diff --git a/.codeclimate.yml b/.codeclimate.yml
new file mode 100644
index 00000000..64ccf7a7
--- /dev/null
+++ b/.codeclimate.yml
@@ -0,0 +1,54 @@
+version: "2"
+
+checks:
+  argument-count:
+    config:
+      threshold: 4
+  complex-logic:
+    config:
+      threshold: 10
+  file-lines:
+    config:
+      threshold: 1000
+  method-complexity:
+    config:
+      threshold: 5
+  method-count:
+    config:
+      threshold: 100
+  method-lines:
+    config:
+      threshold: 30
+  nested-control-flow:
+    config:
+      threshold: 4
+  return-statements:
+    config:
+      threshold: 4
+  # similar-code:
+  #   config:
+  #     threshold: # language-specific defaults. an override will affect all languages.
+  # identical-code:
+  #   config:
+  #     threshold: # language-specific defaults. an override will affect all languages.
+
+plugins:
+  rubocop:
+    enabled: true
+    channel: rubocop-0-53
+
+exclude_patterns:
+  - "benchmark/*"
+  - "benchmark-ips/*"
+  - "build/*"
+  - "coverage/*"
+  - "docs/*"
+  - "examples/*"
+  - "tasks/*"
+  - "spec/*"
+  - "test/*"
+  - "vendored-minitest/*"
+  - "**/node_modules/*"
+  - stdlib/nodejs/js-yaml-3-6-1.js
+  - lib/opal/source_map/vlq.rb
+  - lib/opal/cli_runners/source-map-support*.js
diff --git a/.eslintrc.await.js b/.eslintrc.await.js
new file mode 100644
index 00000000..31192248
--- /dev/null
+++ b/.eslintrc.await.js
@@ -0,0 +1,6 @@
+module.exports = {
+  "extends": "./.eslintrc.js",
+  "parserOptions": {
+    "ecmaVersion": 8
+  },
+};
diff --git a/.eslintrc.js b/.eslintrc.js
new file mode 100644
index 00000000..b8b7dda6
--- /dev/null
+++ b/.eslintrc.js
@@ -0,0 +1,35 @@
+module.exports = {
+  "env": {
+    "browser": true,
+    "node": true
+  },
+  "extends": "eslint:recommended",
+  "parserOptions": {
+    "ecmaVersion": 3
+  },
+  "rules": {
+    "no-unused-vars": ["error", {
+      "varsIgnorePattern": "(\$(\$|\$\$|yield|post_args|[a-z])|self)",
+      "argsIgnorePattern": "(\$(\$|\$\$|yield|post_args|[a-z])|self)",
+    }],
+    "no-extra-semi": "off",
+    "no-empty": "off",
+    "no-unreachable": "off",
+    "no-cond-assign": "off",
+    "no-prototype-builtins": "off",
+    "no-constant-condition": ["error", { "checkLoops": false }],
+    "no-useless-escape": "off",
+    "no-fallthrough": ["error", { "commentPattern": "raise|no-break" }],
+    "no-regex-spaces": "off",
+    "no-control-regex": "off",
+  },
+  "globals": {
+    "Opal": "readonly",
+    "DataView": "readonly",
+    "ArrayBuffer": "readonly",
+    "globalThis": "readonly",
+    "Uint8Array": "readonly",
+    "Promise": "readonly",
+    "WeakRef": "readonly",
+  }
+};
diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 00000000..e69c0d85
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1 @@
+UNRELEASED.md merge=union
diff --git a/.github/FUNDING.yml b/.github/FUNDING.yml
new file mode 100644
index 00000000..c3dba81d
--- /dev/null
+++ b/.github/FUNDING.yml
@@ -0,0 +1 @@
+open_collective: opal
diff --git a/.github/ISSUE_TEMPLATE/bug-report.md b/.github/ISSUE_TEMPLATE/bug-report.md
new file mode 100644
index 00000000..16c08602
--- /dev/null
+++ b/.github/ISSUE_TEMPLATE/bug-report.md
@@ -0,0 +1,47 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: 'Bug: '
+labels: bug
+assignees: ''
+
+---
+
+**Describe the bug**
+<!-- A clear and concise description of what the bug is.
+Please clarify if it's a missing feature. -->
+
+Opal version: …
+
+
+**To Reproduce**
+
+<!--
+Steps to reproduce the behavior. 
+
+You can contrasting it to Ruby's behavior:
+
+```
+$ opal -v -e "puts 123"
+123
+```
+
+```
+$ruby -v -e "puts 123"
+```
+
+or show an error in the compiled code:
+
+```
+$ opal -v -e "puts 123" -cEO
+…
+/* Generated by Opal 1.1.1 */
+(function(Opal) {
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$;
+
+  Opal.add_stubs(['$puts']);
+  return self.$puts(123)
+})(Opal);
+…
+```
+-->
diff --git a/.github/ISSUE_TEMPLATE/feature_request.md b/.github/ISSUE_TEMPLATE/feature_request.md
new file mode 100644
index 00000000..01e9bb27
--- /dev/null
+++ b/.github/ISSUE_TEMPLATE/feature_request.md
@@ -0,0 +1,20 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+title: 'Feature: '
+labels: feature
+assignees: ''
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
new file mode 100644
index 00000000..fb0d317c
--- /dev/null
+++ b/.github/workflows/build.yml
@@ -0,0 +1,105 @@
+name: build
+
+on:
+  push:
+    branches:
+      - master
+      - "*-stable"
+      - "*/ci-check"
+  pull_request: {}
+
+jobs:
+  rake:
+    name: ${{ matrix.combo.name || matrix.combo.ruby }}
+    strategy:
+      fail-fast: false
+      matrix:
+        combo:
+          - name: mspec-nodejs
+            ruby: '3.0'
+            command: bin/rake mspec_nodejs
+          - name: mspec-chrome
+            ruby: '3.0'
+            command: bin/rake mspec_chrome
+          - name: minitest
+            ruby: '3.0'
+            command: bin/rake minitest
+          - name: minitest-strict-mode
+            ruby: '3.0'
+            command: bin/rake minitest
+            strict: 'true'
+          - name: head-ruby
+            ruby: head
+            permissive: true
+          - name: current-ruby
+            ruby: 3.1
+          - name: previous-ruby
+            ruby: '3.0'
+          - name: older-ruby
+            ruby: 2.7
+          - name: near-eol-ruby
+            ruby: 2.6
+          - name: smoke-test
+            ruby: '3.0'
+            command: bin/rake smoke_test
+          - name: windows
+            # These two fail because of broken stacktraces on windows: minitest_node_nodejs mspec_nodejs
+            command: bundle exec rake rspec minitest_nodejs
+            ruby: '3.0'
+            os: windows-latest
+          - name: lint
+            command: bin/rake lint
+            ruby: '3.0'
+          - name: timezone
+            ruby: '3.0'
+          - name: performance
+            ruby: '3.0'
+            permissive: true
+            fetchdepth: '0'
+            command: bin/rake performance:compare
+            os: ryzen
+
+          # Currently failing:
+          # - ruby: truffleruby
+          # - ruby: jruby
+
+    runs-on: ${{ matrix.combo.os || 'ubuntu-latest' }}
+    continue-on-error: ${{ matrix.combo.permissive || false }}
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: ${{ fromJSON(matrix.combo.fetchdepth || '1') }}
+      - if: ${{ matrix.combo.os != 'ryzen' }}
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.combo.ruby }}
+          bundler-cache: false
+      - run: ruby bin/git-submodule-fast-install
+      - run: bundle lock
+      - uses: actions/cache@v2
+        with:
+          path: ./vendor/bundle
+          key: ${{ runner.os }}-${{ matrix.combo.ruby }}-gem-${{ github.ref }}-${{ hashFiles('**/Gemfile.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-${{ matrix.combo.ruby }}-gem-${{ github.ref }}
+            ${{ runner.os }}-${{ matrix.combo.ruby }}-gem-master
+            ${{ runner.os }}-${{ matrix.combo.ruby }}-gem-
+      - uses: actions/cache@v2
+        with:
+          path: ./node_modules
+          key: ${{ runner.os }}-npm-${{ github.ref }}-${{ hashFiles('**/yarn.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-npm-${{ github.ref }}
+            ${{ runner.os }}-npm-master
+            ${{ runner.os }}-npm-
+      - run: yarn install
+      - name: bundle install
+        run: |
+          bundle config path $PWD/vendor/bundle
+          bundle install --jobs 4 --retry 3
+          bundle clean
+      - name: set environment variables
+        if: ${{ matrix.combo.strict == 'true' }}
+        run: |
+          echo "USE_STRICT=true" >> $GITHUB_ENV
+      - run: ${{ matrix.combo.command || 'bin/rake rspec' }}
diff --git a/.gitignore b/.gitignore
index ceeb05b4..a529e264 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,21 @@
+.DS_Store
+*.gem
+.yardoc
+.bundle
+Gemfile.lock
+Gemfile.local
+build/
+/.github_access_token
+/cdn
+/node_modules
+/gh-pages
 /tmp
+.ruby-gemset
+.ruby-version
+.rvmrc
+.rspec-local
+/coverage
+
+# Ignore old submodules, useful when switching branches
+spec/corelib
+spec/rubyspec
diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 00000000..19a41785
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,10 @@
+[submodule "spec/ruby"]
+	path = spec/ruby
+	url = https://github.com/ruby/spec.git
+[submodule "test/cruby"]
+	path = test/cruby
+	url = https://github.com/ruby/ruby.git
+	branch = ruby_2_2
+[submodule "spec/mspec"]
+	path = spec/mspec
+	url = https://github.com/ruby/mspec.git
diff --git a/.inch.yml b/.inch.yml
new file mode 100644
index 00000000..46d9d703
--- /dev/null
+++ b/.inch.yml
@@ -0,0 +1,19 @@
+# files:
+#   # define files included in the analysis (defaults to ["{app,lib}/**/*.rb"])
+#   included:
+#     - plugins/**/*.rb
+#   # define files excluded from the analysis (defaults to [])
+#   excluded:
+#     # you can use file paths
+#     - plugins/vendor/sparkr/sparkr.rb
+#     # or globs
+#     - plugins/vendor/**/*.rb
+#     # or regular expressions
+#     - !ruby/regexp /vendor/
+
+
+files:
+  included:
+    - lib/**/*.rb
+  excluded:
+    - lib/opal/parser/grammar.rb
diff --git a/.overcommit.yml b/.overcommit.yml
new file mode 100644
index 00000000..5910361a
--- /dev/null
+++ b/.overcommit.yml
@@ -0,0 +1,35 @@
+# Use this file to configure the Overcommit hooks you wish to use. This will
+# extend the default configuration defined in:
+# https://github.com/sds/overcommit/blob/master/config/default.yml
+#
+# At the topmost level of this YAML file is a key representing type of hook
+# being run (e.g. pre-commit, commit-msg, etc.). Within each type you can
+# customize each hook, such as whether to only run it on certain files (via
+# `include`), whether to only display output if it fails (via `quiet`), etc.
+#
+# For a complete list of hooks, see:
+# https://github.com/sds/overcommit/tree/master/lib/overcommit/hook
+#
+# For a complete list of options that you can use to customize hooks, see:
+# https://github.com/sds/overcommit#configuration
+#
+# Uncomment the following lines to make the configuration take effect.
+
+gemfile: Gemfile
+
+PreCommit:
+ RuboCop:
+   enabled: true
+   on_warn: fail # Treat all warnings as failures
+
+ TrailingWhitespace:
+   enabled: true
+   # exclude:
+   #   - '**/db/structure.sql' # Ignore trailing whitespace in generated files
+
+#PostCheckout:
+#  ALL: # Special hook name that customizes all hooks of this type
+#    quiet: true # Change all post-checkout hooks to only display output on failure
+#
+#  IndexTags:
+#    enabled: true # Generate a tags file with `ctags` each time HEAD changes
diff --git a/.rspec b/.rspec
new file mode 100644
index 00000000..ba601fd1
--- /dev/null
+++ b/.rspec
@@ -0,0 +1,2 @@
+--color
+--require lib/spec_helper
diff --git a/.rubocop.yml b/.rubocop.yml
new file mode 100644
index 00000000..f4c06922
--- /dev/null
+++ b/.rubocop.yml
@@ -0,0 +1,450 @@
+require: rubocop-performance
+inherit_from: .rubocop/todo.yml
+
+AllCops:
+  TargetRubyVersion: 2.6
+  Exclude:
+    - CHANGELOG.md
+    - CONDUCT.md
+    - CONTRIBUTING.md
+    - Gemfile/**/*
+    - Gemfile.lock
+    - Guardfile/**/*
+    - HACKING.md
+    - LICENSE/**/*
+    - README.md
+    - Rakefile/**/*
+    - '*'
+    - __*
+    - __*/**/*
+    - appveyor.yml
+    - benchmark/**/*
+    - benchmark-ips/**/*
+    - bin/**/*
+    - build/**/*
+    - config.ru
+    - coverage/**/*
+    - docs/**/*
+    - examples/**/*
+    - exe/**/*
+    # - lib/**/*
+    - lib/opal/source_map/vlq.rb
+    - node_modules/**/*
+    # - opal/**/*
+    - opal.gemspec
+    - pkg/**/*
+    - spec/**/*
+    # - stdlib/**/*
+    - tasks/**/*
+    - test/**/*
+    - tmp/**/*
+    - vendored-minitest/**/*
+    - vendor/**/* # present in travis
+    # Files thate were copied from MRI as is
+    - 'stdlib/benchmark.rb'
+    - 'stdlib/observer.rb'
+    - 'stdlib/open-uri.rb'
+    - 'stdlib/stringio.rb'
+    - 'stdlib/source_map/*.rb'
+    - 'stdlib/racc/parser.rb'
+    - 'stdlib/e2mmap.rb'
+    - 'stdlib/matrix.rb'
+    - 'stdlib/matrix/*.rb'
+    - 'stdlib/pp.rb'
+    - 'stdlib/prettyprint.rb'
+    - 'stdlib/optparse.rb'
+    - 'stdlib/optparse/*.rb'
+    - 'stdlib/tmpdir.rb'
+    - 'stdlib/tempfile.rb'
+
+inherit_mode:
+  merge:
+    - Exclude
+
+Naming/MethodName:
+  Exclude:
+    # Ruby has methods like Integer/Float/Array
+    - 'opal/**/*.rb'
+    - 'stdlib/**/*.rb'
+
+Layout/ClosingParenthesisIndentation:
+  Enabled: false
+
+Layout/CommentIndentation:
+  # The following files use comments to show generated ruby code
+  Exclude:
+    - 'lib/opal/rewriters/binary_operator_assignment.rb'
+    - 'lib/opal/rewriters/logical_operator_assignment.rb'
+    - 'lib/opal/source_map/file.rb'
+
+# We need to support older rubies
+Layout/IndentHeredoc:
+  Enabled: false
+
+Style/FrozenStringLiteralComment:
+  Exclude:
+    - 'opal/**/*.rb'
+    - 'stdlib/**/*.rb'
+
+Layout/EmptyLineAfterMagicComment:
+  Exclude:
+    - 'opal/**/*.rb'
+    - 'stdlib/**/*.rb'
+
+Style/GlobalVars:
+  Exclude:
+    - 'opal/corelib/kernel.rb'
+    - 'stdlib/nodejs/irb.rb'
+    - 'stdlib/console.rb'
+    - 'stdlib/native.rb'
+    - 'stdlib/await.rb'
+
+Layout/ExtraSpacing:
+  Exclude:
+    # This files uses extra spaces to show an inheritance tree of error classes
+    - 'opal/corelib/error.rb'
+
+Layout/IndentArray:
+  EnforcedStyle: consistent
+
+Layout/SpaceAroundOperators:
+  Exclude:
+    - 'opal/corelib/error.rb'
+
+Lint/BooleanSymbol:
+  Exclude:
+    # There are AST nodes and rewriters with types :true and :false
+    - 'lib/opal/nodes/**/*.rb'
+    - 'lib/opal/rewriters/**/*.rb'
+
+Lint/InheritException:
+  Exclude:
+    - 'lib/opal/builder.rb'
+    - 'lib/opal/errors.rb'
+    - 'opal/**/*.rb'
+    - 'stdlib/**/*.rb'
+
+Lint/LiteralAsCondition:
+  Exclude:
+    # Opal supports if `...js...`
+    - 'opal/**/*.rb'
+    - 'stdlib/**/*.rb'
+
+Lint/Loop:
+  Exclude:
+    # This is for optimization purposes mostly
+    - 'opal/corelib/io.rb'
+
+# Allow the use of if/unless inside blocks
+Style/Next:
+  Enabled: false
+
+Lint/RescueException:
+  Exclude:
+    # That's what MRI does
+    - 'opal/corelib/enumerator.rb'
+    # Promises must care about all exceptions
+    - 'stdlib/promise.rb'
+    - 'opal/corelib/binding.rb'
+
+Lint/StringConversionInInterpolation:
+  Exclude:
+    # That's what MRI does
+    - 'opal/corelib/error.rb'
+
+Lint/UnusedBlockArgument:
+  Exclude:
+    # Variable from Ruby can be accessed in JS, rubocop can't catch it (but JSHint can)
+    - 'opal/**/*.rb'
+    - 'stdlib/**/*.rb'
+
+Lint/UnusedMethodArgument:
+  Exclude:
+    # Variable from Ruby can be accessed in JS, rubocop can't catch it (but JSHint can)
+    - 'opal/**/*.rb'
+    - 'stdlib/**/*.rb'
+
+Lint/UselessAssignment:
+  Exclude:
+    # Variable from Ruby can be accessed in JS, rubocop can't catch it (but JSHint can)
+    - 'opal/**/*.rb'
+    - 'stdlib/**/*.rb'
+
+Metrics/AbcSize:
+  Enabled: false
+
+Metrics/BlockLength:
+  Enabled: false
+
+Metrics/BlockNesting:
+  Enabled: false
+
+Metrics/ClassLength:
+  Enabled: false
+
+Metrics/CyclomaticComplexity:
+  Enabled: false
+
+Metrics/MethodLength:
+  Enabled: false
+
+Metrics/ModuleLength:
+  Enabled: false
+
+Metrics/PerceivedComplexity:
+  Enabled: false
+
+Metrics/ParameterLists:
+  Exclude:
+    # Some Ruby methods take 10 arguments
+    - 'opal/**/*.rb'
+    - 'stdlib/**/*.rb'
+
+Naming/BinaryOperatorParameterName:
+  Exclude:
+    # Opal follows MRI argument namings
+    - 'opal/**/*.rb'
+    - 'stdlib/**/*.rb'
+
+Naming/PredicateName:
+  # Ruby has "has_key?" method
+  NamePrefixBlacklist: is_, have_
+
+Performance/FlatMap:
+  Exclude:
+    # That's actually a definition of Enumerable#flat_map
+    - 'opal/corelib/enumerable.rb'
+
+Performance/RegexpMatch:
+  # This cop converts =~ to match?
+  # But this method was introduced only in 2.4
+  Enabled: false
+
+Performance/UnfreezeString:
+  Enabled: false
+
+Style/AsciiComments:
+  Enabled: false
+
+Style/CaseEquality:
+  Exclude:
+    - 'opal/**/*.rb'
+    - 'stdlib/**/*.rb'
+    - 'lib/opal/config.rb'
+
+Style/ClassAndModuleChildren:
+  Enabled: false
+
+Style/ClassVars:
+  Exclude:
+    # These classes use class variables on purpose
+    - 'lib/opal/rewriters/binary_operator_assignment.rb'
+    - 'lib/opal/rewriters/logical_operator_assignment.rb'
+
+Style/CommandLiteral:
+  # This cop converts `` to %x{}
+  Enabled: false
+
+Style/Documentation:
+  Enabled: false
+
+Style/EmptyMethod:
+  # There are a lot of empty methods that are required to make MSpec working
+  Exclude:
+    - 'opal/**/*.rb'
+    - 'stdlib/**/*.rb'
+
+Style/IfUnlessModifier:
+  Enabled: false
+
+Style/InfiniteLoop:
+  # while true is faster than loop
+  Enabled: false
+
+Style/InverseMethods:
+  # That's what MRI does
+  Exclude:
+    - 'opal/corelib/basic_object.rb'
+    - 'opal/corelib/kernel.rb'
+
+Style/MethodMissingSuper:
+  # Base Opal classes simply can't or shouldn't call super for #method_missing
+  Exclude:
+    - 'opal/corelib/basic_object.rb'
+    - 'opal/corelib/kernel.rb'
+    - 'opal/corelib/string/inheritance.rb'
+    - 'stdlib/native.rb'
+    - 'stdlib/delegate.rb'
+    - 'stdlib/ostruct.rb'
+
+Style/MissingRespondToMissing:
+  Enabled: true
+
+Style/NumericPredicate:
+  Enabled: false
+
+Style/ParallelAssignment:
+  Enabled: false
+
+Style/PercentLiteralDelimiters:
+  PreferredDelimiters:
+    default: '{}'
+  Exclude:
+    # Opal has a convention of %x{}
+    - 'opal/**/*.rb'
+    - 'stdlib/**/*.rb'
+
+Style/SafeNavigation:
+  # Opal supports old versions of Ruby that don't have safe navigator
+  Enabled: false
+
+Style/SpecialGlobalVars:
+  Enabled: false
+
+Style/StderrPuts:
+  Enabled: false
+
+Style/YodaCondition:
+  Exclude:
+    # In Opal there are lot of cases like
+    # if `..js..` == object
+    - 'opal/**/*.rb'
+    - 'stdlib/**/*.rb'
+
+Layout/MultilineAssignmentLayout:
+  EnforcedStyle: same_line
+
+Style/TrailingCommaInArguments:
+  # Any style is allowed
+  Enabled: false
+
+Layout/AlignParameters:
+  EnforcedStyle: with_fixed_indentation
+
+Layout/MultilineMethodCallBraceLayout:
+  EnforcedStyle: new_line
+
+Style/Lambda:
+  EnforcedStyle: literal
+
+Layout/EmptyLines:
+  # Empty lines can be used to separate interface and implementation
+  Enabled: false
+
+Style/EmptyElse:
+  # Empty 'else' can be used to indicate a potential empty branch condition
+  EnforcedStyle: nil
+
+Lint/EmptyWhen:
+  # Empty 'when' can be used to indicate a potential empty branch condition
+  Enabled: false
+
+Style/StringLiterals:
+  Exclude:
+    # Nodes are more like DSL, so they are allowed to have any internal rules
+    # that make the code more readable
+    - 'lib/opal/nodes/**/*.rb'
+
+Style/TrailingUnderscoreVariable:
+  # We treat a, = *b construction as a potential source of bugs
+  Enabled: false
+
+Style/WhileUntilModifier:
+  Enabled: false
+
+Style/RegexpLiteral:
+  # Use the style that you like more, but if there are slashes or backslashe
+  # prefer %r{} syntax.
+  # Rubocop doesn't check for backslashes, so this rule is disabled.
+  Enabled: false
+
+Naming/FileName:
+  Exclude:
+    - 'stdlib/opal-builder.rb'
+    - 'stdlib/nodejs/open-uri.rb'
+    - 'stdlib/opal-parser.rb'
+    - 'stdlib/opal-platform.rb'
+    - 'stdlib/opal-source-maps.rb'
+    - 'stdlib/opal-replutils.rb'
+
+Naming/ConstantName:
+  Exclude:
+    # MRI has a constant BigDecimal::SIGN_NaN
+    - 'stdlib/bigdecimal.rb'
+
+Security/Eval:
+  Exclude:
+    # That's what parser does
+    - 'stdlib/opal-parser.rb'
+
+Naming/AccessorMethodName:
+  Exclude:
+    # StringScanner has method 'get_byte'
+    - 'stdlib/strscan.rb'
+    # Exception has method 'set_backtrace'
+    - 'opal/corelib/error.rb'
+
+Style/RescueStandardError:
+  Enabled: false
+
+Style/TrailingCommaInArrayLiteral:
+  # Any style is allowed
+  Enabled: false
+
+Style/TrailingCommaInHashLiteral:
+  # Any style is allowed
+  Enabled: false
+
+Naming/UncommunicativeMethodParamName:
+  Exclude:
+    # This file uses parser's code that doesn't match our styling requirements
+    - 'lib/opal/parser/patch.rb'
+    - 'opal/**/*.rb'
+    - 'stdlib/**/*.rb'
+
+Lint/BigDecimalNew:
+  Exclude:
+    # That's the implementation of the Kernel#BigDecimal
+    - 'stdlib/bigdecimal/kernel.rb'
+
+Style/MutableConstant:
+  Exclude:
+    - 'opal/**/*.rb'
+    - 'stdlib/**/*.rb'
+
+Style/EmptyCaseCondition:
+  Enabled: false
+
+
+# Use whatever suites the situation, sometimes assign_inside_condition is
+# more readable over assign_to_condition despite the risk of repeating the
+# variable name.
+Style/ConditionalAssignment:
+  Enabled: false
+
+Naming/MemoizedInstanceVariableName:
+  Exclude:
+    - lib/opal/parser/patch.rb # it's a monkey-patch on the parser gem
+    - lib/opal/nodes/rescue.rb # we know what we are doing here and no, it's not memoization
+
+Style/AccessModifierDeclarations:
+  Enabled: false
+
+Style/MultipleComparison:
+  Enabled: false
+
+Layout/EmptyLineAfterGuardClause:
+  Enabled: false
+
+Layout/AlignHash:
+  Enabled: false
+
+# No way to set multiple preferred names
+Naming/RescuedExceptionsVariableName:
+  Enabled: false
+
+Style/Semicolon:
+  AllowAsExpressionSeparator: true
+
+Layout/EmptyLinesAroundExceptionHandlingKeywords:
+  Enabled: false
diff --git a/.rubocop/todo.yml b/.rubocop/todo.yml
new file mode 100644
index 00000000..c81988a9
--- /dev/null
+++ b/.rubocop/todo.yml
@@ -0,0 +1,43 @@
+# All items in this file require fixing
+
+Metrics/LineLength:
+  Enabled: false
+
+Lint/AssignmentInCondition:
+  Exclude:
+    - 'lib/opal/ast/node.rb'
+    - 'lib/opal/compiler.rb'
+    - 'lib/opal/nodes/helpers.rb'
+    - 'lib/opal/nodes/logic.rb'
+    - 'lib/opal/nodes/masgn.rb'
+    - 'lib/opal/nodes/runtime_helpers.rb'
+    - 'lib/opal/nodes/scope.rb'
+    - 'lib/opal/nodes/top.rb'
+    - 'lib/tilt/opal.rb'
+    - 'opal/corelib/comparable.rb'
+    - 'opal/corelib/complex.rb'
+    - 'opal/corelib/marshal/write_buffer.rb'
+
+Style/GuardClause:
+  Enabled: false
+
+Style/ModuleFunction:
+  Exclude:
+    - 'lib/opal/config.rb'
+    - 'lib/opal/util.rb'
+    - 'stdlib/nodejs/fileutils.rb'
+    - 'stdlib/js.rb'
+
+Style/MutableConstant:
+  Exclude:
+    - 'lib/opal/nodes/call.rb'
+    - 'lib/opal/util.rb'
+
+Lint/HandleExceptions:
+  Exclude:
+    - 'stdlib/ostruct.rb'
+
+Lint/ToJSON:
+  Exclude:
+    - 'lib/opal/source_map/map.rb'
+    - 'stdlib/json.rb'
diff --git a/.yardopts b/.yardopts
new file mode 100644
index 00000000..b08a2da4
--- /dev/null
+++ b/.yardopts
@@ -0,0 +1,8 @@
+lib/opal.rb
+lib/opal/**/*.rb
+--markup=markdown
+--markup-provider=redcarpet
+--hide-void-return
+-
+CHANGELOG.md
+docs/compiler_directives.md
diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 00000000..1937d5f9
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,1817 @@
+# Change Log
+
+All notable changes to this project will be documented in this file.
+This project *tries* to adhere to [Semantic Versioning](http://semver.org/), even before v1.0.
+
+Changes are grouped as follows:
+- **Added** for new features.
+- **Changed** for changes in existing functionality.
+- **Deprecated** for once-stable features removed in upcoming releases.
+- **Removed** for deprecated features removed in this release.
+- **Fixed** for any bug fixes.
+- **Security** to invite users to upgrade in case of vulnerabilities.
+
+
+
+
+
+## [1.4.1](https://github.com/opal/opal/compare/v1.4.0...v1.4.1) - 2022-01-12
+
+
+### Changed
+
+- PromiseV2 is now declared a stable interface!
+
+### Fixed
+
+- Args named with JS reserved words weren't always renamed when _zsuper_ was involved ([#2385](https://github.com/opal/opal/pull/2385))
+
+<!--
+### Added
+### Removed
+### Deprecated
+### Internal
+-->
+
+
+
+
+## [1.4.0](https://github.com/opal/opal/compare/v1.3.2...v1.4.0) - 2021-12-24
+
+
+### Added
+
+- Implement `chomp:` option for `String#each_line` and `#lines` ([#2355](https://github.com/opal/opal/pull/2355))
+- Ruby 3.1 support and some older Ruby features we missed ([#2347](https://github.com/opal/opal/pull/2347))
+  - Use parser in 3.1 mode to support new language-level features like hashes/kwargs value omission, the pin operator for pattern matching
+  - `Array#intersect?`
+  - `String#strip` and `String#lstrip` to also remove NUL bytes
+  - `Integer.try_convert`
+  - `public`, `private`, `protected`, `module_function` now return their arguments
+  - `Class#descendants`, `Class#subclasses`
+  - (<=1.8) `Kernel#local_variables`
+  - (<=2.3) Set local variables for regexp named captures (`/(?<b>a)/ =~ 'a'` => `b = 'a'`)
+  - Remove deprecated `NIL`, `TRUE`, `FALSE` constants
+  - `String#unpack` and `String#unpack1` to support an `offset:` kwarg
+  - `MatchData#match`, `MatchData#match_length`
+  - Enumerable modernization
+    - `Enumerable#tally` to support an optional hash accumulator
+    - `Enumerable#each_{cons,slice}` to return self
+    - `Enumerable#compact`
+  - `Refinement` becomes its own class now
+  - `Struct#keyword_init?`
+  - (pre-3.1) Large Enumerator rework
+    - Introduce `Enumerator::ArithmeticSequence`
+    - Introduce `Enumerator::Chain`
+    - Introduce `Enumerator#+` to create `Enumerator::Chain`s
+    - `Enumerator#{rewind,peek,peek_values,next,next_values}`
+    - Improve corelib support for beginless/endless ranges and `ArithmeticSequences`
+      - `String#[]`, `Array#[]`, `Array#[]=`, `Array#fill`, `Array#values_at`
+    - `Range#step` and `Numeric#step` return an `ArithmeticSequence` when `Numeric` values are in play
+    - Introduce `Range#%`
+    - `Enumerator::Yielder#to_proc`
+    - Fix #2367
+  - (2.7) `UnboundMethod#bind_call`
+  - (Opal) `{Kernel,BasicObject}#{inspect,p,pp,method_missing}` may work with JS native values now, also they now correctly report cycles
+  - `Enumerable#sum` uses Kahan's summation algorithm to reduce error with floating point values
+  - `File.dirname` supports a new `level` argument
+- Vendor in `optparse` and `shellwords` ([#2326](https://github.com/opal/opal/pull/2326))
+- Preliminary support for compiling the whole `bin/opal` with Opal ([#2326](https://github.com/opal/opal/pull/2326))
+
+### Fixed
+
+- Fix coertion for `Array#drop` ([#2371](https://github.com/opal/opal/pull/2371))
+- Fix coertion for `File.absolute_path` ([#2372](https://github.com/opal/opal/pull/2372))
+- Fix some `IO#puts` edge cases (no args, empty array, nested array, …) ([#2372](https://github.com/opal/opal/pull/2372))
+- Preserve UNC path prefix on File.join ([#2366](https://github.com/opal/opal/pull/2366))
+- Methods on `Kernel`, `BasicObject`, `Boolean` will never return boxed values anymore ([#2293](https://github.com/opal/opal/pull/2293))
+  - `false.tap{}` will now correctly return a JS value of `false`, not `Object(false)`
+- opal-parser doesn't break on `<<~END` strings anymore ([#2364](https://github.com/opal/opal/pull/2364))
+- Fix error reporting at the early stage of loading ([#2326](https://github.com/opal/opal/pull/2326))
+
+### Changed
+
+- Various outputted code size optimizations - 19% improvement for minified unmangled AsciiDoctor bundle - see: https://opalrb.com/blog/2021/11/24/optimizing-opal-output-for-size/ ([#2356](https://github.com/opal/opal/pull/2356))
+- Second round of code size optimizations - 3% improvement for AsciiDoctor bundle on top of the first round - 23% total - see: https://github.com/opal/opal/pull/2365/commits ([#2365](https://github.com/opal/opal/pull/2365))
+  - The calls to `==`, `!=` and `===` changed their semantics slightly: it's impossible to monkey patch those calls for `String` and `Number`, but on other classes they can now return `nil` and it will be handled correctly
+  - The calls to `!` changed their semantics slightly: it's impossible to monkey patch this call for `Boolean` or `NilClass`.
+- Refactored the structure of the internal `stdlib/nodejs` folder ([#2374](https://github.com/opal/opal/pull/2374))
+  - Added `nodejs/base` with just I/O, exit, and ARGV management
+  - Moved `Process::Status` to corelib
+  - Fixed requires to be more robust
+
+### Removed
+
+- Removed `nodejs/irb` from stdlib as it's been broken for some time ([#2374](https://github.com/opal/opal/pull/2374))
+- Removed `Kernel#node_require` from `nodejs/kernel` as it's been deprecated for a long time ([#2374](https://github.com/opal/opal/pull/2374))
+
+<!--
+### Deprecated
+### Internal
+-->
+
+
+
+
+## [1.3.2](https://github.com/opal/opal/compare/v1.3.1...v1.3.2) - 2021-11-10
+
+
+### Fixed
+
+- Update documentation ([#2350](https://github.com/opal/opal/pull/2350))
+- Fix `IO#gets` getting an extra char under some circumstances ([#2349](https://github.com/opal/opal/pull/2349))
+- Raise a `TypeError` instead of `UndefinedMethod` if not a string is passed to `__send__` ([#2346](https://github.com/opal/opal/pull/2346))
+- Do not modify `$~` when calling `String#scan` from internal methods ([#2353](https://github.com/opal/opal/pull/2353))
+- Stop interpreting falsey values as a missing constant in `Module#const_get` ([#2354](https://github.com/opal/opal/pull/2354))
+
+
+
+
+## [1.3.1](https://github.com/opal/opal/compare/v1.3.0...v1.3.1) - 2021-11-03
+
+
+### Fixed
+
+- Fix REPL if bundler environment isn't set ([#2338](https://github.com/opal/opal/pull/2338))
+- Fix Chrome runner if bundler environment isn't set and make it work on other Unixes ([#2339](https://github.com/opal/opal/pull/2339))
+- `Proc#binding` to return a binding if `Binding` is defined (#2341, #2340)
+- `Array#zip` to correctly `yield` (#2342, #1611)
+- `String#scan` to correctly `yield` (#2342, #1660)
+
+
+
+
+## [1.3.0](https://github.com/opal/opal/compare/v1.2.0...v1.3.0) - 2021-10-27
+
+
+### Added
+
+- Add support for `retry` ([#2264](https://github.com/opal/opal/pull/2264))
+- Modernize Exceptions ([#2264](https://github.com/opal/opal/pull/2264))
+  - Add `#cause`, `#backtrace_locations`, `#full_message` to `Exception`
+  - Normalize backtraces across platforms
+  - Add `Thread::Backtrace::Location`
+  - Output Exception#full_message on uncaught exceptions ([#2269](https://github.com/opal/opal/pull/2269))
+- TracePoint `:class` support ([#2049](https://github.com/opal/opal/pull/2049))
+- Implement the Flip-Flop operators ([#2261](https://github.com/opal/opal/pull/2261))
+- Add `JS[]` to access properties on the global object ([#2259](https://github.com/opal/opal/pull/2259))
+- Add `ENV.fetch` to the Nodejs implementation of `ENV` ([#2259](https://github.com/opal/opal/pull/2259))
+- Opal::Cache, an optional compiler cache (enabled by default) (#2242, #2278, #2329)
+- Alias for gvars, alias on main ([#2270](https://github.com/opal/opal/pull/2270))
+- Support for GJS (GNOME's JavaScript runtime) runner ([#2280](https://github.com/opal/opal/pull/2280))
+- Scope variables support for `eval()` ([#2256](https://github.com/opal/opal/pull/2256))
+- Add support for `Kernel#binding` ([#2256](https://github.com/opal/opal/pull/2256))
+- A (mostly) correct support for refinements ([#2256](https://github.com/opal/opal/pull/2256))
+- Add support for ECMAScript modules with an `--esm` CLI option ([#2286](https://github.com/opal/opal/pull/2286))
+- Implement `Regexp#names` and add named captures support ([#2272](https://github.com/opal/opal/pull/2272))
+- REPL improvements: ([#2285](https://github.com/opal/opal/pull/2285))
+  - Colored output & history support
+  - `ls` to show available constants and variable
+- Add `Method#===` as an alias to `Method#call`, works the same as `Proc#===` ([#2305](https://github.com/opal/opal/pull/2305))
+- Add `IO#gets` and `IO#read_proc` along with other supporting methods ([#2309](https://github.com/opal/opal/pull/2309))
+  - Support `#gets` on most platforms, including browsers (via `prompt`)
+  - Move the REPL to a `--repl` CLI option of the main executable
+  - Completely refactor IO, now supporting methods like `#each_line` throughout the entire IO chain
+  - Add a runner for MiniRacer (as `miniracer`)
+  - Support Windows on the Chrome runner
+  - Support Windows on the REPL
+  - Platforms an IO implementations should either set `IO#read_proc` or overwrite `IO#sysread`
+- [experimental] Add support for JavaScript async/await ([#2221](https://github.com/opal/opal/pull/2221))
+  - Enable the feature by adding a magic comment: `# await: true`
+  - The magic comment can be also used to mark specific method patterns to be awaited
+    (e.g. `# await: *_await, sleep` will make any method ending in `_await` or named `sleep` to be awaited)
+  - Add `Kernel#__await__` as a bridge to the `await` keyword (inspired by CoffeeScript await support)
+  - Require `opal/await` to get additional support
+  - Read more on the newly added documentation page
+- Better interoperability between legacy Promise (v1) and native Promise (v2) ([#2221](https://github.com/opal/opal/pull/2221))
+  - Add `PromiseV1` as an alias to the original (legacy) Promise class
+  - Add `#to_v1` and `#to_v2` to both classes
+  - `Promise#to_n` will convert it to a native Promise (v2)
+- Add `Opal::Config.esm` to enable/disable ES modules ([#2316](https://github.com/opal/opal/pull/2316))
+  - If Config.esm is enabled, SimpleServer does type="module"
+  - Add new rack-esm example
+- Add a QuickJS (https://bellard.org/quickjs/) runner ([#2331](https://github.com/opal/opal/pull/2331))
+- Add `IO#fileno`, `Method#curry`, `Buffer#to_s`, `Pathname.pwd` ([#2332](https://github.com/opal/opal/pull/2332))
+- Add NodeJS support for `ARGF`, `ENV.{inspect,to_h,to_hash,merge}`, `File.{delete,unlink}`, `Kernel#system`, <code>Kernel#\`</code>, `Process::Status` ([#2332](https://github.com/opal/opal/pull/2332))
+- Introduce `__dir__` support ([#2323](https://github.com/opal/opal/pull/2323))
+- Full autoload support ([#2323](https://github.com/opal/opal/pull/2323))
+  - Now compatible with `opal-zeitwerk` and `isomorfeus`
+  - Allow toplevel autoloads
+  - Allow dynamic autoloads (e.g. can be hooked to fetch a URL upon autoload with a custom loader)
+  - Allow overwriting `require` (e.g. like rubygems does)
+  - Allow autoloading trees with `require_tree "./foo", autoload: true`
+  - Add Module#autoload?
+- Autoload parts of the corelib ([#2323](https://github.com/opal/opal/pull/2323))
+
+### Fixed
+
+- Fixed multiple line `Regexp` literal to not generate invalid syntax as JavaScript ([#1616](https://github.com/opal/opal/pull/1616))
+- Fix `Kernel#{throw,catch}` along with `UncaughtThrowError` ([#2264](https://github.com/opal/opal/pull/2264))
+- Update source-map-support to fix an off-by-one error ([#2264](https://github.com/opal/opal/pull/2264))
+- Source map: lines should start from 1, not 0 ([#2273](https://github.com/opal/opal/pull/2273))
+- Allow for multiple underscored args with the same name in strict mode ([#2292](https://github.com/opal/opal/pull/2292))
+- Show instance variables in `Kernel#inspect` ([#2285](https://github.com/opal/opal/pull/2285))
+- `0.digits` was returning an empty array in strict mode ([#2301](https://github.com/opal/opal/pull/2301))
+- Non Integer numbers were responding to `#digits` ([#2301](https://github.com/opal/opal/pull/2301))
+- Correctly delete hash members when dealing with boxed strings ([#2306](https://github.com/opal/opal/pull/2306))
+- Escape string components in interpolated strings (`dstrs`) correctly ([#2308](https://github.com/opal/opal/pull/2308))
+- Don't try to return the JS `debugger` statement, just return `nil` ([#2307](https://github.com/opal/opal/pull/2307))
+- Retain the `-` while stringifying `-0.0` ([#2304](https://github.com/opal/opal/pull/2304))
+- Fix super support for rest args and re-assignments with implicit arguments ([#2315](https://github.com/opal/opal/pull/2315))
+- Fix calling `Regexp#last_match` when `$~` is nil ([#2328](https://github.com/opal/opal/pull/2328))
+- Windows support for chrome runner ([#2324](https://github.com/opal/opal/pull/2324))
+  - Use correct node separator for NODE_PATH on Windows
+  - Pass dir and emulate exec a bit on Windows
+  - Use Gem.win_platform?, match supported platform to ruby, simplify run
+- NodeJS: Drop the first `--` argument in `ARGV` ([#2332](https://github.com/opal/opal/pull/2332))
+- Fix `Object#require` not pointing to `Kernel#require` ([#2323](https://github.com/opal/opal/pull/2323))
+
+### Changed
+
+- Fast-track bad constant names passed to `Struct.new` ([#2259](https://github.com/opal/opal/pull/2259))
+- Renamed internal `super` related helpers,
+  `find_super_dispatcher` is now `find_super`, `find_iter_super_dispatcher` is now `find_block_super` ([#2090](https://github.com/opal/opal/pull/2090))
+- The `opal-repl` CLI now requires files to be passed with `--require` (or `-r`) instead of the bare filename ([#2309](https://github.com/opal/opal/pull/2309))
+- `Process` is now a Module, not a Class - just like in MRI ([#2332](https://github.com/opal/opal/pull/2332))
+- `s = StringIO.new("a"); s << "b"; s.string` now returns "b", like MRI, but Opal used to return "ab" ([#2309](https://github.com/opal/opal/pull/2309))
+
+### Internal
+
+- Switch from jshint to ESLint ([#2289](https://github.com/opal/opal/pull/2289))
+- Switch from UglifyJS to Terser ([#2318](https://github.com/opal/opal/pull/2318))
+- [CI] Performance regression check (#2276, #2282)
+
+
+
+
+## [1.2.0](https://github.com/opal/opal/compare/v1.1.1...v1.2.0) - 2021-07-28
+
+
+### Added
+
+- Support for multiple arguments in Hash#{merge, merge!, update} ([#2187](https://github.com/opal/opal/pull/2187))
+- Support for Ruby 3.0 forward arguments: `def a(...) puts(...) end` ([#2153](https://github.com/opal/opal/pull/2153))
+- Support for beginless and endless ranges: `(1..)`, `(..1)` ([#2150](https://github.com/opal/opal/pull/2150))
+- Preliminary support for `**nil` argument - see #2240 to note limitations ([#2152](https://github.com/opal/opal/pull/2152))
+- Support for `Random::Formatters` which add methods `#{hex,base64,urlsafe_base64,uuid,random_float,random_number,alphanumeric}` to `Random` and `SecureRandom` ([#2218](https://github.com/opal/opal/pull/2218))
+- Basic support for ObjectSpace finalizers and ObjectSpace::WeakMap ([#2247](https://github.com/opal/opal/pull/2247))
+- A more robust support for encodings (especially binary strings) ([#2235](https://github.com/opal/opal/pull/2235))
+- Support for `"\x80"` syntax in String literals ([#2235](https://github.com/opal/opal/pull/2235))
+- Added `String#+@`, `String#-@` ([#2235](https://github.com/opal/opal/pull/2235))
+- Support for `begin <CODE> end while <CONDITION>` ([#2255](https://github.com/opal/opal/pull/2255))
+- Added Hash#except and `Hash#except!` ([#2243](https://github.com/opal/opal/pull/2243))
+- Parser 3.0: Implement pattern matching (as part of this `{Array,Hash,Struct}#{deconstruct,deconstruct_keys} methods were added)` ([#2243](https://github.com/opal/opal/pull/2243))
+- [experimental] Reimplement Promise to make it bridged with JS native Promise, this new implementation can be used by requiring `promise/v2` ([#2220](https://github.com/opal/opal/pull/2220))
+
+### Fixed
+
+- Encoding lookup was working only with uppercase names, not giving any errors for wrong ones (#2181, #2183, #2190)
+- Fix `Number#to_i` with huge number ([#2191](https://github.com/opal/opal/pull/2191))
+- Add regexp support to `String#start_with` ([#2198](https://github.com/opal/opal/pull/2198))
+- `String#bytes` now works in strict mode ([#2194](https://github.com/opal/opal/pull/2194))
+- Fix nested module inclusion ([#2053](https://github.com/opal/opal/pull/2053))
+- SecureRandom is now cryptographically secure on most platforms (#2218, #2170)
+- Fix performance regression for `Array#unshift` on v8 > 7.1 ([#2116](https://github.com/opal/opal/pull/2116))
+- String subclasses now call `#initialize` with multiple arguments correctly (with a limitation caused by the String immutability issue, that a source string must be the first argument and `#initialize` can't change its value) (#2238, #2185)
+- Number#step is moved to Numeric ([#2100](https://github.com/opal/opal/pull/2100))
+- Fix class Class < superclass for invalid superclasses ([#2123](https://github.com/opal/opal/pull/2123))
+- Fix `String#unpack("U*")` on binary strings with latin1 high characters, fix performance regression on that call (#2235, #2189, #2129, #2099, #2094, #2000, #2128)
+- Fix `String#to_json` output on some edge cases ([#2235](https://github.com/opal/opal/pull/2235))
+- Rework class variables to support inheritance correctly ([#2251](https://github.com/opal/opal/pull/2251))
+- ISO-8859-1 and US-ASCII encodings are now separated as in MRI ([#2235](https://github.com/opal/opal/pull/2235))
+- `String#b` no longer modifies object strings in-place ([#2235](https://github.com/opal/opal/pull/2235))
+- Parser::Builder::Default.check_lvar_name patch ([#2195](https://github.com/opal/opal/pull/2195))
+
+### Changed
+
+- `String#unpack`, `Array#pack`, `String#chars`, `String#length`, `Number#chr`, and (only partially) `String#+` are now encoding aware ([#2235](https://github.com/opal/opal/pull/2235))
+- `String#inspect` now uses `\x` for binary stirngs ([#2235](https://github.com/opal/opal/pull/2235))
+- `if RUBY_ENGINE == "opal"` and friends are now outputing less JS code (#2159, #1965)
+- `Array`: `to_a`, `slice`/`[]`, `uniq`, `*`, `difference`/`-`, `intersection`/`&`, `union`/`|`, flatten now return Array, not a subclass, as Ruby 3.0 does ([#2237](https://github.com/opal/opal/pull/2237))
+- `Array`: `difference`, `intersection`, `union` now accept multiple arguments ([#2237](https://github.com/opal/opal/pull/2237))
+
+### Deprecated
+
+- Stopped testing Opal on Ruby 2.5 since it reached EOL.
+
+### Removed
+
+- Removed support for the outdated `c_lexer`, it was optional and didn't work for the last few releases of parser ([#2235](https://github.com/opal/opal/pull/2235))
+
+
+
+
+## [1.1.1](https://github.com/opal/opal/compare/v1.1.0...v1.1.1) - 2021-02-23
+
+
+### Fixed
+
+- The default runner (nodejs) wasn't starting to a bad require in the improved stack-traces ([#2182](https://github.com/opal/opal/pull/2182))
+
+
+
+
+## [1.1.0](https://github.com/opal/opal/compare/v1.0.5...v1.1.0) - 2021-02-19
+
+
+### Added
+
+- Basic support for `uplevel:` keyword argument in `Kernel#warn` ([#2006](https://github.com/opal/opal/pull/2006))
+- Added a `#respond_to_missing?` implementation for `BasicObject`, `Delegator`, `OpenStruct`, that's meant for future support in the Opal runtime, which currently ignores it ([#2007](https://github.com/opal/opal/pull/2007))
+- `Opal::Compiler#magic_comments` that allows to access magic-comments format and converts it to a hash ([#2038](https://github.com/opal/opal/pull/2038))
+- Use magic-comments to declare helpers required by the file ([#2038](https://github.com/opal/opal/pull/2038))
+- `Opal.$$` is now a shortcut for `Opal.const_get_relative` ([#2038](https://github.com/opal/opal/pull/2038))
+- `Opal.$$$` is now a shortcut for `Opal.const_get_qualified` ([#2038](https://github.com/opal/opal/pull/2038))
+- Added support for `globalThis` as the generic global object accessor ([#2047](https://github.com/opal/opal/pull/2047))
+- `Opal::Compiler#magic_comments` that allows to access magic-comments format and converts it to a hash
+- Use magic-comments to declare helpers required by the file
+- `Opal.$$` is now a shortcut for `Opal.const_get_relative`
+- `Opal.$$$` is now a shortcut for `Opal.const_get_qualified`
+- Source-map support for Node.js in the default runner ([#2045](https://github.com/opal/opal/pull/2045))
+- SecureRandom#hex(n) ([#2050](https://github.com/opal/opal/pull/2050))
+- Added a generic implementation of Kernel#caller and #warn(uplevel:) that works with sourcemaps in Node.js and Chrome ([#2065](https://github.com/opal/opal/pull/2065))
+- Added support for numblocks `-> { _1 + _2 }.call(3, 4) # => 7` ([#2149](https://github.com/opal/opal/pull/2149))
+- Support `<internal:…>` and `<js:…>` in stacktraces, like MRI we now distinguish internal lines from lib/app lines ([#2154](https://github.com/opal/opal/pull/2154))
+- `Array#difference`, `Array#intersection`, `Array#union` as aliases respectively to `Array#{-,&,|}` ([#2151](https://github.com/opal/opal/pull/2151))
+- Aliases `filter{,!}` to `select{,!}` throughout the corelib classes ([#2151](https://github.com/opal/opal/pull/2151))
+- `Enumerable#filter_map`, `Enumerable#tally` ([#2151](https://github.com/opal/opal/pull/2151))
+- Alias `Kernel#then` for `Kernel#yield_self` ([#2151](https://github.com/opal/opal/pull/2151))
+- Method chaining: `{Proc,Method}#{<<,>>}` ([#2151](https://github.com/opal/opal/pull/2151))
+- Added Integer#to_d ([#2006](https://github.com/opal/opal/pull/2006))
+- Added a compiler option `use_strict` which can also be set by the `use_strict` magic comment ([#1959](https://github.com/opal/opal/pull/1959))
+- Add `--rbrequire (-q)` option to `opal` command line executable ([#2120](https://github.com/opal/opal/pull/2120))
+
+### Fixed
+
+- Array#delete_if ([#2069](https://github.com/opal/opal/pull/2069))
+- Array#keep_if ([#2069](https://github.com/opal/opal/pull/2069))
+- Array#reject! ([#2069](https://github.com/opal/opal/pull/2069))
+- Array#select! ([#2069](https://github.com/opal/opal/pull/2069))
+- Struct#dup ([#1995](https://github.com/opal/opal/pull/1995))
+- Integer#gcdlcm ([#1972](https://github.com/opal/opal/pull/1972))
+- Enumerable#to_h ([#1979](https://github.com/opal/opal/pull/1979))
+- Enumerator#size ([#1980](https://github.com/opal/opal/pull/1980))
+- Enumerable#min ([#1982](https://github.com/opal/opal/pull/1982))
+- Enumerable#min_by ([#1985](https://github.com/opal/opal/pull/1985))
+- Enumerable#max_by ([#1985](https://github.com/opal/opal/pull/1985))
+- Set#intersect? ([#1988](https://github.com/opal/opal/pull/1988))
+- Set#disjoint? ([#1988](https://github.com/opal/opal/pull/1988))
+- Set#keep_if ([#1987](https://github.com/opal/opal/pull/1987))
+- Set#select! ([#1987](https://github.com/opal/opal/pull/1987))
+- Set#reject! ([#1987](https://github.com/opal/opal/pull/1987))
+- String#unicode_normalize ([#2175](https://github.com/opal/opal/pull/2175))
+- Module#alias_method ([#1983](https://github.com/opal/opal/pull/1983))
+- Enumerable#minmax_by ([#1981](https://github.com/opal/opal/pull/1981))
+- Enumerator#each_with_index ([#1990](https://github.com/opal/opal/pull/1990))
+- Range#== ([#1992](https://github.com/opal/opal/pull/1992))
+- Range#each ([#1991](https://github.com/opal/opal/pull/1991))
+- Enumerable#zip ([#1986](https://github.com/opal/opal/pull/1986))
+- String#getbyte ([#2141](https://github.com/opal/opal/pull/2141))
+- Struct#dup not copying `$$data` ([#1995](https://github.com/opal/opal/pull/1995))
+- Fixed usage of semicolon in single-line backticks ([#2004](https://github.com/opal/opal/pull/2004))
+- Module#attr with multiple arguments ([#2003](https://github.com/opal/opal/pull/2003))
+- `PathReader` used to try to read missing files instead of respecting the `missing_require_severity` configuration value ([#2044](https://github.com/opal/opal/pull/2044))
+- Removed some unused variables from the runtime ([#2052](https://github.com/opal/opal/pull/2052))
+- Fixed a typo in the runtime ([#2054](https://github.com/opal/opal/pull/2054))
+- Fix Regexp interpolation, previously interpolating with other regexps was broken ([#2062](https://github.com/opal/opal/pull/2062))
+- Set match on StringScanner#skip and StringScanner#scan_until ([#2061](https://github.com/opal/opal/pull/2061))
+- Fix ruby 2.7 warnings ([#2071](https://github.com/opal/opal/pull/2071))
+- Improve the --help descriptions ([#2146](https://github.com/opal/opal/pull/2146))
+- Remove BasicObject#class ([#2166](https://github.com/opal/opal/pull/2166))
+- Time#strftime %j leading zeros ([#2161](https://github.com/opal/opal/pull/2161))
+- Fix `call { true or next }` producing invalid code ([#2160](https://github.com/opal/opal/pull/2160))
+- `define_method` can now be called on the main object ([#2029](https://github.com/opal/opal/pull/2029))
+- Fix nested for-loops ([#2033](https://github.com/opal/opal/pull/2033))
+- Fix Number#round for Integers ([#2030](https://github.com/opal/opal/pull/2030))
+- Fix parsing Unicode characters from Opal ([#2073](https://github.com/opal/opal/pull/2073))
+- Integer#===: improve Integer recognition ([#2089](https://github.com/opal/opal/pull/2089))
+- Regexp: ensure ignoreCase is never undefined ([#2098](https://github.com/opal/opal/pull/2098))
+- Hash#delete: ensure String keys are converted to values ([#2106](https://github.com/opal/opal/pull/2106))
+- Array#shift: improve performance on v8 >7.1 ([#2115](https://github.com/opal/opal/pull/2115))
+- Array#pop(1): improve performance ([#2130](https://github.com/opal/opal/pull/2130))
+- Object#pretty_inspect ([#2139](https://github.com/opal/opal/pull/2139))
+- Fix conversion from UTF-8 to bytes ([#2138](https://github.com/opal/opal/pull/2138))
+- Restore compatibility with Chrome 38, used by Cordova and many mobile browsers ([#2109](https://github.com/opal/opal/pull/2109))
+
+### Changed
+
+- Updated outdated parser version ([#2013](https://github.com/opal/opal/pull/2013))
+- Nashorn has been deprecated but GraalVM still supports it ([#1997](https://github.com/opal/opal/pull/1997))
+- "opal/mini" now includes "opal/io" ([#2002](https://github.com/opal/opal/pull/2002))
+- Regexps assigned to constants are now frozen ([#2007](https://github.com/opal/opal/pull/2007))
+- `Opal.$$` changed from being the constant cache of Object to being a shortcut for `Opal.const_get_relative` ([#2038](https://github.com/opal/opal/pull/2038))
+- Moved REPL implementation from bin/ to its own lib/ file as `opal/repl.rb` ([#2048](https://github.com/opal/opal/pull/2048))
+- `Encoding.default_external` is now initialized with `__ENCODING__` ([#2072](https://github.com/opal/opal/pull/2072))
+- Keep the MersenneTwister implementation private ([#2108](https://github.com/opal/opal/pull/2108))
+- Change parser to 3.0 ([#2148](https://github.com/opal/opal/pull/2148))
+- Fix forwarding a rescued error to a global var: `rescue => $gvar` ([#2154](https://github.com/opal/opal/pull/2154))
+- Now using Parser v3.0 and targeting Ruby 3.0 ([#2156](https://github.com/opal/opal/pull/2156))
+- `Comparable#clamp` to support a Range argument ([#2151](https://github.com/opal/opal/pull/2151))
+- `#to_h` method to support a block (shortform for `.map(&block).to_h`) ([#2151](https://github.com/opal/opal/pull/2151))
+- BigDecimal is now a subclass of Numeric ([#2006](https://github.com/opal/opal/pull/2006))
+- PP to be rebased on upstream Ruby version ([#2083](https://github.com/opal/opal/pull/2083))
+- String to report UTF-8 encoding by default, as MRI does ([#2117](https://github.com/opal/opal/pull/2117))
+- Don't output "Failed to load WithCLexer, using pure Ruby lexer" warning unless in $DEBUG mode ([#2174](https://github.com/opal/opal/pull/2174))
+
+### Deprecated
+
+- Requiring nodejs/stacktrace has been deprecated, source-maps are already
+  supported by the default Node.js runner or by requiring https://github.com/evanw/node-source-map-support
+  before loading code compiled by Opal ([#2045](https://github.com/opal/opal/pull/2045))
+
+### Removed
+
+- Removed special compilation for the `Opal.truthy?` and `Opal.falsy?` helpers ([#2076](https://github.com/opal/opal/pull/2076))
+- Removed the deprecated `tainting` compiler config option ([#2072](https://github.com/opal/opal/pull/2072))
+
+
+
+
+## [1.0.5](https://github.com/opal/opal/compare/v1.0.4...v1.0.5) - 2020-12-23
+
+
+### Fixed
+
+- [Backported] Add --rbrequire (-q) option to opal cmdline tool ([#2120](https://github.com/opal/opal/pull/2120))
+- Improve the --help descriptions ([#2146](https://github.com/opal/opal/pull/2146))
+
+
+
+
+## [1.0.4](https://github.com/opal/opal/compare/v1.0.3...v1.0.4) - 2020-12-13
+
+
+### Fixed
+
+- [Backported] Using the `--map` / `-P` CLI option was only working in conjunction with other options ([#1974](https://github.com/opal/opal/pull/1974))
+
+
+
+
+## [1.0.3](https://github.com/opal/opal/compare/v1.0.2...v1.0.3) - 2020-02-01
+
+
+### Fixed
+
+- Fixed compiling code with Unicode chars from Opal with opal-parser ([#2074](https://github.com/opal/opal/pull/2074))
+
+
+
+
+## [1.0.2](https://github.com/opal/opal/compare/v1.0.1...v1.0.2) - 2019-12-15
+
+
+- Increase the timeout for starting Chrome within the Chrome runner ([#2037](https://github.com/opal/opal/pull/2037))
+- Run the Opal code within the body inside Chrome runner, it fixes an issue in opal-rspec ([#2037](https://github.com/opal/opal/pull/2037))
+
+
+
+
+## [1.0.1](https://github.com/opal/opal/compare/v1.0.0...v1.0.1) - 2019-12-08
+
+
+### Changed
+
+- Relaxed parser version requirement ([#2013](https://github.com/opal/opal/pull/2013))
+
+
+
+
+## [1.0.0](https://github.com/opal/opal/compare/v0.11.4...v1.0.0) - 2019-05-12
+
+
+### Added
+
+- Added `Module#prepend` and completely overhauled the module and class inheritance system ([#1826](https://github.com/opal/opal/pull/1826))
+- Methods and properties are now assigned with `Object.defineProperty()` as non-enumerable ([#1821](https://github.com/opal/opal/pull/1821))
+- Backtrace now includes the location inside the source file for syntax errors ([#1814](https://github.com/opal/opal/pull/1814))
+- Added support for a faster C-implemented lexer, it's enough to add `gem 'c_lexer` to the `Gemfile` ([#1806](https://github.com/opal/opal/pull/1806))
+- Added `Date#to_n` that returns the JavaScript Date object (in native.rb). (#1779, #1792)
+- Added `Array#pack` (supports only `C, S, L, Q, c, s, l, q, A, a` formats). ([#1723](https://github.com/opal/opal/pull/1723))
+- Added `String#unpack` (supports only `C, S, L, Q, S>, L>, Q>, c, s, l, q, n, N, v, V, U, w, A, a, Z, B, b, H, h, u, M, m` formats). ([#1723](https://github.com/opal/opal/pull/1723))
+- Added `File#symlink?` for Node.js. ([#1725](https://github.com/opal/opal/pull/1725))
+- Added `Dir#glob` for Node.js (does not support flags). ([#1727](https://github.com/opal/opal/pull/1727))
+- Added support for a static folder in the "server" CLI runner via the `OPAL_CLI_RUNNERS_SERVER_STATIC_FOLDER` env var
+- Added the CLI option `--runner-options` that allows passing arbitrary options to the selected runner, currently the only runner making use of them is `server` accepting `port` and `static_folder`
+- Added a short helper to navigate constants manually: E.g. `Opal.$$.Regexp.$$.IGNORECASE` (see docs for "Compiled Ruby")
+- Added initial support for OpenURI module (using XMLHttpRequest on browser and [xmlhttprequest](https://www.npmjs.com/package/xmlhttprequest) on Node). ([#1735](https://github.com/opal/opal/pull/1735))
+- Added `String#prepend` to the list of unsupported methods (because String are immutable in JavaScript)
+- Added methods (most introduced in 2.4/2.5):
+    * `Array#prepend` ([#1757](https://github.com/opal/opal/pull/1757))
+    * `Array#append` ([#1757](https://github.com/opal/opal/pull/1757))
+    * `Array#max` ([#1757](https://github.com/opal/opal/pull/1757))
+    * `Array#min` ([#1757](https://github.com/opal/opal/pull/1757))
+    * `Complex#finite?` ([#1757](https://github.com/opal/opal/pull/1757))
+    * `Complex#infinite?` ([#1757](https://github.com/opal/opal/pull/1757))
+    * `Complex#infinite?` ([#1757](https://github.com/opal/opal/pull/1757))
+    * `Date#to_time` ([#1757](https://github.com/opal/opal/pull/1757))
+    * `Date#next_year` ([#1885](https://github.com/opal/opal/pull/1885))
+    * `Date#prev_year` ([#1885](https://github.com/opal/opal/pull/1885))
+    * `Hash#slice` ([#1757](https://github.com/opal/opal/pull/1757))
+    * `Hash#transform_keys` ([#1757](https://github.com/opal/opal/pull/1757))
+    * `Hash#transform_keys!` ([#1757](https://github.com/opal/opal/pull/1757))
+    * `Numeric#finite?` ([#1757](https://github.com/opal/opal/pull/1757))
+    * `Numeric#infinite?` ([#1757](https://github.com/opal/opal/pull/1757))
+    * `Numeric#infinite?` ([#1757](https://github.com/opal/opal/pull/1757))
+    * `Integer#allbits?` ([#1757](https://github.com/opal/opal/pull/1757))
+    * `Integer#anybits?` ([#1757](https://github.com/opal/opal/pull/1757))
+    * `Integer#digits` ([#1757](https://github.com/opal/opal/pull/1757))
+    * `Integer#nobits?` ([#1757](https://github.com/opal/opal/pull/1757))
+    * `Integer#pow` ([#1757](https://github.com/opal/opal/pull/1757))
+    * `Integer#remainder` ([#1757](https://github.com/opal/opal/pull/1757))
+    * `Integer.sqrt` ([#1757](https://github.com/opal/opal/pull/1757))
+    * `Random.urandom` ([#1757](https://github.com/opal/opal/pull/1757))
+    * `String#delete_prefix` ([#1757](https://github.com/opal/opal/pull/1757))
+    * `String#delete_suffix` ([#1757](https://github.com/opal/opal/pull/1757))
+    * `String#casecmp?` ([#1757](https://github.com/opal/opal/pull/1757))
+    * `Kernel#yield_self` ([#1757](https://github.com/opal/opal/pull/1757))
+    * `String#unpack1` ([#1757](https://github.com/opal/opal/pull/1757))
+	* `String#to_r` ([#1842](https://github.com/opal/opal/pull/1842))
+	* `String#to_c` ([#1842](https://github.com/opal/opal/pull/1842))
+	* `String#match?` ([#1842](https://github.com/opal/opal/pull/1842))
+	* `String#unicode_normalize` returns self ([#1842](https://github.com/opal/opal/pull/1842))
+	* `String#unicode_normalized?` returns true ([#1842](https://github.com/opal/opal/pull/1842))
+	* `String#[]=` throws `NotImplementedError`([#1836](https://github.com/opal/opal/pull/1836))
+
+- Added support of the `pattern` argument for `Enumerable#all?`, `Enumerable#any?`, `Enumerable#none?`. ([#1757](https://github.com/opal/opal/pull/1757))
+- Added `ndigits` option support to `Number#floor`, `Number#ceil`, `Number#truncate`. ([#1757](https://github.com/opal/opal/pull/1757))
+- Added `key` and `receiver` attributes to the `KeyError`. ([#1757](https://github.com/opal/opal/pull/1757))
+- Extended `Struct.new` to support `keyword_init` option. ([#1757](https://github.com/opal/opal/pull/1757))
+- Added a new `Opal::Config.missing_require_severity` option and relative `--missing-require` CLI flag. This option will command how the builder will behave when a required file is missing. Previously the behavior was undefined and partly controlled by `dynamic_require_severity`. Not to be confused with the runtime config option `Opal.config.missing_require_severity;` which controls the runtime behavior.
+- Added `Matrix` (along with the internal MRI utility `E2MM`)
+- Use shorter helpers for constant lookups, `$$` for relative (nesting) lookups and `$$$` for absolute (qualified) lookups
+- Add support for the Mersenne Twister random generator, the same used by CRuby/MRI (#657 & #1891)
+- [Nodejs] Added support for binary data in `OpenURI` (#1911, #1920)
+- [Nodejs] Added support for binary data in `File#read` (#1919, #1921)
+- [Nodejs] Added support for `File#readlines` ([#1882](https://github.com/opal/opal/pull/1882))
+- [Nodejs] Added support for `ENV#[]`, `ENV#[]=`, `ENV#key?`, `ENV#has_key?`, `ENV#include?`, `ENV#member?`, `ENV#empty?`, `ENV#keys`, `ENV#delete` and `ENV#to_s` ([#1928](https://github.com/opal/opal/pull/1928))
+
+
+### Changed
+
+- **BREAKING** The dot (`.`) character is no longer replaced with [\s\S] in a multiline regexp passed to Regexp#match and Regexp#match? (#1796, #1795)
+  * You're advised to always use [\s\S] instead of . in a multiline regexp, which is portable between Ruby and JavaScript
+- **BREAKING** `Kernel#format` (and `sprintf` alias) are now in a dedicated module `corelib/kernel/format` and available exclusively in `opal` ([#1930](https://github.com/opal/opal/pull/1930))
+  * Previously the methods were part of the `corelib/kernel` module and available in both `opal` and `opal/mini`
+- Filename extensions are no longer stripped from filenames internally, resulting in better error reporting ([#1804](https://github.com/opal/opal/pull/1804))
+- The internal API for CLI runners has changed, now it's just a callable object
+- The `--map` CLI option now works only in conjunction with `--compile` (or `--runner compiler`)
+- The `node` CLI runner now adds its `NODE_PATH` entry instead of replacing the ENV var altogether
+- Added `--disable-web-security` option flag to the Chrome headless runner to be able to do `XMLHttpRequest`
+- Migrated parser to 2.5. Bump RUBY_VERSION to 2.5.0.
+- Exceptions raised during the compilation now add to the backtrace the current location of the opal file if available ([#1814](https://github.com/opal/opal/pull/1814)).
+- Better use of `displayName` on functions and methods and more readable temp variable names ([#1910](https://github.com/opal/opal/pull/1910))
+- Source-maps are now inlined and already contain sources, incredibly more stable and precise ([#1856](https://github.com/opal/opal/pull/1856))
+
+
+### Deprecated
+
+- The CLI `--server-port 1234` option is now deprecated in favor of using `--runner-options='{"port": 1234}'`
+- Including `::Native` is now deprecated because it generates conflicts with core classes in constant lookups (both `Native::Object` and `Native::Array` exist). Instead `Native::Werapper` should be used.
+- Using `node_require 'my_module'` to access the native `require()` function in Node.js is deprecated in favor of <code>\`require('my_module')\`</code> because static builders need to parse the call in order to function ([#1886](https://github.com/opal/opal/pull/1886)).
+
+
+### Removed
+
+- The `node` CLI runner no longer supports passing extra node options via the `NODE_OPT` env var, instead Node.js natively supports the `NODE_OPTIONS` env var.
+- The gem "hike" is no longer an external dependency and is now an internal dependency available as `Opal::Hike` ([#1881](https://github.com/opal/opal/pull/1881))
+- Removed the internal Opal class `Marshal::BinaryString` ([#1914](https://github.com/opal/opal/pull/1914))
+- Removed Racc, as it's now replaced by the parser gem ([#1880](https://github.com/opal/opal/pull/1880))
+
+
+
+### Fixed
+
+- Fix handling of trailing semicolons and JavaScript returns inside x-strings, the behavior is now well defined and covered by proper specs ([#1776](https://github.com/opal/opal/pull/1776))
+- Fixed singleton method definition to return method name. ([#1757](https://github.com/opal/opal/pull/1757))
+- Allow passing number of months to `Date#next_month` and `Date#prev_month`. ([#1757](https://github.com/opal/opal/pull/1757))
+- Fixed `pattern` argument handling for `Enumerable#grep` and `Enumerable#grep_v`. ([#1757](https://github.com/opal/opal/pull/1757))
+- Raise `ArgumentError` instead of `TypeError` from `Numeric#step` when step is not a number. ([#1757](https://github.com/opal/opal/pull/1757))
+- At run-time `LoadError` wasn't being raised even with `Opal.config.missing_require_severity;` set to `'error'`.
+- Fixed `Kernel#public_methods` to return instance methods if the argument is set to false. ([#1848](https://github.com/opal/opal/pull/1848))
+- Fixed an issue in `String#gsub` that made it start an infinite loop when used recursively. ([#1879](https://github.com/opal/opal/pull/1879))
+- `Kernel#exit` was using status 0 when a number or a generic object was provided, now accepts numbers and tries to convert objects with `#to_int` (#1898, #1808).
+- Fixed metaclass inheritance in subclasses of Module ([#1901](https://github.com/opal/opal/pull/1901))
+- `Method#to_proc` now correctly sets parameters and arity on the resulting Proc ([#1903](https://github.com/opal/opal/pull/1903))
+- Fixed bridged classes having their prototype removed from the original chain by separating them from the Ruby class ([#1909](https://github.com/opal/opal/pull/1909))
+- Improve `String#to_proc` performance ([#1888](https://github.com/opal/opal/pull/1888))
+- Fixed/updated the examples ([#1887](https://github.com/opal/opal/pull/1887))
+- `Opal.ancestors()` now returns false for when provided with JS-falsy objects ([#1839](https://github.com/opal/opal/pull/1839))
+- When subclassing now the constant is set before calling `::inherited` ([#1838](https://github.com/opal/opal/pull/1838))
+- `String#to_sym` now returns the string literal ([#1835](https://github.com/opal/opal/pull/1835))
+- `String#center` now correctly checks length ([#1833](https://github.com/opal/opal/pull/1833))
+- `redo` inside `while` now works properly ([#1820](https://github.com/opal/opal/pull/1820))
+- Fixed compilation of empty/whitespace-only x-strings ([#1811](https://github.com/opal/opal/pull/1811))
+- Fix `||=` assignments on constants when the constant is not yet defined ([#1935](https://github.com/opal/opal/pull/1935))
+- Fix `String#chomp` to return an empty String when `arg == self` ([#1936](https://github.com/opal/opal/pull/1936))
+- Fix methods of `Comparable` when `<=>` does not return Numeric ([#1945](https://github.com/opal/opal/pull/1945))
+- Fix `Class#native_alias` error message ([#1946](https://github.com/opal/opal/pull/1946))
+- Fix `gmt_offset` (alias `utc_offset`) should return 0 if the date is UTC ([#1941](https://github.com/opal/opal/pull/1941))
+- `exceptionDetails.stackTrace` can be undefined ([#1955](https://github.com/opal/opal/pull/1955))
+- Implement `String#each_codepoint` and `String#codepoints` (#1944, #1947)
+- [internal] Terminate statement with semi-colon and remove unecessary semi-colon ([#1948](https://github.com/opal/opal/pull/1948))
+- Some steps toward "strict mode" ([#1953](https://github.com/opal/opal/pull/1953))
+- Preserve `Exception.stack`, in some cases the backtrace was lost ([#1963](https://github.com/opal/opal/pull/1963))
+- Make `String#ascii_only?` a little less wrong ([#1951](https://github.com/opal/opal/pull/1951))
+- Minor fixes to `::Native` ([#1957](https://github.com/opal/opal/pull/1957))
+
+
+
+
+## [0.11.4](https://github.com/opal/opal/compare/v0.11.3...v0.11.4) - 2018-11-07
+
+
+### Fixed
+
+- `Kernel#exit` was using status 0 when a number or a generic object was provided, now accepts numbers and tries to convert objects with `#to_int`.
+
+
+
+
+## [0.11.3](https://github.com/opal/opal/compare/v0.11.2...v0.11.3) - 2018-08-28
+
+
+### Fixed
+
+- Fixed `Array#dup` when `method_missing` support was disabled
+
+
+
+
+## [0.11.2](https://github.com/opal/opal/compare/v0.11.1...v0.11.2) - 2018-08-24
+
+
+### Fixed
+
+- Remove symlink that caused problems on Windows
+
+
+
+
+## [0.11.1](https://github.com/opal/opal/compare/v0.11.0...v0.11.1) - 2018-07-17
+
+
+### Added
+
+- Added support for a static folder in the "server" CLI runner via the `OPAL_CLI_RUNNERS_SERVER_STATIC_FOLDER` env var
+- Added ability to pass the port to the "server" CLI runner using the `OPAL_CLI_RUNNERS_SERVER_PORT` (explicit option passed via CLI is still working but deprecated)
+- Added a new `Opal::Config.missing_require_severity` option and relative `--missing-require` CLI flag. This option will command how the builder will behave when a required file is missing. Previously the behavior was undefined and partly controlled by `dynamic_require_severity`. Not to be confused with the runtime config option `Opal.config.missing_require_severity;` which controls the runtime behavior.
+- At run-time `LoadError` wasn't being raised even with `Opal.config.missing_require_severity;` set to `'error'`.
+
+
+
+
+## [0.11.0](https://github.com/opal/opal/compare/v0.10.6...v0.11.0) - 2017-12-08
+
+
+### Added
+
+- Added support for complex (`0b1110i`) and rational (`0b1111r`) number literals. ([#1487](https://github.com/opal/opal/pull/1487))
+- Added 2.3.0 methods:
+    * `Array#bsearch_index`
+    * `Array#dig`
+    * `Enumerable#chunk_while`
+    * `Enumerable#grep_v`
+    * `Enumerable#slice_after`
+    * `Enumerable#slice_when`
+    * `Hash#>`
+    * `Hash#<`
+    * `Hash#>=`
+    * `Hash#>=`
+    * `Hash#dig`
+    * `Hash#fetch_values`
+    * `Hash#to_proc`
+    * `Struct#dig`
+    * `Kernel#itself`
+- Added safe navigator (`&.`) support. ([#1532](https://github.com/opal/opal/pull/1532))
+- Added Random class with seed support. The following methods were reworked to use it:
+    * `Kernel.rand`
+    * `Kernel.srand`
+    * `Array#shuffle`
+    * `Array#shuffle!`
+    * `Array#sample`
+- Added rudimental history support to `opal-repl`, just create the history file (`~/.opal-repl-history`) and it record the last 1000 lines
+- Added `JS::Error` error class that can be used to catch any JS error.
+- Added `Method#source_location` and `Method#comments`.
+- Added a deprecation API that can be set to raise on deprecation with: `Opal.raise_on_deprecation = true`
+- Added `Opal::SimpleServer` as the quickest way to get up and running with Opal: `rackup -ropal -ropal/simple_server -b 'Opal.append_path("app"); run Opal::SimpleServer.new'`
+- Added `String#ascii_only?` ([#1592](https://github.com/opal/opal/pull/1592))
+- Added `StringScanner#matched_size` ([#1595](https://github.com/opal/opal/pull/1595))
+- Added `Hash#compare_by_identity` ([#1657](https://github.com/opal/opal/pull/1657))
+
+
+### Removed
+
+- Dropped support for IE8 and below, and restricted Safari and Opera support to the last two versions
+- Dropped support for PhantomJS as it was [abandoned](https://groups.google.com/forum/#!topic/phantomjs/9aI5d-LDuNE).
+
+
+### Changed
+
+- Removed self-written lexer/parser. Now uses parser/ast gems to convert source code to AST. ([#1465](https://github.com/opal/opal/pull/1465))
+- Migrated parser to 2.3. Bump RUBY_VERSION to 2.3.0.
+- Changed to be 2.3 compliant:
+    * `Enumerable#chunk` (to take only a a block)
+    * `Enumerable#slice_before` (to raise proper argument errors)
+    * `Number#positive?` (to return false for 0)
+- Use meaningful names for temporary variables in compiled JavaScript (e.g. for `def foo` was `TMP_123`, now `TMP_foo_123`)
+- Dynamic require severity now defaults to `:ignore` meaning that by default a `LoadError` will be raised at runtime instead of compile time.
+
+
+### Deprecated
+
+- `require 'opal/server` and `Opal::Server` are deprecated in favor of `require 'opal/sprockets/server'` and `Opal::Sprockets::Server` (now part of the opal-sprockets gem).
+
+
+### Removed
+
+- Removed `yaml` from stdlib, the older implementation was only available for NodeJS and not tested. Replace with `require 'nodejs/yaml'`
+- Extracted sprockets support to `opal-sprockets` which should allow for wider support and less coupling (e.g. the `opal` gem will now be able to improve the compiler without worrying about `sprockets` updates). All the old behavior is preserved except for `Opal::Server` that has become `Opal::Sprockets::Server` (see Deprecated section above).
+
+
+### Changed
+
+- Strip Regexp flags that are unsupported by browsers (backport), previously they were ignored, lately most of them now raise an error for unknown flags.
+
+
+### Fixed
+
+- Newly compliant with the Ruby Spec Suite:
+    * `Module#class_variables`
+    * `Module#class_variable_get`
+    * `Module#class_variable_set`
+    * `Module#remove_class_variable`
+    * `Module#include?`
+    * `Numeric#step` ([#1512](https://github.com/opal/opal/pull/1512))
+
+- Improvements for Range class ([#1486](https://github.com/opal/opal/pull/1486))
+    * Moved private/tainted/untrusted specs to not supported
+    * Conforming `Range#to_s` and `Range#inspect`
+    * Starting `Range#bsearch` implementation
+    * Simple `Range#step` implementation
+    * Fixing `Range#min` for empty Ranges
+    * Fixing `Range#last(n)` `Range#first(n)` and one edge case of `Range#each`
+    * Fixing some `Range#step` issues on String ranges
+    * Simple `Range#bsearch` implementation, passes about half the specs
+    * Minor styling improvements. Fixed size of `Range#step`.
+    * Compile complex ranges to "Range.new" so there will be a check for begin and end to be comparable.
+
+- Fixed `defined?` for methods raising exceptions
+- Fixed `Kernel#loop` (to catch `StopIteration` error)
+- Fixed inheritance from the `Module` class.
+- Fixed using `--preload` along with `--no-opal` for CLI
+- Fixed `Integer("0")` raising `ArgumentError` instead of parsing as 0
+- Fixed `JSON#parse` to raise `JSON::ParserError` for invalid input
+- `Module#append_features` now detects cyclic includes
+- `Process.clock_gettime(Process::CLOCK_MONOTONIC)` will now return true monotonic values or raise `Errno::EINVAL` if no monotonic clock is available
+- Opal::Builder no longer always raises an error when a dependency isn't found and instead respects `dynamic_require_severity` value
+- Fixed a constant reference to `Sprockets::FileNotFound` that previously pointed to `Opal::Sprockets` instead of `::Sprockets`.
+
+
+
+
+## [0.10.6](https://github.com/opal/opal/compare/v0.10.5...v0.10.6) - 2018-06-21
+
+
+### Changed
+
+- Strip Regexp flags that are unsupported by browsers (backport), previously they were ignored, lately most of them now raise an error for unknown flags.
+
+
+### Fixed
+
+- Fixed a constant reference to `Sprockets::FileNotFound` that previously pointed to `Opal::Sprockets` instead of `::Sprockets`.
+
+
+
+
+## [0.10.5](https://github.com/opal/opal/compare/v0.10.4...v0.10.5) - 2017-06-21
+
+
+### Fixed
+
+- Fix `Time#zone` for zones expressed numerically
+
+
+
+
+## [0.10.4](https://github.com/opal/opal/compare/v0.10.3...v0.10.4) - 2017-05-06
+
+
+### Changed
+
+- Better `Opal::Config` options documentation and organization
+- Always cache source-maps at build-time so they're available once enabled
+
+
+
+
+## [0.10.3](https://github.com/opal/opal/compare/v0.10.2...v0.10.3) - 2016-10-31
+
+
+### Fixed
+
+- Fixed inheritance from the `Module` class ([#1476](https://github.com/opal/opal/pull/1476))
+- Fixed source map server with url-encoded paths
+- Silence Sprockets 3.7 deprecations, full support for Sprockets 4 will be available in Opal 0.11
+- Don't print the full stack trace with deprecation messages
+
+
+
+
+## [0.10.2](https://github.com/opal/opal/compare/v0.10.1...v0.10.2) - 2016-09-09
+
+
+### Changed
+
+- Avoid special utf-8 chars in method names, now they start with `$$`
+
+
+
+
+## [0.10.1](https://github.com/opal/opal/compare/v0.10.0...v0.10.1) - 2016-07-06
+
+
+### Fixed
+
+- Fixed `-L` option for compiling requires as modules ([#1510](https://github.com/opal/opal/pull/1510))
+
+
+
+
+## [0.10.0](https://github.com/opal/opal/compare/v0.9.4...v0.10.0) - 2016-07-04
+
+
+### Added
+
+- Pathname#relative_path_from
+- Source maps now include method names
+- `Module#included_modules` works
+- Internal runtime cleanup ([#1241](https://github.com/opal/opal/pull/1241))
+- Make it easier to add custom runners for the CLI ([#1261](https://github.com/opal/opal/pull/1261))
+- Add Rack v2 compatibility ([#1260](https://github.com/opal/opal/pull/1260))
+- Newly compliant with the Ruby Spec Suite:
+    * `Array#slice!`
+    * `Array#repeated_combination`
+    * `Array#repeated_permutation`
+    * `Array#sort_by!`
+    * `Enumerable#sort`
+    * `Enumerable#max`
+    * `Enumerable#each_entry` ([#1303](https://github.com/opal/opal/pull/1303))
+    * `Module#const_set`
+    * `Module#module_eval` with a string
+- Add `-L` / `--library` option to compile only the code of the library ([#1281](https://github.com/opal/opal/pull/1281))
+- Implement `Kernel.open` method ([#1218](https://github.com/opal/opal/pull/1218))
+- Generate meaningful names for functions representing Ruby methods
+- Implement `Pathname#join` and `Pathname#+` methods ([#1301](https://github.com/opal/opal/pull/1301))
+- Added support for `begin;rescue;else;end`.
+- Implement `File.extname` method ([#1219](https://github.com/opal/opal/pull/1219))
+- Added support for keyword arguments as lambda parameters.
+- Super works with define_method blocks
+- Added support for kwsplats.
+- Added support for squiggly heredoc.
+- Implement `Method#parameters` and `Proc#parameters`.
+- Implement `File.new("path").mtime`, `File.mtime("path")`, `File.stat("path").mtime`.
+- if-conditions now support `null` and `undefined` as falsy values ([#867](https://github.com/opal/opal/pull/867))
+- Implement IO.read method for Node.js ([#1332](https://github.com/opal/opal/pull/1332))
+- Implement IO.each_line method for Node.js ([#1221](https://github.com/opal/opal/pull/1221))
+- Generate `opal-builder.js` to ease the compilation of Ruby library from JavaScript ([#1290](https://github.com/opal/opal/pull/1290))
+
+
+### Changed
+
+- Remove deprecation of `Opal::Environment` after popular request
+- Setting `Opal::Config.dynamic_require_severity` will no longer affect `Opal.dynamic_require_severity` which now needs to be explicitly set if it differs from the default value of `"warning"` (See also the `Opal.dynamic_require_severity` rename below).
+- The new default for `Opal::Config.dynamic_require_severity` is now `:warning`
+- `Opal.dynamic_require_severity` and `OPAL_CONFIG` are now merged into `Opal.config.missing_require_severity` (defaults to `error`, the expected ruby behavior) and `Opal.config.unsupported_features_severity` (defaults to `warning`, e.g. a one-time heads up that freezing isn't supported). Added variable `__OPAL_COMPILER_CONFIG__` that contains compiler options that may be used in runtime.
+- `Hash` instances should now list the string map (`$$smap`) as the first key, making debugging easier (most hashes will just have keys there).
+- Handle Pathname object in Pathname constructor
+
+
+### Deprecated
+
+- `Opal::Processor.stubbed_files` and `Opal::Processor.stub_file` in favor of `Opal::Config.stubbed_files`
+
+
+### Removed
+
+- Removed the previously deprecated `Opal::Fragment#to_code`
+- Removed the previously deprecated `Opal::Processor.load_asset_code`
+- Removed the previously deprecated acceptance of a boolean as single argument to `Opal::Server.new`
+
+
+### Fixed
+
+- `Module#ancestors` and shared code like `====` and `is_a?` deal with singleton class modules better ([#1449](https://github.com/opal/opal/pull/1449))
+- `Class#to_s` now shows correct names for singleton classes
+- `Pathname#absolute?` and `Pathname#relative?` now work properly
+- `File::dirname` and `File::basename` are now Rubyspec compliant
+- `SourceMap::VLQ` patch ([#1075](https://github.com/opal/opal/pull/1075))
+- `Regexp::new` no longer throws error when the expression ends in \\\\
+- `super` works properly with overwritten alias methods ([#1384](https://github.com/opal/opal/pull/1384))
+- `NoMethodError` does not need a name to be instantiated
+- `method_added` fix for singleton class cases
+- Super now works properly with blocks ([#1237](https://github.com/opal/opal/pull/1237))
+- Fix using more than two `rescue` in sequence ([#1269](https://github.com/opal/opal/pull/1269))
+- Fixed inheritance for `Array` subclasses.
+- Always populate all stub_subscribers with all method stubs, as a side effect of this now `method_missing` on bridged classes now works reliably ([#1273](https://github.com/opal/opal/pull/1273))
+- Fix `Hash#instance_variables` to not return `#default` and `#default_proc` ([#1258](https://github.com/opal/opal/pull/1258))
+- Fix `Module#name` when constant was created using `Opal.cdecl` (constant declare) like `ChildClass = Class.new(BaseClass)` ([#1259](https://github.com/opal/opal/pull/1259))
+- Fix issue with JavaScript `nil` return paths being treated as true ([#1274](https://github.com/opal/opal/pull/1274))
+- Fix `Array#to_n`, `Hash#to_n`, `Struct#to_n` when the object contains native objects (#1249, #1256)
+- `break` semantics are now correct, except for the case in which a lambda containing a `break` is passed to a `yield` ([#1250](https://github.com/opal/opal/pull/1250))
+- Avoid double "/" when `Opal::Sprockets.javascript_include_tag` receives a prefix with a trailing slash.
+- Fixed context of evaluation for `Kernel#eval` and `BasicObject#instance_eval`
+- Fix `Module#===` to use all ancestors of the passed object ([#1284](https://github.com/opal/opal/pull/1284))
+- Fix `Struct.new` to be almost compatible with Rubyspec ([#1251](https://github.com/opal/opal/pull/1251))
+- Fix `Enumerator#with_index` to return the result of the previously called method.
+- Improved `Date.parse` to cover most date formatting cases.
+- Fixed `Module#const_get` for dynamically created constants.
+- Fixed `File.dirname` to return joined String instead of Array.
+- Fixed multiple assignment for constants, i.e., allowing `A, B = 1, 2`.
+- Fixed `Number#[]` with negative number. Now `(-1)[1]` returns 1.
+- Fixed parsing of pre-defined `$-?` global variables.
+- Fixed parsing of unicode constants.
+- Fixed parsing of quoted heredoc identifier.
+- Fixed parsing of mass assignment of method call without parentheses.
+- Fixed parsing of `%I{}` lists.
+- Fixed parsing of `%{}` lists when list item contains same brackets.
+- Fixed an issue with `"-"` inside the second arg of `String#tr`
+- Fixed Base64 and enabled specs
+- Fixed method definition in method body.
+- Partially implemented `Marshal.load`/`Marshal.dump`. In order to use it require `opal/full`.
+- Fixed docs for Compiled Ruby - Native section. Rename opal variable to win since window was causing error
+- Fixed the `--map` option, now correclty outputs the sourcemap as json
+
+
+### Removed
+
+- Remove support for configuring Opal via `Opal::Processor`, the correct place is `Opal::Config`
+- Remove `Opal.process` which used to be an alias to `Sprockets::Environment#[]`
+
+
+
+
+## [0.9.4](https://github.com/opal/opal/compare/v0.9.3...v0.9.4) - 2016-06-20
+
+
+### Fixed
+
+- Rebuilt the gem with Rubygems 2.4.8 as building with 2.5.1+ would make the gem un-installable
+
+- Removed all symlinks from `node_module` directories to avoid further issues building the gem
+
+
+
+
+## [0.9.3](https://github.com/opal/opal/compare/v0.9.2...v0.9.3) - 2016-06-16
+
+
+### Fixed
+
+- `Hash#initialize` now accepts JS `null` as well as `undefined`, restoring its 0.8 behavior
+
+
+
+
+## [0.9.2](https://github.com/opal/opal/compare/v0.9.1...v0.9.2) - 2016-01-09
+
+
+### Fixed
+
+- Rebuilt the gem with Ruby 2.2 as building with 2.3 would make the gem un-installable
+
+
+
+
+## [0.9.1](https://github.com/opal/opal/compare/v0.9.0...v0.9.1) - 2016-01-09
+
+
+### Fixed
+
+- Backport rack2 compatibility ([#1260](https://github.com/opal/opal/pull/1260))
+- Fixed issue with JS nil return paths being treated as true ([#1274](https://github.com/opal/opal/pull/1274))
+- Fix using more than two `rescue` in sequence ([#1269](https://github.com/opal/opal/pull/1269))
+
+
+
+
+## [0.9.0](https://github.com/opal/opal/compare/v0.8.1...v0.9.0) - 2015-12-20
+
+
+### Added
+
+- A `console` wrapper has been added to the stdlib, requiring it will make available the `$console` global variable.
+- `method_added`, `method_removed` and `method_undefined` reflection now works.
+- `singleton_method_added`, `singleton_method_removed` and `singleton_method_undefined` reflection now works.
+- Now you can bridge a native class to a Ruby class that inherits from another Ruby class
+- `Numeric` semantics are now compliant with Ruby.
+- `Complex` has been fully implemented.
+- `Rational` has been fully implemented.
+- `Kernel#raise` now properly re-raises exceptions (regardless of how many levels deep you are) and works properly if supplied a class that has an exception method.
+- `Exception#exception`, `Exception::exception`, `Exception#message`, and `Exception#to_s` are fully implemented
+- You can make direct JavaScript method calls on using the `recv.JS.method`syntax. Has support for method calls, final callback (as a block), property getter and setter (via `#[]` and `#[]=`), splats, JavaScript keywords (via the `::JS` module) and global functions (after `require "js"`).
+- `Set#superset?`, `Set#subset?`, and the respective `proper_` variant of each are now implemented
+- `NameError` and `NoMethodError` - add `#name` and `#args` attributes
+- `RegExp#match` now works correctly in multiline mode with white space
+- `BasicObject#instance_eval` now can accept a string argument (after `require "opal-parser"`)
+- Adds Nashorn (Java 8+ Javascript engine) runner `bundle exec bin/opal -R nashorn -r nashorn hello.rb`
+
+- Newly compliant with the Ruby Spec Suite:
+    * `Enumerable#chunk`
+    * `Enumerable#each_cons`
+    * `Enumerable#minmax`
+    * `Range#to_a` ([#1246](https://github.com/opal/opal/pull/1246))
+    * `Module` comparison methods: `#<` `#<=` `#<=>` `#>` `#>=`
+    - `OpenStruct#method_missing`
+    - `OpenStruct#inspect`
+    - `OpenStruct#to_s`
+    - `OpenStruct#delete_field`
+
+
+### Changed
+
+- Renamed:
+    - `Hash.keys` => `Hash.$$keys`
+    - `Hash.map` => `Hash.$$map`
+    - `Hash.smap` => `Hash.$$smap`
+- `Kernel#pp` no longer forwards arguments directly to `console.log`, this behavior has been replaced by stdlib's own `console.rb` (see above).
+- `Opal::Sprockets.javascript_include_tag` has been added to allow easy debug mode (i.e. with source maps) when including a sprockets asset into an HTML page.
+
+
+### Deprecated
+
+- `Opal::Processor.load_asset_code(sprockets, name)` has been deprecated in favor of `Opal::Sprockets.load_asset(name, sprockets)`.
+
+
+### Fixed
+
+- Fixed usage of JavaScript keywords as instance variable names for:
+    - `Kernel#instance_variable_set`
+    - `Kernel#instance_variable_get`
+    - `Kernel#instance_variables`
+- `Struct#hash` now works properly based on struct contents
+- No longer crashes when calling a method with an opt arg followed by an optional kwarg when called without the kwarg
+- Operator methods (e.g. `+`, `<`, etc.) can be handled by `method_missing`
+- Fix issue where passing a block after a parameter and a hash was causing block to not be passed (e.g. `method1 some_param, 'a' => 1, &block`)
+- Method defs issued inside `Module#instance_eval` and `Class#instance_eval`, and the respective `exec` now create class methods
+- Now with enabled arity checks calling a method with more arguments than those supported by its signature raises an `ArgumentError` as well.
+- Previously arity checks would raise an error without clearing the block for a method, that could lead to strange bugs in case the error was rescued.
+- `Regexp#===` returns false when the right hand side of the expression cannot be coereced to a string (instead of throwing a `TypeError`)
+- `Regexp#options` has been optimized and correctly returns 0 when called on a Regexp literal without any options (e.g. `//`)
+- Fix `Kernel#exit` to allow exit inside `#at_exit`
+- Fixed a number of syntax errors (e.g. #1224 #1225 #1227 #1231 #1233 #1226)
+- Fixed `Native()` when used with `Array` instances containing native objects (which weren't wrapped properly) – #1212
+- Fix `Array#to_n`, `Hash#to_n`, `Struct#to_n` when the object contains native objects ([#1249](https://github.com/opal/opal/pull/1249))
+- Internal cleanup and lots of bugs!
+
+
+
+
+## [0.8.1](https://github.com/opal/opal/compare/v0.8.0...v0.8.1) - 2015-10-12
+
+
+### Removed
+
+- Use official Sprockets processor cache keys API:
+    The old cache key hack has been removed.
+    Add `Opal::Processor.cache_key` and `Opal::Processor.reset_cache_key!` to
+    reset it as it’s cached but should change whenever `Opal::Config` changes.
+
+### Fixed
+
+- Fix an issue for which a Pathname was passed instead of a String to Sprockets.
+
+
+
+
+## [0.8.0](https://github.com/opal/opal/compare/v0.7.2...v0.8.0) - 2015-07-16
+
+
+### Added
+
+- `Hash[]` implementation fully compliant with rubyspec
+
+- Newly compliant with the Ruby Spec Suite:
+    - `Array#bsearch`
+    - `Array#combination`
+    - `Array#permutation`
+    - `Array#product`
+    - `Array#rotate!`
+    - `Array#rotate`
+    - `Array#sample`
+    - `Array#to_h`
+    - `Array#values_at`
+    - `Array#zip`
+    - `Enumerator#with_index`
+    - `Kernel#===`
+    - `Kernel#Array`
+    - `Kernel#Float`
+    - `Kernel#Hash`
+    - `Kernel#Integer`
+    - `Kernel#String`
+    - `Kernel#format`
+    - `Kernel#sprintf`
+    - `MatchData#==`
+    - `MatchData#eql?`
+    - `MatchData#values_at`
+    - `Module#instance_methods`
+    - `Regexp#match`
+    - `String#%`
+    - `String#===`
+    - `String#==`
+    - `String#[]`
+    - `String#each_line`
+    - `String#eql?`
+    - `String#index`
+    - `String#inspect`
+    - `String#lines`
+    - `String#match`
+    - `String#next`
+    - `String#oct`
+    - `String#scan`
+    - `String#slice`
+    - `String#split`
+    - `String#succ`
+    - `String#to_i`
+    - `String#try_convert`
+
+
+### Changed
+
+- Updated to Sprockets v3.0.
+- Enable operator inlining by default in the compiler.
+
+
+### Removed
+
+- Removed `minitest` from stdlib. It's not part of MRI and it never belonged there, checkout the `opal-minitest` gem instead.
+
+
+### Fixed
+
+- Delegate dependency management directly to Sprockets (when used) making sourcemaps swift again.
+    This means code generated by sprockets will always need to be bootstrapped via `Opal.load` or `Opal.require`.
+    Luckily `Opal::Processor.load_asset_code(sprockets, name)` does just that in the right way.
+- Fix `Promise#always`.
+- Fix `String#split` when no match is found and a limit is provided
+- Fix `require_tree(".")` when used from file at the root of the assets paths
+- Parser: Allow trailing comma in paren arglists, after normal args as well as assoc args.
+- Parser: Fix parsing of parens following divide operator without a space.
+- Parser: Fix bug where keyword arguments could not be parsed if method definition did not have parens around arguments.
+-  `Module#const_get` now accepts a scoped constant name
+-  `Regexp#===` sets global match data vars
+
+
+
+
+## [0.7.2](https://github.com/opal/opal/compare/v0.7.1...v0.7.2) - 2015-04-23
+
+
+- Remove Sprockets 3.0 support (focus moved to upcoming 0.8)
+- Fix version number consistency.
+
+
+
+
+## [0.7.1](https://github.com/opal/opal/compare/v0.7.0...v0.7.1) - 2015-02-13
+
+
+- CLI options `-d` and `-v` now set respectively `$DEBUG` and `$VERBOSE`
+- Fixed a bug that would make the `-v` CLI option wait for STDIN input
+- Add the `-E` / `--no-exit` CLI option to skip implicit `Kernel#exit` call
+- Now the CLI implicitly calls `Kernel#exit` at the end of the script, thus making `at_exit` blocks be respected.
+
+
+
+
+## [0.7.0](https://github.com/opal/opal/compare/v0.6.3...v0.7.0) - 2015-02-01
+
+
+- Stop keyword-arg variable names leaking to global javascript scope
+
+- `Class#native_class` now also exposes `MyClass.new` (Ruby) as `Opal.global.MyClass.new()` (JS)
+
+- Add CRuby (MRI) tests harness to start checking Opal against them too.
+
+- Add Minitest to the stdlib.
+
+- Add `Date#<=>` with specs.
+
+- Show extended info and context upon parsing, compiling and building errors.
+
+- Support keyword arguments in method calls and definitions.
+
+- Fix `begin`/`rescue` blocks to evaluate to last expression.
+
+- Add support for `RUBY_ENGINE/RUBY_PLATFORM != "opal"` pre-processor directives.
+
+        if RUBY_ENGINE != "opal"
+          # this code never compiles
+        end
+
+- Fix donating methods defined in modules. This ensures that if a class includes more than one module, then the methods defined on the class respect the order in which the modules are included.
+
+- Improved support for recursive `Hash` for both `#inspect` and `#hash`.
+
+- Optimized `Hash` implementation for `String` and `Symbol`, they have a separate hash-table in which they're used as both keys and hashes.
+
+- Added real `#hash` / `eql?` support, previously was relying on `.toString()`.
+
+- `String#to_proc` now uses `__send__` instead of `send` for calling
+    methods on receivers.
+
+- Deprecated `Opal::Sprockets::Environment`. It can easily be replaced by `Opal::Server` or by appending `Opal.paths` to a `Sprockets::Environment`:
+
+        Sprockets::Environment.new.tap { |e| Opal.paths.each {|p| e.append_path(p)} }
+
+- Add `Set` methods `#classify`, `#collect!`, `#map!`, `#subtract` `#replace`,
+    `#difference` and `#eql?`
+
+- Support `module_function` without args to toggle module functions.
+
+- Fix bug where command calls with no space and sym arg were incorrectly parsed.
+
+- Add some `StringScanner` methods.
+
+- Add `Date#<<` and `Date#>>` implementations.
+
+- Support nested directories using `require_tree` directive.
+
+- Fix bug where Exception subclasses could not have methods defined on them.
+
+- Fix symbols with interpolations `:"#{foo}"`
+
+- Implement $1..N matchers and rewrite support for $~, $', $& and $\`.
+
+- Implement `Regexp.last_match`.
+
+- Fixed `-@` unary op. precedence with a numeric and followed by a method call (e.g. `-1.foo` was parsed as `-(1.foo)`)
+
+- `require_relative` (with strings) is now preprocessed, expanded and added to `Compiler#requires`
+
+- Rewritten the require system to respect requires position (previously all the requires were stacked up at the top of the file)
+
+- Implement for-loop syntax
+
+- Add Array#|
+
+- Fix Range.new to raise `ArgumentError` on contructor values that cannot
+    be compared
+
+- Fix compiler bug where Contiguous strings were not getting concatenated.
+
+- Cleanup generated code for constant access. All constant lookups now go through `$scope.get('CONST_NAME')` to produce cleaner code and a unified place for const missing dispatch.
+
+- Remove `const_missing` option from compiler. All constant lookups are now strict.
+
+- Add initial support for Module#autoload.
+
+- Fix `Enumerator#with_index`, `Numeric#round`.
+
+
+
+
+## [0.6.3](https://github.com/opal/opal/compare/v0.6.2...v0.6.3) - 2014-11-23
+
+
+- Fix `Regexp.escape` internal regexp
+
+
+
+
+## [0.6.2](https://github.com/opal/opal/compare/v0.6.1...v0.6.2) - 2014-04-24
+
+
+- Added Range#size
+
+- `opal` executable now reads STDIN when no file or `-e` are passed
+
+- `opal` executable doesn't exit after showing version on `-v` if other options are passed
+
+- (Internal) improved the mspec runner
+
+
+
+
+## [0.6.1](https://github.com/opal/opal/compare/v0.6.0...v0.6.1) - 2014-04-14
+
+
+- Updated RubySpec to master and added `rubysl-*` specs. Thanks to Mike Owens (@mieko)
+
+- Added `Kernel#require_remote(url)` in `opal-parser` that requires files with basic synchronous ajax
+    GET requests. It is used to load `<scripts type="text/ruby" src="…url…">`.
+
+- Various parsing fixes (Hash parsing, `def` returns method name, cleanup `core/util`, Enumerator fixes)
+
+- Added `#native_reader`, `#native_writer` and `#native_accessor`as class methods
+    donated by `include Native`
+
+- Added specs for Sprockets' processors (both .js.rb and .opalerb), backported from `opal-rails`
+
+- Set 2.1.1 as RUBY_VERSION
+
+- Add `opal-build` command utility to easily build libraries to js
+
+- Add `opal-repl` to gemspec executables,
+    previously was only available by using Opal from source
+
+- Fix parsing `=>` in hash literals where it would sometimes incorrectly
+    parse as a key name.
+
+
+
+
+## [0.6.0](https://github.com/opal/opal/compare/v0.5.5...v0.6.0) - 2014-03-05
+
+
+- Fix parsing of escapes in single-strings ('foo\n'). Only ' and \
+    characters now get escaped in single quoted strings. Also, more escape
+    sequences in double-quoted strings are now supported: `\a`, `\v`, `\f`,
+    `\e`, `\s`, octal (`\314`), hex (`\xff`) and unicode (`\u1234`).
+
+- Sourcemaps revamp. Lexer now tracks column and line info for every token to
+    produce much more accurate sourcemaps. All method calls are now located on
+    the correct source line, and multi-line xstrings are now split to generate
+    a map line-to-line for long inline javascript parts.
+
+- Merged sprockets support from `opal-sprockets` directly into Opal. For the
+    next release, the exernal `opal-sprockets` gem is no longer needed. This
+    commit adds `Opal::Processor`, `Opal::Server` and `Opal::Environment`.
+
+- Introduce pre-processed if directives to hide code from Opal. Two special
+    constant checks now take place in the compiler. Either `RUBY_ENGINE` or
+    `RUBY_PLATFORM` when `== "opal"`. Both if and unless statements can pick
+    up these logic checks:
+
+        if RUBY_ENGINE == "opal"
+          # this code compiles
+        else
+          # this code never compiles
+        end
+
+    Unless:
+
+        unless RUBY_ENGINE == "opal"
+          # this code never compiles
+        end
+
+    This is particularly useful for avoiding `require()` statements being
+    picked up, which are included at compile time.
+
+- Add special `debugger` method to compiler. Compiles down to javascript
+    `debugger` keyword to start in-browser debug console.
+
+- Add missing string escapes to `read_escape` in lexer. Now most ruby escape
+    sequences are properly detected and handled in string parsing.
+
+- Disable escapes inside x-strings. This means no more double escaping all
+    characters in x-strings and backticks. (`\n` => `\n`).
+
+- Add `time.rb` to stdlib and moved `Time.parse()` and `Time.iso8601()`
+    methods there.
+
+- `!` is now treated as an unary method call on the object. Opal now parsed
+    `!` as a def method name, and implements the method on `BasicObject`,
+    `NilClass` and `Boolean`.
+
+- Fixed bug where true/false as object literals from javascript were not
+    correctly being detected as truthy/falsy respectively. This is due to the
+    javascript "feature" where `new Boolean(false) !== false`.
+
+- Moved `native.rb` to stdlib. Native support must now be explicitly required
+    into Opal. `Native` is also now a module, instead of a top level class.
+    Also added `Native::Object#respond_to?`.
+
+- Remove all core `#as_json()` methods from `json.rb`. Added them externally
+    to `opal-activesupport`.
+
+- `Kernel#respond_to?` now calls `#respond_to_missing?` for compliance.
+
+- Fix various `String` methods and add relevant rubyspecs for them. `#chars`,
+    `#to_f`, `#clone`, `#split`.
+
+- Fix `Array` method compliance: `#first`, `#fetch`, `#insert`, `#delete_at`,
+    `#last`, `#splice`, `.try_convert`.
+
+- Fix compliance of `Kernel#extend` and ensure it calls `#extended()` hook.
+
+- Fix bug where sometimes the wrong regexp flags would be generated in the
+    output javascript.
+
+- Support parsing `__END__` constructs in ruby code, inside the lexer. The
+    content is gathered up by use of the parser. The special constant `DATA`
+    is then available inside the ruby code to read the content.
+
+- Support single character strings (using ? prefix) with escaped characters.
+
+- Fix lexer to detect dereferencing on local variables even when whitespace
+    is present (`a = 0; a [0]` parses as a deference on a).
+
+- Fix various `Struct` methods. Fixed `#each` and `#each_pair` to return
+    self. Add `Struct.[]` as synonym for `Struct.new`.
+
+- Implemented some `Enumerable` methods: `#collect_concat`, `#flat_map`,
+    `#reject`, `#reverse_each`, `#partition` and `#zip`.
+
+- Support any Tilt template for `index_path` in `Opal::Server`. All index
+    files are now run through `Tilt` (now supports haml etc).
+
+- Fix code generation of `op_asgn_1` calls (`foo[val] += 10`).
+
+- Add `base64` to stdlib.
+
+- Add promises implementation to stdlib.
+
+- Add `Math` module to corelib.
+
+- Use `//#` instead of `//@` deprecated syntax for sourceMappingURL.
+
+- Implicitly require `erb` from stdlib when including erb templates.
+
+- Fix `Regexp.escape` to also escape '(' character.
+
+- Support '<' and '>' as matching pairs in string boundrys `%q<hi>`.
+
+- `Opal::Server` no longer searches for an index file if not specified.
+
+- Move `Math` and `Encoding` to stdlib. Can be required using
+    `require 'math'`, etc.
+
+- Fix some stdlib `Date` methods.
+
+- Fix `Regexp.escape` to properly escape \n, \t, \r, \f characters.
+
+- Add `Regexp.quote` as an alias of `escape`.
+
+
+
+
+## [0.5.5](https://github.com/opal/opal/compare/v0.5.4...v0.5.5) - 2013-11-25
+
+
+- Fix regression: add `%i[foo bar]` style words back to lexer
+
+- Move corelib from `opal/core` to `opal/corelib`. This stops files in `core/` clashing with user files.
+
+
+
+
+## [0.5.4](https://github.com/opal/opal/compare/v0.5.3...v0.5.4) - 2013-11-20
+
+
+- Reverted `RUBY_VERSION` to `1.9.3`. Opal `0.6.0` will be the first release for `2.0.0`.
+
+
+
+
+## [0.5.3](https://github.com/opal/opal/compare/v0.5.2...v0.5.3) - 2013-11-20
+
+
+- Opal now targets ruby 2.0.0
+
+- Named function inside class body now generates with `$` prefix, e.g. `$MyClass`. This makes it easier to wrap/bridge native functions.
+
+- Support Array subclasses
+
+- Various fixes to `String`, `Kernel` and other core classes
+
+- Fix `Method#call` to use correct receiver
+
+- Fix `Module#define_method` to call `#to_proc` on explicit argument
+
+- Fix `super()` dispatches on class methods
+
+- Support `yield()` calls from inside a block (inside a method)
+
+- Cleanup string parsing inside lexer
+
+- Cleanup parser/lexer to use `t` and `k` prefixes for all tokens
+
+
+
+
+## [0.5.2](https://github.com/opal/opal/compare/v0.5.1...v0.5.2) - 2013-11-11
+
+
+- Include native into corelib for 0.5.x
+
+
+
+
+## [0.5.1](https://github.com/opal/opal/compare/v0.5.0...v0.5.1) - 2013-11-10
+
+
+- Move all corelib under `core/` directory to prevent filename clashes with `require`
+
+- Move `native.rb` into stdlib - must now be explicitly required
+
+- Implement `BasicObject#__id__`
+
+- Cleanup and fix various `Enumerable` methods
+
+
+
+
+## [0.5.0](https://github.com/opal/opal/compare/v0.4.4...v0.5.0) - 2013-11-03
+
+
+- Optimized_operators is no longer a compiler option
+- Replace `Opal.bridge_class()` with <code>class Foo < \`bar\`</code> syntax
+- Expose `Opal.bridge_class()` for bridging native prototypes
+- Source maps improvements
+- Massive Rubyspec cleanup + passing specs
+- Massive Corelib/Stdlib cleanup + fixes
+- Massive internal cleanup + fixes
+
+*See the [full diff](https://github.com/opal/opal/compare/v0.4.4...v0.5.0) for more details (almost 800 commits)*
+
+
+
+
+## [0.4.4](https://github.com/opal/opal/compare/v0.4.3...v0.4.4) - 2013-08-13
+
+
+- Remove native object method calls
+- Add Struct class
+- Add method stubs as method_missing option, stubs enabled by default
+- Native is now used to wrap native objects directly
+- Fix Hash.new and Hash.allocate for subclasses
+- Generate sourcemaps from fragments
+- Allow blocks to be passed to zsuper (no args) calls
+- Fix yield when given 1 or multiple arguments for block destructuring
+
+
+
+
+## [0.4.3](https://github.com/opal/opal/compare/v0.4.2...v0.4.3) - 2013-07-24
+
+
+- Re-implement class system. Classes are now real objects instead of converted Procs. This allows classes to properly inherit methods from each other.
+- Fix exception hierarchy. Not all standard exception classes were subclassing the correct parent classes, this is now fixed.
+- Move ERB into stdlib. The erb compiler/parser has also been moved into lib/
+- Opal::Builder class. A simple port/clone of sprockets general building. This allows us to build projects similar to the way opal-sprockets does.
+- Move json.rb to stdlib.
+
+
+
+
+## [0.4.2](https://github.com/opal/opal/compare/v0.4.1...v0.4.2) - 2013-07-03
+
+
+- Added `Kernel#rand`. (fntzr)
+
+- Restored the `bin/opal` executable in gemspec.
+
+- Now `.valueOf()` is used in `#to_n` of Boolean, Numeric, Regexp and String
+    to return the naked JavaScript value instead of a wrapping object.
+
+- Parser now wraps or-ops in paranthesis to stop variable order from
+    leaking out when minified by uglify. We now have code in this
+    format: `(((tmp = lhs) !== false || !==nil) ? tmp : rhs)`.
+
+
+
+
+## [0.4.1](https://github.com/opal/opal/compare/v0.4.0...v0.4.1) - 2013-06-16
+
+
+- Move sprockets logic out to external opal-sprockets gem. That now
+    handles the compiling and loading of opal files in sprockets.
+
+
+
+
+## [0.4.0](https://github.com/opal/opal/compare/v0.3.44...v0.4.0) - 2013-06-15
+
+
+- Added fragments to parser. All parser methods now generate one or
+    more Fragments which store the original sexp. This allows us to
+    enumerate over them after parsing to map generated lines back to
+    original line numbers.
+
+- Reverted `null` for `nil`. Too buggy at this time.
+
+- Add Opal::SprocketsParser as Parser subclass for handling parsing
+    for sprockets environment. This subclass handles require statements
+    and stores them for sprockets to use.
+
+- Add :irb option to parser to keep top level lvars stored inside
+    opal runtime so that an irb session can be persisted and maintain
+    access to local variables.
+
+- Add Opal::Environment#use_gem() helper to add a gem to opals load
+    path.
+
+- Stop pre-setting ivars to `nil`. This is no longer needed as `nil`
+    is now `null` or `undefined`.
+
+- Use `null` as `nil` in opal. This allows us to send methods to
+    `null` and `undefined`, and both act as `nil`. This makes opal a
+    much better javascript citizen. **REVERTED**
+
+- Add Enumerable#none? with specs.
+
+- Add Opal.block_send() runtime helper for sending methods to an
+    object which uses a block.
+
+- Remove \_klass variable for denoting ruby classes, and use
+    constructor instead. constructor is a javascript property used for
+    the same purpose, and this makes opal fit in as a better js citizen.
+
+- Add Class.bridge\_class method to bridge a native constructor into an
+    opal class which will set it up with all methods from Object, as
+    well as giving it a scope and name.
+
+- Added native #[]= and #to_h methods, for setting properties and
+    converting to a hash respectivaly.
+
+- Fix bug where '::' was parsed as :colon2 instead of :colon3 when in
+    an args scope. Fixes #213
+
+- Remove lots of properties added to opal classes. This makes normal
+    js constructors a lot closer to opal classes, making is easier to
+    treat js classes as opal classes.
+
+- Merge Hash.from_native into Hash.new
+
+
+
+
+## [0.3.44](https://github.com/opal/opal/compare/v0.3.43...v0.3.44) - 2013-05-31
+
+
+- Cleanup runtime, and remove various flags and functions from opal
+    objects and classes (moving them to runtime methods).
+
+- Remove some activesupport methods into external lib.
+
+- Add/fix lots of String methods, with specs.
+
+- Add more methods to MatchData class.
+
+- Implement $' and $` variables.
+
+- Opal can now call methods on all native objects, via method missing
+    dispatcher.
+
+- Add Opal::Environment as custom sprockets subclass which adds all
+    opal load paths automatically.
+
+
+
+
+## [0.3.43](https://github.com/opal/opal/compare/v0.3.42...v0.3.43) - 2013-05-02
+
+
+- Stop inlining respond_to? inside the parser. This now fully respects
+    an object overriding respond_to?.
+
+- Expose `Opal.eval()` function when parser is loaded for parsing
+    and running strings of ruby code.
+
+- Add erb to corelib (as well as compiler to gem lib). ERB files with
+    .opalerb extension will automatically be compiled into Template
+    constant.
+
+- Added some examples into examples/ dir.
+
+- Add Opal.send() javascript function for sending methods to ruby
+    objects.
+
+- Native class for wrapping and interacting with native objects and
+    function calls.
+
+- Add local_storage to stdlib as a basic wrapper around localStorage.
+
+- Make method_missing more performant by reusing same dispatch function
+    instead of reallocating one for each run.
+
+- Fix Kernel#format to work in firefox. String.prototype.replace() had
+    different semantics for empty matching groups which was breaking
+    Kernel#format.
+
+
+
+
+## [0.3.42](https://github.com/opal/opal/compare/v0.3.41...v0.3.42) - 2013-03-21
+
+
+- Fix/add lots of language specs.
+
+- Seperate sprockets support out to opal-sprockets gem.
+
+- Support %r[foo] style regexps.
+
+- Use mspec to run specs on corelib and runtime. Rubyspecs are now
+    used, where possible to be as compliant as possible.
+
+
+
+
+## [0.3.41](https://github.com/opal/opal/compare/v0.3.40...v0.3.41) - 2013-02-26
+
+
+- Remove bin/opal - no longer required for building sources.
+
+- Depreceate Opal::Environment. The Opal::Server class provides a better
+    method of using the opal load paths. Opal.paths still stores a list of
+    load paths for generic sprockets based apps to use.
+
+
+
+
+## [0.3.40](https://github.com/opal/opal/compare/v0.3.39...v0.3.40) - 2013-02-23
+
+
+- Add Opal::Server as an easy to configure rack server for testing and
+    running Opal based apps.
+
+- Added optional arity check mode for parser. When turned on, every method
+    will have code which checks the argument arity. Off by default.
+
+- Exception subclasses now relfect their name in webkit/firefox debuggers
+    to show both their class name and message.
+
+- Add Class#const_set. Trying to access undefined constants by a literal
+    constant will now also raise a NameError.
+
+
+
+
+## [0.3.39](https://github.com/opal/opal/compare/v0.3.38...v0.3.39) - 2013-02-20
+
+
+- Fix bug where methods defined on a parent class after subclass was defined
+    would not given subclass access to method. Subclasses are now also tracked
+    by superclass, by a private '_inherited' property.
+
+- Fix bug where classes defined by `Class.new` did not have a constant scope.
+
+- Move Date out of opal.rb loading, as it is part of stdlib not corelib.
+
+- Fix for defining methods inside metaclass, or singleton_class scopes.
+
+
+
+
+## [0.3.38](https://github.com/opal/opal/compare/v0.3.37...v0.3.38) - 2013-02-19
+
+
+- Add Native module used for wrapping objects to forward calls as native calls.
+
+- Support method_missing for all objects. Feature can be enabled/disabled on `Opal::Processor`.
+
+- Hash can now use any ruby object as a key.
+
+- Move to Sprockets based building via `Opal::Processor`.
+
+
+
+
+## [0.3.37](https://github.com/opal/opal/compare/v0.3.36...v0.3.37) - 2013-02-15
+
+
+- Extract the JavaScript runtime to `opal/runtime.js`
+- Add core `template.rb` for the basis of template libraries for Opal
+
+
+
+
+## [0.3.36](https://github.com/opal/opal/compare/v0.3.35...v0.3.36) - 2013-02-08
+
+
+- Use Ruby `require` directive inside Sprockets
+- Depreceate `Opal.process` in favour of `Opal::Environment`
+
+
+
+
+## [0.3.35](https://github.com/opal/opal/compare/v0.3.34...v0.3.35) - 2013-02-05
+
+
+- Internal cleanup
+
+
+
+
+## [0.3.34](https://github.com/opal/opal/compare/v0.3.33...v0.3.34) - 2013-02-05
+
+
+- Fix bug where camelcased lvars could parse as constants
+- Add `Array#shuffle`
+- Migrate to Sprockets-based building
+- Move ERB to separate gem
+
+
+
+
+## [0.3.33](https://github.com/opal/opal/compare/000000...v0.3.33) - 2013-01-18
+
+
+- Implement attr_reader/writer/accessor for dynamic uses
+- Hash internals update
+
+
+
+
diff --git a/CONDUCT.md b/CONDUCT.md
new file mode 100644
index 00000000..e7b4d5f0
--- /dev/null
+++ b/CONDUCT.md
@@ -0,0 +1,13 @@
+This document provides community guidelines for a safe, respectful, productive,
+and collaborative place for any person who is willing to contribute to the Opal
+community. It applies to all “collaborative space”, which is defined as
+community communications channels (such as mailing lists, submitted patches,
+commit comments, etc.).
+
+* Participants will be tolerant of opposing views.
+* Participants must ensure that their language and actions are free of personal
+  attacks and disparaging personal remarks.
+* When interpreting the words and actions of others, participants should always
+  assume good intentions.
+* Behaviour which can be reasonably considered harassment will not be
+  tolerated.
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
new file mode 100644
index 00000000..2f70d721
--- /dev/null
+++ b/CONTRIBUTING.md
@@ -0,0 +1,45 @@
+# Contributing and Reporting
+
+This is the issue tracker for Opal. If you have a more general question about
+using Opal (or related libraries) then use the [stackoverflow tag (#opalrb)][SO], or the *Gitter* chatroom at [opal/opal][gitter]
+(also available as IRC at `irc.gitter.im`).
+
+[SO]: http://stackoverflow.com/questions/ask?tags=opalrb
+[gitter]: https://gitter.im/opal/opal
+
+What follows is a quick checklist you can before sending issues or pull-requests, for in-depth instructions on how to hack the internals of Opal and setup the development environment please see [`HACKING.md`][hacking].
+
+[hacking]: https://github.com/opal/opal/blob/master/HACKING.md
+
+## Submitting a New Issue
+
+1.  Before opening a new issue, search for previous discussions including closed
+    ones. Add comments there if a similar issue is found.
+
+2.  Please report the version on which the issue is found (`opal -v`).
+
+3.  The best issues have steps to reproduce the error. Common ways to do that are:
+    - A snippet of Ruby code
+    - A CLI command with its output, e.g. `opal -ve 'p String != Symbol' # => false'`
+
+
+## Submitting a Pull Request
+
+1.  Before sending pull requests make sure all tests run and pass (see `HACKING.md` in this repo).
+
+2.  Make sure to use a similar coding style to the rest of the code base. Some examples follow:
+    - In Ruby and JavaScript code we use 2 spaces (no tabs)
+    - In JavaScript we use `snake_case` for methods and variables
+
+3.  Make sure to have updated all the relevant documentation, both for API (using _yardoc_ syntax) and the Guides
+
+4.  Add a Changelog entry at the top of `UNRELEASED.md`
+
+
+### A note on commits in PRs
+
+You could be asked to squash your commits during a PR review. That doesn't mean there's a preference for a single commit for each PR, rather it's a request to have each commit focused on a specific group changes and avoid the sequence of changes, fixups and reverts that tell an interesting story but in the end make the use of `git blame` quite difficult.
+
+__That said, these are quite loose requirements in the spirit of keeping contributing enjoyable 🤓__
+
+
diff --git a/Gemfile b/Gemfile
new file mode 100644
index 00000000..21865fae
--- /dev/null
+++ b/Gemfile
@@ -0,0 +1,50 @@
+source 'https://rubygems.org'
+gemspec
+
+v = -> version { Gem::Version.new(version) if version }
+
+ruby_version      = v[RUBY_VERSION]
+
+tilt_version      = ENV['TILT_VERSION']
+rack_version      = ENV['RACK_VERSION']
+sprockets_version = ENV['SPROCKETS_VERSION']
+
+gem 'json', '< 1.8.1',  platform: :ruby if ruby_version < v['2.2']
+gem 'rack-test', '< 0.8' if ruby_version <= v['2.0']
+gem 'coveralls', platform: :mri
+
+# Some browsers have problems with WEBrick
+gem 'puma' unless RUBY_ENGINE == 'truffleruby'
+
+gem 'rack', rack_version if rack_version
+gem 'tilt', tilt_version if tilt_version
+gem 'sprockets', sprockets_version if sprockets_version
+
+group :repl do
+  if RUBY_VERSION.to_f >= 2.3
+    gem 'mini_racer', platform: :mri, require: false
+  else
+    gem 'mini_racer', '< 0.2.0', platform: :mri, require: false
+    gem 'libv8', '~> 6.3.0', platform: :mri, require: false
+  end
+
+  gem 'therubyrhino', platform: :jruby, require: false
+end
+
+group :browser do
+  gem 'selenium-webdriver', '>= 3.0.0.beta3.1', platform: :mri
+end
+
+group :development do
+  gem 'rb-fsevent'
+  gem 'guard', require: false
+
+  if RUBY_PLATFORM =~ /darwin/
+    gem 'terminal-notifier-guard'
+    gem 'terminal-notifier'
+  end
+end unless ENV['CI']
+
+group :doc do
+  gem 'redcarpet' unless RUBY_ENGINE == 'truffleruby'
+end unless ENV['CI']
diff --git a/Guardfile b/Guardfile
new file mode 100644
index 00000000..82258c15
--- /dev/null
+++ b/Guardfile
@@ -0,0 +1,76 @@
+require 'guard/plugin'
+
+class ::Guard::Opal < Plugin
+  def mspec *paths
+    command = ['bundle', 'exec', './bin/opal-mspec', *paths.flatten]
+    result = time(:mspec, *paths) { system *command }
+    notify 'MSpec', result
+  end
+
+  def rspec *paths
+    command = ['bundle', 'exec', 'rspec', *paths.flatten]
+    result = time(:rspec, *paths) { system *command }
+    notify 'RSpec', result
+  end
+
+  def notify lib, result
+    if result
+      ::Guard::Notifier.notify(
+        'Success ♥︎', title: "#{lib} results", image: :success, priority: 1
+      )
+    else
+      ::Guard::Notifier.notify(
+        'Failed ♠︎', title: "#{lib} results", image: :failed, priority: 1
+      )
+    end
+  end
+
+  def color *args
+    Guard::UI.send :color, *args
+  end
+
+  def terminal_columns
+    cols = `tput cols 2> /dev/tty`.strip.to_i
+    ($?.success? && cols.nonzero?) ? cols : 80
+  end
+
+  def time *titles
+    columns = terminal_columns
+    puts color("=== running: #{titles.join(' ')} ".ljust(columns,'='), :cyan)
+    s = Time.now
+    result = yield
+    t = (Time.now - s).to_f
+    puts color("=== time: #{t} seconds ".ljust(columns, '='), :cyan)
+    result
+  end
+
+  def run_on_changes(changes)
+    m = changes
+    path = m[0]
+    puts color("Searching specs for #{m[0]}...", :yellow)
+    case path
+    when %r{^spec/lib}     then rspec path
+    when %r{^spec/ruby} then mspec path
+    when %r{^opal/corelib}
+      name = File.basename(path, '.rb')
+      mspec "spec/ruby/core/#{name}/**/*_spec.rb"
+    when %r{^lib/opal/(.*)\.rb$}
+      name = $1
+      specs = Dir["spec/lib/#{name}_spec.rb"]
+      rspec *specs
+    end
+  end
+
+  def run_all
+    time(:all) { system 'bundle', 'exec', 'rake' }
+  end
+end
+
+guard :opal do
+  ignore %r{^(tmp|tasks|pkg|cdn|build|node_modules|grammar.rb)}
+  watch %r{^spec/.*}
+  watch %r{^lib/.*}
+  watch %r{^bin/.*}
+  watch %r{^opal/.*}
+  watch %r{^stdlib/.*}
+end
diff --git a/HACKING.md b/HACKING.md
new file mode 100644
index 00000000..9633ba31
--- /dev/null
+++ b/HACKING.md
@@ -0,0 +1,191 @@
+# Hacking
+
+## Quick Start
+
+[Fork opal/opal on GitHub](https://github.com/opal/opal/fork), then clone the fork to your machine:
+
+```
+$ git clone git://github.com/<YOUR-GITHUB-USERNAME>/opal.git
+```
+
+Setup the project:
+
+```
+$ bin/setup
+```
+
+Run the test suite:
+
+```
+$ bundle exec rake
+```
+
+You are now ready to make your first contribution to Opal! At a high level, your workflow will be to:
+
+1. Make changes to Opal source code
+2. Run the test suite to make sure it still passes
+3. Submit a pull request
+
+
+## Down The Rabbit Hole
+
+Before making changes to Opal source, you need to understand a little about how the test suite works. Every spec that Opal test suite executes is listed in `spec/ruby_specs` file. Each line in that file is a path to either a spec file or a directory full of spec files. If it's a path to a directory, all spec files in that directory will be executed when you run the test suite. Lines starting with a `!` represent files that are excluded (i.e. "execute all files in a given directory, *except* this file"), and lines starting with a `#` are ignored as comments. All paths are relative to the top-level `specs` directory. Let's follow one of these paths - `ruby/core/string/sub_spec` - and see where it goes.
+
+Navigating to `spec/ruby/core` directory, you see that it contains multiple sub-directories, usually named after the Ruby class or module. Drilling further down into `spec/ruby/core/string` you see all the spec files for the various `String` behaviors under test, usually named by a method name followed by `_spec.rb`. Opening `spec/ruby/core/string/sub_spec.rb` you finally see the code that checks the correctness of Opal's implementation of the `String#sub` method's behavior.
+
+When you execute `$ bundle exec rake`, the code in this file is executed, along with all the other specs in the entire test suite. It's a good idea to run the entire test suite when you feel you reached a certain milestone in the course of making your changes (exactly what that means is up to you), and definitely do `$ bundle exec rake` before committing your changes to make sure they have not introduced regressions or other unintended side effects.
+
+But you will want to run tests as often as possible, after every small change, and running the entire test suite will slow you down. You need to be able to execute a single spec that is concerned with the feature you are currently working on. To accomplish this, just add `PATTERN` to your spec invocation command, like this:
+
+```
+$ bundle exec rake mspec_ruby_nodejs PATTERN=spec/ruby/core/string/sub_spec.rb
+```
+
+This will make sure that only `spec/ruby/core/string/sub_spec.rb` is run, and no other specs are executed. Globs can be used too:
+
+```
+$ bundle exec rake mspec_ruby_nodejs PATTERN="spec/ruby/core/string/*_spec.rb"
+```
+
+Another way to quickly validate ideas and play with your changes is to use `opal-repl`, a tool similar to `irb`. Running `opal-repl` drops you into an interactive environment with your current version of Opal loaded, including any changes you have made.
+
+```
+$ bundle exec opal-repl
+>> 2 + 2
+=> 4
+>>
+```
+
+When quickly iterating on an idea, even `opal-repl` may feel a bit too heavy, because after making a change in Opal, you must `exit` from `opal-repl` and do `$ bundle exec opal-repl` again to load Opal with your latest changes. In this case, you can run `opal` with the `-e` option, which executes a piece of code you pass to it once, then returns to the shell. This means that in order to run it again after making another adjustment to Opal, all you have to do is hit the up arrow key on your keyboard and press the enter key. This is the fastest way to go from making a change in Opal to seeing its effect.
+
+```
+$ bundle exec opal -e "3.times {puts 'hello'}"
+hello
+hello
+hello
+$
+```
+
+Let's recap what we covered so far. `spec/ruby_specs` is the "master list" of all the specs that get executed when you do `$ bundle exec rake`. You know where to find individual specs, inspect them, and execute them selectively or in bulk. But how do you know which specs to work on? You may be tempted to compare the contents of one of the directories in `spec/ruby/core` with the list of paths in `spec/ruby_specs`, add the missing paths to the "master list", run `$ bundle exec rake`, and start fixing the failures by implementing the missing features. However, chances are that as you are reading this, there are plenty of failing tests in the specs that are already listed in `spec/ruby_specs`. How can that be if `$ bundle exec rake` runs green? To understand this, you need to get acquainted with the concept of spec filters.
+
+There are two types of spec filters in the Opal project: `spec/filters/bugs` and `spec/filters/unsupported`. Both filters have the same effect: any spec failures that are noted inside any of the files inside of these directories are ignored when running the spec suite, i.e. they are not reported as failures. Even though their effect is the same, the purpose of `bugs` and `unsupported` filters is different. As the name suggests, `unsupported` filters list _permanent_ failures, things that other Ruby implementations can do that Opal cannot and will never be able to do (by design and by virtue of being implemented on top of JavaScript running in the browser environment). `bugs` filters, on the other hand, are _temporary_ failures, problems that need to be worked on. Problems that Opal needs your help with. Think of the `bugs` directory and the files contained within it as your "TO DO" list for contributing to Opal.
+
+Comment out any of the `fail` lines in any of the files in the `spec/filters/bugs` directory, run `$bundle exec rake`, and watch it fail. Make it pass and submit a pull request - that's all there is to it :) Happy hacking!
+
+Core classes use each other and your changes may fix other bugs in `spec/filters/bugs`. If you think it's possible, run an inverted test suite by providing environment variable `INVERT_RUNNING_MODE=true`:
+
+```
+$ env INVERT_RUNNING_MODE=true RUBYSPECS=true PATTERN="spec/ruby/core/string/*_spec.rb" rake mspec_ruby_nodejs
+```
+
+This command will execute tests marked as "bugs" from every file in the `spec/ruby/core/string` directory. After running it you will get a list of specs that in fact are passing. Feel free to remove them from `spec/filters/bugs`.
+
+Note: Opal has some bugs that may cause a shared state between tests. Sometimes green specs are green only in the inverted test suite, so after removing them from `/bugs`, run a regular test suite one more time to verify that everything is fine.
+
+Also there are some specs in `spec/ruby/language/while_spec.rb` that cause an infinite loop. Make sure to comment them before running a whole inverted test suite.
+
+## Benchmarking
+
+There are two ways to benchmark Opal's performance: one way is to write a program (or a set of programs) that takes sufficently long time to execute, then measure the execution time, and the other is to execute a specific Ruby Spec Suite example (or a set of examples) multiple times, then measure the execution time. Let's call the former "Traditional Benchmarking", and the latter "The Ruby Spec Suite Benchmarking".
+
+Regardless of which of the two types of benchmarking above you happen to be doing, the reporting of benchmark results works the same way: `bundle exec rake bench:report`.
+
+It's important to understand that benchmarking in Opal works on the principle of a single, shared benchmarking workspace, a *bench*, where the results of each benchmark run that you perform get automatically saved. When you do `bundle exec rake bench:report`, you get a combined report of all of the benchmark results that are currently sitting in your workspace. This means you can check out an older commit, run benchmarks, checkout a newer commit, run benchmarks, then run the report to see the results from the two commits side-by-side. After you're done, (or before starting a new benchmarking session), you can do `bundle exec rake bench:clear` to reset your workspace to a clean slate.
+
+You can get a list of all the available benchmarking commands by running `bundle exec rake -T | grep bench` as shown below.
+
+```
+$ bundle exec rake -T | grep bench
+
+rake bench:clear            # Delete all benchmark results
+rake bench:opal             # Benchmark Opal
+rake bench:report           # Combined report of all benchmark results
+rake bench:ruby             # Benchmark Ruby
+```
+
+### Traditional Benchmarking
+
+At the root of the opal project tree is a folder called `benchmark` that contains a file called `benchmarks`. This file lists all of the benchmarks that will be run if you do `bundle exec bench:opal` without specifying any particular benchmark file(s) as parameters to this rake task. In the example below, I pick which benchmarks to run by passing their file paths as parameters to the rake task.
+
+Start with a clean slate:
+
+```
+$ bundle exec rake bench:clear
+
+rm tmp/bench/*
+```
+
+Run two benchmark programs from the MRI benchmarking suite by passing their file paths as parameters:
+(Note: passing params to Rake tasks is tricky - notice there is no space after the comma!)
+
+```
+$ bundle exec rake bench:opal[test/cruby/benchmark/bm_app_answer.rb,test/cruby/benchmark/bm_app_factorial.rb]
+
+bundle exec opal benchmark/run.rb test/cruby/benchmark/bm_app_answer.rb test/cruby/benchmark/bm_app_factorial.rb | tee tmp/bench/Opal1
+test/cruby/benchmark/bm_app_answer.rb    0.7710001468658447
+test/cruby/benchmark/bm_app_factorial.rb 0.0820000171661377
+===============================================
+Executed 2 benchmarks in 0.8530001640319824 sec
+```
+
+In this case, I want to see how Opal's results stack up against MRI's results, so I will run the same set of benchmarks for Ruby:
+
+```
+$ bundle exec rake bench:ruby[test/cruby/benchmark/bm_app_answer.rb,test/cruby/benchmark/bm_app_factorial.rb]
+
+bundle exec ruby benchmark/run.rb test/cruby/benchmark/bm_app_answer.rb test/cruby/benchmark/bm_app_factorial.rb | tee tmp/bench/Ruby1
+test/cruby/benchmark/bm_app_answer.rb    0.04913724200014258
+test/cruby/benchmark/bm_app_factorial.rb 1.3288652799965348
+===============================================
+Executed 2 benchmarks in 1.3780025219966774 sec
+```
+
+Now I'm ready to see the result of the two runs side-by-side:
+
+```
+$ bundle exec rake bench:report
+
+Benchmark                                 Opal1  Ruby1
+test/cruby/benchmark/bm_app_answer.rb     0.771  0.049
+test/cruby/benchmark/bm_app_factorial.rb  0.082  1.329
+```
+
+If I were to continue running benchmarks, more columns would be added to the report. You can select which columns you want to display (and in what order) by passing their names as params to the rake task like so: `bundle exec rake bench:report[Ruby1,Opal1]`
+
+### The Ruby Spec Suite Benchmarking
+
+This type of benchmarking relies on a feature of MSpec whereby you can ask it to execute every example in a given spec multiple times. Adding `BM=<number of times>` to your regular spec suite invocation command will hook into this MSpec functionality, collect timing information, and dump the results into the benchmarking workspace, making them available for reporting. Below is an example run with a single spec and `BM` set to `100`, meaning each example in the spec would be run 100 times.
+
+```
+$ bundle exec rake mspec_ruby_nodejs PATTERN=spec/ruby/core/array/permutation_spec.rb BM=100
+
+...
+
+Benchmark results have been written to tmp/bench/Spec1
+To view the results, run bundle exec rake bench:report
+```
+
+Now let's see the report:
+(Spec names can be very long, scroll to the right to see the numbers)
+
+```
+$ bundle exec rake bench:report
+Benchmark                                                                                                                     Spec1
+Array#permutation_returns_an_Enumerator_of_all_permutations_when_called_without_a_block_or_arguments                          0.117
+Array#permutation_returns_an_Enumerator_of_permutations_of_given_length_when_called_with_an_argument_but_no_block             0.064
+Array#permutation_yields_all_permutations_to_the_block_then_returns_self_when_called_with_block_but_no_arguments              0.076
+Array#permutation_yields_all_permutations_of_given_length_to_the_block_then_returns_self_when_called_with_block_and_argument  0.072
+Array#permutation_returns_the_empty_permutation_([[]])_when_the_given_length_is_0                                             0.029
+Array#permutation_returns_the_empty_permutation([])_when_called_on_an_empty_Array                                             0.029
+Array#permutation_returns_no_permutations_when_the_given_length_has_no_permutations                                           0.029
+Array#permutation_handles_duplicate_elements_correctly                                                                        0.081
+Array#permutation_handles_nested_Arrays_correctly                                                                             0.085
+Array#permutation_truncates_Float_arguments                                                                                   0.063
+Array#permutation_returns_an_Enumerator_which_works_as_expected_even_when_the_array_was_modified                              0.056
+Array#permutation_generates_from_a_defensive_copy,_ignoring_mutations                                                         0.038
+```
+
+
+## Parser
+
+Opal relies on the `parser` gem, see debug/development documentation there to know more about its internals: https://whitequark.github.io/parser/.
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 00000000..3d615c89
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,19 @@
+Copyright (C) 2013-2021 by Adam Beynon and the Opal contributors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/README.md b/README.md
index bb94e3c6..6f261f94 100644
--- a/README.md
+++ b/README.md
@@ -1,85 +1,279 @@
-# Opal CDN distribution
+<h1 align="center">
+  <img src="https://secure.gravatar.com/avatar/88298620949a6534d403da2e356c9339?s=420"
+  align="center" title="Opal logo by Elia Schito" width="105" height="105" />
+  <br/>
+  Opal  <br/>
+  <img src="https://img.shields.io/badge/Opal-Ruby%20💛%20JavaScript-yellow.svg?logo=ruby&style=social&logoColor=777" alt="Opal-Ruby 💛 JavaScript"/>
+</h1>
 
-## URL scheme
+<p align="center">
+  <em><strong>Opal</strong> is a Ruby to JavaScript source-to-source compiler.<br>
+    It also has an implementation of the Ruby <code>corelib</code> and <code>stdlib</code>.</em>
+</p>
 
-    //cdn.opalrb.com/opal/<VERSION>/opal.js
-    //cdn.opalrb.com/opal/<VERSION>/opal.min.js
-    //cdn.opalrb.com/opal/<VERSION>/opal.min.js.gz
+<p align="center">
+  <strong>Community:</strong><br>
+  <a href="https://stackoverflow.com/questions/ask?tags=opalrb"><img src="https://img.shields.io/badge/stackoverflow-%23opalrb-orange.svg?style=flat" alt="Stack Overflow" title="" /></a>
+  <a href="#backers"><img src="https://opencollective.com/opal/backers/badge.svg" alt="Backers on Open Collective" title="" /></a>
+  <a href="#sponsors"><img src="https://opencollective.com/opal/sponsors/badge.svg" alt="Sponsors on Open Collective" title="" /></a>
+  <a href="https://slack.opalrb.com/"><img src="https://img.shields.io/badge/slack-join%20chat-46BC99?logo=slack&style=flat" alt="Slack" title="Join Chat" /></a>
+  <a href="https://opalrb.com/docs"><img src="https://img.shields.io/badge/docs-updated-blue.svg" alt="Documentation" title="" /></a>
+  
+  <br>
+  <strong>Code:</strong><br>
+  <a href="https://badge.fury.io/rb/opal"><img src="https://img.shields.io/gem/v/opal.svg?style=flat" alt="Gem Version" title="" /></a>
+  <a href="https://github.com/opal/opal/actions?query=workflow%3Abuild"><img src="https://github.com/opal/opal/workflows/build/badge.svg" alt="Build Status" /></a>
+  <a href="https://codeclimate.com/github/opal/opal"><img src="https://img.shields.io/codeclimate/maintainability-percentage/opal/opal.svg" alt="Code Climate" title="" /></a>
+  <a href="https://coveralls.io/github/opal/opal?branch=master"><img src="https://coveralls.io/repos/opal/opal/badge.svg?branch=master&amp;service=github" alt="Coverage Status" title="" /></a>
+  
+  <br>
+  <strong>Sponsors:</strong>
+  <br/><a href="https://nebulab.it?utm_source=github&utm_medium=badge"><img src="https://img.shields.io/static/v1?label=Nebulab&message=Open+Source+Fridays&color=%235dbefd&logo=data:image/png;base64,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" alt="Nebulab: Open Source Fridays" /></a>
+</p>
 
-Where `<VERSION>` is the desired version number or `current`, examples:
+## Usage
 
-    //cdn.opalrb.com/opal/0.10.1/opal.js
-    //cdn.opalrb.com/opal/0.9.4/date.min.js
-    //cdn.opalrb.com/opal/current/base64.min.js.gz
+See the website for more detailed instructions and guides for Rails, jQuery, Sinatra, rack, CDN, etc. [https://opalrb.com](https://opalrb.com).
 
+### Compiling Ruby code with the CLI (Command Line Interface)
 
-## Embedding in your HTML
+Contents of `app.rb`:
+
+```ruby
+puts 'Hello world!'
+```
+
+Then from the terminal
+
+```bash
+$ opal --compile app.rb > app.js # The Opal runtime is included by default
+                                 # but can be skipped with the --no-opal flag
+```
+
+The resulting JavaScript file can be used normally from an HTML page:
 
 ```html
-<!doctype html>
-<html>
-<head>
-  <script src="http://cdn.opalrb.com/opal/current/opal.min.js"></script>
-  <script src="http://cdn.opalrb.com/opal/current/native.min.js"></script>
-  <script src="http://cdn.opalrb.com/opal/current/opal-parser.min.js"></script>
-  <script type="text/javascript">Opal.load('opal-parser')</script>
-  <script type="text/javascript">Opal.load('native')</script>
-</head>
-<body>
-  <script type="text/ruby">
-  #<![CDATA[
-    puts 'Hello from the console!'
-    $$[:document].write %{
-<!doctype html>
+<script src="app.js"></script>
+```
+
+Be sure to set the page encoding to `UTF-8` inside your `<head>` tag as follows:
+
+```html
+<!DOCTYPE html>
 <html>
-<head>
-  <style>body{font-family:sans-serif;font-weight:100;}</style>
-</head>
-<body>
-<h1 id="opal_cdn_distribution">Opal CDN distribution</h1>
+  <head>
+    <meta charset="utf-8">
+    <script src="app.js"></script>
+    …
+  </head>
+  <body>
+    …
+  </body>
+</html>
+```
 
-<h2 id="url_scheme">URL scheme</h2>
+Just open this page in a browser and check the JavaScript console.
 
-<pre><code>//cdn.opalrb.com/opal/&lt;VERSION&gt;/opal.js
-//cdn.opalrb.com/opal/&lt;VERSION&gt;/opal.min.js
-//cdn.opalrb.com/opal/&lt;VERSION&gt;/opal.min.js.gz
-</code></pre>
 
-<p>Where <code>&lt;VERSION&gt;</code> is the desired version number or <code>current</code>, examples:</p>
+### Compiling Ruby code from Ruby
 
-<pre><code>//cdn.opalrb.com/opal/0.10.1/opal.js
-//cdn.opalrb.com/opal/0.9.4/date.min.js
-//cdn.opalrb.com/opal/current/base64.min.js.gz
-</code></pre>
+`Opal.compile` is a simple interface to just compile a string of Ruby into a
+string of JavaScript code.
 
-<h2 id="license">License</h2>
+```ruby
+Opal.compile("puts 'wow'")  # => "(function() { ... self.$puts("wow"); ... })()"
+```
 
-<p>See <a href="http://example.com/">http://opalrb.com</a>.</p>
-</body>
-</html>
-    }
-  #]]>
-  </script>
-</body>
+Running this by itself is not enough; you need the opal runtime/corelib.
+
+#### Using Opal::Builder
+
+`Opal::Builder` can be used to build the runtime/corelib into a string.
+
+```ruby
+Opal::Builder.build('opal') #=> "(function() { ... })()"
+```
+
+or to build an entire app including dependencies declared with `require`:
+
+```ruby
+builder = Opal::Builder.new
+builder.build_str('require "opal"; puts "wow"', '(inline)')
+File.write 'app.js', builder.to_s
+```
+
+
+### Compiling Ruby code from HTML (or using it as you would with inline JavaScript)
+
+`opal-parser` allows you to *eval* Ruby code directly from your HTML (and from Opal) files without needing any other building process.
+
+So you can create a file like the one below, and start writing ruby for
+your web applications.
+
+
+```html
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <script src="https://cdn.opalrb.com/opal/current/opal.js"></script>
+    <script src="https://cdn.opalrb.com/opal/current/opal-parser.js" onload="Opal.load('opal-parser')"></script>
+
+    <script type="text/ruby">
+      puts "hi"
+    </script>
+
+  </head>
+  <body>
+  </body>
 </html>
 ```
 
-## Updating
+Just open this page and check the JavaScript console.
+
+**NOTE**: Although this is possible, this is not really recommended for
+production and should only be used as a quick way to get your hands
+on opal.
+
+## Running tests
+
+Setup the project:
+
+    $ bin/setup
+
+The test suite can be run using:
+
+    $ bundle exec rake
+
+This will command will run all RSpec and MSpec examples in sequence.
+
+#### Automated runs
 
-### Opal
+A `Guardfile` with decent mappings between specs and lib/corelib/stdlib files is in place.
+Run `bundle exec guard -i` to start `guard`.
 
-From the `opal` dir, assuming there's a checkout of the `gh-pages` branch of `opal-cdn` in the `cdn/` folder:
 
-    $ rake dist DIR=cdn/opal/0.7.0.dev
-    $ rake dist DIR=cdn/opal/master
+### MSpec
 
-### External libraries
+[MSpec][] tests can be run with:
 
-    $ opal-build -ropal/browser browser     > cdn/external/0.6.2/opal-browser-0.2.0.beta1.js
-    $ opal-build -ropal-jquery  opal-jquery > cdn/external/0.6.2/opal-jquery-0.2.0.js
+    $ rake mspec
+
+Alternatively, you can just load up a rack instance using `rackup`, and
+visit `http://localhost:9292/` in any web browser.
+
+
+### RSpec
+
+[RSpec][] tests can be run with:
+
+    $ rake rspec
+
+
+## Code Overview
+
+What code is supposed to run where?
+
+* `lib/` code runs inside your Ruby env. It compiles Ruby to JavaScript.
+* `opal/` is the runtime+corelib for our implementation (runs in browser).
+* `stdlib/` is our implementation of Ruby's stdlib. It is optional (runs in browser).
+
+### lib/
+
+The `lib` directory holds the **Opal parser/compiler** used to compile Ruby
+into JavaScript. It is also built ready for the browser into `opal-parser.js`
+to allow compilation in any JavaScript environment.
+
+### opal/
+
+This directory holds the **Opal runtime and corelib** implemented in Ruby and
+JavaScript.
+
+### stdlib/
+
+Holds the **stdlib currently supported by Opal**. This includes `Observable`,
+`StringScanner`, `Date`, etc.
+
+## Browser support
+
+* Internet Explorer 11
+* Firefox (Current - 1) or Current
+* Chrome (Current - 1) or Current
+* Safari (Current - 1) or Current
+* Opera (Current - 1) or Current
+
+Any problems encountered using the browsers listed above should be reported as bugs.
+
+(Current - 1) or Current denotes that we support the current stable version of
+the browser and the version that preceded it. For example, if the current
+version of a browser is 24.x, we support the 24.x and 23.x versions.
+
+12.1x or (Current - 1) or Current denotes that we support Opera 12.1x as well
+as the last 2 versions of Opera. For example, if the current Opera version is 20.x,
+then we support Opera 12.1x, 19.x and 20.x but not Opera 15.x through 18.x.
+
+## Contributors
+
+This project exists thanks to all the people who contribute. [![contributors](https://opencollective.com/opal/contributors.svg?width=890&button=false")](https://github.com/opal/opal/graphs/contributors)
+
+## Versioning
+
+Opal will broadly follow semver as a version policy, trying to bump the major version when introducing breaking changes.
+Being a language implementation we're also aware that there's a fine line between what can be considered breaking and what is expected to be "safe" or just "additive". Moving forward we'll attempt to better clarify what interfaces are meant to be public and what should be considered private.
+
+## Backers
+
+Thank you to all our backers! 🙏 [[Become a backer](https://opencollective.com/opal#backer)]
+
+<a href="https://opencollective.com/opal#backers" target="_blank"><img src="https://opencollective.com/opal/backers.svg?width=890" alt="Become a Backer Button" /></a>
+<a href="https://opencollective.com/opal/sponsor/1/website" target="_blank"><img src="https://opencollective.com/opal/sponsor/1/avatar.svg"></a>
+<a href="https://opencollective.com/opal/sponsor/2/website" target="_blank"><img src="https://opencollective.com/opal/sponsor/2/avatar.svg"></a>
+<a href="https://opencollective.com/opal/sponsor/3/website" target="_blank"><img src="https://opencollective.com/opal/sponsor/3/avatar.svg"></a>
+<a href="https://opencollective.com/opal/sponsor/4/website" target="_blank"><img src="https://opencollective.com/opal/sponsor/4/avatar.svg"></a>
+<a href="https://opencollective.com/opal/sponsor/5/website" target="_blank"><img src="https://opencollective.com/opal/sponsor/5/avatar.svg"></a>
+<a href="https://opencollective.com/opal/sponsor/6/website" target="_blank"><img src="https://opencollective.com/opal/sponsor/6/avatar.svg"></a>
+<a href="https://opencollective.com/opal/sponsor/7/website" target="_blank"><img src="https://opencollective.com/opal/sponsor/7/avatar.svg"></a>
+<a href="https://opencollective.com/opal/sponsor/8/website" target="_blank"><img src="https://opencollective.com/opal/sponsor/8/avatar.svg"></a>
+<a href="https://opencollective.com/opal/sponsor/9/website" target="_blank"><img src="https://opencollective.com/opal/sponsor/9/avatar.svg"></a>
+
+
+## Sponsors
+
+### Donations
+
+Support this project by becoming a sponsor. Your logo will show up here with a link to your website. [[Become a sponsor](https://opencollective.com/opal#sponsor)]
+
+<a href="https://opencollective.com/opal/sponsor/0/website" target="_blank"><img src="https://opencollective.com/opal/sponsor/0/avatar.svg" alt="Become a Sponsor Button"></a>
+
+### Sponsored Contributions
+
+<a href="https://nebulab.it/?utm_source=github&utm_medium=sponsors" target="_blank"><img src="https://nebulab.com/assets/img/logo-nebulab_black.svg" alt="Nebulab Logo"></a>
 
 
 ## License
 
-See [http://opalrb.com](http://opalrb.com).
+(The MIT License)
+
+Copyright (C) 2013-2021 by Adam Beynon and the Opal contributors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+
 
+[MSpec]: https://github.com/ruby/mspec#readme
+[RSpec]: https://github.com/rspec/rspec#readme
diff --git a/Rakefile b/Rakefile
new file mode 100644
index 00000000..9ff21877
--- /dev/null
+++ b/Rakefile
@@ -0,0 +1,12 @@
+# FIXME: there must be a better way
+Encoding.default_external = 'utf-8'
+
+import 'tasks/github.rake'
+import 'tasks/testing.rake'
+import 'tasks/building.rake'
+import 'tasks/linting.rake'
+import 'tasks/benchmarking.rake'
+import 'tasks/releasing.rake'
+import 'tasks/performance.rake'
+
+task :default => [:rspec, :mspec, :minitest]
diff --git a/UNRELEASED.md b/UNRELEASED.md
new file mode 100644
index 00000000..0b921db2
--- /dev/null
+++ b/UNRELEASED.md
@@ -0,0 +1,32 @@
+### Added
+
+- Introduce timezone support for Time (#2394)
+- DateTime and Date refactor (#2398)
+- Implement `Number#prev_float`/`#next_float` (#2404)
+
+### Changed
+
+- Move Math IE11-supporting polyfills to a separate file (#2395)
+
+### Internal
+
+- Improve performance of argument coertion, fast-track `Integer`, `String`, and calling the designed coertion method (#2383)
+- Optimize `Array#[]=` by moving the implementation to JavaScript and inlining type checks (#2383)
+- Optimize internal runtime passing of block-options (#2383)
+
+### Fixed
+
+- Fix `Regexp.new`, previously `\A` and `\z` didn't match beginning and end of input (#2079)
+- Fix exception during `Hash#each` and `Hash#each_key` if keys get deleted during the loop (#2403)
+
+### Internal
+
+- Rewriters refactor, fix interaction between cache and iverted runner (#2400)
+
+<!--
+### Internal
+### Changed
+### Added
+### Removed
+### Deprecated
+-->
diff --git a/benchmark-ips/README.md b/benchmark-ips/README.md
new file mode 100644
index 00000000..75b8f4f3
--- /dev/null
+++ b/benchmark-ips/README.md
@@ -0,0 +1,6 @@
+Usage:
+
+    bundle exec rake bench:ips
+    bundle exec rake bench:ips FILE=benchmark-ips/bm_while_true_vs_loop.rb
+
+For details see `tasks/benchmarking.rake`
diff --git a/benchmark-ips/bm_array_pop_1.rb b/benchmark-ips/bm_array_pop_1.rb
new file mode 100644
index 00000000..cab4658d
--- /dev/null
+++ b/benchmark-ips/bm_array_pop_1.rb
@@ -0,0 +1,8 @@
+Benchmark.ips do |x|
+  x.report('pop(1)') do
+    a = ['4768', '4964', '4266', '4872', '4231', '4017', '4565', '4793', '4298', '4135', '4639', '4780', '4237', '4548', '4655', '4153', '4654', '4922', '4563', '4042', '4329', '4699', '4352', '4127', '4544', '4906', '4814', '4948', '4977', '4830', '4405', '4642', '4666', '4402', '4679', '4465', '4401', '4155', '4767', '4510', '4747', '4993', '4508', '4697', '4758', '4133', '4348', '4200', '4442', '4970', '4452', '4041', '4103', '4567', '4937', '4047', '4933', '4121', '4860', '4659', '4221', '4312', '4583', '4473', '4973', '4262', '4630', '4123', '4139', '4289', '4147', '4222', '4050', '4019', '4454', '4253', '4552', '4947', '4725', '4457', '4929', '4021', '4502', '4307', '4576', '4124', '4586', '4610', '4027', '4572', '4926', '4753', '4185', '4382', '4394', '4923', '4186', '4254', '4012', '4417', '4556', '4349', '4550', '4330', '4938', '4985', '4778', '4716', '4924', '4045', '4358', '4189', '4591', '4213', '4851', '4825', '4260', '4198', '4342', '4824', '4333', '4244', '4752', '4994', '4488', '4532', '4082', '4595', '4098', '4436', '4540', '4267', '4407', '4998', '4751', '4535', '4861', '4819', '4419', '4031', '4029', '4453', '4698', '4965', '4450', '4668', '4036', '4300', '4519', '4281', '4981', '4818', '4939', '4378', '4140', '4841', '4249', '4290', '4388', '4878', '4884', '4235', '4515', '4638', '4410', '4054', '4383', '4238', '4870', '4295', '4804', '4308', '4614', '4105', '4053', '4446', '4757', '4971', '4637', '4831', '4193', '4912', '4000', '4187', '4606', '4566', '4169', '4641', '4749', '4729', '4928', '4601', '4949', '4210', '4313', '4647', '4495', '4460', '4621', '4605', '4694', '4317', '4226', '4263', '4016', '4997', '4940', '4715', '4907', '4620', '4934', '4996', '4955', '4688', '4304', '4220', '4882', '4772', '4536', '4815', '4693', '4469', '4276', '4409', '4071', '4224', '4020', '4629', '4865', '4813', '4366', '4622', '4129', '4533', '4634', '4564', '4087', '4386', '4161', '4265', '4711', '4009', '4376', '4781', '4837', '4112', '4915', '4592', '4658', '4025', '4987', '4291', '4477', '4503', '4437', '4111', '4707', '4879', '4611', '4549', '4078', '4044', '4853', '4835', '4463', '4577', '4008', '4233', '4741', '4384', '4225', '4024', '4726', '4743', '4160', '4180', '4722', '4609', '4114', '4834', '4742', '4662', '4984', '4299', '4060', '4498', '4755', '4320', '4874', '4528', '4216', '4852', '4951', '4958', '4283', '4239', '4476', '4644', '4143', '4104', '4455', '4126', '4950', '4663', '4013', '4931', '4850', '4242', '4130', '4623', '4871', '4014', '4854', '4293', '4512', '4166', '4740', '4735', '4150', '4651', '4172', '4836', '4530', '4664', '4429', '4511', '4558', '4676', '4085', '4074', '4580', '4794', '4379', '4310', '4817', '4966', '4848', '4202', '4336', '4608', '4351', '4396', '4652', '4033', '4188', '4431', '4916', '4259', '4607', '4816', '4810', '4627', '4527', '4560', '4728', '4589', '4274', '4809', '4790', '4398', '4414', '4516', '4581', '4919', '4665', '4331', '4978', '4543', '4877', '4974', '4284', '4004', '4177', '4466', '4116', '4217', '4901', '4372', '4137', '4806', '4264', '4497', '4294', '4787', '4212', '4215', '4115', '4782', '4739', '4821', '4125', '4505', '4230', '4399', '4395', '4079', '4867', '4381', '4706', '4695', '4404', '4691', '4075', '4353', '4301', '4876', '4731', '4523', '4246', '4529', '4412', '4784', '4449', '4229', '4616', '4158', '4002', '4318', '4377', '4205', '4911', '4777', '4792', '4271', '4763', '4141', '4287', '4890', '4279', '4829', '4646', '4840', '4089', '4880', '4067', '4918', '4059', '4109', '4164', '4863', '4883', '4909', '4361', '4174', '4960', '4302', '4003', '4236', '4846', '4034', '4324', '4513', '4765', '4596', '4900', '4007', '4603', '4474', '4439', '4805', '4015', '4496', '4953', '4363', '4551', '4459', '4063', '4983', '4881', '4365', '4604', '4587', '4798', '4005', '4163', '4421', '4471', '4826', '4144', '4635', '4600', '4913', '4640', '4247', '4766', '4779', '4280', '4391', '4891', '4636', '4546', '4683', '4181', '4081', '4862', '4458', '4037', '4321', '4786', '4717', '4628', '4154', '4326', '4032', '4873', '4151', '4905', '4270', '4156', '4733', '4980', '4866', '4325', '4055', '4467', '4480', '4286', '4191', '4762', '4322', '4574', '4022', '4056', '4770', '4451', '4448', '4845', '4341', '4433', '4245', '4684', '4671', '4093', '4920', '4272', '4745', '4799', '4761', '4250', '4578', '4347', '4499', '4526', '4369', '4162', '4537', '4434', '4893', '4120', '4962', '4667', '4525', '4091', '4462', '4182', '4738', '4935', '4173', '4490', '4571', '4424', '4894', '4051', '4214', '4823', '4096', '4206', '4598', '4943', '4701', '4649', '4807', '4107', '4435', '4456', '4083', '4612', '4721', '4472', '4146', '4925', '4340', '4789', '4277', '4375', '4211', '4427', '4547', '4690', '4613', '4727', '4006', '4203', '4430', '4223', '4039', '4932', '4296', '4108', '4278', '4832', '4422', '4917', '4470', '4183', '4887', '4076', '4485', '4597', '4443', '4257', '4991', '4944', '4196', '4672', '4397', '4097', '4119', '4077', '4773', '4602', '4538', '4479', '4968', '4159', '4539', '4956', '4710', '4812', '4902', '4569', '4954', '4385', '4128', '4936', '4416', '4148', '4632', '4759', '4117', '4896', '4392', '4864', '4316', '4132', '4319', '4969', '4175', '4484', '4903', '4910', '4350', '4332', '4952', '4176', '4594', '4709', '4509', '4178', '4167', '4545', '4857', '4617', '4501', '4859', '4207', '4275', '4687', '4049', '4579', '4046', '4921', '4113', '4898', '4681', '4052', '4415', '4064', '4184', '4895', '4744', '4685', '4084', '4305', '4899', '4559', '4208', '4057', '4507', '4258', '4355', '4086', '4373', '4323', '4541', '4297', '4483', '4889', '4531', '4327', '4441', '4914', '4303', '4677', '4445', '4802', '4343', '4585', '4338', '4524', '4590', '4624', '4288', '4704', '4134', '4043', '4720', '4058', '4328', '4095', '4026', '4423', '4657', '4118', '4633', '4487', '4822', '4904', '4255', '4001', '4387', '4500', '4190', '4686', '4995', '4661', '4783', '4992', '4165', '4065', '4927', '4306', '4856', '4292', '4420', '4963', '4468', '4240', '4724', '4432', '4447', '4518', '4028', '4670', '4339', '4771', '4018', '4489', '4110', '4708', '4945', '4136', '4492', '4930', '4090', '4734', '4886', '4542', '4227', '4486', '4491', '4713', '4986', '4068', '4048', '4975', '4570', '4842', '4475', '4131', '4555', '4428', '4776', '4101', '4273', '4811', '4345', '5000', '4653', '4256', '4209', '4769', '4946', '4561', '4080', '4461', '4820', '4311', '4959', '4750', '4795', '4748', '4368', '4506', '4335', '4346', '4568', '4675', '4692', '4774', '4413', '4370', '4723', '4521', '4885', '4678', '4897', '4066', '4674', '4106', '4626', '4389', '4204', '4839', '4023', '4712', '4145', '4035', '4357', '4756', '4648', '4972', '4157', '4406', '4615', '4061', '4219', '4791', '4660', '4073', '4356', '4072', '4599', '4359', '4094', '4673', '4696', '4796', '4282', '4714', '4522', '4736', '4775', '4760', '4400', '4847', '4228', '4803', '4908', '4732', '4645', '4122', '4218', '4478', '4941', '4892', '4364', '4403', '4152', '4444', '4360', '4354', '4241', '4494', '4367', '4808', '4261', '4088', '4573', '4554', '4248', '4371', '4393', '4268', '4201', '4038', '4788', '4593', '4040', '4801', '4582', '4309', '4976', '4374', '4869', '4380', '4514', '4243', '4362', '4849', '4680', '4888', '4764', '4618', '4838', '4828', '4643', '4010', '4827', '4957', '4099', '4875', '4843', '4737', '4102', '4979', '4011', '4504', '4440', '4746', '4557', '4426', '4553', '4656', '4868', '4689', '4988', '4703', '4967', '4069', '4619', '4334', '4669', '4785', '4464', '4562', '4961', '4625', '4754', '4797', '4481', '4705', '4199', '4337', '4062', '4138', '4702', '4534', '4168', '4418', '4092', '4682', '4520', '4030', '4171', '4650', '4858', '4411', '4999', '4252', '4197', '4170', '4942', '4631', '4990', '4179', '4285', '4700', '4482', '4575', '4800', '4070', '4251', '4344', '4982', '4719', '4390', '4149', '4100', '4194', '4269', '4855', '4314', '4718', '4232', '4730', '4438', '4588', '4195', '4192', '4493', '4517', '4833', '4234', '4989', '4315', '4844', '4142', '4408', '4584', '4425']
+    a.pop(1)
+  end
+
+  x.compare!
+end
diff --git a/benchmark-ips/bm_array_shift.rb b/benchmark-ips/bm_array_shift.rb
new file mode 100644
index 00000000..f32d6e9b
--- /dev/null
+++ b/benchmark-ips/bm_array_shift.rb
@@ -0,0 +1,7 @@
+Benchmark.ips do |x|
+  x.report("shift no arg") do
+    a = ['4768', '4964', '4266', '4872', '4231', '4017', '4565', '4793', '4298', '4135', '4639', '4780', '4237', '4548', '4655', '4153', '4654', '4922', '4563', '4042', '4329', '4699', '4352', '4127', '4544', '4906', '4814', '4948', '4977', '4830', '4405', '4642', '4666', '4402', '4679', '4465', '4401', '4155', '4767', '4510', '4747', '4993', '4508', '4697', '4758', '4133', '4348', '4200', '4442', '4970', '4452', '4041', '4103', '4567', '4937', '4047', '4933', '4121', '4860', '4659', '4221', '4312', '4583', '4473', '4973', '4262', '4630', '4123', '4139', '4289', '4147', '4222', '4050', '4019', '4454', '4253', '4552', '4947', '4725', '4457', '4929', '4021', '4502', '4307', '4576', '4124', '4586', '4610', '4027', '4572', '4926', '4753', '4185', '4382', '4394', '4923', '4186', '4254', '4012', '4417', '4556', '4349', '4550', '4330', '4938', '4985', '4778', '4716', '4924', '4045', '4358', '4189', '4591', '4213', '4851', '4825', '4260', '4198', '4342', '4824', '4333', '4244', '4752', '4994', '4488', '4532', '4082', '4595', '4098', '4436', '4540', '4267', '4407', '4998', '4751', '4535', '4861', '4819', '4419', '4031', '4029', '4453', '4698', '4965', '4450', '4668', '4036', '4300', '4519', '4281', '4981', '4818', '4939', '4378', '4140', '4841', '4249', '4290', '4388', '4878', '4884', '4235', '4515', '4638', '4410', '4054', '4383', '4238', '4870', '4295', '4804', '4308', '4614', '4105', '4053', '4446', '4757', '4971', '4637', '4831', '4193', '4912', '4000', '4187', '4606', '4566', '4169', '4641', '4749', '4729', '4928', '4601', '4949', '4210', '4313', '4647', '4495', '4460', '4621', '4605', '4694', '4317', '4226', '4263', '4016', '4997', '4940', '4715', '4907', '4620', '4934', '4996', '4955', '4688', '4304', '4220', '4882', '4772', '4536', '4815', '4693', '4469', '4276', '4409', '4071', '4224', '4020', '4629', '4865', '4813', '4366', '4622', '4129', '4533', '4634', '4564', '4087', '4386', '4161', '4265', '4711', '4009', '4376', '4781', '4837', '4112', '4915', '4592', '4658', '4025', '4987', '4291', '4477', '4503', '4437', '4111', '4707', '4879', '4611', '4549', '4078', '4044', '4853', '4835', '4463', '4577', '4008', '4233', '4741', '4384', '4225', '4024', '4726', '4743', '4160', '4180', '4722', '4609', '4114', '4834', '4742', '4662', '4984', '4299', '4060', '4498', '4755', '4320', '4874', '4528', '4216', '4852', '4951', '4958', '4283', '4239', '4476', '4644', '4143', '4104', '4455', '4126', '4950', '4663', '4013', '4931', '4850', '4242', '4130', '4623', '4871', '4014', '4854', '4293', '4512', '4166', '4740', '4735', '4150', '4651', '4172', '4836', '4530', '4664', '4429', '4511', '4558', '4676', '4085', '4074', '4580', '4794', '4379', '4310', '4817', '4966', '4848', '4202', '4336', '4608', '4351', '4396', '4652', '4033', '4188', '4431', '4916', '4259', '4607', '4816', '4810', '4627', '4527', '4560', '4728', '4589', '4274', '4809', '4790', '4398', '4414', '4516', '4581', '4919', '4665', '4331', '4978', '4543', '4877', '4974', '4284', '4004', '4177', '4466', '4116', '4217', '4901', '4372', '4137', '4806', '4264', '4497', '4294', '4787', '4212', '4215', '4115', '4782', '4739', '4821', '4125', '4505', '4230', '4399', '4395', '4079', '4867', '4381', '4706', '4695', '4404', '4691', '4075', '4353', '4301', '4876', '4731', '4523', '4246', '4529', '4412', '4784', '4449', '4229', '4616', '4158', '4002', '4318', '4377', '4205', '4911', '4777', '4792', '4271', '4763', '4141', '4287', '4890', '4279', '4829', '4646', '4840', '4089', '4880', '4067', '4918', '4059', '4109', '4164', '4863', '4883', '4909', '4361', '4174', '4960', '4302', '4003', '4236', '4846', '4034', '4324', '4513', '4765', '4596', '4900', '4007', '4603', '4474', '4439', '4805', '4015', '4496', '4953', '4363', '4551', '4459', '4063', '4983', '4881', '4365', '4604', '4587', '4798', '4005', '4163', '4421', '4471', '4826', '4144', '4635', '4600', '4913', '4640', '4247', '4766', '4779', '4280', '4391', '4891', '4636', '4546', '4683', '4181', '4081', '4862', '4458', '4037', '4321', '4786', '4717', '4628', '4154', '4326', '4032', '4873', '4151', '4905', '4270', '4156', '4733', '4980', '4866', '4325', '4055', '4467', '4480', '4286', '4191', '4762', '4322', '4574', '4022', '4056', '4770', '4451', '4448', '4845', '4341', '4433', '4245', '4684', '4671', '4093', '4920', '4272', '4745', '4799', '4761', '4250', '4578', '4347', '4499', '4526', '4369', '4162', '4537', '4434', '4893', '4120', '4962', '4667', '4525', '4091', '4462', '4182', '4738', '4935', '4173', '4490', '4571', '4424', '4894', '4051', '4214', '4823', '4096', '4206', '4598', '4943', '4701', '4649', '4807', '4107', '4435', '4456', '4083', '4612', '4721', '4472', '4146', '4925', '4340', '4789', '4277', '4375', '4211', '4427', '4547', '4690', '4613', '4727', '4006', '4203', '4430', '4223', '4039', '4932', '4296', '4108', '4278', '4832', '4422', '4917', '4470', '4183', '4887', '4076', '4485', '4597', '4443', '4257', '4991', '4944', '4196', '4672', '4397', '4097', '4119', '4077', '4773', '4602', '4538', '4479', '4968', '4159', '4539', '4956', '4710', '4812', '4902', '4569', '4954', '4385', '4128', '4936', '4416', '4148', '4632', '4759', '4117', '4896', '4392', '4864', '4316', '4132', '4319', '4969', '4175', '4484', '4903', '4910', '4350', '4332', '4952', '4176', '4594', '4709', '4509', '4178', '4167', '4545', '4857', '4617', '4501', '4859', '4207', '4275', '4687', '4049', '4579', '4046', '4921', '4113', '4898', '4681', '4052', '4415', '4064', '4184', '4895', '4744', '4685', '4084', '4305', '4899', '4559', '4208', '4057', '4507', '4258', '4355', '4086', '4373', '4323', '4541', '4297', '4483', '4889', '4531', '4327', '4441', '4914', '4303', '4677', '4445', '4802', '4343', '4585', '4338', '4524', '4590', '4624', '4288', '4704', '4134', '4043', '4720', '4058', '4328', '4095', '4026', '4423', '4657', '4118', '4633', '4487', '4822', '4904', '4255', '4001', '4387', '4500', '4190', '4686', '4995', '4661', '4783', '4992', '4165', '4065', '4927', '4306', '4856', '4292', '4420', '4963', '4468', '4240', '4724', '4432', '4447', '4518', '4028', '4670', '4339', '4771', '4018', '4489', '4110', '4708', '4945', '4136', '4492', '4930', '4090', '4734', '4886', '4542', '4227', '4486', '4491', '4713', '4986', '4068', '4048', '4975', '4570', '4842', '4475', '4131', '4555', '4428', '4776', '4101', '4273', '4811', '4345', '5000', '4653', '4256', '4209', '4769', '4946', '4561', '4080', '4461', '4820', '4311', '4959', '4750', '4795', '4748', '4368', '4506', '4335', '4346', '4568', '4675', '4692', '4774', '4413', '4370', '4723', '4521', '4885', '4678', '4897', '4066', '4674', '4106', '4626', '4389', '4204', '4839', '4023', '4712', '4145', '4035', '4357', '4756', '4648', '4972', '4157', '4406', '4615', '4061', '4219', '4791', '4660', '4073', '4356', '4072', '4599', '4359', '4094', '4673', '4696', '4796', '4282', '4714', '4522', '4736', '4775', '4760', '4400', '4847', '4228', '4803', '4908', '4732', '4645', '4122', '4218', '4478', '4941', '4892', '4364', '4403', '4152', '4444', '4360', '4354', '4241', '4494', '4367', '4808', '4261', '4088', '4573', '4554', '4248', '4371', '4393', '4268', '4201', '4038', '4788', '4593', '4040', '4801', '4582', '4309', '4976', '4374', '4869', '4380', '4514', '4243', '4362', '4849', '4680', '4888', '4764', '4618', '4838', '4828', '4643', '4010', '4827', '4957', '4099', '4875', '4843', '4737', '4102', '4979', '4011', '4504', '4440', '4746', '4557', '4426', '4553', '4656', '4868', '4689', '4988', '4703', '4967', '4069', '4619', '4334', '4669', '4785', '4464', '4562', '4961', '4625', '4754', '4797', '4481', '4705', '4199', '4337', '4062', '4138', '4702', '4534', '4168', '4418', '4092', '4682', '4520', '4030', '4171', '4650', '4858', '4411', '4999', '4252', '4197', '4170', '4942', '4631', '4990', '4179', '4285', '4700', '4482', '4575', '4800', '4070', '4251', '4344', '4982', '4719', '4390', '4149', '4100', '4194', '4269', '4855', '4314', '4718', '4232', '4730', '4438', '4588', '4195', '4192', '4493', '4517', '4833', '4234', '4989', '4315', '4844', '4142', '4408', '4584', '4425']
+    a.shift
+  end
+  x.compare!
+end
diff --git a/benchmark-ips/bm_array_unshift.rb b/benchmark-ips/bm_array_unshift.rb
new file mode 100644
index 00000000..73839d76
--- /dev/null
+++ b/benchmark-ips/bm_array_unshift.rb
@@ -0,0 +1,7 @@
+Benchmark.ips do |x|
+  x.report("unshift") do
+    a = ['4768', '4964', '4266', '4872', '4231', '4017', '4565', '4793', '4298', '4135', '4639', '4780', '4237', '4548', '4655', '4153', '4654', '4922', '4563', '4042', '4329', '4699', '4352', '4127', '4544', '4906', '4814', '4948', '4977', '4830', '4405', '4642', '4666', '4402', '4679', '4465', '4401', '4155', '4767', '4510', '4747', '4993', '4508', '4697', '4758', '4133', '4348', '4200', '4442', '4970', '4452', '4041', '4103', '4567', '4937', '4047', '4933', '4121', '4860', '4659', '4221', '4312', '4583', '4473', '4973', '4262', '4630', '4123', '4139', '4289', '4147', '4222', '4050', '4019', '4454', '4253', '4552', '4947', '4725', '4457', '4929', '4021', '4502', '4307', '4576', '4124', '4586', '4610', '4027', '4572', '4926', '4753', '4185', '4382', '4394', '4923', '4186', '4254', '4012', '4417', '4556', '4349', '4550', '4330', '4938', '4985', '4778', '4716', '4924', '4045', '4358', '4189', '4591', '4213', '4851', '4825', '4260', '4198', '4342', '4824', '4333', '4244', '4752', '4994', '4488', '4532', '4082', '4595', '4098', '4436', '4540', '4267', '4407', '4998', '4751', '4535', '4861', '4819', '4419', '4031', '4029', '4453', '4698', '4965', '4450', '4668', '4036', '4300', '4519', '4281', '4981', '4818', '4939', '4378', '4140', '4841', '4249', '4290', '4388', '4878', '4884', '4235', '4515', '4638', '4410', '4054', '4383', '4238', '4870', '4295', '4804', '4308', '4614', '4105', '4053', '4446', '4757', '4971', '4637', '4831', '4193', '4912', '4000', '4187', '4606', '4566', '4169', '4641', '4749', '4729', '4928', '4601', '4949', '4210', '4313', '4647', '4495', '4460', '4621', '4605', '4694', '4317', '4226', '4263', '4016', '4997', '4940', '4715', '4907', '4620', '4934', '4996', '4955', '4688', '4304', '4220', '4882', '4772', '4536', '4815', '4693', '4469', '4276', '4409', '4071', '4224', '4020', '4629', '4865', '4813', '4366', '4622', '4129', '4533', '4634', '4564', '4087', '4386', '4161', '4265', '4711', '4009', '4376', '4781', '4837', '4112', '4915', '4592', '4658', '4025', '4987', '4291', '4477', '4503', '4437', '4111', '4707', '4879', '4611', '4549', '4078', '4044', '4853', '4835', '4463', '4577', '4008', '4233', '4741', '4384', '4225', '4024', '4726', '4743', '4160', '4180', '4722', '4609', '4114', '4834', '4742', '4662', '4984', '4299', '4060', '4498', '4755', '4320', '4874', '4528', '4216', '4852', '4951', '4958', '4283', '4239', '4476', '4644', '4143', '4104', '4455', '4126', '4950', '4663', '4013', '4931', '4850', '4242', '4130', '4623', '4871', '4014', '4854', '4293', '4512', '4166', '4740', '4735', '4150', '4651', '4172', '4836', '4530', '4664', '4429', '4511', '4558', '4676', '4085', '4074', '4580', '4794', '4379', '4310', '4817', '4966', '4848', '4202', '4336', '4608', '4351', '4396', '4652', '4033', '4188', '4431', '4916', '4259', '4607', '4816', '4810', '4627', '4527', '4560', '4728', '4589', '4274', '4809', '4790', '4398', '4414', '4516', '4581', '4919', '4665', '4331', '4978', '4543', '4877', '4974', '4284', '4004', '4177', '4466', '4116', '4217', '4901', '4372', '4137', '4806', '4264', '4497', '4294', '4787', '4212', '4215', '4115', '4782', '4739', '4821', '4125', '4505', '4230', '4399', '4395', '4079', '4867', '4381', '4706', '4695', '4404', '4691', '4075', '4353', '4301', '4876', '4731', '4523', '4246', '4529', '4412', '4784', '4449', '4229', '4616', '4158', '4002', '4318', '4377', '4205', '4911', '4777', '4792', '4271', '4763', '4141', '4287', '4890', '4279', '4829', '4646', '4840', '4089', '4880', '4067', '4918', '4059', '4109', '4164', '4863', '4883', '4909', '4361', '4174', '4960', '4302', '4003', '4236', '4846', '4034', '4324', '4513', '4765', '4596', '4900', '4007', '4603', '4474', '4439', '4805', '4015', '4496', '4953', '4363', '4551', '4459', '4063', '4983', '4881', '4365', '4604', '4587', '4798', '4005', '4163', '4421', '4471', '4826', '4144', '4635', '4600', '4913', '4640', '4247', '4766', '4779', '4280', '4391', '4891', '4636', '4546', '4683', '4181', '4081', '4862', '4458', '4037', '4321', '4786', '4717', '4628', '4154', '4326', '4032', '4873', '4151', '4905', '4270', '4156', '4733', '4980', '4866', '4325', '4055', '4467', '4480', '4286', '4191', '4762', '4322', '4574', '4022', '4056', '4770', '4451', '4448', '4845', '4341', '4433', '4245', '4684', '4671', '4093', '4920', '4272', '4745', '4799', '4761', '4250', '4578', '4347', '4499', '4526', '4369', '4162', '4537', '4434', '4893', '4120', '4962', '4667', '4525', '4091', '4462', '4182', '4738', '4935', '4173', '4490', '4571', '4424', '4894', '4051', '4214', '4823', '4096', '4206', '4598', '4943', '4701', '4649', '4807', '4107', '4435', '4456', '4083', '4612', '4721', '4472', '4146', '4925', '4340', '4789', '4277', '4375', '4211', '4427', '4547', '4690', '4613', '4727', '4006', '4203', '4430', '4223', '4039', '4932', '4296', '4108', '4278', '4832', '4422', '4917', '4470', '4183', '4887', '4076', '4485', '4597', '4443', '4257', '4991', '4944', '4196', '4672', '4397', '4097', '4119', '4077', '4773', '4602', '4538', '4479', '4968', '4159', '4539', '4956', '4710', '4812', '4902', '4569', '4954', '4385', '4128', '4936', '4416', '4148', '4632', '4759', '4117', '4896', '4392', '4864', '4316', '4132', '4319', '4969', '4175', '4484', '4903', '4910', '4350', '4332', '4952', '4176', '4594', '4709', '4509', '4178', '4167', '4545', '4857', '4617', '4501', '4859', '4207', '4275', '4687', '4049', '4579', '4046', '4921', '4113', '4898', '4681', '4052', '4415', '4064', '4184', '4895', '4744', '4685', '4084', '4305', '4899', '4559', '4208', '4057', '4507', '4258', '4355', '4086', '4373', '4323', '4541', '4297', '4483', '4889', '4531', '4327', '4441', '4914', '4303', '4677', '4445', '4802', '4343', '4585', '4338', '4524', '4590', '4624', '4288', '4704', '4134', '4043', '4720', '4058', '4328', '4095', '4026', '4423', '4657', '4118', '4633', '4487', '4822', '4904', '4255', '4001', '4387', '4500', '4190', '4686', '4995', '4661', '4783', '4992', '4165', '4065', '4927', '4306', '4856', '4292', '4420', '4963', '4468', '4240', '4724', '4432', '4447', '4518', '4028', '4670', '4339', '4771', '4018', '4489', '4110', '4708', '4945', '4136', '4492', '4930', '4090', '4734', '4886', '4542', '4227', '4486', '4491', '4713', '4986', '4068', '4048', '4975', '4570', '4842', '4475', '4131', '4555', '4428', '4776', '4101', '4273', '4811', '4345', '5000', '4653', '4256', '4209', '4769', '4946', '4561', '4080', '4461', '4820', '4311', '4959', '4750', '4795', '4748', '4368', '4506', '4335', '4346', '4568', '4675', '4692', '4774', '4413', '4370', '4723', '4521', '4885', '4678', '4897', '4066', '4674', '4106', '4626', '4389', '4204', '4839', '4023', '4712', '4145', '4035', '4357', '4756', '4648', '4972', '4157', '4406', '4615', '4061', '4219', '4791', '4660', '4073', '4356', '4072', '4599', '4359', '4094', '4673', '4696', '4796', '4282', '4714', '4522', '4736', '4775', '4760', '4400', '4847', '4228', '4803', '4908', '4732', '4645', '4122', '4218', '4478', '4941', '4892', '4364', '4403', '4152', '4444', '4360', '4354', '4241', '4494', '4367', '4808', '4261', '4088', '4573', '4554', '4248', '4371', '4393', '4268', '4201', '4038', '4788', '4593', '4040', '4801', '4582', '4309', '4976', '4374', '4869', '4380', '4514', '4243', '4362', '4849', '4680', '4888', '4764', '4618', '4838', '4828', '4643', '4010', '4827', '4957', '4099', '4875', '4843', '4737', '4102', '4979', '4011', '4504', '4440', '4746', '4557', '4426', '4553', '4656', '4868', '4689', '4988', '4703', '4967', '4069', '4619', '4334', '4669', '4785', '4464', '4562', '4961', '4625', '4754', '4797', '4481', '4705', '4199', '4337', '4062', '4138', '4702', '4534', '4168', '4418', '4092', '4682', '4520', '4030', '4171', '4650', '4858', '4411', '4999', '4252', '4197', '4170', '4942', '4631', '4990', '4179', '4285', '4700', '4482', '4575', '4800', '4070', '4251', '4344', '4982', '4719', '4390', '4149', '4100', '4194', '4269', '4855', '4314', '4718', '4232', '4730', '4438', '4588', '4195', '4192', '4493', '4517', '4833', '4234', '4989', '4315', '4844', '4142', '4408', '4584', '4425']
+    a.unshift('aaa', 'bbb', 'ccc')
+  end
+  x.compare!
+end
diff --git a/benchmark-ips/bm_block_vs_yield.rb b/benchmark-ips/bm_block_vs_yield.rb
new file mode 100644
index 00000000..222d137e
--- /dev/null
+++ b/benchmark-ips/bm_block_vs_yield.rb
@@ -0,0 +1,21 @@
+module BmBlockVsYield
+  def self._block(&block)
+    block.call
+  end
+
+  def self._yield
+    yield
+  end
+end
+
+Benchmark.ips do |x|
+  x.report('block') do
+    BmBlockVsYield._block { 1+1 }
+  end
+
+  x.report('yield') do
+    BmBlockVsYield._yield { 1+1 }
+  end
+
+  x.compare!
+end
diff --git a/benchmark-ips/bm_case.rb b/benchmark-ips/bm_case.rb
new file mode 100644
index 00000000..1b7b45a6
--- /dev/null
+++ b/benchmark-ips/bm_case.rb
@@ -0,0 +1,33 @@
+Benchmark.ips do |x|
+  obj = Object.new
+  x.report("numeric statement") do
+    case 1
+    when 4 then 4
+    when 3 then 3
+    when 2 then 2
+    when 1 then 1
+    end
+    nil
+  end
+  x.report("statement") do
+    case 1
+    when 4 then 4
+    when 3 then 3
+    when 2 then 2
+    when obj then :obj
+    when 1 then 1
+    end
+    nil
+  end
+  x.report("expression") do
+    case 1
+    when 4 then 4
+    when 3 then 3
+    when 2 then 2
+    when obj then :obj
+    when 1 then 1
+    end
+  end
+
+  x.compare!
+end
diff --git a/benchmark-ips/bm_constants_lookup.rb b/benchmark-ips/bm_constants_lookup.rb
new file mode 100644
index 00000000..6919d35a
--- /dev/null
+++ b/benchmark-ips/bm_constants_lookup.rb
@@ -0,0 +1,13 @@
+module A
+  module B
+    module C
+      Benchmark.ips do |x|
+        x.report("Kernel") { Kernel }
+        x.report("::Kernel") { ::Kernel }
+        x.report("B") { B }
+        x.report("B::C") { B::C }
+        x.compare!
+      end
+    end
+  end
+end
diff --git a/benchmark-ips/bm_is_number.rb b/benchmark-ips/bm_is_number.rb
new file mode 100644
index 00000000..aa0a8409
--- /dev/null
+++ b/benchmark-ips/bm_is_number.rb
@@ -0,0 +1,29 @@
+# Why .$$is_number is better than isNaN:
+#
+#
+# Warming up --------------------------------------
+#         .$$is_number   106.722k i/100ms
+#              isNaN()   105.040k i/100ms
+#      obj.$$is_number   106.864k i/100ms
+#           isNaN(obj)    89.287k i/100ms
+# Calculating -------------------------------------
+#         .$$is_number     12.052M (± 6.6%) i/s -     59.978M in   5.002614s
+#              isNaN()     12.338M (± 5.4%) i/s -     61.448M in   4.997957s
+#      obj.$$is_number     12.514M (± 6.8%) i/s -     62.302M in   5.005715s
+#           isNaN(obj)      4.211M (± 5.9%) i/s -     20.982M in   5.001643s
+#
+# Comparison:
+#      obj.$$is_number: 12513664.2 i/s
+#              isNaN(): 12338259.3 i/s - same-ish: difference falls within error
+#         .$$is_number: 12051756.8 i/s - same-ish: difference falls within error
+#           isNaN(obj):  4211175.7 i/s - 2.97x  slower
+#
+Benchmark.ips do |x|
+  number = 123
+  number_obj = 123.itself
+  x.report(".$$is_number")    { number.JS['$$is_number'] }
+  x.report("isNaN()")         { `!isNaN(number)` }
+  x.report("obj.$$is_number") { number_obj.JS['$$is_number'] }
+  x.report("isNaN(obj)")      { `!isNaN(number_obj)` }
+  x.compare!
+end
diff --git a/benchmark-ips/bm_js_symbols_vs_strings.rb b/benchmark-ips/bm_js_symbols_vs_strings.rb
new file mode 100644
index 00000000..36f9de34
--- /dev/null
+++ b/benchmark-ips/bm_js_symbols_vs_strings.rb
@@ -0,0 +1,58 @@
+Benchmark.ips do |x|
+  %x{
+    const c_foo = 'foo'
+    const v_foo = 'foo'
+    const cfoo = Symbol('foo')
+    var vfoo = Symbol('foo')
+    const cgfoo = Symbol.for('foo')
+    var vgfoo = Symbol.for('foo')
+
+    var o = {}
+    o[cfoo] = 1
+    o[cgfoo] = 1
+    o[c_foo] = 1
+    o[vfoo] = 1
+
+    let a1 = 0, a2 = 0, a3 = 0, a4 = 0, a5 = 0, a6 = 0, a7 = 0, a8 = 0
+  }
+
+  x.report('const string ref') do
+    `a1 += o[c_foo]`
+  end
+
+  x.report('var string ref') do
+    `a2 += o[v_foo]`
+  end
+
+  x.report('live global symbol') do
+    `a3 += o[Symbol.for('foo')]`
+  end
+
+  x.report('const global symbol') do
+    `a4 += o[cgfoo]`
+  end
+
+  x.report('var global symbol') do
+    `a5 += o[vgfoo]`
+  end
+
+  x.report('const symbol') do
+    `a6 += o[cfoo]`
+  end
+
+  x.report('var symbol') do
+    `a6 += o[vfoo]`
+  end
+
+  x.report('ident') do
+    `a7 += o.foo`
+  end
+
+  x.report('live string') do
+    `a8 += o['foo']`
+  end
+
+  x.time = 10
+
+  x.compare!
+end
diff --git a/benchmark-ips/bm_symbol_to_proc.rb b/benchmark-ips/bm_symbol_to_proc.rb
new file mode 100644
index 00000000..c666d9b6
--- /dev/null
+++ b/benchmark-ips/bm_symbol_to_proc.rb
@@ -0,0 +1,19 @@
+# https://github.com/opal/opal/issues/1659#issuecomment-298222232
+
+Benchmark.ips do |x|
+  a = []
+
+  50.times do |i|
+    a << %(#{i}\n)
+  end
+
+  x.report('map block') do
+    a.map {|it| it.chomp }
+  end
+
+  x.report('map symbol') do
+    a.map(&:chomp)
+  end
+
+  x.compare!
+end
diff --git a/benchmark-ips/bm_truthy.rb b/benchmark-ips/bm_truthy.rb
new file mode 100644
index 00000000..bebd2ca3
--- /dev/null
+++ b/benchmark-ips/bm_truthy.rb
@@ -0,0 +1,30 @@
+Benchmark.ips do |x|
+  %x{
+    // Old version truthy logic
+    var old_version   = function(x) { return x !== nil && x != null && (!x.$$is_boolean || x == true); }
+
+    // New version truthy logic
+    var new_version_1 = function(val) { return undefined !== val && null !== val && false !== val && nil !== val && (!(val instanceof Boolean) || true === val.valueOf()); }
+
+    // Alternative new version truthy logic
+    var new_version_2 = function(val) { return undefined !== val && null !== val && false !== val && nil !== val && !(val instanceof Boolean && false === val.valueOf()); }
+
+    // Alternative new version, nil&false first
+    var new_version_3 = function(val) { return false !== val && nil !== val && undefined !== val && null !== val && !(val instanceof Boolean && false === val.valueOf()); }
+
+    // Alternative new version truthy logic that unsupports boxed booleans
+    var new_unboxed   = function(val) { return undefined !== val && null !== val && false !== val && nil !== val; }
+  }
+
+  values = [123,243,35,"sd",false,nil,123413234,120412,0,1234.1234,0.34,false,false,true,"sadfasf","","0",13,123,nil,Object.new,[]]
+
+  x.time = 32
+
+  x.report('old_version') { values.map(&`old_version`) }
+  x.report('new_version_1') { values.map(&`new_version_1`) }
+  x.report('new_version_2') { values.map(&`new_version_2`) }
+  x.report('new_version_3') { values.map(&`new_version_3`) }
+  x.report('new_unboxed') { values.map(&`new_unboxed`) }
+
+  x.compare!
+end
diff --git a/benchmark-ips/bm_while_true_vs_loop.rb b/benchmark-ips/bm_while_true_vs_loop.rb
new file mode 100644
index 00000000..d923d241
--- /dev/null
+++ b/benchmark-ips/bm_while_true_vs_loop.rb
@@ -0,0 +1,19 @@
+Benchmark.ips do |x|
+  x.report('while true') do
+    n = 0
+    while true
+      n += 1
+      break if n == 10000
+    end
+  end
+
+  x.report('loop') do
+    n = 0
+    loop do
+      n += 1
+      break if n == 10000
+    end
+  end
+
+  x.compare!
+end
diff --git a/benchmark-ips/class_shovel_vs_singleton_class.rb b/benchmark-ips/class_shovel_vs_singleton_class.rb
new file mode 100644
index 00000000..4f755bd9
--- /dev/null
+++ b/benchmark-ips/class_shovel_vs_singleton_class.rb
@@ -0,0 +1,16 @@
+o = nil
+Benchmark.ips do |x|
+  x.report('shovel') do
+    o = Object.new
+    class << o
+      attr_accessor :foo
+    end
+  end
+
+  x.report('singleton_class') do
+    o2 = Object.new
+    o2.singleton_class.attr_accessor :foo
+  end
+
+  x.compare!
+end
diff --git a/benchmark/benchmarks b/benchmark/benchmarks
new file mode 100644
index 00000000..7d119518
--- /dev/null
+++ b/benchmark/benchmarks
@@ -0,0 +1,103 @@
+test/cruby/benchmark/bm_app_answer.rb
+#[error] test/cruby/benchmark/bm_app_aobench.rb
+#[error] test/cruby/benchmark/bm_app_erb.rb
+test/cruby/benchmark/bm_app_factorial.rb
+test/cruby/benchmark/bm_app_fib.rb
+#[too long] test/cruby/benchmark/bm_app_lc_fizzbuzz.rb
+#[error] test/cruby/benchmark/bm_app_mandelbrot.rb
+#[too long] test/cruby/benchmark/bm_app_pentomino.rb
+#[longish] test/cruby/benchmark/bm_app_raise.rb
+test/cruby/benchmark/bm_app_strconcat.rb
+test/cruby/benchmark/bm_app_tak.rb
+test/cruby/benchmark/bm_app_tarai.rb
+#[error] test/cruby/benchmark/bm_app_uri.rb
+#[error] test/cruby/benchmark/bm_hash_aref_flo.rb
+test/cruby/benchmark/bm_hash_aref_miss.rb
+test/cruby/benchmark/bm_hash_aref_str.rb
+#[error] test/cruby/benchmark/bm_hash_aref_sym_long.rb
+#[error] test/cruby/benchmark/bm_hash_aref_sym.rb
+test/cruby/benchmark/bm_hash_flatten.rb
+#[error] test/cruby/benchmark/bm_hash_ident_flo.rb
+#[error] test/cruby/benchmark/bm_hash_ident_num.rb
+#[error] test/cruby/benchmark/bm_hash_ident_obj.rb
+#[error] test/cruby/benchmark/bm_hash_ident_str.rb
+#[error] test/cruby/benchmark/bm_hash_ident_sym.rb
+test/cruby/benchmark/bm_hash_keys.rb
+test/cruby/benchmark/bm_hash_shift.rb
+test/cruby/benchmark/bm_hash_values.rb
+test/cruby/benchmark/bm_loop_for.rb
+#[error] test/cruby/benchmark/bm_loop_generator.rb
+test/cruby/benchmark/bm_loop_times.rb
+test/cruby/benchmark/bm_loop_whileloop2.rb
+test/cruby/benchmark/bm_loop_whileloop.rb
+#[error] test/cruby/benchmark/bm_securerandom.rb
+test/cruby/benchmark/bm_so_ackermann.rb
+#[<30] test/cruby/benchmark/bm_so_array.rb
+#[error] test/cruby/benchmark/bm_so_binary_trees.rb
+#[error] test/cruby/benchmark/bm_so_concatenate.rb
+#[error] test/cruby/benchmark/bm_so_count_words.rb
+#[longish] test/cruby/benchmark/bm_so_exception.rb
+#[longish] test/cruby/benchmark/bm_so_fannkuch.rb
+#[error] test/cruby/benchmark/bm_so_fasta.rb
+#[error] test/cruby/benchmark/bm_so_k_nucleotide.rb
+test/cruby/benchmark/bm_so_lists.rb
+#[writes to stdout] test/cruby/benchmark/bm_so_mandelbrot.rb
+test/cruby/benchmark/bm_so_matrix.rb
+#[error] test/cruby/benchmark/bm_so_meteor_contest.rb
+#[error] test/cruby/benchmark/bm_so_nbody.rb
+test/cruby/benchmark/bm_so_nested_loop.rb
+#[error] test/cruby/benchmark/bm_so_nsieve_bits.rb
+#[error] test/cruby/benchmark/bm_so_nsieve.rb
+test/cruby/benchmark/bm_so_object.rb
+#[error] test/cruby/benchmark/bm_so_partial_sums.rb
+#[error] test/cruby/benchmark/bm_so_pidigits.rb
+test/cruby/benchmark/bm_so_random.rb
+#[error] test/cruby/benchmark/bm_so_reverse_complement.rb
+#[<30] test/cruby/benchmark/bm_so_sieve.rb
+#[error] test/cruby/benchmark/bm_so_spectralnorm.rb
+test/cruby/benchmark/bm_vm1_attr_ivar.rb
+test/cruby/benchmark/bm_vm1_attr_ivar_set.rb
+test/cruby/benchmark/bm_vm1_block.rb
+test/cruby/benchmark/bm_vm1_const.rb
+test/cruby/benchmark/bm_vm1_ensure.rb
+test/cruby/benchmark/bm_vm1_float_simple.rb
+test/cruby/benchmark/bm_vm1_gc_short_lived.rb
+test/cruby/benchmark/bm_vm1_ivar.rb
+test/cruby/benchmark/bm_vm1_ivar_set.rb
+test/cruby/benchmark/bm_vm1_length.rb
+test/cruby/benchmark/bm_vm1_lvar_init.rb
+test/cruby/benchmark/bm_vm1_lvar_set.rb
+test/cruby/benchmark/bm_vm1_neq.rb
+test/cruby/benchmark/bm_vm1_not.rb
+test/cruby/benchmark/bm_vm1_rescue.rb
+test/cruby/benchmark/bm_vm1_simplereturn.rb
+test/cruby/benchmark/bm_vm1_swap.rb
+test/cruby/benchmark/bm_vm1_yield.rb
+test/cruby/benchmark/bm_vm2_array.rb
+test/cruby/benchmark/bm_vm2_bigarray.rb
+test/cruby/benchmark/bm_vm2_bighash.rb
+test/cruby/benchmark/bm_vm2_case.rb
+test/cruby/benchmark/bm_vm2_defined_method.rb
+test/cruby/benchmark/bm_vm2_dstr.rb
+#[error] test/cruby/benchmark/bm_vm2_eval.rb
+test/cruby/benchmark/bm_vm2_method_missing.rb
+test/cruby/benchmark/bm_vm2_method.rb
+test/cruby/benchmark/bm_vm2_method_with_block.rb
+test/cruby/benchmark/bm_vm2_newlambda.rb
+test/cruby/benchmark/bm_vm2_poly_method_ov.rb
+test/cruby/benchmark/bm_vm2_poly_method.rb
+test/cruby/benchmark/bm_vm2_proc.rb
+#[longish] test/cruby/benchmark/bm_vm2_raise1.rb
+#[longish] test/cruby/benchmark/bm_vm2_raise2.rb
+#[error] test/cruby/benchmark/bm_vm2_regexp.rb
+test/cruby/benchmark/bm_vm2_send.rb
+test/cruby/benchmark/bm_vm2_struct_big_aref_hi.rb
+test/cruby/benchmark/bm_vm2_struct_big_aref_lo.rb
+test/cruby/benchmark/bm_vm2_struct_big_aset.rb
+test/cruby/benchmark/bm_vm2_struct_small_aref.rb
+test/cruby/benchmark/bm_vm2_struct_small_aset.rb
+test/cruby/benchmark/bm_vm2_super.rb
+test/cruby/benchmark/bm_vm2_unif1.rb
+test/cruby/benchmark/bm_vm2_zsuper.rb
+#[too long] test/cruby/benchmark/bm_vm3_backtrace.rb
+test/cruby/benchmark/bm_vm3_clearmethodcache.rb
diff --git a/benchmark/bm_array_flatten.rb b/benchmark/bm_array_flatten.rb
new file mode 100644
index 00000000..c51fa499
--- /dev/null
+++ b/benchmark/bm_array_flatten.rb
@@ -0,0 +1,9 @@
+a = []
+
+1000.times do |i|
+  a << [i]
+end
+
+1000.times do
+  a.flatten
+end
diff --git a/benchmark/bm_array_intersection_numbers.rb b/benchmark/bm_array_intersection_numbers.rb
new file mode 100644
index 00000000..758bb079
--- /dev/null
+++ b/benchmark/bm_array_intersection_numbers.rb
@@ -0,0 +1,7 @@
+a1 = [4768, 4964, 4266, 4872, 4231, 4017, 4565, 4793, 4298, 4135, 4639, 4780, 4237, 4548, 4655, 4153, 4654, 4922, 4563, 4042, 4329, 4699, 4352, 4127, 4544, 4906, 4814, 4948, 4977, 4830, 4405, 4642, 4666, 4402, 4679, 4465, 4401, 4155, 4767, 4510, 4747, 4993, 4508, 4697, 4758, 4133, 4348, 4200, 4442, 4970, 4452, 4041, 4103, 4567, 4937, 4047, 4933, 4121, 4860, 4659, 4221, 4312, 4583, 4473, 4973, 4262, 4630, 4123, 4139, 4289, 4147, 4222, 4050, 4019, 4454, 4253, 4552, 4947, 4725, 4457, 4929, 4021, 4502, 4307, 4576, 4124, 4586, 4610, 4027, 4572, 4926, 4753, 4185, 4382, 4394, 4923, 4186, 4254, 4012, 4417, 4556, 4349, 4550, 4330, 4938, 4985, 4778, 4716, 4924, 4045, 4358, 4189, 4591, 4213, 4851, 4825, 4260, 4198, 4342, 4824, 4333, 4244, 4752, 4994, 4488, 4532, 4082, 4595, 4098, 4436, 4540, 4267, 4407, 4998, 4751, 4535, 4861, 4819, 4419, 4031, 4029, 4453, 4698, 4965, 4450, 4668, 4036, 4300, 4519, 4281, 4981, 4818, 4939, 4378, 4140, 4841, 4249, 4290, 4388, 4878, 4884, 4235, 4515, 4638, 4410, 4054, 4383, 4238, 4870, 4295, 4804, 4308, 4614, 4105, 4053, 4446, 4757, 4971, 4637, 4831, 4193, 4912, 4000, 4187, 4606, 4566, 4169, 4641, 4749, 4729, 4928, 4601, 4949, 4210, 4313, 4647, 4495, 4460, 4621, 4605, 4694, 4317, 4226, 4263, 4016, 4997, 4940, 4715, 4907, 4620, 4934, 4996, 4955, 4688, 4304, 4220, 4882, 4772, 4536, 4815, 4693, 4469, 4276, 4409, 4071, 4224, 4020, 4629, 4865, 4813, 4366, 4622, 4129, 4533, 4634, 4564, 4087, 4386, 4161, 4265, 4711, 4009, 4376, 4781, 4837, 4112, 4915, 4592, 4658, 4025, 4987, 4291, 4477, 4503, 4437, 4111, 4707, 4879, 4611, 4549, 4078, 4044, 4853, 4835, 4463, 4577, 4008, 4233, 4741, 4384, 4225, 4024, 4726, 4743, 4160, 4180, 4722, 4609, 4114, 4834, 4742, 4662, 4984, 4299, 4060, 4498, 4755, 4320, 4874, 4528, 4216, 4852, 4951, 4958, 4283, 4239, 4476, 4644, 4143, 4104, 4455, 4126, 4950, 4663, 4013, 4931, 4850, 4242, 4130, 4623, 4871, 4014, 4854, 4293, 4512, 4166, 4740, 4735, 4150, 4651, 4172, 4836, 4530, 4664, 4429, 4511, 4558, 4676, 4085, 4074, 4580, 4794, 4379, 4310, 4817, 4966, 4848, 4202, 4336, 4608, 4351, 4396, 4652, 4033, 4188, 4431, 4916, 4259, 4607, 4816, 4810, 4627, 4527, 4560, 4728, 4589, 4274, 4809, 4790, 4398, 4414, 4516, 4581, 4919, 4665, 4331, 4978, 4543, 4877, 4974, 4284, 4004, 4177, 4466, 4116, 4217, 4901, 4372, 4137, 4806, 4264, 4497, 4294, 4787, 4212, 4215, 4115, 4782, 4739, 4821, 4125, 4505, 4230, 4399, 4395, 4079, 4867, 4381, 4706, 4695, 4404, 4691, 4075, 4353, 4301, 4876, 4731, 4523, 4246, 4529, 4412, 4784, 4449, 4229, 4616, 4158, 4002, 4318, 4377, 4205, 4911, 4777, 4792, 4271, 4763, 4141, 4287, 4890, 4279, 4829, 4646, 4840, 4089, 4880, 4067, 4918, 4059, 4109, 4164, 4863, 4883, 4909, 4361, 4174, 4960, 4302, 4003, 4236, 4846, 4034, 4324, 4513, 4765, 4596, 4900, 4007, 4603, 4474, 4439, 4805, 4015, 4496, 4953, 4363, 4551, 4459, 4063, 4983, 4881, 4365, 4604, 4587, 4798, 4005, 4163, 4421, 4471, 4826, 4144, 4635, 4600, 4913, 4640, 4247, 4766, 4779, 4280, 4391, 4891, 4636, 4546, 4683, 4181, 4081, 4862, 4458, 4037, 4321, 4786, 4717, 4628, 4154, 4326, 4032, 4873, 4151, 4905, 4270, 4156, 4733, 4980, 4866, 4325, 4055, 4467, 4480, 4286, 4191, 4762, 4322, 4574, 4022, 4056, 4770, 4451, 4448, 4845, 4341, 4433, 4245, 4684, 4671, 4093, 4920, 4272, 4745, 4799, 4761, 4250, 4578, 4347, 4499, 4526, 4369, 4162, 4537, 4434, 4893, 4120, 4962, 4667, 4525, 4091, 4462, 4182, 4738, 4935, 4173, 4490, 4571, 4424, 4894, 4051, 4214, 4823, 4096, 4206, 4598, 4943, 4701, 4649, 4807, 4107, 4435, 4456, 4083, 4612, 4721, 4472, 4146, 4925, 4340, 4789, 4277, 4375, 4211, 4427, 4547, 4690, 4613, 4727, 4006, 4203, 4430, 4223, 4039, 4932, 4296, 4108, 4278, 4832, 4422, 4917, 4470, 4183, 4887, 4076, 4485, 4597, 4443, 4257, 4991, 4944, 4196, 4672, 4397, 4097, 4119, 4077, 4773, 4602, 4538, 4479, 4968, 4159, 4539, 4956, 4710, 4812, 4902, 4569, 4954, 4385, 4128, 4936, 4416, 4148, 4632, 4759, 4117, 4896, 4392, 4864, 4316, 4132, 4319, 4969, 4175, 4484, 4903, 4910, 4350, 4332, 4952, 4176, 4594, 4709, 4509, 4178, 4167, 4545, 4857, 4617, 4501, 4859, 4207, 4275, 4687, 4049, 4579, 4046, 4921, 4113, 4898, 4681, 4052, 4415, 4064, 4184, 4895, 4744, 4685, 4084, 4305, 4899, 4559, 4208, 4057, 4507, 4258, 4355, 4086, 4373, 4323, 4541, 4297, 4483, 4889, 4531, 4327, 4441, 4914, 4303, 4677, 4445, 4802, 4343, 4585, 4338, 4524, 4590, 4624, 4288, 4704, 4134, 4043, 4720, 4058, 4328, 4095, 4026, 4423, 4657, 4118, 4633, 4487, 4822, 4904, 4255, 4001, 4387, 4500, 4190, 4686, 4995, 4661, 4783, 4992, 4165, 4065, 4927, 4306, 4856, 4292, 4420, 4963, 4468, 4240, 4724, 4432, 4447, 4518, 4028, 4670, 4339, 4771, 4018, 4489, 4110, 4708, 4945, 4136, 4492, 4930, 4090, 4734, 4886, 4542, 4227, 4486, 4491, 4713, 4986, 4068, 4048, 4975, 4570, 4842, 4475, 4131, 4555, 4428, 4776, 4101, 4273, 4811, 4345, 5000, 4653, 4256, 4209, 4769, 4946, 4561, 4080, 4461, 4820, 4311, 4959, 4750, 4795, 4748, 4368, 4506, 4335, 4346, 4568, 4675, 4692, 4774, 4413, 4370, 4723, 4521, 4885, 4678, 4897, 4066, 4674, 4106, 4626, 4389, 4204, 4839, 4023, 4712, 4145, 4035, 4357, 4756, 4648, 4972, 4157, 4406, 4615, 4061, 4219, 4791, 4660, 4073, 4356, 4072, 4599, 4359, 4094, 4673, 4696, 4796, 4282, 4714, 4522, 4736, 4775, 4760, 4400, 4847, 4228, 4803, 4908, 4732, 4645, 4122, 4218, 4478, 4941, 4892, 4364, 4403, 4152, 4444, 4360, 4354, 4241, 4494, 4367, 4808, 4261, 4088, 4573, 4554, 4248, 4371, 4393, 4268, 4201, 4038, 4788, 4593, 4040, 4801, 4582, 4309, 4976, 4374, 4869, 4380, 4514, 4243, 4362, 4849, 4680, 4888, 4764, 4618, 4838, 4828, 4643, 4010, 4827, 4957, 4099, 4875, 4843, 4737, 4102, 4979, 4011, 4504, 4440, 4746, 4557, 4426, 4553, 4656, 4868, 4689, 4988, 4703, 4967, 4069, 4619, 4334, 4669, 4785, 4464, 4562, 4961, 4625, 4754, 4797, 4481, 4705, 4199, 4337, 4062, 4138, 4702, 4534, 4168, 4418, 4092, 4682, 4520, 4030, 4171, 4650, 4858, 4411, 4999, 4252, 4197, 4170, 4942, 4631, 4990, 4179, 4285, 4700, 4482, 4575, 4800, 4070, 4251, 4344, 4982, 4719, 4390, 4149, 4100, 4194, 4269, 4855, 4314, 4718, 4232, 4730, 4438, 4588, 4195, 4192, 4493, 4517, 4833, 4234, 4989, 4315, 4844, 4142, 4408, 4584, 4425]
+a2 = [5650, 6274, 5600, 6197, 6324, 5850, 5630, 5955, 6343, 6233, 6065, 5637, 5561, 6500, 5565, 5845, 5916, 6229, 5857, 5747, 6419, 5936, 6363, 5773, 6399, 6350, 6172, 6494, 6042, 6013, 6132, 5887, 6215, 5837, 5663, 5695, 6453, 5698, 5941, 6186, 5902, 6116, 6487, 5945, 5694, 6392, 5605, 5524, 5884, 6470, 5503, 6458, 5910, 6469, 5645, 5540, 5505, 6136, 5715, 6306, 6164, 6406, 6120, 5919, 5592, 5595, 5684, 6464, 5958, 6060, 5862, 5672, 5670, 6211, 6321, 5654, 5516, 6278, 6084, 5867, 5577, 6379, 6139, 6472, 6251, 6460, 5831, 6133, 5772, 5788, 6260, 5580, 5912, 5865, 5616, 6153, 5567, 5709, 5963, 6489, 6344, 6113, 6409, 5987, 6141, 5508, 6093, 5723, 5883, 5829, 6086, 5774, 6026, 5601, 5859, 5517, 6252, 6412, 6481, 5828, 5556, 6234, 6416, 5562, 5992, 6045, 5559, 6309, 6109, 6273, 6407, 5743, 6338, 5706, 5719, 6430, 5693, 6247, 6450, 5710, 6015, 6429, 5607, 6056, 6495, 5613, 6370, 5671, 5751, 6237, 5748, 6217, 5977, 6194, 5511, 5599, 5624, 5923, 6452, 5841, 5798, 6025, 5879, 6420, 6177, 6294, 5871, 6105, 5822, 5770, 5724, 5754, 6063, 6291, 5529, 5921, 6018, 5856, 6058, 6372, 6361, 5889, 5899, 5555, 6454, 5960, 6411, 5512, 6069, 5913, 5502, 5821, 5965, 6475, 5697, 5523, 5676, 6076, 5648, 5769, 5948, 6493, 5683, 6200, 5651, 5653, 5885, 5667, 6404, 6432, 6226, 6102, 6213, 5796, 6462, 5811, 5764, 6100, 6073, 6117, 6147, 6373, 5777, 6221, 6184, 5553, 5731, 5536, 6288, 6204, 5586, 5707, 5753, 6362, 5602, 5924, 6231, 5832, 6264, 5968, 5597, 6467, 5946, 6212, 6275, 5509, 6156, 5582, 5816, 5909, 5791, 5952, 6442, 6474, 6023, 5939, 5649, 5531, 6259, 5994, 6388, 5776, 5641, 6068, 6477, 6220, 6286, 5897, 5873, 6381, 6339, 5652, 5589, 6302, 6227, 5544, 5793, 5892, 6488, 5506, 5876, 5781, 5576, 5521, 6331, 6131, 5617, 6332, 5801, 6107, 6463, 6457, 5802, 5737, 6104, 5550, 6253, 6368, 6050, 5766, 5534, 6224, 6401, 6303, 5786, 5735, 6282, 5596, 6459, 6122, 6492, 5854, 5988, 5549, 6318, 5840, 6178, 5640, 5752, 6040, 5665, 5755, 5535, 5721, 6088, 5914, 5689, 6256, 5838, 6021, 5674, 6028, 6223, 6189, 5886, 6232, 5878, 6424, 6413, 6482, 6155, 5638, 6160, 6440, 5571, 6037, 6323, 5959, 6468, 5826, 5682, 6327, 5514, 6390, 5510, 5870, 6108, 5722, 5934, 5998, 6402, 6348, 5718, 6471, 5942, 6029, 6185, 5926, 6386, 5940, 6443, 6230, 5855, 6349, 6059, 6276, 5740, 5996, 6238, 6287, 5812, 5578, 5658, 5525, 6380, 6095, 6112, 5925, 6246, 5985, 5692, 6261, 5734, 6337, 5966, 6004, 6151, 6161, 5917, 5863, 6300, 5732, 5547, 5851, 6295, 5787, 5864, 5545, 6356, 6175, 6154, 5680, 5799, 5500, 5969, 6301, 5622, 6071, 6030, 5655, 6299, 5519, 5818, 6064, 6054, 5646, 6166, 6272, 5610, 5705, 5956, 5820, 5920, 5581, 6268, 6027, 6074, 6087, 5668, 5794, 5880, 6173, 6434, 6374, 6008, 5807, 5739, 6307, 6437, 5619, 6451, 5618, 5628, 5932, 6235, 6190, 6225, 5629, 5911, 6257, 6410, 6304, 6140, 6395, 5817, 6284, 5927, 6010, 5639, 5758, 6098, 6051, 6239, 5979, 6281, 6417, 5903, 5675, 6456, 5795, 5527, 6242, 6387, 6090, 5623, 5890, 6322, 6418, 6110, 6254, 5620, 5537, 5573, 6359, 5612, 6325, 5513, 6044, 5918, 6473, 6148, 6341, 5543, 6448, 6101, 6280, 6222, 6438, 5981, 6152, 5532, 5626, 6491, 5591, 6170, 5953, 6115, 5744, 6179, 5632, 5861, 6421, 6377, 6245, 5852, 5835, 5625, 6289, 5657, 6111, 5768, 5504, 5741, 5606, 6480, 6167, 6096, 6005, 5522, 5974, 6435, 5643, 6290, 5780, 6444, 6083, 5989, 5893, 5539, 6347, 6016, 6210, 6391, 5789, 5967, 5778, 6035, 6476, 5836, 5702, 6003, 5881, 5714, 6002, 6024, 6203, 6119, 5656, 5691, 5944, 5935, 6046, 5763, 6032, 6266, 6250, 5997, 6207, 6092, 6103, 6043, 5999, 5725, 5552, 6007, 6314, 6159, 5844, 5633, 6269, 5720, 5961, 5583, 6446, 5877, 6171, 6199, 6315, 6271, 5756, 6497, 6383, 5704, 5585, 6144, 6384, 6426, 6285, 5611, 6439, 6351, 5574, 5609, 5905, 5538, 5824, 6149, 6036, 5728, 5515, 5929, 6422, 5644, 6366, 5900, 6354, 6121, 5669, 6394, 5703, 5978, 6022, 6085, 5604, 6436, 5688, 6079, 5767, 6378, 5541, 6398, 6265, 6174, 5809, 5819, 6428, 6163, 5660, 6342, 6097, 6128, 6114, 6183, 5685, 5711, 6277, 6089, 5584, 6201, 6305, 6427, 5975, 5642, 6048, 6091, 6130, 5673, 5621, 5993, 5528, 6353, 6345, 6241, 6041, 6137, 6019, 5810, 6385, 6000, 6169, 6298, 6078, 5699, 6358, 5588, 5546, 5678, 5627, 6106, 5785, 6055, 6425, 5906, 5928, 6415, 6182, 6075, 5962, 6052, 6382, 6145, 6129, 6498, 5904, 5779, 5520, 5784, 5783, 6334, 5970, 6205, 5847, 6441, 6066, 6365, 6176, 5849, 6371, 6326, 5686, 5708, 6180, 5814, 5636, 6431, 6405, 6070, 5869, 6077, 5738, 6080, 6496, 5950, 5806, 5782, 5827, 5896, 5598, 5746, 6014, 5742, 6465, 6123, 5964, 6038, 6218, 6020, 5727, 5888, 5530, 6389, 6061, 6483, 6031, 5901, 6393, 6466, 6320, 5666, 5805, 6168, 5986, 5833, 6143, 6181, 5635, 5681, 6447, 6047, 5570, 5898, 5560, 5931, 6126, 6053, 5823, 5566, 5526, 5858, 5548, 6209, 6336, 6011, 5587, 5677, 6082, 5891, 5839, 5874, 5579, 6214, 6397, 5568, 6263, 5991, 5972, 6081, 6490, 6267, 6310, 6248, 5937, 6216, 6333, 5608, 5875, 5551, 6445, 5983, 5848, 5954, 6262, 5762, 6146, 6191, 6206, 6355, 6244, 5868, 5980, 6423, 5922, 6099, 5933, 5614, 5713, 6317, 6312, 5984, 6255, 6187, 6162, 5930, 5690, 5813, 6192, 6400, 5533, 5973, 6150, 6308, 6313, 6125, 6124, 5733, 5951, 5957, 5662, 5765, 5501, 5894, 5797, 5729, 5730, 6403, 6033, 6455, 5895, 6017, 5712, 6219, 5615, 6208, 6198, 6157, 5634, 6408, 5947, 5745, 5971, 6228, 6296, 5843, 5804, 6293, 6202, 5716, 5846, 6461, 5569, 6006, 5603, 6135, 6360, 5717, 6193, 5792, 5775, 5507, 6243, 5872, 6499, 5736, 6158, 6340, 5995, 6311, 6258, 5938, 6479, 5572, 5882, 6195, 6297, 5943, 5825, 6328, 6330, 5679, 6319, 6236, 6485, 6414, 5908, 6001, 5558, 6396, 6486, 5757, 5803, 5700, 5593, 5866, 6433, 5726, 6240, 5830, 6449, 5575, 6478, 5564, 5915, 6034, 6072, 6484, 6375, 5976, 5631, 6138, 5659, 6346, 6118, 6279, 5554, 6283, 5800, 5594, 5701, 6292, 5842, 5518, 6335, 5750, 6196, 5749, 6329, 6369, 5760, 6134, 5661, 6188, 5542, 6127, 6062, 6352, 6270, 5761, 6165, 6376, 6049, 5687, 6364, 5696, 6367, 5990, 5771, 6057, 6094, 5815, 6039, 5759, 5949, 5563, 5590, 5853, 6009, 5907, 5834, 5982, 5664, 6316, 5557, 6067, 6249, 6142, 6357, 5790, 5647, 5808, 5860, 6012]
+
+1000.times do
+  x = a1 & a2
+  y = a2 & a1
+end
diff --git a/benchmark/bm_array_intersection_objects.rb b/benchmark/bm_array_intersection_objects.rb
new file mode 100644
index 00000000..90c9dbed
--- /dev/null
+++ b/benchmark/bm_array_intersection_objects.rb
@@ -0,0 +1,7 @@
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new file mode 100644
index 00000000..deafb427
--- /dev/null
+++ b/benchmark/bm_array_intersection_strings.rb
@@ -0,0 +1,7 @@
+a1 = ['4768', '4964', '4266', '4872', '4231', '4017', '4565', '4793', '4298', '4135', '4639', '4780', '4237', '4548', '4655', '4153', '4654', '4922', '4563', '4042', '4329', '4699', '4352', '4127', '4544', '4906', '4814', '4948', '4977', '4830', '4405', '4642', '4666', '4402', '4679', '4465', '4401', '4155', '4767', '4510', '4747', '4993', '4508', '4697', '4758', '4133', '4348', '4200', '4442', '4970', '4452', '4041', '4103', '4567', '4937', '4047', '4933', '4121', '4860', '4659', '4221', '4312', '4583', '4473', '4973', '4262', '4630', '4123', '4139', '4289', '4147', '4222', '4050', '4019', '4454', '4253', '4552', '4947', '4725', '4457', '4929', '4021', '4502', '4307', '4576', '4124', '4586', '4610', '4027', '4572', '4926', '4753', '4185', '4382', '4394', '4923', '4186', '4254', '4012', '4417', '4556', '4349', '4550', '4330', '4938', '4985', '4778', '4716', '4924', '4045', '4358', '4189', '4591', '4213', '4851', '4825', '4260', '4198', '4342', '4824', '4333', '4244', '4752', '4994', '4488', '4532', '4082', '4595', '4098', '4436', '4540', '4267', '4407', '4998', '4751', '4535', '4861', '4819', '4419', '4031', '4029', '4453', '4698', '4965', '4450', '4668', '4036', '4300', '4519', '4281', '4981', '4818', '4939', '4378', '4140', '4841', '4249', '4290', '4388', '4878', '4884', '4235', '4515', '4638', '4410', '4054', '4383', '4238', '4870', '4295', '4804', '4308', '4614', '4105', '4053', '4446', '4757', '4971', '4637', '4831', '4193', '4912', '4000', '4187', '4606', '4566', '4169', '4641', '4749', '4729', '4928', '4601', '4949', '4210', '4313', '4647', '4495', '4460', '4621', '4605', '4694', '4317', '4226', '4263', '4016', '4997', '4940', '4715', '4907', '4620', '4934', '4996', '4955', '4688', '4304', '4220', '4882', '4772', '4536', '4815', '4693', '4469', '4276', '4409', '4071', '4224', '4020', '4629', '4865', '4813', '4366', '4622', '4129', '4533', '4634', '4564', '4087', '4386', '4161', '4265', '4711', '4009', '4376', '4781', '4837', '4112', '4915', '4592', '4658', '4025', '4987', '4291', '4477', '4503', '4437', '4111', '4707', '4879', '4611', '4549', '4078', '4044', '4853', '4835', '4463', '4577', '4008', '4233', '4741', '4384', '4225', '4024', '4726', '4743', '4160', '4180', '4722', '4609', '4114', '4834', '4742', '4662', '4984', '4299', '4060', '4498', '4755', '4320', '4874', '4528', '4216', '4852', '4951', '4958', '4283', '4239', '4476', '4644', '4143', '4104', '4455', '4126', '4950', '4663', '4013', '4931', '4850', '4242', '4130', '4623', '4871', '4014', '4854', '4293', '4512', '4166', '4740', '4735', '4150', '4651', '4172', '4836', '4530', '4664', '4429', '4511', '4558', '4676', '4085', '4074', '4580', '4794', '4379', '4310', '4817', '4966', '4848', '4202', '4336', '4608', '4351', '4396', '4652', '4033', '4188', '4431', '4916', '4259', '4607', '4816', '4810', '4627', '4527', '4560', '4728', '4589', '4274', '4809', '4790', '4398', '4414', '4516', '4581', '4919', '4665', '4331', '4978', '4543', '4877', '4974', '4284', '4004', '4177', '4466', '4116', '4217', '4901', '4372', '4137', '4806', '4264', '4497', '4294', '4787', '4212', '4215', '4115', '4782', '4739', '4821', '4125', '4505', '4230', '4399', '4395', '4079', '4867', '4381', '4706', '4695', '4404', '4691', '4075', '4353', '4301', '4876', '4731', '4523', '4246', '4529', '4412', '4784', '4449', '4229', '4616', '4158', '4002', '4318', '4377', '4205', '4911', '4777', '4792', '4271', '4763', '4141', '4287', '4890', '4279', '4829', '4646', '4840', '4089', '4880', '4067', '4918', '4059', '4109', '4164', '4863', '4883', '4909', '4361', '4174', '4960', '4302', '4003', '4236', '4846', '4034', '4324', '4513', '4765', '4596', '4900', '4007', '4603', '4474', '4439', '4805', '4015', '4496', '4953', '4363', '4551', '4459', '4063', '4983', '4881', '4365', '4604', '4587', '4798', '4005', '4163', '4421', '4471', '4826', '4144', '4635', '4600', '4913', '4640', '4247', '4766', '4779', '4280', '4391', '4891', '4636', '4546', '4683', '4181', '4081', '4862', '4458', '4037', '4321', '4786', '4717', '4628', '4154', '4326', '4032', '4873', '4151', '4905', '4270', '4156', '4733', '4980', '4866', '4325', '4055', '4467', '4480', '4286', '4191', '4762', '4322', '4574', '4022', '4056', '4770', '4451', '4448', '4845', '4341', '4433', '4245', '4684', '4671', '4093', '4920', '4272', '4745', '4799', '4761', '4250', '4578', '4347', '4499', '4526', '4369', '4162', '4537', '4434', '4893', '4120', '4962', '4667', '4525', '4091', '4462', '4182', '4738', '4935', '4173', '4490', '4571', '4424', '4894', '4051', '4214', '4823', '4096', '4206', '4598', '4943', '4701', '4649', '4807', '4107', '4435', '4456', '4083', '4612', '4721', '4472', '4146', '4925', '4340', '4789', '4277', '4375', '4211', '4427', '4547', '4690', '4613', '4727', '4006', '4203', '4430', '4223', '4039', '4932', '4296', '4108', '4278', '4832', '4422', '4917', '4470', '4183', '4887', '4076', '4485', '4597', '4443', '4257', '4991', '4944', '4196', '4672', '4397', '4097', '4119', '4077', '4773', '4602', '4538', '4479', '4968', '4159', '4539', '4956', '4710', '4812', '4902', '4569', '4954', '4385', '4128', '4936', '4416', '4148', '4632', '4759', '4117', '4896', '4392', '4864', '4316', '4132', '4319', '4969', '4175', '4484', '4903', '4910', '4350', '4332', '4952', '4176', '4594', '4709', '4509', '4178', '4167', '4545', '4857', '4617', '4501', '4859', '4207', '4275', '4687', '4049', '4579', '4046', '4921', '4113', '4898', '4681', '4052', '4415', '4064', '4184', '4895', '4744', '4685', '4084', '4305', '4899', '4559', '4208', '4057', '4507', '4258', '4355', '4086', '4373', '4323', '4541', '4297', '4483', '4889', '4531', '4327', '4441', '4914', '4303', '4677', '4445', '4802', '4343', '4585', '4338', '4524', '4590', '4624', '4288', '4704', '4134', '4043', '4720', '4058', '4328', '4095', '4026', '4423', '4657', '4118', '4633', '4487', '4822', '4904', '4255', '4001', '4387', '4500', '4190', '4686', '4995', '4661', '4783', '4992', '4165', '4065', '4927', '4306', '4856', '4292', '4420', '4963', '4468', '4240', '4724', '4432', '4447', '4518', '4028', '4670', '4339', '4771', '4018', '4489', '4110', '4708', '4945', '4136', '4492', '4930', '4090', '4734', '4886', '4542', '4227', '4486', '4491', '4713', '4986', '4068', '4048', '4975', '4570', '4842', '4475', '4131', '4555', '4428', '4776', '4101', '4273', '4811', '4345', '5000', '4653', '4256', '4209', '4769', '4946', '4561', '4080', '4461', '4820', '4311', '4959', '4750', '4795', '4748', '4368', '4506', '4335', '4346', '4568', '4675', '4692', '4774', '4413', '4370', '4723', '4521', '4885', '4678', '4897', '4066', '4674', '4106', '4626', '4389', '4204', '4839', '4023', '4712', '4145', '4035', '4357', '4756', '4648', '4972', '4157', '4406', '4615', '4061', '4219', '4791', '4660', '4073', '4356', '4072', '4599', '4359', '4094', '4673', '4696', '4796', '4282', '4714', '4522', '4736', '4775', '4760', '4400', '4847', '4228', '4803', '4908', '4732', '4645', '4122', '4218', '4478', '4941', '4892', '4364', '4403', '4152', '4444', '4360', '4354', '4241', '4494', '4367', '4808', '4261', '4088', '4573', '4554', '4248', '4371', '4393', '4268', '4201', '4038', '4788', '4593', '4040', '4801', '4582', '4309', '4976', '4374', '4869', '4380', '4514', '4243', '4362', '4849', '4680', '4888', '4764', '4618', '4838', '4828', '4643', '4010', '4827', '4957', '4099', '4875', '4843', '4737', '4102', '4979', '4011', '4504', '4440', '4746', '4557', '4426', '4553', '4656', '4868', '4689', '4988', '4703', '4967', '4069', '4619', '4334', '4669', '4785', '4464', '4562', '4961', '4625', '4754', '4797', '4481', '4705', '4199', '4337', '4062', '4138', '4702', '4534', '4168', '4418', '4092', '4682', '4520', '4030', '4171', '4650', '4858', '4411', '4999', '4252', '4197', '4170', '4942', '4631', '4990', '4179', '4285', '4700', '4482', '4575', '4800', '4070', '4251', '4344', '4982', '4719', '4390', '4149', '4100', '4194', '4269', '4855', '4314', '4718', '4232', '4730', '4438', '4588', '4195', '4192', '4493', '4517', '4833', '4234', '4989', '4315', '4844', '4142', '4408', '4584', '4425']
+a2 = ['5650', '6274', '5600', '6197', '6324', '5850', '5630', '5955', '6343', '6233', '6065', '5637', '5561', '6500', '5565', '5845', '5916', '6229', '5857', '5747', '6419', '5936', '6363', '5773', '6399', '6350', '6172', '6494', '6042', '6013', '6132', '5887', '6215', '5837', '5663', '5695', '6453', '5698', '5941', '6186', '5902', '6116', '6487', '5945', '5694', '6392', '5605', '5524', '5884', '6470', '5503', '6458', '5910', '6469', '5645', '5540', '5505', '6136', '5715', '6306', '6164', '6406', '6120', '5919', '5592', '5595', '5684', '6464', '5958', '6060', '5862', '5672', '5670', '6211', '6321', '5654', '5516', '6278', '6084', '5867', '5577', '6379', '6139', '6472', '6251', '6460', '5831', '6133', '5772', '5788', '6260', '5580', '5912', '5865', '5616', '6153', '5567', '5709', '5963', '6489', '6344', '6113', '6409', '5987', '6141', '5508', '6093', '5723', '5883', '5829', '6086', '5774', '6026', '5601', '5859', '5517', '6252', '6412', '6481', '5828', '5556', '6234', '6416', '5562', '5992', '6045', '5559', '6309', '6109', '6273', '6407', '5743', '6338', '5706', '5719', '6430', '5693', '6247', '6450', '5710', '6015', '6429', '5607', '6056', '6495', '5613', '6370', '5671', '5751', '6237', '5748', '6217', '5977', '6194', '5511', '5599', '5624', '5923', '6452', '5841', '5798', '6025', '5879', '6420', '6177', '6294', '5871', '6105', '5822', '5770', '5724', '5754', '6063', '6291', '5529', '5921', '6018', '5856', '6058', '6372', '6361', '5889', '5899', '5555', '6454', '5960', '6411', '5512', '6069', '5913', '5502', '5821', '5965', '6475', '5697', '5523', '5676', '6076', '5648', '5769', '5948', '6493', '5683', '6200', '5651', '5653', '5885', '5667', '6404', '6432', '6226', '6102', '6213', '5796', '6462', '5811', '5764', '6100', '6073', '6117', '6147', '6373', '5777', '6221', '6184', '5553', '5731', '5536', '6288', '6204', '5586', '5707', '5753', '6362', '5602', '5924', '6231', '5832', '6264', '5968', '5597', '6467', '5946', '6212', '6275', '5509', '6156', '5582', '5816', '5909', '5791', '5952', '6442', '6474', '6023', '5939', '5649', '5531', '6259', '5994', '6388', '5776', '5641', '6068', '6477', '6220', '6286', '5897', '5873', '6381', '6339', '5652', '5589', '6302', '6227', '5544', '5793', '5892', '6488', '5506', '5876', '5781', '5576', '5521', '6331', '6131', '5617', '6332', '5801', '6107', '6463', '6457', '5802', '5737', '6104', '5550', '6253', '6368', '6050', '5766', '5534', '6224', '6401', '6303', '5786', '5735', '6282', '5596', '6459', '6122', '6492', '5854', '5988', '5549', '6318', '5840', '6178', '5640', '5752', '6040', '5665', '5755', '5535', '5721', '6088', '5914', '5689', '6256', '5838', '6021', '5674', '6028', '6223', '6189', '5886', '6232', '5878', '6424', '6413', '6482', '6155', '5638', '6160', '6440', '5571', '6037', '6323', '5959', '6468', '5826', '5682', '6327', '5514', '6390', '5510', '5870', '6108', '5722', '5934', '5998', '6402', '6348', '5718', '6471', '5942', '6029', '6185', '5926', '6386', '5940', '6443', '6230', '5855', '6349', '6059', '6276', '5740', '5996', '6238', '6287', '5812', '5578', '5658', '5525', '6380', '6095', '6112', '5925', '6246', '5985', '5692', '6261', '5734', '6337', '5966', '6004', '6151', '6161', '5917', '5863', '6300', '5732', '5547', '5851', '6295', '5787', '5864', '5545', '6356', '6175', '6154', '5680', '5799', '5500', '5969', '6301', '5622', '6071', '6030', '5655', '6299', '5519', '5818', '6064', '6054', '5646', '6166', '6272', '5610', '5705', '5956', '5820', '5920', '5581', '6268', '6027', '6074', '6087', '5668', '5794', '5880', '6173', '6434', '6374', '6008', '5807', '5739', '6307', '6437', '5619', '6451', '5618', '5628', '5932', '6235', '6190', '6225', '5629', '5911', '6257', '6410', '6304', '6140', '6395', '5817', '6284', '5927', '6010', '5639', '5758', '6098', '6051', '6239', '5979', '6281', '6417', '5903', '5675', '6456', '5795', '5527', '6242', '6387', '6090', '5623', '5890', '6322', '6418', '6110', '6254', '5620', '5537', '5573', '6359', '5612', '6325', '5513', '6044', '5918', '6473', '6148', '6341', '5543', '6448', '6101', '6280', '6222', '6438', '5981', '6152', '5532', '5626', '6491', '5591', '6170', '5953', '6115', '5744', '6179', '5632', '5861', '6421', '6377', '6245', '5852', '5835', '5625', '6289', '5657', '6111', '5768', '5504', '5741', '5606', '6480', '6167', '6096', '6005', '5522', '5974', '6435', '5643', '6290', '5780', '6444', '6083', '5989', '5893', '5539', '6347', '6016', '6210', '6391', '5789', '5967', '5778', '6035', '6476', '5836', '5702', '6003', '5881', '5714', '6002', '6024', '6203', '6119', '5656', '5691', '5944', '5935', '6046', '5763', '6032', '6266', '6250', '5997', '6207', '6092', '6103', '6043', '5999', '5725', '5552', '6007', '6314', '6159', '5844', '5633', '6269', '5720', '5961', '5583', '6446', '5877', '6171', '6199', '6315', '6271', '5756', '6497', '6383', '5704', '5585', '6144', '6384', '6426', '6285', '5611', '6439', '6351', '5574', '5609', '5905', '5538', '5824', '6149', '6036', '5728', '5515', '5929', '6422', '5644', '6366', '5900', '6354', '6121', '5669', '6394', '5703', '5978', '6022', '6085', '5604', '6436', '5688', '6079', '5767', '6378', '5541', '6398', '6265', '6174', '5809', '5819', '6428', '6163', '5660', '6342', '6097', '6128', '6114', '6183', '5685', '5711', '6277', '6089', '5584', '6201', '6305', '6427', '5975', '5642', '6048', '6091', '6130', '5673', '5621', '5993', '5528', '6353', '6345', '6241', '6041', '6137', '6019', '5810', '6385', '6000', '6169', '6298', '6078', '5699', '6358', '5588', '5546', '5678', '5627', '6106', '5785', '6055', '6425', '5906', '5928', '6415', '6182', '6075', '5962', '6052', '6382', '6145', '6129', '6498', '5904', '5779', '5520', '5784', '5783', '6334', '5970', '6205', '5847', '6441', '6066', '6365', '6176', '5849', '6371', '6326', '5686', '5708', '6180', '5814', '5636', '6431', '6405', '6070', '5869', '6077', '5738', '6080', '6496', '5950', '5806', '5782', '5827', '5896', '5598', '5746', '6014', '5742', '6465', '6123', '5964', '6038', '6218', '6020', '5727', '5888', '5530', '6389', '6061', '6483', '6031', '5901', '6393', '6466', '6320', '5666', '5805', '6168', '5986', '5833', '6143', '6181', '5635', '5681', '6447', '6047', '5570', '5898', '5560', '5931', '6126', '6053', '5823', '5566', '5526', '5858', '5548', '6209', '6336', '6011', '5587', '5677', '6082', '5891', '5839', '5874', '5579', '6214', '6397', '5568', '6263', '5991', '5972', '6081', '6490', '6267', '6310', '6248', '5937', '6216', '6333', '5608', '5875', '5551', '6445', '5983', '5848', '5954', '6262', '5762', '6146', '6191', '6206', '6355', '6244', '5868', '5980', '6423', '5922', '6099', '5933', '5614', '5713', '6317', '6312', '5984', '6255', '6187', '6162', '5930', '5690', '5813', '6192', '6400', '5533', '5973', '6150', '6308', '6313', '6125', '6124', '5733', '5951', '5957', '5662', '5765', '5501', '5894', '5797', '5729', '5730', '6403', '6033', '6455', '5895', '6017', '5712', '6219', '5615', '6208', '6198', '6157', '5634', '6408', '5947', '5745', '5971', '6228', '6296', '5843', '5804', '6293', '6202', '5716', '5846', '6461', '5569', '6006', '5603', '6135', '6360', '5717', '6193', '5792', '5775', '5507', '6243', '5872', '6499', '5736', '6158', '6340', '5995', '6311', '6258', '5938', '6479', '5572', '5882', '6195', '6297', '5943', '5825', '6328', '6330', '5679', '6319', '6236', '6485', '6414', '5908', '6001', '5558', '6396', '6486', '5757', '5803', '5700', '5593', '5866', '6433', '5726', '6240', '5830', '6449', '5575', '6478', '5564', '5915', '6034', '6072', '6484', '6375', '5976', '5631', '6138', '5659', '6346', '6118', '6279', '5554', '6283', '5800', '5594', '5701', '6292', '5842', '5518', '6335', '5750', '6196', '5749', '6329', '6369', '5760', '6134', '5661', '6188', '5542', '6127', '6062', '6352', '6270', '5761', '6165', '6376', '6049', '5687', '6364', '5696', '6367', '5990', '5771', '6057', '6094', '5815', '6039', '5759', '5949', '5563', '5590', '5853', '6009', '5907', '5834', '5982', '5664', '6316', '5557', '6067', '6249', '6142', '6357', '5790', '5647', '5808', '5860', '6012']
+
+1000.times do
+  x = a1 & a2
+  y = a2 & a1
+end
diff --git a/benchmark/bm_array_join_ary.rb b/benchmark/bm_array_join_ary.rb
new file mode 100644
index 00000000..69403de2
--- /dev/null
+++ b/benchmark/bm_array_join_ary.rb
@@ -0,0 +1,9 @@
+a = []
+
+1000.times do |i|
+  a << [i]
+end
+
+1000.times do
+  a.join
+end
diff --git a/benchmark/bm_array_minus_numbers.rb b/benchmark/bm_array_minus_numbers.rb
new file mode 100644
index 00000000..03b9256b
--- /dev/null
+++ b/benchmark/bm_array_minus_numbers.rb
@@ -0,0 +1,7 @@
+a1 = [4768, 4964, 4266, 4872, 4231, 4017, 4565, 4793, 4298, 4135, 4639, 4780, 4237, 4548, 4655, 4153, 4654, 4922, 4563, 4042, 4329, 4699, 4352, 4127, 4544, 4906, 4814, 4948, 4977, 4830, 4405, 4642, 4666, 4402, 4679, 4465, 4401, 4155, 4767, 4510, 4747, 4993, 4508, 4697, 4758, 4133, 4348, 4200, 4442, 4970, 4452, 4041, 4103, 4567, 4937, 4047, 4933, 4121, 4860, 4659, 4221, 4312, 4583, 4473, 4973, 4262, 4630, 4123, 4139, 4289, 4147, 4222, 4050, 4019, 4454, 4253, 4552, 4947, 4725, 4457, 4929, 4021, 4502, 4307, 4576, 4124, 4586, 4610, 4027, 4572, 4926, 4753, 4185, 4382, 4394, 4923, 4186, 4254, 4012, 4417, 4556, 4349, 4550, 4330, 4938, 4985, 4778, 4716, 4924, 4045, 4358, 4189, 4591, 4213, 4851, 4825, 4260, 4198, 4342, 4824, 4333, 4244, 4752, 4994, 4488, 4532, 4082, 4595, 4098, 4436, 4540, 4267, 4407, 4998, 4751, 4535, 4861, 4819, 4419, 4031, 4029, 4453, 4698, 4965, 4450, 4668, 4036, 4300, 4519, 4281, 4981, 4818, 4939, 4378, 4140, 4841, 4249, 4290, 4388, 4878, 4884, 4235, 4515, 4638, 4410, 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4794, 4379, 4310, 4817, 4966, 4848, 4202, 4336, 4608, 4351, 4396, 4652, 4033, 4188, 4431, 4916, 4259, 4607, 4816, 4810, 4627, 4527, 4560, 4728, 4589, 4274, 4809, 4790, 4398, 4414, 4516, 4581, 4919, 4665, 4331, 4978, 4543, 4877, 4974, 4284, 4004, 4177, 4466, 4116, 4217, 4901, 4372, 4137, 4806, 4264, 4497, 4294, 4787, 4212, 4215, 4115, 4782, 4739, 4821, 4125, 4505, 4230, 4399, 4395, 4079, 4867, 4381, 4706, 4695, 4404, 4691, 4075, 4353, 4301, 4876, 4731, 4523, 4246, 4529, 4412, 4784, 4449, 4229, 4616, 4158, 4002, 4318, 4377, 4205, 4911, 4777, 4792, 4271, 4763, 4141, 4287, 4890, 4279, 4829, 4646, 4840, 4089, 4880, 4067, 4918, 4059, 4109, 4164, 4863, 4883, 4909, 4361, 4174, 4960, 4302, 4003, 4236, 4846, 4034, 4324, 4513, 4765, 4596, 4900, 4007, 4603, 4474, 4439, 4805, 4015, 4496, 4953, 4363, 4551, 4459, 4063, 4983, 4881, 4365, 4604, 4587, 4798, 4005, 4163, 4421, 4471, 4826, 4144, 4635, 4600, 4913, 4640, 4247, 4766, 4779, 4280, 4391, 4891, 4636, 4546, 4683, 4181, 4081, 4862, 4458, 4037, 4321, 4786, 4717, 4628, 4154, 4326, 4032, 4873, 4151, 4905, 4270, 4156, 4733, 4980, 4866, 4325, 4055, 4467, 4480, 4286, 4191, 4762, 4322, 4574, 4022, 4056, 4770, 4451, 4448, 4845, 4341, 4433, 4245, 4684, 4671, 4093, 4920, 4272, 4745, 4799, 4761, 4250, 4578, 4347, 4499, 4526, 4369, 4162, 4537, 4434, 4893, 4120, 4962, 4667, 4525, 4091, 4462, 4182, 4738, 4935, 4173, 4490, 4571, 4424, 4894, 4051, 4214, 4823, 4096, 4206, 4598, 4943, 4701, 4649, 4807, 4107, 4435, 4456, 4083, 4612, 4721, 4472, 4146, 4925, 4340, 4789, 4277, 4375, 4211, 4427, 4547, 4690, 4613, 4727, 4006, 4203, 4430, 4223, 4039, 4932, 4296, 4108, 4278, 4832, 4422, 4917, 4470, 4183, 4887, 4076, 4485, 4597, 4443, 4257, 4991, 4944, 4196, 4672, 4397, 4097, 4119, 4077, 4773, 4602, 4538, 4479, 4968, 4159, 4539, 4956, 4710, 4812, 4902, 4569, 4954, 4385, 4128, 4936, 4416, 4148, 4632, 4759, 4117, 4896, 4392, 4864, 4316, 4132, 4319, 4969, 4175, 4484, 4903, 4910, 4350, 4332, 4952, 4176, 4594, 4709, 4509, 4178, 4167, 4545, 4857, 4617, 4501, 4859, 4207, 4275, 4687, 4049, 4579, 4046, 4921, 4113, 4898, 4681, 4052, 4415, 4064, 4184, 4895, 4744, 4685, 4084, 4305, 4899, 4559, 4208, 4057, 4507, 4258, 4355, 4086, 4373, 4323, 4541, 4297, 4483, 4889, 4531, 4327, 4441, 4914, 4303, 4677, 4445, 4802, 4343, 4585, 4338, 4524, 4590, 4624, 4288, 4704, 4134, 4043, 4720, 4058, 4328, 4095, 4026, 4423, 4657, 4118, 4633, 4487, 4822, 4904, 4255, 4001, 4387, 4500, 4190, 4686, 4995, 4661, 4783, 4992, 4165, 4065, 4927, 4306, 4856, 4292, 4420, 4963, 4468, 4240, 4724, 4432, 4447, 4518, 4028, 4670, 4339, 4771, 4018, 4489, 4110, 4708, 4945, 4136, 4492, 4930, 4090, 4734, 4886, 4542, 4227, 4486, 4491, 4713, 4986, 4068, 4048, 4975, 4570, 4842, 4475, 4131, 4555, 4428, 4776, 4101, 4273, 4811, 4345, 5000, 4653, 4256, 4209, 4769, 4946, 4561, 4080, 4461, 4820, 4311, 4959, 4750, 4795, 4748, 4368, 4506, 4335, 4346, 4568, 4675, 4692, 4774, 4413, 4370, 4723, 4521, 4885, 4678, 4897, 4066, 4674, 4106, 4626, 4389, 4204, 4839, 4023, 4712, 4145, 4035, 4357, 4756, 4648, 4972, 4157, 4406, 4615, 4061, 4219, 4791, 4660, 4073, 4356, 4072, 4599, 4359, 4094, 4673, 4696, 4796, 4282, 4714, 4522, 4736, 4775, 4760, 4400, 4847, 4228, 4803, 4908, 4732, 4645, 4122, 4218, 4478, 4941, 4892, 4364, 4403, 4152, 4444, 4360, 4354, 4241, 4494, 4367, 4808, 4261, 4088, 4573, 4554, 4248, 4371, 4393, 4268, 4201, 4038, 4788, 4593, 4040, 4801, 4582, 4309, 4976, 4374, 4869, 4380, 4514, 4243, 4362, 4849, 4680, 4888, 4764, 4618, 4838, 4828, 4643, 4010, 4827, 4957, 4099, 4875, 4843, 4737, 4102, 4979, 4011, 4504, 4440, 4746, 4557, 4426, 4553, 4656, 4868, 4689, 4988, 4703, 4967, 4069, 4619, 4334, 4669, 4785, 4464, 4562, 4961, 4625, 4754, 4797, 4481, 4705, 4199, 4337, 4062, 4138, 4702, 4534, 4168, 4418, 4092, 4682, 4520, 4030, 4171, 4650, 4858, 4411, 4999, 4252, 4197, 4170, 4942, 4631, 4990, 4179, 4285, 4700, 4482, 4575, 4800, 4070, 4251, 4344, 4982, 4719, 4390, 4149, 4100, 4194, 4269, 4855, 4314, 4718, 4232, 4730, 4438, 4588, 4195, 4192, 4493, 4517, 4833, 4234, 4989, 4315, 4844, 4142, 4408, 4584, 4425]
+a2 = [5650, 6274, 5600, 6197, 6324, 5850, 5630, 5955, 6343, 6233, 6065, 5637, 5561, 6500, 5565, 5845, 5916, 6229, 5857, 5747, 6419, 5936, 6363, 5773, 6399, 6350, 6172, 6494, 6042, 6013, 6132, 5887, 6215, 5837, 5663, 5695, 6453, 5698, 5941, 6186, 5902, 6116, 6487, 5945, 5694, 6392, 5605, 5524, 5884, 6470, 5503, 6458, 5910, 6469, 5645, 5540, 5505, 6136, 5715, 6306, 6164, 6406, 6120, 5919, 5592, 5595, 5684, 6464, 5958, 6060, 5862, 5672, 5670, 6211, 6321, 5654, 5516, 6278, 6084, 5867, 5577, 6379, 6139, 6472, 6251, 6460, 5831, 6133, 5772, 5788, 6260, 5580, 5912, 5865, 5616, 6153, 5567, 5709, 5963, 6489, 6344, 6113, 6409, 5987, 6141, 5508, 6093, 5723, 5883, 5829, 6086, 5774, 6026, 5601, 5859, 5517, 6252, 6412, 6481, 5828, 5556, 6234, 6416, 5562, 5992, 6045, 5559, 6309, 6109, 6273, 6407, 5743, 6338, 5706, 5719, 6430, 5693, 6247, 6450, 5710, 6015, 6429, 5607, 6056, 6495, 5613, 6370, 5671, 5751, 6237, 5748, 6217, 5977, 6194, 5511, 5599, 5624, 5923, 6452, 5841, 5798, 6025, 5879, 6420, 6177, 6294, 5871, 6105, 5822, 5770, 5724, 5754, 6063, 6291, 5529, 5921, 6018, 5856, 6058, 6372, 6361, 5889, 5899, 5555, 6454, 5960, 6411, 5512, 6069, 5913, 5502, 5821, 5965, 6475, 5697, 5523, 5676, 6076, 5648, 5769, 5948, 6493, 5683, 6200, 5651, 5653, 5885, 5667, 6404, 6432, 6226, 6102, 6213, 5796, 6462, 5811, 5764, 6100, 6073, 6117, 6147, 6373, 5777, 6221, 6184, 5553, 5731, 5536, 6288, 6204, 5586, 5707, 5753, 6362, 5602, 5924, 6231, 5832, 6264, 5968, 5597, 6467, 5946, 6212, 6275, 5509, 6156, 5582, 5816, 5909, 5791, 5952, 6442, 6474, 6023, 5939, 5649, 5531, 6259, 5994, 6388, 5776, 5641, 6068, 6477, 6220, 6286, 5897, 5873, 6381, 6339, 5652, 5589, 6302, 6227, 5544, 5793, 5892, 6488, 5506, 5876, 5781, 5576, 5521, 6331, 6131, 5617, 6332, 5801, 6107, 6463, 6457, 5802, 5737, 6104, 5550, 6253, 6368, 6050, 5766, 5534, 6224, 6401, 6303, 5786, 5735, 6282, 5596, 6459, 6122, 6492, 5854, 5988, 5549, 6318, 5840, 6178, 5640, 5752, 6040, 5665, 5755, 5535, 5721, 6088, 5914, 5689, 6256, 5838, 6021, 5674, 6028, 6223, 6189, 5886, 6232, 5878, 6424, 6413, 6482, 6155, 5638, 6160, 6440, 5571, 6037, 6323, 5959, 6468, 5826, 5682, 6327, 5514, 6390, 5510, 5870, 6108, 5722, 5934, 5998, 6402, 6348, 5718, 6471, 5942, 6029, 6185, 5926, 6386, 5940, 6443, 6230, 5855, 6349, 6059, 6276, 5740, 5996, 6238, 6287, 5812, 5578, 5658, 5525, 6380, 6095, 6112, 5925, 6246, 5985, 5692, 6261, 5734, 6337, 5966, 6004, 6151, 6161, 5917, 5863, 6300, 5732, 5547, 5851, 6295, 5787, 5864, 5545, 6356, 6175, 6154, 5680, 5799, 5500, 5969, 6301, 5622, 6071, 6030, 5655, 6299, 5519, 5818, 6064, 6054, 5646, 6166, 6272, 5610, 5705, 5956, 5820, 5920, 5581, 6268, 6027, 6074, 6087, 5668, 5794, 5880, 6173, 6434, 6374, 6008, 5807, 5739, 6307, 6437, 5619, 6451, 5618, 5628, 5932, 6235, 6190, 6225, 5629, 5911, 6257, 6410, 6304, 6140, 6395, 5817, 6284, 5927, 6010, 5639, 5758, 6098, 6051, 6239, 5979, 6281, 6417, 5903, 5675, 6456, 5795, 5527, 6242, 6387, 6090, 5623, 5890, 6322, 6418, 6110, 6254, 5620, 5537, 5573, 6359, 5612, 6325, 5513, 6044, 5918, 6473, 6148, 6341, 5543, 6448, 6101, 6280, 6222, 6438, 5981, 6152, 5532, 5626, 6491, 5591, 6170, 5953, 6115, 5744, 6179, 5632, 5861, 6421, 6377, 6245, 5852, 5835, 5625, 6289, 5657, 6111, 5768, 5504, 5741, 5606, 6480, 6167, 6096, 6005, 5522, 5974, 6435, 5643, 6290, 5780, 6444, 6083, 5989, 5893, 5539, 6347, 6016, 6210, 6391, 5789, 5967, 5778, 6035, 6476, 5836, 5702, 6003, 5881, 5714, 6002, 6024, 6203, 6119, 5656, 5691, 5944, 5935, 6046, 5763, 6032, 6266, 6250, 5997, 6207, 6092, 6103, 6043, 5999, 5725, 5552, 6007, 6314, 6159, 5844, 5633, 6269, 5720, 5961, 5583, 6446, 5877, 6171, 6199, 6315, 6271, 5756, 6497, 6383, 5704, 5585, 6144, 6384, 6426, 6285, 5611, 6439, 6351, 5574, 5609, 5905, 5538, 5824, 6149, 6036, 5728, 5515, 5929, 6422, 5644, 6366, 5900, 6354, 6121, 5669, 6394, 5703, 5978, 6022, 6085, 5604, 6436, 5688, 6079, 5767, 6378, 5541, 6398, 6265, 6174, 5809, 5819, 6428, 6163, 5660, 6342, 6097, 6128, 6114, 6183, 5685, 5711, 6277, 6089, 5584, 6201, 6305, 6427, 5975, 5642, 6048, 6091, 6130, 5673, 5621, 5993, 5528, 6353, 6345, 6241, 6041, 6137, 6019, 5810, 6385, 6000, 6169, 6298, 6078, 5699, 6358, 5588, 5546, 5678, 5627, 6106, 5785, 6055, 6425, 5906, 5928, 6415, 6182, 6075, 5962, 6052, 6382, 6145, 6129, 6498, 5904, 5779, 5520, 5784, 5783, 6334, 5970, 6205, 5847, 6441, 6066, 6365, 6176, 5849, 6371, 6326, 5686, 5708, 6180, 5814, 5636, 6431, 6405, 6070, 5869, 6077, 5738, 6080, 6496, 5950, 5806, 5782, 5827, 5896, 5598, 5746, 6014, 5742, 6465, 6123, 5964, 6038, 6218, 6020, 5727, 5888, 5530, 6389, 6061, 6483, 6031, 5901, 6393, 6466, 6320, 5666, 5805, 6168, 5986, 5833, 6143, 6181, 5635, 5681, 6447, 6047, 5570, 5898, 5560, 5931, 6126, 6053, 5823, 5566, 5526, 5858, 5548, 6209, 6336, 6011, 5587, 5677, 6082, 5891, 5839, 5874, 5579, 6214, 6397, 5568, 6263, 5991, 5972, 6081, 6490, 6267, 6310, 6248, 5937, 6216, 6333, 5608, 5875, 5551, 6445, 5983, 5848, 5954, 6262, 5762, 6146, 6191, 6206, 6355, 6244, 5868, 5980, 6423, 5922, 6099, 5933, 5614, 5713, 6317, 6312, 5984, 6255, 6187, 6162, 5930, 5690, 5813, 6192, 6400, 5533, 5973, 6150, 6308, 6313, 6125, 6124, 5733, 5951, 5957, 5662, 5765, 5501, 5894, 5797, 5729, 5730, 6403, 6033, 6455, 5895, 6017, 5712, 6219, 5615, 6208, 6198, 6157, 5634, 6408, 5947, 5745, 5971, 6228, 6296, 5843, 5804, 6293, 6202, 5716, 5846, 6461, 5569, 6006, 5603, 6135, 6360, 5717, 6193, 5792, 5775, 5507, 6243, 5872, 6499, 5736, 6158, 6340, 5995, 6311, 6258, 5938, 6479, 5572, 5882, 6195, 6297, 5943, 5825, 6328, 6330, 5679, 6319, 6236, 6485, 6414, 5908, 6001, 5558, 6396, 6486, 5757, 5803, 5700, 5593, 5866, 6433, 5726, 6240, 5830, 6449, 5575, 6478, 5564, 5915, 6034, 6072, 6484, 6375, 5976, 5631, 6138, 5659, 6346, 6118, 6279, 5554, 6283, 5800, 5594, 5701, 6292, 5842, 5518, 6335, 5750, 6196, 5749, 6329, 6369, 5760, 6134, 5661, 6188, 5542, 6127, 6062, 6352, 6270, 5761, 6165, 6376, 6049, 5687, 6364, 5696, 6367, 5990, 5771, 6057, 6094, 5815, 6039, 5759, 5949, 5563, 5590, 5853, 6009, 5907, 5834, 5982, 5664, 6316, 5557, 6067, 6249, 6142, 6357, 5790, 5647, 5808, 5860, 6012]
+
+1000.times do
+  x = a1 - a2
+  y = a2 - a1
+end
diff --git a/benchmark/bm_array_minus_objects.rb b/benchmark/bm_array_minus_objects.rb
new file mode 100644
index 00000000..2ac89b30
--- /dev/null
+++ b/benchmark/bm_array_minus_objects.rb
@@ -0,0 +1,7 @@
+a1 = [Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, 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'4488', '4532', '4082', '4595', '4098', '4436', '4540', '4267', '4407', '4998', '4751', '4535', '4861', '4819', '4419', '4031', '4029', '4453', '4698', '4965', '4450', '4668', '4036', '4300', '4519', '4281', '4981', '4818', '4939', '4378', '4140', '4841', '4249', '4290', '4388', '4878', '4884', '4235', '4515', '4638', '4410', '4054', '4383', '4238', '4870', '4295', '4804', '4308', '4614', '4105', '4053', '4446', '4757', '4971', '4637', '4831', '4193', '4912', '4000', '4187', '4606', '4566', '4169', '4641', '4749', '4729', '4928', '4601', '4949', '4210', '4313', '4647', '4495', '4460', '4621', '4605', '4694', '4317', '4226', '4263', '4016', '4997', '4940', '4715', '4907', '4620', '4934', '4996', '4955', '4688', '4304', '4220', '4882', '4772', '4536', '4815', '4693', '4469', '4276', '4409', '4071', '4224', '4020', '4629', '4865', '4813', '4366', '4622', '4129', '4533', '4634', '4564', '4087', '4386', '4161', '4265', '4711', '4009', '4376', '4781', '4837', '4112', '4915', '4592', '4658', '4025', '4987', '4291', '4477', '4503', '4437', '4111', '4707', '4879', '4611', '4549', '4078', '4044', '4853', '4835', '4463', '4577', '4008', '4233', '4741', '4384', '4225', '4024', '4726', '4743', '4160', '4180', '4722', '4609', '4114', '4834', '4742', '4662', '4984', '4299', '4060', '4498', '4755', '4320', '4874', '4528', '4216', '4852', '4951', '4958', '4283', '4239', '4476', '4644', '4143', '4104', '4455', '4126', '4950', '4663', '4013', '4931', '4850', '4242', '4130', '4623', '4871', '4014', '4854', '4293', '4512', '4166', '4740', '4735', '4150', '4651', '4172', '4836', '4530', '4664', '4429', '4511', '4558', '4676', '4085', '4074', '4580', '4794', '4379', '4310', '4817', '4966', '4848', '4202', '4336', '4608', '4351', '4396', '4652', '4033', '4188', '4431', '4916', '4259', '4607', '4816', '4810', '4627', '4527', '4560', '4728', '4589', '4274', '4809', '4790', '4398', '4414', '4516', '4581', '4919', '4665', '4331', '4978', '4543', '4877', '4974', '4284', '4004', '4177', '4466', '4116', '4217', '4901', '4372', '4137', '4806', '4264', '4497', '4294', '4787', '4212', '4215', '4115', '4782', '4739', '4821', '4125', '4505', '4230', '4399', '4395', '4079', '4867', '4381', '4706', '4695', '4404', '4691', '4075', '4353', '4301', '4876', '4731', '4523', '4246', '4529', '4412', '4784', '4449', '4229', '4616', '4158', '4002', '4318', '4377', '4205', '4911', '4777', '4792', '4271', '4763', '4141', '4287', '4890', '4279', '4829', '4646', '4840', '4089', '4880', '4067', '4918', '4059', '4109', '4164', '4863', '4883', '4909', '4361', '4174', '4960', '4302', '4003', '4236', '4846', '4034', '4324', '4513', '4765', '4596', '4900', '4007', '4603', '4474', '4439', '4805', '4015', '4496', '4953', '4363', '4551', '4459', '4063', '4983', '4881', '4365', '4604', '4587', '4798', '4005', '4163', '4421', '4471', '4826', '4144', '4635', '4600', '4913', '4640', '4247', '4766', '4779', '4280', '4391', '4891', '4636', '4546', '4683', '4181', '4081', '4862', '4458', '4037', '4321', '4786', '4717', '4628', '4154', '4326', '4032', '4873', '4151', '4905', '4270', '4156', '4733', '4980', '4866', '4325', '4055', '4467', '4480', '4286', '4191', '4762', '4322', '4574', '4022', '4056', '4770', '4451', '4448', '4845', '4341', '4433', '4245', '4684', '4671', '4093', '4920', '4272', '4745', '4799', '4761', '4250', '4578', '4347', '4499', '4526', '4369', '4162', '4537', '4434', '4893', '4120', '4962', '4667', '4525', '4091', '4462', '4182', '4738', '4935', '4173', '4490', '4571', '4424', '4894', '4051', '4214', '4823', '4096', '4206', '4598', '4943', '4701', '4649', '4807', '4107', '4435', '4456', '4083', '4612', '4721', '4472', '4146', '4925', '4340', '4789', '4277', '4375', '4211', '4427', '4547', '4690', '4613', '4727', '4006', '4203', '4430', '4223', '4039', '4932', '4296', '4108', '4278', '4832', '4422', '4917', '4470', '4183', '4887', '4076', '4485', '4597', '4443', '4257', '4991', '4944', '4196', '4672', '4397', '4097', '4119', '4077', '4773', '4602', '4538', '4479', '4968', '4159', '4539', '4956', '4710', '4812', '4902', '4569', '4954', '4385', '4128', '4936', '4416', '4148', '4632', '4759', '4117', '4896', '4392', '4864', '4316', '4132', '4319', '4969', '4175', '4484', '4903', '4910', '4350', '4332', '4952', '4176', '4594', '4709', '4509', '4178', '4167', '4545', '4857', '4617', '4501', '4859', '4207', '4275', '4687', '4049', '4579', '4046', '4921', '4113', '4898', '4681', '4052', '4415', '4064', '4184', '4895', '4744', '4685', '4084', '4305', '4899', '4559', '4208', '4057', '4507', '4258', '4355', '4086', '4373', '4323', '4541', '4297', '4483', '4889', '4531', '4327', '4441', '4914', '4303', '4677', '4445', '4802', '4343', '4585', '4338', '4524', '4590', '4624', '4288', '4704', '4134', '4043', '4720', '4058', '4328', '4095', '4026', '4423', '4657', '4118', '4633', '4487', '4822', '4904', '4255', '4001', '4387', '4500', '4190', '4686', '4995', '4661', '4783', '4992', '4165', '4065', '4927', '4306', '4856', '4292', '4420', '4963', '4468', '4240', '4724', '4432', '4447', '4518', '4028', '4670', '4339', '4771', '4018', '4489', '4110', '4708', '4945', '4136', '4492', '4930', '4090', '4734', '4886', '4542', '4227', '4486', '4491', '4713', '4986', '4068', '4048', '4975', '4570', '4842', '4475', '4131', '4555', '4428', '4776', '4101', '4273', '4811', '4345', '5000', '4653', '4256', '4209', '4769', '4946', '4561', '4080', '4461', '4820', '4311', '4959', '4750', '4795', '4748', '4368', '4506', '4335', '4346', '4568', '4675', '4692', '4774', '4413', '4370', '4723', '4521', '4885', '4678', '4897', '4066', '4674', '4106', '4626', '4389', '4204', '4839', '4023', '4712', '4145', '4035', '4357', '4756', '4648', '4972', '4157', '4406', '4615', '4061', '4219', '4791', '4660', '4073', '4356', '4072', '4599', '4359', '4094', '4673', '4696', '4796', '4282', '4714', '4522', '4736', '4775', '4760', '4400', '4847', '4228', '4803', '4908', '4732', '4645', '4122', '4218', '4478', '4941', '4892', '4364', '4403', '4152', '4444', '4360', '4354', '4241', '4494', '4367', '4808', '4261', '4088', '4573', '4554', '4248', '4371', '4393', '4268', '4201', '4038', '4788', '4593', '4040', '4801', '4582', '4309', '4976', '4374', '4869', '4380', '4514', '4243', '4362', '4849', '4680', '4888', '4764', '4618', '4838', '4828', '4643', '4010', '4827', '4957', '4099', '4875', '4843', '4737', '4102', '4979', '4011', '4504', '4440', '4746', '4557', '4426', '4553', '4656', '4868', '4689', '4988', '4703', '4967', '4069', '4619', '4334', '4669', '4785', '4464', '4562', '4961', '4625', '4754', '4797', '4481', '4705', '4199', '4337', '4062', '4138', '4702', '4534', '4168', '4418', '4092', '4682', '4520', '4030', '4171', '4650', '4858', '4411', '4999', '4252', '4197', '4170', '4942', '4631', '4990', '4179', '4285', '4700', '4482', '4575', '4800', '4070', '4251', '4344', '4982', '4719', '4390', '4149', '4100', '4194', '4269', '4855', '4314', '4718', '4232', '4730', '4438', '4588', '4195', '4192', '4493', '4517', '4833', '4234', '4989', '4315', '4844', '4142', '4408', '4584', '4425']
+a2 = ['5650', '6274', '5600', '6197', '6324', '5850', '5630', '5955', '6343', '6233', '6065', '5637', '5561', '6500', '5565', '5845', '5916', '6229', '5857', '5747', '6419', '5936', '6363', '5773', '6399', '6350', '6172', '6494', '6042', '6013', '6132', '5887', '6215', '5837', '5663', '5695', '6453', '5698', '5941', '6186', '5902', '6116', '6487', '5945', '5694', '6392', '5605', '5524', '5884', '6470', '5503', '6458', '5910', '6469', '5645', '5540', '5505', '6136', '5715', '6306', '6164', '6406', '6120', '5919', '5592', '5595', '5684', '6464', '5958', '6060', '5862', '5672', '5670', '6211', '6321', '5654', '5516', '6278', '6084', '5867', '5577', '6379', '6139', '6472', '6251', '6460', '5831', '6133', '5772', '5788', '6260', '5580', '5912', '5865', '5616', '6153', '5567', '5709', '5963', '6489', '6344', '6113', '6409', '5987', '6141', '5508', '6093', '5723', '5883', '5829', '6086', '5774', '6026', '5601', '5859', '5517', '6252', '6412', '6481', '5828', '5556', '6234', '6416', '5562', '5992', '6045', '5559', '6309', '6109', '6273', '6407', '5743', '6338', '5706', '5719', '6430', '5693', '6247', '6450', '5710', '6015', '6429', '5607', '6056', '6495', '5613', '6370', '5671', '5751', '6237', '5748', '6217', '5977', '6194', '5511', '5599', '5624', '5923', '6452', '5841', '5798', '6025', '5879', '6420', '6177', '6294', '5871', '6105', '5822', '5770', '5724', '5754', '6063', '6291', '5529', '5921', '6018', '5856', '6058', '6372', '6361', '5889', '5899', '5555', '6454', '5960', '6411', '5512', '6069', '5913', '5502', '5821', '5965', '6475', '5697', '5523', '5676', '6076', '5648', '5769', '5948', '6493', '5683', '6200', '5651', '5653', '5885', '5667', '6404', '6432', '6226', '6102', '6213', '5796', '6462', '5811', '5764', '6100', '6073', '6117', '6147', '6373', '5777', '6221', '6184', '5553', '5731', '5536', '6288', '6204', '5586', '5707', '5753', '6362', '5602', '5924', '6231', '5832', '6264', '5968', '5597', '6467', '5946', '6212', '6275', '5509', '6156', '5582', '5816', '5909', '5791', '5952', '6442', '6474', '6023', '5939', '5649', '5531', '6259', '5994', '6388', '5776', '5641', '6068', '6477', '6220', '6286', '5897', '5873', '6381', '6339', '5652', '5589', '6302', '6227', '5544', '5793', '5892', '6488', '5506', '5876', '5781', '5576', '5521', '6331', '6131', '5617', '6332', '5801', '6107', '6463', '6457', '5802', '5737', '6104', '5550', '6253', '6368', '6050', '5766', '5534', '6224', '6401', '6303', '5786', '5735', '6282', '5596', '6459', '6122', '6492', '5854', '5988', '5549', '6318', '5840', '6178', '5640', '5752', '6040', '5665', '5755', '5535', '5721', '6088', '5914', '5689', '6256', '5838', '6021', '5674', '6028', '6223', '6189', '5886', '6232', '5878', '6424', '6413', '6482', '6155', '5638', '6160', '6440', '5571', '6037', '6323', '5959', '6468', '5826', '5682', '6327', '5514', '6390', '5510', '5870', '6108', '5722', '5934', '5998', '6402', '6348', '5718', '6471', '5942', '6029', '6185', '5926', '6386', '5940', '6443', '6230', '5855', '6349', '6059', '6276', '5740', '5996', '6238', '6287', '5812', '5578', '5658', '5525', '6380', '6095', '6112', '5925', '6246', '5985', '5692', '6261', '5734', '6337', '5966', '6004', '6151', '6161', '5917', '5863', '6300', '5732', '5547', '5851', '6295', '5787', '5864', '5545', '6356', '6175', '6154', '5680', '5799', '5500', '5969', '6301', '5622', '6071', '6030', '5655', '6299', '5519', '5818', '6064', '6054', '5646', '6166', '6272', '5610', '5705', '5956', '5820', '5920', '5581', '6268', '6027', '6074', '6087', '5668', '5794', '5880', '6173', '6434', '6374', '6008', '5807', '5739', '6307', '6437', '5619', '6451', '5618', '5628', '5932', '6235', '6190', '6225', '5629', '5911', '6257', '6410', '6304', '6140', '6395', '5817', '6284', '5927', '6010', '5639', '5758', '6098', '6051', '6239', '5979', '6281', '6417', '5903', '5675', '6456', '5795', '5527', '6242', '6387', '6090', '5623', '5890', '6322', '6418', '6110', '6254', '5620', '5537', '5573', '6359', '5612', '6325', '5513', '6044', '5918', '6473', '6148', '6341', '5543', '6448', '6101', '6280', '6222', '6438', '5981', '6152', '5532', '5626', '6491', '5591', '6170', '5953', '6115', '5744', '6179', '5632', '5861', '6421', '6377', '6245', '5852', '5835', '5625', '6289', '5657', '6111', '5768', '5504', '5741', '5606', '6480', '6167', '6096', '6005', '5522', '5974', '6435', '5643', '6290', '5780', '6444', '6083', '5989', '5893', '5539', '6347', '6016', '6210', '6391', '5789', '5967', '5778', '6035', '6476', '5836', '5702', '6003', '5881', '5714', '6002', '6024', '6203', '6119', '5656', '5691', '5944', '5935', '6046', '5763', '6032', '6266', '6250', '5997', '6207', '6092', '6103', '6043', '5999', '5725', '5552', '6007', '6314', '6159', '5844', '5633', '6269', '5720', '5961', '5583', '6446', '5877', '6171', '6199', '6315', '6271', '5756', '6497', '6383', '5704', '5585', '6144', '6384', '6426', '6285', '5611', '6439', '6351', '5574', '5609', '5905', '5538', '5824', '6149', '6036', '5728', '5515', '5929', '6422', '5644', '6366', '5900', '6354', '6121', '5669', '6394', '5703', '5978', '6022', '6085', '5604', '6436', '5688', '6079', '5767', '6378', '5541', '6398', '6265', '6174', '5809', '5819', '6428', '6163', '5660', '6342', '6097', '6128', '6114', '6183', '5685', '5711', '6277', '6089', '5584', '6201', '6305', '6427', '5975', '5642', '6048', '6091', '6130', '5673', '5621', '5993', '5528', '6353', '6345', '6241', '6041', '6137', '6019', '5810', '6385', '6000', '6169', '6298', '6078', '5699', '6358', '5588', '5546', '5678', '5627', '6106', '5785', '6055', '6425', '5906', '5928', '6415', '6182', '6075', '5962', '6052', '6382', '6145', '6129', '6498', '5904', '5779', '5520', '5784', '5783', '6334', '5970', '6205', '5847', '6441', '6066', '6365', '6176', '5849', '6371', '6326', '5686', '5708', '6180', '5814', '5636', '6431', '6405', '6070', '5869', '6077', '5738', '6080', '6496', '5950', '5806', '5782', '5827', '5896', '5598', '5746', '6014', '5742', '6465', '6123', '5964', '6038', '6218', '6020', '5727', '5888', '5530', '6389', '6061', '6483', '6031', '5901', '6393', '6466', '6320', '5666', '5805', '6168', '5986', '5833', '6143', '6181', '5635', '5681', '6447', '6047', '5570', '5898', '5560', '5931', '6126', '6053', '5823', '5566', '5526', '5858', '5548', '6209', '6336', '6011', '5587', '5677', '6082', '5891', '5839', '5874', '5579', '6214', '6397', '5568', '6263', '5991', '5972', '6081', '6490', '6267', '6310', '6248', '5937', '6216', '6333', '5608', '5875', '5551', '6445', '5983', '5848', '5954', '6262', '5762', '6146', '6191', '6206', '6355', '6244', '5868', '5980', '6423', '5922', '6099', '5933', '5614', '5713', '6317', '6312', '5984', '6255', '6187', '6162', '5930', '5690', '5813', '6192', '6400', '5533', '5973', '6150', '6308', '6313', '6125', '6124', '5733', '5951', '5957', '5662', '5765', '5501', '5894', '5797', '5729', '5730', '6403', '6033', '6455', '5895', '6017', '5712', '6219', '5615', '6208', '6198', '6157', '5634', '6408', '5947', '5745', '5971', '6228', '6296', '5843', '5804', '6293', '6202', '5716', '5846', '6461', '5569', '6006', '5603', '6135', '6360', '5717', '6193', '5792', '5775', '5507', '6243', '5872', '6499', '5736', '6158', '6340', '5995', '6311', '6258', '5938', '6479', '5572', '5882', '6195', '6297', '5943', '5825', '6328', '6330', '5679', '6319', '6236', '6485', '6414', '5908', '6001', '5558', '6396', '6486', '5757', '5803', '5700', '5593', '5866', '6433', '5726', '6240', '5830', '6449', '5575', '6478', '5564', '5915', '6034', '6072', '6484', '6375', '5976', '5631', '6138', '5659', '6346', '6118', '6279', '5554', '6283', '5800', '5594', '5701', '6292', '5842', '5518', '6335', '5750', '6196', '5749', '6329', '6369', '5760', '6134', '5661', '6188', '5542', '6127', '6062', '6352', '6270', '5761', '6165', '6376', '6049', '5687', '6364', '5696', '6367', '5990', '5771', '6057', '6094', '5815', '6039', '5759', '5949', '5563', '5590', '5853', '6009', '5907', '5834', '5982', '5664', '6316', '5557', '6067', '6249', '6142', '6357', '5790', '5647', '5808', '5860', '6012']
+
+1000.times do
+  x = a1 - a2
+  y = a2 - a1
+end
diff --git a/benchmark/bm_array_union_numbers.rb b/benchmark/bm_array_union_numbers.rb
new file mode 100644
index 00000000..87907624
--- /dev/null
+++ b/benchmark/bm_array_union_numbers.rb
@@ -0,0 +1,7 @@
+a1 = [4768, 4964, 4266, 4872, 4231, 4017, 4565, 4793, 4298, 4135, 4639, 4780, 4237, 4548, 4655, 4153, 4654, 4922, 4563, 4042, 4329, 4699, 4352, 4127, 4544, 4906, 4814, 4948, 4977, 4830, 4405, 4642, 4666, 4402, 4679, 4465, 4401, 4155, 4767, 4510, 4747, 4993, 4508, 4697, 4758, 4133, 4348, 4200, 4442, 4970, 4452, 4041, 4103, 4567, 4937, 4047, 4933, 4121, 4860, 4659, 4221, 4312, 4583, 4473, 4973, 4262, 4630, 4123, 4139, 4289, 4147, 4222, 4050, 4019, 4454, 4253, 4552, 4947, 4725, 4457, 4929, 4021, 4502, 4307, 4576, 4124, 4586, 4610, 4027, 4572, 4926, 4753, 4185, 4382, 4394, 4923, 4186, 4254, 4012, 4417, 4556, 4349, 4550, 4330, 4938, 4985, 4778, 4716, 4924, 4045, 4358, 4189, 4591, 4213, 4851, 4825, 4260, 4198, 4342, 4824, 4333, 4244, 4752, 4994, 4488, 4532, 4082, 4595, 4098, 4436, 4540, 4267, 4407, 4998, 4751, 4535, 4861, 4819, 4419, 4031, 4029, 4453, 4698, 4965, 4450, 4668, 4036, 4300, 4519, 4281, 4981, 4818, 4939, 4378, 4140, 4841, 4249, 4290, 4388, 4878, 4884, 4235, 4515, 4638, 4410, 4054, 4383, 4238, 4870, 4295, 4804, 4308, 4614, 4105, 4053, 4446, 4757, 4971, 4637, 4831, 4193, 4912, 4000, 4187, 4606, 4566, 4169, 4641, 4749, 4729, 4928, 4601, 4949, 4210, 4313, 4647, 4495, 4460, 4621, 4605, 4694, 4317, 4226, 4263, 4016, 4997, 4940, 4715, 4907, 4620, 4934, 4996, 4955, 4688, 4304, 4220, 4882, 4772, 4536, 4815, 4693, 4469, 4276, 4409, 4071, 4224, 4020, 4629, 4865, 4813, 4366, 4622, 4129, 4533, 4634, 4564, 4087, 4386, 4161, 4265, 4711, 4009, 4376, 4781, 4837, 4112, 4915, 4592, 4658, 4025, 4987, 4291, 4477, 4503, 4437, 4111, 4707, 4879, 4611, 4549, 4078, 4044, 4853, 4835, 4463, 4577, 4008, 4233, 4741, 4384, 4225, 4024, 4726, 4743, 4160, 4180, 4722, 4609, 4114, 4834, 4742, 4662, 4984, 4299, 4060, 4498, 4755, 4320, 4874, 4528, 4216, 4852, 4951, 4958, 4283, 4239, 4476, 4644, 4143, 4104, 4455, 4126, 4950, 4663, 4013, 4931, 4850, 4242, 4130, 4623, 4871, 4014, 4854, 4293, 4512, 4166, 4740, 4735, 4150, 4651, 4172, 4836, 4530, 4664, 4429, 4511, 4558, 4676, 4085, 4074, 4580, 4794, 4379, 4310, 4817, 4966, 4848, 4202, 4336, 4608, 4351, 4396, 4652, 4033, 4188, 4431, 4916, 4259, 4607, 4816, 4810, 4627, 4527, 4560, 4728, 4589, 4274, 4809, 4790, 4398, 4414, 4516, 4581, 4919, 4665, 4331, 4978, 4543, 4877, 4974, 4284, 4004, 4177, 4466, 4116, 4217, 4901, 4372, 4137, 4806, 4264, 4497, 4294, 4787, 4212, 4215, 4115, 4782, 4739, 4821, 4125, 4505, 4230, 4399, 4395, 4079, 4867, 4381, 4706, 4695, 4404, 4691, 4075, 4353, 4301, 4876, 4731, 4523, 4246, 4529, 4412, 4784, 4449, 4229, 4616, 4158, 4002, 4318, 4377, 4205, 4911, 4777, 4792, 4271, 4763, 4141, 4287, 4890, 4279, 4829, 4646, 4840, 4089, 4880, 4067, 4918, 4059, 4109, 4164, 4863, 4883, 4909, 4361, 4174, 4960, 4302, 4003, 4236, 4846, 4034, 4324, 4513, 4765, 4596, 4900, 4007, 4603, 4474, 4439, 4805, 4015, 4496, 4953, 4363, 4551, 4459, 4063, 4983, 4881, 4365, 4604, 4587, 4798, 4005, 4163, 4421, 4471, 4826, 4144, 4635, 4600, 4913, 4640, 4247, 4766, 4779, 4280, 4391, 4891, 4636, 4546, 4683, 4181, 4081, 4862, 4458, 4037, 4321, 4786, 4717, 4628, 4154, 4326, 4032, 4873, 4151, 4905, 4270, 4156, 4733, 4980, 4866, 4325, 4055, 4467, 4480, 4286, 4191, 4762, 4322, 4574, 4022, 4056, 4770, 4451, 4448, 4845, 4341, 4433, 4245, 4684, 4671, 4093, 4920, 4272, 4745, 4799, 4761, 4250, 4578, 4347, 4499, 4526, 4369, 4162, 4537, 4434, 4893, 4120, 4962, 4667, 4525, 4091, 4462, 4182, 4738, 4935, 4173, 4490, 4571, 4424, 4894, 4051, 4214, 4823, 4096, 4206, 4598, 4943, 4701, 4649, 4807, 4107, 4435, 4456, 4083, 4612, 4721, 4472, 4146, 4925, 4340, 4789, 4277, 4375, 4211, 4427, 4547, 4690, 4613, 4727, 4006, 4203, 4430, 4223, 4039, 4932, 4296, 4108, 4278, 4832, 4422, 4917, 4470, 4183, 4887, 4076, 4485, 4597, 4443, 4257, 4991, 4944, 4196, 4672, 4397, 4097, 4119, 4077, 4773, 4602, 4538, 4479, 4968, 4159, 4539, 4956, 4710, 4812, 4902, 4569, 4954, 4385, 4128, 4936, 4416, 4148, 4632, 4759, 4117, 4896, 4392, 4864, 4316, 4132, 4319, 4969, 4175, 4484, 4903, 4910, 4350, 4332, 4952, 4176, 4594, 4709, 4509, 4178, 4167, 4545, 4857, 4617, 4501, 4859, 4207, 4275, 4687, 4049, 4579, 4046, 4921, 4113, 4898, 4681, 4052, 4415, 4064, 4184, 4895, 4744, 4685, 4084, 4305, 4899, 4559, 4208, 4057, 4507, 4258, 4355, 4086, 4373, 4323, 4541, 4297, 4483, 4889, 4531, 4327, 4441, 4914, 4303, 4677, 4445, 4802, 4343, 4585, 4338, 4524, 4590, 4624, 4288, 4704, 4134, 4043, 4720, 4058, 4328, 4095, 4026, 4423, 4657, 4118, 4633, 4487, 4822, 4904, 4255, 4001, 4387, 4500, 4190, 4686, 4995, 4661, 4783, 4992, 4165, 4065, 4927, 4306, 4856, 4292, 4420, 4963, 4468, 4240, 4724, 4432, 4447, 4518, 4028, 4670, 4339, 4771, 4018, 4489, 4110, 4708, 4945, 4136, 4492, 4930, 4090, 4734, 4886, 4542, 4227, 4486, 4491, 4713, 4986, 4068, 4048, 4975, 4570, 4842, 4475, 4131, 4555, 4428, 4776, 4101, 4273, 4811, 4345, 5000, 4653, 4256, 4209, 4769, 4946, 4561, 4080, 4461, 4820, 4311, 4959, 4750, 4795, 4748, 4368, 4506, 4335, 4346, 4568, 4675, 4692, 4774, 4413, 4370, 4723, 4521, 4885, 4678, 4897, 4066, 4674, 4106, 4626, 4389, 4204, 4839, 4023, 4712, 4145, 4035, 4357, 4756, 4648, 4972, 4157, 4406, 4615, 4061, 4219, 4791, 4660, 4073, 4356, 4072, 4599, 4359, 4094, 4673, 4696, 4796, 4282, 4714, 4522, 4736, 4775, 4760, 4400, 4847, 4228, 4803, 4908, 4732, 4645, 4122, 4218, 4478, 4941, 4892, 4364, 4403, 4152, 4444, 4360, 4354, 4241, 4494, 4367, 4808, 4261, 4088, 4573, 4554, 4248, 4371, 4393, 4268, 4201, 4038, 4788, 4593, 4040, 4801, 4582, 4309, 4976, 4374, 4869, 4380, 4514, 4243, 4362, 4849, 4680, 4888, 4764, 4618, 4838, 4828, 4643, 4010, 4827, 4957, 4099, 4875, 4843, 4737, 4102, 4979, 4011, 4504, 4440, 4746, 4557, 4426, 4553, 4656, 4868, 4689, 4988, 4703, 4967, 4069, 4619, 4334, 4669, 4785, 4464, 4562, 4961, 4625, 4754, 4797, 4481, 4705, 4199, 4337, 4062, 4138, 4702, 4534, 4168, 4418, 4092, 4682, 4520, 4030, 4171, 4650, 4858, 4411, 4999, 4252, 4197, 4170, 4942, 4631, 4990, 4179, 4285, 4700, 4482, 4575, 4800, 4070, 4251, 4344, 4982, 4719, 4390, 4149, 4100, 4194, 4269, 4855, 4314, 4718, 4232, 4730, 4438, 4588, 4195, 4192, 4493, 4517, 4833, 4234, 4989, 4315, 4844, 4142, 4408, 4584, 4425]
+a2 = [5650, 6274, 5600, 6197, 6324, 5850, 5630, 5955, 6343, 6233, 6065, 5637, 5561, 6500, 5565, 5845, 5916, 6229, 5857, 5747, 6419, 5936, 6363, 5773, 6399, 6350, 6172, 6494, 6042, 6013, 6132, 5887, 6215, 5837, 5663, 5695, 6453, 5698, 5941, 6186, 5902, 6116, 6487, 5945, 5694, 6392, 5605, 5524, 5884, 6470, 5503, 6458, 5910, 6469, 5645, 5540, 5505, 6136, 5715, 6306, 6164, 6406, 6120, 5919, 5592, 5595, 5684, 6464, 5958, 6060, 5862, 5672, 5670, 6211, 6321, 5654, 5516, 6278, 6084, 5867, 5577, 6379, 6139, 6472, 6251, 6460, 5831, 6133, 5772, 5788, 6260, 5580, 5912, 5865, 5616, 6153, 5567, 5709, 5963, 6489, 6344, 6113, 6409, 5987, 6141, 5508, 6093, 5723, 5883, 5829, 6086, 5774, 6026, 5601, 5859, 5517, 6252, 6412, 6481, 5828, 5556, 6234, 6416, 5562, 5992, 6045, 5559, 6309, 6109, 6273, 6407, 5743, 6338, 5706, 5719, 6430, 5693, 6247, 6450, 5710, 6015, 6429, 5607, 6056, 6495, 5613, 6370, 5671, 5751, 6237, 5748, 6217, 5977, 6194, 5511, 5599, 5624, 5923, 6452, 5841, 5798, 6025, 5879, 6420, 6177, 6294, 5871, 6105, 5822, 5770, 5724, 5754, 6063, 6291, 5529, 5921, 6018, 5856, 6058, 6372, 6361, 5889, 5899, 5555, 6454, 5960, 6411, 5512, 6069, 5913, 5502, 5821, 5965, 6475, 5697, 5523, 5676, 6076, 5648, 5769, 5948, 6493, 5683, 6200, 5651, 5653, 5885, 5667, 6404, 6432, 6226, 6102, 6213, 5796, 6462, 5811, 5764, 6100, 6073, 6117, 6147, 6373, 5777, 6221, 6184, 5553, 5731, 5536, 6288, 6204, 5586, 5707, 5753, 6362, 5602, 5924, 6231, 5832, 6264, 5968, 5597, 6467, 5946, 6212, 6275, 5509, 6156, 5582, 5816, 5909, 5791, 5952, 6442, 6474, 6023, 5939, 5649, 5531, 6259, 5994, 6388, 5776, 5641, 6068, 6477, 6220, 6286, 5897, 5873, 6381, 6339, 5652, 5589, 6302, 6227, 5544, 5793, 5892, 6488, 5506, 5876, 5781, 5576, 5521, 6331, 6131, 5617, 6332, 5801, 6107, 6463, 6457, 5802, 5737, 6104, 5550, 6253, 6368, 6050, 5766, 5534, 6224, 6401, 6303, 5786, 5735, 6282, 5596, 6459, 6122, 6492, 5854, 5988, 5549, 6318, 5840, 6178, 5640, 5752, 6040, 5665, 5755, 5535, 5721, 6088, 5914, 5689, 6256, 5838, 6021, 5674, 6028, 6223, 6189, 5886, 6232, 5878, 6424, 6413, 6482, 6155, 5638, 6160, 6440, 5571, 6037, 6323, 5959, 6468, 5826, 5682, 6327, 5514, 6390, 5510, 5870, 6108, 5722, 5934, 5998, 6402, 6348, 5718, 6471, 5942, 6029, 6185, 5926, 6386, 5940, 6443, 6230, 5855, 6349, 6059, 6276, 5740, 5996, 6238, 6287, 5812, 5578, 5658, 5525, 6380, 6095, 6112, 5925, 6246, 5985, 5692, 6261, 5734, 6337, 5966, 6004, 6151, 6161, 5917, 5863, 6300, 5732, 5547, 5851, 6295, 5787, 5864, 5545, 6356, 6175, 6154, 5680, 5799, 5500, 5969, 6301, 5622, 6071, 6030, 5655, 6299, 5519, 5818, 6064, 6054, 5646, 6166, 6272, 5610, 5705, 5956, 5820, 5920, 5581, 6268, 6027, 6074, 6087, 5668, 5794, 5880, 6173, 6434, 6374, 6008, 5807, 5739, 6307, 6437, 5619, 6451, 5618, 5628, 5932, 6235, 6190, 6225, 5629, 5911, 6257, 6410, 6304, 6140, 6395, 5817, 6284, 5927, 6010, 5639, 5758, 6098, 6051, 6239, 5979, 6281, 6417, 5903, 5675, 6456, 5795, 5527, 6242, 6387, 6090, 5623, 5890, 6322, 6418, 6110, 6254, 5620, 5537, 5573, 6359, 5612, 6325, 5513, 6044, 5918, 6473, 6148, 6341, 5543, 6448, 6101, 6280, 6222, 6438, 5981, 6152, 5532, 5626, 6491, 5591, 6170, 5953, 6115, 5744, 6179, 5632, 5861, 6421, 6377, 6245, 5852, 5835, 5625, 6289, 5657, 6111, 5768, 5504, 5741, 5606, 6480, 6167, 6096, 6005, 5522, 5974, 6435, 5643, 6290, 5780, 6444, 6083, 5989, 5893, 5539, 6347, 6016, 6210, 6391, 5789, 5967, 5778, 6035, 6476, 5836, 5702, 6003, 5881, 5714, 6002, 6024, 6203, 6119, 5656, 5691, 5944, 5935, 6046, 5763, 6032, 6266, 6250, 5997, 6207, 6092, 6103, 6043, 5999, 5725, 5552, 6007, 6314, 6159, 5844, 5633, 6269, 5720, 5961, 5583, 6446, 5877, 6171, 6199, 6315, 6271, 5756, 6497, 6383, 5704, 5585, 6144, 6384, 6426, 6285, 5611, 6439, 6351, 5574, 5609, 5905, 5538, 5824, 6149, 6036, 5728, 5515, 5929, 6422, 5644, 6366, 5900, 6354, 6121, 5669, 6394, 5703, 5978, 6022, 6085, 5604, 6436, 5688, 6079, 5767, 6378, 5541, 6398, 6265, 6174, 5809, 5819, 6428, 6163, 5660, 6342, 6097, 6128, 6114, 6183, 5685, 5711, 6277, 6089, 5584, 6201, 6305, 6427, 5975, 5642, 6048, 6091, 6130, 5673, 5621, 5993, 5528, 6353, 6345, 6241, 6041, 6137, 6019, 5810, 6385, 6000, 6169, 6298, 6078, 5699, 6358, 5588, 5546, 5678, 5627, 6106, 5785, 6055, 6425, 5906, 5928, 6415, 6182, 6075, 5962, 6052, 6382, 6145, 6129, 6498, 5904, 5779, 5520, 5784, 5783, 6334, 5970, 6205, 5847, 6441, 6066, 6365, 6176, 5849, 6371, 6326, 5686, 5708, 6180, 5814, 5636, 6431, 6405, 6070, 5869, 6077, 5738, 6080, 6496, 5950, 5806, 5782, 5827, 5896, 5598, 5746, 6014, 5742, 6465, 6123, 5964, 6038, 6218, 6020, 5727, 5888, 5530, 6389, 6061, 6483, 6031, 5901, 6393, 6466, 6320, 5666, 5805, 6168, 5986, 5833, 6143, 6181, 5635, 5681, 6447, 6047, 5570, 5898, 5560, 5931, 6126, 6053, 5823, 5566, 5526, 5858, 5548, 6209, 6336, 6011, 5587, 5677, 6082, 5891, 5839, 5874, 5579, 6214, 6397, 5568, 6263, 5991, 5972, 6081, 6490, 6267, 6310, 6248, 5937, 6216, 6333, 5608, 5875, 5551, 6445, 5983, 5848, 5954, 6262, 5762, 6146, 6191, 6206, 6355, 6244, 5868, 5980, 6423, 5922, 6099, 5933, 5614, 5713, 6317, 6312, 5984, 6255, 6187, 6162, 5930, 5690, 5813, 6192, 6400, 5533, 5973, 6150, 6308, 6313, 6125, 6124, 5733, 5951, 5957, 5662, 5765, 5501, 5894, 5797, 5729, 5730, 6403, 6033, 6455, 5895, 6017, 5712, 6219, 5615, 6208, 6198, 6157, 5634, 6408, 5947, 5745, 5971, 6228, 6296, 5843, 5804, 6293, 6202, 5716, 5846, 6461, 5569, 6006, 5603, 6135, 6360, 5717, 6193, 5792, 5775, 5507, 6243, 5872, 6499, 5736, 6158, 6340, 5995, 6311, 6258, 5938, 6479, 5572, 5882, 6195, 6297, 5943, 5825, 6328, 6330, 5679, 6319, 6236, 6485, 6414, 5908, 6001, 5558, 6396, 6486, 5757, 5803, 5700, 5593, 5866, 6433, 5726, 6240, 5830, 6449, 5575, 6478, 5564, 5915, 6034, 6072, 6484, 6375, 5976, 5631, 6138, 5659, 6346, 6118, 6279, 5554, 6283, 5800, 5594, 5701, 6292, 5842, 5518, 6335, 5750, 6196, 5749, 6329, 6369, 5760, 6134, 5661, 6188, 5542, 6127, 6062, 6352, 6270, 5761, 6165, 6376, 6049, 5687, 6364, 5696, 6367, 5990, 5771, 6057, 6094, 5815, 6039, 5759, 5949, 5563, 5590, 5853, 6009, 5907, 5834, 5982, 5664, 6316, 5557, 6067, 6249, 6142, 6357, 5790, 5647, 5808, 5860, 6012]
+
+1000.times do
+  x = a1 | a2
+  y = a2 | a1
+end
diff --git a/benchmark/bm_array_union_objects.rb b/benchmark/bm_array_union_objects.rb
new file mode 100644
index 00000000..2d2d2618
--- /dev/null
+++ b/benchmark/bm_array_union_objects.rb
@@ -0,0 +1,7 @@
+a1 = [Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, 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'4488', '4532', '4082', '4595', '4098', '4436', '4540', '4267', '4407', '4998', '4751', '4535', '4861', '4819', '4419', '4031', '4029', '4453', '4698', '4965', '4450', '4668', '4036', '4300', '4519', '4281', '4981', '4818', '4939', '4378', '4140', '4841', '4249', '4290', '4388', '4878', '4884', '4235', '4515', '4638', '4410', '4054', '4383', '4238', '4870', '4295', '4804', '4308', '4614', '4105', '4053', '4446', '4757', '4971', '4637', '4831', '4193', '4912', '4000', '4187', '4606', '4566', '4169', '4641', '4749', '4729', '4928', '4601', '4949', '4210', '4313', '4647', '4495', '4460', '4621', '4605', '4694', '4317', '4226', '4263', '4016', '4997', '4940', '4715', '4907', '4620', '4934', '4996', '4955', '4688', '4304', '4220', '4882', '4772', '4536', '4815', '4693', '4469', '4276', '4409', '4071', '4224', '4020', '4629', '4865', '4813', '4366', '4622', '4129', '4533', '4634', '4564', '4087', '4386', '4161', '4265', '4711', '4009', '4376', '4781', '4837', '4112', '4915', '4592', '4658', '4025', '4987', '4291', '4477', '4503', '4437', '4111', '4707', '4879', '4611', '4549', '4078', '4044', '4853', '4835', '4463', '4577', '4008', '4233', '4741', '4384', '4225', '4024', '4726', '4743', '4160', '4180', '4722', '4609', '4114', '4834', '4742', '4662', '4984', '4299', '4060', '4498', '4755', '4320', '4874', '4528', '4216', '4852', '4951', '4958', '4283', '4239', '4476', '4644', '4143', '4104', '4455', '4126', '4950', '4663', '4013', '4931', '4850', '4242', '4130', '4623', '4871', '4014', '4854', '4293', '4512', '4166', '4740', '4735', '4150', '4651', '4172', '4836', '4530', '4664', '4429', '4511', '4558', '4676', '4085', '4074', '4580', '4794', '4379', '4310', '4817', '4966', '4848', '4202', '4336', '4608', '4351', '4396', '4652', '4033', '4188', '4431', '4916', '4259', '4607', '4816', '4810', '4627', '4527', '4560', '4728', '4589', '4274', '4809', '4790', '4398', '4414', '4516', '4581', '4919', '4665', '4331', '4978', '4543', '4877', '4974', '4284', '4004', '4177', '4466', '4116', '4217', '4901', '4372', '4137', '4806', '4264', '4497', '4294', '4787', '4212', '4215', '4115', '4782', '4739', '4821', '4125', '4505', '4230', '4399', '4395', '4079', '4867', '4381', '4706', '4695', '4404', '4691', '4075', '4353', '4301', '4876', '4731', '4523', '4246', '4529', '4412', '4784', '4449', '4229', '4616', '4158', '4002', '4318', '4377', '4205', '4911', '4777', '4792', '4271', '4763', '4141', '4287', '4890', '4279', '4829', '4646', '4840', '4089', '4880', '4067', '4918', '4059', '4109', '4164', '4863', '4883', '4909', '4361', '4174', '4960', '4302', '4003', '4236', '4846', '4034', '4324', '4513', '4765', '4596', '4900', '4007', '4603', '4474', '4439', '4805', '4015', '4496', '4953', '4363', '4551', '4459', '4063', '4983', '4881', '4365', '4604', '4587', '4798', '4005', '4163', '4421', '4471', '4826', '4144', '4635', '4600', '4913', '4640', '4247', '4766', '4779', '4280', '4391', '4891', '4636', '4546', '4683', '4181', '4081', '4862', '4458', '4037', '4321', '4786', '4717', '4628', '4154', '4326', '4032', '4873', '4151', '4905', '4270', '4156', '4733', '4980', '4866', '4325', '4055', '4467', '4480', '4286', '4191', '4762', '4322', '4574', '4022', '4056', '4770', '4451', '4448', '4845', '4341', '4433', '4245', '4684', '4671', '4093', '4920', '4272', '4745', '4799', '4761', '4250', '4578', '4347', '4499', '4526', '4369', '4162', '4537', '4434', '4893', '4120', '4962', '4667', '4525', '4091', '4462', '4182', '4738', '4935', '4173', '4490', '4571', '4424', '4894', '4051', '4214', '4823', '4096', '4206', '4598', '4943', '4701', '4649', '4807', '4107', '4435', '4456', '4083', '4612', '4721', '4472', '4146', '4925', '4340', '4789', '4277', '4375', '4211', '4427', '4547', '4690', '4613', '4727', '4006', '4203', '4430', '4223', '4039', '4932', '4296', '4108', '4278', '4832', '4422', '4917', '4470', '4183', '4887', '4076', '4485', '4597', '4443', '4257', '4991', '4944', '4196', '4672', '4397', '4097', '4119', '4077', '4773', '4602', '4538', '4479', '4968', '4159', '4539', '4956', '4710', '4812', '4902', '4569', '4954', '4385', '4128', '4936', '4416', '4148', '4632', '4759', '4117', '4896', '4392', '4864', '4316', '4132', '4319', '4969', '4175', '4484', '4903', '4910', '4350', '4332', '4952', '4176', '4594', '4709', '4509', '4178', '4167', '4545', '4857', '4617', '4501', '4859', '4207', '4275', '4687', '4049', '4579', '4046', '4921', '4113', '4898', '4681', '4052', '4415', '4064', '4184', '4895', '4744', '4685', '4084', '4305', '4899', '4559', '4208', '4057', '4507', '4258', '4355', '4086', '4373', '4323', '4541', '4297', '4483', '4889', '4531', '4327', '4441', '4914', '4303', '4677', '4445', '4802', '4343', '4585', '4338', '4524', '4590', '4624', '4288', '4704', '4134', '4043', '4720', '4058', '4328', '4095', '4026', '4423', '4657', '4118', '4633', '4487', '4822', '4904', '4255', '4001', '4387', '4500', '4190', '4686', '4995', '4661', '4783', '4992', '4165', '4065', '4927', '4306', '4856', '4292', '4420', '4963', '4468', '4240', '4724', '4432', '4447', '4518', '4028', '4670', '4339', '4771', '4018', '4489', '4110', '4708', '4945', '4136', '4492', '4930', '4090', '4734', '4886', '4542', '4227', '4486', '4491', '4713', '4986', '4068', '4048', '4975', '4570', '4842', '4475', '4131', '4555', '4428', '4776', '4101', '4273', '4811', '4345', '5000', '4653', '4256', '4209', '4769', '4946', '4561', '4080', '4461', '4820', '4311', '4959', '4750', '4795', '4748', '4368', '4506', '4335', '4346', '4568', '4675', '4692', '4774', '4413', '4370', '4723', '4521', '4885', '4678', '4897', '4066', '4674', '4106', '4626', '4389', '4204', '4839', '4023', '4712', '4145', '4035', '4357', '4756', '4648', '4972', '4157', '4406', '4615', '4061', '4219', '4791', '4660', '4073', '4356', '4072', '4599', '4359', '4094', '4673', '4696', '4796', '4282', '4714', '4522', '4736', '4775', '4760', '4400', '4847', '4228', '4803', '4908', '4732', '4645', '4122', '4218', '4478', '4941', '4892', '4364', '4403', '4152', '4444', '4360', '4354', '4241', '4494', '4367', '4808', '4261', '4088', '4573', '4554', '4248', '4371', '4393', '4268', '4201', '4038', '4788', '4593', '4040', '4801', '4582', '4309', '4976', '4374', '4869', '4380', '4514', '4243', '4362', '4849', '4680', '4888', '4764', '4618', '4838', '4828', '4643', '4010', '4827', '4957', '4099', '4875', '4843', '4737', '4102', '4979', '4011', '4504', '4440', '4746', '4557', '4426', '4553', '4656', '4868', '4689', '4988', '4703', '4967', '4069', '4619', '4334', '4669', '4785', '4464', '4562', '4961', '4625', '4754', '4797', '4481', '4705', '4199', '4337', '4062', '4138', '4702', '4534', '4168', '4418', '4092', '4682', '4520', '4030', '4171', '4650', '4858', '4411', '4999', '4252', '4197', '4170', '4942', '4631', '4990', '4179', '4285', '4700', '4482', '4575', '4800', '4070', '4251', '4344', '4982', '4719', '4390', '4149', '4100', '4194', '4269', '4855', '4314', '4718', '4232', '4730', '4438', '4588', '4195', '4192', '4493', '4517', '4833', '4234', '4989', '4315', '4844', '4142', '4408', '4584', '4425']
+a2 = ['5650', '6274', '5600', '6197', '6324', '5850', '5630', '5955', '6343', '6233', '6065', '5637', '5561', '6500', '5565', '5845', '5916', '6229', '5857', '5747', '6419', '5936', '6363', '5773', '6399', '6350', '6172', '6494', '6042', '6013', '6132', '5887', '6215', '5837', '5663', '5695', '6453', '5698', '5941', '6186', '5902', '6116', '6487', '5945', '5694', '6392', '5605', '5524', '5884', '6470', '5503', '6458', '5910', '6469', '5645', '5540', '5505', '6136', '5715', '6306', '6164', '6406', '6120', '5919', '5592', '5595', '5684', '6464', '5958', '6060', '5862', '5672', '5670', '6211', '6321', '5654', '5516', '6278', '6084', '5867', '5577', '6379', '6139', '6472', '6251', '6460', '5831', '6133', '5772', '5788', '6260', '5580', '5912', '5865', '5616', '6153', '5567', '5709', '5963', '6489', '6344', '6113', '6409', '5987', '6141', '5508', '6093', '5723', '5883', '5829', '6086', '5774', '6026', '5601', '5859', '5517', '6252', '6412', '6481', '5828', '5556', '6234', '6416', '5562', '5992', '6045', '5559', '6309', '6109', '6273', '6407', '5743', '6338', '5706', '5719', '6430', '5693', '6247', '6450', '5710', '6015', '6429', '5607', '6056', '6495', '5613', '6370', '5671', '5751', '6237', '5748', '6217', '5977', '6194', '5511', '5599', '5624', '5923', '6452', '5841', '5798', '6025', '5879', '6420', '6177', '6294', '5871', '6105', '5822', '5770', '5724', '5754', '6063', '6291', '5529', '5921', '6018', '5856', '6058', '6372', '6361', '5889', '5899', '5555', '6454', '5960', '6411', '5512', '6069', '5913', '5502', '5821', '5965', '6475', '5697', '5523', '5676', '6076', '5648', '5769', '5948', '6493', '5683', '6200', '5651', '5653', '5885', '5667', '6404', '6432', '6226', '6102', '6213', '5796', '6462', '5811', '5764', '6100', '6073', '6117', '6147', '6373', '5777', '6221', '6184', '5553', '5731', '5536', '6288', '6204', '5586', '5707', '5753', '6362', '5602', '5924', '6231', '5832', '6264', '5968', '5597', '6467', '5946', '6212', '6275', '5509', '6156', '5582', '5816', '5909', '5791', '5952', '6442', '6474', '6023', '5939', '5649', '5531', '6259', '5994', '6388', '5776', '5641', '6068', '6477', '6220', '6286', '5897', '5873', '6381', '6339', '5652', '5589', '6302', '6227', '5544', '5793', '5892', '6488', '5506', '5876', '5781', '5576', '5521', '6331', '6131', '5617', '6332', '5801', '6107', '6463', '6457', '5802', '5737', '6104', '5550', '6253', '6368', '6050', '5766', '5534', '6224', '6401', '6303', '5786', '5735', '6282', '5596', '6459', '6122', '6492', '5854', '5988', '5549', '6318', '5840', '6178', '5640', '5752', '6040', '5665', '5755', '5535', '5721', '6088', '5914', '5689', '6256', '5838', '6021', '5674', '6028', '6223', '6189', '5886', '6232', '5878', '6424', '6413', '6482', '6155', '5638', '6160', '6440', '5571', '6037', '6323', '5959', '6468', '5826', '5682', '6327', '5514', '6390', '5510', '5870', '6108', '5722', '5934', '5998', '6402', '6348', '5718', '6471', '5942', '6029', '6185', '5926', '6386', '5940', '6443', '6230', '5855', '6349', '6059', '6276', '5740', '5996', '6238', '6287', '5812', '5578', '5658', '5525', '6380', '6095', '6112', '5925', '6246', '5985', '5692', '6261', '5734', '6337', '5966', '6004', '6151', '6161', '5917', '5863', '6300', '5732', '5547', '5851', '6295', '5787', '5864', '5545', '6356', '6175', '6154', '5680', '5799', '5500', '5969', '6301', '5622', '6071', '6030', '5655', '6299', '5519', '5818', '6064', '6054', '5646', '6166', '6272', '5610', '5705', '5956', '5820', '5920', '5581', '6268', '6027', '6074', '6087', '5668', '5794', '5880', '6173', '6434', '6374', '6008', '5807', '5739', '6307', '6437', '5619', '6451', '5618', '5628', '5932', '6235', '6190', '6225', '5629', '5911', '6257', '6410', '6304', '6140', '6395', '5817', '6284', '5927', '6010', '5639', '5758', '6098', '6051', '6239', '5979', '6281', '6417', '5903', '5675', '6456', '5795', '5527', '6242', '6387', '6090', '5623', '5890', '6322', '6418', '6110', '6254', '5620', '5537', '5573', '6359', '5612', '6325', '5513', '6044', '5918', '6473', '6148', '6341', '5543', '6448', '6101', '6280', '6222', '6438', '5981', '6152', '5532', '5626', '6491', '5591', '6170', '5953', '6115', '5744', '6179', '5632', '5861', '6421', '6377', '6245', '5852', '5835', '5625', '6289', '5657', '6111', '5768', '5504', '5741', '5606', '6480', '6167', '6096', '6005', '5522', '5974', '6435', '5643', '6290', '5780', '6444', '6083', '5989', '5893', '5539', '6347', '6016', '6210', '6391', '5789', '5967', '5778', '6035', '6476', '5836', '5702', '6003', '5881', '5714', '6002', '6024', '6203', '6119', '5656', '5691', '5944', '5935', '6046', '5763', '6032', '6266', '6250', '5997', '6207', '6092', '6103', '6043', '5999', '5725', '5552', '6007', '6314', '6159', '5844', '5633', '6269', '5720', '5961', '5583', '6446', '5877', '6171', '6199', '6315', '6271', '5756', '6497', '6383', '5704', '5585', '6144', '6384', '6426', '6285', '5611', '6439', '6351', '5574', '5609', '5905', '5538', '5824', '6149', '6036', '5728', '5515', '5929', '6422', '5644', '6366', '5900', '6354', '6121', '5669', '6394', '5703', '5978', '6022', '6085', '5604', '6436', '5688', '6079', '5767', '6378', '5541', '6398', '6265', '6174', '5809', '5819', '6428', '6163', '5660', '6342', '6097', '6128', '6114', '6183', '5685', '5711', '6277', '6089', '5584', '6201', '6305', '6427', '5975', '5642', '6048', '6091', '6130', '5673', '5621', '5993', '5528', '6353', '6345', '6241', '6041', '6137', '6019', '5810', '6385', '6000', '6169', '6298', '6078', '5699', '6358', '5588', '5546', '5678', '5627', '6106', '5785', '6055', '6425', '5906', '5928', '6415', '6182', '6075', '5962', '6052', '6382', '6145', '6129', '6498', '5904', '5779', '5520', '5784', '5783', '6334', '5970', '6205', '5847', '6441', '6066', '6365', '6176', '5849', '6371', '6326', '5686', '5708', '6180', '5814', '5636', '6431', '6405', '6070', '5869', '6077', '5738', '6080', '6496', '5950', '5806', '5782', '5827', '5896', '5598', '5746', '6014', '5742', '6465', '6123', '5964', '6038', '6218', '6020', '5727', '5888', '5530', '6389', '6061', '6483', '6031', '5901', '6393', '6466', '6320', '5666', '5805', '6168', '5986', '5833', '6143', '6181', '5635', '5681', '6447', '6047', '5570', '5898', '5560', '5931', '6126', '6053', '5823', '5566', '5526', '5858', '5548', '6209', '6336', '6011', '5587', '5677', '6082', '5891', '5839', '5874', '5579', '6214', '6397', '5568', '6263', '5991', '5972', '6081', '6490', '6267', '6310', '6248', '5937', '6216', '6333', '5608', '5875', '5551', '6445', '5983', '5848', '5954', '6262', '5762', '6146', '6191', '6206', '6355', '6244', '5868', '5980', '6423', '5922', '6099', '5933', '5614', '5713', '6317', '6312', '5984', '6255', '6187', '6162', '5930', '5690', '5813', '6192', '6400', '5533', '5973', '6150', '6308', '6313', '6125', '6124', '5733', '5951', '5957', '5662', '5765', '5501', '5894', '5797', '5729', '5730', '6403', '6033', '6455', '5895', '6017', '5712', '6219', '5615', '6208', '6198', '6157', '5634', '6408', '5947', '5745', '5971', '6228', '6296', '5843', '5804', '6293', '6202', '5716', '5846', '6461', '5569', '6006', '5603', '6135', '6360', '5717', '6193', '5792', '5775', '5507', '6243', '5872', '6499', '5736', '6158', '6340', '5995', '6311', '6258', '5938', '6479', '5572', '5882', '6195', '6297', '5943', '5825', '6328', '6330', '5679', '6319', '6236', '6485', '6414', '5908', '6001', '5558', '6396', '6486', '5757', '5803', '5700', '5593', '5866', '6433', '5726', '6240', '5830', '6449', '5575', '6478', '5564', '5915', '6034', '6072', '6484', '6375', '5976', '5631', '6138', '5659', '6346', '6118', '6279', '5554', '6283', '5800', '5594', '5701', '6292', '5842', '5518', '6335', '5750', '6196', '5749', '6329', '6369', '5760', '6134', '5661', '6188', '5542', '6127', '6062', '6352', '6270', '5761', '6165', '6376', '6049', '5687', '6364', '5696', '6367', '5990', '5771', '6057', '6094', '5815', '6039', '5759', '5949', '5563', '5590', '5853', '6009', '5907', '5834', '5982', '5664', '6316', '5557', '6067', '6249', '6142', '6357', '5790', '5647', '5808', '5860', '6012']
+
+1000.times do
+  x = a1 | a2
+  y = a2 | a1
+end
diff --git a/benchmark/bm_array_uniq_bang_numbers.rb b/benchmark/bm_array_uniq_bang_numbers.rb
new file mode 100644
index 00000000..8c36a6a1
--- /dev/null
+++ b/benchmark/bm_array_uniq_bang_numbers.rb
@@ -0,0 +1,5 @@
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+
+1000.times do
+  a.uniq!
+end
diff --git a/benchmark/bm_array_uniq_bang_objects.rb b/benchmark/bm_array_uniq_bang_objects.rb
new file mode 100644
index 00000000..11e163b7
--- /dev/null
+++ b/benchmark/bm_array_uniq_bang_objects.rb
@@ -0,0 +1,5 @@
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+
+1000.times do
+  a.uniq!
+end
diff --git a/benchmark/bm_array_uniq_bang_strings.rb b/benchmark/bm_array_uniq_bang_strings.rb
new file mode 100644
index 00000000..1e9b2d3b
--- /dev/null
+++ b/benchmark/bm_array_uniq_bang_strings.rb
@@ -0,0 +1,5 @@
+a = ['4768', '4964', '4266', '4872', '4231', '4017', '4565', '4793', '4298', '4135', '4639', '4780', '4237', '4548', '4655', '4153', '4654', '4922', '4563', '4042', '4329', '4699', '4352', '4127', '4544', '4906', '4814', '4948', '4977', '4830', '4405', '4642', '4666', '4402', '4679', '4465', '4401', '4155', '4767', '4510', '4747', '4993', '4508', '4697', '4758', '4133', '4348', '4200', '4442', '4970', '4452', '4041', '4103', '4567', '4937', '4047', '4933', '4121', '4860', '4659', '4221', '4312', '4583', '4473', '4973', '4262', '4630', '4123', '4139', '4289', '4147', '4222', '4050', '4019', '4454', '4253', '4552', '4947', '4725', '4457', '4929', '4021', '4502', '4307', '4576', '4124', '4586', '4610', '4027', '4572', '4926', '4753', '4185', '4382', '4394', '4923', '4186', '4254', '4012', '4417', '4556', '4349', '4550', '4330', '4938', '4985', '4778', '4716', '4924', '4045', '4358', '4189', '4591', '4213', '4851', '4825', '4260', '4198', '4342', '4824', '4333', '4244', '4752', '4994', '4488', '4532', '4082', '4595', '4098', '4436', '4540', '4267', '4407', '4998', '4751', '4535', '4861', '4819', '4419', '4031', '4029', '4453', '4698', '4965', '4450', '4668', '4036', '4300', '4519', '4281', '4981', '4818', '4939', '4378', '4140', '4841', '4249', '4290', '4388', '4878', '4884', '4235', '4515', '4638', '4410', '4054', '4383', '4238', '4870', '4295', '4804', '4308', '4614', '4105', '4053', '4446', '4757', '4971', '4637', '4831', '4193', '4912', '4000', '4187', '4606', '4566', '4169', '4641', '4749', '4729', '4928', '4601', '4949', '4210', '4313', '4647', '4495', '4460', '4621', '4605', '4694', '4317', '4226', '4263', '4016', '4997', '4940', '4715', '4907', '4620', '4934', '4996', '4955', '4688', '4304', '4220', '4882', '4772', '4536', '4815', '4693', '4469', '4276', '4409', '4071', '4224', '4020', '4629', '4865', '4813', '4366', '4622', '4129', '4533', '4634', '4564', '4087', '4386', '4161', '4265', '4711', '4009', '4376', '4781', '4837', '4112', '4915', '4592', '4658', '4025', '4987', '4291', '4477', '4503', '4437', '4111', '4707', '4879', '4611', '4549', '4078', '4044', '4853', '4835', '4463', '4577', '4008', '4233', '4741', '4384', '4225', '4024', '4726', '4743', '4160', '4180', '4722', '4609', '4114', '4834', '4742', '4662', '4984', '4299', '4060', '4498', '4755', '4320', '4874', '4528', '4216', '4852', '4951', '4958', '4283', '4239', '4476', '4644', '4143', '4104', '4455', '4126', '4950', '4663', '4013', '4931', '4850', '4242', '4130', '4623', '4871', '4014', '4854', '4293', '4512', '4166', '4740', '4735', '4150', '4651', '4172', '4836', '4530', '4664', '4429', '4511', '4558', '4676', '4085', '4074', '4580', '4794', '4379', '4310', '4817', '4966', '4848', '4202', '4336', '4608', '4351', '4396', '4652', '4033', '4188', '4431', '4916', '4259', '4607', '4816', '4810', '4627', '4527', '4560', '4728', '4589', '4274', '4809', '4790', '4398', '4414', '4516', '4581', '4919', '4665', '4331', '4978', '4543', '4877', '4974', '4284', '4004', '4177', '4466', '4116', '4217', '4901', '4372', '4137', '4806', '4264', '4497', '4294', '4787', '4212', '4215', '4115', '4782', '4739', '4821', '4125', '4505', '4230', '4399', '4395', '4079', '4867', '4381', '4706', '4695', '4404', '4691', '4075', '4353', '4301', '4876', '4731', '4523', '4246', '4529', '4412', '4784', '4449', '4229', '4616', '4158', '4002', '4318', '4377', '4205', '4911', '4777', '4792', '4271', '4763', '4141', '4287', '4890', '4279', '4829', '4646', '4840', '4089', '4880', '4067', '4918', '4059', '4109', '4164', '4863', '4883', '4909', '4361', '4174', '4960', '4302', '4003', '4236', '4846', '4034', '4324', '4513', '4765', '4596', '4900', '4007', '4603', '4474', '4439', '4805', '4015', '4496', '4953', '4363', '4551', '4459', '4063', '4983', '4881', '4365', '4604', '4587', '4798', '4005', '4163', '4421', '4471', '4826', '4144', '4635', '4600', '4913', '4640', '4247', '4766', '4779', '4280', '4391', '4891', '4636', '4546', '4683', '4181', '4081', '4862', '4458', '4037', '4321', '4786', '4717', '4628', '4154', '4326', '4032', '4873', '4151', '4905', '4270', '4156', '4733', '4980', '4866', '4325', '4055', '4467', '4480', '4286', '4191', '4762', '4322', '4574', '4022', '4056', '4770', '4451', '4448', '4845', '4341', '4433', '4245', '4684', '4671', '4093', '4920', '4272', '4745', '4799', '4761', '4250', '4578', '4347', '4499', '4526', '4369', '4162', '4537', '4434', '4893', '4120', '4962', '4667', '4525', '4091', '4462', '4182', '4738', '4935', '4173', '4490', '4571', '4424', '4894', '4051', '4214', '4823', '4096', '4206', '4598', '4943', '4701', '4649', '4807', '4107', '4435', '4456', '4083', '4612', '4721', '4472', '4146', '4925', '4340', '4789', '4277', '4375', '4211', '4427', '4547', '4690', '4613', '4727', '4006', '4203', '4430', '4223', '4039', '4932', '4296', '4108', '4278', '4832', '4422', '4917', '4470', '4183', '4887', '4076', '4485', '4597', '4443', '4257', '4991', '4944', '4196', '4672', '4397', '4097', '4119', '4077', '4773', '4602', '4538', '4479', '4968', '4159', '4539', '4956', '4710', '4812', '4902', '4569', '4954', '4385', '4128', '4936', '4416', '4148', '4632', '4759', '4117', '4896', '4392', '4864', '4316', '4132', '4319', '4969', '4175', '4484', '4903', '4910', '4350', '4332', '4952', '4176', '4594', '4709', '4509', '4178', '4167', '4545', '4857', '4617', '4501', '4859', '4207', '4275', '4687', '4049', '4579', '4046', '4921', '4113', '4898', '4681', '4052', '4415', '4064', '4184', '4895', '4744', '4685', '4084', '4305', '4899', '4559', '4208', '4057', '4507', '4258', '4355', '4086', '4373', '4323', '4541', '4297', '4483', '4889', '4531', '4327', '4441', '4914', '4303', '4677', '4445', '4802', '4343', '4585', '4338', '4524', '4590', '4624', '4288', '4704', '4134', '4043', '4720', '4058', '4328', '4095', '4026', '4423', '4657', '4118', '4633', '4487', '4822', '4904', '4255', '4001', '4387', '4500', '4190', '4686', '4995', '4661', '4783', '4992', '4165', '4065', '4927', '4306', '4856', '4292', '4420', '4963', '4468', '4240', '4724', '4432', '4447', '4518', '4028', '4670', '4339', '4771', '4018', '4489', '4110', '4708', '4945', '4136', '4492', '4930', '4090', '4734', '4886', '4542', '4227', '4486', '4491', '4713', '4986', '4068', '4048', '4975', '4570', '4842', '4475', '4131', '4555', '4428', '4776', '4101', '4273', '4811', '4345', '5000', '4653', '4256', '4209', '4769', '4946', '4561', '4080', '4461', '4820', '4311', '4959', '4750', '4795', '4748', '4368', '4506', '4335', '4346', '4568', '4675', '4692', '4774', '4413', '4370', '4723', '4521', '4885', '4678', '4897', '4066', '4674', '4106', '4626', '4389', '4204', '4839', '4023', '4712', '4145', '4035', '4357', '4756', '4648', '4972', '4157', '4406', '4615', '4061', '4219', '4791', '4660', '4073', '4356', '4072', '4599', '4359', '4094', '4673', '4696', '4796', '4282', '4714', '4522', '4736', '4775', '4760', '4400', '4847', '4228', '4803', '4908', '4732', '4645', '4122', '4218', '4478', '4941', '4892', '4364', '4403', '4152', '4444', '4360', '4354', '4241', '4494', '4367', '4808', '4261', '4088', '4573', '4554', '4248', '4371', '4393', '4268', '4201', '4038', '4788', '4593', '4040', '4801', '4582', '4309', '4976', '4374', '4869', '4380', '4514', '4243', '4362', '4849', '4680', '4888', '4764', '4618', '4838', '4828', '4643', '4010', '4827', '4957', '4099', '4875', '4843', '4737', '4102', '4979', '4011', '4504', '4440', '4746', '4557', '4426', '4553', '4656', '4868', '4689', '4988', '4703', '4967', '4069', '4619', '4334', '4669', '4785', '4464', '4562', '4961', '4625', '4754', '4797', '4481', '4705', '4199', '4337', '4062', '4138', '4702', '4534', '4168', '4418', '4092', '4682', '4520', '4030', '4171', '4650', '4858', '4411', '4999', '4252', '4197', '4170', '4942', '4631', '4990', '4179', '4285', '4700', '4482', '4575', '4800', '4070', '4251', '4344', '4982', '4719', '4390', '4149', '4100', '4194', '4269', '4855', '4314', '4718', '4232', '4730', '4438', '4588', '4195', '4192', '4493', '4517', '4833', '4234', '4989', '4315', '4844', '4142', '4408', '4584', '4425']
+
+1000.times do
+  a.uniq!
+end
diff --git a/benchmark/bm_array_uniq_numbers.rb b/benchmark/bm_array_uniq_numbers.rb
new file mode 100644
index 00000000..1f3630a2
--- /dev/null
+++ b/benchmark/bm_array_uniq_numbers.rb
@@ -0,0 +1,5 @@
+a = [4768, 4964, 4266, 4872, 4231, 4017, 4565, 4793, 4298, 4135, 4639, 4780, 4237, 4548, 4655, 4153, 4654, 4922, 4563, 4042, 4329, 4699, 4352, 4127, 4544, 4906, 4814, 4948, 4977, 4830, 4405, 4642, 4666, 4402, 4679, 4465, 4401, 4155, 4767, 4510, 4747, 4993, 4508, 4697, 4758, 4133, 4348, 4200, 4442, 4970, 4452, 4041, 4103, 4567, 4937, 4047, 4933, 4121, 4860, 4659, 4221, 4312, 4583, 4473, 4973, 4262, 4630, 4123, 4139, 4289, 4147, 4222, 4050, 4019, 4454, 4253, 4552, 4947, 4725, 4457, 4929, 4021, 4502, 4307, 4576, 4124, 4586, 4610, 4027, 4572, 4926, 4753, 4185, 4382, 4394, 4923, 4186, 4254, 4012, 4417, 4556, 4349, 4550, 4330, 4938, 4985, 4778, 4716, 4924, 4045, 4358, 4189, 4591, 4213, 4851, 4825, 4260, 4198, 4342, 4824, 4333, 4244, 4752, 4994, 4488, 4532, 4082, 4595, 4098, 4436, 4540, 4267, 4407, 4998, 4751, 4535, 4861, 4819, 4419, 4031, 4029, 4453, 4698, 4965, 4450, 4668, 4036, 4300, 4519, 4281, 4981, 4818, 4939, 4378, 4140, 4841, 4249, 4290, 4388, 4878, 4884, 4235, 4515, 4638, 4410, 4054, 4383, 4238, 4870, 4295, 4804, 4308, 4614, 4105, 4053, 4446, 4757, 4971, 4637, 4831, 4193, 4912, 4000, 4187, 4606, 4566, 4169, 4641, 4749, 4729, 4928, 4601, 4949, 4210, 4313, 4647, 4495, 4460, 4621, 4605, 4694, 4317, 4226, 4263, 4016, 4997, 4940, 4715, 4907, 4620, 4934, 4996, 4955, 4688, 4304, 4220, 4882, 4772, 4536, 4815, 4693, 4469, 4276, 4409, 4071, 4224, 4020, 4629, 4865, 4813, 4366, 4622, 4129, 4533, 4634, 4564, 4087, 4386, 4161, 4265, 4711, 4009, 4376, 4781, 4837, 4112, 4915, 4592, 4658, 4025, 4987, 4291, 4477, 4503, 4437, 4111, 4707, 4879, 4611, 4549, 4078, 4044, 4853, 4835, 4463, 4577, 4008, 4233, 4741, 4384, 4225, 4024, 4726, 4743, 4160, 4180, 4722, 4609, 4114, 4834, 4742, 4662, 4984, 4299, 4060, 4498, 4755, 4320, 4874, 4528, 4216, 4852, 4951, 4958, 4283, 4239, 4476, 4644, 4143, 4104, 4455, 4126, 4950, 4663, 4013, 4931, 4850, 4242, 4130, 4623, 4871, 4014, 4854, 4293, 4512, 4166, 4740, 4735, 4150, 4651, 4172, 4836, 4530, 4664, 4429, 4511, 4558, 4676, 4085, 4074, 4580, 4794, 4379, 4310, 4817, 4966, 4848, 4202, 4336, 4608, 4351, 4396, 4652, 4033, 4188, 4431, 4916, 4259, 4607, 4816, 4810, 4627, 4527, 4560, 4728, 4589, 4274, 4809, 4790, 4398, 4414, 4516, 4581, 4919, 4665, 4331, 4978, 4543, 4877, 4974, 4284, 4004, 4177, 4466, 4116, 4217, 4901, 4372, 4137, 4806, 4264, 4497, 4294, 4787, 4212, 4215, 4115, 4782, 4739, 4821, 4125, 4505, 4230, 4399, 4395, 4079, 4867, 4381, 4706, 4695, 4404, 4691, 4075, 4353, 4301, 4876, 4731, 4523, 4246, 4529, 4412, 4784, 4449, 4229, 4616, 4158, 4002, 4318, 4377, 4205, 4911, 4777, 4792, 4271, 4763, 4141, 4287, 4890, 4279, 4829, 4646, 4840, 4089, 4880, 4067, 4918, 4059, 4109, 4164, 4863, 4883, 4909, 4361, 4174, 4960, 4302, 4003, 4236, 4846, 4034, 4324, 4513, 4765, 4596, 4900, 4007, 4603, 4474, 4439, 4805, 4015, 4496, 4953, 4363, 4551, 4459, 4063, 4983, 4881, 4365, 4604, 4587, 4798, 4005, 4163, 4421, 4471, 4826, 4144, 4635, 4600, 4913, 4640, 4247, 4766, 4779, 4280, 4391, 4891, 4636, 4546, 4683, 4181, 4081, 4862, 4458, 4037, 4321, 4786, 4717, 4628, 4154, 4326, 4032, 4873, 4151, 4905, 4270, 4156, 4733, 4980, 4866, 4325, 4055, 4467, 4480, 4286, 4191, 4762, 4322, 4574, 4022, 4056, 4770, 4451, 4448, 4845, 4341, 4433, 4245, 4684, 4671, 4093, 4920, 4272, 4745, 4799, 4761, 4250, 4578, 4347, 4499, 4526, 4369, 4162, 4537, 4434, 4893, 4120, 4962, 4667, 4525, 4091, 4462, 4182, 4738, 4935, 4173, 4490, 4571, 4424, 4894, 4051, 4214, 4823, 4096, 4206, 4598, 4943, 4701, 4649, 4807, 4107, 4435, 4456, 4083, 4612, 4721, 4472, 4146, 4925, 4340, 4789, 4277, 4375, 4211, 4427, 4547, 4690, 4613, 4727, 4006, 4203, 4430, 4223, 4039, 4932, 4296, 4108, 4278, 4832, 4422, 4917, 4470, 4183, 4887, 4076, 4485, 4597, 4443, 4257, 4991, 4944, 4196, 4672, 4397, 4097, 4119, 4077, 4773, 4602, 4538, 4479, 4968, 4159, 4539, 4956, 4710, 4812, 4902, 4569, 4954, 4385, 4128, 4936, 4416, 4148, 4632, 4759, 4117, 4896, 4392, 4864, 4316, 4132, 4319, 4969, 4175, 4484, 4903, 4910, 4350, 4332, 4952, 4176, 4594, 4709, 4509, 4178, 4167, 4545, 4857, 4617, 4501, 4859, 4207, 4275, 4687, 4049, 4579, 4046, 4921, 4113, 4898, 4681, 4052, 4415, 4064, 4184, 4895, 4744, 4685, 4084, 4305, 4899, 4559, 4208, 4057, 4507, 4258, 4355, 4086, 4373, 4323, 4541, 4297, 4483, 4889, 4531, 4327, 4441, 4914, 4303, 4677, 4445, 4802, 4343, 4585, 4338, 4524, 4590, 4624, 4288, 4704, 4134, 4043, 4720, 4058, 4328, 4095, 4026, 4423, 4657, 4118, 4633, 4487, 4822, 4904, 4255, 4001, 4387, 4500, 4190, 4686, 4995, 4661, 4783, 4992, 4165, 4065, 4927, 4306, 4856, 4292, 4420, 4963, 4468, 4240, 4724, 4432, 4447, 4518, 4028, 4670, 4339, 4771, 4018, 4489, 4110, 4708, 4945, 4136, 4492, 4930, 4090, 4734, 4886, 4542, 4227, 4486, 4491, 4713, 4986, 4068, 4048, 4975, 4570, 4842, 4475, 4131, 4555, 4428, 4776, 4101, 4273, 4811, 4345, 5000, 4653, 4256, 4209, 4769, 4946, 4561, 4080, 4461, 4820, 4311, 4959, 4750, 4795, 4748, 4368, 4506, 4335, 4346, 4568, 4675, 4692, 4774, 4413, 4370, 4723, 4521, 4885, 4678, 4897, 4066, 4674, 4106, 4626, 4389, 4204, 4839, 4023, 4712, 4145, 4035, 4357, 4756, 4648, 4972, 4157, 4406, 4615, 4061, 4219, 4791, 4660, 4073, 4356, 4072, 4599, 4359, 4094, 4673, 4696, 4796, 4282, 4714, 4522, 4736, 4775, 4760, 4400, 4847, 4228, 4803, 4908, 4732, 4645, 4122, 4218, 4478, 4941, 4892, 4364, 4403, 4152, 4444, 4360, 4354, 4241, 4494, 4367, 4808, 4261, 4088, 4573, 4554, 4248, 4371, 4393, 4268, 4201, 4038, 4788, 4593, 4040, 4801, 4582, 4309, 4976, 4374, 4869, 4380, 4514, 4243, 4362, 4849, 4680, 4888, 4764, 4618, 4838, 4828, 4643, 4010, 4827, 4957, 4099, 4875, 4843, 4737, 4102, 4979, 4011, 4504, 4440, 4746, 4557, 4426, 4553, 4656, 4868, 4689, 4988, 4703, 4967, 4069, 4619, 4334, 4669, 4785, 4464, 4562, 4961, 4625, 4754, 4797, 4481, 4705, 4199, 4337, 4062, 4138, 4702, 4534, 4168, 4418, 4092, 4682, 4520, 4030, 4171, 4650, 4858, 4411, 4999, 4252, 4197, 4170, 4942, 4631, 4990, 4179, 4285, 4700, 4482, 4575, 4800, 4070, 4251, 4344, 4982, 4719, 4390, 4149, 4100, 4194, 4269, 4855, 4314, 4718, 4232, 4730, 4438, 4588, 4195, 4192, 4493, 4517, 4833, 4234, 4989, 4315, 4844, 4142, 4408, 4584, 4425]
+
+1000.times do
+  x = a.uniq
+end
diff --git a/benchmark/bm_array_uniq_objects.rb b/benchmark/bm_array_uniq_objects.rb
new file mode 100644
index 00000000..b1529961
--- /dev/null
+++ b/benchmark/bm_array_uniq_objects.rb
@@ -0,0 +1,5 @@
+a = [Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, Object.new, 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+
+1000.times do
+  x = a.uniq
+end
diff --git a/benchmark/bm_constant_lookup_big.rb b/benchmark/bm_constant_lookup_big.rb
new file mode 100644
index 00000000..af2c2eee
--- /dev/null
+++ b/benchmark/bm_constant_lookup_big.rb
@@ -0,0 +1,799 @@
+module Scope0
+  CONST0 = 0
+  module Scope1
+    CONST1 = 1
+    CONST0
+    module Scope2
+      CONST2 = 2
+      CONST0
+      module Scope3
+        CONST3 = 3
+        CONST1
+        module Scope4
+          CONST4 = 4
+          CONST0
+          module Scope5
+            CONST5 = 5
+            CONST2
+            module Scope6
+              CONST6 = 6
+              CONST1
+              module Scope7
+                CONST7 = 7
+                CONST3
+                module Scope8
+                  CONST8 = 8
+                  CONST6
+                  module Scope9
+                    CONST9 = 9
+                    CONST1
+                    module Scope10
+                      CONST10 = 10
+                      CONST5
+                      module Scope11
+                        CONST11 = 11
+                        CONST10
+                        module Scope12
+                          CONST12 = 12
+                          CONST3
+                          module Scope13
+                            CONST13 = 13
+                            CONST8
+                            module Scope14
+                              CONST14 = 14
+                              CONST9
+                              module Scope15
+                                CONST15 = 15
+                                CONST12
+                                module Scope16
+                                  CONST16 = 16
+                                  CONST6
+                                  module Scope17
+                                    CONST17 = 17
+                                    CONST2
+                                    module Scope18
+                                      CONST18 = 18
+                                      CONST13
+                                      module Scope19
+                                        CONST19 = 19
+                                        CONST7
+                                        module Scope20
+                                          CONST20 = 20
+                                          CONST3
+                                          module Scope21
+                                            CONST21 = 21
+                                            CONST0
+                                            module Scope22
+                                              CONST22 = 22
+                                              CONST20
+                                              module Scope23
+                                                CONST23 = 23
+                                                CONST3
+                                                module Scope24
+                                                  CONST24 = 24
+                                                  CONST8
+                                                  module Scope25
+                                                    CONST25 = 25
+                                                    CONST5
+                                                    module Scope26
+                                                      CONST26 = 26
+                                                      CONST24
+                                                      module Scope27
+                                                        CONST27 = 27
+                                                        CONST19
+                                                        module Scope28
+                                                          CONST28 = 28
+                                                          CONST3
+                                                          module Scope29
+                                                            CONST29 = 29
+                                                            CONST5
+                                                            module Scope30
+                                                              CONST30 = 30
+                                                              CONST3
+                                                              module Scope31
+                                                                CONST31 = 31
+                                                                CONST12
+                                                                module Scope32
+                                                                  CONST32 = 32
+                                                                  CONST11
+                                                                  module Scope33
+                                                                    CONST33 = 33
+                                                                    CONST31
+                                                                    module Scope34
+                                                                      CONST34 = 34
+                                                                      CONST12
+                                                                      module Scope35
+                                                                        CONST35 = 35
+                                                                        CONST5
+                                                                        module Scope36
+                                                                          CONST36 = 36
+                                                                          CONST22
+                                                                          module Scope37
+                                                                            CONST37 = 37
+                                                                            CONST20
+                                                                            module Scope38
+                                                                              CONST38 = 38
+                                                                              CONST27
+                                                                              module Scope39
+                                                                                CONST39 = 39
+                                                                                CONST7
+                                                                                module Scope40
+                                                                                  CONST40 = 40
+                                                                                  CONST38
+                                                                                  module Scope41
+                                                                                    CONST41 = 41
+                                                                                    CONST35
+                                                                                    module Scope42
+                                                                                      CONST42 = 42
+                                                                                      CONST37
+                                                                                      module Scope43
+                                                                                        CONST43 = 43
+                                                                                        CONST32
+                                                                                        module Scope44
+                                                                                          CONST44 = 44
+                                                                                          CONST28
+                                                                                          module Scope45
+                                                                                            CONST45 = 45
+                                                                                            CONST20
+                                                                                            module Scope46
+                                                                                              CONST46 = 46
+                                                                                              CONST43
+                                                                                              module Scope47
+                                                                                                CONST47 = 47
+                                                                                                CONST2
+                                                                                                module Scope48
+                                                                                                  CONST48 = 48
+                                                                                                  CONST41
+                                                                                                  module Scope49
+                                                                                                    CONST49 = 49
+                                                                                                    CONST46
+                                                                                                    module Scope50
+                                                                                                      CONST50 = 50
+                                                                                                      CONST17
+                                                                                                      module Scope51
+                                                                                                        CONST51 = 51
+                                                                                                        CONST38
+                                                                                                        module Scope52
+                                                                                                          CONST52 = 52
+                                                                                                          CONST49
+                                                                                                          module Scope53
+                                                                                                            CONST53 = 53
+                                                                                                            CONST9
+                                                                                                            module Scope54
+                                                                                                              CONST54 = 54
+                                                                                                              CONST5
+                                                                                                              module Scope55
+                                                                                                                CONST55 = 55
+                                                                                                                CONST41
+                                                                                                                module Scope56
+                                                                                                                  CONST56 = 56
+                                                                                                                  CONST11
+                                                                                                                  module Scope57
+                                                                                                                    CONST57 = 57
+                                                                                                                    CONST48
+                                                                                                                    module Scope58
+                                                                                                                      CONST58 = 58
+                                                                                                                      CONST30
+                                                                                                                      module Scope59
+                                                                                                                        CONST59 = 59
+                                                                                                                        CONST53
+                                                                                                                        module Scope60
+                                                                                                                          CONST60 = 60
+                                                                                                                          CONST40
+                                                                                                                          module Scope61
+                                                                                                                            CONST61 = 61
+                                                                                                                            CONST42
+                                                                                                                            module Scope62
+                                                                                                                              CONST62 = 62
+                                                                                                                              CONST52
+                                                                                                                              module Scope63
+                                                                                                                                CONST63 = 63
+                                                                                                                                CONST15
+                                                                                                                                module Scope64
+                                                                                                                                  CONST64 = 64
+                                                                                                                                  CONST5
+                                                                                                                                  module Scope65
+                                                                                                                                    CONST65 = 65
+                                                                                                                                    CONST62
+                                                                                                                                    module Scope66
+                                                                                                                                      CONST66 = 66
+                                                                                                                                      CONST43
+                                                                                                                                      module Scope67
+                                                                                                                                        CONST67 = 67
+                                                                                                                                        CONST24
+                                                                                                                                        module Scope68
+                                                                                                                                          CONST68 = 68
+                                                                                                                                          CONST48
+                                                                                                                                          module Scope69
+                                                                                                                                            CONST69 = 69
+                                                                                                                                            CONST34
+                                                                                                                                            module Scope70
+                                                                                                                                              CONST70 = 70
+                                                                                                                                              CONST24
+                                                                                                                                              module Scope71
+                                                                                                                                                CONST71 = 71
+                                                                                                                                                CONST12
+                                                                                                                                                module Scope72
+                                                                                                                                                  CONST72 = 72
+                                                                                                                                                  CONST30
+                                                                                                                                                  module Scope73
+                                                                                                                                                    CONST73 = 73
+                                                                                                                                                    CONST72
+                                                                                                                                                    module Scope74
+                                                                                                                                                      CONST74 = 74
+                                                                                                                                                      CONST40
+                                                                                                                                                      module Scope75
+                                                                                                                                                        CONST75 = 75
+                                                                                                                                                        CONST36
+                                                                                                                                                        module Scope76
+                                                                                                                                                          CONST76 = 76
+                                                                                                                                                          CONST31
+                                                                                                                                                          module Scope77
+                                                                                                                                                            CONST77 = 77
+                                                                                                                                                            CONST30
+                                                                                                                                                            module Scope78
+                                                                                                                                                              CONST78 = 78
+                                                                                                                                                              CONST15
+                                                                                                                                                              module Scope79
+                                                                                                                                                                CONST79 = 79
+                                                                                                                                                                CONST1
+                                                                                                                                                                module Scope80
+                                                                                                                                                                  CONST80 = 80
+                                                                                                                                                                  CONST70
+                                                                                                                                                                  module Scope81
+                                                                                                                                                                    CONST81 = 81
+                                                                                                                                                                    CONST4
+                                                                                                                                                                    module Scope82
+                                                                                                                                                                      CONST82 = 82
+                                                                                                                                                                      CONST29
+                                                                                                                                                                      module Scope83
+                                                                                                                                                                        CONST83 = 83
+                                                                                                                                                                        CONST31
+                                                                                                                                                                        module Scope84
+                                                                                                                                                                          CONST84 = 84
+                                                                                                                                                                          CONST49
+                                                                                                                                                                          module Scope85
+                                                                                                                                                                            CONST85 = 85
+                                                                                                                                                                            CONST14
+                                                                                                                                                                            module Scope86
+                                                                                                                                                                              CONST86 = 86
+                                                                                                                                                                              CONST34
+                                                                                                                                                                              module Scope87
+                                                                                                                                                                                CONST87 = 87
+                                                                                                                                                                                CONST65
+                                                                                                                                                                                module Scope88
+                                                                                                                                                                                  CONST88 = 88
+                                                                                                                                                                                  CONST48
+                                                                                                                                                                                  module Scope89
+                                                                                                                                                                                    CONST89 = 89
+                                                                                                                                                                                    CONST70
+                                                                                                                                                                                    module Scope90
+                                                                                                                                                                                      CONST90 = 90
+                                                                                                                                                                                      CONST80
+                                                                                                                                                                                      module Scope91
+                                                                                                                                                                                        CONST91 = 91
+                                                                                                                                                                                        CONST67
+                                                                                                                                                                                        module Scope92
+                                                                                                                                                                                          CONST92 = 92
+                                                                                                                                                                                          CONST34
+                                                                                                                                                                                          module Scope93
+                                                                                                                                                                                            CONST93 = 93
+                                                                                                                                                                                            CONST1
+                                                                                                                                                                                            module Scope94
+                                                                                                                                                                                              CONST94 = 94
+                                                                                                                                                                                              CONST48
+                                                                                                                                                                                              module Scope95
+                                                                                                                                                                                                CONST95 = 95
+                                                                                                                                                                                                CONST18
+                                                                                                                                                                                                module Scope96
+                                                                                                                                                                                                  CONST96 = 96
+                                                                                                                                                                                                  CONST1
+                                                                                                                                                                                                  module Scope97
+                                                                                                                                                                                                    CONST97 = 97
+                                                                                                                                                                                                    CONST38
+                                                                                                                                                                                                    module Scope98
+                                                                                                                                                                                                      CONST98 = 98
+                                                                                                                                                                                                      CONST37
+                                                                                                                                                                                                      module Scope99
+                                                                                                                                                                                                        CONST99 = 99
+                                                                                                                                                                                                        CONST19
+                                                                                                                                                                                                        module Scope100
+                                                                                                                                                                                                          CONST100 = 100
+                                                                                                                                                                                                          CONST45
+                                                                                                                                                                                                          module Scope101
+                                                                                                                                                                                                            CONST101 = 101
+                                                                                                                                                                                                            CONST26
+                                                                                                                                                                                                            module Scope102
+                                                                                                                                                                                                              CONST102 = 102
+                                                                                                                                                                                                              CONST94
+                                                                                                                                                                                                              module Scope103
+                                                                                                                                                                                                                CONST103 = 103
+                                                                                                                                                                                                                CONST1
+                                                                                                                                                                                                                module Scope104
+                                                                                                                                                                                                                  CONST104 = 104
+                                                                                                                                                                                                                  CONST65
+                                                                                                                                                                                                                  module Scope105
+                                                                                                                                                                                                                    CONST105 = 105
+                                                                                                                                                                                                                    CONST20
+                                                                                                                                                                                                                    module Scope106
+                                                                                                                                                                                                                      CONST106 = 106
+                                                                                                                                                                                                                      CONST33
+                                                                                                                                                                                                                      module Scope107
+                                                                                                                                                                                                                        CONST107 = 107
+                                                                                                                                                                                                                        CONST51
+                                                                                                                                                                                                                        module Scope108
+                                                                                                                                                                                                                          CONST108 = 108
+                                                                                                                                                                                                                          CONST34
+                                                                                                                                                                                                                          module Scope109
+                                                                                                                                                                                                                            CONST109 = 109
+                                                                                                                                                                                                                            CONST104
+                                                                                                                                                                                                                            module Scope110
+                                                                                                                                                                                                                              CONST110 = 110
+                                                                                                                                                                                                                              CONST98
+                                                                                                                                                                                                                              module Scope111
+                                                                                                                                                                                                                                CONST111 = 111
+                                                                                                                                                                                                                                CONST64
+                                                                                                                                                                                                                                module Scope112
+                                                                                                                                                                                                                                  CONST112 = 112
+                                                                                                                                                                                                                                  CONST38
+                                                                                                                                                                                                                                  module Scope113
+                                                                                                                                                                                                                                    CONST113 = 113
+                                                                                                                                                                                                                                    CONST23
+                                                                                                                                                                                                                                    module Scope114
+                                                                                                                                                                                                                                      CONST114 = 114
+                                                                                                                                                                                                                                      CONST54
+                                                                                                                                                                                                                                      module Scope115
+                                                                                                                                                                                                                                        CONST115 = 115
+                                                                                                                                                                                                                                        CONST44
+                                                                                                                                                                                                                                        module Scope116
+                                                                                                                                                                                                                                          CONST116 = 116
+                                                                                                                                                                                                                                          CONST7
+                                                                                                                                                                                                                                          module Scope117
+                                                                                                                                                                                                                                            CONST117 = 117
+                                                                                                                                                                                                                                            CONST45
+                                                                                                                                                                                                                                            module Scope118
+                                                                                                                                                                                                                                              CONST118 = 118
+                                                                                                                                                                                                                                              CONST40
+                                                                                                                                                                                                                                              module Scope119
+                                                                                                                                                                                                                                                CONST119 = 119
+                                                                                                                                                                                                                                                CONST34
+                                                                                                                                                                                                                                                module Scope120
+                                                                                                                                                                                                                                                  CONST120 = 120
+                                                                                                                                                                                                                                                  CONST111
+                                                                                                                                                                                                                                                  module Scope121
+                                                                                                                                                                                                                                                    CONST121 = 121
+                                                                                                                                                                                                                                                    CONST15
+                                                                                                                                                                                                                                                    module Scope122
+                                                                                                                                                                                                                                                      CONST122 = 122
+                                                                                                                                                                                                                                                      CONST111
+                                                                                                                                                                                                                                                      module Scope123
+                                                                                                                                                                                                                                                        CONST123 = 123
+                                                                                                                                                                                                                                                        CONST114
+                                                                                                                                                                                                                                                        module Scope124
+                                                                                                                                                                                                                                                          CONST124 = 124
+                                                                                                                                                                                                                                                          CONST1
+                                                                                                                                                                                                                                                          module Scope125
+                                                                                                                                                                                                                                                            CONST125 = 125
+                                                                                                                                                                                                                                                            CONST106
+                                                                                                                                                                                                                                                            module Scope126
+                                                                                                                                                                                                                                                              CONST126 = 126
+                                                                                                                                                                                                                                                              CONST42
+                                                                                                                                                                                                                                                              module Scope127
+                                                                                                                                                                                                                                                                CONST127 = 127
+                                                                                                                                                                                                                                                                CONST39
+                                                                                                                                                                                                                                                                module Scope128
+                                                                                                                                                                                                                                                                  CONST128 = 128
+                                                                                                                                                                                                                                                                  CONST124
+                                                                                                                                                                                                                                                                  module Scope129
+                                                                                                                                                                                                                                                                    CONST129 = 129
+                                                                                                                                                                                                                                                                    CONST90
+                                                                                                                                                                                                                                                                    module Scope130
+                                                                                                                                                                                                                                                                      CONST130 = 130
+                                                                                                                                                                                                                                                                      CONST57
+                                                                                                                                                                                                                                                                      module Scope131
+                                                                                                                                                                                                                                                                        CONST131 = 131
+                                                                                                                                                                                                                                                                        CONST53
+                                                                                                                                                                                                                                                                        module Scope132
+                                                                                                                                                                                                                                                                          CONST132 = 132
+                                                                                                                                                                                                                                                                          CONST38
+                                                                                                                                                                                                                                                                          module Scope133
+                                                                                                                                                                                                                                                                            CONST133 = 133
+                                                                                                                                                                                                                                                                            CONST46
+                                                                                                                                                                                                                                                                            module Scope134
+                                                                                                                                                                                                                                                                              CONST134 = 134
+                                                                                                                                                                                                                                                                              CONST20
+                                                                                                                                                                                                                                                                              module Scope135
+                                                                                                                                                                                                                                                                                CONST135 = 135
+                                                                                                                                                                                                                                                                                CONST75
+                                                                                                                                                                                                                                                                                module Scope136
+                                                                                                                                                                                                                                                                                  CONST136 = 136
+                                                                                                                                                                                                                                                                                  CONST25
+                                                                                                                                                                                                                                                                                  module Scope137
+                                                                                                                                                                                                                                                                                    CONST137 = 137
+                                                                                                                                                                                                                                                                                    CONST26
+                                                                                                                                                                                                                                                                                    module Scope138
+                                                                                                                                                                                                                                                                                      CONST138 = 138
+                                                                                                                                                                                                                                                                                      CONST26
+                                                                                                                                                                                                                                                                                      module Scope139
+                                                                                                                                                                                                                                                                                        CONST139 = 139
+                                                                                                                                                                                                                                                                                        CONST26
+                                                                                                                                                                                                                                                                                        module Scope140
+                                                                                                                                                                                                                                                                                          CONST140 = 140
+                                                                                                                                                                                                                                                                                          CONST110
+                                                                                                                                                                                                                                                                                          module Scope141
+                                                                                                                                                                                                                                                                                            CONST141 = 141
+                                                                                                                                                                                                                                                                                            CONST20
+                                                                                                                                                                                                                                                                                            module Scope142
+                                                                                                                                                                                                                                                                                              CONST142 = 142
+                                                                                                                                                                                                                                                                                              CONST31
+                                                                                                                                                                                                                                                                                              module Scope143
+                                                                                                                                                                                                                                                                                                CONST143 = 143
+                                                                                                                                                                                                                                                                                                CONST9
+                                                                                                                                                                                                                                                                                                module Scope144
+                                                                                                                                                                                                                                                                                                  CONST144 = 144
+                                                                                                                                                                                                                                                                                                  CONST23
+                                                                                                                                                                                                                                                                                                  module Scope145
+                                                                                                                                                                                                                                                                                                    CONST145 = 145
+                                                                                                                                                                                                                                                                                                    CONST68
+                                                                                                                                                                                                                                                                                                    module Scope146
+                                                                                                                                                                                                                                                                                                      CONST146 = 146
+                                                                                                                                                                                                                                                                                                      CONST144
+                                                                                                                                                                                                                                                                                                      module Scope147
+                                                                                                                                                                                                                                                                                                        CONST147 = 147
+                                                                                                                                                                                                                                                                                                        CONST19
+                                                                                                                                                                                                                                                                                                        module Scope148
+                                                                                                                                                                                                                                                                                                          CONST148 = 148
+                                                                                                                                                                                                                                                                                                          CONST38
+                                                                                                                                                                                                                                                                                                          module Scope149
+                                                                                                                                                                                                                                                                                                            CONST149 = 149
+                                                                                                                                                                                                                                                                                                            CONST136
+                                                                                                                                                                                                                                                                                                            module Scope150
+                                                                                                                                                                                                                                                                                                              CONST150 = 150
+                                                                                                                                                                                                                                                                                                              CONST143
+                                                                                                                                                                                                                                                                                                              module Scope151
+                                                                                                                                                                                                                                                                                                                CONST151 = 151
+                                                                                                                                                                                                                                                                                                                CONST34
+                                                                                                                                                                                                                                                                                                                module Scope152
+                                                                                                                                                                                                                                                                                                                  CONST152 = 152
+                                                                                                                                                                                                                                                                                                                  CONST53
+                                                                                                                                                                                                                                                                                                                  module Scope153
+                                                                                                                                                                                                                                                                                                                    CONST153 = 153
+                                                                                                                                                                                                                                                                                                                    CONST20
+                                                                                                                                                                                                                                                                                                                    module Scope154
+                                                                                                                                                                                                                                                                                                                      CONST154 = 154
+                                                                                                                                                                                                                                                                                                                      CONST81
+                                                                                                                                                                                                                                                                                                                      module Scope155
+                                                                                                                                                                                                                                                                                                                        CONST155 = 155
+                                                                                                                                                                                                                                                                                                                        CONST69
+                                                                                                                                                                                                                                                                                                                        module Scope156
+                                                                                                                                                                                                                                                                                                                          CONST156 = 156
+                                                                                                                                                                                                                                                                                                                          CONST55
+                                                                                                                                                                                                                                                                                                                          module Scope157
+                                                                                                                                                                                                                                                                                                                            CONST157 = 157
+                                                                                                                                                                                                                                                                                                                            CONST6
+                                                                                                                                                                                                                                                                                                                            module Scope158
+                                                                                                                                                                                                                                                                                                                              CONST158 = 158
+                                                                                                                                                                                                                                                                                                                              CONST73
+                                                                                                                                                                                                                                                                                                                              module Scope159
+                                                                                                                                                                                                                                                                                                                                CONST159 = 159
+                                                                                                                                                                                                                                                                                                                                CONST31
+                                                                                                                                                                                                                                                                                                                                module Scope160
+                                                                                                                                                                                                                                                                                                                                  CONST160 = 160
+                                                                                                                                                                                                                                                                                                                                  CONST95
+                                                                                                                                                                                                                                                                                                                                  module Scope161
+                                                                                                                                                                                                                                                                                                                                    CONST161 = 161
+                                                                                                                                                                                                                                                                                                                                    CONST148
+                                                                                                                                                                                                                                                                                                                                    module Scope162
+                                                                                                                                                                                                                                                                                                                                      CONST162 = 162
+                                                                                                                                                                                                                                                                                                                                      CONST152
+                                                                                                                                                                                                                                                                                                                                      module Scope163
+                                                                                                                                                                                                                                                                                                                                        CONST163 = 163
+                                                                                                                                                                                                                                                                                                                                        CONST108
+                                                                                                                                                                                                                                                                                                                                        module Scope164
+                                                                                                                                                                                                                                                                                                                                          CONST164 = 164
+                                                                                                                                                                                                                                                                                                                                          CONST157
+                                                                                                                                                                                                                                                                                                                                          module Scope165
+                                                                                                                                                                                                                                                                                                                                            CONST165 = 165
+                                                                                                                                                                                                                                                                                                                                            CONST40
+                                                                                                                                                                                                                                                                                                                                            module Scope166
+                                                                                                                                                                                                                                                                                                                                              CONST166 = 166
+                                                                                                                                                                                                                                                                                                                                              CONST104
+                                                                                                                                                                                                                                                                                                                                              module Scope167
+                                                                                                                                                                                                                                                                                                                                                CONST167 = 167
+                                                                                                                                                                                                                                                                                                                                                CONST61
+                                                                                                                                                                                                                                                                                                                                                module Scope168
+                                                                                                                                                                                                                                                                                                                                                  CONST168 = 168
+                                                                                                                                                                                                                                                                                                                                                  CONST114
+                                                                                                                                                                                                                                                                                                                                                  module Scope169
+                                                                                                                                                                                                                                                                                                                                                    CONST169 = 169
+                                                                                                                                                                                                                                                                                                                                                    CONST36
+                                                                                                                                                                                                                                                                                                                                                    module Scope170
+                                                                                                                                                                                                                                                                                                                                                      CONST170 = 170
+                                                                                                                                                                                                                                                                                                                                                      CONST85
+                                                                                                                                                                                                                                                                                                                                                      module Scope171
+                                                                                                                                                                                                                                                                                                                                                        CONST171 = 171
+                                                                                                                                                                                                                                                                                                                                                        CONST153
+                                                                                                                                                                                                                                                                                                                                                        module Scope172
+                                                                                                                                                                                                                                                                                                                                                          CONST172 = 172
+                                                                                                                                                                                                                                                                                                                                                          CONST117
+                                                                                                                                                                                                                                                                                                                                                          module Scope173
+                                                                                                                                                                                                                                                                                                                                                            CONST173 = 173
+                                                                                                                                                                                                                                                                                                                                                            CONST45
+                                                                                                                                                                                                                                                                                                                                                            module Scope174
+                                                                                                                                                                                                                                                                                                                                                              CONST174 = 174
+                                                                                                                                                                                                                                                                                                                                                              CONST47
+                                                                                                                                                                                                                                                                                                                                                              module Scope175
+                                                                                                                                                                                                                                                                                                                                                                CONST175 = 175
+                                                                                                                                                                                                                                                                                                                                                                CONST25
+                                                                                                                                                                                                                                                                                                                                                                module Scope176
+                                                                                                                                                                                                                                                                                                                                                                  CONST176 = 176
+                                                                                                                                                                                                                                                                                                                                                                  CONST12
+                                                                                                                                                                                                                                                                                                                                                                  module Scope177
+                                                                                                                                                                                                                                                                                                                                                                    CONST177 = 177
+                                                                                                                                                                                                                                                                                                                                                                    CONST38
+                                                                                                                                                                                                                                                                                                                                                                    module Scope178
+                                                                                                                                                                                                                                                                                                                                                                      CONST178 = 178
+                                                                                                                                                                                                                                                                                                                                                                      CONST33
+                                                                                                                                                                                                                                                                                                                                                                      module Scope179
+                                                                                                                                                                                                                                                                                                                                                                        CONST179 = 179
+                                                                                                                                                                                                                                                                                                                                                                        CONST178
+                                                                                                                                                                                                                                                                                                                                                                        module Scope180
+                                                                                                                                                                                                                                                                                                                                                                          CONST180 = 180
+                                                                                                                                                                                                                                                                                                                                                                          CONST33
+                                                                                                                                                                                                                                                                                                                                                                          module Scope181
+                                                                                                                                                                                                                                                                                                                                                                            CONST181 = 181
+                                                                                                                                                                                                                                                                                                                                                                            CONST4
+                                                                                                                                                                                                                                                                                                                                                                            module Scope182
+                                                                                                                                                                                                                                                                                                                                                                              CONST182 = 182
+                                                                                                                                                                                                                                                                                                                                                                              CONST66
+                                                                                                                                                                                                                                                                                                                                                                              module Scope183
+                                                                                                                                                                                                                                                                                                                                                                                CONST183 = 183
+                                                                                                                                                                                                                                                                                                                                                                                CONST75
+                                                                                                                                                                                                                                                                                                                                                                                module Scope184
+                                                                                                                                                                                                                                                                                                                                                                                  CONST184 = 184
+                                                                                                                                                                                                                                                                                                                                                                                  CONST30
+                                                                                                                                                                                                                                                                                                                                                                                  module Scope185
+                                                                                                                                                                                                                                                                                                                                                                                    CONST185 = 185
+                                                                                                                                                                                                                                                                                                                                                                                    CONST141
+                                                                                                                                                                                                                                                                                                                                                                                    module Scope186
+                                                                                                                                                                                                                                                                                                                                                                                      CONST186 = 186
+                                                                                                                                                                                                                                                                                                                                                                                      CONST124
+                                                                                                                                                                                                                                                                                                                                                                                      module Scope187
+                                                                                                                                                                                                                                                                                                                                                                                        CONST187 = 187
+                                                                                                                                                                                                                                                                                                                                                                                        CONST27
+                                                                                                                                                                                                                                                                                                                                                                                        module Scope188
+                                                                                                                                                                                                                                                                                                                                                                                          CONST188 = 188
+                                                                                                                                                                                                                                                                                                                                                                                          CONST180
+                                                                                                                                                                                                                                                                                                                                                                                          module Scope189
+                                                                                                                                                                                                                                                                                                                                                                                            CONST189 = 189
+                                                                                                                                                                                                                                                                                                                                                                                            CONST39
+                                                                                                                                                                                                                                                                                                                                                                                            module Scope190
+                                                                                                                                                                                                                                                                                                                                                                                              CONST190 = 190
+                                                                                                                                                                                                                                                                                                                                                                                              CONST110
+                                                                                                                                                                                                                                                                                                                                                                                              module Scope191
+                                                                                                                                                                                                                                                                                                                                                                                                CONST191 = 191
+                                                                                                                                                                                                                                                                                                                                                                                                CONST112
+                                                                                                                                                                                                                                                                                                                                                                                                module Scope192
+                                                                                                                                                                                                                                                                                                                                                                                                  CONST192 = 192
+                                                                                                                                                                                                                                                                                                                                                                                                  CONST16
+                                                                                                                                                                                                                                                                                                                                                                                                  module Scope193
+                                                                                                                                                                                                                                                                                                                                                                                                    CONST193 = 193
+                                                                                                                                                                                                                                                                                                                                                                                                    CONST131
+                                                                                                                                                                                                                                                                                                                                                                                                    module Scope194
+                                                                                                                                                                                                                                                                                                                                                                                                      CONST194 = 194
+                                                                                                                                                                                                                                                                                                                                                                                                      CONST51
+                                                                                                                                                                                                                                                                                                                                                                                                      module Scope195
+                                                                                                                                                                                                                                                                                                                                                                                                        CONST195 = 195
+                                                                                                                                                                                                                                                                                                                                                                                                        CONST130
+                                                                                                                                                                                                                                                                                                                                                                                                        module Scope196
+                                                                                                                                                                                                                                                                                                                                                                                                          CONST196 = 196
+                                                                                                                                                                                                                                                                                                                                                                                                          CONST151
+                                                                                                                                                                                                                                                                                                                                                                                                          module Scope197
+                                                                                                                                                                                                                                                                                                                                                                                                            CONST197 = 197
+                                                                                                                                                                                                                                                                                                                                                                                                            CONST74
+                                                                                                                                                                                                                                                                                                                                                                                                            module Scope198
+                                                                                                                                                                                                                                                                                                                                                                                                              CONST198 = 198
+                                                                                                                                                                                                                                                                                                                                                                                                              CONST181
+                                                                                                                                                                                                                                                                                                                                                                                                              module Scope199
+                                                                                                                                                                                                                                                                                                                                                                                                                CONST199 = 199
+                                                                                                                                                                                                                                                                                                                                                                                                                CONST20
+                                                                                                                                                                                                                                                                                                                                                                                                              end
+                                                                                                                                                                                                                                                                                                                                                                                                            end
+                                                                                                                                                                                                                                                                                                                                                                                                          end
+                                                                                                                                                                                                                                                                                                                                                                                                        end
+                                                                                                                                                                                                                                                                                                                                                                                                      end
+                                                                                                                                                                                                                                                                                                                                                                                                    end
+                                                                                                                                                                                                                                                                                                                                                                                                  end
+                                                                                                                                                                                                                                                                                                                                                                                                end
+                                                                                                                                                                                                                                                                                                                                                                                              end
+                                                                                                                                                                                                                                                                                                                                                                                            end
+                                                                                                                                                                                                                                                                                                                                                                                          end
+                                                                                                                                                                                                                                                                                                                                                                                        end
+                                                                                                                                                                                                                                                                                                                                                                                      end
+                                                                                                                                                                                                                                                                                                                                                                                    end
+                                                                                                                                                                                                                                                                                                                                                                                  end
+                                                                                                                                                                                                                                                                                                                                                                                end
+                                                                                                                                                                                                                                                                                                                                                                              end
+                                                                                                                                                                                                                                                                                                                                                                            end
+                                                                                                                                                                                                                                                                                                                                                                          end
+                                                                                                                                                                                                                                                                                                                                                                        end
+                                                                                                                                                                                                                                                                                                                                                                      end
+                                                                                                                                                                                                                                                                                                                                                                    end
+                                                                                                                                                                                                                                                                                                                                                                  end
+                                                                                                                                                                                                                                                                                                                                                                end
+                                                                                                                                                                                                                                                                                                                                                              end
+                                                                                                                                                                                                                                                                                                                                                            end
+                                                                                                                                                                                                                                                                                                                                                          end
+                                                                                                                                                                                                                                                                                                                                                        end
+                                                                                                                                                                                                                                                                                                                                                      end
+                                                                                                                                                                                                                                                                                                                                                    end
+                                                                                                                                                                                                                                                                                                                                                  end
+                                                                                                                                                                                                                                                                                                                                                end
+                                                                                                                                                                                                                                                                                                                                              end
+                                                                                                                                                                                                                                                                                                                                            end
+                                                                                                                                                                                                                                                                                                                                          end
+                                                                                                                                                                                                                                                                                                                                        end
+                                                                                                                                                                                                                                                                                                                                      end
+                                                                                                                                                                                                                                                                                                                                    end
+                                                                                                                                                                                                                                                                                                                                  end
+                                                                                                                                                                                                                                                                                                                                end
+                                                                                                                                                                                                                                                                                                                              end
+                                                                                                                                                                                                                                                                                                                            end
+                                                                                                                                                                                                                                                                                                                          end
+                                                                                                                                                                                                                                                                                                                        end
+                                                                                                                                                                                                                                                                                                                      end
+                                                                                                                                                                                                                                                                                                                    end
+                                                                                                                                                                                                                                                                                                                  end
+                                                                                                                                                                                                                                                                                                                end
+                                                                                                                                                                                                                                                                                                              end
+                                                                                                                                                                                                                                                                                                            end
+                                                                                                                                                                                                                                                                                                          end
+                                                                                                                                                                                                                                                                                                        end
+                                                                                                                                                                                                                                                                                                      end
+                                                                                                                                                                                                                                                                                                    end
+                                                                                                                                                                                                                                                                                                  end
+                                                                                                                                                                                                                                                                                                end
+                                                                                                                                                                                                                                                                                              end
+                                                                                                                                                                                                                                                                                            end
+                                                                                                                                                                                                                                                                                          end
+                                                                                                                                                                                                                                                                                        end
+                                                                                                                                                                                                                                                                                      end
+                                                                                                                                                                                                                                                                                    end
+                                                                                                                                                                                                                                                                                  end
+                                                                                                                                                                                                                                                                                end
+                                                                                                                                                                                                                                                                              end
+                                                                                                                                                                                                                                                                            end
+                                                                                                                                                                                                                                                                          end
+                                                                                                                                                                                                                                                                        end
+                                                                                                                                                                                                                                                                      end
+                                                                                                                                                                                                                                                                    end
+                                                                                                                                                                                                                                                                  end
+                                                                                                                                                                                                                                                                end
+                                                                                                                                                                                                                                                              end
+                                                                                                                                                                                                                                                            end
+                                                                                                                                                                                                                                                          end
+                                                                                                                                                                                                                                                        end
+                                                                                                                                                                                                                                                      end
+                                                                                                                                                                                                                                                    end
+                                                                                                                                                                                                                                                  end
+                                                                                                                                                                                                                                                end
+                                                                                                                                                                                                                                              end
+                                                                                                                                                                                                                                            end
+                                                                                                                                                                                                                                          end
+                                                                                                                                                                                                                                        end
+                                                                                                                                                                                                                                      end
+                                                                                                                                                                                                                                    end
+                                                                                                                                                                                                                                  end
+                                                                                                                                                                                                                                end
+                                                                                                                                                                                                                              end
+                                                                                                                                                                                                                            end
+                                                                                                                                                                                                                          end
+                                                                                                                                                                                                                        end
+                                                                                                                                                                                                                      end
+                                                                                                                                                                                                                    end
+                                                                                                                                                                                                                  end
+                                                                                                                                                                                                                end
+                                                                                                                                                                                                              end
+                                                                                                                                                                                                            end
+                                                                                                                                                                                                          end
+                                                                                                                                                                                                        end
+                                                                                                                                                                                                      end
+                                                                                                                                                                                                    end
+                                                                                                                                                                                                  end
+                                                                                                                                                                                                end
+                                                                                                                                                                                              end
+                                                                                                                                                                                            end
+                                                                                                                                                                                          end
+                                                                                                                                                                                        end
+                                                                                                                                                                                      end
+                                                                                                                                                                                    end
+                                                                                                                                                                                  end
+                                                                                                                                                                                end
+                                                                                                                                                                              end
+                                                                                                                                                                            end
+                                                                                                                                                                          end
+                                                                                                                                                                        end
+                                                                                                                                                                      end
+                                                                                                                                                                    end
+                                                                                                                                                                  end
+                                                                                                                                                                end
+                                                                                                                                                              end
+                                                                                                                                                            end
+                                                                                                                                                          end
+                                                                                                                                                        end
+                                                                                                                                                      end
+                                                                                                                                                    end
+                                                                                                                                                  end
+                                                                                                                                                end
+                                                                                                                                              end
+                                                                                                                                            end
+                                                                                                                                          end
+                                                                                                                                        end
+                                                                                                                                      end
+                                                                                                                                    end
+                                                                                                                                  end
+                                                                                                                                end
+                                                                                                                              end
+                                                                                                                            end
+                                                                                                                          end
+                                                                                                                        end
+                                                                                                                      end
+                                                                                                                    end
+                                                                                                                  end
+                                                                                                                end
+                                                                                                              end
+                                                                                                            end
+                                                                                                          end
+                                                                                                        end
+                                                                                                      end
+                                                                                                    end
+                                                                                                  end
+                                                                                                end
+                                                                                              end
+                                                                                            end
+                                                                                          end
+                                                                                        end
+                                                                                      end
+                                                                                    end
+                                                                                  end
+                                                                                end
+                                                                              end
+                                                                            end
+                                                                          end
+                                                                        end
+                                                                      end
+                                                                    end
+                                                                  end
+                                                                end
+                                                              end
+                                                            end
+                                                          end
+                                                        end
+                                                      end
+                                                    end
+                                                  end
+                                                end
+                                              end
+                                            end
+                                          end
+                                        end
+                                      end
+                                    end
+                                  end
+                                end
+                              end
+                            end
+                          end
+                        end
+                      end
+                    end
+                  end
+                end
+              end
+            end
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/benchmark/bm_constant_lookup_small.rb b/benchmark/bm_constant_lookup_small.rb
new file mode 100644
index 00000000..13e7d2c3
--- /dev/null
+++ b/benchmark/bm_constant_lookup_small.rb
@@ -0,0 +1,59 @@
+module Scope0
+  CONST0 = 0
+  module Scope1
+    CONST1 = 1
+    CONST0
+    module Scope2
+      CONST2 = 2
+      CONST1
+      module Scope3
+        CONST3 = 3
+        CONST0
+        module Scope4
+          CONST4 = 4
+          CONST0
+          module Scope5
+            CONST5 = 5
+            CONST4
+            module Scope6
+              CONST6 = 6
+              CONST4
+              module Scope7
+                CONST7 = 7
+                CONST5
+                module Scope8
+                  CONST8 = 8
+                  CONST7
+                  module Scope9
+                    CONST9 = 9
+                    CONST8
+                    module Scope10
+                      CONST10 = 10
+                      CONST4
+                      module Scope11
+                        CONST11 = 11
+                        CONST7
+                        module Scope12
+                          CONST12 = 12
+                          CONST1
+                          module Scope13
+                            CONST13 = 13
+                            CONST11
+                            module Scope14
+                              CONST14 = 14
+                              CONST13
+                            end
+                          end
+                        end
+                      end
+                    end
+                  end
+                end
+              end
+            end
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/benchmark/bm_dispatch_bind_table.rb b/benchmark/bm_dispatch_bind_table.rb
new file mode 100644
index 00000000..9b47d922
--- /dev/null
+++ b/benchmark/bm_dispatch_bind_table.rb
@@ -0,0 +1,57 @@
+class BindTableDispatch
+  attr_reader :event_log
+
+  def initialize
+    @event_log = []
+  end
+
+  def self.method_added_cheat(method_name)
+    if method_name.to_s =~ /^handle_(.+)$/
+      handler_methods[$1.to_sym] = instance_method(method_name)
+    end
+    # Cheating here, because Opal does not support method_added hook yet
+    # Uncomment the super below when it does:
+    # super
+  end
+
+  def self.handler_methods
+    @handler_methods ||= {}
+  end
+
+  def call(event)
+    if (handler_method = self.class.handler_methods[event.name])
+      handler_method.bind(self).call(event)
+    end
+  end
+
+  def handle_foo(event)
+    event_log << event
+  end
+
+  def handle_bar(event)
+    event_log << event
+  end
+
+  def handle_baz(event)
+    event_log << event
+  end
+end
+
+klass = BindTableDispatch
+event = Struct.new(:name, :source, :args)
+
+# Cheating here, because Opal does not support method_added hook yet
+klass.method_added_cheat(:handle_foo)
+klass.method_added_cheat(:handle_bar)
+klass.method_added_cheat(:handle_baz)
+
+100_000.times do
+  obj = klass.new
+  obj.call(e1 = event[:foo])
+  obj.call(e2 = event[:bar])
+  obj.call(e3 = event[:baz])
+  obj.call(event[:buz])
+  unless obj.event_log == [e1, e2, e3]
+    raise "#{klass}: #{obj.event_log.inspect}"
+  end
+end
diff --git a/benchmark/bm_dispatch_code_gen.rb b/benchmark/bm_dispatch_code_gen.rb
new file mode 100644
index 00000000..ba1fc98f
--- /dev/null
+++ b/benchmark/bm_dispatch_code_gen.rb
@@ -0,0 +1,65 @@
+class CodeGenDispatch
+  attr_reader :event_log
+
+  def initialize
+    @event_log = []
+  end
+
+  def self.method_added_cheat(method_name)
+    if method_name.to_s =~ /^handle_(.+)$/
+      handler_methods << $1
+      regenerate_dispatch_method
+    end
+    # Cheating here, because Opal does not support method_added hook yet
+    # Uncomment the super below when it does:
+    # super
+  end
+
+  def self.handler_methods
+    @handler_methods ||= []
+  end
+
+  def self.regenerate_dispatch_method
+    dispatch_table = handler_methods.map { |event_name|
+      "when :#{event_name} then handle_#{event_name}(event)"
+    }.join("\n")
+    class_eval %{
+      def call(event)
+        case event.name
+        #{dispatch_table}
+        end
+      end
+    }
+  end
+
+  def handle_foo(event)
+    event_log << event
+  end
+
+  def handle_bar(event)
+    event_log << event
+  end
+
+  def handle_baz(event)
+    event_log << event
+  end
+end
+
+klass = CodeGenDispatch
+event = Struct.new(:name, :source, :args)
+
+# Cheating here, because Opal does not support method_added hook yet
+klass.method_added_cheat(:handle_foo)
+klass.method_added_cheat(:handle_bar)
+klass.method_added_cheat(:handle_baz)
+
+100_000.times do
+  obj = klass.new
+  obj.call(e1 = event[:foo])
+  obj.call(e2 = event[:bar])
+  obj.call(e3 = event[:baz])
+  obj.call(event[:buz])
+  unless obj.event_log == [e1, e2, e3]
+    raise "#{klass}: #{obj.event_log.inspect}"
+  end
+end
diff --git a/benchmark/bm_dispatch_code_gen_if.rb b/benchmark/bm_dispatch_code_gen_if.rb
new file mode 100644
index 00000000..b38e6ad9
--- /dev/null
+++ b/benchmark/bm_dispatch_code_gen_if.rb
@@ -0,0 +1,64 @@
+class IfCodeGenDispatch
+  attr_reader :event_log
+
+  def initialize
+    @event_log = []
+  end
+
+  def self.method_added_cheat(method_name)
+    if method_name.to_s =~ /^handle_(.+)$/
+      handler_methods << $1
+      regenerate_dispatch_method
+    end
+    # Cheating here, because Opal does not support method_added hook yet
+    # Uncomment the super below when it does:
+    # super
+  end
+
+  def self.handler_methods
+    @handler_methods ||= []
+  end
+
+  def self.regenerate_dispatch_method
+    dispatch_table = handler_methods.map { |event_name|
+      "event.name.equal?(:#{event_name}) then handle_#{event_name}(event)"
+    }.join("\nelsif ")
+    class_eval %{
+      def call(event)
+        if #{dispatch_table}
+        end
+      end
+    }
+  end
+
+  def handle_foo(event)
+    event_log << event
+  end
+
+  def handle_bar(event)
+    event_log << event
+  end
+
+  def handle_baz(event)
+    event_log << event
+  end
+end
+
+klass = IfCodeGenDispatch
+event = Struct.new(:name, :source, :args)
+
+# Cheating here, because Opal does not support method_added hook yet
+klass.method_added_cheat(:handle_foo)
+klass.method_added_cheat(:handle_bar)
+klass.method_added_cheat(:handle_baz)
+
+100_000.times do
+  obj = klass.new
+  obj.call(e1 = event[:foo])
+  obj.call(e2 = event[:bar])
+  obj.call(e3 = event[:baz])
+  obj.call(event[:buz])
+  unless obj.event_log == [e1, e2, e3]
+    raise "#{klass}: #{obj.event_log.inspect}"
+  end
+end
diff --git a/benchmark/bm_dispatch_hardcoded.rb b/benchmark/bm_dispatch_hardcoded.rb
new file mode 100644
index 00000000..433e77a1
--- /dev/null
+++ b/benchmark/bm_dispatch_hardcoded.rb
@@ -0,0 +1,44 @@
+class HardcodedDispatch
+  attr_reader :event_log
+
+  def initialize
+    @event_log = []
+  end
+
+  def call(event)
+    case event.name
+    when :foo
+      handle_foo(event)
+    when :bar
+      handle_bar(event)
+    when :baz
+      handle_baz(event)
+    end
+  end
+
+  def handle_foo(event)
+    event_log << event
+  end
+
+  def handle_bar(event)
+    event_log << event
+  end
+
+  def handle_baz(event)
+    event_log << event
+  end
+end
+
+klass = HardcodedDispatch
+event = Struct.new(:name, :source, :args)
+
+100_000.times do
+  obj = klass.new
+  obj.call(e1 = event[:foo])
+  obj.call(e2 = event[:bar])
+  obj.call(e3 = event[:baz])
+  obj.call(event[:buz])
+  unless obj.event_log == [e1, e2, e3]
+    raise "#{klass}: #{obj.event_log.inspect}"
+  end
+end
diff --git a/benchmark/bm_dispatch_send.rb b/benchmark/bm_dispatch_send.rb
new file mode 100644
index 00000000..f1b04af1
--- /dev/null
+++ b/benchmark/bm_dispatch_send.rb
@@ -0,0 +1,38 @@
+class SendDispatch
+  attr_reader :event_log
+
+  def initialize
+    @event_log = []
+  end
+
+  def call(event)
+    handler_name = "handle_#{event.name}"
+    __send__(handler_name, event) if respond_to?(handler_name)
+  end
+
+  def handle_foo(event)
+    event_log << event
+  end
+
+  def handle_bar(event)
+    event_log << event
+  end
+
+  def handle_baz(event)
+    event_log << event
+  end
+end
+
+klass = SendDispatch
+event = Struct.new(:name, :source, :args)
+
+100_000.times do
+  obj = klass.new
+  obj.call(e1 = event[:foo])
+  obj.call(e2 = event[:bar])
+  obj.call(e3 = event[:baz])
+  obj.call(event[:buz])
+  unless obj.event_log == [e1, e2, e3]
+    raise "#{klass}: #{obj.event_log.inspect}"
+  end
+end
diff --git a/benchmark/bm_dispatch_send_table.rb b/benchmark/bm_dispatch_send_table.rb
new file mode 100644
index 00000000..3be3777b
--- /dev/null
+++ b/benchmark/bm_dispatch_send_table.rb
@@ -0,0 +1,57 @@
+class SendTableDispatch
+  attr_reader :event_log
+
+  def initialize
+    @event_log = []
+  end
+
+  def self.method_added_cheat(method_name)
+    if method_name.to_s =~ /^handle_(.+)$/
+      handler_methods[$1.to_sym] = method_name.to_sym
+    end
+    # Cheating here, because Opal does not support method_added hook yet
+    # Uncomment the super below when it does:
+    # super
+  end
+
+  def self.handler_methods
+    @handler_methods ||= {}
+  end
+
+  def call(event)
+    if (handler_method = self.class.handler_methods[event.name])
+      __send__(handler_method, event)
+    end
+  end
+
+  def handle_foo(event)
+    event_log << event
+  end
+
+  def handle_bar(event)
+    event_log << event
+  end
+
+  def handle_baz(event)
+    event_log << event
+  end
+end
+
+klass = SendTableDispatch
+event = Struct.new(:name, :source, :args)
+
+# Cheating here, because Opal does not support method_added hook yet
+klass.method_added_cheat(:handle_foo)
+klass.method_added_cheat(:handle_bar)
+klass.method_added_cheat(:handle_baz)
+
+100_000.times do
+  obj = klass.new
+  obj.call(e1 = event[:foo])
+  obj.call(e2 = event[:bar])
+  obj.call(e3 = event[:baz])
+  obj.call(event[:buz])
+  unless obj.event_log == [e1, e2, e3]
+    raise "#{klass}: #{obj.event_log.inspect}"
+  end
+end
diff --git a/benchmark/bm_hash_assoc_object.rb b/benchmark/bm_hash_assoc_object.rb
new file mode 100644
index 00000000..f0540f0f
--- /dev/null
+++ b/benchmark/bm_hash_assoc_object.rb
@@ -0,0 +1,11 @@
+h = {}
+a = []
+
+10_000.times do |i|
+  a[i] = Object.new
+  h[a[i]] = nil
+end
+
+10_000.times do |i|
+  k, v = h.assoc(a[i])
+end
diff --git a/benchmark/bm_hash_assoc_string.rb b/benchmark/bm_hash_assoc_string.rb
new file mode 100644
index 00000000..ffbbab9e
--- /dev/null
+++ b/benchmark/bm_hash_assoc_string.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[i.to_s] = nil
+end
+
+10_000.times do |i|
+  k, v = h.assoc(i.to_s)
+end
diff --git a/benchmark/bm_hash_clone_object.rb b/benchmark/bm_hash_clone_object.rb
new file mode 100644
index 00000000..875e5f28
--- /dev/null
+++ b/benchmark/bm_hash_clone_object.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[Object.new] = nil
+end
+
+100.times do |i|
+  h.clone
+end
diff --git a/benchmark/bm_hash_clone_string.rb b/benchmark/bm_hash_clone_string.rb
new file mode 100644
index 00000000..53c26410
--- /dev/null
+++ b/benchmark/bm_hash_clone_string.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[i.to_s] = nil
+end
+
+100.times do |i|
+  h.clone
+end
diff --git a/benchmark/bm_hash_delete_object.rb b/benchmark/bm_hash_delete_object.rb
new file mode 100644
index 00000000..82fd5735
--- /dev/null
+++ b/benchmark/bm_hash_delete_object.rb
@@ -0,0 +1,11 @@
+h = {}
+a = []
+
+10_000.times do |i|
+  a[i] = Object.new
+  h[a[i]] = nil
+end
+
+10_000.times do |i|
+  h.delete(a[i])
+end
diff --git a/benchmark/bm_hash_delete_string.rb b/benchmark/bm_hash_delete_string.rb
new file mode 100644
index 00000000..a404e4ee
--- /dev/null
+++ b/benchmark/bm_hash_delete_string.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[i.to_s] = nil
+end
+
+10_000.times do |i|
+  h.delete(i.to_s)
+end
diff --git a/benchmark/bm_hash_each_key_object.rb b/benchmark/bm_hash_each_key_object.rb
new file mode 100644
index 00000000..57a6bf69
--- /dev/null
+++ b/benchmark/bm_hash_each_key_object.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[Object.new] = nil
+end
+
+1_000.times do |i|
+  h.each_key{|k| nil}
+end
diff --git a/benchmark/bm_hash_each_key_string.rb b/benchmark/bm_hash_each_key_string.rb
new file mode 100644
index 00000000..e5f2213a
--- /dev/null
+++ b/benchmark/bm_hash_each_key_string.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[i.to_s] = nil
+end
+
+1_000.times do |i|
+  h.each_key{|k| nil}
+end
diff --git a/benchmark/bm_hash_each_object.rb b/benchmark/bm_hash_each_object.rb
new file mode 100644
index 00000000..0c449890
--- /dev/null
+++ b/benchmark/bm_hash_each_object.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[Object.new] = nil
+end
+
+1_000.times do |i|
+  h.each{|k, v| nil}
+end
diff --git a/benchmark/bm_hash_each_string.rb b/benchmark/bm_hash_each_string.rb
new file mode 100644
index 00000000..dfaf35bd
--- /dev/null
+++ b/benchmark/bm_hash_each_string.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[i.to_s] = nil
+end
+
+1_000.times do |i|
+  h.each{|k, v| nil}
+end
diff --git a/benchmark/bm_hash_each_value_object.rb b/benchmark/bm_hash_each_value_object.rb
new file mode 100644
index 00000000..eb5d27f7
--- /dev/null
+++ b/benchmark/bm_hash_each_value_object.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[Object.new] = nil
+end
+
+1_000.times do |i|
+  h.each_value{|v| nil}
+end
diff --git a/benchmark/bm_hash_each_value_string.rb b/benchmark/bm_hash_each_value_string.rb
new file mode 100644
index 00000000..a05112ca
--- /dev/null
+++ b/benchmark/bm_hash_each_value_string.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[i.to_s] = nil
+end
+
+1_000.times do |i|
+  h.each_value{|v| nil}
+end
diff --git a/benchmark/bm_hash_element_reference_object.rb b/benchmark/bm_hash_element_reference_object.rb
new file mode 100644
index 00000000..2c40f315
--- /dev/null
+++ b/benchmark/bm_hash_element_reference_object.rb
@@ -0,0 +1,11 @@
+h = {}
+a = []
+
+10_000.times do |i|
+  a[i] = Object.new
+  h[a[i]] = nil
+end
+
+10_000.times do |i|
+  h[a[i]]
+end
diff --git a/benchmark/bm_hash_element_reference_string.rb b/benchmark/bm_hash_element_reference_string.rb
new file mode 100644
index 00000000..6fc73ea2
--- /dev/null
+++ b/benchmark/bm_hash_element_reference_string.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[i.to_s] = nil
+end
+
+10_000.times do |i|
+  h[i.to_s]
+end
diff --git a/benchmark/bm_hash_element_set_object.rb b/benchmark/bm_hash_element_set_object.rb
new file mode 100644
index 00000000..c1d778c0
--- /dev/null
+++ b/benchmark/bm_hash_element_set_object.rb
@@ -0,0 +1,5 @@
+h = {}
+
+100_000.times do |i|
+  h[Object.new] = nil
+end
diff --git a/benchmark/bm_hash_element_set_string.rb b/benchmark/bm_hash_element_set_string.rb
new file mode 100644
index 00000000..0eb03ddc
--- /dev/null
+++ b/benchmark/bm_hash_element_set_string.rb
@@ -0,0 +1,5 @@
+h = {}
+
+100_000.times do |i|
+  h[i.to_s] = nil
+end
diff --git a/benchmark/bm_hash_equal_value_object.rb b/benchmark/bm_hash_equal_value_object.rb
new file mode 100644
index 00000000..3bbae2a5
--- /dev/null
+++ b/benchmark/bm_hash_equal_value_object.rb
@@ -0,0 +1,14 @@
+h1 = {}
+h2 = {}
+
+a = []
+
+10_000.times do |i|
+  a[i] = Object.new
+  h1[a[i]] = nil
+  h2[a[i]] = nil
+end
+
+1_000.times do
+  h1 == h2
+end
diff --git a/benchmark/bm_hash_equal_value_string.rb b/benchmark/bm_hash_equal_value_string.rb
new file mode 100644
index 00000000..c846aee6
--- /dev/null
+++ b/benchmark/bm_hash_equal_value_string.rb
@@ -0,0 +1,11 @@
+h1 = {}
+h2 = {}
+
+10_000.times do |i|
+  h1[i.to_s] = nil
+  h2[i.to_s] = nil
+end
+
+1_000.times do
+  h1 == h2
+end
diff --git a/benchmark/bm_hash_fetch_object.rb b/benchmark/bm_hash_fetch_object.rb
new file mode 100644
index 00000000..5283b13a
--- /dev/null
+++ b/benchmark/bm_hash_fetch_object.rb
@@ -0,0 +1,11 @@
+h = {}
+a = []
+
+10_000.times do |i|
+  a[i] = Object.new
+  h[a[i]] = nil
+end
+
+1_000.times do |i|
+  h.fetch(a[i])
+end
diff --git a/benchmark/bm_hash_fetch_string.rb b/benchmark/bm_hash_fetch_string.rb
new file mode 100644
index 00000000..42b2a69c
--- /dev/null
+++ b/benchmark/bm_hash_fetch_string.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[i.to_s] = nil
+end
+
+1_000.times do |i|
+  h.fetch(i.to_s)
+end
diff --git a/benchmark/bm_hash_flatten_object.rb b/benchmark/bm_hash_flatten_object.rb
new file mode 100644
index 00000000..e4b72cf3
--- /dev/null
+++ b/benchmark/bm_hash_flatten_object.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[Object.new] = nil
+end
+
+1_000.times do
+  h.flatten
+end
diff --git a/benchmark/bm_hash_flatten_string.rb b/benchmark/bm_hash_flatten_string.rb
new file mode 100644
index 00000000..403497f6
--- /dev/null
+++ b/benchmark/bm_hash_flatten_string.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[i.to_s] = nil
+end
+
+1_000.times do
+  h.flatten
+end
diff --git a/benchmark/bm_hash_has_key_object.rb b/benchmark/bm_hash_has_key_object.rb
new file mode 100644
index 00000000..7b46287d
--- /dev/null
+++ b/benchmark/bm_hash_has_key_object.rb
@@ -0,0 +1,11 @@
+h = {}
+a = []
+
+10_000.times do |i|
+  a[i] = Object.new
+  h[a[i]] = nil
+end
+
+10_000.times do |i|
+  h.has_key?(a[i])
+end
diff --git a/benchmark/bm_hash_has_key_string.rb b/benchmark/bm_hash_has_key_string.rb
new file mode 100644
index 00000000..d0f08b94
--- /dev/null
+++ b/benchmark/bm_hash_has_key_string.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[i.to_s] = nil
+end
+
+10_000.times do |i|
+  h.has_key?(i.to_s)
+end
diff --git a/benchmark/bm_hash_has_value_object.rb b/benchmark/bm_hash_has_value_object.rb
new file mode 100644
index 00000000..8f5b27e7
--- /dev/null
+++ b/benchmark/bm_hash_has_value_object.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[Object.new] = i * 2
+end
+
+1_000.times do |i|
+  h.has_value?(i * 2)
+end
diff --git a/benchmark/bm_hash_has_value_string.rb b/benchmark/bm_hash_has_value_string.rb
new file mode 100644
index 00000000..b7fa26ec
--- /dev/null
+++ b/benchmark/bm_hash_has_value_string.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[i.to_s] = i * 2
+end
+
+1_000.times do |i|
+  h.has_value?(i * 2)
+end
diff --git a/benchmark/bm_hash_hash_object.rb b/benchmark/bm_hash_hash_object.rb
new file mode 100644
index 00000000..c56df74f
--- /dev/null
+++ b/benchmark/bm_hash_hash_object.rb
@@ -0,0 +1,9 @@
+h = {}
+
+1_000.times do |i|
+  h[Object.new] = nil
+end
+
+100.times do |i|
+  h.hash
+end
diff --git a/benchmark/bm_hash_hash_string.rb b/benchmark/bm_hash_hash_string.rb
new file mode 100644
index 00000000..27fb2f52
--- /dev/null
+++ b/benchmark/bm_hash_hash_string.rb
@@ -0,0 +1,9 @@
+h = {}
+
+1_000.times do |i|
+  h[i.to_s] = nil
+end
+
+100.times do |i|
+  h.hash
+end
diff --git a/benchmark/bm_hash_inspect_object.rb b/benchmark/bm_hash_inspect_object.rb
new file mode 100644
index 00000000..be50b056
--- /dev/null
+++ b/benchmark/bm_hash_inspect_object.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[Object.new] = nil
+end
+
+100.times do
+  h.inspect
+end
diff --git a/benchmark/bm_hash_inspect_string.rb b/benchmark/bm_hash_inspect_string.rb
new file mode 100644
index 00000000..eb38a692
--- /dev/null
+++ b/benchmark/bm_hash_inspect_string.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[i.to_s] = nil
+end
+
+100.times do
+  h.inspect
+end
diff --git a/benchmark/bm_hash_invert_object.rb b/benchmark/bm_hash_invert_object.rb
new file mode 100644
index 00000000..6467771c
--- /dev/null
+++ b/benchmark/bm_hash_invert_object.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[Object.new] = nil
+end
+
+100.times do
+  h.invert
+end
diff --git a/benchmark/bm_hash_invert_string.rb b/benchmark/bm_hash_invert_string.rb
new file mode 100644
index 00000000..67ef045a
--- /dev/null
+++ b/benchmark/bm_hash_invert_string.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[i.to_s] = nil
+end
+
+100.times do
+  h.invert
+end
diff --git a/benchmark/bm_hash_keep_if_object.rb b/benchmark/bm_hash_keep_if_object.rb
new file mode 100644
index 00000000..318bf19a
--- /dev/null
+++ b/benchmark/bm_hash_keep_if_object.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[Object.new] = i
+end
+
+1_000.times do
+  h.keep_if{|k, v| v % 2 == 0}
+end
diff --git a/benchmark/bm_hash_keep_if_string.rb b/benchmark/bm_hash_keep_if_string.rb
new file mode 100644
index 00000000..566bb179
--- /dev/null
+++ b/benchmark/bm_hash_keep_if_string.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[i.to_s] = i
+end
+
+1_000.times do
+  h.keep_if{|k, v| v % 2 == 0}
+end
diff --git a/benchmark/bm_hash_key_object.rb b/benchmark/bm_hash_key_object.rb
new file mode 100644
index 00000000..028a8837
--- /dev/null
+++ b/benchmark/bm_hash_key_object.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[Object.new] = i
+end
+
+1_000.times do |i|
+  h.key(i)
+end
diff --git a/benchmark/bm_hash_key_string.rb b/benchmark/bm_hash_key_string.rb
new file mode 100644
index 00000000..030969dc
--- /dev/null
+++ b/benchmark/bm_hash_key_string.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[i.to_s] = i
+end
+
+1_000.times do |i|
+  h.key(i)
+end
diff --git a/benchmark/bm_hash_keys_object.rb b/benchmark/bm_hash_keys_object.rb
new file mode 100644
index 00000000..a2c6158d
--- /dev/null
+++ b/benchmark/bm_hash_keys_object.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[Object.new] = nil
+end
+
+5_000.times do
+  h.keys
+end
diff --git a/benchmark/bm_hash_keys_string.rb b/benchmark/bm_hash_keys_string.rb
new file mode 100644
index 00000000..f21b2774
--- /dev/null
+++ b/benchmark/bm_hash_keys_string.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[i.to_s] = nil
+end
+
+5_000.times do
+  h.keys
+end
diff --git a/benchmark/bm_hash_literal_mixed_large.rb b/benchmark/bm_hash_literal_mixed_large.rb
new file mode 100644
index 00000000..2cc991ca
--- /dev/null
+++ b/benchmark/bm_hash_literal_mixed_large.rb
@@ -0,0 +1,3 @@
+1000.times do
+  h = {Object.new => '0', '1' => '1', Object.new => '2', '3' => '3', Object.new => '4', '5' => '5', Object.new => '6', '7' => '7', Object.new => '8', '9' => '9', Object.new => '10', '11' => '11', Object.new => '12', '13' => '13', Object.new => '14', '15' => '15', Object.new => '16', '17' => '17', Object.new => '18', '19' => '19', Object.new => '20', '21' => '21', Object.new => '22', '23' => '23', Object.new => '24', '25' => '25', Object.new => '26', '27' => '27', Object.new => '28', '29' => '29', Object.new => '30', '31' => '31', Object.new => '32', '33' => '33', Object.new => '34', '35' => '35', Object.new => '36', '37' => '37', Object.new => '38', '39' => '39', Object.new => '40', '41' => '41', Object.new => '42', '43' => '43', Object.new => '44', '45' => '45', Object.new => '46', '47' => '47', Object.new => '48', '49' => '49', Object.new => '50', '51' => '51', Object.new => '52', '53' => '53', Object.new => '54', '55' => '55', Object.new => '56', '57' => '57', Object.new => '58', '59' => '59', Object.new => '60', '61' => '61', Object.new => '62', '63' => '63', Object.new => '64', '65' => '65', Object.new => '66', '67' => '67', Object.new => '68', '69' => '69', Object.new => '70', '71' => '71', Object.new => '72', '73' => '73', Object.new => '74', '75' => '75', Object.new => '76', '77' => '77', Object.new => '78', '79' => '79', Object.new => '80', '81' => '81', Object.new => '82', '83' => '83', Object.new => '84', '85' => '85', Object.new => '86', '87' => '87', Object.new => '88', '89' => '89', Object.new => '90', '91' => '91', Object.new => '92', '93' => '93', Object.new => '94', '95' => '95', Object.new => '96', '97' => '97', Object.new => '98', '99' => '99', Object.new => '100', '101' => '101', Object.new => '102', '103' => '103', Object.new => '104', '105' => '105', Object.new => '106', '107' => '107', Object.new => '108', '109' => '109', Object.new => '110', '111' => '111', Object.new => '112', '113' => '113', Object.new => '114', '115' => '115', Object.new => '116', '117' => '117', Object.new => '118', '119' => '119', Object.new => '120', '121' => '121', Object.new => '122', '123' => '123', Object.new => '124', '125' => '125', Object.new => '126', '127' => '127', Object.new => '128', '129' => '129', Object.new => '130', '131' => '131', Object.new => '132', '133' => '133', Object.new => '134', '135' => '135', Object.new => '136', '137' => '137', Object.new => '138', '139' => '139', Object.new => '140', '141' => '141', Object.new => '142', '143' => '143', Object.new => '144', '145' => '145', Object.new => '146', '147' => '147', Object.new => '148', '149' => '149', Object.new => '150', '151' => '151', Object.new => '152', '153' => '153', Object.new => '154', '155' => '155', Object.new => '156', '157' => '157', Object.new => '158', '159' => '159', Object.new => '160', '161' => '161', Object.new => '162', '163' => '163', Object.new => '164', '165' => '165', Object.new => '166', '167' => '167', Object.new => '168', '169' => '169', Object.new => '170', '171' => '171', Object.new => '172', '173' => '173', Object.new => '174', '175' => '175', Object.new => '176', '177' => '177', Object.new => '178', '179' => '179', Object.new => '180', '181' => '181', Object.new => '182', '183' => '183', Object.new => '184', '185' => '185', Object.new => '186', '187' => '187', Object.new => '188', '189' => '189', Object.new => '190', '191' => '191', Object.new => '192', '193' => '193', Object.new => '194', '195' => '195', Object.new => '196', '197' => '197', Object.new => '198', '199' => '199', Object.new => '200', '201' => '201', Object.new => '202', '203' => '203', Object.new => '204', '205' => '205', Object.new => '206', '207' => '207', Object.new => '208', '209' => '209', Object.new => '210', '211' => '211', Object.new => '212', '213' => '213', Object.new => '214', '215' => '215', Object.new => '216', '217' => '217', Object.new => '218', '219' => '219', Object.new => '220', '221' => '221', Object.new => '222', '223' => '223', Object.new => '224', '225' => '225', Object.new => '226', '227' => '227', Object.new => '228', '229' => '229', Object.new => '230', '231' => '231', Object.new => '232', '233' => '233', Object.new => '234', '235' => '235', Object.new => '236', '237' => '237', Object.new => '238', '239' => '239', Object.new => '240', '241' => '241', Object.new => '242', '243' => '243', Object.new => '244', '245' => '245', Object.new => '246', '247' => '247', Object.new => '248', '249' => '249', Object.new => '250', '251' => '251', Object.new => '252', '253' => '253', Object.new => '254', '255' => '255', Object.new => '256', '257' => '257', Object.new => '258', '259' => '259', Object.new => '260', '261' => '261', Object.new => '262', '263' => '263', Object.new => '264', '265' => '265', Object.new => '266', '267' => '267', Object.new => '268', '269' => '269', Object.new => '270', '271' => '271', Object.new => '272', '273' => '273', Object.new => '274', '275' => '275', Object.new => '276', '277' => '277', Object.new => '278', '279' => '279', Object.new => '280', '281' => '281', Object.new => '282', '283' => '283', Object.new => '284', '285' => '285', Object.new => '286', '287' => '287', Object.new => '288', '289' => '289', Object.new => '290', '291' => '291', Object.new => '292', '293' => '293', Object.new => '294', '295' => '295', Object.new => '296', '297' => '297', Object.new => '298', '299' => '299', Object.new => '300', '301' => '301', Object.new => '302', '303' => '303', Object.new => '304', '305' => '305', Object.new => '306', '307' => '307', Object.new => '308', '309' => '309', Object.new => '310', '311' => '311', Object.new => '312', '313' => '313', Object.new => '314', '315' => '315', Object.new => '316', '317' => '317', Object.new => '318', '319' => '319', Object.new => '320', '321' => '321', Object.new => '322', '323' => '323', Object.new => '324', '325' => '325', Object.new => '326', '327' => '327', Object.new => '328', '329' => '329', Object.new => '330', '331' => '331', Object.new => '332', '333' => '333', Object.new => '334', '335' => '335', Object.new => '336', '337' => '337', Object.new => '338', '339' => '339', Object.new => '340', '341' => '341', Object.new => '342', '343' => '343', Object.new => '344', '345' => '345', Object.new => '346', '347' => '347', Object.new => '348', '349' => '349', Object.new => '350', '351' => '351', Object.new => '352', '353' => '353', Object.new => '354', '355' => '355', Object.new => '356', '357' => '357', Object.new => '358', '359' => '359', Object.new => '360', '361' => '361', Object.new => '362', '363' => '363', Object.new => '364', '365' => '365', Object.new => '366', '367' => '367', Object.new => '368', '369' => '369', Object.new => '370', '371' => '371', Object.new => '372', '373' => '373', Object.new => '374', '375' => '375', Object.new => '376', '377' => '377', Object.new => '378', '379' => '379', Object.new => '380', '381' => '381', Object.new => '382', '383' => '383', Object.new => '384', '385' => '385', Object.new => '386', '387' => '387', Object.new => '388', '389' => '389', Object.new => '390', '391' => '391', Object.new => '392', '393' => '393', Object.new => '394', '395' => '395', Object.new => '396', '397' => '397', Object.new => '398', '399' => '399', Object.new => '400', '401' => '401', Object.new => '402', '403' => '403', Object.new => '404', '405' => '405', Object.new => '406', '407' => '407', Object.new => '408', '409' => '409', Object.new => '410', '411' => '411', Object.new => '412', '413' => '413', Object.new => '414', '415' => '415', Object.new => '416', '417' => '417', Object.new => '418', '419' => '419', Object.new => '420', '421' => '421', Object.new => '422', '423' => '423', Object.new => '424', '425' => '425', Object.new => '426', '427' => '427', Object.new => '428', '429' => '429', Object.new => '430', '431' => '431', Object.new => '432', '433' => '433', Object.new => '434', '435' => '435', Object.new => '436', '437' => '437', Object.new => '438', '439' => '439', Object.new => '440', '441' => '441', Object.new => '442', '443' => '443', Object.new => '444', '445' => '445', Object.new => '446', '447' => '447', Object.new => '448', '449' => '449', Object.new => '450', '451' => '451', Object.new => '452', '453' => '453', Object.new => '454', '455' => '455', Object.new => '456', '457' => '457', Object.new => '458', '459' => '459', Object.new => '460', '461' => '461', Object.new => '462', '463' => '463', Object.new => '464', '465' => '465', Object.new => '466', '467' => '467', Object.new => '468', '469' => '469', Object.new => '470', '471' => '471', Object.new => '472', '473' => '473', Object.new => '474', '475' => '475', Object.new => '476', '477' => '477', Object.new => '478', '479' => '479', Object.new => '480', '481' => '481', Object.new => '482', '483' => '483', Object.new => '484', '485' => '485', Object.new => '486', '487' => '487', Object.new => '488', '489' => '489', Object.new => '490', '491' => '491', Object.new => '492', '493' => '493', Object.new => '494', '495' => '495', Object.new => '496', '497' => '497', Object.new => '498', '499' => '499', Object.new => '500', '501' => '501', Object.new => '502', '503' => '503', Object.new => '504', '505' => '505', Object.new => '506', '507' => '507', Object.new => '508', '509' => '509', Object.new => '510', '511' => '511', Object.new => '512', '513' => '513', Object.new => '514', '515' => '515', Object.new => '516', '517' => '517', Object.new => '518', '519' => '519', Object.new => '520', '521' => '521', Object.new => '522', '523' => '523', Object.new => '524', '525' => '525', Object.new => '526', '527' => '527', Object.new => '528', '529' => '529', Object.new => '530', '531' => '531', Object.new => '532', '533' => '533', Object.new => '534', '535' => '535', Object.new => '536', '537' => '537', Object.new => '538', '539' => '539', Object.new => '540', '541' => '541', Object.new => '542', '543' => '543', Object.new => '544', '545' => '545', Object.new => '546', '547' => '547', Object.new => '548', '549' => '549', Object.new => '550', '551' => '551', Object.new => '552', '553' => '553', Object.new => '554', '555' => '555', Object.new => '556', '557' => '557', Object.new => '558', '559' => '559', Object.new => '560', '561' => '561', Object.new => '562', '563' => '563', Object.new => '564', '565' => '565', Object.new => '566', '567' => '567', Object.new => '568', '569' => '569', Object.new => '570', '571' => '571', Object.new => '572', '573' => '573', Object.new => '574', '575' => '575', Object.new => '576', '577' => '577', Object.new => '578', '579' => '579', Object.new => '580', '581' => '581', Object.new => '582', '583' => '583', Object.new => '584', '585' => '585', Object.new => '586', '587' => '587', Object.new => '588', '589' => '589', Object.new => '590', '591' => '591', Object.new => '592', '593' => '593', Object.new => '594', '595' => '595', Object.new => '596', '597' => '597', Object.new => '598', '599' => '599', Object.new => '600', '601' => '601', Object.new => '602', '603' => '603', Object.new => '604', '605' => '605', Object.new => '606', '607' => '607', Object.new => '608', '609' => '609', Object.new => '610', '611' => '611', Object.new => '612', '613' => '613', Object.new => '614', '615' => '615', Object.new => '616', '617' => '617', Object.new => '618', '619' => '619', Object.new => '620', '621' => '621', Object.new => '622', '623' => '623', Object.new => '624', '625' => '625', Object.new => '626', '627' => '627', Object.new => '628', '629' => '629', Object.new => '630', '631' => '631', Object.new => '632', '633' => '633', Object.new => '634', '635' => '635', Object.new => '636', '637' => '637', Object.new => '638', '639' => '639', Object.new => '640', '641' => '641', Object.new => '642', '643' => '643', Object.new => '644', '645' => '645', Object.new => '646', '647' => '647', Object.new => '648', '649' => '649', Object.new => '650', '651' => '651', Object.new => '652', '653' => '653', Object.new => '654', '655' => '655', Object.new => '656', '657' => '657', Object.new => '658', '659' => '659', Object.new => '660', '661' => '661', Object.new => '662', '663' => '663', Object.new => '664', '665' => '665', Object.new => '666', '667' => '667', Object.new => '668', '669' => '669', Object.new => '670', '671' => '671', Object.new => '672', '673' => '673', Object.new => '674', '675' => '675', Object.new => '676', '677' => '677', Object.new => '678', '679' => '679', Object.new => '680', '681' => '681', Object.new => '682', '683' => '683', Object.new => '684', '685' => '685', Object.new => '686', '687' => '687', Object.new => '688', '689' => '689', Object.new => '690', '691' => '691', Object.new => '692', '693' => '693', Object.new => '694', '695' => '695', Object.new => '696', '697' => '697', Object.new => '698', '699' => '699', Object.new => '700', '701' => '701', Object.new => '702', '703' => '703', Object.new => '704', '705' => '705', Object.new => '706', '707' => '707', Object.new => '708', '709' => '709', Object.new => '710', '711' => '711', Object.new => '712', '713' => '713', Object.new => '714', '715' => '715', Object.new => '716', '717' => '717', Object.new => '718', '719' => '719', Object.new => '720', '721' => '721', Object.new => '722', '723' => '723', Object.new => '724', '725' => '725', Object.new => '726', '727' => '727', Object.new => '728', '729' => '729', Object.new => '730', '731' => '731', Object.new => '732', '733' => '733', Object.new => '734', '735' => '735', Object.new => '736', '737' => '737', Object.new => '738', '739' => '739', Object.new => '740', '741' => '741', Object.new => '742', '743' => '743', Object.new => '744', '745' => '745', Object.new => '746', '747' => '747', Object.new => '748', '749' => '749', Object.new => '750', '751' => '751', Object.new => '752', '753' => '753', Object.new => '754', '755' => '755', Object.new => '756', '757' => '757', Object.new => '758', '759' => '759', Object.new => '760', '761' => '761', Object.new => '762', '763' => '763', Object.new => '764', '765' => '765', Object.new => '766', '767' => '767', Object.new => '768', '769' => '769', Object.new => '770', '771' => '771', Object.new => '772', '773' => '773', Object.new => '774', '775' => '775', Object.new => '776', '777' => '777', Object.new => '778', '779' => '779', Object.new => '780', '781' => '781', Object.new => '782', '783' => '783', Object.new => '784', '785' => '785', Object.new => '786', '787' => '787', Object.new => '788', '789' => '789', Object.new => '790', '791' => '791', Object.new => '792', '793' => '793', Object.new => '794', '795' => '795', Object.new => '796', '797' => '797', Object.new => '798', '799' => '799', Object.new => '800', '801' => '801', Object.new => '802', '803' => '803', Object.new => '804', '805' => '805', Object.new => '806', '807' => '807', Object.new => '808', '809' => '809', Object.new => '810', '811' => '811', Object.new => '812', '813' => '813', Object.new => '814', '815' => '815', Object.new => '816', '817' => '817', Object.new => '818', '819' => '819', Object.new => '820', '821' => '821', Object.new => '822', '823' => '823', Object.new => '824', '825' => '825', Object.new => '826', '827' => '827', Object.new => '828', '829' => '829', Object.new => '830', '831' => '831', Object.new => '832', '833' => '833', Object.new => '834', '835' => '835', Object.new => '836', '837' => '837', Object.new => '838', '839' => '839', Object.new => '840', '841' => '841', Object.new => '842', '843' => '843', Object.new => '844', '845' => '845', Object.new => '846', '847' => '847', Object.new => '848', '849' => '849', Object.new => '850', '851' => '851', Object.new => '852', '853' => '853', Object.new => '854', '855' => '855', Object.new => '856', '857' => '857', Object.new => '858', '859' => '859', Object.new => '860', '861' => '861', Object.new => '862', '863' => '863', Object.new => '864', '865' => '865', Object.new => '866', '867' => '867', Object.new => '868', '869' => '869', Object.new => '870', '871' => '871', Object.new => '872', '873' => '873', Object.new => '874', '875' => '875', Object.new => '876', '877' => '877', Object.new => '878', '879' => '879', Object.new => '880', '881' => '881', Object.new => '882', '883' => '883', Object.new => '884', '885' => '885', Object.new => '886', '887' => '887', Object.new => '888', '889' => '889', Object.new => '890', '891' => '891', Object.new => '892', '893' => '893', Object.new => '894', '895' => '895', Object.new => '896', '897' => '897', Object.new => '898', '899' => '899', Object.new => '900', '901' => '901', Object.new => '902', '903' => '903', Object.new => '904', '905' => '905', Object.new => '906', '907' => '907', Object.new => '908', '909' => '909', Object.new => '910', '911' => '911', Object.new => '912', '913' => '913', Object.new => '914', '915' => '915', Object.new => '916', '917' => '917', Object.new => '918', '919' => '919', Object.new => '920', '921' => '921', Object.new => '922', '923' => '923', Object.new => '924', '925' => '925', Object.new => '926', '927' => '927', Object.new => '928', '929' => '929', Object.new => '930', '931' => '931', Object.new => '932', '933' => '933', Object.new => '934', '935' => '935', Object.new => '936', '937' => '937', Object.new => '938', '939' => '939', Object.new => '940', '941' => '941', Object.new => '942', '943' => '943', Object.new => '944', '945' => '945', Object.new => '946', '947' => '947', Object.new => '948', '949' => '949', Object.new => '950', '951' => '951', Object.new => '952', '953' => '953', Object.new => '954', '955' => '955', Object.new => '956', '957' => '957', Object.new => '958', '959' => '959', Object.new => '960', '961' => '961', Object.new => '962', '963' => '963', Object.new => '964', '965' => '965', Object.new => '966', '967' => '967', Object.new => '968', '969' => '969', Object.new => '970', '971' => '971', Object.new => '972', '973' => '973', Object.new => '974', '975' => '975', Object.new => '976', '977' => '977', Object.new => '978', '979' => '979', Object.new => '980', '981' => '981', Object.new => '982', '983' => '983', Object.new => '984', '985' => '985', Object.new => '986', '987' => '987', Object.new => '988', '989' => '989', Object.new => '990', '991' => '991', Object.new => '992', '993' => '993', Object.new => '994', '995' => '995', Object.new => '996', '997' => '997', Object.new => '998', '999' => '999'}
+end
diff --git a/benchmark/bm_hash_literal_mixed_small.rb b/benchmark/bm_hash_literal_mixed_small.rb
new file mode 100644
index 00000000..84f6af9a
--- /dev/null
+++ b/benchmark/bm_hash_literal_mixed_small.rb
@@ -0,0 +1,3 @@
+10_000.times do
+  h = {'a' => 'b', Object.new => 'd', 'e' => 'f', Object.new => 'h', 'i' => 'j', Object.new => 'l', 'm' => 'n', Object.new => 'p'}
+end
diff --git a/benchmark/bm_hash_literal_object_large.rb b/benchmark/bm_hash_literal_object_large.rb
new file mode 100644
index 00000000..9270e9bb
--- /dev/null
+++ b/benchmark/bm_hash_literal_object_large.rb
@@ -0,0 +1,4 @@
+1000.times do
+  h = {Object.new => '0', Object.new => '1', Object.new => '2', Object.new => '3', Object.new => '4', Object.new => '5', Object.new => '6', Object.new => '7', Object.new => '8', Object.new => '9', Object.new => '10', Object.new => '11', Object.new => '12', Object.new => '13', Object.new => '14', Object.new => '15', Object.new => '16', Object.new => '17', Object.new => '18', Object.new => '19', Object.new => '20', Object.new => '21', Object.new => '22', Object.new => '23', Object.new => '24', Object.new => '25', Object.new => '26', Object.new => '27', Object.new => '28', Object.new => '29', Object.new => '30', Object.new => '31', Object.new => '32', Object.new => '33', Object.new => '34', Object.new => '35', Object.new => '36', Object.new => '37', Object.new => '38', Object.new => '39', Object.new => '40', Object.new => '41', Object.new => '42', Object.new => '43', Object.new => '44', Object.new => '45', Object.new => '46', Object.new => '47', Object.new => '48', Object.new => '49', Object.new => '50', Object.new => '51', Object.new => '52', Object.new => '53', Object.new => '54', Object.new => '55', Object.new => '56', Object.new => '57', Object.new => '58', Object.new => '59', Object.new => '60', Object.new => '61', Object.new => '62', Object.new => '63', Object.new => '64', Object.new => '65', Object.new => '66', Object.new => '67', Object.new => '68', Object.new => '69', Object.new => '70', Object.new => '71', Object.new => '72', Object.new => '73', Object.new => '74', Object.new => '75', Object.new => '76', Object.new => '77', Object.new => '78', Object.new => '79', Object.new => '80', Object.new => '81', Object.new => '82', Object.new => '83', Object.new => '84', Object.new => '85', Object.new => '86', Object.new => '87', Object.new => '88', Object.new => '89', Object.new => '90', Object.new => '91', Object.new => '92', Object.new => '93', Object.new => '94', Object.new => '95', Object.new => '96', Object.new => '97', Object.new => '98', Object.new => '99', Object.new => '100', Object.new => '101', Object.new => '102', Object.new => '103', Object.new => '104', Object.new => '105', Object.new => '106', Object.new => '107', Object.new => '108', Object.new => '109', Object.new => '110', Object.new => '111', Object.new => '112', Object.new => '113', Object.new => '114', Object.new => '115', Object.new => '116', Object.new => '117', Object.new => '118', Object.new => '119', Object.new => '120', Object.new => '121', Object.new => '122', Object.new => '123', Object.new => '124', Object.new => '125', Object.new => '126', Object.new => '127', Object.new => '128', Object.new => '129', Object.new => '130', Object.new => '131', Object.new => '132', Object.new => '133', Object.new => '134', Object.new => '135', Object.new => '136', Object.new => '137', Object.new => '138', Object.new => '139', Object.new => '140', Object.new => '141', Object.new => '142', Object.new => '143', Object.new => '144', Object.new => '145', Object.new => '146', Object.new => '147', Object.new => '148', Object.new => '149', Object.new => '150', Object.new => '151', Object.new => '152', Object.new => '153', Object.new => '154', Object.new => '155', Object.new => '156', Object.new => '157', Object.new => '158', Object.new => '159', Object.new => '160', Object.new => '161', Object.new => '162', Object.new => '163', Object.new => '164', Object.new => '165', Object.new => '166', Object.new => '167', Object.new => '168', Object.new => '169', Object.new => '170', Object.new => '171', Object.new => '172', Object.new => '173', Object.new => '174', Object.new => '175', Object.new => '176', Object.new => '177', Object.new => '178', Object.new => '179', Object.new => '180', Object.new => '181', Object.new => '182', Object.new => '183', Object.new => '184', Object.new => '185', Object.new => '186', Object.new => '187', Object.new => '188', Object.new => '189', Object.new => '190', Object.new => '191', Object.new => '192', Object.new => '193', Object.new => '194', Object.new => '195', Object.new => '196', Object.new => '197', Object.new => '198', Object.new => '199', Object.new => '200', Object.new => '201', Object.new => '202', Object.new => '203', Object.new => '204', Object.new => '205', Object.new => '206', Object.new => '207', Object.new => '208', Object.new => '209', Object.new => '210', Object.new => '211', Object.new => '212', Object.new => '213', Object.new => '214', Object.new => '215', Object.new => '216', Object.new => '217', Object.new => '218', Object.new => '219', Object.new => '220', Object.new => '221', Object.new => '222', Object.new => '223', Object.new => '224', Object.new => '225', Object.new => '226', Object.new => '227', Object.new => '228', Object.new => '229', Object.new => '230', Object.new => '231', Object.new => '232', Object.new => '233', Object.new => '234', Object.new => '235', Object.new => '236', Object.new => '237', Object.new => '238', Object.new => '239', Object.new => '240', Object.new => '241', Object.new => '242', Object.new => '243', Object.new => '244', Object.new => '245', Object.new => '246', Object.new => '247', Object.new => '248', Object.new => '249', Object.new => '250', Object.new => '251', Object.new => '252', Object.new => '253', Object.new => '254', Object.new => '255', Object.new => '256', Object.new => '257', Object.new => '258', Object.new => '259', Object.new => '260', Object.new => '261', Object.new => '262', Object.new => '263', Object.new => '264', Object.new => '265', Object.new => '266', Object.new => '267', Object.new => '268', Object.new => '269', Object.new => '270', Object.new => '271', Object.new => '272', Object.new => '273', Object.new => '274', Object.new => '275', Object.new => '276', Object.new => '277', Object.new => '278', Object.new => '279', Object.new => '280', Object.new => '281', Object.new => '282', Object.new => '283', Object.new => '284', Object.new => '285', Object.new => '286', Object.new => '287', Object.new => '288', Object.new => '289', Object.new => '290', Object.new => '291', Object.new => '292', Object.new => '293', Object.new => '294', Object.new => '295', Object.new => '296', Object.new => '297', Object.new => '298', Object.new => '299', Object.new => '300', Object.new => '301', Object.new => '302', Object.new => '303', Object.new => '304', Object.new => '305', Object.new => '306', Object.new => '307', Object.new => '308', Object.new => '309', Object.new => '310', Object.new => '311', Object.new => '312', Object.new => '313', Object.new => '314', Object.new => '315', Object.new => '316', Object.new => '317', Object.new => '318', Object.new => '319', Object.new => '320', Object.new => '321', Object.new => '322', Object.new => '323', Object.new => '324', Object.new => '325', Object.new => '326', Object.new => '327', Object.new => '328', Object.new => '329', Object.new => '330', Object.new => '331', Object.new => '332', Object.new => '333', Object.new => '334', Object.new => '335', Object.new => '336', Object.new => '337', Object.new => '338', Object.new => '339', Object.new => '340', Object.new => '341', Object.new => '342', Object.new => '343', Object.new => '344', Object.new => '345', Object.new => '346', Object.new => '347', Object.new => '348', Object.new => '349', Object.new => '350', Object.new => '351', Object.new => '352', Object.new => '353', Object.new => '354', Object.new => '355', Object.new => '356', Object.new => '357', Object.new => '358', Object.new => '359', Object.new => '360', Object.new => '361', Object.new => '362', Object.new => '363', Object.new => '364', Object.new => '365', Object.new => '366', Object.new => '367', Object.new => '368', Object.new => '369', Object.new => '370', Object.new => '371', Object.new => '372', Object.new => '373', Object.new => '374', Object.new => '375', Object.new => '376', Object.new => '377', Object.new => '378', Object.new => '379', Object.new => '380', Object.new => '381', Object.new => '382', Object.new => '383', Object.new => '384', Object.new => '385', Object.new => '386', Object.new => '387', Object.new => '388', Object.new => '389', Object.new => '390', Object.new => '391', Object.new => '392', Object.new => '393', Object.new => '394', Object.new => '395', Object.new => '396', Object.new => '397', Object.new => '398', Object.new => '399', Object.new => '400', Object.new => '401', Object.new => '402', Object.new => '403', Object.new => '404', Object.new => '405', Object.new => '406', Object.new => '407', Object.new => '408', Object.new => '409', Object.new => '410', Object.new => '411', Object.new => '412', Object.new => '413', Object.new => '414', Object.new => '415', Object.new => '416', Object.new => '417', Object.new => '418', Object.new => '419', Object.new => '420', Object.new => '421', Object.new => '422', Object.new => '423', Object.new => '424', Object.new => '425', Object.new => '426', Object.new => '427', Object.new => '428', Object.new => '429', Object.new => '430', Object.new => '431', Object.new => '432', Object.new => '433', Object.new => '434', Object.new => '435', Object.new => '436', Object.new => '437', Object.new => '438', Object.new => '439', Object.new => '440', Object.new => '441', Object.new => '442', Object.new => '443', Object.new => '444', Object.new => '445', Object.new => '446', Object.new => '447', Object.new => '448', Object.new => '449', Object.new => '450', Object.new => '451', Object.new => '452', Object.new => '453', Object.new => '454', Object.new => '455', Object.new => '456', Object.new => '457', Object.new => '458', Object.new => '459', Object.new => '460', Object.new => '461', Object.new => '462', Object.new => '463', Object.new => '464', Object.new => '465', Object.new => '466', Object.new => '467', Object.new => '468', Object.new => '469', Object.new => '470', Object.new => '471', Object.new => '472', Object.new => '473', Object.new => '474', Object.new => '475', Object.new => '476', Object.new => '477', Object.new => '478', Object.new => '479', Object.new => '480', Object.new => '481', Object.new => '482', Object.new => '483', Object.new => '484', Object.new => '485', Object.new => '486', Object.new => '487', Object.new => '488', Object.new => '489', Object.new => '490', Object.new => '491', Object.new => '492', Object.new => '493', Object.new => '494', Object.new => '495', Object.new => '496', Object.new => '497', Object.new => '498', Object.new => '499', Object.new => '500', Object.new => '501', Object.new => '502', Object.new => '503', Object.new => '504', Object.new => '505', Object.new => '506', Object.new => '507', Object.new => '508', Object.new => '509', Object.new => '510', Object.new => '511', Object.new => '512', Object.new => '513', Object.new => '514', Object.new => '515', Object.new => '516', Object.new => '517', Object.new => '518', Object.new => '519', Object.new => '520', Object.new => '521', Object.new => '522', Object.new => '523', Object.new => '524', Object.new => '525', Object.new => '526', Object.new => '527', Object.new => '528', Object.new => '529', Object.new => '530', Object.new => '531', Object.new => '532', Object.new => '533', Object.new => '534', Object.new => '535', Object.new => '536', Object.new => '537', Object.new => '538', Object.new => '539', Object.new => '540', Object.new => '541', Object.new => '542', Object.new => '543', Object.new => '544', Object.new => '545', Object.new => '546', Object.new => '547', Object.new => '548', Object.new => '549', Object.new => '550', Object.new => '551', Object.new => '552', Object.new => '553', Object.new => '554', Object.new => '555', Object.new => '556', Object.new => '557', Object.new => '558', Object.new => '559', Object.new => '560', Object.new => '561', Object.new => '562', Object.new => '563', Object.new => '564', Object.new => '565', Object.new => '566', Object.new => '567', Object.new => '568', Object.new => '569', Object.new => '570', Object.new => '571', Object.new => '572', Object.new => '573', Object.new => '574', 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'622', Object.new => '623', Object.new => '624', Object.new => '625', Object.new => '626', Object.new => '627', Object.new => '628', Object.new => '629', Object.new => '630', Object.new => '631', Object.new => '632', Object.new => '633', Object.new => '634', Object.new => '635', Object.new => '636', Object.new => '637', Object.new => '638', Object.new => '639', Object.new => '640', Object.new => '641', Object.new => '642', Object.new => '643', Object.new => '644', Object.new => '645', Object.new => '646', Object.new => '647', Object.new => '648', Object.new => '649', Object.new => '650', Object.new => '651', Object.new => '652', Object.new => '653', Object.new => '654', Object.new => '655', Object.new => '656', Object.new => '657', Object.new => '658', Object.new => '659', Object.new => '660', Object.new => '661', Object.new => '662', Object.new => '663', Object.new => '664', Object.new => '665', Object.new => '666', Object.new => '667', Object.new => '668', Object.new => '669', Object.new => '670', Object.new => '671', Object.new => '672', Object.new => '673', Object.new => '674', Object.new => '675', Object.new => '676', Object.new => '677', Object.new => '678', Object.new => '679', Object.new => '680', Object.new => '681', Object.new => '682', Object.new => '683', Object.new => '684', Object.new => '685', Object.new => '686', Object.new => '687', Object.new => '688', Object.new => '689', Object.new => '690', Object.new => '691', Object.new => '692', Object.new => '693', Object.new => '694', Object.new => '695', Object.new => '696', Object.new => '697', Object.new => '698', Object.new => '699', Object.new => '700', Object.new => '701', Object.new => '702', Object.new => '703', Object.new => '704', Object.new => '705', Object.new => '706', Object.new => '707', Object.new => '708', Object.new => '709', Object.new => '710', Object.new => '711', Object.new => '712', Object.new => '713', Object.new => '714', Object.new => '715', Object.new => '716', Object.new => '717', Object.new => '718', Object.new => '719', Object.new => '720', Object.new => '721', Object.new => '722', Object.new => '723', Object.new => '724', Object.new => '725', Object.new => '726', Object.new => '727', Object.new => '728', Object.new => '729', Object.new => '730', Object.new => '731', Object.new => '732', Object.new => '733', Object.new => '734', Object.new => '735', Object.new => '736', Object.new => '737', Object.new => '738', Object.new => '739', Object.new => '740', Object.new => '741', Object.new => '742', Object.new => '743', Object.new => '744', Object.new => '745', Object.new => '746', Object.new => '747', Object.new => '748', Object.new => '749', Object.new => '750', Object.new => '751', Object.new => '752', Object.new => '753', Object.new => '754', Object.new => '755', Object.new => '756', Object.new => '757', Object.new => '758', Object.new => '759', Object.new => '760', Object.new => '761', Object.new => '762', Object.new => '763', Object.new => '764', Object.new => '765', Object.new => '766', Object.new => '767', Object.new => '768', Object.new => '769', Object.new => '770', Object.new => '771', Object.new => '772', Object.new => '773', Object.new => '774', Object.new => '775', Object.new => '776', Object.new => '777', Object.new => '778', Object.new => '779', Object.new => '780', Object.new => '781', Object.new => '782', Object.new => '783', Object.new => '784', Object.new => '785', Object.new => '786', Object.new => '787', Object.new => '788', Object.new => '789', Object.new => '790', Object.new => '791', Object.new => '792', Object.new => '793', Object.new => '794', Object.new => '795', Object.new => '796', Object.new => '797', Object.new => '798', Object.new => '799', Object.new => '800', Object.new => '801', Object.new => '802', Object.new => '803', Object.new => '804', Object.new => '805', Object.new => '806', Object.new => '807', Object.new => '808', Object.new => '809', Object.new => '810', Object.new => '811', Object.new => '812', Object.new => '813', Object.new => '814', Object.new => '815', Object.new => '816', Object.new => '817', Object.new => '818', Object.new => '819', Object.new => '820', Object.new => '821', Object.new => '822', Object.new => '823', Object.new => '824', Object.new => '825', Object.new => '826', Object.new => '827', Object.new => '828', Object.new => '829', Object.new => '830', Object.new => '831', Object.new => '832', Object.new => '833', Object.new => '834', Object.new => '835', Object.new => '836', Object.new => '837', Object.new => '838', Object.new => '839', Object.new => '840', Object.new => '841', Object.new => '842', Object.new => '843', Object.new => '844', Object.new => '845', Object.new => '846', Object.new => '847', Object.new => '848', Object.new => '849', Object.new => '850', Object.new => '851', Object.new => '852', Object.new => '853', Object.new => '854', Object.new => '855', Object.new => '856', Object.new => '857', Object.new => '858', Object.new => '859', Object.new => '860', Object.new => '861', Object.new => '862', Object.new => '863', Object.new => '864', Object.new => '865', Object.new => '866', Object.new => '867', Object.new => '868', Object.new => '869', Object.new => '870', Object.new => '871', Object.new => '872', Object.new => '873', Object.new => '874', Object.new => '875', Object.new => '876', Object.new => '877', Object.new => '878', Object.new => '879', Object.new => '880', Object.new => '881', Object.new => '882', Object.new => '883', Object.new => '884', Object.new => '885', Object.new => '886', Object.new => '887', Object.new => '888', Object.new => '889', Object.new => '890', Object.new => '891', Object.new => '892', Object.new => '893', Object.new => '894', Object.new => '895', Object.new => '896', Object.new => '897', Object.new => '898', Object.new => '899', Object.new => '900', Object.new => '901', Object.new => '902', Object.new => '903', Object.new => '904', Object.new => '905', Object.new => '906', Object.new => '907', Object.new => '908', Object.new => '909', Object.new => '910', Object.new => '911', Object.new => '912', Object.new => '913', Object.new => '914', Object.new => '915', Object.new => '916', Object.new => '917', Object.new => '918', Object.new => '919', Object.new => '920', Object.new => '921', Object.new => '922', Object.new => '923', Object.new => '924', Object.new => '925', Object.new => '926', Object.new => '927', Object.new => '928', Object.new => '929', Object.new => '930', Object.new => '931', Object.new => '932', Object.new => '933', Object.new => '934', Object.new => '935', Object.new => '936', Object.new => '937', Object.new => '938', Object.new => '939', Object.new => '940', Object.new => '941', Object.new => '942', Object.new => '943', Object.new => '944', Object.new => '945', Object.new => '946', Object.new => '947', Object.new => '948', Object.new => '949', Object.new => '950', Object.new => '951', Object.new => '952', Object.new => '953', Object.new => '954', Object.new => '955', Object.new => '956', Object.new => '957', Object.new => '958', Object.new => '959', Object.new => '960', Object.new => '961', Object.new => '962', Object.new => '963', Object.new => '964', Object.new => '965', Object.new => '966', Object.new => '967', Object.new => '968', Object.new => '969', Object.new => '970', Object.new => '971', Object.new => '972', Object.new => '973', Object.new => '974', Object.new => '975', Object.new => '976', Object.new => '977', Object.new => '978', Object.new => '979', Object.new => '980', Object.new => '981', Object.new => '982', Object.new => '983', Object.new => '984', Object.new => '985', Object.new => '986', Object.new => '987', Object.new => '988', Object.new => '989', Object.new => '990', Object.new => '991', Object.new => '992', Object.new => '993', Object.new => '994', Object.new => '995', Object.new => '996', Object.new => '997', Object.new => '998', Object.new => '999'}
+end
+
diff --git a/benchmark/bm_hash_literal_object_small.rb b/benchmark/bm_hash_literal_object_small.rb
new file mode 100644
index 00000000..1a50ebbd
--- /dev/null
+++ b/benchmark/bm_hash_literal_object_small.rb
@@ -0,0 +1,3 @@
+10_000.times do
+  h = {Object.new => 'b', Object.new => 'd', Object.new => 'f', Object.new => 'h', Object.new => 'j', Object.new => 'l', Object.new => 'n', Object.new => 'p'}
+end
diff --git a/benchmark/bm_hash_literal_string_large.rb b/benchmark/bm_hash_literal_string_large.rb
new file mode 100644
index 00000000..fdf4f4dd
--- /dev/null
+++ b/benchmark/bm_hash_literal_string_large.rb
@@ -0,0 +1,4 @@
+10_000.times do
+  h = {"0"=>"0", "1"=>"1", "2"=>"2", "3"=>"3", "4"=>"4", "5"=>"5", "6"=>"6", "7"=>"7", "8"=>"8", "9"=>"9", "10"=>"10", "11"=>"11", "12"=>"12", "13"=>"13", "14"=>"14", "15"=>"15", "16"=>"16", "17"=>"17", "18"=>"18", "19"=>"19", "20"=>"20", "21"=>"21", "22"=>"22", "23"=>"23", "24"=>"24", "25"=>"25", "26"=>"26", "27"=>"27", "28"=>"28", "29"=>"29", "30"=>"30", "31"=>"31", "32"=>"32", "33"=>"33", "34"=>"34", "35"=>"35", "36"=>"36", "37"=>"37", "38"=>"38", "39"=>"39", "40"=>"40", "41"=>"41", "42"=>"42", "43"=>"43", "44"=>"44", "45"=>"45", "46"=>"46", "47"=>"47", "48"=>"48", "49"=>"49", "50"=>"50", "51"=>"51", "52"=>"52", "53"=>"53", "54"=>"54", "55"=>"55", "56"=>"56", "57"=>"57", "58"=>"58", "59"=>"59", "60"=>"60", "61"=>"61", "62"=>"62", "63"=>"63", "64"=>"64", "65"=>"65", "66"=>"66", "67"=>"67", "68"=>"68", "69"=>"69", "70"=>"70", "71"=>"71", "72"=>"72", "73"=>"73", "74"=>"74", "75"=>"75", "76"=>"76", "77"=>"77", "78"=>"78", "79"=>"79", "80"=>"80", "81"=>"81", "82"=>"82", "83"=>"83", "84"=>"84", "85"=>"85", "86"=>"86", "87"=>"87", "88"=>"88", "89"=>"89", "90"=>"90", "91"=>"91", "92"=>"92", "93"=>"93", "94"=>"94", "95"=>"95", "96"=>"96", "97"=>"97", "98"=>"98", "99"=>"99", "100"=>"100", "101"=>"101", "102"=>"102", "103"=>"103", "104"=>"104", "105"=>"105", "106"=>"106", "107"=>"107", "108"=>"108", "109"=>"109", "110"=>"110", "111"=>"111", "112"=>"112", "113"=>"113", "114"=>"114", "115"=>"115", "116"=>"116", "117"=>"117", "118"=>"118", "119"=>"119", "120"=>"120", "121"=>"121", "122"=>"122", "123"=>"123", "124"=>"124", "125"=>"125", "126"=>"126", "127"=>"127", "128"=>"128", "129"=>"129", "130"=>"130", "131"=>"131", "132"=>"132", "133"=>"133", "134"=>"134", "135"=>"135", "136"=>"136", "137"=>"137", "138"=>"138", "139"=>"139", "140"=>"140", "141"=>"141", "142"=>"142", "143"=>"143", "144"=>"144", "145"=>"145", "146"=>"146", "147"=>"147", "148"=>"148", "149"=>"149", "150"=>"150", "151"=>"151", "152"=>"152", "153"=>"153", "154"=>"154", "155"=>"155", "156"=>"156", "157"=>"157", "158"=>"158", "159"=>"159", "160"=>"160", "161"=>"161", "162"=>"162", "163"=>"163", "164"=>"164", "165"=>"165", "166"=>"166", "167"=>"167", "168"=>"168", "169"=>"169", "170"=>"170", "171"=>"171", "172"=>"172", "173"=>"173", "174"=>"174", "175"=>"175", "176"=>"176", "177"=>"177", "178"=>"178", "179"=>"179", "180"=>"180", "181"=>"181", "182"=>"182", "183"=>"183", "184"=>"184", "185"=>"185", "186"=>"186", "187"=>"187", "188"=>"188", "189"=>"189", "190"=>"190", "191"=>"191", "192"=>"192", "193"=>"193", "194"=>"194", "195"=>"195", "196"=>"196", "197"=>"197", "198"=>"198", "199"=>"199", "200"=>"200", "201"=>"201", "202"=>"202", "203"=>"203", "204"=>"204", "205"=>"205", "206"=>"206", "207"=>"207", "208"=>"208", "209"=>"209", "210"=>"210", "211"=>"211", "212"=>"212", "213"=>"213", "214"=>"214", "215"=>"215", "216"=>"216", "217"=>"217", "218"=>"218", "219"=>"219", "220"=>"220", "221"=>"221", "222"=>"222", "223"=>"223", "224"=>"224", "225"=>"225", "226"=>"226", "227"=>"227", "228"=>"228", "229"=>"229", "230"=>"230", "231"=>"231", "232"=>"232", "233"=>"233", "234"=>"234", "235"=>"235", "236"=>"236", "237"=>"237", "238"=>"238", "239"=>"239", "240"=>"240", "241"=>"241", "242"=>"242", "243"=>"243", "244"=>"244", "245"=>"245", "246"=>"246", "247"=>"247", "248"=>"248", "249"=>"249", "250"=>"250", "251"=>"251", "252"=>"252", "253"=>"253", "254"=>"254", "255"=>"255", "256"=>"256", "257"=>"257", "258"=>"258", "259"=>"259", "260"=>"260", "261"=>"261", "262"=>"262", "263"=>"263", "264"=>"264", "265"=>"265", "266"=>"266", "267"=>"267", "268"=>"268", "269"=>"269", "270"=>"270", "271"=>"271", "272"=>"272", "273"=>"273", "274"=>"274", "275"=>"275", "276"=>"276", "277"=>"277", "278"=>"278", "279"=>"279", "280"=>"280", "281"=>"281", "282"=>"282", "283"=>"283", "284"=>"284", "285"=>"285", "286"=>"286", "287"=>"287", "288"=>"288", "289"=>"289", "290"=>"290", "291"=>"291", "292"=>"292", "293"=>"293", "294"=>"294", "295"=>"295", "296"=>"296", "297"=>"297", "298"=>"298", "299"=>"299", "300"=>"300", "301"=>"301", "302"=>"302", "303"=>"303", "304"=>"304", "305"=>"305", "306"=>"306", "307"=>"307", "308"=>"308", "309"=>"309", "310"=>"310", "311"=>"311", "312"=>"312", "313"=>"313", "314"=>"314", "315"=>"315", "316"=>"316", "317"=>"317", "318"=>"318", "319"=>"319", "320"=>"320", "321"=>"321", "322"=>"322", "323"=>"323", "324"=>"324", "325"=>"325", "326"=>"326", "327"=>"327", "328"=>"328", "329"=>"329", "330"=>"330", "331"=>"331", "332"=>"332", "333"=>"333", "334"=>"334", "335"=>"335", "336"=>"336", "337"=>"337", "338"=>"338", "339"=>"339", "340"=>"340", "341"=>"341", "342"=>"342", "343"=>"343", "344"=>"344", "345"=>"345", "346"=>"346", "347"=>"347", "348"=>"348", "349"=>"349", "350"=>"350", "351"=>"351", "352"=>"352", "353"=>"353", "354"=>"354", "355"=>"355", "356"=>"356", "357"=>"357", "358"=>"358", "359"=>"359", "360"=>"360", "361"=>"361", "362"=>"362", "363"=>"363", "364"=>"364", "365"=>"365", "366"=>"366", "367"=>"367", "368"=>"368", "369"=>"369", "370"=>"370", "371"=>"371", "372"=>"372", "373"=>"373", "374"=>"374", "375"=>"375", "376"=>"376", "377"=>"377", "378"=>"378", "379"=>"379", "380"=>"380", "381"=>"381", "382"=>"382", "383"=>"383", "384"=>"384", "385"=>"385", "386"=>"386", "387"=>"387", "388"=>"388", "389"=>"389", "390"=>"390", "391"=>"391", "392"=>"392", "393"=>"393", "394"=>"394", "395"=>"395", "396"=>"396", "397"=>"397", "398"=>"398", "399"=>"399", "400"=>"400", "401"=>"401", "402"=>"402", "403"=>"403", "404"=>"404", "405"=>"405", "406"=>"406", "407"=>"407", "408"=>"408", "409"=>"409", "410"=>"410", "411"=>"411", "412"=>"412", "413"=>"413", "414"=>"414", "415"=>"415", "416"=>"416", "417"=>"417", "418"=>"418", "419"=>"419", "420"=>"420", "421"=>"421", "422"=>"422", "423"=>"423", "424"=>"424", "425"=>"425", "426"=>"426", "427"=>"427", "428"=>"428", "429"=>"429", "430"=>"430", "431"=>"431", "432"=>"432", "433"=>"433", "434"=>"434", "435"=>"435", "436"=>"436", "437"=>"437", "438"=>"438", "439"=>"439", "440"=>"440", "441"=>"441", "442"=>"442", "443"=>"443", "444"=>"444", "445"=>"445", "446"=>"446", "447"=>"447", "448"=>"448", "449"=>"449", "450"=>"450", "451"=>"451", "452"=>"452", "453"=>"453", "454"=>"454", "455"=>"455", "456"=>"456", "457"=>"457", "458"=>"458", "459"=>"459", "460"=>"460", "461"=>"461", "462"=>"462", "463"=>"463", "464"=>"464", "465"=>"465", "466"=>"466", "467"=>"467", "468"=>"468", "469"=>"469", "470"=>"470", "471"=>"471", "472"=>"472", "473"=>"473", "474"=>"474", "475"=>"475", "476"=>"476", "477"=>"477", "478"=>"478", "479"=>"479", "480"=>"480", "481"=>"481", "482"=>"482", "483"=>"483", "484"=>"484", "485"=>"485", "486"=>"486", "487"=>"487", "488"=>"488", "489"=>"489", "490"=>"490", "491"=>"491", "492"=>"492", "493"=>"493", "494"=>"494", "495"=>"495", "496"=>"496", "497"=>"497", "498"=>"498", "499"=>"499", "500"=>"500", "501"=>"501", "502"=>"502", "503"=>"503", "504"=>"504", "505"=>"505", "506"=>"506", "507"=>"507", "508"=>"508", "509"=>"509", "510"=>"510", "511"=>"511", "512"=>"512", "513"=>"513", "514"=>"514", "515"=>"515", "516"=>"516", "517"=>"517", "518"=>"518", "519"=>"519", "520"=>"520", "521"=>"521", "522"=>"522", "523"=>"523", "524"=>"524", "525"=>"525", "526"=>"526", "527"=>"527", "528"=>"528", "529"=>"529", "530"=>"530", "531"=>"531", "532"=>"532", "533"=>"533", "534"=>"534", "535"=>"535", "536"=>"536", "537"=>"537", "538"=>"538", "539"=>"539", "540"=>"540", "541"=>"541", "542"=>"542", "543"=>"543", "544"=>"544", "545"=>"545", "546"=>"546", "547"=>"547", "548"=>"548", "549"=>"549", "550"=>"550", "551"=>"551", "552"=>"552", "553"=>"553", "554"=>"554", "555"=>"555", "556"=>"556", "557"=>"557", "558"=>"558", "559"=>"559", "560"=>"560", "561"=>"561", "562"=>"562", "563"=>"563", "564"=>"564", "565"=>"565", "566"=>"566", "567"=>"567", "568"=>"568", "569"=>"569", "570"=>"570", "571"=>"571", "572"=>"572", "573"=>"573", "574"=>"574", "575"=>"575", "576"=>"576", "577"=>"577", "578"=>"578", "579"=>"579", "580"=>"580", "581"=>"581", "582"=>"582", "583"=>"583", "584"=>"584", "585"=>"585", "586"=>"586", "587"=>"587", "588"=>"588", "589"=>"589", "590"=>"590", "591"=>"591", "592"=>"592", "593"=>"593", "594"=>"594", "595"=>"595", "596"=>"596", "597"=>"597", "598"=>"598", "599"=>"599", "600"=>"600", "601"=>"601", "602"=>"602", "603"=>"603", "604"=>"604", "605"=>"605", "606"=>"606", "607"=>"607", "608"=>"608", "609"=>"609", "610"=>"610", "611"=>"611", "612"=>"612", "613"=>"613", "614"=>"614", "615"=>"615", "616"=>"616", "617"=>"617", "618"=>"618", "619"=>"619", "620"=>"620", "621"=>"621", "622"=>"622", "623"=>"623", "624"=>"624", "625"=>"625", "626"=>"626", "627"=>"627", "628"=>"628", "629"=>"629", "630"=>"630", "631"=>"631", "632"=>"632", "633"=>"633", "634"=>"634", "635"=>"635", "636"=>"636", "637"=>"637", "638"=>"638", "639"=>"639", "640"=>"640", "641"=>"641", "642"=>"642", "643"=>"643", "644"=>"644", "645"=>"645", "646"=>"646", "647"=>"647", "648"=>"648", "649"=>"649", "650"=>"650", "651"=>"651", "652"=>"652", "653"=>"653", "654"=>"654", "655"=>"655", "656"=>"656", "657"=>"657", "658"=>"658", "659"=>"659", "660"=>"660", "661"=>"661", "662"=>"662", "663"=>"663", "664"=>"664", "665"=>"665", "666"=>"666", "667"=>"667", "668"=>"668", "669"=>"669", "670"=>"670", "671"=>"671", "672"=>"672", "673"=>"673", "674"=>"674", "675"=>"675", "676"=>"676", "677"=>"677", "678"=>"678", "679"=>"679", "680"=>"680", "681"=>"681", "682"=>"682", "683"=>"683", "684"=>"684", "685"=>"685", "686"=>"686", "687"=>"687", "688"=>"688", "689"=>"689", "690"=>"690", "691"=>"691", "692"=>"692", "693"=>"693", "694"=>"694", "695"=>"695", "696"=>"696", "697"=>"697", "698"=>"698", "699"=>"699", "700"=>"700", "701"=>"701", "702"=>"702", "703"=>"703", "704"=>"704", "705"=>"705", "706"=>"706", "707"=>"707", "708"=>"708", "709"=>"709", "710"=>"710", "711"=>"711", "712"=>"712", "713"=>"713", "714"=>"714", "715"=>"715", "716"=>"716", "717"=>"717", "718"=>"718", "719"=>"719", "720"=>"720", "721"=>"721", "722"=>"722", "723"=>"723", "724"=>"724", "725"=>"725", "726"=>"726", "727"=>"727", "728"=>"728", "729"=>"729", "730"=>"730", "731"=>"731", "732"=>"732", "733"=>"733", "734"=>"734", "735"=>"735", "736"=>"736", "737"=>"737", "738"=>"738", "739"=>"739", "740"=>"740", "741"=>"741", "742"=>"742", "743"=>"743", "744"=>"744", "745"=>"745", "746"=>"746", "747"=>"747", "748"=>"748", "749"=>"749", "750"=>"750", "751"=>"751", "752"=>"752", "753"=>"753", "754"=>"754", "755"=>"755", "756"=>"756", "757"=>"757", "758"=>"758", "759"=>"759", "760"=>"760", "761"=>"761", "762"=>"762", "763"=>"763", "764"=>"764", "765"=>"765", "766"=>"766", "767"=>"767", "768"=>"768", "769"=>"769", "770"=>"770", "771"=>"771", "772"=>"772", "773"=>"773", "774"=>"774", "775"=>"775", "776"=>"776", "777"=>"777", "778"=>"778", "779"=>"779", "780"=>"780", "781"=>"781", "782"=>"782", "783"=>"783", "784"=>"784", "785"=>"785", "786"=>"786", "787"=>"787", "788"=>"788", "789"=>"789", "790"=>"790", "791"=>"791", "792"=>"792", "793"=>"793", "794"=>"794", "795"=>"795", "796"=>"796", "797"=>"797", "798"=>"798", "799"=>"799", "800"=>"800", "801"=>"801", "802"=>"802", "803"=>"803", "804"=>"804", "805"=>"805", "806"=>"806", "807"=>"807", "808"=>"808", "809"=>"809", "810"=>"810", "811"=>"811", "812"=>"812", "813"=>"813", "814"=>"814", "815"=>"815", "816"=>"816", "817"=>"817", "818"=>"818", "819"=>"819", "820"=>"820", "821"=>"821", "822"=>"822", "823"=>"823", "824"=>"824", "825"=>"825", "826"=>"826", "827"=>"827", "828"=>"828", "829"=>"829", "830"=>"830", "831"=>"831", "832"=>"832", "833"=>"833", "834"=>"834", "835"=>"835", "836"=>"836", "837"=>"837", "838"=>"838", "839"=>"839", "840"=>"840", "841"=>"841", "842"=>"842", "843"=>"843", "844"=>"844", "845"=>"845", "846"=>"846", "847"=>"847", "848"=>"848", "849"=>"849", "850"=>"850", "851"=>"851", "852"=>"852", "853"=>"853", "854"=>"854", "855"=>"855", "856"=>"856", "857"=>"857", "858"=>"858", "859"=>"859", "860"=>"860", "861"=>"861", "862"=>"862", "863"=>"863", "864"=>"864", "865"=>"865", "866"=>"866", "867"=>"867", "868"=>"868", "869"=>"869", "870"=>"870", "871"=>"871", "872"=>"872", "873"=>"873", "874"=>"874", "875"=>"875", "876"=>"876", "877"=>"877", "878"=>"878", "879"=>"879", "880"=>"880", "881"=>"881", "882"=>"882", "883"=>"883", "884"=>"884", "885"=>"885", "886"=>"886", "887"=>"887", "888"=>"888", "889"=>"889", "890"=>"890", "891"=>"891", "892"=>"892", "893"=>"893", "894"=>"894", "895"=>"895", "896"=>"896", "897"=>"897", "898"=>"898", "899"=>"899", "900"=>"900", "901"=>"901", "902"=>"902", "903"=>"903", "904"=>"904", "905"=>"905", "906"=>"906", "907"=>"907", "908"=>"908", "909"=>"909", "910"=>"910", "911"=>"911", "912"=>"912", "913"=>"913", "914"=>"914", "915"=>"915", "916"=>"916", "917"=>"917", "918"=>"918", "919"=>"919", "920"=>"920", "921"=>"921", "922"=>"922", "923"=>"923", "924"=>"924", "925"=>"925", "926"=>"926", "927"=>"927", "928"=>"928", "929"=>"929", "930"=>"930", "931"=>"931", "932"=>"932", "933"=>"933", "934"=>"934", "935"=>"935", "936"=>"936", "937"=>"937", "938"=>"938", "939"=>"939", "940"=>"940", "941"=>"941", "942"=>"942", "943"=>"943", "944"=>"944", "945"=>"945", "946"=>"946", "947"=>"947", "948"=>"948", "949"=>"949", "950"=>"950", "951"=>"951", "952"=>"952", "953"=>"953", "954"=>"954", "955"=>"955", "956"=>"956", "957"=>"957", "958"=>"958", "959"=>"959", "960"=>"960", "961"=>"961", "962"=>"962", "963"=>"963", "964"=>"964", "965"=>"965", "966"=>"966", "967"=>"967", "968"=>"968", "969"=>"969", "970"=>"970", "971"=>"971", "972"=>"972", "973"=>"973", "974"=>"974", "975"=>"975", "976"=>"976", "977"=>"977", "978"=>"978", "979"=>"979", "980"=>"980", "981"=>"981", "982"=>"982", "983"=>"983", "984"=>"984", "985"=>"985", "986"=>"986", "987"=>"987", "988"=>"988", "989"=>"989", "990"=>"990", "991"=>"991", "992"=>"992", "993"=>"993", "994"=>"994", "995"=>"995", "996"=>"996", "997"=>"997", "998"=>"998", "999"=>"999"}
+end
+
diff --git a/benchmark/bm_hash_literal_string_small.rb b/benchmark/bm_hash_literal_string_small.rb
new file mode 100644
index 00000000..4d0d0f9a
--- /dev/null
+++ b/benchmark/bm_hash_literal_string_small.rb
@@ -0,0 +1,3 @@
+100_000.times do
+  h = {'a' => 'b', 'c' => 'd', 'e' => 'f', 'g' => 'h', 'i' => 'j', 'k' => 'l', 'm' => 'n', 'o' => 'p'}
+end
diff --git a/benchmark/bm_hash_merge_object.rb b/benchmark/bm_hash_merge_object.rb
new file mode 100644
index 00000000..6b00b15a
--- /dev/null
+++ b/benchmark/bm_hash_merge_object.rb
@@ -0,0 +1,22 @@
+h1 = {}
+h2 = {}
+
+a = []
+
+1.upto(5_000) do |i|
+  a[i] = Object.new
+  h1[a[i]] = nil
+end
+
+2_501.upto(7_500) do |i|
+  a[i] = Object.new
+  h2[a[i]] = nil
+end
+
+500.times do
+  h1.merge!(h2)
+end
+
+500.times do
+  h2.merge!(h1){|k, v, v2| 42}
+end
diff --git a/benchmark/bm_hash_merge_string.rb b/benchmark/bm_hash_merge_string.rb
new file mode 100644
index 00000000..1d133f39
--- /dev/null
+++ b/benchmark/bm_hash_merge_string.rb
@@ -0,0 +1,18 @@
+h1 = {}
+h2 = {}
+
+1.upto(5_000) do |i|
+  h1[i.to_s] = nil
+end
+
+2_501.upto(7_500) do |i|
+  h2[i.to_s] = nil
+end
+
+500.times do
+  h1.merge!(h2)
+end
+
+500.times do
+  h2.merge!(h1){|k, v, v2| 42}
+end
diff --git a/benchmark/bm_hash_rassoc_object.rb b/benchmark/bm_hash_rassoc_object.rb
new file mode 100644
index 00000000..cbc92dd4
--- /dev/null
+++ b/benchmark/bm_hash_rassoc_object.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[Object.new] = i
+end
+
+1_000.times do |i|
+  k, v = h.rassoc(i)
+end
diff --git a/benchmark/bm_hash_rassoc_string.rb b/benchmark/bm_hash_rassoc_string.rb
new file mode 100644
index 00000000..12e854f0
--- /dev/null
+++ b/benchmark/bm_hash_rassoc_string.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[i.to_s] = i
+end
+
+1_000.times do |i|
+  k, v = h.rassoc(i)
+end
diff --git a/benchmark/bm_hash_rehash_object.rb b/benchmark/bm_hash_rehash_object.rb
new file mode 100644
index 00000000..dab1d1b5
--- /dev/null
+++ b/benchmark/bm_hash_rehash_object.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[Object.new] = nil
+end
+
+1_000.times do
+  h.rehash
+end
diff --git a/benchmark/bm_hash_rehash_string.rb b/benchmark/bm_hash_rehash_string.rb
new file mode 100644
index 00000000..acb386b6
--- /dev/null
+++ b/benchmark/bm_hash_rehash_string.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[i.to_s] = nil
+end
+
+1_000.times do
+  h.rehash
+end
diff --git a/benchmark/bm_hash_reject_bang_object.rb b/benchmark/bm_hash_reject_bang_object.rb
new file mode 100644
index 00000000..af9bab76
--- /dev/null
+++ b/benchmark/bm_hash_reject_bang_object.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[Object.new] = i
+end
+
+10_000.times do |i|
+  h.reject!{|k, v| v <= i}
+end
diff --git a/benchmark/bm_hash_reject_bang_string.rb b/benchmark/bm_hash_reject_bang_string.rb
new file mode 100644
index 00000000..e02920cd
--- /dev/null
+++ b/benchmark/bm_hash_reject_bang_string.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[i.to_s] = i
+end
+
+10_000.times do |i|
+  h.reject!{|k, v| v <= i}
+end
diff --git a/benchmark/bm_hash_reject_object.rb b/benchmark/bm_hash_reject_object.rb
new file mode 100644
index 00000000..cbccec52
--- /dev/null
+++ b/benchmark/bm_hash_reject_object.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[Object.new] = i
+end
+
+100.times do |i|
+  h.reject{|k, v| v % 2 == 0}
+end
diff --git a/benchmark/bm_hash_reject_string.rb b/benchmark/bm_hash_reject_string.rb
new file mode 100644
index 00000000..102590ef
--- /dev/null
+++ b/benchmark/bm_hash_reject_string.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[i.to_s] = i
+end
+
+100.times do |i|
+  h.reject{|k, v| v % 2 == 0}
+end
diff --git a/benchmark/bm_hash_replace_object.rb b/benchmark/bm_hash_replace_object.rb
new file mode 100644
index 00000000..45351f73
--- /dev/null
+++ b/benchmark/bm_hash_replace_object.rb
@@ -0,0 +1,18 @@
+h1 = {}
+h2 = {}
+
+a = []
+
+1.upto(5_000) do |i|
+  a[i] = Object.new
+  h1[a[i]] = nil
+end
+
+2_501.upto(7_500) do |i|
+  a[i] = Object.new
+  h2[a[i]] = nil
+end
+
+1_000.times do
+  h1.replace(h2)
+end
diff --git a/benchmark/bm_hash_replace_string.rb b/benchmark/bm_hash_replace_string.rb
new file mode 100644
index 00000000..2a8e6e13
--- /dev/null
+++ b/benchmark/bm_hash_replace_string.rb
@@ -0,0 +1,14 @@
+h1 = {}
+h2 = {}
+
+1.upto(5_000) do |i|
+  h1[i.to_s] = nil
+end
+
+2_501.upto(7_500) do |i|
+  h2[i.to_s] = nil
+end
+
+1_000.times do
+  h1.replace(h2)
+end
diff --git a/benchmark/bm_hash_select_bang_object.rb b/benchmark/bm_hash_select_bang_object.rb
new file mode 100644
index 00000000..45c50711
--- /dev/null
+++ b/benchmark/bm_hash_select_bang_object.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[Object.new] = i
+end
+
+10_000.times do |i|
+  h.select!{|k, v| v > i}
+end
diff --git a/benchmark/bm_hash_select_bang_string.rb b/benchmark/bm_hash_select_bang_string.rb
new file mode 100644
index 00000000..2092b8ba
--- /dev/null
+++ b/benchmark/bm_hash_select_bang_string.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[i.to_s] = i
+end
+
+10_000.times do |i|
+  h.select!{|k, v| v > i}
+end
diff --git a/benchmark/bm_hash_select_object.rb b/benchmark/bm_hash_select_object.rb
new file mode 100644
index 00000000..122aee14
--- /dev/null
+++ b/benchmark/bm_hash_select_object.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[Object.new] = i
+end
+
+100.times do |i|
+  h.select{|k, v| v % 2 == 0}
+end
diff --git a/benchmark/bm_hash_select_string.rb b/benchmark/bm_hash_select_string.rb
new file mode 100644
index 00000000..964ebb5c
--- /dev/null
+++ b/benchmark/bm_hash_select_string.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[i.to_s] = i
+end
+
+100.times do |i|
+  h.select{|k, v| v % 2 == 0}
+end
diff --git a/benchmark/bm_hash_shift_object.rb b/benchmark/bm_hash_shift_object.rb
new file mode 100644
index 00000000..cb5e3aff
--- /dev/null
+++ b/benchmark/bm_hash_shift_object.rb
@@ -0,0 +1,10 @@
+h = {}
+
+10_000.times do |i|
+  h[Object.new] = nil
+end
+
+1_000_000.times do
+  k, v = h.shift
+  h[k] = v
+end
diff --git a/benchmark/bm_hash_shift_string.rb b/benchmark/bm_hash_shift_string.rb
new file mode 100644
index 00000000..7ee5754e
--- /dev/null
+++ b/benchmark/bm_hash_shift_string.rb
@@ -0,0 +1,10 @@
+h = {}
+
+10_000.times do |i|
+  h[i.to_s] = nil
+end
+
+1_000_000.times do
+  k, v = h.shift
+  h[k] = v
+end
diff --git a/benchmark/bm_hash_to_a_object.rb b/benchmark/bm_hash_to_a_object.rb
new file mode 100644
index 00000000..5d607596
--- /dev/null
+++ b/benchmark/bm_hash_to_a_object.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[Object.new] = nil
+end
+
+5_000.times do
+  h.to_a
+end
diff --git a/benchmark/bm_hash_to_a_string.rb b/benchmark/bm_hash_to_a_string.rb
new file mode 100644
index 00000000..aba71311
--- /dev/null
+++ b/benchmark/bm_hash_to_a_string.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[i.to_s] = nil
+end
+
+5_000.times do
+  h.to_a
+end
diff --git a/benchmark/bm_hash_to_h_object.rb b/benchmark/bm_hash_to_h_object.rb
new file mode 100644
index 00000000..839a6b9e
--- /dev/null
+++ b/benchmark/bm_hash_to_h_object.rb
@@ -0,0 +1,10 @@
+class MyHash < Hash; end
+h = MyHash.new
+
+10_000.times do |i|
+  h[Object.new] = nil
+end
+
+1_000.times do
+  h.to_h
+end
diff --git a/benchmark/bm_hash_to_h_string.rb b/benchmark/bm_hash_to_h_string.rb
new file mode 100644
index 00000000..74df8d4f
--- /dev/null
+++ b/benchmark/bm_hash_to_h_string.rb
@@ -0,0 +1,10 @@
+class MyHash < Hash; end
+h = MyHash.new
+
+10_000.times do |i|
+  h[i.to_s] = nil
+end
+
+1_000.times do
+  h.to_h
+end
diff --git a/benchmark/bm_hash_values_object.rb b/benchmark/bm_hash_values_object.rb
new file mode 100644
index 00000000..47d16a87
--- /dev/null
+++ b/benchmark/bm_hash_values_object.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[Object.new] = nil
+end
+
+1_000.times do
+  h.values
+end
diff --git a/benchmark/bm_hash_values_string.rb b/benchmark/bm_hash_values_string.rb
new file mode 100644
index 00000000..507874c5
--- /dev/null
+++ b/benchmark/bm_hash_values_string.rb
@@ -0,0 +1,9 @@
+h = {}
+
+10_000.times do |i|
+  h[i.to_s] = nil
+end
+
+1_000.times do
+  h.values
+end
diff --git a/benchmark/bm_module_definition_big.rb b/benchmark/bm_module_definition_big.rb
new file mode 100644
index 00000000..6480cd22
--- /dev/null
+++ b/benchmark/bm_module_definition_big.rb
@@ -0,0 +1,400 @@
+module Scope0
+  module Scope1
+    module Scope2
+      module Scope3
+        module Scope4
+          module Scope5
+            module Scope6
+              module Scope7
+                module Scope8
+                  module Scope9
+                    module Scope10
+                      module Scope11
+                        module Scope12
+                          module Scope13
+                            module Scope14
+                              module Scope15
+                                module Scope16
+                                  module Scope17
+                                    module Scope18
+                                      module Scope19
+                                        module Scope20
+                                          module Scope21
+                                            module Scope22
+                                              module Scope23
+                                                module Scope24
+                                                  module Scope25
+                                                    module Scope26
+                                                      module Scope27
+                                                        module Scope28
+                                                          module Scope29
+                                                            module Scope30
+                                                              module Scope31
+                                                                module Scope32
+                                                                  module Scope33
+                                                                    module Scope34
+                                                                      module Scope35
+                                                                        module Scope36
+                                                                          module Scope37
+                                                                            module Scope38
+                                                                              module Scope39
+                                                                                module Scope40
+                                                                                  module Scope41
+                                                                                    module Scope42
+                                                                                      module Scope43
+                                                                                        module Scope44
+                                                                                          module Scope45
+                                                                                            module Scope46
+                                                                                              module Scope47
+                                                                                                module Scope48
+                                                                                                  module Scope49
+                                                                                                    module Scope50
+                                                                                                      module Scope51
+                                                                                                        module Scope52
+                                                                                                          module Scope53
+                                                                                                            module Scope54
+                                                                                                              module Scope55
+                                                                                                                module Scope56
+                                                                                                                  module Scope57
+                                                                                                                    module Scope58
+                                                                                                                      module Scope59
+                                                                                                                        module Scope60
+                                                                                                                          module Scope61
+                                                                                                                            module Scope62
+                                                                                                                              module Scope63
+                                                                                                                                module Scope64
+                                                                                                                                  module Scope65
+                                                                                                                                    module Scope66
+                                                                                                                                      module Scope67
+                                                                                                                                        module Scope68
+                                                                                                                                          module Scope69
+                                                                                                                                            module Scope70
+                                                                                                                                              module Scope71
+                                                                                                                                                module Scope72
+                                                                                                                                                  module Scope73
+                                                                                                                                                    module Scope74
+                                                                                                                                                      module Scope75
+                                                                                                                                                        module Scope76
+                                                                                                                                                          module Scope77
+                                                                                                                                                            module Scope78
+                                                                                                                                                              module Scope79
+                                                                                                                                                                module Scope80
+                                                                                                                                                                  module Scope81
+                                                                                                                                                                    module Scope82
+                                                                                                                                                                      module Scope83
+                                                                                                                                                                        module Scope84
+                                                                                                                                                                          module Scope85
+                                                                                                                                                                            module Scope86
+                                                                                                                                                                              module Scope87
+                                                                                                                                                                                module Scope88
+                                                                                                                                                                                  module Scope89
+                                                                                                                                                                                    module Scope90
+                                                                                                                                                                                      module Scope91
+                                                                                                                                                                                        module Scope92
+                                                                                                                                                                                          module Scope93
+                                                                                                                                                                                            module Scope94
+                                                                                                                                                                                              module Scope95
+                                                                                                                                                                                                module Scope96
+                                                                                                                                                                                                  module Scope97
+                                                                                                                                                                                                    module Scope98
+                                                                                                                                                                                                      module Scope99
+                                                                                                                                                                                                        module Scope100
+                                                                                                                                                                                                          module Scope101
+                                                                                                                                                                                                            module Scope102
+                                                                                                                                                                                                              module Scope103
+                                                                                                                                                                                                                module Scope104
+                                                                                                                                                                                                                  module Scope105
+                                                                                                                                                                                                                    module Scope106
+                                                                                                                                                                                                                      module Scope107
+                                                                                                                                                                                                                        module Scope108
+                                                                                                                                                                                                                          module Scope109
+                                                                                                                                                                                                                            module Scope110
+                                                                                                                                                                                                                              module Scope111
+                                                                                                                                                                                                                                module Scope112
+                                                                                                                                                                                                                                  module Scope113
+                                                                                                                                                                                                                                    module Scope114
+                                                                                                                                                                                                                                      module Scope115
+                                                                                                                                                                                                                                        module Scope116
+                                                                                                                                                                                                                                          module Scope117
+                                                                                                                                                                                                                                            module Scope118
+                                                                                                                                                                                                                                              module Scope119
+                                                                                                                                                                                                                                                module Scope120
+                                                                                                                                                                                                                                                  module Scope121
+                                                                                                                                                                                                                                                    module Scope122
+                                                                                                                                                                                                                                                      module Scope123
+                                                                                                                                                                                                                                                        module Scope124
+                                                                                                                                                                                                                                                          module Scope125
+                                                                                                                                                                                                                                                            module Scope126
+                                                                                                                                                                                                                                                              module Scope127
+                                                                                                                                                                                                                                                                module Scope128
+                                                                                                                                                                                                                                                                  module Scope129
+                                                                                                                                                                                                                                                                    module Scope130
+                                                                                                                                                                                                                                                                      module Scope131
+                                                                                                                                                                                                                                                                        module Scope132
+                                                                                                                                                                                                                                                                          module Scope133
+                                                                                                                                                                                                                                                                            module Scope134
+                                                                                                                                                                                                                                                                              module Scope135
+                                                                                                                                                                                                                                                                                module Scope136
+                                                                                                                                                                                                                                                                                  module Scope137
+                                                                                                                                                                                                                                                                                    module Scope138
+                                                                                                                                                                                                                                                                                      module Scope139
+                                                                                                                                                                                                                                                                                        module Scope140
+                                                                                                                                                                                                                                                                                          module Scope141
+                                                                                                                                                                                                                                                                                            module Scope142
+                                                                                                                                                                                                                                                                                              module Scope143
+                                                                                                                                                                                                                                                                                                module Scope144
+                                                                                                                                                                                                                                                                                                  module Scope145
+                                                                                                                                                                                                                                                                                                    module Scope146
+                                                                                                                                                                                                                                                                                                      module Scope147
+                                                                                                                                                                                                                                                                                                        module Scope148
+                                                                                                                                                                                                                                                                                                          module Scope149
+                                                                                                                                                                                                                                                                                                            module Scope150
+                                                                                                                                                                                                                                                                                                              module Scope151
+                                                                                                                                                                                                                                                                                                                module Scope152
+                                                                                                                                                                                                                                                                                                                  module Scope153
+                                                                                                                                                                                                                                                                                                                    module Scope154
+                                                                                                                                                                                                                                                                                                                      module Scope155
+                                                                                                                                                                                                                                                                                                                        module Scope156
+                                                                                                                                                                                                                                                                                                                          module Scope157
+                                                                                                                                                                                                                                                                                                                            module Scope158
+                                                                                                                                                                                                                                                                                                                              module Scope159
+                                                                                                                                                                                                                                                                                                                                module Scope160
+                                                                                                                                                                                                                                                                                                                                  module Scope161
+                                                                                                                                                                                                                                                                                                                                    module Scope162
+                                                                                                                                                                                                                                                                                                                                      module Scope163
+                                                                                                                                                                                                                                                                                                                                        module Scope164
+                                                                                                                                                                                                                                                                                                                                          module Scope165
+                                                                                                                                                                                                                                                                                                                                            module Scope166
+                                                                                                                                                                                                                                                                                                                                              module Scope167
+                                                                                                                                                                                                                                                                                                                                                module Scope168
+                                                                                                                                                                                                                                                                                                                                                  module Scope169
+                                                                                                                                                                                                                                                                                                                                                    module Scope170
+                                                                                                                                                                                                                                                                                                                                                      module Scope171
+                                                                                                                                                                                                                                                                                                                                                        module Scope172
+                                                                                                                                                                                                                                                                                                                                                          module Scope173
+                                                                                                                                                                                                                                                                                                                                                            module Scope174
+                                                                                                                                                                                                                                                                                                                                                              module Scope175
+                                                                                                                                                                                                                                                                                                                                                                module Scope176
+                                                                                                                                                                                                                                                                                                                                                                  module Scope177
+                                                                                                                                                                                                                                                                                                                                                                    module Scope178
+                                                                                                                                                                                                                                                                                                                                                                      module Scope179
+                                                                                                                                                                                                                                                                                                                                                                        module Scope180
+                                                                                                                                                                                                                                                                                                                                                                          module Scope181
+                                                                                                                                                                                                                                                                                                                                                                            module Scope182
+                                                                                                                                                                                                                                                                                                                                                                              module Scope183
+                                                                                                                                                                                                                                                                                                                                                                                module Scope184
+                                                                                                                                                                                                                                                                                                                                                                                  module Scope185
+                                                                                                                                                                                                                                                                                                                                                                                    module Scope186
+                                                                                                                                                                                                                                                                                                                                                                                      module Scope187
+                                                                                                                                                                                                                                                                                                                                                                                        module Scope188
+                                                                                                                                                                                                                                                                                                                                                                                          module Scope189
+                                                                                                                                                                                                                                                                                                                                                                                            module Scope190
+                                                                                                                                                                                                                                                                                                                                                                                              module Scope191
+                                                                                                                                                                                                                                                                                                                                                                                                module Scope192
+                                                                                                                                                                                                                                                                                                                                                                                                  module Scope193
+                                                                                                                                                                                                                                                                                                                                                                                                    module Scope194
+                                                                                                                                                                                                                                                                                                                                                                                                      module Scope195
+                                                                                                                                                                                                                                                                                                                                                                                                        module Scope196
+                                                                                                                                                                                                                                                                                                                                                                                                          module Scope197
+                                                                                                                                                                                                                                                                                                                                                                                                            module Scope198
+                                                                                                                                                                                                                                                                                                                                                                                                              module Scope199
+                                                                                                                                                                                                                                                                                                                                                                                                              end
+                                                                                                                                                                                                                                                                                                                                                                                                            end
+                                                                                                                                                                                                                                                                                                                                                                                                          end
+                                                                                                                                                                                                                                                                                                                                                                                                        end
+                                                                                                                                                                                                                                                                                                                                                                                                      end
+                                                                                                                                                                                                                                                                                                                                                                                                    end
+                                                                                                                                                                                                                                                                                                                                                                                                  end
+                                                                                                                                                                                                                                                                                                                                                                                                end
+                                                                                                                                                                                                                                                                                                                                                                                              end
+                                                                                                                                                                                                                                                                                                                                                                                            end
+                                                                                                                                                                                                                                                                                                                                                                                          end
+                                                                                                                                                                                                                                                                                                                                                                                        end
+                                                                                                                                                                                                                                                                                                                                                                                      end
+                                                                                                                                                                                                                                                                                                                                                                                    end
+                                                                                                                                                                                                                                                                                                                                                                                  end
+                                                                                                                                                                                                                                                                                                                                                                                end
+                                                                                                                                                                                                                                                                                                                                                                              end
+                                                                                                                                                                                                                                                                                                                                                                            end
+                                                                                                                                                                                                                                                                                                                                                                          end
+                                                                                                                                                                                                                                                                                                                                                                        end
+                                                                                                                                                                                                                                                                                                                                                                      end
+                                                                                                                                                                                                                                                                                                                                                                    end
+                                                                                                                                                                                                                                                                                                                                                                  end
+                                                                                                                                                                                                                                                                                                                                                                end
+                                                                                                                                                                                                                                                                                                                                                              end
+                                                                                                                                                                                                                                                                                                                                                            end
+                                                                                                                                                                                                                                                                                                                                                          end
+                                                                                                                                                                                                                                                                                                                                                        end
+                                                                                                                                                                                                                                                                                                                                                      end
+                                                                                                                                                                                                                                                                                                                                                    end
+                                                                                                                                                                                                                                                                                                                                                  end
+                                                                                                                                                                                                                                                                                                                                                end
+                                                                                                                                                                                                                                                                                                                                              end
+                                                                                                                                                                                                                                                                                                                                            end
+                                                                                                                                                                                                                                                                                                                                          end
+                                                                                                                                                                                                                                                                                                                                        end
+                                                                                                                                                                                                                                                                                                                                      end
+                                                                                                                                                                                                                                                                                                                                    end
+                                                                                                                                                                                                                                                                                                                                  end
+                                                                                                                                                                                                                                                                                                                                end
+                                                                                                                                                                                                                                                                                                                              end
+                                                                                                                                                                                                                                                                                                                            end
+                                                                                                                                                                                                                                                                                                                          end
+                                                                                                                                                                                                                                                                                                                        end
+                                                                                                                                                                                                                                                                                                                      end
+                                                                                                                                                                                                                                                                                                                    end
+                                                                                                                                                                                                                                                                                                                  end
+                                                                                                                                                                                                                                                                                                                end
+                                                                                                                                                                                                                                                                                                              end
+                                                                                                                                                                                                                                                                                                            end
+                                                                                                                                                                                                                                                                                                          end
+                                                                                                                                                                                                                                                                                                        end
+                                                                                                                                                                                                                                                                                                      end
+                                                                                                                                                                                                                                                                                                    end
+                                                                                                                                                                                                                                                                                                  end
+                                                                                                                                                                                                                                                                                                end
+                                                                                                                                                                                                                                                                                              end
+                                                                                                                                                                                                                                                                                            end
+                                                                                                                                                                                                                                                                                          end
+                                                                                                                                                                                                                                                                                        end
+                                                                                                                                                                                                                                                                                      end
+                                                                                                                                                                                                                                                                                    end
+                                                                                                                                                                                                                                                                                  end
+                                                                                                                                                                                                                                                                                end
+                                                                                                                                                                                                                                                                              end
+                                                                                                                                                                                                                                                                            end
+                                                                                                                                                                                                                                                                          end
+                                                                                                                                                                                                                                                                        end
+                                                                                                                                                                                                                                                                      end
+                                                                                                                                                                                                                                                                    end
+                                                                                                                                                                                                                                                                  end
+                                                                                                                                                                                                                                                                end
+                                                                                                                                                                                                                                                              end
+                                                                                                                                                                                                                                                            end
+                                                                                                                                                                                                                                                          end
+                                                                                                                                                                                                                                                        end
+                                                                                                                                                                                                                                                      end
+                                                                                                                                                                                                                                                    end
+                                                                                                                                                                                                                                                  end
+                                                                                                                                                                                                                                                end
+                                                                                                                                                                                                                                              end
+                                                                                                                                                                                                                                            end
+                                                                                                                                                                                                                                          end
+                                                                                                                                                                                                                                        end
+                                                                                                                                                                                                                                      end
+                                                                                                                                                                                                                                    end
+                                                                                                                                                                                                                                  end
+                                                                                                                                                                                                                                end
+                                                                                                                                                                                                                              end
+                                                                                                                                                                                                                            end
+                                                                                                                                                                                                                          end
+                                                                                                                                                                                                                        end
+                                                                                                                                                                                                                      end
+                                                                                                                                                                                                                    end
+                                                                                                                                                                                                                  end
+                                                                                                                                                                                                                end
+                                                                                                                                                                                                              end
+                                                                                                                                                                                                            end
+                                                                                                                                                                                                          end
+                                                                                                                                                                                                        end
+                                                                                                                                                                                                      end
+                                                                                                                                                                                                    end
+                                                                                                                                                                                                  end
+                                                                                                                                                                                                end
+                                                                                                                                                                                              end
+                                                                                                                                                                                            end
+                                                                                                                                                                                          end
+                                                                                                                                                                                        end
+                                                                                                                                                                                      end
+                                                                                                                                                                                    end
+                                                                                                                                                                                  end
+                                                                                                                                                                                end
+                                                                                                                                                                              end
+                                                                                                                                                                            end
+                                                                                                                                                                          end
+                                                                                                                                                                        end
+                                                                                                                                                                      end
+                                                                                                                                                                    end
+                                                                                                                                                                  end
+                                                                                                                                                                end
+                                                                                                                                                              end
+                                                                                                                                                            end
+                                                                                                                                                          end
+                                                                                                                                                        end
+                                                                                                                                                      end
+                                                                                                                                                    end
+                                                                                                                                                  end
+                                                                                                                                                end
+                                                                                                                                              end
+                                                                                                                                            end
+                                                                                                                                          end
+                                                                                                                                        end
+                                                                                                                                      end
+                                                                                                                                    end
+                                                                                                                                  end
+                                                                                                                                end
+                                                                                                                              end
+                                                                                                                            end
+                                                                                                                          end
+                                                                                                                        end
+                                                                                                                      end
+                                                                                                                    end
+                                                                                                                  end
+                                                                                                                end
+                                                                                                              end
+                                                                                                            end
+                                                                                                          end
+                                                                                                        end
+                                                                                                      end
+                                                                                                    end
+                                                                                                  end
+                                                                                                end
+                                                                                              end
+                                                                                            end
+                                                                                          end
+                                                                                        end
+                                                                                      end
+                                                                                    end
+                                                                                  end
+                                                                                end
+                                                                              end
+                                                                            end
+                                                                          end
+                                                                        end
+                                                                      end
+                                                                    end
+                                                                  end
+                                                                end
+                                                              end
+                                                            end
+                                                          end
+                                                        end
+                                                      end
+                                                    end
+                                                  end
+                                                end
+                                              end
+                                            end
+                                          end
+                                        end
+                                      end
+                                    end
+                                  end
+                                end
+                              end
+                            end
+                          end
+                        end
+                      end
+                    end
+                  end
+                end
+              end
+            end
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/benchmark/bm_module_definition_small.rb b/benchmark/bm_module_definition_small.rb
new file mode 100644
index 00000000..c6b0b61c
--- /dev/null
+++ b/benchmark/bm_module_definition_small.rb
@@ -0,0 +1,30 @@
+module Scope0
+  module Scope1
+    module Scope2
+      module Scope3
+        module Scope4
+          module Scope5
+            module Scope6
+              module Scope7
+                module Scope8
+                  module Scope9
+                    module Scope10
+                      module Scope11
+                        module Scope12
+                          module Scope13
+                            module Scope14
+                            end
+                          end
+                        end
+                      end
+                    end
+                  end
+                end
+              end
+            end
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/benchmark/run.rb b/benchmark/run.rb
new file mode 100644
index 00000000..b5b07edd
--- /dev/null
+++ b/benchmark/run.rb
@@ -0,0 +1,55 @@
+if RUBY_ENGINE == 'opal'
+  require 'opal/compiler'
+  require 'nodejs'
+end
+
+BEST_OF_N = Integer(ENV['BEST_OF_N']) rescue 1
+
+require 'benchmark'
+
+files = ARGV
+
+if files.empty?
+  files = File.read('benchmark/benchmarks').lines.map(&:strip).reject do |line|
+    line.empty? || line.start_with?('#')
+  end
+end
+
+files = files.shuffle
+
+maxlen = files.max_by{|file| file.length}.length + 1
+
+total_time = 0
+
+files.each do |file|
+  print file, " " * (maxlen - file.length)
+
+  times = []
+
+  if RUBY_ENGINE == 'opal'
+    code = File.read(file)
+    code = "Benchmark.measure { #{code} }"
+    code = Opal.compile(code, file: file)
+
+    BEST_OF_N.times do
+      times << `eval(code)`
+    end
+  else
+    code = File.read(file)
+    code = "Benchmark.measure { #{code} }"
+
+    BEST_OF_N.times do
+      times << eval(code)
+    end
+  end
+
+  time = times.min_by{|t| t.real}
+
+  total_time += time.real
+
+  print time.real, "\n"
+end
+
+bottom_line = "Executed #{ files.length } benchmark#{ 's' if files.length != 1} in #{ total_time } sec"
+$stderr.print "=" * bottom_line.length, "\n"
+$stderr.print bottom_line, "\n"
diff --git a/bin/build b/bin/build
index b31df2db..b31bae95 100755
--- a/bin/build
+++ b/bin/build
@@ -25,6 +25,8 @@ end
 
 ENV['GIT_DIR'] = opal.join('.git').to_s
 git :fetch, '--all', '--prune'
+git :checkout, 'master'
+git :reset, '--hard', 'origin/master'
 
 ENV['GIT_DIR'] = nil
 opal_version = root.join("tmp/#{version}")
@@ -64,5 +66,7 @@ system "#{__dir__}/set-current", current
 git 'add', '.'
 git 'commit', '-a', '-m', version
 git 'push'
-git 'tag', version
-git 'push', '--tags'
+unless version == 'master'
+  git 'tag', version
+  git 'push', '--tags'
+end
diff --git a/bin/build-browser-source-map-support b/bin/build-browser-source-map-support
new file mode 100755
index 00000000..f0e6674a
--- /dev/null
+++ b/bin/build-browser-source-map-support
@@ -0,0 +1,4 @@
+#!/usr/bin/env bash
+
+yarn -s browserify -r ./lib/opal/cli_runners/source-map-support.js -o ./lib/opal/cli_runners/source-map-support-browser.js -s sourceMapSupport
+yarn -s browserify -r ./lib/opal/cli_runners/source-map-support.js -o ./lib/opal/cli_runners/source-map-support-node.js --bare -s sourceMapSupport
diff --git a/bin/console b/bin/console
new file mode 100755
index 00000000..ed1a3db3
--- /dev/null
+++ b/bin/console
@@ -0,0 +1,14 @@
+#!/usr/bin/env ruby
+
+require "bundler/setup"
+require "opal"
+
+# You can add fixtures and/or initialization code here to make experimenting
+# with your gem easier. You can also use a different console, if you like.
+
+# (If you use this, don't forget to add pry to your Gemfile!)
+# require "pry"
+# Pry.start
+
+require "irb"
+IRB.start(__FILE__)
diff --git a/bin/format-filters b/bin/format-filters
new file mode 100755
index 00000000..46ffc92b
--- /dev/null
+++ b/bin/format-filters
@@ -0,0 +1,54 @@
+#!/usr/bin/env ruby
+
+sort_lines = -> lines {
+  lines.sort.uniq { |l| l.split('" # ', 2).first }
+}
+
+write_group = ->(title:, lines:, type:) {
+  %{#{type} "#{title}" do\n}+
+  sort_lines[lines].join+
+  %{end\n}
+}
+
+write_groups = -> groups {
+  %{# NOTE: run bin/format-filters after changing this file\n}+
+  groups.map.with_index do |group, index|
+    puts "- #{group[:type]} #{group[:title].inspect}..."
+    ("\n" if index > 0).to_s + write_group.call(**group)
+  end.join
+}
+
+group_lines = -> lines {
+  groups = []
+  group = nil
+  lines.each do |line|
+    case line
+    when /^(opal_(?:unsupported_)?filter) *"([^"]+)" *do *\n/
+      raise "bad group for #{line.inspect}!" if group
+
+      group = {
+        type: $1,
+        title: $2,
+        lines: []
+      }
+
+    when /^  fails/
+      group[:lines] << line
+
+    when /^end/
+      groups << group
+      group = nil
+    end
+  end
+  groups
+}
+
+format_filter = -> path {
+  File.write path, write_groups[group_lines[File.read(path).lines]]
+}
+
+Dir['spec/filters/**/*.rb'].each do |path|
+  puts
+  puts "Formatting #{path} ..."
+  format_filter[path]
+end
diff --git a/bin/git-submodule-fast-install b/bin/git-submodule-fast-install
new file mode 100755
index 00000000..24660cb5
--- /dev/null
+++ b/bin/git-submodule-fast-install
@@ -0,0 +1,49 @@
+#!/usr/bin/env ruby
+
+def system(*args)
+  puts "== command: #{args.inspect}"
+  super
+end
+
+def system!(*args)
+  system(*args) or raise "== command failed: #{args.inspect}"
+end
+
+
+Dir.chdir "#{__dir__}/.."
+Dir.mkdir 'tmp' unless File.directory? 'tmp'
+
+system 'git submodule --quiet deinit --all -f 2> /dev/null'
+
+modules = {}
+`git config -f #{__dir__}/../.gitmodules --list`.lines.each do |line|
+  fullkey, value = line.split('=', 2)
+  _, name, key = fullkey.split('.', 3)
+  modules[name] ||= {}
+  modules[name][key.to_sym] = value.strip
+end
+
+`git submodule`.lines.each do |line|
+  sha1, name = line[1..-1].scan(/^(?<sha1>\w+) (?<name>\S+)/).first
+  modules[name][:sha1] = sha1
+end
+
+modules.map do |name, config|
+  puts "== installing #{name}..."
+  url, sha1, path = config.values_at(:url, :sha1, :path)
+  dir = File.dirname(path)
+  url.sub!(/\.git$/, '')
+
+  Thread.new do
+    system! "curl -L #{url}/archive/#{sha1}.zip -o #{sha1}.zip"
+
+    system! "unzip -q #{sha1}.zip -d #{dir}"
+    system! "rm #{sha1}.zip"
+
+    system! "rm -rf #{path}" if File.directory? path
+    system! "mv #{dir}/*-#{sha1} #{path}"
+    print "== completed installing #{name}.\n"
+  end
+end.each(&:join)
+
+system! 'git submodule init'
diff --git a/bin/opal b/bin/opal
new file mode 100755
index 00000000..ce754abf
--- /dev/null
+++ b/bin/opal
@@ -0,0 +1,4 @@
+#!/usr/bin/env ruby
+
+require 'bundler/setup'
+load "#{__dir__}/../exe/opal"
diff --git a/bin/opal-benchmark-ips b/bin/opal-benchmark-ips
new file mode 100755
index 00000000..339ba6b7
--- /dev/null
+++ b/bin/opal-benchmark-ips
@@ -0,0 +1,8 @@
+#!/usr/bin/env ruby
+
+file = ARGV.shift
+if ARGV.any?
+  warn "usage example:\n\n  #{$0} benchmark-ips/bm_case.rb\n"
+  exit 1
+end
+exec 'bundle', 'exec', 'rake', 'bench:ips', "FILE=#{file}"
diff --git a/bin/opal-mspec b/bin/opal-mspec
new file mode 100755
index 00000000..fc2c271c
--- /dev/null
+++ b/bin/opal-mspec
@@ -0,0 +1,11 @@
+#!/usr/bin/env ruby
+
+require 'bundler/setup'
+
+specs = ARGV.map do |s|
+  s.end_with?('.rb') ? s : "#{s}/**/*_spec.rb"
+end
+
+env = {}
+env['PATTERN'] = "{#{specs.join(',')}}" if specs.any?
+exec env, 'rake', 'mspec'
diff --git a/bin/opal-repl b/bin/opal-repl
new file mode 100755
index 00000000..d6724ad3
--- /dev/null
+++ b/bin/opal-repl
@@ -0,0 +1,3 @@
+#!/usr/bin/env ruby
+
+exec "#{__dir__}/opal", '--repl', *ARGV
diff --git a/bin/rake b/bin/rake
new file mode 100755
index 00000000..1e6eacd3
--- /dev/null
+++ b/bin/rake
@@ -0,0 +1,7 @@
+#!/usr/bin/env ruby
+# frozen_string_literal: true
+
+require "rubygems"
+require "bundler/setup"
+
+load Gem.bin_path("rake", "rake")
diff --git a/bin/remove-filters b/bin/remove-filters
new file mode 100755
index 00000000..647c9688
--- /dev/null
+++ b/bin/remove-filters
@@ -0,0 +1,36 @@
+#!/usr/bin/env ruby
+# This is an utility to automatically remove a group of filters provided
+# to its standard input.
+#
+# This utility is to assist with removing a large group of filters spread
+# around multiple files that is being output by a command:
+#
+# rake mspec_ruby_nodejs RUBYSPECS=true INVERT_RUNNING_MODE=true
+#
+# It expects an input of format:
+#  1) "Set#filter! returns an Enumerator when passed no block"
+#  2) "Set#filter! yields every element of self"
+#  3) "Set#filter! keeps every element from self for which the passed block returns true"
+#  4) "Set#filter! returns self when self was modified"
+#  5) "Set#filter! returns nil when self was not modified"
+
+filters = $stdin.read.split("\n").map do |i|
+  i.scan(/(?:\d+\)|fails) (".*")/).first.first
+end.compact
+filters = Regexp.union(*filters)
+
+remove_filters = -> path {
+  file = File.read(path).split("\n")
+
+  remove, good = file.partition { |i| i =~ filters }
+
+  if remove.length > 0
+    puts "Removing #{remove.length} filters from #{path}"
+
+    File.write(path, good.join("\n")+"\n")
+  end
+}
+
+Dir['spec/filters/**/*.rb'].each do |path|
+  remove_filters[path]
+end
diff --git a/bin/setup b/bin/setup
new file mode 100755
index 00000000..e8276910
--- /dev/null
+++ b/bin/setup
@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+set -euo pipefail
+IFS=$'\n\t'
+set -vx
+
+gem install bundler --conservative
+
+bundle update
+
+git submodule update --init
+
+bin/yarn install
diff --git a/bin/yarn b/bin/yarn
new file mode 100755
index 00000000..460dd565
--- /dev/null
+++ b/bin/yarn
@@ -0,0 +1,11 @@
+#!/usr/bin/env ruby
+APP_ROOT = File.expand_path('..', __dir__)
+Dir.chdir(APP_ROOT) do
+  begin
+    exec "yarnpkg", *ARGV
+  rescue Errno::ENOENT
+    $stderr.puts "Yarn executable was not detected in the system."
+    $stderr.puts "Download Yarn at https://yarnpkg.com/en/docs/install"
+    exit 1
+  end
+end
diff --git a/config.ru b/config.ru
new file mode 100644
index 00000000..c12407b4
--- /dev/null
+++ b/config.ru
@@ -0,0 +1,14 @@
+require 'bundler'
+Bundler.require
+
+require 'mspec/opal/rake_task'
+
+::Opal::Config.arity_check_enabled = true
+::Opal::Config.dynamic_require_severity = :error
+
+use Rack::ShowExceptions
+use Rack::ShowStatus
+use MSpec::Opal::Index
+run MSpec::Opal::Environment.new
+
+
diff --git a/docs/async.md b/docs/async.md
new file mode 100644
index 00000000..8425a485
--- /dev/null
+++ b/docs/async.md
@@ -0,0 +1,109 @@
+# Asynchronous code (PromiseV2 / async / await)
+
+Please be aware that this functionality is marked as experimental and may change
+in the future.
+
+In order to disable the warnings that will be shown if you use those experimental
+features, add the following line before requiring `promise/v2` or `await` and after
+requiring `opal`.
+
+```ruby
+`Opal.config.experimental_features_severity = 'ignore'`
+```
+
+## PromiseV2
+
+In Opal 1.2 we introduced PromiseV2 which is to replace the default Promise in Opal 2.0
+(which will become PromiseV1). Right now it's experimental, but the interface of PromiseV1
+stay unchanged and will continue to be supported.
+
+It is imperative that during the transition period you either `require 'promise/v1'` or
+`require 'promise/v2'` and then use either `PromiseV1` or `PromiseV2`.
+
+If you write library code it's imperative that you don't require the promise itself, but
+detect if `PromiseV2` is defined and use the newer implementation, for instance using the
+following code:
+
+```ruby
+module MyLibrary
+  Promise = defined?(PromiseV2) ? PromiseV2 : ::Promise
+end
+```
+
+The difference between `PromiseV1` and `PromiseV2` is that `PromiseV1` is a pure-Ruby
+implementation of a Promise, while `PromiseV2` is reusing the JavaScript `Promise`. Both are
+incompatible with each other, but `PromiseV2` can be awaited (see below) and they translate
+1 to 1 to the JavaScript native `Promise` (they are bridged; you can directly return a
+`Promise` from JavaScript API without a need to translate it). The other difference is that
+`PromiseV2` always runs a `#then` block a tick later, while `PromiseV1` would could run it
+instantaneously.
+
+## Async/await
+
+In Opal 1.3 we implemented the CoffeeScript pattern of async/await. As of now, it's hidden
+behind a magic comment, but this behavior may change in the future.
+
+Example:
+
+```ruby
+# await: true
+
+require "await"
+
+def wait_5_seconds
+  puts "Let's wait 5 seconds..."
+  sleep(5).await
+  puts "Done!"
+end
+
+wait_5_seconds.__await__
+```
+
+It's important to understand what happens under the hood: every scope in which `#__await__` is
+encountered will become async, which means that it will return a Promise that will resolve
+to a value. This includes methods, blocks and the top scope. This means, that `#__await__` is
+infectious and you need to remember to `#__await__` everything along the way, otherwise
+a program will finish too early and the values may be incorrect.
+
+[You can take a look at how we ported Minitest to support asynchronous tests.](https://github.com/opal/opal/pull/2221/commits/8383c7b45a94fe4628778f429508b9c08c8948b0) Take note, that
+it was ported to use `#await` while the finally accepted version uses `#__await__`.
+
+It is certainly correct to `#__await__` any value, including non-Promises, for instance
+`5.__await__` will correctly resolve to `5` (except that it will make the scope an async
+function, with all the limitations described above).
+
+The `await` stdlib module includes a few useful functions, like async-aware `each_await`
+function and `sleep` that doesn't block the thread. It also includes a method `#await`
+which is an alias of `#itself` - it makes sense to auto-await that method.
+
+This approach is certainly incompatible with what Ruby does, but due to a dynamic nature
+of Ruby and a different model of JavaScript this was the least invasive way to catch up
+with the latest JavaScript trends and support `Promise` heavy APIs and asynchronous code.
+
+## Auto-await
+
+The magic comment also accepts a comma-separated list of methods to be automatically
+awaited. An individual value can contain a wildcard character `*`. For instance,
+those two blocks of code are equivalent:
+
+```ruby
+# await: true
+
+require "await"
+
+[1,2,3].each_await do |i|
+  p i
+  sleep(i).__await__
+end.__await__
+```
+
+```ruby
+# await: sleep, *await*
+
+require "await"
+
+[1,2,3].each_await do |i|
+  p i
+  sleep i
+end
+```
\ No newline at end of file
diff --git a/docs/compiled_ruby.md b/docs/compiled_ruby.md
new file mode 100644
index 00000000..4ba8d5c7
--- /dev/null
+++ b/docs/compiled_ruby.md
@@ -0,0 +1,681 @@
+# Compiled Ruby Code
+
+## Generated JavaScript
+
+Opal is a source-to-source compiler, so there is no VM as such and the
+compiled code aims to be as fast and efficient as possible, mapping
+directly to underlying javascript features and objects where possible.
+
+### Literals
+
+```ruby
+nil         # => nil
+true        # => true
+false       # => false
+self        # => self
+```
+
+**self** is mostly compiled to `this`. Methods and blocks are implemented
+as javascript functions, so their `this` value will be the right
+`self` value. Class bodies and the top level scope use a `self` variable
+to improve readability.
+
+**nil** is compiled to a `nil` javascript variable. `nil` is a real object
+which allows methods to be called on it. Opal cannot send methods to `null`
+or `undefined`, and they are considered bad values to be inside ruby code.
+
+**true** and **false** are compiled directly into their native boolean
+equivalents. This makes interaction a lot easier as there is no need
+to convert values to opal specific values.
+
+NOTE: Because `true` and `false` compile to their native
+javascript equivalents, they must share the same class: `Boolean`.
+Thru some level of hackery, we make them pseudo-members of the appropriate
+`TrueClass` and `FalseClass`.
+
+#### Strings & Symbols
+
+```ruby
+"hello world!"    # => "hello world!"
+:foo              # => "foo"
+<<-EOS            # => "Hello there.\n"
+Hello there.
+EOS
+```
+
+Ruby strings are compiled directly into JavaScript strings for
+performance as well as readability. This has the side effect that Opal
+does not support mutable strings - i.e. all strings are immutable.
+
+NOTE: Strings in Opal are immutable because they are compiled into regular JavaScript strings. This is done for performance reasons.
+
+For performance reasons, symbols are also compiled directly into strings.
+Opal supports all the symbol syntaxes, but does not have a real `Symbol`
+class. Symbols and Strings can therefore be used interchangeably.
+
+#### Numbers
+
+In Opal there is a single class for numbers; `Number`. To keep Opal
+as performant as possible, Ruby numbers are mapped to native numbers.
+This has the side effect that all numbers must be of the same class.
+Most relevant methods from `Integer` and `Float` are implemented on
+this class.
+
+```ruby
+42        # => 42
+3.142     # => 3.142
+```
+
+#### Arrays
+
+Ruby arrays are compiled directly into JavaScript arrays. Special
+Ruby syntaxes for word arrays etc are also supported.
+
+```ruby
+[1, 2, 3, 4]        # => [1, 2, 3, 4]
+%w[foo bar baz]     # => ["foo", "bar", "baz"]
+```
+
+#### Hash
+
+Inside a generated Ruby script, a function `Opal.hash` is available which
+creates a new hash. This is also available in JavaScript as `Opal.hash`
+and simply returns a new instance of the `Hash` class.
+
+```ruby
+{ :foo => 100, :baz => 700 }    # => Opal.hash("foo", 100, "baz", 700)
+{ foo: 42, bar: [1, 2, 3] }     # => Opal.hash("foo", 42, "bar", [1, 2, 3])
+```
+
+#### Range
+
+Similar to hash, there is a function `Opal.range` available to create
+range instances.
+
+```ruby
+1..4        # => Opal.range(1, 4, true)
+3...7       # => Opal.range(3, 7, false)
+```
+
+### Logic and conditionals
+
+As per Ruby, Opal treats only `false` and `nil` as falsy, everything
+else is a truthy value including `""`, `0` and `[]`. This differs from
+JavaScript as these values are also treated as false.
+
+For this reason, most truthy tests must check if values are `false` or
+`nil` (we also check for `null` and `undefined`).
+
+Taking the following test:
+
+```ruby
+val = 42
+
+if val
+  return 3.142;
+end
+```
+
+This would be compiled into:
+
+```javascript
+val = 42;
+if (val !== false && val !== nil && val != null) {
+  return 3.142
+} else {
+  return nil
+};
+```
+
+This makes the generated truthy tests (`if` statements, `and` checks and
+`or` statements) a little more verbose in the generated code.
+
+### Instance variables
+
+Instance variables in Opal work just as expected. When ivars are set or
+retrieved on an object, they are set natively without the `@` prefix.
+This allows real JavaScript identifiers to be used which is more
+efficient then accessing variables by string name.
+
+```ruby
+@foo = 200
+@foo  # => 200
+
+@bar  # => nil
+```
+
+This gets compiled into:
+
+```javascript
+this.foo = 200;
+this.foo;   // => 200
+
+this.bar;   // => nil
+```
+
+NOTE: If an instance variable uses the same name as a reserved JavaScript keyword,
+then the instance variable is wrapped using the object-key notation: `this['class']`.
+
+## Compiled Files
+
+As described above, a compiled Ruby source gets generated into a string
+of JavaScript code that is wrapped inside an anonymous function. This
+looks similar to the following:
+
+```javascript
+(function(Opal) {
+  // some setup code code
+  return self.$puts("foo")
+})(Opal);
+```
+
+As a complete example, assuming the following code:
+
+```ruby
+puts "foo"
+```
+
+This would compile directly into:
+
+```javascript
+Opal.queue(function(Opal) {
+  var self = Opal.top, nil = Opal.nil;
+
+  Opal.add_stubs('puts');
+  return self.$puts("foo")
+});
+```
+
+**TIP:**
+
+you can see the compiled code with this command: `opal --compile --no-exit --no-opal --eval 'puts "foo"'`
+or, more briefly: `opal -cEO -e 'puts "foo"'`
+
+
+### Using compiled sources
+
+If you write the generated code as above into a file `app.js` and add
+that to your HTML page, then it is obvious that `"foo"` would be
+written to the browser's console.
+
+### Debugging and finding errors
+
+Because Opal does not aim to be fully compatible with Ruby, there are
+some instances where things can break and it may not be entirely
+obvious what went wrong.
+
+### Using JavaScript debuggers
+
+As Opal just generates JavaScript, it is useful to use a native
+debugger to work through JavaScript code. To use a debugger, simply
+add a `debugger` statement:
+
+```ruby
+# .. code
+debugger
+# .. more code
+```
+
+The `debugger` statement is compiled to become a JavaScript `debugger`
+statement. This statement breaks the code if you have your Inspector open.
+
+NOTE: All local variables and method/block arguments also keep their Ruby
+names except in the rare cases when the name is reserved in JavaScript.
+In these cases, a `$` suffix is added to the name
+(e.g. `try` → `try$`).
+
+
+## JavaScript from Ruby
+
+Opal tries to interact as cleanly with JavaScript and its api as much
+as possible. Ruby arrays, strings, numbers, regexps, blocks and booleans
+are just JavaScript native equivalents. The only boxed core features are
+hashes.
+
+
+### Inline JavaScript
+
+As most of the corelib deals with these low level details, Opal provides
+a special syntax for inlining JavaScript code. This is done with
+x-strings or "backticks", as their Ruby use has no useful translation
+in the browser.
+
+```ruby
+`window.title`
+# => "Opal: Ruby to JavaScript compiler"
+
+%x{
+  console.log("opal version is:");
+  console.log(#{ RUBY_ENGINE_VERSION });
+}
+
+# => opal version is:
+# => 1.3.1
+```
+
+Even interpolations are supported, as seen here.
+
+This feature of inlining code is used extensively, for example in
+Array#length:
+
+```ruby
+class Array
+  def length
+    `this.length`
+  end
+end
+```
+
+X-Strings also have the ability to automatically return their value,
+as used by this example.
+
+
+### Native Module
+
+_Reposted from: [Mikamayhem](http://dev.mikamai.com/post/79398725537/using-native-javascript-objects-from-opal)_
+
+Opal standard lib (stdlib) includes a `Native` module. To use it, you need to download and reference `native.js`. You can find the latest minified one from the CDN [here](http://cdn.opalrb.com/opal/current/native.min.js).
+
+Let's see how it works and wrap `window`:
+
+```ruby
+require 'native'
+
+win = Native(`window`) # equivalent to Native::Object.new(`window`)
+```
+
+To access a Native-wrapped global JavaScript object, we can also use `$$`, after
+we have the `native` module required.
+
+Now what if we want to access one of its properties?
+
+```ruby
+win[:location][:href]                         # => "http://dev.mikamai.com/"
+win[:location][:href] = "http://mikamai.com/" # will bring you to mikamai.com
+```
+
+And what about methods?
+
+```ruby
+win.alert('hey there!')
+```
+
+So let’s do something more interesting:
+
+```ruby
+class << win
+  # A cross-browser window close method (works in IE!)
+  def close!
+    %x{
+      return (#@native.open('', '_self', '') && #@native.close()) ||
+             (#@native.opener = null && #@native.close()) ||
+             (#@native.opener = '' && #@native.close());
+    }
+  end
+
+  # let's assign href directly
+  def href= url
+    self[:location][:href] = url
+  end
+end
+```
+
+That’s all for now, bye!
+
+```ruby
+win.close!
+```
+
+### Calling JavaScript Methods
+
+You can make direct JavaScript method calls on using the `recv.JS.method`
+syntax.  For example, if you have a JavaScript object named `foo` and want to call the
+`bar` method on it with no arguments, with or without parentheses:
+
+```ruby
+# javascript: foo.bar()
+foo.JS.bar
+foo.JS.bar()
+```
+
+You can call the JavaScript methods with arguments, with or without parentheses, just
+like Ruby methods:
+
+```ruby
+# JavaScript: foo.bar(1, "a")
+foo.JS.bar(1, :a)
+foo.JS.bar 1, :a
+```
+
+You can call the JavaScript methods with argument splats:
+
+```ruby
+# JavaScript: ($a = foo).bar.apply($a, [1].concat([2, 3]))
+foo.JS.bar(1, *[2, 3])
+foo.JS.bar 1, *[2, 3]
+```
+
+You can provide a block when making a JavaScript method call, and it will be
+converted to a JavaScript function added as the last argument to the method:
+
+```ruby
+# JavaScript:
+# ($a = (TMP_1 = function(arg){
+#     var self = TMP_1.$$s || this;
+#     if (arg == null) arg = nil;
+#     return "" + (arg.method()) + " " + (self.$baz(3))
+#    },
+#    TMP_1.$$s = self, TMP_1),
+# foo.bar)(1, 2, $a);
+foo.JS.bar(1, 2){|arg| arg.JS.method + baz(3)}
+```
+
+Note how `self` is set for the JavaScript function passed as an argument.  This
+allows normal Ruby block behavior to work when passing blocks to JavaScript
+methods.
+
+The `.JS.` syntax is recognized as a special token by the lexer, so if you have
+a Ruby method named `JS` that you want to call, you can add a space to call it:
+
+```ruby
+# call Ruby JS method on foo, call Ruby bar method on result
+foo. JS.bar
+```
+
+### Getting/Setting JavaScript Properties
+
+You can get JavaScript properties using the `recv.JS[:property]` syntax:
+
+```ruby
+# JavaScript: foo["bar"]
+foo.JS[:bar]
+```
+
+This also works for JavaScript array access:
+
+```ruby
+# JavaScript: foo[2]
+foo.JS[2]
+```
+
+You can set JavaScript properties using this as the left hand side in an
+assignment:
+
+```ruby
+# JavaScript: foo["bar"] = 1
+foo.JS[:bar] = 1
+```
+
+This also works for setting values in a JavaScript array:
+
+```ruby
+# JavaScript: foo[2] = "a"
+foo.JS[2] = :a
+```
+
+Like the `recv.JS.method` syntax, `.JS[` is recognized as a special token by
+the lexer, so if you want to call the Ruby `JS` method on a object and then
+call the Ruby `[]` method on the result, you can add a space:
+
+```ruby
+# call Ruby JS method on foo, call Ruby [] method on result with :a argument
+foo. JS[:a]
+```
+
+### Calling JavaScript Operators
+
+Opal has a `js` library in the stdlib that provides a `JS` module which can
+be used to call JavaScript operators such as `new`.  Example:
+
+```ruby
+require 'js'
+
+# new foo(bar)
+JS.new(foo, bar)
+
+# delete foo["bar"]
+JS.delete(foo, :bar)
+
+# "bar" in foo
+JS.in(:bar, foo)
+
+# foo instanceof bar
+JS.instanceof(foo, bar)
+
+# typeof foo
+JS.typeof(foo)
+```
+
+### Calling JavaScript Global Functions
+
+You can also use the `js` library to call JavaScript global functions via
+`JS.call`:
+
+```ruby
+require 'js'
+
+# parseFloat("1.1")
+JS.call(:parseFloat, "1.1")
+```
+
+For convenience, `method_missing` is aliased to call, allowing you to call
+global JavaScript methods directly on the `JS` module:
+
+```ruby
+require 'js'
+
+# parseFloat("1.1")
+JS.parseFloat("1.1")
+```
+
+
+### Wrapping JavaScript Libraries
+
+If you want to integrate a JavaScript library with Opal, so that you can make Ruby calls, you can choose one of the following options:
+
+- **Use backticks:** This is the quickest, simplest approach to integrating: call the native JavaScript code directly; it may provide a slight performance benefit, but also produces "ugly" Ruby code riddled with JavaScript. It's ideal for occasional calls to a JavaScript library.
+
+- **Use `.JS`:** You can make direct JavaScript method calls on using the `recv.JS.method` syntax.  It is very similar to using backticks but looks more like ruby.
+
+- **Use `Native`:** `Native` provides a reasonable Ruby-like wrapper around JavaScript objects. This provides a quick in-term solution if no dedicated Ruby wrapper library exists.
+
+- **Create your own Wrapper Library:** If you use the library a lot, you can create your own Ruby library that wraps the JavaScript calls (which call `Native` or use backticks under the hood). This provides the best abstraction (eg. you can provide high-level calls that provide functionality, regardless of if the underlying JavaScript call flows change).
+
+
+## Ruby from JavaScript
+
+Accessing classes and methods defined in Opal from the JavaScript runtime is
+possible via the `Opal` JS object. Consider following code:
+
+```ruby
+module Bar
+  BAR = 123
+end
+
+class Foo
+  include Bar
+  FOO = 456
+
+  def foo
+    puts "called #foo on class ::Foo defined in Ruby code"
+  end
+end
+
+BAZ = 789
+```
+
+### Navigating constants
+
+Top level constants can be accessed as properties of `Opal`:
+
+
+```javascript
+Opal.Object;       // => Object
+Opal.Kernel;       // => Kernel
+Opal.Array;        // => Array
+Opal.RUBY_VERSION; // => "2.3"
+Opal.Foo;          // => Foo
+Opal.BAZ;          // => 789
+```
+
+To reach nested constants the safest way is to call `#const_get` on `Object`:
+
+```javascript
+Opal.Object.$const_get('Bar::BAR'); // => 123
+Opal.Object.$const_get('Foo::BAR'); // => 123
+Opal.Object.$const_get('Foo::FOO'); // => 456
+Opal.Object.$const_get('BAZ');      // => 789
+```
+
+Constants can also be navigated using the `$$` property, although this is limited to constants defined directly under the current object:
+
+```javascript
+Opal.Bar.$$.BAR // => 123
+Opal.Foo.$$.FOO // => 456
+Opal.Foo.$$.BAR // => undefined
+```
+
+A later feature also allows you to skip the `$$` property:
+
+```javascript
+Opal.Bar.BAR // => 123
+Opal.Foo.FOO // => 456
+Opal.Foo.BAR // => undefined
+```
+
+
+### Calling methods
+
+**Methods** are always prefixed by a single `$`:
+
+```javascript
+// Equivalent to:
+//   Foo.new.foo
+Opal.Foo.$new().$foo(); // => "called #foo on class ::Foo defined in Ruby code"
+
+// Equivalent to:
+//   "hello there".sub('there', 'world')
+("hello there").$sub('there', 'world'); // => "hello world"
+```
+
+**Methods names unsupported in JS** should be called using the JS bracket notation:
+
+```javascript
+// Equivalent to:
+//   hash = Hash.new["key"] = "value"
+//   hash["key"] = "value"
+var hash = Opal.Hash.$new();  // => {}
+hash["$[]="]("key", "value"); // => "value"
+
+// Equivalent to:
+//   [1,2,3].reverse!
+[1,2,3]['$reverse!'](); // => [3,2,1]
+
+// Equivalent to:
+//   1 == 2
+(1)['$=='](2); // => false
+```
+
+**Passing blocks** from JS is a bit more tricky, so the suggested solution is to use `Opal.send(…)`:
+
+```javascript
+// Equivalent to:
+//   [1,2,3].map {|n| n * 2}
+Opal.send([1,2,3], 'map', [], function(n) {return n * 2}); // => [2,4,6]
+```
+
+Alternatively blocks can also be called *the hard way* by assigning the block-function to the property `$$p` of the method:
+
+```javascript
+// Equivalent to:
+//   [1,2,3].map {|n| n * 2}
+array = [1,2,3]
+array.$map.$$p = function(n) {return n * 2}; // "$$p" stands for "proc"
+array.$map(); // => [2,4,6]
+```
+
+
+
+### Hash
+
+Since Ruby hashes are implemented directly with an Opal class, there's no "toll-free" bridging available (unlike with strings and arrays, for example). However, it's quite possible to interact with hashes from JavaScript:
+
+```javascript
+var myHash = Opal.hash({a: 1, b: 2});
+// output of $inspect: {"a"=>1, "b"=>2}
+myHash.$store('a', 10);
+// output of $inspect: {"a"=>10, "b"=>2}
+myHash.$fetch('b','');
+// 2
+myHash.$fetch('z','');
+// ""
+myHash.$update(Opal.hash({b: 20, c: 30}));
+// output of $inspect: {"a"=>10, "b"=>20, "c"=>30}
+myHash.$to_n(); // provided by the Native module
+// output: {"a": 10, "b": 20, "c": 30} aka a standard JavaScript object
+```
+
+NOTE: Be aware `Hash#to_n` produces a duplicate copy of the hash.
+
+## Advanced Compilation
+
+### Method Missing
+
+Opal supports `method_missing`. This is a key feature of Ruby, and Opal wouldn't be much use without it! This page details the implementation of `method_missing` for Opal.
+
+#### Method dispatches
+
+Firstly, a Ruby call `foo.bar 1, 2, 3` is compiled into the following JavaScript:
+
+```javascript
+foo.$bar(1, 2, 3)
+```
+
+This should be pretty easy to read. The `bar` method has a `$` prefix just to distinguish it from underlying JavaScript properties, as well as Ruby ivars. Methods are compiled like this to make the generated code really readable.
+
+#### Handling `method_missing`
+
+JavaScript does not have an equivalent of `method_missing`, so how do we handle it? If a function is missing in JavaScript, then a language level exception will be raised.
+
+To get around this, we make use of our compiler. During parsing, we collect a list of all method calls made inside a Ruby file, and this gives us a list of all possible method calls. We then add stub methods to the root object prototype (an Opal object, not the global JavaScript Object) which will proxy our method missing calls for us.
+
+For example, assume the following Ruby script:
+
+```ruby
+first 1, 2, 3
+second "wow".to_sym
+```
+
+After parsing, we know we only ever call 3 methods: `[:first, :second, :to_sym]`. So, imagine we could just add these 3 methods to `BasicObject` in Ruby, we would get something like this:
+
+```ruby
+class BasicObject
+  def first(*args, &block)
+    method_missing(:first, *args, &block)
+  end
+
+  def second(*args, &block)
+    method_missing(:second, *args, &block)
+  end
+
+  def to_sym(*args, &block)
+    method_missing(:to_sym, *args, &block)
+  end
+end
+```
+
+It is obvious from here, that unless an object defines any given method, it will always resort in a dispatch to `method_missing` from one of our defined stub methods. This is how we get `method_missing` in Opal.
+
+#### Optimising generated code
+
+To optimise the generated code slightly, we reduce the code output from the compiler into the following JavaScript:
+
+```javascript
+Opal.add_stubs("first,second,to_sym"]);
+```
+
+You will see this at the top of all your generated JavaScript files. This will add a stub method for all methods used in your file.
+
+#### Alternative approaches
+
+The old approach was to inline `method_missing` calls by checking for a method on **every method dispatch**. This is still supported via a parser option, but not recommended.
diff --git a/docs/compiler.md b/docs/compiler.md
new file mode 100644
index 00000000..7ec0543b
--- /dev/null
+++ b/docs/compiler.md
@@ -0,0 +1,33 @@
+# Opal Compiler
+
+Opal is a source to source compiler. It accepts ruby code as a string and
+generates javascript code which can be run in any environment. Generated
+code relies on the opal runtime which provides the class system and some
+other runtime helpers.
+
+## Compiler stages
+
+The compiler can be broken down into 3 separate stages:
+
+* lexing/parsing
+* code generation
+
+### Lexer/Parser
+
+The [opal parser][parser] relies on the `parser` gem, see debug/development documentation there to know more about its internals: https://whitequark.github.io/parser/.
+
+### Code generation
+
+The [opal compiler][compiler] takes these sexps from the parser
+and generates ruby code from them. Each type of sexp has [its own node type][base-node]
+used to generate javascript. Each node creates an array of one or more
+[fragments][fragments] which are the concatenated together to
+form the final javascript. Fragments are used as they contain the generated
+code as well as a reference back to the original sexp which is useful for
+generating source maps afterwards.
+
+
+[sexps]: https://github.com/opal/opal/tree/master/lib/opal/parser/sexp.rb
+[compiler]: https://github.com/opal/opal/tree/master/lib/opal/compiler.rb
+[fragments]: https://github.com/opal/opal/tree/master/lib/opal/fragment.rb
+[base-node]: https://github.com/opal/opal/tree/master/lib/opal/nodes/base.rb
diff --git a/docs/compiler_directives.md b/docs/compiler_directives.md
new file mode 100644
index 00000000..ef54dcbc
--- /dev/null
+++ b/docs/compiler_directives.md
@@ -0,0 +1,133 @@
+# Compiler Directives
+
+The Opal compiler supports some special directives that can optimize or
+enhance the output of compiled Ruby code to suit the Ruby environment.
+
+## Require Directive
+
+All calls to `require` are captured so that the compiler and build tools
+can determine which dependencies a file has. In the case of `Builder`,
+these are collated and then added to a list of files to be processed.
+
+### `require`
+
+Assuming we have a file `foo.rb`:
+
+    # foo.rb
+    require 'bar'
+    require 'baz'
+
+The compiler will collect these two dependencies, and then `Builder`
+will attempt to discover them within the Opal load path to also compile
+them into the target output. If these dependencies cannot be resolved,
+then a compile time error will be thrown.
+
+#### Dynamic Requires
+
+Opal only supports hard-coded requires. This means that any dynamically
+generated require statements cannot be discovered. Opal may raise an
+error or just produce a warning if a dynamic require is used. A dynamic
+require is any require that cannot be resolved using static analysis. A
+common use case of dynamic requires is to include a directory of Ruby
+files. In this case, see `require_tree` below.
+
+### `require_relative`
+
+`require_relative` is also supported by Opal's compiler for ahead-of-time
+inclusion.
+
+    # foo.rb
+    require_relative 'bar'
+
+This example will try to resolve `bar.rb` in the same directory.
+
+### `autoload`
+
+`autoload` is used to load a modules and classes within a modules
+namespace. As long as the string argument given to `autoload` can be
+resolved in Opal's load paths, in the same way as `require`, then these
+referenced dependencies will also be compiled.
+
+    # foo.rb
+    module Foo
+      autoload :Bar, 'bar'
+    end
+
+In this example, `bar.rb` will also be required.
+
+### `require_tree`
+
+`require_tree` can be used as an Opal-friendly alternative to globbing
+over a directory to require a list of dependencies.
+
+    # foo.rb
+    require_tree './models'
+
+This will, at compile time, resolve all files inside the `models/`
+directory and also compile them to the output. At runtime this method
+will then loop over all modules defined, and require them if they match
+that given module path.
+
+Note: The given directory **must** be inside Opal's load path, otherwise
+no files will be compiled.
+
+### Handling non-Ruby requirements
+
+Opal's `require` method is also special as it allows non-Ruby source
+files to be required and generated in the output. The obvious example of
+this is requiring JavaScript source files. JavaScript sources are
+treated as first class citizens in Opal. The Opal gem also supports
+compiling `.erb` files using the same process.
+
+## Opal Specific Code Compilation
+
+A special case `if` and `unless` statements can hide or show blocks of
+code from the Opal compiler. These check against `RUBY_ENGINE` or
+`RUBY_PLATFORM`. As these are valid Ruby statements against constants
+that exist in all Ruby runtimes, they will not affect any running code:
+
+```ruby
+if RUBY_ENGINE == 'opal'
+  # this code compiles
+else
+  # this code never compiles
+end
+```
+
+Unless statements are also supported:
+
+```ruby
+unless RUBY_ENGINE == 'opal'
+  # this code will not run
+end
+```
+
+
+Also `!=` statements work:
+
+```ruby
+if RUBY_ENGINE != 'opal'
+  puts 'do not run this code'
+end
+```
+
+
+These blocks of code don't run at all at runtime, but they also never
+compile so will never be in the output JavaScript code. This is
+particularly useful for using code in both MRI and Opal.
+
+Some uses are:
+
+  * Avoid `require` statements being picked up by Opal compile time
+    require handling.
+
+  * To stop certain requires taking place for Opal (and vice-versa for
+    shared libraries).
+
+  * To wrap x-strings which might break in compiled JavaScript output.
+
+  * To simply avoid compiling large blocks of code that are not needed
+    in the JavaScript/Opal version of an app.
+
+In all these examples `RUBY_PLATFORM` can be used instead of
+`RUBY_ENGINE`.
diff --git a/docs/configuring_gems.md b/docs/configuring_gems.md
new file mode 100644
index 00000000..f27ef88b
--- /dev/null
+++ b/docs/configuring_gems.md
@@ -0,0 +1,148 @@
+# Configuring Gems For Opal
+
+To configure a gem to run in Opal the gem will need a couple of things:
+
+1. The opal gem running on a server (so the ruby code can get compiled to JavaScript).
+2. The Opal search path has to know to look for your gem when it is required.
+
+This is done by having the following 2 lines in your outermost .rb file:
+
+```ruby
+require 'opal'
+Opal.append_path File.expand_path('..', __FILE__).untaint
+```
+
+However it only makes sense to execute these lines outside of Opal, since what they do is set things up for Opal to find and compile the files to .js. So how these lines get added to your gem depends on whether the gem can usefully run in the normal server environment as well as in Opal, or just strictly in Opal.
+
+For example, you have a gem that parses, validates, and gives details on email addresses.  This gem would be just as useful on the server, as running
+in the browser.
+
+On the other hand you have a gem that does something with the DOM.  There would be no point in making this gem available to the server.
+
+Each case is detailed below, assuming you have a Gem file structure like this:
+
+
+```
+/lib
+  /your_gem_directory
+    /your_gem_file1.rb
+    /your_gem_file2.rb
+    /...
+    /version.rb
+  /your_gem.rb
+```
+
+## Configuring Gems To Run Everywhere
+
+If your gem will work both in Opal and in a classic ruby environment
+your outer .rb file (`your_gem.rb`) needs to look like this
+
+```ruby
+# require all the files, regardless of whether this code is running
+# to run on the server, or inside of Opal.
+require_relative 'your_gem_directory/your_gem_file1.rb'
+require_relative 'your_gem_directory/your_gem_file2.rb'
+# etc
+require_relative 'your_gem_directory/version'
+unless RUBY_ENGINE == 'opal'
+  # Now if we are NOT running inside of opal, set things up so opal can find
+  # the files. The whole thing is rescued in case the opal gem is not available.
+  # This would happen if the gem is being used server side ONLY.
+  begin
+    require 'opal'
+    Opal.append_path File.expand_path('..', __FILE__).untaint
+  rescue LoadError
+  end
+end
+```
+
+So lets see what happens here.
+
+1. Somebody is going to require this file, perhaps implicitly (for example you are running in rails.)
+2. Standard ruby is going to execute the `require`s, which will load your gem sources, then
+3. because the `RUBY_ENGINE` is _not_ `opal`, Opal will be required, and your directory of sources added to Opal's search path.
+4. Someplace else in some Opal code, the gem will _again_ be required, and so opal searches and finds the gem,
+5. and runs this file again, _but now inside_ of the Opal environment.  This time the `RUBY_ENGINE` _is_ Opal so the `require 'opal'` etc will not be executed.
+
+The result is that you have two versions of the code, one in standard ruby, and a second compiled to .js and ready to be served.
+
+## Configuring Gems To Run In Opal Only
+
+If it makes no sense to run the code in standard Ruby (i.e. on the server) then the above code can look like this:
+
+```ruby
+# require all the files, only if Opal is executing
+if RUBY_ENGINE == 'opal'
+  require_relative 'your_gem_directory/your_gem_file1.rb'
+  require_relative 'your_gem_directory/your_gem_file2.rb'
+  # etc
+  require_relative 'your_gem_directory/version'
+else
+  # NOT running inside of opal, set things up
+  # so opal can find the files.
+  require 'opal'
+  Opal.append_path File.expand_path('..', __FILE__).untaint
+end
+```
+
+## Testing
+
+Regardless of which case your gem is designed for, you will want to make sure you test inside the Opal environment.  If nothing else you will want to make sure you have all the above configuration setup correctly.
+
+To do this add the following to your gemspec:
+
+```ruby
+spec.add_development_dependency "opal-rspec"
+spec.add_development_dependency "opal"
+```
+
+Then setup the following in config.ru (assuming your specs are in the /spec directory.)
+
+```ruby
+require 'bundler'
+Bundler.require
+
+require 'opal-rspec'
+Opal.append_path File.expand_path('../spec', __FILE__)
+
+run Opal::Server.new { |s|
+  s.main = 'opal/rspec/sprockets_runner'
+  s.append_path 'spec'
+  s.debug = false
+  s.index_path = 'spec/index.html.erb'
+}
+```
+
+Finally create a index.html.erb file in the spec directory with the following contents:
+
+```html
+<!DOCTYPE html>
+<html>
+<head>
+</head>
+<body>
+  <%= javascript_include_tag @server.main %>
+</body>
+</html>
+```
+
+With all this setup, you can run specs normally to test standard ruby execution, and then do
+
+    bundle exec rackup
+
+and point your browser to localhost, and you will see your spec results running in the Opal environment.
+
+Don't forget to checkout the added features of the opal-rspec gem such as async specs.
+
+## Conditional Execution
+
+In some cases you might have to check whether you are in Opal or not, just wrap the code in:
+
+```ruby
+if RUBY_ENGINE == 'opal'
+  # …
+end
+```
+
+This might happen in your specs or in the actual gem code.
+
diff --git a/docs/encoding.md b/docs/encoding.md
new file mode 100644
index 00000000..f9b38c76
--- /dev/null
+++ b/docs/encoding.md
@@ -0,0 +1,13 @@
+# Encoding
+
+Encoding support is partial and mostly given by the encoding set by the HTML page.
+We suggest to always set encoding to UTF-8 explicitly:
+
+```html
+<!doctype html>
+<html>
+  <head>
+    <meta charset="UTF-8" />
+    <!-- ... -->
+```
+
diff --git a/docs/faq.md b/docs/faq.md
new file mode 100644
index 00000000..d245745a
--- /dev/null
+++ b/docs/faq.md
@@ -0,0 +1,17 @@
+# FAQ
+
+### Why does Opal exist?
+
+To try and keep ruby relevant in a world where client-side applications are making javascript the primary development platform.
+
+### How compatible is Opal?
+
+We run opal against the [ruby spec](https://github.com/ruby/spec) as our primary testing setup. We try to make Opal as compatible as possible, whilst also taking into account restrictions of JavaScript when applicable. Opal supports the majority of ruby syntax features, as well as a very large part of the corelib implementation. We support method\_missing, modules, classes, instance\_exec, blocks, procs and lots lots more. Opal can compile and run RSpec unmodified, as well as self hosting the compiler at runtime.
+
+### What version of ruby does Opal target?
+
+We are running tests under ruby 3.0.0 conditions, but are mostly compatible with 2.6 level features.
+
+### Why doesn't Opal support mutable strings?
+
+All strings in Opal are immutable because ruby strings just get compiled directly into javascript strings, which are immutable. Wrapping ruby strings as a custom JavaScript object would add a lot of overhead as well as making interaction between ruby and javascript libraries more difficult.
diff --git a/docs/getting_started.md b/docs/getting_started.md
new file mode 100644
index 00000000..0d46c588
--- /dev/null
+++ b/docs/getting_started.md
@@ -0,0 +1,47 @@
+# Getting Started
+
+Opal is a ruby to javascript compiler, an implementation of the ruby corelib and stdlib, and associated gems for building fast client side web applications in ruby.
+
+## Installation
+
+Opal is available as a gem, and can be installed via:
+
+```
+$ gem install opal
+```
+
+Or added to your Gemfile as:
+
+```ruby
+gem 'opal'
+```
+
+## Getting started with Opal
+
+At its very core, opal provides a simple method of compiling a string of ruby into javascript that can run on top of the opal runtime, provided by `opal.js`:
+
+```ruby
+Opal.compile("[1, 2, 3].each { |a| puts a }")
+# => "(function() { ... })()"
+```
+
+`opal` includes sprockets support for compiling Ruby (and ERB) assets, and treating them as first class JavaScript citizens. It works in a similar way to CoffeeScript, where JavaScript files can simply require Ruby sources, and Ruby sources can require JavaScript and other Ruby files.
+
+This relies on the Opal load path. Any gem containing opal code registers that directory to the Opal load path. Opal will then use all Opal load paths when running sprockets instances. For rails applications, `opal-rails` does this automatically. For building a simple application, we have to do this manually.
+
+
+### Adding lookup paths
+
+Opal uses a load path which works with sprockets to create a set of locations which opal can require files
+from. If you want to add a directory to this load path, you can add it to the global environment.
+
+In the `Opal` module, a property `paths` is used to hold the load paths which
+`Opal` uses to require files from. You can add a directory to this:
+
+```ruby
+Opal.append_path '../my_lib'
+```
+
+Now, any ruby files in this directory can be discovered.
+
+
diff --git a/docs/headless_chrome.md b/docs/headless_chrome.md
new file mode 100644
index 00000000..9a5e1120
--- /dev/null
+++ b/docs/headless_chrome.md
@@ -0,0 +1,95 @@
+# Headless Chrome
+
+## Requirements
+
+First of all, make sure that you have Chrome at least 59.0 installed.
+
+## Using the runner
+
+To run your code using headless chrome, use `-R chrome` (`--runner chrome`) option:
+
+    $ opal -Rchrome -e "puts 'Hello, Opal'"
+    Hello, Opal
+
+The runner also listens for any exceptions and prints formatted stracktraces back to your console:
+
+    $ opal -Rchrome -e "
+    def raising_method
+      raise 'test error'
+    end
+
+    raising_method
+    "
+
+    RuntimeError: test error
+      from <internal:corelib/…>:2693:7:in `<main>'
+      from -e:1:1:in `undefined'
+
+## Using exit codes
+
+By default headless chrome runner explicitly sets exit code to 1 when there was any error in the code.
+
+    $ opal -Rchrome -e "42"; echo $?
+    0
+
+    $ opal -Rchrome -e "raise 'error'"; echo $?
+    RuntimeError: error
+      from <internal:corelib/kerne…>:2693:7:in `<main>'
+      from -e:1:1:in `undefined'
+    1
+
+You can change final exit code by using `Kernel#exit`, but make sure to require `opal/platform` in your code.
+
+    $ opal -Rchrome -ropal/platform -e "exit(0)"; echo $?
+    0
+
+    $ opal -Rchrome -ropal/platform -e "exit(1)"; echo $?
+    1
+
+Also `Kernel#exit` doesn't abort your script. It simply takes the value that was passed to the first
+invocation and persists it in `window.OPAL_EXIT_CODE`. Later headless chrome runner extracts it from the chrome runtime.
+
+## Known limitations
+
+1. `exit` doesn't abort you script (but `raise/throw` does)
+2. When you call `console.log(one, two, three)` from your code headless chrome prints only the first passed object.
+   The reason behind it is the format of the message that chrome sends to the runner.
+   Opal intentionally uses a simplified method from Chrome API (`Console.messageAdded`) to catch `console.log` invocations.
+   (Check `lib/opal/cli_runners/chrome.js` do get more information)
+
+## Internals
+
+Under the hood when you call `opal -Rchrome -e 'your code'` Opal uses chrome runner that is defined in
+`lib/opal/cli_runners/chrome.rb`. This runner tries to connect to `localhost:9222` (9222 is a default port for a headless chrome server)
+or runs the server on its own. It detects your platform and uses a default path to the chrome executable
+(`Opal::CliRunners::Chrome#chrome_executable`) but you can override it by specifying `GOOGLE_CHROME_BINARY` environment
+variable.
+
+When the server is up and running it passes compiled js code to `lib/opal/cli_runners/chrome_cdp_interface.rb`
+as a plain input using stdin (basically, it's a second part of the runner).
+`chrome_cdp_interface.rb` is a node js + Opal script that does the main job. It runs any provided code on the running chrome server,
+catches errors and forwards console messages.
+
+
+## Using a remote chrome server
+
+If you want to change a default chrome port or your chrome server is running on a different host:port
+you can override default values by specifying `CHROME_HOST` and `CHROME_PORT` environment variables:
+
+      $ CHROME_HOST=10.10.10.10 CHROME_PORT=8080 opal -Rchrome -e "puts 42"
+      Connecting to 10.10.10.10:8080...
+      42
+
+NOTE: `CHROME_HOST` requires a chrome server to be started. You can't start remotely a server on a different host.
+
+
+## Additional options
+
+If you need to pass additional CLI options to the Chrome executable you can do so by setting the `CHROME_OPTS` environment variable:
+
+      $ CHROME_OPTS="--window-size=412,732" opal -Rchrome -e "puts 42"
+      42
+
+Docker users may need `CHROME_OPTS="--no-sandbox"` due to the user namespaces limitations.
+
+_For a list of additional options see https://developers.google.com/web/updates/2017/04/headless-chrome_
diff --git a/docs/jquery.md b/docs/jquery.md
new file mode 100644
index 00000000..92977854
--- /dev/null
+++ b/docs/jquery.md
@@ -0,0 +1,292 @@
+# JQuery
+
+`opal-jquery` offers a nicer ruby-like syntax for JQuery. It is useful for projects which cannot use `opal-browser` due to a reliance on jquery for plugins or other libraries.
+
+```ruby
+foos = Element.find('.foo')
+# => [<div class="foo">, ...]
+
+foos.class
+# => JQuery
+
+foos.on(:click) do
+  alert "element was clicked"
+end
+```
+
+### Getting Started
+
+#### Installation
+
+`opal-jquery` is distributed as a gem, and needs to be added to your `Gemfile`:
+
+```ruby
+# Gemfile
+gem 'opal'
+gem 'opal-jquery'
+```
+
+#### Usage
+
+`opal-jquery` can now be easily added to your opal application sources:
+
+```ruby
+# app/application.rb
+
+# Remember to compile opal-jquery with your javascript application.
+# See "Compiling" below for an example on compiling dependencies.
+require 'opal/jquery'
+
+alert "Hello from jquery + opal"
+```
+
+The `#alert` method is provided by `opal-jquery`. If the message displays, then
+`jquery` support should be working.
+
+
+#### Compiling
+
+When compiling your application to javascript, you must be sure to include both
+Opal and Opal-JQuery so they'll be available to your application:
+
+```ruby
+require 'opal'
+require 'opal-jquery'
+
+builder = Opal::Builder.new
+builder.build('opal')
+builder.build('opal-jquery')
+builder.build('./app/application.rb')
+
+File.write('application.js', builder.to_s)
+```
+
+then simply load the compiled file in your html:
+
+```html
+<!DOCTYPE html>
+<html>
+  <head>
+    <script src='https://code.jquery.com/jquery-3.3.1.min.js' integrity='sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8=' crossorigin='anonymous'></script> 
+    <script type='text/javascript' src='./application.js'></script>
+  </head>
+  <body></body>
+</html>
+```
+
+NOTE: opal-jquery expects a jquery library to be loaded. This example loads it
+remotely from jquery.com, but a locally downloaded copy works just as well, or- 
+if you're using rails- jquery may be included automatically.
+
+This example builds opal, opal-jquery and the application into a single `.js` file, 
+but you may build them separately, if you so choose. Just remember to include 
+each respective script in your html!
+
+### How does opal-jquery work
+
+`opal-jquery` provides an `Element` class, whose instances are toll-free
+bridged instances of jquery objects. Just like ruby arrays are just javascript
+arrays, `Element` instances are just jquery objects. This makes interaction
+with jquery plugins much easier.
+
+### Interacting with the DOM
+
+#### Finding Elements
+
+opal-jquery provides the `Element` class, which can be used to find elements in
+the current document:
+
+```ruby
+Element.find('#header')
+```
+
+`Element.find` is aliased to `Element[]`:
+
+```ruby
+Element['.my-class']
+```
+
+These methods acts just like `$('selector')`, and can use any jQuery
+compatible selector:
+
+```ruby
+Element.find('#navigation li:last')
+```
+
+The result is just a jQuery instance, which is toll-free bridged to
+instances of the `Element` class in ruby:
+
+```ruby
+Element.find('.foo').class
+# => Element
+```
+
+Instances of `Element` also have the `#find` method available for
+finding elements within the scope of each DOM node represented by
+the instance:
+
+```ruby
+el = Element.find('#header')
+el.find '.foo'
+# => #<Element .... >
+```
+
+#### Running code on document ready
+
+Just like jQuery, opal-jquery requires the document to be ready to
+be able to fully interact with the page. Any top level access should
+use the `ready?` method:
+
+```ruby
+Document.ready? do
+  alert "document is ready to go!"
+end
+```
+
+The `Kernel#alert` method is shown above too.
+
+#### Event handling
+
+The `Element#on` method is used to attach event handlers to elements:
+
+```ruby
+Element.find('#header').on :click do
+  puts "The header was clicked!"
+end
+```
+
+Selectors can also be passed as a second argument to handle events
+on certain children:
+
+```ruby
+Element.find('#header').on(:click, '.foo') do
+  puts "An element with a 'foo' class was clicked"
+end
+```
+
+An `Event` instance is optionally passed to block handlers as well,
+which is toll-free bridged to jquery events:
+
+```ruby
+Element.find('#my_link').on(:click) do |evt|
+  evt.stop_propagation
+  puts "stopped the event!"
+end
+```
+
+You can access the element which triggered the event by `#current_target`.
+
+```ruby
+Document.on :click do |evt|
+  puts "clicked on: #{evt.current_target}"
+end
+```
+
+#### CSS styles and classnames
+
+The various jQuery methods are available on `Element` instances:
+
+```ruby
+foo = Element.find('.foo')
+
+foo.add_class 'blue'
+foo.remove_class 'foo'
+foo.toggle_class 'selected'
+```
+
+There are also added convenience methods for opal-jquery:
+
+```ruby
+foo = Element.find('#header')
+
+foo.class_name
+# => 'red lorry'
+
+foo.class_name = 'yellow house'
+
+foo.class_name
+# => 'yellow house'
+```
+
+`Element#css` also exists for getting/setting css styles:
+
+```ruby
+el = Element.find('#container')
+el.css 'color', 'blue'
+el.css 'color'
+# => 'blue'
+```
+
+### HTTP/AJAX requests
+
+jQuery's Ajax implementation is also wrapped in the top level HTTP
+class.
+
+```ruby
+HTTP.get("/users/1.json") do |response|
+  puts response.body
+  # => "{\"name\": \"Adam Beynon\"}"
+end
+```
+
+The block passed to this method is used as the handler when the request
+succeeds, as well as when it fails. To determine whether the request
+was successful, use the `ok?` method:
+
+```ruby
+HTTP.get("/users/2.json") do |response|
+  if response.ok?
+    alert "successful!"
+  else
+    alert "request failed :("
+  end
+end
+```
+
+It is also possible to use a different handler for each case:
+
+```ruby
+request = HTTP.get("/users/3.json")
+
+request.callback {
+  puts "Request worked!"
+}
+
+request.errback {
+  puts "Request didn't work :("
+}
+```
+
+The request is actually triggered inside the `HTTP.get` method, but due
+to the async nature of the request, the callback and errback handlers can
+be added anytime before the request returns.
+
+#### Handling responses
+
+Web apps deal with JSON responses quite frequently, so there is a useful
+`#json` helper method to get the JSON content from a request:
+
+```ruby
+HTTP.get("/users.json") do |response|
+  puts response.body
+  puts response.json
+end
+
+# => "[{\"name\": \"Adam\"},{\"name\": \"Ben\"}]"
+# => [{"name" => "Adam"}, {"name" => "Ben"}]
+```
+
+The `#body` method will always return the raw response string.
+
+If an error is encountered, then the `#status_code` method will hold the
+specific error code from the underlying request:
+
+```ruby
+request = HTTP.get("/users/3.json")
+
+request.callback { puts "it worked!" }
+
+request.errback { |response|
+  puts "failed with status #{response.status_code}"
+}
+```
diff --git a/docs/opal_parser.md b/docs/opal_parser.md
new file mode 100644
index 00000000..eb1d0aaa
--- /dev/null
+++ b/docs/opal_parser.md
@@ -0,0 +1,55 @@
+# Parsing Ruby from JavaScript with `opal-parser`
+
+Generally is best to precompile Ruby source files to JavaScript server-side but sometimes may become useful to be able to compile Ruby to JavaScript directly from JS.
+
+Opal is able to compile its – pure Ruby – compiler to JavaScript (how cool is that!). The whole compiler chain is available in the `stdlib` as `opal-parser`.
+
+```ruby
+require 'opal-parser'
+```
+
+_Note: For the best performance and application load times, it is strongly recommended to design your application so that it won't need the parser. A lot of methods described in this document are more fun hacks than robust solutions. But if you really want or need to use them, for example so that you can implement a Ruby REPL or an interactive Ruby playground - we have you covered, but for all other cases, we strongly discourage you to take an advice from this guide._
+
+
+## Features
+
+### `Kernel#eval`
+
+`opal-parser` provides a partial implementation of `Kernel#eval`.
+
+Example:
+
+```ruby
+require 'opal-parser'
+eval "puts 'hello world!'"
+```
+
+
+### `Kernel#require_remote`
+
+Will fetch a remote URL (by means of a sync `XMLHttpRequest`) and evaluate its contents as Ruby code.
+
+Example:
+
+```ruby
+require 'opal-parser'
+require_remote 'http://pastie.org/pastes/10444960/text'
+HelloWorld.new.say_hello!
+```
+
+
+### `Opal.compile()` and `Opal.eval()` (JavaScript)
+
+After requiring `opal-parser` both `Opal.compile()` and `Opal.eval()` functions are added to the JavaScript API.
+
+`Opal.compile(string, options)` (JavaScript) will forward the call to `Opal.compile` (Ruby) converting options from a plain JS object to a Ruby Hash.
+`Opal.eval(string)` will compile the given code to JavaScript and then pass it to the [native `eval()` function][eval].
+
+
+### Support for `<script type="text/ruby">`
+
+When `opal-parser` is required it will search the page for any `<script>` tag with type `text/ruby`.
+If an `src` attribute is present will fetch and eval the file with `Kernel#require_remote` otherwise it will get the script tags contents and eval them with `Kernel#eval`.
+
+
+[eval]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/eval
diff --git a/docs/promises.md b/docs/promises.md
new file mode 100644
index 00000000..c8ab1d42
--- /dev/null
+++ b/docs/promises.md
@@ -0,0 +1,66 @@
+# Promise
+
+`Promise` is a class available in the Opal stdlib for helping structure asynchronous code.
+
+It can be required inside any Opal applicaton:
+
+```ruby
+require 'promise'
+```
+
+_Please also take a look at the Asynchronous code guide - we are in the process of modernizing the Promises, along with supporting async/await_
+
+## Usage
+
+This example shows how to use a `HTTP` request from `opal-jquery` from a callback style, into a promise style handler.
+
+```ruby
+def get_json(url)
+  promise = Promise.new
+
+  HTTP.get(url) do |response|
+    if response.ok?
+      promise.resolve response.json
+    else
+      promise.reject response
+    end
+  end
+
+  promise
+end
+
+get_json('/users/1.json').then do |json|
+  puts "Got data: #{json}"
+end.fail do |res|
+  alert "It didn't work :( #{res}"
+end
+```
+
+A promise can only be resolved or rejected once.
+
+### Chaining Promises
+
+Promises become useful when chained together. The previous example could be extended to get another object from the result of the first request.
+
+```ruby
+get_json('/users/1.json').then do |json|
+  get_json("/posts/#{json[:post_id]}.json")
+end.then do |post|
+  puts "got post: #{post}"
+end
+```
+
+### Composing Promises
+
+`Promise.when` can be used to wait for more than 1 promise to resolve (or reject). Lets assume we wanted to get 2 different users:
+
+```ruby
+first = get_json '/users/1.json'
+second = get_json '/users/2.json'
+
+Promise.when(first, second).then do |user1, user2|
+  puts "got users: #{user1}, #{user2}"
+end.fail do
+  alert "Something bad happened"
+end
+```
diff --git a/docs/rails.md b/docs/rails.md
new file mode 100644
index 00000000..38a52b50
--- /dev/null
+++ b/docs/rails.md
@@ -0,0 +1,120 @@
+# Opal in a Rails application
+
+Add Opal to your Rails app's Gemfile:
+
+``` ruby
+gem 'opal-rails'
+```
+
+## Basic usage through the asset pipeline
+
+To configure your asset pipeline to use opal-rails, make sure to `bundle install`, then rename 
+`app/assets/application.js` to `app/assets/application.js.rb` and set its contents to: 
+
+```ruby
+# app/assets/application.js.rb
+
+# Require the opal runtime and core library
+require 'opal'
+
+# For Rails 5.1 and above, otherwise use 'opal_ujs'
+require 'rails_ujs'
+
+# Require of JS libraries will be forwarded to sprockets as is
+require 'turbolinks'
+
+# a Ruby equivalent of the require_tree Sprockets directive is available
+require_tree '.'
+```
+
+Opal requires are forwarded to the Asset Pipeline at compile time (similarly to what happens for RubyMotion). You can use either the `.rb` or `.opal` extension:
+
+```ruby
+# app/assets/javascripts/greeter.js.rb
+
+puts "G'day world!" # check the console!
+
+# Dom manipulation
+require 'opal-jquery'
+
+Document.ready? do
+  Element.find('body > header').html = '<h1>Hi there!</h1>'
+end
+```
+
+
+
+
+### As a template
+
+You can use it for your views too, it even inherits instance and local variables from actions:
+
+```ruby
+# app/controllers/posts_controller.rb
+
+def create
+  @post = Post.create!(params[:post])
+  render type: :js, locals: {comments_html: render_to_string(@post.comments)}
+end
+```
+
+Each assign is filtered through JSON so it's reduced to basic types:
+
+```ruby
+# app/views/posts/create.js.opal
+
+post = Element.find('.post')
+post.find('.title').html    = @post[:title]
+post.find('.body').html     = @post[:body]
+post.find('.comments').html = comments_html
+```
+
+
+### As a Haml filter (optional)
+
+Of course you need to require `haml-rails` separately since its presence is not assumed
+
+```haml
+-# app/views/posts/show.html.haml
+
+%article.post
+  %h1.title= post.title
+  .body= post.body
+
+%a#show-comments Display Comments!
+
+.comments(style="display:none;")
+  - post.comments.each do |comment|
+    .comment= comment.body
+
+:opal
+  Document.ready? do
+    Element.find('#show-comments').on :click do |click|
+      click.prevent_default
+      click.current_target.hide
+      Element.find('.comments').effect(:fade_in)
+    end
+  end
+```
+
+
+### Spec!
+
+Add specs into `app/assets/javascripts/spec`:
+
+and then a spec folder with you specs!
+
+```ruby
+# app/assets/javascripts/spec/example_spec.js.rb
+
+describe 'a spec' do
+  it 'has successful examples' do
+    'I run'.should =~ /run/
+  end
+end
+```
+
+Then visit `/opal_spec` from your app and **reload at will**.
+
+![1 examples, 0 failures](http://f.cl.ly/items/001n0V0g0u0v14160W2G/Schermata%2007-2456110%20alle%201.06.29%20am.png)
+
diff --git a/docs/releasing.md b/docs/releasing.md
new file mode 100644
index 00000000..28f82e9c
--- /dev/null
+++ b/docs/releasing.md
@@ -0,0 +1,36 @@
+# Releasing
+
+_This guide is a work-in-progress._
+
+## Updating the version
+
+- Update `lib/opal/version.rb`
+- Update `opal/corelib/constants.rb` with the same version number along with release dates
+
+## Updating the changelog
+
+- Ensure all the unreleased changes are documented in UNRELEASED.md
+- Run `bin/rake changelog VERSION=v1.2.3` specifying the version number you're about to release
+- Empty UNRELEASED.md
+
+## The commit
+
+- Commit the updated changelog along with the version bump using this commit message:
+  "Release v1.2.3"
+- Push the commit and run `bin/rake release` to release the new version to Rubygems
+- Go to GitHub releases and create a new release from the latest tag pasting the contents from CHANGELOG.md
+
+## Opal docs
+
+- Open `opal-docs` and run `bin/build v1.2.3`
+- Then run `bin/deploy`
+
+## Opal site
+
+- Open `opal.github.io` and update the opal version in the `Gemfile`
+- run `bin/build`
+- `git push` the latest changes
+
+## Opal CDN
+
+- Run `bin/release v1.2.3`
diff --git a/docs/roda-sprockets.md b/docs/roda-sprockets.md
new file mode 100644
index 00000000..92da57e8
--- /dev/null
+++ b/docs/roda-sprockets.md
@@ -0,0 +1,83 @@
+# Using Opal with Roda and Sprockets
+
+Add Opal-Sprockets and Roda-Sprockets to your Gemfile (or install using `gem`):
+
+```ruby
+# Gemfile
+gem "opal-sprockets"
+gem "roda-sprockets"
+gem "puma"
+```
+
+Roda-Sprockets uses `sprockets` as its default build system, so the asset-pipeline
+from rails can be mimicked here to map all ruby assets in the `/assets`
+path to be compiled using opal.
+
+## Basic Application
+
+```ruby
+# config.ru
+require 'roda'
+
+class App < Roda
+   plugin :sprockets, precompile: %w(application.js),
+                      prefix: %w(app/),
+                      opal: true,
+   plugin :public
+
+   route do |r|
+     r.public
+     r.sprockets
+
+     r.root do
+       <<~END
+         <!doctype html>
+         <html>
+           <head>
+             #{ javascript_tag 'application' }
+             #{ opal_require 'application' }
+           </head>
+         </html>
+       END
+     end
+   end     
+end
+
+run App.app
+
+```
+
+This creates a sprockets instance under the `/assets` path, serving Opal assets
+from `app/` with all the custom opal paths added automatically.
+
+This `env` object includes all the opal corelib and stdlib paths. To add
+any custom application directories, you must add them to the load path using
+`Opal.append_path` or adding them to the `prefix` parameter. You can now add
+an `app/application.rb` file into this added path with some basic content:
+
+```ruby
+# app/application.rb
+require 'opal'
+
+puts "wow, running ruby!"
+```
+
+It is necessary to require the opal corelib (seen in the `require` call) above.
+This just makes the Opal runtime and corelib available. Then it is possible to
+use all the corelib methods and classes, e.g. `Kernel#puts` as seen above.
+
+### Running Application
+
+As this is just a simple Roda application, you can run it:
+
+```sh
+$ bundle exec rackup
+```
+
+And point your browser towards `http://localhost:9292/` and view the browser
+debug console. You should see this message printed.
+
+### Extending the integration
+
+It's possible to extend this integration, for that please look into the
+[roda-sprockets documentation](https://github.com/hmdne/roda-sprockets)
diff --git a/docs/rspec.md b/docs/rspec.md
new file mode 100644
index 00000000..b4d0d239
--- /dev/null
+++ b/docs/rspec.md
@@ -0,0 +1,82 @@
+# RSpec
+
+`opal-rspec` allows opal to use rspec for running specs in javascript
+environments. It comes with built-in support for running rspec with
+standard web browser formatters. Also, async spec examples
+are supported to reflect browser usage of ruby applications.
+
+```ruby
+describe User do
+  it "can be created with a name" do
+    expect(User.new).to_not be_persisted
+  end
+end
+```
+
+### Installation
+
+Add the `opal-rspec` gem to your Gemfile:
+
+```ruby
+# Gemfile
+gem 'opal'
+gem 'opal-rspec'
+```
+
+## Running specs
+
+### In a Browser
+
+`opal-rspec` can use sprockets to build and serve specs over a simple rack server. Add the following to a `config.ru` file:
+
+```ruby
+# config.ru
+require 'bundler'
+Bundler.require
+
+sprockets_env = Opal::RSpec::SprocketsEnvironment.new
+run Opal::Server.new(sprockets: sprockets_env) { |s|
+  s.main = 'opal/rspec/sprockets_runner'
+  s.append_path 'spec'
+  s.debug = false
+}
+```
+
+Then run the rack server bundle exec rackup and visit `http://localhost:9292` in any web browser.
+
+## Async examples
+
+`opal-rspec` adds support for async specs to rspec. These specs are defined using
+`#async` instead of `#it`:
+
+```ruby
+describe MyClass do
+  # normal example
+  it 'does something' do
+    expect(:foo).to eq(:foo)
+  end
+
+  # async example
+  async 'does something else, too' do
+    # ...
+  end
+end
+```
+
+This just marks the example as running async. To actually handle the async result,
+you also need to use a `run_async` call inside some future handler:
+
+```ruby
+async 'HTTP requests should work' do
+  HTTP.get('/users/1.json') do |res|
+    run_async {
+      expect(res).to be_ok
+    }
+  end
+end
+```
+
+The block passed to `run_async` informs the runner that this spec is finished
+so it can move on. Any failures/expectations run inside this block will be run
+in the context of the example.
+
diff --git a/docs/sinatra.md b/docs/sinatra.md
new file mode 100644
index 00000000..57a25d1e
--- /dev/null
+++ b/docs/sinatra.md
@@ -0,0 +1,79 @@
+# Using Opal with Sinatra
+
+Add Opal-Sprockets to your Gemfile (or install using `gem`):
+
+```ruby
+# Gemfile
+source 'https://rubygems.org'
+
+gem 'sinatra'
+gem 'opal-sprockets'
+gem 'puma'
+```
+
+Opal-Sprockets uses `sprockets` as its default build system, so the asset-pipeline
+from rails can be mimicked here to map all ruby assets in the `/assets`
+path to be compiled using opal.
+
+## Basic Application
+
+```ruby
+# config.ru
+require 'opal-sprockets'
+require 'sinatra'
+
+opal = Opal::Sprockets::Server.new {|s|
+  s.append_path 'app'
+  s.main = 'application'
+  s.debug = ENV['RACK_ENV'] != 'production'
+}
+
+map '/assets' do
+  run opal.sprockets
+end
+
+get '/' do
+  <<-HTML
+    <!doctype html>
+    <html>
+      <head>
+        #{ Opal::Sprockets.javascript_include_tag('application', debug: opal.debug, sprockets: opal.sprockets, prefix: 'assets/' ) }
+      </head>
+    </html>
+  HTML
+end
+
+run Sinatra::Application
+```
+
+This creates a simple sprockets instance under the `/assets` path. Opal
+uses a set of load paths to compile assets using sprockets. The
+`Opal::Environment` instance is a simple subclass of `Sprockets::Environment`
+with all the custom opal paths added automatically.
+
+This `env` object includes all the opal corelib and stdlib paths. To add
+any custom application directories, you must add them to the load path using
+`env.append_path`. You can now add an `app/application.rb` file into this
+added path with some basic content:
+
+```ruby
+# app/application.rb
+require 'opal'
+
+puts "wow, running ruby!"
+```
+
+It is necessary to require the opal corelib (seen in the `require` call) above.
+This just makes the Opal runtime and corelib available. Then it is possible to
+use all the corelib methods and classes, e.g. `Kernel#puts` as seen above.
+
+### Running Application
+
+As this is just a simple sinatra application, you can run it:
+
+```sh
+$ bundle exec rackup
+```
+
+And point your browser towards `http://localhost:9292/` and view the browser
+debug console. You should see this message printed.
diff --git a/docs/source_maps.md b/docs/source_maps.md
new file mode 100644
index 00000000..b2550ea8
--- /dev/null
+++ b/docs/source_maps.md
@@ -0,0 +1,48 @@
+# Source maps
+
+Source maps are available on most environments we support.
+
+#### Processor `source_map_enabled` flag
+To enable sourcemaps in the Sprockets processor you need to turn on the relative flag:
+
+```ruby
+Opal::Config.source_map_enabled = true # default
+```
+
+
+#### Sprockets debug mode
+
+The source maps only work with Sprockets in debug mode - this is a limitation of Sprockets.
+
+## Enable source maps
+
+### Rails
+
+Rails has debug mode already enabled in development environment with the following line from `config/environments/development.rb`:
+
+```ruby
+# Debug mode disables concatenation and preprocessing of assets.
+# This option may cause significant delays in view rendering with a large
+# number of complex assets.
+config.assets.debug = true
+```
+
+`opal-rails` also enables sourcemaps in development so with the standard setup you ready to go.
+
+
+### Sinatra
+
+You can add `Opal::Server` as in the official example: [sinatra/config.ru](https://github.com/opal/opal/blob/master/examples/sinatra/config.ru).
+
+### Opal::Server
+
+`Opal::Server` (which is based on Sprockets) implements sourcemaps and can be used alone or with `Rack::Cascade` in conjunction with other apps.
+
+### Opal::SimpleServer
+
+Like `Opal::Server`, `Opal::SimpleServer` (which isn't based on Sprockets) implements sourcemaps properly.
+
+### Opal::Builder
+
+`Opal::Builder` is a bit lower level and doesn't support source maps by itself. It requires you to call in a specific method to generate them yourself.
+
diff --git a/docs/static_applications.md b/docs/static_applications.md
new file mode 100644
index 00000000..f7eefdbe
--- /dev/null
+++ b/docs/static_applications.md
@@ -0,0 +1,63 @@
+# Static Building
+
+`opal` makes it easy to build static opal applications. Opal uses internal load
+paths to make it easy to handle resolving requirements during building. `opal`
+forms the basis of Rails support, so anything you can do there, you can do
+standalone as well.
+
+## Overview
+
+First, install `opal` adding them to a `Gemfile`:
+
+```ruby
+# Gemfile
+gem "opal"
+```
+
+Next, we want to add our main app code. Keep all opal code inside `app/`
+directory, and edit `app/application.rb`:
+
+```ruby
+# app/application.rb
+require "opal"
+
+puts "Wow, running opal!"
+```
+
+You will notice the `require "opal"` line which will automatically include the
+opal runtime and corelib into our output, giving us access to the `puts()`
+method.
+
+To build this, we need the rake task to add our
+`app/` directory to the load path, and then to build our target file
+`application.rb` which will be found because it is inside our added load path.
+
+```ruby
+# Rakefile
+require 'opal'
+
+desc "Build our app to build.js"
+task :build do
+  Opal.append_path "app"
+  File.binwrite "build.js", Opal::Builder.build("application").to_s
+end
+```
+
+Now, if you run `rake build` you will get the `build.js` output file with our
+application compiled, with the opal runtime included as well.
+
+To run the application, lets create a very simple html file:
+
+```html
+<!DOCTYPE html>
+<html>
+  <head>
+    <script src="build.js"></script>
+  </head>
+  <body>
+  </body>
+</html>
+```
+
+Now, open this html file and check the browsers console. You should see our
+message printed in the console.
diff --git a/docs/templates.md b/docs/templates.md
new file mode 100644
index 00000000..5e5c89eb
--- /dev/null
+++ b/docs/templates.md
@@ -0,0 +1,150 @@
+# Templates with Opal
+
+Opal includes support for running erb templates on the client. Haml templates
+can also be used via the `opal-haml` gem.
+
+## Basic Templates
+
+If you require `template.rb` from the stdlib, then all compiled templates will
+be available on the `Template` object. Each compiled template will be an
+instance of `Template`, which provides a basic standard rendering api to make
+rendering a uniform method on the client.
+
+For example, to access a template named `user`:
+
+```ruby
+require 'template'
+
+template = Template['user']
+context  = User.new('Ford Prefect')
+
+puts template.render(context)
+# => "<div>...</div>"
+```
+
+`#render()` will run the template in the given context, and return the result
+as a string. This is usually a html string, but it can be used for any dynamic
+content.
+
+### Registered Templates
+
+You can get a quick list of all registered templates using `.paths`:
+
+```ruby
+Template.paths
+# => [#<Template: 'views/user'>, #<Template: 'login'>]
+```
+
+These names are the keys used to access a template:
+
+```ruby
+Template['login']
+# => #<Template: 'login'>
+```
+
+## Haml templates
+
+`opal-haml` allows `.haml` templates to be compiled, just like opal compiles
+ruby code, ready to run on the client.
+
+To get started, add to your Gemfile:
+
+```ruby
+# Gemfile
+gem 'opal'
+gem 'opal-haml'
+```
+
+`opal-haml` simply registers the `.haml` template to be handled under sprockets.
+This means, that you can simply `require()` a haml template in your code.
+
+Lets say you have the following simple opal app:
+
+```ruby
+# app/application.rb
+require 'opal'
+
+class User < Struct.new(:name, :age)
+end
+```
+
+We want to create an instance of the `User` class and render it using a haml
+template. Lets first create that template as `app/views/user.haml`:
+
+```haml
+-# app/views/user.haml
+.row
+  .col-md-6
+    = self.name
+  .col-md-6
+    = self.age
+```
+
+You are nearly ready to go. Lets create a user instance and render the template
+in the context of that user:
+
+```ruby
+# app/application.rb
+require 'opal'
+require 'views/user'
+
+class User < Struct.new(:name, :age)
+end
+
+ford = User.new('Ford Prefect', 42)
+template = Template['views/user']
+
+puts template.render(ford)
+```
+
+Note, when requiring haml templates you do not need to specify the `.haml`
+extension. This code will print the rendered html to the console. If you
+check it out, you should see it compiled into something like the following:
+
+```html
+<div class="row">
+  <div class="col-md-6">
+    Ford Prefect
+  </div>
+  <div class="col-md-6">
+    42
+  </div>
+</div>
+```
+
+## ERB Templates
+
+Support for `erb` templates is built in directly to the opal gem and stdlib.
+There is one caveat though when working with sprockets - it must have the
+`.opalerb` file extension, instead of `.erb`. This is because sprockets has a
+built in handler for `.erb` files.
+
+If we have the same user class as above, create an `app/views/user.opalerb`
+file:
+
+```erb
+<!-- app/views/user.opalerb -->
+<div class="row">
+  <div class="col-md-3"><%= self.name %></div>
+</div>
+```
+
+Again, you must then require the template (without the `.opalerb` extension):
+
+```ruby
+# app/application.rb
+require 'opal'
+require 'views/user'
+```
+
+And then you can access and render the template:
+
+```ruby
+# app/application.rb
+
+template = Template['views/user']
+user = User.new('Ford Prefect')
+
+puts template.render(user)
+# => "<div class="row">...</div>"
+```
diff --git a/docs/unsupported_features.md b/docs/unsupported_features.md
new file mode 100644
index 00000000..979ef360
--- /dev/null
+++ b/docs/unsupported_features.md
@@ -0,0 +1,33 @@
+# Unsupported Features
+
+Opal does not support some language/runtime features of ruby. These are documented here when possible, as well as the reasons why they are not supported.
+
+#### Mutable Strings ####
+
+For performance and ease of runtime features, all strings in Opal are immutable, i.e. `#<<`, `#gsub!`, etc. do not exist. Also, symbols are just strings. There is no class, runtime or feature difference between Symbols and Strings. Their syntaxes can be used interchangeably.
+
+#### Regexp differences ####
+
+We are using JavaScript regular expressions. While we do translate a few of Ruby specific instructions like `\A` or `\z`, there are a lot of incompatibilities that you should be aware of - for example `$` and `^` don't match newlines like they do in Ruby. Support for features like named matches or lookahead/lookbehind is dependent on the JavaScript environment support for those. To support everything, we would need to [compile in the entire Ruby's regular expression engine](https://opalrb.com/blog/2021/06/26/webassembly-and-advanced-regexp-with-opal/) which is unfeasible at the current time.
+
+#### Integer / Float difference ####
+
+In Opal, both integers and floats belong to same class `Number` (using JavaScript native numbers). So `1 / 4` is `0.25` (not `0`) and `4.0 / 2` is `2` (not `2.0`).
+
+`Number` is a subclass of `Numeric`, like `Complex` and `Rational`.
+
+#### Encodings ####
+
+Encodings only have a very small implementation inside Opal.
+
+#### Threads ####
+
+JavaScript does not have a native `Thread` implementation, so they are not present inside Opal. There is a placeholder `Thread` class just to provide some small level of compatibility with libraries that expect it. It does not have any function.
+
+#### Frozen Objects ####
+
+Opal does not currently support frozen objects, but has placeholder methods to prevent other libraries breaking when expecting these methods. Opal could support frozen objects in the future once a similar implementation becomes available across JavaScript runtimes.
+
+#### Private, Public and Protected methods ####
+
+All methods in Opal are defined as `public` to avoid additional runtime overhead. `Module#private` and `Module#protected` exist as just placeholder methods and are no-op methods.
diff --git a/docs/upgrading.md b/docs/upgrading.md
new file mode 100644
index 00000000..5af0f585
--- /dev/null
+++ b/docs/upgrading.md
@@ -0,0 +1,22 @@
+# Upgrading from v0.8 to v0.9
+
+## `Opal::Processor.load_asset_code` deprecated
+
+`Opal::Processor.load_asset_code(sprockets, name)` has been deprecated in favor of `Opal::Sprockets.load_asset(name, sprockets)`.
+
+## `$console.log` instead of `pp`
+
+Previously `pp` would have forwarded the object to JS own `console.log` but now just prints calling `.inspect` on it similarly to what `p` does.
+
+```ruby
+require 'pp'
+pp a: 1, b: {c: 3}
+```
+
+Now:
+
+```ruby
+require 'console'
+$console.log a: 1, b: {c: 3}
+```
+
diff --git a/docs/using_sprockets.md b/docs/using_sprockets.md
new file mode 100644
index 00000000..edb4b3a6
--- /dev/null
+++ b/docs/using_sprockets.md
@@ -0,0 +1,92 @@
+# Opal & Sprockets
+
+The `opal-sprockets` gem adds sprockets support to Opal, providing a simple
+`Opal::Sprockets::server` class to make it easy to get a rack server up and 
+running for trying out opal. This server will automatically recompile ruby 
+sources when they change, meaning you just need to refresh your page to autorun.
+
+## Getting setup
+
+Add `rack` & `opal-sprockets` to your `Gemfile`:
+
+```ruby
+#Gemfile
+source 'https://rubygems.org'
+
+gem 'rack'
+gem 'opal-sprockets'
+```
+
+And install with `bundle install`.
+
+We need a directory to hold our opal code, so create `app/` and add a simple
+demo script to `app/application.rb`:
+
+```ruby
+# app/application.rb
+require 'opal'
+
+puts "hello world"
+```
+
+
+If we do not provide an HTML index, sprockets will generate one automatically; 
+however, it is often useful to override the default with a custom `erb` file: 
+
+```html
+<%# index.erb %>
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <title>opal server example</title>
+    <%= javascript_include_tag @server.main %>
+  </head>
+  <body>
+    you've reached the custom index!
+  </body>
+</html>
+```
+
+## Using Opal::Server
+
+`Opal::Server` can be run like any rack app, so just add a `config.ru` file:
+
+```ruby
+# config.ru
+require 'opal-sprockets'
+
+run Opal::Server.new { |s|
+  s.append_path 'app'
+
+  s.main = 'application'
+
+  # override the default index with our custom index
+  s.index_path = 'index.erb'
+}
+```
+
+This rack app simply adds our `app/` directory to opal load path, and sets our
+main file to `application`, which will be found inside `app/`.
+
+## Running the app
+
+Run `bundle exec rackup` and visit the page `http://localhost:9292` in any
+browser. Observe the console to see the printed statement.
+
+You can just change `app/application.rb` and refresh the page to see any changes.
+
+
+## Using an existing `sprockets` instance
+
+We only need to append Opal paths to the existing sprockets instance.
+
+```ruby
+require 'sprockets'
+environment = Sprockets::Environment.new
+
+require 'opal'
+Opal.paths.each do |path|
+  environment.append_path path
+end
+```
diff --git a/examples/rack-esm/.gitignore b/examples/rack-esm/.gitignore
new file mode 100644
index 00000000..a9a5aecf
--- /dev/null
+++ b/examples/rack-esm/.gitignore
@@ -0,0 +1 @@
+tmp
diff --git a/examples/rack-esm/Gemfile b/examples/rack-esm/Gemfile
new file mode 100644
index 00000000..24b6b40f
--- /dev/null
+++ b/examples/rack-esm/Gemfile
@@ -0,0 +1,5 @@
+source 'https://rubygems.org'
+
+gem 'rack'
+gem 'opal', :path => '../../'
+gem 'puma'
\ No newline at end of file
diff --git a/examples/rack-esm/app/application.rb b/examples/rack-esm/app/application.rb
new file mode 100644
index 00000000..8aeefa03
--- /dev/null
+++ b/examples/rack-esm/app/application.rb
@@ -0,0 +1,27 @@
+require 'opal'
+require 'user'
+require 'opal/platform'
+
+module MyApp
+  class Application
+    def initialize
+      @user = User.new('Bob')
+    end
+
+    def title
+      "#{@user.name} is #{:not unless @user.authenticated?} authenticated"
+    end
+  end
+end
+
+$app = MyApp::Application.new
+
+require 'native'
+
+$$[:document][:title] = "#{$app.title}"
+
+bill = User.new('Bill')
+
+$$.alert "The user is named #{bill.name}."
+
+bill.authenticated?
diff --git a/examples/rack-esm/app/user.rb b/examples/rack-esm/app/user.rb
new file mode 100644
index 00000000..c138ea55
--- /dev/null
+++ b/examples/rack-esm/app/user.rb
@@ -0,0 +1,24 @@
+class User
+  def initialize(name)
+    puts "wow"
+    @name = name
+  end
+
+  attr_reader :name
+
+  def authenticated?
+    if admin? or special_permission?
+      true
+    else
+      raise "not authenticated"
+    end
+  end
+
+  def admin?
+    @name == 'Bob'
+  end
+
+  def special_permission?
+    false
+  end
+end
diff --git a/examples/rack-esm/config.ru b/examples/rack-esm/config.ru
new file mode 100644
index 00000000..ad5d1d0b
--- /dev/null
+++ b/examples/rack-esm/config.ru
@@ -0,0 +1,25 @@
+require 'bundler'
+Bundler.require
+
+# Instructions: bundle in this directory
+# then run `bundle exec rackup` to start the server
+# and browse to http://localhost:9292
+
+# a very small application that just tries to authenticate a user and fails
+# it just writes to the console in the browser (no visible html)
+
+# with gems like opal-jquery or opal-browser you could manipulate the dom directly
+
+# the directory where the code is (add to opal load path )
+Opal.append_path 'app'
+
+# Enable ESM
+Opal::Config.esm = true
+
+run Opal::SimpleServer.new { |s|
+  # the name of the ruby file to load. To use more files they must be required from here (see app)
+  s.main = 'application'
+  # need to set the index explicitly for opal server to pick it up
+  s.index_path = 'index.html.erb'
+}
+
diff --git a/examples/rack-esm/index.html.erb b/examples/rack-esm/index.html.erb
new file mode 100644
index 00000000..d2ec513b
--- /dev/null
+++ b/examples/rack-esm/index.html.erb
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <title>opal-sprockets demo</title>
+
+    <%= javascript_include_tag 'application' %>
+  </head>
+  <body>
+  </body>
+</html>
diff --git a/examples/rack/.gitignore b/examples/rack/.gitignore
new file mode 100644
index 00000000..a9a5aecf
--- /dev/null
+++ b/examples/rack/.gitignore
@@ -0,0 +1 @@
+tmp
diff --git a/examples/rack/Gemfile b/examples/rack/Gemfile
new file mode 100644
index 00000000..24b6b40f
--- /dev/null
+++ b/examples/rack/Gemfile
@@ -0,0 +1,5 @@
+source 'https://rubygems.org'
+
+gem 'rack'
+gem 'opal', :path => '../../'
+gem 'puma'
\ No newline at end of file
diff --git a/examples/rack/app/application.rb b/examples/rack/app/application.rb
new file mode 100644
index 00000000..8aeefa03
--- /dev/null
+++ b/examples/rack/app/application.rb
@@ -0,0 +1,27 @@
+require 'opal'
+require 'user'
+require 'opal/platform'
+
+module MyApp
+  class Application
+    def initialize
+      @user = User.new('Bob')
+    end
+
+    def title
+      "#{@user.name} is #{:not unless @user.authenticated?} authenticated"
+    end
+  end
+end
+
+$app = MyApp::Application.new
+
+require 'native'
+
+$$[:document][:title] = "#{$app.title}"
+
+bill = User.new('Bill')
+
+$$.alert "The user is named #{bill.name}."
+
+bill.authenticated?
diff --git a/examples/rack/app/user.rb b/examples/rack/app/user.rb
new file mode 100644
index 00000000..c138ea55
--- /dev/null
+++ b/examples/rack/app/user.rb
@@ -0,0 +1,24 @@
+class User
+  def initialize(name)
+    puts "wow"
+    @name = name
+  end
+
+  attr_reader :name
+
+  def authenticated?
+    if admin? or special_permission?
+      true
+    else
+      raise "not authenticated"
+    end
+  end
+
+  def admin?
+    @name == 'Bob'
+  end
+
+  def special_permission?
+    false
+  end
+end
diff --git a/examples/rack/config.ru b/examples/rack/config.ru
new file mode 100644
index 00000000..f9003b80
--- /dev/null
+++ b/examples/rack/config.ru
@@ -0,0 +1,22 @@
+require 'bundler'
+Bundler.require
+
+# Instructions: bundle in this directory
+# then run `bundle exec rackup` to start the server
+# and browse to http://localhost:9292
+
+# a very small application that just tries to authenticate a user and fails
+# it just writes to the console in the browser (no visible html)
+
+# with gems like opal-jquery or opal-browser you could manipulate the dom directly
+
+# the directory where the code is (add to opal load path )
+Opal.append_path 'app'
+
+run Opal::SimpleServer.new { |s|
+  # the name of the ruby file to load. To use more files they must be required from here (see app)
+  s.main = 'application'
+  # need to set the index explicitly for opal server to pick it up
+  s.index_path = 'index.html.erb'
+}
+
diff --git a/examples/rack/index.html.erb b/examples/rack/index.html.erb
new file mode 100644
index 00000000..d2ec513b
--- /dev/null
+++ b/examples/rack/index.html.erb
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <title>opal-sprockets demo</title>
+
+    <%= javascript_include_tag 'application' %>
+  </head>
+  <body>
+  </body>
+</html>
diff --git a/examples/sinatra/Gemfile b/examples/sinatra/Gemfile
new file mode 100644
index 00000000..727002a2
--- /dev/null
+++ b/examples/sinatra/Gemfile
@@ -0,0 +1,6 @@
+source 'https://rubygems.org'
+
+gem 'opal', :path => '../..'
+gem 'opal-sprockets'
+gem 'puma' # webrick has a bug with safari
+gem 'sinatra'
diff --git a/examples/sinatra/app/application.rb b/examples/sinatra/app/application.rb
new file mode 100644
index 00000000..28e8f878
--- /dev/null
+++ b/examples/sinatra/app/application.rb
@@ -0,0 +1,9 @@
+require 'opal'
+
+def alert(msg)
+  `alert(msg)`
+  raise "an example exception with source-map powered backtrace"
+end
+
+alert "Hi there!"
+
diff --git a/examples/sinatra/config.ru b/examples/sinatra/config.ru
new file mode 100644
index 00000000..796886e9
--- /dev/null
+++ b/examples/sinatra/config.ru
@@ -0,0 +1,28 @@
+require 'opal/sprockets'
+require 'sinatra'
+
+opal = Opal::Sprockets::Server.new {|s|
+  s.append_path 'app'
+  s.main = 'application'
+}
+
+sprockets   = opal.sprockets
+prefix      = '/assets'
+
+map prefix do
+  run sprockets
+end
+
+get '/' do
+  <<-HTML
+    <!doctype html>
+    <html>
+      <head>
+        <meta charset="utf-8">
+        #{::Opal::Sprockets.javascript_include_tag('application', sprockets: sprockets, prefix: prefix, debug: true)}
+      </head>
+    </html>
+  HTML
+end
+
+run Sinatra::Application
diff --git a/exe/opal b/exe/opal
new file mode 100755
index 00000000..a049475d
--- /dev/null
+++ b/exe/opal
@@ -0,0 +1,31 @@
+#!/usr/bin/env ruby
+
+# Error codes are taken from /usr/include/sysexits.h
+
+OriginalARGV = ARGV.dup
+
+require 'opal/cli_options'
+options = Opal::CLIOptions.new
+begin
+  options.parse!
+rescue OptionParser::InvalidOption => e
+  $stderr.puts "#{$0}: #{e.message} (-h will show valid options)"
+  exit 64
+end
+
+require 'opal/cli'
+options_hash = options.options
+options_hash.merge!(
+  file:     ARGF.file,
+  filename: ARGF.filename,
+  argv:     ARGV.dup
+) unless options_hash[:lib_only]
+cli = Opal::CLI.new options_hash
+
+begin
+  cli.run
+  exit cli.exit_status || 0
+rescue Opal::CliRunners::RunnerError => e
+  $stderr.puts e.message
+  exit 72
+end
diff --git a/exe/opal-build b/exe/opal-build
new file mode 100755
index 00000000..499de4fd
--- /dev/null
+++ b/exe/opal-build
@@ -0,0 +1,77 @@
+#!/usr/bin/env ruby
+
+require 'optparse'
+
+module Opal
+  class BuilderOptions < OptionParser
+    def initialize
+      @options = {}
+
+      super do |opts|
+        opts.banner = 'Usage: opal-build [options] -- [libname]'
+
+        opts.separator ''
+        opts.separator 'Options:'
+
+        opts.on("-h", "--help", "Show this message") do
+          puts opts
+          exit
+        end
+
+        opts.on('-g', '--gem GEM_NAME', String,
+                'Adds the specified GEM_NAME lib dir to Opal\'s load path.',
+                'E.g.: opal-build --gem erubis -- erubis`',
+                'Will build erubis.rb from the regular "erubis" gem') do |g|
+          options[:gems] ||= []
+          options[:gems] << g
+        end
+
+        opts.on('-s', '--stub STUB', String) do |stub|
+          options[:stubs] ||= []
+          options[:stubs] << stub
+        end
+
+        opts.on('-r', '--require LIBRARY', String,
+                'Require the library before executing your script',
+                'E.g.: opal-build --require opal-browser browser`',
+                'Will build browser.rb from the Opal gem opal-browser') do |library|
+          options[:requires] ||= []
+          options[:requires] << library
+        end
+
+        opts.on('-o', '--output FILE', String,
+                'Write the built lib to a file (defaults to STDOUT)') do |file|
+          options[:output] = file
+        end
+      end
+    end
+
+    attr_reader :options
+  end
+end
+
+option_parser = Opal::BuilderOptions.new
+option_parser.parse!
+
+if ARGV.empty?
+  puts option_parser
+else
+  require 'opal'
+  options = option_parser.options
+
+  if options[:gems]
+    require 'rubygems'
+    options[:gems].each { |gem_name| Opal.use_gem gem_name }
+  end
+
+  if options[:requires]
+    options[:requires].each { |required_lib| require required_lib }
+  end
+
+  lib_name = ARGV.first
+
+  output = options[:output] ? File.open(options[:output], 'w') : $stdout
+  output.puts Opal::Builder.build(lib_name.dup.untaint)
+end
+
+
diff --git a/exe/opal-repl b/exe/opal-repl
new file mode 100755
index 00000000..d6724ad3
--- /dev/null
+++ b/exe/opal-repl
@@ -0,0 +1,3 @@
+#!/usr/bin/env ruby
+
+exec "#{__dir__}/opal", '--repl', *ARGV
diff --git a/lib/opal.rb b/lib/opal.rb
new file mode 100644
index 00000000..dbe7a628
--- /dev/null
+++ b/lib/opal.rb
@@ -0,0 +1,3 @@
+# frozen_string_literal: true
+
+require 'opal/requires'
diff --git a/lib/opal/ast/builder.rb b/lib/opal/ast/builder.rb
new file mode 100644
index 00000000..a5143a51
--- /dev/null
+++ b/lib/opal/ast/builder.rb
@@ -0,0 +1,16 @@
+# frozen_string_literal: true
+
+require 'opal/ast/node'
+require 'parser/ruby31'
+
+module Opal
+  module AST
+    class Builder < ::Parser::Builders::Default
+      self.emit_lambda = true
+
+      def n(type, children, location)
+        ::Opal::AST::Node.new(type, children, location: location)
+      end
+    end
+  end
+end
diff --git a/lib/opal/ast/node.rb b/lib/opal/ast/node.rb
new file mode 100644
index 00000000..c1b67c95
--- /dev/null
+++ b/lib/opal/ast/node.rb
@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+require 'ast'
+require 'parser/ast/node'
+
+module Opal
+  module AST
+    class Node < ::Parser::AST::Node
+      attr_reader :meta
+
+      def assign_properties(properties)
+        if meta = properties[:meta]
+          meta = meta.dup if meta.frozen?
+          @meta.merge!(meta)
+        else
+          @meta ||= {}
+        end
+
+        super
+      end
+
+      def line
+        loc.line if loc
+      end
+
+      def column
+        loc.column if loc
+      end
+    end
+  end
+end
diff --git a/lib/opal/builder.rb b/lib/opal/builder.rb
new file mode 100644
index 00000000..3c9c8a89
--- /dev/null
+++ b/lib/opal/builder.rb
@@ -0,0 +1,264 @@
+# frozen_string_literal: true
+
+require 'opal/path_reader'
+require 'opal/paths'
+require 'opal/config'
+require 'opal/cache'
+require 'set'
+
+module Opal
+  class Builder
+    # The registered processors
+    def self.processors
+      @processors ||= []
+    end
+
+    # All the extensions supported by registered processors
+    def self.extensions
+      @extensions ||= []
+    end
+
+    # @public
+    # Register a builder processor and the supported extensions.
+    # A processor will respond to:
+    #
+    # ## `#requires`
+    # An array of string containing the logic paths of required assets
+    #
+    # ## `#required_trees`
+    # An array of string containing the logic paths of required directories
+    #
+    # ## `#autoloads`
+    # An array of entities that are autoloaded and their compile-time load failure can
+    # be safely ignored
+    #
+    # ## `#to_s`
+    # The processed source
+    #
+    # ## `#source_map`
+    # An instance of `::Opal::SourceMap::File` representing the processd asset's source
+    # map.
+    #
+    # ## `.new(source, filename, compiler_options)`
+    # The processor will be instantiated passing:
+    # - the unprocessed source
+    # - the asset's filename
+    # - Opal's compiler options
+    #
+    # ## `.match?(path)`
+    # The processor is able to recognize paths suitable for its type of
+    # processing.
+    #
+    def self.register_processor(processor, processor_extensions)
+      return if processors.include?(processor)
+      processors << processor
+      processor_extensions.each { |ext| extensions << ext }
+    end
+
+
+
+    class MissingRequire < LoadError
+    end
+
+    class ProcessorNotFound < LoadError
+    end
+
+    def initialize(options = nil)
+      (options || {}).each_pair do |k, v|
+        public_send("#{k}=", v)
+      end
+
+      @stubs                    ||= []
+      @preload                  ||= []
+      @processors               ||= ::Opal::Builder.processors
+      @path_reader              ||= PathReader.new(Opal.paths, extensions.map { |e| [".#{e}", ".js.#{e}"] }.flatten)
+      @prerequired              ||= []
+      @compiler_options         ||= Opal::Config.compiler_options
+      @missing_require_severity ||= Opal::Config.missing_require_severity
+      @cache                    ||= Opal.cache
+
+      @processed = []
+    end
+
+    def self.build(*args, &block)
+      new.build(*args, &block)
+    end
+
+    def build(path, options = {})
+      build_str(source_for(path), path, options)
+    end
+
+    # Retrieve the source for a given path the same way #build would do.
+    def source_for(path)
+      read(path, false)
+    end
+
+    def build_str(source, rel_path, options = {})
+      return if source.nil?
+      abs_path = expand_path(rel_path)
+      rel_path = expand_ext(rel_path)
+      asset = processor_for(source, rel_path, abs_path, false, options)
+      requires = preload + asset.requires + tree_requires(asset, abs_path)
+      requires.map { |r| process_require(r, asset.autoloads, options) }
+      processed << asset
+      self
+    rescue MissingRequire => error
+      raise error, "A file required by #{rel_path.inspect} wasn't found.\n#{error.message}", error.backtrace
+    end
+
+    def build_require(path, options = {})
+      process_require(path, [], options)
+    end
+
+    def initialize_copy(other)
+      super
+      @stubs = other.stubs.dup
+      @preload = other.preload.dup
+      @processors = other.processors.dup
+      @path_reader = other.path_reader.dup
+      @prerequired = other.prerequired.dup
+      @compiler_options = other.compiler_options.dup
+      @missing_require_severity = other.missing_require_severity.to_sym
+      @processed = other.processed.dup
+    end
+
+    def to_s
+      processed.map(&:to_s).join("\n")
+    end
+
+    def source_map
+      ::Opal::SourceMap::Index.new(processed.map(&:source_map), join: "\n")
+    end
+
+    def append_paths(*paths)
+      path_reader.append_paths(*paths)
+    end
+
+    include UseGem
+
+    attr_reader :processed
+
+    attr_accessor :processors, :path_reader, :stubs, :prerequired, :preload,
+      :compiler_options, :missing_require_severity, :cache
+
+    private
+
+    def tree_requires(asset, asset_path)
+      dirname = asset_path.to_s.empty? ? Pathname.pwd : Pathname(asset_path).expand_path.dirname
+      abs_base_paths = path_reader.paths.map { |p| File.expand_path(p) }
+
+      asset.required_trees.flat_map do |tree|
+        abs_tree_path = dirname.join(tree).expand_path.to_s
+        abs_base_path = abs_base_paths.find { |p| abs_tree_path.start_with?(p) }
+
+        if abs_base_path
+          abs_base_path = Pathname(abs_base_path)
+          entries_glob  = Pathname(abs_tree_path).join('**', "*{.js,}.{#{extensions.join ','}}")
+
+          Pathname.glob(entries_glob).map { |file| file.relative_path_from(abs_base_path).to_s }
+        else
+          [] # the tree is not part of any known base path
+        end
+      end
+    end
+
+    def processor_for(source, rel_path, abs_path, autoload, options)
+      processor = processors.find { |p| p.match? abs_path }
+
+      if !processor && !autoload
+        raise(ProcessorNotFound, "can't find processor for rel_path: " \
+                                 "#{rel_path.inspect}, "\
+                                 "abs_path: #{abs_path.inspect}, "\
+                                 "source: #{source.inspect}, "\
+                                 "processors: #{processors.inspect}"
+             )
+      end
+
+      options = options.merge(cache: cache)
+
+      processor.new(source, rel_path, @compiler_options.merge(options))
+    end
+
+    def read(path, autoload)
+      path_reader.read(path) || begin
+        print_list = ->(list) { "- #{list.join("\n- ")}\n" }
+        message = "can't find file: #{path.inspect} in:\n" +
+                  print_list[path_reader.paths] +
+                  "\nWith the following extensions:\n" +
+                  print_list[path_reader.extensions] +
+                  "\nAnd the following processors:\n" +
+                  print_list[processors]
+
+        unless autoload
+          case missing_require_severity
+          when :error   then raise MissingRequire, message
+          when :warning then warn message
+          when :ignore  then # noop
+          end
+        end
+
+        nil
+      end
+    end
+
+    def process_require(rel_path, autoloads, options)
+      return if prerequired.include?(rel_path)
+      return if already_processed.include?(rel_path)
+      already_processed << rel_path
+
+      autoload = autoloads.include? rel_path
+
+      source = stub?(rel_path) ? '' : read(rel_path, autoload)
+
+      # The handling is delegated to the runtime
+      return if source.nil?
+
+      abs_path = expand_path(rel_path)
+      rel_path = expand_ext(rel_path)
+      asset = processor_for(source, rel_path, abs_path, autoload, options.merge(requirable: true))
+      process_requires(
+        rel_path,
+        asset.requires + tree_requires(asset, abs_path),
+        asset.autoloads,
+        options
+      )
+      processed << asset
+    end
+
+    def expand_ext(path)
+      abs_path = path_reader.expand(path)
+
+      if abs_path
+        File.join(
+          File.dirname(path),
+          File.basename(abs_path)
+        )
+      else
+        path
+      end
+    end
+
+    def expand_path(path)
+      return if stub?(path)
+      (path_reader.expand(path) || File.expand_path(path)).to_s
+    end
+
+    def process_requires(rel_path, requires, autoloads, options)
+      requires.map { |r| process_require(r, autoloads, options) }
+    rescue MissingRequire => error
+      raise error, "A file required by #{rel_path.inspect} wasn't found.\n#{error.message}", error.backtrace
+    end
+
+    def already_processed
+      @already_processed ||= Set.new
+    end
+
+    def stub?(path)
+      stubs.include?(path)
+    end
+
+    def extensions
+      ::Opal::Builder.extensions
+    end
+  end
+end
diff --git a/lib/opal/builder_processors.rb b/lib/opal/builder_processors.rb
new file mode 100644
index 00000000..22b2ca8f
--- /dev/null
+++ b/lib/opal/builder_processors.rb
@@ -0,0 +1,146 @@
+# frozen_string_literal: true
+
+require 'opal/compiler'
+require 'opal/erb'
+
+module Opal
+  module BuilderProcessors
+    class Processor
+      def initialize(source, filename, options = {})
+        source += "\n" unless source.end_with?("\n")
+        @source, @filename, @options = source, filename, options.dup
+        @cache = @options.delete(:cache) { Opal.cache }
+        @requires = []
+        @required_trees = []
+        @autoloads = []
+      end
+      attr_reader :source, :filename, :options, :requires, :required_trees, :autoloads
+
+      def to_s
+        source.to_s
+      end
+
+      class << self
+        attr_reader :extensions
+
+        def handles(*extensions)
+          @extensions = extensions
+          matches = extensions.join('|')
+          matches = "(#{matches})" unless extensions.size == 1
+          @match_regexp = Regexp.new "\\.#{matches}#{REGEXP_END}"
+
+          ::Opal::Builder.register_processor(self, extensions)
+          nil
+        end
+
+        def match?(other)
+          other.is_a?(String) && other.match(match_regexp)
+        end
+
+        def match_regexp
+          @match_regexp || raise(NotImplementedError)
+        end
+      end
+
+      def mark_as_required(filename)
+        "Opal.loaded([#{filename.to_s.inspect}]);"
+      end
+    end
+
+    class JsProcessor < Processor
+      handles :js
+
+      ManualFragment = Struct.new(:line, :column, :code, :source_map_name)
+
+      def source_map
+        @source_map ||= begin
+          manual_fragments = source.each_line.with_index.map do |line_source, index|
+            column = line_source.index(/\S/)
+            line = index + 1
+            ManualFragment.new(line, column, line_source, nil)
+          end
+
+          ::Opal::SourceMap::File.new(manual_fragments, filename, source)
+        end
+      end
+
+      def source
+        @source.to_s + mark_as_required(@filename)
+      end
+    end
+
+    class RubyProcessor < Processor
+      handles :rb, :opal
+
+      def source
+        compiled.result
+      end
+
+      def source_map
+        compiled.source_map
+      end
+
+      def compiled
+        @compiled ||= Opal::Cache.fetch(@cache, cache_key) do
+          compiler = compiler_for(@source, file: @filename)
+          compiler.compile
+          compiler
+        end
+      end
+
+      def cache_key
+        [self.class, @filename, @source, @options]
+      end
+
+      def compiler_for(source, options = {})
+        ::Opal::Compiler.new(source, @options.merge(options))
+      end
+
+      def requires
+        compiled.requires
+      end
+
+      def required_trees
+        compiled.required_trees
+      end
+
+      def autoloads
+        compiled.autoloads
+      end
+
+      # Also catch a files with missing extensions and nil.
+      def self.match?(other)
+        super || File.extname(other.to_s) == ''
+      end
+    end
+
+    class OpalERBProcessor < RubyProcessor
+      handles :opalerb
+
+      def initialize(*args)
+        super
+        @source = prepare(@source, @filename)
+      end
+
+      def requires
+        ['erb'] + super
+      end
+
+      private
+
+      def prepare(source, path)
+        ::Opal::ERB::Compiler.new(source, path).prepared_source
+      end
+    end
+
+    class ERBProcessor < Processor
+      handles :erb
+
+      def source
+        result = ::ERB.new(@source.to_s).result
+        module_name = ::Opal::Compiler.module_name(@filename)
+        "Opal.modules[#{module_name.inspect}] = function() {#{result}};"
+      end
+    end
+  end
+end
diff --git a/lib/opal/cache.rb b/lib/opal/cache.rb
new file mode 100644
index 00000000..7a5d02ce
--- /dev/null
+++ b/lib/opal/cache.rb
@@ -0,0 +1,71 @@
+# frozen_string_literal: true
+
+require 'opal/paths'
+require 'digest/sha2' unless RUBY_ENGINE == 'opal'
+
+if RUBY_ENGINE != 'opal'
+  require 'opal/cache/file_cache'
+end
+
+module Opal
+  # A Sprockets-compatible cache, for example an instance of
+  # Opal::Cache::FileCache or Opal::Cache::NullCache.
+  singleton_class.attr_writer :cache
+
+  def self.cache
+    @cache ||=
+      if RUBY_ENGINE == 'opal' || ENV['OPAL_CACHE_DISABLE'] || !Cache::FileCache.find_dir
+        Cache::NullCache.new
+      else
+        Cache::FileCache.new
+      end
+  end
+
+  module Cache
+    class NullCache
+      def fetch(*)
+        yield
+      end
+    end
+
+    module_function
+
+    def fetch(cache, key, &block)
+      # Extension to the Sprockets API of Cache, if a cache responds
+      # to #fetch, then we call it instead of using #get and #set.
+      return cache.fetch(key, &block) if cache.respond_to? :fetch
+
+      key = digest(key.join('/')) + '-' + runtime_key
+
+      data = cache.get(key)
+
+      data || begin
+                compiler = yield
+                cache.set(key, compiler) unless compiler.dynamic_cache_result
+                compiler
+              end
+    end
+
+    def runtime_key
+      @runtime_key ||= begin
+        # We want to ensure the compiler and any Gemfile/gemspec (for development)
+        # stays untouched
+        opal_path = File.expand_path('..', Opal.gem_dir)
+        files = Dir["#{opal_path}/{Gemfile*,*.gemspec,lib/**/*}"]
+
+        # Also check if parser wasn't changed:
+        files += $LOADED_FEATURES.grep(%r{lib/(parser|ast)})
+
+        digest [
+          files.sort.map { |f| "#{f}:#{File.size(f)}:#{File.mtime(f).to_f}" },
+          RUBY_VERSION,
+          RUBY_PATCHLEVEL
+        ].join('/')
+      end
+    end
+
+    def digest(string)
+      ::Digest::SHA256.hexdigest(string)[-32..-1].to_i(16).to_s(36)
+    end
+  end
+end
diff --git a/lib/opal/cache/file_cache.rb b/lib/opal/cache/file_cache.rb
new file mode 100644
index 00000000..008d9664
--- /dev/null
+++ b/lib/opal/cache/file_cache.rb
@@ -0,0 +1,120 @@
+# frozen_string_literal: true
+
+require 'fileutils'
+require 'zlib'
+
+module Opal
+  module Cache
+    class FileCache
+      def initialize(dir: nil, max_size: nil)
+        @dir = dir || self.class.find_dir
+        # Store at most 32MB of cache - de facto this 32MB is larger,
+        # as we don't account for inode size for instance. In fact, it's
+        # about 50M. Also we run this check before anything runs, so things
+        # may go up to 64M or even larger.
+        @max_size = max_size || 32 * 1024 * 1024
+
+        tidy_up_cache
+      end
+
+      def set(key, data)
+        file = cache_filename_for(key)
+
+        out = Marshal.dump(data)
+        out = Zlib.gzip(out, level: 9)
+        File.binwrite(file, out)
+      end
+
+      def get(key)
+        file = cache_filename_for(key)
+
+        if File.exist?(file)
+          FileUtils.touch(file)
+          out = File.binread(file)
+          out = Zlib.gunzip(out)
+          Marshal.load(out) # rubocop:disable Security/MarshalLoad
+        end
+      rescue Zlib::GzipFile::Error
+        nil
+      end
+
+      # Remove cache entries that overflow our cache limit... and which
+      # were used least recently.
+      private def tidy_up_cache
+        entries = Dir[@dir + '/*.rbm.gz']
+        entries_stats = entries.map { |entry| [entry, File.stat(entry)] }
+
+        size_sum = entries_stats.map { |_entry, stat| stat.size }.sum
+        return unless size_sum > @max_size
+
+        # First, we try to get the oldest files first.
+        # Then, what's more important, is that we try to get the least
+        # recently used files first. Filesystems with relatime or noatime
+        # will get this wrong, but it doesn't matter that much, because
+        # the previous sort got things "maybe right".
+        entries_stats = entries_stats.sort_by { |_entry, stat| [stat.mtime, stat.atime] }
+
+        entries_stats.each do |entry, stat|
+          size_sum -= stat.size
+          File.unlink(entry)
+
+          # We don't need to work this out anymore - we reached our goal.
+          break unless size_sum > @max_size
+        end
+      rescue Errno::ENOENT
+        # Do nothing, this comes from multithreading. We will tidy up at
+        # the next chance.
+        nil
+      end
+
+      # This complex piece of code tries to check if we can robustly mkdir_p a directory.
+      def self.dir_writable?(*paths)
+        dir = nil
+        paths = paths.reduce([]) do |a, b|
+          [*a, dir = a.last ? File.expand_path(b, a.last) : b]
+        end
+
+        File.exist?(paths.first) &&
+          paths.reverse.all? do |i|
+            !File.exist?(i) || (File.directory?(i) && File.writable?(i))
+          end
+
+        dir
+      end
+
+      def self.find_dir
+        @find_dir ||= case
+                      # Try to write cache into a directory pointed by an environment variable if present
+                      when dir = ENV['OPAL_CACHE_DIR']
+                        FileUtils.mkdir_p(dir)
+                        dir
+                      # Otherwise, we write to the place where Opal is installed...
+                      # I don't think it's a good location to store cache, so many things can go wrong.
+                      # when dir = dir_writable?(Opal.gem_dir, '..', 'tmp', 'cache')
+                      #   FileUtils.mkdir_p(dir)
+                      #   FileUtils.chmod(0o700, dir)
+                      #   dir
+                      # Otherwise, ~/.cache/opal...
+                      when dir = dir_writable?(Dir.home, '.cache', 'opal')
+                        FileUtils.mkdir_p(dir)
+                        FileUtils.chmod(0o700, dir)
+                        dir
+                      # Only /tmp is writable... or isn't it?
+                      when (dir = dir_writable?('/tmp', "opal-cache-#{ENV['USER']}")) && File.sticky?('/tmp')
+                        FileUtils.mkdir_p(dir)
+                        FileUtils.chmod(0o700, dir)
+                        dir
+                      # No way... we can't write anywhere...
+                      else
+                        warn "Couldn't find a writable path to store Opal cache. " \
+                             'Try setting OPAL_CACHE_DIR environment variable'
+                        nil
+                      end
+      end
+
+      private def cache_filename_for(key)
+        "#{@dir}/#{key}.rbm.gz"
+      end
+    end
+  end
+end
diff --git a/lib/opal/cli.rb b/lib/opal/cli.rb
new file mode 100644
index 00000000..67489ecd
--- /dev/null
+++ b/lib/opal/cli.rb
@@ -0,0 +1,188 @@
+# frozen_string_literal: true
+
+require 'opal/requires'
+require 'opal/builder'
+require 'opal/cli_runners'
+
+module Opal
+  class CLI
+    attr_reader :options, :file, :compiler_options, :evals, :load_paths, :argv,
+      :output, :requires, :rbrequires, :gems, :stubs, :verbose, :runner_options,
+      :preload, :filename, :debug, :no_exit, :lib_only, :missing_require_severity,
+      :no_cache
+
+    class << self
+      attr_accessor :stdout
+    end
+
+    def initialize(options = nil)
+      options ||= {}
+
+      # Runner
+      @runner_type    = options.delete(:runner)         || :nodejs
+      @runner_options = options.delete(:runner_options) || {}
+
+      @options     = options
+      @sexp        = options.delete(:sexp)
+      @repl        = options.delete(:repl)
+      @file        = options.delete(:file)
+      @no_exit     = options.delete(:no_exit)
+      @lib_only    = options.delete(:lib_only)
+      @argv        = options.delete(:argv)       { [] }
+      @evals       = options.delete(:evals)      { [] }
+      @load_paths  = options.delete(:load_paths) { [] }
+      @gems        = options.delete(:gems)       { [] }
+      @stubs       = options.delete(:stubs)      { [] }
+      @preload     = options.delete(:preload)    { [] }
+      @output      = options.delete(:output)     { self.class.stdout || $stdout }
+      @verbose     = options.delete(:verbose)    { false }
+      @debug       = options.delete(:debug)      { false }
+      @filename    = options.delete(:filename)   { @file && @file.path }
+      @requires    = options.delete(:requires)   { [] }
+      @rbrequires  = options.delete(:rbrequires) { [] }
+      @no_cache    = options.delete(:no_cache)   { false }
+
+      @debug_source_map = options.delete(:debug_source_map) { false }
+
+      @missing_require_severity = options.delete(:missing_require_severity) { Opal::Config.missing_require_severity }
+
+      @requires.unshift('opal') unless options.delete(:skip_opal_require)
+
+      @compiler_options = Hash[
+        *compiler_option_names.map do |option|
+          key = option.to_sym
+          next unless options.key? key
+          value = options.delete(key)
+          [key, value]
+        end.compact.flatten
+      ]
+
+      raise ArgumentError, 'no libraries to compile' if @lib_only && @requires.empty?
+      raise ArgumentError, 'no runnable code provided (evals or file)' if @evals.empty? && @file.nil? && !@lib_only
+      raise ArgumentError, "can't accept evals or file in `library only` mode" if (@evals.any? || @file) && @lib_only
+      raise ArgumentError, "unknown options: #{options.inspect}" unless @options.empty?
+    end
+
+    def run
+      return show_sexp if @sexp
+      return debug_source_map if @debug_source_map
+      return run_repl if @repl
+
+      @exit_status = runner.call(
+        options: runner_options,
+        output: output,
+        argv: argv,
+        builder: builder,
+      )
+    end
+
+    def runner
+      CliRunners[@runner_type] ||
+        raise(ArgumentError, "unknown runner: #{@runner_type.inspect}")
+    end
+
+    def run_repl
+      require 'opal/repl'
+
+      repl = REPL.new
+      repl.run(OriginalARGV)
+    end
+
+    attr_reader :exit_status
+
+    def builder
+      @builder ||= create_builder
+    end
+
+    def create_builder
+      rbrequires.each(&Kernel.method(:require))
+
+      builder = Opal::Builder.new(
+        stubs: stubs,
+        compiler_options: compiler_options,
+        missing_require_severity: missing_require_severity,
+      )
+
+      # --no-cache
+      builder.cache = Opal::Cache::NullCache.new if no_cache
+
+      # --include
+      builder.append_paths(*load_paths)
+
+      # --gem
+      gems.each { |gem_name| builder.use_gem gem_name }
+
+      # --require
+      requires.each { |required| builder.build(required) }
+
+      # --preload
+      preload.each { |path| builder.build_require(path) }
+
+      # --verbose
+      builder.build_str '$VERBOSE = true', '(flags)' if verbose
+
+      # --debug
+      builder.build_str '$DEBUG = true', '(flags)' if debug
+
+      # --eval / stdin / file
+      evals_or_file { |source, filename| builder.build_str(source, filename) }
+
+      # --no-exit
+      builder.build_str '::Kernel.exit', '(exit)' unless no_exit
+
+      builder
+    end
+
+    def show_sexp
+      evals_or_file do |contents, filename|
+        buffer = ::Opal::Parser::SourceBuffer.new(filename)
+        buffer.source = contents
+        sexp = Opal::Parser.default_parser.parse(buffer)
+        output.puts sexp.inspect
+      end
+    end
+
+    def debug_source_map
+      evals_or_file do |contents, filename|
+        compiler = Opal::Compiler.new(contents, file: filename, **compiler_options)
+
+        compiler.compile
+
+        result = compiler.result
+        source_map = compiler.source_map.to_json
+
+        b64 = [result, source_map, contents].map { |i| Base64.strict_encode64(i) }.join(',')
+
+        output.puts "https://sokra.github.io/source-map-visualization/#base64,#{b64}"
+      end
+    end
+
+    def compiler_option_names
+      %w[
+        method_missing
+        arity_check
+        dynamic_require_severity
+        source_map_enabled
+        irb_enabled
+        inline_operators
+        enable_source_location
+        use_strict
+        parse_comments
+        esm
+      ]
+    end
+
+    # Internal: Yields a string of source code and the proper filename for either
+    #           evals, stdin or a filepath.
+    def evals_or_file
+      # --library
+      return if lib_only
+
+      if evals.any?
+        yield evals.join("\n"), '-e'
+      elsif file && (filename != '-' || evals.empty?)
+        yield file.read, filename
+      end
+    end
+  end
+end
diff --git a/lib/opal/cli_options.rb b/lib/opal/cli_options.rb
new file mode 100644
index 00000000..462c275c
--- /dev/null
+++ b/lib/opal/cli_options.rb
@@ -0,0 +1,219 @@
+# frozen_string_literal: true
+
+require 'optparse'
+require 'opal/cli_runners'
+
+module Opal
+  class CLIOptions < OptionParser
+    def initialize
+      super
+      @options = {}
+
+      self.banner = 'Usage: opal [options] -- [programfile]'
+
+      separator ''
+
+      on('-v', '--verbose', 'print version number, then turn on verbose mode') do
+        print_version
+        exit if ARGV.empty?
+        options[:verbose] = true
+      end
+
+      on('--verbose', 'turn on verbose mode (set $VERBOSE to true)') do
+        options[:verbose] = true
+      end
+
+      on('-d', '--debug', 'turn on debug mode (set $DEBUG to true)') do
+        options[:debug] = true
+      end
+
+      on('--version', 'Print the version') do
+        print_version
+        exit
+      end
+
+      on('--repl', 'Run the Opal REPL') do
+        options[:repl] = true
+      end
+
+      on('-h', '--help', 'Show this message') do
+        puts self
+        exit
+      end
+
+      section 'Basic Options:'
+
+      on('-I', '--include DIR', 'Append a load path (may be used more than once)') do |i|
+        options[:load_paths] ||= []
+        options[:load_paths] << i
+      end
+
+      on('-e', '--eval SOURCE', String,
+        'One line of script. Several -e\'s allowed. Omit [programfile]'
+      ) do |source|
+        options[:evals] ||= []
+        options[:evals] << source
+      end
+
+      on('-r', '--require LIBRARY', String,
+        'Require the library before executing your script'
+      ) do |library|
+        options[:requires] ||= []
+        options[:requires] << library
+      end
+
+      on('-q', '--rbrequire LIBRARY', String,
+        'Require the library in Ruby context before compiling'
+      ) do |library|
+        options[:rbrequires] ||= []
+        options[:rbrequires] << library
+      end
+
+      on('-s', '--stub FILE', String, 'Stubbed files will be compiled as empty files') do |stub|
+        options[:stubs] ||= []
+        options[:stubs] << stub
+      end
+
+      on('-p', '--preload FILE', String, 'Preloaded files will be prepared for dynamic requires') do |stub|
+        options[:preload] ||= []
+        options[:preload] << stub
+      end
+
+      on('-g', '--gem GEM_NAME', String, 'Adds the specified GEM_NAME to Opal\'s load path.') do |g|
+        options[:gems] ||= []
+        options[:gems] << g
+      end
+
+      section 'Running Options:'
+
+      on('--sexp', 'Show Sexps') do
+        options[:sexp] = true
+      end
+
+      on('--debug-source-map', 'Debug source map') do
+        options[:debug_source_map] = true
+      end
+
+      on('-c', '--compile', 'Compile to JavaScript') do
+        options[:runner] = :compiler
+      end
+
+      on('-R', '--runner RUNNER', Opal::CliRunners.to_h.keys, "Choose the runner: nodejs (default), #{(Opal::CliRunners.to_h.keys - [:nodejs]).join(', ')}") do |runner|
+        options[:runner] = runner.to_sym
+      end
+
+      on('--runner-options JSON', 'Set options specific to the selected runner as a JSON string (e.g. port for server)') do |json_options|
+        require 'json'
+        runner_options = JSON.parse(json_options, symbolize_names: true)
+        options[:runner_options] ||= {}
+        options[:runner_options].merge!(runner_options)
+      end
+
+      on('--server-port PORT', '(deprecated, use --runner-options) Set the port for the server runner (default port: 3000)') do |port|
+        options[:runner_options] ||= {}
+        options[:runner_options][:port] = port.to_i
+      end
+
+      on('-E', '--no-exit', 'Do not append a Kernel#exit at the end of file') do
+        options[:no_exit] = true
+      end
+
+      section 'Compilation Options:'
+
+      on('-M', '--no-method-missing', 'Disable method missing') do
+        options[:method_missing] = false
+      end
+
+      on('-O', '--no-opal', 'Disable implicit `require "opal"`') do
+        options[:skip_opal_require] = true
+      end
+
+      on('-A', '--arity-check', 'Enable arity check') do
+        options[:arity_check] = true
+      end
+
+      on('-V', 'Enable inline Operators') do
+        options[:inline_operators] = true
+      end
+
+      dynamic_require_levels = %w[error warning ignore]
+      on('-D', '--dynamic-require LEVEL', dynamic_require_levels,
+        'Set level of dynamic require severity.',
+        "(default: error, values: #{dynamic_require_levels.join(', ')})"
+      ) do |level|
+        options[:dynamic_require_severity] = level.to_sym
+      end
+
+      missing_require_levels = %w[error warning ignore]
+      on('--missing-require LEVEL', missing_require_levels,
+        'Set level of missing require severity.',
+        "(default: error, values: #{missing_require_levels.join(', ')})"
+      ) do |level|
+        options[:missing_require_severity] = level.to_sym
+      end
+
+      on('-P', '--map FILE', 'Output path to FILE') do |file|
+        options[:runner_options] ||= {}
+        options[:runner_options][:map_file] = file
+      end
+
+      on('--no-source-map', "Don't append source map to a compiled file") do
+        options[:runner_options] ||= {}
+        options[:runner_options][:no_source_map] = true
+      end
+
+      on('-F', '--file FILE', 'Set filename for compiled code') do |file|
+        options[:file] = file
+      end
+
+      on('-L', '--library', 'Compile only required libraries. Omit [programfile] and [-e]. Assumed [-cOE].') do
+        options[:lib_only] = true
+        options[:no_exit] = true
+        options[:compile] = true
+        options[:skip_opal_require] = true
+      end
+
+      on('--irb', 'Enable IRB var mode') do
+        options[:irb] = true
+      end
+
+      on('--enable-source-location', 'Compiles source location for each method definition.') do
+        options[:enable_source_location] = true
+      end
+
+      on('--use-strict', 'Enables JavaScript\'s strict mode (i.e., adds \'use strict\'; statement)') do
+        options[:use_strict] = true
+      end
+
+      on('--parse-comments', 'Compiles comments for each method definition.') do
+        options[:parse_comments] = true
+      end
+
+      on('--no-cache', 'Disable filesystem cache') do
+        options[:no_cache] = true
+      end
+
+      on('--esm', 'Wraps compiled bundle as for ES6 module(requires -c or -L)') do
+        options[:esm] = true
+      end
+
+      separator ''
+    end
+
+    attr_reader :options
+
+
+    private
+
+    def print_version
+      require 'opal/version'
+      puts "Opal v#{Opal::VERSION}"
+    end
+
+    def section(title)
+      separator ''
+      separator title
+      separator ''
+    end
+  end
+end
diff --git a/lib/opal/cli_runners.rb b/lib/opal/cli_runners.rb
new file mode 100644
index 00000000..288d0da1
--- /dev/null
+++ b/lib/opal/cli_runners.rb
@@ -0,0 +1,76 @@
+# frozen_string_literal: true
+
+module Opal
+  # `Opal::CliRunners` is the register in which JavaScript runners can be
+  # defined for use by `Opal::CLI`. Runners will be called via the `#call`
+  # method and passed a Hash containing the following keys:
+  #
+  #
+  # - `options`: a hash of options for the runner
+  # - `output`: an IO-like object responding to `#write` and `#puts`
+  # - `argv`: is the arguments vector coming from the CLI that is being
+  #     forwarded to the program
+  # - `builder`: the current instance of Opal::Builder
+  #
+  # Runners can be registered using `#register_runner(name, runner)`.
+  #
+  module CliRunners
+    class RunnerError < StandardError
+    end
+
+    @register = {}
+
+    def self.[](name)
+      @register[name.to_sym]
+    end
+
+    # @private
+    def self.[]=(name, runner)
+      warn "Overwriting Opal CLI runner: #{name}" if @register.key? name.to_sym
+
+      @register[name.to_sym] = runner
+    end
+    private_class_method :[]=
+
+    def self.to_h
+      @register
+    end
+
+    # @param name [Symbol] the name at which the runner can be reached
+    # @param runner [#call] a callable object that will act as the "runner"
+    # @param runner [Symbol] a constant name that once autoloaded will point to
+    #                        a callable.
+    # @param path [nil,String] a path for setting up autoload on the constant
+    def self.register_runner(name, runner, path = nil)
+      autoload runner, path if path
+
+      if runner.respond_to?(:call)
+        self[name] = runner
+      else
+        self[name] = ->(data) { const_get(runner).call(data) }
+      end
+
+      nil
+    end
+
+    # Alias a runner name
+    def self.alias_runner(new_name, old_name)
+      self[new_name.to_sym] = self[old_name.to_sym]
+
+      nil
+    end
+
+    register_runner :applescript, :Applescript, 'opal/cli_runners/applescript'
+    register_runner :chrome,      :Chrome,      'opal/cli_runners/chrome'
+    register_runner :compiler,    :Compiler,    'opal/cli_runners/compiler'
+    register_runner :nashorn,     :Nashorn,     'opal/cli_runners/nashorn'
+    register_runner :nodejs,      :Nodejs,      'opal/cli_runners/nodejs'
+    register_runner :gjs,         :Gjs,         'opal/cli_runners/gjs'
+    register_runner :quickjs,     :Quickjs,     'opal/cli_runners/quickjs'
+    register_runner :miniracer,   :MiniRacer,   'opal/cli_runners/mini_racer'
+    register_runner :server,      :Server,      'opal/cli_runners/server'
+
+    alias_runner :osascript, :applescript
+    alias_runner :node, :nodejs
+  end
+end
diff --git a/lib/opal/cli_runners/applescript.rb b/lib/opal/cli_runners/applescript.rb
new file mode 100644
index 00000000..4d3e95c0
--- /dev/null
+++ b/lib/opal/cli_runners/applescript.rb
@@ -0,0 +1,28 @@
+# frozen_string_literal: true
+
+require 'opal/cli_runners/system_runner'
+
+module Opal
+  module CliRunners
+    class Applescript
+      def self.call(data)
+        unless system('which osalang > /dev/null')
+          raise MissingJavaScriptSupport, 'JavaScript Automation is only supported by OS X Yosemite and above.'
+        end
+
+        SystemRunner.call(data) do |tempfile|
+          tempfile.puts "'';" # OSAScript will output the last thing
+          ['osascript', '-l', 'JavaScript', tempfile.path, *data[:argv]]
+        end
+      rescue Errno::ENOENT
+        raise MissingAppleScript, 'AppleScript is only available on Mac OS X.'
+      end
+
+      class MissingJavaScriptSupport < RunnerError
+      end
+
+      class MissingAppleScript < RunnerError
+      end
+    end
+  end
+end
diff --git a/lib/opal/cli_runners/chrome.rb b/lib/opal/cli_runners/chrome.rb
new file mode 100644
index 00000000..598512a6
--- /dev/null
+++ b/lib/opal/cli_runners/chrome.rb
@@ -0,0 +1,182 @@
+# frozen_string_literal: true
+
+require 'shellwords'
+require 'socket'
+require 'timeout'
+require 'tmpdir'
+require 'rbconfig'
+
+module Opal
+  module CliRunners
+    class Chrome
+      SCRIPT_PATH = File.expand_path('chrome_cdp_interface.rb', __dir__).freeze
+
+      DEFAULT_CHROME_HOST = 'localhost'
+      DEFAULT_CHROME_PORT = 9222
+
+      def self.call(data)
+        runner = new(data)
+        runner.run
+      end
+
+      def initialize(data)
+        builder = data[:builder]
+        options = data[:options]
+        argv    = data[:argv]
+
+        if argv && argv.any?
+          warn "warning: ARGV is not supported by the Chrome runner #{argv.inspect}"
+        end
+
+        @output = options.fetch(:output, $stdout)
+        @builder = builder
+      end
+
+      attr_reader :output, :exit_status, :builder
+
+      def run
+        mktmpdir do |dir|
+          with_chrome_server do
+            prepare_files_in(dir)
+
+            env = {
+              'CHROME_HOST' => chrome_host,
+              'CHROME_PORT' => chrome_port.to_s,
+              'NODE_PATH' => File.join(__dir__, 'node_modules')
+            }
+
+            cmd = [
+              RbConfig.ruby,
+              "#{__dir__}/../../../exe/opal",
+              '--no-exit',
+              '-I', __dir__,
+              '-r', 'source-map-support-node',
+              SCRIPT_PATH,
+              dir,
+            ]
+
+            Kernel.exec(env, *cmd)
+          end
+        end
+      end
+
+      private
+
+      def prepare_files_in(dir)
+        js = builder.to_s
+        map = builder.source_map.to_json
+        stack = File.read("#{__dir__}/source-map-support-browser.js")
+
+        # Chrome can't handle huge data passed to `addScriptToEvaluateOnLoad`
+        # https://groups.google.com/a/chromium.org/forum/#!topic/chromium-discuss/U5qyeX_ydBo
+        # The only way is to create temporary files and pass them to chrome.
+        File.write("#{dir}/index.js", js)
+        File.write("#{dir}/source-map-support.js", stack)
+        File.write("#{dir}/index.html", <<~HTML)
+          <html><head>
+            <meta charset='utf-8'>
+            <script src='./source-map-support.js'></script>
+            <script>
+            sourceMapSupport.install({
+              retrieveSourceMap: function(path) {
+                return path.endsWith('/index.js') ? {
+                  url: './index.map', map: #{map.to_json}
+                } : null;
+              }
+            });
+            </script>
+          </head><body>
+            <script src='./index.js'></script>
+          </body></html>
+        HTML
+      end
+
+      def chrome_host
+        ENV['CHROME_HOST'] || DEFAULT_CHROME_HOST
+      end
+
+      def chrome_port
+        ENV['CHROME_PORT'] || DEFAULT_CHROME_PORT
+      end
+
+      def with_chrome_server
+        if chrome_server_running?
+          yield
+        else
+          run_chrome_server { yield }
+        end
+      end
+
+      def run_chrome_server
+        raise 'Chrome server can be started only on localhost' if chrome_host != DEFAULT_CHROME_HOST
+
+        # Disable web security with "--disable-web-security" flag to be able to do XMLHttpRequest (see test_openuri.rb)
+        chrome_server_cmd = %{#{chrome_executable.shellescape} \
+          --headless \
+          --disable-web-security \
+          --remote-debugging-port=#{chrome_port} \
+          #{ENV['CHROME_OPTS']}}
+
+        chrome_pid = Process.spawn(chrome_server_cmd)
+
+        Timeout.timeout(10) do
+          loop do
+            break if chrome_server_running?
+            sleep 0.5
+          end
+        end
+
+        yield
+      rescue Timeout::Error
+        puts 'Failed to start chrome server'
+        puts 'Make sure that you have it installed and that its version is > 59'
+        exit(1)
+      ensure
+        if Gem.win_platform? && chrome_pid
+          Process.kill('KILL', chrome_pid) unless system("taskkill /f /t /pid #{chrome_pid} >NUL 2>NUL")
+        elsif chrome_pid
+          Process.kill('HUP', chrome_pid)
+        end
+      end
+
+      def chrome_server_running?
+        puts "Connecting to #{chrome_host}:#{chrome_port}..."
+        TCPSocket.new(chrome_host, chrome_port).close
+        true
+      rescue Errno::ECONNREFUSED, Errno::EADDRNOTAVAIL
+        false
+      end
+
+      def chrome_executable
+        ENV['GOOGLE_CHROME_BINARY'] ||
+          case RbConfig::CONFIG['host_os']
+          when /bccwin|cygwin|djgpp|mingw|mswin|wince/
+            [
+              'C:/Program Files/Google/Chrome Dev/Application/chrome.exe',
+              'C:/Program Files/Google/Chrome/Application/chrome.exe'
+            ].each do |path|
+              next unless File.exist? path
+              return path
+            end
+          when /darwin|mac os/
+            '/Applications/Google Chrome.app/Contents/MacOS/Google Chrome'
+          else
+            %w[
+              google-chrome-stable
+              chromium
+              chromium-freeworld
+              chromium-browser
+            ].each do |name|
+              next unless system('sh', '-c', "command -v #{name.shellescape}", out: '/dev/null')
+              return name
+            end
+            raise 'Cannot find chrome executable'
+          end
+      end
+
+      def mktmpdir(&block)
+        Dir.mktmpdir('chrome-opal-', &block)
+      end
+    end
+  end
+end
diff --git a/lib/opal/cli_runners/chrome_cdp_interface.rb b/lib/opal/cli_runners/chrome_cdp_interface.rb
new file mode 100644
index 00000000..be6f07cd
--- /dev/null
+++ b/lib/opal/cli_runners/chrome_cdp_interface.rb
@@ -0,0 +1,128 @@
+# frozen_string_literal: true
+
+# This script I converted into Opal, so that I don't have to write
+# buffer handling again. We have gets, Node has nothing close to it,
+# even async.
+
+require 'opal/platform'
+
+%x{
+var CDP = require("chrome-remote-interface");
+var fs = require("fs");
+
+var dir = #{ARGV.last}
+
+var options = {
+  host: #{ENV['CHROME_HOST'] || 'localhost'},
+  port: #{ENV['CHROME_PORT'] || 9222}
+};
+
+CDP(options, function(client) {
+  var Page = client.Page,
+      Runtime = client.Runtime,
+      Console = client.Console;
+
+  Promise.all([
+    Console.enable(),
+    Page.enable(),
+    Runtime.enable(),
+  ]).then(function() {
+    // This hook catches only the first argument of `console.log`
+    // More advanced version Runtime.consoleAPICalled returns all arguments
+    // but all of them are not formatted, i.e. by calling
+    //   console.log('string', [1, 2, 3], {a: 'b'})
+    // it returns the following data to the callback:
+    //   {
+    //     "type":"log",
+    //     "args":[
+    //       {
+    //         "type":"string",
+    //         "value":"string"
+    //       },
+    //       {
+    //         "type":"object",
+    //         "subtype":"array",
+    //         "className":"Array",
+    //         "description":"Array(3)",
+    //         "objectId":"{\"injectedScriptId\":11,\"id\":1}",
+    //         "preview":{
+    //           "type":"object",
+    //           "subtype":"array",
+    //           "description":"Array(3)",
+    //           "overflow":false,
+    //           "properties":[
+    //             {"name":"0","type":"number","value":"1"},
+    //             {"name":"1","type":"number","value":"2"},
+    //             {"name":"2","type":"number","value":"3"}
+    //           ]
+    //         }
+    //       },
+    //       {
+    //         "type":"object",
+    //         "className":"Object",
+    //         "description":"Object",
+    //         "objectId":"{\"injectedScriptId\":11,\"id\":2}",
+    //         "preview":{
+    //           "type":"object",
+    //           "description":"Object",
+    //           "overflow":false,
+    //           "properties":[
+    //             {"name":"a","type":"string","value":"b"}
+    //           ]
+    //         }
+    //       }
+    //     ],
+    //     // ...
+    //   }
+    // Supporting this format for complex data structure is challenging, feel free to contribute!
+    //
+    Console.messageAdded(function(console_message) {
+      process.stdout.write(console_message.message.text);
+    });
+
+    Runtime.exceptionThrown(function(exception) {
+      var properties = exception.exceptionDetails.exception.preview.properties,
+          stack, i;
+
+      for (i = 0; i < properties.length; i++) {
+        var property = properties[i];
+
+        if (property.name == "stack") {
+          stack = property.value;
+        }
+      }
+
+      console.log(stack);
+
+      process.exit(1);
+    });
+
+    Page.javascriptDialogOpening((dialog) => {
+      #{
+        if `dialog.type` == 'prompt'
+          message = gets&.chomp
+          if message
+            `Page.handleJavaScriptDialog({accept: true, promptText: #{message}})`
+          else
+            `Page.handleJavaScriptDialog({accept: false})`
+          end
+        end
+      }
+    });
+
+    Page.loadEventFired(() => {
+      Runtime.evaluate({ expression: "window.OPAL_EXIT_CODE" }).then(function(output) {
+        client.close();
+
+        if (typeof(output.result) !== "undefined" && output.result.type === "number") {
+          process.exit(output.result.value);
+        } else {
+          process.exit(0);
+        }
+      })
+    });
+
+    Page.navigate({ url: "file://"+dir+"/index.html" })
+  });
+});
+}
diff --git a/lib/opal/cli_runners/compiler.rb b/lib/opal/cli_runners/compiler.rb
new file mode 100644
index 00000000..4447ce6d
--- /dev/null
+++ b/lib/opal/cli_runners/compiler.rb
@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+require 'opal/paths'
+
+# The compiler runner will just output the compiled JavaScript
+Opal::CliRunners::Compiler = ->(data) {
+  options  = data[:options] || {}
+  builder  = data.fetch(:builder)
+  map_file = options[:map_file]
+  output   = data.fetch(:output)
+
+  compiled_source = builder.to_s
+  compiled_source += "\n" + builder.source_map.to_data_uri_comment unless options[:no_source_map]
+  output.puts compiled_source
+  File.write(map_file, builder.source_map.to_json) if map_file
+
+  0
+}
diff --git a/lib/opal/cli_runners/gjs.rb b/lib/opal/cli_runners/gjs.rb
new file mode 100644
index 00000000..d6ab6510
--- /dev/null
+++ b/lib/opal/cli_runners/gjs.rb
@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+
+require 'opal/paths'
+require 'opal/cli_runners/system_runner'
+require 'shellwords'
+
+module Opal
+  module CliRunners
+    # Gjs is GNOME's JavaScript runtime based on Mozilla SpiderMonkey
+    class Gjs
+      def self.call(data)
+        exe = ENV['GJS_PATH'] || 'gjs'
+
+        opts = Shellwords.shellwords(ENV['GJS_OPTS'] || '')
+
+        SystemRunner.call(data) do |tempfile|
+          [exe, *opts, tempfile.path, *data[:argv]]
+        end
+      rescue Errno::ENOENT
+        raise MissingGjs, 'Please install Gjs to be able to run Opal scripts.'
+      end
+
+      class MissingGjs < RunnerError
+      end
+    end
+  end
+end
diff --git a/lib/opal/cli_runners/mini_racer.rb b/lib/opal/cli_runners/mini_racer.rb
new file mode 100644
index 00000000..d9f9b80e
--- /dev/null
+++ b/lib/opal/cli_runners/mini_racer.rb
@@ -0,0 +1,36 @@
+# frozen_string_literal: true
+
+require 'mini_racer'
+require 'opal/paths'
+
+module Opal
+  module CliRunners
+    class MiniRacer
+      def self.call(data)
+        ::MiniRacer::Platform.set_flags! :harmony
+
+        builder = data.fetch(:builder)
+        output = data.fetch(:output)
+        # TODO: pass it
+        argv = data.fetch(:argv)
+
+        v8 = ::MiniRacer::Context.new
+        v8.attach('prompt', ->(_msg = '') { $stdin.gets&.chomp })
+        v8.attach('console.log', ->(i) { output.print(i); output.flush })
+        v8.attach('console.warn', ->(i) { $stderr.print(i); $stderr.flush })
+        v8.attach('crypto.randomBytes', method(:random_bytes).to_proc)
+        v8.attach('opalminiracer.exit', ->(status) { Kernel.exit(status) })
+        v8.attach('opalminiracer.argv', argv)
+
+        code = builder.to_s + "\n" + builder.source_map.to_data_uri_comment
+
+        v8.eval(code)
+      end
+
+      # A polyfill so that SecureRandom works in repl correctly.
+      def self.random_bytes(bytes)
+        ::SecureRandom.bytes(bytes).split('').map(&:ord)
+      end
+    end
+  end
+end
diff --git a/lib/opal/cli_runners/nashorn.rb b/lib/opal/cli_runners/nashorn.rb
new file mode 100644
index 00000000..a6baecd1
--- /dev/null
+++ b/lib/opal/cli_runners/nashorn.rb
@@ -0,0 +1,25 @@
+# frozen_string_literal: true
+
+require 'opal/paths'
+require 'opal/cli_runners/system_runner'
+
+module Opal
+  module CliRunners
+    class Nashorn
+      def self.call(data)
+        # Allow to change path if using GraalVM, see:
+        # https://github.com/graalvm/graaljs/blob/master/docs/user/NashornMigrationGuide.md#launcher-name-js
+        exe = ENV['NASHORN_PATH'] || 'jjs'
+
+        SystemRunner.call(data) do |tempfile|
+          [exe, tempfile.path, *data[:argv]]
+        end
+      rescue Errno::ENOENT
+        raise MissingNashorn, 'Please install JDK or GraalVM to be able to run Opal scripts.'
+      end
+
+      class MissingNashorn < RunnerError
+      end
+    end
+  end
+end
diff --git a/lib/opal/cli_runners/node_modules/.bin/chrome-remote-interface b/lib/opal/cli_runners/node_modules/.bin/chrome-remote-interface
new file mode 120000
index 00000000..b6257f3d
--- /dev/null
+++ b/lib/opal/cli_runners/node_modules/.bin/chrome-remote-interface
@@ -0,0 +1 @@
+../chrome-remote-interface/bin/client.js
\ No newline at end of file
diff --git a/lib/opal/cli_runners/node_modules/chrome-remote-interface/LICENSE b/lib/opal/cli_runners/node_modules/chrome-remote-interface/LICENSE
new file mode 100644
index 00000000..7e69daea
--- /dev/null
+++ b/lib/opal/cli_runners/node_modules/chrome-remote-interface/LICENSE
@@ -0,0 +1,18 @@
+Copyright (c) 2017 Andrea Cardaci <cyrus.and@gmail.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/lib/opal/cli_runners/node_modules/chrome-remote-interface/README.md b/lib/opal/cli_runners/node_modules/chrome-remote-interface/README.md
new file mode 100644
index 00000000..399fb544
--- /dev/null
+++ b/lib/opal/cli_runners/node_modules/chrome-remote-interface/README.md
@@ -0,0 +1,843 @@
+chrome-remote-interface    [![Build Status](https://travis-ci.org/cyrus-and/chrome-remote-interface.svg?branch=master)](https://travis-ci.org/cyrus-and/chrome-remote-interface)
+=======================
+
+[Chrome Debugging Protocol] interface that helps to instrument Chrome (or any
+other suitable [implementation](#implementations)) by providing a simple
+abstraction of commands and notifications using a straightforward JavaScript
+API.
+
+This module is one of the many [third-party protocol clients][3rd-party].
+
+[3rd-party]: https://developer.chrome.com/devtools/docs/debugging-clients#chrome-remote-interface
+
+Sample API usage
+----------------
+
+The following snippet loads `https://github.com` and dumps every request made:
+
+```js
+const CDP = require('chrome-remote-interface');
+
+CDP((client) => {
+    // extract domains
+    const {Network, Page} = client;
+    // setup handlers
+    Network.requestWillBeSent((params) => {
+        console.log(params.request.url);
+    });
+    Page.loadEventFired(() => {
+        client.close();
+    });
+    // enable events then start!
+    Promise.all([
+        Network.enable(),
+        Page.enable()
+    ]).then(() => {
+        return Page.navigate({url: 'https://github.com'});
+    }).catch((err) => {
+        console.error(err);
+        client.close();
+    });
+}).on('error', (err) => {
+    // cannot connect to the remote endpoint
+    console.error(err);
+});
+```
+
+Find more examples in the [wiki], in particular notice how the above can be
+rewritten using the [`async`/`await`][async-await-example] primitives.
+
+[wiki]: https://github.com/cyrus-and/chrome-remote-interface/wiki
+[async-await-example]: https://github.com/cyrus-and/chrome-remote-interface/wiki/Async-await-example
+
+Installation
+------------
+
+    npm install chrome-remote-interface
+
+Install globally (`-g`) to just use the [bundled client](#bundled-client).
+
+Implementations
+---------------
+
+This module should work with every application implementing the
+[Chrome Debugging Protocol]. In particular, it has been tested against the
+following implementations:
+
+Implementation             | Protocol version   | [Protocol] | [List] | [New] | [Activate] | [Close] | [Version]
+---------------------------|--------------------|------------|--------|-------|------------|---------|-----------
+[Google Chrome][1.1]       | [tip-of-tree][1.2] | yes        | yes    | yes   | yes        | yes     | yes
+[Microsoft Edge][2.1]      | [*partial*][2.2]   | yes        | yes    | no    | no         | no      | yes
+[Node.js][3.1] ([v6.3.0]+) | [node][3.2]        | yes        | no     | no    | no         | no      | yes
+[Safari (iOS)][4.1]        | [*partial*][4.2]   | no         | yes    | no    | no         | no      | no
+
+[1.1]: #chromechromium
+[1.2]: https://chromedevtools.github.io/devtools-protocol/tot/
+
+[2.1]: #edge
+[2.2]: https://github.com/Microsoft/edge-diagnostics-adapter/wiki/Supported-features-and-API
+
+[3.1]: #nodejs
+[3.2]: https://chromedevtools.github.io/devtools-protocol/v8/
+
+[4.1]: #safari-ios
+[4.2]: http://trac.webkit.org/browser/trunk/Source/JavaScriptCore/inspector/protocol
+
+[v6.3.0]: https://nodejs.org/en/blog/release/v6.3.0/
+
+[Protocol]: #cdpprotocoloptions-callback
+[List]: #cdplistoptions-callback
+[New]: #cdpnewoptions-callback
+[Activate]: #cdpactivateoptions-callback
+[Close]: #cdpcloseoptions-callback
+[Version]: #cdpversionoptions-callback
+
+The meaning of *target* varies according to the implementation, for example,
+each Chrome tab represents a target whereas for Node.js a target is the
+currently inspected script.
+
+Setup
+-----
+
+An instance of either Chrome itself or another implementation needs to be
+running on a known port in order to use this module (defaults to
+`localhost:9222`).
+
+### Chrome/Chromium
+
+#### Desktop
+
+Start Chrome with the `--remote-debugging-port` option, for example:
+
+    google-chrome --remote-debugging-port=9222
+
+##### Headless
+
+Since version 59, additionally use the `--headless` option, for example:
+
+    google-chrome --headless --remote-debugging-port=9222
+
+#### Android
+
+Plug the device and enable the [port forwarding][adb], for example:
+
+    adb forward tcp:9222 localabstract:chrome_devtools_remote
+
+[adb]: https://developer.chrome.com/devtools/docs/remote-debugging-legacy
+
+##### WebView
+
+In order to be inspectable, a WebView must
+be [configured for debugging][webview] and the corresponding process ID must be
+known. There are several ways to obtain it, for example:
+
+    adb shell grep -a webview_devtools_remote /proc/net/unix
+
+Finally, port forwarding can be enabled as follows:
+
+    adb forward tcp:9222 localabstract:webview_devtools_remote_<pid>
+
+[webview]: https://developers.google.com/web/tools/chrome-devtools/remote-debugging/webviews#configure_webviews_for_debugging
+
+### Edge
+
+Install and run the [Edge Diagnostics Adapter][edge-adapter].
+
+[edge-adapter]: https://github.com/Microsoft/edge-diagnostics-adapter
+
+### Node.js
+
+Start Node.js with the `--inspect` option, for example:
+
+    node --inspect=9222 script.js
+
+### Safari (iOS)
+
+Install and run the [iOS WebKit Debug Proxy][iwdp].
+
+[iwdp]: https://github.com/google/ios-webkit-debug-proxy
+
+Bundled client
+--------------
+
+This module comes with a bundled client application that can be used to
+interactively control a remote instance.
+
+### Target management
+
+The bundled client exposes subcommands to interact with the HTTP frontend
+(e.g., [List](#cdplistoptions-callback), [New](#cdpnewoptions-callback), etc.),
+run with `--help` to display the list of available options.
+
+Here are some examples:
+
+```javascript
+$ chrome-remote-interface new 'http://example.com'
+{
+    "description": "",
+    "devtoolsFrontendUrl": "/devtools/inspector.html?ws=localhost:9222/devtools/page/b049bb56-de7d-424c-a331-6ae44cf7ae01",
+    "id": "b049bb56-de7d-424c-a331-6ae44cf7ae01",
+    "thumbnailUrl": "/thumb/b049bb56-de7d-424c-a331-6ae44cf7ae01",
+    "title": "",
+    "type": "page",
+    "url": "http://example.com/",
+    "webSocketDebuggerUrl": "ws://localhost:9222/devtools/page/b049bb56-de7d-424c-a331-6ae44cf7ae01"
+}
+$ chrome-remote-interface close 'b049bb56-de7d-424c-a331-6ae44cf7ae01'
+```
+
+### Inspection
+
+Using the `inspect` subcommand it is possible to
+perform [command execution](#clientdomainmethodparams-callback)
+and [event binding](#clientdomaineventcallback) in a REPL fashion. But unlike
+the regular API the callbacks are overridden to conveniently display the result
+of the commands and the message of the events. Also, the event binding is
+simplified here, executing a shorthand method (e.g., `Page.loadEventFired()`)
+toggles the event registration.
+
+Remember that the REPL interface provides completion.
+
+Here is a sample session:
+
+```javascript
+$ chrome-remote-interface inspect
+>>> Runtime.evaluate({expression: 'window.location.toString()'})
+{ result:
+   { result:
+      { type: 'string',
+        value: 'https://www.google.it/_/chrome/newtab?espv=2&ie=UTF-8' },
+     wasThrown: false } }
+>>> Page.enable()
+{ result: {} }
+>>> Page.loadEventFired() // registered
+{ 'Page.loadEventFired': true }
+>>> Page.loadEventFired() // unregistered
+{ 'Page.loadEventFired': false }
+>>> Page.loadEventFired() // registered
+{ 'Page.loadEventFired': true }
+>>> Page.navigate({url: 'https://github.com'})
+{ result: { frameId: '28677.1' } }
+{ 'Page.loadEventFired': { timestamp: 21385.383076 } }
+>>> Runtime.evaluate({expression: 'window.location.toString()'})
+{ result:
+   { result: { type: 'string', value: 'https://github.com/' },
+     wasThrown: false } }
+```
+
+#### Event filtering
+
+To reduce the amount of data displayed by the event listeners it is possible to
+provide a filter function. In this example only the resource URL is shown:
+
+```javascript
+$ chrome-remote-interface inspect
+>>> Network.enable()
+{ result: {} }
+>>> Network.requestWillBeSent(params => params.request.url)
+{ 'Network.requestWillBeSent': 'params => params.request.url' }
+>>> Page.navigate({url: 'https://www.wikipedia.org'})
+{ 'Network.requestWillBeSent': 'https://www.wikipedia.org/' }
+{ result: { frameId: '5530.1' } }
+{ 'Network.requestWillBeSent': 'https://www.wikipedia.org/portal/wikipedia.org/assets/img/Wikipedia_wordmark.png' }
+{ 'Network.requestWillBeSent': 'https://www.wikipedia.org/portal/wikipedia.org/assets/img/Wikipedia-logo-v2.png' }
+{ 'Network.requestWillBeSent': 'https://www.wikipedia.org/portal/wikipedia.org/assets/js/index-3b68787aa6.js' }
+{ 'Network.requestWillBeSent': 'https://www.wikipedia.org/portal/wikipedia.org/assets/js/gt-ie9-c84bf66d33.js' }
+{ 'Network.requestWillBeSent': 'https://www.wikipedia.org/portal/wikipedia.org/assets/img/sprite-bookshelf_icons.png?16ed124e8ca7c5ce9d463e8f99b2064427366360' }
+{ 'Network.requestWillBeSent': 'https://www.wikipedia.org/portal/wikipedia.org/assets/img/sprite-project-logos.png?9afc01c5efe0a8fb6512c776955e2ad3eb48fbca' }
+```
+
+Embedded documentation
+----------------------
+
+In both the REPL and the regular API every object of the protocol is *decorated*
+with the meta information found within the descriptor. In addition The
+`category` field is added, which determines if the member is a `command`, an
+`event` or a `type`.
+
+For example to learn how to call `Page.navigate`:
+
+```javascript
+>>> Page.navigate
+{ [Function]
+  category: 'command',
+  parameters: { url: { type: 'string', description: 'URL to navigate the page to.' } },
+  returns:
+   [ { name: 'frameId',
+       '$ref': 'FrameId',
+       hidden: true,
+       description: 'Frame id that will be navigated.' } ],
+  description: 'Navigates current page to the given URL.',
+  handlers: [ 'browser', 'renderer' ] }
+```
+
+To learn about the parameters returned by the `Network.requestWillBeSent` event:
+
+```javascript
+>>> Network.requestWillBeSent
+{ [Function]
+  category: 'event',
+  description: 'Fired when page is about to send HTTP request.',
+  parameters:
+   { requestId: { '$ref': 'RequestId', description: 'Request identifier.' },
+     frameId:
+      { '$ref': 'Page.FrameId',
+        description: 'Frame identifier.',
+        hidden: true },
+     loaderId: { '$ref': 'LoaderId', description: 'Loader identifier.' },
+     documentURL:
+      { type: 'string',
+        description: 'URL of the document this request is loaded for.' },
+     request: { '$ref': 'Request', description: 'Request data.' },
+     timestamp: { '$ref': 'Timestamp', description: 'Timestamp.' },
+     wallTime:
+      { '$ref': 'Timestamp',
+        hidden: true,
+        description: 'UTC Timestamp.' },
+     initiator: { '$ref': 'Initiator', description: 'Request initiator.' },
+     redirectResponse:
+      { optional: true,
+        '$ref': 'Response',
+        description: 'Redirect response data.' },
+     type:
+      { '$ref': 'Page.ResourceType',
+        optional: true,
+        hidden: true,
+        description: 'Type of this resource.' } } }
+```
+
+To inspect the `Network.Request` (note that unlike commands and events, types
+are named in upper camel case) type:
+
+```javascript
+>>> Network.Request
+{ category: 'type',
+  id: 'Request',
+  type: 'object',
+  description: 'HTTP request data.',
+  properties:
+   { url: { type: 'string', description: 'Request URL.' },
+     method: { type: 'string', description: 'HTTP request method.' },
+     headers: { '$ref': 'Headers', description: 'HTTP request headers.' },
+     postData:
+      { type: 'string',
+        optional: true,
+        description: 'HTTP POST request data.' },
+     mixedContentType:
+      { optional: true,
+        type: 'string',
+        enum: [Object],
+        description: 'The mixed content status of the request, as defined in http://www.w3.org/TR/mixed-content/' },
+     initialPriority:
+      { '$ref': 'ResourcePriority',
+        description: 'Priority of the resource request at the time request is sent.' } } }
+```
+
+Chrome Debugging Protocol versions
+----------------------------------
+
+`chrome-remote-interface` uses the [local version] of the protocol descriptor by
+default. This file is manually updated from time to time using
+`scripts/update-protocol.sh` and pushed to this repository.
+
+This behavior can be changed by setting the `remote` option to `true`
+upon [connection](#cdpoptions-callback), in which case the remote instance is
+*asked* to provide its own protocol descriptor.
+
+Chrome < 60.0.3097.0 is not able to do that, so in that case the protocol
+descriptor is fetched from the source repository.
+
+To override the above behavior there are basically three options:
+
+- pass a custom protocol descriptor upon [connection](#cdpoptions-callback)
+  (`protocol` option);
+
+- use the *raw* version of the [commands](#clientsendmethod-params-callback)
+  and [events](#event-domainmethod) interface;
+
+- update the local copy with `scripts/update-protocol.sh` (not present when
+  fetched with `npm install`).
+
+[local version]: lib/protocol.json
+
+Browser usage
+-------------
+
+This module is able to run within a web context, with obvious limitations
+though, namely external HTTP requests
+([List](#cdplistoptions-callback), [New](#cdpnewoptions-callback), etc.) cannot
+be performed directly, for this reason the user must provide a global
+`criRequest` in order to use them:
+
+```js
+function criRequest(options, callback) {}
+```
+
+`options` is the same object used by the Node.js `http` module and `callback` is
+a function taking two arguments: `err` (JavaScript `Error` object or `null`) and
+`data` (string result).
+
+### Using [webpack](https://webpack.github.io/)
+
+It just works, simply require this module:
+
+```js
+const CDP = require('chrome-remote-interface');
+```
+
+To use a non-minified version manually run webpack with:
+
+    DEBUG=true npm run webpack
+
+### Using *vanilla* JavaScript
+
+To generate a JavaScript file that can be used with a `<script>` element:
+
+1. run `npm install` from the root directory;
+
+2. manually run webpack with:
+
+        TARGET=var npm run webpack
+        TARGET=var DEBUG=true npm run webpack
+
+3. use as:
+
+    ```html
+    <script>
+      function criRequest(options, callback) { /*...*/ }
+    </script>
+    <script src="chrome-remote-interface.js"></script>
+    ```
+
+API
+---
+
+The API consists of three parts:
+
+- *DevTools* methods (for those [implementations](#implementations) that support
+  them, e.g., [List](#cdplistoptions-callback), [New](#cdpnewoptions-callback),
+  etc.);
+
+- [connection](#cdpoptions-callback) establishment;
+
+- the actual [protocol interaction](#class-cdp).
+
+### CDP([options], [callback])
+
+Connects to a remote instance using the [Chrome Debugging Protocol].
+
+`options` is an object with the following optional properties:
+
+- `host`: HTTP frontend host. Defaults to `localhost`;
+- `port`: HTTP frontend port. Defaults to `9222`;
+- `secure`: HTTPS/WSS frontend. Defaults to `false`;
+- `target`: determines which target this client should attach to. The behavior
+  changes according to the type:
+
+  - a `function` that takes the array returned by the `List` method and returns
+    a target or its numeric index relative to the array;
+  - a target `object` like those returned by the `New` and `List` methods;
+  - a `string` representing the raw WebSocket URL, in this case `host` and
+    `port` are not used to fetch the target list, yet they are used to complete
+    the URL if relative;
+  - a `string` representing the target id.
+
+  Defaults to a function which returns the first available target according to
+  the implementation (note that at most one connection can be established to the
+  same target);
+- `protocol`: [Chrome Debugging Protocol] descriptor object. Defaults to use the
+  protocol chosen according to the `remote` option;
+- `remote`: a boolean indicating whether the protocol must be fetched *remotely*
+  or if the local version must be used. It has no effect if the `protocol`
+  option is set. Defaults to `false`.
+
+These options are also valid properties of all the instances of the `CDP` class.
+
+`callback` is a listener automatically added to the `connect` event of the
+returned `EventEmitter`. When `callback` is omitted a `Promise` object is
+returned which becomes fulfilled if the `connect` event is triggered and
+rejected if the `error` event is triggered.
+
+The `EventEmitter` supports the following events:
+
+#### Event: 'connect'
+
+```javascript
+function (client) {}
+```
+
+Emitted when the connection to the WebSocket is established.
+
+`client` is an instance of the `CDP` class.
+
+#### Event: 'error'
+
+```javascript
+function (err) {}
+```
+
+Emitted when `http://host:port/json` cannot be reached or if it is not possible
+to connect to the WebSocket.
+
+`err` is an instance of `Error`.
+
+### CDP.Protocol([options], [callback])
+
+Fetch the [Chrome Debugging Protocol] descriptor.
+
+`options` is an object with the following optional properties:
+
+- `host`: HTTP frontend host. Defaults to `localhost`;
+- `port`: HTTP frontend port. Defaults to `9222`;
+- `secure`: HTTPS/WSS frontend. Defaults to `false`;
+- `remote`: a boolean indicating whether the protocol must be fetched *remotely*
+  or if the local version must be returned. If it is not possible to fulfill the
+  request then the local version is used. Defaults to `false`.
+
+`callback` is executed when the protocol is fetched, it gets the following
+arguments:
+
+- `err`: a `Error` object indicating the success status;
+- `protocol`: an object with the following properties:
+   - `remote`: a boolean indicating whether the returned descriptor is the
+     remote version or not (due to user choice or error);
+   - `descriptor`: the [Chrome Debugging Protocol] descriptor.
+
+When `callback` is omitted a `Promise` object is returned.
+
+For example:
+
+```javascript
+const CDP = require('chrome-remote-interface');
+CDP.Protocol(function (err, protocol) {
+    if (!err) {
+        console.log(JSON.stringify(protocol.descriptor, null, 4));
+    }
+});
+```
+
+### CDP.List([options], [callback])
+
+Request the list of the available open targets/tabs of the remote instance.
+
+`options` is an object with the following optional properties:
+
+- `host`: HTTP frontend host. Defaults to `localhost`;
+- `port`: HTTP frontend port. Defaults to `9222`;
+- `secure`: HTTPS/WSS frontend. Defaults to `false`.
+
+`callback` is executed when the list is correctly received, it gets the
+following arguments:
+
+- `err`: a `Error` object indicating the success status;
+- `targets`: the array returned by `http://host:port/json/list` containing the
+  target list.
+
+When `callback` is omitted a `Promise` object is returned.
+
+For example:
+
+```javascript
+const CDP = require('chrome-remote-interface');
+CDP.List(function (err, targets) {
+    if (!err) {
+        console.log(targets);
+    }
+});
+```
+
+### CDP.New([options], [callback])
+
+Create a new target/tab in the remote instance.
+
+`options` is an object with the following optional properties:
+
+- `host`: HTTP frontend host. Defaults to `localhost`;
+- `port`: HTTP frontend port. Defaults to `9222`;
+- `secure`: HTTPS/WSS frontend. Defaults to `false`;
+- `url`: URL to load in the new target/tab. Defaults to `about:blank`.
+
+`callback` is executed when the target is created, it gets the following
+arguments:
+
+- `err`: a `Error` object indicating the success status;
+- `target`: the object returned by `http://host:port/json/new` containing the
+  target.
+
+When `callback` is omitted a `Promise` object is returned.
+
+For example:
+
+```javascript
+const CDP = require('chrome-remote-interface');
+CDP.New(function (err, target) {
+    if (!err) {
+        console.log(target);
+    }
+});
+```
+
+### CDP.Activate([options], [callback])
+
+Activate an open target/tab of the remote instance.
+
+`options` is an object with the following properties:
+
+- `host`: HTTP frontend host. Defaults to `localhost`;
+- `port`: HTTP frontend port. Defaults to `9222`;
+- `secure`: HTTPS/WSS frontend. Defaults to `false`;
+- `id`: Target id. Required, no default.
+
+`callback` is executed when the response to the activation request is
+received. It gets the following arguments:
+
+- `err`: a `Error` object indicating the success status;
+
+When `callback` is omitted a `Promise` object is returned.
+
+For example:
+
+```javascript
+const CDP = require('chrome-remote-interface');
+CDP.Activate({'id': 'CC46FBFA-3BDA-493B-B2E4-2BE6EB0D97EC'}, function (err) {
+    if (!err) {
+        console.log('target is activated');
+    }
+});
+```
+
+### CDP.Close([options], [callback])
+
+Close an open target/tab of the remote instance.
+
+`options` is an object with the following properties:
+
+- `host`: HTTP frontend host. Defaults to `localhost`;
+- `port`: HTTP frontend port. Defaults to `9222`;
+- `secure`: HTTPS/WSS frontend. Defaults to `false`;
+- `id`: Target id. Required, no default.
+
+`callback` is executed when the response to the close request is received. It
+gets the following arguments:
+
+- `err`: a `Error` object indicating the success status;
+
+When `callback` is omitted a `Promise` object is returned.
+
+For example:
+
+```javascript
+const CDP = require('chrome-remote-interface');
+CDP.Close({'id': 'CC46FBFA-3BDA-493B-B2E4-2BE6EB0D97EC'}, function (err) {
+    if (!err) {
+        console.log('target is closing');
+    }
+});
+```
+
+Note that the callback is fired when the target is *queued* for removal, but the
+actual removal will occur asynchronously.
+
+### CDP.Version([options], [callback])
+
+Request version information from the remote instance.
+
+`options` is an object with the following optional properties:
+
+- `host`: HTTP frontend host. Defaults to `localhost`;
+- `port`: HTTP frontend port. Defaults to `9222`;
+- `secure`: HTTPS/WSS frontend. Defaults to `false`.
+
+`callback` is executed when the version information is correctly received, it
+gets the following arguments:
+
+- `err`: a `Error` object indicating the success status;
+- `info`: a JSON object returned by `http://host:port/json/version` containing
+  the version information.
+
+When `callback` is omitted a `Promise` object is returned.
+
+For example:
+
+```javascript
+const CDP = require('chrome-remote-interface');
+CDP.Version(function (err, info) {
+    if (!err) {
+        console.log(info);
+    }
+});
+```
+
+### Class: CDP
+
+#### Event: 'event'
+
+```javascript
+function (message) {}
+```
+
+Emitted when the remote instance sends any notification through the WebSocket.
+
+`message` is the object received, it has the following properties:
+
+- `method`: a string describing the notification (e.g.,
+  `'Network.requestWillBeSent'`);
+- `params`: an object containing the payload.
+
+Refer to the [Chrome Debugging Protocol] specification for more information.
+
+For example:
+
+```javascript
+client.on('event', function (message) {
+    if (message.method === 'Network.requestWillBeSent') {
+        console.log(message.params);
+    }
+});
+```
+
+#### Event: '`<domain>`.`<method>`'
+
+```javascript
+function (params) {}
+```
+
+Emitted when the remote instance sends a notification for `<domain>.<method>`
+through the WebSocket.
+
+`params` is an object containing the payload.
+
+This is just a utility event which allows to easily listen for specific
+notifications (see [`'event'`](#event-event)), for example:
+
+```javascript
+client.on('Network.requestWillBeSent', console.log);
+```
+
+#### Event: 'ready'
+
+```javascript
+function () {}
+```
+
+Emitted every time that there are no more pending commands waiting for a
+response from the remote instance. The interaction is asynchronous so the only
+way to serialize a sequence of commands is to use the callback provided by
+the [`send`](#clientsendmethod-params-callback) method. This event acts as a
+barrier and it is useful to avoid the *callback hell* in certain simple
+situations.
+
+Users are encouraged to extensively check the response of each method and should
+prefer the promises API when dealing with complex asynchronous program flows.
+
+For example to load a URL only after having enabled the notifications of both
+`Network` and `Page` domains:
+
+```javascript
+client.Network.enable();
+client.Page.enable();
+client.once('ready', function () {
+    client.Page.navigate({'url': 'https://github.com'});
+});
+```
+
+In this particular case, not enforcing this kind of serialization may cause that
+the remote instance does not properly deliver the desired notifications the
+client.
+
+
+#### Event: 'disconnect'
+
+```javascript
+function () {}
+```
+
+Emitted when the instance closes the WebSocket connection.
+
+This may happen for example when the user opens DevTools or when the tab is
+closed.
+
+#### client.send(method, [params], [callback])
+
+Issue a command to the remote instance.
+
+`method` is a string describing the command.
+
+`params` is an object containing the payload.
+
+`callback` is executed when the remote instance sends a response to this
+command, it gets the following arguments:
+
+- `error`: a boolean value indicating the success status, as reported by the
+  remote instance;
+- `response`: an object containing either the response (`result` field, if
+  `error === false`) or the indication of the error (`error` field, if `error
+  === true`).
+
+When `callback` is omitted a `Promise` object is returned instead, with the
+fulfilled/rejected states implemented according to the `error` parameter.
+
+Note that the field `id` mentioned in the [Chrome Debugging Protocol]
+specification is managed internally and it is not exposed to the user.
+
+For example:
+
+```javascript
+client.send('Page.navigate', {'url': 'https://github.com'}, console.log);
+```
+
+#### client.`<domain>`.`<method>`([params], [callback])
+
+Just a shorthand for:
+
+```javascript
+client.send('<domain>.<method>', params, callback);
+```
+
+For example:
+
+```javascript
+client.Page.navigate({'url': 'https://github.com'}, console.log);
+```
+
+#### client.`<domain>`.`<event>`([callback])
+
+Just a shorthand for:
+
+```javascript
+client.on('<domain>.<event>', callback);
+```
+
+The only difference is that when `callback` is omitted the event is registered
+only once and a `Promise` object is returned.
+
+For example:
+
+```javascript
+client.Network.requestWillBeSent(console.log);
+```
+
+#### client.close([callback])
+
+Close the connection to the remote instance.
+
+`callback` is executed when the WebSocket is successfully closed.
+
+When `callback` is omitted a `Promise` object is returned.
+
+Contributors
+------------
+
+- [Andrey Sidorov](https://github.com/sidorares)
+- [Greg Cochard](https://github.com/gcochard)
+
+Resources
+---------
+
+- [Chrome Debugging Protocol]
+- [Chrome Debugging Protocol Google group](https://groups.google.com/forum/#!forum/chrome-debugging-protocol)
+- [devtools-protocol official repo](https://github.com/ChromeDevTools/devtools-protocol)
+- [Showcase Chrome Debugging Protocol Clients](https://developer.chrome.com/devtools/docs/debugging-clients)
+- [Awesome chrome-devtools](https://github.com/ChromeDevTools/awesome-chrome-devtools)
+
+[Chrome Debugging Protocol]: https://chromedevtools.github.io/devtools-protocol/
diff --git a/lib/opal/cli_runners/node_modules/chrome-remote-interface/bin/client.js b/lib/opal/cli_runners/node_modules/chrome-remote-interface/bin/client.js
new file mode 100755
index 00000000..289e09eb
--- /dev/null
+++ b/lib/opal/cli_runners/node_modules/chrome-remote-interface/bin/client.js
@@ -0,0 +1,326 @@
+#!/usr/bin/env node
+
+'use strict';
+
+const repl = require('repl');
+const util = require('util');
+const fs = require('fs');
+const path = require('path');
+
+const program = require('commander');
+
+const CDP = require('../');
+
+function display(object) {
+    return util.inspect(object, {
+        'colors': process.stdout.isTTY,
+        'depth': null
+    });
+}
+
+function toJSON(object) {
+    return JSON.stringify(object, null, 4);
+}
+
+function inheritProperties(from, to) {
+    Object.keys(from).forEach(function (property) {
+        to[property] = from[property];
+    });
+}
+
+///
+
+function inspect(target, args, options) {
+    options.remote = args.remote;
+    // otherwise the active target
+    if (target) {
+        if (args.webSocket) {
+            // by WebSocket URL
+            options.target = target;
+        } else {
+            // by target id
+            options.target = function (targets) {
+                return targets.findIndex(function (target) {
+                    return target.id === target;
+                });
+            };
+        }
+    }
+
+    if (args.protocol) {
+        options.protocol = JSON.parse(fs.readFileSync(args.protocol));
+    }
+
+    CDP(options, function (client) {
+        // keep track of registered events
+        const registeredEvents = {};
+
+        const cdpRepl = repl.start({
+            'prompt': '\x1b[32m>>>\x1b[0m ',
+            'ignoreUndefined': true,
+            'writer': display
+        });
+
+        const homePath = process.env.HOME || process.env.USERPROFILE;
+        const historyFile = path.join(homePath, '.cri_history');
+        const historySize = 10000;
+
+        function loadHistory() {
+            // attempt to open the history file
+            let fd;
+            try {
+                fd = fs.openSync(historyFile, 'r');
+            } catch (err) {
+                return; // no history file present
+            }
+            // populate the REPL history
+            fs.readFileSync(fd, 'utf8')
+                .split('\n')
+                .filter(function (entry) {
+                    return entry.trim();
+                })
+                .reverse() // to be compatible with repl.history files
+                .forEach(function (entry) {
+                    cdpRepl.history.push(entry);
+                });
+        }
+
+        function saveHistory() {
+            // only store the last chunk
+            const entries = cdpRepl.history.slice(0, historySize).reverse().join('\n');
+            fs.writeFileSync(historyFile, entries + '\n');
+        }
+
+        function overridePrompt(string) {
+            // hack to get rid of the prompt (clean line and reposition cursor)
+            console.log('\x1b[2K\x1b[G%s', string);
+            cdpRepl.displayPrompt(true);
+        }
+
+        function overrideCommand(command) {
+            // hard code a callback to display the result
+            const override = function (params) {
+                command(params, function (error, response) {
+                    const repr = {};
+                    repr[error ? 'error' : 'result'] = response;
+                    overridePrompt(display(repr));
+                });
+            };
+            // inherit the doc decorations
+            inheritProperties(command, override);
+            return override;
+        }
+
+        function overrideEvent(client, domainName, itemName) {
+            const event = client[domainName][itemName];
+            const eventName = domainName + '.' + itemName;
+            // hard code a callback to display the event data
+            const override = function (filter) {
+                // remove all the listeners (just one actually) anyway
+                client.removeAllListeners(eventName);
+                const status = {};
+                // a filter will always enable/update the listener
+                if (!filter && registeredEvents[eventName]) {
+                    delete registeredEvents[eventName];
+                    status[eventName] = false;
+                } else {
+                    // use the filter (or true) as a status token
+                    const statusToken = (filter ? filter.toString() : true);
+                    status[eventName] = registeredEvents[eventName] = statusToken;
+                    event(function (params) {
+                        const repr = {};
+                        if (filter) {
+                            params = filter(params);
+                        }
+                        repr[eventName] = params;
+                        overridePrompt(display(repr));
+                    });
+                }
+                // show the registration status to the user
+                return status;
+            };
+            // inherit the doc decorations
+            inheritProperties(event, override);
+            return override;
+        }
+
+        // enable history
+        loadHistory();
+
+        // disconnect on exit
+        cdpRepl.on('exit', function () {
+            console.log();
+            client.close();
+            saveHistory();
+        });
+
+        // exit on disconnection
+        client.on('disconnect', function () {
+            console.error('Disconnected.');
+            saveHistory();
+            process.exit(1);
+        });
+
+        // add protocol API
+        client.protocol.domains.forEach(function (domainObject) {
+            // walk the domain names
+            const domainName = domainObject.domain;
+            cdpRepl.context[domainName] = {};
+            Object.keys(client[domainName]).forEach(function (itemName) {
+                // walk the items in the domain and override commands and events
+                let item = client[domainName][itemName];
+                switch (item.category) {
+                case 'command':
+                    item = overrideCommand(item);
+                    break;
+                case 'event':
+                    item = overrideEvent(client, domainName, itemName);
+                    break;
+                }
+                cdpRepl.context[domainName][itemName] = item;
+            });
+        });
+    }).on('error', function (err) {
+        console.error('Cannot connect to remote endpoint:', err.toString());
+    });
+}
+
+function list(options) {
+    CDP.List(options, function (err, targets) {
+        if (err) {
+            console.error(err.toString());
+            process.exit(1);
+        }
+        console.log(toJSON(targets));
+    });
+}
+
+function _new(url, options) {
+    options.url = url;
+    CDP.New(options, function (err, target) {
+        if (err) {
+            console.error(err.toString());
+            process.exit(1);
+        }
+        console.log(toJSON(target));
+    });
+}
+
+function activate(args, options) {
+    options.id = args;
+    CDP.Activate(options, function (err) {
+        if (err) {
+            console.error(err.toString());
+            process.exit(1);
+        }
+    });
+}
+
+function close(args, options) {
+    options.id = args;
+    CDP.Close(options, function (err) {
+        if (err) {
+            console.error(err.toString());
+            process.exit(1);
+        }
+    });
+}
+
+function version(options) {
+    CDP.Version(options, function (err, info) {
+        if (err) {
+            console.error(err.toString());
+            process.exit(1);
+        }
+        console.log(toJSON(info));
+    });
+}
+
+function protocol(args, options) {
+    options.remote = args.remote;
+    CDP.Protocol(options, function (err, protocol) {
+        if (err) {
+            console.error(err.toString());
+            process.exit(1);
+        }
+        console.log(toJSON(protocol));
+    });
+}
+
+///
+
+let action;
+
+program
+    .option('-t, --host <host>', 'HTTP frontend host')
+    .option('-p, --port <port>', 'HTTP frontend port')
+    .option('-s, --secure', 'HTTPS/WSS frontend');
+
+program
+    .command('inspect [<target>]')
+    .description('inspect a target (defaults to the first available target)')
+    .option('-w, --web-socket', 'interpret <target> as a WebSocket URL instead of a target id')
+    .option('-j, --protocol <file.json>', 'Chrome Debugging Protocol descriptor (overrides `--remote`)')
+    .option('-r, --remote', 'Attempt to fetch the protocol descriptor remotely')
+    .action(function (target, args) {
+        action = inspect.bind(null, target, args);
+    });
+
+program
+    .command('list')
+    .description('list all the available targets/tabs')
+    .action(function () {
+        action = list;
+    });
+
+program
+    .command('new [<url>]')
+    .description('create a new target/tab')
+    .action(function (url) {
+        action = _new.bind(null, url);
+    });
+
+program
+    .command('activate <id>')
+    .description('activate a target/tab by id')
+    .action(function (id) {
+        action = activate.bind(null, id);
+    });
+
+program
+    .command('close <id>')
+    .description('close a target/tab by id')
+    .action(function (id) {
+        action = close.bind(null, id);
+    });
+
+program
+    .command('version')
+    .description('show the browser version')
+    .action(function () {
+        action = version;
+    });
+
+program
+    .command('protocol')
+    .description('show the currently available protocol descriptor')
+    .option('-r, --remote', 'Attempt to fetch the protocol descriptor remotely')
+    .action(function (args) {
+        action = protocol.bind(null, args);
+    });
+
+program.parse(process.argv);
+
+// common options
+const options = {
+    'host': program.host,
+    'port': program.port,
+    'secure': program.secure
+};
+
+if (action) {
+    action(options);
+} else {
+    program.outputHelp();
+    process.exit(1);
+}
diff --git a/lib/opal/cli_runners/node_modules/chrome-remote-interface/chrome-remote-interface.js b/lib/opal/cli_runners/node_modules/chrome-remote-interface/chrome-remote-interface.js
new file mode 100644
index 00000000..621cb294
--- /dev/null
+++ b/lib/opal/cli_runners/node_modules/chrome-remote-interface/chrome-remote-interface.js
@@ -0,0 +1,11 @@
+module.exports=function(e){function t(r){if(n[r])return n[r].exports;var i=n[r]={exports:{},id:r,loaded:!1};return e[r].call(i.exports,i,i.exports,t),i.loaded=!0,i.exports}var n={};return t.m=e,t.c=n,t.p="",t(0)}([function(e,t,n){(function(t){"use strict";var r=n(2),i=n(3),o=n(43);e.exports=function(e,n){"function"==typeof e&&(n=e,e=void 0);var i=new r;return"function"==typeof n?(t.nextTick(function(){new o(e,i)}),i.once("connect",n)):new Promise(function(t,n){i.once("connect",t),i.once("error",n),new o(e,i)})},e.exports.listTabs=i.List,e.exports.spawnTab=i.New,e.exports.closeTab=i.Close,e.exports.Protocol=i.Protocol,e.exports.List=i.List,e.exports.New=i.New,e.exports.Activate=i.Activate,e.exports.Close=i.Close,e.exports.Version=i.Version}).call(t,n(1))},function(e,t){function n(){throw new Error("setTimeout has not been defined")}function r(){throw new Error("clearTimeout has not been defined")}function i(e){if(d===setTimeout)return setTimeout(e,0);if((d===n||!d)&&setTimeout)return d=setTimeout,setTimeout(e,0);try{return d(e,0)}catch(t){try{return d.call(null,e,0)}catch(t){return d.call(this,e,0)}}}function o(e){if(l===clearTimeout)return clearTimeout(e);if((l===r||!l)&&clearTimeout)return l=clearTimeout,clearTimeout(e);try{return l(e)}catch(t){try{return l.call(null,e)}catch(t){return l.call(this,e)}}}function a(){f&&u&&(f=!1,u.length?h=u.concat(h):y=-1,h.length&&s())}function s(){if(!f){var e=i(a);f=!0;for(var t=h.length;t;){for(u=h,h=[];++y<t;)u&&u[y].run();y=-1,t=h.length}u=null,f=!1,o(e)}}function p(e,t){this.fun=e,this.array=t}function c(){}var d,l,m=e.exports={};!function(){try{d="function"==typeof setTimeout?setTimeout:n}catch(e){d=n}try{l="function"==typeof clearTimeout?clearTimeout:r}catch(e){l=r}}();var u,h=[],f=!1,y=-1;m.nextTick=function(e){var t=new Array(arguments.length-1);if(arguments.length>1)for(var n=1;n<arguments.length;n++)t[n-1]=arguments[n];h.push(new p(e,t)),1!==h.length||f||i(s)},p.prototype.run=function(){this.fun.apply(null,this.array)},m.title="browser",m.browser=!0,m.env={},m.argv=[],m.version="",m.versions={},m.on=c,m.addListener=c,m.once=c,m.off=c,m.removeListener=c,m.removeAllListeners=c,m.emit=c,m.prependListener=c,m.prependOnceListener=c,m.listeners=function(e){return[]},m.binding=function(e){throw new Error("process.binding is not supported")},m.cwd=function(){return"/"},m.chdir=function(e){throw new Error("process.chdir is not supported")},m.umask=function(){return 0}},function(e,t){function n(){this._events=this._events||{},this._maxListeners=this._maxListeners||void 0}function r(e){return"function"==typeof e}function i(e){return"number"==typeof e}function o(e){return"object"==typeof e&&null!==e}function a(e){return void 0===e}e.exports=n,n.EventEmitter=n,n.prototype._events=void 0,n.prototype._maxListeners=void 0,n.defaultMaxListeners=10,n.prototype.setMaxListeners=function(e){if(!i(e)||e<0||isNaN(e))throw TypeError("n must be a positive number");return this._maxListeners=e,this},n.prototype.emit=function(e){var t,n,i,s,p,c;if(this._events||(this._events={}),"error"===e&&(!this._events.error||o(this._events.error)&&!this._events.error.length)){if(t=arguments[1],t instanceof Error)throw t;var d=new Error('Uncaught, unspecified "error" event. 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t,n;if(!this._events)return this;if(!this._events.removeListener)return 0===arguments.length?this._events={}:this._events[e]&&delete this._events[e],this;if(0===arguments.length){for(t in this._events)"removeListener"!==t&&this.removeAllListeners(t);return this.removeAllListeners("removeListener"),this._events={},this}if(n=this._events[e],r(n))this.removeListener(e,n);else if(n)for(;n.length;)this.removeListener(e,n[n.length-1]);return delete this._events[e],this},n.prototype.listeners=function(e){var t;return t=this._events&&this._events[e]?r(this._events[e])?[this._events[e]]:this._events[e].slice():[]},n.prototype.listenerCount=function(e){if(this._events){var t=this._events[e];if(r(t))return 1;if(t)return t.length}return 0},n.listenerCount=function(e,t){return e.listenerCount(t)}},function(e,t,n){(function(t){"use strict";function r(e,t){e.host=e.host||d.HOST,e.port=e.port||d.PORT,e.secure=!!e.secure,l(e.secure?c:p,e,t)}function i(e){return function(t,n){return"function"==typeof t&&(n=t,t=void 0),t=t||{},"function"!=typeof n?new Promise(function(n,r){e(t,function(e,t){e?r(e):n(t)})}):void e(t,n)}}function o(e){return e.split(".").map(function(e){return parseInt(e)})}function a(e,n,r){var i=n["WebKit-Version"],a=n["V8-Version"],s=i.match(/\s\(@(\b[0-9a-f]{5,40}\b)/),p=s[1],d=p<=202666,m=void 0;if(d)m=["https://src.chromium.org/blink/trunk/Source/devtools/protocol.json?p="+p];else{var u="53.0.2758.1",h="55.0.2854.3",f=o(n.Browser.split("/")[1]),y=f[2]<=o(u)[2],g=f[2]<=o(h)[2];y?m=["https://chromium.googlesource.com/chromium/src/+/"+p+"/third_party/WebKit/Source/devtools/protocol.json?format=TEXT"]:g?m=["https://chromium.googlesource.com/chromium/src/+/"+p+"/third_party/WebKit/Source/core/inspector/browser_protocol.json?format=TEXT","https://chromium.googlesource.com/chromium/src/+/"+p+"/third_party/WebKit/Source/platform/v8_inspector/js_protocol.json?format=TEXT"]:a?m=["https://chromium.googlesource.com/chromium/src/+/"+p+"/third_party/WebKit/Source/core/inspector/browser_protocol.json?format=TEXT","https://chromium.googlesource.com/v8/v8/+/"+a+"/src/inspector/js_protocol.json?format=TEXT"]:(console.error("Warning: the protocol might be outdated, see: https://groups.google.com/d/topic/chrome-debugging-protocol/HjyOKainKus/discussion"),m=["https://chromium.googlesource.com/chromium/src/+/"+p+"/third_party/WebKit/Source/core/inspector/browser_protocol.json?format=TEXT","https://chromium.googlesource.com/chromium/src/+/"+h+"/third_party/WebKit/Source/platform/v8_inspector/js_protocol.json?format=TEXT"])}var b=[];m.forEach(function(e){l(c,e,function(e,n){var i=void 0;if(!e)try{d||(n=new t(n,"base64").toString()),i=JSON.parse(n)}catch(e){}if(b.push(i),b.length===m.length){if(b.indexOf(void 0)!==-1)return void r(new Error("Cannot fetch from Chromium repo"));b.forEach(function(e,t){0!==t&&Array.prototype.push.apply(b[0].domains,e.domains)}),r(null,b[0])}})})}function s(e,t,n){e.path="/json/protocol",r(e,function(e,t){e?n(e):n(null,JSON.parse(t))})}var p=n(8),c=n(39),d=n(40),l=n(41);e.exports.Protocol=i(function(t,r){if(!t.remote){var i=n(42);return void r(null,{remote:!1,descriptor:i})}e.exports.Version(t,function(e,n){if(e)return void 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Omitting any of the parameters emulates position unavailable.",parameters:[{name:"latitude",type:"number",optional:!0,description:"Mock latitude"},{name:"longitude",type:"number",optional:!0,description:"Mock longitude"},{name:"accuracy",type:"number",optional:!0,description:"Mock accuracy"}],redirect:"Emulation"},{name:"clearGeolocationOverride",description:"Clears the overriden Geolocation Position and Error.",redirect:"Emulation"},{name:"setDeviceOrientationOverride",description:"Overrides the Device Orientation.",parameters:[{name:"alpha",type:"number",description:"Mock alpha"},{name:"beta",type:"number",description:"Mock beta"},{name:"gamma",type:"number",description:"Mock gamma"}],redirect:"DeviceOrientation",experimental:!0},{name:"clearDeviceOrientationOverride",description:"Clears the overridden Device Orientation.",redirect:"DeviceOrientation",experimental:!0},{name:"setTouchEmulationEnabled",parameters:[{name:"enabled",type:"boolean",description:"Whether the touch event emulation should be enabled."},{name:"configuration",type:"string",enum:["mobile","desktop"],optional:!0,description:"Touch/gesture events configuration. Default: current platform."}],description:"Toggles mouse event-based touch event emulation.",experimental:!0,redirect:"Emulation"},{name:"captureScreenshot",description:"Capture page screenshot.",parameters:[{name:"format",type:"string",optional:!0,enum:["jpeg","png"],description:"Image compression format (defaults to png)."},{name:"quality",type:"integer",optional:!0,description:"Compression quality from range [0..100] (jpeg only)."},{name:"fromSurface",type:"boolean",optional:!0,description:"Capture the screenshot from the surface, rather than the view. Defaults to true.",experimental:!0}],returns:[{name:"data",type:"string",description:"Base64-encoded image data."}],experimental:!0},{name:"printToPDF",description:"Print page as PDF.",parameters:[{name:"landscape",type:"boolean",optional:!0,description:"Paper orientation. Defaults to false."},{name:"displayHeaderFooter",type:"boolean",optional:!0,description:"Display header and footer. Defaults to false."},{name:"printBackground",type:"boolean",optional:!0,description:"Print background graphics. Defaults to false."},{name:"scale",type:"number",optional:!0,description:"Scale of the webpage rendering. Defaults to 1."},{name:"paperWidth",type:"number",optional:!0,description:"Paper width in inches. Defaults to 8.5 inches."},{name:"paperHeight",type:"number",optional:!0,description:"Paper height in inches. Defaults to 11 inches."},{name:"marginTop",type:"number",optional:!0,description:"Top margin in inches. Defaults to 1cm (~0.4 inches)."},{name:"marginBottom",type:"number",optional:!0,description:"Bottom margin in inches. Defaults to 1cm (~0.4 inches)."},{name:"marginLeft",type:"number",optional:!0,description:"Left margin in inches. Defaults to 1cm (~0.4 inches)."},{name:"marginRight",type:"number",optional:!0,description:"Right margin in inches. Defaults to 1cm (~0.4 inches)."},{name:"pageRanges",type:"string",optional:!0,description:"Paper ranges to print, e.g., '1-5, 8, 11-13'. Defaults to the empty string, which means print all pages."}],returns:[{name:"data",type:"string",description:"Base64-encoded pdf data."}],experimental:!0},{name:"startScreencast",description:"Starts sending each frame using the <code>screencastFrame</code> event.",parameters:[{name:"format",type:"string",optional:!0,enum:["jpeg","png"],description:"Image compression format."},{name:"quality",type:"integer",optional:!0,description:"Compression quality from range [0..100]."},{name:"maxWidth",type:"integer",optional:!0,description:"Maximum screenshot width."},{name:"maxHeight",type:"integer",optional:!0,description:"Maximum screenshot height."},{name:"everyNthFrame",type:"integer",optional:!0,description:"Send every n-th frame."}],experimental:!0},{name:"stopScreencast",description:"Stops sending each frame in the <code>screencastFrame</code>.",experimental:!0},{name:"screencastFrameAck",description:"Acknowledges that a screencast frame has been received by the frontend.",parameters:[{name:"sessionId",type:"integer",description:"Frame number."}],experimental:!0},{name:"handleJavaScriptDialog",description:"Accepts or dismisses a JavaScript initiated dialog (alert, confirm, prompt, or onbeforeunload).",parameters:[{name:"accept",type:"boolean",description:"Whether to accept or dismiss the dialog."},{name:"promptText",type:"string",optional:!0,description:"The text to enter into the dialog prompt before accepting. Used only if this is a prompt dialog."}]},{name:"getAppManifest",experimental:!0,returns:[{name:"url",type:"string",description:"Manifest location."},{name:"errors",type:"array",items:{$ref:"AppManifestError"}},{name:"data",type:"string",optional:!0,description:"Manifest content."}]},{name:"requestAppBanner",experimental:!0},{name:"setControlNavigations",parameters:[{name:"enabled",type:"boolean"}],description:"Toggles navigation throttling which allows programatic control over navigation and redirect response.",experimental:!0},{name:"processNavigation",parameters:[{name:"response",$ref:"NavigationResponse"},{name:"navigationId",type:"integer"}],description:"Should be sent in response to a navigationRequested or a redirectRequested event, telling the browser how to handle the navigation.",experimental:!0},{name:"getLayoutMetrics",description:"Returns metrics relating to the layouting of the page, such as viewport bounds/scale.",experimental:!0,returns:[{name:"layoutViewport",$ref:"LayoutViewport",description:"Metrics relating to the layout viewport."},{name:"visualViewport",$ref:"VisualViewport",description:"Metrics relating to the visual viewport."},{name:"contentSize",$ref:"DOM.Rect",description:"Size of scrollable area."}]},{name:"createIsolatedWorld",description:"Creates an isolated world for the given frame.",experimental:!0,parameters:[{name:"frameId",$ref:"FrameId",description:"Id of the frame in which the isolated world should be created."},{name:"worldName",type:"string",optional:!0,description:"An optional name which is reported in the Execution Context."},{name:"grantUniveralAccess",type:"boolean",optional:!0,description:"Whether or not universal access should be granted to the isolated world. This is a powerful option, use with caution."}]}],events:[{name:"domContentEventFired",parameters:[{name:"timestamp",type:"number"}]},{name:"loadEventFired",parameters:[{name:"timestamp",type:"number"}]},{name:"frameAttached",description:"Fired when frame has been attached to its parent.",parameters:[{name:"frameId",$ref:"FrameId",description:"Id of the frame that has been attached."},{name:"parentFrameId",$ref:"FrameId",description:"Parent frame identifier."},{name:"stack",$ref:"Runtime.StackTrace",optional:!0,description:"JavaScript stack trace of when frame was attached, only set if frame initiated from script.",experimental:!0}]},{name:"frameNavigated",description:"Fired once navigation of the frame has completed. Frame is now associated with the new loader.",parameters:[{name:"frame",$ref:"Frame",description:"Frame object."}]},{name:"frameDetached",description:"Fired when frame has been detached from its parent.",parameters:[{name:"frameId",$ref:"FrameId",description:"Id of the frame that has been detached."}]},{name:"frameStartedLoading",description:"Fired when frame has started loading.",parameters:[{name:"frameId",$ref:"FrameId",description:"Id of the frame that has started loading."}],experimental:!0},{name:"frameStoppedLoading",description:"Fired when frame has stopped loading.",parameters:[{name:"frameId",$ref:"FrameId",description:"Id of the frame that has stopped loading."}],experimental:!0},{name:"frameScheduledNavigation",description:"Fired when frame schedules a potential navigation.",parameters:[{name:"frameId",$ref:"FrameId",description:"Id of the frame that has scheduled a navigation."},{name:"delay",type:"number",description:"Delay (in seconds) until the navigation is scheduled to begin. The navigation is not guaranteed to start."}],experimental:!0},{name:"frameClearedScheduledNavigation",description:"Fired when frame no longer has a scheduled navigation.",parameters:[{name:"frameId",$ref:"FrameId",description:"Id of the frame that has cleared its scheduled navigation."}],experimental:!0},{name:"frameResized",experimental:!0},{name:"javascriptDialogOpening",description:"Fired when a JavaScript initiated dialog (alert, confirm, prompt, or onbeforeunload) is about to open.",parameters:[{name:"message",type:"string",description:"Message that will be displayed by the dialog."},{name:"type",$ref:"DialogType",description:"Dialog type."}]},{name:"javascriptDialogClosed",description:"Fired when a JavaScript initiated dialog (alert, confirm, prompt, or onbeforeunload) has been closed.",parameters:[{name:"result",type:"boolean",description:"Whether dialog was confirmed."}]},{name:"screencastFrame",description:"Compressed image data requested by the <code>startScreencast</code>.",parameters:[{name:"data",type:"string",description:"Base64-encoded compressed image."},{name:"metadata",$ref:"ScreencastFrameMetadata",description:"Screencast frame metadata."},{name:"sessionId",type:"integer",description:"Frame number."}],experimental:!0},{name:"screencastVisibilityChanged",description:"Fired when the page with currently enabled screencast was shown or hidden </code>.",parameters:[{name:"visible",type:"boolean",description:"True if the page is visible."}],experimental:!0},{name:"interstitialShown",description:"Fired when interstitial page was shown"},{name:"interstitialHidden",description:"Fired when interstitial page was hidden"},{name:"navigationRequested",description:"Fired when a navigation is started if navigation throttles are enabled.  The navigation will be deferred until processNavigation is called.",parameters:[{name:"isInMainFrame",type:"boolean",description:"Whether the navigation is taking place in the main frame or in a subframe."},{name:"isRedirect",type:"boolean",description:"Whether the navigation has encountered a server redirect or not."},{name:"navigationId",type:"integer"},{name:"url",type:"string",description:"URL of requested navigation."}]}]},{domain:"Overlay",description:"This domain provides various functionality related to drawing atop the inspected page.",dependencies:["DOM","Page","Runtime"],experimental:!0,types:[{id:"HighlightConfig",type:"object",properties:[{name:"showInfo",type:"boolean",optional:!0,description:"Whether the node info tooltip should be shown (default: false)."},{name:"showRulers",type:"boolean",optional:!0,description:"Whether the rulers should be shown (default: false)."},{name:"showExtensionLines",type:"boolean",optional:!0,description:"Whether the extension lines from node to the rulers should be shown (default: false)."},{name:"displayAsMaterial",type:"boolean",optional:!0},{name:"contentColor",$ref:"DOM.RGBA",optional:!0,description:"The content box highlight fill color (default: transparent)."},{name:"paddingColor",$ref:"DOM.RGBA",optional:!0,description:"The padding highlight fill color (default: transparent)."},{name:"borderColor",$ref:"DOM.RGBA",optional:!0,description:"The border highlight fill color (default: transparent)."},{name:"marginColor",$ref:"DOM.RGBA",optional:!0,description:"The margin highlight fill color (default: transparent)."},{name:"eventTargetColor",$ref:"DOM.RGBA",optional:!0,description:"The event target element highlight fill color (default: transparent)."},{name:"shapeColor",$ref:"DOM.RGBA",optional:!0,description:"The shape outside fill color (default: transparent)."},{name:"shapeMarginColor",$ref:"DOM.RGBA",optional:!0,description:"The shape margin fill color (default: transparent)."},{name:"selectorList",type:"string",optional:!0,description:"Selectors to highlight relevant nodes."}],description:"Configuration data for the highlighting of page elements."},{id:"InspectMode",type:"string",enum:["searchForNode","searchForUAShadowDOM","none"]}],commands:[{name:"enable",description:"Enables domain notifications."},{name:"disable",description:"Disables domain notifications."},{name:"setShowPaintRects",description:"Requests that backend shows paint rectangles",parameters:[{name:"result",type:"boolean",description:"True for showing paint rectangles"}]},{name:"setShowDebugBorders",description:"Requests that backend shows debug borders on layers",parameters:[{name:"show",type:"boolean",description:"True for showing debug borders"}]},{name:"setShowFPSCounter",description:"Requests that backend shows the FPS counter",parameters:[{name:"show",type:"boolean",description:"True for showing the FPS counter"}]},{name:"setShowScrollBottleneckRects",description:"Requests that backend shows scroll bottleneck rects",parameters:[{name:"show",type:"boolean",description:"True for showing scroll bottleneck rects"}]},{name:"setShowViewportSizeOnResize",description:"Paints viewport size upon main frame resize.",parameters:[{name:"show",type:"boolean",description:"Whether to paint size or not."}]},{name:"setPausedInDebuggerMessage",parameters:[{name:"message",type:"string",optional:!0,description:"The message to display, also triggers resume and step over controls."}]},{name:"setSuspended",parameters:[{name:"suspended",type:"boolean",description:"Whether overlay should be suspended and not consume any resources until resumed."}]},{name:"setInspectMode",description:"Enters the 'inspect' mode. In this mode, elements that user is hovering over are highlighted. Backend then generates 'inspectNodeRequested' event upon element selection.",parameters:[{name:"mode",$ref:"InspectMode",description:"Set an inspection mode."},{name:"highlightConfig",$ref:"HighlightConfig",optional:!0,description:"A descriptor for the highlight appearance of hovered-over nodes. May be omitted if <code>enabled == false</code>."}]},{name:"highlightRect",description:"Highlights given rectangle. Coordinates are absolute with respect to the main frame viewport.",parameters:[{name:"x",type:"integer",description:"X coordinate"},{name:"y",type:"integer",description:"Y coordinate"},{name:"width",type:"integer",description:"Rectangle width"},{name:"height",type:"integer",description:"Rectangle height"},{name:"color",$ref:"DOM.RGBA",optional:!0,description:"The highlight fill color (default: transparent)."},{name:"outlineColor",$ref:"DOM.RGBA",optional:!0,description:"The highlight outline color (default: transparent)."}]},{name:"highlightQuad",description:"Highlights given quad. Coordinates are absolute with respect to the main frame viewport.",parameters:[{name:"quad",$ref:"DOM.Quad",description:"Quad to highlight"},{name:"color",$ref:"DOM.RGBA",optional:!0,description:"The highlight fill color (default: transparent)."},{name:"outlineColor",$ref:"DOM.RGBA",optional:!0,description:"The highlight outline color (default: transparent)."}]},{name:"highlightNode",description:"Highlights DOM node with given id or with the given JavaScript object wrapper. Either nodeId or objectId must be specified.",parameters:[{name:"highlightConfig",$ref:"HighlightConfig",description:"A descriptor for the highlight appearance."},{name:"nodeId",$ref:"DOM.NodeId",optional:!0,description:"Identifier of the node to highlight."},{name:"backendNodeId",$ref:"DOM.BackendNodeId",optional:!0,description:"Identifier of the backend node to highlight."},{name:"objectId",$ref:"Runtime.RemoteObjectId",optional:!0,description:"JavaScript object id of the node to be highlighted."}]},{name:"highlightFrame",description:"Highlights owner element of the frame with given id.",parameters:[{name:"frameId",$ref:"Page.FrameId",description:"Identifier of the frame to highlight."},{name:"contentColor",$ref:"DOM.RGBA",optional:!0,description:"The content box highlight fill color (default: transparent)."},{name:"contentOutlineColor",$ref:"DOM.RGBA",optional:!0,description:"The content box highlight outline color (default: transparent)."}]},{name:"hideHighlight",description:"Hides any highlight."},{name:"getHighlightObjectForTest",description:"For testing.",parameters:[{name:"nodeId",$ref:"DOM.NodeId",description:"Id of the node to get highlight object for."}],returns:[{name:"highlight",type:"object",description:"Highlight data for the node."}]}],events:[{name:"nodeHighlightRequested",description:"Fired when the node should be highlighted. This happens after call to <code>setInspectMode</code>.",parameters:[{name:"nodeId",$ref:"DOM.NodeId"}]},{name:"inspectNodeRequested",description:"Fired when the node should be inspected. This happens after call to <code>setInspectMode</code> or when user manually inspects an element.",parameters:[{name:"backendNodeId",$ref:"DOM.BackendNodeId",description:"Id of the node to inspect."}]}]},{domain:"Emulation",description:"This domain emulates different environments for the page.",dependencies:["DOM"],types:[{id:"ScreenOrientation",type:"object",description:"Screen orientation.",properties:[{name:"type",type:"string",enum:["portraitPrimary","portraitSecondary","landscapePrimary","landscapeSecondary"],description:"Orientation type."},{name:"angle",type:"integer",description:"Orientation angle."}]},{id:"VirtualTimePolicy",type:"string",enum:["advance","pause","pauseIfNetworkFetchesPending"],experimental:!0,description:"advance: If the scheduler runs out of immediate work, the virtual time base may fast forward to allow the next delayed task (if any) to run; pause: The virtual time base may not advance; pauseIfNetworkFetchesPending: The virtual time base may not advance if there are any pending resource fetches."}],commands:[{name:"setDeviceMetricsOverride",description:'Overrides the values of device screen dimensions (window.screen.width, window.screen.height, window.innerWidth, window.innerHeight, and "device-width"/"device-height"-related CSS media query results).',parameters:[{name:"width",type:"integer",description:"Overriding width value in pixels (minimum 0, maximum 10000000). 0 disables the override."},{name:"height",type:"integer",description:"Overriding height value in pixels (minimum 0, maximum 10000000). 0 disables the override."},{name:"deviceScaleFactor",type:"number",description:"Overriding device scale factor value. 0 disables the override."},{name:"mobile",type:"boolean",description:"Whether to emulate mobile device. This includes viewport meta tag, overlay scrollbars, text autosizing and more."},{name:"fitWindow",type:"boolean",description:"Whether a view that exceeds the available browser window area should be scaled down to fit."},{name:"scale",type:"number",optional:!0,experimental:!0,description:"Scale to apply to resulting view image. Ignored in |fitWindow| mode."},{name:"offsetX",type:"number",optional:!0,deprecated:!0,experimental:!0,description:"Not used."},{name:"offsetY",type:"number",optional:!0,deprecated:!0,experimental:!0,description:"Not used."},{name:"screenWidth",type:"integer",optional:!0,experimental:!0,description:"Overriding screen width value in pixels (minimum 0, maximum 10000000). Only used for |mobile==true|."},{name:"screenHeight",type:"integer",optional:!0,experimental:!0,description:"Overriding screen height value in pixels (minimum 0, maximum 10000000). Only used for |mobile==true|."},{name:"positionX",type:"integer",optional:!0,experimental:!0,description:"Overriding view X position on screen in pixels (minimum 0, maximum 10000000). Only used for |mobile==true|."},{name:"positionY",type:"integer",optional:!0,experimental:!0,description:"Overriding view Y position on screen in pixels (minimum 0, maximum 10000000). Only used for |mobile==true|."},{name:"screenOrientation",$ref:"ScreenOrientation",optional:!0,description:"Screen orientation override."}]},{name:"clearDeviceMetricsOverride",description:"Clears the overriden device metrics."},{name:"forceViewport",description:"Overrides the visible area of the page. The change is hidden from the page, i.e. the observable scroll position and page scale does not change. In effect, the command moves the specified area of the page into the top-left corner of the frame.",experimental:!0,parameters:[{name:"x",type:"number",description:"X coordinate of top-left corner of the area (CSS pixels)."},{name:"y",type:"number",description:"Y coordinate of top-left corner of the area (CSS pixels)."},{name:"scale",type:"number",description:"Scale to apply to the area (relative to a page scale of 1.0)."}]},{name:"resetViewport",description:"Resets the visible area of the page to the original viewport, undoing any effects of the <code>forceViewport</code> command.",experimental:!0},{name:"resetPageScaleFactor",experimental:!0,description:"Requests that page scale factor is reset to initial values."},{name:"setPageScaleFactor",description:"Sets a specified page scale factor.",experimental:!0,parameters:[{name:"pageScaleFactor",type:"number",description:"Page scale factor."}]},{name:"setVisibleSize",description:"Resizes the frame/viewport of the page. Note that this does not affect the frame's container (e.g. browser window). Can be used to produce screenshots of the specified size. Not supported on Android.",experimental:!0,parameters:[{name:"width",type:"integer",description:"Frame width (DIP)."},{name:"height",type:"integer",description:"Frame height (DIP)."}]},{name:"setScriptExecutionDisabled",description:"Switches script execution in the page.",experimental:!0,parameters:[{name:"value",type:"boolean",description:"Whether script execution should be disabled in the page."}]},{name:"setGeolocationOverride",description:"Overrides the Geolocation Position or Error. Omitting any of the parameters emulates position unavailable.",experimental:!0,parameters:[{name:"latitude",type:"number",optional:!0,description:"Mock latitude"},{name:"longitude",type:"number",optional:!0,description:"Mock longitude"},{name:"accuracy",type:"number",optional:!0,description:"Mock accuracy"}]},{name:"clearGeolocationOverride",description:"Clears the overriden Geolocation Position and Error.",experimental:!0},{name:"setTouchEmulationEnabled",parameters:[{name:"enabled",type:"boolean",description:"Whether the touch event emulation should be enabled."},{name:"configuration",type:"string",enum:["mobile","desktop"],optional:!0,description:"Touch/gesture events configuration. Default: current platform."}],description:"Toggles mouse event-based touch event emulation."},{name:"setEmulatedMedia",parameters:[{name:"media",type:"string",description:"Media type to emulate. Empty string disables the override."}],description:"Emulates the given media for CSS media queries."},{name:"setCPUThrottlingRate",parameters:[{name:"rate",type:"number",description:"Throttling rate as a slowdown factor (1 is no throttle, 2 is 2x slowdown, etc)."}],experimental:!0,description:"Enables CPU throttling to emulate slow CPUs."},{name:"canEmulate",description:"Tells whether emulation is supported.",returns:[{name:"result",type:"boolean",description:"True if emulation is supported."}],experimental:!0},{name:"setVirtualTimePolicy",description:"Turns on virtual time for all frames (replacing real-time with a synthetic time source) and sets the current virtual time policy.  Note this supersedes any previous time budget.",parameters:[{name:"policy",$ref:"VirtualTimePolicy"},{name:"budget",type:"integer",optional:!0,description:"If set, after this many virtual milliseconds have elapsed virtual time will be paused and a virtualTimeBudgetExpired event is sent."}],experimental:!0},{name:"setDefaultBackgroundColorOverride",description:"Sets or clears an override of the default background color of the frame. This override is used if the content does not specify one.",parameters:[{name:"color",$ref:"DOM.RGBA",optional:!0,description:"RGBA of the default background color. If not specified, any existing override will be cleared."}],experimental:!0}],events:[{name:"virtualTimeBudgetExpired",experimental:!0,description:"Notification sent after the virual time budget for the current VirtualTimePolicy has run out."}]},{domain:"Security",description:"Security",experimental:!0,types:[{id:"CertificateId",type:"integer",description:"An internal certificate ID value."},{id:"SecurityState",type:"string",enum:["unknown","neutral","insecure","warning","secure","info"],description:"The security level of a page or resource."},{id:"SecurityStateExplanation",type:"object",properties:[{name:"securityState",$ref:"SecurityState",description:"Security state representing the severity of the factor being explained."},{name:"summary",type:"string",description:"Short phrase describing the type of factor."},{name:"description",type:"string",description:"Full text explanation of the factor."},{name:"hasCertificate",type:"boolean",description:"True if the page has a certificate."}],description:"An explanation of an factor contributing to the security state."},{id:"InsecureContentStatus",type:"object",properties:[{name:"ranMixedContent",type:"boolean",description:"True if the page was loaded over HTTPS and ran mixed (HTTP) content such as scripts."},{name:"displayedMixedContent",type:"boolean",description:"True if the page was loaded over HTTPS and displayed mixed (HTTP) content such as images."},{name:"containedMixedForm",type:"boolean",description:"True if the page was loaded over HTTPS and contained a form targeting an insecure url."},{name:"ranContentWithCertErrors",type:"boolean",description:"True if the page was loaded over HTTPS without certificate errors, and ran content such as scripts that were loaded with certificate errors."},{name:"displayedContentWithCertErrors",type:"boolean",description:"True if the page was loaded over HTTPS without certificate errors, and displayed content such as images that were loaded with certificate errors."},{name:"ranInsecureContentStyle",$ref:"SecurityState",description:"Security state representing a page that ran insecure content."},{name:"displayedInsecureContentStyle",$ref:"SecurityState",description:"Security state representing a page that displayed insecure content."}],description:"Information about insecure content on the page."},{id:"CertificateErrorAction",type:"string",enum:["continue","cancel"],description:"The action to take when a certificate error occurs. continue will continue processing the request and cancel will cancel the request."}],commands:[{name:"enable",description:"Enables tracking security state changes."},{name:"disable",description:"Disables tracking security state changes."},{name:"showCertificateViewer",description:"Displays native dialog with the certificate details."},{name:"handleCertificateError",description:"Handles a certificate error that fired a certificateError event.",parameters:[{name:"eventId",type:"integer",description:"The ID of the event."},{name:"action",$ref:"CertificateErrorAction",description:"The action to take on the certificate error."}]},{name:"setOverrideCertificateErrors",description:"Enable/disable overriding certificate errors. If enabled, all certificate error events need to be handled by the DevTools client and should be answered with handleCertificateError commands.",parameters:[{name:"override",type:"boolean",description:"If true, certificate errors will be overridden."}]}],events:[{name:"securityStateChanged",description:"The security state of the page changed.",parameters:[{name:"securityState",$ref:"SecurityState",description:"Security state."},{name:"schemeIsCryptographic",type:"boolean",description:"True if the page was loaded over cryptographic transport such as HTTPS."},{name:"explanations",type:"array",items:{$ref:"SecurityStateExplanation"},description:"List of explanations for the security state. If the overall security state is `insecure` or `warning`, at least one corresponding explanation should be included."},{name:"insecureContentStatus",$ref:"InsecureContentStatus",description:"Information about insecure content on the page."},{name:"summary",type:"string",description:"Overrides user-visible description of the state.",optional:!0}]},{name:"certificateError",description:"There is a certificate error. If overriding certificate errors is enabled, then it should be handled with the handleCertificateError command. Note: this event does not fire if the certificate error has been allowed internally.",parameters:[{name:"eventId",type:"integer",description:"The ID of the event."},{name:"errorType",type:"string",description:"The type of the error."},{name:"requestURL",type:"string",description:"The url that was requested."}]}]},{domain:"Network",description:"Network domain allows tracking network activities of the page. It exposes information about http, file, data and other requests and responses, their headers, bodies, timing, etc.",dependencies:["Runtime","Security"],types:[{id:"LoaderId",type:"string",description:"Unique loader identifier."},{id:"RequestId",type:"string",description:"Unique request identifier."},{id:"InterceptionId",type:"string",description:"Unique intercepted request identifier."},{id:"ErrorReason",type:"string",enum:["Failed","Aborted","TimedOut","AccessDenied","ConnectionClosed","ConnectionReset","ConnectionRefused","ConnectionAborted","ConnectionFailed","NameNotResolved","InternetDisconnected","AddressUnreachable"],description:"Network level fetch failure reason."},{id:"Timestamp",type:"number",description:"Number of seconds since epoch."},{id:"Headers",type:"object",description:"Request / response headers as keys / values of JSON object."},{id:"ConnectionType",type:"string",enum:["none","cellular2g","cellular3g","cellular4g","bluetooth","ethernet","wifi","wimax","other"],description:"Loading priority of a resource request."},{id:"CookieSameSite",type:"string",enum:["Strict","Lax"],description:"Represents the cookie's 'SameSite' status: https://tools.ietf.org/html/draft-west-first-party-cookies"},{id:"ResourceTiming",type:"object",description:"Timing information for the request.",properties:[{name:"requestTime",type:"number",description:"Timing's requestTime is a baseline in seconds, while the other numbers are ticks in milliseconds relatively to this requestTime."},{name:"proxyStart",type:"number",description:"Started resolving proxy."},{name:"proxyEnd",type:"number",description:"Finished resolving proxy."},{name:"dnsStart",type:"number",description:"Started DNS address resolve."},{name:"dnsEnd",type:"number",description:"Finished DNS address resolve."},{name:"connectStart",type:"number",description:"Started connecting to the remote host."},{name:"connectEnd",type:"number",description:"Connected to the remote host."},{name:"sslStart",type:"number",description:"Started SSL handshake."},{name:"sslEnd",type:"number",description:"Finished SSL handshake."},{name:"workerStart",type:"number",description:"Started running ServiceWorker.",experimental:!0},{name:"workerReady",type:"number",description:"Finished Starting ServiceWorker.",experimental:!0},{name:"sendStart",type:"number",description:"Started sending request."},{name:"sendEnd",type:"number",description:"Finished sending request."
+},{name:"pushStart",type:"number",description:"Time the server started pushing request.",experimental:!0},{name:"pushEnd",type:"number",description:"Time the server finished pushing request.",experimental:!0},{name:"receiveHeadersEnd",type:"number",description:"Finished receiving response headers."}]},{id:"ResourcePriority",type:"string",enum:["VeryLow","Low","Medium","High","VeryHigh"],description:"Loading priority of a resource request."},{id:"Request",type:"object",description:"HTTP request data.",properties:[{name:"url",type:"string",description:"Request URL."},{name:"method",type:"string",description:"HTTP request method."},{name:"headers",$ref:"Headers",description:"HTTP request headers."},{name:"postData",type:"string",optional:!0,description:"HTTP POST request data."},{name:"mixedContentType",optional:!0,type:"string",enum:["blockable","optionally-blockable","none"],description:"The mixed content status of the request, as defined in http://www.w3.org/TR/mixed-content/"},{name:"initialPriority",$ref:"ResourcePriority",description:"Priority of the resource request at the time request is sent."},{name:"referrerPolicy",type:"string",enum:["unsafe-url","no-referrer-when-downgrade","no-referrer","origin","origin-when-cross-origin","no-referrer-when-downgrade-origin-when-cross-origin"],description:"The referrer policy of the request, as defined in https://www.w3.org/TR/referrer-policy/"},{name:"isLinkPreload",type:"boolean",optional:!0,description:"Whether is loaded via link preload."}]},{id:"SignedCertificateTimestamp",type:"object",description:"Details of a signed certificate timestamp (SCT).",properties:[{name:"status",type:"string",description:"Validation status."},{name:"origin",type:"string",description:"Origin."},{name:"logDescription",type:"string",description:"Log name / description."},{name:"logId",type:"string",description:"Log ID."},{name:"timestamp",$ref:"Timestamp",description:"Issuance date."},{name:"hashAlgorithm",type:"string",description:"Hash algorithm."},{name:"signatureAlgorithm",type:"string",description:"Signature algorithm."},{name:"signatureData",type:"string",description:"Signature data."}]},{id:"SecurityDetails",type:"object",description:"Security details about a request.",properties:[{name:"protocol",type:"string",description:'Protocol name (e.g. "TLS 1.2" or "QUIC").'},{name:"keyExchange",type:"string",description:"Key Exchange used by the connection, or the empty string if not applicable."},{name:"keyExchangeGroup",type:"string",optional:!0,description:"(EC)DH group used by the connection, if applicable."},{name:"cipher",type:"string",description:"Cipher name."},{name:"mac",type:"string",optional:!0,description:"TLS MAC. Note that AEAD ciphers do not have separate MACs."},{name:"certificateId",$ref:"Security.CertificateId",description:"Certificate ID value."},{name:"subjectName",type:"string",description:"Certificate subject name."},{name:"sanList",type:"array",items:{type:"string"},description:"Subject Alternative Name (SAN) DNS names and IP addresses."},{name:"issuer",type:"string",description:"Name of the issuing CA."},{name:"validFrom",$ref:"Timestamp",description:"Certificate valid from date."},{name:"validTo",$ref:"Timestamp",description:"Certificate valid to (expiration) date"},{name:"signedCertificateTimestampList",type:"array",items:{$ref:"SignedCertificateTimestamp"},description:"List of signed certificate timestamps (SCTs)."}]},{id:"BlockedReason",type:"string",description:"The reason why request was blocked.",enum:["csp","mixed-content","origin","inspector","subresource-filter","other"],experimental:!0},{id:"Response",type:"object",description:"HTTP response data.",properties:[{name:"url",type:"string",description:"Response URL. This URL can be different from CachedResource.url in case of redirect."},{name:"status",type:"number",description:"HTTP response status code."},{name:"statusText",type:"string",description:"HTTP response status text."},{name:"headers",$ref:"Headers",description:"HTTP response headers."},{name:"headersText",type:"string",optional:!0,description:"HTTP response headers text."},{name:"mimeType",type:"string",description:"Resource mimeType as determined by the browser."},{name:"requestHeaders",$ref:"Headers",optional:!0,description:"Refined HTTP request headers that were actually transmitted over the network."},{name:"requestHeadersText",type:"string",optional:!0,description:"HTTP request headers text."},{name:"connectionReused",type:"boolean",description:"Specifies whether physical connection was actually reused for this request."},{name:"connectionId",type:"number",description:"Physical connection id that was actually used for this request."},{name:"remoteIPAddress",type:"string",optional:!0,experimental:!0,description:"Remote IP address."},{name:"remotePort",type:"integer",optional:!0,experimental:!0,description:"Remote port."},{name:"fromDiskCache",type:"boolean",optional:!0,description:"Specifies that the request was served from the disk cache."},{name:"fromServiceWorker",type:"boolean",optional:!0,description:"Specifies that the request was served from the ServiceWorker."},{name:"encodedDataLength",type:"number",optional:!1,description:"Total number of bytes received for this request so far."},{name:"timing",$ref:"ResourceTiming",optional:!0,description:"Timing information for the given request."},{name:"protocol",type:"string",optional:!0,description:"Protocol used to fetch this request."},{name:"securityState",$ref:"Security.SecurityState",description:"Security state of the request resource."},{name:"securityDetails",$ref:"SecurityDetails",optional:!0,description:"Security details for the request."}]},{id:"WebSocketRequest",type:"object",description:"WebSocket request data.",experimental:!0,properties:[{name:"headers",$ref:"Headers",description:"HTTP request headers."}]},{id:"WebSocketResponse",type:"object",description:"WebSocket response data.",experimental:!0,properties:[{name:"status",type:"number",description:"HTTP response status code."},{name:"statusText",type:"string",description:"HTTP response status text."},{name:"headers",$ref:"Headers",description:"HTTP response headers."},{name:"headersText",type:"string",optional:!0,description:"HTTP response headers text."},{name:"requestHeaders",$ref:"Headers",optional:!0,description:"HTTP request headers."},{name:"requestHeadersText",type:"string",optional:!0,description:"HTTP request headers text."}]},{id:"WebSocketFrame",type:"object",description:"WebSocket frame data.",experimental:!0,properties:[{name:"opcode",type:"number",description:"WebSocket frame opcode."},{name:"mask",type:"boolean",description:"WebSocke frame mask."},{name:"payloadData",type:"string",description:"WebSocke frame payload data."}]},{id:"CachedResource",type:"object",description:"Information about the cached resource.",properties:[{name:"url",type:"string",description:"Resource URL. This is the url of the original network request."},{name:"type",$ref:"Page.ResourceType",description:"Type of this resource."},{name:"response",$ref:"Response",optional:!0,description:"Cached response data."},{name:"bodySize",type:"number",description:"Cached response body size."}]},{id:"Initiator",type:"object",description:"Information about the request initiator.",properties:[{name:"type",type:"string",enum:["parser","script","preload","other"],description:"Type of this initiator."},{name:"stack",$ref:"Runtime.StackTrace",optional:!0,description:"Initiator JavaScript stack trace, set for Script only."},{name:"url",type:"string",optional:!0,description:"Initiator URL, set for Parser type only."},{name:"lineNumber",type:"number",optional:!0,description:"Initiator line number, set for Parser type only (0-based)."}]},{id:"Cookie",type:"object",description:"Cookie object",properties:[{name:"name",type:"string",description:"Cookie name."},{name:"value",type:"string",description:"Cookie value."},{name:"domain",type:"string",description:"Cookie domain."},{name:"path",type:"string",description:"Cookie path."},{name:"expires",type:"number",description:"Cookie expiration date as the number of seconds since the UNIX epoch."},{name:"size",type:"integer",description:"Cookie size."},{name:"httpOnly",type:"boolean",description:"True if cookie is http-only."},{name:"secure",type:"boolean",description:"True if cookie is secure."},{name:"session",type:"boolean",description:"True in case of session cookie."},{name:"sameSite",$ref:"CookieSameSite",optional:!0,description:"Cookie SameSite type."}],experimental:!0}],commands:[{name:"enable",description:"Enables network tracking, network events will now be delivered to the client.",parameters:[{name:"maxTotalBufferSize",type:"integer",optional:!0,experimental:!0,description:"Buffer size in bytes to use when preserving network payloads (XHRs, etc)."},{name:"maxResourceBufferSize",type:"integer",optional:!0,experimental:!0,description:"Per-resource buffer size in bytes to use when preserving network payloads (XHRs, etc)."}]},{name:"disable",description:"Disables network tracking, prevents network events from being sent to the client."},{name:"setUserAgentOverride",description:"Allows overriding user agent with the given string.",parameters:[{name:"userAgent",type:"string",description:"User agent to use."}]},{name:"setExtraHTTPHeaders",description:"Specifies whether to always send extra HTTP headers with the requests from this page.",parameters:[{name:"headers",$ref:"Headers",description:"Map with extra HTTP headers."}]},{name:"getResponseBody",description:"Returns content served for the given request.",parameters:[{name:"requestId",$ref:"RequestId",description:"Identifier of the network request to get content for."}],returns:[{name:"body",type:"string",description:"Response body."},{name:"base64Encoded",type:"boolean",description:"True, if content was sent as base64."}]},{name:"setBlockedURLs",description:"Blocks URLs from loading.",parameters:[{name:"urls",type:"array",items:{type:"string"},description:"URL patterns to block. Wildcards ('*') are allowed."}],experimental:!0},{name:"replayXHR",description:"This method sends a new XMLHttpRequest which is identical to the original one. The following parameters should be identical: method, url, async, request body, extra headers, withCredentials attribute, user, password.",parameters:[{name:"requestId",$ref:"RequestId",description:"Identifier of XHR to replay."}],experimental:!0},{name:"canClearBrowserCache",description:"Tells whether clearing browser cache is supported.",returns:[{name:"result",type:"boolean",description:"True if browser cache can be cleared."}]},{name:"clearBrowserCache",description:"Clears browser cache."},{name:"canClearBrowserCookies",description:"Tells whether clearing browser cookies is supported.",returns:[{name:"result",type:"boolean",description:"True if browser cookies can be cleared."}]},{name:"clearBrowserCookies",description:"Clears browser cookies."},{name:"getCookies",parameters:[{name:"urls",type:"array",items:{type:"string"},optional:!0,description:"The list of URLs for which applicable cookies will be fetched"}],returns:[{name:"cookies",type:"array",items:{$ref:"Cookie"},description:"Array of cookie objects."}],description:"Returns all browser cookies for the current URL. Depending on the backend support, will return detailed cookie information in the <code>cookies</code> field.",experimental:!0},{name:"getAllCookies",returns:[{name:"cookies",type:"array",items:{$ref:"Cookie"},description:"Array of cookie objects."}],description:"Returns all browser cookies. Depending on the backend support, will return detailed cookie information in the <code>cookies</code> field.",experimental:!0},{name:"deleteCookie",parameters:[{name:"cookieName",type:"string",description:"Name of the cookie to remove."},{name:"url",type:"string",description:"URL to match cooke domain and path."}],description:"Deletes browser cookie with given name, domain and path.",experimental:!0},{name:"setCookie",parameters:[{name:"url",type:"string",description:"The request-URI to associate with the setting of the cookie. This value can affect the default domain and path values of the created cookie."},{name:"name",type:"string",description:"The name of the cookie."},{name:"value",type:"string",description:"The value of the cookie."},{name:"domain",type:"string",optional:!0,description:"If omitted, the cookie becomes a host-only cookie."},{name:"path",type:"string",optional:!0,description:"Defaults to the path portion of the url parameter."},{name:"secure",type:"boolean",optional:!0,description:"Defaults ot false."},{name:"httpOnly",type:"boolean",optional:!0,description:"Defaults to false."},{name:"sameSite",$ref:"CookieSameSite",optional:!0,description:"Defaults to browser default behavior."},{name:"expirationDate",$ref:"Timestamp",optional:!0,description:"If omitted, the cookie becomes a session cookie."}],returns:[{name:"success",type:"boolean",description:"True if successfully set cookie."}],description:"Sets a cookie with the given cookie data; may overwrite equivalent cookies if they exist.",experimental:!0},{name:"canEmulateNetworkConditions",description:"Tells whether emulation of network conditions is supported.",returns:[{name:"result",type:"boolean",description:"True if emulation of network conditions is supported."}],experimental:!0},{name:"emulateNetworkConditions",description:"Activates emulation of network conditions.",parameters:[{name:"offline",type:"boolean",description:"True to emulate internet disconnection."},{name:"latency",type:"number",description:"Additional latency (ms)."},{name:"downloadThroughput",type:"number",description:"Maximal aggregated download throughput."},{name:"uploadThroughput",type:"number",description:"Maximal aggregated upload throughput."},{name:"connectionType",$ref:"ConnectionType",optional:!0,description:"Connection type if known."}]},{name:"setCacheDisabled",parameters:[{name:"cacheDisabled",type:"boolean",description:"Cache disabled state."}],description:"Toggles ignoring cache for each request. If <code>true</code>, cache will not be used."},{name:"setBypassServiceWorker",parameters:[{name:"bypass",type:"boolean",description:"Bypass service worker and load from network."}],experimental:!0,description:"Toggles ignoring of service worker for each request."},{name:"setDataSizeLimitsForTest",parameters:[{name:"maxTotalSize",type:"integer",description:"Maximum total buffer size."},{name:"maxResourceSize",type:"integer",description:"Maximum per-resource size."}],description:"For testing.",experimental:!0},{name:"getCertificate",description:"Returns the DER-encoded certificate.",parameters:[{name:"origin",type:"string",description:"Origin to get certificate for."}],returns:[{name:"tableNames",type:"array",items:{type:"string"}}],experimental:!0},{name:"enableRequestInterception",parameters:[{name:"enabled",type:"boolean",description:"Whether or not HTTP requests should be intercepted and Network.requestIntercepted events sent."}],experimental:!0},{name:"continueInterceptedRequest",description:"Response to Network.requestIntercepted which either modifies the request to continue with any modifications, or blocks it, or completes it with the provided response bytes. If a network fetch occurs as a result which encounters a redirect an additional Network.requestIntercepted event will be sent with the same InterceptionId.",parameters:[{name:"interceptionId",$ref:"InterceptionId"},{name:"errorReason",$ref:"ErrorReason",optional:!0,description:"If set this causes the request to fail with the given reason."},{name:"rawResponse",type:"string",optional:!0,description:"If set the requests completes using with the provided base64 encoded raw response, including HTTP status line and headers etc..."},{name:"url",type:"string",optional:!0,description:"If set the request url will be modified in a way that's not observable by page."},{name:"method",type:"string",optional:!0,description:"If set this allows the request method to be overridden."},{name:"postData",type:"string",optional:!0,description:"If set this allows postData to be set."},{name:"headers",$ref:"Headers",optional:!0,description:"If set this allows the request headers to be changed."}],experimental:!0}],events:[{name:"resourceChangedPriority",description:"Fired when resource loading priority is changed",parameters:[{name:"requestId",$ref:"RequestId",description:"Request identifier."},{name:"newPriority",$ref:"ResourcePriority",description:"New priority"},{name:"timestamp",$ref:"Timestamp",description:"Timestamp."}],experimental:!0},{name:"requestWillBeSent",description:"Fired when page is about to send HTTP request.",parameters:[{name:"requestId",$ref:"RequestId",description:"Request identifier."},{name:"frameId",$ref:"Page.FrameId",description:"Frame identifier.",experimental:!0},{name:"loaderId",$ref:"LoaderId",description:"Loader identifier."},{name:"documentURL",type:"string",description:"URL of the document this request is loaded for."},{name:"request",$ref:"Request",description:"Request data."},{name:"timestamp",$ref:"Timestamp",description:"Timestamp."},{name:"wallTime",$ref:"Timestamp",experimental:!0,description:"UTC Timestamp."},{name:"initiator",$ref:"Initiator",description:"Request initiator."},{name:"redirectResponse",optional:!0,$ref:"Response",description:"Redirect response data."},{name:"type",$ref:"Page.ResourceType",optional:!0,experimental:!0,description:"Type of this resource."}]},{name:"requestServedFromCache",description:"Fired if request ended up loading from cache.",parameters:[{name:"requestId",$ref:"RequestId",description:"Request identifier."}]},{name:"responseReceived",description:"Fired when HTTP response is available.",parameters:[{name:"requestId",$ref:"RequestId",description:"Request identifier."},{name:"frameId",$ref:"Page.FrameId",description:"Frame identifier.",experimental:!0},{name:"loaderId",$ref:"LoaderId",description:"Loader identifier."},{name:"timestamp",$ref:"Timestamp",description:"Timestamp."},{name:"type",$ref:"Page.ResourceType",description:"Resource type."},{name:"response",$ref:"Response",description:"Response data."}]},{name:"dataReceived",description:"Fired when data chunk was received over the network.",parameters:[{name:"requestId",$ref:"RequestId",description:"Request identifier."},{name:"timestamp",$ref:"Timestamp",description:"Timestamp."},{name:"dataLength",type:"integer",description:"Data chunk length."},{name:"encodedDataLength",type:"integer",description:"Actual bytes received (might be less than dataLength for compressed encodings)."}]},{name:"loadingFinished",description:"Fired when HTTP request has finished loading.",parameters:[{name:"requestId",$ref:"RequestId",description:"Request identifier."},{name:"timestamp",$ref:"Timestamp",description:"Timestamp."},{name:"encodedDataLength",type:"number",description:"Total number of bytes received for this request."}]},{name:"loadingFailed",description:"Fired when HTTP request has failed to load.",parameters:[{name:"requestId",$ref:"RequestId",description:"Request identifier."},{name:"timestamp",$ref:"Timestamp",description:"Timestamp."},{name:"type",$ref:"Page.ResourceType",description:"Resource type."},{name:"errorText",type:"string",description:"User friendly error message."},{name:"canceled",type:"boolean",optional:!0,description:"True if loading was canceled."},{name:"blockedReason",$ref:"BlockedReason",optional:!0,description:"The reason why loading was blocked, if any.",experimental:!0}]},{name:"webSocketWillSendHandshakeRequest",description:"Fired when WebSocket is about to initiate handshake.",parameters:[{name:"requestId",$ref:"RequestId",description:"Request identifier."},{name:"timestamp",$ref:"Timestamp",description:"Timestamp."},{name:"wallTime",$ref:"Timestamp",experimental:!0,description:"UTC Timestamp."},{name:"request",$ref:"WebSocketRequest",description:"WebSocket request data."}],experimental:!0},{name:"webSocketHandshakeResponseReceived",description:"Fired when WebSocket handshake response becomes available.",parameters:[{name:"requestId",$ref:"RequestId",description:"Request identifier."},{name:"timestamp",$ref:"Timestamp",description:"Timestamp."},{name:"response",$ref:"WebSocketResponse",description:"WebSocket response data."}],experimental:!0},{name:"webSocketCreated",description:"Fired upon WebSocket creation.",parameters:[{name:"requestId",$ref:"RequestId",description:"Request identifier."},{name:"url",type:"string",description:"WebSocket request URL."},{name:"initiator",$ref:"Initiator",optional:!0,description:"Request initiator."}],experimental:!0},{name:"webSocketClosed",description:"Fired when WebSocket is closed.",parameters:[{name:"requestId",$ref:"RequestId",description:"Request identifier."},{name:"timestamp",$ref:"Timestamp",description:"Timestamp."}],experimental:!0},{name:"webSocketFrameReceived",description:"Fired when WebSocket frame is received.",parameters:[{name:"requestId",$ref:"RequestId",description:"Request identifier."},{name:"timestamp",$ref:"Timestamp",description:"Timestamp."},{name:"response",$ref:"WebSocketFrame",description:"WebSocket response data."}],experimental:!0},{name:"webSocketFrameError",description:"Fired when WebSocket frame error occurs.",parameters:[{name:"requestId",$ref:"RequestId",description:"Request identifier."},{name:"timestamp",$ref:"Timestamp",description:"Timestamp."},{name:"errorMessage",type:"string",description:"WebSocket frame error message."}],experimental:!0},{name:"webSocketFrameSent",description:"Fired when WebSocket frame is sent.",parameters:[{name:"requestId",$ref:"RequestId",description:"Request identifier."},{name:"timestamp",$ref:"Timestamp",description:"Timestamp."},{name:"response",$ref:"WebSocketFrame",description:"WebSocket response data."}],experimental:!0},{name:"eventSourceMessageReceived",description:"Fired when EventSource message is received.",parameters:[{name:"requestId",$ref:"RequestId",description:"Request identifier."},{name:"timestamp",$ref:"Timestamp",description:"Timestamp."},{name:"eventName",type:"string",description:"Message type."},{name:"eventId",type:"string",description:"Message identifier."},{name:"data",type:"string",description:"Message content."}],experimental:!0},{name:"requestIntercepted",description:"Details of an intercepted HTTP request, which must be either allowed, blocked, modified or mocked.",parameters:[{name:"InterceptionId",$ref:"InterceptionId",description:"Each request the page makes will have a unique id, however if any redirects are encountered while processing that fetch, they will be reported with the same id as the original fetch."},{name:"request",$ref:"Request"},{name:"redirectHeaders",$ref:"Headers",optional:!0,description:"HTTP response headers, only sent if a redirect was intercepted."},{name:"redirectStatusCode",type:"integer",optional:!0,description:"HTTP response code, only sent if a redirect was intercepted."},{name:"redirectUrl",optional:!0,type:"string",description:"Redirect location, only sent if a redirect was intercepted."}],experimental:!0}]},{domain:"Database",experimental:!0,types:[{id:"DatabaseId",type:"string",description:"Unique identifier of Database object.",experimental:!0},{id:"Database",type:"object",description:"Database object.",experimental:!0,properties:[{name:"id",$ref:"DatabaseId",description:"Database ID."},{name:"domain",type:"string",description:"Database domain."},{name:"name",type:"string",description:"Database name."},{name:"version",type:"string",description:"Database version."}]},{id:"Error",type:"object",description:"Database error.",properties:[{name:"message",type:"string",description:"Error message."},{name:"code",type:"integer",description:"Error code."}]}],commands:[{name:"enable",description:"Enables database tracking, database events will now be delivered to the client."},{name:"disable",description:"Disables database tracking, prevents database events from being sent to the client."},{name:"getDatabaseTableNames",parameters:[{name:"databaseId",$ref:"DatabaseId"}],returns:[{name:"tableNames",type:"array",items:{type:"string"}}]},{name:"executeSQL",parameters:[{name:"databaseId",$ref:"DatabaseId"},{name:"query",type:"string"}],returns:[{name:"columnNames",type:"array",optional:!0,items:{type:"string"}},{name:"values",type:"array",optional:!0,items:{type:"any"}},{name:"sqlError",$ref:"Error",optional:!0}]}],events:[{name:"addDatabase",parameters:[{name:"database",$ref:"Database"}]}]},{domain:"IndexedDB",dependencies:["Runtime"],experimental:!0,types:[{id:"DatabaseWithObjectStores",type:"object",description:"Database with an array of object stores.",properties:[{name:"name",type:"string",description:"Database name."},{name:"version",type:"integer",description:"Database version."},{name:"objectStores",type:"array",items:{$ref:"ObjectStore"},description:"Object stores in this database."}]},{id:"ObjectStore",type:"object",description:"Object store.",properties:[{name:"name",type:"string",description:"Object store name."},{name:"keyPath",$ref:"KeyPath",description:"Object store key path."},{name:"autoIncrement",type:"boolean",description:"If true, object store has auto increment flag set."},{name:"indexes",type:"array",items:{$ref:"ObjectStoreIndex"},description:"Indexes in this object store."}]},{id:"ObjectStoreIndex",type:"object",description:"Object store index.",properties:[{name:"name",type:"string",description:"Index name."},{name:"keyPath",$ref:"KeyPath",description:"Index key path."},{name:"unique",type:"boolean",description:"If true, index is unique."},{name:"multiEntry",type:"boolean",description:"If true, index allows multiple entries for a key."}]},{id:"Key",type:"object",description:"Key.",properties:[{name:"type",type:"string",enum:["number","string","date","array"],description:"Key type."},{name:"number",type:"number",optional:!0,description:"Number value."},{name:"string",type:"string",optional:!0,description:"String value."},{name:"date",type:"number",optional:!0,description:"Date value."},{name:"array",type:"array",optional:!0,items:{$ref:"Key"},description:"Array value."}]},{id:"KeyRange",type:"object",description:"Key range.",properties:[{name:"lower",$ref:"Key",optional:!0,description:"Lower bound."},{name:"upper",$ref:"Key",optional:!0,description:"Upper bound."},{name:"lowerOpen",type:"boolean",description:"If true lower bound is open."},{name:"upperOpen",type:"boolean",description:"If true upper bound is open."}]},{id:"DataEntry",type:"object",description:"Data entry.",properties:[{name:"key",$ref:"Runtime.RemoteObject",description:"Key object."},{name:"primaryKey",$ref:"Runtime.RemoteObject",description:"Primary key object."},{name:"value",$ref:"Runtime.RemoteObject",description:"Value object."}]},{id:"KeyPath",type:"object",description:"Key path.",properties:[{name:"type",type:"string",enum:["null","string","array"],description:"Key path type."},{name:"string",type:"string",optional:!0,description:"String value."},{name:"array",type:"array",optional:!0,items:{type:"string"},description:"Array value."}]}],commands:[{name:"enable",description:"Enables events from backend."},{name:"disable",description:"Disables events from backend."},{name:"requestDatabaseNames",parameters:[{name:"securityOrigin",type:"string",description:"Security origin."}],returns:[{name:"databaseNames",type:"array",items:{type:"string"},description:"Database names for origin."}],description:"Requests database names for given security origin."},{name:"requestDatabase",parameters:[{name:"securityOrigin",type:"string",description:"Security origin."},{name:"databaseName",type:"string",description:"Database name."}],returns:[{name:"databaseWithObjectStores",$ref:"DatabaseWithObjectStores",description:"Database with an array of object stores."}],description:"Requests database with given name in given frame."},{name:"requestData",parameters:[{name:"securityOrigin",type:"string",description:"Security origin."},{name:"databaseName",type:"string",description:"Database name."},{name:"objectStoreName",type:"string",description:"Object store name."},{name:"indexName",type:"string",description:"Index name, empty string for object store data requests."},{name:"skipCount",type:"integer",description:"Number of records to skip."},{name:"pageSize",type:"integer",description:"Number of records to fetch."},{name:"keyRange",$ref:"KeyRange",optional:!0,description:"Key range."}],returns:[{name:"objectStoreDataEntries",type:"array",items:{$ref:"DataEntry"},description:"Array of object store data entries."},{name:"hasMore",type:"boolean",description:"If true, there are more entries to fetch in the given range."}],description:"Requests data from object store or index."},{name:"clearObjectStore",parameters:[{name:"securityOrigin",type:"string",description:"Security origin."},{name:"databaseName",type:"string",description:"Database name."},{name:"objectStoreName",type:"string",description:"Object store name."}],returns:[],description:"Clears all entries from an object store."},{name:"deleteDatabase",parameters:[{name:"securityOrigin",type:"string",description:"Security origin."},{name:"databaseName",type:"string",description:"Database name."}],returns:[],description:"Deletes a database."}]},{domain:"CacheStorage",experimental:!0,types:[{id:"CacheId",type:"string",description:"Unique identifier of the Cache object."},{id:"DataEntry",type:"object",description:"Data entry.",properties:[{name:"request",type:"string",description:"Request url spec."},{name:"response",type:"string",description:"Response stataus text."}]},{id:"Cache",type:"object",description:"Cache identifier.",properties:[{name:"cacheId",$ref:"CacheId",description:"An opaque unique id of the cache."},{name:"securityOrigin",type:"string",description:"Security origin of the cache."},{name:"cacheName",type:"string",description:"The name of the cache."}]}],commands:[{name:"requestCacheNames",parameters:[{name:"securityOrigin",type:"string",description:"Security origin."}],returns:[{name:"caches",type:"array",items:{$ref:"Cache"},description:"Caches for the security origin."}],description:"Requests cache names."},{name:"requestEntries",parameters:[{name:"cacheId",$ref:"CacheId",description:"ID of cache to get entries from."},{name:"skipCount",type:"integer",description:"Number of records to skip."},{name:"pageSize",type:"integer",description:"Number of records to fetch."}],returns:[{name:"cacheDataEntries",type:"array",items:{$ref:"DataEntry"},description:"Array of object store data entries."},{name:"hasMore",type:"boolean",description:"If true, there are more entries to fetch in the given range."}],description:"Requests data from cache."},{name:"deleteCache",parameters:[{name:"cacheId",$ref:"CacheId",description:"Id of cache for deletion."}],description:"Deletes a cache."},{name:"deleteEntry",parameters:[{name:"cacheId",$ref:"CacheId",description:"Id of cache where the entry will be deleted."},{name:"request",type:"string",description:"URL spec of the request."}],description:"Deletes a cache entry."}]},{domain:"DOMStorage",experimental:!0,description:"Query and modify DOM storage.",types:[{id:"StorageId",type:"object",description:"DOM Storage identifier.",experimental:!0,properties:[{name:"securityOrigin",type:"string",description:"Security origin for the storage."},{name:"isLocalStorage",type:"boolean",description:"Whether the storage is local storage (not session storage)."}]},{id:"Item",type:"array",description:"DOM Storage item.",experimental:!0,items:{type:"string"}}],commands:[{name:"enable",description:"Enables storage tracking, storage events will now be delivered to the client."},{name:"disable",description:"Disables storage tracking, prevents storage events from being sent to the client."},{name:"clear",parameters:[{name:"storageId",$ref:"StorageId"}]},{name:"getDOMStorageItems",parameters:[{name:"storageId",$ref:"StorageId"}],returns:[{name:"entries",type:"array",items:{$ref:"Item"}}]},{name:"setDOMStorageItem",parameters:[{name:"storageId",
+$ref:"StorageId"},{name:"key",type:"string"},{name:"value",type:"string"}]},{name:"removeDOMStorageItem",parameters:[{name:"storageId",$ref:"StorageId"},{name:"key",type:"string"}]}],events:[{name:"domStorageItemsCleared",parameters:[{name:"storageId",$ref:"StorageId"}]},{name:"domStorageItemRemoved",parameters:[{name:"storageId",$ref:"StorageId"},{name:"key",type:"string"}]},{name:"domStorageItemAdded",parameters:[{name:"storageId",$ref:"StorageId"},{name:"key",type:"string"},{name:"newValue",type:"string"}]},{name:"domStorageItemUpdated",parameters:[{name:"storageId",$ref:"StorageId"},{name:"key",type:"string"},{name:"oldValue",type:"string"},{name:"newValue",type:"string"}]}]},{domain:"ApplicationCache",experimental:!0,types:[{id:"ApplicationCacheResource",type:"object",description:"Detailed application cache resource information.",properties:[{name:"url",type:"string",description:"Resource url."},{name:"size",type:"integer",description:"Resource size."},{name:"type",type:"string",description:"Resource type."}]},{id:"ApplicationCache",type:"object",description:"Detailed application cache information.",properties:[{name:"manifestURL",type:"string",description:"Manifest URL."},{name:"size",type:"number",description:"Application cache size."},{name:"creationTime",type:"number",description:"Application cache creation time."},{name:"updateTime",type:"number",description:"Application cache update time."},{name:"resources",type:"array",items:{$ref:"ApplicationCacheResource"},description:"Application cache resources."}]},{id:"FrameWithManifest",type:"object",description:"Frame identifier - manifest URL pair.",properties:[{name:"frameId",$ref:"Page.FrameId",description:"Frame identifier."},{name:"manifestURL",type:"string",description:"Manifest URL."},{name:"status",type:"integer",description:"Application cache status."}]}],commands:[{name:"getFramesWithManifests",returns:[{name:"frameIds",type:"array",items:{$ref:"FrameWithManifest"},description:"Array of frame identifiers with manifest urls for each frame containing a document associated with some application cache."}],description:"Returns array of frame identifiers with manifest urls for each frame containing a document associated with some application cache."},{name:"enable",description:"Enables application cache domain notifications."},{name:"getManifestForFrame",parameters:[{name:"frameId",$ref:"Page.FrameId",description:"Identifier of the frame containing document whose manifest is retrieved."}],returns:[{name:"manifestURL",type:"string",description:"Manifest URL for document in the given frame."}],description:"Returns manifest URL for document in the given frame."},{name:"getApplicationCacheForFrame",parameters:[{name:"frameId",$ref:"Page.FrameId",description:"Identifier of the frame containing document whose application cache is retrieved."}],returns:[{name:"applicationCache",$ref:"ApplicationCache",description:"Relevant application cache data for the document in given frame."}],description:"Returns relevant application cache data for the document in given frame."}],events:[{name:"applicationCacheStatusUpdated",parameters:[{name:"frameId",$ref:"Page.FrameId",description:"Identifier of the frame containing document whose application cache updated status."},{name:"manifestURL",type:"string",description:"Manifest URL."},{name:"status",type:"integer",description:"Updated application cache status."}]},{name:"networkStateUpdated",parameters:[{name:"isNowOnline",type:"boolean"}]}]},{domain:"DOM",description:"This domain exposes DOM read/write operations. Each DOM Node is represented with its mirror object that has an <code>id</code>. This <code>id</code> can be used to get additional information on the Node, resolve it into the JavaScript object wrapper, etc. It is important that client receives DOM events only for the nodes that are known to the client. Backend keeps track of the nodes that were sent to the client and never sends the same node twice. It is client's responsibility to collect information about the nodes that were sent to the client.<p>Note that <code>iframe</code> owner elements will return corresponding document elements as their child nodes.</p>",dependencies:["Runtime"],types:[{id:"NodeId",type:"integer",description:"Unique DOM node identifier."},{id:"BackendNodeId",type:"integer",description:"Unique DOM node identifier used to reference a node that may not have been pushed to the front-end.",experimental:!0},{id:"BackendNode",type:"object",properties:[{name:"nodeType",type:"integer",description:"<code>Node</code>'s nodeType."},{name:"nodeName",type:"string",description:"<code>Node</code>'s nodeName."},{name:"backendNodeId",$ref:"BackendNodeId"}],experimental:!0,description:"Backend node with a friendly name."},{id:"PseudoType",type:"string",enum:["first-line","first-letter","before","after","backdrop","selection","first-line-inherited","scrollbar","scrollbar-thumb","scrollbar-button","scrollbar-track","scrollbar-track-piece","scrollbar-corner","resizer","input-list-button"],description:"Pseudo element type."},{id:"ShadowRootType",type:"string",enum:["user-agent","open","closed"],description:"Shadow root type."},{id:"Node",type:"object",properties:[{name:"nodeId",$ref:"NodeId",description:"Node identifier that is passed into the rest of the DOM messages as the <code>nodeId</code>. Backend will only push node with given <code>id</code> once. It is aware of all requested nodes and will only fire DOM events for nodes known to the client."},{name:"parentId",$ref:"NodeId",optional:!0,description:"The id of the parent node if any.",experimental:!0},{name:"backendNodeId",$ref:"BackendNodeId",description:"The BackendNodeId for this node.",experimental:!0},{name:"nodeType",type:"integer",description:"<code>Node</code>'s nodeType."},{name:"nodeName",type:"string",description:"<code>Node</code>'s nodeName."},{name:"localName",type:"string",description:"<code>Node</code>'s localName."},{name:"nodeValue",type:"string",description:"<code>Node</code>'s nodeValue."},{name:"childNodeCount",type:"integer",optional:!0,description:"Child count for <code>Container</code> nodes."},{name:"children",type:"array",optional:!0,items:{$ref:"Node"},description:"Child nodes of this node when requested with children."},{name:"attributes",type:"array",optional:!0,items:{type:"string"},description:"Attributes of the <code>Element</code> node in the form of flat array <code>[name1, value1, name2, value2]</code>."},{name:"documentURL",type:"string",optional:!0,description:"Document URL that <code>Document</code> or <code>FrameOwner</code> node points to."},{name:"baseURL",type:"string",optional:!0,description:"Base URL that <code>Document</code> or <code>FrameOwner</code> node uses for URL completion.",experimental:!0},{name:"publicId",type:"string",optional:!0,description:"<code>DocumentType</code>'s publicId."},{name:"systemId",type:"string",optional:!0,description:"<code>DocumentType</code>'s systemId."},{name:"internalSubset",type:"string",optional:!0,description:"<code>DocumentType</code>'s internalSubset."},{name:"xmlVersion",type:"string",optional:!0,description:"<code>Document</code>'s XML version in case of XML documents."},{name:"name",type:"string",optional:!0,description:"<code>Attr</code>'s name."},{name:"value",type:"string",optional:!0,description:"<code>Attr</code>'s value."},{name:"pseudoType",$ref:"PseudoType",optional:!0,description:"Pseudo element type for this node."},{name:"shadowRootType",$ref:"ShadowRootType",optional:!0,description:"Shadow root type."},{name:"frameId",$ref:"Page.FrameId",optional:!0,description:"Frame ID for frame owner elements.",experimental:!0},{name:"contentDocument",$ref:"Node",optional:!0,description:"Content document for frame owner elements."},{name:"shadowRoots",type:"array",optional:!0,items:{$ref:"Node"},description:"Shadow root list for given element host.",experimental:!0},{name:"templateContent",$ref:"Node",optional:!0,description:"Content document fragment for template elements.",experimental:!0},{name:"pseudoElements",type:"array",items:{$ref:"Node"},optional:!0,description:"Pseudo elements associated with this node.",experimental:!0},{name:"importedDocument",$ref:"Node",optional:!0,description:"Import document for the HTMLImport links."},{name:"distributedNodes",type:"array",items:{$ref:"BackendNode"},optional:!0,description:"Distributed nodes for given insertion point.",experimental:!0},{name:"isSVG",type:"boolean",optional:!0,description:"Whether the node is SVG.",experimental:!0}],description:"DOM interaction is implemented in terms of mirror objects that represent the actual DOM nodes. DOMNode is a base node mirror type."},{id:"RGBA",type:"object",properties:[{name:"r",type:"integer",description:"The red component, in the [0-255] range."},{name:"g",type:"integer",description:"The green component, in the [0-255] range."},{name:"b",type:"integer",description:"The blue component, in the [0-255] range."},{name:"a",type:"number",optional:!0,description:"The alpha component, in the [0-1] range (default: 1)."}],description:"A structure holding an RGBA color."},{id:"Quad",type:"array",items:{type:"number"},minItems:8,maxItems:8,description:"An array of quad vertices, x immediately followed by y for each point, points clock-wise.",experimental:!0},{id:"BoxModel",type:"object",experimental:!0,properties:[{name:"content",$ref:"Quad",description:"Content box"},{name:"padding",$ref:"Quad",description:"Padding box"},{name:"border",$ref:"Quad",description:"Border box"},{name:"margin",$ref:"Quad",description:"Margin box"},{name:"width",type:"integer",description:"Node width"},{name:"height",type:"integer",description:"Node height"},{name:"shapeOutside",$ref:"ShapeOutsideInfo",optional:!0,description:"Shape outside coordinates"}],description:"Box model."},{id:"ShapeOutsideInfo",type:"object",experimental:!0,properties:[{name:"bounds",$ref:"Quad",description:"Shape bounds"},{name:"shape",type:"array",items:{type:"any"},description:"Shape coordinate details"},{name:"marginShape",type:"array",items:{type:"any"},description:"Margin shape bounds"}],description:"CSS Shape Outside details."},{id:"Rect",type:"object",experimental:!0,properties:[{name:"x",type:"number",description:"X coordinate"},{name:"y",type:"number",description:"Y coordinate"},{name:"width",type:"number",description:"Rectangle width"},{name:"height",type:"number",description:"Rectangle height"}],description:"Rectangle."}],commands:[{name:"enable",description:"Enables DOM agent for the given page."},{name:"disable",description:"Disables DOM agent for the given page."},{name:"getDocument",parameters:[{name:"depth",type:"integer",optional:!0,description:"The maximum depth at which children should be retrieved, defaults to 1. Use -1 for the entire subtree or provide an integer larger than 0.",experimental:!0},{name:"pierce",type:"boolean",optional:!0,description:"Whether or not iframes and shadow roots should be traversed when returning the subtree (default is false).",experimental:!0}],returns:[{name:"root",$ref:"Node",description:"Resulting node."}],description:"Returns the root DOM node (and optionally the subtree) to the caller."},{name:"getFlattenedDocument",parameters:[{name:"depth",type:"integer",optional:!0,description:"The maximum depth at which children should be retrieved, defaults to 1. Use -1 for the entire subtree or provide an integer larger than 0.",experimental:!0},{name:"pierce",type:"boolean",optional:!0,description:"Whether or not iframes and shadow roots should be traversed when returning the subtree (default is false).",experimental:!0}],returns:[{name:"nodes",type:"array",items:{$ref:"Node"},description:"Resulting node."}],description:"Returns the root DOM node (and optionally the subtree) to the caller."},{name:"collectClassNamesFromSubtree",parameters:[{name:"nodeId",$ref:"NodeId",description:"Id of the node to collect class names."}],returns:[{name:"classNames",type:"array",items:{type:"string"},description:"Class name list."}],description:"Collects class names for the node with given id and all of it's child nodes.",experimental:!0},{name:"requestChildNodes",parameters:[{name:"nodeId",$ref:"NodeId",description:"Id of the node to get children for."},{name:"depth",type:"integer",optional:!0,description:"The maximum depth at which children should be retrieved, defaults to 1. Use -1 for the entire subtree or provide an integer larger than 0.",experimental:!0},{name:"pierce",type:"boolean",optional:!0,description:"Whether or not iframes and shadow roots should be traversed when returning the sub-tree (default is false).",experimental:!0}],description:"Requests that children of the node with given id are returned to the caller in form of <code>setChildNodes</code> events where not only immediate children are retrieved, but all children down to the specified depth."},{name:"querySelector",parameters:[{name:"nodeId",$ref:"NodeId",description:"Id of the node to query upon."},{name:"selector",type:"string",description:"Selector string."}],returns:[{name:"nodeId",$ref:"NodeId",description:"Query selector result."}],description:"Executes <code>querySelector</code> on a given node."},{name:"querySelectorAll",parameters:[{name:"nodeId",$ref:"NodeId",description:"Id of the node to query upon."},{name:"selector",type:"string",description:"Selector string."}],returns:[{name:"nodeIds",type:"array",items:{$ref:"NodeId"},description:"Query selector result."}],description:"Executes <code>querySelectorAll</code> on a given node."},{name:"setNodeName",parameters:[{name:"nodeId",$ref:"NodeId",description:"Id of the node to set name for."},{name:"name",type:"string",description:"New node's name."}],returns:[{name:"nodeId",$ref:"NodeId",description:"New node's id."}],description:"Sets node name for a node with given id."},{name:"setNodeValue",parameters:[{name:"nodeId",$ref:"NodeId",description:"Id of the node to set value for."},{name:"value",type:"string",description:"New node's value."}],description:"Sets node value for a node with given id."},{name:"removeNode",parameters:[{name:"nodeId",$ref:"NodeId",description:"Id of the node to remove."}],description:"Removes node with given id."},{name:"setAttributeValue",parameters:[{name:"nodeId",$ref:"NodeId",description:"Id of the element to set attribute for."},{name:"name",type:"string",description:"Attribute name."},{name:"value",type:"string",description:"Attribute value."}],description:"Sets attribute for an element with given id."},{name:"setAttributesAsText",parameters:[{name:"nodeId",$ref:"NodeId",description:"Id of the element to set attributes for."},{name:"text",type:"string",description:"Text with a number of attributes. Will parse this text using HTML parser."},{name:"name",type:"string",optional:!0,description:"Attribute name to replace with new attributes derived from text in case text parsed successfully."}],description:"Sets attributes on element with given id. This method is useful when user edits some existing attribute value and types in several attribute name/value pairs."},{name:"removeAttribute",parameters:[{name:"nodeId",$ref:"NodeId",description:"Id of the element to remove attribute from."},{name:"name",type:"string",description:"Name of the attribute to remove."}],description:"Removes attribute with given name from an element with given id."},{name:"getOuterHTML",parameters:[{name:"nodeId",$ref:"NodeId",description:"Id of the node to get markup for."}],returns:[{name:"outerHTML",type:"string",description:"Outer HTML markup."}],description:"Returns node's HTML markup."},{name:"setOuterHTML",parameters:[{name:"nodeId",$ref:"NodeId",description:"Id of the node to set markup for."},{name:"outerHTML",type:"string",description:"Outer HTML markup to set."}],description:"Sets node HTML markup, returns new node id."},{name:"performSearch",parameters:[{name:"query",type:"string",description:"Plain text or query selector or XPath search query."},{name:"includeUserAgentShadowDOM",type:"boolean",optional:!0,description:"True to search in user agent shadow DOM.",experimental:!0}],returns:[{name:"searchId",type:"string",description:"Unique search session identifier."},{name:"resultCount",type:"integer",description:"Number of search results."}],description:"Searches for a given string in the DOM tree. Use <code>getSearchResults</code> to access search results or <code>cancelSearch</code> to end this search session.",experimental:!0},{name:"getSearchResults",parameters:[{name:"searchId",type:"string",description:"Unique search session identifier."},{name:"fromIndex",type:"integer",description:"Start index of the search result to be returned."},{name:"toIndex",type:"integer",description:"End index of the search result to be returned."}],returns:[{name:"nodeIds",type:"array",items:{$ref:"NodeId"},description:"Ids of the search result nodes."}],description:"Returns search results from given <code>fromIndex</code> to given <code>toIndex</code> from the sarch with the given identifier.",experimental:!0},{name:"discardSearchResults",parameters:[{name:"searchId",type:"string",description:"Unique search session identifier."}],description:"Discards search results from the session with the given id. <code>getSearchResults</code> should no longer be called for that search.",experimental:!0},{name:"requestNode",parameters:[{name:"objectId",$ref:"Runtime.RemoteObjectId",description:"JavaScript object id to convert into node."}],returns:[{name:"nodeId",$ref:"NodeId",description:"Node id for given object."}],description:"Requests that the node is sent to the caller given the JavaScript node object reference. All nodes that form the path from the node to the root are also sent to the client as a series of <code>setChildNodes</code> notifications."},{name:"highlightRect",description:"Highlights given rectangle.",redirect:"Overlay"},{name:"highlightNode",description:"Highlights DOM node.",redirect:"Overlay"},{name:"hideHighlight",description:"Hides any highlight.",redirect:"Overlay"},{name:"pushNodeByPathToFrontend",parameters:[{name:"path",type:"string",description:"Path to node in the proprietary format."}],returns:[{name:"nodeId",$ref:"NodeId",description:"Id of the node for given path."}],description:"Requests that the node is sent to the caller given its path. // FIXME, use XPath",experimental:!0},{name:"pushNodesByBackendIdsToFrontend",parameters:[{name:"backendNodeIds",type:"array",items:{$ref:"BackendNodeId"},description:"The array of backend node ids."}],returns:[{name:"nodeIds",type:"array",items:{$ref:"NodeId"},description:"The array of ids of pushed nodes that correspond to the backend ids specified in backendNodeIds."}],description:"Requests that a batch of nodes is sent to the caller given their backend node ids.",experimental:!0},{name:"setInspectedNode",parameters:[{name:"nodeId",$ref:"NodeId",description:"DOM node id to be accessible by means of $x command line API."}],description:"Enables console to refer to the node with given id via $x (see Command Line API for more details $x functions).",experimental:!0},{name:"resolveNode",parameters:[{name:"nodeId",$ref:"NodeId",description:"Id of the node to resolve."},{name:"objectGroup",type:"string",optional:!0,description:"Symbolic group name that can be used to release multiple objects."}],returns:[{name:"object",$ref:"Runtime.RemoteObject",description:"JavaScript object wrapper for given node."}],description:"Resolves JavaScript node object for given node id."},{name:"getAttributes",parameters:[{name:"nodeId",$ref:"NodeId",description:"Id of the node to retrieve attibutes for."}],returns:[{name:"attributes",type:"array",items:{type:"string"},description:"An interleaved array of node attribute names and values."}],description:"Returns attributes for the specified node."},{name:"copyTo",parameters:[{name:"nodeId",$ref:"NodeId",description:"Id of the node to copy."},{name:"targetNodeId",$ref:"NodeId",description:"Id of the element to drop the copy into."},{name:"insertBeforeNodeId",$ref:"NodeId",optional:!0,description:"Drop the copy before this node (if absent, the copy becomes the last child of <code>targetNodeId</code>)."}],returns:[{name:"nodeId",$ref:"NodeId",description:"Id of the node clone."}],description:"Creates a deep copy of the specified node and places it into the target container before the given anchor.",experimental:!0},{name:"moveTo",parameters:[{name:"nodeId",$ref:"NodeId",description:"Id of the node to move."},{name:"targetNodeId",$ref:"NodeId",description:"Id of the element to drop the moved node into."},{name:"insertBeforeNodeId",$ref:"NodeId",optional:!0,description:"Drop node before this one (if absent, the moved node becomes the last child of <code>targetNodeId</code>)."}],returns:[{name:"nodeId",$ref:"NodeId",description:"New id of the moved node."}],description:"Moves node into the new container, places it before the given anchor."},{name:"undo",description:"Undoes the last performed action.",experimental:!0},{name:"redo",description:"Re-does the last undone action.",experimental:!0},{name:"markUndoableState",description:"Marks last undoable state.",experimental:!0},{name:"focus",parameters:[{name:"nodeId",$ref:"NodeId",description:"Id of the node to focus."}],description:"Focuses the given element.",experimental:!0},{name:"setFileInputFiles",parameters:[{name:"nodeId",$ref:"NodeId",description:"Id of the file input node to set files for."},{name:"files",type:"array",items:{type:"string"},description:"Array of file paths to set."}],description:"Sets files for the given file input element.",experimental:!0},{name:"getBoxModel",parameters:[{name:"nodeId",$ref:"NodeId",description:"Id of the node to get box model for."}],returns:[{name:"model",$ref:"BoxModel",description:"Box model for the node."}],description:"Returns boxes for the currently selected nodes.",experimental:!0},{name:"getNodeForLocation",parameters:[{name:"x",type:"integer",description:"X coordinate."},{name:"y",type:"integer",description:"Y coordinate."},{name:"includeUserAgentShadowDOM",type:"boolean",optional:!0,description:"False to skip to the nearest non-UA shadow root ancestor (default: false)."}],returns:[{name:"nodeId",$ref:"NodeId",description:"Id of the node at given coordinates."}],description:"Returns node id at given location.",experimental:!0},{name:"getRelayoutBoundary",parameters:[{name:"nodeId",$ref:"NodeId",description:"Id of the node."}],returns:[{name:"nodeId",$ref:"NodeId",description:"Relayout boundary node id for the given node."}],description:"Returns the id of the nearest ancestor that is a relayout boundary.",experimental:!0}],events:[{name:"documentUpdated",description:"Fired when <code>Document</code> has been totally updated. Node ids are no longer valid."},{name:"setChildNodes",parameters:[{name:"parentId",$ref:"NodeId",description:"Parent node id to populate with children."},{name:"nodes",type:"array",items:{$ref:"Node"},description:"Child nodes array."}],description:"Fired when backend wants to provide client with the missing DOM structure. This happens upon most of the calls requesting node ids."},{name:"attributeModified",parameters:[{name:"nodeId",$ref:"NodeId",description:"Id of the node that has changed."},{name:"name",type:"string",description:"Attribute name."},{name:"value",type:"string",description:"Attribute value."}],description:"Fired when <code>Element</code>'s attribute is modified."},{name:"attributeRemoved",parameters:[{name:"nodeId",$ref:"NodeId",description:"Id of the node that has changed."},{name:"name",type:"string",description:"A ttribute name."}],description:"Fired when <code>Element</code>'s attribute is removed."},{name:"inlineStyleInvalidated",parameters:[{name:"nodeIds",type:"array",items:{$ref:"NodeId"},description:"Ids of the nodes for which the inline styles have been invalidated."}],description:"Fired when <code>Element</code>'s inline style is modified via a CSS property modification.",experimental:!0},{name:"characterDataModified",parameters:[{name:"nodeId",$ref:"NodeId",description:"Id of the node that has changed."},{name:"characterData",type:"string",description:"New text value."}],description:"Mirrors <code>DOMCharacterDataModified</code> event."},{name:"childNodeCountUpdated",parameters:[{name:"nodeId",$ref:"NodeId",description:"Id of the node that has changed."},{name:"childNodeCount",type:"integer",description:"New node count."}],description:"Fired when <code>Container</code>'s child node count has changed."},{name:"childNodeInserted",parameters:[{name:"parentNodeId",$ref:"NodeId",description:"Id of the node that has changed."},{name:"previousNodeId",$ref:"NodeId",description:"If of the previous siblint."},{name:"node",$ref:"Node",description:"Inserted node data."}],description:"Mirrors <code>DOMNodeInserted</code> event."},{name:"childNodeRemoved",parameters:[{name:"parentNodeId",$ref:"NodeId",description:"Parent id."},{name:"nodeId",$ref:"NodeId",description:"Id of the node that has been removed."}],description:"Mirrors <code>DOMNodeRemoved</code> event."},{name:"shadowRootPushed",parameters:[{name:"hostId",$ref:"NodeId",description:"Host element id."},{name:"root",$ref:"Node",description:"Shadow root."}],description:"Called when shadow root is pushed into the element.",experimental:!0},{name:"shadowRootPopped",parameters:[{name:"hostId",$ref:"NodeId",description:"Host element id."},{name:"rootId",$ref:"NodeId",description:"Shadow root id."}],description:"Called when shadow root is popped from the element.",experimental:!0},{name:"pseudoElementAdded",parameters:[{name:"parentId",$ref:"NodeId",description:"Pseudo element's parent element id."},{name:"pseudoElement",$ref:"Node",description:"The added pseudo element."}],description:"Called when a pseudo element is added to an element.",experimental:!0},{name:"pseudoElementRemoved",parameters:[{name:"parentId",$ref:"NodeId",description:"Pseudo element's parent element id."},{name:"pseudoElementId",$ref:"NodeId",description:"The removed pseudo element id."}],description:"Called when a pseudo element is removed from an element.",experimental:!0},{name:"distributedNodesUpdated",parameters:[{name:"insertionPointId",$ref:"NodeId",description:"Insertion point where distrubuted nodes were updated."},{name:"distributedNodes",type:"array",items:{$ref:"BackendNode"},description:"Distributed nodes for given insertion point."}],description:"Called when distrubution is changed.",experimental:!0}]},{domain:"CSS",experimental:!0,description:"This domain exposes CSS read/write operations. All CSS objects (stylesheets, rules, and styles) have an associated <code>id</code> used in subsequent operations on the related object. Each object type has a specific <code>id</code> structure, and those are not interchangeable between objects of different kinds. CSS objects can be loaded using the <code>get*ForNode()</code> calls (which accept a DOM node id). A client can also discover all the existing stylesheets with the <code>getAllStyleSheets()</code> method (or keeping track of the <code>styleSheetAdded</code>/<code>styleSheetRemoved</code> events) and subsequently load the required stylesheet contents using the <code>getStyleSheet[Text]()</code> methods.",dependencies:["DOM"],types:[{id:"StyleSheetId",type:"string"},{id:"StyleSheetOrigin",type:"string",enum:["injected","user-agent","inspector","regular"],description:'Stylesheet type: "injected" for stylesheets injected via extension, "user-agent" for user-agent stylesheets, "inspector" for stylesheets created by the inspector (i.e. those holding the "via inspector" rules), "regular" for regular stylesheets.'},{id:"PseudoElementMatches",type:"object",properties:[{name:"pseudoType",$ref:"DOM.PseudoType",description:"Pseudo element type."},{name:"matches",type:"array",items:{$ref:"RuleMatch"},description:"Matches of CSS rules applicable to the pseudo style."}],description:"CSS rule collection for a single pseudo style."},{id:"InheritedStyleEntry",type:"object",properties:[{name:"inlineStyle",$ref:"CSSStyle",optional:!0,description:"The ancestor node's inline style, if any, in the style inheritance chain."},{name:"matchedCSSRules",type:"array",items:{$ref:"RuleMatch"},description:"Matches of CSS rules matching the ancestor node in the style inheritance chain."}],description:"Inherited CSS rule collection from ancestor node."},{id:"RuleMatch",type:"object",properties:[{name:"rule",$ref:"CSSRule",description:"CSS rule in the match."},{name:"matchingSelectors",type:"array",items:{type:"integer"},description:"Matching selector indices in the rule's selectorList selectors (0-based)."}],description:"Match data for a CSS rule."},{id:"Value",type:"object",properties:[{name:"text",type:"string",description:"Value text."},{name:"range",$ref:"SourceRange",optional:!0,description:"Value range in the underlying resource (if available)."}],description:"Data for a simple selector (these are delimited by commas in a selector list)."},{id:"SelectorList",type:"object",properties:[{name:"selectors",type:"array",items:{$ref:"Value"},description:"Selectors in the list."},{name:"text",type:"string",description:"Rule selector text."}],description:"Selector list data."},{id:"CSSStyleSheetHeader",type:"object",properties:[{name:"styleSheetId",$ref:"StyleSheetId",description:"The stylesheet identifier."},{name:"frameId",$ref:"Page.FrameId",description:"Owner frame identifier."},{name:"sourceURL",type:"string",description:"Stylesheet resource URL."},{name:"sourceMapURL",type:"string",optional:!0,description:"URL of source map associated with the stylesheet (if any)."},{name:"origin",$ref:"StyleSheetOrigin",description:"Stylesheet origin."},{name:"title",type:"string",description:"Stylesheet title."},{name:"ownerNode",$ref:"DOM.BackendNodeId",optional:!0,description:"The backend id for the owner node of the stylesheet."},{name:"disabled",type:"boolean",description:"Denotes whether the stylesheet is disabled."},{name:"hasSourceURL",type:"boolean",optional:!0,description:"Whether the sourceURL field value comes from the sourceURL comment."},{name:"isInline",type:"boolean",description:"Whether this stylesheet is created for STYLE tag by parser. This flag is not set for document.written STYLE tags."},{name:"startLine",type:"number",description:"Line offset of the stylesheet within the resource (zero based)."},{name:"startColumn",type:"number",description:"Column offset of the stylesheet within the resource (zero based)."},{name:"length",type:"number",description:"Size of the content (in characters).",experimental:!0}],description:"CSS stylesheet metainformation."},{id:"CSSRule",type:"object",properties:[{name:"styleSheetId",$ref:"StyleSheetId",optional:!0,description:"The css style sheet identifier (absent for user agent stylesheet and user-specified stylesheet rules) this rule came from."},{name:"selectorList",$ref:"SelectorList",description:"Rule selector data."},{name:"origin",$ref:"StyleSheetOrigin",description:"Parent stylesheet's origin."},{name:"style",$ref:"CSSStyle",description:"Associated style declaration."},{name:"media",type:"array",items:{$ref:"CSSMedia"},optional:!0,description:"Media list array (for rules involving media queries). The array enumerates media queries starting with the innermost one, going outwards."}],description:"CSS rule representation."},{id:"RuleUsage",type:"object",properties:[{name:"styleSheetId",$ref:"StyleSheetId",description:"The css style sheet identifier (absent for user agent stylesheet and user-specified stylesheet rules) this rule came from."},{name:"startOffset",type:"number",description:"Offset of the start of the rule (including selector) from the beginning of the stylesheet."},{name:"endOffset",type:"number",description:"Offset of the end of the rule body from the beginning of the stylesheet."},{name:"used",type:"boolean",description:"Indicates whether the rule was actually used by some element in the page."}],description:"CSS coverage information.",experimental:!0},{id:"SourceRange",type:"object",
+properties:[{name:"startLine",type:"integer",description:"Start line of range."},{name:"startColumn",type:"integer",description:"Start column of range (inclusive)."},{name:"endLine",type:"integer",description:"End line of range"},{name:"endColumn",type:"integer",description:"End column of range (exclusive)."}],description:"Text range within a resource. All numbers are zero-based."},{id:"ShorthandEntry",type:"object",properties:[{name:"name",type:"string",description:"Shorthand name."},{name:"value",type:"string",description:"Shorthand value."},{name:"important",type:"boolean",optional:!0,description:'Whether the property has "!important" annotation (implies <code>false</code> if absent).'}]},{id:"CSSComputedStyleProperty",type:"object",properties:[{name:"name",type:"string",description:"Computed style property name."},{name:"value",type:"string",description:"Computed style property value."}]},{id:"CSSStyle",type:"object",properties:[{name:"styleSheetId",$ref:"StyleSheetId",optional:!0,description:"The css style sheet identifier (absent for user agent stylesheet and user-specified stylesheet rules) this rule came from."},{name:"cssProperties",type:"array",items:{$ref:"CSSProperty"},description:"CSS properties in the style."},{name:"shorthandEntries",type:"array",items:{$ref:"ShorthandEntry"},description:"Computed values for all shorthands found in the style."},{name:"cssText",type:"string",optional:!0,description:"Style declaration text (if available)."},{name:"range",$ref:"SourceRange",optional:!0,description:"Style declaration range in the enclosing stylesheet (if available)."}],description:"CSS style representation."},{id:"CSSProperty",type:"object",properties:[{name:"name",type:"string",description:"The property name."},{name:"value",type:"string",description:"The property value."},{name:"important",type:"boolean",optional:!0,description:'Whether the property has "!important" annotation (implies <code>false</code> if absent).'},{name:"implicit",type:"boolean",optional:!0,description:"Whether the property is implicit (implies <code>false</code> if absent)."},{name:"text",type:"string",optional:!0,description:"The full property text as specified in the style."},{name:"parsedOk",type:"boolean",optional:!0,description:"Whether the property is understood by the browser (implies <code>true</code> if absent)."},{name:"disabled",type:"boolean",optional:!0,description:"Whether the property is disabled by the user (present for source-based properties only)."},{name:"range",$ref:"SourceRange",optional:!0,description:"The entire property range in the enclosing style declaration (if available)."}],description:"CSS property declaration data."},{id:"CSSMedia",type:"object",properties:[{name:"text",type:"string",description:"Media query text."},{name:"source",type:"string",enum:["mediaRule","importRule","linkedSheet","inlineSheet"],description:'Source of the media query: "mediaRule" if specified by a @media rule, "importRule" if specified by an @import rule, "linkedSheet" if specified by a "media" attribute in a linked stylesheet\'s LINK tag, "inlineSheet" if specified by a "media" attribute in an inline stylesheet\'s STYLE tag.'},{name:"sourceURL",type:"string",optional:!0,description:"URL of the document containing the media query description."},{name:"range",$ref:"SourceRange",optional:!0,description:"The associated rule (@media or @import) header range in the enclosing stylesheet (if available)."},{name:"styleSheetId",$ref:"StyleSheetId",optional:!0,description:"Identifier of the stylesheet containing this object (if exists)."},{name:"mediaList",type:"array",items:{$ref:"MediaQuery"},optional:!0,experimental:!0,description:"Array of media queries."}],description:"CSS media rule descriptor."},{id:"MediaQuery",type:"object",properties:[{name:"expressions",type:"array",items:{$ref:"MediaQueryExpression"},description:"Array of media query expressions."},{name:"active",type:"boolean",description:"Whether the media query condition is satisfied."}],description:"Media query descriptor.",experimental:!0},{id:"MediaQueryExpression",type:"object",properties:[{name:"value",type:"number",description:"Media query expression value."},{name:"unit",type:"string",description:"Media query expression units."},{name:"feature",type:"string",description:"Media query expression feature."},{name:"valueRange",$ref:"SourceRange",optional:!0,description:"The associated range of the value text in the enclosing stylesheet (if available)."},{name:"computedLength",type:"number",optional:!0,description:"Computed length of media query expression (if applicable)."}],description:"Media query expression descriptor.",experimental:!0},{id:"PlatformFontUsage",type:"object",properties:[{name:"familyName",type:"string",description:"Font's family name reported by platform."},{name:"isCustomFont",type:"boolean",description:"Indicates if the font was downloaded or resolved locally."},{name:"glyphCount",type:"number",description:"Amount of glyphs that were rendered with this font."}],description:"Information about amount of glyphs that were rendered with given font.",experimental:!0},{id:"CSSKeyframesRule",type:"object",properties:[{name:"animationName",$ref:"Value",description:"Animation name."},{name:"keyframes",type:"array",items:{$ref:"CSSKeyframeRule"},description:"List of keyframes."}],description:"CSS keyframes rule representation."},{id:"CSSKeyframeRule",type:"object",properties:[{name:"styleSheetId",$ref:"StyleSheetId",optional:!0,description:"The css style sheet identifier (absent for user agent stylesheet and user-specified stylesheet rules) this rule came from."},{name:"origin",$ref:"StyleSheetOrigin",description:"Parent stylesheet's origin."},{name:"keyText",$ref:"Value",description:"Associated key text."},{name:"style",$ref:"CSSStyle",description:"Associated style declaration."}],description:"CSS keyframe rule representation."},{id:"StyleDeclarationEdit",type:"object",properties:[{name:"styleSheetId",$ref:"StyleSheetId",description:"The css style sheet identifier."},{name:"range",$ref:"SourceRange",description:"The range of the style text in the enclosing stylesheet."},{name:"text",type:"string",description:"New style text."}],description:"A descriptor of operation to mutate style declaration text."},{id:"InlineTextBox",type:"object",properties:[{name:"boundingBox",$ref:"DOM.Rect",description:"The absolute position bounding box."},{name:"startCharacterIndex",type:"integer",description:"The starting index in characters, for this post layout textbox substring."},{name:"numCharacters",type:"integer",description:"The number of characters in this post layout textbox substring."}],description:"Details of post layout rendered text positions. The exact layout should not be regarded as stable and may change between versions.",experimental:!0},{id:"LayoutTreeNode",type:"object",properties:[{name:"nodeId",$ref:"DOM.NodeId",description:"The id of the related DOM node matching one from DOM.GetDocument."},{name:"boundingBox",$ref:"DOM.Rect",description:"The absolute position bounding box."},{name:"layoutText",type:"string",optional:!0,description:"Contents of the LayoutText if any"},{name:"inlineTextNodes",type:"array",optional:!0,items:{$ref:"InlineTextBox"},description:"The post layout inline text nodes, if any."},{name:"styleIndex",type:"integer",optional:!0,description:"Index into the computedStyles array returned by getLayoutTreeAndStyles."}],description:"Details of an element in the DOM tree with a LayoutObject.",experimental:!0},{id:"ComputedStyle",type:"object",properties:[{name:"properties",type:"array",items:{$ref:"CSSComputedStyleProperty"}}],description:"A subset of the full ComputedStyle as defined by the request whitelist.",experimental:!0}],commands:[{name:"enable",description:"Enables the CSS agent for the given page. Clients should not assume that the CSS agent has been enabled until the result of this command is received."},{name:"disable",description:"Disables the CSS agent for the given page."},{name:"getMatchedStylesForNode",parameters:[{name:"nodeId",$ref:"DOM.NodeId"}],returns:[{name:"inlineStyle",$ref:"CSSStyle",optional:!0,description:"Inline style for the specified DOM node."},{name:"attributesStyle",$ref:"CSSStyle",optional:!0,description:'Attribute-defined element style (e.g. resulting from "width=20 height=100%").'},{name:"matchedCSSRules",type:"array",items:{$ref:"RuleMatch"},optional:!0,description:"CSS rules matching this node, from all applicable stylesheets."},{name:"pseudoElements",type:"array",items:{$ref:"PseudoElementMatches"},optional:!0,description:"Pseudo style matches for this node."},{name:"inherited",type:"array",items:{$ref:"InheritedStyleEntry"},optional:!0,description:"A chain of inherited styles (from the immediate node parent up to the DOM tree root)."},{name:"cssKeyframesRules",type:"array",items:{$ref:"CSSKeyframesRule"},optional:!0,description:"A list of CSS keyframed animations matching this node."}],description:"Returns requested styles for a DOM node identified by <code>nodeId</code>."},{name:"getInlineStylesForNode",parameters:[{name:"nodeId",$ref:"DOM.NodeId"}],returns:[{name:"inlineStyle",$ref:"CSSStyle",optional:!0,description:"Inline style for the specified DOM node."},{name:"attributesStyle",$ref:"CSSStyle",optional:!0,description:'Attribute-defined element style (e.g. resulting from "width=20 height=100%").'}],description:'Returns the styles defined inline (explicitly in the "style" attribute and implicitly, using DOM attributes) for a DOM node identified by <code>nodeId</code>.'},{name:"getComputedStyleForNode",parameters:[{name:"nodeId",$ref:"DOM.NodeId"}],returns:[{name:"computedStyle",type:"array",items:{$ref:"CSSComputedStyleProperty"},description:"Computed style for the specified DOM node."}],description:"Returns the computed style for a DOM node identified by <code>nodeId</code>."},{name:"getPlatformFontsForNode",parameters:[{name:"nodeId",$ref:"DOM.NodeId"}],returns:[{name:"fonts",type:"array",items:{$ref:"PlatformFontUsage"},description:"Usage statistics for every employed platform font."}],description:"Requests information about platform fonts which we used to render child TextNodes in the given node.",experimental:!0},{name:"getStyleSheetText",parameters:[{name:"styleSheetId",$ref:"StyleSheetId"}],returns:[{name:"text",type:"string",description:"The stylesheet text."}],description:"Returns the current textual content and the URL for a stylesheet."},{name:"collectClassNames",parameters:[{name:"styleSheetId",$ref:"StyleSheetId"}],returns:[{name:"classNames",type:"array",items:{type:"string"},description:"Class name list."}],description:"Returns all class names from specified stylesheet.",experimental:!0},{name:"setStyleSheetText",parameters:[{name:"styleSheetId",$ref:"StyleSheetId"},{name:"text",type:"string"}],returns:[{name:"sourceMapURL",type:"string",optional:!0,description:"URL of source map associated with script (if any)."}],description:"Sets the new stylesheet text."},{name:"setRuleSelector",parameters:[{name:"styleSheetId",$ref:"StyleSheetId"},{name:"range",$ref:"SourceRange"},{name:"selector",type:"string"}],returns:[{name:"selectorList",$ref:"SelectorList",description:"The resulting selector list after modification."}],description:"Modifies the rule selector."},{name:"setKeyframeKey",parameters:[{name:"styleSheetId",$ref:"StyleSheetId"},{name:"range",$ref:"SourceRange"},{name:"keyText",type:"string"}],returns:[{name:"keyText",$ref:"Value",description:"The resulting key text after modification."}],description:"Modifies the keyframe rule key text."},{name:"setStyleTexts",parameters:[{name:"edits",type:"array",items:{$ref:"StyleDeclarationEdit"}}],returns:[{name:"styles",type:"array",items:{$ref:"CSSStyle"},description:"The resulting styles after modification."}],description:"Applies specified style edits one after another in the given order."},{name:"setMediaText",parameters:[{name:"styleSheetId",$ref:"StyleSheetId"},{name:"range",$ref:"SourceRange"},{name:"text",type:"string"}],returns:[{name:"media",$ref:"CSSMedia",description:"The resulting CSS media rule after modification."}],description:"Modifies the rule selector."},{name:"createStyleSheet",parameters:[{name:"frameId",$ref:"Page.FrameId",description:'Identifier of the frame where "via-inspector" stylesheet should be created.'}],returns:[{name:"styleSheetId",$ref:"StyleSheetId",description:'Identifier of the created "via-inspector" stylesheet.'}],description:'Creates a new special "via-inspector" stylesheet in the frame with given <code>frameId</code>.'},{name:"addRule",parameters:[{name:"styleSheetId",$ref:"StyleSheetId",description:"The css style sheet identifier where a new rule should be inserted."},{name:"ruleText",type:"string",description:"The text of a new rule."},{name:"location",$ref:"SourceRange",description:"Text position of a new rule in the target style sheet."}],returns:[{name:"rule",$ref:"CSSRule",description:"The newly created rule."}],description:"Inserts a new rule with the given <code>ruleText</code> in a stylesheet with given <code>styleSheetId</code>, at the position specified by <code>location</code>."},{name:"forcePseudoState",parameters:[{name:"nodeId",$ref:"DOM.NodeId",description:"The element id for which to force the pseudo state."},{name:"forcedPseudoClasses",type:"array",items:{type:"string",enum:["active","focus","hover","visited"]},description:"Element pseudo classes to force when computing the element's style."}],description:"Ensures that the given node will have specified pseudo-classes whenever its style is computed by the browser."},{name:"getMediaQueries",returns:[{name:"medias",type:"array",items:{$ref:"CSSMedia"}}],description:"Returns all media queries parsed by the rendering engine.",experimental:!0},{name:"setEffectivePropertyValueForNode",parameters:[{name:"nodeId",$ref:"DOM.NodeId",description:"The element id for which to set property."},{name:"propertyName",type:"string"},{name:"value",type:"string"}],description:"Find a rule with the given active property for the given node and set the new value for this property",experimental:!0},{name:"getBackgroundColors",parameters:[{name:"nodeId",$ref:"DOM.NodeId",description:"Id of the node to get background colors for."}],returns:[{name:"backgroundColors",type:"array",items:{type:"string"},description:"The range of background colors behind this element, if it contains any visible text. If no visible text is present, this will be undefined. In the case of a flat background color, this will consist of simply that color. In the case of a gradient, this will consist of each of the color stops. For anything more complicated, this will be an empty array. Images will be ignored (as if the image had failed to load).",optional:!0}],experimental:!0},{name:"getLayoutTreeAndStyles",parameters:[{name:"computedStyleWhitelist",type:"array",items:{type:"string"},description:"Whitelist of computed styles to return."}],returns:[{name:"layoutTreeNodes",type:"array",items:{$ref:"LayoutTreeNode"}},{name:"computedStyles",type:"array",items:{$ref:"ComputedStyle"}}],description:"For the main document and any content documents, return the LayoutTreeNodes and a whitelisted subset of the computed style. It only returns pushed nodes, on way to pull all nodes is to call DOM.getDocument with a depth of -1.",experimental:!0},{name:"startRuleUsageTracking",description:"Enables the selector recording.",experimental:!0},{name:"takeCoverageDelta",description:"Obtain list of rules that became used since last call to this method (or since start of coverage instrumentation)",returns:[{name:"coverage",type:"array",items:{$ref:"RuleUsage"}}],experimental:!0},{name:"stopRuleUsageTracking",returns:[{name:"ruleUsage",type:"array",items:{$ref:"RuleUsage"}}],description:"The list of rules with an indication of whether these were used",experimental:!0}],events:[{name:"mediaQueryResultChanged",description:"Fires whenever a MediaQuery result changes (for example, after a browser window has been resized.) The current implementation considers only viewport-dependent media features."},{name:"fontsUpdated",description:"Fires whenever a web font gets loaded."},{name:"styleSheetChanged",parameters:[{name:"styleSheetId",$ref:"StyleSheetId"}],description:"Fired whenever a stylesheet is changed as a result of the client operation."},{name:"styleSheetAdded",parameters:[{name:"header",$ref:"CSSStyleSheetHeader",description:"Added stylesheet metainfo."}],description:"Fired whenever an active document stylesheet is added."},{name:"styleSheetRemoved",parameters:[{name:"styleSheetId",$ref:"StyleSheetId",description:"Identifier of the removed stylesheet."}],description:"Fired whenever an active document stylesheet is removed."}]},{domain:"IO",description:"Input/Output operations for streams produced by DevTools.",experimental:!0,types:[{id:"StreamHandle",type:"string"}],commands:[{name:"read",description:"Read a chunk of the stream",parameters:[{name:"handle",$ref:"StreamHandle",description:"Handle of the stream to read."},{name:"offset",type:"integer",optional:!0,description:"Seek to the specified offset before reading (if not specificed, proceed with offset following the last read)."},{name:"size",type:"integer",optional:!0,description:"Maximum number of bytes to read (left upon the agent discretion if not specified)."}],returns:[{name:"data",type:"string",description:"Data that were read."},{name:"eof",type:"boolean",description:"Set if the end-of-file condition occured while reading."}]},{name:"close",description:"Close the stream, discard any temporary backing storage.",parameters:[{name:"handle",$ref:"StreamHandle",description:"Handle of the stream to close."}]}]},{domain:"DOMDebugger",description:"DOM debugging allows setting breakpoints on particular DOM operations and events. JavaScript execution will stop on these operations as if there was a regular breakpoint set.",dependencies:["DOM","Debugger"],types:[{id:"DOMBreakpointType",type:"string",enum:["subtree-modified","attribute-modified","node-removed"],description:"DOM breakpoint type."},{id:"EventListener",type:"object",description:"Object event listener.",properties:[{name:"type",type:"string",description:"<code>EventListener</code>'s type."},{name:"useCapture",type:"boolean",description:"<code>EventListener</code>'s useCapture."},{name:"passive",type:"boolean",description:"<code>EventListener</code>'s passive flag."},{name:"once",type:"boolean",description:"<code>EventListener</code>'s once flag."},{name:"scriptId",$ref:"Runtime.ScriptId",description:"Script id of the handler code."},{name:"lineNumber",type:"integer",description:"Line number in the script (0-based)."},{name:"columnNumber",type:"integer",description:"Column number in the script (0-based)."},{name:"handler",$ref:"Runtime.RemoteObject",optional:!0,description:"Event handler function value."},{name:"originalHandler",$ref:"Runtime.RemoteObject",optional:!0,description:"Event original handler function value."},{name:"backendNodeId",$ref:"DOM.BackendNodeId",optional:!0,description:"Node the listener is added to (if any)."}],experimental:!0}],commands:[{name:"setDOMBreakpoint",parameters:[{name:"nodeId",$ref:"DOM.NodeId",description:"Identifier of the node to set breakpoint on."},{name:"type",$ref:"DOMBreakpointType",description:"Type of the operation to stop upon."}],description:"Sets breakpoint on particular operation with DOM."},{name:"removeDOMBreakpoint",parameters:[{name:"nodeId",$ref:"DOM.NodeId",description:"Identifier of the node to remove breakpoint from."},{name:"type",$ref:"DOMBreakpointType",description:"Type of the breakpoint to remove."}],description:"Removes DOM breakpoint that was set using <code>setDOMBreakpoint</code>."},{name:"setEventListenerBreakpoint",parameters:[{name:"eventName",type:"string",description:"DOM Event name to stop on (any DOM event will do)."},{name:"targetName",type:"string",optional:!0,description:'EventTarget interface name to stop on. If equal to <code>"*"</code> or not provided, will stop on any EventTarget.',experimental:!0}],description:"Sets breakpoint on particular DOM event."},{name:"removeEventListenerBreakpoint",parameters:[{name:"eventName",type:"string",description:"Event name."},{name:"targetName",type:"string",optional:!0,description:"EventTarget interface name.",experimental:!0}],description:"Removes breakpoint on particular DOM event."},{name:"setInstrumentationBreakpoint",parameters:[{name:"eventName",type:"string",description:"Instrumentation name to stop on."}],description:"Sets breakpoint on particular native event.",experimental:!0},{name:"removeInstrumentationBreakpoint",parameters:[{name:"eventName",type:"string",description:"Instrumentation name to stop on."}],description:"Removes breakpoint on particular native event.",experimental:!0},{name:"setXHRBreakpoint",parameters:[{name:"url",type:"string",description:"Resource URL substring. All XHRs having this substring in the URL will get stopped upon."}],description:"Sets breakpoint on XMLHttpRequest."},{name:"removeXHRBreakpoint",parameters:[{name:"url",type:"string",description:"Resource URL substring."}],description:"Removes breakpoint from XMLHttpRequest."},{name:"getEventListeners",experimental:!0,parameters:[{name:"objectId",$ref:"Runtime.RemoteObjectId",description:"Identifier of the object to return listeners for."},{name:"depth",type:"integer",optional:!0,description:"The maximum depth at which Node children should be retrieved, defaults to 1. Use -1 for the entire subtree or provide an integer larger than 0.",experimental:!0},{name:"pierce",type:"boolean",optional:!0,description:"Whether or not iframes and shadow roots should be traversed when returning the subtree (default is false). Reports listeners for all contexts if pierce is enabled.",experimental:!0}],returns:[{name:"listeners",type:"array",items:{$ref:"EventListener"},description:"Array of relevant listeners."}],description:"Returns event listeners of the given object."}]},{domain:"Target",description:"Supports additional targets discovery and allows to attach to them.",experimental:!0,types:[{id:"TargetID",type:"string"},{id:"BrowserContextID",type:"string"},{id:"TargetInfo",type:"object",properties:[{name:"targetId",$ref:"TargetID"},{name:"type",type:"string"},{name:"title",type:"string"},{name:"url",type:"string"}]},{id:"RemoteLocation",type:"object",properties:[{name:"host",type:"string"},{name:"port",type:"integer"}]}],commands:[{name:"setDiscoverTargets",description:"Controls whether to discover available targets and notify via <code>targetCreated/targetDestroyed</code> events.",parameters:[{name:"discover",type:"boolean",description:"Whether to discover available targets."}]},{name:"setAutoAttach",description:"Controls whether to automatically attach to new targets which are considered to be related to this one. When turned on, attaches to all existing related targets as well. When turned off, automatically detaches from all currently attached targets.",parameters:[{name:"autoAttach",type:"boolean",description:"Whether to auto-attach to related targets."},{name:"waitForDebuggerOnStart",type:"boolean",description:"Whether to pause new targets when attaching to them. Use <code>Runtime.runIfWaitingForDebugger</code> to run paused targets."}]},{name:"setAttachToFrames",parameters:[{name:"value",type:"boolean",description:"Whether to attach to frames."}]},{name:"setRemoteLocations",description:"Enables target discovery for the specified locations, when <code>setDiscoverTargets</code> was set to <code>true</code>.",parameters:[{name:"locations",type:"array",items:{$ref:"RemoteLocation"},description:"List of remote locations."}]},{name:"sendMessageToTarget",description:"Sends protocol message to the target with given id.",parameters:[{name:"targetId",$ref:"TargetID"},{name:"message",type:"string"}]},{name:"getTargetInfo",description:"Returns information about a target.",parameters:[{name:"targetId",$ref:"TargetID"}],returns:[{name:"targetInfo",$ref:"TargetInfo"}]},{name:"activateTarget",description:"Activates (focuses) the target.",parameters:[{name:"targetId",$ref:"TargetID"}]},{name:"closeTarget",description:"Closes the target. If the target is a page that gets closed too.",parameters:[{name:"targetId",$ref:"TargetID"}],returns:[{name:"success",type:"boolean"}]},{name:"attachToTarget",description:"Attaches to the target with given id.",parameters:[{name:"targetId",$ref:"TargetID"}],returns:[{name:"success",type:"boolean",description:"Whether attach succeeded."}]},{name:"detachFromTarget",description:"Detaches from the target with given id.",parameters:[{name:"targetId",$ref:"TargetID"}]},{name:"createBrowserContext",description:"Creates a new empty BrowserContext. Similar to an incognito profile but you can have more than one.",returns:[{name:"browserContextId",$ref:"BrowserContextID",description:"The id of the context created."}]},{name:"disposeBrowserContext",description:"Deletes a BrowserContext, will fail of any open page uses it.",parameters:[{name:"browserContextId",$ref:"BrowserContextID"}],returns:[{name:"success",type:"boolean"}]},{name:"createTarget",description:"Creates a new page.",parameters:[{name:"url",type:"string",description:"The initial URL the page will be navigated to."},{name:"width",type:"integer",description:"Frame width in DIP (headless chrome only).",optional:!0},{name:"height",type:"integer",description:"Frame height in DIP (headless chrome only).",optional:!0},{name:"browserContextId",$ref:"BrowserContextID",description:"The browser context to create the page in (headless chrome only).",optional:!0}],returns:[{name:"targetId",$ref:"TargetID",description:"The id of the page opened."}]},{name:"getTargets",description:"Retrieves a list of available targets.",returns:[{name:"targetInfos",type:"array",items:{$ref:"TargetInfo"},description:"The list of targets."}]}],events:[{name:"targetCreated",description:"Issued when a possible inspection target is created.",parameters:[{name:"targetInfo",$ref:"TargetInfo"}]},{name:"targetDestroyed",description:"Issued when a target is destroyed.",parameters:[{name:"targetId",$ref:"TargetID"}]},{name:"attachedToTarget",description:"Issued when attached to target because of auto-attach or <code>attachToTarget</code> command.",parameters:[{name:"targetInfo",$ref:"TargetInfo"},{name:"waitingForDebugger",type:"boolean"}]},{name:"detachedFromTarget",description:"Issued when detached from target for any reason (including <code>detachFromTarget</code> command).",parameters:[{name:"targetId",$ref:"TargetID"}]},{name:"receivedMessageFromTarget",description:"Notifies about new protocol message from attached target.",parameters:[{name:"targetId",$ref:"TargetID"},{name:"message",type:"string"}]}]},{domain:"ServiceWorker",experimental:!0,types:[{id:"ServiceWorkerRegistration",type:"object",description:"ServiceWorker registration.",properties:[{name:"registrationId",type:"string"},{name:"scopeURL",type:"string"},{name:"isDeleted",type:"boolean"}]},{id:"ServiceWorkerVersionRunningStatus",type:"string",enum:["stopped","starting","running","stopping"]},{id:"ServiceWorkerVersionStatus",type:"string",enum:["new","installing","installed","activating","activated","redundant"]},{id:"ServiceWorkerVersion",type:"object",description:"ServiceWorker version.",properties:[{name:"versionId",type:"string"},{name:"registrationId",type:"string"},{name:"scriptURL",type:"string"},{name:"runningStatus",$ref:"ServiceWorkerVersionRunningStatus"},{name:"status",$ref:"ServiceWorkerVersionStatus"},{name:"scriptLastModified",type:"number",optional:!0,description:"The Last-Modified header value of the main script."},{name:"scriptResponseTime",type:"number",optional:!0,description:"The time at which the response headers of the main script were received from the server.  For cached script it is the last time the cache entry was validated."},{name:"controlledClients",type:"array",optional:!0,items:{$ref:"Target.TargetID"}},{name:"targetId",$ref:"Target.TargetID",optional:!0}]},{id:"ServiceWorkerErrorMessage",type:"object",description:"ServiceWorker error message.",properties:[{name:"errorMessage",type:"string"},{name:"registrationId",type:"string"},{name:"versionId",type:"string"},{name:"sourceURL",type:"string"},{name:"lineNumber",type:"integer"},{name:"columnNumber",type:"integer"}]}],commands:[{name:"enable"},{name:"disable"},{name:"unregister",parameters:[{name:"scopeURL",type:"string"}]},{name:"updateRegistration",parameters:[{name:"scopeURL",type:"string"}]},{name:"startWorker",parameters:[{name:"scopeURL",type:"string"}]},{name:"skipWaiting",parameters:[{name:"scopeURL",type:"string"}]},{name:"stopWorker",parameters:[{name:"versionId",type:"string"}]},{name:"inspectWorker",parameters:[{name:"versionId",type:"string"}]},{name:"setForceUpdateOnPageLoad",parameters:[{name:"forceUpdateOnPageLoad",type:"boolean"}]},{name:"deliverPushMessage",parameters:[{name:"origin",type:"string"},{name:"registrationId",type:"string"},{name:"data",type:"string"}]},{name:"dispatchSyncEvent",parameters:[{name:"origin",type:"string"},{name:"registrationId",type:"string"},{name:"tag",type:"string"},{name:"lastChance",type:"boolean"}]}],events:[{name:"workerRegistrationUpdated",parameters:[{name:"registrations",type:"array",items:{$ref:"ServiceWorkerRegistration"}}]},{name:"workerVersionUpdated",parameters:[{name:"versions",type:"array",items:{$ref:"ServiceWorkerVersion"}}]},{name:"workerErrorReported",parameters:[{name:"errorMessage",$ref:"ServiceWorkerErrorMessage"}]}]},{domain:"Input",types:[{id:"TouchPoint",type:"object",experimental:!0,properties:[{name:"state",type:"string",enum:["touchPressed","touchReleased","touchMoved","touchStationary","touchCancelled"],description:"State of the touch point."},{name:"x",type:"integer",description:"X coordinate of the event relative to the main frame's viewport."},{name:"y",type:"integer",description:"Y coordinate of the event relative to the main frame's viewport. 0 refers to the top of the viewport and Y increases as it proceeds towards the bottom of the viewport."},{name:"radiusX",type:"integer",optional:!0,description:"X radius of the touch area (default: 1)."},{name:"radiusY",type:"integer",optional:!0,description:"Y radius of the touch area (default: 1)."},{name:"rotationAngle",type:"number",optional:!0,description:"Rotation angle (default: 0.0)."},{name:"force",type:"number",optional:!0,description:"Force (default: 1.0)."},{name:"id",type:"number",optional:!0,description:"Identifier used to track touch sources between events, must be unique within an event."}]},{id:"GestureSourceType",type:"string",experimental:!0,enum:["default","touch","mouse"]}],commands:[{name:"setIgnoreInputEvents",parameters:[{name:"ignore",type:"boolean",description:"Ignores input events processing when set to true."}],description:"Ignores input events (useful while auditing page)."},{name:"dispatchKeyEvent",parameters:[{name:"type",type:"string",enum:["keyDown","keyUp","rawKeyDown","char"],description:"Type of the key event."},{name:"modifiers",type:"integer",optional:!0,description:"Bit field representing pressed modifier keys. Alt=1, Ctrl=2, Meta/Command=4, Shift=8 (default: 0)."},{name:"timestamp",type:"number",optional:!0,description:"Time at which the event occurred. Measured in UTC time in seconds since January 1, 1970 (default: current time)."},{name:"text",type:"string",optional:!0,description:'Text as generated by processing a virtual key code with a keyboard layout. Not needed for for <code>keyUp</code> and <code>rawKeyDown</code> events (default: "")'},{name:"unmodifiedText",type:"string",optional:!0,description:'Text that would have been generated by the keyboard if no modifiers were pressed (except for shift). Useful for shortcut (accelerator) key handling (default: "").'},{name:"keyIdentifier",type:"string",optional:!0,description:"Unique key identifier (e.g., 'U+0041') (default: \"\")."},{name:"code",type:"string",optional:!0,description:"Unique DOM defined string value for each physical key (e.g., 'KeyA') (default: \"\")."
+},{name:"key",type:"string",optional:!0,description:"Unique DOM defined string value describing the meaning of the key in the context of active modifiers, keyboard layout, etc (e.g., 'AltGr') (default: \"\")."},{name:"windowsVirtualKeyCode",type:"integer",optional:!0,description:"Windows virtual key code (default: 0)."},{name:"nativeVirtualKeyCode",type:"integer",optional:!0,description:"Native virtual key code (default: 0)."},{name:"autoRepeat",type:"boolean",optional:!0,description:"Whether the event was generated from auto repeat (default: false)."},{name:"isKeypad",type:"boolean",optional:!0,description:"Whether the event was generated from the keypad (default: false)."},{name:"isSystemKey",type:"boolean",optional:!0,description:"Whether the event was a system key event (default: false)."}],description:"Dispatches a key event to the page."},{name:"dispatchMouseEvent",parameters:[{name:"type",type:"string",enum:["mousePressed","mouseReleased","mouseMoved"],description:"Type of the mouse event."},{name:"x",type:"integer",description:"X coordinate of the event relative to the main frame's viewport."},{name:"y",type:"integer",description:"Y coordinate of the event relative to the main frame's viewport. 0 refers to the top of the viewport and Y increases as it proceeds towards the bottom of the viewport."},{name:"modifiers",type:"integer",optional:!0,description:"Bit field representing pressed modifier keys. Alt=1, Ctrl=2, Meta/Command=4, Shift=8 (default: 0)."},{name:"timestamp",type:"number",optional:!0,description:"Time at which the event occurred. Measured in UTC time in seconds since January 1, 1970 (default: current time)."},{name:"button",type:"string",enum:["none","left","middle","right"],optional:!0,description:'Mouse button (default: "none").'},{name:"clickCount",type:"integer",optional:!0,description:"Number of times the mouse button was clicked (default: 0)."}],description:"Dispatches a mouse event to the page."},{name:"dispatchTouchEvent",experimental:!0,parameters:[{name:"type",type:"string",enum:["touchStart","touchEnd","touchMove"],description:"Type of the touch event."},{name:"touchPoints",type:"array",items:{$ref:"TouchPoint"},description:"Touch points."},{name:"modifiers",type:"integer",optional:!0,description:"Bit field representing pressed modifier keys. Alt=1, Ctrl=2, Meta/Command=4, Shift=8 (default: 0)."},{name:"timestamp",type:"number",optional:!0,description:"Time at which the event occurred. Measured in UTC time in seconds since January 1, 1970 (default: current time)."}],description:"Dispatches a touch event to the page."},{name:"emulateTouchFromMouseEvent",experimental:!0,parameters:[{name:"type",type:"string",enum:["mousePressed","mouseReleased","mouseMoved","mouseWheel"],description:"Type of the mouse event."},{name:"x",type:"integer",description:"X coordinate of the mouse pointer in DIP."},{name:"y",type:"integer",description:"Y coordinate of the mouse pointer in DIP."},{name:"timestamp",type:"number",description:"Time at which the event occurred. Measured in UTC time in seconds since January 1, 1970."},{name:"button",type:"string",enum:["none","left","middle","right"],description:"Mouse button."},{name:"deltaX",type:"number",optional:!0,description:"X delta in DIP for mouse wheel event (default: 0)."},{name:"deltaY",type:"number",optional:!0,description:"Y delta in DIP for mouse wheel event (default: 0)."},{name:"modifiers",type:"integer",optional:!0,description:"Bit field representing pressed modifier keys. Alt=1, Ctrl=2, Meta/Command=4, Shift=8 (default: 0)."},{name:"clickCount",type:"integer",optional:!0,description:"Number of times the mouse button was clicked (default: 0)."}],description:"Emulates touch event from the mouse event parameters."},{name:"synthesizePinchGesture",parameters:[{name:"x",type:"integer",description:"X coordinate of the start of the gesture in CSS pixels."},{name:"y",type:"integer",description:"Y coordinate of the start of the gesture in CSS pixels."},{name:"scaleFactor",type:"number",description:"Relative scale factor after zooming (>1.0 zooms in, <1.0 zooms out)."},{name:"relativeSpeed",type:"integer",optional:!0,description:"Relative pointer speed in pixels per second (default: 800)."},{name:"gestureSourceType",$ref:"GestureSourceType",optional:!0,description:"Which type of input events to be generated (default: 'default', which queries the platform for the preferred input type)."}],description:"Synthesizes a pinch gesture over a time period by issuing appropriate touch events.",experimental:!0},{name:"synthesizeScrollGesture",parameters:[{name:"x",type:"integer",description:"X coordinate of the start of the gesture in CSS pixels."},{name:"y",type:"integer",description:"Y coordinate of the start of the gesture in CSS pixels."},{name:"xDistance",type:"integer",optional:!0,description:"The distance to scroll along the X axis (positive to scroll left)."},{name:"yDistance",type:"integer",optional:!0,description:"The distance to scroll along the Y axis (positive to scroll up)."},{name:"xOverscroll",type:"integer",optional:!0,description:"The number of additional pixels to scroll back along the X axis, in addition to the given distance."},{name:"yOverscroll",type:"integer",optional:!0,description:"The number of additional pixels to scroll back along the Y axis, in addition to the given distance."},{name:"preventFling",type:"boolean",optional:!0,description:"Prevent fling (default: true)."},{name:"speed",type:"integer",optional:!0,description:"Swipe speed in pixels per second (default: 800)."},{name:"gestureSourceType",$ref:"GestureSourceType",optional:!0,description:"Which type of input events to be generated (default: 'default', which queries the platform for the preferred input type)."},{name:"repeatCount",type:"integer",optional:!0,description:"The number of times to repeat the gesture (default: 0)."},{name:"repeatDelayMs",type:"integer",optional:!0,description:"The number of milliseconds delay between each repeat. (default: 250)."},{name:"interactionMarkerName",type:"string",optional:!0,description:'The name of the interaction markers to generate, if not empty (default: "").'}],description:"Synthesizes a scroll gesture over a time period by issuing appropriate touch events.",experimental:!0},{name:"synthesizeTapGesture",parameters:[{name:"x",type:"integer",description:"X coordinate of the start of the gesture in CSS pixels."},{name:"y",type:"integer",description:"Y coordinate of the start of the gesture in CSS pixels."},{name:"duration",type:"integer",optional:!0,description:"Duration between touchdown and touchup events in ms (default: 50)."},{name:"tapCount",type:"integer",optional:!0,description:"Number of times to perform the tap (e.g. 2 for double tap, default: 1)."},{name:"gestureSourceType",$ref:"GestureSourceType",optional:!0,description:"Which type of input events to be generated (default: 'default', which queries the platform for the preferred input type)."}],description:"Synthesizes a tap gesture over a time period by issuing appropriate touch events.",experimental:!0}],events:[]},{domain:"LayerTree",experimental:!0,dependencies:["DOM"],types:[{id:"LayerId",type:"string",description:"Unique Layer identifier."},{id:"SnapshotId",type:"string",description:"Unique snapshot identifier."},{id:"ScrollRect",type:"object",description:"Rectangle where scrolling happens on the main thread.",properties:[{name:"rect",$ref:"DOM.Rect",description:"Rectangle itself."},{name:"type",type:"string",enum:["RepaintsOnScroll","TouchEventHandler","WheelEventHandler"],description:"Reason for rectangle to force scrolling on the main thread"}]},{id:"PictureTile",type:"object",description:"Serialized fragment of layer picture along with its offset within the layer.",properties:[{name:"x",type:"number",description:"Offset from owning layer left boundary"},{name:"y",type:"number",description:"Offset from owning layer top boundary"},{name:"picture",type:"string",description:"Base64-encoded snapshot data."}]},{id:"Layer",type:"object",description:"Information about a compositing layer.",properties:[{name:"layerId",$ref:"LayerId",description:"The unique id for this layer."},{name:"parentLayerId",$ref:"LayerId",optional:!0,description:"The id of parent (not present for root)."},{name:"backendNodeId",$ref:"DOM.BackendNodeId",optional:!0,description:"The backend id for the node associated with this layer."},{name:"offsetX",type:"number",description:"Offset from parent layer, X coordinate."},{name:"offsetY",type:"number",description:"Offset from parent layer, Y coordinate."},{name:"width",type:"number",description:"Layer width."},{name:"height",type:"number",description:"Layer height."},{name:"transform",type:"array",items:{type:"number"},minItems:16,maxItems:16,optional:!0,description:"Transformation matrix for layer, default is identity matrix"},{name:"anchorX",type:"number",optional:!0,description:"Transform anchor point X, absent if no transform specified"},{name:"anchorY",type:"number",optional:!0,description:"Transform anchor point Y, absent if no transform specified"},{name:"anchorZ",type:"number",optional:!0,description:"Transform anchor point Z, absent if no transform specified"},{name:"paintCount",type:"integer",description:"Indicates how many time this layer has painted."},{name:"drawsContent",type:"boolean",description:"Indicates whether this layer hosts any content, rather than being used for transform/scrolling purposes only."},{name:"invisible",type:"boolean",optional:!0,description:"Set if layer is not visible."},{name:"scrollRects",type:"array",items:{$ref:"ScrollRect"},optional:!0,description:"Rectangles scrolling on main thread only."}]},{id:"PaintProfile",type:"array",description:"Array of timings, one per paint step.",items:{type:"number",description:"A time in seconds since the end of previous step (for the first step, time since painting started)"}}],commands:[{name:"enable",description:"Enables compositing tree inspection."},{name:"disable",description:"Disables compositing tree inspection."},{name:"compositingReasons",parameters:[{name:"layerId",$ref:"LayerId",description:"The id of the layer for which we want to get the reasons it was composited."}],description:"Provides the reasons why the given layer was composited.",returns:[{name:"compositingReasons",type:"array",items:{type:"string"},description:"A list of strings specifying reasons for the given layer to become composited."}]},{name:"makeSnapshot",parameters:[{name:"layerId",$ref:"LayerId",description:"The id of the layer."}],description:"Returns the layer snapshot identifier.",returns:[{name:"snapshotId",$ref:"SnapshotId",description:"The id of the layer snapshot."}]},{name:"loadSnapshot",parameters:[{name:"tiles",type:"array",items:{$ref:"PictureTile"},minItems:1,description:"An array of tiles composing the snapshot."}],description:"Returns the snapshot identifier.",returns:[{name:"snapshotId",$ref:"SnapshotId",description:"The id of the snapshot."}]},{name:"releaseSnapshot",parameters:[{name:"snapshotId",$ref:"SnapshotId",description:"The id of the layer snapshot."}],description:"Releases layer snapshot captured by the back-end."},{name:"profileSnapshot",parameters:[{name:"snapshotId",$ref:"SnapshotId",description:"The id of the layer snapshot."},{name:"minRepeatCount",type:"integer",optional:!0,description:"The maximum number of times to replay the snapshot (1, if not specified)."},{name:"minDuration",type:"number",optional:!0,description:"The minimum duration (in seconds) to replay the snapshot."},{name:"clipRect",$ref:"DOM.Rect",optional:!0,description:"The clip rectangle to apply when replaying the snapshot."}],returns:[{name:"timings",type:"array",items:{$ref:"PaintProfile"},description:"The array of paint profiles, one per run."}]},{name:"replaySnapshot",parameters:[{name:"snapshotId",$ref:"SnapshotId",description:"The id of the layer snapshot."},{name:"fromStep",type:"integer",optional:!0,description:"The first step to replay from (replay from the very start if not specified)."},{name:"toStep",type:"integer",optional:!0,description:"The last step to replay to (replay till the end if not specified)."},{name:"scale",type:"number",optional:!0,description:"The scale to apply while replaying (defaults to 1)."}],description:"Replays the layer snapshot and returns the resulting bitmap.",returns:[{name:"dataURL",type:"string",description:"A data: URL for resulting image."}]},{name:"snapshotCommandLog",parameters:[{name:"snapshotId",$ref:"SnapshotId",description:"The id of the layer snapshot."}],description:"Replays the layer snapshot and returns canvas log.",returns:[{name:"commandLog",type:"array",items:{type:"object"},description:"The array of canvas function calls."}]}],events:[{name:"layerTreeDidChange",parameters:[{name:"layers",type:"array",items:{$ref:"Layer"},optional:!0,description:"Layer tree, absent if not in the comspositing mode."}]},{name:"layerPainted",parameters:[{name:"layerId",$ref:"LayerId",description:"The id of the painted layer."},{name:"clip",$ref:"DOM.Rect",description:"Clip rectangle."}]}]},{domain:"DeviceOrientation",experimental:!0,commands:[{name:"setDeviceOrientationOverride",description:"Overrides the Device Orientation.",parameters:[{name:"alpha",type:"number",description:"Mock alpha"},{name:"beta",type:"number",description:"Mock beta"},{name:"gamma",type:"number",description:"Mock gamma"}]},{name:"clearDeviceOrientationOverride",description:"Clears the overridden Device Orientation."}]},{domain:"Tracing",dependencies:["IO"],experimental:!0,types:[{id:"MemoryDumpConfig",type:"object",description:'Configuration for memory dump. Used only when "memory-infra" category is enabled.'},{id:"TraceConfig",type:"object",properties:[{name:"recordMode",type:"string",optional:!0,enum:["recordUntilFull","recordContinuously","recordAsMuchAsPossible","echoToConsole"],description:"Controls how the trace buffer stores data."},{name:"enableSampling",type:"boolean",optional:!0,description:"Turns on JavaScript stack sampling."},{name:"enableSystrace",type:"boolean",optional:!0,description:"Turns on system tracing."},{name:"enableArgumentFilter",type:"boolean",optional:!0,description:"Turns on argument filter."},{name:"includedCategories",type:"array",items:{type:"string"},optional:!0,description:"Included category filters."},{name:"excludedCategories",type:"array",items:{type:"string"},optional:!0,description:"Excluded category filters."},{name:"syntheticDelays",type:"array",items:{type:"string"},optional:!0,description:"Configuration to synthesize the delays in tracing."},{name:"memoryDumpConfig",$ref:"MemoryDumpConfig",optional:!0,description:'Configuration for memory dump triggers. Used only when "memory-infra" category is enabled.'}]}],commands:[{name:"start",description:"Start trace events collection.",parameters:[{name:"categories",type:"string",optional:!0,deprecated:!0,description:"Category/tag filter"},{name:"options",type:"string",optional:!0,deprecated:!0,description:"Tracing options"},{name:"bufferUsageReportingInterval",type:"number",optional:!0,description:"If set, the agent will issue bufferUsage events at this interval, specified in milliseconds"},{name:"transferMode",type:"string",enum:["ReportEvents","ReturnAsStream"],optional:!0,description:"Whether to report trace events as series of dataCollected events or to save trace to a stream (defaults to <code>ReportEvents</code>)."},{name:"traceConfig",$ref:"TraceConfig",optional:!0,description:""}]},{name:"end",description:"Stop trace events collection."},{name:"getCategories",description:"Gets supported tracing categories.",returns:[{name:"categories",type:"array",items:{type:"string"},description:"A list of supported tracing categories."}]},{name:"requestMemoryDump",description:"Request a global memory dump.",returns:[{name:"dumpGuid",type:"string",description:"GUID of the resulting global memory dump."},{name:"success",type:"boolean",description:"True iff the global memory dump succeeded."}]},{name:"recordClockSyncMarker",description:"Record a clock sync marker in the trace.",parameters:[{name:"syncId",type:"string",description:"The ID of this clock sync marker"}]}],events:[{name:"dataCollected",parameters:[{name:"value",type:"array",items:{type:"object"}}],description:"Contains an bucket of collected trace events. When tracing is stopped collected events will be send as a sequence of dataCollected events followed by tracingComplete event."},{name:"tracingComplete",description:"Signals that tracing is stopped and there is no trace buffers pending flush, all data were delivered via dataCollected events.",parameters:[{name:"stream",$ref:"IO.StreamHandle",optional:!0,description:"A handle of the stream that holds resulting trace data."}]},{name:"bufferUsage",parameters:[{name:"percentFull",type:"number",optional:!0,description:"A number in range [0..1] that indicates the used size of event buffer as a fraction of its total size."},{name:"eventCount",type:"number",optional:!0,description:"An approximate number of events in the trace log."},{name:"value",type:"number",optional:!0,description:"A number in range [0..1] that indicates the used size of event buffer as a fraction of its total size."}]}]},{domain:"Animation",experimental:!0,dependencies:["Runtime","DOM"],types:[{id:"Animation",type:"object",experimental:!0,properties:[{name:"id",type:"string",description:"<code>Animation</code>'s id."},{name:"name",type:"string",description:"<code>Animation</code>'s name."},{name:"pausedState",type:"boolean",experimental:!0,description:"<code>Animation</code>'s internal paused state."},{name:"playState",type:"string",description:"<code>Animation</code>'s play state."},{name:"playbackRate",type:"number",description:"<code>Animation</code>'s playback rate."},{name:"startTime",type:"number",description:"<code>Animation</code>'s start time."},{name:"currentTime",type:"number",description:"<code>Animation</code>'s current time."},{name:"source",$ref:"AnimationEffect",description:"<code>Animation</code>'s source animation node."},{name:"type",type:"string",enum:["CSSTransition","CSSAnimation","WebAnimation"],description:"Animation type of <code>Animation</code>."},{name:"cssId",type:"string",optional:!0,description:"A unique ID for <code>Animation</code> representing the sources that triggered this CSS animation/transition."}],description:"Animation instance."},{id:"AnimationEffect",type:"object",experimental:!0,properties:[{name:"delay",type:"number",description:"<code>AnimationEffect</code>'s delay."},{name:"endDelay",type:"number",description:"<code>AnimationEffect</code>'s end delay."},{name:"iterationStart",type:"number",description:"<code>AnimationEffect</code>'s iteration start."},{name:"iterations",type:"number",description:"<code>AnimationEffect</code>'s iterations."},{name:"duration",type:"number",description:"<code>AnimationEffect</code>'s iteration duration."},{name:"direction",type:"string",description:"<code>AnimationEffect</code>'s playback direction."},{name:"fill",type:"string",description:"<code>AnimationEffect</code>'s fill mode."},{name:"backendNodeId",$ref:"DOM.BackendNodeId",description:"<code>AnimationEffect</code>'s target node."},{name:"keyframesRule",$ref:"KeyframesRule",optional:!0,description:"<code>AnimationEffect</code>'s keyframes."},{name:"easing",type:"string",description:"<code>AnimationEffect</code>'s timing function."}],description:"AnimationEffect instance"},{id:"KeyframesRule",type:"object",properties:[{name:"name",type:"string",optional:!0,description:"CSS keyframed animation's name."},{name:"keyframes",type:"array",items:{$ref:"KeyframeStyle"},description:"List of animation keyframes."}],description:"Keyframes Rule"},{id:"KeyframeStyle",type:"object",properties:[{name:"offset",type:"string",description:"Keyframe's time offset."},{name:"easing",type:"string",description:"<code>AnimationEffect</code>'s timing function."}],description:"Keyframe Style"}],commands:[{name:"enable",description:"Enables animation domain notifications."},{name:"disable",description:"Disables animation domain notifications."},{name:"getPlaybackRate",returns:[{name:"playbackRate",type:"number",description:"Playback rate for animations on page."}],description:"Gets the playback rate of the document timeline."},{name:"setPlaybackRate",parameters:[{name:"playbackRate",type:"number",description:"Playback rate for animations on page"}],description:"Sets the playback rate of the document timeline."},{name:"getCurrentTime",parameters:[{name:"id",type:"string",description:"Id of animation."}],returns:[{name:"currentTime",type:"number",description:"Current time of the page."}],description:"Returns the current time of the an animation."},{name:"setPaused",parameters:[{name:"animations",type:"array",items:{type:"string"},description:"Animations to set the pause state of."},{name:"paused",type:"boolean",description:"Paused state to set to."}],description:"Sets the paused state of a set of animations."},{name:"setTiming",parameters:[{name:"animationId",type:"string",description:"Animation id."},{name:"duration",type:"number",description:"Duration of the animation."},{name:"delay",type:"number",description:"Delay of the animation."}],description:"Sets the timing of an animation node."},{name:"seekAnimations",parameters:[{name:"animations",type:"array",items:{type:"string"},description:"List of animation ids to seek."},{name:"currentTime",type:"number",description:"Set the current time of each animation."}],description:"Seek a set of animations to a particular time within each animation."},{name:"releaseAnimations",parameters:[{name:"animations",type:"array",items:{type:"string"},description:"List of animation ids to seek."}],description:"Releases a set of animations to no longer be manipulated."},{name:"resolveAnimation",parameters:[{name:"animationId",type:"string",description:"Animation id."}],returns:[{name:"remoteObject",$ref:"Runtime.RemoteObject",description:"Corresponding remote object."}],description:"Gets the remote object of the Animation."}],events:[{name:"animationCreated",parameters:[{name:"id",type:"string",description:"Id of the animation that was created."}],description:"Event for each animation that has been created."},{name:"animationStarted",parameters:[{name:"animation",$ref:"Animation",description:"Animation that was started."}],description:"Event for animation that has been started."},{name:"animationCanceled",parameters:[{name:"id",type:"string",description:"Id of the animation that was cancelled."}],description:"Event for when an animation has been cancelled."}]},{domain:"Accessibility",experimental:!0,dependencies:["DOM"],types:[{id:"AXNodeId",type:"string",description:"Unique accessibility node identifier."},{id:"AXValueType",type:"string",enum:["boolean","tristate","booleanOrUndefined","idref","idrefList","integer","node","nodeList","number","string","computedString","token","tokenList","domRelation","role","internalRole","valueUndefined"],description:"Enum of possible property types."},{id:"AXValueSourceType",type:"string",enum:["attribute","implicit","style","contents","placeholder","relatedElement"],description:"Enum of possible property sources."},{id:"AXValueNativeSourceType",type:"string",enum:["figcaption","label","labelfor","labelwrapped","legend","tablecaption","title","other"],description:"Enum of possible native property sources (as a subtype of a particular AXValueSourceType)."},{id:"AXValueSource",type:"object",properties:[{name:"type",$ref:"AXValueSourceType",description:"What type of source this is."},{name:"value",$ref:"AXValue",description:"The value of this property source.",optional:!0},{name:"attribute",type:"string",description:"The name of the relevant attribute, if any.",optional:!0},{name:"attributeValue",$ref:"AXValue",description:"The value of the relevant attribute, if any.",optional:!0},{name:"superseded",type:"boolean",description:"Whether this source is superseded by a higher priority source.",optional:!0},{name:"nativeSource",$ref:"AXValueNativeSourceType",description:"The native markup source for this value, e.g. a <label> element.",optional:!0},{name:"nativeSourceValue",$ref:"AXValue",description:"The value, such as a node or node list, of the native source.",optional:!0},{name:"invalid",type:"boolean",description:"Whether the value for this property is invalid.",optional:!0},{name:"invalidReason",type:"string",description:"Reason for the value being invalid, if it is.",optional:!0}],description:"A single source for a computed AX property."},{id:"AXRelatedNode",type:"object",properties:[{name:"backendDOMNodeId",$ref:"DOM.BackendNodeId",description:"The BackendNodeId of the related DOM node."},{name:"idref",type:"string",description:"The IDRef value provided, if any.",optional:!0},{name:"text",type:"string",description:"The text alternative of this node in the current context.",optional:!0}]},{id:"AXProperty",type:"object",properties:[{name:"name",type:"string",description:"The name of this property."},{name:"value",$ref:"AXValue",description:"The value of this property."}]},{id:"AXValue",type:"object",properties:[{name:"type",$ref:"AXValueType",description:"The type of this value."},{name:"value",type:"any",description:"The computed value of this property.",optional:!0},{name:"relatedNodes",type:"array",items:{$ref:"AXRelatedNode"},description:"One or more related nodes, if applicable.",optional:!0},{name:"sources",type:"array",items:{$ref:"AXValueSource"},description:"The sources which contributed to the computation of this property.",optional:!0}],description:"A single computed AX property."},{id:"AXGlobalStates",type:"string",enum:["disabled","hidden","hiddenRoot","invalid","keyshortcuts","roledescription"],description:"States which apply to every AX node."},{id:"AXLiveRegionAttributes",type:"string",enum:["live","atomic","relevant","busy","root"],description:"Attributes which apply to nodes in live regions."},{id:"AXWidgetAttributes",type:"string",enum:["autocomplete","haspopup","level","multiselectable","orientation","multiline","readonly","required","valuemin","valuemax","valuetext"],description:"Attributes which apply to widgets."},{id:"AXWidgetStates",type:"string",enum:["checked","expanded","modal","pressed","selected"],description:"States which apply to widgets."},{id:"AXRelationshipAttributes",type:"string",enum:["activedescendant","controls","describedby","details","errormessage","flowto","labelledby","owns"],description:"Relationships between elements other than parent/child/sibling."},{id:"AXNode",type:"object",properties:[{name:"nodeId",$ref:"AXNodeId",description:"Unique identifier for this node."},{name:"ignored",type:"boolean",description:"Whether this node is ignored for accessibility"},{name:"ignoredReasons",type:"array",items:{$ref:"AXProperty"},description:"Collection of reasons why this node is hidden.",optional:!0},{name:"role",$ref:"AXValue",description:"This <code>Node</code>'s role, whether explicit or implicit.",optional:!0},{name:"name",$ref:"AXValue",description:"The accessible name for this <code>Node</code>.",optional:!0},{name:"description",$ref:"AXValue",description:"The accessible description for this <code>Node</code>.",optional:!0},{name:"value",$ref:"AXValue",description:"The value for this <code>Node</code>.",optional:!0},{name:"properties",type:"array",items:{$ref:"AXProperty"},description:"All other properties",optional:!0},{name:"childIds",type:"array",items:{$ref:"AXNodeId"},description:"IDs for each of this node's child nodes.",optional:!0},{name:"backendDOMNodeId",$ref:"DOM.BackendNodeId",description:"The backend ID for the associated DOM node, if any.",optional:!0}],description:"A node in the accessibility tree."}],commands:[{name:"getPartialAXTree",parameters:[{name:"nodeId",$ref:"DOM.NodeId",description:"ID of node to get the partial accessibility tree for."},{name:"fetchRelatives",type:"boolean",description:"Whether to fetch this nodes ancestors, siblings and children. Defaults to true.",optional:!0}],returns:[{name:"nodes",type:"array",items:{$ref:"AXNode"},description:"The <code>Accessibility.AXNode</code> for this DOM node, if it exists, plus its ancestors, siblings and children, if requested."}],description:"Fetches the accessibility node and partial accessibility tree for this DOM node, if it exists.",experimental:!0}]},{domain:"Storage",experimental:!0,types:[{id:"StorageType",type:"string",enum:["appcache","cookies","file_systems","indexeddb","local_storage","shader_cache","websql","service_workers","cache_storage","all"],description:"Enum of possible storage types."}],commands:[{name:"clearDataForOrigin",parameters:[{name:"origin",type:"string",description:"Security origin."},{name:"storageTypes",type:"string",description:"Comma separated origin names."}],description:"Clears storage for origin."}]},{domain:"Log",description:"Provides access to log entries.",dependencies:["Runtime","Network"],experimental:!0,types:[{id:"LogEntry",type:"object",description:"Log entry.",properties:[{name:"source",type:"string",enum:["xml","javascript","network","storage","appcache","rendering","security","deprecation","worker","violation","intervention","other"],description:"Log entry source."},{name:"level",type:"string",enum:["verbose","info","warning","error"],description:"Log entry severity."},{name:"text",type:"string",description:"Logged text."},{name:"timestamp",$ref:"Runtime.Timestamp",description:"Timestamp when this entry was added."},{name:"url",type:"string",optional:!0,description:"URL of the resource if known."},{name:"lineNumber",type:"integer",optional:!0,description:"Line number in the resource."},{name:"stackTrace",$ref:"Runtime.StackTrace",optional:!0,description:"JavaScript stack trace."},{name:"networkRequestId",$ref:"Network.RequestId",optional:!0,description:"Identifier of the network request associated with this entry."},{name:"workerId",type:"string",optional:!0,description:"Identifier of the worker associated with this entry."}]},{id:"ViolationSetting",type:"object",description:"Violation configuration setting.",properties:[{name:"name",type:"string",enum:["longTask","longLayout","blockedEvent","blockedParser","discouragedAPIUse","handler","recurringHandler"],description:"Violation type."},{name:"threshold",type:"number",description:"Time threshold to trigger upon."}]}],commands:[{name:"enable",description:"Enables log domain, sends the entries collected so far to the client by means of the <code>entryAdded</code> notification."},{name:"disable",description:"Disables log domain, prevents further log entries from being reported to the client."},{name:"clear",description:"Clears the log."},{name:"startViolationsReport",parameters:[{name:"config",type:"array",items:{$ref:"ViolationSetting"},description:"Configuration for violations."}],description:"start violation reporting."},{name:"stopViolationsReport",description:"Stop violation reporting."}],events:[{name:"entryAdded",parameters:[{name:"entry",$ref:"LogEntry",description:"The entry."}],description:"Issued when new message was logged."}]},{domain:"SystemInfo",description:"The SystemInfo domain defines methods and events for querying low-level system information.",experimental:!0,types:[{id:"GPUDevice",type:"object",properties:[{name:"vendorId",type:"number",description:"PCI ID of the GPU vendor, if available; 0 otherwise."},{name:"deviceId",type:"number",description:"PCI ID of the GPU device, if available; 0 otherwise."},{name:"vendorString",type:"string",description:"String description of the GPU vendor, if the PCI ID is not available."},{name:"deviceString",type:"string",description:"String description of the GPU device, if the PCI ID is not available."}],description:"Describes a single graphics processor (GPU)."},{id:"GPUInfo",type:"object",properties:[{name:"devices",type:"array",items:{$ref:"GPUDevice"},description:"The graphics devices on the system. Element 0 is the primary GPU."},{name:"auxAttributes",type:"object",optional:!0,
+description:"An optional dictionary of additional GPU related attributes."},{name:"featureStatus",type:"object",optional:!0,description:"An optional dictionary of graphics features and their status."},{name:"driverBugWorkarounds",type:"array",items:{type:"string"},description:"An optional array of GPU driver bug workarounds."}],description:"Provides information about the GPU(s) on the system."}],commands:[{name:"getInfo",description:"Returns information about the system.",returns:[{name:"gpu",$ref:"GPUInfo",description:"Information about the GPUs on the system."},{name:"modelName",type:"string",description:"A platform-dependent description of the model of the machine. On Mac OS, this is, for example, 'MacBookPro'. Will be the empty string if not supported."},{name:"modelVersion",type:"string",description:"A platform-dependent description of the version of the machine. On Mac OS, this is, for example, '10.1'. Will be the empty string if not supported."},{name:"commandLine",type:"string",description:"The command line string used to launch the browser. Will be the empty string if not supported."}]}]},{domain:"Tethering",description:"The Tethering domain defines methods and events for browser port binding.",experimental:!0,commands:[{name:"bind",description:"Request browser port binding.",parameters:[{name:"port",type:"integer",description:"Port number to bind."}]},{name:"unbind",description:"Request browser port unbinding.",parameters:[{name:"port",type:"integer",description:"Port number to unbind."}]}],events:[{name:"accepted",description:"Informs that port was successfully bound and got a specified connection id.",parameters:[{name:"port",type:"integer",description:"Port number that was successfully bound."},{name:"connectionId",type:"string",description:"Connection id to be used."}]}]},{domain:"Browser",description:"The Browser domain defines methods and events for browser managing.",experimental:!0,types:[{id:"WindowID",type:"integer"},{id:"WindowState",type:"string",enum:["normal","minimized","maximized","fullscreen"],description:"The state of the browser window."},{id:"Bounds",type:"object",description:"Browser window bounds information",properties:[{name:"left",type:"integer",optional:!0,description:"The offset from the left edge of the screen to the window in pixels."},{name:"top",type:"integer",optional:!0,description:"The offset from the top edge of the screen to the window in pixels."},{name:"width",type:"integer",optional:!0,description:"The window width in pixels."},{name:"height",type:"integer",optional:!0,description:"The window height in pixels."},{name:"windowState",$ref:"WindowState",optional:!0,description:"The window state. Default to normal."}]}],commands:[{name:"getWindowForTarget",description:"Get the browser window that contains the devtools target.",parameters:[{name:"targetId",$ref:"Target.TargetID",description:"Devtools agent host id."}],returns:[{name:"windowId",$ref:"WindowID",description:"Browser window id."},{name:"bounds",$ref:"Bounds",description:"Bounds information of the window. When window state is 'minimized', the restored window position and size are returned."}]},{name:"setWindowBounds",description:"Set position and/or size of the browser window.",parameters:[{name:"windowId",$ref:"WindowID",description:"Browser window id."},{name:"bounds",$ref:"Bounds",description:"New window bounds. The 'minimized', 'maximized' and 'fullscreen' states cannot be combined with 'left', 'top', 'width' or 'height'. Leaves unspecified fields unchanged."}]},{name:"getWindowBounds",description:"Get position and size of the browser window.",parameters:[{name:"windowId",$ref:"WindowID",description:"Browser window id."}],returns:[{name:"bounds",$ref:"Bounds",description:"Bounds information of the window. When window state is 'minimized', the restored window position and size are returned."}]}]},{domain:"Schema",description:"Provides information about the protocol schema.",types:[{id:"Domain",type:"object",description:"Description of the protocol domain.",properties:[{name:"name",type:"string",description:"Domain name."},{name:"version",type:"string",description:"Domain version."}]}],commands:[{name:"getDomains",description:"Returns supported domains.",handlers:["browser","renderer"],returns:[{name:"domains",type:"array",items:{$ref:"Domain"},description:"List of supported domains."}]}]},{domain:"Runtime",description:"Runtime domain exposes JavaScript runtime by means of remote evaluation and mirror objects. Evaluation results are returned as mirror object that expose object type, string representation and unique identifier that can be used for further object reference. Original objects are maintained in memory unless they are either explicitly released or are released along with the other objects in their object group.",types:[{id:"ScriptId",type:"string",description:"Unique script identifier."},{id:"RemoteObjectId",type:"string",description:"Unique object identifier."},{id:"UnserializableValue",type:"string",enum:["Infinity","NaN","-Infinity","-0"],description:"Primitive value which cannot be JSON-stringified."},{id:"RemoteObject",type:"object",description:"Mirror object referencing original JavaScript object.",properties:[{name:"type",type:"string",enum:["object","function","undefined","string","number","boolean","symbol"],description:"Object type."},{name:"subtype",type:"string",optional:!0,enum:["array","null","node","regexp","date","map","set","weakmap","weakset","iterator","generator","error","proxy","promise","typedarray"],description:"Object subtype hint. Specified for <code>object</code> type values only."},{name:"className",type:"string",optional:!0,description:"Object class (constructor) name. Specified for <code>object</code> type values only."},{name:"value",type:"any",optional:!0,description:"Remote object value in case of primitive values or JSON values (if it was requested)."},{name:"unserializableValue",$ref:"UnserializableValue",optional:!0,description:"Primitive value which can not be JSON-stringified does not have <code>value</code>, but gets this property."},{name:"description",type:"string",optional:!0,description:"String representation of the object."},{name:"objectId",$ref:"RemoteObjectId",optional:!0,description:"Unique object identifier (for non-primitive values)."},{name:"preview",$ref:"ObjectPreview",optional:!0,description:"Preview containing abbreviated property values. Specified for <code>object</code> type values only.",experimental:!0},{name:"customPreview",$ref:"CustomPreview",optional:!0,experimental:!0}]},{id:"CustomPreview",type:"object",experimental:!0,properties:[{name:"header",type:"string"},{name:"hasBody",type:"boolean"},{name:"formatterObjectId",$ref:"RemoteObjectId"},{name:"bindRemoteObjectFunctionId",$ref:"RemoteObjectId"},{name:"configObjectId",$ref:"RemoteObjectId",optional:!0}]},{id:"ObjectPreview",type:"object",experimental:!0,description:"Object containing abbreviated remote object value.",properties:[{name:"type",type:"string",enum:["object","function","undefined","string","number","boolean","symbol"],description:"Object type."},{name:"subtype",type:"string",optional:!0,enum:["array","null","node","regexp","date","map","set","weakmap","weakset","iterator","generator","error"],description:"Object subtype hint. Specified for <code>object</code> type values only."},{name:"description",type:"string",optional:!0,description:"String representation of the object."},{name:"overflow",type:"boolean",description:"True iff some of the properties or entries of the original object did not fit."},{name:"properties",type:"array",items:{$ref:"PropertyPreview"},description:"List of the properties."},{name:"entries",type:"array",items:{$ref:"EntryPreview"},optional:!0,description:"List of the entries. Specified for <code>map</code> and <code>set</code> subtype values only."}]},{id:"PropertyPreview",type:"object",experimental:!0,properties:[{name:"name",type:"string",description:"Property name."},{name:"type",type:"string",enum:["object","function","undefined","string","number","boolean","symbol","accessor"],description:"Object type. Accessor means that the property itself is an accessor property."},{name:"value",type:"string",optional:!0,description:"User-friendly property value string."},{name:"valuePreview",$ref:"ObjectPreview",optional:!0,description:"Nested value preview."},{name:"subtype",type:"string",optional:!0,enum:["array","null","node","regexp","date","map","set","weakmap","weakset","iterator","generator","error"],description:"Object subtype hint. Specified for <code>object</code> type values only."}]},{id:"EntryPreview",type:"object",experimental:!0,properties:[{name:"key",$ref:"ObjectPreview",optional:!0,description:"Preview of the key. Specified for map-like collection entries."},{name:"value",$ref:"ObjectPreview",description:"Preview of the value."}]},{id:"PropertyDescriptor",type:"object",description:"Object property descriptor.",properties:[{name:"name",type:"string",description:"Property name or symbol description."},{name:"value",$ref:"RemoteObject",optional:!0,description:"The value associated with the property."},{name:"writable",type:"boolean",optional:!0,description:"True if the value associated with the property may be changed (data descriptors only)."},{name:"get",$ref:"RemoteObject",optional:!0,description:"A function which serves as a getter for the property, or <code>undefined</code> if there is no getter (accessor descriptors only)."},{name:"set",$ref:"RemoteObject",optional:!0,description:"A function which serves as a setter for the property, or <code>undefined</code> if there is no setter (accessor descriptors only)."},{name:"configurable",type:"boolean",description:"True if the type of this property descriptor may be changed and if the property may be deleted from the corresponding object."},{name:"enumerable",type:"boolean",description:"True if this property shows up during enumeration of the properties on the corresponding object."},{name:"wasThrown",type:"boolean",optional:!0,description:"True if the result was thrown during the evaluation."},{name:"isOwn",optional:!0,type:"boolean",description:"True if the property is owned for the object."},{name:"symbol",$ref:"RemoteObject",optional:!0,description:"Property symbol object, if the property is of the <code>symbol</code> type."}]},{id:"InternalPropertyDescriptor",type:"object",description:"Object internal property descriptor. This property isn't normally visible in JavaScript code.",properties:[{name:"name",type:"string",description:"Conventional property name."},{name:"value",$ref:"RemoteObject",optional:!0,description:"The value associated with the property."}]},{id:"CallArgument",type:"object",description:"Represents function call argument. Either remote object id <code>objectId</code>, primitive <code>value</code>, unserializable primitive value or neither of (for undefined) them should be specified.",properties:[{name:"value",type:"any",optional:!0,description:"Primitive value."},{name:"unserializableValue",$ref:"UnserializableValue",optional:!0,description:"Primitive value which can not be JSON-stringified."},{name:"objectId",$ref:"RemoteObjectId",optional:!0,description:"Remote object handle."}]},{id:"ExecutionContextId",type:"integer",description:"Id of an execution context."},{id:"ExecutionContextDescription",type:"object",description:"Description of an isolated world.",properties:[{name:"id",$ref:"ExecutionContextId",description:"Unique id of the execution context. It can be used to specify in which execution context script evaluation should be performed."},{name:"origin",type:"string",description:"Execution context origin."},{name:"name",type:"string",description:"Human readable name describing given context."},{name:"auxData",type:"object",optional:!0,description:"Embedder-specific auxiliary data."}]},{id:"ExceptionDetails",type:"object",description:"Detailed information about exception (or error) that was thrown during script compilation or execution.",properties:[{name:"exceptionId",type:"integer",description:"Exception id."},{name:"text",type:"string",description:"Exception text, which should be used together with exception object when available."},{name:"lineNumber",type:"integer",description:"Line number of the exception location (0-based)."},{name:"columnNumber",type:"integer",description:"Column number of the exception location (0-based)."},{name:"scriptId",$ref:"ScriptId",optional:!0,description:"Script ID of the exception location."},{name:"url",type:"string",optional:!0,description:"URL of the exception location, to be used when the script was not reported."},{name:"stackTrace",$ref:"StackTrace",optional:!0,description:"JavaScript stack trace if available."},{name:"exception",$ref:"RemoteObject",optional:!0,description:"Exception object if available."},{name:"executionContextId",$ref:"ExecutionContextId",optional:!0,description:"Identifier of the context where exception happened."}]},{id:"Timestamp",type:"number",description:"Number of milliseconds since epoch."},{id:"CallFrame",type:"object",description:"Stack entry for runtime errors and assertions.",properties:[{name:"functionName",type:"string",description:"JavaScript function name."},{name:"scriptId",$ref:"ScriptId",description:"JavaScript script id."},{name:"url",type:"string",description:"JavaScript script name or url."},{name:"lineNumber",type:"integer",description:"JavaScript script line number (0-based)."},{name:"columnNumber",type:"integer",description:"JavaScript script column number (0-based)."}]},{id:"StackTrace",type:"object",description:"Call frames for assertions or error messages.",properties:[{name:"description",type:"string",optional:!0,description:"String label of this stack trace. For async traces this may be a name of the function that initiated the async call."},{name:"callFrames",type:"array",items:{$ref:"CallFrame"},description:"JavaScript function name."},{name:"parent",$ref:"StackTrace",optional:!0,description:"Asynchronous JavaScript stack trace that preceded this stack, if available."},{name:"promiseCreationFrame",$ref:"CallFrame",optional:!0,experimental:!0,description:"Creation frame of the Promise which produced the next synchronous trace when resolved, if available."}]}],commands:[{name:"evaluate",parameters:[{name:"expression",type:"string",description:"Expression to evaluate."},{name:"objectGroup",type:"string",optional:!0,description:"Symbolic group name that can be used to release multiple objects."},{name:"includeCommandLineAPI",type:"boolean",optional:!0,description:"Determines whether Command Line API should be available during the evaluation."},{name:"silent",type:"boolean",optional:!0,description:"In silent mode exceptions thrown during evaluation are not reported and do not pause execution. Overrides <code>setPauseOnException</code> state."},{name:"contextId",$ref:"ExecutionContextId",optional:!0,description:"Specifies in which execution context to perform evaluation. If the parameter is omitted the evaluation will be performed in the context of the inspected page."},{name:"returnByValue",type:"boolean",optional:!0,description:"Whether the result is expected to be a JSON object that should be sent by value."},{name:"generatePreview",type:"boolean",optional:!0,experimental:!0,description:"Whether preview should be generated for the result."},{name:"userGesture",type:"boolean",optional:!0,experimental:!0,description:"Whether execution should be treated as initiated by user in the UI."},{name:"awaitPromise",type:"boolean",optional:!0,description:"Whether execution should wait for promise to be resolved. If the result of evaluation is not a Promise, it's considered to be an error."}],returns:[{name:"result",$ref:"RemoteObject",description:"Evaluation result."},{name:"exceptionDetails",$ref:"ExceptionDetails",optional:!0,description:"Exception details."}],description:"Evaluates expression on global object."},{name:"awaitPromise",parameters:[{name:"promiseObjectId",$ref:"RemoteObjectId",description:"Identifier of the promise."},{name:"returnByValue",type:"boolean",optional:!0,description:"Whether the result is expected to be a JSON object that should be sent by value."},{name:"generatePreview",type:"boolean",optional:!0,description:"Whether preview should be generated for the result."}],returns:[{name:"result",$ref:"RemoteObject",description:"Promise result. Will contain rejected value if promise was rejected."},{name:"exceptionDetails",$ref:"ExceptionDetails",optional:!0,description:"Exception details if stack strace is available."}],description:"Add handler to promise with given promise object id."},{name:"callFunctionOn",parameters:[{name:"objectId",$ref:"RemoteObjectId",description:"Identifier of the object to call function on."},{name:"functionDeclaration",type:"string",description:"Declaration of the function to call."},{name:"arguments",type:"array",items:{$ref:"CallArgument",description:"Call argument."},optional:!0,description:"Call arguments. All call arguments must belong to the same JavaScript world as the target object."},{name:"silent",type:"boolean",optional:!0,description:"In silent mode exceptions thrown during evaluation are not reported and do not pause execution. Overrides <code>setPauseOnException</code> state."},{name:"returnByValue",type:"boolean",optional:!0,description:"Whether the result is expected to be a JSON object which should be sent by value."},{name:"generatePreview",type:"boolean",optional:!0,experimental:!0,description:"Whether preview should be generated for the result."},{name:"userGesture",type:"boolean",optional:!0,experimental:!0,description:"Whether execution should be treated as initiated by user in the UI."},{name:"awaitPromise",type:"boolean",optional:!0,description:"Whether execution should wait for promise to be resolved. If the result of evaluation is not a Promise, it's considered to be an error."}],returns:[{name:"result",$ref:"RemoteObject",description:"Call result."},{name:"exceptionDetails",$ref:"ExceptionDetails",optional:!0,description:"Exception details."}],description:"Calls function with given declaration on the given object. Object group of the result is inherited from the target object."},{name:"getProperties",parameters:[{name:"objectId",$ref:"RemoteObjectId",description:"Identifier of the object to return properties for."},{name:"ownProperties",optional:!0,type:"boolean",description:"If true, returns properties belonging only to the element itself, not to its prototype chain."},{name:"accessorPropertiesOnly",optional:!0,type:"boolean",description:"If true, returns accessor properties (with getter/setter) only; internal properties are not returned either.",experimental:!0},{name:"generatePreview",type:"boolean",optional:!0,experimental:!0,description:"Whether preview should be generated for the results."}],returns:[{name:"result",type:"array",items:{$ref:"PropertyDescriptor"},description:"Object properties."},{name:"internalProperties",optional:!0,type:"array",items:{$ref:"InternalPropertyDescriptor"},description:"Internal object properties (only of the element itself)."},{name:"exceptionDetails",$ref:"ExceptionDetails",optional:!0,description:"Exception details."}],description:"Returns properties of a given object. Object group of the result is inherited from the target object."},{name:"releaseObject",parameters:[{name:"objectId",$ref:"RemoteObjectId",description:"Identifier of the object to release."}],description:"Releases remote object with given id."},{name:"releaseObjectGroup",parameters:[{name:"objectGroup",type:"string",description:"Symbolic object group name."}],description:"Releases all remote objects that belong to a given group."},{name:"runIfWaitingForDebugger",description:"Tells inspected instance to run if it was waiting for debugger to attach."},{name:"enable",description:"Enables reporting of execution contexts creation by means of <code>executionContextCreated</code> event. When the reporting gets enabled the event will be sent immediately for each existing execution context."},{name:"disable",description:"Disables reporting of execution contexts creation."},{name:"discardConsoleEntries",description:"Discards collected exceptions and console API calls."},{name:"setCustomObjectFormatterEnabled",parameters:[{name:"enabled",type:"boolean"}],experimental:!0},{name:"compileScript",parameters:[{name:"expression",type:"string",description:"Expression to compile."},{name:"sourceURL",type:"string",description:"Source url to be set for the script."},{name:"persistScript",type:"boolean",description:"Specifies whether the compiled script should be persisted."},{name:"executionContextId",$ref:"ExecutionContextId",optional:!0,description:"Specifies in which execution context to perform script run. If the parameter is omitted the evaluation will be performed in the context of the inspected page."}],returns:[{name:"scriptId",$ref:"ScriptId",optional:!0,description:"Id of the script."},{name:"exceptionDetails",$ref:"ExceptionDetails",optional:!0,description:"Exception details."}],description:"Compiles expression."},{name:"runScript",parameters:[{name:"scriptId",$ref:"ScriptId",description:"Id of the script to run."},{name:"executionContextId",$ref:"ExecutionContextId",optional:!0,description:"Specifies in which execution context to perform script run. If the parameter is omitted the evaluation will be performed in the context of the inspected page."},{name:"objectGroup",type:"string",optional:!0,description:"Symbolic group name that can be used to release multiple objects."},{name:"silent",type:"boolean",optional:!0,description:"In silent mode exceptions thrown during evaluation are not reported and do not pause execution. Overrides <code>setPauseOnException</code> state."},{name:"includeCommandLineAPI",type:"boolean",optional:!0,description:"Determines whether Command Line API should be available during the evaluation."},{name:"returnByValue",type:"boolean",optional:!0,description:"Whether the result is expected to be a JSON object which should be sent by value."},{name:"generatePreview",type:"boolean",optional:!0,description:"Whether preview should be generated for the result."},{name:"awaitPromise",type:"boolean",optional:!0,description:"Whether execution should wait for promise to be resolved. If the result of evaluation is not a Promise, it's considered to be an error."}],returns:[{name:"result",$ref:"RemoteObject",description:"Run result."},{name:"exceptionDetails",$ref:"ExceptionDetails",optional:!0,description:"Exception details."}],description:"Runs script with given id in a given context."}],events:[{name:"executionContextCreated",parameters:[{name:"context",$ref:"ExecutionContextDescription",description:"A newly created execution context."}],description:"Issued when new execution context is created."},{name:"executionContextDestroyed",parameters:[{name:"executionContextId",$ref:"ExecutionContextId",description:"Id of the destroyed context"}],description:"Issued when execution context is destroyed."},{name:"executionContextsCleared",description:"Issued when all executionContexts were cleared in browser"},{name:"exceptionThrown",description:"Issued when exception was thrown and unhandled.",parameters:[{name:"timestamp",$ref:"Timestamp",description:"Timestamp of the exception."},{name:"exceptionDetails",$ref:"ExceptionDetails"}]},{name:"exceptionRevoked",description:"Issued when unhandled exception was revoked.",parameters:[{name:"reason",type:"string",description:"Reason describing why exception was revoked."},{name:"exceptionId",type:"integer",description:"The id of revoked exception, as reported in <code>exceptionUnhandled</code>."}]},{name:"consoleAPICalled",description:"Issued when console API was called.",parameters:[{name:"type",type:"string",enum:["log","debug","info","error","warning","dir","dirxml","table","trace","clear","startGroup","startGroupCollapsed","endGroup","assert","profile","profileEnd","count","timeEnd"],description:"Type of the call."},{name:"args",type:"array",items:{$ref:"RemoteObject"},description:"Call arguments."},{name:"executionContextId",$ref:"ExecutionContextId",description:"Identifier of the context where the call was made."},{name:"timestamp",$ref:"Timestamp",description:"Call timestamp."},{name:"stackTrace",$ref:"StackTrace",optional:!0,description:"Stack trace captured when the call was made."}]},{name:"inspectRequested",description:"Issued when object should be inspected (for example, as a result of inspect() command line API call).",parameters:[{name:"object",$ref:"RemoteObject"},{name:"hints",type:"object"}]}]},{domain:"Debugger",description:"Debugger domain exposes JavaScript debugging capabilities. It allows setting and removing breakpoints, stepping through execution, exploring stack traces, etc.",dependencies:["Runtime"],types:[{id:"BreakpointId",type:"string",description:"Breakpoint identifier."},{id:"CallFrameId",type:"string",description:"Call frame identifier."},{id:"Location",type:"object",properties:[{name:"scriptId",$ref:"Runtime.ScriptId",description:"Script identifier as reported in the <code>Debugger.scriptParsed</code>."},{name:"lineNumber",type:"integer",description:"Line number in the script (0-based)."},{name:"columnNumber",type:"integer",optional:!0,description:"Column number in the script (0-based)."}],description:"Location in the source code."},{id:"ScriptPosition",experimental:!0,type:"object",properties:[{name:"lineNumber",type:"integer"},{name:"columnNumber",type:"integer"}],description:"Location in the source code."},{id:"CallFrame",type:"object",properties:[{name:"callFrameId",$ref:"CallFrameId",description:"Call frame identifier. This identifier is only valid while the virtual machine is paused."},{name:"functionName",type:"string",description:"Name of the JavaScript function called on this call frame."},{name:"functionLocation",$ref:"Location",optional:!0,experimental:!0,description:"Location in the source code."},{name:"location",$ref:"Location",description:"Location in the source code."},{name:"scopeChain",type:"array",items:{$ref:"Scope"},description:"Scope chain for this call frame."},{name:"this",$ref:"Runtime.RemoteObject",description:"<code>this</code> object for this call frame."},{name:"returnValue",$ref:"Runtime.RemoteObject",optional:!0,description:"The value being returned, if the function is at return point."}],description:"JavaScript call frame. Array of call frames form the call stack."},{id:"Scope",type:"object",properties:[{name:"type",type:"string",enum:["global","local","with","closure","catch","block","script","eval","module"],description:"Scope type."},{name:"object",$ref:"Runtime.RemoteObject",description:"Object representing the scope. For <code>global</code> and <code>with</code> scopes it represents the actual object; for the rest of the scopes, it is artificial transient object enumerating scope variables as its properties."},{name:"name",type:"string",optional:!0},{name:"startLocation",$ref:"Location",optional:!0,description:"Location in the source code where scope starts"},{name:"endLocation",$ref:"Location",optional:!0,description:"Location in the source code where scope ends"}],description:"Scope description."},{id:"SearchMatch",type:"object",description:"Search match for resource.",properties:[{name:"lineNumber",type:"number",description:"Line number in resource content."},{name:"lineContent",type:"string",description:"Line with match content."}],experimental:!0},{id:"BreakLocation",type:"object",properties:[{name:"scriptId",$ref:"Runtime.ScriptId",description:"Script identifier as reported in the <code>Debugger.scriptParsed</code>."},{name:"lineNumber",type:"integer",description:"Line number in the script (0-based)."},{name:"columnNumber",type:"integer",optional:!0,description:"Column number in the script (0-based)."},{name:"type",type:"string",enum:["debuggerStatement","call","return"],optional:!0}],experimental:!0}],commands:[{name:"enable",description:"Enables debugger for the given page. Clients should not assume that the debugging has been enabled until the result for this command is received."},{name:"disable",description:"Disables debugger for given page."},{name:"setBreakpointsActive",parameters:[{name:"active",type:"boolean",description:"New value for breakpoints active state."}],description:"Activates / deactivates all breakpoints on the page."},{name:"setSkipAllPauses",parameters:[{name:"skip",type:"boolean",description:"New value for skip pauses state."}],description:"Makes page not interrupt on any pauses (breakpoint, exception, dom exception etc)."},{name:"setBreakpointByUrl",parameters:[{name:"lineNumber",type:"integer",description:"Line number to set breakpoint at."},{name:"url",type:"string",optional:!0,description:"URL of the resources to set breakpoint on."},{name:"urlRegex",type:"string",optional:!0,description:"Regex pattern for the URLs of the resources to set breakpoints on. Either <code>url</code> or <code>urlRegex</code> must be specified."},{name:"columnNumber",type:"integer",optional:!0,description:"Offset in the line to set breakpoint at."},{name:"condition",type:"string",optional:!0,description:"Expression to use as a breakpoint condition. When specified, debugger will only stop on the breakpoint if this expression evaluates to true."}],returns:[{name:"breakpointId",$ref:"BreakpointId",description:"Id of the created breakpoint for further reference."},{name:"locations",type:"array",items:{$ref:"Location"},description:"List of the locations this breakpoint resolved into upon addition."}],description:"Sets JavaScript breakpoint at given location specified either by URL or URL regex. Once this command is issued, all existing parsed scripts will have breakpoints resolved and returned in <code>locations</code> property. Further matching script parsing will result in subsequent <code>breakpointResolved</code> events issued. This logical breakpoint will survive page reloads."},{name:"setBreakpoint",parameters:[{name:"location",$ref:"Location",description:"Location to set breakpoint in."},{name:"condition",type:"string",optional:!0,description:"Expression to use as a breakpoint condition. When specified, debugger will only stop on the breakpoint if this expression evaluates to true."}],returns:[{name:"breakpointId",$ref:"BreakpointId",description:"Id of the created breakpoint for further reference."},{name:"actualLocation",$ref:"Location",description:"Location this breakpoint resolved into."}],description:"Sets JavaScript breakpoint at a given location."},{name:"removeBreakpoint",parameters:[{name:"breakpointId",$ref:"BreakpointId"}],description:"Removes JavaScript breakpoint."},{name:"getPossibleBreakpoints",parameters:[{name:"start",$ref:"Location",description:"Start of range to search possible breakpoint locations in."},{name:"end",$ref:"Location",optional:!0,description:"End of range to search possible breakpoint locations in (excluding). When not specified, end of scripts is used as end of range."},{name:"restrictToFunction",type:"boolean",optional:!0,description:"Only consider locations which are in the same (non-nested) function as start."}],returns:[{name:"locations",type:"array",items:{$ref:"BreakLocation"},description:"List of the possible breakpoint locations."}],description:"Returns possible locations for breakpoint. scriptId in start and end range locations should be the same.",experimental:!0},{name:"continueToLocation",parameters:[{name:"location",$ref:"Location",description:"Location to continue to."},{name:"targetCallFrames",type:"string",enum:["any","current"],optional:!0,experimental:!0}],description:"Continues execution until specific location is reached."},{name:"stepOver",description:"Steps over the statement."},{name:"stepInto",description:"Steps into the function call."},{name:"stepOut",description:"Steps out of the function call."},{name:"pause",description:"Stops on the next JavaScript statement."},{name:"scheduleStepIntoAsync",description:"Steps into next scheduled async task if any is scheduled before next pause. Returns success when async task is actually scheduled, returns error if no task were scheduled or another scheduleStepIntoAsync was called.",
+experimental:!0},{name:"resume",description:"Resumes JavaScript execution."},{name:"searchInContent",parameters:[{name:"scriptId",$ref:"Runtime.ScriptId",description:"Id of the script to search in."},{name:"query",type:"string",description:"String to search for."},{name:"caseSensitive",type:"boolean",optional:!0,description:"If true, search is case sensitive."},{name:"isRegex",type:"boolean",optional:!0,description:"If true, treats string parameter as regex."}],returns:[{name:"result",type:"array",items:{$ref:"SearchMatch"},description:"List of search matches."}],experimental:!0,description:"Searches for given string in script content."},{name:"setScriptSource",parameters:[{name:"scriptId",$ref:"Runtime.ScriptId",description:"Id of the script to edit."},{name:"scriptSource",type:"string",description:"New content of the script."},{name:"dryRun",type:"boolean",optional:!0,description:" If true the change will not actually be applied. Dry run may be used to get result description without actually modifying the code."}],returns:[{name:"callFrames",type:"array",optional:!0,items:{$ref:"CallFrame"},description:"New stack trace in case editing has happened while VM was stopped."},{name:"stackChanged",type:"boolean",optional:!0,description:"Whether current call stack  was modified after applying the changes."},{name:"asyncStackTrace",$ref:"Runtime.StackTrace",optional:!0,description:"Async stack trace, if any."},{name:"exceptionDetails",optional:!0,$ref:"Runtime.ExceptionDetails",description:"Exception details if any."}],description:"Edits JavaScript source live."},{name:"restartFrame",parameters:[{name:"callFrameId",$ref:"CallFrameId",description:"Call frame identifier to evaluate on."}],returns:[{name:"callFrames",type:"array",items:{$ref:"CallFrame"},description:"New stack trace."},{name:"asyncStackTrace",$ref:"Runtime.StackTrace",optional:!0,description:"Async stack trace, if any."}],description:"Restarts particular call frame from the beginning."},{name:"getScriptSource",parameters:[{name:"scriptId",$ref:"Runtime.ScriptId",description:"Id of the script to get source for."}],returns:[{name:"scriptSource",type:"string",description:"Script source."}],description:"Returns source for the script with given id."},{name:"setPauseOnExceptions",parameters:[{name:"state",type:"string",enum:["none","uncaught","all"],description:"Pause on exceptions mode."}],description:"Defines pause on exceptions state. Can be set to stop on all exceptions, uncaught exceptions or no exceptions. Initial pause on exceptions state is <code>none</code>."},{name:"evaluateOnCallFrame",parameters:[{name:"callFrameId",$ref:"CallFrameId",description:"Call frame identifier to evaluate on."},{name:"expression",type:"string",description:"Expression to evaluate."},{name:"objectGroup",type:"string",optional:!0,description:"String object group name to put result into (allows rapid releasing resulting object handles using <code>releaseObjectGroup</code>)."},{name:"includeCommandLineAPI",type:"boolean",optional:!0,description:"Specifies whether command line API should be available to the evaluated expression, defaults to false."},{name:"silent",type:"boolean",optional:!0,description:"In silent mode exceptions thrown during evaluation are not reported and do not pause execution. Overrides <code>setPauseOnException</code> state."},{name:"returnByValue",type:"boolean",optional:!0,description:"Whether the result is expected to be a JSON object that should be sent by value."},{name:"generatePreview",type:"boolean",optional:!0,experimental:!0,description:"Whether preview should be generated for the result."},{name:"throwOnSideEffect",type:"boolean",optional:!0,experimental:!0,description:"Whether to throw an exception if side effect cannot be ruled out during evaluation."}],returns:[{name:"result",$ref:"Runtime.RemoteObject",description:"Object wrapper for the evaluation result."},{name:"exceptionDetails",$ref:"Runtime.ExceptionDetails",optional:!0,description:"Exception details."}],description:"Evaluates expression on a given call frame."},{name:"setVariableValue",parameters:[{name:"scopeNumber",type:"integer",description:"0-based number of scope as was listed in scope chain. Only 'local', 'closure' and 'catch' scope types are allowed. Other scopes could be manipulated manually."},{name:"variableName",type:"string",description:"Variable name."},{name:"newValue",$ref:"Runtime.CallArgument",description:"New variable value."},{name:"callFrameId",$ref:"CallFrameId",description:"Id of callframe that holds variable."}],description:"Changes value of variable in a callframe. Object-based scopes are not supported and must be mutated manually."},{name:"setAsyncCallStackDepth",parameters:[{name:"maxDepth",type:"integer",description:"Maximum depth of async call stacks. Setting to <code>0</code> will effectively disable collecting async call stacks (default)."}],description:"Enables or disables async call stacks tracking."},{name:"setBlackboxPatterns",parameters:[{name:"patterns",type:"array",items:{type:"string"},description:"Array of regexps that will be used to check script url for blackbox state."}],experimental:!0,description:"Replace previous blackbox patterns with passed ones. Forces backend to skip stepping/pausing in scripts with url matching one of the patterns. VM will try to leave blackboxed script by performing 'step in' several times, finally resorting to 'step out' if unsuccessful."},{name:"setBlackboxedRanges",parameters:[{name:"scriptId",$ref:"Runtime.ScriptId",description:"Id of the script."},{name:"positions",type:"array",items:{$ref:"ScriptPosition"}}],experimental:!0,description:"Makes backend skip steps in the script in blackboxed ranges. VM will try leave blacklisted scripts by performing 'step in' several times, finally resorting to 'step out' if unsuccessful. Positions array contains positions where blackbox state is changed. First interval isn't blackboxed. Array should be sorted."}],events:[{name:"scriptParsed",parameters:[{name:"scriptId",$ref:"Runtime.ScriptId",description:"Identifier of the script parsed."},{name:"url",type:"string",description:"URL or name of the script parsed (if any)."},{name:"startLine",type:"integer",description:"Line offset of the script within the resource with given URL (for script tags)."},{name:"startColumn",type:"integer",description:"Column offset of the script within the resource with given URL."},{name:"endLine",type:"integer",description:"Last line of the script."},{name:"endColumn",type:"integer",description:"Length of the last line of the script."},{name:"executionContextId",$ref:"Runtime.ExecutionContextId",description:"Specifies script creation context."},{name:"hash",type:"string",description:"Content hash of the script."},{name:"executionContextAuxData",type:"object",optional:!0,description:"Embedder-specific auxiliary data."},{name:"isLiveEdit",type:"boolean",optional:!0,description:"True, if this script is generated as a result of the live edit operation.",experimental:!0},{name:"sourceMapURL",type:"string",optional:!0,description:"URL of source map associated with script (if any)."},{name:"hasSourceURL",type:"boolean",optional:!0,description:"True, if this script has sourceURL.",experimental:!0},{name:"isModule",type:"boolean",optional:!0,description:"True, if this script is ES6 module.",experimental:!0},{name:"length",type:"integer",optional:!0,description:"This script length.",experimental:!0},{name:"stackTrace",$ref:"Runtime.StackTrace",optional:!0,description:"JavaScript top stack frame of where the script parsed event was triggered if available.",experimental:!0}],description:"Fired when virtual machine parses script. This event is also fired for all known and uncollected scripts upon enabling debugger."},{name:"scriptFailedToParse",parameters:[{name:"scriptId",$ref:"Runtime.ScriptId",description:"Identifier of the script parsed."},{name:"url",type:"string",description:"URL or name of the script parsed (if any)."},{name:"startLine",type:"integer",description:"Line offset of the script within the resource with given URL (for script tags)."},{name:"startColumn",type:"integer",description:"Column offset of the script within the resource with given URL."},{name:"endLine",type:"integer",description:"Last line of the script."},{name:"endColumn",type:"integer",description:"Length of the last line of the script."},{name:"executionContextId",$ref:"Runtime.ExecutionContextId",description:"Specifies script creation context."},{name:"hash",type:"string",description:"Content hash of the script."},{name:"executionContextAuxData",type:"object",optional:!0,description:"Embedder-specific auxiliary data."},{name:"sourceMapURL",type:"string",optional:!0,description:"URL of source map associated with script (if any)."},{name:"hasSourceURL",type:"boolean",optional:!0,description:"True, if this script has sourceURL.",experimental:!0},{name:"isModule",type:"boolean",optional:!0,description:"True, if this script is ES6 module.",experimental:!0},{name:"length",type:"integer",optional:!0,description:"This script length.",experimental:!0},{name:"stackTrace",$ref:"Runtime.StackTrace",optional:!0,description:"JavaScript top stack frame of where the script parsed event was triggered if available.",experimental:!0}],description:"Fired when virtual machine fails to parse the script."},{name:"breakpointResolved",parameters:[{name:"breakpointId",$ref:"BreakpointId",description:"Breakpoint unique identifier."},{name:"location",$ref:"Location",description:"Actual breakpoint location."}],description:"Fired when breakpoint is resolved to an actual script and location."},{name:"paused",parameters:[{name:"callFrames",type:"array",items:{$ref:"CallFrame"},description:"Call stack the virtual machine stopped on."},{name:"reason",type:"string",enum:["XHR","DOM","EventListener","exception","assert","debugCommand","promiseRejection","OOM","other","ambiguous"],description:"Pause reason."},{name:"data",type:"object",optional:!0,description:"Object containing break-specific auxiliary properties."},{name:"hitBreakpoints",type:"array",optional:!0,items:{type:"string"},description:"Hit breakpoints IDs"},{name:"asyncStackTrace",$ref:"Runtime.StackTrace",optional:!0,description:"Async stack trace, if any."}],description:"Fired when the virtual machine stopped on breakpoint or exception or any other stop criteria."},{name:"resumed",description:"Fired when the virtual machine resumed execution."}]},{domain:"Console",description:"This domain is deprecated - use Runtime or Log instead.",dependencies:["Runtime"],deprecated:!0,types:[{id:"ConsoleMessage",type:"object",description:"Console message.",properties:[{name:"source",type:"string",enum:["xml","javascript","network","console-api","storage","appcache","rendering","security","other","deprecation","worker"],description:"Message source."},{name:"level",type:"string",enum:["log","warning","error","debug","info"],description:"Message severity."},{name:"text",type:"string",description:"Message text."},{name:"url",type:"string",optional:!0,description:"URL of the message origin."},{name:"line",type:"integer",optional:!0,description:"Line number in the resource that generated this message (1-based)."},{name:"column",type:"integer",optional:!0,description:"Column number in the resource that generated this message (1-based)."}]}],commands:[{name:"enable",description:"Enables console domain, sends the messages collected so far to the client by means of the <code>messageAdded</code> notification."},{name:"disable",description:"Disables console domain, prevents further console messages from being reported to the client."},{name:"clearMessages",description:"Does nothing."}],events:[{name:"messageAdded",parameters:[{name:"message",$ref:"ConsoleMessage",description:"Console message that has been added."}],description:"Issued when new console message is added."}]},{domain:"Profiler",dependencies:["Runtime","Debugger"],types:[{id:"ProfileNode",type:"object",description:"Profile node. Holds callsite information, execution statistics and child nodes.",properties:[{name:"id",type:"integer",description:"Unique id of the node."},{name:"callFrame",$ref:"Runtime.CallFrame",description:"Function location."},{name:"hitCount",type:"integer",optional:!0,experimental:!0,description:"Number of samples where this node was on top of the call stack."},{name:"children",type:"array",items:{type:"integer"},optional:!0,description:"Child node ids."},{name:"deoptReason",type:"string",optional:!0,description:"The reason of being not optimized. The function may be deoptimized or marked as don't optimize."},{name:"positionTicks",type:"array",items:{$ref:"PositionTickInfo"},optional:!0,experimental:!0,description:"An array of source position ticks."}]},{id:"Profile",type:"object",description:"Profile.",properties:[{name:"nodes",type:"array",items:{$ref:"ProfileNode"},description:"The list of profile nodes. First item is the root node."},{name:"startTime",type:"number",description:"Profiling start timestamp in microseconds."},{name:"endTime",type:"number",description:"Profiling end timestamp in microseconds."},{name:"samples",optional:!0,type:"array",items:{type:"integer"},description:"Ids of samples top nodes."},{name:"timeDeltas",optional:!0,type:"array",items:{type:"integer"},description:"Time intervals between adjacent samples in microseconds. The first delta is relative to the profile startTime."}]},{id:"PositionTickInfo",type:"object",experimental:!0,description:"Specifies a number of samples attributed to a certain source position.",properties:[{name:"line",type:"integer",description:"Source line number (1-based)."},{name:"ticks",type:"integer",description:"Number of samples attributed to the source line."}]},{id:"CoverageRange",type:"object",description:"Coverage data for a source range.",properties:[{name:"startOffset",type:"integer",description:"JavaScript script source offset for the range start."},{name:"endOffset",type:"integer",description:"JavaScript script source offset for the range end."},{name:"count",type:"integer",description:"Collected execution count of the source range."}],experimental:!0},{id:"FunctionCoverage",type:"object",description:"Coverage data for a JavaScript function.",properties:[{name:"functionName",type:"string",description:"JavaScript function name."},{name:"ranges",type:"array",items:{$ref:"CoverageRange"},description:"Source ranges inside the function with coverage data."}],experimental:!0},{id:"ScriptCoverage",type:"object",description:"Coverage data for a JavaScript script.",properties:[{name:"scriptId",$ref:"Runtime.ScriptId",description:"JavaScript script id."},{name:"url",type:"string",description:"JavaScript script name or url."},{name:"functions",type:"array",items:{$ref:"FunctionCoverage"},description:"Functions contained in the script that has coverage data."}],experimental:!0}],commands:[{name:"enable"},{name:"disable"},{name:"setSamplingInterval",parameters:[{name:"interval",type:"integer",description:"New sampling interval in microseconds."}],description:"Changes CPU profiler sampling interval. Must be called before CPU profiles recording started."},{name:"start"},{name:"stop",returns:[{name:"profile",$ref:"Profile",description:"Recorded profile."}]},{name:"startPreciseCoverage",parameters:[{name:"callCount",type:"boolean",optional:!0,description:"Collect accurate call counts beyond simple 'covered' or 'not covered'."}],description:"Enable precise code coverage. Coverage data for JavaScript executed before enabling precise code coverage may be incomplete. Enabling prevents running optimized code and resets execution counters.",experimental:!0},{name:"stopPreciseCoverage",description:"Disable precise code coverage. Disabling releases unnecessary execution count records and allows executing optimized code.",experimental:!0},{name:"takePreciseCoverage",returns:[{name:"result",type:"array",items:{$ref:"ScriptCoverage"},description:"Coverage data for the current isolate."}],description:"Collect coverage data for the current isolate, and resets execution counters. Precise code coverage needs to have started.",experimental:!0},{name:"getBestEffortCoverage",returns:[{name:"result",type:"array",items:{$ref:"ScriptCoverage"},description:"Coverage data for the current isolate."}],description:"Collect coverage data for the current isolate. The coverage data may be incomplete due to garbage collection.",experimental:!0}],events:[{name:"consoleProfileStarted",parameters:[{name:"id",type:"string"},{name:"location",$ref:"Debugger.Location",description:"Location of console.profile()."},{name:"title",type:"string",optional:!0,description:"Profile title passed as an argument to console.profile()."}],description:"Sent when new profile recording is started using console.profile() call."},{name:"consoleProfileFinished",parameters:[{name:"id",type:"string"},{name:"location",$ref:"Debugger.Location",description:"Location of console.profileEnd()."},{name:"profile",$ref:"Profile"},{name:"title",type:"string",optional:!0,description:"Profile title passed as an argument to console.profile()."}]}]},{domain:"HeapProfiler",dependencies:["Runtime"],experimental:!0,types:[{id:"HeapSnapshotObjectId",type:"string",description:"Heap snapshot object id."},{id:"SamplingHeapProfileNode",type:"object",description:"Sampling Heap Profile node. Holds callsite information, allocation statistics and child nodes.",properties:[{name:"callFrame",$ref:"Runtime.CallFrame",description:"Function location."},{name:"selfSize",type:"number",description:"Allocations size in bytes for the node excluding children."},{name:"children",type:"array",items:{$ref:"SamplingHeapProfileNode"},description:"Child nodes."}]},{id:"SamplingHeapProfile",type:"object",description:"Profile.",properties:[{name:"head",$ref:"SamplingHeapProfileNode"}]}],commands:[{name:"enable"},{name:"disable"},{name:"startTrackingHeapObjects",parameters:[{name:"trackAllocations",type:"boolean",optional:!0}]},{name:"stopTrackingHeapObjects",parameters:[{name:"reportProgress",type:"boolean",optional:!0,description:"If true 'reportHeapSnapshotProgress' events will be generated while snapshot is being taken when the tracking is stopped."}]},{name:"takeHeapSnapshot",parameters:[{name:"reportProgress",type:"boolean",optional:!0,description:"If true 'reportHeapSnapshotProgress' events will be generated while snapshot is being taken."}]},{name:"collectGarbage"},{name:"getObjectByHeapObjectId",parameters:[{name:"objectId",$ref:"HeapSnapshotObjectId"},{name:"objectGroup",type:"string",optional:!0,description:"Symbolic group name that can be used to release multiple objects."}],returns:[{name:"result",$ref:"Runtime.RemoteObject",description:"Evaluation result."}]},{name:"addInspectedHeapObject",parameters:[{name:"heapObjectId",$ref:"HeapSnapshotObjectId",description:"Heap snapshot object id to be accessible by means of $x command line API."}],description:"Enables console to refer to the node with given id via $x (see Command Line API for more details $x functions)."},{name:"getHeapObjectId",parameters:[{name:"objectId",$ref:"Runtime.RemoteObjectId",description:"Identifier of the object to get heap object id for."}],returns:[{name:"heapSnapshotObjectId",$ref:"HeapSnapshotObjectId",description:"Id of the heap snapshot object corresponding to the passed remote object id."}]},{name:"startSampling",parameters:[{name:"samplingInterval",type:"number",optional:!0,description:"Average sample interval in bytes. Poisson distribution is used for the intervals. The default value is 32768 bytes."}]},{name:"stopSampling",returns:[{name:"profile",$ref:"SamplingHeapProfile",description:"Recorded sampling heap profile."}]}],events:[{name:"addHeapSnapshotChunk",parameters:[{name:"chunk",type:"string"}]},{name:"resetProfiles"},{name:"reportHeapSnapshotProgress",parameters:[{name:"done",type:"integer"},{name:"total",type:"integer"},{name:"finished",type:"boolean",optional:!0}]},{name:"lastSeenObjectId",description:"If heap objects tracking has been started then backend regularly sends a current value for last seen object id and corresponding timestamp. If the were changes in the heap since last event then one or more heapStatsUpdate events will be sent before a new lastSeenObjectId event.",parameters:[{name:"lastSeenObjectId",type:"integer"},{name:"timestamp",type:"number"}]},{name:"heapStatsUpdate",description:"If heap objects tracking has been started then backend may send update for one or more fragments",parameters:[{name:"statsUpdate",type:"array",items:{type:"integer"},description:"An array of triplets. Each triplet describes a fragment. 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diff --git a/lib/opal/cli_runners/node_modules/chrome-remote-interface/index.js b/lib/opal/cli_runners/node_modules/chrome-remote-interface/index.js
new file mode 100644
index 00000000..43fde578
--- /dev/null
+++ b/lib/opal/cli_runners/node_modules/chrome-remote-interface/index.js
@@ -0,0 +1,39 @@
+'use strict';
+
+const EventEmitter = require('events');
+
+const devtools = require('./lib/devtools');
+const Chrome = require('./lib/chrome');
+
+module.exports = function (options, callback) {
+    if (typeof options === 'function') {
+        callback = options;
+        options = undefined;
+    }
+    const notifier = new EventEmitter();
+    if (typeof callback === 'function') {
+        // allow to register the error callback later
+        process.nextTick(function () {
+            new Chrome(options, notifier);
+        });
+        return notifier.once('connect', callback);
+    } else {
+        return new Promise(function (fulfill, reject) {
+            notifier.once('connect', fulfill);
+            notifier.once('error', reject);
+            new Chrome(options, notifier);
+        });
+    }
+};
+
+// for backward compatibility
+module.exports.listTabs = devtools.List;
+module.exports.spawnTab = devtools.New;
+module.exports.closeTab = devtools.Close;
+
+module.exports.Protocol = devtools.Protocol;
+module.exports.List = devtools.List;
+module.exports.New = devtools.New;
+module.exports.Activate = devtools.Activate;
+module.exports.Close = devtools.Close;
+module.exports.Version = devtools.Version;
diff --git a/lib/opal/cli_runners/node_modules/chrome-remote-interface/lib/api.js b/lib/opal/cli_runners/node_modules/chrome-remote-interface/lib/api.js
new file mode 100644
index 00000000..63fd1aa6
--- /dev/null
+++ b/lib/opal/cli_runners/node_modules/chrome-remote-interface/lib/api.js
@@ -0,0 +1,84 @@
+'use strict';
+
+function arrayToObject(parameters) {
+    const keyValue = {};
+    parameters.forEach(function (parameter) {
+        const name = parameter.name;
+        delete parameter.name;
+        keyValue[name] = parameter;
+    });
+    return keyValue;
+}
+
+function decorate(to, category, object) {
+    to.category = category;
+    Object.keys(object).forEach(function (field) {
+        // skip the 'name' field as it is part of the function prototype
+        if (field === 'name') {
+            return;
+        }
+        // commands and events have parameters whereas types have properties
+        if (category === 'type' && field === 'properties' ||
+            field === 'parameters') {
+            to[field] = arrayToObject(object[field]);
+        } else {
+            to[field] = object[field];
+        }
+    });
+}
+
+function addCommand(chrome, domainName, command) {
+    const handler = function (params, callback) {
+        return chrome.send(domainName + '.' + command.name, params, callback);
+    };
+    decorate(handler, 'command', command);
+    chrome[domainName][command.name] = handler;
+}
+
+function addEvent(chrome, domainName, event) {
+    const eventName = domainName + '.' + event.name;
+    const handler = function (handler) {
+        if (typeof handler === 'function') {
+            chrome.on(eventName, handler);
+        } else {
+            return new Promise(function (fulfill, reject) {
+                chrome.once(eventName, fulfill);
+            });
+        }
+    };
+    decorate(handler, 'event', event);
+    chrome[domainName][event.name] = handler;
+}
+
+function addType(chrome, domainName, type) {
+    const help = {};
+    decorate(help, 'type', type);
+    chrome[domainName][type.id] = help;
+}
+
+function prepare(protocol) {
+    const chrome = this;
+    return new Promise(function (fulfill, reject) {
+        // assign the protocol and generate the shorthands
+        chrome.protocol = protocol;
+        protocol.domains.forEach(function (domain) {
+            const domainName = domain.domain;
+            chrome[domainName] = {};
+            // add commands
+            (domain.commands || []).forEach(function (command) {
+                addCommand(chrome, domainName, command);
+            });
+            // add events
+            (domain.events || []).forEach(function (event) {
+                addEvent(chrome, domainName, event);
+            });
+            // add types
+            (domain.types || []).forEach(function (type) {
+                addType(chrome, domainName, type);
+            });
+        });
+        fulfill();
+    });
+}
+
+module.exports.prepare = prepare;
diff --git a/lib/opal/cli_runners/node_modules/chrome-remote-interface/lib/chrome.js b/lib/opal/cli_runners/node_modules/chrome-remote-interface/lib/chrome.js
new file mode 100644
index 00000000..dcfd3acc
--- /dev/null
+++ b/lib/opal/cli_runners/node_modules/chrome-remote-interface/lib/chrome.js
@@ -0,0 +1,289 @@
+'use strict';
+
+const EventEmitter = require('events');
+const util = require('util');
+
+const WebSocket = require('ws');
+
+const api = require('./api');
+const defaults = require('./defaults');
+const devtools = require('./devtools');
+
+class ProtocolError extends Error {
+    constructor(response) {
+        super(response.message);
+        Object.assign(this, response);
+    }
+}
+
+class Chrome extends EventEmitter {
+    constructor(options, notifier) {
+        super();
+        // options
+        const defaultTarget = function (targets) {
+            // prefer type = 'page' inspectabe targets as they represents
+            // browser tabs (fall back to the first instectable target
+            // otherwise)
+            let backup;
+            let target = targets.find((target) => {
+                if (target.webSocketDebuggerUrl) {
+                    backup = backup || target;
+                    return target.type === 'page';
+                } else {
+                    return false;
+                }
+            });
+            target = target || backup;
+            if (target) {
+                return target;
+            } else {
+                throw new Error('No inspectable targets');
+            }
+        };
+        options = options || {};
+        this.host = options.host || defaults.HOST;
+        this.port = options.port || defaults.PORT;
+        this.secure = !!(options.secure);
+        this.protocol = options.protocol;
+        this.remote = !!(options.remote);
+        this.target = options.target ||
+            /* backward compatibility */ options.tab || options.chooseTab
+            || defaultTarget;
+        // locals
+        EventEmitter.call(this);
+        this._notifier = notifier;
+        this._callbacks = {};
+        this._nextCommandId = 1;
+        // operations
+        start.call(this);
+    }
+}
+
+// avoid misinterpreting protocol's members as custom util.inspect functions
+Chrome.prototype.inspect = function (depth, options) {
+    options.customInspect = false;
+    return util.inspect(this, options);
+};
+
+Chrome.prototype.send = function (method, params, callback) {
+    const chrome = this;
+    if (typeof params === 'function') {
+        callback = params;
+        params = undefined;
+    }
+    // return a promise when a callback is not provided
+    if (typeof callback === 'function') {
+        enqueueCommand.call(chrome, method, params, callback);
+    } else {
+        return new Promise(function (fulfill, reject) {
+            enqueueCommand.call(chrome, method, params, function (error, response) {
+                if (error) {
+                    reject(new ProtocolError(response));
+                } else {
+                    fulfill(response);
+                }
+            });
+        });
+    }
+};
+
+Chrome.prototype.close = function (callback) {
+    const chrome = this;
+    function closeWebSocket(callback) {
+        // don't notify on user-initiated shutdown ('disconnect' event)
+        chrome._ws.removeAllListeners('close');
+        chrome._ws.close();
+        chrome._ws.once('close', function () {
+            chrome._ws.removeAllListeners();
+            callback();
+        });
+    }
+    if (typeof callback === 'function') {
+        closeWebSocket(callback);
+    } else {
+        return new Promise(function (fulfill, reject) {
+            closeWebSocket(fulfill);
+        });
+    }
+};
+
+// send a command to the remote endpoint and register a callback for the reply
+function enqueueCommand(method, params, callback) {
+    const chrome = this;
+    const id = chrome._nextCommandId++;
+    const message = {'id': id, 'method': method, 'params': params || {}};
+    chrome._ws.send(JSON.stringify(message));
+    chrome._callbacks[id] = callback;
+}
+
+// initiate the connection process
+function start() {
+    const chrome = this;
+    const options = {'host': chrome.host, 'port': chrome.port, 'secure': chrome.secure};
+    Promise.all([
+        // fetch the protocol and prepare the API
+        fetchProtocol.call(chrome, options).then(api.prepare.bind(chrome)),
+        // in the meanwhile fetch the WebSocket debugger URL
+        fetchDebuggerURL.call(chrome, options)
+    ]).then(function (values) {
+        // finally connect to the WebSocket
+        const url = values[1];
+        return connectToWebSocket.call(chrome, url);
+    }).then(function () {
+        // since the handler is executed synchronously, the emit() must be
+        // performed in the next tick so that uncaught errors in the client code
+        // are not intercepted by the Promise mechanism and therefore reported
+        // via the 'error' event
+        process.nextTick(function () {
+            chrome._notifier.emit('connect', chrome);
+        });
+    }).catch(function (err) {
+        chrome._notifier.emit('error', err);
+    });
+}
+
+// fetch the protocol according to 'protocol' and 'remote'
+function fetchProtocol(options) {
+    const chrome = this;
+    return new Promise(function (fulfill, reject) {
+        // if a protocol has been provided then use it
+        if (chrome.protocol) {
+            fulfill(chrome.protocol);
+        }
+        // otherwise user either the local or the remote version
+        else {
+            options.remote = chrome.remote;
+            devtools.Protocol(options).then(function (protocol) {
+                fulfill(protocol.descriptor);
+            }).catch(reject);
+        }
+    });
+}
+
+// extract the debugger URL from a target-like object
+function fetchFromObject(fulfill, reject, target) {
+    const url = (target || {}).webSocketDebuggerUrl;
+    if (url) {
+        fulfill(url);
+    } else {
+        const targetStr = JSON.stringify(target, null, 4);
+        const err = new Error('Invalid target ' + targetStr);
+        reject(err);
+    }
+}
+
+// fetch the WebSocket URL according to 'target'
+function fetchDebuggerURL(options) {
+    const chrome = this;
+    return new Promise(function (fulfill, reject) {
+        // note: when DevTools are open or another WebSocket is connected to a
+        // given target the 'webSocketDebuggerUrl' field is not available
+        let userTarget = chrome.target;
+        switch (typeof userTarget) {
+        case 'string':
+            // use default host and port if omitted (and a relative URL is specified)
+            if (userTarget.startsWith('/')) {
+                const prefix = 'ws://' + chrome.host + ':' + chrome.port;
+                userTarget = prefix + userTarget;
+            }
+            // a WebSocket URL is specified by the user (e.g., node-inspector)
+            if (userTarget.match(/^wss?:/i)) {
+                fulfill(userTarget);
+            }
+            // a target id is specified by the user
+            else {
+                devtools.List(options).then(function (targets) {
+                    return targets.find(function (target) {
+                        return target.id === userTarget;
+                    });
+                }).then(function (target) {
+                    fetchFromObject(fulfill, reject, target);
+                }).catch(reject);
+            }
+            break;
+        case 'object':
+            // a target object is specified by the user
+            fetchFromObject(fulfill, reject, userTarget);
+            break;
+        case 'function':
+            // a function is specified by the user
+            devtools.List(options).then(function (targets) {
+                const result = userTarget(targets);
+                if (typeof result === 'number') {
+                    return targets[result];
+                } else {
+                    return result;
+                }
+            }).then(function (target) {
+                fetchFromObject(fulfill, reject, target);
+            }).catch(reject);
+            break;
+        default:
+            reject(new Error('Invalid target argument "' + chrome.target + '"'));
+        }
+    });
+}
+
+// establish the WebSocket connection and start processing user commands
+function connectToWebSocket(url) {
+    const chrome = this;
+    return new Promise(function (fulfill, reject) {
+        // create the WebSocket
+        try {
+            if (chrome.secure) {
+                url = url.replace(/^ws:/i, 'wss:');
+            }
+            chrome._ws = new WebSocket(url);
+        } catch (err) {
+            // handles bad URLs
+            reject(err);
+            return;
+        }
+        // set up event handlers
+        chrome._ws.on('open', function () {
+            fulfill();
+        });
+        chrome._ws.on('message', function (data) {
+            const message = JSON.parse(data);
+            handleMessage.call(chrome, message);
+        });
+        chrome._ws.on('close', function (code) {
+            chrome.emit('disconnect');
+        });
+        chrome._ws.on('error', function (err) {
+            reject(err);
+        });
+    });
+}
+
+// handle the messages read from the WebSocket
+function handleMessage(message) {
+    const chrome = this;
+    // command response
+    if (message.id) {
+        const callback = chrome._callbacks[message.id];
+        if (!callback) {
+            return;
+        }
+        // interpret the lack of both 'error' and 'result' as success
+        // (this may happen with node-inspector)
+        if (message.error) {
+            callback(true, message.error);
+        } else {
+            callback(false, message.result || {});
+        }
+        // unregister command response callback
+        delete chrome._callbacks[message.id];
+        // notify when there are no more pending commands
+        if (Object.keys(chrome._callbacks).length === 0) {
+            chrome.emit('ready');
+        }
+    }
+    // event
+    else if (message.method) {
+        chrome.emit('event', message);
+        chrome.emit(message.method, message.params);
+    }
+}
+
+module.exports = Chrome;
diff --git a/lib/opal/cli_runners/node_modules/chrome-remote-interface/lib/defaults.js b/lib/opal/cli_runners/node_modules/chrome-remote-interface/lib/defaults.js
new file mode 100644
index 00000000..18778f0d
--- /dev/null
+++ b/lib/opal/cli_runners/node_modules/chrome-remote-interface/lib/defaults.js
@@ -0,0 +1,4 @@
+'use strict';
+
+module.exports.HOST = 'localhost';
+module.exports.PORT = 9222;
diff --git a/lib/opal/cli_runners/node_modules/chrome-remote-interface/lib/devtools.js b/lib/opal/cli_runners/node_modules/chrome-remote-interface/lib/devtools.js
new file mode 100644
index 00000000..79cc582e
--- /dev/null
+++ b/lib/opal/cli_runners/node_modules/chrome-remote-interface/lib/devtools.js
@@ -0,0 +1,245 @@
+'use strict';
+
+const http = require('http');
+const https = require('https');
+
+const defaults = require('./defaults');
+const externalRequest = require('./external-request');
+
+// callback(err, protocol)
+module.exports.Protocol = promisesWrapper(function (options, callback) {
+    // if the local protocol is requested
+    if (!options.remote) {
+        const localDescriptor = require('./protocol.json');
+        callback(null, {
+            'remote': false,
+            'descriptor': localDescriptor
+        });
+        return;
+    }
+    // try to fecth the browser version information and the protocol (remotely)
+    module.exports.Version(options, function (err, info) {
+        if (err) {
+            callback(err);
+            return;
+        }
+        // fetch the reported browser info (Node.js returns an array)
+        const browser = (info[0] || info).Browser;
+        // use the proper protocol fetcher
+        let fetcher;
+        if (browser.match(/^(Headless)?Chrome\//)) {
+            // https://bugs.chromium.org/p/chromium/issues/detail?id=538300#c10
+            const firstJsonProtocolVersion = '60.0.3097.0';
+            const firstJsonProtocolBuild = explodeChromeVersion(firstJsonProtocolVersion)[2];
+            const chromeBuild = explodeChromeVersion(info.Browser.split('/')[1])[2];
+            if (chromeBuild < firstJsonProtocolBuild) {
+                fetcher = fetchFromChromeRepo;
+            } else {
+                fetcher = fetchFromHttpEndpoint;
+            }
+        } else if (browser.match(/^Microsoft Edge /)) {
+            fetcher = fetchFromHttpEndpoint;
+        } else if (browser.match(/^node.js\//)) {
+            fetcher = fetchFromHttpEndpoint;
+        } else {
+            callback(new Error('Unknown implementation'));
+            return;
+        }
+        fetcher(options, info, function (err, descriptor) {
+            if (err) {
+                callback(err);
+                return;
+            }
+            // use the remotely fetched descriptor
+            callback(null, {
+                'remote': true,
+                'descriptor': descriptor
+            });
+        });
+    });
+});
+
+module.exports.List = promisesWrapper(function (options, callback) {
+    options.path = '/json/list';
+    devToolsInterface(options, function (err, tabs) {
+        if (err) {
+            callback(err);
+        } else {
+            callback(null, JSON.parse(tabs));
+        }
+    });
+});
+
+module.exports.New = promisesWrapper(function (options, callback) {
+    options.path = '/json/new';
+    if (Object.prototype.hasOwnProperty.call(options, 'url')) {
+        options.path += '?' + options.url;
+    }
+    devToolsInterface(options, function (err, tab) {
+        if (err) {
+            callback(err);
+        } else {
+            callback(null, JSON.parse(tab));
+        }
+    });
+});
+
+module.exports.Activate = promisesWrapper(function (options, callback) {
+    options.path = '/json/activate/' + options.id;
+    devToolsInterface(options, function (err) {
+        if (err) {
+            callback(err);
+        } else {
+            callback(null);
+        }
+    });
+});
+
+module.exports.Close = promisesWrapper(function (options, callback) {
+    options.path = '/json/close/' + options.id;
+    devToolsInterface(options, function (err) {
+        if (err) {
+            callback(err);
+        } else {
+            callback(null);
+        }
+    });
+});
+
+module.exports.Version = promisesWrapper(function (options, callback) {
+    options.path = '/json/version';
+    devToolsInterface(options, function (err, versionInfo) {
+        if (err) {
+            callback(err);
+        } else {
+            callback(null, JSON.parse(versionInfo));
+        }
+    });
+});
+
+// options.path must be specified; callback(err, data)
+function devToolsInterface(options, callback) {
+    options.host = options.host || defaults.HOST;
+    options.port = options.port || defaults.PORT;
+    options.secure = !!(options.secure);
+    externalRequest(options.secure ? https : http, options, callback);
+}
+
+// wrapper that allows to return a promise if the callback is omitted, it works
+// for DevTools methods
+function promisesWrapper(func) {
+    return function (options, callback) {
+        // options is an optional argument
+        if (typeof options === 'function') {
+            callback = options;
+            options = undefined;
+        }
+        options = options || {};
+        // just call the function otherwise wrap a promise around its execution
+        if (typeof callback === 'function') {
+            func(options, callback);
+        } else {
+            return new Promise(function (fulfill, reject) {
+                func(options, function (err, result) {
+                    if (err) {
+                        reject(err);
+                    } else {
+                        fulfill(result);
+                    }
+                });
+            });
+        }
+    };
+}
+
+function explodeChromeVersion(v) {
+    return v.split('.').map(function (x) {
+        return parseInt(x);
+    });
+}
+
+// callback(err, descriptor)
+// XXX this function needs a proper refactor but the inconsistency of the
+// fetching process makes it useless for now
+function fetchFromChromeRepo(options, info, callback) {
+    // attempt to fetch the protocol directly from the Chromium repository
+    // according to the current version
+    //
+    // Thanks to Paul Irish.
+    // (see https://github.com/cyrus-and/chrome-remote-interface/issues/10#issuecomment-146032907)
+    const webKitVersion = info['WebKit-Version'];
+    const v8Version = info['V8-Version'];
+    const match = webKitVersion.match(/\s\(@(\b[0-9a-f]{5,40}\b)/);
+    const hash = match[1];
+    const fromChromiumDotOrg = (hash <= 202666);
+    let urls;
+    if (fromChromiumDotOrg) {
+        urls = [`https://src.chromium.org/blink/trunk/Source/devtools/protocol.json?p=${hash}`];
+    } else {
+        const lastBeforeSplitChromeVersion = '53.0.2758.1'; // before the split (https://crbug.com/580337)
+        const lastBeforeV8ChromeVersion = '55.0.2854.3'; // before using the JSON from the V8 repo
+        const chromeVersion = explodeChromeVersion(info.Browser.split('/')[1]);
+        // according to https://www.chromium.org/developers/version-numbers (patch not meaningful)
+        const beforeSplit = (chromeVersion[2] <= explodeChromeVersion(lastBeforeSplitChromeVersion)[2]);
+        const beforeFromV8 = (chromeVersion[2] <= explodeChromeVersion(lastBeforeV8ChromeVersion)[2]);
+        if (beforeSplit) {
+            urls = [`https://chromium.googlesource.com/chromium/src/+/${hash}/third_party/WebKit/Source/devtools/protocol.json?format=TEXT`];
+        } else if (beforeFromV8) {
+            urls = [`https://chromium.googlesource.com/chromium/src/+/${hash}/third_party/WebKit/Source/core/inspector/browser_protocol.json?format=TEXT`,
+                    `https://chromium.googlesource.com/chromium/src/+/${hash}/third_party/WebKit/Source/platform/v8_inspector/js_protocol.json?format=TEXT`];
+        } else if (v8Version) {
+            urls = [`https://chromium.googlesource.com/chromium/src/+/${hash}/third_party/WebKit/Source/core/inspector/browser_protocol.json?format=TEXT`,
+                    `https://chromium.googlesource.com/v8/v8/+/${v8Version}/src/inspector/js_protocol.json?format=TEXT`];
+        } else {
+            console.error('Warning: the protocol might be outdated, see: https://groups.google.com/d/topic/chrome-debugging-protocol/HjyOKainKus/discussion');
+            // releases which do not provide a V8 version get an old version of the V8 protocol
+            urls = [`https://chromium.googlesource.com/chromium/src/+/${hash}/third_party/WebKit/Source/core/inspector/browser_protocol.json?format=TEXT`,
+                    `https://chromium.googlesource.com/chromium/src/+/${lastBeforeV8ChromeVersion}/third_party/WebKit/Source/platform/v8_inspector/js_protocol.json?format=TEXT`];
+        }
+    }
+    const descriptors = [];
+    urls.forEach(function (url) {
+        externalRequest(https, url, function (err, data) {
+            let descriptor;
+            if (!err) {
+                try {
+                    // the file is served base64 encoded from googlesource.com
+                    if (!fromChromiumDotOrg) {
+                        data = new Buffer(data, 'base64').toString();
+                    }
+                    descriptor = JSON.parse(data);
+                } catch (_) {
+                    // abort later
+                }
+            }
+            descriptors.push(descriptor);
+            if (descriptors.length === urls.length) {
+                // all must be defined
+                if (descriptors.indexOf(undefined) !== -1) {
+                    callback(new Error('Cannot fetch from Chromium repo'));
+                    return;
+                }
+                // merge the domains
+                descriptors.forEach(function (descriptor, i) {
+                    if (i === 0) {
+                        return;
+                    }
+                    Array.prototype.push.apply(descriptors[0].domains, descriptor.domains);
+                });
+                callback(null, descriptors[0]);
+            }
+        });
+    });
+}
+
+// callback(err, descriptor)
+function fetchFromHttpEndpoint(options, info, callback) {
+    options.path = '/json/protocol';
+    devToolsInterface(options, function (err, descriptor) {
+        if (err) {
+            callback(err);
+        } else {
+            callback(null, JSON.parse(descriptor));
+        }
+    });
+}
diff --git a/lib/opal/cli_runners/node_modules/chrome-remote-interface/lib/external-request.js b/lib/opal/cli_runners/node_modules/chrome-remote-interface/lib/external-request.js
new file mode 100644
index 00000000..f60ac666
--- /dev/null
+++ b/lib/opal/cli_runners/node_modules/chrome-remote-interface/lib/external-request.js
@@ -0,0 +1,23 @@
+'use strict';
+
+// callback(err, data)
+function externalRequest(transport, options, callback) {
+    const request = transport.get(options, function (response) {
+        let data = '';
+        response.on('data', function (chunk) {
+            data += chunk;
+        });
+        response.on('end', function () {
+            if (response.statusCode === 200) {
+                callback(null, data);
+            } else {
+                callback(new Error(data));
+            }
+        });
+    });
+    request.on('error', function (err) {
+        callback(err);
+    });
+}
+
+module.exports = externalRequest;
diff --git a/lib/opal/cli_runners/node_modules/chrome-remote-interface/lib/protocol.json b/lib/opal/cli_runners/node_modules/chrome-remote-interface/lib/protocol.json
new file mode 100644
index 00000000..3228df9b
--- /dev/null
+++ b/lib/opal/cli_runners/node_modules/chrome-remote-interface/lib/protocol.json
@@ -0,0 +1,13303 @@
+{
+    "version": {
+        "major": "1",
+        "minor": "2"
+    },
+    "domains": [
+        {
+            "domain": "Inspector",
+            "experimental": true,
+            "types": [],
+            "commands": [
+                {
+                    "name": "enable",
+                    "description": "Enables inspector domain notifications."
+                },
+                {
+                    "name": "disable",
+                    "description": "Disables inspector domain notifications."
+                }
+            ],
+            "events": [
+                {
+                    "name": "detached",
+                    "description": "Fired when remote debugging connection is about to be terminated. Contains detach reason.",
+                    "parameters": [
+                        {
+                            "name": "reason",
+                            "type": "string",
+                            "description": "The reason why connection has been terminated."
+                        }
+                    ]
+                },
+                {
+                    "name": "targetCrashed",
+                    "description": "Fired when debugging target has crashed"
+                }
+            ]
+        },
+        {
+            "domain": "Memory",
+            "experimental": true,
+            "types": [
+                {
+                    "id": "PressureLevel",
+                    "type": "string",
+                    "enum": [
+                        "moderate",
+                        "critical"
+                    ],
+                    "description": "Memory pressure level."
+                }
+            ],
+            "commands": [
+                {
+                    "name": "getDOMCounters",
+                    "returns": [
+                        {
+                            "name": "documents",
+                            "type": "integer"
+                        },
+                        {
+                            "name": "nodes",
+                            "type": "integer"
+                        },
+                        {
+                            "name": "jsEventListeners",
+                            "type": "integer"
+                        }
+                    ]
+                },
+                {
+                    "name": "setPressureNotificationsSuppressed",
+                    "description": "Enable/disable suppressing memory pressure notifications in all processes.",
+                    "parameters": [
+                        {
+                            "name": "suppressed",
+                            "type": "boolean",
+                            "description": "If true, memory pressure notifications will be suppressed."
+                        }
+                    ]
+                },
+                {
+                    "name": "simulatePressureNotification",
+                    "description": "Simulate a memory pressure notification in all processes.",
+                    "parameters": [
+                        {
+                            "name": "level",
+                            "$ref": "PressureLevel",
+                            "description": "Memory pressure level of the notification."
+                        }
+                    ]
+                }
+            ]
+        },
+        {
+            "domain": "Page",
+            "description": "Actions and events related to the inspected page belong to the page domain.",
+            "dependencies": [
+                "Debugger",
+                "DOM"
+            ],
+            "types": [
+                {
+                    "id": "ResourceType",
+                    "type": "string",
+                    "enum": [
+                        "Document",
+                        "Stylesheet",
+                        "Image",
+                        "Media",
+                        "Font",
+                        "Script",
+                        "TextTrack",
+                        "XHR",
+                        "Fetch",
+                        "EventSource",
+                        "WebSocket",
+                        "Manifest",
+                        "Other"
+                    ],
+                    "description": "Resource type as it was perceived by the rendering engine."
+                },
+                {
+                    "id": "FrameId",
+                    "type": "string",
+                    "description": "Unique frame identifier."
+                },
+                {
+                    "id": "Frame",
+                    "type": "object",
+                    "description": "Information about the Frame on the page.",
+                    "properties": [
+                        {
+                            "name": "id",
+                            "type": "string",
+                            "description": "Frame unique identifier."
+                        },
+                        {
+                            "name": "parentId",
+                            "type": "string",
+                            "optional": true,
+                            "description": "Parent frame identifier."
+                        },
+                        {
+                            "name": "loaderId",
+                            "$ref": "Network.LoaderId",
+                            "description": "Identifier of the loader associated with this frame."
+                        },
+                        {
+                            "name": "name",
+                            "type": "string",
+                            "optional": true,
+                            "description": "Frame's name as specified in the tag."
+                        },
+                        {
+                            "name": "url",
+                            "type": "string",
+                            "description": "Frame document's URL."
+                        },
+                        {
+                            "name": "securityOrigin",
+                            "type": "string",
+                            "description": "Frame document's security origin."
+                        },
+                        {
+                            "name": "mimeType",
+                            "type": "string",
+                            "description": "Frame document's mimeType as determined by the browser."
+                        }
+                    ]
+                },
+                {
+                    "id": "FrameResource",
+                    "type": "object",
+                    "description": "Information about the Resource on the page.",
+                    "properties": [
+                        {
+                            "name": "url",
+                            "type": "string",
+                            "description": "Resource URL."
+                        },
+                        {
+                            "name": "type",
+                            "$ref": "ResourceType",
+                            "description": "Type of this resource."
+                        },
+                        {
+                            "name": "mimeType",
+                            "type": "string",
+                            "description": "Resource mimeType as determined by the browser."
+                        },
+                        {
+                            "name": "lastModified",
+                            "$ref": "Network.Timestamp",
+                            "description": "last-modified timestamp as reported by server.",
+                            "optional": true
+                        },
+                        {
+                            "name": "contentSize",
+                            "type": "number",
+                            "description": "Resource content size.",
+                            "optional": true
+                        },
+                        {
+                            "name": "failed",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "True if the resource failed to load."
+                        },
+                        {
+                            "name": "canceled",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "True if the resource was canceled during loading."
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "id": "FrameResourceTree",
+                    "type": "object",
+                    "description": "Information about the Frame hierarchy along with their cached resources.",
+                    "properties": [
+                        {
+                            "name": "frame",
+                            "$ref": "Frame",
+                            "description": "Frame information for this tree item."
+                        },
+                        {
+                            "name": "childFrames",
+                            "type": "array",
+                            "optional": true,
+                            "items": {
+                                "$ref": "FrameResourceTree"
+                            },
+                            "description": "Child frames."
+                        },
+                        {
+                            "name": "resources",
+                            "type": "array",
+                            "items": {
+                                "$ref": "FrameResource"
+                            },
+                            "description": "Information about frame resources."
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "id": "ScriptIdentifier",
+                    "type": "string",
+                    "description": "Unique script identifier.",
+                    "experimental": true
+                },
+                {
+                    "id": "TransitionType",
+                    "type": "string",
+                    "description": "Transition type.",
+                    "experimental": true,
+                    "enum": [
+                        "link",
+                        "typed",
+                        "auto_bookmark",
+                        "auto_subframe",
+                        "manual_subframe",
+                        "generated",
+                        "auto_toplevel",
+                        "form_submit",
+                        "reload",
+                        "keyword",
+                        "keyword_generated",
+                        "other"
+                    ]
+                },
+                {
+                    "id": "NavigationEntry",
+                    "type": "object",
+                    "description": "Navigation history entry.",
+                    "properties": [
+                        {
+                            "name": "id",
+                            "type": "integer",
+                            "description": "Unique id of the navigation history entry."
+                        },
+                        {
+                            "name": "url",
+                            "type": "string",
+                            "description": "URL of the navigation history entry."
+                        },
+                        {
+                            "name": "userTypedURL",
+                            "type": "string",
+                            "description": "URL that the user typed in the url bar."
+                        },
+                        {
+                            "name": "title",
+                            "type": "string",
+                            "description": "Title of the navigation history entry."
+                        },
+                        {
+                            "name": "transitionType",
+                            "$ref": "TransitionType",
+                            "description": "Transition type."
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "id": "ScreencastFrameMetadata",
+                    "type": "object",
+                    "description": "Screencast frame metadata.",
+                    "properties": [
+                        {
+                            "name": "offsetTop",
+                            "type": "number",
+                            "experimental": true,
+                            "description": "Top offset in DIP."
+                        },
+                        {
+                            "name": "pageScaleFactor",
+                            "type": "number",
+                            "experimental": true,
+                            "description": "Page scale factor."
+                        },
+                        {
+                            "name": "deviceWidth",
+                            "type": "number",
+                            "experimental": true,
+                            "description": "Device screen width in DIP."
+                        },
+                        {
+                            "name": "deviceHeight",
+                            "type": "number",
+                            "experimental": true,
+                            "description": "Device screen height in DIP."
+                        },
+                        {
+                            "name": "scrollOffsetX",
+                            "type": "number",
+                            "experimental": true,
+                            "description": "Position of horizontal scroll in CSS pixels."
+                        },
+                        {
+                            "name": "scrollOffsetY",
+                            "type": "number",
+                            "experimental": true,
+                            "description": "Position of vertical scroll in CSS pixels."
+                        },
+                        {
+                            "name": "timestamp",
+                            "type": "number",
+                            "optional": true,
+                            "experimental": true,
+                            "description": "Frame swap timestamp."
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "id": "DialogType",
+                    "description": "Javascript dialog type.",
+                    "type": "string",
+                    "enum": [
+                        "alert",
+                        "confirm",
+                        "prompt",
+                        "beforeunload"
+                    ],
+                    "experimental": true
+                },
+                {
+                    "id": "AppManifestError",
+                    "description": "Error while paring app manifest.",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "message",
+                            "type": "string",
+                            "description": "Error message."
+                        },
+                        {
+                            "name": "critical",
+                            "type": "integer",
+                            "description": "If criticial, this is a non-recoverable parse error."
+                        },
+                        {
+                            "name": "line",
+                            "type": "integer",
+                            "description": "Error line."
+                        },
+                        {
+                            "name": "column",
+                            "type": "integer",
+                            "description": "Error column."
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "id": "NavigationResponse",
+                    "description": "Proceed: allow the navigation; Cancel: cancel the navigation; CancelAndIgnore: cancels the navigation and makes the requester of the navigation acts like the request was never made.",
+                    "type": "string",
+                    "enum": [
+                        "Proceed",
+                        "Cancel",
+                        "CancelAndIgnore"
+                    ],
+                    "experimental": true
+                },
+                {
+                    "id": "LayoutViewport",
+                    "type": "object",
+                    "description": "Layout viewport position and dimensions.",
+                    "experimental": true,
+                    "properties": [
+                        {
+                            "name": "pageX",
+                            "type": "integer",
+                            "description": "Horizontal offset relative to the document (CSS pixels)."
+                        },
+                        {
+                            "name": "pageY",
+                            "type": "integer",
+                            "description": "Vertical offset relative to the document (CSS pixels)."
+                        },
+                        {
+                            "name": "clientWidth",
+                            "type": "integer",
+                            "description": "Width (CSS pixels), excludes scrollbar if present."
+                        },
+                        {
+                            "name": "clientHeight",
+                            "type": "integer",
+                            "description": "Height (CSS pixels), excludes scrollbar if present."
+                        }
+                    ]
+                },
+                {
+                    "id": "VisualViewport",
+                    "type": "object",
+                    "description": "Visual viewport position, dimensions, and scale.",
+                    "experimental": true,
+                    "properties": [
+                        {
+                            "name": "offsetX",
+                            "type": "number",
+                            "description": "Horizontal offset relative to the layout viewport (CSS pixels)."
+                        },
+                        {
+                            "name": "offsetY",
+                            "type": "number",
+                            "description": "Vertical offset relative to the layout viewport (CSS pixels)."
+                        },
+                        {
+                            "name": "pageX",
+                            "type": "number",
+                            "description": "Horizontal offset relative to the document (CSS pixels)."
+                        },
+                        {
+                            "name": "pageY",
+                            "type": "number",
+                            "description": "Vertical offset relative to the document (CSS pixels)."
+                        },
+                        {
+                            "name": "clientWidth",
+                            "type": "number",
+                            "description": "Width (CSS pixels), excludes scrollbar if present."
+                        },
+                        {
+                            "name": "clientHeight",
+                            "type": "number",
+                            "description": "Height (CSS pixels), excludes scrollbar if present."
+                        },
+                        {
+                            "name": "scale",
+                            "type": "number",
+                            "description": "Scale relative to the ideal viewport (size at width=device-width)."
+                        }
+                    ]
+                }
+            ],
+            "commands": [
+                {
+                    "name": "enable",
+                    "description": "Enables page domain notifications."
+                },
+                {
+                    "name": "disable",
+                    "description": "Disables page domain notifications."
+                },
+                {
+                    "name": "addScriptToEvaluateOnLoad",
+                    "parameters": [
+                        {
+                            "name": "scriptSource",
+                            "type": "string"
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "identifier",
+                            "$ref": "ScriptIdentifier",
+                            "description": "Identifier of the added script."
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "name": "removeScriptToEvaluateOnLoad",
+                    "parameters": [
+                        {
+                            "name": "identifier",
+                            "$ref": "ScriptIdentifier"
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "name": "setAutoAttachToCreatedPages",
+                    "parameters": [
+                        {
+                            "name": "autoAttach",
+                            "type": "boolean",
+                            "description": "If true, browser will open a new inspector window for every page created from this one."
+                        }
+                    ],
+                    "description": "Controls whether browser will open a new inspector window for connected pages.",
+                    "experimental": true
+                },
+                {
+                    "name": "reload",
+                    "parameters": [
+                        {
+                            "name": "ignoreCache",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "If true, browser cache is ignored (as if the user pressed Shift+refresh)."
+                        },
+                        {
+                            "name": "scriptToEvaluateOnLoad",
+                            "type": "string",
+                            "optional": true,
+                            "description": "If set, the script will be injected into all frames of the inspected page after reload."
+                        }
+                    ],
+                    "description": "Reloads given page optionally ignoring the cache."
+                },
+                {
+                    "name": "navigate",
+                    "parameters": [
+                        {
+                            "name": "url",
+                            "type": "string",
+                            "description": "URL to navigate the page to."
+                        },
+                        {
+                            "name": "referrer",
+                            "type": "string",
+                            "optional": true,
+                            "experimental": true,
+                            "description": "Referrer URL."
+                        },
+                        {
+                            "name": "transitionType",
+                            "$ref": "TransitionType",
+                            "optional": true,
+                            "experimental": true,
+                            "description": "Intended transition type."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "frameId",
+                            "$ref": "FrameId",
+                            "experimental": true,
+                            "description": "Frame id that will be navigated."
+                        }
+                    ],
+                    "description": "Navigates current page to the given URL."
+                },
+                {
+                    "name": "stopLoading",
+                    "description": "Force the page stop all navigations and pending resource fetches.",
+                    "experimental": true
+                },
+                {
+                    "name": "getNavigationHistory",
+                    "returns": [
+                        {
+                            "name": "currentIndex",
+                            "type": "integer",
+                            "description": "Index of the current navigation history entry."
+                        },
+                        {
+                            "name": "entries",
+                            "type": "array",
+                            "items": {
+                                "$ref": "NavigationEntry"
+                            },
+                            "description": "Array of navigation history entries."
+                        }
+                    ],
+                    "description": "Returns navigation history for the current page.",
+                    "experimental": true
+                },
+                {
+                    "name": "navigateToHistoryEntry",
+                    "parameters": [
+                        {
+                            "name": "entryId",
+                            "type": "integer",
+                            "description": "Unique id of the entry to navigate to."
+                        }
+                    ],
+                    "description": "Navigates current page to the given history entry.",
+                    "experimental": true
+                },
+                {
+                    "name": "getCookies",
+                    "returns": [
+                        {
+                            "name": "cookies",
+                            "type": "array",
+                            "items": {
+                                "$ref": "Network.Cookie"
+                            },
+                            "description": "Array of cookie objects."
+                        }
+                    ],
+                    "description": "Returns all browser cookies. Depending on the backend support, will return detailed cookie information in the <code>cookies</code> field.",
+                    "experimental": true,
+                    "redirect": "Network"
+                },
+                {
+                    "name": "deleteCookie",
+                    "parameters": [
+                        {
+                            "name": "cookieName",
+                            "type": "string",
+                            "description": "Name of the cookie to remove."
+                        },
+                        {
+                            "name": "url",
+                            "type": "string",
+                            "description": "URL to match cooke domain and path."
+                        }
+                    ],
+                    "description": "Deletes browser cookie with given name, domain and path.",
+                    "experimental": true,
+                    "redirect": "Network"
+                },
+                {
+                    "name": "getResourceTree",
+                    "description": "Returns present frame / resource tree structure.",
+                    "returns": [
+                        {
+                            "name": "frameTree",
+                            "$ref": "FrameResourceTree",
+                            "description": "Present frame / resource tree structure."
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "name": "getResourceContent",
+                    "description": "Returns content of the given resource.",
+                    "parameters": [
+                        {
+                            "name": "frameId",
+                            "$ref": "FrameId",
+                            "description": "Frame id to get resource for."
+                        },
+                        {
+                            "name": "url",
+                            "type": "string",
+                            "description": "URL of the resource to get content for."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "content",
+                            "type": "string",
+                            "description": "Resource content."
+                        },
+                        {
+                            "name": "base64Encoded",
+                            "type": "boolean",
+                            "description": "True, if content was served as base64."
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "name": "searchInResource",
+                    "description": "Searches for given string in resource content.",
+                    "parameters": [
+                        {
+                            "name": "frameId",
+                            "$ref": "FrameId",
+                            "description": "Frame id for resource to search in."
+                        },
+                        {
+                            "name": "url",
+                            "type": "string",
+                            "description": "URL of the resource to search in."
+                        },
+                        {
+                            "name": "query",
+                            "type": "string",
+                            "description": "String to search for."
+                        },
+                        {
+                            "name": "caseSensitive",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "If true, search is case sensitive."
+                        },
+                        {
+                            "name": "isRegex",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "If true, treats string parameter as regex."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "result",
+                            "type": "array",
+                            "items": {
+                                "$ref": "Debugger.SearchMatch"
+                            },
+                            "description": "List of search matches."
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "name": "setDocumentContent",
+                    "description": "Sets given markup as the document's HTML.",
+                    "parameters": [
+                        {
+                            "name": "frameId",
+                            "$ref": "FrameId",
+                            "description": "Frame id to set HTML for."
+                        },
+                        {
+                            "name": "html",
+                            "type": "string",
+                            "description": "HTML content to set."
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "name": "setDeviceMetricsOverride",
+                    "description": "Overrides the values of device screen dimensions (window.screen.width, window.screen.height, window.innerWidth, window.innerHeight, and \"device-width\"/\"device-height\"-related CSS media query results).",
+                    "parameters": [
+                        {
+                            "name": "width",
+                            "type": "integer",
+                            "description": "Overriding width value in pixels (minimum 0, maximum 10000000). 0 disables the override."
+                        },
+                        {
+                            "name": "height",
+                            "type": "integer",
+                            "description": "Overriding height value in pixels (minimum 0, maximum 10000000). 0 disables the override."
+                        },
+                        {
+                            "name": "deviceScaleFactor",
+                            "type": "number",
+                            "description": "Overriding device scale factor value. 0 disables the override."
+                        },
+                        {
+                            "name": "mobile",
+                            "type": "boolean",
+                            "description": "Whether to emulate mobile device. This includes viewport meta tag, overlay scrollbars, text autosizing and more."
+                        },
+                        {
+                            "name": "fitWindow",
+                            "type": "boolean",
+                            "description": "Whether a view that exceeds the available browser window area should be scaled down to fit."
+                        },
+                        {
+                            "name": "scale",
+                            "type": "number",
+                            "optional": true,
+                            "description": "Scale to apply to resulting view image. Ignored in |fitWindow| mode."
+                        },
+                        {
+                            "name": "offsetX",
+                            "type": "number",
+                            "optional": true,
+                            "description": "X offset to shift resulting view image by. Ignored in |fitWindow| mode."
+                        },
+                        {
+                            "name": "offsetY",
+                            "type": "number",
+                            "optional": true,
+                            "description": "Y offset to shift resulting view image by. Ignored in |fitWindow| mode."
+                        },
+                        {
+                            "name": "screenWidth",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "Overriding screen width value in pixels (minimum 0, maximum 10000000). Only used for |mobile==true|."
+                        },
+                        {
+                            "name": "screenHeight",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "Overriding screen height value in pixels (minimum 0, maximum 10000000). Only used for |mobile==true|."
+                        },
+                        {
+                            "name": "positionX",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "Overriding view X position on screen in pixels (minimum 0, maximum 10000000). Only used for |mobile==true|."
+                        },
+                        {
+                            "name": "positionY",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "Overriding view Y position on screen in pixels (minimum 0, maximum 10000000). Only used for |mobile==true|."
+                        },
+                        {
+                            "name": "screenOrientation",
+                            "$ref": "Emulation.ScreenOrientation",
+                            "optional": true,
+                            "description": "Screen orientation override."
+                        }
+                    ],
+                    "redirect": "Emulation",
+                    "experimental": true
+                },
+                {
+                    "name": "clearDeviceMetricsOverride",
+                    "description": "Clears the overriden device metrics.",
+                    "redirect": "Emulation",
+                    "experimental": true
+                },
+                {
+                    "name": "setGeolocationOverride",
+                    "description": "Overrides the Geolocation Position or Error. Omitting any of the parameters emulates position unavailable.",
+                    "parameters": [
+                        {
+                            "name": "latitude",
+                            "type": "number",
+                            "optional": true,
+                            "description": "Mock latitude"
+                        },
+                        {
+                            "name": "longitude",
+                            "type": "number",
+                            "optional": true,
+                            "description": "Mock longitude"
+                        },
+                        {
+                            "name": "accuracy",
+                            "type": "number",
+                            "optional": true,
+                            "description": "Mock accuracy"
+                        }
+                    ],
+                    "redirect": "Emulation"
+                },
+                {
+                    "name": "clearGeolocationOverride",
+                    "description": "Clears the overriden Geolocation Position and Error.",
+                    "redirect": "Emulation"
+                },
+                {
+                    "name": "setDeviceOrientationOverride",
+                    "description": "Overrides the Device Orientation.",
+                    "parameters": [
+                        {
+                            "name": "alpha",
+                            "type": "number",
+                            "description": "Mock alpha"
+                        },
+                        {
+                            "name": "beta",
+                            "type": "number",
+                            "description": "Mock beta"
+                        },
+                        {
+                            "name": "gamma",
+                            "type": "number",
+                            "description": "Mock gamma"
+                        }
+                    ],
+                    "redirect": "DeviceOrientation",
+                    "experimental": true
+                },
+                {
+                    "name": "clearDeviceOrientationOverride",
+                    "description": "Clears the overridden Device Orientation.",
+                    "redirect": "DeviceOrientation",
+                    "experimental": true
+                },
+                {
+                    "name": "setTouchEmulationEnabled",
+                    "parameters": [
+                        {
+                            "name": "enabled",
+                            "type": "boolean",
+                            "description": "Whether the touch event emulation should be enabled."
+                        },
+                        {
+                            "name": "configuration",
+                            "type": "string",
+                            "enum": [
+                                "mobile",
+                                "desktop"
+                            ],
+                            "optional": true,
+                            "description": "Touch/gesture events configuration. Default: current platform."
+                        }
+                    ],
+                    "description": "Toggles mouse event-based touch event emulation.",
+                    "experimental": true,
+                    "redirect": "Emulation"
+                },
+                {
+                    "name": "captureScreenshot",
+                    "description": "Capture page screenshot.",
+                    "parameters": [
+                        {
+                            "name": "format",
+                            "type": "string",
+                            "optional": true,
+                            "enum": [
+                                "jpeg",
+                                "png"
+                            ],
+                            "description": "Image compression format (defaults to png)."
+                        },
+                        {
+                            "name": "quality",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "Compression quality from range [0..100] (jpeg only)."
+                        },
+                        {
+                            "name": "fromSurface",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Capture the screenshot from the surface, rather than the view. Defaults to true.",
+                            "experimental": true
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "data",
+                            "type": "string",
+                            "description": "Base64-encoded image data."
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "name": "printToPDF",
+                    "description": "Print page as PDF.",
+                    "parameters": [
+                        {
+                            "name": "landscape",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Paper orientation. Defaults to false."
+                        },
+                        {
+                            "name": "displayHeaderFooter",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Display header and footer. Defaults to false."
+                        },
+                        {
+                            "name": "printBackground",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Print background graphics. Defaults to false."
+                        },
+                        {
+                            "name": "scale",
+                            "type": "number",
+                            "optional": true,
+                            "description": "Scale of the webpage rendering. Defaults to 1."
+                        },
+                        {
+                            "name": "paperWidth",
+                            "type": "number",
+                            "optional": true,
+                            "description": "Paper width in inches. Defaults to 8.5 inches."
+                        },
+                        {
+                            "name": "paperHeight",
+                            "type": "number",
+                            "optional": true,
+                            "description": "Paper height in inches. Defaults to 11 inches."
+                        },
+                        {
+                            "name": "marginTop",
+                            "type": "number",
+                            "optional": true,
+                            "description": "Top margin in inches. Defaults to 1cm (~0.4 inches)."
+                        },
+                        {
+                            "name": "marginBottom",
+                            "type": "number",
+                            "optional": true,
+                            "description": "Bottom margin in inches. Defaults to 1cm (~0.4 inches)."
+                        },
+                        {
+                            "name": "marginLeft",
+                            "type": "number",
+                            "optional": true,
+                            "description": "Left margin in inches. Defaults to 1cm (~0.4 inches)."
+                        },
+                        {
+                            "name": "marginRight",
+                            "type": "number",
+                            "optional": true,
+                            "description": "Right margin in inches. Defaults to 1cm (~0.4 inches)."
+                        },
+                        {
+                            "name": "pageRanges",
+                            "type": "string",
+                            "optional": true,
+                            "description": "Paper ranges to print, e.g., '1-5, 8, 11-13'. Defaults to the empty string, which means print all pages."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "data",
+                            "type": "string",
+                            "description": "Base64-encoded pdf data."
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "name": "startScreencast",
+                    "description": "Starts sending each frame using the <code>screencastFrame</code> event.",
+                    "parameters": [
+                        {
+                            "name": "format",
+                            "type": "string",
+                            "optional": true,
+                            "enum": [
+                                "jpeg",
+                                "png"
+                            ],
+                            "description": "Image compression format."
+                        },
+                        {
+                            "name": "quality",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "Compression quality from range [0..100]."
+                        },
+                        {
+                            "name": "maxWidth",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "Maximum screenshot width."
+                        },
+                        {
+                            "name": "maxHeight",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "Maximum screenshot height."
+                        },
+                        {
+                            "name": "everyNthFrame",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "Send every n-th frame."
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "name": "stopScreencast",
+                    "description": "Stops sending each frame in the <code>screencastFrame</code>.",
+                    "experimental": true
+                },
+                {
+                    "name": "screencastFrameAck",
+                    "description": "Acknowledges that a screencast frame has been received by the frontend.",
+                    "parameters": [
+                        {
+                            "name": "sessionId",
+                            "type": "integer",
+                            "description": "Frame number."
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "name": "handleJavaScriptDialog",
+                    "description": "Accepts or dismisses a JavaScript initiated dialog (alert, confirm, prompt, or onbeforeunload).",
+                    "parameters": [
+                        {
+                            "name": "accept",
+                            "type": "boolean",
+                            "description": "Whether to accept or dismiss the dialog."
+                        },
+                        {
+                            "name": "promptText",
+                            "type": "string",
+                            "optional": true,
+                            "description": "The text to enter into the dialog prompt before accepting. Used only if this is a prompt dialog."
+                        }
+                    ]
+                },
+                {
+                    "name": "getAppManifest",
+                    "experimental": true,
+                    "returns": [
+                        {
+                            "name": "url",
+                            "type": "string",
+                            "description": "Manifest location."
+                        },
+                        {
+                            "name": "errors",
+                            "type": "array",
+                            "items": {
+                                "$ref": "AppManifestError"
+                            }
+                        },
+                        {
+                            "name": "data",
+                            "type": "string",
+                            "optional": true,
+                            "description": "Manifest content."
+                        }
+                    ]
+                },
+                {
+                    "name": "requestAppBanner",
+                    "experimental": true
+                },
+                {
+                    "name": "setControlNavigations",
+                    "parameters": [
+                        {
+                            "name": "enabled",
+                            "type": "boolean"
+                        }
+                    ],
+                    "description": "Toggles navigation throttling which allows programatic control over navigation and redirect response.",
+                    "experimental": true
+                },
+                {
+                    "name": "processNavigation",
+                    "parameters": [
+                        {
+                            "name": "response",
+                            "$ref": "NavigationResponse"
+                        },
+                        {
+                            "name": "navigationId",
+                            "type": "integer"
+                        }
+                    ],
+                    "description": "Should be sent in response to a navigationRequested or a redirectRequested event, telling the browser how to handle the navigation.",
+                    "experimental": true
+                },
+                {
+                    "name": "getLayoutMetrics",
+                    "description": "Returns metrics relating to the layouting of the page, such as viewport bounds/scale.",
+                    "experimental": true,
+                    "returns": [
+                        {
+                            "name": "layoutViewport",
+                            "$ref": "LayoutViewport",
+                            "description": "Metrics relating to the layout viewport."
+                        },
+                        {
+                            "name": "visualViewport",
+                            "$ref": "VisualViewport",
+                            "description": "Metrics relating to the visual viewport."
+                        },
+                        {
+                            "name": "contentSize",
+                            "$ref": "DOM.Rect",
+                            "description": "Size of scrollable area."
+                        }
+                    ]
+                },
+                {
+                    "name": "createIsolatedWorld",
+                    "description": "Creates an isolated world for the given frame.",
+                    "experimental": true,
+                    "parameters": [
+                        {
+                            "name": "frameId",
+                            "$ref": "FrameId",
+                            "description": "Id of the frame in which the isolated world should be created."
+                        },
+                        {
+                            "name": "worldName",
+                            "type": "string",
+                            "optional": true,
+                            "description": "An optional name which is reported in the Execution Context."
+                        },
+                        {
+                            "name": "grantUniveralAccess",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Whether or not universal access should be granted to the isolated world. This is a powerful option, use with caution."
+                        }
+                    ]
+                }
+            ],
+            "events": [
+                {
+                    "name": "domContentEventFired",
+                    "parameters": [
+                        {
+                            "name": "timestamp",
+                            "type": "number"
+                        }
+                    ]
+                },
+                {
+                    "name": "loadEventFired",
+                    "parameters": [
+                        {
+                            "name": "timestamp",
+                            "type": "number"
+                        }
+                    ]
+                },
+                {
+                    "name": "frameAttached",
+                    "description": "Fired when frame has been attached to its parent.",
+                    "parameters": [
+                        {
+                            "name": "frameId",
+                            "$ref": "FrameId",
+                            "description": "Id of the frame that has been attached."
+                        },
+                        {
+                            "name": "parentFrameId",
+                            "$ref": "FrameId",
+                            "description": "Parent frame identifier."
+                        },
+                        {
+                            "name": "stack",
+                            "$ref": "Runtime.StackTrace",
+                            "optional": true,
+                            "description": "JavaScript stack trace of when frame was attached, only set if frame initiated from script.",
+                            "experimental": true
+                        }
+                    ]
+                },
+                {
+                    "name": "frameNavigated",
+                    "description": "Fired once navigation of the frame has completed. Frame is now associated with the new loader.",
+                    "parameters": [
+                        {
+                            "name": "frame",
+                            "$ref": "Frame",
+                            "description": "Frame object."
+                        }
+                    ]
+                },
+                {
+                    "name": "frameDetached",
+                    "description": "Fired when frame has been detached from its parent.",
+                    "parameters": [
+                        {
+                            "name": "frameId",
+                            "$ref": "FrameId",
+                            "description": "Id of the frame that has been detached."
+                        }
+                    ]
+                },
+                {
+                    "name": "frameStartedLoading",
+                    "description": "Fired when frame has started loading.",
+                    "parameters": [
+                        {
+                            "name": "frameId",
+                            "$ref": "FrameId",
+                            "description": "Id of the frame that has started loading."
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "name": "frameStoppedLoading",
+                    "description": "Fired when frame has stopped loading.",
+                    "parameters": [
+                        {
+                            "name": "frameId",
+                            "$ref": "FrameId",
+                            "description": "Id of the frame that has stopped loading."
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "name": "frameScheduledNavigation",
+                    "description": "Fired when frame schedules a potential navigation.",
+                    "parameters": [
+                        {
+                            "name": "frameId",
+                            "$ref": "FrameId",
+                            "description": "Id of the frame that has scheduled a navigation."
+                        },
+                        {
+                            "name": "delay",
+                            "type": "number",
+                            "description": "Delay (in seconds) until the navigation is scheduled to begin. The navigation is not guaranteed to start."
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "name": "frameClearedScheduledNavigation",
+                    "description": "Fired when frame no longer has a scheduled navigation.",
+                    "parameters": [
+                        {
+                            "name": "frameId",
+                            "$ref": "FrameId",
+                            "description": "Id of the frame that has cleared its scheduled navigation."
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "name": "frameResized",
+                    "experimental": true
+                },
+                {
+                    "name": "javascriptDialogOpening",
+                    "description": "Fired when a JavaScript initiated dialog (alert, confirm, prompt, or onbeforeunload) is about to open.",
+                    "parameters": [
+                        {
+                            "name": "message",
+                            "type": "string",
+                            "description": "Message that will be displayed by the dialog."
+                        },
+                        {
+                            "name": "type",
+                            "$ref": "DialogType",
+                            "description": "Dialog type."
+                        }
+                    ]
+                },
+                {
+                    "name": "javascriptDialogClosed",
+                    "description": "Fired when a JavaScript initiated dialog (alert, confirm, prompt, or onbeforeunload) has been closed.",
+                    "parameters": [
+                        {
+                            "name": "result",
+                            "type": "boolean",
+                            "description": "Whether dialog was confirmed."
+                        }
+                    ]
+                },
+                {
+                    "name": "screencastFrame",
+                    "description": "Compressed image data requested by the <code>startScreencast</code>.",
+                    "parameters": [
+                        {
+                            "name": "data",
+                            "type": "string",
+                            "description": "Base64-encoded compressed image."
+                        },
+                        {
+                            "name": "metadata",
+                            "$ref": "ScreencastFrameMetadata",
+                            "description": "Screencast frame metadata."
+                        },
+                        {
+                            "name": "sessionId",
+                            "type": "integer",
+                            "description": "Frame number."
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "name": "screencastVisibilityChanged",
+                    "description": "Fired when the page with currently enabled screencast was shown or hidden </code>.",
+                    "parameters": [
+                        {
+                            "name": "visible",
+                            "type": "boolean",
+                            "description": "True if the page is visible."
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "name": "interstitialShown",
+                    "description": "Fired when interstitial page was shown"
+                },
+                {
+                    "name": "interstitialHidden",
+                    "description": "Fired when interstitial page was hidden"
+                },
+                {
+                    "name": "navigationRequested",
+                    "description": "Fired when a navigation is started if navigation throttles are enabled.  The navigation will be deferred until processNavigation is called.",
+                    "parameters": [
+                        {
+                            "name": "isInMainFrame",
+                            "type": "boolean",
+                            "description": "Whether the navigation is taking place in the main frame or in a subframe."
+                        },
+                        {
+                            "name": "isRedirect",
+                            "type": "boolean",
+                            "description": "Whether the navigation has encountered a server redirect or not."
+                        },
+                        {
+                            "name": "navigationId",
+                            "type": "integer"
+                        },
+                        {
+                            "name": "url",
+                            "type": "string",
+                            "description": "URL of requested navigation."
+                        }
+                    ]
+                }
+            ]
+        },
+        {
+            "domain": "Overlay",
+            "description": "This domain provides various functionality related to drawing atop the inspected page.",
+            "dependencies": [
+                "DOM",
+                "Page",
+                "Runtime"
+            ],
+            "experimental": true,
+            "types": [
+                {
+                    "id": "HighlightConfig",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "showInfo",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Whether the node info tooltip should be shown (default: false)."
+                        },
+                        {
+                            "name": "showRulers",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Whether the rulers should be shown (default: false)."
+                        },
+                        {
+                            "name": "showExtensionLines",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Whether the extension lines from node to the rulers should be shown (default: false)."
+                        },
+                        {
+                            "name": "displayAsMaterial",
+                            "type": "boolean",
+                            "optional": true
+                        },
+                        {
+                            "name": "contentColor",
+                            "$ref": "DOM.RGBA",
+                            "optional": true,
+                            "description": "The content box highlight fill color (default: transparent)."
+                        },
+                        {
+                            "name": "paddingColor",
+                            "$ref": "DOM.RGBA",
+                            "optional": true,
+                            "description": "The padding highlight fill color (default: transparent)."
+                        },
+                        {
+                            "name": "borderColor",
+                            "$ref": "DOM.RGBA",
+                            "optional": true,
+                            "description": "The border highlight fill color (default: transparent)."
+                        },
+                        {
+                            "name": "marginColor",
+                            "$ref": "DOM.RGBA",
+                            "optional": true,
+                            "description": "The margin highlight fill color (default: transparent)."
+                        },
+                        {
+                            "name": "eventTargetColor",
+                            "$ref": "DOM.RGBA",
+                            "optional": true,
+                            "description": "The event target element highlight fill color (default: transparent)."
+                        },
+                        {
+                            "name": "shapeColor",
+                            "$ref": "DOM.RGBA",
+                            "optional": true,
+                            "description": "The shape outside fill color (default: transparent)."
+                        },
+                        {
+                            "name": "shapeMarginColor",
+                            "$ref": "DOM.RGBA",
+                            "optional": true,
+                            "description": "The shape margin fill color (default: transparent)."
+                        },
+                        {
+                            "name": "selectorList",
+                            "type": "string",
+                            "optional": true,
+                            "description": "Selectors to highlight relevant nodes."
+                        }
+                    ],
+                    "description": "Configuration data for the highlighting of page elements."
+                },
+                {
+                    "id": "InspectMode",
+                    "type": "string",
+                    "enum": [
+                        "searchForNode",
+                        "searchForUAShadowDOM",
+                        "none"
+                    ]
+                }
+            ],
+            "commands": [
+                {
+                    "name": "enable",
+                    "description": "Enables domain notifications."
+                },
+                {
+                    "name": "disable",
+                    "description": "Disables domain notifications."
+                },
+                {
+                    "name": "setShowPaintRects",
+                    "description": "Requests that backend shows paint rectangles",
+                    "parameters": [
+                        {
+                            "name": "result",
+                            "type": "boolean",
+                            "description": "True for showing paint rectangles"
+                        }
+                    ]
+                },
+                {
+                    "name": "setShowDebugBorders",
+                    "description": "Requests that backend shows debug borders on layers",
+                    "parameters": [
+                        {
+                            "name": "show",
+                            "type": "boolean",
+                            "description": "True for showing debug borders"
+                        }
+                    ]
+                },
+                {
+                    "name": "setShowFPSCounter",
+                    "description": "Requests that backend shows the FPS counter",
+                    "parameters": [
+                        {
+                            "name": "show",
+                            "type": "boolean",
+                            "description": "True for showing the FPS counter"
+                        }
+                    ]
+                },
+                {
+                    "name": "setShowScrollBottleneckRects",
+                    "description": "Requests that backend shows scroll bottleneck rects",
+                    "parameters": [
+                        {
+                            "name": "show",
+                            "type": "boolean",
+                            "description": "True for showing scroll bottleneck rects"
+                        }
+                    ]
+                },
+                {
+                    "name": "setShowViewportSizeOnResize",
+                    "description": "Paints viewport size upon main frame resize.",
+                    "parameters": [
+                        {
+                            "name": "show",
+                            "type": "boolean",
+                            "description": "Whether to paint size or not."
+                        }
+                    ]
+                },
+                {
+                    "name": "setPausedInDebuggerMessage",
+                    "parameters": [
+                        {
+                            "name": "message",
+                            "type": "string",
+                            "optional": true,
+                            "description": "The message to display, also triggers resume and step over controls."
+                        }
+                    ]
+                },
+                {
+                    "name": "setSuspended",
+                    "parameters": [
+                        {
+                            "name": "suspended",
+                            "type": "boolean",
+                            "description": "Whether overlay should be suspended and not consume any resources until resumed."
+                        }
+                    ]
+                },
+                {
+                    "name": "setInspectMode",
+                    "description": "Enters the 'inspect' mode. In this mode, elements that user is hovering over are highlighted. Backend then generates 'inspectNodeRequested' event upon element selection.",
+                    "parameters": [
+                        {
+                            "name": "mode",
+                            "$ref": "InspectMode",
+                            "description": "Set an inspection mode."
+                        },
+                        {
+                            "name": "highlightConfig",
+                            "$ref": "HighlightConfig",
+                            "optional": true,
+                            "description": "A descriptor for the highlight appearance of hovered-over nodes. May be omitted if <code>enabled == false</code>."
+                        }
+                    ]
+                },
+                {
+                    "name": "highlightRect",
+                    "description": "Highlights given rectangle. Coordinates are absolute with respect to the main frame viewport.",
+                    "parameters": [
+                        {
+                            "name": "x",
+                            "type": "integer",
+                            "description": "X coordinate"
+                        },
+                        {
+                            "name": "y",
+                            "type": "integer",
+                            "description": "Y coordinate"
+                        },
+                        {
+                            "name": "width",
+                            "type": "integer",
+                            "description": "Rectangle width"
+                        },
+                        {
+                            "name": "height",
+                            "type": "integer",
+                            "description": "Rectangle height"
+                        },
+                        {
+                            "name": "color",
+                            "$ref": "DOM.RGBA",
+                            "optional": true,
+                            "description": "The highlight fill color (default: transparent)."
+                        },
+                        {
+                            "name": "outlineColor",
+                            "$ref": "DOM.RGBA",
+                            "optional": true,
+                            "description": "The highlight outline color (default: transparent)."
+                        }
+                    ]
+                },
+                {
+                    "name": "highlightQuad",
+                    "description": "Highlights given quad. Coordinates are absolute with respect to the main frame viewport.",
+                    "parameters": [
+                        {
+                            "name": "quad",
+                            "$ref": "DOM.Quad",
+                            "description": "Quad to highlight"
+                        },
+                        {
+                            "name": "color",
+                            "$ref": "DOM.RGBA",
+                            "optional": true,
+                            "description": "The highlight fill color (default: transparent)."
+                        },
+                        {
+                            "name": "outlineColor",
+                            "$ref": "DOM.RGBA",
+                            "optional": true,
+                            "description": "The highlight outline color (default: transparent)."
+                        }
+                    ]
+                },
+                {
+                    "name": "highlightNode",
+                    "description": "Highlights DOM node with given id or with the given JavaScript object wrapper. Either nodeId or objectId must be specified.",
+                    "parameters": [
+                        {
+                            "name": "highlightConfig",
+                            "$ref": "HighlightConfig",
+                            "description": "A descriptor for the highlight appearance."
+                        },
+                        {
+                            "name": "nodeId",
+                            "$ref": "DOM.NodeId",
+                            "optional": true,
+                            "description": "Identifier of the node to highlight."
+                        },
+                        {
+                            "name": "backendNodeId",
+                            "$ref": "DOM.BackendNodeId",
+                            "optional": true,
+                            "description": "Identifier of the backend node to highlight."
+                        },
+                        {
+                            "name": "objectId",
+                            "$ref": "Runtime.RemoteObjectId",
+                            "optional": true,
+                            "description": "JavaScript object id of the node to be highlighted."
+                        }
+                    ]
+                },
+                {
+                    "name": "highlightFrame",
+                    "description": "Highlights owner element of the frame with given id.",
+                    "parameters": [
+                        {
+                            "name": "frameId",
+                            "$ref": "Page.FrameId",
+                            "description": "Identifier of the frame to highlight."
+                        },
+                        {
+                            "name": "contentColor",
+                            "$ref": "DOM.RGBA",
+                            "optional": true,
+                            "description": "The content box highlight fill color (default: transparent)."
+                        },
+                        {
+                            "name": "contentOutlineColor",
+                            "$ref": "DOM.RGBA",
+                            "optional": true,
+                            "description": "The content box highlight outline color (default: transparent)."
+                        }
+                    ]
+                },
+                {
+                    "name": "hideHighlight",
+                    "description": "Hides any highlight."
+                },
+                {
+                    "name": "getHighlightObjectForTest",
+                    "description": "For testing.",
+                    "parameters": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "DOM.NodeId",
+                            "description": "Id of the node to get highlight object for."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "highlight",
+                            "type": "object",
+                            "description": "Highlight data for the node."
+                        }
+                    ]
+                }
+            ],
+            "events": [
+                {
+                    "name": "nodeHighlightRequested",
+                    "description": "Fired when the node should be highlighted. This happens after call to <code>setInspectMode</code>.",
+                    "parameters": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "DOM.NodeId"
+                        }
+                    ]
+                },
+                {
+                    "name": "inspectNodeRequested",
+                    "description": "Fired when the node should be inspected. This happens after call to <code>setInspectMode</code> or when user manually inspects an element.",
+                    "parameters": [
+                        {
+                            "name": "backendNodeId",
+                            "$ref": "DOM.BackendNodeId",
+                            "description": "Id of the node to inspect."
+                        }
+                    ]
+                }
+            ]
+        },
+        {
+            "domain": "Emulation",
+            "description": "This domain emulates different environments for the page.",
+            "dependencies": [
+                "DOM"
+            ],
+            "types": [
+                {
+                    "id": "ScreenOrientation",
+                    "type": "object",
+                    "description": "Screen orientation.",
+                    "properties": [
+                        {
+                            "name": "type",
+                            "type": "string",
+                            "enum": [
+                                "portraitPrimary",
+                                "portraitSecondary",
+                                "landscapePrimary",
+                                "landscapeSecondary"
+                            ],
+                            "description": "Orientation type."
+                        },
+                        {
+                            "name": "angle",
+                            "type": "integer",
+                            "description": "Orientation angle."
+                        }
+                    ]
+                },
+                {
+                    "id": "VirtualTimePolicy",
+                    "type": "string",
+                    "enum": [
+                        "advance",
+                        "pause",
+                        "pauseIfNetworkFetchesPending"
+                    ],
+                    "experimental": true,
+                    "description": "advance: If the scheduler runs out of immediate work, the virtual time base may fast forward to allow the next delayed task (if any) to run; pause: The virtual time base may not advance; pauseIfNetworkFetchesPending: The virtual time base may not advance if there are any pending resource fetches."
+                }
+            ],
+            "commands": [
+                {
+                    "name": "setDeviceMetricsOverride",
+                    "description": "Overrides the values of device screen dimensions (window.screen.width, window.screen.height, window.innerWidth, window.innerHeight, and \"device-width\"/\"device-height\"-related CSS media query results).",
+                    "parameters": [
+                        {
+                            "name": "width",
+                            "type": "integer",
+                            "description": "Overriding width value in pixels (minimum 0, maximum 10000000). 0 disables the override."
+                        },
+                        {
+                            "name": "height",
+                            "type": "integer",
+                            "description": "Overriding height value in pixels (minimum 0, maximum 10000000). 0 disables the override."
+                        },
+                        {
+                            "name": "deviceScaleFactor",
+                            "type": "number",
+                            "description": "Overriding device scale factor value. 0 disables the override."
+                        },
+                        {
+                            "name": "mobile",
+                            "type": "boolean",
+                            "description": "Whether to emulate mobile device. This includes viewport meta tag, overlay scrollbars, text autosizing and more."
+                        },
+                        {
+                            "name": "fitWindow",
+                            "type": "boolean",
+                            "description": "Whether a view that exceeds the available browser window area should be scaled down to fit."
+                        },
+                        {
+                            "name": "scale",
+                            "type": "number",
+                            "optional": true,
+                            "experimental": true,
+                            "description": "Scale to apply to resulting view image. Ignored in |fitWindow| mode."
+                        },
+                        {
+                            "name": "offsetX",
+                            "type": "number",
+                            "optional": true,
+                            "deprecated": true,
+                            "experimental": true,
+                            "description": "Not used."
+                        },
+                        {
+                            "name": "offsetY",
+                            "type": "number",
+                            "optional": true,
+                            "deprecated": true,
+                            "experimental": true,
+                            "description": "Not used."
+                        },
+                        {
+                            "name": "screenWidth",
+                            "type": "integer",
+                            "optional": true,
+                            "experimental": true,
+                            "description": "Overriding screen width value in pixels (minimum 0, maximum 10000000). Only used for |mobile==true|."
+                        },
+                        {
+                            "name": "screenHeight",
+                            "type": "integer",
+                            "optional": true,
+                            "experimental": true,
+                            "description": "Overriding screen height value in pixels (minimum 0, maximum 10000000). Only used for |mobile==true|."
+                        },
+                        {
+                            "name": "positionX",
+                            "type": "integer",
+                            "optional": true,
+                            "experimental": true,
+                            "description": "Overriding view X position on screen in pixels (minimum 0, maximum 10000000). Only used for |mobile==true|."
+                        },
+                        {
+                            "name": "positionY",
+                            "type": "integer",
+                            "optional": true,
+                            "experimental": true,
+                            "description": "Overriding view Y position on screen in pixels (minimum 0, maximum 10000000). Only used for |mobile==true|."
+                        },
+                        {
+                            "name": "screenOrientation",
+                            "$ref": "ScreenOrientation",
+                            "optional": true,
+                            "description": "Screen orientation override."
+                        }
+                    ]
+                },
+                {
+                    "name": "clearDeviceMetricsOverride",
+                    "description": "Clears the overriden device metrics."
+                },
+                {
+                    "name": "forceViewport",
+                    "description": "Overrides the visible area of the page. The change is hidden from the page, i.e. the observable scroll position and page scale does not change. In effect, the command moves the specified area of the page into the top-left corner of the frame.",
+                    "experimental": true,
+                    "parameters": [
+                        {
+                            "name": "x",
+                            "type": "number",
+                            "description": "X coordinate of top-left corner of the area (CSS pixels)."
+                        },
+                        {
+                            "name": "y",
+                            "type": "number",
+                            "description": "Y coordinate of top-left corner of the area (CSS pixels)."
+                        },
+                        {
+                            "name": "scale",
+                            "type": "number",
+                            "description": "Scale to apply to the area (relative to a page scale of 1.0)."
+                        }
+                    ]
+                },
+                {
+                    "name": "resetViewport",
+                    "description": "Resets the visible area of the page to the original viewport, undoing any effects of the <code>forceViewport</code> command.",
+                    "experimental": true
+                },
+                {
+                    "name": "resetPageScaleFactor",
+                    "experimental": true,
+                    "description": "Requests that page scale factor is reset to initial values."
+                },
+                {
+                    "name": "setPageScaleFactor",
+                    "description": "Sets a specified page scale factor.",
+                    "experimental": true,
+                    "parameters": [
+                        {
+                            "name": "pageScaleFactor",
+                            "type": "number",
+                            "description": "Page scale factor."
+                        }
+                    ]
+                },
+                {
+                    "name": "setVisibleSize",
+                    "description": "Resizes the frame/viewport of the page. Note that this does not affect the frame's container (e.g. browser window). Can be used to produce screenshots of the specified size. Not supported on Android.",
+                    "experimental": true,
+                    "parameters": [
+                        {
+                            "name": "width",
+                            "type": "integer",
+                            "description": "Frame width (DIP)."
+                        },
+                        {
+                            "name": "height",
+                            "type": "integer",
+                            "description": "Frame height (DIP)."
+                        }
+                    ]
+                },
+                {
+                    "name": "setScriptExecutionDisabled",
+                    "description": "Switches script execution in the page.",
+                    "experimental": true,
+                    "parameters": [
+                        {
+                            "name": "value",
+                            "type": "boolean",
+                            "description": "Whether script execution should be disabled in the page."
+                        }
+                    ]
+                },
+                {
+                    "name": "setGeolocationOverride",
+                    "description": "Overrides the Geolocation Position or Error. Omitting any of the parameters emulates position unavailable.",
+                    "experimental": true,
+                    "parameters": [
+                        {
+                            "name": "latitude",
+                            "type": "number",
+                            "optional": true,
+                            "description": "Mock latitude"
+                        },
+                        {
+                            "name": "longitude",
+                            "type": "number",
+                            "optional": true,
+                            "description": "Mock longitude"
+                        },
+                        {
+                            "name": "accuracy",
+                            "type": "number",
+                            "optional": true,
+                            "description": "Mock accuracy"
+                        }
+                    ]
+                },
+                {
+                    "name": "clearGeolocationOverride",
+                    "description": "Clears the overriden Geolocation Position and Error.",
+                    "experimental": true
+                },
+                {
+                    "name": "setTouchEmulationEnabled",
+                    "parameters": [
+                        {
+                            "name": "enabled",
+                            "type": "boolean",
+                            "description": "Whether the touch event emulation should be enabled."
+                        },
+                        {
+                            "name": "configuration",
+                            "type": "string",
+                            "enum": [
+                                "mobile",
+                                "desktop"
+                            ],
+                            "optional": true,
+                            "description": "Touch/gesture events configuration. Default: current platform."
+                        }
+                    ],
+                    "description": "Toggles mouse event-based touch event emulation."
+                },
+                {
+                    "name": "setEmulatedMedia",
+                    "parameters": [
+                        {
+                            "name": "media",
+                            "type": "string",
+                            "description": "Media type to emulate. Empty string disables the override."
+                        }
+                    ],
+                    "description": "Emulates the given media for CSS media queries."
+                },
+                {
+                    "name": "setCPUThrottlingRate",
+                    "parameters": [
+                        {
+                            "name": "rate",
+                            "type": "number",
+                            "description": "Throttling rate as a slowdown factor (1 is no throttle, 2 is 2x slowdown, etc)."
+                        }
+                    ],
+                    "experimental": true,
+                    "description": "Enables CPU throttling to emulate slow CPUs."
+                },
+                {
+                    "name": "canEmulate",
+                    "description": "Tells whether emulation is supported.",
+                    "returns": [
+                        {
+                            "name": "result",
+                            "type": "boolean",
+                            "description": "True if emulation is supported."
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "name": "setVirtualTimePolicy",
+                    "description": "Turns on virtual time for all frames (replacing real-time with a synthetic time source) and sets the current virtual time policy.  Note this supersedes any previous time budget.",
+                    "parameters": [
+                        {
+                            "name": "policy",
+                            "$ref": "VirtualTimePolicy"
+                        },
+                        {
+                            "name": "budget",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "If set, after this many virtual milliseconds have elapsed virtual time will be paused and a virtualTimeBudgetExpired event is sent."
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "name": "setDefaultBackgroundColorOverride",
+                    "description": "Sets or clears an override of the default background color of the frame. This override is used if the content does not specify one.",
+                    "parameters": [
+                        {
+                            "name": "color",
+                            "$ref": "DOM.RGBA",
+                            "optional": true,
+                            "description": "RGBA of the default background color. If not specified, any existing override will be cleared."
+                        }
+                    ],
+                    "experimental": true
+                }
+            ],
+            "events": [
+                {
+                    "name": "virtualTimeBudgetExpired",
+                    "experimental": true,
+                    "description": "Notification sent after the virual time budget for the current VirtualTimePolicy has run out."
+                }
+            ]
+        },
+        {
+            "domain": "Security",
+            "description": "Security",
+            "experimental": true,
+            "types": [
+                {
+                    "id": "CertificateId",
+                    "type": "integer",
+                    "description": "An internal certificate ID value."
+                },
+                {
+                    "id": "SecurityState",
+                    "type": "string",
+                    "enum": [
+                        "unknown",
+                        "neutral",
+                        "insecure",
+                        "warning",
+                        "secure",
+                        "info"
+                    ],
+                    "description": "The security level of a page or resource."
+                },
+                {
+                    "id": "SecurityStateExplanation",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "securityState",
+                            "$ref": "SecurityState",
+                            "description": "Security state representing the severity of the factor being explained."
+                        },
+                        {
+                            "name": "summary",
+                            "type": "string",
+                            "description": "Short phrase describing the type of factor."
+                        },
+                        {
+                            "name": "description",
+                            "type": "string",
+                            "description": "Full text explanation of the factor."
+                        },
+                        {
+                            "name": "hasCertificate",
+                            "type": "boolean",
+                            "description": "True if the page has a certificate."
+                        }
+                    ],
+                    "description": "An explanation of an factor contributing to the security state."
+                },
+                {
+                    "id": "InsecureContentStatus",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "ranMixedContent",
+                            "type": "boolean",
+                            "description": "True if the page was loaded over HTTPS and ran mixed (HTTP) content such as scripts."
+                        },
+                        {
+                            "name": "displayedMixedContent",
+                            "type": "boolean",
+                            "description": "True if the page was loaded over HTTPS and displayed mixed (HTTP) content such as images."
+                        },
+                        {
+                            "name": "containedMixedForm",
+                            "type": "boolean",
+                            "description": "True if the page was loaded over HTTPS and contained a form targeting an insecure url."
+                        },
+                        {
+                            "name": "ranContentWithCertErrors",
+                            "type": "boolean",
+                            "description": "True if the page was loaded over HTTPS without certificate errors, and ran content such as scripts that were loaded with certificate errors."
+                        },
+                        {
+                            "name": "displayedContentWithCertErrors",
+                            "type": "boolean",
+                            "description": "True if the page was loaded over HTTPS without certificate errors, and displayed content such as images that were loaded with certificate errors."
+                        },
+                        {
+                            "name": "ranInsecureContentStyle",
+                            "$ref": "SecurityState",
+                            "description": "Security state representing a page that ran insecure content."
+                        },
+                        {
+                            "name": "displayedInsecureContentStyle",
+                            "$ref": "SecurityState",
+                            "description": "Security state representing a page that displayed insecure content."
+                        }
+                    ],
+                    "description": "Information about insecure content on the page."
+                },
+                {
+                    "id": "CertificateErrorAction",
+                    "type": "string",
+                    "enum": [
+                        "continue",
+                        "cancel"
+                    ],
+                    "description": "The action to take when a certificate error occurs. continue will continue processing the request and cancel will cancel the request."
+                }
+            ],
+            "commands": [
+                {
+                    "name": "enable",
+                    "description": "Enables tracking security state changes."
+                },
+                {
+                    "name": "disable",
+                    "description": "Disables tracking security state changes."
+                },
+                {
+                    "name": "showCertificateViewer",
+                    "description": "Displays native dialog with the certificate details."
+                },
+                {
+                    "name": "handleCertificateError",
+                    "description": "Handles a certificate error that fired a certificateError event.",
+                    "parameters": [
+                        {
+                            "name": "eventId",
+                            "type": "integer",
+                            "description": "The ID of the event."
+                        },
+                        {
+                            "name": "action",
+                            "$ref": "CertificateErrorAction",
+                            "description": "The action to take on the certificate error."
+                        }
+                    ]
+                },
+                {
+                    "name": "setOverrideCertificateErrors",
+                    "description": "Enable/disable overriding certificate errors. If enabled, all certificate error events need to be handled by the DevTools client and should be answered with handleCertificateError commands.",
+                    "parameters": [
+                        {
+                            "name": "override",
+                            "type": "boolean",
+                            "description": "If true, certificate errors will be overridden."
+                        }
+                    ]
+                }
+            ],
+            "events": [
+                {
+                    "name": "securityStateChanged",
+                    "description": "The security state of the page changed.",
+                    "parameters": [
+                        {
+                            "name": "securityState",
+                            "$ref": "SecurityState",
+                            "description": "Security state."
+                        },
+                        {
+                            "name": "schemeIsCryptographic",
+                            "type": "boolean",
+                            "description": "True if the page was loaded over cryptographic transport such as HTTPS."
+                        },
+                        {
+                            "name": "explanations",
+                            "type": "array",
+                            "items": {
+                                "$ref": "SecurityStateExplanation"
+                            },
+                            "description": "List of explanations for the security state. If the overall security state is `insecure` or `warning`, at least one corresponding explanation should be included."
+                        },
+                        {
+                            "name": "insecureContentStatus",
+                            "$ref": "InsecureContentStatus",
+                            "description": "Information about insecure content on the page."
+                        },
+                        {
+                            "name": "summary",
+                            "type": "string",
+                            "description": "Overrides user-visible description of the state.",
+                            "optional": true
+                        }
+                    ]
+                },
+                {
+                    "name": "certificateError",
+                    "description": "There is a certificate error. If overriding certificate errors is enabled, then it should be handled with the handleCertificateError command. Note: this event does not fire if the certificate error has been allowed internally.",
+                    "parameters": [
+                        {
+                            "name": "eventId",
+                            "type": "integer",
+                            "description": "The ID of the event."
+                        },
+                        {
+                            "name": "errorType",
+                            "type": "string",
+                            "description": "The type of the error."
+                        },
+                        {
+                            "name": "requestURL",
+                            "type": "string",
+                            "description": "The url that was requested."
+                        }
+                    ]
+                }
+            ]
+        },
+        {
+            "domain": "Network",
+            "description": "Network domain allows tracking network activities of the page. It exposes information about http, file, data and other requests and responses, their headers, bodies, timing, etc.",
+            "dependencies": [
+                "Runtime",
+                "Security"
+            ],
+            "types": [
+                {
+                    "id": "LoaderId",
+                    "type": "string",
+                    "description": "Unique loader identifier."
+                },
+                {
+                    "id": "RequestId",
+                    "type": "string",
+                    "description": "Unique request identifier."
+                },
+                {
+                    "id": "InterceptionId",
+                    "type": "string",
+                    "description": "Unique intercepted request identifier."
+                },
+                {
+                    "id": "ErrorReason",
+                    "type": "string",
+                    "enum": [
+                        "Failed",
+                        "Aborted",
+                        "TimedOut",
+                        "AccessDenied",
+                        "ConnectionClosed",
+                        "ConnectionReset",
+                        "ConnectionRefused",
+                        "ConnectionAborted",
+                        "ConnectionFailed",
+                        "NameNotResolved",
+                        "InternetDisconnected",
+                        "AddressUnreachable"
+                    ],
+                    "description": "Network level fetch failure reason."
+                },
+                {
+                    "id": "Timestamp",
+                    "type": "number",
+                    "description": "Number of seconds since epoch."
+                },
+                {
+                    "id": "Headers",
+                    "type": "object",
+                    "description": "Request / response headers as keys / values of JSON object."
+                },
+                {
+                    "id": "ConnectionType",
+                    "type": "string",
+                    "enum": [
+                        "none",
+                        "cellular2g",
+                        "cellular3g",
+                        "cellular4g",
+                        "bluetooth",
+                        "ethernet",
+                        "wifi",
+                        "wimax",
+                        "other"
+                    ],
+                    "description": "Loading priority of a resource request."
+                },
+                {
+                    "id": "CookieSameSite",
+                    "type": "string",
+                    "enum": [
+                        "Strict",
+                        "Lax"
+                    ],
+                    "description": "Represents the cookie's 'SameSite' status: https://tools.ietf.org/html/draft-west-first-party-cookies"
+                },
+                {
+                    "id": "ResourceTiming",
+                    "type": "object",
+                    "description": "Timing information for the request.",
+                    "properties": [
+                        {
+                            "name": "requestTime",
+                            "type": "number",
+                            "description": "Timing's requestTime is a baseline in seconds, while the other numbers are ticks in milliseconds relatively to this requestTime."
+                        },
+                        {
+                            "name": "proxyStart",
+                            "type": "number",
+                            "description": "Started resolving proxy."
+                        },
+                        {
+                            "name": "proxyEnd",
+                            "type": "number",
+                            "description": "Finished resolving proxy."
+                        },
+                        {
+                            "name": "dnsStart",
+                            "type": "number",
+                            "description": "Started DNS address resolve."
+                        },
+                        {
+                            "name": "dnsEnd",
+                            "type": "number",
+                            "description": "Finished DNS address resolve."
+                        },
+                        {
+                            "name": "connectStart",
+                            "type": "number",
+                            "description": "Started connecting to the remote host."
+                        },
+                        {
+                            "name": "connectEnd",
+                            "type": "number",
+                            "description": "Connected to the remote host."
+                        },
+                        {
+                            "name": "sslStart",
+                            "type": "number",
+                            "description": "Started SSL handshake."
+                        },
+                        {
+                            "name": "sslEnd",
+                            "type": "number",
+                            "description": "Finished SSL handshake."
+                        },
+                        {
+                            "name": "workerStart",
+                            "type": "number",
+                            "description": "Started running ServiceWorker.",
+                            "experimental": true
+                        },
+                        {
+                            "name": "workerReady",
+                            "type": "number",
+                            "description": "Finished Starting ServiceWorker.",
+                            "experimental": true
+                        },
+                        {
+                            "name": "sendStart",
+                            "type": "number",
+                            "description": "Started sending request."
+                        },
+                        {
+                            "name": "sendEnd",
+                            "type": "number",
+                            "description": "Finished sending request."
+                        },
+                        {
+                            "name": "pushStart",
+                            "type": "number",
+                            "description": "Time the server started pushing request.",
+                            "experimental": true
+                        },
+                        {
+                            "name": "pushEnd",
+                            "type": "number",
+                            "description": "Time the server finished pushing request.",
+                            "experimental": true
+                        },
+                        {
+                            "name": "receiveHeadersEnd",
+                            "type": "number",
+                            "description": "Finished receiving response headers."
+                        }
+                    ]
+                },
+                {
+                    "id": "ResourcePriority",
+                    "type": "string",
+                    "enum": [
+                        "VeryLow",
+                        "Low",
+                        "Medium",
+                        "High",
+                        "VeryHigh"
+                    ],
+                    "description": "Loading priority of a resource request."
+                },
+                {
+                    "id": "Request",
+                    "type": "object",
+                    "description": "HTTP request data.",
+                    "properties": [
+                        {
+                            "name": "url",
+                            "type": "string",
+                            "description": "Request URL."
+                        },
+                        {
+                            "name": "method",
+                            "type": "string",
+                            "description": "HTTP request method."
+                        },
+                        {
+                            "name": "headers",
+                            "$ref": "Headers",
+                            "description": "HTTP request headers."
+                        },
+                        {
+                            "name": "postData",
+                            "type": "string",
+                            "optional": true,
+                            "description": "HTTP POST request data."
+                        },
+                        {
+                            "name": "mixedContentType",
+                            "optional": true,
+                            "type": "string",
+                            "enum": [
+                                "blockable",
+                                "optionally-blockable",
+                                "none"
+                            ],
+                            "description": "The mixed content status of the request, as defined in http://www.w3.org/TR/mixed-content/"
+                        },
+                        {
+                            "name": "initialPriority",
+                            "$ref": "ResourcePriority",
+                            "description": "Priority of the resource request at the time request is sent."
+                        },
+                        {
+                            "name": "referrerPolicy",
+                            "type": "string",
+                            "enum": [
+                                "unsafe-url",
+                                "no-referrer-when-downgrade",
+                                "no-referrer",
+                                "origin",
+                                "origin-when-cross-origin",
+                                "no-referrer-when-downgrade-origin-when-cross-origin"
+                            ],
+                            "description": "The referrer policy of the request, as defined in https://www.w3.org/TR/referrer-policy/"
+                        },
+                        {
+                            "name": "isLinkPreload",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Whether is loaded via link preload."
+                        }
+                    ]
+                },
+                {
+                    "id": "SignedCertificateTimestamp",
+                    "type": "object",
+                    "description": "Details of a signed certificate timestamp (SCT).",
+                    "properties": [
+                        {
+                            "name": "status",
+                            "type": "string",
+                            "description": "Validation status."
+                        },
+                        {
+                            "name": "origin",
+                            "type": "string",
+                            "description": "Origin."
+                        },
+                        {
+                            "name": "logDescription",
+                            "type": "string",
+                            "description": "Log name / description."
+                        },
+                        {
+                            "name": "logId",
+                            "type": "string",
+                            "description": "Log ID."
+                        },
+                        {
+                            "name": "timestamp",
+                            "$ref": "Timestamp",
+                            "description": "Issuance date."
+                        },
+                        {
+                            "name": "hashAlgorithm",
+                            "type": "string",
+                            "description": "Hash algorithm."
+                        },
+                        {
+                            "name": "signatureAlgorithm",
+                            "type": "string",
+                            "description": "Signature algorithm."
+                        },
+                        {
+                            "name": "signatureData",
+                            "type": "string",
+                            "description": "Signature data."
+                        }
+                    ]
+                },
+                {
+                    "id": "SecurityDetails",
+                    "type": "object",
+                    "description": "Security details about a request.",
+                    "properties": [
+                        {
+                            "name": "protocol",
+                            "type": "string",
+                            "description": "Protocol name (e.g. \"TLS 1.2\" or \"QUIC\")."
+                        },
+                        {
+                            "name": "keyExchange",
+                            "type": "string",
+                            "description": "Key Exchange used by the connection, or the empty string if not applicable."
+                        },
+                        {
+                            "name": "keyExchangeGroup",
+                            "type": "string",
+                            "optional": true,
+                            "description": "(EC)DH group used by the connection, if applicable."
+                        },
+                        {
+                            "name": "cipher",
+                            "type": "string",
+                            "description": "Cipher name."
+                        },
+                        {
+                            "name": "mac",
+                            "type": "string",
+                            "optional": true,
+                            "description": "TLS MAC. Note that AEAD ciphers do not have separate MACs."
+                        },
+                        {
+                            "name": "certificateId",
+                            "$ref": "Security.CertificateId",
+                            "description": "Certificate ID value."
+                        },
+                        {
+                            "name": "subjectName",
+                            "type": "string",
+                            "description": "Certificate subject name."
+                        },
+                        {
+                            "name": "sanList",
+                            "type": "array",
+                            "items": {
+                                "type": "string"
+                            },
+                            "description": "Subject Alternative Name (SAN) DNS names and IP addresses."
+                        },
+                        {
+                            "name": "issuer",
+                            "type": "string",
+                            "description": "Name of the issuing CA."
+                        },
+                        {
+                            "name": "validFrom",
+                            "$ref": "Timestamp",
+                            "description": "Certificate valid from date."
+                        },
+                        {
+                            "name": "validTo",
+                            "$ref": "Timestamp",
+                            "description": "Certificate valid to (expiration) date"
+                        },
+                        {
+                            "name": "signedCertificateTimestampList",
+                            "type": "array",
+                            "items": {
+                                "$ref": "SignedCertificateTimestamp"
+                            },
+                            "description": "List of signed certificate timestamps (SCTs)."
+                        }
+                    ]
+                },
+                {
+                    "id": "BlockedReason",
+                    "type": "string",
+                    "description": "The reason why request was blocked.",
+                    "enum": [
+                        "csp",
+                        "mixed-content",
+                        "origin",
+                        "inspector",
+                        "subresource-filter",
+                        "other"
+                    ],
+                    "experimental": true
+                },
+                {
+                    "id": "Response",
+                    "type": "object",
+                    "description": "HTTP response data.",
+                    "properties": [
+                        {
+                            "name": "url",
+                            "type": "string",
+                            "description": "Response URL. This URL can be different from CachedResource.url in case of redirect."
+                        },
+                        {
+                            "name": "status",
+                            "type": "number",
+                            "description": "HTTP response status code."
+                        },
+                        {
+                            "name": "statusText",
+                            "type": "string",
+                            "description": "HTTP response status text."
+                        },
+                        {
+                            "name": "headers",
+                            "$ref": "Headers",
+                            "description": "HTTP response headers."
+                        },
+                        {
+                            "name": "headersText",
+                            "type": "string",
+                            "optional": true,
+                            "description": "HTTP response headers text."
+                        },
+                        {
+                            "name": "mimeType",
+                            "type": "string",
+                            "description": "Resource mimeType as determined by the browser."
+                        },
+                        {
+                            "name": "requestHeaders",
+                            "$ref": "Headers",
+                            "optional": true,
+                            "description": "Refined HTTP request headers that were actually transmitted over the network."
+                        },
+                        {
+                            "name": "requestHeadersText",
+                            "type": "string",
+                            "optional": true,
+                            "description": "HTTP request headers text."
+                        },
+                        {
+                            "name": "connectionReused",
+                            "type": "boolean",
+                            "description": "Specifies whether physical connection was actually reused for this request."
+                        },
+                        {
+                            "name": "connectionId",
+                            "type": "number",
+                            "description": "Physical connection id that was actually used for this request."
+                        },
+                        {
+                            "name": "remoteIPAddress",
+                            "type": "string",
+                            "optional": true,
+                            "experimental": true,
+                            "description": "Remote IP address."
+                        },
+                        {
+                            "name": "remotePort",
+                            "type": "integer",
+                            "optional": true,
+                            "experimental": true,
+                            "description": "Remote port."
+                        },
+                        {
+                            "name": "fromDiskCache",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Specifies that the request was served from the disk cache."
+                        },
+                        {
+                            "name": "fromServiceWorker",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Specifies that the request was served from the ServiceWorker."
+                        },
+                        {
+                            "name": "encodedDataLength",
+                            "type": "number",
+                            "optional": false,
+                            "description": "Total number of bytes received for this request so far."
+                        },
+                        {
+                            "name": "timing",
+                            "$ref": "ResourceTiming",
+                            "optional": true,
+                            "description": "Timing information for the given request."
+                        },
+                        {
+                            "name": "protocol",
+                            "type": "string",
+                            "optional": true,
+                            "description": "Protocol used to fetch this request."
+                        },
+                        {
+                            "name": "securityState",
+                            "$ref": "Security.SecurityState",
+                            "description": "Security state of the request resource."
+                        },
+                        {
+                            "name": "securityDetails",
+                            "$ref": "SecurityDetails",
+                            "optional": true,
+                            "description": "Security details for the request."
+                        }
+                    ]
+                },
+                {
+                    "id": "WebSocketRequest",
+                    "type": "object",
+                    "description": "WebSocket request data.",
+                    "experimental": true,
+                    "properties": [
+                        {
+                            "name": "headers",
+                            "$ref": "Headers",
+                            "description": "HTTP request headers."
+                        }
+                    ]
+                },
+                {
+                    "id": "WebSocketResponse",
+                    "type": "object",
+                    "description": "WebSocket response data.",
+                    "experimental": true,
+                    "properties": [
+                        {
+                            "name": "status",
+                            "type": "number",
+                            "description": "HTTP response status code."
+                        },
+                        {
+                            "name": "statusText",
+                            "type": "string",
+                            "description": "HTTP response status text."
+                        },
+                        {
+                            "name": "headers",
+                            "$ref": "Headers",
+                            "description": "HTTP response headers."
+                        },
+                        {
+                            "name": "headersText",
+                            "type": "string",
+                            "optional": true,
+                            "description": "HTTP response headers text."
+                        },
+                        {
+                            "name": "requestHeaders",
+                            "$ref": "Headers",
+                            "optional": true,
+                            "description": "HTTP request headers."
+                        },
+                        {
+                            "name": "requestHeadersText",
+                            "type": "string",
+                            "optional": true,
+                            "description": "HTTP request headers text."
+                        }
+                    ]
+                },
+                {
+                    "id": "WebSocketFrame",
+                    "type": "object",
+                    "description": "WebSocket frame data.",
+                    "experimental": true,
+                    "properties": [
+                        {
+                            "name": "opcode",
+                            "type": "number",
+                            "description": "WebSocket frame opcode."
+                        },
+                        {
+                            "name": "mask",
+                            "type": "boolean",
+                            "description": "WebSocke frame mask."
+                        },
+                        {
+                            "name": "payloadData",
+                            "type": "string",
+                            "description": "WebSocke frame payload data."
+                        }
+                    ]
+                },
+                {
+                    "id": "CachedResource",
+                    "type": "object",
+                    "description": "Information about the cached resource.",
+                    "properties": [
+                        {
+                            "name": "url",
+                            "type": "string",
+                            "description": "Resource URL. This is the url of the original network request."
+                        },
+                        {
+                            "name": "type",
+                            "$ref": "Page.ResourceType",
+                            "description": "Type of this resource."
+                        },
+                        {
+                            "name": "response",
+                            "$ref": "Response",
+                            "optional": true,
+                            "description": "Cached response data."
+                        },
+                        {
+                            "name": "bodySize",
+                            "type": "number",
+                            "description": "Cached response body size."
+                        }
+                    ]
+                },
+                {
+                    "id": "Initiator",
+                    "type": "object",
+                    "description": "Information about the request initiator.",
+                    "properties": [
+                        {
+                            "name": "type",
+                            "type": "string",
+                            "enum": [
+                                "parser",
+                                "script",
+                                "preload",
+                                "other"
+                            ],
+                            "description": "Type of this initiator."
+                        },
+                        {
+                            "name": "stack",
+                            "$ref": "Runtime.StackTrace",
+                            "optional": true,
+                            "description": "Initiator JavaScript stack trace, set for Script only."
+                        },
+                        {
+                            "name": "url",
+                            "type": "string",
+                            "optional": true,
+                            "description": "Initiator URL, set for Parser type only."
+                        },
+                        {
+                            "name": "lineNumber",
+                            "type": "number",
+                            "optional": true,
+                            "description": "Initiator line number, set for Parser type only (0-based)."
+                        }
+                    ]
+                },
+                {
+                    "id": "Cookie",
+                    "type": "object",
+                    "description": "Cookie object",
+                    "properties": [
+                        {
+                            "name": "name",
+                            "type": "string",
+                            "description": "Cookie name."
+                        },
+                        {
+                            "name": "value",
+                            "type": "string",
+                            "description": "Cookie value."
+                        },
+                        {
+                            "name": "domain",
+                            "type": "string",
+                            "description": "Cookie domain."
+                        },
+                        {
+                            "name": "path",
+                            "type": "string",
+                            "description": "Cookie path."
+                        },
+                        {
+                            "name": "expires",
+                            "type": "number",
+                            "description": "Cookie expiration date as the number of seconds since the UNIX epoch."
+                        },
+                        {
+                            "name": "size",
+                            "type": "integer",
+                            "description": "Cookie size."
+                        },
+                        {
+                            "name": "httpOnly",
+                            "type": "boolean",
+                            "description": "True if cookie is http-only."
+                        },
+                        {
+                            "name": "secure",
+                            "type": "boolean",
+                            "description": "True if cookie is secure."
+                        },
+                        {
+                            "name": "session",
+                            "type": "boolean",
+                            "description": "True in case of session cookie."
+                        },
+                        {
+                            "name": "sameSite",
+                            "$ref": "CookieSameSite",
+                            "optional": true,
+                            "description": "Cookie SameSite type."
+                        }
+                    ],
+                    "experimental": true
+                }
+            ],
+            "commands": [
+                {
+                    "name": "enable",
+                    "description": "Enables network tracking, network events will now be delivered to the client.",
+                    "parameters": [
+                        {
+                            "name": "maxTotalBufferSize",
+                            "type": "integer",
+                            "optional": true,
+                            "experimental": true,
+                            "description": "Buffer size in bytes to use when preserving network payloads (XHRs, etc)."
+                        },
+                        {
+                            "name": "maxResourceBufferSize",
+                            "type": "integer",
+                            "optional": true,
+                            "experimental": true,
+                            "description": "Per-resource buffer size in bytes to use when preserving network payloads (XHRs, etc)."
+                        }
+                    ]
+                },
+                {
+                    "name": "disable",
+                    "description": "Disables network tracking, prevents network events from being sent to the client."
+                },
+                {
+                    "name": "setUserAgentOverride",
+                    "description": "Allows overriding user agent with the given string.",
+                    "parameters": [
+                        {
+                            "name": "userAgent",
+                            "type": "string",
+                            "description": "User agent to use."
+                        }
+                    ]
+                },
+                {
+                    "name": "setExtraHTTPHeaders",
+                    "description": "Specifies whether to always send extra HTTP headers with the requests from this page.",
+                    "parameters": [
+                        {
+                            "name": "headers",
+                            "$ref": "Headers",
+                            "description": "Map with extra HTTP headers."
+                        }
+                    ]
+                },
+                {
+                    "name": "getResponseBody",
+                    "description": "Returns content served for the given request.",
+                    "parameters": [
+                        {
+                            "name": "requestId",
+                            "$ref": "RequestId",
+                            "description": "Identifier of the network request to get content for."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "body",
+                            "type": "string",
+                            "description": "Response body."
+                        },
+                        {
+                            "name": "base64Encoded",
+                            "type": "boolean",
+                            "description": "True, if content was sent as base64."
+                        }
+                    ]
+                },
+                {
+                    "name": "setBlockedURLs",
+                    "description": "Blocks URLs from loading.",
+                    "parameters": [
+                        {
+                            "name": "urls",
+                            "type": "array",
+                            "items": {
+                                "type": "string"
+                            },
+                            "description": "URL patterns to block. Wildcards ('*') are allowed."
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "name": "replayXHR",
+                    "description": "This method sends a new XMLHttpRequest which is identical to the original one. The following parameters should be identical: method, url, async, request body, extra headers, withCredentials attribute, user, password.",
+                    "parameters": [
+                        {
+                            "name": "requestId",
+                            "$ref": "RequestId",
+                            "description": "Identifier of XHR to replay."
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "name": "canClearBrowserCache",
+                    "description": "Tells whether clearing browser cache is supported.",
+                    "returns": [
+                        {
+                            "name": "result",
+                            "type": "boolean",
+                            "description": "True if browser cache can be cleared."
+                        }
+                    ]
+                },
+                {
+                    "name": "clearBrowserCache",
+                    "description": "Clears browser cache."
+                },
+                {
+                    "name": "canClearBrowserCookies",
+                    "description": "Tells whether clearing browser cookies is supported.",
+                    "returns": [
+                        {
+                            "name": "result",
+                            "type": "boolean",
+                            "description": "True if browser cookies can be cleared."
+                        }
+                    ]
+                },
+                {
+                    "name": "clearBrowserCookies",
+                    "description": "Clears browser cookies."
+                },
+                {
+                    "name": "getCookies",
+                    "parameters": [
+                        {
+                            "name": "urls",
+                            "type": "array",
+                            "items": {
+                                "type": "string"
+                            },
+                            "optional": true,
+                            "description": "The list of URLs for which applicable cookies will be fetched"
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "cookies",
+                            "type": "array",
+                            "items": {
+                                "$ref": "Cookie"
+                            },
+                            "description": "Array of cookie objects."
+                        }
+                    ],
+                    "description": "Returns all browser cookies for the current URL. Depending on the backend support, will return detailed cookie information in the <code>cookies</code> field.",
+                    "experimental": true
+                },
+                {
+                    "name": "getAllCookies",
+                    "returns": [
+                        {
+                            "name": "cookies",
+                            "type": "array",
+                            "items": {
+                                "$ref": "Cookie"
+                            },
+                            "description": "Array of cookie objects."
+                        }
+                    ],
+                    "description": "Returns all browser cookies. Depending on the backend support, will return detailed cookie information in the <code>cookies</code> field.",
+                    "experimental": true
+                },
+                {
+                    "name": "deleteCookie",
+                    "parameters": [
+                        {
+                            "name": "cookieName",
+                            "type": "string",
+                            "description": "Name of the cookie to remove."
+                        },
+                        {
+                            "name": "url",
+                            "type": "string",
+                            "description": "URL to match cooke domain and path."
+                        }
+                    ],
+                    "description": "Deletes browser cookie with given name, domain and path.",
+                    "experimental": true
+                },
+                {
+                    "name": "setCookie",
+                    "parameters": [
+                        {
+                            "name": "url",
+                            "type": "string",
+                            "description": "The request-URI to associate with the setting of the cookie. This value can affect the default domain and path values of the created cookie."
+                        },
+                        {
+                            "name": "name",
+                            "type": "string",
+                            "description": "The name of the cookie."
+                        },
+                        {
+                            "name": "value",
+                            "type": "string",
+                            "description": "The value of the cookie."
+                        },
+                        {
+                            "name": "domain",
+                            "type": "string",
+                            "optional": true,
+                            "description": "If omitted, the cookie becomes a host-only cookie."
+                        },
+                        {
+                            "name": "path",
+                            "type": "string",
+                            "optional": true,
+                            "description": "Defaults to the path portion of the url parameter."
+                        },
+                        {
+                            "name": "secure",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Defaults ot false."
+                        },
+                        {
+                            "name": "httpOnly",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Defaults to false."
+                        },
+                        {
+                            "name": "sameSite",
+                            "$ref": "CookieSameSite",
+                            "optional": true,
+                            "description": "Defaults to browser default behavior."
+                        },
+                        {
+                            "name": "expirationDate",
+                            "$ref": "Timestamp",
+                            "optional": true,
+                            "description": "If omitted, the cookie becomes a session cookie."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "success",
+                            "type": "boolean",
+                            "description": "True if successfully set cookie."
+                        }
+                    ],
+                    "description": "Sets a cookie with the given cookie data; may overwrite equivalent cookies if they exist.",
+                    "experimental": true
+                },
+                {
+                    "name": "canEmulateNetworkConditions",
+                    "description": "Tells whether emulation of network conditions is supported.",
+                    "returns": [
+                        {
+                            "name": "result",
+                            "type": "boolean",
+                            "description": "True if emulation of network conditions is supported."
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "name": "emulateNetworkConditions",
+                    "description": "Activates emulation of network conditions.",
+                    "parameters": [
+                        {
+                            "name": "offline",
+                            "type": "boolean",
+                            "description": "True to emulate internet disconnection."
+                        },
+                        {
+                            "name": "latency",
+                            "type": "number",
+                            "description": "Additional latency (ms)."
+                        },
+                        {
+                            "name": "downloadThroughput",
+                            "type": "number",
+                            "description": "Maximal aggregated download throughput."
+                        },
+                        {
+                            "name": "uploadThroughput",
+                            "type": "number",
+                            "description": "Maximal aggregated upload throughput."
+                        },
+                        {
+                            "name": "connectionType",
+                            "$ref": "ConnectionType",
+                            "optional": true,
+                            "description": "Connection type if known."
+                        }
+                    ]
+                },
+                {
+                    "name": "setCacheDisabled",
+                    "parameters": [
+                        {
+                            "name": "cacheDisabled",
+                            "type": "boolean",
+                            "description": "Cache disabled state."
+                        }
+                    ],
+                    "description": "Toggles ignoring cache for each request. If <code>true</code>, cache will not be used."
+                },
+                {
+                    "name": "setBypassServiceWorker",
+                    "parameters": [
+                        {
+                            "name": "bypass",
+                            "type": "boolean",
+                            "description": "Bypass service worker and load from network."
+                        }
+                    ],
+                    "experimental": true,
+                    "description": "Toggles ignoring of service worker for each request."
+                },
+                {
+                    "name": "setDataSizeLimitsForTest",
+                    "parameters": [
+                        {
+                            "name": "maxTotalSize",
+                            "type": "integer",
+                            "description": "Maximum total buffer size."
+                        },
+                        {
+                            "name": "maxResourceSize",
+                            "type": "integer",
+                            "description": "Maximum per-resource size."
+                        }
+                    ],
+                    "description": "For testing.",
+                    "experimental": true
+                },
+                {
+                    "name": "getCertificate",
+                    "description": "Returns the DER-encoded certificate.",
+                    "parameters": [
+                        {
+                            "name": "origin",
+                            "type": "string",
+                            "description": "Origin to get certificate for."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "tableNames",
+                            "type": "array",
+                            "items": {
+                                "type": "string"
+                            }
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "name": "enableRequestInterception",
+                    "parameters": [
+                        {
+                            "name": "enabled",
+                            "type": "boolean",
+                            "description": "Whether or not HTTP requests should be intercepted and Network.requestIntercepted events sent."
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "name": "continueInterceptedRequest",
+                    "description": "Response to Network.requestIntercepted which either modifies the request to continue with any modifications, or blocks it, or completes it with the provided response bytes. If a network fetch occurs as a result which encounters a redirect an additional Network.requestIntercepted event will be sent with the same InterceptionId.",
+                    "parameters": [
+                        {
+                            "name": "interceptionId",
+                            "$ref": "InterceptionId"
+                        },
+                        {
+                            "name": "errorReason",
+                            "$ref": "ErrorReason",
+                            "optional": true,
+                            "description": "If set this causes the request to fail with the given reason."
+                        },
+                        {
+                            "name": "rawResponse",
+                            "type": "string",
+                            "optional": true,
+                            "description": "If set the requests completes using with the provided base64 encoded raw response, including HTTP status line and headers etc..."
+                        },
+                        {
+                            "name": "url",
+                            "type": "string",
+                            "optional": true,
+                            "description": "If set the request url will be modified in a way that's not observable by page."
+                        },
+                        {
+                            "name": "method",
+                            "type": "string",
+                            "optional": true,
+                            "description": "If set this allows the request method to be overridden."
+                        },
+                        {
+                            "name": "postData",
+                            "type": "string",
+                            "optional": true,
+                            "description": "If set this allows postData to be set."
+                        },
+                        {
+                            "name": "headers",
+                            "$ref": "Headers",
+                            "optional": true,
+                            "description": "If set this allows the request headers to be changed."
+                        }
+                    ],
+                    "experimental": true
+                }
+            ],
+            "events": [
+                {
+                    "name": "resourceChangedPriority",
+                    "description": "Fired when resource loading priority is changed",
+                    "parameters": [
+                        {
+                            "name": "requestId",
+                            "$ref": "RequestId",
+                            "description": "Request identifier."
+                        },
+                        {
+                            "name": "newPriority",
+                            "$ref": "ResourcePriority",
+                            "description": "New priority"
+                        },
+                        {
+                            "name": "timestamp",
+                            "$ref": "Timestamp",
+                            "description": "Timestamp."
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "name": "requestWillBeSent",
+                    "description": "Fired when page is about to send HTTP request.",
+                    "parameters": [
+                        {
+                            "name": "requestId",
+                            "$ref": "RequestId",
+                            "description": "Request identifier."
+                        },
+                        {
+                            "name": "frameId",
+                            "$ref": "Page.FrameId",
+                            "description": "Frame identifier.",
+                            "experimental": true
+                        },
+                        {
+                            "name": "loaderId",
+                            "$ref": "LoaderId",
+                            "description": "Loader identifier."
+                        },
+                        {
+                            "name": "documentURL",
+                            "type": "string",
+                            "description": "URL of the document this request is loaded for."
+                        },
+                        {
+                            "name": "request",
+                            "$ref": "Request",
+                            "description": "Request data."
+                        },
+                        {
+                            "name": "timestamp",
+                            "$ref": "Timestamp",
+                            "description": "Timestamp."
+                        },
+                        {
+                            "name": "wallTime",
+                            "$ref": "Timestamp",
+                            "experimental": true,
+                            "description": "UTC Timestamp."
+                        },
+                        {
+                            "name": "initiator",
+                            "$ref": "Initiator",
+                            "description": "Request initiator."
+                        },
+                        {
+                            "name": "redirectResponse",
+                            "optional": true,
+                            "$ref": "Response",
+                            "description": "Redirect response data."
+                        },
+                        {
+                            "name": "type",
+                            "$ref": "Page.ResourceType",
+                            "optional": true,
+                            "experimental": true,
+                            "description": "Type of this resource."
+                        }
+                    ]
+                },
+                {
+                    "name": "requestServedFromCache",
+                    "description": "Fired if request ended up loading from cache.",
+                    "parameters": [
+                        {
+                            "name": "requestId",
+                            "$ref": "RequestId",
+                            "description": "Request identifier."
+                        }
+                    ]
+                },
+                {
+                    "name": "responseReceived",
+                    "description": "Fired when HTTP response is available.",
+                    "parameters": [
+                        {
+                            "name": "requestId",
+                            "$ref": "RequestId",
+                            "description": "Request identifier."
+                        },
+                        {
+                            "name": "frameId",
+                            "$ref": "Page.FrameId",
+                            "description": "Frame identifier.",
+                            "experimental": true
+                        },
+                        {
+                            "name": "loaderId",
+                            "$ref": "LoaderId",
+                            "description": "Loader identifier."
+                        },
+                        {
+                            "name": "timestamp",
+                            "$ref": "Timestamp",
+                            "description": "Timestamp."
+                        },
+                        {
+                            "name": "type",
+                            "$ref": "Page.ResourceType",
+                            "description": "Resource type."
+                        },
+                        {
+                            "name": "response",
+                            "$ref": "Response",
+                            "description": "Response data."
+                        }
+                    ]
+                },
+                {
+                    "name": "dataReceived",
+                    "description": "Fired when data chunk was received over the network.",
+                    "parameters": [
+                        {
+                            "name": "requestId",
+                            "$ref": "RequestId",
+                            "description": "Request identifier."
+                        },
+                        {
+                            "name": "timestamp",
+                            "$ref": "Timestamp",
+                            "description": "Timestamp."
+                        },
+                        {
+                            "name": "dataLength",
+                            "type": "integer",
+                            "description": "Data chunk length."
+                        },
+                        {
+                            "name": "encodedDataLength",
+                            "type": "integer",
+                            "description": "Actual bytes received (might be less than dataLength for compressed encodings)."
+                        }
+                    ]
+                },
+                {
+                    "name": "loadingFinished",
+                    "description": "Fired when HTTP request has finished loading.",
+                    "parameters": [
+                        {
+                            "name": "requestId",
+                            "$ref": "RequestId",
+                            "description": "Request identifier."
+                        },
+                        {
+                            "name": "timestamp",
+                            "$ref": "Timestamp",
+                            "description": "Timestamp."
+                        },
+                        {
+                            "name": "encodedDataLength",
+                            "type": "number",
+                            "description": "Total number of bytes received for this request."
+                        }
+                    ]
+                },
+                {
+                    "name": "loadingFailed",
+                    "description": "Fired when HTTP request has failed to load.",
+                    "parameters": [
+                        {
+                            "name": "requestId",
+                            "$ref": "RequestId",
+                            "description": "Request identifier."
+                        },
+                        {
+                            "name": "timestamp",
+                            "$ref": "Timestamp",
+                            "description": "Timestamp."
+                        },
+                        {
+                            "name": "type",
+                            "$ref": "Page.ResourceType",
+                            "description": "Resource type."
+                        },
+                        {
+                            "name": "errorText",
+                            "type": "string",
+                            "description": "User friendly error message."
+                        },
+                        {
+                            "name": "canceled",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "True if loading was canceled."
+                        },
+                        {
+                            "name": "blockedReason",
+                            "$ref": "BlockedReason",
+                            "optional": true,
+                            "description": "The reason why loading was blocked, if any.",
+                            "experimental": true
+                        }
+                    ]
+                },
+                {
+                    "name": "webSocketWillSendHandshakeRequest",
+                    "description": "Fired when WebSocket is about to initiate handshake.",
+                    "parameters": [
+                        {
+                            "name": "requestId",
+                            "$ref": "RequestId",
+                            "description": "Request identifier."
+                        },
+                        {
+                            "name": "timestamp",
+                            "$ref": "Timestamp",
+                            "description": "Timestamp."
+                        },
+                        {
+                            "name": "wallTime",
+                            "$ref": "Timestamp",
+                            "experimental": true,
+                            "description": "UTC Timestamp."
+                        },
+                        {
+                            "name": "request",
+                            "$ref": "WebSocketRequest",
+                            "description": "WebSocket request data."
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "name": "webSocketHandshakeResponseReceived",
+                    "description": "Fired when WebSocket handshake response becomes available.",
+                    "parameters": [
+                        {
+                            "name": "requestId",
+                            "$ref": "RequestId",
+                            "description": "Request identifier."
+                        },
+                        {
+                            "name": "timestamp",
+                            "$ref": "Timestamp",
+                            "description": "Timestamp."
+                        },
+                        {
+                            "name": "response",
+                            "$ref": "WebSocketResponse",
+                            "description": "WebSocket response data."
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "name": "webSocketCreated",
+                    "description": "Fired upon WebSocket creation.",
+                    "parameters": [
+                        {
+                            "name": "requestId",
+                            "$ref": "RequestId",
+                            "description": "Request identifier."
+                        },
+                        {
+                            "name": "url",
+                            "type": "string",
+                            "description": "WebSocket request URL."
+                        },
+                        {
+                            "name": "initiator",
+                            "$ref": "Initiator",
+                            "optional": true,
+                            "description": "Request initiator."
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "name": "webSocketClosed",
+                    "description": "Fired when WebSocket is closed.",
+                    "parameters": [
+                        {
+                            "name": "requestId",
+                            "$ref": "RequestId",
+                            "description": "Request identifier."
+                        },
+                        {
+                            "name": "timestamp",
+                            "$ref": "Timestamp",
+                            "description": "Timestamp."
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "name": "webSocketFrameReceived",
+                    "description": "Fired when WebSocket frame is received.",
+                    "parameters": [
+                        {
+                            "name": "requestId",
+                            "$ref": "RequestId",
+                            "description": "Request identifier."
+                        },
+                        {
+                            "name": "timestamp",
+                            "$ref": "Timestamp",
+                            "description": "Timestamp."
+                        },
+                        {
+                            "name": "response",
+                            "$ref": "WebSocketFrame",
+                            "description": "WebSocket response data."
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "name": "webSocketFrameError",
+                    "description": "Fired when WebSocket frame error occurs.",
+                    "parameters": [
+                        {
+                            "name": "requestId",
+                            "$ref": "RequestId",
+                            "description": "Request identifier."
+                        },
+                        {
+                            "name": "timestamp",
+                            "$ref": "Timestamp",
+                            "description": "Timestamp."
+                        },
+                        {
+                            "name": "errorMessage",
+                            "type": "string",
+                            "description": "WebSocket frame error message."
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "name": "webSocketFrameSent",
+                    "description": "Fired when WebSocket frame is sent.",
+                    "parameters": [
+                        {
+                            "name": "requestId",
+                            "$ref": "RequestId",
+                            "description": "Request identifier."
+                        },
+                        {
+                            "name": "timestamp",
+                            "$ref": "Timestamp",
+                            "description": "Timestamp."
+                        },
+                        {
+                            "name": "response",
+                            "$ref": "WebSocketFrame",
+                            "description": "WebSocket response data."
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "name": "eventSourceMessageReceived",
+                    "description": "Fired when EventSource message is received.",
+                    "parameters": [
+                        {
+                            "name": "requestId",
+                            "$ref": "RequestId",
+                            "description": "Request identifier."
+                        },
+                        {
+                            "name": "timestamp",
+                            "$ref": "Timestamp",
+                            "description": "Timestamp."
+                        },
+                        {
+                            "name": "eventName",
+                            "type": "string",
+                            "description": "Message type."
+                        },
+                        {
+                            "name": "eventId",
+                            "type": "string",
+                            "description": "Message identifier."
+                        },
+                        {
+                            "name": "data",
+                            "type": "string",
+                            "description": "Message content."
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "name": "requestIntercepted",
+                    "description": "Details of an intercepted HTTP request, which must be either allowed, blocked, modified or mocked.",
+                    "parameters": [
+                        {
+                            "name": "InterceptionId",
+                            "$ref": "InterceptionId",
+                            "description": "Each request the page makes will have a unique id, however if any redirects are encountered while processing that fetch, they will be reported with the same id as the original fetch."
+                        },
+                        {
+                            "name": "request",
+                            "$ref": "Request"
+                        },
+                        {
+                            "name": "redirectHeaders",
+                            "$ref": "Headers",
+                            "optional": true,
+                            "description": "HTTP response headers, only sent if a redirect was intercepted."
+                        },
+                        {
+                            "name": "redirectStatusCode",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "HTTP response code, only sent if a redirect was intercepted."
+                        },
+                        {
+                            "name": "redirectUrl",
+                            "optional": true,
+                            "type": "string",
+                            "description": "Redirect location, only sent if a redirect was intercepted."
+                        }
+                    ],
+                    "experimental": true
+                }
+            ]
+        },
+        {
+            "domain": "Database",
+            "experimental": true,
+            "types": [
+                {
+                    "id": "DatabaseId",
+                    "type": "string",
+                    "description": "Unique identifier of Database object.",
+                    "experimental": true
+                },
+                {
+                    "id": "Database",
+                    "type": "object",
+                    "description": "Database object.",
+                    "experimental": true,
+                    "properties": [
+                        {
+                            "name": "id",
+                            "$ref": "DatabaseId",
+                            "description": "Database ID."
+                        },
+                        {
+                            "name": "domain",
+                            "type": "string",
+                            "description": "Database domain."
+                        },
+                        {
+                            "name": "name",
+                            "type": "string",
+                            "description": "Database name."
+                        },
+                        {
+                            "name": "version",
+                            "type": "string",
+                            "description": "Database version."
+                        }
+                    ]
+                },
+                {
+                    "id": "Error",
+                    "type": "object",
+                    "description": "Database error.",
+                    "properties": [
+                        {
+                            "name": "message",
+                            "type": "string",
+                            "description": "Error message."
+                        },
+                        {
+                            "name": "code",
+                            "type": "integer",
+                            "description": "Error code."
+                        }
+                    ]
+                }
+            ],
+            "commands": [
+                {
+                    "name": "enable",
+                    "description": "Enables database tracking, database events will now be delivered to the client."
+                },
+                {
+                    "name": "disable",
+                    "description": "Disables database tracking, prevents database events from being sent to the client."
+                },
+                {
+                    "name": "getDatabaseTableNames",
+                    "parameters": [
+                        {
+                            "name": "databaseId",
+                            "$ref": "DatabaseId"
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "tableNames",
+                            "type": "array",
+                            "items": {
+                                "type": "string"
+                            }
+                        }
+                    ]
+                },
+                {
+                    "name": "executeSQL",
+                    "parameters": [
+                        {
+                            "name": "databaseId",
+                            "$ref": "DatabaseId"
+                        },
+                        {
+                            "name": "query",
+                            "type": "string"
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "columnNames",
+                            "type": "array",
+                            "optional": true,
+                            "items": {
+                                "type": "string"
+                            }
+                        },
+                        {
+                            "name": "values",
+                            "type": "array",
+                            "optional": true,
+                            "items": {
+                                "type": "any"
+                            }
+                        },
+                        {
+                            "name": "sqlError",
+                            "$ref": "Error",
+                            "optional": true
+                        }
+                    ]
+                }
+            ],
+            "events": [
+                {
+                    "name": "addDatabase",
+                    "parameters": [
+                        {
+                            "name": "database",
+                            "$ref": "Database"
+                        }
+                    ]
+                }
+            ]
+        },
+        {
+            "domain": "IndexedDB",
+            "dependencies": [
+                "Runtime"
+            ],
+            "experimental": true,
+            "types": [
+                {
+                    "id": "DatabaseWithObjectStores",
+                    "type": "object",
+                    "description": "Database with an array of object stores.",
+                    "properties": [
+                        {
+                            "name": "name",
+                            "type": "string",
+                            "description": "Database name."
+                        },
+                        {
+                            "name": "version",
+                            "type": "integer",
+                            "description": "Database version."
+                        },
+                        {
+                            "name": "objectStores",
+                            "type": "array",
+                            "items": {
+                                "$ref": "ObjectStore"
+                            },
+                            "description": "Object stores in this database."
+                        }
+                    ]
+                },
+                {
+                    "id": "ObjectStore",
+                    "type": "object",
+                    "description": "Object store.",
+                    "properties": [
+                        {
+                            "name": "name",
+                            "type": "string",
+                            "description": "Object store name."
+                        },
+                        {
+                            "name": "keyPath",
+                            "$ref": "KeyPath",
+                            "description": "Object store key path."
+                        },
+                        {
+                            "name": "autoIncrement",
+                            "type": "boolean",
+                            "description": "If true, object store has auto increment flag set."
+                        },
+                        {
+                            "name": "indexes",
+                            "type": "array",
+                            "items": {
+                                "$ref": "ObjectStoreIndex"
+                            },
+                            "description": "Indexes in this object store."
+                        }
+                    ]
+                },
+                {
+                    "id": "ObjectStoreIndex",
+                    "type": "object",
+                    "description": "Object store index.",
+                    "properties": [
+                        {
+                            "name": "name",
+                            "type": "string",
+                            "description": "Index name."
+                        },
+                        {
+                            "name": "keyPath",
+                            "$ref": "KeyPath",
+                            "description": "Index key path."
+                        },
+                        {
+                            "name": "unique",
+                            "type": "boolean",
+                            "description": "If true, index is unique."
+                        },
+                        {
+                            "name": "multiEntry",
+                            "type": "boolean",
+                            "description": "If true, index allows multiple entries for a key."
+                        }
+                    ]
+                },
+                {
+                    "id": "Key",
+                    "type": "object",
+                    "description": "Key.",
+                    "properties": [
+                        {
+                            "name": "type",
+                            "type": "string",
+                            "enum": [
+                                "number",
+                                "string",
+                                "date",
+                                "array"
+                            ],
+                            "description": "Key type."
+                        },
+                        {
+                            "name": "number",
+                            "type": "number",
+                            "optional": true,
+                            "description": "Number value."
+                        },
+                        {
+                            "name": "string",
+                            "type": "string",
+                            "optional": true,
+                            "description": "String value."
+                        },
+                        {
+                            "name": "date",
+                            "type": "number",
+                            "optional": true,
+                            "description": "Date value."
+                        },
+                        {
+                            "name": "array",
+                            "type": "array",
+                            "optional": true,
+                            "items": {
+                                "$ref": "Key"
+                            },
+                            "description": "Array value."
+                        }
+                    ]
+                },
+                {
+                    "id": "KeyRange",
+                    "type": "object",
+                    "description": "Key range.",
+                    "properties": [
+                        {
+                            "name": "lower",
+                            "$ref": "Key",
+                            "optional": true,
+                            "description": "Lower bound."
+                        },
+                        {
+                            "name": "upper",
+                            "$ref": "Key",
+                            "optional": true,
+                            "description": "Upper bound."
+                        },
+                        {
+                            "name": "lowerOpen",
+                            "type": "boolean",
+                            "description": "If true lower bound is open."
+                        },
+                        {
+                            "name": "upperOpen",
+                            "type": "boolean",
+                            "description": "If true upper bound is open."
+                        }
+                    ]
+                },
+                {
+                    "id": "DataEntry",
+                    "type": "object",
+                    "description": "Data entry.",
+                    "properties": [
+                        {
+                            "name": "key",
+                            "$ref": "Runtime.RemoteObject",
+                            "description": "Key object."
+                        },
+                        {
+                            "name": "primaryKey",
+                            "$ref": "Runtime.RemoteObject",
+                            "description": "Primary key object."
+                        },
+                        {
+                            "name": "value",
+                            "$ref": "Runtime.RemoteObject",
+                            "description": "Value object."
+                        }
+                    ]
+                },
+                {
+                    "id": "KeyPath",
+                    "type": "object",
+                    "description": "Key path.",
+                    "properties": [
+                        {
+                            "name": "type",
+                            "type": "string",
+                            "enum": [
+                                "null",
+                                "string",
+                                "array"
+                            ],
+                            "description": "Key path type."
+                        },
+                        {
+                            "name": "string",
+                            "type": "string",
+                            "optional": true,
+                            "description": "String value."
+                        },
+                        {
+                            "name": "array",
+                            "type": "array",
+                            "optional": true,
+                            "items": {
+                                "type": "string"
+                            },
+                            "description": "Array value."
+                        }
+                    ]
+                }
+            ],
+            "commands": [
+                {
+                    "name": "enable",
+                    "description": "Enables events from backend."
+                },
+                {
+                    "name": "disable",
+                    "description": "Disables events from backend."
+                },
+                {
+                    "name": "requestDatabaseNames",
+                    "parameters": [
+                        {
+                            "name": "securityOrigin",
+                            "type": "string",
+                            "description": "Security origin."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "databaseNames",
+                            "type": "array",
+                            "items": {
+                                "type": "string"
+                            },
+                            "description": "Database names for origin."
+                        }
+                    ],
+                    "description": "Requests database names for given security origin."
+                },
+                {
+                    "name": "requestDatabase",
+                    "parameters": [
+                        {
+                            "name": "securityOrigin",
+                            "type": "string",
+                            "description": "Security origin."
+                        },
+                        {
+                            "name": "databaseName",
+                            "type": "string",
+                            "description": "Database name."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "databaseWithObjectStores",
+                            "$ref": "DatabaseWithObjectStores",
+                            "description": "Database with an array of object stores."
+                        }
+                    ],
+                    "description": "Requests database with given name in given frame."
+                },
+                {
+                    "name": "requestData",
+                    "parameters": [
+                        {
+                            "name": "securityOrigin",
+                            "type": "string",
+                            "description": "Security origin."
+                        },
+                        {
+                            "name": "databaseName",
+                            "type": "string",
+                            "description": "Database name."
+                        },
+                        {
+                            "name": "objectStoreName",
+                            "type": "string",
+                            "description": "Object store name."
+                        },
+                        {
+                            "name": "indexName",
+                            "type": "string",
+                            "description": "Index name, empty string for object store data requests."
+                        },
+                        {
+                            "name": "skipCount",
+                            "type": "integer",
+                            "description": "Number of records to skip."
+                        },
+                        {
+                            "name": "pageSize",
+                            "type": "integer",
+                            "description": "Number of records to fetch."
+                        },
+                        {
+                            "name": "keyRange",
+                            "$ref": "KeyRange",
+                            "optional": true,
+                            "description": "Key range."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "objectStoreDataEntries",
+                            "type": "array",
+                            "items": {
+                                "$ref": "DataEntry"
+                            },
+                            "description": "Array of object store data entries."
+                        },
+                        {
+                            "name": "hasMore",
+                            "type": "boolean",
+                            "description": "If true, there are more entries to fetch in the given range."
+                        }
+                    ],
+                    "description": "Requests data from object store or index."
+                },
+                {
+                    "name": "clearObjectStore",
+                    "parameters": [
+                        {
+                            "name": "securityOrigin",
+                            "type": "string",
+                            "description": "Security origin."
+                        },
+                        {
+                            "name": "databaseName",
+                            "type": "string",
+                            "description": "Database name."
+                        },
+                        {
+                            "name": "objectStoreName",
+                            "type": "string",
+                            "description": "Object store name."
+                        }
+                    ],
+                    "returns": [],
+                    "description": "Clears all entries from an object store."
+                },
+                {
+                    "name": "deleteDatabase",
+                    "parameters": [
+                        {
+                            "name": "securityOrigin",
+                            "type": "string",
+                            "description": "Security origin."
+                        },
+                        {
+                            "name": "databaseName",
+                            "type": "string",
+                            "description": "Database name."
+                        }
+                    ],
+                    "returns": [],
+                    "description": "Deletes a database."
+                }
+            ]
+        },
+        {
+            "domain": "CacheStorage",
+            "experimental": true,
+            "types": [
+                {
+                    "id": "CacheId",
+                    "type": "string",
+                    "description": "Unique identifier of the Cache object."
+                },
+                {
+                    "id": "DataEntry",
+                    "type": "object",
+                    "description": "Data entry.",
+                    "properties": [
+                        {
+                            "name": "request",
+                            "type": "string",
+                            "description": "Request url spec."
+                        },
+                        {
+                            "name": "response",
+                            "type": "string",
+                            "description": "Response stataus text."
+                        }
+                    ]
+                },
+                {
+                    "id": "Cache",
+                    "type": "object",
+                    "description": "Cache identifier.",
+                    "properties": [
+                        {
+                            "name": "cacheId",
+                            "$ref": "CacheId",
+                            "description": "An opaque unique id of the cache."
+                        },
+                        {
+                            "name": "securityOrigin",
+                            "type": "string",
+                            "description": "Security origin of the cache."
+                        },
+                        {
+                            "name": "cacheName",
+                            "type": "string",
+                            "description": "The name of the cache."
+                        }
+                    ]
+                }
+            ],
+            "commands": [
+                {
+                    "name": "requestCacheNames",
+                    "parameters": [
+                        {
+                            "name": "securityOrigin",
+                            "type": "string",
+                            "description": "Security origin."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "caches",
+                            "type": "array",
+                            "items": {
+                                "$ref": "Cache"
+                            },
+                            "description": "Caches for the security origin."
+                        }
+                    ],
+                    "description": "Requests cache names."
+                },
+                {
+                    "name": "requestEntries",
+                    "parameters": [
+                        {
+                            "name": "cacheId",
+                            "$ref": "CacheId",
+                            "description": "ID of cache to get entries from."
+                        },
+                        {
+                            "name": "skipCount",
+                            "type": "integer",
+                            "description": "Number of records to skip."
+                        },
+                        {
+                            "name": "pageSize",
+                            "type": "integer",
+                            "description": "Number of records to fetch."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "cacheDataEntries",
+                            "type": "array",
+                            "items": {
+                                "$ref": "DataEntry"
+                            },
+                            "description": "Array of object store data entries."
+                        },
+                        {
+                            "name": "hasMore",
+                            "type": "boolean",
+                            "description": "If true, there are more entries to fetch in the given range."
+                        }
+                    ],
+                    "description": "Requests data from cache."
+                },
+                {
+                    "name": "deleteCache",
+                    "parameters": [
+                        {
+                            "name": "cacheId",
+                            "$ref": "CacheId",
+                            "description": "Id of cache for deletion."
+                        }
+                    ],
+                    "description": "Deletes a cache."
+                },
+                {
+                    "name": "deleteEntry",
+                    "parameters": [
+                        {
+                            "name": "cacheId",
+                            "$ref": "CacheId",
+                            "description": "Id of cache where the entry will be deleted."
+                        },
+                        {
+                            "name": "request",
+                            "type": "string",
+                            "description": "URL spec of the request."
+                        }
+                    ],
+                    "description": "Deletes a cache entry."
+                }
+            ]
+        },
+        {
+            "domain": "DOMStorage",
+            "experimental": true,
+            "description": "Query and modify DOM storage.",
+            "types": [
+                {
+                    "id": "StorageId",
+                    "type": "object",
+                    "description": "DOM Storage identifier.",
+                    "experimental": true,
+                    "properties": [
+                        {
+                            "name": "securityOrigin",
+                            "type": "string",
+                            "description": "Security origin for the storage."
+                        },
+                        {
+                            "name": "isLocalStorage",
+                            "type": "boolean",
+                            "description": "Whether the storage is local storage (not session storage)."
+                        }
+                    ]
+                },
+                {
+                    "id": "Item",
+                    "type": "array",
+                    "description": "DOM Storage item.",
+                    "experimental": true,
+                    "items": {
+                        "type": "string"
+                    }
+                }
+            ],
+            "commands": [
+                {
+                    "name": "enable",
+                    "description": "Enables storage tracking, storage events will now be delivered to the client."
+                },
+                {
+                    "name": "disable",
+                    "description": "Disables storage tracking, prevents storage events from being sent to the client."
+                },
+                {
+                    "name": "clear",
+                    "parameters": [
+                        {
+                            "name": "storageId",
+                            "$ref": "StorageId"
+                        }
+                    ]
+                },
+                {
+                    "name": "getDOMStorageItems",
+                    "parameters": [
+                        {
+                            "name": "storageId",
+                            "$ref": "StorageId"
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "entries",
+                            "type": "array",
+                            "items": {
+                                "$ref": "Item"
+                            }
+                        }
+                    ]
+                },
+                {
+                    "name": "setDOMStorageItem",
+                    "parameters": [
+                        {
+                            "name": "storageId",
+                            "$ref": "StorageId"
+                        },
+                        {
+                            "name": "key",
+                            "type": "string"
+                        },
+                        {
+                            "name": "value",
+                            "type": "string"
+                        }
+                    ]
+                },
+                {
+                    "name": "removeDOMStorageItem",
+                    "parameters": [
+                        {
+                            "name": "storageId",
+                            "$ref": "StorageId"
+                        },
+                        {
+                            "name": "key",
+                            "type": "string"
+                        }
+                    ]
+                }
+            ],
+            "events": [
+                {
+                    "name": "domStorageItemsCleared",
+                    "parameters": [
+                        {
+                            "name": "storageId",
+                            "$ref": "StorageId"
+                        }
+                    ]
+                },
+                {
+                    "name": "domStorageItemRemoved",
+                    "parameters": [
+                        {
+                            "name": "storageId",
+                            "$ref": "StorageId"
+                        },
+                        {
+                            "name": "key",
+                            "type": "string"
+                        }
+                    ]
+                },
+                {
+                    "name": "domStorageItemAdded",
+                    "parameters": [
+                        {
+                            "name": "storageId",
+                            "$ref": "StorageId"
+                        },
+                        {
+                            "name": "key",
+                            "type": "string"
+                        },
+                        {
+                            "name": "newValue",
+                            "type": "string"
+                        }
+                    ]
+                },
+                {
+                    "name": "domStorageItemUpdated",
+                    "parameters": [
+                        {
+                            "name": "storageId",
+                            "$ref": "StorageId"
+                        },
+                        {
+                            "name": "key",
+                            "type": "string"
+                        },
+                        {
+                            "name": "oldValue",
+                            "type": "string"
+                        },
+                        {
+                            "name": "newValue",
+                            "type": "string"
+                        }
+                    ]
+                }
+            ]
+        },
+        {
+            "domain": "ApplicationCache",
+            "experimental": true,
+            "types": [
+                {
+                    "id": "ApplicationCacheResource",
+                    "type": "object",
+                    "description": "Detailed application cache resource information.",
+                    "properties": [
+                        {
+                            "name": "url",
+                            "type": "string",
+                            "description": "Resource url."
+                        },
+                        {
+                            "name": "size",
+                            "type": "integer",
+                            "description": "Resource size."
+                        },
+                        {
+                            "name": "type",
+                            "type": "string",
+                            "description": "Resource type."
+                        }
+                    ]
+                },
+                {
+                    "id": "ApplicationCache",
+                    "type": "object",
+                    "description": "Detailed application cache information.",
+                    "properties": [
+                        {
+                            "name": "manifestURL",
+                            "type": "string",
+                            "description": "Manifest URL."
+                        },
+                        {
+                            "name": "size",
+                            "type": "number",
+                            "description": "Application cache size."
+                        },
+                        {
+                            "name": "creationTime",
+                            "type": "number",
+                            "description": "Application cache creation time."
+                        },
+                        {
+                            "name": "updateTime",
+                            "type": "number",
+                            "description": "Application cache update time."
+                        },
+                        {
+                            "name": "resources",
+                            "type": "array",
+                            "items": {
+                                "$ref": "ApplicationCacheResource"
+                            },
+                            "description": "Application cache resources."
+                        }
+                    ]
+                },
+                {
+                    "id": "FrameWithManifest",
+                    "type": "object",
+                    "description": "Frame identifier - manifest URL pair.",
+                    "properties": [
+                        {
+                            "name": "frameId",
+                            "$ref": "Page.FrameId",
+                            "description": "Frame identifier."
+                        },
+                        {
+                            "name": "manifestURL",
+                            "type": "string",
+                            "description": "Manifest URL."
+                        },
+                        {
+                            "name": "status",
+                            "type": "integer",
+                            "description": "Application cache status."
+                        }
+                    ]
+                }
+            ],
+            "commands": [
+                {
+                    "name": "getFramesWithManifests",
+                    "returns": [
+                        {
+                            "name": "frameIds",
+                            "type": "array",
+                            "items": {
+                                "$ref": "FrameWithManifest"
+                            },
+                            "description": "Array of frame identifiers with manifest urls for each frame containing a document associated with some application cache."
+                        }
+                    ],
+                    "description": "Returns array of frame identifiers with manifest urls for each frame containing a document associated with some application cache."
+                },
+                {
+                    "name": "enable",
+                    "description": "Enables application cache domain notifications."
+                },
+                {
+                    "name": "getManifestForFrame",
+                    "parameters": [
+                        {
+                            "name": "frameId",
+                            "$ref": "Page.FrameId",
+                            "description": "Identifier of the frame containing document whose manifest is retrieved."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "manifestURL",
+                            "type": "string",
+                            "description": "Manifest URL for document in the given frame."
+                        }
+                    ],
+                    "description": "Returns manifest URL for document in the given frame."
+                },
+                {
+                    "name": "getApplicationCacheForFrame",
+                    "parameters": [
+                        {
+                            "name": "frameId",
+                            "$ref": "Page.FrameId",
+                            "description": "Identifier of the frame containing document whose application cache is retrieved."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "applicationCache",
+                            "$ref": "ApplicationCache",
+                            "description": "Relevant application cache data for the document in given frame."
+                        }
+                    ],
+                    "description": "Returns relevant application cache data for the document in given frame."
+                }
+            ],
+            "events": [
+                {
+                    "name": "applicationCacheStatusUpdated",
+                    "parameters": [
+                        {
+                            "name": "frameId",
+                            "$ref": "Page.FrameId",
+                            "description": "Identifier of the frame containing document whose application cache updated status."
+                        },
+                        {
+                            "name": "manifestURL",
+                            "type": "string",
+                            "description": "Manifest URL."
+                        },
+                        {
+                            "name": "status",
+                            "type": "integer",
+                            "description": "Updated application cache status."
+                        }
+                    ]
+                },
+                {
+                    "name": "networkStateUpdated",
+                    "parameters": [
+                        {
+                            "name": "isNowOnline",
+                            "type": "boolean"
+                        }
+                    ]
+                }
+            ]
+        },
+        {
+            "domain": "DOM",
+            "description": "This domain exposes DOM read/write operations. Each DOM Node is represented with its mirror object that has an <code>id</code>. This <code>id</code> can be used to get additional information on the Node, resolve it into the JavaScript object wrapper, etc. It is important that client receives DOM events only for the nodes that are known to the client. Backend keeps track of the nodes that were sent to the client and never sends the same node twice. It is client's responsibility to collect information about the nodes that were sent to the client.<p>Note that <code>iframe</code> owner elements will return corresponding document elements as their child nodes.</p>",
+            "dependencies": [
+                "Runtime"
+            ],
+            "types": [
+                {
+                    "id": "NodeId",
+                    "type": "integer",
+                    "description": "Unique DOM node identifier."
+                },
+                {
+                    "id": "BackendNodeId",
+                    "type": "integer",
+                    "description": "Unique DOM node identifier used to reference a node that may not have been pushed to the front-end.",
+                    "experimental": true
+                },
+                {
+                    "id": "BackendNode",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "nodeType",
+                            "type": "integer",
+                            "description": "<code>Node</code>'s nodeType."
+                        },
+                        {
+                            "name": "nodeName",
+                            "type": "string",
+                            "description": "<code>Node</code>'s nodeName."
+                        },
+                        {
+                            "name": "backendNodeId",
+                            "$ref": "BackendNodeId"
+                        }
+                    ],
+                    "experimental": true,
+                    "description": "Backend node with a friendly name."
+                },
+                {
+                    "id": "PseudoType",
+                    "type": "string",
+                    "enum": [
+                        "first-line",
+                        "first-letter",
+                        "before",
+                        "after",
+                        "backdrop",
+                        "selection",
+                        "first-line-inherited",
+                        "scrollbar",
+                        "scrollbar-thumb",
+                        "scrollbar-button",
+                        "scrollbar-track",
+                        "scrollbar-track-piece",
+                        "scrollbar-corner",
+                        "resizer",
+                        "input-list-button"
+                    ],
+                    "description": "Pseudo element type."
+                },
+                {
+                    "id": "ShadowRootType",
+                    "type": "string",
+                    "enum": [
+                        "user-agent",
+                        "open",
+                        "closed"
+                    ],
+                    "description": "Shadow root type."
+                },
+                {
+                    "id": "Node",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "NodeId",
+                            "description": "Node identifier that is passed into the rest of the DOM messages as the <code>nodeId</code>. Backend will only push node with given <code>id</code> once. It is aware of all requested nodes and will only fire DOM events for nodes known to the client."
+                        },
+                        {
+                            "name": "parentId",
+                            "$ref": "NodeId",
+                            "optional": true,
+                            "description": "The id of the parent node if any.",
+                            "experimental": true
+                        },
+                        {
+                            "name": "backendNodeId",
+                            "$ref": "BackendNodeId",
+                            "description": "The BackendNodeId for this node.",
+                            "experimental": true
+                        },
+                        {
+                            "name": "nodeType",
+                            "type": "integer",
+                            "description": "<code>Node</code>'s nodeType."
+                        },
+                        {
+                            "name": "nodeName",
+                            "type": "string",
+                            "description": "<code>Node</code>'s nodeName."
+                        },
+                        {
+                            "name": "localName",
+                            "type": "string",
+                            "description": "<code>Node</code>'s localName."
+                        },
+                        {
+                            "name": "nodeValue",
+                            "type": "string",
+                            "description": "<code>Node</code>'s nodeValue."
+                        },
+                        {
+                            "name": "childNodeCount",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "Child count for <code>Container</code> nodes."
+                        },
+                        {
+                            "name": "children",
+                            "type": "array",
+                            "optional": true,
+                            "items": {
+                                "$ref": "Node"
+                            },
+                            "description": "Child nodes of this node when requested with children."
+                        },
+                        {
+                            "name": "attributes",
+                            "type": "array",
+                            "optional": true,
+                            "items": {
+                                "type": "string"
+                            },
+                            "description": "Attributes of the <code>Element</code> node in the form of flat array <code>[name1, value1, name2, value2]</code>."
+                        },
+                        {
+                            "name": "documentURL",
+                            "type": "string",
+                            "optional": true,
+                            "description": "Document URL that <code>Document</code> or <code>FrameOwner</code> node points to."
+                        },
+                        {
+                            "name": "baseURL",
+                            "type": "string",
+                            "optional": true,
+                            "description": "Base URL that <code>Document</code> or <code>FrameOwner</code> node uses for URL completion.",
+                            "experimental": true
+                        },
+                        {
+                            "name": "publicId",
+                            "type": "string",
+                            "optional": true,
+                            "description": "<code>DocumentType</code>'s publicId."
+                        },
+                        {
+                            "name": "systemId",
+                            "type": "string",
+                            "optional": true,
+                            "description": "<code>DocumentType</code>'s systemId."
+                        },
+                        {
+                            "name": "internalSubset",
+                            "type": "string",
+                            "optional": true,
+                            "description": "<code>DocumentType</code>'s internalSubset."
+                        },
+                        {
+                            "name": "xmlVersion",
+                            "type": "string",
+                            "optional": true,
+                            "description": "<code>Document</code>'s XML version in case of XML documents."
+                        },
+                        {
+                            "name": "name",
+                            "type": "string",
+                            "optional": true,
+                            "description": "<code>Attr</code>'s name."
+                        },
+                        {
+                            "name": "value",
+                            "type": "string",
+                            "optional": true,
+                            "description": "<code>Attr</code>'s value."
+                        },
+                        {
+                            "name": "pseudoType",
+                            "$ref": "PseudoType",
+                            "optional": true,
+                            "description": "Pseudo element type for this node."
+                        },
+                        {
+                            "name": "shadowRootType",
+                            "$ref": "ShadowRootType",
+                            "optional": true,
+                            "description": "Shadow root type."
+                        },
+                        {
+                            "name": "frameId",
+                            "$ref": "Page.FrameId",
+                            "optional": true,
+                            "description": "Frame ID for frame owner elements.",
+                            "experimental": true
+                        },
+                        {
+                            "name": "contentDocument",
+                            "$ref": "Node",
+                            "optional": true,
+                            "description": "Content document for frame owner elements."
+                        },
+                        {
+                            "name": "shadowRoots",
+                            "type": "array",
+                            "optional": true,
+                            "items": {
+                                "$ref": "Node"
+                            },
+                            "description": "Shadow root list for given element host.",
+                            "experimental": true
+                        },
+                        {
+                            "name": "templateContent",
+                            "$ref": "Node",
+                            "optional": true,
+                            "description": "Content document fragment for template elements.",
+                            "experimental": true
+                        },
+                        {
+                            "name": "pseudoElements",
+                            "type": "array",
+                            "items": {
+                                "$ref": "Node"
+                            },
+                            "optional": true,
+                            "description": "Pseudo elements associated with this node.",
+                            "experimental": true
+                        },
+                        {
+                            "name": "importedDocument",
+                            "$ref": "Node",
+                            "optional": true,
+                            "description": "Import document for the HTMLImport links."
+                        },
+                        {
+                            "name": "distributedNodes",
+                            "type": "array",
+                            "items": {
+                                "$ref": "BackendNode"
+                            },
+                            "optional": true,
+                            "description": "Distributed nodes for given insertion point.",
+                            "experimental": true
+                        },
+                        {
+                            "name": "isSVG",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Whether the node is SVG.",
+                            "experimental": true
+                        }
+                    ],
+                    "description": "DOM interaction is implemented in terms of mirror objects that represent the actual DOM nodes. DOMNode is a base node mirror type."
+                },
+                {
+                    "id": "RGBA",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "r",
+                            "type": "integer",
+                            "description": "The red component, in the [0-255] range."
+                        },
+                        {
+                            "name": "g",
+                            "type": "integer",
+                            "description": "The green component, in the [0-255] range."
+                        },
+                        {
+                            "name": "b",
+                            "type": "integer",
+                            "description": "The blue component, in the [0-255] range."
+                        },
+                        {
+                            "name": "a",
+                            "type": "number",
+                            "optional": true,
+                            "description": "The alpha component, in the [0-1] range (default: 1)."
+                        }
+                    ],
+                    "description": "A structure holding an RGBA color."
+                },
+                {
+                    "id": "Quad",
+                    "type": "array",
+                    "items": {
+                        "type": "number"
+                    },
+                    "minItems": 8,
+                    "maxItems": 8,
+                    "description": "An array of quad vertices, x immediately followed by y for each point, points clock-wise.",
+                    "experimental": true
+                },
+                {
+                    "id": "BoxModel",
+                    "type": "object",
+                    "experimental": true,
+                    "properties": [
+                        {
+                            "name": "content",
+                            "$ref": "Quad",
+                            "description": "Content box"
+                        },
+                        {
+                            "name": "padding",
+                            "$ref": "Quad",
+                            "description": "Padding box"
+                        },
+                        {
+                            "name": "border",
+                            "$ref": "Quad",
+                            "description": "Border box"
+                        },
+                        {
+                            "name": "margin",
+                            "$ref": "Quad",
+                            "description": "Margin box"
+                        },
+                        {
+                            "name": "width",
+                            "type": "integer",
+                            "description": "Node width"
+                        },
+                        {
+                            "name": "height",
+                            "type": "integer",
+                            "description": "Node height"
+                        },
+                        {
+                            "name": "shapeOutside",
+                            "$ref": "ShapeOutsideInfo",
+                            "optional": true,
+                            "description": "Shape outside coordinates"
+                        }
+                    ],
+                    "description": "Box model."
+                },
+                {
+                    "id": "ShapeOutsideInfo",
+                    "type": "object",
+                    "experimental": true,
+                    "properties": [
+                        {
+                            "name": "bounds",
+                            "$ref": "Quad",
+                            "description": "Shape bounds"
+                        },
+                        {
+                            "name": "shape",
+                            "type": "array",
+                            "items": {
+                                "type": "any"
+                            },
+                            "description": "Shape coordinate details"
+                        },
+                        {
+                            "name": "marginShape",
+                            "type": "array",
+                            "items": {
+                                "type": "any"
+                            },
+                            "description": "Margin shape bounds"
+                        }
+                    ],
+                    "description": "CSS Shape Outside details."
+                },
+                {
+                    "id": "Rect",
+                    "type": "object",
+                    "experimental": true,
+                    "properties": [
+                        {
+                            "name": "x",
+                            "type": "number",
+                            "description": "X coordinate"
+                        },
+                        {
+                            "name": "y",
+                            "type": "number",
+                            "description": "Y coordinate"
+                        },
+                        {
+                            "name": "width",
+                            "type": "number",
+                            "description": "Rectangle width"
+                        },
+                        {
+                            "name": "height",
+                            "type": "number",
+                            "description": "Rectangle height"
+                        }
+                    ],
+                    "description": "Rectangle."
+                }
+            ],
+            "commands": [
+                {
+                    "name": "enable",
+                    "description": "Enables DOM agent for the given page."
+                },
+                {
+                    "name": "disable",
+                    "description": "Disables DOM agent for the given page."
+                },
+                {
+                    "name": "getDocument",
+                    "parameters": [
+                        {
+                            "name": "depth",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "The maximum depth at which children should be retrieved, defaults to 1. Use -1 for the entire subtree or provide an integer larger than 0.",
+                            "experimental": true
+                        },
+                        {
+                            "name": "pierce",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Whether or not iframes and shadow roots should be traversed when returning the subtree (default is false).",
+                            "experimental": true
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "root",
+                            "$ref": "Node",
+                            "description": "Resulting node."
+                        }
+                    ],
+                    "description": "Returns the root DOM node (and optionally the subtree) to the caller."
+                },
+                {
+                    "name": "getFlattenedDocument",
+                    "parameters": [
+                        {
+                            "name": "depth",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "The maximum depth at which children should be retrieved, defaults to 1. Use -1 for the entire subtree or provide an integer larger than 0.",
+                            "experimental": true
+                        },
+                        {
+                            "name": "pierce",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Whether or not iframes and shadow roots should be traversed when returning the subtree (default is false).",
+                            "experimental": true
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "nodes",
+                            "type": "array",
+                            "items": {
+                                "$ref": "Node"
+                            },
+                            "description": "Resulting node."
+                        }
+                    ],
+                    "description": "Returns the root DOM node (and optionally the subtree) to the caller."
+                },
+                {
+                    "name": "collectClassNamesFromSubtree",
+                    "parameters": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "NodeId",
+                            "description": "Id of the node to collect class names."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "classNames",
+                            "type": "array",
+                            "items": {
+                                "type": "string"
+                            },
+                            "description": "Class name list."
+                        }
+                    ],
+                    "description": "Collects class names for the node with given id and all of it's child nodes.",
+                    "experimental": true
+                },
+                {
+                    "name": "requestChildNodes",
+                    "parameters": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "NodeId",
+                            "description": "Id of the node to get children for."
+                        },
+                        {
+                            "name": "depth",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "The maximum depth at which children should be retrieved, defaults to 1. Use -1 for the entire subtree or provide an integer larger than 0.",
+                            "experimental": true
+                        },
+                        {
+                            "name": "pierce",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Whether or not iframes and shadow roots should be traversed when returning the sub-tree (default is false).",
+                            "experimental": true
+                        }
+                    ],
+                    "description": "Requests that children of the node with given id are returned to the caller in form of <code>setChildNodes</code> events where not only immediate children are retrieved, but all children down to the specified depth."
+                },
+                {
+                    "name": "querySelector",
+                    "parameters": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "NodeId",
+                            "description": "Id of the node to query upon."
+                        },
+                        {
+                            "name": "selector",
+                            "type": "string",
+                            "description": "Selector string."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "NodeId",
+                            "description": "Query selector result."
+                        }
+                    ],
+                    "description": "Executes <code>querySelector</code> on a given node."
+                },
+                {
+                    "name": "querySelectorAll",
+                    "parameters": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "NodeId",
+                            "description": "Id of the node to query upon."
+                        },
+                        {
+                            "name": "selector",
+                            "type": "string",
+                            "description": "Selector string."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "nodeIds",
+                            "type": "array",
+                            "items": {
+                                "$ref": "NodeId"
+                            },
+                            "description": "Query selector result."
+                        }
+                    ],
+                    "description": "Executes <code>querySelectorAll</code> on a given node."
+                },
+                {
+                    "name": "setNodeName",
+                    "parameters": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "NodeId",
+                            "description": "Id of the node to set name for."
+                        },
+                        {
+                            "name": "name",
+                            "type": "string",
+                            "description": "New node's name."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "NodeId",
+                            "description": "New node's id."
+                        }
+                    ],
+                    "description": "Sets node name for a node with given id."
+                },
+                {
+                    "name": "setNodeValue",
+                    "parameters": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "NodeId",
+                            "description": "Id of the node to set value for."
+                        },
+                        {
+                            "name": "value",
+                            "type": "string",
+                            "description": "New node's value."
+                        }
+                    ],
+                    "description": "Sets node value for a node with given id."
+                },
+                {
+                    "name": "removeNode",
+                    "parameters": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "NodeId",
+                            "description": "Id of the node to remove."
+                        }
+                    ],
+                    "description": "Removes node with given id."
+                },
+                {
+                    "name": "setAttributeValue",
+                    "parameters": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "NodeId",
+                            "description": "Id of the element to set attribute for."
+                        },
+                        {
+                            "name": "name",
+                            "type": "string",
+                            "description": "Attribute name."
+                        },
+                        {
+                            "name": "value",
+                            "type": "string",
+                            "description": "Attribute value."
+                        }
+                    ],
+                    "description": "Sets attribute for an element with given id."
+                },
+                {
+                    "name": "setAttributesAsText",
+                    "parameters": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "NodeId",
+                            "description": "Id of the element to set attributes for."
+                        },
+                        {
+                            "name": "text",
+                            "type": "string",
+                            "description": "Text with a number of attributes. Will parse this text using HTML parser."
+                        },
+                        {
+                            "name": "name",
+                            "type": "string",
+                            "optional": true,
+                            "description": "Attribute name to replace with new attributes derived from text in case text parsed successfully."
+                        }
+                    ],
+                    "description": "Sets attributes on element with given id. This method is useful when user edits some existing attribute value and types in several attribute name/value pairs."
+                },
+                {
+                    "name": "removeAttribute",
+                    "parameters": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "NodeId",
+                            "description": "Id of the element to remove attribute from."
+                        },
+                        {
+                            "name": "name",
+                            "type": "string",
+                            "description": "Name of the attribute to remove."
+                        }
+                    ],
+                    "description": "Removes attribute with given name from an element with given id."
+                },
+                {
+                    "name": "getOuterHTML",
+                    "parameters": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "NodeId",
+                            "description": "Id of the node to get markup for."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "outerHTML",
+                            "type": "string",
+                            "description": "Outer HTML markup."
+                        }
+                    ],
+                    "description": "Returns node's HTML markup."
+                },
+                {
+                    "name": "setOuterHTML",
+                    "parameters": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "NodeId",
+                            "description": "Id of the node to set markup for."
+                        },
+                        {
+                            "name": "outerHTML",
+                            "type": "string",
+                            "description": "Outer HTML markup to set."
+                        }
+                    ],
+                    "description": "Sets node HTML markup, returns new node id."
+                },
+                {
+                    "name": "performSearch",
+                    "parameters": [
+                        {
+                            "name": "query",
+                            "type": "string",
+                            "description": "Plain text or query selector or XPath search query."
+                        },
+                        {
+                            "name": "includeUserAgentShadowDOM",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "True to search in user agent shadow DOM.",
+                            "experimental": true
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "searchId",
+                            "type": "string",
+                            "description": "Unique search session identifier."
+                        },
+                        {
+                            "name": "resultCount",
+                            "type": "integer",
+                            "description": "Number of search results."
+                        }
+                    ],
+                    "description": "Searches for a given string in the DOM tree. Use <code>getSearchResults</code> to access search results or <code>cancelSearch</code> to end this search session.",
+                    "experimental": true
+                },
+                {
+                    "name": "getSearchResults",
+                    "parameters": [
+                        {
+                            "name": "searchId",
+                            "type": "string",
+                            "description": "Unique search session identifier."
+                        },
+                        {
+                            "name": "fromIndex",
+                            "type": "integer",
+                            "description": "Start index of the search result to be returned."
+                        },
+                        {
+                            "name": "toIndex",
+                            "type": "integer",
+                            "description": "End index of the search result to be returned."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "nodeIds",
+                            "type": "array",
+                            "items": {
+                                "$ref": "NodeId"
+                            },
+                            "description": "Ids of the search result nodes."
+                        }
+                    ],
+                    "description": "Returns search results from given <code>fromIndex</code> to given <code>toIndex</code> from the sarch with the given identifier.",
+                    "experimental": true
+                },
+                {
+                    "name": "discardSearchResults",
+                    "parameters": [
+                        {
+                            "name": "searchId",
+                            "type": "string",
+                            "description": "Unique search session identifier."
+                        }
+                    ],
+                    "description": "Discards search results from the session with the given id. <code>getSearchResults</code> should no longer be called for that search.",
+                    "experimental": true
+                },
+                {
+                    "name": "requestNode",
+                    "parameters": [
+                        {
+                            "name": "objectId",
+                            "$ref": "Runtime.RemoteObjectId",
+                            "description": "JavaScript object id to convert into node."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "NodeId",
+                            "description": "Node id for given object."
+                        }
+                    ],
+                    "description": "Requests that the node is sent to the caller given the JavaScript node object reference. All nodes that form the path from the node to the root are also sent to the client as a series of <code>setChildNodes</code> notifications."
+                },
+                {
+                    "name": "highlightRect",
+                    "description": "Highlights given rectangle.",
+                    "redirect": "Overlay"
+                },
+                {
+                    "name": "highlightNode",
+                    "description": "Highlights DOM node.",
+                    "redirect": "Overlay"
+                },
+                {
+                    "name": "hideHighlight",
+                    "description": "Hides any highlight.",
+                    "redirect": "Overlay"
+                },
+                {
+                    "name": "pushNodeByPathToFrontend",
+                    "parameters": [
+                        {
+                            "name": "path",
+                            "type": "string",
+                            "description": "Path to node in the proprietary format."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "NodeId",
+                            "description": "Id of the node for given path."
+                        }
+                    ],
+                    "description": "Requests that the node is sent to the caller given its path. // FIXME, use XPath",
+                    "experimental": true
+                },
+                {
+                    "name": "pushNodesByBackendIdsToFrontend",
+                    "parameters": [
+                        {
+                            "name": "backendNodeIds",
+                            "type": "array",
+                            "items": {
+                                "$ref": "BackendNodeId"
+                            },
+                            "description": "The array of backend node ids."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "nodeIds",
+                            "type": "array",
+                            "items": {
+                                "$ref": "NodeId"
+                            },
+                            "description": "The array of ids of pushed nodes that correspond to the backend ids specified in backendNodeIds."
+                        }
+                    ],
+                    "description": "Requests that a batch of nodes is sent to the caller given their backend node ids.",
+                    "experimental": true
+                },
+                {
+                    "name": "setInspectedNode",
+                    "parameters": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "NodeId",
+                            "description": "DOM node id to be accessible by means of $x command line API."
+                        }
+                    ],
+                    "description": "Enables console to refer to the node with given id via $x (see Command Line API for more details $x functions).",
+                    "experimental": true
+                },
+                {
+                    "name": "resolveNode",
+                    "parameters": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "NodeId",
+                            "description": "Id of the node to resolve."
+                        },
+                        {
+                            "name": "objectGroup",
+                            "type": "string",
+                            "optional": true,
+                            "description": "Symbolic group name that can be used to release multiple objects."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "object",
+                            "$ref": "Runtime.RemoteObject",
+                            "description": "JavaScript object wrapper for given node."
+                        }
+                    ],
+                    "description": "Resolves JavaScript node object for given node id."
+                },
+                {
+                    "name": "getAttributes",
+                    "parameters": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "NodeId",
+                            "description": "Id of the node to retrieve attibutes for."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "attributes",
+                            "type": "array",
+                            "items": {
+                                "type": "string"
+                            },
+                            "description": "An interleaved array of node attribute names and values."
+                        }
+                    ],
+                    "description": "Returns attributes for the specified node."
+                },
+                {
+                    "name": "copyTo",
+                    "parameters": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "NodeId",
+                            "description": "Id of the node to copy."
+                        },
+                        {
+                            "name": "targetNodeId",
+                            "$ref": "NodeId",
+                            "description": "Id of the element to drop the copy into."
+                        },
+                        {
+                            "name": "insertBeforeNodeId",
+                            "$ref": "NodeId",
+                            "optional": true,
+                            "description": "Drop the copy before this node (if absent, the copy becomes the last child of <code>targetNodeId</code>)."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "NodeId",
+                            "description": "Id of the node clone."
+                        }
+                    ],
+                    "description": "Creates a deep copy of the specified node and places it into the target container before the given anchor.",
+                    "experimental": true
+                },
+                {
+                    "name": "moveTo",
+                    "parameters": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "NodeId",
+                            "description": "Id of the node to move."
+                        },
+                        {
+                            "name": "targetNodeId",
+                            "$ref": "NodeId",
+                            "description": "Id of the element to drop the moved node into."
+                        },
+                        {
+                            "name": "insertBeforeNodeId",
+                            "$ref": "NodeId",
+                            "optional": true,
+                            "description": "Drop node before this one (if absent, the moved node becomes the last child of <code>targetNodeId</code>)."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "NodeId",
+                            "description": "New id of the moved node."
+                        }
+                    ],
+                    "description": "Moves node into the new container, places it before the given anchor."
+                },
+                {
+                    "name": "undo",
+                    "description": "Undoes the last performed action.",
+                    "experimental": true
+                },
+                {
+                    "name": "redo",
+                    "description": "Re-does the last undone action.",
+                    "experimental": true
+                },
+                {
+                    "name": "markUndoableState",
+                    "description": "Marks last undoable state.",
+                    "experimental": true
+                },
+                {
+                    "name": "focus",
+                    "parameters": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "NodeId",
+                            "description": "Id of the node to focus."
+                        }
+                    ],
+                    "description": "Focuses the given element.",
+                    "experimental": true
+                },
+                {
+                    "name": "setFileInputFiles",
+                    "parameters": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "NodeId",
+                            "description": "Id of the file input node to set files for."
+                        },
+                        {
+                            "name": "files",
+                            "type": "array",
+                            "items": {
+                                "type": "string"
+                            },
+                            "description": "Array of file paths to set."
+                        }
+                    ],
+                    "description": "Sets files for the given file input element.",
+                    "experimental": true
+                },
+                {
+                    "name": "getBoxModel",
+                    "parameters": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "NodeId",
+                            "description": "Id of the node to get box model for."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "model",
+                            "$ref": "BoxModel",
+                            "description": "Box model for the node."
+                        }
+                    ],
+                    "description": "Returns boxes for the currently selected nodes.",
+                    "experimental": true
+                },
+                {
+                    "name": "getNodeForLocation",
+                    "parameters": [
+                        {
+                            "name": "x",
+                            "type": "integer",
+                            "description": "X coordinate."
+                        },
+                        {
+                            "name": "y",
+                            "type": "integer",
+                            "description": "Y coordinate."
+                        },
+                        {
+                            "name": "includeUserAgentShadowDOM",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "False to skip to the nearest non-UA shadow root ancestor (default: false)."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "NodeId",
+                            "description": "Id of the node at given coordinates."
+                        }
+                    ],
+                    "description": "Returns node id at given location.",
+                    "experimental": true
+                },
+                {
+                    "name": "getRelayoutBoundary",
+                    "parameters": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "NodeId",
+                            "description": "Id of the node."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "NodeId",
+                            "description": "Relayout boundary node id for the given node."
+                        }
+                    ],
+                    "description": "Returns the id of the nearest ancestor that is a relayout boundary.",
+                    "experimental": true
+                }
+            ],
+            "events": [
+                {
+                    "name": "documentUpdated",
+                    "description": "Fired when <code>Document</code> has been totally updated. Node ids are no longer valid."
+                },
+                {
+                    "name": "setChildNodes",
+                    "parameters": [
+                        {
+                            "name": "parentId",
+                            "$ref": "NodeId",
+                            "description": "Parent node id to populate with children."
+                        },
+                        {
+                            "name": "nodes",
+                            "type": "array",
+                            "items": {
+                                "$ref": "Node"
+                            },
+                            "description": "Child nodes array."
+                        }
+                    ],
+                    "description": "Fired when backend wants to provide client with the missing DOM structure. This happens upon most of the calls requesting node ids."
+                },
+                {
+                    "name": "attributeModified",
+                    "parameters": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "NodeId",
+                            "description": "Id of the node that has changed."
+                        },
+                        {
+                            "name": "name",
+                            "type": "string",
+                            "description": "Attribute name."
+                        },
+                        {
+                            "name": "value",
+                            "type": "string",
+                            "description": "Attribute value."
+                        }
+                    ],
+                    "description": "Fired when <code>Element</code>'s attribute is modified."
+                },
+                {
+                    "name": "attributeRemoved",
+                    "parameters": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "NodeId",
+                            "description": "Id of the node that has changed."
+                        },
+                        {
+                            "name": "name",
+                            "type": "string",
+                            "description": "A ttribute name."
+                        }
+                    ],
+                    "description": "Fired when <code>Element</code>'s attribute is removed."
+                },
+                {
+                    "name": "inlineStyleInvalidated",
+                    "parameters": [
+                        {
+                            "name": "nodeIds",
+                            "type": "array",
+                            "items": {
+                                "$ref": "NodeId"
+                            },
+                            "description": "Ids of the nodes for which the inline styles have been invalidated."
+                        }
+                    ],
+                    "description": "Fired when <code>Element</code>'s inline style is modified via a CSS property modification.",
+                    "experimental": true
+                },
+                {
+                    "name": "characterDataModified",
+                    "parameters": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "NodeId",
+                            "description": "Id of the node that has changed."
+                        },
+                        {
+                            "name": "characterData",
+                            "type": "string",
+                            "description": "New text value."
+                        }
+                    ],
+                    "description": "Mirrors <code>DOMCharacterDataModified</code> event."
+                },
+                {
+                    "name": "childNodeCountUpdated",
+                    "parameters": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "NodeId",
+                            "description": "Id of the node that has changed."
+                        },
+                        {
+                            "name": "childNodeCount",
+                            "type": "integer",
+                            "description": "New node count."
+                        }
+                    ],
+                    "description": "Fired when <code>Container</code>'s child node count has changed."
+                },
+                {
+                    "name": "childNodeInserted",
+                    "parameters": [
+                        {
+                            "name": "parentNodeId",
+                            "$ref": "NodeId",
+                            "description": "Id of the node that has changed."
+                        },
+                        {
+                            "name": "previousNodeId",
+                            "$ref": "NodeId",
+                            "description": "If of the previous siblint."
+                        },
+                        {
+                            "name": "node",
+                            "$ref": "Node",
+                            "description": "Inserted node data."
+                        }
+                    ],
+                    "description": "Mirrors <code>DOMNodeInserted</code> event."
+                },
+                {
+                    "name": "childNodeRemoved",
+                    "parameters": [
+                        {
+                            "name": "parentNodeId",
+                            "$ref": "NodeId",
+                            "description": "Parent id."
+                        },
+                        {
+                            "name": "nodeId",
+                            "$ref": "NodeId",
+                            "description": "Id of the node that has been removed."
+                        }
+                    ],
+                    "description": "Mirrors <code>DOMNodeRemoved</code> event."
+                },
+                {
+                    "name": "shadowRootPushed",
+                    "parameters": [
+                        {
+                            "name": "hostId",
+                            "$ref": "NodeId",
+                            "description": "Host element id."
+                        },
+                        {
+                            "name": "root",
+                            "$ref": "Node",
+                            "description": "Shadow root."
+                        }
+                    ],
+                    "description": "Called when shadow root is pushed into the element.",
+                    "experimental": true
+                },
+                {
+                    "name": "shadowRootPopped",
+                    "parameters": [
+                        {
+                            "name": "hostId",
+                            "$ref": "NodeId",
+                            "description": "Host element id."
+                        },
+                        {
+                            "name": "rootId",
+                            "$ref": "NodeId",
+                            "description": "Shadow root id."
+                        }
+                    ],
+                    "description": "Called when shadow root is popped from the element.",
+                    "experimental": true
+                },
+                {
+                    "name": "pseudoElementAdded",
+                    "parameters": [
+                        {
+                            "name": "parentId",
+                            "$ref": "NodeId",
+                            "description": "Pseudo element's parent element id."
+                        },
+                        {
+                            "name": "pseudoElement",
+                            "$ref": "Node",
+                            "description": "The added pseudo element."
+                        }
+                    ],
+                    "description": "Called when a pseudo element is added to an element.",
+                    "experimental": true
+                },
+                {
+                    "name": "pseudoElementRemoved",
+                    "parameters": [
+                        {
+                            "name": "parentId",
+                            "$ref": "NodeId",
+                            "description": "Pseudo element's parent element id."
+                        },
+                        {
+                            "name": "pseudoElementId",
+                            "$ref": "NodeId",
+                            "description": "The removed pseudo element id."
+                        }
+                    ],
+                    "description": "Called when a pseudo element is removed from an element.",
+                    "experimental": true
+                },
+                {
+                    "name": "distributedNodesUpdated",
+                    "parameters": [
+                        {
+                            "name": "insertionPointId",
+                            "$ref": "NodeId",
+                            "description": "Insertion point where distrubuted nodes were updated."
+                        },
+                        {
+                            "name": "distributedNodes",
+                            "type": "array",
+                            "items": {
+                                "$ref": "BackendNode"
+                            },
+                            "description": "Distributed nodes for given insertion point."
+                        }
+                    ],
+                    "description": "Called when distrubution is changed.",
+                    "experimental": true
+                }
+            ]
+        },
+        {
+            "domain": "CSS",
+            "experimental": true,
+            "description": "This domain exposes CSS read/write operations. All CSS objects (stylesheets, rules, and styles) have an associated <code>id</code> used in subsequent operations on the related object. Each object type has a specific <code>id</code> structure, and those are not interchangeable between objects of different kinds. CSS objects can be loaded using the <code>get*ForNode()</code> calls (which accept a DOM node id). A client can also discover all the existing stylesheets with the <code>getAllStyleSheets()</code> method (or keeping track of the <code>styleSheetAdded</code>/<code>styleSheetRemoved</code> events) and subsequently load the required stylesheet contents using the <code>getStyleSheet[Text]()</code> methods.",
+            "dependencies": [
+                "DOM"
+            ],
+            "types": [
+                {
+                    "id": "StyleSheetId",
+                    "type": "string"
+                },
+                {
+                    "id": "StyleSheetOrigin",
+                    "type": "string",
+                    "enum": [
+                        "injected",
+                        "user-agent",
+                        "inspector",
+                        "regular"
+                    ],
+                    "description": "Stylesheet type: \"injected\" for stylesheets injected via extension, \"user-agent\" for user-agent stylesheets, \"inspector\" for stylesheets created by the inspector (i.e. those holding the \"via inspector\" rules), \"regular\" for regular stylesheets."
+                },
+                {
+                    "id": "PseudoElementMatches",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "pseudoType",
+                            "$ref": "DOM.PseudoType",
+                            "description": "Pseudo element type."
+                        },
+                        {
+                            "name": "matches",
+                            "type": "array",
+                            "items": {
+                                "$ref": "RuleMatch"
+                            },
+                            "description": "Matches of CSS rules applicable to the pseudo style."
+                        }
+                    ],
+                    "description": "CSS rule collection for a single pseudo style."
+                },
+                {
+                    "id": "InheritedStyleEntry",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "inlineStyle",
+                            "$ref": "CSSStyle",
+                            "optional": true,
+                            "description": "The ancestor node's inline style, if any, in the style inheritance chain."
+                        },
+                        {
+                            "name": "matchedCSSRules",
+                            "type": "array",
+                            "items": {
+                                "$ref": "RuleMatch"
+                            },
+                            "description": "Matches of CSS rules matching the ancestor node in the style inheritance chain."
+                        }
+                    ],
+                    "description": "Inherited CSS rule collection from ancestor node."
+                },
+                {
+                    "id": "RuleMatch",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "rule",
+                            "$ref": "CSSRule",
+                            "description": "CSS rule in the match."
+                        },
+                        {
+                            "name": "matchingSelectors",
+                            "type": "array",
+                            "items": {
+                                "type": "integer"
+                            },
+                            "description": "Matching selector indices in the rule's selectorList selectors (0-based)."
+                        }
+                    ],
+                    "description": "Match data for a CSS rule."
+                },
+                {
+                    "id": "Value",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "text",
+                            "type": "string",
+                            "description": "Value text."
+                        },
+                        {
+                            "name": "range",
+                            "$ref": "SourceRange",
+                            "optional": true,
+                            "description": "Value range in the underlying resource (if available)."
+                        }
+                    ],
+                    "description": "Data for a simple selector (these are delimited by commas in a selector list)."
+                },
+                {
+                    "id": "SelectorList",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "selectors",
+                            "type": "array",
+                            "items": {
+                                "$ref": "Value"
+                            },
+                            "description": "Selectors in the list."
+                        },
+                        {
+                            "name": "text",
+                            "type": "string",
+                            "description": "Rule selector text."
+                        }
+                    ],
+                    "description": "Selector list data."
+                },
+                {
+                    "id": "CSSStyleSheetHeader",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "styleSheetId",
+                            "$ref": "StyleSheetId",
+                            "description": "The stylesheet identifier."
+                        },
+                        {
+                            "name": "frameId",
+                            "$ref": "Page.FrameId",
+                            "description": "Owner frame identifier."
+                        },
+                        {
+                            "name": "sourceURL",
+                            "type": "string",
+                            "description": "Stylesheet resource URL."
+                        },
+                        {
+                            "name": "sourceMapURL",
+                            "type": "string",
+                            "optional": true,
+                            "description": "URL of source map associated with the stylesheet (if any)."
+                        },
+                        {
+                            "name": "origin",
+                            "$ref": "StyleSheetOrigin",
+                            "description": "Stylesheet origin."
+                        },
+                        {
+                            "name": "title",
+                            "type": "string",
+                            "description": "Stylesheet title."
+                        },
+                        {
+                            "name": "ownerNode",
+                            "$ref": "DOM.BackendNodeId",
+                            "optional": true,
+                            "description": "The backend id for the owner node of the stylesheet."
+                        },
+                        {
+                            "name": "disabled",
+                            "type": "boolean",
+                            "description": "Denotes whether the stylesheet is disabled."
+                        },
+                        {
+                            "name": "hasSourceURL",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Whether the sourceURL field value comes from the sourceURL comment."
+                        },
+                        {
+                            "name": "isInline",
+                            "type": "boolean",
+                            "description": "Whether this stylesheet is created for STYLE tag by parser. This flag is not set for document.written STYLE tags."
+                        },
+                        {
+                            "name": "startLine",
+                            "type": "number",
+                            "description": "Line offset of the stylesheet within the resource (zero based)."
+                        },
+                        {
+                            "name": "startColumn",
+                            "type": "number",
+                            "description": "Column offset of the stylesheet within the resource (zero based)."
+                        },
+                        {
+                            "name": "length",
+                            "type": "number",
+                            "description": "Size of the content (in characters).",
+                            "experimental": true
+                        }
+                    ],
+                    "description": "CSS stylesheet metainformation."
+                },
+                {
+                    "id": "CSSRule",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "styleSheetId",
+                            "$ref": "StyleSheetId",
+                            "optional": true,
+                            "description": "The css style sheet identifier (absent for user agent stylesheet and user-specified stylesheet rules) this rule came from."
+                        },
+                        {
+                            "name": "selectorList",
+                            "$ref": "SelectorList",
+                            "description": "Rule selector data."
+                        },
+                        {
+                            "name": "origin",
+                            "$ref": "StyleSheetOrigin",
+                            "description": "Parent stylesheet's origin."
+                        },
+                        {
+                            "name": "style",
+                            "$ref": "CSSStyle",
+                            "description": "Associated style declaration."
+                        },
+                        {
+                            "name": "media",
+                            "type": "array",
+                            "items": {
+                                "$ref": "CSSMedia"
+                            },
+                            "optional": true,
+                            "description": "Media list array (for rules involving media queries). The array enumerates media queries starting with the innermost one, going outwards."
+                        }
+                    ],
+                    "description": "CSS rule representation."
+                },
+                {
+                    "id": "RuleUsage",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "styleSheetId",
+                            "$ref": "StyleSheetId",
+                            "description": "The css style sheet identifier (absent for user agent stylesheet and user-specified stylesheet rules) this rule came from."
+                        },
+                        {
+                            "name": "startOffset",
+                            "type": "number",
+                            "description": "Offset of the start of the rule (including selector) from the beginning of the stylesheet."
+                        },
+                        {
+                            "name": "endOffset",
+                            "type": "number",
+                            "description": "Offset of the end of the rule body from the beginning of the stylesheet."
+                        },
+                        {
+                            "name": "used",
+                            "type": "boolean",
+                            "description": "Indicates whether the rule was actually used by some element in the page."
+                        }
+                    ],
+                    "description": "CSS coverage information.",
+                    "experimental": true
+                },
+                {
+                    "id": "SourceRange",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "startLine",
+                            "type": "integer",
+                            "description": "Start line of range."
+                        },
+                        {
+                            "name": "startColumn",
+                            "type": "integer",
+                            "description": "Start column of range (inclusive)."
+                        },
+                        {
+                            "name": "endLine",
+                            "type": "integer",
+                            "description": "End line of range"
+                        },
+                        {
+                            "name": "endColumn",
+                            "type": "integer",
+                            "description": "End column of range (exclusive)."
+                        }
+                    ],
+                    "description": "Text range within a resource. All numbers are zero-based."
+                },
+                {
+                    "id": "ShorthandEntry",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "name",
+                            "type": "string",
+                            "description": "Shorthand name."
+                        },
+                        {
+                            "name": "value",
+                            "type": "string",
+                            "description": "Shorthand value."
+                        },
+                        {
+                            "name": "important",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Whether the property has \"!important\" annotation (implies <code>false</code> if absent)."
+                        }
+                    ]
+                },
+                {
+                    "id": "CSSComputedStyleProperty",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "name",
+                            "type": "string",
+                            "description": "Computed style property name."
+                        },
+                        {
+                            "name": "value",
+                            "type": "string",
+                            "description": "Computed style property value."
+                        }
+                    ]
+                },
+                {
+                    "id": "CSSStyle",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "styleSheetId",
+                            "$ref": "StyleSheetId",
+                            "optional": true,
+                            "description": "The css style sheet identifier (absent for user agent stylesheet and user-specified stylesheet rules) this rule came from."
+                        },
+                        {
+                            "name": "cssProperties",
+                            "type": "array",
+                            "items": {
+                                "$ref": "CSSProperty"
+                            },
+                            "description": "CSS properties in the style."
+                        },
+                        {
+                            "name": "shorthandEntries",
+                            "type": "array",
+                            "items": {
+                                "$ref": "ShorthandEntry"
+                            },
+                            "description": "Computed values for all shorthands found in the style."
+                        },
+                        {
+                            "name": "cssText",
+                            "type": "string",
+                            "optional": true,
+                            "description": "Style declaration text (if available)."
+                        },
+                        {
+                            "name": "range",
+                            "$ref": "SourceRange",
+                            "optional": true,
+                            "description": "Style declaration range in the enclosing stylesheet (if available)."
+                        }
+                    ],
+                    "description": "CSS style representation."
+                },
+                {
+                    "id": "CSSProperty",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "name",
+                            "type": "string",
+                            "description": "The property name."
+                        },
+                        {
+                            "name": "value",
+                            "type": "string",
+                            "description": "The property value."
+                        },
+                        {
+                            "name": "important",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Whether the property has \"!important\" annotation (implies <code>false</code> if absent)."
+                        },
+                        {
+                            "name": "implicit",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Whether the property is implicit (implies <code>false</code> if absent)."
+                        },
+                        {
+                            "name": "text",
+                            "type": "string",
+                            "optional": true,
+                            "description": "The full property text as specified in the style."
+                        },
+                        {
+                            "name": "parsedOk",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Whether the property is understood by the browser (implies <code>true</code> if absent)."
+                        },
+                        {
+                            "name": "disabled",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Whether the property is disabled by the user (present for source-based properties only)."
+                        },
+                        {
+                            "name": "range",
+                            "$ref": "SourceRange",
+                            "optional": true,
+                            "description": "The entire property range in the enclosing style declaration (if available)."
+                        }
+                    ],
+                    "description": "CSS property declaration data."
+                },
+                {
+                    "id": "CSSMedia",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "text",
+                            "type": "string",
+                            "description": "Media query text."
+                        },
+                        {
+                            "name": "source",
+                            "type": "string",
+                            "enum": [
+                                "mediaRule",
+                                "importRule",
+                                "linkedSheet",
+                                "inlineSheet"
+                            ],
+                            "description": "Source of the media query: \"mediaRule\" if specified by a @media rule, \"importRule\" if specified by an @import rule, \"linkedSheet\" if specified by a \"media\" attribute in a linked stylesheet's LINK tag, \"inlineSheet\" if specified by a \"media\" attribute in an inline stylesheet's STYLE tag."
+                        },
+                        {
+                            "name": "sourceURL",
+                            "type": "string",
+                            "optional": true,
+                            "description": "URL of the document containing the media query description."
+                        },
+                        {
+                            "name": "range",
+                            "$ref": "SourceRange",
+                            "optional": true,
+                            "description": "The associated rule (@media or @import) header range in the enclosing stylesheet (if available)."
+                        },
+                        {
+                            "name": "styleSheetId",
+                            "$ref": "StyleSheetId",
+                            "optional": true,
+                            "description": "Identifier of the stylesheet containing this object (if exists)."
+                        },
+                        {
+                            "name": "mediaList",
+                            "type": "array",
+                            "items": {
+                                "$ref": "MediaQuery"
+                            },
+                            "optional": true,
+                            "experimental": true,
+                            "description": "Array of media queries."
+                        }
+                    ],
+                    "description": "CSS media rule descriptor."
+                },
+                {
+                    "id": "MediaQuery",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "expressions",
+                            "type": "array",
+                            "items": {
+                                "$ref": "MediaQueryExpression"
+                            },
+                            "description": "Array of media query expressions."
+                        },
+                        {
+                            "name": "active",
+                            "type": "boolean",
+                            "description": "Whether the media query condition is satisfied."
+                        }
+                    ],
+                    "description": "Media query descriptor.",
+                    "experimental": true
+                },
+                {
+                    "id": "MediaQueryExpression",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "value",
+                            "type": "number",
+                            "description": "Media query expression value."
+                        },
+                        {
+                            "name": "unit",
+                            "type": "string",
+                            "description": "Media query expression units."
+                        },
+                        {
+                            "name": "feature",
+                            "type": "string",
+                            "description": "Media query expression feature."
+                        },
+                        {
+                            "name": "valueRange",
+                            "$ref": "SourceRange",
+                            "optional": true,
+                            "description": "The associated range of the value text in the enclosing stylesheet (if available)."
+                        },
+                        {
+                            "name": "computedLength",
+                            "type": "number",
+                            "optional": true,
+                            "description": "Computed length of media query expression (if applicable)."
+                        }
+                    ],
+                    "description": "Media query expression descriptor.",
+                    "experimental": true
+                },
+                {
+                    "id": "PlatformFontUsage",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "familyName",
+                            "type": "string",
+                            "description": "Font's family name reported by platform."
+                        },
+                        {
+                            "name": "isCustomFont",
+                            "type": "boolean",
+                            "description": "Indicates if the font was downloaded or resolved locally."
+                        },
+                        {
+                            "name": "glyphCount",
+                            "type": "number",
+                            "description": "Amount of glyphs that were rendered with this font."
+                        }
+                    ],
+                    "description": "Information about amount of glyphs that were rendered with given font.",
+                    "experimental": true
+                },
+                {
+                    "id": "CSSKeyframesRule",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "animationName",
+                            "$ref": "Value",
+                            "description": "Animation name."
+                        },
+                        {
+                            "name": "keyframes",
+                            "type": "array",
+                            "items": {
+                                "$ref": "CSSKeyframeRule"
+                            },
+                            "description": "List of keyframes."
+                        }
+                    ],
+                    "description": "CSS keyframes rule representation."
+                },
+                {
+                    "id": "CSSKeyframeRule",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "styleSheetId",
+                            "$ref": "StyleSheetId",
+                            "optional": true,
+                            "description": "The css style sheet identifier (absent for user agent stylesheet and user-specified stylesheet rules) this rule came from."
+                        },
+                        {
+                            "name": "origin",
+                            "$ref": "StyleSheetOrigin",
+                            "description": "Parent stylesheet's origin."
+                        },
+                        {
+                            "name": "keyText",
+                            "$ref": "Value",
+                            "description": "Associated key text."
+                        },
+                        {
+                            "name": "style",
+                            "$ref": "CSSStyle",
+                            "description": "Associated style declaration."
+                        }
+                    ],
+                    "description": "CSS keyframe rule representation."
+                },
+                {
+                    "id": "StyleDeclarationEdit",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "styleSheetId",
+                            "$ref": "StyleSheetId",
+                            "description": "The css style sheet identifier."
+                        },
+                        {
+                            "name": "range",
+                            "$ref": "SourceRange",
+                            "description": "The range of the style text in the enclosing stylesheet."
+                        },
+                        {
+                            "name": "text",
+                            "type": "string",
+                            "description": "New style text."
+                        }
+                    ],
+                    "description": "A descriptor of operation to mutate style declaration text."
+                },
+                {
+                    "id": "InlineTextBox",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "boundingBox",
+                            "$ref": "DOM.Rect",
+                            "description": "The absolute position bounding box."
+                        },
+                        {
+                            "name": "startCharacterIndex",
+                            "type": "integer",
+                            "description": "The starting index in characters, for this post layout textbox substring."
+                        },
+                        {
+                            "name": "numCharacters",
+                            "type": "integer",
+                            "description": "The number of characters in this post layout textbox substring."
+                        }
+                    ],
+                    "description": "Details of post layout rendered text positions. The exact layout should not be regarded as stable and may change between versions.",
+                    "experimental": true
+                },
+                {
+                    "id": "LayoutTreeNode",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "DOM.NodeId",
+                            "description": "The id of the related DOM node matching one from DOM.GetDocument."
+                        },
+                        {
+                            "name": "boundingBox",
+                            "$ref": "DOM.Rect",
+                            "description": "The absolute position bounding box."
+                        },
+                        {
+                            "name": "layoutText",
+                            "type": "string",
+                            "optional": true,
+                            "description": "Contents of the LayoutText if any"
+                        },
+                        {
+                            "name": "inlineTextNodes",
+                            "type": "array",
+                            "optional": true,
+                            "items": {
+                                "$ref": "InlineTextBox"
+                            },
+                            "description": "The post layout inline text nodes, if any."
+                        },
+                        {
+                            "name": "styleIndex",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "Index into the computedStyles array returned by getLayoutTreeAndStyles."
+                        }
+                    ],
+                    "description": "Details of an element in the DOM tree with a LayoutObject.",
+                    "experimental": true
+                },
+                {
+                    "id": "ComputedStyle",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "properties",
+                            "type": "array",
+                            "items": {
+                                "$ref": "CSSComputedStyleProperty"
+                            }
+                        }
+                    ],
+                    "description": "A subset of the full ComputedStyle as defined by the request whitelist.",
+                    "experimental": true
+                }
+            ],
+            "commands": [
+                {
+                    "name": "enable",
+                    "description": "Enables the CSS agent for the given page. Clients should not assume that the CSS agent has been enabled until the result of this command is received."
+                },
+                {
+                    "name": "disable",
+                    "description": "Disables the CSS agent for the given page."
+                },
+                {
+                    "name": "getMatchedStylesForNode",
+                    "parameters": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "DOM.NodeId"
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "inlineStyle",
+                            "$ref": "CSSStyle",
+                            "optional": true,
+                            "description": "Inline style for the specified DOM node."
+                        },
+                        {
+                            "name": "attributesStyle",
+                            "$ref": "CSSStyle",
+                            "optional": true,
+                            "description": "Attribute-defined element style (e.g. resulting from \"width=20 height=100%\")."
+                        },
+                        {
+                            "name": "matchedCSSRules",
+                            "type": "array",
+                            "items": {
+                                "$ref": "RuleMatch"
+                            },
+                            "optional": true,
+                            "description": "CSS rules matching this node, from all applicable stylesheets."
+                        },
+                        {
+                            "name": "pseudoElements",
+                            "type": "array",
+                            "items": {
+                                "$ref": "PseudoElementMatches"
+                            },
+                            "optional": true,
+                            "description": "Pseudo style matches for this node."
+                        },
+                        {
+                            "name": "inherited",
+                            "type": "array",
+                            "items": {
+                                "$ref": "InheritedStyleEntry"
+                            },
+                            "optional": true,
+                            "description": "A chain of inherited styles (from the immediate node parent up to the DOM tree root)."
+                        },
+                        {
+                            "name": "cssKeyframesRules",
+                            "type": "array",
+                            "items": {
+                                "$ref": "CSSKeyframesRule"
+                            },
+                            "optional": true,
+                            "description": "A list of CSS keyframed animations matching this node."
+                        }
+                    ],
+                    "description": "Returns requested styles for a DOM node identified by <code>nodeId</code>."
+                },
+                {
+                    "name": "getInlineStylesForNode",
+                    "parameters": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "DOM.NodeId"
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "inlineStyle",
+                            "$ref": "CSSStyle",
+                            "optional": true,
+                            "description": "Inline style for the specified DOM node."
+                        },
+                        {
+                            "name": "attributesStyle",
+                            "$ref": "CSSStyle",
+                            "optional": true,
+                            "description": "Attribute-defined element style (e.g. resulting from \"width=20 height=100%\")."
+                        }
+                    ],
+                    "description": "Returns the styles defined inline (explicitly in the \"style\" attribute and implicitly, using DOM attributes) for a DOM node identified by <code>nodeId</code>."
+                },
+                {
+                    "name": "getComputedStyleForNode",
+                    "parameters": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "DOM.NodeId"
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "computedStyle",
+                            "type": "array",
+                            "items": {
+                                "$ref": "CSSComputedStyleProperty"
+                            },
+                            "description": "Computed style for the specified DOM node."
+                        }
+                    ],
+                    "description": "Returns the computed style for a DOM node identified by <code>nodeId</code>."
+                },
+                {
+                    "name": "getPlatformFontsForNode",
+                    "parameters": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "DOM.NodeId"
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "fonts",
+                            "type": "array",
+                            "items": {
+                                "$ref": "PlatformFontUsage"
+                            },
+                            "description": "Usage statistics for every employed platform font."
+                        }
+                    ],
+                    "description": "Requests information about platform fonts which we used to render child TextNodes in the given node.",
+                    "experimental": true
+                },
+                {
+                    "name": "getStyleSheetText",
+                    "parameters": [
+                        {
+                            "name": "styleSheetId",
+                            "$ref": "StyleSheetId"
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "text",
+                            "type": "string",
+                            "description": "The stylesheet text."
+                        }
+                    ],
+                    "description": "Returns the current textual content and the URL for a stylesheet."
+                },
+                {
+                    "name": "collectClassNames",
+                    "parameters": [
+                        {
+                            "name": "styleSheetId",
+                            "$ref": "StyleSheetId"
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "classNames",
+                            "type": "array",
+                            "items": {
+                                "type": "string"
+                            },
+                            "description": "Class name list."
+                        }
+                    ],
+                    "description": "Returns all class names from specified stylesheet.",
+                    "experimental": true
+                },
+                {
+                    "name": "setStyleSheetText",
+                    "parameters": [
+                        {
+                            "name": "styleSheetId",
+                            "$ref": "StyleSheetId"
+                        },
+                        {
+                            "name": "text",
+                            "type": "string"
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "sourceMapURL",
+                            "type": "string",
+                            "optional": true,
+                            "description": "URL of source map associated with script (if any)."
+                        }
+                    ],
+                    "description": "Sets the new stylesheet text."
+                },
+                {
+                    "name": "setRuleSelector",
+                    "parameters": [
+                        {
+                            "name": "styleSheetId",
+                            "$ref": "StyleSheetId"
+                        },
+                        {
+                            "name": "range",
+                            "$ref": "SourceRange"
+                        },
+                        {
+                            "name": "selector",
+                            "type": "string"
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "selectorList",
+                            "$ref": "SelectorList",
+                            "description": "The resulting selector list after modification."
+                        }
+                    ],
+                    "description": "Modifies the rule selector."
+                },
+                {
+                    "name": "setKeyframeKey",
+                    "parameters": [
+                        {
+                            "name": "styleSheetId",
+                            "$ref": "StyleSheetId"
+                        },
+                        {
+                            "name": "range",
+                            "$ref": "SourceRange"
+                        },
+                        {
+                            "name": "keyText",
+                            "type": "string"
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "keyText",
+                            "$ref": "Value",
+                            "description": "The resulting key text after modification."
+                        }
+                    ],
+                    "description": "Modifies the keyframe rule key text."
+                },
+                {
+                    "name": "setStyleTexts",
+                    "parameters": [
+                        {
+                            "name": "edits",
+                            "type": "array",
+                            "items": {
+                                "$ref": "StyleDeclarationEdit"
+                            }
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "styles",
+                            "type": "array",
+                            "items": {
+                                "$ref": "CSSStyle"
+                            },
+                            "description": "The resulting styles after modification."
+                        }
+                    ],
+                    "description": "Applies specified style edits one after another in the given order."
+                },
+                {
+                    "name": "setMediaText",
+                    "parameters": [
+                        {
+                            "name": "styleSheetId",
+                            "$ref": "StyleSheetId"
+                        },
+                        {
+                            "name": "range",
+                            "$ref": "SourceRange"
+                        },
+                        {
+                            "name": "text",
+                            "type": "string"
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "media",
+                            "$ref": "CSSMedia",
+                            "description": "The resulting CSS media rule after modification."
+                        }
+                    ],
+                    "description": "Modifies the rule selector."
+                },
+                {
+                    "name": "createStyleSheet",
+                    "parameters": [
+                        {
+                            "name": "frameId",
+                            "$ref": "Page.FrameId",
+                            "description": "Identifier of the frame where \"via-inspector\" stylesheet should be created."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "styleSheetId",
+                            "$ref": "StyleSheetId",
+                            "description": "Identifier of the created \"via-inspector\" stylesheet."
+                        }
+                    ],
+                    "description": "Creates a new special \"via-inspector\" stylesheet in the frame with given <code>frameId</code>."
+                },
+                {
+                    "name": "addRule",
+                    "parameters": [
+                        {
+                            "name": "styleSheetId",
+                            "$ref": "StyleSheetId",
+                            "description": "The css style sheet identifier where a new rule should be inserted."
+                        },
+                        {
+                            "name": "ruleText",
+                            "type": "string",
+                            "description": "The text of a new rule."
+                        },
+                        {
+                            "name": "location",
+                            "$ref": "SourceRange",
+                            "description": "Text position of a new rule in the target style sheet."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "rule",
+                            "$ref": "CSSRule",
+                            "description": "The newly created rule."
+                        }
+                    ],
+                    "description": "Inserts a new rule with the given <code>ruleText</code> in a stylesheet with given <code>styleSheetId</code>, at the position specified by <code>location</code>."
+                },
+                {
+                    "name": "forcePseudoState",
+                    "parameters": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "DOM.NodeId",
+                            "description": "The element id for which to force the pseudo state."
+                        },
+                        {
+                            "name": "forcedPseudoClasses",
+                            "type": "array",
+                            "items": {
+                                "type": "string",
+                                "enum": [
+                                    "active",
+                                    "focus",
+                                    "hover",
+                                    "visited"
+                                ]
+                            },
+                            "description": "Element pseudo classes to force when computing the element's style."
+                        }
+                    ],
+                    "description": "Ensures that the given node will have specified pseudo-classes whenever its style is computed by the browser."
+                },
+                {
+                    "name": "getMediaQueries",
+                    "returns": [
+                        {
+                            "name": "medias",
+                            "type": "array",
+                            "items": {
+                                "$ref": "CSSMedia"
+                            }
+                        }
+                    ],
+                    "description": "Returns all media queries parsed by the rendering engine.",
+                    "experimental": true
+                },
+                {
+                    "name": "setEffectivePropertyValueForNode",
+                    "parameters": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "DOM.NodeId",
+                            "description": "The element id for which to set property."
+                        },
+                        {
+                            "name": "propertyName",
+                            "type": "string"
+                        },
+                        {
+                            "name": "value",
+                            "type": "string"
+                        }
+                    ],
+                    "description": "Find a rule with the given active property for the given node and set the new value for this property",
+                    "experimental": true
+                },
+                {
+                    "name": "getBackgroundColors",
+                    "parameters": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "DOM.NodeId",
+                            "description": "Id of the node to get background colors for."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "backgroundColors",
+                            "type": "array",
+                            "items": {
+                                "type": "string"
+                            },
+                            "description": "The range of background colors behind this element, if it contains any visible text. If no visible text is present, this will be undefined. In the case of a flat background color, this will consist of simply that color. In the case of a gradient, this will consist of each of the color stops. For anything more complicated, this will be an empty array. Images will be ignored (as if the image had failed to load).",
+                            "optional": true
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "name": "getLayoutTreeAndStyles",
+                    "parameters": [
+                        {
+                            "name": "computedStyleWhitelist",
+                            "type": "array",
+                            "items": {
+                                "type": "string"
+                            },
+                            "description": "Whitelist of computed styles to return."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "layoutTreeNodes",
+                            "type": "array",
+                            "items": {
+                                "$ref": "LayoutTreeNode"
+                            }
+                        },
+                        {
+                            "name": "computedStyles",
+                            "type": "array",
+                            "items": {
+                                "$ref": "ComputedStyle"
+                            }
+                        }
+                    ],
+                    "description": "For the main document and any content documents, return the LayoutTreeNodes and a whitelisted subset of the computed style. It only returns pushed nodes, on way to pull all nodes is to call DOM.getDocument with a depth of -1.",
+                    "experimental": true
+                },
+                {
+                    "name": "startRuleUsageTracking",
+                    "description": "Enables the selector recording.",
+                    "experimental": true
+                },
+                {
+                    "name": "takeCoverageDelta",
+                    "description": "Obtain list of rules that became used since last call to this method (or since start of coverage instrumentation)",
+                    "returns": [
+                        {
+                            "name": "coverage",
+                            "type": "array",
+                            "items": {
+                                "$ref": "RuleUsage"
+                            }
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "name": "stopRuleUsageTracking",
+                    "returns": [
+                        {
+                            "name": "ruleUsage",
+                            "type": "array",
+                            "items": {
+                                "$ref": "RuleUsage"
+                            }
+                        }
+                    ],
+                    "description": "The list of rules with an indication of whether these were used",
+                    "experimental": true
+                }
+            ],
+            "events": [
+                {
+                    "name": "mediaQueryResultChanged",
+                    "description": "Fires whenever a MediaQuery result changes (for example, after a browser window has been resized.) The current implementation considers only viewport-dependent media features."
+                },
+                {
+                    "name": "fontsUpdated",
+                    "description": "Fires whenever a web font gets loaded."
+                },
+                {
+                    "name": "styleSheetChanged",
+                    "parameters": [
+                        {
+                            "name": "styleSheetId",
+                            "$ref": "StyleSheetId"
+                        }
+                    ],
+                    "description": "Fired whenever a stylesheet is changed as a result of the client operation."
+                },
+                {
+                    "name": "styleSheetAdded",
+                    "parameters": [
+                        {
+                            "name": "header",
+                            "$ref": "CSSStyleSheetHeader",
+                            "description": "Added stylesheet metainfo."
+                        }
+                    ],
+                    "description": "Fired whenever an active document stylesheet is added."
+                },
+                {
+                    "name": "styleSheetRemoved",
+                    "parameters": [
+                        {
+                            "name": "styleSheetId",
+                            "$ref": "StyleSheetId",
+                            "description": "Identifier of the removed stylesheet."
+                        }
+                    ],
+                    "description": "Fired whenever an active document stylesheet is removed."
+                }
+            ]
+        },
+        {
+            "domain": "IO",
+            "description": "Input/Output operations for streams produced by DevTools.",
+            "experimental": true,
+            "types": [
+                {
+                    "id": "StreamHandle",
+                    "type": "string"
+                }
+            ],
+            "commands": [
+                {
+                    "name": "read",
+                    "description": "Read a chunk of the stream",
+                    "parameters": [
+                        {
+                            "name": "handle",
+                            "$ref": "StreamHandle",
+                            "description": "Handle of the stream to read."
+                        },
+                        {
+                            "name": "offset",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "Seek to the specified offset before reading (if not specificed, proceed with offset following the last read)."
+                        },
+                        {
+                            "name": "size",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "Maximum number of bytes to read (left upon the agent discretion if not specified)."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "data",
+                            "type": "string",
+                            "description": "Data that were read."
+                        },
+                        {
+                            "name": "eof",
+                            "type": "boolean",
+                            "description": "Set if the end-of-file condition occured while reading."
+                        }
+                    ]
+                },
+                {
+                    "name": "close",
+                    "description": "Close the stream, discard any temporary backing storage.",
+                    "parameters": [
+                        {
+                            "name": "handle",
+                            "$ref": "StreamHandle",
+                            "description": "Handle of the stream to close."
+                        }
+                    ]
+                }
+            ]
+        },
+        {
+            "domain": "DOMDebugger",
+            "description": "DOM debugging allows setting breakpoints on particular DOM operations and events. JavaScript execution will stop on these operations as if there was a regular breakpoint set.",
+            "dependencies": [
+                "DOM",
+                "Debugger"
+            ],
+            "types": [
+                {
+                    "id": "DOMBreakpointType",
+                    "type": "string",
+                    "enum": [
+                        "subtree-modified",
+                        "attribute-modified",
+                        "node-removed"
+                    ],
+                    "description": "DOM breakpoint type."
+                },
+                {
+                    "id": "EventListener",
+                    "type": "object",
+                    "description": "Object event listener.",
+                    "properties": [
+                        {
+                            "name": "type",
+                            "type": "string",
+                            "description": "<code>EventListener</code>'s type."
+                        },
+                        {
+                            "name": "useCapture",
+                            "type": "boolean",
+                            "description": "<code>EventListener</code>'s useCapture."
+                        },
+                        {
+                            "name": "passive",
+                            "type": "boolean",
+                            "description": "<code>EventListener</code>'s passive flag."
+                        },
+                        {
+                            "name": "once",
+                            "type": "boolean",
+                            "description": "<code>EventListener</code>'s once flag."
+                        },
+                        {
+                            "name": "scriptId",
+                            "$ref": "Runtime.ScriptId",
+                            "description": "Script id of the handler code."
+                        },
+                        {
+                            "name": "lineNumber",
+                            "type": "integer",
+                            "description": "Line number in the script (0-based)."
+                        },
+                        {
+                            "name": "columnNumber",
+                            "type": "integer",
+                            "description": "Column number in the script (0-based)."
+                        },
+                        {
+                            "name": "handler",
+                            "$ref": "Runtime.RemoteObject",
+                            "optional": true,
+                            "description": "Event handler function value."
+                        },
+                        {
+                            "name": "originalHandler",
+                            "$ref": "Runtime.RemoteObject",
+                            "optional": true,
+                            "description": "Event original handler function value."
+                        },
+                        {
+                            "name": "backendNodeId",
+                            "$ref": "DOM.BackendNodeId",
+                            "optional": true,
+                            "description": "Node the listener is added to (if any)."
+                        }
+                    ],
+                    "experimental": true
+                }
+            ],
+            "commands": [
+                {
+                    "name": "setDOMBreakpoint",
+                    "parameters": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "DOM.NodeId",
+                            "description": "Identifier of the node to set breakpoint on."
+                        },
+                        {
+                            "name": "type",
+                            "$ref": "DOMBreakpointType",
+                            "description": "Type of the operation to stop upon."
+                        }
+                    ],
+                    "description": "Sets breakpoint on particular operation with DOM."
+                },
+                {
+                    "name": "removeDOMBreakpoint",
+                    "parameters": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "DOM.NodeId",
+                            "description": "Identifier of the node to remove breakpoint from."
+                        },
+                        {
+                            "name": "type",
+                            "$ref": "DOMBreakpointType",
+                            "description": "Type of the breakpoint to remove."
+                        }
+                    ],
+                    "description": "Removes DOM breakpoint that was set using <code>setDOMBreakpoint</code>."
+                },
+                {
+                    "name": "setEventListenerBreakpoint",
+                    "parameters": [
+                        {
+                            "name": "eventName",
+                            "type": "string",
+                            "description": "DOM Event name to stop on (any DOM event will do)."
+                        },
+                        {
+                            "name": "targetName",
+                            "type": "string",
+                            "optional": true,
+                            "description": "EventTarget interface name to stop on. If equal to <code>\"*\"</code> or not provided, will stop on any EventTarget.",
+                            "experimental": true
+                        }
+                    ],
+                    "description": "Sets breakpoint on particular DOM event."
+                },
+                {
+                    "name": "removeEventListenerBreakpoint",
+                    "parameters": [
+                        {
+                            "name": "eventName",
+                            "type": "string",
+                            "description": "Event name."
+                        },
+                        {
+                            "name": "targetName",
+                            "type": "string",
+                            "optional": true,
+                            "description": "EventTarget interface name.",
+                            "experimental": true
+                        }
+                    ],
+                    "description": "Removes breakpoint on particular DOM event."
+                },
+                {
+                    "name": "setInstrumentationBreakpoint",
+                    "parameters": [
+                        {
+                            "name": "eventName",
+                            "type": "string",
+                            "description": "Instrumentation name to stop on."
+                        }
+                    ],
+                    "description": "Sets breakpoint on particular native event.",
+                    "experimental": true
+                },
+                {
+                    "name": "removeInstrumentationBreakpoint",
+                    "parameters": [
+                        {
+                            "name": "eventName",
+                            "type": "string",
+                            "description": "Instrumentation name to stop on."
+                        }
+                    ],
+                    "description": "Removes breakpoint on particular native event.",
+                    "experimental": true
+                },
+                {
+                    "name": "setXHRBreakpoint",
+                    "parameters": [
+                        {
+                            "name": "url",
+                            "type": "string",
+                            "description": "Resource URL substring. All XHRs having this substring in the URL will get stopped upon."
+                        }
+                    ],
+                    "description": "Sets breakpoint on XMLHttpRequest."
+                },
+                {
+                    "name": "removeXHRBreakpoint",
+                    "parameters": [
+                        {
+                            "name": "url",
+                            "type": "string",
+                            "description": "Resource URL substring."
+                        }
+                    ],
+                    "description": "Removes breakpoint from XMLHttpRequest."
+                },
+                {
+                    "name": "getEventListeners",
+                    "experimental": true,
+                    "parameters": [
+                        {
+                            "name": "objectId",
+                            "$ref": "Runtime.RemoteObjectId",
+                            "description": "Identifier of the object to return listeners for."
+                        },
+                        {
+                            "name": "depth",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "The maximum depth at which Node children should be retrieved, defaults to 1. Use -1 for the entire subtree or provide an integer larger than 0.",
+                            "experimental": true
+                        },
+                        {
+                            "name": "pierce",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Whether or not iframes and shadow roots should be traversed when returning the subtree (default is false). Reports listeners for all contexts if pierce is enabled.",
+                            "experimental": true
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "listeners",
+                            "type": "array",
+                            "items": {
+                                "$ref": "EventListener"
+                            },
+                            "description": "Array of relevant listeners."
+                        }
+                    ],
+                    "description": "Returns event listeners of the given object."
+                }
+            ]
+        },
+        {
+            "domain": "Target",
+            "description": "Supports additional targets discovery and allows to attach to them.",
+            "experimental": true,
+            "types": [
+                {
+                    "id": "TargetID",
+                    "type": "string"
+                },
+                {
+                    "id": "BrowserContextID",
+                    "type": "string"
+                },
+                {
+                    "id": "TargetInfo",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "targetId",
+                            "$ref": "TargetID"
+                        },
+                        {
+                            "name": "type",
+                            "type": "string"
+                        },
+                        {
+                            "name": "title",
+                            "type": "string"
+                        },
+                        {
+                            "name": "url",
+                            "type": "string"
+                        }
+                    ]
+                },
+                {
+                    "id": "RemoteLocation",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "host",
+                            "type": "string"
+                        },
+                        {
+                            "name": "port",
+                            "type": "integer"
+                        }
+                    ]
+                }
+            ],
+            "commands": [
+                {
+                    "name": "setDiscoverTargets",
+                    "description": "Controls whether to discover available targets and notify via <code>targetCreated/targetDestroyed</code> events.",
+                    "parameters": [
+                        {
+                            "name": "discover",
+                            "type": "boolean",
+                            "description": "Whether to discover available targets."
+                        }
+                    ]
+                },
+                {
+                    "name": "setAutoAttach",
+                    "description": "Controls whether to automatically attach to new targets which are considered to be related to this one. When turned on, attaches to all existing related targets as well. When turned off, automatically detaches from all currently attached targets.",
+                    "parameters": [
+                        {
+                            "name": "autoAttach",
+                            "type": "boolean",
+                            "description": "Whether to auto-attach to related targets."
+                        },
+                        {
+                            "name": "waitForDebuggerOnStart",
+                            "type": "boolean",
+                            "description": "Whether to pause new targets when attaching to them. Use <code>Runtime.runIfWaitingForDebugger</code> to run paused targets."
+                        }
+                    ]
+                },
+                {
+                    "name": "setAttachToFrames",
+                    "parameters": [
+                        {
+                            "name": "value",
+                            "type": "boolean",
+                            "description": "Whether to attach to frames."
+                        }
+                    ]
+                },
+                {
+                    "name": "setRemoteLocations",
+                    "description": "Enables target discovery for the specified locations, when <code>setDiscoverTargets</code> was set to <code>true</code>.",
+                    "parameters": [
+                        {
+                            "name": "locations",
+                            "type": "array",
+                            "items": {
+                                "$ref": "RemoteLocation"
+                            },
+                            "description": "List of remote locations."
+                        }
+                    ]
+                },
+                {
+                    "name": "sendMessageToTarget",
+                    "description": "Sends protocol message to the target with given id.",
+                    "parameters": [
+                        {
+                            "name": "targetId",
+                            "$ref": "TargetID"
+                        },
+                        {
+                            "name": "message",
+                            "type": "string"
+                        }
+                    ]
+                },
+                {
+                    "name": "getTargetInfo",
+                    "description": "Returns information about a target.",
+                    "parameters": [
+                        {
+                            "name": "targetId",
+                            "$ref": "TargetID"
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "targetInfo",
+                            "$ref": "TargetInfo"
+                        }
+                    ]
+                },
+                {
+                    "name": "activateTarget",
+                    "description": "Activates (focuses) the target.",
+                    "parameters": [
+                        {
+                            "name": "targetId",
+                            "$ref": "TargetID"
+                        }
+                    ]
+                },
+                {
+                    "name": "closeTarget",
+                    "description": "Closes the target. If the target is a page that gets closed too.",
+                    "parameters": [
+                        {
+                            "name": "targetId",
+                            "$ref": "TargetID"
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "success",
+                            "type": "boolean"
+                        }
+                    ]
+                },
+                {
+                    "name": "attachToTarget",
+                    "description": "Attaches to the target with given id.",
+                    "parameters": [
+                        {
+                            "name": "targetId",
+                            "$ref": "TargetID"
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "success",
+                            "type": "boolean",
+                            "description": "Whether attach succeeded."
+                        }
+                    ]
+                },
+                {
+                    "name": "detachFromTarget",
+                    "description": "Detaches from the target with given id.",
+                    "parameters": [
+                        {
+                            "name": "targetId",
+                            "$ref": "TargetID"
+                        }
+                    ]
+                },
+                {
+                    "name": "createBrowserContext",
+                    "description": "Creates a new empty BrowserContext. Similar to an incognito profile but you can have more than one.",
+                    "returns": [
+                        {
+                            "name": "browserContextId",
+                            "$ref": "BrowserContextID",
+                            "description": "The id of the context created."
+                        }
+                    ]
+                },
+                {
+                    "name": "disposeBrowserContext",
+                    "description": "Deletes a BrowserContext, will fail of any open page uses it.",
+                    "parameters": [
+                        {
+                            "name": "browserContextId",
+                            "$ref": "BrowserContextID"
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "success",
+                            "type": "boolean"
+                        }
+                    ]
+                },
+                {
+                    "name": "createTarget",
+                    "description": "Creates a new page.",
+                    "parameters": [
+                        {
+                            "name": "url",
+                            "type": "string",
+                            "description": "The initial URL the page will be navigated to."
+                        },
+                        {
+                            "name": "width",
+                            "type": "integer",
+                            "description": "Frame width in DIP (headless chrome only).",
+                            "optional": true
+                        },
+                        {
+                            "name": "height",
+                            "type": "integer",
+                            "description": "Frame height in DIP (headless chrome only).",
+                            "optional": true
+                        },
+                        {
+                            "name": "browserContextId",
+                            "$ref": "BrowserContextID",
+                            "description": "The browser context to create the page in (headless chrome only).",
+                            "optional": true
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "targetId",
+                            "$ref": "TargetID",
+                            "description": "The id of the page opened."
+                        }
+                    ]
+                },
+                {
+                    "name": "getTargets",
+                    "description": "Retrieves a list of available targets.",
+                    "returns": [
+                        {
+                            "name": "targetInfos",
+                            "type": "array",
+                            "items": {
+                                "$ref": "TargetInfo"
+                            },
+                            "description": "The list of targets."
+                        }
+                    ]
+                }
+            ],
+            "events": [
+                {
+                    "name": "targetCreated",
+                    "description": "Issued when a possible inspection target is created.",
+                    "parameters": [
+                        {
+                            "name": "targetInfo",
+                            "$ref": "TargetInfo"
+                        }
+                    ]
+                },
+                {
+                    "name": "targetDestroyed",
+                    "description": "Issued when a target is destroyed.",
+                    "parameters": [
+                        {
+                            "name": "targetId",
+                            "$ref": "TargetID"
+                        }
+                    ]
+                },
+                {
+                    "name": "attachedToTarget",
+                    "description": "Issued when attached to target because of auto-attach or <code>attachToTarget</code> command.",
+                    "parameters": [
+                        {
+                            "name": "targetInfo",
+                            "$ref": "TargetInfo"
+                        },
+                        {
+                            "name": "waitingForDebugger",
+                            "type": "boolean"
+                        }
+                    ]
+                },
+                {
+                    "name": "detachedFromTarget",
+                    "description": "Issued when detached from target for any reason (including <code>detachFromTarget</code> command).",
+                    "parameters": [
+                        {
+                            "name": "targetId",
+                            "$ref": "TargetID"
+                        }
+                    ]
+                },
+                {
+                    "name": "receivedMessageFromTarget",
+                    "description": "Notifies about new protocol message from attached target.",
+                    "parameters": [
+                        {
+                            "name": "targetId",
+                            "$ref": "TargetID"
+                        },
+                        {
+                            "name": "message",
+                            "type": "string"
+                        }
+                    ]
+                }
+            ]
+        },
+        {
+            "domain": "ServiceWorker",
+            "experimental": true,
+            "types": [
+                {
+                    "id": "ServiceWorkerRegistration",
+                    "type": "object",
+                    "description": "ServiceWorker registration.",
+                    "properties": [
+                        {
+                            "name": "registrationId",
+                            "type": "string"
+                        },
+                        {
+                            "name": "scopeURL",
+                            "type": "string"
+                        },
+                        {
+                            "name": "isDeleted",
+                            "type": "boolean"
+                        }
+                    ]
+                },
+                {
+                    "id": "ServiceWorkerVersionRunningStatus",
+                    "type": "string",
+                    "enum": [
+                        "stopped",
+                        "starting",
+                        "running",
+                        "stopping"
+                    ]
+                },
+                {
+                    "id": "ServiceWorkerVersionStatus",
+                    "type": "string",
+                    "enum": [
+                        "new",
+                        "installing",
+                        "installed",
+                        "activating",
+                        "activated",
+                        "redundant"
+                    ]
+                },
+                {
+                    "id": "ServiceWorkerVersion",
+                    "type": "object",
+                    "description": "ServiceWorker version.",
+                    "properties": [
+                        {
+                            "name": "versionId",
+                            "type": "string"
+                        },
+                        {
+                            "name": "registrationId",
+                            "type": "string"
+                        },
+                        {
+                            "name": "scriptURL",
+                            "type": "string"
+                        },
+                        {
+                            "name": "runningStatus",
+                            "$ref": "ServiceWorkerVersionRunningStatus"
+                        },
+                        {
+                            "name": "status",
+                            "$ref": "ServiceWorkerVersionStatus"
+                        },
+                        {
+                            "name": "scriptLastModified",
+                            "type": "number",
+                            "optional": true,
+                            "description": "The Last-Modified header value of the main script."
+                        },
+                        {
+                            "name": "scriptResponseTime",
+                            "type": "number",
+                            "optional": true,
+                            "description": "The time at which the response headers of the main script were received from the server.  For cached script it is the last time the cache entry was validated."
+                        },
+                        {
+                            "name": "controlledClients",
+                            "type": "array",
+                            "optional": true,
+                            "items": {
+                                "$ref": "Target.TargetID"
+                            }
+                        },
+                        {
+                            "name": "targetId",
+                            "$ref": "Target.TargetID",
+                            "optional": true
+                        }
+                    ]
+                },
+                {
+                    "id": "ServiceWorkerErrorMessage",
+                    "type": "object",
+                    "description": "ServiceWorker error message.",
+                    "properties": [
+                        {
+                            "name": "errorMessage",
+                            "type": "string"
+                        },
+                        {
+                            "name": "registrationId",
+                            "type": "string"
+                        },
+                        {
+                            "name": "versionId",
+                            "type": "string"
+                        },
+                        {
+                            "name": "sourceURL",
+                            "type": "string"
+                        },
+                        {
+                            "name": "lineNumber",
+                            "type": "integer"
+                        },
+                        {
+                            "name": "columnNumber",
+                            "type": "integer"
+                        }
+                    ]
+                }
+            ],
+            "commands": [
+                {
+                    "name": "enable"
+                },
+                {
+                    "name": "disable"
+                },
+                {
+                    "name": "unregister",
+                    "parameters": [
+                        {
+                            "name": "scopeURL",
+                            "type": "string"
+                        }
+                    ]
+                },
+                {
+                    "name": "updateRegistration",
+                    "parameters": [
+                        {
+                            "name": "scopeURL",
+                            "type": "string"
+                        }
+                    ]
+                },
+                {
+                    "name": "startWorker",
+                    "parameters": [
+                        {
+                            "name": "scopeURL",
+                            "type": "string"
+                        }
+                    ]
+                },
+                {
+                    "name": "skipWaiting",
+                    "parameters": [
+                        {
+                            "name": "scopeURL",
+                            "type": "string"
+                        }
+                    ]
+                },
+                {
+                    "name": "stopWorker",
+                    "parameters": [
+                        {
+                            "name": "versionId",
+                            "type": "string"
+                        }
+                    ]
+                },
+                {
+                    "name": "inspectWorker",
+                    "parameters": [
+                        {
+                            "name": "versionId",
+                            "type": "string"
+                        }
+                    ]
+                },
+                {
+                    "name": "setForceUpdateOnPageLoad",
+                    "parameters": [
+                        {
+                            "name": "forceUpdateOnPageLoad",
+                            "type": "boolean"
+                        }
+                    ]
+                },
+                {
+                    "name": "deliverPushMessage",
+                    "parameters": [
+                        {
+                            "name": "origin",
+                            "type": "string"
+                        },
+                        {
+                            "name": "registrationId",
+                            "type": "string"
+                        },
+                        {
+                            "name": "data",
+                            "type": "string"
+                        }
+                    ]
+                },
+                {
+                    "name": "dispatchSyncEvent",
+                    "parameters": [
+                        {
+                            "name": "origin",
+                            "type": "string"
+                        },
+                        {
+                            "name": "registrationId",
+                            "type": "string"
+                        },
+                        {
+                            "name": "tag",
+                            "type": "string"
+                        },
+                        {
+                            "name": "lastChance",
+                            "type": "boolean"
+                        }
+                    ]
+                }
+            ],
+            "events": [
+                {
+                    "name": "workerRegistrationUpdated",
+                    "parameters": [
+                        {
+                            "name": "registrations",
+                            "type": "array",
+                            "items": {
+                                "$ref": "ServiceWorkerRegistration"
+                            }
+                        }
+                    ]
+                },
+                {
+                    "name": "workerVersionUpdated",
+                    "parameters": [
+                        {
+                            "name": "versions",
+                            "type": "array",
+                            "items": {
+                                "$ref": "ServiceWorkerVersion"
+                            }
+                        }
+                    ]
+                },
+                {
+                    "name": "workerErrorReported",
+                    "parameters": [
+                        {
+                            "name": "errorMessage",
+                            "$ref": "ServiceWorkerErrorMessage"
+                        }
+                    ]
+                }
+            ]
+        },
+        {
+            "domain": "Input",
+            "types": [
+                {
+                    "id": "TouchPoint",
+                    "type": "object",
+                    "experimental": true,
+                    "properties": [
+                        {
+                            "name": "state",
+                            "type": "string",
+                            "enum": [
+                                "touchPressed",
+                                "touchReleased",
+                                "touchMoved",
+                                "touchStationary",
+                                "touchCancelled"
+                            ],
+                            "description": "State of the touch point."
+                        },
+                        {
+                            "name": "x",
+                            "type": "integer",
+                            "description": "X coordinate of the event relative to the main frame's viewport."
+                        },
+                        {
+                            "name": "y",
+                            "type": "integer",
+                            "description": "Y coordinate of the event relative to the main frame's viewport. 0 refers to the top of the viewport and Y increases as it proceeds towards the bottom of the viewport."
+                        },
+                        {
+                            "name": "radiusX",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "X radius of the touch area (default: 1)."
+                        },
+                        {
+                            "name": "radiusY",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "Y radius of the touch area (default: 1)."
+                        },
+                        {
+                            "name": "rotationAngle",
+                            "type": "number",
+                            "optional": true,
+                            "description": "Rotation angle (default: 0.0)."
+                        },
+                        {
+                            "name": "force",
+                            "type": "number",
+                            "optional": true,
+                            "description": "Force (default: 1.0)."
+                        },
+                        {
+                            "name": "id",
+                            "type": "number",
+                            "optional": true,
+                            "description": "Identifier used to track touch sources between events, must be unique within an event."
+                        }
+                    ]
+                },
+                {
+                    "id": "GestureSourceType",
+                    "type": "string",
+                    "experimental": true,
+                    "enum": [
+                        "default",
+                        "touch",
+                        "mouse"
+                    ]
+                }
+            ],
+            "commands": [
+                {
+                    "name": "setIgnoreInputEvents",
+                    "parameters": [
+                        {
+                            "name": "ignore",
+                            "type": "boolean",
+                            "description": "Ignores input events processing when set to true."
+                        }
+                    ],
+                    "description": "Ignores input events (useful while auditing page)."
+                },
+                {
+                    "name": "dispatchKeyEvent",
+                    "parameters": [
+                        {
+                            "name": "type",
+                            "type": "string",
+                            "enum": [
+                                "keyDown",
+                                "keyUp",
+                                "rawKeyDown",
+                                "char"
+                            ],
+                            "description": "Type of the key event."
+                        },
+                        {
+                            "name": "modifiers",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "Bit field representing pressed modifier keys. Alt=1, Ctrl=2, Meta/Command=4, Shift=8 (default: 0)."
+                        },
+                        {
+                            "name": "timestamp",
+                            "type": "number",
+                            "optional": true,
+                            "description": "Time at which the event occurred. Measured in UTC time in seconds since January 1, 1970 (default: current time)."
+                        },
+                        {
+                            "name": "text",
+                            "type": "string",
+                            "optional": true,
+                            "description": "Text as generated by processing a virtual key code with a keyboard layout. Not needed for for <code>keyUp</code> and <code>rawKeyDown</code> events (default: \"\")"
+                        },
+                        {
+                            "name": "unmodifiedText",
+                            "type": "string",
+                            "optional": true,
+                            "description": "Text that would have been generated by the keyboard if no modifiers were pressed (except for shift). Useful for shortcut (accelerator) key handling (default: \"\")."
+                        },
+                        {
+                            "name": "keyIdentifier",
+                            "type": "string",
+                            "optional": true,
+                            "description": "Unique key identifier (e.g., 'U+0041') (default: \"\")."
+                        },
+                        {
+                            "name": "code",
+                            "type": "string",
+                            "optional": true,
+                            "description": "Unique DOM defined string value for each physical key (e.g., 'KeyA') (default: \"\")."
+                        },
+                        {
+                            "name": "key",
+                            "type": "string",
+                            "optional": true,
+                            "description": "Unique DOM defined string value describing the meaning of the key in the context of active modifiers, keyboard layout, etc (e.g., 'AltGr') (default: \"\")."
+                        },
+                        {
+                            "name": "windowsVirtualKeyCode",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "Windows virtual key code (default: 0)."
+                        },
+                        {
+                            "name": "nativeVirtualKeyCode",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "Native virtual key code (default: 0)."
+                        },
+                        {
+                            "name": "autoRepeat",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Whether the event was generated from auto repeat (default: false)."
+                        },
+                        {
+                            "name": "isKeypad",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Whether the event was generated from the keypad (default: false)."
+                        },
+                        {
+                            "name": "isSystemKey",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Whether the event was a system key event (default: false)."
+                        }
+                    ],
+                    "description": "Dispatches a key event to the page."
+                },
+                {
+                    "name": "dispatchMouseEvent",
+                    "parameters": [
+                        {
+                            "name": "type",
+                            "type": "string",
+                            "enum": [
+                                "mousePressed",
+                                "mouseReleased",
+                                "mouseMoved"
+                            ],
+                            "description": "Type of the mouse event."
+                        },
+                        {
+                            "name": "x",
+                            "type": "integer",
+                            "description": "X coordinate of the event relative to the main frame's viewport."
+                        },
+                        {
+                            "name": "y",
+                            "type": "integer",
+                            "description": "Y coordinate of the event relative to the main frame's viewport. 0 refers to the top of the viewport and Y increases as it proceeds towards the bottom of the viewport."
+                        },
+                        {
+                            "name": "modifiers",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "Bit field representing pressed modifier keys. Alt=1, Ctrl=2, Meta/Command=4, Shift=8 (default: 0)."
+                        },
+                        {
+                            "name": "timestamp",
+                            "type": "number",
+                            "optional": true,
+                            "description": "Time at which the event occurred. Measured in UTC time in seconds since January 1, 1970 (default: current time)."
+                        },
+                        {
+                            "name": "button",
+                            "type": "string",
+                            "enum": [
+                                "none",
+                                "left",
+                                "middle",
+                                "right"
+                            ],
+                            "optional": true,
+                            "description": "Mouse button (default: \"none\")."
+                        },
+                        {
+                            "name": "clickCount",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "Number of times the mouse button was clicked (default: 0)."
+                        }
+                    ],
+                    "description": "Dispatches a mouse event to the page."
+                },
+                {
+                    "name": "dispatchTouchEvent",
+                    "experimental": true,
+                    "parameters": [
+                        {
+                            "name": "type",
+                            "type": "string",
+                            "enum": [
+                                "touchStart",
+                                "touchEnd",
+                                "touchMove"
+                            ],
+                            "description": "Type of the touch event."
+                        },
+                        {
+                            "name": "touchPoints",
+                            "type": "array",
+                            "items": {
+                                "$ref": "TouchPoint"
+                            },
+                            "description": "Touch points."
+                        },
+                        {
+                            "name": "modifiers",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "Bit field representing pressed modifier keys. Alt=1, Ctrl=2, Meta/Command=4, Shift=8 (default: 0)."
+                        },
+                        {
+                            "name": "timestamp",
+                            "type": "number",
+                            "optional": true,
+                            "description": "Time at which the event occurred. Measured in UTC time in seconds since January 1, 1970 (default: current time)."
+                        }
+                    ],
+                    "description": "Dispatches a touch event to the page."
+                },
+                {
+                    "name": "emulateTouchFromMouseEvent",
+                    "experimental": true,
+                    "parameters": [
+                        {
+                            "name": "type",
+                            "type": "string",
+                            "enum": [
+                                "mousePressed",
+                                "mouseReleased",
+                                "mouseMoved",
+                                "mouseWheel"
+                            ],
+                            "description": "Type of the mouse event."
+                        },
+                        {
+                            "name": "x",
+                            "type": "integer",
+                            "description": "X coordinate of the mouse pointer in DIP."
+                        },
+                        {
+                            "name": "y",
+                            "type": "integer",
+                            "description": "Y coordinate of the mouse pointer in DIP."
+                        },
+                        {
+                            "name": "timestamp",
+                            "type": "number",
+                            "description": "Time at which the event occurred. Measured in UTC time in seconds since January 1, 1970."
+                        },
+                        {
+                            "name": "button",
+                            "type": "string",
+                            "enum": [
+                                "none",
+                                "left",
+                                "middle",
+                                "right"
+                            ],
+                            "description": "Mouse button."
+                        },
+                        {
+                            "name": "deltaX",
+                            "type": "number",
+                            "optional": true,
+                            "description": "X delta in DIP for mouse wheel event (default: 0)."
+                        },
+                        {
+                            "name": "deltaY",
+                            "type": "number",
+                            "optional": true,
+                            "description": "Y delta in DIP for mouse wheel event (default: 0)."
+                        },
+                        {
+                            "name": "modifiers",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "Bit field representing pressed modifier keys. Alt=1, Ctrl=2, Meta/Command=4, Shift=8 (default: 0)."
+                        },
+                        {
+                            "name": "clickCount",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "Number of times the mouse button was clicked (default: 0)."
+                        }
+                    ],
+                    "description": "Emulates touch event from the mouse event parameters."
+                },
+                {
+                    "name": "synthesizePinchGesture",
+                    "parameters": [
+                        {
+                            "name": "x",
+                            "type": "integer",
+                            "description": "X coordinate of the start of the gesture in CSS pixels."
+                        },
+                        {
+                            "name": "y",
+                            "type": "integer",
+                            "description": "Y coordinate of the start of the gesture in CSS pixels."
+                        },
+                        {
+                            "name": "scaleFactor",
+                            "type": "number",
+                            "description": "Relative scale factor after zooming (>1.0 zooms in, <1.0 zooms out)."
+                        },
+                        {
+                            "name": "relativeSpeed",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "Relative pointer speed in pixels per second (default: 800)."
+                        },
+                        {
+                            "name": "gestureSourceType",
+                            "$ref": "GestureSourceType",
+                            "optional": true,
+                            "description": "Which type of input events to be generated (default: 'default', which queries the platform for the preferred input type)."
+                        }
+                    ],
+                    "description": "Synthesizes a pinch gesture over a time period by issuing appropriate touch events.",
+                    "experimental": true
+                },
+                {
+                    "name": "synthesizeScrollGesture",
+                    "parameters": [
+                        {
+                            "name": "x",
+                            "type": "integer",
+                            "description": "X coordinate of the start of the gesture in CSS pixels."
+                        },
+                        {
+                            "name": "y",
+                            "type": "integer",
+                            "description": "Y coordinate of the start of the gesture in CSS pixels."
+                        },
+                        {
+                            "name": "xDistance",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "The distance to scroll along the X axis (positive to scroll left)."
+                        },
+                        {
+                            "name": "yDistance",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "The distance to scroll along the Y axis (positive to scroll up)."
+                        },
+                        {
+                            "name": "xOverscroll",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "The number of additional pixels to scroll back along the X axis, in addition to the given distance."
+                        },
+                        {
+                            "name": "yOverscroll",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "The number of additional pixels to scroll back along the Y axis, in addition to the given distance."
+                        },
+                        {
+                            "name": "preventFling",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Prevent fling (default: true)."
+                        },
+                        {
+                            "name": "speed",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "Swipe speed in pixels per second (default: 800)."
+                        },
+                        {
+                            "name": "gestureSourceType",
+                            "$ref": "GestureSourceType",
+                            "optional": true,
+                            "description": "Which type of input events to be generated (default: 'default', which queries the platform for the preferred input type)."
+                        },
+                        {
+                            "name": "repeatCount",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "The number of times to repeat the gesture (default: 0)."
+                        },
+                        {
+                            "name": "repeatDelayMs",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "The number of milliseconds delay between each repeat. (default: 250)."
+                        },
+                        {
+                            "name": "interactionMarkerName",
+                            "type": "string",
+                            "optional": true,
+                            "description": "The name of the interaction markers to generate, if not empty (default: \"\")."
+                        }
+                    ],
+                    "description": "Synthesizes a scroll gesture over a time period by issuing appropriate touch events.",
+                    "experimental": true
+                },
+                {
+                    "name": "synthesizeTapGesture",
+                    "parameters": [
+                        {
+                            "name": "x",
+                            "type": "integer",
+                            "description": "X coordinate of the start of the gesture in CSS pixels."
+                        },
+                        {
+                            "name": "y",
+                            "type": "integer",
+                            "description": "Y coordinate of the start of the gesture in CSS pixels."
+                        },
+                        {
+                            "name": "duration",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "Duration between touchdown and touchup events in ms (default: 50)."
+                        },
+                        {
+                            "name": "tapCount",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "Number of times to perform the tap (e.g. 2 for double tap, default: 1)."
+                        },
+                        {
+                            "name": "gestureSourceType",
+                            "$ref": "GestureSourceType",
+                            "optional": true,
+                            "description": "Which type of input events to be generated (default: 'default', which queries the platform for the preferred input type)."
+                        }
+                    ],
+                    "description": "Synthesizes a tap gesture over a time period by issuing appropriate touch events.",
+                    "experimental": true
+                }
+            ],
+            "events": []
+        },
+        {
+            "domain": "LayerTree",
+            "experimental": true,
+            "dependencies": [
+                "DOM"
+            ],
+            "types": [
+                {
+                    "id": "LayerId",
+                    "type": "string",
+                    "description": "Unique Layer identifier."
+                },
+                {
+                    "id": "SnapshotId",
+                    "type": "string",
+                    "description": "Unique snapshot identifier."
+                },
+                {
+                    "id": "ScrollRect",
+                    "type": "object",
+                    "description": "Rectangle where scrolling happens on the main thread.",
+                    "properties": [
+                        {
+                            "name": "rect",
+                            "$ref": "DOM.Rect",
+                            "description": "Rectangle itself."
+                        },
+                        {
+                            "name": "type",
+                            "type": "string",
+                            "enum": [
+                                "RepaintsOnScroll",
+                                "TouchEventHandler",
+                                "WheelEventHandler"
+                            ],
+                            "description": "Reason for rectangle to force scrolling on the main thread"
+                        }
+                    ]
+                },
+                {
+                    "id": "PictureTile",
+                    "type": "object",
+                    "description": "Serialized fragment of layer picture along with its offset within the layer.",
+                    "properties": [
+                        {
+                            "name": "x",
+                            "type": "number",
+                            "description": "Offset from owning layer left boundary"
+                        },
+                        {
+                            "name": "y",
+                            "type": "number",
+                            "description": "Offset from owning layer top boundary"
+                        },
+                        {
+                            "name": "picture",
+                            "type": "string",
+                            "description": "Base64-encoded snapshot data."
+                        }
+                    ]
+                },
+                {
+                    "id": "Layer",
+                    "type": "object",
+                    "description": "Information about a compositing layer.",
+                    "properties": [
+                        {
+                            "name": "layerId",
+                            "$ref": "LayerId",
+                            "description": "The unique id for this layer."
+                        },
+                        {
+                            "name": "parentLayerId",
+                            "$ref": "LayerId",
+                            "optional": true,
+                            "description": "The id of parent (not present for root)."
+                        },
+                        {
+                            "name": "backendNodeId",
+                            "$ref": "DOM.BackendNodeId",
+                            "optional": true,
+                            "description": "The backend id for the node associated with this layer."
+                        },
+                        {
+                            "name": "offsetX",
+                            "type": "number",
+                            "description": "Offset from parent layer, X coordinate."
+                        },
+                        {
+                            "name": "offsetY",
+                            "type": "number",
+                            "description": "Offset from parent layer, Y coordinate."
+                        },
+                        {
+                            "name": "width",
+                            "type": "number",
+                            "description": "Layer width."
+                        },
+                        {
+                            "name": "height",
+                            "type": "number",
+                            "description": "Layer height."
+                        },
+                        {
+                            "name": "transform",
+                            "type": "array",
+                            "items": {
+                                "type": "number"
+                            },
+                            "minItems": 16,
+                            "maxItems": 16,
+                            "optional": true,
+                            "description": "Transformation matrix for layer, default is identity matrix"
+                        },
+                        {
+                            "name": "anchorX",
+                            "type": "number",
+                            "optional": true,
+                            "description": "Transform anchor point X, absent if no transform specified"
+                        },
+                        {
+                            "name": "anchorY",
+                            "type": "number",
+                            "optional": true,
+                            "description": "Transform anchor point Y, absent if no transform specified"
+                        },
+                        {
+                            "name": "anchorZ",
+                            "type": "number",
+                            "optional": true,
+                            "description": "Transform anchor point Z, absent if no transform specified"
+                        },
+                        {
+                            "name": "paintCount",
+                            "type": "integer",
+                            "description": "Indicates how many time this layer has painted."
+                        },
+                        {
+                            "name": "drawsContent",
+                            "type": "boolean",
+                            "description": "Indicates whether this layer hosts any content, rather than being used for transform/scrolling purposes only."
+                        },
+                        {
+                            "name": "invisible",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Set if layer is not visible."
+                        },
+                        {
+                            "name": "scrollRects",
+                            "type": "array",
+                            "items": {
+                                "$ref": "ScrollRect"
+                            },
+                            "optional": true,
+                            "description": "Rectangles scrolling on main thread only."
+                        }
+                    ]
+                },
+                {
+                    "id": "PaintProfile",
+                    "type": "array",
+                    "description": "Array of timings, one per paint step.",
+                    "items": {
+                        "type": "number",
+                        "description": "A time in seconds since the end of previous step (for the first step, time since painting started)"
+                    }
+                }
+            ],
+            "commands": [
+                {
+                    "name": "enable",
+                    "description": "Enables compositing tree inspection."
+                },
+                {
+                    "name": "disable",
+                    "description": "Disables compositing tree inspection."
+                },
+                {
+                    "name": "compositingReasons",
+                    "parameters": [
+                        {
+                            "name": "layerId",
+                            "$ref": "LayerId",
+                            "description": "The id of the layer for which we want to get the reasons it was composited."
+                        }
+                    ],
+                    "description": "Provides the reasons why the given layer was composited.",
+                    "returns": [
+                        {
+                            "name": "compositingReasons",
+                            "type": "array",
+                            "items": {
+                                "type": "string"
+                            },
+                            "description": "A list of strings specifying reasons for the given layer to become composited."
+                        }
+                    ]
+                },
+                {
+                    "name": "makeSnapshot",
+                    "parameters": [
+                        {
+                            "name": "layerId",
+                            "$ref": "LayerId",
+                            "description": "The id of the layer."
+                        }
+                    ],
+                    "description": "Returns the layer snapshot identifier.",
+                    "returns": [
+                        {
+                            "name": "snapshotId",
+                            "$ref": "SnapshotId",
+                            "description": "The id of the layer snapshot."
+                        }
+                    ]
+                },
+                {
+                    "name": "loadSnapshot",
+                    "parameters": [
+                        {
+                            "name": "tiles",
+                            "type": "array",
+                            "items": {
+                                "$ref": "PictureTile"
+                            },
+                            "minItems": 1,
+                            "description": "An array of tiles composing the snapshot."
+                        }
+                    ],
+                    "description": "Returns the snapshot identifier.",
+                    "returns": [
+                        {
+                            "name": "snapshotId",
+                            "$ref": "SnapshotId",
+                            "description": "The id of the snapshot."
+                        }
+                    ]
+                },
+                {
+                    "name": "releaseSnapshot",
+                    "parameters": [
+                        {
+                            "name": "snapshotId",
+                            "$ref": "SnapshotId",
+                            "description": "The id of the layer snapshot."
+                        }
+                    ],
+                    "description": "Releases layer snapshot captured by the back-end."
+                },
+                {
+                    "name": "profileSnapshot",
+                    "parameters": [
+                        {
+                            "name": "snapshotId",
+                            "$ref": "SnapshotId",
+                            "description": "The id of the layer snapshot."
+                        },
+                        {
+                            "name": "minRepeatCount",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "The maximum number of times to replay the snapshot (1, if not specified)."
+                        },
+                        {
+                            "name": "minDuration",
+                            "type": "number",
+                            "optional": true,
+                            "description": "The minimum duration (in seconds) to replay the snapshot."
+                        },
+                        {
+                            "name": "clipRect",
+                            "$ref": "DOM.Rect",
+                            "optional": true,
+                            "description": "The clip rectangle to apply when replaying the snapshot."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "timings",
+                            "type": "array",
+                            "items": {
+                                "$ref": "PaintProfile"
+                            },
+                            "description": "The array of paint profiles, one per run."
+                        }
+                    ]
+                },
+                {
+                    "name": "replaySnapshot",
+                    "parameters": [
+                        {
+                            "name": "snapshotId",
+                            "$ref": "SnapshotId",
+                            "description": "The id of the layer snapshot."
+                        },
+                        {
+                            "name": "fromStep",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "The first step to replay from (replay from the very start if not specified)."
+                        },
+                        {
+                            "name": "toStep",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "The last step to replay to (replay till the end if not specified)."
+                        },
+                        {
+                            "name": "scale",
+                            "type": "number",
+                            "optional": true,
+                            "description": "The scale to apply while replaying (defaults to 1)."
+                        }
+                    ],
+                    "description": "Replays the layer snapshot and returns the resulting bitmap.",
+                    "returns": [
+                        {
+                            "name": "dataURL",
+                            "type": "string",
+                            "description": "A data: URL for resulting image."
+                        }
+                    ]
+                },
+                {
+                    "name": "snapshotCommandLog",
+                    "parameters": [
+                        {
+                            "name": "snapshotId",
+                            "$ref": "SnapshotId",
+                            "description": "The id of the layer snapshot."
+                        }
+                    ],
+                    "description": "Replays the layer snapshot and returns canvas log.",
+                    "returns": [
+                        {
+                            "name": "commandLog",
+                            "type": "array",
+                            "items": {
+                                "type": "object"
+                            },
+                            "description": "The array of canvas function calls."
+                        }
+                    ]
+                }
+            ],
+            "events": [
+                {
+                    "name": "layerTreeDidChange",
+                    "parameters": [
+                        {
+                            "name": "layers",
+                            "type": "array",
+                            "items": {
+                                "$ref": "Layer"
+                            },
+                            "optional": true,
+                            "description": "Layer tree, absent if not in the comspositing mode."
+                        }
+                    ]
+                },
+                {
+                    "name": "layerPainted",
+                    "parameters": [
+                        {
+                            "name": "layerId",
+                            "$ref": "LayerId",
+                            "description": "The id of the painted layer."
+                        },
+                        {
+                            "name": "clip",
+                            "$ref": "DOM.Rect",
+                            "description": "Clip rectangle."
+                        }
+                    ]
+                }
+            ]
+        },
+        {
+            "domain": "DeviceOrientation",
+            "experimental": true,
+            "commands": [
+                {
+                    "name": "setDeviceOrientationOverride",
+                    "description": "Overrides the Device Orientation.",
+                    "parameters": [
+                        {
+                            "name": "alpha",
+                            "type": "number",
+                            "description": "Mock alpha"
+                        },
+                        {
+                            "name": "beta",
+                            "type": "number",
+                            "description": "Mock beta"
+                        },
+                        {
+                            "name": "gamma",
+                            "type": "number",
+                            "description": "Mock gamma"
+                        }
+                    ]
+                },
+                {
+                    "name": "clearDeviceOrientationOverride",
+                    "description": "Clears the overridden Device Orientation."
+                }
+            ]
+        },
+        {
+            "domain": "Tracing",
+            "dependencies": [
+                "IO"
+            ],
+            "experimental": true,
+            "types": [
+                {
+                    "id": "MemoryDumpConfig",
+                    "type": "object",
+                    "description": "Configuration for memory dump. Used only when \"memory-infra\" category is enabled."
+                },
+                {
+                    "id": "TraceConfig",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "recordMode",
+                            "type": "string",
+                            "optional": true,
+                            "enum": [
+                                "recordUntilFull",
+                                "recordContinuously",
+                                "recordAsMuchAsPossible",
+                                "echoToConsole"
+                            ],
+                            "description": "Controls how the trace buffer stores data."
+                        },
+                        {
+                            "name": "enableSampling",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Turns on JavaScript stack sampling."
+                        },
+                        {
+                            "name": "enableSystrace",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Turns on system tracing."
+                        },
+                        {
+                            "name": "enableArgumentFilter",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Turns on argument filter."
+                        },
+                        {
+                            "name": "includedCategories",
+                            "type": "array",
+                            "items": {
+                                "type": "string"
+                            },
+                            "optional": true,
+                            "description": "Included category filters."
+                        },
+                        {
+                            "name": "excludedCategories",
+                            "type": "array",
+                            "items": {
+                                "type": "string"
+                            },
+                            "optional": true,
+                            "description": "Excluded category filters."
+                        },
+                        {
+                            "name": "syntheticDelays",
+                            "type": "array",
+                            "items": {
+                                "type": "string"
+                            },
+                            "optional": true,
+                            "description": "Configuration to synthesize the delays in tracing."
+                        },
+                        {
+                            "name": "memoryDumpConfig",
+                            "$ref": "MemoryDumpConfig",
+                            "optional": true,
+                            "description": "Configuration for memory dump triggers. Used only when \"memory-infra\" category is enabled."
+                        }
+                    ]
+                }
+            ],
+            "commands": [
+                {
+                    "name": "start",
+                    "description": "Start trace events collection.",
+                    "parameters": [
+                        {
+                            "name": "categories",
+                            "type": "string",
+                            "optional": true,
+                            "deprecated": true,
+                            "description": "Category/tag filter"
+                        },
+                        {
+                            "name": "options",
+                            "type": "string",
+                            "optional": true,
+                            "deprecated": true,
+                            "description": "Tracing options"
+                        },
+                        {
+                            "name": "bufferUsageReportingInterval",
+                            "type": "number",
+                            "optional": true,
+                            "description": "If set, the agent will issue bufferUsage events at this interval, specified in milliseconds"
+                        },
+                        {
+                            "name": "transferMode",
+                            "type": "string",
+                            "enum": [
+                                "ReportEvents",
+                                "ReturnAsStream"
+                            ],
+                            "optional": true,
+                            "description": "Whether to report trace events as series of dataCollected events or to save trace to a stream (defaults to <code>ReportEvents</code>)."
+                        },
+                        {
+                            "name": "traceConfig",
+                            "$ref": "TraceConfig",
+                            "optional": true,
+                            "description": ""
+                        }
+                    ]
+                },
+                {
+                    "name": "end",
+                    "description": "Stop trace events collection."
+                },
+                {
+                    "name": "getCategories",
+                    "description": "Gets supported tracing categories.",
+                    "returns": [
+                        {
+                            "name": "categories",
+                            "type": "array",
+                            "items": {
+                                "type": "string"
+                            },
+                            "description": "A list of supported tracing categories."
+                        }
+                    ]
+                },
+                {
+                    "name": "requestMemoryDump",
+                    "description": "Request a global memory dump.",
+                    "returns": [
+                        {
+                            "name": "dumpGuid",
+                            "type": "string",
+                            "description": "GUID of the resulting global memory dump."
+                        },
+                        {
+                            "name": "success",
+                            "type": "boolean",
+                            "description": "True iff the global memory dump succeeded."
+                        }
+                    ]
+                },
+                {
+                    "name": "recordClockSyncMarker",
+                    "description": "Record a clock sync marker in the trace.",
+                    "parameters": [
+                        {
+                            "name": "syncId",
+                            "type": "string",
+                            "description": "The ID of this clock sync marker"
+                        }
+                    ]
+                }
+            ],
+            "events": [
+                {
+                    "name": "dataCollected",
+                    "parameters": [
+                        {
+                            "name": "value",
+                            "type": "array",
+                            "items": {
+                                "type": "object"
+                            }
+                        }
+                    ],
+                    "description": "Contains an bucket of collected trace events. When tracing is stopped collected events will be send as a sequence of dataCollected events followed by tracingComplete event."
+                },
+                {
+                    "name": "tracingComplete",
+                    "description": "Signals that tracing is stopped and there is no trace buffers pending flush, all data were delivered via dataCollected events.",
+                    "parameters": [
+                        {
+                            "name": "stream",
+                            "$ref": "IO.StreamHandle",
+                            "optional": true,
+                            "description": "A handle of the stream that holds resulting trace data."
+                        }
+                    ]
+                },
+                {
+                    "name": "bufferUsage",
+                    "parameters": [
+                        {
+                            "name": "percentFull",
+                            "type": "number",
+                            "optional": true,
+                            "description": "A number in range [0..1] that indicates the used size of event buffer as a fraction of its total size."
+                        },
+                        {
+                            "name": "eventCount",
+                            "type": "number",
+                            "optional": true,
+                            "description": "An approximate number of events in the trace log."
+                        },
+                        {
+                            "name": "value",
+                            "type": "number",
+                            "optional": true,
+                            "description": "A number in range [0..1] that indicates the used size of event buffer as a fraction of its total size."
+                        }
+                    ]
+                }
+            ]
+        },
+        {
+            "domain": "Animation",
+            "experimental": true,
+            "dependencies": [
+                "Runtime",
+                "DOM"
+            ],
+            "types": [
+                {
+                    "id": "Animation",
+                    "type": "object",
+                    "experimental": true,
+                    "properties": [
+                        {
+                            "name": "id",
+                            "type": "string",
+                            "description": "<code>Animation</code>'s id."
+                        },
+                        {
+                            "name": "name",
+                            "type": "string",
+                            "description": "<code>Animation</code>'s name."
+                        },
+                        {
+                            "name": "pausedState",
+                            "type": "boolean",
+                            "experimental": true,
+                            "description": "<code>Animation</code>'s internal paused state."
+                        },
+                        {
+                            "name": "playState",
+                            "type": "string",
+                            "description": "<code>Animation</code>'s play state."
+                        },
+                        {
+                            "name": "playbackRate",
+                            "type": "number",
+                            "description": "<code>Animation</code>'s playback rate."
+                        },
+                        {
+                            "name": "startTime",
+                            "type": "number",
+                            "description": "<code>Animation</code>'s start time."
+                        },
+                        {
+                            "name": "currentTime",
+                            "type": "number",
+                            "description": "<code>Animation</code>'s current time."
+                        },
+                        {
+                            "name": "source",
+                            "$ref": "AnimationEffect",
+                            "description": "<code>Animation</code>'s source animation node."
+                        },
+                        {
+                            "name": "type",
+                            "type": "string",
+                            "enum": [
+                                "CSSTransition",
+                                "CSSAnimation",
+                                "WebAnimation"
+                            ],
+                            "description": "Animation type of <code>Animation</code>."
+                        },
+                        {
+                            "name": "cssId",
+                            "type": "string",
+                            "optional": true,
+                            "description": "A unique ID for <code>Animation</code> representing the sources that triggered this CSS animation/transition."
+                        }
+                    ],
+                    "description": "Animation instance."
+                },
+                {
+                    "id": "AnimationEffect",
+                    "type": "object",
+                    "experimental": true,
+                    "properties": [
+                        {
+                            "name": "delay",
+                            "type": "number",
+                            "description": "<code>AnimationEffect</code>'s delay."
+                        },
+                        {
+                            "name": "endDelay",
+                            "type": "number",
+                            "description": "<code>AnimationEffect</code>'s end delay."
+                        },
+                        {
+                            "name": "iterationStart",
+                            "type": "number",
+                            "description": "<code>AnimationEffect</code>'s iteration start."
+                        },
+                        {
+                            "name": "iterations",
+                            "type": "number",
+                            "description": "<code>AnimationEffect</code>'s iterations."
+                        },
+                        {
+                            "name": "duration",
+                            "type": "number",
+                            "description": "<code>AnimationEffect</code>'s iteration duration."
+                        },
+                        {
+                            "name": "direction",
+                            "type": "string",
+                            "description": "<code>AnimationEffect</code>'s playback direction."
+                        },
+                        {
+                            "name": "fill",
+                            "type": "string",
+                            "description": "<code>AnimationEffect</code>'s fill mode."
+                        },
+                        {
+                            "name": "backendNodeId",
+                            "$ref": "DOM.BackendNodeId",
+                            "description": "<code>AnimationEffect</code>'s target node."
+                        },
+                        {
+                            "name": "keyframesRule",
+                            "$ref": "KeyframesRule",
+                            "optional": true,
+                            "description": "<code>AnimationEffect</code>'s keyframes."
+                        },
+                        {
+                            "name": "easing",
+                            "type": "string",
+                            "description": "<code>AnimationEffect</code>'s timing function."
+                        }
+                    ],
+                    "description": "AnimationEffect instance"
+                },
+                {
+                    "id": "KeyframesRule",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "name",
+                            "type": "string",
+                            "optional": true,
+                            "description": "CSS keyframed animation's name."
+                        },
+                        {
+                            "name": "keyframes",
+                            "type": "array",
+                            "items": {
+                                "$ref": "KeyframeStyle"
+                            },
+                            "description": "List of animation keyframes."
+                        }
+                    ],
+                    "description": "Keyframes Rule"
+                },
+                {
+                    "id": "KeyframeStyle",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "offset",
+                            "type": "string",
+                            "description": "Keyframe's time offset."
+                        },
+                        {
+                            "name": "easing",
+                            "type": "string",
+                            "description": "<code>AnimationEffect</code>'s timing function."
+                        }
+                    ],
+                    "description": "Keyframe Style"
+                }
+            ],
+            "commands": [
+                {
+                    "name": "enable",
+                    "description": "Enables animation domain notifications."
+                },
+                {
+                    "name": "disable",
+                    "description": "Disables animation domain notifications."
+                },
+                {
+                    "name": "getPlaybackRate",
+                    "returns": [
+                        {
+                            "name": "playbackRate",
+                            "type": "number",
+                            "description": "Playback rate for animations on page."
+                        }
+                    ],
+                    "description": "Gets the playback rate of the document timeline."
+                },
+                {
+                    "name": "setPlaybackRate",
+                    "parameters": [
+                        {
+                            "name": "playbackRate",
+                            "type": "number",
+                            "description": "Playback rate for animations on page"
+                        }
+                    ],
+                    "description": "Sets the playback rate of the document timeline."
+                },
+                {
+                    "name": "getCurrentTime",
+                    "parameters": [
+                        {
+                            "name": "id",
+                            "type": "string",
+                            "description": "Id of animation."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "currentTime",
+                            "type": "number",
+                            "description": "Current time of the page."
+                        }
+                    ],
+                    "description": "Returns the current time of the an animation."
+                },
+                {
+                    "name": "setPaused",
+                    "parameters": [
+                        {
+                            "name": "animations",
+                            "type": "array",
+                            "items": {
+                                "type": "string"
+                            },
+                            "description": "Animations to set the pause state of."
+                        },
+                        {
+                            "name": "paused",
+                            "type": "boolean",
+                            "description": "Paused state to set to."
+                        }
+                    ],
+                    "description": "Sets the paused state of a set of animations."
+                },
+                {
+                    "name": "setTiming",
+                    "parameters": [
+                        {
+                            "name": "animationId",
+                            "type": "string",
+                            "description": "Animation id."
+                        },
+                        {
+                            "name": "duration",
+                            "type": "number",
+                            "description": "Duration of the animation."
+                        },
+                        {
+                            "name": "delay",
+                            "type": "number",
+                            "description": "Delay of the animation."
+                        }
+                    ],
+                    "description": "Sets the timing of an animation node."
+                },
+                {
+                    "name": "seekAnimations",
+                    "parameters": [
+                        {
+                            "name": "animations",
+                            "type": "array",
+                            "items": {
+                                "type": "string"
+                            },
+                            "description": "List of animation ids to seek."
+                        },
+                        {
+                            "name": "currentTime",
+                            "type": "number",
+                            "description": "Set the current time of each animation."
+                        }
+                    ],
+                    "description": "Seek a set of animations to a particular time within each animation."
+                },
+                {
+                    "name": "releaseAnimations",
+                    "parameters": [
+                        {
+                            "name": "animations",
+                            "type": "array",
+                            "items": {
+                                "type": "string"
+                            },
+                            "description": "List of animation ids to seek."
+                        }
+                    ],
+                    "description": "Releases a set of animations to no longer be manipulated."
+                },
+                {
+                    "name": "resolveAnimation",
+                    "parameters": [
+                        {
+                            "name": "animationId",
+                            "type": "string",
+                            "description": "Animation id."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "remoteObject",
+                            "$ref": "Runtime.RemoteObject",
+                            "description": "Corresponding remote object."
+                        }
+                    ],
+                    "description": "Gets the remote object of the Animation."
+                }
+            ],
+            "events": [
+                {
+                    "name": "animationCreated",
+                    "parameters": [
+                        {
+                            "name": "id",
+                            "type": "string",
+                            "description": "Id of the animation that was created."
+                        }
+                    ],
+                    "description": "Event for each animation that has been created."
+                },
+                {
+                    "name": "animationStarted",
+                    "parameters": [
+                        {
+                            "name": "animation",
+                            "$ref": "Animation",
+                            "description": "Animation that was started."
+                        }
+                    ],
+                    "description": "Event for animation that has been started."
+                },
+                {
+                    "name": "animationCanceled",
+                    "parameters": [
+                        {
+                            "name": "id",
+                            "type": "string",
+                            "description": "Id of the animation that was cancelled."
+                        }
+                    ],
+                    "description": "Event for when an animation has been cancelled."
+                }
+            ]
+        },
+        {
+            "domain": "Accessibility",
+            "experimental": true,
+            "dependencies": [
+                "DOM"
+            ],
+            "types": [
+                {
+                    "id": "AXNodeId",
+                    "type": "string",
+                    "description": "Unique accessibility node identifier."
+                },
+                {
+                    "id": "AXValueType",
+                    "type": "string",
+                    "enum": [
+                        "boolean",
+                        "tristate",
+                        "booleanOrUndefined",
+                        "idref",
+                        "idrefList",
+                        "integer",
+                        "node",
+                        "nodeList",
+                        "number",
+                        "string",
+                        "computedString",
+                        "token",
+                        "tokenList",
+                        "domRelation",
+                        "role",
+                        "internalRole",
+                        "valueUndefined"
+                    ],
+                    "description": "Enum of possible property types."
+                },
+                {
+                    "id": "AXValueSourceType",
+                    "type": "string",
+                    "enum": [
+                        "attribute",
+                        "implicit",
+                        "style",
+                        "contents",
+                        "placeholder",
+                        "relatedElement"
+                    ],
+                    "description": "Enum of possible property sources."
+                },
+                {
+                    "id": "AXValueNativeSourceType",
+                    "type": "string",
+                    "enum": [
+                        "figcaption",
+                        "label",
+                        "labelfor",
+                        "labelwrapped",
+                        "legend",
+                        "tablecaption",
+                        "title",
+                        "other"
+                    ],
+                    "description": "Enum of possible native property sources (as a subtype of a particular AXValueSourceType)."
+                },
+                {
+                    "id": "AXValueSource",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "type",
+                            "$ref": "AXValueSourceType",
+                            "description": "What type of source this is."
+                        },
+                        {
+                            "name": "value",
+                            "$ref": "AXValue",
+                            "description": "The value of this property source.",
+                            "optional": true
+                        },
+                        {
+                            "name": "attribute",
+                            "type": "string",
+                            "description": "The name of the relevant attribute, if any.",
+                            "optional": true
+                        },
+                        {
+                            "name": "attributeValue",
+                            "$ref": "AXValue",
+                            "description": "The value of the relevant attribute, if any.",
+                            "optional": true
+                        },
+                        {
+                            "name": "superseded",
+                            "type": "boolean",
+                            "description": "Whether this source is superseded by a higher priority source.",
+                            "optional": true
+                        },
+                        {
+                            "name": "nativeSource",
+                            "$ref": "AXValueNativeSourceType",
+                            "description": "The native markup source for this value, e.g. a <label> element.",
+                            "optional": true
+                        },
+                        {
+                            "name": "nativeSourceValue",
+                            "$ref": "AXValue",
+                            "description": "The value, such as a node or node list, of the native source.",
+                            "optional": true
+                        },
+                        {
+                            "name": "invalid",
+                            "type": "boolean",
+                            "description": "Whether the value for this property is invalid.",
+                            "optional": true
+                        },
+                        {
+                            "name": "invalidReason",
+                            "type": "string",
+                            "description": "Reason for the value being invalid, if it is.",
+                            "optional": true
+                        }
+                    ],
+                    "description": "A single source for a computed AX property."
+                },
+                {
+                    "id": "AXRelatedNode",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "backendDOMNodeId",
+                            "$ref": "DOM.BackendNodeId",
+                            "description": "The BackendNodeId of the related DOM node."
+                        },
+                        {
+                            "name": "idref",
+                            "type": "string",
+                            "description": "The IDRef value provided, if any.",
+                            "optional": true
+                        },
+                        {
+                            "name": "text",
+                            "type": "string",
+                            "description": "The text alternative of this node in the current context.",
+                            "optional": true
+                        }
+                    ]
+                },
+                {
+                    "id": "AXProperty",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "name",
+                            "type": "string",
+                            "description": "The name of this property."
+                        },
+                        {
+                            "name": "value",
+                            "$ref": "AXValue",
+                            "description": "The value of this property."
+                        }
+                    ]
+                },
+                {
+                    "id": "AXValue",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "type",
+                            "$ref": "AXValueType",
+                            "description": "The type of this value."
+                        },
+                        {
+                            "name": "value",
+                            "type": "any",
+                            "description": "The computed value of this property.",
+                            "optional": true
+                        },
+                        {
+                            "name": "relatedNodes",
+                            "type": "array",
+                            "items": {
+                                "$ref": "AXRelatedNode"
+                            },
+                            "description": "One or more related nodes, if applicable.",
+                            "optional": true
+                        },
+                        {
+                            "name": "sources",
+                            "type": "array",
+                            "items": {
+                                "$ref": "AXValueSource"
+                            },
+                            "description": "The sources which contributed to the computation of this property.",
+                            "optional": true
+                        }
+                    ],
+                    "description": "A single computed AX property."
+                },
+                {
+                    "id": "AXGlobalStates",
+                    "type": "string",
+                    "enum": [
+                        "disabled",
+                        "hidden",
+                        "hiddenRoot",
+                        "invalid",
+                        "keyshortcuts",
+                        "roledescription"
+                    ],
+                    "description": "States which apply to every AX node."
+                },
+                {
+                    "id": "AXLiveRegionAttributes",
+                    "type": "string",
+                    "enum": [
+                        "live",
+                        "atomic",
+                        "relevant",
+                        "busy",
+                        "root"
+                    ],
+                    "description": "Attributes which apply to nodes in live regions."
+                },
+                {
+                    "id": "AXWidgetAttributes",
+                    "type": "string",
+                    "enum": [
+                        "autocomplete",
+                        "haspopup",
+                        "level",
+                        "multiselectable",
+                        "orientation",
+                        "multiline",
+                        "readonly",
+                        "required",
+                        "valuemin",
+                        "valuemax",
+                        "valuetext"
+                    ],
+                    "description": "Attributes which apply to widgets."
+                },
+                {
+                    "id": "AXWidgetStates",
+                    "type": "string",
+                    "enum": [
+                        "checked",
+                        "expanded",
+                        "modal",
+                        "pressed",
+                        "selected"
+                    ],
+                    "description": "States which apply to widgets."
+                },
+                {
+                    "id": "AXRelationshipAttributes",
+                    "type": "string",
+                    "enum": [
+                        "activedescendant",
+                        "controls",
+                        "describedby",
+                        "details",
+                        "errormessage",
+                        "flowto",
+                        "labelledby",
+                        "owns"
+                    ],
+                    "description": "Relationships between elements other than parent/child/sibling."
+                },
+                {
+                    "id": "AXNode",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "AXNodeId",
+                            "description": "Unique identifier for this node."
+                        },
+                        {
+                            "name": "ignored",
+                            "type": "boolean",
+                            "description": "Whether this node is ignored for accessibility"
+                        },
+                        {
+                            "name": "ignoredReasons",
+                            "type": "array",
+                            "items": {
+                                "$ref": "AXProperty"
+                            },
+                            "description": "Collection of reasons why this node is hidden.",
+                            "optional": true
+                        },
+                        {
+                            "name": "role",
+                            "$ref": "AXValue",
+                            "description": "This <code>Node</code>'s role, whether explicit or implicit.",
+                            "optional": true
+                        },
+                        {
+                            "name": "name",
+                            "$ref": "AXValue",
+                            "description": "The accessible name for this <code>Node</code>.",
+                            "optional": true
+                        },
+                        {
+                            "name": "description",
+                            "$ref": "AXValue",
+                            "description": "The accessible description for this <code>Node</code>.",
+                            "optional": true
+                        },
+                        {
+                            "name": "value",
+                            "$ref": "AXValue",
+                            "description": "The value for this <code>Node</code>.",
+                            "optional": true
+                        },
+                        {
+                            "name": "properties",
+                            "type": "array",
+                            "items": {
+                                "$ref": "AXProperty"
+                            },
+                            "description": "All other properties",
+                            "optional": true
+                        },
+                        {
+                            "name": "childIds",
+                            "type": "array",
+                            "items": {
+                                "$ref": "AXNodeId"
+                            },
+                            "description": "IDs for each of this node's child nodes.",
+                            "optional": true
+                        },
+                        {
+                            "name": "backendDOMNodeId",
+                            "$ref": "DOM.BackendNodeId",
+                            "description": "The backend ID for the associated DOM node, if any.",
+                            "optional": true
+                        }
+                    ],
+                    "description": "A node in the accessibility tree."
+                }
+            ],
+            "commands": [
+                {
+                    "name": "getPartialAXTree",
+                    "parameters": [
+                        {
+                            "name": "nodeId",
+                            "$ref": "DOM.NodeId",
+                            "description": "ID of node to get the partial accessibility tree for."
+                        },
+                        {
+                            "name": "fetchRelatives",
+                            "type": "boolean",
+                            "description": "Whether to fetch this nodes ancestors, siblings and children. Defaults to true.",
+                            "optional": true
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "nodes",
+                            "type": "array",
+                            "items": {
+                                "$ref": "AXNode"
+                            },
+                            "description": "The <code>Accessibility.AXNode</code> for this DOM node, if it exists, plus its ancestors, siblings and children, if requested."
+                        }
+                    ],
+                    "description": "Fetches the accessibility node and partial accessibility tree for this DOM node, if it exists.",
+                    "experimental": true
+                }
+            ]
+        },
+        {
+            "domain": "Storage",
+            "experimental": true,
+            "types": [
+                {
+                    "id": "StorageType",
+                    "type": "string",
+                    "enum": [
+                        "appcache",
+                        "cookies",
+                        "file_systems",
+                        "indexeddb",
+                        "local_storage",
+                        "shader_cache",
+                        "websql",
+                        "service_workers",
+                        "cache_storage",
+                        "all"
+                    ],
+                    "description": "Enum of possible storage types."
+                }
+            ],
+            "commands": [
+                {
+                    "name": "clearDataForOrigin",
+                    "parameters": [
+                        {
+                            "name": "origin",
+                            "type": "string",
+                            "description": "Security origin."
+                        },
+                        {
+                            "name": "storageTypes",
+                            "type": "string",
+                            "description": "Comma separated origin names."
+                        }
+                    ],
+                    "description": "Clears storage for origin."
+                }
+            ]
+        },
+        {
+            "domain": "Log",
+            "description": "Provides access to log entries.",
+            "dependencies": [
+                "Runtime",
+                "Network"
+            ],
+            "experimental": true,
+            "types": [
+                {
+                    "id": "LogEntry",
+                    "type": "object",
+                    "description": "Log entry.",
+                    "properties": [
+                        {
+                            "name": "source",
+                            "type": "string",
+                            "enum": [
+                                "xml",
+                                "javascript",
+                                "network",
+                                "storage",
+                                "appcache",
+                                "rendering",
+                                "security",
+                                "deprecation",
+                                "worker",
+                                "violation",
+                                "intervention",
+                                "other"
+                            ],
+                            "description": "Log entry source."
+                        },
+                        {
+                            "name": "level",
+                            "type": "string",
+                            "enum": [
+                                "verbose",
+                                "info",
+                                "warning",
+                                "error"
+                            ],
+                            "description": "Log entry severity."
+                        },
+                        {
+                            "name": "text",
+                            "type": "string",
+                            "description": "Logged text."
+                        },
+                        {
+                            "name": "timestamp",
+                            "$ref": "Runtime.Timestamp",
+                            "description": "Timestamp when this entry was added."
+                        },
+                        {
+                            "name": "url",
+                            "type": "string",
+                            "optional": true,
+                            "description": "URL of the resource if known."
+                        },
+                        {
+                            "name": "lineNumber",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "Line number in the resource."
+                        },
+                        {
+                            "name": "stackTrace",
+                            "$ref": "Runtime.StackTrace",
+                            "optional": true,
+                            "description": "JavaScript stack trace."
+                        },
+                        {
+                            "name": "networkRequestId",
+                            "$ref": "Network.RequestId",
+                            "optional": true,
+                            "description": "Identifier of the network request associated with this entry."
+                        },
+                        {
+                            "name": "workerId",
+                            "type": "string",
+                            "optional": true,
+                            "description": "Identifier of the worker associated with this entry."
+                        }
+                    ]
+                },
+                {
+                    "id": "ViolationSetting",
+                    "type": "object",
+                    "description": "Violation configuration setting.",
+                    "properties": [
+                        {
+                            "name": "name",
+                            "type": "string",
+                            "enum": [
+                                "longTask",
+                                "longLayout",
+                                "blockedEvent",
+                                "blockedParser",
+                                "discouragedAPIUse",
+                                "handler",
+                                "recurringHandler"
+                            ],
+                            "description": "Violation type."
+                        },
+                        {
+                            "name": "threshold",
+                            "type": "number",
+                            "description": "Time threshold to trigger upon."
+                        }
+                    ]
+                }
+            ],
+            "commands": [
+                {
+                    "name": "enable",
+                    "description": "Enables log domain, sends the entries collected so far to the client by means of the <code>entryAdded</code> notification."
+                },
+                {
+                    "name": "disable",
+                    "description": "Disables log domain, prevents further log entries from being reported to the client."
+                },
+                {
+                    "name": "clear",
+                    "description": "Clears the log."
+                },
+                {
+                    "name": "startViolationsReport",
+                    "parameters": [
+                        {
+                            "name": "config",
+                            "type": "array",
+                            "items": {
+                                "$ref": "ViolationSetting"
+                            },
+                            "description": "Configuration for violations."
+                        }
+                    ],
+                    "description": "start violation reporting."
+                },
+                {
+                    "name": "stopViolationsReport",
+                    "description": "Stop violation reporting."
+                }
+            ],
+            "events": [
+                {
+                    "name": "entryAdded",
+                    "parameters": [
+                        {
+                            "name": "entry",
+                            "$ref": "LogEntry",
+                            "description": "The entry."
+                        }
+                    ],
+                    "description": "Issued when new message was logged."
+                }
+            ]
+        },
+        {
+            "domain": "SystemInfo",
+            "description": "The SystemInfo domain defines methods and events for querying low-level system information.",
+            "experimental": true,
+            "types": [
+                {
+                    "id": "GPUDevice",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "vendorId",
+                            "type": "number",
+                            "description": "PCI ID of the GPU vendor, if available; 0 otherwise."
+                        },
+                        {
+                            "name": "deviceId",
+                            "type": "number",
+                            "description": "PCI ID of the GPU device, if available; 0 otherwise."
+                        },
+                        {
+                            "name": "vendorString",
+                            "type": "string",
+                            "description": "String description of the GPU vendor, if the PCI ID is not available."
+                        },
+                        {
+                            "name": "deviceString",
+                            "type": "string",
+                            "description": "String description of the GPU device, if the PCI ID is not available."
+                        }
+                    ],
+                    "description": "Describes a single graphics processor (GPU)."
+                },
+                {
+                    "id": "GPUInfo",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "devices",
+                            "type": "array",
+                            "items": {
+                                "$ref": "GPUDevice"
+                            },
+                            "description": "The graphics devices on the system. Element 0 is the primary GPU."
+                        },
+                        {
+                            "name": "auxAttributes",
+                            "type": "object",
+                            "optional": true,
+                            "description": "An optional dictionary of additional GPU related attributes."
+                        },
+                        {
+                            "name": "featureStatus",
+                            "type": "object",
+                            "optional": true,
+                            "description": "An optional dictionary of graphics features and their status."
+                        },
+                        {
+                            "name": "driverBugWorkarounds",
+                            "type": "array",
+                            "items": {
+                                "type": "string"
+                            },
+                            "description": "An optional array of GPU driver bug workarounds."
+                        }
+                    ],
+                    "description": "Provides information about the GPU(s) on the system."
+                }
+            ],
+            "commands": [
+                {
+                    "name": "getInfo",
+                    "description": "Returns information about the system.",
+                    "returns": [
+                        {
+                            "name": "gpu",
+                            "$ref": "GPUInfo",
+                            "description": "Information about the GPUs on the system."
+                        },
+                        {
+                            "name": "modelName",
+                            "type": "string",
+                            "description": "A platform-dependent description of the model of the machine. On Mac OS, this is, for example, 'MacBookPro'. Will be the empty string if not supported."
+                        },
+                        {
+                            "name": "modelVersion",
+                            "type": "string",
+                            "description": "A platform-dependent description of the version of the machine. On Mac OS, this is, for example, '10.1'. Will be the empty string if not supported."
+                        },
+                        {
+                            "name": "commandLine",
+                            "type": "string",
+                            "description": "The command line string used to launch the browser. Will be the empty string if not supported."
+                        }
+                    ]
+                }
+            ]
+        },
+        {
+            "domain": "Tethering",
+            "description": "The Tethering domain defines methods and events for browser port binding.",
+            "experimental": true,
+            "commands": [
+                {
+                    "name": "bind",
+                    "description": "Request browser port binding.",
+                    "parameters": [
+                        {
+                            "name": "port",
+                            "type": "integer",
+                            "description": "Port number to bind."
+                        }
+                    ]
+                },
+                {
+                    "name": "unbind",
+                    "description": "Request browser port unbinding.",
+                    "parameters": [
+                        {
+                            "name": "port",
+                            "type": "integer",
+                            "description": "Port number to unbind."
+                        }
+                    ]
+                }
+            ],
+            "events": [
+                {
+                    "name": "accepted",
+                    "description": "Informs that port was successfully bound and got a specified connection id.",
+                    "parameters": [
+                        {
+                            "name": "port",
+                            "type": "integer",
+                            "description": "Port number that was successfully bound."
+                        },
+                        {
+                            "name": "connectionId",
+                            "type": "string",
+                            "description": "Connection id to be used."
+                        }
+                    ]
+                }
+            ]
+        },
+        {
+            "domain": "Browser",
+            "description": "The Browser domain defines methods and events for browser managing.",
+            "experimental": true,
+            "types": [
+                {
+                    "id": "WindowID",
+                    "type": "integer"
+                },
+                {
+                    "id": "WindowState",
+                    "type": "string",
+                    "enum": [
+                        "normal",
+                        "minimized",
+                        "maximized",
+                        "fullscreen"
+                    ],
+                    "description": "The state of the browser window."
+                },
+                {
+                    "id": "Bounds",
+                    "type": "object",
+                    "description": "Browser window bounds information",
+                    "properties": [
+                        {
+                            "name": "left",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "The offset from the left edge of the screen to the window in pixels."
+                        },
+                        {
+                            "name": "top",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "The offset from the top edge of the screen to the window in pixels."
+                        },
+                        {
+                            "name": "width",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "The window width in pixels."
+                        },
+                        {
+                            "name": "height",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "The window height in pixels."
+                        },
+                        {
+                            "name": "windowState",
+                            "$ref": "WindowState",
+                            "optional": true,
+                            "description": "The window state. Default to normal."
+                        }
+                    ]
+                }
+            ],
+            "commands": [
+                {
+                    "name": "getWindowForTarget",
+                    "description": "Get the browser window that contains the devtools target.",
+                    "parameters": [
+                        {
+                            "name": "targetId",
+                            "$ref": "Target.TargetID",
+                            "description": "Devtools agent host id."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "windowId",
+                            "$ref": "WindowID",
+                            "description": "Browser window id."
+                        },
+                        {
+                            "name": "bounds",
+                            "$ref": "Bounds",
+                            "description": "Bounds information of the window. When window state is 'minimized', the restored window position and size are returned."
+                        }
+                    ]
+                },
+                {
+                    "name": "setWindowBounds",
+                    "description": "Set position and/or size of the browser window.",
+                    "parameters": [
+                        {
+                            "name": "windowId",
+                            "$ref": "WindowID",
+                            "description": "Browser window id."
+                        },
+                        {
+                            "name": "bounds",
+                            "$ref": "Bounds",
+                            "description": "New window bounds. The 'minimized', 'maximized' and 'fullscreen' states cannot be combined with 'left', 'top', 'width' or 'height'. Leaves unspecified fields unchanged."
+                        }
+                    ]
+                },
+                {
+                    "name": "getWindowBounds",
+                    "description": "Get position and size of the browser window.",
+                    "parameters": [
+                        {
+                            "name": "windowId",
+                            "$ref": "WindowID",
+                            "description": "Browser window id."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "bounds",
+                            "$ref": "Bounds",
+                            "description": "Bounds information of the window. When window state is 'minimized', the restored window position and size are returned."
+                        }
+                    ]
+                }
+            ]
+        },
+        {
+            "domain": "Schema",
+            "description": "Provides information about the protocol schema.",
+            "types": [
+                {
+                    "id": "Domain",
+                    "type": "object",
+                    "description": "Description of the protocol domain.",
+                    "properties": [
+                        {
+                            "name": "name",
+                            "type": "string",
+                            "description": "Domain name."
+                        },
+                        {
+                            "name": "version",
+                            "type": "string",
+                            "description": "Domain version."
+                        }
+                    ]
+                }
+            ],
+            "commands": [
+                {
+                    "name": "getDomains",
+                    "description": "Returns supported domains.",
+                    "handlers": [
+                        "browser",
+                        "renderer"
+                    ],
+                    "returns": [
+                        {
+                            "name": "domains",
+                            "type": "array",
+                            "items": {
+                                "$ref": "Domain"
+                            },
+                            "description": "List of supported domains."
+                        }
+                    ]
+                }
+            ]
+        },
+        {
+            "domain": "Runtime",
+            "description": "Runtime domain exposes JavaScript runtime by means of remote evaluation and mirror objects. Evaluation results are returned as mirror object that expose object type, string representation and unique identifier that can be used for further object reference. Original objects are maintained in memory unless they are either explicitly released or are released along with the other objects in their object group.",
+            "types": [
+                {
+                    "id": "ScriptId",
+                    "type": "string",
+                    "description": "Unique script identifier."
+                },
+                {
+                    "id": "RemoteObjectId",
+                    "type": "string",
+                    "description": "Unique object identifier."
+                },
+                {
+                    "id": "UnserializableValue",
+                    "type": "string",
+                    "enum": [
+                        "Infinity",
+                        "NaN",
+                        "-Infinity",
+                        "-0"
+                    ],
+                    "description": "Primitive value which cannot be JSON-stringified."
+                },
+                {
+                    "id": "RemoteObject",
+                    "type": "object",
+                    "description": "Mirror object referencing original JavaScript object.",
+                    "properties": [
+                        {
+                            "name": "type",
+                            "type": "string",
+                            "enum": [
+                                "object",
+                                "function",
+                                "undefined",
+                                "string",
+                                "number",
+                                "boolean",
+                                "symbol"
+                            ],
+                            "description": "Object type."
+                        },
+                        {
+                            "name": "subtype",
+                            "type": "string",
+                            "optional": true,
+                            "enum": [
+                                "array",
+                                "null",
+                                "node",
+                                "regexp",
+                                "date",
+                                "map",
+                                "set",
+                                "weakmap",
+                                "weakset",
+                                "iterator",
+                                "generator",
+                                "error",
+                                "proxy",
+                                "promise",
+                                "typedarray"
+                            ],
+                            "description": "Object subtype hint. Specified for <code>object</code> type values only."
+                        },
+                        {
+                            "name": "className",
+                            "type": "string",
+                            "optional": true,
+                            "description": "Object class (constructor) name. Specified for <code>object</code> type values only."
+                        },
+                        {
+                            "name": "value",
+                            "type": "any",
+                            "optional": true,
+                            "description": "Remote object value in case of primitive values or JSON values (if it was requested)."
+                        },
+                        {
+                            "name": "unserializableValue",
+                            "$ref": "UnserializableValue",
+                            "optional": true,
+                            "description": "Primitive value which can not be JSON-stringified does not have <code>value</code>, but gets this property."
+                        },
+                        {
+                            "name": "description",
+                            "type": "string",
+                            "optional": true,
+                            "description": "String representation of the object."
+                        },
+                        {
+                            "name": "objectId",
+                            "$ref": "RemoteObjectId",
+                            "optional": true,
+                            "description": "Unique object identifier (for non-primitive values)."
+                        },
+                        {
+                            "name": "preview",
+                            "$ref": "ObjectPreview",
+                            "optional": true,
+                            "description": "Preview containing abbreviated property values. Specified for <code>object</code> type values only.",
+                            "experimental": true
+                        },
+                        {
+                            "name": "customPreview",
+                            "$ref": "CustomPreview",
+                            "optional": true,
+                            "experimental": true
+                        }
+                    ]
+                },
+                {
+                    "id": "CustomPreview",
+                    "type": "object",
+                    "experimental": true,
+                    "properties": [
+                        {
+                            "name": "header",
+                            "type": "string"
+                        },
+                        {
+                            "name": "hasBody",
+                            "type": "boolean"
+                        },
+                        {
+                            "name": "formatterObjectId",
+                            "$ref": "RemoteObjectId"
+                        },
+                        {
+                            "name": "bindRemoteObjectFunctionId",
+                            "$ref": "RemoteObjectId"
+                        },
+                        {
+                            "name": "configObjectId",
+                            "$ref": "RemoteObjectId",
+                            "optional": true
+                        }
+                    ]
+                },
+                {
+                    "id": "ObjectPreview",
+                    "type": "object",
+                    "experimental": true,
+                    "description": "Object containing abbreviated remote object value.",
+                    "properties": [
+                        {
+                            "name": "type",
+                            "type": "string",
+                            "enum": [
+                                "object",
+                                "function",
+                                "undefined",
+                                "string",
+                                "number",
+                                "boolean",
+                                "symbol"
+                            ],
+                            "description": "Object type."
+                        },
+                        {
+                            "name": "subtype",
+                            "type": "string",
+                            "optional": true,
+                            "enum": [
+                                "array",
+                                "null",
+                                "node",
+                                "regexp",
+                                "date",
+                                "map",
+                                "set",
+                                "weakmap",
+                                "weakset",
+                                "iterator",
+                                "generator",
+                                "error"
+                            ],
+                            "description": "Object subtype hint. Specified for <code>object</code> type values only."
+                        },
+                        {
+                            "name": "description",
+                            "type": "string",
+                            "optional": true,
+                            "description": "String representation of the object."
+                        },
+                        {
+                            "name": "overflow",
+                            "type": "boolean",
+                            "description": "True iff some of the properties or entries of the original object did not fit."
+                        },
+                        {
+                            "name": "properties",
+                            "type": "array",
+                            "items": {
+                                "$ref": "PropertyPreview"
+                            },
+                            "description": "List of the properties."
+                        },
+                        {
+                            "name": "entries",
+                            "type": "array",
+                            "items": {
+                                "$ref": "EntryPreview"
+                            },
+                            "optional": true,
+                            "description": "List of the entries. Specified for <code>map</code> and <code>set</code> subtype values only."
+                        }
+                    ]
+                },
+                {
+                    "id": "PropertyPreview",
+                    "type": "object",
+                    "experimental": true,
+                    "properties": [
+                        {
+                            "name": "name",
+                            "type": "string",
+                            "description": "Property name."
+                        },
+                        {
+                            "name": "type",
+                            "type": "string",
+                            "enum": [
+                                "object",
+                                "function",
+                                "undefined",
+                                "string",
+                                "number",
+                                "boolean",
+                                "symbol",
+                                "accessor"
+                            ],
+                            "description": "Object type. Accessor means that the property itself is an accessor property."
+                        },
+                        {
+                            "name": "value",
+                            "type": "string",
+                            "optional": true,
+                            "description": "User-friendly property value string."
+                        },
+                        {
+                            "name": "valuePreview",
+                            "$ref": "ObjectPreview",
+                            "optional": true,
+                            "description": "Nested value preview."
+                        },
+                        {
+                            "name": "subtype",
+                            "type": "string",
+                            "optional": true,
+                            "enum": [
+                                "array",
+                                "null",
+                                "node",
+                                "regexp",
+                                "date",
+                                "map",
+                                "set",
+                                "weakmap",
+                                "weakset",
+                                "iterator",
+                                "generator",
+                                "error"
+                            ],
+                            "description": "Object subtype hint. Specified for <code>object</code> type values only."
+                        }
+                    ]
+                },
+                {
+                    "id": "EntryPreview",
+                    "type": "object",
+                    "experimental": true,
+                    "properties": [
+                        {
+                            "name": "key",
+                            "$ref": "ObjectPreview",
+                            "optional": true,
+                            "description": "Preview of the key. Specified for map-like collection entries."
+                        },
+                        {
+                            "name": "value",
+                            "$ref": "ObjectPreview",
+                            "description": "Preview of the value."
+                        }
+                    ]
+                },
+                {
+                    "id": "PropertyDescriptor",
+                    "type": "object",
+                    "description": "Object property descriptor.",
+                    "properties": [
+                        {
+                            "name": "name",
+                            "type": "string",
+                            "description": "Property name or symbol description."
+                        },
+                        {
+                            "name": "value",
+                            "$ref": "RemoteObject",
+                            "optional": true,
+                            "description": "The value associated with the property."
+                        },
+                        {
+                            "name": "writable",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "True if the value associated with the property may be changed (data descriptors only)."
+                        },
+                        {
+                            "name": "get",
+                            "$ref": "RemoteObject",
+                            "optional": true,
+                            "description": "A function which serves as a getter for the property, or <code>undefined</code> if there is no getter (accessor descriptors only)."
+                        },
+                        {
+                            "name": "set",
+                            "$ref": "RemoteObject",
+                            "optional": true,
+                            "description": "A function which serves as a setter for the property, or <code>undefined</code> if there is no setter (accessor descriptors only)."
+                        },
+                        {
+                            "name": "configurable",
+                            "type": "boolean",
+                            "description": "True if the type of this property descriptor may be changed and if the property may be deleted from the corresponding object."
+                        },
+                        {
+                            "name": "enumerable",
+                            "type": "boolean",
+                            "description": "True if this property shows up during enumeration of the properties on the corresponding object."
+                        },
+                        {
+                            "name": "wasThrown",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "True if the result was thrown during the evaluation."
+                        },
+                        {
+                            "name": "isOwn",
+                            "optional": true,
+                            "type": "boolean",
+                            "description": "True if the property is owned for the object."
+                        },
+                        {
+                            "name": "symbol",
+                            "$ref": "RemoteObject",
+                            "optional": true,
+                            "description": "Property symbol object, if the property is of the <code>symbol</code> type."
+                        }
+                    ]
+                },
+                {
+                    "id": "InternalPropertyDescriptor",
+                    "type": "object",
+                    "description": "Object internal property descriptor. This property isn't normally visible in JavaScript code.",
+                    "properties": [
+                        {
+                            "name": "name",
+                            "type": "string",
+                            "description": "Conventional property name."
+                        },
+                        {
+                            "name": "value",
+                            "$ref": "RemoteObject",
+                            "optional": true,
+                            "description": "The value associated with the property."
+                        }
+                    ]
+                },
+                {
+                    "id": "CallArgument",
+                    "type": "object",
+                    "description": "Represents function call argument. Either remote object id <code>objectId</code>, primitive <code>value</code>, unserializable primitive value or neither of (for undefined) them should be specified.",
+                    "properties": [
+                        {
+                            "name": "value",
+                            "type": "any",
+                            "optional": true,
+                            "description": "Primitive value."
+                        },
+                        {
+                            "name": "unserializableValue",
+                            "$ref": "UnserializableValue",
+                            "optional": true,
+                            "description": "Primitive value which can not be JSON-stringified."
+                        },
+                        {
+                            "name": "objectId",
+                            "$ref": "RemoteObjectId",
+                            "optional": true,
+                            "description": "Remote object handle."
+                        }
+                    ]
+                },
+                {
+                    "id": "ExecutionContextId",
+                    "type": "integer",
+                    "description": "Id of an execution context."
+                },
+                {
+                    "id": "ExecutionContextDescription",
+                    "type": "object",
+                    "description": "Description of an isolated world.",
+                    "properties": [
+                        {
+                            "name": "id",
+                            "$ref": "ExecutionContextId",
+                            "description": "Unique id of the execution context. It can be used to specify in which execution context script evaluation should be performed."
+                        },
+                        {
+                            "name": "origin",
+                            "type": "string",
+                            "description": "Execution context origin."
+                        },
+                        {
+                            "name": "name",
+                            "type": "string",
+                            "description": "Human readable name describing given context."
+                        },
+                        {
+                            "name": "auxData",
+                            "type": "object",
+                            "optional": true,
+                            "description": "Embedder-specific auxiliary data."
+                        }
+                    ]
+                },
+                {
+                    "id": "ExceptionDetails",
+                    "type": "object",
+                    "description": "Detailed information about exception (or error) that was thrown during script compilation or execution.",
+                    "properties": [
+                        {
+                            "name": "exceptionId",
+                            "type": "integer",
+                            "description": "Exception id."
+                        },
+                        {
+                            "name": "text",
+                            "type": "string",
+                            "description": "Exception text, which should be used together with exception object when available."
+                        },
+                        {
+                            "name": "lineNumber",
+                            "type": "integer",
+                            "description": "Line number of the exception location (0-based)."
+                        },
+                        {
+                            "name": "columnNumber",
+                            "type": "integer",
+                            "description": "Column number of the exception location (0-based)."
+                        },
+                        {
+                            "name": "scriptId",
+                            "$ref": "ScriptId",
+                            "optional": true,
+                            "description": "Script ID of the exception location."
+                        },
+                        {
+                            "name": "url",
+                            "type": "string",
+                            "optional": true,
+                            "description": "URL of the exception location, to be used when the script was not reported."
+                        },
+                        {
+                            "name": "stackTrace",
+                            "$ref": "StackTrace",
+                            "optional": true,
+                            "description": "JavaScript stack trace if available."
+                        },
+                        {
+                            "name": "exception",
+                            "$ref": "RemoteObject",
+                            "optional": true,
+                            "description": "Exception object if available."
+                        },
+                        {
+                            "name": "executionContextId",
+                            "$ref": "ExecutionContextId",
+                            "optional": true,
+                            "description": "Identifier of the context where exception happened."
+                        }
+                    ]
+                },
+                {
+                    "id": "Timestamp",
+                    "type": "number",
+                    "description": "Number of milliseconds since epoch."
+                },
+                {
+                    "id": "CallFrame",
+                    "type": "object",
+                    "description": "Stack entry for runtime errors and assertions.",
+                    "properties": [
+                        {
+                            "name": "functionName",
+                            "type": "string",
+                            "description": "JavaScript function name."
+                        },
+                        {
+                            "name": "scriptId",
+                            "$ref": "ScriptId",
+                            "description": "JavaScript script id."
+                        },
+                        {
+                            "name": "url",
+                            "type": "string",
+                            "description": "JavaScript script name or url."
+                        },
+                        {
+                            "name": "lineNumber",
+                            "type": "integer",
+                            "description": "JavaScript script line number (0-based)."
+                        },
+                        {
+                            "name": "columnNumber",
+                            "type": "integer",
+                            "description": "JavaScript script column number (0-based)."
+                        }
+                    ]
+                },
+                {
+                    "id": "StackTrace",
+                    "type": "object",
+                    "description": "Call frames for assertions or error messages.",
+                    "properties": [
+                        {
+                            "name": "description",
+                            "type": "string",
+                            "optional": true,
+                            "description": "String label of this stack trace. For async traces this may be a name of the function that initiated the async call."
+                        },
+                        {
+                            "name": "callFrames",
+                            "type": "array",
+                            "items": {
+                                "$ref": "CallFrame"
+                            },
+                            "description": "JavaScript function name."
+                        },
+                        {
+                            "name": "parent",
+                            "$ref": "StackTrace",
+                            "optional": true,
+                            "description": "Asynchronous JavaScript stack trace that preceded this stack, if available."
+                        },
+                        {
+                            "name": "promiseCreationFrame",
+                            "$ref": "CallFrame",
+                            "optional": true,
+                            "experimental": true,
+                            "description": "Creation frame of the Promise which produced the next synchronous trace when resolved, if available."
+                        }
+                    ]
+                }
+            ],
+            "commands": [
+                {
+                    "name": "evaluate",
+                    "parameters": [
+                        {
+                            "name": "expression",
+                            "type": "string",
+                            "description": "Expression to evaluate."
+                        },
+                        {
+                            "name": "objectGroup",
+                            "type": "string",
+                            "optional": true,
+                            "description": "Symbolic group name that can be used to release multiple objects."
+                        },
+                        {
+                            "name": "includeCommandLineAPI",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Determines whether Command Line API should be available during the evaluation."
+                        },
+                        {
+                            "name": "silent",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "In silent mode exceptions thrown during evaluation are not reported and do not pause execution. Overrides <code>setPauseOnException</code> state."
+                        },
+                        {
+                            "name": "contextId",
+                            "$ref": "ExecutionContextId",
+                            "optional": true,
+                            "description": "Specifies in which execution context to perform evaluation. If the parameter is omitted the evaluation will be performed in the context of the inspected page."
+                        },
+                        {
+                            "name": "returnByValue",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Whether the result is expected to be a JSON object that should be sent by value."
+                        },
+                        {
+                            "name": "generatePreview",
+                            "type": "boolean",
+                            "optional": true,
+                            "experimental": true,
+                            "description": "Whether preview should be generated for the result."
+                        },
+                        {
+                            "name": "userGesture",
+                            "type": "boolean",
+                            "optional": true,
+                            "experimental": true,
+                            "description": "Whether execution should be treated as initiated by user in the UI."
+                        },
+                        {
+                            "name": "awaitPromise",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Whether execution should wait for promise to be resolved. If the result of evaluation is not a Promise, it's considered to be an error."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "result",
+                            "$ref": "RemoteObject",
+                            "description": "Evaluation result."
+                        },
+                        {
+                            "name": "exceptionDetails",
+                            "$ref": "ExceptionDetails",
+                            "optional": true,
+                            "description": "Exception details."
+                        }
+                    ],
+                    "description": "Evaluates expression on global object."
+                },
+                {
+                    "name": "awaitPromise",
+                    "parameters": [
+                        {
+                            "name": "promiseObjectId",
+                            "$ref": "RemoteObjectId",
+                            "description": "Identifier of the promise."
+                        },
+                        {
+                            "name": "returnByValue",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Whether the result is expected to be a JSON object that should be sent by value."
+                        },
+                        {
+                            "name": "generatePreview",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Whether preview should be generated for the result."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "result",
+                            "$ref": "RemoteObject",
+                            "description": "Promise result. Will contain rejected value if promise was rejected."
+                        },
+                        {
+                            "name": "exceptionDetails",
+                            "$ref": "ExceptionDetails",
+                            "optional": true,
+                            "description": "Exception details if stack strace is available."
+                        }
+                    ],
+                    "description": "Add handler to promise with given promise object id."
+                },
+                {
+                    "name": "callFunctionOn",
+                    "parameters": [
+                        {
+                            "name": "objectId",
+                            "$ref": "RemoteObjectId",
+                            "description": "Identifier of the object to call function on."
+                        },
+                        {
+                            "name": "functionDeclaration",
+                            "type": "string",
+                            "description": "Declaration of the function to call."
+                        },
+                        {
+                            "name": "arguments",
+                            "type": "array",
+                            "items": {
+                                "$ref": "CallArgument",
+                                "description": "Call argument."
+                            },
+                            "optional": true,
+                            "description": "Call arguments. All call arguments must belong to the same JavaScript world as the target object."
+                        },
+                        {
+                            "name": "silent",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "In silent mode exceptions thrown during evaluation are not reported and do not pause execution. Overrides <code>setPauseOnException</code> state."
+                        },
+                        {
+                            "name": "returnByValue",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Whether the result is expected to be a JSON object which should be sent by value."
+                        },
+                        {
+                            "name": "generatePreview",
+                            "type": "boolean",
+                            "optional": true,
+                            "experimental": true,
+                            "description": "Whether preview should be generated for the result."
+                        },
+                        {
+                            "name": "userGesture",
+                            "type": "boolean",
+                            "optional": true,
+                            "experimental": true,
+                            "description": "Whether execution should be treated as initiated by user in the UI."
+                        },
+                        {
+                            "name": "awaitPromise",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Whether execution should wait for promise to be resolved. If the result of evaluation is not a Promise, it's considered to be an error."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "result",
+                            "$ref": "RemoteObject",
+                            "description": "Call result."
+                        },
+                        {
+                            "name": "exceptionDetails",
+                            "$ref": "ExceptionDetails",
+                            "optional": true,
+                            "description": "Exception details."
+                        }
+                    ],
+                    "description": "Calls function with given declaration on the given object. Object group of the result is inherited from the target object."
+                },
+                {
+                    "name": "getProperties",
+                    "parameters": [
+                        {
+                            "name": "objectId",
+                            "$ref": "RemoteObjectId",
+                            "description": "Identifier of the object to return properties for."
+                        },
+                        {
+                            "name": "ownProperties",
+                            "optional": true,
+                            "type": "boolean",
+                            "description": "If true, returns properties belonging only to the element itself, not to its prototype chain."
+                        },
+                        {
+                            "name": "accessorPropertiesOnly",
+                            "optional": true,
+                            "type": "boolean",
+                            "description": "If true, returns accessor properties (with getter/setter) only; internal properties are not returned either.",
+                            "experimental": true
+                        },
+                        {
+                            "name": "generatePreview",
+                            "type": "boolean",
+                            "optional": true,
+                            "experimental": true,
+                            "description": "Whether preview should be generated for the results."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "result",
+                            "type": "array",
+                            "items": {
+                                "$ref": "PropertyDescriptor"
+                            },
+                            "description": "Object properties."
+                        },
+                        {
+                            "name": "internalProperties",
+                            "optional": true,
+                            "type": "array",
+                            "items": {
+                                "$ref": "InternalPropertyDescriptor"
+                            },
+                            "description": "Internal object properties (only of the element itself)."
+                        },
+                        {
+                            "name": "exceptionDetails",
+                            "$ref": "ExceptionDetails",
+                            "optional": true,
+                            "description": "Exception details."
+                        }
+                    ],
+                    "description": "Returns properties of a given object. Object group of the result is inherited from the target object."
+                },
+                {
+                    "name": "releaseObject",
+                    "parameters": [
+                        {
+                            "name": "objectId",
+                            "$ref": "RemoteObjectId",
+                            "description": "Identifier of the object to release."
+                        }
+                    ],
+                    "description": "Releases remote object with given id."
+                },
+                {
+                    "name": "releaseObjectGroup",
+                    "parameters": [
+                        {
+                            "name": "objectGroup",
+                            "type": "string",
+                            "description": "Symbolic object group name."
+                        }
+                    ],
+                    "description": "Releases all remote objects that belong to a given group."
+                },
+                {
+                    "name": "runIfWaitingForDebugger",
+                    "description": "Tells inspected instance to run if it was waiting for debugger to attach."
+                },
+                {
+                    "name": "enable",
+                    "description": "Enables reporting of execution contexts creation by means of <code>executionContextCreated</code> event. When the reporting gets enabled the event will be sent immediately for each existing execution context."
+                },
+                {
+                    "name": "disable",
+                    "description": "Disables reporting of execution contexts creation."
+                },
+                {
+                    "name": "discardConsoleEntries",
+                    "description": "Discards collected exceptions and console API calls."
+                },
+                {
+                    "name": "setCustomObjectFormatterEnabled",
+                    "parameters": [
+                        {
+                            "name": "enabled",
+                            "type": "boolean"
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "name": "compileScript",
+                    "parameters": [
+                        {
+                            "name": "expression",
+                            "type": "string",
+                            "description": "Expression to compile."
+                        },
+                        {
+                            "name": "sourceURL",
+                            "type": "string",
+                            "description": "Source url to be set for the script."
+                        },
+                        {
+                            "name": "persistScript",
+                            "type": "boolean",
+                            "description": "Specifies whether the compiled script should be persisted."
+                        },
+                        {
+                            "name": "executionContextId",
+                            "$ref": "ExecutionContextId",
+                            "optional": true,
+                            "description": "Specifies in which execution context to perform script run. If the parameter is omitted the evaluation will be performed in the context of the inspected page."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "scriptId",
+                            "$ref": "ScriptId",
+                            "optional": true,
+                            "description": "Id of the script."
+                        },
+                        {
+                            "name": "exceptionDetails",
+                            "$ref": "ExceptionDetails",
+                            "optional": true,
+                            "description": "Exception details."
+                        }
+                    ],
+                    "description": "Compiles expression."
+                },
+                {
+                    "name": "runScript",
+                    "parameters": [
+                        {
+                            "name": "scriptId",
+                            "$ref": "ScriptId",
+                            "description": "Id of the script to run."
+                        },
+                        {
+                            "name": "executionContextId",
+                            "$ref": "ExecutionContextId",
+                            "optional": true,
+                            "description": "Specifies in which execution context to perform script run. If the parameter is omitted the evaluation will be performed in the context of the inspected page."
+                        },
+                        {
+                            "name": "objectGroup",
+                            "type": "string",
+                            "optional": true,
+                            "description": "Symbolic group name that can be used to release multiple objects."
+                        },
+                        {
+                            "name": "silent",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "In silent mode exceptions thrown during evaluation are not reported and do not pause execution. Overrides <code>setPauseOnException</code> state."
+                        },
+                        {
+                            "name": "includeCommandLineAPI",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Determines whether Command Line API should be available during the evaluation."
+                        },
+                        {
+                            "name": "returnByValue",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Whether the result is expected to be a JSON object which should be sent by value."
+                        },
+                        {
+                            "name": "generatePreview",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Whether preview should be generated for the result."
+                        },
+                        {
+                            "name": "awaitPromise",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Whether execution should wait for promise to be resolved. If the result of evaluation is not a Promise, it's considered to be an error."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "result",
+                            "$ref": "RemoteObject",
+                            "description": "Run result."
+                        },
+                        {
+                            "name": "exceptionDetails",
+                            "$ref": "ExceptionDetails",
+                            "optional": true,
+                            "description": "Exception details."
+                        }
+                    ],
+                    "description": "Runs script with given id in a given context."
+                }
+            ],
+            "events": [
+                {
+                    "name": "executionContextCreated",
+                    "parameters": [
+                        {
+                            "name": "context",
+                            "$ref": "ExecutionContextDescription",
+                            "description": "A newly created execution context."
+                        }
+                    ],
+                    "description": "Issued when new execution context is created."
+                },
+                {
+                    "name": "executionContextDestroyed",
+                    "parameters": [
+                        {
+                            "name": "executionContextId",
+                            "$ref": "ExecutionContextId",
+                            "description": "Id of the destroyed context"
+                        }
+                    ],
+                    "description": "Issued when execution context is destroyed."
+                },
+                {
+                    "name": "executionContextsCleared",
+                    "description": "Issued when all executionContexts were cleared in browser"
+                },
+                {
+                    "name": "exceptionThrown",
+                    "description": "Issued when exception was thrown and unhandled.",
+                    "parameters": [
+                        {
+                            "name": "timestamp",
+                            "$ref": "Timestamp",
+                            "description": "Timestamp of the exception."
+                        },
+                        {
+                            "name": "exceptionDetails",
+                            "$ref": "ExceptionDetails"
+                        }
+                    ]
+                },
+                {
+                    "name": "exceptionRevoked",
+                    "description": "Issued when unhandled exception was revoked.",
+                    "parameters": [
+                        {
+                            "name": "reason",
+                            "type": "string",
+                            "description": "Reason describing why exception was revoked."
+                        },
+                        {
+                            "name": "exceptionId",
+                            "type": "integer",
+                            "description": "The id of revoked exception, as reported in <code>exceptionUnhandled</code>."
+                        }
+                    ]
+                },
+                {
+                    "name": "consoleAPICalled",
+                    "description": "Issued when console API was called.",
+                    "parameters": [
+                        {
+                            "name": "type",
+                            "type": "string",
+                            "enum": [
+                                "log",
+                                "debug",
+                                "info",
+                                "error",
+                                "warning",
+                                "dir",
+                                "dirxml",
+                                "table",
+                                "trace",
+                                "clear",
+                                "startGroup",
+                                "startGroupCollapsed",
+                                "endGroup",
+                                "assert",
+                                "profile",
+                                "profileEnd",
+                                "count",
+                                "timeEnd"
+                            ],
+                            "description": "Type of the call."
+                        },
+                        {
+                            "name": "args",
+                            "type": "array",
+                            "items": {
+                                "$ref": "RemoteObject"
+                            },
+                            "description": "Call arguments."
+                        },
+                        {
+                            "name": "executionContextId",
+                            "$ref": "ExecutionContextId",
+                            "description": "Identifier of the context where the call was made."
+                        },
+                        {
+                            "name": "timestamp",
+                            "$ref": "Timestamp",
+                            "description": "Call timestamp."
+                        },
+                        {
+                            "name": "stackTrace",
+                            "$ref": "StackTrace",
+                            "optional": true,
+                            "description": "Stack trace captured when the call was made."
+                        }
+                    ]
+                },
+                {
+                    "name": "inspectRequested",
+                    "description": "Issued when object should be inspected (for example, as a result of inspect() command line API call).",
+                    "parameters": [
+                        {
+                            "name": "object",
+                            "$ref": "RemoteObject"
+                        },
+                        {
+                            "name": "hints",
+                            "type": "object"
+                        }
+                    ]
+                }
+            ]
+        },
+        {
+            "domain": "Debugger",
+            "description": "Debugger domain exposes JavaScript debugging capabilities. It allows setting and removing breakpoints, stepping through execution, exploring stack traces, etc.",
+            "dependencies": [
+                "Runtime"
+            ],
+            "types": [
+                {
+                    "id": "BreakpointId",
+                    "type": "string",
+                    "description": "Breakpoint identifier."
+                },
+                {
+                    "id": "CallFrameId",
+                    "type": "string",
+                    "description": "Call frame identifier."
+                },
+                {
+                    "id": "Location",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "scriptId",
+                            "$ref": "Runtime.ScriptId",
+                            "description": "Script identifier as reported in the <code>Debugger.scriptParsed</code>."
+                        },
+                        {
+                            "name": "lineNumber",
+                            "type": "integer",
+                            "description": "Line number in the script (0-based)."
+                        },
+                        {
+                            "name": "columnNumber",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "Column number in the script (0-based)."
+                        }
+                    ],
+                    "description": "Location in the source code."
+                },
+                {
+                    "id": "ScriptPosition",
+                    "experimental": true,
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "lineNumber",
+                            "type": "integer"
+                        },
+                        {
+                            "name": "columnNumber",
+                            "type": "integer"
+                        }
+                    ],
+                    "description": "Location in the source code."
+                },
+                {
+                    "id": "CallFrame",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "callFrameId",
+                            "$ref": "CallFrameId",
+                            "description": "Call frame identifier. This identifier is only valid while the virtual machine is paused."
+                        },
+                        {
+                            "name": "functionName",
+                            "type": "string",
+                            "description": "Name of the JavaScript function called on this call frame."
+                        },
+                        {
+                            "name": "functionLocation",
+                            "$ref": "Location",
+                            "optional": true,
+                            "experimental": true,
+                            "description": "Location in the source code."
+                        },
+                        {
+                            "name": "location",
+                            "$ref": "Location",
+                            "description": "Location in the source code."
+                        },
+                        {
+                            "name": "scopeChain",
+                            "type": "array",
+                            "items": {
+                                "$ref": "Scope"
+                            },
+                            "description": "Scope chain for this call frame."
+                        },
+                        {
+                            "name": "this",
+                            "$ref": "Runtime.RemoteObject",
+                            "description": "<code>this</code> object for this call frame."
+                        },
+                        {
+                            "name": "returnValue",
+                            "$ref": "Runtime.RemoteObject",
+                            "optional": true,
+                            "description": "The value being returned, if the function is at return point."
+                        }
+                    ],
+                    "description": "JavaScript call frame. Array of call frames form the call stack."
+                },
+                {
+                    "id": "Scope",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "type",
+                            "type": "string",
+                            "enum": [
+                                "global",
+                                "local",
+                                "with",
+                                "closure",
+                                "catch",
+                                "block",
+                                "script",
+                                "eval",
+                                "module"
+                            ],
+                            "description": "Scope type."
+                        },
+                        {
+                            "name": "object",
+                            "$ref": "Runtime.RemoteObject",
+                            "description": "Object representing the scope. For <code>global</code> and <code>with</code> scopes it represents the actual object; for the rest of the scopes, it is artificial transient object enumerating scope variables as its properties."
+                        },
+                        {
+                            "name": "name",
+                            "type": "string",
+                            "optional": true
+                        },
+                        {
+                            "name": "startLocation",
+                            "$ref": "Location",
+                            "optional": true,
+                            "description": "Location in the source code where scope starts"
+                        },
+                        {
+                            "name": "endLocation",
+                            "$ref": "Location",
+                            "optional": true,
+                            "description": "Location in the source code where scope ends"
+                        }
+                    ],
+                    "description": "Scope description."
+                },
+                {
+                    "id": "SearchMatch",
+                    "type": "object",
+                    "description": "Search match for resource.",
+                    "properties": [
+                        {
+                            "name": "lineNumber",
+                            "type": "number",
+                            "description": "Line number in resource content."
+                        },
+                        {
+                            "name": "lineContent",
+                            "type": "string",
+                            "description": "Line with match content."
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "id": "BreakLocation",
+                    "type": "object",
+                    "properties": [
+                        {
+                            "name": "scriptId",
+                            "$ref": "Runtime.ScriptId",
+                            "description": "Script identifier as reported in the <code>Debugger.scriptParsed</code>."
+                        },
+                        {
+                            "name": "lineNumber",
+                            "type": "integer",
+                            "description": "Line number in the script (0-based)."
+                        },
+                        {
+                            "name": "columnNumber",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "Column number in the script (0-based)."
+                        },
+                        {
+                            "name": "type",
+                            "type": "string",
+                            "enum": [
+                                "debuggerStatement",
+                                "call",
+                                "return"
+                            ],
+                            "optional": true
+                        }
+                    ],
+                    "experimental": true
+                }
+            ],
+            "commands": [
+                {
+                    "name": "enable",
+                    "description": "Enables debugger for the given page. Clients should not assume that the debugging has been enabled until the result for this command is received."
+                },
+                {
+                    "name": "disable",
+                    "description": "Disables debugger for given page."
+                },
+                {
+                    "name": "setBreakpointsActive",
+                    "parameters": [
+                        {
+                            "name": "active",
+                            "type": "boolean",
+                            "description": "New value for breakpoints active state."
+                        }
+                    ],
+                    "description": "Activates / deactivates all breakpoints on the page."
+                },
+                {
+                    "name": "setSkipAllPauses",
+                    "parameters": [
+                        {
+                            "name": "skip",
+                            "type": "boolean",
+                            "description": "New value for skip pauses state."
+                        }
+                    ],
+                    "description": "Makes page not interrupt on any pauses (breakpoint, exception, dom exception etc)."
+                },
+                {
+                    "name": "setBreakpointByUrl",
+                    "parameters": [
+                        {
+                            "name": "lineNumber",
+                            "type": "integer",
+                            "description": "Line number to set breakpoint at."
+                        },
+                        {
+                            "name": "url",
+                            "type": "string",
+                            "optional": true,
+                            "description": "URL of the resources to set breakpoint on."
+                        },
+                        {
+                            "name": "urlRegex",
+                            "type": "string",
+                            "optional": true,
+                            "description": "Regex pattern for the URLs of the resources to set breakpoints on. Either <code>url</code> or <code>urlRegex</code> must be specified."
+                        },
+                        {
+                            "name": "columnNumber",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "Offset in the line to set breakpoint at."
+                        },
+                        {
+                            "name": "condition",
+                            "type": "string",
+                            "optional": true,
+                            "description": "Expression to use as a breakpoint condition. When specified, debugger will only stop on the breakpoint if this expression evaluates to true."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "breakpointId",
+                            "$ref": "BreakpointId",
+                            "description": "Id of the created breakpoint for further reference."
+                        },
+                        {
+                            "name": "locations",
+                            "type": "array",
+                            "items": {
+                                "$ref": "Location"
+                            },
+                            "description": "List of the locations this breakpoint resolved into upon addition."
+                        }
+                    ],
+                    "description": "Sets JavaScript breakpoint at given location specified either by URL or URL regex. Once this command is issued, all existing parsed scripts will have breakpoints resolved and returned in <code>locations</code> property. Further matching script parsing will result in subsequent <code>breakpointResolved</code> events issued. This logical breakpoint will survive page reloads."
+                },
+                {
+                    "name": "setBreakpoint",
+                    "parameters": [
+                        {
+                            "name": "location",
+                            "$ref": "Location",
+                            "description": "Location to set breakpoint in."
+                        },
+                        {
+                            "name": "condition",
+                            "type": "string",
+                            "optional": true,
+                            "description": "Expression to use as a breakpoint condition. When specified, debugger will only stop on the breakpoint if this expression evaluates to true."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "breakpointId",
+                            "$ref": "BreakpointId",
+                            "description": "Id of the created breakpoint for further reference."
+                        },
+                        {
+                            "name": "actualLocation",
+                            "$ref": "Location",
+                            "description": "Location this breakpoint resolved into."
+                        }
+                    ],
+                    "description": "Sets JavaScript breakpoint at a given location."
+                },
+                {
+                    "name": "removeBreakpoint",
+                    "parameters": [
+                        {
+                            "name": "breakpointId",
+                            "$ref": "BreakpointId"
+                        }
+                    ],
+                    "description": "Removes JavaScript breakpoint."
+                },
+                {
+                    "name": "getPossibleBreakpoints",
+                    "parameters": [
+                        {
+                            "name": "start",
+                            "$ref": "Location",
+                            "description": "Start of range to search possible breakpoint locations in."
+                        },
+                        {
+                            "name": "end",
+                            "$ref": "Location",
+                            "optional": true,
+                            "description": "End of range to search possible breakpoint locations in (excluding). When not specified, end of scripts is used as end of range."
+                        },
+                        {
+                            "name": "restrictToFunction",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Only consider locations which are in the same (non-nested) function as start."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "locations",
+                            "type": "array",
+                            "items": {
+                                "$ref": "BreakLocation"
+                            },
+                            "description": "List of the possible breakpoint locations."
+                        }
+                    ],
+                    "description": "Returns possible locations for breakpoint. scriptId in start and end range locations should be the same.",
+                    "experimental": true
+                },
+                {
+                    "name": "continueToLocation",
+                    "parameters": [
+                        {
+                            "name": "location",
+                            "$ref": "Location",
+                            "description": "Location to continue to."
+                        },
+                        {
+                            "name": "targetCallFrames",
+                            "type": "string",
+                            "enum": [
+                                "any",
+                                "current"
+                            ],
+                            "optional": true,
+                            "experimental": true
+                        }
+                    ],
+                    "description": "Continues execution until specific location is reached."
+                },
+                {
+                    "name": "stepOver",
+                    "description": "Steps over the statement."
+                },
+                {
+                    "name": "stepInto",
+                    "description": "Steps into the function call."
+                },
+                {
+                    "name": "stepOut",
+                    "description": "Steps out of the function call."
+                },
+                {
+                    "name": "pause",
+                    "description": "Stops on the next JavaScript statement."
+                },
+                {
+                    "name": "scheduleStepIntoAsync",
+                    "description": "Steps into next scheduled async task if any is scheduled before next pause. Returns success when async task is actually scheduled, returns error if no task were scheduled or another scheduleStepIntoAsync was called.",
+                    "experimental": true
+                },
+                {
+                    "name": "resume",
+                    "description": "Resumes JavaScript execution."
+                },
+                {
+                    "name": "searchInContent",
+                    "parameters": [
+                        {
+                            "name": "scriptId",
+                            "$ref": "Runtime.ScriptId",
+                            "description": "Id of the script to search in."
+                        },
+                        {
+                            "name": "query",
+                            "type": "string",
+                            "description": "String to search for."
+                        },
+                        {
+                            "name": "caseSensitive",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "If true, search is case sensitive."
+                        },
+                        {
+                            "name": "isRegex",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "If true, treats string parameter as regex."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "result",
+                            "type": "array",
+                            "items": {
+                                "$ref": "SearchMatch"
+                            },
+                            "description": "List of search matches."
+                        }
+                    ],
+                    "experimental": true,
+                    "description": "Searches for given string in script content."
+                },
+                {
+                    "name": "setScriptSource",
+                    "parameters": [
+                        {
+                            "name": "scriptId",
+                            "$ref": "Runtime.ScriptId",
+                            "description": "Id of the script to edit."
+                        },
+                        {
+                            "name": "scriptSource",
+                            "type": "string",
+                            "description": "New content of the script."
+                        },
+                        {
+                            "name": "dryRun",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": " If true the change will not actually be applied. Dry run may be used to get result description without actually modifying the code."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "callFrames",
+                            "type": "array",
+                            "optional": true,
+                            "items": {
+                                "$ref": "CallFrame"
+                            },
+                            "description": "New stack trace in case editing has happened while VM was stopped."
+                        },
+                        {
+                            "name": "stackChanged",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Whether current call stack  was modified after applying the changes."
+                        },
+                        {
+                            "name": "asyncStackTrace",
+                            "$ref": "Runtime.StackTrace",
+                            "optional": true,
+                            "description": "Async stack trace, if any."
+                        },
+                        {
+                            "name": "exceptionDetails",
+                            "optional": true,
+                            "$ref": "Runtime.ExceptionDetails",
+                            "description": "Exception details if any."
+                        }
+                    ],
+                    "description": "Edits JavaScript source live."
+                },
+                {
+                    "name": "restartFrame",
+                    "parameters": [
+                        {
+                            "name": "callFrameId",
+                            "$ref": "CallFrameId",
+                            "description": "Call frame identifier to evaluate on."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "callFrames",
+                            "type": "array",
+                            "items": {
+                                "$ref": "CallFrame"
+                            },
+                            "description": "New stack trace."
+                        },
+                        {
+                            "name": "asyncStackTrace",
+                            "$ref": "Runtime.StackTrace",
+                            "optional": true,
+                            "description": "Async stack trace, if any."
+                        }
+                    ],
+                    "description": "Restarts particular call frame from the beginning."
+                },
+                {
+                    "name": "getScriptSource",
+                    "parameters": [
+                        {
+                            "name": "scriptId",
+                            "$ref": "Runtime.ScriptId",
+                            "description": "Id of the script to get source for."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "scriptSource",
+                            "type": "string",
+                            "description": "Script source."
+                        }
+                    ],
+                    "description": "Returns source for the script with given id."
+                },
+                {
+                    "name": "setPauseOnExceptions",
+                    "parameters": [
+                        {
+                            "name": "state",
+                            "type": "string",
+                            "enum": [
+                                "none",
+                                "uncaught",
+                                "all"
+                            ],
+                            "description": "Pause on exceptions mode."
+                        }
+                    ],
+                    "description": "Defines pause on exceptions state. Can be set to stop on all exceptions, uncaught exceptions or no exceptions. Initial pause on exceptions state is <code>none</code>."
+                },
+                {
+                    "name": "evaluateOnCallFrame",
+                    "parameters": [
+                        {
+                            "name": "callFrameId",
+                            "$ref": "CallFrameId",
+                            "description": "Call frame identifier to evaluate on."
+                        },
+                        {
+                            "name": "expression",
+                            "type": "string",
+                            "description": "Expression to evaluate."
+                        },
+                        {
+                            "name": "objectGroup",
+                            "type": "string",
+                            "optional": true,
+                            "description": "String object group name to put result into (allows rapid releasing resulting object handles using <code>releaseObjectGroup</code>)."
+                        },
+                        {
+                            "name": "includeCommandLineAPI",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Specifies whether command line API should be available to the evaluated expression, defaults to false."
+                        },
+                        {
+                            "name": "silent",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "In silent mode exceptions thrown during evaluation are not reported and do not pause execution. Overrides <code>setPauseOnException</code> state."
+                        },
+                        {
+                            "name": "returnByValue",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Whether the result is expected to be a JSON object that should be sent by value."
+                        },
+                        {
+                            "name": "generatePreview",
+                            "type": "boolean",
+                            "optional": true,
+                            "experimental": true,
+                            "description": "Whether preview should be generated for the result."
+                        },
+                        {
+                            "name": "throwOnSideEffect",
+                            "type": "boolean",
+                            "optional": true,
+                            "experimental": true,
+                            "description": "Whether to throw an exception if side effect cannot be ruled out during evaluation."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "result",
+                            "$ref": "Runtime.RemoteObject",
+                            "description": "Object wrapper for the evaluation result."
+                        },
+                        {
+                            "name": "exceptionDetails",
+                            "$ref": "Runtime.ExceptionDetails",
+                            "optional": true,
+                            "description": "Exception details."
+                        }
+                    ],
+                    "description": "Evaluates expression on a given call frame."
+                },
+                {
+                    "name": "setVariableValue",
+                    "parameters": [
+                        {
+                            "name": "scopeNumber",
+                            "type": "integer",
+                            "description": "0-based number of scope as was listed in scope chain. Only 'local', 'closure' and 'catch' scope types are allowed. Other scopes could be manipulated manually."
+                        },
+                        {
+                            "name": "variableName",
+                            "type": "string",
+                            "description": "Variable name."
+                        },
+                        {
+                            "name": "newValue",
+                            "$ref": "Runtime.CallArgument",
+                            "description": "New variable value."
+                        },
+                        {
+                            "name": "callFrameId",
+                            "$ref": "CallFrameId",
+                            "description": "Id of callframe that holds variable."
+                        }
+                    ],
+                    "description": "Changes value of variable in a callframe. Object-based scopes are not supported and must be mutated manually."
+                },
+                {
+                    "name": "setAsyncCallStackDepth",
+                    "parameters": [
+                        {
+                            "name": "maxDepth",
+                            "type": "integer",
+                            "description": "Maximum depth of async call stacks. Setting to <code>0</code> will effectively disable collecting async call stacks (default)."
+                        }
+                    ],
+                    "description": "Enables or disables async call stacks tracking."
+                },
+                {
+                    "name": "setBlackboxPatterns",
+                    "parameters": [
+                        {
+                            "name": "patterns",
+                            "type": "array",
+                            "items": {
+                                "type": "string"
+                            },
+                            "description": "Array of regexps that will be used to check script url for blackbox state."
+                        }
+                    ],
+                    "experimental": true,
+                    "description": "Replace previous blackbox patterns with passed ones. Forces backend to skip stepping/pausing in scripts with url matching one of the patterns. VM will try to leave blackboxed script by performing 'step in' several times, finally resorting to 'step out' if unsuccessful."
+                },
+                {
+                    "name": "setBlackboxedRanges",
+                    "parameters": [
+                        {
+                            "name": "scriptId",
+                            "$ref": "Runtime.ScriptId",
+                            "description": "Id of the script."
+                        },
+                        {
+                            "name": "positions",
+                            "type": "array",
+                            "items": {
+                                "$ref": "ScriptPosition"
+                            }
+                        }
+                    ],
+                    "experimental": true,
+                    "description": "Makes backend skip steps in the script in blackboxed ranges. VM will try leave blacklisted scripts by performing 'step in' several times, finally resorting to 'step out' if unsuccessful. Positions array contains positions where blackbox state is changed. First interval isn't blackboxed. Array should be sorted."
+                }
+            ],
+            "events": [
+                {
+                    "name": "scriptParsed",
+                    "parameters": [
+                        {
+                            "name": "scriptId",
+                            "$ref": "Runtime.ScriptId",
+                            "description": "Identifier of the script parsed."
+                        },
+                        {
+                            "name": "url",
+                            "type": "string",
+                            "description": "URL or name of the script parsed (if any)."
+                        },
+                        {
+                            "name": "startLine",
+                            "type": "integer",
+                            "description": "Line offset of the script within the resource with given URL (for script tags)."
+                        },
+                        {
+                            "name": "startColumn",
+                            "type": "integer",
+                            "description": "Column offset of the script within the resource with given URL."
+                        },
+                        {
+                            "name": "endLine",
+                            "type": "integer",
+                            "description": "Last line of the script."
+                        },
+                        {
+                            "name": "endColumn",
+                            "type": "integer",
+                            "description": "Length of the last line of the script."
+                        },
+                        {
+                            "name": "executionContextId",
+                            "$ref": "Runtime.ExecutionContextId",
+                            "description": "Specifies script creation context."
+                        },
+                        {
+                            "name": "hash",
+                            "type": "string",
+                            "description": "Content hash of the script."
+                        },
+                        {
+                            "name": "executionContextAuxData",
+                            "type": "object",
+                            "optional": true,
+                            "description": "Embedder-specific auxiliary data."
+                        },
+                        {
+                            "name": "isLiveEdit",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "True, if this script is generated as a result of the live edit operation.",
+                            "experimental": true
+                        },
+                        {
+                            "name": "sourceMapURL",
+                            "type": "string",
+                            "optional": true,
+                            "description": "URL of source map associated with script (if any)."
+                        },
+                        {
+                            "name": "hasSourceURL",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "True, if this script has sourceURL.",
+                            "experimental": true
+                        },
+                        {
+                            "name": "isModule",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "True, if this script is ES6 module.",
+                            "experimental": true
+                        },
+                        {
+                            "name": "length",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "This script length.",
+                            "experimental": true
+                        },
+                        {
+                            "name": "stackTrace",
+                            "$ref": "Runtime.StackTrace",
+                            "optional": true,
+                            "description": "JavaScript top stack frame of where the script parsed event was triggered if available.",
+                            "experimental": true
+                        }
+                    ],
+                    "description": "Fired when virtual machine parses script. This event is also fired for all known and uncollected scripts upon enabling debugger."
+                },
+                {
+                    "name": "scriptFailedToParse",
+                    "parameters": [
+                        {
+                            "name": "scriptId",
+                            "$ref": "Runtime.ScriptId",
+                            "description": "Identifier of the script parsed."
+                        },
+                        {
+                            "name": "url",
+                            "type": "string",
+                            "description": "URL or name of the script parsed (if any)."
+                        },
+                        {
+                            "name": "startLine",
+                            "type": "integer",
+                            "description": "Line offset of the script within the resource with given URL (for script tags)."
+                        },
+                        {
+                            "name": "startColumn",
+                            "type": "integer",
+                            "description": "Column offset of the script within the resource with given URL."
+                        },
+                        {
+                            "name": "endLine",
+                            "type": "integer",
+                            "description": "Last line of the script."
+                        },
+                        {
+                            "name": "endColumn",
+                            "type": "integer",
+                            "description": "Length of the last line of the script."
+                        },
+                        {
+                            "name": "executionContextId",
+                            "$ref": "Runtime.ExecutionContextId",
+                            "description": "Specifies script creation context."
+                        },
+                        {
+                            "name": "hash",
+                            "type": "string",
+                            "description": "Content hash of the script."
+                        },
+                        {
+                            "name": "executionContextAuxData",
+                            "type": "object",
+                            "optional": true,
+                            "description": "Embedder-specific auxiliary data."
+                        },
+                        {
+                            "name": "sourceMapURL",
+                            "type": "string",
+                            "optional": true,
+                            "description": "URL of source map associated with script (if any)."
+                        },
+                        {
+                            "name": "hasSourceURL",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "True, if this script has sourceURL.",
+                            "experimental": true
+                        },
+                        {
+                            "name": "isModule",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "True, if this script is ES6 module.",
+                            "experimental": true
+                        },
+                        {
+                            "name": "length",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "This script length.",
+                            "experimental": true
+                        },
+                        {
+                            "name": "stackTrace",
+                            "$ref": "Runtime.StackTrace",
+                            "optional": true,
+                            "description": "JavaScript top stack frame of where the script parsed event was triggered if available.",
+                            "experimental": true
+                        }
+                    ],
+                    "description": "Fired when virtual machine fails to parse the script."
+                },
+                {
+                    "name": "breakpointResolved",
+                    "parameters": [
+                        {
+                            "name": "breakpointId",
+                            "$ref": "BreakpointId",
+                            "description": "Breakpoint unique identifier."
+                        },
+                        {
+                            "name": "location",
+                            "$ref": "Location",
+                            "description": "Actual breakpoint location."
+                        }
+                    ],
+                    "description": "Fired when breakpoint is resolved to an actual script and location."
+                },
+                {
+                    "name": "paused",
+                    "parameters": [
+                        {
+                            "name": "callFrames",
+                            "type": "array",
+                            "items": {
+                                "$ref": "CallFrame"
+                            },
+                            "description": "Call stack the virtual machine stopped on."
+                        },
+                        {
+                            "name": "reason",
+                            "type": "string",
+                            "enum": [
+                                "XHR",
+                                "DOM",
+                                "EventListener",
+                                "exception",
+                                "assert",
+                                "debugCommand",
+                                "promiseRejection",
+                                "OOM",
+                                "other",
+                                "ambiguous"
+                            ],
+                            "description": "Pause reason."
+                        },
+                        {
+                            "name": "data",
+                            "type": "object",
+                            "optional": true,
+                            "description": "Object containing break-specific auxiliary properties."
+                        },
+                        {
+                            "name": "hitBreakpoints",
+                            "type": "array",
+                            "optional": true,
+                            "items": {
+                                "type": "string"
+                            },
+                            "description": "Hit breakpoints IDs"
+                        },
+                        {
+                            "name": "asyncStackTrace",
+                            "$ref": "Runtime.StackTrace",
+                            "optional": true,
+                            "description": "Async stack trace, if any."
+                        }
+                    ],
+                    "description": "Fired when the virtual machine stopped on breakpoint or exception or any other stop criteria."
+                },
+                {
+                    "name": "resumed",
+                    "description": "Fired when the virtual machine resumed execution."
+                }
+            ]
+        },
+        {
+            "domain": "Console",
+            "description": "This domain is deprecated - use Runtime or Log instead.",
+            "dependencies": [
+                "Runtime"
+            ],
+            "deprecated": true,
+            "types": [
+                {
+                    "id": "ConsoleMessage",
+                    "type": "object",
+                    "description": "Console message.",
+                    "properties": [
+                        {
+                            "name": "source",
+                            "type": "string",
+                            "enum": [
+                                "xml",
+                                "javascript",
+                                "network",
+                                "console-api",
+                                "storage",
+                                "appcache",
+                                "rendering",
+                                "security",
+                                "other",
+                                "deprecation",
+                                "worker"
+                            ],
+                            "description": "Message source."
+                        },
+                        {
+                            "name": "level",
+                            "type": "string",
+                            "enum": [
+                                "log",
+                                "warning",
+                                "error",
+                                "debug",
+                                "info"
+                            ],
+                            "description": "Message severity."
+                        },
+                        {
+                            "name": "text",
+                            "type": "string",
+                            "description": "Message text."
+                        },
+                        {
+                            "name": "url",
+                            "type": "string",
+                            "optional": true,
+                            "description": "URL of the message origin."
+                        },
+                        {
+                            "name": "line",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "Line number in the resource that generated this message (1-based)."
+                        },
+                        {
+                            "name": "column",
+                            "type": "integer",
+                            "optional": true,
+                            "description": "Column number in the resource that generated this message (1-based)."
+                        }
+                    ]
+                }
+            ],
+            "commands": [
+                {
+                    "name": "enable",
+                    "description": "Enables console domain, sends the messages collected so far to the client by means of the <code>messageAdded</code> notification."
+                },
+                {
+                    "name": "disable",
+                    "description": "Disables console domain, prevents further console messages from being reported to the client."
+                },
+                {
+                    "name": "clearMessages",
+                    "description": "Does nothing."
+                }
+            ],
+            "events": [
+                {
+                    "name": "messageAdded",
+                    "parameters": [
+                        {
+                            "name": "message",
+                            "$ref": "ConsoleMessage",
+                            "description": "Console message that has been added."
+                        }
+                    ],
+                    "description": "Issued when new console message is added."
+                }
+            ]
+        },
+        {
+            "domain": "Profiler",
+            "dependencies": [
+                "Runtime",
+                "Debugger"
+            ],
+            "types": [
+                {
+                    "id": "ProfileNode",
+                    "type": "object",
+                    "description": "Profile node. Holds callsite information, execution statistics and child nodes.",
+                    "properties": [
+                        {
+                            "name": "id",
+                            "type": "integer",
+                            "description": "Unique id of the node."
+                        },
+                        {
+                            "name": "callFrame",
+                            "$ref": "Runtime.CallFrame",
+                            "description": "Function location."
+                        },
+                        {
+                            "name": "hitCount",
+                            "type": "integer",
+                            "optional": true,
+                            "experimental": true,
+                            "description": "Number of samples where this node was on top of the call stack."
+                        },
+                        {
+                            "name": "children",
+                            "type": "array",
+                            "items": {
+                                "type": "integer"
+                            },
+                            "optional": true,
+                            "description": "Child node ids."
+                        },
+                        {
+                            "name": "deoptReason",
+                            "type": "string",
+                            "optional": true,
+                            "description": "The reason of being not optimized. The function may be deoptimized or marked as don't optimize."
+                        },
+                        {
+                            "name": "positionTicks",
+                            "type": "array",
+                            "items": {
+                                "$ref": "PositionTickInfo"
+                            },
+                            "optional": true,
+                            "experimental": true,
+                            "description": "An array of source position ticks."
+                        }
+                    ]
+                },
+                {
+                    "id": "Profile",
+                    "type": "object",
+                    "description": "Profile.",
+                    "properties": [
+                        {
+                            "name": "nodes",
+                            "type": "array",
+                            "items": {
+                                "$ref": "ProfileNode"
+                            },
+                            "description": "The list of profile nodes. First item is the root node."
+                        },
+                        {
+                            "name": "startTime",
+                            "type": "number",
+                            "description": "Profiling start timestamp in microseconds."
+                        },
+                        {
+                            "name": "endTime",
+                            "type": "number",
+                            "description": "Profiling end timestamp in microseconds."
+                        },
+                        {
+                            "name": "samples",
+                            "optional": true,
+                            "type": "array",
+                            "items": {
+                                "type": "integer"
+                            },
+                            "description": "Ids of samples top nodes."
+                        },
+                        {
+                            "name": "timeDeltas",
+                            "optional": true,
+                            "type": "array",
+                            "items": {
+                                "type": "integer"
+                            },
+                            "description": "Time intervals between adjacent samples in microseconds. The first delta is relative to the profile startTime."
+                        }
+                    ]
+                },
+                {
+                    "id": "PositionTickInfo",
+                    "type": "object",
+                    "experimental": true,
+                    "description": "Specifies a number of samples attributed to a certain source position.",
+                    "properties": [
+                        {
+                            "name": "line",
+                            "type": "integer",
+                            "description": "Source line number (1-based)."
+                        },
+                        {
+                            "name": "ticks",
+                            "type": "integer",
+                            "description": "Number of samples attributed to the source line."
+                        }
+                    ]
+                },
+                {
+                    "id": "CoverageRange",
+                    "type": "object",
+                    "description": "Coverage data for a source range.",
+                    "properties": [
+                        {
+                            "name": "startOffset",
+                            "type": "integer",
+                            "description": "JavaScript script source offset for the range start."
+                        },
+                        {
+                            "name": "endOffset",
+                            "type": "integer",
+                            "description": "JavaScript script source offset for the range end."
+                        },
+                        {
+                            "name": "count",
+                            "type": "integer",
+                            "description": "Collected execution count of the source range."
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "id": "FunctionCoverage",
+                    "type": "object",
+                    "description": "Coverage data for a JavaScript function.",
+                    "properties": [
+                        {
+                            "name": "functionName",
+                            "type": "string",
+                            "description": "JavaScript function name."
+                        },
+                        {
+                            "name": "ranges",
+                            "type": "array",
+                            "items": {
+                                "$ref": "CoverageRange"
+                            },
+                            "description": "Source ranges inside the function with coverage data."
+                        }
+                    ],
+                    "experimental": true
+                },
+                {
+                    "id": "ScriptCoverage",
+                    "type": "object",
+                    "description": "Coverage data for a JavaScript script.",
+                    "properties": [
+                        {
+                            "name": "scriptId",
+                            "$ref": "Runtime.ScriptId",
+                            "description": "JavaScript script id."
+                        },
+                        {
+                            "name": "url",
+                            "type": "string",
+                            "description": "JavaScript script name or url."
+                        },
+                        {
+                            "name": "functions",
+                            "type": "array",
+                            "items": {
+                                "$ref": "FunctionCoverage"
+                            },
+                            "description": "Functions contained in the script that has coverage data."
+                        }
+                    ],
+                    "experimental": true
+                }
+            ],
+            "commands": [
+                {
+                    "name": "enable"
+                },
+                {
+                    "name": "disable"
+                },
+                {
+                    "name": "setSamplingInterval",
+                    "parameters": [
+                        {
+                            "name": "interval",
+                            "type": "integer",
+                            "description": "New sampling interval in microseconds."
+                        }
+                    ],
+                    "description": "Changes CPU profiler sampling interval. Must be called before CPU profiles recording started."
+                },
+                {
+                    "name": "start"
+                },
+                {
+                    "name": "stop",
+                    "returns": [
+                        {
+                            "name": "profile",
+                            "$ref": "Profile",
+                            "description": "Recorded profile."
+                        }
+                    ]
+                },
+                {
+                    "name": "startPreciseCoverage",
+                    "parameters": [
+                        {
+                            "name": "callCount",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "Collect accurate call counts beyond simple 'covered' or 'not covered'."
+                        }
+                    ],
+                    "description": "Enable precise code coverage. Coverage data for JavaScript executed before enabling precise code coverage may be incomplete. Enabling prevents running optimized code and resets execution counters.",
+                    "experimental": true
+                },
+                {
+                    "name": "stopPreciseCoverage",
+                    "description": "Disable precise code coverage. Disabling releases unnecessary execution count records and allows executing optimized code.",
+                    "experimental": true
+                },
+                {
+                    "name": "takePreciseCoverage",
+                    "returns": [
+                        {
+                            "name": "result",
+                            "type": "array",
+                            "items": {
+                                "$ref": "ScriptCoverage"
+                            },
+                            "description": "Coverage data for the current isolate."
+                        }
+                    ],
+                    "description": "Collect coverage data for the current isolate, and resets execution counters. Precise code coverage needs to have started.",
+                    "experimental": true
+                },
+                {
+                    "name": "getBestEffortCoverage",
+                    "returns": [
+                        {
+                            "name": "result",
+                            "type": "array",
+                            "items": {
+                                "$ref": "ScriptCoverage"
+                            },
+                            "description": "Coverage data for the current isolate."
+                        }
+                    ],
+                    "description": "Collect coverage data for the current isolate. The coverage data may be incomplete due to garbage collection.",
+                    "experimental": true
+                }
+            ],
+            "events": [
+                {
+                    "name": "consoleProfileStarted",
+                    "parameters": [
+                        {
+                            "name": "id",
+                            "type": "string"
+                        },
+                        {
+                            "name": "location",
+                            "$ref": "Debugger.Location",
+                            "description": "Location of console.profile()."
+                        },
+                        {
+                            "name": "title",
+                            "type": "string",
+                            "optional": true,
+                            "description": "Profile title passed as an argument to console.profile()."
+                        }
+                    ],
+                    "description": "Sent when new profile recording is started using console.profile() call."
+                },
+                {
+                    "name": "consoleProfileFinished",
+                    "parameters": [
+                        {
+                            "name": "id",
+                            "type": "string"
+                        },
+                        {
+                            "name": "location",
+                            "$ref": "Debugger.Location",
+                            "description": "Location of console.profileEnd()."
+                        },
+                        {
+                            "name": "profile",
+                            "$ref": "Profile"
+                        },
+                        {
+                            "name": "title",
+                            "type": "string",
+                            "optional": true,
+                            "description": "Profile title passed as an argument to console.profile()."
+                        }
+                    ]
+                }
+            ]
+        },
+        {
+            "domain": "HeapProfiler",
+            "dependencies": [
+                "Runtime"
+            ],
+            "experimental": true,
+            "types": [
+                {
+                    "id": "HeapSnapshotObjectId",
+                    "type": "string",
+                    "description": "Heap snapshot object id."
+                },
+                {
+                    "id": "SamplingHeapProfileNode",
+                    "type": "object",
+                    "description": "Sampling Heap Profile node. Holds callsite information, allocation statistics and child nodes.",
+                    "properties": [
+                        {
+                            "name": "callFrame",
+                            "$ref": "Runtime.CallFrame",
+                            "description": "Function location."
+                        },
+                        {
+                            "name": "selfSize",
+                            "type": "number",
+                            "description": "Allocations size in bytes for the node excluding children."
+                        },
+                        {
+                            "name": "children",
+                            "type": "array",
+                            "items": {
+                                "$ref": "SamplingHeapProfileNode"
+                            },
+                            "description": "Child nodes."
+                        }
+                    ]
+                },
+                {
+                    "id": "SamplingHeapProfile",
+                    "type": "object",
+                    "description": "Profile.",
+                    "properties": [
+                        {
+                            "name": "head",
+                            "$ref": "SamplingHeapProfileNode"
+                        }
+                    ]
+                }
+            ],
+            "commands": [
+                {
+                    "name": "enable"
+                },
+                {
+                    "name": "disable"
+                },
+                {
+                    "name": "startTrackingHeapObjects",
+                    "parameters": [
+                        {
+                            "name": "trackAllocations",
+                            "type": "boolean",
+                            "optional": true
+                        }
+                    ]
+                },
+                {
+                    "name": "stopTrackingHeapObjects",
+                    "parameters": [
+                        {
+                            "name": "reportProgress",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "If true 'reportHeapSnapshotProgress' events will be generated while snapshot is being taken when the tracking is stopped."
+                        }
+                    ]
+                },
+                {
+                    "name": "takeHeapSnapshot",
+                    "parameters": [
+                        {
+                            "name": "reportProgress",
+                            "type": "boolean",
+                            "optional": true,
+                            "description": "If true 'reportHeapSnapshotProgress' events will be generated while snapshot is being taken."
+                        }
+                    ]
+                },
+                {
+                    "name": "collectGarbage"
+                },
+                {
+                    "name": "getObjectByHeapObjectId",
+                    "parameters": [
+                        {
+                            "name": "objectId",
+                            "$ref": "HeapSnapshotObjectId"
+                        },
+                        {
+                            "name": "objectGroup",
+                            "type": "string",
+                            "optional": true,
+                            "description": "Symbolic group name that can be used to release multiple objects."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "result",
+                            "$ref": "Runtime.RemoteObject",
+                            "description": "Evaluation result."
+                        }
+                    ]
+                },
+                {
+                    "name": "addInspectedHeapObject",
+                    "parameters": [
+                        {
+                            "name": "heapObjectId",
+                            "$ref": "HeapSnapshotObjectId",
+                            "description": "Heap snapshot object id to be accessible by means of $x command line API."
+                        }
+                    ],
+                    "description": "Enables console to refer to the node with given id via $x (see Command Line API for more details $x functions)."
+                },
+                {
+                    "name": "getHeapObjectId",
+                    "parameters": [
+                        {
+                            "name": "objectId",
+                            "$ref": "Runtime.RemoteObjectId",
+                            "description": "Identifier of the object to get heap object id for."
+                        }
+                    ],
+                    "returns": [
+                        {
+                            "name": "heapSnapshotObjectId",
+                            "$ref": "HeapSnapshotObjectId",
+                            "description": "Id of the heap snapshot object corresponding to the passed remote object id."
+                        }
+                    ]
+                },
+                {
+                    "name": "startSampling",
+                    "parameters": [
+                        {
+                            "name": "samplingInterval",
+                            "type": "number",
+                            "optional": true,
+                            "description": "Average sample interval in bytes. Poisson distribution is used for the intervals. The default value is 32768 bytes."
+                        }
+                    ]
+                },
+                {
+                    "name": "stopSampling",
+                    "returns": [
+                        {
+                            "name": "profile",
+                            "$ref": "SamplingHeapProfile",
+                            "description": "Recorded sampling heap profile."
+                        }
+                    ]
+                }
+            ],
+            "events": [
+                {
+                    "name": "addHeapSnapshotChunk",
+                    "parameters": [
+                        {
+                            "name": "chunk",
+                            "type": "string"
+                        }
+                    ]
+                },
+                {
+                    "name": "resetProfiles"
+                },
+                {
+                    "name": "reportHeapSnapshotProgress",
+                    "parameters": [
+                        {
+                            "name": "done",
+                            "type": "integer"
+                        },
+                        {
+                            "name": "total",
+                            "type": "integer"
+                        },
+                        {
+                            "name": "finished",
+                            "type": "boolean",
+                            "optional": true
+                        }
+                    ]
+                },
+                {
+                    "name": "lastSeenObjectId",
+                    "description": "If heap objects tracking has been started then backend regularly sends a current value for last seen object id and corresponding timestamp. If the were changes in the heap since last event then one or more heapStatsUpdate events will be sent before a new lastSeenObjectId event.",
+                    "parameters": [
+                        {
+                            "name": "lastSeenObjectId",
+                            "type": "integer"
+                        },
+                        {
+                            "name": "timestamp",
+                            "type": "number"
+                        }
+                    ]
+                },
+                {
+                    "name": "heapStatsUpdate",
+                    "description": "If heap objects tracking has been started then backend may send update for one or more fragments",
+                    "parameters": [
+                        {
+                            "name": "statsUpdate",
+                            "type": "array",
+                            "items": {
+                                "type": "integer"
+                            },
+                            "description": "An array of triplets. Each triplet describes a fragment. The first integer is the fragment index, the second integer is a total count of objects for the fragment, the third integer is a total size of the objects for the fragment."
+                        }
+                    ]
+                }
+            ]
+        }
+    ]
+}
diff --git a/lib/opal/cli_runners/node_modules/chrome-remote-interface/lib/websocket-wrapper.js b/lib/opal/cli_runners/node_modules/chrome-remote-interface/lib/websocket-wrapper.js
new file mode 100644
index 00000000..0e29006c
--- /dev/null
+++ b/lib/opal/cli_runners/node_modules/chrome-remote-interface/lib/websocket-wrapper.js
@@ -0,0 +1,32 @@
+const EventEmitter = require('events');
+
+// wrapper around the Node.js ws module
+// for use in browsers
+class WebSocketWrapper extends EventEmitter {
+    constructor(url) {
+        super();
+        this._ws = new WebSocket(url);
+        this._ws.onopen = () => {
+            this.emit('open');
+        };
+        this._ws.onclose = () => {
+            this.emit('close');
+        };
+        this._ws.onmessage = (event) => {
+            this.emit('message', event.data);
+        };
+        this._ws.onerror = () => {
+            this.emit('error', new Error('WebSocket error'));
+        };
+    }
+
+    close() {
+        this._ws.close();
+    }
+
+    send(data) {
+        this._ws.send(data);
+    }
+}
+
+module.exports = WebSocketWrapper;
diff --git a/lib/opal/cli_runners/node_modules/chrome-remote-interface/package.json b/lib/opal/cli_runners/node_modules/chrome-remote-interface/package.json
new file mode 100644
index 00000000..4d7c880e
--- /dev/null
+++ b/lib/opal/cli_runners/node_modules/chrome-remote-interface/package.json
@@ -0,0 +1,128 @@
+{
+  "_args": [
+    [
+      {
+        "raw": "chrome-remote-interface@latest",
+        "scope": null,
+        "escapedName": "chrome-remote-interface",
+        "name": "chrome-remote-interface",
+        "rawSpec": "latest",
+        "spec": "latest",
+        "type": "tag"
+      },
+      "/Users/ilya/Work/opal/lib/opal/cli_runners"
+    ]
+  ],
+  "_from": "chrome-remote-interface@latest",
+  "_id": "chrome-remote-interface@0.23.3",
+  "_inCache": true,
+  "_location": "/chrome-remote-interface",
+  "_nodeVersion": "8.0.0",
+  "_npmOperationalInternal": {
+    "host": "s3://npm-registry-packages",
+    "tmp": "tmp/chrome-remote-interface-0.23.3.tgz_1498479219316_0.9849931886419654"
+  },
+  "_npmUser": {
+    "name": "cyrus-and",
+    "email": "cyrus.and@gmail.com"
+  },
+  "_npmVersion": "5.0.3",
+  "_phantomChildren": {},
+  "_requested": {
+    "raw": "chrome-remote-interface@latest",
+    "scope": null,
+    "escapedName": "chrome-remote-interface",
+    "name": "chrome-remote-interface",
+    "rawSpec": "latest",
+    "spec": "latest",
+    "type": "tag"
+  },
+  "_requiredBy": [
+    "/"
+  ],
+  "_resolved": "https://registry.npmjs.org/chrome-remote-interface/-/chrome-remote-interface-0.23.3.tgz",
+  "_shasum": "686fcb3f9c1e1abd88ce69b6bb7bc9f6afd85562",
+  "_shrinkwrap": null,
+  "_spec": "chrome-remote-interface@latest",
+  "_where": "/Users/ilya/Work/opal/lib/opal/cli_runners",
+  "author": {
+    "name": "Andrea Cardaci",
+    "email": "cyrus.and@gmail.com"
+  },
+  "bin": {
+    "chrome-remote-interface": "./bin/client.js"
+  },
+  "browser": "chrome-remote-interface.js",
+  "bugs": {
+    "url": "http://github.com/cyrus-and/chrome-remote-interface/issues"
+  },
+  "contributors": [
+    {
+      "name": "Andrey Sidorov",
+      "email": "sidoares@yandex.ru"
+    },
+    {
+      "name": "Greg Cochard",
+      "email": "greg@gregcochard.com"
+    }
+  ],
+  "dependencies": {
+    "commander": "2.1.x",
+    "ws": "2.0.x"
+  },
+  "description": "Chrome Debugging Protocol interface",
+  "devDependencies": {
+    "babel-core": "^6.18.2",
+    "babel-loader": "^6.2.8",
+    "babel-preset-es2015": "^6.18.0",
+    "eslint": "3.12.x",
+    "json-loader": "^0.5.4",
+    "mocha": "3.1.x",
+    "webpack": "^1.13.3"
+  },
+  "directories": {},
+  "dist": {
+    "integrity": "sha512-Bj3zMOEqJNVOll/5LrtvSdpbXSsCiSdnSQPmKUQDmAofahHczR3Qp5VJaAKrhNC/nlv9jj74aYzxTUPKrez8rA==",
+    "shasum": "686fcb3f9c1e1abd88ce69b6bb7bc9f6afd85562",
+    "tarball": "https://registry.npmjs.org/chrome-remote-interface/-/chrome-remote-interface-0.23.3.tgz"
+  },
+  "engines": {
+    "node": ">=4"
+  },
+  "files": [
+    "lib",
+    "bin",
+    "index.js",
+    "chrome-remote-interface.js",
+    "webpack.config.js"
+  ],
+  "gitHead": "46f25c102fca52315dfba15c349265a4cb126cd1",
+  "homepage": "https://github.com/cyrus-and/chrome-remote-interface",
+  "keywords": [
+    "chrome",
+    "debug",
+    "protocol",
+    "remote",
+    "interface"
+  ],
+  "license": "MIT",
+  "maintainers": [
+    {
+      "name": "cyrus-and",
+      "email": "cyrus.and@gmail.com"
+    }
+  ],
+  "name": "chrome-remote-interface",
+  "optionalDependencies": {},
+  "readme": "ERROR: No README data found!",
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/cyrus-and/chrome-remote-interface.git"
+  },
+  "scripts": {
+    "prepublish": "webpack",
+    "test": "./scripts/run-tests.sh",
+    "webpack": "webpack"
+  },
+  "version": "0.23.3"
+}
diff --git a/lib/opal/cli_runners/node_modules/chrome-remote-interface/webpack.config.js b/lib/opal/cli_runners/node_modules/chrome-remote-interface/webpack.config.js
new file mode 100644
index 00000000..baf36229
--- /dev/null
+++ b/lib/opal/cli_runners/node_modules/chrome-remote-interface/webpack.config.js
@@ -0,0 +1,55 @@
+'use strict';
+
+const webpack = require('webpack');
+
+function criWrapper(_, options, callback) {
+    window.criRequest(options, callback);
+}
+
+const webpackConfig = {
+    resolve: {
+        alias: {
+            'ws': './websocket-wrapper.js'
+        }
+    },
+    externals: [
+        {
+            './external-request.js': `var (${criWrapper})`
+        }
+    ],
+    module: {
+        loaders: [
+            {
+                test: /\.js$/,
+                exclude: /node_modules/,
+                loader: 'babel-loader'
+            },
+            {
+                test: /\.json$/,
+                loader: 'json'
+            }
+        ]
+    },
+    plugins: [
+    ],
+    entry: './index.js',
+    output: {
+        libraryTarget: process.env.TARGET || 'commonjs2',
+        library: 'CDP',
+        filename: 'chrome-remote-interface.js'
+    }
+};
+
+if (process.env.DEBUG !== 'true') {
+    webpackConfig.plugins.push(new webpack.optimize.UglifyJsPlugin({
+        mangle: true,
+        compress: {
+            warnings: false
+        },
+        output: {
+            comments: false
+        }
+    }));
+}
+
+module.exports = webpackConfig;
diff --git a/lib/opal/cli_runners/node_modules/commander/Readme.md b/lib/opal/cli_runners/node_modules/commander/Readme.md
new file mode 100644
index 00000000..d1644012
--- /dev/null
+++ b/lib/opal/cli_runners/node_modules/commander/Readme.md
@@ -0,0 +1,195 @@
+# Commander.js
+
+  The complete solution for [node.js](http://nodejs.org) command-line interfaces, inspired by Ruby's [commander](https://github.com/visionmedia/commander).
+
+ [![Build Status](https://secure.travis-ci.org/visionmedia/commander.js.png)](http://travis-ci.org/visionmedia/commander.js)
+
+## Installation
+
+    $ npm install commander
+
+## Option parsing
+
+ Options with commander are defined with the `.option()` method, also serving as documentation for the options. The example below parses args and options from `process.argv`, leaving remaining args as the `program.args` array which were not consumed by options.
+
+```js
+#!/usr/bin/env node
+
+/**
+ * Module dependencies.
+ */
+
+var program = require('commander');
+
+program
+  .version('0.0.1')
+  .option('-p, --peppers', 'Add peppers')
+  .option('-P, --pineapple', 'Add pineapple')
+  .option('-b, --bbq', 'Add bbq sauce')
+  .option('-c, --cheese [type]', 'Add the specified type of cheese [marble]', 'marble')
+  .parse(process.argv);
+
+console.log('you ordered a pizza with:');
+if (program.peppers) console.log('  - peppers');
+if (program.pineapple) console.log('  - pineapple');
+if (program.bbq) console.log('  - bbq');
+console.log('  - %s cheese', program.cheese);
+```
+
+ Short flags may be passed as a single arg, for example `-abc` is equivalent to `-a -b -c`. Multi-word options such as "--template-engine" are camel-cased, becoming `program.templateEngine` etc.
+
+## Automated --help
+
+ The help information is auto-generated based on the information commander already knows about your program, so the following `--help` info is for free:
+
+```  
+ $ ./examples/pizza --help
+
+   Usage: pizza [options]
+
+   Options:
+
+     -V, --version        output the version number
+     -p, --peppers        Add peppers
+     -P, --pineapple      Add pineapple
+     -b, --bbq            Add bbq sauce
+     -c, --cheese <type>  Add the specified type of cheese [marble]
+     -h, --help           output usage information
+
+```
+
+## Coercion
+
+```js
+function range(val) {
+  return val.split('..').map(Number);
+}
+
+function list(val) {
+  return val.split(',');
+}
+
+program
+  .version('0.0.1')
+  .usage('[options] <file ...>')
+  .option('-i, --integer <n>', 'An integer argument', parseInt)
+  .option('-f, --float <n>', 'A float argument', parseFloat)
+  .option('-r, --range <a>..<b>', 'A range', range)
+  .option('-l, --list <items>', 'A list', list)
+  .option('-o, --optional [value]', 'An optional value')
+  .parse(process.argv);
+
+console.log(' int: %j', program.integer);
+console.log(' float: %j', program.float);
+console.log(' optional: %j', program.optional);
+program.range = program.range || [];
+console.log(' range: %j..%j', program.range[0], program.range[1]);
+console.log(' list: %j', program.list);
+console.log(' args: %j', program.args);
+```
+
+## Custom help
+
+ You can display arbitrary `-h, --help` information
+ by listening for "--help". Commander will automatically
+ exit once you are done so that the remainder of your program
+ does not execute causing undesired behaviours, for example
+ in the following executable "stuff" will not output when
+ `--help` is used.
+
+```js
+#!/usr/bin/env node
+
+/**
+ * Module dependencies.
+ */
+
+var program = require('../');
+
+function list(val) {
+  return val.split(',').map(Number);
+}
+
+program
+  .version('0.0.1')
+  .option('-f, --foo', 'enable some foo')
+  .option('-b, --bar', 'enable some bar')
+  .option('-B, --baz', 'enable some baz');
+
+// must be before .parse() since
+// node's emit() is immediate
+
+program.on('--help', function(){
+  console.log('  Examples:');
+  console.log('');
+  console.log('    $ custom-help --help');
+  console.log('    $ custom-help -h');
+  console.log('');
+});
+
+program.parse(process.argv);
+
+console.log('stuff');
+```
+
+yielding the following help output:
+
+```
+
+Usage: custom-help [options]
+
+Options:
+
+  -h, --help     output usage information
+  -V, --version  output the version number
+  -f, --foo      enable some foo
+  -b, --bar      enable some bar
+  -B, --baz      enable some baz
+
+Examples:
+
+  $ custom-help --help
+  $ custom-help -h
+
+```
+
+## .outputHelp()
+
+  Output help information without exiting.
+
+## .help()
+
+  Output help information and exit immediately.
+
+## Links
+
+ - [API documentation](http://visionmedia.github.com/commander.js/)
+ - [ascii tables](https://github.com/LearnBoost/cli-table)
+ - [progress bars](https://github.com/visionmedia/node-progress)
+ - [more progress bars](https://github.com/substack/node-multimeter)
+ - [examples](https://github.com/visionmedia/commander.js/tree/master/examples)
+
+## License 
+
+(The MIT License)
+
+Copyright (c) 2011 TJ Holowaychuk &lt;tj@vision-media.ca&gt;
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+'Software'), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/lib/opal/cli_runners/node_modules/commander/index.js b/lib/opal/cli_runners/node_modules/commander/index.js
new file mode 100644
index 00000000..790a7519
--- /dev/null
+++ b/lib/opal/cli_runners/node_modules/commander/index.js
@@ -0,0 +1,851 @@
+
+/**
+ * Module dependencies.
+ */
+
+var EventEmitter = require('events').EventEmitter;
+var spawn = require('child_process').spawn;
+var fs = require('fs');
+var exists = fs.existsSync;
+var path = require('path');
+var dirname = path.dirname;
+var basename = path.basename;
+
+/**
+ * Expose the root command.
+ */
+
+exports = module.exports = new Command;
+
+/**
+ * Expose `Command`.
+ */
+
+exports.Command = Command;
+
+/**
+ * Expose `Option`.
+ */
+
+exports.Option = Option;
+
+/**
+ * Initialize a new `Option` with the given `flags` and `description`.
+ *
+ * @param {String} flags
+ * @param {String} description
+ * @api public
+ */
+
+function Option(flags, description) {
+  this.flags = flags;
+  this.required = ~flags.indexOf('<');
+  this.optional = ~flags.indexOf('[');
+  this.bool = !~flags.indexOf('-no-');
+  flags = flags.split(/[ ,|]+/);
+  if (flags.length > 1 && !/^[[<]/.test(flags[1])) this.short = flags.shift();
+  this.long = flags.shift();
+  this.description = description || '';
+}
+
+/**
+ * Return option name.
+ *
+ * @return {String}
+ * @api private
+ */
+
+Option.prototype.name = function(){
+  return this.long
+    .replace('--', '')
+    .replace('no-', '');
+};
+
+/**
+ * Check if `arg` matches the short or long flag.
+ *
+ * @param {String} arg
+ * @return {Boolean}
+ * @api private
+ */
+
+Option.prototype.is = function(arg){
+  return arg == this.short
+    || arg == this.long;
+};
+
+/**
+ * Initialize a new `Command`.
+ *
+ * @param {String} name
+ * @api public
+ */
+
+function Command(name) {
+  this.commands = [];
+  this.options = [];
+  this._execs = [];
+  this._args = [];
+  this._name = name;
+}
+
+/**
+ * Inherit from `EventEmitter.prototype`.
+ */
+
+Command.prototype.__proto__ = EventEmitter.prototype;
+
+/**
+ * Add command `name`.
+ *
+ * The `.action()` callback is invoked when the
+ * command `name` is specified via __ARGV__,
+ * and the remaining arguments are applied to the
+ * function for access.
+ *
+ * When the `name` is "*" an un-matched command
+ * will be passed as the first arg, followed by
+ * the rest of __ARGV__ remaining.
+ *
+ * Examples:
+ *
+ *      program
+ *        .version('0.0.1')
+ *        .option('-C, --chdir <path>', 'change the working directory')
+ *        .option('-c, --config <path>', 'set config path. defaults to ./deploy.conf')
+ *        .option('-T, --no-tests', 'ignore test hook')
+ *     
+ *      program
+ *        .command('setup')
+ *        .description('run remote setup commands')
+ *        .action(function(){
+ *          console.log('setup');
+ *        });
+ *     
+ *      program
+ *        .command('exec <cmd>')
+ *        .description('run the given remote command')
+ *        .action(function(cmd){
+ *          console.log('exec "%s"', cmd);
+ *        });
+ *     
+ *      program
+ *        .command('*')
+ *        .description('deploy the given env')
+ *        .action(function(env){
+ *          console.log('deploying "%s"', env);
+ *        });
+ *     
+ *      program.parse(process.argv);
+  *
+ * @param {String} name
+ * @param {String} [desc]
+ * @return {Command} the new command
+ * @api public
+ */
+
+Command.prototype.command = function(name, desc){
+  var args = name.split(/ +/);
+  var cmd = new Command(args.shift());
+  if (desc) cmd.description(desc);
+  if (desc) this.executables = true;
+  if (desc) this._execs[cmd._name] = true;
+  this.commands.push(cmd);
+  cmd.parseExpectedArgs(args);
+  cmd.parent = this;
+  if (desc) return this;
+  return cmd;
+};
+
+/**
+ * Add an implicit `help [cmd]` subcommand
+ * which invokes `--help` for the given command.
+ *
+ * @api private
+ */
+
+Command.prototype.addImplicitHelpCommand = function() {
+  this.command('help [cmd]', 'display help for [cmd]');
+};
+
+/**
+ * Parse expected `args`.
+ *
+ * For example `["[type]"]` becomes `[{ required: false, name: 'type' }]`.
+ *
+ * @param {Array} args
+ * @return {Command} for chaining
+ * @api public
+ */
+
+Command.prototype.parseExpectedArgs = function(args){
+  if (!args.length) return;
+  var self = this;
+  args.forEach(function(arg){
+    switch (arg[0]) {
+      case '<':
+        self._args.push({ required: true, name: arg.slice(1, -1) });
+        break;
+      case '[':
+        self._args.push({ required: false, name: arg.slice(1, -1) });
+        break;
+    }
+  });
+  return this;
+};
+
+/**
+ * Register callback `fn` for the command.
+ *
+ * Examples:
+ *
+ *      program
+ *        .command('help')
+ *        .description('display verbose help')
+ *        .action(function(){
+ *           // output help here
+ *        });
+ *
+ * @param {Function} fn
+ * @return {Command} for chaining
+ * @api public
+ */
+
+Command.prototype.action = function(fn){
+  var self = this;
+  this.parent.on(this._name, function(args, unknown){    
+    // Parse any so-far unknown options
+    unknown = unknown || [];
+    var parsed = self.parseOptions(unknown);
+    
+    // Output help if necessary
+    outputHelpIfNecessary(self, parsed.unknown);
+    
+    // If there are still any unknown options, then we simply 
+    // die, unless someone asked for help, in which case we give it
+    // to them, and then we die.
+    if (parsed.unknown.length > 0) {      
+      self.unknownOption(parsed.unknown[0]);
+    }
+    
+    // Leftover arguments need to be pushed back. Fixes issue #56
+    if (parsed.args.length) args = parsed.args.concat(args);
+    
+    self._args.forEach(function(arg, i){
+      if (arg.required && null == args[i]) {
+        self.missingArgument(arg.name);
+      }
+    });
+    
+    // Always append ourselves to the end of the arguments,
+    // to make sure we match the number of arguments the user
+    // expects
+    if (self._args.length) {
+      args[self._args.length] = self;
+    } else {
+      args.push(self);
+    }
+    
+    fn.apply(this, args);
+  });
+  return this;
+};
+
+/**
+ * Define option with `flags`, `description` and optional
+ * coercion `fn`. 
+ *
+ * The `flags` string should contain both the short and long flags,
+ * separated by comma, a pipe or space. The following are all valid
+ * all will output this way when `--help` is used.
+ *
+ *    "-p, --pepper"
+ *    "-p|--pepper"
+ *    "-p --pepper"
+ *
+ * Examples:
+ *
+ *     // simple boolean defaulting to false
+ *     program.option('-p, --pepper', 'add pepper');
+ *
+ *     --pepper
+ *     program.pepper
+ *     // => Boolean
+ *
+ *     // simple boolean defaulting to false
+ *     program.option('-C, --no-cheese', 'remove cheese');
+ *
+ *     program.cheese
+ *     // => true
+ *
+ *     --no-cheese
+ *     program.cheese
+ *     // => true
+ *
+ *     // required argument
+ *     program.option('-C, --chdir <path>', 'change the working directory');
+ *
+ *     --chdir /tmp
+ *     program.chdir
+ *     // => "/tmp"
+ *
+ *     // optional argument
+ *     program.option('-c, --cheese [type]', 'add cheese [marble]');
+ *
+ * @param {String} flags
+ * @param {String} description
+ * @param {Function|Mixed} fn or default
+ * @param {Mixed} defaultValue
+ * @return {Command} for chaining
+ * @api public
+ */
+
+Command.prototype.option = function(flags, description, fn, defaultValue){
+  var self = this
+    , option = new Option(flags, description)
+    , oname = option.name()
+    , name = camelcase(oname);
+
+  // default as 3rd arg
+  if ('function' != typeof fn) defaultValue = fn, fn = null;
+
+  // preassign default value only for --no-*, [optional], or <required>
+  if (false == option.bool || option.optional || option.required) {
+    // when --no-* we make sure default is true
+    if (false == option.bool) defaultValue = true;
+    // preassign only if we have a default
+    if (undefined !== defaultValue) self[name] = defaultValue;
+  }
+
+  // register the option
+  this.options.push(option);
+
+  // when it's passed assign the value
+  // and conditionally invoke the callback
+  this.on(oname, function(val){
+    // coercion
+    if (null != val && fn) val = fn(val);
+
+    // unassigned or bool
+    if ('boolean' == typeof self[name] || 'undefined' == typeof self[name]) {
+      // if no value, bool true, and we have a default, then use it!
+      if (null == val) {
+        self[name] = option.bool
+          ? defaultValue || true
+          : false;
+      } else {
+        self[name] = val;
+      }
+    } else if (null !== val) {
+      // reassign
+      self[name] = val;
+    }
+  });
+
+  return this;
+};
+
+/**
+ * Parse `argv`, settings options and invoking commands when defined.
+ *
+ * @param {Array} argv
+ * @return {Command} for chaining
+ * @api public
+ */
+
+Command.prototype.parse = function(argv){
+  // implicit help
+  if (this.executables) this.addImplicitHelpCommand();
+
+  // store raw args
+  this.rawArgs = argv;
+
+  // guess name
+  this._name = this._name || basename(argv[1]);
+
+  // process argv
+  var parsed = this.parseOptions(this.normalize(argv.slice(2)));
+  var args = this.args = parsed.args;
+ 
+  var result = this.parseArgs(this.args, parsed.unknown);
+
+  // executable sub-commands
+  var name = result.args[0];
+  if (this._execs[name]) return this.executeSubCommand(argv, args, parsed.unknown);
+
+  return result;
+};
+
+/**
+ * Execute a sub-command executable.
+ *
+ * @param {Array} argv
+ * @param {Array} args
+ * @param {Array} unknown
+ * @api private
+ */
+
+Command.prototype.executeSubCommand = function(argv, args, unknown) {
+  args = args.concat(unknown);
+
+  if (!args.length) this.help();
+  if ('help' == args[0] && 1 == args.length) this.help();
+
+  // <cmd> --help
+  if ('help' == args[0]) {
+    args[0] = args[1];
+    args[1] = '--help';
+  }
+
+  // executable
+  var dir = dirname(argv[1]);
+  var bin = basename(argv[1]) + '-' + args[0];
+
+  // check for ./<bin> first
+  var local = path.join(dir, bin);
+
+  // run it
+  args = args.slice(1);
+  var proc = spawn(local, args, { stdio: 'inherit', customFds: [0, 1, 2] });
+  proc.on('error', function(err){
+    if (err.code == "ENOENT") {
+      console.error('\n  %s(1) does not exist, try --help\n', bin);
+    } else if (err.code == "EACCES") {
+      console.error('\n  %s(1) not executable. try chmod or run with root\n', bin);
+    }
+  });
+
+  this.runningCommand = proc;
+};
+
+/**
+ * Normalize `args`, splitting joined short flags. For example
+ * the arg "-abc" is equivalent to "-a -b -c".
+ * This also normalizes equal sign and splits "--abc=def" into "--abc def".
+ *
+ * @param {Array} args
+ * @return {Array}
+ * @api private
+ */
+
+Command.prototype.normalize = function(args){
+  var ret = []
+    , arg
+    , lastOpt
+    , index;
+
+  for (var i = 0, len = args.length; i < len; ++i) {
+    arg = args[i];
+    i > 0 && (lastOpt = this.optionFor(args[i-1]));
+    
+    if (lastOpt && lastOpt.required) {
+     	ret.push(arg);
+    } else if (arg.length > 1 && '-' == arg[0] && '-' != arg[1]) {
+      arg.slice(1).split('').forEach(function(c){
+        ret.push('-' + c);
+      });
+    } else if (/^--/.test(arg) && ~(index = arg.indexOf('='))) {
+      ret.push(arg.slice(0, index), arg.slice(index + 1));
+    } else {
+      ret.push(arg);
+    }
+  }
+
+  return ret;
+};
+
+/**
+ * Parse command `args`.
+ *
+ * When listener(s) are available those
+ * callbacks are invoked, otherwise the "*"
+ * event is emitted and those actions are invoked.
+ *
+ * @param {Array} args
+ * @return {Command} for chaining
+ * @api private
+ */
+
+Command.prototype.parseArgs = function(args, unknown){
+  var cmds = this.commands
+    , len = cmds.length
+    , name;
+
+  if (args.length) {
+    name = args[0];
+    if (this.listeners(name).length) {
+      this.emit(args.shift(), args, unknown);
+    } else {
+      this.emit('*', args);
+    }
+  } else {
+    outputHelpIfNecessary(this, unknown);
+    
+    // If there were no args and we have unknown options,
+    // then they are extraneous and we need to error.
+    if (unknown.length > 0) {      
+      this.unknownOption(unknown[0]);
+    }
+  }
+
+  return this;
+};
+
+/**
+ * Return an option matching `arg` if any.
+ *
+ * @param {String} arg
+ * @return {Option}
+ * @api private
+ */
+
+Command.prototype.optionFor = function(arg){
+  for (var i = 0, len = this.options.length; i < len; ++i) {
+    if (this.options[i].is(arg)) {
+      return this.options[i];
+    }
+  }
+};
+
+/**
+ * Parse options from `argv` returning `argv`
+ * void of these options.
+ *
+ * @param {Array} argv
+ * @return {Array}
+ * @api public
+ */
+
+Command.prototype.parseOptions = function(argv){
+  var args = []
+    , len = argv.length
+    , literal
+    , option
+    , arg;
+
+  var unknownOptions = [];
+
+  // parse options
+  for (var i = 0; i < len; ++i) {
+    arg = argv[i];
+
+    // literal args after --
+    if ('--' == arg) {
+      literal = true;
+      continue;
+    }
+
+    if (literal) {
+      args.push(arg);
+      continue;
+    }
+
+    // find matching Option
+    option = this.optionFor(arg);
+
+    // option is defined
+    if (option) {
+      // requires arg
+      if (option.required) {
+        arg = argv[++i];
+        if (null == arg) return this.optionMissingArgument(option);
+        this.emit(option.name(), arg);
+      // optional arg
+      } else if (option.optional) {
+        arg = argv[i+1];
+        if (null == arg || ('-' == arg[0] && '-' != arg)) {
+          arg = null;
+        } else {
+          ++i;
+        }
+        this.emit(option.name(), arg);
+      // bool
+      } else {
+        this.emit(option.name());
+      }
+      continue;
+    }
+    
+    // looks like an option
+    if (arg.length > 1 && '-' == arg[0]) {
+      unknownOptions.push(arg);
+      
+      // If the next argument looks like it might be
+      // an argument for this option, we pass it on.
+      // If it isn't, then it'll simply be ignored
+      if (argv[i+1] && '-' != argv[i+1][0]) {
+        unknownOptions.push(argv[++i]);
+      }
+      continue;
+    }
+    
+    // arg
+    args.push(arg);
+  }
+  
+  return { args: args, unknown: unknownOptions };
+};
+
+/**
+ * Argument `name` is missing.
+ *
+ * @param {String} name
+ * @api private
+ */
+
+Command.prototype.missingArgument = function(name){
+  console.error();
+  console.error("  error: missing required argument `%s'", name);
+  console.error();
+  process.exit(1);
+};
+
+/**
+ * `Option` is missing an argument, but received `flag` or nothing.
+ *
+ * @param {String} option
+ * @param {String} flag
+ * @api private
+ */
+
+Command.prototype.optionMissingArgument = function(option, flag){
+  console.error();
+  if (flag) {
+    console.error("  error: option `%s' argument missing, got `%s'", option.flags, flag);
+  } else {
+    console.error("  error: option `%s' argument missing", option.flags);
+  }
+  console.error();
+  process.exit(1);
+};
+
+/**
+ * Unknown option `flag`.
+ *
+ * @param {String} flag
+ * @api private
+ */
+
+Command.prototype.unknownOption = function(flag){
+  console.error();
+  console.error("  error: unknown option `%s'", flag);
+  console.error();
+  process.exit(1);
+};
+
+
+/**
+ * Set the program version to `str`.
+ *
+ * This method auto-registers the "-V, --version" flag
+ * which will print the version number when passed.
+ *
+ * @param {String} str
+ * @param {String} flags
+ * @return {Command} for chaining
+ * @api public
+ */
+
+Command.prototype.version = function(str, flags){
+  if (0 == arguments.length) return this._version;
+  this._version = str;
+  flags = flags || '-V, --version';
+  this.option(flags, 'output the version number');
+  this.on('version', function(){
+    console.log(str);
+    process.exit(0);
+  });
+  return this;
+};
+
+/**
+ * Set the description `str`.
+ *
+ * @param {String} str
+ * @return {String|Command}
+ * @api public
+ */
+
+Command.prototype.description = function(str){
+  if (0 == arguments.length) return this._description;
+  this._description = str;
+  return this;
+};
+
+/**
+ * Set / get the command usage `str`.
+ *
+ * @param {String} str
+ * @return {String|Command}
+ * @api public
+ */
+
+Command.prototype.usage = function(str){
+  var args = this._args.map(function(arg){
+    return arg.required
+      ? '<' + arg.name + '>'
+      : '[' + arg.name + ']';
+  });
+
+  var usage = '[options'
+    + (this.commands.length ? '] [command' : '')
+    + ']'
+    + (this._args.length ? ' ' + args : '');
+
+  if (0 == arguments.length) return this._usage || usage;
+  this._usage = str;
+
+  return this;
+};
+
+/**
+ * Return the largest option length.
+ *
+ * @return {Number}
+ * @api private
+ */
+
+Command.prototype.largestOptionLength = function(){
+  return this.options.reduce(function(max, option){
+    return Math.max(max, option.flags.length);
+  }, 0);
+};
+
+/**
+ * Return help for options.
+ *
+ * @return {String}
+ * @api private
+ */
+
+Command.prototype.optionHelp = function(){
+  var width = this.largestOptionLength();
+  
+  // Prepend the help information
+  return [pad('-h, --help', width) + '  ' + 'output usage information']
+    .concat(this.options.map(function(option){
+      return pad(option.flags, width)
+        + '  ' + option.description;
+      }))
+    .join('\n');
+};
+
+/**
+ * Return command help documentation.
+ *
+ * @return {String}
+ * @api private
+ */
+
+Command.prototype.commandHelp = function(){
+  if (!this.commands.length) return '';
+  return [
+      ''
+    , '  Commands:'
+    , ''
+    , this.commands.map(function(cmd){
+      var args = cmd._args.map(function(arg){
+        return arg.required
+          ? '<' + arg.name + '>'
+          : '[' + arg.name + ']';
+      }).join(' ');
+
+      return pad(cmd._name
+        + (cmd.options.length 
+          ? ' [options]'
+          : '') + ' ' + args, 22)
+        + (cmd.description()
+          ? ' ' + cmd.description()
+          : '');
+    }).join('\n').replace(/^/gm, '    ')
+    , ''
+  ].join('\n');
+};
+
+/**
+ * Return program help documentation.
+ *
+ * @return {String}
+ * @api private
+ */
+
+Command.prototype.helpInformation = function(){
+  return [
+      ''
+    , '  Usage: ' + this._name + ' ' + this.usage()
+    , '' + this.commandHelp()
+    , '  Options:'
+    , ''
+    , '' + this.optionHelp().replace(/^/gm, '    ')
+    , ''
+    , ''
+  ].join('\n');
+};
+
+/**
+ * Output help information for this command
+ *
+ * @api public
+ */
+
+Command.prototype.outputHelp = function(){
+  process.stdout.write(this.helpInformation());
+  this.emit('--help');
+};
+
+/**
+ * Output help information and exit.
+ *
+ * @api public
+ */
+
+Command.prototype.help = function(){
+  this.outputHelp();
+  process.exit();
+};
+
+/**
+ * Camel-case the given `flag`
+ *
+ * @param {String} flag
+ * @return {String}
+ * @api private
+ */
+
+function camelcase(flag) {
+  return flag.split('-').reduce(function(str, word){
+    return str + word[0].toUpperCase() + word.slice(1);
+  });
+}
+
+/**
+ * Pad `str` to `width`.
+ *
+ * @param {String} str
+ * @param {Number} width
+ * @return {String}
+ * @api private
+ */
+
+function pad(str, width) {
+  var len = Math.max(0, width - str.length);
+  return str + Array(len + 1).join(' ');
+}
+
+/**
+ * Output help information if necessary
+ *
+ * @param {Command} command to output help for
+ * @param {Array} array of options to search for -h or --help
+ * @api private
+ */
+
+function outputHelpIfNecessary(cmd, options) {
+  options = options || [];
+  for (var i = 0; i < options.length; i++) {
+    if (options[i] == '--help' || options[i] == '-h') {
+      cmd.outputHelp();
+      process.exit(0);
+    }
+  }
+}
diff --git a/lib/opal/cli_runners/node_modules/commander/package.json b/lib/opal/cli_runners/node_modules/commander/package.json
new file mode 100644
index 00000000..db5a55d4
--- /dev/null
+++ b/lib/opal/cli_runners/node_modules/commander/package.json
@@ -0,0 +1,92 @@
+{
+  "_args": [
+    [
+      {
+        "raw": "commander@2.1.x",
+        "scope": null,
+        "escapedName": "commander",
+        "name": "commander",
+        "rawSpec": "2.1.x",
+        "spec": ">=2.1.0 <2.2.0",
+        "type": "range"
+      },
+      "/Users/ilya/Work/opal/lib/opal/cli_runners/node_modules/chrome-remote-interface"
+    ]
+  ],
+  "_from": "commander@>=2.1.0 <2.2.0",
+  "_id": "commander@2.1.0",
+  "_inCache": true,
+  "_location": "/commander",
+  "_npmUser": {
+    "name": "tjholowaychuk",
+    "email": "tj@vision-media.ca"
+  },
+  "_npmVersion": "1.3.14",
+  "_phantomChildren": {},
+  "_requested": {
+    "raw": "commander@2.1.x",
+    "scope": null,
+    "escapedName": "commander",
+    "name": "commander",
+    "rawSpec": "2.1.x",
+    "spec": ">=2.1.0 <2.2.0",
+    "type": "range"
+  },
+  "_requiredBy": [
+    "/chrome-remote-interface"
+  ],
+  "_resolved": "https://registry.npmjs.org/commander/-/commander-2.1.0.tgz",
+  "_shasum": "d121bbae860d9992a3d517ba96f56588e47c6781",
+  "_shrinkwrap": null,
+  "_spec": "commander@2.1.x",
+  "_where": "/Users/ilya/Work/opal/lib/opal/cli_runners/node_modules/chrome-remote-interface",
+  "author": {
+    "name": "TJ Holowaychuk",
+    "email": "tj@vision-media.ca"
+  },
+  "bugs": {
+    "url": "https://github.com/visionmedia/commander.js/issues"
+  },
+  "dependencies": {},
+  "description": "the complete solution for node.js command-line programs",
+  "devDependencies": {
+    "should": ">= 0.0.1"
+  },
+  "directories": {},
+  "dist": {
+    "shasum": "d121bbae860d9992a3d517ba96f56588e47c6781",
+    "tarball": "https://registry.npmjs.org/commander/-/commander-2.1.0.tgz"
+  },
+  "engines": {
+    "node": ">= 0.6.x"
+  },
+  "files": [
+    "index.js"
+  ],
+  "homepage": "https://github.com/visionmedia/commander.js",
+  "keywords": [
+    "command",
+    "option",
+    "parser",
+    "prompt",
+    "stdin"
+  ],
+  "main": "index",
+  "maintainers": [
+    {
+      "name": "tjholowaychuk",
+      "email": "tj@vision-media.ca"
+    }
+  ],
+  "name": "commander",
+  "optionalDependencies": {},
+  "readme": "ERROR: No README data found!",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/visionmedia/commander.js.git"
+  },
+  "scripts": {
+    "test": "make test"
+  },
+  "version": "2.1.0"
+}
diff --git a/lib/opal/cli_runners/node_modules/ultron/LICENSE b/lib/opal/cli_runners/node_modules/ultron/LICENSE
new file mode 100644
index 00000000..6dc9316a
--- /dev/null
+++ b/lib/opal/cli_runners/node_modules/ultron/LICENSE
@@ -0,0 +1,22 @@
+The MIT License (MIT)
+
+Copyright (c) 2015 Unshift.io, Arnout Kazemier,  the Contributors.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
diff --git a/lib/opal/cli_runners/node_modules/ultron/index.js b/lib/opal/cli_runners/node_modules/ultron/index.js
new file mode 100644
index 00000000..9e0677aa
--- /dev/null
+++ b/lib/opal/cli_runners/node_modules/ultron/index.js
@@ -0,0 +1,138 @@
+'use strict';
+
+var has = Object.prototype.hasOwnProperty;
+
+/**
+ * An auto incrementing id which we can use to create "unique" Ultron instances
+ * so we can track the event emitters that are added through the Ultron
+ * interface.
+ *
+ * @type {Number}
+ * @private
+ */
+var id = 0;
+
+/**
+ * Ultron is high-intelligence robot. It gathers intelligence so it can start improving
+ * upon his rudimentary design. It will learn from your EventEmitting patterns
+ * and exterminate them.
+ *
+ * @constructor
+ * @param {EventEmitter} ee EventEmitter instance we need to wrap.
+ * @api public
+ */
+function Ultron(ee) {
+  if (!(this instanceof Ultron)) return new Ultron(ee);
+
+  this.id = id++;
+  this.ee = ee;
+}
+
+/**
+ * Register a new EventListener for the given event.
+ *
+ * @param {String} event Name of the event.
+ * @param {Functon} fn Callback function.
+ * @param {Mixed} context The context of the function.
+ * @returns {Ultron}
+ * @api public
+ */
+Ultron.prototype.on = function on(event, fn, context) {
+  fn.__ultron = this.id;
+  this.ee.on(event, fn, context);
+
+  return this;
+};
+/**
+ * Add an EventListener that's only called once.
+ *
+ * @param {String} event Name of the event.
+ * @param {Function} fn Callback function.
+ * @param {Mixed} context The context of the function.
+ * @returns {Ultron}
+ * @api public
+ */
+Ultron.prototype.once = function once(event, fn, context) {
+  fn.__ultron = this.id;
+  this.ee.once(event, fn, context);
+
+  return this;
+};
+
+/**
+ * Remove the listeners we assigned for the given event.
+ *
+ * @returns {Ultron}
+ * @api public
+ */
+Ultron.prototype.remove = function remove() {
+  var args = arguments
+    , ee = this.ee
+    , event;
+
+  //
+  // When no event names are provided we assume that we need to clear all the
+  // events that were assigned through us.
+  //
+  if (args.length === 1 && 'string' === typeof args[0]) {
+    args = args[0].split(/[, ]+/);
+  } else if (!args.length) {
+    if (ee.eventNames) {
+      args = ee.eventNames();
+    } else if (ee._events) {
+      args = [];
+
+      for (event in ee._events) {
+        if (has.call(ee._events, event)) args.push(event);
+      }
+
+      if (Object.getOwnPropertySymbols) {
+        args = args.concat(Object.getOwnPropertySymbols(ee._events));
+      }
+    }
+  }
+
+  for (var i = 0; i < args.length; i++) {
+    var listeners = ee.listeners(args[i]);
+
+    for (var j = 0; j < listeners.length; j++) {
+      event = listeners[j];
+
+      //
+      // Once listeners have a `listener` property that stores the real listener
+      // in the EventEmitter that ships with Node.js.
+      //
+      if (event.listener) {
+        if (event.listener.__ultron !== this.id) continue;
+        delete event.listener.__ultron;
+      } else {
+        if (event.__ultron !== this.id) continue;
+        delete event.__ultron;
+      }
+
+      ee.removeListener(args[i], event);
+    }
+  }
+
+  return this;
+};
+
+/**
+ * Destroy the Ultron instance, remove all listeners and release all references.
+ *
+ * @returns {Boolean}
+ * @api public
+ */
+Ultron.prototype.destroy = function destroy() {
+  if (!this.ee) return false;
+
+  this.remove();
+  this.ee = null;
+
+  return true;
+};
+
+//
+// Expose the module.
+//
+module.exports = Ultron;
diff --git a/lib/opal/cli_runners/node_modules/ultron/package.json b/lib/opal/cli_runners/node_modules/ultron/package.json
new file mode 100644
index 00000000..82e53f26
--- /dev/null
+++ b/lib/opal/cli_runners/node_modules/ultron/package.json
@@ -0,0 +1,112 @@
+{
+  "_args": [
+    [
+      {
+        "raw": "ultron@~1.1.0",
+        "scope": null,
+        "escapedName": "ultron",
+        "name": "ultron",
+        "rawSpec": "~1.1.0",
+        "spec": ">=1.1.0 <1.2.0",
+        "type": "range"
+      },
+      "/Users/ilya/Work/opal/lib/opal/cli_runners/node_modules/ws"
+    ]
+  ],
+  "_from": "ultron@>=1.1.0 <1.2.0",
+  "_id": "ultron@1.1.0",
+  "_inCache": true,
+  "_location": "/ultron",
+  "_nodeVersion": "6.2.1",
+  "_npmOperationalInternal": {
+    "host": "packages-12-west.internal.npmjs.com",
+    "tmp": "tmp/ultron-1.1.0.tgz_1483969751660_0.8877595944795758"
+  },
+  "_npmUser": {
+    "name": "3rdeden",
+    "email": "npm@3rd-Eden.com"
+  },
+  "_npmVersion": "3.9.3",
+  "_phantomChildren": {},
+  "_requested": {
+    "raw": "ultron@~1.1.0",
+    "scope": null,
+    "escapedName": "ultron",
+    "name": "ultron",
+    "rawSpec": "~1.1.0",
+    "spec": ">=1.1.0 <1.2.0",
+    "type": "range"
+  },
+  "_requiredBy": [
+    "/ws"
+  ],
+  "_resolved": "https://registry.npmjs.org/ultron/-/ultron-1.1.0.tgz",
+  "_shasum": "b07a2e6a541a815fc6a34ccd4533baec307ca864",
+  "_shrinkwrap": null,
+  "_spec": "ultron@~1.1.0",
+  "_where": "/Users/ilya/Work/opal/lib/opal/cli_runners/node_modules/ws",
+  "author": {
+    "name": "Arnout Kazemier"
+  },
+  "bugs": {
+    "url": "https://github.com/unshiftio/ultron/issues"
+  },
+  "dependencies": {},
+  "description": "Ultron is high-intelligence robot. It gathers intel so it can start improving upon his rudimentary design",
+  "devDependencies": {
+    "assume": "1.4.x",
+    "eventemitter3": "2.0.x",
+    "istanbul": "0.4.x",
+    "mocha": "~3.2.0",
+    "pre-commit": "~1.2.0"
+  },
+  "directories": {},
+  "dist": {
+    "shasum": "b07a2e6a541a815fc6a34ccd4533baec307ca864",
+    "tarball": "https://registry.npmjs.org/ultron/-/ultron-1.1.0.tgz"
+  },
+  "gitHead": "6eb97b74402978aebda4a9d497cb6243ec80c9f1",
+  "homepage": "https://github.com/unshiftio/ultron",
+  "keywords": [
+    "Ultron",
+    "robot",
+    "gather",
+    "intelligence",
+    "event",
+    "events",
+    "eventemitter",
+    "emitter",
+    "cleanup"
+  ],
+  "license": "MIT",
+  "main": "index.js",
+  "maintainers": [
+    {
+      "name": "unshift",
+      "email": "npm@unshift.io"
+    },
+    {
+      "name": "v1",
+      "email": "info@3rd-Eden.com"
+    },
+    {
+      "name": "3rdeden",
+      "email": "npm@3rd-Eden.com"
+    }
+  ],
+  "name": "ultron",
+  "optionalDependencies": {},
+  "readme": "ERROR: No README data found!",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/unshiftio/ultron.git"
+  },
+  "scripts": {
+    "100%": "istanbul check-coverage --statements 100 --functions 100 --lines 100 --branches 100",
+    "coverage": "istanbul cover _mocha -- test.js",
+    "test": "mocha test.js",
+    "test-travis": "istanbul cover _mocha --report lcovonly -- test.js",
+    "watch": "mocha --watch test.js"
+  },
+  "version": "1.1.0"
+}
diff --git a/lib/opal/cli_runners/node_modules/ws/LICENSE b/lib/opal/cli_runners/node_modules/ws/LICENSE
new file mode 100644
index 00000000..a145cd1d
--- /dev/null
+++ b/lib/opal/cli_runners/node_modules/ws/LICENSE
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2011 Einar Otto Stangvik <einaros@gmail.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/lib/opal/cli_runners/node_modules/ws/README.md b/lib/opal/cli_runners/node_modules/ws/README.md
new file mode 100644
index 00000000..714f1a8d
--- /dev/null
+++ b/lib/opal/cli_runners/node_modules/ws/README.md
@@ -0,0 +1,259 @@
+# ws: a Node.js WebSocket library
+
+[![Version npm](https://img.shields.io/npm/v/ws.svg)](https://www.npmjs.com/package/ws)
+[![Linux Build](https://img.shields.io/travis/websockets/ws/master.svg)](https://travis-ci.org/websockets/ws)
+[![Windows Build](https://ci.appveyor.com/api/projects/status/github/websockets/ws?branch=master&svg=true)](https://ci.appveyor.com/project/lpinca/ws)
+[![Coverage Status](https://img.shields.io/coveralls/websockets/ws/master.svg)](https://coveralls.io/r/websockets/ws?branch=master)
+
+`ws` is a simple to use, blazing fast, and thoroughly tested WebSocket client
+and server implementation.
+
+Passes the quite extensive Autobahn test suite. See http://websockets.github.io/ws/
+for the full reports.
+
+## Protocol support
+
+* **HyBi drafts 07-12** (Use the option `protocolVersion: 8`)
+* **HyBi drafts 13-17** (Current default, alternatively option `protocolVersion: 13`)
+
+## Installing
+
+```
+npm install --save ws
+```
+
+### Opt-in for performance
+
+There are 2 optional modules that can be installed along side with the `ws`
+module. These modules are binary addons which improve certain operations, but as
+they are binary addons they require compilation which can fail if no c++
+compiler is installed on the host system.
+
+- `npm install --save bufferutil`: Improves internal buffer operations which
+  allows for faster processing of masked WebSocket frames and general buffer
+  operations.
+- `npm install --save utf-8-validate`: The specification requires validation of
+  invalid UTF-8 chars, some of these validations could not be done in JavaScript
+  hence the need for a binary addon. In most cases you will already be
+  validating the input that you receive for security purposes leading to double
+  validation. But if you want to be 100% spec-conforming and have fast
+  validation of UTF-8 then this module is a must.
+
+## API Docs
+
+See [`/doc/ws.md`](https://github.com/websockets/ws/blob/master/doc/ws.md)
+for Node.js-like docs for the ws classes.
+
+## WebSocket compression
+
+`ws` supports the [permessage-deflate extension][permessage-deflate] extension
+which enables the client and server to negotiate a compression algorithm and
+its parameters, and then selectively apply it to the data payloads of each
+WebSocket message.
+
+The extension is enabled by default but adds a significant overhead in terms of
+performance and memory comsumption. We suggest to use WebSocket compression
+only if it is really needed.
+
+To disable the extension you can set the `perMessageDeflate` option to `false`.
+On the server:
+
+```js
+const WebSocket = require('ws');
+
+const wss = new WebSocket.Server({
+  perMessageDeflate: false,
+  port: 8080
+});
+```
+
+On the client:
+
+```js
+const WebSocket = require('ws');
+
+const ws = new WebSocket('ws://www.host.com/path', {
+  perMessageDeflate: false
+});
+```
+
+## Usage examples
+
+### Sending and receiving text data
+
+```js
+const WebSocket = require('ws');
+
+const ws = new WebSocket('ws://www.host.com/path');
+
+ws.on('open', function open() {
+  ws.send('something');
+});
+
+ws.on('message', function incoming(data, flags) {
+  // flags.binary will be set if a binary data is received.
+  // flags.masked will be set if the data was masked.
+});
+```
+
+### Sending binary data
+
+```js
+const WebSocket = require('ws');
+
+const ws = new WebSocket('ws://www.host.com/path');
+
+ws.on('open', function open() {
+  const array = new Float32Array(5);
+
+  for (var i = 0; i < array.length; ++i) {
+    array[i] = i / 2;
+  }
+
+  ws.send(array);
+});
+```
+
+### Server example
+
+```js
+const WebSocket = require('ws');
+
+const wss = new WebSocket.Server({ port: 8080 });
+
+wss.on('connection', function connection(ws) {
+  ws.on('message', function incoming(message) {
+    console.log('received: %s', message);
+  });
+
+  ws.send('something');
+});
+```
+
+### Broadcast example
+
+```js
+const WebSocket = require('ws');
+
+const wss = new WebSocket.Server({ port: 8080 });
+
+// Broadcast to all.
+wss.broadcast = function broadcast(data) {
+  wss.clients.forEach(function each(client) {
+    if (client.readyState === WebSocket.OPEN) {
+      client.send(data);
+    }
+  });
+};
+
+wss.on('connection', function connection(ws) {
+  ws.on('message', function incoming(data) {
+    // Broadcast to everyone else.
+    wss.clients.forEach(function each(client) {
+      if (client !== ws && client.readyState === WebSocket.OPEN) {
+        client.send(data);
+      }
+    });
+  });
+});
+```
+
+### ExpressJS example
+
+```js
+const express = require('express');
+const http = require('http');
+const url = require('url');
+const WebSocket = require('ws');
+
+const app = express();
+
+app.use(function (req, res) {
+  res.send({ msg: "hello" });
+});
+
+const server = http.createServer(app);
+const wss = new WebSocket.Server({ server });
+
+wss.on('connection', function connection(ws) {
+  const location = url.parse(ws.upgradeReq.url, true);
+  // You might use location.query.access_token to authenticate or share sessions
+  // or ws.upgradeReq.headers.cookie (see http://stackoverflow.com/a/16395220/151312)
+
+  ws.on('message', function incoming(message) {
+    console.log('received: %s', message);
+  });
+
+  ws.send('something');
+});
+
+server.listen(8080, function listening() {
+  console.log('Listening on %d', server.address().port);
+});
+```
+
+### echo.websocket.org demo
+
+```js
+const WebSocket = require('ws');
+
+const ws = new WebSocket('wss://echo.websocket.org/', {
+  origin: 'https://websocket.org'
+});
+
+ws.on('open', function open() {
+  console.log('connected');
+  ws.send(Date.now());
+});
+
+ws.on('close', function close() {
+  console.log('disconnected');
+});
+
+ws.on('message', function incoming(data, flags) {
+  console.log(`Roundtrip time: ${Date.now() - data} ms`, flags);
+
+  setTimeout(function timeout() {
+    ws.send(Date.now());
+  }, 500);
+});
+```
+
+### Other examples
+
+For a full example with a browser client communicating with a ws server, see the
+examples folder.
+
+Otherwise, see the test cases.
+
+## Error handling best practices
+
+```js
+// If the WebSocket is closed before the following send is attempted
+ws.send('something');
+
+// Errors (both immediate and async write errors) can be detected in an optional
+// callback. The callback is also the only way of being notified that data has
+// actually been sent.
+ws.send('something', function ack(error) {
+  // If error is not defined, the send has been completed, otherwise the error
+  // object will indicate what failed.
+});
+
+// Immediate errors can also be handled with `try...catch`, but **note** that
+// since sends are inherently asynchronous, socket write failures will *not* be
+// captured when this technique is used.
+try { ws.send('something'); }
+catch (e) { /* handle error */ }
+```
+
+## Changelog
+
+We're using the GitHub [`releases`](https://github.com/websockets/ws/releases)
+for changelog entries.
+
+## License
+
+[MIT](LICENSE)
+
+[permessage-deflate]: https://tools.ietf.org/html/rfc7692
diff --git a/lib/opal/cli_runners/node_modules/ws/SECURITY.md b/lib/opal/cli_runners/node_modules/ws/SECURITY.md
new file mode 100644
index 00000000..fd8e07bc
--- /dev/null
+++ b/lib/opal/cli_runners/node_modules/ws/SECURITY.md
@@ -0,0 +1,33 @@
+# Security Guidelines
+
+Please contact us directly at **security@3rd-Eden.com** for any bug that might
+impact the security of this project. Please prefix the subject of your email
+with `[security]` in lowercase and square brackets. Our email filters will
+automatically prevent these messages from being moved to our spam box.
+
+You will receive an acknowledgement of your report within **24 hours**.
+
+All emails that do not include security vulnerabilities will be removed and
+blocked instantly.
+
+## Exceptions
+
+If you do not receive an acknowledgement within the said time frame please give
+us the benefit of the doubt as it's possible that we haven't seen it yet. In
+this case please send us a message **without details** using one of the
+following methods:
+
+- Contact the lead developers of this project on their personal e-mails. You
+  can find the e-mails in the git logs, for example using the following command:
+  `git --no-pager show -s --format='%an <%ae>' <gitsha>` where `<gitsha>` is the
+  SHA1 of their latest commit in the project.
+- Create a GitHub issue stating contact details and the severity of the issue.
+
+Once we have acknowledged receipt of your report and confirmed the bug
+ourselves we will work with you to fix the vulnerability and publicly acknowledge
+your responsible disclosure, if you wish. In addition to that we will report
+all vulnerabilities to the [Node Security Project](https://nodesecurity.io/).
+
+## History
+
+04 Jan 2016: [Buffer vulnerablity](https://github.com/websockets/ws/releases/tag/1.0.1)
diff --git a/lib/opal/cli_runners/node_modules/ws/index.js b/lib/opal/cli_runners/node_modules/ws/index.js
new file mode 100644
index 00000000..489e1694
--- /dev/null
+++ b/lib/opal/cli_runners/node_modules/ws/index.js
@@ -0,0 +1,15 @@
+/*!
+ * ws: a node.js websocket client
+ * Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
+ * MIT Licensed
+ */
+
+'use strict';
+
+const WebSocket = require('./lib/WebSocket');
+
+WebSocket.Server = require('./lib/WebSocketServer');
+WebSocket.Receiver = require('./lib/Receiver');
+WebSocket.Sender = require('./lib/Sender');
+
+module.exports = WebSocket;
diff --git a/lib/opal/cli_runners/node_modules/ws/lib/BufferUtil.fallback.js b/lib/opal/cli_runners/node_modules/ws/lib/BufferUtil.fallback.js
new file mode 100644
index 00000000..5fcde1c3
--- /dev/null
+++ b/lib/opal/cli_runners/node_modules/ws/lib/BufferUtil.fallback.js
@@ -0,0 +1,56 @@
+/*!
+ * ws: a node.js websocket client
+ * Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
+ * MIT Licensed
+ */
+
+'use strict';
+
+/**
+ * Merges an array of buffers into a target buffer.
+ *
+ * @param {Buffer} target The target buffer
+ * @param {Buffer[]} buffers The array of buffers to merge
+ * @public
+ */
+const merge = (target, buffers) => {
+  var offset = 0;
+  for (var i = 0; i < buffers.length; i++) {
+    const buf = buffers[i];
+    buf.copy(target, offset);
+    offset += buf.length;
+  }
+};
+
+/**
+ * Masks a buffer using the given mask.
+ *
+ * @param {Buffer} source The buffer to mask
+ * @param {Buffer} mask The mask to use
+ * @param {Buffer} output The buffer where to store the result
+ * @param {Number} offset The offset at which to start writing
+ * @param {Number} length The number of bytes to mask.
+ * @public
+ */
+const mask = (source, mask, output, offset, length) => {
+  for (var i = 0; i < length; i++) {
+    output[offset + i] = source[i] ^ mask[i & 3];
+  }
+};
+
+/**
+ * Unmasks a buffer using the given mask.
+ *
+ * @param {Buffer} buffer The buffer to unmask
+ * @param {Buffer} mask The mask to use
+ * @public
+ */
+const unmask = (buffer, mask) => {
+  // Required until https://github.com/nodejs/node/issues/9006 is resolved.
+  const length = buffer.length;
+  for (var i = 0; i < length; i++) {
+    buffer[i] ^= mask[i & 3];
+  }
+};
+
+module.exports = { merge, mask, unmask };
diff --git a/lib/opal/cli_runners/node_modules/ws/lib/BufferUtil.js b/lib/opal/cli_runners/node_modules/ws/lib/BufferUtil.js
new file mode 100644
index 00000000..7220fbc8
--- /dev/null
+++ b/lib/opal/cli_runners/node_modules/ws/lib/BufferUtil.js
@@ -0,0 +1,15 @@
+'use strict';
+
+/*!
+ * ws: a node.js websocket client
+ * Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
+ * MIT Licensed
+ */
+
+try {
+  const bufferUtil = require('bufferutil');
+
+  module.exports = bufferUtil.BufferUtil || bufferUtil;
+} catch (e) {
+  module.exports = require('./BufferUtil.fallback');
+}
diff --git a/lib/opal/cli_runners/node_modules/ws/lib/ErrorCodes.js b/lib/opal/cli_runners/node_modules/ws/lib/ErrorCodes.js
new file mode 100644
index 00000000..f5155716
--- /dev/null
+++ b/lib/opal/cli_runners/node_modules/ws/lib/ErrorCodes.js
@@ -0,0 +1,28 @@
+/*!
+ * ws: a node.js websocket client
+ * Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
+ * MIT Licensed
+ */
+
+'use strict';
+
+module.exports = {
+  isValidErrorCode: function (code) {
+    return (code >= 1000 && code <= 1013 && code !== 1004 && code !== 1005 && code !== 1006) ||
+      (code >= 3000 && code <= 4999);
+  },
+  1000: 'normal',
+  1001: 'going away',
+  1002: 'protocol error',
+  1003: 'unsupported data',
+  1004: 'reserved',
+  1005: 'reserved for extensions',
+  1006: 'reserved for extensions',
+  1007: 'inconsistent or invalid data',
+  1008: 'policy violation',
+  1009: 'message too big',
+  1010: 'extension handshake missing',
+  1011: 'an unexpected condition prevented the request from being fulfilled',
+  1012: 'service restart',
+  1013: 'try again later'
+};
diff --git a/lib/opal/cli_runners/node_modules/ws/lib/EventTarget.js b/lib/opal/cli_runners/node_modules/ws/lib/EventTarget.js
new file mode 100644
index 00000000..9720e4a2
--- /dev/null
+++ b/lib/opal/cli_runners/node_modules/ws/lib/EventTarget.js
@@ -0,0 +1,158 @@
+'use strict';
+
+/**
+ * Class representing an event.
+ *
+ * @private
+ */
+class Event {
+  /**
+   * Create a new `Event`.
+   *
+   * @param {String} type The name of the event
+   * @param {Object} target A reference to the target to which the event was dispatched
+   */
+  constructor (type, target) {
+    this.target = target;
+    this.type = type;
+  }
+}
+
+/**
+ * Class representing a message event.
+ *
+ * @extends Event
+ * @private
+ */
+class MessageEvent extends Event {
+  /**
+   * Create a new `MessageEvent`.
+   *
+   * @param {(String|Buffer|ArrayBuffer)} data The received data
+   * @param {Boolean} isBinary Specifies if `data` is binary
+   * @param {WebSocket} target A reference to the target to which the event was dispatched
+   */
+  constructor (data, isBinary, target) {
+    super('message', target);
+
+    this.binary = isBinary; // non-standard.
+    this.data = data;
+  }
+}
+
+/**
+ * Class representing a close event.
+ *
+ * @extends Event
+ * @private
+ */
+class CloseEvent extends Event {
+  /**
+   * Create a new `CloseEvent`.
+   *
+   * @param {Number} code The status code explaining why the connection is being closed
+   * @param {String} reason A human-readable string explaining why the connection is closing
+   * @param {WebSocket} target A reference to the target to which the event was dispatched
+   */
+  constructor (code, reason, target) {
+    super('close', target);
+
+    this.wasClean = code === undefined || code === 1000;
+    this.reason = reason;
+    this.target = target;
+    this.type = 'close';
+    this.code = code;
+  }
+}
+
+/**
+ * Class representing an open event.
+ *
+ * @extends Event
+ * @private
+ */
+class OpenEvent extends Event {
+  /**
+   * Create a new `OpenEvent`.
+   *
+   * @param {WebSocket} target A reference to the target to which the event was dispatched
+   */
+  constructor (target) {
+    super('open', target);
+  }
+}
+
+/**
+ * This provides methods for emulating the `EventTarget` interface. It's not
+ * meant to be used directly.
+ *
+ * @mixin
+ */
+const EventTarget = {
+  /**
+   * Register an event listener.
+   *
+   * @param {String} method A string representing the event type to listen for
+   * @param {Function} listener The listener to add
+   * @public
+   */
+  addEventListener (method, listener) {
+    if (typeof listener !== 'function') return;
+
+    function onMessage (data, flags) {
+      if (flags.binary && this.binaryType === 'arraybuffer') {
+        data = new Uint8Array(data).buffer;
+      }
+      listener.call(this, new MessageEvent(data, !!flags.binary, this));
+    }
+
+    function onClose (code, message) {
+      listener.call(this, new CloseEvent(code, message, this));
+    }
+
+    function onError (event) {
+      event.type = 'error';
+      event.target = this;
+      listener.call(this, event);
+    }
+
+    function onOpen () {
+      listener.call(this, new OpenEvent(this));
+    }
+
+    if (method === 'message') {
+      onMessage._listener = listener;
+      this.on(method, onMessage);
+    } else if (method === 'close') {
+      onClose._listener = listener;
+      this.on(method, onClose);
+    } else if (method === 'error') {
+      onError._listener = listener;
+      this.on(method, onError);
+    } else if (method === 'open') {
+      onOpen._listener = listener;
+      this.on(method, onOpen);
+    } else {
+      this.on(method, listener);
+    }
+  },
+
+  /**
+   * Remove an event listener.
+   *
+   * @param {String} method A string representing the event type to remove
+   * @param {Function} listener The listener to remove
+   * @public
+   */
+  removeEventListener (method, listener) {
+    const listeners = this.listeners(method);
+
+    for (var i = 0; i < listeners.length; i++) {
+      if (listeners[i] === listener || listeners[i]._listener === listener) {
+        this.removeListener(method, listeners[i]);
+      }
+    }
+  }
+};
+
+module.exports = EventTarget;
diff --git a/lib/opal/cli_runners/node_modules/ws/lib/Extensions.js b/lib/opal/cli_runners/node_modules/ws/lib/Extensions.js
new file mode 100644
index 00000000..036c7138
--- /dev/null
+++ b/lib/opal/cli_runners/node_modules/ws/lib/Extensions.js
@@ -0,0 +1,69 @@
+'use strict';
+
+/**
+ * Module exports.
+ */
+
+exports.parse = parse;
+exports.format = format;
+
+/**
+ * Parse extensions header value
+ */
+
+function parse (value) {
+  value = value || '';
+
+  var extensions = {};
+
+  value.split(',').forEach(function (v) {
+    var params = v.split(';');
+    var token = params.shift().trim();
+    var paramsList = extensions[token] = extensions[token] || [];
+    var parsedParams = {};
+
+    params.forEach(function (param) {
+      var parts = param.trim().split('=');
+      var key = parts[0];
+      var value = parts[1];
+      if (value === undefined) {
+        value = true;
+      } else {
+        // unquote value
+        if (value[0] === '"') {
+          value = value.slice(1);
+        }
+        if (value[value.length - 1] === '"') {
+          value = value.slice(0, value.length - 1);
+        }
+      }
+      (parsedParams[key] = parsedParams[key] || []).push(value);
+    });
+
+    paramsList.push(parsedParams);
+  });
+
+  return extensions;
+}
+
+/**
+ * Format extensions header value
+ */
+
+function format (value) {
+  return Object.keys(value).map(function (token) {
+    var paramsList = value[token];
+    if (!Array.isArray(paramsList)) {
+      paramsList = [paramsList];
+    }
+    return paramsList.map(function (params) {
+      return [token].concat(Object.keys(params).map(function (k) {
+        var p = params[k];
+        if (!Array.isArray(p)) p = [p];
+        return p.map(function (v) {
+          return v === true ? k : k + '=' + v;
+        }).join('; ');
+      })).join('; ');
+    }).join(', ');
+  }).join(', ');
+}
diff --git a/lib/opal/cli_runners/node_modules/ws/lib/PerMessageDeflate.js b/lib/opal/cli_runners/node_modules/ws/lib/PerMessageDeflate.js
new file mode 100644
index 00000000..d1569546
--- /dev/null
+++ b/lib/opal/cli_runners/node_modules/ws/lib/PerMessageDeflate.js
@@ -0,0 +1,339 @@
+'use strict';
+
+const zlib = require('zlib');
+
+const AVAILABLE_WINDOW_BITS = [8, 9, 10, 11, 12, 13, 14, 15];
+const DEFAULT_WINDOW_BITS = 15;
+const DEFAULT_MEM_LEVEL = 8;
+const TRAILER = Buffer.from([0x00, 0x00, 0xff, 0xff]);
+const EMPTY_BLOCK = Buffer.from([0x00]);
+
+/**
+ * Per-message Compression Extensions implementation
+ */
+class PerMessageDeflate {
+  constructor (options, isServer, maxPayload) {
+    this._options = options || {};
+    this._isServer = !!isServer;
+    this._inflate = null;
+    this._deflate = null;
+    this.params = null;
+    this._maxPayload = maxPayload || 0;
+    this.threshold = this._options.threshold === undefined ? 1024 : this._options.threshold;
+  }
+
+  /**
+   * Create extension parameters offer
+   *
+   * @api public
+   */
+
+  offer () {
+    var params = {};
+    if (this._options.serverNoContextTakeover) {
+      params.server_no_context_takeover = true;
+    }
+    if (this._options.clientNoContextTakeover) {
+      params.client_no_context_takeover = true;
+    }
+    if (this._options.serverMaxWindowBits) {
+      params.server_max_window_bits = this._options.serverMaxWindowBits;
+    }
+    if (this._options.clientMaxWindowBits) {
+      params.client_max_window_bits = this._options.clientMaxWindowBits;
+    } else if (this._options.clientMaxWindowBits == null) {
+      params.client_max_window_bits = true;
+    }
+    return params;
+  }
+
+  /**
+   * Accept extension offer
+   *
+   * @api public
+   */
+  accept (paramsList) {
+    paramsList = this.normalizeParams(paramsList);
+
+    var params;
+    if (this._isServer) {
+      params = this.acceptAsServer(paramsList);
+    } else {
+      params = this.acceptAsClient(paramsList);
+    }
+
+    this.params = params;
+    return params;
+  }
+
+  /**
+   * Releases all resources used by the extension
+   *
+   * @api public
+   */
+  cleanup () {
+    if (this._inflate) {
+      if (this._inflate.writeInProgress) {
+        this._inflate.pendingClose = true;
+      } else {
+        this._inflate.close();
+        this._inflate = null;
+      }
+    }
+    if (this._deflate) {
+      if (this._deflate.writeInProgress) {
+        this._deflate.pendingClose = true;
+      } else {
+        this._deflate.close();
+        this._deflate = null;
+      }
+    }
+  }
+
+  /**
+   * Accept extension offer from client
+   *
+   * @api private
+   */
+
+  acceptAsServer (paramsList) {
+    var accepted = {};
+    var result = paramsList.some((params) => {
+      accepted = {};
+      if (this._options.serverNoContextTakeover === false && params.server_no_context_takeover) {
+        return;
+      }
+      if (this._options.serverMaxWindowBits === false && params.server_max_window_bits) {
+        return;
+      }
+      if (typeof this._options.serverMaxWindowBits === 'number' &&
+          typeof params.server_max_window_bits === 'number' &&
+          this._options.serverMaxWindowBits > params.server_max_window_bits) {
+        return;
+      }
+      if (typeof this._options.clientMaxWindowBits === 'number' && !params.client_max_window_bits) {
+        return;
+      }
+
+      if (this._options.serverNoContextTakeover || params.server_no_context_takeover) {
+        accepted.server_no_context_takeover = true;
+      }
+      if (this._options.clientNoContextTakeover) {
+        accepted.client_no_context_takeover = true;
+      }
+      if (this._options.clientNoContextTakeover !== false && params.client_no_context_takeover) {
+        accepted.client_no_context_takeover = true;
+      }
+      if (typeof this._options.serverMaxWindowBits === 'number') {
+        accepted.server_max_window_bits = this._options.serverMaxWindowBits;
+      } else if (typeof params.server_max_window_bits === 'number') {
+        accepted.server_max_window_bits = params.server_max_window_bits;
+      }
+      if (typeof this._options.clientMaxWindowBits === 'number') {
+        accepted.client_max_window_bits = this._options.clientMaxWindowBits;
+      } else if (this._options.clientMaxWindowBits !== false && typeof params.client_max_window_bits === 'number') {
+        accepted.client_max_window_bits = params.client_max_window_bits;
+      }
+      return true;
+    });
+
+    if (!result) {
+      throw new Error(`Doesn't support the offered configuration`);
+    }
+
+    return accepted;
+  }
+
+  /**
+   * Accept extension response from server
+   *
+   * @api privaye
+   */
+
+  acceptAsClient (paramsList) {
+    var params = paramsList[0];
+    if (this._options.clientNoContextTakeover != null) {
+      if (this._options.clientNoContextTakeover === false && params.client_no_context_takeover) {
+        throw new Error('Invalid value for "client_no_context_takeover"');
+      }
+    }
+    if (this._options.clientMaxWindowBits != null) {
+      if (this._options.clientMaxWindowBits === false && params.client_max_window_bits) {
+        throw new Error('Invalid value for "client_max_window_bits"');
+      }
+      if (typeof this._options.clientMaxWindowBits === 'number' &&
+          (!params.client_max_window_bits || params.client_max_window_bits > this._options.clientMaxWindowBits)) {
+        throw new Error('Invalid value for "client_max_window_bits"');
+      }
+    }
+    return params;
+  }
+
+  /**
+   * Normalize extensions parameters
+   *
+   * @api private
+   */
+
+  normalizeParams (paramsList) {
+    return paramsList.map((params) => {
+      Object.keys(params).forEach((key) => {
+        var value = params[key];
+        if (value.length > 1) {
+          throw new Error('Multiple extension parameters for ' + key);
+        }
+
+        value = value[0];
+
+        switch (key) {
+          case 'server_no_context_takeover':
+          case 'client_no_context_takeover':
+            if (value !== true) {
+              throw new Error(`invalid extension parameter value for ${key} (${value})`);
+            }
+            params[key] = true;
+            break;
+          case 'server_max_window_bits':
+          case 'client_max_window_bits':
+            if (typeof value === 'string') {
+              value = parseInt(value, 10);
+              if (!~AVAILABLE_WINDOW_BITS.indexOf(value)) {
+                throw new Error(`invalid extension parameter value for ${key} (${value})`);
+              }
+            }
+            if (!this._isServer && value === true) {
+              throw new Error(`Missing extension parameter value for ${key}`);
+            }
+            params[key] = value;
+            break;
+          default:
+            throw new Error(`Not defined extension parameter (${key})`);
+        }
+      });
+      return params;
+    });
+  }
+
+  /**
+   * Decompress data.
+   *
+   * @param {Buffer} data Compressed data
+   * @param {Boolean} fin Specifies whether or not this is the last fragment
+   * @param {Function} callback Callback
+   * @public
+   */
+  decompress (data, fin, callback) {
+    const endpoint = this._isServer ? 'client' : 'server';
+
+    if (!this._inflate) {
+      const maxWindowBits = this.params[`${endpoint}_max_window_bits`];
+      this._inflate = zlib.createInflateRaw({
+        windowBits: typeof maxWindowBits === 'number' ? maxWindowBits : DEFAULT_WINDOW_BITS
+      });
+    }
+    this._inflate.writeInProgress = true;
+
+    var totalLength = 0;
+    const buffers = [];
+    var err;
+
+    const onData = (data) => {
+      totalLength += data.length;
+      if (this._maxPayload < 1 || totalLength <= this._maxPayload) {
+        return buffers.push(data);
+      }
+
+      err = new Error('max payload size exceeded');
+      err.closeCode = 1009;
+      this._inflate.reset();
+    };
+
+    const onError = (err) => {
+      cleanup();
+      callback(err);
+    };
+
+    const cleanup = () => {
+      if (!this._inflate) return;
+
+      this._inflate.removeListener('error', onError);
+      this._inflate.removeListener('data', onData);
+      this._inflate.writeInProgress = false;
+
+      if (
+        fin && this.params[`${endpoint}_no_context_takeover`] ||
+        this._inflate.pendingClose
+      ) {
+        this._inflate.close();
+        this._inflate = null;
+      }
+    };
+
+    this._inflate.on('error', onError).on('data', onData);
+    this._inflate.write(data);
+    if (fin) this._inflate.write(TRAILER);
+
+    this._inflate.flush(() => {
+      cleanup();
+      if (err) callback(err);
+      else callback(null, Buffer.concat(buffers, totalLength));
+    });
+  }
+
+  /**
+   * Compress message
+   *
+   * @api public
+   */
+
+  compress (data, fin, callback) {
+    if (!data || data.length === 0) {
+      return callback(null, EMPTY_BLOCK);
+    }
+
+    var endpoint = this._isServer ? 'server' : 'client';
+
+    if (!this._deflate) {
+      var maxWindowBits = this.params[endpoint + '_max_window_bits'];
+      this._deflate = zlib.createDeflateRaw({
+        flush: zlib.Z_SYNC_FLUSH,
+        windowBits: typeof maxWindowBits === 'number' ? maxWindowBits : DEFAULT_WINDOW_BITS,
+        memLevel: this._options.memLevel || DEFAULT_MEM_LEVEL
+      });
+    }
+    this._deflate.writeInProgress = true;
+
+    const buffers = [];
+
+    const onData = (data) => buffers.push(data);
+    const onError = (err) => {
+      cleanup();
+      callback(err);
+    };
+    const cleanup = () => {
+      if (!this._deflate) return;
+      this._deflate.removeListener('error', onError);
+      this._deflate.removeListener('data', onData);
+      this._deflate.writeInProgress = false;
+      if ((fin && this.params[endpoint + '_no_context_takeover']) || this._deflate.pendingClose) {
+        this._deflate.close();
+        this._deflate = null;
+      }
+    };
+
+    this._deflate.on('error', onError).on('data', onData);
+    this._deflate.write(data);
+    this._deflate.flush(zlib.Z_SYNC_FLUSH, () => {
+      cleanup();
+      var data = Buffer.concat(buffers);
+      if (fin) {
+        data = data.slice(0, data.length - 4);
+      }
+      callback(null, data);
+    });
+  }
+}
+
+PerMessageDeflate.extensionName = 'permessage-deflate';
+
+module.exports = PerMessageDeflate;
diff --git a/lib/opal/cli_runners/node_modules/ws/lib/Receiver.js b/lib/opal/cli_runners/node_modules/ws/lib/Receiver.js
new file mode 100644
index 00000000..2c2d52b0
--- /dev/null
+++ b/lib/opal/cli_runners/node_modules/ws/lib/Receiver.js
@@ -0,0 +1,520 @@
+/*!
+ * ws: a node.js websocket client
+ * Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
+ * MIT Licensed
+ */
+
+'use strict';
+
+const PerMessageDeflate = require('./PerMessageDeflate');
+const isValidUTF8 = require('./Validation');
+const bufferUtil = require('./BufferUtil');
+const ErrorCodes = require('./ErrorCodes');
+
+const EMPTY_BUFFER = Buffer.alloc(0);
+
+const GET_INFO = 0;
+const GET_PAYLOAD_LENGTH_16 = 1;
+const GET_PAYLOAD_LENGTH_64 = 2;
+const HAVE_LENGTH = 3;
+const GET_MASK = 4;
+const GET_DATA = 5;
+const HANDLE_DATA = 6;
+const INFLATING = 7;
+
+/**
+ * HyBi Receiver implementation.
+ */
+class Receiver {
+  /**
+   * Creates a Receiver instance.
+   *
+   * @param {Object} extensions An object containing the negotiated extensions
+   * @param {Number} maxPayload The maximum allowed message length
+   */
+  constructor (extensions, maxPayload) {
+    this.extensions = extensions || {};
+    this.maxPayload = maxPayload | 0;
+
+    this.bufferedBytes = 0;
+    this.buffers = [];
+
+    this.compressed = false;
+    this.payloadLength = 0;
+    this.fragmented = 0;
+    this.masked = false;
+    this.fin = false;
+    this.mask = null;
+    this.opcode = 0;
+
+    this.totalPayloadLength = 0;
+    this.messageLength = 0;
+    this.fragments = [];
+
+    this.cleanupCallback = null;
+    this.hadError = false;
+    this.dead = false;
+
+    this.onmessage = null;
+    this.onclose = null;
+    this.onerror = null;
+    this.onping = null;
+    this.onpong = null;
+
+    this.state = GET_INFO;
+  }
+
+  /**
+   * Consumes bytes from the available buffered data.
+   *
+   * @param {Number} bytes The number of bytes to consume
+   * @return {Buffer} Consumed bytes
+   * @private
+   */
+  readBuffer (bytes) {
+    var offset = 0;
+    var dst;
+    var l;
+
+    this.bufferedBytes -= bytes;
+
+    if (bytes === this.buffers[0].length) return this.buffers.shift();
+
+    if (bytes < this.buffers[0].length) {
+      dst = this.buffers[0].slice(0, bytes);
+      this.buffers[0] = this.buffers[0].slice(bytes);
+      return dst;
+    }
+
+    dst = new Buffer(bytes);
+
+    while (bytes > 0) {
+      l = this.buffers[0].length;
+
+      if (bytes >= l) {
+        this.buffers[0].copy(dst, offset);
+        offset += l;
+        this.buffers.shift();
+      } else {
+        this.buffers[0].copy(dst, offset, 0, bytes);
+        this.buffers[0] = this.buffers[0].slice(bytes);
+      }
+
+      bytes -= l;
+    }
+
+    return dst;
+  }
+
+  /**
+   * Checks if the number of buffered bytes is bigger or equal than `n` and
+   * calls `cleanup` if necessary.
+   *
+   * @param {Number} n The number of bytes to check against
+   * @return {Boolean} `true` if `bufferedBytes >= n`, else `false`
+   * @private
+   */
+  hasBufferedBytes (n) {
+    if (this.bufferedBytes >= n) return true;
+
+    if (this.dead) this.cleanup(this.cleanupCallback);
+    return false;
+  }
+
+  /**
+   * Adds new data to the parser.
+   *
+   * @public
+   */
+  add (data) {
+    if (this.dead) return;
+
+    this.bufferedBytes += data.length;
+    this.buffers.push(data);
+    this.startLoop();
+  }
+
+  /**
+   * Starts the parsing loop.
+   *
+   * @private
+   */
+  startLoop () {
+    while (true) {
+      if (this.state === GET_INFO) {
+        if (!this.getInfo()) break;
+      } else if (this.state === GET_PAYLOAD_LENGTH_16) {
+        if (!this.getPayloadLength16()) break;
+      } else if (this.state === GET_PAYLOAD_LENGTH_64) {
+        if (!this.getPayloadLength64()) break;
+      } else if (this.state === HAVE_LENGTH) {
+        if (!this.haveLength()) break;
+      } else if (this.state === GET_MASK) {
+        if (!this.getMask()) break;
+      } else if (this.state === GET_DATA) {
+        if (!this.getData()) break;
+      } else { // `HANDLE_DATA` or `INFLATING`
+        break;
+      }
+    }
+  }
+
+  /**
+   * Reads the first two bytes of a frame.
+   *
+   * @return {Boolean} `true` if the operation is successful, else `false`
+   * @private
+   */
+  getInfo () {
+    if (!this.hasBufferedBytes(2)) return false;
+
+    const buf = this.readBuffer(2);
+
+    if ((buf[0] & 0x30) !== 0x00) {
+      this.error(new Error('RSV2 and RSV3 must be clear'), 1002);
+      return false;
+    }
+
+    const compressed = (buf[0] & 0x40) === 0x40;
+
+    if (compressed && !this.extensions[PerMessageDeflate.extensionName]) {
+      this.error(new Error('RSV1 must be clear'), 1002);
+      return false;
+    }
+
+    this.fin = (buf[0] & 0x80) === 0x80;
+    this.opcode = buf[0] & 0x0f;
+    this.payloadLength = buf[1] & 0x7f;
+
+    if (this.opcode === 0x00) {
+      if (compressed) {
+        this.error(new Error('RSV1 must be clear'), 1002);
+        return false;
+      }
+
+      if (!this.fragmented) {
+        this.error(new Error(`invalid opcode: ${this.opcode}`), 1002);
+        return false;
+      } else {
+        this.opcode = this.fragmented;
+      }
+    } else if (this.opcode === 0x01 || this.opcode === 0x02) {
+      if (this.fragmented) {
+        this.error(new Error(`invalid opcode: ${this.opcode}`), 1002);
+        return false;
+      }
+
+      this.compressed = compressed;
+    } else if (this.opcode > 0x07 && this.opcode < 0x0b) {
+      if (!this.fin) {
+        this.error(new Error('FIN must be set'), 1002);
+        return false;
+      }
+
+      if (compressed) {
+        this.error(new Error('RSV1 must be clear'), 1002);
+        return false;
+      }
+
+      if (this.payloadLength > 0x7d) {
+        this.error(new Error('invalid payload length'), 1002);
+        return false;
+      }
+    } else {
+      this.error(new Error(`invalid opcode: ${this.opcode}`), 1002);
+      return false;
+    }
+
+    if (!this.fin && !this.fragmented) this.fragmented = this.opcode;
+
+    this.masked = (buf[1] & 0x80) === 0x80;
+
+    if (this.payloadLength === 126) this.state = GET_PAYLOAD_LENGTH_16;
+    else if (this.payloadLength === 127) this.state = GET_PAYLOAD_LENGTH_64;
+    else this.state = HAVE_LENGTH;
+
+    return true;
+  }
+
+  /**
+   * Gets extended payload length (7+16).
+   *
+   * @return {Boolean} `true` if payload length has been read, else `false`
+   * @private
+   */
+  getPayloadLength16 () {
+    if (!this.hasBufferedBytes(2)) return false;
+
+    this.payloadLength = this.readBuffer(2).readUInt16BE(0, true);
+    this.state = HAVE_LENGTH;
+    return true;
+  }
+
+  /**
+   * Gets extended payload length (7+64).
+   *
+   * @return {Boolean} `true` if payload length has been read, else `false`
+   * @private
+   */
+  getPayloadLength64 () {
+    if (!this.hasBufferedBytes(8)) return false;
+
+    const buf = this.readBuffer(8);
+    const num = buf.readUInt32BE(0, true);
+
+    //
+    // The maximum safe integer in JavaScript is 2^53 - 1. An error is returned
+    // if payload length is greater than this number.
+    //
+    if (num > Math.pow(2, 53 - 32) - 1) {
+      this.error(new Error('max payload size exceeded'), 1009);
+      return false;
+    }
+
+    this.payloadLength = num * Math.pow(2, 32) + buf.readUInt32BE(4, true);
+    this.state = HAVE_LENGTH;
+    return true;
+  }
+
+  /**
+   * Payload length has been read.
+   *
+   * @return {Boolean} `false` if payload length exceeds `maxPayload`, else `true`
+   * @private
+   */
+  haveLength () {
+    if (this.opcode < 0x08 && this.maxPayloadExceeded(this.payloadLength)) {
+      return false;
+    }
+
+    if (this.masked) this.state = GET_MASK;
+    else this.state = GET_DATA;
+    return true;
+  }
+
+  /**
+   * Reads mask bytes.
+   *
+   * @return {Boolean} `true` if the mask has been read, else `false`
+   * @private
+   */
+  getMask () {
+    if (!this.hasBufferedBytes(4)) return false;
+
+    this.mask = this.readBuffer(4);
+    this.state = GET_DATA;
+    return true;
+  }
+
+  /**
+   * Reads data bytes.
+   *
+   * @return {Boolean} `true` if the data bytes have been read, else `false`
+   * @private
+   */
+  getData () {
+    var data = EMPTY_BUFFER;
+
+    if (this.payloadLength) {
+      if (!this.hasBufferedBytes(this.payloadLength)) return false;
+
+      data = this.readBuffer(this.payloadLength);
+      if (this.masked) bufferUtil.unmask(data, this.mask);
+    }
+
+    this.state = HANDLE_DATA;
+
+    if (this.opcode > 0x07) {
+      this.controlMessage(data);
+    } else if (this.compressed) {
+      this.state = INFLATING;
+      this.decompress(data);
+    } else if (this.pushFragment(data)) {
+      this.dataMessage();
+    }
+
+    return true;
+  }
+
+  /**
+   * Decompresses data.
+   *
+   * @param {Buffer} data Compressed data
+   * @private
+   */
+  decompress (data) {
+    const extension = this.extensions[PerMessageDeflate.extensionName];
+
+    extension.decompress(data, this.fin, (err, buf) => {
+      if (err) {
+        this.error(err, err.closeCode === 1009 ? 1009 : 1007);
+        return;
+      }
+
+      if (this.pushFragment(buf)) this.dataMessage();
+      if (this.state === GET_INFO) this.startLoop();
+    });
+  }
+
+  /**
+   * Handles a data message.
+   *
+   * @private
+   */
+  dataMessage () {
+    if (this.fin) {
+      const buf = this.fragments.length > 1
+        ? Buffer.concat(this.fragments, this.messageLength)
+        : this.fragments.length === 1
+          ? this.fragments[0]
+          : EMPTY_BUFFER;
+
+      this.totalPayloadLength = 0;
+      this.fragments.length = 0;
+      this.messageLength = 0;
+      this.fragmented = 0;
+
+      if (this.opcode === 2) {
+        this.onmessage(buf, { masked: this.masked, binary: true });
+      } else {
+        if (!isValidUTF8(buf)) {
+          this.error(new Error('invalid utf8 sequence'), 1007);
+          return;
+        }
+
+        this.onmessage(buf.toString(), { masked: this.masked });
+      }
+    }
+
+    this.state = GET_INFO;
+  }
+
+  /**
+   * Handles a control message.
+   *
+   * @param {Buffer} data Data to handle
+   * @private
+   */
+  controlMessage (data) {
+    if (this.opcode === 0x08) {
+      if (data.length === 0) {
+        this.onclose(1000, '', { masked: this.masked });
+        this.cleanup(this.cleanupCallback);
+      } else if (data.length === 1) {
+        this.error(new Error('invalid payload length'), 1002);
+      } else {
+        const code = data.readUInt16BE(0, true);
+
+        if (!ErrorCodes.isValidErrorCode(code)) {
+          this.error(new Error(`invalid status code: ${code}`), 1002);
+          return;
+        }
+
+        const buf = data.slice(2);
+
+        if (!isValidUTF8(buf)) {
+          this.error(new Error('invalid utf8 sequence'), 1007);
+          return;
+        }
+
+        this.onclose(code, buf.toString(), { masked: this.masked });
+        this.cleanup(this.cleanupCallback);
+      }
+
+      return;
+    }
+
+    const flags = { masked: this.masked, binary: true };
+
+    if (this.opcode === 0x09) this.onping(data, flags);
+    else this.onpong(data, flags);
+
+    this.state = GET_INFO;
+  }
+
+  /**
+   * Handles an error.
+   *
+   * @param {Error} err The error
+   * @param {Number} code Close code
+   * @private
+   */
+  error (err, code) {
+    this.onerror(err, code);
+    this.hadError = true;
+    this.cleanup(this.cleanupCallback);
+  }
+
+  /**
+   * Checks payload size, disconnects socket when it exceeds `maxPayload`.
+   *
+   * @param {Number} length Payload length
+   * @private
+   */
+  maxPayloadExceeded (length) {
+    if (length === 0 || this.maxPayload < 1) return false;
+
+    const fullLength = this.totalPayloadLength + length;
+
+    if (fullLength <= this.maxPayload) {
+      this.totalPayloadLength = fullLength;
+      return false;
+    }
+
+    this.error(new Error('max payload size exceeded'), 1009);
+    return true;
+  }
+
+  /**
+   * Appends a fragment in the fragments array after checking that the sum of
+   * fragment lengths does not exceed `maxPayload`.
+   *
+   * @param {Buffer} fragment The fragment to add
+   * @return {Boolean} `true` if `maxPayload` is not exceeded, else `false`
+   * @private
+   */
+  pushFragment (fragment) {
+    if (fragment.length === 0) return true;
+
+    const totalLength = this.messageLength + fragment.length;
+
+    if (this.maxPayload < 1 || totalLength <= this.maxPayload) {
+      this.messageLength = totalLength;
+      this.fragments.push(fragment);
+      return true;
+    }
+
+    this.error(new Error('max payload size exceeded'), 1009);
+    return false;
+  }
+
+  /**
+   * Releases resources used by the receiver.
+   *
+   * @param {Function} cb Callback
+   * @public
+   */
+  cleanup (cb) {
+    this.dead = true;
+
+    if (!this.hadError && this.state === INFLATING) {
+      this.cleanupCallback = cb;
+    } else {
+      this.extensions = null;
+      this.fragments = null;
+      this.buffers = null;
+      this.mask = null;
+
+      this.cleanupCallback = null;
+      this.onmessage = null;
+      this.onclose = null;
+      this.onerror = null;
+      this.onping = null;
+      this.onpong = null;
+
+      if (cb) cb();
+    }
+  }
+}
+
+module.exports = Receiver;
diff --git a/lib/opal/cli_runners/node_modules/ws/lib/Sender.js b/lib/opal/cli_runners/node_modules/ws/lib/Sender.js
new file mode 100644
index 00000000..b36d6013
--- /dev/null
+++ b/lib/opal/cli_runners/node_modules/ws/lib/Sender.js
@@ -0,0 +1,438 @@
+/*!
+ * ws: a node.js websocket client
+ * Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
+ * MIT Licensed
+ */
+
+'use strict';
+
+const crypto = require('crypto');
+
+const PerMessageDeflate = require('./PerMessageDeflate');
+const bufferUtil = require('./BufferUtil');
+const ErrorCodes = require('./ErrorCodes');
+
+/**
+ * HyBi Sender implementation.
+ */
+class Sender {
+  /**
+   * Creates a Sender instance.
+   *
+   * @param {net.Socket} socket The connection socket
+   * @param {Object} extensions An object containing the negotiated extensions
+   */
+  constructor (socket, extensions) {
+    this.perMessageDeflate = (extensions || {})[PerMessageDeflate.extensionName];
+    this._socket = socket;
+
+    this.firstFragment = true;
+    this.compress = false;
+
+    this.processing = false;
+    this.bufferedBytes = 0;
+    this.queue = [];
+
+    this.onerror = null;
+  }
+
+  /**
+   * Sends a close message to the other peer.
+   *
+   * @param {(Number|undefined)} code The status code component of the body
+   * @param {String} data The message component of the body
+   * @param {Boolean} mask Specifies whether or not to mask the message
+   * @param {Function} cb Callback
+   * @public
+   */
+  close (code, data, mask, cb) {
+    if (code !== undefined && (typeof code !== 'number' || !ErrorCodes.isValidErrorCode(code))) {
+      throw new Error('first argument must be a valid error code number');
+    }
+
+    const buf = Buffer.allocUnsafe(2 + (data ? Buffer.byteLength(data) : 0));
+
+    buf.writeUInt16BE(code || 1000, 0, true);
+    if (buf.length > 2) buf.write(data, 2);
+
+    if (this.perMessageDeflate) {
+      this.enqueue([this.doClose, buf, mask, cb]);
+    } else {
+      this.doClose(buf, mask, cb);
+    }
+  }
+
+  /**
+   * Frames and sends a close message.
+   *
+   * @param {Buffer} data The message to send
+   * @param {Boolean} mask Specifies whether or not to mask `data`
+   * @param {Function} cb Callback
+   * @private
+   */
+  doClose (data, mask, cb) {
+    this.frameAndSend(data, {
+      readOnly: false,
+      opcode: 0x08,
+      rsv1: false,
+      fin: true,
+      mask
+    }, cb);
+
+    if (this.perMessageDeflate) this.continue();
+  }
+
+  /**
+   * Sends a ping message to the other peer.
+   *
+   * @param {*} data The message to send
+   * @param {Boolean} mask Specifies whether or not to mask `data`
+   * @public
+   */
+  ping (data, mask) {
+    var readOnly = true;
+
+    if (data && !Buffer.isBuffer(data)) {
+      if (data instanceof ArrayBuffer) {
+        data = Buffer.from(data);
+      } else if (ArrayBuffer.isView(data)) {
+        data = viewToBuffer(data);
+      } else {
+        data = Buffer.from(data);
+        readOnly = false;
+      }
+    }
+
+    if (this.perMessageDeflate) {
+      this.enqueue([this.doPing, data, mask, readOnly]);
+    } else {
+      this.doPing(data, mask, readOnly);
+    }
+  }
+
+  /**
+   * Frames and sends a ping message.
+   *
+   * @param {*} data The message to send
+   * @param {Boolean} mask Specifies whether or not to mask `data`
+   * @param {Boolean} readOnly Specifies whether `data` can be modified
+   * @private
+   */
+  doPing (data, mask, readOnly) {
+    this.frameAndSend(data, {
+      opcode: 0x09,
+      rsv1: false,
+      fin: true,
+      readOnly,
+      mask
+    });
+
+    if (this.perMessageDeflate) this.continue();
+  }
+
+  /**
+   * Sends a pong message to the other peer.
+   *
+   * @param {*} data The message to send
+   * @param {Boolean} mask Specifies whether or not to mask `data`
+   * @public
+   */
+  pong (data, mask) {
+    var readOnly = true;
+
+    if (data && !Buffer.isBuffer(data)) {
+      if (data instanceof ArrayBuffer) {
+        data = Buffer.from(data);
+      } else if (ArrayBuffer.isView(data)) {
+        data = viewToBuffer(data);
+      } else {
+        data = Buffer.from(data);
+        readOnly = false;
+      }
+    }
+
+    if (this.perMessageDeflate) {
+      this.enqueue([this.doPong, data, mask, readOnly]);
+    } else {
+      this.doPong(data, mask, readOnly);
+    }
+  }
+
+  /**
+   * Frames and sends a pong message.
+   *
+   * @param {*} data The message to send
+   * @param {Boolean} mask Specifies whether or not to mask `data`
+   * @param {Boolean} readOnly Specifies whether `data` can be modified
+   * @private
+   */
+  doPong (data, mask, readOnly) {
+    this.frameAndSend(data, {
+      opcode: 0x0a,
+      rsv1: false,
+      fin: true,
+      readOnly,
+      mask
+    });
+
+    if (this.perMessageDeflate) this.continue();
+  }
+
+  /**
+   * Sends a data message to the other peer.
+   *
+   * @param {*} data The message to send
+   * @param {Object} options Options object
+   * @param {Boolean} options.compress Specifies whether or not to compress `data`
+   * @param {Boolean} options.binary Specifies whether `data` is binary or text
+   * @param {Boolean} options.fin Specifies whether the fragment is the last one
+   * @param {Boolean} options.mask Specifies whether or not to mask `data`
+   * @param {Function} cb Callback
+   * @public
+   */
+  send (data, options, cb) {
+    var opcode = options.binary ? 2 : 1;
+    var rsv1 = options.compress;
+    var readOnly = true;
+
+    if (data && !Buffer.isBuffer(data)) {
+      if (data instanceof ArrayBuffer) {
+        data = Buffer.from(data);
+      } else if (ArrayBuffer.isView(data)) {
+        data = viewToBuffer(data);
+      } else {
+        data = Buffer.from(data);
+        readOnly = false;
+      }
+    }
+
+    if (this.firstFragment) {
+      this.firstFragment = false;
+      if (rsv1 && data && this.perMessageDeflate) {
+        rsv1 = data.length >= this.perMessageDeflate.threshold;
+      }
+      this.compress = rsv1;
+    } else {
+      rsv1 = false;
+      opcode = 0;
+    }
+
+    if (options.fin) this.firstFragment = true;
+
+    if (this.perMessageDeflate) {
+      this.enqueue([this.dispatch, data, {
+        compress: this.compress,
+        mask: options.mask,
+        fin: options.fin,
+        readOnly,
+        opcode,
+        rsv1
+      }, cb]);
+    } else {
+      this.frameAndSend(data, {
+        mask: options.mask,
+        fin: options.fin,
+        rsv1: false,
+        readOnly,
+        opcode
+      }, cb);
+    }
+  }
+
+  /**
+   * Dispatches a data message.
+   *
+   * @param {Buffer} data The message to send
+   * @param {Object} options Options object
+   * @param {Number} options.opcode The opcode
+   * @param {Boolean} options.readOnly Specifies whether `data` can be modified
+   * @param {Boolean} options.fin Specifies whether or not to set the FIN bit
+   * @param {Boolean} options.compress Specifies whether or not to compress `data`
+   * @param {Boolean} options.mask Specifies whether or not to mask `data`
+   * @param {Boolean} options.rsv1 Specifies whether or not to set the RSV1 bit
+   * @param {Function} cb Callback
+   * @private
+   */
+  dispatch (data, options, cb) {
+    if (!options.compress) {
+      this.frameAndSend(data, options, cb);
+      this.continue();
+      return;
+    }
+
+    this.perMessageDeflate.compress(data, options.fin, (err, buf) => {
+      if (err) {
+        if (cb) cb(err);
+        else this.onerror(err);
+        return;
+      }
+
+      options.readOnly = false;
+      this.frameAndSend(buf, options, cb);
+      this.continue();
+    });
+  }
+
+  /**
+   * Frames and sends a piece of data according to the HyBi WebSocket protocol.
+   *
+   * @param {Buffer} data The data to send
+   * @param {Object} options Options object
+   * @param {Number} options.opcode The opcode
+   * @param {Boolean} options.readOnly Specifies whether `data` can be modified
+   * @param {Boolean} options.fin Specifies whether or not to set the FIN bit
+   * @param {Boolean} options.mask Specifies whether or not to mask `data`
+   * @param {Boolean} options.rsv1 Specifies whether or not to set the RSV1 bit
+   * @param {Function} cb Callback
+   * @private
+   */
+  frameAndSend (data, options, cb) {
+    if (!data) {
+      const bytes = [options.opcode, 0];
+
+      if (options.fin) bytes[0] |= 0x80;
+      if (options.mask) {
+        bytes[1] |= 0x80;
+        bytes.push(0, 0, 0, 0);
+      }
+
+      sendFramedData(this, Buffer.from(bytes), null, cb);
+      return;
+    }
+
+    const mergeBuffers = data.length < 1024 || options.mask && options.readOnly;
+    var dataOffset = options.mask ? 6 : 2;
+    var payloadLength = data.length;
+
+    if (data.length >= 65536) {
+      dataOffset += 8;
+      payloadLength = 127;
+    } else if (data.length > 125) {
+      dataOffset += 2;
+      payloadLength = 126;
+    }
+
+    const outputBuffer = Buffer.allocUnsafe(
+      mergeBuffers ? data.length + dataOffset : dataOffset
+    );
+
+    outputBuffer[0] = options.fin ? options.opcode | 0x80 : options.opcode;
+    if (options.rsv1) outputBuffer[0] |= 0x40;
+
+    if (payloadLength === 126) {
+      outputBuffer.writeUInt16BE(data.length, 2, true);
+    } else if (payloadLength === 127) {
+      outputBuffer.writeUInt32BE(0, 2, true);
+      outputBuffer.writeUInt32BE(data.length, 6, true);
+    }
+
+    if (options.mask) {
+      const mask = getRandomMask();
+
+      outputBuffer[1] = payloadLength | 0x80;
+      outputBuffer[dataOffset - 4] = mask[0];
+      outputBuffer[dataOffset - 3] = mask[1];
+      outputBuffer[dataOffset - 2] = mask[2];
+      outputBuffer[dataOffset - 1] = mask[3];
+
+      if (mergeBuffers) {
+        bufferUtil.mask(data, mask, outputBuffer, dataOffset, data.length);
+      } else {
+        bufferUtil.mask(data, mask, data, 0, data.length);
+      }
+    } else {
+      outputBuffer[1] = payloadLength;
+      if (mergeBuffers) data.copy(outputBuffer, dataOffset);
+    }
+
+    sendFramedData(this, outputBuffer, mergeBuffers ? null : data, cb);
+  }
+
+  /**
+   * Executes a queued send operation.
+   *
+   * @private
+   */
+  dequeue () {
+    if (this.processing) return;
+
+    const params = this.queue.shift();
+    if (!params) return;
+
+    if (params[1]) this.bufferedBytes -= params[1].length;
+    this.processing = true;
+
+    params[0].apply(this, params.slice(1));
+  }
+
+  /**
+   * Signals the completion of a send operation.
+   *
+   * @private
+   */
+  continue () {
+    process.nextTick(() => {
+      this.processing = false;
+      this.dequeue();
+    });
+  }
+
+  /**
+   * Enqueues a send operation.
+   *
+   * @param {Array} params Send operation parameters.
+   * @private
+   */
+  enqueue (params) {
+    if (params[1]) this.bufferedBytes += params[1].length;
+    this.queue.push(params);
+    this.dequeue();
+  }
+}
+
+module.exports = Sender;
+
+/**
+ * Converts an `ArrayBuffer` view into a buffer.
+ *
+ * @param {(DataView|TypedArray)} view The view to convert
+ * @return {Buffer} Converted view
+ * @private
+ */
+function viewToBuffer (view) {
+  const buf = Buffer.from(view.buffer);
+
+  if (view.byteLength !== view.buffer.byteLength) {
+    return buf.slice(view.byteOffset, view.byteOffset + view.byteLength);
+  }
+
+  return buf;
+}
+
+/**
+ * Generates a random mask.
+ *
+ * @return {Buffer} The mask
+ * @private
+ */
+function getRandomMask () {
+  return crypto.randomBytes(4);
+}
+
+/**
+ * Sends a frame.
+ *
+ * @param {Sender} sender Sender instance
+ * @param {Buffer} outputBuffer The data to send
+ * @param {Buffer} data Additional data to send if frame is split into two buffers
+ * @param {Function} cb Callback
+ * @private
+ */
+function sendFramedData (sender, outputBuffer, data, cb) {
+  if (data) {
+    sender._socket.write(outputBuffer);
+    sender._socket.write(data, cb);
+  } else {
+    sender._socket.write(outputBuffer, cb);
+  }
+}
diff --git a/lib/opal/cli_runners/node_modules/ws/lib/Validation.fallback.js b/lib/opal/cli_runners/node_modules/ws/lib/Validation.fallback.js
new file mode 100644
index 00000000..60663149
--- /dev/null
+++ b/lib/opal/cli_runners/node_modules/ws/lib/Validation.fallback.js
@@ -0,0 +1,9 @@
+/*!
+ * ws: a node.js websocket client
+ * Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
+ * MIT Licensed
+ */
+
+'use strict';
+
+module.exports = () => true;
diff --git a/lib/opal/cli_runners/node_modules/ws/lib/Validation.js b/lib/opal/cli_runners/node_modules/ws/lib/Validation.js
new file mode 100644
index 00000000..7fa5f508
--- /dev/null
+++ b/lib/opal/cli_runners/node_modules/ws/lib/Validation.js
@@ -0,0 +1,17 @@
+/*!
+ * ws: a node.js websocket client
+ * Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
+ * MIT Licensed
+ */
+
+'use strict';
+
+try {
+  const isValidUTF8 = require('utf-8-validate');
+
+  module.exports = typeof isValidUTF8 === 'object'
+    ? isValidUTF8.Validation.isValidUTF8  // utf-8-validate@<3.0.0
+    : isValidUTF8;
+} catch (e) {
+  module.exports = require('./Validation.fallback');
+}
diff --git a/lib/opal/cli_runners/node_modules/ws/lib/WebSocket.js b/lib/opal/cli_runners/node_modules/ws/lib/WebSocket.js
new file mode 100644
index 00000000..a655a134
--- /dev/null
+++ b/lib/opal/cli_runners/node_modules/ws/lib/WebSocket.js
@@ -0,0 +1,705 @@
+/*!
+ * ws: a node.js websocket client
+ * Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
+ * MIT Licensed
+ */
+
+'use strict';
+
+const EventEmitter = require('events');
+const crypto = require('crypto');
+const Ultron = require('ultron');
+const https = require('https');
+const http = require('http');
+const url = require('url');
+
+const PerMessageDeflate = require('./PerMessageDeflate');
+const EventTarget = require('./EventTarget');
+const Extensions = require('./Extensions');
+const Receiver = require('./Receiver');
+const Sender = require('./Sender');
+
+const GUID = '258EAFA5-E914-47DA-95CA-C5AB0DC85B11';
+const closeTimeout = 30 * 1000; // Allow 30 seconds to terminate the connection cleanly.
+const protocolVersion = 13;
+const noop = () => {};
+
+/**
+ * Class representing a WebSocket.
+ *
+ * @extends EventEmitter
+ */
+class WebSocket extends EventEmitter {
+  /**
+   * Create a new `WebSocket`.
+   *
+   * @param {String} address The URL to which to connect
+   * @param {(String|String[])} protocols The subprotocols
+   * @param {Object} options Connection options
+   */
+  constructor (address, protocols, options) {
+    super();
+
+    if (typeof protocols === 'object' && !Array.isArray(protocols)) {
+      options = protocols;
+      protocols = null;
+    }
+
+    if (typeof protocols === 'string') protocols = [protocols];
+    if (!Array.isArray(protocols)) protocols = [];
+
+    this.readyState = WebSocket.CONNECTING;
+    this.bytesReceived = 0;
+    this.extensions = {};
+    this.protocol = '';
+
+    this._finalize = this.finalize.bind(this);
+    this._binaryType = 'nodebuffer';
+    this._finalizeCalled = false;
+    this._closeMessage = null;
+    this._closeTimer = null;
+    this._closeCode = null;
+    this._receiver = null;
+    this._sender = null;
+    this._socket = null;
+    this._ultron = null;
+
+    if (Array.isArray(address)) {
+      initAsServerClient.call(this, address[0], address[1], address[2], options);
+    } else {
+      initAsClient.call(this, address, protocols, options);
+    }
+  }
+
+  get CONNECTING () { return WebSocket.CONNECTING; }
+  get CLOSING () { return WebSocket.CLOSING; }
+  get CLOSED () { return WebSocket.CLOSED; }
+  get OPEN () { return WebSocket.OPEN; }
+
+  /**
+   * @type {Number}
+   */
+  get bufferedAmount () {
+    var amount = 0;
+
+    if (this._socket) {
+      amount = this._socket.bufferSize + this._sender.bufferedBytes;
+    }
+    return amount;
+  }
+
+  /**
+   * This deviates from the WHATWG interface since ws doesn't support the required
+   * default "blob" type (instead we define a custom "nodebuffer" type).
+   *
+   * @type {String}
+   */
+  get binaryType () {
+    return this._binaryType;
+  }
+
+  set binaryType (type) {
+    if (type === 'arraybuffer' || type === 'nodebuffer') {
+      this._binaryType = type;
+    } else {
+      throw new SyntaxError('unsupported binaryType: must be either "nodebuffer" or "arraybuffer"');
+    }
+  }
+
+  /**
+   * Set up the socket and the internal resources.
+   *
+   * @param {net.Socket} socket The network socket between the server and client
+   * @param {Buffer} head The first packet of the upgraded stream
+   * @private
+   */
+  setSocket (socket, head) {
+    socket.setTimeout(0);
+    socket.setNoDelay();
+
+    this._receiver = new Receiver(this.extensions, this.maxPayload);
+    this._sender = new Sender(socket, this.extensions);
+    this._ultron = new Ultron(socket);
+    this._socket = socket;
+
+    // socket cleanup handlers
+    this._ultron.on('close', this._finalize);
+    this._ultron.on('error', this._finalize);
+    this._ultron.on('end', this._finalize);
+
+    // ensure that the head is added to the receiver
+    if (head && head.length > 0) {
+      socket.unshift(head);
+      head = null;
+    }
+
+    // subsequent packets are pushed to the receiver
+    this._ultron.on('data', (data) => {
+      this.bytesReceived += data.length;
+      this._receiver.add(data);
+    });
+
+    // receiver event handlers
+    this._receiver.onmessage = (data, flags) => this.emit('message', data, flags);
+    this._receiver.onping = (data, flags) => {
+      this.pong(data, !this._isServer, true);
+      this.emit('ping', data, flags);
+    };
+    this._receiver.onpong = (data, flags) => this.emit('pong', data, flags);
+    this._receiver.onclose = (code, reason) => {
+      this._closeMessage = reason;
+      this._closeCode = code;
+      this.close(code, reason);
+    };
+    this._receiver.onerror = (error, code) => {
+      // close the connection when the receiver reports a HyBi error code
+      this.close(code, '');
+      this.emit('error', error);
+    };
+
+    // sender event handlers
+    this._sender.onerror = (error) => {
+      this.close(1002, '');
+      this.emit('error', error);
+    };
+
+    this.readyState = WebSocket.OPEN;
+    this.emit('open');
+  }
+
+  /**
+   * Clean up and release internal resources.
+   *
+   * @param {(Boolean|Error)} Indicates whether or not an error occurred
+   * @private
+   */
+  finalize (error) {
+    if (this._finalizeCalled) return;
+
+    this.readyState = WebSocket.CLOSING;
+    this._finalizeCalled = true;
+
+    clearTimeout(this._closeTimer);
+    this._closeTimer = null;
+
+    //
+    // If the connection was closed abnormally (with an error), or if the close
+    // control frame was malformed or not received then the close code must be
+    // 1006.
+    //
+    if (error) this._closeCode = 1006;
+
+    if (this._socket) {
+      this._ultron.destroy();
+      this._socket.on('error', function onerror () {
+        this.destroy();
+      });
+
+      if (!error) this._socket.end();
+      else this._socket.destroy();
+
+      this._socket = null;
+      this._ultron = null;
+    }
+
+    if (this._sender) {
+      this._sender = this._sender.onerror = null;
+    }
+
+    if (this._receiver) {
+      this._receiver.cleanup(() => this.emitClose());
+      this._receiver = null;
+    } else {
+      this.emitClose();
+    }
+  }
+
+  /**
+   * Emit the `close` event.
+   *
+   * @private
+   */
+  emitClose () {
+    this.readyState = WebSocket.CLOSED;
+    this.emit('close', this._closeCode || 1006, this._closeMessage || '');
+
+    if (this.extensions[PerMessageDeflate.extensionName]) {
+      this.extensions[PerMessageDeflate.extensionName].cleanup();
+    }
+
+    this.extensions = null;
+
+    this.removeAllListeners();
+    this.on('error', noop); // Catch all errors after this.
+  }
+
+  /**
+   * Pause the socket stream.
+   *
+   * @public
+   */
+  pause () {
+    if (this.readyState !== WebSocket.OPEN) throw new Error('not opened');
+
+    this._socket.pause();
+  }
+
+  /**
+   * Resume the socket stream
+   *
+   * @public
+   */
+  resume () {
+    if (this.readyState !== WebSocket.OPEN) throw new Error('not opened');
+
+    this._socket.resume();
+  }
+
+  /**
+   * Start a closing handshake.
+   *
+   * @param {Number} code Status code explaining why the connection is closing
+   * @param {String} data A string explaining why the connection is closing
+   * @public
+   */
+  close (code, data) {
+    if (this.readyState === WebSocket.CLOSED) return;
+    if (this.readyState === WebSocket.CONNECTING) {
+      if (this._req && !this._req.aborted) {
+        this._req.abort();
+        this.emit('error', new Error('closed before the connection is established'));
+        this.finalize(true);
+      }
+      return;
+    }
+
+    if (this.readyState === WebSocket.CLOSING) {
+      if (this._closeCode) this.terminate();
+      return;
+    }
+
+    this.readyState = WebSocket.CLOSING;
+    this._sender.close(code, data, !this._isServer, (err) => {
+      if (err) this.emit('error', err);
+
+      if (this._closeCode) {
+        this.terminate();
+      } else {
+        //
+        // Ensure that the connection is cleaned up even when the closing
+        // handshake fails.
+        //
+        clearTimeout(this._closeTimer);
+        this._closeTimer = setTimeout(this._finalize, closeTimeout, true);
+      }
+    });
+  }
+
+  /**
+   * Send a ping message.
+   *
+   * @param {*} data The message to send
+   * @param {Boolean} mask Indicates whether or not to mask `data`
+   * @param {Boolean} failSilently Indicates whether or not to throw if `readyState` isn't `OPEN`
+   * @public
+   */
+  ping (data, mask, failSilently) {
+    if (this.readyState !== WebSocket.OPEN) {
+      if (failSilently) return;
+      throw new Error('not opened');
+    }
+
+    if (typeof data === 'number') data = data.toString();
+    if (mask === undefined) mask = !this._isServer;
+    this._sender.ping(data, mask);
+  }
+
+  /**
+   * Send a pong message.
+   *
+   * @param {*} data The message to send
+   * @param {Boolean} mask Indicates whether or not to mask `data`
+   * @param {Boolean} failSilently Indicates whether or not to throw if `readyState` isn't `OPEN`
+   * @public
+   */
+  pong (data, mask, failSilently) {
+    if (this.readyState !== WebSocket.OPEN) {
+      if (failSilently) return;
+      throw new Error('not opened');
+    }
+
+    if (typeof data === 'number') data = data.toString();
+    if (mask === undefined) mask = !this._isServer;
+    this._sender.pong(data, mask);
+  }
+
+  /**
+   * Send a data message.
+   *
+   * @param {*} data The message to send
+   * @param {Object} options Options object
+   * @param {Boolean} options.compress Specifies whether or not to compress `data`
+   * @param {Boolean} options.binary Specifies whether `data` is binary or text
+   * @param {Boolean} options.fin Specifies whether the fragment is the last one
+   * @param {Boolean} options.mask Specifies whether or not to mask `data`
+   * @param {Function} cb Callback which is executed when data is written out
+   * @public
+   */
+  send (data, options, cb) {
+    if (typeof options === 'function') {
+      cb = options;
+      options = {};
+    }
+
+    if (this.readyState !== WebSocket.OPEN) {
+      if (cb) cb(new Error('not opened'));
+      else throw new Error('not opened');
+      return;
+    }
+
+    if (typeof data === 'number') data = data.toString();
+    else if (!data) data = '';
+
+    const opts = Object.assign({
+      fin: true,
+      binary: typeof data !== 'string',
+      mask: !this._isServer,
+      compress: true
+    }, options);
+
+    if (!this.extensions[PerMessageDeflate.extensionName]) {
+      opts.compress = false;
+    }
+
+    this._sender.send(data, opts, cb);
+  }
+
+  /**
+   * Half-close the socket sending a FIN packet.
+   *
+   * @public
+   */
+  terminate () {
+    if (this.readyState === WebSocket.CLOSED) return;
+    if (this.readyState === WebSocket.CONNECTING) {
+      if (this._req && !this._req.aborted) {
+        this._req.abort();
+        this.emit('error', new Error('closed before the connection is established'));
+        this.finalize(true);
+      }
+      return;
+    }
+
+    if (this._socket) {
+      this.readyState = WebSocket.CLOSING;
+      this._socket.end();
+
+      //
+      // Add a timeout to ensure that the connection is completely cleaned up
+      // within 30 seconds, even if the other peer does not send a FIN packet.
+      //
+      clearTimeout(this._closeTimer);
+      this._closeTimer = setTimeout(this._finalize, closeTimeout, true);
+    }
+  }
+}
+
+WebSocket.CONNECTING = 0;
+WebSocket.OPEN = 1;
+WebSocket.CLOSING = 2;
+WebSocket.CLOSED = 3;
+
+//
+// Add the `onopen`, `onerror`, `onclose`, and `onmessage` attributes.
+// See https://html.spec.whatwg.org/multipage/comms.html#the-websocket-interface
+//
+['open', 'error', 'close', 'message'].forEach((method) => {
+  Object.defineProperty(WebSocket.prototype, `on${method}`, {
+    /**
+     * Return the listener of the event.
+     *
+     * @return {(Function|undefined)} The event listener or `undefined`
+     * @public
+     */
+    get () {
+      const listeners = this.listeners(method);
+      for (var i = 0; i < listeners.length; i++) {
+        if (listeners[i]._listener) return listeners[i]._listener;
+      }
+    },
+    /**
+     * Add a listener for the event.
+     *
+     * @param {Function} listener The listener to add
+     * @public
+     */
+    set (listener) {
+      const listeners = this.listeners(method);
+      for (var i = 0; i < listeners.length; i++) {
+        //
+        // Remove only the listeners added via `addEventListener`.
+        //
+        if (listeners[i]._listener) this.removeListener(method, listeners[i]);
+      }
+      this.addEventListener(method, listener);
+    }
+  });
+});
+
+WebSocket.prototype.addEventListener = EventTarget.addEventListener;
+WebSocket.prototype.removeEventListener = EventTarget.removeEventListener;
+
+module.exports = WebSocket;
+
+/**
+ * Initialize a WebSocket server client.
+ *
+ * @param {http.IncomingMessage} req The request object
+ * @param {net.Socket} socket The network socket between the server and client
+ * @param {Buffer} head The first packet of the upgraded stream
+ * @param {Object} options WebSocket attributes
+ * @param {Number} options.protocolVersion The WebSocket protocol version
+ * @param {Object} options.extensions The negotiated extensions
+ * @param {Number} options.maxPayload The maximum allowed message size
+ * @param {String} options.protocol The chosen subprotocol
+ * @private
+ */
+function initAsServerClient (req, socket, head, options) {
+  this.protocolVersion = options.protocolVersion;
+  this.extensions = options.extensions;
+  this.maxPayload = options.maxPayload;
+  this.protocol = options.protocol;
+
+  this.upgradeReq = req;
+  this._isServer = true;
+
+  this.setSocket(socket, head);
+}
+
+/**
+ * Initialize a WebSocket client.
+ *
+ * @param {String} address The URL to which to connect
+ * @param {String[]} protocols The list of subprotocols
+ * @param {Object} options Connection options
+ * @param {String} options.protocol Value of the `Sec-WebSocket-Protocol` header
+ * @param {(Boolean|Object)} options.perMessageDeflate Enable/disable permessage-deflate
+ * @param {String} options.localAddress Local interface to bind for network connections
+ * @param {Number} options.protocolVersion Value of the `Sec-WebSocket-Version` header
+ * @param {Object} options.headers An object containing request headers
+ * @param {String} options.origin Value of the `Origin` or `Sec-WebSocket-Origin` header
+ * @param {http.Agent} options.agent Use the specified Agent
+ * @param {String} options.host Value of the `Host` header
+ * @param {Number} options.family IP address family to use during hostname lookup (4 or 6).
+ * @param {Function} options.checkServerIdentity A function to validate the server hostname
+ * @param {Boolean} options.rejectUnauthorized Verify or not the server certificate
+ * @param {String} options.passphrase The passphrase for the private key or pfx
+ * @param {String} options.ciphers The ciphers to use or exclude
+ * @param {(String|String[]|Buffer|Buffer[])} options.cert The certificate key
+ * @param {(String|String[]|Buffer|Buffer[])} options.key The private key
+ * @param {(String|Buffer)} options.pfx The private key, certificate, and CA certs
+ * @param {(String|String[]|Buffer|Buffer[])} options.ca Trusted certificates
+ * @private
+ */
+function initAsClient (address, protocols, options) {
+  options = Object.assign({
+    protocol: protocols.join(','),
+    perMessageDeflate: true,
+    localAddress: null,
+    protocolVersion,
+    headers: null,
+    origin: null,
+    agent: null,
+    host: null,
+    family: null,
+
+    //
+    // SSL options.
+    //
+    checkServerIdentity: null,
+    rejectUnauthorized: null,
+    passphrase: null,
+    ciphers: null,
+    cert: null,
+    key: null,
+    pfx: null,
+    ca: null
+  }, options);
+
+  if (options.protocolVersion !== 8 && options.protocolVersion !== 13) {
+    throw new Error('unsupported protocol version');
+  }
+
+  this.protocolVersion = options.protocolVersion;
+  this._isServer = false;
+  this.url = address;
+
+  const serverUrl = url.parse(address);
+  const isUnixSocket = serverUrl.protocol === 'ws+unix:';
+
+  if (!serverUrl.host && !isUnixSocket) throw new Error('invalid url');
+
+  const isSecure = serverUrl.protocol === 'wss:' || serverUrl.protocol === 'https:';
+  const key = crypto.randomBytes(16).toString('base64');
+  const port = serverUrl.port || (isSecure ? 443 : 80);
+  const httpObj = isSecure ? https : http;
+
+  //
+  // Prepare extensions.
+  //
+  const extensionsOffer = {};
+  var perMessageDeflate;
+
+  if (options.perMessageDeflate) {
+    perMessageDeflate = new PerMessageDeflate(
+      options.perMessageDeflate !== true ? options.perMessageDeflate : {},
+      false
+    );
+    extensionsOffer[PerMessageDeflate.extensionName] = perMessageDeflate.offer();
+  }
+
+  const requestOptions = {
+    host: serverUrl.hostname,
+    port,
+    path: '/',
+    headers: {
+      'Sec-WebSocket-Version': options.protocolVersion,
+      'Sec-WebSocket-Key': key,
+      'Connection': 'Upgrade',
+      'Upgrade': 'websocket'
+    }
+  };
+
+  if (options.headers) Object.assign(requestOptions.headers, options.headers);
+  if (Object.keys(extensionsOffer).length) {
+    requestOptions.headers['Sec-WebSocket-Extensions'] = Extensions.format(extensionsOffer);
+  }
+  if (options.protocol) {
+    requestOptions.headers['Sec-WebSocket-Protocol'] = options.protocol;
+  }
+  if (options.origin) {
+    if (options.protocolVersion < 13) {
+      requestOptions.headers['Sec-WebSocket-Origin'] = options.origin;
+    } else {
+      requestOptions.headers.Origin = options.origin;
+    }
+  }
+  if (options.host) requestOptions.headers.Host = options.host;
+  if (options.family) requestOptions.family = options.family;
+
+  if (options.localAddress) requestOptions.localAddress = options.localAddress;
+  if (isUnixSocket) requestOptions.socketPath = serverUrl.pathname;
+  if (serverUrl.auth) requestOptions.auth = serverUrl.auth;
+
+  //
+  // Make sure that path starts with `/`.
+  //
+  if (serverUrl.path) {
+    if (serverUrl.path.charAt(0) !== '/') {
+      requestOptions.path = `/${serverUrl.path}`;
+    } else {
+      requestOptions.path = serverUrl.path;
+    }
+  }
+
+  var agent = options.agent;
+
+  //
+  // A custom agent is required for these options.
+  //
+  if (
+    options.rejectUnauthorized != null ||
+    options.checkServerIdentity ||
+    options.passphrase ||
+    options.ciphers ||
+    options.cert ||
+    options.key ||
+    options.pfx ||
+    options.ca
+  ) {
+    if (options.passphrase) requestOptions.passphrase = options.passphrase;
+    if (options.ciphers) requestOptions.ciphers = options.ciphers;
+    if (options.cert) requestOptions.cert = options.cert;
+    if (options.key) requestOptions.key = options.key;
+    if (options.pfx) requestOptions.pfx = options.pfx;
+    if (options.ca) requestOptions.ca = options.ca;
+    if (options.checkServerIdentity) {
+      requestOptions.checkServerIdentity = options.checkServerIdentity;
+    }
+    if (options.rejectUnauthorized != null) {
+      requestOptions.rejectUnauthorized = options.rejectUnauthorized;
+    }
+
+    if (!agent) agent = new httpObj.Agent(requestOptions);
+  }
+
+  if (agent) requestOptions.agent = agent;
+
+  this._req = httpObj.get(requestOptions);
+
+  this._req.on('error', (error) => {
+    if (this._req.aborted) return;
+
+    this._req = null;
+    this.emit('error', error);
+    this.finalize(true);
+  });
+
+  this._req.on('response', (res) => {
+    if (!this.emit('unexpected-response', this._req, res)) {
+      this._req.abort();
+      this.emit('error', new Error(`unexpected server response (${res.statusCode})`));
+      this.finalize(true);
+    }
+  });
+
+  this._req.on('upgrade', (res, socket, head) => {
+    this._req = null;
+
+    const digest = crypto.createHash('sha1')
+      .update(key + GUID, 'binary')
+      .digest('base64');
+
+    if (res.headers['sec-websocket-accept'] !== digest) {
+      socket.destroy();
+      this.emit('error', new Error('invalid server key'));
+      return this.finalize(true);
+    }
+
+    const serverProt = res.headers['sec-websocket-protocol'];
+    const protList = (options.protocol || '').split(/, */);
+    var protError;
+
+    if (!options.protocol && serverProt) {
+      protError = 'server sent a subprotocol even though none requested';
+    } else if (options.protocol && !serverProt) {
+      protError = 'server sent no subprotocol even though requested';
+    } else if (serverProt && protList.indexOf(serverProt) === -1) {
+      protError = 'server responded with an invalid protocol';
+    }
+
+    if (protError) {
+      socket.destroy();
+      this.emit('error', new Error(protError));
+      return this.finalize(true);
+    }
+
+    if (serverProt) this.protocol = serverProt;
+
+    const serverExtensions = Extensions.parse(res.headers['sec-websocket-extensions']);
+
+    if (perMessageDeflate && serverExtensions[PerMessageDeflate.extensionName]) {
+      try {
+        perMessageDeflate.accept(serverExtensions[PerMessageDeflate.extensionName]);
+      } catch (err) {
+        socket.destroy();
+        this.emit('error', new Error('invalid extension parameter'));
+        return this.finalize(true);
+      }
+
+      this.extensions[PerMessageDeflate.extensionName] = perMessageDeflate;
+    }
+
+    this.setSocket(socket, head);
+  });
+}
diff --git a/lib/opal/cli_runners/node_modules/ws/lib/WebSocketServer.js b/lib/opal/cli_runners/node_modules/ws/lib/WebSocketServer.js
new file mode 100644
index 00000000..4a0bd4e9
--- /dev/null
+++ b/lib/opal/cli_runners/node_modules/ws/lib/WebSocketServer.js
@@ -0,0 +1,336 @@
+/*!
+ * ws: a node.js websocket client
+ * Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
+ * MIT Licensed
+ */
+
+'use strict';
+
+const EventEmitter = require('events');
+const crypto = require('crypto');
+const Ultron = require('ultron');
+const http = require('http');
+const url = require('url');
+
+const PerMessageDeflate = require('./PerMessageDeflate');
+const Extensions = require('./Extensions');
+const WebSocket = require('./WebSocket');
+
+const GUID = '258EAFA5-E914-47DA-95CA-C5AB0DC85B11';
+
+/**
+ * Class representing a WebSocket server.
+ *
+ * @extends EventEmitter
+ */
+class WebSocketServer extends EventEmitter {
+  /**
+   * Create a `WebSocketServer` instance.
+   *
+   * @param {Object} options Configuration options
+   * @param {String} options.host The hostname where to bind the server
+   * @param {Number} options.port The port where to bind the server
+   * @param {http.Server} options.server A pre-created HTTP/S server to use
+   * @param {Function} options.verifyClient An hook to reject connections
+   * @param {Function} options.handleProtocols An hook to handle protocols
+   * @param {String} options.path Accept only connections matching this path
+   * @param {Boolean} options.noServer Enable no server mode
+   * @param {Boolean} options.clientTracking Specifies whether or not to track clients
+   * @param {(Boolean|Object)} options.perMessageDeflate Enable/disable permessage-deflate
+   * @param {Number} options.maxPayload The maximum allowed message size
+   * @param {Function} callback A listener for the `listening` event
+   */
+  constructor (options, callback) {
+    super();
+
+    options = Object.assign({
+      maxPayload: 100 * 1024 * 1024,
+      perMessageDeflate: true,
+      handleProtocols: null,
+      clientTracking: true,
+      verifyClient: null,
+      noServer: false,
+      backlog: null, // use default (511 as implemented in net.js)
+      server: null,
+      host: null,
+      path: null,
+      port: null
+    }, options);
+
+    if (options.port == null && !options.server && !options.noServer) {
+      throw new TypeError('missing or invalid options');
+    }
+
+    if (options.port != null) {
+      this._server = http.createServer((req, res) => {
+        const body = http.STATUS_CODES[426];
+
+        res.writeHead(426, {
+          'Content-Length': body.length,
+          'Content-Type': 'text/plain'
+        });
+        res.end(body);
+      });
+      this._server.allowHalfOpen = false;
+      this._server.listen(options.port, options.host, options.backlog, callback);
+    } else if (options.server) {
+      this._server = options.server;
+    }
+
+    if (this._server) {
+      this._ultron = new Ultron(this._server);
+      this._ultron.on('listening', () => this.emit('listening'));
+      this._ultron.on('error', (err) => this.emit('error', err));
+      this._ultron.on('upgrade', (req, socket, head) => {
+        this.handleUpgrade(req, socket, head, (client) => {
+          this.emit(`connection${req.url}`, client);
+          this.emit('connection', client);
+        });
+      });
+    }
+
+    if (options.clientTracking) this.clients = new Set();
+    this.options = options;
+    this.path = options.path;
+  }
+
+  /**
+   * Close the server.
+   *
+   * @param {Function} cb Callback
+   * @public
+   */
+  close (cb) {
+    //
+    // Terminate all associated clients.
+    //
+    if (this.clients) {
+      for (const client of this.clients) client.terminate();
+    }
+
+    const server = this._server;
+
+    if (server) {
+      this._ultron.destroy();
+      this._ultron = this._server = null;
+
+      //
+      // Close the http server if it was internally created.
+      //
+      if (this.options.port != null) return server.close(cb);
+    }
+
+    if (cb) cb();
+  }
+
+  /**
+   * See if a given request should be handled by this server instance.
+   *
+   * @param {http.IncomingMessage} req Request object to inspect
+   * @return {Boolean} `true` if the request is valid, else `false`
+   * @public
+   */
+  shouldHandle (req) {
+    if (this.options.path && url.parse(req.url).pathname !== this.options.path) {
+      return false;
+    }
+
+    return true;
+  }
+
+  /**
+   * Handle a HTTP Upgrade request.
+   *
+   * @param {http.IncomingMessage} req The request object
+   * @param {net.Socket} socket The network socket between the server and client
+   * @param {Buffer} head The first packet of the upgraded stream
+   * @param {Function} cb Callback
+   * @public
+   */
+  handleUpgrade (req, socket, head, cb) {
+    socket.on('error', socketError);
+
+    const version = +req.headers['sec-websocket-version'];
+
+    if (
+      !this.shouldHandle(req) ||
+      !req.headers.upgrade ||
+      req.headers.upgrade.toLowerCase() !== 'websocket' ||
+      !req.headers['sec-websocket-key'] ||
+      version !== 8 && version !== 13
+    ) {
+      return abortConnection(socket, 400);
+    }
+
+    var protocol = (req.headers['sec-websocket-protocol'] || '').split(/, */);
+
+    //
+    // Optionally call external protocol selection handler.
+    //
+    if (this.options.handleProtocols) {
+      protocol = this.options.handleProtocols(protocol);
+      if (protocol === false) return abortConnection(socket, 401);
+    } else {
+      protocol = protocol[0];
+    }
+
+    //
+    // Optionally call external client verification handler.
+    //
+    if (this.options.verifyClient) {
+      const info = {
+        origin: req.headers[`${version === 8 ? 'sec-websocket-origin' : 'origin'}`],
+        secure: !!(req.connection.authorized || req.connection.encrypted),
+        req
+      };
+
+      if (this.options.verifyClient.length === 2) {
+        this.options.verifyClient(info, (verified, code, message) => {
+          if (!verified) return abortConnection(socket, code || 401, message);
+
+          this.completeUpgrade(protocol, version, req, socket, head, cb);
+        });
+        return;
+      } else if (!this.options.verifyClient(info)) {
+        return abortConnection(socket, 401);
+      }
+    }
+
+    this.completeUpgrade(protocol, version, req, socket, head, cb);
+  }
+
+  /**
+   * Upgrade the connection to WebSocket.
+   *
+   * @param {String} protocol The chosen subprotocol
+   * @param {Number} version The WebSocket protocol version
+   * @param {http.IncomingMessage} req The request object
+   * @param {net.Socket} socket The network socket between the server and client
+   * @param {Buffer} head The first packet of the upgraded stream
+   * @param {Function} cb Callback
+   * @private
+   */
+  completeUpgrade (protocol, version, req, socket, head, cb) {
+    //
+    // Destroy the socket if the client has already sent a FIN packet.
+    //
+    if (!socket.readable || !socket.writable) return socket.destroy();
+
+    const key = crypto.createHash('sha1')
+      .update(req.headers['sec-websocket-key'] + GUID, 'binary')
+      .digest('base64');
+
+    const headers = [
+      'HTTP/1.1 101 Switching Protocols',
+      'Upgrade: websocket',
+      'Connection: Upgrade',
+      `Sec-WebSocket-Accept: ${key}`
+    ];
+
+    if (protocol) headers.push(`Sec-WebSocket-Protocol: ${protocol}`);
+
+    const offer = Extensions.parse(req.headers['sec-websocket-extensions']);
+    var extensions;
+
+    try {
+      extensions = acceptExtensions(this.options, offer);
+    } catch (err) {
+      return abortConnection(socket, 400);
+    }
+
+    const props = Object.keys(extensions);
+
+    if (props.length) {
+      const serverExtensions = props.reduce((obj, key) => {
+        obj[key] = [extensions[key].params];
+        return obj;
+      }, {});
+
+      headers.push(`Sec-WebSocket-Extensions: ${Extensions.format(serverExtensions)}`);
+    }
+
+    //
+    // Allow external modification/inspection of handshake headers.
+    //
+    this.emit('headers', headers);
+
+    socket.write(headers.concat('', '').join('\r\n'));
+
+    const client = new WebSocket([req, socket, head], {
+      maxPayload: this.options.maxPayload,
+      protocolVersion: version,
+      extensions,
+      protocol
+    });
+
+    if (this.clients) {
+      this.clients.add(client);
+      client.on('close', () => this.clients.delete(client));
+    }
+
+    socket.removeListener('error', socketError);
+    cb(client);
+  }
+}
+
+module.exports = WebSocketServer;
+
+/**
+ * Handle premature socket errors.
+ *
+ * @private
+ */
+function socketError () {
+  this.destroy();
+}
+
+/**
+ * Accept WebSocket extensions.
+ *
+ * @param {Object} options The `WebSocketServer` configuration options
+ * @param {Object} offer The parsed value of the `sec-websocket-extensions` header
+ * @return {Object} Accepted extensions
+ * @private
+ */
+function acceptExtensions (options, offer) {
+  const pmd = options.perMessageDeflate;
+  const extensions = {};
+
+  if (pmd && offer[PerMessageDeflate.extensionName]) {
+    const perMessageDeflate = new PerMessageDeflate(
+      pmd !== true ? pmd : {},
+      true,
+      options.maxPayload
+    );
+
+    perMessageDeflate.accept(offer[PerMessageDeflate.extensionName]);
+    extensions[PerMessageDeflate.extensionName] = perMessageDeflate;
+  }
+
+  return extensions;
+}
+
+/**
+ * Close the connection when preconditions are not fulfilled.
+ *
+ * @param {net.Socket} socket The socket of the upgrade request
+ * @param {Number} code The HTTP response status code
+ * @param {String} [message] The HTTP response body
+ * @private
+ */
+function abortConnection (socket, code, message) {
+  if (socket.writable) {
+    message = message || http.STATUS_CODES[code];
+    socket.write(
+      `HTTP/1.1 ${code} ${http.STATUS_CODES[code]}\r\n` +
+      'Connection: close\r\n' +
+      'Content-type: text/html\r\n' +
+      `Content-Length: ${Buffer.byteLength(message)}\r\n` +
+      '\r\n' +
+      message
+    );
+  }
+
+  socket.removeListener('error', socketError);
+  socket.destroy();
+}
diff --git a/lib/opal/cli_runners/node_modules/ws/package.json b/lib/opal/cli_runners/node_modules/ws/package.json
new file mode 100644
index 00000000..2073f9ac
--- /dev/null
+++ b/lib/opal/cli_runners/node_modules/ws/package.json
@@ -0,0 +1,122 @@
+{
+  "_args": [
+    [
+      {
+        "raw": "ws@2.0.x",
+        "scope": null,
+        "escapedName": "ws",
+        "name": "ws",
+        "rawSpec": "2.0.x",
+        "spec": ">=2.0.0 <2.1.0",
+        "type": "range"
+      },
+      "/Users/ilya/Work/opal/lib/opal/cli_runners/node_modules/chrome-remote-interface"
+    ]
+  ],
+  "_from": "ws@>=2.0.0 <2.1.0",
+  "_id": "ws@2.0.3",
+  "_inCache": true,
+  "_location": "/ws",
+  "_nodeVersion": "7.5.0",
+  "_npmOperationalInternal": {
+    "host": "packages-18-east.internal.npmjs.com",
+    "tmp": "tmp/ws-2.0.3.tgz_1486561489812_0.7949141394346952"
+  },
+  "_npmUser": {
+    "name": "lpinca",
+    "email": "luigipinca@gmail.com"
+  },
+  "_npmVersion": "4.1.2",
+  "_phantomChildren": {},
+  "_requested": {
+    "raw": "ws@2.0.x",
+    "scope": null,
+    "escapedName": "ws",
+    "name": "ws",
+    "rawSpec": "2.0.x",
+    "spec": ">=2.0.0 <2.1.0",
+    "type": "range"
+  },
+  "_requiredBy": [
+    "/chrome-remote-interface"
+  ],
+  "_resolved": "https://registry.npmjs.org/ws/-/ws-2.0.3.tgz",
+  "_shasum": "532fd499c3f7d7d720e543f1f807106cfc57d9cb",
+  "_shrinkwrap": null,
+  "_spec": "ws@2.0.x",
+  "_where": "/Users/ilya/Work/opal/lib/opal/cli_runners/node_modules/chrome-remote-interface",
+  "author": {
+    "name": "Einar Otto Stangvik",
+    "email": "einaros@gmail.com",
+    "url": "http://2x.io"
+  },
+  "bugs": {
+    "url": "https://github.com/websockets/ws/issues"
+  },
+  "dependencies": {
+    "ultron": "~1.1.0"
+  },
+  "description": "Simple to use, blazing fast and thoroughly tested websocket client and server for Node.js",
+  "devDependencies": {
+    "benchmark": "~2.1.2",
+    "bufferutil": "~2.0.0",
+    "eslint": "~3.15.0",
+    "eslint-config-semistandard": "~7.0.0",
+    "eslint-config-standard": "~6.2.1",
+    "eslint-plugin-promise": "~3.4.0",
+    "eslint-plugin-standard": "~2.0.1",
+    "istanbul": "~0.4.5",
+    "mocha": "~3.2.0",
+    "utf-8-validate": "~3.0.0"
+  },
+  "directories": {},
+  "dist": {
+    "shasum": "532fd499c3f7d7d720e543f1f807106cfc57d9cb",
+    "tarball": "https://registry.npmjs.org/ws/-/ws-2.0.3.tgz"
+  },
+  "gitHead": "3918e11d200e574beca9d5abd61fbe3020434aed",
+  "homepage": "https://github.com/websockets/ws#readme",
+  "keywords": [
+    "HyBi",
+    "Push",
+    "RFC-6455",
+    "WebSocket",
+    "WebSockets",
+    "real-time"
+  ],
+  "license": "MIT",
+  "main": "index.js",
+  "maintainers": [
+    {
+      "name": "3rdeden",
+      "email": "npm@3rd-Eden.com"
+    },
+    {
+      "name": "einaros",
+      "email": "einaros@gmail.com"
+    },
+    {
+      "name": "lpinca",
+      "email": "luigipinca@gmail.com"
+    },
+    {
+      "name": "v1",
+      "email": "npm@3rd-Eden.com"
+    }
+  ],
+  "name": "ws",
+  "optionalDependencies": {},
+  "readme": "ERROR: No README data found!",
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/websockets/ws.git"
+  },
+  "scripts": {
+    "coverage": "istanbul cover _mocha --report html -- test/*.test.js",
+    "integration": "npm run lint && mocha test/*.integration.js",
+    "lint": "eslint .",
+    "test": "npm run lint && mocha test/*.test.js",
+    "test-travis": "npm run lint && istanbul cover _mocha --report lcovonly -- test/*.test.js"
+  },
+  "version": "2.0.3"
+}
diff --git a/lib/opal/cli_runners/nodejs.rb b/lib/opal/cli_runners/nodejs.rb
new file mode 100644
index 00000000..d5827482
--- /dev/null
+++ b/lib/opal/cli_runners/nodejs.rb
@@ -0,0 +1,52 @@
+# frozen_string_literal: true
+
+require 'shellwords'
+require 'opal/paths'
+require 'opal/cli_runners/system_runner'
+
+module Opal
+  module CliRunners
+    class Nodejs
+      if RUBY_ENGINE == 'opal'
+        # We can't rely on Opal.gem_dir for now...
+        NODE_PATH = 'stdlib/nodejs/node_modules'
+        DIR = './lib/opal/cli_runners'
+      else
+        NODE_PATH = File.expand_path('../stdlib/nodejs/node_modules', ::Opal.gem_dir)
+        DIR = __dir__
+      end
+
+      def self.call(data)
+        (data[:options] ||= {})[:env] = { 'NODE_PATH' => node_modules }
+
+        argv = data[:argv].dup.to_a
+        argv.unshift('--') if argv.any?
+
+        opts = Shellwords.shellwords(ENV['NODE_OPTS'] || '')
+
+        SystemRunner.call(data) do |tempfile|
+          [
+            'node',
+            '--require', "#{DIR}/source-map-support-node",
+            *opts,
+            tempfile.path,
+            *argv
+          ]
+        end
+      rescue Errno::ENOENT
+        raise MissingNodeJS, 'Please install Node.js to be able to run Opal scripts.'
+      end
+
+      # Ensure stdlib node_modules is among NODE_PATHs
+      def self.node_modules
+        npsep = Gem.win_platform? ? ';' : ':'
+        ENV['NODE_PATH'].to_s.split(npsep).tap do |paths|
+          paths << NODE_PATH unless paths.include? NODE_PATH
+        end.join(npsep)
+      end
+
+      class MissingNodeJS < RunnerError
+      end
+    end
+  end
+end
diff --git a/lib/opal/cli_runners/package.json b/lib/opal/cli_runners/package.json
new file mode 100644
index 00000000..80de2c2a
--- /dev/null
+++ b/lib/opal/cli_runners/package.json
@@ -0,0 +1,5 @@
+{
+  "dependencies": {
+    "chrome-remote-interface": "latest"
+  }
+}
diff --git a/lib/opal/cli_runners/quickjs.rb b/lib/opal/cli_runners/quickjs.rb
new file mode 100644
index 00000000..71b721ac
--- /dev/null
+++ b/lib/opal/cli_runners/quickjs.rb
@@ -0,0 +1,28 @@
+# frozen_string_literal: true
+
+require 'opal/paths'
+require 'opal/cli_runners/system_runner'
+require 'shellwords'
+
+module Opal
+  module CliRunners
+    # QuickJS is Fabrice Bellard's minimalistic JavaScript engine
+    # https://github.com/bellard/quickjs
+    class Quickjs
+      def self.call(data)
+        exe = ENV['QJS_PATH'] || 'qjs'
+
+        opts = Shellwords.shellwords(ENV['QJS_OPTS'] || '')
+
+        SystemRunner.call(data) do |tempfile|
+          [exe, '--std', *opts, tempfile.path, *data[:argv]]
+        end
+      rescue Errno::ENOENT
+        raise MissingQuickjs, 'Please install QuickJS to be able to run Opal scripts.'
+      end
+
+      class MissingQuickjs < RunnerError
+      end
+    end
+  end
+end
diff --git a/lib/opal/cli_runners/server.rb b/lib/opal/cli_runners/server.rb
new file mode 100644
index 00000000..99dbd988
--- /dev/null
+++ b/lib/opal/cli_runners/server.rb
@@ -0,0 +1,96 @@
+# frozen_string_literal: true
+
+module Opal
+  module CliRunners
+    class Server
+      def self.call(data)
+        runner = new(data)
+        runner.run
+        runner.exit_status
+      end
+
+      def initialize(data)
+        options = data[:options] || {}
+        builder = data[:builder]
+
+        @code = builder.to_s + "\n" + builder.source_map.to_data_uri_comment
+        @argv = data[:argv] || []
+
+        @output = data[:output] || $stdout
+
+        @port = options.fetch(:port, ENV['OPAL_CLI_RUNNERS_SERVER_PORT'] || 3000).to_i
+
+        @static_folder = options[:static_folder] || ENV['OPAL_CLI_RUNNERS_SERVER_STATIC_FOLDER']
+        @static_folder = @static_folder == true ? 'public' : @static_folder
+        @static_folder = File.expand_path(@static_folder) if @static_folder
+      end
+
+      attr_reader :output, :port, :server, :static_folder, :code, :argv
+
+      def run
+        unless argv.empty?
+          raise ArgumentError, 'Program arguments are not supported on the Server runner'
+        end
+
+        require 'rack'
+        require 'logger'
+
+        app = build_app(code)
+
+        @server = Rack::Server.start(
+          app:       app,
+          Port:      port,
+          AccessLog: [],
+          Logger:    Logger.new(output),
+        )
+      end
+
+      def exit_status
+        nil
+      end
+
+      def build_app(source)
+        app = App.new(source)
+
+        if static_folder
+          not_found = [404, {}, []]
+          app = Rack::Cascade.new(
+            [
+              Rack::Static.new(->(_) { not_found }, urls: [''], root: static_folder),
+              app
+            ],
+          )
+        end
+
+        app
+      end
+
+      class App
+        def initialize(source)
+          @source = source
+        end
+
+        BODY = <<-HTML
+          <!doctype html>
+          <html>
+            <head>
+              <meta charset="utf-8"/>
+              <script src="/cli_runner.js"></script>
+            </head>
+          </html>
+        HTML
+
+        def call(env)
+          case env['PATH_INFO']
+          when '/'
+            [200, { 'Content-Type' => 'text/html' }, [BODY]]
+          when '/cli_runner.js'
+            [200, { 'Content-Type' => 'text/javascript' }, [@source]]
+          else
+            [404, {}, ['not found']]
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/lib/opal/cli_runners/source-map-support-browser.js b/lib/opal/cli_runners/source-map-support-browser.js
new file mode 100644
index 00000000..fe720c12
--- /dev/null
+++ b/lib/opal/cli_runners/source-map-support-browser.js
@@ -0,0 +1,6500 @@
+(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.sourceMapSupport = f()}})(function(){var define,module,exports;return (function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
+'use strict'
+
+exports.byteLength = byteLength
+exports.toByteArray = toByteArray
+exports.fromByteArray = fromByteArray
+
+var lookup = []
+var revLookup = []
+var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array
+
+var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
+for (var i = 0, len = code.length; i < len; ++i) {
+  lookup[i] = code[i]
+  revLookup[code.charCodeAt(i)] = i
+}
+
+// Support decoding URL-safe base64 strings, as Node.js does.
+// See: https://en.wikipedia.org/wiki/Base64#URL_applications
+revLookup['-'.charCodeAt(0)] = 62
+revLookup['_'.charCodeAt(0)] = 63
+
+function getLens (b64) {
+  var len = b64.length
+
+  if (len % 4 > 0) {
+    throw new Error('Invalid string. Length must be a multiple of 4')
+  }
+
+  // Trim off extra bytes after placeholder bytes are found
+  // See: https://github.com/beatgammit/base64-js/issues/42
+  var validLen = b64.indexOf('=')
+  if (validLen === -1) validLen = len
+
+  var placeHoldersLen = validLen === len
+    ? 0
+    : 4 - (validLen % 4)
+
+  return [validLen, placeHoldersLen]
+}
+
+// base64 is 4/3 + up to two characters of the original data
+function byteLength (b64) {
+  var lens = getLens(b64)
+  var validLen = lens[0]
+  var placeHoldersLen = lens[1]
+  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen
+}
+
+function _byteLength (b64, validLen, placeHoldersLen) {
+  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen
+}
+
+function toByteArray (b64) {
+  var tmp
+  var lens = getLens(b64)
+  var validLen = lens[0]
+  var placeHoldersLen = lens[1]
+
+  var arr = new Arr(_byteLength(b64, validLen, placeHoldersLen))
+
+  var curByte = 0
+
+  // if there are placeholders, only get up to the last complete 4 chars
+  var len = placeHoldersLen > 0
+    ? validLen - 4
+    : validLen
+
+  var i
+  for (i = 0; i < len; i += 4) {
+    tmp =
+      (revLookup[b64.charCodeAt(i)] << 18) |
+      (revLookup[b64.charCodeAt(i + 1)] << 12) |
+      (revLookup[b64.charCodeAt(i + 2)] << 6) |
+      revLookup[b64.charCodeAt(i + 3)]
+    arr[curByte++] = (tmp >> 16) & 0xFF
+    arr[curByte++] = (tmp >> 8) & 0xFF
+    arr[curByte++] = tmp & 0xFF
+  }
+
+  if (placeHoldersLen === 2) {
+    tmp =
+      (revLookup[b64.charCodeAt(i)] << 2) |
+      (revLookup[b64.charCodeAt(i + 1)] >> 4)
+    arr[curByte++] = tmp & 0xFF
+  }
+
+  if (placeHoldersLen === 1) {
+    tmp =
+      (revLookup[b64.charCodeAt(i)] << 10) |
+      (revLookup[b64.charCodeAt(i + 1)] << 4) |
+      (revLookup[b64.charCodeAt(i + 2)] >> 2)
+    arr[curByte++] = (tmp >> 8) & 0xFF
+    arr[curByte++] = tmp & 0xFF
+  }
+
+  return arr
+}
+
+function tripletToBase64 (num) {
+  return lookup[num >> 18 & 0x3F] +
+    lookup[num >> 12 & 0x3F] +
+    lookup[num >> 6 & 0x3F] +
+    lookup[num & 0x3F]
+}
+
+function encodeChunk (uint8, start, end) {
+  var tmp
+  var output = []
+  for (var i = start; i < end; i += 3) {
+    tmp =
+      ((uint8[i] << 16) & 0xFF0000) +
+      ((uint8[i + 1] << 8) & 0xFF00) +
+      (uint8[i + 2] & 0xFF)
+    output.push(tripletToBase64(tmp))
+  }
+  return output.join('')
+}
+
+function fromByteArray (uint8) {
+  var tmp
+  var len = uint8.length
+  var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes
+  var parts = []
+  var maxChunkLength = 16383 // must be multiple of 3
+
+  // go through the array every three bytes, we'll deal with trailing stuff later
+  for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
+    parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))
+  }
+
+  // pad the end with zeros, but make sure to not forget the extra bytes
+  if (extraBytes === 1) {
+    tmp = uint8[len - 1]
+    parts.push(
+      lookup[tmp >> 2] +
+      lookup[(tmp << 4) & 0x3F] +
+      '=='
+    )
+  } else if (extraBytes === 2) {
+    tmp = (uint8[len - 2] << 8) + uint8[len - 1]
+    parts.push(
+      lookup[tmp >> 10] +
+      lookup[(tmp >> 4) & 0x3F] +
+      lookup[(tmp << 2) & 0x3F] +
+      '='
+    )
+  }
+
+  return parts.join('')
+}
+
+},{}],2:[function(require,module,exports){
+
+},{}],3:[function(require,module,exports){
+(function (Buffer){(function (){
+/* eslint-disable node/no-deprecated-api */
+
+var toString = Object.prototype.toString
+
+var isModern = (
+  typeof Buffer !== 'undefined' &&
+  typeof Buffer.alloc === 'function' &&
+  typeof Buffer.allocUnsafe === 'function' &&
+  typeof Buffer.from === 'function'
+)
+
+function isArrayBuffer (input) {
+  return toString.call(input).slice(8, -1) === 'ArrayBuffer'
+}
+
+function fromArrayBuffer (obj, byteOffset, length) {
+  byteOffset >>>= 0
+
+  var maxLength = obj.byteLength - byteOffset
+
+  if (maxLength < 0) {
+    throw new RangeError("'offset' is out of bounds")
+  }
+
+  if (length === undefined) {
+    length = maxLength
+  } else {
+    length >>>= 0
+
+    if (length > maxLength) {
+      throw new RangeError("'length' is out of bounds")
+    }
+  }
+
+  return isModern
+    ? Buffer.from(obj.slice(byteOffset, byteOffset + length))
+    : new Buffer(new Uint8Array(obj.slice(byteOffset, byteOffset + length)))
+}
+
+function fromString (string, encoding) {
+  if (typeof encoding !== 'string' || encoding === '') {
+    encoding = 'utf8'
+  }
+
+  if (!Buffer.isEncoding(encoding)) {
+    throw new TypeError('"encoding" must be a valid string encoding')
+  }
+
+  return isModern
+    ? Buffer.from(string, encoding)
+    : new Buffer(string, encoding)
+}
+
+function bufferFrom (value, encodingOrOffset, length) {
+  if (typeof value === 'number') {
+    throw new TypeError('"value" argument must not be a number')
+  }
+
+  if (isArrayBuffer(value)) {
+    return fromArrayBuffer(value, encodingOrOffset, length)
+  }
+
+  if (typeof value === 'string') {
+    return fromString(value, encodingOrOffset)
+  }
+
+  return isModern
+    ? Buffer.from(value)
+    : new Buffer(value)
+}
+
+module.exports = bufferFrom
+
+}).call(this)}).call(this,require("buffer").Buffer)
+},{"buffer":4}],4:[function(require,module,exports){
+(function (Buffer){(function (){
+/*!
+ * The buffer module from node.js, for the browser.
+ *
+ * @author   Feross Aboukhadijeh <https://feross.org>
+ * @license  MIT
+ */
+/* eslint-disable no-proto */
+
+'use strict'
+
+var base64 = require('base64-js')
+var ieee754 = require('ieee754')
+
+exports.Buffer = Buffer
+exports.SlowBuffer = SlowBuffer
+exports.INSPECT_MAX_BYTES = 50
+
+var K_MAX_LENGTH = 0x7fffffff
+exports.kMaxLength = K_MAX_LENGTH
+
+/**
+ * If `Buffer.TYPED_ARRAY_SUPPORT`:
+ *   === true    Use Uint8Array implementation (fastest)
+ *   === false   Print warning and recommend using `buffer` v4.x which has an Object
+ *               implementation (most compatible, even IE6)
+ *
+ * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
+ * Opera 11.6+, iOS 4.2+.
+ *
+ * We report that the browser does not support typed arrays if the are not subclassable
+ * using __proto__. Firefox 4-29 lacks support for adding new properties to `Uint8Array`
+ * (See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438). IE 10 lacks support
+ * for __proto__ and has a buggy typed array implementation.
+ */
+Buffer.TYPED_ARRAY_SUPPORT = typedArraySupport()
+
+if (!Buffer.TYPED_ARRAY_SUPPORT && typeof console !== 'undefined' &&
+    typeof console.error === 'function') {
+  console.error(
+    'This browser lacks typed array (Uint8Array) support which is required by ' +
+    '`buffer` v5.x. Use `buffer` v4.x if you require old browser support.'
+  )
+}
+
+function typedArraySupport () {
+  // Can typed array instances can be augmented?
+  try {
+    var arr = new Uint8Array(1)
+    arr.__proto__ = { __proto__: Uint8Array.prototype, foo: function () { return 42 } }
+    return arr.foo() === 42
+  } catch (e) {
+    return false
+  }
+}
+
+Object.defineProperty(Buffer.prototype, 'parent', {
+  enumerable: true,
+  get: function () {
+    if (!Buffer.isBuffer(this)) return undefined
+    return this.buffer
+  }
+})
+
+Object.defineProperty(Buffer.prototype, 'offset', {
+  enumerable: true,
+  get: function () {
+    if (!Buffer.isBuffer(this)) return undefined
+    return this.byteOffset
+  }
+})
+
+function createBuffer (length) {
+  if (length > K_MAX_LENGTH) {
+    throw new RangeError('The value "' + length + '" is invalid for option "size"')
+  }
+  // Return an augmented `Uint8Array` instance
+  var buf = new Uint8Array(length)
+  buf.__proto__ = Buffer.prototype
+  return buf
+}
+
+/**
+ * The Buffer constructor returns instances of `Uint8Array` that have their
+ * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of
+ * `Uint8Array`, so the returned instances will have all the node `Buffer` methods
+ * and the `Uint8Array` methods. Square bracket notation works as expected -- it
+ * returns a single octet.
+ *
+ * The `Uint8Array` prototype remains unmodified.
+ */
+
+function Buffer (arg, encodingOrOffset, length) {
+  // Common case.
+  if (typeof arg === 'number') {
+    if (typeof encodingOrOffset === 'string') {
+      throw new TypeError(
+        'The "string" argument must be of type string. Received type number'
+      )
+    }
+    return allocUnsafe(arg)
+  }
+  return from(arg, encodingOrOffset, length)
+}
+
+// Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
+if (typeof Symbol !== 'undefined' && Symbol.species != null &&
+    Buffer[Symbol.species] === Buffer) {
+  Object.defineProperty(Buffer, Symbol.species, {
+    value: null,
+    configurable: true,
+    enumerable: false,
+    writable: false
+  })
+}
+
+Buffer.poolSize = 8192 // not used by this implementation
+
+function from (value, encodingOrOffset, length) {
+  if (typeof value === 'string') {
+    return fromString(value, encodingOrOffset)
+  }
+
+  if (ArrayBuffer.isView(value)) {
+    return fromArrayLike(value)
+  }
+
+  if (value == null) {
+    throw TypeError(
+      'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' +
+      'or Array-like Object. Received type ' + (typeof value)
+    )
+  }
+
+  if (isInstance(value, ArrayBuffer) ||
+      (value && isInstance(value.buffer, ArrayBuffer))) {
+    return fromArrayBuffer(value, encodingOrOffset, length)
+  }
+
+  if (typeof value === 'number') {
+    throw new TypeError(
+      'The "value" argument must not be of type number. Received type number'
+    )
+  }
+
+  var valueOf = value.valueOf && value.valueOf()
+  if (valueOf != null && valueOf !== value) {
+    return Buffer.from(valueOf, encodingOrOffset, length)
+  }
+
+  var b = fromObject(value)
+  if (b) return b
+
+  if (typeof Symbol !== 'undefined' && Symbol.toPrimitive != null &&
+      typeof value[Symbol.toPrimitive] === 'function') {
+    return Buffer.from(
+      value[Symbol.toPrimitive]('string'), encodingOrOffset, length
+    )
+  }
+
+  throw new TypeError(
+    'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' +
+    'or Array-like Object. Received type ' + (typeof value)
+  )
+}
+
+/**
+ * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError
+ * if value is a number.
+ * Buffer.from(str[, encoding])
+ * Buffer.from(array)
+ * Buffer.from(buffer)
+ * Buffer.from(arrayBuffer[, byteOffset[, length]])
+ **/
+Buffer.from = function (value, encodingOrOffset, length) {
+  return from(value, encodingOrOffset, length)
+}
+
+// Note: Change prototype *after* Buffer.from is defined to workaround Chrome bug:
+// https://github.com/feross/buffer/pull/148
+Buffer.prototype.__proto__ = Uint8Array.prototype
+Buffer.__proto__ = Uint8Array
+
+function assertSize (size) {
+  if (typeof size !== 'number') {
+    throw new TypeError('"size" argument must be of type number')
+  } else if (size < 0) {
+    throw new RangeError('The value "' + size + '" is invalid for option "size"')
+  }
+}
+
+function alloc (size, fill, encoding) {
+  assertSize(size)
+  if (size <= 0) {
+    return createBuffer(size)
+  }
+  if (fill !== undefined) {
+    // Only pay attention to encoding if it's a string. This
+    // prevents accidentally sending in a number that would
+    // be interpretted as a start offset.
+    return typeof encoding === 'string'
+      ? createBuffer(size).fill(fill, encoding)
+      : createBuffer(size).fill(fill)
+  }
+  return createBuffer(size)
+}
+
+/**
+ * Creates a new filled Buffer instance.
+ * alloc(size[, fill[, encoding]])
+ **/
+Buffer.alloc = function (size, fill, encoding) {
+  return alloc(size, fill, encoding)
+}
+
+function allocUnsafe (size) {
+  assertSize(size)
+  return createBuffer(size < 0 ? 0 : checked(size) | 0)
+}
+
+/**
+ * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.
+ * */
+Buffer.allocUnsafe = function (size) {
+  return allocUnsafe(size)
+}
+/**
+ * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.
+ */
+Buffer.allocUnsafeSlow = function (size) {
+  return allocUnsafe(size)
+}
+
+function fromString (string, encoding) {
+  if (typeof encoding !== 'string' || encoding === '') {
+    encoding = 'utf8'
+  }
+
+  if (!Buffer.isEncoding(encoding)) {
+    throw new TypeError('Unknown encoding: ' + encoding)
+  }
+
+  var length = byteLength(string, encoding) | 0
+  var buf = createBuffer(length)
+
+  var actual = buf.write(string, encoding)
+
+  if (actual !== length) {
+    // Writing a hex string, for example, that contains invalid characters will
+    // cause everything after the first invalid character to be ignored. (e.g.
+    // 'abxxcd' will be treated as 'ab')
+    buf = buf.slice(0, actual)
+  }
+
+  return buf
+}
+
+function fromArrayLike (array) {
+  var length = array.length < 0 ? 0 : checked(array.length) | 0
+  var buf = createBuffer(length)
+  for (var i = 0; i < length; i += 1) {
+    buf[i] = array[i] & 255
+  }
+  return buf
+}
+
+function fromArrayBuffer (array, byteOffset, length) {
+  if (byteOffset < 0 || array.byteLength < byteOffset) {
+    throw new RangeError('"offset" is outside of buffer bounds')
+  }
+
+  if (array.byteLength < byteOffset + (length || 0)) {
+    throw new RangeError('"length" is outside of buffer bounds')
+  }
+
+  var buf
+  if (byteOffset === undefined && length === undefined) {
+    buf = new Uint8Array(array)
+  } else if (length === undefined) {
+    buf = new Uint8Array(array, byteOffset)
+  } else {
+    buf = new Uint8Array(array, byteOffset, length)
+  }
+
+  // Return an augmented `Uint8Array` instance
+  buf.__proto__ = Buffer.prototype
+  return buf
+}
+
+function fromObject (obj) {
+  if (Buffer.isBuffer(obj)) {
+    var len = checked(obj.length) | 0
+    var buf = createBuffer(len)
+
+    if (buf.length === 0) {
+      return buf
+    }
+
+    obj.copy(buf, 0, 0, len)
+    return buf
+  }
+
+  if (obj.length !== undefined) {
+    if (typeof obj.length !== 'number' || numberIsNaN(obj.length)) {
+      return createBuffer(0)
+    }
+    return fromArrayLike(obj)
+  }
+
+  if (obj.type === 'Buffer' && Array.isArray(obj.data)) {
+    return fromArrayLike(obj.data)
+  }
+}
+
+function checked (length) {
+  // Note: cannot use `length < K_MAX_LENGTH` here because that fails when
+  // length is NaN (which is otherwise coerced to zero.)
+  if (length >= K_MAX_LENGTH) {
+    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
+                         'size: 0x' + K_MAX_LENGTH.toString(16) + ' bytes')
+  }
+  return length | 0
+}
+
+function SlowBuffer (length) {
+  if (+length != length) { // eslint-disable-line eqeqeq
+    length = 0
+  }
+  return Buffer.alloc(+length)
+}
+
+Buffer.isBuffer = function isBuffer (b) {
+  return b != null && b._isBuffer === true &&
+    b !== Buffer.prototype // so Buffer.isBuffer(Buffer.prototype) will be false
+}
+
+Buffer.compare = function compare (a, b) {
+  if (isInstance(a, Uint8Array)) a = Buffer.from(a, a.offset, a.byteLength)
+  if (isInstance(b, Uint8Array)) b = Buffer.from(b, b.offset, b.byteLength)
+  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
+    throw new TypeError(
+      'The "buf1", "buf2" arguments must be one of type Buffer or Uint8Array'
+    )
+  }
+
+  if (a === b) return 0
+
+  var x = a.length
+  var y = b.length
+
+  for (var i = 0, len = Math.min(x, y); i < len; ++i) {
+    if (a[i] !== b[i]) {
+      x = a[i]
+      y = b[i]
+      break
+    }
+  }
+
+  if (x < y) return -1
+  if (y < x) return 1
+  return 0
+}
+
+Buffer.isEncoding = function isEncoding (encoding) {
+  switch (String(encoding).toLowerCase()) {
+    case 'hex':
+    case 'utf8':
+    case 'utf-8':
+    case 'ascii':
+    case 'latin1':
+    case 'binary':
+    case 'base64':
+    case 'ucs2':
+    case 'ucs-2':
+    case 'utf16le':
+    case 'utf-16le':
+      return true
+    default:
+      return false
+  }
+}
+
+Buffer.concat = function concat (list, length) {
+  if (!Array.isArray(list)) {
+    throw new TypeError('"list" argument must be an Array of Buffers')
+  }
+
+  if (list.length === 0) {
+    return Buffer.alloc(0)
+  }
+
+  var i
+  if (length === undefined) {
+    length = 0
+    for (i = 0; i < list.length; ++i) {
+      length += list[i].length
+    }
+  }
+
+  var buffer = Buffer.allocUnsafe(length)
+  var pos = 0
+  for (i = 0; i < list.length; ++i) {
+    var buf = list[i]
+    if (isInstance(buf, Uint8Array)) {
+      buf = Buffer.from(buf)
+    }
+    if (!Buffer.isBuffer(buf)) {
+      throw new TypeError('"list" argument must be an Array of Buffers')
+    }
+    buf.copy(buffer, pos)
+    pos += buf.length
+  }
+  return buffer
+}
+
+function byteLength (string, encoding) {
+  if (Buffer.isBuffer(string)) {
+    return string.length
+  }
+  if (ArrayBuffer.isView(string) || isInstance(string, ArrayBuffer)) {
+    return string.byteLength
+  }
+  if (typeof string !== 'string') {
+    throw new TypeError(
+      'The "string" argument must be one of type string, Buffer, or ArrayBuffer. ' +
+      'Received type ' + typeof string
+    )
+  }
+
+  var len = string.length
+  var mustMatch = (arguments.length > 2 && arguments[2] === true)
+  if (!mustMatch && len === 0) return 0
+
+  // Use a for loop to avoid recursion
+  var loweredCase = false
+  for (;;) {
+    switch (encoding) {
+      case 'ascii':
+      case 'latin1':
+      case 'binary':
+        return len
+      case 'utf8':
+      case 'utf-8':
+        return utf8ToBytes(string).length
+      case 'ucs2':
+      case 'ucs-2':
+      case 'utf16le':
+      case 'utf-16le':
+        return len * 2
+      case 'hex':
+        return len >>> 1
+      case 'base64':
+        return base64ToBytes(string).length
+      default:
+        if (loweredCase) {
+          return mustMatch ? -1 : utf8ToBytes(string).length // assume utf8
+        }
+        encoding = ('' + encoding).toLowerCase()
+        loweredCase = true
+    }
+  }
+}
+Buffer.byteLength = byteLength
+
+function slowToString (encoding, start, end) {
+  var loweredCase = false
+
+  // No need to verify that "this.length <= MAX_UINT32" since it's a read-only
+  // property of a typed array.
+
+  // This behaves neither like String nor Uint8Array in that we set start/end
+  // to their upper/lower bounds if the value passed is out of range.
+  // undefined is handled specially as per ECMA-262 6th Edition,
+  // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.
+  if (start === undefined || start < 0) {
+    start = 0
+  }
+  // Return early if start > this.length. Done here to prevent potential uint32
+  // coercion fail below.
+  if (start > this.length) {
+    return ''
+  }
+
+  if (end === undefined || end > this.length) {
+    end = this.length
+  }
+
+  if (end <= 0) {
+    return ''
+  }
+
+  // Force coersion to uint32. This will also coerce falsey/NaN values to 0.
+  end >>>= 0
+  start >>>= 0
+
+  if (end <= start) {
+    return ''
+  }
+
+  if (!encoding) encoding = 'utf8'
+
+  while (true) {
+    switch (encoding) {
+      case 'hex':
+        return hexSlice(this, start, end)
+
+      case 'utf8':
+      case 'utf-8':
+        return utf8Slice(this, start, end)
+
+      case 'ascii':
+        return asciiSlice(this, start, end)
+
+      case 'latin1':
+      case 'binary':
+        return latin1Slice(this, start, end)
+
+      case 'base64':
+        return base64Slice(this, start, end)
+
+      case 'ucs2':
+      case 'ucs-2':
+      case 'utf16le':
+      case 'utf-16le':
+        return utf16leSlice(this, start, end)
+
+      default:
+        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
+        encoding = (encoding + '').toLowerCase()
+        loweredCase = true
+    }
+  }
+}
+
+// This property is used by `Buffer.isBuffer` (and the `is-buffer` npm package)
+// to detect a Buffer instance. It's not possible to use `instanceof Buffer`
+// reliably in a browserify context because there could be multiple different
+// copies of the 'buffer' package in use. This method works even for Buffer
+// instances that were created from another copy of the `buffer` package.
+// See: https://github.com/feross/buffer/issues/154
+Buffer.prototype._isBuffer = true
+
+function swap (b, n, m) {
+  var i = b[n]
+  b[n] = b[m]
+  b[m] = i
+}
+
+Buffer.prototype.swap16 = function swap16 () {
+  var len = this.length
+  if (len % 2 !== 0) {
+    throw new RangeError('Buffer size must be a multiple of 16-bits')
+  }
+  for (var i = 0; i < len; i += 2) {
+    swap(this, i, i + 1)
+  }
+  return this
+}
+
+Buffer.prototype.swap32 = function swap32 () {
+  var len = this.length
+  if (len % 4 !== 0) {
+    throw new RangeError('Buffer size must be a multiple of 32-bits')
+  }
+  for (var i = 0; i < len; i += 4) {
+    swap(this, i, i + 3)
+    swap(this, i + 1, i + 2)
+  }
+  return this
+}
+
+Buffer.prototype.swap64 = function swap64 () {
+  var len = this.length
+  if (len % 8 !== 0) {
+    throw new RangeError('Buffer size must be a multiple of 64-bits')
+  }
+  for (var i = 0; i < len; i += 8) {
+    swap(this, i, i + 7)
+    swap(this, i + 1, i + 6)
+    swap(this, i + 2, i + 5)
+    swap(this, i + 3, i + 4)
+  }
+  return this
+}
+
+Buffer.prototype.toString = function toString () {
+  var length = this.length
+  if (length === 0) return ''
+  if (arguments.length === 0) return utf8Slice(this, 0, length)
+  return slowToString.apply(this, arguments)
+}
+
+Buffer.prototype.toLocaleString = Buffer.prototype.toString
+
+Buffer.prototype.equals = function equals (b) {
+  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
+  if (this === b) return true
+  return Buffer.compare(this, b) === 0
+}
+
+Buffer.prototype.inspect = function inspect () {
+  var str = ''
+  var max = exports.INSPECT_MAX_BYTES
+  str = this.toString('hex', 0, max).replace(/(.{2})/g, '$1 ').trim()
+  if (this.length > max) str += ' ... '
+  return '<Buffer ' + str + '>'
+}
+
+Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {
+  if (isInstance(target, Uint8Array)) {
+    target = Buffer.from(target, target.offset, target.byteLength)
+  }
+  if (!Buffer.isBuffer(target)) {
+    throw new TypeError(
+      'The "target" argument must be one of type Buffer or Uint8Array. ' +
+      'Received type ' + (typeof target)
+    )
+  }
+
+  if (start === undefined) {
+    start = 0
+  }
+  if (end === undefined) {
+    end = target ? target.length : 0
+  }
+  if (thisStart === undefined) {
+    thisStart = 0
+  }
+  if (thisEnd === undefined) {
+    thisEnd = this.length
+  }
+
+  if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {
+    throw new RangeError('out of range index')
+  }
+
+  if (thisStart >= thisEnd && start >= end) {
+    return 0
+  }
+  if (thisStart >= thisEnd) {
+    return -1
+  }
+  if (start >= end) {
+    return 1
+  }
+
+  start >>>= 0
+  end >>>= 0
+  thisStart >>>= 0
+  thisEnd >>>= 0
+
+  if (this === target) return 0
+
+  var x = thisEnd - thisStart
+  var y = end - start
+  var len = Math.min(x, y)
+
+  var thisCopy = this.slice(thisStart, thisEnd)
+  var targetCopy = target.slice(start, end)
+
+  for (var i = 0; i < len; ++i) {
+    if (thisCopy[i] !== targetCopy[i]) {
+      x = thisCopy[i]
+      y = targetCopy[i]
+      break
+    }
+  }
+
+  if (x < y) return -1
+  if (y < x) return 1
+  return 0
+}
+
+// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,
+// OR the last index of `val` in `buffer` at offset <= `byteOffset`.
+//
+// Arguments:
+// - buffer - a Buffer to search
+// - val - a string, Buffer, or number
+// - byteOffset - an index into `buffer`; will be clamped to an int32
+// - encoding - an optional encoding, relevant is val is a string
+// - dir - true for indexOf, false for lastIndexOf
+function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {
+  // Empty buffer means no match
+  if (buffer.length === 0) return -1
+
+  // Normalize byteOffset
+  if (typeof byteOffset === 'string') {
+    encoding = byteOffset
+    byteOffset = 0
+  } else if (byteOffset > 0x7fffffff) {
+    byteOffset = 0x7fffffff
+  } else if (byteOffset < -0x80000000) {
+    byteOffset = -0x80000000
+  }
+  byteOffset = +byteOffset // Coerce to Number.
+  if (numberIsNaN(byteOffset)) {
+    // byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer
+    byteOffset = dir ? 0 : (buffer.length - 1)
+  }
+
+  // Normalize byteOffset: negative offsets start from the end of the buffer
+  if (byteOffset < 0) byteOffset = buffer.length + byteOffset
+  if (byteOffset >= buffer.length) {
+    if (dir) return -1
+    else byteOffset = buffer.length - 1
+  } else if (byteOffset < 0) {
+    if (dir) byteOffset = 0
+    else return -1
+  }
+
+  // Normalize val
+  if (typeof val === 'string') {
+    val = Buffer.from(val, encoding)
+  }
+
+  // Finally, search either indexOf (if dir is true) or lastIndexOf
+  if (Buffer.isBuffer(val)) {
+    // Special case: looking for empty string/buffer always fails
+    if (val.length === 0) {
+      return -1
+    }
+    return arrayIndexOf(buffer, val, byteOffset, encoding, dir)
+  } else if (typeof val === 'number') {
+    val = val & 0xFF // Search for a byte value [0-255]
+    if (typeof Uint8Array.prototype.indexOf === 'function') {
+      if (dir) {
+        return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)
+      } else {
+        return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)
+      }
+    }
+    return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)
+  }
+
+  throw new TypeError('val must be string, number or Buffer')
+}
+
+function arrayIndexOf (arr, val, byteOffset, encoding, dir) {
+  var indexSize = 1
+  var arrLength = arr.length
+  var valLength = val.length
+
+  if (encoding !== undefined) {
+    encoding = String(encoding).toLowerCase()
+    if (encoding === 'ucs2' || encoding === 'ucs-2' ||
+        encoding === 'utf16le' || encoding === 'utf-16le') {
+      if (arr.length < 2 || val.length < 2) {
+        return -1
+      }
+      indexSize = 2
+      arrLength /= 2
+      valLength /= 2
+      byteOffset /= 2
+    }
+  }
+
+  function read (buf, i) {
+    if (indexSize === 1) {
+      return buf[i]
+    } else {
+      return buf.readUInt16BE(i * indexSize)
+    }
+  }
+
+  var i
+  if (dir) {
+    var foundIndex = -1
+    for (i = byteOffset; i < arrLength; i++) {
+      if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {
+        if (foundIndex === -1) foundIndex = i
+        if (i - foundIndex + 1 === valLength) return foundIndex * indexSize
+      } else {
+        if (foundIndex !== -1) i -= i - foundIndex
+        foundIndex = -1
+      }
+    }
+  } else {
+    if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength
+    for (i = byteOffset; i >= 0; i--) {
+      var found = true
+      for (var j = 0; j < valLength; j++) {
+        if (read(arr, i + j) !== read(val, j)) {
+          found = false
+          break
+        }
+      }
+      if (found) return i
+    }
+  }
+
+  return -1
+}
+
+Buffer.prototype.includes = function includes (val, byteOffset, encoding) {
+  return this.indexOf(val, byteOffset, encoding) !== -1
+}
+
+Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {
+  return bidirectionalIndexOf(this, val, byteOffset, encoding, true)
+}
+
+Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {
+  return bidirectionalIndexOf(this, val, byteOffset, encoding, false)
+}
+
+function hexWrite (buf, string, offset, length) {
+  offset = Number(offset) || 0
+  var remaining = buf.length - offset
+  if (!length) {
+    length = remaining
+  } else {
+    length = Number(length)
+    if (length > remaining) {
+      length = remaining
+    }
+  }
+
+  var strLen = string.length
+
+  if (length > strLen / 2) {
+    length = strLen / 2
+  }
+  for (var i = 0; i < length; ++i) {
+    var parsed = parseInt(string.substr(i * 2, 2), 16)
+    if (numberIsNaN(parsed)) return i
+    buf[offset + i] = parsed
+  }
+  return i
+}
+
+function utf8Write (buf, string, offset, length) {
+  return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
+}
+
+function asciiWrite (buf, string, offset, length) {
+  return blitBuffer(asciiToBytes(string), buf, offset, length)
+}
+
+function latin1Write (buf, string, offset, length) {
+  return asciiWrite(buf, string, offset, length)
+}
+
+function base64Write (buf, string, offset, length) {
+  return blitBuffer(base64ToBytes(string), buf, offset, length)
+}
+
+function ucs2Write (buf, string, offset, length) {
+  return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
+}
+
+Buffer.prototype.write = function write (string, offset, length, encoding) {
+  // Buffer#write(string)
+  if (offset === undefined) {
+    encoding = 'utf8'
+    length = this.length
+    offset = 0
+  // Buffer#write(string, encoding)
+  } else if (length === undefined && typeof offset === 'string') {
+    encoding = offset
+    length = this.length
+    offset = 0
+  // Buffer#write(string, offset[, length][, encoding])
+  } else if (isFinite(offset)) {
+    offset = offset >>> 0
+    if (isFinite(length)) {
+      length = length >>> 0
+      if (encoding === undefined) encoding = 'utf8'
+    } else {
+      encoding = length
+      length = undefined
+    }
+  } else {
+    throw new Error(
+      'Buffer.write(string, encoding, offset[, length]) is no longer supported'
+    )
+  }
+
+  var remaining = this.length - offset
+  if (length === undefined || length > remaining) length = remaining
+
+  if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
+    throw new RangeError('Attempt to write outside buffer bounds')
+  }
+
+  if (!encoding) encoding = 'utf8'
+
+  var loweredCase = false
+  for (;;) {
+    switch (encoding) {
+      case 'hex':
+        return hexWrite(this, string, offset, length)
+
+      case 'utf8':
+      case 'utf-8':
+        return utf8Write(this, string, offset, length)
+
+      case 'ascii':
+        return asciiWrite(this, string, offset, length)
+
+      case 'latin1':
+      case 'binary':
+        return latin1Write(this, string, offset, length)
+
+      case 'base64':
+        // Warning: maxLength not taken into account in base64Write
+        return base64Write(this, string, offset, length)
+
+      case 'ucs2':
+      case 'ucs-2':
+      case 'utf16le':
+      case 'utf-16le':
+        return ucs2Write(this, string, offset, length)
+
+      default:
+        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
+        encoding = ('' + encoding).toLowerCase()
+        loweredCase = true
+    }
+  }
+}
+
+Buffer.prototype.toJSON = function toJSON () {
+  return {
+    type: 'Buffer',
+    data: Array.prototype.slice.call(this._arr || this, 0)
+  }
+}
+
+function base64Slice (buf, start, end) {
+  if (start === 0 && end === buf.length) {
+    return base64.fromByteArray(buf)
+  } else {
+    return base64.fromByteArray(buf.slice(start, end))
+  }
+}
+
+function utf8Slice (buf, start, end) {
+  end = Math.min(buf.length, end)
+  var res = []
+
+  var i = start
+  while (i < end) {
+    var firstByte = buf[i]
+    var codePoint = null
+    var bytesPerSequence = (firstByte > 0xEF) ? 4
+      : (firstByte > 0xDF) ? 3
+        : (firstByte > 0xBF) ? 2
+          : 1
+
+    if (i + bytesPerSequence <= end) {
+      var secondByte, thirdByte, fourthByte, tempCodePoint
+
+      switch (bytesPerSequence) {
+        case 1:
+          if (firstByte < 0x80) {
+            codePoint = firstByte
+          }
+          break
+        case 2:
+          secondByte = buf[i + 1]
+          if ((secondByte & 0xC0) === 0x80) {
+            tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)
+            if (tempCodePoint > 0x7F) {
+              codePoint = tempCodePoint
+            }
+          }
+          break
+        case 3:
+          secondByte = buf[i + 1]
+          thirdByte = buf[i + 2]
+          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {
+            tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)
+            if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {
+              codePoint = tempCodePoint
+            }
+          }
+          break
+        case 4:
+          secondByte = buf[i + 1]
+          thirdByte = buf[i + 2]
+          fourthByte = buf[i + 3]
+          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {
+            tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)
+            if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {
+              codePoint = tempCodePoint
+            }
+          }
+      }
+    }
+
+    if (codePoint === null) {
+      // we did not generate a valid codePoint so insert a
+      // replacement char (U+FFFD) and advance only 1 byte
+      codePoint = 0xFFFD
+      bytesPerSequence = 1
+    } else if (codePoint > 0xFFFF) {
+      // encode to utf16 (surrogate pair dance)
+      codePoint -= 0x10000
+      res.push(codePoint >>> 10 & 0x3FF | 0xD800)
+      codePoint = 0xDC00 | codePoint & 0x3FF
+    }
+
+    res.push(codePoint)
+    i += bytesPerSequence
+  }
+
+  return decodeCodePointsArray(res)
+}
+
+// Based on http://stackoverflow.com/a/22747272/680742, the browser with
+// the lowest limit is Chrome, with 0x10000 args.
+// We go 1 magnitude less, for safety
+var MAX_ARGUMENTS_LENGTH = 0x1000
+
+function decodeCodePointsArray (codePoints) {
+  var len = codePoints.length
+  if (len <= MAX_ARGUMENTS_LENGTH) {
+    return String.fromCharCode.apply(String, codePoints) // avoid extra slice()
+  }
+
+  // Decode in chunks to avoid "call stack size exceeded".
+  var res = ''
+  var i = 0
+  while (i < len) {
+    res += String.fromCharCode.apply(
+      String,
+      codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)
+    )
+  }
+  return res
+}
+
+function asciiSlice (buf, start, end) {
+  var ret = ''
+  end = Math.min(buf.length, end)
+
+  for (var i = start; i < end; ++i) {
+    ret += String.fromCharCode(buf[i] & 0x7F)
+  }
+  return ret
+}
+
+function latin1Slice (buf, start, end) {
+  var ret = ''
+  end = Math.min(buf.length, end)
+
+  for (var i = start; i < end; ++i) {
+    ret += String.fromCharCode(buf[i])
+  }
+  return ret
+}
+
+function hexSlice (buf, start, end) {
+  var len = buf.length
+
+  if (!start || start < 0) start = 0
+  if (!end || end < 0 || end > len) end = len
+
+  var out = ''
+  for (var i = start; i < end; ++i) {
+    out += toHex(buf[i])
+  }
+  return out
+}
+
+function utf16leSlice (buf, start, end) {
+  var bytes = buf.slice(start, end)
+  var res = ''
+  for (var i = 0; i < bytes.length; i += 2) {
+    res += String.fromCharCode(bytes[i] + (bytes[i + 1] * 256))
+  }
+  return res
+}
+
+Buffer.prototype.slice = function slice (start, end) {
+  var len = this.length
+  start = ~~start
+  end = end === undefined ? len : ~~end
+
+  if (start < 0) {
+    start += len
+    if (start < 0) start = 0
+  } else if (start > len) {
+    start = len
+  }
+
+  if (end < 0) {
+    end += len
+    if (end < 0) end = 0
+  } else if (end > len) {
+    end = len
+  }
+
+  if (end < start) end = start
+
+  var newBuf = this.subarray(start, end)
+  // Return an augmented `Uint8Array` instance
+  newBuf.__proto__ = Buffer.prototype
+  return newBuf
+}
+
+/*
+ * Need to make sure that buffer isn't trying to write out of bounds.
+ */
+function checkOffset (offset, ext, length) {
+  if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
+  if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
+}
+
+Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
+  offset = offset >>> 0
+  byteLength = byteLength >>> 0
+  if (!noAssert) checkOffset(offset, byteLength, this.length)
+
+  var val = this[offset]
+  var mul = 1
+  var i = 0
+  while (++i < byteLength && (mul *= 0x100)) {
+    val += this[offset + i] * mul
+  }
+
+  return val
+}
+
+Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
+  offset = offset >>> 0
+  byteLength = byteLength >>> 0
+  if (!noAssert) {
+    checkOffset(offset, byteLength, this.length)
+  }
+
+  var val = this[offset + --byteLength]
+  var mul = 1
+  while (byteLength > 0 && (mul *= 0x100)) {
+    val += this[offset + --byteLength] * mul
+  }
+
+  return val
+}
+
+Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 1, this.length)
+  return this[offset]
+}
+
+Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 2, this.length)
+  return this[offset] | (this[offset + 1] << 8)
+}
+
+Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 2, this.length)
+  return (this[offset] << 8) | this[offset + 1]
+}
+
+Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 4, this.length)
+
+  return ((this[offset]) |
+      (this[offset + 1] << 8) |
+      (this[offset + 2] << 16)) +
+      (this[offset + 3] * 0x1000000)
+}
+
+Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 4, this.length)
+
+  return (this[offset] * 0x1000000) +
+    ((this[offset + 1] << 16) |
+    (this[offset + 2] << 8) |
+    this[offset + 3])
+}
+
+Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
+  offset = offset >>> 0
+  byteLength = byteLength >>> 0
+  if (!noAssert) checkOffset(offset, byteLength, this.length)
+
+  var val = this[offset]
+  var mul = 1
+  var i = 0
+  while (++i < byteLength && (mul *= 0x100)) {
+    val += this[offset + i] * mul
+  }
+  mul *= 0x80
+
+  if (val >= mul) val -= Math.pow(2, 8 * byteLength)
+
+  return val
+}
+
+Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
+  offset = offset >>> 0
+  byteLength = byteLength >>> 0
+  if (!noAssert) checkOffset(offset, byteLength, this.length)
+
+  var i = byteLength
+  var mul = 1
+  var val = this[offset + --i]
+  while (i > 0 && (mul *= 0x100)) {
+    val += this[offset + --i] * mul
+  }
+  mul *= 0x80
+
+  if (val >= mul) val -= Math.pow(2, 8 * byteLength)
+
+  return val
+}
+
+Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 1, this.length)
+  if (!(this[offset] & 0x80)) return (this[offset])
+  return ((0xff - this[offset] + 1) * -1)
+}
+
+Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 2, this.length)
+  var val = this[offset] | (this[offset + 1] << 8)
+  return (val & 0x8000) ? val | 0xFFFF0000 : val
+}
+
+Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 2, this.length)
+  var val = this[offset + 1] | (this[offset] << 8)
+  return (val & 0x8000) ? val | 0xFFFF0000 : val
+}
+
+Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 4, this.length)
+
+  return (this[offset]) |
+    (this[offset + 1] << 8) |
+    (this[offset + 2] << 16) |
+    (this[offset + 3] << 24)
+}
+
+Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 4, this.length)
+
+  return (this[offset] << 24) |
+    (this[offset + 1] << 16) |
+    (this[offset + 2] << 8) |
+    (this[offset + 3])
+}
+
+Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 4, this.length)
+  return ieee754.read(this, offset, true, 23, 4)
+}
+
+Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 4, this.length)
+  return ieee754.read(this, offset, false, 23, 4)
+}
+
+Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 8, this.length)
+  return ieee754.read(this, offset, true, 52, 8)
+}
+
+Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 8, this.length)
+  return ieee754.read(this, offset, false, 52, 8)
+}
+
+function checkInt (buf, value, offset, ext, max, min) {
+  if (!Buffer.isBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance')
+  if (value > max || value < min) throw new RangeError('"value" argument is out of bounds')
+  if (offset + ext > buf.length) throw new RangeError('Index out of range')
+}
+
+Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  byteLength = byteLength >>> 0
+  if (!noAssert) {
+    var maxBytes = Math.pow(2, 8 * byteLength) - 1
+    checkInt(this, value, offset, byteLength, maxBytes, 0)
+  }
+
+  var mul = 1
+  var i = 0
+  this[offset] = value & 0xFF
+  while (++i < byteLength && (mul *= 0x100)) {
+    this[offset + i] = (value / mul) & 0xFF
+  }
+
+  return offset + byteLength
+}
+
+Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  byteLength = byteLength >>> 0
+  if (!noAssert) {
+    var maxBytes = Math.pow(2, 8 * byteLength) - 1
+    checkInt(this, value, offset, byteLength, maxBytes, 0)
+  }
+
+  var i = byteLength - 1
+  var mul = 1
+  this[offset + i] = value & 0xFF
+  while (--i >= 0 && (mul *= 0x100)) {
+    this[offset + i] = (value / mul) & 0xFF
+  }
+
+  return offset + byteLength
+}
+
+Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)
+  this[offset] = (value & 0xff)
+  return offset + 1
+}
+
+Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
+  this[offset] = (value & 0xff)
+  this[offset + 1] = (value >>> 8)
+  return offset + 2
+}
+
+Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
+  this[offset] = (value >>> 8)
+  this[offset + 1] = (value & 0xff)
+  return offset + 2
+}
+
+Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
+  this[offset + 3] = (value >>> 24)
+  this[offset + 2] = (value >>> 16)
+  this[offset + 1] = (value >>> 8)
+  this[offset] = (value & 0xff)
+  return offset + 4
+}
+
+Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
+  this[offset] = (value >>> 24)
+  this[offset + 1] = (value >>> 16)
+  this[offset + 2] = (value >>> 8)
+  this[offset + 3] = (value & 0xff)
+  return offset + 4
+}
+
+Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) {
+    var limit = Math.pow(2, (8 * byteLength) - 1)
+
+    checkInt(this, value, offset, byteLength, limit - 1, -limit)
+  }
+
+  var i = 0
+  var mul = 1
+  var sub = 0
+  this[offset] = value & 0xFF
+  while (++i < byteLength && (mul *= 0x100)) {
+    if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {
+      sub = 1
+    }
+    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
+  }
+
+  return offset + byteLength
+}
+
+Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) {
+    var limit = Math.pow(2, (8 * byteLength) - 1)
+
+    checkInt(this, value, offset, byteLength, limit - 1, -limit)
+  }
+
+  var i = byteLength - 1
+  var mul = 1
+  var sub = 0
+  this[offset + i] = value & 0xFF
+  while (--i >= 0 && (mul *= 0x100)) {
+    if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {
+      sub = 1
+    }
+    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
+  }
+
+  return offset + byteLength
+}
+
+Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)
+  if (value < 0) value = 0xff + value + 1
+  this[offset] = (value & 0xff)
+  return offset + 1
+}
+
+Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
+  this[offset] = (value & 0xff)
+  this[offset + 1] = (value >>> 8)
+  return offset + 2
+}
+
+Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
+  this[offset] = (value >>> 8)
+  this[offset + 1] = (value & 0xff)
+  return offset + 2
+}
+
+Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
+  this[offset] = (value & 0xff)
+  this[offset + 1] = (value >>> 8)
+  this[offset + 2] = (value >>> 16)
+  this[offset + 3] = (value >>> 24)
+  return offset + 4
+}
+
+Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
+  if (value < 0) value = 0xffffffff + value + 1
+  this[offset] = (value >>> 24)
+  this[offset + 1] = (value >>> 16)
+  this[offset + 2] = (value >>> 8)
+  this[offset + 3] = (value & 0xff)
+  return offset + 4
+}
+
+function checkIEEE754 (buf, value, offset, ext, max, min) {
+  if (offset + ext > buf.length) throw new RangeError('Index out of range')
+  if (offset < 0) throw new RangeError('Index out of range')
+}
+
+function writeFloat (buf, value, offset, littleEndian, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) {
+    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
+  }
+  ieee754.write(buf, value, offset, littleEndian, 23, 4)
+  return offset + 4
+}
+
+Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
+  return writeFloat(this, value, offset, true, noAssert)
+}
+
+Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
+  return writeFloat(this, value, offset, false, noAssert)
+}
+
+function writeDouble (buf, value, offset, littleEndian, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) {
+    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
+  }
+  ieee754.write(buf, value, offset, littleEndian, 52, 8)
+  return offset + 8
+}
+
+Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
+  return writeDouble(this, value, offset, true, noAssert)
+}
+
+Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
+  return writeDouble(this, value, offset, false, noAssert)
+}
+
+// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
+Buffer.prototype.copy = function copy (target, targetStart, start, end) {
+  if (!Buffer.isBuffer(target)) throw new TypeError('argument should be a Buffer')
+  if (!start) start = 0
+  if (!end && end !== 0) end = this.length
+  if (targetStart >= target.length) targetStart = target.length
+  if (!targetStart) targetStart = 0
+  if (end > 0 && end < start) end = start
+
+  // Copy 0 bytes; we're done
+  if (end === start) return 0
+  if (target.length === 0 || this.length === 0) return 0
+
+  // Fatal error conditions
+  if (targetStart < 0) {
+    throw new RangeError('targetStart out of bounds')
+  }
+  if (start < 0 || start >= this.length) throw new RangeError('Index out of range')
+  if (end < 0) throw new RangeError('sourceEnd out of bounds')
+
+  // Are we oob?
+  if (end > this.length) end = this.length
+  if (target.length - targetStart < end - start) {
+    end = target.length - targetStart + start
+  }
+
+  var len = end - start
+
+  if (this === target && typeof Uint8Array.prototype.copyWithin === 'function') {
+    // Use built-in when available, missing from IE11
+    this.copyWithin(targetStart, start, end)
+  } else if (this === target && start < targetStart && targetStart < end) {
+    // descending copy from end
+    for (var i = len - 1; i >= 0; --i) {
+      target[i + targetStart] = this[i + start]
+    }
+  } else {
+    Uint8Array.prototype.set.call(
+      target,
+      this.subarray(start, end),
+      targetStart
+    )
+  }
+
+  return len
+}
+
+// Usage:
+//    buffer.fill(number[, offset[, end]])
+//    buffer.fill(buffer[, offset[, end]])
+//    buffer.fill(string[, offset[, end]][, encoding])
+Buffer.prototype.fill = function fill (val, start, end, encoding) {
+  // Handle string cases:
+  if (typeof val === 'string') {
+    if (typeof start === 'string') {
+      encoding = start
+      start = 0
+      end = this.length
+    } else if (typeof end === 'string') {
+      encoding = end
+      end = this.length
+    }
+    if (encoding !== undefined && typeof encoding !== 'string') {
+      throw new TypeError('encoding must be a string')
+    }
+    if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {
+      throw new TypeError('Unknown encoding: ' + encoding)
+    }
+    if (val.length === 1) {
+      var code = val.charCodeAt(0)
+      if ((encoding === 'utf8' && code < 128) ||
+          encoding === 'latin1') {
+        // Fast path: If `val` fits into a single byte, use that numeric value.
+        val = code
+      }
+    }
+  } else if (typeof val === 'number') {
+    val = val & 255
+  }
+
+  // Invalid ranges are not set to a default, so can range check early.
+  if (start < 0 || this.length < start || this.length < end) {
+    throw new RangeError('Out of range index')
+  }
+
+  if (end <= start) {
+    return this
+  }
+
+  start = start >>> 0
+  end = end === undefined ? this.length : end >>> 0
+
+  if (!val) val = 0
+
+  var i
+  if (typeof val === 'number') {
+    for (i = start; i < end; ++i) {
+      this[i] = val
+    }
+  } else {
+    var bytes = Buffer.isBuffer(val)
+      ? val
+      : Buffer.from(val, encoding)
+    var len = bytes.length
+    if (len === 0) {
+      throw new TypeError('The value "' + val +
+        '" is invalid for argument "value"')
+    }
+    for (i = 0; i < end - start; ++i) {
+      this[i + start] = bytes[i % len]
+    }
+  }
+
+  return this
+}
+
+// HELPER FUNCTIONS
+// ================
+
+var INVALID_BASE64_RE = /[^+/0-9A-Za-z-_]/g
+
+function base64clean (str) {
+  // Node takes equal signs as end of the Base64 encoding
+  str = str.split('=')[0]
+  // Node strips out invalid characters like \n and \t from the string, base64-js does not
+  str = str.trim().replace(INVALID_BASE64_RE, '')
+  // Node converts strings with length < 2 to ''
+  if (str.length < 2) return ''
+  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
+  while (str.length % 4 !== 0) {
+    str = str + '='
+  }
+  return str
+}
+
+function toHex (n) {
+  if (n < 16) return '0' + n.toString(16)
+  return n.toString(16)
+}
+
+function utf8ToBytes (string, units) {
+  units = units || Infinity
+  var codePoint
+  var length = string.length
+  var leadSurrogate = null
+  var bytes = []
+
+  for (var i = 0; i < length; ++i) {
+    codePoint = string.charCodeAt(i)
+
+    // is surrogate component
+    if (codePoint > 0xD7FF && codePoint < 0xE000) {
+      // last char was a lead
+      if (!leadSurrogate) {
+        // no lead yet
+        if (codePoint > 0xDBFF) {
+          // unexpected trail
+          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+          continue
+        } else if (i + 1 === length) {
+          // unpaired lead
+          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+          continue
+        }
+
+        // valid lead
+        leadSurrogate = codePoint
+
+        continue
+      }
+
+      // 2 leads in a row
+      if (codePoint < 0xDC00) {
+        if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+        leadSurrogate = codePoint
+        continue
+      }
+
+      // valid surrogate pair
+      codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000
+    } else if (leadSurrogate) {
+      // valid bmp char, but last char was a lead
+      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+    }
+
+    leadSurrogate = null
+
+    // encode utf8
+    if (codePoint < 0x80) {
+      if ((units -= 1) < 0) break
+      bytes.push(codePoint)
+    } else if (codePoint < 0x800) {
+      if ((units -= 2) < 0) break
+      bytes.push(
+        codePoint >> 0x6 | 0xC0,
+        codePoint & 0x3F | 0x80
+      )
+    } else if (codePoint < 0x10000) {
+      if ((units -= 3) < 0) break
+      bytes.push(
+        codePoint >> 0xC | 0xE0,
+        codePoint >> 0x6 & 0x3F | 0x80,
+        codePoint & 0x3F | 0x80
+      )
+    } else if (codePoint < 0x110000) {
+      if ((units -= 4) < 0) break
+      bytes.push(
+        codePoint >> 0x12 | 0xF0,
+        codePoint >> 0xC & 0x3F | 0x80,
+        codePoint >> 0x6 & 0x3F | 0x80,
+        codePoint & 0x3F | 0x80
+      )
+    } else {
+      throw new Error('Invalid code point')
+    }
+  }
+
+  return bytes
+}
+
+function asciiToBytes (str) {
+  var byteArray = []
+  for (var i = 0; i < str.length; ++i) {
+    // Node's code seems to be doing this and not & 0x7F..
+    byteArray.push(str.charCodeAt(i) & 0xFF)
+  }
+  return byteArray
+}
+
+function utf16leToBytes (str, units) {
+  var c, hi, lo
+  var byteArray = []
+  for (var i = 0; i < str.length; ++i) {
+    if ((units -= 2) < 0) break
+
+    c = str.charCodeAt(i)
+    hi = c >> 8
+    lo = c % 256
+    byteArray.push(lo)
+    byteArray.push(hi)
+  }
+
+  return byteArray
+}
+
+function base64ToBytes (str) {
+  return base64.toByteArray(base64clean(str))
+}
+
+function blitBuffer (src, dst, offset, length) {
+  for (var i = 0; i < length; ++i) {
+    if ((i + offset >= dst.length) || (i >= src.length)) break
+    dst[i + offset] = src[i]
+  }
+  return i
+}
+
+// ArrayBuffer or Uint8Array objects from other contexts (i.e. iframes) do not pass
+// the `instanceof` check but they should be treated as of that type.
+// See: https://github.com/feross/buffer/issues/166
+function isInstance (obj, type) {
+  return obj instanceof type ||
+    (obj != null && obj.constructor != null && obj.constructor.name != null &&
+      obj.constructor.name === type.name)
+}
+function numberIsNaN (obj) {
+  // For IE11 support
+  return obj !== obj // eslint-disable-line no-self-compare
+}
+
+}).call(this)}).call(this,require("buffer").Buffer)
+},{"base64-js":1,"buffer":4,"ieee754":5}],5:[function(require,module,exports){
+/*! ieee754. BSD-3-Clause License. Feross Aboukhadijeh <https://feross.org/opensource> */
+exports.read = function (buffer, offset, isLE, mLen, nBytes) {
+  var e, m
+  var eLen = (nBytes * 8) - mLen - 1
+  var eMax = (1 << eLen) - 1
+  var eBias = eMax >> 1
+  var nBits = -7
+  var i = isLE ? (nBytes - 1) : 0
+  var d = isLE ? -1 : 1
+  var s = buffer[offset + i]
+
+  i += d
+
+  e = s & ((1 << (-nBits)) - 1)
+  s >>= (-nBits)
+  nBits += eLen
+  for (; nBits > 0; e = (e * 256) + buffer[offset + i], i += d, nBits -= 8) {}
+
+  m = e & ((1 << (-nBits)) - 1)
+  e >>= (-nBits)
+  nBits += mLen
+  for (; nBits > 0; m = (m * 256) + buffer[offset + i], i += d, nBits -= 8) {}
+
+  if (e === 0) {
+    e = 1 - eBias
+  } else if (e === eMax) {
+    return m ? NaN : ((s ? -1 : 1) * Infinity)
+  } else {
+    m = m + Math.pow(2, mLen)
+    e = e - eBias
+  }
+  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
+}
+
+exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
+  var e, m, c
+  var eLen = (nBytes * 8) - mLen - 1
+  var eMax = (1 << eLen) - 1
+  var eBias = eMax >> 1
+  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
+  var i = isLE ? 0 : (nBytes - 1)
+  var d = isLE ? 1 : -1
+  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0
+
+  value = Math.abs(value)
+
+  if (isNaN(value) || value === Infinity) {
+    m = isNaN(value) ? 1 : 0
+    e = eMax
+  } else {
+    e = Math.floor(Math.log(value) / Math.LN2)
+    if (value * (c = Math.pow(2, -e)) < 1) {
+      e--
+      c *= 2
+    }
+    if (e + eBias >= 1) {
+      value += rt / c
+    } else {
+      value += rt * Math.pow(2, 1 - eBias)
+    }
+    if (value * c >= 2) {
+      e++
+      c /= 2
+    }
+
+    if (e + eBias >= eMax) {
+      m = 0
+      e = eMax
+    } else if (e + eBias >= 1) {
+      m = ((value * c) - 1) * Math.pow(2, mLen)
+      e = e + eBias
+    } else {
+      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
+      e = 0
+    }
+  }
+
+  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}
+
+  e = (e << mLen) | m
+  eLen += mLen
+  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}
+
+  buffer[offset + i - d] |= s * 128
+}
+
+},{}],6:[function(require,module,exports){
+(function (process){(function (){
+// 'path' module extracted from Node.js v8.11.1 (only the posix part)
+// transplited with Babel
+
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+'use strict';
+
+function assertPath(path) {
+  if (typeof path !== 'string') {
+    throw new TypeError('Path must be a string. Received ' + JSON.stringify(path));
+  }
+}
+
+// Resolves . and .. elements in a path with directory names
+function normalizeStringPosix(path, allowAboveRoot) {
+  var res = '';
+  var lastSegmentLength = 0;
+  var lastSlash = -1;
+  var dots = 0;
+  var code;
+  for (var i = 0; i <= path.length; ++i) {
+    if (i < path.length)
+      code = path.charCodeAt(i);
+    else if (code === 47 /*/*/)
+      break;
+    else
+      code = 47 /*/*/;
+    if (code === 47 /*/*/) {
+      if (lastSlash === i - 1 || dots === 1) {
+        // NOOP
+      } else if (lastSlash !== i - 1 && dots === 2) {
+        if (res.length < 2 || lastSegmentLength !== 2 || res.charCodeAt(res.length - 1) !== 46 /*.*/ || res.charCodeAt(res.length - 2) !== 46 /*.*/) {
+          if (res.length > 2) {
+            var lastSlashIndex = res.lastIndexOf('/');
+            if (lastSlashIndex !== res.length - 1) {
+              if (lastSlashIndex === -1) {
+                res = '';
+                lastSegmentLength = 0;
+              } else {
+                res = res.slice(0, lastSlashIndex);
+                lastSegmentLength = res.length - 1 - res.lastIndexOf('/');
+              }
+              lastSlash = i;
+              dots = 0;
+              continue;
+            }
+          } else if (res.length === 2 || res.length === 1) {
+            res = '';
+            lastSegmentLength = 0;
+            lastSlash = i;
+            dots = 0;
+            continue;
+          }
+        }
+        if (allowAboveRoot) {
+          if (res.length > 0)
+            res += '/..';
+          else
+            res = '..';
+          lastSegmentLength = 2;
+        }
+      } else {
+        if (res.length > 0)
+          res += '/' + path.slice(lastSlash + 1, i);
+        else
+          res = path.slice(lastSlash + 1, i);
+        lastSegmentLength = i - lastSlash - 1;
+      }
+      lastSlash = i;
+      dots = 0;
+    } else if (code === 46 /*.*/ && dots !== -1) {
+      ++dots;
+    } else {
+      dots = -1;
+    }
+  }
+  return res;
+}
+
+function _format(sep, pathObject) {
+  var dir = pathObject.dir || pathObject.root;
+  var base = pathObject.base || (pathObject.name || '') + (pathObject.ext || '');
+  if (!dir) {
+    return base;
+  }
+  if (dir === pathObject.root) {
+    return dir + base;
+  }
+  return dir + sep + base;
+}
+
+var posix = {
+  // path.resolve([from ...], to)
+  resolve: function resolve() {
+    var resolvedPath = '';
+    var resolvedAbsolute = false;
+    var cwd;
+
+    for (var i = arguments.length - 1; i >= -1 && !resolvedAbsolute; i--) {
+      var path;
+      if (i >= 0)
+        path = arguments[i];
+      else {
+        if (cwd === undefined)
+          cwd = process.cwd();
+        path = cwd;
+      }
+
+      assertPath(path);
+
+      // Skip empty entries
+      if (path.length === 0) {
+        continue;
+      }
+
+      resolvedPath = path + '/' + resolvedPath;
+      resolvedAbsolute = path.charCodeAt(0) === 47 /*/*/;
+    }
+
+    // At this point the path should be resolved to a full absolute path, but
+    // handle relative paths to be safe (might happen when process.cwd() fails)
+
+    // Normalize the path
+    resolvedPath = normalizeStringPosix(resolvedPath, !resolvedAbsolute);
+
+    if (resolvedAbsolute) {
+      if (resolvedPath.length > 0)
+        return '/' + resolvedPath;
+      else
+        return '/';
+    } else if (resolvedPath.length > 0) {
+      return resolvedPath;
+    } else {
+      return '.';
+    }
+  },
+
+  normalize: function normalize(path) {
+    assertPath(path);
+
+    if (path.length === 0) return '.';
+
+    var isAbsolute = path.charCodeAt(0) === 47 /*/*/;
+    var trailingSeparator = path.charCodeAt(path.length - 1) === 47 /*/*/;
+
+    // Normalize the path
+    path = normalizeStringPosix(path, !isAbsolute);
+
+    if (path.length === 0 && !isAbsolute) path = '.';
+    if (path.length > 0 && trailingSeparator) path += '/';
+
+    if (isAbsolute) return '/' + path;
+    return path;
+  },
+
+  isAbsolute: function isAbsolute(path) {
+    assertPath(path);
+    return path.length > 0 && path.charCodeAt(0) === 47 /*/*/;
+  },
+
+  join: function join() {
+    if (arguments.length === 0)
+      return '.';
+    var joined;
+    for (var i = 0; i < arguments.length; ++i) {
+      var arg = arguments[i];
+      assertPath(arg);
+      if (arg.length > 0) {
+        if (joined === undefined)
+          joined = arg;
+        else
+          joined += '/' + arg;
+      }
+    }
+    if (joined === undefined)
+      return '.';
+    return posix.normalize(joined);
+  },
+
+  relative: function relative(from, to) {
+    assertPath(from);
+    assertPath(to);
+
+    if (from === to) return '';
+
+    from = posix.resolve(from);
+    to = posix.resolve(to);
+
+    if (from === to) return '';
+
+    // Trim any leading backslashes
+    var fromStart = 1;
+    for (; fromStart < from.length; ++fromStart) {
+      if (from.charCodeAt(fromStart) !== 47 /*/*/)
+        break;
+    }
+    var fromEnd = from.length;
+    var fromLen = fromEnd - fromStart;
+
+    // Trim any leading backslashes
+    var toStart = 1;
+    for (; toStart < to.length; ++toStart) {
+      if (to.charCodeAt(toStart) !== 47 /*/*/)
+        break;
+    }
+    var toEnd = to.length;
+    var toLen = toEnd - toStart;
+
+    // Compare paths to find the longest common path from root
+    var length = fromLen < toLen ? fromLen : toLen;
+    var lastCommonSep = -1;
+    var i = 0;
+    for (; i <= length; ++i) {
+      if (i === length) {
+        if (toLen > length) {
+          if (to.charCodeAt(toStart + i) === 47 /*/*/) {
+            // We get here if `from` is the exact base path for `to`.
+            // For example: from='/foo/bar'; to='/foo/bar/baz'
+            return to.slice(toStart + i + 1);
+          } else if (i === 0) {
+            // We get here if `from` is the root
+            // For example: from='/'; to='/foo'
+            return to.slice(toStart + i);
+          }
+        } else if (fromLen > length) {
+          if (from.charCodeAt(fromStart + i) === 47 /*/*/) {
+            // We get here if `to` is the exact base path for `from`.
+            // For example: from='/foo/bar/baz'; to='/foo/bar'
+            lastCommonSep = i;
+          } else if (i === 0) {
+            // We get here if `to` is the root.
+            // For example: from='/foo'; to='/'
+            lastCommonSep = 0;
+          }
+        }
+        break;
+      }
+      var fromCode = from.charCodeAt(fromStart + i);
+      var toCode = to.charCodeAt(toStart + i);
+      if (fromCode !== toCode)
+        break;
+      else if (fromCode === 47 /*/*/)
+        lastCommonSep = i;
+    }
+
+    var out = '';
+    // Generate the relative path based on the path difference between `to`
+    // and `from`
+    for (i = fromStart + lastCommonSep + 1; i <= fromEnd; ++i) {
+      if (i === fromEnd || from.charCodeAt(i) === 47 /*/*/) {
+        if (out.length === 0)
+          out += '..';
+        else
+          out += '/..';
+      }
+    }
+
+    // Lastly, append the rest of the destination (`to`) path that comes after
+    // the common path parts
+    if (out.length > 0)
+      return out + to.slice(toStart + lastCommonSep);
+    else {
+      toStart += lastCommonSep;
+      if (to.charCodeAt(toStart) === 47 /*/*/)
+        ++toStart;
+      return to.slice(toStart);
+    }
+  },
+
+  _makeLong: function _makeLong(path) {
+    return path;
+  },
+
+  dirname: function dirname(path) {
+    assertPath(path);
+    if (path.length === 0) return '.';
+    var code = path.charCodeAt(0);
+    var hasRoot = code === 47 /*/*/;
+    var end = -1;
+    var matchedSlash = true;
+    for (var i = path.length - 1; i >= 1; --i) {
+      code = path.charCodeAt(i);
+      if (code === 47 /*/*/) {
+          if (!matchedSlash) {
+            end = i;
+            break;
+          }
+        } else {
+        // We saw the first non-path separator
+        matchedSlash = false;
+      }
+    }
+
+    if (end === -1) return hasRoot ? '/' : '.';
+    if (hasRoot && end === 1) return '//';
+    return path.slice(0, end);
+  },
+
+  basename: function basename(path, ext) {
+    if (ext !== undefined && typeof ext !== 'string') throw new TypeError('"ext" argument must be a string');
+    assertPath(path);
+
+    var start = 0;
+    var end = -1;
+    var matchedSlash = true;
+    var i;
+
+    if (ext !== undefined && ext.length > 0 && ext.length <= path.length) {
+      if (ext.length === path.length && ext === path) return '';
+      var extIdx = ext.length - 1;
+      var firstNonSlashEnd = -1;
+      for (i = path.length - 1; i >= 0; --i) {
+        var code = path.charCodeAt(i);
+        if (code === 47 /*/*/) {
+            // If we reached a path separator that was not part of a set of path
+            // separators at the end of the string, stop now
+            if (!matchedSlash) {
+              start = i + 1;
+              break;
+            }
+          } else {
+          if (firstNonSlashEnd === -1) {
+            // We saw the first non-path separator, remember this index in case
+            // we need it if the extension ends up not matching
+            matchedSlash = false;
+            firstNonSlashEnd = i + 1;
+          }
+          if (extIdx >= 0) {
+            // Try to match the explicit extension
+            if (code === ext.charCodeAt(extIdx)) {
+              if (--extIdx === -1) {
+                // We matched the extension, so mark this as the end of our path
+                // component
+                end = i;
+              }
+            } else {
+              // Extension does not match, so our result is the entire path
+              // component
+              extIdx = -1;
+              end = firstNonSlashEnd;
+            }
+          }
+        }
+      }
+
+      if (start === end) end = firstNonSlashEnd;else if (end === -1) end = path.length;
+      return path.slice(start, end);
+    } else {
+      for (i = path.length - 1; i >= 0; --i) {
+        if (path.charCodeAt(i) === 47 /*/*/) {
+            // If we reached a path separator that was not part of a set of path
+            // separators at the end of the string, stop now
+            if (!matchedSlash) {
+              start = i + 1;
+              break;
+            }
+          } else if (end === -1) {
+          // We saw the first non-path separator, mark this as the end of our
+          // path component
+          matchedSlash = false;
+          end = i + 1;
+        }
+      }
+
+      if (end === -1) return '';
+      return path.slice(start, end);
+    }
+  },
+
+  extname: function extname(path) {
+    assertPath(path);
+    var startDot = -1;
+    var startPart = 0;
+    var end = -1;
+    var matchedSlash = true;
+    // Track the state of characters (if any) we see before our first dot and
+    // after any path separator we find
+    var preDotState = 0;
+    for (var i = path.length - 1; i >= 0; --i) {
+      var code = path.charCodeAt(i);
+      if (code === 47 /*/*/) {
+          // If we reached a path separator that was not part of a set of path
+          // separators at the end of the string, stop now
+          if (!matchedSlash) {
+            startPart = i + 1;
+            break;
+          }
+          continue;
+        }
+      if (end === -1) {
+        // We saw the first non-path separator, mark this as the end of our
+        // extension
+        matchedSlash = false;
+        end = i + 1;
+      }
+      if (code === 46 /*.*/) {
+          // If this is our first dot, mark it as the start of our extension
+          if (startDot === -1)
+            startDot = i;
+          else if (preDotState !== 1)
+            preDotState = 1;
+      } else if (startDot !== -1) {
+        // We saw a non-dot and non-path separator before our dot, so we should
+        // have a good chance at having a non-empty extension
+        preDotState = -1;
+      }
+    }
+
+    if (startDot === -1 || end === -1 ||
+        // We saw a non-dot character immediately before the dot
+        preDotState === 0 ||
+        // The (right-most) trimmed path component is exactly '..'
+        preDotState === 1 && startDot === end - 1 && startDot === startPart + 1) {
+      return '';
+    }
+    return path.slice(startDot, end);
+  },
+
+  format: function format(pathObject) {
+    if (pathObject === null || typeof pathObject !== 'object') {
+      throw new TypeError('The "pathObject" argument must be of type Object. Received type ' + typeof pathObject);
+    }
+    return _format('/', pathObject);
+  },
+
+  parse: function parse(path) {
+    assertPath(path);
+
+    var ret = { root: '', dir: '', base: '', ext: '', name: '' };
+    if (path.length === 0) return ret;
+    var code = path.charCodeAt(0);
+    var isAbsolute = code === 47 /*/*/;
+    var start;
+    if (isAbsolute) {
+      ret.root = '/';
+      start = 1;
+    } else {
+      start = 0;
+    }
+    var startDot = -1;
+    var startPart = 0;
+    var end = -1;
+    var matchedSlash = true;
+    var i = path.length - 1;
+
+    // Track the state of characters (if any) we see before our first dot and
+    // after any path separator we find
+    var preDotState = 0;
+
+    // Get non-dir info
+    for (; i >= start; --i) {
+      code = path.charCodeAt(i);
+      if (code === 47 /*/*/) {
+          // If we reached a path separator that was not part of a set of path
+          // separators at the end of the string, stop now
+          if (!matchedSlash) {
+            startPart = i + 1;
+            break;
+          }
+          continue;
+        }
+      if (end === -1) {
+        // We saw the first non-path separator, mark this as the end of our
+        // extension
+        matchedSlash = false;
+        end = i + 1;
+      }
+      if (code === 46 /*.*/) {
+          // If this is our first dot, mark it as the start of our extension
+          if (startDot === -1) startDot = i;else if (preDotState !== 1) preDotState = 1;
+        } else if (startDot !== -1) {
+        // We saw a non-dot and non-path separator before our dot, so we should
+        // have a good chance at having a non-empty extension
+        preDotState = -1;
+      }
+    }
+
+    if (startDot === -1 || end === -1 ||
+    // We saw a non-dot character immediately before the dot
+    preDotState === 0 ||
+    // The (right-most) trimmed path component is exactly '..'
+    preDotState === 1 && startDot === end - 1 && startDot === startPart + 1) {
+      if (end !== -1) {
+        if (startPart === 0 && isAbsolute) ret.base = ret.name = path.slice(1, end);else ret.base = ret.name = path.slice(startPart, end);
+      }
+    } else {
+      if (startPart === 0 && isAbsolute) {
+        ret.name = path.slice(1, startDot);
+        ret.base = path.slice(1, end);
+      } else {
+        ret.name = path.slice(startPart, startDot);
+        ret.base = path.slice(startPart, end);
+      }
+      ret.ext = path.slice(startDot, end);
+    }
+
+    if (startPart > 0) ret.dir = path.slice(0, startPart - 1);else if (isAbsolute) ret.dir = '/';
+
+    return ret;
+  },
+
+  sep: '/',
+  delimiter: ':',
+  win32: null,
+  posix: null
+};
+
+posix.posix = posix;
+
+module.exports = posix;
+
+}).call(this)}).call(this,require('_process'))
+},{"_process":7}],7:[function(require,module,exports){
+// shim for using process in browser
+var process = module.exports = {};
+
+// cached from whatever global is present so that test runners that stub it
+// don't break things.  But we need to wrap it in a try catch in case it is
+// wrapped in strict mode code which doesn't define any globals.  It's inside a
+// function because try/catches deoptimize in certain engines.
+
+var cachedSetTimeout;
+var cachedClearTimeout;
+
+function defaultSetTimout() {
+    throw new Error('setTimeout has not been defined');
+}
+function defaultClearTimeout () {
+    throw new Error('clearTimeout has not been defined');
+}
+(function () {
+    try {
+        if (typeof setTimeout === 'function') {
+            cachedSetTimeout = setTimeout;
+        } else {
+            cachedSetTimeout = defaultSetTimout;
+        }
+    } catch (e) {
+        cachedSetTimeout = defaultSetTimout;
+    }
+    try {
+        if (typeof clearTimeout === 'function') {
+            cachedClearTimeout = clearTimeout;
+        } else {
+            cachedClearTimeout = defaultClearTimeout;
+        }
+    } catch (e) {
+        cachedClearTimeout = defaultClearTimeout;
+    }
+} ())
+function runTimeout(fun) {
+    if (cachedSetTimeout === setTimeout) {
+        //normal enviroments in sane situations
+        return setTimeout(fun, 0);
+    }
+    // if setTimeout wasn't available but was latter defined
+    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
+        cachedSetTimeout = setTimeout;
+        return setTimeout(fun, 0);
+    }
+    try {
+        // when when somebody has screwed with setTimeout but no I.E. maddness
+        return cachedSetTimeout(fun, 0);
+    } catch(e){
+        try {
+            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
+            return cachedSetTimeout.call(null, fun, 0);
+        } catch(e){
+            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
+            return cachedSetTimeout.call(this, fun, 0);
+        }
+    }
+
+
+}
+function runClearTimeout(marker) {
+    if (cachedClearTimeout === clearTimeout) {
+        //normal enviroments in sane situations
+        return clearTimeout(marker);
+    }
+    // if clearTimeout wasn't available but was latter defined
+    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
+        cachedClearTimeout = clearTimeout;
+        return clearTimeout(marker);
+    }
+    try {
+        // when when somebody has screwed with setTimeout but no I.E. maddness
+        return cachedClearTimeout(marker);
+    } catch (e){
+        try {
+            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally
+            return cachedClearTimeout.call(null, marker);
+        } catch (e){
+            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
+            // Some versions of I.E. have different rules for clearTimeout vs setTimeout
+            return cachedClearTimeout.call(this, marker);
+        }
+    }
+
+
+
+}
+var queue = [];
+var draining = false;
+var currentQueue;
+var queueIndex = -1;
+
+function cleanUpNextTick() {
+    if (!draining || !currentQueue) {
+        return;
+    }
+    draining = false;
+    if (currentQueue.length) {
+        queue = currentQueue.concat(queue);
+    } else {
+        queueIndex = -1;
+    }
+    if (queue.length) {
+        drainQueue();
+    }
+}
+
+function drainQueue() {
+    if (draining) {
+        return;
+    }
+    var timeout = runTimeout(cleanUpNextTick);
+    draining = true;
+
+    var len = queue.length;
+    while(len) {
+        currentQueue = queue;
+        queue = [];
+        while (++queueIndex < len) {
+            if (currentQueue) {
+                currentQueue[queueIndex].run();
+            }
+        }
+        queueIndex = -1;
+        len = queue.length;
+    }
+    currentQueue = null;
+    draining = false;
+    runClearTimeout(timeout);
+}
+
+process.nextTick = function (fun) {
+    var args = new Array(arguments.length - 1);
+    if (arguments.length > 1) {
+        for (var i = 1; i < arguments.length; i++) {
+            args[i - 1] = arguments[i];
+        }
+    }
+    queue.push(new Item(fun, args));
+    if (queue.length === 1 && !draining) {
+        runTimeout(drainQueue);
+    }
+};
+
+// v8 likes predictible objects
+function Item(fun, array) {
+    this.fun = fun;
+    this.array = array;
+}
+Item.prototype.run = function () {
+    this.fun.apply(null, this.array);
+};
+process.title = 'browser';
+process.browser = true;
+process.env = {};
+process.argv = [];
+process.version = ''; // empty string to avoid regexp issues
+process.versions = {};
+
+function noop() {}
+
+process.on = noop;
+process.addListener = noop;
+process.once = noop;
+process.off = noop;
+process.removeListener = noop;
+process.removeAllListeners = noop;
+process.emit = noop;
+process.prependListener = noop;
+process.prependOnceListener = noop;
+
+process.listeners = function (name) { return [] }
+
+process.binding = function (name) {
+    throw new Error('process.binding is not supported');
+};
+
+process.cwd = function () { return '/' };
+process.chdir = function (dir) {
+    throw new Error('process.chdir is not supported');
+};
+process.umask = function() { return 0; };
+
+},{}],8:[function(require,module,exports){
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+
+var util = require('./util');
+var has = Object.prototype.hasOwnProperty;
+var hasNativeMap = typeof Map !== "undefined";
+
+/**
+ * A data structure which is a combination of an array and a set. Adding a new
+ * member is O(1), testing for membership is O(1), and finding the index of an
+ * element is O(1). Removing elements from the set is not supported. Only
+ * strings are supported for membership.
+ */
+function ArraySet() {
+  this._array = [];
+  this._set = hasNativeMap ? new Map() : Object.create(null);
+}
+
+/**
+ * Static method for creating ArraySet instances from an existing array.
+ */
+ArraySet.fromArray = function ArraySet_fromArray(aArray, aAllowDuplicates) {
+  var set = new ArraySet();
+  for (var i = 0, len = aArray.length; i < len; i++) {
+    set.add(aArray[i], aAllowDuplicates);
+  }
+  return set;
+};
+
+/**
+ * Return how many unique items are in this ArraySet. If duplicates have been
+ * added, than those do not count towards the size.
+ *
+ * @returns Number
+ */
+ArraySet.prototype.size = function ArraySet_size() {
+  return hasNativeMap ? this._set.size : Object.getOwnPropertyNames(this._set).length;
+};
+
+/**
+ * Add the given string to this set.
+ *
+ * @param String aStr
+ */
+ArraySet.prototype.add = function ArraySet_add(aStr, aAllowDuplicates) {
+  var sStr = hasNativeMap ? aStr : util.toSetString(aStr);
+  var isDuplicate = hasNativeMap ? this.has(aStr) : has.call(this._set, sStr);
+  var idx = this._array.length;
+  if (!isDuplicate || aAllowDuplicates) {
+    this._array.push(aStr);
+  }
+  if (!isDuplicate) {
+    if (hasNativeMap) {
+      this._set.set(aStr, idx);
+    } else {
+      this._set[sStr] = idx;
+    }
+  }
+};
+
+/**
+ * Is the given string a member of this set?
+ *
+ * @param String aStr
+ */
+ArraySet.prototype.has = function ArraySet_has(aStr) {
+  if (hasNativeMap) {
+    return this._set.has(aStr);
+  } else {
+    var sStr = util.toSetString(aStr);
+    return has.call(this._set, sStr);
+  }
+};
+
+/**
+ * What is the index of the given string in the array?
+ *
+ * @param String aStr
+ */
+ArraySet.prototype.indexOf = function ArraySet_indexOf(aStr) {
+  if (hasNativeMap) {
+    var idx = this._set.get(aStr);
+    if (idx >= 0) {
+        return idx;
+    }
+  } else {
+    var sStr = util.toSetString(aStr);
+    if (has.call(this._set, sStr)) {
+      return this._set[sStr];
+    }
+  }
+
+  throw new Error('"' + aStr + '" is not in the set.');
+};
+
+/**
+ * What is the element at the given index?
+ *
+ * @param Number aIdx
+ */
+ArraySet.prototype.at = function ArraySet_at(aIdx) {
+  if (aIdx >= 0 && aIdx < this._array.length) {
+    return this._array[aIdx];
+  }
+  throw new Error('No element indexed by ' + aIdx);
+};
+
+/**
+ * Returns the array representation of this set (which has the proper indices
+ * indicated by indexOf). Note that this is a copy of the internal array used
+ * for storing the members so that no one can mess with internal state.
+ */
+ArraySet.prototype.toArray = function ArraySet_toArray() {
+  return this._array.slice();
+};
+
+exports.ArraySet = ArraySet;
+
+},{"./util":17}],9:[function(require,module,exports){
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ *
+ * Based on the Base 64 VLQ implementation in Closure Compiler:
+ * https://code.google.com/p/closure-compiler/source/browse/trunk/src/com/google/debugging/sourcemap/Base64VLQ.java
+ *
+ * Copyright 2011 The Closure Compiler Authors. All rights reserved.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above
+ *    copyright notice, this list of conditions and the following
+ *    disclaimer in the documentation and/or other materials provided
+ *    with the distribution.
+ *  * Neither the name of Google Inc. nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+var base64 = require('./base64');
+
+// A single base 64 digit can contain 6 bits of data. For the base 64 variable
+// length quantities we use in the source map spec, the first bit is the sign,
+// the next four bits are the actual value, and the 6th bit is the
+// continuation bit. The continuation bit tells us whether there are more
+// digits in this value following this digit.
+//
+//   Continuation
+//   |    Sign
+//   |    |
+//   V    V
+//   101011
+
+var VLQ_BASE_SHIFT = 5;
+
+// binary: 100000
+var VLQ_BASE = 1 << VLQ_BASE_SHIFT;
+
+// binary: 011111
+var VLQ_BASE_MASK = VLQ_BASE - 1;
+
+// binary: 100000
+var VLQ_CONTINUATION_BIT = VLQ_BASE;
+
+/**
+ * Converts from a two-complement value to a value where the sign bit is
+ * placed in the least significant bit.  For example, as decimals:
+ *   1 becomes 2 (10 binary), -1 becomes 3 (11 binary)
+ *   2 becomes 4 (100 binary), -2 becomes 5 (101 binary)
+ */
+function toVLQSigned(aValue) {
+  return aValue < 0
+    ? ((-aValue) << 1) + 1
+    : (aValue << 1) + 0;
+}
+
+/**
+ * Converts to a two-complement value from a value where the sign bit is
+ * placed in the least significant bit.  For example, as decimals:
+ *   2 (10 binary) becomes 1, 3 (11 binary) becomes -1
+ *   4 (100 binary) becomes 2, 5 (101 binary) becomes -2
+ */
+function fromVLQSigned(aValue) {
+  var isNegative = (aValue & 1) === 1;
+  var shifted = aValue >> 1;
+  return isNegative
+    ? -shifted
+    : shifted;
+}
+
+/**
+ * Returns the base 64 VLQ encoded value.
+ */
+exports.encode = function base64VLQ_encode(aValue) {
+  var encoded = "";
+  var digit;
+
+  var vlq = toVLQSigned(aValue);
+
+  do {
+    digit = vlq & VLQ_BASE_MASK;
+    vlq >>>= VLQ_BASE_SHIFT;
+    if (vlq > 0) {
+      // There are still more digits in this value, so we must make sure the
+      // continuation bit is marked.
+      digit |= VLQ_CONTINUATION_BIT;
+    }
+    encoded += base64.encode(digit);
+  } while (vlq > 0);
+
+  return encoded;
+};
+
+/**
+ * Decodes the next base 64 VLQ value from the given string and returns the
+ * value and the rest of the string via the out parameter.
+ */
+exports.decode = function base64VLQ_decode(aStr, aIndex, aOutParam) {
+  var strLen = aStr.length;
+  var result = 0;
+  var shift = 0;
+  var continuation, digit;
+
+  do {
+    if (aIndex >= strLen) {
+      throw new Error("Expected more digits in base 64 VLQ value.");
+    }
+
+    digit = base64.decode(aStr.charCodeAt(aIndex++));
+    if (digit === -1) {
+      throw new Error("Invalid base64 digit: " + aStr.charAt(aIndex - 1));
+    }
+
+    continuation = !!(digit & VLQ_CONTINUATION_BIT);
+    digit &= VLQ_BASE_MASK;
+    result = result + (digit << shift);
+    shift += VLQ_BASE_SHIFT;
+  } while (continuation);
+
+  aOutParam.value = fromVLQSigned(result);
+  aOutParam.rest = aIndex;
+};
+
+},{"./base64":10}],10:[function(require,module,exports){
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+
+var intToCharMap = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'.split('');
+
+/**
+ * Encode an integer in the range of 0 to 63 to a single base 64 digit.
+ */
+exports.encode = function (number) {
+  if (0 <= number && number < intToCharMap.length) {
+    return intToCharMap[number];
+  }
+  throw new TypeError("Must be between 0 and 63: " + number);
+};
+
+/**
+ * Decode a single base 64 character code digit to an integer. Returns -1 on
+ * failure.
+ */
+exports.decode = function (charCode) {
+  var bigA = 65;     // 'A'
+  var bigZ = 90;     // 'Z'
+
+  var littleA = 97;  // 'a'
+  var littleZ = 122; // 'z'
+
+  var zero = 48;     // '0'
+  var nine = 57;     // '9'
+
+  var plus = 43;     // '+'
+  var slash = 47;    // '/'
+
+  var littleOffset = 26;
+  var numberOffset = 52;
+
+  // 0 - 25: ABCDEFGHIJKLMNOPQRSTUVWXYZ
+  if (bigA <= charCode && charCode <= bigZ) {
+    return (charCode - bigA);
+  }
+
+  // 26 - 51: abcdefghijklmnopqrstuvwxyz
+  if (littleA <= charCode && charCode <= littleZ) {
+    return (charCode - littleA + littleOffset);
+  }
+
+  // 52 - 61: 0123456789
+  if (zero <= charCode && charCode <= nine) {
+    return (charCode - zero + numberOffset);
+  }
+
+  // 62: +
+  if (charCode == plus) {
+    return 62;
+  }
+
+  // 63: /
+  if (charCode == slash) {
+    return 63;
+  }
+
+  // Invalid base64 digit.
+  return -1;
+};
+
+},{}],11:[function(require,module,exports){
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+
+exports.GREATEST_LOWER_BOUND = 1;
+exports.LEAST_UPPER_BOUND = 2;
+
+/**
+ * Recursive implementation of binary search.
+ *
+ * @param aLow Indices here and lower do not contain the needle.
+ * @param aHigh Indices here and higher do not contain the needle.
+ * @param aNeedle The element being searched for.
+ * @param aHaystack The non-empty array being searched.
+ * @param aCompare Function which takes two elements and returns -1, 0, or 1.
+ * @param aBias Either 'binarySearch.GREATEST_LOWER_BOUND' or
+ *     'binarySearch.LEAST_UPPER_BOUND'. Specifies whether to return the
+ *     closest element that is smaller than or greater than the one we are
+ *     searching for, respectively, if the exact element cannot be found.
+ */
+function recursiveSearch(aLow, aHigh, aNeedle, aHaystack, aCompare, aBias) {
+  // This function terminates when one of the following is true:
+  //
+  //   1. We find the exact element we are looking for.
+  //
+  //   2. We did not find the exact element, but we can return the index of
+  //      the next-closest element.
+  //
+  //   3. We did not find the exact element, and there is no next-closest
+  //      element than the one we are searching for, so we return -1.
+  var mid = Math.floor((aHigh - aLow) / 2) + aLow;
+  var cmp = aCompare(aNeedle, aHaystack[mid], true);
+  if (cmp === 0) {
+    // Found the element we are looking for.
+    return mid;
+  }
+  else if (cmp > 0) {
+    // Our needle is greater than aHaystack[mid].
+    if (aHigh - mid > 1) {
+      // The element is in the upper half.
+      return recursiveSearch(mid, aHigh, aNeedle, aHaystack, aCompare, aBias);
+    }
+
+    // The exact needle element was not found in this haystack. Determine if
+    // we are in termination case (3) or (2) and return the appropriate thing.
+    if (aBias == exports.LEAST_UPPER_BOUND) {
+      return aHigh < aHaystack.length ? aHigh : -1;
+    } else {
+      return mid;
+    }
+  }
+  else {
+    // Our needle is less than aHaystack[mid].
+    if (mid - aLow > 1) {
+      // The element is in the lower half.
+      return recursiveSearch(aLow, mid, aNeedle, aHaystack, aCompare, aBias);
+    }
+
+    // we are in termination case (3) or (2) and return the appropriate thing.
+    if (aBias == exports.LEAST_UPPER_BOUND) {
+      return mid;
+    } else {
+      return aLow < 0 ? -1 : aLow;
+    }
+  }
+}
+
+/**
+ * This is an implementation of binary search which will always try and return
+ * the index of the closest element if there is no exact hit. This is because
+ * mappings between original and generated line/col pairs are single points,
+ * and there is an implicit region between each of them, so a miss just means
+ * that you aren't on the very start of a region.
+ *
+ * @param aNeedle The element you are looking for.
+ * @param aHaystack The array that is being searched.
+ * @param aCompare A function which takes the needle and an element in the
+ *     array and returns -1, 0, or 1 depending on whether the needle is less
+ *     than, equal to, or greater than the element, respectively.
+ * @param aBias Either 'binarySearch.GREATEST_LOWER_BOUND' or
+ *     'binarySearch.LEAST_UPPER_BOUND'. Specifies whether to return the
+ *     closest element that is smaller than or greater than the one we are
+ *     searching for, respectively, if the exact element cannot be found.
+ *     Defaults to 'binarySearch.GREATEST_LOWER_BOUND'.
+ */
+exports.search = function search(aNeedle, aHaystack, aCompare, aBias) {
+  if (aHaystack.length === 0) {
+    return -1;
+  }
+
+  var index = recursiveSearch(-1, aHaystack.length, aNeedle, aHaystack,
+                              aCompare, aBias || exports.GREATEST_LOWER_BOUND);
+  if (index < 0) {
+    return -1;
+  }
+
+  // We have found either the exact element, or the next-closest element than
+  // the one we are searching for. However, there may be more than one such
+  // element. Make sure we always return the smallest of these.
+  while (index - 1 >= 0) {
+    if (aCompare(aHaystack[index], aHaystack[index - 1], true) !== 0) {
+      break;
+    }
+    --index;
+  }
+
+  return index;
+};
+
+},{}],12:[function(require,module,exports){
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2014 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+
+var util = require('./util');
+
+/**
+ * Determine whether mappingB is after mappingA with respect to generated
+ * position.
+ */
+function generatedPositionAfter(mappingA, mappingB) {
+  // Optimized for most common case
+  var lineA = mappingA.generatedLine;
+  var lineB = mappingB.generatedLine;
+  var columnA = mappingA.generatedColumn;
+  var columnB = mappingB.generatedColumn;
+  return lineB > lineA || lineB == lineA && columnB >= columnA ||
+         util.compareByGeneratedPositionsInflated(mappingA, mappingB) <= 0;
+}
+
+/**
+ * A data structure to provide a sorted view of accumulated mappings in a
+ * performance conscious manner. It trades a neglibable overhead in general
+ * case for a large speedup in case of mappings being added in order.
+ */
+function MappingList() {
+  this._array = [];
+  this._sorted = true;
+  // Serves as infimum
+  this._last = {generatedLine: -1, generatedColumn: 0};
+}
+
+/**
+ * Iterate through internal items. This method takes the same arguments that
+ * `Array.prototype.forEach` takes.
+ *
+ * NOTE: The order of the mappings is NOT guaranteed.
+ */
+MappingList.prototype.unsortedForEach =
+  function MappingList_forEach(aCallback, aThisArg) {
+    this._array.forEach(aCallback, aThisArg);
+  };
+
+/**
+ * Add the given source mapping.
+ *
+ * @param Object aMapping
+ */
+MappingList.prototype.add = function MappingList_add(aMapping) {
+  if (generatedPositionAfter(this._last, aMapping)) {
+    this._last = aMapping;
+    this._array.push(aMapping);
+  } else {
+    this._sorted = false;
+    this._array.push(aMapping);
+  }
+};
+
+/**
+ * Returns the flat, sorted array of mappings. The mappings are sorted by
+ * generated position.
+ *
+ * WARNING: This method returns internal data without copying, for
+ * performance. The return value must NOT be mutated, and should be treated as
+ * an immutable borrow. If you want to take ownership, you must make your own
+ * copy.
+ */
+MappingList.prototype.toArray = function MappingList_toArray() {
+  if (!this._sorted) {
+    this._array.sort(util.compareByGeneratedPositionsInflated);
+    this._sorted = true;
+  }
+  return this._array;
+};
+
+exports.MappingList = MappingList;
+
+},{"./util":17}],13:[function(require,module,exports){
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+
+// It turns out that some (most?) JavaScript engines don't self-host
+// `Array.prototype.sort`. This makes sense because C++ will likely remain
+// faster than JS when doing raw CPU-intensive sorting. However, when using a
+// custom comparator function, calling back and forth between the VM's C++ and
+// JIT'd JS is rather slow *and* loses JIT type information, resulting in
+// worse generated code for the comparator function than would be optimal. In
+// fact, when sorting with a comparator, these costs outweigh the benefits of
+// sorting in C++. By using our own JS-implemented Quick Sort (below), we get
+// a ~3500ms mean speed-up in `bench/bench.html`.
+
+/**
+ * Swap the elements indexed by `x` and `y` in the array `ary`.
+ *
+ * @param {Array} ary
+ *        The array.
+ * @param {Number} x
+ *        The index of the first item.
+ * @param {Number} y
+ *        The index of the second item.
+ */
+function swap(ary, x, y) {
+  var temp = ary[x];
+  ary[x] = ary[y];
+  ary[y] = temp;
+}
+
+/**
+ * Returns a random integer within the range `low .. high` inclusive.
+ *
+ * @param {Number} low
+ *        The lower bound on the range.
+ * @param {Number} high
+ *        The upper bound on the range.
+ */
+function randomIntInRange(low, high) {
+  return Math.round(low + (Math.random() * (high - low)));
+}
+
+/**
+ * The Quick Sort algorithm.
+ *
+ * @param {Array} ary
+ *        An array to sort.
+ * @param {function} comparator
+ *        Function to use to compare two items.
+ * @param {Number} p
+ *        Start index of the array
+ * @param {Number} r
+ *        End index of the array
+ */
+function doQuickSort(ary, comparator, p, r) {
+  // If our lower bound is less than our upper bound, we (1) partition the
+  // array into two pieces and (2) recurse on each half. If it is not, this is
+  // the empty array and our base case.
+
+  if (p < r) {
+    // (1) Partitioning.
+    //
+    // The partitioning chooses a pivot between `p` and `r` and moves all
+    // elements that are less than or equal to the pivot to the before it, and
+    // all the elements that are greater than it after it. The effect is that
+    // once partition is done, the pivot is in the exact place it will be when
+    // the array is put in sorted order, and it will not need to be moved
+    // again. This runs in O(n) time.
+
+    // Always choose a random pivot so that an input array which is reverse
+    // sorted does not cause O(n^2) running time.
+    var pivotIndex = randomIntInRange(p, r);
+    var i = p - 1;
+
+    swap(ary, pivotIndex, r);
+    var pivot = ary[r];
+
+    // Immediately after `j` is incremented in this loop, the following hold
+    // true:
+    //
+    //   * Every element in `ary[p .. i]` is less than or equal to the pivot.
+    //
+    //   * Every element in `ary[i+1 .. j-1]` is greater than the pivot.
+    for (var j = p; j < r; j++) {
+      if (comparator(ary[j], pivot) <= 0) {
+        i += 1;
+        swap(ary, i, j);
+      }
+    }
+
+    swap(ary, i + 1, j);
+    var q = i + 1;
+
+    // (2) Recurse on each half.
+
+    doQuickSort(ary, comparator, p, q - 1);
+    doQuickSort(ary, comparator, q + 1, r);
+  }
+}
+
+/**
+ * Sort the given array in-place with the given comparator function.
+ *
+ * @param {Array} ary
+ *        An array to sort.
+ * @param {function} comparator
+ *        Function to use to compare two items.
+ */
+exports.quickSort = function (ary, comparator) {
+  doQuickSort(ary, comparator, 0, ary.length - 1);
+};
+
+},{}],14:[function(require,module,exports){
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+
+var util = require('./util');
+var binarySearch = require('./binary-search');
+var ArraySet = require('./array-set').ArraySet;
+var base64VLQ = require('./base64-vlq');
+var quickSort = require('./quick-sort').quickSort;
+
+function SourceMapConsumer(aSourceMap) {
+  var sourceMap = aSourceMap;
+  if (typeof aSourceMap === 'string') {
+    sourceMap = JSON.parse(aSourceMap.replace(/^\)\]\}'/, ''));
+  }
+
+  return sourceMap.sections != null
+    ? new IndexedSourceMapConsumer(sourceMap)
+    : new BasicSourceMapConsumer(sourceMap);
+}
+
+SourceMapConsumer.fromSourceMap = function(aSourceMap) {
+  return BasicSourceMapConsumer.fromSourceMap(aSourceMap);
+}
+
+/**
+ * The version of the source mapping spec that we are consuming.
+ */
+SourceMapConsumer.prototype._version = 3;
+
+// `__generatedMappings` and `__originalMappings` are arrays that hold the
+// parsed mapping coordinates from the source map's "mappings" attribute. They
+// are lazily instantiated, accessed via the `_generatedMappings` and
+// `_originalMappings` getters respectively, and we only parse the mappings
+// and create these arrays once queried for a source location. We jump through
+// these hoops because there can be many thousands of mappings, and parsing
+// them is expensive, so we only want to do it if we must.
+//
+// Each object in the arrays is of the form:
+//
+//     {
+//       generatedLine: The line number in the generated code,
+//       generatedColumn: The column number in the generated code,
+//       source: The path to the original source file that generated this
+//               chunk of code,
+//       originalLine: The line number in the original source that
+//                     corresponds to this chunk of generated code,
+//       originalColumn: The column number in the original source that
+//                       corresponds to this chunk of generated code,
+//       name: The name of the original symbol which generated this chunk of
+//             code.
+//     }
+//
+// All properties except for `generatedLine` and `generatedColumn` can be
+// `null`.
+//
+// `_generatedMappings` is ordered by the generated positions.
+//
+// `_originalMappings` is ordered by the original positions.
+
+SourceMapConsumer.prototype.__generatedMappings = null;
+Object.defineProperty(SourceMapConsumer.prototype, '_generatedMappings', {
+  get: function () {
+    if (!this.__generatedMappings) {
+      this._parseMappings(this._mappings, this.sourceRoot);
+    }
+
+    return this.__generatedMappings;
+  }
+});
+
+SourceMapConsumer.prototype.__originalMappings = null;
+Object.defineProperty(SourceMapConsumer.prototype, '_originalMappings', {
+  get: function () {
+    if (!this.__originalMappings) {
+      this._parseMappings(this._mappings, this.sourceRoot);
+    }
+
+    return this.__originalMappings;
+  }
+});
+
+SourceMapConsumer.prototype._charIsMappingSeparator =
+  function SourceMapConsumer_charIsMappingSeparator(aStr, index) {
+    var c = aStr.charAt(index);
+    return c === ";" || c === ",";
+  };
+
+/**
+ * Parse the mappings in a string in to a data structure which we can easily
+ * query (the ordered arrays in the `this.__generatedMappings` and
+ * `this.__originalMappings` properties).
+ */
+SourceMapConsumer.prototype._parseMappings =
+  function SourceMapConsumer_parseMappings(aStr, aSourceRoot) {
+    throw new Error("Subclasses must implement _parseMappings");
+  };
+
+SourceMapConsumer.GENERATED_ORDER = 1;
+SourceMapConsumer.ORIGINAL_ORDER = 2;
+
+SourceMapConsumer.GREATEST_LOWER_BOUND = 1;
+SourceMapConsumer.LEAST_UPPER_BOUND = 2;
+
+/**
+ * Iterate over each mapping between an original source/line/column and a
+ * generated line/column in this source map.
+ *
+ * @param Function aCallback
+ *        The function that is called with each mapping.
+ * @param Object aContext
+ *        Optional. If specified, this object will be the value of `this` every
+ *        time that `aCallback` is called.
+ * @param aOrder
+ *        Either `SourceMapConsumer.GENERATED_ORDER` or
+ *        `SourceMapConsumer.ORIGINAL_ORDER`. Specifies whether you want to
+ *        iterate over the mappings sorted by the generated file's line/column
+ *        order or the original's source/line/column order, respectively. Defaults to
+ *        `SourceMapConsumer.GENERATED_ORDER`.
+ */
+SourceMapConsumer.prototype.eachMapping =
+  function SourceMapConsumer_eachMapping(aCallback, aContext, aOrder) {
+    var context = aContext || null;
+    var order = aOrder || SourceMapConsumer.GENERATED_ORDER;
+
+    var mappings;
+    switch (order) {
+    case SourceMapConsumer.GENERATED_ORDER:
+      mappings = this._generatedMappings;
+      break;
+    case SourceMapConsumer.ORIGINAL_ORDER:
+      mappings = this._originalMappings;
+      break;
+    default:
+      throw new Error("Unknown order of iteration.");
+    }
+
+    var sourceRoot = this.sourceRoot;
+    mappings.map(function (mapping) {
+      var source = mapping.source === null ? null : this._sources.at(mapping.source);
+      if (source != null && sourceRoot != null) {
+        source = util.join(sourceRoot, source);
+      }
+      return {
+        source: source,
+        generatedLine: mapping.generatedLine,
+        generatedColumn: mapping.generatedColumn,
+        originalLine: mapping.originalLine,
+        originalColumn: mapping.originalColumn,
+        name: mapping.name === null ? null : this._names.at(mapping.name)
+      };
+    }, this).forEach(aCallback, context);
+  };
+
+/**
+ * Returns all generated line and column information for the original source,
+ * line, and column provided. If no column is provided, returns all mappings
+ * corresponding to a either the line we are searching for or the next
+ * closest line that has any mappings. Otherwise, returns all mappings
+ * corresponding to the given line and either the column we are searching for
+ * or the next closest column that has any offsets.
+ *
+ * The only argument is an object with the following properties:
+ *
+ *   - source: The filename of the original source.
+ *   - line: The line number in the original source.
+ *   - column: Optional. the column number in the original source.
+ *
+ * and an array of objects is returned, each with the following properties:
+ *
+ *   - line: The line number in the generated source, or null.
+ *   - column: The column number in the generated source, or null.
+ */
+SourceMapConsumer.prototype.allGeneratedPositionsFor =
+  function SourceMapConsumer_allGeneratedPositionsFor(aArgs) {
+    var line = util.getArg(aArgs, 'line');
+
+    // When there is no exact match, BasicSourceMapConsumer.prototype._findMapping
+    // returns the index of the closest mapping less than the needle. By
+    // setting needle.originalColumn to 0, we thus find the last mapping for
+    // the given line, provided such a mapping exists.
+    var needle = {
+      source: util.getArg(aArgs, 'source'),
+      originalLine: line,
+      originalColumn: util.getArg(aArgs, 'column', 0)
+    };
+
+    if (this.sourceRoot != null) {
+      needle.source = util.relative(this.sourceRoot, needle.source);
+    }
+    if (!this._sources.has(needle.source)) {
+      return [];
+    }
+    needle.source = this._sources.indexOf(needle.source);
+
+    var mappings = [];
+
+    var index = this._findMapping(needle,
+                                  this._originalMappings,
+                                  "originalLine",
+                                  "originalColumn",
+                                  util.compareByOriginalPositions,
+                                  binarySearch.LEAST_UPPER_BOUND);
+    if (index >= 0) {
+      var mapping = this._originalMappings[index];
+
+      if (aArgs.column === undefined) {
+        var originalLine = mapping.originalLine;
+
+        // Iterate until either we run out of mappings, or we run into
+        // a mapping for a different line than the one we found. Since
+        // mappings are sorted, this is guaranteed to find all mappings for
+        // the line we found.
+        while (mapping && mapping.originalLine === originalLine) {
+          mappings.push({
+            line: util.getArg(mapping, 'generatedLine', null),
+            column: util.getArg(mapping, 'generatedColumn', null),
+            lastColumn: util.getArg(mapping, 'lastGeneratedColumn', null)
+          });
+
+          mapping = this._originalMappings[++index];
+        }
+      } else {
+        var originalColumn = mapping.originalColumn;
+
+        // Iterate until either we run out of mappings, or we run into
+        // a mapping for a different line than the one we were searching for.
+        // Since mappings are sorted, this is guaranteed to find all mappings for
+        // the line we are searching for.
+        while (mapping &&
+               mapping.originalLine === line &&
+               mapping.originalColumn == originalColumn) {
+          mappings.push({
+            line: util.getArg(mapping, 'generatedLine', null),
+            column: util.getArg(mapping, 'generatedColumn', null),
+            lastColumn: util.getArg(mapping, 'lastGeneratedColumn', null)
+          });
+
+          mapping = this._originalMappings[++index];
+        }
+      }
+    }
+
+    return mappings;
+  };
+
+exports.SourceMapConsumer = SourceMapConsumer;
+
+/**
+ * A BasicSourceMapConsumer instance represents a parsed source map which we can
+ * query for information about the original file positions by giving it a file
+ * position in the generated source.
+ *
+ * The only parameter is the raw source map (either as a JSON string, or
+ * already parsed to an object). According to the spec, source maps have the
+ * following attributes:
+ *
+ *   - version: Which version of the source map spec this map is following.
+ *   - sources: An array of URLs to the original source files.
+ *   - names: An array of identifiers which can be referrenced by individual mappings.
+ *   - sourceRoot: Optional. The URL root from which all sources are relative.
+ *   - sourcesContent: Optional. An array of contents of the original source files.
+ *   - mappings: A string of base64 VLQs which contain the actual mappings.
+ *   - file: Optional. The generated file this source map is associated with.
+ *
+ * Here is an example source map, taken from the source map spec[0]:
+ *
+ *     {
+ *       version : 3,
+ *       file: "out.js",
+ *       sourceRoot : "",
+ *       sources: ["foo.js", "bar.js"],
+ *       names: ["src", "maps", "are", "fun"],
+ *       mappings: "AA,AB;;ABCDE;"
+ *     }
+ *
+ * [0]: https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit?pli=1#
+ */
+function BasicSourceMapConsumer(aSourceMap) {
+  var sourceMap = aSourceMap;
+  if (typeof aSourceMap === 'string') {
+    sourceMap = JSON.parse(aSourceMap.replace(/^\)\]\}'/, ''));
+  }
+
+  var version = util.getArg(sourceMap, 'version');
+  var sources = util.getArg(sourceMap, 'sources');
+  // Sass 3.3 leaves out the 'names' array, so we deviate from the spec (which
+  // requires the array) to play nice here.
+  var names = util.getArg(sourceMap, 'names', []);
+  var sourceRoot = util.getArg(sourceMap, 'sourceRoot', null);
+  var sourcesContent = util.getArg(sourceMap, 'sourcesContent', null);
+  var mappings = util.getArg(sourceMap, 'mappings');
+  var file = util.getArg(sourceMap, 'file', null);
+
+  // Once again, Sass deviates from the spec and supplies the version as a
+  // string rather than a number, so we use loose equality checking here.
+  if (version != this._version) {
+    throw new Error('Unsupported version: ' + version);
+  }
+
+  sources = sources
+    .map(String)
+    // Some source maps produce relative source paths like "./foo.js" instead of
+    // "foo.js".  Normalize these first so that future comparisons will succeed.
+    // See bugzil.la/1090768.
+    .map(util.normalize)
+    // Always ensure that absolute sources are internally stored relative to
+    // the source root, if the source root is absolute. Not doing this would
+    // be particularly problematic when the source root is a prefix of the
+    // source (valid, but why??). See github issue #199 and bugzil.la/1188982.
+    .map(function (source) {
+      return sourceRoot && util.isAbsolute(sourceRoot) && util.isAbsolute(source)
+        ? util.relative(sourceRoot, source)
+        : source;
+    });
+
+  // Pass `true` below to allow duplicate names and sources. While source maps
+  // are intended to be compressed and deduplicated, the TypeScript compiler
+  // sometimes generates source maps with duplicates in them. See Github issue
+  // #72 and bugzil.la/889492.
+  this._names = ArraySet.fromArray(names.map(String), true);
+  this._sources = ArraySet.fromArray(sources, true);
+
+  this.sourceRoot = sourceRoot;
+  this.sourcesContent = sourcesContent;
+  this._mappings = mappings;
+  this.file = file;
+}
+
+BasicSourceMapConsumer.prototype = Object.create(SourceMapConsumer.prototype);
+BasicSourceMapConsumer.prototype.consumer = SourceMapConsumer;
+
+/**
+ * Create a BasicSourceMapConsumer from a SourceMapGenerator.
+ *
+ * @param SourceMapGenerator aSourceMap
+ *        The source map that will be consumed.
+ * @returns BasicSourceMapConsumer
+ */
+BasicSourceMapConsumer.fromSourceMap =
+  function SourceMapConsumer_fromSourceMap(aSourceMap) {
+    var smc = Object.create(BasicSourceMapConsumer.prototype);
+
+    var names = smc._names = ArraySet.fromArray(aSourceMap._names.toArray(), true);
+    var sources = smc._sources = ArraySet.fromArray(aSourceMap._sources.toArray(), true);
+    smc.sourceRoot = aSourceMap._sourceRoot;
+    smc.sourcesContent = aSourceMap._generateSourcesContent(smc._sources.toArray(),
+                                                            smc.sourceRoot);
+    smc.file = aSourceMap._file;
+
+    // Because we are modifying the entries (by converting string sources and
+    // names to indices into the sources and names ArraySets), we have to make
+    // a copy of the entry or else bad things happen. Shared mutable state
+    // strikes again! See github issue #191.
+
+    var generatedMappings = aSourceMap._mappings.toArray().slice();
+    var destGeneratedMappings = smc.__generatedMappings = [];
+    var destOriginalMappings = smc.__originalMappings = [];
+
+    for (var i = 0, length = generatedMappings.length; i < length; i++) {
+      var srcMapping = generatedMappings[i];
+      var destMapping = new Mapping;
+      destMapping.generatedLine = srcMapping.generatedLine;
+      destMapping.generatedColumn = srcMapping.generatedColumn;
+
+      if (srcMapping.source) {
+        destMapping.source = sources.indexOf(srcMapping.source);
+        destMapping.originalLine = srcMapping.originalLine;
+        destMapping.originalColumn = srcMapping.originalColumn;
+
+        if (srcMapping.name) {
+          destMapping.name = names.indexOf(srcMapping.name);
+        }
+
+        destOriginalMappings.push(destMapping);
+      }
+
+      destGeneratedMappings.push(destMapping);
+    }
+
+    quickSort(smc.__originalMappings, util.compareByOriginalPositions);
+
+    return smc;
+  };
+
+/**
+ * The version of the source mapping spec that we are consuming.
+ */
+BasicSourceMapConsumer.prototype._version = 3;
+
+/**
+ * The list of original sources.
+ */
+Object.defineProperty(BasicSourceMapConsumer.prototype, 'sources', {
+  get: function () {
+    return this._sources.toArray().map(function (s) {
+      return this.sourceRoot != null ? util.join(this.sourceRoot, s) : s;
+    }, this);
+  }
+});
+
+/**
+ * Provide the JIT with a nice shape / hidden class.
+ */
+function Mapping() {
+  this.generatedLine = 0;
+  this.generatedColumn = 0;
+  this.source = null;
+  this.originalLine = null;
+  this.originalColumn = null;
+  this.name = null;
+}
+
+/**
+ * Parse the mappings in a string in to a data structure which we can easily
+ * query (the ordered arrays in the `this.__generatedMappings` and
+ * `this.__originalMappings` properties).
+ */
+BasicSourceMapConsumer.prototype._parseMappings =
+  function SourceMapConsumer_parseMappings(aStr, aSourceRoot) {
+    var generatedLine = 1;
+    var previousGeneratedColumn = 0;
+    var previousOriginalLine = 0;
+    var previousOriginalColumn = 0;
+    var previousSource = 0;
+    var previousName = 0;
+    var length = aStr.length;
+    var index = 0;
+    var cachedSegments = {};
+    var temp = {};
+    var originalMappings = [];
+    var generatedMappings = [];
+    var mapping, str, segment, end, value;
+
+    while (index < length) {
+      if (aStr.charAt(index) === ';') {
+        generatedLine++;
+        index++;
+        previousGeneratedColumn = 0;
+      }
+      else if (aStr.charAt(index) === ',') {
+        index++;
+      }
+      else {
+        mapping = new Mapping();
+        mapping.generatedLine = generatedLine;
+
+        // Because each offset is encoded relative to the previous one,
+        // many segments often have the same encoding. We can exploit this
+        // fact by caching the parsed variable length fields of each segment,
+        // allowing us to avoid a second parse if we encounter the same
+        // segment again.
+        for (end = index; end < length; end++) {
+          if (this._charIsMappingSeparator(aStr, end)) {
+            break;
+          }
+        }
+        str = aStr.slice(index, end);
+
+        segment = cachedSegments[str];
+        if (segment) {
+          index += str.length;
+        } else {
+          segment = [];
+          while (index < end) {
+            base64VLQ.decode(aStr, index, temp);
+            value = temp.value;
+            index = temp.rest;
+            segment.push(value);
+          }
+
+          if (segment.length === 2) {
+            throw new Error('Found a source, but no line and column');
+          }
+
+          if (segment.length === 3) {
+            throw new Error('Found a source and line, but no column');
+          }
+
+          cachedSegments[str] = segment;
+        }
+
+        // Generated column.
+        mapping.generatedColumn = previousGeneratedColumn + segment[0];
+        previousGeneratedColumn = mapping.generatedColumn;
+
+        if (segment.length > 1) {
+          // Original source.
+          mapping.source = previousSource + segment[1];
+          previousSource += segment[1];
+
+          // Original line.
+          mapping.originalLine = previousOriginalLine + segment[2];
+          previousOriginalLine = mapping.originalLine;
+          // Lines are stored 0-based
+          mapping.originalLine += 1;
+
+          // Original column.
+          mapping.originalColumn = previousOriginalColumn + segment[3];
+          previousOriginalColumn = mapping.originalColumn;
+
+          if (segment.length > 4) {
+            // Original name.
+            mapping.name = previousName + segment[4];
+            previousName += segment[4];
+          }
+        }
+
+        generatedMappings.push(mapping);
+        if (typeof mapping.originalLine === 'number') {
+          originalMappings.push(mapping);
+        }
+      }
+    }
+
+    quickSort(generatedMappings, util.compareByGeneratedPositionsDeflated);
+    this.__generatedMappings = generatedMappings;
+
+    quickSort(originalMappings, util.compareByOriginalPositions);
+    this.__originalMappings = originalMappings;
+  };
+
+/**
+ * Find the mapping that best matches the hypothetical "needle" mapping that
+ * we are searching for in the given "haystack" of mappings.
+ */
+BasicSourceMapConsumer.prototype._findMapping =
+  function SourceMapConsumer_findMapping(aNeedle, aMappings, aLineName,
+                                         aColumnName, aComparator, aBias) {
+    // To return the position we are searching for, we must first find the
+    // mapping for the given position and then return the opposite position it
+    // points to. Because the mappings are sorted, we can use binary search to
+    // find the best mapping.
+
+    if (aNeedle[aLineName] <= 0) {
+      throw new TypeError('Line must be greater than or equal to 1, got '
+                          + aNeedle[aLineName]);
+    }
+    if (aNeedle[aColumnName] < 0) {
+      throw new TypeError('Column must be greater than or equal to 0, got '
+                          + aNeedle[aColumnName]);
+    }
+
+    return binarySearch.search(aNeedle, aMappings, aComparator, aBias);
+  };
+
+/**
+ * Compute the last column for each generated mapping. The last column is
+ * inclusive.
+ */
+BasicSourceMapConsumer.prototype.computeColumnSpans =
+  function SourceMapConsumer_computeColumnSpans() {
+    for (var index = 0; index < this._generatedMappings.length; ++index) {
+      var mapping = this._generatedMappings[index];
+
+      // Mappings do not contain a field for the last generated columnt. We
+      // can come up with an optimistic estimate, however, by assuming that
+      // mappings are contiguous (i.e. given two consecutive mappings, the
+      // first mapping ends where the second one starts).
+      if (index + 1 < this._generatedMappings.length) {
+        var nextMapping = this._generatedMappings[index + 1];
+
+        if (mapping.generatedLine === nextMapping.generatedLine) {
+          mapping.lastGeneratedColumn = nextMapping.generatedColumn - 1;
+          continue;
+        }
+      }
+
+      // The last mapping for each line spans the entire line.
+      mapping.lastGeneratedColumn = Infinity;
+    }
+  };
+
+/**
+ * Returns the original source, line, and column information for the generated
+ * source's line and column positions provided. The only argument is an object
+ * with the following properties:
+ *
+ *   - line: The line number in the generated source.
+ *   - column: The column number in the generated source.
+ *   - bias: Either 'SourceMapConsumer.GREATEST_LOWER_BOUND' or
+ *     'SourceMapConsumer.LEAST_UPPER_BOUND'. Specifies whether to return the
+ *     closest element that is smaller than or greater than the one we are
+ *     searching for, respectively, if the exact element cannot be found.
+ *     Defaults to 'SourceMapConsumer.GREATEST_LOWER_BOUND'.
+ *
+ * and an object is returned with the following properties:
+ *
+ *   - source: The original source file, or null.
+ *   - line: The line number in the original source, or null.
+ *   - column: The column number in the original source, or null.
+ *   - name: The original identifier, or null.
+ */
+BasicSourceMapConsumer.prototype.originalPositionFor =
+  function SourceMapConsumer_originalPositionFor(aArgs) {
+    var needle = {
+      generatedLine: util.getArg(aArgs, 'line'),
+      generatedColumn: util.getArg(aArgs, 'column')
+    };
+
+    var index = this._findMapping(
+      needle,
+      this._generatedMappings,
+      "generatedLine",
+      "generatedColumn",
+      util.compareByGeneratedPositionsDeflated,
+      util.getArg(aArgs, 'bias', SourceMapConsumer.GREATEST_LOWER_BOUND)
+    );
+
+    if (index >= 0) {
+      var mapping = this._generatedMappings[index];
+
+      if (mapping.generatedLine === needle.generatedLine) {
+        var source = util.getArg(mapping, 'source', null);
+        if (source !== null) {
+          source = this._sources.at(source);
+          if (this.sourceRoot != null) {
+            source = util.join(this.sourceRoot, source);
+          }
+        }
+        var name = util.getArg(mapping, 'name', null);
+        if (name !== null) {
+          name = this._names.at(name);
+        }
+        return {
+          source: source,
+          line: util.getArg(mapping, 'originalLine', null),
+          column: util.getArg(mapping, 'originalColumn', null),
+          name: name
+        };
+      }
+    }
+
+    return {
+      source: null,
+      line: null,
+      column: null,
+      name: null
+    };
+  };
+
+/**
+ * Return true if we have the source content for every source in the source
+ * map, false otherwise.
+ */
+BasicSourceMapConsumer.prototype.hasContentsOfAllSources =
+  function BasicSourceMapConsumer_hasContentsOfAllSources() {
+    if (!this.sourcesContent) {
+      return false;
+    }
+    return this.sourcesContent.length >= this._sources.size() &&
+      !this.sourcesContent.some(function (sc) { return sc == null; });
+  };
+
+/**
+ * Returns the original source content. The only argument is the url of the
+ * original source file. Returns null if no original source content is
+ * available.
+ */
+BasicSourceMapConsumer.prototype.sourceContentFor =
+  function SourceMapConsumer_sourceContentFor(aSource, nullOnMissing) {
+    if (!this.sourcesContent) {
+      return null;
+    }
+
+    if (this.sourceRoot != null) {
+      aSource = util.relative(this.sourceRoot, aSource);
+    }
+
+    if (this._sources.has(aSource)) {
+      return this.sourcesContent[this._sources.indexOf(aSource)];
+    }
+
+    var url;
+    if (this.sourceRoot != null
+        && (url = util.urlParse(this.sourceRoot))) {
+      // XXX: file:// URIs and absolute paths lead to unexpected behavior for
+      // many users. We can help them out when they expect file:// URIs to
+      // behave like it would if they were running a local HTTP server. See
+      // https://bugzilla.mozilla.org/show_bug.cgi?id=885597.
+      var fileUriAbsPath = aSource.replace(/^file:\/\//, "");
+      if (url.scheme == "file"
+          && this._sources.has(fileUriAbsPath)) {
+        return this.sourcesContent[this._sources.indexOf(fileUriAbsPath)]
+      }
+
+      if ((!url.path || url.path == "/")
+          && this._sources.has("/" + aSource)) {
+        return this.sourcesContent[this._sources.indexOf("/" + aSource)];
+      }
+    }
+
+    // This function is used recursively from
+    // IndexedSourceMapConsumer.prototype.sourceContentFor. In that case, we
+    // don't want to throw if we can't find the source - we just want to
+    // return null, so we provide a flag to exit gracefully.
+    if (nullOnMissing) {
+      return null;
+    }
+    else {
+      throw new Error('"' + aSource + '" is not in the SourceMap.');
+    }
+  };
+
+/**
+ * Returns the generated line and column information for the original source,
+ * line, and column positions provided. The only argument is an object with
+ * the following properties:
+ *
+ *   - source: The filename of the original source.
+ *   - line: The line number in the original source.
+ *   - column: The column number in the original source.
+ *   - bias: Either 'SourceMapConsumer.GREATEST_LOWER_BOUND' or
+ *     'SourceMapConsumer.LEAST_UPPER_BOUND'. Specifies whether to return the
+ *     closest element that is smaller than or greater than the one we are
+ *     searching for, respectively, if the exact element cannot be found.
+ *     Defaults to 'SourceMapConsumer.GREATEST_LOWER_BOUND'.
+ *
+ * and an object is returned with the following properties:
+ *
+ *   - line: The line number in the generated source, or null.
+ *   - column: The column number in the generated source, or null.
+ */
+BasicSourceMapConsumer.prototype.generatedPositionFor =
+  function SourceMapConsumer_generatedPositionFor(aArgs) {
+    var source = util.getArg(aArgs, 'source');
+    if (this.sourceRoot != null) {
+      source = util.relative(this.sourceRoot, source);
+    }
+    if (!this._sources.has(source)) {
+      return {
+        line: null,
+        column: null,
+        lastColumn: null
+      };
+    }
+    source = this._sources.indexOf(source);
+
+    var needle = {
+      source: source,
+      originalLine: util.getArg(aArgs, 'line'),
+      originalColumn: util.getArg(aArgs, 'column')
+    };
+
+    var index = this._findMapping(
+      needle,
+      this._originalMappings,
+      "originalLine",
+      "originalColumn",
+      util.compareByOriginalPositions,
+      util.getArg(aArgs, 'bias', SourceMapConsumer.GREATEST_LOWER_BOUND)
+    );
+
+    if (index >= 0) {
+      var mapping = this._originalMappings[index];
+
+      if (mapping.source === needle.source) {
+        return {
+          line: util.getArg(mapping, 'generatedLine', null),
+          column: util.getArg(mapping, 'generatedColumn', null),
+          lastColumn: util.getArg(mapping, 'lastGeneratedColumn', null)
+        };
+      }
+    }
+
+    return {
+      line: null,
+      column: null,
+      lastColumn: null
+    };
+  };
+
+exports.BasicSourceMapConsumer = BasicSourceMapConsumer;
+
+/**
+ * An IndexedSourceMapConsumer instance represents a parsed source map which
+ * we can query for information. It differs from BasicSourceMapConsumer in
+ * that it takes "indexed" source maps (i.e. ones with a "sections" field) as
+ * input.
+ *
+ * The only parameter is a raw source map (either as a JSON string, or already
+ * parsed to an object). According to the spec for indexed source maps, they
+ * have the following attributes:
+ *
+ *   - version: Which version of the source map spec this map is following.
+ *   - file: Optional. The generated file this source map is associated with.
+ *   - sections: A list of section definitions.
+ *
+ * Each value under the "sections" field has two fields:
+ *   - offset: The offset into the original specified at which this section
+ *       begins to apply, defined as an object with a "line" and "column"
+ *       field.
+ *   - map: A source map definition. This source map could also be indexed,
+ *       but doesn't have to be.
+ *
+ * Instead of the "map" field, it's also possible to have a "url" field
+ * specifying a URL to retrieve a source map from, but that's currently
+ * unsupported.
+ *
+ * Here's an example source map, taken from the source map spec[0], but
+ * modified to omit a section which uses the "url" field.
+ *
+ *  {
+ *    version : 3,
+ *    file: "app.js",
+ *    sections: [{
+ *      offset: {line:100, column:10},
+ *      map: {
+ *        version : 3,
+ *        file: "section.js",
+ *        sources: ["foo.js", "bar.js"],
+ *        names: ["src", "maps", "are", "fun"],
+ *        mappings: "AAAA,E;;ABCDE;"
+ *      }
+ *    }],
+ *  }
+ *
+ * [0]: https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit#heading=h.535es3xeprgt
+ */
+function IndexedSourceMapConsumer(aSourceMap) {
+  var sourceMap = aSourceMap;
+  if (typeof aSourceMap === 'string') {
+    sourceMap = JSON.parse(aSourceMap.replace(/^\)\]\}'/, ''));
+  }
+
+  var version = util.getArg(sourceMap, 'version');
+  var sections = util.getArg(sourceMap, 'sections');
+
+  if (version != this._version) {
+    throw new Error('Unsupported version: ' + version);
+  }
+
+  this._sources = new ArraySet();
+  this._names = new ArraySet();
+
+  var lastOffset = {
+    line: -1,
+    column: 0
+  };
+  this._sections = sections.map(function (s) {
+    if (s.url) {
+      // The url field will require support for asynchronicity.
+      // See https://github.com/mozilla/source-map/issues/16
+      throw new Error('Support for url field in sections not implemented.');
+    }
+    var offset = util.getArg(s, 'offset');
+    var offsetLine = util.getArg(offset, 'line');
+    var offsetColumn = util.getArg(offset, 'column');
+
+    if (offsetLine < lastOffset.line ||
+        (offsetLine === lastOffset.line && offsetColumn < lastOffset.column)) {
+      throw new Error('Section offsets must be ordered and non-overlapping.');
+    }
+    lastOffset = offset;
+
+    return {
+      generatedOffset: {
+        // The offset fields are 0-based, but we use 1-based indices when
+        // encoding/decoding from VLQ.
+        generatedLine: offsetLine + 1,
+        generatedColumn: offsetColumn + 1
+      },
+      consumer: new SourceMapConsumer(util.getArg(s, 'map'))
+    }
+  });
+}
+
+IndexedSourceMapConsumer.prototype = Object.create(SourceMapConsumer.prototype);
+IndexedSourceMapConsumer.prototype.constructor = SourceMapConsumer;
+
+/**
+ * The version of the source mapping spec that we are consuming.
+ */
+IndexedSourceMapConsumer.prototype._version = 3;
+
+/**
+ * The list of original sources.
+ */
+Object.defineProperty(IndexedSourceMapConsumer.prototype, 'sources', {
+  get: function () {
+    var sources = [];
+    for (var i = 0; i < this._sections.length; i++) {
+      for (var j = 0; j < this._sections[i].consumer.sources.length; j++) {
+        sources.push(this._sections[i].consumer.sources[j]);
+      }
+    }
+    return sources;
+  }
+});
+
+/**
+ * Returns the original source, line, and column information for the generated
+ * source's line and column positions provided. The only argument is an object
+ * with the following properties:
+ *
+ *   - line: The line number in the generated source.
+ *   - column: The column number in the generated source.
+ *
+ * and an object is returned with the following properties:
+ *
+ *   - source: The original source file, or null.
+ *   - line: The line number in the original source, or null.
+ *   - column: The column number in the original source, or null.
+ *   - name: The original identifier, or null.
+ */
+IndexedSourceMapConsumer.prototype.originalPositionFor =
+  function IndexedSourceMapConsumer_originalPositionFor(aArgs) {
+    var needle = {
+      generatedLine: util.getArg(aArgs, 'line'),
+      generatedColumn: util.getArg(aArgs, 'column')
+    };
+
+    // Find the section containing the generated position we're trying to map
+    // to an original position.
+    var sectionIndex = binarySearch.search(needle, this._sections,
+      function(needle, section) {
+        var cmp = needle.generatedLine - section.generatedOffset.generatedLine;
+        if (cmp) {
+          return cmp;
+        }
+
+        return (needle.generatedColumn -
+                section.generatedOffset.generatedColumn);
+      });
+    var section = this._sections[sectionIndex];
+
+    if (!section) {
+      return {
+        source: null,
+        line: null,
+        column: null,
+        name: null
+      };
+    }
+
+    return section.consumer.originalPositionFor({
+      line: needle.generatedLine -
+        (section.generatedOffset.generatedLine - 1),
+      column: needle.generatedColumn -
+        (section.generatedOffset.generatedLine === needle.generatedLine
+         ? section.generatedOffset.generatedColumn - 1
+         : 0),
+      bias: aArgs.bias
+    });
+  };
+
+/**
+ * Return true if we have the source content for every source in the source
+ * map, false otherwise.
+ */
+IndexedSourceMapConsumer.prototype.hasContentsOfAllSources =
+  function IndexedSourceMapConsumer_hasContentsOfAllSources() {
+    return this._sections.every(function (s) {
+      return s.consumer.hasContentsOfAllSources();
+    });
+  };
+
+/**
+ * Returns the original source content. The only argument is the url of the
+ * original source file. Returns null if no original source content is
+ * available.
+ */
+IndexedSourceMapConsumer.prototype.sourceContentFor =
+  function IndexedSourceMapConsumer_sourceContentFor(aSource, nullOnMissing) {
+    for (var i = 0; i < this._sections.length; i++) {
+      var section = this._sections[i];
+
+      var content = section.consumer.sourceContentFor(aSource, true);
+      if (content) {
+        return content;
+      }
+    }
+    if (nullOnMissing) {
+      return null;
+    }
+    else {
+      throw new Error('"' + aSource + '" is not in the SourceMap.');
+    }
+  };
+
+/**
+ * Returns the generated line and column information for the original source,
+ * line, and column positions provided. The only argument is an object with
+ * the following properties:
+ *
+ *   - source: The filename of the original source.
+ *   - line: The line number in the original source.
+ *   - column: The column number in the original source.
+ *
+ * and an object is returned with the following properties:
+ *
+ *   - line: The line number in the generated source, or null.
+ *   - column: The column number in the generated source, or null.
+ */
+IndexedSourceMapConsumer.prototype.generatedPositionFor =
+  function IndexedSourceMapConsumer_generatedPositionFor(aArgs) {
+    for (var i = 0; i < this._sections.length; i++) {
+      var section = this._sections[i];
+
+      // Only consider this section if the requested source is in the list of
+      // sources of the consumer.
+      if (section.consumer.sources.indexOf(util.getArg(aArgs, 'source')) === -1) {
+        continue;
+      }
+      var generatedPosition = section.consumer.generatedPositionFor(aArgs);
+      if (generatedPosition) {
+        var ret = {
+          line: generatedPosition.line +
+            (section.generatedOffset.generatedLine - 1),
+          column: generatedPosition.column +
+            (section.generatedOffset.generatedLine === generatedPosition.line
+             ? section.generatedOffset.generatedColumn - 1
+             : 0)
+        };
+        return ret;
+      }
+    }
+
+    return {
+      line: null,
+      column: null
+    };
+  };
+
+/**
+ * Parse the mappings in a string in to a data structure which we can easily
+ * query (the ordered arrays in the `this.__generatedMappings` and
+ * `this.__originalMappings` properties).
+ */
+IndexedSourceMapConsumer.prototype._parseMappings =
+  function IndexedSourceMapConsumer_parseMappings(aStr, aSourceRoot) {
+    this.__generatedMappings = [];
+    this.__originalMappings = [];
+    for (var i = 0; i < this._sections.length; i++) {
+      var section = this._sections[i];
+      var sectionMappings = section.consumer._generatedMappings;
+      for (var j = 0; j < sectionMappings.length; j++) {
+        var mapping = sectionMappings[j];
+
+        var source = section.consumer._sources.at(mapping.source);
+        if (section.consumer.sourceRoot !== null) {
+          source = util.join(section.consumer.sourceRoot, source);
+        }
+        this._sources.add(source);
+        source = this._sources.indexOf(source);
+
+        var name = section.consumer._names.at(mapping.name);
+        this._names.add(name);
+        name = this._names.indexOf(name);
+
+        // The mappings coming from the consumer for the section have
+        // generated positions relative to the start of the section, so we
+        // need to offset them to be relative to the start of the concatenated
+        // generated file.
+        var adjustedMapping = {
+          source: source,
+          generatedLine: mapping.generatedLine +
+            (section.generatedOffset.generatedLine - 1),
+          generatedColumn: mapping.generatedColumn +
+            (section.generatedOffset.generatedLine === mapping.generatedLine
+            ? section.generatedOffset.generatedColumn - 1
+            : 0),
+          originalLine: mapping.originalLine,
+          originalColumn: mapping.originalColumn,
+          name: name
+        };
+
+        this.__generatedMappings.push(adjustedMapping);
+        if (typeof adjustedMapping.originalLine === 'number') {
+          this.__originalMappings.push(adjustedMapping);
+        }
+      }
+    }
+
+    quickSort(this.__generatedMappings, util.compareByGeneratedPositionsDeflated);
+    quickSort(this.__originalMappings, util.compareByOriginalPositions);
+  };
+
+exports.IndexedSourceMapConsumer = IndexedSourceMapConsumer;
+
+},{"./array-set":8,"./base64-vlq":9,"./binary-search":11,"./quick-sort":13,"./util":17}],15:[function(require,module,exports){
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+
+var base64VLQ = require('./base64-vlq');
+var util = require('./util');
+var ArraySet = require('./array-set').ArraySet;
+var MappingList = require('./mapping-list').MappingList;
+
+/**
+ * An instance of the SourceMapGenerator represents a source map which is
+ * being built incrementally. You may pass an object with the following
+ * properties:
+ *
+ *   - file: The filename of the generated source.
+ *   - sourceRoot: A root for all relative URLs in this source map.
+ */
+function SourceMapGenerator(aArgs) {
+  if (!aArgs) {
+    aArgs = {};
+  }
+  this._file = util.getArg(aArgs, 'file', null);
+  this._sourceRoot = util.getArg(aArgs, 'sourceRoot', null);
+  this._skipValidation = util.getArg(aArgs, 'skipValidation', false);
+  this._sources = new ArraySet();
+  this._names = new ArraySet();
+  this._mappings = new MappingList();
+  this._sourcesContents = null;
+}
+
+SourceMapGenerator.prototype._version = 3;
+
+/**
+ * Creates a new SourceMapGenerator based on a SourceMapConsumer
+ *
+ * @param aSourceMapConsumer The SourceMap.
+ */
+SourceMapGenerator.fromSourceMap =
+  function SourceMapGenerator_fromSourceMap(aSourceMapConsumer) {
+    var sourceRoot = aSourceMapConsumer.sourceRoot;
+    var generator = new SourceMapGenerator({
+      file: aSourceMapConsumer.file,
+      sourceRoot: sourceRoot
+    });
+    aSourceMapConsumer.eachMapping(function (mapping) {
+      var newMapping = {
+        generated: {
+          line: mapping.generatedLine,
+          column: mapping.generatedColumn
+        }
+      };
+
+      if (mapping.source != null) {
+        newMapping.source = mapping.source;
+        if (sourceRoot != null) {
+          newMapping.source = util.relative(sourceRoot, newMapping.source);
+        }
+
+        newMapping.original = {
+          line: mapping.originalLine,
+          column: mapping.originalColumn
+        };
+
+        if (mapping.name != null) {
+          newMapping.name = mapping.name;
+        }
+      }
+
+      generator.addMapping(newMapping);
+    });
+    aSourceMapConsumer.sources.forEach(function (sourceFile) {
+      var content = aSourceMapConsumer.sourceContentFor(sourceFile);
+      if (content != null) {
+        generator.setSourceContent(sourceFile, content);
+      }
+    });
+    return generator;
+  };
+
+/**
+ * Add a single mapping from original source line and column to the generated
+ * source's line and column for this source map being created. The mapping
+ * object should have the following properties:
+ *
+ *   - generated: An object with the generated line and column positions.
+ *   - original: An object with the original line and column positions.
+ *   - source: The original source file (relative to the sourceRoot).
+ *   - name: An optional original token name for this mapping.
+ */
+SourceMapGenerator.prototype.addMapping =
+  function SourceMapGenerator_addMapping(aArgs) {
+    var generated = util.getArg(aArgs, 'generated');
+    var original = util.getArg(aArgs, 'original', null);
+    var source = util.getArg(aArgs, 'source', null);
+    var name = util.getArg(aArgs, 'name', null);
+
+    if (!this._skipValidation) {
+      this._validateMapping(generated, original, source, name);
+    }
+
+    if (source != null) {
+      source = String(source);
+      if (!this._sources.has(source)) {
+        this._sources.add(source);
+      }
+    }
+
+    if (name != null) {
+      name = String(name);
+      if (!this._names.has(name)) {
+        this._names.add(name);
+      }
+    }
+
+    this._mappings.add({
+      generatedLine: generated.line,
+      generatedColumn: generated.column,
+      originalLine: original != null && original.line,
+      originalColumn: original != null && original.column,
+      source: source,
+      name: name
+    });
+  };
+
+/**
+ * Set the source content for a source file.
+ */
+SourceMapGenerator.prototype.setSourceContent =
+  function SourceMapGenerator_setSourceContent(aSourceFile, aSourceContent) {
+    var source = aSourceFile;
+    if (this._sourceRoot != null) {
+      source = util.relative(this._sourceRoot, source);
+    }
+
+    if (aSourceContent != null) {
+      // Add the source content to the _sourcesContents map.
+      // Create a new _sourcesContents map if the property is null.
+      if (!this._sourcesContents) {
+        this._sourcesContents = Object.create(null);
+      }
+      this._sourcesContents[util.toSetString(source)] = aSourceContent;
+    } else if (this._sourcesContents) {
+      // Remove the source file from the _sourcesContents map.
+      // If the _sourcesContents map is empty, set the property to null.
+      delete this._sourcesContents[util.toSetString(source)];
+      if (Object.keys(this._sourcesContents).length === 0) {
+        this._sourcesContents = null;
+      }
+    }
+  };
+
+/**
+ * Applies the mappings of a sub-source-map for a specific source file to the
+ * source map being generated. Each mapping to the supplied source file is
+ * rewritten using the supplied source map. Note: The resolution for the
+ * resulting mappings is the minimium of this map and the supplied map.
+ *
+ * @param aSourceMapConsumer The source map to be applied.
+ * @param aSourceFile Optional. The filename of the source file.
+ *        If omitted, SourceMapConsumer's file property will be used.
+ * @param aSourceMapPath Optional. The dirname of the path to the source map
+ *        to be applied. If relative, it is relative to the SourceMapConsumer.
+ *        This parameter is needed when the two source maps aren't in the same
+ *        directory, and the source map to be applied contains relative source
+ *        paths. If so, those relative source paths need to be rewritten
+ *        relative to the SourceMapGenerator.
+ */
+SourceMapGenerator.prototype.applySourceMap =
+  function SourceMapGenerator_applySourceMap(aSourceMapConsumer, aSourceFile, aSourceMapPath) {
+    var sourceFile = aSourceFile;
+    // If aSourceFile is omitted, we will use the file property of the SourceMap
+    if (aSourceFile == null) {
+      if (aSourceMapConsumer.file == null) {
+        throw new Error(
+          'SourceMapGenerator.prototype.applySourceMap requires either an explicit source file, ' +
+          'or the source map\'s "file" property. Both were omitted.'
+        );
+      }
+      sourceFile = aSourceMapConsumer.file;
+    }
+    var sourceRoot = this._sourceRoot;
+    // Make "sourceFile" relative if an absolute Url is passed.
+    if (sourceRoot != null) {
+      sourceFile = util.relative(sourceRoot, sourceFile);
+    }
+    // Applying the SourceMap can add and remove items from the sources and
+    // the names array.
+    var newSources = new ArraySet();
+    var newNames = new ArraySet();
+
+    // Find mappings for the "sourceFile"
+    this._mappings.unsortedForEach(function (mapping) {
+      if (mapping.source === sourceFile && mapping.originalLine != null) {
+        // Check if it can be mapped by the source map, then update the mapping.
+        var original = aSourceMapConsumer.originalPositionFor({
+          line: mapping.originalLine,
+          column: mapping.originalColumn
+        });
+        if (original.source != null) {
+          // Copy mapping
+          mapping.source = original.source;
+          if (aSourceMapPath != null) {
+            mapping.source = util.join(aSourceMapPath, mapping.source)
+          }
+          if (sourceRoot != null) {
+            mapping.source = util.relative(sourceRoot, mapping.source);
+          }
+          mapping.originalLine = original.line;
+          mapping.originalColumn = original.column;
+          if (original.name != null) {
+            mapping.name = original.name;
+          }
+        }
+      }
+
+      var source = mapping.source;
+      if (source != null && !newSources.has(source)) {
+        newSources.add(source);
+      }
+
+      var name = mapping.name;
+      if (name != null && !newNames.has(name)) {
+        newNames.add(name);
+      }
+
+    }, this);
+    this._sources = newSources;
+    this._names = newNames;
+
+    // Copy sourcesContents of applied map.
+    aSourceMapConsumer.sources.forEach(function (sourceFile) {
+      var content = aSourceMapConsumer.sourceContentFor(sourceFile);
+      if (content != null) {
+        if (aSourceMapPath != null) {
+          sourceFile = util.join(aSourceMapPath, sourceFile);
+        }
+        if (sourceRoot != null) {
+          sourceFile = util.relative(sourceRoot, sourceFile);
+        }
+        this.setSourceContent(sourceFile, content);
+      }
+    }, this);
+  };
+
+/**
+ * A mapping can have one of the three levels of data:
+ *
+ *   1. Just the generated position.
+ *   2. The Generated position, original position, and original source.
+ *   3. Generated and original position, original source, as well as a name
+ *      token.
+ *
+ * To maintain consistency, we validate that any new mapping being added falls
+ * in to one of these categories.
+ */
+SourceMapGenerator.prototype._validateMapping =
+  function SourceMapGenerator_validateMapping(aGenerated, aOriginal, aSource,
+                                              aName) {
+    // When aOriginal is truthy but has empty values for .line and .column,
+    // it is most likely a programmer error. In this case we throw a very
+    // specific error message to try to guide them the right way.
+    // For example: https://github.com/Polymer/polymer-bundler/pull/519
+    if (aOriginal && typeof aOriginal.line !== 'number' && typeof aOriginal.column !== 'number') {
+        throw new Error(
+            'original.line and original.column are not numbers -- you probably meant to omit ' +
+            'the original mapping entirely and only map the generated position. If so, pass ' +
+            'null for the original mapping instead of an object with empty or null values.'
+        );
+    }
+
+    if (aGenerated && 'line' in aGenerated && 'column' in aGenerated
+        && aGenerated.line > 0 && aGenerated.column >= 0
+        && !aOriginal && !aSource && !aName) {
+      // Case 1.
+      return;
+    }
+    else if (aGenerated && 'line' in aGenerated && 'column' in aGenerated
+             && aOriginal && 'line' in aOriginal && 'column' in aOriginal
+             && aGenerated.line > 0 && aGenerated.column >= 0
+             && aOriginal.line > 0 && aOriginal.column >= 0
+             && aSource) {
+      // Cases 2 and 3.
+      return;
+    }
+    else {
+      throw new Error('Invalid mapping: ' + JSON.stringify({
+        generated: aGenerated,
+        source: aSource,
+        original: aOriginal,
+        name: aName
+      }));
+    }
+  };
+
+/**
+ * Serialize the accumulated mappings in to the stream of base 64 VLQs
+ * specified by the source map format.
+ */
+SourceMapGenerator.prototype._serializeMappings =
+  function SourceMapGenerator_serializeMappings() {
+    var previousGeneratedColumn = 0;
+    var previousGeneratedLine = 1;
+    var previousOriginalColumn = 0;
+    var previousOriginalLine = 0;
+    var previousName = 0;
+    var previousSource = 0;
+    var result = '';
+    var next;
+    var mapping;
+    var nameIdx;
+    var sourceIdx;
+
+    var mappings = this._mappings.toArray();
+    for (var i = 0, len = mappings.length; i < len; i++) {
+      mapping = mappings[i];
+      next = ''
+
+      if (mapping.generatedLine !== previousGeneratedLine) {
+        previousGeneratedColumn = 0;
+        while (mapping.generatedLine !== previousGeneratedLine) {
+          next += ';';
+          previousGeneratedLine++;
+        }
+      }
+      else {
+        if (i > 0) {
+          if (!util.compareByGeneratedPositionsInflated(mapping, mappings[i - 1])) {
+            continue;
+          }
+          next += ',';
+        }
+      }
+
+      next += base64VLQ.encode(mapping.generatedColumn
+                                 - previousGeneratedColumn);
+      previousGeneratedColumn = mapping.generatedColumn;
+
+      if (mapping.source != null) {
+        sourceIdx = this._sources.indexOf(mapping.source);
+        next += base64VLQ.encode(sourceIdx - previousSource);
+        previousSource = sourceIdx;
+
+        // lines are stored 0-based in SourceMap spec version 3
+        next += base64VLQ.encode(mapping.originalLine - 1
+                                   - previousOriginalLine);
+        previousOriginalLine = mapping.originalLine - 1;
+
+        next += base64VLQ.encode(mapping.originalColumn
+                                   - previousOriginalColumn);
+        previousOriginalColumn = mapping.originalColumn;
+
+        if (mapping.name != null) {
+          nameIdx = this._names.indexOf(mapping.name);
+          next += base64VLQ.encode(nameIdx - previousName);
+          previousName = nameIdx;
+        }
+      }
+
+      result += next;
+    }
+
+    return result;
+  };
+
+SourceMapGenerator.prototype._generateSourcesContent =
+  function SourceMapGenerator_generateSourcesContent(aSources, aSourceRoot) {
+    return aSources.map(function (source) {
+      if (!this._sourcesContents) {
+        return null;
+      }
+      if (aSourceRoot != null) {
+        source = util.relative(aSourceRoot, source);
+      }
+      var key = util.toSetString(source);
+      return Object.prototype.hasOwnProperty.call(this._sourcesContents, key)
+        ? this._sourcesContents[key]
+        : null;
+    }, this);
+  };
+
+/**
+ * Externalize the source map.
+ */
+SourceMapGenerator.prototype.toJSON =
+  function SourceMapGenerator_toJSON() {
+    var map = {
+      version: this._version,
+      sources: this._sources.toArray(),
+      names: this._names.toArray(),
+      mappings: this._serializeMappings()
+    };
+    if (this._file != null) {
+      map.file = this._file;
+    }
+    if (this._sourceRoot != null) {
+      map.sourceRoot = this._sourceRoot;
+    }
+    if (this._sourcesContents) {
+      map.sourcesContent = this._generateSourcesContent(map.sources, map.sourceRoot);
+    }
+
+    return map;
+  };
+
+/**
+ * Render the source map being generated to a string.
+ */
+SourceMapGenerator.prototype.toString =
+  function SourceMapGenerator_toString() {
+    return JSON.stringify(this.toJSON());
+  };
+
+exports.SourceMapGenerator = SourceMapGenerator;
+
+},{"./array-set":8,"./base64-vlq":9,"./mapping-list":12,"./util":17}],16:[function(require,module,exports){
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+
+var SourceMapGenerator = require('./source-map-generator').SourceMapGenerator;
+var util = require('./util');
+
+// Matches a Windows-style `\r\n` newline or a `\n` newline used by all other
+// operating systems these days (capturing the result).
+var REGEX_NEWLINE = /(\r?\n)/;
+
+// Newline character code for charCodeAt() comparisons
+var NEWLINE_CODE = 10;
+
+// Private symbol for identifying `SourceNode`s when multiple versions of
+// the source-map library are loaded. This MUST NOT CHANGE across
+// versions!
+var isSourceNode = "$$$isSourceNode$$$";
+
+/**
+ * SourceNodes provide a way to abstract over interpolating/concatenating
+ * snippets of generated JavaScript source code while maintaining the line and
+ * column information associated with the original source code.
+ *
+ * @param aLine The original line number.
+ * @param aColumn The original column number.
+ * @param aSource The original source's filename.
+ * @param aChunks Optional. An array of strings which are snippets of
+ *        generated JS, or other SourceNodes.
+ * @param aName The original identifier.
+ */
+function SourceNode(aLine, aColumn, aSource, aChunks, aName) {
+  this.children = [];
+  this.sourceContents = {};
+  this.line = aLine == null ? null : aLine;
+  this.column = aColumn == null ? null : aColumn;
+  this.source = aSource == null ? null : aSource;
+  this.name = aName == null ? null : aName;
+  this[isSourceNode] = true;
+  if (aChunks != null) this.add(aChunks);
+}
+
+/**
+ * Creates a SourceNode from generated code and a SourceMapConsumer.
+ *
+ * @param aGeneratedCode The generated code
+ * @param aSourceMapConsumer The SourceMap for the generated code
+ * @param aRelativePath Optional. The path that relative sources in the
+ *        SourceMapConsumer should be relative to.
+ */
+SourceNode.fromStringWithSourceMap =
+  function SourceNode_fromStringWithSourceMap(aGeneratedCode, aSourceMapConsumer, aRelativePath) {
+    // The SourceNode we want to fill with the generated code
+    // and the SourceMap
+    var node = new SourceNode();
+
+    // All even indices of this array are one line of the generated code,
+    // while all odd indices are the newlines between two adjacent lines
+    // (since `REGEX_NEWLINE` captures its match).
+    // Processed fragments are accessed by calling `shiftNextLine`.
+    var remainingLines = aGeneratedCode.split(REGEX_NEWLINE);
+    var remainingLinesIndex = 0;
+    var shiftNextLine = function() {
+      var lineContents = getNextLine();
+      // The last line of a file might not have a newline.
+      var newLine = getNextLine() || "";
+      return lineContents + newLine;
+
+      function getNextLine() {
+        return remainingLinesIndex < remainingLines.length ?
+            remainingLines[remainingLinesIndex++] : undefined;
+      }
+    };
+
+    // We need to remember the position of "remainingLines"
+    var lastGeneratedLine = 1, lastGeneratedColumn = 0;
+
+    // The generate SourceNodes we need a code range.
+    // To extract it current and last mapping is used.
+    // Here we store the last mapping.
+    var lastMapping = null;
+
+    aSourceMapConsumer.eachMapping(function (mapping) {
+      if (lastMapping !== null) {
+        // We add the code from "lastMapping" to "mapping":
+        // First check if there is a new line in between.
+        if (lastGeneratedLine < mapping.generatedLine) {
+          // Associate first line with "lastMapping"
+          addMappingWithCode(lastMapping, shiftNextLine());
+          lastGeneratedLine++;
+          lastGeneratedColumn = 0;
+          // The remaining code is added without mapping
+        } else {
+          // There is no new line in between.
+          // Associate the code between "lastGeneratedColumn" and
+          // "mapping.generatedColumn" with "lastMapping"
+          var nextLine = remainingLines[remainingLinesIndex];
+          var code = nextLine.substr(0, mapping.generatedColumn -
+                                        lastGeneratedColumn);
+          remainingLines[remainingLinesIndex] = nextLine.substr(mapping.generatedColumn -
+                                              lastGeneratedColumn);
+          lastGeneratedColumn = mapping.generatedColumn;
+          addMappingWithCode(lastMapping, code);
+          // No more remaining code, continue
+          lastMapping = mapping;
+          return;
+        }
+      }
+      // We add the generated code until the first mapping
+      // to the SourceNode without any mapping.
+      // Each line is added as separate string.
+      while (lastGeneratedLine < mapping.generatedLine) {
+        node.add(shiftNextLine());
+        lastGeneratedLine++;
+      }
+      if (lastGeneratedColumn < mapping.generatedColumn) {
+        var nextLine = remainingLines[remainingLinesIndex];
+        node.add(nextLine.substr(0, mapping.generatedColumn));
+        remainingLines[remainingLinesIndex] = nextLine.substr(mapping.generatedColumn);
+        lastGeneratedColumn = mapping.generatedColumn;
+      }
+      lastMapping = mapping;
+    }, this);
+    // We have processed all mappings.
+    if (remainingLinesIndex < remainingLines.length) {
+      if (lastMapping) {
+        // Associate the remaining code in the current line with "lastMapping"
+        addMappingWithCode(lastMapping, shiftNextLine());
+      }
+      // and add the remaining lines without any mapping
+      node.add(remainingLines.splice(remainingLinesIndex).join(""));
+    }
+
+    // Copy sourcesContent into SourceNode
+    aSourceMapConsumer.sources.forEach(function (sourceFile) {
+      var content = aSourceMapConsumer.sourceContentFor(sourceFile);
+      if (content != null) {
+        if (aRelativePath != null) {
+          sourceFile = util.join(aRelativePath, sourceFile);
+        }
+        node.setSourceContent(sourceFile, content);
+      }
+    });
+
+    return node;
+
+    function addMappingWithCode(mapping, code) {
+      if (mapping === null || mapping.source === undefined) {
+        node.add(code);
+      } else {
+        var source = aRelativePath
+          ? util.join(aRelativePath, mapping.source)
+          : mapping.source;
+        node.add(new SourceNode(mapping.originalLine,
+                                mapping.originalColumn,
+                                source,
+                                code,
+                                mapping.name));
+      }
+    }
+  };
+
+/**
+ * Add a chunk of generated JS to this source node.
+ *
+ * @param aChunk A string snippet of generated JS code, another instance of
+ *        SourceNode, or an array where each member is one of those things.
+ */
+SourceNode.prototype.add = function SourceNode_add(aChunk) {
+  if (Array.isArray(aChunk)) {
+    aChunk.forEach(function (chunk) {
+      this.add(chunk);
+    }, this);
+  }
+  else if (aChunk[isSourceNode] || typeof aChunk === "string") {
+    if (aChunk) {
+      this.children.push(aChunk);
+    }
+  }
+  else {
+    throw new TypeError(
+      "Expected a SourceNode, string, or an array of SourceNodes and strings. Got " + aChunk
+    );
+  }
+  return this;
+};
+
+/**
+ * Add a chunk of generated JS to the beginning of this source node.
+ *
+ * @param aChunk A string snippet of generated JS code, another instance of
+ *        SourceNode, or an array where each member is one of those things.
+ */
+SourceNode.prototype.prepend = function SourceNode_prepend(aChunk) {
+  if (Array.isArray(aChunk)) {
+    for (var i = aChunk.length-1; i >= 0; i--) {
+      this.prepend(aChunk[i]);
+    }
+  }
+  else if (aChunk[isSourceNode] || typeof aChunk === "string") {
+    this.children.unshift(aChunk);
+  }
+  else {
+    throw new TypeError(
+      "Expected a SourceNode, string, or an array of SourceNodes and strings. Got " + aChunk
+    );
+  }
+  return this;
+};
+
+/**
+ * Walk over the tree of JS snippets in this node and its children. The
+ * walking function is called once for each snippet of JS and is passed that
+ * snippet and the its original associated source's line/column location.
+ *
+ * @param aFn The traversal function.
+ */
+SourceNode.prototype.walk = function SourceNode_walk(aFn) {
+  var chunk;
+  for (var i = 0, len = this.children.length; i < len; i++) {
+    chunk = this.children[i];
+    if (chunk[isSourceNode]) {
+      chunk.walk(aFn);
+    }
+    else {
+      if (chunk !== '') {
+        aFn(chunk, { source: this.source,
+                     line: this.line,
+                     column: this.column,
+                     name: this.name });
+      }
+    }
+  }
+};
+
+/**
+ * Like `String.prototype.join` except for SourceNodes. Inserts `aStr` between
+ * each of `this.children`.
+ *
+ * @param aSep The separator.
+ */
+SourceNode.prototype.join = function SourceNode_join(aSep) {
+  var newChildren;
+  var i;
+  var len = this.children.length;
+  if (len > 0) {
+    newChildren = [];
+    for (i = 0; i < len-1; i++) {
+      newChildren.push(this.children[i]);
+      newChildren.push(aSep);
+    }
+    newChildren.push(this.children[i]);
+    this.children = newChildren;
+  }
+  return this;
+};
+
+/**
+ * Call String.prototype.replace on the very right-most source snippet. Useful
+ * for trimming whitespace from the end of a source node, etc.
+ *
+ * @param aPattern The pattern to replace.
+ * @param aReplacement The thing to replace the pattern with.
+ */
+SourceNode.prototype.replaceRight = function SourceNode_replaceRight(aPattern, aReplacement) {
+  var lastChild = this.children[this.children.length - 1];
+  if (lastChild[isSourceNode]) {
+    lastChild.replaceRight(aPattern, aReplacement);
+  }
+  else if (typeof lastChild === 'string') {
+    this.children[this.children.length - 1] = lastChild.replace(aPattern, aReplacement);
+  }
+  else {
+    this.children.push(''.replace(aPattern, aReplacement));
+  }
+  return this;
+};
+
+/**
+ * Set the source content for a source file. This will be added to the SourceMapGenerator
+ * in the sourcesContent field.
+ *
+ * @param aSourceFile The filename of the source file
+ * @param aSourceContent The content of the source file
+ */
+SourceNode.prototype.setSourceContent =
+  function SourceNode_setSourceContent(aSourceFile, aSourceContent) {
+    this.sourceContents[util.toSetString(aSourceFile)] = aSourceContent;
+  };
+
+/**
+ * Walk over the tree of SourceNodes. The walking function is called for each
+ * source file content and is passed the filename and source content.
+ *
+ * @param aFn The traversal function.
+ */
+SourceNode.prototype.walkSourceContents =
+  function SourceNode_walkSourceContents(aFn) {
+    for (var i = 0, len = this.children.length; i < len; i++) {
+      if (this.children[i][isSourceNode]) {
+        this.children[i].walkSourceContents(aFn);
+      }
+    }
+
+    var sources = Object.keys(this.sourceContents);
+    for (var i = 0, len = sources.length; i < len; i++) {
+      aFn(util.fromSetString(sources[i]), this.sourceContents[sources[i]]);
+    }
+  };
+
+/**
+ * Return the string representation of this source node. Walks over the tree
+ * and concatenates all the various snippets together to one string.
+ */
+SourceNode.prototype.toString = function SourceNode_toString() {
+  var str = "";
+  this.walk(function (chunk) {
+    str += chunk;
+  });
+  return str;
+};
+
+/**
+ * Returns the string representation of this source node along with a source
+ * map.
+ */
+SourceNode.prototype.toStringWithSourceMap = function SourceNode_toStringWithSourceMap(aArgs) {
+  var generated = {
+    code: "",
+    line: 1,
+    column: 0
+  };
+  var map = new SourceMapGenerator(aArgs);
+  var sourceMappingActive = false;
+  var lastOriginalSource = null;
+  var lastOriginalLine = null;
+  var lastOriginalColumn = null;
+  var lastOriginalName = null;
+  this.walk(function (chunk, original) {
+    generated.code += chunk;
+    if (original.source !== null
+        && original.line !== null
+        && original.column !== null) {
+      if(lastOriginalSource !== original.source
+         || lastOriginalLine !== original.line
+         || lastOriginalColumn !== original.column
+         || lastOriginalName !== original.name) {
+        map.addMapping({
+          source: original.source,
+          original: {
+            line: original.line,
+            column: original.column
+          },
+          generated: {
+            line: generated.line,
+            column: generated.column
+          },
+          name: original.name
+        });
+      }
+      lastOriginalSource = original.source;
+      lastOriginalLine = original.line;
+      lastOriginalColumn = original.column;
+      lastOriginalName = original.name;
+      sourceMappingActive = true;
+    } else if (sourceMappingActive) {
+      map.addMapping({
+        generated: {
+          line: generated.line,
+          column: generated.column
+        }
+      });
+      lastOriginalSource = null;
+      sourceMappingActive = false;
+    }
+    for (var idx = 0, length = chunk.length; idx < length; idx++) {
+      if (chunk.charCodeAt(idx) === NEWLINE_CODE) {
+        generated.line++;
+        generated.column = 0;
+        // Mappings end at eol
+        if (idx + 1 === length) {
+          lastOriginalSource = null;
+          sourceMappingActive = false;
+        } else if (sourceMappingActive) {
+          map.addMapping({
+            source: original.source,
+            original: {
+              line: original.line,
+              column: original.column
+            },
+            generated: {
+              line: generated.line,
+              column: generated.column
+            },
+            name: original.name
+          });
+        }
+      } else {
+        generated.column++;
+      }
+    }
+  });
+  this.walkSourceContents(function (sourceFile, sourceContent) {
+    map.setSourceContent(sourceFile, sourceContent);
+  });
+
+  return { code: generated.code, map: map };
+};
+
+exports.SourceNode = SourceNode;
+
+},{"./source-map-generator":15,"./util":17}],17:[function(require,module,exports){
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+
+/**
+ * This is a helper function for getting values from parameter/options
+ * objects.
+ *
+ * @param args The object we are extracting values from
+ * @param name The name of the property we are getting.
+ * @param defaultValue An optional value to return if the property is missing
+ * from the object. If this is not specified and the property is missing, an
+ * error will be thrown.
+ */
+function getArg(aArgs, aName, aDefaultValue) {
+  if (aName in aArgs) {
+    return aArgs[aName];
+  } else if (arguments.length === 3) {
+    return aDefaultValue;
+  } else {
+    throw new Error('"' + aName + '" is a required argument.');
+  }
+}
+exports.getArg = getArg;
+
+var urlRegexp = /^(?:([\w+\-.]+):)?\/\/(?:(\w+:\w+)@)?([\w.]*)(?::(\d+))?(\S*)$/;
+var dataUrlRegexp = /^data:.+\,.+$/;
+
+function urlParse(aUrl) {
+  var match = aUrl.match(urlRegexp);
+  if (!match) {
+    return null;
+  }
+  return {
+    scheme: match[1],
+    auth: match[2],
+    host: match[3],
+    port: match[4],
+    path: match[5]
+  };
+}
+exports.urlParse = urlParse;
+
+function urlGenerate(aParsedUrl) {
+  var url = '';
+  if (aParsedUrl.scheme) {
+    url += aParsedUrl.scheme + ':';
+  }
+  url += '//';
+  if (aParsedUrl.auth) {
+    url += aParsedUrl.auth + '@';
+  }
+  if (aParsedUrl.host) {
+    url += aParsedUrl.host;
+  }
+  if (aParsedUrl.port) {
+    url += ":" + aParsedUrl.port
+  }
+  if (aParsedUrl.path) {
+    url += aParsedUrl.path;
+  }
+  return url;
+}
+exports.urlGenerate = urlGenerate;
+
+/**
+ * Normalizes a path, or the path portion of a URL:
+ *
+ * - Replaces consecutive slashes with one slash.
+ * - Removes unnecessary '.' parts.
+ * - Removes unnecessary '<dir>/..' parts.
+ *
+ * Based on code in the Node.js 'path' core module.
+ *
+ * @param aPath The path or url to normalize.
+ */
+function normalize(aPath) {
+  var path = aPath;
+  var url = urlParse(aPath);
+  if (url) {
+    if (!url.path) {
+      return aPath;
+    }
+    path = url.path;
+  }
+  var isAbsolute = exports.isAbsolute(path);
+
+  var parts = path.split(/\/+/);
+  for (var part, up = 0, i = parts.length - 1; i >= 0; i--) {
+    part = parts[i];
+    if (part === '.') {
+      parts.splice(i, 1);
+    } else if (part === '..') {
+      up++;
+    } else if (up > 0) {
+      if (part === '') {
+        // The first part is blank if the path is absolute. Trying to go
+        // above the root is a no-op. Therefore we can remove all '..' parts
+        // directly after the root.
+        parts.splice(i + 1, up);
+        up = 0;
+      } else {
+        parts.splice(i, 2);
+        up--;
+      }
+    }
+  }
+  path = parts.join('/');
+
+  if (path === '') {
+    path = isAbsolute ? '/' : '.';
+  }
+
+  if (url) {
+    url.path = path;
+    return urlGenerate(url);
+  }
+  return path;
+}
+exports.normalize = normalize;
+
+/**
+ * Joins two paths/URLs.
+ *
+ * @param aRoot The root path or URL.
+ * @param aPath The path or URL to be joined with the root.
+ *
+ * - If aPath is a URL or a data URI, aPath is returned, unless aPath is a
+ *   scheme-relative URL: Then the scheme of aRoot, if any, is prepended
+ *   first.
+ * - Otherwise aPath is a path. If aRoot is a URL, then its path portion
+ *   is updated with the result and aRoot is returned. Otherwise the result
+ *   is returned.
+ *   - If aPath is absolute, the result is aPath.
+ *   - Otherwise the two paths are joined with a slash.
+ * - Joining for example 'http://' and 'www.example.com' is also supported.
+ */
+function join(aRoot, aPath) {
+  if (aRoot === "") {
+    aRoot = ".";
+  }
+  if (aPath === "") {
+    aPath = ".";
+  }
+  var aPathUrl = urlParse(aPath);
+  var aRootUrl = urlParse(aRoot);
+  if (aRootUrl) {
+    aRoot = aRootUrl.path || '/';
+  }
+
+  // `join(foo, '//www.example.org')`
+  if (aPathUrl && !aPathUrl.scheme) {
+    if (aRootUrl) {
+      aPathUrl.scheme = aRootUrl.scheme;
+    }
+    return urlGenerate(aPathUrl);
+  }
+
+  if (aPathUrl || aPath.match(dataUrlRegexp)) {
+    return aPath;
+  }
+
+  // `join('http://', 'www.example.com')`
+  if (aRootUrl && !aRootUrl.host && !aRootUrl.path) {
+    aRootUrl.host = aPath;
+    return urlGenerate(aRootUrl);
+  }
+
+  var joined = aPath.charAt(0) === '/'
+    ? aPath
+    : normalize(aRoot.replace(/\/+$/, '') + '/' + aPath);
+
+  if (aRootUrl) {
+    aRootUrl.path = joined;
+    return urlGenerate(aRootUrl);
+  }
+  return joined;
+}
+exports.join = join;
+
+exports.isAbsolute = function (aPath) {
+  return aPath.charAt(0) === '/' || !!aPath.match(urlRegexp);
+};
+
+/**
+ * Make a path relative to a URL or another path.
+ *
+ * @param aRoot The root path or URL.
+ * @param aPath The path or URL to be made relative to aRoot.
+ */
+function relative(aRoot, aPath) {
+  if (aRoot === "") {
+    aRoot = ".";
+  }
+
+  aRoot = aRoot.replace(/\/$/, '');
+
+  // It is possible for the path to be above the root. In this case, simply
+  // checking whether the root is a prefix of the path won't work. Instead, we
+  // need to remove components from the root one by one, until either we find
+  // a prefix that fits, or we run out of components to remove.
+  var level = 0;
+  while (aPath.indexOf(aRoot + '/') !== 0) {
+    var index = aRoot.lastIndexOf("/");
+    if (index < 0) {
+      return aPath;
+    }
+
+    // If the only part of the root that is left is the scheme (i.e. http://,
+    // file:///, etc.), one or more slashes (/), or simply nothing at all, we
+    // have exhausted all components, so the path is not relative to the root.
+    aRoot = aRoot.slice(0, index);
+    if (aRoot.match(/^([^\/]+:\/)?\/*$/)) {
+      return aPath;
+    }
+
+    ++level;
+  }
+
+  // Make sure we add a "../" for each component we removed from the root.
+  return Array(level + 1).join("../") + aPath.substr(aRoot.length + 1);
+}
+exports.relative = relative;
+
+var supportsNullProto = (function () {
+  var obj = Object.create(null);
+  return !('__proto__' in obj);
+}());
+
+function identity (s) {
+  return s;
+}
+
+/**
+ * Because behavior goes wacky when you set `__proto__` on objects, we
+ * have to prefix all the strings in our set with an arbitrary character.
+ *
+ * See https://github.com/mozilla/source-map/pull/31 and
+ * https://github.com/mozilla/source-map/issues/30
+ *
+ * @param String aStr
+ */
+function toSetString(aStr) {
+  if (isProtoString(aStr)) {
+    return '$' + aStr;
+  }
+
+  return aStr;
+}
+exports.toSetString = supportsNullProto ? identity : toSetString;
+
+function fromSetString(aStr) {
+  if (isProtoString(aStr)) {
+    return aStr.slice(1);
+  }
+
+  return aStr;
+}
+exports.fromSetString = supportsNullProto ? identity : fromSetString;
+
+function isProtoString(s) {
+  if (!s) {
+    return false;
+  }
+
+  var length = s.length;
+
+  if (length < 9 /* "__proto__".length */) {
+    return false;
+  }
+
+  if (s.charCodeAt(length - 1) !== 95  /* '_' */ ||
+      s.charCodeAt(length - 2) !== 95  /* '_' */ ||
+      s.charCodeAt(length - 3) !== 111 /* 'o' */ ||
+      s.charCodeAt(length - 4) !== 116 /* 't' */ ||
+      s.charCodeAt(length - 5) !== 111 /* 'o' */ ||
+      s.charCodeAt(length - 6) !== 114 /* 'r' */ ||
+      s.charCodeAt(length - 7) !== 112 /* 'p' */ ||
+      s.charCodeAt(length - 8) !== 95  /* '_' */ ||
+      s.charCodeAt(length - 9) !== 95  /* '_' */) {
+    return false;
+  }
+
+  for (var i = length - 10; i >= 0; i--) {
+    if (s.charCodeAt(i) !== 36 /* '$' */) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+/**
+ * Comparator between two mappings where the original positions are compared.
+ *
+ * Optionally pass in `true` as `onlyCompareGenerated` to consider two
+ * mappings with the same original source/line/column, but different generated
+ * line and column the same. Useful when searching for a mapping with a
+ * stubbed out mapping.
+ */
+function compareByOriginalPositions(mappingA, mappingB, onlyCompareOriginal) {
+  var cmp = mappingA.source - mappingB.source;
+  if (cmp !== 0) {
+    return cmp;
+  }
+
+  cmp = mappingA.originalLine - mappingB.originalLine;
+  if (cmp !== 0) {
+    return cmp;
+  }
+
+  cmp = mappingA.originalColumn - mappingB.originalColumn;
+  if (cmp !== 0 || onlyCompareOriginal) {
+    return cmp;
+  }
+
+  cmp = mappingA.generatedColumn - mappingB.generatedColumn;
+  if (cmp !== 0) {
+    return cmp;
+  }
+
+  cmp = mappingA.generatedLine - mappingB.generatedLine;
+  if (cmp !== 0) {
+    return cmp;
+  }
+
+  return mappingA.name - mappingB.name;
+}
+exports.compareByOriginalPositions = compareByOriginalPositions;
+
+/**
+ * Comparator between two mappings with deflated source and name indices where
+ * the generated positions are compared.
+ *
+ * Optionally pass in `true` as `onlyCompareGenerated` to consider two
+ * mappings with the same generated line and column, but different
+ * source/name/original line and column the same. Useful when searching for a
+ * mapping with a stubbed out mapping.
+ */
+function compareByGeneratedPositionsDeflated(mappingA, mappingB, onlyCompareGenerated) {
+  var cmp = mappingA.generatedLine - mappingB.generatedLine;
+  if (cmp !== 0) {
+    return cmp;
+  }
+
+  cmp = mappingA.generatedColumn - mappingB.generatedColumn;
+  if (cmp !== 0 || onlyCompareGenerated) {
+    return cmp;
+  }
+
+  cmp = mappingA.source - mappingB.source;
+  if (cmp !== 0) {
+    return cmp;
+  }
+
+  cmp = mappingA.originalLine - mappingB.originalLine;
+  if (cmp !== 0) {
+    return cmp;
+  }
+
+  cmp = mappingA.originalColumn - mappingB.originalColumn;
+  if (cmp !== 0) {
+    return cmp;
+  }
+
+  return mappingA.name - mappingB.name;
+}
+exports.compareByGeneratedPositionsDeflated = compareByGeneratedPositionsDeflated;
+
+function strcmp(aStr1, aStr2) {
+  if (aStr1 === aStr2) {
+    return 0;
+  }
+
+  if (aStr1 > aStr2) {
+    return 1;
+  }
+
+  return -1;
+}
+
+/**
+ * Comparator between two mappings with inflated source and name strings where
+ * the generated positions are compared.
+ */
+function compareByGeneratedPositionsInflated(mappingA, mappingB) {
+  var cmp = mappingA.generatedLine - mappingB.generatedLine;
+  if (cmp !== 0) {
+    return cmp;
+  }
+
+  cmp = mappingA.generatedColumn - mappingB.generatedColumn;
+  if (cmp !== 0) {
+    return cmp;
+  }
+
+  cmp = strcmp(mappingA.source, mappingB.source);
+  if (cmp !== 0) {
+    return cmp;
+  }
+
+  cmp = mappingA.originalLine - mappingB.originalLine;
+  if (cmp !== 0) {
+    return cmp;
+  }
+
+  cmp = mappingA.originalColumn - mappingB.originalColumn;
+  if (cmp !== 0) {
+    return cmp;
+  }
+
+  return strcmp(mappingA.name, mappingB.name);
+}
+exports.compareByGeneratedPositionsInflated = compareByGeneratedPositionsInflated;
+
+},{}],18:[function(require,module,exports){
+/*
+ * Copyright 2009-2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE.txt or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+exports.SourceMapGenerator = require('./lib/source-map-generator').SourceMapGenerator;
+exports.SourceMapConsumer = require('./lib/source-map-consumer').SourceMapConsumer;
+exports.SourceNode = require('./lib/source-node').SourceNode;
+
+},{"./lib/source-map-consumer":14,"./lib/source-map-generator":15,"./lib/source-node":16}],"/lib/opal/cli_runners/source-map-support.js":[function(require,module,exports){
+(function (process){(function (){
+// IMPORTANT NOTICE:
+// Remember to update the browser version whenever this file is changed,
+// to do so, `run bin/build-browser-source-map-support`
+
+// The following is taken and adapted from the work of Evan Wallace
+// https://github.com/evanw/node-source-map-support v0.5.19
+
+// The MIT License (MIT)
+//
+// Copyright (c) 2014 Evan Wallace
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+var SourceMapConsumer = require('source-map').SourceMapConsumer;
+var path = require('path');
+
+var fs;
+try {
+  fs = require('fs');
+  if (!fs.existsSync || !fs.readFileSync) {
+    // fs doesn't have all methods we need
+    fs = null;
+  }
+} catch (err) {
+  /* nop */
+}
+
+var bufferFrom = require('buffer-from');
+
+/**
+ * Requires a module which is protected against bundler minification.
+ *
+ * @param {NodeModule} mod
+ * @param {string} request
+ */
+function dynamicRequire(mod, request) {
+  return mod.require(request);
+}  
+
+// Only install once if called multiple times
+var errorFormatterInstalled = false;
+var uncaughtShimInstalled = false;
+
+// If true, the caches are reset before a stack trace formatting operation
+var emptyCacheBetweenOperations = false;
+
+// Supports {browser, node, auto}
+var environment = "auto";
+
+// Maps a file path to a string containing the file contents
+var fileContentsCache = {};
+
+// Maps a file path to a source map for that file
+var sourceMapCache = {};
+
+// Regex for detecting source maps
+var reSourceMap = /^data:application\/json[^,]+base64,/;
+
+// Priority list of retrieve handlers
+var retrieveFileHandlers = [];
+var retrieveMapHandlers = [];
+
+function isInBrowser() {
+  if (environment === "browser")
+    return true;
+  if (environment === "node")
+    return false;
+  return ((typeof window !== 'undefined') && (typeof XMLHttpRequest === 'function') && !(window.require && window.module && window.process && window.process.type === "renderer"));
+}
+
+function hasGlobalProcessEventEmitter() {
+  return ((typeof process === 'object') && (process !== null) && (typeof process.on === 'function'));
+}
+
+function handlerExec(list) {
+  return function(arg) {
+    for (var i = 0; i < list.length; i++) {
+      var ret = list[i](arg);
+      if (ret) {
+        return ret;
+      }
+    }
+    return null;
+  };
+}
+
+var retrieveFile = handlerExec(retrieveFileHandlers);
+
+retrieveFileHandlers.push(function(path) {
+  // Trim the path to make sure there is no extra whitespace.
+  path = path.trim();
+  if (/^file:/.test(path)) {
+    // existsSync/readFileSync can't handle file protocol, but once stripped, it works
+    path = path.replace(/file:\/\/\/(\w:)?/, function(protocol, drive) {
+      return drive ?
+        '' : // file:///C:/dir/file -> C:/dir/file
+        '/'; // file:///root-dir/file -> /root-dir/file
+    });
+  }
+  if (path in fileContentsCache) {
+    return fileContentsCache[path];
+  }
+
+  var contents = '';
+  try {
+    if (!fs) {
+      // Use SJAX if we are in the browser
+      var xhr = new XMLHttpRequest();
+      xhr.open('GET', path, /** async */ false);
+      xhr.send(null);
+      if (xhr.readyState === 4 && xhr.status === 200) {
+        contents = xhr.responseText;
+      }
+    } else if (fs.existsSync(path)) {
+      // Otherwise, use the filesystem
+      contents = fs.readFileSync(path, 'utf8');
+    }
+  } catch (er) {
+    /* ignore any errors */
+  }
+
+  return fileContentsCache[path] = contents;
+});
+
+// Support URLs relative to a directory, but be careful about a protocol prefix
+// in case we are in the browser (i.e. directories may start with "http://" or "file:///")
+function supportRelativeURL(file, url) {
+  // Force file to null otherwise it will relativize locations to the current file
+  file = null
+
+  if (!file) return url;
+  var dir = path.dirname(file);
+  var match = /^\w+:\/\/[^\/]*/.exec(dir);
+  var protocol = match ? match[0] : '';
+  var startPath = dir.slice(protocol.length);
+  if (protocol && /^\/\w\:/.test(startPath)) {
+    // handle file:///C:/ paths
+    protocol += '/';
+    return protocol + path.resolve(dir.slice(protocol.length), url).replace(/\\/g, '/');
+  }
+  return protocol + path.resolve(dir.slice(protocol.length), url);
+}
+
+function retrieveSourceMapURL(source) {
+  var fileData;
+
+  if (isInBrowser()) {
+     try {
+       var xhr = new XMLHttpRequest();
+       xhr.open('GET', source, false);
+       xhr.send(null);
+       fileData = xhr.readyState === 4 ? xhr.responseText : null;
+
+       // Support providing a sourceMappingURL via the SourceMap header
+       var sourceMapHeader = xhr.getResponseHeader("SourceMap") ||
+                             xhr.getResponseHeader("X-SourceMap");
+       if (sourceMapHeader) {
+         return sourceMapHeader;
+       }
+     } catch (e) {
+     }
+  }
+
+  // Get the URL of the source map
+  fileData = retrieveFile(source);
+  var re = /(?:\/\/[@#][\s]*sourceMappingURL=([^\s'"]+)[\s]*$)|(?:\/\*[@#][\s]*sourceMappingURL=([^\s*'"]+)[\s]*(?:\*\/)[\s]*$)/mg;
+  // Keep executing the search to find the *last* sourceMappingURL to avoid
+  // picking up sourceMappingURLs from comments, strings, etc.
+  var lastMatch, match;
+  while (match = re.exec(fileData)) lastMatch = match;
+  if (!lastMatch) return null;
+  return lastMatch[1];
+};
+
+// Can be overridden by the retrieveSourceMap option to install. Takes a
+// generated source filename; returns a {map, optional url} object, or null if
+// there is no source map.  The map field may be either a string or the parsed
+// JSON object (ie, it must be a valid argument to the SourceMapConsumer
+// constructor).
+var retrieveSourceMap = handlerExec(retrieveMapHandlers);
+retrieveMapHandlers.push(function(source) {
+  var sourceMappingURL = retrieveSourceMapURL(source);
+  if (!sourceMappingURL) return null;
+
+  // Read the contents of the source map
+  var sourceMapData;
+  if (reSourceMap.test(sourceMappingURL)) {
+    // Support source map URL as a data url
+    var rawData = sourceMappingURL.slice(sourceMappingURL.indexOf(',') + 1);
+    sourceMapData = bufferFrom(rawData, "base64").toString();
+    sourceMappingURL = source;
+  } else {
+    // Support source map URLs relative to the source URL
+    sourceMappingURL = supportRelativeURL(source, sourceMappingURL);
+    sourceMapData = retrieveFile(sourceMappingURL);
+  }
+
+  if (!sourceMapData) {
+    return null;
+  }
+
+  return {
+    url: sourceMappingURL,
+    map: sourceMapData
+  };
+});
+
+function mapSourcePosition(position) {
+  var sourceMap = sourceMapCache[position.source];
+  if (!sourceMap) {
+    // Call the (overrideable) retrieveSourceMap function to get the source map.
+    var urlAndMap = retrieveSourceMap(position.source);
+    if (urlAndMap) {
+      sourceMap = sourceMapCache[position.source] = {
+        url: urlAndMap.url,
+        map: new SourceMapConsumer(urlAndMap.map)
+      };
+
+      // Load all sources stored inline with the source map into the file cache
+      // to pretend like they are already loaded. They may not exist on disk.
+      if (sourceMap.map.sourcesContent) {
+        sourceMap.map.sources.forEach(function(source, i) {
+          var contents = sourceMap.map.sourcesContent[i];
+          if (contents) {
+            var url = supportRelativeURL(sourceMap.url, source);
+            fileContentsCache[url] = contents;
+          }
+        });
+      }
+    } else {
+      sourceMap = sourceMapCache[position.source] = {
+        url: null,
+        map: null
+      };
+    }
+  }
+
+  // Resolve the source URL relative to the URL of the source map
+  if (sourceMap && sourceMap.map && typeof sourceMap.map.originalPositionFor === 'function') {
+    var originalPosition = sourceMap.map.originalPositionFor(position);
+
+    // Only return the original position if a matching line was found. If no
+    // matching line is found then we return position instead, which will cause
+    // the stack trace to print the path and line for the compiled file. It is
+    // better to give a precise location in the compiled file than a vague
+    // location in the original file.
+    if (originalPosition.source !== null) {
+      originalPosition.source = supportRelativeURL(
+        sourceMap.url, originalPosition.source);
+      return originalPosition;
+    }
+  }
+
+  return position;
+}
+
+// Parses code generated by FormatEvalOrigin(), a function inside V8:
+// https://code.google.com/p/v8/source/browse/trunk/src/messages.js
+function mapEvalOrigin(origin) {
+  // Most eval() calls are in this format
+  var match = /^eval from ([^(]+) \((.+):(\d+):(\d+)\)$/.exec(origin);
+  if (match) {
+    var position = mapSourcePosition({
+      source: match[2],
+      line: +match[3],
+      column: match[4] - 1
+    });
+    return 'eval from ' + match[1] + ' (' + position.source + ':' +
+      position.line + ':' + (position.column + 1) + ')';
+  }
+
+  // Parse nested eval() calls using recursion
+  match = /^eval from ([^(]+) \((.+)\)$/.exec(origin);
+  if (match) {
+    return 'eval from ' + match[1] + ' (' + mapEvalOrigin(match[2]) + ')';
+  }
+
+  // Make sure we still return useful information if we didn't find anything
+  return origin;
+}
+
+// This is copied almost verbatim from the V8 source code at
+// https://code.google.com/p/v8/source/browse/trunk/src/messages.js. The
+// implementation of wrapCallSite() used to just forward to the actual source
+// code of CallSite.prototype.toString but unfortunately a new release of V8
+// did something to the prototype chain and broke the shim. The only fix I
+// could find was copy/paste.
+function CallSiteToString() {
+  var fileName;
+  var fileLocation = "";
+  if (this.isNative()) {
+    fileLocation = "native";
+  } else {
+    fileName = this.getScriptNameOrSourceURL();
+    if (!fileName && this.isEval()) {
+      fileLocation = this.getEvalOrigin();
+      fileLocation += ", ";  // Expecting source position to follow.
+    }
+
+    if (fileName) {
+      fileLocation += fileName;
+    } else {
+      // Source code does not originate from a file and is not native, but we
+      // can still get the source position inside the source string, e.g. in
+      // an eval string.
+      fileLocation += "<anonymous>";
+    }
+
+    if (fileLocation.startsWith("corelib/")) {
+      fileLocation = "<internal:" + fileLocation + ">";
+    } else if (fileLocation.endsWith(".js")) {
+      fileLocation = "<js:" + fileLocation + ">";
+    }
+
+    var lineNumber = this.getLineNumber();
+    if (lineNumber != null) {
+      fileLocation += ":" + lineNumber;
+      var columnNumber = this.getColumnNumber();
+      if (columnNumber) {
+        fileLocation += ":" + columnNumber;
+      }
+    }
+  }
+
+  var line = "";
+  var functionName = this.getFunctionName();
+  var addSuffix = true;
+  var isConstructor = this.isConstructor();
+  var isMethodCall = !(this.isToplevel() || isConstructor);
+  if (isMethodCall) {
+    var typeName = this.getTypeName();
+    // Fixes shim to be backward compatable with Node v0 to v4
+    if (typeName === "[object Object]") {
+      typeName = "null";
+    }
+    var methodName = this.getMethodName();
+    if (functionName) {
+      if (functionName.startsWith("$$")) {
+        functionName = functionName.slice(2);
+      } else if (functionName.startsWith("$")) {
+        functionName = functionName.slice(1);
+      }
+      if (typeName && functionName.indexOf(typeName) != 0) {
+        line += typeName + ".";
+      }
+      line += functionName;
+      if (methodName && functionName.indexOf("." + methodName) != functionName.length - methodName.length - 1) {
+        line += " [as " + methodName + "]";
+      }
+    } else {
+      line += typeName + "." + (methodName || "<anonymous>");
+    }
+  } else if (isConstructor) {
+    line += "new " + (functionName || "<anonymous>");
+  } else if (functionName) {
+    line += functionName;
+  } else {
+    line += fileLocation;
+    addSuffix = false;
+  }
+  if (addSuffix) {
+    line += " (" + fileLocation + ")";
+  }
+  line = fileLocation + ":in `" + (functionName || methodName) + "'"
+  return line;
+}
+
+function cloneCallSite(frame) {
+  var object = {};
+  Object.getOwnPropertyNames(Object.getPrototypeOf(frame)).forEach(function(name) {
+    object[name] = /^(?:is|get)/.test(name) ? function() { return frame[name].call(frame); } : frame[name];
+  });
+  object.toString = CallSiteToString;
+  return object;
+}
+
+function wrapCallSite(frame, state) {
+  // provides interface backward compatibility
+  if (state === undefined) {
+    state = { nextPosition: null, curPosition: null }
+  }
+  if(frame.isNative()) {
+    state.curPosition = null;
+    return frame;
+  }
+
+  // Most call sites will return the source file from getFileName(), but code
+  // passed to eval() ending in "//# sourceURL=..." will return the source file
+  // from getScriptNameOrSourceURL() instead
+  var source = frame.getFileName() || frame.getScriptNameOrSourceURL();
+  if (source) {
+    var line = frame.getLineNumber();
+    var column = frame.getColumnNumber() - 1;
+
+    // Fix position in Node where some (internal) code is prepended.
+    // See https://github.com/evanw/node-source-map-support/issues/36
+    // Header removed in node at ^10.16 || >=11.11.0
+    // v11 is not an LTS candidate, we can just test the one version with it.
+    // Test node versions for: 10.16-19, 10.20+, 12-19, 20-99, 100+, or 11.11
+    var noHeader = /^v(10\.1[6-9]|10\.[2-9][0-9]|10\.[0-9]{3,}|1[2-9]\d*|[2-9]\d|\d{3,}|11\.11)/;
+    var headerLength = noHeader.test(process.version) ? 0 : 62;
+    if (line === 1 && column > headerLength && !isInBrowser() && !frame.isEval()) {
+      column -= headerLength;
+    }
+
+    var position = mapSourcePosition({
+      source: source,
+      line: line,
+      column: column
+    });
+    state.curPosition = position;
+    frame = cloneCallSite(frame);
+    var originalFunctionName = frame.getFunctionName;
+    frame.getFunctionName = function() {
+      if (state.nextPosition == null) {
+        return originalFunctionName();
+      }
+      return state.nextPosition.name || originalFunctionName();
+    };
+    frame.getFileName = function() { return position.source; };
+    frame.getLineNumber = function() { return position.line; };
+    frame.getColumnNumber = function() { return position.column + 1; };
+    frame.getScriptNameOrSourceURL = function() { return position.source; };
+    return frame;
+  }
+
+  // Code called using eval() needs special handling
+  var origin = frame.isEval() && frame.getEvalOrigin();
+  if (origin) {
+    origin = mapEvalOrigin(origin);
+    frame = cloneCallSite(frame);
+    frame.getEvalOrigin = function() { return origin; };
+    return frame;
+  }
+
+  // If we get here then we were unable to change the source position
+  return frame;
+}
+
+// This function is part of the V8 stack trace API, for more info see:
+// https://v8.dev/docs/stack-trace-api
+function prepareStackTrace(error, stack) {
+  if (emptyCacheBetweenOperations) {
+    fileContentsCache = {};
+    sourceMapCache = {};
+  }
+
+  var name = error.name || 'Error';
+  var message = error.message || '';
+  var errorString = name + ": " + message;
+
+  var state = { nextPosition: null, curPosition: null };
+  var processedStack = [];
+  for (var i = stack.length - 1; i >= 0; i--) {
+    processedStack.push('\n  from ' + wrapCallSite(stack[i], state));
+    state.nextPosition = state.curPosition;
+  }
+  state.curPosition = state.nextPosition = null;
+  return errorString + processedStack.reverse().join('');
+}
+
+// Generate position and snippet of original source with pointer
+function getErrorSource(error) {
+  var match = /\n  from [^(]+ \((.*):(\d+):(\d+)\)/.exec(error.stack);
+  if (match) {
+    var source = match[1];
+    var line = +match[2];
+    var column = +match[3];
+
+    // Support the inline sourceContents inside the source map
+    var contents = fileContentsCache[source];
+
+    // Support files on disk
+    if (!contents && fs && fs.existsSync(source)) {
+      try {
+        contents = fs.readFileSync(source, 'utf8');
+      } catch (er) {
+        contents = '';
+      }
+    }
+
+    // Format the line from the original source code like node does
+    if (contents) {
+      var code = contents.split(/(?:\r\n|\r|\n)/)[line - 1];
+      if (code) {
+        return source + ':' + line + '\n' + code + '\n' +
+          new Array(column).join(' ') + '^';
+      }
+    }
+  }
+  return null;
+}
+
+function printErrorAndExit (error) {
+  var source = getErrorSource(error);
+
+  // Ensure error is printed synchronously and not truncated
+  if (process.stderr._handle && process.stderr._handle.setBlocking) {
+    process.stderr._handle.setBlocking(true);
+  }
+
+  if (typeof error.$full_message === 'function') {
+    var full_message = error.$full_message();
+    while (full_message[full_message.length - 1] == "\n") {
+      full_message = full_message.slice(0, full_message.length - 1);
+    }
+    console.error(full_message);
+  }
+  else {
+    if (source) {
+      console.error();
+      console.error(source);
+    }
+
+    console.error(error.stack);
+  }
+  process.exit(1);
+}
+
+function shimEmitUncaughtException () {
+  var origEmit = process.emit;
+
+  process.emit = function (type) {
+    if (type === 'uncaughtException') {
+      var hasStack = (arguments[1] && arguments[1].stack);
+      var hasListeners = (this.listeners(type).length > 0);
+
+      if (hasStack && !hasListeners) {
+        return printErrorAndExit(arguments[1]);
+      }
+    }
+
+    return origEmit.apply(this, arguments);
+  };
+}
+
+var originalRetrieveFileHandlers = retrieveFileHandlers.slice(0);
+var originalRetrieveMapHandlers = retrieveMapHandlers.slice(0);
+
+exports.wrapCallSite = wrapCallSite;
+exports.getErrorSource = getErrorSource;
+exports.mapSourcePosition = mapSourcePosition;
+exports.retrieveSourceMap = retrieveSourceMap;
+
+exports.install = function(options) {
+  options = options || {};
+
+  if (options.environment) {
+    environment = options.environment;
+    if (["node", "browser", "auto"].indexOf(environment) === -1) {
+      throw new Error("environment " + environment + " was unknown. Available options are {auto, browser, node}")
+    }
+  }
+
+  // Allow sources to be found by methods other than reading the files
+  // directly from disk.
+  if (options.retrieveFile) {
+    if (options.overrideRetrieveFile) {
+      retrieveFileHandlers.length = 0;
+    }
+
+    retrieveFileHandlers.unshift(options.retrieveFile);
+  }
+
+  // Allow source maps to be found by methods other than reading the files
+  // directly from disk.
+  if (options.retrieveSourceMap) {
+    if (options.overrideRetrieveSourceMap) {
+      retrieveMapHandlers.length = 0;
+    }
+
+    retrieveMapHandlers.unshift(options.retrieveSourceMap);
+  }
+
+  // Support runtime transpilers that include inline source maps
+  if (options.hookRequire && !isInBrowser()) {
+    // Use dynamicRequire to avoid including in browser bundles
+    var Module = dynamicRequire(module, 'module');
+    var $compile = Module.prototype._compile;
+
+    if (!$compile.__sourceMapSupport) {
+      Module.prototype._compile = function(content, filename) {
+        fileContentsCache[filename] = content;
+        sourceMapCache[filename] = undefined;
+        return $compile.call(this, content, filename);
+      };
+
+      Module.prototype._compile.__sourceMapSupport = true;
+    }
+  }
+
+  // Configure options
+  if (!emptyCacheBetweenOperations) {
+    emptyCacheBetweenOperations = 'emptyCacheBetweenOperations' in options ?
+      options.emptyCacheBetweenOperations : false;
+  }
+
+  // Install the error reformatter
+  if (!errorFormatterInstalled) {
+    errorFormatterInstalled = true;
+    Error.prepareStackTrace = prepareStackTrace;
+  }
+
+  if (!uncaughtShimInstalled) {
+    var installHandler = 'handleUncaughtExceptions' in options ?
+      options.handleUncaughtExceptions : true;
+
+    // Do not override 'uncaughtException' with our own handler in Node.js
+    // Worker threads. Workers pass the error to the main thread as an event,
+    // rather than printing something to stderr and exiting.
+    try {
+      // We need to use `dynamicRequire` because `require` on it's own will be optimized by WebPack/Browserify.
+      var worker_threads = dynamicRequire(module, 'worker_threads');
+      if (worker_threads.isMainThread === false) {
+        installHandler = false;
+      }
+    } catch(e) {}      
+
+    // Provide the option to not install the uncaught exception handler. This is
+    // to support other uncaught exception handlers (in test frameworks, for
+    // example). If this handler is not installed and there are no other uncaught
+    // exception handlers, uncaught exceptions will be caught by node's built-in
+    // exception handler and the process will still be terminated. However, the
+    // generated JavaScript code will be shown above the stack trace instead of
+    // the original source code.
+    if (installHandler && hasGlobalProcessEventEmitter()) {
+      uncaughtShimInstalled = true;
+      shimEmitUncaughtException();
+    }
+  }
+};
+
+exports.resetRetrieveHandlers = function() {
+  retrieveFileHandlers.length = 0;
+  retrieveMapHandlers.length = 0;
+
+  retrieveFileHandlers = originalRetrieveFileHandlers.slice(0);
+  retrieveMapHandlers = originalRetrieveMapHandlers.slice(0);
+
+  retrieveSourceMap = handlerExec(retrieveMapHandlers);
+  retrieveFile = handlerExec(retrieveFileHandlers);
+}
+
+// Autoinstall.
+exports.install();
+
+// Regenerate the browser version with:
+// browserify lib/opal/cli_runners/source-map-support.js -s sourceMapSupport | uglifyjs -c > lib/opal/cli_runners/source-map-support-browser.js
+
+// = Stacktrace Examples:
+//
+// == Traditional Ruby stacktrace:
+//
+// /Users/elia/Code/opal/lib/opal/cli_runners/system_runner.rb:43:in `call': unhandled exception
+//   from /Users/elia/Code/opal/lib/opal/cli_runners/nodejs.rb:14:in `call'
+//   from /Users/elia/Code/opal/lib/opal/cli_runners.rb:50:in `block in register_runner'
+//   from /Users/elia/Code/opal/lib/opal/cli.rb:62:in `run'
+//   from /Users/elia/Code/opal/exe/opal:24:in `<top (required)>'
+//   from bin/opal:4:in `load'
+//   from bin/opal:4:in `<main>'
+//
+// == Traceback style:
+//
+// Traceback (most recent call last):
+//   6: from bin/opal:4:in `<main>'
+//   5: from bin/opal:4:in `load'
+//   4: from /Users/elia/Code/opal/exe/opal:24:in `<top (required)>'
+//   3: from /Users/elia/Code/opal/lib/opal/cli.rb:62:in `run'
+//   2: from /Users/elia/Code/opal/lib/opal/cli_runners.rb:50:in `block in register_runner'
+//   1: from /Users/elia/Code/opal/lib/opal/cli_runners/nodejs.rb:14:in `call'
+// /Users/elia/Code/opal/lib/opal/cli_runners/system_runner.rb:43:in `call': unhandled exception
+
+}).call(this)}).call(this,require('_process'))
+},{"_process":7,"buffer-from":3,"fs":2,"path":6,"source-map":18}]},{},[])("/lib/opal/cli_runners/source-map-support.js")
+});
diff --git a/lib/opal/cli_runners/source-map-support-node.js b/lib/opal/cli_runners/source-map-support-node.js
new file mode 100644
index 00000000..7e6ce2de
--- /dev/null
+++ b/lib/opal/cli_runners/source-map-support-node.js
@@ -0,0 +1,3755 @@
+(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.sourceMapSupport = f()}})(function(){var define,module,exports;return (function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
+/* eslint-disable node/no-deprecated-api */
+
+var toString = Object.prototype.toString
+
+var isModern = (
+  typeof Buffer !== 'undefined' &&
+  typeof Buffer.alloc === 'function' &&
+  typeof Buffer.allocUnsafe === 'function' &&
+  typeof Buffer.from === 'function'
+)
+
+function isArrayBuffer (input) {
+  return toString.call(input).slice(8, -1) === 'ArrayBuffer'
+}
+
+function fromArrayBuffer (obj, byteOffset, length) {
+  byteOffset >>>= 0
+
+  var maxLength = obj.byteLength - byteOffset
+
+  if (maxLength < 0) {
+    throw new RangeError("'offset' is out of bounds")
+  }
+
+  if (length === undefined) {
+    length = maxLength
+  } else {
+    length >>>= 0
+
+    if (length > maxLength) {
+      throw new RangeError("'length' is out of bounds")
+    }
+  }
+
+  return isModern
+    ? Buffer.from(obj.slice(byteOffset, byteOffset + length))
+    : new Buffer(new Uint8Array(obj.slice(byteOffset, byteOffset + length)))
+}
+
+function fromString (string, encoding) {
+  if (typeof encoding !== 'string' || encoding === '') {
+    encoding = 'utf8'
+  }
+
+  if (!Buffer.isEncoding(encoding)) {
+    throw new TypeError('"encoding" must be a valid string encoding')
+  }
+
+  return isModern
+    ? Buffer.from(string, encoding)
+    : new Buffer(string, encoding)
+}
+
+function bufferFrom (value, encodingOrOffset, length) {
+  if (typeof value === 'number') {
+    throw new TypeError('"value" argument must not be a number')
+  }
+
+  if (isArrayBuffer(value)) {
+    return fromArrayBuffer(value, encodingOrOffset, length)
+  }
+
+  if (typeof value === 'string') {
+    return fromString(value, encodingOrOffset)
+  }
+
+  return isModern
+    ? Buffer.from(value)
+    : new Buffer(value)
+}
+
+module.exports = bufferFrom
+
+},{}],2:[function(require,module,exports){
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+
+var util = require('./util');
+var has = Object.prototype.hasOwnProperty;
+var hasNativeMap = typeof Map !== "undefined";
+
+/**
+ * A data structure which is a combination of an array and a set. Adding a new
+ * member is O(1), testing for membership is O(1), and finding the index of an
+ * element is O(1). Removing elements from the set is not supported. Only
+ * strings are supported for membership.
+ */
+function ArraySet() {
+  this._array = [];
+  this._set = hasNativeMap ? new Map() : Object.create(null);
+}
+
+/**
+ * Static method for creating ArraySet instances from an existing array.
+ */
+ArraySet.fromArray = function ArraySet_fromArray(aArray, aAllowDuplicates) {
+  var set = new ArraySet();
+  for (var i = 0, len = aArray.length; i < len; i++) {
+    set.add(aArray[i], aAllowDuplicates);
+  }
+  return set;
+};
+
+/**
+ * Return how many unique items are in this ArraySet. If duplicates have been
+ * added, than those do not count towards the size.
+ *
+ * @returns Number
+ */
+ArraySet.prototype.size = function ArraySet_size() {
+  return hasNativeMap ? this._set.size : Object.getOwnPropertyNames(this._set).length;
+};
+
+/**
+ * Add the given string to this set.
+ *
+ * @param String aStr
+ */
+ArraySet.prototype.add = function ArraySet_add(aStr, aAllowDuplicates) {
+  var sStr = hasNativeMap ? aStr : util.toSetString(aStr);
+  var isDuplicate = hasNativeMap ? this.has(aStr) : has.call(this._set, sStr);
+  var idx = this._array.length;
+  if (!isDuplicate || aAllowDuplicates) {
+    this._array.push(aStr);
+  }
+  if (!isDuplicate) {
+    if (hasNativeMap) {
+      this._set.set(aStr, idx);
+    } else {
+      this._set[sStr] = idx;
+    }
+  }
+};
+
+/**
+ * Is the given string a member of this set?
+ *
+ * @param String aStr
+ */
+ArraySet.prototype.has = function ArraySet_has(aStr) {
+  if (hasNativeMap) {
+    return this._set.has(aStr);
+  } else {
+    var sStr = util.toSetString(aStr);
+    return has.call(this._set, sStr);
+  }
+};
+
+/**
+ * What is the index of the given string in the array?
+ *
+ * @param String aStr
+ */
+ArraySet.prototype.indexOf = function ArraySet_indexOf(aStr) {
+  if (hasNativeMap) {
+    var idx = this._set.get(aStr);
+    if (idx >= 0) {
+        return idx;
+    }
+  } else {
+    var sStr = util.toSetString(aStr);
+    if (has.call(this._set, sStr)) {
+      return this._set[sStr];
+    }
+  }
+
+  throw new Error('"' + aStr + '" is not in the set.');
+};
+
+/**
+ * What is the element at the given index?
+ *
+ * @param Number aIdx
+ */
+ArraySet.prototype.at = function ArraySet_at(aIdx) {
+  if (aIdx >= 0 && aIdx < this._array.length) {
+    return this._array[aIdx];
+  }
+  throw new Error('No element indexed by ' + aIdx);
+};
+
+/**
+ * Returns the array representation of this set (which has the proper indices
+ * indicated by indexOf). Note that this is a copy of the internal array used
+ * for storing the members so that no one can mess with internal state.
+ */
+ArraySet.prototype.toArray = function ArraySet_toArray() {
+  return this._array.slice();
+};
+
+exports.ArraySet = ArraySet;
+
+},{"./util":11}],3:[function(require,module,exports){
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ *
+ * Based on the Base 64 VLQ implementation in Closure Compiler:
+ * https://code.google.com/p/closure-compiler/source/browse/trunk/src/com/google/debugging/sourcemap/Base64VLQ.java
+ *
+ * Copyright 2011 The Closure Compiler Authors. All rights reserved.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above
+ *    copyright notice, this list of conditions and the following
+ *    disclaimer in the documentation and/or other materials provided
+ *    with the distribution.
+ *  * Neither the name of Google Inc. nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+var base64 = require('./base64');
+
+// A single base 64 digit can contain 6 bits of data. For the base 64 variable
+// length quantities we use in the source map spec, the first bit is the sign,
+// the next four bits are the actual value, and the 6th bit is the
+// continuation bit. The continuation bit tells us whether there are more
+// digits in this value following this digit.
+//
+//   Continuation
+//   |    Sign
+//   |    |
+//   V    V
+//   101011
+
+var VLQ_BASE_SHIFT = 5;
+
+// binary: 100000
+var VLQ_BASE = 1 << VLQ_BASE_SHIFT;
+
+// binary: 011111
+var VLQ_BASE_MASK = VLQ_BASE - 1;
+
+// binary: 100000
+var VLQ_CONTINUATION_BIT = VLQ_BASE;
+
+/**
+ * Converts from a two-complement value to a value where the sign bit is
+ * placed in the least significant bit.  For example, as decimals:
+ *   1 becomes 2 (10 binary), -1 becomes 3 (11 binary)
+ *   2 becomes 4 (100 binary), -2 becomes 5 (101 binary)
+ */
+function toVLQSigned(aValue) {
+  return aValue < 0
+    ? ((-aValue) << 1) + 1
+    : (aValue << 1) + 0;
+}
+
+/**
+ * Converts to a two-complement value from a value where the sign bit is
+ * placed in the least significant bit.  For example, as decimals:
+ *   2 (10 binary) becomes 1, 3 (11 binary) becomes -1
+ *   4 (100 binary) becomes 2, 5 (101 binary) becomes -2
+ */
+function fromVLQSigned(aValue) {
+  var isNegative = (aValue & 1) === 1;
+  var shifted = aValue >> 1;
+  return isNegative
+    ? -shifted
+    : shifted;
+}
+
+/**
+ * Returns the base 64 VLQ encoded value.
+ */
+exports.encode = function base64VLQ_encode(aValue) {
+  var encoded = "";
+  var digit;
+
+  var vlq = toVLQSigned(aValue);
+
+  do {
+    digit = vlq & VLQ_BASE_MASK;
+    vlq >>>= VLQ_BASE_SHIFT;
+    if (vlq > 0) {
+      // There are still more digits in this value, so we must make sure the
+      // continuation bit is marked.
+      digit |= VLQ_CONTINUATION_BIT;
+    }
+    encoded += base64.encode(digit);
+  } while (vlq > 0);
+
+  return encoded;
+};
+
+/**
+ * Decodes the next base 64 VLQ value from the given string and returns the
+ * value and the rest of the string via the out parameter.
+ */
+exports.decode = function base64VLQ_decode(aStr, aIndex, aOutParam) {
+  var strLen = aStr.length;
+  var result = 0;
+  var shift = 0;
+  var continuation, digit;
+
+  do {
+    if (aIndex >= strLen) {
+      throw new Error("Expected more digits in base 64 VLQ value.");
+    }
+
+    digit = base64.decode(aStr.charCodeAt(aIndex++));
+    if (digit === -1) {
+      throw new Error("Invalid base64 digit: " + aStr.charAt(aIndex - 1));
+    }
+
+    continuation = !!(digit & VLQ_CONTINUATION_BIT);
+    digit &= VLQ_BASE_MASK;
+    result = result + (digit << shift);
+    shift += VLQ_BASE_SHIFT;
+  } while (continuation);
+
+  aOutParam.value = fromVLQSigned(result);
+  aOutParam.rest = aIndex;
+};
+
+},{"./base64":4}],4:[function(require,module,exports){
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+
+var intToCharMap = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'.split('');
+
+/**
+ * Encode an integer in the range of 0 to 63 to a single base 64 digit.
+ */
+exports.encode = function (number) {
+  if (0 <= number && number < intToCharMap.length) {
+    return intToCharMap[number];
+  }
+  throw new TypeError("Must be between 0 and 63: " + number);
+};
+
+/**
+ * Decode a single base 64 character code digit to an integer. Returns -1 on
+ * failure.
+ */
+exports.decode = function (charCode) {
+  var bigA = 65;     // 'A'
+  var bigZ = 90;     // 'Z'
+
+  var littleA = 97;  // 'a'
+  var littleZ = 122; // 'z'
+
+  var zero = 48;     // '0'
+  var nine = 57;     // '9'
+
+  var plus = 43;     // '+'
+  var slash = 47;    // '/'
+
+  var littleOffset = 26;
+  var numberOffset = 52;
+
+  // 0 - 25: ABCDEFGHIJKLMNOPQRSTUVWXYZ
+  if (bigA <= charCode && charCode <= bigZ) {
+    return (charCode - bigA);
+  }
+
+  // 26 - 51: abcdefghijklmnopqrstuvwxyz
+  if (littleA <= charCode && charCode <= littleZ) {
+    return (charCode - littleA + littleOffset);
+  }
+
+  // 52 - 61: 0123456789
+  if (zero <= charCode && charCode <= nine) {
+    return (charCode - zero + numberOffset);
+  }
+
+  // 62: +
+  if (charCode == plus) {
+    return 62;
+  }
+
+  // 63: /
+  if (charCode == slash) {
+    return 63;
+  }
+
+  // Invalid base64 digit.
+  return -1;
+};
+
+},{}],5:[function(require,module,exports){
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+
+exports.GREATEST_LOWER_BOUND = 1;
+exports.LEAST_UPPER_BOUND = 2;
+
+/**
+ * Recursive implementation of binary search.
+ *
+ * @param aLow Indices here and lower do not contain the needle.
+ * @param aHigh Indices here and higher do not contain the needle.
+ * @param aNeedle The element being searched for.
+ * @param aHaystack The non-empty array being searched.
+ * @param aCompare Function which takes two elements and returns -1, 0, or 1.
+ * @param aBias Either 'binarySearch.GREATEST_LOWER_BOUND' or
+ *     'binarySearch.LEAST_UPPER_BOUND'. Specifies whether to return the
+ *     closest element that is smaller than or greater than the one we are
+ *     searching for, respectively, if the exact element cannot be found.
+ */
+function recursiveSearch(aLow, aHigh, aNeedle, aHaystack, aCompare, aBias) {
+  // This function terminates when one of the following is true:
+  //
+  //   1. We find the exact element we are looking for.
+  //
+  //   2. We did not find the exact element, but we can return the index of
+  //      the next-closest element.
+  //
+  //   3. We did not find the exact element, and there is no next-closest
+  //      element than the one we are searching for, so we return -1.
+  var mid = Math.floor((aHigh - aLow) / 2) + aLow;
+  var cmp = aCompare(aNeedle, aHaystack[mid], true);
+  if (cmp === 0) {
+    // Found the element we are looking for.
+    return mid;
+  }
+  else if (cmp > 0) {
+    // Our needle is greater than aHaystack[mid].
+    if (aHigh - mid > 1) {
+      // The element is in the upper half.
+      return recursiveSearch(mid, aHigh, aNeedle, aHaystack, aCompare, aBias);
+    }
+
+    // The exact needle element was not found in this haystack. Determine if
+    // we are in termination case (3) or (2) and return the appropriate thing.
+    if (aBias == exports.LEAST_UPPER_BOUND) {
+      return aHigh < aHaystack.length ? aHigh : -1;
+    } else {
+      return mid;
+    }
+  }
+  else {
+    // Our needle is less than aHaystack[mid].
+    if (mid - aLow > 1) {
+      // The element is in the lower half.
+      return recursiveSearch(aLow, mid, aNeedle, aHaystack, aCompare, aBias);
+    }
+
+    // we are in termination case (3) or (2) and return the appropriate thing.
+    if (aBias == exports.LEAST_UPPER_BOUND) {
+      return mid;
+    } else {
+      return aLow < 0 ? -1 : aLow;
+    }
+  }
+}
+
+/**
+ * This is an implementation of binary search which will always try and return
+ * the index of the closest element if there is no exact hit. This is because
+ * mappings between original and generated line/col pairs are single points,
+ * and there is an implicit region between each of them, so a miss just means
+ * that you aren't on the very start of a region.
+ *
+ * @param aNeedle The element you are looking for.
+ * @param aHaystack The array that is being searched.
+ * @param aCompare A function which takes the needle and an element in the
+ *     array and returns -1, 0, or 1 depending on whether the needle is less
+ *     than, equal to, or greater than the element, respectively.
+ * @param aBias Either 'binarySearch.GREATEST_LOWER_BOUND' or
+ *     'binarySearch.LEAST_UPPER_BOUND'. Specifies whether to return the
+ *     closest element that is smaller than or greater than the one we are
+ *     searching for, respectively, if the exact element cannot be found.
+ *     Defaults to 'binarySearch.GREATEST_LOWER_BOUND'.
+ */
+exports.search = function search(aNeedle, aHaystack, aCompare, aBias) {
+  if (aHaystack.length === 0) {
+    return -1;
+  }
+
+  var index = recursiveSearch(-1, aHaystack.length, aNeedle, aHaystack,
+                              aCompare, aBias || exports.GREATEST_LOWER_BOUND);
+  if (index < 0) {
+    return -1;
+  }
+
+  // We have found either the exact element, or the next-closest element than
+  // the one we are searching for. However, there may be more than one such
+  // element. Make sure we always return the smallest of these.
+  while (index - 1 >= 0) {
+    if (aCompare(aHaystack[index], aHaystack[index - 1], true) !== 0) {
+      break;
+    }
+    --index;
+  }
+
+  return index;
+};
+
+},{}],6:[function(require,module,exports){
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2014 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+
+var util = require('./util');
+
+/**
+ * Determine whether mappingB is after mappingA with respect to generated
+ * position.
+ */
+function generatedPositionAfter(mappingA, mappingB) {
+  // Optimized for most common case
+  var lineA = mappingA.generatedLine;
+  var lineB = mappingB.generatedLine;
+  var columnA = mappingA.generatedColumn;
+  var columnB = mappingB.generatedColumn;
+  return lineB > lineA || lineB == lineA && columnB >= columnA ||
+         util.compareByGeneratedPositionsInflated(mappingA, mappingB) <= 0;
+}
+
+/**
+ * A data structure to provide a sorted view of accumulated mappings in a
+ * performance conscious manner. It trades a neglibable overhead in general
+ * case for a large speedup in case of mappings being added in order.
+ */
+function MappingList() {
+  this._array = [];
+  this._sorted = true;
+  // Serves as infimum
+  this._last = {generatedLine: -1, generatedColumn: 0};
+}
+
+/**
+ * Iterate through internal items. This method takes the same arguments that
+ * `Array.prototype.forEach` takes.
+ *
+ * NOTE: The order of the mappings is NOT guaranteed.
+ */
+MappingList.prototype.unsortedForEach =
+  function MappingList_forEach(aCallback, aThisArg) {
+    this._array.forEach(aCallback, aThisArg);
+  };
+
+/**
+ * Add the given source mapping.
+ *
+ * @param Object aMapping
+ */
+MappingList.prototype.add = function MappingList_add(aMapping) {
+  if (generatedPositionAfter(this._last, aMapping)) {
+    this._last = aMapping;
+    this._array.push(aMapping);
+  } else {
+    this._sorted = false;
+    this._array.push(aMapping);
+  }
+};
+
+/**
+ * Returns the flat, sorted array of mappings. The mappings are sorted by
+ * generated position.
+ *
+ * WARNING: This method returns internal data without copying, for
+ * performance. The return value must NOT be mutated, and should be treated as
+ * an immutable borrow. If you want to take ownership, you must make your own
+ * copy.
+ */
+MappingList.prototype.toArray = function MappingList_toArray() {
+  if (!this._sorted) {
+    this._array.sort(util.compareByGeneratedPositionsInflated);
+    this._sorted = true;
+  }
+  return this._array;
+};
+
+exports.MappingList = MappingList;
+
+},{"./util":11}],7:[function(require,module,exports){
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+
+// It turns out that some (most?) JavaScript engines don't self-host
+// `Array.prototype.sort`. This makes sense because C++ will likely remain
+// faster than JS when doing raw CPU-intensive sorting. However, when using a
+// custom comparator function, calling back and forth between the VM's C++ and
+// JIT'd JS is rather slow *and* loses JIT type information, resulting in
+// worse generated code for the comparator function than would be optimal. In
+// fact, when sorting with a comparator, these costs outweigh the benefits of
+// sorting in C++. By using our own JS-implemented Quick Sort (below), we get
+// a ~3500ms mean speed-up in `bench/bench.html`.
+
+/**
+ * Swap the elements indexed by `x` and `y` in the array `ary`.
+ *
+ * @param {Array} ary
+ *        The array.
+ * @param {Number} x
+ *        The index of the first item.
+ * @param {Number} y
+ *        The index of the second item.
+ */
+function swap(ary, x, y) {
+  var temp = ary[x];
+  ary[x] = ary[y];
+  ary[y] = temp;
+}
+
+/**
+ * Returns a random integer within the range `low .. high` inclusive.
+ *
+ * @param {Number} low
+ *        The lower bound on the range.
+ * @param {Number} high
+ *        The upper bound on the range.
+ */
+function randomIntInRange(low, high) {
+  return Math.round(low + (Math.random() * (high - low)));
+}
+
+/**
+ * The Quick Sort algorithm.
+ *
+ * @param {Array} ary
+ *        An array to sort.
+ * @param {function} comparator
+ *        Function to use to compare two items.
+ * @param {Number} p
+ *        Start index of the array
+ * @param {Number} r
+ *        End index of the array
+ */
+function doQuickSort(ary, comparator, p, r) {
+  // If our lower bound is less than our upper bound, we (1) partition the
+  // array into two pieces and (2) recurse on each half. If it is not, this is
+  // the empty array and our base case.
+
+  if (p < r) {
+    // (1) Partitioning.
+    //
+    // The partitioning chooses a pivot between `p` and `r` and moves all
+    // elements that are less than or equal to the pivot to the before it, and
+    // all the elements that are greater than it after it. The effect is that
+    // once partition is done, the pivot is in the exact place it will be when
+    // the array is put in sorted order, and it will not need to be moved
+    // again. This runs in O(n) time.
+
+    // Always choose a random pivot so that an input array which is reverse
+    // sorted does not cause O(n^2) running time.
+    var pivotIndex = randomIntInRange(p, r);
+    var i = p - 1;
+
+    swap(ary, pivotIndex, r);
+    var pivot = ary[r];
+
+    // Immediately after `j` is incremented in this loop, the following hold
+    // true:
+    //
+    //   * Every element in `ary[p .. i]` is less than or equal to the pivot.
+    //
+    //   * Every element in `ary[i+1 .. j-1]` is greater than the pivot.
+    for (var j = p; j < r; j++) {
+      if (comparator(ary[j], pivot) <= 0) {
+        i += 1;
+        swap(ary, i, j);
+      }
+    }
+
+    swap(ary, i + 1, j);
+    var q = i + 1;
+
+    // (2) Recurse on each half.
+
+    doQuickSort(ary, comparator, p, q - 1);
+    doQuickSort(ary, comparator, q + 1, r);
+  }
+}
+
+/**
+ * Sort the given array in-place with the given comparator function.
+ *
+ * @param {Array} ary
+ *        An array to sort.
+ * @param {function} comparator
+ *        Function to use to compare two items.
+ */
+exports.quickSort = function (ary, comparator) {
+  doQuickSort(ary, comparator, 0, ary.length - 1);
+};
+
+},{}],8:[function(require,module,exports){
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+
+var util = require('./util');
+var binarySearch = require('./binary-search');
+var ArraySet = require('./array-set').ArraySet;
+var base64VLQ = require('./base64-vlq');
+var quickSort = require('./quick-sort').quickSort;
+
+function SourceMapConsumer(aSourceMap) {
+  var sourceMap = aSourceMap;
+  if (typeof aSourceMap === 'string') {
+    sourceMap = JSON.parse(aSourceMap.replace(/^\)\]\}'/, ''));
+  }
+
+  return sourceMap.sections != null
+    ? new IndexedSourceMapConsumer(sourceMap)
+    : new BasicSourceMapConsumer(sourceMap);
+}
+
+SourceMapConsumer.fromSourceMap = function(aSourceMap) {
+  return BasicSourceMapConsumer.fromSourceMap(aSourceMap);
+}
+
+/**
+ * The version of the source mapping spec that we are consuming.
+ */
+SourceMapConsumer.prototype._version = 3;
+
+// `__generatedMappings` and `__originalMappings` are arrays that hold the
+// parsed mapping coordinates from the source map's "mappings" attribute. They
+// are lazily instantiated, accessed via the `_generatedMappings` and
+// `_originalMappings` getters respectively, and we only parse the mappings
+// and create these arrays once queried for a source location. We jump through
+// these hoops because there can be many thousands of mappings, and parsing
+// them is expensive, so we only want to do it if we must.
+//
+// Each object in the arrays is of the form:
+//
+//     {
+//       generatedLine: The line number in the generated code,
+//       generatedColumn: The column number in the generated code,
+//       source: The path to the original source file that generated this
+//               chunk of code,
+//       originalLine: The line number in the original source that
+//                     corresponds to this chunk of generated code,
+//       originalColumn: The column number in the original source that
+//                       corresponds to this chunk of generated code,
+//       name: The name of the original symbol which generated this chunk of
+//             code.
+//     }
+//
+// All properties except for `generatedLine` and `generatedColumn` can be
+// `null`.
+//
+// `_generatedMappings` is ordered by the generated positions.
+//
+// `_originalMappings` is ordered by the original positions.
+
+SourceMapConsumer.prototype.__generatedMappings = null;
+Object.defineProperty(SourceMapConsumer.prototype, '_generatedMappings', {
+  get: function () {
+    if (!this.__generatedMappings) {
+      this._parseMappings(this._mappings, this.sourceRoot);
+    }
+
+    return this.__generatedMappings;
+  }
+});
+
+SourceMapConsumer.prototype.__originalMappings = null;
+Object.defineProperty(SourceMapConsumer.prototype, '_originalMappings', {
+  get: function () {
+    if (!this.__originalMappings) {
+      this._parseMappings(this._mappings, this.sourceRoot);
+    }
+
+    return this.__originalMappings;
+  }
+});
+
+SourceMapConsumer.prototype._charIsMappingSeparator =
+  function SourceMapConsumer_charIsMappingSeparator(aStr, index) {
+    var c = aStr.charAt(index);
+    return c === ";" || c === ",";
+  };
+
+/**
+ * Parse the mappings in a string in to a data structure which we can easily
+ * query (the ordered arrays in the `this.__generatedMappings` and
+ * `this.__originalMappings` properties).
+ */
+SourceMapConsumer.prototype._parseMappings =
+  function SourceMapConsumer_parseMappings(aStr, aSourceRoot) {
+    throw new Error("Subclasses must implement _parseMappings");
+  };
+
+SourceMapConsumer.GENERATED_ORDER = 1;
+SourceMapConsumer.ORIGINAL_ORDER = 2;
+
+SourceMapConsumer.GREATEST_LOWER_BOUND = 1;
+SourceMapConsumer.LEAST_UPPER_BOUND = 2;
+
+/**
+ * Iterate over each mapping between an original source/line/column and a
+ * generated line/column in this source map.
+ *
+ * @param Function aCallback
+ *        The function that is called with each mapping.
+ * @param Object aContext
+ *        Optional. If specified, this object will be the value of `this` every
+ *        time that `aCallback` is called.
+ * @param aOrder
+ *        Either `SourceMapConsumer.GENERATED_ORDER` or
+ *        `SourceMapConsumer.ORIGINAL_ORDER`. Specifies whether you want to
+ *        iterate over the mappings sorted by the generated file's line/column
+ *        order or the original's source/line/column order, respectively. Defaults to
+ *        `SourceMapConsumer.GENERATED_ORDER`.
+ */
+SourceMapConsumer.prototype.eachMapping =
+  function SourceMapConsumer_eachMapping(aCallback, aContext, aOrder) {
+    var context = aContext || null;
+    var order = aOrder || SourceMapConsumer.GENERATED_ORDER;
+
+    var mappings;
+    switch (order) {
+    case SourceMapConsumer.GENERATED_ORDER:
+      mappings = this._generatedMappings;
+      break;
+    case SourceMapConsumer.ORIGINAL_ORDER:
+      mappings = this._originalMappings;
+      break;
+    default:
+      throw new Error("Unknown order of iteration.");
+    }
+
+    var sourceRoot = this.sourceRoot;
+    mappings.map(function (mapping) {
+      var source = mapping.source === null ? null : this._sources.at(mapping.source);
+      if (source != null && sourceRoot != null) {
+        source = util.join(sourceRoot, source);
+      }
+      return {
+        source: source,
+        generatedLine: mapping.generatedLine,
+        generatedColumn: mapping.generatedColumn,
+        originalLine: mapping.originalLine,
+        originalColumn: mapping.originalColumn,
+        name: mapping.name === null ? null : this._names.at(mapping.name)
+      };
+    }, this).forEach(aCallback, context);
+  };
+
+/**
+ * Returns all generated line and column information for the original source,
+ * line, and column provided. If no column is provided, returns all mappings
+ * corresponding to a either the line we are searching for or the next
+ * closest line that has any mappings. Otherwise, returns all mappings
+ * corresponding to the given line and either the column we are searching for
+ * or the next closest column that has any offsets.
+ *
+ * The only argument is an object with the following properties:
+ *
+ *   - source: The filename of the original source.
+ *   - line: The line number in the original source.
+ *   - column: Optional. the column number in the original source.
+ *
+ * and an array of objects is returned, each with the following properties:
+ *
+ *   - line: The line number in the generated source, or null.
+ *   - column: The column number in the generated source, or null.
+ */
+SourceMapConsumer.prototype.allGeneratedPositionsFor =
+  function SourceMapConsumer_allGeneratedPositionsFor(aArgs) {
+    var line = util.getArg(aArgs, 'line');
+
+    // When there is no exact match, BasicSourceMapConsumer.prototype._findMapping
+    // returns the index of the closest mapping less than the needle. By
+    // setting needle.originalColumn to 0, we thus find the last mapping for
+    // the given line, provided such a mapping exists.
+    var needle = {
+      source: util.getArg(aArgs, 'source'),
+      originalLine: line,
+      originalColumn: util.getArg(aArgs, 'column', 0)
+    };
+
+    if (this.sourceRoot != null) {
+      needle.source = util.relative(this.sourceRoot, needle.source);
+    }
+    if (!this._sources.has(needle.source)) {
+      return [];
+    }
+    needle.source = this._sources.indexOf(needle.source);
+
+    var mappings = [];
+
+    var index = this._findMapping(needle,
+                                  this._originalMappings,
+                                  "originalLine",
+                                  "originalColumn",
+                                  util.compareByOriginalPositions,
+                                  binarySearch.LEAST_UPPER_BOUND);
+    if (index >= 0) {
+      var mapping = this._originalMappings[index];
+
+      if (aArgs.column === undefined) {
+        var originalLine = mapping.originalLine;
+
+        // Iterate until either we run out of mappings, or we run into
+        // a mapping for a different line than the one we found. Since
+        // mappings are sorted, this is guaranteed to find all mappings for
+        // the line we found.
+        while (mapping && mapping.originalLine === originalLine) {
+          mappings.push({
+            line: util.getArg(mapping, 'generatedLine', null),
+            column: util.getArg(mapping, 'generatedColumn', null),
+            lastColumn: util.getArg(mapping, 'lastGeneratedColumn', null)
+          });
+
+          mapping = this._originalMappings[++index];
+        }
+      } else {
+        var originalColumn = mapping.originalColumn;
+
+        // Iterate until either we run out of mappings, or we run into
+        // a mapping for a different line than the one we were searching for.
+        // Since mappings are sorted, this is guaranteed to find all mappings for
+        // the line we are searching for.
+        while (mapping &&
+               mapping.originalLine === line &&
+               mapping.originalColumn == originalColumn) {
+          mappings.push({
+            line: util.getArg(mapping, 'generatedLine', null),
+            column: util.getArg(mapping, 'generatedColumn', null),
+            lastColumn: util.getArg(mapping, 'lastGeneratedColumn', null)
+          });
+
+          mapping = this._originalMappings[++index];
+        }
+      }
+    }
+
+    return mappings;
+  };
+
+exports.SourceMapConsumer = SourceMapConsumer;
+
+/**
+ * A BasicSourceMapConsumer instance represents a parsed source map which we can
+ * query for information about the original file positions by giving it a file
+ * position in the generated source.
+ *
+ * The only parameter is the raw source map (either as a JSON string, or
+ * already parsed to an object). According to the spec, source maps have the
+ * following attributes:
+ *
+ *   - version: Which version of the source map spec this map is following.
+ *   - sources: An array of URLs to the original source files.
+ *   - names: An array of identifiers which can be referrenced by individual mappings.
+ *   - sourceRoot: Optional. The URL root from which all sources are relative.
+ *   - sourcesContent: Optional. An array of contents of the original source files.
+ *   - mappings: A string of base64 VLQs which contain the actual mappings.
+ *   - file: Optional. The generated file this source map is associated with.
+ *
+ * Here is an example source map, taken from the source map spec[0]:
+ *
+ *     {
+ *       version : 3,
+ *       file: "out.js",
+ *       sourceRoot : "",
+ *       sources: ["foo.js", "bar.js"],
+ *       names: ["src", "maps", "are", "fun"],
+ *       mappings: "AA,AB;;ABCDE;"
+ *     }
+ *
+ * [0]: https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit?pli=1#
+ */
+function BasicSourceMapConsumer(aSourceMap) {
+  var sourceMap = aSourceMap;
+  if (typeof aSourceMap === 'string') {
+    sourceMap = JSON.parse(aSourceMap.replace(/^\)\]\}'/, ''));
+  }
+
+  var version = util.getArg(sourceMap, 'version');
+  var sources = util.getArg(sourceMap, 'sources');
+  // Sass 3.3 leaves out the 'names' array, so we deviate from the spec (which
+  // requires the array) to play nice here.
+  var names = util.getArg(sourceMap, 'names', []);
+  var sourceRoot = util.getArg(sourceMap, 'sourceRoot', null);
+  var sourcesContent = util.getArg(sourceMap, 'sourcesContent', null);
+  var mappings = util.getArg(sourceMap, 'mappings');
+  var file = util.getArg(sourceMap, 'file', null);
+
+  // Once again, Sass deviates from the spec and supplies the version as a
+  // string rather than a number, so we use loose equality checking here.
+  if (version != this._version) {
+    throw new Error('Unsupported version: ' + version);
+  }
+
+  sources = sources
+    .map(String)
+    // Some source maps produce relative source paths like "./foo.js" instead of
+    // "foo.js".  Normalize these first so that future comparisons will succeed.
+    // See bugzil.la/1090768.
+    .map(util.normalize)
+    // Always ensure that absolute sources are internally stored relative to
+    // the source root, if the source root is absolute. Not doing this would
+    // be particularly problematic when the source root is a prefix of the
+    // source (valid, but why??). See github issue #199 and bugzil.la/1188982.
+    .map(function (source) {
+      return sourceRoot && util.isAbsolute(sourceRoot) && util.isAbsolute(source)
+        ? util.relative(sourceRoot, source)
+        : source;
+    });
+
+  // Pass `true` below to allow duplicate names and sources. While source maps
+  // are intended to be compressed and deduplicated, the TypeScript compiler
+  // sometimes generates source maps with duplicates in them. See Github issue
+  // #72 and bugzil.la/889492.
+  this._names = ArraySet.fromArray(names.map(String), true);
+  this._sources = ArraySet.fromArray(sources, true);
+
+  this.sourceRoot = sourceRoot;
+  this.sourcesContent = sourcesContent;
+  this._mappings = mappings;
+  this.file = file;
+}
+
+BasicSourceMapConsumer.prototype = Object.create(SourceMapConsumer.prototype);
+BasicSourceMapConsumer.prototype.consumer = SourceMapConsumer;
+
+/**
+ * Create a BasicSourceMapConsumer from a SourceMapGenerator.
+ *
+ * @param SourceMapGenerator aSourceMap
+ *        The source map that will be consumed.
+ * @returns BasicSourceMapConsumer
+ */
+BasicSourceMapConsumer.fromSourceMap =
+  function SourceMapConsumer_fromSourceMap(aSourceMap) {
+    var smc = Object.create(BasicSourceMapConsumer.prototype);
+
+    var names = smc._names = ArraySet.fromArray(aSourceMap._names.toArray(), true);
+    var sources = smc._sources = ArraySet.fromArray(aSourceMap._sources.toArray(), true);
+    smc.sourceRoot = aSourceMap._sourceRoot;
+    smc.sourcesContent = aSourceMap._generateSourcesContent(smc._sources.toArray(),
+                                                            smc.sourceRoot);
+    smc.file = aSourceMap._file;
+
+    // Because we are modifying the entries (by converting string sources and
+    // names to indices into the sources and names ArraySets), we have to make
+    // a copy of the entry or else bad things happen. Shared mutable state
+    // strikes again! See github issue #191.
+
+    var generatedMappings = aSourceMap._mappings.toArray().slice();
+    var destGeneratedMappings = smc.__generatedMappings = [];
+    var destOriginalMappings = smc.__originalMappings = [];
+
+    for (var i = 0, length = generatedMappings.length; i < length; i++) {
+      var srcMapping = generatedMappings[i];
+      var destMapping = new Mapping;
+      destMapping.generatedLine = srcMapping.generatedLine;
+      destMapping.generatedColumn = srcMapping.generatedColumn;
+
+      if (srcMapping.source) {
+        destMapping.source = sources.indexOf(srcMapping.source);
+        destMapping.originalLine = srcMapping.originalLine;
+        destMapping.originalColumn = srcMapping.originalColumn;
+
+        if (srcMapping.name) {
+          destMapping.name = names.indexOf(srcMapping.name);
+        }
+
+        destOriginalMappings.push(destMapping);
+      }
+
+      destGeneratedMappings.push(destMapping);
+    }
+
+    quickSort(smc.__originalMappings, util.compareByOriginalPositions);
+
+    return smc;
+  };
+
+/**
+ * The version of the source mapping spec that we are consuming.
+ */
+BasicSourceMapConsumer.prototype._version = 3;
+
+/**
+ * The list of original sources.
+ */
+Object.defineProperty(BasicSourceMapConsumer.prototype, 'sources', {
+  get: function () {
+    return this._sources.toArray().map(function (s) {
+      return this.sourceRoot != null ? util.join(this.sourceRoot, s) : s;
+    }, this);
+  }
+});
+
+/**
+ * Provide the JIT with a nice shape / hidden class.
+ */
+function Mapping() {
+  this.generatedLine = 0;
+  this.generatedColumn = 0;
+  this.source = null;
+  this.originalLine = null;
+  this.originalColumn = null;
+  this.name = null;
+}
+
+/**
+ * Parse the mappings in a string in to a data structure which we can easily
+ * query (the ordered arrays in the `this.__generatedMappings` and
+ * `this.__originalMappings` properties).
+ */
+BasicSourceMapConsumer.prototype._parseMappings =
+  function SourceMapConsumer_parseMappings(aStr, aSourceRoot) {
+    var generatedLine = 1;
+    var previousGeneratedColumn = 0;
+    var previousOriginalLine = 0;
+    var previousOriginalColumn = 0;
+    var previousSource = 0;
+    var previousName = 0;
+    var length = aStr.length;
+    var index = 0;
+    var cachedSegments = {};
+    var temp = {};
+    var originalMappings = [];
+    var generatedMappings = [];
+    var mapping, str, segment, end, value;
+
+    while (index < length) {
+      if (aStr.charAt(index) === ';') {
+        generatedLine++;
+        index++;
+        previousGeneratedColumn = 0;
+      }
+      else if (aStr.charAt(index) === ',') {
+        index++;
+      }
+      else {
+        mapping = new Mapping();
+        mapping.generatedLine = generatedLine;
+
+        // Because each offset is encoded relative to the previous one,
+        // many segments often have the same encoding. We can exploit this
+        // fact by caching the parsed variable length fields of each segment,
+        // allowing us to avoid a second parse if we encounter the same
+        // segment again.
+        for (end = index; end < length; end++) {
+          if (this._charIsMappingSeparator(aStr, end)) {
+            break;
+          }
+        }
+        str = aStr.slice(index, end);
+
+        segment = cachedSegments[str];
+        if (segment) {
+          index += str.length;
+        } else {
+          segment = [];
+          while (index < end) {
+            base64VLQ.decode(aStr, index, temp);
+            value = temp.value;
+            index = temp.rest;
+            segment.push(value);
+          }
+
+          if (segment.length === 2) {
+            throw new Error('Found a source, but no line and column');
+          }
+
+          if (segment.length === 3) {
+            throw new Error('Found a source and line, but no column');
+          }
+
+          cachedSegments[str] = segment;
+        }
+
+        // Generated column.
+        mapping.generatedColumn = previousGeneratedColumn + segment[0];
+        previousGeneratedColumn = mapping.generatedColumn;
+
+        if (segment.length > 1) {
+          // Original source.
+          mapping.source = previousSource + segment[1];
+          previousSource += segment[1];
+
+          // Original line.
+          mapping.originalLine = previousOriginalLine + segment[2];
+          previousOriginalLine = mapping.originalLine;
+          // Lines are stored 0-based
+          mapping.originalLine += 1;
+
+          // Original column.
+          mapping.originalColumn = previousOriginalColumn + segment[3];
+          previousOriginalColumn = mapping.originalColumn;
+
+          if (segment.length > 4) {
+            // Original name.
+            mapping.name = previousName + segment[4];
+            previousName += segment[4];
+          }
+        }
+
+        generatedMappings.push(mapping);
+        if (typeof mapping.originalLine === 'number') {
+          originalMappings.push(mapping);
+        }
+      }
+    }
+
+    quickSort(generatedMappings, util.compareByGeneratedPositionsDeflated);
+    this.__generatedMappings = generatedMappings;
+
+    quickSort(originalMappings, util.compareByOriginalPositions);
+    this.__originalMappings = originalMappings;
+  };
+
+/**
+ * Find the mapping that best matches the hypothetical "needle" mapping that
+ * we are searching for in the given "haystack" of mappings.
+ */
+BasicSourceMapConsumer.prototype._findMapping =
+  function SourceMapConsumer_findMapping(aNeedle, aMappings, aLineName,
+                                         aColumnName, aComparator, aBias) {
+    // To return the position we are searching for, we must first find the
+    // mapping for the given position and then return the opposite position it
+    // points to. Because the mappings are sorted, we can use binary search to
+    // find the best mapping.
+
+    if (aNeedle[aLineName] <= 0) {
+      throw new TypeError('Line must be greater than or equal to 1, got '
+                          + aNeedle[aLineName]);
+    }
+    if (aNeedle[aColumnName] < 0) {
+      throw new TypeError('Column must be greater than or equal to 0, got '
+                          + aNeedle[aColumnName]);
+    }
+
+    return binarySearch.search(aNeedle, aMappings, aComparator, aBias);
+  };
+
+/**
+ * Compute the last column for each generated mapping. The last column is
+ * inclusive.
+ */
+BasicSourceMapConsumer.prototype.computeColumnSpans =
+  function SourceMapConsumer_computeColumnSpans() {
+    for (var index = 0; index < this._generatedMappings.length; ++index) {
+      var mapping = this._generatedMappings[index];
+
+      // Mappings do not contain a field for the last generated columnt. We
+      // can come up with an optimistic estimate, however, by assuming that
+      // mappings are contiguous (i.e. given two consecutive mappings, the
+      // first mapping ends where the second one starts).
+      if (index + 1 < this._generatedMappings.length) {
+        var nextMapping = this._generatedMappings[index + 1];
+
+        if (mapping.generatedLine === nextMapping.generatedLine) {
+          mapping.lastGeneratedColumn = nextMapping.generatedColumn - 1;
+          continue;
+        }
+      }
+
+      // The last mapping for each line spans the entire line.
+      mapping.lastGeneratedColumn = Infinity;
+    }
+  };
+
+/**
+ * Returns the original source, line, and column information for the generated
+ * source's line and column positions provided. The only argument is an object
+ * with the following properties:
+ *
+ *   - line: The line number in the generated source.
+ *   - column: The column number in the generated source.
+ *   - bias: Either 'SourceMapConsumer.GREATEST_LOWER_BOUND' or
+ *     'SourceMapConsumer.LEAST_UPPER_BOUND'. Specifies whether to return the
+ *     closest element that is smaller than or greater than the one we are
+ *     searching for, respectively, if the exact element cannot be found.
+ *     Defaults to 'SourceMapConsumer.GREATEST_LOWER_BOUND'.
+ *
+ * and an object is returned with the following properties:
+ *
+ *   - source: The original source file, or null.
+ *   - line: The line number in the original source, or null.
+ *   - column: The column number in the original source, or null.
+ *   - name: The original identifier, or null.
+ */
+BasicSourceMapConsumer.prototype.originalPositionFor =
+  function SourceMapConsumer_originalPositionFor(aArgs) {
+    var needle = {
+      generatedLine: util.getArg(aArgs, 'line'),
+      generatedColumn: util.getArg(aArgs, 'column')
+    };
+
+    var index = this._findMapping(
+      needle,
+      this._generatedMappings,
+      "generatedLine",
+      "generatedColumn",
+      util.compareByGeneratedPositionsDeflated,
+      util.getArg(aArgs, 'bias', SourceMapConsumer.GREATEST_LOWER_BOUND)
+    );
+
+    if (index >= 0) {
+      var mapping = this._generatedMappings[index];
+
+      if (mapping.generatedLine === needle.generatedLine) {
+        var source = util.getArg(mapping, 'source', null);
+        if (source !== null) {
+          source = this._sources.at(source);
+          if (this.sourceRoot != null) {
+            source = util.join(this.sourceRoot, source);
+          }
+        }
+        var name = util.getArg(mapping, 'name', null);
+        if (name !== null) {
+          name = this._names.at(name);
+        }
+        return {
+          source: source,
+          line: util.getArg(mapping, 'originalLine', null),
+          column: util.getArg(mapping, 'originalColumn', null),
+          name: name
+        };
+      }
+    }
+
+    return {
+      source: null,
+      line: null,
+      column: null,
+      name: null
+    };
+  };
+
+/**
+ * Return true if we have the source content for every source in the source
+ * map, false otherwise.
+ */
+BasicSourceMapConsumer.prototype.hasContentsOfAllSources =
+  function BasicSourceMapConsumer_hasContentsOfAllSources() {
+    if (!this.sourcesContent) {
+      return false;
+    }
+    return this.sourcesContent.length >= this._sources.size() &&
+      !this.sourcesContent.some(function (sc) { return sc == null; });
+  };
+
+/**
+ * Returns the original source content. The only argument is the url of the
+ * original source file. Returns null if no original source content is
+ * available.
+ */
+BasicSourceMapConsumer.prototype.sourceContentFor =
+  function SourceMapConsumer_sourceContentFor(aSource, nullOnMissing) {
+    if (!this.sourcesContent) {
+      return null;
+    }
+
+    if (this.sourceRoot != null) {
+      aSource = util.relative(this.sourceRoot, aSource);
+    }
+
+    if (this._sources.has(aSource)) {
+      return this.sourcesContent[this._sources.indexOf(aSource)];
+    }
+
+    var url;
+    if (this.sourceRoot != null
+        && (url = util.urlParse(this.sourceRoot))) {
+      // XXX: file:// URIs and absolute paths lead to unexpected behavior for
+      // many users. We can help them out when they expect file:// URIs to
+      // behave like it would if they were running a local HTTP server. See
+      // https://bugzilla.mozilla.org/show_bug.cgi?id=885597.
+      var fileUriAbsPath = aSource.replace(/^file:\/\//, "");
+      if (url.scheme == "file"
+          && this._sources.has(fileUriAbsPath)) {
+        return this.sourcesContent[this._sources.indexOf(fileUriAbsPath)]
+      }
+
+      if ((!url.path || url.path == "/")
+          && this._sources.has("/" + aSource)) {
+        return this.sourcesContent[this._sources.indexOf("/" + aSource)];
+      }
+    }
+
+    // This function is used recursively from
+    // IndexedSourceMapConsumer.prototype.sourceContentFor. In that case, we
+    // don't want to throw if we can't find the source - we just want to
+    // return null, so we provide a flag to exit gracefully.
+    if (nullOnMissing) {
+      return null;
+    }
+    else {
+      throw new Error('"' + aSource + '" is not in the SourceMap.');
+    }
+  };
+
+/**
+ * Returns the generated line and column information for the original source,
+ * line, and column positions provided. The only argument is an object with
+ * the following properties:
+ *
+ *   - source: The filename of the original source.
+ *   - line: The line number in the original source.
+ *   - column: The column number in the original source.
+ *   - bias: Either 'SourceMapConsumer.GREATEST_LOWER_BOUND' or
+ *     'SourceMapConsumer.LEAST_UPPER_BOUND'. Specifies whether to return the
+ *     closest element that is smaller than or greater than the one we are
+ *     searching for, respectively, if the exact element cannot be found.
+ *     Defaults to 'SourceMapConsumer.GREATEST_LOWER_BOUND'.
+ *
+ * and an object is returned with the following properties:
+ *
+ *   - line: The line number in the generated source, or null.
+ *   - column: The column number in the generated source, or null.
+ */
+BasicSourceMapConsumer.prototype.generatedPositionFor =
+  function SourceMapConsumer_generatedPositionFor(aArgs) {
+    var source = util.getArg(aArgs, 'source');
+    if (this.sourceRoot != null) {
+      source = util.relative(this.sourceRoot, source);
+    }
+    if (!this._sources.has(source)) {
+      return {
+        line: null,
+        column: null,
+        lastColumn: null
+      };
+    }
+    source = this._sources.indexOf(source);
+
+    var needle = {
+      source: source,
+      originalLine: util.getArg(aArgs, 'line'),
+      originalColumn: util.getArg(aArgs, 'column')
+    };
+
+    var index = this._findMapping(
+      needle,
+      this._originalMappings,
+      "originalLine",
+      "originalColumn",
+      util.compareByOriginalPositions,
+      util.getArg(aArgs, 'bias', SourceMapConsumer.GREATEST_LOWER_BOUND)
+    );
+
+    if (index >= 0) {
+      var mapping = this._originalMappings[index];
+
+      if (mapping.source === needle.source) {
+        return {
+          line: util.getArg(mapping, 'generatedLine', null),
+          column: util.getArg(mapping, 'generatedColumn', null),
+          lastColumn: util.getArg(mapping, 'lastGeneratedColumn', null)
+        };
+      }
+    }
+
+    return {
+      line: null,
+      column: null,
+      lastColumn: null
+    };
+  };
+
+exports.BasicSourceMapConsumer = BasicSourceMapConsumer;
+
+/**
+ * An IndexedSourceMapConsumer instance represents a parsed source map which
+ * we can query for information. It differs from BasicSourceMapConsumer in
+ * that it takes "indexed" source maps (i.e. ones with a "sections" field) as
+ * input.
+ *
+ * The only parameter is a raw source map (either as a JSON string, or already
+ * parsed to an object). According to the spec for indexed source maps, they
+ * have the following attributes:
+ *
+ *   - version: Which version of the source map spec this map is following.
+ *   - file: Optional. The generated file this source map is associated with.
+ *   - sections: A list of section definitions.
+ *
+ * Each value under the "sections" field has two fields:
+ *   - offset: The offset into the original specified at which this section
+ *       begins to apply, defined as an object with a "line" and "column"
+ *       field.
+ *   - map: A source map definition. This source map could also be indexed,
+ *       but doesn't have to be.
+ *
+ * Instead of the "map" field, it's also possible to have a "url" field
+ * specifying a URL to retrieve a source map from, but that's currently
+ * unsupported.
+ *
+ * Here's an example source map, taken from the source map spec[0], but
+ * modified to omit a section which uses the "url" field.
+ *
+ *  {
+ *    version : 3,
+ *    file: "app.js",
+ *    sections: [{
+ *      offset: {line:100, column:10},
+ *      map: {
+ *        version : 3,
+ *        file: "section.js",
+ *        sources: ["foo.js", "bar.js"],
+ *        names: ["src", "maps", "are", "fun"],
+ *        mappings: "AAAA,E;;ABCDE;"
+ *      }
+ *    }],
+ *  }
+ *
+ * [0]: https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit#heading=h.535es3xeprgt
+ */
+function IndexedSourceMapConsumer(aSourceMap) {
+  var sourceMap = aSourceMap;
+  if (typeof aSourceMap === 'string') {
+    sourceMap = JSON.parse(aSourceMap.replace(/^\)\]\}'/, ''));
+  }
+
+  var version = util.getArg(sourceMap, 'version');
+  var sections = util.getArg(sourceMap, 'sections');
+
+  if (version != this._version) {
+    throw new Error('Unsupported version: ' + version);
+  }
+
+  this._sources = new ArraySet();
+  this._names = new ArraySet();
+
+  var lastOffset = {
+    line: -1,
+    column: 0
+  };
+  this._sections = sections.map(function (s) {
+    if (s.url) {
+      // The url field will require support for asynchronicity.
+      // See https://github.com/mozilla/source-map/issues/16
+      throw new Error('Support for url field in sections not implemented.');
+    }
+    var offset = util.getArg(s, 'offset');
+    var offsetLine = util.getArg(offset, 'line');
+    var offsetColumn = util.getArg(offset, 'column');
+
+    if (offsetLine < lastOffset.line ||
+        (offsetLine === lastOffset.line && offsetColumn < lastOffset.column)) {
+      throw new Error('Section offsets must be ordered and non-overlapping.');
+    }
+    lastOffset = offset;
+
+    return {
+      generatedOffset: {
+        // The offset fields are 0-based, but we use 1-based indices when
+        // encoding/decoding from VLQ.
+        generatedLine: offsetLine + 1,
+        generatedColumn: offsetColumn + 1
+      },
+      consumer: new SourceMapConsumer(util.getArg(s, 'map'))
+    }
+  });
+}
+
+IndexedSourceMapConsumer.prototype = Object.create(SourceMapConsumer.prototype);
+IndexedSourceMapConsumer.prototype.constructor = SourceMapConsumer;
+
+/**
+ * The version of the source mapping spec that we are consuming.
+ */
+IndexedSourceMapConsumer.prototype._version = 3;
+
+/**
+ * The list of original sources.
+ */
+Object.defineProperty(IndexedSourceMapConsumer.prototype, 'sources', {
+  get: function () {
+    var sources = [];
+    for (var i = 0; i < this._sections.length; i++) {
+      for (var j = 0; j < this._sections[i].consumer.sources.length; j++) {
+        sources.push(this._sections[i].consumer.sources[j]);
+      }
+    }
+    return sources;
+  }
+});
+
+/**
+ * Returns the original source, line, and column information for the generated
+ * source's line and column positions provided. The only argument is an object
+ * with the following properties:
+ *
+ *   - line: The line number in the generated source.
+ *   - column: The column number in the generated source.
+ *
+ * and an object is returned with the following properties:
+ *
+ *   - source: The original source file, or null.
+ *   - line: The line number in the original source, or null.
+ *   - column: The column number in the original source, or null.
+ *   - name: The original identifier, or null.
+ */
+IndexedSourceMapConsumer.prototype.originalPositionFor =
+  function IndexedSourceMapConsumer_originalPositionFor(aArgs) {
+    var needle = {
+      generatedLine: util.getArg(aArgs, 'line'),
+      generatedColumn: util.getArg(aArgs, 'column')
+    };
+
+    // Find the section containing the generated position we're trying to map
+    // to an original position.
+    var sectionIndex = binarySearch.search(needle, this._sections,
+      function(needle, section) {
+        var cmp = needle.generatedLine - section.generatedOffset.generatedLine;
+        if (cmp) {
+          return cmp;
+        }
+
+        return (needle.generatedColumn -
+                section.generatedOffset.generatedColumn);
+      });
+    var section = this._sections[sectionIndex];
+
+    if (!section) {
+      return {
+        source: null,
+        line: null,
+        column: null,
+        name: null
+      };
+    }
+
+    return section.consumer.originalPositionFor({
+      line: needle.generatedLine -
+        (section.generatedOffset.generatedLine - 1),
+      column: needle.generatedColumn -
+        (section.generatedOffset.generatedLine === needle.generatedLine
+         ? section.generatedOffset.generatedColumn - 1
+         : 0),
+      bias: aArgs.bias
+    });
+  };
+
+/**
+ * Return true if we have the source content for every source in the source
+ * map, false otherwise.
+ */
+IndexedSourceMapConsumer.prototype.hasContentsOfAllSources =
+  function IndexedSourceMapConsumer_hasContentsOfAllSources() {
+    return this._sections.every(function (s) {
+      return s.consumer.hasContentsOfAllSources();
+    });
+  };
+
+/**
+ * Returns the original source content. The only argument is the url of the
+ * original source file. Returns null if no original source content is
+ * available.
+ */
+IndexedSourceMapConsumer.prototype.sourceContentFor =
+  function IndexedSourceMapConsumer_sourceContentFor(aSource, nullOnMissing) {
+    for (var i = 0; i < this._sections.length; i++) {
+      var section = this._sections[i];
+
+      var content = section.consumer.sourceContentFor(aSource, true);
+      if (content) {
+        return content;
+      }
+    }
+    if (nullOnMissing) {
+      return null;
+    }
+    else {
+      throw new Error('"' + aSource + '" is not in the SourceMap.');
+    }
+  };
+
+/**
+ * Returns the generated line and column information for the original source,
+ * line, and column positions provided. The only argument is an object with
+ * the following properties:
+ *
+ *   - source: The filename of the original source.
+ *   - line: The line number in the original source.
+ *   - column: The column number in the original source.
+ *
+ * and an object is returned with the following properties:
+ *
+ *   - line: The line number in the generated source, or null.
+ *   - column: The column number in the generated source, or null.
+ */
+IndexedSourceMapConsumer.prototype.generatedPositionFor =
+  function IndexedSourceMapConsumer_generatedPositionFor(aArgs) {
+    for (var i = 0; i < this._sections.length; i++) {
+      var section = this._sections[i];
+
+      // Only consider this section if the requested source is in the list of
+      // sources of the consumer.
+      if (section.consumer.sources.indexOf(util.getArg(aArgs, 'source')) === -1) {
+        continue;
+      }
+      var generatedPosition = section.consumer.generatedPositionFor(aArgs);
+      if (generatedPosition) {
+        var ret = {
+          line: generatedPosition.line +
+            (section.generatedOffset.generatedLine - 1),
+          column: generatedPosition.column +
+            (section.generatedOffset.generatedLine === generatedPosition.line
+             ? section.generatedOffset.generatedColumn - 1
+             : 0)
+        };
+        return ret;
+      }
+    }
+
+    return {
+      line: null,
+      column: null
+    };
+  };
+
+/**
+ * Parse the mappings in a string in to a data structure which we can easily
+ * query (the ordered arrays in the `this.__generatedMappings` and
+ * `this.__originalMappings` properties).
+ */
+IndexedSourceMapConsumer.prototype._parseMappings =
+  function IndexedSourceMapConsumer_parseMappings(aStr, aSourceRoot) {
+    this.__generatedMappings = [];
+    this.__originalMappings = [];
+    for (var i = 0; i < this._sections.length; i++) {
+      var section = this._sections[i];
+      var sectionMappings = section.consumer._generatedMappings;
+      for (var j = 0; j < sectionMappings.length; j++) {
+        var mapping = sectionMappings[j];
+
+        var source = section.consumer._sources.at(mapping.source);
+        if (section.consumer.sourceRoot !== null) {
+          source = util.join(section.consumer.sourceRoot, source);
+        }
+        this._sources.add(source);
+        source = this._sources.indexOf(source);
+
+        var name = section.consumer._names.at(mapping.name);
+        this._names.add(name);
+        name = this._names.indexOf(name);
+
+        // The mappings coming from the consumer for the section have
+        // generated positions relative to the start of the section, so we
+        // need to offset them to be relative to the start of the concatenated
+        // generated file.
+        var adjustedMapping = {
+          source: source,
+          generatedLine: mapping.generatedLine +
+            (section.generatedOffset.generatedLine - 1),
+          generatedColumn: mapping.generatedColumn +
+            (section.generatedOffset.generatedLine === mapping.generatedLine
+            ? section.generatedOffset.generatedColumn - 1
+            : 0),
+          originalLine: mapping.originalLine,
+          originalColumn: mapping.originalColumn,
+          name: name
+        };
+
+        this.__generatedMappings.push(adjustedMapping);
+        if (typeof adjustedMapping.originalLine === 'number') {
+          this.__originalMappings.push(adjustedMapping);
+        }
+      }
+    }
+
+    quickSort(this.__generatedMappings, util.compareByGeneratedPositionsDeflated);
+    quickSort(this.__originalMappings, util.compareByOriginalPositions);
+  };
+
+exports.IndexedSourceMapConsumer = IndexedSourceMapConsumer;
+
+},{"./array-set":2,"./base64-vlq":3,"./binary-search":5,"./quick-sort":7,"./util":11}],9:[function(require,module,exports){
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+
+var base64VLQ = require('./base64-vlq');
+var util = require('./util');
+var ArraySet = require('./array-set').ArraySet;
+var MappingList = require('./mapping-list').MappingList;
+
+/**
+ * An instance of the SourceMapGenerator represents a source map which is
+ * being built incrementally. You may pass an object with the following
+ * properties:
+ *
+ *   - file: The filename of the generated source.
+ *   - sourceRoot: A root for all relative URLs in this source map.
+ */
+function SourceMapGenerator(aArgs) {
+  if (!aArgs) {
+    aArgs = {};
+  }
+  this._file = util.getArg(aArgs, 'file', null);
+  this._sourceRoot = util.getArg(aArgs, 'sourceRoot', null);
+  this._skipValidation = util.getArg(aArgs, 'skipValidation', false);
+  this._sources = new ArraySet();
+  this._names = new ArraySet();
+  this._mappings = new MappingList();
+  this._sourcesContents = null;
+}
+
+SourceMapGenerator.prototype._version = 3;
+
+/**
+ * Creates a new SourceMapGenerator based on a SourceMapConsumer
+ *
+ * @param aSourceMapConsumer The SourceMap.
+ */
+SourceMapGenerator.fromSourceMap =
+  function SourceMapGenerator_fromSourceMap(aSourceMapConsumer) {
+    var sourceRoot = aSourceMapConsumer.sourceRoot;
+    var generator = new SourceMapGenerator({
+      file: aSourceMapConsumer.file,
+      sourceRoot: sourceRoot
+    });
+    aSourceMapConsumer.eachMapping(function (mapping) {
+      var newMapping = {
+        generated: {
+          line: mapping.generatedLine,
+          column: mapping.generatedColumn
+        }
+      };
+
+      if (mapping.source != null) {
+        newMapping.source = mapping.source;
+        if (sourceRoot != null) {
+          newMapping.source = util.relative(sourceRoot, newMapping.source);
+        }
+
+        newMapping.original = {
+          line: mapping.originalLine,
+          column: mapping.originalColumn
+        };
+
+        if (mapping.name != null) {
+          newMapping.name = mapping.name;
+        }
+      }
+
+      generator.addMapping(newMapping);
+    });
+    aSourceMapConsumer.sources.forEach(function (sourceFile) {
+      var content = aSourceMapConsumer.sourceContentFor(sourceFile);
+      if (content != null) {
+        generator.setSourceContent(sourceFile, content);
+      }
+    });
+    return generator;
+  };
+
+/**
+ * Add a single mapping from original source line and column to the generated
+ * source's line and column for this source map being created. The mapping
+ * object should have the following properties:
+ *
+ *   - generated: An object with the generated line and column positions.
+ *   - original: An object with the original line and column positions.
+ *   - source: The original source file (relative to the sourceRoot).
+ *   - name: An optional original token name for this mapping.
+ */
+SourceMapGenerator.prototype.addMapping =
+  function SourceMapGenerator_addMapping(aArgs) {
+    var generated = util.getArg(aArgs, 'generated');
+    var original = util.getArg(aArgs, 'original', null);
+    var source = util.getArg(aArgs, 'source', null);
+    var name = util.getArg(aArgs, 'name', null);
+
+    if (!this._skipValidation) {
+      this._validateMapping(generated, original, source, name);
+    }
+
+    if (source != null) {
+      source = String(source);
+      if (!this._sources.has(source)) {
+        this._sources.add(source);
+      }
+    }
+
+    if (name != null) {
+      name = String(name);
+      if (!this._names.has(name)) {
+        this._names.add(name);
+      }
+    }
+
+    this._mappings.add({
+      generatedLine: generated.line,
+      generatedColumn: generated.column,
+      originalLine: original != null && original.line,
+      originalColumn: original != null && original.column,
+      source: source,
+      name: name
+    });
+  };
+
+/**
+ * Set the source content for a source file.
+ */
+SourceMapGenerator.prototype.setSourceContent =
+  function SourceMapGenerator_setSourceContent(aSourceFile, aSourceContent) {
+    var source = aSourceFile;
+    if (this._sourceRoot != null) {
+      source = util.relative(this._sourceRoot, source);
+    }
+
+    if (aSourceContent != null) {
+      // Add the source content to the _sourcesContents map.
+      // Create a new _sourcesContents map if the property is null.
+      if (!this._sourcesContents) {
+        this._sourcesContents = Object.create(null);
+      }
+      this._sourcesContents[util.toSetString(source)] = aSourceContent;
+    } else if (this._sourcesContents) {
+      // Remove the source file from the _sourcesContents map.
+      // If the _sourcesContents map is empty, set the property to null.
+      delete this._sourcesContents[util.toSetString(source)];
+      if (Object.keys(this._sourcesContents).length === 0) {
+        this._sourcesContents = null;
+      }
+    }
+  };
+
+/**
+ * Applies the mappings of a sub-source-map for a specific source file to the
+ * source map being generated. Each mapping to the supplied source file is
+ * rewritten using the supplied source map. Note: The resolution for the
+ * resulting mappings is the minimium of this map and the supplied map.
+ *
+ * @param aSourceMapConsumer The source map to be applied.
+ * @param aSourceFile Optional. The filename of the source file.
+ *        If omitted, SourceMapConsumer's file property will be used.
+ * @param aSourceMapPath Optional. The dirname of the path to the source map
+ *        to be applied. If relative, it is relative to the SourceMapConsumer.
+ *        This parameter is needed when the two source maps aren't in the same
+ *        directory, and the source map to be applied contains relative source
+ *        paths. If so, those relative source paths need to be rewritten
+ *        relative to the SourceMapGenerator.
+ */
+SourceMapGenerator.prototype.applySourceMap =
+  function SourceMapGenerator_applySourceMap(aSourceMapConsumer, aSourceFile, aSourceMapPath) {
+    var sourceFile = aSourceFile;
+    // If aSourceFile is omitted, we will use the file property of the SourceMap
+    if (aSourceFile == null) {
+      if (aSourceMapConsumer.file == null) {
+        throw new Error(
+          'SourceMapGenerator.prototype.applySourceMap requires either an explicit source file, ' +
+          'or the source map\'s "file" property. Both were omitted.'
+        );
+      }
+      sourceFile = aSourceMapConsumer.file;
+    }
+    var sourceRoot = this._sourceRoot;
+    // Make "sourceFile" relative if an absolute Url is passed.
+    if (sourceRoot != null) {
+      sourceFile = util.relative(sourceRoot, sourceFile);
+    }
+    // Applying the SourceMap can add and remove items from the sources and
+    // the names array.
+    var newSources = new ArraySet();
+    var newNames = new ArraySet();
+
+    // Find mappings for the "sourceFile"
+    this._mappings.unsortedForEach(function (mapping) {
+      if (mapping.source === sourceFile && mapping.originalLine != null) {
+        // Check if it can be mapped by the source map, then update the mapping.
+        var original = aSourceMapConsumer.originalPositionFor({
+          line: mapping.originalLine,
+          column: mapping.originalColumn
+        });
+        if (original.source != null) {
+          // Copy mapping
+          mapping.source = original.source;
+          if (aSourceMapPath != null) {
+            mapping.source = util.join(aSourceMapPath, mapping.source)
+          }
+          if (sourceRoot != null) {
+            mapping.source = util.relative(sourceRoot, mapping.source);
+          }
+          mapping.originalLine = original.line;
+          mapping.originalColumn = original.column;
+          if (original.name != null) {
+            mapping.name = original.name;
+          }
+        }
+      }
+
+      var source = mapping.source;
+      if (source != null && !newSources.has(source)) {
+        newSources.add(source);
+      }
+
+      var name = mapping.name;
+      if (name != null && !newNames.has(name)) {
+        newNames.add(name);
+      }
+
+    }, this);
+    this._sources = newSources;
+    this._names = newNames;
+
+    // Copy sourcesContents of applied map.
+    aSourceMapConsumer.sources.forEach(function (sourceFile) {
+      var content = aSourceMapConsumer.sourceContentFor(sourceFile);
+      if (content != null) {
+        if (aSourceMapPath != null) {
+          sourceFile = util.join(aSourceMapPath, sourceFile);
+        }
+        if (sourceRoot != null) {
+          sourceFile = util.relative(sourceRoot, sourceFile);
+        }
+        this.setSourceContent(sourceFile, content);
+      }
+    }, this);
+  };
+
+/**
+ * A mapping can have one of the three levels of data:
+ *
+ *   1. Just the generated position.
+ *   2. The Generated position, original position, and original source.
+ *   3. Generated and original position, original source, as well as a name
+ *      token.
+ *
+ * To maintain consistency, we validate that any new mapping being added falls
+ * in to one of these categories.
+ */
+SourceMapGenerator.prototype._validateMapping =
+  function SourceMapGenerator_validateMapping(aGenerated, aOriginal, aSource,
+                                              aName) {
+    // When aOriginal is truthy but has empty values for .line and .column,
+    // it is most likely a programmer error. In this case we throw a very
+    // specific error message to try to guide them the right way.
+    // For example: https://github.com/Polymer/polymer-bundler/pull/519
+    if (aOriginal && typeof aOriginal.line !== 'number' && typeof aOriginal.column !== 'number') {
+        throw new Error(
+            'original.line and original.column are not numbers -- you probably meant to omit ' +
+            'the original mapping entirely and only map the generated position. If so, pass ' +
+            'null for the original mapping instead of an object with empty or null values.'
+        );
+    }
+
+    if (aGenerated && 'line' in aGenerated && 'column' in aGenerated
+        && aGenerated.line > 0 && aGenerated.column >= 0
+        && !aOriginal && !aSource && !aName) {
+      // Case 1.
+      return;
+    }
+    else if (aGenerated && 'line' in aGenerated && 'column' in aGenerated
+             && aOriginal && 'line' in aOriginal && 'column' in aOriginal
+             && aGenerated.line > 0 && aGenerated.column >= 0
+             && aOriginal.line > 0 && aOriginal.column >= 0
+             && aSource) {
+      // Cases 2 and 3.
+      return;
+    }
+    else {
+      throw new Error('Invalid mapping: ' + JSON.stringify({
+        generated: aGenerated,
+        source: aSource,
+        original: aOriginal,
+        name: aName
+      }));
+    }
+  };
+
+/**
+ * Serialize the accumulated mappings in to the stream of base 64 VLQs
+ * specified by the source map format.
+ */
+SourceMapGenerator.prototype._serializeMappings =
+  function SourceMapGenerator_serializeMappings() {
+    var previousGeneratedColumn = 0;
+    var previousGeneratedLine = 1;
+    var previousOriginalColumn = 0;
+    var previousOriginalLine = 0;
+    var previousName = 0;
+    var previousSource = 0;
+    var result = '';
+    var next;
+    var mapping;
+    var nameIdx;
+    var sourceIdx;
+
+    var mappings = this._mappings.toArray();
+    for (var i = 0, len = mappings.length; i < len; i++) {
+      mapping = mappings[i];
+      next = ''
+
+      if (mapping.generatedLine !== previousGeneratedLine) {
+        previousGeneratedColumn = 0;
+        while (mapping.generatedLine !== previousGeneratedLine) {
+          next += ';';
+          previousGeneratedLine++;
+        }
+      }
+      else {
+        if (i > 0) {
+          if (!util.compareByGeneratedPositionsInflated(mapping, mappings[i - 1])) {
+            continue;
+          }
+          next += ',';
+        }
+      }
+
+      next += base64VLQ.encode(mapping.generatedColumn
+                                 - previousGeneratedColumn);
+      previousGeneratedColumn = mapping.generatedColumn;
+
+      if (mapping.source != null) {
+        sourceIdx = this._sources.indexOf(mapping.source);
+        next += base64VLQ.encode(sourceIdx - previousSource);
+        previousSource = sourceIdx;
+
+        // lines are stored 0-based in SourceMap spec version 3
+        next += base64VLQ.encode(mapping.originalLine - 1
+                                   - previousOriginalLine);
+        previousOriginalLine = mapping.originalLine - 1;
+
+        next += base64VLQ.encode(mapping.originalColumn
+                                   - previousOriginalColumn);
+        previousOriginalColumn = mapping.originalColumn;
+
+        if (mapping.name != null) {
+          nameIdx = this._names.indexOf(mapping.name);
+          next += base64VLQ.encode(nameIdx - previousName);
+          previousName = nameIdx;
+        }
+      }
+
+      result += next;
+    }
+
+    return result;
+  };
+
+SourceMapGenerator.prototype._generateSourcesContent =
+  function SourceMapGenerator_generateSourcesContent(aSources, aSourceRoot) {
+    return aSources.map(function (source) {
+      if (!this._sourcesContents) {
+        return null;
+      }
+      if (aSourceRoot != null) {
+        source = util.relative(aSourceRoot, source);
+      }
+      var key = util.toSetString(source);
+      return Object.prototype.hasOwnProperty.call(this._sourcesContents, key)
+        ? this._sourcesContents[key]
+        : null;
+    }, this);
+  };
+
+/**
+ * Externalize the source map.
+ */
+SourceMapGenerator.prototype.toJSON =
+  function SourceMapGenerator_toJSON() {
+    var map = {
+      version: this._version,
+      sources: this._sources.toArray(),
+      names: this._names.toArray(),
+      mappings: this._serializeMappings()
+    };
+    if (this._file != null) {
+      map.file = this._file;
+    }
+    if (this._sourceRoot != null) {
+      map.sourceRoot = this._sourceRoot;
+    }
+    if (this._sourcesContents) {
+      map.sourcesContent = this._generateSourcesContent(map.sources, map.sourceRoot);
+    }
+
+    return map;
+  };
+
+/**
+ * Render the source map being generated to a string.
+ */
+SourceMapGenerator.prototype.toString =
+  function SourceMapGenerator_toString() {
+    return JSON.stringify(this.toJSON());
+  };
+
+exports.SourceMapGenerator = SourceMapGenerator;
+
+},{"./array-set":2,"./base64-vlq":3,"./mapping-list":6,"./util":11}],10:[function(require,module,exports){
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+
+var SourceMapGenerator = require('./source-map-generator').SourceMapGenerator;
+var util = require('./util');
+
+// Matches a Windows-style `\r\n` newline or a `\n` newline used by all other
+// operating systems these days (capturing the result).
+var REGEX_NEWLINE = /(\r?\n)/;
+
+// Newline character code for charCodeAt() comparisons
+var NEWLINE_CODE = 10;
+
+// Private symbol for identifying `SourceNode`s when multiple versions of
+// the source-map library are loaded. This MUST NOT CHANGE across
+// versions!
+var isSourceNode = "$$$isSourceNode$$$";
+
+/**
+ * SourceNodes provide a way to abstract over interpolating/concatenating
+ * snippets of generated JavaScript source code while maintaining the line and
+ * column information associated with the original source code.
+ *
+ * @param aLine The original line number.
+ * @param aColumn The original column number.
+ * @param aSource The original source's filename.
+ * @param aChunks Optional. An array of strings which are snippets of
+ *        generated JS, or other SourceNodes.
+ * @param aName The original identifier.
+ */
+function SourceNode(aLine, aColumn, aSource, aChunks, aName) {
+  this.children = [];
+  this.sourceContents = {};
+  this.line = aLine == null ? null : aLine;
+  this.column = aColumn == null ? null : aColumn;
+  this.source = aSource == null ? null : aSource;
+  this.name = aName == null ? null : aName;
+  this[isSourceNode] = true;
+  if (aChunks != null) this.add(aChunks);
+}
+
+/**
+ * Creates a SourceNode from generated code and a SourceMapConsumer.
+ *
+ * @param aGeneratedCode The generated code
+ * @param aSourceMapConsumer The SourceMap for the generated code
+ * @param aRelativePath Optional. The path that relative sources in the
+ *        SourceMapConsumer should be relative to.
+ */
+SourceNode.fromStringWithSourceMap =
+  function SourceNode_fromStringWithSourceMap(aGeneratedCode, aSourceMapConsumer, aRelativePath) {
+    // The SourceNode we want to fill with the generated code
+    // and the SourceMap
+    var node = new SourceNode();
+
+    // All even indices of this array are one line of the generated code,
+    // while all odd indices are the newlines between two adjacent lines
+    // (since `REGEX_NEWLINE` captures its match).
+    // Processed fragments are accessed by calling `shiftNextLine`.
+    var remainingLines = aGeneratedCode.split(REGEX_NEWLINE);
+    var remainingLinesIndex = 0;
+    var shiftNextLine = function() {
+      var lineContents = getNextLine();
+      // The last line of a file might not have a newline.
+      var newLine = getNextLine() || "";
+      return lineContents + newLine;
+
+      function getNextLine() {
+        return remainingLinesIndex < remainingLines.length ?
+            remainingLines[remainingLinesIndex++] : undefined;
+      }
+    };
+
+    // We need to remember the position of "remainingLines"
+    var lastGeneratedLine = 1, lastGeneratedColumn = 0;
+
+    // The generate SourceNodes we need a code range.
+    // To extract it current and last mapping is used.
+    // Here we store the last mapping.
+    var lastMapping = null;
+
+    aSourceMapConsumer.eachMapping(function (mapping) {
+      if (lastMapping !== null) {
+        // We add the code from "lastMapping" to "mapping":
+        // First check if there is a new line in between.
+        if (lastGeneratedLine < mapping.generatedLine) {
+          // Associate first line with "lastMapping"
+          addMappingWithCode(lastMapping, shiftNextLine());
+          lastGeneratedLine++;
+          lastGeneratedColumn = 0;
+          // The remaining code is added without mapping
+        } else {
+          // There is no new line in between.
+          // Associate the code between "lastGeneratedColumn" and
+          // "mapping.generatedColumn" with "lastMapping"
+          var nextLine = remainingLines[remainingLinesIndex];
+          var code = nextLine.substr(0, mapping.generatedColumn -
+                                        lastGeneratedColumn);
+          remainingLines[remainingLinesIndex] = nextLine.substr(mapping.generatedColumn -
+                                              lastGeneratedColumn);
+          lastGeneratedColumn = mapping.generatedColumn;
+          addMappingWithCode(lastMapping, code);
+          // No more remaining code, continue
+          lastMapping = mapping;
+          return;
+        }
+      }
+      // We add the generated code until the first mapping
+      // to the SourceNode without any mapping.
+      // Each line is added as separate string.
+      while (lastGeneratedLine < mapping.generatedLine) {
+        node.add(shiftNextLine());
+        lastGeneratedLine++;
+      }
+      if (lastGeneratedColumn < mapping.generatedColumn) {
+        var nextLine = remainingLines[remainingLinesIndex];
+        node.add(nextLine.substr(0, mapping.generatedColumn));
+        remainingLines[remainingLinesIndex] = nextLine.substr(mapping.generatedColumn);
+        lastGeneratedColumn = mapping.generatedColumn;
+      }
+      lastMapping = mapping;
+    }, this);
+    // We have processed all mappings.
+    if (remainingLinesIndex < remainingLines.length) {
+      if (lastMapping) {
+        // Associate the remaining code in the current line with "lastMapping"
+        addMappingWithCode(lastMapping, shiftNextLine());
+      }
+      // and add the remaining lines without any mapping
+      node.add(remainingLines.splice(remainingLinesIndex).join(""));
+    }
+
+    // Copy sourcesContent into SourceNode
+    aSourceMapConsumer.sources.forEach(function (sourceFile) {
+      var content = aSourceMapConsumer.sourceContentFor(sourceFile);
+      if (content != null) {
+        if (aRelativePath != null) {
+          sourceFile = util.join(aRelativePath, sourceFile);
+        }
+        node.setSourceContent(sourceFile, content);
+      }
+    });
+
+    return node;
+
+    function addMappingWithCode(mapping, code) {
+      if (mapping === null || mapping.source === undefined) {
+        node.add(code);
+      } else {
+        var source = aRelativePath
+          ? util.join(aRelativePath, mapping.source)
+          : mapping.source;
+        node.add(new SourceNode(mapping.originalLine,
+                                mapping.originalColumn,
+                                source,
+                                code,
+                                mapping.name));
+      }
+    }
+  };
+
+/**
+ * Add a chunk of generated JS to this source node.
+ *
+ * @param aChunk A string snippet of generated JS code, another instance of
+ *        SourceNode, or an array where each member is one of those things.
+ */
+SourceNode.prototype.add = function SourceNode_add(aChunk) {
+  if (Array.isArray(aChunk)) {
+    aChunk.forEach(function (chunk) {
+      this.add(chunk);
+    }, this);
+  }
+  else if (aChunk[isSourceNode] || typeof aChunk === "string") {
+    if (aChunk) {
+      this.children.push(aChunk);
+    }
+  }
+  else {
+    throw new TypeError(
+      "Expected a SourceNode, string, or an array of SourceNodes and strings. Got " + aChunk
+    );
+  }
+  return this;
+};
+
+/**
+ * Add a chunk of generated JS to the beginning of this source node.
+ *
+ * @param aChunk A string snippet of generated JS code, another instance of
+ *        SourceNode, or an array where each member is one of those things.
+ */
+SourceNode.prototype.prepend = function SourceNode_prepend(aChunk) {
+  if (Array.isArray(aChunk)) {
+    for (var i = aChunk.length-1; i >= 0; i--) {
+      this.prepend(aChunk[i]);
+    }
+  }
+  else if (aChunk[isSourceNode] || typeof aChunk === "string") {
+    this.children.unshift(aChunk);
+  }
+  else {
+    throw new TypeError(
+      "Expected a SourceNode, string, or an array of SourceNodes and strings. Got " + aChunk
+    );
+  }
+  return this;
+};
+
+/**
+ * Walk over the tree of JS snippets in this node and its children. The
+ * walking function is called once for each snippet of JS and is passed that
+ * snippet and the its original associated source's line/column location.
+ *
+ * @param aFn The traversal function.
+ */
+SourceNode.prototype.walk = function SourceNode_walk(aFn) {
+  var chunk;
+  for (var i = 0, len = this.children.length; i < len; i++) {
+    chunk = this.children[i];
+    if (chunk[isSourceNode]) {
+      chunk.walk(aFn);
+    }
+    else {
+      if (chunk !== '') {
+        aFn(chunk, { source: this.source,
+                     line: this.line,
+                     column: this.column,
+                     name: this.name });
+      }
+    }
+  }
+};
+
+/**
+ * Like `String.prototype.join` except for SourceNodes. Inserts `aStr` between
+ * each of `this.children`.
+ *
+ * @param aSep The separator.
+ */
+SourceNode.prototype.join = function SourceNode_join(aSep) {
+  var newChildren;
+  var i;
+  var len = this.children.length;
+  if (len > 0) {
+    newChildren = [];
+    for (i = 0; i < len-1; i++) {
+      newChildren.push(this.children[i]);
+      newChildren.push(aSep);
+    }
+    newChildren.push(this.children[i]);
+    this.children = newChildren;
+  }
+  return this;
+};
+
+/**
+ * Call String.prototype.replace on the very right-most source snippet. Useful
+ * for trimming whitespace from the end of a source node, etc.
+ *
+ * @param aPattern The pattern to replace.
+ * @param aReplacement The thing to replace the pattern with.
+ */
+SourceNode.prototype.replaceRight = function SourceNode_replaceRight(aPattern, aReplacement) {
+  var lastChild = this.children[this.children.length - 1];
+  if (lastChild[isSourceNode]) {
+    lastChild.replaceRight(aPattern, aReplacement);
+  }
+  else if (typeof lastChild === 'string') {
+    this.children[this.children.length - 1] = lastChild.replace(aPattern, aReplacement);
+  }
+  else {
+    this.children.push(''.replace(aPattern, aReplacement));
+  }
+  return this;
+};
+
+/**
+ * Set the source content for a source file. This will be added to the SourceMapGenerator
+ * in the sourcesContent field.
+ *
+ * @param aSourceFile The filename of the source file
+ * @param aSourceContent The content of the source file
+ */
+SourceNode.prototype.setSourceContent =
+  function SourceNode_setSourceContent(aSourceFile, aSourceContent) {
+    this.sourceContents[util.toSetString(aSourceFile)] = aSourceContent;
+  };
+
+/**
+ * Walk over the tree of SourceNodes. The walking function is called for each
+ * source file content and is passed the filename and source content.
+ *
+ * @param aFn The traversal function.
+ */
+SourceNode.prototype.walkSourceContents =
+  function SourceNode_walkSourceContents(aFn) {
+    for (var i = 0, len = this.children.length; i < len; i++) {
+      if (this.children[i][isSourceNode]) {
+        this.children[i].walkSourceContents(aFn);
+      }
+    }
+
+    var sources = Object.keys(this.sourceContents);
+    for (var i = 0, len = sources.length; i < len; i++) {
+      aFn(util.fromSetString(sources[i]), this.sourceContents[sources[i]]);
+    }
+  };
+
+/**
+ * Return the string representation of this source node. Walks over the tree
+ * and concatenates all the various snippets together to one string.
+ */
+SourceNode.prototype.toString = function SourceNode_toString() {
+  var str = "";
+  this.walk(function (chunk) {
+    str += chunk;
+  });
+  return str;
+};
+
+/**
+ * Returns the string representation of this source node along with a source
+ * map.
+ */
+SourceNode.prototype.toStringWithSourceMap = function SourceNode_toStringWithSourceMap(aArgs) {
+  var generated = {
+    code: "",
+    line: 1,
+    column: 0
+  };
+  var map = new SourceMapGenerator(aArgs);
+  var sourceMappingActive = false;
+  var lastOriginalSource = null;
+  var lastOriginalLine = null;
+  var lastOriginalColumn = null;
+  var lastOriginalName = null;
+  this.walk(function (chunk, original) {
+    generated.code += chunk;
+    if (original.source !== null
+        && original.line !== null
+        && original.column !== null) {
+      if(lastOriginalSource !== original.source
+         || lastOriginalLine !== original.line
+         || lastOriginalColumn !== original.column
+         || lastOriginalName !== original.name) {
+        map.addMapping({
+          source: original.source,
+          original: {
+            line: original.line,
+            column: original.column
+          },
+          generated: {
+            line: generated.line,
+            column: generated.column
+          },
+          name: original.name
+        });
+      }
+      lastOriginalSource = original.source;
+      lastOriginalLine = original.line;
+      lastOriginalColumn = original.column;
+      lastOriginalName = original.name;
+      sourceMappingActive = true;
+    } else if (sourceMappingActive) {
+      map.addMapping({
+        generated: {
+          line: generated.line,
+          column: generated.column
+        }
+      });
+      lastOriginalSource = null;
+      sourceMappingActive = false;
+    }
+    for (var idx = 0, length = chunk.length; idx < length; idx++) {
+      if (chunk.charCodeAt(idx) === NEWLINE_CODE) {
+        generated.line++;
+        generated.column = 0;
+        // Mappings end at eol
+        if (idx + 1 === length) {
+          lastOriginalSource = null;
+          sourceMappingActive = false;
+        } else if (sourceMappingActive) {
+          map.addMapping({
+            source: original.source,
+            original: {
+              line: original.line,
+              column: original.column
+            },
+            generated: {
+              line: generated.line,
+              column: generated.column
+            },
+            name: original.name
+          });
+        }
+      } else {
+        generated.column++;
+      }
+    }
+  });
+  this.walkSourceContents(function (sourceFile, sourceContent) {
+    map.setSourceContent(sourceFile, sourceContent);
+  });
+
+  return { code: generated.code, map: map };
+};
+
+exports.SourceNode = SourceNode;
+
+},{"./source-map-generator":9,"./util":11}],11:[function(require,module,exports){
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+
+/**
+ * This is a helper function for getting values from parameter/options
+ * objects.
+ *
+ * @param args The object we are extracting values from
+ * @param name The name of the property we are getting.
+ * @param defaultValue An optional value to return if the property is missing
+ * from the object. If this is not specified and the property is missing, an
+ * error will be thrown.
+ */
+function getArg(aArgs, aName, aDefaultValue) {
+  if (aName in aArgs) {
+    return aArgs[aName];
+  } else if (arguments.length === 3) {
+    return aDefaultValue;
+  } else {
+    throw new Error('"' + aName + '" is a required argument.');
+  }
+}
+exports.getArg = getArg;
+
+var urlRegexp = /^(?:([\w+\-.]+):)?\/\/(?:(\w+:\w+)@)?([\w.]*)(?::(\d+))?(\S*)$/;
+var dataUrlRegexp = /^data:.+\,.+$/;
+
+function urlParse(aUrl) {
+  var match = aUrl.match(urlRegexp);
+  if (!match) {
+    return null;
+  }
+  return {
+    scheme: match[1],
+    auth: match[2],
+    host: match[3],
+    port: match[4],
+    path: match[5]
+  };
+}
+exports.urlParse = urlParse;
+
+function urlGenerate(aParsedUrl) {
+  var url = '';
+  if (aParsedUrl.scheme) {
+    url += aParsedUrl.scheme + ':';
+  }
+  url += '//';
+  if (aParsedUrl.auth) {
+    url += aParsedUrl.auth + '@';
+  }
+  if (aParsedUrl.host) {
+    url += aParsedUrl.host;
+  }
+  if (aParsedUrl.port) {
+    url += ":" + aParsedUrl.port
+  }
+  if (aParsedUrl.path) {
+    url += aParsedUrl.path;
+  }
+  return url;
+}
+exports.urlGenerate = urlGenerate;
+
+/**
+ * Normalizes a path, or the path portion of a URL:
+ *
+ * - Replaces consecutive slashes with one slash.
+ * - Removes unnecessary '.' parts.
+ * - Removes unnecessary '<dir>/..' parts.
+ *
+ * Based on code in the Node.js 'path' core module.
+ *
+ * @param aPath The path or url to normalize.
+ */
+function normalize(aPath) {
+  var path = aPath;
+  var url = urlParse(aPath);
+  if (url) {
+    if (!url.path) {
+      return aPath;
+    }
+    path = url.path;
+  }
+  var isAbsolute = exports.isAbsolute(path);
+
+  var parts = path.split(/\/+/);
+  for (var part, up = 0, i = parts.length - 1; i >= 0; i--) {
+    part = parts[i];
+    if (part === '.') {
+      parts.splice(i, 1);
+    } else if (part === '..') {
+      up++;
+    } else if (up > 0) {
+      if (part === '') {
+        // The first part is blank if the path is absolute. Trying to go
+        // above the root is a no-op. Therefore we can remove all '..' parts
+        // directly after the root.
+        parts.splice(i + 1, up);
+        up = 0;
+      } else {
+        parts.splice(i, 2);
+        up--;
+      }
+    }
+  }
+  path = parts.join('/');
+
+  if (path === '') {
+    path = isAbsolute ? '/' : '.';
+  }
+
+  if (url) {
+    url.path = path;
+    return urlGenerate(url);
+  }
+  return path;
+}
+exports.normalize = normalize;
+
+/**
+ * Joins two paths/URLs.
+ *
+ * @param aRoot The root path or URL.
+ * @param aPath The path or URL to be joined with the root.
+ *
+ * - If aPath is a URL or a data URI, aPath is returned, unless aPath is a
+ *   scheme-relative URL: Then the scheme of aRoot, if any, is prepended
+ *   first.
+ * - Otherwise aPath is a path. If aRoot is a URL, then its path portion
+ *   is updated with the result and aRoot is returned. Otherwise the result
+ *   is returned.
+ *   - If aPath is absolute, the result is aPath.
+ *   - Otherwise the two paths are joined with a slash.
+ * - Joining for example 'http://' and 'www.example.com' is also supported.
+ */
+function join(aRoot, aPath) {
+  if (aRoot === "") {
+    aRoot = ".";
+  }
+  if (aPath === "") {
+    aPath = ".";
+  }
+  var aPathUrl = urlParse(aPath);
+  var aRootUrl = urlParse(aRoot);
+  if (aRootUrl) {
+    aRoot = aRootUrl.path || '/';
+  }
+
+  // `join(foo, '//www.example.org')`
+  if (aPathUrl && !aPathUrl.scheme) {
+    if (aRootUrl) {
+      aPathUrl.scheme = aRootUrl.scheme;
+    }
+    return urlGenerate(aPathUrl);
+  }
+
+  if (aPathUrl || aPath.match(dataUrlRegexp)) {
+    return aPath;
+  }
+
+  // `join('http://', 'www.example.com')`
+  if (aRootUrl && !aRootUrl.host && !aRootUrl.path) {
+    aRootUrl.host = aPath;
+    return urlGenerate(aRootUrl);
+  }
+
+  var joined = aPath.charAt(0) === '/'
+    ? aPath
+    : normalize(aRoot.replace(/\/+$/, '') + '/' + aPath);
+
+  if (aRootUrl) {
+    aRootUrl.path = joined;
+    return urlGenerate(aRootUrl);
+  }
+  return joined;
+}
+exports.join = join;
+
+exports.isAbsolute = function (aPath) {
+  return aPath.charAt(0) === '/' || !!aPath.match(urlRegexp);
+};
+
+/**
+ * Make a path relative to a URL or another path.
+ *
+ * @param aRoot The root path or URL.
+ * @param aPath The path or URL to be made relative to aRoot.
+ */
+function relative(aRoot, aPath) {
+  if (aRoot === "") {
+    aRoot = ".";
+  }
+
+  aRoot = aRoot.replace(/\/$/, '');
+
+  // It is possible for the path to be above the root. In this case, simply
+  // checking whether the root is a prefix of the path won't work. Instead, we
+  // need to remove components from the root one by one, until either we find
+  // a prefix that fits, or we run out of components to remove.
+  var level = 0;
+  while (aPath.indexOf(aRoot + '/') !== 0) {
+    var index = aRoot.lastIndexOf("/");
+    if (index < 0) {
+      return aPath;
+    }
+
+    // If the only part of the root that is left is the scheme (i.e. http://,
+    // file:///, etc.), one or more slashes (/), or simply nothing at all, we
+    // have exhausted all components, so the path is not relative to the root.
+    aRoot = aRoot.slice(0, index);
+    if (aRoot.match(/^([^\/]+:\/)?\/*$/)) {
+      return aPath;
+    }
+
+    ++level;
+  }
+
+  // Make sure we add a "../" for each component we removed from the root.
+  return Array(level + 1).join("../") + aPath.substr(aRoot.length + 1);
+}
+exports.relative = relative;
+
+var supportsNullProto = (function () {
+  var obj = Object.create(null);
+  return !('__proto__' in obj);
+}());
+
+function identity (s) {
+  return s;
+}
+
+/**
+ * Because behavior goes wacky when you set `__proto__` on objects, we
+ * have to prefix all the strings in our set with an arbitrary character.
+ *
+ * See https://github.com/mozilla/source-map/pull/31 and
+ * https://github.com/mozilla/source-map/issues/30
+ *
+ * @param String aStr
+ */
+function toSetString(aStr) {
+  if (isProtoString(aStr)) {
+    return '$' + aStr;
+  }
+
+  return aStr;
+}
+exports.toSetString = supportsNullProto ? identity : toSetString;
+
+function fromSetString(aStr) {
+  if (isProtoString(aStr)) {
+    return aStr.slice(1);
+  }
+
+  return aStr;
+}
+exports.fromSetString = supportsNullProto ? identity : fromSetString;
+
+function isProtoString(s) {
+  if (!s) {
+    return false;
+  }
+
+  var length = s.length;
+
+  if (length < 9 /* "__proto__".length */) {
+    return false;
+  }
+
+  if (s.charCodeAt(length - 1) !== 95  /* '_' */ ||
+      s.charCodeAt(length - 2) !== 95  /* '_' */ ||
+      s.charCodeAt(length - 3) !== 111 /* 'o' */ ||
+      s.charCodeAt(length - 4) !== 116 /* 't' */ ||
+      s.charCodeAt(length - 5) !== 111 /* 'o' */ ||
+      s.charCodeAt(length - 6) !== 114 /* 'r' */ ||
+      s.charCodeAt(length - 7) !== 112 /* 'p' */ ||
+      s.charCodeAt(length - 8) !== 95  /* '_' */ ||
+      s.charCodeAt(length - 9) !== 95  /* '_' */) {
+    return false;
+  }
+
+  for (var i = length - 10; i >= 0; i--) {
+    if (s.charCodeAt(i) !== 36 /* '$' */) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+/**
+ * Comparator between two mappings where the original positions are compared.
+ *
+ * Optionally pass in `true` as `onlyCompareGenerated` to consider two
+ * mappings with the same original source/line/column, but different generated
+ * line and column the same. Useful when searching for a mapping with a
+ * stubbed out mapping.
+ */
+function compareByOriginalPositions(mappingA, mappingB, onlyCompareOriginal) {
+  var cmp = mappingA.source - mappingB.source;
+  if (cmp !== 0) {
+    return cmp;
+  }
+
+  cmp = mappingA.originalLine - mappingB.originalLine;
+  if (cmp !== 0) {
+    return cmp;
+  }
+
+  cmp = mappingA.originalColumn - mappingB.originalColumn;
+  if (cmp !== 0 || onlyCompareOriginal) {
+    return cmp;
+  }
+
+  cmp = mappingA.generatedColumn - mappingB.generatedColumn;
+  if (cmp !== 0) {
+    return cmp;
+  }
+
+  cmp = mappingA.generatedLine - mappingB.generatedLine;
+  if (cmp !== 0) {
+    return cmp;
+  }
+
+  return mappingA.name - mappingB.name;
+}
+exports.compareByOriginalPositions = compareByOriginalPositions;
+
+/**
+ * Comparator between two mappings with deflated source and name indices where
+ * the generated positions are compared.
+ *
+ * Optionally pass in `true` as `onlyCompareGenerated` to consider two
+ * mappings with the same generated line and column, but different
+ * source/name/original line and column the same. Useful when searching for a
+ * mapping with a stubbed out mapping.
+ */
+function compareByGeneratedPositionsDeflated(mappingA, mappingB, onlyCompareGenerated) {
+  var cmp = mappingA.generatedLine - mappingB.generatedLine;
+  if (cmp !== 0) {
+    return cmp;
+  }
+
+  cmp = mappingA.generatedColumn - mappingB.generatedColumn;
+  if (cmp !== 0 || onlyCompareGenerated) {
+    return cmp;
+  }
+
+  cmp = mappingA.source - mappingB.source;
+  if (cmp !== 0) {
+    return cmp;
+  }
+
+  cmp = mappingA.originalLine - mappingB.originalLine;
+  if (cmp !== 0) {
+    return cmp;
+  }
+
+  cmp = mappingA.originalColumn - mappingB.originalColumn;
+  if (cmp !== 0) {
+    return cmp;
+  }
+
+  return mappingA.name - mappingB.name;
+}
+exports.compareByGeneratedPositionsDeflated = compareByGeneratedPositionsDeflated;
+
+function strcmp(aStr1, aStr2) {
+  if (aStr1 === aStr2) {
+    return 0;
+  }
+
+  if (aStr1 > aStr2) {
+    return 1;
+  }
+
+  return -1;
+}
+
+/**
+ * Comparator between two mappings with inflated source and name strings where
+ * the generated positions are compared.
+ */
+function compareByGeneratedPositionsInflated(mappingA, mappingB) {
+  var cmp = mappingA.generatedLine - mappingB.generatedLine;
+  if (cmp !== 0) {
+    return cmp;
+  }
+
+  cmp = mappingA.generatedColumn - mappingB.generatedColumn;
+  if (cmp !== 0) {
+    return cmp;
+  }
+
+  cmp = strcmp(mappingA.source, mappingB.source);
+  if (cmp !== 0) {
+    return cmp;
+  }
+
+  cmp = mappingA.originalLine - mappingB.originalLine;
+  if (cmp !== 0) {
+    return cmp;
+  }
+
+  cmp = mappingA.originalColumn - mappingB.originalColumn;
+  if (cmp !== 0) {
+    return cmp;
+  }
+
+  return strcmp(mappingA.name, mappingB.name);
+}
+exports.compareByGeneratedPositionsInflated = compareByGeneratedPositionsInflated;
+
+},{}],12:[function(require,module,exports){
+/*
+ * Copyright 2009-2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE.txt or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+exports.SourceMapGenerator = require('./lib/source-map-generator').SourceMapGenerator;
+exports.SourceMapConsumer = require('./lib/source-map-consumer').SourceMapConsumer;
+exports.SourceNode = require('./lib/source-node').SourceNode;
+
+},{"./lib/source-map-consumer":8,"./lib/source-map-generator":9,"./lib/source-node":10}],"/lib/opal/cli_runners/source-map-support.js":[function(require,module,exports){
+// IMPORTANT NOTICE:
+// Remember to update the browser version whenever this file is changed,
+// to do so, `run bin/build-browser-source-map-support`
+
+// The following is taken and adapted from the work of Evan Wallace
+// https://github.com/evanw/node-source-map-support v0.5.19
+
+// The MIT License (MIT)
+//
+// Copyright (c) 2014 Evan Wallace
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+var SourceMapConsumer = require('source-map').SourceMapConsumer;
+var path = require('path');
+
+var fs;
+try {
+  fs = require('fs');
+  if (!fs.existsSync || !fs.readFileSync) {
+    // fs doesn't have all methods we need
+    fs = null;
+  }
+} catch (err) {
+  /* nop */
+}
+
+var bufferFrom = require('buffer-from');
+
+/**
+ * Requires a module which is protected against bundler minification.
+ *
+ * @param {NodeModule} mod
+ * @param {string} request
+ */
+function dynamicRequire(mod, request) {
+  return mod.require(request);
+}  
+
+// Only install once if called multiple times
+var errorFormatterInstalled = false;
+var uncaughtShimInstalled = false;
+
+// If true, the caches are reset before a stack trace formatting operation
+var emptyCacheBetweenOperations = false;
+
+// Supports {browser, node, auto}
+var environment = "auto";
+
+// Maps a file path to a string containing the file contents
+var fileContentsCache = {};
+
+// Maps a file path to a source map for that file
+var sourceMapCache = {};
+
+// Regex for detecting source maps
+var reSourceMap = /^data:application\/json[^,]+base64,/;
+
+// Priority list of retrieve handlers
+var retrieveFileHandlers = [];
+var retrieveMapHandlers = [];
+
+function isInBrowser() {
+  if (environment === "browser")
+    return true;
+  if (environment === "node")
+    return false;
+  return ((typeof window !== 'undefined') && (typeof XMLHttpRequest === 'function') && !(window.require && window.module && window.process && window.process.type === "renderer"));
+}
+
+function hasGlobalProcessEventEmitter() {
+  return ((typeof process === 'object') && (process !== null) && (typeof process.on === 'function'));
+}
+
+function handlerExec(list) {
+  return function(arg) {
+    for (var i = 0; i < list.length; i++) {
+      var ret = list[i](arg);
+      if (ret) {
+        return ret;
+      }
+    }
+    return null;
+  };
+}
+
+var retrieveFile = handlerExec(retrieveFileHandlers);
+
+retrieveFileHandlers.push(function(path) {
+  // Trim the path to make sure there is no extra whitespace.
+  path = path.trim();
+  if (/^file:/.test(path)) {
+    // existsSync/readFileSync can't handle file protocol, but once stripped, it works
+    path = path.replace(/file:\/\/\/(\w:)?/, function(protocol, drive) {
+      return drive ?
+        '' : // file:///C:/dir/file -> C:/dir/file
+        '/'; // file:///root-dir/file -> /root-dir/file
+    });
+  }
+  if (path in fileContentsCache) {
+    return fileContentsCache[path];
+  }
+
+  var contents = '';
+  try {
+    if (!fs) {
+      // Use SJAX if we are in the browser
+      var xhr = new XMLHttpRequest();
+      xhr.open('GET', path, /** async */ false);
+      xhr.send(null);
+      if (xhr.readyState === 4 && xhr.status === 200) {
+        contents = xhr.responseText;
+      }
+    } else if (fs.existsSync(path)) {
+      // Otherwise, use the filesystem
+      contents = fs.readFileSync(path, 'utf8');
+    }
+  } catch (er) {
+    /* ignore any errors */
+  }
+
+  return fileContentsCache[path] = contents;
+});
+
+// Support URLs relative to a directory, but be careful about a protocol prefix
+// in case we are in the browser (i.e. directories may start with "http://" or "file:///")
+function supportRelativeURL(file, url) {
+  // Force file to null otherwise it will relativize locations to the current file
+  file = null
+
+  if (!file) return url;
+  var dir = path.dirname(file);
+  var match = /^\w+:\/\/[^\/]*/.exec(dir);
+  var protocol = match ? match[0] : '';
+  var startPath = dir.slice(protocol.length);
+  if (protocol && /^\/\w\:/.test(startPath)) {
+    // handle file:///C:/ paths
+    protocol += '/';
+    return protocol + path.resolve(dir.slice(protocol.length), url).replace(/\\/g, '/');
+  }
+  return protocol + path.resolve(dir.slice(protocol.length), url);
+}
+
+function retrieveSourceMapURL(source) {
+  var fileData;
+
+  if (isInBrowser()) {
+     try {
+       var xhr = new XMLHttpRequest();
+       xhr.open('GET', source, false);
+       xhr.send(null);
+       fileData = xhr.readyState === 4 ? xhr.responseText : null;
+
+       // Support providing a sourceMappingURL via the SourceMap header
+       var sourceMapHeader = xhr.getResponseHeader("SourceMap") ||
+                             xhr.getResponseHeader("X-SourceMap");
+       if (sourceMapHeader) {
+         return sourceMapHeader;
+       }
+     } catch (e) {
+     }
+  }
+
+  // Get the URL of the source map
+  fileData = retrieveFile(source);
+  var re = /(?:\/\/[@#][\s]*sourceMappingURL=([^\s'"]+)[\s]*$)|(?:\/\*[@#][\s]*sourceMappingURL=([^\s*'"]+)[\s]*(?:\*\/)[\s]*$)/mg;
+  // Keep executing the search to find the *last* sourceMappingURL to avoid
+  // picking up sourceMappingURLs from comments, strings, etc.
+  var lastMatch, match;
+  while (match = re.exec(fileData)) lastMatch = match;
+  if (!lastMatch) return null;
+  return lastMatch[1];
+};
+
+// Can be overridden by the retrieveSourceMap option to install. Takes a
+// generated source filename; returns a {map, optional url} object, or null if
+// there is no source map.  The map field may be either a string or the parsed
+// JSON object (ie, it must be a valid argument to the SourceMapConsumer
+// constructor).
+var retrieveSourceMap = handlerExec(retrieveMapHandlers);
+retrieveMapHandlers.push(function(source) {
+  var sourceMappingURL = retrieveSourceMapURL(source);
+  if (!sourceMappingURL) return null;
+
+  // Read the contents of the source map
+  var sourceMapData;
+  if (reSourceMap.test(sourceMappingURL)) {
+    // Support source map URL as a data url
+    var rawData = sourceMappingURL.slice(sourceMappingURL.indexOf(',') + 1);
+    sourceMapData = bufferFrom(rawData, "base64").toString();
+    sourceMappingURL = source;
+  } else {
+    // Support source map URLs relative to the source URL
+    sourceMappingURL = supportRelativeURL(source, sourceMappingURL);
+    sourceMapData = retrieveFile(sourceMappingURL);
+  }
+
+  if (!sourceMapData) {
+    return null;
+  }
+
+  return {
+    url: sourceMappingURL,
+    map: sourceMapData
+  };
+});
+
+function mapSourcePosition(position) {
+  var sourceMap = sourceMapCache[position.source];
+  if (!sourceMap) {
+    // Call the (overrideable) retrieveSourceMap function to get the source map.
+    var urlAndMap = retrieveSourceMap(position.source);
+    if (urlAndMap) {
+      sourceMap = sourceMapCache[position.source] = {
+        url: urlAndMap.url,
+        map: new SourceMapConsumer(urlAndMap.map)
+      };
+
+      // Load all sources stored inline with the source map into the file cache
+      // to pretend like they are already loaded. They may not exist on disk.
+      if (sourceMap.map.sourcesContent) {
+        sourceMap.map.sources.forEach(function(source, i) {
+          var contents = sourceMap.map.sourcesContent[i];
+          if (contents) {
+            var url = supportRelativeURL(sourceMap.url, source);
+            fileContentsCache[url] = contents;
+          }
+        });
+      }
+    } else {
+      sourceMap = sourceMapCache[position.source] = {
+        url: null,
+        map: null
+      };
+    }
+  }
+
+  // Resolve the source URL relative to the URL of the source map
+  if (sourceMap && sourceMap.map && typeof sourceMap.map.originalPositionFor === 'function') {
+    var originalPosition = sourceMap.map.originalPositionFor(position);
+
+    // Only return the original position if a matching line was found. If no
+    // matching line is found then we return position instead, which will cause
+    // the stack trace to print the path and line for the compiled file. It is
+    // better to give a precise location in the compiled file than a vague
+    // location in the original file.
+    if (originalPosition.source !== null) {
+      originalPosition.source = supportRelativeURL(
+        sourceMap.url, originalPosition.source);
+      return originalPosition;
+    }
+  }
+
+  return position;
+}
+
+// Parses code generated by FormatEvalOrigin(), a function inside V8:
+// https://code.google.com/p/v8/source/browse/trunk/src/messages.js
+function mapEvalOrigin(origin) {
+  // Most eval() calls are in this format
+  var match = /^eval from ([^(]+) \((.+):(\d+):(\d+)\)$/.exec(origin);
+  if (match) {
+    var position = mapSourcePosition({
+      source: match[2],
+      line: +match[3],
+      column: match[4] - 1
+    });
+    return 'eval from ' + match[1] + ' (' + position.source + ':' +
+      position.line + ':' + (position.column + 1) + ')';
+  }
+
+  // Parse nested eval() calls using recursion
+  match = /^eval from ([^(]+) \((.+)\)$/.exec(origin);
+  if (match) {
+    return 'eval from ' + match[1] + ' (' + mapEvalOrigin(match[2]) + ')';
+  }
+
+  // Make sure we still return useful information if we didn't find anything
+  return origin;
+}
+
+// This is copied almost verbatim from the V8 source code at
+// https://code.google.com/p/v8/source/browse/trunk/src/messages.js. The
+// implementation of wrapCallSite() used to just forward to the actual source
+// code of CallSite.prototype.toString but unfortunately a new release of V8
+// did something to the prototype chain and broke the shim. The only fix I
+// could find was copy/paste.
+function CallSiteToString() {
+  var fileName;
+  var fileLocation = "";
+  if (this.isNative()) {
+    fileLocation = "native";
+  } else {
+    fileName = this.getScriptNameOrSourceURL();
+    if (!fileName && this.isEval()) {
+      fileLocation = this.getEvalOrigin();
+      fileLocation += ", ";  // Expecting source position to follow.
+    }
+
+    if (fileName) {
+      fileLocation += fileName;
+    } else {
+      // Source code does not originate from a file and is not native, but we
+      // can still get the source position inside the source string, e.g. in
+      // an eval string.
+      fileLocation += "<anonymous>";
+    }
+
+    if (fileLocation.startsWith("corelib/")) {
+      fileLocation = "<internal:" + fileLocation + ">";
+    } else if (fileLocation.endsWith(".js")) {
+      fileLocation = "<js:" + fileLocation + ">";
+    }
+
+    var lineNumber = this.getLineNumber();
+    if (lineNumber != null) {
+      fileLocation += ":" + lineNumber;
+      var columnNumber = this.getColumnNumber();
+      if (columnNumber) {
+        fileLocation += ":" + columnNumber;
+      }
+    }
+  }
+
+  var line = "";
+  var functionName = this.getFunctionName();
+  var addSuffix = true;
+  var isConstructor = this.isConstructor();
+  var isMethodCall = !(this.isToplevel() || isConstructor);
+  if (isMethodCall) {
+    var typeName = this.getTypeName();
+    // Fixes shim to be backward compatable with Node v0 to v4
+    if (typeName === "[object Object]") {
+      typeName = "null";
+    }
+    var methodName = this.getMethodName();
+    if (functionName) {
+      if (functionName.startsWith("$$")) {
+        functionName = functionName.slice(2);
+      } else if (functionName.startsWith("$")) {
+        functionName = functionName.slice(1);
+      }
+      if (typeName && functionName.indexOf(typeName) != 0) {
+        line += typeName + ".";
+      }
+      line += functionName;
+      if (methodName && functionName.indexOf("." + methodName) != functionName.length - methodName.length - 1) {
+        line += " [as " + methodName + "]";
+      }
+    } else {
+      line += typeName + "." + (methodName || "<anonymous>");
+    }
+  } else if (isConstructor) {
+    line += "new " + (functionName || "<anonymous>");
+  } else if (functionName) {
+    line += functionName;
+  } else {
+    line += fileLocation;
+    addSuffix = false;
+  }
+  if (addSuffix) {
+    line += " (" + fileLocation + ")";
+  }
+  line = fileLocation + ":in `" + (functionName || methodName) + "'"
+  return line;
+}
+
+function cloneCallSite(frame) {
+  var object = {};
+  Object.getOwnPropertyNames(Object.getPrototypeOf(frame)).forEach(function(name) {
+    object[name] = /^(?:is|get)/.test(name) ? function() { return frame[name].call(frame); } : frame[name];
+  });
+  object.toString = CallSiteToString;
+  return object;
+}
+
+function wrapCallSite(frame, state) {
+  // provides interface backward compatibility
+  if (state === undefined) {
+    state = { nextPosition: null, curPosition: null }
+  }
+  if(frame.isNative()) {
+    state.curPosition = null;
+    return frame;
+  }
+
+  // Most call sites will return the source file from getFileName(), but code
+  // passed to eval() ending in "//# sourceURL=..." will return the source file
+  // from getScriptNameOrSourceURL() instead
+  var source = frame.getFileName() || frame.getScriptNameOrSourceURL();
+  if (source) {
+    var line = frame.getLineNumber();
+    var column = frame.getColumnNumber() - 1;
+
+    // Fix position in Node where some (internal) code is prepended.
+    // See https://github.com/evanw/node-source-map-support/issues/36
+    // Header removed in node at ^10.16 || >=11.11.0
+    // v11 is not an LTS candidate, we can just test the one version with it.
+    // Test node versions for: 10.16-19, 10.20+, 12-19, 20-99, 100+, or 11.11
+    var noHeader = /^v(10\.1[6-9]|10\.[2-9][0-9]|10\.[0-9]{3,}|1[2-9]\d*|[2-9]\d|\d{3,}|11\.11)/;
+    var headerLength = noHeader.test(process.version) ? 0 : 62;
+    if (line === 1 && column > headerLength && !isInBrowser() && !frame.isEval()) {
+      column -= headerLength;
+    }
+
+    var position = mapSourcePosition({
+      source: source,
+      line: line,
+      column: column
+    });
+    state.curPosition = position;
+    frame = cloneCallSite(frame);
+    var originalFunctionName = frame.getFunctionName;
+    frame.getFunctionName = function() {
+      if (state.nextPosition == null) {
+        return originalFunctionName();
+      }
+      return state.nextPosition.name || originalFunctionName();
+    };
+    frame.getFileName = function() { return position.source; };
+    frame.getLineNumber = function() { return position.line; };
+    frame.getColumnNumber = function() { return position.column + 1; };
+    frame.getScriptNameOrSourceURL = function() { return position.source; };
+    return frame;
+  }
+
+  // Code called using eval() needs special handling
+  var origin = frame.isEval() && frame.getEvalOrigin();
+  if (origin) {
+    origin = mapEvalOrigin(origin);
+    frame = cloneCallSite(frame);
+    frame.getEvalOrigin = function() { return origin; };
+    return frame;
+  }
+
+  // If we get here then we were unable to change the source position
+  return frame;
+}
+
+// This function is part of the V8 stack trace API, for more info see:
+// https://v8.dev/docs/stack-trace-api
+function prepareStackTrace(error, stack) {
+  if (emptyCacheBetweenOperations) {
+    fileContentsCache = {};
+    sourceMapCache = {};
+  }
+
+  var name = error.name || 'Error';
+  var message = error.message || '';
+  var errorString = name + ": " + message;
+
+  var state = { nextPosition: null, curPosition: null };
+  var processedStack = [];
+  for (var i = stack.length - 1; i >= 0; i--) {
+    processedStack.push('\n  from ' + wrapCallSite(stack[i], state));
+    state.nextPosition = state.curPosition;
+  }
+  state.curPosition = state.nextPosition = null;
+  return errorString + processedStack.reverse().join('');
+}
+
+// Generate position and snippet of original source with pointer
+function getErrorSource(error) {
+  var match = /\n  from [^(]+ \((.*):(\d+):(\d+)\)/.exec(error.stack);
+  if (match) {
+    var source = match[1];
+    var line = +match[2];
+    var column = +match[3];
+
+    // Support the inline sourceContents inside the source map
+    var contents = fileContentsCache[source];
+
+    // Support files on disk
+    if (!contents && fs && fs.existsSync(source)) {
+      try {
+        contents = fs.readFileSync(source, 'utf8');
+      } catch (er) {
+        contents = '';
+      }
+    }
+
+    // Format the line from the original source code like node does
+    if (contents) {
+      var code = contents.split(/(?:\r\n|\r|\n)/)[line - 1];
+      if (code) {
+        return source + ':' + line + '\n' + code + '\n' +
+          new Array(column).join(' ') + '^';
+      }
+    }
+  }
+  return null;
+}
+
+function printErrorAndExit (error) {
+  var source = getErrorSource(error);
+
+  // Ensure error is printed synchronously and not truncated
+  if (process.stderr._handle && process.stderr._handle.setBlocking) {
+    process.stderr._handle.setBlocking(true);
+  }
+
+  if (typeof error.$full_message === 'function') {
+    var full_message = error.$full_message();
+    while (full_message[full_message.length - 1] == "\n") {
+      full_message = full_message.slice(0, full_message.length - 1);
+    }
+    console.error(full_message);
+  }
+  else {
+    if (source) {
+      console.error();
+      console.error(source);
+    }
+
+    console.error(error.stack);
+  }
+  process.exit(1);
+}
+
+function shimEmitUncaughtException () {
+  var origEmit = process.emit;
+
+  process.emit = function (type) {
+    if (type === 'uncaughtException') {
+      var hasStack = (arguments[1] && arguments[1].stack);
+      var hasListeners = (this.listeners(type).length > 0);
+
+      if (hasStack && !hasListeners) {
+        return printErrorAndExit(arguments[1]);
+      }
+    }
+
+    return origEmit.apply(this, arguments);
+  };
+}
+
+var originalRetrieveFileHandlers = retrieveFileHandlers.slice(0);
+var originalRetrieveMapHandlers = retrieveMapHandlers.slice(0);
+
+exports.wrapCallSite = wrapCallSite;
+exports.getErrorSource = getErrorSource;
+exports.mapSourcePosition = mapSourcePosition;
+exports.retrieveSourceMap = retrieveSourceMap;
+
+exports.install = function(options) {
+  options = options || {};
+
+  if (options.environment) {
+    environment = options.environment;
+    if (["node", "browser", "auto"].indexOf(environment) === -1) {
+      throw new Error("environment " + environment + " was unknown. Available options are {auto, browser, node}")
+    }
+  }
+
+  // Allow sources to be found by methods other than reading the files
+  // directly from disk.
+  if (options.retrieveFile) {
+    if (options.overrideRetrieveFile) {
+      retrieveFileHandlers.length = 0;
+    }
+
+    retrieveFileHandlers.unshift(options.retrieveFile);
+  }
+
+  // Allow source maps to be found by methods other than reading the files
+  // directly from disk.
+  if (options.retrieveSourceMap) {
+    if (options.overrideRetrieveSourceMap) {
+      retrieveMapHandlers.length = 0;
+    }
+
+    retrieveMapHandlers.unshift(options.retrieveSourceMap);
+  }
+
+  // Support runtime transpilers that include inline source maps
+  if (options.hookRequire && !isInBrowser()) {
+    // Use dynamicRequire to avoid including in browser bundles
+    var Module = dynamicRequire(module, 'module');
+    var $compile = Module.prototype._compile;
+
+    if (!$compile.__sourceMapSupport) {
+      Module.prototype._compile = function(content, filename) {
+        fileContentsCache[filename] = content;
+        sourceMapCache[filename] = undefined;
+        return $compile.call(this, content, filename);
+      };
+
+      Module.prototype._compile.__sourceMapSupport = true;
+    }
+  }
+
+  // Configure options
+  if (!emptyCacheBetweenOperations) {
+    emptyCacheBetweenOperations = 'emptyCacheBetweenOperations' in options ?
+      options.emptyCacheBetweenOperations : false;
+  }
+
+  // Install the error reformatter
+  if (!errorFormatterInstalled) {
+    errorFormatterInstalled = true;
+    Error.prepareStackTrace = prepareStackTrace;
+  }
+
+  if (!uncaughtShimInstalled) {
+    var installHandler = 'handleUncaughtExceptions' in options ?
+      options.handleUncaughtExceptions : true;
+
+    // Do not override 'uncaughtException' with our own handler in Node.js
+    // Worker threads. Workers pass the error to the main thread as an event,
+    // rather than printing something to stderr and exiting.
+    try {
+      // We need to use `dynamicRequire` because `require` on it's own will be optimized by WebPack/Browserify.
+      var worker_threads = dynamicRequire(module, 'worker_threads');
+      if (worker_threads.isMainThread === false) {
+        installHandler = false;
+      }
+    } catch(e) {}      
+
+    // Provide the option to not install the uncaught exception handler. This is
+    // to support other uncaught exception handlers (in test frameworks, for
+    // example). If this handler is not installed and there are no other uncaught
+    // exception handlers, uncaught exceptions will be caught by node's built-in
+    // exception handler and the process will still be terminated. However, the
+    // generated JavaScript code will be shown above the stack trace instead of
+    // the original source code.
+    if (installHandler && hasGlobalProcessEventEmitter()) {
+      uncaughtShimInstalled = true;
+      shimEmitUncaughtException();
+    }
+  }
+};
+
+exports.resetRetrieveHandlers = function() {
+  retrieveFileHandlers.length = 0;
+  retrieveMapHandlers.length = 0;
+
+  retrieveFileHandlers = originalRetrieveFileHandlers.slice(0);
+  retrieveMapHandlers = originalRetrieveMapHandlers.slice(0);
+
+  retrieveSourceMap = handlerExec(retrieveMapHandlers);
+  retrieveFile = handlerExec(retrieveFileHandlers);
+}
+
+// Autoinstall.
+exports.install();
+
+// Regenerate the browser version with:
+// browserify lib/opal/cli_runners/source-map-support.js -s sourceMapSupport | uglifyjs -c > lib/opal/cli_runners/source-map-support-browser.js
+
+// = Stacktrace Examples:
+//
+// == Traditional Ruby stacktrace:
+//
+// /Users/elia/Code/opal/lib/opal/cli_runners/system_runner.rb:43:in `call': unhandled exception
+//   from /Users/elia/Code/opal/lib/opal/cli_runners/nodejs.rb:14:in `call'
+//   from /Users/elia/Code/opal/lib/opal/cli_runners.rb:50:in `block in register_runner'
+//   from /Users/elia/Code/opal/lib/opal/cli.rb:62:in `run'
+//   from /Users/elia/Code/opal/exe/opal:24:in `<top (required)>'
+//   from bin/opal:4:in `load'
+//   from bin/opal:4:in `<main>'
+//
+// == Traceback style:
+//
+// Traceback (most recent call last):
+//   6: from bin/opal:4:in `<main>'
+//   5: from bin/opal:4:in `load'
+//   4: from /Users/elia/Code/opal/exe/opal:24:in `<top (required)>'
+//   3: from /Users/elia/Code/opal/lib/opal/cli.rb:62:in `run'
+//   2: from /Users/elia/Code/opal/lib/opal/cli_runners.rb:50:in `block in register_runner'
+//   1: from /Users/elia/Code/opal/lib/opal/cli_runners/nodejs.rb:14:in `call'
+// /Users/elia/Code/opal/lib/opal/cli_runners/system_runner.rb:43:in `call': unhandled exception
+
+},{"buffer-from":1,"fs":undefined,"path":undefined,"source-map":12}]},{},[])("/lib/opal/cli_runners/source-map-support.js")
+});
diff --git a/lib/opal/cli_runners/source-map-support.js b/lib/opal/cli_runners/source-map-support.js
new file mode 100644
index 00000000..dfe2b50e
--- /dev/null
+++ b/lib/opal/cli_runners/source-map-support.js
@@ -0,0 +1,687 @@
+// IMPORTANT NOTICE:
+// Remember to update the browser version whenever this file is changed,
+// to do so, `run bin/build-browser-source-map-support`
+
+// The following is taken and adapted from the work of Evan Wallace
+// https://github.com/evanw/node-source-map-support v0.5.19
+
+// The MIT License (MIT)
+//
+// Copyright (c) 2014 Evan Wallace
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+var SourceMapConsumer = require('source-map').SourceMapConsumer;
+var path = require('path');
+
+var fs;
+try {
+  fs = require('fs');
+  if (!fs.existsSync || !fs.readFileSync) {
+    // fs doesn't have all methods we need
+    fs = null;
+  }
+} catch (err) {
+  /* nop */
+}
+
+var bufferFrom = require('buffer-from');
+
+/**
+ * Requires a module which is protected against bundler minification.
+ *
+ * @param {NodeModule} mod
+ * @param {string} request
+ */
+function dynamicRequire(mod, request) {
+  return mod.require(request);
+}  
+
+// Only install once if called multiple times
+var errorFormatterInstalled = false;
+var uncaughtShimInstalled = false;
+
+// If true, the caches are reset before a stack trace formatting operation
+var emptyCacheBetweenOperations = false;
+
+// Supports {browser, node, auto}
+var environment = "auto";
+
+// Maps a file path to a string containing the file contents
+var fileContentsCache = {};
+
+// Maps a file path to a source map for that file
+var sourceMapCache = {};
+
+// Regex for detecting source maps
+var reSourceMap = /^data:application\/json[^,]+base64,/;
+
+// Priority list of retrieve handlers
+var retrieveFileHandlers = [];
+var retrieveMapHandlers = [];
+
+function isInBrowser() {
+  if (environment === "browser")
+    return true;
+  if (environment === "node")
+    return false;
+  return ((typeof window !== 'undefined') && (typeof XMLHttpRequest === 'function') && !(window.require && window.module && window.process && window.process.type === "renderer"));
+}
+
+function hasGlobalProcessEventEmitter() {
+  return ((typeof process === 'object') && (process !== null) && (typeof process.on === 'function'));
+}
+
+function handlerExec(list) {
+  return function(arg) {
+    for (var i = 0; i < list.length; i++) {
+      var ret = list[i](arg);
+      if (ret) {
+        return ret;
+      }
+    }
+    return null;
+  };
+}
+
+var retrieveFile = handlerExec(retrieveFileHandlers);
+
+retrieveFileHandlers.push(function(path) {
+  // Trim the path to make sure there is no extra whitespace.
+  path = path.trim();
+  if (/^file:/.test(path)) {
+    // existsSync/readFileSync can't handle file protocol, but once stripped, it works
+    path = path.replace(/file:\/\/\/(\w:)?/, function(protocol, drive) {
+      return drive ?
+        '' : // file:///C:/dir/file -> C:/dir/file
+        '/'; // file:///root-dir/file -> /root-dir/file
+    });
+  }
+  if (path in fileContentsCache) {
+    return fileContentsCache[path];
+  }
+
+  var contents = '';
+  try {
+    if (!fs) {
+      // Use SJAX if we are in the browser
+      var xhr = new XMLHttpRequest();
+      xhr.open('GET', path, /** async */ false);
+      xhr.send(null);
+      if (xhr.readyState === 4 && xhr.status === 200) {
+        contents = xhr.responseText;
+      }
+    } else if (fs.existsSync(path)) {
+      // Otherwise, use the filesystem
+      contents = fs.readFileSync(path, 'utf8');
+    }
+  } catch (er) {
+    /* ignore any errors */
+  }
+
+  return fileContentsCache[path] = contents;
+});
+
+// Support URLs relative to a directory, but be careful about a protocol prefix
+// in case we are in the browser (i.e. directories may start with "http://" or "file:///")
+function supportRelativeURL(file, url) {
+  // Force file to null otherwise it will relativize locations to the current file
+  file = null
+
+  if (!file) return url;
+  var dir = path.dirname(file);
+  var match = /^\w+:\/\/[^\/]*/.exec(dir);
+  var protocol = match ? match[0] : '';
+  var startPath = dir.slice(protocol.length);
+  if (protocol && /^\/\w\:/.test(startPath)) {
+    // handle file:///C:/ paths
+    protocol += '/';
+    return protocol + path.resolve(dir.slice(protocol.length), url).replace(/\\/g, '/');
+  }
+  return protocol + path.resolve(dir.slice(protocol.length), url);
+}
+
+function retrieveSourceMapURL(source) {
+  var fileData;
+
+  if (isInBrowser()) {
+     try {
+       var xhr = new XMLHttpRequest();
+       xhr.open('GET', source, false);
+       xhr.send(null);
+       fileData = xhr.readyState === 4 ? xhr.responseText : null;
+
+       // Support providing a sourceMappingURL via the SourceMap header
+       var sourceMapHeader = xhr.getResponseHeader("SourceMap") ||
+                             xhr.getResponseHeader("X-SourceMap");
+       if (sourceMapHeader) {
+         return sourceMapHeader;
+       }
+     } catch (e) {
+     }
+  }
+
+  // Get the URL of the source map
+  fileData = retrieveFile(source);
+  var re = /(?:\/\/[@#][\s]*sourceMappingURL=([^\s'"]+)[\s]*$)|(?:\/\*[@#][\s]*sourceMappingURL=([^\s*'"]+)[\s]*(?:\*\/)[\s]*$)/mg;
+  // Keep executing the search to find the *last* sourceMappingURL to avoid
+  // picking up sourceMappingURLs from comments, strings, etc.
+  var lastMatch, match;
+  while (match = re.exec(fileData)) lastMatch = match;
+  if (!lastMatch) return null;
+  return lastMatch[1];
+};
+
+// Can be overridden by the retrieveSourceMap option to install. Takes a
+// generated source filename; returns a {map, optional url} object, or null if
+// there is no source map.  The map field may be either a string or the parsed
+// JSON object (ie, it must be a valid argument to the SourceMapConsumer
+// constructor).
+var retrieveSourceMap = handlerExec(retrieveMapHandlers);
+retrieveMapHandlers.push(function(source) {
+  var sourceMappingURL = retrieveSourceMapURL(source);
+  if (!sourceMappingURL) return null;
+
+  // Read the contents of the source map
+  var sourceMapData;
+  if (reSourceMap.test(sourceMappingURL)) {
+    // Support source map URL as a data url
+    var rawData = sourceMappingURL.slice(sourceMappingURL.indexOf(',') + 1);
+    sourceMapData = bufferFrom(rawData, "base64").toString();
+    sourceMappingURL = source;
+  } else {
+    // Support source map URLs relative to the source URL
+    sourceMappingURL = supportRelativeURL(source, sourceMappingURL);
+    sourceMapData = retrieveFile(sourceMappingURL);
+  }
+
+  if (!sourceMapData) {
+    return null;
+  }
+
+  return {
+    url: sourceMappingURL,
+    map: sourceMapData
+  };
+});
+
+function mapSourcePosition(position) {
+  var sourceMap = sourceMapCache[position.source];
+  if (!sourceMap) {
+    // Call the (overrideable) retrieveSourceMap function to get the source map.
+    var urlAndMap = retrieveSourceMap(position.source);
+    if (urlAndMap) {
+      sourceMap = sourceMapCache[position.source] = {
+        url: urlAndMap.url,
+        map: new SourceMapConsumer(urlAndMap.map)
+      };
+
+      // Load all sources stored inline with the source map into the file cache
+      // to pretend like they are already loaded. They may not exist on disk.
+      if (sourceMap.map.sourcesContent) {
+        sourceMap.map.sources.forEach(function(source, i) {
+          var contents = sourceMap.map.sourcesContent[i];
+          if (contents) {
+            var url = supportRelativeURL(sourceMap.url, source);
+            fileContentsCache[url] = contents;
+          }
+        });
+      }
+    } else {
+      sourceMap = sourceMapCache[position.source] = {
+        url: null,
+        map: null
+      };
+    }
+  }
+
+  // Resolve the source URL relative to the URL of the source map
+  if (sourceMap && sourceMap.map && typeof sourceMap.map.originalPositionFor === 'function') {
+    var originalPosition = sourceMap.map.originalPositionFor(position);
+
+    // Only return the original position if a matching line was found. If no
+    // matching line is found then we return position instead, which will cause
+    // the stack trace to print the path and line for the compiled file. It is
+    // better to give a precise location in the compiled file than a vague
+    // location in the original file.
+    if (originalPosition.source !== null) {
+      originalPosition.source = supportRelativeURL(
+        sourceMap.url, originalPosition.source);
+      return originalPosition;
+    }
+  }
+
+  return position;
+}
+
+// Parses code generated by FormatEvalOrigin(), a function inside V8:
+// https://code.google.com/p/v8/source/browse/trunk/src/messages.js
+function mapEvalOrigin(origin) {
+  // Most eval() calls are in this format
+  var match = /^eval from ([^(]+) \((.+):(\d+):(\d+)\)$/.exec(origin);
+  if (match) {
+    var position = mapSourcePosition({
+      source: match[2],
+      line: +match[3],
+      column: match[4] - 1
+    });
+    return 'eval from ' + match[1] + ' (' + position.source + ':' +
+      position.line + ':' + (position.column + 1) + ')';
+  }
+
+  // Parse nested eval() calls using recursion
+  match = /^eval from ([^(]+) \((.+)\)$/.exec(origin);
+  if (match) {
+    return 'eval from ' + match[1] + ' (' + mapEvalOrigin(match[2]) + ')';
+  }
+
+  // Make sure we still return useful information if we didn't find anything
+  return origin;
+}
+
+// This is copied almost verbatim from the V8 source code at
+// https://code.google.com/p/v8/source/browse/trunk/src/messages.js. The
+// implementation of wrapCallSite() used to just forward to the actual source
+// code of CallSite.prototype.toString but unfortunately a new release of V8
+// did something to the prototype chain and broke the shim. The only fix I
+// could find was copy/paste.
+function CallSiteToString() {
+  var fileName;
+  var fileLocation = "";
+  if (this.isNative()) {
+    fileLocation = "native";
+  } else {
+    fileName = this.getScriptNameOrSourceURL();
+    if (!fileName && this.isEval()) {
+      fileLocation = this.getEvalOrigin();
+      fileLocation += ", ";  // Expecting source position to follow.
+    }
+
+    if (fileName) {
+      fileLocation += fileName;
+    } else {
+      // Source code does not originate from a file and is not native, but we
+      // can still get the source position inside the source string, e.g. in
+      // an eval string.
+      fileLocation += "<anonymous>";
+    }
+
+    if (fileLocation.startsWith("corelib/")) {
+      fileLocation = "<internal:" + fileLocation + ">";
+    } else if (fileLocation.endsWith(".js")) {
+      fileLocation = "<js:" + fileLocation + ">";
+    }
+
+    var lineNumber = this.getLineNumber();
+    if (lineNumber != null) {
+      fileLocation += ":" + lineNumber;
+      var columnNumber = this.getColumnNumber();
+      if (columnNumber) {
+        fileLocation += ":" + columnNumber;
+      }
+    }
+  }
+
+  var line = "";
+  var functionName = this.getFunctionName();
+  var addSuffix = true;
+  var isConstructor = this.isConstructor();
+  var isMethodCall = !(this.isToplevel() || isConstructor);
+  if (isMethodCall) {
+    var typeName = this.getTypeName();
+    // Fixes shim to be backward compatable with Node v0 to v4
+    if (typeName === "[object Object]") {
+      typeName = "null";
+    }
+    var methodName = this.getMethodName();
+    if (functionName) {
+      if (functionName.startsWith("$$")) {
+        functionName = functionName.slice(2);
+      } else if (functionName.startsWith("$")) {
+        functionName = functionName.slice(1);
+      }
+      if (typeName && functionName.indexOf(typeName) != 0) {
+        line += typeName + ".";
+      }
+      line += functionName;
+      if (methodName && functionName.indexOf("." + methodName) != functionName.length - methodName.length - 1) {
+        line += " [as " + methodName + "]";
+      }
+    } else {
+      line += typeName + "." + (methodName || "<anonymous>");
+    }
+  } else if (isConstructor) {
+    line += "new " + (functionName || "<anonymous>");
+  } else if (functionName) {
+    line += functionName;
+  } else {
+    line += fileLocation;
+    addSuffix = false;
+  }
+  if (addSuffix) {
+    line += " (" + fileLocation + ")";
+  }
+  line = fileLocation + ":in `" + (functionName || methodName) + "'"
+  return line;
+}
+
+function cloneCallSite(frame) {
+  var object = {};
+  Object.getOwnPropertyNames(Object.getPrototypeOf(frame)).forEach(function(name) {
+    object[name] = /^(?:is|get)/.test(name) ? function() { return frame[name].call(frame); } : frame[name];
+  });
+  object.toString = CallSiteToString;
+  return object;
+}
+
+function wrapCallSite(frame, state) {
+  // provides interface backward compatibility
+  if (state === undefined) {
+    state = { nextPosition: null, curPosition: null }
+  }
+  if(frame.isNative()) {
+    state.curPosition = null;
+    return frame;
+  }
+
+  // Most call sites will return the source file from getFileName(), but code
+  // passed to eval() ending in "//# sourceURL=..." will return the source file
+  // from getScriptNameOrSourceURL() instead
+  var source = frame.getFileName() || frame.getScriptNameOrSourceURL();
+  if (source) {
+    var line = frame.getLineNumber();
+    var column = frame.getColumnNumber() - 1;
+
+    // Fix position in Node where some (internal) code is prepended.
+    // See https://github.com/evanw/node-source-map-support/issues/36
+    // Header removed in node at ^10.16 || >=11.11.0
+    // v11 is not an LTS candidate, we can just test the one version with it.
+    // Test node versions for: 10.16-19, 10.20+, 12-19, 20-99, 100+, or 11.11
+    var noHeader = /^v(10\.1[6-9]|10\.[2-9][0-9]|10\.[0-9]{3,}|1[2-9]\d*|[2-9]\d|\d{3,}|11\.11)/;
+    var headerLength = noHeader.test(process.version) ? 0 : 62;
+    if (line === 1 && column > headerLength && !isInBrowser() && !frame.isEval()) {
+      column -= headerLength;
+    }
+
+    var position = mapSourcePosition({
+      source: source,
+      line: line,
+      column: column
+    });
+    state.curPosition = position;
+    frame = cloneCallSite(frame);
+    var originalFunctionName = frame.getFunctionName;
+    frame.getFunctionName = function() {
+      if (state.nextPosition == null) {
+        return originalFunctionName();
+      }
+      return state.nextPosition.name || originalFunctionName();
+    };
+    frame.getFileName = function() { return position.source; };
+    frame.getLineNumber = function() { return position.line; };
+    frame.getColumnNumber = function() { return position.column + 1; };
+    frame.getScriptNameOrSourceURL = function() { return position.source; };
+    return frame;
+  }
+
+  // Code called using eval() needs special handling
+  var origin = frame.isEval() && frame.getEvalOrigin();
+  if (origin) {
+    origin = mapEvalOrigin(origin);
+    frame = cloneCallSite(frame);
+    frame.getEvalOrigin = function() { return origin; };
+    return frame;
+  }
+
+  // If we get here then we were unable to change the source position
+  return frame;
+}
+
+// This function is part of the V8 stack trace API, for more info see:
+// https://v8.dev/docs/stack-trace-api
+function prepareStackTrace(error, stack) {
+  if (emptyCacheBetweenOperations) {
+    fileContentsCache = {};
+    sourceMapCache = {};
+  }
+
+  var name = error.name || 'Error';
+  var message = error.message || '';
+  var errorString = name + ": " + message;
+
+  var state = { nextPosition: null, curPosition: null };
+  var processedStack = [];
+  for (var i = stack.length - 1; i >= 0; i--) {
+    processedStack.push('\n  from ' + wrapCallSite(stack[i], state));
+    state.nextPosition = state.curPosition;
+  }
+  state.curPosition = state.nextPosition = null;
+  return errorString + processedStack.reverse().join('');
+}
+
+// Generate position and snippet of original source with pointer
+function getErrorSource(error) {
+  var match = /\n  from [^(]+ \((.*):(\d+):(\d+)\)/.exec(error.stack);
+  if (match) {
+    var source = match[1];
+    var line = +match[2];
+    var column = +match[3];
+
+    // Support the inline sourceContents inside the source map
+    var contents = fileContentsCache[source];
+
+    // Support files on disk
+    if (!contents && fs && fs.existsSync(source)) {
+      try {
+        contents = fs.readFileSync(source, 'utf8');
+      } catch (er) {
+        contents = '';
+      }
+    }
+
+    // Format the line from the original source code like node does
+    if (contents) {
+      var code = contents.split(/(?:\r\n|\r|\n)/)[line - 1];
+      if (code) {
+        return source + ':' + line + '\n' + code + '\n' +
+          new Array(column).join(' ') + '^';
+      }
+    }
+  }
+  return null;
+}
+
+function printErrorAndExit (error) {
+  var source = getErrorSource(error);
+
+  // Ensure error is printed synchronously and not truncated
+  if (process.stderr._handle && process.stderr._handle.setBlocking) {
+    process.stderr._handle.setBlocking(true);
+  }
+
+  if (typeof error.$full_message === 'function') {
+    var full_message = error.$full_message();
+    while (full_message[full_message.length - 1] == "\n") {
+      full_message = full_message.slice(0, full_message.length - 1);
+    }
+    console.error(full_message);
+  }
+  else {
+    if (source) {
+      console.error();
+      console.error(source);
+    }
+
+    console.error(error.stack);
+  }
+  process.exit(1);
+}
+
+function shimEmitUncaughtException () {
+  var origEmit = process.emit;
+
+  process.emit = function (type) {
+    if (type === 'uncaughtException') {
+      var hasStack = (arguments[1] && arguments[1].stack);
+      var hasListeners = (this.listeners(type).length > 0);
+
+      if (hasStack && !hasListeners) {
+        return printErrorAndExit(arguments[1]);
+      }
+    }
+
+    return origEmit.apply(this, arguments);
+  };
+}
+
+var originalRetrieveFileHandlers = retrieveFileHandlers.slice(0);
+var originalRetrieveMapHandlers = retrieveMapHandlers.slice(0);
+
+exports.wrapCallSite = wrapCallSite;
+exports.getErrorSource = getErrorSource;
+exports.mapSourcePosition = mapSourcePosition;
+exports.retrieveSourceMap = retrieveSourceMap;
+
+exports.install = function(options) {
+  options = options || {};
+
+  if (options.environment) {
+    environment = options.environment;
+    if (["node", "browser", "auto"].indexOf(environment) === -1) {
+      throw new Error("environment " + environment + " was unknown. Available options are {auto, browser, node}")
+    }
+  }
+
+  // Allow sources to be found by methods other than reading the files
+  // directly from disk.
+  if (options.retrieveFile) {
+    if (options.overrideRetrieveFile) {
+      retrieveFileHandlers.length = 0;
+    }
+
+    retrieveFileHandlers.unshift(options.retrieveFile);
+  }
+
+  // Allow source maps to be found by methods other than reading the files
+  // directly from disk.
+  if (options.retrieveSourceMap) {
+    if (options.overrideRetrieveSourceMap) {
+      retrieveMapHandlers.length = 0;
+    }
+
+    retrieveMapHandlers.unshift(options.retrieveSourceMap);
+  }
+
+  // Support runtime transpilers that include inline source maps
+  if (options.hookRequire && !isInBrowser()) {
+    // Use dynamicRequire to avoid including in browser bundles
+    var Module = dynamicRequire(module, 'module');
+    var $compile = Module.prototype._compile;
+
+    if (!$compile.__sourceMapSupport) {
+      Module.prototype._compile = function(content, filename) {
+        fileContentsCache[filename] = content;
+        sourceMapCache[filename] = undefined;
+        return $compile.call(this, content, filename);
+      };
+
+      Module.prototype._compile.__sourceMapSupport = true;
+    }
+  }
+
+  // Configure options
+  if (!emptyCacheBetweenOperations) {
+    emptyCacheBetweenOperations = 'emptyCacheBetweenOperations' in options ?
+      options.emptyCacheBetweenOperations : false;
+  }
+
+  // Install the error reformatter
+  if (!errorFormatterInstalled) {
+    errorFormatterInstalled = true;
+    Error.prepareStackTrace = prepareStackTrace;
+  }
+
+  if (!uncaughtShimInstalled) {
+    var installHandler = 'handleUncaughtExceptions' in options ?
+      options.handleUncaughtExceptions : true;
+
+    // Do not override 'uncaughtException' with our own handler in Node.js
+    // Worker threads. Workers pass the error to the main thread as an event,
+    // rather than printing something to stderr and exiting.
+    try {
+      // We need to use `dynamicRequire` because `require` on it's own will be optimized by WebPack/Browserify.
+      var worker_threads = dynamicRequire(module, 'worker_threads');
+      if (worker_threads.isMainThread === false) {
+        installHandler = false;
+      }
+    } catch(e) {}      
+
+    // Provide the option to not install the uncaught exception handler. This is
+    // to support other uncaught exception handlers (in test frameworks, for
+    // example). If this handler is not installed and there are no other uncaught
+    // exception handlers, uncaught exceptions will be caught by node's built-in
+    // exception handler and the process will still be terminated. However, the
+    // generated JavaScript code will be shown above the stack trace instead of
+    // the original source code.
+    if (installHandler && hasGlobalProcessEventEmitter()) {
+      uncaughtShimInstalled = true;
+      shimEmitUncaughtException();
+    }
+  }
+};
+
+exports.resetRetrieveHandlers = function() {
+  retrieveFileHandlers.length = 0;
+  retrieveMapHandlers.length = 0;
+
+  retrieveFileHandlers = originalRetrieveFileHandlers.slice(0);
+  retrieveMapHandlers = originalRetrieveMapHandlers.slice(0);
+
+  retrieveSourceMap = handlerExec(retrieveMapHandlers);
+  retrieveFile = handlerExec(retrieveFileHandlers);
+}
+
+// Autoinstall.
+exports.install();
+
+// Regenerate the browser version with:
+// browserify lib/opal/cli_runners/source-map-support.js -s sourceMapSupport | uglifyjs -c > lib/opal/cli_runners/source-map-support-browser.js
+
+// = Stacktrace Examples:
+//
+// == Traditional Ruby stacktrace:
+//
+// /Users/elia/Code/opal/lib/opal/cli_runners/system_runner.rb:43:in `call': unhandled exception
+//   from /Users/elia/Code/opal/lib/opal/cli_runners/nodejs.rb:14:in `call'
+//   from /Users/elia/Code/opal/lib/opal/cli_runners.rb:50:in `block in register_runner'
+//   from /Users/elia/Code/opal/lib/opal/cli.rb:62:in `run'
+//   from /Users/elia/Code/opal/exe/opal:24:in `<top (required)>'
+//   from bin/opal:4:in `load'
+//   from bin/opal:4:in `<main>'
+//
+// == Traceback style:
+//
+// Traceback (most recent call last):
+//   6: from bin/opal:4:in `<main>'
+//   5: from bin/opal:4:in `load'
+//   4: from /Users/elia/Code/opal/exe/opal:24:in `<top (required)>'
+//   3: from /Users/elia/Code/opal/lib/opal/cli.rb:62:in `run'
+//   2: from /Users/elia/Code/opal/lib/opal/cli_runners.rb:50:in `block in register_runner'
+//   1: from /Users/elia/Code/opal/lib/opal/cli_runners/nodejs.rb:14:in `call'
+// /Users/elia/Code/opal/lib/opal/cli_runners/system_runner.rb:43:in `call': unhandled exception
diff --git a/lib/opal/cli_runners/system_runner.rb b/lib/opal/cli_runners/system_runner.rb
new file mode 100644
index 00000000..28272243
--- /dev/null
+++ b/lib/opal/cli_runners/system_runner.rb
@@ -0,0 +1,51 @@
+# frozen_string_literal: true
+
+require 'tempfile'
+
+# Generic runner that will resort to calling an external program.
+#
+# @option :options [Hash,nil] :env a hash of options to be used as env in the
+#   call to system.
+# @option :options [true,false] :debug enabling debug mode will write the
+#   compiled JavaScript file in the current working directory.
+# @yield tempfile [File] Gives a file to the block, its #path can be used to
+#   construct the command
+# @yieldreturn command [Array<String>] the command to be used in the system call
+SystemRunner = ->(data, &block) {
+  options  = data[:options] || {}
+  builder  = data.fetch(:builder)
+  output   = data.fetch(:output)
+
+  env      = options.fetch(:env, {})
+  debug    = options.fetch(:debug, false) || RUBY_ENGINE == 'opal'
+
+  code = builder.to_s
+  # Temporary issue with UTF-8, Base64 and source maps
+  code += "\n" + builder.source_map.to_data_uri_comment unless RUBY_ENGINE == 'opal'
+
+  tempfile =
+    if debug
+      File.new('opal-nodejs-runner.js', 'w')
+    else
+      Tempfile.new('opal-system-runner-')
+    end
+
+  tempfile.write code
+  cmd = block.call tempfile
+  tempfile.close
+
+  if RUBY_PLATFORM == 'opal'
+    # Opal doesn't support neither `out:` nor `IO.try_convert` nor `open3`
+    system(env, *cmd)
+    $?.exitstatus
+  elsif IO.try_convert(output) && RUBY_PLATFORM != 'java'
+    system(env, *cmd, out: output)
+    $?.exitstatus
+  else
+    # JRuby (v9.2) doesn't support using `out:` to redirect output.
+    require 'open3'
+    captured_output, status = Open3.capture2(env, *cmd)
+    output.write captured_output
+    status.exitstatus
+  end
+}
diff --git a/lib/opal/compiler.rb b/lib/opal/compiler.rb
new file mode 100644
index 00000000..40189c43
--- /dev/null
+++ b/lib/opal/compiler.rb
@@ -0,0 +1,595 @@
+# frozen_string_literal: true
+
+require 'set'
+require 'opal/parser'
+require 'opal/fragment'
+require 'opal/nodes'
+require 'opal/eof_content'
+require 'opal/errors'
+require 'opal/magic_comments'
+
+module Opal
+  # Compile a string of ruby code into javascript.
+  #
+  # @example
+  #
+  #     Opal.compile "ruby_code"
+  #     # => "string of javascript code"
+  #
+  # @see Opal::Compiler.new for compiler options
+  #
+  # @param source [String] ruby source
+  # @param options [Hash] compiler options
+  # @return [String] javascript code
+  #
+  def self.compile(source, options = {})
+    Compiler.new(source, options).compile
+  end
+
+  # {Opal::Compiler} is the main class used to compile ruby to javascript code.
+  # This class uses {Opal::Parser} to gather the sexp syntax tree for the ruby
+  # code, and then uses {Opal::Node} to step through the sexp to generate valid
+  # javascript.
+  #
+  # @example
+  #   Opal::Compiler.new("ruby code").compile
+  #   # => "javascript code"
+  #
+  # @example Accessing result
+  #   compiler = Opal::Compiler.new("ruby_code")
+  #   compiler.compile
+  #   compiler.result # => "javascript code"
+  #
+  # @example Source Maps
+  #   compiler = Opal::Compiler.new("")
+  #   compiler.compile
+  #   compiler.source_map # => #<SourceMap:>
+  #
+  class Compiler
+    # Generated code gets indented with two spaces on each scope
+    INDENT = '  '
+
+    # All compare method nodes - used to optimize performance of
+    # math comparisons
+    COMPARE = %w[< > <= >=].freeze
+
+    def self.module_name(path)
+      path = File.join(File.dirname(path), File.basename(path).split('.').first)
+      Pathname(path).cleanpath.to_s
+    end
+
+    # Defines a compiler option.
+    # @option as: [Symbol] uses a different method name, e.g. with a question mark for booleans
+    # @option default: [Object] the default value for the option
+    # @option magic_comment: [Bool] allows magic-comments to override the option value
+    def self.compiler_option(name, config = {})
+      method_name = config.fetch(:as, name)
+      define_method(method_name) { option_value(name, config) }
+    end
+
+    # Fetches and memoizes the value for an option.
+    def option_value(name, config)
+      return @option_values[name] if @option_values.key? name
+
+      default_value = config[:default]
+      valid_values  = config[:valid_values]
+      magic_comment = config[:magic_comment]
+
+      value = @options.fetch(name, default_value)
+
+      if magic_comment && @magic_comments.key?(name)
+        value = @magic_comments.fetch(name)
+      end
+
+      if valid_values && !valid_values.include?(value)
+        raise(
+          ArgumentError,
+          "invalid value #{value.inspect} for option #{name.inspect} " \
+          "(valid values: #{valid_values.inspect})"
+        )
+      end
+
+      @option_values[name] = value
+    end
+
+    # @!method file
+    #
+    # The filename to use for compiling this code. Used for __FILE__ directives
+    # as well as finding relative require()
+    #
+    # @return [String]
+    compiler_option :file, default: '(file)'
+
+    # @!method method_missing?
+    #
+    # adds method stubs for all used methods in file
+    #
+    # @return [Boolean]
+    compiler_option :method_missing, default: true, as: :method_missing?
+
+    # @!method arity_check?
+    #
+    # adds an arity check to every method definition
+    #
+    # @return [Boolean]
+    compiler_option :arity_check, default: false, as: :arity_check?
+
+    # @deprecated
+    # @!method freezing?
+    #
+    # stubs out #freeze and #frozen?
+    #
+    # @return [Boolean]
+    compiler_option :freezing, default: true, as: :freezing?
+
+    # @!method irb?
+    #
+    # compile top level local vars with support for irb style vars
+    compiler_option :irb, default: false, as: :irb?
+
+    # @!method dynamic_require_severity
+    #
+    # how to handle dynamic requires (:error, :warning, :ignore)
+    compiler_option :dynamic_require_severity, default: :ignore, valid_values: %i[error warning ignore]
+
+    # @!method requirable?
+    #
+    # Prepare the code for future requires
+    compiler_option :requirable, default: false, as: :requirable?
+
+    # @!method esm?
+    #
+    # Wrap compiler result as self contained ES6 module
+    compiler_option :esm, default: false, as: :esm?
+
+    # @!method inline_operators?
+    #
+    # are operators compiled inline
+    compiler_option :inline_operators, default: true, as: :inline_operators?
+
+    compiler_option :eval, default: false, as: :eval?
+
+    # @!method enable_source_location?
+    #
+    # Adds source_location for every method definition
+    compiler_option :enable_source_location, default: false, as: :enable_source_location?
+
+    # @!method use_strict?
+    #
+    # Enables JavaScript's strict mode (i.e., adds 'use strict'; statement)
+    compiler_option :use_strict, default: false, as: :use_strict?, magic_comment: true
+
+    # @!method parse_comments?
+    #
+    # Adds comments for every method definition
+    compiler_option :parse_comments, default: false, as: :parse_comments?
+
+    compiler_option :scope_variables, default: []
+
+    # @!method async_await
+    #
+    # Enable async/await support and optionally enable auto-await.
+    #
+    # Use either true, false, an Array of Symbols, a String containing names
+    # to auto-await separated by a comma or a Regexp.
+    #
+    # Auto-await awaits provided methods by default as if .__await__ was added to
+    # them automatically.
+    #
+    # By default, the support is disabled (set to false).
+    #
+    # If the config value is not set to false, any calls to #__await__ will be
+    # translated to ES8 await keyword which makes the scope return a Promise
+    # and a containing scope will be async (instead of a value, it will return
+    # a Promise).
+    #
+    # If the config value is an array, or a String separated by a comma,
+    # auto-await is also enabled.
+    #
+    # A member of this collection can contain a wildcard character * in which
+    # case all methods containing a given substring will be awaited.
+    #
+    # It can be used as a magic comment, examples:
+    # ```
+    # # await: true
+    # # await: *await*
+    # # await: *await*, sleep, gets
+    compiler_option :await, default: false, as: :async_await, magic_comment: true
+
+    # @return [String] The compiled ruby code
+    attr_reader :result
+
+    # @return [Array] all [Opal::Fragment] used to produce result
+    attr_reader :fragments
+
+    # Current scope
+    attr_accessor :scope
+
+    # Top scope
+    attr_accessor :top_scope
+
+    # Current case_stmt
+    attr_reader :case_stmt
+
+    # Any content in __END__ special construct
+    attr_reader :eof_content
+
+    # Comments from the source code
+    attr_reader :comments
+
+    # Magic comment flags extracted from the leading comments
+    attr_reader :magic_comments
+
+    # Set if some rewritter caused a dynamic cache result, meaning it's not
+    # fit to be cached
+    attr_accessor :dynamic_cache_result
+
+    def initialize(source, options = {})
+      @source = source
+      @indent = ''
+      @unique = 0
+      @options = options
+      @comments = Hash.new([])
+      @case_stmt = nil
+      @option_values = {}
+      @magic_comments = {}
+      @dynamic_cache_result = false
+    end
+
+    # Compile some ruby code to a string.
+    #
+    # @return [String] javascript code
+    def compile
+      parse
+
+      @fragments = re_raise_with_location { process(@sexp).flatten }
+      @fragments << fragment("\n", nil, s(:newline)) unless @fragments.last.code.end_with?("\n")
+
+      @result = @fragments.map(&:code).join('')
+    end
+
+    def parse
+      @buffer = ::Opal::Parser::SourceBuffer.new(file, 1)
+      @buffer.source = @source
+
+      @parser = Opal::Parser.default_parser
+
+      sexp, comments, tokens = re_raise_with_location { @parser.tokenize(@buffer) }
+
+      kind = case
+             when requirable?
+               :require
+             when eval?
+               :eval
+             else
+               :main
+             end
+
+      @sexp = sexp.tap { |i| i.meta[:kind] = kind }
+
+      first_node = sexp.children.first if sexp.children.first.location
+
+      @comments = ::Parser::Source::Comment.associate_locations(first_node, comments)
+      @magic_comments = MagicComments.parse(first_node, comments)
+      @eof_content = EofContent.new(tokens, @source).eof
+    end
+
+    # Returns a source map that can be used in the browser to map back to
+    # original ruby code.
+    #
+    # @param source_file [String] optional source_file to reference ruby source
+    # @return [Opal::SourceMap]
+    def source_map
+      # We only use @source_map if compiler is cached.
+      @source_map || ::Opal::SourceMap::File.new(@fragments, file, @source, @result)
+    end
+
+    # Any helpers required by this file. Used by {Opal::Nodes::Top} to reference
+    # runtime helpers that are needed. These are used to minify resulting
+    # javascript by keeping a reference to helpers used.
+    #
+    # @return [Set<Symbol>]
+    def helpers
+      @helpers ||= Set.new(
+        magic_comments[:helpers].to_s.split(',').map { |h| h.strip.to_sym }
+      )
+    end
+
+    # Method calls made in this file
+    def method_calls
+      @method_calls ||= Set.new
+    end
+
+    alias async_await_before_typecasting async_await
+    def async_await
+      if defined? @async_await
+        @async_await
+      else
+        original = async_await_before_typecasting
+        @async_await = case original
+                       when String
+                         async_await_set_to_regexp(original.split(',').map { |h| h.strip.to_sym })
+                       when Array, Set
+                         async_await_set_to_regexp(original.to_a.map(&:to_sym))
+                       when Regexp, true, false
+                         original
+                       else
+                         raise 'A value of await compiler option can be either ' \
+                               'a Set, an Array, a String or a Boolean.'
+                       end
+      end
+    end
+
+    def async_await_set_to_regexp(set)
+      set = set.map { |name| Regexp.escape(name.to_s).gsub('\*', '.*?') }
+      set = set.join('|')
+      /^(#{set})$/
+    end
+
+    # This is called when a parsing/processing error occurs. This
+    # method simply appends the filename and curent line number onto
+    # the message and raises it.
+    def error(msg, line = nil)
+      error = ::Opal::SyntaxError.new(msg)
+      error.location = Opal::OpalBacktraceLocation.new(file, line)
+      raise error
+    end
+
+    def re_raise_with_location
+      yield
+    rescue StandardError, ::Opal::SyntaxError => error
+      opal_location = ::Opal.opal_location_from_error(error)
+      opal_location.path = file
+      opal_location.label ||= @source.lines[opal_location.line.to_i - 1].strip
+      new_error = ::Opal::SyntaxError.new(error.message)
+      new_error.set_backtrace error.backtrace
+      ::Opal.add_opal_location_to_error(opal_location, new_error)
+      raise new_error
+    end
+
+    # This is called when a parsing/processing warning occurs. This
+    # method simply appends the filename and curent line number onto
+    # the message and issues a warning.
+    def warning(msg, line = nil)
+      warn "warning: #{msg} -- #{file}:#{line}"
+    end
+
+    # Instances of `Scope` can use this to determine the current
+    # scope indent. The indent is used to keep generated code easily
+    # readable.
+    def parser_indent
+      @indent
+    end
+
+    # Create a new sexp using the given parts.
+    def s(type, *children)
+      ::Opal::AST::Node.new(type, children)
+    end
+
+    def fragment(str, scope, sexp = nil)
+      Fragment.new(str, scope, sexp)
+    end
+
+    # Used to generate a unique id name per file. These are used
+    # mainly to name method bodies for methods that use blocks.
+    def unique_temp(name)
+      name = name.to_s
+      if name && !name.empty?
+        name = name
+               .to_s
+               .gsub('<=>', '$lt_eq_gt')
+               .gsub('===', '$eq_eq_eq')
+               .gsub('==', '$eq_eq')
+               .gsub('=~', '$eq_tilde')
+               .gsub('!~', '$excl_tilde')
+               .gsub('!=', '$not_eq')
+               .gsub('<=', '$lt_eq')
+               .gsub('>=', '$gt_eq')
+               .gsub('=', '$eq')
+               .gsub('?', '$ques')
+               .gsub('!', '$excl')
+               .gsub('/', '$slash')
+               .gsub('%', '$percent')
+               .gsub('+', '$plus')
+               .gsub('-', '$minus')
+               .gsub('<', '$lt')
+               .gsub('>', '$gt')
+               .gsub(/[^\w\$]/, '$')
+      end
+      unique = (@unique += 1)
+      "#{'$' unless name.start_with?('$')}#{name}$#{unique}"
+    end
+
+    # Use the given helper
+    def helper(name)
+      helpers << name
+    end
+
+    # To keep code blocks nicely indented, this will yield a block after
+    # adding an extra layer of indent, and then returning the resulting
+    # code after reverting the indent.
+    def indent
+      indent = @indent
+      @indent += INDENT
+      @space = "\n#{@indent}"
+      res = yield
+      @indent = indent
+      @space = "\n#{@indent}"
+      res
+    end
+
+    # Temporary varibales will be needed from time to time in the
+    # generated code, and this method will assign (or reuse) on
+    # while the block is yielding, and queue it back up once it is
+    # finished. Variables are queued once finished with to save the
+    # numbers of variables needed at runtime.
+    def with_temp
+      tmp = @scope.new_temp
+      res = yield tmp
+      @scope.queue_temp tmp
+      res
+    end
+
+    # Used when we enter a while statement. This pushes onto the current
+    # scope's while stack so we know how to handle break, next etc.
+    def in_while
+      return unless block_given?
+      @while_loop = @scope.push_while
+      result = yield
+      @scope.pop_while
+      result
+    end
+
+    def in_case
+      return unless block_given?
+      old = @case_stmt
+      @case_stmt = {}
+      yield
+      @case_stmt = old
+    end
+
+    # Returns true if the parser is curently handling a while sexp,
+    # false otherwise.
+    def in_while?
+      @scope.in_while?
+    end
+
+    # Process the given sexp by creating a node instance, based on its type,
+    # and compiling it to fragments.
+    def process(sexp, level = :expr)
+      return fragment('', scope) if sexp.nil?
+
+      if handler = handlers[sexp.type]
+        return handler.new(sexp, level, self).compile_to_fragments
+      else
+        error "Unsupported sexp: #{sexp.type}"
+      end
+    end
+
+    def handlers
+      @handlers ||= Opal::Nodes::Base.handlers
+    end
+
+    # An array of requires used in this file
+    def requires
+      @requires ||= []
+    end
+
+    # An array of trees required in this file
+    # (typically by calling #require_tree)
+    def required_trees
+      @required_trees ||= []
+    end
+
+    # An array of things (requires, trees) which don't need to success in
+    # loading compile-time.
+    def autoloads
+      @autoloads ||= []
+    end
+
+    # The last sexps in method bodies, for example, need to be returned
+    # in the compiled javascript. Due to syntax differences between
+    # javascript any ruby, some sexps need to be handled specially. For
+    # example, `if` statemented cannot be returned in javascript, so
+    # instead the "truthy" and "falsy" parts of the if statement both
+    # need to be returned instead.
+    #
+    # Sexps that need to be returned are passed to this method, and the
+    # alterned/new sexps are returned and should be used instead. Most
+    # sexps can just be added into a `s(:return) sexp`, so that is the
+    # default action if no special case is required.
+    def returns(sexp)
+      return returns s(:nil) unless sexp
+
+      case sexp.type
+      when :undef
+        # undef :method_name always returns nil
+        returns sexp.updated(:begin, [sexp, s(:nil)])
+      when :break, :next, :redo, :retry
+        sexp
+      when :yield
+        sexp.updated(:returnable_yield, nil)
+      when :when
+        *when_sexp, then_sexp = *sexp
+        sexp.updated(nil, [*when_sexp, returns(then_sexp)])
+      when :rescue
+        body_sexp, *resbodies, else_sexp = *sexp
+
+        resbodies = resbodies.map do |resbody|
+          returns(resbody)
+        end
+
+        if else_sexp
+          else_sexp = returns(else_sexp)
+        end
+
+        sexp.updated(
+          nil, [
+            returns(body_sexp),
+            *resbodies,
+            else_sexp
+          ]
+        )
+      when :resbody
+        klass, lvar, body = *sexp
+        sexp.updated(nil, [klass, lvar, returns(body)])
+      when :ensure
+        rescue_sexp, ensure_body = *sexp
+        sexp = sexp.updated(nil, [returns(rescue_sexp), ensure_body])
+        sexp.updated(:js_return, [sexp])
+      when :begin, :kwbegin
+        # Wrapping last expression with s(:js_return, ...)
+        *rest, last = *sexp
+        sexp.updated(nil, [*rest, returns(last)])
+      when :while, :until, :while_post, :until_post
+        sexp
+      when :return, :js_return, :returnable_yield
+        sexp
+      when :xstr
+        sexp.updated(nil, [s(:js_return, *sexp.children)])
+      when :if
+        cond, true_body, false_body = *sexp
+        sexp.updated(
+          nil, [
+            cond,
+            returns(true_body),
+            returns(false_body)
+          ]
+        )
+      else
+        if sexp.type == :send && sexp.children[1] == :debugger
+          # debugger is a statement, so it doesn't return a value
+          # and returning it is invalid. Therefore we update it
+          # to do `debugger; return nil`.
+          sexp.updated(:begin, [sexp, s(:js_return, s(:nil))])
+        else
+          sexp.updated(:js_return, [sexp])
+        end
+      end
+    end
+
+    def handle_block_given_call(sexp)
+      @scope.uses_block!
+      if @scope.block_name
+        fragment("(#{@scope.block_name} !== nil)", scope, sexp)
+      elsif (scope = @scope.find_parent_def) && scope.block_name
+        fragment("(#{scope.block_name} !== nil)", scope, sexp)
+      else
+        fragment('false', scope, sexp)
+      end
+    end
+
+    # Marshalling for cache shortpath
+    def marshal_dump
+      [@options, @option_values, @source_map ||= source_map.cache,
+       @magic_comments, @result,
+       @required_trees, @requires, @autoloads]
+    end
+
+    def marshal_load(src)
+      @options, @option_values, @source_map,
+      @magic_comments, @result,
+      @required_trees, @requires, @autoloads = src
+    end
+  end
+end
diff --git a/lib/opal/config.rb b/lib/opal/config.rb
new file mode 100644
index 00000000..50c5019c
--- /dev/null
+++ b/lib/opal/config.rb
@@ -0,0 +1,149 @@
+# frozen_string_literal: true
+
+require 'set'
+
+module Opal
+  module Config
+    extend self
+
+    private
+
+    def config_options
+      @config_options ||= {}
+    end
+
+    # Defines a new configuration option
+    #
+    # @param [String] name the option name
+    # @param [Object] default_value the option's default value
+    # @!macro [attach] property
+    #   @!attribute [rw] $1
+    def config_option(name, default_value, options = {})
+      compiler      = options.fetch(:compiler_option, nil)
+      valid_values  = options.fetch(:valid_values, [true, false])
+
+      config_options[name] = {
+        default: default_value,
+        compiler: compiler
+      }
+
+      define_singleton_method(name) { config.fetch(name, default_value) }
+      define_singleton_method("#{name}=") do |value|
+        unless valid_values.any? { |valid_value| valid_value === value }
+          raise ArgumentError, "Not a valid value for option #{self}.#{name}, provided #{value.inspect}. "\
+                               "Must be #{valid_values.inspect} === #{value.inspect}"
+        end
+
+        config[name] = value
+      end
+    end
+
+    public
+
+    # @return [Hash] the default configuration
+    def default_config
+      default_config = {}
+      config_options.each do |name, options|
+        default_value = options.fetch(:default)
+        default_value = Proc === default_value ? default_value.call : default_value
+        default_config[name] = default_value
+      end
+      default_config
+    end
+
+    # @return [Hash] the configuration for Opal::Compiler
+    def compiler_options
+      compiler_options = {}
+      config_options.each do |name, options|
+        compiler_option_name = options.fetch(:compiler)
+        compiler_options[compiler_option_name] = config.fetch(name)
+      end
+      compiler_options
+    end
+
+    # @return [Hash] the current configuration, defaults to #default_config
+    def config
+      @config ||= default_config
+    end
+
+    # Resets the config to its default value
+    #
+    # @return [void]
+    def reset!
+      @config = nil
+    end
+
+    # Enable method_missing support.
+    #
+    # @return [true, false]
+    config_option :method_missing_enabled, true, compiler_option: :method_missing
+
+    # Enable const_missing support.
+    #
+    # @return [true, false]
+    config_option :const_missing_enabled, true, compiler_option: :const_missing
+
+    # Enable arity check on the arguments passed to methods, procs and lambdas.
+    #
+    # @return [true, false]
+    config_option :arity_check_enabled, false, compiler_option: :arity_check
+
+    # Add stubs for methods related to freezing objects (for compatibility).
+    #
+    # @return [true, false]
+    config_option :freezing_stubs_enabled, true, compiler_option: :freezing
+
+    # Build ECMAScript modules, instead of legacy JS
+    #
+    # @return [true, false]
+    config_option :esm, false, compiler_option: :esm
+
+    # Set the error severity for when a require can't be parsed at compile time.
+    #
+    # @example
+    #   # Opal code
+    #   require "foo" + some_dynamic_value
+    #
+    # - `:error` will raise an error at compile time
+    # - `:warning` will print a warning on stderr at compile time
+    # - `:ignore` will skip the require silently at compile time
+    #
+    # @return [:error, :warning, :ignore]
+    config_option :dynamic_require_severity, :warning, compiler_option: :dynamic_require_severity, valid_values: %i[error warning ignore]
+
+    # Set the error severity for when a required file can't be found at build time.
+    #
+    # @example
+    #   # Opal code
+    #   require "some_non_existen_file"
+    #
+    # - `:error` will raise an error at compile time
+    # - `:warning` will print a warning on stderr at compile time
+    # - `:ignore` will skip the require silently at compile time
+    #
+    # @return [:error, :warning, :ignore]
+    config_option :missing_require_severity, :error, valid_values: %i[error warning ignore]
+
+    # Enable IRB support for making local variables across multiple compilations.
+    #
+    # @return [true, false]
+    config_option :irb_enabled, false, compiler_option: :irb
+
+    # Enable for inline operators optimizations.
+    #
+    # @return [true, false]
+    config_option :inline_operators_enabled, true, compiler_option: :inline_operators
+
+    # Enable source maps support.
+    #
+    # @return [true, false]
+    config_option :source_map_enabled, true
+
+    # A set of stubbed files that will be marked as loaded and skipped during
+    # compilation. The value is expected to be mutated but it's ok to replace
+    # it.
+    #
+    # @return [Set]
+    config_option :stubbed_files, -> { Set.new }, valid_values: [Set]
+  end
+end
diff --git a/lib/opal/deprecations.rb b/lib/opal/deprecations.rb
new file mode 100644
index 00000000..efec3e5c
--- /dev/null
+++ b/lib/opal/deprecations.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+module Opal
+  module Deprecations
+    attr_accessor :raise_on_deprecation
+
+    def deprecation(message)
+      message = "DEPRECATION WARNING: #{message}"
+      if defined?(@raise_on_deprecation) && @raise_on_deprecation
+        raise message
+      else
+        warn message
+      end
+    end
+  end
+
+  extend Deprecations
+  self.raise_on_deprecation = false
+end
diff --git a/lib/opal/eof_content.rb b/lib/opal/eof_content.rb
new file mode 100644
index 00000000..cf00a8d0
--- /dev/null
+++ b/lib/opal/eof_content.rb
@@ -0,0 +1,36 @@
+# frozen_string_literal: true
+
+module Opal
+  class EofContent
+    DATA_SEPARATOR = "__END__\n"
+
+    def initialize(tokens, source)
+      @tokens = tokens
+      @source = source
+    end
+
+    def eof
+      return nil if @tokens.empty?
+
+      eof_content = @source[last_token_position..-1]
+      return nil unless eof_content
+
+      eof_content = eof_content.lines.drop_while { |line| line == "\n" }
+
+      if eof_content[0] == "__END__\n"
+        eof_content = eof_content[1..-1] || []
+        eof_content.join
+      elsif eof_content == ['__END__']
+        ''
+      end
+    end
+
+    private
+
+    def last_token_position
+      _, last_token_info = @tokens.last
+      _, last_token_range = last_token_info
+      last_token_range.end_pos
+    end
+  end
+end
diff --git a/lib/opal/erb.rb b/lib/opal/erb.rb
new file mode 100644
index 00000000..ef019535
--- /dev/null
+++ b/lib/opal/erb.rb
@@ -0,0 +1,87 @@
+# frozen_string_literal: true
+
+require 'opal/compiler'
+
+module Opal
+  module ERB
+    # Compile ERB code into javascript.
+    #
+    # [Opal::ERB] can be used to compile [ERB] templates into javascript code.
+    # This module uses the [Opal::Compiler] internally.
+    #
+    # Compiled templates, when run in a javascript environment, will appear
+    # under the `Template` namespace, and can be accessed as:
+    #
+    #     Template['template_name'] # => template instance
+    #
+    # @example
+    #
+    #     source = "<div><%= @content %></div>"
+    #
+    #     Opal::ERB.compile source, "my_template.erb"
+    #
+    # @param source [String] erb content
+    # @param file_name [String] filename for reference in template
+    # @return [String] javascript code
+    #
+    def self.compile(source, file_name = '(erb)')
+      Compiler.new(source, file_name).compile
+    end
+
+    class Compiler
+      BLOCK_EXPR = /\s+(do|\{)(\s*\|[^|]*\|)?\s*\Z/.freeze
+
+      def initialize(source, file_name = '(erb)')
+        @source, @file_name, @result = source, file_name, source
+      end
+
+      def prepared_source
+        @prepared_source ||= begin
+          source = @source
+          source = fix_quotes(source)
+          source = find_contents(source)
+          source = find_code(source)
+          source = wrap_compiled(source)
+          source = require_erb(source)
+          source
+        end
+      end
+
+      def compile
+        Opal.compile prepared_source
+      end
+
+      def fix_quotes(result)
+        result.gsub '"', '\\"'
+      end
+
+      def require_erb(result)
+        'require "erb";' + result
+      end
+
+      def find_contents(result)
+        result.gsub(/<%=([\s\S]+?)%>/) do
+          inner = Regexp.last_match(1).gsub(/\\'/, "'").gsub(/\\"/, '"')
+
+          if inner =~ BLOCK_EXPR
+            "\")\noutput_buffer.append= #{inner}\noutput_buffer.append(\""
+          else
+            "\")\noutput_buffer.append=(#{inner})\noutput_buffer.append(\""
+          end
+        end
+      end
+
+      def find_code(result)
+        result.gsub(/<%([\s\S]+?)%>/) do
+          inner = Regexp.last_match(1).gsub(/\\"/, '"')
+          "\")\n#{inner}\noutput_buffer.append(\""
+        end
+      end
+
+      def wrap_compiled(result)
+        path = @file_name.sub(/\.opalerb#{REGEXP_END}/, '')
+        "Template.new('#{path}') do |output_buffer|\noutput_buffer.append(\"#{result}\")\noutput_buffer.join\nend\n"
+      end
+    end
+  end
+end
diff --git a/lib/opal/errors.rb b/lib/opal/errors.rb
new file mode 100644
index 00000000..24a9da5e
--- /dev/null
+++ b/lib/opal/errors.rb
@@ -0,0 +1,85 @@
+# frozen_string_literal: true
+
+module Opal
+  # Generic Opal error
+  class Error < StandardError
+  end
+
+  # raised if Gem not found in Opal#use_gem
+  class GemNotFound < Error
+    # name of gem that not found
+    attr_reader :gem_name
+
+    # @param gem_name [String] name of gem that not found
+    def initialize(gem_name)
+      @gem_name = gem_name
+      super("can't find gem #{gem_name}")
+    end
+  end
+
+  class CompilationError < Error
+    attr_accessor :location
+  end
+
+  class ParsingError < CompilationError
+  end
+
+  class RewritingError < ParsingError
+  end
+
+  class SyntaxError < ::SyntaxError
+    attr_accessor :location
+  end
+
+  def self.opal_location_from_error(error)
+    opal_location = OpalBacktraceLocation.new
+    opal_location.location = error.location if error.respond_to?(:location)
+    opal_location.diagnostic = error.diagnostic if error.respond_to?(:diagnostic)
+    opal_location
+  end
+
+  def self.add_opal_location_to_error(opal_location, error)
+    backtrace = error.backtrace.to_a
+    backtrace.unshift opal_location.to_s
+    error.set_backtrace backtrace
+    error
+  end
+
+  # Loosely compatible with Thread::Backtrace::Location
+  class OpalBacktraceLocation
+    attr_accessor :path, :lineno, :label
+
+    def initialize(path = nil, lineno = nil, label = nil)
+      @path, @lineno, @label = path, lineno, label
+    end
+
+    def to_s
+      string = path
+      string += ":#{lineno}" if lineno
+      string += ':in '
+      if label
+        string += "`#{label}'"
+      else
+        string += 'unknown'
+      end
+      string
+    end
+
+    alias line lineno
+
+    def diagnostic=(diagnostic)
+      return unless diagnostic
+      self.location = diagnostic.location
+    end
+
+    def location=(location)
+      return unless location
+      self.lineno = location.line
+      if location.respond_to?(:source_line)
+        self.label = location.source_line
+      elsif location.respond_to?(:expression)
+        self.label = location.expression.source_line
+      end
+    end
+  end
+end
diff --git a/lib/opal/fragment.rb b/lib/opal/fragment.rb
new file mode 100644
index 00000000..335c756f
--- /dev/null
+++ b/lib/opal/fragment.rb
@@ -0,0 +1,135 @@
+# frozen_string_literal: true
+
+module Opal
+  # A fragment holds a string of generated javascript that will be written
+  # to the destination. It also keeps hold of the original sexp from which
+  # it was generated. Using this sexp, when writing fragments in order, a
+  # mapping can be created of the original location => target location,
+  # aka, source-maps!
+  #
+  # These are generated by nodes, so will not have to create directly.
+  class Fragment
+    # String of javascript this fragment holds
+    # @return [String]
+    attr_reader :code
+
+    # Create fragment with javascript code and optional original [Opal::Sexp].
+    #
+    # @param code [String] javascript code
+    # @param sexp [Opal::Sexp] sexp used for creating fragment
+    def initialize(code, scope, sexp = nil)
+      @code = code.to_s
+      @sexp = sexp
+      @scope = scope
+    end
+
+    # Inspect the contents of this fragment, f("fooo")
+    def inspect
+      "f(#{@code.inspect})"
+    end
+
+    def source_map_name_for(sexp)
+      case sexp.type
+      when :top
+        case sexp.meta[:kind]
+        when :require
+          '<top (required)>'
+        when :eval
+          '(eval)'
+        when :main
+          '<main>'
+        end
+      when :begin, :newline, :js_return
+        source_map_name_for(@scope.sexp) if @scope
+      when :iter
+        scope = @scope
+        iters = 1
+        while scope
+          if scope.class == Nodes::IterNode
+            iters += 1
+            scope = scope.parent
+          else
+            break
+          end
+        end
+        level = " (#{iters} levels)" if iters > 1
+        "block#{level} in #{source_map_name_for(scope.sexp)}"
+      when :self
+        'self'
+      when :module
+        const, = *sexp
+        "<module:#{source_map_name_for(const)}>"
+      when :class
+        const, = *sexp
+        "<class:#{source_map_name_for(const)}>"
+      when :const
+        scope, name = *sexp
+        if !scope || scope.type == :cbase
+          name.to_s
+        else
+          "#{source_map_name_for(scope)}::#{name}"
+        end
+      when :int
+        sexp.children.first
+      when :def
+        sexp.children.first
+      when :defs
+        sexp.children[1]
+      when :send
+        sexp.children[1]
+      when :lvar, :lvasgn, :lvdeclare, :ivar, :ivasgn, :gvar, :cvar, :cvasgn, :gvars, :gvasgn, :arg
+        sexp.children.first
+      when :str, :xstr # Inside xstr - JS calls
+        source_map_name_for(@scope.sexp)
+      else
+        # nil
+      end
+    end
+
+    def source_map_name
+      return nil unless @sexp
+
+      source_map_name_for(@sexp)
+    end
+
+    def location
+      case
+      when !@sexp
+        nil
+      when @sexp.type == :send
+        loc = @sexp.loc
+        if loc.respond_to? :dot # a>.b || a>+b / >a / a>[b]
+          loc.dot || loc.selector
+        elsif loc.respond_to? :operator # a >|= b
+          loc.operator
+        else
+          @sexp
+        end
+      when @sexp.type == :iter
+        if loc.respond_to? :begin
+          @sexp.loc.begin # [1,2].each >{ }
+        else
+          @sexp
+        end
+      else
+        @sexp
+      end
+    end
+
+    # Original line this fragment was created from
+    # @return [Integer, nil]
+    def line
+      location&.line
+    end
+
+    # Original column this fragment was created from
+    # @return [Integer, nil]
+    def column
+      location&.column
+    end
+
+    def skip_source_map?
+      @sexp == false
+    end
+  end
+end
diff --git a/lib/opal/hike.rb b/lib/opal/hike.rb
new file mode 100644
index 00000000..68dd5039
--- /dev/null
+++ b/lib/opal/hike.rb
@@ -0,0 +1,305 @@
+# frozen_string_literal: true
+
+# Copyright (c) 2011 Sam Stephenson
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+require 'pathname'
+
+module Opal
+  # Taken from hike v1.2.3
+  module Hike
+    # `Index` is an internal cached variant of `Trail`. It assumes the
+    # file system does not change between `find` calls. All `stat` and
+    # `entries` calls are cached for the lifetime of the `Index` object.
+    class Index
+      # `Index#paths` is an immutable collection of `Pathname`s.
+      attr_reader :paths
+
+      # `Index#extensions` is an immutable collection of extensions.
+      attr_reader :extensions
+
+      # `Index.new` is an internal method. Instead of constructing it
+      # directly, create a `Trail` and call `Trail#index`.
+      def initialize(root, paths, extensions)
+        @root = root
+
+        # Freeze is used here so an error is throw if a mutator method
+        # is called on the array. Mutating `@paths`, `@extensions`
+        # would have unpredictable results.
+        @paths      = paths.dup.freeze
+        @extensions = extensions.dup.freeze
+        @pathnames  = paths.map { |path| Pathname.new(path) }
+
+        @stats    = {}
+        @entries  = {}
+        @patterns = {}
+      end
+
+      # `Index#root` returns root path as a `String`. This attribute is immutable.
+      def root
+        @root.to_s
+      end
+
+      # `Index#index` returns `self` to be compatable with the `Trail` interface.
+      def index
+        self
+      end
+
+      # The real implementation of `find`. `Trail#find` generates a one
+      # time index and delegates here.
+      #
+      # See `Trail#find` for usage.
+      def find(logical_path)
+        base_path = Pathname.new(@root)
+        logical_path = Pathname.new(logical_path.sub(/^\//, ''))
+
+        if logical_path.to_s =~ %r{^\.\.?/}
+          find_in_base_path(logical_path, base_path) { |path| return path }
+        else
+          find_in_paths(logical_path) { |path| return path }
+        end
+
+        nil
+      end
+
+      # A cached version of `Dir.entries` that filters out `.` files and
+      # `~` swap files. Returns an empty `Array` if the directory does
+      # not exist.
+      def entries(path)
+        @entries[path.to_s] ||= begin
+          pathname = Pathname.new(path)
+          if pathname.directory?
+            pathname.entries.reject { |entry| entry.to_s =~ /^\.|~$|^\#.*\#$/ }.sort
+          else
+            []
+          end
+        end
+      end
+
+      # A cached version of `File.stat`. Returns nil if the file does
+      # not exist.
+      def stat(path)
+        key = path.to_s
+        if @stats.key?(key)
+          @stats[key]
+        elsif File.exist?(path)
+          @stats[key] = File.stat(path)
+        else
+          @stats[key] = nil
+        end
+      end
+
+      protected
+
+      def extract_options!(arguments)
+        arguments.last.is_a?(Hash) ? arguments.pop.dup : {}
+      end
+
+      # Finds logical path across all `paths`
+      def find_in_paths(logical_path, &block)
+        dirname, basename = logical_path.split
+        @pathnames.each do |base_path|
+          match(base_path.join(dirname), basename, &block)
+        end
+      end
+
+      # Finds relative logical path, `../test/test_trail`. Requires a
+      # `base_path` for reference.
+      def find_in_base_path(logical_path, base_path, &block)
+        candidate = base_path.join(logical_path)
+        dirname, basename = candidate.split
+        match(dirname, basename, &block) if paths_contain?(dirname)
+      end
+
+      # Checks if the path is actually on the file system and performs
+      # any syscalls if necessary.
+      def match(dirname, basename)
+        # Potential `entries` syscall
+        matches = entries(dirname)
+
+        pattern = pattern_for(basename)
+        matches = matches.select { |m| m.to_s =~ pattern }
+
+        sort_matches(matches, basename).each do |path|
+          pathname = dirname.join(path)
+
+          # Potential `stat` syscall
+          stat = stat(pathname)
+
+          # Exclude directories
+          if stat && stat.file?
+            yield pathname.to_s
+          end
+        end
+      end
+
+      # Returns true if `dirname` is a subdirectory of any of the `paths`
+      def paths_contain?(dirname)
+        paths.any? { |path| dirname.to_s[0, path.length] == path }
+      end
+
+      # Cache results of `build_pattern_for`
+      def pattern_for(basename)
+        @patterns[basename] ||= build_pattern_for(basename)
+      end
+
+      # Returns a `Regexp` that matches the allowed extensions.
+      #
+      #     pattern_for("index.html") #=> /^index(.html|.htm)(.builder|.erb)*$/
+      def build_pattern_for(basename)
+        extension_pattern = extensions.map { |e| Regexp.escape(e) }.join('|')
+        /^#{basename}(?:#{extension_pattern})*$/
+      end
+
+      # Sorts candidate matches by their extension
+      # priority. Extensions in the front of the `extensions` carry
+      # more weight.
+      def sort_matches(matches, basename)
+        matches.sort_by do |match|
+          extnames = match.sub(basename.to_s, '').to_s.scan(/\.[^.]+/)
+          extnames.inject(0) do |sum, ext|
+            index = extensions.index(ext)
+            if index
+              sum + index + 1
+            else
+              sum
+            end
+          end
+        end
+      end
+    end
+
+    # `Trail` is the public container class for holding paths and extensions.
+    class Trail
+      # `Trail#paths` is a mutable `Paths` collection.
+      #
+      #     trail = Hike::Trail.new
+      #     trail.paths.push "~/Projects/hike/lib", "~/Projects/hike/test"
+      #
+      # The order of the paths is significant. Paths in the beginning of
+      # the collection will be checked first. In the example above,
+      # `~/Projects/hike/lib/hike.rb` would shadow the existent of
+      # `~/Projects/hike/test/hike.rb`.
+      attr_reader :paths
+
+      # `Trail#extensions` is a mutable `Extensions` collection.
+      #
+      #     trail = Hike::Trail.new
+      #     trail.paths.push "~/Projects/hike/lib"
+      #     trail.extensions.push ".rb"
+      #
+      # Extensions allow you to find files by just their name omitting
+      # their extension. Is similar to Ruby's require mechanism that
+      # allows you to require files with specifiying `foo.rb`.
+      attr_reader :extensions
+
+      # A Trail accepts an optional root path that defaults to your
+      # current working directory. Any relative paths added to
+      # `Trail#paths` will expanded relative to the root.
+      def initialize(root = '.')
+        @root       = Pathname.new(root).expand_path
+        @paths      = []
+        @extensions = []
+      end
+
+      # `Trail#root` returns root path as a `String`. This attribute is immutable.
+      def root
+        @root.to_s
+      end
+
+      # Append `path` to `Paths` collection
+      def append_paths(*paths)
+        @paths.concat(paths.map { |p| normalize_path(p) })
+      end
+
+      # Append `extension` to `Extensions` collection
+      def append_extensions(*extensions)
+        @extensions.concat(extensions.map { |e| normalize_extension(e) })
+      end
+
+      # `Trail#find` returns a the expand path for a logical path in the
+      # path collection.
+      #
+      #     trail = Hike::Trail.new "~/Projects/hike"
+      #     trail.extensions.push ".rb"
+      #     trail.paths.push "lib", "test"
+      #
+      #     trail.find "hike/trail"
+      #     # => "~/Projects/hike/lib/hike/trail.rb"
+      #
+      #     trail.find "test_trail"
+      #     # => "~/Projects/hike/test/test_trail.rb"
+      #
+      def find(*args, &block)
+        index.find(*args, &block)
+      end
+
+      # `Trail#index` returns an `Index` object that has the same
+      # interface as `Trail`. An `Index` is a cached `Trail` object that
+      # does not update when the file system changes. If you are
+      # confident that you are not making changes the paths you are
+      # searching, `index` will avoid excess system calls.
+      #
+      #     index = trail.index
+      #     index.find "hike/trail"
+      #     index.find "test_trail"
+      #
+      def index
+        Index.new(root, paths, extensions)
+      end
+
+      # `Trail#entries` is equivalent to `Dir#entries`. It is not
+      # recommend to use this method for general purposes. It exists for
+      # parity with `Index#entries`.
+      def entries(path)
+        pathname = Pathname.new(path)
+        if pathname.directory?
+          pathname.entries.reject { |entry| entry.to_s =~ /^\.|~$|^\#.*\#$/ }.sort
+        else
+          []
+        end
+      end
+
+      # `Trail#stat` is equivalent to `File#stat`. It is not
+      # recommend to use this method for general purposes. It exists for
+      # parity with `Index#stat`.
+      def stat(path)
+        if File.exist?(path)
+          File.stat(path.to_s)
+        else
+          # nil
+        end
+      end
+
+      private
+
+      def normalize_extension(ext)
+        ext.start_with?('.') ? ext : ".#{ext}"
+      end
+
+      def normalize_path(path)
+        path = Pathname.new(path)
+        path = @root.join(path) if path.relative?
+        path.expand_path.to_s
+      end
+    end
+  end
+end
diff --git a/lib/opal/magic_comments.rb b/lib/opal/magic_comments.rb
new file mode 100644
index 00000000..8317aa72
--- /dev/null
+++ b/lib/opal/magic_comments.rb
@@ -0,0 +1,34 @@
+# frozen_string_literal: true
+
+module Opal::MagicComments
+  MAGIC_COMMENT_RE = /\A# *(\w+) *: *(\S+.*?) *$/.freeze
+  EMACS_MAGIC_COMMENT_RE = /\A# *-\*- *(\w+) *: *(\S+.*?) *-\*- *$/.freeze
+
+  def self.parse(sexp, comments)
+    flags = {}
+
+    # We have an upper limit at the first line of code
+    if sexp
+      first_line = sexp.loc.line
+      comments = comments.take(first_line)
+    end
+
+    comments.each do |comment|
+      next if first_line && comment.loc.line >= first_line
+
+      if (parts = comment.text.scan(MAGIC_COMMENT_RE)).any? ||
+         (parts = comment.text.scan(EMACS_MAGIC_COMMENT_RE)).any?
+        parts.each do |key, value|
+          flags[key.to_sym] =
+            case value
+            when 'true' then true
+            when 'false' then false
+            else value
+            end
+        end
+      end
+    end
+
+    flags
+  end
+end
diff --git a/lib/opal/nodes.rb b/lib/opal/nodes.rb
new file mode 100644
index 00000000..6f7bfb4f
--- /dev/null
+++ b/lib/opal/nodes.rb
@@ -0,0 +1,32 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/base'
+require 'opal/nodes/literal'
+require 'opal/nodes/variables'
+require 'opal/nodes/constants'
+require 'opal/nodes/call'
+require 'opal/nodes/csend'
+require 'opal/nodes/call_special'
+require 'opal/nodes/module'
+require 'opal/nodes/class'
+require 'opal/nodes/singleton_class'
+require 'opal/nodes/args'
+require 'opal/nodes/args/arity_check'
+require 'opal/nodes/iter'
+require 'opal/nodes/def'
+require 'opal/nodes/defs'
+require 'opal/nodes/if'
+require 'opal/nodes/logic'
+require 'opal/nodes/definitions'
+require 'opal/nodes/yield'
+require 'opal/nodes/rescue'
+require 'opal/nodes/super'
+require 'opal/nodes/top'
+require 'opal/nodes/while'
+require 'opal/nodes/hash'
+require 'opal/nodes/array'
+require 'opal/nodes/defined'
+require 'opal/nodes/masgn'
+require 'opal/nodes/arglist'
+require 'opal/nodes/x_string'
+require 'opal/nodes/lambda'
diff --git a/lib/opal/nodes/arglist.rb b/lib/opal/nodes/arglist.rb
new file mode 100644
index 00000000..6cbb9656
--- /dev/null
+++ b/lib/opal/nodes/arglist.rb
@@ -0,0 +1,56 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/base'
+
+module Opal
+  module Nodes
+    # FIXME: needs rewrite
+    class ArglistNode < Base
+      handle :arglist
+
+      def compile
+        code, work = [], []
+
+        children.each do |current|
+          splat = current.type == :splat
+          arg = expr(current)
+
+          if splat
+            if work.empty?
+              if code.empty?
+                code << arg
+              else
+                code << fragment('.concat(') << arg << fragment(')')
+              end
+            else
+              if code.empty?
+                code << fragment('[') << work << fragment(']')
+              else
+                code << fragment('.concat([') << work << fragment('])')
+              end
+
+              code << fragment('.concat(') << arg << fragment(')')
+            end
+
+            work = []
+          else
+            work << fragment(', ') unless work.empty?
+            work << arg
+          end
+        end
+
+        unless work.empty?
+          join = work
+
+          if code.empty?
+            code = join
+          else
+            code << fragment('.concat([') << join << fragment('])')
+          end
+        end
+
+        push(*code)
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/args.rb b/lib/opal/nodes/args.rb
new file mode 100644
index 00000000..4705f18e
--- /dev/null
+++ b/lib/opal/nodes/args.rb
@@ -0,0 +1,64 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/base'
+
+require 'opal/nodes/args/arg'
+require 'opal/nodes/args/arity_check'
+require 'opal/nodes/args/ensure_kwargs_are_kwargs'
+require 'opal/nodes/args/extract_block_arg'
+require 'opal/nodes/args/extract_kwarg'
+require 'opal/nodes/args/extract_kwargs'
+require 'opal/nodes/args/extract_kwoptarg'
+require 'opal/nodes/args/extract_kwrestarg'
+require 'opal/nodes/args/extract_optarg'
+require 'opal/nodes/args/extract_post_arg'
+require 'opal/nodes/args/extract_post_optarg'
+require 'opal/nodes/args/extract_restarg'
+require 'opal/nodes/args/fake_arg'
+require 'opal/nodes/args/initialize_iterarg'
+require 'opal/nodes/args/initialize_shadowarg'
+require 'opal/nodes/args/parameters'
+require 'opal/nodes/args/prepare_post_args'
+
+module Opal
+  module Nodes
+    class ArgsNode < Base
+      handle :args
+
+      # ruby allows for args with the same name, if the arg starts with a '_', like:
+      #   def funny_method_name(_, _)
+      #     puts _
+      #   end
+      # but javascript in strict mode does not allow for args with the same name
+      # ruby assigns the value of the first arg given
+      #   funny_method_name(1, 2) => 1
+      # 1. check for args starting with '_' and check if they appear multiple times
+      # 2. leave the first appearance as it is and rename the other ones
+      # compiler result:
+      #   function $$funny_method_name(_, __$2)
+
+      def compile
+        same_arg_counter = {}
+        children.each_with_index do |arg, idx|
+          if multiple_underscore?(arg)
+            same_arg_counter[arg] ||= 0
+            same_arg_counter[arg]  += 1
+            if same_arg_counter[arg] > 1
+              arg = s(arg.type, :"#{arg.children[0]}_$#{same_arg_counter[arg]}")
+            end
+          end
+
+          push ', ' if idx != 0
+          push process(arg)
+        end
+      end
+
+      def multiple_underscore?(arg)
+        arg.type == :arg &&
+          arg.children.count == 1 &&
+          arg.children.first.to_s.start_with?('_') &&
+          children.count(arg) > 1
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/args/arg.rb b/lib/opal/nodes/args/arg.rb
new file mode 100644
index 00000000..ded9f16a
--- /dev/null
+++ b/lib/opal/nodes/args/arg.rb
@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/base'
+
+module Opal
+  module Nodes
+    module Args
+      # Compiles a single inline required argument
+      # def m(a); end
+      #       ^
+      class ArgNode < Base
+        handle :arg
+        children :name
+
+        def compile
+          scope.add_arg name
+          push name.to_s
+        end
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/args/arity_check.rb b/lib/opal/nodes/args/arity_check.rb
new file mode 100644
index 00000000..291a36ee
--- /dev/null
+++ b/lib/opal/nodes/args/arity_check.rb
@@ -0,0 +1,153 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/base'
+require 'opal/rewriters/arguments'
+
+module Opal
+  module Nodes
+    class ArityCheckNode < Base
+      handle :arity_check
+      children :args_node
+
+      def initialize(*)
+        super
+
+        arguments = Rewriters::Arguments.new(args_node.children)
+
+        @args      = arguments.args
+        @optargs   = arguments.optargs
+        @restarg   = arguments.restarg
+        @postargs  = arguments.postargs
+        @kwargs    = arguments.kwargs
+        @kwoptargs = arguments.kwoptargs
+        @kwrestarg = arguments.kwrestarg
+        @kwnilarg  = arguments.kwnilarg
+      end
+
+      def compile
+        scope.arity = arity
+
+        return unless compiler.arity_check?
+
+        unless arity_checks.empty?
+          helper :ac
+          meth = scope.mid.to_s.inspect
+          line 'var $arity = arguments.length;'
+          push " if (#{arity_checks.join(' || ')}) { $ac($arity, #{arity}, this, #{meth}); }"
+        end
+      end
+
+      def kwargs
+        [*@kwargs, *@kwoptargs, @kwrestarg].compact
+      end
+
+      def all_args
+        @all_args ||= [*@args, *@optargs, @restarg, *@postargs, *kwargs].compact
+      end
+
+      # Returns an array of JS conditions for raising and argument
+      # error caused by arity check
+      def arity_checks
+        return @arity_checks if defined?(@arity_checks)
+
+        arity = all_args.size
+        arity -= @optargs.size
+
+        arity -= 1 if @restarg
+
+        arity -= kwargs.size
+
+        arity = -arity - 1 if !@optargs.empty? || !kwargs.empty? || @restarg
+
+        @arity_checks = []
+
+        if arity < 0 # splat or opt args
+          min_arity = -(arity + 1)
+          max_arity = all_args.size
+          @arity_checks << "$arity < #{min_arity}" if min_arity > 0
+          @arity_checks << "$arity > #{max_arity}" unless @restarg
+        else
+          @arity_checks << "$arity !== #{arity}"
+        end
+
+        @arity_checks
+      end
+
+      def arity
+        if @restarg || @optargs.any? || has_only_optional_kwargs?
+          negative_arity
+        else
+          positive_arity
+        end
+      end
+
+      def negative_arity
+        required_plain_args = all_args.select do |arg|
+          %i[arg mlhs].include?(arg.type)
+        end
+
+        result = required_plain_args.size
+
+        if has_required_kwargs?
+          result += 1
+        end
+
+        result = -result - 1
+
+        result
+      end
+
+      def positive_arity
+        result = all_args.size
+
+        result -= kwargs.size
+        result += 1 if kwargs.any?
+
+        result
+      end
+
+      def has_only_optional_kwargs?
+        kwargs.any? && kwargs.all? { |arg| %i[kwoptarg kwrestarg].include?(arg.type) }
+      end
+
+      def has_required_kwargs?
+        kwargs.any? { |arg| arg.type == :kwarg }
+      end
+    end
+
+    class IterArityCheckNode < ArityCheckNode
+      handle :iter_arity_check
+
+      def compile
+        scope.arity = arity
+
+        return unless compiler.arity_check?
+
+        unless arity_checks.empty?
+          parent_scope = scope
+          until parent_scope.def? || parent_scope.class_scope? || parent_scope.top?
+            parent_scope = parent_scope.parent
+          end
+
+          context =
+            if parent_scope.top?
+              "'<main>'"
+            elsif parent_scope.def?
+              "'#{parent_scope.mid}'"
+            elsif parent_scope.class?
+              "'<class:#{parent_scope.name}>'"
+            elsif parent_scope.module?
+              "'<module:#{parent_scope.name}>'"
+            end
+
+          identity = scope.identity
+
+          line "if (#{identity}.$$is_lambda || #{identity}.$$define_meth) {"
+          line '  var $arity = arguments.length;'
+          line "  if (#{arity_checks.join(' || ')}) { Opal.block_ac($arity, #{arity}, #{context}); }"
+          line '}'
+        end
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/args/ensure_kwargs_are_kwargs.rb b/lib/opal/nodes/args/ensure_kwargs_are_kwargs.rb
new file mode 100644
index 00000000..c3bb3e24
--- /dev/null
+++ b/lib/opal/nodes/args/ensure_kwargs_are_kwargs.rb
@@ -0,0 +1,28 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/base'
+
+module Opal
+  module Nodes
+    module Args
+      # A utility node responsible for compiling
+      # a runtime validation for kwargs.
+      #
+      # This node is used for both inline and post-kwargs
+      #
+      class EnsureKwargsAreKwargs < Base
+        handle :ensure_kwargs_are_kwargs
+
+        def compile
+          helper :hash2
+
+          line 'if ($kwargs == null) {'
+          line '  $kwargs = $hash2([], {});'
+          line '} else if (!$kwargs.$$is_hash) {'
+          line "  throw Opal.ArgumentError.$new('expected kwargs');"
+          line '}'
+        end
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/args/extract_block_arg.rb b/lib/opal/nodes/args/extract_block_arg.rb
new file mode 100644
index 00000000..4814532f
--- /dev/null
+++ b/lib/opal/nodes/args/extract_block_arg.rb
@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/base'
+
+module Opal
+  module Nodes
+    module Args
+      # Compiles extraction of the block argument
+      # def m(&block); end
+      #       ^^^^^^
+      #
+      # This node doesn't exist in the original AST,
+      # InlineArgs rewriter creates it to simplify compilation
+      class ExtractBlockarg < Base
+        handle :extract_blockarg
+        children :name
+
+        def compile
+          scope.uses_block!
+          scope.add_arg name
+
+          scope.prepare_block(name)
+        end
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/args/extract_kwarg.rb b/lib/opal/nodes/args/extract_kwarg.rb
new file mode 100644
index 00000000..68950c56
--- /dev/null
+++ b/lib/opal/nodes/args/extract_kwarg.rb
@@ -0,0 +1,32 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/base'
+
+module Opal
+  module Nodes
+    module Args
+      # This node is responsible for extracting a single
+      # required keyword argument from $kwargs
+      #
+      # $kwargs always exist (as argument when inlining is possible
+      # and as a local variable when it's not)
+      #
+      class ExtractKwarg < Base
+        handle :extract_kwarg
+        children :lvar_name
+
+        def compile
+          key_name = @sexp.meta[:arg_name]
+          scope.used_kwargs << key_name
+
+          add_temp lvar_name
+
+          line "if (!Opal.hasOwnProperty.call($kwargs.$$smap, '#{key_name}')) {"
+          line "  throw Opal.ArgumentError.$new('missing keyword: #{key_name}');"
+          line '}'
+          line "#{lvar_name} = $kwargs.$$smap[#{key_name.to_s.inspect}];"
+        end
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/args/extract_kwargs.rb b/lib/opal/nodes/args/extract_kwargs.rb
new file mode 100644
index 00000000..25ba095c
--- /dev/null
+++ b/lib/opal/nodes/args/extract_kwargs.rb
@@ -0,0 +1,28 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/base'
+
+module Opal
+  module Nodes
+    module Args
+      # A utility node responsible for extracting
+      # post-kwargs from post-arguments.
+      #
+      # This node is used when kwargs cannot be inlined:
+      #   def m(a = 1, kw:); end
+      #
+      # This node is NOT used when kwargs can be inlined:
+      #   def m(a, kw:); end
+      #
+      class ExtractKwargs < Base
+        handle :extract_kwargs
+
+        def compile
+          add_temp '$kwargs'
+
+          line '$kwargs = Opal.extract_kwargs($post_args)'
+        end
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/args/extract_kwoptarg.rb b/lib/opal/nodes/args/extract_kwoptarg.rb
new file mode 100644
index 00000000..1c172264
--- /dev/null
+++ b/lib/opal/nodes/args/extract_kwoptarg.rb
@@ -0,0 +1,33 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/base'
+
+module Opal
+  module Nodes
+    module Args
+      # This node is responsible for extracting a single
+      # optional keyword argument from $kwargs
+      #
+      # $kwargs always exist (as argument when inlining is possible
+      # and as a local variable when it's not)
+      #
+      class ExtractKwoptarg < Base
+        handle :extract_kwoptarg
+        children :lvar_name, :default_value
+
+        def compile
+          key_name = @sexp.meta[:arg_name]
+          scope.used_kwargs << key_name
+
+          add_temp lvar_name
+
+          line "#{lvar_name} = $kwargs.$$smap[#{key_name.to_s.inspect}];"
+
+          return if default_value.children[1] == :undefined
+
+          line "if (#{lvar_name} == null) #{lvar_name} = ", expr(default_value)
+        end
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/args/extract_kwrestarg.rb b/lib/opal/nodes/args/extract_kwrestarg.rb
new file mode 100644
index 00000000..5d52bcef
--- /dev/null
+++ b/lib/opal/nodes/args/extract_kwrestarg.rb
@@ -0,0 +1,37 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/base'
+
+module Opal
+  module Nodes
+    module Args
+      # This node is responsible for extracting a single
+      # splat keyword argument from $kwargs
+      #
+      # $kwargs always exist (as argument when inlining is possible
+      # and as a local variable when it's not)
+      #
+      class ExtractKwrestarg < Base
+        handle :extract_kwrestarg
+        children :name
+
+        def compile
+          # def m(**)
+          # arguments are assigned to `$kw_rest_arg` for super call
+          name = self.name || '$kw_rest_arg'
+
+          add_temp name
+          line "#{name} = Opal.kwrestargs($kwargs, #{used_kwargs});"
+        end
+
+        def used_kwargs
+          args = scope.used_kwargs.map do |arg_name|
+            "'#{arg_name}': true"
+          end
+
+          "{#{args.join ','}}"
+        end
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/args/extract_optarg.rb b/lib/opal/nodes/args/extract_optarg.rb
new file mode 100644
index 00000000..e5b475a1
--- /dev/null
+++ b/lib/opal/nodes/args/extract_optarg.rb
@@ -0,0 +1,33 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/base'
+
+module Opal
+  module Nodes
+    module Args
+      # Compiles extraction of a single inline optional argument
+      # def m(a = 1); end
+      #       ^^^^^
+      #
+      # This node doesn't exist in the original AST,
+      # InlineArgs rewriter creates it to simplify compilation
+      #
+      # Sometimes the argument can't be inlined.
+      # In such cases InlineArgs rewriter replaces
+      #   s(:optarg, :arg_name, ...default value...)
+      # to:
+      #   s(:fakearg) + s(:extract_post_optarg, :arg_name, ...default value...)
+      #
+      class ExtractOptargNode < Base
+        handle :extract_optarg
+        children :name, :default_value
+
+        def compile
+          return if default_value.children[1] == :undefined
+
+          line "if (#{name} == null) #{name} = ", expr(default_value), ";"
+        end
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/args/extract_post_arg.rb b/lib/opal/nodes/args/extract_post_arg.rb
new file mode 100644
index 00000000..168787cb
--- /dev/null
+++ b/lib/opal/nodes/args/extract_post_arg.rb
@@ -0,0 +1,25 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/base'
+
+module Opal
+  module Nodes
+    module Args
+      # This node is responsible for extracting a single
+      # required post-argument from $post_args
+      #
+      class ExtractPostArg < Base
+        handle :extract_post_arg
+        children :name
+
+        def compile
+          add_temp name
+
+          line "#{name} = $post_args.shift();"
+
+          line "if (#{name} == null) #{name} = nil;"
+        end
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/args/extract_post_optarg.rb b/lib/opal/nodes/args/extract_post_optarg.rb
new file mode 100644
index 00000000..468b6ae8
--- /dev/null
+++ b/lib/opal/nodes/args/extract_post_optarg.rb
@@ -0,0 +1,36 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/base'
+
+module Opal
+  module Nodes
+    module Args
+      # This node is responsible for extracting a single
+      # optional post-argument
+      #
+      # args_to_keep is the number of required post-arguments
+      #
+      #   def m(a = 1, b, c, d); end
+      # becomes something like:
+      #   if post_args.length > 3
+      #     a = post_args[0]
+      #     post_args = post_args[1..-1]
+      #   end
+      #
+      class ExtractPostOptarg < Base
+        handle :extract_post_optarg
+        children :name, :default_value, :args_to_keep
+
+        def compile
+          add_temp name
+
+          line "if ($post_args.length > #{args_to_keep}) #{name} = $post_args.shift();"
+
+          return if default_value.children[1] == :undefined
+
+          line "if (#{name} == null) #{name} = ", expr(default_value), ";"
+        end
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/args/extract_restarg.rb b/lib/opal/nodes/args/extract_restarg.rb
new file mode 100644
index 00000000..d8794a7b
--- /dev/null
+++ b/lib/opal/nodes/args/extract_restarg.rb
@@ -0,0 +1,38 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/base'
+
+module Opal
+  module Nodes
+    module Args
+      # This node is responsible for extracting a splat argument from post-arguments
+      #
+      # args_to_keep is the number of required post-arguments
+      #
+      #   def m(*a, b, c, d); end
+      # becomes something like:
+      #   a = post_args[0..-3]
+      #   post_args = post_args[-3..-1]
+      #
+      class ExtractRestarg < Base
+        handle :extract_restarg
+        children :name, :args_to_keep
+
+        def compile
+          # def m(*)
+          # arguments are assigned to `$rest_arg` for super call
+          name = self.name || '$rest_arg'
+
+          add_temp name
+
+          if args_to_keep == 0
+            # no post-args, we are free to grab everything
+            line "#{name} = $post_args;"
+          else
+            line "#{name} = $post_args.splice(0, $post_args.length - #{args_to_keep});"
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/args/fake_arg.rb b/lib/opal/nodes/args/fake_arg.rb
new file mode 100644
index 00000000..9117a6ca
--- /dev/null
+++ b/lib/opal/nodes/args/fake_arg.rb
@@ -0,0 +1,26 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/base'
+
+module Opal
+  module Nodes
+    module Args
+      # Compiles a fake argument produced by the InlineArgs rewriter.
+      #
+      # This argument represents an argument from the
+      # Ruby code that gets initialized later in the function body.
+      #
+      # def m(a = 1, b); end
+      #              ^
+      class FakeArgNode < Base
+        handle :fake_arg
+
+        def compile
+          name = scope.next_temp
+          scope.add_arg name
+          push name
+        end
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/args/initialize_iterarg.rb b/lib/opal/nodes/args/initialize_iterarg.rb
new file mode 100644
index 00000000..c02cdd45
--- /dev/null
+++ b/lib/opal/nodes/args/initialize_iterarg.rb
@@ -0,0 +1,26 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/base'
+
+module Opal
+  module Nodes
+    module Args
+      # This node is responsible for initializing a single
+      # required block arg
+      #
+      #   proc { |a| }
+      #
+      # Procs don't have arity checking and code like
+      #   proc { |a| }.call
+      # must return nil
+      class InitializeIterarg < Base
+        handle :initialize_iter_arg
+        children :name
+
+        def compile
+          line "if (#{name} == null) #{name} = nil;"
+        end
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/args/initialize_shadowarg.rb b/lib/opal/nodes/args/initialize_shadowarg.rb
new file mode 100644
index 00000000..08289aa8
--- /dev/null
+++ b/lib/opal/nodes/args/initialize_shadowarg.rb
@@ -0,0 +1,24 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/base'
+
+module Opal
+  module Nodes
+    module Args
+      # This node is responsible for initializing a shadow arg
+      #
+      # proc { |;a| }
+      #
+      class InitializeShadowarg < Base
+        handle :initialize_shadowarg
+        children :name
+
+        def compile
+          scope.locals << name
+          scope.add_arg(name)
+          line "#{name} = nil;"
+        end
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/args/parameters.rb b/lib/opal/nodes/args/parameters.rb
new file mode 100644
index 00000000..5dffaf31
--- /dev/null
+++ b/lib/opal/nodes/args/parameters.rb
@@ -0,0 +1,69 @@
+# frozen_string_literal: true
+
+module Opal
+  module Nodes
+    module Args
+      class Parameters
+        def initialize(args)
+          @args = args.children
+        end
+
+        def to_code
+          stringified_parameters = @args.map do |arg|
+            public_send(:"on_#{arg.type}", *arg)
+          end
+
+          "[#{stringified_parameters.compact.join(', ')}]"
+        end
+
+        def on_arg(arg_name)
+          %{['req', '#{arg_name}']}
+        end
+
+        def on_mlhs(*)
+          %{['req']}
+        end
+
+        def on_optarg(arg_name, _default_value)
+          %{['opt', '#{arg_name}']}
+        end
+
+        def on_restarg(arg_name = nil)
+          if arg_name
+            arg_name = :* if arg_name == :fwd_rest_arg
+            %{['rest', '#{arg_name}']}
+          else
+            %{['rest']}
+          end
+        end
+
+        def on_kwarg(arg_name)
+          %{['keyreq', '#{arg_name}']}
+        end
+
+        def on_kwoptarg(arg_name, _default_value)
+          %{['key', '#{arg_name}']}
+        end
+
+        def on_kwrestarg(arg_name = nil)
+          if arg_name
+            %{['keyrest', '#{arg_name}']}
+          else
+            %{['keyrest']}
+          end
+        end
+
+        def on_blockarg(arg_name)
+          arg_name = :& if arg_name == :fwd_block_arg
+          %{['block', '#{arg_name}']}
+        end
+
+        def on_kwnilarg
+          %{['nokey']}
+        end
+
+        def on_shadowarg(_arg_name); end
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/args/prepare_post_args.rb b/lib/opal/nodes/args/prepare_post_args.rb
new file mode 100644
index 00000000..965c47da
--- /dev/null
+++ b/lib/opal/nodes/args/prepare_post_args.rb
@@ -0,0 +1,26 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/base'
+
+module Opal
+  module Nodes
+    module Args
+      # A utility node responsible for preparing
+      # post-argument for :extract_post_* nodes
+      class PreparePostArgs < Base
+        handle :prepare_post_args
+        children :offset
+
+        def compile
+          add_temp '$post_args'
+
+          if offset == 0
+            line "$post_args = Opal.slice.call(arguments)"
+          else
+            line "$post_args = Opal.slice.call(arguments, #{offset})"
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/array.rb b/lib/opal/nodes/array.rb
new file mode 100644
index 00000000..1c7ff888
--- /dev/null
+++ b/lib/opal/nodes/array.rb
@@ -0,0 +1,56 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/base'
+
+module Opal
+  module Nodes
+    class ArrayNode < Base
+      handle :array
+
+      def compile
+        return push('[]') if children.empty?
+
+        code, work = [], []
+
+        children.each do |child|
+          splat = child.type == :splat
+          part  = expr(child)
+
+          if splat
+            if work.empty?
+              if code.empty?
+                code << fragment('[].concat(') << part << fragment(')')
+              else
+                code << fragment('.concat(') << part << fragment(')')
+              end
+            else
+              if code.empty?
+                code << fragment('[') << work << fragment(']')
+              else
+                code << fragment('.concat([') << work << fragment('])')
+              end
+
+              code << fragment('.concat(') << part << fragment(')')
+            end
+            work = []
+          else
+            work << fragment(', ') unless work.empty?
+            work << part
+          end
+        end
+
+        unless work.empty?
+          join = [fragment('['), work, fragment(']')]
+
+          if code.empty?
+            code = join
+          else
+            code.push([fragment('.concat('), join, fragment(')')])
+          end
+        end
+
+        push code
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/base.rb b/lib/opal/nodes/base.rb
new file mode 100644
index 00000000..d0894e73
--- /dev/null
+++ b/lib/opal/nodes/base.rb
@@ -0,0 +1,222 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/helpers'
+
+module Opal
+  module Nodes
+    class Base
+      include Helpers
+
+      def self.handlers
+        @handlers ||= {}
+      end
+
+      def self.handle(*types)
+        types.each do |type|
+          Base.handlers[type] = self
+        end
+      end
+
+      def self.children(*names)
+        names.each_with_index do |name, idx|
+          define_method(name) do
+            @sexp.children[idx]
+          end
+        end
+      end
+
+      def self.truthy_optimize?
+        false
+      end
+
+      attr_reader :compiler, :type, :sexp
+
+      def initialize(sexp, level, compiler)
+        @sexp = sexp
+        @type = sexp.type
+        @level = level
+        @compiler = compiler
+        @compiler.top_scope ||= self
+      end
+
+      def children
+        @sexp.children
+      end
+
+      def compile_to_fragments
+        return @fragments if defined?(@fragments)
+
+        @fragments = []
+        compile
+        @fragments
+      end
+
+      def compile
+        raise 'Not Implemented'
+      end
+
+      def push(*strs)
+        strs.each do |str|
+          str = fragment(str) if str.is_a?(String)
+          @fragments << str
+        end
+      end
+
+      def unshift(*strs)
+        strs.reverse_each do |str|
+          str = fragment(str) if str.is_a?(String)
+          @fragments.unshift str
+        end
+      end
+
+      def wrap(pre, post)
+        unshift pre
+        push post
+      end
+
+      def fragment(str, loc: true)
+        Opal::Fragment.new str, scope, loc && @sexp
+      end
+
+      def error(msg)
+        @compiler.error msg
+      end
+
+      def scope
+        @compiler.scope
+      end
+
+      def top_scope
+        @compiler.top_scope
+      end
+
+      def s(type, *children)
+        ::Opal::AST::Node.new(type, children, location: @sexp.loc)
+      end
+
+      def expr?
+        @level == :expr
+      end
+
+      def recv?
+        @level == :recv
+      end
+
+      def stmt?
+        @level == :stmt
+      end
+
+      def process(sexp, level = :expr)
+        @compiler.process sexp, level
+      end
+
+      def expr(sexp)
+        @compiler.process sexp, :expr
+      end
+
+      def recv(sexp)
+        @compiler.process sexp, :recv
+      end
+
+      def stmt(sexp)
+        @compiler.process sexp, :stmt
+      end
+
+      def expr_or_nil(sexp)
+        sexp ? expr(sexp) : 'nil'
+      end
+
+      def add_local(name)
+        scope.add_scope_local name.to_sym
+      end
+
+      def add_ivar(name)
+        scope.add_scope_ivar name
+      end
+
+      def add_gvar(name)
+        scope.add_scope_gvar name
+      end
+
+      def add_temp(temp)
+        scope.add_scope_temp temp
+      end
+
+      def helper(name)
+        @compiler.helper name
+      end
+
+      def with_temp(&block)
+        @compiler.with_temp(&block)
+      end
+
+      def in_while?
+        @compiler.in_while?
+      end
+
+      def while_loop
+        @compiler.instance_variable_get(:@while_loop)
+      end
+
+      def has_rescue_else?
+        scope.has_rescue_else?
+      end
+
+      def in_ensure(&block)
+        scope.in_ensure(&block)
+      end
+
+      def in_ensure?
+        scope.in_ensure?
+      end
+
+      def in_resbody(&block)
+        scope.in_resbody(&block)
+      end
+
+      def in_resbody?
+        scope.in_resbody?
+      end
+
+      def in_rescue(node, &block)
+        scope.in_rescue(node, &block)
+      end
+
+      def class_variable_owner_nesting_level
+        cvar_scope = scope
+        nesting_level = 0
+
+        while cvar_scope && !cvar_scope.class_scope?
+          # Needs only `class << self`, `module`, and `class`
+          # can increase nesting, but `class` & `module` are
+          # covered by `class_scope?`.
+          nesting_level += 1 if cvar_scope.sclass?
+
+          cvar_scope = cvar_scope.parent
+        end
+
+        nesting_level
+      end
+
+      def class_variable_owner
+        if scope
+          "#{scope.nesting}[#{class_variable_owner_nesting_level}]"
+        else
+          'Opal.Object'
+        end
+      end
+
+      def comments
+        compiler.comments[@sexp.loc]
+      end
+
+      def source_location
+        file = @sexp.loc.expression.source_buffer.name
+        file = "<internal:#{file}>" if file.start_with?("corelib/")
+        file = "<js:#{file}>" if file.end_with?(".js")
+        line = @sexp.loc.line
+        "['#{file}', #{line}]"
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/call.rb b/lib/opal/nodes/call.rb
new file mode 100644
index 00000000..05a04b94
--- /dev/null
+++ b/lib/opal/nodes/call.rb
@@ -0,0 +1,516 @@
+# frozen_string_literal: true
+
+require 'set'
+require 'pathname'
+require 'opal/nodes/base'
+require 'opal/rewriters/break_finder'
+
+module Opal
+  module Nodes
+    class CallNode < Base
+      handle :send
+
+      attr_reader :recvr, :meth, :arglist, :iter
+
+      SPECIALS = {}
+
+      # Operators that get optimized by compiler
+      OPERATORS = { :+ => :plus, :- => :minus, :* => :times, :/ => :divide,
+                    :< => :lt, :<= => :le, :> => :gt, :>= => :ge }.freeze
+
+      def self.add_special(name, options = {}, &handler)
+        SPECIALS[name] = options
+        define_method("handle_#{name}", &handler)
+      end
+
+      def initialize(*)
+        super
+        @recvr, @meth, *args = *@sexp
+
+        *rest, last_arg = *args
+
+        if last_arg && %i[iter block_pass].include?(last_arg.type)
+          @iter = last_arg
+          args = rest
+        else
+          @iter = nil
+        end
+
+        @arglist = s(:arglist, *args)
+      end
+
+      def compile
+        # handle some methods specially
+        # some special methods need to skip compilation, so we pass the default as a block
+        handle_special do
+          compiler.method_calls << meth.to_sym if record_method?
+
+          # if trying to access an lvar in eval or irb mode
+          return compile_eval_var if using_eval?
+
+          # if trying to access an lvar in irb mode
+          return compile_irb_var if using_irb?
+
+          default_compile
+        end
+      end
+
+      private
+
+      def iter_has_break?
+        return false unless iter
+
+        finder = Opal::Rewriters::BreakFinder.new
+        finder.process(iter)
+        finder.found_break?
+      end
+
+      # Opal has a runtime helper 'Opal.send_method_name' that assigns
+      # provided block to a '$$p' property of the method body
+      # and invokes a method using 'apply'.
+      #
+      # We have to compile a method call using this 'Opal.send_method_name' when a method:
+      # 1. takes a splat
+      # 2. takes a block
+      #
+      # Arguments that contain splat must be handled in a different way.
+      # @see #compile_arguments
+      #
+      # When a method takes a block we have to calculate all arguments
+      # **before** assigning '$$p' property (that stores a passed block)
+      # to a method body. This is some kind of protection from method calls
+      # like 'a(a {}) { 1 }'.
+      def invoke_using_send?
+        iter || splat?
+      end
+
+      def invoke_using_refinement?
+        !scope.scope.collect_refinements_temps.empty?
+      end
+
+      def default_compile
+        if auto_await?
+          push 'await '
+          scope.await_encountered = true
+        end
+
+        if invoke_using_refinement?
+          compile_using_refined_send
+        elsif invoke_using_send?
+          compile_using_send
+        else
+          compile_simple_call_chain
+        end
+
+        compile_break_catcher
+      end
+
+      # Compiles method call using `Opal.send`
+      #
+      # @example
+      #   a.b(c, &block)
+      #
+      #   Opal.send(a, 'b', [c], block)
+      #
+      def compile_using_send
+        helper :send
+
+        push '$send('
+        compile_receiver
+        compile_method_name
+        compile_arguments
+        compile_block_pass
+        push ')'
+      end
+
+      # Compiles method call using `Opal.refined_send`
+      #
+      # @example
+      #   a.b(c, &block)
+      #
+      #   Opal.refined_send(a, 'b', [c], block, [[Opal.MyRefinements]])
+      #
+      def compile_using_refined_send
+        helper :refined_send
+
+        push '$refined_send('
+        compile_refinements
+        compile_receiver
+        compile_method_name
+        compile_arguments
+        compile_block_pass
+        push ')'
+      end
+
+      def compile_receiver
+        push recv(receiver_sexp)
+      end
+
+      def compile_method_name
+        push ", '#{meth}'"
+      end
+
+      def compile_arguments
+        push ', '
+
+        if splat?
+          push expr(arglist)
+        elsif arglist.children.empty?
+          push '[]'
+        else
+          push '[', expr(arglist), ']'
+        end
+      end
+
+      def compile_block_pass
+        if iter
+          push ', ', expr(iter)
+        end
+      end
+
+      def compile_refinements
+        refinements = scope.collect_refinements_temps.map { |i| s(:js_tmp, i) }
+        push expr(s(:array, *refinements)), ', '
+      end
+
+      def compile_break_catcher
+        if iter_has_break?
+          unshift 'return '
+          unshift '(function(){var $brk = Opal.new_brk(); try {'
+          line '} catch (err) { if (err === $brk) { return err.$v } else { throw err } }})()'
+        end
+      end
+
+      def compile_simple_call_chain
+        push recv(receiver_sexp), method_jsid, '(', expr(arglist), ')'
+      end
+
+      def splat?
+        arglist.children.any? { |a| a.type == :splat }
+      end
+
+      def receiver_sexp
+        recvr || s(:self)
+      end
+
+      def method_jsid
+        mid_to_jsid meth.to_s
+      end
+
+      def record_method?
+        true
+      end
+
+      # Used to generate the code to use this sexp as an ivar var reference
+      def compile_irb_var
+        with_temp do |tmp|
+          lvar = meth
+          call = s(:send, s(:self), meth.intern, s(:arglist))
+          push "((#{tmp} = Opal.irb_vars.#{lvar}) == null ? ", expr(call), " : #{tmp})"
+        end
+      end
+
+      def compile_eval_var
+        push meth.to_s
+      end
+
+      # a variable reference in irb mode in top scope might be a var ref,
+      # or it might be a method call
+      def using_irb?
+        @compiler.irb? && scope.top? && variable_like?
+      end
+
+      def using_eval?
+        @compiler.eval? && scope.top? && @compiler.scope_variables.include?(meth)
+      end
+
+      def variable_like?
+        arglist == s(:arglist) && recvr.nil? && iter.nil?
+      end
+
+      def sexp_with_arglist
+        @sexp.updated(nil, [recvr, meth, arglist])
+      end
+
+      def auto_await?
+        awaited_set = compiler.async_await
+
+        awaited_set && awaited_set != true && awaited_set.match?(meth.to_s)
+      end
+
+      # Handle "special" method calls, e.g. require(). Subclasses can override
+      # this method. If this method returns nil, then the method will continue
+      # to be generated by CallNode.
+      def handle_special(&compile_default)
+        if SPECIALS.include? meth
+          method = method("handle_#{meth}")
+          method.arity == 1 ? method[compile_default] : method[]
+        else
+          yield # i.e. compile_default.call
+        end
+      end
+
+      OPERATORS.each do |operator, name|
+        add_special(operator.to_sym) do |compile_default|
+          if invoke_using_refinement?
+            compile_default.call
+          elsif compiler.inline_operators?
+            compiler.method_calls << operator.to_sym if record_method?
+            helper :"rb_#{name}"
+            lhs, rhs = expr(recvr), expr(arglist)
+
+            push fragment("$rb_#{name}(")
+            push lhs
+            push fragment(', ')
+            push rhs
+            push fragment(')')
+          else
+            compile_default.call
+          end
+        end
+      end
+
+      add_special :require do |compile_default|
+        str = DependencyResolver.new(compiler, arglist.children[0]).resolve
+        compiler.requires << str unless str.nil?
+        compile_default.call
+      end
+
+      add_special :require_relative do
+        arg = arglist.children[0]
+        file = compiler.file
+        if arg.type == :str
+          dir = File.dirname(file)
+          compiler.requires << Pathname(dir).join(arg.children[0]).cleanpath.to_s
+        end
+        push fragment("#{scope.self}.$require(#{file.inspect}+ '/../' + ")
+        push process(arglist)
+        push fragment(')')
+      end
+
+      add_special :autoload do |compile_default|
+        args = arglist.children
+        if args.length == 2 && args[0].type == :sym
+          str = DependencyResolver.new(compiler, args[1], :ignore).resolve
+          if str.nil?
+            compiler.warning "File for autoload of constant '#{args[0].children[0]}' could not be bundled!"
+          else
+            compiler.requires << str
+            compiler.autoloads << str
+          end
+        end
+        compile_default.call
+      end
+
+      add_special :require_tree do |compile_default|
+        first_arg, *rest = *arglist.children
+        if first_arg.type == :str
+          relative_path = first_arg.children[0]
+          compiler.required_trees << relative_path
+
+          dir = File.dirname(compiler.file)
+          full_path = Pathname(dir).join(relative_path).cleanpath.to_s
+          full_path.force_encoding(relative_path.encoding)
+          first_arg = first_arg.updated(nil, [full_path])
+        end
+        @arglist = arglist.updated(nil, [first_arg] + rest)
+        compile_default.call
+      end
+
+      add_special :block_given? do
+        push compiler.handle_block_given_call @sexp
+      end
+
+      add_special :__callee__ do
+        if scope.def?
+          push fragment scope.mid.to_s.inspect
+        else
+          push fragment 'nil'
+        end
+      end
+
+      add_special :__method__ do
+        if scope.def?
+          push fragment scope.mid.to_s.inspect
+        else
+          push fragment 'nil'
+        end
+      end
+
+      add_special :__dir__ do
+        push File.dirname(Opal::Compiler.module_name(compiler.file)).inspect
+      end
+
+      # Refinements support
+      add_special :using do |compile_default|
+        if scope.accepts_using? && arglist.children.count == 1
+          using_refinement(arglist.children.first)
+        else
+          compile_default.call
+        end
+      end
+
+      def using_refinement(arg)
+        prev, curr = *scope.refinements_temp
+        if prev
+          push "(#{curr} = #{prev}.slice(), #{curr}.push(", expr(arg), "), #{scope.self})"
+        else
+          push "(#{curr} = [", expr(arg), "], #{scope.self})"
+        end
+      end
+
+      add_special :debugger do
+        push fragment 'debugger'
+      end
+
+      add_special :__OPAL_COMPILER_CONFIG__ do
+        push fragment "Opal.hash({ arity_check: #{compiler.arity_check?} })"
+      end
+
+      add_special :lambda do |compile_default|
+        scope.defines_lambda do
+          compile_default.call
+        end
+      end
+
+      add_special :nesting do |compile_default|
+        push_nesting = push_nesting?
+        push "(Opal.Module.$$nesting = #{scope.nesting}, " if push_nesting
+        compile_default.call
+        push ')' if push_nesting
+      end
+
+      add_special :constants do |compile_default|
+        push_nesting = push_nesting?
+        push "(Opal.Module.$$nesting = #{scope.nesting}, " if push_nesting
+        compile_default.call
+        push ')' if push_nesting
+      end
+
+      # This can be refactored in terms of binding, but it would need 'corelib/binding'
+      # to be required in existing code.
+      add_special :eval do |compile_default|
+        next compile_default.call if arglist.children.length != 1 || ![s(:self), nil].include?(recvr)
+
+        scope.nesting
+        temp = scope.new_temp
+        scope_variables = scope.scope_locals.map(&:to_s).inspect
+        push "(#{temp} = ", expr(arglist)
+        push ", typeof Opal.compile === 'function' ? eval(Opal.compile(#{temp}"
+        push ', {scope_variables: ', scope_variables
+        push ", arity_check: #{compiler.arity_check?}, file: '(eval)', eval: true})) : "
+        push "#{scope.self}.$eval(#{temp}))"
+      end
+
+      add_special :local_variables do |compile_default|
+        next compile_default.call unless [s(:self), nil].include?(recvr)
+
+        scope_variables = scope.scope_locals.map(&:to_s).inspect
+        push scope_variables
+      end
+
+      add_special :binding do |compile_default|
+        next compile_default.call unless recvr.nil?
+
+        scope.nesting
+        push "Opal.Binding.$new("
+        push "  function($code, $value) {"
+        push "    if (typeof $value === 'undefined') {"
+        push "      return eval($code);"
+        push "    }"
+        push "    else {"
+        push "      return eval($code + ' = $value');"
+        push "    }"
+        push "  },"
+        push "  ", scope.scope_locals.map(&:to_s).inspect, ","
+        push "  ", scope.self, ","
+        push "  ", source_location
+        push ")"
+      end
+
+      add_special :__await__ do |compile_default|
+        if compiler.async_await
+          push fragment '(await ('
+          push process(recvr)
+          push fragment '))'
+          scope.await_encountered = true
+        else
+          compile_default.call
+        end
+      end
+
+      def push_nesting?
+        recv = children.first
+
+        children.size == 2 && (           # only receiver and method
+          recv.nil? || (                  # and no receiver
+            recv.type == :const &&        # or receiver
+            recv.children.last == :Module # is Module
+          )
+        )
+      end
+
+      class DependencyResolver
+        def initialize(compiler, sexp, missing_dynamic_require = nil)
+          @compiler = compiler
+          @sexp = sexp
+          @missing_dynamic_require = missing_dynamic_require || @compiler.dynamic_require_severity
+        end
+
+        def resolve
+          handle_part @sexp
+        end
+
+        def handle_part(sexp, missing_dynamic_require = @missing_dynamic_require)
+          if sexp
+            case sexp.type
+            when :str
+              return sexp.children[0]
+            when :dstr
+              return sexp.children.map { |i| handle_part i }.join
+            when :begin
+              return handle_part sexp.children[0] if sexp.children.length == 1
+            when :send
+              recv, meth, *args = sexp.children
+
+              parts = args.map { |s| handle_part(s, :ignore) }
+
+              return nil if parts.include? nil
+
+              if recv.is_a?(::Opal::AST::Node) && recv.type == :const && recv.children.last == :File
+                if meth == :expand_path
+                  return expand_path(*parts)
+                elsif meth == :join
+                  return expand_path parts.join('/')
+                elsif meth == :dirname
+                  return expand_path parts[0].split('/')[0...-1].join('/')
+                end
+              elsif meth == :__dir__
+                return File.dirname(Opal::Compiler.module_name(@compiler.file))
+              end
+            end
+          end
+
+          case missing_dynamic_require
+          when :error
+            @compiler.error 'Cannot handle dynamic require', @sexp.line
+          when :warning
+            @compiler.warning 'Cannot handle dynamic require', @sexp.line
+          end
+        end
+
+        def expand_path(path, base = '')
+          "#{base}/#{path}".split('/').each_with_object([]) do |part, p|
+            if part == ''
+              # we had '//', so ignore
+            elsif part == '..'
+              p.pop
+            else
+              p << part
+            end
+          end.join '/'
+        end
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/call_special.rb b/lib/opal/nodes/call_special.rb
new file mode 100644
index 00000000..41402762
--- /dev/null
+++ b/lib/opal/nodes/call_special.rb
@@ -0,0 +1,126 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/base'
+require 'opal/nodes/call'
+
+module Opal
+  module Nodes
+    # recvr.JS[:prop]
+    # => recvr.prop
+    class JsAttrNode < Base
+      handle :jsattr
+      children :recvr, :property
+
+      def compile
+        push recv(recvr), '[', expr(property), ']'
+      end
+    end
+
+    # recvr.JS[:prop] = value
+    # => recvr.prop = value
+    class JsAttrAsgnNode < Base
+      handle :jsattrasgn
+
+      children :recvr, :property, :value
+
+      def compile
+        push recv(recvr), '[', expr(property), '] = ', expr(value)
+      end
+    end
+
+    class JsCallNode < CallNode
+      handle :jscall
+
+      def initialize(*)
+        super
+
+        # For .JS. call we pass a block
+        # as a plain JS callback
+        if @iter
+          @arglist = @arglist << @iter
+        end
+        @iter = nil
+      end
+
+      def compile
+        default_compile
+      end
+
+      def method_jsid
+        ".#{meth}"
+      end
+
+      def compile_using_send
+        push recv(receiver_sexp), method_jsid, '.apply(null'
+        compile_arguments
+        if iter
+          push '.concat(', expr(iter), ')'
+        end
+        push ')'
+      end
+    end
+
+    # /regexp/ =~ rhs
+    # s(:match_with_lvasgn, lhs, rhs)
+    class Match3Node < Base
+      handle :match_with_lvasgn
+
+      children :lhs, :rhs
+
+      def compile
+        sexp = s(:send, lhs, :=~, rhs)
+        # Handle named matches like: /(?<abc>b)/ =~ 'b'
+        if lhs.type == :regexp && lhs.children.first.type == :str
+          re = lhs.children.first.children.first
+          names = re.scan(/\(\?<([^>]*)>/).flatten.map(&:to_sym)
+          unless names.empty?
+            # $m3names = $~ ? $~.named_captures : {}
+            names_def = s(:lvasgn, :$m3names,
+              s(:if,
+                s(:gvar, :$~),
+                s(:send, s(:gvar, :$~), :named_captures),
+                s(:hash)
+              )
+            )
+
+            names = names.map do |name|
+              # abc = $m3names[:abc]
+              s(:lvasgn, name,
+                s(:send,
+                  s(:lvar, :$m3names),
+                  :[],
+                  s(:sym, name)
+                )
+              )
+            end
+
+            if stmt?
+              # We don't care about a return value of this one, so we
+              # ignore it and just assign the local variables.
+              #
+              # (/(?<abc>b)/ =~ 'f')
+              # $m3names = $~ ? $~.named_captures : {}
+              # abc = $m3names[:abc]
+              sexp = s(:begin, sexp, names_def, *names)
+            else
+              # We actually do care about a return value, so we must
+              # keep it saved.
+              #
+              # $m3tmp = (/(?<abc>b)/ =~ 'f')
+              # $m3names = $~ ? $~.named_captures : {}
+              # abc = $m3names[:abc]
+              # $m3tmp
+              sexp = s(:begin,
+                s(:lvasgn, :$m3tmp, sexp),
+                names_def,
+                *names,
+                s(:lvar, :$m3tmp)
+              )
+            end
+          end
+        end
+        push process(sexp, @level)
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/class.rb b/lib/opal/nodes/class.rb
new file mode 100644
index 00000000..00b4e474
--- /dev/null
+++ b/lib/opal/nodes/class.rb
@@ -0,0 +1,49 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/module'
+
+module Opal
+  module Nodes
+    class ClassNode < ModuleNode
+      handle :class
+
+      children :cid, :sup, :body
+
+      def compile
+        name, base = name_and_base
+        helper :klass
+
+        if body.nil?
+          # Simplified compile for empty body
+          if stmt?
+            unshift '$klass(', base, ', ', super_code, ", '#{name}')"
+          else
+            unshift '($klass(', base, ', ', super_code, ", '#{name}'), nil)"
+          end
+        else
+          line "  var self = $klass($base, $super, '#{name}');"
+          in_scope do
+            scope.name = name
+            compile_body
+          end
+
+          if await_encountered
+            await_begin = '(await '
+            await_end = ')'
+            async = 'async '
+            parent.await_encountered = true
+          else
+            await_begin, await_end, async = '', '', ''
+          end
+
+          unshift "#{await_begin}(#{async}function($base, $super#{', $parent_nesting' if @define_nesting}) {"
+          line '})(', base, ', ', super_code, "#{', ' + scope.nesting if @define_nesting})#{await_end}"
+        end
+      end
+
+      def super_code
+        sup ? expr(sup) : 'null'
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/constants.rb b/lib/opal/nodes/constants.rb
new file mode 100644
index 00000000..7dcaa804
--- /dev/null
+++ b/lib/opal/nodes/constants.rb
@@ -0,0 +1,77 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/base'
+
+module Opal
+  module Nodes
+    class ConstNode < Base
+      handle :const
+
+      children :const_scope, :name
+
+      def compile
+        if magical_data_const?
+          push('$__END__')
+        elsif optimized_access?
+          helper :"#{name}"
+          push "$#{name}"
+        elsif const_scope == s(:cbase)
+          push "#{top_scope.absolute_const}('#{name}')"
+        elsif const_scope
+          push "#{top_scope.absolute_const}(", recv(const_scope), ", '#{name}')"
+        elsif compiler.eval?
+          push "#{scope.relative_access}('#{name}')"
+        else
+          push "#{scope.relative_access}('#{name}')"
+        end
+      end
+
+      # Ruby has a magical const DATA
+      # that should be processed in a different way:
+      # 1. When current file contains __END__ in the end of the file
+      #    DATA const should be resolved to the string located after __END__
+      # 2. When current file doesn't have __END__ section
+      #    DATA const should be resolved to a regular ::DATA constant
+      def magical_data_const?
+        const_scope.nil? && name == :DATA && compiler.eof_content
+      end
+
+      OPTIMIZED_ACCESS_CONSTS = %i[
+        BasicObject Object Module Class Opal Kernel NilClass
+      ].freeze
+
+      # For a certain case of calls like `::Opal.coerce_to?` we can
+      # optimize the calls. We can be sure they are defined from the
+      # beginning.
+      def optimized_access?
+        const_scope == s(:cbase) && OPTIMIZED_ACCESS_CONSTS.include?(name)
+      end
+    end
+
+    # ::CONST
+    # s(:const, s(:cbase), :CONST)
+    class CbaseNode < Base
+      handle :cbase
+
+      def compile
+        push "'::'"
+      end
+    end
+
+    class ConstAssignNode < Base
+      handle :casgn
+
+      children :base, :name, :value
+
+      def compile
+        helper :const_set
+
+        if base
+          push '$const_set(', expr(base), ", '#{name}', ", expr(value), ')'
+        else
+          push "$const_set(#{scope.nesting}[0], '#{name}', ", expr(value), ')'
+        end
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/csend.rb b/lib/opal/nodes/csend.rb
new file mode 100644
index 00000000..8ce594c6
--- /dev/null
+++ b/lib/opal/nodes/csend.rb
@@ -0,0 +1,24 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/call'
+
+module Opal
+  module Nodes
+    # Safe navigator recv&.meth(arglist, &block)
+    class CSendNode < CallNode
+      handle :csend
+
+      def default_compile
+        helper :send
+
+        conditional_send(recv(receiver_sexp)) do |receiver_temp|
+          push '$send(', receiver_temp
+          compile_method_name
+          compile_arguments
+          compile_block_pass
+          push ')'
+        end
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/def.rb b/lib/opal/nodes/def.rb
new file mode 100644
index 00000000..db9e342c
--- /dev/null
+++ b/lib/opal/nodes/def.rb
@@ -0,0 +1,95 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/node_with_args'
+
+module Opal
+  module Nodes
+    class DefNode < NodeWithArgs
+      handle :def
+
+      children :mid, :inline_args, :stmts
+
+      def compile
+        inline_params = nil
+        scope_name = nil
+
+        in_scope do
+          scope.mid = mid
+          scope.defs = true if @sexp.type == :defs
+
+          scope.identify!
+          scope_name = scope.identity
+
+          # Setting a default block name (later can be overwritten by a blockarg)
+          scope.block_name = '$yield'
+
+          inline_params = process(inline_args)
+
+          stmt_code = stmt(compiler.returns(stmts))
+
+          compile_block_arg
+
+          add_temp 'self = this' if @define_self
+
+          compile_arity_check
+
+          unshift "\n#{current_indent}", scope.to_vars
+
+          line stmt_code
+
+          if scope.catch_return
+            unshift "try {\n"
+            line '} catch ($returner) { if ($returner === Opal.returner) { return $returner.$v }'
+            push ' throw $returner; }'
+          end
+        end
+
+        unshift ') {'
+        unshift(inline_params)
+        unshift "function #{scope_name}("
+        if await_encountered
+          unshift "async "
+        end
+        line '}'
+
+        blockopts = []
+
+        blockopts << "$$arity: #{arity}"
+
+        if compiler.arity_check?
+          blockopts << "$$parameters: #{parameters_code}"
+        end
+
+        if compiler.parse_comments?
+          blockopts << "$$comments: #{comments_code}"
+        end
+
+        if compiler.enable_source_location?
+          blockopts << "$$source_location: #{source_location}"
+        end
+
+        if blockopts.length == 1
+          push ", #{arity}"
+        elsif blockopts.length > 1
+          push ', {', blockopts.join(', '), '}'
+        end
+
+        wrap_with_definition
+
+        scope.nesting if @define_nesting
+        scope.relative_access if @define_relative_access
+      end
+
+      def wrap_with_definition
+        helper :def
+        wrap "$def(#{scope.self}, '$#{mid}', ", ')'
+
+        unshift "\n#{current_indent}" unless expr?
+      end
+
+      def comments_code
+        '[' + comments.map { |comment| comment.text.inspect }.join(', ') + ']'
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/defined.rb b/lib/opal/nodes/defined.rb
new file mode 100644
index 00000000..4b992151
--- /dev/null
+++ b/lib/opal/nodes/defined.rb
@@ -0,0 +1,223 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/base'
+
+module Opal
+  module Nodes
+    class DefinedNode < Base
+      handle :defined?
+
+      children :value
+
+      def compile
+        case value.type
+        when :self, :nil, :false, :true
+          push value.type.to_s.inspect
+        when :lvasgn, :ivasgn, :gvasgn, :cvasgn, :casgn, :op_asgn, :or_asgn, :and_asgn
+          push "'assignment'"
+        when :lvar
+          push "'local-variable'"
+        when :begin
+          if value.children.size == 1 && value.children[0].type == :masgn
+            push "'assignment'"
+          else
+            push "'expression'"
+          end
+        when :send
+          compile_defined_send(value)
+          wrap '(', " ? 'method' : nil)"
+        when :ivar
+          compile_defined_ivar(value)
+          wrap '(', " ? 'instance-variable' : nil)"
+        when :zsuper, :super
+          compile_defined_super
+        when :yield
+          compile_defined_yield
+          wrap '(', " ? 'yield' : nil)"
+        when :xstr
+          compile_defined_xstr(value)
+        when :const
+          compile_defined_const(value)
+          wrap '(', " ? 'constant' : nil)"
+        when :cvar
+          compile_defined_cvar(value)
+          wrap '(', " ? 'class variable' : nil)"
+        when :gvar
+          compile_defined_gvar(value)
+          wrap '(', " ? 'global-variable' : nil)"
+        when :back_ref
+          compile_defined_back_ref
+          wrap '(', " ? 'global-variable' : nil)"
+        when :nth_ref
+          compile_defined_nth_ref
+          wrap '(', " ? 'global-variable' : nil)"
+        when :array
+          compile_defined_array(value)
+          wrap '(', " ? 'expression' : nil)"
+        else
+          push "'expression'"
+        end
+      end
+
+      def compile_defined(node)
+        type = node.type
+
+        if respond_to? "compile_defined_#{type}"
+          __send__("compile_defined_#{type}", node)
+        else
+          node_tmp = scope.new_temp
+          push "(#{node_tmp} = ", expr(node), ')'
+          node_tmp
+        end
+      end
+
+      def wrap_with_try_catch(code)
+        returning_tmp = scope.new_temp
+
+        push "(#{returning_tmp} = (function() { try {"
+        push "  return #{code};"
+        push '} catch ($err) {'
+        push '  if (Opal.rescue($err, [Opal.Exception])) {'
+        push '    try {'
+        push '      return false;'
+        push '    } finally { Opal.pop_exception() }'
+        push '  } else { throw $err; }'
+        push '}})())'
+
+        returning_tmp
+      end
+
+      def compile_send_recv_doesnt_raise(recv_code)
+        wrap_with_try_catch(recv_code)
+      end
+
+      def compile_defined_send(node)
+        recv, method_name, *args = *node
+        mid = mid_to_jsid(method_name.to_s)
+
+        if recv
+          recv_code = compile_defined(recv)
+          push ' && '
+
+          if recv.type == :send
+            recv_code = compile_send_recv_doesnt_raise(recv_code)
+            push ' && '
+          end
+
+          recv_tmp = scope.new_temp
+          push "(#{recv_tmp} = ", recv_code, ", #{recv_tmp}) && "
+        else
+          recv_tmp = scope.self
+        end
+
+        recv_value_tmp = scope.new_temp
+        push "(#{recv_value_tmp} = #{recv_tmp}) && "
+
+        meth_tmp = scope.new_temp
+        push "(((#{meth_tmp} = #{recv_value_tmp}#{mid}) && !#{meth_tmp}.$$stub)"
+
+        push " || #{recv_value_tmp}['$respond_to_missing?']('#{method_name}'))"
+
+        args.each do |arg|
+          case arg.type
+          when :block_pass
+            # ignoring
+          else
+            push ' && '
+            compile_defined(arg)
+          end
+        end
+
+        wrap '(', ')'
+        "#{meth_tmp}()"
+      end
+
+      def compile_defined_ivar(node)
+        name = node.children[0].to_s[1..-1]
+        # FIXME: this check should be positive for ivars initialized as nil too.
+        # Since currently all known ivars are inialized to nil in the constructor
+        # we can't tell if it was the user that put nil and made the ivar #defined?
+        # or not.
+        tmp = scope.new_temp
+        push "(#{tmp} = #{scope.self}['#{name}'], #{tmp} != null && #{tmp} !== nil)"
+
+        tmp
+      end
+
+      def compile_defined_super
+        push expr s(:defined_super)
+      end
+
+      def compile_defined_yield
+        scope.uses_block!
+        block_name = scope.block_name || scope.find_parent_def.block_name
+        push "(#{block_name} != null && #{block_name} !== nil)"
+        block_name
+      end
+
+      def compile_defined_xstr(node)
+        push '(typeof(', expr(node), ') !== "undefined")'
+      end
+
+      def compile_defined_const(node)
+        const_scope, const_name = *node
+
+        const_tmp = scope.new_temp
+
+        if const_scope.nil?
+          push "(#{const_tmp} = #{scope.relative_access}('#{const_name}', 'skip_raise'))"
+        elsif const_scope == s(:cbase)
+          push "(#{const_tmp} = #{top_scope.absolute_const}('::', '#{const_name}', 'skip_raise'))"
+        else
+          const_scope_tmp = compile_defined(const_scope)
+          push " && (#{const_tmp} = #{top_scope.absolute_const}(#{const_scope_tmp}, '#{const_name}', 'skip_raise'))"
+        end
+        const_tmp
+      end
+
+      def compile_defined_cvar(node)
+        cvar_name, _ = *node
+        cvar_tmp = scope.new_temp
+        push "(#{cvar_tmp} = #{class_variable_owner}.$$cvars['#{cvar_name}'], #{cvar_tmp} != null)"
+        cvar_tmp
+      end
+
+      def compile_defined_gvar(node)
+        helper :gvars
+
+        name = node.children[0].to_s[1..-1]
+        gvar_temp = scope.new_temp
+
+        if %w[~ !].include? name
+          push "(#{gvar_temp} = ", expr(node), ' || true)'
+        else
+          push "(#{gvar_temp} = $gvars[#{name.inspect}], #{gvar_temp} != null)"
+        end
+
+        gvar_temp
+      end
+
+      def compile_defined_back_ref
+        helper :gvars
+        back_ref_temp = scope.new_temp
+        push "(#{back_ref_temp} = $gvars['~'], #{back_ref_temp} != null && #{back_ref_temp} !== nil)"
+        back_ref_temp
+      end
+
+      def compile_defined_nth_ref
+        helper :gvars
+
+        nth_ref_tmp = scope.new_temp
+        push "(#{nth_ref_tmp} = $gvars['~'], #{nth_ref_tmp} != null && #{nth_ref_tmp} != nil)"
+        nth_ref_tmp
+      end
+
+      def compile_defined_array(node)
+        node.children.each_with_index do |child, idx|
+          push ' && ' unless idx == 0
+          compile_defined(child)
+        end
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/definitions.rb b/lib/opal/nodes/definitions.rb
new file mode 100644
index 00000000..0aea009f
--- /dev/null
+++ b/lib/opal/nodes/definitions.rb
@@ -0,0 +1,106 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/base'
+
+module Opal
+  module Nodes
+    class UndefNode < Base
+      handle :undef
+
+      children :value
+
+      def compile
+        children.each do |child|
+          line "Opal.udef(#{scope.self}, '$' + ", expr(child), ');'
+        end
+      end
+    end
+
+    class AliasNode < Base
+      handle :alias
+
+      children :new_name, :old_name
+
+      def compile
+        # We only need to check one type, because parser otherwise denies invalid expressions
+        case new_name.type
+        when :gvar # This is a gvar alias: alias $a $b
+          helper :alias_gvar
+          new_name_str = new_name.children.first.to_s[1..-1].inspect
+          old_name_str = old_name.children.first.to_s[1..-1].inspect
+          push '$alias_gvar(', new_name_str, ', ', old_name_str, ')'
+        when :dsym, :sym # This is a method alias: alias a b
+          helper :alias
+          push "$alias(#{scope.self}, ", expr(new_name), ', ', expr(old_name), ')'
+        else # Nothing else is available, but just in case, drop an error
+          error "Opal doesn't know yet how to alias with #{new_name.type}"
+        end
+      end
+    end
+
+    class BeginNode < ScopeNode
+      handle :begin
+
+      def compile
+        return push 'nil' if children.empty?
+
+        if stmt?
+          compile_children(children, @level)
+        elsif simple_children?
+          compile_inline_children(children, @level)
+          wrap '(', ')' if children.size > 1
+        elsif children.size == 1
+          compile_inline_children(returned_children, @level)
+        else
+          compile_children(returned_children, @level)
+
+          if scope.parent.await_encountered
+            wrap '(await (async function() {', '})())'
+          else
+            wrap '(function() {', '})()'
+          end
+        end
+      end
+
+      def returned_children
+        @returned_children ||= begin
+          *rest, last_child = *children
+          if last_child
+            rest + [compiler.returns(last_child)]
+          else
+            [s(:nil)]
+          end
+        end
+      end
+
+      def compile_children(children, level)
+        children.each do |child|
+          line process(child, level), fragment(';', loc: false)
+        end
+      end
+
+      COMPLEX_CHILDREN = %i[while while_post until until_post js_return].freeze
+
+      def simple_children?
+        children.none? do |child|
+          COMPLEX_CHILDREN.include?(child.type)
+        end
+      end
+
+      def compile_inline_children(children, level)
+        processed_children = children.map do |child|
+          process(child, level)
+        end
+
+        processed_children.reject(&:empty?).each_with_index do |child, idx|
+          push fragment(', ', loc: false) unless idx == 0
+          push child
+        end
+      end
+    end
+
+    class KwBeginNode < BeginNode
+      handle :kwbegin
+    end
+  end
+end
diff --git a/lib/opal/nodes/defs.rb b/lib/opal/nodes/defs.rb
new file mode 100644
index 00000000..b3ccc6ce
--- /dev/null
+++ b/lib/opal/nodes/defs.rb
@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/def'
+
+module Opal
+  module Nodes
+    class DefsNode < DefNode
+      handle :defs
+      children :recvr, :mid, :inline_args, :stmts
+
+      def wrap_with_definition
+        helper :defs
+        unshift '$defs(', expr(recvr), ", '$#{mid}', "
+        push ')'
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/hash.rb b/lib/opal/nodes/hash.rb
new file mode 100644
index 00000000..5223d549
--- /dev/null
+++ b/lib/opal/nodes/hash.rb
@@ -0,0 +1,123 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/base'
+
+module Opal
+  module Nodes
+    class HashNode < Base
+      handle :hash
+
+      attr_accessor :has_kwsplat, :keys, :values
+
+      def initialize(*)
+        super
+        @has_kwsplat = false
+        @keys = []
+        @values = []
+
+        children.each do |child|
+          case child.type
+          when :kwsplat
+            @has_kwsplat = true
+          when :pair
+            @keys << child.children[0]
+            @values << child.children[1]
+          end
+        end
+      end
+
+      def simple_keys?
+        keys.all? { |key| %i[sym str].include?(key.type) }
+      end
+
+      def compile
+        if has_kwsplat
+          compile_merge
+        elsif simple_keys?
+          compile_hash2
+        else
+          compile_hash
+        end
+      end
+
+      # Compiles hashes containing kwsplats inside.
+      # hash like { **{ nested: 1 }, a: 1, **{ nested: 2} }
+      # should be compiled to
+      # { nested: 1}.merge(a: 1).merge(nested: 2)
+      # Each kwsplat overrides previosly defined keys
+      # Hash k/v pairs override previously defined kwsplat values
+      def compile_merge
+        helper :hash
+
+        result, seq = [], []
+
+        children.each do |child|
+          if child.type == :kwsplat
+            unless seq.empty?
+              result << expr(s(:hash, *seq))
+            end
+            result << expr(child)
+            seq = []
+          else
+            seq << child
+          end
+        end
+        unless seq.empty?
+          result << expr(s(:hash, *seq))
+        end
+
+        result.each_with_index do |fragment, idx|
+          if idx == 0
+            push fragment
+          else
+            push '.$merge(', fragment, ')'
+          end
+        end
+      end
+
+      # Compiles a hash without kwsplats
+      # with complex keys.
+      def compile_hash
+        helper :hash
+
+        children.each_with_index do |pair, idx|
+          key, value = pair.children
+          push ', ' unless idx == 0
+          push expr(key), ', ', expr(value)
+        end
+
+        wrap '$hash(', ')'
+      end
+
+      # Compiles a hash without kwsplats
+      # and containing **only** string/symbols as keys.
+      def compile_hash2
+        hash_obj, hash_keys = {}, []
+        helper :hash2
+
+        keys.size.times do |idx|
+          key = keys[idx].children[0].to_s.inspect
+          hash_keys << key unless hash_obj.include? key
+          hash_obj[key] = expr(values[idx])
+        end
+
+        hash_keys.each_with_index do |key, idx|
+          push ', ' unless idx == 0
+          push "#{key}: "
+          push hash_obj[key]
+        end
+
+        wrap "$hash2([#{hash_keys.join ', '}], {", '})'
+      end
+    end
+
+    class KwSplatNode < Base
+      handle :kwsplat
+      children :value
+
+      def compile
+        push 'Opal.to_hash(', expr(value), ')'
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/helpers.rb b/lib/opal/nodes/helpers.rb
new file mode 100644
index 00000000..9c4c6130
--- /dev/null
+++ b/lib/opal/nodes/helpers.rb
@@ -0,0 +1,138 @@
+# frozen_string_literal: true
+
+require 'opal/regexp_anchors'
+
+module Opal
+  module Nodes
+    module Helpers
+      def property(name)
+        valid_name?(name) ? ".#{name}" : "[#{name.inspect}]"
+      end
+
+      def valid_name?(name)
+        Opal::Rewriters::JsReservedWords.valid_name?(name)
+      end
+
+      # Converts a ruby method name into its javascript equivalent for
+      # a method/function call. All ruby method names get prefixed with
+      # a '$', and if the name is a valid javascript identifier, it will
+      # have a '.' prefix (for dot-calling), otherwise it will be
+      # wrapped in brackets to use reference notation calling.
+      def mid_to_jsid(mid)
+        if %r{\=|\+|\-|\*|\/|\!|\?|<|\>|\&|\||\^|\%|\~|\[|`} =~ mid.to_s
+          "['$#{mid}']"
+        else
+          '.$' + mid
+        end
+      end
+
+      def indent(&block)
+        compiler.indent(&block)
+      end
+
+      def current_indent
+        compiler.parser_indent
+      end
+
+      def line(*strs)
+        push fragment("\n#{current_indent}", loc: false)
+        push(*strs)
+      end
+
+      def empty_line
+        push fragment("\n", loc: false)
+      end
+
+      def js_truthy(sexp)
+        if optimize = js_truthy_optimize(sexp)
+          return optimize
+        end
+
+        helper :truthy
+        [fragment('$truthy('), expr(sexp), fragment(')')]
+      end
+
+      def js_truthy_optimize(sexp)
+        case sexp.type
+        when :send
+          receiver, mid, *args = *sexp
+          receiver_handler_class = receiver && compiler.handlers[receiver.type]
+
+          # Only operator calls on the truthy_optimize? node classes should be optimized.
+          # Monkey patch method calls might return 'self'/aka a bridged instance and need
+          # the nil check - see discussion at https://github.com/opal/opal/pull/1097
+          allow_optimization_on_type = Compiler::COMPARE.include?(mid.to_s) &&
+                                       receiver_handler_class &&
+                                       receiver_handler_class.truthy_optimize?
+
+          if allow_optimization_on_type ||
+             mid == :block_given?
+            expr(sexp)
+          elsif args.count == 1
+            case mid
+            when :==
+              helper :eqeq
+              compiler.method_calls << mid
+              [fragment('$eqeq('), expr(receiver), fragment(', '), expr(args.first), fragment(')')]
+            when :===
+              helper :eqeqeq
+              compiler.method_calls << mid
+              [fragment('$eqeqeq('), expr(receiver), fragment(', '), expr(args.first), fragment(')')]
+            when :!=
+              helper :neqeq
+              compiler.method_calls << mid
+              [fragment('$neqeq('), expr(receiver), fragment(', '), expr(args.first), fragment(')')]
+            end
+          elsif args.count == 0
+            case mid
+            when :!
+              helper :not
+              compiler.method_calls << mid
+              [fragment('$not('), expr(receiver), fragment(')')]
+            end
+          end
+        when :begin
+          if sexp.children.count == 1
+            js_truthy_optimize(sexp.children.first)
+          end
+        when :if
+          _test, true_body, false_body = *sexp
+          if true_body == s(:true)
+            # Ensure we recurse the js_truthy call on the `false_body` of the if `expr`.
+            # This transforms an expression like:
+            #
+            # $truthy($truthy(a) || b)
+            #
+            # Into:
+            #
+            # $truthy(a) || $truthy(b)
+            sexp.meta[:do_js_truthy_on_false_body] = true
+            expr(sexp)
+          elsif false_body == s(:false)
+            sexp.meta[:do_js_truthy_on_true_body] = true
+            expr(sexp)
+          end
+        end
+      end
+
+      # Usefule for safe-operator calls: foo&.bar / foo&.bar ||= baz / ...
+      #
+      # @param recvr [sexp_pushable] The receiver of the call that will be
+      #        stored in a temporary variable
+      # @yields receiver_temp [String] the name of the temporary variable
+      #         holding the ref to the original receiver, inside the block
+      #         an expr() should be pushed.
+      #
+      def conditional_send(recvr)
+        # temporary variable that stores method receiver
+        receiver_temp = scope.new_temp
+        push "#{receiver_temp} = ", recvr
+
+        # execute the sexp only if the receiver isn't nil
+        push ", (#{receiver_temp} === nil || #{receiver_temp} == null) ? nil : "
+        yield receiver_temp
+        wrap '(', ')'
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/if.rb b/lib/opal/nodes/if.rb
new file mode 100644
index 00000000..d6885cdd
--- /dev/null
+++ b/lib/opal/nodes/if.rb
@@ -0,0 +1,207 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/base'
+
+module Opal
+  module Nodes
+    class IfNode < Base
+      handle :if
+
+      children :test, :true_body, :false_body
+
+      def compile
+        if should_compile_as_simple_expression?
+          if true_body == s(:true)
+            compile_with_binary_or
+          elsif false_body == s(:false)
+            compile_with_binary_and
+          else
+            compile_with_ternary
+          end
+        else
+          compile_with_if
+        end
+      end
+
+      def compile_with_if
+        truthy = self.truthy
+        falsy = self.falsy
+
+        if falsy && !truthy
+          # Let's optimize a little bit `unless` calls.
+          push 'if (!', js_truthy(test), ') {'
+          falsy, truthy = truthy, falsy
+        else
+          push 'if (', js_truthy(test), ') {'
+        end
+
+        # skip if-body if no truthy sexp
+        indent { line stmt(truthy) } if truthy
+
+        if falsy
+          if falsy.type == :if
+            line '} else ', stmt(falsy)
+          else
+            line '} else {'
+            indent do
+              line stmt(falsy)
+            end
+
+            line '}'
+          end
+        else
+          line '}'
+
+          # This resolution isn't finite. Let's ensure this block
+          # always return something if we expect a return
+          line 'return nil;' if expects_expression?
+        end
+
+        if expects_expression?
+          if scope.await_encountered
+            wrap '(await (async function() {', '})())'
+          else
+            wrap '(function() {', '})()'
+          end
+        end
+      end
+
+      def truthy
+        returnify(true_body)
+      end
+
+      def falsy
+        returnify(false_body)
+      end
+
+      def returnify(body)
+        if expects_expression? && body
+          compiler.returns(body)
+        else
+          body
+        end
+      end
+
+      def expects_expression?
+        expr? || recv?
+      end
+
+      # There was a particular case in the past, that when we
+      # expected an expression from if, we always had to closure
+      # it. This produced an ugly code that was hard to minify.
+      # This addition tries to make a few cases compiled with
+      # a ternary operator instead and possibly a binary operator
+      # even?
+      def should_compile_as_simple_expression?
+        expects_expression? && simple?(true_body) && simple?(false_body)
+      end
+
+      def compile_with_ternary
+        truthy = true_body
+        falsy = false_body
+
+        push '('
+
+        push js_truthy(test), ' ? '
+
+        push '(', expr(truthy || s(:nil)), ') : '
+        if !falsy || falsy.type == :if
+          push expr(falsy || s(:nil))
+        else
+          push '(', expr(falsy || s(:nil)), ')'
+        end
+
+        push ')'
+      end
+
+      def compile_with_binary_and
+        if sexp.meta[:do_js_truthy_on_true_body]
+          truthy = js_truthy(true_body || s(:nil))
+        else
+          truthy = expr(true_body || s(:nil))
+        end
+
+        push '('
+        push js_truthy(test), ' && '
+        push '(', truthy, ')'
+        push ')'
+      end
+
+      def compile_with_binary_or
+        if sexp.meta[:do_js_truthy_on_false_body]
+          falsy = js_truthy(false_body || s(:nil))
+        else
+          falsy = expr(false_body || s(:nil))
+        end
+
+        push '('
+        push js_truthy(test), ' || '
+        push '(', falsy, ')'
+        push ')'
+      end
+
+      # Let's ensure there are no control flow statements inside.
+      def simple?(body)
+        case body
+        when AST::Node
+          case body.type
+          when :return, :js_return, :break, :next, :redo, :retry
+            false
+          when :xstr
+            XStringNode.single_line?(
+              XStringNode.strip_empty_children(body.children)
+            )
+          else
+            body.children.all? { |i| simple?(i) }
+          end
+        else
+          true
+        end
+      end
+    end
+
+    class IFlipFlop < Base
+      handle :iflipflop
+
+      children :from, :to
+
+      # Is this an exclusive flip flop? If no, run both branches
+      def excl
+        ""
+      end
+
+      # We create a function that we put in the top scope, that stores the state of our
+      # flip-flop. We pass to it functions that are ran with the current binding.
+      def compile
+        helper :truthy
+
+        fun_name = top_scope.new_temp
+        ff = "#{fun_name}.$$ff"
+
+        push "(typeof #{fun_name} === 'undefined' ? (#{fun_name} = function(from, to){"
+        push "  if (typeof #{ff} === 'undefined') #{ff} = false;"
+        push "  var retval = #{ff};"
+        push "  if (!#{ff}) {"
+        push "    #{ff} = retval = $truthy(from());"
+        push "  }"
+        push "  #{excl}if (#{ff}) {"
+        push "    if ($truthy(to())) #{ff} = false;"
+        push "  }"
+        push "  return retval;"
+        push "}) : #{fun_name})("
+        push "  function() { ", stmt(compiler.returns(from)), " },"
+        push "  function() { ", stmt(compiler.returns(to)), " }"
+        push ")"
+      end
+    end
+
+    class EFlipFlop < IFlipFlop
+      handle :eflipflop
+
+      # Is this an exclusive flip flop? If yes, run only a single branch
+      def excl
+        "else "
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/iter.rb b/lib/opal/nodes/iter.rb
new file mode 100644
index 00000000..c7a117bf
--- /dev/null
+++ b/lib/opal/nodes/iter.rb
@@ -0,0 +1,142 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/node_with_args'
+require 'opal/rewriters/break_finder'
+
+module Opal
+  module Nodes
+    class IterNode < NodeWithArgs
+      handle :iter
+
+      children :inline_args, :body
+
+      def compile
+        is_lambda! if scope.lambda_definition?
+
+        inline_params = nil
+
+        to_vars = identity = body_code = nil
+
+        in_scope do
+          identity = scope.identify!
+
+          inline_params = process(inline_args)
+
+          compile_arity_check
+
+          body_code = stmt(returned_body)
+
+          add_temp "self = #{identity}.$$s == null ? this : #{identity}.$$s" if @define_self
+
+          to_vars = scope.to_vars
+
+          line body_code
+
+          if scope.catch_return
+            unshift "try {\n"
+            line '} catch ($returner) { if ($returner === Opal.returner) { return $returner.$v }'
+            push ' throw $returner; }'
+          end
+        end
+
+        unshift to_vars
+
+        if await_encountered
+          unshift "async function #{identity}(", inline_params, '){'
+        else
+          unshift "function #{identity}(", inline_params, '){'
+        end
+        push '}'
+
+        blockopts = []
+        blockopts << "$$arity: #{arity}"
+        blockopts << "$$s: #{scope.self}" if @define_self
+        blockopts << "$$brk: $brk" if contains_break?
+
+        if compiler.arity_check?
+          blockopts << "$$parameters: #{parameters_code}"
+        end
+
+        # MRI expands a passed argument if the block:
+        # 1. takes a single argument that is an array
+        # 2. has more that one argument
+        # With a few exceptions:
+        # 1. mlhs arg: if a block takes |(a, b)| argument
+        # 2. trailing ',' in the arg list (|a, |)
+        # This flag on the method indicates that a block has a top level mlhs argument
+        # which means that we have to expand passed array explicitly in runtime.
+        if has_top_level_mlhs_arg?
+          blockopts << "$$has_top_level_mlhs_arg: true"
+        end
+
+        if has_trailing_comma_in_args?
+          blockopts << "$$has_trailing_comma_in_args: true"
+        end
+
+        if blockopts.length == 1
+          push ", #{arity}"
+        elsif blockopts.length > 1
+          push ', {', blockopts.join(', '), '}'
+        end
+
+        scope.nesting if @define_nesting
+        scope.relative_access if @define_relative_access
+      end
+
+      def compile_block_arg
+        if block_arg
+          scope.prepare_block
+        end
+      end
+
+      def extract_underscore_args
+        valid_args = []
+        caught_blank_argument = false
+
+        args.children.each do |arg|
+          arg_name = arg.children.first
+          if arg_name == :_
+            unless caught_blank_argument
+              caught_blank_argument = true
+              valid_args << arg
+            end
+          else
+            valid_args << arg
+          end
+        end
+
+        @sexp = @sexp.updated(
+          nil, [
+            args.updated(nil, valid_args),
+            body
+          ]
+        )
+      end
+
+      def returned_body
+        compiler.returns(body || s(:nil))
+      end
+
+      def has_top_level_mlhs_arg?
+        original_args.children.any? { |arg| arg.type == :mlhs }
+      end
+
+      def has_trailing_comma_in_args?
+        if original_args.loc && original_args.loc.expression
+          args_source = original_args.loc.expression.source
+          args_source.match(/,\s*\|/)
+        end
+      end
+
+      def arity_check_node
+        s(:iter_arity_check, original_args)
+      end
+
+      def contains_break?
+        finder = Opal::Rewriters::BreakFinder.new
+        finder.process(@sexp)
+        finder.found_break?
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/lambda.rb b/lib/opal/nodes/lambda.rb
new file mode 100644
index 00000000..74040df7
--- /dev/null
+++ b/lib/opal/nodes/lambda.rb
@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/call'
+
+module Opal
+  module Nodes
+    class LambdaNode < Base
+      handle :lambda
+      children :iter
+
+      def compile
+        helper :lambda
+
+        scope.defines_lambda do
+          push '$lambda(', expr(iter), ')'
+        end
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/literal.rb b/lib/opal/nodes/literal.rb
new file mode 100644
index 00000000..dba70f81
--- /dev/null
+++ b/lib/opal/nodes/literal.rb
@@ -0,0 +1,345 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/base'
+
+module Opal
+  module Nodes
+    class ValueNode < Base
+      handle :true, :false, :self, :nil
+
+      def compile
+        if type == :self
+          push scope.self
+        else
+          push type.to_s
+        end
+      end
+
+      def self.truthy_optimize?
+        true
+      end
+    end
+
+    class NumericNode < Base
+      handle :int, :float
+
+      children :value
+
+      def compile
+        push value.to_s
+        wrap '(', ')' if recv?
+      end
+
+      def self.truthy_optimize?
+        true
+      end
+    end
+
+    class StringNode < Base
+      handle :str
+
+      children :value
+
+      ESCAPE_CHARS = {
+        'a' => '\\u0007',
+        'e' => '\\u001b'
+      }.freeze
+
+      ESCAPE_REGEX = /(\\+)([#{ ESCAPE_CHARS.keys.join('') }])/.freeze
+
+      def translate_escape_chars(inspect_string)
+        inspect_string.gsub(ESCAPE_REGEX) do |original|
+          if Regexp.last_match(1).length.even?
+            original
+          else
+            Regexp.last_match(1).chop + ESCAPE_CHARS[Regexp.last_match(2)]
+          end
+        end
+      end
+
+      def compile
+        string_value = value
+
+        sanitized_value = string_value.inspect.gsub(/\\u\{([0-9a-f]+)\}/) do
+          code_point = Regexp.last_match(1).to_i(16)
+          to_utf16(code_point)
+        end
+        push translate_escape_chars(sanitized_value)
+
+        if RUBY_ENGINE != 'opal'
+          encoding = string_value.encoding
+
+          unless encoding == Encoding::UTF_8
+            helper :enc
+            wrap "$enc(", ", \"#{encoding.name}\")"
+          end
+        end
+
+        unless value.valid_encoding?
+          helper :binary
+          wrap "$binary(", ")"
+        end
+      end
+
+      # http://www.2ality.com/2013/09/javascript-unicode.html
+      def to_utf16(code_point)
+        ten_bits = 0b1111111111
+        u = ->(code_unit) { '\\u' + code_unit.to_s(16).upcase }
+
+        return u.call(code_point) if code_point <= 0xFFFF
+
+        code_point -= 0x10000
+
+        # Shift right to get to most significant 10 bits
+        lead_surrogate = 0xD800 + (code_point >> 10)
+
+        # Mask to get least significant 10 bits
+        tail_surrogate = 0xDC00 + (code_point & ten_bits)
+
+        u.call(lead_surrogate) + u.call(tail_surrogate)
+      end
+    end
+
+    class SymbolNode < Base
+      handle :sym
+
+      children :value
+
+      def compile
+        push value.to_s.inspect
+      end
+    end
+
+    class RegexpNode < Base
+      handle :regexp
+
+      attr_accessor :value, :flags
+
+      # https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp
+      SUPPORTED_FLAGS = /[gimuy]/.freeze
+
+      def initialize(*)
+        super
+        extract_flags_and_value
+      end
+
+      def compile
+        flags.select! do |flag|
+          if SUPPORTED_FLAGS =~ flag
+            true
+          else
+            compiler.warning "Skipping the '#{flag}' Regexp flag as it's not widely supported by JavaScript vendors."
+            false
+          end
+        end
+
+        if value.type == :str
+          compile_static_regexp
+        else
+          compile_dynamic_regexp
+        end
+      end
+
+      def compile_dynamic_regexp
+        helper :regexp
+
+        push '$regexp(['
+        value.children.each_with_index do |v, index|
+          push ', ' unless index.zero?
+          push expr(v)
+        end
+        push ']'
+        push ", '#{flags.join}'" if flags.any?
+        push ")"
+      end
+
+      def compile_static_regexp
+        value = self.value.children[0]
+        case value
+        when ''
+          push('/(?:)/')
+        else
+          push "#{Regexp.new(value).inspect}#{flags.join}"
+        end
+      end
+
+      def extract_flags_and_value
+        *values, flags_sexp = *children
+        self.flags = flags_sexp.children.map(&:to_s)
+
+        self.value = if values.empty?
+                       # empty regexp, we can process it inline
+                       s(:str, '')
+                     elsif single_line?(values)
+                       # simple plain regexp, we can put it inline
+                       values[0]
+                     else
+                       s(:dstr, *values)
+                     end
+
+        # trimming when //x provided
+        # required by parser gem, but JS doesn't support 'x' flag
+        if flags.include?('x')
+          parts = value.children.map do |part|
+            if part.is_a?(::Opal::AST::Node) && part.type == :str
+              trimmed_value = part.children[0].gsub(/\A\s*\#.*/, '').gsub(/\s/, '')
+              s(:str, trimmed_value)
+            else
+              part
+            end
+          end
+
+          self.value = value.updated(nil, parts)
+          flags.delete('x')
+        end
+
+        if value.type == :str
+          # Replacing \A -> ^, \z -> $, required for the parser gem
+          self.value = s(:str, value.children[0].gsub('\A', '^').gsub('\z', '$'))
+        end
+      end
+
+      def raw_value
+        self.value = @sexp.loc.expression.source
+      end
+
+      private
+
+      def single_line?(values)
+        return false if values.length > 1
+
+        value = values[0]
+        # JavaScript doesn't support multiline regexp
+        value.type != :str || !value.children[0].include?("\n")
+      end
+    end
+
+    # $_ = 'foo'; call if /foo/
+    # s(:if, s(:match_current_line, /foo/, true))
+    class MatchCurrentLineNode < Base
+      handle :match_current_line
+
+      children :regexp
+
+      # Here we just convert it to
+      # ($_ =~ regexp)
+      # and let :send node to handle it
+      def compile
+        gvar_sexp = s(:gvar, :$_)
+        send_node = s(:send, gvar_sexp, :=~, regexp)
+        push expr(send_node)
+      end
+    end
+
+    class DynamicStringNode < Base
+      handle :dstr
+
+      def compile
+        if children.length > 1 && children.first.type == :str
+          skip_empty = true
+        else
+          push '""'
+        end
+
+        children.each do |part|
+          if skip_empty
+            skip_empty = false
+          else
+            push ' + '
+          end
+
+          if part.type == :str
+            push expr(part)
+          else
+            push '(', expr(part), ')'
+          end
+
+          wrap '(', ')' if recv?
+        end
+      end
+    end
+
+    class DynamicSymbolNode < DynamicStringNode
+      handle :dsym
+    end
+
+    class RangeNode < Base
+      children :start, :finish
+
+      SIMPLE_CHILDREN_TYPES = %i[int float str sym].freeze
+
+      def compile
+        if compile_inline?
+          helper :range
+          compile_inline
+        else
+          compile_range_initialize
+        end
+      end
+
+      def compile_inline?
+        (
+          !start || (start.type && SIMPLE_CHILDREN_TYPES.include?(start.type))
+        ) && (
+          !finish || (finish.type && SIMPLE_CHILDREN_TYPES.include?(finish.type))
+        )
+      end
+
+      def compile_inline
+        raise NotImplementedError
+      end
+
+      def compile_range_initialize
+        raise NotImplementedError
+      end
+    end
+
+    class InclusiveRangeNode < RangeNode
+      handle :irange
+
+      def compile_inline
+        push '$range(', expr_or_nil(start), ', ', expr_or_nil(finish), ', false)'
+      end
+
+      def compile_range_initialize
+        push 'Opal.Range.$new(', expr_or_nil(start), ', ', expr_or_nil(finish), ', false)'
+      end
+    end
+
+    class ExclusiveRangeNode < RangeNode
+      handle :erange
+
+      def compile_inline
+        push '$range(', expr_or_nil(start), ', ', expr_or_nil(finish), ', true)'
+      end
+
+      def compile_range_initialize
+        push 'Opal.Range.$new(', expr_or_nil(start), ',', expr_or_nil(finish), ', true)'
+      end
+    end
+
+    # 0b1111r -> s(:rational, (15/1))
+    # -0b1111r -> s(:rational, (-15/1))
+    class RationalNode < Base
+      handle :rational
+
+      children :value
+
+      def compile
+        push "#{top_scope.absolute_const}('Rational').$new(#{value.numerator}, #{value.denominator})"
+      end
+    end
+
+    # 0b1110i -> s(:complex, (0+14i))
+    # -0b1110i -> s(:complex, (0-14i))
+    class ComplexNode < Base
+      handle :complex
+
+      children :value
+
+      def compile
+        push "#{top_scope.absolute_const}('Complex').$new(#{value.real}, #{value.imag})"
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/logic.rb b/lib/opal/nodes/logic.rb
new file mode 100644
index 00000000..7f3dbcd7
--- /dev/null
+++ b/lib/opal/nodes/logic.rb
@@ -0,0 +1,186 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/base'
+
+module Opal
+  module Nodes
+    class NextNode < Base
+      handle :next
+
+      def compile
+        if in_while?
+          push 'continue;'
+        elsif scope.iter?
+          push 'return ', expr_or_nil(value), ';'
+        else
+          error 'Invalid next'
+        end
+      end
+
+      def value
+        case children.size
+        when 0
+          s(:nil)
+        when 1
+          children.first
+        else
+          s(:array, *children)
+        end
+      end
+    end
+
+    class BreakNode < Base
+      handle :break
+
+      children :value
+
+      def compile
+        if in_while?
+          compile_while
+        elsif scope.iter?
+          compile_iter
+        else
+          error 'void value expression: cannot use break outside of iter/while'
+        end
+      end
+
+      def compile_while
+        if while_loop[:closure]
+          push 'return ', expr_or_nil(value)
+        else
+          push 'break;'
+        end
+      end
+
+      def compile_iter
+        error 'break must be used as a statement' unless stmt?
+
+        line 'Opal.brk(', break_val, ', $brk)'
+      end
+
+      def break_val
+        if value.nil?
+          expr(s(:nil))
+        else
+          expr(value)
+        end
+      end
+    end
+
+    class RedoNode < Base
+      handle :redo
+
+      def compile
+        if in_while?
+          compile_while
+        elsif scope.iter?
+          compile_iter
+        else
+          push 'REDO()'
+        end
+      end
+
+      def compile_while
+        while_loop[:use_redo] = true
+        push "#{while_loop[:redo_var]} = true; continue;"
+      end
+
+      def compile_iter
+        helper :slice
+        push "return #{scope.identity}.apply(null, $slice.call(arguments))"
+      end
+    end
+
+    class SplatNode < Base
+      handle :splat
+
+      children :value
+
+      def empty_splat?
+        value == s(:array)
+      end
+
+      def compile
+        if empty_splat?
+          push '[]'
+        else
+          helper :to_a
+          push '$to_a(', recv(value), ')'
+        end
+      end
+    end
+
+
+    class ReturnNode < Base
+      handle :return
+
+      children :value
+
+      def return_val
+        if value.nil?
+          expr(s(:nil))
+        elsif children.size > 1
+          expr(s(:array, *children))
+        else
+          expr(value)
+        end
+      end
+
+      def return_in_iter?
+        if (scope.iter? && !scope.lambda?) && parent_def = scope.find_parent_def
+          parent_def
+        end
+      end
+
+      def return_expr_in_def?
+        return scope if expr? && (scope.def? || scope.lambda?)
+      end
+
+      def scope_to_catch_return
+        return_in_iter? || return_expr_in_def?
+      end
+
+      def compile
+        if def_scope = scope_to_catch_return
+          def_scope.catch_return = true
+          push 'Opal.ret(', return_val, ')'
+        elsif stmt?
+          push 'return ', return_val
+        else
+          error 'void value expression: cannot return as an expression'
+        end
+      end
+    end
+
+    class JSReturnNode < Base
+      handle :js_return
+
+      children :value
+
+      def compile
+        push 'return '
+        push expr(value)
+      end
+    end
+
+    class JSTempNode < Base
+      handle :js_tmp
+
+      children :value
+
+      def compile
+        push value.to_s
+      end
+    end
+
+    class BlockPassNode < Base
+      handle :block_pass
+
+      children :value
+
+      def compile
+        push expr(s(:send, value, :to_proc, s(:arglist)))
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/masgn.rb b/lib/opal/nodes/masgn.rb
new file mode 100644
index 00000000..3a908e73
--- /dev/null
+++ b/lib/opal/nodes/masgn.rb
@@ -0,0 +1,111 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/base'
+
+module Opal
+  module Nodes
+    class MassAssignNode < Base
+      SIMPLE_ASSIGNMENT = %i[lvasgn ivasgn lvar gvasgn cdecl casgn].freeze
+
+      handle :masgn
+      children :lhs, :rhs
+
+      def compile
+        array = scope.new_temp
+
+        if rhs.type == :array
+          push "#{array} = ", expr(rhs)
+          rhs_len = rhs.children.any? { |c| c.type == :splat } ? nil : rhs.children.size
+          compile_masgn(lhs.children, array, rhs_len)
+          push ", #{array}" # a mass assignment evaluates to the RHS
+        else
+          helper :to_ary
+          retval = scope.new_temp
+          push "#{retval} = ", expr(rhs)
+          push ", #{array} = $to_ary(#{retval})"
+          compile_masgn(lhs.children, array)
+          push ", #{retval}"
+          scope.queue_temp(retval)
+        end
+
+        scope.queue_temp(array)
+      end
+
+      # 'len' is how many rhs items are we sure we have
+      def compile_masgn(lhs_items, array, len = nil)
+        pre_splat  = lhs_items.take_while { |child| child.type != :splat }
+        post_splat = lhs_items.drop(pre_splat.size)
+
+        pre_splat.each_with_index do |child, idx|
+          compile_assignment(child, array, idx, len)
+        end
+
+        unless post_splat.empty?
+          splat = post_splat.shift
+
+          if post_splat.empty? # trailing splat
+            if part = splat.children[0]
+              helper :slice
+              part = part.dup << s(:js_tmp, "$slice.call(#{array}, #{pre_splat.size})")
+              push ', '
+              push expr(part)
+            end
+          else
+            tmp = scope.new_temp # end index for items consumed by splat
+            push ", #{tmp} = #{array}.length - #{post_splat.size}"
+            push ", #{tmp} = (#{tmp} < #{pre_splat.size}) ? #{pre_splat.size} : #{tmp}"
+
+            if part = splat.children[0]
+              helper :slice
+              part = part.dup << s(:js_tmp, "$slice.call(#{array}, #{pre_splat.size}, #{tmp})")
+              push ', '
+              push expr(part)
+            end
+
+            post_splat.each_with_index do |child, idx|
+              if idx == 0
+                compile_assignment(child, array, tmp)
+              else
+                compile_assignment(child, array, "#{tmp} + #{idx}")
+              end
+            end
+
+            scope.queue_temp(tmp)
+          end
+        end
+      end
+
+      def compile_assignment(child, array, idx, len = nil)
+        assign =
+          if !len || idx >= len
+            s(:js_tmp, "(#{array}[#{idx}] == null ? nil : #{array}[#{idx}])")
+          else
+            s(:js_tmp, "#{array}[#{idx}]")
+          end
+
+        part = child.updated
+        if SIMPLE_ASSIGNMENT.include?(child.type)
+          part = part.updated(nil, part.children + [assign])
+        elsif child.type == :send
+          part = part.updated(nil, part.children + [assign])
+        elsif child.type == :attrasgn
+          part.last << assign
+        elsif child.type == :mlhs
+          helper :to_ary
+          # nested destructuring
+          tmp = scope.new_temp
+          push ", (#{tmp} = $to_ary(#{assign.children[0]})"
+          compile_masgn(child.children, tmp)
+          push ')'
+          scope.queue_temp(tmp)
+          return
+        else
+          raise "Bad child node in masgn LHS: #{child}. LHS: #{lhs}"
+        end
+
+        push ', '
+        push expr(part)
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/module.rb b/lib/opal/nodes/module.rb
new file mode 100644
index 00000000..05047e8a
--- /dev/null
+++ b/lib/opal/nodes/module.rb
@@ -0,0 +1,69 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/scope'
+
+module Opal
+  module Nodes
+    class ModuleNode < ScopeNode
+      handle :module
+
+      children :cid, :body
+
+      def compile
+        name, base = name_and_base
+        helper :module
+
+        if body.nil?
+          # Simplified compile for empty body
+          if stmt?
+            unshift '$module(', base, ", '#{name}')"
+          else
+            unshift '($module(', base, ", '#{name}'), nil)"
+          end
+        else
+          line "  var self = $module($base, '#{name}');"
+          in_scope do
+            scope.name = name
+            compile_body
+          end
+
+          if await_encountered
+            await_begin = '(await '
+            await_end = ')'
+            async = 'async '
+            parent.await_encountered = true
+          else
+            await_begin, await_end, async = '', '', ''
+          end
+
+          unshift "#{await_begin}(#{async}function($base#{', $parent_nesting' if @define_nesting}) {"
+          line '})(', base, "#{', ' + scope.nesting if @define_nesting})#{await_end}"
+        end
+      end
+
+      private
+
+      # cid is always s(:const, scope_sexp_or_nil, :ConstName)
+      def name_and_base
+        base, name = cid.children
+
+        if base.nil?
+          [name, "#{scope.nesting}[0]"]
+        else
+          [name, expr(base)]
+        end
+      end
+
+      def compile_body
+        body_code = stmt(compiler.returns(body))
+        empty_line
+
+        add_temp "$nesting = [self].concat($parent_nesting)" if @define_nesting
+        add_temp '$$ = Opal.$r($nesting)' if @define_relative_access
+
+        line scope.to_vars
+        line body_code
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/node_with_args.rb b/lib/opal/nodes/node_with_args.rb
new file mode 100644
index 00000000..cf7bd2ff
--- /dev/null
+++ b/lib/opal/nodes/node_with_args.rb
@@ -0,0 +1,41 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/scope'
+require 'opal/nodes/args/parameters'
+
+module Opal
+  module Nodes
+    class NodeWithArgs < ScopeNode
+      attr_reader :used_kwargs
+      attr_accessor :arity
+      attr_reader :original_args
+
+      def initialize(*)
+        super
+
+        @original_args = @sexp.meta[:original_args]
+        @used_kwargs = []
+        @arity = 0
+      end
+
+      def arity_check_node
+        s(:arity_check, original_args)
+      end
+
+      # Returns code used in debug mode to check arity of method call
+      def compile_arity_check
+        push process(arity_check_node)
+      end
+
+      def compile_block_arg
+        if scope.uses_block?
+          scope.prepare_block
+        end
+      end
+
+      def parameters_code
+        Args::Parameters.new(original_args).to_code
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/rescue.rb b/lib/opal/nodes/rescue.rb
new file mode 100644
index 00000000..c280414b
--- /dev/null
+++ b/lib/opal/nodes/rescue.rb
@@ -0,0 +1,222 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/base'
+
+module Opal
+  module Nodes
+    class EnsureNode < Base
+      handle :ensure
+
+      children :begn, :ensr
+
+      def compile
+        push 'try {'
+
+        in_ensure do
+          line stmt(body_sexp)
+        end
+
+        line '} finally {'
+
+        indent do
+          if has_rescue_else?
+            # $no_errors indicates thate there were no error raised
+            unshift 'var $no_errors = true; '
+
+            # when there's a begin;rescue;else;ensure;end statement,
+            # ruby returns a result of the 'else' branch
+            # but invokes it before 'ensure'.
+            # so, here we
+            # 1. save the result of calling else to $rescue_else_result
+            # 2. call ensure
+            # 2. return $rescue_else_result
+            line 'var $rescue_else_result;'
+            line 'if ($no_errors) { '
+            indent do
+              line '$rescue_else_result = (function() {'
+              indent do
+                line stmt(rescue_else_code)
+              end
+              line '})();'
+            end
+            line '}'
+            line compiler.process(ensr_sexp, @level)
+            line 'if ($no_errors) { return $rescue_else_result; }'
+          else
+            line compiler.process(ensr_sexp, @level)
+          end
+        end
+
+        line '}'
+
+        if wrap_in_closure?
+          if scope.await_encountered
+            wrap '(await (async function() { ', '; })())'
+          else
+            wrap '(function() { ', '; })()'
+          end
+        end
+      end
+
+      def body_sexp
+        if wrap_in_closure?
+          compiler.returns(begn)
+        else
+          begn
+        end
+      end
+
+      def ensr_sexp
+        ensr || s(:nil)
+      end
+
+      def wrap_in_closure?
+        recv? || expr? || has_rescue_else?
+      end
+
+      def rescue_else_code
+        rescue_else_code = scope.rescue_else_sexp
+        rescue_else_code = compiler.returns(rescue_else_code) unless stmt?
+        rescue_else_code
+      end
+    end
+
+    class RescueNode < Base
+      handle :rescue
+
+      children :body
+
+      def compile
+        scope.rescue_else_sexp = children[1..-1].detect { |sexp| sexp && sexp.type != :resbody }
+        _has_rescue_handlers = false
+
+        if handle_rescue_else_manually?
+          line 'var $no_errors = true;'
+        end
+
+        in_rescue(self) do
+          push 'try {'
+          indent do
+            line stmt(body_code)
+          end
+          line '} catch ($err) {'
+
+          indent do
+            if has_rescue_else?
+              line '$no_errors = false;'
+            end
+
+            children[1..-1].each_with_index do |child, idx|
+              # counting only rescue, ignoring rescue-else statement
+              next unless child && child.type == :resbody
+              _has_rescue_handlers = true
+
+              push ' else ' unless idx == 0
+              line process(child, @level)
+            end
+
+            # if no resbodys capture our error, then rethrow
+            push ' else { throw $err; }'
+          end
+
+          line '}'
+
+          if handle_rescue_else_manually?
+            # here we must add 'finally' explicitly
+            push 'finally {'
+            indent do
+              line 'if ($no_errors) { '
+              indent do
+                line stmt(rescue_else_code)
+              end
+              line '}'
+            end
+            push '}'
+          end
+
+          wrap "#{retry_id}: do { ", ' break; } while(1)' if retry_id
+        end
+
+        # Wrap a try{} catch{} into a function
+        # when it's an expression
+        # or when there's a method call after begin;rescue;end
+        if expr? || recv?
+          if scope.await_encountered
+            wrap '(await (async function() { ', '})())'
+          else
+            wrap '(function() { ', '})()'
+          end
+        end
+      end
+
+      def body_code
+        body_code = (body.nil? || body.type == :resbody ? s(:nil) : body)
+        body_code = compiler.returns(body_code) unless stmt?
+        body_code
+      end
+
+      def rescue_else_code
+        rescue_else_code = scope.rescue_else_sexp
+        rescue_else_code = compiler.returns(rescue_else_code) unless stmt?
+        rescue_else_code
+      end
+
+      # Returns true when there's no 'ensure' statement
+      #  wrapping current rescue.
+      #
+      def handle_rescue_else_manually?
+        !in_ensure? && has_rescue_else?
+      end
+
+      def gen_retry_id
+        @retry_id ||= scope.gen_retry_id
+      end
+
+      attr_reader :retry_id
+    end
+
+    class ResBodyNode < Base
+      handle :resbody
+
+      children :klasses_sexp, :lvar, :body
+
+      def compile
+        push 'if (Opal.rescue($err, ', expr(klasses), ')) {'
+        indent do
+          if lvar
+            push expr(lvar.updated(nil, [*lvar.children, s(:js_tmp, '$err')]))
+          end
+
+          # Need to ensure we clear the current exception out after the rescue block ends
+          line 'try {'
+          indent do
+            in_resbody do
+              line stmt(rescue_body)
+            end
+          end
+          line '} finally { Opal.pop_exception(); }'
+        end
+        line '}'
+      end
+
+      def klasses
+        klasses_sexp || s(:array, s(:const, nil, :StandardError))
+      end
+
+      def rescue_body
+        body_code = (body || s(:nil))
+        body_code = compiler.returns(body_code) unless stmt?
+        body_code
+      end
+    end
+
+    class RetryNode < Base
+      handle :retry
+
+      def compile
+        error 'Invalid retry' unless in_resbody?
+        push "continue #{scope.current_rescue.gen_retry_id}"
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/scope.rb b/lib/opal/nodes/scope.rb
new file mode 100644
index 00000000..225f12e2
--- /dev/null
+++ b/lib/opal/nodes/scope.rb
@@ -0,0 +1,416 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/base'
+
+module Opal
+  module Nodes
+    class ScopeNode < Base
+      # Every scope can have a parent scope
+      attr_accessor :parent
+
+      # The class or module name if this scope is a class scope
+      attr_accessor :name
+
+      # The given block name for a def scope
+      attr_accessor :block_name
+
+      attr_reader :scope_name
+      attr_reader :locals
+      attr_reader :ivars
+      attr_reader :gvars
+
+      attr_accessor :mid
+
+      # true if singleton def, false otherwise
+      attr_accessor :defs
+
+      # used by modules to know what methods to donate to includees
+      attr_reader :methods
+
+      attr_accessor :catch_return, :has_break, :has_retry
+
+      attr_accessor :rescue_else_sexp
+
+      def initialize(*)
+        super
+
+        @locals   = []
+        @temps    = []
+        @args     = []
+        @ivars    = []
+        @gvars    = []
+        @parent   = nil
+        @queue    = []
+        @unique   = 'a'
+        @while_stack = []
+        @identity = nil
+        @defs     = nil
+
+        @methods = []
+
+        @uses_block = false
+        @in_ensure = false
+
+        # used by classes to store all ivars used in direct def methods
+        @proto_ivars = []
+      end
+
+      def in_scope
+        indent do
+          @parent = compiler.scope
+          compiler.scope = self
+          yield self
+          compiler.scope = @parent
+        end
+      end
+
+      # Returns true if this scope is a class/module body scope
+      def class_scope?
+        @type == :class || @type == :module
+      end
+
+      # Returns true if this is strictly a class scope
+      def class?
+        @type == :class
+      end
+
+      # True if this is a module scope
+      def module?
+        @type == :module
+      end
+
+      def sclass?
+        @type == :sclass
+      end
+
+      # Returns true if this is a top scope (main file body)
+      def top?
+        @type == :top
+      end
+
+      # True if a block/iter scope
+      def iter?
+        @type == :iter
+      end
+
+      def def?
+        @type == :def || @type == :defs
+      end
+
+      def lambda?
+        iter? && @is_lambda
+      end
+
+      def is_lambda! # rubocop:disable Naming/PredicateName
+        @is_lambda = true
+      end
+
+      def defines_lambda
+        @lambda_definition = true
+        yield
+        @lambda_definition = false
+      end
+
+      def lambda_definition?
+        @lambda_definition
+      end
+
+      # Is this a normal def method directly inside a class? This is
+      # used for optimizing ivars as we can set them to nil in the
+      # class body
+      def def_in_class?
+        !@defs && @type == :def && @parent && @parent.class?
+      end
+
+      ##
+      # Vars to use inside each scope
+      def to_vars
+        vars = @temps.dup
+        vars.push(*@locals.map { |l| "#{l} = nil" })
+
+        iv = ivars.map do |ivar|
+          "if (self#{ivar} == null) self#{ivar} = nil;\n"
+        end
+
+        gv = gvars.map do |gvar|
+          "if ($gvars#{gvar} == null) $gvars#{gvar} = nil;\n"
+        end
+
+        if class? && !@proto_ivars.empty?
+          vars << '$proto = self.$$prototype'
+        end
+
+        indent = @compiler.parser_indent
+        str  = vars.empty? ? '' : "var #{vars.join ', '};\n"
+        str += "#{indent}#{iv.join indent}" unless ivars.empty?
+        str += "#{indent}#{gv.join indent}" unless gvars.empty?
+
+        if class? && !@proto_ivars.empty?
+          pvars = @proto_ivars.map { |i| "$proto#{i}" }.join(' = ')
+          str = "#{str}\n#{indent}#{pvars} = nil;"
+        end
+
+        fragment(str)
+      end
+
+      def add_scope_ivar(ivar)
+        if def_in_class?
+          @parent.add_proto_ivar ivar
+        else
+          @ivars << ivar unless @ivars.include? ivar
+        end
+      end
+
+      def add_scope_gvar(gvar)
+        @gvars << gvar unless @gvars.include? gvar
+      end
+
+      def add_proto_ivar(ivar)
+        @proto_ivars << ivar unless @proto_ivars.include? ivar
+      end
+
+      def add_arg(arg)
+        @args << arg unless @args.include? arg
+        arg
+      end
+
+      def add_scope_local(local)
+        return if has_local? local
+
+        @locals << local
+      end
+
+      def has_local?(local)
+        return true if @locals.include?(local) || @args.include?(local) || @temps.include?(local)
+        return @parent.has_local?(local) if @parent && @type == :iter
+        false
+      end
+
+      def scope_locals
+        locals = @locals | @args | (@parent && @type == :iter ? @parent.scope_locals : [])
+        locals.reject { |i| i.to_s.start_with?('$') }
+      end
+
+      def add_scope_temp(tmp)
+        return if has_temp?(tmp)
+
+        @temps.push(tmp)
+      end
+
+      def has_temp?(tmp)
+        @temps.include? tmp
+      end
+
+      def new_temp
+        return @queue.pop unless @queue.empty?
+
+        tmp = next_temp
+        @temps << tmp
+        tmp
+      end
+
+      def next_temp
+        tmp = nil
+        loop do
+          tmp = "$#{@unique}"
+          @unique = @unique.succ
+          break unless has_local?(tmp)
+        end
+        tmp
+      end
+
+      def queue_temp(name)
+        @queue << name
+      end
+
+      def push_while
+        info = {}
+        @while_stack.push info
+        info
+      end
+
+      def pop_while
+        @while_stack.pop
+      end
+
+      def in_while?
+        !@while_stack.empty?
+      end
+
+      def uses_block!
+        if @type == :iter && @parent
+          @parent.uses_block!
+        else
+          @uses_block = true
+          identify!
+        end
+      end
+
+      def identify!(name = nil)
+        return @identity if @identity
+
+        if valid_name? mid
+          # There are some special utf8 chars that can be used as valid JS
+          # identifiers, some examples:
+          #
+          # utf8_pond = 'ⵌ'
+          # utf8_question = 'ʔ̣'
+          # utf8_exclamation 'ǃ'
+          #
+          # For now we're just using $$, to maintain compatibility with older IEs.
+          @identity = "$$#{mid}"
+        else
+          # Parent scope is the defining module/class
+          name ||= [(parent && (parent.name || parent.scope_name)), mid].compact.join('_')
+          @identity = @compiler.unique_temp(name)
+        end
+
+        @identity
+      end
+
+      attr_reader :identity
+
+      def find_parent_def
+        scope = self
+        while scope = scope.parent
+          if scope.def? || scope.lambda?
+            return scope
+          end
+        end
+
+        nil
+      end
+
+      def super_chain
+        chain, scope, defn, mid = [], self, 'null', 'null'
+
+        while scope
+          if scope.type == :iter
+            chain << scope.identify!
+            scope = scope.parent if scope.parent
+
+          elsif %i[def defs].include?(scope.type)
+            defn = scope.identify!
+            mid  = "'#{scope.mid}'"
+            break
+          else
+            break
+          end
+        end
+
+        [chain, defn, mid]
+      end
+
+      def uses_block?
+        @uses_block
+      end
+
+      def has_rescue_else?
+        !rescue_else_sexp.nil?
+      end
+
+      def in_rescue(node)
+        @rescues ||= []
+
+        @rescues.push(node)
+        result = yield
+        @rescues.pop
+
+        result
+      end
+
+      def current_rescue
+        @rescues.last
+      end
+
+      def in_resbody
+        return unless block_given?
+
+        @in_resbody = true
+        result = yield
+        @in_resbody = false
+
+        result
+      end
+
+      def in_resbody?
+        @in_resbody
+      end
+
+      def in_ensure
+        return unless block_given?
+
+        @in_ensure = true
+        result = yield
+        @in_ensure = false
+
+        result
+      end
+
+      def in_ensure?
+        @in_ensure
+      end
+
+      def gen_retry_id
+        @next_retry_id ||= 'retry_0'
+        @next_retry_id = @next_retry_id.succ
+      end
+
+      def accepts_using?
+        # IterNode of a special kind of Module.new {} is accepted...
+        # though we don't check for it that thoroughly.
+        [TopNode, ModuleNode, ClassNode, IterNode].include? self.class
+      end
+
+      def collect_refinements_temps(temps = [])
+        temps << @refinements_temp if @refinements_temp
+        return parent.collect_refinements_temps(temps) if parent
+        temps
+      end
+
+      def new_refinements_temp
+        var = compiler.unique_temp("$refn")
+        add_scope_local(var)
+        var
+      end
+
+      def refinements_temp
+        prev, curr = @refinements_temp, new_refinements_temp
+        @refinements_temp = curr
+        [prev, curr]
+      end
+
+      # Returns 'self', but also ensures that the self variable is set
+      def self
+        @define_self = true
+        'self'
+      end
+
+      # Returns '$nesting', but also ensures we compile the nesting chain
+      def nesting
+        @define_nesting = true
+        '$nesting'
+      end
+
+      # Returns '$$', but also ensures we compile it
+      def relative_access
+        @define_relative_access = @define_nesting = true
+        '$$'
+      end
+
+      def prepare_block(block_name = nil)
+        scope_name = scope.identity
+        self.block_name = block_name if block_name
+
+        add_temp "#{self.block_name} = #{scope_name}.$$p || nil"
+
+        unless @block_prepared
+          line "delete #{scope_name}.$$p;"
+          @block_prepared = true
+        end
+      end
+
+      attr_accessor :await_encountered
+    end
+  end
+end
diff --git a/lib/opal/nodes/singleton_class.rb b/lib/opal/nodes/singleton_class.rb
new file mode 100644
index 00000000..25aadab0
--- /dev/null
+++ b/lib/opal/nodes/singleton_class.rb
@@ -0,0 +1,29 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/scope'
+
+module Opal
+  module Nodes
+    class SingletonClassNode < ScopeNode
+      handle :sclass
+
+      children :object, :body
+
+      def compile
+        push '(function(self, $parent_nesting) {'
+
+        in_scope do
+          body_stmt = stmt(compiler.returns(body))
+
+          add_temp '$nesting = [self].concat($parent_nesting)' if @define_nesting
+          add_temp '$$ = Opal.$r($nesting)' if @define_relative_access
+
+          line scope.to_vars
+          line body_stmt
+        end
+
+        line '})(Opal.get_singleton_class(', recv(object), "), #{scope.nesting})"
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/super.rb b/lib/opal/nodes/super.rb
new file mode 100644
index 00000000..ce8c380b
--- /dev/null
+++ b/lib/opal/nodes/super.rb
@@ -0,0 +1,224 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/base'
+
+module Opal
+  module Nodes
+    # This base class is used just to child the find_super_dispatcher method
+    # body. This is then used by actual super calls, or a defined?(super) style
+    # call.
+    class BaseSuperNode < CallNode
+      def initialize(*)
+        super
+        args = *@sexp
+        *rest, last_child = *args
+
+        if last_child && %i[iter block_pass].include?(last_child.type)
+          @iter = last_child
+          args = rest
+        else
+          @iter = s(:js_tmp, 'null')
+        end
+
+        @arglist = s(:arglist, *args)
+        @recvr = s(:self)
+      end
+
+      def compile_using_send
+        helper :send2
+
+        push '$send2('
+        compile_receiver
+        compile_method_body
+        compile_method_name
+        compile_arguments
+        compile_block_pass
+        push ')'
+      end
+
+      private
+
+      # Using super in a block inside a method is allowed, e.g.
+      # def a
+      #  { super }
+      # end
+      #
+      # This method finds returns a closest s(:def) (or s(:defs))
+      def def_scope
+        @def_scope ||= scope.def? ? scope : scope.find_parent_def
+      end
+
+      def defined_check_param
+        'false'
+      end
+
+      def implicit_arguments_param
+        'false'
+      end
+
+      def method_id
+        def_scope.mid.to_s
+      end
+
+      def def_scope_identity
+        def_scope.identify!(def_scope.mid)
+      end
+
+      def allow_stubs
+        'true'
+      end
+
+      def super_method_invocation
+        helper :find_super
+        "$find_super(#{scope.self}, '#{method_id}', #{def_scope_identity}, #{defined_check_param}, #{allow_stubs})"
+      end
+
+      def super_block_invocation
+        helper :find_block_super
+        chain, cur_defn, mid = scope.super_chain
+        trys = chain.map { |c| "#{c}.$$def" }.join(' || ')
+        "$find_block_super(#{scope.self}, #{mid}, (#{trys} || #{cur_defn}), #{defined_check_param}, #{implicit_arguments_param})"
+      end
+
+      def compile_method_body
+        push ', '
+        if scope.def?
+          push super_method_invocation
+        elsif scope.iter?
+          push super_block_invocation
+        else
+          raise 'super must be called from method body or block'
+        end
+      end
+
+      def compile_method_name
+        if scope.def?
+          push ", '#{method_id}'"
+        elsif scope.iter?
+          _chain, _cur_defn, mid = scope.super_chain
+          push ", #{mid}"
+        end
+      end
+    end
+
+    class DefinedSuperNode < BaseSuperNode
+      handle :defined_super
+
+      def allow_stubs
+        'false'
+      end
+
+      def defined_check_param
+        'true'
+      end
+
+      def compile
+        compile_receiver
+        compile_method_body
+
+        wrap '((', ') != null ? "super" : nil)'
+      end
+    end
+
+    # super with explicit args
+    class SuperNode < BaseSuperNode
+      handle :super
+
+      def initialize(*)
+        super
+
+        if scope.def?
+          scope.uses_block!
+        end
+      end
+
+      def compile
+        compile_using_send
+      end
+    end
+
+    # super with implicit args
+    class ZsuperNode < SuperNode
+      handle :zsuper
+
+      def implicit_arguments_param
+        'true'
+      end
+
+      def initialize(*)
+        super
+
+        # preserve a block if we have one already but otherwise, assume a block is coming from higher
+        # up the chain
+        unless iter.type == :iter
+          # Need to support passing block up even if it's not referenced in this method at all
+          scope.uses_block!
+          @iter = s(:js_tmp, scope.block_name || '$yield')
+        end
+      end
+
+      def compile
+        if def_scope
+          implicit_args = implicit_arglist
+          # If the method we're in has a block and we're using a default super call with no args, we need to grab the block
+          # If an iter (block via braces) is provided, that takes precedence
+          if block_name && !iter
+            block_pass = s(:block_pass, s(:lvar, block_name))
+            implicit_args << block_pass
+          end
+
+          @arglist = s(:arglist, *implicit_args)
+        end
+
+        compile_using_send
+      end
+
+      def implicit_arglist
+        args = []
+        kwargs = []
+        same_arg_counter = Hash.new(0)
+
+        def_scope.original_args.children.each do |sexp|
+          lvar_name = sexp.children[0]
+
+          case sexp.type
+          when :arg, :optarg
+            arg_node = s(:lvar, lvar_name)
+            #   def m(_, _)
+            # is compiled to
+            #   function $$m(_, __$2)
+            # See Opal::Node::ArgsNode
+            if lvar_name[0] == '_'
+              same_arg_counter[lvar_name] += 1
+              arg_node = s(:js_tmp, "#{lvar_name}_$#{same_arg_counter[lvar_name]}") if same_arg_counter[lvar_name] > 1
+            end
+            args << arg_node
+          when :restarg
+            arg_node = lvar_name ? s(:lvar, lvar_name) : s(:js_tmp, '$rest_arg')
+            args << s(:splat, arg_node)
+          when :kwarg, :kwoptarg
+            key_name = sexp.meta[:arg_name]
+            kwargs << s(:pair, s(:sym, key_name), s(:lvar, lvar_name))
+          when :kwrestarg
+            arg_node = lvar_name ? s(:lvar, lvar_name) : s(:js_tmp, '$kw_rest_arg')
+            kwargs << s(:kwsplat, arg_node)
+          end
+        end
+
+        args << s(:hash, *kwargs) unless kwargs.empty?
+        args
+      end
+
+      def block_name
+        case def_scope
+        when Opal::Nodes::IterNode
+          def_scope.block_name
+        when Opal::Nodes::DefNode
+          def_scope.block_name
+        else
+          raise "Don't know what to do with super in the scope #{def_scope}"
+        end
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/top.rb b/lib/opal/nodes/top.rb
new file mode 100644
index 00000000..fe533fb6
--- /dev/null
+++ b/lib/opal/nodes/top.rb
@@ -0,0 +1,121 @@
+# frozen_string_literal: true
+
+require 'pathname'
+require 'opal/version'
+require 'opal/nodes/scope'
+
+module Opal
+  module Nodes
+    # Generates code for an entire file, i.e. the base sexp
+    class TopNode < ScopeNode
+      handle :top
+
+      children :body
+
+      def compile
+        compiler.top_scope = self
+        compiler.dynamic_cache_result = true if sexp.meta[:dynamic_cache_result]
+
+        push version_comment
+
+        in_scope do
+          if body == s(:nil)
+            # A shortpath for empty (stub?) modules.
+            line 'return Opal.nil;'
+          else
+            line '"use strict";' if compiler.use_strict?
+
+            body_code = stmt(stmts)
+            body_code = [body_code] unless body_code.is_a?(Array)
+
+            if compiler.eval?
+              add_temp '$nesting = self.$$is_a_module ? [self] : [self.$$class]' if @define_nesting
+            else
+              add_temp 'self = Opal.top' if @define_self
+              add_temp '$nesting = []' if @define_nesting
+            end
+            add_temp '$$ = Opal.$r($nesting)' if @define_relative_access
+
+            add_temp 'nil = Opal.nil'
+            add_temp '$$$ = Opal.$$$' if @define_absolute_const
+
+            add_used_helpers
+            line scope.to_vars
+
+            compile_method_stubs
+            compile_irb_vars
+            compile_end_construct
+
+            line body_code
+          end
+        end
+        opening
+        closing
+      end
+
+      def opening
+        async_prefix = "async " if await_encountered
+
+        if compiler.requirable?
+          unshift "Opal.modules[#{Opal::Compiler.module_name(compiler.file).inspect}] = #{async_prefix}function(Opal) {"
+        elsif compiler.eval?
+          unshift "(#{async_prefix}function(Opal, self) {"
+        elsif compiler.esm?
+          unshift "export default Opal.queue(#{async_prefix}function(Opal) {"
+        else
+          unshift "Opal.queue(#{async_prefix}function(Opal) {"
+        end
+      end
+
+      def closing
+        if compiler.requirable?
+          line "};\n"
+        elsif compiler.eval?
+          line "})(Opal, self);"
+        else
+          line "});\n"
+        end
+      end
+
+      def stmts
+        compiler.returns(body)
+      end
+
+      # Returns '$$$', but also ensures that the '$$$' variable is set
+      def absolute_const
+        @define_absolute_const = true
+        '$$$'
+      end
+
+      def compile_irb_vars
+        if compiler.irb?
+          line 'if (!Opal.irb_vars) { Opal.irb_vars = {}; }'
+        end
+      end
+
+      def add_used_helpers
+        compiler.helpers.to_a.each { |h| add_temp "$#{h} = Opal.#{h}" }
+      end
+
+      def compile_method_stubs
+        if compiler.method_missing?
+          calls = compiler.method_calls
+          stubs = calls.to_a.map(&:to_s).join(',')
+          line "Opal.add_stubs('#{stubs}');" unless stubs.empty?
+        end
+      end
+
+      # Any special __END__ content in code
+      def compile_end_construct
+        if content = compiler.eof_content
+          line 'var $__END__ = Opal.Object.$new();'
+          line "$__END__.$read = function() { return #{content.inspect}; };"
+        end
+      end
+
+      def version_comment
+        "/* Generated by Opal #{Opal::VERSION} */"
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/variables.rb b/lib/opal/nodes/variables.rb
new file mode 100644
index 00000000..11188f73
--- /dev/null
+++ b/lib/opal/nodes/variables.rb
@@ -0,0 +1,222 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/base'
+
+module Opal
+  module Nodes
+    class LocalVariableNode < Base
+      handle :lvar
+
+      children :var_name
+
+      def using_irb?
+        compiler.irb? && scope.top?
+      end
+
+      def compile
+        return push(var_name.to_s) unless using_irb?
+
+        with_temp do |tmp|
+          push property(var_name.to_s)
+          wrap "((#{tmp} = Opal.irb_vars", ") == null ? nil : #{tmp})"
+        end
+      end
+    end
+
+    class LocalAssignNode < Base
+      handle :lvasgn
+
+      children :var_name, :value
+
+      def using_irb?
+        compiler.irb? && scope.top?
+      end
+
+      def compile
+        if using_irb?
+          push "Opal.irb_vars#{property var_name.to_s} = "
+        else
+          add_local var_name.to_s
+
+          push "#{var_name} = "
+        end
+
+        push expr(value)
+
+        wrap '(', ')' if (recv? || expr?) && value
+      end
+    end
+
+    class LocalDeclareNode < Base
+      handle :lvdeclare
+
+      children :var_name
+
+      def compile
+        add_local(var_name.to_s)
+        nil
+      end
+    end
+
+    class InstanceVariableNode < Base
+      handle :ivar
+
+      children :name
+
+      def var_name
+        name.to_s[1..-1]
+      end
+
+      def compile
+        name = property(var_name)
+        add_ivar name
+        push "#{scope.self}#{name}"
+      end
+    end
+
+    class InstanceAssignNode < Base
+      handle :ivasgn
+
+      children :name, :value
+
+      def var_name
+        name.to_s[1..-1]
+      end
+
+      def compile
+        name = property(var_name)
+        push "#{scope.self}#{name} = "
+        push expr(value)
+
+        wrap '(', ')' if (recv? || expr?) && value
+      end
+    end
+
+    class GlobalVariableNode < Base
+      handle :gvar
+
+      children :name
+
+      def var_name
+        name.to_s[1..-1]
+      end
+
+      def compile
+        helper :gvars
+
+        name = property var_name
+        add_gvar name
+        push "$gvars#{name}"
+      end
+    end
+
+    # back_ref can be:
+    # $`
+    # $'
+    # $&
+    # $+ (currently unsupported)
+    class BackRefNode < GlobalVariableNode
+      handle :back_ref
+
+      def compile
+        helper :gvars
+
+        case var_name
+        when '&'
+          handle_global_match
+        when "'"
+          handle_post_match
+        when '`'
+          handle_pre_match
+        when '+'
+          super
+        else
+          raise NotImplementedError
+        end
+      end
+
+      def handle_global_match
+        with_temp do |tmp|
+          push "((#{tmp} = $gvars['~']) === nil ? nil : #{tmp}['$[]'](0))"
+        end
+      end
+
+      def handle_pre_match
+        with_temp do |tmp|
+          push "((#{tmp} = $gvars['~']) === nil ? nil : #{tmp}.$pre_match())"
+        end
+      end
+
+      def handle_post_match
+        with_temp do |tmp|
+          push "((#{tmp} = $gvars['~']) === nil ? nil : #{tmp}.$post_match())"
+        end
+      end
+    end
+
+    class GlobalAssignNode < Base
+      handle :gvasgn
+
+      children :name, :value
+
+      def var_name
+        name.to_s[1..-1]
+      end
+
+      def compile
+        helper :gvars
+        name = property var_name
+        push "$gvars#{name} = "
+        push expr(value)
+
+        wrap '(', ')' if (recv? || expr?) && value
+      end
+    end
+
+    # $1 => s(:nth_ref, 1)
+    class NthrefNode < Base
+      handle :nth_ref
+
+      children :index
+
+      def compile
+        helper :gvars
+
+        with_temp do |tmp|
+          push "((#{tmp} = $gvars['~']) === nil ? nil : #{tmp}['$[]'](#{index}))"
+        end
+      end
+    end
+
+    class ClassVariableNode < Base
+      handle :cvar
+
+      children :name
+
+      def compile
+        helper :class_variable_get
+
+        tolerant = false
+        # We should be tolerant of expressions like: def x; @@notexist; 0; end
+        # (NB: Shouldn't we actually optimize them out?)
+        tolerant = true if stmt?
+        # We should be tolerant of expressions like: @@notexist ||= 6
+        # (those are handled with logical_operator_assignment)
+
+        push "$class_variable_get(#{class_variable_owner}, '#{name}', #{tolerant.inspect})"
+      end
+    end
+
+    class ClassVarAssignNode < Base
+      handle :cvasgn
+
+      children :name, :value
+
+      def compile
+        helper :class_variable_set
+
+        push "$class_variable_set(#{class_variable_owner}, '#{name}', ", expr(value), ')'
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/while.rb b/lib/opal/nodes/while.rb
new file mode 100644
index 00000000..23227563
--- /dev/null
+++ b/lib/opal/nodes/while.rb
@@ -0,0 +1,119 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/base'
+
+module Opal
+  module Nodes
+    class WhileNode < Base
+      handle :while
+
+      children :test, :body
+
+      def compile
+        test_code = js_truthy(test)
+
+        with_temp do |redo_var|
+          compiler.in_while do
+            while_loop[:closure] = true if wrap_in_closure?
+            while_loop[:redo_var] = redo_var
+
+            body_code = indent { stmt(body) }
+            if uses_redo?
+              compile_with_redo(test_code, body_code, redo_var)
+            else
+              compile_without_redo(test_code, body_code)
+            end
+          end
+        end
+
+        if wrap_in_closure?
+          if scope.await_encountered
+            wrap '(await (async function() {', '; return nil; })())'
+          else
+            wrap '(function() {', '; return nil; })()'
+          end
+        end
+      end
+
+      private
+
+      def compile_with_redo(test_code, body_code, redo_var)
+        push "#{redo_var} = false; "
+        compile_while(
+          [redo_var, " || ", test_code],
+          ["#{redo_var} = false;", body_code]
+        )
+      end
+
+      def compile_without_redo(test_code, body_code)
+        compile_while([test_code], [body_code])
+      end
+
+      def compile_while(test_code, body_code)
+        push while_open, *test_code, while_close
+        indent { line(*body_code) }
+        line '}'
+      end
+
+      def while_open
+        'while ('
+      end
+
+      def while_close
+        ') {'
+      end
+
+      def uses_redo?
+        while_loop[:use_redo]
+      end
+
+      def wrap_in_closure?
+        expr? || recv?
+      end
+    end
+
+    class UntilNode < WhileNode
+      handle :until
+
+      private
+
+      def while_open
+        'while (!('
+      end
+
+      def while_close
+        ')) {'
+      end
+    end
+
+    class WhilePostNode < WhileNode
+      handle :while_post
+
+      private
+
+      def compile_while(test_code, body_code)
+        push "do {"
+        indent { line(*body_code) }
+        line "} ", while_open, *test_code, while_close
+      end
+
+      def while_close
+        ');'
+      end
+    end
+
+    class UntilPostNode < WhilePostNode
+      handle :until_post
+
+      private
+
+      def while_open
+        'while(!('
+      end
+
+      def while_close
+        '));'
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/x_string.rb b/lib/opal/nodes/x_string.rb
new file mode 100644
index 00000000..24e15ce7
--- /dev/null
+++ b/lib/opal/nodes/x_string.rb
@@ -0,0 +1,141 @@
+# frozen_string_literal: true
+
+module Opal
+  module Nodes
+    class XStringNode < Base
+      handle :xstr
+
+      def compile
+        @should_add_semicolon = false
+        unpacked_children = unpack_return(children)
+        stripped_children = XStringNode.strip_empty_children(unpacked_children)
+
+        if XStringNode.single_line?(stripped_children)
+          # If it's a single line we'll try to:
+          #
+          # - strip empty lines
+          # - remove a trailing `;`
+          # - detect an embedded `return`
+          # - prepend a `return` when needed
+          # - append a `;` when needed
+          # - warn the user not to use the semicolon in single-line x-strings
+          compile_single_line(stripped_children)
+        else
+          # Here we leave to the user the responsibility to add
+          # a return where it's due.
+          unpacked_children.each { |c| compile_child(c) }
+        end
+
+        wrap '(', ')' if recv?
+        push ';' if @should_add_semicolon
+      end
+
+      # Check if there's only one child or if they're all part of
+      # the same line (e.g. because of interpolations)
+      def self.single_line?(children)
+        (children.size == 1) || children.none? do |c|
+          c.type == :str && c.loc.expression.source.end_with?("\n")
+        end
+      end
+
+      # Will remove empty :str lines coming from cosmetic newlines in x-strings
+      #
+      # @example
+      #   # this will generate two additional empty
+      #   # children before and after `foo()`
+      #   %x{
+      #     foo()
+      #   }
+      def self.strip_empty_children(children)
+        children = children.dup
+        empty_line = ->(child) { child.nil? || (child.type == :str && child.loc.expression.source.rstrip.empty?) }
+
+        children.shift while children.any? && empty_line[children.first]
+        children.pop while children.any? && empty_line[children.last]
+
+        children
+      end
+
+      private
+
+      def compile_child(child)
+        case child.type
+        when :str
+          value = child.loc.expression.source
+          scope.self if value.include? 'self'
+          push Fragment.new(value, scope, child)
+        when :begin, :gvar, :ivar, :nil
+          push expr(child)
+        else
+          raise "Unsupported xstr part: #{child.type}"
+        end
+      end
+
+      def compile_single_line(children)
+        has_embeded_return = false
+
+        first_child  = children.shift
+        single_child = children.empty?
+
+        first_child ||= s(:nil)
+
+        if first_child.type == :str
+          first_value = first_child.loc.expression.source.strip
+          has_embeded_return = first_value =~ /^return\b/
+        end
+
+        push('return ') if @returning && !has_embeded_return
+
+        last_child = children.pop || first_child
+        last_value = extract_last_value(last_child) if last_child.type == :str
+
+        unless single_child
+          # assuming there's an interpolation somewhere (type != :str)
+          @should_add_semicolon = false
+          compile_child(first_child)
+          children.each { |c| compile_child(c) }
+        end
+
+        if last_child.type == :str
+          push Fragment.new(last_value, scope, last_child)
+        else
+          compile_child(last_child)
+        end
+      end
+
+      # Will drop the trailing semicolon if all conditions are met
+      def extract_last_value(last_child)
+        last_value = last_child.loc.expression.source.rstrip
+
+        scope.self if last_value.include? 'self'
+
+        if (@returning || expr?) && last_value.end_with?(';')
+          compiler.warning(
+            'Removed semicolon ending x-string expression, interpreted as unintentional',
+            last_child.line,
+          )
+          last_value = last_value[0..-2]
+        end
+
+        @should_add_semicolon = true if @returning
+
+        last_value
+      end
+
+      # A case for manually created :js_return statement in Compiler#returns
+      # Since we need to take original source of :str we have to use raw source
+      # so we need to combine "return" with "raw_source"
+      def unpack_return(children)
+        first_child = children.first
+        @returning  = false
+
+        if first_child.type == :js_return
+          @returning = true
+          children = first_child.children
+        end
+
+        children
+      end
+    end
+  end
+end
diff --git a/lib/opal/nodes/yield.rb b/lib/opal/nodes/yield.rb
new file mode 100644
index 00000000..3eb67855
--- /dev/null
+++ b/lib/opal/nodes/yield.rb
@@ -0,0 +1,71 @@
+# frozen_string_literal: true
+
+require 'opal/nodes/base'
+
+module Opal
+  module Nodes
+    class BaseYieldNode < Base
+      def compile_call
+        yielding_scope = find_yielding_scope
+
+        yielding_scope.uses_block!
+        yielding_scope.block_name ||= '$yield'
+
+        block_name = yielding_scope.block_name
+
+        if yields_single_arg?(children)
+          push expr(children.first)
+          wrap "Opal.yield1(#{block_name}, ", ')'
+        else
+          push expr(s(:arglist, *children))
+
+          if uses_splat?(children)
+            wrap "Opal.yieldX(#{block_name}, ", ')'
+          else
+            wrap "Opal.yieldX(#{block_name}, [", '])'
+          end
+        end
+      end
+
+      def find_yielding_scope
+        working = scope
+        while working
+          if working.block_name || working.def?
+            break
+          end
+          working = working.parent
+        end
+
+        working
+      end
+
+      def yields_single_arg?(children)
+        !uses_splat?(children) && children.size == 1
+      end
+
+      def uses_splat?(children)
+        children.any? { |child| child.type == :splat }
+      end
+    end
+
+    class YieldNode < BaseYieldNode
+      handle :yield
+
+      def compile
+        compile_call
+      end
+    end
+
+    # Created by `#returns()` for when a yield statement should return
+    # it's value (its last in a block etc).
+    class ReturnableYieldNode < BaseYieldNode
+      handle :returnable_yield
+
+      def compile
+        compile_call
+
+        wrap 'return ', ';'
+      end
+    end
+  end
+end
diff --git a/lib/opal/parser.rb b/lib/opal/parser.rb
new file mode 100644
index 00000000..7f037ab3
--- /dev/null
+++ b/lib/opal/parser.rb
@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+require 'opal/ast/builder'
+require 'opal/rewriter'
+require 'opal/parser/source_buffer'
+require 'opal/parser/default_config'
+require 'opal/parser/with_ruby_lexer'
+
+require 'opal/parser/patch'
diff --git a/lib/opal/parser/default_config.rb b/lib/opal/parser/default_config.rb
new file mode 100644
index 00000000..0539ebd0
--- /dev/null
+++ b/lib/opal/parser/default_config.rb
@@ -0,0 +1,51 @@
+# frozen_string_literal: true
+
+module Opal
+  module Parser
+    module DefaultConfig
+      module ClassMethods
+        attr_accessor :diagnostics_consumer
+
+        def default_parser
+          parser = super
+          parser.diagnostics.all_errors_are_fatal = true
+          parser.diagnostics.ignore_warnings      = false
+          parser.diagnostics.consumer             = diagnostics_consumer
+          parser
+        end
+      end
+
+      def self.included(klass)
+        klass.extend(ClassMethods)
+        klass.diagnostics_consumer = ->(diagnostic) do
+          if RUBY_ENGINE != 'opal'
+            $stderr.puts(diagnostic.render)
+          end
+        end
+      end
+
+      def initialize(*)
+        super(Opal::AST::Builder.new)
+      end
+
+      def parse(source_buffer)
+        parsed = super || ::Opal::AST::Node.new(:nil)
+        wrapped = ::Opal::AST::Node.new(:top, [parsed])
+        rewriten = rewrite(wrapped)
+        rewriten
+      end
+
+      def rewrite(node)
+        Opal::Rewriter.new(node).process
+      end
+    end
+
+    class << self
+      attr_accessor :default_parser_class
+
+      def default_parser
+        default_parser_class.default_parser
+      end
+    end
+  end
+end
diff --git a/lib/opal/parser/patch.rb b/lib/opal/parser/patch.rb
new file mode 100644
index 00000000..9c7e92a8
--- /dev/null
+++ b/lib/opal/parser/patch.rb
@@ -0,0 +1,161 @@
+# frozen_string_literal: true
+
+if RUBY_ENGINE == 'opal'
+  class Parser::Lexer
+    def source_buffer=(source_buffer)
+      @source_buffer = source_buffer
+
+      if @source_buffer
+        source = @source_buffer.source
+        # Force UTF8 unpacking even if JS works with UTF-16/UCS-2
+        # See: https://mathiasbynens.be/notes/javascript-encoding
+        @source_pts = source.unpack('U*')
+      else
+        @source_pts = nil
+      end
+    end
+  end
+
+  class Parser::Lexer::Literal
+    undef :extend_string
+
+    def extend_string(string, ts, te)
+      @buffer_s ||= ts
+      @buffer_e = te
+
+      # Patch for opal-parser, original:
+      # @buffer << string
+      @buffer += string
+    end
+  end
+
+  class Parser::Source::Buffer
+    def source_lines
+      @lines ||= begin
+        lines = @source.lines.to_a
+        lines << '' if @source.end_with?("\n")
+        lines.map { |line| line.chomp("\n") }
+      end
+    end
+  end
+
+  class Parser::Builders::Default
+    def check_lvar_name(name, loc)
+      # https://javascript.info/regexp-unicode
+      if name =~ `new RegExp('^[\\p{Ll}|_][\\p{L}\\p{Nl}\\p{Nd}_]*$', 'u')`
+        # OK
+      else
+        diagnostic :error, :lvar_name, { name: name }, loc
+      end
+    end
+
+    # Taken From:
+    # https://github.com/whitequark/parser/blob/a7c638b7b205db9213a56897b41a8e5620df766e/lib/parser/builders/default.rb#L388
+    def dedent_string(node, dedent_level)
+      unless dedent_level.nil?
+        dedenter = ::Parser::Lexer::Dedenter.new(dedent_level)
+
+        case node.type
+        when :str
+          node = node.updated(nil, [dedenter.dedent(node.children.first)])
+        when :dstr, :xstr
+          children = node.children.map do |str_node|
+            if str_node.type == :str
+              str_node = str_node.updated(nil, [dedenter.dedent(str_node.children.first)])
+              next nil if str_node.children.first.empty?
+            else
+              dedenter.interrupt
+            end
+            str_node
+          end
+
+          node = node.updated(nil, children.compact)
+        end
+      end
+
+      node
+    end
+  end
+
+  class Parser::Lexer::Dedenter
+    # Taken From:
+    # https://github.com/whitequark/parser/blob/b7a08031523d05b2f76b0bab22fac00b1d3fe653/lib/parser/lexer/dedenter.rb#L36
+    def dedent(string)
+      original_encoding = string.encoding
+      # Prevent the following error when processing binary encoded source.
+      # "\xC0".split # => ArgumentError (invalid byte sequence in UTF-8)
+      lines = string.force_encoding(Encoding::BINARY).split("\\\n")
+      if lines.length == 1
+        # If the line continuation sequence was found but there is no second
+        # line, it was not really a line continuation and must be ignored.
+        lines = [string.force_encoding(original_encoding)]
+      else
+        lines.map! { |s| s.force_encoding(original_encoding) }
+      end
+
+      lines.each_with_index do |line, index|
+        next if (index == 0) && !@at_line_begin
+        left_to_remove = @dedent_level
+        remove = 0
+
+        line.each_char do |char|
+          break if left_to_remove <= 0
+          case char
+          when "\s"
+            remove += 1
+            left_to_remove -= 1
+          when "\t"
+            break if TAB_WIDTH * (remove / TAB_WIDTH + 1) > @dedent_level
+            remove += 1
+            left_to_remove -= TAB_WIDTH
+          else
+            # no more spaces or tabs
+            break
+          end
+        end
+
+        lines[index] = line[remove..-1]
+      end
+
+      string = lines.join
+
+      @at_line_begin = string.end_with?("\n")
+
+      string
+    end
+  end
+end
+
+module AST::Processor::Mixin
+  undef process
+  # This patch to #process removes a bit of dynamic abilities (removed
+  # call to node.to_ast) and it tries to optimize away the string
+  # operations and method existence check by caching them inside a
+  # processor.
+  #
+  # This is the second most inefficient call in the compilation phase
+  # so an optimization may be warranted.
+  def process(node)
+    return if node.nil?
+
+    @_on_handler_cache ||= {}
+    type = node.type
+
+    on_handler = @_on_handler_cache[type] ||= begin
+      handler = :"on_#{type}"
+      handler = :handler_missing unless respond_to?(handler)
+      handler
+    end
+
+    send(on_handler, node) || node
+  end
+end
+
+class Parser::Builders::Default
+  # string_value raises on invalid UTF-8 strings, like "\x80",
+  # otherwise it's the same as value.
+  undef string_value
+  def string_value(token)
+    value(token)
+  end
+end
diff --git a/lib/opal/parser/source_buffer.rb b/lib/opal/parser/source_buffer.rb
new file mode 100644
index 00000000..249f5ad3
--- /dev/null
+++ b/lib/opal/parser/source_buffer.rb
@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+module Opal
+  module Parser
+    class SourceBuffer < ::Parser::Source::Buffer
+      def self.recognize_encoding(string)
+        super || Encoding::UTF_8
+      end
+    end
+  end
+end
diff --git a/lib/opal/parser/with_ruby_lexer.rb b/lib/opal/parser/with_ruby_lexer.rb
new file mode 100644
index 00000000..3abc8184
--- /dev/null
+++ b/lib/opal/parser/with_ruby_lexer.rb
@@ -0,0 +1,6 @@
+# frozen_string_literal: true
+
+class Opal::Parser::WithRubyLexer < Parser::Ruby31
+  include Opal::Parser::DefaultConfig
+  Opal::Parser.default_parser_class = self
+end
diff --git a/lib/opal/path_reader.rb b/lib/opal/path_reader.rb
new file mode 100644
index 00000000..fae596fe
--- /dev/null
+++ b/lib/opal/path_reader.rb
@@ -0,0 +1,53 @@
+# frozen_string_literal: true
+
+require 'opal/regexp_anchors'
+require 'opal/hike'
+
+module Opal
+  class PathReader
+    RELATIVE_PATH_REGEXP = /#{Opal::REGEXP_START}\.?\.#{Regexp.quote File::SEPARATOR}/.freeze
+    DEFAULT_EXTENSIONS = ['.js', '.js.rb', '.rb', '.opalerb'].freeze
+
+    def initialize(paths = Opal.paths, extensions = DEFAULT_EXTENSIONS)
+      @file_finder = Hike::Trail.new
+      @file_finder.append_paths(*paths)
+      @file_finder.append_extensions(*extensions)
+    end
+
+    def read(path)
+      full_path = expand(path)
+      return nil if full_path.nil?
+      File.open(full_path, 'rb:UTF-8', &:read) if File.exist?(full_path)
+    end
+
+    def expand(path)
+      if Pathname.new(path).absolute? || path =~ RELATIVE_PATH_REGEXP
+        path
+      else
+        find_path(path)
+      end
+    end
+
+    def paths
+      file_finder.paths
+    end
+
+    def extensions
+      file_finder.extensions
+    end
+
+    def append_paths(*paths)
+      file_finder.append_paths(*paths)
+    end
+
+    private
+
+    def find_path(path)
+      pathname = Pathname(path)
+      return path if pathname.absolute? && pathname.exist?
+      file_finder.find(path)
+    end
+
+    attr_reader :file_finder
+  end
+end
diff --git a/lib/opal/paths.rb b/lib/opal/paths.rb
new file mode 100644
index 00000000..c98f6e28
--- /dev/null
+++ b/lib/opal/paths.rb
@@ -0,0 +1,88 @@
+# frozen_string_literal: true
+
+module Opal
+  # We use this file from inside Opal as well, and __dir__ is not yet supported.
+  # rubocop:disable Style/ExpandPathArguments
+  def self.gem_dir
+    File.expand_path('../..', __FILE__)
+  end
+
+  def self.core_dir
+    File.expand_path('../../../opal', __FILE__)
+  end
+
+  def self.std_dir
+    File.expand_path('../../../stdlib', __FILE__)
+  end
+  # rubocop:enable Style/ExpandPathArguments
+
+  # Add a file path to opals load path. Any gem containing ruby code that Opal
+  # has access to should add a load path through this method. Load paths added
+  # here should only be paths which contain code targeted at being compiled by
+  # Opal.
+  def self.append_path(path)
+    append_paths(path)
+  end
+
+  # Same as #append_path but can take multiple paths.
+  def self.append_paths(*paths)
+    @paths.concat(paths)
+    nil
+  end
+
+  module UseGem
+    # Adds the "require_paths" (usually `lib/`) of gem with the given name to
+    # Opal paths. By default will include the "require_paths" from all the
+    # dependent gems.
+    #
+    # @param gem_name [String] the name of the gem
+    # @param include_dependencies [Boolean] whether or not to add recursively
+    #   the gem's dependencies
+    # @raise [Opal::GemNotFound]
+    #   if gem or any of its runtime dependencies not found
+    def use_gem(gem_name, include_dependencies = true)
+      append_paths(*require_paths_for_gem(gem_name, include_dependencies))
+    end
+
+    private
+
+    def require_paths_for_gem(gem_name, include_dependencies)
+      paths = []
+
+      spec = Gem::Specification.find_by_name(gem_name)
+      raise GemNotFound, gem_name unless spec
+
+      if include_dependencies
+        spec.runtime_dependencies.each do |dependency|
+          paths += require_paths_for_gem(dependency.name, include_dependencies)
+        end
+      end
+
+      gem_dir = spec.gem_dir
+      spec.require_paths.map do |path|
+        paths << File.join(gem_dir, path)
+      end
+
+      paths
+    end
+  end
+
+  extend UseGem
+
+  def self.paths
+    @paths.freeze
+  end
+
+  # Resets Opal.paths to the default value
+  # (includes `corelib`, `stdlib`, `opal/lib`, `ast` gem and `parser` gem)
+  def self.reset_paths!
+    @paths = [core_dir, std_dir, gem_dir]
+    if RUBY_ENGINE != 'opal'
+      use_gem 'ast'
+      use_gem 'parser'
+    end
+    nil
+  end
+
+  reset_paths!
+end
diff --git a/lib/opal/regexp_anchors.rb b/lib/opal/regexp_anchors.rb
new file mode 100644
index 00000000..7312334a
--- /dev/null
+++ b/lib/opal/regexp_anchors.rb
@@ -0,0 +1,33 @@
+# frozen_string_literal: true
+
+module Opal
+  self::REGEXP_START = RUBY_ENGINE == 'opal' ? '^' : '\A'
+  self::REGEXP_END = RUBY_ENGINE == 'opal' ? '$' : '\z'
+
+  # Unicode characters in ranges
+  # \u0001 - \u002F (blank unicode characters + space + !"#$%&'()*+,-./ chars)
+  # \u003A - \u0040 (:;<=>?@ chars)
+  # \u005B - \u005E ([\]^ chars)
+  # \u0060          (` char)
+  # \u007B - \u007F ({|}~ chars})
+  # are not allowed to be used in identifier in the beggining or middle of its name
+  self::FORBIDDEN_STARTING_IDENTIFIER_CHARS = '\u0001-\u002F\u003A-\u0040\u005B-\u005E\u0060\u007B-\u007F'
+
+  # Unicode characters in ranges
+  # \u0001 - \u0020 (blank unicode characters + space)
+  # \u0022 - \u002F ("#$%&'()*+,-./ chars)
+  # \u003A - \u003E (:;<=> chars)
+  # \u0040          (@ char)
+  # \u005B - \u005E ([\]^ chars)
+  # \u0060          (` char)
+  # \u007B - \u007F ({|}~ chars})
+  # are not allowed to be used in identifier in the end of its name
+  # In fact, FORBIDDEN_STARTING_IDENTIFIER_CHARS = FORBIDDEN_ENDING_IDENTIFIER_CHARS + \u0021 ('?') + \u003F ('!')
+  self::FORBIDDEN_ENDING_IDENTIFIER_CHARS   = '\u0001-\u0020\u0022-\u002F\u003A-\u003E\u0040\u005B-\u005E\u0060\u007B-\u007F'
+  self::INLINE_IDENTIFIER_REGEXP = Regexp.new("[^#{self::FORBIDDEN_STARTING_IDENTIFIER_CHARS}]*[^#{self::FORBIDDEN_ENDING_IDENTIFIER_CHARS}]")
+
+  # For constants rules are pretty much the same, but ':' is allowed and '?!' are not.
+  # Plus it may start with a '::' which indicates that the constant comes from toplevel.
+  self::FORBIDDEN_CONST_NAME_CHARS = '\u0001-\u0020\u0021-\u002F\u003B-\u003F\u0040\u005B-\u005E\u0060\u007B-\u007F'
+  self::CONST_NAME_REGEXP = Regexp.new("#{self::REGEXP_START}(::)?[A-Z][^#{self::FORBIDDEN_CONST_NAME_CHARS}]*#{self::REGEXP_END}")
+end
diff --git a/lib/opal/repl.rb b/lib/opal/repl.rb
new file mode 100644
index 00000000..9bb9a5c3
--- /dev/null
+++ b/lib/opal/repl.rb
@@ -0,0 +1,199 @@
+# frozen_string_literal: true
+
+require 'opal'
+require 'securerandom'
+require 'stringio'
+require 'fileutils'
+require 'rbconfig'
+
+module Opal
+  class REPL
+    HISTORY_PATH = File.expand_path('~/.opal-repl-history')
+
+    attr_accessor :colorize
+
+    def initialize
+      @argv = []
+      @colorize = true
+
+      begin
+        require 'readline'
+      rescue LoadError
+        abort 'opal-repl depends on readline, which is not currently available'
+      end
+
+      begin
+        FileUtils.touch(HISTORY_PATH)
+      rescue
+        nil
+      end
+      @history = File.exist?(HISTORY_PATH)
+    end
+
+    def run(argv = [])
+      @argv = argv
+
+      savepoint = save_tty
+      load_opal
+      load_history
+      run_input_loop
+    ensure
+      dump_history
+      restore_tty(savepoint)
+    end
+
+    def load_opal
+      runner = @argv.reject { |i| i == '--repl' }
+      runner += ['-e', 'require "opal/repl_js"']
+      runner = [RbConfig.ruby, "#{__dir__}/../../exe/opal"] + runner
+
+      @pipe = IO.popen(runner, 'r+',
+        # What I try to achieve here: let the runner ignore
+        # interrupts. Those should be handled by a supervisor.
+        pgroup: true,
+        new_pgroup: true,
+      )
+    end
+
+    def run_input_loop
+      while (line = readline)
+        eval_ruby(line)
+      end
+    rescue Interrupt
+      @incomplete = nil
+      retry
+    ensure
+      finish
+    end
+
+    def finish
+      @pipe.close
+    rescue
+      nil
+    end
+
+    def eval_ruby(code)
+      builder = Opal::Builder.new
+      silencer = Silencer.new
+
+      code = "#{@incomplete}#{code}"
+      if code.start_with? 'ls '
+        eval_code = code[3..-1]
+        mode = :ls
+      elsif code == 'ls'
+        eval_code = 'self'
+        mode = :ls
+      elsif code.start_with? 'show '
+        eval_code = code[5..-1]
+        mode = :show
+      else
+        eval_code = code
+        mode = :inspect
+      end
+
+      begin
+        silencer.silence do
+          builder.build_str(eval_code, '(irb)', irb: true, const_missing: true)
+        end
+        @incomplete = nil
+      rescue Opal::SyntaxError => e
+        if LINEBREAKS.include?(e.message)
+          @incomplete = "#{code}\n"
+        else
+          @incomplete = nil
+          if silencer.warnings.empty?
+            warn e.full_message
+          else
+            # Most likely a parser error
+            warn silencer.warnings
+          end
+        end
+        return
+      end
+      builder.processed[0...-1].each { |js_code| eval_js(:silent, js_code.to_s) }
+      last_processed_file = builder.processed.last.to_s
+
+      if mode == :show
+        puts last_processed_file
+        return
+      end
+
+      eval_js(mode, last_processed_file)
+    rescue Interrupt, SystemExit => e
+      raise e
+    rescue Exception => e # rubocop:disable Lint/RescueException
+      puts e.full_message(highlight: true)
+    end
+
+    private
+
+    LINEBREAKS = [
+      'unexpected token $end',
+      'unterminated string meets end of file'
+    ].freeze
+
+    class Silencer
+      def initialize
+        @stderr = $stderr
+      end
+
+      def silence
+        @collector = StringIO.new
+        $stderr = @collector
+        yield
+      ensure
+        $stderr = @stderr
+      end
+
+      def warnings
+        @collector.string
+      end
+    end
+
+    def eval_js(mode, code)
+      obj = { mode: mode, code: code, colors: colorize }.to_json
+      @pipe.puts obj
+      while (line = @pipe.readline)
+        break if line.chomp == '<<<ready>>>'
+        puts line
+      end
+    rescue Interrupt => e
+      # A child stopped responding... let's create a new one
+      warn "* Killing #{@pipe.pid}"
+      Process.kill('-KILL', @pipe.pid)
+      load_opal
+      raise e
+    rescue EOFError, Errno::EPIPE
+      exit $?.nil? ? 0 : $?.exitstatus
+    end
+
+    def readline
+      prompt = @incomplete ? '.. ' : '>> '
+      Readline.readline prompt, true
+    end
+
+    def load_history
+      return unless @history
+      File.read(HISTORY_PATH).lines.each { |line| Readline::HISTORY.push line.strip }
+    end
+
+    def dump_history
+      return unless @history
+      length = Readline::HISTORY.size > 1000 ? 1000 : Readline::HISTORY.size
+      File.write(HISTORY_PATH, Readline::HISTORY.to_a[-length..-1].join("\n"))
+    end
+
+    # How do we support Win32?
+    def save_tty
+      %x{stty -g}.chomp
+    rescue
+      nil
+    end
+
+    def restore_tty(savepoint)
+      system('stty', savepoint)
+    rescue
+      nil
+    end
+  end
+end
diff --git a/lib/opal/requires.rb b/lib/opal/requires.rb
new file mode 100644
index 00000000..eec86a8c
--- /dev/null
+++ b/lib/opal/requires.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+require 'opal/config'
+require 'opal/compiler'
+require 'opal/builder'
+require 'opal/builder_processors'
+require 'opal/erb'
+require 'opal/paths'
+require 'opal/version'
+require 'opal/errors'
+require 'opal/source_map'
+require 'opal/deprecations'
+
+# Opal is a ruby to javascript compiler, with a runtime for running
+# in any JavaScript environment.
+module Opal
+  autoload :Server, 'opal/server' if RUBY_ENGINE != 'opal'
+  autoload :SimpleServer, 'opal/simple_server'
+end
diff --git a/lib/opal/rewriter.rb b/lib/opal/rewriter.rb
new file mode 100644
index 00000000..c0c820a9
--- /dev/null
+++ b/lib/opal/rewriter.rb
@@ -0,0 +1,88 @@
+# frozen_string_literal: true
+
+require 'opal/rewriters/opal_engine_check'
+require 'opal/rewriters/for_rewriter'
+require 'opal/rewriters/explicit_writer_return'
+require 'opal/rewriters/js_reserved_words'
+require 'opal/rewriters/block_to_iter'
+require 'opal/rewriters/dot_js_syntax'
+require 'opal/rewriters/pattern_matching'
+require 'opal/rewriters/logical_operator_assignment'
+require 'opal/rewriters/binary_operator_assignment'
+require 'opal/rewriters/hashes/key_duplicates_rewriter'
+require 'opal/rewriters/dump_args'
+require 'opal/rewriters/mlhs_args'
+require 'opal/rewriters/inline_args'
+require 'opal/rewriters/numblocks'
+require 'opal/rewriters/returnable_logic'
+require 'opal/rewriters/forward_args'
+
+module Opal
+  class Rewriter
+    @disabled = false
+
+    class << self
+      def list
+        @list ||= []
+      end
+
+      def use(rewriter)
+        list << rewriter
+      end
+
+      def delete(rewriter)
+        list.delete(rewriter)
+      end
+
+      def disable(except: nil)
+        old_disabled = @disabled
+        @disabled = except || true
+        yield
+      ensure
+        @disabled = old_disabled
+      end
+
+      def disabled?
+        @disabled == true
+      end
+
+      def rewritter_disabled?(rewriter)
+        return false if @disabled == false
+        @disabled != rewriter
+      end
+    end
+
+    use Rewriters::OpalEngineCheck
+    use Rewriters::ForRewriter
+    use Rewriters::Numblocks
+    use Rewriters::ForwardArgs
+    use Rewriters::BlockToIter
+    use Rewriters::DotJsSyntax
+    use Rewriters::PatternMatching
+    use Rewriters::JsReservedWords
+    use Rewriters::LogicalOperatorAssignment
+    use Rewriters::BinaryOperatorAssignment
+    use Rewriters::ExplicitWriterReturn
+    use Rewriters::Hashes::KeyDuplicatesRewriter
+    use Rewriters::ReturnableLogic
+    use Rewriters::DumpArgs
+    use Rewriters::MlhsArgs
+    use Rewriters::InlineArgs
+
+    def initialize(sexp)
+      @sexp = sexp
+    end
+
+    def process
+      return @sexp if self.class.disabled?
+
+      self.class.list.each do |rewriter_class|
+        next if self.class.rewritter_disabled?(rewriter_class)
+        rewriter = rewriter_class.new
+        @sexp = rewriter.process(@sexp)
+      end
+
+      @sexp
+    end
+  end
+end
diff --git a/lib/opal/rewriters/arguments.rb b/lib/opal/rewriters/arguments.rb
new file mode 100644
index 00000000..336b232e
--- /dev/null
+++ b/lib/opal/rewriters/arguments.rb
@@ -0,0 +1,61 @@
+# frozen_string_literal: true
+
+module Opal
+  module Rewriters
+    class Arguments
+      attr_reader :args, :optargs, :restarg, :postargs,
+        :kwargs, :kwoptargs, :kwrestarg, :kwnilarg,
+        :shadowargs, :blockarg
+
+      def initialize(args)
+        @args = []
+        @optargs = []
+        @restarg = nil
+        @postargs = []
+        @kwargs = []
+        @kwoptargs = []
+        @kwrestarg = nil
+        @kwnilarg = false
+        @shadowargs = []
+        @blockarg = nil
+
+        args.each do |arg|
+          case arg.type
+          when :arg, :mlhs
+            (@restarg || @optargs.any? ? @postargs : @args) << arg
+          when :optarg
+            @optargs << arg
+          when :restarg
+            @restarg = arg
+          when :kwarg
+            @kwargs << arg
+          when :kwoptarg
+            @kwoptargs << arg
+          when :kwnilarg
+            @kwnilarg = true
+          when :kwrestarg
+            @kwrestarg = arg
+          when :shadowarg
+            @shadowargs << arg
+          when :blockarg
+            @blockarg = arg
+          else
+            raise "Unsupported arg type #{arg.type}"
+          end
+        end
+      end
+
+      def has_post_args?
+        !@restarg.nil? || @postargs.any? || (has_any_kwargs? && !can_inline_kwargs?)
+      end
+
+      def has_any_kwargs?
+        @kwargs.any? || @kwoptargs.any? || !@kwrestarg.nil?
+      end
+
+      def can_inline_kwargs?
+        @optargs.empty? && @restarg.nil? && @postargs.empty?
+      end
+    end
+  end
+end
diff --git a/lib/opal/rewriters/base.rb b/lib/opal/rewriters/base.rb
new file mode 100644
index 00000000..8e6dc008
--- /dev/null
+++ b/lib/opal/rewriters/base.rb
@@ -0,0 +1,140 @@
+# frozen_string_literal: true
+
+require 'parser'
+require 'opal/ast/node'
+
+module Opal
+  module Rewriters
+    class Base < ::Parser::AST::Processor
+      class DummyLocation
+        def node=(*)
+          # stub
+        end
+
+        def expression
+          self
+        end
+
+        def begin_pos
+          0
+        end
+
+        def end_pos
+          0
+        end
+
+        def source
+          ''
+        end
+
+        def line
+          0
+        end
+
+        def column
+          0
+        end
+
+        def last_line
+          Float::INFINITY
+        end
+      end
+      DUMMY_LOCATION = DummyLocation.new
+
+      def s(type, *children)
+        loc = current_node ? current_node.loc : DUMMY_LOCATION
+        ::Opal::AST::Node.new(type, children, location: loc)
+      end
+
+      def self.s(type, *children)
+        ::Opal::AST::Node.new(type, children, location: DUMMY_LOCATION)
+      end
+
+      alias on_iter       process_regular_node
+      alias on_zsuper     process_regular_node
+      alias on_jscall     on_send
+      alias on_jsattr     process_regular_node
+      alias on_jsattrasgn process_regular_node
+      alias on_kwsplat    process_regular_node
+
+      # Prepends given +node+ to +body+ node.
+      #
+      # Supports +body+ to be one of:
+      # 1. nil                     - empty body
+      # 2. s(:begin) / s(:kwbegin) - multiline body
+      # 3. s(:anything_else)       - singleline body
+      #
+      # Returns a new body with +node+ injected as a first statement.
+      #
+      def prepend_to_body(body, node)
+        stmts = stmts_of(node) + stmts_of(body)
+        begin_with_stmts(stmts)
+      end
+
+      # Appends given +node+ to +body+ node.
+      #
+      # Supports +body+ to be one of:
+      # 1. nil                     - empty body
+      # 2. s(:begin) / s(:kwbegin) - multiline body
+      # 3. s(:anything_else)       - singleline body
+      #
+      # Returns a new body with +node+ injected as a last statement.
+      #
+      def append_to_body(body, node)
+        stmts = stmts_of(body) + stmts_of(node)
+        begin_with_stmts(stmts)
+      end
+
+      def stmts_of(node)
+        if node.nil?
+          []
+        elsif %i[begin kwbegin].include?(node.type)
+          node.children
+        else
+          [node]
+        end
+      end
+
+      def begin_with_stmts(stmts)
+        case stmts.length
+        when 0
+          nil
+        when 1
+          stmts[0]
+        else
+          s(:begin, *stmts)
+        end
+      end
+
+      # Store the current node for reporting.
+      attr_accessor :current_node
+
+      # Intercept the main call and assign current node.
+      def process(node)
+        self.current_node = node
+        super
+      ensure
+        self.current_node = nil
+      end
+
+      # This is called when a rewriting error occurs.
+      def error(msg)
+        error = ::Opal::RewritingError.new(msg)
+        error.location = current_node.loc if current_node
+        raise error
+      end
+
+      def on_top(node)
+        node = process_regular_node(node)
+        node.meta[:dynamic_cache_result] = true if @dynamic_cache_result
+        node
+      end
+
+      # Called when a given transformation is deemed to be dynamic, so
+      # that cache is conditionally disabled for a given file.
+      def dynamic!
+        @dynamic_cache_result = true
+      end
+    end
+  end
+end
diff --git a/lib/opal/rewriters/binary_operator_assignment.rb b/lib/opal/rewriters/binary_operator_assignment.rb
new file mode 100644
index 00000000..82b9da3f
--- /dev/null
+++ b/lib/opal/rewriters/binary_operator_assignment.rb
@@ -0,0 +1,141 @@
+# frozen_string_literal: true
+
+require 'opal/rewriters/base'
+
+module Opal
+  module Rewriters
+    class BinaryOperatorAssignment < Base
+      def self.reset_tmp_counter!
+        @@counter = 0
+      end
+
+      def self.new_temp
+        @@counter ||= 0
+        @@counter += 1
+        :"$binary_op_recvr_tmp_#{@@counter}"
+      end
+
+      GET_SET = ->(get_type, set_type) {
+        ->(node, lhs, operation, rhs) {
+          get_node = lhs.updated(get_type) # lhs
+          set_node = node.updated(:send, [get_node, operation, rhs]) # lhs + rhs
+
+          lhs.updated(set_type, [*lhs, set_node]) # lhs = lhs + rhs
+        }
+      }
+
+      # Takes    `lhs += rhs`
+      # Produces `lhs = lhs + rhs`
+      LocalVariableHandler = GET_SET[:lvar, :lvasgn]
+
+      # Takes    `@lhs += rhs`
+      # Produces `@lhs = @lhs + rhs`
+      InstanceVariableHandler = GET_SET[:ivar, :ivasgn]
+
+      # Takes    `LHS += rhs`
+      # Produces `LHS = LHS + rhs`
+      ConstantHandler = GET_SET[:const, :casgn]
+
+      # Takes    `$lhs += rhs`
+      # Produces `$lhs = $lhs + rhs`
+      GlobalVariableHandler = GET_SET[:gvar, :gvasgn]
+
+      # Takes    `@@lhs += rhs`
+      # Produces `@@lhs = @@lhs + rhs`
+      ClassVariableHandler = GET_SET[:cvar, :cvasgn]
+
+      # Takes    `recvr.meth += rhs`
+      # Produces `recvr.meth = recvr.meth + rhs`
+      # (lhs is a recvr.meth, op is :+)
+      class SendHandler < self
+        def self.call(node, lhs, operation, rhs)
+          recvr, reader_method, *args = *lhs
+
+          # If recvr is a complex expression it must be cached.
+          # MRI calls recvr in `recvr.meth ||= rhs` only once.
+          if recvr && recvr.type == :send
+            recvr_tmp = new_temp
+            cache_recvr = s(:lvasgn, recvr_tmp, recvr) # $tmp = recvr
+            recvr = s(:js_tmp, recvr_tmp)
+          end
+
+          writer_method = :"#{reader_method}="
+
+          call_reader = lhs.updated(:send, [recvr, reader_method, *args])          # $tmp.meth
+          call_op = node.updated(:send, [call_reader, operation, rhs])             # $tmp.meth + rhs
+          call_writer = lhs.updated(:send, [recvr, writer_method, *args, call_op]) # $tmp.meth = $tmp.meth + rhs
+
+          if cache_recvr
+            node.updated(:begin, [cache_recvr, call_writer])
+          else
+            call_writer
+          end
+        end
+      end
+
+      # Takes    `recvr.meth += rhs`
+      # Produces `recvr.nil? ? nil : recvr.meth += rhs`
+      #   NOTE: Later output of this handler gets post-processed by this rewriter again
+      #   using SendHandler to `recvr.nil? ? nil : (recvr.meth = recvr.meth + rhs)`
+      class ConditionalSendHandler < self
+        def self.call(node, lhs, operation, rhs)
+          recvr, meth, *args = *lhs
+
+          recvr_tmp = new_temp
+          cache_recvr = s(:lvasgn, recvr_tmp, recvr) # $tmp = recvr
+          recvr = s(:js_tmp, recvr_tmp)
+
+          recvr_is_nil = s(:send, recvr, :nil?)                   # recvr.nil?
+          plain_send = lhs.updated(:send, [recvr, meth, *args])   # recvr.meth
+          plain_op_asgn = node.updated(:op_asgn, [plain_send, operation, rhs]) # recvr.meth += rhs
+
+          s(:begin,
+            cache_recvr,
+            s(:if, recvr_is_nil,                          # if recvr.nil?
+              s(:nil),                                    #   nil
+                                                          # else
+              plain_op_asgn                               #   recvr.meth ||= rhs
+            ),
+          )                                               # end
+        end
+      end
+
+      HANDLERS = {
+        lvasgn: LocalVariableHandler,
+        ivasgn: InstanceVariableHandler,
+        casgn:  ConstantHandler,
+        gvasgn: GlobalVariableHandler,
+        cvasgn: ClassVariableHandler,
+        send:   SendHandler,
+        csend:  ConditionalSendHandler
+      }.freeze
+
+      # lhs += rhs
+      def on_op_asgn(node)
+        lhs, op, rhs = *node
+
+        result = HANDLERS
+                 .fetch(lhs.type) { error "cannot handle LHS type: #{lhs.type}" }
+                 .call(node, lhs, op, rhs)
+
+        process(result)
+      end
+
+      ASSIGNMENT_STRING_NODE = s(:str, 'assignment')
+
+      # Rewrites any or_asgn and and_asgn node like
+      #   `defined?(a ||= 1)`
+      # and
+      #   `defined?(a &&= 1)`
+      # to a static "assignment" string node
+      def on_defined?(node)
+        inner, _ = *node
+        if inner.type == :op_asgn
+          ASSIGNMENT_STRING_NODE
+        else
+          super(node)
+        end
+      end
+    end
+  end
+end
diff --git a/lib/opal/rewriters/block_to_iter.rb b/lib/opal/rewriters/block_to_iter.rb
new file mode 100644
index 00000000..364188b1
--- /dev/null
+++ b/lib/opal/rewriters/block_to_iter.rb
@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+require 'opal/rewriters/base'
+
+module Opal
+  module Rewriters
+    class BlockToIter < Base
+      def on_block(node)
+        recvr, args, body = *node
+        iter_node = s(:iter, args, body)
+        process recvr.updated(
+          nil,
+          (recvr.children + [iter_node]),
+        )
+      end
+    end
+  end
+end
diff --git a/lib/opal/rewriters/break_finder.rb b/lib/opal/rewriters/break_finder.rb
new file mode 100644
index 00000000..778d4deb
--- /dev/null
+++ b/lib/opal/rewriters/break_finder.rb
@@ -0,0 +1,36 @@
+# frozen_string_literal: true
+
+require 'opal/rewriter'
+
+module Opal
+  module Rewriters
+    class BreakFinder < Opal::Rewriters::Base
+      def initialize
+        @found_break = false
+      end
+
+      def found_break?
+        @found_break
+      end
+
+      def on_break(node)
+        @found_break = true
+        node
+      end
+
+      def stop_lookup(node)
+        # noop
+      end
+
+      # regular loops
+      alias on_for        stop_lookup
+      alias on_while      stop_lookup
+      alias on_while_post stop_lookup
+      alias on_until      stop_lookup
+      alias on_until_post stop_lookup
+
+      # nested block
+      alias on_block      stop_lookup
+    end
+  end
+end
diff --git a/lib/opal/rewriters/dot_js_syntax.rb b/lib/opal/rewriters/dot_js_syntax.rb
new file mode 100644
index 00000000..32437b24
--- /dev/null
+++ b/lib/opal/rewriters/dot_js_syntax.rb
@@ -0,0 +1,61 @@
+# frozen_string_literal: true
+
+require 'opal/rewriters/base'
+
+module Opal
+  module Rewriters
+    class DotJsSyntax < Base
+      def on_send(node)
+        recv, meth, *args = *node
+        if recv && recv.type == :send
+          recv_of_recv, meth_of_recv, _ = *recv
+          if meth_of_recv == :JS
+            case meth
+            when :[]
+              if args.size != 1
+                error '.JS[:property] syntax supports only one argument'
+              end
+              property = args.first
+
+              node = to_js_attr_call(recv_of_recv, property)
+            when :[]=
+              if args.size != 2
+                error '.JS[:property]= syntax supports only two arguments'
+              end
+
+              property, value = *args
+              node = to_js_attr_assign_call(recv_of_recv, property, value)
+            else
+              node = to_native_js_call(recv_of_recv, meth, args)
+            end
+            super(node)
+          else
+            super
+          end
+        else
+          super
+        end
+      end
+
+      # @param recv [AST::Node] receiver of .JS. method
+      # @param meth [Symbol] name of the JS method
+      # @param args [Array<AST::Node>] list of the arguments passed to JS method
+      def to_native_js_call(recv, meth, args)
+        s(:jscall, recv, meth, *args)
+      end
+
+      # @param recv [AST::Node] receiver of .JS[] method
+      # @param property [AST::Node] argument passed to .JS[] method
+      def to_js_attr_call(recv, property)
+        s(:jsattr, recv, property)
+      end
+
+      # @param recv [AST::Node] receiver of .JS[]= method
+      # @param property [AST::Node] property passed to brackets
+      # @param value [AST::Node] value of assignment
+      def to_js_attr_assign_call(recv, property, value)
+        s(:jsattrasgn, recv, property, value)
+      end
+    end
+  end
+end
diff --git a/lib/opal/rewriters/dump_args.rb b/lib/opal/rewriters/dump_args.rb
new file mode 100644
index 00000000..2f96a931
--- /dev/null
+++ b/lib/opal/rewriters/dump_args.rb
@@ -0,0 +1,28 @@
+# frozen_string_literal: true
+
+require 'opal/rewriters/base'
+
+module Opal
+  module Rewriters
+    class DumpArgs < Base
+      def on_def(node)
+        node = super(node)
+        _mid, args, _body = *node
+        node.updated(nil, nil, meta: { original_args: args })
+      end
+
+      def on_defs(node)
+        node = super(node)
+        _recv, _mid, args, _body = *node
+
+        node.updated(nil, nil, meta: { original_args: args })
+      end
+
+      def on_iter(node)
+        node = super(node)
+        args, _body = *node
+        node.updated(nil, nil, meta: { original_args: args })
+      end
+    end
+  end
+end
diff --git a/lib/opal/rewriters/explicit_writer_return.rb b/lib/opal/rewriters/explicit_writer_return.rb
new file mode 100644
index 00000000..f0625564
--- /dev/null
+++ b/lib/opal/rewriters/explicit_writer_return.rb
@@ -0,0 +1,59 @@
+# frozen_string_literal: true
+
+require 'opal/rewriters/base'
+
+module Opal
+  module Rewriters
+    class ExplicitWriterReturn < Base
+      def initialize
+        @in_masgn = false
+      end
+
+      TMP_NAME = '$writer'
+      GET_ARGS_NODE = s(:lvar, TMP_NAME)
+      RETURN_ARGS_NODE = s(:jsattr,
+        GET_ARGS_NODE,
+        s(:send, s(:jsattr, GET_ARGS_NODE, s(:str, 'length')), :-, s(:int, 1)),
+      )
+
+      def on_send(node)
+        return super if @in_masgn
+
+        recv, method_name, *args = *node
+
+        if method_name.to_s =~ /#{REGEXP_START}\w+=#{REGEXP_END}/ || method_name.to_s == '[]='
+          set_args_node = s(:lvasgn, TMP_NAME, s(:array, *process_all(args)))
+
+          s(:begin,
+            set_args_node,
+            node.updated(nil, [recv, method_name, s(:splat, GET_ARGS_NODE)]),
+            RETURN_ARGS_NODE,
+          )
+        else
+          super
+        end
+      end
+
+      # Multiple assignment is handled by Opal::Nodes::MassAssignNode
+      #
+      # For example, "self.a, self.b = 1, 2" parses to:
+      # s(:masgn,
+      #   s(:mlhs,
+      #     s(:send,
+      #       s(:self), :a=),
+      #     s(:send,
+      #       s(:self), :b=)),
+      #   s(:array,
+      #     s(:int, 1),
+      #     s(:int, 2)))
+      #
+      # And this AST rewriter skips this node.
+      def on_masgn(node)
+        @in_masgn = true
+        result = super
+        @in_masgn = false
+        result
+      end
+    end
+  end
+end
diff --git a/lib/opal/rewriters/for_rewriter.rb b/lib/opal/rewriters/for_rewriter.rb
new file mode 100644
index 00000000..368dcab3
--- /dev/null
+++ b/lib/opal/rewriters/for_rewriter.rb
@@ -0,0 +1,93 @@
+# frozen_string_literal: true
+
+require 'opal/rewriters/base'
+
+module Opal
+  module Rewriters
+    class ForRewriter < Base
+      def self.reset_tmp_counter!
+        @counter = 0
+      end
+
+      def self.next_tmp
+        @counter ||= 0
+        @counter += 1
+        :"$for_tmp#{@counter}"
+      end
+
+      # Handles
+      #   for i in 0..3; j = i + 1; end
+      #
+      # The problem here is that in Ruby for loop makes its
+      # loop variable + all local variables available outside.
+      # I.e. after this loop variable `i` is 3 and `j` is 4
+      #
+      # This class rewrites it to the following code:
+      #   j = nil
+      #   i = nil
+      #   (0..3).each { |__jstmp| i = __jstmp; j = i + 1 }
+      #
+      # Complex stuff with multiple loop variables:
+      #   for i, j in [[1, 2], [3, 4]]; end
+      # Becomes multiple left-hand assignment:
+      #   i = nil
+      #   j = nil
+      #   [[1, 2], [3, 4]].each { |__jstmp| i, j = __jstmp }
+      #
+      def on_for(node)
+        loop_variable, iterating_value, loop_body = *node
+
+        iterating_lvars        = LocalVariableAssigns.find(loop_variable) # [:i]
+        lvars_declared_in_body = LocalVariableAssigns.find(loop_body)     # [:j]
+
+        # i = nil; j = nil
+        outer_assigns = (iterating_lvars + lvars_declared_in_body).map do |lvar_name|
+          s(:lvdeclare, lvar_name)
+        end
+
+        # :__jstmp
+        tmp_loop_variable = self.class.next_tmp
+        get_tmp_loop_variable = s(:js_tmp, tmp_loop_variable)
+
+        loop_variable_assignment = case loop_variable.type
+                                   when :mlhs # multiple left-hand statement like in "for i,j in [[1, 2], [3, 4]]"
+                                     # i, j = __jstmp
+                                     loop_variable.updated(:masgn, [loop_variable, get_tmp_loop_variable])
+                                   else # single argument like "for i in (0..3)"
+                                     # i = __jstmp
+                                     loop_variable << get_tmp_loop_variable
+                                   end
+
+        loop_body = prepend_to_body(loop_body, loop_variable_assignment)
+
+        node = node.updated(:send, [iterating_value, :each,                                    # (0..3).each {
+                                    node.updated(:iter, [s(:args, s(:arg, tmp_loop_variable)), #                |__jstmp|
+                                                         process(loop_body)]                   #                          i = __jstmp; j = i + 1 }
+                                    )]
+        )
+
+        node.updated(:begin, [*outer_assigns, node])
+      end
+
+      class LocalVariableAssigns < Base
+        attr_reader :result
+
+        def self.find(node)
+          processor = new
+          processor.process(node)
+          processor.result.to_a
+        end
+
+        def initialize
+          @result = Set.new
+        end
+
+        def on_lvasgn(node)
+          name, _ = *node
+          result << name
+          super
+        end
+      end
+    end
+  end
+end
diff --git a/lib/opal/rewriters/forward_args.rb b/lib/opal/rewriters/forward_args.rb
new file mode 100644
index 00000000..187acb75
--- /dev/null
+++ b/lib/opal/rewriters/forward_args.rb
@@ -0,0 +1,54 @@
+# frozen_string_literal: true
+
+require 'opal/rewriters/base'
+
+module Opal
+  module Rewriters
+    class ForwardArgs < Base
+      def on_forward_args(_node)
+        process(
+          s(:args, s(:forward_arg, :"$"))
+        )
+      end
+
+      def on_args(node)
+        if node.children.last && node.children.last.type == :forward_arg
+          prev_children = node.children[0..-2]
+
+          node.updated(nil,
+            [
+              *prev_children,
+              s(:restarg, '$fwd_rest'),
+              s(:blockarg, '$fwd_block')
+            ]
+          )
+        else
+          super
+        end
+      end
+
+      def on_send(node)
+        if node.children.last &&
+           node.children.last.class != Symbol &&
+           node.children.last.type == :forwarded_args
+
+          prev_children = node.children[0..-2]
+
+          node.updated(nil,
+            [
+              *prev_children,
+              s(:splat,
+                s(:lvar, '$fwd_rest')
+              ),
+              s(:block_pass,
+                s(:lvar, '$fwd_block')
+              )
+            ]
+          )
+        else
+          super
+        end
+      end
+    end
+  end
+end
diff --git a/lib/opal/rewriters/hashes/key_duplicates_rewriter.rb b/lib/opal/rewriters/hashes/key_duplicates_rewriter.rb
new file mode 100644
index 00000000..f016d913
--- /dev/null
+++ b/lib/opal/rewriters/hashes/key_duplicates_rewriter.rb
@@ -0,0 +1,59 @@
+# frozen_string_literal: true
+
+require 'opal/rewriters/base'
+require 'set'
+
+module Opal
+  module Rewriters
+    module Hashes
+      class KeyDuplicatesRewriter < ::Opal::Rewriters::Base
+        def initialize
+          @keys = UniqKeysSet.new
+        end
+
+        def on_hash(node)
+          previous_keys, @keys = @keys, UniqKeysSet.new
+          super(node)
+        ensure
+          @keys = previous_keys
+        end
+
+        def on_pair(node)
+          key, _value = *node
+
+          if %i[str sym].include?(key.type)
+            @keys << key
+          end
+
+          super(node)
+        end
+
+        def on_kwsplat(node)
+          hash, _ = *node
+
+          if hash.type == :hash
+            hash = process_regular_node(hash)
+          end
+
+          node.updated(nil, [hash])
+        end
+
+        class UniqKeysSet
+          def initialize
+            @set = Set.new
+          end
+
+          def <<(element)
+            if @set.include?(element)
+              key, _ = *element
+              key = element.type == :str ? key.inspect : ":#{key}"
+              Kernel.warn "warning: key #{key} is duplicated and overwritten"
+            else
+              @set << element
+            end
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/lib/opal/rewriters/inline_args.rb b/lib/opal/rewriters/inline_args.rb
new file mode 100644
index 00000000..3e3bc91d
--- /dev/null
+++ b/lib/opal/rewriters/inline_args.rb
@@ -0,0 +1,220 @@
+# frozen_string_literal: true
+
+require 'opal/rewriters/base'
+require 'opal/rewriters/arguments'
+
+module Opal
+  module Rewriters
+    # Converts
+    #
+    #   def m( a, b = 1, *c, d, e:, f: 1, **g, &blk )
+    #   end
+    #
+    # To something like
+    #
+    #   def m( a, <fake b>, <fake c>, <fake d>, <fake kwargs>)
+    #     blk = <extract block>
+    #     $post_args = arguments[1..-1]
+    #     $kwargs = $post_args.pop
+    #     a = <enough args> ? $post_args.shift : 1
+    #     c = <enough args> ? $post_args[0..-1] : []
+    #     d = $post_args.last
+    #     e = $kwargs.delete(:e)
+    #     f = $kwargs.delete(:f) || 1
+    #     g = $kwargs.except(:e, :f)
+    #   end
+    #
+    class InlineArgs < Base
+      def on_def(node)
+        node = super(node)
+        mid, args, body = *node
+
+        body ||= s(:nil) # prevent returning initialization statement
+
+        initializer = Initializer.new(args, type: :def)
+        inline_args = args.updated(nil, initializer.inline)
+        body = prepend_to_body(body, initializer.initialization)
+
+        node.updated(nil, [mid, inline_args, body])
+      end
+
+      def on_defs(node)
+        node = super(node)
+        recv, mid, args, body = *node
+
+        body ||= s(:nil) # prevent returning initialization statement
+
+        initializer = Initializer.new(args, type: :defs)
+        inline_args = args.updated(nil, initializer.inline)
+        body = prepend_to_body(body, initializer.initialization)
+
+        node.updated(nil, [recv, mid, inline_args, body])
+      end
+
+      def on_iter(node)
+        node = super(node)
+        args, body = *node
+
+        body ||= s(:nil) # prevent returning initialization statement
+
+        initializer = Initializer.new(args, type: :iter)
+        inline_args = args.updated(nil, initializer.inline)
+        body = prepend_to_body(body, initializer.initialization)
+
+        node.updated(nil, [inline_args, body])
+      end
+
+      class Initializer < ::Opal::Rewriters::Base
+        attr_reader :inline, :initialization
+
+        STEPS = %i[
+          extract_blockarg
+          initialize_shadowargs
+          extract_args
+
+          prepare_post_args
+          prepare_kwargs
+
+          extract_optargs
+          extract_restarg
+          extract_post_args
+
+          extract_kwargs
+          extract_kwoptargs
+          extract_kwrestarg
+        ].freeze
+
+        def initialize(args, type:)
+          @args = Arguments.new(args.children)
+
+          @inline = []
+          @initialization = []
+
+          @type = type
+          @underscore_found = false
+
+          STEPS.each do |step|
+            send(step)
+          end
+
+          if @initialization.any?
+            @initialization = s(:begin, *@initialization)
+          else
+            @initialization = nil
+          end
+        end
+
+        def extract_blockarg
+          if (arg = @args.blockarg)
+            @initialization << arg.updated(:extract_blockarg)
+          end
+        end
+
+        def initialize_shadowargs
+          @args.shadowargs.each do |arg|
+            @initialization << arg.updated(:initialize_shadowarg)
+          end
+        end
+
+        def extract_args
+          @args.args.each do |arg|
+            if @type == :iter
+              # block args are not required,
+              # so we neeed to tell compiler that required args
+              # must be initialized with nil-s
+              @initialization << arg.updated(:initialize_iter_arg)
+
+              if arg.children[0] == :_
+                if @underscore_found
+                  # for proc { |_, _| _ }.call(1, 2) result must be 1
+                  # here we convert all underscore args starting from the 2nd
+                  # to a "fake" arg
+                  arg = s(:fake_arg)
+                end
+
+                @underscore_found = true
+              end
+            else
+              # required inline def argument like 'def m(req)'
+              # no initialization is required
+            end
+            @inline << arg
+          end
+        end
+
+        def prepare_post_args
+          if @args.has_post_args?
+            @initialization << s(:prepare_post_args, @args.args.length)
+          end
+        end
+
+        def prepare_kwargs
+          return unless @args.has_any_kwargs?
+
+          if @args.can_inline_kwargs?
+            @inline << s(:arg, :'$kwargs')
+          else
+            @initialization << s(:extract_kwargs)
+            @inline << s(:fake_arg)
+          end
+
+          @initialization << s(:ensure_kwargs_are_kwargs)
+        end
+
+        def extract_kwargs
+          @args.kwargs.each do |arg|
+            @initialization << arg.updated(:extract_kwarg)
+          end
+        end
+
+        def extract_kwoptargs
+          @args.kwoptargs.each do |arg|
+            @initialization << arg.updated(:extract_kwoptarg)
+          end
+        end
+
+        def extract_kwrestarg
+          if (arg = @args.kwrestarg)
+            @initialization << arg.updated(:extract_kwrestarg)
+          end
+        end
+
+        def extract_post_args
+          # post arguments must be extracted with an offset
+          @args.postargs.each do |arg|
+            @initialization << arg.updated(:extract_post_arg)
+            @inline << s(:fake_arg)
+          end
+        end
+
+        def extract_optargs
+          has_post_args = @args.has_post_args?
+          @args.optargs.each do |arg|
+            if has_post_args
+              # optional post argument like 'def m(opt = 1, a)'
+              arg_name, default_value = *arg
+              @initialization << arg.updated(:extract_post_optarg, [arg_name, default_value, args_to_keep])
+              @inline << s(:fake_arg)
+            else
+              # optional inline argument like 'def m(a, opt = 1)'
+              @inline << arg.updated(:arg)
+              @initialization << arg.updated(:extract_optarg)
+            end
+          end
+        end
+
+        def extract_restarg
+          if (arg = @args.restarg)
+            arg_name = arg.children[0]
+            @initialization << arg.updated(:extract_restarg, [arg_name, args_to_keep])
+            @inline << s(:fake_arg)
+          end
+        end
+
+        def args_to_keep
+          @args.postargs.length
+        end
+      end
+    end
+  end
+end
diff --git a/lib/opal/rewriters/js_reserved_words.rb b/lib/opal/rewriters/js_reserved_words.rb
new file mode 100644
index 00000000..8fef97c7
--- /dev/null
+++ b/lib/opal/rewriters/js_reserved_words.rb
@@ -0,0 +1,114 @@
+# frozen_string_literal: true
+
+require 'opal/rewriters/base'
+require 'opal/regexp_anchors'
+
+module Opal
+  module Rewriters
+    class JsReservedWords < Base
+      # Reserved javascript keywords - we cannot create variables with the
+      # same name (ref: http://stackoverflow.com/a/9337272/601782)
+      ES51_RESERVED_WORD = /#{REGEXP_START}(?:do|if|in|for|let|new|try|var|case|else|enum|eval|false|null|this|true|void|with|break|catch|class|const|super|throw|while|yield|delete|export|import|public|return|static|switch|typeof|default|extends|finally|package|private|continue|debugger|function|arguments|interface|protected|implements|instanceof)#{REGEXP_END}/.freeze
+
+      # ES3 reserved words that aren’t ES5.1 reserved words
+      ES3_RESERVED_WORD_EXCLUSIVE = /#{REGEXP_START}(?:int|byte|char|goto|long|final|float|short|double|native|throws|boolean|abstract|volatile|transient|synchronized)#{REGEXP_END}/.freeze
+
+      # Prototype special properties.
+      PROTO_SPECIAL_PROPS = /#{REGEXP_START}(?:constructor|displayName|__proto__|__parent__|__noSuchMethod__|__count__)#{REGEXP_END}/.freeze
+
+      # Prototype special methods.
+      PROTO_SPECIAL_METHODS = /#{REGEXP_START}(?:hasOwnProperty|valueOf)#{REGEXP_END}/.freeze
+
+      # Immutable properties of the global object
+      IMMUTABLE_PROPS = /#{REGEXP_START}(?:NaN|Infinity|undefined)#{REGEXP_END}/.freeze
+
+      # Doesn't take in account utf8
+      BASIC_IDENTIFIER_RULES = /#{REGEXP_START}[$_a-z][$_a-z\d]*#{REGEXP_END}/i.freeze
+
+      # Defining a local function like Array may break everything
+      RESERVED_FUNCTION_NAMES = /#{REGEXP_START}(?:Array)#{REGEXP_END}/.freeze
+
+      def self.valid_name?(name)
+        BASIC_IDENTIFIER_RULES =~ name && !(
+          ES51_RESERVED_WORD =~ name ||
+          ES3_RESERVED_WORD_EXCLUSIVE =~ name ||
+          IMMUTABLE_PROPS =~ name
+        )
+      end
+
+      def self.valid_ivar_name?(name)
+        !(PROTO_SPECIAL_PROPS =~ name || PROTO_SPECIAL_METHODS =~ name)
+      end
+
+      def fix_var_name(name)
+        self.class.valid_name?(name) ? name : "#{name}$".to_sym
+      end
+
+      def fix_ivar_name(name)
+        self.class.valid_ivar_name?(name.to_s[1..-1]) ? name : "#{name}$".to_sym
+      end
+
+      def on_lvar(node)
+        name, _ = *node
+        node = node.updated(nil, [fix_var_name(name)])
+        super(node)
+      end
+
+      def on_lvasgn(node)
+        name, value = *node
+
+        node =
+          if value
+            node.updated(nil, [fix_var_name(name), value])
+          else
+            node.updated(nil, [fix_var_name(name)])
+          end
+
+        super(node)
+      end
+
+      def on_ivar(node)
+        name, _ = *node
+        node = node.updated(nil, [fix_ivar_name(name)])
+        super(node)
+      end
+
+      def on_ivasgn(node)
+        name, value = *node
+
+        node =
+          if value
+            node.updated(nil, [fix_ivar_name(name), value])
+          else
+            node.updated(nil, [fix_ivar_name(name)])
+          end
+
+        super(node)
+      end
+
+      # Restarg and kwrestarg are special cases
+      # because they may have no name
+      # def m(*, **); end
+      def on_restarg(node)
+        name, _ = *node
+
+        if name
+          node = node.updated(nil, [fix_var_name(name)], meta: { arg_name: name })
+        end
+
+        node
+      end
+
+      alias on_kwrestarg on_restarg
+
+      def on_argument(node)
+        node = super(node)
+        name, value = *node
+        fixed_name = fix_var_name(name)
+        new_children = value ? [fixed_name, value] : [fixed_name]
+
+        node.updated(nil, new_children, meta: { arg_name: name })
+      end
+    end
+  end
+end
diff --git a/lib/opal/rewriters/logical_operator_assignment.rb b/lib/opal/rewriters/logical_operator_assignment.rb
new file mode 100644
index 00000000..5aad68c0
--- /dev/null
+++ b/lib/opal/rewriters/logical_operator_assignment.rb
@@ -0,0 +1,167 @@
+# frozen_string_literal: true
+
+require 'opal/rewriters/base'
+
+module Opal
+  module Rewriters
+    class LogicalOperatorAssignment < Base
+      def self.reset_tmp_counter!
+        @@counter = 0
+      end
+
+      def self.new_temp
+        @@counter ||= 0
+        @@counter += 1
+        :"$logical_op_recvr_tmp_#{@@counter}"
+      end
+
+      GET_SET = ->(get_type, set_type) {
+        ->(lhs, rhs, root_type) {
+          get_node = lhs.updated(get_type)              # lhs
+          condition_node = s(root_type, get_node, rhs)  # lhs || rhs
+
+          if %i[const cvar].include?(get_type) && root_type == :or
+            # defined?(lhs)
+            defined_node = s(:defined?, get_node)
+            # LHS = defined?(LHS) ? (LHS || rhs) : rhs
+            condition_node = s(:if, defined_node, s(:begin, condition_node), rhs)
+          end
+
+          lhs.updated(set_type, [*lhs, condition_node]) # lhs = lhs || rhs
+        }
+      }
+
+      # Takes    `lhs ||= rhs`
+      # Produces `lhs = lhs || rhs`
+      LocalVariableHandler = GET_SET[:lvar, :lvasgn]
+
+      # Takes    `@lhs ||= rhs`
+      # Produces `@lhs = @lhs || rhs`
+      InstanceVariableHandler = GET_SET[:ivar, :ivasgn]
+
+      # Takes    `LHS ||= rhs`
+      # Produces `LHS = defined?(LHS) ? (LHS || rhs) : rhs`
+      #
+      # Takes    `LHS &&= rhs`
+      # Produces `LHS = LHS && rhs`
+      ConstantHandler = GET_SET[:const, :casgn]
+
+      # Takes    `$lhs ||= rhs`
+      # Produces `$lhs = $lhs || rhs`
+      GlobalVariableHandler = GET_SET[:gvar, :gvasgn]
+
+      # Takes    `@@lhs ||= rhs`
+      # Produces `@@lhs = defined?(@@lhs) ? (@@lhs || rhs) : rhs`
+      #
+      # Takes    `@@lhs &&= rhs`
+      # Produces `@@lhs = @@lhs && rhs`
+      ClassVariableHandler = GET_SET[:cvar, :cvasgn]
+
+      # Takes    `recvr.meth ||= rhs`
+      # Produces `recvr.meth || recvr.meth = rhs`
+      # (lhs is a recvr.meth)
+      class SendHandler < self
+        def self.call(lhs, rhs, root_type)
+          recvr, reader_method, *args = *lhs
+
+          # If recvr is a complex expression it must be cached.
+          # MRI calls recvr in `recvr.meth ||= rhs` only once.
+          if recvr && recvr.type == :send
+            recvr_tmp = new_temp
+            cache_recvr = s(:lvasgn, recvr_tmp, recvr)                         # $tmp = recvr
+            recvr = s(:js_tmp, recvr_tmp)
+          end
+
+          writer_method = :"#{reader_method}="
+
+          call_reader = lhs.updated(:send, [recvr, reader_method, *args])      # $tmp.meth
+          call_writer = lhs.updated(:send, [recvr, writer_method, *args, rhs]) # $tmp.meth = rhs
+          get_or_set = s(root_type, call_reader, call_writer)
+
+          if cache_recvr
+            s(:begin, cache_recvr, get_or_set)
+          else
+            get_or_set
+          end
+        end
+      end
+
+      # Takes    `recvr&.meth ||= rhs`
+      # Produces `recvr.nil? ? nil : recvr.meth ||= rhs`
+      #   NOTE: Later output of this handler gets post-processed by this rewriter again
+      #   using SendHandler to `recvr.nil? ? nil : (recvr.meth || recvr.meth = rhs)`
+      class ConditionalSendHandler < self
+        def self.call(lhs, rhs, root_type)
+          root_type = :"#{root_type}_asgn"
+
+          recvr, meth, *args = *lhs
+
+          recvr_tmp = new_temp
+          cache_recvr = s(:lvasgn, recvr_tmp, recvr) # $tmp = recvr
+          recvr = s(:js_tmp, recvr_tmp)
+
+          recvr_is_nil = s(:send, recvr, :nil?)                 # recvr.nil?
+          plain_send = lhs.updated(:send, [recvr, meth, *args]) # recvr.meth
+          plain_or_asgn = s(root_type, plain_send, rhs)         # recvr.meth ||= rhs
+
+          s(:begin,
+            cache_recvr,
+            s(:if, recvr_is_nil,                          # if recvr.nil?
+              s(:nil),                                    #   nil
+                                                          # else
+              plain_or_asgn                               #   recvr.meth ||= rhs
+            ),
+          )                                               # end
+        end
+      end
+
+      HANDLERS = {
+        lvasgn: LocalVariableHandler,
+        ivasgn: InstanceVariableHandler,
+        casgn:  ConstantHandler,
+        gvasgn: GlobalVariableHandler,
+        cvasgn: ClassVariableHandler,
+        send:   SendHandler,
+        csend:  ConditionalSendHandler
+      }.freeze
+
+      # lhs ||= rhs
+      def on_or_asgn(node)
+        lhs, rhs = *node
+
+        result = HANDLERS
+                 .fetch(lhs.type) { error "cannot handle LHS type: #{lhs.type}" }
+                 .call(lhs, rhs, :or)
+
+        process(result)
+      end
+
+      # lhs &&= rhs
+      def on_and_asgn(node)
+        lhs, rhs = *node
+
+        result = HANDLERS
+                 .fetch(lhs.type) { error "cannot handle LHS type: #{lhs.type}" }
+                 .call(lhs, rhs, :and)
+
+        process(result)
+      end
+
+      ASSIGNMENT_STRING_NODE = s(:str, 'assignment')
+
+      # Rewrites any or_asgn and and_asgn node like
+      #   `defined?(a ||= 1)`
+      # and
+      #   `defined?(a &&= 1)`
+      # to a static "assignment" string node
+      def on_defined?(node)
+        inner, _ = *node
+        if %i[or_asgn and_asgn].include?(inner.type)
+          ASSIGNMENT_STRING_NODE
+        else
+          super(node)
+        end
+      end
+    end
+  end
+end
diff --git a/lib/opal/rewriters/mlhs_args.rb b/lib/opal/rewriters/mlhs_args.rb
new file mode 100644
index 00000000..9e073786
--- /dev/null
+++ b/lib/opal/rewriters/mlhs_args.rb
@@ -0,0 +1,128 @@
+# frozen_string_literal: true
+
+require 'opal/rewriters/base'
+
+module Opal
+  module Rewriters
+    # Rewrites
+    #
+    # def m( (a, b), (c, d) )
+    #   body
+    # end
+    #
+    # To
+    #
+    # def m($mlhs_tmp1, $mlhs_tmp2)
+    #   (a, b) = $mlhs_tmp1
+    #   (c, d) = $mlhs_tmp2
+    #   body
+    # end
+    #
+    class MlhsArgs < Base
+      def on_def(node)
+        node = super(node)
+        mid, args, body = *node
+
+        arguments = Arguments.new(args)
+
+        args = args.updated(nil, arguments.rewritten)
+        if arguments.initialization
+          body ||= s(:nil) # prevent returning mlhs assignment
+          body = prepend_to_body(body, arguments.initialization)
+        end
+
+        node.updated(nil, [mid, args, body])
+      end
+
+      def on_defs(node)
+        node = super(node)
+        recv, mid, args, body = *node
+
+        arguments = Arguments.new(args)
+
+        args = args.updated(nil, arguments.rewritten)
+        if arguments.initialization
+          body ||= s(:nil) # prevent returning mlhs assignment
+          body = prepend_to_body(body, arguments.initialization)
+        end
+
+        node.updated(nil, [recv, mid, args, body])
+      end
+
+      def on_iter(node)
+        node = super(node)
+        args, body = *node
+
+        arguments = Arguments.new(args)
+
+        args = args.updated(nil, arguments.rewritten)
+        if arguments.initialization
+          body ||= s(:nil) # prevent returning mlhs assignment
+          body = prepend_to_body(body, arguments.initialization)
+        end
+
+        node.updated(nil, [args, body])
+      end
+
+      class Arguments < Base
+        attr_reader :rewritten, :initialization
+
+        def initialize(args)
+          @args = args
+          @rewritten = []
+          @initialization = []
+          @rewriter = MlhsRewriter.new
+
+          split!
+        end
+
+        def reset_tmp_counter!
+          @counter = 0
+        end
+
+        def new_mlhs_tmp
+          @counter ||= 0
+          @counter += 1
+          :"$mlhs_tmp#{@counter}"
+        end
+
+        def split!
+          @args.children.each do |arg|
+            if arg.type == :mlhs
+              var_name = new_mlhs_tmp
+              rhs = s(:lvar, var_name)
+              mlhs = @rewriter.process(arg)
+              @initialization << s(:masgn, mlhs, rhs)
+              @rewritten << s(:arg, var_name).updated(nil, nil, meta: { arg_name: var_name })
+            else
+              @rewritten << arg
+            end
+          end
+
+          if @initialization.length == 1
+            @initialization = @initialization[0]
+          elsif @initialization.empty?
+            @initialization = nil
+          else
+            @initialization = s(:begin, *@initialization)
+          end
+        end
+      end
+
+      class MlhsRewriter < Base
+        def on_arg(node)
+          node.updated(:lvasgn)
+        end
+
+        def on_restarg(node)
+          name = node.children[0]
+          if name
+            s(:splat, node.updated(:lvasgn))
+          else
+            s(:splat)
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/lib/opal/rewriters/numblocks.rb b/lib/opal/rewriters/numblocks.rb
new file mode 100644
index 00000000..b1095414
--- /dev/null
+++ b/lib/opal/rewriters/numblocks.rb
@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+require 'opal/rewriters/base'
+
+module Opal
+  module Rewriters
+    # This rewriter transforms the Ruby 2.7 numblocks to regular blocks:
+    #
+    # proc { _1 }
+    #      v
+    # proc { |_1| _1 }
+    class Numblocks < Base
+      def on_numblock(node)
+        left, arg_count, right = node.children
+
+        s(
+          :block,
+          left,
+          s(:args, *gen_args(arg_count)),
+          right
+        )
+      end
+
+      def gen_args(arg_count)
+        (1..arg_count).map do |i|
+          s(:arg, :"_#{i}")
+        end
+      end
+    end
+  end
+end
diff --git a/lib/opal/rewriters/opal_engine_check.rb b/lib/opal/rewriters/opal_engine_check.rb
new file mode 100644
index 00000000..a1ad9397
--- /dev/null
+++ b/lib/opal/rewriters/opal_engine_check.rb
@@ -0,0 +1,45 @@
+# frozen_string_literal: true
+
+require 'opal/rewriters/base'
+
+module Opal
+  module Rewriters
+    class OpalEngineCheck < Base
+      def on_if(node)
+        test, true_body, false_body = *node.children
+
+        if skip_check_present?(test)
+          process(true_body || s(:nil))
+        elsif skip_check_present_not?(test)
+          process(false_body || s(:nil))
+        else
+          super
+        end
+      end
+
+      def skip_check_present?(test)
+        test == RUBY_ENGINE_CHECK || test == RUBY_PLATFORM_CHECK
+      end
+
+      def skip_check_present_not?(test)
+        test == RUBY_ENGINE_CHECK_NOT || test == RUBY_PLATFORM_CHECK_NOT
+      end
+
+      RUBY_ENGINE_CHECK = s(:send, s(:const, nil, :RUBY_ENGINE),
+        :==, s(:str, 'opal')
+      )
+
+      RUBY_ENGINE_CHECK_NOT = s(:send, s(:const, nil, :RUBY_ENGINE),
+        :!=, s(:str, 'opal')
+      )
+
+      RUBY_PLATFORM_CHECK = s(:send, s(:const, nil, :RUBY_PLATFORM),
+        :==, s(:str, 'opal')
+      )
+
+      RUBY_PLATFORM_CHECK_NOT = s(:send, s(:const, nil, :RUBY_PLATFORM),
+        :!=, s(:str, 'opal')
+      )
+    end
+  end
+end
diff --git a/lib/opal/rewriters/pattern_matching.rb b/lib/opal/rewriters/pattern_matching.rb
new file mode 100644
index 00000000..f63631fb
--- /dev/null
+++ b/lib/opal/rewriters/pattern_matching.rb
@@ -0,0 +1,287 @@
+# frozen_string_literal: true
+
+require 'opal/rewriters/base'
+
+module Opal
+  module Rewriters
+    class PatternMatching < Base
+      def initialize
+        @depth = 0
+        super
+      end
+
+      # a => b
+      def on_match_pattern(node)
+        from, pat = *node
+
+        s(:begin,
+          s(:lvasgn, :"$pmvar", from),
+          s(:if,
+            convert_full_pattern(from, pat),
+            nil,
+            raise_no_matching_pattern_error(:"$pmvar")
+          )
+        )
+      end
+
+      # a in b
+      def on_match_pattern_p(node)
+        from, pat = *node
+
+        s(:if,
+          convert_full_pattern(from, pat),
+          s(:true),
+          s(:false)
+        )
+      end
+
+      # case a; in b; end
+      def on_case_match(node)
+        @depth += 1
+
+        cmvar = :"$cmvar#{@depth}"
+
+        from, *cases, els = *node
+
+        if els
+          process els
+        else
+          els = raise_no_matching_pattern_error(cmvar)
+        end
+
+        s(:begin,
+          s(:lvasgn, cmvar, from),
+          single_case_match(cmvar, *cases, els)
+        )
+      end
+
+      private
+
+      # raise NoMatchingPatternError, from
+      def raise_no_matching_pattern_error(from)
+        s(:send, nil, :raise,
+          s(:const, s(:cbase), :NoMatchingPatternError),
+          s(:lvar, from)
+        )
+      end
+
+      # in b
+      def single_case_match(from, *cases, els)
+        cas = cases.shift
+        pat, if_guard, body = *cas
+
+        pat = convert_full_pattern(from, pat)
+        if if_guard
+          guard, = *if_guard
+          case if_guard.type
+          when :if_guard
+            pat = s(:and, pat, guard)
+          when :unless_guard
+            pat = s(:and, pat, s(:send, guard, :!))
+          end
+        end
+
+        s(:if,
+          pat,
+          process(body),
+          if !cases.empty?
+            single_case_match(from, *cases, els)
+          elsif els != s(:empty_else)
+            els
+          end
+        )
+      end
+
+      def convert_full_pattern(from, pat)
+        if from.class == Symbol
+          from = s(:lvar, from)
+        end
+
+        converter = PatternConverter.new(pat)
+        converter.run!
+
+        # a, b, c = ::PatternMatching.(from, [...])
+        s(:masgn,
+          s(:mlhs,
+            *converter.variables
+          ),
+          s(:send,
+            s(:const, s(:cbase), :PatternMatching),
+            :call,
+            from,
+            converter.pattern,
+          )
+        )
+      end
+
+      class PatternConverter < ::Opal::Rewriters::Base
+        def initialize(pat)
+          @pat = pat
+          @variables = []
+        end
+
+        def run!
+          @outpat = process(@pat)
+        end
+
+        def pattern
+          @outpat
+        end
+
+        def variables
+          @variables.map { |i| s(:lvasgn, i) }
+        end
+
+        # a
+        def on_match_var(node)
+          var, = *node
+
+          @variables << var
+
+          s(:sym, :var)
+        end
+
+        # [...] => a
+        def on_match_as(node)
+          pat, save = *node
+
+          process(save)
+          array(s(:sym, :save), process(pat))
+        end
+
+        def on_literal(node)
+          array(s(:sym, :lit), node)
+        end
+
+        alias on_int on_literal
+        alias on_float on_literal
+        alias on_complex on_literal
+        alias on_rational on_literal
+        alias on_array on_literal
+        alias on_str on_literal
+        alias on_dstr on_literal
+        alias on_xstr on_literal
+        alias on_sym on_literal
+        alias on_irange on_literal
+        alias on_erange on_literal
+        alias on_const on_literal
+        alias on_regexp on_literal
+        alias on_lambda on_literal
+        alias on_begin on_literal
+
+        # ^a
+        def on_pin(node)
+          on_literal(node.children.first)
+        end
+
+        # *
+        def on_match_rest(node)
+          if node.children.empty?
+            array(s(:sym, :rest))
+          else
+            array(s(:sym, :rest), process(node.children.first))
+          end
+        end
+
+        # {} | []
+        def on_match_alt(node)
+          array(s(:sym, :any), *node.children.map(&method(:process)))
+        end
+
+        # MyStructName
+        def on_const_pattern(node)
+          array(s(:sym, :all), *node.children.map(&method(:process)))
+        end
+
+        # [0, 1, 2] or [*, 0, 1] or [0, 1, *]
+        def on_array_pattern(node, tail = false)
+          children = *node
+          children << s(:match_rest) if tail
+
+          fixed_size = true
+          array_size = 0
+
+          children = children.each do |i|
+            case i.type
+            when :match_rest
+              fixed_size = false
+            else
+              array_size += 1
+            end
+          end
+
+          array(
+            s(:sym, :array),
+            to_ast(fixed_size),
+            to_ast(array_size),
+            to_ast(children.map(&method(:process)))
+          )
+        end
+
+        # [0, 1, 2,]
+        def on_array_pattern_with_tail(node)
+          on_array_pattern(node, true)
+        end
+
+        # {a:, b:}
+        def on_hash_pattern(node)
+          children = *node
+
+          any_size = children.empty? ? to_ast(false) : to_ast(true)
+
+          children = children.map do |i|
+            case i.type
+            when :pair
+              array(i.children[0], process(i.children[1]))
+            when :match_var
+              array(s(:sym, i.children[0]), process(i))
+            when :match_nil_pattern
+              any_size = to_ast(false)
+              nil
+            when :match_rest
+              # Capturing rest?
+              if i.children.first
+                any_size = process(i.children.first)
+              else
+                any_size = to_ast(true)
+              end
+              nil
+            end
+          end.compact
+
+          array(s(:sym, :hash), any_size, array(*children))
+        end
+
+        # [*, a, b, *]
+        def on_find_pattern(node)
+          children = *node
+
+          children = children.map(&method(:process))
+
+          array(s(:sym, :find), array(*children))
+        end
+
+        private
+
+        def array(*args)
+          to_ast(args)
+        end
+
+        def to_ast(val)
+          case val
+          when Array
+            s(:array, *val)
+          when Integer
+            s(:int, val)
+          when true
+            s(:true)
+          when false
+            s(:false)
+          when nil
+            s(:nil)
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/lib/opal/rewriters/returnable_logic.rb b/lib/opal/rewriters/returnable_logic.rb
new file mode 100644
index 00000000..dc6c5713
--- /dev/null
+++ b/lib/opal/rewriters/returnable_logic.rb
@@ -0,0 +1,131 @@
+# frozen_string_literal: true
+
+require 'opal/rewriters/base'
+
+module Opal
+  module Rewriters
+    class ReturnableLogic < Base
+      def next_tmp
+        @counter ||= 0
+        @counter += 1
+        "$ret_or_#{@counter}"
+      end
+
+      def free_tmp
+        @counter -= 1
+      end
+
+      def reset_tmp_counter!
+        @counter = nil
+      end
+
+      def on_if(node)
+        test, = *node.children
+        # The if_test metadata signifies that we don't care about the return value except if it's
+        # truthy or falsy. And those tests will be carried out by the respective $truthy helper calls.
+        test.meta[:if_test] = true if test
+        super
+      end
+
+      def on_case(node)
+        lhs, *whens, els = *node.children
+        els ||= s(:nil)
+        lhs_tmp = next_tmp if lhs
+
+        out = build_if_from_when(node, lhs, lhs_tmp, whens, els)
+        free_tmp if lhs
+        out
+      end
+
+      # `a || b` / `a or b`
+      def on_or(node)
+        lhs, rhs = *node.children
+
+        if node.meta[:if_test]
+          # Let's forward the if_test to the lhs and rhs - since we don't care about the exact return
+          # value of our or, we neither do care about a return value of our lhs or rhs.
+          lhs.meta[:if_test] = rhs.meta[:if_test] = true
+          out = process(node.updated(:if, [lhs, s(:true), rhs]))
+        else
+          lhs_tmp = next_tmp
+          out = process(node.updated(:if, [s(:lvasgn, lhs_tmp, lhs), s(:js_tmp, lhs_tmp), rhs]))
+          free_tmp
+        end
+        out
+      end
+
+      # `a && b` / `a and b`
+      def on_and(node)
+        lhs, rhs = *node.children
+
+        if node.meta[:if_test]
+          lhs.meta[:if_test] = rhs.meta[:if_test] = true
+          out = process(node.updated(:if, [lhs, rhs, s(:false)]))
+        else
+          lhs_tmp = next_tmp
+          out = process(node.updated(:if, [s(:lvasgn, lhs_tmp, lhs), rhs, s(:js_tmp, lhs_tmp)]))
+          free_tmp
+        end
+        out
+      end
+
+      # Parser sometimes generates parentheses as a begin node. If it's a single node begin value, then
+      # let's forward the if_test metadata.
+      def on_begin(node)
+        if node.meta[:if_test] && node.children.count == 1
+          node.children.first.meta[:if_test] = true
+        end
+        node.meta.delete(:if_test)
+        super
+      end
+
+      private
+
+      def build_if_from_when(node, lhs, lhs_tmp, whens, els)
+        first_when, *next_whens = *whens
+
+        *parts, expr = *first_when.children
+
+        rule = build_rule_from_parts(node, lhs, lhs_tmp, parts)
+
+        first_when.updated(:if, [rule, process(expr), next_whens.empty? ? process(els) : build_if_from_when(nil, nil, lhs_tmp, next_whens, els)])
+      end
+
+      def build_rule_from_parts(node, lhs, lhs_tmp, parts)
+        lhs = if node && lhs_tmp
+                node.updated(:lvasgn, [lhs_tmp, process(lhs)])
+              else
+                s(:js_tmp, lhs_tmp)
+              end
+
+        first_part, *next_parts = *parts
+
+        subrule = if first_part.type == :splat
+                    splat_on = first_part.children.first
+                    iter_val = next_tmp
+                    block = s(:send, process(splat_on), :any?,
+                      s(:iter,
+                        s(:args, s(:arg, iter_val)),
+                        build_rule_from_parts(nil, nil, lhs_tmp, [s(:lvar, iter_val)])
+                      )
+                    )
+                    if node && lhs_tmp
+                      s(:begin, lhs, block)
+                    else
+                      block
+                    end
+                  elsif lhs_tmp
+                    s(:send, process(first_part), :===, lhs)
+                  else
+                    process(first_part)
+                  end
+
+        if next_parts.empty?
+          subrule
+        else
+          s(:if, subrule, s(:true), build_rule_from_parts(nil, nil, lhs_tmp, next_parts))
+        end
+      end
+    end
+  end
+end
diff --git a/lib/opal/rewriters/rubyspec/filters_rewriter.rb b/lib/opal/rewriters/rubyspec/filters_rewriter.rb
new file mode 100644
index 00000000..02af7437
--- /dev/null
+++ b/lib/opal/rewriters/rubyspec/filters_rewriter.rb
@@ -0,0 +1,85 @@
+# frozen_string_literal: true
+
+require 'opal/rewriters/base'
+
+module Opal
+  module Rubyspec
+    class FiltersRewriter < Opal::Rewriters::Base
+      class << self
+        def filters
+          @filters ||= []
+        end
+
+        def filter(spec_name)
+          filters << spec_name
+        end
+
+        alias fails filter
+        alias fails_badly filter
+
+        def filtered?(spec_name)
+          filters.include?(spec_name)
+        end
+
+        def clear_filters!
+          @filters = []
+        end
+      end
+
+      def initialize
+        @specs_stack = []
+      end
+
+      RUBYSPEC_DSL = %i[describe it context].freeze
+
+      def on_send(node)
+        _recvr, method_name, *args = *node
+
+        if rubyspec_dsl?(method_name)
+          dynamic!
+          spec_name, _ = *args.first
+          begin
+            @specs_stack.push(spec_name)
+            if skip?
+              s(:nil)
+            else
+              super
+            end
+          ensure
+            @specs_stack.pop
+          end
+        elsif method_name == :fixture
+          # We want to expand the fixture paths before autoload happens.
+          if args.all? { |i| i.type == :str }
+            as = args.map { |i| i.children.first }
+            s(:str, fixture(*as))
+          else
+            super
+          end
+        else
+          super
+        end
+      end
+
+      def skip?
+        self.class.filtered?(current_spec_name)
+      end
+
+      def rubyspec_dsl?(method_name)
+        RUBYSPEC_DSL.include?(method_name)
+      end
+
+      def current_spec_name
+        @specs_stack.join(' ')
+      end
+
+      # Adapted from: spec/mspec/lib/mspec/helpers/fixture.rb
+      def fixture(file, *args)
+        path = File.dirname(file)
+        path = path[0..-7] if path[-7..-1] == '/shared'
+        fixtures = path[-9..-1] == '/fixtures' ? '' : 'fixtures'
+        File.join(path, fixtures, args)
+      end
+    end
+  end
+end
diff --git a/lib/opal/server.rb b/lib/opal/server.rb
new file mode 100644
index 00000000..71c0130a
--- /dev/null
+++ b/lib/opal/server.rb
@@ -0,0 +1,5 @@
+# frozen_string_literal: true
+
+Opal.deprecation "`require 'opal/server` and `Opal::Server` are deprecated in favor of `require 'opal/sprockets/server'` and `Opal::Sprockets::Server` (now part of the opal-sprockets gem)."
+require 'opal/sprockets/server'
+Opal::Server = Opal::Sprockets::Server
diff --git a/lib/opal/simple_server.rb b/lib/opal/simple_server.rb
new file mode 100644
index 00000000..4612b5d3
--- /dev/null
+++ b/lib/opal/simple_server.rb
@@ -0,0 +1,98 @@
+# frozen_string_literal: true
+
+require 'opal/deprecations'
+
+# Opal::SimpleServer is a very basic Rack server for Opal assets, it relies on
+# Opal::Builder and Ruby corelib/stdlib. It's meant to be used just for local
+# development.
+#
+# For a more complete implementation see opal-sprockets (Rubygems) or
+# opal-webpack (NPM).
+#
+# @example (CLI)
+#   rackup -ropal -ropal/simple_server -b 'Opal.append_path("app"); run Opal::SimpleServer.new'
+class Opal::SimpleServer
+  require 'set'
+  require 'erb'
+
+  NotFound = Class.new(StandardError)
+
+  def initialize(options = {})
+    @prefix = options.fetch(:prefix, 'assets')
+    @main = options.fetch(:main, 'application')
+    @index_path = nil
+    yield self if block_given?
+    freeze
+  end
+
+  attr_accessor :main, :index_path
+
+  # @deprecated
+  # It's here for compatibility with Opal::Sprockets::Server
+  def append_path(path)
+    Opal.deprecation "`#{self.class}#append_path` is deprecated, please use `Opal.append_path(path)` instead (called from: #{caller(1, 1).first})"
+    Opal.append_path path
+  end
+
+  def call(env)
+    case env['PATH_INFO']
+    when %r{\A/#{@prefix}/(.*)\.m?js\z}
+      path, _cache_invalidator = Regexp.last_match(1).split('?', 2)
+      call_js(path)
+    else call_index
+    end
+  rescue NotFound => error
+    [404, {}, [error.to_s]]
+  end
+
+  def call_js(path)
+    asset = fetch_asset(path)
+    [
+      200,
+      { 'Content-Type' => 'application/javascript' },
+      [asset[:data], "\n", asset[:map].to_data_uri_comment],
+    ]
+  end
+
+  def fetch_asset(path)
+    builder = Opal::Builder.new
+    builder.build(path.gsub(/(\.(?:rb|js|opal))*\z/, ''))
+    {
+      data: builder.to_s,
+      map: builder.source_map,
+      source: builder.source_for(path),
+    }
+  end
+
+  def javascript_include_tag(path)
+    case Opal::Config.esm
+    when true
+      %{<script src="/#{@prefix}/#{path}.mjs#{cache_invalidator}" type="module"></script>}
+    when false
+      %{<script src="/#{@prefix}/#{path}.js#{cache_invalidator}"></script>}
+    end
+  end
+
+  def cache_invalidator
+    "?#{Time.now.to_i}"
+  end
+
+  def call_index
+    if @index_path
+      contents = File.read(@index_path)
+      html = ERB.new(contents).result binding
+    else
+      html = <<-HTML
+      <!doctype html>
+      <html>
+        <head>
+          <meta charset="utf8">
+          #{javascript_include_tag(main)}
+        </head>
+        <body></body>
+      </html>
+      HTML
+    end
+    [200, { 'Content-Type' => 'text/html' }, [html]]
+  end
+end
diff --git a/lib/opal/source_map.rb b/lib/opal/source_map.rb
new file mode 100644
index 00000000..9c839577
--- /dev/null
+++ b/lib/opal/source_map.rb
@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+
+module Opal
+  # To generate the source map for a single file use Opal::SourceMap::File.
+  # To combine multiple files the Opal::SourceMap::Index should be used.
+  module SourceMap
+    autoload :Map,   'opal/source_map/map'
+    autoload :File,  'opal/source_map/file'
+    autoload :Index, 'opal/source_map/index'
+    autoload :VLQ,   'opal/source_map/vlq'
+  end
+end
diff --git a/lib/opal/source_map/file.rb b/lib/opal/source_map/file.rb
new file mode 100644
index 00000000..e4fc477a
--- /dev/null
+++ b/lib/opal/source_map/file.rb
@@ -0,0 +1,202 @@
+# frozen_string_literal: true
+
+class Opal::SourceMap::File
+  include Opal::SourceMap::Map
+
+  attr_reader :fragments
+  attr_reader :file
+  attr_reader :source
+
+  def initialize(fragments, file, source, generated_code = nil)
+    @fragments = fragments
+    @file = file
+    @source = source
+    @names_map = Hash.new { |hash, name| hash[name] = hash.size }
+    @generated_code = generated_code
+    @absolute_mappings = nil
+  end
+
+  def generated_code
+    @generated_code ||= @fragments.map(&:code).join
+  end
+
+  # Proposed Format
+  # 1: {
+  # 2: "version" : 3,
+  # 3: "file": "out.js",
+  # 4: "sourceRoot": "",
+  # 5: "sources": ["foo.js", "bar.js"],
+  # 6: "sourcesContent": [null, null],
+  # 7: "names": ["src", "maps", "are", "fun"],
+  # 8: "mappings": "A,AAAB;;ABCDE;"
+  # 9: }
+  #
+  # Line 1: The entire file is a single JSON object
+  # Line 2: File version (always the first entry in the object) and must be a
+  #         positive integer.
+  # Line 3: An optional name of the generated code that this source map is
+  #         associated with.
+  # Line 4: An optional source root, useful for relocating source files on a server
+  #         or removing repeated values in the “sources” entry. This value is prepended to
+  #         the individual entries in the “source” field.
+  # Line 5: A list of original sources used by the “mappings” entry.
+  # Line 6: An optional list of source content, useful when the “source” can’t be
+  #         hosted. The contents are listed in the same order as the sources in line 5.
+  #         “null” may be used if some original sources should be retrieved by name.
+  # Line 7: A list of symbol names used by the “mappings” entry.
+  # Line 8: A string with the encoded mapping data.
+  def map(source_root: '')
+    {
+      version: 3,
+      # file: "out.js", # This is optional
+      sourceRoot: source_root,
+      sources: [file],
+      sourcesContent: [source.force_encoding('UTF-8')],
+      names: names,
+      mappings: Opal::SourceMap::VLQ.encode_mappings(relative_mappings),
+      # x_com_opalrb_original_lines: source.count("\n"),
+      # x_com_opalrb_generated_lines: generated_code.count("\n"),
+    }
+  end
+
+  def names
+    @names ||= begin
+      absolute_mappings # let the processing happen
+      @names_map.to_a.sort_by { |_, index| index }.map { |name, _| name }
+    end
+  end
+
+  # The fields in each segment are:
+  #
+  # 1. The zero-based starting column of the line in the generated code that
+  #    the segment represents. If this is the first field of the first segment, or
+  #    the first segment following a new generated line (“;”), then this field
+  #    holds the whole base 64 VLQ. Otherwise, this field contains a base 64 VLQ
+  #    that is relative to the previous occurrence of this field. Note that this
+  #    is different than the fields below because the previous value is reset
+  #    after every generated line.
+  #
+  # 2. If present, an zero-based index into the “sources” list. This field is
+  #    a base 64 VLQ relative to the previous occurrence of this field, unless
+  #    this is the first occurrence of this field, in which case the whole value
+  #    is represented.
+  #
+  # 3. If present, the zero-based starting line in the original source
+  #    represented. This field is a base 64 VLQ relative to the previous
+  #    occurrence of this field, unless this is the first occurrence of this
+  #    field, in which case the whole value is represented. Always present if
+  #    there is a source field.
+  #
+  # 4. If present, the zero-based starting column of the line in the source
+  #    represented. This field is a base 64 VLQ relative to the previous
+  #    occurrence of this field, unless this is the first occurrence of this
+  #    field, in which case the whole value is represented. Always present if
+  #    there is a source field.
+  #
+  # 5. If present, the zero-based index into the “names” list associated with
+  #    this segment. This field is a base 64 VLQ relative to the previous
+  #    occurrence of this field, unless this is the first occurrence of this
+  #    field, in which case the whole value is represented.
+  def segment_from_fragment(fragment, generated_column)
+    source_index     = 0                          # always 0, we're dealing with a single file
+    original_line    = (fragment.line || 0) - 1   # fragments have 1-based lines
+    original_line    = 0 if original_line < 0     # line 0 (-1) for fragments in source maps will crash
+                                                  # browsers devtools and the webpack build process
+    original_column  = fragment.column || 0       # fragments have 0-based columns
+
+    if fragment.source_map_name
+      map_name_index = (@names_map[fragment.source_map_name.to_s] ||= @names_map.size)
+      [
+        generated_column,
+        source_index,
+        original_line,
+        original_column,
+        map_name_index,
+      ]
+    else
+      [
+        generated_column,
+        source_index,
+        original_line,
+        original_column,
+      ]
+    end
+  end
+
+  def relative_mappings
+    @relative_mappings ||= begin
+      reference_segment = [0, 0, 0, 0, 0]
+      reference_name_index = 0
+      absolute_mappings.map do |absolute_mapping|
+        # [generated_column, source_index, original_line, original_column, map_name_index]
+        reference_segment[0] = 0 # reset the generated_column at each new line
+
+        absolute_mapping.map do |absolute_segment|
+          segment = []
+
+          segment[0] = absolute_segment[0] -  reference_segment[0]
+          segment[1] = absolute_segment[1] - (reference_segment[1] || 0)
+          segment[2] = absolute_segment[2] - (reference_segment[2] || 0)
+          segment[3] = absolute_segment[3] - (reference_segment[3] || 0)
+
+          # Since [4] can be nil we need to keep track of it in the reference_segment even if it's nil in absolute_segment
+          if absolute_segment[4]
+            segment[4] = absolute_segment[4].to_int - (reference_segment[4] || reference_name_index).to_int
+            reference_name_index = absolute_segment[4]
+          end
+
+          reference_segment = absolute_segment
+          segment
+        end
+      end
+    end
+  end
+
+  # The “mappings” data is broken down as follows:
+  #
+  # each group representing a line in the generated file is separated by a ”;”
+  # each segment is separated by a “,”
+  # each segment is made up of 1,4 or 5 variable length fields.
+  def absolute_mappings
+    @absolute_mappings ||= begin
+      mappings = []
+
+      fragments_by_line.each do |raw_segments|
+        generated_column = 0
+        segments = []
+        raw_segments.each do |(generated_code, fragment)|
+          unless fragment.is_a?(Opal::Fragment) && fragment.skip_source_map?
+            segments << segment_from_fragment(fragment, generated_column)
+          end
+          generated_column += generated_code.size
+        end
+        mappings << segments
+      end
+
+      mappings
+    end
+  end
+
+  private
+
+  def fragments_by_line
+    raw_mappings = [[]]
+    fragments.flat_map do |fragment|
+      fragment_code  = fragment.code
+      fragment_lines = fragment_code.split("\n", -1) # a negative limit won't suppress trailing null values
+      fragment_lines.each.with_index do |fragment_line, index|
+        raw_segment = [fragment_line, fragment]
+        if index.zero? && !fragment_line.size.zero?
+          raw_mappings.last << raw_segment
+        elsif index.zero? && fragment_line.size.zero?
+          # noop
+        elsif fragment_line.size.zero?
+          raw_mappings << []
+        else
+          raw_mappings << [raw_segment]
+        end
+      end
+    end
+    raw_mappings
+  end
+end
diff --git a/lib/opal/source_map/index.rb b/lib/opal/source_map/index.rb
new file mode 100644
index 00000000..d9e13dd2
--- /dev/null
+++ b/lib/opal/source_map/index.rb
@@ -0,0 +1,83 @@
+# frozen_string_literal: true
+
+class Opal::SourceMap::Index
+  include Opal::SourceMap::Map
+
+  attr_reader :source_maps
+
+  # @param source_maps [Opal::SourceMap::File]
+  # @param join: the string used to join the sources, empty by default, Opal::Builder uses "\n"
+  def initialize(source_maps, join: nil)
+    @source_maps = source_maps
+    @join = join
+  end
+
+  # To support concatenating generated code and other common post processing, an
+  # alternate representation of a map is supported:
+  #
+  #  1: {
+  #  2: version : 3,
+  #  3: file: “app.js”,
+  #  4: sections: [
+  #  5:  { offset: {line:0, column:0}, url: “url_for_part1.map” }
+  #  6:  { offset: {line:100, column:10}, map:
+  #  7:    {
+  #  8:      version : 3,
+  #  9:      file: “section.js”,
+  # 10:      sources: ["foo.js", "bar.js"],
+  # 11:      names: ["src", "maps", "are", "fun"],
+  # 12:      mappings: "AAAA,E;;ABCDE;"
+  # 13:    }
+  # 14:  }
+  # 15: ],
+  # 16: }
+  #
+  # The index map follow the form of the standard map
+  #
+  # Line 1: The entire file is an JSON object.
+  # Line 2: The version field. See the description of the standard map.
+  # Line 3: The name field. See the description of the standard map.
+  # Line 4: The sections field.
+  #
+  # The “sections” field is an array of JSON objects that itself has two fields
+  # “offset” and a source map reference. “offset” is an object with two fields,
+  # “line” and “column”, that represent the offset into generated code that the
+  # referenced source map represents.
+  #
+  # The other field must be either “url” or “map”. A “url” entry must be a URL
+  # where a source map can be found for this section and the url is resolved in the
+  # same way as the “sources” fields in the standard map. A “map” entry must be an
+  # embedded complete source map object. An embedded map does not inherit any
+  # values from the containing index map.
+  #
+  # The sections must be sorted by starting position and the represented sections
+  # may not overlap.
+  #
+  def map
+    offset_line = 0
+    offset_column = 0
+    {
+      version: 3,
+      # file: "app.js",
+      sections: @source_maps.map do |source_map|
+        map = {
+          offset: {
+            line: offset_line,
+            column: offset_column,
+          },
+          map: source_map.to_h,
+        }
+
+        generated_code  = source_map.generated_code
+        generated_code += @join if @join
+        new_lines_count = generated_code.count("\n")
+        last_line       = generated_code[generated_code.rindex("\n") + 1..-1]
+
+        offset_line    += new_lines_count
+        offset_column  += last_line.size
+
+        map
+      end
+    }
+  end
+end
diff --git a/lib/opal/source_map/map.rb b/lib/opal/source_map/map.rb
new file mode 100644
index 00000000..baca59af
--- /dev/null
+++ b/lib/opal/source_map/map.rb
@@ -0,0 +1,40 @@
+# frozen_string_literal: true
+
+require 'base64'
+require 'json'
+
+module Opal::SourceMap::Map
+  def to_h
+    @to_h || map
+  end
+
+  def to_json
+    to_h.to_json
+  end
+
+  def as_json(*)
+    to_h
+  end
+
+  def to_s
+    to_h.to_s
+  end
+
+  def to_data_uri_comment
+    "//# sourceMappingURL=data:application/json;base64,#{Base64.encode64(to_json).delete("\n")}"
+  end
+
+  # Marshaling for cache shortpath
+  def cache
+    @to_h ||= map
+    self
+  end
+
+  def marshal_dump
+    [to_h, generated_code]
+  end
+
+  def marshal_load(value)
+    @to_h, @generated_code = value
+  end
+end
diff --git a/lib/opal/source_map/vlq.rb b/lib/opal/source_map/vlq.rb
new file mode 100644
index 00000000..5d8af74d
--- /dev/null
+++ b/lib/opal/source_map/vlq.rb
@@ -0,0 +1,98 @@
+# Ported from http://github.com/maccman/sourcemap
+#
+# Adopted from ConradIrwin/ruby-source_map
+#   https://github.com/ConradIrwin/ruby-source_map/blob/master/lib/source_map/vlq.rb
+#
+# Resources
+#
+#   http://en.wikipedia.org/wiki/Variable-length_quantity
+#   https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit
+#   https://github.com/mozilla/source-map/blob/master/lib/source-map/base64-vlq.js
+#
+module Opal::SourceMap::VLQ
+  VLQ_BASE_SHIFT = 5
+  VLQ_BASE = 1 << VLQ_BASE_SHIFT
+  VLQ_BASE_MASK = VLQ_BASE - 1
+  VLQ_CONTINUATION_BIT = VLQ_BASE
+
+  BASE64_DIGITS = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'.split('')
+  BASE64_VALUES = (0...64).inject({}) { |h, i| h[BASE64_DIGITS[i]] = i; h }
+
+  # Public: Encode a list of numbers into a compact VLQ string.
+  #
+  # ary - An Array of Integers
+  #
+  # Returns a VLQ String.
+  def self.encode(ary)
+    result = []
+    ary.each do |n|
+      vlq = n < 0 ? ((-n) << 1) + 1 : n << 1
+      loop do
+        digit  = vlq & VLQ_BASE_MASK
+        vlq  >>= VLQ_BASE_SHIFT
+        digit |= VLQ_CONTINUATION_BIT if vlq > 0
+        result << BASE64_DIGITS[digit]
+
+        break unless vlq > 0
+      end
+    end
+    result.join
+  end
+
+  # Public: Decode a VLQ string.
+  #
+  # str - VLQ encoded String
+  #
+  # Returns an Array of Integers.
+  def self.decode(str)
+    result = []
+    chars = str.split('')
+    while chars.any?
+      vlq = 0
+      shift = 0
+      continuation = true
+      while continuation
+        char = chars.shift
+        raise ArgumentError unless char
+        digit = BASE64_VALUES[char]
+        continuation = false if (digit & VLQ_CONTINUATION_BIT) == 0
+        digit &= VLQ_BASE_MASK
+        vlq   += digit << shift
+        shift += VLQ_BASE_SHIFT
+      end
+      result << (vlq & 1 == 1 ? -(vlq >> 1) : vlq >> 1)
+    end
+    result
+  end
+
+  # Public: Encode a mapping array into a compact VLQ string.
+  #
+  # ary - Two dimensional Array of Integers.
+  #
+  # Returns a VLQ encoded String seperated by , and ;.
+  def self.encode_mappings(ary)
+    ary.map { |group|
+      group.map { |segment|
+        encode(segment)
+      }.join(',')
+    }.join(';')
+  end
+
+  # Public: Decode a VLQ string into mapping numbers.
+  #
+  # str - VLQ encoded String
+  #
+  # Returns an two dimensional Array of Integers.
+  def self.decode_mappings(str)
+    mappings = []
+
+    str.split(';').each_with_index do |group, index|
+      mappings[index] = []
+      group.split(',').each do |segment|
+        mappings[index] << decode(segment)
+      end
+    end
+
+    mappings
+  end
+end
diff --git a/lib/opal/util.rb b/lib/opal/util.rb
new file mode 100644
index 00000000..7e3cf237
--- /dev/null
+++ b/lib/opal/util.rb
@@ -0,0 +1,34 @@
+# frozen_string_literal: true
+
+require 'open3'
+
+module Opal
+  module Util
+    extend self
+
+    ExitStatusError = Class.new(StandardError)
+
+    # Used for uglifying source to minify.
+    #
+    #     Opal::Util.uglify("javascript contents")
+    #
+    # @param str [String] string to minify
+    # @return [String]
+    def uglify(source, mangle: false)
+      sh "bin/yarn -s run terser -c #{'-m' if mangle}", data: source
+    end
+
+    # Gzip code to check file size.
+    def gzip(source)
+      sh 'gzip -f', data: source
+    end
+
+    private
+
+    def sh(command, data:)
+      out, _err, status = Open3.capture3(command, stdin_data: data)
+      raise ExitStatusError, "exited with status #{status.exitstatus}" unless status.success?
+      out
+    end
+  end
+end
diff --git a/lib/opal/version.rb b/lib/opal/version.rb
new file mode 100644
index 00000000..8a2cd8bb
--- /dev/null
+++ b/lib/opal/version.rb
@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+module Opal
+  # WHEN RELEASING:
+  # Remember to update RUBY_ENGINE_VERSION in opal/corelib/constants.rb too!
+  VERSION = '1.5.0.dev'
+end
diff --git a/lib/tilt/opal.rb b/lib/tilt/opal.rb
new file mode 100644
index 00000000..36d4b9a9
--- /dev/null
+++ b/lib/tilt/opal.rb
@@ -0,0 +1,55 @@
+# frozen_string_literal: true
+
+require 'tilt'
+require 'opal/builder'
+require 'opal/config'
+require 'opal/version'
+
+module Opal
+  class TiltTemplate < Tilt::Template
+    self.default_mime_type = 'application/javascript'
+
+    def self.inherited(subclass)
+      subclass.default_mime_type = 'application/javascript'
+    end
+
+    def self.engine_initialized?
+      true
+    end
+
+    def self.version
+      ::Opal::VERSION
+    end
+
+    def self.compiler_options
+      Opal::Config.compiler_options.merge(requirable: true)
+    end
+
+    def initialize_engine
+      require_template_library 'opal'
+    end
+
+    def prepare
+      # stub
+    end
+
+    def evaluate(_scope, _locals)
+      if builder = @options[:builder]
+        builder.dup.build(file).to_s
+      elsif @options[:build]
+        Opal::Builder.build(file).to_s
+      else
+        compiler_options = (compiler_options || {}).merge!(file: file)
+        compiler = Compiler.new(data, compiler_options)
+        compiler.compile.to_s
+      end
+    end
+
+    def compiler_options
+      self.class.compiler_options
+    end
+  end
+end
+
+Tilt.register 'rb',   Opal::TiltTemplate
+Tilt.register 'opal', Opal::TiltTemplate
diff --git a/opal.gemspec b/opal.gemspec
new file mode 100644
index 00000000..69642c46
--- /dev/null
+++ b/opal.gemspec
@@ -0,0 +1,52 @@
+require_relative 'lib/opal/version'
+
+Gem::Specification.new do |spec|
+  spec.name         = 'opal'
+  spec.version      = Opal::VERSION
+  spec.author       = ['Elia Schito', 'meh.', 'Adam Beynon']
+  spec.email        = ['elia@schito.me', 'meh@schizofreni.co']
+
+  spec.summary      = %{Ruby runtime and core library for JavaScript}
+  spec.description  = %{Opal is a Ruby to JavaScript compiler. It is source-to-source, making it fast as a runtime. Opal includes a compiler (which can be run in any browser), a corelib and runtime implementation. The corelib/runtime is also very small.}
+  spec.homepage     = 'https://opalrb.com'
+  spec.license      = 'MIT'
+
+  spec.metadata["homepage_uri"]          = "https://opalrb.com/"
+  spec.metadata["bug_tracker_uri"]       = "https://github.com/opal/opal/issues"
+  spec.metadata["changelog_uri"]         = "https://github.com/opal/opal/blob/v#{spec.version}/CHANGELOG.md"
+  spec.metadata["readme_uri"]            = "https://github.com/opal/opal/blob/v#{spec.version}/README.md"
+  spec.metadata["api_documentation_uri"] = "http://opalrb.com/docs/api/v#{spec.version}/index.html"
+  spec.metadata["guides_uri"]            = "http://opalrb.com/docs/guides/v#{spec.version}/index.html"
+  spec.metadata["chat_uri"]              = "https://gitter.im/opal/opal"
+  spec.metadata["source_code_uri"]       = "https://github.com/opal/opal"
+
+  # Specify which files should be added to the gem when it is released.
+  # The `git ls-files -z` loads the files in the RubyGem that have been added into git.
+  # Remove symlinks because Windows doesn't always support them.
+  files = Dir.chdir(__dir__) { `git ls-files -z`.split("\x0") }.reject(&File.method(:symlink?))
+
+  spec.files         = files.grep(%r{^(test|spec|features)/})
+  spec.test_files    = files.grep_v(%r{^(test|spec|features)/})
+  spec.executables   = files.grep(%r{^exe/}) { |f| File.basename(f) }
+  spec.bindir        = 'exe'
+  spec.require_paths = ['lib']
+
+  spec.required_ruby_version = '>= 2.3'
+
+  spec.add_dependency 'ast', '>= 2.3.0'
+  spec.add_dependency 'parser', ['~> 3.0', '>= 3.0.3.2']
+
+  spec.add_development_dependency 'sourcemap', '~> 0.1.0'
+  spec.add_development_dependency 'rake', '~> 13.0'
+  spec.add_development_dependency 'rspec', '~> 3.9'
+  spec.add_development_dependency 'octokit', '~> 4.9'
+  spec.add_development_dependency 'bundler'
+  spec.add_development_dependency 'rack-test'
+  spec.add_development_dependency 'selenium-webdriver'
+  spec.add_development_dependency 'benchmark-ips', '< 2.8'
+  spec.add_development_dependency 'sinatra'
+  spec.add_development_dependency 'rubocop', '~> 0.67.0'
+  spec.add_development_dependency 'rubocop-performance', '~> 1.1.0'
+  spec.add_development_dependency 'rack'
+  spec.add_development_dependency 'webrick'
+end
diff --git a/opal/README.md b/opal/README.md
new file mode 100644
index 00000000..1464af8d
--- /dev/null
+++ b/opal/README.md
@@ -0,0 +1,15 @@
+# Opal corelib
+
+This is the Opal corelib implementation API documentation.
+The whole corelib is loaded upon `require 'opal'`.
+
+The `runtime.js` documentation is [available here](http://opalrb.com/docs/api/master/corelib/file.RUNTIME.html) (in master)
+
+# Cherry-picking
+
+Note that `require 'opal'` will load all of the corelib, which is likely to
+have a ton of stuff you don't need.
+
+If you're concerned about runtime size, you can `require 'opal/base'` and
+require anything you need, or `require 'opal/mini'` to have a working Ruby
+without *useless* stuff.
diff --git a/opal/corelib/array.rb b/opal/corelib/array.rb
new file mode 100644
index 00000000..fa89dc72
--- /dev/null
+++ b/opal/corelib/array.rb
@@ -0,0 +1,2453 @@
+# helpers: truthy, falsy, hash_ids, yield1, hash_get, hash_put, hash_delete, coerce_to, respond_to
+
+require 'corelib/enumerable'
+require 'corelib/numeric'
+
+class ::Array < `Array`
+  include ::Enumerable
+
+  # Mark all javascript arrays as being valid ruby arrays
+  `Opal.prop(self.$$prototype, '$$is_array', true)`
+
+  %x{
+    // Recent versions of V8 (> 7.1) only use an optimized implementation when Array.prototype is unmodified.
+    // For instance, "array-splice.tq" has a "fast path" (ExtractFastJSArray, defined in "src/codegen/code-stub-assembler.cc")
+    // but it's only enabled when "IsPrototypeInitialArrayPrototype()" is true.
+    //
+    // Older versions of V8 were using relatively fast JS-with-extensions code even when Array.prototype is modified:
+    // https://github.com/v8/v8/blob/7.0.1/src/js/array.js#L599-L642
+    //
+    // In short, Array operations are slow in recent versions of V8 when the Array.prototype has been tampered.
+    // So, when possible, we are using faster open-coded version to boost the performance.
+
+    // As of V8 8.4, depending on the size of the array, this is up to ~25x times faster than Array#shift()
+    // Implementation is heavily inspired by: https://github.com/nodejs/node/blob/ba684805b6c0eded76e5cd89ee00328ac7a59365/lib/internal/util.js#L341-L347
+    function shiftNoArg(list) {
+      var r = list[0];
+      var index = 1;
+      var length = list.length;
+      for (; index < length; index++) {
+        list[index - 1] = list[index];
+      }
+      list.pop();
+      return r;
+    }
+
+    function toArraySubclass(obj, klass) {
+      if (klass.$$name === Opal.Array) {
+        return obj;
+      } else {
+        return klass.$allocate().$replace(#{`obj`.to_a});
+      }
+    }
+
+    // A helper for keep_if and delete_if, filter is either Opal.truthy
+    // or Opal.falsy.
+    function filterIf(self, filter, block) {
+      var value, raised = null, updated = new Array(self.length);
+
+      for (var i = 0, i2 = 0, length = self.length; i < length; i++) {
+        if (!raised) {
+          try {
+            value = $yield1(block, self[i])
+          } catch(error) {
+            raised = error;
+          }
+        }
+
+        if (raised || filter(value)) {
+          updated[i2] = self[i]
+          i2 += 1;
+        }
+      }
+
+      if (i2 !== i) {
+        self.splice.apply(self, [0, updated.length].concat(updated));
+        self.splice(i2, updated.length);
+      }
+
+      if (raised) throw raised;
+    }
+  }
+
+  def self.[](*objects)
+    `toArraySubclass(objects, self)`
+  end
+
+  def initialize(size = nil, obj = nil, &block)
+    %x{
+      if (obj !== nil && block !== nil) {
+        #{::Kernel.warn('warning: block supersedes default value argument')}
+      }
+
+      if (size > #{::Integer::MAX}) {
+        #{::Kernel.raise ::ArgumentError, 'array size too big'}
+      }
+
+      if (arguments.length > 2) {
+        #{::Kernel.raise ::ArgumentError, "wrong number of arguments (#{`arguments.length`} for 0..2)"}
+      }
+
+      if (arguments.length === 0) {
+        self.splice(0, self.length);
+        return self;
+      }
+
+      if (arguments.length === 1) {
+        if (size.$$is_array) {
+          #{replace(size.to_a)}
+          return self;
+        } else if (#{size.respond_to? :to_ary}) {
+          #{replace(size.to_ary)}
+          return self;
+        }
+      }
+
+      size = $coerce_to(size, #{::Integer}, 'to_int');
+
+      if (size < 0) {
+        #{::Kernel.raise ::ArgumentError, 'negative array size'}
+      }
+
+      self.splice(0, self.length);
+      var i, value;
+
+      if (block === nil) {
+        for (i = 0; i < size; i++) {
+          self.push(obj);
+        }
+      }
+      else {
+        for (i = 0, value; i < size; i++) {
+          value = block(i);
+          self[i] = value;
+        }
+      }
+
+      return self;
+    }
+  end
+
+  def self.try_convert(obj)
+    ::Opal.coerce_to? obj, ::Array, :to_ary
+  end
+
+  def &(other)
+    other = if ::Array === other
+              other.to_a
+            else
+              `$coerce_to(other, #{::Array}, 'to_ary')`.to_a
+            end
+
+    %x{
+      var result = [], hash = #{{}}, i, length, item;
+
+      for (i = 0, length = other.length; i < length; i++) {
+        $hash_put(hash, other[i], true);
+      }
+
+      for (i = 0, length = self.length; i < length; i++) {
+        item = self[i];
+        if ($hash_delete(hash, item) !== undefined) {
+          result.push(item);
+        }
+      }
+
+      return result;
+    }
+  end
+
+  def |(other)
+    other = if ::Array === other
+              other.to_a
+            else
+              `$coerce_to(other, #{::Array}, 'to_ary')`.to_a
+            end
+
+    %x{
+      var hash = #{{}}, i, length, item;
+
+      for (i = 0, length = self.length; i < length; i++) {
+        $hash_put(hash, self[i], true);
+      }
+
+      for (i = 0, length = other.length; i < length; i++) {
+        $hash_put(hash, other[i], true);
+      }
+
+      return hash.$keys();
+    }
+  end
+
+  def *(other)
+    return join(other.to_str) if other.respond_to? :to_str
+
+    other = `$coerce_to(other, #{::Integer}, 'to_int')`
+
+    if `other < 0`
+      ::Kernel.raise ::ArgumentError, 'negative argument'
+    end
+
+    %x{
+      var result = [],
+          converted = #{to_a};
+
+      for (var i = 0; i < other; i++) {
+        result = result.concat(converted);
+      }
+
+      return result;
+    }
+  end
+
+  def +(other)
+    other = if ::Array === other
+              other.to_a
+            else
+              `$coerce_to(other, #{::Array}, 'to_ary')`.to_a
+            end
+
+    `self.concat(other)`
+  end
+
+  def -(other)
+    other = if ::Array === other
+              other.to_a
+            else
+              `$coerce_to(other, #{::Array}, 'to_ary')`.to_a
+            end
+
+    return [] if `self.length === 0`
+    return `self.slice()` if `other.length === 0`
+
+    %x{
+      var result = [], hash = #{{}}, i, length, item;
+
+      for (i = 0, length = other.length; i < length; i++) {
+        $hash_put(hash, other[i], true);
+      }
+
+      for (i = 0, length = self.length; i < length; i++) {
+        item = self[i];
+        if ($hash_get(hash, item) === undefined) {
+          result.push(item);
+        }
+      }
+
+      return result;
+    }
+  end
+
+  def <<(object)
+    `self.push(object)`
+
+    self
+  end
+
+  def <=>(other)
+    if ::Array === other
+      other = other.to_a
+    elsif other.respond_to? :to_ary
+      other = other.to_ary.to_a
+    else
+      return
+    end
+
+    %x{
+      if (#{hash} === #{other.hash}) {
+        return 0;
+      }
+
+      var count = Math.min(self.length, other.length);
+
+      for (var i = 0; i < count; i++) {
+        var tmp = #{`self[i]` <=> `other[i]`};
+
+        if (tmp !== 0) {
+          return tmp;
+        }
+      }
+
+      return #{`self.length` <=> `other.length`};
+    }
+  end
+
+  def ==(other)
+    %x{
+      var recursed = {};
+
+      function _eqeq(array, other) {
+        var i, length, a, b;
+
+        if (array === other)
+          return true;
+
+        if (!other.$$is_array) {
+          if ($respond_to(other, '$to_ary')) {
+            return #{`other` == `array`};
+          } else {
+            return false;
+          }
+        }
+
+        if (array.$$constructor !== Array)
+          array = #{`array`.to_a};
+        if (other.$$constructor !== Array)
+          other = #{`other`.to_a};
+
+        if (array.length !== other.length) {
+          return false;
+        }
+
+        recursed[#{`array`.object_id}] = true;
+
+        for (i = 0, length = array.length; i < length; i++) {
+          a = array[i];
+          b = other[i];
+          if (a.$$is_array) {
+            if (b.$$is_array && b.length !== a.length) {
+              return false;
+            }
+            if (!recursed.hasOwnProperty(#{`a`.object_id})) {
+              if (!_eqeq(a, b)) {
+                return false;
+              }
+            }
+          } else {
+            if (!#{`a` == `b`}) {
+              return false;
+            }
+          }
+        }
+
+        return true;
+      }
+
+      return _eqeq(self, other);
+    }
+  end
+
+  %x{
+    function $array_slice_range(self, index) {
+      var size = self.length,
+          exclude, from, to, result;
+
+      exclude = index.excl;
+      from    = index.begin === nil ? 0 : $coerce_to(index.begin, Opal.Integer, 'to_int');
+      to      = index.end === nil ? -1 : $coerce_to(index.end, Opal.Integer, 'to_int');
+
+      if (from < 0) {
+        from += size;
+
+        if (from < 0) {
+          return nil;
+        }
+      }
+
+      if (index.excl_rev && index.begin !== nil) {
+        from += 1;
+      }
+
+      if (from > size) {
+        return nil;
+      }
+
+      if (to < 0) {
+        to += size;
+
+        if (to < 0) {
+          return [];
+        }
+      }
+
+      if (!exclude || index.end === nil) {
+        to += 1;
+      }
+
+      result = self.slice(from, to);
+      return result;
+    }
+
+    function $array_slice_arithmetic_seq(self, index) {
+      var array, out = [], i = 0, pseudorange;
+
+      if (index.step < 0) {
+        pseudorange = {
+          begin: index.range.end,
+          end: index.range.begin,
+          excl: false,
+          excl_rev: index.range.excl
+        };
+        array = $array_slice_range(self, pseudorange).$reverse();
+      }
+      else {
+        array = $array_slice_range(self, index.range);
+      }
+
+      while (i < array.length) {
+        out.push(array[i]);
+        i += Math.abs(index.step);
+      }
+
+      return out;
+    }
+
+    function $array_slice_index_length(self, index, length) {
+      var size = self.length,
+          exclude, from, to, result;
+
+      index = $coerce_to(index, Opal.Integer, 'to_int');
+
+      if (index < 0) {
+        index += size;
+
+        if (index < 0) {
+          return nil;
+        }
+      }
+
+      if (length === undefined) {
+        if (index >= size || index < 0) {
+          return nil;
+        }
+
+        return self[index];
+      }
+      else {
+        length = $coerce_to(length, Opal.Integer, 'to_int');
+
+        if (length < 0 || index > size || index < 0) {
+          return nil;
+        }
+
+        result = self.slice(index, index + length);
+      }
+      return result;
+    }
+  }
+
+  def [](index, length = undefined)
+    %x{
+      if (index.$$is_range) {
+        return $array_slice_range(self, index);
+      }
+      else if (index.$$is_arithmetic_seq) {
+        return $array_slice_arithmetic_seq(self, index);
+      }
+      else {
+        return $array_slice_index_length(self, index, length);
+      }
+    }
+  end
+
+  def []=(index, value, extra = undefined)
+    data = nil
+    %x{
+      var i, size = self.length;
+
+      if (index.$$is_range) {
+        if (value.$$is_array)
+          data = #{value.to_a};
+        else if (#{value.respond_to? :to_ary})
+          data = #{value.to_ary.to_a};
+        else
+          data = [value];
+
+        var exclude = index.excl,
+            from    = index.begin === nil ? 0 : $coerce_to(index.begin, Opal.Integer, 'to_int'),
+            to      = index.end === nil ? -1 : $coerce_to(index.end, Opal.Integer, 'to_int');
+
+        if (from < 0) {
+          from += size;
+
+          if (from < 0) {
+            #{::Kernel.raise ::RangeError, "#{index.inspect} out of range"};
+          }
+        }
+
+        if (to < 0) {
+          to += size;
+        }
+
+        if (!exclude || index.end === nil) {
+          to += 1;
+        }
+
+        if (from > size) {
+          for (i = size; i < from; i++) {
+            self[i] = nil;
+          }
+        }
+
+        if (to < 0) {
+          self.splice.apply(self, [from, 0].concat(data));
+        }
+        else {
+          self.splice.apply(self, [from, to - from].concat(data));
+        }
+
+        return value;
+      } else {
+        if (extra === undefined) {
+          #{length = 1}
+        } else {
+          length = value;
+          value  = extra;
+
+          if (value.$$is_array)
+            data = #{value.to_a};
+          else if (#{value.respond_to? :to_ary})
+            data = #{value.to_ary.to_a};
+          else
+            data = [value];
+        }
+
+        var old;
+
+        index  = $coerce_to(index, #{::Integer}, 'to_int');
+        length = $coerce_to(length, #{::Integer}, 'to_int');
+
+        if (index < 0) {
+          old    = index;
+          index += size;
+
+          if (index < 0) {
+            #{::Kernel.raise ::IndexError, "index #{`old`} too small for array; minimum #{`-self.length`}"};
+          }
+        }
+
+        if (length < 0) {
+          #{::Kernel.raise ::IndexError, "negative length (#{length})"}
+        }
+
+        if (index > size) {
+          for (i = size; i < index; i++) {
+            self[i] = nil;
+          }
+        }
+
+        if (extra === undefined) {
+          self[index] = value;
+        }
+        else {
+          self.splice.apply(self, [index, length].concat(data));
+        }
+
+        return value;
+      }
+    }
+  end
+
+  def any?(pattern = undefined, &block)
+    `if (self.length === 0) return false`
+    super
+  end
+
+  def assoc(object)
+    %x{
+      for (var i = 0, length = self.length, item; i < length; i++) {
+        if (item = self[i], item.length && #{`item[0]` == object}) {
+          return item;
+        }
+      }
+
+      return nil;
+    }
+  end
+
+  def at(index)
+    %x{
+      index = $coerce_to(index, #{::Integer}, 'to_int')
+
+      if (index < 0) {
+        index += self.length;
+      }
+
+      if (index < 0 || index >= self.length) {
+        return nil;
+      }
+
+      return self[index];
+    }
+  end
+
+  def bsearch_index(&block)
+    return enum_for :bsearch_index unless block_given?
+
+    %x{
+      var min = 0,
+          max = self.length,
+          mid,
+          val,
+          ret,
+          smaller = false,
+          satisfied = nil;
+
+      while (min < max) {
+        mid = min + Math.floor((max - min) / 2);
+        val = self[mid];
+        ret = $yield1(block, val);
+
+        if (ret === true) {
+          satisfied = mid;
+          smaller = true;
+        }
+        else if (ret === false || ret === nil) {
+          smaller = false;
+        }
+        else if (ret.$$is_number) {
+          if (ret === 0) { return mid; }
+          smaller = (ret < 0);
+        }
+        else {
+          #{::Kernel.raise ::TypeError, "wrong argument type #{`ret`.class} (must be numeric, true, false or nil)"}
+        }
+
+        if (smaller) { max = mid; } else { min = mid + 1; }
+      }
+
+      return satisfied;
+    }
+  end
+
+  def bsearch(&block)
+    return enum_for :bsearch unless block_given?
+
+    index = bsearch_index(&block)
+
+    %x{
+      if (index != null && index.$$is_number) {
+        return self[index];
+      } else {
+        return index;
+      }
+    }
+  end
+
+  def cycle(n = nil, &block)
+    unless block_given?
+      return enum_for(:cycle, n) do
+        if n.nil?
+          ::Float::INFINITY
+        else
+          n = ::Opal.coerce_to!(n, ::Integer, :to_int)
+          n > 0 ? enumerator_size * n : 0
+        end
+      end
+    end
+
+    return if empty? || n == 0
+
+    %x{
+      var i, length, value;
+
+      if (n === nil) {
+        while (true) {
+          for (i = 0, length = self.length; i < length; i++) {
+            value = $yield1(block, self[i]);
+          }
+        }
+      }
+      else {
+        n = #{::Opal.coerce_to!(n, ::Integer, :to_int)};
+        if (n <= 0) {
+          return self;
+        }
+
+        while (n > 0) {
+          for (i = 0, length = self.length; i < length; i++) {
+            value = $yield1(block, self[i]);
+          }
+
+          n--;
+        }
+      }
+    }
+
+    self
+  end
+
+  def clear
+    `self.splice(0, self.length)`
+
+    self
+  end
+
+  def count(object = undefined, &block)
+    if `object !== undefined` || block
+      super
+    else
+      size
+    end
+  end
+
+  def initialize_copy(other)
+    replace other
+  end
+
+  def collect(&block)
+    return enum_for(:collect) { size } unless block_given?
+
+    %x{
+      var result = [];
+
+      for (var i = 0, length = self.length; i < length; i++) {
+        var value = $yield1(block, self[i]);
+        result.push(value);
+      }
+
+      return result;
+    }
+  end
+
+  def collect!(&block)
+    return enum_for(:collect!) { size } unless block_given?
+
+    %x{
+      for (var i = 0, length = self.length; i < length; i++) {
+        var value = $yield1(block, self[i]);
+        self[i] = value;
+      }
+    }
+
+    self
+  end
+
+  %x{
+    function binomial_coefficient(n, k) {
+      if (n === k || k === 0) {
+        return 1;
+      }
+
+      if (k > 0 && n > k) {
+        return binomial_coefficient(n - 1, k - 1) + binomial_coefficient(n - 1, k);
+      }
+
+      return 0;
+    }
+  }
+
+  def combination(n)
+    num = ::Opal.coerce_to! n, ::Integer, :to_int
+    return enum_for(:combination, num) { `binomial_coefficient(#{self}.length, num)` } unless block_given?
+
+    %x{
+      var i, length, stack, chosen, lev, done, next;
+
+      if (num === 0) {
+        #{yield []}
+      } else if (num === 1) {
+        for (i = 0, length = self.length; i < length; i++) {
+          #{yield `[self[i]]`}
+        }
+      }
+      else if (num === self.length) {
+        #{yield `self.slice()`}
+      }
+      else if (num >= 0 && num < self.length) {
+        stack = [];
+        for (i = 0; i <= num + 1; i++) {
+          stack.push(0);
+        }
+
+        chosen = [];
+        lev = 0;
+        done = false;
+        stack[0] = -1;
+
+        while (!done) {
+          chosen[lev] = self[stack[lev+1]];
+          while (lev < num - 1) {
+            lev++;
+            next = stack[lev+1] = stack[lev] + 1;
+            chosen[lev] = self[next];
+          }
+          #{ yield `chosen.slice()` }
+          lev++;
+          do {
+            done = (lev === 0);
+            stack[lev]++;
+            lev--;
+          } while ( stack[lev+1] + num === self.length + lev + 1 );
+        }
+      }
+    }
+    self
+  end
+
+  def repeated_combination(n)
+    num = ::Opal.coerce_to! n, ::Integer, :to_int
+
+    unless block_given?
+      return enum_for(:repeated_combination, num) { `binomial_coefficient(self.length + num - 1, num)` }
+    end
+
+    %x{
+      function iterate(max, from, buffer, self) {
+        if (buffer.length == max) {
+          var copy = buffer.slice();
+          #{yield `copy`}
+          return;
+        }
+        for (var i = from; i < self.length; i++) {
+          buffer.push(self[i]);
+          iterate(max, i, buffer, self);
+          buffer.pop();
+        }
+      }
+
+      if (num >= 0) {
+        iterate(num, 0, [], self);
+      }
+    }
+    self
+  end
+
+  def compact
+    %x{
+      var result = [];
+
+      for (var i = 0, length = self.length, item; i < length; i++) {
+        if ((item = self[i]) !== nil) {
+          result.push(item);
+        }
+      }
+
+      return result;
+    }
+  end
+
+  def compact!
+    %x{
+      var original = self.length;
+
+      for (var i = 0, length = self.length; i < length; i++) {
+        if (self[i] === nil) {
+          self.splice(i, 1);
+
+          length--;
+          i--;
+        }
+      }
+
+      return self.length === original ? nil : self;
+    }
+  end
+
+  def concat(*others)
+    others = others.map do |other|
+      other = if ::Array === other
+                other.to_a
+              else
+                `$coerce_to(other, #{::Array}, 'to_ary')`.to_a
+              end
+
+      if other.equal?(self)
+        other = other.dup
+      end
+
+      other
+    end
+
+    others.each do |other|
+      %x{
+        for (var i = 0, length = other.length; i < length; i++) {
+          self.push(other[i]);
+        }
+      }
+    end
+
+    self
+  end
+
+  def delete(object)
+    %x{
+      var original = self.length;
+
+      for (var i = 0, length = original; i < length; i++) {
+        if (#{`self[i]` == object}) {
+          self.splice(i, 1);
+
+          length--;
+          i--;
+        }
+      }
+
+      if (self.length === original) {
+        if (#{block_given?}) {
+          return #{yield};
+        }
+        return nil;
+      }
+      return object;
+    }
+  end
+
+  def delete_at(index)
+    %x{
+      index = $coerce_to(index, #{::Integer}, 'to_int');
+
+      if (index < 0) {
+        index += self.length;
+      }
+
+      if (index < 0 || index >= self.length) {
+        return nil;
+      }
+
+      var result = self[index];
+
+      self.splice(index, 1);
+
+      return result;
+    }
+  end
+
+  def delete_if(&block)
+    return enum_for(:delete_if) { size } unless block_given?
+    %x{filterIf(self, $falsy, block)}
+    self
+  end
+
+  def difference(*arrays)
+    arrays.reduce(to_a.dup) { |a, b| a - b }
+  end
+
+  def dig(idx, *idxs)
+    item = self[idx]
+
+    %x{
+      if (item === nil || idxs.length === 0) {
+        return item;
+      }
+    }
+
+    unless item.respond_to?(:dig)
+      ::Kernel.raise ::TypeError, "#{item.class} does not have #dig method"
+    end
+
+    item.dig(*idxs)
+  end
+
+  def drop(number)
+    %x{
+      number = $coerce_to(number, #{::Integer}, 'to_int');
+
+      if (number < 0) {
+        #{::Kernel.raise ::ArgumentError}
+      }
+
+      return self.slice(number);
+    }
+  end
+
+  def dup
+    %x{
+      if (self.$$class === Opal.Array &&
+          self.$$class.$allocate.$$pristine &&
+          self.$copy_instance_variables.$$pristine &&
+          self.$initialize_dup.$$pristine) {
+        return self.slice(0);
+      }
+    }
+
+    super
+  end
+
+  def each(&block)
+    return enum_for(:each) { size } unless block_given?
+
+    %x{
+      for (var i = 0, length = self.length; i < length; i++) {
+        var value = $yield1(block, self[i]);
+      }
+    }
+
+    self
+  end
+
+  def each_index(&block)
+    return enum_for(:each_index) { size } unless block_given?
+
+    %x{
+      for (var i = 0, length = self.length; i < length; i++) {
+        var value = $yield1(block, i);
+      }
+    }
+
+    self
+  end
+
+  def empty?
+    `self.length === 0`
+  end
+
+  def eql?(other)
+    %x{
+      var recursed = {};
+
+      function _eql(array, other) {
+        var i, length, a, b;
+
+        if (!other.$$is_array) {
+          return false;
+        }
+
+        other = #{other.to_a};
+
+        if (array.length !== other.length) {
+          return false;
+        }
+
+        recursed[#{`array`.object_id}] = true;
+
+        for (i = 0, length = array.length; i < length; i++) {
+          a = array[i];
+          b = other[i];
+          if (a.$$is_array) {
+            if (b.$$is_array && b.length !== a.length) {
+              return false;
+            }
+            if (!recursed.hasOwnProperty(#{`a`.object_id})) {
+              if (!_eql(a, b)) {
+                return false;
+              }
+            }
+          } else {
+            if (!#{`a`.eql?(`b`)}) {
+              return false;
+            }
+          }
+        }
+
+        return true;
+      }
+
+      return _eql(self, other);
+    }
+  end
+
+  def fetch(index, defaults = undefined, &block)
+    %x{
+      var original = index;
+
+      index = $coerce_to(index, #{::Integer}, 'to_int');
+
+      if (index < 0) {
+        index += self.length;
+      }
+
+      if (index >= 0 && index < self.length) {
+        return self[index];
+      }
+
+      if (block !== nil && defaults != null) {
+        #{warn('warning: block supersedes default value argument')}
+      }
+
+      if (block !== nil) {
+        return block(original);
+      }
+
+      if (defaults != null) {
+        return defaults;
+      }
+
+      if (self.length === 0) {
+        #{::Kernel.raise ::IndexError, "index #{`original`} outside of array bounds: 0...0"}
+      }
+      else {
+        #{::Kernel.raise ::IndexError, "index #{`original`} outside of array bounds: -#{`self.length`}...#{`self.length`}"};
+      }
+    }
+  end
+
+  def fill(*args, &block)
+    %x{
+      var i, length, value;
+    }
+
+    if block
+      if `args.length > 2`
+        ::Kernel.raise ::ArgumentError, "wrong number of arguments (#{args.length} for 0..2)"
+      end
+
+      one, two = args
+    else
+      if `args.length == 0`
+        ::Kernel.raise ::ArgumentError, 'wrong number of arguments (0 for 1..3)'
+      elsif `args.length > 3`
+        ::Kernel.raise ::ArgumentError, "wrong number of arguments (#{args.length} for 1..3)"
+      end
+
+      obj, one, two = args
+    end
+
+    if ::Range === one
+      ::Kernel.raise ::TypeError, 'length invalid with range' if two
+
+      left   = `one.begin === nil ? 0 : $coerce_to(one.begin, #{::Integer}, 'to_int')`
+      `left += this.length` if `left < 0`
+      ::Kernel.raise ::RangeError, "#{one.inspect} out of range" if `left < 0`
+
+      right = `one.end === nil ? -1 : $coerce_to(one.end, #{::Integer}, 'to_int')`
+      `right += this.length` if `right < 0`
+      `right += 1` unless one.exclude_end?
+
+      return self if `right <= left`
+    elsif one
+      left   = `$coerce_to(one, #{::Integer}, 'to_int')`
+      `left += this.length` if `left < 0`
+      left   = 0 if `left < 0`
+
+      if two
+        right = `$coerce_to(two, #{::Integer}, 'to_int')`
+
+        return self if `right == 0`
+
+        `right += left`
+      else
+        right = `this.length`
+      end
+    else
+      left  = 0
+      right = `this.length`
+    end
+
+    if `left > this.length`
+      %x{
+        for (i = this.length; i < right; i++) {
+          self[i] = nil;
+        }
+      }
+    end
+
+    if `right > this.length`
+      `this.length = right`
+    end
+
+    if block
+      %x{
+        for (length = this.length; left < right; left++) {
+          value = block(left);
+          self[left] = value;
+        }
+      }
+    else
+      %x{
+        for (length = this.length; left < right; left++) {
+          self[left] = #{obj};
+        }
+      }
+    end
+
+    self
+  end
+
+  def first(count = undefined)
+    %x{
+      if (count == null) {
+        return self.length === 0 ? nil : self[0];
+      }
+
+      count = $coerce_to(count, #{::Integer}, 'to_int');
+
+      if (count < 0) {
+        #{::Kernel.raise ::ArgumentError, 'negative array size'};
+      }
+
+      return self.slice(0, count);
+    }
+  end
+
+  def flatten(level = undefined)
+    %x{
+      function _flatten(array, level) {
+        var result = [],
+            i, length,
+            item, ary;
+
+        array = #{`array`.to_a};
+
+        for (i = 0, length = array.length; i < length; i++) {
+          item = array[i];
+
+          if (!$respond_to(item, '$to_ary', true)) {
+            result.push(item);
+            continue;
+          }
+
+          ary = #{`item`.to_ary};
+
+          if (ary === nil) {
+            result.push(item);
+            continue;
+          }
+
+          if (!ary.$$is_array) {
+            #{::Kernel.raise ::TypeError};
+          }
+
+          if (ary === self) {
+            #{::Kernel.raise ::ArgumentError};
+          }
+
+          switch (level) {
+          case undefined:
+            result = result.concat(_flatten(ary));
+            break;
+          case 0:
+            result.push(ary);
+            break;
+          default:
+            result.push.apply(result, _flatten(ary, level - 1));
+          }
+        }
+        return result;
+      }
+
+      if (level !== undefined) {
+        level = $coerce_to(level, #{::Integer}, 'to_int');
+      }
+
+      return _flatten(self, level);
+    }
+  end
+
+  def flatten!(level = undefined)
+    %x{
+      var flattened = #{flatten level};
+
+      if (self.length == flattened.length) {
+        for (var i = 0, length = self.length; i < length; i++) {
+          if (self[i] !== flattened[i]) {
+            break;
+          }
+        }
+
+        if (i == length) {
+          return nil;
+        }
+      }
+
+      #{replace `flattened`};
+    }
+
+    self
+  end
+
+  def hash
+    %x{
+      var top = ($hash_ids === undefined),
+          result = ['A'],
+          hash_id = self.$object_id(),
+          item, i, key;
+
+      try {
+        if (top) {
+          $hash_ids = Object.create(null);
+        }
+
+        // return early for recursive structures
+        if ($hash_ids[hash_id]) {
+          return 'self';
+        }
+
+        for (key in $hash_ids) {
+          item = $hash_ids[key];
+          if (#{eql?(`item`)}) {
+            return 'self';
+          }
+        }
+
+        $hash_ids[hash_id] = self;
+
+        for (i = 0; i < self.length; i++) {
+          item = self[i];
+          result.push(item.$hash());
+        }
+
+        return result.join(',');
+      } finally {
+        if (top) {
+          $hash_ids = undefined;
+        }
+      }
+    }
+  end
+
+  def include?(member)
+    %x{
+      for (var i = 0, length = self.length; i < length; i++) {
+        if (#{`self[i]` == member}) {
+          return true;
+        }
+      }
+
+      return false;
+    }
+  end
+
+  def index(object = undefined, &block)
+    %x{
+      var i, length, value;
+
+      if (object != null && block !== nil) {
+        #{warn('warning: given block not used')}
+      }
+
+      if (object != null) {
+        for (i = 0, length = self.length; i < length; i++) {
+          if (#{`self[i]` == object}) {
+            return i;
+          }
+        }
+      }
+      else if (block !== nil) {
+        for (i = 0, length = self.length; i < length; i++) {
+          value = block(self[i]);
+
+          if (value !== false && value !== nil) {
+            return i;
+          }
+        }
+      }
+      else {
+        return #{enum_for :index};
+      }
+
+      return nil;
+    }
+  end
+
+  def insert(index, *objects)
+    %x{
+      index = $coerce_to(index, #{::Integer}, 'to_int');
+
+      if (objects.length > 0) {
+        if (index < 0) {
+          index += self.length + 1;
+
+          if (index < 0) {
+            #{ ::Kernel.raise ::IndexError, "#{index} is out of bounds" };
+          }
+        }
+        if (index > self.length) {
+          for (var i = self.length; i < index; i++) {
+            self.push(nil);
+          }
+        }
+
+        self.splice.apply(self, [index, 0].concat(objects));
+      }
+    }
+
+    self
+  end
+
+  `var inspect_stack = []`
+
+  def inspect
+    %x{
+      var result = [],
+      id = #{__id__},
+      pushed = true;
+    }
+
+    begin
+      %x{
+        if (inspect_stack.indexOf(id) !== -1) {
+          pushed = false;
+          return '[...]';
+        }
+        inspect_stack.push(id)
+
+        for (var i = 0, length = self.length; i < length; i++) {
+          var item = #{self[`i`]};
+
+          result.push(#{Opal.inspect(`item`)});
+        }
+
+        return '[' + result.join(', ') + ']';
+      }
+      nil
+    ensure
+      `if (pushed) inspect_stack.pop()`
+    end
+  end
+
+  def intersection(*arrays)
+    arrays.reduce(to_a.dup) { |a, b| a & b }
+  end
+
+  def intersect?(other)
+    !intersection(other).empty?
+  end
+
+  def join(sep = nil)
+    return '' if `self.length === 0`
+
+    if `sep === nil`
+      sep = $,
+    end
+
+    %x{
+      var result = [];
+      var i, length, item, tmp;
+
+      for (i = 0, length = self.length; i < length; i++) {
+        item = self[i];
+
+        if ($respond_to(item, '$to_str')) {
+          tmp = #{`item`.to_str};
+
+          if (tmp !== nil) {
+            result.push(#{`tmp`.to_s});
+
+            continue;
+          }
+        }
+
+        if ($respond_to(item, '$to_ary')) {
+          tmp = #{`item`.to_ary};
+
+          if (tmp === self) {
+            #{::Kernel.raise ::ArgumentError};
+          }
+
+          if (tmp !== nil) {
+            result.push(#{`tmp`.join(sep)});
+
+            continue;
+          }
+        }
+
+        if ($respond_to(item, '$to_s')) {
+          tmp = #{`item`.to_s};
+
+          if (tmp !== nil) {
+            result.push(tmp);
+
+            continue;
+          }
+        }
+
+        #{::Kernel.raise ::NoMethodError.new("#{Opal.inspect(item)} doesn't respond to #to_str, #to_ary or #to_s", 'to_str')};
+      }
+
+      if (sep === nil) {
+        return result.join('');
+      }
+      else {
+        return result.join(#{::Opal.coerce_to!(sep, ::String, :to_str).to_s});
+      }
+    }
+  end
+
+  def keep_if(&block)
+    return enum_for(:keep_if) { size } unless block_given?
+    %x{filterIf(self, $truthy, block)}
+    self
+  end
+
+  def last(count = undefined)
+    %x{
+      if (count == null) {
+        return self.length === 0 ? nil : self[self.length - 1];
+      }
+
+      count = $coerce_to(count, #{::Integer}, 'to_int');
+
+      if (count < 0) {
+        #{::Kernel.raise ::ArgumentError, 'negative array size'};
+      }
+
+      if (count > self.length) {
+        count = self.length;
+      }
+
+      return self.slice(self.length - count, self.length);
+    }
+  end
+
+  def length
+    `self.length`
+  end
+
+  def max(n = undefined, &block)
+    each.max(n, &block)
+  end
+
+  def min(&block)
+    each.min(&block)
+  end
+
+  %x{
+    // Returns the product of from, from-1, ..., from - how_many + 1.
+    function descending_factorial(from, how_many) {
+      var count = how_many >= 0 ? 1 : 0;
+      while (how_many) {
+        count *= from;
+        from--;
+        how_many--;
+      }
+      return count;
+    }
+  }
+
+  def permutation(num = undefined, &block)
+    unless block_given?
+      return enum_for(:permutation, num) do
+        `descending_factorial(self.length, num === undefined ? self.length : num)`
+      end
+    end
+
+    %x{
+      var permute, offensive, output;
+
+      if (num === undefined) {
+        num = self.length;
+      }
+      else {
+        num = $coerce_to(num, #{::Integer}, 'to_int');
+      }
+
+      if (num < 0 || self.length < num) {
+        // no permutations, yield nothing
+      }
+      else if (num === 0) {
+        // exactly one permutation: the zero-length array
+        #{ yield [] }
+      }
+      else if (num === 1) {
+        // this is a special, easy case
+        for (var i = 0; i < self.length; i++) {
+          #{ yield `[self[i]]` }
+        }
+      }
+      else {
+        // this is the general case
+        #{ perm = Array.new(num) };
+        #{ used = Array.new(`self.length`, false) };
+
+        permute = function(num, perm, index, used, blk) {
+          self = this;
+          for(var i = 0; i < self.length; i++){
+            if(#{ !used[`i`] }) {
+              perm[index] = i;
+              if(index < num - 1) {
+                used[i] = true;
+                permute.call(self, num, perm, index + 1, used, blk);
+                used[i] = false;
+              }
+              else {
+                output = [];
+                for (var j = 0; j < perm.length; j++) {
+                  output.push(self[perm[j]]);
+                }
+                $yield1(blk, output);
+              }
+            }
+          }
+        }
+
+        if (#{block_given?}) {
+          // offensive (both definitions) copy.
+          offensive = self.slice();
+          permute.call(offensive, num, perm, 0, used, block);
+        }
+        else {
+          permute.call(self, num, perm, 0, used, block);
+        }
+      }
+    }
+
+    self
+  end
+
+  def repeated_permutation(n)
+    num = ::Opal.coerce_to! n, ::Integer, :to_int
+    return enum_for(:repeated_permutation, num) { num >= 0 ? size**num : 0 } unless block_given?
+
+    %x{
+      function iterate(max, buffer, self) {
+        if (buffer.length == max) {
+          var copy = buffer.slice();
+          #{yield `copy`}
+          return;
+        }
+        for (var i = 0; i < self.length; i++) {
+          buffer.push(self[i]);
+          iterate(max, buffer, self);
+          buffer.pop();
+        }
+      }
+
+      iterate(num, [], self.slice());
+    }
+
+    self
+  end
+
+  def pop(count = undefined)
+    if `count === undefined`
+      return if `self.length === 0`
+      return `self.pop()`
+    end
+
+    count = `$coerce_to(count, #{::Integer}, 'to_int')`
+
+    if `count < 0`
+      ::Kernel.raise ::ArgumentError, 'negative array size'
+    end
+
+    return [] if `self.length === 0`
+
+    if `count === 1`
+      `[self.pop()]`
+    elsif `count > self.length`
+      `self.splice(0, self.length)`
+    else
+      `self.splice(self.length - count, self.length)`
+    end
+  end
+
+  def product(*args, &block)
+    %x{
+      var result = #{block_given?} ? null : [],
+          n = args.length + 1,
+          counters = new Array(n),
+          lengths  = new Array(n),
+          arrays   = new Array(n),
+          i, m, subarray, len, resultlen = 1;
+
+      arrays[0] = self;
+      for (i = 1; i < n; i++) {
+        arrays[i] = $coerce_to(args[i - 1], #{::Array}, 'to_ary');
+      }
+
+      for (i = 0; i < n; i++) {
+        len = arrays[i].length;
+        if (len === 0) {
+          return result || self;
+        }
+        resultlen *= len;
+        if (resultlen > 2147483647) {
+          #{::Kernel.raise ::RangeError, 'too big to product'}
+        }
+        lengths[i] = len;
+        counters[i] = 0;
+      }
+
+      outer_loop: for (;;) {
+        subarray = [];
+        for (i = 0; i < n; i++) {
+          subarray.push(arrays[i][counters[i]]);
+        }
+        if (result) {
+          result.push(subarray);
+        } else {
+          #{yield `subarray`}
+        }
+        m = n - 1;
+        counters[m]++;
+        while (counters[m] === lengths[m]) {
+          counters[m] = 0;
+          if (--m < 0) break outer_loop;
+          counters[m]++;
+        }
+      }
+
+      return result || self;
+    }
+  end
+
+  def push(*objects)
+    %x{
+      for (var i = 0, length = objects.length; i < length; i++) {
+        self.push(objects[i]);
+      }
+    }
+
+    self
+  end
+
+  def rassoc(object)
+    %x{
+      for (var i = 0, length = self.length, item; i < length; i++) {
+        item = self[i];
+
+        if (item.length && item[1] !== undefined) {
+          if (#{`item[1]` == object}) {
+            return item;
+          }
+        }
+      }
+
+      return nil;
+    }
+  end
+
+  def reject(&block)
+    return enum_for(:reject) { size } unless block_given?
+
+    %x{
+      var result = [];
+
+      for (var i = 0, length = self.length, value; i < length; i++) {
+        value = block(self[i]);
+
+        if (value === false || value === nil) {
+          result.push(self[i]);
+        }
+      }
+      return result;
+    }
+  end
+
+  def reject!(&block)
+    return enum_for(:reject!) { size } unless block_given?
+
+    original = length
+    delete_if(&block)
+
+    unless length == original
+      self
+    end
+  end
+
+  def replace(other)
+    other = if ::Array === other
+              other.to_a
+            else
+              `$coerce_to(other, #{::Array}, 'to_ary')`.to_a
+            end
+
+    %x{
+      self.splice(0, self.length);
+      self.push.apply(self, other);
+    }
+
+    self
+  end
+
+  def reverse
+    `self.slice(0).reverse()`
+  end
+
+  def reverse!
+    `self.reverse()`
+  end
+
+  def reverse_each(&block)
+    return enum_for(:reverse_each) { size } unless block_given?
+
+    reverse.each(&block)
+    self
+  end
+
+  def rindex(object = undefined, &block)
+    %x{
+      var i, value;
+
+      if (object != null && block !== nil) {
+        #{warn('warning: given block not used')}
+      }
+
+      if (object != null) {
+        for (i = self.length - 1; i >= 0; i--) {
+          if (i >= self.length) {
+            break;
+          }
+          if (#{`self[i]` == `object`}) {
+            return i;
+          }
+        }
+      }
+      else if (block !== nil) {
+        for (i = self.length - 1; i >= 0; i--) {
+          if (i >= self.length) {
+            break;
+          }
+
+          value = block(self[i]);
+
+          if (value !== false && value !== nil) {
+            return i;
+          }
+        }
+      }
+      else if (object == null) {
+        return #{enum_for :rindex};
+      }
+
+      return nil;
+    }
+  end
+
+  def rotate(n = 1)
+    %x{
+      var ary, idx, firstPart, lastPart;
+
+      n = $coerce_to(n, #{::Integer}, 'to_int')
+
+      if (self.length === 1) {
+        return self.slice();
+      }
+      if (self.length === 0) {
+        return [];
+      }
+
+      ary = self.slice();
+      idx = n % ary.length;
+
+      firstPart = ary.slice(idx);
+      lastPart = ary.slice(0, idx);
+      return firstPart.concat(lastPart);
+    }
+  end
+
+  def rotate!(cnt = 1)
+    %x{
+      if (self.length === 0 || self.length === 1) {
+        return self;
+      }
+      cnt = $coerce_to(cnt, #{::Integer}, 'to_int');
+    }
+    ary = rotate(cnt)
+    replace ary
+  end
+
+  class self::SampleRandom
+    def initialize(rng)
+      @rng = rng
+    end
+
+    def rand(size)
+      random = `$coerce_to(#{@rng.rand(size)}, #{::Integer}, 'to_int')`
+      ::Kernel.raise ::RangeError, 'random value must be >= 0' if `random < 0`
+      ::Kernel.raise ::RangeError, 'random value must be less than Array size' unless `random < size`
+
+      random
+    end
+  end
+
+  def sample(count = undefined, options = undefined)
+    return at ::Kernel.rand(`self.length`) if `count === undefined`
+
+    if `options === undefined`
+      if (o = ::Opal.coerce_to? count, ::Hash, :to_hash)
+        options = o
+        count = nil
+      else
+        options = nil
+        count = `$coerce_to(count, #{::Integer}, 'to_int')`
+      end
+    else
+      count = `$coerce_to(count, #{::Integer}, 'to_int')`
+      options = `$coerce_to(options, #{::Hash}, 'to_hash')`
+    end
+
+    if count && `count < 0`
+      ::Kernel.raise ::ArgumentError, 'count must be greater than 0'
+    end
+
+    rng = options[:random] if options
+    rng = if rng && rng.respond_to?(:rand)
+            SampleRandom.new rng
+          else
+            ::Kernel
+          end
+
+    return `self[#{rng.rand(`self.length`)}]` unless count
+
+    %x{
+
+      var abandon, spin, result, i, j, k, targetIndex, oldValue;
+
+      if (count > self.length) {
+        count = self.length;
+      }
+
+      switch (count) {
+        case 0:
+          return [];
+          break;
+        case 1:
+          return [self[#{rng.rand(`self.length`)}]];
+          break;
+        case 2:
+          i = #{rng.rand(`self.length`)};
+          j = #{rng.rand(`self.length`)};
+          if (i === j) {
+            j = i === 0 ? i + 1 : i - 1;
+          }
+          return [self[i], self[j]];
+          break;
+        default:
+          if (self.length / count > 3) {
+            abandon = false;
+            spin = 0;
+
+            result = #{ Array.new(count) };
+            i = 1;
+
+            result[0] = #{rng.rand(`self.length`)};
+            while (i < count) {
+              k = #{rng.rand(`self.length`)};
+              j = 0;
+
+              while (j < i) {
+                while (k === result[j]) {
+                  spin++;
+                  if (spin > 100) {
+                    abandon = true;
+                    break;
+                  }
+                  k = #{rng.rand(`self.length`)};
+                }
+                if (abandon) { break; }
+
+                j++;
+              }
+
+              if (abandon) { break; }
+
+              result[i] = k;
+
+              i++;
+            }
+
+            if (!abandon) {
+              i = 0;
+              while (i < count) {
+                result[i] = self[result[i]];
+                i++;
+              }
+
+              return result;
+            }
+          }
+
+          result = self.slice();
+
+          for (var c = 0; c < count; c++) {
+            targetIndex = #{rng.rand(`self.length`)};
+            oldValue = result[c];
+            result[c] = result[targetIndex];
+            result[targetIndex] = oldValue;
+          }
+
+          return count === self.length ? result : #{`result`[0, count]};
+      }
+    }
+  end
+
+  def select(&block)
+    return enum_for(:select) { size } unless block_given?
+
+    %x{
+      var result = [];
+
+      for (var i = 0, length = self.length, item, value; i < length; i++) {
+        item = self[i];
+
+        value = $yield1(block, item);
+
+        if ($truthy(value)) {
+          result.push(item);
+        }
+      }
+
+      return result;
+    }
+  end
+
+  def select!(&block)
+    return enum_for(:select!) { size } unless block_given?
+
+    %x{
+      var original = self.length;
+      #{ keep_if(&block) };
+      return self.length === original ? nil : self;
+    }
+  end
+
+  def shift(count = undefined)
+    if `count === undefined`
+      return if `self.length === 0`
+      return `shiftNoArg(self)`
+    end
+
+    count = `$coerce_to(count, #{::Integer}, 'to_int')`
+
+    if `count < 0`
+      ::Kernel.raise ::ArgumentError, 'negative array size'
+    end
+
+    return [] if `self.length === 0`
+
+    `self.splice(0, count)`
+  end
+
+  def shuffle(rng = undefined)
+    dup.to_a.shuffle!(rng)
+  end
+
+  def shuffle!(rng = undefined)
+    %x{
+      var randgen, i = self.length, j, tmp;
+
+      if (rng !== undefined) {
+        rng = #{::Opal.coerce_to?(rng, ::Hash, :to_hash)};
+
+        if (rng !== nil) {
+          rng = #{rng[:random]};
+
+          if (rng !== nil && #{rng.respond_to?(:rand)}) {
+            randgen = rng;
+          }
+        }
+      }
+
+      while (i) {
+        if (randgen) {
+          j = randgen.$rand(i).$to_int();
+
+          if (j < 0) {
+            #{::Kernel.raise ::RangeError, "random number too small #{`j`}"}
+          }
+
+          if (j >= i) {
+            #{::Kernel.raise ::RangeError, "random number too big #{`j`}"}
+          }
+        }
+        else {
+          j = #{rand(`i`)};
+        }
+
+        tmp = self[--i];
+        self[i] = self[j];
+        self[j] = tmp;
+      }
+
+      return self;
+    }
+  end
+
+  def slice!(index, length = undefined)
+    result = nil
+
+    if `length === undefined`
+      if ::Range === index
+        range = index
+        result = self[range]
+
+        range_start = `range.begin === nil ? 0 : $coerce_to(range.begin, #{::Integer}, 'to_int')`
+        range_end = `range.end === nil ? -1 : $coerce_to(range.end, #{::Integer}, 'to_int')`
+
+        %x{
+          if (range_start < 0) {
+            range_start += self.length;
+          }
+
+          if (range_end < 0) {
+            range_end += self.length;
+          } else if (range_end >= self.length) {
+            range_end = self.length - 1;
+            if (range.excl) {
+              range_end += 1;
+            }
+          }
+
+          var range_length = range_end - range_start;
+          if (range.excl && range.end !== nil) {
+            range_end -= 1;
+          } else {
+            range_length += 1;
+          }
+
+          if (range_start < self.length && range_start >= 0 && range_end < self.length && range_end >= 0 && range_length > 0) {
+            self.splice(range_start, range_length);
+          }
+        }
+      else
+        start = `$coerce_to(index, #{::Integer}, 'to_int')`
+        %x{
+          if (start < 0) {
+            start += self.length;
+          }
+
+          if (start < 0 || start >= self.length) {
+            return nil;
+          }
+
+          result = self[start];
+
+          if (start === 0) {
+            self.shift();
+          } else {
+            self.splice(start, 1);
+          }
+        }
+      end
+    else
+      start = `$coerce_to(index, #{::Integer}, 'to_int')`
+      length = `$coerce_to(length, #{::Integer}, 'to_int')`
+
+      %x{
+        if (length < 0) {
+          return nil;
+        }
+
+        var end = start + length;
+
+        result = #{self[start, length]};
+
+        if (start < 0) {
+          start += self.length;
+        }
+
+        if (start + length > self.length) {
+          length = self.length - start;
+        }
+
+        if (start < self.length && start >= 0) {
+          self.splice(start, length);
+        }
+      }
+    end
+    result
+  end
+
+  def sort(&block)
+    return self unless `self.length > 1`
+
+    %x{
+      if (block === nil) {
+        block = function(a, b) {
+          return #{`a` <=> `b`};
+        };
+      }
+
+      return self.slice().sort(function(x, y) {
+        var ret = block(x, y);
+
+        if (ret === nil) {
+          #{::Kernel.raise ::ArgumentError, "comparison of #{`x`.inspect} with #{`y`.inspect} failed"};
+        }
+
+        return #{`ret` > 0} ? 1 : (#{`ret` < 0} ? -1 : 0);
+      });
+    }
+  end
+
+  def sort!(&block)
+    %x{
+      var result;
+
+      if (#{block_given?}) {
+        result = #{`self.slice()`.sort(&block)};
+      }
+      else {
+        result = #{`self.slice()`.sort};
+      }
+
+      self.length = 0;
+      for(var i = 0, length = result.length; i < length; i++) {
+        self.push(result[i]);
+      }
+
+      return self;
+    }
+  end
+
+  def sort_by!(&block)
+    return enum_for(:sort_by!) { size } unless block_given?
+
+    replace sort_by(&block)
+  end
+
+  def take(count)
+    %x{
+      if (count < 0) {
+        #{::Kernel.raise ::ArgumentError};
+      }
+
+      return self.slice(0, count);
+    }
+  end
+
+  def take_while(&block)
+    %x{
+      var result = [];
+
+      for (var i = 0, length = self.length, item, value; i < length; i++) {
+        item = self[i];
+
+        value = block(item);
+
+        if (value === false || value === nil) {
+          return result;
+        }
+
+        result.push(item);
+      }
+
+      return result;
+    }
+  end
+
+  def to_a
+    %x{
+      if (self.$$class === Opal.Array) {
+        return self;
+      }
+      else {
+        return Opal.Array.$new(self);
+      }
+    }
+  end
+
+  def to_ary
+    self
+  end
+
+  def to_h(&block)
+    array = self
+    array = array.map(&block) if block_given?
+
+    %x{
+      var i, len = array.length, ary, key, val, hash = #{{}};
+
+      for (i = 0; i < len; i++) {
+        ary = #{::Opal.coerce_to?(`array[i]`, ::Array, :to_ary)};
+        if (!ary.$$is_array) {
+          #{::Kernel.raise ::TypeError, "wrong element type #{`ary`.class} at #{`i`} (expected array)"}
+        }
+        if (ary.length !== 2) {
+          #{::Kernel.raise ::ArgumentError, "wrong array length at #{`i`} (expected 2, was #{`ary`.length})"}
+        }
+        key = ary[0];
+        val = ary[1];
+        $hash_put(hash, key, val);
+      }
+
+      return hash;
+    }
+  end
+
+  def transpose
+    return [] if empty?
+
+    result = []
+    max    = nil
+
+    each do |row|
+      row = if ::Array === row
+              row.to_a
+            else
+              `$coerce_to(row, #{::Array}, 'to_ary')`.to_a
+            end
+
+      max ||= `row.length`
+
+      if `row.length` != max
+        ::Kernel.raise ::IndexError, "element size differs (#{`row.length`} should be #{max})"
+      end
+
+      `row.length`.times do |i|
+        entry = (result[i] ||= [])
+        entry << row.at(i)
+      end
+    end
+
+    result
+  end
+
+  def union(*arrays)
+    arrays.reduce(uniq) { |a, b| a | b }
+  end
+
+  def uniq(&block)
+    %x{
+      var hash = #{{}}, i, length, item, key;
+
+      if (block === nil) {
+        for (i = 0, length = self.length; i < length; i++) {
+          item = self[i];
+          if ($hash_get(hash, item) === undefined) {
+            $hash_put(hash, item, item);
+          }
+        }
+      }
+      else {
+        for (i = 0, length = self.length; i < length; i++) {
+          item = self[i];
+          key = $yield1(block, item);
+          if ($hash_get(hash, key) === undefined) {
+            $hash_put(hash, key, item);
+          }
+        }
+      }
+
+      return #{`hash`.values};
+    }
+  end
+
+  def uniq!(&block)
+    %x{
+      var original_length = self.length, hash = #{{}}, i, length, item, key;
+
+      for (i = 0, length = original_length; i < length; i++) {
+        item = self[i];
+        key = (block === nil ? item : $yield1(block, item));
+
+        if ($hash_get(hash, key) === undefined) {
+          $hash_put(hash, key, item);
+          continue;
+        }
+
+        self.splice(i, 1);
+        length--;
+        i--;
+      }
+
+      return self.length === original_length ? nil : self;
+    }
+  end
+
+  def unshift(*objects)
+    %x{
+      var selfLength = self.length
+      var objectsLength = objects.length
+      if (objectsLength == 0) return self;
+      var index = selfLength - objectsLength
+      for (var i = 0; i < objectsLength; i++) {
+        self.push(self[index + i])
+      }
+      var len = selfLength - 1
+      while (len - objectsLength >= 0) {
+        self[len] = self[len - objectsLength]
+        len--
+      }
+      for (var j = 0; j < objectsLength; j++) {
+        self[j] = objects[j]
+      }
+      return self;
+    }
+  end
+
+  def values_at(*args)
+    out = []
+
+    args.each do |elem|
+      if elem.is_a? ::Range
+        finish = `#{elem.end} === nil ? -1 : $coerce_to(#{elem.end}, #{::Integer}, 'to_int')`
+        start = `#{elem.begin} === nil ? 0 : $coerce_to(#{elem.begin}, #{::Integer}, 'to_int')`
+
+        %x{
+          if (start < 0) {
+            start = start + self.length;
+            #{next};
+          }
+        }
+
+        %x{
+          if (finish < 0) {
+            finish = finish + self.length;
+          }
+          if (#{elem.exclude_end?} && #{elem.end} !== nil) {
+            finish--;
+          }
+          if (finish < start) {
+            #{next};
+          }
+        }
+
+        start.upto(finish) { |i| out << at(i) }
+      else
+        i = `$coerce_to(elem, #{::Integer}, 'to_int')`
+        out << at(i)
+      end
+    end
+
+    out
+  end
+
+  def zip(*others, &block)
+    %x{
+      var result = [], size = self.length, part, o, i, j, jj;
+
+      for (j = 0, jj = others.length; j < jj; j++) {
+        o = others[j];
+        if (o.$$is_array) {
+          continue;
+        }
+        if (o.$$is_range || o.$$is_enumerator) {
+          others[j] = o.$take(size);
+          continue;
+        }
+        others[j] = #{(
+          ::Opal.coerce_to?(`o`, ::Array, :to_ary) ||
+          ::Opal.coerce_to!(`o`, ::Enumerator, :to_enum, :each)
+        ).to_a};
+      }
+
+      for (i = 0; i < size; i++) {
+        part = [self[i]];
+
+        for (j = 0, jj = others.length; j < jj; j++) {
+          o = others[j][i];
+
+          if (o == null) {
+            o = nil;
+          }
+
+          part[j + 1] = o;
+        }
+
+        result[i] = part;
+      }
+
+      if (block !== nil) {
+        for (i = 0; i < size; i++) {
+          Opal.yield1(block, result[i]);
+        }
+
+        return nil;
+      }
+
+      return result;
+    }
+  end
+
+  def self.inherited(klass)
+    %x{
+      klass.$$prototype.$to_a = function() {
+        return this.slice(0, this.length);
+      }
+    }
+  end
+
+  def instance_variables
+    super.reject { |ivar| `/^@\d+$/.test(#{ivar})` || ivar == '@length' }
+  end
+
+  def pack(*args)
+    ::Kernel.raise "To use Array#pack, you must first require 'corelib/array/pack'."
+  end
+
+  alias append push
+  alias filter select
+  alias filter! select!
+  alias map collect
+  alias map! collect!
+  alias prepend unshift
+  alias size length
+  alias slice []
+  alias to_s inspect
+
+  ::Opal.pristine singleton_class, :allocate
+  ::Opal.pristine self, :copy_instance_variables, :initialize_dup
+end
diff --git a/opal/corelib/array/pack.rb b/opal/corelib/array/pack.rb
new file mode 100644
index 00000000..b7c3c3d9
--- /dev/null
+++ b/opal/corelib/array/pack.rb
@@ -0,0 +1,453 @@
+# helpers: coerce_to
+
+require 'corelib/pack_unpack/format_string_parser'
+
+class ::Array
+  %x{
+    // Format Parser
+    var eachDirectiveAndCount = Opal.PackUnpack.eachDirectiveAndCount;
+
+    function identityFunction(value) { return value; }
+
+    function utf8BytesToUtf16LEString(bytes) {
+      var str = String.fromCharCode.apply(null, bytes), out = "", i = 0, len = str.length, c, char2, char3;
+      while (i < len) {
+        c = str.charCodeAt(i++);
+        switch (c >> 4) {
+          case 0:
+          case 1:
+          case 2:
+          case 3:
+          case 4:
+          case 5:
+          case 6:
+          case 7:
+            // 0xxxxxxx
+            out += str.charAt(i - 1);
+            break;
+          case 12:
+          case 13:
+            // 110x xxxx 10xx xxxx
+            char2 = str.charCodeAt(i++);
+            out += String.fromCharCode(((c & 0x1F) << 6) | (char2 & 0x3F));
+            break;
+          case 14:
+            // 1110 xxxx10xx xxxx10xx xxxx
+            char2 = str.charCodeAt(i++);
+            char3 = str.charCodeAt(i++);
+            out += String.fromCharCode(((c & 0x0F) << 12) | ((char2 & 0x3F) << 6) | ((char3 & 0x3F) << 0));
+            break;
+        }
+      }
+      return out;
+    }
+
+    function asciiBytesToUtf16LEString(bytes) {
+      return String.fromCharCode.apply(null, bytes);
+    }
+
+    function asciiStringFromUnsignedInt(bytes, callback) {
+      return function(data) {
+        var buffer = callback(data);
+
+        return buffer.map(function(item) {
+          var result = [];
+
+          for (var i = 0; i < bytes; i++) {
+            var bit = item & 255;
+            result.push(bit);
+            item = item >> 8;
+          };
+
+          return asciiBytesToUtf16LEString(result);
+        });
+      }
+    }
+
+    function asciiStringFromSignedInt(bytes, callback) {
+      return function(data) {
+        var buffer = callback(data),
+            bits = bytes * 8,
+            limit = Math.pow(2, bits);
+
+        return buffer.map(function(item) {
+          if (item < 0) {
+            item += limit;
+          }
+
+          var result = [];
+
+          for (var i = 0; i < bytes; i++) {
+            var bit = item & 255;
+            result.push(bit);
+            item = item >> 8;
+          };
+
+          return asciiBytesToUtf16LEString(result);
+        });
+      }
+    }
+
+    function toInt(callback) {
+      return function(data) {
+        var buffer = callback(data);
+
+        return buffer.map(function(item) {
+          return $coerce_to(item, #{::Integer}, 'to_int')
+        });
+      }
+    }
+
+    function ToStr(callback) {
+      return function(data) {
+        var buffer = callback(data);
+
+        return buffer.map(function(item) {
+          return $coerce_to(item, #{::String}, 'to_str')
+        });
+      }
+    }
+
+    function fromCodePoint(callback) {
+      return function(data) {
+        var buffer = callback(data);
+        return buffer.map(function(item) {
+          try {
+            return String.fromCodePoint(item);
+          } catch (error) {
+            if (error instanceof RangeError) {
+              #{::Kernel.raise ::RangeError, 'value out of range'};
+            }
+            throw error;
+          }
+        });
+      }
+    }
+
+    function joinChars(callback) {
+      return function(data) {
+        var buffer = callback(data);
+        return buffer.join('');
+      }
+    }
+
+    var handlers = {
+      // Integer
+      'C': joinChars(asciiStringFromUnsignedInt(1, toInt(identityFunction))),
+      'S': joinChars(asciiStringFromUnsignedInt(2, toInt(identityFunction))),
+      'L': joinChars(asciiStringFromUnsignedInt(4, toInt(identityFunction))),
+      'Q': joinChars(asciiStringFromUnsignedInt(8, toInt(identityFunction))),
+      'J': null,
+
+      'S>': null,
+      'L>': null,
+      'Q>': null,
+
+      'c': joinChars(asciiStringFromSignedInt(1, toInt(identityFunction))),
+      's': joinChars(asciiStringFromSignedInt(2, toInt(identityFunction))),
+      'l': joinChars(asciiStringFromSignedInt(4, toInt(identityFunction))),
+      'q': joinChars(asciiStringFromSignedInt(8, toInt(identityFunction))),
+      'j': null,
+
+      's>': null,
+      'l>': null,
+      'q>': null,
+
+      'n': null,
+      'N': null,
+      'v': null,
+      'V': null,
+
+      'U': joinChars(fromCodePoint(toInt(identityFunction))),
+      'w': null,
+
+      // Float
+      'D': null,
+      'd': null,
+      'F': null,
+      'f': null,
+      'E': null,
+      'e': null,
+      'G': null,
+      'g': null,
+
+      // String
+      'A': joinChars(identityFunction),
+      'a': joinChars(identityFunction),
+      'Z': null,
+      'B': null,
+      'b': null,
+      'H': null,
+      'h': null,
+      'u': null,
+      'M': null,
+      'm': null,
+
+      'P': null,
+      'p': null
+    };
+
+    function readNTimesFromBufferAndMerge(callback) {
+      return function(buffer, count) {
+        var chunk = [], chunkData;
+
+        if (count === Infinity) {
+          while (buffer.length > 0) {
+            chunkData = callback(buffer);
+            buffer = chunkData.rest;
+            chunk = chunk.concat(chunkData.chunk);
+          }
+        } else {
+          if (buffer.length < count) {
+            #{::Kernel.raise ::ArgumentError, 'too few arguments'};
+          }
+          for (var i = 0; i < count; i++) {
+            chunkData = callback(buffer);
+            buffer = chunkData.rest;
+            chunk = chunk.concat(chunkData.chunk);
+          }
+        }
+
+        return { chunk: chunk, rest: buffer };
+      }
+    }
+
+    function readItem(buffer) {
+      var chunk = buffer.slice(0, 1);
+      buffer = buffer.slice(1, buffer.length);
+      return { chunk: chunk, rest: buffer };
+    }
+
+    function readNCharsFromTheFirstItemAndMergeWithFallback(fallback, callback) {
+      return function(buffer, count) {
+        var chunk = [], source = buffer[0];
+
+        if (source === nil) {
+          source = '';
+        } else if (source === undefined) {
+          #{::Kernel.raise ::ArgumentError, 'too few arguments'};
+        } else {
+          source = $coerce_to(source, #{::String}, 'to_str');
+        }
+
+        buffer = buffer.slice(1, buffer.length);
+
+        function infiniteReeder() {
+          var chunkData = callback(source);
+          source = chunkData.rest;
+          var subChunk = chunkData.chunk;
+
+          if (subChunk.length === 1 && subChunk[0] === nil) {
+            subChunk = []
+          }
+
+          chunk = chunk.concat(subChunk);
+        }
+
+        function finiteReeder() {
+          var chunkData = callback(source);
+          source = chunkData.rest;
+          var subChunk = chunkData.chunk;
+
+          if (subChunk.length === 0) {
+            subChunk = [fallback];
+          }
+
+          if (subChunk.length === 1 && subChunk[0] === nil) {
+            subChunk = [fallback];
+          }
+
+          chunk = chunk.concat(subChunk);
+        }
+
+        if (count === Infinity) {
+          while (source.length > 0) {
+            infiniteReeder();
+          }
+        } else {
+          for (var i = 0; i < count; i++) {
+            finiteReeder();
+          }
+        }
+
+        return { chunk: chunk, rest: buffer };
+      }
+    }
+
+    var readChunk = {
+      // Integer
+      'C': readNTimesFromBufferAndMerge(readItem),
+      'S': readNTimesFromBufferAndMerge(readItem),
+      'L': readNTimesFromBufferAndMerge(readItem),
+      'Q': readNTimesFromBufferAndMerge(readItem),
+      'J': null,
+
+      'S>': null,
+      'L>': null,
+      'Q>': null,
+
+      'c': readNTimesFromBufferAndMerge(readItem),
+      's': readNTimesFromBufferAndMerge(readItem),
+      'l': readNTimesFromBufferAndMerge(readItem),
+      'q': readNTimesFromBufferAndMerge(readItem),
+      'j': null,
+
+      's>': null,
+      'l>': null,
+      'q>': null,
+
+      'n': null,
+      'N': null,
+      'v': null,
+      'V': null,
+
+      'U': readNTimesFromBufferAndMerge(readItem),
+      'w': null,
+
+      // Float
+      'D': null,
+      'd': null,
+      'F': null,
+      'f': null,
+      'E': null,
+      'e': null,
+      'G': null,
+      'g': null,
+
+      // String
+      'A': readNCharsFromTheFirstItemAndMergeWithFallback(" ", readItem),
+      'a': readNCharsFromTheFirstItemAndMergeWithFallback("\x00", readItem),
+      'Z': null,
+      'B': null,
+      'b': null,
+      'H': null,
+      'h': null,
+      'u': null,
+      'M': null,
+      'm': null,
+
+      'P': null,
+      'p': null
+    };
+
+    var autocompletion = {
+      // Integer
+      'C': false,
+      'S': false,
+      'L': false,
+      'Q': false,
+      'J': null,
+
+      'S>': null,
+      'L>': null,
+      'Q>': null,
+
+      'c': false,
+      's': false,
+      'l': false,
+      'q': false,
+      'j': null,
+
+      's>': null,
+      'l>': null,
+      'q>': null,
+
+      'n': null,
+      'N': null,
+      'v': null,
+      'V': null,
+
+      'U': false,
+      'w': null,
+
+      // Float
+      'D': null,
+      'd': null,
+      'F': null,
+      'f': null,
+      'E': null,
+      'e': null,
+      'G': null,
+      'g': null,
+
+      // String
+      'A': false,
+      'a': false,
+      'Z': null,
+      'B': null,
+      'b': null,
+      'H': null,
+      'h': null,
+      'u': false,
+      'M': null,
+      'm': null,
+
+      'P': null,
+      'p': null
+    };
+  }
+
+  def pack(format)
+    format = ::Opal.coerce_to!(format, ::String, :to_str).gsub(/\s/, '').delete("\000")
+
+    %x{
+      var output = '';
+
+      var buffer = self.slice();
+
+      function autocomplete(array, size) {
+        while (array.length < size) {
+          array.push(nil);
+        }
+
+        return array;
+      }
+
+      function processChunk(directive, count) {
+        var chunk,
+            chunkReader = readChunk[directive];
+
+        if (chunkReader == null) {
+          #{::Kernel.raise "Unsupported pack directive #{`directive`.inspect} (no chunk reader defined)"}
+        }
+
+        var chunkData = chunkReader(buffer, count);
+        chunk = chunkData.chunk;
+        buffer = chunkData.rest;
+
+        var handler = handlers[directive];
+
+        if (handler == null) {
+          #{::Kernel.raise "Unsupported pack directive #{`directive`.inspect} (no handler defined)"}
+        }
+
+        return handler(chunk);
+      }
+
+      eachDirectiveAndCount(format, function(directive, count) {
+        var part = processChunk(directive, count);
+
+        if (count !== Infinity) {
+          var shouldAutocomplete = autocompletion[directive]
+
+          if (shouldAutocomplete == null) {
+            #{::Kernel.raise "Unsupported pack directive #{`directive`.inspect} (no autocompletion rule defined)"}
+          }
+
+          if (shouldAutocomplete) {
+            autocomplete(part, count);
+          }
+        }
+
+        output = output.concat(part);
+      });
+
+      if (format.match(/^(U\*?)+$/)) {
+        return output;
+      }
+      else {
+        return Opal.enc(output, "binary");
+      }
+    }
+  end
+end
diff --git a/opal/corelib/basic_object.rb b/opal/corelib/basic_object.rb
new file mode 100644
index 00000000..420e1e13
--- /dev/null
+++ b/opal/corelib/basic_object.rb
@@ -0,0 +1,154 @@
+# use_strict: true
+
+class ::BasicObject
+  def initialize(*)
+  end
+
+  def ==(other)
+    `self === other`
+  end
+
+  def eql?(other)
+    self == other
+  end
+
+  alias equal? ==
+
+  def __id__
+    %x{
+      if (self.$$id != null) {
+        return self.$$id;
+      }
+      Opal.prop(self, '$$id', Opal.uid());
+      return self.$$id;
+    }
+  end
+
+  def __send__(symbol, *args, &block)
+    %x{
+      if (!symbol.$$is_string) {
+        #{raise ::TypeError, "#{inspect} is not a symbol nor a string"}
+      }
+
+      var func = self['$' + symbol];
+
+      if (func) {
+        if (block !== nil) {
+          func.$$p = block;
+        }
+
+        return func.apply(self, args);
+      }
+
+      if (block !== nil) {
+        self.$method_missing.$$p = block;
+      }
+
+      return self.$method_missing.apply(self, [symbol].concat(args));
+    }
+  end
+
+  def !
+    false
+  end
+
+  def !=(other)
+    !(self == other)
+  end
+
+  def instance_eval(*args, &block)
+    if block.nil? && `!!Opal.compile`
+      ::Kernel.raise ::ArgumentError, 'wrong number of arguments (0 for 1..3)' unless (1..3).cover? args.size
+
+      string, file, _lineno = *args
+      default_eval_options = { file: (file || '(eval)'), eval: true }
+      compiling_options = __OPAL_COMPILER_CONFIG__.merge(default_eval_options)
+      compiled = ::Opal.compile string, compiling_options
+      block = ::Kernel.proc do
+        %x{new Function("Opal,self", "return " + compiled)(Opal, self)}
+      end
+    elsif block.nil? && args.length >= 1 && args.first[0] == '@'
+      # get instance variable
+      return instance_variable_get(args.first)
+    elsif args.any?
+      ::Kernel.raise ::ArgumentError, "wrong number of arguments (#{args.size} for 0)"
+    end
+
+    %x{
+      var old = block.$$s,
+          result;
+
+      block.$$s = null;
+
+      // Need to pass $$eval so that method definitions know if this is
+      // being done on a class/module. Cannot be compiler driven since
+      // send(:instance_eval) needs to work.
+      if (self.$$is_a_module) {
+        self.$$eval = true;
+        try {
+          result = block.call(self, self);
+        }
+        finally {
+          self.$$eval = false;
+        }
+      }
+      else {
+        result = block.call(self, self);
+      }
+
+      block.$$s = old;
+
+      return result;
+    }
+  end
+
+  def instance_exec(*args, &block)
+    ::Kernel.raise ::ArgumentError, 'no block given' unless block
+
+    %x{
+      var block_self = block.$$s,
+          result;
+
+      block.$$s = null;
+
+      if (self.$$is_a_module) {
+        self.$$eval = true;
+        try {
+          result = block.apply(self, args);
+        }
+        finally {
+          self.$$eval = false;
+        }
+      }
+      else {
+        result = block.apply(self, args);
+      }
+
+      block.$$s = block_self;
+
+      return result;
+    }
+  end
+
+  def singleton_method_added(*)
+  end
+
+  def singleton_method_removed(*)
+  end
+
+  def singleton_method_undefined(*)
+  end
+
+  def method_missing(symbol, *args, &block)
+    inspect_result = ::Opal.inspect(self)
+    ::Kernel.raise ::NoMethodError.new(
+      "undefined method `#{symbol}' for #{inspect_result}", symbol, args
+    ), nil, ::Kernel.caller(1)
+  end
+
+  ::Opal.pristine(self, :method_missing)
+
+  def respond_to_missing?(method_name, include_all = false)
+    false
+  end
+end
diff --git a/opal/corelib/binding.rb b/opal/corelib/binding.rb
new file mode 100644
index 00000000..257f5522
--- /dev/null
+++ b/opal/corelib/binding.rb
@@ -0,0 +1,50 @@
+class ::Binding
+  # @private
+  def initialize(jseval, scope_variables, receiver, source_location)
+    @jseval, @scope_variables, @receiver, @source_location = \
+      jseval, scope_variables, receiver, source_location
+  end
+
+  def js_eval(*args)
+    if @jseval
+      @jseval.call(*args)
+    else
+      ::Kernel.raise 'Evaluation on a Proc#binding is not supported'
+    end
+  end
+
+  def local_variable_get(symbol)
+    js_eval(symbol)
+  rescue ::Exception
+    ::Kernel.raise ::NameError, "local variable `#{symbol}' is not defined for #{inspect}"
+  end
+
+  def local_variable_set(symbol, value)
+    js_eval(symbol, value)
+  end
+
+  def local_variables
+    @scope_variables
+  end
+
+  def local_variable_defined?(value)
+    @scope_variables.include?(value)
+  end
+
+  def eval(str, file = nil, line = nil)
+    return receiver if str == 'self'
+
+    ::Kernel.eval(str, self, file, line)
+  end
+
+  attr_reader :receiver, :source_location
+end
+
+module ::Kernel
+  def binding
+    ::Kernel.raise "Opal doesn't support dynamic calls to binding"
+  end
+end
+
+TOPLEVEL_BINDING = binding
+`#{TOPLEVEL_BINDING}.source_location = ["<main>", 0]`
diff --git a/opal/corelib/boolean.rb b/opal/corelib/boolean.rb
new file mode 100644
index 00000000..b161a8cf
--- /dev/null
+++ b/opal/corelib/boolean.rb
@@ -0,0 +1,110 @@
+# use_strict: true
+
+class ::Boolean < `Boolean`
+  `Opal.prop(self.$$prototype, '$$is_boolean', true)`
+
+  %x{
+    var properties = ['$$class', '$$meta'];
+
+    for (var i = 0; i < properties.length; i++) {
+      Object.defineProperty(self.$$prototype, properties[i], {
+        configurable: true,
+        enumerable: false,
+        get: function() {
+          return this == true  ? Opal.TrueClass :
+                 this == false ? Opal.FalseClass :
+                                 Opal.Boolean;
+        }
+      });
+    }
+
+    Object.defineProperty(self.$$prototype, "$$id", {
+      configurable: true,
+      enumerable: false,
+      get: function() {
+        return this == true  ? 2 :
+               this == false ? 0 :
+                               nil;
+      }
+    });
+  }
+
+  class << self
+    def allocate
+      ::Kernel.raise ::TypeError, "allocator undefined for #{name}"
+    end
+
+    undef :new
+  end
+
+  def __id__
+    `self.valueOf() ? 2 : 0`
+  end
+
+  def !
+    `self != true`
+  end
+
+  def &(other)
+    `(self == true) ? (other !== false && other !== nil) : false`
+  end
+
+  def |(other)
+    `(self == true) ? true : (other !== false && other !== nil)`
+  end
+
+  def ^(other)
+    `(self == true) ? (other === false || other === nil) : (other !== false && other !== nil)`
+  end
+
+  def ==(other)
+    `(self == true) === other.valueOf()`
+  end
+
+  def singleton_class
+    `self.$$meta`
+  end
+
+  def to_s
+    `(self == true) ? 'true' : 'false'`
+  end
+
+  def dup
+    self
+  end
+
+  def clone(freeze: true)
+    self
+  end
+
+  # See: https://github.com/opal/opal/issues/2230
+  #
+  # This is a hack that allows you to add methods to TrueClass and FalseClass.
+  # Do note, that while true and false have a correct $$class (it's either
+  # TrueClass or FalseClass), their prototype is `Boolean.$$prototype`, which
+  # basically means that when calling `true.something` we actually call
+  # `Boolean#something` instead of `TrueClass#something`. So using
+  # method_missing we dispatch it to `TrueClass/FalseClass#something` correctly.
+  #
+  # The downside is that a correct implementation would also allow us to override
+  # the methods defined on Boolean, but our implementation doesn't allow that,
+  # unless you define them on Boolean and not on TrueClass/FalseClass.
+  def method_missing(method, *args, &block)
+    `var body = self.$$class.$$prototype['$' + #{method}]`
+    super unless `typeof body !== 'undefined' && !body.$$stub`
+    `Opal.send(self, body, #{args}, #{block})`
+  end
+
+  def respond_to_missing?(method, _include_all = false)
+    `var body = self.$$class.$$prototype['$' + #{method}]`
+    `typeof body !== 'undefined' && !body.$$stub`
+  end
+
+  alias eql? ==
+  alias equal? ==
+  alias inspect to_s
+  alias object_id __id__
+end
+
+class ::TrueClass < ::Boolean; end
+class ::FalseClass < ::Boolean; end
diff --git a/opal/corelib/class.rb b/opal/corelib/class.rb
new file mode 100644
index 00000000..4d71faf2
--- /dev/null
+++ b/opal/corelib/class.rb
@@ -0,0 +1,87 @@
+require 'corelib/module'
+
+class ::Class
+  def self.new(superclass = Object, &block)
+    %x{
+      if (!superclass.$$is_class) {
+        throw Opal.TypeError.$new("superclass must be a Class");
+      }
+
+      var klass = Opal.allocate_class(nil, superclass);
+      superclass.$inherited(klass);
+      #{`klass`.class_eval(&block) if block_given?}
+      return klass;
+    }
+  end
+
+  def allocate
+    %x{
+      var obj = new self.$$constructor();
+      obj.$$id = Opal.uid();
+      return obj;
+    }
+  end
+
+  def descendants
+    subclasses + subclasses.map(&:descendants).flatten
+  end
+
+  def inherited(cls)
+  end
+
+  def initialize_dup(original)
+    initialize_copy(original)
+    %x{
+      self.$$name = null;
+      self.$$full_name = null;
+    }
+  end
+
+  def new(*args, &block)
+    %x{
+      var object = #{allocate};
+      Opal.send(object, object.$initialize, args, block);
+      return object;
+    }
+  end
+
+  def subclasses
+    %x{
+      if (typeof WeakRef !== 'undefined') {
+        var i, subclass, out = [];
+        for (i = 0; i < self.$$subclasses.length; i++) {
+          subclass = self.$$subclasses[i].deref();
+          if (subclass !== undefined) {
+            out.push(subclass);
+          }
+        }
+        return out;
+      }
+      else {
+        return self.$$subclasses;
+      }
+    }
+  end
+
+  def superclass
+    `self.$$super || nil`
+  end
+
+  def to_s
+    %x{
+      var singleton_of = self.$$singleton_of;
+
+      if (singleton_of && singleton_of.$$is_a_module) {
+        return #{"#<Class:#{`singleton_of`.name}>"};
+      }
+      else if (singleton_of) {
+        // a singleton class created from an object
+        return #{"#<Class:#<#{`singleton_of.$$class`.name}:0x#{`Opal.id(singleton_of)`.to_s(16)}>>"};
+      }
+
+      return #{super()};
+    }
+  end
+
+  alias inspect to_s
+end
diff --git a/opal/corelib/comparable.rb b/opal/corelib/comparable.rb
new file mode 100644
index 00000000..fdb332d9
--- /dev/null
+++ b/opal/corelib/comparable.rb
@@ -0,0 +1,116 @@
+# helpers: truthy
+
+module ::Comparable
+  %x{
+    function normalize(what) {
+      if (Opal.is_a(what, Opal.Integer)) { return what; }
+
+      if (#{`what` > 0}) { return 1; }
+      if (#{`what` < 0}) { return -1; }
+      return 0;
+    }
+
+    function fail_comparison(lhs, rhs) {
+      var class_name;
+      #{
+        case `rhs`
+        when nil, true, false, ::Integer, ::Float
+          `class_name = rhs.$inspect()`
+        else
+          `class_name = rhs.$$class`
+        end
+      }
+      #{::Kernel.raise ::ArgumentError, "comparison of #{`lhs`.class} with #{`class_name`} failed"}
+    }
+
+    function cmp_or_fail(lhs, rhs) {
+      var cmp = #{`lhs` <=> `rhs`};
+      if (!$truthy(cmp)) fail_comparison(lhs, rhs);
+      return normalize(cmp);
+    }
+  }
+
+  def ==(other)
+    return true if equal?(other)
+
+    %x{
+      if (self["$<=>"] == Opal.Kernel["$<=>"]) {
+        return false;
+      }
+
+      // check for infinite recursion
+      if (self.$$comparable) {
+        delete self.$$comparable;
+        return false;
+      }
+    }
+
+    return false unless cmp = (self <=> other)
+
+    `normalize(cmp) == 0`
+  end
+
+  def >(other)
+    `cmp_or_fail(self, other) > 0`
+  end
+
+  def >=(other)
+    `cmp_or_fail(self, other) >= 0`
+  end
+
+  def <(other)
+    `cmp_or_fail(self, other) < 0`
+  end
+
+  def <=(other)
+    `cmp_or_fail(self, other) <= 0`
+  end
+
+  def between?(min, max)
+    return false if self < min
+    return false if self > max
+    true
+  end
+
+  def clamp(min, max = nil)
+    %x{
+      var c, excl;
+
+      if (max === nil) {
+        // We are dealing with a new Ruby 2.7 behaviour that we are able to
+        // provide a single Range argument instead of 2 Comparables.
+
+        if (!Opal.is_a(min, Opal.Range)) {
+          #{::Kernel.raise ::TypeError, "wrong argument type #{min.class} (expected Range)"}
+        }
+
+        excl = min.excl;
+        max = min.end;
+        min = min.begin;
+
+        if (max !== nil && excl) {
+          #{::Kernel.raise ::ArgumentError, 'cannot clamp with an exclusive range'}
+        }
+      }
+
+      if (min !== nil && max !== nil && cmp_or_fail(min, max) > 0) {
+        #{::Kernel.raise ::ArgumentError, 'min argument must be smaller than max argument'}
+      }
+
+      if (min !== nil) {
+        c = cmp_or_fail(self, min);
+
+        if (c == 0) return self;
+        if (c < 0) return min;
+      }
+
+      if (max !== nil) {
+        c = cmp_or_fail(self, max);
+
+        if (c > 0) return max;
+      }
+
+      return self;
+    }
+  end
+end
diff --git a/opal/corelib/complex.rb b/opal/corelib/complex.rb
new file mode 100644
index 00000000..c4574a2d
--- /dev/null
+++ b/opal/corelib/complex.rb
@@ -0,0 +1,364 @@
+require 'corelib/numeric'
+require 'corelib/complex/base'
+
+class ::Complex < ::Numeric
+  def self.rect(real, imag = 0)
+    unless ::Numeric === real && real.real? && ::Numeric === imag && imag.real?
+      ::Kernel.raise ::TypeError, 'not a real'
+    end
+
+    new(real, imag)
+  end
+
+  def self.polar(r, theta = 0)
+    unless ::Numeric === r && r.real? && ::Numeric === theta && theta.real?
+      ::Kernel.raise ::TypeError, 'not a real'
+    end
+
+    new(r * ::Math.cos(theta), r * ::Math.sin(theta))
+  end
+
+  attr_reader :real, :imag
+
+  def initialize(real, imag = 0)
+    @real = real
+    @imag = imag
+  end
+
+  def coerce(other)
+    if ::Complex === other
+      [other, self]
+    elsif ::Numeric === other && other.real?
+      [::Complex.new(other, 0), self]
+    else
+      ::Kernel.raise ::TypeError, "#{other.class} can't be coerced into Complex"
+    end
+  end
+
+  def ==(other)
+    if ::Complex === other
+      @real == other.real && @imag == other.imag
+    elsif ::Numeric === other && other.real?
+      @real == other && @imag == 0
+    else
+      other == self
+    end
+  end
+
+  def -@
+    ::Kernel.Complex(-@real, -@imag)
+  end
+
+  def +(other)
+    if ::Complex === other
+      ::Kernel.Complex(@real + other.real, @imag + other.imag)
+    elsif ::Numeric === other && other.real?
+      ::Kernel.Complex(@real + other, @imag)
+    else
+      __coerced__ :+, other
+    end
+  end
+
+  def -(other)
+    if ::Complex === other
+      ::Kernel.Complex(@real - other.real, @imag - other.imag)
+    elsif ::Numeric === other && other.real?
+      ::Kernel.Complex(@real - other, @imag)
+    else
+      __coerced__ :-, other
+    end
+  end
+
+  def *(other)
+    if ::Complex === other
+      ::Kernel.Complex(@real * other.real - @imag * other.imag,
+        @real * other.imag + @imag * other.real,
+      )
+    elsif ::Numeric === other && other.real?
+      ::Kernel.Complex(@real * other, @imag * other)
+    else
+      __coerced__ :*, other
+    end
+  end
+
+  def /(other)
+    if ::Complex === other
+      if (::Number === @real && @real.nan?) || (::Number === @imag && @imag.nan?) ||
+         (::Number === other.real && other.real.nan?) || (::Number === other.imag && other.imag.nan?)
+        ::Complex.new(::Float::NAN, ::Float::NAN)
+      else
+        self * other.conj / other.abs2
+      end
+    elsif ::Numeric === other && other.real?
+      ::Kernel.Complex(@real.quo(other), @imag.quo(other))
+    else
+      __coerced__ :/, other
+    end
+  end
+
+  def **(other)
+    if other == 0
+      return ::Complex.new(1, 0)
+    end
+
+    if ::Complex === other
+      r, theta = polar
+      ore      = other.real
+      oim      = other.imag
+      nr       = ::Math.exp(ore * ::Math.log(r) - oim * theta)
+      ntheta   = theta * ore + oim * ::Math.log(r)
+
+      ::Complex.polar(nr, ntheta)
+    elsif ::Integer === other
+      if other > 0
+        x = self
+        z = x
+        n = other - 1
+
+        while n != 0
+          div, mod = n.divmod(2)
+          while mod == 0
+            x = ::Kernel.Complex(x.real * x.real - x.imag * x.imag, 2 * x.real * x.imag)
+            n = div
+            div, mod = n.divmod(2)
+          end
+
+          z *= x
+          n -= 1
+        end
+
+        z
+      else
+        (::Rational.new(1, 1) / self)**-other
+      end
+    elsif ::Float === other || ::Rational === other
+      r, theta = polar
+
+      ::Complex.polar(r**other, theta * other)
+    else
+      __coerced__ :**, other
+    end
+  end
+
+  def abs
+    ::Math.hypot(@real, @imag)
+  end
+
+  def abs2
+    @real * @real + @imag * @imag
+  end
+
+  def angle
+    ::Math.atan2(@imag, @real)
+  end
+
+  def conj
+    ::Kernel.Complex(@real, -@imag)
+  end
+
+  def denominator
+    @real.denominator.lcm(@imag.denominator)
+  end
+
+  def eql?(other)
+    Complex === other && @real.class == @imag.class && self == other
+  end
+
+  def fdiv(other)
+    unless ::Numeric === other
+      ::Kernel.raise ::TypeError, "#{other.class} can't be coerced into Complex"
+    end
+
+    self / other
+  end
+
+  def finite?
+    @real.finite? && @imag.finite?
+  end
+
+  def hash
+    "Complex:#{@real}:#{@imag}"
+  end
+
+  def infinite?
+    @real.infinite? || @imag.infinite?
+  end
+
+  def inspect
+    "(#{self})"
+  end
+
+  def numerator
+    d = denominator
+
+    ::Kernel.Complex(@real.numerator * (d / @real.denominator),
+      @imag.numerator * (d / @imag.denominator),
+    )
+  end
+
+  def polar
+    [abs, arg]
+  end
+
+  def rationalize(eps = undefined)
+    %x{
+      if (arguments.length > 1) {
+        #{::Kernel.raise ::ArgumentError, "wrong number of arguments (#{`arguments.length`} for 0..1)"};
+      }
+    }
+
+    if @imag != 0
+      ::Kernel.raise ::RangeError, "can't convert #{self} into Rational"
+    end
+
+    real.rationalize(eps)
+  end
+
+  def real?
+    false
+  end
+
+  def rect
+    [@real, @imag]
+  end
+
+  def to_f
+    unless @imag == 0
+      ::Kernel.raise ::RangeError, "can't convert #{self} into Float"
+    end
+
+    @real.to_f
+  end
+
+  def to_i
+    unless @imag == 0
+      ::Kernel.raise ::RangeError, "can't convert #{self} into Integer"
+    end
+
+    @real.to_i
+  end
+
+  def to_r
+    unless @imag == 0
+      ::Kernel.raise ::RangeError, "can't convert #{self} into Rational"
+    end
+
+    @real.to_r
+  end
+
+  def to_s
+    result = @real.inspect
+
+    result +=
+      if (::Number === @imag && @imag.nan?) || @imag.positive? || @imag.zero?
+        '+'
+      else
+        '-'
+      end
+
+    result += @imag.abs.inspect
+
+    if ::Number === @imag && (@imag.nan? || @imag.infinite?)
+      result += '*'
+    end
+
+    result + 'i'
+  end
+
+  I = new(0, 1)
+
+  def self.from_string(str)
+    %x{
+      var re = /[+-]?[\d_]+(\.[\d_]+)?(e\d+)?/,
+          match = str.match(re),
+          real, imag, denominator;
+
+      function isFloat() {
+        return re.test(str);
+      }
+
+      function cutFloat() {
+        var match = str.match(re);
+        var number = match[0];
+        str = str.slice(number.length);
+        return number.replace(/_/g, '');
+      }
+
+      // handles both floats and rationals
+      function cutNumber() {
+        if (isFloat()) {
+          var numerator = parseFloat(cutFloat());
+
+          if (str[0] === '/') {
+            // rational real part
+            str = str.slice(1);
+
+            if (isFloat()) {
+              var denominator = parseFloat(cutFloat());
+              return #{::Kernel.Rational(`numerator`, `denominator`)};
+            } else {
+              // reverting '/'
+              str = '/' + str;
+              return numerator;
+            }
+          } else {
+            // float real part, no denominator
+            return numerator;
+          }
+        } else {
+          return null;
+        }
+      }
+
+      real = cutNumber();
+
+      if (!real) {
+        if (str[0] === 'i') {
+          // i => Complex(0, 1)
+          return #{::Kernel.Complex(0, 1)};
+        }
+        if (str[0] === '-' && str[1] === 'i') {
+          // -i => Complex(0, -1)
+          return #{::Kernel.Complex(0, -1)};
+        }
+        if (str[0] === '+' && str[1] === 'i') {
+          // +i => Complex(0, 1)
+          return #{::Kernel.Complex(0, 1)};
+        }
+        // anything => Complex(0, 0)
+        return #{::Kernel.Complex(0, 0)};
+      }
+
+      imag = cutNumber();
+      if (!imag) {
+        if (str[0] === 'i') {
+          // 3i => Complex(0, 3)
+          return #{::Kernel.Complex(0, `real`)};
+        } else {
+          // 3 => Complex(3, 0)
+          return #{::Kernel.Complex(`real`, 0)};
+        }
+      } else {
+        // 3+2i => Complex(3, 2)
+        return #{::Kernel.Complex(`real`, `imag`)};
+      }
+    }
+  end
+
+  class << self
+    alias rectangular rect
+  end
+
+  alias arg angle
+  alias conjugate conj
+  alias divide /
+  alias imaginary imag
+  alias magnitude abs
+  alias phase arg
+  alias quo /
+  alias rectangular rect
+
+  undef negative?
+  undef positive?
+  undef step
+end
diff --git a/opal/corelib/complex/base.rb b/opal/corelib/complex/base.rb
new file mode 100644
index 00000000..bf17f2dc
--- /dev/null
+++ b/opal/corelib/complex/base.rb
@@ -0,0 +1,15 @@
+module ::Kernel
+  def Complex(real, imag = nil)
+    if imag
+      Complex.new(real, imag)
+    else
+      Complex.new(real, 0)
+    end
+  end
+end
+
+class ::String
+  def to_c
+    Complex.from_string(self)
+  end
+end
diff --git a/opal/corelib/constants.rb b/opal/corelib/constants.rb
new file mode 100644
index 00000000..cbc48bd0
--- /dev/null
+++ b/opal/corelib/constants.rb
@@ -0,0 +1,9 @@
+::RUBY_PLATFORM       = 'opal'
+::RUBY_ENGINE         = 'opal'
+::RUBY_VERSION        = '3.1.0'
+::RUBY_ENGINE_VERSION = '1.5.0.dev'
+::RUBY_RELEASE_DATE   = '2022-03-23'
+::RUBY_PATCHLEVEL     = 0
+::RUBY_REVISION       = '0'
+::RUBY_COPYRIGHT      = 'opal - Copyright (C) 2013-2021 Adam Beynon and the Opal contributors'
+::RUBY_DESCRIPTION    = "opal #{::RUBY_ENGINE_VERSION} (#{::RUBY_RELEASE_DATE} revision #{::RUBY_REVISION})"
diff --git a/opal/corelib/dir.rb b/opal/corelib/dir.rb
new file mode 100644
index 00000000..b56e19a9
--- /dev/null
+++ b/opal/corelib/dir.rb
@@ -0,0 +1,21 @@
+class ::Dir
+  class << self
+    def chdir(dir)
+      prev_cwd = `Opal.current_dir`
+      `Opal.current_dir = #{dir}`
+      yield
+    ensure
+      `Opal.current_dir = #{prev_cwd}`
+    end
+
+    def pwd
+      `Opal.current_dir || '.'`
+    end
+
+    def home
+      ::ENV['HOME'] || '.'
+    end
+
+    alias getwd pwd
+  end
+end
diff --git a/opal/corelib/enumerable.rb b/opal/corelib/enumerable.rb
new file mode 100644
index 00000000..63b6bb6c
--- /dev/null
+++ b/opal/corelib/enumerable.rb
@@ -0,0 +1,1281 @@
+# helpers: truthy, coerce_to, yield1, yieldX
+
+module ::Enumerable
+  %x{
+    function comparableForPattern(value) {
+      if (value.length === 0) {
+        value = [nil];
+      }
+
+      if (value.length > 1) {
+        value = [value];
+      }
+
+      return value;
+    }
+  }
+
+  def all?(pattern = undefined, &block)
+    if `pattern !== undefined`
+      each do |*value|
+        comparable = `comparableForPattern(value)`
+
+        return false unless pattern.public_send(:===, *comparable)
+      end
+    elsif block_given?
+      each do |*value|
+        unless yield(*value)
+          return false
+        end
+      end
+    else
+      each do |*value|
+        unless ::Opal.destructure(value)
+          return false
+        end
+      end
+    end
+
+    true
+  end
+
+  def any?(pattern = undefined, &block)
+    if `pattern !== undefined`
+      each do |*value|
+        comparable = `comparableForPattern(value)`
+
+        return true if pattern.public_send(:===, *comparable)
+      end
+    elsif block_given?
+      each do |*value|
+        if yield(*value)
+          return true
+        end
+      end
+    else
+      each do |*value|
+        if ::Opal.destructure(value)
+          return true
+        end
+      end
+    end
+
+    false
+  end
+
+  def chunk(&block)
+    return to_enum(:chunk) { enumerator_size } unless block_given?
+
+    ::Enumerator.new do |yielder|
+      %x{
+        var previous = nil, accumulate = [];
+
+        function releaseAccumulate() {
+          if (accumulate.length > 0) {
+            #{yielder.yield(`previous`, `accumulate`)}
+          }
+        }
+
+        self.$each.$$p = function(value) {
+          var key = $yield1(block, value);
+
+          if (key === nil) {
+            releaseAccumulate();
+            accumulate = [];
+            previous = nil;
+          } else {
+            if (previous === nil || previous === key) {
+              accumulate.push(value);
+            } else {
+              releaseAccumulate();
+              accumulate = [value];
+            }
+
+            previous = key;
+          }
+        }
+
+        self.$each();
+
+        releaseAccumulate();
+      }
+    end
+  end
+
+  def chunk_while(&block)
+    ::Kernel.raise ::ArgumentError, 'no block given' unless block_given?
+
+    slice_when { |before, after| !(yield before, after) }
+  end
+
+  def collect(&block)
+    return enum_for(:collect) { enumerator_size } unless block_given?
+
+    %x{
+      var result = [];
+
+      self.$each.$$p = function() {
+        var value = $yieldX(block, arguments);
+
+        result.push(value);
+      };
+
+      self.$each();
+
+      return result;
+    }
+  end
+
+  def collect_concat(&block)
+    return enum_for(:collect_concat) { enumerator_size } unless block_given?
+    map { |item| yield item }.flatten(1)
+  end
+
+  def compact
+    to_a.compact
+  end
+
+  def count(object = undefined, &block)
+    result = 0
+
+    %x{
+      if (object != null && block !== nil) {
+        #{warn('warning: given block not used')}
+      }
+    }
+
+    if `object != null`
+      block = ::Kernel.proc do |*args|
+        ::Opal.destructure(args) == object
+      end
+    elsif block.nil?
+      block = ::Kernel.proc { true }
+    end
+
+    each do |*args|
+      `result++` if `$yieldX(block, args)`
+    end
+
+    result
+  end
+
+  def cycle(n = nil, &block)
+    unless block_given?
+      return enum_for(:cycle, n) do
+        if n.nil?
+          respond_to?(:size) ? ::Float::INFINITY : nil
+        else
+          n = ::Opal.coerce_to!(n, ::Integer, :to_int)
+          n > 0 ? enumerator_size * n : 0
+        end
+      end
+    end
+
+    unless n.nil?
+      n = ::Opal.coerce_to! n, ::Integer, :to_int
+
+      return if `n <= 0`
+    end
+
+    %x{
+      var all = [], i, length, value;
+
+      self.$each.$$p = function() {
+        var param = #{::Opal.destructure(`arguments`)},
+            value = $yield1(block, param);
+
+        all.push(param);
+      }
+
+      self.$each();
+
+      if (all.length === 0) {
+        return nil;
+      }
+
+      if (n === nil) {
+        while (true) {
+          for (i = 0, length = all.length; i < length; i++) {
+            value = $yield1(block, all[i]);
+          }
+        }
+      }
+      else {
+        while (n > 1) {
+          for (i = 0, length = all.length; i < length; i++) {
+            value = $yield1(block, all[i]);
+          }
+
+          n--;
+        }
+      }
+    }
+  end
+
+  def detect(ifnone = undefined, &block)
+    return enum_for :detect, ifnone unless block_given?
+
+    each do |*args|
+      value = ::Opal.destructure(args)
+      if yield(value)
+        return value
+      end
+    end
+
+    %x{
+      if (ifnone !== undefined) {
+        if (typeof(ifnone) === 'function') {
+          return ifnone();
+        } else {
+          return ifnone;
+        }
+      }
+    }
+
+    nil
+  end
+
+  def drop(number)
+    number = `$coerce_to(number, #{::Integer}, 'to_int')`
+
+    if `number < 0`
+      ::Kernel.raise ::ArgumentError, 'attempt to drop negative size'
+    end
+
+    %x{
+      var result  = [],
+          current = 0;
+
+      self.$each.$$p = function() {
+        if (number <= current) {
+          result.push(#{::Opal.destructure(`arguments`)});
+        }
+
+        current++;
+      };
+
+      self.$each()
+
+      return result;
+    }
+  end
+
+  def drop_while(&block)
+    return enum_for :drop_while unless block_given?
+
+    %x{
+      var result   = [],
+          dropping = true;
+
+      self.$each.$$p = function() {
+        var param = #{::Opal.destructure(`arguments`)};
+
+        if (dropping) {
+          var value = $yield1(block, param);
+
+          if (!$truthy(value)) {
+            dropping = false;
+            result.push(param);
+          }
+        }
+        else {
+          result.push(param);
+        }
+      };
+
+      self.$each();
+
+      return result;
+    }
+  end
+
+  def each_cons(n, &block)
+    if `arguments.length != 1`
+      ::Kernel.raise ::ArgumentError, "wrong number of arguments (#{`arguments.length`} for 1)"
+    end
+
+    n = ::Opal.try_convert n, ::Integer, :to_int
+
+    if `n <= 0`
+      ::Kernel.raise ::ArgumentError, 'invalid size'
+    end
+
+    unless block_given?
+      return enum_for(:each_cons, n) do
+        enum_size = enumerator_size
+        if enum_size.nil?
+          nil
+        elsif enum_size == 0 || enum_size < n
+          0
+        else
+          enum_size - n + 1
+        end
+      end
+    end
+
+    %x{
+      var buffer = [];
+
+      self.$each.$$p = function() {
+        var element = #{::Opal.destructure(`arguments`)};
+        buffer.push(element);
+        if (buffer.length > n) {
+          buffer.shift();
+        }
+        if (buffer.length == n) {
+          $yield1(block, buffer.slice(0, n));
+        }
+      }
+
+      self.$each();
+
+      return self;
+    }
+  end
+
+  def each_entry(*data, &block)
+    unless block_given?
+      return to_enum(:each_entry, *data) { enumerator_size }
+    end
+
+    %x{
+      self.$each.$$p = function() {
+        var item = #{::Opal.destructure(`arguments`)};
+
+        $yield1(block, item);
+      }
+
+      self.$each.apply(self, data);
+
+      return self;
+    }
+  end
+
+  def each_slice(n, &block)
+    n = `$coerce_to(#{n}, #{::Integer}, 'to_int')`
+
+    if `n <= 0`
+      ::Kernel.raise ::ArgumentError, 'invalid slice size'
+    end
+
+    return enum_for(:each_slice, n) { respond_to?(:size) ? (size / n).ceil : nil } unless block_given?
+
+    %x{
+      var slice = []
+
+      self.$each.$$p = function() {
+        var param = #{::Opal.destructure(`arguments`)};
+
+        slice.push(param);
+
+        if (slice.length === n) {
+          $yield1(block, slice);
+          slice = [];
+        }
+      };
+
+      self.$each();
+
+      // our "last" group, if smaller than n then won't have been yielded
+      if (slice.length > 0) {
+        $yield1(block, slice);
+      }
+    }
+
+    self
+  end
+
+  def each_with_index(*args, &block)
+    return enum_for(:each_with_index, *args) { enumerator_size } unless block_given?
+
+    %x{
+      var index = 0;
+
+      self.$each.$$p = function() {
+        var param = #{::Opal.destructure(`arguments`)};
+
+        block(param, index);
+
+        index++;
+      };
+
+      self.$each.apply(self, args);
+    }
+
+    self
+  end
+
+  def each_with_object(object, &block)
+    return enum_for(:each_with_object, object) { enumerator_size } unless block_given?
+
+    %x{
+      self.$each.$$p = function() {
+        var param = #{::Opal.destructure(`arguments`)};
+
+        block(param, object);
+      };
+
+      self.$each();
+    }
+
+    object
+  end
+
+  def entries(*args)
+    %x{
+      var result = [];
+
+      self.$each.$$p = function() {
+        result.push(#{::Opal.destructure(`arguments`)});
+      };
+
+      self.$each.apply(self, args);
+
+      return result;
+    }
+  end
+
+  def filter_map(&block)
+    return enum_for(:filter_map) { enumerator_size } unless block_given?
+
+    map(&block).select(&:itself)
+  end
+
+  def find_all(&block)
+    return enum_for(:find_all) { enumerator_size } unless block_given?
+
+    %x{
+      var result = [];
+
+      self.$each.$$p = function() {
+        var param = #{::Opal.destructure(`arguments`)},
+            value = $yield1(block, param);
+
+        if ($truthy(value)) {
+          result.push(param);
+        }
+      };
+
+      self.$each();
+
+      return result;
+    }
+  end
+
+  def find_index(object = undefined, &block)
+    return enum_for :find_index if `object === undefined && block === nil`
+
+    %x{
+      if (object != null && block !== nil) {
+        #{warn('warning: given block not used')}
+      }
+    }
+
+    index = 0
+
+    if `object != null`
+      each do |*value|
+        if ::Opal.destructure(value) == object
+          return index
+        end
+
+        `index += 1`
+      end
+    else
+      each do |*value|
+        if yield(*value)
+          return index
+        end
+
+        `index += 1`
+      end
+    end
+
+    nil
+  end
+
+  def first(number = undefined)
+    if `number === undefined`
+      each do |value|
+        return value
+      end
+    else
+      result = []
+      number = `$coerce_to(number, #{::Integer}, 'to_int')`
+
+      if `number < 0`
+        ::Kernel.raise ::ArgumentError, 'attempt to take negative size'
+      end
+
+      if `number == 0`
+        return []
+      end
+
+      current = 0
+
+      each do |*args|
+        `result.push(#{::Opal.destructure(args)})`
+
+        if `number <= ++current`
+          return result
+        end
+      end
+
+      result
+    end
+  end
+
+  def grep(pattern, &block)
+    result = []
+
+    each do |*value|
+      cmp = `comparableForPattern(value)`
+      next unless pattern.__send__(:===, *cmp)
+      if block_given?
+        value = [value] if value.length > 1
+        value = yield(*value)
+      elsif value.length <= 1
+        value = value[0]
+      end
+
+      result.push(value)
+    end
+
+    result
+  end
+
+  def grep_v(pattern, &block)
+    result = []
+
+    each do |*value|
+      cmp = `comparableForPattern(value)`
+      next if pattern.__send__(:===, *cmp)
+      if block_given?
+        value = [value] if value.length > 1
+        value = yield(*value)
+      elsif value.length <= 1
+        value = value[0]
+      end
+
+      result.push(value)
+    end
+
+    result
+  end
+
+  def group_by(&block)
+    return enum_for(:group_by) { enumerator_size } unless block_given?
+
+    hash = {}
+
+    %x{
+      var result;
+
+      self.$each.$$p = function() {
+        var param = #{::Opal.destructure(`arguments`)},
+            value = $yield1(block, param);
+
+        #{(hash[`value`] ||= []) << `param`};
+      }
+
+      self.$each();
+
+      if (result !== undefined) {
+        return result;
+      }
+    }
+
+    hash
+  end
+
+  def include?(obj)
+    each do |*args|
+      if ::Opal.destructure(args) == obj
+        return true
+      end
+    end
+
+    false
+  end
+
+  def inject(object = undefined, sym = undefined, &block)
+    %x{
+      var result = object;
+
+      if (block !== nil && sym === undefined) {
+        self.$each.$$p = function() {
+          var value = #{::Opal.destructure(`arguments`)};
+
+          if (result === undefined) {
+            result = value;
+            return;
+          }
+
+          value = $yieldX(block, [result, value]);
+
+          result = value;
+        };
+      }
+      else {
+        if (sym === undefined) {
+          if (!#{::Symbol === object}) {
+            #{::Kernel.raise ::TypeError, "#{object.inspect} is not a Symbol"};
+          }
+
+          sym    = object;
+          result = undefined;
+        }
+
+        self.$each.$$p = function() {
+          var value = #{::Opal.destructure(`arguments`)};
+
+          if (result === undefined) {
+            result = value;
+            return;
+          }
+
+          result = #{`result`.__send__ sym, `value`};
+        };
+      }
+
+      self.$each();
+
+      return result == undefined ? nil : result;
+    }
+  end
+
+  def lazy
+    ::Enumerator::Lazy.new(self, enumerator_size) do |enum, *args|
+      enum.yield(*args)
+    end
+  end
+
+  def enumerator_size
+    respond_to?(:size) ? size : nil
+  end
+
+  def max(n = undefined, &block)
+    %x{
+      if (n === undefined || n === nil) {
+        var result, value;
+
+        self.$each.$$p = function() {
+          var item = #{::Opal.destructure(`arguments`)};
+
+          if (result === undefined) {
+            result = item;
+            return;
+          }
+
+          if (block !== nil) {
+            value = $yieldX(block, [item, result]);
+          } else {
+            value = #{`item` <=> `result`};
+          }
+
+          if (value === nil) {
+            #{::Kernel.raise ::ArgumentError, 'comparison failed'};
+          }
+
+          if (value > 0) {
+            result = item;
+          }
+        }
+
+        self.$each();
+
+        if (result === undefined) {
+          return nil;
+        } else {
+          return result;
+        }
+      }
+
+      n = $coerce_to(n, #{::Integer}, 'to_int');
+    }
+
+    sort(&block).reverse.first(n)
+  end
+
+  def max_by(n = nil, &block)
+    return enum_for(:max_by, n) { enumerator_size } unless block
+
+    unless n.nil?
+      return sort_by(&block).reverse.take n
+    end
+
+    %x{
+      var result,
+          by;
+
+      self.$each.$$p = function() {
+        var param = #{::Opal.destructure(`arguments`)},
+            value = $yield1(block, param);
+
+        if (result === undefined) {
+          result = param;
+          by     = value;
+          return;
+        }
+
+        if (#{`value` <=> `by`} > 0) {
+          result = param
+          by     = value;
+        }
+      };
+
+      self.$each();
+
+      return result === undefined ? nil : result;
+    }
+  end
+
+  def min(n = nil, &block)
+    unless n.nil?
+      if block_given?
+        return sort { |a, b| yield a, b }.take n
+      else
+        return sort.take n
+      end
+    end
+
+    %x{
+      var result;
+
+      if (block !== nil) {
+        self.$each.$$p = function() {
+          var param = #{::Opal.destructure(`arguments`)};
+
+          if (result === undefined) {
+            result = param;
+            return;
+          }
+
+          var value = block(param, result);
+
+          if (value === nil) {
+            #{::Kernel.raise ::ArgumentError, 'comparison failed'};
+          }
+
+          if (value < 0) {
+            result = param;
+          }
+        };
+      }
+      else {
+        self.$each.$$p = function() {
+          var param = #{::Opal.destructure(`arguments`)};
+
+          if (result === undefined) {
+            result = param;
+            return;
+          }
+
+          if (#{::Opal.compare(`param`, `result`)} < 0) {
+            result = param;
+          }
+        };
+      }
+
+      self.$each();
+
+      return result === undefined ? nil : result;
+    }
+  end
+
+  def min_by(n = nil, &block)
+    return enum_for(:min_by, n) { enumerator_size } unless block
+
+    unless n.nil?
+      return sort_by(&block).take n
+    end
+
+    %x{
+      var result,
+          by;
+
+      self.$each.$$p = function() {
+        var param = #{::Opal.destructure(`arguments`)},
+            value = $yield1(block, param);
+
+        if (result === undefined) {
+          result = param;
+          by     = value;
+          return;
+        }
+
+        if (#{`value` <=> `by`} < 0) {
+          result = param
+          by     = value;
+        }
+      };
+
+      self.$each();
+
+      return result === undefined ? nil : result;
+    }
+  end
+
+  def minmax(&block)
+    block ||= ::Kernel.proc { |a, b| a <=> b }
+
+    %x{
+      var min = nil, max = nil, first_time = true;
+
+      self.$each.$$p = function() {
+        var element = #{::Opal.destructure(`arguments`)};
+        if (first_time) {
+          min = max = element;
+          first_time = false;
+        } else {
+          var min_cmp = #{block.call(`min`, `element`)};
+
+          if (min_cmp === nil) {
+            #{::Kernel.raise ::ArgumentError, 'comparison failed'}
+          } else if (min_cmp > 0) {
+            min = element;
+          }
+
+          var max_cmp = #{block.call(`max`, `element`)};
+
+          if (max_cmp === nil) {
+            #{::Kernel.raise ::ArgumentError, 'comparison failed'}
+          } else if (max_cmp < 0) {
+            max = element;
+          }
+        }
+      }
+
+      self.$each();
+
+      return [min, max];
+    }
+  end
+
+  def minmax_by(&block)
+    return enum_for(:minmax_by) { enumerator_size } unless block
+
+    %x{
+      var min_result = nil,
+          max_result = nil,
+          min_by,
+          max_by;
+
+      self.$each.$$p = function() {
+        var param = #{::Opal.destructure(`arguments`)},
+            value = $yield1(block, param);
+
+        if ((min_by === undefined) || #{`value` <=> `min_by`} < 0) {
+          min_result = param;
+          min_by     = value;
+        }
+
+        if ((max_by === undefined) || #{`value` <=> `max_by`} > 0) {
+          max_result = param;
+          max_by     = value;
+        }
+      };
+
+      self.$each();
+
+      return [min_result, max_result];
+    }
+  end
+
+  def none?(pattern = undefined, &block)
+    if `pattern !== undefined`
+      each do |*value|
+        comparable = `comparableForPattern(value)`
+
+        return false if pattern.public_send(:===, *comparable)
+      end
+    elsif block_given?
+      each do |*value|
+        if yield(*value)
+          return false
+        end
+      end
+    else
+      each do |*value|
+        item = ::Opal.destructure(value)
+
+        return false if item
+      end
+    end
+
+    true
+  end
+
+  def one?(pattern = undefined, &block)
+    count = 0
+
+    if `pattern !== undefined`
+      each do |*value|
+        comparable = `comparableForPattern(value)`
+
+        if pattern.public_send(:===, *comparable)
+          count += 1
+          return false if count > 1
+        end
+      end
+    elsif block_given?
+      each do |*value|
+        next unless yield(*value)
+        count += 1
+
+        return false if count > 1
+      end
+    else
+      each do |*value|
+        next unless ::Opal.destructure(value)
+        count += 1
+
+        return false if count > 1
+      end
+    end
+
+    count == 1
+  end
+
+  def partition(&block)
+    return enum_for(:partition) { enumerator_size } unless block_given?
+
+    %x{
+      var truthy = [], falsy = [], result;
+
+      self.$each.$$p = function() {
+        var param = #{::Opal.destructure(`arguments`)},
+            value = $yield1(block, param);
+
+        if ($truthy(value)) {
+          truthy.push(param);
+        }
+        else {
+          falsy.push(param);
+        }
+      };
+
+      self.$each();
+
+      return [truthy, falsy];
+    }
+  end
+
+  def reject(&block)
+    return enum_for(:reject) { enumerator_size } unless block_given?
+
+    %x{
+      var result = [];
+
+      self.$each.$$p = function() {
+        var param = #{::Opal.destructure(`arguments`)},
+            value = $yield1(block, param);
+
+        if (!$truthy(value)) {
+          result.push(param);
+        }
+      };
+
+      self.$each();
+
+      return result;
+    }
+  end
+
+  def reverse_each(&block)
+    return enum_for(:reverse_each) { enumerator_size } unless block_given?
+
+    %x{
+      var result = [];
+
+      self.$each.$$p = function() {
+        result.push(arguments);
+      };
+
+      self.$each();
+
+      for (var i = result.length - 1; i >= 0; i--) {
+        $yieldX(block, result[i]);
+      }
+
+      return result;
+    }
+  end
+
+  def slice_before(pattern = undefined, &block)
+    if `pattern === undefined && block === nil`
+      ::Kernel.raise ::ArgumentError, 'both pattern and block are given'
+    end
+
+    if `pattern !== undefined && block !== nil || arguments.length > 1`
+      ::Kernel.raise ::ArgumentError, "wrong number of arguments (#{`arguments.length`} expected 1)"
+    end
+
+    ::Enumerator.new do |e|
+      %x{
+        var slice = [];
+
+        if (block !== nil) {
+          if (pattern === undefined) {
+            self.$each.$$p = function() {
+              var param = #{::Opal.destructure(`arguments`)},
+                  value = $yield1(block, param);
+
+              if ($truthy(value) && slice.length > 0) {
+                #{e << `slice`};
+                slice = [];
+              }
+
+              slice.push(param);
+            };
+          }
+          else {
+            self.$each.$$p = function() {
+              var param = #{::Opal.destructure(`arguments`)},
+                  value = block(param, #{pattern.dup});
+
+              if ($truthy(value) && slice.length > 0) {
+                #{e << `slice`};
+                slice = [];
+              }
+
+              slice.push(param);
+            };
+          }
+        }
+        else {
+          self.$each.$$p = function() {
+            var param = #{::Opal.destructure(`arguments`)},
+                value = #{pattern === `param`};
+
+            if ($truthy(value) && slice.length > 0) {
+              #{e << `slice`};
+              slice = [];
+            }
+
+            slice.push(param);
+          };
+        }
+
+        self.$each();
+
+        if (slice.length > 0) {
+          #{e << `slice`};
+        }
+      }
+    end
+  end
+
+  def slice_after(pattern = undefined, &block)
+    if `pattern === undefined && block === nil`
+      ::Kernel.raise ::ArgumentError, 'both pattern and block are given'
+    end
+
+    if `pattern !== undefined && block !== nil || arguments.length > 1`
+      ::Kernel.raise ::ArgumentError, "wrong number of arguments (#{`arguments.length`} expected 1)"
+    end
+
+    if `pattern !== undefined`
+      block = ::Kernel.proc { |e| pattern === e }
+    end
+
+    ::Enumerator.new do |yielder|
+      %x{
+        var accumulate;
+
+        self.$each.$$p = function() {
+          var element = #{::Opal.destructure(`arguments`)},
+              end_chunk = $yield1(block, element);
+
+          if (accumulate == null) {
+            accumulate = [];
+          }
+
+          if ($truthy(end_chunk)) {
+            accumulate.push(element);
+            #{yielder.yield(`accumulate`)};
+            accumulate = null;
+          } else {
+            accumulate.push(element)
+          }
+        }
+
+        self.$each();
+
+        if (accumulate != null) {
+          #{yielder.yield(`accumulate`)};
+        }
+      }
+    end
+  end
+
+  def slice_when(&block)
+    ::Kernel.raise ::ArgumentError, 'wrong number of arguments (0 for 1)' unless block_given?
+
+    ::Enumerator.new do |yielder|
+      %x{
+        var slice = nil, last_after = nil;
+
+        self.$each_cons.$$p = function() {
+          var params = #{::Opal.destructure(`arguments`)},
+              before = params[0],
+              after = params[1],
+              match = $yieldX(block, [before, after]);
+
+          last_after = after;
+
+          if (slice === nil) {
+            slice = [];
+          }
+
+          if ($truthy(match)) {
+            slice.push(before);
+            #{yielder.yield(`slice`)};
+            slice = [];
+          } else {
+            slice.push(before);
+          }
+        }
+
+        self.$each_cons(2);
+
+        if (slice !== nil) {
+          slice.push(last_after);
+          #{yielder.yield(`slice`)};
+        }
+      }
+    end
+  end
+
+  def sort(&block)
+    ary = to_a
+    block = ->(a, b) { a <=> b } unless block_given?
+    ary.sort(&block)
+  end
+
+  def sort_by(&block)
+    return enum_for(:sort_by) { enumerator_size } unless block_given?
+
+    dup = map do
+      arg = ::Opal.destructure(`arguments`)
+      [yield(arg), arg]
+    end
+    dup.sort! { |a, b| `a[0]` <=> `b[0]` }
+    dup.map! { |i| `i[1]` }
+  end
+
+  # This method implements the Kahan summation algorithm if it is possible to apply one.
+  def sum(initial = 0)
+    result = initial
+    compensation = 0
+
+    each do |*args|
+      item = if block_given?
+               yield(*args)
+             else
+               ::Opal.destructure(args)
+             end
+
+      if ![::Float::INFINITY, -::Float::INFINITY].include?(item) && item.respond_to?(:-)
+        y = item - compensation
+        t = result + y
+        compensation = (t - result) - y
+        result = t
+      else
+        result += item
+      end
+    end
+
+    result
+  end
+
+  def take(num)
+    first(num)
+  end
+
+  def take_while(&block)
+    return enum_for :take_while unless block
+
+    result = []
+
+    each do |*args|
+      value = ::Opal.destructure(args)
+
+      unless yield(value)
+        return result
+      end
+
+      `result.push(value)`
+    end
+  end
+
+  def uniq(&block)
+    hash = {}
+
+    each do |*args|
+      value = ::Opal.destructure(args)
+
+      produced = if block_given?
+                   yield(value)
+                 else
+                   value
+                 end
+
+      unless hash.key?(produced)
+        hash[produced] = value
+      end
+    end
+
+    hash.values
+  end
+
+  def tally(hash = undefined)
+    out = group_by(&:itself).transform_values(&:count)
+    if hash
+      out.each { |k, v| hash[k] = hash.fetch(k, 0) + v }
+      hash
+    else
+      out
+    end
+  end
+
+  def to_h(*args, &block)
+    return map(&block).to_h(*args) if block_given?
+
+    %x{
+      var hash = #{{}};
+
+      self.$each.$$p = function() {
+        var param = #{::Opal.destructure(`arguments`)};
+        var ary = #{::Opal.coerce_to?(`param`, ::Array, :to_ary)}, key, val;
+        if (!ary.$$is_array) {
+          #{::Kernel.raise ::TypeError, "wrong element type #{`ary`.class} (expected array)"}
+        }
+        if (ary.length !== 2) {
+          #{::Kernel.raise ::ArgumentError, "wrong array length (expected 2, was #{`ary`.length})"}
+        }
+        key = ary[0];
+        val = ary[1];
+
+        Opal.hash_put(hash, key, val);
+      };
+
+      self.$each.apply(self, args);
+
+      return hash;
+    }
+  end
+
+  def zip(*others, &block)
+    to_a.zip(*others)
+  end
+
+  alias find detect
+  alias filter find_all
+  alias flat_map collect_concat
+  alias map collect
+  alias member? include?
+  alias reduce inject
+  alias select find_all
+  alias to_a entries
+end
diff --git a/opal/corelib/enumerator.rb b/opal/corelib/enumerator.rb
new file mode 100644
index 00000000..c1926e4a
--- /dev/null
+++ b/opal/corelib/enumerator.rb
@@ -0,0 +1,142 @@
+# helpers: slice, coerce_to
+
+require 'corelib/enumerable'
+
+class ::Enumerator
+  include ::Enumerable
+
+  `self.$$prototype.$$is_enumerator = true`
+
+  def self.for(object, method = :each, *args, &block)
+    %x{
+      var obj = #{allocate};
+
+      obj.object = object;
+      obj.size   = block;
+      obj.method = method;
+      obj.args   = args;
+      obj.cursor = 0;
+
+      return obj;
+    }
+  end
+
+  def initialize(*, &block)
+    @cursor = 0
+    if block
+      @object = Generator.new(&block)
+      @method = :each
+      @args   = []
+      @size   = `arguments[0] || nil`
+
+      if @size && !@size.respond_to?(:call)
+        @size = `$coerce_to(#{@size}, #{::Integer}, 'to_int')`
+      end
+    else
+      @object = `arguments[0]`
+      @method = `arguments[1] || "each"`
+      @args   = `$slice.call(arguments, 2)`
+      @size   = nil
+    end
+  end
+
+  def each(*args, &block)
+    return self if block.nil? && args.empty?
+
+    args = @args + args
+
+    return self.class.new(@object, @method, *args) if block.nil?
+
+    @object.__send__(@method, *args, &block)
+  end
+
+  def size
+    @size.respond_to?(:call) ? @size.call(*@args) : @size
+  end
+
+  def with_index(offset = 0, &block)
+    offset = if offset
+               `$coerce_to(offset, #{::Integer}, 'to_int')`
+             else
+               0
+             end
+
+    return enum_for(:with_index, offset) { size } unless block
+
+    %x{
+      var result, index = offset;
+
+      self.$each.$$p = function() {
+        var param = #{::Opal.destructure(`arguments`)},
+            value = block(param, index);
+
+        index++;
+
+        return value;
+      }
+
+      return self.$each();
+    }
+  end
+
+  def each_with_index(&block)
+    return enum_for(:each_with_index) { size } unless block_given?
+
+    super
+    @object
+  end
+
+  def rewind
+    @cursor = 0
+
+    self
+  end
+
+  def peek_values
+    @values ||= map { |*i| i }
+    ::Kernel.raise ::StopIteration, 'iteration reached an end' if @cursor >= @values.length
+    @values[@cursor]
+  end
+
+  def peek
+    values = peek_values
+    values.length <= 1 ? values[0] : values
+  end
+
+  def next_values
+    out = peek_values
+    @cursor += 1
+    out
+  end
+
+  def next
+    values = next_values
+    values.length <= 1 ? values[0] : values
+  end
+
+  def feed(arg)
+    raise NotImplementedError, "Opal doesn't support Enumerator#feed"
+  end
+
+  def +(other)
+    ::Enumerator::Chain.new(self, other)
+  end
+
+  def inspect
+    result = "#<#{self.class}: #{@object.inspect}:#{@method}"
+
+    if @args.any?
+      result += "(#{@args.inspect[::Range.new(1, -2)]})"
+    end
+
+    result + '>'
+  end
+
+  alias with_object each_with_object
+
+  autoload :ArithmeticSequence, 'corelib/enumerator/arithmetic_sequence'
+  autoload :Chain, 'corelib/enumerator/chain'
+  autoload :Generator, 'corelib/enumerator/generator'
+  autoload :Lazy, 'corelib/enumerator/lazy'
+  autoload :Yielder, 'corelib/enumerator/yielder'
+end
diff --git a/opal/corelib/enumerator/arithmetic_sequence.rb b/opal/corelib/enumerator/arithmetic_sequence.rb
new file mode 100644
index 00000000..4de6f213
--- /dev/null
+++ b/opal/corelib/enumerator/arithmetic_sequence.rb
@@ -0,0 +1,177 @@
+class ::Enumerator
+  class self::ArithmeticSequence < self
+    `Opal.prop(self.$$prototype, '$$is_arithmetic_seq', true)`
+
+    `var inf = Infinity`
+
+    # @private
+    def initialize(range, step = undefined, creation_method = :step)
+      @creation_method = creation_method
+      if range.is_a? ::Array
+        @step_arg1, @step_arg2, @topfx, @bypfx = *range
+        @receiver_num = step
+        @step = 1
+
+        @range = if @step_arg2
+                   @step = @step_arg2
+                   (@receiver_num..@step_arg1)
+                 elsif @step_arg1
+                   (@receiver_num..@step_arg1)
+                 else
+                   (@receiver_num..nil)
+                 end
+      else
+        @skipped_arg = true unless step
+        @range, @step = range, step || 1
+      end
+
+      @object = self
+
+      ::Kernel.raise ArgumentError, "step can't be 0" if @step == 0
+      unless @step.respond_to? :to_int
+        ::Kernel.raise ArgumentError, "no implicit conversion of #{@step.class} " \
+                                      'into Integer'
+      end
+    end
+
+    attr_reader :step
+
+    def begin
+      @range.begin
+    end
+
+    def end
+      @range.end
+    end
+
+    def exclude_end?
+      @range.exclude_end?
+    end
+
+    # @private
+    def _lesser_than_end?(val)
+      end_ = self.end || `inf`
+      if step > 0
+        exclude_end? ? val < end_ : val <= end_
+      else
+        exclude_end? ? val > end_ : val >= end_
+      end
+    end
+
+    # @private
+    def _greater_than_begin?(val)
+      begin_ = self.begin || -`inf`
+      if step > 0
+        val > begin_
+      else
+        val < begin_
+      end
+    end
+
+    def first(count = undefined)
+      iter = self.begin || -`inf`
+
+      return _lesser_than_end?(iter) ? iter : nil unless count
+
+      out = []
+
+      while _lesser_than_end?(iter) && count > 0
+        out << iter
+        iter += step
+        count -= 1
+      end
+
+      out
+    end
+
+    def each(&block)
+      return self unless block_given?
+
+      case self.begin
+      when nil
+        ::Kernel.raise TypeError, "nil can't be coerced into Integer"
+      end
+
+      iter = self.begin || -`inf`
+
+      while _lesser_than_end?(iter)
+        yield iter
+        iter += step
+      end
+      self
+    end
+
+    def last(count = undefined)
+      case self.end
+      when `inf`, -`inf`
+        ::Kernel.raise ::FloatDomainError, self.end
+      when nil
+        ::Kernel.raise ::RangeError, 'cannot get the last element of endless arithmetic sequence'
+      end
+
+      iter = self.end - ((self.end - self.begin) % step)
+      iter -= step unless _lesser_than_end?(iter)
+
+      return _greater_than_begin?(iter) ? iter : nil unless count
+
+      out = []
+
+      while _greater_than_begin?(iter) && count > 0
+        out << iter
+        iter -= step
+        count -= 1
+      end
+
+      out.reverse
+    end
+
+    def size
+      step_sign = step > 0 ? 1 : -1
+
+      if !_lesser_than_end?(self.begin)
+        0
+      elsif [-`inf`, `inf`].include?(step)
+        1
+      elsif [-`inf` * step_sign, nil].include?(self.begin) ||
+            [`inf` * step_sign, nil].include?(self.end)
+        `inf`
+      else
+        iter = self.end - ((self.end - self.begin) % step)
+        iter -= step unless _lesser_than_end?(iter)
+        ((iter - self.begin) / step).abs.to_i + 1
+      end
+    end
+
+    def ==(other)
+      self.class == other.class &&
+        self.begin == other.begin &&
+        self.end == other.end &&
+        step == other.step &&
+        exclude_end? == other.exclude_end?
+    end
+
+    def hash
+      [self.begin, self.end, step, exclude_end?].hash
+    end
+
+    def inspect
+      if @receiver_num
+        args = if @step_arg2
+                 "(#{@topfx}#{@step_arg1.inspect}, #{@bypfx}#{@step_arg2.inspect})"
+               elsif @step_arg1
+                 "(#{@topfx}#{@step_arg1.inspect})"
+               end
+
+        "(#{@receiver_num.inspect}.#{@creation_method}#{args})"
+      else
+        args = unless @skipped_arg
+                 "(#{@step})"
+               end
+        "((#{@range.inspect}).#{@creation_method}#{args})"
+      end
+    end
+
+    alias === ==
+    alias eql? ==
+  end
+end
diff --git a/opal/corelib/enumerator/chain.rb b/opal/corelib/enumerator/chain.rb
new file mode 100644
index 00000000..a592d352
--- /dev/null
+++ b/opal/corelib/enumerator/chain.rb
@@ -0,0 +1,42 @@
+class ::Enumerator
+  class self::Chain < self
+    def initialize(*enums)
+      @enums = enums
+      @iterated = []
+      @object = self
+    end
+
+    def each(*args, &block)
+      return to_enum(:each, *args) { size } unless block_given?
+
+      @enums.each do |enum|
+        @iterated << enum
+        enum.each(*args, &block)
+      end
+
+      self
+    end
+
+    def size(*args)
+      accum = 0
+      @enums.each do |enum|
+        size = enum.size(*args)
+        return size if [nil, ::Float::INFINITY].include? size
+        accum += size
+      end
+      accum
+    end
+
+    def rewind
+      @iterated.reverse_each do |enum|
+        enum.rewind if enum.respond_to? :rewind
+      end
+      @iterated = []
+      self
+    end
+
+    def inspect
+      "#<Enumerator::Chain: #{@enums.inspect}>"
+    end
+  end
+end
diff --git a/opal/corelib/enumerator/generator.rb b/opal/corelib/enumerator/generator.rb
new file mode 100644
index 00000000..455225fc
--- /dev/null
+++ b/opal/corelib/enumerator/generator.rb
@@ -0,0 +1,35 @@
+# helpers: breaker
+
+class Enumerator
+  class Generator
+    include ::Enumerable
+
+    def initialize(&block)
+      ::Kernel.raise ::LocalJumpError, 'no block given' unless block
+
+      @block = block
+    end
+
+    def each(*args, &block)
+      yielder = Yielder.new(&block)
+
+      %x{
+        try {
+          args.unshift(#{yielder});
+
+          Opal.yieldX(#{@block}, args);
+        }
+        catch (e) {
+          if (e === $breaker) {
+            return $breaker.$v;
+          }
+          else {
+            throw e;
+          }
+        }
+      }
+
+      self
+    end
+  end
+end
diff --git a/opal/corelib/enumerator/lazy.rb b/opal/corelib/enumerator/lazy.rb
new file mode 100644
index 00000000..4d7d1f0f
--- /dev/null
+++ b/opal/corelib/enumerator/lazy.rb
@@ -0,0 +1,243 @@
+# helpers: truthy, coerce_to, yield1, yieldX
+
+class ::Enumerator
+  class self::Lazy < self
+    class self::StopLazyError < ::Exception; end
+
+    def self.for(object, *)
+      lazy = super
+      `lazy.enumerator = object`
+      lazy
+    end
+
+    def initialize(object, size = nil, &block)
+      unless block_given?
+        ::Kernel.raise ::ArgumentError, 'tried to call lazy new without a block'
+      end
+
+      @enumerator = object
+
+      super size do |yielder, *each_args|
+        object.each(*each_args) do |*args|
+          %x{
+            args.unshift(#{yielder});
+
+            $yieldX(block, args);
+          }
+        end
+      rescue StopLazyError
+        nil
+      end
+    end
+
+    def lazy
+      self
+    end
+
+    def collect(&block)
+      unless block
+        ::Kernel.raise ::ArgumentError, 'tried to call lazy map without a block'
+      end
+
+      Lazy.new(self, enumerator_size) do |enum, *args|
+        %x{
+          var value = $yieldX(block, args);
+
+          #{enum.yield `value`};
+        }
+      end
+    end
+
+    def collect_concat(&block)
+      unless block
+        ::Kernel.raise ::ArgumentError, 'tried to call lazy map without a block'
+      end
+
+      Lazy.new(self, nil) do |enum, *args|
+        %x{
+          var value = $yieldX(block, args);
+
+          if (#{`value`.respond_to? :force} && #{`value`.respond_to? :each}) {
+            #{`value`.each { |v| enum.yield v }}
+          }
+          else {
+            var array = #{::Opal.try_convert `value`, ::Array, :to_ary};
+
+            if (array === nil) {
+              #{enum.yield `value`};
+            }
+            else {
+              #{`value`.each { |v| enum.yield v }};
+            }
+          }
+        }
+      end
+    end
+
+    def drop(n)
+      n = `$coerce_to(#{n}, #{::Integer}, 'to_int')`
+
+      if n < 0
+        ::Kernel.raise ::ArgumentError, 'attempt to drop negative size'
+      end
+
+      current_size = enumerator_size
+      set_size     = if ::Integer === current_size
+                       n < current_size ? n : current_size
+                     else
+                       current_size
+                     end
+
+      dropped = 0
+      Lazy.new(self, set_size) do |enum, *args|
+        if dropped < n
+          dropped += 1
+        else
+          enum.yield(*args)
+        end
+      end
+    end
+
+    def drop_while(&block)
+      unless block
+        ::Kernel.raise ::ArgumentError, 'tried to call lazy drop_while without a block'
+      end
+
+      succeeding = true
+      Lazy.new(self, nil) do |enum, *args|
+        if succeeding
+          %x{
+            var value = $yieldX(block, args);
+
+            if (!$truthy(value)) {
+              succeeding = false;
+
+              #{enum.yield(*args)};
+            }
+          }
+        else
+          enum.yield(*args)
+        end
+      end
+    end
+
+    def enum_for(method = :each, *args, &block)
+      self.class.for(self, method, *args, &block)
+    end
+
+    def find_all(&block)
+      unless block
+        ::Kernel.raise ::ArgumentError, 'tried to call lazy select without a block'
+      end
+
+      Lazy.new(self, nil) do |enum, *args|
+        %x{
+          var value = $yieldX(block, args);
+
+          if ($truthy(value)) {
+            #{enum.yield(*args)};
+          }
+        }
+      end
+    end
+
+    def grep(pattern, &block)
+      if block
+        Lazy.new(self, nil) do |enum, *args|
+          %x{
+            var param = #{::Opal.destructure(args)},
+                value = #{pattern === `param`};
+
+            if ($truthy(value)) {
+              value = $yield1(block, param);
+
+              #{enum.yield `$yield1(block, param)`};
+            }
+          }
+        end
+      else
+        Lazy.new(self, nil) do |enum, *args|
+          %x{
+            var param = #{::Opal.destructure(args)},
+                value = #{pattern === `param`};
+
+            if ($truthy(value)) {
+              #{enum.yield `param`};
+            }
+          }
+        end
+      end
+    end
+
+    def reject(&block)
+      unless block
+        ::Kernel.raise ::ArgumentError, 'tried to call lazy reject without a block'
+      end
+
+      Lazy.new(self, nil) do |enum, *args|
+        %x{
+          var value = $yieldX(block, args);
+
+          if (!$truthy(value)) {
+            #{enum.yield(*args)};
+          }
+        }
+      end
+    end
+
+    def take(n)
+      n = `$coerce_to(#{n}, #{::Integer}, 'to_int')`
+
+      if n < 0
+        ::Kernel.raise ::ArgumentError, 'attempt to take negative size'
+      end
+
+      current_size = enumerator_size
+      set_size     = if ::Integer === current_size
+                       n < current_size ? n : current_size
+                     else
+                       current_size
+                     end
+
+      taken = 0
+      Lazy.new(self, set_size) do |enum, *args|
+        if taken < n
+          enum.yield(*args)
+          taken += 1
+        else
+          ::Kernel.raise StopLazyError
+        end
+      end
+    end
+
+    def take_while(&block)
+      unless block
+        ::Kernel.raise ::ArgumentError, 'tried to call lazy take_while without a block'
+      end
+
+      Lazy.new(self, nil) do |enum, *args|
+        %x{
+          var value = $yieldX(block, args);
+
+          if ($truthy(value)) {
+            #{enum.yield(*args)};
+          }
+          else {
+            #{::Kernel.raise StopLazyError};
+          }
+        }
+      end
+    end
+
+    def inspect
+      "#<#{self.class}: #{@enumerator.inspect}>"
+    end
+
+    alias force to_a
+    alias filter find_all
+    alias flat_map collect_concat
+    alias map collect
+    alias select find_all
+    alias to_enum enum_for
+  end
+end
diff --git a/opal/corelib/enumerator/yielder.rb b/opal/corelib/enumerator/yielder.rb
new file mode 100644
index 00000000..8cf35f8b
--- /dev/null
+++ b/opal/corelib/enumerator/yielder.rb
@@ -0,0 +1,36 @@
+# helpers: breaker
+
+class Enumerator
+  class Yielder
+    def initialize(&block)
+      @block = block
+      # rubocop:disable Lint/Void
+      self
+      # rubocop:enable Lint/Void
+    end
+
+    def yield(*values)
+      %x{
+        var value = Opal.yieldX(#{@block}, values);
+
+        if (value === $breaker) {
+          throw $breaker;
+        }
+
+        return value;
+      }
+    end
+
+    def <<(value)
+      self.yield(value)
+
+      self
+    end
+
+    def to_proc
+      proc do |*values|
+        self.yield(*values)
+      end
+    end
+  end
+end
diff --git a/opal/corelib/error.rb b/opal/corelib/error.rb
new file mode 100644
index 00000000..0acfa220
--- /dev/null
+++ b/opal/corelib/error.rb
@@ -0,0 +1,299 @@
+class ::Exception < `Error`
+  `Opal.prop(self.$$prototype, '$$is_exception', true)`
+  `var stack_trace_limit`
+
+  def self.new(*args)
+    %x{
+      var message   = (args.length > 0) ? args[0] : nil;
+      var error     = new self.$$constructor(message);
+      error.name    = self.$$name;
+      error.message = message;
+      error.cause   = #{$!};
+      Opal.send(error, error.$initialize, args);
+
+      // Error.captureStackTrace() will use .name and .toString to build the
+      // first line of the stack trace so it must be called after the error
+      // has been initialized.
+      // https://nodejs.org/dist/latest-v6.x/docs/api/errors.html
+      if (Opal.config.enable_stack_trace && Error.captureStackTrace) {
+        // Passing Kernel.raise will cut the stack trace from that point above
+        Error.captureStackTrace(error, stack_trace_limit);
+      }
+
+      return error;
+    }
+  end
+  `stack_trace_limit = self.$new`
+
+  def self.exception(*args)
+    new(*args)
+  end
+
+  def initialize(*args)
+    # using self.message aka @message to retain compatibility with native exception's message property
+    `self.message = (args.length > 0) ? args[0] : nil`
+  end
+
+  %x{
+    // Convert backtrace from any format to Ruby format
+    function correct_backtrace(backtrace) {
+      var new_bt = [], m;
+
+      for (var i = 0; i < backtrace.length; i++) {
+        var loc = backtrace[i];
+        if (!loc || !loc.$$is_string) {
+          /* Do nothing */
+        }
+        /* Chromium format */
+        else if ((m = loc.match(/^    at (.*?) \((.*?)\)$/))) {
+          new_bt.push(m[2] + ":in `" + m[1] + "'");
+        }
+        else if ((m = loc.match(/^    at (.*?)$/))) {
+          new_bt.push(m[1] + ":in `undefined'");
+        }
+        /* Node format */
+        else if ((m = loc.match(/^  from (.*?)$/))) {
+          new_bt.push(m[1]);
+        }
+        /* Mozilla/Apple format */
+        else if ((m = loc.match(/^(.*?)@(.*?)$/))) {
+          new_bt.push(m[2] + ':in `' + m[1] + "'");
+        }
+      }
+
+      return new_bt;
+    }
+  }
+
+  def backtrace
+    %x{
+      if (self.backtrace) {
+        // nil is a valid backtrace
+        return self.backtrace;
+      }
+
+      var backtrace = self.stack;
+
+      if (typeof(backtrace) !== 'undefined' && backtrace.$$is_string) {
+        return self.backtrace = correct_backtrace(backtrace.split("\n").slice(0, 15));
+      }
+      else if (backtrace) {
+        return self.backtrace = correct_backtrace(backtrace.slice(0, 15));
+      }
+
+      return [];
+    }
+  end
+
+  def backtrace_locations
+    %x{
+      if (self.backtrace_locations) return self.backtrace_locations;
+      self.backtrace_locations = #{backtrace&.map do |loc|
+        ::Thread::Backtrace::Location.new(loc)
+      end}
+      return self.backtrace_locations;
+    }
+  end
+
+  def cause
+    `self.cause || nil`
+  end
+
+  def exception(str = nil)
+    %x{
+      if (str === nil || self === str) {
+        return self;
+      }
+
+      var cloned = #{clone};
+      cloned.message = str;
+      if (self.backtrace) cloned.backtrace = self.backtrace.$dup();
+      cloned.stack = self.stack;
+      cloned.cause = self.cause;
+      return cloned;
+    }
+  end
+
+  # not using alias message to_s because you need to be able to override to_s and have message use overridden method, won't work with alias
+  def message
+    to_s
+  end
+
+  def full_message(kwargs = nil)
+    unless defined? Hash
+      # We are dealing with an unfully loaded Opal library, so we should
+      # do with as little as we can.
+
+      return "#{@message}\n#{`self.stack`}"
+    end
+
+    kwargs = { highlight: $stderr.tty?, order: :top }.merge(kwargs || {})
+    highlight, order = kwargs[:highlight], kwargs[:order]
+
+    ::Kernel.raise ::ArgumentError, "expected true or false as highlight: #{highlight}" unless [true, false].include? highlight
+    ::Kernel.raise ::ArgumentError, "expected :top or :bottom as order: #{order}" unless %i[top bottom].include? order
+
+    if highlight
+      bold_underline = "\e[1;4m"
+      bold = "\e[1m"
+      reset = "\e[m"
+    else
+      bold_underline = bold = reset = ''
+    end
+
+    bt = backtrace.dup
+    bt = caller if !bt || bt.empty?
+    first = bt.shift
+
+    msg = "#{first}: "
+    msg += "#{bold}#{to_s} (#{bold_underline}#{self.class}#{reset}#{bold})#{reset}\n"
+
+    msg += bt.map { |loc| "\tfrom #{loc}\n" }.join
+
+    msg += cause.full_message(highlight: highlight) if cause
+
+    if order == :bottom
+      msg = msg.split("\n").reverse.join("\n")
+      msg = "#{bold}Traceback#{reset} (most recent call last):\n" + msg
+    end
+
+    msg
+  end
+
+  def inspect
+    as_str = to_s
+    as_str.empty? ? self.class.to_s : "#<#{self.class.to_s}: #{to_s}>"
+  end
+
+  def set_backtrace(backtrace)
+    %x{
+      var valid = true, i, ii;
+
+      if (backtrace === nil) {
+        self.backtrace = nil;
+        self.stack = '';
+      } else if (backtrace.$$is_string) {
+        self.backtrace = [backtrace];
+        self.stack = '  from ' + backtrace;
+      } else {
+        if (backtrace.$$is_array) {
+          for (i = 0, ii = backtrace.length; i < ii; i++) {
+            if (!backtrace[i].$$is_string) {
+              valid = false;
+              break;
+            }
+          }
+        } else {
+          valid = false;
+        }
+
+        if (valid === false) {
+          #{::Kernel.raise ::TypeError, 'backtrace must be Array of String'}
+        }
+
+        self.backtrace = backtrace;
+        self.stack = #{`backtrace`.map { |i| '  from ' + i }}.join("\n");
+      }
+
+      return backtrace;
+    }
+  end
+
+  def to_s
+    # using self.message aka @message to retain compatibility with native exception's message property
+    (@message && @message.to_s) || self.class.to_s
+  end
+end
+
+# keep the indentation, it makes the exception hierarchy clear
+class ::ScriptError       < ::Exception; end
+class ::SyntaxError         < ::ScriptError; end
+class ::LoadError           < ::ScriptError; end
+class ::NotImplementedError < ::ScriptError; end
+
+class ::SystemExit        < ::Exception; end
+class ::NoMemoryError     < ::Exception; end
+class ::SignalException   < ::Exception; end
+class ::Interrupt           < ::SignalException; end
+class ::SecurityError     < ::Exception; end
+class ::SystemStackError  < ::Exception; end
+
+class ::StandardError     < ::Exception; end
+class ::EncodingError       < ::StandardError; end
+class ::ZeroDivisionError   < ::StandardError; end
+class ::NameError           < ::StandardError; end
+class ::NoMethodError         < ::NameError; end
+class ::RuntimeError        < ::StandardError; end
+class ::FrozenError           < ::RuntimeError; end
+class ::LocalJumpError      < ::StandardError; end
+class ::TypeError           < ::StandardError; end
+class ::ArgumentError       < ::StandardError; end
+class ::UncaughtThrowError    < ::ArgumentError; end
+class ::IndexError          < ::StandardError; end
+class ::StopIteration         < ::IndexError; end
+class ::ClosedQueueError        < ::StopIteration; end
+class ::KeyError              < ::IndexError; end
+class ::RangeError          < ::StandardError; end
+class ::FloatDomainError      < ::RangeError; end
+class ::IOError             < ::StandardError; end
+class ::EOFError              < ::IOError; end
+class ::SystemCallError     < ::StandardError; end
+class ::RegexpError         < ::StandardError; end
+class ::ThreadError         < ::StandardError; end
+class ::FiberError          < ::StandardError; end
+
+::Object.autoload :Errno, 'corelib/error/errno'
+
+class ::UncaughtThrowError < ::ArgumentError
+  attr_reader :tag, :value
+
+  def initialize(tag, value = nil)
+    @tag = tag
+    @value = value
+
+    super("uncaught throw #{@tag.inspect}")
+  end
+end
+
+class ::NameError
+  attr_reader :name
+
+  def initialize(message, name = nil)
+    super message
+    @name = name
+  end
+end
+
+class ::NoMethodError
+  attr_reader :args
+
+  def initialize(message, name = nil, args = [])
+    super message, name
+    @args = args
+  end
+end
+
+class ::StopIteration
+  attr_reader :result
+end
+
+class ::KeyError
+  def initialize(message, receiver: nil, key: nil)
+    super(message)
+    @receiver = receiver
+    @key = key
+  end
+
+  def receiver
+    @receiver || ::Kernel.raise(::ArgumentError, 'no receiver is available')
+  end
+
+  def key
+    @key || ::Kernel.raise(::ArgumentError, 'no key is available')
+  end
+end
+
+module ::JS
+  class Error
+  end
+end
diff --git a/opal/corelib/error/errno.rb b/opal/corelib/error/errno.rb
new file mode 100644
index 00000000..f6eff58e
--- /dev/null
+++ b/opal/corelib/error/errno.rb
@@ -0,0 +1,47 @@
+module ::Errno
+  errors = [
+    [:EINVAL, 'Invalid argument', 22],
+    [:EEXIST, 'File exists', 17],
+    [:EISDIR, 'Is a directory', 21],
+    [:EMFILE, 'Too many open files', 24],
+    [:EACCES, 'Permission denied', 13],
+    [:EPERM, 'Operation not permitted', 1],
+    [:ENOENT, 'No such file or directory', 2]
+  ]
+
+  klass = nil
+
+  %x{
+    var i;
+    for (i = 0; i < errors.length; i++) {
+      (function() { // Create a closure
+        var class_name = errors[i][0];
+        var default_message = errors[i][1];
+        var errno = errors[i][2];
+
+        klass = Opal.klass(self, Opal.SystemCallError, class_name);
+        klass.errno = errno;
+
+        #{
+          class << klass
+            def new(name = nil)
+              message = `default_message`
+              message += " - #{name}" if name
+              super(message)
+            end
+          end
+        }
+      })();
+    }
+  }
+end
+
+class ::SystemCallError < ::StandardError
+  def errno
+    self.class.errno
+  end
+
+  class << self
+    attr_reader :errno
+  end
+end
diff --git a/opal/corelib/file.rb b/opal/corelib/file.rb
new file mode 100644
index 00000000..5684ba80
--- /dev/null
+++ b/opal/corelib/file.rb
@@ -0,0 +1,224 @@
+# helpers: truthy
+
+class ::File < ::IO
+  Separator = SEPARATOR = '/'
+  ALT_SEPARATOR = nil
+  PATH_SEPARATOR = ':'
+  # Assuming case insenstive filesystem
+  FNM_SYSCASE = 0
+  windows_root_rx = %r{^[a-zA-Z]:(?:\\|\/)}
+
+  class << self
+    def absolute_path(path, basedir = nil)
+      sep = SEPARATOR
+      sep_chars = `$sep_chars()`
+      new_parts = []
+
+      path = path.respond_to?(:to_path) ? path.to_path : path
+      path = ::Opal.coerce_to!(`path`, ::String, :to_str)
+
+      basedir ||= ::Dir.pwd
+      path_abs    = `path.substr(0, sep.length) === sep || windows_root_rx.test(path)`
+      basedir_abs = `basedir.substr(0, sep.length) === sep || windows_root_rx.test(basedir)`
+
+      if path_abs
+        parts       = path.split(/[#{sep_chars}]/)
+        leading_sep = `windows_root_rx.test(path) ? '' : #{path.sub(/^([#{sep_chars}]+).*$/, '\1')}`
+        abs         = true
+      else
+        parts       = basedir.split(/[#{sep_chars}]/) + path.split(/[#{sep_chars}]/)
+        leading_sep = `windows_root_rx.test(basedir) ? '' : #{basedir.sub(/^([#{sep_chars}]+).*$/, '\1')}`
+        abs         = basedir_abs
+      end
+
+      %x{
+        var part;
+        for (var i = 0, ii = parts.length; i < ii; i++) {
+          part = parts[i];
+
+          if (
+            (part === nil) ||
+            (part === ''  && ((new_parts.length === 0) || abs)) ||
+            (part === '.' && ((new_parts.length === 0) || abs))
+          ) {
+            continue;
+          }
+          if (part === '..') {
+            new_parts.pop();
+          } else {
+            new_parts.push(part);
+          }
+        }
+
+        if (!abs && parts[0] !== '.') {
+          #{new_parts.unshift '.'}
+        }
+      }
+
+      new_path = new_parts.join(sep)
+      new_path = leading_sep + new_path if abs
+      new_path
+    end
+
+    def expand_path(path, basedir = nil)
+      sep = SEPARATOR
+      sep_chars = `$sep_chars()`
+      if `path[0] === '~' || (basedir && basedir[0] === '~')`
+        home = Dir.home
+        ::Kernel.raise(::ArgumentError, "couldn't find HOME environment -- expanding `~'") unless home
+        leading_sep = `windows_root_rx.test(home) ? '' : #{home.sub(/^([#{sep_chars}]+).*$/, '\1')}`
+        ::Kernel.raise(::ArgumentError, 'non-absolute home') unless home.start_with?(leading_sep)
+
+        home            += sep
+        home_path_regexp = /^\~(?:#{sep}|$)/
+        path             = path.sub(home_path_regexp, home)
+        basedir          = basedir.sub(home_path_regexp, home) if basedir
+      end
+      absolute_path(path, basedir)
+    end
+
+    %x{
+      // Coerce a given path to a path string using #to_path and #to_str
+      function $coerce_to_path(path) {
+        if ($truthy(#{`path`.respond_to?(:to_path)})) {
+          path = path.$to_path();
+        }
+
+        path = #{::Opal.coerce_to!(`path`, ::String, :to_str)};
+
+        return path;
+      }
+
+      // Return a RegExp compatible char class
+      function $sep_chars() {
+        if (#{ALT_SEPARATOR} === nil) {
+          return Opal.escape_regexp(#{SEPARATOR});
+        } else {
+          return Opal.escape_regexp(#{SEPARATOR + ALT_SEPARATOR});
+        }
+      }
+    }
+
+    def dirname(path, level = 1)
+      return path if level == 0
+      ::Kernel.raise ::ArgumentError, "level can't be negative" if level < 0
+
+      sep_chars = `$sep_chars()`
+      path = `$coerce_to_path(path)`
+      %x{
+        var absolute = path.match(new RegExp(#{"^[#{sep_chars}]"})), out;
+
+        path = path.replace(new RegExp(#{"[#{sep_chars}]+$"}), ''); // remove trailing separators
+        path = path.replace(new RegExp(#{"[^#{sep_chars}]+$"}), ''); // remove trailing basename
+        path = path.replace(new RegExp(#{"[#{sep_chars}]+$"}), ''); // remove final trailing separators
+
+        if (path === '') {
+          out = absolute ? '/' : '.';
+        }
+        else {
+          out = path;
+        }
+
+        if (level == 1) {
+          return out;
+        }
+        else {
+          return #{dirname(`out`, level - 1)}
+        }
+      }
+    end
+
+    def basename(name, suffix = nil)
+      sep_chars = `$sep_chars()`
+      name = `$coerce_to_path(name)`
+      %x{
+        if (name.length == 0) {
+          return name;
+        }
+
+        if (suffix !== nil) {
+          suffix = #{::Opal.coerce_to!(suffix, ::String, :to_str)}
+        } else {
+          suffix = null;
+        }
+
+        name = name.replace(new RegExp(#{"(.)[#{sep_chars}]*$"}), '$1');
+        name = name.replace(new RegExp(#{"^(?:.*[#{sep_chars}])?([^#{sep_chars}]+)$"}), '$1');
+
+        if (suffix === ".*") {
+          name = name.replace(/\.[^\.]+$/, '');
+        } else if(suffix !== null) {
+          suffix = Opal.escape_regexp(suffix);
+          name = name.replace(new RegExp(#{"#{suffix}$"}), '');
+        }
+
+        return name;
+      }
+    end
+
+    def extname(path)
+      `path = $coerce_to_path(path)`
+      filename = basename(path)
+      return '' if filename.empty?
+      last_dot_idx = filename[1..-1].rindex('.')
+      # extension name must contains at least one character .(something)
+      last_dot_idx.nil? || last_dot_idx + 1 == filename.length - 1 ? '' : filename[(last_dot_idx + 1)..-1]
+    end
+
+    def exist?(path)
+      `Opal.modules[#{path}] != null`
+    end
+
+    def directory?(path)
+      files = []
+      %x{
+        for (var key in Opal.modules) {
+          #{files}.push(key)
+        }
+      }
+      path = path.gsub(/(^.#{SEPARATOR}+|#{SEPARATOR}+$)/)
+      file = files.find { |f| f =~ /^#{path}/ }
+      file
+    end
+
+    def join(*paths)
+      if paths.empty?
+        return ''
+      end
+      result = ''
+      paths = paths.flatten.each_with_index.map do |item, index|
+        if index == 0 && item.empty?
+          SEPARATOR
+        elsif paths.length == index + 1 && item.empty?
+          SEPARATOR
+        else
+          item
+        end
+      end
+      paths = paths.reject(&:empty?)
+      paths.each_with_index do |item, index|
+        next_item = paths[index + 1]
+        if next_item.nil?
+          result = "#{result}#{item}"
+        else
+          if item.end_with?(SEPARATOR) && next_item.start_with?(SEPARATOR)
+            item = item.sub(/#{SEPARATOR}+$/, '')
+          end
+          result = if item.end_with?(SEPARATOR) || next_item.start_with?(SEPARATOR)
+                     "#{result}#{item}"
+                   else
+                     "#{result}#{item}#{SEPARATOR}"
+                   end
+        end
+      end
+      result
+    end
+
+    def split(path)
+      path.split(SEPARATOR)
+    end
+
+    alias realpath expand_path
+    alias exists? exist?
+  end
+end
diff --git a/opal/corelib/hash.rb b/opal/corelib/hash.rb
new file mode 100644
index 00000000..f8aefd37
--- /dev/null
+++ b/opal/corelib/hash.rb
@@ -0,0 +1,1208 @@
+# helpers: yield1, hash, hash_init, hash_get, hash_put, hash_delete
+
+require 'corelib/enumerable'
+
+# ---
+# Internal properties:
+#
+# - $$map         [JS::Object<String => hash-bucket>] the hash table for ordinary keys
+# - $$smap        [JS::Object<String => hash-bucket>] the hash table for string keys
+# - $$keys        [Array<hash-bucket>] the list of all keys
+# - $$proc        [Proc,null,nil] the default proc used for missing keys
+# - hash-bucket   [JS::Object] an element of a linked list that holds hash values, keys are `{key:,key_hash:,value:,next:}`
+class ::Hash
+  include ::Enumerable
+
+  # Mark all hash instances as valid hashes (used to check keyword args, etc)
+  `self.$$prototype.$$is_hash = true`
+
+  def self.[](*argv)
+    %x{
+      var hash, argc = argv.length, i;
+
+      if (argc === 1) {
+        hash = #{::Opal.coerce_to?(argv[0], ::Hash, :to_hash)};
+        if (hash !== nil) {
+          return #{allocate.merge!(`hash`)};
+        }
+
+        argv = #{::Opal.coerce_to?(argv[0], ::Array, :to_ary)};
+        if (argv === nil) {
+          #{::Kernel.raise ::ArgumentError, 'odd number of arguments for Hash'}
+        }
+
+        argc = argv.length;
+        hash = #{allocate};
+
+        for (i = 0; i < argc; i++) {
+          if (!argv[i].$$is_array) continue;
+          switch(argv[i].length) {
+          case 1:
+            hash.$store(argv[i][0], nil);
+            break;
+          case 2:
+            hash.$store(argv[i][0], argv[i][1]);
+            break;
+          default:
+            #{::Kernel.raise ::ArgumentError, "invalid number of elements (#{`argv[i].length`} for 1..2)"}
+          }
+        }
+
+        return hash;
+      }
+
+      if (argc % 2 !== 0) {
+        #{::Kernel.raise ::ArgumentError, 'odd number of arguments for Hash'}
+      }
+
+      hash = #{allocate};
+
+      for (i = 0; i < argc; i += 2) {
+        hash.$store(argv[i], argv[i + 1]);
+      }
+
+      return hash;
+    }
+  end
+
+  def self.allocate
+    %x{
+      var hash = new self.$$constructor();
+
+      $hash_init(hash);
+
+      hash.$$none = nil;
+      hash.$$proc = nil;
+
+      return hash;
+    }
+  end
+
+  def self.try_convert(obj)
+    ::Opal.coerce_to?(obj, ::Hash, :to_hash)
+  end
+
+  def initialize(defaults = undefined, &block)
+    %x{
+      if (defaults !== undefined && block !== nil) {
+        #{::Kernel.raise ::ArgumentError, 'wrong number of arguments (1 for 0)'}
+      }
+      self.$$none = (defaults === undefined ? nil : defaults);
+      self.$$proc = block;
+
+      return self;
+    }
+  end
+
+  def ==(other)
+    %x{
+      if (self === other) {
+        return true;
+      }
+
+      if (!other.$$is_hash) {
+        return false;
+      }
+
+      if (self.$$keys.length !== other.$$keys.length) {
+        return false;
+      }
+
+      for (var i = 0, keys = self.$$keys, length = keys.length, key, value, other_value; i < length; i++) {
+        key = keys[i];
+
+        if (key.$$is_string) {
+          value = self.$$smap[key];
+          other_value = other.$$smap[key];
+        } else {
+          value = key.value;
+          other_value = $hash_get(other, key.key);
+        }
+
+        if (other_value === undefined || !value['$eql?'](other_value)) {
+          return false;
+        }
+      }
+
+      return true;
+    }
+  end
+
+  def >=(other)
+    other = ::Opal.coerce_to!(other, ::Hash, :to_hash)
+
+    %x{
+      if (self.$$keys.length < other.$$keys.length) {
+        return false
+      }
+    }
+
+    result = true
+
+    other.each do |other_key, other_val|
+      val = fetch(other_key, `null`)
+
+      %x{
+        if (val == null || val !== other_val) {
+          result = false;
+          return;
+        }
+      }
+    end
+
+    result
+  end
+
+  def >(other)
+    other = ::Opal.coerce_to!(other, ::Hash, :to_hash)
+
+    %x{
+      if (self.$$keys.length <= other.$$keys.length) {
+        return false
+      }
+    }
+
+    self >= other
+  end
+
+  def <(other)
+    other = ::Opal.coerce_to!(other, ::Hash, :to_hash)
+    other > self
+  end
+
+  def <=(other)
+    other = ::Opal.coerce_to!(other, ::Hash, :to_hash)
+    other >= self
+  end
+
+  def [](key)
+    %x{
+      var value = $hash_get(self, key);
+
+      if (value !== undefined) {
+        return value;
+      }
+
+      return self.$default(key);
+    }
+  end
+
+  def []=(key, value)
+    %x{
+      $hash_put(self, key, value);
+      return value;
+    }
+  end
+
+  def assoc(object)
+    %x{
+      for (var i = 0, keys = self.$$keys, length = keys.length, key; i < length; i++) {
+        key = keys[i];
+
+        if (key.$$is_string) {
+          if (#{`key` == object}) {
+            return [key, self.$$smap[key]];
+          }
+        } else {
+          if (#{`key.key` == object}) {
+            return [key.key, key.value];
+          }
+        }
+      }
+
+      return nil;
+    }
+  end
+
+  def clear
+    %x{
+      $hash_init(self);
+      return self;
+    }
+  end
+
+  def clone
+    %x{
+      var hash = new self.$$class();
+
+      $hash_init(hash);
+      Opal.hash_clone(self, hash);
+
+      return hash;
+    }
+  end
+
+  def compact
+    %x{
+      var hash = $hash();
+
+      for (var i = 0, keys = self.$$keys, length = keys.length, key, value, obj; i < length; i++) {
+        key = keys[i];
+
+        if (key.$$is_string) {
+          value = self.$$smap[key];
+        } else {
+          value = key.value;
+          key = key.key;
+        }
+
+        if (value !== nil) {
+          $hash_put(hash, key, value);
+        }
+      }
+
+      return hash;
+    }
+  end
+
+  def compact!
+    %x{
+      var changes_were_made = false;
+
+      for (var i = 0, keys = self.$$keys, length = keys.length, key, value, obj; i < length; i++) {
+        key = keys[i];
+
+        if (key.$$is_string) {
+          value = self.$$smap[key];
+        } else {
+          value = key.value;
+          key = key.key;
+        }
+
+        if (value === nil) {
+          if ($hash_delete(self, key) !== undefined) {
+            changes_were_made = true;
+            length--;
+            i--;
+          }
+        }
+      }
+
+      return changes_were_made ? self : nil;
+    }
+  end
+
+  def compare_by_identity
+    %x{
+      var i, ii, key, keys = self.$$keys, identity_hash;
+
+      if (self.$$by_identity) return self;
+      if (self.$$keys.length === 0) {
+        self.$$by_identity = true
+        return self;
+      }
+
+      identity_hash = #{ {}.compare_by_identity };
+      for(i = 0, ii = keys.length; i < ii; i++) {
+        key = keys[i];
+        if (!key.$$is_string) key = key.key;
+        $hash_put(identity_hash, key, $hash_get(self, key));
+      }
+
+      self.$$by_identity = true;
+      self.$$map = identity_hash.$$map;
+      self.$$smap = identity_hash.$$smap;
+      return self;
+    }
+  end
+
+  def compare_by_identity?
+    `self.$$by_identity === true`
+  end
+
+  def default(key = undefined)
+    %x{
+      if (key !== undefined && self.$$proc !== nil && self.$$proc !== undefined) {
+        return self.$$proc.$call(self, key);
+      }
+      if (self.$$none === undefined) {
+        return nil;
+      }
+      return self.$$none;
+    }
+  end
+
+  def default=(object)
+    %x{
+      self.$$proc = nil;
+      self.$$none = object;
+
+      return object;
+    }
+  end
+
+  def default_proc
+    %x{
+      if (self.$$proc !== undefined) {
+        return self.$$proc;
+      }
+      return nil;
+    }
+  end
+
+  def default_proc=(default_proc)
+    %x{
+      var proc = default_proc;
+
+      if (proc !== nil) {
+        proc = #{::Opal.coerce_to!(`proc`, ::Proc, :to_proc)};
+
+        if (#{`proc`.lambda?} && #{`proc`.arity.abs} !== 2) {
+          #{::Kernel.raise ::TypeError, 'default_proc takes two arguments'};
+        }
+      }
+
+      self.$$none = nil;
+      self.$$proc = proc;
+
+      return default_proc;
+    }
+  end
+
+  def delete(key, &block)
+    %x{
+      var value = $hash_delete(self, key);
+
+      if (value !== undefined) {
+        return value;
+      }
+
+      if (block !== nil) {
+        return #{yield key};
+      }
+
+      return nil;
+    }
+  end
+
+  def delete_if(&block)
+    return enum_for(:delete_if) { size } unless block
+
+    %x{
+      for (var i = 0, keys = self.$$keys, length = keys.length, key, value, obj; i < length; i++) {
+        key = keys[i];
+
+        if (key.$$is_string) {
+          value = self.$$smap[key];
+        } else {
+          value = key.value;
+          key = key.key;
+        }
+
+        obj = block(key, value);
+
+        if (obj !== false && obj !== nil) {
+          if ($hash_delete(self, key) !== undefined) {
+            length--;
+            i--;
+          }
+        }
+      }
+
+      return self;
+    }
+  end
+
+  def dig(key, *keys)
+    item = self[key]
+
+    %x{
+      if (item === nil || keys.length === 0) {
+        return item;
+      }
+    }
+
+    unless item.respond_to?(:dig)
+      ::Kernel.raise ::TypeError, "#{item.class} does not have #dig method"
+    end
+
+    item.dig(*keys)
+  end
+
+  def each(&block)
+    return enum_for(:each) { size } unless block
+
+    %x{
+      for (var i = 0, keys = self.$$keys.slice(), length = keys.length, key, value; i < length; i++) {
+        key = keys[i];
+
+        if (key.$$is_string) {
+          value = self.$$smap[key];
+        } else {
+          value = key.value;
+          key = key.key;
+        }
+
+        $yield1(block, [key, value]);
+      }
+
+      return self;
+    }
+  end
+
+  def each_key(&block)
+    return enum_for(:each_key) { size } unless block
+
+    %x{
+      for (var i = 0, keys = self.$$keys.slice(), length = keys.length, key; i < length; i++) {
+        key = keys[i];
+
+        block(key.$$is_string ? key : key.key);
+      }
+
+      return self;
+    }
+  end
+
+  def each_value(&block)
+    return enum_for(:each_value) { size } unless block
+
+    %x{
+      for (var i = 0, keys = self.$$keys, length = keys.length, key; i < length; i++) {
+        key = keys[i];
+
+        block(key.$$is_string ? self.$$smap[key] : key.value);
+      }
+
+      return self;
+    }
+  end
+
+  def empty?
+    `self.$$keys.length === 0`
+  end
+
+  def except(*keys)
+    dup.except!(*keys)
+  end
+
+  def except!(*keys)
+    keys.each { |key| delete(key) }
+    self
+  end
+
+  def fetch(key, defaults = undefined, &block)
+    %x{
+      var value = $hash_get(self, key);
+
+      if (value !== undefined) {
+        return value;
+      }
+
+      if (block !== nil) {
+        return block(key);
+      }
+
+      if (defaults !== undefined) {
+        return defaults;
+      }
+    }
+
+    ::Kernel.raise ::KeyError.new("key not found: #{key.inspect}", key: key, receiver: self)
+  end
+
+  def fetch_values(*keys, &block)
+    keys.map { |key| fetch(key, &block) }
+  end
+
+  def flatten(level = 1)
+    level = ::Opal.coerce_to!(level, ::Integer, :to_int)
+
+    %x{
+      var result = [];
+
+      for (var i = 0, keys = self.$$keys, length = keys.length, key, value; i < length; i++) {
+        key = keys[i];
+
+        if (key.$$is_string) {
+          value = self.$$smap[key];
+        } else {
+          value = key.value;
+          key = key.key;
+        }
+
+        result.push(key);
+
+        if (value.$$is_array) {
+          if (level === 1) {
+            result.push(value);
+            continue;
+          }
+
+          result = result.concat(#{`value`.flatten(`level - 2`)});
+          continue;
+        }
+
+        result.push(value);
+      }
+
+      return result;
+    }
+  end
+
+  def has_key?(key)
+    `$hash_get(self, key) !== undefined`
+  end
+
+  def has_value?(value)
+    %x{
+      for (var i = 0, keys = self.$$keys, length = keys.length, key; i < length; i++) {
+        key = keys[i];
+
+        if (#{`(key.$$is_string ? self.$$smap[key] : key.value)` == value}) {
+          return true;
+        }
+      }
+
+      return false;
+    }
+  end
+
+  def hash
+    %x{
+      var top = (Opal.hash_ids === undefined),
+          hash_id = self.$object_id(),
+          result = ['Hash'],
+          key, item;
+
+      try {
+        if (top) {
+          Opal.hash_ids = Object.create(null);
+        }
+
+        if (Opal[hash_id]) {
+          return 'self';
+        }
+
+        for (key in Opal.hash_ids) {
+          item = Opal.hash_ids[key];
+          if (#{eql?(`item`)}) {
+            return 'self';
+          }
+        }
+
+        Opal.hash_ids[hash_id] = self;
+
+        for (var i = 0, keys = self.$$keys, length = keys.length; i < length; i++) {
+          key = keys[i];
+
+          if (key.$$is_string) {
+            result.push([key, self.$$smap[key].$hash()]);
+          } else {
+            result.push([key.key_hash, key.value.$hash()]);
+          }
+        }
+
+        return result.sort().join();
+
+      } finally {
+        if (top) {
+          Opal.hash_ids = undefined;
+        }
+      }
+    }
+  end
+
+  def index(object)
+    %x{
+      for (var i = 0, keys = self.$$keys, length = keys.length, key, value; i < length; i++) {
+        key = keys[i];
+
+        if (key.$$is_string) {
+          value = self.$$smap[key];
+        } else {
+          value = key.value;
+          key = key.key;
+        }
+
+        if (#{`value` == object}) {
+          return key;
+        }
+      }
+
+      return nil;
+    }
+  end
+
+  def indexes(*args)
+    %x{
+      var result = [];
+
+      for (var i = 0, length = args.length, key, value; i < length; i++) {
+        key = args[i];
+        value = $hash_get(self, key);
+
+        if (value === undefined) {
+          result.push(#{default});
+          continue;
+        }
+
+        result.push(value);
+      }
+
+      return result;
+    }
+  end
+
+  `var inspect_ids`
+
+  def inspect
+    %x{
+      var top = (inspect_ids === undefined),
+          hash_id = self.$object_id(),
+          result = [];
+    }
+
+    begin
+      %x{
+        if (top) {
+          inspect_ids = {};
+        }
+
+        if (inspect_ids.hasOwnProperty(hash_id)) {
+          return '{...}';
+        }
+
+        inspect_ids[hash_id] = true;
+
+        for (var i = 0, keys = self.$$keys, length = keys.length, key, value; i < length; i++) {
+          key = keys[i];
+
+          if (key.$$is_string) {
+            value = self.$$smap[key];
+          } else {
+            value = key.value;
+            key = key.key;
+          }
+
+          key = #{Opal.inspect(`key`)}
+          value = #{Opal.inspect(`value`)}
+
+          result.push(key + '=>' + value);
+        }
+
+        return '{' + result.join(', ') + '}';
+      }
+      nil
+    ensure
+      `if (top) inspect_ids = undefined`
+    end
+  end
+
+  def invert
+    %x{
+      var hash = $hash();
+
+      for (var i = 0, keys = self.$$keys, length = keys.length, key, value; i < length; i++) {
+        key = keys[i];
+
+        if (key.$$is_string) {
+          value = self.$$smap[key];
+        } else {
+          value = key.value;
+          key = key.key;
+        }
+
+        $hash_put(hash, value, key);
+      }
+
+      return hash;
+    }
+  end
+
+  def keep_if(&block)
+    return enum_for(:keep_if) { size } unless block
+
+    %x{
+      for (var i = 0, keys = self.$$keys, length = keys.length, key, value, obj; i < length; i++) {
+        key = keys[i];
+
+        if (key.$$is_string) {
+          value = self.$$smap[key];
+        } else {
+          value = key.value;
+          key = key.key;
+        }
+
+        obj = block(key, value);
+
+        if (obj === false || obj === nil) {
+          if ($hash_delete(self, key) !== undefined) {
+            length--;
+            i--;
+          }
+        }
+      }
+
+      return self;
+    }
+  end
+
+  def keys
+    %x{
+      var result = [];
+
+      for (var i = 0, keys = self.$$keys, length = keys.length, key; i < length; i++) {
+        key = keys[i];
+
+        if (key.$$is_string) {
+          result.push(key);
+        } else {
+          result.push(key.key);
+        }
+      }
+
+      return result;
+    }
+  end
+
+  def length
+    `self.$$keys.length`
+  end
+
+  def merge(*others, &block)
+    dup.merge!(*others, &block)
+  end
+
+  def merge!(*others, &block)
+    %x{
+      var i, j, other, other_keys, length, key, value, other_value;
+      for (i = 0; i < others.length; ++i) {
+        other = #{::Opal.coerce_to!(`others[i]`, ::Hash, :to_hash)};
+        other_keys = other.$$keys, length = other_keys.length;
+
+        if (block === nil) {
+          for (j = 0; j < length; j++) {
+            key = other_keys[j];
+
+            if (key.$$is_string) {
+              other_value = other.$$smap[key];
+            } else {
+              other_value = key.value;
+              key = key.key;
+            }
+
+            $hash_put(self, key, other_value);
+          }
+        } else {
+          for (j = 0; j < length; j++) {
+            key = other_keys[j];
+
+            if (key.$$is_string) {
+              other_value = other.$$smap[key];
+            } else {
+              other_value = key.value;
+              key = key.key;
+            }
+
+            value = $hash_get(self, key);
+
+            if (value === undefined) {
+              $hash_put(self, key, other_value);
+              continue;
+            }
+
+            $hash_put(self, key, block(key, value, other_value));
+          }
+        }
+      }
+
+      return self;
+    }
+  end
+
+  def rassoc(object)
+    %x{
+      for (var i = 0, keys = self.$$keys, length = keys.length, key, value; i < length; i++) {
+        key = keys[i];
+
+        if (key.$$is_string) {
+          value = self.$$smap[key];
+        } else {
+          value = key.value;
+          key = key.key;
+        }
+
+        if (#{`value` == object}) {
+          return [key, value];
+        }
+      }
+
+      return nil;
+    }
+  end
+
+  def rehash
+    %x{
+      Opal.hash_rehash(self);
+      return self;
+    }
+  end
+
+  def reject(&block)
+    return enum_for(:reject) { size } unless block
+
+    %x{
+      var hash = $hash();
+
+      for (var i = 0, keys = self.$$keys, length = keys.length, key, value, obj; i < length; i++) {
+        key = keys[i];
+
+        if (key.$$is_string) {
+          value = self.$$smap[key];
+        } else {
+          value = key.value;
+          key = key.key;
+        }
+
+        obj = block(key, value);
+
+        if (obj === false || obj === nil) {
+          $hash_put(hash, key, value);
+        }
+      }
+
+      return hash;
+    }
+  end
+
+  def reject!(&block)
+    return enum_for(:reject!) { size } unless block
+
+    %x{
+      var changes_were_made = false;
+
+      for (var i = 0, keys = self.$$keys, length = keys.length, key, value, obj; i < length; i++) {
+        key = keys[i];
+
+        if (key.$$is_string) {
+          value = self.$$smap[key];
+        } else {
+          value = key.value;
+          key = key.key;
+        }
+
+        obj = block(key, value);
+
+        if (obj !== false && obj !== nil) {
+          if ($hash_delete(self, key) !== undefined) {
+            changes_were_made = true;
+            length--;
+            i--;
+          }
+        }
+      }
+
+      return changes_were_made ? self : nil;
+    }
+  end
+
+  def replace(other)
+    other = ::Opal.coerce_to!(other, ::Hash, :to_hash)
+
+    %x{
+      $hash_init(self);
+
+      for (var i = 0, other_keys = other.$$keys, length = other_keys.length, key, value, other_value; i < length; i++) {
+        key = other_keys[i];
+
+        if (key.$$is_string) {
+          other_value = other.$$smap[key];
+        } else {
+          other_value = key.value;
+          key = key.key;
+        }
+
+        $hash_put(self, key, other_value);
+      }
+    }
+
+    if other.default_proc
+      self.default_proc = other.default_proc
+    else
+      self.default = other.default
+    end
+
+    self
+  end
+
+  def select(&block)
+    return enum_for(:select) { size } unless block
+
+    %x{
+      var hash = $hash();
+
+      for (var i = 0, keys = self.$$keys, length = keys.length, key, value, obj; i < length; i++) {
+        key = keys[i];
+
+        if (key.$$is_string) {
+          value = self.$$smap[key];
+        } else {
+          value = key.value;
+          key = key.key;
+        }
+
+        obj = block(key, value);
+
+        if (obj !== false && obj !== nil) {
+          $hash_put(hash, key, value);
+        }
+      }
+
+      return hash;
+    }
+  end
+
+  def select!(&block)
+    return enum_for(:select!) { size } unless block
+
+    %x{
+      var result = nil;
+
+      for (var i = 0, keys = self.$$keys, length = keys.length, key, value, obj; i < length; i++) {
+        key = keys[i];
+
+        if (key.$$is_string) {
+          value = self.$$smap[key];
+        } else {
+          value = key.value;
+          key = key.key;
+        }
+
+        obj = block(key, value);
+
+        if (obj === false || obj === nil) {
+          if ($hash_delete(self, key) !== undefined) {
+            length--;
+            i--;
+          }
+          result = self;
+        }
+      }
+
+      return result;
+    }
+  end
+
+  def shift
+    %x{
+      var keys = self.$$keys,
+          key;
+
+      if (keys.length > 0) {
+        key = keys[0];
+
+        key = key.$$is_string ? key : key.key;
+
+        return [key, $hash_delete(self, key)];
+      }
+
+      return self.$default(nil);
+    }
+  end
+
+  def slice(*keys)
+    %x{
+      var result = $hash();
+
+      for (var i = 0, length = keys.length; i < length; i++) {
+        var key = keys[i], value = $hash_get(self, key);
+
+        if (value !== undefined) {
+          $hash_put(result, key, value);
+        }
+      }
+
+      return result;
+    }
+  end
+
+  def to_a
+    %x{
+      var result = [];
+
+      for (var i = 0, keys = self.$$keys, length = keys.length, key, value; i < length; i++) {
+        key = keys[i];
+
+        if (key.$$is_string) {
+          value = self.$$smap[key];
+        } else {
+          value = key.value;
+          key = key.key;
+        }
+
+        result.push([key, value]);
+      }
+
+      return result;
+    }
+  end
+
+  def to_h(&block)
+    return map(&block).to_h if block_given?
+
+    %x{
+      if (self.$$class === Opal.Hash) {
+        return self;
+      }
+
+      var hash = new Opal.Hash();
+
+      $hash_init(hash);
+      Opal.hash_clone(self, hash);
+
+      return hash;
+    }
+  end
+
+  def to_hash
+    self
+  end
+
+  def to_proc
+    proc do |key = undefined|
+      %x{
+        if (key == null) {
+          #{::Kernel.raise ::ArgumentError, 'no key given'}
+        }
+      }
+
+      self[key]
+    end
+  end
+
+  def transform_keys(&block)
+    return enum_for(:transform_keys) { size } unless block
+
+    %x{
+      var result = $hash();
+
+      for (var i = 0, keys = self.$$keys, length = keys.length, key, value; i < length; i++) {
+        key = keys[i];
+
+        if (key.$$is_string) {
+          value = self.$$smap[key];
+        } else {
+          value = key.value;
+          key = key.key;
+        }
+
+        key = $yield1(block, key);
+
+        $hash_put(result, key, value);
+      }
+
+      return result;
+    }
+  end
+
+  def transform_keys!(&block)
+    return enum_for(:transform_keys!) { size } unless block
+
+    %x{
+      var keys = Opal.slice.call(self.$$keys),
+          i, length = keys.length, key, value, new_key;
+
+      for (i = 0; i < length; i++) {
+        key = keys[i];
+
+        if (key.$$is_string) {
+          value = self.$$smap[key];
+        } else {
+          value = key.value;
+          key = key.key;
+        }
+
+        new_key = $yield1(block, key);
+
+        $hash_delete(self, key);
+        $hash_put(self, new_key, value);
+      }
+
+      return self;
+    }
+  end
+
+  def transform_values(&block)
+    return enum_for(:transform_values) { size } unless block
+
+    %x{
+      var result = $hash();
+
+      for (var i = 0, keys = self.$$keys, length = keys.length, key, value; i < length; i++) {
+        key = keys[i];
+
+        if (key.$$is_string) {
+          value = self.$$smap[key];
+        } else {
+          value = key.value;
+          key = key.key;
+        }
+
+        value = $yield1(block, value);
+
+        $hash_put(result, key, value);
+      }
+
+      return result;
+    }
+  end
+
+  def transform_values!(&block)
+    return enum_for(:transform_values!) { size } unless block
+
+    %x{
+      for (var i = 0, keys = self.$$keys, length = keys.length, key, value; i < length; i++) {
+        key = keys[i];
+
+        if (key.$$is_string) {
+          value = self.$$smap[key];
+        } else {
+          value = key.value;
+          key = key.key;
+        }
+
+        value = $yield1(block, value);
+
+        $hash_put(self, key, value);
+      }
+
+      return self;
+    }
+  end
+
+  def values
+    %x{
+      var result = [];
+
+      for (var i = 0, keys = self.$$keys, length = keys.length, key; i < length; i++) {
+        key = keys[i];
+
+        if (key.$$is_string) {
+          result.push(self.$$smap[key]);
+        } else {
+          result.push(key.value);
+        }
+      }
+
+      return result;
+    }
+  end
+
+  alias dup clone
+  alias each_pair each
+  alias eql? ==
+  alias filter select
+  alias filter! select!
+  alias include? has_key?
+  alias indices indexes
+  alias key index
+  alias key? has_key?
+  alias member? has_key?
+  alias size length
+  alias store []=
+  alias to_s inspect
+  alias update merge!
+  alias value? has_value?
+  alias values_at indexes
+end
diff --git a/opal/corelib/helpers.rb b/opal/corelib/helpers.rb
new file mode 100644
index 00000000..d57d013c
--- /dev/null
+++ b/opal/corelib/helpers.rb
@@ -0,0 +1,206 @@
+# helpers: type_error, coerce_to
+
+module ::Opal
+  def self.bridge(constructor, klass)
+    `Opal.bridge(constructor, klass)`
+  end
+
+  def self.coerce_to!(object, type, method, *args)
+    coerced = `$coerce_to(object, type, method, args)`
+
+    unless type === coerced
+      ::Kernel.raise `$type_error(object, type, method, coerced)`
+    end
+
+    coerced
+  end
+
+  def self.coerce_to?(object, type, method, *args)
+    return unless object.respond_to? method
+
+    coerced = `$coerce_to(object, type, method, args)`
+
+    return if coerced.nil?
+
+    unless type === coerced
+      ::Kernel.raise `$type_error(object, type, method, coerced)`
+    end
+
+    coerced
+  end
+
+  def self.try_convert(object, type, method)
+    return object if type === object
+
+    if object.respond_to? method
+      object.__send__ method
+    end
+  end
+
+  def self.compare(a, b)
+    compare = a <=> b
+
+    if `compare === nil`
+      ::Kernel.raise ::ArgumentError, "comparison of #{a.class} with #{b.class} failed"
+    end
+
+    compare
+  end
+
+  def self.destructure(args)
+    %x{
+      if (args.length == 1) {
+        return args[0];
+      }
+      else if (args.$$is_array) {
+        return args;
+      }
+      else {
+        var args_ary = new Array(args.length);
+        for(var i = 0, l = args_ary.length; i < l; i++) { args_ary[i] = args[i]; }
+
+        return args_ary;
+      }
+    }
+  end
+
+  def self.respond_to?(obj, method, include_all = false)
+    %x{
+      if (obj == null || !obj.$$class) {
+        return false;
+      }
+    }
+
+    obj.respond_to?(method, include_all)
+  end
+
+  def self.instance_variable_name!(name)
+    name = ::Opal.coerce_to!(name, ::String, :to_str)
+
+    unless `/^@[a-zA-Z_][a-zA-Z0-9_]*?$/.test(name)`
+      ::Kernel.raise ::NameError.new("'#{name}' is not allowed as an instance variable name", name)
+    end
+
+    name
+  end
+
+  def self.class_variable_name!(name)
+    name = ::Opal.coerce_to!(name, ::String, :to_str)
+
+    if `name.length < 3 || name.slice(0,2) !== '@@'`
+      ::Kernel.raise ::NameError.new("`#{name}' is not allowed as a class variable name", name)
+    end
+
+    name
+  end
+
+  def self.const_name?(const_name)
+    %x{
+      if (typeof const_name !== 'string') {
+        #{const_name = ::Opal.coerce_to!(const_name, ::String, :to_str)}
+      }
+
+      return #{const_name}[0] === #{const_name}[0].toUpperCase()
+    }
+  end
+
+  def self.const_name!(const_name)
+    const_name = ::Opal.coerce_to!(const_name, ::String, :to_str) if defined? ::String
+
+    %x{
+      if (!const_name || const_name[0] != const_name[0].toUpperCase()) {
+        #{raise ::NameError, "wrong constant name #{const_name}"}
+      }
+    }
+
+    const_name
+  end
+
+  # @private
+  # Mark some methods as pristine in order to apply optimizations when they
+  # are still in their original form. This could probably be moved to
+  # the `Opal.def()` JS API, but for now it will stay manual.
+  #
+  # @example
+  #
+  #   Opal.pristine Array, :allocate, :copy_instance_variables, :initialize_dup
+  #
+  #   class Array
+  #     def dup
+  #       %x{
+  #         if (
+  #           self.$allocate.$$pristine &&
+  #           self.$copy_instance_variables.$$pristine &&
+  #           self.$initialize_dup.$$pristine
+  #         ) return self.slice(0);
+  #       }
+  #
+  #       super
+  #     end
+  #   end
+  #
+  # @param owner_class [Class] the class owning the methods
+  # @param method_names [Array<Symbol>] the list of methods names to mark
+  # @return [nil]
+  def self.pristine(owner_class, *method_names)
+    %x{
+      var method_name, method;
+      for (var i = method_names.length - 1; i >= 0; i--) {
+        method_name = method_names[i];
+        method = owner_class.$$prototype['$'+method_name];
+
+        if (method && !method.$$stub) {
+          method.$$pristine = true;
+        }
+      }
+    }
+    nil
+  end
+
+  `var inspect_stack = []`
+
+  # Performs a safe call to inspect for any value, whether
+  # native or Opal-wrapped.
+  #
+  # @param value [Object]
+  # @return [String]
+  def self.inspect(value = undefined)
+    `var pushed = false`
+    begin
+      %x{
+        if (value === null) {
+          // JS null value
+          return 'null';
+        }
+        else if (value === undefined) {
+          // JS undefined value
+          return 'undefined';
+        }
+        else if (typeof value.$$class === 'undefined') {
+          // JS object / other value that is not bridged
+          return Object.prototype.toString.apply(value);
+        }
+        else if (typeof value.$inspect !== 'function' || value.$inspect.$$stub) {
+          // BasicObject and friends
+          return #{"#<#{`value.$$class`}:0x#{value.__id__.to_s(16)}>"}
+        }
+        else if (inspect_stack.indexOf(#{value.__id__}) !== -1) {
+          // inspect recursing inside inspect to find out about the
+          // same object
+          return #{"#<#{`value.$$class`}:0x#{value.__id__.to_s(16)}>"}
+        }
+        else {
+          // anything supporting Opal
+          inspect_stack.push(#{value.__id__});
+          pushed = true;
+          return value.$inspect();
+        }
+      }
+      nil
+    rescue ::Exception => e # rubocop:disable Lint/RescueException
+      "#<#{`value.$$class`}:0x#{value.__id__.to_s(16)}>"
+    ensure
+      `if (pushed) inspect_stack.pop()`
+    end
+  end
+end
diff --git a/opal/corelib/io.rb b/opal/corelib/io.rb
new file mode 100644
index 00000000..6b092871
--- /dev/null
+++ b/opal/corelib/io.rb
@@ -0,0 +1,311 @@
+class ::IO
+  self::SEEK_SET = 0
+  self::SEEK_CUR = 1
+  self::SEEK_END = 2
+  self::SEEK_DATA = 3
+  self::SEEK_HOLE = 4
+
+  self::READABLE = 1
+  self::WRITABLE = 4
+
+  attr_reader :eof
+
+  attr_accessor :read_proc,  :sync, :tty, :write_proc
+
+  def initialize(fd, flags = 'r')
+    @fd = fd
+    @flags = flags
+    @eof = false
+
+    if flags.include?('r') && !flags.match?(/[wa+]/)
+      @closed = :write
+    elsif flags.match?(/[wa]/) && !flags.match?(/[r+]/)
+      @closed = :read
+    end
+  end
+
+  def fileno
+    @fd
+  end
+
+  def tty?
+    `self.tty == true`
+  end
+
+  def write(string)
+    `self.write_proc(string)`
+    string.size
+  end
+
+  def flush
+    # noop
+  end
+
+  def <<(string)
+    write(string)
+    self
+  end
+
+  def print(*args)
+    %x{
+      for (var i = 0, ii = args.length; i < ii; i++) {
+        args[i] = #{::Kernel.String(`args[i]`)}
+      }
+      self.$write(args.join(#{$,}));
+    }
+    nil
+  end
+
+  def puts(*args)
+    %x{
+      var line
+      if (args.length === 0) {
+        #{write "\n"};
+        return nil;
+      } else {
+        for (var i = 0, ii = args.length; i < ii; i++) {
+          if (args[i].$$is_array){
+            var ary = #{`args[i]`.flatten}
+            if (ary.length > 0) #{puts(*`ary`)}
+          } else {
+            if (args[i].$$is_string) {
+              line = args[i].valueOf();
+            } else {
+              line = #{::Kernel.String(`args[i]`)};
+            }
+            if (!line.endsWith("\n")) line += "\n"
+            #{write `line`}
+          }
+        }
+      }
+    }
+    nil
+  end
+
+  # Reading
+
+  def getc
+    @read_buffer ||= ''
+    parts = ''
+
+    # Will execure at most twice - one time reading from a buffer
+    # second time
+    begin
+      @read_buffer += parts
+      if @read_buffer != ''
+        ret = @read_buffer[0]
+        @read_buffer = @read_buffer[1..-1]
+        return ret
+      end
+    end while parts = sysread_noraise(1)
+
+    nil
+  end
+
+  def getbyte
+    getc&.ord
+  end
+
+  def readbyte
+    readchar.ord
+  end
+
+  def readchar
+    getc || ::Kernel.raise(::EOFError, 'end of file reached')
+  end
+
+  def readline(*args)
+    gets(*args) || ::Kernel.raise(::EOFError, 'end of file reached')
+  end
+
+  def gets(sep = false, limit = nil, opts = {})
+    if `sep.$$is_number` && !limit
+      sep, limit, opts = false, sep, limit
+    end
+    if `sep.$$is_hash` && !limit && opts == {}
+      sep, limit, opts = false, nil, sep
+    elsif `limit.$$is_hash` && opts == {}
+      sep, limit, opts = sep, nil, limit
+    end
+
+    orig_sep = sep
+
+    sep = $/ if sep == false
+    sep = /\r?\n\r?\n/ if sep == ''
+    sep ||= ''
+    sep = sep.to_str unless orig_sep == ''
+
+    # Try to deduce length of a regexp
+    seplen = orig_sep == '' ? 2 : sep.length
+
+    sep = / / if sep == ' ' # WTF is this, String#split(" ") matches all whitespaces???
+
+    @read_buffer ||= ''
+    data = ''
+    ret = nil
+
+    begin
+      @read_buffer += data
+      if sep != '' && (`sep.$$is_regexp` ? @read_buffer.match?(sep) : @read_buffer.include?(sep))
+        orig_buffer = @read_buffer
+        ret, @read_buffer = @read_buffer.split(sep, 2)
+        ret += orig_buffer[ret.length, seplen] if ret != orig_buffer
+        break
+      end
+    end while data = sysread_noraise(sep == '' ? 65_536 : 1)
+
+    unless ret
+      ret, @read_buffer = (@read_buffer || ''), ''
+      ret = nil if ret == ''
+    end
+
+    if ret
+      if limit
+        ret = ret[0...limit]
+        @read_buffer = ret[limit..-1] + @read_buffer
+      end
+      ret = ret.sub(/\r?\n\z/, '') if opts[:chomp]
+      ret = ret.sub(/\A[\r\n]+/, '') if orig_sep == ''
+    end
+
+    $_ = ret if orig_sep == false
+    ret
+  end
+
+  # This method is to be overloaded, or read_proc can be changed
+  def sysread(integer)
+    `self.read_proc(integer)` || begin
+      @eof = true
+      ::Kernel.raise ::EOFError, 'end of file reached'
+    end
+  end
+
+  # @private
+  def sysread_noraise(integer)
+    sysread(integer)
+  rescue ::EOFError
+    nil
+  end
+
+  def readpartial(integer)
+    @read_buffer ||= ''
+    part = sysread(integer)
+    ret, @read_buffer = @read_buffer + (part || ''), ''
+    ret = nil if ret == ''
+    ret
+  end
+
+  def read(integer = nil)
+    @read_buffer ||= ''
+    parts = ''
+    ret = nil
+
+    begin
+      @read_buffer += parts
+      if integer && @read_buffer.length > integer
+        ret, @read_buffer = @read_buffer[0...integer], @read_buffer[integer..-1]
+        return ret
+      end
+    end while parts = sysread_noraise(integer || 65_536)
+
+    ret, @read_buffer = @read_buffer, ''
+    ret
+  end
+
+  # Eaches
+
+  def readlines(separator = $/)
+    each_line(separator).to_a
+  end
+
+  def each(sep = $/, *args, &block)
+    return enum_for :each, sep, *args unless block_given?
+
+    while (s = gets(sep, *args))
+      yield(s)
+    end
+
+    self
+  end
+
+  def each_byte(&block)
+    return enum_for :each_byte unless block_given?
+
+    while (s = getbyte)
+      yield(s)
+    end
+
+    self
+  end
+
+  def each_char(&block)
+    return enum_for :each_char unless block_given?
+
+    while (s = getc)
+      yield(s)
+    end
+
+    self
+  end
+
+  # Closedness
+
+  def close
+    @closed = :both
+  end
+
+  def close_read
+    if @closed == :write
+      @closed = :both
+    else
+      @closed = :read
+    end
+  end
+
+  def close_write
+    if @closed == :read
+      @closed = :both
+    else
+      @closed = :write
+    end
+  end
+
+  def closed?
+    @closed == :both
+  end
+
+  def closed_read?
+    @closed == :read || @closed == :both
+  end
+
+  def closed_write?
+    @closed == :write || @closed == :both
+  end
+
+  # @private
+  def check_writable
+    if closed_write?
+      ::Kernel.raise ::IOError, 'not opened for writing'
+    end
+  end
+
+  # @private
+  def check_readable
+    if closed_read?
+      ::Kernel.raise ::IOError, 'not opened for reading'
+    end
+  end
+
+  alias each_line each
+  alias eof? eof
+end
+
+::STDIN  = $stdin  = ::IO.new(0, 'r')
+::STDOUT = $stdout = ::IO.new(1, 'w')
+::STDERR = $stderr = ::IO.new(2, 'w')
+
+`var console = Opal.global.console`
+::STDOUT.write_proc = `typeof(process) === 'object' && typeof(process.stdout) === 'object' ? function(s){process.stdout.write(s)} : function(s){console.log(s)}`
+::STDERR.write_proc = `typeof(process) === 'object' && typeof(process.stderr) === 'object' ? function(s){process.stderr.write(s)} : function(s){console.warn(s)}`
+
+::STDIN.read_proc = `function(s) { var p = prompt(); if (p !== null) return p + "\n"; return nil; }`
diff --git a/opal/corelib/kernel.rb b/opal/corelib/kernel.rb
new file mode 100644
index 00000000..e03d2261
--- /dev/null
+++ b/opal/corelib/kernel.rb
@@ -0,0 +1,758 @@
+# helpers: truthy, coerce_to, respond_to, Opal
+# use_strict: true
+
+module ::Kernel
+  def =~(obj)
+    false
+  end
+
+  def !~(obj)
+    !(self =~ obj)
+  end
+
+  def ===(other)
+    object_id == other.object_id || self == other
+  end
+
+  def <=>(other)
+    %x{
+      // set guard for infinite recursion
+      self.$$comparable = true;
+
+      var x = #{self == other};
+
+      if (x && x !== nil) {
+        return 0;
+      }
+
+      return nil;
+    }
+  end
+
+  def method(name)
+    %x{
+      var meth = self['$' + name];
+
+      if (!meth || meth.$$stub) {
+        #{::Kernel.raise ::NameError.new("undefined method `#{name}' for class `#{self.class}'", name)};
+      }
+
+      return #{::Method.new(self, `meth.$$owner || #{self.class}`, `meth`, name)};
+    }
+  end
+
+  def methods(all = true)
+    %x{
+      if ($truthy(#{all})) {
+        return Opal.methods(self);
+      } else {
+        return Opal.own_methods(self);
+      }
+    }
+  end
+
+  def public_methods(all = true)
+    %x{
+      if ($truthy(#{all})) {
+        return Opal.methods(self);
+      } else {
+        return Opal.receiver_methods(self);
+      }
+    }
+  end
+
+  def Array(object)
+    %x{
+      var coerced;
+
+      if (object === nil) {
+        return [];
+      }
+
+      if (object.$$is_array) {
+        return object;
+      }
+
+      coerced = #{::Opal.coerce_to?(object, ::Array, :to_ary)};
+      if (coerced !== nil) { return coerced; }
+
+      coerced = #{::Opal.coerce_to?(object, ::Array, :to_a)};
+      if (coerced !== nil) { return coerced; }
+
+      return [object];
+    }
+  end
+
+  def at_exit(&block)
+    $__at_exit__ ||= []
+    $__at_exit__ << block
+    block
+  end
+
+  def caller(start = 1, length = nil)
+    %x{
+      var stack, result;
+
+      stack = new Error().$backtrace();
+      result = [];
+
+      for (var i = #{start} + 1, ii = stack.length; i < ii; i++) {
+        if (!stack[i].match(/runtime\.js/)) {
+          result.push(stack[i]);
+        }
+      }
+      if (length != nil) result = result.slice(0, length);
+      return result;
+    }
+  end
+
+  def class
+    `self.$$class`
+  end
+
+  def copy_instance_variables(other)
+    %x{
+      var keys = Object.keys(other), i, ii, name;
+      for (i = 0, ii = keys.length; i < ii; i++) {
+        name = keys[i];
+        if (name.charAt(0) !== '$' && other.hasOwnProperty(name)) {
+          self[name] = other[name];
+        }
+      }
+    }
+  end
+
+  def copy_singleton_methods(other)
+    %x{
+      var i, name, names, length;
+
+      if (other.hasOwnProperty('$$meta')) {
+        var other_singleton_class = Opal.get_singleton_class(other);
+        var self_singleton_class = Opal.get_singleton_class(self);
+        names = Object.getOwnPropertyNames(other_singleton_class.$$prototype);
+
+        for (i = 0, length = names.length; i < length; i++) {
+          name = names[i];
+          if (Opal.is_method(name)) {
+            self_singleton_class.$$prototype[name] = other_singleton_class.$$prototype[name];
+          }
+        }
+
+        self_singleton_class.$$const = Object.assign({}, other_singleton_class.$$const);
+        Object.setPrototypeOf(
+          self_singleton_class.$$prototype,
+          Object.getPrototypeOf(other_singleton_class.$$prototype)
+        );
+      }
+
+      for (i = 0, names = Object.getOwnPropertyNames(other), length = names.length; i < length; i++) {
+        name = names[i];
+        if (name.charAt(0) === '$' && name.charAt(1) !== '$' && other.hasOwnProperty(name)) {
+          self[name] = other[name];
+        }
+      }
+    }
+  end
+
+  def clone(freeze: true)
+    copy = self.class.allocate
+
+    copy.copy_instance_variables(self)
+    copy.copy_singleton_methods(self)
+    copy.initialize_clone(self)
+
+    copy
+  end
+
+  def initialize_clone(other)
+    initialize_copy(other)
+  end
+
+  def define_singleton_method(name, method = undefined, &block)
+    singleton_class.define_method(name, method, &block)
+  end
+
+  def dup
+    copy = self.class.allocate
+
+    copy.copy_instance_variables(self)
+    copy.initialize_dup(self)
+
+    copy
+  end
+
+  def initialize_dup(other)
+    initialize_copy(other)
+  end
+
+  def enum_for(method = :each, *args, &block)
+    ::Enumerator.for(self, method, *args, &block)
+  end
+
+  def equal?(other)
+    `self === other`
+  end
+
+  def exit(status = true)
+    $__at_exit__ ||= []
+
+    until $__at_exit__.empty?
+      block = $__at_exit__.pop
+      block.call
+    end
+
+    %x{
+      if (status.$$is_boolean) {
+        status = status ? 0 : 1;
+      } else {
+        status = $coerce_to(status, #{::Integer}, 'to_int')
+      }
+
+      Opal.exit(status);
+    }
+    nil
+  end
+
+  def extend(*mods)
+    %x{
+      var singleton = #{singleton_class};
+
+      for (var i = mods.length - 1; i >= 0; i--) {
+        var mod = mods[i];
+
+        if (!mod.$$is_module) {
+          #{::Kernel.raise ::TypeError, "wrong argument type #{`mod`.class} (expected Module)"};
+        }
+
+        #{`mod`.append_features `singleton`};
+        #{`mod`.extend_object self};
+        #{`mod`.extended self};
+      }
+    }
+
+    self
+  end
+
+  def gets(*args)
+    $stdin.gets(*args)
+  end
+
+  def hash
+    __id__
+  end
+
+  def initialize_copy(other)
+  end
+
+  `var inspect_stack = []`
+
+  def inspect
+    ivs = ''
+    id = __id__
+    if `inspect_stack`.include? id
+      ivs = ' ...'
+    else
+      `inspect_stack` << id
+      pushed = true
+      instance_variables.each do |i|
+        ivar = instance_variable_get(i)
+        inspect = Opal.inspect(ivar)
+        ivs += " #{i}=#{inspect}"
+      end
+    end
+    "#<#{self.class}:0x#{id.to_s(16)}#{ivs}>"
+  rescue => e
+    "#<#{self.class}:0x#{id.to_s(16)}>"
+  ensure
+    `inspect_stack`.pop if pushed
+  end
+
+  def instance_of?(klass)
+    %x{
+      if (!klass.$$is_class && !klass.$$is_module) {
+        #{::Kernel.raise ::TypeError, 'class or module required'};
+      }
+
+      return self.$$class === klass;
+    }
+  end
+
+  def instance_variable_defined?(name)
+    name = ::Opal.instance_variable_name!(name)
+
+    `Opal.hasOwnProperty.call(self, name.substr(1))`
+  end
+
+  def instance_variable_get(name)
+    name = ::Opal.instance_variable_name!(name)
+
+    %x{
+      var ivar = self[Opal.ivar(name.substr(1))];
+
+      return ivar == null ? nil : ivar;
+    }
+  end
+
+  def instance_variable_set(name, value)
+    name = ::Opal.instance_variable_name!(name)
+
+    `self[Opal.ivar(name.substr(1))] = value`
+  end
+
+  def remove_instance_variable(name)
+    name = ::Opal.instance_variable_name!(name)
+
+    %x{
+      var key = Opal.ivar(name.substr(1)),
+          val;
+      if (self.hasOwnProperty(key)) {
+        val = self[key];
+        delete self[key];
+        return val;
+      }
+    }
+
+    ::Kernel.raise ::NameError, "instance variable #{name} not defined"
+  end
+
+  def instance_variables
+    %x{
+      var result = [], ivar;
+
+      for (var name in self) {
+        if (self.hasOwnProperty(name) && name.charAt(0) !== '$') {
+          if (name.substr(-1) === '$') {
+            ivar = name.slice(0, name.length - 1);
+          } else {
+            ivar = name;
+          }
+          result.push('@' + ivar);
+        }
+      }
+
+      return result;
+    }
+  end
+
+  def Integer(value, base = undefined)
+    %x{
+      var i, str, base_digits;
+
+      if (!value.$$is_string) {
+        if (base !== undefined) {
+          #{::Kernel.raise ::ArgumentError, 'base specified for non string value'}
+        }
+        if (value === nil) {
+          #{::Kernel.raise ::TypeError, "can't convert nil into Integer"}
+        }
+        if (value.$$is_number) {
+          if (value === Infinity || value === -Infinity || isNaN(value)) {
+            #{::Kernel.raise ::FloatDomainError, value}
+          }
+          return Math.floor(value);
+        }
+        if (#{value.respond_to?(:to_int)}) {
+          i = #{value.to_int};
+          if (i !== nil) {
+            return i;
+          }
+        }
+        return #{::Opal.coerce_to!(value, ::Integer, :to_i)};
+      }
+
+      if (value === "0") {
+        return 0;
+      }
+
+      if (base === undefined) {
+        base = 0;
+      } else {
+        base = $coerce_to(base, #{::Integer}, 'to_int');
+        if (base === 1 || base < 0 || base > 36) {
+          #{::Kernel.raise ::ArgumentError, "invalid radix #{base}"}
+        }
+      }
+
+      str = value.toLowerCase();
+
+      str = str.replace(/(\d)_(?=\d)/g, '$1');
+
+      str = str.replace(/^(\s*[+-]?)(0[bodx]?)/, function (_, head, flag) {
+        switch (flag) {
+        case '0b':
+          if (base === 0 || base === 2) {
+            base = 2;
+            return head;
+          }
+          // no-break
+        case '0':
+        case '0o':
+          if (base === 0 || base === 8) {
+            base = 8;
+            return head;
+          }
+          // no-break
+        case '0d':
+          if (base === 0 || base === 10) {
+            base = 10;
+            return head;
+          }
+          // no-break
+        case '0x':
+          if (base === 0 || base === 16) {
+            base = 16;
+            return head;
+          }
+          // no-break
+        }
+        #{::Kernel.raise ::ArgumentError, "invalid value for Integer(): \"#{value}\""}
+      });
+
+      base = (base === 0 ? 10 : base);
+
+      base_digits = '0-' + (base <= 10 ? base - 1 : '9a-' + String.fromCharCode(97 + (base - 11)));
+
+      if (!(new RegExp('^\\s*[+-]?[' + base_digits + ']+\\s*$')).test(str)) {
+        #{::Kernel.raise ::ArgumentError, "invalid value for Integer(): \"#{value}\""}
+      }
+
+      i = parseInt(str, base);
+
+      if (isNaN(i)) {
+        #{::Kernel.raise ::ArgumentError, "invalid value for Integer(): \"#{value}\""}
+      }
+
+      return i;
+    }
+  end
+
+  def Float(value)
+    %x{
+      var str;
+
+      if (value === nil) {
+        #{::Kernel.raise ::TypeError, "can't convert nil into Float"}
+      }
+
+      if (value.$$is_string) {
+        str = value.toString();
+
+        str = str.replace(/(\d)_(?=\d)/g, '$1');
+
+        //Special case for hex strings only:
+        if (/^\s*[-+]?0[xX][0-9a-fA-F]+\s*$/.test(str)) {
+          return #{::Kernel.Integer(`str`)};
+        }
+
+        if (!/^\s*[-+]?[0-9]*\.?[0-9]+([eE][-+]?[0-9]+)?\s*$/.test(str)) {
+          #{::Kernel.raise ::ArgumentError, "invalid value for Float(): \"#{value}\""}
+        }
+
+        return parseFloat(str);
+      }
+
+      return #{::Opal.coerce_to!(value, ::Float, :to_f)};
+    }
+  end
+
+  def Hash(arg)
+    return {} if arg.nil? || arg == []
+    return arg if ::Hash === arg
+    ::Opal.coerce_to!(arg, ::Hash, :to_hash)
+  end
+
+  def is_a?(klass)
+    %x{
+      if (!klass.$$is_class && !klass.$$is_module) {
+        #{::Kernel.raise ::TypeError, 'class or module required'};
+      }
+
+      return Opal.is_a(self, klass);
+    }
+  end
+
+  def itself
+    self
+  end
+
+  def lambda(&block)
+    `Opal.lambda(block)`
+  end
+
+  def load(file)
+    file = ::Opal.coerce_to!(file, ::String, :to_str)
+    `Opal.load(#{file})`
+  end
+
+  def loop
+    return enum_for(:loop) { ::Float::INFINITY } unless block_given?
+
+    while true
+      begin
+        yield
+      rescue ::StopIteration => e
+        return e.result
+      end
+    end
+
+    self
+  end
+
+  def nil?
+    false
+  end
+
+  def printf(*args)
+    if args.any?
+      print format(*args)
+    end
+
+    nil
+  end
+
+  def proc(&block)
+    unless block
+      ::Kernel.raise ::ArgumentError, 'tried to create Proc object without a block'
+    end
+
+    `block.$$is_lambda = false`
+    block
+  end
+
+  def puts(*strs)
+    $stdout.puts(*strs)
+  end
+
+  def p(*args)
+    args.each { |obj| $stdout.puts obj.inspect }
+
+    args.length <= 1 ? args[0] : args
+  end
+
+  def print(*strs)
+    $stdout.print(*strs)
+  end
+
+  def readline(*args)
+    $stdin.readline(*args)
+  end
+
+  def warn(*strs, uplevel: nil)
+    if uplevel
+      uplevel = ::Opal.coerce_to!(uplevel, ::Integer, :to_str)
+      ::Kernel.raise ::ArgumentError, "negative level (#{uplevel})" if uplevel < 0
+      location = caller(uplevel + 1, 1).first&.split(':in `')&.first
+      location = "#{location}: " if location
+      strs = strs.map { |s| "#{location}warning: #{s}" }
+    end
+
+    $stderr.puts(*strs) unless $VERBOSE.nil? || strs.empty?
+  end
+
+  def raise(exception = undefined, string = nil, backtrace = nil)
+    %x{
+      if (exception == null && #{$!} !== nil) {
+        throw #{$!};
+      }
+      if (exception == null) {
+        exception = #{::RuntimeError.new ''};
+      }
+      else if ($respond_to(exception, '$to_str')) {
+        exception = #{::RuntimeError.new exception.to_str};
+      }
+      // using respond_to? and not an undefined check to avoid method_missing matching as true
+      else if (exception.$$is_class && $respond_to(exception, '$exception')) {
+        exception = #{exception.exception string};
+      }
+      else if (exception.$$is_exception) {
+        // exception is fine
+      }
+      else {
+        exception = #{::TypeError.new 'exception class/object expected'};
+      }
+
+      if (backtrace !== nil) {
+        exception.$set_backtrace(backtrace);
+      }
+
+      if (#{$!} !== nil) {
+        Opal.exceptions.push(#{$!});
+      }
+
+      #{$!} = exception;
+      #{$@} = #{`exception`.backtrace};
+
+      throw exception;
+    }
+  end
+
+  def rand(max = undefined)
+    %x{
+      if (max === undefined) {
+        return #{::Random::DEFAULT.rand};
+      }
+
+      if (max.$$is_number) {
+        if (max < 0) {
+          max = Math.abs(max);
+        }
+
+        if (max % 1 !== 0) {
+          max = max.$to_i();
+        }
+
+        if (max === 0) {
+          max = undefined;
+        }
+      }
+    }
+    ::Random::DEFAULT.rand(max)
+  end
+
+  def respond_to?(name, include_all = false)
+    %x{
+      var body = self['$' + name];
+
+      if (typeof(body) === "function" && !body.$$stub) {
+        return true;
+      }
+
+      if (self['$respond_to_missing?'].$$pristine === true) {
+        return false;
+      } else {
+        return #{respond_to_missing?(name, include_all)};
+      }
+    }
+  end
+
+  def respond_to_missing?(method_name, include_all = false)
+    false
+  end
+
+  ::Opal.pristine(self, :respond_to?, :respond_to_missing?)
+
+  def require(file)
+    %x{
+      // As Object.require refers to Kernel.require once Kernel has been loaded the String
+      // class may not be available yet, the coercion requires both  String and Array to be loaded.
+      if (typeof #{file} !== 'string' && Opal.String && Opal.Array) {
+        #{file = ::Opal.coerce_to!(file, ::String, :to_str) }
+      }
+      return Opal.require(#{file})
+    }
+  end
+
+  def require_relative(file)
+    ::Opal.try_convert!(file, ::String, :to_str)
+    file = ::File.expand_path ::File.join(`Opal.current_file`, '..', file)
+
+    `Opal.require(#{file})`
+  end
+
+  # `path` should be the full path to be found in registered modules (`Opal.modules`)
+  def require_tree(path, autoload: false)
+    %x{
+      var result = [];
+
+      path = #{::File.expand_path(path)}
+      path = Opal.normalize(path);
+      if (path === '.') path = '';
+      for (var name in Opal.modules) {
+        if (#{`name`.start_with?(path)}) {
+          if(!#{autoload}) {
+            result.push([name, Opal.require(name)]);
+          } else {
+            result.push([name, true]); // do nothing, delegated to a autoloading
+          }
+        }
+      }
+
+      return result;
+    }
+  end
+
+  def singleton_class
+    `Opal.get_singleton_class(self)`
+  end
+
+  def sleep(seconds = nil)
+    %x{
+      if (seconds === nil) {
+        #{::Kernel.raise ::TypeError, "can't convert NilClass into time interval"}
+      }
+      if (!seconds.$$is_number) {
+        #{::Kernel.raise ::TypeError, "can't convert #{seconds.class} into time interval"}
+      }
+      if (seconds < 0) {
+        #{::Kernel.raise ::ArgumentError, 'time interval must be positive'}
+      }
+      var get_time = Opal.global.performance ?
+        function() {return performance.now()} :
+        function() {return new Date()}
+
+      var t = get_time();
+      while (get_time() - t <= seconds * 1000);
+      return Math.round(seconds);
+    }
+  end
+
+  def srand(seed = Random.new_seed)
+    ::Random.srand(seed)
+  end
+
+  def String(str)
+    ::Opal.coerce_to?(str, ::String, :to_str) ||
+      ::Opal.coerce_to!(str, ::String, :to_s)
+  end
+
+  def tap(&block)
+    yield self
+    self
+  end
+
+  def to_proc
+    self
+  end
+
+  def to_s
+    "#<#{self.class}:0x#{__id__.to_s(16)}>"
+  end
+
+  def catch(tag = nil)
+    tag ||= ::Object.new
+    yield(tag)
+  rescue ::UncaughtThrowError => e
+    return e.value if e.tag == tag
+    ::Kernel.raise
+  end
+
+  def throw(tag, obj = nil)
+    ::Kernel.raise ::UncaughtThrowError.new(tag, obj)
+  end
+
+  # basic implementation of open, delegate to File.open
+  def open(*args, &block)
+    ::File.open(*args, &block)
+  end
+
+  def yield_self
+    return enum_for(:yield_self) { 1 } unless block_given?
+    yield self
+  end
+
+  alias fail raise
+  alias kind_of? is_a?
+  alias object_id __id__
+  alias public_send __send__
+  alias send __send__
+  alias then yield_self
+  alias to_enum enum_for
+end
+
+class ::Object
+  # Object.require has been set to runtime.js Opal.require
+  # Now we have Kernel loaded, make sure Object.require refers to Kernel.require
+  # which is what ruby does and allows for overwriting by autoloaders
+  `delete $Object.$$prototype.$require`
+  include ::Kernel
+end
diff --git a/opal/corelib/kernel/format.rb b/opal/corelib/kernel/format.rb
new file mode 100644
index 00000000..26fb6936
--- /dev/null
+++ b/opal/corelib/kernel/format.rb
@@ -0,0 +1,549 @@
+# helpers: coerce_to
+
+module ::Kernel
+  def format(format_string, *args)
+    if args.length == 1 && args[0].respond_to?(:to_ary)
+      ary = ::Opal.coerce_to?(args[0], ::Array, :to_ary)
+      args = ary.to_a unless ary.nil?
+    end
+
+    %x{
+      var result = '',
+          //used for slicing:
+          begin_slice = 0,
+          end_slice,
+          //used for iterating over the format string:
+          i,
+          len = format_string.length,
+          //used for processing field values:
+          arg,
+          str,
+          //used for processing %g and %G fields:
+          exponent,
+          //used for keeping track of width and precision:
+          width,
+          precision,
+          //used for holding temporary values:
+          tmp_num,
+          //used for processing %{} and %<> fileds:
+          hash_parameter_key,
+          closing_brace_char,
+          //used for processing %b, %B, %o, %x, and %X fields:
+          base_number,
+          base_prefix,
+          base_neg_zero_regex,
+          base_neg_zero_digit,
+          //used for processing arguments:
+          next_arg,
+          seq_arg_num = 1,
+          pos_arg_num = 0,
+          //used for keeping track of flags:
+          flags,
+          FNONE  = 0,
+          FSHARP = 1,
+          FMINUS = 2,
+          FPLUS  = 4,
+          FZERO  = 8,
+          FSPACE = 16,
+          FWIDTH = 32,
+          FPREC  = 64,
+          FPREC0 = 128;
+
+      function CHECK_FOR_FLAGS() {
+        if (flags&FWIDTH) { #{::Kernel.raise ::ArgumentError, 'flag after width'} }
+        if (flags&FPREC0) { #{::Kernel.raise ::ArgumentError, 'flag after precision'} }
+      }
+
+      function CHECK_FOR_WIDTH() {
+        if (flags&FWIDTH) { #{::Kernel.raise ::ArgumentError, 'width given twice'} }
+        if (flags&FPREC0) { #{::Kernel.raise ::ArgumentError, 'width after precision'} }
+      }
+
+      function GET_NTH_ARG(num) {
+        if (num >= args.length) { #{::Kernel.raise ::ArgumentError, 'too few arguments'} }
+        return args[num];
+      }
+
+      function GET_NEXT_ARG() {
+        switch (pos_arg_num) {
+        case -1: #{::Kernel.raise ::ArgumentError, "unnumbered(#{`seq_arg_num`}) mixed with numbered"} // raise
+        case -2: #{::Kernel.raise ::ArgumentError, "unnumbered(#{`seq_arg_num`}) mixed with named"} // raise
+        }
+        pos_arg_num = seq_arg_num++;
+        return GET_NTH_ARG(pos_arg_num - 1);
+      }
+
+      function GET_POS_ARG(num) {
+        if (pos_arg_num > 0) {
+          #{::Kernel.raise ::ArgumentError, "numbered(#{`num`}) after unnumbered(#{`pos_arg_num`})"}
+        }
+        if (pos_arg_num === -2) {
+          #{::Kernel.raise ::ArgumentError, "numbered(#{`num`}) after named"}
+        }
+        if (num < 1) {
+          #{::Kernel.raise ::ArgumentError, "invalid index - #{`num`}$"}
+        }
+        pos_arg_num = -1;
+        return GET_NTH_ARG(num - 1);
+      }
+
+      function GET_ARG() {
+        return (next_arg === undefined ? GET_NEXT_ARG() : next_arg);
+      }
+
+      function READ_NUM(label) {
+        var num, str = '';
+        for (;; i++) {
+          if (i === len) {
+            #{::Kernel.raise ::ArgumentError, 'malformed format string - %*[0-9]'}
+          }
+          if (format_string.charCodeAt(i) < 48 || format_string.charCodeAt(i) > 57) {
+            i--;
+            num = parseInt(str, 10) || 0;
+            if (num > 2147483647) {
+              #{::Kernel.raise ::ArgumentError, "#{`label`} too big"}
+            }
+            return num;
+          }
+          str += format_string.charAt(i);
+        }
+      }
+
+      function READ_NUM_AFTER_ASTER(label) {
+        var arg, num = READ_NUM(label);
+        if (format_string.charAt(i + 1) === '$') {
+          i++;
+          arg = GET_POS_ARG(num);
+        } else {
+          arg = GET_NEXT_ARG();
+        }
+        return #{`arg`.to_int};
+      }
+
+      for (i = format_string.indexOf('%'); i !== -1; i = format_string.indexOf('%', i)) {
+        str = undefined;
+
+        flags = FNONE;
+        width = -1;
+        precision = -1;
+        next_arg = undefined;
+
+        end_slice = i;
+
+        i++;
+
+        switch (format_string.charAt(i)) {
+        case '%':
+          begin_slice = i;
+          // no-break
+        case '':
+        case '\n':
+        case '\0':
+          i++;
+          continue;
+        }
+
+        format_sequence: for (; i < len; i++) {
+          switch (format_string.charAt(i)) {
+
+          case ' ':
+            CHECK_FOR_FLAGS();
+            flags |= FSPACE;
+            continue format_sequence;
+
+          case '#':
+            CHECK_FOR_FLAGS();
+            flags |= FSHARP;
+            continue format_sequence;
+
+          case '+':
+            CHECK_FOR_FLAGS();
+            flags |= FPLUS;
+            continue format_sequence;
+
+          case '-':
+            CHECK_FOR_FLAGS();
+            flags |= FMINUS;
+            continue format_sequence;
+
+          case '0':
+            CHECK_FOR_FLAGS();
+            flags |= FZERO;
+            continue format_sequence;
+
+          case '1':
+          case '2':
+          case '3':
+          case '4':
+          case '5':
+          case '6':
+          case '7':
+          case '8':
+          case '9':
+            tmp_num = READ_NUM('width');
+            if (format_string.charAt(i + 1) === '$') {
+              if (i + 2 === len) {
+                str = '%';
+                i++;
+                break format_sequence;
+              }
+              if (next_arg !== undefined) {
+                #{::Kernel.raise ::ArgumentError, "value given twice - %#{`tmp_num`}$"}
+              }
+              next_arg = GET_POS_ARG(tmp_num);
+              i++;
+            } else {
+              CHECK_FOR_WIDTH();
+              flags |= FWIDTH;
+              width = tmp_num;
+            }
+            continue format_sequence;
+
+          case '<':
+          case '\{':
+            closing_brace_char = (format_string.charAt(i) === '<' ? '>' : '\}');
+            hash_parameter_key = '';
+
+            i++;
+
+            for (;; i++) {
+              if (i === len) {
+                #{::Kernel.raise ::ArgumentError, 'malformed name - unmatched parenthesis'}
+              }
+              if (format_string.charAt(i) === closing_brace_char) {
+
+                if (pos_arg_num > 0) {
+                  #{::Kernel.raise ::ArgumentError, "named #{`hash_parameter_key`} after unnumbered(#{`pos_arg_num`})"}
+                }
+                if (pos_arg_num === -1) {
+                  #{::Kernel.raise ::ArgumentError, "named #{`hash_parameter_key`} after numbered"}
+                }
+                pos_arg_num = -2;
+
+                if (args[0] === undefined || !args[0].$$is_hash) {
+                  #{::Kernel.raise ::ArgumentError, 'one hash required'}
+                }
+
+                next_arg = #{`args[0]`.fetch(`hash_parameter_key`)};
+
+                if (closing_brace_char === '>') {
+                  continue format_sequence;
+                } else {
+                  str = next_arg.toString();
+                  if (precision !== -1) { str = str.slice(0, precision); }
+                  if (flags&FMINUS) {
+                    while (str.length < width) { str = str + ' '; }
+                  } else {
+                    while (str.length < width) { str = ' ' + str; }
+                  }
+                  break format_sequence;
+                }
+              }
+              hash_parameter_key += format_string.charAt(i);
+            }
+            // raise
+
+          case '*':
+            i++;
+            CHECK_FOR_WIDTH();
+            flags |= FWIDTH;
+            width = READ_NUM_AFTER_ASTER('width');
+            if (width < 0) {
+              flags |= FMINUS;
+              width = -width;
+            }
+            continue format_sequence;
+
+          case '.':
+            if (flags&FPREC0) {
+              #{::Kernel.raise ::ArgumentError, 'precision given twice'}
+            }
+            flags |= FPREC|FPREC0;
+            precision = 0;
+            i++;
+            if (format_string.charAt(i) === '*') {
+              i++;
+              precision = READ_NUM_AFTER_ASTER('precision');
+              if (precision < 0) {
+                flags &= ~FPREC;
+              }
+              continue format_sequence;
+            }
+            precision = READ_NUM('precision');
+            continue format_sequence;
+
+          case 'd':
+          case 'i':
+          case 'u':
+            arg = #{::Kernel.Integer(`GET_ARG()`)};
+            if (arg >= 0) {
+              str = arg.toString();
+              while (str.length < precision) { str = '0' + str; }
+              if (flags&FMINUS) {
+                if (flags&FPLUS || flags&FSPACE) { str = (flags&FPLUS ? '+' : ' ') + str; }
+                while (str.length < width) { str = str + ' '; }
+              } else {
+                if (flags&FZERO && precision === -1) {
+                  while (str.length < width - ((flags&FPLUS || flags&FSPACE) ? 1 : 0)) { str = '0' + str; }
+                  if (flags&FPLUS || flags&FSPACE) { str = (flags&FPLUS ? '+' : ' ') + str; }
+                } else {
+                  if (flags&FPLUS || flags&FSPACE) { str = (flags&FPLUS ? '+' : ' ') + str; }
+                  while (str.length < width) { str = ' ' + str; }
+                }
+              }
+            } else {
+              str = (-arg).toString();
+              while (str.length < precision) { str = '0' + str; }
+              if (flags&FMINUS) {
+                str = '-' + str;
+                while (str.length < width) { str = str + ' '; }
+              } else {
+                if (flags&FZERO && precision === -1) {
+                  while (str.length < width - 1) { str = '0' + str; }
+                  str = '-' + str;
+                } else {
+                  str = '-' + str;
+                  while (str.length < width) { str = ' ' + str; }
+                }
+              }
+            }
+            break format_sequence;
+
+          case 'b':
+          case 'B':
+          case 'o':
+          case 'x':
+          case 'X':
+            switch (format_string.charAt(i)) {
+            case 'b':
+            case 'B':
+              base_number = 2;
+              base_prefix = '0b';
+              base_neg_zero_regex = /^1+/;
+              base_neg_zero_digit = '1';
+              break;
+            case 'o':
+              base_number = 8;
+              base_prefix = '0';
+              base_neg_zero_regex = /^3?7+/;
+              base_neg_zero_digit = '7';
+              break;
+            case 'x':
+            case 'X':
+              base_number = 16;
+              base_prefix = '0x';
+              base_neg_zero_regex = /^f+/;
+              base_neg_zero_digit = 'f';
+              break;
+            }
+            arg = #{::Kernel.Integer(`GET_ARG()`)};
+            if (arg >= 0) {
+              str = arg.toString(base_number);
+              while (str.length < precision) { str = '0' + str; }
+              if (flags&FMINUS) {
+                if (flags&FPLUS || flags&FSPACE) { str = (flags&FPLUS ? '+' : ' ') + str; }
+                if (flags&FSHARP && arg !== 0) { str = base_prefix + str; }
+                while (str.length < width) { str = str + ' '; }
+              } else {
+                if (flags&FZERO && precision === -1) {
+                  while (str.length < width - ((flags&FPLUS || flags&FSPACE) ? 1 : 0) - ((flags&FSHARP && arg !== 0) ? base_prefix.length : 0)) { str = '0' + str; }
+                  if (flags&FSHARP && arg !== 0) { str = base_prefix + str; }
+                  if (flags&FPLUS || flags&FSPACE) { str = (flags&FPLUS ? '+' : ' ') + str; }
+                } else {
+                  if (flags&FSHARP && arg !== 0) { str = base_prefix + str; }
+                  if (flags&FPLUS || flags&FSPACE) { str = (flags&FPLUS ? '+' : ' ') + str; }
+                  while (str.length < width) { str = ' ' + str; }
+                }
+              }
+            } else {
+              if (flags&FPLUS || flags&FSPACE) {
+                str = (-arg).toString(base_number);
+                while (str.length < precision) { str = '0' + str; }
+                if (flags&FMINUS) {
+                  if (flags&FSHARP) { str = base_prefix + str; }
+                  str = '-' + str;
+                  while (str.length < width) { str = str + ' '; }
+                } else {
+                  if (flags&FZERO && precision === -1) {
+                    while (str.length < width - 1 - (flags&FSHARP ? 2 : 0)) { str = '0' + str; }
+                    if (flags&FSHARP) { str = base_prefix + str; }
+                    str = '-' + str;
+                  } else {
+                    if (flags&FSHARP) { str = base_prefix + str; }
+                    str = '-' + str;
+                    while (str.length < width) { str = ' ' + str; }
+                  }
+                }
+              } else {
+                str = (arg >>> 0).toString(base_number).replace(base_neg_zero_regex, base_neg_zero_digit);
+                while (str.length < precision - 2) { str = base_neg_zero_digit + str; }
+                if (flags&FMINUS) {
+                  str = '..' + str;
+                  if (flags&FSHARP) { str = base_prefix + str; }
+                  while (str.length < width) { str = str + ' '; }
+                } else {
+                  if (flags&FZERO && precision === -1) {
+                    while (str.length < width - 2 - (flags&FSHARP ? base_prefix.length : 0)) { str = base_neg_zero_digit + str; }
+                    str = '..' + str;
+                    if (flags&FSHARP) { str = base_prefix + str; }
+                  } else {
+                    str = '..' + str;
+                    if (flags&FSHARP) { str = base_prefix + str; }
+                    while (str.length < width) { str = ' ' + str; }
+                  }
+                }
+              }
+            }
+            if (format_string.charAt(i) === format_string.charAt(i).toUpperCase()) {
+              str = str.toUpperCase();
+            }
+            break format_sequence;
+
+          case 'f':
+          case 'e':
+          case 'E':
+          case 'g':
+          case 'G':
+            arg = #{::Kernel.Float(`GET_ARG()`)};
+            if (arg >= 0 || isNaN(arg)) {
+              if (arg === Infinity) {
+                str = 'Inf';
+              } else {
+                switch (format_string.charAt(i)) {
+                case 'f':
+                  str = arg.toFixed(precision === -1 ? 6 : precision);
+                  break;
+                case 'e':
+                case 'E':
+                  str = arg.toExponential(precision === -1 ? 6 : precision);
+                  break;
+                case 'g':
+                case 'G':
+                  str = arg.toExponential();
+                  exponent = parseInt(str.split('e')[1], 10);
+                  if (!(exponent < -4 || exponent >= (precision === -1 ? 6 : precision))) {
+                    str = arg.toPrecision(precision === -1 ? (flags&FSHARP ? 6 : undefined) : precision);
+                  }
+                  break;
+                }
+              }
+              if (flags&FMINUS) {
+                if (flags&FPLUS || flags&FSPACE) { str = (flags&FPLUS ? '+' : ' ') + str; }
+                while (str.length < width) { str = str + ' '; }
+              } else {
+                if (flags&FZERO && arg !== Infinity && !isNaN(arg)) {
+                  while (str.length < width - ((flags&FPLUS || flags&FSPACE) ? 1 : 0)) { str = '0' + str; }
+                  if (flags&FPLUS || flags&FSPACE) { str = (flags&FPLUS ? '+' : ' ') + str; }
+                } else {
+                  if (flags&FPLUS || flags&FSPACE) { str = (flags&FPLUS ? '+' : ' ') + str; }
+                  while (str.length < width) { str = ' ' + str; }
+                }
+              }
+            } else {
+              if (arg === -Infinity) {
+                str = 'Inf';
+              } else {
+                switch (format_string.charAt(i)) {
+                case 'f':
+                  str = (-arg).toFixed(precision === -1 ? 6 : precision);
+                  break;
+                case 'e':
+                case 'E':
+                  str = (-arg).toExponential(precision === -1 ? 6 : precision);
+                  break;
+                case 'g':
+                case 'G':
+                  str = (-arg).toExponential();
+                  exponent = parseInt(str.split('e')[1], 10);
+                  if (!(exponent < -4 || exponent >= (precision === -1 ? 6 : precision))) {
+                    str = (-arg).toPrecision(precision === -1 ? (flags&FSHARP ? 6 : undefined) : precision);
+                  }
+                  break;
+                }
+              }
+              if (flags&FMINUS) {
+                str = '-' + str;
+                while (str.length < width) { str = str + ' '; }
+              } else {
+                if (flags&FZERO && arg !== -Infinity) {
+                  while (str.length < width - 1) { str = '0' + str; }
+                  str = '-' + str;
+                } else {
+                  str = '-' + str;
+                  while (str.length < width) { str = ' ' + str; }
+                }
+              }
+            }
+            if (format_string.charAt(i) === format_string.charAt(i).toUpperCase() && arg !== Infinity && arg !== -Infinity && !isNaN(arg)) {
+              str = str.toUpperCase();
+            }
+            str = str.replace(/([eE][-+]?)([0-9])$/, '$10$2');
+            break format_sequence;
+
+          case 'a':
+          case 'A':
+            // Not implemented because there are no specs for this field type.
+            #{::Kernel.raise ::NotImplementedError, '`A` and `a` format field types are not implemented in Opal yet'}
+            // raise
+
+          case 'c':
+            arg = GET_ARG();
+            if (#{`arg`.respond_to?(:to_ary)}) { arg = #{`arg`.to_ary}[0]; }
+            if (#{`arg`.respond_to?(:to_str)}) {
+              str = #{`arg`.to_str};
+            } else {
+              str = String.fromCharCode($coerce_to(arg, #{::Integer}, 'to_int'));
+            }
+            if (str.length !== 1) {
+              #{::Kernel.raise ::ArgumentError, '%c requires a character'}
+            }
+            if (flags&FMINUS) {
+              while (str.length < width) { str = str + ' '; }
+            } else {
+              while (str.length < width) { str = ' ' + str; }
+            }
+            break format_sequence;
+
+          case 'p':
+            str = #{`GET_ARG()`.inspect};
+            if (precision !== -1) { str = str.slice(0, precision); }
+            if (flags&FMINUS) {
+              while (str.length < width) { str = str + ' '; }
+            } else {
+              while (str.length < width) { str = ' ' + str; }
+            }
+            break format_sequence;
+
+          case 's':
+            str = #{`GET_ARG()`.to_s};
+            if (precision !== -1) { str = str.slice(0, precision); }
+            if (flags&FMINUS) {
+              while (str.length < width) { str = str + ' '; }
+            } else {
+              while (str.length < width) { str = ' ' + str; }
+            }
+            break format_sequence;
+
+          default:
+            #{::Kernel.raise ::ArgumentError, "malformed format string - %#{`format_string.charAt(i)`}"}
+          }
+        }
+
+        if (str === undefined) {
+          #{::Kernel.raise ::ArgumentError, 'malformed format string - %'}
+        }
+
+        result += format_string.slice(begin_slice, end_slice) + str;
+        begin_slice = i + 1;
+      }
+
+      if (#{$DEBUG} && pos_arg_num >= 0 && seq_arg_num < args.length) {
+        #{::Kernel.raise ::ArgumentError, 'too many arguments for format string'}
+      }
+
+      return result + format_string.slice(begin_slice);
+    }
+  end
+
+  alias sprintf format
+end
diff --git a/opal/corelib/main.rb b/opal/corelib/main.rb
new file mode 100644
index 00000000..bcaada3a
--- /dev/null
+++ b/opal/corelib/main.rb
@@ -0,0 +1,18 @@
+class << self
+  def to_s
+    'main'
+  end
+
+  def include(mod)
+    ::Object.include mod
+  end
+
+  def autoload(*args)
+    `Opal.Object.$autoload.apply(Opal.Object, args)`
+  end
+
+  # Compiler overrides this method
+  def using(mod)
+    ::Kernel.raise 'main.using is permitted only at toplevel'
+  end
+end
diff --git a/opal/corelib/marshal.rb b/opal/corelib/marshal.rb
new file mode 100644
index 00000000..aa93dc60
--- /dev/null
+++ b/opal/corelib/marshal.rb
@@ -0,0 +1,19 @@
+require 'corelib/marshal/read_buffer'
+require 'corelib/marshal/write_buffer'
+
+module ::Marshal
+  MAJOR_VERSION = 4
+  MINOR_VERSION = 8
+
+  class << self
+    def dump(object)
+      self::WriteBuffer.new(object).write
+    end
+
+    def load(marshaled)
+      self::ReadBuffer.new(marshaled).read
+    end
+
+    alias restore load
+  end
+end
diff --git a/opal/corelib/marshal/read_buffer.rb b/opal/corelib/marshal/read_buffer.rb
new file mode 100644
index 00000000..68cc6eab
--- /dev/null
+++ b/opal/corelib/marshal/read_buffer.rb
@@ -0,0 +1,562 @@
+# https://github.com/ruby/ruby/blob/trunk/doc/marshal.rdoc
+# https://github.com/ruby/ruby/blob/trunk/marshal.c
+
+module ::Marshal
+  class self::ReadBuffer
+    %x{
+      function stringToBytes(string) {
+        var i,
+            singleByte,
+            l = string.length,
+            result = [];
+
+        for (i = 0; i < l; i++) {
+          singleByte = string.charCodeAt(i);
+          result.push(singleByte);
+        }
+        return result;
+      }
+    }
+
+    attr_reader :version, :buffer, :index, :object_cache, :symbols_cache
+
+    def initialize(input)
+      @buffer = `stringToBytes(#{input.to_s})`
+      @index = 0
+      major = read_byte
+      minor = read_byte
+      if major != MAJOR_VERSION || minor != MINOR_VERSION
+        ::Kernel.raise ::TypeError, "incompatible marshal file format (can't be read)"
+      end
+      @version = "#{major}.#{minor}"
+      @object_cache = []
+      @symbols_cache = []
+      @ivars = []
+    end
+
+    def length
+      @buffer.length
+    end
+
+    def read(cache: true)
+      code = read_char
+      # The first character indicates the type of the object
+      case code
+      when '0'
+        nil
+      when 'T'
+        true
+      when 'F'
+        false
+      when 'i'
+        read_fixnum
+      when 'f'
+        read_float
+      when 'l'
+        read_bignum
+      when '"'
+        read_string
+      when ':'
+        read_symbol
+      when ';'
+        read_cached_symbol
+      when '['
+        read_array
+      when '{'
+        read_hash
+      when '}'
+        read_hashdef
+      when '/'
+        read_regexp
+      when 'S'
+        read_struct
+      when 'c'
+        read_class
+      when 'm'
+        read_module
+      when 'o'
+        read_object
+      when '@'
+        read_cached_object
+      when 'e'
+        read_extended_object
+      when 'I'
+        read_primitive_with_ivars
+      when 'C'
+        read_user_class
+      when 'u'
+        read_user_defined
+      when 'U'
+        read_user_marshal
+      when 'M'
+        ::Kernel.raise ::NotImplementedError, 'ModuleOld type cannot be demarshaled yet' # read_module_old
+      when 'd'
+        ::Kernel.raise ::NotImplementedError, 'Data type cannot be demarshaled'
+      else
+        ::Kernel.raise ::ArgumentError, 'dump format error'
+      end
+    end
+
+    def read_byte
+      if @index >= length
+        ::Kernel.raise ::ArgumentError, 'marshal data too short'
+      end
+      result = @buffer[@index]
+      @index += 1
+      result
+    end
+
+    def read_char
+      `String.fromCharCode(#{read_byte})`
+    end
+
+    # Reads and returns a fixnum from an input stream
+    #
+    def read_fixnum
+      %x{
+        var x, i, c = (#{read_byte} ^ 128) - 128;
+        if (c === 0) {
+          return 0;
+        }
+
+        if (c > 0) {
+          if (4 < c && c < 128) {
+            return c - 5;
+          }
+          x = 0;
+          for (i = 0; i < c; i++) {
+            x |= (#{read_byte} << (8*i));
+          }
+        } else {
+          if (-129 < c && c < -4) {
+            return c + 5;
+          }
+
+          c = -c;
+          x = -1;
+
+          for (i = 0; i < c; i++) {
+            x &= ~(0xff << (8*i));
+            x |= (#{read_byte} << (8*i));
+          }
+        }
+
+        return x;
+      }
+    end
+
+    # Reads and returns Float from an input stream
+    #
+    # @example
+    #   123.456
+    # Is encoded as
+    #   'f', '123.456'
+    #
+    def read_float
+      s = read_string(cache: false)
+      result = if s == 'nan'
+                 0.0 / 0
+               elsif s == 'inf'
+                 1.0 / 0
+               elsif s == '-inf'
+                 -1.0 / 0
+               else
+                 s.to_f
+               end
+      @object_cache << result
+      result
+    end
+
+    # Reads and returns Bignum from an input stream
+    #
+    def read_bignum
+      sign = read_char == '-' ? -1 : 1
+      size = read_fixnum * 2
+      result = 0
+      (0...size).each do |exp|
+        result += read_char.ord * 2**(exp * 8)
+      end
+      result = result.to_i * sign
+      @object_cache << result
+      result
+    end
+
+    # Reads and returns a string from an input stream
+    # Sometimes string shouldn't be cached using
+    # an internal object cache, for a:
+    #  + class/module name
+    #  + string representation of float
+    #  + string representation of regexp
+    #
+    def read_string(cache: true)
+      length = read_fixnum
+      %x{
+        var i, result = '';
+
+        for (i = 0; i < length; i++) {
+          result += #{read_char};
+        }
+
+        if (cache) {
+          self.object_cache.push(result);
+        }
+
+        return result;
+      }
+    end
+
+    # Reads and returns a symbol from an input stream
+    #
+    def read_symbol
+      length = read_fixnum
+      %x{
+        var i, result = '';
+
+        for (i = 0; i < length; i++) {
+          result += #{read_char};
+        }
+
+        self.symbols_cache.push(result);
+
+        return result;
+      }
+    end
+
+    # Reads a symbol that was previously cache by its link
+    #
+    # @example
+    #   [:a, :a, :b, :b, :c, :c]
+    # Is encoded as
+    #   '[', 6, :a, @0, :b, @1, :c, @2
+    #
+    def read_cached_symbol
+      symbols_cache[read_fixnum]
+    end
+
+    # Reads and returns an array from an input stream
+    #
+    # @example
+    #   [100, 200, 300]
+    # is encoded as
+    #   '[', 3, 100, 200, 300
+    #
+    def read_array
+      result = []
+      @object_cache << result
+      length = read_fixnum
+      %x{
+        if (length > 0) {
+          while (result.length < length) {
+            result.push(#{read});
+          }
+        }
+
+        return result;
+      }
+    end
+
+    # Reads and returns a hash from an input stream
+    # Sometimes hash shouldn't  be cached using
+    # an internal object cache, for a:
+    #  + hash of instance variables
+    #  + hash of struct attributes
+    #
+    # @example
+    #   {100 => 200, 300 => 400}
+    # is encoded as
+    #   '{', 2, 100, 200, 300, 400
+    #
+    def read_hash(cache: true)
+      result = {}
+
+      if cache
+        @object_cache << result
+      end
+
+      length = read_fixnum
+      %x{
+        if (length > 0) {
+          var key, value, i;
+          for (i = 0; i < #{length}; i++) {
+            key = #{read};
+            value = #{read};
+            #{result[`key`] = `value`};
+          }
+        }
+        return result;
+      }
+    end
+
+    # Reads and returns a hash with default value
+    #
+    # @example
+    #   Hash.new(:default).merge(100 => 200)
+    # is encoded as
+    #   '}', 1, 100, 200, :default
+    #
+    def read_hashdef
+      hash = read_hash
+      default_value = read
+      hash.default = default_value
+      hash
+    end
+
+    # Reads and returns Regexp from an input stream
+    #
+    # @example
+    #   r = /regexp/mix
+    # is encoded as
+    #   '/', 'regexp', r.options.chr
+    #
+    def read_regexp
+      string = read_string(cache: false)
+      options = read_byte
+
+      result = ::Regexp.new(string, options)
+      @object_cache << result
+      result
+    end
+
+    # Reads and returns a Struct from an input stream
+    #
+    # @example
+    #   Point = Struct.new(:x, :y)
+    #   Point.new(100, 200)
+    # is encoded as
+    #   'S', :Point, {:x => 100, :y => 200}
+    #
+    def read_struct
+      klass_name = read(cache: false)
+      klass = safe_const_get(klass_name)
+      attributes = read_hash(cache: false)
+      args = attributes.values_at(*klass.members)
+      result = klass.new(*args)
+      @object_cache << result
+      result
+    end
+
+    # Reads and returns a Class from an input stream
+    #
+    # @example
+    #   String
+    # is encoded as
+    #   'c', 'String'
+    #
+    def read_class
+      klass_name = read_string(cache: false)
+      result = safe_const_get(klass_name)
+      unless result.class == ::Class
+        ::Kernel.raise ::ArgumentError, "#{klass_name} does not refer to a Class"
+      end
+      @object_cache << result
+      result
+    end
+
+    # Reads and returns a Module from an input stream
+    #
+    # @example
+    #   Kernel
+    # is encoded as
+    #   'm', 'Kernel'
+    #
+    def read_module
+      mod_name = read_string(cache: false)
+      result = safe_const_get(mod_name)
+      unless result.class == ::Module
+        ::Kernel.raise ::ArgumentError, "#{mod_name} does not refer to a Module"
+      end
+      @object_cache << result
+      result
+    end
+
+    # Reads and returns an abstract object from an input stream
+    #
+    # @example
+    #   obj = Object.new
+    #   obj.instance_variable_set(:@ivar, 100)
+    #   obj
+    # is encoded as
+    #   'o', :Object, {:@ivar => 100}
+    #
+    # The only exception is a Range class (and its subclasses)
+    # For some reason in MRI isntances of this class have instance variables
+    # - begin
+    # - end
+    # - excl
+    # without '@' perfix.
+    #
+    def read_object
+      klass_name = read(cache: false)
+      klass = safe_const_get(klass_name)
+
+      object = klass.allocate
+      @object_cache << object
+
+      ivars = read_hash(cache: false)
+      ivars.each do |name, value|
+        if name[0] == '@'
+          object.instance_variable_set(name, value)
+        else
+          # MRI allows an object to have ivars that do not start from '@'
+          # https://github.com/ruby/ruby/blob/ab3a40c1031ff3a0535f6bcf26de40de37dbb1db/range.c#L1225
+          `object[name] = value`
+        end
+      end
+
+      object
+    end
+
+    # Reads an object that was cached previously by its link
+    #
+    # @example
+    #   obj1 = Object.new
+    #   obj2 = Object.new
+    #   obj3 = Object.new
+    #   [obj1, obj1, obj2, obj2, obj3, obj3]
+    # is encoded as
+    #   [obj1, @1, obj2, @2, obj3, @3]
+    #
+    # NOTE: array itself is cached as @0, that's why obj1 is cached a @1, obj2 is @2, etc.
+    #
+    def read_cached_object
+      object_cache[read_fixnum]
+    end
+
+    # Reads an object that was dynamically extended before marshaling like
+    #
+    # @example
+    #   M1 = Module.new
+    #   M2 = Module.new
+    #   obj = Object.new
+    #   obj.extend(M1)
+    #   obj.extend(M2)
+    #   obj
+    # is encoded as
+    #   'e', :M2, :M1, obj
+    #
+    def read_extended_object
+      mod = safe_const_get(read)
+      object = read
+      object.extend(mod)
+      object
+    end
+
+    # Reads a primitive object with instance variables
+    # (classes that have their own marshalling rules, like Array/Hash/Regexp/etc)
+    #
+    # @example
+    #   arr = [100, 200, 300]
+    #   arr.instance_variable_set(:@ivar, :value)
+    #   arr
+    # is encoded as
+    #   'I', [100, 200, 300], {:@ivar => value}
+    #
+    def read_primitive_with_ivars
+      object = read
+
+      primitive_ivars = read_hash(cache: false)
+
+      if primitive_ivars.any? && object.is_a?(String)
+        object = `new String(object)`
+      end
+
+      primitive_ivars.each do |name, value|
+        if name != 'E'
+          object.instance_variable_set(name, value)
+        end
+      end
+
+      object
+    end
+
+    # Reads and User Class (instance of String/Regexp/Array/Hash subclass)
+    #
+    # @example
+    #   UserArray = Class.new(Array)
+    #   UserArray[100, 200, 300]
+    # is encoded as
+    #   'C', :UserArray, [100, 200, 300]
+    #
+    def read_user_class
+      klass_name = read(cache: false)
+      klass = safe_const_get(klass_name)
+      value = read(cache: false)
+
+      result = if klass < Hash
+                 klass[value]
+               else
+                 klass.new(value)
+               end
+
+      @object_cache << result
+
+      result
+    end
+
+    # Reads a 'User Defined' object that has '_dump/self._load' methods
+    #
+    # @example
+    #   class UserDefined
+    #     def _dump(level)
+    #       '_dumped'
+    #     end
+    #   end
+    #
+    #   UserDefined.new
+    # is encoded as
+    #   'u', :UserDefined, '_dumped'
+    #
+    # To load it back UserDefined._load' must be used.
+    #
+    def read_user_defined
+      klass_name = read(cache: false)
+      klass = safe_const_get(klass_name)
+      data = read_string(cache: false)
+      result = klass._load(data)
+
+      @object_cache << result
+
+      result
+    end
+
+    # Reads a 'User Marshal' object that has 'marshal_dump/marshal_load' methods
+    #
+    # @example
+    #   class UserMarshal < Struct.new(:a, :b)
+    #     def marshal_dump
+    #       [a, b]
+    #     end
+    #
+    #     def marshal_load(data)
+    #       self.a, self.b = data
+    #     end
+    #   end
+    #
+    #   UserMarshal.new(100, 200)
+    # is encoded as
+    #   'U', :UserMarshal, [100, 200]
+    #
+    # To load it back `UserMarshal.allocate` and `UserMarshal#marshal_load` must be called
+    #
+    def read_user_marshal
+      klass_name = read(cache: false)
+      klass = safe_const_get(klass_name)
+
+      result = klass.allocate
+      @object_cache << result
+
+      data = read(cache: false)
+      result.marshal_load(data)
+      result
+    end
+
+    # Returns a constant by passed const_name,
+    #  re-raises Marshal-specific error when it's missing
+    #
+    def safe_const_get(const_name)
+      ::Object.const_get(const_name)
+    rescue ::NameError
+      ::Kernel.raise ::ArgumentError, "undefined class/module #{const_name}"
+    end
+  end
+end
diff --git a/opal/corelib/marshal/write_buffer.rb b/opal/corelib/marshal/write_buffer.rb
new file mode 100644
index 00000000..d2d873ed
--- /dev/null
+++ b/opal/corelib/marshal/write_buffer.rb
@@ -0,0 +1,417 @@
+class ::NilClass
+  def __marshal__(buffer)
+    buffer.append('0')
+  end
+end
+
+class ::Boolean
+  def __marshal__(buffer)
+    if `self == true`
+      buffer.append('T')
+    else
+      buffer.append('F')
+    end
+  end
+end
+
+class ::Integer
+  def __marshal__(buffer)
+    if self >= -0x40000000 && self < 0x40000000
+      buffer.append('i')
+      buffer.write_fixnum(self)
+    else
+      buffer.append('l')
+      buffer.write_bignum(self)
+    end
+  end
+end
+
+class ::Float
+  def __marshal__(buffer)
+    buffer.save_link(self)
+    buffer.append('f')
+    buffer.write_float(self)
+  end
+end
+
+class ::String
+  def __marshal__(buffer)
+    buffer.save_link(self)
+    buffer.write_ivars_prefix(self)
+    buffer.write_extends(self)
+    buffer.write_user_class(::String, self)
+    buffer.append('"')
+    buffer.write_string(self)
+  end
+end
+
+class ::Array
+  def __marshal__(buffer)
+    buffer.save_link(self)
+    buffer.write_ivars_prefix(self)
+    buffer.write_extends(self)
+    buffer.write_user_class(::Array, self)
+    buffer.append('[')
+    buffer.write_array(self)
+    buffer.write_ivars_suffix(self)
+  end
+end
+
+class ::Hash
+  def __marshal__(buffer)
+    if default_proc
+      ::Kernel.raise ::TypeError, "can't dump hash with default proc"
+    end
+
+    buffer.save_link(self)
+    buffer.write_ivars_prefix(self)
+    buffer.write_extends(self)
+    buffer.write_user_class(Hash, self)
+    if default
+      buffer.append('}')
+      buffer.write_hash(self)
+      buffer.write(default)
+    else
+      buffer.append('{')
+      buffer.write_hash(self)
+    end
+    buffer.write_ivars_suffix(self)
+  end
+end
+
+class ::Regexp
+  def __marshal__(buffer)
+    buffer.save_link(self)
+    buffer.write_ivars_prefix(self)
+    buffer.write_extends(self)
+    buffer.write_user_class(::Regexp, self)
+    buffer.append('/')
+    buffer.write_regexp(self)
+    buffer.write_ivars_suffix(self)
+  end
+end
+
+class ::Proc
+  def __marshal__(buffer)
+    ::Kernel.raise ::TypeError, "no _dump_data is defined for class #{self.class}"
+  end
+end
+
+class ::Method
+  def __marshal__(buffer)
+    ::Kernel.raise ::TypeError, "no _dump_data is defined for class #{self.class}"
+  end
+end
+
+class ::MatchData
+  def __marshal__(buffer)
+    ::Kernel.raise ::TypeError, "no _dump_data is defined for class #{self.class}"
+  end
+end
+
+class ::Module
+  def __marshal__(buffer)
+    unless name
+      ::Kernel.raise ::TypeError, "can't dump anonymous module"
+    end
+
+    buffer.save_link(self)
+    buffer.append('m')
+    buffer.write_module(self)
+  end
+end
+
+class ::Class
+  def __marshal__(buffer)
+    unless name
+      ::Kernel.raise ::TypeError, "can't dump anonymous class"
+    end
+
+    if singleton_class?
+      ::Kernel.raise ::TypeError, "singleton class can't be dumped"
+    end
+
+    buffer.save_link(self)
+    buffer.append('c')
+    buffer.write_class(self)
+  end
+end
+
+class ::BasicObject
+  def __marshal__(buffer)
+    buffer.save_link(self)
+    buffer.write_extends(self)
+    buffer.append('o')
+    buffer.write_object(self)
+  end
+end
+
+class ::Range
+  def __marshal__(buffer)
+    buffer.save_link(self)
+    buffer.write_extends(self)
+    buffer.append('o')
+    buffer.append_symbol(self.class.name)
+    buffer.write_fixnum(3)
+    buffer.append_symbol('excl')
+    buffer.write(exclude_end?)
+    buffer.append_symbol('begin')
+    buffer.write(self.begin)
+    buffer.append_symbol('end')
+    buffer.write(self.end)
+  end
+end
+
+class ::Struct
+  def __marshal__(buffer)
+    buffer.save_link(self)
+    buffer.write_ivars_prefix(self)
+    buffer.write_extends(self)
+    buffer.append('S')
+    buffer.append_symbol(self.class.name)
+    buffer.write_fixnum(length)
+    each_pair do |attr_name, value|
+      buffer.append_symbol(attr_name)
+      buffer.write(value)
+    end
+    buffer.write_ivars_suffix(self)
+  end
+end
+
+module ::Marshal
+  class self::WriteBuffer
+    attr_reader :buffer
+
+    %x{
+      function binaryString(s) {
+        s = new String(s);
+        s.encoding = #{Encoding::BINARY};
+        return s;
+      }
+    }
+
+    def initialize(object)
+      @object = object
+      @buffer = ''
+      @cache = []
+      @extends = ::Hash.new { |h, k| h[k] = [] }
+      append(version)
+    end
+
+    def write(object = @object)
+      if idx = @cache.index(object.object_id)
+        write_object_link(idx)
+      elsif object.respond_to?(:marshal_dump)
+        write_usr_marshal(object)
+      elsif object.respond_to?(:_dump)
+        write_userdef(object)
+      else
+        case object
+        when nil, true, false, ::Proc, ::Method, ::MatchData, ::Range, ::Struct,
+             ::Array, ::Class, ::Module, ::Hash, ::Regexp
+          object.__marshal__(self)
+        when ::Integer
+          ::Integer.instance_method(:__marshal__).bind(object).call(self)
+        when ::Float
+          ::Float.instance_method(:__marshal__).bind(object).call(self)
+        when ::String
+          ::String.instance_method(:__marshal__).bind(object).call(self)
+        else
+          ::BasicObject.instance_method(:__marshal__).bind(object).call(self)
+        end
+      end
+
+      `binaryString(#{@buffer})`
+    end
+
+    def write_fixnum(n)
+      %x{
+        var s;
+
+        if (n == 0) {
+          s = String.fromCharCode(n);
+        } else if (n > 0 && n < 123) {
+          s = String.fromCharCode(n + 5);
+        } else if (n < 0 && n > -124) {
+          s = String.fromCharCode(256 + n - 5);
+        } else {
+          s = "";
+          var cnt = 0;
+          for (var i = 0; i < 4; i++) {
+            var b = n & 255;
+            s += String.fromCharCode(b);
+            n >>= 8
+            cnt += 1;
+            if (n === 0 || n === -1) {
+              break;
+            }
+          }
+          var l_byte;
+          if (n < 0) {
+            l_byte = 256 - cnt;
+          } else {
+            l_byte = cnt;
+          }
+          s = String.fromCharCode(l_byte) + s;
+        }
+        #{append(`s`)}
+      }
+    end
+
+    def write_bignum(n)
+      sign = n > 0 ? '+' : '-'
+      append(sign)
+
+      num = n > 0 ? n : -n
+
+      arr = []
+      while num > 0
+        arr << (num & 0xffff)
+        num = (num / 0x10000).floor
+      end
+
+      write_fixnum(arr.size)
+
+      arr.each do |x|
+        append(`String.fromCharCode(x & 0xff)`)
+        append(`String.fromCharCode(#{(x / 0x100).floor})`)
+      end
+    end
+
+    def write_string(s)
+      write_fixnum(s.length)
+      append(s)
+    end
+
+    def append_symbol(sym)
+      append(':')
+      write_fixnum(sym.length)
+      append(sym)
+    end
+
+    def write_array(a)
+      write_fixnum(a.length)
+      a.each do |item|
+        write(item)
+      end
+    end
+
+    def write_hash(h)
+      write_fixnum(h.length)
+      h.each do |key, value|
+        write(key)
+        write(value)
+      end
+    end
+
+    def write_object(obj)
+      append_symbol(obj.class.name)
+      write_ivars_suffix(obj, true)
+    end
+
+    def write_class(klass)
+      write_string(klass.name)
+    end
+
+    def write_module(mod)
+      write_string(mod.name)
+    end
+
+    def write_regexp(regexp)
+      write_string(regexp.to_s)
+      append(`String.fromCharCode(#{regexp.options})`)
+    end
+
+    def write_float(f)
+      if f.equal?(::Float::INFINITY)
+        write_string('inf')
+      elsif f.equal?(-::Float::INFINITY)
+        write_string('-inf')
+      elsif f.equal?(::Float::NAN)
+        write_string('nan')
+      else
+        write_string(f.to_s)
+      end
+    end
+
+    def write_ivars_suffix(object, force = false)
+      if object.instance_variables.empty? && !force
+        return
+      end
+
+      write_fixnum(object.instance_variables.length)
+      object.instance_variables.each do |ivar_name|
+        append_symbol(ivar_name)
+        write(object.instance_variable_get(ivar_name))
+      end
+    end
+
+    def write_extends(object)
+      singleton_mods = object.singleton_class.ancestors.reject { |mod| mod.is_a?(Class) }
+      class_mods = object.class.ancestors.reject { |mod| mod.is_a?(Class) }
+      own_mods = singleton_mods - class_mods
+      unless own_mods.empty?
+        own_mods.each do |mod|
+          append('e')
+          append_symbol(mod.name)
+        end
+      end
+    end
+
+    def write_user_class(klass, object)
+      unless object.class.equal?(klass)
+        append('C')
+        append_symbol(object.class.name)
+      end
+    end
+
+    def write_object_link(idx)
+      append('@')
+      write_fixnum(idx)
+    end
+
+    def save_link(object)
+      @cache << object.object_id
+    end
+
+    def write_usr_marshal(object)
+      value = object.marshal_dump
+      klass = object.class
+      append('U')
+      namespace = `#{klass}.$$base_module`
+      if namespace.equal?(::Object)
+        append_symbol(`#{klass}.$$name`)
+      else
+        append_symbol(namespace.name + '::' + `#{klass}.$$name`)
+      end
+      write(value)
+    end
+
+    def write_userdef(object)
+      value = object._dump(0)
+
+      unless value.is_a?(::String)
+        ::Kernel.raise ::TypeError, '_dump() must return string'
+      end
+
+      write_ivars_prefix(value)
+      append('u')
+      append_symbol(object.class.name)
+      write_string(value)
+    end
+
+    def write_ivars_prefix(object)
+      unless object.instance_variables.empty?
+        append('I')
+      end
+    end
+
+    def append(s)
+      `#{@buffer} += #{s}`
+    end
+
+    def version
+      `String.fromCharCode(#{MAJOR_VERSION}, #{MINOR_VERSION})`
+    end
+  end
+end
diff --git a/opal/corelib/math.rb b/opal/corelib/math.rb
new file mode 100644
index 00000000..33d3132c
--- /dev/null
+++ b/opal/corelib/math.rb
@@ -0,0 +1,288 @@
+# helpers: type_error
+
+module ::Math
+  self::E  = `Math.E`
+  self::PI = `Math.PI`
+
+  self::DomainError = ::Class.new(::StandardError)
+
+  def self.checked(method, *args)
+    %x{
+      if (isNaN(args[0]) || (args.length == 2 && isNaN(args[1]))) {
+        return NaN;
+      }
+
+      var result = Math[method].apply(null, args);
+
+      if (isNaN(result)) {
+        #{::Kernel.raise DomainError, "Numerical argument is out of domain - \"#{method}\""};
+      }
+
+      return result;
+    }
+  end
+
+  def self.float!(value)
+    ::Kernel.Float(value)
+  rescue ::ArgumentError
+    ::Kernel.raise `$type_error(value, #{::Float})`
+  end
+
+  def self.integer!(value)
+    ::Kernel.Integer(value)
+  rescue ::ArgumentError
+    ::Kernel.raise `$type_error(value, #{::Integer})`
+  end
+
+  module_function
+
+  unless defined?(`Math.erf`)
+    %x{
+      Opal.prop(Math, 'erf', function(x) {
+        var A1 =  0.254829592,
+            A2 = -0.284496736,
+            A3 =  1.421413741,
+            A4 = -1.453152027,
+            A5 =  1.061405429,
+            P  =  0.3275911;
+
+        var sign = 1;
+
+        if (x < 0) {
+            sign = -1;
+        }
+
+        x = Math.abs(x);
+
+        var t = 1.0 / (1.0 + P * x);
+        var y = 1.0 - (((((A5 * t + A4) * t) + A3) * t + A2) * t + A1) * t * Math.exp(-x * x);
+
+        return sign * y;
+      });
+    }
+  end
+
+  unless defined?(`Math.erfc`)
+    %x{
+      Opal.prop(Math, 'erfc', function(x) {
+        var z = Math.abs(x),
+            t = 1.0 / (0.5 * z + 1.0);
+
+        var A1 = t * 0.17087277 + -0.82215223,
+            A2 = t * A1 + 1.48851587,
+            A3 = t * A2 + -1.13520398,
+            A4 = t * A3 + 0.27886807,
+            A5 = t * A4 + -0.18628806,
+            A6 = t * A5 + 0.09678418,
+            A7 = t * A6 + 0.37409196,
+            A8 = t * A7 + 1.00002368,
+            A9 = t * A8,
+            A10 = -z * z - 1.26551223 + A9;
+
+        var a = t * Math.exp(A10);
+
+        if (x < 0.0) {
+          return 2.0 - a;
+        }
+        else {
+          return a;
+        }
+      });
+    }
+  end
+
+  # Single argument equivalent functions
+  %i[
+    acos acosh asin asinh atan atanh cbrt
+    cos cosh erf erfc exp sin sinh sqrt tanh
+  ].each do |method|
+    define_method method do |x|
+      ::Math.checked method, ::Math.float!(x)
+    end
+  end
+
+  def atan2(y, x)
+    ::Math.checked :atan2, ::Math.float!(y), ::Math.float!(x)
+  end
+
+  def hypot(x, y)
+    ::Math.checked :hypot, ::Math.float!(x), ::Math.float!(y)
+  end
+
+  def frexp(x)
+    x = Math.float!(x)
+
+    %x{
+      if (isNaN(x)) {
+        return [NaN, 0];
+      }
+
+      var ex   = Math.floor(Math.log(Math.abs(x)) / Math.log(2)) + 1,
+          frac = x / Math.pow(2, ex);
+
+      return [frac, ex];
+    }
+  end
+
+  def gamma(n)
+    n = Math.float!(n)
+
+    %x{
+      var i, t, x, value, result, twoN, threeN, fourN, fiveN;
+
+      var G = 4.7421875;
+
+      var P = [
+         0.99999999999999709182,
+         57.156235665862923517,
+        -59.597960355475491248,
+         14.136097974741747174,
+        -0.49191381609762019978,
+         0.33994649984811888699e-4,
+         0.46523628927048575665e-4,
+        -0.98374475304879564677e-4,
+         0.15808870322491248884e-3,
+        -0.21026444172410488319e-3,
+         0.21743961811521264320e-3,
+        -0.16431810653676389022e-3,
+         0.84418223983852743293e-4,
+        -0.26190838401581408670e-4,
+         0.36899182659531622704e-5
+      ];
+
+
+      if (isNaN(n)) {
+        return NaN;
+      }
+
+      if (n === 0 && 1 / n < 0) {
+        return -Infinity;
+      }
+
+      if (n === -1 || n === -Infinity) {
+        #{::Kernel.raise DomainError, 'Numerical argument is out of domain - "gamma"'};
+      }
+
+      if (#{Integer === n}) {
+        if (n <= 0) {
+          return isFinite(n) ? Infinity : NaN;
+        }
+
+        if (n > 171) {
+          return Infinity;
+        }
+
+        value  = n - 2;
+        result = n - 1;
+
+        while (value > 1) {
+          result *= value;
+          value--;
+        }
+
+        if (result == 0) {
+          result = 1;
+        }
+
+        return result;
+      }
+
+      if (n < 0.5) {
+        return Math.PI / (Math.sin(Math.PI * n) * #{::Math.gamma(1 - n)});
+      }
+
+      if (n >= 171.35) {
+        return Infinity;
+      }
+
+      if (n > 85.0) {
+        twoN   = n * n;
+        threeN = twoN * n;
+        fourN  = threeN * n;
+        fiveN  = fourN * n;
+
+        return Math.sqrt(2 * Math.PI / n) * Math.pow((n / Math.E), n) *
+          (1 + 1 / (12 * n) + 1 / (288 * twoN) - 139 / (51840 * threeN) -
+          571 / (2488320 * fourN) + 163879 / (209018880 * fiveN) +
+          5246819 / (75246796800 * fiveN * n));
+      }
+
+      n -= 1;
+      x  = P[0];
+
+      for (i = 1; i < P.length; ++i) {
+        x += P[i] / (n + i);
+      }
+
+      t = n + G + 0.5;
+
+      return Math.sqrt(2 * Math.PI) * Math.pow(t, n + 0.5) * Math.exp(-t) * x;
+    }
+  end
+
+  def ldexp(mantissa, exponent)
+    mantissa = Math.float!(mantissa)
+    exponent = Math.integer!(exponent)
+
+    %x{
+      if (isNaN(exponent)) {
+        #{::Kernel.raise ::RangeError, 'float NaN out of range of integer'};
+      }
+
+      return mantissa * Math.pow(2, exponent);
+    }
+  end
+
+  def lgamma(n)
+    %x{
+      if (n == -1) {
+        return [Infinity, 1];
+      }
+      else {
+        return [Math.log(Math.abs(#{::Math.gamma(n)})), #{::Math.gamma(n)} < 0 ? -1 : 1];
+      }
+    }
+  end
+
+  def log(x, base = undefined)
+    if ::String === x
+      ::Kernel.raise `$type_error(x, #{::Float})`
+    end
+
+    if `base == null`
+      ::Math.checked :log, ::Math.float!(x)
+    else
+      if ::String === base
+        ::Kernel.raise `$type_error(base, #{::Float})`
+      end
+
+      ::Math.checked(:log, ::Math.float!(x)) / ::Math.checked(:log, ::Math.float!(base))
+    end
+  end
+
+  def log10(x)
+    if ::String === x
+      ::Kernel.raise `$type_error(x, #{::Float})`
+    end
+
+    ::Math.checked :log10, ::Math.float!(x)
+  end
+
+  def log2(x)
+    if ::String === x
+      ::Kernel.raise `$type_error(x, #{::Float})`
+    end
+
+    ::Math.checked :log2, ::Math.float!(x)
+  end
+
+  def tan(x)
+    x = ::Math.float!(x)
+
+    if x.infinite?
+      return ::Float::NAN
+    end
+
+    ::Math.checked :tan, ::Math.float!(x)
+  end
+end
diff --git a/opal/corelib/math/polyfills.rb b/opal/corelib/math/polyfills.rb
new file mode 100644
index 00000000..ee3448b5
--- /dev/null
+++ b/opal/corelib/math/polyfills.rb
@@ -0,0 +1,127 @@
+# Polyfills for browsers in the age of IE11
+
+unless defined?(`Math.acosh`)
+  %x{
+    Math.acosh = function(x) {
+      return Math.log(x + Math.sqrt(x * x - 1));
+    }
+  }
+end
+
+unless defined?(`Math.asinh`)
+  %x{
+    Math.asinh = function(x) {
+      return Math.log(x + Math.sqrt(x * x + 1))
+    }
+  }
+end
+
+unless defined?(`Math.atanh`)
+  %x{
+    Math.atanh = function(x) {
+      return 0.5 * Math.log((1 + x) / (1 - x));
+    }
+  }
+end
+
+unless defined?(`Math.cbrt`)
+  %x{
+    Math.cbrt = function(x) {
+      if (x == 0) {
+        return 0;
+      }
+
+      if (x < 0) {
+        return -Math.cbrt(-x);
+      }
+
+      var r  = x,
+          ex = 0;
+
+      while (r < 0.125) {
+        r *= 8;
+        ex--;
+      }
+
+      while (r > 1.0) {
+        r *= 0.125;
+        ex++;
+      }
+
+      r = (-0.46946116 * r + 1.072302) * r + 0.3812513;
+
+      while (ex < 0) {
+        r *= 0.5;
+        ex++;
+      }
+
+      while (ex > 0) {
+        r *= 2;
+        ex--;
+      }
+
+      r = (2.0 / 3.0) * r + (1.0 / 3.0) * x / (r * r);
+      r = (2.0 / 3.0) * r + (1.0 / 3.0) * x / (r * r);
+      r = (2.0 / 3.0) * r + (1.0 / 3.0) * x / (r * r);
+      r = (2.0 / 3.0) * r + (1.0 / 3.0) * x / (r * r);
+
+      return r;
+    }
+  }
+end
+
+unless defined?(`Math.cosh`)
+  %x{
+    Math.cosh = function(x) {
+      return (Math.exp(x) + Math.exp(-x)) / 2;
+    }
+  }
+end
+
+unless defined?(`Math.hypot`)
+  %x{
+    Math.hypot = function(x, y) {
+      return Math.sqrt(x * x + y * y)
+    }
+  }
+end
+
+unless defined?(`Math.log2`)
+  %x{
+    Math.log2 = function(x) {
+      return Math.log(x) / Math.LN2;
+    }
+  }
+end
+
+unless defined?(`Math.log10`)
+  %x{
+    Math.log10 = function(x) {
+      return Math.log(x) / Math.LN10;
+    }
+  }
+end
+
+unless defined?(`Math.sinh`)
+  %x{
+    Math.sinh = function(x) {
+      return (Math.exp(x) - Math.exp(-x)) / 2;
+    }
+  }
+end
+
+unless defined?(`Math.tanh`)
+  %x{
+    Math.tanh = function(x) {
+      if (x == Infinity) {
+        return 1;
+      }
+      else if (x == -Infinity) {
+        return -1;
+      }
+      else {
+        return (Math.exp(x) - Math.exp(-x)) / (Math.exp(x) + Math.exp(-x));
+      }
+    }
+  }
+end
diff --git a/opal/corelib/method.rb b/opal/corelib/method.rb
new file mode 100644
index 00000000..1ea842a2
--- /dev/null
+++ b/opal/corelib/method.rb
@@ -0,0 +1,114 @@
+class ::Method
+  attr_reader :owner, :receiver, :name
+
+  def initialize(receiver, owner, method, name)
+    @receiver = receiver
+    @owner    = owner
+    @name     = name
+    @method   = method
+  end
+
+  def arity
+    @method.arity
+  end
+
+  def parameters
+    `#{@method}.$$parameters`
+  end
+
+  def source_location
+    `#{@method}.$$source_location` || ['(eval)', 0]
+  end
+
+  def comments
+    `#{@method}.$$comments` || []
+  end
+
+  def call(*args, &block)
+    %x{
+      #{@method}.$$p = block;
+
+      return #{@method}.apply(#{@receiver}, args);
+    }
+  end
+
+  def curry(arity = undefined)
+    @method.curry(arity)
+  end
+
+  def >>(other)
+    @method >> other
+  end
+
+  def <<(other)
+    @method << other
+  end
+
+  def unbind
+    ::UnboundMethod.new(@receiver.class, @owner, @method, @name)
+  end
+
+  def to_proc
+    %x{
+      var proc = self.$call.bind(self);
+      proc.$$unbound = #{@method};
+      proc.$$is_lambda = true;
+      proc.$$arity = #{@method}.$$arity;
+      proc.$$parameters = #{@method}.$$parameters;
+      return proc;
+    }
+  end
+
+  def inspect
+    "#<#{self.class}: #{@receiver.class}##{@name} (defined in #{@owner} in #{source_location.join(':')})>"
+  end
+
+  alias [] call
+  alias === call
+end
+
+class ::UnboundMethod
+  attr_reader :source, :owner, :name
+
+  def initialize(source, owner, method, name)
+    @source = source
+    @owner  = owner
+    @method = method
+    @name   = name
+  end
+
+  def arity
+    @method.arity
+  end
+
+  def parameters
+    `#{@method}.$$parameters`
+  end
+
+  def source_location
+    `#{@method}.$$source_location` || ['(eval)', 0]
+  end
+
+  def comments
+    `#{@method}.$$comments` || []
+  end
+
+  def bind(object)
+    %x{
+      if (#{@owner}.$$is_module || Opal.is_a(#{object}, #{@owner})) {
+        return #{::Method.new(object, @owner, @method, @name)};
+      }
+      else {
+        #{::Kernel.raise ::TypeError, "can't bind singleton method to a different class (expected #{object}.kind_of?(#{@owner} to be true)"};
+      }
+    }
+  end
+
+  def bind_call(object, *args, &block)
+    bind(object).call(*args, &block)
+  end
+
+  def inspect
+    "#<#{self.class}: #{@source}##{@name} (defined in #{@owner} in #{source_location.join(':')})>"
+  end
+end
diff --git a/opal/corelib/module.rb b/opal/corelib/module.rb
new file mode 100644
index 00000000..164c72d1
--- /dev/null
+++ b/opal/corelib/module.rb
@@ -0,0 +1,736 @@
+# helpers: truthy, coerce_to, const_set, Object
+
+class ::Module
+  def self.allocate
+    %x{
+      var module = Opal.allocate_module(nil, function(){});
+      // Link the prototype of Module subclasses
+      if (self !== Opal.Module) Object.setPrototypeOf(module, self.$$prototype);
+      return module;
+    }
+  end
+
+  def initialize(&block)
+    module_eval(&block) if block_given?
+  end
+
+  def ===(object)
+    return false if `object == null`
+
+    `Opal.is_a(object, self)`
+  end
+
+  def <(other)
+    unless ::Module === other
+      ::Kernel.raise ::TypeError, 'compared with non class/module'
+    end
+
+    # class cannot be a descendant of itself
+    %x{
+      var working = self,
+          ancestors,
+          i, length;
+
+      if (working === other) {
+        return false;
+      }
+
+      for (i = 0, ancestors = Opal.ancestors(self), length = ancestors.length; i < length; i++) {
+        if (ancestors[i] === other) {
+          return true;
+        }
+      }
+
+      for (i = 0, ancestors = Opal.ancestors(other), length = ancestors.length; i < length; i++) {
+        if (ancestors[i] === self) {
+          return false;
+        }
+      }
+
+      return nil;
+    }
+  end
+
+  def <=(other)
+    equal?(other) || self < other
+  end
+
+  def >(other)
+    unless ::Module === other
+      ::Kernel.raise ::TypeError, 'compared with non class/module'
+    end
+
+    other < self
+  end
+
+  def >=(other)
+    equal?(other) || self > other
+  end
+
+  def <=>(other)
+    %x{
+      if (self === other) {
+        return 0;
+      }
+    }
+
+    unless ::Module === other
+      return nil
+    end
+
+    lt = self < other
+    return nil if lt.nil?
+    lt ? -1 : 1
+  end
+
+  def alias_method(newname, oldname)
+    newname = `$coerce_to(newname, #{::String}, 'to_str')`
+    oldname = `$coerce_to(oldname, #{::String}, 'to_str')`
+    `Opal.alias(self, newname, oldname)`
+
+    self
+  end
+
+  def alias_native(mid, jsid = mid)
+    `Opal.alias_native(self, mid, jsid)`
+
+    self
+  end
+
+  def ancestors
+    `Opal.ancestors(self)`
+  end
+
+  def append_features(includer)
+    `Opal.append_features(self, includer)`
+    self
+  end
+
+  def attr_accessor(*names)
+    attr_reader(*names)
+    attr_writer(*names)
+  end
+
+  def attr(*args)
+    %x{
+      if (args.length == 2 && (args[1] === true || args[1] === false)) {
+        #{warn 'optional boolean argument is obsoleted', uplevel: 1}
+
+        args[1] ? #{attr_accessor(`args[0]`)} : #{attr_reader(`args[0]`)};
+        return nil;
+      }
+    }
+
+    attr_reader(*args)
+  end
+
+  def attr_reader(*names)
+    %x{
+      var proto = self.$$prototype;
+
+      for (var i = names.length - 1; i >= 0; i--) {
+        var name = names[i],
+            id   = '$' + name,
+            ivar = Opal.ivar(name);
+
+        // the closure here is needed because name will change at the next
+        // cycle, I wish we could use let.
+        var body = (function(ivar) {
+          return function() {
+            if (this[ivar] == null) {
+              return nil;
+            }
+            else {
+              return this[ivar];
+            }
+          };
+        })(ivar);
+
+        // initialize the instance variable as nil
+        Opal.prop(proto, ivar, nil);
+
+        body.$$parameters = [];
+        body.$$arity = 0;
+
+        Opal.defn(self, id, body);
+      }
+    }
+
+    nil
+  end
+
+  def attr_writer(*names)
+    %x{
+      var proto = self.$$prototype;
+
+      for (var i = names.length - 1; i >= 0; i--) {
+        var name = names[i],
+            id   = '$' + name + '=',
+            ivar = Opal.ivar(name);
+
+        // the closure here is needed because name will change at the next
+        // cycle, I wish we could use let.
+        var body = (function(ivar){
+          return function(value) {
+            return this[ivar] = value;
+          }
+        })(ivar);
+
+        body.$$parameters = [['req']];
+        body.$$arity = 1;
+
+        // initialize the instance variable as nil
+        Opal.prop(proto, ivar, nil);
+
+        Opal.defn(self, id, body);
+      }
+    }
+
+    nil
+  end
+
+  def autoload(const, path)
+    %x{
+      if (!#{Opal.const_name?(const)}) {
+        #{::Kernel.raise ::NameError, "autoload must be constant name: #{const}"}
+      }
+
+      if (path == "") {
+        #{::Kernel.raise ::ArgumentError, 'empty file name'}
+      }
+
+      if (!self.$$const.hasOwnProperty(#{const})) {
+        if (!self.$$autoload) {
+          self.$$autoload = {};
+        }
+        Opal.const_cache_version++;
+        self.$$autoload[#{const}] = { path: #{path}, loaded: false, required: false, success: false, exception: false };
+      }
+      return nil;
+    }
+  end
+
+  def autoload?(const)
+    %x{
+      if (self.$$autoload && self.$$autoload[#{const}] && !self.$$autoload[#{const}].required && !self.$$autoload[#{const}].success) {
+        return self.$$autoload[#{const}].path;
+      }
+
+      var ancestors = self.$ancestors();
+
+      for (var i = 0, length = ancestors.length; i < length; i++) {
+        if (ancestors[i].$$autoload && ancestors[i].$$autoload[#{const}] && !ancestors[i].$$autoload[#{const}].required && !ancestors[i].$$autoload[#{const}].success) {
+          return ancestors[i].$$autoload[#{const}].path;
+        }
+      }
+      return nil;
+    }
+  end
+
+  def class_variables
+    `Object.keys(Opal.class_variables(self))`
+  end
+
+  def class_variable_get(name)
+    name = ::Opal.class_variable_name!(name)
+
+    `Opal.class_variable_get(self, name, false)`
+  end
+
+  def class_variable_set(name, value)
+    name = ::Opal.class_variable_name!(name)
+
+    `Opal.class_variable_set(self, name, value)`
+  end
+
+  def class_variable_defined?(name)
+    name = ::Opal.class_variable_name!(name)
+
+    `Opal.class_variables(self).hasOwnProperty(name)`
+  end
+
+  def remove_class_variable(name)
+    name = ::Opal.class_variable_name!(name)
+
+    %x{
+      if (Opal.hasOwnProperty.call(self.$$cvars, name)) {
+        var value = self.$$cvars[name];
+        delete self.$$cvars[name];
+        return value;
+      } else {
+        #{::Kernel.raise ::NameError, "cannot remove #{name} for #{self}"}
+      }
+    }
+  end
+
+  def constants(inherit = true)
+    `Opal.constants(self, inherit)`
+  end
+
+  def self.constants(inherit = undefined)
+    %x{
+      if (inherit == null) {
+        var nesting = (self.$$nesting || []).concat($Object),
+            constant, constants = {},
+            i, ii;
+
+        for(i = 0, ii = nesting.length; i < ii; i++) {
+          for (constant in nesting[i].$$const) {
+            constants[constant] = true;
+          }
+        }
+        return Object.keys(constants);
+      } else {
+        return Opal.constants(self, inherit)
+      }
+    }
+  end
+
+  def self.nesting
+    `self.$$nesting || []`
+  end
+
+  # check for constant within current scope
+  # if inherit is true or self is Object, will also check ancestors
+  def const_defined?(name, inherit = true)
+    name = Opal.const_name!(name)
+
+    ::Kernel.raise ::NameError.new("wrong constant name #{name}", name) unless name =~ ::Opal::CONST_NAME_REGEXP
+
+    %x{
+      var module, modules = [self], module_constants, i, ii;
+
+      // Add up ancestors if inherit is true
+      if (inherit) {
+        modules = modules.concat(Opal.ancestors(self));
+
+        // Add Object's ancestors if it's a module – modules have no ancestors otherwise
+        if (self.$$is_module) {
+          modules = modules.concat([$Object]).concat(Opal.ancestors($Object));
+        }
+      }
+
+      for (i = 0, ii = modules.length; i < ii; i++) {
+        module = modules[i];
+        if (module.$$const[#{name}] != null) { return true; }
+        if (
+          module.$$autoload &&
+          module.$$autoload[#{name}] &&
+          !module.$$autoload[#{name}].required &&
+          !module.$$autoload[#{name}].success
+        ) {
+          return true;
+        }
+      }
+
+      return false;
+    }
+  end
+
+  def const_get(name, inherit = true)
+    name = Opal.const_name!(name)
+
+    %x{
+      if (name.indexOf('::') === 0 && name !== '::'){
+        name = name.slice(2);
+      }
+    }
+
+    if `name.indexOf('::') != -1 && name != '::'`
+      return name.split('::').inject(self) { |o, c| o.const_get(c) }
+    end
+
+    ::Kernel.raise ::NameError.new("wrong constant name #{name}", name) unless name =~ ::Opal::CONST_NAME_REGEXP
+
+    %x{
+      if (inherit) {
+        return Opal.$$([self], name);
+      } else {
+        return Opal.const_get_local(self, name);
+      }
+    }
+  end
+
+  def const_missing(name)
+    full_const_name = self == ::Object ? name : "#{self}::#{name}"
+
+    ::Kernel.raise ::NameError.new("uninitialized constant #{full_const_name}", name)
+  end
+
+  def const_set(name, value)
+    name = ::Opal.const_name!(name)
+
+    if name !~ ::Opal::CONST_NAME_REGEXP || name.start_with?('::')
+      ::Kernel.raise ::NameError.new("wrong constant name #{name}", name)
+    end
+
+    `$const_set(self, name, value)`
+
+    value
+  end
+
+  def public_constant(const_name)
+  end
+
+  def define_method(name, method = undefined, &block)
+    %x{
+      if (method === undefined && block === nil)
+        #{::Kernel.raise ::ArgumentError, 'tried to create a Proc object without a block'}
+    }
+
+    block ||= case method
+              when ::Proc
+                method
+
+              when ::Method
+                `#{method.to_proc}.$$unbound`
+
+              when ::UnboundMethod
+                ->(*args) {
+                  bound = method.bind(self)
+                  bound.call(*args)
+                }
+
+              else
+                ::Kernel.raise ::TypeError, "wrong argument type #{block.class} (expected Proc/Method)"
+              end
+
+    %x{
+      var id = '$' + name;
+
+      block.$$jsid        = name;
+      block.$$s           = null;
+      block.$$def         = block;
+      block.$$define_meth = true;
+
+      return Opal.defn(self, id, block);
+    }
+  end
+
+  def remove_method(*names)
+    %x{
+      for (var i = 0, length = names.length; i < length; i++) {
+        Opal.rdef(self, "$" + names[i]);
+      }
+    }
+
+    self
+  end
+
+  def singleton_class?
+    `!!self.$$is_singleton`
+  end
+
+  def include(*mods)
+    %x{
+      for (var i = mods.length - 1; i >= 0; i--) {
+        var mod = mods[i];
+
+        if (!mod.$$is_module) {
+          #{::Kernel.raise ::TypeError, "wrong argument type #{`mod`.class} (expected Module)"};
+        }
+
+        #{`mod`.append_features self};
+        #{`mod`.included self};
+      }
+    }
+
+    self
+  end
+
+  def included_modules
+    `Opal.included_modules(self)`
+  end
+
+  def include?(mod)
+    %x{
+      if (!mod.$$is_module) {
+        #{::Kernel.raise ::TypeError, "wrong argument type #{`mod`.class} (expected Module)"};
+      }
+
+      var i, ii, mod2, ancestors = Opal.ancestors(self);
+
+      for (i = 0, ii = ancestors.length; i < ii; i++) {
+        mod2 = ancestors[i];
+        if (mod2 === mod && mod2 !== self) {
+          return true;
+        }
+      }
+
+      return false;
+    }
+  end
+
+  def instance_method(name)
+    %x{
+      var meth = self.$$prototype['$' + name];
+
+      if (!meth || meth.$$stub) {
+        #{::Kernel.raise ::NameError.new("undefined method `#{name}' for class `#{self.name}'", name)};
+      }
+
+      return #{::UnboundMethod.new(self, `meth.$$owner || #{self}`, `meth`, name)};
+    }
+  end
+
+  def instance_methods(include_super = true)
+    %x{
+      if ($truthy(#{include_super})) {
+        return Opal.instance_methods(self);
+      } else {
+        return Opal.own_instance_methods(self);
+      }
+    }
+  end
+
+  def included(mod)
+  end
+
+  def extended(mod)
+  end
+
+  def extend_object(object)
+  end
+
+  def method_added(*)
+  end
+
+  def method_removed(*)
+  end
+
+  def method_undefined(*)
+  end
+
+  def module_eval(*args, &block)
+    if block.nil? && `!!Opal.compile`
+      ::Kernel.raise ::ArgumentError, 'wrong number of arguments (0 for 1..3)' unless (1..3).cover? args.size
+
+      string, file, _lineno = *args
+      default_eval_options = { file: (file || '(eval)'), eval: true }
+      compiling_options = __OPAL_COMPILER_CONFIG__.merge(default_eval_options)
+      compiled = ::Opal.compile string, compiling_options
+      block = ::Kernel.proc do
+        %x{new Function("Opal,self", "return " + compiled)(Opal, self)}
+      end
+    elsif args.any?
+      ::Kernel.raise ::ArgumentError, "wrong number of arguments (#{args.size} for 0)" \
+                                      "\n\n  NOTE:If you want to enable passing a String argument please add \"require 'opal-parser'\" to your script\n"
+    end
+
+    %x{
+      var old = block.$$s,
+          result;
+
+      block.$$s = null;
+      result = block.apply(self, [self]);
+      block.$$s = old;
+
+      return result;
+    }
+  end
+
+  def module_exec(*args, &block)
+    %x{
+      if (block === nil) {
+        #{::Kernel.raise ::LocalJumpError, 'no block given'}
+      }
+
+      var block_self = block.$$s, result;
+
+      block.$$s = null;
+      result = block.apply(self, args);
+      block.$$s = block_self;
+
+      return result;
+    }
+  end
+
+  def method_defined?(method)
+    %x{
+      var body = self.$$prototype['$' + method];
+      return (!!body) && !body.$$stub;
+    }
+  end
+
+  def module_function(*methods)
+    %x{
+      if (methods.length === 0) {
+        self.$$module_function = true;
+        return nil;
+      }
+      else {
+        for (var i = 0, length = methods.length; i < length; i++) {
+          var meth = methods[i],
+              id   = '$' + meth,
+              func = self.$$prototype[id];
+
+          Opal.defs(self, id, func);
+        }
+        return methods.length === 1 ? methods[0] : methods;
+      }
+
+      return self;
+    }
+  end
+
+  def name
+    %x{
+      if (self.$$full_name) {
+        return self.$$full_name;
+      }
+
+      var result = [], base = self;
+
+      while (base) {
+        // Give up if any of the ancestors is unnamed
+        if (base.$$name === nil || base.$$name == null) return nil;
+
+        result.unshift(base.$$name);
+
+        base = base.$$base_module;
+
+        if (base === $Object) {
+          break;
+        }
+      }
+
+      if (result.length === 0) {
+        return nil;
+      }
+
+      return self.$$full_name = result.join('::');
+    }
+  end
+
+  def prepend(*mods)
+    %x{
+      if (mods.length === 0) {
+        #{::Kernel.raise ::ArgumentError, 'wrong number of arguments (given 0, expected 1+)'}
+      }
+
+      for (var i = mods.length - 1; i >= 0; i--) {
+        var mod = mods[i];
+
+        if (!mod.$$is_module) {
+          #{::Kernel.raise ::TypeError, "wrong argument type #{`mod`.class} (expected Module)"};
+        }
+
+        #{`mod`.prepend_features self};
+        #{`mod`.prepended self};
+      }
+    }
+
+    self
+  end
+
+  def prepend_features(prepender)
+    %x{
+      if (!self.$$is_module) {
+        #{::Kernel.raise ::TypeError, "wrong argument type #{self.class} (expected Module)"};
+      }
+
+      Opal.prepend_features(self, prepender)
+    }
+    self
+  end
+
+  def prepended(mod)
+  end
+
+  def remove_const(name)
+    `Opal.const_remove(self, name)`
+  end
+
+  def to_s
+    `Opal.Module.$name.call(self)` || "#<#{`self.$$is_module ? 'Module' : 'Class'`}:0x#{__id__.to_s(16)}>"
+  end
+
+  def undef_method(*names)
+    %x{
+      for (var i = 0, length = names.length; i < length; i++) {
+        Opal.udef(self, "$" + names[i]);
+      }
+    }
+
+    self
+  end
+
+  def instance_variables
+    consts = constants
+    %x{
+      var result = [];
+
+      for (var name in self) {
+        if (self.hasOwnProperty(name) && name.charAt(0) !== '$' && name !== 'constructor' && !#{consts.include?(`name`)}) {
+          result.push('@' + name);
+        }
+      }
+
+      return result;
+    }
+  end
+
+  def dup
+    copy = super
+    copy.copy_class_variables(self)
+    copy.copy_constants(self)
+    copy
+  end
+
+  def copy_class_variables(other)
+    %x{
+      for (var name in other.$$cvars) {
+        self.$$cvars[name] = other.$$cvars[name];
+      }
+    }
+  end
+
+  def copy_constants(other)
+    %x{
+      var name, other_constants = other.$$const;
+
+      for (name in other_constants) {
+        $const_set(self, name, other_constants[name]);
+      }
+    }
+  end
+
+  def refine(klass, &block)
+    refinement_module, m, klass_id = self, nil, nil
+    %x{
+      klass_id = Opal.id(klass);
+      if (typeof self.$$refine_modules === "undefined") {
+        self.$$refine_modules = {};
+      }
+      if (typeof self.$$refine_modules[klass_id] === "undefined") {
+        m = self.$$refine_modules[klass_id] = #{::Refinement.new};
+      }
+      else {
+        m = self.$$refine_modules[klass_id];
+      }
+      m.refinement_module = refinement_module
+      m.refined_class = klass
+    }
+    m.class_exec(&block)
+    m
+  end
+
+  # Compiler overrides this method
+  def using(mod)
+    ::Kernel.raise 'Module#using is not permitted in methods'
+  end
+
+  alias class_eval module_eval
+  alias class_exec module_exec
+  alias inspect to_s
+end
+
+class ::Refinement < ::Module
+  def inspect
+    if @refinement_module
+      "#<refinement:#{@refined_class.inspect}@#{@refinement_module.inspect}>"
+    else
+      super
+    end
+  end
+end
diff --git a/opal/corelib/nil.rb b/opal/corelib/nil.rb
new file mode 100644
index 00000000..61415200
--- /dev/null
+++ b/opal/corelib/nil.rb
@@ -0,0 +1,86 @@
+class ::NilClass
+  `self.$$prototype.$$meta = #{self}`
+
+  class << self
+    def allocate
+      ::Kernel.raise ::TypeError, "allocator undefined for #{name}"
+    end
+
+    undef :new
+  end
+
+  def !
+    true
+  end
+
+  def &(other)
+    false
+  end
+
+  def |(other)
+    `other !== false && other !== nil`
+  end
+
+  def ^(other)
+    `other !== false && other !== nil`
+  end
+
+  def ==(other)
+    `other === nil`
+  end
+
+  def dup
+    nil
+  end
+
+  def clone(freeze: true)
+    nil
+  end
+
+  def inspect
+    'nil'
+  end
+
+  def nil?
+    true
+  end
+
+  def singleton_class
+    ::NilClass
+  end
+
+  def to_a
+    []
+  end
+
+  def to_h
+    `Opal.hash()`
+  end
+
+  def to_i
+    0
+  end
+
+  def to_s
+    ''
+  end
+
+  def to_c
+    ::Complex.new(0, 0)
+  end
+
+  def rationalize(*args)
+    ::Kernel.raise ::ArgumentError if args.length > 1
+    ::Kernel.Rational(0, 1)
+  end
+
+  def to_r
+    ::Kernel.Rational(0, 1)
+  end
+
+  def instance_variables
+    []
+  end
+
+  alias to_f to_i
+end
diff --git a/opal/corelib/number.rb b/opal/corelib/number.rb
new file mode 100644
index 00000000..8dd24184
--- /dev/null
+++ b/opal/corelib/number.rb
@@ -0,0 +1,940 @@
+require 'corelib/numeric'
+
+class ::Number < ::Numeric
+  ::Opal.bridge(`Number`, self)
+  `Opal.prop(self.$$prototype, '$$is_number', true)`
+  `self.$$is_number_class = true`
+
+  class << self
+    def allocate
+      ::Kernel.raise ::TypeError, "allocator undefined for #{name}"
+    end
+
+    undef :new
+  end
+
+  def coerce(other)
+    %x{
+      if (other === nil) {
+        #{::Kernel.raise ::TypeError, "can't convert #{other.class} into Float"};
+      }
+      else if (other.$$is_string) {
+        return [#{::Kernel.Float(other)}, self];
+      }
+      else if (#{other.respond_to?(:to_f)}) {
+        return [#{::Opal.coerce_to!(other, ::Float, :to_f)}, self];
+      }
+      else if (other.$$is_number) {
+        return [other, self];
+      }
+      else {
+        #{::Kernel.raise ::TypeError, "can't convert #{other.class} into Float"};
+      }
+    }
+  end
+
+  def __id__
+    `(self * 2) + 1`
+  end
+
+  def +(other)
+    %x{
+      if (other.$$is_number) {
+        return self + other;
+      }
+      else {
+        return #{__coerced__ :+, other};
+      }
+    }
+  end
+
+  def -(other)
+    %x{
+      if (other.$$is_number) {
+        return self - other;
+      }
+      else {
+        return #{__coerced__ :-, other};
+      }
+    }
+  end
+
+  def *(other)
+    %x{
+      if (other.$$is_number) {
+        return self * other;
+      }
+      else {
+        return #{__coerced__ :*, other};
+      }
+    }
+  end
+
+  def /(other)
+    %x{
+      if (other.$$is_number) {
+        return self / other;
+      }
+      else {
+        return #{__coerced__ :/, other};
+      }
+    }
+  end
+
+  def %(other)
+    %x{
+      if (other.$$is_number) {
+        if (other == -Infinity) {
+          return other;
+        }
+        else if (other == 0) {
+          #{::Kernel.raise ::ZeroDivisionError, 'divided by 0'};
+        }
+        else if (other < 0 || self < 0) {
+          return (self % other + other) % other;
+        }
+        else {
+          return self % other;
+        }
+      }
+      else {
+        return #{__coerced__ :%, other};
+      }
+    }
+  end
+
+  def &(other)
+    %x{
+      if (other.$$is_number) {
+        return self & other;
+      }
+      else {
+        return #{__coerced__ :&, other};
+      }
+    }
+  end
+
+  def |(other)
+    %x{
+      if (other.$$is_number) {
+        return self | other;
+      }
+      else {
+        return #{__coerced__ :|, other};
+      }
+    }
+  end
+
+  def ^(other)
+    %x{
+      if (other.$$is_number) {
+        return self ^ other;
+      }
+      else {
+        return #{__coerced__ :^, other};
+      }
+    }
+  end
+
+  def <(other)
+    %x{
+      if (other.$$is_number) {
+        return self < other;
+      }
+      else {
+        return #{__coerced__ :<, other};
+      }
+    }
+  end
+
+  def <=(other)
+    %x{
+      if (other.$$is_number) {
+        return self <= other;
+      }
+      else {
+        return #{__coerced__ :<=, other};
+      }
+    }
+  end
+
+  def >(other)
+    %x{
+      if (other.$$is_number) {
+        return self > other;
+      }
+      else {
+        return #{__coerced__ :>, other};
+      }
+    }
+  end
+
+  def >=(other)
+    %x{
+      if (other.$$is_number) {
+        return self >= other;
+      }
+      else {
+        return #{__coerced__ :>=, other};
+      }
+    }
+  end
+
+  # Compute the result of the spaceship operator inside its own function so it
+  # can be optimized despite a try/finally construct.
+  %x{
+    var spaceship_operator = function(self, other) {
+      if (other.$$is_number) {
+        if (isNaN(self) || isNaN(other)) {
+          return nil;
+        }
+
+        if (self > other) {
+          return 1;
+        } else if (self < other) {
+          return -1;
+        } else {
+          return 0;
+        }
+      }
+      else {
+        return #{__coerced__ :<=>, `other`};
+      }
+    }
+  }
+
+  def <=>(other)
+    `spaceship_operator(self, other)`
+  rescue ::ArgumentError
+    nil
+  end
+
+  def <<(count)
+    count = ::Opal.coerce_to! count, ::Integer, :to_int
+
+    `#{count} > 0 ? self << #{count} : self >> -#{count}`
+  end
+
+  def >>(count)
+    count = ::Opal.coerce_to! count, ::Integer, :to_int
+
+    `#{count} > 0 ? self >> #{count} : self << -#{count}`
+  end
+
+  def [](bit)
+    bit = ::Opal.coerce_to! bit, ::Integer, :to_int
+
+    %x{
+      if (#{bit} < 0) {
+        return 0;
+      }
+      if (#{bit} >= 32) {
+        return #{ self } < 0 ? 1 : 0;
+      }
+      return (self >> #{bit}) & 1;
+    }
+  end
+
+  def +@
+    `+self`
+  end
+
+  def -@
+    `-self`
+  end
+
+  def ~
+    `~self`
+  end
+
+  def **(other)
+    if ::Integer === other
+      if !(::Integer === self) || other > 0
+        `Math.pow(self, other)`
+      else
+        ::Rational.new(self, 1)**other
+      end
+    elsif self < 0 && (::Float === other || ::Rational === other)
+      ::Complex.new(self, 0)**other.to_f
+    elsif `other.$$is_number != null`
+      `Math.pow(self, other)`
+    else
+      __coerced__ :**, other
+    end
+  end
+
+  def ==(other)
+    %x{
+      if (other.$$is_number) {
+        return self.valueOf() === other.valueOf();
+      }
+      else if (#{other.respond_to? :==}) {
+        return #{other == self};
+      }
+      else {
+        return false;
+      }
+    }
+  end
+
+  alias === ==
+
+  def abs
+    `Math.abs(self)`
+  end
+
+  def abs2
+    `Math.abs(self * self)`
+  end
+
+  def allbits?(mask)
+    mask = ::Opal.coerce_to! mask, ::Integer, :to_int
+    `(self & mask) == mask`
+  end
+
+  def anybits?(mask)
+    mask = ::Opal.coerce_to! mask, ::Integer, :to_int
+    `(self & mask) !== 0`
+  end
+
+  def angle
+    return self if nan?
+
+    %x{
+      if (self == 0) {
+        if (1 / self > 0) {
+          return 0;
+        }
+        else {
+          return Math.PI;
+        }
+      }
+      else if (self < 0) {
+        return Math.PI;
+      }
+      else {
+        return 0;
+      }
+    }
+  end
+
+  def bit_length
+    unless ::Integer === self
+      ::Kernel.raise ::NoMethodError.new("undefined method `bit_length` for #{self}:Float", 'bit_length')
+    end
+
+    %x{
+      if (self === 0 || self === -1) {
+        return 0;
+      }
+
+      var result = 0,
+          value  = self < 0 ? ~self : self;
+
+      while (value != 0) {
+        result   += 1;
+        value  >>>= 1;
+      }
+
+      return result;
+    }
+  end
+
+  def ceil(ndigits = 0)
+    %x{
+      var f = #{to_f};
+
+      if (f % 1 === 0 && ndigits >= 0) {
+        return f;
+      }
+
+      var factor = Math.pow(10, ndigits),
+          result = Math.ceil(f * factor) / factor;
+
+      if (f % 1 === 0) {
+        result = Math.round(result);
+      }
+
+      return result;
+    }
+  end
+
+  def chr(encoding = undefined)
+    `Opal.enc(String.fromCharCode(self), encoding || "BINARY")`
+  end
+
+  def denominator
+    if nan? || infinite?
+      1
+    else
+      super
+    end
+  end
+
+  def downto(stop, &block)
+    unless block_given?
+      return enum_for(:downto, stop) do
+        ::Kernel.raise ::ArgumentError, "comparison of #{self.class} with #{stop.class} failed" unless ::Numeric === stop
+        stop > self ? 0 : self - stop + 1
+      end
+    end
+
+    %x{
+      if (!stop.$$is_number) {
+        #{::Kernel.raise ::ArgumentError, "comparison of #{self.class} with #{stop.class} failed"}
+      }
+      for (var i = self; i >= stop; i--) {
+        block(i);
+      }
+    }
+
+    self
+  end
+
+  def equal?(other)
+    self == other || `isNaN(self) && isNaN(other)`
+  end
+
+  def even?
+    `self % 2 === 0`
+  end
+
+  def floor(ndigits = 0)
+    %x{
+      var f = #{to_f};
+
+      if (f % 1 === 0 && ndigits >= 0) {
+        return f;
+      }
+
+      var factor = Math.pow(10, ndigits),
+          result = Math.floor(f * factor) / factor;
+
+      if (f % 1 === 0) {
+        result = Math.round(result);
+      }
+
+      return result;
+    }
+  end
+
+  def gcd(other)
+    unless ::Integer === other
+      ::Kernel.raise ::TypeError, 'not an integer'
+    end
+
+    %x{
+      var min = Math.abs(self),
+          max = Math.abs(other);
+
+      while (min > 0) {
+        var tmp = min;
+
+        min = max % min;
+        max = tmp;
+      }
+
+      return max;
+    }
+  end
+
+  def gcdlcm(other)
+    [gcd(other), lcm(other)]
+  end
+
+  def integer?
+    `self % 1 === 0`
+  end
+
+  def is_a?(klass)
+    return true if klass == ::Integer && ::Integer === self
+    return true if klass == ::Integer && ::Integer === self
+    return true if klass == ::Float && ::Float === self
+
+    super
+  end
+
+  def instance_of?(klass)
+    return true if klass == ::Integer && ::Integer === self
+    return true if klass == ::Integer && ::Integer === self
+    return true if klass == ::Float && ::Float === self
+
+    super
+  end
+
+  def lcm(other)
+    unless ::Integer === other
+      ::Kernel.raise ::TypeError, 'not an integer'
+    end
+
+    %x{
+      if (self == 0 || other == 0) {
+        return 0;
+      }
+      else {
+        return Math.abs(self * other / #{gcd(other)});
+      }
+    }
+  end
+
+  def next
+    `self + 1`
+  end
+
+  def nobits?(mask)
+    mask = ::Opal.coerce_to! mask, ::Integer, :to_int
+    `(self & mask) == 0`
+  end
+
+  def nonzero?
+    `self == 0 ? nil : self`
+  end
+
+  def numerator
+    if nan? || infinite?
+      self
+    else
+      super
+    end
+  end
+
+  def odd?
+    `self % 2 !== 0`
+  end
+
+  def ord
+    self
+  end
+
+  def pow(b, m = undefined)
+    %x{
+      if (self == 0) {
+        #{::Kernel.raise ::ZeroDivisionError, 'divided by 0'}
+      }
+
+      if (m === undefined) {
+        return #{self**b};
+      } else {
+        if (!(#{::Integer === b})) {
+          #{::Kernel.raise ::TypeError, 'Integer#pow() 2nd argument not allowed unless a 1st argument is integer'}
+        }
+
+        if (b < 0) {
+          #{::Kernel.raise ::TypeError, 'Integer#pow() 1st argument cannot be negative when 2nd argument specified'}
+        }
+
+        if (!(#{::Integer === m})) {
+          #{::Kernel.raise ::TypeError, 'Integer#pow() 2nd argument not allowed unless all arguments are integers'}
+        }
+
+        if (m === 0) {
+          #{::Kernel.raise ::ZeroDivisionError, 'divided by 0'}
+        }
+
+        return #{(self**b) % m}
+      }
+    }
+  end
+
+  def pred
+    `self - 1`
+  end
+
+  def quo(other)
+    if ::Integer === self
+      super
+    else
+      self / other
+    end
+  end
+
+  def rationalize(eps = undefined)
+    %x{
+      if (arguments.length > 1) {
+        #{::Kernel.raise ::ArgumentError, "wrong number of arguments (#{`arguments.length`} for 0..1)"};
+      }
+    }
+
+    if ::Integer === self
+      ::Rational.new(self, 1)
+    elsif infinite?
+      ::Kernel.raise ::FloatDomainError, 'Infinity'
+    elsif nan?
+      ::Kernel.raise ::FloatDomainError, 'NaN'
+    elsif `eps == null`
+      f, n  = ::Math.frexp self
+      f     = ::Math.ldexp(f, ::Float::MANT_DIG).to_i
+      n    -= ::Float::MANT_DIG
+
+      ::Rational.new(2 * f, 1 << (1 - n)).rationalize(::Rational.new(1, 1 << (1 - n)))
+    else
+      to_r.rationalize(eps)
+    end
+  end
+
+  def remainder(y)
+    self - y * (self / y).truncate
+  end
+
+  def round(ndigits = undefined)
+    if ::Integer === self
+      if `ndigits == null`
+        return self
+      end
+
+      if ::Float === ndigits && ndigits.infinite?
+        ::Kernel.raise ::RangeError, 'Infinity'
+      end
+
+      ndigits = ::Opal.coerce_to!(ndigits, ::Integer, :to_int)
+
+      if ndigits < ::Integer::MIN
+        ::Kernel.raise ::RangeError, 'out of bounds'
+      end
+
+      if `ndigits >= 0`
+        return self
+      end
+
+      ndigits = -ndigits
+
+      %x{
+        if (0.415241 * ndigits - 0.125 > #{size}) {
+          return 0;
+        }
+
+        var f = Math.pow(10, ndigits),
+            x = Math.floor((Math.abs(self) + f / 2) / f) * f;
+
+        return self < 0 ? -x : x;
+      }
+    else
+      if nan? && `ndigits == null`
+        ::Kernel.raise ::FloatDomainError, 'NaN'
+      end
+
+      ndigits = ::Opal.coerce_to!(`ndigits || 0`, ::Integer, :to_int)
+
+      if ndigits <= 0
+        if nan?
+          ::Kernel.raise ::RangeError, 'NaN'
+        elsif infinite?
+          ::Kernel.raise ::FloatDomainError, 'Infinity'
+        end
+      elsif ndigits == 0
+        return `Math.round(self)`
+      elsif nan? || infinite?
+        return self
+      end
+
+      _, exp = ::Math.frexp(self)
+
+      if ndigits >= (::Float::DIG + 2) - (exp > 0 ? exp / 4 : exp / 3 - 1)
+        return self
+      end
+
+      if ndigits < -(exp > 0 ? exp / 3 + 1 : exp / 4)
+        return 0
+      end
+
+      `Math.round(self * Math.pow(10, ndigits)) / Math.pow(10, ndigits)`
+    end
+  end
+
+  def times(&block)
+    return enum_for(:times) { self } unless block
+
+    %x{
+      for (var i = 0; i < self; i++) {
+        block(i);
+      }
+    }
+
+    self
+  end
+
+  def to_f
+    self
+  end
+
+  def to_i
+    `self < 0 ? Math.ceil(self) : Math.floor(self)`
+  end
+
+  def to_r
+    if ::Integer === self
+      ::Rational.new(self, 1)
+    else
+      f, e  = ::Math.frexp(self)
+      f     = ::Math.ldexp(f, ::Float::MANT_DIG).to_i
+      e    -= ::Float::MANT_DIG
+
+      (f * (::Float::RADIX**e)).to_r
+    end
+  end
+
+  def to_s(base = 10)
+    base = ::Opal.coerce_to! base, ::Integer, :to_int
+
+    if base < 2 || base > 36
+      ::Kernel.raise ::ArgumentError, "invalid radix #{base}"
+    end
+
+    # Don't lose the negative zero
+    if self == 0 && `1/self === -Infinity`
+      return '-0.0'
+    end
+
+    `self.toString(base)`
+  end
+
+  def truncate(ndigits = 0)
+    %x{
+      var f = #{to_f};
+
+      if (f % 1 === 0 && ndigits >= 0) {
+        return f;
+      }
+
+      var factor = Math.pow(10, ndigits),
+          result = parseInt(f * factor, 10) / factor;
+
+      if (f % 1 === 0) {
+        result = Math.round(result);
+      }
+
+      return result;
+    }
+  end
+
+  def digits(base = 10)
+    if self < 0
+      ::Kernel.raise ::Math::DomainError, 'out of domain'
+    end
+
+    base = ::Opal.coerce_to! base, ::Integer, :to_int
+
+    if base < 2
+      ::Kernel.raise ::ArgumentError, "invalid radix #{base}"
+    end
+
+    %x{
+      if (self != parseInt(self)) #{::Kernel.raise ::NoMethodError, "undefined method `digits' for #{inspect}"}
+
+      var value = self, result = [];
+
+      if (self == 0) {
+        return [0];
+      }
+
+      while (value != 0) {
+        result.push(value % base);
+        value = parseInt(value / base, 10);
+      }
+
+      return result;
+    }
+  end
+
+  def divmod(other)
+    if nan? || other.nan?
+      ::Kernel.raise ::FloatDomainError, 'NaN'
+    elsif infinite?
+      ::Kernel.raise ::FloatDomainError, 'Infinity'
+    else
+      super
+    end
+  end
+
+  def upto(stop, &block)
+    unless block_given?
+      return enum_for(:upto, stop) do
+        ::Kernel.raise ::ArgumentError, "comparison of #{self.class} with #{stop.class} failed" unless ::Numeric === stop
+        stop < self ? 0 : stop - self + 1
+      end
+    end
+
+    %x{
+      if (!stop.$$is_number) {
+        #{::Kernel.raise ::ArgumentError, "comparison of #{self.class} with #{stop.class} failed"}
+      }
+      for (var i = self; i <= stop; i++) {
+        block(i);
+      }
+    }
+
+    self
+  end
+
+  def zero?
+    `self == 0`
+  end
+
+  # Since bitwise operations are 32 bit, declare it to be so.
+  def size
+    4
+  end
+
+  def nan?
+    `isNaN(self)`
+  end
+
+  def finite?
+    `self != Infinity && self != -Infinity && !isNaN(self)`
+  end
+
+  def infinite?
+    %x{
+      if (self == Infinity) {
+        return +1;
+      }
+      else if (self == -Infinity) {
+        return -1;
+      }
+      else {
+        return nil;
+      }
+    }
+  end
+
+  def positive?
+    `self != 0 && (self == Infinity || 1 / self > 0)`
+  end
+
+  def negative?
+    `self == -Infinity || 1 / self < 0`
+  end
+
+  %x{
+    function numberToUint8Array(num) {
+      var uint8array = new Uint8Array(8);
+      new DataView(uint8array.buffer).setFloat64(0, num, true);
+      return uint8array;
+    }
+
+    function uint8ArrayToNumber(arr) {
+      return new DataView(arr.buffer).getFloat64(0, true);
+    }
+
+    function incrementNumberBit(num) {
+      var arr = numberToUint8Array(num);
+      for (var i = 0; i < arr.length; i++) {
+        if (arr[i] === 0xff) {
+          arr[i] = 0;
+        } else {
+          arr[i]++;
+          break;
+        }
+      }
+      return uint8ArrayToNumber(arr);
+    }
+
+    function decrementNumberBit(num) {
+      var arr = numberToUint8Array(num);
+      for (var i = 0; i < arr.length; i++) {
+        if (arr[i] === 0) {
+          arr[i] = 0xff;
+        } else {
+          arr[i]--;
+          break;
+        }
+      }
+      return uint8ArrayToNumber(arr);
+    }
+  }
+
+  def next_float
+    return ::Float::INFINITY if self == ::Float::INFINITY
+    return ::Float::NAN if nan?
+
+    if self >= 0
+      # Math.abs() is needed to handle -0.0
+      `incrementNumberBit(Math.abs(self))`
+    else
+      `decrementNumberBit(self)`
+    end
+  end
+
+  def prev_float
+    return -::Float::INFINITY if self == -::Float::INFINITY
+    return ::Float::NAN if nan?
+
+    if self > 0
+      `decrementNumberBit(self)`
+    else
+      `-incrementNumberBit(Math.abs(self))`
+    end
+  end
+
+  alias arg angle
+  alias eql? ==
+  alias fdiv /
+  alias inspect to_s
+  alias kind_of? is_a?
+  alias magnitude abs
+  alias modulo %
+  alias object_id __id__
+  alias phase angle
+  alias succ next
+  alias to_int to_i
+end
+
+::Fixnum = ::Number
+
+class ::Integer < ::Numeric
+  `self.$$is_number_class = true`
+  `self.$$is_integer_class = true`
+
+  class << self
+    def allocate
+      ::Kernel.raise ::TypeError, "allocator undefined for #{name}"
+    end
+
+    undef :new
+
+    def sqrt(n)
+      n = ::Opal.coerce_to!(n, ::Integer, :to_int)
+      %x{
+        if (n < 0) {
+          #{::Kernel.raise ::Math::DomainError, 'Numerical argument is out of domain - "isqrt"'}
+        }
+
+        return parseInt(Math.sqrt(n), 10);
+      }
+    end
+
+    def try_convert(object)
+      Opal.coerce_to?(object, self, :to_int)
+    end
+  end
+
+  self::MAX = `Math.pow(2, 30) - 1`
+  self::MIN = `-Math.pow(2, 30)`
+end
+
+class ::Float < ::Numeric
+  `self.$$is_number_class = true`
+
+  class << self
+    def allocate
+      ::Kernel.raise ::TypeError, "allocator undefined for #{name}"
+    end
+
+    undef :new
+
+    def ===(other)
+      `!!other.$$is_number`
+    end
+  end
+
+  self::INFINITY = `Infinity`
+  self::MAX      = `Number.MAX_VALUE`
+  self::MIN      = `Number.MIN_VALUE`
+  self::NAN      = `NaN`
+
+  self::DIG      = 15
+  self::MANT_DIG = 53
+  self::RADIX    = 2
+
+  self::EPSILON = `Number.EPSILON || 2.2204460492503130808472633361816E-16`
+end
diff --git a/opal/corelib/numeric.rb b/opal/corelib/numeric.rb
new file mode 100644
index 00000000..b2c63cf9
--- /dev/null
+++ b/opal/corelib/numeric.rb
@@ -0,0 +1,347 @@
+require 'corelib/comparable'
+
+class ::Numeric
+  include ::Comparable
+
+  def coerce(other)
+    if other.instance_of? self.class
+      return [other, self]
+    end
+
+    [::Kernel.Float(other), ::Kernel.Float(self)]
+  end
+
+  def __coerced__(method, other)
+    if other.respond_to?(:coerce)
+      a, b = other.coerce(self)
+      a.__send__ method, b
+    else
+      case method
+      when :+, :-, :*, :/, :%, :&, :|, :^, :**
+        ::Kernel.raise ::TypeError, "#{other.class} can't be coerced into Numeric"
+      when :>, :>=, :<, :<=, :<=>
+        ::Kernel.raise ::ArgumentError, "comparison of #{self.class} with #{other.class} failed"
+      end
+    end
+  end
+
+  def <=>(other)
+    if equal? other
+      return 0
+    end
+
+    nil
+  end
+
+  def +@
+    self
+  end
+
+  def -@
+    0 - self
+  end
+
+  def %(other)
+    self - other * div(other)
+  end
+
+  def abs
+    self < 0 ? -self : self
+  end
+
+  def abs2
+    self * self
+  end
+
+  def angle
+    self < 0 ? ::Math::PI : 0
+  end
+
+  def ceil(ndigits = 0)
+    to_f.ceil(ndigits)
+  end
+
+  def conj
+    self
+  end
+
+  def denominator
+    to_r.denominator
+  end
+
+  def div(other)
+    ::Kernel.raise ::ZeroDivisionError, 'divided by o' if other == 0
+
+    (self / other).floor
+  end
+
+  def divmod(other)
+    [div(other), self % other]
+  end
+
+  def fdiv(other)
+    to_f / other
+  end
+
+  def floor(ndigits = 0)
+    to_f.floor(ndigits)
+  end
+
+  def i
+    ::Kernel.Complex(0, self)
+  end
+
+  def imag
+    0
+  end
+
+  def integer?
+    false
+  end
+
+  def nonzero?
+    zero? ? nil : self
+  end
+
+  def numerator
+    to_r.numerator
+  end
+
+  def polar
+    [abs, arg]
+  end
+
+  def quo(other)
+    ::Opal.coerce_to!(self, ::Rational, :to_r) / other
+  end
+
+  def real
+    self
+  end
+
+  def real?
+    true
+  end
+
+  def rect
+    [self, 0]
+  end
+
+  def round(digits = undefined)
+    to_f.round(digits)
+  end
+
+  def step(limit = undefined, step = undefined, to: undefined, by: undefined, &block)
+    %x{
+      if (limit !== undefined && to !== undefined) {
+        #{::Kernel.raise ::ArgumentError, 'to is given twice'}
+      }
+
+      if (step !== undefined && by !== undefined) {
+        #{::Kernel.raise ::ArgumentError, 'step is given twice'}
+      }
+
+      if (to !== undefined) {
+        limit = to;
+      }
+
+      if (by !== undefined) {
+        step = by;
+      }
+
+      if (limit === undefined) {
+        limit = nil;
+      }
+
+      function validateParameters() {
+        if (step === nil) {
+          #{::Kernel.raise ::TypeError, 'step must be numeric'}
+        }
+
+        if (step != null && #{step == 0}) {
+          #{::Kernel.raise ::ArgumentError, "step can't be 0"}
+        }
+
+        if (step === nil || step == null) {
+          step = 1;
+        }
+
+        var sign = #{step <=> 0};
+
+        if (sign === nil) {
+          #{::Kernel.raise ::ArgumentError, "0 can't be coerced into #{step.class}"}
+        }
+
+        if (limit === nil || limit == null) {
+          limit = sign > 0 ? #{::Float::INFINITY} : #{-::Float::INFINITY};
+        }
+
+        #{::Opal.compare(self, limit)}
+      }
+
+      function stepFloatSize() {
+        if ((step > 0 && self > limit) || (step < 0 && self < limit)) {
+          return 0;
+        } else if (step === Infinity || step === -Infinity) {
+          return 1;
+        } else {
+          var abs = Math.abs, floor = Math.floor,
+              err = (abs(self) + abs(limit) + abs(limit - self)) / abs(step) * #{::Float::EPSILON};
+
+          if (err === Infinity || err === -Infinity) {
+            return 0;
+          } else {
+            if (err > 0.5) {
+              err = 0.5;
+            }
+
+            return floor((limit - self) / step + err) + 1
+          }
+        }
+      }
+
+      function stepSize() {
+        validateParameters();
+
+        if (step === 0) {
+          return Infinity;
+        }
+
+        if (step % 1 !== 0) {
+          return stepFloatSize();
+        } else if ((step > 0 && self > limit) || (step < 0 && self < limit)) {
+          return 0;
+        } else {
+          var ceil = Math.ceil, abs = Math.abs,
+              lhs = abs(self - limit) + 1,
+              rhs = abs(step);
+
+          return ceil(lhs / rhs);
+        }
+      }
+
+    }
+
+    unless block_given?
+      if (!limit || limit.is_a?(::Numeric)) &&
+         (!step || step.is_a?(::Numeric))
+
+        return ::Enumerator::ArithmeticSequence.new(
+          [limit, step, ('to: ' if to), ('by: ' if by)], self
+        )
+      else
+        return enum_for(:step, limit, step, &`stepSize`)
+      end
+    end
+
+    %x{
+      validateParameters();
+
+      var isDesc = #{step.negative?},
+          isInf = #{step == 0} ||
+                  (limit === Infinity && !isDesc) ||
+                  (limit === -Infinity && isDesc);
+
+      if (self.$$is_number && step.$$is_number && limit.$$is_number) {
+        if (self % 1 === 0 && (isInf || limit % 1 === 0) && step % 1 === 0) {
+          var value = self;
+
+          if (isInf) {
+            for (;; value += step) {
+              block(value);
+            }
+          } else if (isDesc) {
+            for (; value >= limit; value += step) {
+              block(value);
+            }
+          } else {
+            for (; value <= limit; value += step) {
+              block(value);
+            }
+          }
+
+          return self;
+        } else {
+          var begin = #{to_f}.valueOf();
+          step = #{step.to_f}.valueOf();
+          limit = #{limit.to_f}.valueOf();
+
+          var n = stepFloatSize();
+
+          if (!isFinite(step)) {
+            if (n !== 0) block(begin);
+          } else if (step === 0) {
+            while (true) {
+              block(begin);
+            }
+          } else {
+            for (var i = 0; i < n; i++) {
+              var d = i * step + self;
+              if (step >= 0 ? limit < d : limit > d) {
+                d = limit;
+              }
+              block(d);
+            }
+          }
+
+          return self;
+        }
+      }
+    }
+
+    counter = self
+
+    while `isDesc ? #{counter >= limit} : #{counter <= limit}`
+      yield counter
+      counter += step
+    end
+  end
+
+  def to_c
+    ::Kernel.Complex(self, 0)
+  end
+
+  def to_int
+    to_i
+  end
+
+  def truncate(ndigits = 0)
+    to_f.truncate(ndigits)
+  end
+
+  def zero?
+    self == 0
+  end
+
+  def positive?
+    self > 0
+  end
+
+  def negative?
+    self < 0
+  end
+
+  def dup
+    self
+  end
+
+  def clone(freeze: true)
+    self
+  end
+
+  def finite?
+    true
+  end
+
+  def infinite?
+    nil
+  end
+
+  alias arg angle
+  alias conjugate conj
+  alias imaginary imag
+  alias magnitude abs
+  alias modulo %
+  alias phase arg
+  alias rectangular rect
+end
diff --git a/opal/corelib/object_space.rb b/opal/corelib/object_space.rb
new file mode 100644
index 00000000..f0d76282
--- /dev/null
+++ b/opal/corelib/object_space.rb
@@ -0,0 +1,103 @@
+# helpers: respond_to, truthy
+
+module ::ObjectSpace
+  module_function
+
+  %x{
+    var callers = {}, registry, add_caller, delete_callers;
+    if (typeof FinalizationRegistry === "function") {
+      registry = new FinalizationRegistry(function(id) {
+        if (typeof callers[id] !== "undefined") {
+          for (var i = 0; i < callers[id].length; i++) {
+            #{`callers[id][i]`.call(`id`)};
+          }
+          delete callers[id];
+        }
+      });
+      add_caller = function(id, value) {
+        callers[id] = callers[id] || [];
+        callers[id].push(value);
+      }
+      delete_callers = function(id) {
+        delete callers[id];
+      }
+    }
+    else {
+      // A weak polyfill for FinalizationRegistry
+      registry = {
+        register: function(){},
+        unregister: function(){}
+      };
+      add_caller = function(){};
+      delete_callers = function(){};
+    }
+  }
+
+  def define_finalizer(obj, aproc = undefined, &block)
+    %x{
+      if ($truthy(block)) aproc = block;
+      if (!$truthy(aproc)) aproc = #{::Kernel.proc};
+      if (!$respond_to(aproc, '$call')) {
+        #{::Kernel.raise ::ArgumentError, "Wrong type argument #{aproc.class} (should be callable)"};
+      }
+      var id = #{obj.__id__};
+      add_caller(id, aproc);
+      try {
+        registry.register(obj, id, obj);
+      }
+      catch (e) {
+        delete_callers(id);
+        #{::Kernel.raise ::ArgumentError, "cannot define finalizer for #{obj.class}"};
+      }
+      return [0, aproc];
+    }
+  end
+
+  def undefine_finalizer(obj)
+    %{
+      var id = #{obj.__id__};
+      registry.unregister(obj);
+      delete_callers(id);
+      return obj;
+    }
+  end
+
+  class self::WeakMap
+    include ::Enumerable
+
+    def initialize
+      @weak_map = `new WeakMap()`
+      @primitive_map = {}
+    end
+
+    def [](p1)
+      %x{
+        if (typeof p1 !== "function" && typeof p1 !== "object") return #{@primitive_map[p1]};
+        return #{@weak_map}.get(p1);
+      }
+    end
+
+    def []=(p1, p2)
+      %x{
+        if (typeof p1 !== "function" && typeof p1 !== "object") return #{@primitive_map[p1] = p2};
+        return #{@weak_map}.set(p1, p2);
+      }
+    end
+
+    def include?(p1)
+      %x{
+        if (typeof p1 !== "function" && typeof p1 !== "object") return #{@primitive_map.key? p1};
+        return #{@weak_map}.has(p1);
+      }
+    end
+
+    %i[each each_key each_value each_pair keys values size length].each do |i|
+      define_method i do |*|
+        ::Kernel.raise ::NotImplementedError, "##{i} can't be implemented on top of JS interfaces"
+      end
+    end
+
+    alias member? include?
+    alias key? include?
+  end
+end
diff --git a/opal/corelib/pack_unpack/format_string_parser.rb b/opal/corelib/pack_unpack/format_string_parser.rb
new file mode 100644
index 00000000..57d13325
--- /dev/null
+++ b/opal/corelib/pack_unpack/format_string_parser.rb
@@ -0,0 +1,135 @@
+module ::PackUnpack
+  %x{
+    var directives = [
+      // Integer
+      'C',
+      'S',
+      'L',
+      'Q',
+      'J',
+
+      'c',
+      's',
+      'l',
+      'q',
+      'j',
+
+      'n',
+      'N',
+      'v',
+      'V',
+
+      'U',
+      'w',
+
+      // Float
+      'D',
+      'd',
+      'F',
+      'f',
+      'E',
+      'e',
+      'G',
+      'g',
+
+      // String
+      'A',
+      'a',
+      'Z',
+      'B',
+      'b',
+      'H',
+      'h',
+      'u',
+      'M',
+      'm',
+
+      'P',
+      'p',
+
+      // Misc
+      '@',
+      'X',
+      'x'
+    ];
+
+    var modifiers = [
+      '!', // ignored
+      '_', // ignored
+      '>', // big endian
+      '<'  // little endian
+    ];
+
+    self.eachDirectiveAndCount = function(format, callback) {
+      var currentDirective,
+          currentCount,
+          currentModifiers,
+          countSpecified;
+
+      function reset() {
+        currentDirective = null;
+        currentCount = 0;
+        currentModifiers = [];
+        countSpecified = false;
+      }
+
+      reset();
+
+      function yieldAndReset() {
+        if (currentDirective == null) {
+          reset();
+          return;
+        }
+
+        var directiveSupportsModifiers = /[sSiIlLqQjJ]/.test(currentDirective);
+
+        if (!directiveSupportsModifiers && currentModifiers.length > 0) {
+          #{::Kernel.raise ::ArgumentError, "'#{`currentModifiers[0]`}' allowed only after types sSiIlLqQjJ"}
+        }
+
+        if (currentModifiers.indexOf('<') !== -1 && currentModifiers.indexOf('>') !== -1) {
+          #{::Kernel.raise ::RangeError, "Can't use both '<' and '>'"}
+        }
+
+        if (!countSpecified) {
+          currentCount = 1;
+        }
+
+        if (currentModifiers.indexOf('>') !== -1) {
+          currentDirective = currentDirective + '>';
+        }
+
+        callback(currentDirective, currentCount);
+
+        reset();
+      }
+
+      for (var i = 0; i < format.length; i++) {
+        var currentChar = format[i];
+
+        if (directives.indexOf(currentChar) !== -1) {
+          // Directive char always resets current state
+          yieldAndReset();
+          currentDirective = currentChar;
+        } else if (currentDirective) {
+          if (/\d/.test(currentChar)) {
+            // Count can be represented as a sequence of digits
+            currentCount = currentCount * 10 + parseInt(currentChar, 10);
+            countSpecified = true;
+          } else if (currentChar === '*' && countSpecified === false) {
+            // Count can be represented by a star character
+            currentCount = Infinity;
+            countSpecified = true;
+          } else if (modifiers.indexOf(currentChar) !== -1 && countSpecified === false) {
+            // Directives can be specified only after directive and before count
+            currentModifiers.push(currentChar);
+          } else {
+            yieldAndReset();
+          }
+        }
+      }
+
+      yieldAndReset();
+    }
+  }
+end
diff --git a/opal/corelib/pattern_matching.rb b/opal/corelib/pattern_matching.rb
new file mode 100644
index 00000000..dc5bda8e
--- /dev/null
+++ b/opal/corelib/pattern_matching.rb
@@ -0,0 +1,125 @@
+require 'corelib/pattern_matching/base'
+
+# A "userland" implementation of pattern matching for Opal
+
+class ::PatternMatching
+  def self.call(from, pattern)
+    pm = new(from, pattern)
+    pm.match || (return nil)
+    pm.returns
+  end
+
+  def initialize(from, pattern)
+    @from, @pattern = from, pattern
+    @returns = []
+  end
+
+  attr_reader :returns
+
+  def match(from = @from, pattern = @pattern)
+    if pattern == :var
+      @returns << from
+      true
+    else # Pattern is otherwise an Array
+      type, *args = *pattern
+
+      case type
+      when :save # from =>
+        @returns << from
+        match(from, args[0])
+      when :lit # 3, 4, :a, (1..), ... (but also ^a)
+        args[0] === from
+      when :any # a | b
+        args.any? { |arg| match(from, arg) }
+      when :all # Array(1) which works as Array & [1] (& doesn't exist though...)
+        args.all? { |arg| match(from, arg) }
+      when :array # [...]
+        fixed_size, array_size, array_match = *args
+        return false unless from.respond_to? :deconstruct
+        a = from.deconstruct
+        return false if fixed_size && a.length != array_size
+        return false if a.length < array_size
+
+        skip_elems = 0
+        skip_rests = 0
+
+        array_match.each_with_index.all? do |elem, i|
+          type, *args = elem
+          case type
+          when :rest
+            skip_elems = a.size - array_size
+            skip_rests = 1
+            match(a[i...i + skip_elems], args[0]) if args[0] # :save?
+            true
+          else
+            match(a[i + skip_elems - skip_rests], elem)
+          end
+        end
+      when :find # [*, a, b, *]
+        find_match, = *args
+        first, *find_match, last = *find_match
+        pattern_length = find_match.length
+
+        return false unless from.respond_to? :deconstruct
+        a = from.deconstruct
+        a_length = a.length
+        return false if a_length < pattern_length
+
+        # We will save the backup of returns, to be restored
+        # on each iteration to try again.
+        returns_backup = @returns.dup
+
+        # Extract the capture info from first and last.
+        # Both are of a form [:rest], or [:rest, :var].
+        # So our new variables will be either :var, or nil.
+        first, last = first[1], last[1]
+
+        # Let's try to match each possibility...
+        # [A, B, c, d], [a, B, C, d], [a, b, C, D]
+        iterations = a_length - pattern_length + 1
+
+        iterations.times.any? do |skip|
+          first_part = a[0, skip]
+          content = a[skip, pattern_length]
+          last_part = a[skip + pattern_length..-1]
+
+          match(first_part, first) if first
+          success = content.each_with_index.all? do |e, i|
+            match(e, find_match[i])
+          end
+          match(last_part, last) if last
+
+          # Match failed. Let's not return anything.
+          @returns = returns_backup.dup unless success
+
+          success
+        end
+      when :hash # {...}
+        any_size, hash_match = *args
+
+        hash_match = hash_match.to_h
+
+        return false unless from.respond_to? :deconstruct_keys
+
+        if any_size && any_size != true # a => {a:, **other}
+          a = from.deconstruct_keys(nil) #          ^^^^^^^
+        else
+          a = from.deconstruct_keys(hash_match.keys)
+        end
+
+        hash_match.all? do |k, v|
+          return false unless a.key? k
+          match(a[k], v)
+        end || (return false)
+
+        if any_size && any_size != true
+          match(a.except(*hash_match.keys), args[0])
+        elsif !any_size
+          return false unless a.except(*hash_match.keys).empty?
+        end
+
+        true
+      end
+    end
+  end
+end
diff --git a/opal/corelib/pattern_matching/base.rb b/opal/corelib/pattern_matching/base.rb
new file mode 100644
index 00000000..a56c58ed
--- /dev/null
+++ b/opal/corelib/pattern_matching/base.rb
@@ -0,0 +1,35 @@
+class ::Array
+  def deconstruct
+    self
+  end
+end
+
+class ::Hash
+  def deconstruct_keys(_)
+    self
+  end
+end
+
+class ::Struct
+  alias deconstruct to_a
+  # This function is specified in a very weird way...
+  def deconstruct_keys(keys)
+    return to_h if keys.nil?
+    ::Kernel.raise ::TypeError, 'expected Array or nil' unless ::Array === keys
+    return {} if keys.length > values.length
+    out = {}
+    keys.each do |key|
+      should_break = case key
+                     when ::Integer
+                       values.length < key
+                     when ::Symbol # Or String? Doesn't matter, we're in Opal.
+                       !members.include?(key)
+                     end
+      break if should_break
+      out[key] = self[key]
+    end
+    out
+  end
+end
+
+class ::NoMatchingPatternError < ::StandardError; end
diff --git a/opal/corelib/proc.rb b/opal/corelib/proc.rb
new file mode 100644
index 00000000..46aaf2e4
--- /dev/null
+++ b/opal/corelib/proc.rb
@@ -0,0 +1,191 @@
+# helpers: slice
+
+class ::Proc < `Function`
+  `Opal.prop(self.$$prototype, '$$is_proc', true)`
+  `Opal.prop(self.$$prototype, '$$is_lambda', false)`
+
+  def self.new(&block)
+    unless block
+      ::Kernel.raise ::ArgumentError, 'tried to create a Proc object without a block'
+    end
+
+    block
+  end
+
+  def call(*args, &block)
+    %x{
+      if (block !== nil) {
+        self.$$p = block;
+      }
+
+      var result, $brk = self.$$brk;
+
+      if ($brk) {
+        try {
+          if (self.$$is_lambda) {
+            result = self.apply(null, args);
+          }
+          else {
+            result = Opal.yieldX(self, args);
+          }
+        } catch (err) {
+          if (err === $brk) {
+            return $brk.$v
+          }
+          else {
+            throw err
+          }
+        }
+      }
+      else {
+        if (self.$$is_lambda) {
+          result = self.apply(null, args);
+        }
+        else {
+          result = Opal.yieldX(self, args);
+        }
+      }
+
+      return result;
+    }
+  end
+
+  def >>(other)
+    ::Kernel.proc do |*args, &block|
+      out = call(*args, &block)
+      other.call(out)
+    end
+  end
+
+  def <<(other)
+    ::Kernel.proc do |*args, &block|
+      out = other.call(*args, &block)
+      call(out)
+    end
+  end
+
+  def to_proc
+    self
+  end
+
+  def lambda?
+    # This method should tell the user if the proc tricks are unavailable,
+    # (see Proc#lambda? on ruby docs to find out more).
+    `!!self.$$is_lambda`
+  end
+
+  def arity
+    %x{
+      if (self.$$is_curried) {
+        return -1;
+      } else {
+        return self.$$arity;
+      }
+    }
+  end
+
+  def source_location
+    `if (self.$$is_curried) { return nil; }`
+    nil
+  end
+
+  def binding
+    `if (self.$$is_curried) { #{::Kernel.raise ::ArgumentError, "Can't create Binding"} }`
+
+    if defined? ::Binding
+      ::Binding.new(nil, [], `self.$$s`, source_location)
+    end
+  end
+
+  def parameters
+    %x{
+      if (self.$$is_curried) {
+        return #{[[:rest]]};
+      } else if (self.$$parameters) {
+        if (self.$$is_lambda) {
+          return self.$$parameters;
+        } else {
+          var result = [], i, length;
+
+          for (i = 0, length = self.$$parameters.length; i < length; i++) {
+            var parameter = self.$$parameters[i];
+
+            if (parameter[0] === 'req') {
+              // required arguments always have name
+              parameter = ['opt', parameter[1]];
+            }
+
+            result.push(parameter);
+          }
+
+          return result;
+        }
+      } else {
+        return [];
+      }
+    }
+  end
+
+  def curry(arity = undefined)
+    %x{
+      if (arity === undefined) {
+        arity = self.length;
+      }
+      else {
+        arity = #{::Opal.coerce_to!(arity, ::Integer, :to_int)};
+        if (self.$$is_lambda && arity !== self.length) {
+          #{::Kernel.raise ::ArgumentError, "wrong number of arguments (#{`arity`} for #{`self.length`})"}
+        }
+      }
+
+      function curried () {
+        var args = $slice.call(arguments),
+            length = args.length,
+            result;
+
+        if (length > arity && self.$$is_lambda && !self.$$is_curried) {
+          #{::Kernel.raise ::ArgumentError, "wrong number of arguments (#{`length`} for #{`arity`})"}
+        }
+
+        if (length >= arity) {
+          return self.$call.apply(self, args);
+        }
+
+        result = function () {
+          return curried.apply(null,
+            args.concat($slice.call(arguments)));
+        }
+        result.$$is_lambda = self.$$is_lambda;
+        result.$$is_curried = true;
+
+        return result;
+      };
+
+      curried.$$is_lambda = self.$$is_lambda;
+      curried.$$is_curried = true;
+      return curried;
+    }
+  end
+
+  def dup
+    %x{
+      var original_proc = self.$$original_proc || self,
+          proc = function () {
+            return original_proc.apply(this, arguments);
+          };
+
+      for (var prop in self) {
+        if (self.hasOwnProperty(prop)) {
+          proc[prop] = self[prop];
+        }
+      }
+
+      return proc;
+    }
+  end
+
+  alias === call
+  alias clone dup
+  alias yield call
+  alias [] call
+end
diff --git a/opal/corelib/process.rb b/opal/corelib/process.rb
new file mode 100644
index 00000000..8071d934
--- /dev/null
+++ b/opal/corelib/process.rb
@@ -0,0 +1,57 @@
+module ::Process
+  @__clocks__ = []
+  def self.__register_clock__(name, func)
+    const_set name, @__clocks__.size
+    @__clocks__ << func
+  end
+
+  __register_clock__ :CLOCK_REALTIME, `function() { return Date.now() }`
+
+  monotonic = false
+
+  %x{
+    if (Opal.global.performance) {
+      monotonic = function() {
+        return performance.now()
+      };
+    }
+    else if (Opal.global.process && process.hrtime) {
+      // let now be the base to get smaller numbers
+      var hrtime_base = process.hrtime();
+
+      monotonic = function() {
+        var hrtime = process.hrtime(hrtime_base);
+        var us = (hrtime[1] / 1000) | 0; // cut below microsecs;
+        return ((hrtime[0] * 1000) + (us / 1000));
+      };
+    }
+  }
+
+  __register_clock__(:CLOCK_MONOTONIC, monotonic) if monotonic
+
+  def self.pid
+    0
+  end
+
+  def self.times
+    t = ::Time.now.to_f
+    ::Benchmark::Tms.new(t, t, t, t, t)
+  end
+
+  def self.clock_gettime(clock_id, unit = :float_second)
+    (clock = @__clocks__[clock_id]) || ::Kernel.raise(::Errno::EINVAL, "clock_gettime(#{clock_id}) #{@__clocks__[clock_id]}")
+    %x{
+      var ms = clock();
+      switch (unit) {
+        case 'float_second':      return  (ms / 1000);         // number of seconds as a float (default)
+        case 'float_millisecond': return  (ms / 1);            // number of milliseconds as a float
+        case 'float_microsecond': return  (ms * 1000);         // number of microseconds as a float
+        case 'second':            return ((ms / 1000)    | 0); // number of seconds as an integer
+        case 'millisecond':       return ((ms / 1)       | 0); // number of milliseconds as an integer
+        case 'microsecond':       return ((ms * 1000)    | 0); // number of microseconds as an integer
+        case 'nanosecond':        return ((ms * 1000000) | 0); // number of nanoseconds as an integer
+        default: #{::Kernel.raise ::ArgumentError, "unexpected unit: #{unit}"}
+      }
+    }
+  end
+end
diff --git a/opal/corelib/process/base.rb b/opal/corelib/process/base.rb
new file mode 100644
index 00000000..22f1d278
--- /dev/null
+++ b/opal/corelib/process/base.rb
@@ -0,0 +1,9 @@
+class ::Signal
+  def self.trap(*)
+  end
+end
+
+class ::GC
+  def self.start
+  end
+end
diff --git a/opal/corelib/process/status.rb b/opal/corelib/process/status.rb
new file mode 100644
index 00000000..489252db
--- /dev/null
+++ b/opal/corelib/process/status.rb
@@ -0,0 +1,21 @@
+module ::Process
+  class Status
+    def initialize(status, pid)
+      @status, @pid = status, pid
+    end
+
+    def exitstatus
+      @status
+    end
+
+    attr_reader :pid
+
+    def success?
+      @status == 0
+    end
+
+    def inspect
+      "#<Process::Status: pid #{@pid} exit #{@status}>"
+    end
+  end
+end
diff --git a/opal/corelib/random.rb b/opal/corelib/random.rb
new file mode 100644
index 00000000..a90957c5
--- /dev/null
+++ b/opal/corelib/random.rb
@@ -0,0 +1,94 @@
+# helpers: truthy
+
+require 'corelib/random/formatter'
+
+class ::Random
+  attr_reader :seed, :state
+
+  def self._verify_count(count)
+    %x{
+      if (!$truthy(count)) count = 16;
+      if (typeof count !== "number") count = #{`count`.to_int};
+      if (count < 0) #{::Kernel.raise ::ArgumentError, 'negative string size (or size too big)'};
+      count = Math.floor(count);
+      return count;
+    }
+  end
+
+  def initialize(seed = ::Random.new_seed)
+    seed = ::Opal.coerce_to!(seed, ::Integer, :to_int)
+    @state = seed
+    reseed(seed)
+  end
+
+  def reseed(seed)
+    @seed = seed
+    `self.$rng = Opal.$$rand.reseed(seed)`
+  end
+
+  def self.new_seed
+    `Opal.$$rand.new_seed()`
+  end
+
+  def self.rand(limit = undefined)
+    self::DEFAULT.rand(limit)
+  end
+
+  def self.srand(n = ::Random.new_seed)
+    n = ::Opal.coerce_to!(n, ::Integer, :to_int)
+
+    previous_seed = self::DEFAULT.seed
+    self::DEFAULT.reseed(n)
+    previous_seed
+  end
+
+  def self.urandom(size)
+    ::SecureRandom.bytes(size)
+  end
+
+  def ==(other)
+    return false unless ::Random === other
+
+    seed == other.seed && state == other.state
+  end
+
+  def bytes(length)
+    length = ::Random._verify_count(length)
+
+    ::Array.new(length) { rand(255).chr }.join.encode('ASCII-8BIT')
+  end
+
+  def self.bytes(length)
+    self::DEFAULT.bytes(length)
+  end
+
+  def rand(limit = undefined)
+    random_number(limit)
+  end
+
+  # Not part of the Ruby interface (use #random_number for portability), but
+  # used by Random::Formatter as a shortcut, as for Random interface the float
+  # RNG is primary.
+  def random_float
+    %x{
+      self.state++;
+      return Opal.$$rand.rand(self.$rng);
+    }
+  end
+
+  def self.random_float
+    self::DEFAULT.random_float
+  end
+
+  def self.generator=(generator)
+    `Opal.$$rand = #{generator}`
+
+    if const_defined? :DEFAULT
+      self::DEFAULT.reseed
+    else
+      const_set :DEFAULT, new(new_seed)
+    end
+  end
+end
+
+require 'corelib/random/mersenne_twister'
diff --git a/opal/corelib/random/formatter.rb b/opal/corelib/random/formatter.rb
new file mode 100644
index 00000000..690b5097
--- /dev/null
+++ b/opal/corelib/random/formatter.rb
@@ -0,0 +1,122 @@
+class ::Random
+  module self::Formatter
+    def hex(count = nil)
+      count = ::Random._verify_count(count)
+      %x{
+        var bytes = #{bytes(count)};
+        var out = "";
+        for (var i = 0; i < #{count}; i++) {
+          out += bytes.charCodeAt(i).toString(16).padStart(2, '0');
+        }
+        return #{`out`.encode('US-ASCII')};
+      }
+    end
+
+    def random_bytes(count = nil)
+      bytes(count)
+    end
+
+    def base64(count = nil)
+      ::Base64.strict_encode64(random_bytes(count)).encode('US-ASCII')
+    end
+
+    def urlsafe_base64(count = nil, padding = false)
+      ::Base64.urlsafe_encode64(random_bytes(count), padding).encode('US-ASCII')
+    end
+
+    def uuid
+      str = hex(16).split('')
+      str[12] = '4'
+      str[16] = `(parseInt(#{str[16]}, 16) & 3 | 8).toString(16)`
+      str = [str[0...8], str[8...12], str[12...16], str[16...20], str[20...32]]
+      str = str.map(&:join)
+      str.join('-')
+    end
+
+    # Implemented in terms of `#bytes` for SecureRandom, but Random overrides this
+    # method to implement `#bytes` in terms of `#random_float`. Not part of standard
+    # Ruby interface - use random_number for portability.
+    def random_float
+      bs = bytes(4)
+      num = 0
+      4.times do |i|
+        num <<= 8
+        num |= bs[i].ord
+      end
+      num.abs / 0x7fffffff
+    end
+
+    def random_number(limit = undefined)
+      %x{
+        function randomFloat() {
+          return #{random_float};
+        }
+
+        function randomInt(max) {
+          return Math.floor(randomFloat() * max);
+        }
+
+        function randomRange() {
+          var min = limit.begin,
+              max = limit.end;
+
+          if (min === nil || max === nil) {
+            return nil;
+          }
+
+          var length = max - min;
+
+          if (length < 0) {
+            return nil;
+          }
+
+          if (length === 0) {
+            return min;
+          }
+
+          if (max % 1 === 0 && min % 1 === 0 && !limit.excl) {
+            length++;
+          }
+
+          return randomInt(length) + min;
+        }
+
+        if (limit == null) {
+          return randomFloat();
+        } else if (limit.$$is_range) {
+          return randomRange();
+        } else if (limit.$$is_number) {
+          if (limit <= 0) {
+            #{::Kernel.raise ::ArgumentError, "invalid argument - #{limit}"}
+          }
+
+          if (limit % 1 === 0) {
+            // integer
+            return randomInt(limit);
+          } else {
+            return randomFloat() * limit;
+          }
+        } else {
+          limit = #{::Opal.coerce_to!(limit, ::Integer, :to_int)};
+
+          if (limit <= 0) {
+            #{::Kernel.raise ::ArgumentError, "invalid argument - #{limit}"}
+          }
+
+          return randomInt(limit);
+        }
+      }
+    end
+
+    def alphanumeric(count = nil)
+      count = Random._verify_count(count)
+      map = ['0'..'9', 'a'..'z', 'A'..'Z'].map(&:to_a).flatten
+      ::Array.new(count) do |i|
+        map[random_number(map.length)]
+      end.join
+    end
+  end
+
+  include ::Random::Formatter
+  extend ::Random::Formatter
+end
diff --git a/opal/corelib/random/math_random.js.rb b/opal/corelib/random/math_random.js.rb
new file mode 100644
index 00000000..db19c53b
--- /dev/null
+++ b/opal/corelib/random/math_random.js.rb
@@ -0,0 +1,9 @@
+class ::Random
+  MATH_RANDOM_GENERATOR = `{
+    new_seed: function() { return 0; },
+    reseed: function(seed) { return {}; },
+    rand: function($rng) { return Math.random(); }
+  }`
+
+  self.generator = MATH_RANDOM_GENERATOR
+end
diff --git a/opal/corelib/random/mersenne_twister.rb b/opal/corelib/random/mersenne_twister.rb
new file mode 100644
index 00000000..fedbe888
--- /dev/null
+++ b/opal/corelib/random/mersenne_twister.rb
@@ -0,0 +1,147 @@
+# This is based on an adaptation of Makoto Matsumoto and Takuji Nishimura's code
+# done by Sean McCullough <banksean@gmail.com> and Dave Heitzman
+# <daveheitzman@yahoo.com>, subsequently readapted from an updated version of
+# ruby's random.c (rev c38a183032a7826df1adabd8aa0725c713d53e1c).
+#
+# The original copyright notice from random.c follows.
+#
+#   This is based on trimmed version of MT19937.  To get the original version,
+#   contact <http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/emt.html>.
+#
+#   The original copyright notice follows.
+#
+#      A C-program for MT19937, with initialization improved 2002/2/10.
+#      Coded by Takuji Nishimura and Makoto Matsumoto.
+#      This is a faster version by taking Shawn Cokus's optimization,
+#      Matthe Bellew's simplification, Isaku Wada's real version.
+#
+#      Before using, initialize the state by using init_genrand(mt, seed)
+#      or init_by_array(mt, init_key, key_length).
+#
+#      Copyright (C) 1997 - 2002, Makoto Matsumoto and Takuji Nishimura,
+#      All rights reserved.
+#
+#      Redistribution and use in source and binary forms, with or without
+#      modification, are permitted provided that the following conditions
+#      are met:
+#
+#        1. Redistributions of source code must retain the above copyright
+#           notice, this list of conditions and the following disclaimer.
+#
+#        2. Redistributions in binary form must reproduce the above copyright
+#           notice, this list of conditions and the following disclaimer in the
+#           documentation and/or other materials provided with the distribution.
+#
+#        3. The names of its contributors may not be used to endorse or promote
+#           products derived from this software without specific prior written
+#           permission.
+#
+#      THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+#      "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+#      LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+#      A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+#      CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+#      EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+#      PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+#      PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+#      LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+#      NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+#      SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+#
+#      Any feedback is very welcome.
+#      http://www.math.keio.ac.jp/matumoto/emt.html
+#      email: matumoto@math.keio.ac.jp
+mersenne_twister = %x{(function() {
+  /* Period parameters */
+  var N = 624;
+  var M = 397;
+  var MATRIX_A = 0x9908b0df;      /* constant vector a */
+  var UMASK = 0x80000000;         /* most significant w-r bits */
+  var LMASK = 0x7fffffff;         /* least significant r bits */
+  var MIXBITS = function(u,v) { return ( ((u) & UMASK) | ((v) & LMASK) ); };
+  var TWIST = function(u,v) { return (MIXBITS((u),(v)) >>> 1) ^ ((v & 0x1) ? MATRIX_A : 0x0); };
+
+  function init(s) {
+    var mt = {left: 0, next: N, state: new Array(N)};
+    init_genrand(mt, s);
+    return mt;
+  }
+
+  /* initializes mt[N] with a seed */
+  function init_genrand(mt, s) {
+    var j, i;
+    mt.state[0] = s >>> 0;
+    for (j=1; j<N; j++) {
+      mt.state[j] = (1812433253 * ((mt.state[j-1] ^ (mt.state[j-1] >> 30) >>> 0)) + j);
+      /* See Knuth TAOCP Vol2. 3rd Ed. P.106 for multiplier. */
+      /* In the previous versions, MSBs of the seed affect   */
+      /* only MSBs of the array state[].                     */
+      /* 2002/01/09 modified by Makoto Matsumoto             */
+      mt.state[j] &= 0xffffffff;  /* for >32 bit machines */
+    }
+    mt.left = 1;
+    mt.next = N;
+  }
+
+  /* generate N words at one time */
+  function next_state(mt) {
+    var p = 0, _p = mt.state;
+    var j;
+
+    mt.left = N;
+    mt.next = 0;
+
+    for (j=N-M+1; --j; p++)
+      _p[p] = _p[p+(M)] ^ TWIST(_p[p+(0)], _p[p+(1)]);
+
+    for (j=M; --j; p++)
+      _p[p] = _p[p+(M-N)] ^ TWIST(_p[p+(0)], _p[p+(1)]);
+
+    _p[p] = _p[p+(M-N)] ^ TWIST(_p[p+(0)], _p[0]);
+  }
+
+  /* generates a random number on [0,0xffffffff]-interval */
+  function genrand_int32(mt) {
+    /* mt must be initialized */
+    var y;
+
+    if (--mt.left <= 0) next_state(mt);
+    y = mt.state[mt.next++];
+
+    /* Tempering */
+    y ^= (y >>> 11);
+    y ^= (y << 7) & 0x9d2c5680;
+    y ^= (y << 15) & 0xefc60000;
+    y ^= (y >>> 18);
+
+    return y >>> 0;
+  }
+
+  function int_pair_to_real_exclusive(a, b) {
+    a >>>= 5;
+    b >>>= 6;
+    return(a*67108864.0+b)*(1.0/9007199254740992.0);
+  }
+
+  // generates a random number on [0,1) with 53-bit resolution
+  function genrand_real(mt) {
+    /* mt must be initialized */
+    var a = genrand_int32(mt), b = genrand_int32(mt);
+    return int_pair_to_real_exclusive(a, b);
+  }
+
+  return { genrand_real: genrand_real, init: init };
+})()}
+
+class ::Random
+  `var MAX_INT = Number.MAX_SAFE_INTEGER || Math.pow(2, 53) - 1`
+
+  self::MERSENNE_TWISTER_GENERATOR = `{
+    new_seed: function() { return Math.round(Math.random() * MAX_INT); },
+    reseed: function(seed) { return mersenne_twister.init(seed); },
+    rand: function(mt) { return mersenne_twister.genrand_real(mt); }
+  }`
+
+  self.generator = self::MERSENNE_TWISTER_GENERATOR
+end
diff --git a/opal/corelib/random/seedrandom.js.rb b/opal/corelib/random/seedrandom.js.rb
new file mode 100644
index 00000000..1be2ad89
--- /dev/null
+++ b/opal/corelib/random/seedrandom.js.rb
@@ -0,0 +1,27 @@
+class ::Random
+  %x{
+    var module = { exports: {} };
+
+    /* eslint-disable */
+    /*
+    seedrandom.min.js 2.4.1 (original source: https://github.com/davidbau/seedrandom/blob/2.4.1/seedrandom.min.js)
+    How to update:
+     . Chekout the latest release from GitHub: https://github.com/davidbau/seedrandom
+     . Apply the following commits:
+     .. Check for hasOwnProperty in flatten(): https://github.com/iliabylich/seedrandom/commit/06a94f59ae3d3956c8b1a2488334cafab6744b04
+     .. Add a module id for the RequireJS `define` method: https://github.com/Mogztter/seedrandom/commit/e047540c3d81f955cab9a01d17b8141d439fbd7d
+    */
+    !function(a,b){function c(c,j,k){var n=[];j=1==j?{entropy:!0}:j||{};var s=g(f(j.entropy?[c,i(a)]:null==c?h():c,3),n),t=new d(n),u=function(){for(var a=t.g(m),b=p,c=0;a<q;)a=(a+c)*l,b*=l,c=t.g(1);for(;a>=r;)a/=2,b/=2,c>>>=1;return(a+c)/b};return u.int32=function(){return 0|t.g(4)},u.quick=function(){return t.g(4)/4294967296},u.double=u,g(i(t.S),a),(j.pass||k||function(a,c,d,f){return f&&(f.S&&e(f,t),a.state=function(){return e(t,{})}),d?(b[o]=a,c):a})(u,s,"global"in j?j.global:this==b,j.state)}function d(a){var b,c=a.length,d=this,e=0,f=d.i=d.j=0,g=d.S=[];for(c||(a=[c++]);e<l;)g[e]=e++;for(e=0;e<l;e++)g[e]=g[f=s&f+a[e%c]+(b=g[e])],g[f]=b;(d.g=function(a){for(var b,c=0,e=d.i,f=d.j,g=d.S;a--;)b=g[e=s&e+1],c=c*l+g[s&(g[e]=g[f=s&f+b])+(g[f]=b)];return d.i=e,d.j=f,c})(l)}function e(a,b){return b.i=a.i,b.j=a.j,b.S=a.S.slice(),b}function f(a,b){var c,d=[],e=typeof a;if(b&&"object"==e)for(c in a)if(a.hasOwnProperty(c))try{d.push(f(a[c],b-1))}catch(a){}return d.length?d:"string"==e?a:a+"\0"}function g(a,b){for(var c,d=a+"",e=0;e<d.length;)b[s&e]=s&(c^=19*b[s&e])+d.charCodeAt(e++);return i(b)}function h(){try{if(j)return i(j.randomBytes(l));var b=new Uint8Array(l);return(k.crypto||k.msCrypto).getRandomValues(b),i(b)}catch(b){var c=k.navigator,d=c&&c.plugins;return[+new Date,k,d,k.screen,i(a)]}}function i(a){return String.fromCharCode.apply(0,a)}var j,k=this,l=256,m=6,n=52,o="random",p=b.pow(l,m),q=b.pow(2,n),r=2*q,s=l-1;if(b["seed"+o]=c,g(b.random(),a),"object"==typeof module&&module.exports){module.exports=c;try{j=require("crypto")}catch(a){}}else"function"==typeof define&&define.amd&&define('seekrandom',function(){return c})}([],Math);
+    /* eslint-enable */
+    var seedrandom = module.exports
+    var $seed_generator = new Math.seedrandom('opal', { entropy: true })
+  }
+
+  self::SEEDRANDOM_GENERATOR = `{
+    new_seed: function() { return Math.abs($seed_generator.int32()); },
+    reseed: function(seed) { return new seedrandom(seed); },
+    rand: function($rng) { return $rng.quick(); }
+  }`
+
+  self.generator = self::SEEDRANDOM_GENERATOR
+end
diff --git a/opal/corelib/range.rb b/opal/corelib/range.rb
new file mode 100644
index 00000000..39f8dd56
--- /dev/null
+++ b/opal/corelib/range.rb
@@ -0,0 +1,302 @@
+require 'corelib/enumerable'
+
+class ::Range
+  include ::Enumerable
+
+  `self.$$prototype.$$is_range = true`
+
+  attr_reader :begin, :end
+
+  def initialize(first, last, exclude = false)
+    ::Kernel.raise ::NameError, "'initialize' called twice" if @begin
+    ::Kernel.raise ::ArgumentError, 'bad value for range' unless first <=> last || first.nil? || last.nil?
+
+    @begin = first
+    @end   = last
+    @excl  = exclude
+  end
+
+  def ===(value)
+    include? value
+  end
+
+  %x{
+    function is_infinite(self) {
+      if (self.begin === nil || self.end === nil ||
+          self.begin === -Infinity || self.end === Infinity ||
+          self.begin === Infinity || self.end === -Infinity) return true;
+      return false;
+    }
+  }
+
+  def count(&block)
+    if !block_given? && `is_infinite(self)`
+      return ::Float::INFINITY
+    end
+    super
+  end
+
+  def to_a
+    ::Kernel.raise ::TypeError, 'cannot convert endless range to an array' if `is_infinite(self)`
+    super
+  end
+
+  def cover?(value)
+    beg_cmp = (@begin.nil? && -1) || (@begin <=> value) || false
+    end_cmp = (@end.nil? && -1) || (value <=> @end) || false
+    if @excl
+      end_cmp && end_cmp < 0
+    else
+      end_cmp && end_cmp <= 0
+    end && beg_cmp && beg_cmp <= 0
+  end
+
+  def each(&block)
+    return enum_for(:each) { size } unless block_given?
+
+    %x{
+      var i, limit;
+
+      if (#{@begin}.$$is_number && #{@end}.$$is_number) {
+        if (#{@begin} % 1 !== 0 || #{@end} % 1 !== 0) {
+          #{::Kernel.raise ::TypeError, "can't iterate from Float"}
+        }
+
+        for (i = #{@begin}, limit = #{@end} + #{@excl ? 0 : 1}; i < limit; i++) {
+          block(i);
+        }
+
+        return self;
+      }
+
+      if (#{@begin}.$$is_string && #{@end}.$$is_string) {
+        #{@begin.upto(@end, @excl, &block)}
+        return self;
+      }
+    }
+
+    current = @begin
+    last    = @end
+
+    unless current.respond_to?(:succ)
+      ::Kernel.raise ::TypeError, "can't iterate from #{current.class}"
+    end
+
+    while @end.nil? || (current <=> last) < 0
+      yield current
+
+      current = current.succ
+    end
+
+    yield current if !@excl && current == last
+
+    self
+  end
+
+  def eql?(other)
+    return false unless ::Range === other
+
+    @excl === other.exclude_end? &&
+      @begin.eql?(other.begin) &&
+      @end.eql?(other.end)
+  end
+
+  def exclude_end?
+    @excl
+  end
+
+  def first(n = undefined)
+    ::Kernel.raise ::RangeError, 'cannot get the minimum of beginless range' if @begin.nil?
+    return @begin if `n == null`
+    super
+  end
+
+  def last(n = undefined)
+    ::Kernel.raise ::RangeError, 'cannot get the maximum of endless range' if @end.nil?
+    return @end if `n == null`
+    to_a.last(n)
+  end
+
+  # FIXME: currently hardcoded to assume range holds numerics
+  def max
+    if @end.nil?
+      ::Kernel.raise ::RangeError, 'cannot get the maximum of endless range'
+    elsif block_given?
+      super
+    elsif !@begin.nil? && (@begin > @end ||
+                           @excl && @begin == @end)
+      nil
+    else
+      `#{@excl} ? #{@end} - 1 : #{@end}`
+    end
+  end
+
+  def min
+    if @begin.nil?
+      ::Kernel.raise ::RangeError, 'cannot get the minimum of beginless range'
+    elsif block_given?
+      super
+    elsif !@end.nil? && (@begin > @end ||
+                         @excl && @begin == @end)
+      nil
+    else
+      @begin
+    end
+  end
+
+  def size
+    infinity = ::Float::INFINITY
+
+    return 0 if (@begin == infinity && !@end.nil?) || (@end == -infinity && !@begin.nil?)
+    return infinity if `is_infinite(self)`
+    return nil unless ::Numeric === @begin && ::Numeric === @end
+
+    range_begin = @begin
+    range_end   = @end
+    range_end  -= 1 if @excl
+
+    return 0 if range_end < range_begin
+
+    `Math.abs(range_end - range_begin) + 1`.to_i
+  end
+
+  def step(n = undefined)
+    %x{
+      function coerceStepSize() {
+        if (n == null) {
+          n = 1;
+        }
+        else if (!n.$$is_number) {
+          n = #{::Opal.coerce_to!(n, ::Integer, :to_int)}
+        }
+
+        if (n < 0) {
+          #{::Kernel.raise ::ArgumentError, "step can't be negative"}
+        } else if (n === 0) {
+          #{::Kernel.raise ::ArgumentError, "step can't be 0"}
+        }
+      }
+
+      function enumeratorSize() {
+        if (!#{@begin.respond_to?(:succ)}) {
+          return nil;
+        }
+
+        if (#{@begin}.$$is_string && #{@end}.$$is_string) {
+          return nil;
+        }
+
+        if (n % 1 === 0) {
+          return #{(size / n).ceil};
+        } else {
+          // n is a float
+          var begin = self.begin, end = self.end,
+              abs = Math.abs, floor = Math.floor,
+              err = (abs(begin) + abs(end) + abs(end - begin)) / abs(n) * #{::Float::EPSILON},
+              size;
+
+          if (err > 0.5) {
+            err = 0.5;
+          }
+
+          if (self.excl) {
+            size = floor((end - begin) / n - err);
+            if (size * n + begin < end) {
+              size++;
+            }
+          } else {
+            size = floor((end - begin) / n + err) + 1
+          }
+
+          return size;
+        }
+      }
+    }
+
+    unless block_given?
+      if (@begin.is_a?(Numeric) || @begin.nil?) &&
+         (@end.is_a?(Numeric) || @end.nil?) &&
+         !(@begin.nil? && @end.nil?)
+
+        return ::Enumerator::ArithmeticSequence.new(self, n, :step)
+      else
+        return enum_for(:step, n) do
+          %x{
+            coerceStepSize();
+            return enumeratorSize();
+          }
+        end
+      end
+    end
+
+    `coerceStepSize()`
+
+    if `self.begin.$$is_number && self.end.$$is_number`
+      i = 0
+      loop do
+        current = @begin + i * n
+        if @excl
+          break if current >= @end
+        elsif current > @end
+          break
+        end
+        yield(current)
+        i += 1
+      end
+    else
+      %x{
+        if (#{@begin}.$$is_string && #{@end}.$$is_string && n % 1 !== 0) {
+          #{::Kernel.raise ::TypeError, 'no implicit conversion to float from string'}
+        }
+      }
+      each_with_index do |value, idx|
+        yield(value) if idx % n == 0
+      end
+    end
+    self
+  end
+
+  def %(n)
+    if @begin.is_a?(Numeric) && @end.is_a?(Numeric)
+      ::Enumerator::ArithmeticSequence.new(self, n, :%)
+    else
+      step(n)
+    end
+  end
+
+  def bsearch(&block)
+    return enum_for(:bsearch) unless block_given?
+
+    if `is_infinite(self) && (self.begin.$$is_number || self.end.$$is_number)`
+      ::Kernel.raise ::NotImplementedError, "Can't #bsearch an infinite range"
+    end
+
+    unless `self.begin.$$is_number && self.end.$$is_number`
+      ::Kernel.raise ::TypeError, "can't do binary search for #{@begin.class}"
+    end
+
+    to_a.bsearch(&block)
+  end
+
+  def to_s
+    "#{@begin || ''}#{@excl ? '...' : '..'}#{@end || ''}"
+  end
+
+  def inspect
+    "#{@begin && @begin.inspect}#{@excl ? '...' : '..'}#{@end && @end.inspect}"
+  end
+
+  def marshal_load(args)
+    @begin = args[:begin]
+    @end = args[:end]
+    @excl = args[:excl]
+  end
+
+  def hash
+    [@begin, @end, @excl].hash
+  end
+
+  alias == eql?
+  alias include? cover?
+  alias member? cover?
+end
diff --git a/opal/corelib/rational.rb b/opal/corelib/rational.rb
new file mode 100644
index 00000000..db070dab
--- /dev/null
+++ b/opal/corelib/rational.rb
@@ -0,0 +1,393 @@
+require 'corelib/numeric'
+require 'corelib/rational/base'
+
+class ::Rational < ::Numeric
+  def self.reduce(num, den)
+    num = num.to_i
+    den = den.to_i
+
+    if den == 0
+      ::Kernel.raise ::ZeroDivisionError, 'divided by 0'
+    elsif den < 0
+      num = -num
+      den = -den
+    elsif den == 1
+      return new(num, den)
+    end
+
+    gcd = num.gcd(den)
+
+    new(num / gcd, den / gcd)
+  end
+
+  def self.convert(num, den)
+    if num.nil? || den.nil?
+      ::Kernel.raise ::TypeError, 'cannot convert nil into Rational'
+    end
+
+    if ::Integer === num && ::Integer === den
+      return reduce(num, den)
+    end
+
+    if ::Float === num || ::String === num || ::Complex === num
+      num = num.to_r
+    end
+
+    if ::Float === den || ::String === den || ::Complex === den
+      den = den.to_r
+    end
+
+    if den.equal?(1) && !(::Integer === num)
+      ::Opal.coerce_to!(num, ::Rational, :to_r)
+    elsif ::Numeric === num && ::Numeric === den
+      num / den
+    else
+      reduce(num, den)
+    end
+  end
+
+  def initialize(num, den)
+    @num = num
+    @den = den
+  end
+
+  def numerator
+    @num
+  end
+
+  def denominator
+    @den
+  end
+
+  def coerce(other)
+    case other
+    when ::Rational
+      [other, self]
+
+    when ::Integer
+      [other.to_r, self]
+
+    when ::Float
+      [other, to_f]
+    end
+  end
+
+  def ==(other)
+    case other
+    when ::Rational
+      @num == other.numerator && @den == other.denominator
+
+    when ::Integer
+      @num == other && @den == 1
+
+    when ::Float
+      to_f == other
+
+    else
+      other == self
+    end
+  end
+
+  def <=>(other)
+    case other
+    when ::Rational
+      @num * other.denominator - @den * other.numerator <=> 0
+
+    when ::Integer
+      @num - @den * other <=> 0
+
+    when ::Float
+      to_f <=> other
+
+    else
+      __coerced__ :<=>, other
+    end
+  end
+
+  def +(other)
+    case other
+    when ::Rational
+      num = @num * other.denominator + @den * other.numerator
+      den = @den * other.denominator
+
+      ::Kernel.Rational(num, den)
+
+    when ::Integer
+      ::Kernel.Rational(@num + other * @den, @den)
+
+    when ::Float
+      to_f + other
+
+    else
+      __coerced__ :+, other
+    end
+  end
+
+  def -(other)
+    case other
+    when ::Rational
+      num = @num * other.denominator - @den * other.numerator
+      den = @den * other.denominator
+
+      ::Kernel.Rational(num, den)
+
+    when ::Integer
+      ::Kernel.Rational(@num - other * @den, @den)
+
+    when ::Float
+      to_f - other
+
+    else
+      __coerced__ :-, other
+    end
+  end
+
+  def *(other)
+    case other
+    when ::Rational
+      num = @num * other.numerator
+      den = @den * other.denominator
+
+      ::Kernel.Rational(num, den)
+
+    when ::Integer
+      ::Kernel.Rational(@num * other, @den)
+
+    when ::Float
+      to_f * other
+
+    else
+      __coerced__ :*, other
+    end
+  end
+
+  def /(other)
+    case other
+    when ::Rational
+      num = @num * other.denominator
+      den = @den * other.numerator
+
+      ::Kernel.Rational(num, den)
+
+    when ::Integer
+      if other == 0
+        to_f / 0.0
+      else
+        ::Kernel.Rational(@num, @den * other)
+      end
+
+    when ::Float
+      to_f / other
+
+    else
+      __coerced__ :/, other
+    end
+  end
+
+  def **(other)
+    case other
+    when ::Integer
+      if self == 0 && other < 0
+        ::Float::INFINITY
+      elsif other > 0
+        ::Kernel.Rational(@num**other, @den**other)
+      elsif other < 0
+        ::Kernel.Rational(@den**-other, @num**-other)
+      else
+        ::Kernel.Rational(1, 1)
+      end
+
+    when ::Float
+      to_f**other
+
+    when ::Rational
+      if other == 0
+        ::Kernel.Rational(1, 1)
+      elsif other.denominator == 1
+        if other < 0
+          ::Kernel.Rational(@den**other.numerator.abs, @num**other.numerator.abs)
+        else
+          ::Kernel.Rational(@num**other.numerator, @den**other.numerator)
+        end
+      elsif self == 0 && other < 0
+        ::Kernel.raise ::ZeroDivisionError, 'divided by 0'
+      else
+        to_f**other
+      end
+
+    else
+      __coerced__ :**, other
+    end
+  end
+
+  def abs
+    ::Kernel.Rational(@num.abs, @den.abs)
+  end
+
+  def ceil(precision = 0)
+    if precision == 0
+      (-(-@num / @den)).ceil
+    else
+      with_precision(:ceil, precision)
+    end
+  end
+
+  def floor(precision = 0)
+    if precision == 0
+      (-(-@num / @den)).floor
+    else
+      with_precision(:floor, precision)
+    end
+  end
+
+  def hash
+    "Rational:#{@num}:#{@den}"
+  end
+
+  def inspect
+    "(#{self})"
+  end
+
+  def rationalize(eps = undefined)
+    %x{
+      if (arguments.length > 1) {
+        #{::Kernel.raise ::ArgumentError, "wrong number of arguments (#{`arguments.length`} for 0..1)"};
+      }
+
+      if (eps == null) {
+        return self;
+      }
+
+      var e = #{eps.abs},
+          a = #{self - `e`},
+          b = #{self + `e`};
+
+      var p0 = 0,
+          p1 = 1,
+          q0 = 1,
+          q1 = 0,
+          p2, q2;
+
+      var c, k, t;
+
+      while (true) {
+        c = #{`a`.ceil};
+
+        if (#{`c` <= `b`}) {
+          break;
+        }
+
+        k  = c - 1;
+        p2 = k * p1 + p0;
+        q2 = k * q1 + q0;
+        t  = #{1 / (`b` - `k`)};
+        b  = #{1 / (`a` - `k`)};
+        a  = t;
+
+        p0 = p1;
+        q0 = q1;
+        p1 = p2;
+        q1 = q2;
+      }
+
+      return #{::Kernel.Rational(`c * p1 + p0`, `c * q1 + q0`)};
+    }
+  end
+
+  def round(precision = 0)
+    return with_precision(:round, precision) unless precision == 0
+    return 0 if @num == 0
+    return @num if @den == 1
+
+    num = @num.abs * 2 + @den
+    den = @den * 2
+
+    approx = (num / den).truncate
+
+    if @num < 0
+      -approx
+    else
+      approx
+    end
+  end
+
+  def to_f
+    @num / @den
+  end
+
+  def to_i
+    truncate
+  end
+
+  def to_r
+    self
+  end
+
+  def to_s
+    "#{@num}/#{@den}"
+  end
+
+  def truncate(precision = 0)
+    if precision == 0
+      @num < 0 ? ceil : floor
+    else
+      with_precision(:truncate, precision)
+    end
+  end
+
+  def with_precision(method, precision)
+    ::Kernel.raise ::TypeError, 'not an Integer' unless ::Integer === precision
+
+    p = 10**precision
+    s = self * p
+
+    if precision < 1
+      (s.send(method) / p).to_i
+    else
+      ::Kernel.Rational(s.send(method), p)
+    end
+  end
+
+  def self.from_string(string)
+    %x{
+      var str = string.trimLeft(),
+          re = /^[+-]?[\d_]+(\.[\d_]+)?/,
+          match = str.match(re),
+          numerator, denominator;
+
+      function isFloat() {
+        return re.test(str);
+      }
+
+      function cutFloat() {
+        var match = str.match(re);
+        var number = match[0];
+        str = str.slice(number.length);
+        return number.replace(/_/g, '');
+      }
+
+      if (isFloat()) {
+        numerator = parseFloat(cutFloat());
+
+        if (str[0] === '/') {
+          // rational real part
+          str = str.slice(1);
+
+          if (isFloat()) {
+            denominator = parseFloat(cutFloat());
+            return #{::Kernel.Rational(`numerator`, `denominator`)};
+          } else {
+            return #{::Kernel.Rational(`numerator`, 1)};
+          }
+        } else {
+          return #{::Kernel.Rational(`numerator`, 1)};
+        }
+      } else {
+        return #{::Kernel.Rational(0, 1)};
+      }
+    }
+  end
+
+  alias divide /
+  alias quo /
+end
diff --git a/opal/corelib/rational/base.rb b/opal/corelib/rational/base.rb
new file mode 100644
index 00000000..dbc874be
--- /dev/null
+++ b/opal/corelib/rational/base.rb
@@ -0,0 +1,11 @@
+module ::Kernel
+  def Rational(numerator, denominator = 1)
+    ::Rational.convert(numerator, denominator)
+  end
+end
+
+class ::String
+  def to_r
+    ::Rational.from_string(self)
+  end
+end
diff --git a/opal/corelib/regexp.rb b/opal/corelib/regexp.rb
new file mode 100644
index 00000000..a61ca2c7
--- /dev/null
+++ b/opal/corelib/regexp.rb
@@ -0,0 +1,462 @@
+# helpers: coerce_to
+
+class ::RegexpError < ::StandardError; end
+
+class ::Regexp < `RegExp`
+  self::IGNORECASE = 1
+  self::EXTENDED = 2
+  self::MULTILINE = 4
+
+  `Opal.prop(self.$$prototype, '$$is_regexp', true)`
+
+  class << self
+    def allocate
+      allocated = super
+      `#{allocated}.uninitialized = true`
+      allocated
+    end
+
+    def escape(string)
+      `Opal.escape_regexp(string)`
+    end
+
+    def last_match(n = nil)
+      if n.nil?
+        $~
+      elsif $~
+        $~[n]
+      end
+    end
+
+    def union(*parts)
+      %x{
+        var is_first_part_array, quoted_validated, part, options, each_part_options;
+        if (parts.length == 0) {
+          return /(?!)/;
+        }
+        // return fast if there's only one element
+        if (parts.length == 1 && parts[0].$$is_regexp) {
+          return parts[0];
+        }
+        // cover the 2 arrays passed as arguments case
+        is_first_part_array = parts[0].$$is_array;
+        if (parts.length > 1 && is_first_part_array) {
+          #{::Kernel.raise ::TypeError, 'no implicit conversion of Array into String'}
+        }
+        // deal with splat issues (related to https://github.com/opal/opal/issues/858)
+        if (is_first_part_array) {
+          parts = parts[0];
+        }
+        options = undefined;
+        quoted_validated = [];
+        for (var i=0; i < parts.length; i++) {
+          part = parts[i];
+          if (part.$$is_string) {
+            quoted_validated.push(#{escape(`part`)});
+          }
+          else if (part.$$is_regexp) {
+            each_part_options = #{`part`.options};
+            if (options != undefined && options != each_part_options) {
+              #{::Kernel.raise ::TypeError, 'All expressions must use the same options'}
+            }
+            options = each_part_options;
+            quoted_validated.push('('+part.source+')');
+          }
+          else {
+            quoted_validated.push(#{escape(`part`.to_str)});
+          }
+        }
+      }
+      # Take advantage of logic that can parse options from JS Regex
+      new(`quoted_validated`.join('|'), `options`)
+    end
+
+    def new(regexp, options = undefined)
+      %x{
+        if (regexp.$$is_regexp) {
+          return new RegExp(regexp);
+        }
+
+        regexp = #{::Opal.coerce_to!(regexp, ::String, :to_str)};
+
+        if (regexp.charAt(regexp.length - 1) === '\\' && regexp.charAt(regexp.length - 2) !== '\\') {
+          #{::Kernel.raise ::RegexpError, "too short escape sequence: /#{regexp}/"}
+        }
+
+        regexp = regexp.replace('\\A', '^').replace('\\z', '$')
+
+        if (options === undefined || #{!options}) {
+          return new RegExp(regexp);
+        }
+
+        if (options.$$is_number) {
+          var temp = '';
+          if (#{IGNORECASE} & options) { temp += 'i'; }
+          if (#{MULTILINE}  & options) { temp += 'm'; }
+          options = temp;
+        }
+        else {
+          options = 'i';
+        }
+
+        return new RegExp(regexp, options);
+      }
+    end
+
+    alias compile new
+    alias quote escape
+  end
+
+  def ==(other)
+    `other instanceof RegExp && self.toString() === other.toString()`
+  end
+
+  def ===(string)
+    `#{match(::Opal.coerce_to?(string, ::String, :to_str))} !== nil`
+  end
+
+  def =~(string)
+    match(string) && $~.begin(0)
+  end
+
+  def inspect
+    # Use a regexp to extract the regular expression and the optional mode modifiers from the string.
+    # In the regular expression, escape any front slash (not already escaped) with a backslash.
+    %x{
+      var regexp_format = /^\/(.*)\/([^\/]*)$/;
+      var value = self.toString();
+      var matches = regexp_format.exec(value);
+      if (matches) {
+        var regexp_pattern = matches[1];
+        var regexp_flags = matches[2];
+        var chars = regexp_pattern.split('');
+        var chars_length = chars.length;
+        var char_escaped = false;
+        var regexp_pattern_escaped = '';
+        for (var i = 0; i < chars_length; i++) {
+          var current_char = chars[i];
+          if (!char_escaped && current_char == '/') {
+            regexp_pattern_escaped = regexp_pattern_escaped.concat('\\');
+          }
+          regexp_pattern_escaped = regexp_pattern_escaped.concat(current_char);
+          if (current_char == '\\') {
+            if (char_escaped) {
+              // does not over escape
+              char_escaped = false;
+            } else {
+              char_escaped = true;
+            }
+          } else {
+            char_escaped = false;
+          }
+        }
+        return '/' + regexp_pattern_escaped + '/' + regexp_flags;
+      } else {
+        return value;
+      }
+    }
+  end
+
+  def match(string, pos = undefined, &block)
+    %x{
+      if (self.uninitialized) {
+        #{::Kernel.raise ::TypeError, 'uninitialized Regexp'}
+      }
+
+      if (pos === undefined) {
+        if (string === nil) return #{$~ = nil};
+        var m = self.exec($coerce_to(string, #{::String}, 'to_str'));
+        if (m) {
+          #{$~ = ::MatchData.new(`self`, `m`)};
+          return block === nil ? #{$~} : #{yield $~};
+        } else {
+          return #{$~ = nil};
+        }
+      }
+
+      pos = $coerce_to(pos, #{::Integer}, 'to_int');
+
+      if (string === nil) {
+        return #{$~ = nil};
+      }
+
+      string = $coerce_to(string, #{::String}, 'to_str');
+
+      if (pos < 0) {
+        pos += string.length;
+        if (pos < 0) {
+          return #{$~ = nil};
+        }
+      }
+
+      // global RegExp maintains state, so not using self/this
+      var md, re = Opal.global_regexp(self);
+
+      while (true) {
+        md = re.exec(string);
+        if (md === null) {
+          return #{$~ = nil};
+        }
+        if (md.index >= pos) {
+          #{$~ = ::MatchData.new(`re`, `md`)};
+          return block === nil ? #{$~} : #{yield $~};
+        }
+        re.lastIndex = md.index + 1;
+      }
+    }
+  end
+
+  def match?(string, pos = undefined)
+    %x{
+      if (self.uninitialized) {
+        #{::Kernel.raise ::TypeError, 'uninitialized Regexp'}
+      }
+
+      if (pos === undefined) {
+        return string === nil ? false : self.test($coerce_to(string, #{::String}, 'to_str'));
+      }
+
+      pos = $coerce_to(pos, #{::Integer}, 'to_int');
+
+      if (string === nil) {
+        return false;
+      }
+
+      string = $coerce_to(string, #{::String}, 'to_str');
+
+      if (pos < 0) {
+        pos += string.length;
+        if (pos < 0) {
+          return false;
+        }
+      }
+
+      // global RegExp maintains state, so not using self/this
+      var md, re = Opal.global_regexp(self);
+
+      md = re.exec(string);
+      if (md === null || md.index < pos) {
+        return false;
+      } else {
+        return true;
+      }
+    }
+  end
+
+  def names
+    source.scan(/\(?<(\w+)>/, no_matchdata: true).map(&:first).uniq
+  end
+
+  def named_captures
+    source.scan(/\(?<(\w+)>/, no_matchdata: true) # Scan for capture groups
+          .map(&:first)                           # Get the first regexp match (\w+)
+          .each_with_index                        # Add index to an iterator
+          .group_by(&:first)                      # Group by the capture group names
+          .transform_values do |i|                # Convert hash values
+            i.map { |j| j.last + 1 }              # Drop the capture group names; increase indexes by 1
+          end
+  end
+
+  def ~
+    self =~ $_
+  end
+
+  def source
+    `self.source`
+  end
+
+  def options
+    # Flags would be nice to use with this, but still experimental - https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp/flags
+    %x{
+      if (self.uninitialized) {
+        #{::Kernel.raise ::TypeError, 'uninitialized Regexp'}
+      }
+      var result = 0;
+      // should be supported in IE6 according to https://msdn.microsoft.com/en-us/library/7f5z26w4(v=vs.94).aspx
+      if (self.multiline) {
+        result |= #{MULTILINE};
+      }
+      if (self.ignoreCase) {
+        result |= #{IGNORECASE};
+      }
+      return result;
+    }
+  end
+
+  def casefold?
+    `self.ignoreCase`
+  end
+
+  alias eql? ==
+  alias to_s source
+end
+
+class MatchData
+  attr_reader :post_match, :pre_match, :regexp, :string
+
+  def initialize(regexp, match_groups, no_matchdata: false)
+    $~          = self unless no_matchdata
+    @regexp     = regexp
+    @begin      = `match_groups.index`
+    @string     = `match_groups.input`
+    @pre_match  = `match_groups.input.slice(0, match_groups.index)`
+    @post_match = `match_groups.input.slice(match_groups.index + match_groups[0].length)`
+    @matches    = []
+
+    %x{
+      for (var i = 0, length = match_groups.length; i < length; i++) {
+        var group = match_groups[i];
+
+        if (group == null) {
+          #{@matches}.push(nil);
+        }
+        else {
+          #{@matches}.push(group);
+        }
+      }
+    }
+  end
+
+  def match(idx)
+    if (match = self[idx])
+      match
+    elsif idx.is_a?(Integer) && idx >= length
+      ::Kernel.raise ::IndexError, "index #{idx} out of matches"
+    end
+  end
+
+  def match_length(idx)
+    match(idx)&.length
+  end
+
+  def [](*args)
+    %x{
+      if (args[0].$$is_string) {
+        if (#{!regexp.names.include?(args[0])}) {
+          #{::Kernel.raise ::IndexError, "undefined group name reference: #{args[0]}"}
+        }
+        return #{named_captures[args[0]]}
+      }
+      else {
+        return #{@matches[*args]}
+      }
+    }
+  end
+
+  def offset(n)
+    %x{
+      if (n !== 0) {
+        #{::Kernel.raise ::ArgumentError, 'MatchData#offset only supports 0th element'}
+      }
+      return [self.begin, self.begin + self.matches[n].length];
+    }
+  end
+
+  def ==(other)
+    return false unless ::MatchData === other
+
+    `self.string == other.string` &&
+      `self.regexp.toString() == other.regexp.toString()` &&
+      `self.pre_match == other.pre_match` &&
+      `self.post_match == other.post_match` &&
+      `self.begin == other.begin`
+  end
+
+  def begin(n)
+    %x{
+      if (n !== 0) {
+        #{::Kernel.raise ::ArgumentError, 'MatchData#begin only supports 0th element'}
+      }
+      return self.begin;
+    }
+  end
+
+  def end(n)
+    %x{
+      if (n !== 0) {
+        #{::Kernel.raise ::ArgumentError, 'MatchData#end only supports 0th element'}
+      }
+      return self.begin + self.matches[n].length;
+    }
+  end
+
+  def captures
+    `#{@matches}.slice(1)`
+  end
+
+  def named_captures
+    matches = captures
+    regexp.named_captures.transform_values do |i|
+      matches[i.last - 1]
+    end
+  end
+
+  def names
+    regexp.names
+  end
+
+  def inspect
+    %x{
+      var str = "#<MatchData " + #{`#{@matches}[0]`.inspect};
+
+      if (#{regexp.names.empty?}) {
+        for (var i = 1, length = #{@matches}.length; i < length; i++) {
+          str += " " + i + ":" + #{`#{@matches}[i]`.inspect};
+        }
+      }
+      else {
+        #{ named_captures.each do |k, v|
+             %x{
+               str += " " + #{k} + ":" + #{v.inspect}
+             }
+           end }
+      }
+
+      return str + ">";
+    }
+  end
+
+  def length
+    `#{@matches}.length`
+  end
+
+  def to_a
+    @matches
+  end
+
+  def to_s
+    `#{@matches}[0]`
+  end
+
+  def values_at(*args)
+    %x{
+      var i, a, index, values = [];
+
+      for (i = 0; i < args.length; i++) {
+
+        if (args[i].$$is_range) {
+          a = #{`args[i]`.to_a};
+          a.unshift(i, 1);
+          Array.prototype.splice.apply(args, a);
+        }
+
+        index = #{::Opal.coerce_to!(`args[i]`, ::Integer, :to_int)};
+
+        if (index < 0) {
+          index += #{@matches}.length;
+          if (index < 0) {
+            values.push(nil);
+            continue;
+          }
+        }
+
+        values.push(#{@matches}[index]);
+      }
+
+      return values;
+    }
+  end
+
+  alias eql? ==
+  alias size length
+end
diff --git a/opal/corelib/runtime.js b/opal/corelib/runtime.js
new file mode 100644
index 00000000..b7fd1c30
--- /dev/null
+++ b/opal/corelib/runtime.js
@@ -0,0 +1,2886 @@
+(function(global_object) {
+  "use strict";
+
+  // @note
+  //   A few conventions for the documentation of this file:
+  //   1. Always use "//" (in contrast with "/**/")
+  //   2. The syntax used is Yardoc (yardoc.org), which is intended for Ruby (se below)
+  //   3. `@param` and `@return` types should be preceded by `JS.` when referring to
+  //      JavaScript constructors (e.g. `JS.Function`) otherwise Ruby is assumed.
+  //   4. `nil` and `null` being unambiguous refer to the respective
+  //      objects/values in Ruby and JavaScript
+  //   5. This is still WIP :) so please give feedback and suggestions on how
+  //      to improve or for alternative solutions
+  //
+  //   The way the code is digested before going through Yardoc is a secret kept
+  //   in the docs repo (https://github.com/opal/docs/tree/master).
+
+  var console;
+
+  // Detect the global object
+  if (typeof(globalThis) !== 'undefined') { global_object = globalThis; }
+  else if (typeof(global) !== 'undefined') { global_object = global; }
+  else if (typeof(window) !== 'undefined') { global_object = window; }
+
+  // Setup a dummy console object if missing
+  if (typeof(global_object.console) === 'object') {
+    console = global_object.console;
+  } else if (global_object.console == null) {
+    console = global_object.console = {};
+  } else {
+    console = {};
+  }
+
+  if (!('log' in console)) { console.log = function () {}; }
+  if (!('warn' in console)) { console.warn = console.log; }
+
+  if (typeof(global_object.Opal) !== 'undefined') {
+    console.warn('Opal already loaded. Loading twice can cause troubles, please fix your setup.');
+    return global_object.Opal;
+  }
+
+  var nil;
+
+  // The actual class for BasicObject
+  var BasicObject;
+
+  // The actual Object class.
+  // The leading underscore is to avoid confusion with window.Object()
+  var _Object;
+
+  // The actual Module class
+  var Module;
+
+  // The actual Class class
+  var Class;
+
+  // The Opal.Opal class (helpers etc.)
+  var _Opal;
+
+  // The Kernel module
+  var Kernel;
+
+  // The Opal object that is exposed globally
+  var Opal = global_object.Opal = {};
+
+  // This is a useful reference to global object inside ruby files
+  Opal.global = global_object;
+  global_object.Opal = Opal;
+
+  // Configure runtime behavior with regards to require and unsupported features
+  Opal.config = {
+    missing_require_severity: 'error',        // error, warning, ignore
+    unsupported_features_severity: 'warning', // error, warning, ignore
+    experimental_features_severity: 'warning',// warning, ignore
+    enable_stack_trace: true                  // true, false
+  };
+
+  // Minify common function calls
+  var $has_own   = Object.hasOwnProperty;
+  var $bind      = Function.prototype.bind;
+  var $set_proto = Object.setPrototypeOf;
+  var $slice     = Array.prototype.slice;
+  var $splice    = Array.prototype.splice;
+
+  // Nil object id is always 4
+  var nil_id = 4;
+
+  // Generates even sequential numbers greater than 4
+  // (nil_id) to serve as unique ids for ruby objects
+  var unique_id = nil_id;
+
+  // Return next unique id
+  Opal.uid = function() {
+    unique_id += 2;
+    return unique_id;
+  };
+
+  // Retrieve or assign the id of an object
+  Opal.id = function(obj) {
+    if (obj.$$is_number) return (obj * 2)+1;
+    if (obj.$$id != null) {
+      return obj.$$id;
+    }
+    $prop(obj, '$$id', Opal.uid());
+    return obj.$$id;
+  };
+
+  // Globals table
+  Opal.gvars = {};
+
+  // Exit function, this should be replaced by platform specific implementation
+  // (See nodejs and chrome for examples)
+  Opal.exit = function(status) { if (Opal.gvars.DEBUG) console.log('Exited with status '+status); };
+
+  // keeps track of exceptions for $!
+  Opal.exceptions = [];
+
+  // @private
+  // Pops an exception from the stack and updates `$!`.
+  Opal.pop_exception = function() {
+    var exception = Opal.exceptions.pop();
+    if (exception) {
+      Opal.gvars["!"] = exception;
+      Opal.gvars["@"] = exception.$backtrace();
+    }
+    else {
+      Opal.gvars["!"] = Opal.gvars["@"] = nil;
+    }
+  };
+
+  function $prop(object, name, initialValue) {
+    if (typeof(object) === "string") {
+      // Special case for:
+      //   s = "string"
+      //   def s.m; end
+      // String class is the only class that:
+      // + compiles to JS primitive
+      // + allows method definition directly on instances
+      // numbers, true, false and null do not support it.
+      object[name] = initialValue;
+    } else {
+      Object.defineProperty(object, name, {
+        value: initialValue,
+        enumerable: false,
+        configurable: true,
+        writable: true
+      });
+    }
+  }
+
+  Opal.prop = $prop;
+
+  // @deprecated
+  Opal.defineProperty = Opal.prop;
+
+  Opal.slice = $slice;
+
+
+  // Helpers
+  // -----
+
+  var $truthy = Opal.truthy = function(val) {
+    return false !== val && nil !== val && undefined !== val && null !== val && (!(val instanceof Boolean) || true === val.valueOf());
+  };
+
+  Opal.falsy = function(val) {
+    return !$truthy(val);
+  };
+
+  Opal.type_error = function(object, type, method, coerced) {
+    object = object.$$class;
+
+    if (coerced && method) {
+      coerced = coerced.$$class;
+      return Opal.TypeError.$new(
+        "can't convert " + object + " into " + type +
+        " (" + object + "#" + method + " gives " + coerced + ")"
+      )
+    } else {
+      return Opal.TypeError.$new(
+        "no implicit conversion of " + object + " into " + type
+      )
+    }
+  };
+
+  Opal.coerce_to = function(object, type, method, args) {
+    var body;
+
+    if (method === 'to_int' && type === Opal.Integer && object.$$is_number)
+      return object < 0 ? Math.ceil(object) : Math.floor(object);
+
+    if (method === 'to_str' && type === Opal.String && object.$$is_string)
+      return object;
+
+    if (Opal.is_a(object, type)) return object;
+
+    // Fast path for the most common situation
+    if (object['$respond_to?'].$$pristine && object.$method_missing.$$pristine) {
+      body = object['$' + method];
+      if (body == null || body.$$stub) throw Opal.type_error(object, type);
+      return body.apply(object, args);
+    }
+
+    if (!object['$respond_to?'](method)) {
+      throw Opal.type_error(object, type);
+    }
+
+    if (args == null) args = [];
+    return Opal.send(object, method, args);
+  }
+
+  Opal.respond_to = function(obj, jsid, include_all) {
+    if (obj == null || !obj.$$class) return false;
+    include_all = !!include_all;
+    var body = obj[jsid];
+
+    if (obj['$respond_to?'].$$pristine) {
+      if (typeof(body) === "function" && !body.$$stub) {
+        return true;
+      }
+      if (!obj['$respond_to_missing?'].$$pristine) {
+        return Opal.send(obj, obj['$respond_to_missing?'], [jsid.substr(1), include_all]);
+      }
+    } else {
+      return Opal.send(obj, obj['$respond_to?'], [jsid.substr(1), include_all]);
+    }
+  }
+
+  // TracePoint support
+  // ------------------
+  //
+  // Support for `TracePoint.trace(:class) do ... end`
+  Opal.trace_class = false;
+  Opal.tracers_for_class = [];
+
+  function invoke_tracers_for_class(klass_or_module) {
+    var i, ii, tracer;
+
+    for(i = 0, ii = Opal.tracers_for_class.length; i < ii; i++) {
+      tracer = Opal.tracers_for_class[i];
+      tracer.trace_object = klass_or_module;
+      tracer.block.$call(tracer);
+    }
+  }
+
+  function handle_autoload(cref, name) {
+    if (!cref.$$autoload[name].loaded) {
+      cref.$$autoload[name].loaded = true;
+      try {
+        Opal.Kernel.$require(cref.$$autoload[name].path);
+      } catch (e) {
+        cref.$$autoload[name].exception = e;
+        throw e;
+      }
+      cref.$$autoload[name].required = true;
+      if (cref.$$const[name] != null) {
+        cref.$$autoload[name].success = true;
+        return cref.$$const[name];
+      }
+    } else if (cref.$$autoload[name].loaded && !cref.$$autoload[name].required) {
+      if (cref.$$autoload[name].exception) { throw cref.$$autoload[name].exception; }
+    }
+  }
+
+  // Constants
+  // ---------
+  //
+  // For future reference:
+  // - The Rails autoloading guide (http://guides.rubyonrails.org/v5.0/autoloading_and_reloading_constants.html)
+  // - @ConradIrwin's 2012 post on “Everything you ever wanted to know about constant lookup in Ruby” (http://cirw.in/blog/constant-lookup.html)
+  //
+  // Legend of MRI concepts/names:
+  // - constant reference (cref): the module/class that acts as a namespace
+  // - nesting: the namespaces wrapping the current scope, e.g. nesting inside
+  //            `module A; module B::C; end; end` is `[B::C, A]`
+
+  // Get the constant in the scope of the current cref
+  function const_get_name(cref, name) {
+    if (cref) {
+      if (cref.$$const[name] != null) { return cref.$$const[name]; }
+      if (cref.$$autoload && cref.$$autoload[name]) {
+        return handle_autoload(cref, name);
+      }
+    }
+  }
+
+  // Walk up the nesting array looking for the constant
+  function const_lookup_nesting(nesting, name) {
+    var i, ii, constant;
+
+    if (nesting.length === 0) return;
+
+    // If the nesting is not empty the constant is looked up in its elements
+    // and in order. The ancestors of those elements are ignored.
+    for (i = 0, ii = nesting.length; i < ii; i++) {
+      constant = nesting[i].$$const[name];
+      if (constant != null) {
+        return constant;
+      } else if (nesting[i].$$autoload && nesting[i].$$autoload[name]) {
+        return handle_autoload(nesting[i], name);
+      }
+    }
+  }
+
+  // Walk up the ancestors chain looking for the constant
+  function const_lookup_ancestors(cref, name) {
+    var i, ii, ancestors;
+
+    if (cref == null) return;
+
+    ancestors = Opal.ancestors(cref);
+
+    for (i = 0, ii = ancestors.length; i < ii; i++) {
+      if (ancestors[i].$$const && $has_own.call(ancestors[i].$$const, name)) {
+        return ancestors[i].$$const[name];
+      } else if (ancestors[i].$$autoload && ancestors[i].$$autoload[name]) {
+        return handle_autoload(ancestors[i], name);
+      }
+    }
+  }
+
+  // Walk up Object's ancestors chain looking for the constant,
+  // but only if cref is missing or a module.
+  function const_lookup_Object(cref, name) {
+    if (cref == null || cref.$$is_module) {
+      return const_lookup_ancestors(_Object, name);
+    }
+  }
+
+  // Call const_missing if nothing else worked
+  function const_missing(cref, name, skip_missing) {
+    if (!skip_missing) {
+      return (cref || _Object).$const_missing(name);
+    }
+  }
+
+  // Look for the constant just in the current cref or call `#const_missing`
+  Opal.const_get_local = function(cref, name, skip_missing) {
+    var result;
+
+    if (cref == null) return;
+
+    if (cref === '::') cref = _Object;
+
+    if (!cref.$$is_module && !cref.$$is_class) {
+      throw new Opal.TypeError(cref.toString() + " is not a class/module");
+    }
+
+    result = const_get_name(cref, name);              if (result != null) return result;
+    result = const_missing(cref, name, skip_missing); if (result != null) return result;
+  };
+
+  // Look for the constant relative to a cref or call `#const_missing` (when the
+  // constant is prefixed by `::`).
+  Opal.const_get_qualified = function(cref, name, skip_missing) {
+    var result, cache, cached, current_version = Opal.const_cache_version;
+
+    if (name == null) {
+      // A shortpath for calls like ::String => $$$("String")
+      result = const_get_name(_Object, cref);
+
+      if (result != null) return result;
+      return Opal.const_get_qualified(_Object, cref, skip_missing);
+    }
+
+    if (cref == null) return;
+
+    if (cref === '::') cref = _Object;
+
+    if (!cref.$$is_module && !cref.$$is_class) {
+      throw new Opal.TypeError(cref.toString() + " is not a class/module");
+    }
+
+    if ((cache = cref.$$const_cache) == null) {
+      $prop(cref, '$$const_cache', Object.create(null));
+      cache = cref.$$const_cache;
+    }
+    cached = cache[name];
+
+    if (cached == null || cached[0] !== current_version) {
+      ((result = const_get_name(cref, name))              != null) ||
+      ((result = const_lookup_ancestors(cref, name))      != null);
+      cache[name] = [current_version, result];
+    } else {
+      result = cached[1];
+    }
+
+    return result != null ? result : const_missing(cref, name, skip_missing);
+  };
+
+  // Initialize the top level constant cache generation counter
+  Opal.const_cache_version = 1;
+
+  // Look for the constant in the open using the current nesting and the nearest
+  // cref ancestors or call `#const_missing` (when the constant has no :: prefix).
+  Opal.const_get_relative = function(nesting, name, skip_missing) {
+    var cref = nesting[0], result, current_version = Opal.const_cache_version, cache, cached;
+
+    if ((cache = nesting.$$const_cache) == null) {
+      $prop(nesting, '$$const_cache', Object.create(null));
+      cache = nesting.$$const_cache;
+    }
+    cached = cache[name];
+
+    if (cached == null || cached[0] !== current_version) {
+      ((result = const_get_name(cref, name))              != null) ||
+      ((result = const_lookup_nesting(nesting, name))     != null) ||
+      ((result = const_lookup_ancestors(cref, name))      != null) ||
+      ((result = const_lookup_Object(cref, name))         != null);
+
+      cache[name] = [current_version, result];
+    } else {
+      result = cached[1];
+    }
+
+    return result != null ? result : const_missing(cref, name, skip_missing);
+  };
+
+  // Register the constant on a cref and opportunistically set the name of
+  // unnamed classes/modules.
+  function $const_set(cref, name, value) {
+    if (cref == null || cref === '::') cref = _Object;
+
+    if (value.$$is_a_module) {
+      if (value.$$name == null || value.$$name === nil) value.$$name = name;
+      if (value.$$base_module == null) value.$$base_module = cref;
+    }
+
+    cref.$$const = (cref.$$const || Object.create(null));
+    cref.$$const[name] = value;
+
+    // Add a short helper to navigate constants manually.
+    // @example
+    //   Opal.$$.Regexp.$$.IGNORECASE
+    cref.$$ = cref.$$const;
+
+    Opal.const_cache_version++;
+
+    // Expose top level constants onto the Opal object
+    if (cref === _Object) Opal[name] = value;
+
+    // Name new class directly onto current scope (Opal.Foo.Baz = klass)
+    $prop(cref, name, value);
+
+    return value;
+  };
+
+  Opal.const_set = $const_set;
+
+  // Get all the constants reachable from a given cref, by default will include
+  // inherited constants.
+  Opal.constants = function(cref, inherit) {
+    if (inherit == null) inherit = true;
+
+    var module, modules = [cref], i, ii, constants = {}, constant;
+
+    if (inherit) modules = modules.concat(Opal.ancestors(cref));
+    if (inherit && cref.$$is_module) modules = modules.concat([Opal.Object]).concat(Opal.ancestors(Opal.Object));
+
+    for (i = 0, ii = modules.length; i < ii; i++) {
+      module = modules[i];
+
+      // Do not show Objects constants unless we're querying Object itself
+      if (cref !== _Object && module == _Object) break;
+
+      for (constant in module.$$const) {
+        constants[constant] = true;
+      }
+      if (module.$$autoload) {
+        for (constant in module.$$autoload) {
+          constants[constant] = true;
+        }
+      }
+    }
+
+    return Object.keys(constants);
+  };
+
+  // Remove a constant from a cref.
+  Opal.const_remove = function(cref, name) {
+    Opal.const_cache_version++;
+
+    if (cref.$$const[name] != null) {
+      var old = cref.$$const[name];
+      delete cref.$$const[name];
+      return old;
+    }
+
+    if (cref.$$autoload && cref.$$autoload[name]) {
+      delete cref.$$autoload[name];
+      return nil;
+    }
+
+    throw Opal.NameError.$new("constant "+cref+"::"+cref.$name()+" not defined");
+  };
+
+  // Generates a function that is a curried const_get_relative.
+  Opal.const_get_relative_factory = function(nesting) {
+    return function(name, skip_missing) {
+      return Opal.$$(nesting, name, skip_missing);
+    }
+  }
+
+  // Setup some shortcuts to reduce compiled size
+  Opal.$$ = Opal.const_get_relative;
+  Opal.$$$ = Opal.const_get_qualified;
+  Opal.$r = Opal.const_get_relative_factory;
+
+  // Modules & Classes
+  // -----------------
+
+  // A `class Foo; end` expression in ruby is compiled to call this runtime
+  // method which either returns an existing class of the given name, or creates
+  // a new class in the given `base` scope.
+  //
+  // If a constant with the given name exists, then we check to make sure that
+  // it is a class and also that the superclasses match. If either of these
+  // fail, then we raise a `TypeError`. Note, `superclass` may be null if one
+  // was not specified in the ruby code.
+  //
+  // We pass a constructor to this method of the form `function ClassName() {}`
+  // simply so that classes show up with nicely formatted names inside debuggers
+  // in the web browser (or node/sprockets).
+  //
+  // The `scope` is the current `self` value where the class is being created
+  // from. We use this to get the scope for where the class should be created.
+  // If `scope` is an object (not a class/module), we simple get its class and
+  // use that as the scope instead.
+  //
+  // @param scope        [Object] where the class is being created
+  // @param superclass   [Class,null] superclass of the new class (may be null)
+  // @param singleton    [Boolean,null] a true value denotes we want to allocate
+  //                                    a singleton
+  //
+  // @return new [Class]  or existing ruby class
+  //
+  Opal.allocate_class = function(name, superclass, singleton) {
+    var klass, constructor;
+
+    if (superclass != null && superclass.$$bridge) {
+      // Inheritance from bridged classes requires
+      // calling original JS constructors
+      constructor = function() {
+        var args = $slice.call(arguments),
+            self = new ($bind.apply(superclass.$$constructor, [null].concat(args)))();
+
+        // and replacing a __proto__ manually
+        $set_proto(self, klass.$$prototype);
+        return self;
+      }
+    } else {
+      constructor = function(){};
+    }
+
+    if (name && name !== nil) {
+      $prop(constructor, 'displayName', '::'+name);
+    }
+
+    klass = constructor;
+
+    $prop(klass, '$$name', name);
+    $prop(klass, '$$constructor', constructor);
+    $prop(klass, '$$prototype', constructor.prototype);
+    $prop(klass, '$$const', {});
+    $prop(klass, '$$is_class', true);
+    $prop(klass, '$$is_a_module', true);
+    $prop(klass, '$$super', superclass);
+    $prop(klass, '$$cvars', {});
+    $prop(klass, '$$own_included_modules', []);
+    $prop(klass, '$$own_prepended_modules', []);
+    $prop(klass, '$$ancestors', []);
+    $prop(klass, '$$ancestors_cache_version', null);
+    $prop(klass, '$$subclasses', []);
+
+    $prop(klass.$$prototype, '$$class', klass);
+
+    // By default if there are no singleton class methods
+    // __proto__ is Class.prototype
+    // Later singleton methods generate a singleton_class
+    // and inject it into ancestors chain
+    if (Opal.Class) {
+      $set_proto(klass, Opal.Class.prototype);
+    }
+
+    if (superclass != null) {
+      $set_proto(klass.$$prototype, superclass.$$prototype);
+
+      if (singleton !== true) {
+        // Let's not forbid GC from cleaning up our
+        // subclasses.
+        if (typeof WeakRef !== 'undefined') {
+          // First, let's clean up our array from empty objects.
+          var i, subclass, rebuilt_subclasses = [];
+          for (i = 0; i < superclass.$$subclasses.length; i++) {
+            subclass = superclass.$$subclasses[i];
+            if (subclass.deref() !== undefined) {
+              rebuilt_subclasses.push(subclass);
+            }
+          }
+          // Now, let's add our class.
+          rebuilt_subclasses.push(new WeakRef(klass));
+          superclass.$$subclasses = rebuilt_subclasses;
+        }
+        else {
+          superclass.$$subclasses.push(klass);
+        }
+      }
+
+      if (superclass.$$meta) {
+        // If superclass has metaclass then we have explicitely inherit it.
+        Opal.build_class_singleton_class(klass);
+      }
+    }
+
+    return klass;
+  };
+
+
+  function find_existing_class(scope, name) {
+    // Try to find the class in the current scope
+    var klass = const_get_name(scope, name);
+
+    // If the class exists in the scope, then we must use that
+    if (klass) {
+      // Make sure the existing constant is a class, or raise error
+      if (!klass.$$is_class) {
+        throw Opal.TypeError.$new(name + " is not a class");
+      }
+
+      return klass;
+    }
+  }
+
+  function ensureSuperclassMatch(klass, superclass) {
+    if (klass.$$super !== superclass) {
+      throw Opal.TypeError.$new("superclass mismatch for class " + klass.$$name);
+    }
+  }
+
+  Opal.klass = function(scope, superclass, name) {
+    var bridged;
+
+    if (scope == null || scope == '::') {
+      // Global scope
+      scope = _Object;
+    } else if (!scope.$$is_class && !scope.$$is_module) {
+      // Scope is an object, use its class
+      scope = scope.$$class;
+    }
+
+    // If the superclass is not an Opal-generated class then we're bridging a native JS class
+    if (
+      superclass != null && (!superclass.hasOwnProperty || (
+        superclass.hasOwnProperty && !superclass.hasOwnProperty('$$is_class')
+      ))
+    ) {
+      if (superclass.constructor && superclass.constructor.name == "Function") {
+        bridged = superclass;
+        superclass = _Object;
+      } else {
+        throw Opal.TypeError.$new("superclass must be a Class (" + (
+          (superclass.constructor && (superclass.constructor.name || superclass.constructor.$$name)) ||
+          typeof(superclass)
+        ) + " given)");
+      }
+    }
+
+    var klass = find_existing_class(scope, name);
+
+    if (klass) {
+      if (superclass) {
+        // Make sure existing class has same superclass
+        ensureSuperclassMatch(klass, superclass);
+      }
+
+      if (Opal.trace_class) { invoke_tracers_for_class(klass); }
+
+      return klass;
+    }
+
+    // Class doesn't exist, create a new one with given superclass...
+
+    // Not specifying a superclass means we can assume it to be Object
+    if (superclass == null) {
+      superclass = _Object;
+    }
+
+    // Create the class object (instance of Class)
+    klass = Opal.allocate_class(name, superclass);
+    $const_set(scope, name, klass);
+
+    // Call .inherited() hook with new class on the superclass
+    if (superclass.$inherited) {
+      superclass.$inherited(klass);
+    }
+
+    if (bridged) {
+      Opal.bridge(bridged, klass);
+    }
+
+    if (Opal.trace_class) { invoke_tracers_for_class(klass); }
+
+    return klass;
+  };
+
+  // Define new module (or return existing module). The given `scope` is basically
+  // the current `self` value the `module` statement was defined in. If this is
+  // a ruby module or class, then it is used, otherwise if the scope is a ruby
+  // object then that objects real ruby class is used (e.g. if the scope is the
+  // main object, then the top level `Object` class is used as the scope).
+  //
+  // If a module of the given name is already defined in the scope, then that
+  // instance is just returned.
+  //
+  // If there is a class of the given name in the scope, then an error is
+  // generated instead (cannot have a class and module of same name in same scope).
+  //
+  // Otherwise, a new module is created in the scope with the given name, and that
+  // new instance is returned back (to be referenced at runtime).
+  //
+  // @param  scope [Module, Class] class or module this definition is inside
+  // @param  id   [String] the name of the new (or existing) module
+  //
+  // @return [Module]
+  Opal.allocate_module = function(name) {
+    var constructor = function(){};
+    if (name) {
+      $prop(constructor, 'displayName', name+'.$$constructor');
+    }
+
+    var module = constructor;
+
+    if (name)
+      $prop(constructor, 'displayName', name+'.constructor');
+
+    $prop(module, '$$name', name);
+    $prop(module, '$$prototype', constructor.prototype);
+    $prop(module, '$$const', {});
+    $prop(module, '$$is_module', true);
+    $prop(module, '$$is_a_module', true);
+    $prop(module, '$$cvars', {});
+    $prop(module, '$$iclasses', []);
+    $prop(module, '$$own_included_modules', []);
+    $prop(module, '$$own_prepended_modules', []);
+    $prop(module, '$$ancestors', [module]);
+    $prop(module, '$$ancestors_cache_version', null);
+
+    $set_proto(module, Opal.Module.prototype);
+
+    return module;
+  };
+
+  function find_existing_module(scope, name) {
+    var module = const_get_name(scope, name);
+    if (module == null && scope === _Object) module = const_lookup_ancestors(_Object, name);
+
+    if (module) {
+      if (!module.$$is_module && module !== _Object) {
+        throw Opal.TypeError.$new(name + " is not a module");
+      }
+    }
+
+    return module;
+  }
+
+  Opal.module = function(scope, name) {
+    var module;
+
+    if (scope == null || scope == '::') {
+      // Global scope
+      scope = _Object;
+    } else if (!scope.$$is_class && !scope.$$is_module) {
+      // Scope is an object, use its class
+      scope = scope.$$class;
+    }
+
+    module = find_existing_module(scope, name);
+
+    if (module) {
+
+      if (Opal.trace_class) { invoke_tracers_for_class(module); }
+
+      return module;
+    }
+
+    // Module doesnt exist, create a new one...
+    module = Opal.allocate_module(name);
+    $const_set(scope, name, module);
+
+    if (Opal.trace_class) { invoke_tracers_for_class(module); }
+
+    return module;
+  };
+
+  // Return the singleton class for the passed object.
+  //
+  // If the given object alredy has a singleton class, then it will be stored on
+  // the object as the `$$meta` property. If this exists, then it is simply
+  // returned back.
+  //
+  // Otherwise, a new singleton object for the class or object is created, set on
+  // the object at `$$meta` for future use, and then returned.
+  //
+  // @param object [Object] the ruby object
+  // @return [Class] the singleton class for object
+  Opal.get_singleton_class = function(object) {
+    if (object.$$meta) {
+      return object.$$meta;
+    }
+
+    if (object.hasOwnProperty('$$is_class')) {
+      return Opal.build_class_singleton_class(object);
+    } else if (object.hasOwnProperty('$$is_module')) {
+      return Opal.build_module_singleton_class(object);
+    } else {
+      return Opal.build_object_singleton_class(object);
+    }
+  };
+
+  // Build the singleton class for an existing class. Class object are built
+  // with their singleton class already in the prototype chain and inheriting
+  // from their superclass object (up to `Class` itself).
+  //
+  // NOTE: Actually in MRI a class' singleton class inherits from its
+  // superclass' singleton class which in turn inherits from Class.
+  //
+  // @param klass [Class]
+  // @return [Class]
+  Opal.build_class_singleton_class = function(klass) {
+    var superclass, meta;
+
+    if (klass.$$meta) {
+      return klass.$$meta;
+    }
+
+    // The singleton_class superclass is the singleton_class of its superclass;
+    // but BasicObject has no superclass (its `$$super` is null), thus we
+    // fallback on `Class`.
+    superclass = klass === BasicObject ? Class : Opal.get_singleton_class(klass.$$super);
+
+    meta = Opal.allocate_class(null, superclass, true);
+
+    $prop(meta, '$$is_singleton', true);
+    $prop(meta, '$$singleton_of', klass);
+    $prop(klass, '$$meta', meta);
+    $set_proto(klass, meta.$$prototype);
+    // Restoring ClassName.class
+    $prop(klass, '$$class', Opal.Class);
+
+    return meta;
+  };
+
+  Opal.build_module_singleton_class = function(mod) {
+    if (mod.$$meta) {
+      return mod.$$meta;
+    }
+
+    var meta = Opal.allocate_class(null, Opal.Module, true);
+
+    $prop(meta, '$$is_singleton', true);
+    $prop(meta, '$$singleton_of', mod);
+    $prop(mod, '$$meta', meta);
+    $set_proto(mod, meta.$$prototype);
+    // Restoring ModuleName.class
+    $prop(mod, '$$class', Opal.Module);
+
+    return meta;
+  };
+
+  // Build the singleton class for a Ruby (non class) Object.
+  //
+  // @param object [Object]
+  // @return [Class]
+  Opal.build_object_singleton_class = function(object) {
+    var superclass = object.$$class,
+        klass = Opal.allocate_class(nil, superclass, true);
+
+    $prop(klass, '$$is_singleton', true);
+    $prop(klass, '$$singleton_of', object);
+
+    delete klass.$$prototype.$$class;
+
+    $prop(object, '$$meta', klass);
+
+    $set_proto(object, object.$$meta.$$prototype);
+
+    return klass;
+  };
+
+  Opal.is_method = function(prop) {
+    return (prop[0] === '$' && prop[1] !== '$');
+  };
+
+  Opal.instance_methods = function(mod) {
+    var exclude = [], results = [], ancestors = Opal.ancestors(mod);
+
+    for (var i = 0, l = ancestors.length; i < l; i++) {
+      var ancestor = ancestors[i],
+          proto = ancestor.$$prototype;
+
+      if (proto.hasOwnProperty('$$dummy')) {
+        proto = proto.$$define_methods_on;
+      }
+
+      var props = Object.getOwnPropertyNames(proto);
+
+      for (var j = 0, ll = props.length; j < ll; j++) {
+        var prop = props[j];
+
+        if (Opal.is_method(prop)) {
+          var method_name = prop.slice(1),
+              method = proto[prop];
+
+          if (method.$$stub && exclude.indexOf(method_name) === -1) {
+            exclude.push(method_name);
+          }
+
+          if (!method.$$stub && results.indexOf(method_name) === -1 && exclude.indexOf(method_name) === -1) {
+            results.push(method_name);
+          }
+        }
+      }
+    }
+
+    return results;
+  };
+
+  Opal.own_instance_methods = function(mod) {
+    var results = [],
+        proto = mod.$$prototype;
+
+    if (proto.hasOwnProperty('$$dummy')) {
+      proto = proto.$$define_methods_on;
+    }
+
+    var props = Object.getOwnPropertyNames(proto);
+
+    for (var i = 0, length = props.length; i < length; i++) {
+      var prop = props[i];
+
+      if (Opal.is_method(prop)) {
+        var method = proto[prop];
+
+        if (!method.$$stub) {
+          var method_name = prop.slice(1);
+          results.push(method_name);
+        }
+      }
+    }
+
+    return results;
+  };
+
+  Opal.methods = function(obj) {
+    return Opal.instance_methods(obj.$$meta || obj.$$class);
+  };
+
+  Opal.own_methods = function(obj) {
+    if (obj.$$meta) {
+      return Opal.own_instance_methods(obj.$$meta);
+    }
+    else {
+      return [];
+    }
+  };
+
+  Opal.receiver_methods = function(obj) {
+    var mod = Opal.get_singleton_class(obj);
+    var singleton_methods = Opal.own_instance_methods(mod);
+    var instance_methods = Opal.own_instance_methods(mod.$$super);
+    return singleton_methods.concat(instance_methods);
+  };
+
+  // Returns an object containing all pairs of names/values
+  // for all class variables defined in provided +module+
+  // and its ancestors.
+  //
+  // @param module [Module]
+  // @return [Object]
+  Opal.class_variables = function(module) {
+    var ancestors = Opal.ancestors(module),
+        i, length = ancestors.length,
+        result = {};
+
+    for (i = length - 1; i >= 0; i--) {
+      var ancestor = ancestors[i];
+
+      for (var cvar in ancestor.$$cvars) {
+        result[cvar] = ancestor.$$cvars[cvar];
+      }
+    }
+
+    return result;
+  };
+
+  // Sets class variable with specified +name+ to +value+
+  // in provided +module+
+  //
+  // @param module [Module]
+  // @param name [String]
+  // @param value [Object]
+  Opal.class_variable_set = function(module, name, value) {
+    var ancestors = Opal.ancestors(module),
+        i, length = ancestors.length;
+
+    for (i = length - 2; i >= 0; i--) {
+      var ancestor = ancestors[i];
+
+      if ($has_own.call(ancestor.$$cvars, name)) {
+        ancestor.$$cvars[name] = value;
+        return value;
+      }
+    }
+
+    module.$$cvars[name] = value;
+
+    return value;
+  };
+
+  // Gets class variable with specified +name+ from provided +module+
+  //
+  // @param module [Module]
+  // @param name [String]
+  Opal.class_variable_get = function(module, name, tolerant) {
+    if ($has_own.call(module.$$cvars, name))
+      return module.$$cvars[name];
+
+    var ancestors = Opal.ancestors(module),
+      i, length = ancestors.length;
+
+    for (i = 0; i < length; i++) {
+      var ancestor = ancestors[i];
+
+      if ($has_own.call(ancestor.$$cvars, name)) {
+        return ancestor.$$cvars[name];
+      }
+    }
+
+    if (!tolerant)
+      throw Opal.NameError.$new('uninitialized class variable '+name+' in '+module.$name());
+
+    return nil;
+  }
+
+  function isRoot(proto) {
+    return proto.hasOwnProperty('$$iclass') && proto.hasOwnProperty('$$root');
+  }
+
+  function own_included_modules(module) {
+    var result = [], mod, proto = Object.getPrototypeOf(module.$$prototype);
+
+    while (proto) {
+      if (proto.hasOwnProperty('$$class')) {
+        // superclass
+        break;
+      }
+      mod = protoToModule(proto);
+      if (mod) {
+        result.push(mod);
+      }
+      proto = Object.getPrototypeOf(proto);
+    }
+
+    return result;
+  }
+
+  function own_prepended_modules(module) {
+    var result = [], mod, proto = Object.getPrototypeOf(module.$$prototype);
+
+    if (module.$$prototype.hasOwnProperty('$$dummy')) {
+      while (proto) {
+        if (proto === module.$$prototype.$$define_methods_on) {
+          break;
+        }
+
+        mod = protoToModule(proto);
+        if (mod) {
+          result.push(mod);
+        }
+
+        proto = Object.getPrototypeOf(proto);
+      }
+    }
+
+    return result;
+  }
+
+
+  // The actual inclusion of a module into a class.
+  //
+  // ## Class `$$parent` and `iclass`
+  //
+  // To handle `super` calls, every class has a `$$parent`. This parent is
+  // used to resolve the next class for a super call. A normal class would
+  // have this point to its superclass. However, if a class includes a module
+  // then this would need to take into account the module. The module would
+  // also have to then point its `$$parent` to the actual superclass. We
+  // cannot modify modules like this, because it might be included in more
+  // then one class. To fix this, we actually insert an `iclass` as the class'
+  // `$$parent` which can then point to the superclass. The `iclass` acts as
+  // a proxy to the actual module, so the `super` chain can then search it for
+  // the required method.
+  //
+  // @param module [Module] the module to include
+  // @param includer [Module] the target class to include module into
+  // @return [null]
+  Opal.append_features = function(module, includer) {
+    var module_ancestors = Opal.ancestors(module);
+    var iclasses = [];
+
+    if (module_ancestors.indexOf(includer) !== -1) {
+      throw Opal.ArgumentError.$new('cyclic include detected');
+    }
+
+    for (var i = 0, length = module_ancestors.length; i < length; i++) {
+      var ancestor = module_ancestors[i], iclass = create_iclass(ancestor);
+      $prop(iclass, '$$included', true);
+      iclasses.push(iclass);
+    }
+    var includer_ancestors = Opal.ancestors(includer),
+        chain = chain_iclasses(iclasses),
+        start_chain_after,
+        end_chain_on;
+
+    if (includer_ancestors.indexOf(module) === -1) {
+      // first time include
+
+      // includer -> chain.first -> ...chain... -> chain.last -> includer.parent
+      start_chain_after = includer.$$prototype;
+      end_chain_on = Object.getPrototypeOf(includer.$$prototype);
+    } else {
+      // The module has been already included,
+      // we don't need to put it into the ancestors chain again,
+      // but this module may have new included modules.
+      // If it's true we need to copy them.
+      //
+      // The simplest way is to replace ancestors chain from
+      //          parent
+      //            |
+      //   `module` iclass (has a $$root flag)
+      //            |
+      //   ...previos chain of module.included_modules ...
+      //            |
+      //  "next ancestor" (has a $$root flag or is a real class)
+      //
+      // to
+      //          parent
+      //            |
+      //    `module` iclass (has a $$root flag)
+      //            |
+      //   ...regenerated chain of module.included_modules
+      //            |
+      //   "next ancestor" (has a $$root flag or is a real class)
+      //
+      // because there are no intermediate classes between `parent` and `next ancestor`.
+      // It doesn't break any prototypes of other objects as we don't change class references.
+
+      var parent = includer.$$prototype, module_iclass = Object.getPrototypeOf(parent);
+
+      while (module_iclass != null) {
+        if (module_iclass.$$module === module && isRoot(module_iclass)) {
+          break;
+        }
+
+        parent = module_iclass;
+        module_iclass = Object.getPrototypeOf(module_iclass);
+      }
+
+      if (module_iclass) {
+        // module has been directly included
+        var next_ancestor = Object.getPrototypeOf(module_iclass);
+
+        // skip non-root iclasses (that were recursively included)
+        while (next_ancestor.hasOwnProperty('$$iclass') && !isRoot(next_ancestor)) {
+          next_ancestor = Object.getPrototypeOf(next_ancestor);
+        }
+
+        start_chain_after = parent;
+        end_chain_on = next_ancestor;
+      } else {
+        // module has not been directly included but was in ancestor chain because it was included by another module
+        // include it directly
+        start_chain_after = includer.$$prototype;
+        end_chain_on = Object.getPrototypeOf(includer.$$prototype);
+      }
+    }
+
+    $set_proto(start_chain_after, chain.first);
+    $set_proto(chain.last, end_chain_on);
+
+    // recalculate own_included_modules cache
+    includer.$$own_included_modules = own_included_modules(includer);
+
+    Opal.const_cache_version++;
+  };
+
+  Opal.prepend_features = function(module, prepender) {
+    // Here we change the ancestors chain from
+    //
+    //   prepender
+    //      |
+    //    parent
+    //
+    // to:
+    //
+    // dummy(prepender)
+    //      |
+    //  iclass(module)
+    //      |
+    // iclass(prepender)
+    //      |
+    //    parent
+    var module_ancestors = Opal.ancestors(module);
+    var iclasses = [];
+
+    if (module_ancestors.indexOf(prepender) !== -1) {
+      throw Opal.ArgumentError.$new('cyclic prepend detected');
+    }
+
+    for (var i = 0, length = module_ancestors.length; i < length; i++) {
+      var ancestor = module_ancestors[i], iclass = create_iclass(ancestor);
+      $prop(iclass, '$$prepended', true);
+      iclasses.push(iclass);
+    }
+
+    var chain = chain_iclasses(iclasses),
+        dummy_prepender = prepender.$$prototype,
+        previous_parent = Object.getPrototypeOf(dummy_prepender),
+        prepender_iclass,
+        start_chain_after,
+        end_chain_on;
+
+    if (dummy_prepender.hasOwnProperty('$$dummy')) {
+      // The module already has some prepended modules
+      // which means that we don't need to make it "dummy"
+      prepender_iclass = dummy_prepender.$$define_methods_on;
+    } else {
+      // Making the module "dummy"
+      prepender_iclass = create_dummy_iclass(prepender);
+      flush_methods_in(prepender);
+      $prop(dummy_prepender, '$$dummy', true);
+      $prop(dummy_prepender, '$$define_methods_on', prepender_iclass);
+
+      // Converting
+      //   dummy(prepender) -> previous_parent
+      // to
+      //   dummy(prepender) -> iclass(prepender) -> previous_parent
+      $set_proto(dummy_prepender, prepender_iclass);
+      $set_proto(prepender_iclass, previous_parent);
+    }
+
+    var prepender_ancestors = Opal.ancestors(prepender);
+
+    if (prepender_ancestors.indexOf(module) === -1) {
+      // first time prepend
+
+      start_chain_after = dummy_prepender;
+
+      // next $$root or prepender_iclass or non-$$iclass
+      end_chain_on = Object.getPrototypeOf(dummy_prepender);
+      while (end_chain_on != null) {
+        if (
+          end_chain_on.hasOwnProperty('$$root') ||
+          end_chain_on === prepender_iclass ||
+          !end_chain_on.hasOwnProperty('$$iclass')
+        ) {
+          break;
+        }
+
+        end_chain_on = Object.getPrototypeOf(end_chain_on);
+      }
+    } else {
+      throw Opal.RuntimeError.$new("Prepending a module multiple times is not supported");
+    }
+
+    $set_proto(start_chain_after, chain.first);
+    $set_proto(chain.last, end_chain_on);
+
+    // recalculate own_prepended_modules cache
+    prepender.$$own_prepended_modules = own_prepended_modules(prepender);
+
+    Opal.const_cache_version++;
+  };
+
+  function flush_methods_in(module) {
+    var proto = module.$$prototype,
+        props = Object.getOwnPropertyNames(proto);
+
+    for (var i = 0; i < props.length; i++) {
+      var prop = props[i];
+      if (Opal.is_method(prop)) {
+        delete proto[prop];
+      }
+    }
+  }
+
+  function create_iclass(module) {
+    var iclass = create_dummy_iclass(module);
+
+    if (module.$$is_module) {
+      module.$$iclasses.push(iclass);
+    }
+
+    return iclass;
+  }
+
+  // Dummy iclass doesn't receive updates when the module gets a new method.
+  function create_dummy_iclass(module) {
+    var iclass = {},
+        proto = module.$$prototype;
+
+    if (proto.hasOwnProperty('$$dummy')) {
+      proto = proto.$$define_methods_on;
+    }
+
+    var props = Object.getOwnPropertyNames(proto),
+        length = props.length, i;
+
+    for (i = 0; i < length; i++) {
+      var prop = props[i];
+      $prop(iclass, prop, proto[prop]);
+    }
+
+    $prop(iclass, '$$iclass', true);
+    $prop(iclass, '$$module', module);
+
+    return iclass;
+  }
+
+  function chain_iclasses(iclasses) {
+    var length = iclasses.length, first = iclasses[0];
+
+    $prop(first, '$$root', true);
+
+    if (length === 1) {
+      return { first: first, last: first };
+    }
+
+    var previous = first;
+
+    for (var i = 1; i < length; i++) {
+      var current = iclasses[i];
+      $set_proto(previous, current);
+      previous = current;
+    }
+
+
+    return { first: iclasses[0], last: iclasses[length - 1] };
+  }
+
+  // For performance, some core Ruby classes are toll-free bridged to their
+  // native JavaScript counterparts (e.g. a Ruby Array is a JavaScript Array).
+  //
+  // This method is used to setup a native constructor (e.g. Array), to have
+  // its prototype act like a normal Ruby class. Firstly, a new Ruby class is
+  // created using the native constructor so that its prototype is set as the
+  // target for the new class. Note: all bridged classes are set to inherit
+  // from Object.
+  //
+  // Example:
+  //
+  //    Opal.bridge(self, Function);
+  //
+  // @param klass       [Class] the Ruby class to bridge
+  // @param constructor [JS.Function] native JavaScript constructor to use
+  // @return [Class] returns the passed Ruby class
+  //
+  Opal.bridge = function(native_klass, klass) {
+    if (native_klass.hasOwnProperty('$$bridge')) {
+      throw Opal.ArgumentError.$new("already bridged");
+    }
+
+    // constructor is a JS function with a prototype chain like:
+    // - constructor
+    //   - super
+    //
+    // What we need to do is to inject our class (with its prototype chain)
+    // between constructor and super. For example, after injecting ::Object
+    // into JS String we get:
+    //
+    // - constructor (window.String)
+    //   - Opal.Object
+    //     - Opal.Kernel
+    //       - Opal.BasicObject
+    //         - super (window.Object)
+    //           - null
+    //
+    $prop(native_klass, '$$bridge', klass);
+    $set_proto(native_klass.prototype, (klass.$$super || Opal.Object).$$prototype);
+    $prop(klass, '$$prototype', native_klass.prototype);
+
+    $prop(klass.$$prototype, '$$class', klass);
+    $prop(klass, '$$constructor', native_klass);
+    $prop(klass, '$$bridge', true);
+  };
+
+  function protoToModule(proto) {
+    if (proto.hasOwnProperty('$$dummy')) {
+      return;
+    } else if (proto.hasOwnProperty('$$iclass')) {
+      return proto.$$module;
+    } else if (proto.hasOwnProperty('$$class')) {
+      return proto.$$class;
+    }
+  }
+
+  function own_ancestors(module) {
+    return module.$$own_prepended_modules.concat([module]).concat(module.$$own_included_modules);
+  }
+
+  // The Array of ancestors for a given module/class
+  Opal.ancestors = function(module) {
+    if (!module) { return []; }
+
+    if (module.$$ancestors_cache_version === Opal.const_cache_version) {
+      return module.$$ancestors;
+    }
+
+    var result = [], i, mods, length;
+
+    for (i = 0, mods = own_ancestors(module), length = mods.length; i < length; i++) {
+      result.push(mods[i]);
+    }
+
+    if (module.$$super) {
+      for (i = 0, mods = Opal.ancestors(module.$$super), length = mods.length; i < length; i++) {
+        result.push(mods[i]);
+      }
+    }
+
+    module.$$ancestors_cache_version = Opal.const_cache_version;
+    module.$$ancestors = result;
+
+    return result;
+  };
+
+  Opal.included_modules = function(module) {
+    var result = [], mod = null, proto = Object.getPrototypeOf(module.$$prototype);
+
+    for (; proto && Object.getPrototypeOf(proto); proto = Object.getPrototypeOf(proto)) {
+      mod = protoToModule(proto);
+      if (mod && mod.$$is_module && proto.$$iclass && proto.$$included) {
+        result.push(mod);
+      }
+    }
+
+    return result;
+  };
+
+
+  // Method Missing
+  // --------------
+
+  // Methods stubs are used to facilitate method_missing in opal. A stub is a
+  // placeholder function which just calls `method_missing` on the receiver.
+  // If no method with the given name is actually defined on an object, then it
+  // is obvious to say that the stub will be called instead, and then in turn
+  // method_missing will be called.
+  //
+  // When a file in ruby gets compiled to javascript, it includes a call to
+  // this function which adds stubs for every method name in the compiled file.
+  // It should then be safe to assume that method_missing will work for any
+  // method call detected.
+  //
+  // Method stubs are added to the BasicObject prototype, which every other
+  // ruby object inherits, so all objects should handle method missing. A stub
+  // is only added if the given property name (method name) is not already
+  // defined.
+  //
+  // Note: all ruby methods have a `$` prefix in javascript, so all stubs will
+  // have this prefix as well (to make this method more performant).
+  //
+  //    Opal.add_stubs("foo,bar,baz=");
+  //
+  // All stub functions will have a private `$$stub` property set to true so
+  // that other internal methods can detect if a method is just a stub or not.
+  // `Kernel#respond_to?` uses this property to detect a methods presence.
+  //
+  // @param stubs [Array] an array of method stubs to add
+  // @return [undefined]
+  Opal.add_stubs = function(stubs) {
+    var proto = Opal.BasicObject.$$prototype;
+    var stub, existing_method;
+    stubs = stubs.split(',');
+
+    for (var i = 0, length = stubs.length; i < length; i++) {
+      stub = '$'+stubs[i], existing_method = proto[stub];
+
+      if (existing_method == null || existing_method.$$stub) {
+        Opal.add_stub_for(proto, stub);
+      }
+    }
+  };
+
+  // Add a method_missing stub function to the given prototype for the
+  // given name.
+  //
+  // @param prototype [Prototype] the target prototype
+  // @param stub [String] stub name to add (e.g. "$foo")
+  // @return [undefined]
+  Opal.add_stub_for = function(prototype, stub) {
+    // Opal.stub_for(stub) is the method_missing_stub
+    $prop(prototype, stub, Opal.stub_for(stub));
+  };
+
+  // Generate the method_missing stub for a given method name.
+  //
+  // @param method_name [String] The js-name of the method to stub (e.g. "$foo")
+  // @return [undefined]
+  Opal.stub_for = function(method_name) {
+
+    function method_missing_stub() {
+      // Copy any given block onto the method_missing dispatcher
+      this.$method_missing.$$p = method_missing_stub.$$p;
+
+      // Set block property to null ready for the next call (stop false-positives)
+      delete method_missing_stub.$$p;
+
+      // call method missing with correct args (remove '$' prefix on method name)
+      var args_ary = new Array(arguments.length);
+      for(var i = 0, l = args_ary.length; i < l; i++) { args_ary[i] = arguments[i]; }
+
+      return this.$method_missing.apply(this, [method_name.slice(1)].concat(args_ary));
+    }
+
+    method_missing_stub.$$stub = true;
+
+    return method_missing_stub;
+  };
+
+
+  // Methods
+  // -------
+
+  // Arity count error dispatcher for methods
+  //
+  // @param actual [Fixnum] number of arguments given to method
+  // @param expected [Fixnum] expected number of arguments
+  // @param object [Object] owner of the method +meth+
+  // @param meth [String] method name that got wrong number of arguments
+  // @raise [ArgumentError]
+  Opal.ac = function(actual, expected, object, meth) {
+    var inspect = '';
+    if (object.$$is_a_module) {
+      inspect += object.$$name + '.';
+    }
+    else {
+      inspect += object.$$class.$$name + '#';
+    }
+    inspect += meth;
+
+    throw Opal.ArgumentError.$new('[' + inspect + '] wrong number of arguments (given ' + actual + ', expected ' + expected + ')');
+  };
+
+  // Arity count error dispatcher for blocks
+  //
+  // @param actual [Fixnum] number of arguments given to block
+  // @param expected [Fixnum] expected number of arguments
+  // @param context [Object] context of the block definition
+  // @raise [ArgumentError]
+  Opal.block_ac = function(actual, expected, context) {
+    var inspect = "`block in " + context + "'";
+
+    throw Opal.ArgumentError.$new(inspect + ': wrong number of arguments (given ' + actual + ', expected ' + expected + ')');
+  };
+
+  // Super dispatcher
+  Opal.find_super = function(obj, mid, current_func, defcheck, allow_stubs) {
+    var jsid = '$' + mid, ancestors, super_method;
+
+    if (obj.hasOwnProperty('$$meta')) {
+      ancestors = Opal.ancestors(obj.$$meta);
+    } else {
+      ancestors = Opal.ancestors(obj.$$class);
+    }
+
+    var current_index = ancestors.indexOf(current_func.$$owner);
+
+    for (var i = current_index + 1; i < ancestors.length; i++) {
+      var ancestor = ancestors[i],
+          proto = ancestor.$$prototype;
+
+      if (proto.hasOwnProperty('$$dummy')) {
+        proto = proto.$$define_methods_on;
+      }
+
+      if (proto.hasOwnProperty(jsid)) {
+        super_method = proto[jsid];
+        break;
+      }
+    }
+
+    if (!defcheck && super_method && super_method.$$stub && obj.$method_missing.$$pristine) {
+      // method_missing hasn't been explicitly defined
+      throw Opal.NoMethodError.$new('super: no superclass method `'+mid+"' for "+obj, mid);
+    }
+
+    return (super_method.$$stub && !allow_stubs) ? null : super_method;
+  };
+
+  // Iter dispatcher for super in a block
+  Opal.find_block_super = function(obj, jsid, current_func, defcheck, implicit) {
+    var call_jsid = jsid;
+
+    if (!current_func) {
+      throw Opal.RuntimeError.$new("super called outside of method");
+    }
+
+    if (implicit && current_func.$$define_meth) {
+      throw Opal.RuntimeError.$new("implicit argument passing of super from method defined by define_method() is not supported. Specify all arguments explicitly");
+    }
+
+    if (current_func.$$def) {
+      call_jsid = current_func.$$jsid;
+    }
+
+    return Opal.find_super(obj, call_jsid, current_func, defcheck);
+  };
+
+  // @deprecated
+  Opal.find_super_dispatcher = Opal.find_super;
+
+  // @deprecated
+  Opal.find_iter_super_dispatcher = Opal.find_block_super;
+
+  // Used to return as an expression. Sometimes, we can't simply return from
+  // a javascript function as if we were a method, as the return is used as
+  // an expression, or even inside a block which must "return" to the outer
+  // method. This helper simply throws an error which is then caught by the
+  // method. This approach is expensive, so it is only used when absolutely
+  // needed.
+  //
+  Opal.ret = function(val) {
+    Opal.returner.$v = val;
+    throw Opal.returner;
+  };
+
+  // Used to break out of a block.
+  Opal.brk = function(val, breaker) {
+    breaker.$v = val;
+    throw breaker;
+  };
+
+  // Builds a new unique breaker, this is to avoid multiple nested breaks to get
+  // in the way of each other.
+  Opal.new_brk = function() {
+    return new Error('unexpected break');
+  };
+
+  // handles yield calls for 1 yielded arg
+  Opal.yield1 = function(block, arg) {
+    if (typeof(block) !== "function") {
+      throw Opal.LocalJumpError.$new("no block given");
+    }
+
+    var has_mlhs = block.$$has_top_level_mlhs_arg,
+        has_trailing_comma = block.$$has_trailing_comma_in_args;
+
+    if (block.length > 1 || ((has_mlhs || has_trailing_comma) && block.length === 1)) {
+      arg = Opal.to_ary(arg);
+    }
+
+    if ((block.length > 1 || (has_trailing_comma && block.length === 1)) && arg.$$is_array) {
+      return block.apply(null, arg);
+    }
+    else {
+      return block(arg);
+    }
+  };
+
+  // handles yield for > 1 yielded arg
+  Opal.yieldX = function(block, args) {
+    if (typeof(block) !== "function") {
+      throw Opal.LocalJumpError.$new("no block given");
+    }
+
+    if (block.length > 1 && args.length === 1) {
+      if (args[0].$$is_array) {
+        return block.apply(null, args[0]);
+      }
+    }
+
+    if (!args.$$is_array) {
+      var args_ary = new Array(args.length);
+      for(var i = 0, l = args_ary.length; i < l; i++) { args_ary[i] = args[i]; }
+
+      return block.apply(null, args_ary);
+    }
+
+    return block.apply(null, args);
+  };
+
+  // Finds the corresponding exception match in candidates.  Each candidate can
+  // be a value, or an array of values.  Returns null if not found.
+  Opal.rescue = function(exception, candidates) {
+    for (var i = 0; i < candidates.length; i++) {
+      var candidate = candidates[i];
+
+      if (candidate.$$is_array) {
+        var result = Opal.rescue(exception, candidate);
+
+        if (result) {
+          return result;
+        }
+      }
+      else if (candidate === Opal.JS.Error) {
+        return candidate;
+      }
+      else if (candidate['$==='](exception)) {
+        return candidate;
+      }
+    }
+
+    return null;
+  };
+
+  Opal.is_a = function(object, klass) {
+    if (klass != null && object.$$meta === klass || object.$$class === klass) {
+      return true;
+    }
+
+    if (object.$$is_number && klass.$$is_number_class) {
+      return (klass.$$is_integer_class) ? (object % 1) === 0 : true;
+    }
+
+    var ancestors = Opal.ancestors(object.$$is_class ? Opal.get_singleton_class(object) : (object.$$meta || object.$$class));
+
+    return ancestors.indexOf(klass) !== -1;
+  };
+
+  // Helpers for extracting kwsplats
+  // Used for: { **h }
+  Opal.to_hash = function(value) {
+    if (value.$$is_hash) {
+      return value;
+    }
+    else if (value['$respond_to?']('to_hash', true)) {
+      var hash = value.$to_hash();
+      if (hash.$$is_hash) {
+        return hash;
+      }
+      else {
+        throw Opal.TypeError.$new("Can't convert " + value.$$class +
+          " to Hash (" + value.$$class + "#to_hash gives " + hash.$$class + ")");
+      }
+    }
+    else {
+      throw Opal.TypeError.$new("no implicit conversion of " + value.$$class + " into Hash");
+    }
+  };
+
+  // Helpers for implementing multiple assignment
+  // Our code for extracting the values and assigning them only works if the
+  // return value is a JS array.
+  // So if we get an Array subclass, extract the wrapped JS array from it
+
+  // Used for: a, b = something (no splat)
+  Opal.to_ary = function(value) {
+    if (value.$$is_array) {
+      return value;
+    }
+    else if (value['$respond_to?']('to_ary', true)) {
+      var ary = value.$to_ary();
+      if (ary === nil) {
+        return [value];
+      }
+      else if (ary.$$is_array) {
+        return ary;
+      }
+      else {
+        throw Opal.TypeError.$new("Can't convert " + value.$$class +
+          " to Array (" + value.$$class + "#to_ary gives " + ary.$$class + ")");
+      }
+    }
+    else {
+      return [value];
+    }
+  };
+
+  // Used for: a, b = *something (with splat)
+  Opal.to_a = function(value) {
+    if (value.$$is_array) {
+      // A splatted array must be copied
+      return value.slice();
+    }
+    else if (value['$respond_to?']('to_a', true)) {
+      var ary = value.$to_a();
+      if (ary === nil) {
+        return [value];
+      }
+      else if (ary.$$is_array) {
+        return ary;
+      }
+      else {
+        throw Opal.TypeError.$new("Can't convert " + value.$$class +
+          " to Array (" + value.$$class + "#to_a gives " + ary.$$class + ")");
+      }
+    }
+    else {
+      return [value];
+    }
+  };
+
+  // Used for extracting keyword arguments from arguments passed to
+  // JS function. If provided +arguments+ list doesn't have a Hash
+  // as a last item, returns a blank Hash.
+  //
+  // @param parameters [Array]
+  // @return [Hash]
+  //
+  Opal.extract_kwargs = function(parameters) {
+    var kwargs = parameters[parameters.length - 1];
+    if (kwargs != null && Opal.respond_to(kwargs, '$to_hash', true)) {
+      $splice.call(parameters, parameters.length - 1);
+      return kwargs.$to_hash();
+    }
+    else {
+      return Opal.hash2([], {});
+    }
+  };
+
+  // Used to get a list of rest keyword arguments. Method takes the given
+  // keyword args, i.e. the hash literal passed to the method containing all
+  // keyword arguemnts passed to method, as well as the used args which are
+  // the names of required and optional arguments defined. This method then
+  // just returns all key/value pairs which have not been used, in a new
+  // hash literal.
+  //
+  // @param given_args [Hash] all kwargs given to method
+  // @param used_args [Object<String: true>] all keys used as named kwargs
+  // @return [Hash]
+  //
+  Opal.kwrestargs = function(given_args, used_args) {
+    var keys      = [],
+        map       = {},
+        key           ,
+        given_map = given_args.$$smap;
+
+    for (key in given_map) {
+      if (!used_args[key]) {
+        keys.push(key);
+        map[key] = given_map[key];
+      }
+    }
+
+    return Opal.hash2(keys, map);
+  };
+
+  function apply_blockopts(block, blockopts) {
+    if (typeof(blockopts) === 'number') {
+      block.$$arity = blockopts;
+    }
+    else if (typeof(blockopts) === 'object') {
+      Object.assign(block, blockopts);
+    }
+  }
+
+  // Calls passed method on a ruby object with arguments and block:
+  //
+  // Can take a method or a method name.
+  //
+  // 1. When method name gets passed it invokes it by its name
+  //    and calls 'method_missing' when object doesn't have this method.
+  //    Used internally by Opal to invoke method that takes a block or a splat.
+  // 2. When method (i.e. method body) gets passed, it doesn't trigger 'method_missing'
+  //    because it doesn't know the name of the actual method.
+  //    Used internally by Opal to invoke 'super'.
+  //
+  // @example
+  //   var my_array = [1, 2, 3, 4]
+  //   Opal.send(my_array, 'length')                    # => 4
+  //   Opal.send(my_array, my_array.$length)            # => 4
+  //
+  //   Opal.send(my_array, 'reverse!')                  # => [4, 3, 2, 1]
+  //   Opal.send(my_array, my_array['$reverse!']')      # => [4, 3, 2, 1]
+  //
+  // @param recv [Object] ruby object
+  // @param method [Function, String] method body or name of the method
+  // @param args [Array] arguments that will be passed to the method call
+  // @param block [Function] ruby block
+  // @param blockopts [Object, Number] optional properties to set on the block
+  // @return [Object] returning value of the method call
+  Opal.send = function(recv, method, args, block, blockopts) {
+    var body;
+
+    if (typeof(method) === 'function') {
+      body = method;
+      method = null;
+    } else if (typeof(method) === 'string') {
+      body = recv['$'+method];
+    } else {
+      throw Opal.NameError.$new("Passed method should be a string or a function");
+    }
+
+    return Opal.send2(recv, body, method, args, block, blockopts);
+  };
+
+  Opal.send2 = function(recv, body, method, args, block, blockopts) {
+    if (body == null && method != null && recv.$method_missing) {
+      body = recv.$method_missing;
+      args = [method].concat(args);
+    }
+
+    apply_blockopts(block, blockopts);
+
+    if (typeof block === 'function') body.$$p = block;
+    return body.apply(recv, args);
+  };
+
+  Opal.refined_send = function(refinement_groups, recv, method, args, block, blockopts) {
+    var i, j, k, ancestors, ancestor, refinements, refinement, refine_modules, refine_module, body;
+
+    if (recv.hasOwnProperty('$$meta')) {
+      ancestors = Opal.ancestors(recv.$$meta);
+    } else {
+      ancestors = Opal.ancestors(recv.$$class);
+    }
+
+    // For all ancestors that there are, starting from the closest to the furthest...
+    for (i = 0; i < ancestors.length; i++) {
+      ancestor = Opal.id(ancestors[i]);
+      // For all refinement groups there are, starting from the closest scope to the furthest...
+      for (j = 0; j < refinement_groups.length; j++) {
+        refinements = refinement_groups[j];
+        // For all refinements there are, starting from the last `using` call to the furthest...
+        for (k = refinements.length - 1; k >= 0; k--) {
+          refinement = refinements[k];
+          if (typeof refinement.$$refine_modules === 'undefined') continue;
+          // A single module being given as an argument of the `using` call contains multiple
+          // refinement modules
+          refine_modules = refinement.$$refine_modules;
+          // Does this module refine a given call for a given ancestor module?
+          if (typeof refine_modules[ancestor] !== 'undefined') {
+            refine_module = refine_modules[ancestor];
+            // Does this module define a method we want to call?
+            if (typeof refine_module.$$prototype['$'+method] !== 'undefined') {
+              body = refine_module.$$prototype['$'+method];
+              return Opal.send2(recv, body, method, args, block, blockopts);
+            }
+          }
+        }
+      }
+    }
+
+    return Opal.send(recv, method, args, block, blockopts);
+  };
+
+  Opal.lambda = function(block, blockopts) {
+    block.$$is_lambda = true;
+
+    apply_blockopts(block, blockopts);
+
+    return block;
+  };
+
+  // Used to define methods on an object. This is a helper method, used by the
+  // compiled source to define methods on special case objects when the compiler
+  // can not determine the destination object, or the object is a Module
+  // instance. This can get called by `Module#define_method` as well.
+  //
+  // ## Modules
+  //
+  // Any method defined on a module will come through this runtime helper.
+  // The method is added to the module body, and the owner of the method is
+  // set to be the module itself. This is used later when choosing which
+  // method should show on a class if more than 1 included modules define
+  // the same method. Finally, if the module is in `module_function` mode,
+  // then the method is also defined onto the module itself.
+  //
+  // ## Classes
+  //
+  // This helper will only be called for classes when a method is being
+  // defined indirectly; either through `Module#define_method`, or by a
+  // literal `def` method inside an `instance_eval` or `class_eval` body. In
+  // either case, the method is simply added to the class' prototype. A special
+  // exception exists for `BasicObject` and `Object`. These two classes are
+  // special because they are used in toll-free bridged classes. In each of
+  // these two cases, extra work is required to define the methods on toll-free
+  // bridged class' prototypes as well.
+  //
+  // ## Objects
+  //
+  // If a simple ruby object is the object, then the method is simply just
+  // defined on the object as a singleton method. This would be the case when
+  // a method is defined inside an `instance_eval` block.
+  //
+  // @param obj  [Object, Class] the actual obj to define method for
+  // @param jsid [String] the JavaScript friendly method name (e.g. '$foo')
+  // @param body [JS.Function] the literal JavaScript function used as method
+  // @param blockopts [Object, Number] optional properties to set on the body
+  // @return [null]
+  //
+  Opal.def = function(obj, jsid, body, blockopts) {
+    apply_blockopts(body, blockopts);
+
+    // Special case for a method definition in the
+    // top-level namespace
+    if (obj === Opal.top) {
+      return Opal.defn(Opal.Object, jsid, body);
+    }
+    // if instance_eval is invoked on a module/class, it sets inst_eval_mod
+    else if (!obj.$$eval && obj.$$is_a_module) {
+      return Opal.defn(obj, jsid, body);
+    }
+    else {
+      return Opal.defs(obj, jsid, body);
+    }
+  };
+
+  // Define method on a module or class (see Opal.def).
+  Opal.defn = function(module, jsid, body) {
+    body.displayName = jsid;
+    body.$$owner = module;
+
+    var name = jsid.substr(1);
+
+    var proto = module.$$prototype;
+    if (proto.hasOwnProperty('$$dummy')) {
+      proto = proto.$$define_methods_on;
+    }
+    $prop(proto, jsid, body);
+
+    if (module.$$is_module) {
+      if (module.$$module_function) {
+        Opal.defs(module, jsid, body)
+      }
+
+      for (var i = 0, iclasses = module.$$iclasses, length = iclasses.length; i < length; i++) {
+        var iclass = iclasses[i];
+        $prop(iclass, jsid, body);
+      }
+    }
+
+    var singleton_of = module.$$singleton_of;
+    if (module.$method_added && !module.$method_added.$$stub && !singleton_of) {
+      module.$method_added(name);
+    }
+    else if (singleton_of && singleton_of.$singleton_method_added && !singleton_of.$singleton_method_added.$$stub) {
+      singleton_of.$singleton_method_added(name);
+    }
+
+    return name;
+  };
+
+  // Define a singleton method on the given object (see Opal.def).
+  Opal.defs = function(obj, jsid, body, blockopts) {
+    apply_blockopts(body, blockopts);
+
+    if (obj.$$is_string || obj.$$is_number) {
+      throw Opal.TypeError.$new("can't define singleton");
+    }
+    return Opal.defn(Opal.get_singleton_class(obj), jsid, body);
+  };
+
+  // Called from #remove_method.
+  Opal.rdef = function(obj, jsid) {
+    if (!$has_own.call(obj.$$prototype, jsid)) {
+      throw Opal.NameError.$new("method '" + jsid.substr(1) + "' not defined in " + obj.$name());
+    }
+
+    delete obj.$$prototype[jsid];
+
+    if (obj.$$is_singleton) {
+      if (obj.$$prototype.$singleton_method_removed && !obj.$$prototype.$singleton_method_removed.$$stub) {
+        obj.$$prototype.$singleton_method_removed(jsid.substr(1));
+      }
+    }
+    else {
+      if (obj.$method_removed && !obj.$method_removed.$$stub) {
+        obj.$method_removed(jsid.substr(1));
+      }
+    }
+  };
+
+  // Called from #undef_method.
+  Opal.udef = function(obj, jsid) {
+    if (!obj.$$prototype[jsid] || obj.$$prototype[jsid].$$stub) {
+      throw Opal.NameError.$new("method '" + jsid.substr(1) + "' not defined in " + obj.$name());
+    }
+
+    Opal.add_stub_for(obj.$$prototype, jsid);
+
+    if (obj.$$is_singleton) {
+      if (obj.$$prototype.$singleton_method_undefined && !obj.$$prototype.$singleton_method_undefined.$$stub) {
+        obj.$$prototype.$singleton_method_undefined(jsid.substr(1));
+      }
+    }
+    else {
+      if (obj.$method_undefined && !obj.$method_undefined.$$stub) {
+        obj.$method_undefined(jsid.substr(1));
+      }
+    }
+  };
+
+  function is_method_body(body) {
+    return (typeof(body) === "function" && !body.$$stub);
+  }
+
+  Opal.alias = function(obj, name, old) {
+    var id     = '$' + name,
+        old_id = '$' + old,
+        body,
+        alias;
+
+    // Aliasing on main means aliasing on Object...
+    if (typeof obj.$$prototype === 'undefined') {
+      obj = Opal.Object;
+    }
+
+    body = obj.$$prototype['$' + old];
+
+    // When running inside #instance_eval the alias refers to class methods.
+    if (obj.$$eval) {
+      return Opal.alias(Opal.get_singleton_class(obj), name, old);
+    }
+
+    if (!is_method_body(body)) {
+      var ancestor = obj.$$super;
+
+      while (typeof(body) !== "function" && ancestor) {
+        body     = ancestor[old_id];
+        ancestor = ancestor.$$super;
+      }
+
+      if (!is_method_body(body) && obj.$$is_module) {
+        // try to look into Object
+        body = Opal.Object.$$prototype[old_id]
+      }
+
+      if (!is_method_body(body)) {
+        throw Opal.NameError.$new("undefined method `" + old + "' for class `" + obj.$name() + "'")
+      }
+    }
+
+    // If the body is itself an alias use the original body
+    // to keep the max depth at 1.
+    if (body.$$alias_of) body = body.$$alias_of;
+
+    // We need a wrapper because otherwise properties
+    // would be overwritten on the original body.
+    alias = function() {
+      var block = alias.$$p, args, i, ii;
+
+      args = new Array(arguments.length);
+      for(i = 0, ii = arguments.length; i < ii; i++) {
+        args[i] = arguments[i];
+      }
+
+      delete alias.$$p;
+
+      return Opal.send(this, body, args, block);
+    };
+
+    // Assign the 'length' value with defineProperty because
+    // in strict mode the property is not writable.
+    // It doesn't work in older browsers (like Chrome 38), where
+    // an exception is thrown breaking Opal altogether.
+    try {
+      Object.defineProperty(alias, 'length', { value: body.length });
+    } catch (e) {}
+
+    // Try to make the browser pick the right name
+    alias.displayName       = name;
+
+    alias.$$arity           = body.$$arity;
+    alias.$$parameters      = body.$$parameters;
+    alias.$$source_location = body.$$source_location;
+    alias.$$alias_of        = body;
+    alias.$$alias_name      = name;
+
+    Opal.defn(obj, id, alias);
+
+    return obj;
+  };
+
+  Opal.alias_gvar = function(new_name, old_name) {
+    Object.defineProperty(Opal.gvars, new_name, {
+      configurable: true,
+      enumerable: true,
+      get: function() {
+        return Opal.gvars[old_name];
+      },
+      set: function(new_value) {
+        Opal.gvars[old_name] = new_value;
+      }
+    });
+    return nil;
+  }
+
+  Opal.alias_native = function(obj, name, native_name) {
+    var id   = '$' + name,
+        body = obj.$$prototype[native_name];
+
+    if (typeof(body) !== "function" || body.$$stub) {
+      throw Opal.NameError.$new("undefined native method `" + native_name + "' for class `" + obj.$name() + "'")
+    }
+
+    Opal.defn(obj, id, body);
+
+    return obj;
+  };
+
+
+  // Hashes
+  // ------
+
+  Opal.hash_init = function(hash) {
+    hash.$$smap = Object.create(null);
+    hash.$$map  = Object.create(null);
+    hash.$$keys = [];
+  };
+
+  Opal.hash_clone = function(from_hash, to_hash) {
+    to_hash.$$none = from_hash.$$none;
+    to_hash.$$proc = from_hash.$$proc;
+
+    for (var i = 0, keys = from_hash.$$keys, smap = from_hash.$$smap, len = keys.length, key, value; i < len; i++) {
+      key = keys[i];
+
+      if (key.$$is_string) {
+        value = smap[key];
+      } else {
+        value = key.value;
+        key = key.key;
+      }
+
+      Opal.hash_put(to_hash, key, value);
+    }
+  };
+
+  Opal.hash_put = function(hash, key, value) {
+    if (key.$$is_string) {
+      if (!$has_own.call(hash.$$smap, key)) {
+        hash.$$keys.push(key);
+      }
+      hash.$$smap[key] = value;
+      return;
+    }
+
+    var key_hash, bucket, last_bucket;
+    key_hash = hash.$$by_identity ? Opal.id(key) : key.$hash();
+
+    if (!$has_own.call(hash.$$map, key_hash)) {
+      bucket = {key: key, key_hash: key_hash, value: value};
+      hash.$$keys.push(bucket);
+      hash.$$map[key_hash] = bucket;
+      return;
+    }
+
+    bucket = hash.$$map[key_hash];
+
+    while (bucket) {
+      if (key === bucket.key || key['$eql?'](bucket.key)) {
+        last_bucket = undefined;
+        bucket.value = value;
+        break;
+      }
+      last_bucket = bucket;
+      bucket = bucket.next;
+    }
+
+    if (last_bucket) {
+      bucket = {key: key, key_hash: key_hash, value: value};
+      hash.$$keys.push(bucket);
+      last_bucket.next = bucket;
+    }
+  };
+
+  Opal.hash_get = function(hash, key) {
+    if (key.$$is_string) {
+      if ($has_own.call(hash.$$smap, key)) {
+        return hash.$$smap[key];
+      }
+      return;
+    }
+
+    var key_hash, bucket;
+    key_hash = hash.$$by_identity ? Opal.id(key) : key.$hash();
+
+    if ($has_own.call(hash.$$map, key_hash)) {
+      bucket = hash.$$map[key_hash];
+
+      while (bucket) {
+        if (key === bucket.key || key['$eql?'](bucket.key)) {
+          return bucket.value;
+        }
+        bucket = bucket.next;
+      }
+    }
+  };
+
+  Opal.hash_delete = function(hash, key) {
+    var i, keys = hash.$$keys, length = keys.length, value, key_tmp;
+
+    if (key.$$is_string) {
+      if (typeof key !== "string") key = key.valueOf();
+
+      if (!$has_own.call(hash.$$smap, key)) {
+        return;
+      }
+
+      for (i = 0; i < length; i++) {
+        key_tmp = keys[i];
+
+        if (key_tmp.$$is_string && typeof key_tmp !== "string") {
+          key_tmp = key_tmp.valueOf();
+        }
+
+        if (key_tmp === key) {
+          keys.splice(i, 1);
+          break;
+        }
+      }
+
+      value = hash.$$smap[key];
+      delete hash.$$smap[key];
+      return value;
+    }
+
+    var key_hash = key.$hash();
+
+    if (!$has_own.call(hash.$$map, key_hash)) {
+      return;
+    }
+
+    var bucket = hash.$$map[key_hash], last_bucket;
+
+    while (bucket) {
+      if (key === bucket.key || key['$eql?'](bucket.key)) {
+        value = bucket.value;
+
+        for (i = 0; i < length; i++) {
+          if (keys[i] === bucket) {
+            keys.splice(i, 1);
+            break;
+          }
+        }
+
+        if (last_bucket && bucket.next) {
+          last_bucket.next = bucket.next;
+        }
+        else if (last_bucket) {
+          delete last_bucket.next;
+        }
+        else if (bucket.next) {
+          hash.$$map[key_hash] = bucket.next;
+        }
+        else {
+          delete hash.$$map[key_hash];
+        }
+
+        return value;
+      }
+      last_bucket = bucket;
+      bucket = bucket.next;
+    }
+  };
+
+  Opal.hash_rehash = function(hash) {
+    for (var i = 0, length = hash.$$keys.length, key_hash, bucket, last_bucket; i < length; i++) {
+
+      if (hash.$$keys[i].$$is_string) {
+        continue;
+      }
+
+      key_hash = hash.$$keys[i].key.$hash();
+
+      if (key_hash === hash.$$keys[i].key_hash) {
+        continue;
+      }
+
+      bucket = hash.$$map[hash.$$keys[i].key_hash];
+      last_bucket = undefined;
+
+      while (bucket) {
+        if (bucket === hash.$$keys[i]) {
+          if (last_bucket && bucket.next) {
+            last_bucket.next = bucket.next;
+          }
+          else if (last_bucket) {
+            delete last_bucket.next;
+          }
+          else if (bucket.next) {
+            hash.$$map[hash.$$keys[i].key_hash] = bucket.next;
+          }
+          else {
+            delete hash.$$map[hash.$$keys[i].key_hash];
+          }
+          break;
+        }
+        last_bucket = bucket;
+        bucket = bucket.next;
+      }
+
+      hash.$$keys[i].key_hash = key_hash;
+
+      if (!$has_own.call(hash.$$map, key_hash)) {
+        hash.$$map[key_hash] = hash.$$keys[i];
+        continue;
+      }
+
+      bucket = hash.$$map[key_hash];
+      last_bucket = undefined;
+
+      while (bucket) {
+        if (bucket === hash.$$keys[i]) {
+          last_bucket = undefined;
+          break;
+        }
+        last_bucket = bucket;
+        bucket = bucket.next;
+      }
+
+      if (last_bucket) {
+        last_bucket.next = hash.$$keys[i];
+      }
+    }
+  };
+
+  Opal.hash = function() {
+    var arguments_length = arguments.length, args, hash, i, length, key, value;
+
+    if (arguments_length === 1 && arguments[0].$$is_hash) {
+      return arguments[0];
+    }
+
+    hash = new Opal.Hash();
+    Opal.hash_init(hash);
+
+    if (arguments_length === 1 && arguments[0].$$is_array) {
+      args = arguments[0];
+      length = args.length;
+
+      for (i = 0; i < length; i++) {
+        if (args[i].length !== 2) {
+          throw Opal.ArgumentError.$new("value not of length 2: " + args[i].$inspect());
+        }
+
+        key = args[i][0];
+        value = args[i][1];
+
+        Opal.hash_put(hash, key, value);
+      }
+
+      return hash;
+    }
+
+    if (arguments_length === 1) {
+      args = arguments[0];
+      for (key in args) {
+        if ($has_own.call(args, key)) {
+          value = args[key];
+
+          Opal.hash_put(hash, key, value);
+        }
+      }
+
+      return hash;
+    }
+
+    if (arguments_length % 2 !== 0) {
+      throw Opal.ArgumentError.$new("odd number of arguments for Hash");
+    }
+
+    for (i = 0; i < arguments_length; i += 2) {
+      key = arguments[i];
+      value = arguments[i + 1];
+
+      Opal.hash_put(hash, key, value);
+    }
+
+    return hash;
+  };
+
+  // A faster Hash creator for hashes that just use symbols and
+  // strings as keys. The map and keys array can be constructed at
+  // compile time, so they are just added here by the constructor
+  // function.
+  //
+  Opal.hash2 = function(keys, smap) {
+    var hash = new Opal.Hash();
+
+    hash.$$smap = smap;
+    hash.$$map  = Object.create(null);
+    hash.$$keys = keys;
+
+    return hash;
+  };
+
+  // Create a new range instance with first and last values, and whether the
+  // range excludes the last value.
+  //
+  Opal.range = function(first, last, exc) {
+    var range         = new Opal.Range();
+        range.begin   = first;
+        range.end     = last;
+        range.excl    = exc;
+
+    return range;
+  };
+
+  // Get the ivar name for a given name.
+  // Mostly adds a trailing $ to reserved names.
+  //
+  Opal.ivar = function(name) {
+    if (
+        // properties
+        name === "constructor" ||
+        name === "displayName" ||
+        name === "__count__" ||
+        name === "__noSuchMethod__" ||
+        name === "__parent__" ||
+        name === "__proto__" ||
+
+        // methods
+        name === "hasOwnProperty" ||
+        name === "valueOf"
+       )
+    {
+      return name + "$";
+    }
+
+    return name;
+  };
+
+
+  // Regexps
+  // -------
+
+  // Escape Regexp special chars letting the resulting string be used to build
+  // a new Regexp.
+  //
+  Opal.escape_regexp = function(str) {
+    return str.replace(/([-[\]\/{}()*+?.^$\\| ])/g, '\\$1')
+              .replace(/[\n]/g, '\\n')
+              .replace(/[\r]/g, '\\r')
+              .replace(/[\f]/g, '\\f')
+              .replace(/[\t]/g, '\\t');
+  };
+
+  // Create a global Regexp from a RegExp object and cache the result
+  // on the object itself ($$g attribute).
+  //
+  Opal.global_regexp = function(pattern) {
+    if (pattern.global) {
+      return pattern; // RegExp already has the global flag
+    }
+    if (pattern.$$g == null) {
+      pattern.$$g = new RegExp(pattern.source, (pattern.multiline ? 'gm' : 'g') + (pattern.ignoreCase ? 'i' : ''));
+    } else {
+      pattern.$$g.lastIndex = null; // reset lastIndex property
+    }
+    return pattern.$$g;
+  };
+
+  // Create a global multiline Regexp from a RegExp object and cache the result
+  // on the object itself ($$gm or $$g attribute).
+  //
+  Opal.global_multiline_regexp = function(pattern) {
+    var result;
+    if (pattern.multiline) {
+      if (pattern.global) {
+        return pattern; // RegExp already has the global and multiline flag
+      }
+      // we are using the $$g attribute because the Regexp is already multiline
+      if (pattern.$$g != null) {
+        result = pattern.$$g;
+      } else {
+        result = pattern.$$g = new RegExp(pattern.source, 'gm' + (pattern.ignoreCase ? 'i' : ''));
+      }
+    } else if (pattern.$$gm != null) {
+      result = pattern.$$gm;
+    } else {
+      result = pattern.$$gm = new RegExp(pattern.source, 'gm' + (pattern.ignoreCase ? 'i' : ''));
+    }
+    result.lastIndex = null; // reset lastIndex property
+    return result;
+  };
+
+  // Combine multiple regexp parts together
+  Opal.regexp = function(parts, flags) {
+    var part;
+    var ignoreCase = typeof flags !== 'undefined' && flags && flags.indexOf('i') >= 0;
+
+    for (var i = 0, ii = parts.length; i < ii; i++) {
+      part = parts[i];
+      if (part instanceof RegExp) {
+        if (part.ignoreCase !== ignoreCase)
+          Opal.Kernel.$warn(
+            "ignore case doesn't match for " + part.source.$inspect(),
+            Opal.hash({uplevel: 1})
+          )
+
+        part = part.source;
+      }
+      if (part === '') part = '(?:' + part + ')';
+      parts[i] = part;
+    }
+
+    if (flags) {
+      return new RegExp(parts.join(''), flags);
+    } else {
+      return new RegExp(parts.join(''));
+    }
+  };
+
+  // Require system
+  // --------------
+
+  Opal.modules         = {};
+  Opal.loaded_features = ['corelib/runtime'];
+  Opal.current_dir     = '.';
+  Opal.require_table   = {'corelib/runtime': true};
+
+  Opal.normalize = function(path) {
+    var parts, part, new_parts = [], SEPARATOR = '/';
+
+    if (Opal.current_dir !== '.') {
+      path = Opal.current_dir.replace(/\/*$/, '/') + path;
+    }
+
+    path = path.replace(/^\.\//, '');
+    path = path.replace(/\.(rb|opal|js)$/, '');
+    parts = path.split(SEPARATOR);
+
+    for (var i = 0, ii = parts.length; i < ii; i++) {
+      part = parts[i];
+      if (part === '') continue;
+      (part === '..') ? new_parts.pop() : new_parts.push(part)
+    }
+
+    return new_parts.join(SEPARATOR);
+  };
+
+  Opal.loaded = function(paths) {
+    var i, l, path;
+
+    for (i = 0, l = paths.length; i < l; i++) {
+      path = Opal.normalize(paths[i]);
+
+      if (Opal.require_table[path]) {
+        continue;
+      }
+
+      Opal.loaded_features.push(path);
+      Opal.require_table[path] = true;
+    }
+  };
+
+  Opal.load = function(path) {
+    path = Opal.normalize(path);
+
+    Opal.loaded([path]);
+
+    var module = Opal.modules[path];
+
+    if (module) {
+      var retval = module(Opal);
+      if (typeof Promise !== 'undefined' && retval instanceof Promise) {
+        // A special case of require having an async top:
+        // We will need to await it.
+        return retval.then(function() { return true; });
+      }
+    }
+    else {
+      var severity = Opal.config.missing_require_severity;
+      var message  = 'cannot load such file -- ' + path;
+
+      if (severity === "error") {
+        if (Opal.LoadError) {
+          throw Opal.LoadError.$new(message)
+        } else {
+          throw message
+        }
+      }
+      else if (severity === "warning") {
+        console.warn('WARNING: LoadError: ' + message);
+      }
+    }
+
+    return true;
+  };
+
+  Opal.require = function(path) {
+    path = Opal.normalize(path);
+
+    if (Opal.require_table[path]) {
+      return false;
+    }
+
+    return Opal.load(path);
+  };
+
+
+  // Strings
+  // -------
+
+  Opal.encodings = Object.create(null);
+
+  // Sets the encoding on a string, will treat string literals as frozen strings
+  // raising a FrozenError.
+  //
+  // @param str [String] the string on which the encoding should be set
+  // @param name [String] the canonical name of the encoding
+  // @param type [String] possible values are either `"encoding"`, `"internal_encoding"`, or `undefined
+  Opal.set_encoding = function(str, name, type) {
+    if (typeof type === "undefined") type = "encoding";
+    if (typeof str === 'string' || str.$$frozen === true)
+      throw Opal.FrozenError.$new("can't modify frozen String");
+
+    var encoding = Opal.find_encoding(name);
+
+    if (encoding === str[type]) { return str; }
+
+    str[type] = encoding;
+
+    return str;
+  };
+
+  // Fetches the encoding for the given name or raises ArgumentError.
+  Opal.find_encoding = function(name) {
+    var register = Opal.encodings;
+    var encoding = register[name] || register[name.toUpperCase()];
+    if (!encoding) throw Opal.ArgumentError.$new("unknown encoding name - " + name);
+    return encoding;
+  }
+
+  // @returns a String object with the encoding set from a string literal
+  Opal.enc = function(str, name) {
+    var dup = new String(str);
+    dup = Opal.set_encoding(dup, name);
+    dup.internal_encoding = dup.encoding;
+    return dup
+  }
+
+  // @returns a String object with the internal encoding set to Binary
+  Opal.binary = function(str) {
+    var dup = new String(str);
+    return Opal.set_encoding(dup, "binary", "internal_encoding");
+  }
+
+  Opal.last_promise = null;
+  Opal.promise_unhandled_exception = false;
+
+  // Run a block of code, but if it returns a Promise, don't run the next
+  // one, but queue it.
+  Opal.queue = function(proc) {
+    if (Opal.last_promise) {
+      // The async path is taken only if anything before returned a
+      // Promise(V2).
+      Opal.last_promise = Opal.last_promise.then(function() {
+        if (!Opal.promise_unhandled_exception) return proc(Opal);
+      })['catch'](function(error) {
+        if (Opal.respond_to(error, '$full_message')) {
+          error = error.$full_message();
+        }
+        console.error(error);
+        // Abort further execution
+        Opal.promise_unhandled_exception = true;
+        Opal.exit(1);
+      });
+      return Opal.last_promise;
+    }
+    else {
+      var ret = proc(Opal);
+      if (typeof Promise === 'function' && typeof ret === 'object' && ret instanceof Promise) {
+        Opal.last_promise = ret;
+      }
+      return ret;
+    }
+  }
+
+  // Operator helpers
+  // ----------------
+  Opal.rb_plus   = function(l,r) { return (typeof(l) === 'number' && typeof(r) === 'number') ? l + r : l['$+'](r); }
+  Opal.rb_minus  = function(l,r) { return (typeof(l) === 'number' && typeof(r) === 'number') ? l - r : l['$-'](r); }
+  Opal.rb_times  = function(l,r) { return (typeof(l) === 'number' && typeof(r) === 'number') ? l * r : l['$*'](r); }
+  Opal.rb_divide = function(l,r) { return (typeof(l) === 'number' && typeof(r) === 'number') ? l / r : l['$/'](r); }
+  Opal.rb_lt     = function(l,r) { return (typeof(l) === 'number' && typeof(r) === 'number') ? l < r : l['$<'](r); }
+  Opal.rb_gt     = function(l,r) { return (typeof(l) === 'number' && typeof(r) === 'number') ? l > r : l['$>'](r); }
+  Opal.rb_le     = function(l,r) { return (typeof(l) === 'number' && typeof(r) === 'number') ? l <= r : l['$<='](r); }
+  Opal.rb_ge     = function(l,r) { return (typeof(l) === 'number' && typeof(r) === 'number') ? l >= r : l['$>='](r); }
+
+  // Optimized helpers for calls like $truthy((a)['$==='](b)) -> $eqeqeq(a, b)
+  Opal.eqeq = function(lhs, rhs) {
+    if ((typeof lhs === 'number' && typeof rhs === 'number') ||
+        (typeof lhs === 'string' && typeof rhs === 'string')) {
+      return lhs === rhs;
+    }
+    return $truthy((lhs)['$=='](rhs));
+  };
+  Opal.eqeqeq = function(lhs, rhs) {
+    if ((typeof lhs === 'number' && typeof rhs === 'number') ||
+        (typeof lhs === 'string' && typeof rhs === 'string')) {
+      return lhs === rhs;
+    }
+    return $truthy((lhs)['$==='](rhs));
+  };
+  Opal.neqeq = function(lhs, rhs) {
+    if ((typeof lhs === 'number' && typeof rhs === 'number') ||
+        (typeof lhs === 'string' && typeof rhs === 'string')) {
+      return lhs !== rhs;
+    }
+    return $truthy((lhs)['$!='](rhs));
+  };
+  Opal.not = function(arg) {
+    if (true === arg) return false;
+    if (undefined === arg || null === arg || false === arg || nil === arg) return true;
+    return $truthy(arg['$!']());
+  }
+
+
+
+  // Initialization
+  // --------------
+  Opal.BasicObject = BasicObject = Opal.allocate_class('BasicObject', null);
+  Opal.Object      = _Object     = Opal.allocate_class('Object', Opal.BasicObject);
+  Opal.Module      = Module      = Opal.allocate_class('Module', Opal.Object);
+  Opal.Class       = Class       = Opal.allocate_class('Class', Opal.Module);
+  Opal.Opal        = _Opal       = Opal.allocate_module('Opal');
+  Opal.Kernel      = Kernel      = Opal.allocate_module('Kernel');
+
+  $set_proto(Opal.BasicObject, Opal.Class.$$prototype);
+  $set_proto(Opal.Object, Opal.Class.$$prototype);
+  $set_proto(Opal.Module, Opal.Class.$$prototype);
+  $set_proto(Opal.Class, Opal.Class.$$prototype);
+
+  // BasicObject can reach itself, avoid const_set to skip the $$base_module logic
+  BasicObject.$$const["BasicObject"] = BasicObject;
+
+  // Assign basic constants
+  $const_set(_Object, "BasicObject",  BasicObject);
+  $const_set(_Object, "Object",       _Object);
+  $const_set(_Object, "Module",       Module);
+  $const_set(_Object, "Class",        Class);
+  $const_set(_Object, "Opal",         _Opal);
+  $const_set(_Object, "Kernel",       Kernel);
+
+  // Fix booted classes to have correct .class value
+  BasicObject.$$class = Class;
+  _Object.$$class     = Class;
+  Module.$$class      = Class;
+  Class.$$class       = Class;
+  _Opal.$$class       = Module;
+  Kernel.$$class      = Module;
+
+  // Forward .toString() to #to_s
+  $prop(_Object.$$prototype, 'toString', function() {
+    var to_s = this.$to_s();
+    if (to_s.$$is_string && typeof(to_s) === 'object') {
+      // a string created using new String('string')
+      return to_s.valueOf();
+    } else {
+      return to_s;
+    }
+  });
+
+  // Make Kernel#require immediately available as it's needed to require all the
+  // other corelib files.
+  $prop(_Object.$$prototype, '$require', Opal.require);
+
+  // Instantiate the main object
+  Opal.top = new _Object();
+  Opal.top.$to_s = Opal.top.$inspect = function() { return 'main' };
+  Opal.top.$define_method = top_define_method;
+
+  // Foward calls to define_method on the top object to Object
+  function top_define_method() {
+    var args = Opal.slice.call(arguments);
+    var block = top_define_method.$$p;
+    delete top_define_method.$$p;
+    return Opal.send(_Object, 'define_method', args, block)
+  };
+
+  // Nil
+  Opal.NilClass = Opal.allocate_class('NilClass', Opal.Object);
+  $const_set(_Object, 'NilClass', Opal.NilClass);
+  nil = Opal.nil = new Opal.NilClass();
+  nil.$$id = nil_id;
+  nil.call = nil.apply = function() { throw Opal.LocalJumpError.$new('no block given'); };
+
+  // Errors
+  Opal.breaker  = new Error('unexpected break (old)');
+  Opal.returner = new Error('unexpected return');
+  TypeError.$$super = Error;
+}).call(this);
diff --git a/opal/corelib/string.rb b/opal/corelib/string.rb
new file mode 100644
index 00000000..a0d07c3e
--- /dev/null
+++ b/opal/corelib/string.rb
@@ -0,0 +1,1889 @@
+# helpers: coerce_to, respond_to, global_multiline_regexp
+
+require 'corelib/comparable'
+require 'corelib/regexp'
+
+class ::String < `String`
+  include ::Comparable
+
+  %x{
+    Opal.prop(#{self}.$$prototype, '$$is_string', true);
+
+    Opal.prop(#{self}.$$prototype, '$$cast', function(string) {
+      var klass = this.$$class;
+      if (klass.$$constructor === String) {
+        return string;
+      } else {
+        return new klass.$$constructor(string);
+      }
+    });
+  }
+
+  def __id__
+    `self.toString()`
+  end
+
+  def self.try_convert(what)
+    ::Opal.coerce_to?(what, ::String, :to_str)
+  end
+
+  def self.new(*args)
+    %x{
+      var str = args[0] || "";
+      var opts = args[args.length-1];
+      str = $coerce_to(str, #{::String}, 'to_str');
+      if (opts && opts.$$is_hash) {
+        if (opts.$$smap.encoding) str = str.$force_encoding(opts.$$smap.encoding);
+      }
+      str = new self.$$constructor(str);
+      if (!str.$initialize.$$pristine) #{`str`.initialize(*args)};
+      return str;
+    }
+  end
+
+  # Our initialize method does nothing, the string value setup is being
+  # done by String.new. Therefore not all kinds of subclassing will work.
+  # As a rule of thumb, when subclassing String, either make sure to override
+  # .new or make sure that the first argument given to a constructor is
+  # a string we want our subclass-string to hold.
+  def initialize(str = undefined, encoding: nil, capacity: nil)
+  end
+
+  def %(data)
+    if ::Array === data
+      format(self, *data)
+    else
+      format(self, data)
+    end
+  end
+
+  def *(count)
+    %x{
+      count = $coerce_to(count, #{::Integer}, 'to_int');
+
+      if (count < 0) {
+        #{::Kernel.raise ::ArgumentError, 'negative argument'}
+      }
+
+      if (count === 0) {
+        return self.$$cast('');
+      }
+
+      var result = '',
+          string = self.toString();
+
+      // All credit for the bit-twiddling magic code below goes to Mozilla
+      // polyfill implementation of String.prototype.repeat() posted here:
+      // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/repeat
+
+      if (string.length * count >= 1 << 28) {
+        #{::Kernel.raise ::RangeError, 'multiply count must not overflow maximum string size'}
+      }
+
+      for (;;) {
+        if ((count & 1) === 1) {
+          result += string;
+        }
+        count >>>= 1;
+        if (count === 0) {
+          break;
+        }
+        string += string;
+      }
+
+      return self.$$cast(result);
+    }
+  end
+
+  def +(other)
+    other = `$coerce_to(#{other}, #{::String}, 'to_str')`
+
+    %x{
+      if (other == "" && self.$$class === Opal.String) return #{self};
+      if (self == "" && other.$$class === Opal.String) return #{other};
+      var out = self + other;
+      if (self.encoding === out.encoding && other.encoding === out.encoding) return out;
+      if (self.encoding.name === "UTF-8" || other.encoding.name === "UTF-8") return out;
+      return Opal.enc(out, self.encoding);
+    }
+  end
+
+  def <=>(other)
+    if other.respond_to? :to_str
+      other = other.to_str.to_s
+
+      `self > other ? 1 : (self < other ? -1 : 0)`
+    else
+      %x{
+        var cmp = #{other <=> self};
+
+        if (cmp === nil) {
+          return nil;
+        }
+        else {
+          return cmp > 0 ? -1 : (cmp < 0 ? 1 : 0);
+        }
+      }
+    end
+  end
+
+  def ==(other)
+    %x{
+      if (other.$$is_string) {
+        return self.toString() === other.toString();
+      }
+      if ($respond_to(other, '$to_str')) {
+        return #{other == self};
+      }
+      return false;
+    }
+  end
+
+  def =~(other)
+    %x{
+      if (other.$$is_string) {
+        #{::Kernel.raise ::TypeError, 'type mismatch: String given'};
+      }
+
+      return #{other =~ self};
+    }
+  end
+
+  def [](index, length = undefined)
+    %x{
+      var size = self.length, exclude, range;
+
+      if (index.$$is_range) {
+        exclude = index.excl;
+        range   = index;
+        length  = index.end === nil ? -1 : $coerce_to(index.end, #{::Integer}, 'to_int');
+        index   = index.begin === nil ? 0 : $coerce_to(index.begin, #{::Integer}, 'to_int');
+
+        if (Math.abs(index) > size) {
+          return nil;
+        }
+
+        if (index < 0) {
+          index += size;
+        }
+
+        if (length < 0) {
+          length += size;
+        }
+
+        if (!exclude || range.end === nil) {
+          length += 1;
+        }
+
+        length = length - index;
+
+        if (length < 0) {
+          length = 0;
+        }
+
+        return self.$$cast(self.substr(index, length));
+      }
+
+
+      if (index.$$is_string) {
+        if (length != null) {
+          #{::Kernel.raise ::TypeError}
+        }
+        return self.indexOf(index) !== -1 ? self.$$cast(index) : nil;
+      }
+
+
+      if (index.$$is_regexp) {
+        var match = self.match(index);
+
+        if (match === null) {
+          #{$~ = nil}
+          return nil;
+        }
+
+        #{$~ = ::MatchData.new(`index`, `match`)}
+
+        if (length == null) {
+          return self.$$cast(match[0]);
+        }
+
+        length = $coerce_to(length, #{::Integer}, 'to_int');
+
+        if (length < 0 && -length < match.length) {
+          return self.$$cast(match[length += match.length]);
+        }
+
+        if (length >= 0 && length < match.length) {
+          return self.$$cast(match[length]);
+        }
+
+        return nil;
+      }
+
+
+      index = $coerce_to(index, #{::Integer}, 'to_int');
+
+      if (index < 0) {
+        index += size;
+      }
+
+      if (length == null) {
+        if (index >= size || index < 0) {
+          return nil;
+        }
+        return self.$$cast(self.substr(index, 1));
+      }
+
+      length = $coerce_to(length, #{::Integer}, 'to_int');
+
+      if (length < 0) {
+        return nil;
+      }
+
+      if (index > size || index < 0) {
+        return nil;
+      }
+
+      return self.$$cast(self.substr(index, length));
+    }
+  end
+
+  def b
+    `new String(#{self})`.force_encoding('binary')
+  end
+
+  def capitalize
+    `self.$$cast(self.charAt(0).toUpperCase() + self.substr(1).toLowerCase())`
+  end
+
+  def casecmp(other)
+    return nil unless other.respond_to?(:to_str)
+    other = `$coerce_to(other, #{::String}, 'to_str')`.to_s
+    %x{
+      var ascii_only = /^[\x00-\x7F]*$/;
+      if (ascii_only.test(self) && ascii_only.test(other)) {
+        self = self.toLowerCase();
+        other = other.toLowerCase();
+      }
+    }
+    self <=> other
+  end
+
+  def casecmp?(other)
+    %x{
+      var cmp = #{casecmp(other)};
+      if (cmp === nil) {
+        return nil;
+      } else {
+        return cmp === 0;
+      }
+    }
+  end
+
+  def center(width, padstr = ' ')
+    width  = `$coerce_to(#{width}, #{::Integer}, 'to_int')`
+    padstr = `$coerce_to(#{padstr}, #{::String}, 'to_str')`.to_s
+
+    if padstr.empty?
+      ::Kernel.raise ::ArgumentError, 'zero width padding'
+    end
+
+    return self if `width <= self.length`
+
+    %x{
+      var ljustified = #{ljust ((width + `self.length`) / 2).ceil, padstr},
+          rjustified = #{rjust ((width + `self.length`) / 2).floor, padstr};
+
+      return self.$$cast(rjustified + ljustified.slice(self.length));
+    }
+  end
+
+  def chomp(separator = $/)
+    return self if `separator === nil || self.length === 0`
+
+    separator = ::Opal.coerce_to!(separator, ::String, :to_str).to_s
+
+    %x{
+      var result;
+
+      if (separator === "\n") {
+        result = self.replace(/\r?\n?$/, '');
+      }
+      else if (separator === "") {
+        result = self.replace(/(\r?\n)+$/, '');
+      }
+      else if (self.length >= separator.length) {
+        var tail = self.substr(self.length - separator.length, separator.length);
+
+        if (tail === separator) {
+          result = self.substr(0, self.length - separator.length);
+        }
+      }
+
+      if (result != null) {
+        return self.$$cast(result);
+      }
+    }
+
+    self
+  end
+
+  def chop
+    %x{
+      var length = self.length, result;
+
+      if (length <= 1) {
+        result = "";
+      } else if (self.charAt(length - 1) === "\n" && self.charAt(length - 2) === "\r") {
+        result = self.substr(0, length - 2);
+      } else {
+        result = self.substr(0, length - 1);
+      }
+
+      return self.$$cast(result);
+    }
+  end
+
+  def chr
+    `self.charAt(0)`
+  end
+
+  def clone
+    copy = `new String(self)`
+    copy.copy_singleton_methods(self)
+    copy.initialize_clone(self)
+    copy
+  end
+
+  def dup
+    copy = `new String(self)`
+    copy.initialize_dup(self)
+    copy
+  end
+
+  def count(*sets)
+    %x{
+      if (sets.length === 0) {
+        #{::Kernel.raise ::ArgumentError, 'ArgumentError: wrong number of arguments (0 for 1+)'}
+      }
+      var char_class = char_class_from_char_sets(sets);
+      if (char_class === null) {
+        return 0;
+      }
+      return self.length - self.replace(new RegExp(char_class, 'g'), '').length;
+    }
+  end
+
+  def delete(*sets)
+    %x{
+      if (sets.length === 0) {
+        #{::Kernel.raise ::ArgumentError, 'ArgumentError: wrong number of arguments (0 for 1+)'}
+      }
+      var char_class = char_class_from_char_sets(sets);
+      if (char_class === null) {
+        return self;
+      }
+      return self.$$cast(self.replace(new RegExp(char_class, 'g'), ''));
+    }
+  end
+
+  def delete_prefix(prefix)
+    %x{
+      if (!prefix.$$is_string) {
+        prefix = $coerce_to(prefix, #{::String}, 'to_str');
+      }
+
+      if (self.slice(0, prefix.length) === prefix) {
+        return self.$$cast(self.slice(prefix.length));
+      } else {
+        return self;
+      }
+    }
+  end
+
+  def delete_suffix(suffix)
+    %x{
+      if (!suffix.$$is_string) {
+        suffix = $coerce_to(suffix, #{::String}, 'to_str');
+      }
+
+      if (self.slice(self.length - suffix.length) === suffix) {
+        return self.$$cast(self.slice(0, self.length - suffix.length));
+      } else {
+        return self;
+      }
+    }
+  end
+
+  def downcase
+    `self.$$cast(self.toLowerCase())`
+  end
+
+  def each_line(separator = $/, chomp: false, &block)
+    return enum_for :each_line, separator, chomp: chomp unless block_given?
+
+    %x{
+      if (separator === nil) {
+        Opal.yield1(block, self);
+
+        return self;
+      }
+
+      separator = $coerce_to(separator, #{::String}, 'to_str');
+
+      var a, i, n, length, chomped, trailing, splitted, value;
+
+      if (separator.length === 0) {
+        for (a = self.split(/((?:\r?\n){2})(?:(?:\r?\n)*)/), i = 0, n = a.length; i < n; i += 2) {
+          if (a[i] || a[i + 1]) {
+            value = (a[i] || "") + (a[i + 1] || "");
+            if (chomp) {
+              value = #{`value`.chomp("\n")};
+            }
+            Opal.yield1(block, value);
+          }
+        }
+
+        return self;
+      }
+
+      chomped  = #{chomp(separator)};
+      trailing = self.length != chomped.length;
+      splitted = chomped.split(separator);
+
+      for (i = 0, length = splitted.length; i < length; i++) {
+        value = splitted[i];
+        if (i < length - 1 || trailing) {
+          value += separator;
+        }
+        if (chomp) {
+          value = #{`value`.chomp(separator)};
+        }
+        Opal.yield1(block, value);
+      }
+    }
+
+    self
+  end
+
+  def empty?
+    `self.length === 0`
+  end
+
+  def end_with?(*suffixes)
+    %x{
+      for (var i = 0, length = suffixes.length; i < length; i++) {
+        var suffix = $coerce_to(suffixes[i], #{::String}, 'to_str').$to_s();
+
+        if (self.length >= suffix.length &&
+            self.substr(self.length - suffix.length, suffix.length) == suffix) {
+          return true;
+        }
+      }
+    }
+
+    false
+  end
+
+  def gsub(pattern, replacement = undefined, &block)
+    %x{
+      if (replacement === undefined && block === nil) {
+        return #{enum_for :gsub, pattern};
+      }
+
+      var result = '', match_data = nil, index = 0, match, _replacement;
+
+      if (pattern.$$is_regexp) {
+        pattern = $global_multiline_regexp(pattern);
+      } else {
+        pattern = $coerce_to(pattern, #{::String}, 'to_str');
+        pattern = new RegExp(pattern.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'), 'gm');
+      }
+
+      var lastIndex;
+      while (true) {
+        match = pattern.exec(self);
+
+        if (match === null) {
+          #{$~ = nil}
+          result += self.slice(index);
+          break;
+        }
+
+        match_data = #{::MatchData.new `pattern`, `match`};
+
+        if (replacement === undefined) {
+          lastIndex = pattern.lastIndex;
+          _replacement = block(match[0]);
+          pattern.lastIndex = lastIndex; // save and restore lastIndex
+        }
+        else if (replacement.$$is_hash) {
+          _replacement = #{`replacement`[`match[0]`].to_s};
+        }
+        else {
+          if (!replacement.$$is_string) {
+            replacement = $coerce_to(replacement, #{::String}, 'to_str');
+          }
+          _replacement = replacement.replace(/([\\]+)([0-9+&`'])/g, function (original, slashes, command) {
+            if (slashes.length % 2 === 0) {
+              return original;
+            }
+            switch (command) {
+            case "+":
+              for (var i = match.length - 1; i > 0; i--) {
+                if (match[i] !== undefined) {
+                  return slashes.slice(1) + match[i];
+                }
+              }
+              return '';
+            case "&": return slashes.slice(1) + match[0];
+            case "`": return slashes.slice(1) + self.slice(0, match.index);
+            case "'": return slashes.slice(1) + self.slice(match.index + match[0].length);
+            default:  return slashes.slice(1) + (match[command] || '');
+            }
+          }).replace(/\\\\/g, '\\');
+        }
+
+        if (pattern.lastIndex === match.index) {
+          result += (self.slice(index, match.index) + _replacement + (self[match.index] || ""));
+          pattern.lastIndex += 1;
+        }
+        else {
+          result += (self.slice(index, match.index) + _replacement)
+        }
+        index = pattern.lastIndex;
+      }
+
+      #{$~ = `match_data`}
+      return self.$$cast(result);
+    }
+  end
+
+  def hash
+    `self.toString()`
+  end
+
+  def hex
+    to_i 16
+  end
+
+  def include?(other)
+    %x{
+      if (!other.$$is_string) {
+        other = $coerce_to(other, #{::String}, 'to_str');
+      }
+      return self.indexOf(other) !== -1;
+    }
+  end
+
+  def index(search, offset = undefined)
+    %x{
+      var index,
+          match,
+          regex;
+
+      if (offset === undefined) {
+        offset = 0;
+      } else {
+        offset = $coerce_to(offset, #{::Integer}, 'to_int');
+        if (offset < 0) {
+          offset += self.length;
+          if (offset < 0) {
+            return nil;
+          }
+        }
+      }
+
+      if (search.$$is_regexp) {
+        regex = $global_multiline_regexp(search);
+        while (true) {
+          match = regex.exec(self);
+          if (match === null) {
+            #{$~ = nil};
+            index = -1;
+            break;
+          }
+          if (match.index >= offset) {
+            #{$~ = ::MatchData.new(`regex`, `match`)}
+            index = match.index;
+            break;
+          }
+          regex.lastIndex = match.index + 1;
+        }
+      } else {
+        search = $coerce_to(search, #{::String}, 'to_str');
+        if (search.length === 0 && offset > self.length) {
+          index = -1;
+        } else {
+          index = self.indexOf(search, offset);
+        }
+      }
+
+      return index === -1 ? nil : index;
+    }
+  end
+
+  def inspect
+    %x{
+      /* eslint-disable no-misleading-character-class */
+      var escapable = /[\\\"\x00-\x1f\u007F-\u009F\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,
+          meta = {
+            '\u0007': '\\a',
+            '\u001b': '\\e',
+            '\b': '\\b',
+            '\t': '\\t',
+            '\n': '\\n',
+            '\f': '\\f',
+            '\r': '\\r',
+            '\v': '\\v',
+            '"' : '\\"',
+            '\\': '\\\\'
+          },
+          escaped = self.replace(escapable, function (chr) {
+            if (meta[chr]) return meta[chr];
+            chr = chr.charCodeAt(0);
+            if (chr <= 0xff && (self.encoding["$binary?"]() || self.internal_encoding["$binary?"]())) {
+              return '\\x' + ('00' + chr.toString(16).toUpperCase()).slice(-2);
+            } else {
+              return '\\u' + ('0000' + chr.toString(16).toUpperCase()).slice(-4);
+            }
+          });
+      return '"' + escaped.replace(/\#[\$\@\{]/g, '\\$&') + '"';
+      /* eslint-enable no-misleading-character-class */
+    }
+  end
+
+  def intern
+    `self.toString()`
+  end
+
+  def lines(separator = $/, chomp: false, &block)
+    e = each_line(separator, chomp: chomp, &block)
+    block ? self : e.to_a
+  end
+
+  def ljust(width, padstr = ' ')
+    width  = `$coerce_to(#{width}, #{::Integer}, 'to_int')`
+    padstr = `$coerce_to(#{padstr}, #{::String}, 'to_str')`.to_s
+
+    if padstr.empty?
+      ::Kernel.raise ::ArgumentError, 'zero width padding'
+    end
+
+    return self if `width <= self.length`
+
+    %x{
+      var index  = -1,
+          result = "";
+
+      width -= self.length;
+
+      while (++index < width) {
+        result += padstr;
+      }
+
+      return self.$$cast(self + result.slice(0, width));
+    }
+  end
+
+  def lstrip
+    `self.replace(/^[\u0000\s]*/, '')`
+  end
+
+  def ascii_only?
+    # non-ASCII-compatible encoding must return false
+    %x{
+      if (!self.encoding.ascii) return false;
+      return /^[\x00-\x7F]*$/.test(self);
+    }
+  end
+
+  def match(pattern, pos = undefined, &block)
+    if String === pattern || pattern.respond_to?(:to_str)
+      pattern = ::Regexp.new(pattern.to_str)
+    end
+
+    unless ::Regexp === pattern
+      ::Kernel.raise ::TypeError, "wrong argument type #{pattern.class} (expected Regexp)"
+    end
+
+    pattern.match(self, pos, &block)
+  end
+
+  def match?(pattern, pos = undefined)
+    if String === pattern || pattern.respond_to?(:to_str)
+      pattern = ::Regexp.new(pattern.to_str)
+    end
+
+    unless ::Regexp === pattern
+      ::Kernel.raise ::TypeError, "wrong argument type #{pattern.class} (expected Regexp)"
+    end
+
+    pattern.match?(self, pos)
+  end
+
+  def next
+    %x{
+      var i = self.length;
+      if (i === 0) {
+        return self.$$cast('');
+      }
+      var result = self;
+      var first_alphanum_char_index = self.search(/[a-zA-Z0-9]/);
+      var carry = false;
+      var code;
+      while (i--) {
+        code = self.charCodeAt(i);
+        if ((code >= 48 && code <= 57) ||
+          (code >= 65 && code <= 90) ||
+          (code >= 97 && code <= 122)) {
+          switch (code) {
+          case 57:
+            carry = true;
+            code = 48;
+            break;
+          case 90:
+            carry = true;
+            code = 65;
+            break;
+          case 122:
+            carry = true;
+            code = 97;
+            break;
+          default:
+            carry = false;
+            code += 1;
+          }
+        } else {
+          if (first_alphanum_char_index === -1) {
+            if (code === 255) {
+              carry = true;
+              code = 0;
+            } else {
+              carry = false;
+              code += 1;
+            }
+          } else {
+            carry = true;
+          }
+        }
+        result = result.slice(0, i) + String.fromCharCode(code) + result.slice(i + 1);
+        if (carry && (i === 0 || i === first_alphanum_char_index)) {
+          switch (code) {
+          case 65:
+            break;
+          case 97:
+            break;
+          default:
+            code += 1;
+          }
+          if (i === 0) {
+            result = String.fromCharCode(code) + result;
+          } else {
+            result = result.slice(0, i) + String.fromCharCode(code) + result.slice(i);
+          }
+          carry = false;
+        }
+        if (!carry) {
+          break;
+        }
+      }
+      return self.$$cast(result);
+    }
+  end
+
+  def oct
+    %x{
+      var result,
+          string = self,
+          radix = 8;
+
+      if (/^\s*_/.test(string)) {
+        return 0;
+      }
+
+      string = string.replace(/^(\s*[+-]?)(0[bodx]?)(.+)$/i, function (original, head, flag, tail) {
+        switch (tail.charAt(0)) {
+        case '+':
+        case '-':
+          return original;
+        case '0':
+          if (tail.charAt(1) === 'x' && flag === '0x') {
+            return original;
+          }
+        }
+        switch (flag) {
+        case '0b':
+          radix = 2;
+          break;
+        case '0':
+        case '0o':
+          radix = 8;
+          break;
+        case '0d':
+          radix = 10;
+          break;
+        case '0x':
+          radix = 16;
+          break;
+        }
+        return head + tail;
+      });
+
+      result = parseInt(string.replace(/_(?!_)/g, ''), radix);
+      return isNaN(result) ? 0 : result;
+    }
+  end
+
+  def ord
+    %x{
+      if (typeof self.codePointAt === "function") {
+        return self.codePointAt(0);
+      }
+      else {
+        return self.charCodeAt(0);
+      }
+    }
+  end
+
+  def partition(sep)
+    %x{
+      var i, m;
+
+      if (sep.$$is_regexp) {
+        m = sep.exec(self);
+        if (m === null) {
+          i = -1;
+        } else {
+          #{::MatchData.new `sep`, `m`};
+          sep = m[0];
+          i = m.index;
+        }
+      } else {
+        sep = $coerce_to(sep, #{::String}, 'to_str');
+        i = self.indexOf(sep);
+      }
+
+      if (i === -1) {
+        return [self, '', ''];
+      }
+
+      return [
+        self.slice(0, i),
+        self.slice(i, i + sep.length),
+        self.slice(i + sep.length)
+      ];
+    }
+  end
+
+  def reverse
+    `self.split('').reverse().join('')`
+  end
+
+  def rindex(search, offset = undefined)
+    %x{
+      var i, m, r, _m;
+
+      if (offset === undefined) {
+        offset = self.length;
+      } else {
+        offset = $coerce_to(offset, #{::Integer}, 'to_int');
+        if (offset < 0) {
+          offset += self.length;
+          if (offset < 0) {
+            return nil;
+          }
+        }
+      }
+
+      if (search.$$is_regexp) {
+        m = null;
+        r = $global_multiline_regexp(search);
+        while (true) {
+          _m = r.exec(self);
+          if (_m === null || _m.index > offset) {
+            break;
+          }
+          m = _m;
+          r.lastIndex = m.index + 1;
+        }
+        if (m === null) {
+          #{$~ = nil}
+          i = -1;
+        } else {
+          #{::MatchData.new `r`, `m`};
+          i = m.index;
+        }
+      } else {
+        search = $coerce_to(search, #{::String}, 'to_str');
+        i = self.lastIndexOf(search, offset);
+      }
+
+      return i === -1 ? nil : i;
+    }
+  end
+
+  def rjust(width, padstr = ' ')
+    width  = `$coerce_to(#{width}, #{::Integer}, 'to_int')`
+    padstr = `$coerce_to(#{padstr}, #{::String}, 'to_str')`.to_s
+
+    if padstr.empty?
+      ::Kernel.raise ::ArgumentError, 'zero width padding'
+    end
+
+    return self if `width <= self.length`
+
+    %x{
+      var chars     = Math.floor(width - self.length),
+          patterns  = Math.floor(chars / padstr.length),
+          result    = Array(patterns + 1).join(padstr),
+          remaining = chars - result.length;
+
+      return self.$$cast(result + padstr.slice(0, remaining) + self);
+    }
+  end
+
+  def rpartition(sep)
+    %x{
+      var i, m, r, _m;
+
+      if (sep.$$is_regexp) {
+        m = null;
+        r = $global_multiline_regexp(sep);
+
+        while (true) {
+          _m = r.exec(self);
+          if (_m === null) {
+            break;
+          }
+          m = _m;
+          r.lastIndex = m.index + 1;
+        }
+
+        if (m === null) {
+          i = -1;
+        } else {
+          #{::MatchData.new `r`, `m`};
+          sep = m[0];
+          i = m.index;
+        }
+
+      } else {
+        sep = $coerce_to(sep, #{::String}, 'to_str');
+        i = self.lastIndexOf(sep);
+      }
+
+      if (i === -1) {
+        return ['', '', self];
+      }
+
+      return [
+        self.slice(0, i),
+        self.slice(i, i + sep.length),
+        self.slice(i + sep.length)
+      ];
+    }
+  end
+
+  def rstrip
+    `self.replace(/[\s\u0000]*$/, '')`
+  end
+
+  def scan(pattern, no_matchdata: false, &block)
+    %x{
+      var result = [],
+          match_data = nil,
+          match;
+
+      if (pattern.$$is_regexp) {
+        pattern = $global_multiline_regexp(pattern);
+      } else {
+        pattern = $coerce_to(pattern, #{::String}, 'to_str');
+        pattern = new RegExp(pattern.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'), 'gm');
+      }
+
+      while ((match = pattern.exec(self)) != null) {
+        match_data = #{::MatchData.new `pattern`, `match`, no_matchdata: no_matchdata};
+        if (block === nil) {
+          match.length == 1 ? result.push(match[0]) : result.push(#{`match_data`.captures});
+        } else {
+          match.length == 1 ? Opal.yield1(block, match[0]) : Opal.yield1(block, #{`match_data`.captures});
+        }
+        if (pattern.lastIndex === match.index) {
+          pattern.lastIndex += 1;
+        }
+      }
+
+      if (!no_matchdata) #{$~ = `match_data`};
+
+      return (block !== nil ? self : result);
+    }
+  end
+
+  # We redefine this method on String, as kernel.rb is in strict mode
+  # so that things like Boolean don't get boxed. For String though -
+  # we either need to box it to define properties on it, or run it in
+  # non-strict mode. This is a mess and we need to come back to it
+  # at a later time.
+  def singleton_class
+    `Opal.get_singleton_class(self)`
+  end
+
+  def split(pattern = undefined, limit = undefined)
+    %x{
+      if (self.length === 0) {
+        return [];
+      }
+
+      if (limit === undefined) {
+        limit = 0;
+      } else {
+        limit = #{::Opal.coerce_to!(limit, ::Integer, :to_int)};
+        if (limit === 1) {
+          return [self];
+        }
+      }
+
+      if (pattern === undefined || pattern === nil) {
+        pattern = #{$; || ' '};
+      }
+
+      var result = [],
+          string = self.toString(),
+          index = 0,
+          match,
+          i, ii;
+
+      if (pattern.$$is_regexp) {
+        pattern = $global_multiline_regexp(pattern);
+      } else {
+        pattern = $coerce_to(pattern, #{::String}, 'to_str').$to_s();
+        if (pattern === ' ') {
+          pattern = /\s+/gm;
+          string = string.replace(/^\s+/, '');
+        } else {
+          pattern = new RegExp(pattern.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'), 'gm');
+        }
+      }
+
+      result = string.split(pattern);
+
+      if (result.length === 1 && result[0] === string) {
+        return [self.$$cast(result[0])];
+      }
+
+      while ((i = result.indexOf(undefined)) !== -1) {
+        result.splice(i, 1);
+      }
+
+      function castResult() {
+        for (i = 0; i < result.length; i++) {
+          result[i] = self.$$cast(result[i]);
+        }
+      }
+
+      if (limit === 0) {
+        while (result[result.length - 1] === '') {
+          result.length -= 1;
+        }
+        castResult();
+        return result;
+      }
+
+      match = pattern.exec(string);
+
+      if (limit < 0) {
+        if (match !== null && match[0] === '' && pattern.source.indexOf('(?=') === -1) {
+          for (i = 0, ii = match.length; i < ii; i++) {
+            result.push('');
+          }
+        }
+        castResult();
+        return result;
+      }
+
+      if (match !== null && match[0] === '') {
+        result.splice(limit - 1, result.length - 1, result.slice(limit - 1).join(''));
+        castResult();
+        return result;
+      }
+
+      if (limit >= result.length) {
+        castResult();
+        return result;
+      }
+
+      i = 0;
+      while (match !== null) {
+        i++;
+        index = pattern.lastIndex;
+        if (i + 1 === limit) {
+          break;
+        }
+        match = pattern.exec(string);
+      }
+      result.splice(limit - 1, result.length - 1, string.slice(index));
+      castResult();
+      return result;
+    }
+  end
+
+  def squeeze(*sets)
+    %x{
+      if (sets.length === 0) {
+        return self.$$cast(self.replace(/(.)\1+/g, '$1'));
+      }
+      var char_class = char_class_from_char_sets(sets);
+      if (char_class === null) {
+        return self;
+      }
+      return self.$$cast(self.replace(new RegExp('(' + char_class + ')\\1+', 'g'), '$1'));
+    }
+  end
+
+  def start_with?(*prefixes)
+    %x{
+      for (var i = 0, length = prefixes.length; i < length; i++) {
+        if (prefixes[i].$$is_regexp) {
+          var regexp = prefixes[i];
+          var match = regexp.exec(self);
+
+          if (match != null && match.index === 0) {
+            #{$~ = ::MatchData.new(`regexp`, `match`)};
+            return true;
+          } else {
+            #{$~ = nil}
+          }
+        } else {
+          var prefix = $coerce_to(prefixes[i], #{::String}, 'to_str').$to_s();
+
+          if (self.indexOf(prefix) === 0) {
+            return true;
+          }
+        }
+      }
+
+      return false;
+    }
+  end
+
+  def strip
+    `self.replace(/^[\s\u0000]*|[\s\u0000]*$/g, '')`
+  end
+
+  def sub(pattern, replacement = undefined, &block)
+    %x{
+      if (!pattern.$$is_regexp) {
+        pattern = $coerce_to(pattern, #{::String}, 'to_str');
+        pattern = new RegExp(pattern.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'));
+      }
+
+      var result, match = pattern.exec(self);
+
+      if (match === null) {
+        #{$~ = nil}
+        result = self.toString();
+      } else {
+        #{::MatchData.new `pattern`, `match`}
+
+        if (replacement === undefined) {
+
+          if (block === nil) {
+            #{::Kernel.raise ::ArgumentError, 'wrong number of arguments (1 for 2)'}
+          }
+          result = self.slice(0, match.index) + block(match[0]) + self.slice(match.index + match[0].length);
+
+        } else if (replacement.$$is_hash) {
+
+          result = self.slice(0, match.index) + #{`replacement`[`match[0]`].to_s} + self.slice(match.index + match[0].length);
+
+        } else {
+
+          replacement = $coerce_to(replacement, #{::String}, 'to_str');
+
+          replacement = replacement.replace(/([\\]+)([0-9+&`'])/g, function (original, slashes, command) {
+            if (slashes.length % 2 === 0) {
+              return original;
+            }
+            switch (command) {
+            case "+":
+              for (var i = match.length - 1; i > 0; i--) {
+                if (match[i] !== undefined) {
+                  return slashes.slice(1) + match[i];
+                }
+              }
+              return '';
+            case "&": return slashes.slice(1) + match[0];
+            case "`": return slashes.slice(1) + self.slice(0, match.index);
+            case "'": return slashes.slice(1) + self.slice(match.index + match[0].length);
+            default:  return slashes.slice(1) + (match[command] || '');
+            }
+          }).replace(/\\\\/g, '\\');
+
+          result = self.slice(0, match.index) + replacement + self.slice(match.index + match[0].length);
+        }
+      }
+
+      return self.$$cast(result);
+    }
+  end
+
+  def sum(n = 16)
+    %x{
+      n = $coerce_to(n, #{::Integer}, 'to_int');
+
+      var result = 0,
+          length = self.length,
+          i = 0;
+
+      for (; i < length; i++) {
+        result += self.charCodeAt(i);
+      }
+
+      if (n <= 0) {
+        return result;
+      }
+
+      return result & (Math.pow(2, n) - 1);
+    }
+  end
+
+  def swapcase
+    %x{
+      var str = self.replace(/([a-z]+)|([A-Z]+)/g, function($0,$1,$2) {
+        return $1 ? $0.toUpperCase() : $0.toLowerCase();
+      });
+
+      if (self.constructor === String) {
+        return str;
+      }
+
+      return #{self.class.new `str`};
+    }
+  end
+
+  def to_f
+    %x{
+      if (self.charAt(0) === '_') {
+        return 0;
+      }
+
+      var result = parseFloat(self.replace(/_/g, ''));
+
+      if (isNaN(result) || result == Infinity || result == -Infinity) {
+        return 0;
+      }
+      else {
+        return result;
+      }
+    }
+  end
+
+  def to_i(base = 10)
+    %x{
+      var result,
+          string = self.toLowerCase(),
+          radix = $coerce_to(base, #{::Integer}, 'to_int');
+
+      if (radix === 1 || radix < 0 || radix > 36) {
+        #{::Kernel.raise ::ArgumentError, "invalid radix #{`radix`}"}
+      }
+
+      if (/^\s*_/.test(string)) {
+        return 0;
+      }
+
+      string = string.replace(/^(\s*[+-]?)(0[bodx]?)(.+)$/, function (original, head, flag, tail) {
+        switch (tail.charAt(0)) {
+        case '+':
+        case '-':
+          return original;
+        case '0':
+          if (tail.charAt(1) === 'x' && flag === '0x' && (radix === 0 || radix === 16)) {
+            return original;
+          }
+        }
+        switch (flag) {
+        case '0b':
+          if (radix === 0 || radix === 2) {
+            radix = 2;
+            return head + tail;
+          }
+          break;
+        case '0':
+        case '0o':
+          if (radix === 0 || radix === 8) {
+            radix = 8;
+            return head + tail;
+          }
+          break;
+        case '0d':
+          if (radix === 0 || radix === 10) {
+            radix = 10;
+            return head + tail;
+          }
+          break;
+        case '0x':
+          if (radix === 0 || radix === 16) {
+            radix = 16;
+            return head + tail;
+          }
+          break;
+        }
+        return original
+      });
+
+      result = parseInt(string.replace(/_(?!_)/g, ''), radix);
+      return isNaN(result) ? 0 : result;
+    }
+  end
+
+  def to_proc
+    method_name = '$' + `self.valueOf()`
+
+    ::Kernel.proc do |*args, &block|
+      %x{
+        if (args.length === 0) {
+          #{::Kernel.raise ::ArgumentError, 'no receiver given'}
+        }
+
+        var recv = args[0];
+
+        if (recv == null) recv = nil;
+
+        var body = recv[#{method_name}];
+
+        if (!body) {
+          return recv.$method_missing.apply(recv, args);
+        }
+
+        if (typeof block === 'function') {
+          body.$$p = block;
+        }
+
+        if (args.length === 1) {
+          return body.call(recv);
+        } else {
+          return body.apply(recv, args.slice(1));
+        }
+      }
+    end
+  end
+
+  def to_s
+    `self.toString()`
+  end
+
+  def tr(from, to)
+    %x{
+      from = $coerce_to(from, #{::String}, 'to_str').$to_s();
+      to = $coerce_to(to, #{::String}, 'to_str').$to_s();
+
+      if (from.length == 0 || from === to) {
+        return self;
+      }
+
+      var i, in_range, c, ch, start, end, length;
+      var subs = {};
+      var from_chars = from.split('');
+      var from_length = from_chars.length;
+      var to_chars = to.split('');
+      var to_length = to_chars.length;
+
+      var inverse = false;
+      var global_sub = null;
+      if (from_chars[0] === '^' && from_chars.length > 1) {
+        inverse = true;
+        from_chars.shift();
+        global_sub = to_chars[to_length - 1]
+        from_length -= 1;
+      }
+
+      var from_chars_expanded = [];
+      var last_from = null;
+      in_range = false;
+      for (i = 0; i < from_length; i++) {
+        ch = from_chars[i];
+        if (last_from == null) {
+          last_from = ch;
+          from_chars_expanded.push(ch);
+        }
+        else if (ch === '-') {
+          if (last_from === '-') {
+            from_chars_expanded.push('-');
+            from_chars_expanded.push('-');
+          }
+          else if (i == from_length - 1) {
+            from_chars_expanded.push('-');
+          }
+          else {
+            in_range = true;
+          }
+        }
+        else if (in_range) {
+          start = last_from.charCodeAt(0);
+          end = ch.charCodeAt(0);
+          if (start > end) {
+            #{::Kernel.raise ::ArgumentError, "invalid range \"#{`String.fromCharCode(start)`}-#{`String.fromCharCode(end)`}\" in string transliteration"}
+          }
+          for (c = start + 1; c < end; c++) {
+            from_chars_expanded.push(String.fromCharCode(c));
+          }
+          from_chars_expanded.push(ch);
+          in_range = null;
+          last_from = null;
+        }
+        else {
+          from_chars_expanded.push(ch);
+        }
+      }
+
+      from_chars = from_chars_expanded;
+      from_length = from_chars.length;
+
+      if (inverse) {
+        for (i = 0; i < from_length; i++) {
+          subs[from_chars[i]] = true;
+        }
+      }
+      else {
+        if (to_length > 0) {
+          var to_chars_expanded = [];
+          var last_to = null;
+          in_range = false;
+          for (i = 0; i < to_length; i++) {
+            ch = to_chars[i];
+            if (last_to == null) {
+              last_to = ch;
+              to_chars_expanded.push(ch);
+            }
+            else if (ch === '-') {
+              if (last_to === '-') {
+                to_chars_expanded.push('-');
+                to_chars_expanded.push('-');
+              }
+              else if (i == to_length - 1) {
+                to_chars_expanded.push('-');
+              }
+              else {
+                in_range = true;
+              }
+            }
+            else if (in_range) {
+              start = last_to.charCodeAt(0);
+              end = ch.charCodeAt(0);
+              if (start > end) {
+                #{::Kernel.raise ::ArgumentError, "invalid range \"#{`String.fromCharCode(start)`}-#{`String.fromCharCode(end)`}\" in string transliteration"}
+              }
+              for (c = start + 1; c < end; c++) {
+                to_chars_expanded.push(String.fromCharCode(c));
+              }
+              to_chars_expanded.push(ch);
+              in_range = null;
+              last_to = null;
+            }
+            else {
+              to_chars_expanded.push(ch);
+            }
+          }
+
+          to_chars = to_chars_expanded;
+          to_length = to_chars.length;
+        }
+
+        var length_diff = from_length - to_length;
+        if (length_diff > 0) {
+          var pad_char = (to_length > 0 ? to_chars[to_length - 1] : '');
+          for (i = 0; i < length_diff; i++) {
+            to_chars.push(pad_char);
+          }
+        }
+
+        for (i = 0; i < from_length; i++) {
+          subs[from_chars[i]] = to_chars[i];
+        }
+      }
+
+      var new_str = ''
+      for (i = 0, length = self.length; i < length; i++) {
+        ch = self.charAt(i);
+        var sub = subs[ch];
+        if (inverse) {
+          new_str += (sub == null ? global_sub : ch);
+        }
+        else {
+          new_str += (sub != null ? sub : ch);
+        }
+      }
+      return self.$$cast(new_str);
+    }
+  end
+
+  def tr_s(from, to)
+    %x{
+      from = $coerce_to(from, #{::String}, 'to_str').$to_s();
+      to = $coerce_to(to, #{::String}, 'to_str').$to_s();
+
+      if (from.length == 0) {
+        return self;
+      }
+
+      var i, in_range, c, ch, start, end, length;
+      var subs = {};
+      var from_chars = from.split('');
+      var from_length = from_chars.length;
+      var to_chars = to.split('');
+      var to_length = to_chars.length;
+
+      var inverse = false;
+      var global_sub = null;
+      if (from_chars[0] === '^' && from_chars.length > 1) {
+        inverse = true;
+        from_chars.shift();
+        global_sub = to_chars[to_length - 1]
+        from_length -= 1;
+      }
+
+      var from_chars_expanded = [];
+      var last_from = null;
+      in_range = false;
+      for (i = 0; i < from_length; i++) {
+        ch = from_chars[i];
+        if (last_from == null) {
+          last_from = ch;
+          from_chars_expanded.push(ch);
+        }
+        else if (ch === '-') {
+          if (last_from === '-') {
+            from_chars_expanded.push('-');
+            from_chars_expanded.push('-');
+          }
+          else if (i == from_length - 1) {
+            from_chars_expanded.push('-');
+          }
+          else {
+            in_range = true;
+          }
+        }
+        else if (in_range) {
+          start = last_from.charCodeAt(0);
+          end = ch.charCodeAt(0);
+          if (start > end) {
+            #{::Kernel.raise ::ArgumentError, "invalid range \"#{`String.fromCharCode(start)`}-#{`String.fromCharCode(end)`}\" in string transliteration"}
+          }
+          for (c = start + 1; c < end; c++) {
+            from_chars_expanded.push(String.fromCharCode(c));
+          }
+          from_chars_expanded.push(ch);
+          in_range = null;
+          last_from = null;
+        }
+        else {
+          from_chars_expanded.push(ch);
+        }
+      }
+
+      from_chars = from_chars_expanded;
+      from_length = from_chars.length;
+
+      if (inverse) {
+        for (i = 0; i < from_length; i++) {
+          subs[from_chars[i]] = true;
+        }
+      }
+      else {
+        if (to_length > 0) {
+          var to_chars_expanded = [];
+          var last_to = null;
+          in_range = false;
+          for (i = 0; i < to_length; i++) {
+            ch = to_chars[i];
+            if (last_from == null) {
+              last_from = ch;
+              to_chars_expanded.push(ch);
+            }
+            else if (ch === '-') {
+              if (last_to === '-') {
+                to_chars_expanded.push('-');
+                to_chars_expanded.push('-');
+              }
+              else if (i == to_length - 1) {
+                to_chars_expanded.push('-');
+              }
+              else {
+                in_range = true;
+              }
+            }
+            else if (in_range) {
+              start = last_from.charCodeAt(0);
+              end = ch.charCodeAt(0);
+              if (start > end) {
+                #{::Kernel.raise ::ArgumentError, "invalid range \"#{`String.fromCharCode(start)`}-#{`String.fromCharCode(end)`}\" in string transliteration"}
+              }
+              for (c = start + 1; c < end; c++) {
+                to_chars_expanded.push(String.fromCharCode(c));
+              }
+              to_chars_expanded.push(ch);
+              in_range = null;
+              last_from = null;
+            }
+            else {
+              to_chars_expanded.push(ch);
+            }
+          }
+
+          to_chars = to_chars_expanded;
+          to_length = to_chars.length;
+        }
+
+        var length_diff = from_length - to_length;
+        if (length_diff > 0) {
+          var pad_char = (to_length > 0 ? to_chars[to_length - 1] : '');
+          for (i = 0; i < length_diff; i++) {
+            to_chars.push(pad_char);
+          }
+        }
+
+        for (i = 0; i < from_length; i++) {
+          subs[from_chars[i]] = to_chars[i];
+        }
+      }
+      var new_str = ''
+      var last_substitute = null
+      for (i = 0, length = self.length; i < length; i++) {
+        ch = self.charAt(i);
+        var sub = subs[ch]
+        if (inverse) {
+          if (sub == null) {
+            if (last_substitute == null) {
+              new_str += global_sub;
+              last_substitute = true;
+            }
+          }
+          else {
+            new_str += ch;
+            last_substitute = null;
+          }
+        }
+        else {
+          if (sub != null) {
+            if (last_substitute == null || last_substitute !== sub) {
+              new_str += sub;
+              last_substitute = sub;
+            }
+          }
+          else {
+            new_str += ch;
+            last_substitute = null;
+          }
+        }
+      }
+      return self.$$cast(new_str);
+    }
+  end
+
+  def upcase
+    `self.$$cast(self.toUpperCase())`
+  end
+
+  def upto(stop, excl = false, &block)
+    return enum_for :upto, stop, excl unless block_given?
+    %x{
+      var a, b, s = self.toString();
+
+      stop = $coerce_to(stop, #{::String}, 'to_str');
+
+      if (s.length === 1 && stop.length === 1) {
+
+        a = s.charCodeAt(0);
+        b = stop.charCodeAt(0);
+
+        while (a <= b) {
+          if (excl && a === b) {
+            break;
+          }
+
+          block(String.fromCharCode(a));
+
+          a += 1;
+        }
+
+      } else if (parseInt(s, 10).toString() === s && parseInt(stop, 10).toString() === stop) {
+
+        a = parseInt(s, 10);
+        b = parseInt(stop, 10);
+
+        while (a <= b) {
+          if (excl && a === b) {
+            break;
+          }
+
+          block(a.toString());
+
+          a += 1;
+        }
+
+      } else {
+
+        while (s.length <= stop.length && s <= stop) {
+          if (excl && s === stop) {
+            break;
+          }
+
+          block(s);
+
+          s = #{`s`.succ};
+        }
+
+      }
+      return self;
+    }
+  end
+
+  %x{
+    function char_class_from_char_sets(sets) {
+      function explode_sequences_in_character_set(set) {
+        var result = '',
+            i, len = set.length,
+            curr_char,
+            skip_next_dash,
+            char_code_from,
+            char_code_upto,
+            char_code;
+        for (i = 0; i < len; i++) {
+          curr_char = set.charAt(i);
+          if (curr_char === '-' && i > 0 && i < (len - 1) && !skip_next_dash) {
+            char_code_from = set.charCodeAt(i - 1);
+            char_code_upto = set.charCodeAt(i + 1);
+            if (char_code_from > char_code_upto) {
+              #{::Kernel.raise ::ArgumentError, "invalid range \"#{`char_code_from`}-#{`char_code_upto`}\" in string transliteration"}
+            }
+            for (char_code = char_code_from + 1; char_code < char_code_upto + 1; char_code++) {
+              result += String.fromCharCode(char_code);
+            }
+            skip_next_dash = true;
+            i++;
+          } else {
+            skip_next_dash = (curr_char === '\\');
+            result += curr_char;
+          }
+        }
+        return result;
+      }
+
+      function intersection(setA, setB) {
+        if (setA.length === 0) {
+          return setB;
+        }
+        var result = '',
+            i, len = setA.length,
+            chr;
+        for (i = 0; i < len; i++) {
+          chr = setA.charAt(i);
+          if (setB.indexOf(chr) !== -1) {
+            result += chr;
+          }
+        }
+        return result;
+      }
+
+      var i, len, set, neg, chr, tmp,
+          pos_intersection = '',
+          neg_intersection = '';
+
+      for (i = 0, len = sets.length; i < len; i++) {
+        set = $coerce_to(sets[i], #{::String}, 'to_str');
+        neg = (set.charAt(0) === '^' && set.length > 1);
+        set = explode_sequences_in_character_set(neg ? set.slice(1) : set);
+        if (neg) {
+          neg_intersection = intersection(neg_intersection, set);
+        } else {
+          pos_intersection = intersection(pos_intersection, set);
+        }
+      }
+
+      if (pos_intersection.length > 0 && neg_intersection.length > 0) {
+        tmp = '';
+        for (i = 0, len = pos_intersection.length; i < len; i++) {
+          chr = pos_intersection.charAt(i);
+          if (neg_intersection.indexOf(chr) === -1) {
+            tmp += chr;
+          }
+        }
+        pos_intersection = tmp;
+        neg_intersection = '';
+      }
+
+      if (pos_intersection.length > 0) {
+        return '[' + #{::Regexp.escape(`pos_intersection`)} + ']';
+      }
+
+      if (neg_intersection.length > 0) {
+        return '[^' + #{::Regexp.escape(`neg_intersection`)} + ']';
+      }
+
+      return null;
+    }
+  }
+
+  def instance_variables
+    []
+  end
+
+  def self._load(*args)
+    new(*args)
+  end
+
+  def unicode_normalize(form = :nfc)
+    ::Kernel.raise ::ArgumentError, "Invalid normalization form #{form}" unless %i[nfc nfd nfkc nfkd].include?(form)
+    `self.normalize(#{form.upcase})`
+  end
+
+  def unicode_normalized?(form = :nfc)
+    unicode_normalize(form) == self
+  end
+
+  def unpack(format)
+    ::Kernel.raise "To use String#unpack, you must first require 'corelib/string/unpack'."
+  end
+
+  def unpack1(format)
+    ::Kernel.raise "To use String#unpack1, you must first require 'corelib/string/unpack'."
+  end
+
+  def freeze
+    %x{
+      if (typeof self === 'string') return self;
+      self.$$frozen = true;
+      return self;
+    }
+  end
+
+  def -@
+    %x{
+      if (typeof self === 'string') return self;
+      if (self.$$frozen === true) return self;
+      if (self.encoding.name == 'UTF-8' && self.internal_encoding.name == 'UTF-8') return self.toString();
+      return self.$dup().$freeze();
+    }
+  end
+
+  def frozen?
+    `typeof self === 'string' || self.$$frozen === true`
+  end
+
+  alias +@ dup
+  alias === ==
+  alias byteslice []
+  alias eql? ==
+  alias equal? ===
+  alias object_id __id__
+  alias slice []
+  alias succ next
+  alias to_str to_s
+  alias to_sym intern
+
+  ::Opal.pristine self, :initialize
+end
+
+Symbol = String
diff --git a/opal/corelib/string/encoding.rb b/opal/corelib/string/encoding.rb
new file mode 100644
index 00000000..62985eba
--- /dev/null
+++ b/opal/corelib/string/encoding.rb
@@ -0,0 +1,418 @@
+require 'corelib/string'
+
+class ::Encoding
+  def self.register(name, options = {}, &block)
+    names = [name] + (options[:aliases] || [])
+    ascii = options[:ascii] || false
+    dummy = options[:dummy] || false
+
+    if options[:inherits]
+      encoding = options[:inherits].clone
+      encoding.initialize(name, names, ascii, dummy)
+    else
+      encoding = new(name, names, ascii, dummy)
+    end
+    encoding.instance_eval(&block) if block_given?
+
+    register = `Opal.encodings`
+    names.each do |encoding_name|
+      const_set encoding_name.tr('-', '_'), encoding
+      register.JS[encoding_name] = encoding
+    end
+  end
+
+  def self.find(name)
+    return default_external if name == :default_external
+    `return Opal.find_encoding(name)`
+  end
+
+  singleton_class.attr_accessor :default_external
+
+  attr_reader :name, :names
+
+  def initialize(name, names, ascii, dummy)
+    @name  = name
+    @names = names
+    @ascii = ascii
+    @dummy = dummy
+  end
+
+  def ascii_compatible?
+    @ascii
+  end
+
+  def dummy?
+    @dummy
+  end
+
+  def binary?
+    false
+  end
+
+  def to_s
+    @name
+  end
+
+  def inspect
+    "#<Encoding:#{@name}#{' (dummy)' if @dummy}>"
+  end
+
+  # methods to implement per encoding
+  def charsize(string)
+    %x{
+      var len = 0;
+      for (var i = 0, length = string.length; i < length; i++) {
+        var charcode = string.charCodeAt(i);
+        if (!(charcode >= 0xD800 && charcode <= 0xDBFF)) {
+          len++;
+        }
+      }
+      return len;
+    }
+  end
+
+  def each_char(string, &block)
+    %x{
+      var low_surrogate = "";
+      for (var i = 0, length = string.length; i < length; i++) {
+        var charcode = string.charCodeAt(i);
+        var chr = string.charAt(i);
+        if (charcode >= 0xDC00 && charcode <= 0xDFFF) {
+          low_surrogate = chr;
+          continue;
+        }
+        else if (charcode >= 0xD800 && charcode <= 0xDBFF) {
+          chr = low_surrogate + chr;
+        }
+        if (string.encoding.name != "UTF-8") {
+          chr = new String(chr);
+          chr.encoding = string.encoding;
+        }
+        Opal.yield1(block, chr);
+      }
+    }
+  end
+
+  def each_byte(*)
+    ::Kernel.raise ::NotImplementedError
+  end
+
+  def bytesize(*)
+    ::Kernel.raise ::NotImplementedError
+  end
+
+  class ::EncodingError < ::StandardError; end
+  class ::CompatibilityError < ::EncodingError; end
+end
+
+::Encoding.register 'UTF-8', aliases: ['CP65001'], ascii: true do
+  def each_byte(string, &block)
+    %x{
+      // Taken from: https://github.com/feross/buffer/blob/f52dffd9df0445b93c0c9065c2f8f0f46b2c729a/index.js#L1954-L2032
+      var units = Infinity;
+      var codePoint;
+      var length = string.length;
+      var leadSurrogate = null;
+
+      for (var i = 0; i < length; ++i) {
+        codePoint = string.charCodeAt(i);
+
+        // is surrogate component
+        if (codePoint > 0xD7FF && codePoint < 0xE000) {
+          // last char was a lead
+          if (!leadSurrogate) {
+            // no lead yet
+            if (codePoint > 0xDBFF) {
+              // unexpected trail
+              if ((units -= 3) > -1) {
+                #{yield `0xEF`};
+                #{yield `0xBF`};
+                #{yield `0xBD`};
+              }
+              continue;
+            } else if (i + 1 === length) {
+              // unpaired lead
+              if ((units -= 3) > -1) {
+                #{yield `0xEF`};
+                #{yield `0xBF`};
+                #{yield `0xBD`};
+              }
+              continue;
+            }
+
+            // valid lead
+            leadSurrogate = codePoint;
+
+            continue;
+          }
+
+          // 2 leads in a row
+          if (codePoint < 0xDC00) {
+            if ((units -= 3) > -1) {
+              #{yield `0xEF`};
+              #{yield `0xBF`};
+              #{yield `0xBD`};
+            }
+            leadSurrogate = codePoint;
+            continue;
+          }
+
+          // valid surrogate pair
+          codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000;
+        } else if (leadSurrogate) {
+          // valid bmp char, but last char was a lead
+          if ((units -= 3) > -1) {
+            #{yield `0xEF`};
+            #{yield `0xBF`};
+            #{yield `0xBD`};
+          }
+        }
+
+        leadSurrogate = null;
+
+        // encode utf8
+        if (codePoint < 0x80) {
+          if ((units -= 1) < 0) break;
+          #{yield `codePoint`};
+        } else if (codePoint < 0x800) {
+          if ((units -= 2) < 0) break;
+          #{yield `codePoint >> 0x6 | 0xC0`};
+          #{yield `codePoint & 0x3F | 0x80`};
+        } else if (codePoint < 0x10000) {
+          if ((units -= 3) < 0) break;
+          #{yield `codePoint >> 0xC | 0xE0`};
+          #{yield `codePoint >> 0x6 & 0x3F | 0x80`};
+          #{yield `codePoint & 0x3F | 0x80`};
+        } else if (codePoint < 0x110000) {
+          if ((units -= 4) < 0) break;
+          #{yield `codePoint >> 0x12 | 0xF0`};
+          #{yield `codePoint >> 0xC & 0x3F | 0x80`};
+          #{yield `codePoint >> 0x6 & 0x3F | 0x80`};
+          #{yield `codePoint & 0x3F | 0x80`};
+        } else {
+          // Invalid code point
+        }
+      }
+    }
+  end
+
+  def bytesize(string)
+    string.bytes.length
+  end
+end
+
+::Encoding.register 'UTF-16LE' do
+  def each_byte(string, &block)
+    %x{
+      for (var i = 0, length = string.length; i < length; i++) {
+        var code = string.charCodeAt(i);
+
+        #{yield `code & 0xff`};
+        #{yield `code >> 8`};
+      }
+    }
+  end
+
+  def bytesize(string)
+    `string.length * 2`
+  end
+end
+
+::Encoding.register 'UTF-16BE', inherits: ::Encoding::UTF_16LE do
+  def each_byte(string, &block)
+    %x{
+      for (var i = 0, length = string.length; i < length; i++) {
+        var code = string.charCodeAt(i);
+
+        #{yield `code >> 8`};
+        #{yield `code & 0xff`};
+      }
+    }
+  end
+end
+
+::Encoding.register 'UTF-32LE' do
+  def each_byte(string, &block)
+    %x{
+      for (var i = 0, length = string.length; i < length; i++) {
+        var code = string.charCodeAt(i);
+
+        #{yield `code & 0xff`};
+        #{yield `code >> 8`};
+        #{yield 0};
+        #{yield 0};
+      }
+    }
+  end
+
+  def bytesize(string)
+    `string.length * 4`
+  end
+end
+
+::Encoding.register 'UTF-32BE', inherits: ::Encoding::UTF_32LE do
+  def each_byte(string, &block)
+    %x{
+      for (var i = 0, length = string.length; i < length; i++) {
+        var code = string.charCodeAt(i);
+
+        #{yield 0};
+        #{yield 0};
+        #{yield `code >> 8`};
+        #{yield `code & 0xff`};
+      }
+    }
+  end
+end
+
+::Encoding.register 'ASCII-8BIT', aliases: ['BINARY'], ascii: true do
+  def each_char(string, &block)
+    %x{
+      for (var i = 0, length = string.length; i < length; i++) {
+        var chr = new String(string.charAt(i));
+        chr.encoding = string.encoding;
+        #{yield `chr`};
+      }
+    }
+  end
+
+  def charsize(string)
+    `string.length`
+  end
+
+  def each_byte(string, &block)
+    %x{
+      for (var i = 0, length = string.length; i < length; i++) {
+        var code = string.charCodeAt(i);
+        #{yield `code & 0xff`};
+      }
+    }
+  end
+
+  def bytesize(string)
+    `string.length`
+  end
+
+  def binary?
+    true
+  end
+end
+
+::Encoding.register 'ISO-8859-1', aliases: ['ISO8859-1'], ascii: true, inherits: ::Encoding::ASCII_8BIT
+::Encoding.register 'US-ASCII', aliases: ['ASCII'], ascii: true, inherits: ::Encoding::ASCII_8BIT
+
+class ::String
+  attr_reader :encoding
+  attr_reader :internal_encoding
+  `Opal.prop(String.prototype, 'bytes', nil)`
+  `Opal.prop(String.prototype, 'encoding', #{::Encoding::UTF_8})`
+  `Opal.prop(String.prototype, 'internal_encoding', #{::Encoding::UTF_8})`
+
+  def b
+    dup.force_encoding('binary')
+  end
+
+  def bytesize
+    @internal_encoding.bytesize(self)
+  end
+
+  def each_byte(&block)
+    return enum_for(:each_byte) { bytesize } unless block_given?
+
+    @internal_encoding.each_byte(self, &block)
+
+    self
+  end
+
+  def bytes
+    # REMIND: required when running in strict mode, otherwise the following error will be thrown:
+    # Cannot create property 'bytes' on string 'abc'
+    %x{
+      if (typeof self === 'string') {
+        return #{`new String(self)`.each_byte.to_a};
+      }
+    }
+
+    @bytes ||= each_byte.to_a
+    @bytes.dup
+  end
+
+  def each_char(&block)
+    return enum_for(:each_char) { length } unless block_given?
+
+    @encoding.each_char(self, &block)
+
+    self
+  end
+
+  def chars(&block)
+    return each_char.to_a unless block
+
+    each_char(&block)
+  end
+
+  def each_codepoint(&block)
+    return enum_for :each_codepoint unless block_given?
+    %x{
+      for (var i = 0, length = self.length; i < length; i++) {
+        #{yield `self.codePointAt(i)`};
+      }
+    }
+    self
+  end
+
+  def codepoints(&block)
+    # If a block is given, which is a deprecated form, works the same as each_codepoint.
+    return each_codepoint(&block) if block_given?
+    each_codepoint.to_a
+  end
+
+  def encode(encoding)
+    `Opal.enc(self, encoding)`
+  end
+
+  def force_encoding(encoding)
+    %x{
+      var str = self;
+
+      if (encoding === str.encoding) { return str; }
+
+      encoding = #{::Opal.coerce_to!(encoding, ::String, :to_s)};
+      encoding = #{::Encoding.find(encoding)};
+
+      if (encoding === str.encoding) { return str; }
+
+      str = Opal.set_encoding(str, encoding);
+
+      return str;
+    }
+  end
+
+  def getbyte(idx)
+    string_bytes = bytes
+    idx = ::Opal.coerce_to!(idx, ::Integer, :to_int)
+    return if string_bytes.length < idx
+
+    string_bytes[idx]
+  end
+
+  def initialize_copy(other)
+    %{
+      self.encoding = other.encoding;
+      self.internal_encoding = other.internal_encoding;
+    }
+  end
+
+  def length
+    `self.length`
+  end
+
+  alias size length
+
+  # stub
+  def valid_encoding?
+    true
+  end
+end
+
+::Encoding.default_external = __ENCODING__
diff --git a/opal/corelib/string/unpack.rb b/opal/corelib/string/unpack.rb
new file mode 100644
index 00000000..c34b3492
--- /dev/null
+++ b/opal/corelib/string/unpack.rb
@@ -0,0 +1,769 @@
+require 'base64'
+require 'corelib/pack_unpack/format_string_parser'
+
+class ::String
+  %x{
+    // Format Parser
+    var eachDirectiveAndCount = Opal.PackUnpack.eachDirectiveAndCount;
+
+    function flattenArray(callback) {
+      return function(data) {
+        var array = callback(data);
+        return #{`array`.flatten};
+      }
+    }
+
+    function mapChunksToWords(callback) {
+      return function(data) {
+        var chunks = callback(data);
+
+        return chunks.map(function(chunk) {
+          return chunk.reverse().reduce(function(result, singleByte) {
+            return result * 256 + singleByte;
+          }, 0);
+        });
+      }
+    }
+
+    function chunkBy(chunkSize, callback) {
+      return function(data) {
+        var array = callback(data),
+            chunks = [],
+            chunksCount = (array.length / chunkSize);
+
+        for (var i = 0; i < chunksCount; i++) {
+          var chunk = array.splice(0, chunkSize);
+          if (chunk.length === chunkSize) {
+            chunks.push(chunk);
+          }
+        }
+
+        return chunks;
+      }
+    }
+
+    function toNByteSigned(bytesCount, callback) {
+      return function(data) {
+        var unsignedBits = callback(data),
+            bitsCount = bytesCount * 8,
+            limit = Math.pow(2, bitsCount);
+
+        return unsignedBits.map(function(n) {
+          if (n >= limit / 2) {
+            n -= limit;
+          }
+
+          return n;
+        });
+      }
+    }
+
+    function bytesToAsciiChars(callback) {
+      return function(data) {
+        var bytes = callback(data);
+
+        return bytes.map(function(singleByte) {
+          return String.fromCharCode(singleByte);
+        });
+      }
+    }
+
+    function joinChars(callback) {
+      return function(data) {
+        var chars = callback(data);
+        return chars.join('');
+      }
+    }
+
+    function wrapIntoArray(callback) {
+      return function(data) {
+        var object = callback(data);
+        return [object];
+      }
+    }
+
+    function filterTrailingChars(chars) {
+      var charCodesToFilter = chars.map(function(s) { return s.charCodeAt(0); });
+
+      return function(callback) {
+        return function(data) {
+          var charCodes = callback(data);
+
+          while (charCodesToFilter.indexOf(charCodes[charCodes.length - 1]) !== -1) {
+            charCodes = charCodes.slice(0, charCodes.length - 1);
+          }
+
+          return charCodes;
+        }
+      }
+    }
+
+    var filterTrailingZerosAndSpaces = filterTrailingChars(["\u0000", " "]);
+
+    function invertChunks(callback) {
+      return function(data) {
+        var chunks = callback(data);
+
+        return chunks.map(function(chunk) {
+          return chunk.reverse();
+        });
+      }
+    }
+
+    function uudecode(callback) {
+      return function(data) {
+        var bytes = callback(data);
+
+        var stop = false;
+        var i = 0, length = 0;
+
+        var result = [];
+
+        do {
+          if (i < bytes.length) {
+            var n = bytes[i] - 32 & 0x3F;
+
+            ++i;
+
+            if (bytes[i] === 10) {
+              continue;
+            }
+
+            if (n > 45) {
+              return '';
+            }
+
+            length += n;
+
+            while (n > 0) {
+              var c1 = bytes[i];
+              var c2 = bytes[i + 1];
+              var c3 = bytes[i + 2];
+              var c4 = bytes[i + 3];
+
+              var b1 = (c1 - 32 & 0x3F) << 2 | (c2 - 32 & 0x3F) >> 4;
+              var b2 = (c2 - 32 & 0x3F) << 4 | (c3 - 32 & 0x3F) >> 2;
+              var b3 = (c3 - 32 & 0x3F) << 6 | c4 - 32 & 0x3F;
+
+              result.push(b1 & 0xFF);
+              result.push(b2 & 0xFF);
+              result.push(b3 & 0xFF);
+
+              i += 4;
+              n -= 3;
+            }
+
+            ++i;
+          } else {
+            break;
+          }
+        } while (true);
+
+        return result.slice(0, length);
+      }
+    }
+
+    function toBits(callback) {
+      return function(data) {
+        var bytes = callback(data);
+
+        var bits = bytes.map(function(singleByte) {
+          return singleByte.toString(2);
+        });
+
+        return bits;
+      }
+    }
+
+    function decodeBERCompressedIntegers(callback) {
+      return function(data) {
+        var bytes = callback(data), result = [], buffer = '';
+
+        for (var i = 0; i < bytes.length; i++) {
+          var singleByte = bytes[i],
+              bits = singleByte.toString(2);
+
+          bits = Array(8 - bits.length + 1).join('0').concat(bits);
+
+          var firstBit = bits[0];
+          bits = bits.slice(1, bits.length);
+
+          buffer = buffer.concat(bits);
+
+          if (firstBit === '0') {
+            var decoded = parseInt(buffer, 2);
+            result.push(decoded);
+            buffer = ''
+          }
+        }
+
+        return result;
+      }
+    }
+
+    function base64Decode(callback) {
+      return function(data) {
+        return #{Base64.decode64(`callback(data)`)};
+      }
+    }
+
+    // quoted-printable decode
+    function qpdecode(callback) {
+      return function(data) {
+        var string = callback(data);
+
+        return string
+          .replace(/[\t\x20]$/gm, '')
+          .replace(/=(?:\r\n?|\n|$)/g, '')
+          .replace(/=([a-fA-F0-9]{2})/g, function($0, $1) {
+            var codePoint = parseInt($1, 16);
+            return String.fromCharCode(codePoint);
+          });
+      }
+    }
+
+    function identityFunction(value) { return value; }
+
+    var handlers = {
+      // Integer
+      'C': identityFunction,
+      'S': mapChunksToWords(chunkBy(2, identityFunction)),
+      'L': mapChunksToWords(chunkBy(4, identityFunction)),
+      'Q': mapChunksToWords(chunkBy(8, identityFunction)),
+      'J': null,
+
+      'S>': mapChunksToWords(invertChunks(chunkBy(2, identityFunction))),
+      'L>': mapChunksToWords(invertChunks(chunkBy(4, identityFunction))),
+      'Q>': mapChunksToWords(invertChunks(chunkBy(8, identityFunction))),
+
+      'c': toNByteSigned(1, identityFunction),
+      's': toNByteSigned(2, mapChunksToWords(chunkBy(2, identityFunction))),
+      'l': toNByteSigned(4, mapChunksToWords(chunkBy(4, identityFunction))),
+      'q': toNByteSigned(8, mapChunksToWords(chunkBy(8, identityFunction))),
+      'j': null,
+
+      's>': toNByteSigned(2, mapChunksToWords(invertChunks(chunkBy(2, identityFunction)))),
+      'l>': toNByteSigned(4, mapChunksToWords(invertChunks(chunkBy(4, identityFunction)))),
+      'q>': toNByteSigned(8, mapChunksToWords(invertChunks(chunkBy(8, identityFunction)))),
+
+      'n': null, // aliased later
+      'N': null, // aliased later
+      'v': null, // aliased later
+      'V': null, // aliased later
+
+      'U': identityFunction,
+      'w': decodeBERCompressedIntegers(identityFunction),
+
+      // Float
+      'D': null,
+      'd': null,
+      'F': null,
+      'f': null,
+      'E': null,
+      'e': null,
+      'G': null,
+      'g': null,
+
+      // String
+      'A': wrapIntoArray(joinChars(bytesToAsciiChars(filterTrailingZerosAndSpaces(identityFunction)))),
+      'a': wrapIntoArray(joinChars(bytesToAsciiChars(identityFunction))),
+      'Z': joinChars(bytesToAsciiChars(identityFunction)),
+      'B': joinChars(identityFunction),
+      'b': joinChars(identityFunction),
+      'H': joinChars(identityFunction),
+      'h': joinChars(identityFunction),
+      'u': joinChars(bytesToAsciiChars(uudecode(identityFunction))),
+      'M': qpdecode(joinChars(bytesToAsciiChars(identityFunction))),
+      'm': base64Decode(joinChars(bytesToAsciiChars(identityFunction))),
+
+      'P': null,
+      'p': null
+    };
+
+    function readBytes(n) {
+      return function(bytes) {
+        var chunk = bytes.slice(0, n);
+        bytes = bytes.slice(n, bytes.length);
+        return { chunk: chunk, rest: bytes };
+      }
+    }
+
+    function readUnicodeCharChunk(bytes) {
+      var currentByteIndex = 0;
+      var bytesLength = bytes.length;
+      function readByte() {
+        var result = bytes[currentByteIndex++];
+        bytesLength = bytes.length - currentByteIndex;
+        return result;
+      }
+
+      var c = readByte(), extraLength;
+
+      if (c >> 7 == 0) {
+        // 0xxx xxxx
+        return { chunk: [c], rest: bytes.slice(currentByteIndex) };
+      }
+
+      if (c >> 6 == 0x02) {
+        #{::Kernel.raise ::ArgumentError, 'malformed UTF-8 character'}
+      }
+
+      if (c >> 5 == 0x06) {
+        // 110x xxxx (two bytes)
+        extraLength = 1;
+      } else if (c >> 4 == 0x0e) {
+        // 1110 xxxx (three bytes)
+        extraLength = 2;
+      } else if (c >> 3 == 0x1e) {
+        // 1111 0xxx (four bytes)
+        extraLength = 3;
+      } else if (c >> 2 == 0x3e) {
+        // 1111 10xx (five bytes)
+        extraLength = 4;
+      } else if (c >> 1 == 0x7e) {
+        // 1111 110x (six bytes)
+        extraLength = 5;
+      } else {
+        #{::Kernel.raise 'malformed UTF-8 character'}
+      }
+
+      if (extraLength > bytesLength) {
+        #{
+          expected = `extraLength + 1`
+          given = `bytesLength + 1`
+          ::Kernel.raise ::ArgumentError, "malformed UTF-8 character (expected #{expected} bytes, given #{given} bytes)"
+        }
+      }
+
+      // Remove the UTF-8 prefix from the char
+      var mask = (1 << (8 - extraLength - 1)) - 1,
+          result = c & mask;
+
+      for (var i = 0; i < extraLength; i++) {
+        c = readByte();
+
+        if (c >> 6 != 0x02) {
+          #{::Kernel.raise 'Invalid multibyte sequence'}
+        }
+
+        result = (result << 6) | (c & 0x3f);
+      }
+
+      if (result <= 0xffff) {
+        return { chunk: [result], rest: bytes.slice(currentByteIndex) };
+      } else {
+        result -= 0x10000;
+        var high = ((result >> 10) & 0x3ff) + 0xd800,
+            low = (result & 0x3ff) + 0xdc00;
+        return { chunk: [high, low], rest: bytes.slice(currentByteIndex) };
+      }
+    }
+
+    function readUuencodingChunk(buffer) {
+      var length = buffer.indexOf(32); // 32 = space
+
+      if (length === -1) {
+        return { chunk: buffer, rest: [] };
+      } else {
+        return { chunk: buffer.slice(0, length), rest: buffer.slice(length, buffer.length) };
+      }
+    }
+
+    function readNBitsLSBFirst(buffer, count) {
+      var result = '';
+
+      while (count > 0 && buffer.length > 0) {
+        var singleByte = buffer[0],
+            bitsToTake = Math.min(count, 8),
+            bytesToTake = Math.ceil(bitsToTake / 8);
+
+        buffer = buffer.slice(1, buffer.length);
+
+        if (singleByte != null) {
+          var bits = singleByte.toString(2);
+          bits = Array(8 - bits.length + 1).join('0').concat(bits).split('').reverse().join('');
+
+          for (var j = 0; j < bitsToTake; j++) {
+            result += bits[j] || '0';
+            count--;
+          }
+        }
+      }
+
+      return { chunk: [result], rest: buffer };
+    }
+
+    function readNBitsMSBFirst(buffer, count) {
+      var result = '';
+
+      while (count > 0 && buffer.length > 0) {
+        var singleByte = buffer[0],
+            bitsToTake = Math.min(count, 8),
+            bytesToTake = Math.ceil(bitsToTake / 8);
+
+        buffer = buffer.slice(1, buffer.length);
+
+        if (singleByte != null) {
+          var bits = singleByte.toString(2);
+          bits = Array(8 - bits.length + 1).join('0').concat(bits);
+
+          for (var j = 0; j < bitsToTake; j++) {
+            result += bits[j] || '0';
+            count--;
+          }
+        }
+      }
+
+      return { chunk: [result], rest: buffer };
+    }
+
+    function readWhileFirstBitIsOne(buffer) {
+      var result = [];
+
+      for (var i = 0; i < buffer.length; i++) {
+        var singleByte = buffer[i];
+
+        result.push(singleByte);
+
+        if ((singleByte & 128) === 0) {
+          break;
+        }
+      }
+
+      return { chunk: result, rest: buffer.slice(result.length, buffer.length) };
+    }
+
+    function readTillNullCharacter(buffer, count) {
+      var result = [];
+
+      for (var i = 0; i < count && i < buffer.length; i++) {
+        var singleByte = buffer[i];
+
+        if (singleByte === 0) {
+          break;
+        } else {
+          result.push(singleByte);
+        }
+      }
+
+      if (count === Infinity) {
+        count = result.length;
+      }
+
+      if (buffer[count] === 0) {
+        count++;
+      }
+
+      buffer = buffer.slice(count, buffer.length);
+
+      return { chunk: result, rest: buffer };
+    }
+
+    function readHexCharsHighNibbleFirst(buffer, count) {
+      var result = [];
+
+      while (count > 0 && buffer.length > 0) {
+        var singleByte = buffer[0],
+            hex = singleByte.toString(16);
+
+        buffer = buffer.slice(1, buffer.length);
+        hex = Array(2 - hex.length + 1).join('0').concat(hex);
+
+        if (count === 1) {
+          result.push(hex[0]);
+          count--;
+        } else {
+          result.push(hex[0], hex[1]);
+          count -= 2;
+        }
+      }
+
+      return { chunk: result, rest: buffer };
+    }
+
+    function readHexCharsLowNibbleFirst(buffer, count) {
+      var result = [];
+
+      while (count > 0 && buffer.length > 0) {
+        var singleByte = buffer[0],
+            hex = singleByte.toString(16);
+
+        buffer = buffer.slice(1, buffer.length);
+        hex = Array(2 - hex.length + 1).join('0').concat(hex);
+
+        if (count === 1) {
+          result.push(hex[1]);
+          count--;
+        } else {
+          result.push(hex[1], hex[0]);
+          count -= 2;
+        }
+      }
+
+      return { chunk: result, rest: buffer };
+    }
+
+    function readNTimesAndMerge(callback) {
+      return function(buffer, count) {
+        var chunk = [], chunkData;
+
+        if (count === Infinity) {
+          while (buffer.length > 0) {
+            chunkData = callback(buffer);
+            buffer = chunkData.rest;
+            chunk = chunk.concat(chunkData.chunk);
+          }
+        } else {
+          for (var i = 0; i < count; i++) {
+            chunkData = callback(buffer);
+            buffer = chunkData.rest;
+            chunk = chunk.concat(chunkData.chunk);
+          }
+        }
+
+        return { chunk: chunk, rest: buffer };
+      }
+    }
+
+    function readAll(buffer, count) {
+      return { chunk: buffer, rest: [] };
+    }
+
+    var readChunk = {
+      // Integer
+      'C': readNTimesAndMerge(readBytes(1)),
+      'S': readNTimesAndMerge(readBytes(2)),
+      'L': readNTimesAndMerge(readBytes(4)),
+      'Q': readNTimesAndMerge(readBytes(8)),
+      'J': null,
+
+      'S>': readNTimesAndMerge(readBytes(2)),
+      'L>': readNTimesAndMerge(readBytes(4)),
+      'Q>': readNTimesAndMerge(readBytes(8)),
+
+      'c': readNTimesAndMerge(readBytes(1)),
+      's': readNTimesAndMerge(readBytes(2)),
+      'l': readNTimesAndMerge(readBytes(4)),
+      'q': readNTimesAndMerge(readBytes(8)),
+      'j': null,
+
+      's>': readNTimesAndMerge(readBytes(2)),
+      'l>': readNTimesAndMerge(readBytes(4)),
+      'q>': readNTimesAndMerge(readBytes(8)),
+
+      'n': null, // aliased later
+      'N': null, // aliased later
+      'v': null, // aliased later
+      'V': null, // aliased later
+
+      'U': readNTimesAndMerge(readUnicodeCharChunk),
+      'w': readNTimesAndMerge(readWhileFirstBitIsOne),
+
+      // Float
+      'D': null,
+      'd': null,
+      'F': null,
+      'f': null,
+      'E': null,
+      'e': null,
+      'G': null,
+      'g': null,
+
+      // String
+      'A': readNTimesAndMerge(readBytes(1)),
+      'a': readNTimesAndMerge(readBytes(1)),
+      'Z': readTillNullCharacter,
+      'B': readNBitsMSBFirst,
+      'b': readNBitsLSBFirst,
+      'H': readHexCharsHighNibbleFirst,
+      'h': readHexCharsLowNibbleFirst,
+      'u': readNTimesAndMerge(readUuencodingChunk),
+      'M': readAll,
+      'm': readAll,
+
+      'P': null,
+      'p': null
+    }
+
+    var autocompletion = {
+      // Integer
+      'C': true,
+      'S': true,
+      'L': true,
+      'Q': true,
+      'J': null,
+
+      'S>': true,
+      'L>': true,
+      'Q>': true,
+
+      'c': true,
+      's': true,
+      'l': true,
+      'q': true,
+      'j': null,
+
+      's>': true,
+      'l>': true,
+      'q>': true,
+
+      'n': null, // aliased later
+      'N': null, // aliased later
+      'v': null, // aliased later
+      'V': null, // aliased later
+
+      'U': false,
+      'w': false,
+
+      // Float
+      'D': null,
+      'd': null,
+      'F': null,
+      'f': null,
+      'E': null,
+      'e': null,
+      'G': null,
+      'g': null,
+
+      // String
+      'A': false,
+      'a': false,
+      'Z': false,
+      'B': false,
+      'b': false,
+      'H': false,
+      'h': false,
+      'u': false,
+      'M': false,
+      'm': false,
+
+      'P': null,
+      'p': null
+    }
+
+    var optimized = {
+      'C*': handlers['C'],
+      'c*': handlers['c'],
+      'A*': handlers['A'],
+      'a*': handlers['a'],
+      'M*': wrapIntoArray(handlers['M']),
+      'm*': wrapIntoArray(handlers['m']),
+      'S*': handlers['S'],
+      's*': handlers['s'],
+      'L*': handlers['L'],
+      'l*': handlers['l'],
+      'Q*': handlers['Q'],
+      'q*': handlers['q'],
+      'S>*': handlers['S>'],
+      's>*': handlers['s>'],
+      'L>*': handlers['L>'],
+      'l>*': handlers['l>'],
+      'Q>*': handlers['Q>'],
+      'q>*': handlers['q>']
+    }
+
+    function alias(existingDirective, newDirective) {
+      readChunk[newDirective] = readChunk[existingDirective];
+      handlers[newDirective] = handlers[existingDirective];
+      autocompletion[newDirective] = autocompletion[existingDirective];
+    }
+
+    alias('S>', 'n');
+    alias('L>', 'N');
+
+    alias('S', 'v');
+    alias('L', 'V');
+  }
+
+  def unpack(format, offset: 0)
+    ::Kernel.raise ::ArgumentError, "offset can't be negative" if offset < 0
+    format = ::Opal.coerce_to!(format, ::String, :to_str).gsub(/\s/, '').delete("\000")
+
+    %x{
+      var output = [];
+
+      // A very optimized handler for U*.
+      if (format == "U*" &&
+          self.internal_encoding.name === "UTF-8" &&
+          typeof self.codePointAt === "function") {
+
+        var cp, j = 0;
+
+        output = new Array(self.length);
+        for (var i = offset; i < self.length; i++) {
+          cp = output[j++] = self.codePointAt(i);
+          if (cp > 0xffff) i++;
+        }
+        return output.slice(0, j);
+      }
+
+      var buffer = self.$bytes();
+
+      #{::Kernel.raise ::ArgumentError, 'offset outside of string' if offset > `buffer`.length}
+
+      buffer = buffer.slice(offset);
+
+
+      // optimization
+      var optimizedHandler = optimized[format];
+      if (optimizedHandler) {
+        return optimizedHandler(buffer);
+      }
+
+      function autocomplete(array, size) {
+        while (array.length < size) {
+          array.push(nil);
+        }
+
+        return array;
+      }
+
+      function processChunk(directive, count) {
+        var chunk,
+            chunkReader = readChunk[directive];
+
+        if (chunkReader == null) {
+          #{::Kernel.raise "Unsupported unpack directive #{`directive`.inspect} (no chunk reader defined)"}
+        }
+
+        var chunkData = chunkReader(buffer, count);
+        chunk = chunkData.chunk;
+        buffer = chunkData.rest;
+
+        var handler = handlers[directive];
+
+        if (handler == null) {
+          #{::Kernel.raise "Unsupported unpack directive #{`directive`.inspect} (no handler defined)"}
+        }
+
+        return handler(chunk);
+      }
+
+      eachDirectiveAndCount(format, function(directive, count) {
+        var part = processChunk(directive, count);
+
+        if (count !== Infinity) {
+          var shouldAutocomplete = autocompletion[directive];
+
+          if (shouldAutocomplete == null) {
+            #{::Kernel.raise "Unsupported unpack directive #{`directive`.inspect} (no autocompletion rule defined)"}
+          }
+
+          if (shouldAutocomplete) {
+            autocomplete(part, count);
+          }
+        }
+
+        output = output.concat(part);
+      });
+
+      return output;
+    }
+  end
+
+  def unpack1(format, offset: 0)
+    format = ::Opal.coerce_to!(format, ::String, :to_str).gsub(/\s/, '').delete("\000")
+
+    unpack(format[0], offset: offset)[0]
+  end
+end
diff --git a/opal/corelib/struct.rb b/opal/corelib/struct.rb
new file mode 100644
index 00000000..d619b662
--- /dev/null
+++ b/opal/corelib/struct.rb
@@ -0,0 +1,332 @@
+require 'corelib/enumerable'
+
+class ::Struct
+  include ::Enumerable
+
+  def self.new(const_name, *args, keyword_init: false, &block)
+    if const_name
+      if const_name.class == ::String && const_name[0].upcase != const_name[0]
+        # Fast track so that we skip needlessly going thru exceptions
+        # in most cases.
+        args.unshift(const_name)
+        const_name = nil
+      else
+        begin
+          const_name = ::Opal.const_name!(const_name)
+        rescue ::TypeError, ::NameError
+          args.unshift(const_name)
+          const_name = nil
+        end
+      end
+    end
+
+    args.map do |arg|
+      ::Opal.coerce_to!(arg, ::String, :to_str)
+    end
+
+    klass = ::Class.new(self) do
+      args.each { |arg| define_struct_attribute(arg) }
+
+      class << self
+        def new(*args)
+          instance = allocate
+          `#{instance}.$$data = {}`
+          instance.initialize(*args)
+          instance
+        end
+
+        alias_method :[], :new
+      end
+    end
+
+    klass.module_eval(&block) if block
+    `klass.$$keyword_init = keyword_init`
+
+    if const_name
+      ::Struct.const_set(const_name, klass)
+    end
+
+    klass
+  end
+
+  def self.define_struct_attribute(name)
+    if self == ::Struct
+      ::Kernel.raise ::ArgumentError, 'you cannot define attributes to the Struct class'
+    end
+
+    members << name
+
+    define_method name do
+      `self.$$data[name]`
+    end
+
+    define_method "#{name}=" do |value|
+      `self.$$data[name] = value`
+    end
+  end
+
+  def self.members
+    if self == ::Struct
+      ::Kernel.raise ::ArgumentError, 'the Struct class has no members'
+    end
+
+    @members ||= []
+  end
+
+  def self.inherited(klass)
+    members = @members
+
+    klass.instance_eval do
+      @members = members
+    end
+  end
+
+  def initialize(*args)
+    if `#{self.class}.$$keyword_init`
+      kwargs = args.last || {}
+
+      if args.length > 1 || `(args.length === 1 && !kwargs.$$is_hash)`
+        ::Kernel.raise ::ArgumentError, "wrong number of arguments (given #{args.length}, expected 0)"
+      end
+
+      extra = kwargs.keys - self.class.members
+      if extra.any?
+        ::Kernel.raise ::ArgumentError, "unknown keywords: #{extra.join(', ')}"
+      end
+
+      self.class.members.each do |name|
+        self[name] = kwargs[name]
+      end
+    else
+      if args.length > self.class.members.length
+        ::Kernel.raise ::ArgumentError, 'struct size differs'
+      end
+
+      self.class.members.each_with_index do |name, index|
+        self[name] = args[index]
+      end
+    end
+  end
+
+  def initialize_copy(from)
+    %x{
+      self.$$data = {}
+      var keys = Object.keys(from.$$data), i, max, name;
+      for (i = 0, max = keys.length; i < max; i++) {
+        name = keys[i];
+        self.$$data[name] = from.$$data[name];
+      }
+    }
+  end
+
+  def self.keyword_init?
+    `self.$$keyword_init`
+  end
+
+  def members
+    self.class.members
+  end
+
+  def hash
+    Hash.new(`self.$$data`).hash
+  end
+
+  def [](name)
+    if ::Integer === name
+      ::Kernel.raise ::IndexError, "offset #{name} too small for struct(size:#{self.class.members.size})" if name < -self.class.members.size
+      ::Kernel.raise ::IndexError, "offset #{name} too large for struct(size:#{self.class.members.size})" if name >= self.class.members.size
+
+      name = self.class.members[name]
+    elsif ::String === name
+      %x{
+        if(!self.$$data.hasOwnProperty(name)) {
+          #{::Kernel.raise ::NameError.new("no member '#{name}' in struct", name)}
+        }
+      }
+    else
+      ::Kernel.raise ::TypeError, "no implicit conversion of #{name.class} into Integer"
+    end
+
+    name = ::Opal.coerce_to!(name, ::String, :to_str)
+    `self.$$data[name]`
+  end
+
+  def []=(name, value)
+    if ::Integer === name
+      ::Kernel.raise ::IndexError, "offset #{name} too small for struct(size:#{self.class.members.size})" if name < -self.class.members.size
+      ::Kernel.raise ::IndexError, "offset #{name} too large for struct(size:#{self.class.members.size})" if name >= self.class.members.size
+
+      name = self.class.members[name]
+    elsif ::String === name
+      ::Kernel.raise ::NameError.new("no member '#{name}' in struct", name) unless self.class.members.include?(name.to_sym)
+    else
+      ::Kernel.raise ::TypeError, "no implicit conversion of #{name.class} into Integer"
+    end
+
+    name = ::Opal.coerce_to!(name, ::String, :to_str)
+    `self.$$data[name] = value`
+  end
+
+  def ==(other)
+    return false unless other.instance_of?(self.class)
+
+    %x{
+      var recursed1 = {}, recursed2 = {};
+
+      function _eqeq(struct, other) {
+        var key, a, b;
+
+        recursed1[#{`struct`.__id__}] = true;
+        recursed2[#{`other`.__id__}] = true;
+
+        for (key in struct.$$data) {
+          a = struct.$$data[key];
+          b = other.$$data[key];
+
+          if (#{::Struct === `a`}) {
+            if (!recursed1.hasOwnProperty(#{`a`.__id__}) || !recursed2.hasOwnProperty(#{`b`.__id__})) {
+              if (!_eqeq(a, b)) {
+                return false;
+              }
+            }
+          } else {
+            if (!#{`a` == `b`}) {
+              return false;
+            }
+          }
+        }
+
+        return true;
+      }
+
+      return _eqeq(self, other);
+    }
+  end
+
+  def eql?(other)
+    return false unless other.instance_of?(self.class)
+
+    %x{
+      var recursed1 = {}, recursed2 = {};
+
+      function _eqeq(struct, other) {
+        var key, a, b;
+
+        recursed1[#{`struct`.__id__}] = true;
+        recursed2[#{`other`.__id__}] = true;
+
+        for (key in struct.$$data) {
+          a = struct.$$data[key];
+          b = other.$$data[key];
+
+          if (#{::Struct === `a`}) {
+            if (!recursed1.hasOwnProperty(#{`a`.__id__}) || !recursed2.hasOwnProperty(#{`b`.__id__})) {
+              if (!_eqeq(a, b)) {
+                return false;
+              }
+            }
+          } else {
+            if (!#{`a`.eql?(`b`)}) {
+              return false;
+            }
+          }
+        }
+
+        return true;
+      }
+
+      return _eqeq(self, other);
+    }
+  end
+
+  def each
+    return enum_for(:each) { size } unless block_given?
+
+    self.class.members.each { |name| yield self[name] }
+    self
+  end
+
+  def each_pair
+    return enum_for(:each_pair) { size } unless block_given?
+
+    self.class.members.each { |name| yield [name, self[name]] }
+    self
+  end
+
+  def length
+    self.class.members.length
+  end
+
+  def to_a
+    self.class.members.map { |name| self[name] }
+  end
+
+  `var inspect_stack = []`
+
+  def inspect
+    result = '#<struct '
+
+    if `inspect_stack`.include? __id__
+      result + ':...>'
+    else
+      `inspect_stack` << __id__
+      pushed = true
+
+      if ::Struct === self && self.class.name
+        result += "#{self.class} "
+      end
+
+      result += each_pair.map do |name, value|
+        "#{name}=#{Opal.inspect(value)}"
+      end.join ', '
+
+      result += '>'
+
+      result
+    end
+  ensure
+    `inspect_stack.pop()` if pushed
+  end
+
+  def to_h(&block)
+    return map(&block).to_h(*args) if block_given?
+
+    self.class.members.each_with_object({}) { |name, h| h[name] = self[name] }
+  end
+
+  def values_at(*args)
+    args = args.map { |arg| `arg.$$is_range ? #{arg.to_a} : arg` }.flatten
+    %x{
+      var result = [];
+      for (var i = 0, len = args.length; i < len; i++) {
+        if (!args[i].$$is_number) {
+          #{::Kernel.raise ::TypeError, "no implicit conversion of #{`args[i]`.class} into Integer"}
+        }
+        result.push(#{self[`args[i]`]});
+      }
+      return result;
+    }
+  end
+
+  def dig(key, *keys)
+    item = if `key.$$is_string && self.$$data.hasOwnProperty(key)`
+             `self.$$data[key] || nil`
+           end
+
+    %x{
+      if (item === nil || keys.length === 0) {
+        return item;
+      }
+    }
+
+    unless item.respond_to?(:dig)
+      ::Kernel.raise ::TypeError, "#{item.class} does not have #dig method"
+    end
+
+    item.dig(*keys)
+  end
+
+  alias size length
+  alias to_s inspect
+  alias values to_a
+end
diff --git a/opal/corelib/time.rb b/opal/corelib/time.rb
new file mode 100644
index 00000000..2e605220
--- /dev/null
+++ b/opal/corelib/time.rb
@@ -0,0 +1,781 @@
+# helpers: slice
+
+require 'corelib/comparable'
+
+class ::Time < `Date`
+  include ::Comparable
+
+  %x{
+    var days_of_week = #{%w[Sunday Monday Tuesday Wednesday Thursday Friday Saturday Sunday]},
+        short_days   = #{%w[Sun Mon Tue Wed Thu Fri Sat]},
+        short_months = #{%w[Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec]},
+        long_months  = #{%w[January February March April May June July August September October November December]};
+  }
+
+  def self.at(seconds, frac = undefined)
+    %x{
+      var result;
+
+      if (#{::Time === seconds}) {
+        if (frac !== undefined) {
+          #{::Kernel.raise ::TypeError, "can't convert Time into an exact number"}
+        }
+        result = new Date(seconds.getTime());
+        result.timezone = seconds.timezone;
+        return result;
+      }
+
+      if (!seconds.$$is_number) {
+        seconds = #{::Opal.coerce_to!(seconds, ::Integer, :to_int)};
+      }
+
+      if (frac === undefined) {
+        return new Date(seconds * 1000);
+      }
+
+      if (!frac.$$is_number) {
+        frac = #{::Opal.coerce_to!(frac, ::Integer, :to_int)};
+      }
+
+      return new Date(seconds * 1000 + (frac / 1000));
+    }
+  end
+
+  %x{
+    function time_params(year, month, day, hour, min, sec) {
+      if (year.$$is_string) {
+        year = parseInt(year, 10);
+      } else {
+        year = #{::Opal.coerce_to!(`year`, ::Integer, :to_int)};
+      }
+
+      if (month === nil) {
+        month = 1;
+      } else if (!month.$$is_number) {
+        if (#{`month`.respond_to?(:to_str)}) {
+          month = #{`month`.to_str};
+          switch (month.toLowerCase()) {
+          case 'jan': month =  1; break;
+          case 'feb': month =  2; break;
+          case 'mar': month =  3; break;
+          case 'apr': month =  4; break;
+          case 'may': month =  5; break;
+          case 'jun': month =  6; break;
+          case 'jul': month =  7; break;
+          case 'aug': month =  8; break;
+          case 'sep': month =  9; break;
+          case 'oct': month = 10; break;
+          case 'nov': month = 11; break;
+          case 'dec': month = 12; break;
+          default: month = #{`month`.to_i};
+          }
+        } else {
+          month = #{::Opal.coerce_to!(`month`, ::Integer, :to_int)};
+        }
+      }
+
+      if (month < 1 || month > 12) {
+        #{::Kernel.raise ::ArgumentError, "month out of range: #{`month`}"}
+      }
+      month = month - 1;
+
+      if (day === nil) {
+        day = 1;
+      } else if (day.$$is_string) {
+        day = parseInt(day, 10);
+      } else {
+        day = #{::Opal.coerce_to!(`day`, ::Integer, :to_int)};
+      }
+
+      if (day < 1 || day > 31) {
+        #{::Kernel.raise ::ArgumentError, "day out of range: #{`day`}"}
+      }
+
+      if (hour === nil) {
+        hour = 0;
+      } else if (hour.$$is_string) {
+        hour = parseInt(hour, 10);
+      } else {
+        hour = #{::Opal.coerce_to!(`hour`, ::Integer, :to_int)};
+      }
+
+      if (hour < 0 || hour > 24) {
+        #{::Kernel.raise ::ArgumentError, "hour out of range: #{`hour`}"}
+      }
+
+      if (min === nil) {
+        min = 0;
+      } else if (min.$$is_string) {
+        min = parseInt(min, 10);
+      } else {
+        min = #{::Opal.coerce_to!(`min`, ::Integer, :to_int)};
+      }
+
+      if (min < 0 || min > 59) {
+        #{::Kernel.raise ::ArgumentError, "min out of range: #{`min`}"}
+      }
+
+      if (sec === nil) {
+        sec = 0;
+      } else if (!sec.$$is_number) {
+        if (sec.$$is_string) {
+          sec = parseInt(sec, 10);
+        } else {
+          sec = #{::Opal.coerce_to!(`sec`, ::Integer, :to_int)};
+        }
+      }
+
+      if (sec < 0 || sec > 60) {
+        #{::Kernel.raise ::ArgumentError, "sec out of range: #{`sec`}"}
+      }
+
+      return [year, month, day, hour, min, sec];
+    }
+  }
+
+  def self.new(year = undefined, month = nil, day = nil, hour = nil, min = nil, sec = nil, utc_offset = nil)
+    %x{
+      var args, result, timezone;
+
+      if (year === undefined) {
+        return new Date();
+      }
+
+      args  = time_params(year, month, day, hour, min, sec);
+      year  = args[0];
+      month = args[1];
+      day   = args[2];
+      hour  = args[3];
+      min   = args[4];
+      sec   = args[5];
+
+      result = new Date(year, month, day, hour, min, 0, sec * 1000);
+      if (year < 100) {
+        result.setFullYear(year);
+      }
+
+      if (utc_offset !== nil) {
+        timezone = #{_parse_offset(utc_offset)};
+      }
+
+      if (timezone != null) {
+        result = new Date(result.getTime() - timezone * 3600000 - result.getTimezoneOffset() * 60000);
+        result.timezone = timezone;
+      }
+
+      return result;
+    }
+  end
+
+  # @private
+  def self._parse_offset(utc_offset)
+    %x{
+      var timezone;
+      if (utc_offset.$$is_string) {
+        if (utc_offset == 'UTC') {
+          timezone = 0;
+        }
+        else if(/^[+-]\d\d:[0-5]\d$/.test(utc_offset)) {
+          var sign, hours, minutes;
+          sign = utc_offset[0];
+          hours = +(utc_offset[1] + utc_offset[2]);
+          minutes = +(utc_offset[4] + utc_offset[5]);
+
+          timezone = (sign == '-' ? -1 : 1) * (hours + minutes / 60);
+        }
+        else {
+          // Unsupported: "A".."I","K".."Z"
+          #{::Kernel.raise ::ArgumentError, %'"+HH:MM", "-HH:MM", "UTC" expected for utc_offset: #{utc_offset}'}
+        }
+      }
+      else if (utc_offset.$$is_number) {
+        timezone = utc_offset / 3600;
+      }
+      else {
+        #{::Kernel.raise ::ArgumentError, "Opal doesn't support other types for a timezone argument than Integer and String"}
+      }
+      return timezone;
+    }
+  end
+
+  def self.local(year, month = nil, day = nil, hour = nil, min = nil, sec = nil, millisecond = nil, _dummy1 = nil, _dummy2 = nil, _dummy3 = nil)
+    # The _dummy args are there only because the MRI version accepts up to 10 arguments
+    %x{
+      var args, result;
+
+      if (arguments.length === 10) {
+        args  = $slice.call(arguments);
+        year  = args[5];
+        month = args[4];
+        day   = args[3];
+        hour  = args[2];
+        min   = args[1];
+        sec   = args[0];
+      }
+
+      args  = time_params(year, month, day, hour, min, sec);
+      year  = args[0];
+      month = args[1];
+      day   = args[2];
+      hour  = args[3];
+      min   = args[4];
+      sec   = args[5];
+
+      result = new Date(year, month, day, hour, min, 0, sec * 1000);
+      if (year < 100) {
+        result.setFullYear(year);
+      }
+      return result;
+    }
+  end
+
+  def self.gm(year, month = nil, day = nil, hour = nil, min = nil, sec = nil, millisecond = nil, _dummy1 = nil, _dummy2 = nil, _dummy3 = nil)
+    # The _dummy args are there only because the MRI version accepts up to 10 arguments
+    %x{
+      var args, result;
+
+      if (arguments.length === 10) {
+        args  = $slice.call(arguments);
+        year  = args[5];
+        month = args[4];
+        day   = args[3];
+        hour  = args[2];
+        min   = args[1];
+        sec   = args[0];
+      }
+
+      args  = time_params(year, month, day, hour, min, sec);
+      year  = args[0];
+      month = args[1];
+      day   = args[2];
+      hour  = args[3];
+      min   = args[4];
+      sec   = args[5];
+
+      result = new Date(Date.UTC(year, month, day, hour, min, 0, sec * 1000));
+      if (year < 100) {
+        result.setUTCFullYear(year);
+      }
+      result.timezone = 0;
+      return result;
+    }
+  end
+
+  def self.now
+    new
+  end
+
+  def +(other)
+    if ::Time === other
+      ::Kernel.raise ::TypeError, 'time + time?'
+    end
+
+    %x{
+      if (!other.$$is_number) {
+        other = #{::Opal.coerce_to!(other, ::Integer, :to_int)};
+      }
+      var result = new Date(self.getTime() + (other * 1000));
+      result.timezone = self.timezone;
+      return result;
+    }
+  end
+
+  def -(other)
+    if ::Time === other
+      return `(self.getTime() - other.getTime()) / 1000`
+    end
+
+    %x{
+      if (!other.$$is_number) {
+        other = #{::Opal.coerce_to!(other, ::Integer, :to_int)};
+      }
+      var result = new Date(self.getTime() - (other * 1000));
+      result.timezone = self.timezone;
+      return result;
+    }
+  end
+
+  def <=>(other)
+    if ::Time === other
+      to_f <=> other.to_f
+    else
+      r = other <=> self
+      if r.nil?
+        nil
+      elsif r > 0
+        -1
+      elsif r < 0
+        1
+      else
+        0
+      end
+    end
+  end
+
+  def ==(other)
+    ::Time === other && `#{to_f} === #{other.to_f}`
+  end
+
+  def asctime
+    strftime '%a %b %e %H:%M:%S %Y'
+  end
+
+  [
+    [:year, 'getFullYear', 'getUTCFullYear'],
+    [:mon, 'getMonth', 'getUTCMonth', 1],
+    [:wday, 'getDay', 'getUTCDay'],
+    [:day, 'getDate', 'getUTCDate'],
+    [:hour, 'getHours', 'getUTCHours'],
+    [:min, 'getMinutes', 'getUTCMinutes'],
+    [:sec, 'getSeconds', 'getUTCSeconds'],
+  ].each do |method, getter, utcgetter, difference = 0|
+    define_method method do
+      %x{
+        return difference + ((self.timezone != null) ?
+          (new Date(self.getTime() + self.timezone * 3600000))[utcgetter]() :
+          self[getter]())
+      }
+    end
+  end
+
+  def yday
+    # http://javascript.about.com/library/bldayyear.htm
+    # also see moment.js implementation: http://git.io/vCKNE
+
+    start_of_year = Time.new(year).to_i
+    start_of_day  = Time.new(year, month, day).to_i
+    one_day       = 86_400
+
+    ((start_of_day - start_of_year) / one_day).round + 1
+  end
+
+  def isdst
+    %x{
+      var jan = new Date(self.getFullYear(), 0, 1),
+          jul = new Date(self.getFullYear(), 6, 1);
+      return self.getTimezoneOffset() < Math.max(jan.getTimezoneOffset(), jul.getTimezoneOffset());
+    }
+  end
+
+  def dup
+    copy = `new Date(self.getTime())`
+
+    copy.copy_instance_variables(self)
+    copy.initialize_dup(self)
+
+    copy
+  end
+
+  def eql?(other)
+    other.is_a?(::Time) && (self <=> other).zero?
+  end
+
+  [
+    [:sunday?, 0],
+    [:monday?, 1],
+    [:tuesday?, 2],
+    [:wednesday?, 3],
+    [:thursday?, 4],
+    [:friday?, 5],
+    [:saturday?, 6]
+  ].each do |method, weekday|
+    define_method method do
+      `#{wday} === weekday`
+    end
+  end
+
+  def hash
+    `'Time:' + self.getTime()`
+  end
+
+  def inspect
+    if utc?
+      strftime '%Y-%m-%d %H:%M:%S UTC'
+    else
+      strftime '%Y-%m-%d %H:%M:%S %z'
+    end
+  end
+
+  def succ
+    %x{
+      var result = new Date(self.getTime() + 1000);
+      result.timezone = self.timezone;
+      return result;
+    }
+  end
+
+  def usec
+    `self.getMilliseconds() * 1000`
+  end
+
+  def zone
+    %x{
+      if (self.timezone === 0) return "UTC";
+      else if (self.timezone != null) return nil;
+
+      var string = self.toString(),
+          result;
+
+      if (string.indexOf('(') == -1) {
+        result = string.match(/[A-Z]{3,4}/)[0];
+      }
+      else {
+        result = string.match(/\((.+)\)(?:\s|$)/)[1]
+      }
+
+      if (result == "GMT" && /(GMT\W*\d{4})/.test(string)) {
+        return RegExp.$1;
+      }
+      else {
+        return result;
+      }
+    }
+  end
+
+  def getgm
+    %x{
+      var result = new Date(self.getTime());
+      result.timezone = 0;
+      return result;
+    }
+  end
+
+  def gmtime
+    %x{
+      self.timezone = 0;
+      return self;
+    }
+  end
+
+  def gmt?
+    `self.timezone === 0`
+  end
+
+  def gmt_offset
+    `(self.timezone != null) ? self.timezone * 60 : -self.getTimezoneOffset() * 60`
+  end
+
+  def strftime(format)
+    %x{
+      return format.replace(/%([\-_#^0]*:{0,2})(\d+)?([EO]*)(.)/g, function(full, flags, width, _, conv) {
+        var result = "", jd, c, s,
+            zero   = flags.indexOf('0') !== -1,
+            pad    = flags.indexOf('-') === -1,
+            blank  = flags.indexOf('_') !== -1,
+            upcase = flags.indexOf('^') !== -1,
+            invert = flags.indexOf('#') !== -1,
+            colons = (flags.match(':') || []).length;
+
+        width = parseInt(width, 10);
+
+        if (zero && blank) {
+          if (flags.indexOf('0') < flags.indexOf('_')) {
+            zero = false;
+          }
+          else {
+            blank = false;
+          }
+        }
+
+        switch (conv) {
+          case 'Y':
+            result += #{year};
+            break;
+
+          case 'C':
+            zero    = !blank;
+            result += Math.round(#{year} / 100);
+            break;
+
+          case 'y':
+            zero    = !blank;
+            result += (#{year} % 100);
+            break;
+
+          case 'm':
+            zero    = !blank;
+            result += #{mon};
+            break;
+
+          case 'B':
+            result += long_months[#{mon} - 1];
+            break;
+
+          case 'b':
+          case 'h':
+            blank   = !zero;
+            result += short_months[#{mon} - 1];
+            break;
+
+          case 'd':
+            zero    = !blank
+            result += #{day};
+            break;
+
+          case 'e':
+            blank   = !zero
+            result += #{day};
+            break;
+
+          case 'j':
+            zero    = !blank;
+            width   = isNaN(width) ? 3 : width;
+            result += #{yday};
+            break;
+
+          case 'H':
+            zero    = !blank;
+            result += #{hour};
+            break;
+
+          case 'k':
+            blank   = !zero;
+            result += #{hour};
+            break;
+
+          case 'I':
+            zero    = !blank;
+            result += (#{hour} % 12 || 12);
+            break;
+
+          case 'l':
+            blank   = !zero;
+            result += (#{hour} % 12 || 12);
+            break;
+
+          case 'P':
+            result += (#{hour} >= 12 ? "pm" : "am");
+            break;
+
+          case 'p':
+            result += (#{hour} >= 12 ? "PM" : "AM");
+            break;
+
+          case 'M':
+            zero    = !blank;
+            result += #{min};
+            break;
+
+          case 'S':
+            zero    = !blank;
+            result += #{sec}
+            break;
+
+          case 'L':
+            zero    = !blank;
+            width   = isNaN(width) ? 3 : width;
+            result += self.getMilliseconds();
+            break;
+
+          case 'N':
+            width   = isNaN(width) ? 9 : width;
+            result += #{`self.getMilliseconds().toString()`.rjust(3, '0')};
+            result  = #{`result`.ljust(`width`, '0')};
+            break;
+
+          case 'z':
+            var offset  = (self.timezone == null) ? self.getTimezoneOffset() : (-self.timezone * 60),
+                hours   = Math.floor(Math.abs(offset) / 60),
+                minutes = Math.abs(offset) % 60;
+
+            result += offset < 0 ? "+" : "-";
+            result += hours < 10 ? "0" : "";
+            result += hours;
+
+            if (colons > 0) {
+              result += ":";
+            }
+
+            result += minutes < 10 ? "0" : "";
+            result += minutes;
+
+            if (colons > 1) {
+              result += ":00";
+            }
+
+            break;
+
+          case 'Z':
+            result += #{zone};
+            break;
+
+          case 'A':
+            result += days_of_week[#{wday}];
+            break;
+
+          case 'a':
+            result += short_days[#{wday}];
+            break;
+
+          case 'u':
+            result += (#{wday} + 1);
+            break;
+
+          case 'w':
+            result += #{wday};
+            break;
+
+          case 'V':
+            result += #{cweek_cyear[0].to_s.rjust(2, '0')};
+            break;
+
+          case 'G':
+            result += #{cweek_cyear[1]};
+            break;
+
+          case 'g':
+            result += #{cweek_cyear[1][-2..-1]};
+            break;
+
+          case 's':
+            result += #{to_i};
+            break;
+
+          case 'n':
+            result += "\n";
+            break;
+
+          case 't':
+            result += "\t";
+            break;
+
+          case '%':
+            result += "%";
+            break;
+
+          case 'c':
+            result += #{strftime('%a %b %e %T %Y')};
+            break;
+
+          case 'D':
+          case 'x':
+            result += #{strftime('%m/%d/%y')};
+            break;
+
+          case 'F':
+            result += #{strftime('%Y-%m-%d')};
+            break;
+
+          case 'v':
+            result += #{strftime('%e-%^b-%4Y')};
+            break;
+
+          case 'r':
+            result += #{strftime('%I:%M:%S %p')};
+            break;
+
+          case 'R':
+            result += #{strftime('%H:%M')};
+            break;
+
+          case 'T':
+          case 'X':
+            result += #{strftime('%H:%M:%S')};
+            break;
+
+          // Non-standard: JIS X 0301 date format
+          case 'J':
+            jd = #{to_date.jd};
+            if (jd < 2405160) {
+              result += #{strftime('%Y-%m-%d')};
+              break;
+            }
+            else if (jd < 2419614)
+              c = 'M', s = 1867;
+            else if (jd < 2424875)
+              c = 'T', s = 1911;
+            else if (jd < 2447535)
+              c = 'S', s = 1925;
+            else if (jd < 2458605)
+              c = 'H', s = 1988;
+            else
+              c = 'R', s = 2018;
+
+            result += #{format '%c%02d', `c`, year - `s`};
+            result += #{strftime('-%m-%d')};
+            break;
+
+          default:
+            return full;
+        }
+
+        if (upcase) {
+          result = result.toUpperCase();
+        }
+
+        if (invert) {
+          result = result.replace(/[A-Z]/, function(c) { c.toLowerCase() }).
+                          replace(/[a-z]/, function(c) { c.toUpperCase() });
+        }
+
+        if (pad && (zero || blank)) {
+          result = #{`result`.rjust(`isNaN(width) ? 2 : width`, `blank ? " " : "0"`)};
+        }
+
+        return result;
+      });
+    }
+  end
+
+  def to_a
+    [sec, min, hour, day, month, year, wday, yday, isdst, zone]
+  end
+
+  def to_f
+    `self.getTime() / 1000`
+  end
+
+  def to_i
+    `parseInt(self.getTime() / 1000, 10)`
+  end
+
+  def cweek_cyear
+    jan01 = ::Time.new(year, 1, 1)
+    jan01_wday = jan01.wday
+    first_monday = 0
+    year = self.year
+    if jan01_wday <= 4 && jan01_wday != 0
+      # Jan 01 is in the first week of the year
+      offset = jan01_wday - 1
+    else
+      # Jan 01 is in the last week of the previous year
+      offset = jan01_wday - 7 - 1
+      offset = -1 if offset == -8 # Adjust if Jan 01 is a Sunday
+    end
+
+    week = ((yday + offset) / 7.00).ceil
+
+    if week <= 0
+      # Get the last week of the previous year
+      return ::Time.new(self.year - 1, 12, 31).cweek_cyear
+    elsif week == 53
+      # Find out whether this is actually week 53 or already week 01 of the following year
+      dec31 = ::Time.new(self.year, 12, 31)
+      dec31_wday = dec31.wday
+      if dec31_wday <= 3 && dec31_wday != 0
+        week = 1
+        year += 1
+      end
+    end
+
+    [week, year]
+  end
+
+  class << self
+    alias mktime local
+    alias utc gm
+  end
+
+  alias ctime asctime
+  alias dst? isdst
+  alias getutc getgm
+  alias gmtoff gmt_offset
+  alias mday day
+  alias month mon
+  alias to_s inspect
+  alias tv_sec to_i
+  alias tv_usec usec
+  alias utc gmtime
+  alias utc? gmt?
+  alias utc_offset gmt_offset
+end
diff --git a/opal/corelib/trace_point.rb b/opal/corelib/trace_point.rb
new file mode 100644
index 00000000..2a5487d1
--- /dev/null
+++ b/opal/corelib/trace_point.rb
@@ -0,0 +1,57 @@
+class ::TracePoint
+  # partial implementation of TracePoint
+  # for the moment only supports the :class event
+  def self.trace(event, &block)
+    new(event, &block).enable
+  end
+
+  attr_reader :event
+
+  def initialize(event, &block)
+    ::Kernel.raise 'Only the :class event is supported' unless event == :class
+    @event = event
+    @block = block
+    @trace_object = nil
+    @trace_evt = "trace_#{@event}"
+    @tracers_for_evt = "tracers_for_#{@event}"
+  end
+
+  def enable(*args, &enable_block)
+    previous_state = enabled?
+    %x{
+      Opal[#{@tracers_for_evt}].push(self);
+      Opal[#{@trace_evt}] = true;
+    }
+    if block_given?
+      yield
+      disable
+    end
+    previous_state
+  end
+
+  def enabled?
+    `Opal[#{@trace_evt}] && Opal[#{@tracers_for_evt}].includes(self)`
+  end
+
+  def disable
+    %x{
+      var idx = Opal[#{@tracers_for_evt}].indexOf(self)
+
+      if (idx > -1) {
+        Opal[#{@tracers_for_evt}].splice(idx, 1);
+
+        if (Opal[#{@tracers_for_evt}].length === 0) {
+          Opal[#{@trace_evt}] = false;
+        }
+
+        return true;
+      } else {
+        return false;
+      }
+    }
+  end
+
+  def self
+    @trace_object
+  end
+end
diff --git a/opal/corelib/unsupported.rb b/opal/corelib/unsupported.rb
new file mode 100644
index 00000000..a9f8c5e6
--- /dev/null
+++ b/opal/corelib/unsupported.rb
@@ -0,0 +1,127 @@
+%x{
+  var warnings = {};
+
+  function handle_unsupported_feature(message) {
+    switch (Opal.config.unsupported_features_severity) {
+    case 'error':
+      #{::Kernel.raise ::NotImplementedError, `message`}
+      break;
+    case 'warning':
+      warn(message)
+      break;
+    default: // ignore
+      // noop
+    }
+  }
+
+  function warn(string) {
+    if (warnings[string]) {
+      return;
+    }
+
+    warnings[string] = true;
+    #{warn(`string`)};
+  }
+}
+
+class ::String
+  `var ERROR = "String#%s not supported. Mutable String methods are not supported in Opal."`
+
+  %i[
+    << capitalize! chomp! chop! downcase! gsub! lstrip! next! reverse!
+    slice! squeeze! strip! sub! succ! swapcase! tr! tr_s! upcase! prepend
+    []= clear encode! unicode_normalize!
+  ].each do |method_name|
+    define_method method_name do |*|
+      ::Kernel.raise ::NotImplementedError, `ERROR` % method_name
+    end
+  end
+end
+
+module ::Kernel
+  `var ERROR = "Object freezing is not supported by Opal"`
+
+  def freeze
+    `handle_unsupported_feature(ERROR)`
+    self
+  end
+
+  def frozen?
+    `handle_unsupported_feature(ERROR)`
+    false
+  end
+end
+
+module ::Kernel
+  `var ERROR = "Object tainting is not supported by Opal"`
+
+  def taint
+    `handle_unsupported_feature(ERROR)`
+    self
+  end
+
+  def untaint
+    `handle_unsupported_feature(ERROR)`
+    self
+  end
+
+  def tainted?
+    `handle_unsupported_feature(ERROR)`
+    false
+  end
+end
+
+class ::Module
+  def public(*methods)
+    %x{
+      if (methods.length === 0) {
+        self.$$module_function = false;
+        return nil;
+      }
+      return (methods.length === 1) ? methods[0] : methods;
+    }
+  end
+
+  def private_class_method(*methods)
+    `return (methods.length === 1) ? methods[0] : methods`
+  end
+
+  def private_method_defined?(obj)
+    false
+  end
+
+  def private_constant(*)
+  end
+
+  alias nesting public
+  alias private public
+  alias protected public
+  alias protected_method_defined? private_method_defined?
+  alias public_class_method private_class_method
+  alias public_instance_method instance_method
+  alias public_instance_methods instance_methods
+  alias public_method_defined? method_defined?
+end
+
+module ::Kernel
+  def private_methods(*methods)
+    []
+  end
+
+  alias private_instance_methods private_methods
+end
+
+module ::Kernel
+  def eval(*)
+    ::Kernel.raise ::NotImplementedError, "To use Kernel#eval, you must first require 'opal-parser'. "\
+                                          "See https://github.com/opal/opal/blob/#{RUBY_ENGINE_VERSION}/docs/opal_parser.md for details."
+  end
+end
+
+def self.public(*methods)
+  `return (methods.length === 1) ? methods[0] : methods`
+end
+
+def self.private(*methods)
+  `return (methods.length === 1) ? methods[0] : methods`
+end
diff --git a/opal/corelib/variables.rb b/opal/corelib/variables.rb
new file mode 100644
index 00000000..c05d878e
--- /dev/null
+++ b/opal/corelib/variables.rb
@@ -0,0 +1,18 @@
+# regexp matches
+%x{$gvars['&'] = $gvars['~'] = $gvars['`'] = $gvars["'"] = nil}
+
+# requires
+$LOADED_FEATURES = $" = `Opal.loaded_features`
+$LOAD_PATH       = $: = []
+
+# split lines
+$/ = "\n"
+$, = nil
+
+::ARGV = []
+::ARGF = ::Object.new
+::ENV  = {}
+
+$VERBOSE = false
+$DEBUG   = false
+$SAFE    = 0
diff --git a/opal/master/await.js b/opal/master/await.js
new file mode 100644
index 00000000..b21764b4
--- /dev/null
+++ b/opal/master/await.js
@@ -0,0 +1,629 @@
+Opal.modules["promise/v2"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $klass = Opal.klass, $def = Opal.def, $eqeq = Opal.eqeq, $send = Opal.send, $alias = Opal.alias, $truthy = Opal.truthy, $rb_gt = Opal.rb_gt, $rb_minus = Opal.rb_minus, $to_a = Opal.to_a, $eqeqeq = Opal.eqeqeq, $rb_plus = Opal.rb_plus;
+
+  Opal.add_stubs('instance_variable_set,Array,==,length,first,tap,attr_reader,!=,native?,raise,include?,any?,proc,call,nativity_check!,gen_tracing_proc,<<,there_can_be_only_one!,then,to_proc,fail,always,!,>,value,unshift,-,prev,trace,light_nativity_check!,nil?,resolved?,===,rejected?,map,when,new,rescue,resolve,reject,class,+,object_id,inspect');
+  return (function($base, $super, $parent_nesting) {
+    var self = $klass($base, $super, 'PromiseV2');
+
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
+
+    $proto.type = $proto.next = $proto.realized = $proto.resolve_proc = $proto.reject_proc = $proto.value = nil;
+    
+    (function(self, $parent_nesting) {
+      
+      
+      
+      $def(self, '$allocate', function $$allocate() {
+        var $a, self = this, ok = nil, fail = nil, prom = nil;
+
+        
+        $a = [nil, nil], (ok = $a[0]), (fail = $a[1]), $a;
+        prom = new self.$$constructor(function(_ok, _fail) { ok = _ok; fail = _fail; });
+        prom.$instance_variable_set("@type", "opal");
+        prom.$instance_variable_set("@resolve_proc", ok);
+        prom.$instance_variable_set("@reject_proc", fail);
+        return prom;
+      }, 0);
+      
+      $def(self, '$when', function $$when($a) {
+        var $post_args, promises, self = this;
+
+        
+        
+        $post_args = Opal.slice.call(arguments);
+        
+        promises = $post_args;;
+        promises = self.$Array(($eqeq(promises.$length(), 1) ? (promises.$first()) : (promises)));
+        return $send((Promise.all(promises)), 'tap', [], function $$1(prom){
+          
+          
+          if (prom == null) prom = nil;;
+          return prom.$instance_variable_set("@type", "when");}, 1);
+      }, -1);
+      
+      $def(self, '$all_resolved', function $$all_resolved($a) {
+        var $post_args, promises, self = this;
+
+        
+        
+        $post_args = Opal.slice.call(arguments);
+        
+        promises = $post_args;;
+        promises = self.$Array(($eqeq(promises.$length(), 1) ? (promises.$first()) : (promises)));
+        return $send((Promise.allResolved(promises)), 'tap', [], function $$2(prom){
+          
+          
+          if (prom == null) prom = nil;;
+          return prom.$instance_variable_set("@type", "all_resolved");}, 1);
+      }, -1);
+      
+      $def(self, '$any', function $$any($a) {
+        var $post_args, promises, self = this;
+
+        
+        
+        $post_args = Opal.slice.call(arguments);
+        
+        promises = $post_args;;
+        promises = self.$Array(($eqeq(promises.$length(), 1) ? (promises.$first()) : (promises)));
+        return $send((Promise.any(promises)), 'tap', [], function $$3(prom){
+          
+          
+          if (prom == null) prom = nil;;
+          return prom.$instance_variable_set("@type", "any");}, 1);
+      }, -1);
+      
+      $def(self, '$race', function $$race($a) {
+        var $post_args, promises, self = this;
+
+        
+        
+        $post_args = Opal.slice.call(arguments);
+        
+        promises = $post_args;;
+        promises = self.$Array(($eqeq(promises.$length(), 1) ? (promises.$first()) : (promises)));
+        return $send((Promise.race(promises)), 'tap', [], function $$4(prom){
+          
+          
+          if (prom == null) prom = nil;;
+          return prom.$instance_variable_set("@type", "race");}, 1);
+      }, -1);
+      
+      $def(self, '$resolve', function $$resolve(value) {
+        
+        
+        
+        if (value == null) value = nil;;
+        return $send((Promise.resolve(value)), 'tap', [], function $$5(prom){
+          
+          
+          if (prom == null) prom = nil;;
+          prom.$instance_variable_set("@type", "resolve");
+          prom.$instance_variable_set("@realized", "resolve");
+          return prom.$instance_variable_set("@value", value);}, 1);
+      }, -1);
+      
+      $def(self, '$reject', function $$reject(value) {
+        
+        
+        
+        if (value == null) value = nil;;
+        return $send((Promise.reject(value)), 'tap', [], function $$6(prom){
+          
+          
+          if (prom == null) prom = nil;;
+          prom.$instance_variable_set("@type", "reject");
+          prom.$instance_variable_set("@realized", "reject");
+          return prom.$instance_variable_set("@value", value);}, 1);
+      }, -1);
+      $alias(self, "all", "when");
+      $alias(self, "error", "reject");
+      return $alias(self, "value", "resolve");
+    })(Opal.get_singleton_class(self), $nesting);
+    self.$attr_reader("prev", "next");
+    
+    $def(self, '$native?', function $PromiseV2_native$ques$7() {
+      var self = this;
+
+      return self.type['$!=']("opal")
+    }, 0);
+    
+    $def(self, '$nativity_check!', function $PromiseV2_nativity_check$excl$8() {
+      var self = this;
+
+      if ($truthy(self['$native?']())) {
+        return self.$raise($$('ArgumentError'), "this promise is native to JavaScript")
+      } else {
+        return nil
+      }
+    }, 0);
+    
+    $def(self, '$light_nativity_check!', function $PromiseV2_light_nativity_check$excl$9() {
+      var self = this;
+
+      
+      if ($truthy(["reject", "resolve", "trace", "always", "fail", "then"]['$include?'](self.type))) {
+        return nil
+      };
+      if ($truthy(self['$native?']())) {
+        return self.$raise($$('ArgumentError'), "this promise is native to JavaScript")
+      } else {
+        return nil
+      };
+    }, 0);
+    
+    $def(self, '$there_can_be_only_one!', function $PromiseV2_there_can_be_only_one$excl$10() {
+      var self = this;
+
+      if (($truthy(self.next) && ($truthy(self.next['$any?']())))) {
+        return self.$raise($$('ArgumentError'), "a promise has already been chained")
+      } else {
+        return nil
+      }
+    }, 0);
+    
+    $def(self, '$gen_tracing_proc', function $$gen_tracing_proc(passing) {
+      var block = $$gen_tracing_proc.$$p || nil, self = this;
+
+      delete $$gen_tracing_proc.$$p;
+      
+      ;
+      return $send(self, 'proc', [], function $$11(i){var res = nil;
+
+        
+        
+        if (i == null) i = nil;;
+        res = passing.$call(i);
+        Opal.yield1(block, res);
+        return res;}, 1);
+    }, 1);
+    
+    $def(self, '$resolve', function $$resolve(value) {
+      var self = this;
+
+      
+      
+      if (value == null) value = nil;;
+      self['$nativity_check!']();
+      if ($truthy(self.realized)) {
+        self.$raise($$('ArgumentError'), "this promise was already resolved")
+      };
+      self.value = value;
+      self.realized = "resolve";
+      self.resolve_proc.$call(value);
+      return self;
+    }, -1);
+    
+    $def(self, '$reject', function $$reject(value) {
+      var self = this;
+
+      
+      
+      if (value == null) value = nil;;
+      self['$nativity_check!']();
+      if ($truthy(self.realized)) {
+        self.$raise($$('ArgumentError'), "this promise was already resolved")
+      };
+      self.value = value;
+      self.realized = "reject";
+      self.reject_proc.$call(value);
+      return self;
+    }, -1);
+    
+    $def(self, '$then', function $$then() {
+      var block = $$then.$$p || nil, self = this, prom = nil, blk = nil, $ret_or_1 = nil;
+
+      delete $$then.$$p;
+      
+      ;
+      prom = nil;
+      blk = $send(self, 'gen_tracing_proc', [block], function $$12(val){
+        
+        
+        if (val == null) val = nil;;
+        prom.$instance_variable_set("@realized", "resolve");
+        return prom.$instance_variable_set("@value", val);}, 1);
+      prom = self.then(blk);
+      prom.$instance_variable_set("@prev", self);
+      prom.$instance_variable_set("@type", "then");
+      (self.next = ($truthy(($ret_or_1 = self.next)) ? ($ret_or_1) : ([])))['$<<'](prom);
+      return prom;
+    }, 0);
+    
+    $def(self, '$then!', function $PromiseV2_then$excl$13() {
+      var block = $PromiseV2_then$excl$13.$$p || nil, self = this;
+
+      delete $PromiseV2_then$excl$13.$$p;
+      
+      ;
+      self['$there_can_be_only_one!']();
+      return $send(self, 'then', [], block.$to_proc());
+    }, 0);
+    
+    $def(self, '$fail', function $$fail() {
+      var block = $$fail.$$p || nil, self = this, prom = nil, blk = nil, $ret_or_1 = nil;
+
+      delete $$fail.$$p;
+      
+      ;
+      prom = nil;
+      blk = $send(self, 'gen_tracing_proc', [block], function $$14(val){
+        
+        
+        if (val == null) val = nil;;
+        prom.$instance_variable_set("@realized", "resolve");
+        return prom.$instance_variable_set("@value", val);}, 1);
+      prom = self.catch(blk);
+      prom.$instance_variable_set("@prev", self);
+      prom.$instance_variable_set("@type", "fail");
+      (self.next = ($truthy(($ret_or_1 = self.next)) ? ($ret_or_1) : ([])))['$<<'](prom);
+      return prom;
+    }, 0);
+    
+    $def(self, '$fail!', function $PromiseV2_fail$excl$15() {
+      var block = $PromiseV2_fail$excl$15.$$p || nil, self = this;
+
+      delete $PromiseV2_fail$excl$15.$$p;
+      
+      ;
+      self['$there_can_be_only_one!']();
+      return $send(self, 'fail', [], block.$to_proc());
+    }, 0);
+    
+    $def(self, '$always', function $$always() {
+      var block = $$always.$$p || nil, self = this, prom = nil, blk = nil, $ret_or_1 = nil;
+
+      delete $$always.$$p;
+      
+      ;
+      prom = nil;
+      blk = $send(self, 'gen_tracing_proc', [block], function $$16(val){
+        
+        
+        if (val == null) val = nil;;
+        prom.$instance_variable_set("@realized", "resolve");
+        return prom.$instance_variable_set("@value", val);}, 1);
+      prom = self.finally(blk);
+      prom.$instance_variable_set("@prev", self);
+      prom.$instance_variable_set("@type", "always");
+      (self.next = ($truthy(($ret_or_1 = self.next)) ? ($ret_or_1) : ([])))['$<<'](prom);
+      return prom;
+    }, 0);
+    
+    $def(self, '$always!', function $PromiseV2_always$excl$17() {
+      var block = $PromiseV2_always$excl$17.$$p || nil, self = this;
+
+      delete $PromiseV2_always$excl$17.$$p;
+      
+      ;
+      self['$there_can_be_only_one!']();
+      return $send(self, 'always', [], block.$to_proc());
+    }, 0);
+    
+    $def(self, '$trace', function $$trace(depth) {
+      var block = $$trace.$$p || nil, self = this, prom = nil;
+
+      delete $$trace.$$p;
+      
+      ;
+      
+      if (depth == null) depth = nil;;
+      prom = $send(self, 'then', [], function $$18(){var $a, self = $$18.$$s == null ? this : $$18.$$s, values = nil, $ret_or_1 = nil, $ret_or_2 = nil, val = nil;
+
+        
+        values = [];
+        prom = self;
+        while ($truthy(($truthy(($ret_or_1 = prom)) ? (($truthy(($ret_or_2 = depth['$!']())) ? ($ret_or_2) : ($rb_gt(depth, 0)))) : ($ret_or_1)))) {
+          
+          val = nil;
+          
+          try {
+            val = prom.$value()
+          } catch ($err) {
+            if (Opal.rescue($err, [$$('ArgumentError')])) {
+              try {
+                val = "native"
+              } finally { Opal.pop_exception(); }
+            } else { throw $err; }
+          };;
+          values.$unshift(val);
+          if ($truthy(depth)) {
+            depth = $rb_minus(depth, 1)
+          };
+          prom = prom.$prev();
+        };
+        return Opal.yieldX(block, $to_a(values));;}, {$$arity: 0, $$s: self});
+      prom.$instance_variable_set("@type", "trace");
+      return prom;
+    }, -1);
+    
+    $def(self, '$trace!', function $PromiseV2_trace$excl$19($a) {
+      var block = $PromiseV2_trace$excl$19.$$p || nil, $post_args, args, self = this;
+
+      delete $PromiseV2_trace$excl$19.$$p;
+      
+      ;
+      
+      $post_args = Opal.slice.call(arguments);
+      
+      args = $post_args;;
+      self['$there_can_be_only_one!']();
+      return $send(self, 'trace', $to_a(args), block.$to_proc());
+    }, -1);
+    
+    $def(self, '$resolved?', function $PromiseV2_resolved$ques$20() {
+      var self = this;
+
+      
+      self['$light_nativity_check!']();
+      return self.realized['$==']("resolve");
+    }, 0);
+    
+    $def(self, '$rejected?', function $PromiseV2_rejected$ques$21() {
+      var self = this;
+
+      
+      self['$light_nativity_check!']();
+      return self.realized['$==']("reject");
+    }, 0);
+    
+    $def(self, '$realized?', function $PromiseV2_realized$ques$22() {
+      var self = this;
+
+      
+      self['$light_nativity_check!']();
+      return self.realized['$nil?']()['$!']();
+    }, 0);
+    
+    $def(self, '$value', function $$value() {
+      var self = this;
+
+      if ($truthy(self['$resolved?']())) {
+        if ($eqeqeq($$('PromiseV2'), self.value)) {
+          return self.value.$value()
+        } else {
+          return self.value
+        }
+      } else {
+        return nil
+      }
+    }, 0);
+    
+    $def(self, '$error', function $$error() {
+      var self = this;
+
+      
+      self['$light_nativity_check!']();
+      if ($truthy(self['$rejected?']())) {
+        return self.value
+      } else {
+        return nil
+      };
+    }, 0);
+    
+    $def(self, '$and', function $$and($a) {
+      var $post_args, promises, self = this;
+
+      
+      
+      $post_args = Opal.slice.call(arguments);
+      
+      promises = $post_args;;
+      promises = $send(promises, 'map', [], function $$23(i){
+        
+        
+        if (i == null) i = nil;;
+        if ($eqeqeq($$('PromiseV2'), i)) {
+          return i
+        } else {
+          return $$('PromiseV2').$value(i)
+        };}, 1);
+      return $send($send($$('PromiseV2'), 'when', [self].concat($to_a(promises))), 'then', [], function $$24(a, $b){var $post_args, b;
+
+        
+        
+        if (a == null) a = nil;;
+        
+        $post_args = Opal.slice.call(arguments, 1);
+        
+        b = $post_args;;
+        return [].concat($to_a(a)).concat($to_a(b));}, -2);
+    }, -1);
+    
+    $def(self, '$initialize', function $$initialize() {
+      var block = $$initialize.$$p || nil, self = this;
+
+      delete $$initialize.$$p;
+      
+      ;
+      if ((block !== nil)) {
+        return Opal.yield1(block, self);
+      } else {
+        return nil
+      };
+    }, 0);
+    
+    $def(self, '$to_v1', function $$to_v1() {
+      var self = this, v1 = nil;
+
+      
+      v1 = $$('PromiseV1').$new();
+      $send($send(self, 'then', [], function $$25(i){
+        
+        
+        if (i == null) i = nil;;
+        return v1.$resolve(i);}, 1), 'rescue', [], function $$26(i){
+        
+        
+        if (i == null) i = nil;;
+        return v1.$reject(i);}, 1);
+      return v1;
+    }, 0);
+    
+    $def(self, '$inspect', function $$inspect() {
+      var self = this, result = nil;
+
+      
+      result = "#<" + (self.$class());
+      if ($truthy(self.type)) {
+        if (!$truthy(["opal", "resolve", "reject"]['$include?'](self.type))) {
+          result = $rb_plus(result, ":" + (self.type))
+        }
+      } else {
+        result = $rb_plus(result, ":native")
+      };
+      if ($truthy(self.realized)) {
+        result = $rb_plus(result, ":" + (self.realized))
+      };
+      result = $rb_plus(result, "(" + (self.$object_id()) + ")");
+      if (($truthy(self.next) && ($truthy(self.next['$any?']())))) {
+        result = $rb_plus(result, " >> " + (self.next.$inspect()))
+      };
+      if ($truthy(self.value)) {
+        result = $rb_plus(result, ": " + (self.value.$inspect()))
+      };
+      result = $rb_plus(result, ">");
+      return result;
+    }, 0);
+    $alias(self, "catch", "fail");
+    $alias(self, "catch!", "fail!");
+    $alias(self, "do", "then");
+    $alias(self, "do!", "then!");
+    $alias(self, "ensure", "always");
+    $alias(self, "ensure!", "always!");
+    $alias(self, "finally", "always");
+    $alias(self, "finally!", "always!");
+    $alias(self, "reject!", "reject");
+    $alias(self, "rescue", "fail");
+    $alias(self, "rescue!", "fail!");
+    $alias(self, "resolve!", "resolve");
+    $alias(self, "to_n", "itself");
+    return $alias(self, "to_v2", "itself");
+  })($nesting[0], Promise, $nesting)
+};
+
+Opal.modules["await"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $coerce_to = Opal.coerce_to, $truthy = Opal.truthy, $klass = Opal.klass, $rb_lt = Opal.rb_lt, $rb_plus = Opal.rb_plus, $def = Opal.def, $send = Opal.send, $module = Opal.module, $to_a = Opal.to_a, $gvars = Opal.gvars, $rb_times = Opal.rb_times, $alias = Opal.alias;
+
+  Opal.add_stubs('warn,require,<,<<,[],+,map_await,to_proc,when,map,empty?,pop,call,new,proc,resolve,*,async?');
+  
+  if ($truthy(Opal.config.experimental_features_severity == 'warning')) {
+    self.$warn("Await functionality is a technology preview, which means it may change its behavior " + "in the future unless this warning is removed. If you are interested in this part, " + "please make sure you track the async/await/promises tag on Opal issues: " + "https://github.com/opal/opal/issues?q=label%3Aasync%2Fawait%2Fpromises")
+  };
+    var AsyncFunction = Object.getPrototypeOf(async function() {}).constructor;;
+  self.$require("promise/v2");
+  (function($base, $super) {
+    var self = $klass($base, $super, 'Array');
+
+    
+    
+    
+    $def(self, '$map_await', async function $$map_await() {
+      var block = $$map_await.$$p || nil, $a, self = this, i = nil, results = nil;
+
+      delete $$map_await.$$p;
+      
+      ;
+      i = 0;
+      results = [];
+      while ($truthy($rb_lt(i, self.length))) {
+        
+        results['$<<']((await (Opal.yield1(block, self['$[]'](i)))));
+        i = $rb_plus(i, 1);
+      };
+      return results;
+    }, 0);
+    return $def(self, '$each_await', async function $$each_await() {
+      var block = $$each_await.$$p || nil, self = this;
+
+      delete $$each_await.$$p;
+      
+      ;
+      (await ($send(self, 'map_await', [], block.$to_proc())));
+      return self;
+    }, 0);
+  })($nesting[0], null);
+  (function($base, $parent_nesting) {
+    var self = $module($base, 'Enumerable');
+
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+    return $def(self, '$each_async', async function $$each_async() {
+      var block = $$each_async.$$p || nil, self = this;
+
+      delete $$each_async.$$p;
+      
+      ;
+      return (await ($send($$('PromiseV2'), 'when', $to_a($send(self, 'map', [], block.$to_proc())))));
+    }, 0)
+  })($nesting[0], $nesting);
+  (function($base, $parent_nesting) {
+    var self = $module($base, 'Kernel');
+
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+    
+    
+    $def(self, '$exit', async function $$exit(status) {
+      var $a, $ret_or_1 = nil, block = nil;
+      if ($gvars.__at_exit__ == null) $gvars.__at_exit__ = nil;
+
+      
+      
+      if (status == null) status = true;;
+      $gvars.__at_exit__ = ($truthy(($ret_or_1 = $gvars.__at_exit__)) ? ($ret_or_1) : ([]));
+      while (!($truthy($gvars.__at_exit__['$empty?']()))) {
+        
+        block = $gvars.__at_exit__.$pop();
+        (await (block.$call()));
+      };
+      
+      if (status.$$is_boolean) {
+        status = status ? 0 : 1;
+      } else {
+        status = $coerce_to(status, $$('Integer'), 'to_int')
+      }
+
+      Opal.exit(status);
+    ;
+      return nil;
+    }, -1);
+    return $def(self, '$sleep', function $$sleep(seconds) {
+      var self = this, prom = nil;
+
+      
+      prom = $$('PromiseV2').$new();
+      setTimeout($send(self, 'proc', [], function $$1(){
+        return prom.$resolve()}, 0), $rb_times(seconds, 1000));
+      return prom;
+    }, 1);
+  })($nesting[0], $nesting);
+  (function($base) {
+    var self = $module($base, 'Kernel');
+
+    
+    return $alias(self, "await", "itself")
+  })($nesting[0]);
+  (function($base, $super) {
+    var self = $klass($base, $super, 'Proc');
+
+    
+    return $def(self, '$async?', function $Proc_async$ques$2() {
+      var self = this;
+
+      return self instanceof AsyncFunction;
+    }, 0)
+  })($nesting[0], null);
+  return (function($base, $super) {
+    var self = $klass($base, $super, 'Method');
+
+    var $proto = self.$$prototype;
+
+    $proto.method = nil;
+    return $def(self, '$async?', function $Method_async$ques$3() {
+      var self = this;
+
+      return self.method['$async?']()
+    }, 0)
+  })($nesting[0], null);
+};
diff --git a/opal/master/await.min.js b/opal/master/await.min.js
new file mode 100644
index 00000000..f3bd4f75
--- /dev/null
+++ b/opal/master/await.min.js
@@ -0,0 +1 @@
+Opal.modules["promise/v2"]=function(Opal){var $nesting=[],nil=Opal.nil,$klass=Opal.klass,$def=Opal.def,$eqeq=Opal.eqeq,$send=Opal.send,$alias=Opal.alias,$truthy=Opal.truthy,$rb_gt=Opal.rb_gt,$rb_minus=Opal.rb_minus,$to_a=Opal.to_a,$eqeqeq=Opal.eqeqeq,$rb_plus=Opal.rb_plus;return Opal.add_stubs("instance_variable_set,Array,==,length,first,tap,attr_reader,!=,native?,raise,include?,any?,proc,call,nativity_check!,gen_tracing_proc,<<,there_can_be_only_one!,then,to_proc,fail,always,!,>,value,unshift,-,prev,trace,light_nativity_check!,nil?,resolved?,===,rejected?,map,when,new,rescue,resolve,reject,class,+,object_id,inspect"),function($base,$super,$parent_nesting){var self=$klass($base,Promise,"PromiseV2"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;return $proto.type=$proto.next=$proto.realized=$proto.resolve_proc=$proto.reject_proc=$proto.value=nil,function(self,$parent_nesting){$def(self,"$allocate",(function(){var $a,ok=nil,fail=nil,prom=nil;return ok=($a=[nil,nil])[0],fail=$a[1],(prom=new this.$$constructor((function(_ok,_fail){ok=_ok,fail=_fail}))).$instance_variable_set("@type","opal"),prom.$instance_variable_set("@resolve_proc",ok),prom.$instance_variable_set("@reject_proc",fail),prom}),0),$def(self,"$when",(function($a){var promises,self=this;return promises=Opal.slice.call(arguments),promises=self.$Array($eqeq(promises.$length(),1)?promises.$first():promises),$send(Promise.all(promises),"tap",[],(function(prom){return null==prom&&(prom=nil),prom.$instance_variable_set("@type","when")}),1)}),-1),$def(self,"$all_resolved",(function($a){var promises,self=this;return promises=Opal.slice.call(arguments),promises=self.$Array($eqeq(promises.$length(),1)?promises.$first():promises),$send(Promise.allResolved(promises),"tap",[],(function(prom){return null==prom&&(prom=nil),prom.$instance_variable_set("@type","all_resolved")}),1)}),-1),$def(self,"$any",(function($a){var promises,self=this;return promises=Opal.slice.call(arguments),promises=self.$Array($eqeq(promises.$length(),1)?promises.$first():promises),$send(Promise.any(promises),"tap",[],(function(prom){return null==prom&&(prom=nil),prom.$instance_variable_set("@type","any")}),1)}),-1),$def(self,"$race",(function($a){var promises,self=this;return promises=Opal.slice.call(arguments),promises=self.$Array($eqeq(promises.$length(),1)?promises.$first():promises),$send(Promise.race(promises),"tap",[],(function(prom){return null==prom&&(prom=nil),prom.$instance_variable_set("@type","race")}),1)}),-1),$def(self,"$resolve",(function(value){return null==value&&(value=nil),$send(Promise.resolve(value),"tap",[],(function(prom){return null==prom&&(prom=nil),prom.$instance_variable_set("@type","resolve"),prom.$instance_variable_set("@realized","resolve"),prom.$instance_variable_set("@value",value)}),1)}),-1),$def(self,"$reject",(function(value){return null==value&&(value=nil),$send(Promise.reject(value),"tap",[],(function(prom){return null==prom&&(prom=nil),prom.$instance_variable_set("@type","reject"),prom.$instance_variable_set("@realized","reject"),prom.$instance_variable_set("@value",value)}),1)}),-1),$alias(self,"all","when"),$alias(self,"error","reject"),$alias(self,"value","resolve")}(Opal.get_singleton_class(self)),self.$attr_reader("prev","next"),$def(self,"$native?",(function(){return this.type["$!="]("opal")}),0),$def(self,"$nativity_check!",(function(){return $truthy(this["$native?"]())?this.$raise($$("ArgumentError"),"this promise is native to JavaScript"):nil}),0),$def(self,"$light_nativity_check!",(function(){return $truthy(["reject","resolve","trace","always","fail","then"]["$include?"](this.type))?nil:$truthy(this["$native?"]())?this.$raise($$("ArgumentError"),"this promise is native to JavaScript"):nil}),0),$def(self,"$there_can_be_only_one!",(function(){return $truthy(this.next)&&$truthy(this.next["$any?"]())?this.$raise($$("ArgumentError"),"a promise has already been chained"):nil}),0),$def(self,"$gen_tracing_proc",(function $$gen_tracing_proc(passing){var block=$$gen_tracing_proc.$$p||nil;return delete $$gen_tracing_proc.$$p,$send(this,"proc",[],(function(i){var res;return null==i&&(i=nil),res=passing.$call(i),Opal.yield1(block,res),res}),1)}),1),$def(self,"$resolve",(function(value){return null==value&&(value=nil),this["$nativity_check!"](),$truthy(this.realized)&&this.$raise($$("ArgumentError"),"this promise was already resolved"),this.value=value,this.realized="resolve",this.resolve_proc.$call(value),this}),-1),$def(self,"$reject",(function(value){return null==value&&(value=nil),this["$nativity_check!"](),$truthy(this.realized)&&this.$raise($$("ArgumentError"),"this promise was already resolved"),this.value=value,this.realized="reject",this.reject_proc.$call(value),this}),-1),$def(self,"$then",(function $$then(){var blk,$ret_or_1,block=$$then.$$p||nil,prom=nil;return delete $$then.$$p,prom=nil,blk=$send(this,"gen_tracing_proc",[block],(function(val){return null==val&&(val=nil),prom.$instance_variable_set("@realized","resolve"),prom.$instance_variable_set("@value",val)}),1),(prom=this.then(blk)).$instance_variable_set("@prev",this),prom.$instance_variable_set("@type","then"),(this.next=$truthy($ret_or_1=this.next)?$ret_or_1:[])["$<<"](prom),prom}),0),$def(self,"$then!",(function $PromiseV2_then$excl$13(){var block=$PromiseV2_then$excl$13.$$p||nil;return delete $PromiseV2_then$excl$13.$$p,this["$there_can_be_only_one!"](),$send(this,"then",[],block.$to_proc())}),0),$def(self,"$fail",(function $$fail(){var blk,$ret_or_1,block=$$fail.$$p||nil,prom=nil;return delete $$fail.$$p,prom=nil,blk=$send(this,"gen_tracing_proc",[block],(function(val){return null==val&&(val=nil),prom.$instance_variable_set("@realized","resolve"),prom.$instance_variable_set("@value",val)}),1),(prom=this.catch(blk)).$instance_variable_set("@prev",this),prom.$instance_variable_set("@type","fail"),(this.next=$truthy($ret_or_1=this.next)?$ret_or_1:[])["$<<"](prom),prom}),0),$def(self,"$fail!",(function $PromiseV2_fail$excl$15(){var block=$PromiseV2_fail$excl$15.$$p||nil;return delete $PromiseV2_fail$excl$15.$$p,this["$there_can_be_only_one!"](),$send(this,"fail",[],block.$to_proc())}),0),$def(self,"$always",(function $$always(){var blk,$ret_or_1,block=$$always.$$p||nil,prom=nil;return delete $$always.$$p,prom=nil,blk=$send(this,"gen_tracing_proc",[block],(function(val){return null==val&&(val=nil),prom.$instance_variable_set("@realized","resolve"),prom.$instance_variable_set("@value",val)}),1),(prom=this.finally(blk)).$instance_variable_set("@prev",this),prom.$instance_variable_set("@type","always"),(this.next=$truthy($ret_or_1=this.next)?$ret_or_1:[])["$<<"](prom),prom}),0),$def(self,"$always!",(function $PromiseV2_always$excl$17(){var block=$PromiseV2_always$excl$17.$$p||nil;return delete $PromiseV2_always$excl$17.$$p,this["$there_can_be_only_one!"](),$send(this,"always",[],block.$to_proc())}),0),$def(self,"$trace",(function $$trace(depth){var block=$$trace.$$p||nil,prom=nil;return delete $$trace.$$p,null==depth&&(depth=nil),(prom=$send(this,"then",[],(function $$18(){var values=nil,$ret_or_1=nil,$ret_or_2=nil,val=nil;for(values=[],prom=null==$$18.$$s?this:$$18.$$s;$truthy($truthy($ret_or_1=prom)?$truthy($ret_or_2=depth["$!"]())?$ret_or_2:$rb_gt(depth,0):$ret_or_1);){val=nil;try{val=prom.$value()}catch($err){if(!Opal.rescue($err,[$$("ArgumentError")]))throw $err;try{val="native"}finally{Opal.pop_exception()}}values.$unshift(val),$truthy(depth)&&(depth=$rb_minus(depth,1)),prom=prom.$prev()}return Opal.yieldX(block,$to_a(values))}),{$$arity:0,$$s:this})).$instance_variable_set("@type","trace"),prom}),-1),$def(self,"$trace!",(function $PromiseV2_trace$excl$19($a){var args,block=$PromiseV2_trace$excl$19.$$p||nil,self=this;return delete $PromiseV2_trace$excl$19.$$p,args=Opal.slice.call(arguments),self["$there_can_be_only_one!"](),$send(self,"trace",$to_a(args),block.$to_proc())}),-1),$def(self,"$resolved?",(function(){return this["$light_nativity_check!"](),this.realized["$=="]("resolve")}),0),$def(self,"$rejected?",(function(){return this["$light_nativity_check!"](),this.realized["$=="]("reject")}),0),$def(self,"$realized?",(function(){return this["$light_nativity_check!"](),this.realized["$nil?"]()["$!"]()}),0),$def(self,"$value",(function(){return $truthy(this["$resolved?"]())?$eqeqeq($$("PromiseV2"),this.value)?this.value.$value():this.value:nil}),0),$def(self,"$error",(function(){return this["$light_nativity_check!"](),$truthy(this["$rejected?"]())?this.value:nil}),0),$def(self,"$and",(function($a){var $post_args,promises,self=this;return $post_args=Opal.slice.call(arguments),promises=$send(promises=$post_args,"map",[],(function(i){return null==i&&(i=nil),$eqeqeq($$("PromiseV2"),i)?i:$$("PromiseV2").$value(i)}),1),$send($send($$("PromiseV2"),"when",[self].concat($to_a(promises))),"then",[],(function(a,$b){var b;return null==a&&(a=nil),b=Opal.slice.call(arguments,1),[].concat($to_a(a)).concat($to_a(b))}),-2)}),-1),$def(self,"$initialize",(function $$initialize(){var block=$$initialize.$$p||nil;return delete $$initialize.$$p,block!==nil?Opal.yield1(block,this):nil}),0),$def(self,"$to_v1",(function(){var v1=nil;return v1=$$("PromiseV1").$new(),$send($send(this,"then",[],(function(i){return null==i&&(i=nil),v1.$resolve(i)}),1),"rescue",[],(function(i){return null==i&&(i=nil),v1.$reject(i)}),1),v1}),0),$def(self,"$inspect",(function(){var result=nil;return result="#<"+this.$class(),$truthy(this.type)?$truthy(["opal","resolve","reject"]["$include?"](this.type))||(result=$rb_plus(result,":"+this.type)):result=$rb_plus(result,":native"),$truthy(this.realized)&&(result=$rb_plus(result,":"+this.realized)),result=$rb_plus(result,"("+this.$object_id()+")"),$truthy(this.next)&&$truthy(this.next["$any?"]())&&(result=$rb_plus(result," >> "+this.next.$inspect())),$truthy(this.value)&&(result=$rb_plus(result,": "+this.value.$inspect())),result=$rb_plus(result,">")}),0),$alias(self,"catch","fail"),$alias(self,"catch!","fail!"),$alias(self,"do","then"),$alias(self,"do!","then!"),$alias(self,"ensure","always"),$alias(self,"ensure!","always!"),$alias(self,"finally","always"),$alias(self,"finally!","always!"),$alias(self,"reject!","reject"),$alias(self,"rescue","fail"),$alias(self,"rescue!","fail!"),$alias(self,"resolve!","resolve"),$alias(self,"to_n","itself"),$alias(self,"to_v2","itself")}($nesting[0],0,$nesting)},Opal.modules.await=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$coerce_to=Opal.coerce_to,$truthy=Opal.truthy,$klass=Opal.klass,$rb_lt=Opal.rb_lt,$rb_plus=Opal.rb_plus,$def=Opal.def,$send=Opal.send,$module=Opal.module,$to_a=Opal.to_a,$gvars=Opal.gvars,$rb_times=Opal.rb_times,$alias=Opal.alias;Opal.add_stubs("warn,require,<,<<,[],+,map_await,to_proc,when,map,empty?,pop,call,new,proc,resolve,*,async?"),$truthy("warning"==Opal.config.experimental_features_severity)&&self.$warn("Await functionality is a technology preview, which means it may change its behavior in the future unless this warning is removed. If you are interested in this part, please make sure you track the async/await/promises tag on Opal issues: https://github.com/opal/opal/issues?q=label%3Aasync%2Fawait%2Fpromises");var AsyncFunction=Object.getPrototypeOf((async function(){})).constructor;return self.$require("promise/v2"),function($base,$super){var self=$klass($base,null,"Array");$def(self,"$map_await",(async function $$map_await(){var block=$$map_await.$$p||nil,i=nil,results=nil;for(delete $$map_await.$$p,i=0,results=[];$truthy($rb_lt(i,this.length));)results["$<<"](await Opal.yield1(block,this["$[]"](i))),i=$rb_plus(i,1);return results}),0),$def(self,"$each_await",(async function $$each_await(){var block=$$each_await.$$p||nil;return delete $$each_await.$$p,await $send(this,"map_await",[],block.$to_proc()),this}),0)}($nesting[0]),function($base,$parent_nesting){var self=$module($base,"Enumerable"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);$def(self,"$each_async",(async function $$each_async(){var block=$$each_async.$$p||nil;return delete $$each_async.$$p,await $send($$("PromiseV2"),"when",$to_a($send(this,"map",[],block.$to_proc())))}),0)}($nesting[0],$nesting),function($base,$parent_nesting){var self=$module($base,"Kernel"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);$def(self,"$exit",(async function(status){var $ret_or_1,block=nil;for(null==$gvars.__at_exit__&&($gvars.__at_exit__=nil),null==status&&(status=!0),$gvars.__at_exit__=$truthy($ret_or_1=$gvars.__at_exit__)?$ret_or_1:[];!$truthy($gvars.__at_exit__["$empty?"]());)block=$gvars.__at_exit__.$pop(),await block.$call();return status=status.$$is_boolean?status?0:1:$coerce_to(status,$$("Integer"),"to_int"),Opal.exit(status),nil}),-1),$def(self,"$sleep",(function(seconds){var prom=nil;return prom=$$("PromiseV2").$new(),setTimeout($send(this,"proc",[],(function(){return prom.$resolve()}),0),$rb_times(seconds,1e3)),prom}),1)}($nesting[0],$nesting),function($base){var self=$module($base,"Kernel");$alias(self,"await","itself")}($nesting[0]),function($base,$super){var self=$klass($base,null,"Proc");$def(self,"$async?",(function(){return this instanceof AsyncFunction}),0)}($nesting[0]),function($base,$super){var self=$klass($base,null,"Method");return self.$$prototype.method=nil,$def(self,"$async?",(function(){return this.method["$async?"]()}),0)}($nesting[0])};
diff --git a/opal/master/await.min.js.gz b/opal/master/await.min.js.gz
new file mode 100644
index 00000000..4426effc
Binary files /dev/null and b/opal/master/await.min.js.gz differ
diff --git a/opal/master/base64.js b/opal/master/base64.js
index 2821ec40..836269d6 100644
--- a/opal/master/base64.js
+++ b/opal/master/base64.js
@@ -1,12 +1,11 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["base64"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $hash2 = Opal.hash2, $truthy = Opal.truthy;
+Opal.modules["base64"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $defs = Opal.defs, $hash2 = Opal.hash2, $truthy = Opal.truthy;
 
-  Opal.add_stubs(['$raise', '$delete']);
+  Opal.add_stubs('raise,delete');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Base64');
 
-    var $nesting = [self].concat($parent_nesting), $Base64_decode64$1, $Base64_encode64$2, $Base64_strict_decode64$3, $Base64_strict_encode64$4, $Base64_urlsafe_decode64$5, $Base64_urlsafe_encode64$6;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
     
@@ -30,7 +29,7 @@ Opal.modules["base64"] = function(Opal) {
       ) {
         charCode = str.charCodeAt(idx += 3/4);
         if (charCode > 0xFF) {
-          self.$raise($$($nesting, 'ArgumentError'), "invalid character (failed: The string to be encoded contains characters outside of the Latin1 range.)");
+          self.$raise($$('ArgumentError'), "invalid character (failed: The string to be encoded contains characters outside of the Latin1 range.)");
         }
         block = block << 8 | charCode;
       }
@@ -43,7 +42,7 @@ Opal.modules["base64"] = function(Opal) {
     decode = function (input) {
       var str = String(input).replace(/=+$/, '');
       if (str.length % 4 == 1) {
-        self.$raise($$($nesting, 'ArgumentError'), "invalid base64 (failed: The string to be decoded is not correctly encoded.)");
+        self.$raise($$('ArgumentError'), "invalid base64 (failed: The string to be decoded is not correctly encoded.)");
       }
       /* eslint-disable */
       for (
@@ -64,33 +63,28 @@ Opal.modules["base64"] = function(Opal) {
       /* eslint-enable */
     };
   ;
-    Opal.defs(self, '$decode64', $Base64_decode64$1 = function $$decode64(string) {
-      var self = this;
-
+    $defs(self, '$decode64', function $$decode64(string) {
+      
       return decode(string.replace(/\r?\n/g, ''));
-    }, $Base64_decode64$1.$$arity = 1);
-    Opal.defs(self, '$encode64', $Base64_encode64$2 = function $$encode64(string) {
-      var self = this;
-
+    }, 1);
+    $defs(self, '$encode64', function $$encode64(string) {
+      
       return encode(string).replace(/(.{60})/g, "$1\n").replace(/([^\n])$/g, "$1\n");
-    }, $Base64_encode64$2.$$arity = 1);
-    Opal.defs(self, '$strict_decode64', $Base64_strict_decode64$3 = function $$strict_decode64(string) {
-      var self = this;
-
+    }, 1);
+    $defs(self, '$strict_decode64', function $$strict_decode64(string) {
+      
       return decode(string);
-    }, $Base64_strict_decode64$3.$$arity = 1);
-    Opal.defs(self, '$strict_encode64', $Base64_strict_encode64$4 = function $$strict_encode64(string) {
-      var self = this;
-
+    }, 1);
+    $defs(self, '$strict_encode64', function $$strict_encode64(string) {
+      
       return encode(string);
-    }, $Base64_strict_encode64$4.$$arity = 1);
-    Opal.defs(self, '$urlsafe_decode64', $Base64_urlsafe_decode64$5 = function $$urlsafe_decode64(string) {
-      var self = this;
-
+    }, 1);
+    $defs(self, '$urlsafe_decode64', function $$urlsafe_decode64(string) {
+      
       return decode(string.replace(/\-/g, '+').replace(/_/g, '/'));
-    }, $Base64_urlsafe_decode64$5.$$arity = 1);
-    return (Opal.defs(self, '$urlsafe_encode64', $Base64_urlsafe_encode64$6 = function $$urlsafe_encode64(string, $kwargs) {
-      var padding, self = this, str = nil;
+    }, 1);
+    return $defs(self, '$urlsafe_encode64', function $$urlsafe_encode64(string, $kwargs) {
+      var padding, str = nil;
 
       
       
@@ -101,15 +95,12 @@ Opal.modules["base64"] = function(Opal) {
       };
       
       padding = $kwargs.$$smap["padding"];
-      if (padding == null) {
-        padding = true
-      };
+      if (padding == null) padding = true;
       str = encode(string).replace(/\+/g, '-').replace(/\//g, '_');
-      if ($truthy(padding)) {
-      } else {
+      if (!$truthy(padding)) {
         str = str.$delete("=")
       };
       return str;
-    }, $Base64_urlsafe_encode64$6.$$arity = -2), nil) && 'urlsafe_encode64';
+    }, -2);
   })($nesting[0], $nesting)
 };
diff --git a/opal/master/base64.min.js b/opal/master/base64.min.js
index 80b96040..7144ff1c 100644
--- a/opal/master/base64.min.js
+++ b/opal/master/base64.min.js
@@ -1 +1 @@
-Opal.modules.base64=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$hash2=Opal.hash2,$truthy=Opal.truthy;return Opal.add_stubs(["$raise","$delete"]),function($base,$Base64_urlsafe_encode64$6){var self=$module($base,"Base64"),$nesting=[self].concat($Base64_urlsafe_encode64$6),chars="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",encode=function(input){for(var block,charCode,str=String(input),idx=0,map=chars,output="";str.charAt(0|idx)||(map="=",idx%1);output+=map.charAt(63&block>>8-idx%1*8))255<(charCode=str.charCodeAt(idx+=.75))&&self.$raise($$($nesting,"ArgumentError"),"invalid character (failed: The string to be encoded contains characters outside of the Latin1 range.)"),block=block<<8|charCode;return output},decode=function(input){var str=String(input).replace(/=+$/,"");str.length%4==1&&self.$raise($$($nesting,"ArgumentError"),"invalid base64 (failed: The string to be decoded is not correctly encoded.)");for(var bs,buffer,bc=0,idx=0,output="";buffer=str.charAt(idx++);~buffer&&(bs=bc%4?64*bs+buffer:buffer,bc++%4)&&(output+=String.fromCharCode(255&bs>>(-2*bc&6))))buffer=chars.indexOf(buffer);return output};return Opal.defs(self,"$decode64",$Base64_urlsafe_encode64$6=function(string){return decode(string.replace(/\r?\n/g,""))},$Base64_urlsafe_encode64$6.$$arity=1),Opal.defs(self,"$encode64",$Base64_urlsafe_encode64$6=function(string){return encode(string).replace(/(.{60})/g,"$1\n").replace(/([^\n])$/g,"$1\n")},$Base64_urlsafe_encode64$6.$$arity=1),Opal.defs(self,"$strict_decode64",$Base64_urlsafe_encode64$6=function(string){return decode(string)},$Base64_urlsafe_encode64$6.$$arity=1),Opal.defs(self,"$strict_encode64",$Base64_urlsafe_encode64$6=function(string){return encode(string)},$Base64_urlsafe_encode64$6.$$arity=1),Opal.defs(self,"$urlsafe_decode64",$Base64_urlsafe_encode64$6=function(string){return decode(string.replace(/\-/g,"+").replace(/_/g,"/"))},$Base64_urlsafe_encode64$6.$$arity=1),Opal.defs(self,"$urlsafe_encode64",$Base64_urlsafe_encode64$6=function(string,padding){var str=nil;if(null==padding)padding=$hash2([],{});else if(!padding.$$is_hash)throw Opal.ArgumentError.$new("expected kwargs");return null==(padding=padding.$$smap.padding)&&(padding=!0),str=encode(string).replace(/\+/g,"-").replace(/\//g,"_"),$truthy(padding)||(str=str.$delete("=")),str},$Base64_urlsafe_encode64$6.$$arity=-2),nil&&"urlsafe_encode64"}($nesting[0],$nesting)};
+Opal.modules.base64=function(Opal){var $nesting=[],nil=Opal.nil,$module=Opal.module,$defs=Opal.defs,$hash2=Opal.hash2,$truthy=Opal.truthy;return Opal.add_stubs("raise,delete"),function($base,$parent_nesting){var encode,decode,self=$module($base,"Base64"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),chars="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";return encode=function(input){for(var block,charCode,str=String(input),idx=0,map=chars,output="";str.charAt(0|idx)||(map="=",idx%1);output+=map.charAt(63&block>>8-idx%1*8))(charCode=str.charCodeAt(idx+=3/4))>255&&self.$raise($$("ArgumentError"),"invalid character (failed: The string to be encoded contains characters outside of the Latin1 range.)"),block=block<<8|charCode;return output},decode=function(input){var str=String(input).replace(/=+$/,"");str.length%4==1&&self.$raise($$("ArgumentError"),"invalid base64 (failed: The string to be decoded is not correctly encoded.)");for(var bs,buffer,bc=0,idx=0,output="";buffer=str.charAt(idx++);~buffer&&(bs=bc%4?64*bs+buffer:buffer,bc++%4)?output+=String.fromCharCode(255&bs>>(-2*bc&6)):0)buffer=chars.indexOf(buffer);return output},$defs(self,"$decode64",(function(string){return decode(string.replace(/\r?\n/g,""))}),1),$defs(self,"$encode64",(function(string){return encode(string).replace(/(.{60})/g,"$1\n").replace(/([^\n])$/g,"$1\n")}),1),$defs(self,"$strict_decode64",(function(string){return decode(string)}),1),$defs(self,"$strict_encode64",(function(string){return encode(string)}),1),$defs(self,"$urlsafe_decode64",(function(string){return decode(string.replace(/\-/g,"+").replace(/_/g,"/"))}),1),$defs(self,"$urlsafe_encode64",(function(string,$kwargs){var padding,str=nil;if(null==$kwargs)$kwargs=$hash2([],{});else if(!$kwargs.$$is_hash)throw Opal.ArgumentError.$new("expected kwargs");return null==(padding=$kwargs.$$smap.padding)&&(padding=!0),str=encode(string).replace(/\+/g,"-").replace(/\//g,"_"),$truthy(padding)||(str=str.$delete("=")),str}),-2)}($nesting[0],$nesting)};
diff --git a/opal/master/base64.min.js.gz b/opal/master/base64.min.js.gz
index 260af86e..9fe292b2 100644
Binary files a/opal/master/base64.min.js.gz and b/opal/master/base64.min.js.gz differ
diff --git a/opal/master/benchmark.js b/opal/master/benchmark.js
index 73a94463..2a8fea7c 100644
--- a/opal/master/benchmark.js
+++ b/opal/master/benchmark.js
@@ -1,277 +1,195 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["benchmark"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_times(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs * rhs : lhs['$*'](rhs);
-  }
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $send = Opal.send, $truthy = Opal.truthy, $klass = Opal.klass, $alias = Opal.alias, $gvars = Opal.gvars;
-
-  Opal.add_stubs(['$sync', '$sync=', '$-', '$+', '$empty?', '$print', '$*', '$new', '$===', '$each', '$grep', '$ljust', '$shift', '$label', '$format', '$list', '$nil?', '$benchmark', '$to_proc', '$width', '$puts', '$length', '$inject', '$measure', '$rjust', '$map', '$start', '$tap', '$times', '$clock_gettime', '$utime', '$stime', '$cutime', '$cstime', '$module_function', '$raise', '$to_s', '$<', '$<<', '$attr_reader', '$real', '$memberwise', '$gsub', '$dup', '$%', '$total', '$protected', '$__send__']);
+Opal.modules["benchmark"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $const_set = Opal.const_set, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $truthy = Opal.truthy, $rb_plus = Opal.rb_plus, $rb_times = Opal.rb_times, $def = Opal.def, $to_ary = Opal.to_ary, $klass = Opal.klass, $rb_lt = Opal.rb_lt, $alias = Opal.alias, $gvars = Opal.gvars, $hash2 = Opal.hash2, $eqeqeq = Opal.eqeqeq;
+
+  Opal.add_stubs('sync,sync=,-,+,empty?,print,*,new,===,each,grep,ljust,shift,label,format,list,nil?,benchmark,to_proc,width,puts,length,inject,measure,rjust,map,start,tap,times,clock_gettime,utime,stime,cutime,cstime,module_function,raise,to_s,<,<<,attr_reader,real,memberwise,gsub,dup,%,total,protected,__send__');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Benchmark');
 
-    var $nesting = [self].concat($parent_nesting), $Benchmark_benchmark$1, $Benchmark_bm$3, $Benchmark_bmbm$4, $a, $b, $Benchmark_measure$8, $Benchmark_realtime$9;
+    var $a, $b, $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
-    Opal.const_set($nesting[0], 'BENCHMARK_VERSION', "2002-04-25");
+    $const_set($nesting[0], 'BENCHMARK_VERSION', "2002-04-25");
     
-    Opal.def(self, '$benchmark', $Benchmark_benchmark$1 = function $$benchmark($a, $b, $c, $d) {
-      var $post_args, caption, label_width, format, labels, $$2, $iter = $Benchmark_benchmark$1.$$p, $yield = $iter || nil, self = this, sync = nil, $writer = nil, $ret_or_1 = nil, $ret_or_2 = nil, report = nil, results = nil, $ret_or_3 = nil;
+    $def(self, '$benchmark', function $$benchmark($a, $b, $c, $d) {
+      var $post_args, caption, label_width, format, labels, $yield = $$benchmark.$$p || nil, self = this, sync = nil, $writer = nil, $ret_or_1 = nil, report = nil, results = nil;
 
-      if ($iter) $Benchmark_benchmark$1.$$p = null;
+      delete $$benchmark.$$p;
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
-      if ($post_args.length > 0) {
-        caption = $post_args[0];
-        $post_args.splice(0, 1);
-      }
-      if (caption == null) {
-        caption = "";
-      };
+      if ($post_args.length > 0) caption = $post_args.shift();
+      if (caption == null) caption = "";;
       
-      if ($post_args.length > 0) {
-        label_width = $post_args[0];
-        $post_args.splice(0, 1);
-      }
-      if (label_width == null) {
-        label_width = nil;
-      };
+      if ($post_args.length > 0) label_width = $post_args.shift();
+      if (label_width == null) label_width = nil;;
       
-      if ($post_args.length > 0) {
-        format = $post_args[0];
-        $post_args.splice(0, 1);
-      }
-      if (format == null) {
-        format = nil;
-      };
+      if ($post_args.length > 0) format = $post_args.shift();
+      if (format == null) format = nil;;
       
       labels = $post_args;;
       return (function() { try {
       
-      sync = $$($nesting, 'STDOUT').$sync();
+      sync = $$('STDOUT').$sync();
       
       $writer = [true];
-      $send($$($nesting, 'STDOUT'), 'sync=', Opal.to_a($writer));
+      $send($$('STDOUT'), 'sync=', $to_a($writer));
       $writer[$rb_minus($writer["length"], 1)];;
-      label_width = (function() {if ($truthy(($ret_or_1 = label_width))) {
-        return $ret_or_1
-      } else {
-        return 0
-      }; return nil; })();
+      label_width = ($truthy(($ret_or_1 = label_width)) ? ($ret_or_1) : (0));
       label_width = $rb_plus(label_width, 1);
-      format = (function() {if ($truthy(($ret_or_2 = format))) {
-        return $ret_or_2
-      } else {
-        return $$($nesting, 'FORMAT')
-      }; return nil; })();
-      if ($truthy(caption['$empty?']())) {
-      } else {
+      format = ($truthy(($ret_or_1 = format)) ? ($ret_or_1) : ($$('FORMAT')));
+      if (!$truthy(caption['$empty?']())) {
         self.$print($rb_plus($rb_times(" ", label_width), caption))
       };
-      report = $$($nesting, 'Report').$new(label_width, format);
+      report = $$('Report').$new(label_width, format);
       results = Opal.yield1($yield, report);
-      if ($truthy(($ret_or_3 = $$($nesting, 'Array')['$==='](results)))) {
-        $send(results.$grep($$($nesting, 'Tms')), 'each', [], ($$2 = function(t){var self = $$2.$$s == null ? this : $$2.$$s, $ret_or_4 = nil, $ret_or_5 = nil;
+      if ($truthy(($ret_or_1 = $$('Array')['$==='](results)))) {
+        $send(results.$grep($$('Tms')), 'each', [], function $$1(t){var self = $$1.$$s == null ? this : $$1.$$s, $ret_or_2 = nil, $ret_or_3 = nil;
 
           
           
-          if (t == null) {
-            t = nil;
-          };
-          return self.$print((function() {if ($truthy(($ret_or_4 = (function() {if ($truthy(($ret_or_5 = labels.$shift()))) {
-            return $ret_or_5
-          } else {
-            return t.$label()
-          }; return nil; })()))) {
-            return $ret_or_4
-          } else {
-            return ""
-          }; return nil; })().$ljust(label_width), t.$format(format));}, $$2.$$s = self, $$2.$$arity = 1, $$2))
+          if (t == null) t = nil;;
+          return self.$print(($truthy(($ret_or_2 = ($truthy(($ret_or_3 = labels.$shift())) ? ($ret_or_3) : (t.$label())))) ? ($ret_or_2) : ("")).$ljust(label_width), t.$format(format));}, {$$arity: 1, $$s: self})
       } else {
-        $ret_or_3
+        $ret_or_1
       };
       return report.$list();
       } finally {
-        (function() {if ($truthy(sync['$nil?']())) {
-          return nil
-        } else {
-          
-          $writer = [sync];
-          $send($$($nesting, 'STDOUT'), 'sync=', Opal.to_a($writer));
-          return $writer[$rb_minus($writer["length"], 1)];
-        }; return nil; })()
+        ($truthy(sync['$nil?']()) ? (nil) : ((($writer = [sync]), $send($$('STDOUT'), 'sync=', $to_a($writer)), $writer[$rb_minus($writer["length"], 1)])))
       }; })();
-    }, $Benchmark_benchmark$1.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$bm', $Benchmark_bm$3 = function $$bm($a, $b) {
-      var $iter = $Benchmark_bm$3.$$p, blk = $iter || nil, $post_args, label_width, labels, self = this;
+    $def(self, '$bm', function $$bm($a, $b) {
+      var blk = $$bm.$$p || nil, $post_args, label_width, labels, self = this;
 
-      if ($iter) $Benchmark_bm$3.$$p = null;
+      delete $$bm.$$p;
       
+      ;
       
-      if ($iter) $Benchmark_bm$3.$$p = null;;
+      $post_args = Opal.slice.call(arguments);
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
-      
-      if ($post_args.length > 0) {
-        label_width = $post_args[0];
-        $post_args.splice(0, 1);
-      }
-      if (label_width == null) {
-        label_width = 0;
-      };
+      if ($post_args.length > 0) label_width = $post_args.shift();
+      if (label_width == null) label_width = 0;;
       
       labels = $post_args;;
-      return $send(self, 'benchmark', [$$($nesting, 'CAPTION'), label_width, $$($nesting, 'FORMAT')].concat(Opal.to_a(labels)), blk.$to_proc());
-    }, $Benchmark_bm$3.$$arity = -1);
+      return $send(self, 'benchmark', [$$('CAPTION'), label_width, $$('FORMAT')].concat($to_a(labels)), blk.$to_proc());
+    }, -1);
     
-    Opal.def(self, '$bmbm', $Benchmark_bmbm$4 = function $$bmbm(width) {
-      var $$5, $$6, $iter = $Benchmark_bmbm$4.$$p, $yield = $iter || nil, self = this, job = nil, sync = nil, $writer = nil, ets = nil;
+    $def(self, '$bmbm', function $$bmbm(width) {
+      var $yield = $$bmbm.$$p || nil, self = this, job = nil, sync = nil, $writer = nil, ets = nil;
 
-      if ($iter) $Benchmark_bmbm$4.$$p = null;
+      delete $$bmbm.$$p;
       
       
-      if (width == null) {
-        width = 0;
-      };
+      if (width == null) width = 0;;
       return (function() { try {
       
-      job = $$($nesting, 'Job').$new(width);
+      job = $$('Job').$new(width);
       Opal.yield1($yield, job);
       width = $rb_plus(job.$width(), 1);
-      sync = $$($nesting, 'STDOUT').$sync();
+      sync = $$('STDOUT').$sync();
       
       $writer = [true];
-      $send($$($nesting, 'STDOUT'), 'sync=', Opal.to_a($writer));
+      $send($$('STDOUT'), 'sync=', $to_a($writer));
       $writer[$rb_minus($writer["length"], 1)];;
-      self.$puts("Rehearsal ".$ljust($rb_plus(width, $$($nesting, 'CAPTION').$length()), "-"));
-      ets = $send(job.$list(), 'inject', [$$($nesting, 'Tms').$new()], ($$5 = function(sum, $mlhs_tmp1){var self = $$5.$$s == null ? this : $$5.$$s, $a, $b, label = nil, item = nil, res = nil;
+      self.$puts("Rehearsal ".$ljust($rb_plus(width, $$('CAPTION').$length()), "-"));
+      ets = $send(job.$list(), 'inject', [$$('Tms').$new()], function $$2(sum, $mlhs_tmp1){var $a, $b, self = $$2.$$s == null ? this : $$2.$$s, label = nil, item = nil, res = nil;
 
         
         
-        if (sum == null) {
-          sum = nil;
-        };
+        if (sum == null) sum = nil;;
         
-        if ($mlhs_tmp1 == null) {
-          $mlhs_tmp1 = nil;
-        };
-        $b = $mlhs_tmp1, $a = Opal.to_ary($b), (label = ($a[0] == null ? nil : $a[0])), (item = ($a[1] == null ? nil : $a[1])), $b;
+        if ($mlhs_tmp1 == null) $mlhs_tmp1 = nil;;
+        $b = $mlhs_tmp1, $a = $to_ary($b), (label = ($a[0] == null ? nil : $a[0])), (item = ($a[1] == null ? nil : $a[1])), $b;
         self.$print(label.$ljust(width));
-        res = $send($$($nesting, 'Benchmark'), 'measure', [], item.$to_proc());
+        res = $send($$('Benchmark'), 'measure', [], item.$to_proc());
         self.$print(res.$format());
-        return $rb_plus(sum, res);}, $$5.$$s = self, $$5.$$arity = 2, $$5.$$has_top_level_mlhs_arg = true, $$5)).$format("total: %tsec");
-      self.$print(((("" + " ") + (ets)) + "\n\n").$rjust($rb_plus($rb_plus(width, $$($nesting, 'CAPTION').$length()), 2), "-"));
-      self.$print($rb_plus($rb_times(" ", width), $$($nesting, 'CAPTION')));
-      return $send(job.$list(), 'map', [], ($$6 = function(label, item){var self = $$6.$$s == null ? this : $$6.$$s, $$7;
+        return $rb_plus(sum, res);}, {$$arity: 2, $$s: self, $$has_top_level_mlhs_arg: true}).$format("total: %tsec");
+      self.$print((((" ") + (ets)) + "\n\n").$rjust($rb_plus($rb_plus(width, $$('CAPTION').$length()), 2), "-"));
+      self.$print($rb_plus($rb_times(" ", width), $$('CAPTION')));
+      return $send(job.$list(), 'map', [], function $$3(label, item){var self = $$3.$$s == null ? this : $$3.$$s;
 
         
         
-        if (label == null) {
-          label = nil;
-        };
+        if (label == null) label = nil;;
         
-        if (item == null) {
-          item = nil;
-        };
-        $$($nesting, 'GC').$start();
+        if (item == null) item = nil;;
+        $$('GC').$start();
         self.$print(label.$ljust(width));
-        return $send($send($$($nesting, 'Benchmark'), 'measure', [label], item.$to_proc()), 'tap', [], ($$7 = function(res){var self = $$7.$$s == null ? this : $$7.$$s;
+        return $send($send($$('Benchmark'), 'measure', [label], item.$to_proc()), 'tap', [], function $$4(res){var self = $$4.$$s == null ? this : $$4.$$s;
 
           
           
-          if (res == null) {
-            res = nil;
-          };
-          return self.$print(res);}, $$7.$$s = self, $$7.$$arity = 1, $$7));}, $$6.$$s = self, $$6.$$arity = 2, $$6));
+          if (res == null) res = nil;;
+          return self.$print(res);}, {$$arity: 1, $$s: self});}, {$$arity: 2, $$s: self});
       } finally {
-        (function() {if ($truthy(sync['$nil?']())) {
-          return nil
-        } else {
-          
-          $writer = [sync];
-          $send($$($nesting, 'STDOUT'), 'sync=', Opal.to_a($writer));
-          return $writer[$rb_minus($writer["length"], 1)];
-        }; return nil; })()
+        ($truthy(sync['$nil?']()) ? (nil) : ((($writer = [sync]), $send($$('STDOUT'), 'sync=', $to_a($writer)), $writer[$rb_minus($writer["length"], 1)])))
       }; })();
-    }, $Benchmark_bmbm$4.$$arity = -1);
+    }, -1);
+    if ($truthy((($b = $$('Process', 'skip_raise')) && ($a = $$$($b, 'CLOCK_MONOTONIC', 'skip_raise')) ? 'constant' : nil))) {
+      $const_set($nesting[0], 'BENCHMARK_CLOCK', $$$($$('Process'), 'CLOCK_MONOTONIC'))
+    } else {
+      $const_set($nesting[0], 'BENCHMARK_CLOCK', $$$($$('Process'), 'CLOCK_REALTIME'))
+    };
     
-    if ($truthy((($b = $$($nesting, 'Process', 'skip_raise')) && ($a = $$$($b, 'CLOCK_MONOTONIC', 'skip_raise')) ? 'constant' : nil))) {Opal.const_set($nesting[0], 'BENCHMARK_CLOCK', $$$($$($nesting, 'Process'), 'CLOCK_MONOTONIC'))}
-    else {Opal.const_set($nesting[0], 'BENCHMARK_CLOCK', $$$($$($nesting, 'Process'), 'CLOCK_REALTIME'))};
-    
-    Opal.def(self, '$measure', $Benchmark_measure$8 = function $$measure(label) {
-      var $a, $iter = $Benchmark_measure$8.$$p, $yield = $iter || nil, self = this, t0 = nil, r0 = nil, t1 = nil, r1 = nil;
+    $def(self, '$measure', function $$measure(label) {
+      var $a, $yield = $$measure.$$p || nil, t0 = nil, r0 = nil, t1 = nil, r1 = nil;
 
-      if ($iter) $Benchmark_measure$8.$$p = null;
+      delete $$measure.$$p;
       
       
-      if (label == null) {
-        label = "";
-      };
-      $a = [$$($nesting, 'Process').$times(), $$($nesting, 'Process').$clock_gettime($$($nesting, 'BENCHMARK_CLOCK'))], (t0 = $a[0]), (r0 = $a[1]), $a;
+      if (label == null) label = "";;
+      $a = [$$('Process').$times(), $$('Process').$clock_gettime($$('BENCHMARK_CLOCK'))], (t0 = $a[0]), (r0 = $a[1]), $a;
       Opal.yieldX($yield, []);
-      $a = [$$($nesting, 'Process').$times(), $$($nesting, 'Process').$clock_gettime($$($nesting, 'BENCHMARK_CLOCK'))], (t1 = $a[0]), (r1 = $a[1]), $a;
-      return $$$($$($nesting, 'Benchmark'), 'Tms').$new($rb_minus(t1.$utime(), t0.$utime()), $rb_minus(t1.$stime(), t0.$stime()), $rb_minus(t1.$cutime(), t0.$cutime()), $rb_minus(t1.$cstime(), t0.$cstime()), $rb_minus(r1, r0), label);
-    }, $Benchmark_measure$8.$$arity = -1);
+      $a = [$$('Process').$times(), $$('Process').$clock_gettime($$('BENCHMARK_CLOCK'))], (t1 = $a[0]), (r1 = $a[1]), $a;
+      return $$$($$('Benchmark'), 'Tms').$new($rb_minus(t1.$utime(), t0.$utime()), $rb_minus(t1.$stime(), t0.$stime()), $rb_minus(t1.$cutime(), t0.$cutime()), $rb_minus(t1.$cstime(), t0.$cstime()), $rb_minus(r1, r0), label);
+    }, -1);
     
-    Opal.def(self, '$realtime', $Benchmark_realtime$9 = function $$realtime() {
-      var $iter = $Benchmark_realtime$9.$$p, $yield = $iter || nil, self = this, r0 = nil;
+    $def(self, '$realtime', function $$realtime() {
+      var $yield = $$realtime.$$p || nil, r0 = nil;
 
-      if ($iter) $Benchmark_realtime$9.$$p = null;
+      delete $$realtime.$$p;
       
-      r0 = $$($nesting, 'Process').$clock_gettime($$($nesting, 'BENCHMARK_CLOCK'));
+      r0 = $$('Process').$clock_gettime($$('BENCHMARK_CLOCK'));
       Opal.yieldX($yield, []);
-      return $rb_minus($$($nesting, 'Process').$clock_gettime($$($nesting, 'BENCHMARK_CLOCK')), r0);
-    }, $Benchmark_realtime$9.$$arity = 0);
+      return $rb_minus($$('Process').$clock_gettime($$('BENCHMARK_CLOCK')), r0);
+    }, 0);
     self.$module_function("benchmark", "measure", "realtime", "bm", "bmbm");
     (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Job');
 
-      var $nesting = [self].concat($parent_nesting), $Job_initialize$10, $Job_item$11;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.width = self.$$prototype.list = nil;
+      $proto.width = $proto.list = nil;
       
       
-      Opal.def(self, '$initialize', $Job_initialize$10 = function $$initialize(width) {
+      $def(self, '$initialize', function $$initialize(width) {
         var self = this;
 
         
         self.width = width;
         return (self.list = []);
-      }, $Job_initialize$10.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$item', $Job_item$11 = function $$item(label) {
-        var $iter = $Job_item$11.$$p, blk = $iter || nil, self = this, w = nil;
+      $def(self, '$item', function $$item(label) {
+        var blk = $$item.$$p || nil, self = this, w = nil;
 
-        if ($iter) $Job_item$11.$$p = null;
-        
+        delete $$item.$$p;
         
-        if ($iter) $Job_item$11.$$p = null;;
+        ;
         
-        if (label == null) {
-          label = "";
-        };
-        if ((blk !== nil)) {
-        } else {
-          self.$raise($$($nesting, 'ArgumentError'), "no block")
+        if (label == null) label = "";;
+        if (!(blk !== nil)) {
+          self.$raise($$('ArgumentError'), "no block")
         };
         label = label.$to_s();
         w = label.$length();
         if ($truthy($rb_lt(self.width, w))) {
-          self.width = w};
+          self.width = w
+        };
         self.list['$<<']([label, blk]);
         return self;
-      }, $Job_item$11.$$arity = -1);
+      }, -1);
       $alias(self, "report", "item");
       self.$attr_reader("list");
       return self.$attr_reader("width");
@@ -279,62 +197,52 @@ Opal.modules["benchmark"] = function(Opal) {
     (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Report');
 
-      var $nesting = [self].concat($parent_nesting), $Report_initialize$12, $Report_item$13;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.width = self.$$prototype.list = self.$$prototype.format = nil;
+      $proto.width = $proto.list = $proto.format = nil;
       
       
-      Opal.def(self, '$initialize', $Report_initialize$12 = function $$initialize(width, format) {
+      $def(self, '$initialize', function $$initialize(width, format) {
         var $a, self = this;
 
         
         
-        if (width == null) {
-          width = 0;
-        };
+        if (width == null) width = 0;;
         
-        if (format == null) {
-          format = nil;
-        };
+        if (format == null) format = nil;;
         return $a = [width, format, []], (self.width = $a[0]), (self.format = $a[1]), (self.list = $a[2]), $a;
-      }, $Report_initialize$12.$$arity = -1);
+      }, -1);
       
-      Opal.def(self, '$item', $Report_item$13 = function $$item($a, $b) {
-        var $iter = $Report_item$13.$$p, blk = $iter || nil, $post_args, label, format, self = this, res = nil;
+      $def(self, '$item', function $$item($a, $b) {
+        var blk = $$item.$$p || nil, $post_args, label, format, self = this, res = nil;
 
-        if ($iter) $Report_item$13.$$p = null;
+        delete $$item.$$p;
         
+        ;
         
-        if ($iter) $Report_item$13.$$p = null;;
+        $post_args = Opal.slice.call(arguments);
         
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
-        
-        if ($post_args.length > 0) {
-          label = $post_args[0];
-          $post_args.splice(0, 1);
-        }
-        if (label == null) {
-          label = "";
-        };
+        if ($post_args.length > 0) label = $post_args.shift();
+        if (label == null) label = "";;
         
         format = $post_args;;
         self.$print(label.$to_s().$ljust(self.width));
-        self.list['$<<']((res = $send($$($nesting, 'Benchmark'), 'measure', [label], blk.$to_proc())));
-        self.$print($send(res, 'format', [self.format].concat(Opal.to_a(format))));
+        self.list['$<<']((res = $send($$('Benchmark'), 'measure', [label], blk.$to_proc())));
+        self.$print($send(res, 'format', [self.format].concat($to_a(format))));
         return res;
-      }, $Report_item$13.$$arity = -1);
+      }, -1);
       $alias(self, "report", "item");
       return self.$attr_reader("list");
     })($nesting[0], null, $nesting);
     (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Tms');
 
-      var $nesting = [self].concat($parent_nesting), $Tms_initialize$14, $Tms_add$15, $Tms_add$excl$16, $Tms_$plus$17, $Tms_$minus$18, $Tms_$$19, $Tms_$slash$20, $Tms_format$21, $Tms_to_s$29, $Tms_to_a$30, $Tms_memberwise$31;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.utime = self.$$prototype.stime = self.$$prototype.cutime = self.$$prototype.cstime = self.$$prototype.label = self.$$prototype.real = nil;
+      $proto.utime = $proto.stime = $proto.cutime = $proto.cstime = $proto.label = $proto.real = nil;
       
-      Opal.const_set($nesting[0], 'CAPTION', "      user     system      total        real\n");
-      Opal.const_set($nesting[0], 'FORMAT', "%10.6u %10.6y %10.6t %10.6r\n");
+      $const_set($nesting[0], 'CAPTION', "      user     system      total        real\n");
+      $const_set($nesting[0], 'FORMAT', "%10.6u %10.6y %10.6t %10.6r\n");
       self.$attr_reader("utime");
       self.$attr_reader("stime");
       self.$attr_reader("cutime");
@@ -343,151 +251,136 @@ Opal.modules["benchmark"] = function(Opal) {
       self.$attr_reader("total");
       self.$attr_reader("label");
       
-      Opal.def(self, '$initialize', $Tms_initialize$14 = function $$initialize(utime, stime, cutime, cstime, real, label) {
+      $def(self, '$initialize', function $$initialize(utime, stime, cutime, cstime, real, label) {
         var $a, self = this;
 
         
         
-        if (utime == null) {
-          utime = 0.0;
-        };
+        if (utime == null) utime = 0.0;;
         
-        if (stime == null) {
-          stime = 0.0;
-        };
+        if (stime == null) stime = 0.0;;
         
-        if (cutime == null) {
-          cutime = 0.0;
-        };
+        if (cutime == null) cutime = 0.0;;
         
-        if (cstime == null) {
-          cstime = 0.0;
-        };
+        if (cstime == null) cstime = 0.0;;
         
-        if (real == null) {
-          real = 0.0;
-        };
+        if (real == null) real = 0.0;;
         
-        if (label == null) {
-          label = nil;
-        };
+        if (label == null) label = nil;;
         $a = [utime, stime, cutime, cstime, real, label.$to_s()], (self.utime = $a[0]), (self.stime = $a[1]), (self.cutime = $a[2]), (self.cstime = $a[3]), (self.real = $a[4]), (self.label = $a[5]), $a;
         return (self.total = $rb_plus($rb_plus($rb_plus(self.utime, self.stime), self.cutime), self.cstime));
-      }, $Tms_initialize$14.$$arity = -1);
+      }, -1);
       
-      Opal.def(self, '$add', $Tms_add$15 = function $$add() {
-        var $iter = $Tms_add$15.$$p, blk = $iter || nil, self = this;
+      $def(self, '$add', function $$add() {
+        var blk = $$add.$$p || nil, self = this;
 
-        if ($iter) $Tms_add$15.$$p = null;
-        
+        delete $$add.$$p;
         
-        if ($iter) $Tms_add$15.$$p = null;;
-        return $rb_plus(self, $send($$($nesting, 'Benchmark'), 'measure', [], blk.$to_proc()));
-      }, $Tms_add$15.$$arity = 0);
+        ;
+        return $rb_plus(self, $send($$('Benchmark'), 'measure', [], blk.$to_proc()));
+      }, 0);
       
-      Opal.def(self, '$add!', $Tms_add$excl$16 = function() {
-        var $iter = $Tms_add$excl$16.$$p, blk = $iter || nil, self = this, t = nil;
+      $def(self, '$add!', function $Tms_add$excl$5() {
+        var blk = $Tms_add$excl$5.$$p || nil, self = this, t = nil;
 
-        if ($iter) $Tms_add$excl$16.$$p = null;
-        
+        delete $Tms_add$excl$5.$$p;
         
-        if ($iter) $Tms_add$excl$16.$$p = null;;
-        t = $send($$($nesting, 'Benchmark'), 'measure', [], blk.$to_proc());
+        ;
+        t = $send($$('Benchmark'), 'measure', [], blk.$to_proc());
         self.utime = $rb_plus(self.$utime(), t.$utime());
         self.stime = $rb_plus(self.$stime(), t.$stime());
         self.cutime = $rb_plus(self.$cutime(), t.$cutime());
         self.cstime = $rb_plus(self.$cstime(), t.$cstime());
         self.real = $rb_plus(self.$real(), t.$real());
         return self;
-      }, $Tms_add$excl$16.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$+', $Tms_$plus$17 = function(other) {
+      $def(self, '$+', function $Tms_$plus$6(other) {
         var self = this;
 
         return self.$memberwise("+", other)
-      }, $Tms_$plus$17.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$-', $Tms_$minus$18 = function(other) {
+      $def(self, '$-', function $Tms_$minus$7(other) {
         var self = this;
 
         return self.$memberwise("-", other)
-      }, $Tms_$minus$18.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$*', $Tms_$$19 = function(x) {
+      $def(self, '$*', function $Tms_$$8(x) {
         var self = this;
 
         return self.$memberwise("*", x)
-      }, $Tms_$$19.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$/', $Tms_$slash$20 = function(x) {
+      $def(self, '$/', function $Tms_$slash$9(x) {
         var self = this;
 
         return self.$memberwise("/", x)
-      }, $Tms_$slash$20.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$format', $Tms_format$21 = function $$format($a, $b) {
-        var $post_args, format, args, $$22, $$23, $$24, $$25, $$26, $$27, $$28, self = this, str = nil, $ret_or_6 = nil;
+      $def(self, '$format', function $$format($a, $b) {
+        var $post_args, format, args, self = this, str = nil, $ret_or_1 = nil;
 
         
         
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
+        $post_args = Opal.slice.call(arguments);
         
-        if ($post_args.length > 0) {
-          format = $post_args[0];
-          $post_args.splice(0, 1);
-        }
-        if (format == null) {
-          format = nil;
-        };
+        if ($post_args.length > 0) format = $post_args.shift();
+        if (format == null) format = nil;;
         
         args = $post_args;;
-        str = $send($send($send($send($send($send($send((function() {if ($truthy(($ret_or_6 = format))) {
-          return $ret_or_6
-        } else {
-          return $$($nesting, 'FORMAT')
-        }; return nil; })().$dup(), 'gsub', [/(%[-+.\d]*)n/], ($$22 = function(){var self = $$22.$$s == null ? this : $$22.$$s, $c;
+        str = $send($send($send($send($send($send($send(($truthy(($ret_or_1 = format)) ? ($ret_or_1) : ($$('FORMAT'))).$dup(), 'gsub', [/(%[-+.\d]*)n/], function $$10(){var $c, self = $$10.$$s == null ? this : $$10.$$s;
 
-          return (("" + ((($c = $gvars['~']) === nil ? nil : $c['$[]'](1)))) + "s")['$%'](self.$label())}, $$22.$$s = self, $$22.$$arity = 0, $$22)), 'gsub', [/(%[-+.\d]*)u/], ($$23 = function(){var self = $$23.$$s == null ? this : $$23.$$s, $c;
+          return (("" + ((($c = $gvars['~']) === nil ? nil : $c['$[]'](1)))) + "s")['$%'](self.$label())}, {$$arity: 0, $$s: self}), 'gsub', [/(%[-+.\d]*)u/], function $$11(){var $c, self = $$11.$$s == null ? this : $$11.$$s;
 
-          return (("" + ((($c = $gvars['~']) === nil ? nil : $c['$[]'](1)))) + "f")['$%'](self.$utime())}, $$23.$$s = self, $$23.$$arity = 0, $$23)), 'gsub', [/(%[-+.\d]*)y/], ($$24 = function(){var self = $$24.$$s == null ? this : $$24.$$s, $c;
+          return (("" + ((($c = $gvars['~']) === nil ? nil : $c['$[]'](1)))) + "f")['$%'](self.$utime())}, {$$arity: 0, $$s: self}), 'gsub', [/(%[-+.\d]*)y/], function $$12(){var $c, self = $$12.$$s == null ? this : $$12.$$s;
 
-          return (("" + ((($c = $gvars['~']) === nil ? nil : $c['$[]'](1)))) + "f")['$%'](self.$stime())}, $$24.$$s = self, $$24.$$arity = 0, $$24)), 'gsub', [/(%[-+.\d]*)U/], ($$25 = function(){var self = $$25.$$s == null ? this : $$25.$$s, $c;
+          return (("" + ((($c = $gvars['~']) === nil ? nil : $c['$[]'](1)))) + "f")['$%'](self.$stime())}, {$$arity: 0, $$s: self}), 'gsub', [/(%[-+.\d]*)U/], function $$13(){var $c, self = $$13.$$s == null ? this : $$13.$$s;
 
-          return (("" + ((($c = $gvars['~']) === nil ? nil : $c['$[]'](1)))) + "f")['$%'](self.$cutime())}, $$25.$$s = self, $$25.$$arity = 0, $$25)), 'gsub', [/(%[-+.\d]*)Y/], ($$26 = function(){var self = $$26.$$s == null ? this : $$26.$$s, $c;
+          return (("" + ((($c = $gvars['~']) === nil ? nil : $c['$[]'](1)))) + "f")['$%'](self.$cutime())}, {$$arity: 0, $$s: self}), 'gsub', [/(%[-+.\d]*)Y/], function $$14(){var $c, self = $$14.$$s == null ? this : $$14.$$s;
 
-          return (("" + ((($c = $gvars['~']) === nil ? nil : $c['$[]'](1)))) + "f")['$%'](self.$cstime())}, $$26.$$s = self, $$26.$$arity = 0, $$26)), 'gsub', [/(%[-+.\d]*)t/], ($$27 = function(){var self = $$27.$$s == null ? this : $$27.$$s, $c;
+          return (("" + ((($c = $gvars['~']) === nil ? nil : $c['$[]'](1)))) + "f")['$%'](self.$cstime())}, {$$arity: 0, $$s: self}), 'gsub', [/(%[-+.\d]*)t/], function $$15(){var $c, self = $$15.$$s == null ? this : $$15.$$s;
 
-          return (("" + ((($c = $gvars['~']) === nil ? nil : $c['$[]'](1)))) + "f")['$%'](self.$total())}, $$27.$$s = self, $$27.$$arity = 0, $$27)), 'gsub', [/(%[-+.\d]*)r/], ($$28 = function(){var self = $$28.$$s == null ? this : $$28.$$s, $c;
+          return (("" + ((($c = $gvars['~']) === nil ? nil : $c['$[]'](1)))) + "f")['$%'](self.$total())}, {$$arity: 0, $$s: self}), 'gsub', [/(%[-+.\d]*)r/], function $$16(){var $c, self = $$16.$$s == null ? this : $$16.$$s;
 
-          return ((("" + "(") + ((($c = $gvars['~']) === nil ? nil : $c['$[]'](1)))) + "f)")['$%'](self.$real())}, $$28.$$s = self, $$28.$$arity = 0, $$28));
+          return ((("(") + ((($c = $gvars['~']) === nil ? nil : $c['$[]'](1)))) + "f)")['$%'](self.$real())}, {$$arity: 0, $$s: self});
         if ($truthy(format)) {
           return str['$%'](args)
         } else {
           return str
         };
-      }, $Tms_format$21.$$arity = -1);
+      }, -1);
       
-      Opal.def(self, '$to_s', $Tms_to_s$29 = function $$to_s() {
+      $def(self, '$to_s', function $$to_s() {
         var self = this;
 
         return self.$format()
-      }, $Tms_to_s$29.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$to_a', $Tms_to_a$30 = function $$to_a() {
+      $def(self, '$to_a', function $$to_a() {
         var self = this;
 
         return [self.label, self.utime, self.stime, self.cutime, self.cstime, self.real]
-      }, $Tms_to_a$30.$$arity = 0);
+      }, 0);
+      
+      $def(self, '$to_h', function $$to_h() {
+        var self = this;
+
+        return $hash2(["label", "utime", "stime", "cutime", "cstime", "real"], {"label": self.label, "utime": self.utime, "stime": self.stime, "cutime": self.cutime, "cstime": self.cstime, "real": self.real})
+      }, 0);
       self.$protected();
-      return (Opal.def(self, '$memberwise', $Tms_memberwise$31 = function $$memberwise(op, x) {
-        var self = this, $case = nil;
+      return $def(self, '$memberwise', function $$memberwise(op, x) {
+        var self = this, $ret_or_1 = nil;
 
-        return (function() {$case = x;
-        if ($$$($$($nesting, 'Benchmark'), 'Tms')['$===']($case)) {return $$$($$($nesting, 'Benchmark'), 'Tms').$new(self.$utime().$__send__(op, x.$utime()), self.$stime().$__send__(op, x.$stime()), self.$cutime().$__send__(op, x.$cutime()), self.$cstime().$__send__(op, x.$cstime()), self.$real().$__send__(op, x.$real()))}
-        else {return $$$($$($nesting, 'Benchmark'), 'Tms').$new(self.$utime().$__send__(op, x), self.$stime().$__send__(op, x), self.$cutime().$__send__(op, x), self.$cstime().$__send__(op, x), self.$real().$__send__(op, x))}})()
-      }, $Tms_memberwise$31.$$arity = 2), nil) && 'memberwise';
+        if ($eqeqeq($$$($$('Benchmark'), 'Tms'), ($ret_or_1 = x))) {
+          return $$$($$('Benchmark'), 'Tms').$new(self.$utime().$__send__(op, x.$utime()), self.$stime().$__send__(op, x.$stime()), self.$cutime().$__send__(op, x.$cutime()), self.$cstime().$__send__(op, x.$cstime()), self.$real().$__send__(op, x.$real()))
+        } else {
+          return $$$($$('Benchmark'), 'Tms').$new(self.$utime().$__send__(op, x), self.$stime().$__send__(op, x), self.$cutime().$__send__(op, x), self.$cstime().$__send__(op, x), self.$real().$__send__(op, x))
+        }
+      }, 2);
     })($nesting[0], null, $nesting);
-    Opal.const_set($nesting[0], 'CAPTION', $$$($$$($$($nesting, 'Benchmark'), 'Tms'), 'CAPTION'));
-    return Opal.const_set($nesting[0], 'FORMAT', $$$($$$($$($nesting, 'Benchmark'), 'Tms'), 'FORMAT'));
+    $const_set($nesting[0], 'CAPTION', $$$($$$($$('Benchmark'), 'Tms'), 'CAPTION'));
+    return $const_set($nesting[0], 'FORMAT', $$$($$$($$('Benchmark'), 'Tms'), 'FORMAT'));
   })($nesting[0], $nesting)
 };
diff --git a/opal/master/benchmark.min.js b/opal/master/benchmark.min.js
index 63a91cd2..b6571985 100644
--- a/opal/master/benchmark.min.js
+++ b/opal/master/benchmark.min.js
@@ -1 +1 @@
-Opal.modules.benchmark=function(Opal){function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}function $rb_times(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs*rhs:lhs["$*"](rhs)}Opal.top;var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$send=Opal.send,$truthy=Opal.truthy,$klass=Opal.klass,$alias=Opal.alias,$gvars=Opal.gvars;return Opal.add_stubs(["$sync","$sync=","$-","$+","$empty?","$print","$*","$new","$===","$each","$grep","$ljust","$shift","$label","$format","$list","$nil?","$benchmark","$to_proc","$width","$puts","$length","$inject","$measure","$rjust","$map","$start","$tap","$times","$clock_gettime","$utime","$stime","$cutime","$cstime","$module_function","$raise","$to_s","$<","$<<","$attr_reader","$real","$memberwise","$gsub","$dup","$%","$total","$protected","$__send__"]),function(self,$b){var $Benchmark_benchmark$1,$Benchmark_bm$3,$Benchmark_bmbm$4,$Benchmark_measure$8,$Benchmark_realtime$9,self=$module(self,"Benchmark"),$nesting=[self].concat($b);return Opal.const_set($nesting[0],"BENCHMARK_VERSION","2002-04-25"),Opal.def(self,"$benchmark",$Benchmark_benchmark$1=function($a,$b,$c,$d){var caption,label_width,format,labels,$$2,$post_args=$Benchmark_benchmark$1.$$p,$yield=$post_args||nil,self=this,sync=nil,$writer=nil,$ret_or_1=nil,$ret_or_2=nil,report=nil,results=nil;return $post_args&&($Benchmark_benchmark$1.$$p=null),0<($post_args=Opal.slice.call(arguments,0,arguments.length)).length&&(caption=$post_args[0],$post_args.splice(0,1)),null==caption&&(caption=""),0<$post_args.length&&(label_width=$post_args[0],$post_args.splice(0,1)),null==label_width&&(label_width=nil),0<$post_args.length&&(format=$post_args[0],$post_args.splice(0,1)),null==format&&(format=nil),labels=$post_args,function(){try{return sync=$$($nesting,"STDOUT").$sync(),$writer=[!0],$send($$($nesting,"STDOUT"),"sync=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)],label_width=$rb_plus(label_width=$truthy($ret_or_1=label_width)?$ret_or_1:0,1),format=$truthy($ret_or_2=format)?$ret_or_2:$$($nesting,"FORMAT"),$truthy(caption["$empty?"]())||self.$print($rb_plus($rb_times(" ",label_width),caption)),report=$$($nesting,"Report").$new(label_width,format),results=Opal.yield1($yield,report),$truthy($$($nesting,"Array")["$==="](results))&&$send(results.$grep($$($nesting,"Tms")),"each",[],(($$2=function(t){var self=null==$$2.$$s?this:$$2.$$s,$ret_or_4=nil,$ret_or_5=nil;return null==t&&(t=nil),self.$print(($truthy($ret_or_4=$truthy($ret_or_5=labels.$shift())?$ret_or_5:t.$label())?$ret_or_4:"").$ljust(label_width),t.$format(format))}).$$s=self,$$2.$$arity=1,$$2)),report.$list()}finally{$truthy(sync["$nil?"]())||($writer=[sync],$send($$($nesting,"STDOUT"),"sync=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)])}}()},$Benchmark_benchmark$1.$$arity=-1),Opal.def(self,"$bm",$Benchmark_bm$3=function($a,$b){var label_width,labels=$Benchmark_bm$3.$$p,blk=labels||nil;return labels&&($Benchmark_bm$3.$$p=null),labels&&($Benchmark_bm$3.$$p=null),0<(labels=Opal.slice.call(arguments,0,arguments.length)).length&&(label_width=labels[0],labels.splice(0,1)),null==label_width&&(label_width=0),labels=labels,$send(this,"benchmark",[$$($nesting,"CAPTION"),label_width,$$($nesting,"FORMAT")].concat(Opal.to_a(labels)),blk.$to_proc())},$Benchmark_bm$3.$$arity=-1),Opal.def(self,"$bmbm",$Benchmark_bmbm$4=function(width){var $$5,$$6,ets,$iter=$Benchmark_bmbm$4.$$p,$yield=$iter||nil,self=this,job=nil,sync=nil,$writer=nil;return $iter&&($Benchmark_bmbm$4.$$p=null),null==width&&(width=0),function(){try{return job=$$($nesting,"Job").$new(width),Opal.yield1($yield,job),width=$rb_plus(job.$width(),1),sync=$$($nesting,"STDOUT").$sync(),$writer=[!0],$send($$($nesting,"STDOUT"),"sync=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)],self.$puts("Rehearsal ".$ljust($rb_plus(width,$$($nesting,"CAPTION").$length()),"-")),ets=$send(job.$list(),"inject",[$$($nesting,"Tms").$new()],(($$5=function(sum,$a){var self=null==$$5.$$s?this:$$5.$$s,label=nil,item=nil,res=nil;return null==sum&&(sum=nil),null==$a&&($a=nil),$a=$a,label=null==($a=Opal.to_ary($a))[0]?nil:$a[0],item=null==$a[1]?nil:$a[1],self.$print(label.$ljust(width)),res=$send($$($nesting,"Benchmark"),"measure",[],item.$to_proc()),self.$print(res.$format()),$rb_plus(sum,res)}).$$s=self,$$5.$$arity=2,$$5.$$has_top_level_mlhs_arg=!0,$$5)).$format("total: %tsec"),self.$print((" "+ets+"\n\n").$rjust($rb_plus($rb_plus(width,$$($nesting,"CAPTION").$length()),2),"-")),self.$print($rb_plus($rb_times(" ",width),$$($nesting,"CAPTION"))),$send(job.$list(),"map",[],(($$6=function(label,item){var $$7,self=null==$$6.$$s?this:$$6.$$s;return null==label&&(label=nil),null==item&&(item=nil),$$($nesting,"GC").$start(),self.$print(label.$ljust(width)),$send($send($$($nesting,"Benchmark"),"measure",[label],item.$to_proc()),"tap",[],(($$7=function(res){var self=null==$$7.$$s?this:$$7.$$s;return null==res&&(res=nil),self.$print(res)}).$$s=self,$$7.$$arity=1,$$7))}).$$s=self,$$6.$$arity=2,$$6))}finally{$truthy(sync["$nil?"]())||($writer=[sync],$send($$($nesting,"STDOUT"),"sync=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)])}}()},$Benchmark_bmbm$4.$$arity=-1),$truthy(($b=$$($nesting,"Process","skip_raise"))&&$$$($b,"CLOCK_MONOTONIC","skip_raise")?"constant":nil)?Opal.const_set($nesting[0],"BENCHMARK_CLOCK",$$$($$($nesting,"Process"),"CLOCK_MONOTONIC")):Opal.const_set($nesting[0],"BENCHMARK_CLOCK",$$$($$($nesting,"Process"),"CLOCK_REALTIME")),Opal.def(self,"$measure",$Benchmark_measure$8=function(label){var r0,r1,$a=$Benchmark_measure$8.$$p,$yield=$a||nil,t0=nil,t1=nil;return $a&&($Benchmark_measure$8.$$p=null),null==label&&(label=""),t0=($a=[$$($nesting,"Process").$times(),$$($nesting,"Process").$clock_gettime($$($nesting,"BENCHMARK_CLOCK"))])[0],r0=$a[1],Opal.yieldX($yield,[]),t1=($a=[$$($nesting,"Process").$times(),$$($nesting,"Process").$clock_gettime($$($nesting,"BENCHMARK_CLOCK"))])[0],r1=$a[1],$$$($$($nesting,"Benchmark"),"Tms").$new($rb_minus(t1.$utime(),t0.$utime()),$rb_minus(t1.$stime(),t0.$stime()),$rb_minus(t1.$cutime(),t0.$cutime()),$rb_minus(t1.$cstime(),t0.$cstime()),$rb_minus(r1,r0),label)},$Benchmark_measure$8.$$arity=-1),Opal.def(self,"$realtime",$Benchmark_realtime$9=function(){var r0,$iter=$Benchmark_realtime$9.$$p,$yield=$iter||nil;return $iter&&($Benchmark_realtime$9.$$p=null),r0=$$($nesting,"Process").$clock_gettime($$($nesting,"BENCHMARK_CLOCK")),Opal.yieldX($yield,[]),$rb_minus($$($nesting,"Process").$clock_gettime($$($nesting,"BENCHMARK_CLOCK")),r0)},$Benchmark_realtime$9.$$arity=0),self.$module_function("benchmark","measure","realtime","bm","bmbm"),function(self,$Job_initialize$10){var $Job_item$11,$nesting=[self=$klass(self,null,"Job")].concat($Job_initialize$10);self.$$prototype.width=self.$$prototype.list=nil,Opal.def(self,"$initialize",$Job_initialize$10=function(width){return this.width=width,this.list=[]},$Job_initialize$10.$$arity=1),Opal.def(self,"$item",$Job_item$11=function(label){var w,lhs,rhs=$Job_item$11.$$p,blk=rhs||nil;return rhs&&($Job_item$11.$$p=null),rhs&&($Job_item$11.$$p=null),null==label&&(label=""),blk!==nil||this.$raise($$($nesting,"ArgumentError"),"no block"),w=(label=label.$to_s()).$length(),$truthy((lhs=this.width,rhs=w,"number"==typeof lhs&&"number"==typeof rhs?lhs<rhs:lhs["$<"](rhs)))&&(this.width=w),this.list["$<<"]([label,blk]),this},$Job_item$11.$$arity=-1),$alias(self,"report","item"),self.$attr_reader("list"),self.$attr_reader("width")}($nesting[0],$nesting),function(self,$Report_initialize$12){var $Report_item$13,$nesting=[self=$klass(self,null,"Report")].concat($Report_initialize$12);self.$$prototype.width=self.$$prototype.list=self.$$prototype.format=nil,Opal.def(self,"$initialize",$Report_initialize$12=function(width,$a){return null==width&&(width=0),null==$a&&($a=nil),$a=[width,$a,[]],this.width=$a[0],this.format=$a[1],this.list=$a[2],$a},$Report_initialize$12.$$arity=-1),Opal.def(self,"$item",$Report_item$13=function($a,$b){var label,res,format=$Report_item$13.$$p,blk=format||nil;return format&&($Report_item$13.$$p=null),format&&($Report_item$13.$$p=null),0<(format=Opal.slice.call(arguments,0,arguments.length)).length&&(label=format[0],format.splice(0,1)),null==label&&(label=""),format=format,this.$print(label.$to_s().$ljust(this.width)),this.list["$<<"](res=$send($$($nesting,"Benchmark"),"measure",[label],blk.$to_proc())),this.$print($send(res,"format",[this.format].concat(Opal.to_a(format)))),res},$Report_item$13.$$arity=-1),$alias(self,"report","item"),self.$attr_reader("list")}($nesting[0],$nesting),function($Tms_memberwise$31,$Tms_to_a$30){var $Tms_add$15,$Tms_add$excl$16,$nesting=[$Tms_memberwise$31=$klass($Tms_memberwise$31,null,"Tms")].concat($Tms_to_a$30);$Tms_memberwise$31.$$prototype.utime=$Tms_memberwise$31.$$prototype.stime=$Tms_memberwise$31.$$prototype.cutime=$Tms_memberwise$31.$$prototype.cstime=$Tms_memberwise$31.$$prototype.label=$Tms_memberwise$31.$$prototype.real=nil,Opal.const_set($nesting[0],"CAPTION","      user     system      total        real\n"),Opal.const_set($nesting[0],"FORMAT","%10.6u %10.6y %10.6t %10.6r\n"),$Tms_memberwise$31.$attr_reader("utime"),$Tms_memberwise$31.$attr_reader("stime"),$Tms_memberwise$31.$attr_reader("cutime"),$Tms_memberwise$31.$attr_reader("cstime"),$Tms_memberwise$31.$attr_reader("real"),$Tms_memberwise$31.$attr_reader("total"),$Tms_memberwise$31.$attr_reader("label"),Opal.def($Tms_memberwise$31,"$initialize",$Tms_to_a$30=function(utime,stime,cutime,cstime,real,$a){return null==utime&&(utime=0),null==stime&&(stime=0),null==cutime&&(cutime=0),null==cstime&&(cstime=0),null==real&&(real=0),null==$a&&($a=nil),$a=[utime,stime,cutime,cstime,real,$a.$to_s()],this.utime=$a[0],this.stime=$a[1],this.cutime=$a[2],this.cstime=$a[3],this.real=$a[4],this.label=$a[5],this.total=$rb_plus($rb_plus($rb_plus(this.utime,this.stime),this.cutime),this.cstime)},$Tms_to_a$30.$$arity=-1),Opal.def($Tms_memberwise$31,"$add",$Tms_add$15=function(){var $iter=$Tms_add$15.$$p,blk=$iter||nil;return $iter&&($Tms_add$15.$$p=null),$iter&&($Tms_add$15.$$p=null),$rb_plus(this,$send($$($nesting,"Benchmark"),"measure",[],blk.$to_proc()))},$Tms_add$15.$$arity=0),Opal.def($Tms_memberwise$31,"$add!",$Tms_add$excl$16=function(){var $iter=$Tms_add$excl$16.$$p,blk=$iter||nil,t=nil;return $iter&&($Tms_add$excl$16.$$p=null),$iter&&($Tms_add$excl$16.$$p=null),t=$send($$($nesting,"Benchmark"),"measure",[],blk.$to_proc()),this.utime=$rb_plus(this.$utime(),t.$utime()),this.stime=$rb_plus(this.$stime(),t.$stime()),this.cutime=$rb_plus(this.$cutime(),t.$cutime()),this.cstime=$rb_plus(this.$cstime(),t.$cstime()),this.real=$rb_plus(this.$real(),t.$real()),this},$Tms_add$excl$16.$$arity=0),Opal.def($Tms_memberwise$31,"$+",$Tms_to_a$30=function(other){return this.$memberwise("+",other)},$Tms_to_a$30.$$arity=1),Opal.def($Tms_memberwise$31,"$-",$Tms_to_a$30=function(other){return this.$memberwise("-",other)},$Tms_to_a$30.$$arity=1),Opal.def($Tms_memberwise$31,"$*",$Tms_to_a$30=function(x){return this.$memberwise("*",x)},$Tms_to_a$30.$$arity=1),Opal.def($Tms_memberwise$31,"$/",$Tms_to_a$30=function(x){return this.$memberwise("/",x)},$Tms_to_a$30.$$arity=1),Opal.def($Tms_memberwise$31,"$format",$Tms_to_a$30=function($a,$b){var format,$$22,$$23,$$24,$$25,$$26,$$27,$$28,str=nil,$ret_or_6=nil,args=Opal.slice.call(arguments,0,arguments.length);return 0<args.length&&(format=args[0],args.splice(0,1)),null==format&&(format=nil),args=args,str=$send($send($send($send($send($send($send(($truthy($ret_or_6=format)?$ret_or_6:$$($nesting,"FORMAT")).$dup(),"gsub",[/(%[-+.\d]*)n/],(($$22=function(){var $c,self=null==$$22.$$s?this:$$22.$$s;return((($c=$gvars["~"])===nil?nil:$c["$[]"](1))+"s")["$%"](self.$label())}).$$s=this,$$22.$$arity=0,$$22)),"gsub",[/(%[-+.\d]*)u/],(($$23=function(){var $c,self=null==$$23.$$s?this:$$23.$$s;return((($c=$gvars["~"])===nil?nil:$c["$[]"](1))+"f")["$%"](self.$utime())}).$$s=this,$$23.$$arity=0,$$23)),"gsub",[/(%[-+.\d]*)y/],(($$24=function(){var $c,self=null==$$24.$$s?this:$$24.$$s;return((($c=$gvars["~"])===nil?nil:$c["$[]"](1))+"f")["$%"](self.$stime())}).$$s=this,$$24.$$arity=0,$$24)),"gsub",[/(%[-+.\d]*)U/],(($$25=function(){var $c,self=null==$$25.$$s?this:$$25.$$s;return((($c=$gvars["~"])===nil?nil:$c["$[]"](1))+"f")["$%"](self.$cutime())}).$$s=this,$$25.$$arity=0,$$25)),"gsub",[/(%[-+.\d]*)Y/],(($$26=function(){var $c,self=null==$$26.$$s?this:$$26.$$s;return((($c=$gvars["~"])===nil?nil:$c["$[]"](1))+"f")["$%"](self.$cstime())}).$$s=this,$$26.$$arity=0,$$26)),"gsub",[/(%[-+.\d]*)t/],(($$27=function(){var $c,self=null==$$27.$$s?this:$$27.$$s;return((($c=$gvars["~"])===nil?nil:$c["$[]"](1))+"f")["$%"](self.$total())}).$$s=this,$$27.$$arity=0,$$27)),"gsub",[/(%[-+.\d]*)r/],(($$28=function(){var $c,self=null==$$28.$$s?this:$$28.$$s;return("("+(($c=$gvars["~"])===nil?nil:$c["$[]"](1))+"f)")["$%"](self.$real())}).$$s=this,$$28.$$arity=0,$$28)),$truthy(format)?str["$%"](args):str},$Tms_to_a$30.$$arity=-1),Opal.def($Tms_memberwise$31,"$to_s",$Tms_to_a$30=function(){return this.$format()},$Tms_to_a$30.$$arity=0),Opal.def($Tms_memberwise$31,"$to_a",$Tms_to_a$30=function(){return[this.label,this.utime,this.stime,this.cutime,this.cstime,this.real]},$Tms_to_a$30.$$arity=0),$Tms_memberwise$31.$protected(),Opal.def($Tms_memberwise$31,"$memberwise",$Tms_memberwise$31=function(op,x){var self=this,$case=nil;return $case=x,$$$($$($nesting,"Benchmark"),"Tms")["$==="]($case)?$$$($$($nesting,"Benchmark"),"Tms").$new(self.$utime().$__send__(op,x.$utime()),self.$stime().$__send__(op,x.$stime()),self.$cutime().$__send__(op,x.$cutime()),self.$cstime().$__send__(op,x.$cstime()),self.$real().$__send__(op,x.$real())):$$$($$($nesting,"Benchmark"),"Tms").$new(self.$utime().$__send__(op,x),self.$stime().$__send__(op,x),self.$cutime().$__send__(op,x),self.$cstime().$__send__(op,x),self.$real().$__send__(op,x))},$Tms_memberwise$31.$$arity=2)}($nesting[0],$nesting),Opal.const_set($nesting[0],"CAPTION",$$$($$$($$($nesting,"Benchmark"),"Tms"),"CAPTION")),Opal.const_set($nesting[0],"FORMAT",$$$($$$($$($nesting,"Benchmark"),"Tms"),"FORMAT"))}($nesting[0],$nesting)};
+Opal.modules.benchmark=function(Opal){var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$module=Opal.module,$const_set=Opal.const_set,$send=Opal.send,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$truthy=Opal.truthy,$rb_plus=Opal.rb_plus,$rb_times=Opal.rb_times,$def=Opal.def,$to_ary=Opal.to_ary,$klass=Opal.klass,$rb_lt=Opal.rb_lt,$alias=Opal.alias,$gvars=Opal.gvars,$hash2=Opal.hash2,$eqeqeq=Opal.eqeqeq;return Opal.add_stubs("sync,sync=,-,+,empty?,print,*,new,===,each,grep,ljust,shift,label,format,list,nil?,benchmark,to_proc,width,puts,length,inject,measure,rjust,map,start,tap,times,clock_gettime,utime,stime,cutime,cstime,module_function,raise,to_s,<,<<,attr_reader,real,memberwise,gsub,dup,%,total,protected,__send__"),function($base,$parent_nesting){var $b,self=$module($base,"Benchmark"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return $const_set($nesting[0],"BENCHMARK_VERSION","2002-04-25"),$def(self,"$benchmark",(function $$benchmark($a,$b,$c,$d){var $post_args,caption,label_width,format,labels,$yield=$$benchmark.$$p||nil,self=this,sync=nil,$writer=nil,$ret_or_1=nil,report=nil,results=nil;return delete $$benchmark.$$p,($post_args=Opal.slice.call(arguments)).length>0&&(caption=$post_args.shift()),null==caption&&(caption=""),$post_args.length>0&&(label_width=$post_args.shift()),null==label_width&&(label_width=nil),$post_args.length>0&&(format=$post_args.shift()),null==format&&(format=nil),labels=$post_args,function(){try{return sync=$$("STDOUT").$sync(),$writer=[!0],$send($$("STDOUT"),"sync=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],label_width=$truthy($ret_or_1=label_width)?$ret_or_1:0,label_width=$rb_plus(label_width,1),format=$truthy($ret_or_1=format)?$ret_or_1:$$("FORMAT"),$truthy(caption["$empty?"]())||self.$print($rb_plus($rb_times(" ",label_width),caption)),report=$$("Report").$new(label_width,format),results=Opal.yield1($yield,report),$truthy($ret_or_1=$$("Array")["$==="](results))&&$send(results.$grep($$("Tms")),"each",[],(function $$1(t){var $ret_or_2,$ret_or_3;return null==t&&(t=nil),(null==$$1.$$s?this:$$1.$$s).$print(($truthy($ret_or_2=$truthy($ret_or_3=labels.$shift())?$ret_or_3:t.$label())?$ret_or_2:"").$ljust(label_width),t.$format(format))}),{$$arity:1,$$s:self}),report.$list()}finally{$truthy(sync["$nil?"]())||($writer=[sync],$send($$("STDOUT"),"sync=",$to_a($writer)),$writer[$rb_minus($writer.length,1)])}}()}),-1),$def(self,"$bm",(function $$bm($a,$b){var $post_args,label_width,labels,blk=$$bm.$$p||nil,self=this;return delete $$bm.$$p,($post_args=Opal.slice.call(arguments)).length>0&&(label_width=$post_args.shift()),null==label_width&&(label_width=0),labels=$post_args,$send(self,"benchmark",[$$("CAPTION"),label_width,$$("FORMAT")].concat($to_a(labels)),blk.$to_proc())}),-1),$def(self,"$bmbm",(function $$bmbm(width){var $yield=$$bmbm.$$p||nil,self=this,job=nil,sync=nil,$writer=nil,ets=nil;return delete $$bmbm.$$p,null==width&&(width=0),function(){try{return job=$$("Job").$new(width),Opal.yield1($yield,job),width=$rb_plus(job.$width(),1),sync=$$("STDOUT").$sync(),$writer=[!0],$send($$("STDOUT"),"sync=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],self.$puts("Rehearsal ".$ljust($rb_plus(width,$$("CAPTION").$length()),"-")),ets=$send(job.$list(),"inject",[$$("Tms").$new()],(function $$2(sum,$mlhs_tmp1){var $a,self=null==$$2.$$s?this:$$2.$$s,label=nil,item=nil,res=nil;return null==sum&&(sum=nil),null==$mlhs_tmp1&&($mlhs_tmp1=nil),label=null==($a=$to_ary($mlhs_tmp1))[0]?nil:$a[0],item=null==$a[1]?nil:$a[1],self.$print(label.$ljust(width)),res=$send($$("Benchmark"),"measure",[],item.$to_proc()),self.$print(res.$format()),$rb_plus(sum,res)}),{$$arity:2,$$s:self,$$has_top_level_mlhs_arg:!0}).$format("total: %tsec"),self.$print((" "+ets+"\n\n").$rjust($rb_plus($rb_plus(width,$$("CAPTION").$length()),2),"-")),self.$print($rb_plus($rb_times(" ",width),$$("CAPTION"))),$send(job.$list(),"map",[],(function $$3(label,item){var self=null==$$3.$$s?this:$$3.$$s;return null==label&&(label=nil),null==item&&(item=nil),$$("GC").$start(),self.$print(label.$ljust(width)),$send($send($$("Benchmark"),"measure",[label],item.$to_proc()),"tap",[],(function $$4(res){return null==res&&(res=nil),(null==$$4.$$s?this:$$4.$$s).$print(res)}),{$$arity:1,$$s:self})}),{$$arity:2,$$s:self})}finally{$truthy(sync["$nil?"]())||($writer=[sync],$send($$("STDOUT"),"sync=",$to_a($writer)),$writer[$rb_minus($writer.length,1)])}}()}),-1),$truthy(($b=$$("Process","skip_raise"))&&$$$($b,"CLOCK_MONOTONIC","skip_raise")?"constant":nil)?$const_set($nesting[0],"BENCHMARK_CLOCK",$$$($$("Process"),"CLOCK_MONOTONIC")):$const_set($nesting[0],"BENCHMARK_CLOCK",$$$($$("Process"),"CLOCK_REALTIME")),$def(self,"$measure",(function $$measure(label){var $a,r0,r1,$yield=$$measure.$$p||nil,t0=nil,t1=nil;return delete $$measure.$$p,null==label&&(label=""),t0=($a=[$$("Process").$times(),$$("Process").$clock_gettime($$("BENCHMARK_CLOCK"))])[0],r0=$a[1],Opal.yieldX($yield,[]),t1=($a=[$$("Process").$times(),$$("Process").$clock_gettime($$("BENCHMARK_CLOCK"))])[0],r1=$a[1],$$$($$("Benchmark"),"Tms").$new($rb_minus(t1.$utime(),t0.$utime()),$rb_minus(t1.$stime(),t0.$stime()),$rb_minus(t1.$cutime(),t0.$cutime()),$rb_minus(t1.$cstime(),t0.$cstime()),$rb_minus(r1,r0),label)}),-1),$def(self,"$realtime",(function $$realtime(){var r0,$yield=$$realtime.$$p||nil;return delete $$realtime.$$p,r0=$$("Process").$clock_gettime($$("BENCHMARK_CLOCK")),Opal.yieldX($yield,[]),$rb_minus($$("Process").$clock_gettime($$("BENCHMARK_CLOCK")),r0)}),0),self.$module_function("benchmark","measure","realtime","bm","bmbm"),function($base,$super,$parent_nesting){var self=$klass($base,null,"Job"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;$proto.width=$proto.list=nil,$def(self,"$initialize",(function(width){return this.width=width,this.list=[]}),1),$def(self,"$item",(function $$item(label){var w,blk=$$item.$$p||nil;return delete $$item.$$p,null==label&&(label=""),blk===nil&&this.$raise($$("ArgumentError"),"no block"),w=(label=label.$to_s()).$length(),$truthy($rb_lt(this.width,w))&&(this.width=w),this.list["$<<"]([label,blk]),this}),-1),$alias(self,"report","item"),self.$attr_reader("list"),self.$attr_reader("width")}($nesting[0],0,$nesting),function($base,$super,$parent_nesting){var self=$klass($base,null,"Report"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;$proto.width=$proto.list=$proto.format=nil,$def(self,"$initialize",(function(width,format){var $a;return null==width&&(width=0),null==format&&(format=nil),$a=[width,format,[]],this.width=$a[0],this.format=$a[1],this.list=$a[2],$a}),-1),$def(self,"$item",(function $$item($a,$b){var $post_args,label,format,blk=$$item.$$p||nil,self=this,res=nil;return delete $$item.$$p,($post_args=Opal.slice.call(arguments)).length>0&&(label=$post_args.shift()),null==label&&(label=""),format=$post_args,self.$print(label.$to_s().$ljust(self.width)),self.list["$<<"](res=$send($$("Benchmark"),"measure",[label],blk.$to_proc())),self.$print($send(res,"format",[self.format].concat($to_a(format)))),res}),-1),$alias(self,"report","item"),self.$attr_reader("list")}($nesting[0],0,$nesting),function($base,$super,$parent_nesting){var self=$klass($base,null,"Tms"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;$proto.utime=$proto.stime=$proto.cutime=$proto.cstime=$proto.label=$proto.real=nil,$const_set($nesting[0],"CAPTION","      user     system      total        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$Tms_add$excl$5.$$p,t=$send($$("Benchmark"),"measure",[],blk.$to_proc()),this.utime=$rb_plus(this.$utime(),t.$utime()),this.stime=$rb_plus(this.$stime(),t.$stime()),this.cutime=$rb_plus(this.$cutime(),t.$cutime()),this.cstime=$rb_plus(this.$cstime(),t.$cstime()),this.real=$rb_plus(this.$real(),t.$real()),this}),0),$def(self,"$+",(function(other){return this.$memberwise("+",other)}),1),$def(self,"$-",(function(other){return this.$memberwise("-",other)}),1),$def(self,"$*",(function(x){return this.$memberwise("*",x)}),1),$def(self,"$/",(function(x){return this.$memberwise("/",x)}),1),$def(self,"$format",(function($a,$b){var $post_args,format,args,self=this,str=nil,$ret_or_1=nil;return($post_args=Opal.slice.call(arguments)).length>0&&(format=$post_args.shift()),null==format&&(format=nil),args=$post_args,str=$send($send($send($send($send($send($send(($truthy($ret_or_1=format)?$ret_or_1:$$("FORMAT")).$dup(),"gsub",[/(%[-+.\d]*)n/],(function $$10(){var $c,self=null==$$10.$$s?this:$$10.$$s;return((($c=$gvars["~"])===nil?nil:$c["$[]"](1))+"s")["$%"](self.$label())}),{$$arity:0,$$s:self}),"gsub",[/(%[-+.\d]*)u/],(function $$11(){var $c,self=null==$$11.$$s?this:$$11.$$s;return((($c=$gvars["~"])===nil?nil:$c["$[]"](1))+"f")["$%"](self.$utime())}),{$$arity:0,$$s:self}),"gsub",[/(%[-+.\d]*)y/],(function $$12(){var $c,self=null==$$12.$$s?this:$$12.$$s;return((($c=$gvars["~"])===nil?nil:$c["$[]"](1))+"f")["$%"](self.$stime())}),{$$arity:0,$$s:self}),"gsub",[/(%[-+.\d]*)U/],(function $$13(){var $c,self=null==$$13.$$s?this:$$13.$$s;return((($c=$gvars["~"])===nil?nil:$c["$[]"](1))+"f")["$%"](self.$cutime())}),{$$arity:0,$$s:self}),"gsub",[/(%[-+.\d]*)Y/],(function $$14(){var $c,self=null==$$14.$$s?this:$$14.$$s;return((($c=$gvars["~"])===nil?nil:$c["$[]"](1))+"f")["$%"](self.$cstime())}),{$$arity:0,$$s:self}),"gsub",[/(%[-+.\d]*)t/],(function $$15(){var $c,self=null==$$15.$$s?this:$$15.$$s;return((($c=$gvars["~"])===nil?nil:$c["$[]"](1))+"f")["$%"](self.$total())}),{$$arity:0,$$s:self}),"gsub",[/(%[-+.\d]*)r/],(function $$16(){var $c,self=null==$$16.$$s?this:$$16.$$s;return("("+(($c=$gvars["~"])===nil?nil:$c["$[]"](1))+"f)")["$%"](self.$real())}),{$$arity:0,$$s:self}),$truthy(format)?str["$%"](args):str}),-1),$def(self,"$to_s",(function(){return this.$format()}),0),$def(self,"$to_a",(function(){return[this.label,this.utime,this.stime,this.cutime,this.cstime,this.real]}),0),$def(self,"$to_h",(function(){return $hash2(["label","utime","stime","cutime","cstime","real"],{label:this.label,utime:this.utime,stime:this.stime,cutime:this.cutime,cstime:this.cstime,real:this.real})}),0),self.$protected(),$def(self,"$memberwise",(function(op,x){return $eqeqeq($$$($$("Benchmark"),"Tms"),x)?$$$($$("Benchmark"),"Tms").$new(this.$utime().$__send__(op,x.$utime()),this.$stime().$__send__(op,x.$stime()),this.$cutime().$__send__(op,x.$cutime()),this.$cstime().$__send__(op,x.$cstime()),this.$real().$__send__(op,x.$real())):$$$($$("Benchmark"),"Tms").$new(this.$utime().$__send__(op,x),this.$stime().$__send__(op,x),this.$cutime().$__send__(op,x),this.$cstime().$__send__(op,x),this.$real().$__send__(op,x))}),2)}($nesting[0],0,$nesting),$const_set($nesting[0],"CAPTION",$$$($$$($$("Benchmark"),"Tms"),"CAPTION")),$const_set($nesting[0],"FORMAT",$$$($$$($$("Benchmark"),"Tms"),"FORMAT"))}($nesting[0],$nesting)};
diff --git a/opal/master/benchmark.min.js.gz b/opal/master/benchmark.min.js.gz
index 3700246d..b8b87dc0 100644
Binary files a/opal/master/benchmark.min.js.gz and b/opal/master/benchmark.min.js.gz differ
diff --git a/opal/master/bigdecimal.js b/opal/master/bigdecimal.js
index aa6f0c57..f983d487 100644
--- a/opal/master/bigdecimal.js
+++ b/opal/master/bigdecimal.js
@@ -1,125 +1,114 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["js"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $truthy = Opal.truthy, $alias = Opal.alias;
+Opal.modules["js"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $def = Opal.def, $truthy = Opal.truthy, $alias = Opal.alias;
 
-  Opal.add_stubs(['$insert', '$<<', '$global', '$extend']);
-  return (function($base, $parent_nesting) {
+  Opal.add_stubs('insert,<<,global,extend');
+  return (function($base) {
     var self = $module($base, 'JS');
 
-    var $nesting = [self].concat($parent_nesting), $JS_delete$1, $JS_global$2, $JS_in$3, $JS_instanceof$4, $JS_new$5, $JS_new$6, $JS_typeof$7, $JS_void$8, $JS_call$9, $JS_$$$10;
-
     
     
-    Opal.def(self, '$delete', $JS_delete$1 = function(object, property) {
-      var self = this;
-
+    
+    $def(self, '$delete', function $JS_delete$1(object, property) {
+      
       return delete object[property]
-    }, $JS_delete$1.$$arity = 2);
+    }, 2);
     
-    Opal.def(self, '$global', $JS_global$2 = function $$global() {
-      var self = this;
-
+    $def(self, '$global', function $$global() {
+      
       return Opal.global;
-    }, $JS_global$2.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$in', $JS_in$3 = function(property, object) {
-      var self = this;
-
+    $def(self, '$in', function $JS_in$2(property, object) {
+      
       return property in object
-    }, $JS_in$3.$$arity = 2);
+    }, 2);
     
-    Opal.def(self, '$instanceof', $JS_instanceof$4 = function(value, func) {
-      var self = this;
-
+    $def(self, '$instanceof', function $JS_instanceof$3(value, func) {
+      
       return value instanceof func
-    }, $JS_instanceof$4.$$arity = 2);
+    }, 2);
     if ($truthy(typeof Function.prototype.bind == 'function')) {
       
-      Opal.def(self, '$new', $JS_new$5 = function(func, $a) {
-        var $iter = $JS_new$5.$$p, block = $iter || nil, $post_args, args, self = this;
+      $def(self, '$new', function $JS_new$4(func, $a) {
+        var block = $JS_new$4.$$p || nil, $post_args, args;
 
-        if ($iter) $JS_new$5.$$p = null;
-        
+        delete $JS_new$4.$$p;
         
-        if ($iter) $JS_new$5.$$p = null;;
+        ;
         
-        $post_args = Opal.slice.call(arguments, 1, arguments.length);
+        $post_args = Opal.slice.call(arguments, 1);
         
         args = $post_args;;
         args.$insert(0, this);
         if ($truthy(block)) {
-          args['$<<'](block)};
+          args['$<<'](block)
+        };
         return new (func.bind.apply(func, args))();
-      }, $JS_new$5.$$arity = -2)
+      }, -2)
     } else {
       
-      Opal.def(self, '$new', $JS_new$6 = function(func, $a) {
-        var $iter = $JS_new$6.$$p, block = $iter || nil, $post_args, args, self = this, f = nil;
+      $def(self, '$new', function $JS_new$5(func, $a) {
+        var block = $JS_new$5.$$p || nil, $post_args, args, f = nil;
 
-        if ($iter) $JS_new$6.$$p = null;
-        
+        delete $JS_new$5.$$p;
         
-        if ($iter) $JS_new$6.$$p = null;;
+        ;
         
-        $post_args = Opal.slice.call(arguments, 1, arguments.length);
+        $post_args = Opal.slice.call(arguments, 1);
         
         args = $post_args;;
         if ($truthy(block)) {
-          args['$<<'](block)};
+          args['$<<'](block)
+        };
         f = function(){return func.apply(this, args)};
         f["prototype"] = func["prototype"];
         return new f();;
-      }, $JS_new$6.$$arity = -2)
+      }, -2)
     };
     
-    Opal.def(self, '$typeof', $JS_typeof$7 = function(value) {
-      var self = this;
-
+    $def(self, '$typeof', function $JS_typeof$6(value) {
+      
       return typeof value
-    }, $JS_typeof$7.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$void', $JS_void$8 = function(expr) {
-      var self = this;
-
+    $def(self, '$void', function $JS_void$7(expr) {
+      
       return void expr
-    }, $JS_void$8.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$call', $JS_call$9 = function $$call(func, $a) {
-      var $iter = $JS_call$9.$$p, block = $iter || nil, $post_args, args, self = this, g = nil;
+    $def(self, '$call', function $$call(func, $a) {
+      var block = $$call.$$p || nil, $post_args, args, self = this, g = nil;
 
-      if ($iter) $JS_call$9.$$p = null;
+      delete $$call.$$p;
       
+      ;
       
-      if ($iter) $JS_call$9.$$p = null;;
-      
-      $post_args = Opal.slice.call(arguments, 1, arguments.length);
+      $post_args = Opal.slice.call(arguments, 1);
       
       args = $post_args;;
       g = self.$global();
       if ($truthy(block)) {
-        args['$<<'](block)};
+        args['$<<'](block)
+      };
       return g[func].apply(g, args);
-    }, $JS_call$9.$$arity = -2);
-    $alias(self, "method_missing", "call");
+    }, -2);
     
-    Opal.def(self, '$[]', $JS_$$$10 = function(name) {
-      var self = this;
-
+    $def(self, '$[]', function $JS_$$$8(name) {
+      
       return Opal.global[name]
-    }, $JS_$$$10.$$arity = 1);
+    }, 1);
+    $alias(self, "method_missing", "call");
     return self.$extend(self);
-  })($nesting[0], $nesting)
+  })($nesting[0])
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["bigdecimal/bignumber"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass;
+Opal.modules["bigdecimal/bignumber"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $klass = Opal.klass;
 
-  return (function($base, $super, $parent_nesting) {
+  return (function($base, $super) {
     var self = $klass($base, $super, 'BigDecimal');
 
-    var $nesting = [self].concat($parent_nesting);
-
+    
     
     var define = function (f) { Opal.const_set(self, 'BigNumber', f()); };
     define.amd = true;
@@ -131,60 +120,39 @@ Opal.modules["bigdecimal/bignumber"] = function(Opal) {
     /* eslint-enable */
 
   
-  })($nesting[0], $$($nesting, 'Numeric'), $nesting)
+  })($nesting[0], $$('Numeric'))
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["bigdecimal"] = function(Opal) {
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_ge(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs >= rhs : lhs['$>='](rhs);
-  }
-  function $rb_divide(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs / rhs : lhs['$/'](rhs);
-  }
-  var $new$2, self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $module = Opal.module, $hash2 = Opal.hash2, $send = Opal.send, $hash = Opal.hash, $truthy = Opal.truthy, $alias = Opal.alias, $send2 = Opal.send2, $find_super = Opal.find_super;
-
-  Opal.add_stubs(['$require', '$allocate', '$initialize', '$warn', '$BigDecimal', '$===', '$attr_reader', '$new', '$class', '$bignumber', '$nan?', '$nil?', '$raise', '$<', '$coerce', '$>', '$mode', '$>=', '$==', '$/', '$zero?', '$infinite?', '$finite?']);
-  
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'BigDecimal');
-
-    var $nesting = [self].concat($parent_nesting);
+Opal.modules["bigdecimal"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $klass = Opal.klass, $module = Opal.module, $def = Opal.def, $hash2 = Opal.hash2, $send = Opal.send, $to_a = Opal.to_a, $hash = Opal.hash, $defs = Opal.defs, $const_set = Opal.const_set, $truthy = Opal.truthy, $eqeqeq = Opal.eqeqeq, $send2 = Opal.send2, $find_super = Opal.find_super, $rb_lt = Opal.rb_lt, $to_ary = Opal.to_ary, $rb_gt = Opal.rb_gt, $rb_ge = Opal.rb_ge, $eqeq = Opal.eqeq, $rb_divide = Opal.rb_divide, $alias = Opal.alias;
 
-    return nil
-  })($nesting[0], $$($nesting, 'Numeric'), $nesting);
+  Opal.add_stubs('require,allocate,initialize,warn,BigDecimal,===,attr_reader,new,class,bignumber,nan?,nil?,raise,<,coerce,>,mode,>=,==,/,zero?,infinite?,finite?');
+  
+  $klass($nesting[0], $$('Numeric'), 'BigDecimal');
   self.$require("js");
   self.$require("bigdecimal/bignumber");
   (function($base, $parent_nesting) {
     var self = $module($base, 'Kernel');
 
-    var $nesting = [self].concat($parent_nesting), $Kernel_BigDecimal$1;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-    return (Opal.def(self, '$BigDecimal', $Kernel_BigDecimal$1 = function $$BigDecimal(initial, digits) {
-      var self = this, bigdecimal = nil;
+    return $def(self, '$BigDecimal', function $$BigDecimal(initial, digits) {
+      var bigdecimal = nil;
 
       
       
-      if (digits == null) {
-        digits = 0;
-      };
-      bigdecimal = $$($nesting, 'BigDecimal').$allocate();
+      if (digits == null) digits = 0;;
+      bigdecimal = $$('BigDecimal').$allocate();
       bigdecimal.$initialize(initial, digits);
       return bigdecimal;
-    }, $Kernel_BigDecimal$1.$$arity = -2), nil) && 'BigDecimal'
+    }, -2)
   })($nesting[0], $nesting);
-  Opal.defs($$($nesting, 'BigDecimal'), '$new', $new$2 = function($a, $b) {
+  $defs($$('BigDecimal'), '$new', function $new$1($a, $b) {
     var $post_args, $kwargs, args, kwargs, self = this;
 
     
     
-    $post_args = Opal.slice.call(arguments, 0, arguments.length);
+    $post_args = Opal.slice.call(arguments);
     
     $kwargs = Opal.extract_kwargs($post_args);
     
@@ -198,367 +166,321 @@ Opal.modules["bigdecimal"] = function(Opal) {
     
     kwargs = Opal.kwrestargs($kwargs, {});;
     self.$warn("BigDecimal.new is deprecated; use BigDecimal() method instead.", $hash2(["uplevel"], {"uplevel": 1}));
-    return $send(self, 'BigDecimal', Opal.to_a(args).concat([Opal.to_hash(kwargs)]));
-  }, $new$2.$$arity = -1);
+    return $send(self, 'BigDecimal', $to_a(args).concat([Opal.to_hash(kwargs)]));
+  }, -1);
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'BigDecimal');
 
-    var $nesting = [self].concat($parent_nesting), $BigDecimal_limit$3, $BigDecimal_mode$4, $BigDecimal_initialize$5, $BigDecimal_$eq_eq$6, $BigDecimal_$lt_eq_gt$7, $BigDecimal_$lt$8, $BigDecimal_$lt_eq$9, $BigDecimal_$gt$10, $BigDecimal_$gt_eq$11, $BigDecimal_abs$12, $BigDecimal_add$13, $BigDecimal_ceil$14, $BigDecimal_coerce$15, $BigDecimal_div$16, $BigDecimal_finite$ques$17, $BigDecimal_infinite$ques$18, $BigDecimal_minus$19, $BigDecimal_mult$20, $BigDecimal_nan$ques$21, $BigDecimal_quo$22, $BigDecimal_sign$23, $BigDecimal_sub$24, $BigDecimal_to_f$25, $BigDecimal_to_s$26, $BigDecimal_zero$ques$27;
-
-    
-    Opal.const_set($nesting[0], 'ROUND_MODE', 256);
-    Opal.const_set($nesting[0], 'ROUND_UP', 0);
-    Opal.const_set($nesting[0], 'ROUND_DOWN', 1);
-    Opal.const_set($nesting[0], 'ROUND_CEILING', 2);
-    Opal.const_set($nesting[0], 'ROUND_FLOOR', 3);
-    Opal.const_set($nesting[0], 'ROUND_HALF_UP', 4);
-    Opal.const_set($nesting[0], 'ROUND_HALF_DOWN', 5);
-    Opal.const_set($nesting[0], 'ROUND_HALF_EVEN', 6);
-    Opal.const_set($nesting[0], 'SIGN_NaN', 0);
-    Opal.const_set($nesting[0], 'SIGN_POSITIVE_ZERO', 1);
-    Opal.const_set($nesting[0], 'SIGN_NEGATIVE_ZERO', -1);
-    Opal.const_set($nesting[0], 'SIGN_POSITIVE_FINITE', 2);
-    Opal.const_set($nesting[0], 'SIGN_NEGATIVE_FINITE', -2);
-    Opal.const_set($nesting[0], 'SIGN_POSITIVE_INFINITE', 3);
-    Opal.const_set($nesting[0], 'SIGN_NEGATIVE_INFINITE', -3);
-    Opal.defs(self, '$limit', $BigDecimal_limit$3 = function $$limit(digits) {
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+    
+    $const_set($nesting[0], 'ROUND_MODE', 256);
+    $const_set($nesting[0], 'ROUND_UP', 0);
+    $const_set($nesting[0], 'ROUND_DOWN', 1);
+    $const_set($nesting[0], 'ROUND_CEILING', 2);
+    $const_set($nesting[0], 'ROUND_FLOOR', 3);
+    $const_set($nesting[0], 'ROUND_HALF_UP', 4);
+    $const_set($nesting[0], 'ROUND_HALF_DOWN', 5);
+    $const_set($nesting[0], 'ROUND_HALF_EVEN', 6);
+    $const_set($nesting[0], 'SIGN_NaN', 0);
+    $const_set($nesting[0], 'SIGN_POSITIVE_ZERO', 1);
+    $const_set($nesting[0], 'SIGN_NEGATIVE_ZERO', -1);
+    $const_set($nesting[0], 'SIGN_POSITIVE_FINITE', 2);
+    $const_set($nesting[0], 'SIGN_NEGATIVE_FINITE', -2);
+    $const_set($nesting[0], 'SIGN_POSITIVE_INFINITE', 3);
+    $const_set($nesting[0], 'SIGN_NEGATIVE_INFINITE', -3);
+    $defs(self, '$limit', function $$limit(digits) {
       var self = this;
       if (self.digits == null) self.digits = nil;
 
       
       
-      if (digits == null) {
-        digits = nil;
-      };
+      if (digits == null) digits = nil;;
       if ($truthy(digits)) {
-        self.digits = digits};
+        self.digits = digits
+      };
       return self.digits;
-    }, $BigDecimal_limit$3.$$arity = -1);
-    Opal.defs(self, '$mode', $BigDecimal_mode$4 = function $$mode(mode, value) {
-      var self = this, $case = nil, $ret_or_1 = nil;
+    }, -1);
+    $defs(self, '$mode', function $$mode(mode, value) {
+      var self = this, $ret_or_1 = nil, $ret_or_2 = nil;
       if (self.round_mode == null) self.round_mode = nil;
 
       
       
-      if (value == null) {
-        value = nil;
-      };
-      return (function() {$case = mode;
-      if ($$($nesting, 'ROUND_MODE')['$===']($case)) {
-      if ($truthy(value)) {
-        self.round_mode = value};
-      if ($truthy(($ret_or_1 = self.round_mode))) {
-        return $ret_or_1
+      if (value == null) value = nil;;
+      if ($eqeqeq($$('ROUND_MODE'), ($ret_or_1 = mode))) {
+        
+        if ($truthy(value)) {
+          self.round_mode = value
+        };
+        if ($truthy(($ret_or_2 = self.round_mode))) {
+          return $ret_or_2
+        } else {
+          return $$('ROUND_HALF_UP')
+        };
       } else {
-        return $$($nesting, 'ROUND_HALF_UP')
-      };}
-      else { return nil }})();
-    }, $BigDecimal_mode$4.$$arity = -2);
+        return nil
+      };
+    }, -2);
     self.$attr_reader("bignumber");
     
-    Opal.def(self, '$initialize', $BigDecimal_initialize$5 = function $$initialize(initial, digits) {
+    $def(self, '$initialize', function $$initialize(initial, digits) {
       var self = this;
 
       
       
-      if (digits == null) {
-        digits = 0;
-      };
-      return (self.bignumber = $$($nesting, 'JS').$new($$($nesting, 'BigNumber'), initial));
-    }, $BigDecimal_initialize$5.$$arity = -2);
+      if (digits == null) digits = 0;;
+      return (self.bignumber = $$('JS').$new($$('BigNumber'), initial));
+    }, -2);
     
-    Opal.def(self, '$==', $BigDecimal_$eq_eq$6 = function(other) {
-      var self = this, $case = nil;
+    $def(self, '$==', function $BigDecimal_$eq_eq$2(other) {
+      var self = this, $ret_or_1 = nil;
 
-      return (function() {$case = other;
-      if (self.$class()['$===']($case)) {return self.$bignumber().equals(other.$bignumber())}
-      else if ($$($nesting, 'Number')['$===']($case)) {return self.$bignumber().equals(other)}
-      else {return false}})()
-    }, $BigDecimal_$eq_eq$6.$$arity = 1);
-    $alias(self, "===", "==");
+      if ($eqeqeq(self.$class(), ($ret_or_1 = other))) {
+        return self.$bignumber().equals(other.$bignumber())
+      } else if ($eqeqeq($$('Number'), $ret_or_1)) {
+        return self.$bignumber().equals(other)
+      } else {
+        return false
+      }
+    }, 1);
     
-    Opal.def(self, '$<=>', $BigDecimal_$lt_eq_gt$7 = function(other) {
-      var self = this, result = nil, $case = nil;
+    $def(self, '$<=>', function $BigDecimal_$lt_eq_gt$3(other) {
+      var self = this, result = nil, $ret_or_1 = nil;
 
       
-      result = (function() {$case = other;
-      if (self.$class()['$===']($case)) {return self.$bignumber().comparedTo(other.$bignumber())}
-      else if ($$($nesting, 'Number')['$===']($case)) {return self.$bignumber().comparedTo(other)}
-      else { return nil }})();
+      result = ($eqeqeq(self.$class(), ($ret_or_1 = other)) ? (self.$bignumber().comparedTo(other.$bignumber())) : ($eqeqeq($$('Number'), $ret_or_1) ? (self.$bignumber().comparedTo(other)) : (nil)));
       return result === null ? nil : result;
-    }, $BigDecimal_$lt_eq_gt$7.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$<', $BigDecimal_$lt$8 = function(other) {
-      var $iter = $BigDecimal_$lt$8.$$p, $yield = $iter || nil, self = this, $ret_or_2 = nil, $ret_or_3 = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+    $def(self, '$<', function $BigDecimal_$lt$4(other) {
+      var $yield = $BigDecimal_$lt$4.$$p || nil, self = this;
 
-      if ($iter) $BigDecimal_$lt$8.$$p = null;
-      // Prepare super implicit arguments
-      for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-        $zuper[$zuper_i] = arguments[$zuper_i];
-      }
+      delete $BigDecimal_$lt$4.$$p;
       
-      if ($truthy((function() {if ($truthy(($ret_or_2 = self['$nan?']()))) {
-        return $ret_or_2
-      } else if ($truthy(($ret_or_3 = other))) {
-        return other['$nan?']()
-      } else {
-        return $ret_or_3
-      }; return nil; })())) {
-        return false};
-      return $send2(self, $find_super(self, '<', $BigDecimal_$lt$8, false, true), '<', $zuper, $iter);
-    }, $BigDecimal_$lt$8.$$arity = 1);
-    
-    Opal.def(self, '$<=', $BigDecimal_$lt_eq$9 = function(other) {
-      var $iter = $BigDecimal_$lt_eq$9.$$p, $yield = $iter || nil, self = this, $ret_or_4 = nil, $ret_or_5 = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
-
-      if ($iter) $BigDecimal_$lt_eq$9.$$p = null;
-      // Prepare super implicit arguments
-      for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-        $zuper[$zuper_i] = arguments[$zuper_i];
-      }
+      if (($truthy(self['$nan?']()) || (($truthy(other) && ($truthy(other['$nan?']())))))) {
+        return false
+      };
+      return $send2(self, $find_super(self, '<', $BigDecimal_$lt$4, false, true), '<', [other], $yield);
+    }, 1);
+    
+    $def(self, '$<=', function $BigDecimal_$lt_eq$5(other) {
+      var $yield = $BigDecimal_$lt_eq$5.$$p || nil, self = this;
+
+      delete $BigDecimal_$lt_eq$5.$$p;
       
-      if ($truthy((function() {if ($truthy(($ret_or_4 = self['$nan?']()))) {
-        return $ret_or_4
-      } else if ($truthy(($ret_or_5 = other))) {
-        return other['$nan?']()
-      } else {
-        return $ret_or_5
-      }; return nil; })())) {
-        return false};
-      return $send2(self, $find_super(self, '<=', $BigDecimal_$lt_eq$9, false, true), '<=', $zuper, $iter);
-    }, $BigDecimal_$lt_eq$9.$$arity = 1);
-    
-    Opal.def(self, '$>', $BigDecimal_$gt$10 = function(other) {
-      var $iter = $BigDecimal_$gt$10.$$p, $yield = $iter || nil, self = this, $ret_or_6 = nil, $ret_or_7 = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
-
-      if ($iter) $BigDecimal_$gt$10.$$p = null;
-      // Prepare super implicit arguments
-      for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-        $zuper[$zuper_i] = arguments[$zuper_i];
-      }
+      if (($truthy(self['$nan?']()) || (($truthy(other) && ($truthy(other['$nan?']())))))) {
+        return false
+      };
+      return $send2(self, $find_super(self, '<=', $BigDecimal_$lt_eq$5, false, true), '<=', [other], $yield);
+    }, 1);
+    
+    $def(self, '$>', function $BigDecimal_$gt$6(other) {
+      var $yield = $BigDecimal_$gt$6.$$p || nil, self = this;
+
+      delete $BigDecimal_$gt$6.$$p;
       
-      if ($truthy((function() {if ($truthy(($ret_or_6 = self['$nan?']()))) {
-        return $ret_or_6
-      } else if ($truthy(($ret_or_7 = other))) {
-        return other['$nan?']()
-      } else {
-        return $ret_or_7
-      }; return nil; })())) {
-        return false};
-      return $send2(self, $find_super(self, '>', $BigDecimal_$gt$10, false, true), '>', $zuper, $iter);
-    }, $BigDecimal_$gt$10.$$arity = 1);
-    
-    Opal.def(self, '$>=', $BigDecimal_$gt_eq$11 = function(other) {
-      var $iter = $BigDecimal_$gt_eq$11.$$p, $yield = $iter || nil, self = this, $ret_or_8 = nil, $ret_or_9 = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
-
-      if ($iter) $BigDecimal_$gt_eq$11.$$p = null;
-      // Prepare super implicit arguments
-      for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-        $zuper[$zuper_i] = arguments[$zuper_i];
-      }
+      if (($truthy(self['$nan?']()) || (($truthy(other) && ($truthy(other['$nan?']())))))) {
+        return false
+      };
+      return $send2(self, $find_super(self, '>', $BigDecimal_$gt$6, false, true), '>', [other], $yield);
+    }, 1);
+    
+    $def(self, '$>=', function $BigDecimal_$gt_eq$7(other) {
+      var $yield = $BigDecimal_$gt_eq$7.$$p || nil, self = this;
+
+      delete $BigDecimal_$gt_eq$7.$$p;
       
-      if ($truthy((function() {if ($truthy(($ret_or_8 = self['$nan?']()))) {
-        return $ret_or_8
-      } else if ($truthy(($ret_or_9 = other))) {
-        return other['$nan?']()
-      } else {
-        return $ret_or_9
-      }; return nil; })())) {
-        return false};
-      return $send2(self, $find_super(self, '>=', $BigDecimal_$gt_eq$11, false, true), '>=', $zuper, $iter);
-    }, $BigDecimal_$gt_eq$11.$$arity = 1);
+      if (($truthy(self['$nan?']()) || (($truthy(other) && ($truthy(other['$nan?']())))))) {
+        return false
+      };
+      return $send2(self, $find_super(self, '>=', $BigDecimal_$gt_eq$7, false, true), '>=', [other], $yield);
+    }, 1);
     
-    Opal.def(self, '$abs', $BigDecimal_abs$12 = function $$abs() {
+    $def(self, '$abs', function $$abs() {
       var self = this;
 
       return self.$class().$new(self.$bignumber().abs())
-    }, $BigDecimal_abs$12.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$add', $BigDecimal_add$13 = function $$add(other, digits) {
+    $def(self, '$add', function $$add(other, digits) {
       var $a, $b, self = this, _ = nil, result = nil;
 
       
       
-      if (digits == null) {
-        digits = 0;
-      };
+      if (digits == null) digits = 0;;
       if ($truthy(digits['$nil?']())) {
-        self.$raise($$($nesting, 'TypeError'), "wrong argument type nil (expected Fixnum)")};
+        self.$raise($$('TypeError'), "wrong argument type nil (expected Fixnum)")
+      };
       if ($truthy($rb_lt(digits, 0))) {
-        self.$raise($$($nesting, 'ArgumentError'), "argument must be positive")};
-      $b = self.$coerce(other), $a = Opal.to_ary($b), (other = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $b;
+        self.$raise($$('ArgumentError'), "argument must be positive")
+      };
+      $b = self.$coerce(other), $a = $to_ary($b), (other = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $b;
       result = self.$bignumber().plus(other.$bignumber());
       if ($truthy($rb_gt(digits, 0))) {
-        result = result.toDigits(digits, self.$class().$mode($$($nesting, 'ROUND_MODE')))};
+        result = result.toDigits(digits, self.$class().$mode($$('ROUND_MODE')))
+      };
       return self.$class().$new(result);
-    }, $BigDecimal_add$13.$$arity = -2);
-    $alias(self, "+", "add");
+    }, -2);
     
-    Opal.def(self, '$ceil', $BigDecimal_ceil$14 = function $$ceil(n) {
+    $def(self, '$ceil', function $$ceil(n) {
       var self = this;
 
       
       
-      if (n == null) {
-        n = nil;
-      };
-      if ($truthy(self.$bignumber().isFinite())) {
-      } else {
-        self.$raise($$($nesting, 'FloatDomainError'), "Computation results to 'Infinity'")
+      if (n == null) n = nil;;
+      if (!$truthy(self.$bignumber().isFinite())) {
+        self.$raise($$('FloatDomainError'), "Computation results to 'Infinity'")
       };
       if ($truthy(n['$nil?']())) {
-        return self.$bignumber().round(0, $$($nesting, 'ROUND_CEILING')).toNumber()
+        return self.$bignumber().round(0, $$('ROUND_CEILING')).toNumber()
       } else if ($truthy($rb_ge(n, 0))) {
-        return self.$class().$new(self.$bignumber().round(n, $$($nesting, 'ROUND_CEILING')))
+        return self.$class().$new(self.$bignumber().round(n, $$('ROUND_CEILING')))
       } else {
-        return self.$class().$new(self.$bignumber().round(0, $$($nesting, 'ROUND_CEILING')))
+        return self.$class().$new(self.$bignumber().round(0, $$('ROUND_CEILING')))
       };
-    }, $BigDecimal_ceil$14.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$coerce', $BigDecimal_coerce$15 = function $$coerce(other) {
-      var self = this, $case = nil;
+    $def(self, '$coerce', function $$coerce(other) {
+      var self = this, $ret_or_1 = nil;
 
-      return (function() {$case = other;
-      if (self.$class()['$===']($case)) {return [other, self]}
-      else if ($$($nesting, 'Number')['$===']($case)) {return [self.$class().$new(other), self]}
-      else {return self.$raise($$($nesting, 'TypeError'), "" + (other.$class()) + " can't be coerced into " + (self.$class()))}})()
-    }, $BigDecimal_coerce$15.$$arity = 1);
+      if ($eqeqeq(self.$class(), ($ret_or_1 = other))) {
+        return [other, self]
+      } else if ($eqeqeq($$('Number'), $ret_or_1)) {
+        return [self.$class().$new(other), self]
+      } else {
+        return self.$raise($$('TypeError'), "" + (other.$class()) + " can't be coerced into " + (self.$class()))
+      }
+    }, 1);
     
-    Opal.def(self, '$div', $BigDecimal_div$16 = function $$div(other, digits) {
-      var $a, $b, self = this, _ = nil, $ret_or_10 = nil;
+    $def(self, '$div', function $$div(other, digits) {
+      var $a, $b, self = this, _ = nil;
 
       
       
-      if (digits == null) {
-        digits = nil;
+      if (digits == null) digits = nil;;
+      if ($eqeq(digits, 0)) {
+        return $rb_divide(self, other)
+      };
+      $b = self.$coerce(other), $a = $to_ary($b), (other = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $b;
+      if (($truthy(self['$nan?']()) || ($truthy(other['$nan?']())))) {
+        self.$raise($$('FloatDomainError'), "Computation results to 'NaN'(Not a Number)")
       };
-      if (digits['$=='](0)) {
-        return $rb_divide(self, other)};
-      $b = self.$coerce(other), $a = Opal.to_ary($b), (other = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $b;
-      if ($truthy((function() {if ($truthy(($ret_or_10 = self['$nan?']()))) {
-        return $ret_or_10
-      } else {
-        return other['$nan?']()
-      }; return nil; })())) {
-        self.$raise($$($nesting, 'FloatDomainError'), "Computation results to 'NaN'(Not a Number)")};
       if ($truthy(digits['$nil?']())) {
         
         if ($truthy(other['$zero?']())) {
-          self.$raise($$($nesting, 'ZeroDivisionError'), "divided by 0")};
+          self.$raise($$('ZeroDivisionError'), "divided by 0")
+        };
         if ($truthy(self['$infinite?']())) {
-          self.$raise($$($nesting, 'FloatDomainError'), "Computation results to 'Infinity'")};
-        return self.$class().$new(self.$bignumber().dividedToIntegerBy(other.$bignumber()));};
-      return self.$class().$new(self.$bignumber().dividedBy(other.$bignumber()).round(digits, self.$class().$mode($$($nesting, 'ROUND_MODE'))));
-    }, $BigDecimal_div$16.$$arity = -2);
+          self.$raise($$('FloatDomainError'), "Computation results to 'Infinity'")
+        };
+        return self.$class().$new(self.$bignumber().dividedToIntegerBy(other.$bignumber()));
+      };
+      return self.$class().$new(self.$bignumber().dividedBy(other.$bignumber()).round(digits, self.$class().$mode($$('ROUND_MODE'))));
+    }, -2);
     
-    Opal.def(self, '$finite?', $BigDecimal_finite$ques$17 = function() {
+    $def(self, '$finite?', function $BigDecimal_finite$ques$8() {
       var self = this;
 
       return self.$bignumber().isFinite()
-    }, $BigDecimal_finite$ques$17.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$infinite?', $BigDecimal_infinite$ques$18 = function() {
-      var self = this, $ret_or_11 = nil;
+    $def(self, '$infinite?', function $BigDecimal_infinite$ques$9() {
+      var self = this;
 
       
-      if ($truthy((function() {if ($truthy(($ret_or_11 = self['$finite?']()))) {
-        return $ret_or_11
-      } else {
-        return self['$nan?']()
-      }; return nil; })())) {
-        return nil};
+      if (($truthy(self['$finite?']()) || ($truthy(self['$nan?']())))) {
+        return nil
+      };
       if ($truthy(self.$bignumber().isNegative())) {
         return -1
       } else {
         return 1
       };
-    }, $BigDecimal_infinite$ques$18.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$minus', $BigDecimal_minus$19 = function $$minus(other) {
+    $def(self, '$minus', function $$minus(other) {
       var $a, $b, self = this, _ = nil;
 
       
-      $b = self.$coerce(other), $a = Opal.to_ary($b), (other = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $b;
+      $b = self.$coerce(other), $a = $to_ary($b), (other = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $b;
       return self.$class().$new(self.$bignumber().minus(other.$bignumber()));
-    }, $BigDecimal_minus$19.$$arity = 1);
-    $alias(self, "-", "minus");
+    }, 1);
     
-    Opal.def(self, '$mult', $BigDecimal_mult$20 = function $$mult(other, digits) {
+    $def(self, '$mult', function $$mult(other, digits) {
       var $a, $b, self = this, _ = nil;
 
       
       
-      if (digits == null) {
-        digits = nil;
-      };
-      $b = self.$coerce(other), $a = Opal.to_ary($b), (other = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $b;
+      if (digits == null) digits = nil;;
+      $b = self.$coerce(other), $a = $to_ary($b), (other = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $b;
       if ($truthy(digits['$nil?']())) {
-        return self.$class().$new(self.$bignumber().times(other.$bignumber()))};
-      return self.$class().$new(self.$bignumber().times(other.$bignumber()).round(digits, self.$class().$mode($$($nesting, 'ROUND_MODE'))));
-    }, $BigDecimal_mult$20.$$arity = -2);
-    $alias(self, "*", "mult");
+        return self.$class().$new(self.$bignumber().times(other.$bignumber()))
+      };
+      return self.$class().$new(self.$bignumber().times(other.$bignumber()).round(digits, self.$class().$mode($$('ROUND_MODE'))));
+    }, -2);
     
-    Opal.def(self, '$nan?', $BigDecimal_nan$ques$21 = function() {
+    $def(self, '$nan?', function $BigDecimal_nan$ques$10() {
       var self = this;
 
       return self.$bignumber().isNaN()
-    }, $BigDecimal_nan$ques$21.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$quo', $BigDecimal_quo$22 = function $$quo(other) {
+    $def(self, '$quo', function $$quo(other) {
       var $a, $b, self = this, _ = nil;
 
       
-      $b = self.$coerce(other), $a = Opal.to_ary($b), (other = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $b;
+      $b = self.$coerce(other), $a = $to_ary($b), (other = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $b;
       return self.$class().$new(self.$bignumber().dividedBy(other.$bignumber()));
-    }, $BigDecimal_quo$22.$$arity = 1);
-    $alias(self, "/", "quo");
+    }, 1);
     
-    Opal.def(self, '$sign', $BigDecimal_sign$23 = function $$sign() {
+    $def(self, '$sign', function $$sign() {
       var self = this;
 
       
       if ($truthy(self.$bignumber().isNaN())) {
-        return $$($nesting, 'SIGN_NaN')};
+        return $$('SIGN_NaN')
+      };
       if ($truthy(self.$bignumber().isZero())) {
-        return (function() {if ($truthy(self.$bignumber().isNegative())) {
-          return $$($nesting, 'SIGN_NEGATIVE_ZERO')
-        } else {
-          return $$($nesting, 'SIGN_POSITIVE_ZERO')
-        }; return nil; })()
+        return ($truthy(self.$bignumber().isNegative()) ? ($$('SIGN_NEGATIVE_ZERO')) : ($$('SIGN_POSITIVE_ZERO')))
       } else {
         return nil
       };
-    }, $BigDecimal_sign$23.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$sub', $BigDecimal_sub$24 = function $$sub(other, precision) {
+    $def(self, '$sub', function $$sub(other, precision) {
       var $a, $b, self = this, _ = nil;
 
       
-      $b = self.$coerce(other), $a = Opal.to_ary($b), (other = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $b;
+      $b = self.$coerce(other), $a = $to_ary($b), (other = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $b;
       return self.$class().$new(self.$bignumber().minus(other.$bignumber()));
-    }, $BigDecimal_sub$24.$$arity = 2);
+    }, 2);
     
-    Opal.def(self, '$to_f', $BigDecimal_to_f$25 = function $$to_f() {
+    $def(self, '$to_f', function $$to_f() {
       var self = this;
 
       return self.$bignumber().toNumber()
-    }, $BigDecimal_to_f$25.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_s', $BigDecimal_to_s$26 = function $$to_s(s) {
+    $def(self, '$to_s', function $$to_s(s) {
       var self = this;
 
       
       
-      if (s == null) {
-        s = "";
-      };
+      if (s == null) s = "";;
       return self.$bignumber().toString();
-    }, $BigDecimal_to_s$26.$$arity = -1);
-    $alias(self, "inspect", "to_s");
-    return (Opal.def(self, '$zero?', $BigDecimal_zero$ques$27 = function() {
+    }, -1);
+    
+    $def(self, '$zero?', function $BigDecimal_zero$ques$11() {
       var self = this;
 
       return self.$bignumber().isZero()
-    }, $BigDecimal_zero$ques$27.$$arity = 0), nil) && 'zero?';
-  })($nesting[0], $$($nesting, 'Numeric'), $nesting);
+    }, 0);
+    $alias(self, "===", "==");
+    $alias(self, "+", "add");
+    $alias(self, "-", "minus");
+    $alias(self, "*", "mult");
+    $alias(self, "/", "quo");
+    return $alias(self, "inspect", "to_s");
+  })($nesting[0], $$('Numeric'), $nesting);
 };
diff --git a/opal/master/bigdecimal.min.js b/opal/master/bigdecimal.min.js
index 8ef99d9c..4514352f 100644
--- a/opal/master/bigdecimal.min.js
+++ b/opal/master/bigdecimal.min.js
@@ -1 +1 @@
-Opal.modules.js=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$module=(Opal.$$$,Opal.$$,Opal.module),$truthy=Opal.truthy,$alias=Opal.alias;return Opal.add_stubs(["$insert","$<<","$global","$extend"]),function(self,$JS_$$$10){var $JS_new$5,$JS_new$6,$JS_call$9,self=$module(self,"JS");[self].concat($JS_$$$10);return Opal.def(self,"$delete",$JS_$$$10=function(object,property){return delete object[property]},$JS_$$$10.$$arity=2),Opal.def(self,"$global",$JS_$$$10=function(){return Opal.global},$JS_$$$10.$$arity=0),Opal.def(self,"$in",$JS_$$$10=function(property,object){return property in object},$JS_$$$10.$$arity=2),Opal.def(self,"$instanceof",$JS_$$$10=function(value,func){return value instanceof func},$JS_$$$10.$$arity=2),$truthy("function"==typeof Function.prototype.bind)?Opal.def(self,"$new",$JS_new$5=function(func,$a){var args=$JS_new$5.$$p,block=args||nil;return args&&($JS_new$5.$$p=null),args&&($JS_new$5.$$p=null),(args=Opal.slice.call(arguments,1,arguments.length)).$insert(0,this),$truthy(block)&&args["$<<"](block),new(func.bind.apply(func,args))},$JS_new$5.$$arity=-2):Opal.def(self,"$new",$JS_new$6=function(func,$a){var args,f,$post_args=$JS_new$6.$$p,block=$post_args||nil;return $post_args&&($JS_new$6.$$p=null),$post_args&&($JS_new$6.$$p=null),$post_args=Opal.slice.call(arguments,1,arguments.length),args=$post_args,$truthy(block)&&args["$<<"](block),(f=function(){return func.apply(this,args)}).prototype=func.prototype,new f},$JS_new$6.$$arity=-2),Opal.def(self,"$typeof",$JS_$$$10=function(value){return typeof value},$JS_$$$10.$$arity=1),Opal.def(self,"$void",$JS_$$$10=function(expr){},$JS_$$$10.$$arity=1),Opal.def(self,"$call",$JS_call$9=function(func,$a){var args=$JS_call$9.$$p,block=args||nil,g=nil;return args&&($JS_call$9.$$p=null),args&&($JS_call$9.$$p=null),args=Opal.slice.call(arguments,1,arguments.length),g=this.$global(),$truthy(block)&&args["$<<"](block),g[func].apply(g,args)},$JS_call$9.$$arity=-2),$alias(self,"method_missing","call"),Opal.def(self,"$[]",$JS_$$$10=function(name){return Opal.global[name]},$JS_$$$10.$$arity=1),self.$extend(self)}($nesting[0],$nesting)},Opal.modules["bigdecimal/bignumber"]=function(Opal){Opal.top;var $nesting=[],$$=(Opal.nil,Opal.$$$,Opal.$$),$klass=Opal.klass;return function($base,$super,$parent_nesting){function define(f){Opal.const_set(self,"BigNumber",f())}var self=$klass($base,$super,"BigDecimal");[self].concat($parent_nesting);define.amd=!0,function(e){"use strict";function n(e){function E(e,n){var t,r,i,o,u,s,f=this;if(!(f instanceof E))return j&&L(26,"constructor call without new",e),new E(e,n);if(null!=n&&H(n,2,64,M,"base")){if(s=e+"",10==(n|=0))return U(f=new E(e instanceof E?e:s),P+f.e+1,k);if((o="number"==typeof e)&&0*e!=0||!new RegExp("^-?"+(t="["+N.slice(0,n)+"]+")+"(?:\\."+t+")?$",n<37?"i":"").test(s))return h(f,s,o,n);o?(f.s=1/e<0?(s=s.slice(1),-1):1,j&&15<s.replace(/^0\.0*|\./,"").length&&L(M,v,e),o=!1):f.s=45===s.charCodeAt(0)?(s=s.slice(1),-1):1,s=D(s,10,n,f.s)}else{if(e instanceof E)return f.s=e.s,f.e=e.e,f.c=(e=e.c)?e.slice():e,void(M=0);if((o="number"==typeof e)&&0*e==0){if(f.s=1/e<0?(e=-e,-1):1,e===~~e){for(r=0,i=e;10<=i;i/=10,r++);return f.e=r,f.c=[e],void(M=0)}s=e+""}else{if(!g.test(s=e+""))return h(f,s,o);f.s=45===s.charCodeAt(0)?(s=s.slice(1),-1):1}}for(-1<(r=s.indexOf("."))&&(s=s.replace(".","")),0<(i=s.search(/e/i))?(r<0&&(r=i),r+=+s.slice(i+1),s=s.substring(0,i)):r<0&&(r=s.length),i=0;48===s.charCodeAt(i);i++);for(u=s.length;48===s.charCodeAt(--u););if(s=s.slice(i,u+1))if(u=s.length,o&&j&&15<u&&L(M,v,f.s*e),z<(r=r-i-1))f.c=f.e=null;else if(r<G)f.c=[f.e=0];else{if(f.e=r,f.c=[],i=(r+1)%O,r<0&&(i+=O),i<u){for(i&&f.c.push(+s.slice(0,i)),u-=O;i<u;)f.c.push(+s.slice(i,i+=O));s=s.slice(i),i=O-s.length}else i-=u;for(;i--;s+="0");f.c.push(+s)}else f.c=[f.e=0];M=0}function D(e,n,t,i){var o,u,f,c,a,h,g,p=e.indexOf("."),d=P,m=k;for(t<37&&(e=e.toLowerCase()),0<=p&&(f=J,J=0,e=e.replace(".",""),a=(g=new E(t)).pow(e.length-p),J=f,g.c=s(l(r(a.c),a.e),10,n),g.e=g.c.length),u=f=(h=s(e,t,n)).length;0==h[--f];h.pop());if(!h[0])return"0";if(p<0?--u:(a.c=h,a.e=u,a.s=i,h=(a=C(a,g,d,m,n)).c,c=a.r,u=a.e),p=h[o=u+d+1],f=n/2,c=c||o<0||null!=h[o+1],c=m<4?(null!=p||c)&&(0==m||m==(a.s<0?3:2)):f<p||p==f&&(4==m||c||6==m&&1&h[o-1]||m==(a.s<0?8:7)),o<1||!h[0])e=c?l("1",-d):"0";else{if(h.length=o,c)for(--n;++h[--o]>n;)h[o]=0,o||(++u,h.unshift(1));for(f=h.length;!h[--f];);for(p=0,e="";p<=f;e+=N.charAt(h[p++]));e=l(e,u)}return e}function F(e,n,u,i){var o,s,c,a;if(u=null!=u&&H(u,0,8,i,w)?0|u:k,!e.c)return e.toString();if(o=e.c[0],s=e.e,null==n)a=r(e.c),a=(19==i||24==i&&s<=B?f:l)(a,s);else if(u=(e=U(new E(e),n,u)).e,c=(a=r(e.c)).length,19==i||24==i&&(n<=u||u<=B)){for(;c<n;a+="0",c++);a=f(a,u)}else if(n-=s,a=l(a,u),c<u+1){if(0<--n)for(a+=".";n--;a+="0");}else if(0<(n+=u-c))for(u+1==c&&(a+=".");n--;a+="0");return e.s<0&&o?"-"+a:a}function _(e,n){var t,r,i=0;for(u(e[0])&&(e=e[0]),t=new E(e[0]);++i<e.length;){if(!(r=new E(e[i])).s){t=r;break}n.call(t,r)&&(t=r)}return t}function x(e,n,t,r,i){return(e<n||t<e||e!=c(e))&&L(r,(i||"decimal places")+(e<n||t<e?" out of range":" not an integer"),e),!0}function I(e,n,t){for(var r=1,i=n.length;!n[--i];n.pop());for(i=n[0];10<=i;i/=10,r++);return(t=r+t*O-1)>z?e.c=e.e=null:t<G?e.c=[e.e=0]:(e.e=t,e.c=n),e}function L(e,n,r){r=new Error(["new 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Opal.const_set($nesting[0],"ROUND_MODE",256),Opal.const_set($nesting[0],"ROUND_UP",0),Opal.const_set($nesting[0],"ROUND_DOWN",1),Opal.const_set($nesting[0],"ROUND_CEILING",2),Opal.const_set($nesting[0],"ROUND_FLOOR",3),Opal.const_set($nesting[0],"ROUND_HALF_UP",4),Opal.const_set($nesting[0],"ROUND_HALF_DOWN",5),Opal.const_set($nesting[0],"ROUND_HALF_EVEN",6),Opal.const_set($nesting[0],"SIGN_NaN",0),Opal.const_set($nesting[0],"SIGN_POSITIVE_ZERO",1),Opal.const_set($nesting[0],"SIGN_NEGATIVE_ZERO",-1),Opal.const_set($nesting[0],"SIGN_POSITIVE_FINITE",2),Opal.const_set($nesting[0],"SIGN_NEGATIVE_FINITE",-2),Opal.const_set($nesting[0],"SIGN_POSITIVE_INFINITE",3),Opal.const_set($nesting[0],"SIGN_NEGATIVE_INFINITE",-3),Opal.defs($BigDecimal_zero$ques$27,"$limit",$BigDecimal_to_s$26=function(digits){return null==this.digits&&(this.digits=nil),null==digits&&(digits=nil),$truthy(digits)&&(this.digits=digits),this.digits},$BigDecimal_to_s$26.$$arity=-1),Opal.defs($BigDecimal_zero$ques$27,"$mode",$BigDecimal_to_s$26=function(mode,value){var self=this,$case=nil,$ret_or_1=nil;return null==self.round_mode&&(self.round_mode=nil),null==value&&(value=nil),$case=mode,$$($nesting,"ROUND_MODE")["$==="]($case)?($truthy(value)&&(self.round_mode=value),$truthy($ret_or_1=self.round_mode)?$ret_or_1:$$($nesting,"ROUND_HALF_UP")):nil},$BigDecimal_to_s$26.$$arity=-2),$BigDecimal_zero$ques$27.$attr_reader("bignumber"),Opal.def($BigDecimal_zero$ques$27,"$initialize",$BigDecimal_to_s$26=function(initial,digits){return null==digits&&(digits=0),this.bignumber=$$($nesting,"JS").$new($$($nesting,"BigNumber"),initial)},$BigDecimal_to_s$26.$$arity=-2),Opal.def($BigDecimal_zero$ques$27,"$==",$BigDecimal_to_s$26=function(other){var self=this,$case=nil;return $case=other,self.$class()["$==="]($case)?self.$bignumber().equals(other.$bignumber()):!!$$($nesting,"Number")["$==="]($case)&&self.$bignumber().equals(other)},$BigDecimal_to_s$26.$$arity=1),$alias($BigDecimal_zero$ques$27,"===","=="),Opal.def($BigDecimal_zero$ques$27,"$<=>",$BigDecimal_to_s$26=function(other){var self=this,result=nil,$case=nil;return $case=other,null===(result=self.$class()["$==="]($case)?self.$bignumber().comparedTo(other.$bignumber()):$$($nesting,"Number")["$==="]($case)?self.$bignumber().comparedTo(other):nil)?nil:result},$BigDecimal_to_s$26.$$arity=1),Opal.def($BigDecimal_zero$ques$27,"$<",$BigDecimal_$lt$8=function(other){var $zuper_ii,$iter=$BigDecimal_$lt$8.$$p,self=this,$ret_or_2=nil,$ret_or_3=nil,$zuper=nil,$zuper_i=nil;for($iter&&($BigDecimal_$lt$8.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return!$truthy($truthy($ret_or_2=self["$nan?"]())?$ret_or_2:$truthy($ret_or_3=other)?other["$nan?"]():$ret_or_3)&&$send2(self,$find_super(self,"<",$BigDecimal_$lt$8,!1,!0),"<",$zuper,$iter)},$BigDecimal_$lt$8.$$arity=1),Opal.def($BigDecimal_zero$ques$27,"$<=",$BigDecimal_$lt_eq$9=function(other){var $zuper_ii,$iter=$BigDecimal_$lt_eq$9.$$p,self=this,$ret_or_4=nil,$ret_or_5=nil,$zuper=nil,$zuper_i=nil;for($iter&&($BigDecimal_$lt_eq$9.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return!$truthy($truthy($ret_or_4=self["$nan?"]())?$ret_or_4:$truthy($ret_or_5=other)?other["$nan?"]():$ret_or_5)&&$send2(self,$find_super(self,"<=",$BigDecimal_$lt_eq$9,!1,!0),"<=",$zuper,$iter)},$BigDecimal_$lt_eq$9.$$arity=1),Opal.def($BigDecimal_zero$ques$27,"$>",$BigDecimal_$gt$10=function(other){var $zuper_ii,$iter=$BigDecimal_$gt$10.$$p,self=this,$ret_or_6=nil,$ret_or_7=nil,$zuper=nil,$zuper_i=nil;for($iter&&($BigDecimal_$gt$10.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return!$truthy($truthy($ret_or_6=self["$nan?"]())?$ret_or_6:$truthy($ret_or_7=other)?other["$nan?"]():$ret_or_7)&&$send2(self,$find_super(self,">",$BigDecimal_$gt$10,!1,!0),">",$zuper,$iter)},$BigDecimal_$gt$10.$$arity=1),Opal.def($BigDecimal_zero$ques$27,"$>=",$BigDecimal_$gt_eq$11=function(other){var $zuper_ii,$iter=$BigDecimal_$gt_eq$11.$$p,self=this,$ret_or_8=nil,$ret_or_9=nil,$zuper=nil,$zuper_i=nil;for($iter&&($BigDecimal_$gt_eq$11.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new 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rhs?rhs<=lhs:lhs["$>="](rhs)))?this.$class().$new(this.$bignumber().round(n,$$($nesting,"ROUND_CEILING"))):this.$class().$new(this.$bignumber().round(0,$$($nesting,"ROUND_CEILING")))},$BigDecimal_to_s$26.$$arity=-1),Opal.def($BigDecimal_zero$ques$27,"$coerce",$BigDecimal_to_s$26=function(other){var self=this,$case=nil;return $case=other,self.$class()["$==="]($case)?[other,self]:$$($nesting,"Number")["$==="]($case)?[self.$class().$new(other),self]:self.$raise($$($nesting,"TypeError"),other.$class()+" can't be coerced into "+self.$class())},$BigDecimal_to_s$26.$$arity=1),Opal.def($BigDecimal_zero$ques$27,"$div",$BigDecimal_to_s$26=function(other,digits){var lhs,$a,self=this,$ret_or_10=nil;return null==digits&&(digits=nil),digits["$=="](0)?($a=other,"number"==typeof(lhs=self)&&"number"==typeof $a?lhs/$a:lhs["$/"]($a)):($a=self.$coerce(other),$a=Opal.to_ary($a),other=null==$a[0]?nil:$a[0],null==$a[1]||$a[1],$truthy($truthy($ret_or_10=self["$nan?"]())?$ret_or_10:other["$nan?"]())&&self.$raise($$($nesting,"FloatDomainError"),"Computation results to 'NaN'(Not a Number)"),$truthy(digits["$nil?"]())?($truthy(other["$zero?"]())&&self.$raise($$($nesting,"ZeroDivisionError"),"divided by 0"),$truthy(self["$infinite?"]())&&self.$raise($$($nesting,"FloatDomainError"),"Computation results to 'Infinity'"),self.$class().$new(self.$bignumber().dividedToIntegerBy(other.$bignumber()))):self.$class().$new(self.$bignumber().dividedBy(other.$bignumber()).round(digits,self.$class().$mode($$($nesting,"ROUND_MODE")))))},$BigDecimal_to_s$26.$$arity=-2),Opal.def($BigDecimal_zero$ques$27,"$finite?",$BigDecimal_to_s$26=function(){return this.$bignumber().isFinite()},$BigDecimal_to_s$26.$$arity=0),Opal.def($BigDecimal_zero$ques$27,"$infinite?",$BigDecimal_to_s$26=function(){var self=this,$ret_or_11=nil;return $truthy($truthy($ret_or_11=self["$finite?"]())?$ret_or_11:self["$nan?"]())?nil:$truthy(self.$bignumber().isNegative())?-1:1},$BigDecimal_to_s$26.$$arity=0),Opal.def($BigDecimal_zero$ques$27,"$minus",$BigDecimal_to_s$26=function(other){var $a=this.$coerce(other),$a=Opal.to_ary($a);return other=null==$a[0]?nil:$a[0],null==$a[1]||$a[1],this.$class().$new(this.$bignumber().minus(other.$bignumber()))},$BigDecimal_to_s$26.$$arity=1),$alias($BigDecimal_zero$ques$27,"-","minus"),Opal.def($BigDecimal_zero$ques$27,"$mult",$BigDecimal_to_s$26=function(other,digits){var $a;return null==digits&&(digits=nil),$a=this.$coerce(other),other=null==($a=Opal.to_ary($a))[0]?nil:$a[0],null==$a[1]||$a[1],$truthy(digits["$nil?"]())?this.$class().$new(this.$bignumber().times(other.$bignumber())):this.$class().$new(this.$bignumber().times(other.$bignumber()).round(digits,this.$class().$mode($$($nesting,"ROUND_MODE"))))},$BigDecimal_to_s$26.$$arity=-2),$alias($BigDecimal_zero$ques$27,"*","mult"),Opal.def($BigDecimal_zero$ques$27,"$nan?",$BigDecimal_to_s$26=function(){return this.$bignumber().isNaN()},$BigDecimal_to_s$26.$$arity=0),Opal.def($BigDecimal_zero$ques$27,"$quo",$BigDecimal_to_s$26=function(other){var $a=this.$coerce(other),$a=Opal.to_ary($a);return other=null==$a[0]?nil:$a[0],null==$a[1]||$a[1],this.$class().$new(this.$bignumber().dividedBy(other.$bignumber()))},$BigDecimal_to_s$26.$$arity=1),$alias($BigDecimal_zero$ques$27,"/","quo"),Opal.def($BigDecimal_zero$ques$27,"$sign",$BigDecimal_to_s$26=function(){var self=this;return $truthy(self.$bignumber().isNaN())?$$($nesting,"SIGN_NaN"):$truthy(self.$bignumber().isZero())?$truthy(self.$bignumber().isNegative())?$$($nesting,"SIGN_NEGATIVE_ZERO"):$$($nesting,"SIGN_POSITIVE_ZERO"):nil},$BigDecimal_to_s$26.$$arity=0),Opal.def($BigDecimal_zero$ques$27,"$sub",$BigDecimal_to_s$26=function(other){var $a=this.$coerce(other),$a=Opal.to_ary($a);return other=null==$a[0]?nil:$a[0],null==$a[1]||$a[1],this.$class().$new(this.$bignumber().minus(other.$bignumber()))},$BigDecimal_to_s$26.$$arity=2),Opal.def($BigDecimal_zero$ques$27,"$to_f",$BigDecimal_to_s$26=function(){return this.$bignumber().toNumber()},$BigDecimal_to_s$26.$$arity=0),Opal.def($BigDecimal_zero$ques$27,"$to_s",$BigDecimal_to_s$26=function(s){return null==s&&(s=""),this.$bignumber().toString()},$BigDecimal_to_s$26.$$arity=-1),$alias($BigDecimal_zero$ques$27,"inspect","to_s"),Opal.def($BigDecimal_zero$ques$27,"$zero?",$BigDecimal_zero$ques$27=function(){return this.$bignumber().isZero()},$BigDecimal_zero$ques$27.$$arity=0),nil&&"zero?"}($nesting[0],$$($nesting,"Numeric"),$nesting)};
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diff --git a/opal/master/bigdecimal.min.js.gz b/opal/master/bigdecimal.min.js.gz
index 2d0aa7a8..8ecf64b4 100644
Binary files a/opal/master/bigdecimal.min.js.gz and b/opal/master/bigdecimal.min.js.gz differ
diff --git a/opal/master/buffer.js b/opal/master/buffer.js
index 2c8efd49..ace97535 100644
--- a/opal/master/buffer.js
+++ b/opal/master/buffer.js
@@ -1,22 +1,15 @@
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-  }
-  function $rb_ge(lhs, rhs) {
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-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $truthy = Opal.truthy, $send = Opal.send, $hash2 = Opal.hash2, $range = Opal.range, $alias = Opal.alias, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $gvars = Opal.gvars;
-
-  Opal.add_stubs(['$try_convert', '$native?', '$respond_to?', '$to_n', '$raise', '$inspect', '$Native', '$proc', '$map!', '$end_with?', '$define_method', '$[]', '$convert', '$call', '$to_proc', '$new', '$each', '$native_reader', '$native_writer', '$extend', '$warn', '$include', '$is_a?', '$map', '$to_a', '$_Array', '$method_missing', '$bind', '$instance_method', '$slice', '$-', '$length', '$[]=', '$enum_for', '$===', '$>=', '$<<', '$each_pair', '$_initialize', '$name', '$native_module']);
+Opal.modules["native"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $defs = Opal.defs, $truthy = Opal.truthy, $send = Opal.send, $Kernel = Opal.Kernel, $hash2 = Opal.hash2, $range = Opal.range, $to_a = Opal.to_a, $def = Opal.def, $alias = Opal.alias, $klass = Opal.klass, $rb_minus = Opal.rb_minus, $send2 = Opal.send2, $find_super = Opal.find_super, $eqeqeq = Opal.eqeqeq, $rb_ge = Opal.rb_ge, $gvars = Opal.gvars;
+
+  Opal.add_stubs('try_convert,native?,respond_to?,to_n,raise,inspect,Native,proc,map!,end_with?,define_method,[],convert,call,to_proc,new,each,native_reader,native_writer,extend,warn,include,is_a?,map,to_a,_Array,method_missing,bind,instance_method,slice,-,length,[]=,enum_for,===,>=,<<,each_pair,method_defined?,_initialize,name,native_module');
   
   (function($base, $parent_nesting) {
     var self = $module($base, 'Native');
 
-    var $nesting = [self].concat($parent_nesting), $Native_is_a$ques$1, $Native_try_convert$2, $Native_convert$3, $Native_call$4, $Native_proc$5, $Native_included$22;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
-    Opal.defs(self, '$is_a?', $Native_is_a$ques$1 = function(object, klass) {
+    $defs(self, '$is_a?', function $Native_is_a$ques$1(object, klass) {
       var self = this;
 
       
@@ -27,15 +20,13 @@ Opal.modules["native"] = function(Opal) {
         return false;
       }
     
-    }, $Native_is_a$ques$1.$$arity = 2);
-    Opal.defs(self, '$try_convert', $Native_try_convert$2 = function $$try_convert(value, default$) {
+    }, 2);
+    $defs(self, '$try_convert', function $$try_convert(value, default$) {
       var self = this;
 
       
       
-      if (default$ == null) {
-        default$ = nil;
-      };
+      if (default$ == null) default$ = nil;;
       
       if (self['$native?'](value)) {
         return value;
@@ -47,8 +38,8 @@ Opal.modules["native"] = function(Opal) {
         return default$;
       }
     ;
-    }, $Native_try_convert$2.$$arity = -2);
-    Opal.defs(self, '$convert', $Native_convert$3 = function $$convert(value) {
+    }, -2);
+    $defs(self, '$convert', function $$convert(value) {
       var self = this;
 
       
@@ -59,19 +50,18 @@ Opal.modules["native"] = function(Opal) {
         return value.$to_n();
       }
       else {
-        self.$raise($$($nesting, 'ArgumentError'), "" + (value.$inspect()) + " isn't native");
+        self.$raise($$('ArgumentError'), "" + (value.$inspect()) + " isn't native");
       }
     
-    }, $Native_convert$3.$$arity = 1);
-    Opal.defs(self, '$call', $Native_call$4 = function $$call(obj, key, $a) {
-      var $iter = $Native_call$4.$$p, block = $iter || nil, $post_args, args, self = this;
+    }, 1);
+    $defs(self, '$call', function $$call(obj, key, $a) {
+      var block = $$call.$$p || nil, $post_args, args, self = this;
 
-      if ($iter) $Native_call$4.$$p = null;
-      
+      delete $$call.$$p;
       
-      if ($iter) $Native_call$4.$$p = null;;
+      ;
       
-      $post_args = Opal.slice.call(arguments, 2, arguments.length);
+      $post_args = Opal.slice.call(arguments, 2);
       
       args = $post_args;;
       
@@ -97,33 +87,29 @@ Opal.modules["native"] = function(Opal) {
         return self.$Native(prop);
       }
     ;
-    }, $Native_call$4.$$arity = -3);
-    Opal.defs(self, '$proc', $Native_proc$5 = function $$proc() {
-      var $iter = $Native_proc$5.$$p, block = $iter || nil, $$6, self = this;
+    }, -3);
+    $defs(self, '$proc', function $$proc() {
+      var block = $$proc.$$p || nil, self = this;
 
-      if ($iter) $Native_proc$5.$$p = null;
-      
+      delete $$proc.$$p;
       
-      if ($iter) $Native_proc$5.$$p = null;;
-      if ($truthy(block)) {
-      } else {
-        self.$raise($$($nesting, 'LocalJumpError'), "no block given")
+      ;
+      if (!$truthy(block)) {
+        self.$raise($$('LocalJumpError'), "no block given")
       };
-      return $send($$$('::', 'Kernel'), 'proc', [], ($$6 = function($a){var self = $$6.$$s == null ? this : $$6.$$s, $post_args, args, $$7, instance = nil;
+      return $send($Kernel, 'proc', [], function $$2($a){var $post_args, args, self = $$2.$$s == null ? this : $$2.$$s, instance = nil;
 
         
         
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
+        $post_args = Opal.slice.call(arguments);
         
         args = $post_args;;
-        $send(args, 'map!', [], ($$7 = function(arg){var self = $$7.$$s == null ? this : $$7.$$s;
+        $send(args, 'map!', [], function $$3(arg){var self = $$3.$$s == null ? this : $$3.$$s;
 
           
           
-          if (arg == null) {
-            arg = nil;
-          };
-          return self.$Native(arg);}, $$7.$$s = self, $$7.$$arity = 1, $$7));
+          if (arg == null) arg = nil;;
+          return self.$Native(arg);}, {$$arity: 1, $$s: self});
         instance = self.$Native(this);
         
         // if global is current scope, run the block in the scope it was defined
@@ -140,22 +126,22 @@ Opal.modules["native"] = function(Opal) {
         finally {
           block.$$s = self_;
         }
-      ;}, $$6.$$s = self, $$6.$$arity = -1, $$6));
-    }, $Native_proc$5.$$arity = 0);
+      ;}, {$$arity: -1, $$s: self});
+    }, 0);
     (function($base, $parent_nesting) {
       var self = $module($base, 'Helpers');
 
-      var $nesting = [self].concat($parent_nesting), $Helpers_alias_native$8, $Helpers_native_reader$12, $Helpers_native_writer$15, $Helpers_native_accessor$18;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
       
-      Opal.def(self, '$alias_native', $Helpers_alias_native$8 = function $$alias_native(new$, $a, $b) {
-        var $post_args, $kwargs, old, as, $$9, $$10, $$11, $iter = $Helpers_alias_native$8.$$p, $yield = $iter || nil, self = this;
+      $def(self, '$alias_native', function $$alias_native(new$, $a, $b) {
+        var $post_args, $kwargs, old, as, $yield = $$alias_native.$$p || nil, self = this;
 
-        if ($iter) $Helpers_alias_native$8.$$p = null;
+        delete $$alias_native.$$p;
         
         
-        $post_args = Opal.slice.call(arguments, 1, arguments.length);
+        $post_args = Opal.slice.call(arguments, 1);
         
         $kwargs = Opal.extract_kwargs($post_args);
         
@@ -165,250 +151,227 @@ Opal.modules["native"] = function(Opal) {
           throw Opal.ArgumentError.$new('expected kwargs');
         };
         
-        if ($post_args.length > 0) {
-          old = $post_args[0];
-          $post_args.splice(0, 1);
-        }
-        if (old == null) {
-          old = new$;
-        };
+        if ($post_args.length > 0) old = $post_args.shift();
+        if (old == null) old = new$;;
         
         as = $kwargs.$$smap["as"];
-        if (as == null) {
-          as = nil
-        };
+        if (as == null) as = nil;
         if ($truthy(old['$end_with?']("="))) {
-          return $send(self, 'define_method', [new$], ($$9 = function(value){var self = $$9.$$s == null ? this : $$9.$$s;
+          return $send(self, 'define_method', [new$], function $$4(value){var self = $$4.$$s == null ? this : $$4.$$s;
             if (self["native"] == null) self["native"] = nil;
 
             
             
-            if (value == null) {
-              value = nil;
-            };
-            self["native"][old['$[]']($range(0, -2, false))] = $$($nesting, 'Native').$convert(value);
-            return value;}, $$9.$$s = self, $$9.$$arity = 1, $$9))
+            if (value == null) value = nil;;
+            self["native"][old['$[]']($range(0, -2, false))] = $$('Native').$convert(value);
+            return value;}, {$$arity: 1, $$s: self})
         } else if ($truthy(as)) {
-          return $send(self, 'define_method', [new$], ($$10 = function($c){var self = $$10.$$s == null ? this : $$10.$$s, $iter = $$10.$$p, block = $iter || nil, $post_args, args, value = nil;
+          return $send(self, 'define_method', [new$], function $$5($c){var block = $$5.$$p || nil, $post_args, args, self = $$5.$$s == null ? this : $$5.$$s, value = nil;
             if (self["native"] == null) self["native"] = nil;
 
+            delete $$5.$$p;
             
+            ;
             
-            if ($iter) $$10.$$p = null;;
-            
-            $post_args = Opal.slice.call(arguments, 0, arguments.length);
+            $post_args = Opal.slice.call(arguments);
             
             args = $post_args;;
-            value = $send($$($nesting, 'Native'), 'call', [self["native"], old].concat(Opal.to_a(args)), block.$to_proc());
+            value = $send($$('Native'), 'call', [self["native"], old].concat($to_a(args)), block.$to_proc());
             if ($truthy(value)) {
               return as.$new(value.$to_n())
             } else {
               return nil
-            };}, $$10.$$s = self, $$10.$$arity = -1, $$10))
+            };}, {$$arity: -1, $$s: self})
         } else {
-          return $send(self, 'define_method', [new$], ($$11 = function($c){var self = $$11.$$s == null ? this : $$11.$$s, $iter = $$11.$$p, block = $iter || nil, $post_args, args;
+          return $send(self, 'define_method', [new$], function $$6($c){var block = $$6.$$p || nil, $post_args, args, self = $$6.$$s == null ? this : $$6.$$s;
             if (self["native"] == null) self["native"] = nil;
 
+            delete $$6.$$p;
             
+            ;
             
-            if ($iter) $$11.$$p = null;;
-            
-            $post_args = Opal.slice.call(arguments, 0, arguments.length);
+            $post_args = Opal.slice.call(arguments);
             
             args = $post_args;;
-            return $send($$($nesting, 'Native'), 'call', [self["native"], old].concat(Opal.to_a(args)), block.$to_proc());}, $$11.$$s = self, $$11.$$arity = -1, $$11))
+            return $send($$('Native'), 'call', [self["native"], old].concat($to_a(args)), block.$to_proc());}, {$$arity: -1, $$s: self})
         };
-      }, $Helpers_alias_native$8.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$native_reader', $Helpers_native_reader$12 = function $$native_reader($a) {
-        var $post_args, names, $$13, self = this;
+      $def(self, '$native_reader', function $$native_reader($a) {
+        var $post_args, names, self = this;
 
         
         
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
+        $post_args = Opal.slice.call(arguments);
         
         names = $post_args;;
-        return $send(names, 'each', [], ($$13 = function(name){var self = $$13.$$s == null ? this : $$13.$$s, $$14;
+        return $send(names, 'each', [], function $$7(name){var self = $$7.$$s == null ? this : $$7.$$s;
 
           
           
-          if (name == null) {
-            name = nil;
-          };
-          return $send(self, 'define_method', [name], ($$14 = function(){var self = $$14.$$s == null ? this : $$14.$$s;
+          if (name == null) name = nil;;
+          return $send(self, 'define_method', [name], function $$8(){var self = $$8.$$s == null ? this : $$8.$$s;
             if (self["native"] == null) self["native"] = nil;
 
-            return self.$Native(self["native"][name])}, $$14.$$s = self, $$14.$$arity = 0, $$14));}, $$13.$$s = self, $$13.$$arity = 1, $$13));
-      }, $Helpers_native_reader$12.$$arity = -1);
+            return self.$Native(self["native"][name])}, {$$arity: 0, $$s: self});}, {$$arity: 1, $$s: self});
+      }, -1);
       
-      Opal.def(self, '$native_writer', $Helpers_native_writer$15 = function $$native_writer($a) {
-        var $post_args, names, $$16, self = this;
+      $def(self, '$native_writer', function $$native_writer($a) {
+        var $post_args, names, self = this;
 
         
         
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
+        $post_args = Opal.slice.call(arguments);
         
         names = $post_args;;
-        return $send(names, 'each', [], ($$16 = function(name){var self = $$16.$$s == null ? this : $$16.$$s, $$17;
+        return $send(names, 'each', [], function $$9(name){var self = $$9.$$s == null ? this : $$9.$$s;
 
           
           
-          if (name == null) {
-            name = nil;
-          };
-          return $send(self, 'define_method', ["" + (name) + "="], ($$17 = function(value){var self = $$17.$$s == null ? this : $$17.$$s;
+          if (name == null) name = nil;;
+          return $send(self, 'define_method', ["" + (name) + "="], function $$10(value){var self = $$10.$$s == null ? this : $$10.$$s;
             if (self["native"] == null) self["native"] = nil;
 
             
             
-            if (value == null) {
-              value = nil;
-            };
-            return self.$Native(self["native"][name] = value);}, $$17.$$s = self, $$17.$$arity = 1, $$17));}, $$16.$$s = self, $$16.$$arity = 1, $$16));
-      }, $Helpers_native_writer$15.$$arity = -1);
-      return (Opal.def(self, '$native_accessor', $Helpers_native_accessor$18 = function $$native_accessor($a) {
+            if (value == null) value = nil;;
+            return self.$Native(self["native"][name] = value);}, {$$arity: 1, $$s: self});}, {$$arity: 1, $$s: self});
+      }, -1);
+      return $def(self, '$native_accessor', function $$native_accessor($a) {
         var $post_args, names, self = this;
 
         
         
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
+        $post_args = Opal.slice.call(arguments);
         
         names = $post_args;;
-        $send(self, 'native_reader', Opal.to_a(names));
-        return $send(self, 'native_writer', Opal.to_a(names));
-      }, $Helpers_native_accessor$18.$$arity = -1), nil) && 'native_accessor';
+        $send(self, 'native_reader', $to_a(names));
+        return $send(self, 'native_writer', $to_a(names));
+      }, -1);
     })($nesting[0], $nesting);
     (function($base, $parent_nesting) {
       var self = $module($base, 'Wrapper');
 
-      var $nesting = [self].concat($parent_nesting), $Wrapper_initialize$19, $Wrapper_to_n$20, $Wrapper_included$21;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
       
-      Opal.def(self, '$initialize', $Wrapper_initialize$19 = function $$initialize(native$) {
+      $def(self, '$initialize', function $$initialize(native$) {
         var self = this;
 
         
-        if ($truthy($$$('::', 'Kernel')['$native?'](native$))) {
-        } else {
-          $$$('::', 'Kernel').$raise($$($nesting, 'ArgumentError'), "" + (native$.$inspect()) + " isn't native")
+        if (!$truthy($Kernel['$native?'](native$))) {
+          $Kernel.$raise($$('ArgumentError'), "" + (native$.$inspect()) + " isn't native")
         };
         return (self["native"] = native$);
-      }, $Wrapper_initialize$19.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$to_n', $Wrapper_to_n$20 = function $$to_n() {
+      $def(self, '$to_n', function $$to_n() {
         var self = this;
         if (self["native"] == null) self["native"] = nil;
 
         return self["native"]
-      }, $Wrapper_to_n$20.$$arity = 0);
-      return (Opal.defs(self, '$included', $Wrapper_included$21 = function $$included(klass) {
-        var self = this;
-
-        return klass.$extend($$($nesting, 'Helpers'))
-      }, $Wrapper_included$21.$$arity = 1), nil) && 'included';
+      }, 0);
+      return $defs(self, '$included', function $$included(klass) {
+        
+        return klass.$extend($$('Helpers'))
+      }, 1);
     })($nesting[0], $nesting);
-    return (Opal.defs(self, '$included', $Native_included$22 = function $$included(base) {
+    return $defs(self, '$included', function $$included(base) {
       var self = this;
 
       
       self.$warn("Including ::Native is deprecated. Please include Native::Wrapper instead.");
-      return base.$include($$($nesting, 'Wrapper'));
-    }, $Native_included$22.$$arity = 1), nil) && 'included';
+      return base.$include($$('Wrapper'));
+    }, 1);
   })($nesting[0], $nesting);
   (function($base, $parent_nesting) {
     var self = $module($base, 'Kernel');
 
-    var $nesting = [self].concat($parent_nesting), $Kernel_native$ques$23, $Kernel_Native$24, $Kernel_Array$27;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
     
-    Opal.def(self, '$native?', $Kernel_native$ques$23 = function(value) {
-      var self = this;
-
+    $def(self, '$native?', function $Kernel_native$ques$11(value) {
+      
       return value == null || !value.$$class;
-    }, $Kernel_native$ques$23.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$Native', $Kernel_Native$24 = function $$Native(obj) {
-      var $$25, $$26, $iter = $Kernel_Native$24.$$p, $yield = $iter || nil, self = this;
+    $def(self, '$Native', function $$Native(obj) {
+      var $yield = $$Native.$$p || nil, self = this;
 
-      if ($iter) $Kernel_Native$24.$$p = null;
+      delete $$Native.$$p;
       if ($truthy(obj == null)) {
         return nil
       } else if ($truthy(self['$native?'](obj))) {
-        return $$$($$($nesting, 'Native'), 'Object').$new(obj)
-      } else if ($truthy(obj['$is_a?']($$($nesting, 'Array')))) {
-        return $send(obj, 'map', [], ($$25 = function(o){var self = $$25.$$s == null ? this : $$25.$$s;
+        return $$$($$('Native'), 'Object').$new(obj)
+      } else if ($truthy(obj['$is_a?']($$('Array')))) {
+        return $send(obj, 'map', [], function $$12(o){var self = $$12.$$s == null ? this : $$12.$$s;
 
           
           
-          if (o == null) {
-            o = nil;
-          };
-          return self.$Native(o);}, $$25.$$s = self, $$25.$$arity = 1, $$25))
-      } else if ($truthy(obj['$is_a?']($$($nesting, 'Proc')))) {
-        return $send(self, 'proc', [], ($$26 = function($a){var self = $$26.$$s == null ? this : $$26.$$s, $iter = $$26.$$p, block = $iter || nil, $post_args, args;
+          if (o == null) o = nil;;
+          return self.$Native(o);}, {$$arity: 1, $$s: self})
+      } else if ($truthy(obj['$is_a?']($$('Proc')))) {
+        return $send(self, 'proc', [], function $$13($a){var block = $$13.$$p || nil, $post_args, args, self = $$13.$$s == null ? this : $$13.$$s;
 
+          delete $$13.$$p;
           
+          ;
           
-          if ($iter) $$26.$$p = null;;
-          
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
           args = $post_args;;
-          return self.$Native($send(obj, 'call', Opal.to_a(args), block.$to_proc()));}, $$26.$$s = self, $$26.$$arity = -1, $$26))
+          return self.$Native($send(obj, 'call', $to_a(args), block.$to_proc()));}, {$$arity: -1, $$s: self})
       } else {
         return obj
       }
-    }, $Kernel_Native$24.$$arity = 1);
+    }, 1);
     $alias(self, "_Array", "Array");
-    return (Opal.def(self, '$Array', $Kernel_Array$27 = function $$Array(object, $a) {
-      var $iter = $Kernel_Array$27.$$p, block = $iter || nil, $post_args, args, self = this;
+    return $def(self, '$Array', function $$Array(object, $a) {
+      var block = $$Array.$$p || nil, $post_args, args, self = this;
 
-      if ($iter) $Kernel_Array$27.$$p = null;
+      delete $$Array.$$p;
       
+      ;
       
-      if ($iter) $Kernel_Array$27.$$p = null;;
-      
-      $post_args = Opal.slice.call(arguments, 1, arguments.length);
+      $post_args = Opal.slice.call(arguments, 1);
       
       args = $post_args;;
       if ($truthy(self['$native?'](object))) {
-        return $send($$$($$($nesting, 'Native'), 'Array'), 'new', [object].concat(Opal.to_a(args)), block.$to_proc()).$to_a()};
+        return $send($$$($$('Native'), 'Array'), 'new', [object].concat($to_a(args)), block.$to_proc()).$to_a()
+      };
       return self.$_Array(object);
-    }, $Kernel_Array$27.$$arity = -2), nil) && 'Array';
+    }, -2);
   })($nesting[0], $nesting);
-  (function($base, $super, $parent_nesting) {
+  (function($base, $super) {
     var self = $klass($base, $super, 'Object');
 
-    var $nesting = [self].concat($parent_nesting), $Object_$eq_eq$28, $Object_has_key$ques$29, $Object_each$30, $Object_$$$31, $Object_$$$eq$32, $Object_merge$excl$33, $Object_respond_to$ques$34, $Object_respond_to_missing$ques$35, $Object_method_missing$36, $Object_nil$ques$37, $Object_is_a$ques$38, $Object_instance_of$ques$39, $Object_class$40, $Object_to_a$41, $Object_inspect$42;
+    var $proto = self.$$prototype;
 
-    self.$$prototype["native"] = nil;
+    $proto["native"] = nil;
     
-    self.$include($$$($$$('::', 'Native'), 'Wrapper'));
+    self.$include($$$($$$('Native'), 'Wrapper'));
     
-    Opal.def(self, '$==', $Object_$eq_eq$28 = function(other) {
+    $def(self, '$==', function $Object_$eq_eq$14(other) {
       var self = this;
 
-      return self["native"] === $$$('::', 'Native').$try_convert(other)
-    }, $Object_$eq_eq$28.$$arity = 1);
+      return self["native"] === $$$('Native').$try_convert(other)
+    }, 1);
     
-    Opal.def(self, '$has_key?', $Object_has_key$ques$29 = function(name) {
+    $def(self, '$has_key?', function $Object_has_key$ques$15(name) {
       var self = this;
 
       return Opal.hasOwnProperty.call(self["native"], name)
-    }, $Object_has_key$ques$29.$$arity = 1);
-    $alias(self, "key?", "has_key?");
-    $alias(self, "include?", "has_key?");
-    $alias(self, "member?", "has_key?");
+    }, 1);
     
-    Opal.def(self, '$each', $Object_each$30 = function $$each($a) {
-      var $post_args, args, $iter = $Object_each$30.$$p, $yield = $iter || nil, self = this;
+    $def(self, '$each', function $$each($a) {
+      var $post_args, args, $yield = $$each.$$p || nil, self = this;
 
-      if ($iter) $Object_each$30.$$p = null;
+      delete $$each.$$p;
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
       if (($yield !== nil)) {
@@ -420,11 +383,11 @@ Opal.modules["native"] = function(Opal) {
       ;
         return self;
       } else {
-        return $send(self, 'method_missing', ["each"].concat(Opal.to_a(args)))
+        return $send(self, 'method_missing', ["each"].concat($to_a(args)))
       };
-    }, $Object_each$30.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$[]', $Object_$$$31 = function(key) {
+    $def(self, '$[]', function $Object_$$$16(key) {
       var self = this;
 
       
@@ -434,179 +397,157 @@ Opal.modules["native"] = function(Opal) {
         return prop;
       }
       else {
-        return $$$('::', 'Native').$call(self["native"], key)
+        return $$$('Native').$call(self["native"], key)
       }
     
-    }, $Object_$$$31.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$[]=', $Object_$$$eq$32 = function(key, value) {
+    $def(self, '$[]=', function $Object_$$$eq$17(key, value) {
       var self = this, native$ = nil;
 
       
-      native$ = $$$('::', 'Native').$try_convert(value);
+      native$ = $$$('Native').$try_convert(value);
       if ($truthy(native$ === nil)) {
         return self["native"][key] = value
       } else {
         return self["native"][key] = native$
       };
-    }, $Object_$$$eq$32.$$arity = 2);
+    }, 2);
     
-    Opal.def(self, '$merge!', $Object_merge$excl$33 = function(other) {
+    $def(self, '$merge!', function $Object_merge$excl$18(other) {
       var self = this;
 
       
       
-      other = $$$('::', 'Native').$convert(other);
+      other = $$$('Native').$convert(other);
 
       for (var prop in other) {
         self["native"][prop] = other[prop];
       }
     ;
       return self;
-    }, $Object_merge$excl$33.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$respond_to?', $Object_respond_to$ques$34 = function(name, include_all) {
+    $def(self, '$respond_to?', function $Object_respond_to$ques$19(name, include_all) {
       var self = this;
 
       
       
-      if (include_all == null) {
-        include_all = false;
-      };
-      return $$$('::', 'Kernel').$instance_method("respond_to?").$bind(self).$call(name, include_all);
-    }, $Object_respond_to$ques$34.$$arity = -2);
+      if (include_all == null) include_all = false;;
+      return $Kernel.$instance_method("respond_to?").$bind(self).$call(name, include_all);
+    }, -2);
     
-    Opal.def(self, '$respond_to_missing?', $Object_respond_to_missing$ques$35 = function(name, include_all) {
+    $def(self, '$respond_to_missing?', function $Object_respond_to_missing$ques$20(name, include_all) {
       var self = this;
 
       
       
-      if (include_all == null) {
-        include_all = false;
-      };
+      if (include_all == null) include_all = false;;
       return Opal.hasOwnProperty.call(self["native"], name);
-    }, $Object_respond_to_missing$ques$35.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$method_missing', $Object_method_missing$36 = function $$method_missing(mid, $a) {
-      var $iter = $Object_method_missing$36.$$p, block = $iter || nil, $post_args, args, self = this, $writer = nil;
+    $def(self, '$method_missing', function $$method_missing(mid, $a) {
+      var block = $$method_missing.$$p || nil, $post_args, args, self = this, $writer = nil;
 
-      if ($iter) $Object_method_missing$36.$$p = null;
-      
+      delete $$method_missing.$$p;
       
-      if ($iter) $Object_method_missing$36.$$p = null;;
+      ;
       
-      $post_args = Opal.slice.call(arguments, 1, arguments.length);
+      $post_args = Opal.slice.call(arguments, 1);
       
       args = $post_args;;
       
       if (mid.charAt(mid.length - 1) === '=') {
-        return (($writer = [mid.$slice(0, $rb_minus(mid.$length(), 1)), args['$[]'](0)]), $send(self, '[]=', Opal.to_a($writer)), $writer[$rb_minus($writer["length"], 1)]);
+        return (($writer = [mid.$slice(0, $rb_minus(mid.$length(), 1)), args['$[]'](0)]), $send(self, '[]=', $to_a($writer)), $writer[$rb_minus($writer["length"], 1)]);
       }
       else {
-        return $send($$$('::', 'Native'), 'call', [self["native"], mid].concat(Opal.to_a(args)), block.$to_proc());
+        return $send($$$('Native'), 'call', [self["native"], mid].concat($to_a(args)), block.$to_proc());
       }
     ;
-    }, $Object_method_missing$36.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$nil?', $Object_nil$ques$37 = function() {
-      var self = this;
-
+    $def(self, '$nil?', function $Object_nil$ques$21() {
+      
       return false
-    }, $Object_nil$ques$37.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$is_a?', $Object_is_a$ques$38 = function(klass) {
+    $def(self, '$is_a?', function $Object_is_a$ques$22(klass) {
       var self = this;
 
       return Opal.is_a(self, klass);
-    }, $Object_is_a$ques$38.$$arity = 1);
-    $alias(self, "kind_of?", "is_a?");
+    }, 1);
     
-    Opal.def(self, '$instance_of?', $Object_instance_of$ques$39 = function(klass) {
+    $def(self, '$instance_of?', function $Object_instance_of$ques$23(klass) {
       var self = this;
 
       return self.$$class === klass;
-    }, $Object_instance_of$ques$39.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$class', $Object_class$40 = function() {
+    $def(self, '$class', function $Object_class$24() {
       var self = this;
 
       return self.$$class;
-    }, $Object_class$40.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_a', $Object_to_a$41 = function $$to_a(options) {
-      var $iter = $Object_to_a$41.$$p, block = $iter || nil, self = this;
+    $def(self, '$to_a', function $$to_a(options) {
+      var block = $$to_a.$$p || nil, self = this;
 
-      if ($iter) $Object_to_a$41.$$p = null;
+      delete $$to_a.$$p;
       
+      ;
       
-      if ($iter) $Object_to_a$41.$$p = null;;
-      
-      if (options == null) {
-        options = $hash2([], {});
-      };
-      return $send($$$($$$('::', 'Native'), 'Array'), 'new', [self["native"], options], block.$to_proc()).$to_a();
-    }, $Object_to_a$41.$$arity = -1);
-    return (Opal.def(self, '$inspect', $Object_inspect$42 = function $$inspect() {
+      if (options == null) options = $hash2([], {});;
+      return $send($$$($$$('Native'), 'Array'), 'new', [self["native"], options], block.$to_proc()).$to_a();
+    }, -1);
+    
+    $def(self, '$inspect', function $$inspect() {
       var self = this;
 
-      return "" + "#<Native:" + (String(self["native"])) + ">"
-    }, $Object_inspect$42.$$arity = 0), nil) && 'inspect';
-  })($$($nesting, 'Native'), $$($nesting, 'BasicObject'), $nesting);
+      return "#<Native:" + (String(self["native"])) + ">"
+    }, 0);
+    $alias(self, "include?", "has_key?");
+    $alias(self, "key?", "has_key?");
+    $alias(self, "kind_of?", "is_a?");
+    return $alias(self, "member?", "has_key?");
+  })($$('Native'), $$('BasicObject'));
   (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Array');
 
-    var $nesting = [self].concat($parent_nesting), $Array_initialize$43, $Array_each$44, $Array_$$$45, $Array_$$$eq$46, $Array_last$47, $Array_length$48, $Array_inspect$49;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-    self.$$prototype.named = self.$$prototype["native"] = self.$$prototype.get = self.$$prototype.block = self.$$prototype.set = self.$$prototype.length = nil;
+    $proto.named = $proto["native"] = $proto.get = $proto.block = $proto.set = $proto.length = nil;
     
-    self.$include($$$($$($nesting, 'Native'), 'Wrapper'));
-    self.$include($$($nesting, 'Enumerable'));
+    self.$include($$$($$('Native'), 'Wrapper'));
+    self.$include($$('Enumerable'));
     
-    Opal.def(self, '$initialize', $Array_initialize$43 = function $$initialize(native$, options) {
-      var $iter = $Array_initialize$43.$$p, block = $iter || nil, self = this, $ret_or_1 = nil, $ret_or_2 = nil, $ret_or_3 = nil;
+    $def(self, '$initialize', function $$initialize(native$, options) {
+      var block = $$initialize.$$p || nil, self = this, $ret_or_1 = nil;
 
-      if ($iter) $Array_initialize$43.$$p = null;
-      
+      delete $$initialize.$$p;
       
-      if ($iter) $Array_initialize$43.$$p = null;;
+      ;
       
-      if (options == null) {
-        options = $hash2([], {});
-      };
-      $send2(self, $find_super(self, 'initialize', $Array_initialize$43, false, true), 'initialize', [native$], null);
-      self.get = (function() {if ($truthy(($ret_or_1 = options['$[]']("get")))) {
-        return $ret_or_1
-      } else {
-        return options['$[]']("access")
-      }; return nil; })();
+      if (options == null) options = $hash2([], {});;
+      $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [native$], null);
+      self.get = ($truthy(($ret_or_1 = options['$[]']("get"))) ? ($ret_or_1) : (options['$[]']("access")));
       self.named = options['$[]']("named");
-      self.set = (function() {if ($truthy(($ret_or_2 = options['$[]']("set")))) {
-        return $ret_or_2
-      } else {
-        return options['$[]']("access")
-      }; return nil; })();
-      self.length = (function() {if ($truthy(($ret_or_3 = options['$[]']("length")))) {
-        return $ret_or_3
-      } else {
-        return "length"
-      }; return nil; })();
+      self.set = ($truthy(($ret_or_1 = options['$[]']("set"))) ? ($ret_or_1) : (options['$[]']("access")));
+      self.length = ($truthy(($ret_or_1 = options['$[]']("length"))) ? ($ret_or_1) : ("length"));
       self.block = block;
       if ($truthy(self.$length() == null)) {
-        return self.$raise($$($nesting, 'ArgumentError'), "no length found on the array-like object")
+        return self.$raise($$('ArgumentError'), "no length found on the array-like object")
       } else {
         return nil
       };
-    }, $Array_initialize$43.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$each', $Array_each$44 = function $$each() {
-      var $iter = $Array_each$44.$$p, block = $iter || nil, self = this;
+    $def(self, '$each', function $$each() {
+      var block = $$each.$$p || nil, self = this;
 
-      if ($iter) $Array_each$44.$$p = null;
-      
+      delete $$each.$$p;
       
-      if ($iter) $Array_each$44.$$p = null;;
-      if ($truthy(block)) {
-      } else {
+      ;
+      if (!$truthy(block)) {
         return self.$enum_for("each")
       };
       
@@ -615,24 +556,13 @@ Opal.modules["native"] = function(Opal) {
       }
     ;
       return self;
-    }, $Array_each$44.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$[]', $Array_$$$45 = function(index) {
-      var self = this, result = nil, $case = nil;
+    $def(self, '$[]', function $Array_$$$25(index) {
+      var self = this, result = nil, $ret_or_1 = nil;
 
       
-      result = (function() {$case = index;
-      if ($$($nesting, 'String')['$===']($case) || $$($nesting, 'Symbol')['$===']($case)) {if ($truthy(self.named)) {
-        return self["native"][self.named](index)
-      } else {
-        return self["native"][index]
-      }}
-      else if ($$($nesting, 'Integer')['$===']($case)) {if ($truthy(self.get)) {
-        return self["native"][self.get](index)
-      } else {
-        return self["native"][index]
-      }}
-      else { return nil }})();
+      result = (($eqeqeq($$('String'), ($ret_or_1 = index)) || ($eqeqeq($$('Symbol'), $ret_or_1))) ? (($truthy(self.named) ? (self["native"][self.named](index)) : (self["native"][index]))) : ($eqeqeq($$('Integer'), $ret_or_1) ? (($truthy(self.get) ? (self["native"][self.get](index)) : (self["native"][index]))) : (nil)));
       if ($truthy(result)) {
         if ($truthy(self.block)) {
           return self.block.$call(result)
@@ -642,26 +572,24 @@ Opal.modules["native"] = function(Opal) {
       } else {
         return nil
       };
-    }, $Array_$$$45.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$[]=', $Array_$$$eq$46 = function(index, value) {
+    $def(self, '$[]=', function $Array_$$$eq$26(index, value) {
       var self = this;
 
       if ($truthy(self.set)) {
-        return self["native"][self.set](index, $$($nesting, 'Native').$convert(value))
+        return self["native"][self.set](index, $$('Native').$convert(value))
       } else {
-        return self["native"][index] = $$($nesting, 'Native').$convert(value)
+        return self["native"][index] = $$('Native').$convert(value)
       }
-    }, $Array_$$$eq$46.$$arity = 2);
+    }, 2);
     
-    Opal.def(self, '$last', $Array_last$47 = function $$last(count) {
+    $def(self, '$last', function $$last(count) {
       var $a, self = this, index = nil, result = nil;
 
       
       
-      if (count == null) {
-        count = nil;
-      };
+      if (count == null) count = nil;;
       if ($truthy(count)) {
         
         index = $rb_minus(self.$length(), 1);
@@ -675,107 +603,99 @@ Opal.modules["native"] = function(Opal) {
       } else {
         return self['$[]']($rb_minus(self.$length(), 1))
       };
-    }, $Array_last$47.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$length', $Array_length$48 = function $$length() {
+    $def(self, '$length', function $$length() {
       var self = this;
 
       return self["native"][self.length]
-    }, $Array_length$48.$$arity = 0);
-    $alias(self, "to_ary", "to_a");
-    return (Opal.def(self, '$inspect', $Array_inspect$49 = function $$inspect() {
+    }, 0);
+    
+    $def(self, '$inspect', function $$inspect() {
       var self = this;
 
       return self.$to_a().$inspect()
-    }, $Array_inspect$49.$$arity = 0), nil) && 'inspect';
-  })($$($nesting, 'Native'), null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 0);
+    return $alias(self, "to_ary", "to_a");
+  })($$('Native'), null, $nesting);
+  (function($base, $super) {
     var self = $klass($base, $super, 'Numeric');
 
-    var $nesting = [self].concat($parent_nesting), $Numeric_to_n$50;
-
-    return (Opal.def(self, '$to_n', $Numeric_to_n$50 = function $$to_n() {
+    
+    return $def(self, '$to_n', function $$to_n() {
       var self = this;
 
       return self.valueOf();
-    }, $Numeric_to_n$50.$$arity = 0), nil) && 'to_n'
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 0)
+  })($nesting[0], null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'Proc');
 
-    var $nesting = [self].concat($parent_nesting), $Proc_to_n$51;
-
-    return (Opal.def(self, '$to_n', $Proc_to_n$51 = function $$to_n() {
+    
+    return $def(self, '$to_n', function $$to_n() {
       var self = this;
 
       return self
-    }, $Proc_to_n$51.$$arity = 0), nil) && 'to_n'
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 0)
+  })($nesting[0], null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'String');
 
-    var $nesting = [self].concat($parent_nesting), $String_to_n$52;
-
-    return (Opal.def(self, '$to_n', $String_to_n$52 = function $$to_n() {
+    
+    return $def(self, '$to_n', function $$to_n() {
       var self = this;
 
       return self.valueOf();
-    }, $String_to_n$52.$$arity = 0), nil) && 'to_n'
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 0)
+  })($nesting[0], null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'Regexp');
 
-    var $nesting = [self].concat($parent_nesting), $Regexp_to_n$53;
-
-    return (Opal.def(self, '$to_n', $Regexp_to_n$53 = function $$to_n() {
+    
+    return $def(self, '$to_n', function $$to_n() {
       var self = this;
 
       return self.valueOf();
-    }, $Regexp_to_n$53.$$arity = 0), nil) && 'to_n'
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 0)
+  })($nesting[0], null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'MatchData');
 
-    var $nesting = [self].concat($parent_nesting), $MatchData_to_n$54;
+    var $proto = self.$$prototype;
 
-    self.$$prototype.matches = nil;
-    return (Opal.def(self, '$to_n', $MatchData_to_n$54 = function $$to_n() {
+    $proto.matches = nil;
+    return $def(self, '$to_n', function $$to_n() {
       var self = this;
 
       return self.matches
-    }, $MatchData_to_n$54.$$arity = 0), nil) && 'to_n'
-  })($nesting[0], null, $nesting);
+    }, 0)
+  })($nesting[0], null);
   (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Struct');
 
-    var $nesting = [self].concat($parent_nesting), $Struct_to_n$55;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-    return (Opal.def(self, '$to_n', $Struct_to_n$55 = function $$to_n() {
-      var $$56, self = this, result = nil;
+    return $def(self, '$to_n', function $$to_n() {
+      var self = this, result = nil;
 
       
       result = {};
-      $send(self, 'each_pair', [], ($$56 = function(name, value){var self = $$56.$$s == null ? this : $$56.$$s;
-
+      $send(self, 'each_pair', [], function $$27(name, value){
         
         
-        if (name == null) {
-          name = nil;
-        };
+        if (name == null) name = nil;;
         
-        if (value == null) {
-          value = nil;
-        };
-        return result[name] = $$($nesting, 'Native').$try_convert(value, value);}, $$56.$$s = self, $$56.$$arity = 2, $$56));
+        if (value == null) value = nil;;
+        return result[name] = $$('Native').$try_convert(value, value);}, 2);
       return result;
-    }, $Struct_to_n$55.$$arity = 0), nil) && 'to_n'
+    }, 0)
   })($nesting[0], null, $nesting);
   (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Array');
 
-    var $nesting = [self].concat($parent_nesting), $Array_to_n$57;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-    return (Opal.def(self, '$to_n', $Array_to_n$57 = function $$to_n() {
+    return $def(self, '$to_n', function $$to_n() {
       var self = this;
 
       
@@ -784,172 +704,167 @@ Opal.modules["native"] = function(Opal) {
       for (var i = 0, length = self.length; i < length; i++) {
         var obj = self[i];
 
-        result.push($$($nesting, 'Native').$try_convert(obj, obj));
+        result.push($$('Native').$try_convert(obj, obj));
       }
 
       return result;
     
-    }, $Array_to_n$57.$$arity = 0), nil) && 'to_n'
+    }, 0)
   })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+  (function($base, $super) {
     var self = $klass($base, $super, 'Boolean');
 
-    var $nesting = [self].concat($parent_nesting), $Boolean_to_n$58;
-
-    return (Opal.def(self, '$to_n', $Boolean_to_n$58 = function $$to_n() {
+    
+    return $def(self, '$to_n', function $$to_n() {
       var self = this;
 
       return self.valueOf();
-    }, $Boolean_to_n$58.$$arity = 0), nil) && 'to_n'
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 0)
+  })($nesting[0], null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'Time');
 
-    var $nesting = [self].concat($parent_nesting), $Time_to_n$59;
-
-    return (Opal.def(self, '$to_n', $Time_to_n$59 = function $$to_n() {
+    
+    return $def(self, '$to_n', function $$to_n() {
       var self = this;
 
       return self
-    }, $Time_to_n$59.$$arity = 0), nil) && 'to_n'
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 0)
+  })($nesting[0], null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'NilClass');
 
-    var $nesting = [self].concat($parent_nesting), $NilClass_to_n$60;
-
-    return (Opal.def(self, '$to_n', $NilClass_to_n$60 = function $$to_n() {
-      var self = this;
-
+    
+    return $def(self, '$to_n', function $$to_n() {
+      
       return null;
-    }, $NilClass_to_n$60.$$arity = 0), nil) && 'to_n'
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'Hash');
+    }, 0)
+  })($nesting[0], null);
+  if (!$truthy($$('Hash')['$method_defined?']("_initialize"))) {
+    (function($base, $super, $parent_nesting) {
+      var self = $klass($base, $super, 'Hash');
 
-    var $nesting = [self].concat($parent_nesting), $Hash_initialize$61, $Hash_to_n$62;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-    
-    $alias(self, "_initialize", "initialize");
-    
-    Opal.def(self, '$initialize', $Hash_initialize$61 = function $$initialize(defaults) {
-      var $iter = $Hash_initialize$61.$$p, block = $iter || nil, self = this;
-
-      if ($iter) $Hash_initialize$61.$$p = null;
       
+      $alias(self, "_initialize", "initialize");
       
-      if ($iter) $Hash_initialize$61.$$p = null;;
-      ;
-      
-      if (defaults != null &&
-           (defaults.constructor === undefined ||
-             defaults.constructor === Object)) {
-        var smap = self.$$smap,
-            keys = self.$$keys,
-            key, value;
+      $def(self, '$initialize', function $$initialize(defaults) {
+        var block = $$initialize.$$p || nil, self = this;
 
-        for (key in defaults) {
-          value = defaults[key];
-
-          if (value &&
-               (value.constructor === undefined ||
-                 value.constructor === Object)) {
-            smap[key] = $$($nesting, 'Hash').$new(value);
-          } else if (value && value.$$is_array) {
-            value = value.map(function(item) {
-              if (item &&
-                   (item.constructor === undefined ||
-                     item.constructor === Object)) {
-                return $$($nesting, 'Hash').$new(item);
-              }
-
-              return self.$Native(item);
-            });
-            smap[key] = value
-          } else {
-            smap[key] = self.$Native(value);
+        delete $$initialize.$$p;
+        
+        ;
+        ;
+        
+        if (defaults != null &&
+             (defaults.constructor === undefined ||
+               defaults.constructor === Object)) {
+          var smap = self.$$smap,
+              keys = self.$$keys,
+              key, value;
+
+          for (key in defaults) {
+            value = defaults[key];
+
+            if (value &&
+                 (value.constructor === undefined ||
+                   value.constructor === Object)) {
+              smap[key] = $$('Hash').$new(value);
+            } else if (value && value.$$is_array) {
+              value = value.map(function(item) {
+                if (item &&
+                     (item.constructor === undefined ||
+                       item.constructor === Object)) {
+                  return $$('Hash').$new(item);
+                }
+
+                return self.$Native(item);
+              });
+              smap[key] = value
+            } else {
+              smap[key] = self.$Native(value);
+            }
+
+            keys.push(key);
           }
 
-          keys.push(key);
+          return self;
         }
 
-        return self;
-      }
+        return $send(self, '_initialize', [defaults], block.$to_proc());
+      ;
+      }, -1);
+      return $def(self, '$to_n', function $$to_n() {
+        var self = this;
 
-      return $send(self, '_initialize', [defaults], block.$to_proc());
-    ;
-    }, $Hash_initialize$61.$$arity = -1);
-    return (Opal.def(self, '$to_n', $Hash_to_n$62 = function $$to_n() {
-      var self = this;
+        
+        var result = {},
+            keys = self.$$keys,
+            smap = self.$$smap,
+            key, value;
 
-      
-      var result = {},
-          keys = self.$$keys,
-          smap = self.$$smap,
-          key, value;
+        for (var i = 0, length = keys.length; i < length; i++) {
+          key = keys[i];
 
-      for (var i = 0, length = keys.length; i < length; i++) {
-        key = keys[i];
+          if (key.$$is_string) {
+            value = smap[key];
+          } else {
+            key = key.key;
+            value = key.value;
+          }
 
-        if (key.$$is_string) {
-          value = smap[key];
-        } else {
-          key = key.key;
-          value = key.value;
+          result[key] = $$('Native').$try_convert(value, value);
         }
 
-        result[key] = $$($nesting, 'Native').$try_convert(value, value);
-      }
-
-      return result;
-    
-    }, $Hash_to_n$62.$$arity = 0), nil) && 'to_n';
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+        return result;
+      
+      }, 0);
+    })($nesting[0], null, $nesting)
+  };
+  (function($base, $super) {
     var self = $klass($base, $super, 'Module');
 
-    var $nesting = [self].concat($parent_nesting), $Module_native_module$63;
-
-    return (Opal.def(self, '$native_module', $Module_native_module$63 = function $$native_module() {
+    
+    return $def(self, '$native_module', function $$native_module() {
       var self = this;
 
       return Opal.global[self.$name()] = self
-    }, $Module_native_module$63.$$arity = 0), nil) && 'native_module'
-  })($nesting[0], null, $nesting);
+    }, 0)
+  })($nesting[0], null);
   (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Class');
 
-    var $nesting = [self].concat($parent_nesting), $Class_native_alias$64, $Class_native_class$65;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
     
-    Opal.def(self, '$native_alias', $Class_native_alias$64 = function $$native_alias(new_jsid, existing_mid) {
+    $def(self, '$native_alias', function $$native_alias(new_jsid, existing_mid) {
       var self = this;
 
       
       var aliased = self.prototype['$' + existing_mid];
       if (!aliased) {
-        self.$raise($$($nesting, 'NameError').$new("" + "undefined method `" + (existing_mid) + "' for class `" + (self.$inspect()) + "'", existing_mid));
+        self.$raise($$('NameError').$new("undefined method `" + (existing_mid) + "' for class `" + (self.$inspect()) + "'", existing_mid));
       }
       self.prototype[new_jsid] = aliased;
     
-    }, $Class_native_alias$64.$$arity = 2);
-    return (Opal.def(self, '$native_class', $Class_native_class$65 = function $$native_class() {
+    }, 2);
+    return $def(self, '$native_class', function $$native_class() {
       var self = this;
 
       
       self.$native_module();
       return self["new"] = self.$new;;
-    }, $Class_native_class$65.$$arity = 0), nil) && 'native_class';
+    }, 0);
   })($nesting[0], null, $nesting);
   return ($gvars.$ = ($gvars.global = self.$Native(Opal.global)));
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["buffer/array"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $gvars = Opal.gvars, $send2 = Opal.send2, $find_super = Opal.find_super, $truthy = Opal.truthy, $alias = Opal.alias;
+Opal.modules["buffer/array"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $gvars = Opal.gvars, $defs = Opal.defs, $eqeq = Opal.eqeq, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def, $truthy = Opal.truthy, $alias = Opal.alias;
 
-  Opal.add_stubs(['$include', '$[]', '$name_for', '$attr_reader', '$==', '$for', '$to_n', '$enum_for']);
+  Opal.add_stubs('include,[],name_for,attr_reader,==,for,to_n,enum_for');
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Buffer');
 
@@ -958,86 +873,78 @@ Opal.modules["buffer/array"] = function(Opal) {
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Array');
 
-      var $nesting = [self].concat($parent_nesting), $Array_for$1, $Array_initialize$2, $Array_bits$3, $Array_$$$4, $Array_$$$eq$5, $Array_bytesize$6, $Array_each$7, $Array_length$8, $Array_merge$excl$9;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype["native"] = nil;
+      $proto["native"] = nil;
       
-      self.$include($$$($$($nesting, 'Native'), 'Wrapper'));
-      Opal.defs(self, '$for', $Array_for$1 = function(bits, type) {
-        var self = this;
-        if ($gvars.$ == null) $gvars.$ = nil;
+      self.$include($$$($$('Native'), 'Wrapper'));
+      $defs(self, '$for', function $Array_for$1(bits, type) {
+                if ($gvars.$ == null) $gvars.$ = nil;
 
-        return $gvars.$['$[]']("" + ($$($nesting, 'Buffer').$name_for(bits, type)) + "Array")
-      }, $Array_for$1.$$arity = 2);
-      self.$include($$($nesting, 'Enumerable'));
+        return $gvars.$['$[]']("" + ($$('Buffer').$name_for(bits, type)) + "Array")
+      }, 2);
+      self.$include($$('Enumerable'));
       self.$attr_reader("buffer", "type");
       
-      Opal.def(self, '$initialize', $Array_initialize$2 = function $$initialize(buffer, bits, type) {
-        var $iter = $Array_initialize$2.$$p, $yield = $iter || nil, self = this;
+      $def(self, '$initialize', function $$initialize(buffer, bits, type) {
+        var $yield = $$initialize.$$p || nil, self = this;
 
-        if ($iter) $Array_initialize$2.$$p = null;
+        delete $$initialize.$$p;
         
         
-        if (bits == null) {
-          bits = nil;
-        };
+        if (bits == null) bits = nil;;
         
-        if (type == null) {
-          type = nil;
-        };
-        if ($$($nesting, 'Native')['$=='](buffer)) {
-          $send2(self, $find_super(self, 'initialize', $Array_initialize$2, false, true), 'initialize', [buffer], null)
+        if (type == null) type = nil;;
+        if ($eqeq($$('Native'), buffer)) {
+          $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [buffer], null)
         } else {
           
-          var klass = $$($nesting, 'Array').$for(bits, type);
+          var klass = $$('Array').$for(bits, type);
 
-          $send2(self, $find_super(self, 'initialize', $Array_initialize$2, false, true), 'initialize', [new klass(buffer.$to_n())], null)
+          $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [new klass(buffer.$to_n())], null)
         
         };
         self.buffer = buffer;
         return (self.type = type);
-      }, $Array_initialize$2.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$bits', $Array_bits$3 = function $$bits() {
+      $def(self, '$bits', function $$bits() {
         var self = this;
 
         return self["native"].BYTES_PER_ELEMENT * 8
-      }, $Array_bits$3.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$[]', $Array_$$$4 = function(index, offset) {
+      $def(self, '$[]', function $Array_$$$2(index, offset) {
         var self = this;
 
         
         
-        if (offset == null) {
-          offset = nil;
-        };
+        if (offset == null) offset = nil;;
         if ($truthy(offset)) {
           return self["native"].subarray(index, offset)
         } else {
           return self["native"][index]
         };
-      }, $Array_$$$4.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$[]=', $Array_$$$eq$5 = function(index, value) {
+      $def(self, '$[]=', function $Array_$$$eq$3(index, value) {
         var self = this;
 
         return self["native"][index] = value
-      }, $Array_$$$eq$5.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$bytesize', $Array_bytesize$6 = function $$bytesize() {
+      $def(self, '$bytesize', function $$bytesize() {
         var self = this;
 
         return self["native"].byteLength
-      }, $Array_bytesize$6.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$each', $Array_each$7 = function $$each() {
-        var $iter = $Array_each$7.$$p, $yield = $iter || nil, self = this;
+      $def(self, '$each', function $$each() {
+        var $yield = $$each.$$p || nil, self = this;
 
-        if ($iter) $Array_each$7.$$p = null;
+        delete $$each.$$p;
         
-        if (($yield !== nil)) {
-        } else {
+        if (!($yield !== nil)) {
           return self.$enum_for("each")
         };
         
@@ -1046,31 +953,30 @@ Opal.modules["buffer/array"] = function(Opal) {
         }
       ;
         return self;
-      }, $Array_each$7.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$length', $Array_length$8 = function $$length() {
+      $def(self, '$length', function $$length() {
         var self = this;
 
         return self["native"].length
-      }, $Array_length$8.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$merge!', $Array_merge$excl$9 = function(other, offset) {
+      $def(self, '$merge!', function $Array_merge$excl$4(other, offset) {
         var self = this;
 
         
         ;
         return self["native"].set(other.$to_n(), offset);
-      }, $Array_merge$excl$9.$$arity = -2);
+      }, -2);
       return $alias(self, "size", "length");
     })($nesting[0], null, $nesting)
   })($nesting[0], null, $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["buffer/view"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $gvars = Opal.gvars, $truthy = Opal.truthy, $send2 = Opal.send2, $find_super = Opal.find_super, $alias = Opal.alias;
+Opal.modules["buffer/view"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $gvars = Opal.gvars, $defs = Opal.defs, $truthy = Opal.truthy, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def, $alias = Opal.alias;
 
-  Opal.add_stubs(['$include', '$!', '$nil?', '$[]', '$attr_reader', '$native?', '$to_n', '$name_for']);
+  Opal.add_stubs('include,!,nil?,[],attr_reader,native?,to_n,name_for');
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Buffer');
 
@@ -1079,279 +985,226 @@ Opal.modules["buffer/view"] = function(Opal) {
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'View');
 
-      var $nesting = [self].concat($parent_nesting), $View_supported$ques$1, $View_initialize$2, $View_length$3, $View_get$4, $View_set$5, $View_get_int8$6, $View_set_int8$7, $View_get_uint8$8, $View_set_uint8$9, $View_get_int16$10, $View_set_int16$11, $View_get_uint16$12, $View_set_uint16$13, $View_get_int32$14, $View_set_int32$15, $View_get_uint32$16, $View_set_uint32$17, $View_get_float32$18, $View_set_float32$19, $View_get_float64$20, $View_set_float64$21;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype["native"] = nil;
+      $proto["native"] = nil;
       
-      self.$include($$$($$($nesting, 'Native'), 'Wrapper'));
-      Opal.defs(self, '$supported?', $View_supported$ques$1 = function() {
-        var self = this;
-        if ($gvars.$ == null) $gvars.$ = nil;
+      self.$include($$$($$('Native'), 'Wrapper'));
+      $defs(self, '$supported?', function $View_supported$ques$1() {
+                if ($gvars.$ == null) $gvars.$ = nil;
 
         return $gvars.$['$[]']("DataView")['$nil?']()['$!']()
-      }, $View_supported$ques$1.$$arity = 0);
+      }, 0);
       self.$attr_reader("buffer", "offset");
       
-      Opal.def(self, '$initialize', $View_initialize$2 = function $$initialize(buffer, offset, length) {
-        var $iter = $View_initialize$2.$$p, $yield = $iter || nil, self = this, $ret_or_1 = nil;
+      $def(self, '$initialize', function $$initialize(buffer, offset, length) {
+        var $yield = $$initialize.$$p || nil, self = this;
 
-        if ($iter) $View_initialize$2.$$p = null;
+        delete $$initialize.$$p;
         
         
-        if (offset == null) {
-          offset = nil;
-        };
+        if (offset == null) offset = nil;;
         
-        if (length == null) {
-          length = nil;
-        };
+        if (length == null) length = nil;;
         if ($truthy(self['$native?'](buffer))) {
-          $send2(self, $find_super(self, 'initialize', $View_initialize$2, false, true), 'initialize', [buffer], null)
-        } else if ($truthy((function() {if ($truthy(($ret_or_1 = offset))) {
-          return length
-        } else {
-          return $ret_or_1
-        }; return nil; })())) {
-          $send2(self, $find_super(self, 'initialize', $View_initialize$2, false, true), 'initialize', [new DataView(buffer.$to_n(), offset.$to_n(), length.$to_n())], null)
+          $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [buffer], null)
+        } else if (($truthy(offset) && ($truthy(length)))) {
+          $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [new DataView(buffer.$to_n(), offset.$to_n(), length.$to_n())], null)
         } else if ($truthy(offset)) {
-          $send2(self, $find_super(self, 'initialize', $View_initialize$2, false, true), 'initialize', [new DataView(buffer.$to_n(), offset.$to_n())], null)
+          $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [new DataView(buffer.$to_n(), offset.$to_n())], null)
         } else {
-          $send2(self, $find_super(self, 'initialize', $View_initialize$2, false, true), 'initialize', [new DataView(buffer.$to_n())], null)
+          $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [new DataView(buffer.$to_n())], null)
         };
         self.buffer = buffer;
         return (self.offset = offset);
-      }, $View_initialize$2.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$length', $View_length$3 = function $$length() {
+      $def(self, '$length', function $$length() {
         var self = this;
 
         return self["native"].byteLength
-      }, $View_length$3.$$arity = 0);
-      $alias(self, "size", "length");
+      }, 0);
       
-      Opal.def(self, '$get', $View_get$4 = function $$get(offset, bits, type, little) {
+      $def(self, '$get', function $$get(offset, bits, type, little) {
         var self = this;
 
         
         
-        if (bits == null) {
-          bits = 8;
-        };
+        if (bits == null) bits = 8;;
         
-        if (type == null) {
-          type = "unsigned";
-        };
+        if (type == null) type = "unsigned";;
         
-        if (little == null) {
-          little = false;
-        };
-        return self["native"]["get" + $$($nesting, 'Buffer').$name_for(bits, type)](offset, little);
-      }, $View_get$4.$$arity = -2);
+        if (little == null) little = false;;
+        return self["native"]["get" + $$('Buffer').$name_for(bits, type)](offset, little);
+      }, -2);
       $alias(self, "[]", "get");
       
-      Opal.def(self, '$set', $View_set$5 = function $$set(offset, value, bits, type, little) {
+      $def(self, '$set', function $$set(offset, value, bits, type, little) {
         var self = this;
 
         
         
-        if (bits == null) {
-          bits = 8;
-        };
+        if (bits == null) bits = 8;;
         
-        if (type == null) {
-          type = "unsigned";
-        };
+        if (type == null) type = "unsigned";;
         
-        if (little == null) {
-          little = false;
-        };
-        return self["native"]["set" + $$($nesting, 'Buffer').$name_for(bits, type)](offset, value, little);
-      }, $View_set$5.$$arity = -3);
+        if (little == null) little = false;;
+        return self["native"]["set" + $$('Buffer').$name_for(bits, type)](offset, value, little);
+      }, -3);
       $alias(self, "[]=", "set");
       
-      Opal.def(self, '$get_int8', $View_get_int8$6 = function $$get_int8(offset, little) {
+      $def(self, '$get_int8', function $$get_int8(offset, little) {
         var self = this;
 
         
         
-        if (little == null) {
-          little = false;
-        };
+        if (little == null) little = false;;
         return self["native"].getInt8(offset, little);
-      }, $View_get_int8$6.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$set_int8', $View_set_int8$7 = function $$set_int8(offset, value, little) {
+      $def(self, '$set_int8', function $$set_int8(offset, value, little) {
         var self = this;
 
         
         
-        if (little == null) {
-          little = false;
-        };
+        if (little == null) little = false;;
         return self["native"].setInt8(offset, value, little);
-      }, $View_set_int8$7.$$arity = -3);
+      }, -3);
       
-      Opal.def(self, '$get_uint8', $View_get_uint8$8 = function $$get_uint8(offset, little) {
+      $def(self, '$get_uint8', function $$get_uint8(offset, little) {
         var self = this;
 
         
         
-        if (little == null) {
-          little = false;
-        };
+        if (little == null) little = false;;
         return self["native"].getUint8(offset, little);
-      }, $View_get_uint8$8.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$set_uint8', $View_set_uint8$9 = function $$set_uint8(offset, value, little) {
+      $def(self, '$set_uint8', function $$set_uint8(offset, value, little) {
         var self = this;
 
         
         
-        if (little == null) {
-          little = false;
-        };
+        if (little == null) little = false;;
         return self["native"].setUint8(offset, value, little);
-      }, $View_set_uint8$9.$$arity = -3);
+      }, -3);
       
-      Opal.def(self, '$get_int16', $View_get_int16$10 = function $$get_int16(offset, little) {
+      $def(self, '$get_int16', function $$get_int16(offset, little) {
         var self = this;
 
         
         
-        if (little == null) {
-          little = false;
-        };
+        if (little == null) little = false;;
         return self["native"].getInt16(offset, little);
-      }, $View_get_int16$10.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$set_int16', $View_set_int16$11 = function $$set_int16(offset, value, little) {
+      $def(self, '$set_int16', function $$set_int16(offset, value, little) {
         var self = this;
 
         
         
-        if (little == null) {
-          little = false;
-        };
+        if (little == null) little = false;;
         return self["native"].setInt16(offset, value, little);
-      }, $View_set_int16$11.$$arity = -3);
+      }, -3);
       
-      Opal.def(self, '$get_uint16', $View_get_uint16$12 = function $$get_uint16(offset, little) {
+      $def(self, '$get_uint16', function $$get_uint16(offset, little) {
         var self = this;
 
         
         
-        if (little == null) {
-          little = false;
-        };
+        if (little == null) little = false;;
         return self["native"].getUint16(offset, little);
-      }, $View_get_uint16$12.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$set_uint16', $View_set_uint16$13 = function $$set_uint16(offset, value, little) {
+      $def(self, '$set_uint16', function $$set_uint16(offset, value, little) {
         var self = this;
 
         
         
-        if (little == null) {
-          little = false;
-        };
+        if (little == null) little = false;;
         return self["native"].setUint16(offset, value, little);
-      }, $View_set_uint16$13.$$arity = -3);
+      }, -3);
       
-      Opal.def(self, '$get_int32', $View_get_int32$14 = function $$get_int32(offset, little) {
+      $def(self, '$get_int32', function $$get_int32(offset, little) {
         var self = this;
 
         
         
-        if (little == null) {
-          little = false;
-        };
+        if (little == null) little = false;;
         return self["native"].getInt32(offset, little);
-      }, $View_get_int32$14.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$set_int32', $View_set_int32$15 = function $$set_int32(offset, value, little) {
+      $def(self, '$set_int32', function $$set_int32(offset, value, little) {
         var self = this;
 
         
         
-        if (little == null) {
-          little = false;
-        };
+        if (little == null) little = false;;
         return self["native"].setInt32(offset, value, little);
-      }, $View_set_int32$15.$$arity = -3);
+      }, -3);
       
-      Opal.def(self, '$get_uint32', $View_get_uint32$16 = function $$get_uint32(offset, little) {
+      $def(self, '$get_uint32', function $$get_uint32(offset, little) {
         var self = this;
 
         
         
-        if (little == null) {
-          little = false;
-        };
+        if (little == null) little = false;;
         return self["native"].getUint32(offset, little);
-      }, $View_get_uint32$16.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$set_uint32', $View_set_uint32$17 = function $$set_uint32(offset, value, little) {
+      $def(self, '$set_uint32', function $$set_uint32(offset, value, little) {
         var self = this;
 
         
         
-        if (little == null) {
-          little = false;
-        };
+        if (little == null) little = false;;
         return self["native"].setUint32(offset, value, little);
-      }, $View_set_uint32$17.$$arity = -3);
+      }, -3);
       
-      Opal.def(self, '$get_float32', $View_get_float32$18 = function $$get_float32(offset, little) {
+      $def(self, '$get_float32', function $$get_float32(offset, little) {
         var self = this;
 
         
         
-        if (little == null) {
-          little = false;
-        };
+        if (little == null) little = false;;
         return self["native"].getFloat32(offset, little);
-      }, $View_get_float32$18.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$set_float32', $View_set_float32$19 = function $$set_float32(offset, value, little) {
+      $def(self, '$set_float32', function $$set_float32(offset, value, little) {
         var self = this;
 
         
         
-        if (little == null) {
-          little = false;
-        };
+        if (little == null) little = false;;
         return self["native"].setFloat32(offset, value, little);
-      }, $View_set_float32$19.$$arity = -3);
+      }, -3);
       
-      Opal.def(self, '$get_float64', $View_get_float64$20 = function $$get_float64(offset, little) {
+      $def(self, '$get_float64', function $$get_float64(offset, little) {
         var self = this;
 
         
         
-        if (little == null) {
-          little = false;
-        };
+        if (little == null) little = false;;
         return self["native"].getFloat64(offset, little);
-      }, $View_get_float64$20.$$arity = -2);
-      return (Opal.def(self, '$set_float64', $View_set_float64$21 = function $$set_float64(offset, value, little) {
+      }, -2);
+      
+      $def(self, '$set_float64', function $$set_float64(offset, value, little) {
         var self = this;
 
         
         
-        if (little == null) {
-          little = false;
-        };
+        if (little == null) little = false;;
         return self["native"].setFloat64(offset, value, little);
-      }, $View_set_float64$21.$$arity = -3), nil) && 'set_float64';
+      }, -3);
+      return $alias(self, "size", "length");
     })($nesting[0], null, $nesting)
   })($nesting[0], null, $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["buffer"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $gvars = Opal.gvars, $truthy = Opal.truthy, $send2 = Opal.send2, $find_super = Opal.find_super, $alias = Opal.alias;
+Opal.modules["buffer"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $gvars = Opal.gvars, $defs = Opal.defs, $eqeqeq = Opal.eqeqeq, $truthy = Opal.truthy, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def, $alias = Opal.alias;
 
-  Opal.add_stubs(['$require', '$include', '$!', '$nil?', '$[]', '$===', '$native?', '$new']);
+  Opal.add_stubs('require,include,!,nil?,[],===,native?,new,pack,to_a');
   
   self.$require("native");
   self.$require("buffer/array");
@@ -1359,79 +1212,71 @@ Opal.modules["buffer"] = function(Opal) {
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Buffer');
 
-    var $nesting = [self].concat($parent_nesting), $Buffer_supported$ques$1, $Buffer_name_for$2, $Buffer_initialize$3, $Buffer_length$4, $Buffer_to_a$5, $Buffer_view$6;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-    self.$$prototype["native"] = nil;
+    $proto["native"] = nil;
     
-    self.$include($$$($$($nesting, 'Native'), 'Wrapper'));
-    Opal.defs(self, '$supported?', $Buffer_supported$ques$1 = function() {
-      var self = this;
-      if ($gvars.$ == null) $gvars.$ = nil;
+    self.$include($$$($$('Native'), 'Wrapper'));
+    $defs(self, '$supported?', function $Buffer_supported$ques$1() {
+            if ($gvars.$ == null) $gvars.$ = nil;
 
       return $gvars.$['$[]']("ArrayBuffer")['$nil?']()['$!']()
-    }, $Buffer_supported$ques$1.$$arity = 0);
-    Opal.defs(self, '$name_for', $Buffer_name_for$2 = function $$name_for(bits, type) {
-      var self = this, part = nil, $case = nil;
+    }, 0);
+    $defs(self, '$name_for', function $$name_for(bits, type) {
+      var part = nil, $ret_or_1 = nil;
 
       
-      part = (function() {$case = type;
-      if ("unsigned"['$===']($case)) {return "Uint"}
-      else if ("signed"['$===']($case)) {return "Int"}
-      else if ("float"['$===']($case)) {return "Float"}
-      else { return nil }})();
+      part = ($eqeqeq("unsigned", ($ret_or_1 = type)) ? ("Uint") : ($eqeqeq("signed", $ret_or_1) ? ("Int") : ($eqeqeq("float", $ret_or_1) ? ("Float") : (nil))));
       return "" + (part) + (bits);
-    }, $Buffer_name_for$2.$$arity = 2);
+    }, 2);
     
-    Opal.def(self, '$initialize', $Buffer_initialize$3 = function $$initialize(size, bits) {
-      var $iter = $Buffer_initialize$3.$$p, $yield = $iter || nil, self = this;
+    $def(self, '$initialize', function $$initialize(size, bits) {
+      var $yield = $$initialize.$$p || nil, self = this;
 
-      if ($iter) $Buffer_initialize$3.$$p = null;
+      delete $$initialize.$$p;
       
       
-      if (bits == null) {
-        bits = 8;
-      };
+      if (bits == null) bits = 8;;
       if ($truthy(self['$native?'](size))) {
-        return $send2(self, $find_super(self, 'initialize', $Buffer_initialize$3, false, true), 'initialize', [size], null)
+        return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [size], null)
       } else {
-        return $send2(self, $find_super(self, 'initialize', $Buffer_initialize$3, false, true), 'initialize', [new ArrayBuffer(size * (bits / 8))], null)
+        return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [new ArrayBuffer(size * (bits / 8))], null)
       };
-    }, $Buffer_initialize$3.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$length', $Buffer_length$4 = function $$length() {
+    $def(self, '$length', function $$length() {
       var self = this;
 
       return self["native"].byteLength
-    }, $Buffer_length$4.$$arity = 0);
-    $alias(self, "size", "length");
+    }, 0);
     
-    Opal.def(self, '$to_a', $Buffer_to_a$5 = function $$to_a(bits, type) {
+    $def(self, '$to_a', function $$to_a(bits, type) {
       var self = this;
 
       
       
-      if (bits == null) {
-        bits = 8;
-      };
+      if (bits == null) bits = 8;;
       
-      if (type == null) {
-        type = "unsigned";
-      };
-      return $$($nesting, 'Array').$new(self, bits, type);
-    }, $Buffer_to_a$5.$$arity = -1);
-    return (Opal.def(self, '$view', $Buffer_view$6 = function $$view(offset, length) {
+      if (type == null) type = "unsigned";;
+      return $$('Array').$new(self, bits, type);
+    }, -1);
+    
+    $def(self, '$view', function $$view(offset, length) {
       var self = this;
 
       
       
-      if (offset == null) {
-        offset = nil;
-      };
+      if (offset == null) offset = nil;;
       
-      if (length == null) {
-        length = nil;
-      };
-      return $$($nesting, 'View').$new(self, offset, length);
-    }, $Buffer_view$6.$$arity = -1), nil) && 'view';
+      if (length == null) length = nil;;
+      return $$('View').$new(self, offset, length);
+    }, -1);
+    
+    $def(self, '$to_s', function $$to_s() {
+      var self = this;
+
+      return self.$to_a().$to_a().$pack("c*")
+    }, 0);
+    return $alias(self, "size", "length");
   })($nesting[0], null, $nesting);
 };
diff --git a/opal/master/buffer.min.js b/opal/master/buffer.min.js
index 4c85a381..93d0c760 100644
--- a/opal/master/buffer.min.js
+++ b/opal/master/buffer.min.js
@@ -1 +1 @@
-Opal.modules.native=function(Opal){function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}var $base,$Object_inspect$42,$Object_class$40,$Object_each$30,$Object_method_missing$36,$Object_to_a$41,self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$truthy=Opal.truthy,$send=Opal.send,$hash2=Opal.hash2,$range=Opal.range,$alias=Opal.alias,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$gvars=Opal.gvars;return Opal.add_stubs(["$try_convert","$native?","$respond_to?","$to_n","$raise","$inspect","$Native","$proc","$map!","$end_with?","$define_method","$[]","$convert","$call","$to_proc","$new","$each","$native_reader","$native_writer","$extend","$warn","$include","$is_a?","$map","$to_a","$_Array","$method_missing","$bind","$instance_method","$slice","$-","$length","$[]=","$enum_for","$===","$>=","$<<","$each_pair","$_initialize","$name","$native_module"]),function($Native_included$22,$Native_convert$3){var $Native_call$4,$Native_proc$5,$nesting=[$Native_included$22=$module($Native_included$22,"Native")].concat($Native_convert$3);Opal.defs($Native_included$22,"$is_a?",$Native_convert$3=function(object,klass){try{return object instanceof this.$try_convert(klass)}catch(e){return!1}},$Native_convert$3.$$arity=2),Opal.defs($Native_included$22,"$try_convert",$Native_convert$3=function(value,default$){return null==default$&&(default$=nil),this["$native?"](value)?value:value["$respond_to?"]("to_n")?value.$to_n():default$},$Native_convert$3.$$arity=-2),Opal.defs($Native_included$22,"$convert",$Native_convert$3=function(value){return this["$native?"](value)?value:value["$respond_to?"]("to_n")?value.$to_n():void this.$raise($$($nesting,"ArgumentError"),value.$inspect()+" isn't native")},$Native_convert$3.$$arity=1),Opal.defs($Native_included$22,"$call",$Native_call$4=function(obj,key,$a){var args,prop=$Native_call$4.$$p,block=prop||nil;prop&&($Native_call$4.$$p=null),prop&&($Native_call$4.$$p=null),args=Opal.slice.call(arguments,2,arguments.length);prop=obj[key];if(prop instanceof Function){for(var converted=new Array(args.length),i=0,l=args.length;i<l;i++){var item=args[i],conv=this.$try_convert(item);converted[i]=conv===nil?item:conv}return block!==nil&&converted.push(block),this.$Native(prop.apply(obj,converted))}return this.$Native(prop)},$Native_call$4.$$arity=-3),Opal.defs($Native_included$22,"$proc",$Native_proc$5=function(){var $$6,$iter=$Native_proc$5.$$p,block=$iter||nil;return $iter&&($Native_proc$5.$$p=null),$iter&&($Native_proc$5.$$p=null),$truthy(block)||this.$raise($$($nesting,"LocalJumpError"),"no block given"),$send($$$("::","Kernel"),"proc",[],(($$6=function($a){var $$7,instance,self_=null==$$6.$$s?this:$$6.$$s,args=Opal.slice.call(arguments,0,arguments.length);if($send(args,"map!",[],(($$7=function(arg){var self=null==$$7.$$s?this:$$7.$$s;return null==arg&&(arg=nil),self.$Native(arg)}).$$s=self_,$$7.$$arity=1,$$7)),instance=self_.$Native(this),this===Opal.global)return block.apply(self_,args);self_=block.$$s;block.$$s=null;try{return block.apply(instance,args)}finally{block.$$s=self_}}).$$s=this,$$6.$$arity=-1,$$6))},$Native_proc$5.$$arity=0),function($Helpers_native_accessor$18,$Helpers_native_writer$15){var $Helpers_alias_native$8,$nesting=[$Helpers_native_accessor$18=$module($Helpers_native_accessor$18,"Helpers")].concat($Helpers_native_writer$15);Opal.def($Helpers_native_accessor$18,"$alias_native",$Helpers_alias_native$8=function(new$,$a,$b){var $post_args,old,as,$$9,$$10,$$11,$kwargs=$Helpers_alias_native$8.$$p;if($kwargs&&($Helpers_alias_native$8.$$p=null),$post_args=Opal.slice.call(arguments,1,arguments.length),null==($kwargs=Opal.extract_kwargs($post_args)))$kwargs=$hash2([],{});else if(!$kwargs.$$is_hash)throw Opal.ArgumentError.$new("expected kwargs");return 0<$post_args.length&&(old=$post_args[0],$post_args.splice(0,1)),null==old&&(old=new$),null==(as=$kwargs.$$smap.as)&&(as=nil),$truthy(old["$end_with?"]("="))?$send(this,"define_method",[new$],(($$9=function(value){var self=null==$$9.$$s?this:$$9.$$s;return null==self.native&&(self.native=nil),null==value&&(value=nil),self.native[old["$[]"]($range(0,-2,!1))]=$$($nesting,"Native").$convert(value),value}).$$s=this,$$9.$$arity=1,$$9)):$truthy(as)?$send(this,"define_method",[new$],(($$10=function($c){var self=null==$$10.$$s?this:$$10.$$s,args=$$10.$$p,block=args||nil,value=nil;return null==self.native&&(self.native=nil),args&&($$10.$$p=null),args=Opal.slice.call(arguments,0,arguments.length),value=$send($$($nesting,"Native"),"call",[self.native,old].concat(Opal.to_a(args)),block.$to_proc()),$truthy(value)?as.$new(value.$to_n()):nil}).$$s=this,$$10.$$arity=-1,$$10)):$send(this,"define_method",[new$],(($$11=function($c){var self=null==$$11.$$s?this:$$11.$$s,args=$$11.$$p,block=args||nil;return null==self.native&&(self.native=nil),args&&($$11.$$p=null),args=Opal.slice.call(arguments,0,arguments.length),$send($$($nesting,"Native"),"call",[self.native,old].concat(Opal.to_a(args)),block.$to_proc())}).$$s=this,$$11.$$arity=-1,$$11))},$Helpers_alias_native$8.$$arity=-2),Opal.def($Helpers_native_accessor$18,"$native_reader",$Helpers_native_writer$15=function($a){var $$13,$post_args=Opal.slice.call(arguments,0,arguments.length);return $send($post_args,"each",[],(($$13=function(name){var $$14,self=null==$$13.$$s?this:$$13.$$s;return null==name&&(name=nil),$send(self,"define_method",[name],(($$14=function(){var self=null==$$14.$$s?this:$$14.$$s;return null==self.native&&(self.native=nil),self.$Native(self.native[name])}).$$s=self,$$14.$$arity=0,$$14))}).$$s=this,$$13.$$arity=1,$$13))},$Helpers_native_writer$15.$$arity=-1),Opal.def($Helpers_native_accessor$18,"$native_writer",$Helpers_native_writer$15=function($a){var $$16,$post_args=Opal.slice.call(arguments,0,arguments.length);return $send($post_args,"each",[],(($$16=function(name){var $$17,self=null==$$16.$$s?this:$$16.$$s;return null==name&&(name=nil),$send(self,"define_method",[name+"="],(($$17=function(value){var self=null==$$17.$$s?this:$$17.$$s;return null==self.native&&(self.native=nil),null==value&&(value=nil),self.$Native(self.native[name]=value)}).$$s=self,$$17.$$arity=1,$$17))}).$$s=this,$$16.$$arity=1,$$16))},$Helpers_native_writer$15.$$arity=-1),Opal.def($Helpers_native_accessor$18,"$native_accessor",$Helpers_native_accessor$18=function($a){var names=Opal.slice.call(arguments,0,arguments.length);return $send(this,"native_reader",Opal.to_a(names)),$send(this,"native_writer",Opal.to_a(names))},$Helpers_native_accessor$18.$$arity=-1)}($nesting[0],$nesting),function($Wrapper_included$21,$Wrapper_to_n$20){var $nesting=[$Wrapper_included$21=$module($Wrapper_included$21,"Wrapper")].concat($Wrapper_to_n$20);Opal.def($Wrapper_included$21,"$initialize",$Wrapper_to_n$20=function(native$){return $truthy($$$("::","Kernel")["$native?"](native$))||$$$("::","Kernel").$raise($$($nesting,"ArgumentError"),native$.$inspect()+" isn't native"),this.native=native$},$Wrapper_to_n$20.$$arity=1),Opal.def($Wrapper_included$21,"$to_n",$Wrapper_to_n$20=function(){return null==this.native&&(this.native=nil),this.native},$Wrapper_to_n$20.$$arity=0),Opal.defs($Wrapper_included$21,"$included",$Wrapper_included$21=function(klass){return klass.$extend($$($nesting,"Helpers"))},$Wrapper_included$21.$$arity=1)}($nesting[0],$nesting),Opal.defs($Native_included$22,"$included",$Native_included$22=function(base){return this.$warn("Including ::Native is deprecated. Please include Native::Wrapper instead."),base.$include($$($nesting,"Wrapper"))},$Native_included$22.$$arity=1)}($nesting[0],$nesting),function(self,$Kernel_native$ques$23){var $Kernel_Native$24,$Kernel_Array$27,$nesting=[self=$module(self,"Kernel")].concat($Kernel_native$ques$23);Opal.def(self,"$native?",$Kernel_native$ques$23=function(value){return null==value||!value.$$class},$Kernel_native$ques$23.$$arity=1),Opal.def(self,"$Native",$Kernel_Native$24=function(obj){var $$25,$$26,$iter=$Kernel_Native$24.$$p;return $iter&&($Kernel_Native$24.$$p=null),$truthy(null==obj)?nil:$truthy(this["$native?"](obj))?$$$($$($nesting,"Native"),"Object").$new(obj):$truthy(obj["$is_a?"]($$($nesting,"Array")))?$send(obj,"map",[],(($$25=function(o){var self=null==$$25.$$s?this:$$25.$$s;return null==o&&(o=nil),self.$Native(o)}).$$s=this,$$25.$$arity=1,$$25)):$truthy(obj["$is_a?"]($$($nesting,"Proc")))?$send(this,"proc",[],(($$26=function($a){var self=null==$$26.$$s?this:$$26.$$s,$post_args=$$26.$$p,block=$post_args||nil;return $post_args&&($$26.$$p=null),$post_args=Opal.slice.call(arguments,0,arguments.length),self.$Native($send(obj,"call",Opal.to_a($post_args),block.$to_proc()))}).$$s=this,$$26.$$arity=-1,$$26)):obj},$Kernel_Native$24.$$arity=1),$alias(self,"_Array","Array"),Opal.def(self,"$Array",$Kernel_Array$27=function(object,$a){var args=$Kernel_Array$27.$$p,block=args||nil;return args&&($Kernel_Array$27.$$p=null),args&&($Kernel_Array$27.$$p=null),args=Opal.slice.call(arguments,1,arguments.length),$truthy(this["$native?"](object))?$send($$$($$($nesting,"Native"),"Array"),"new",[object].concat(Opal.to_a(args)),block.$to_proc()).$to_a():this.$_Array(object)},$Kernel_Array$27.$$arity=-2)}($nesting[0],$nesting),$base=$$($nesting,"Native"),$Object_inspect$42=$$($nesting,"BasicObject"),$Object_class$40=$nesting,[$Object_inspect$42=$klass($base,$Object_inspect$42,"Object")].concat($Object_class$40),$Object_inspect$42.$$prototype.native=nil,$Object_inspect$42.$include($$$($$$("::","Native"),"Wrapper")),Opal.def($Object_inspect$42,"$==",$Object_class$40=function(other){return this.native===$$$("::","Native").$try_convert(other)},$Object_class$40.$$arity=1),Opal.def($Object_inspect$42,"$has_key?",$Object_class$40=function(name){return Opal.hasOwnProperty.call(this.native,name)},$Object_class$40.$$arity=1),$alias($Object_inspect$42,"key?","has_key?"),$alias($Object_inspect$42,"include?","has_key?"),$alias($Object_inspect$42,"member?","has_key?"),Opal.def($Object_inspect$42,"$each",$Object_each$30=function($a){var key,$post_args=$Object_each$30.$$p,$yield=$post_args||nil;if($post_args&&($Object_each$30.$$p=null),$post_args=Opal.slice.call(arguments,0,arguments.length),$yield===nil)return $send(this,"method_missing",["each"].concat(Opal.to_a($post_args)));for(key in this.native)Opal.yieldX($yield,[key,this.native[key]]);return this},$Object_each$30.$$arity=-1),Opal.def($Object_inspect$42,"$[]",$Object_class$40=function(key){var prop=this.native[key];return prop instanceof Function?prop:$$$("::","Native").$call(this.native,key)},$Object_class$40.$$arity=1),Opal.def($Object_inspect$42,"$[]=",$Object_class$40=function(key,value){var native$=$$$("::","Native").$try_convert(value);return $truthy(native$===nil)?this.native[key]=value:this.native[key]=native$},$Object_class$40.$$arity=2),Opal.def($Object_inspect$42,"$merge!",$Object_class$40=function(other){for(var prop in other=$$$("::","Native").$convert(other))this.native[prop]=other[prop];return this},$Object_class$40.$$arity=1),Opal.def($Object_inspect$42,"$respond_to?",$Object_class$40=function(name,include_all){return null==include_all&&(include_all=!1),$$$("::","Kernel").$instance_method("respond_to?").$bind(this).$call(name,include_all)},$Object_class$40.$$arity=-2),Opal.def($Object_inspect$42,"$respond_to_missing?",$Object_class$40=function(name,include_all){return null==include_all&&(include_all=!1),Opal.hasOwnProperty.call(this.native,name)},$Object_class$40.$$arity=-2),Opal.def($Object_inspect$42,"$method_missing",$Object_method_missing$36=function(mid,$a){var $writer,args=$Object_method_missing$36.$$p,block=args||nil;return 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null==$gvars.$&&($gvars.$=nil),$gvars.$["$[]"]($$("Buffer").$name_for(bits,type)+"Array")}),2),self.$include($$("Enumerable")),self.$attr_reader("buffer","type"),$def(self,"$initialize",(function $$initialize(buffer,bits,type){if(delete $$initialize.$$p,null==bits&&(bits=nil),null==type&&(type=nil),$eqeq($$("Native"),buffer))$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[buffer],null);else{var klass=$$("Array").$for(bits,type);$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[new klass(buffer.$to_n())],null)}return this.buffer=buffer,this.type=type}),-2),$def(self,"$bits",(function(){return 8*this.native.BYTES_PER_ELEMENT}),0),$def(self,"$[]",(function(index,offset){return null==offset&&(offset=nil),$truthy(offset)?this.native.subarray(index,offset):this.native[index]}),-2),$def(self,"$[]=",(function(index,value){return this.native[index]=value}),2),$def(self,"$bytesize",(function(){return this.native.byteLength}),0),$def(self,"$each",(function $$each(){var $yield=$$each.$$p||nil;if(delete $$each.$$p,$yield===nil)return this.$enum_for("each");for(var i=0,length=this.native.length;i<length;i++)Opal.yield1($yield,this.native[i]);return this}),0),$def(self,"$length",(function(){return this.native.length}),0),$def(self,"$merge!",(function(other,offset){return this.native.set(other.$to_n(),offset)}),-2),$alias(self,"size","length")}($nesting[0],0,$nesting)}($nesting[0],0,$nesting)},Opal.modules["buffer/view"]=function(Opal){var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$klass=Opal.klass,$gvars=Opal.gvars,$defs=Opal.defs,$truthy=Opal.truthy,$send2=Opal.send2,$find_super=Opal.find_super,$def=Opal.def,$alias=Opal.alias;return Opal.add_stubs("include,!,nil?,[],attr_reader,native?,to_n,name_for"),function($base,$super,$parent_nesting){var $nesting=[$klass($base,null,"Buffer")].concat($parent_nesting);return function($base,$super,$parent_nesting){var self=$klass($base,null,"View"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return self.$$prototype.native=nil,self.$include($$$($$("Native"),"Wrapper")),$defs(self,"$supported?",(function(){return null==$gvars.$&&($gvars.$=nil),$gvars.$["$[]"]("DataView")["$nil?"]()["$!"]()}),0),self.$attr_reader("buffer","offset"),$def(self,"$initialize",(function $$initialize(buffer,offset,length){return delete $$initialize.$$p,null==offset&&(offset=nil),null==length&&(length=nil),$truthy(this["$native?"](buffer))?$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[buffer],null):$truthy(offset)&&$truthy(length)?$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[new DataView(buffer.$to_n(),offset.$to_n(),length.$to_n())],null):$truthy(offset)?$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[new DataView(buffer.$to_n(),offset.$to_n())],null):$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[new DataView(buffer.$to_n())],null),this.buffer=buffer,this.offset=offset}),-2),$def(self,"$length",(function(){return this.native.byteLength}),0),$def(self,"$get",(function(offset,bits,type,little){return null==bits&&(bits=8),null==type&&(type="unsigned"),null==little&&(little=!1),this.native["get"+$$("Buffer").$name_for(bits,type)](offset,little)}),-2),$alias(self,"[]","get"),$def(self,"$set",(function(offset,value,bits,type,little){return null==bits&&(bits=8),null==type&&(type="unsigned"),null==little&&(little=!1),this.native["set"+$$("Buffer").$name_for(bits,type)](offset,value,little)}),-3),$alias(self,"[]=","set"),$def(self,"$get_int8",(function(offset,little){return null==little&&(little=!1),this.native.getInt8(offset,little)}),-2),$def(self,"$set_int8",(function(offset,value,little){return null==little&&(little=!1),this.native.setInt8(offset,value,little)}),-3),$def(self,"$get_uint8",(function(offset,little){return null==little&&(little=!1),this.native.getUint8(offset,little)}),-2),$def(self,"$set_uint8",(function(offset,value,little){return null==little&&(little=!1),this.native.setUint8(offset,value,little)}),-3),$def(self,"$get_int16",(function(offset,little){return null==little&&(little=!1),this.native.getInt16(offset,little)}),-2),$def(self,"$set_int16",(function(offset,value,little){return null==little&&(little=!1),this.native.setInt16(offset,value,little)}),-3),$def(self,"$get_uint16",(function(offset,little){return null==little&&(little=!1),this.native.getUint16(offset,little)}),-2),$def(self,"$set_uint16",(function(offset,value,little){return null==little&&(little=!1),this.native.setUint16(offset,value,little)}),-3),$def(self,"$get_int32",(function(offset,little){return null==little&&(little=!1),this.native.getInt32(offset,little)}),-2),$def(self,"$set_int32",(function(offset,value,little){return null==little&&(little=!1),this.native.setInt32(offset,value,little)}),-3),$def(self,"$get_uint32",(function(offset,little){return null==little&&(little=!1),this.native.getUint32(offset,little)}),-2),$def(self,"$set_uint32",(function(offset,value,little){return null==little&&(little=!1),this.native.setUint32(offset,value,little)}),-3),$def(self,"$get_float32",(function(offset,little){return null==little&&(little=!1),this.native.getFloat32(offset,little)}),-2),$def(self,"$set_float32",(function(offset,value,little){return null==little&&(little=!1),this.native.setFloat32(offset,value,little)}),-3),$def(self,"$get_float64",(function(offset,little){return null==little&&(little=!1),this.native.getFloat64(offset,little)}),-2),$def(self,"$set_float64",(function(offset,value,little){return null==little&&(little=!1),this.native.setFloat64(offset,value,little)}),-3),$alias(self,"size","length")}($nesting[0],0,$nesting)}($nesting[0],0,$nesting)},Opal.modules.buffer=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$klass=Opal.klass,$gvars=Opal.gvars,$defs=Opal.defs,$eqeqeq=Opal.eqeqeq,$truthy=Opal.truthy,$send2=Opal.send2,$find_super=Opal.find_super,$def=Opal.def,$alias=Opal.alias;return Opal.add_stubs("require,include,!,nil?,[],===,native?,new,pack,to_a"),self.$require("native"),self.$require("buffer/array"),self.$require("buffer/view"),function($base,$super,$parent_nesting){var self=$klass($base,null,"Buffer"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return self.$$prototype.native=nil,self.$include($$$($$("Native"),"Wrapper")),$defs(self,"$supported?",(function(){return null==$gvars.$&&($gvars.$=nil),$gvars.$["$[]"]("ArrayBuffer")["$nil?"]()["$!"]()}),0),$defs(self,"$name_for",(function(bits,type){var $ret_or_1;return""+($eqeqeq("unsigned",$ret_or_1=type)?"Uint":$eqeqeq("signed",$ret_or_1)?"Int":$eqeqeq("float",$ret_or_1)?"Float":nil)+bits}),2),$def(self,"$initialize",(function $$initialize(size,bits){return delete $$initialize.$$p,null==bits&&(bits=8),$truthy(this["$native?"](size))?$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[size],null):$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[new ArrayBuffer(size*(bits/8))],null)}),-2),$def(self,"$length",(function(){return this.native.byteLength}),0),$def(self,"$to_a",(function(bits,type){return null==bits&&(bits=8),null==type&&(type="unsigned"),$$("Array").$new(this,bits,type)}),-1),$def(self,"$view",(function(offset,length){return null==offset&&(offset=nil),null==length&&(length=nil),$$("View").$new(this,offset,length)}),-1),$def(self,"$to_s",(function(){return this.$to_a().$to_a().$pack("c*")}),0),$alias(self,"size","length")}($nesting[0],0,$nesting)};
diff --git a/opal/master/buffer.min.js.gz b/opal/master/buffer.min.js.gz
index ac7c3b67..e78af562 100644
Binary files a/opal/master/buffer.min.js.gz and b/opal/master/buffer.min.js.gz differ
diff --git a/opal/master/console.js b/opal/master/console.js
index a96b9a96..e28d4b41 100644
--- a/opal/master/console.js
+++ b/opal/master/console.js
@@ -1,22 +1,15 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["native"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_ge(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs >= rhs : lhs['$>='](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $truthy = Opal.truthy, $send = Opal.send, $hash2 = Opal.hash2, $range = Opal.range, $alias = Opal.alias, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $gvars = Opal.gvars;
-
-  Opal.add_stubs(['$try_convert', '$native?', '$respond_to?', '$to_n', '$raise', '$inspect', '$Native', '$proc', '$map!', '$end_with?', '$define_method', '$[]', '$convert', '$call', '$to_proc', '$new', '$each', '$native_reader', '$native_writer', '$extend', '$warn', '$include', '$is_a?', '$map', '$to_a', '$_Array', '$method_missing', '$bind', '$instance_method', '$slice', '$-', '$length', '$[]=', '$enum_for', '$===', '$>=', '$<<', '$each_pair', '$_initialize', '$name', '$native_module']);
+Opal.modules["native"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $defs = Opal.defs, $truthy = Opal.truthy, $send = Opal.send, $Kernel = Opal.Kernel, $hash2 = Opal.hash2, $range = Opal.range, $to_a = Opal.to_a, $def = Opal.def, $alias = Opal.alias, $klass = Opal.klass, $rb_minus = Opal.rb_minus, $send2 = Opal.send2, $find_super = Opal.find_super, $eqeqeq = Opal.eqeqeq, $rb_ge = Opal.rb_ge, $gvars = Opal.gvars;
+
+  Opal.add_stubs('try_convert,native?,respond_to?,to_n,raise,inspect,Native,proc,map!,end_with?,define_method,[],convert,call,to_proc,new,each,native_reader,native_writer,extend,warn,include,is_a?,map,to_a,_Array,method_missing,bind,instance_method,slice,-,length,[]=,enum_for,===,>=,<<,each_pair,method_defined?,_initialize,name,native_module');
   
   (function($base, $parent_nesting) {
     var self = $module($base, 'Native');
 
-    var $nesting = [self].concat($parent_nesting), $Native_is_a$ques$1, $Native_try_convert$2, $Native_convert$3, $Native_call$4, $Native_proc$5, $Native_included$22;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
-    Opal.defs(self, '$is_a?', $Native_is_a$ques$1 = function(object, klass) {
+    $defs(self, '$is_a?', function $Native_is_a$ques$1(object, klass) {
       var self = this;
 
       
@@ -27,15 +20,13 @@ Opal.modules["native"] = function(Opal) {
         return false;
       }
     
-    }, $Native_is_a$ques$1.$$arity = 2);
-    Opal.defs(self, '$try_convert', $Native_try_convert$2 = function $$try_convert(value, default$) {
+    }, 2);
+    $defs(self, '$try_convert', function $$try_convert(value, default$) {
       var self = this;
 
       
       
-      if (default$ == null) {
-        default$ = nil;
-      };
+      if (default$ == null) default$ = nil;;
       
       if (self['$native?'](value)) {
         return value;
@@ -47,8 +38,8 @@ Opal.modules["native"] = function(Opal) {
         return default$;
       }
     ;
-    }, $Native_try_convert$2.$$arity = -2);
-    Opal.defs(self, '$convert', $Native_convert$3 = function $$convert(value) {
+    }, -2);
+    $defs(self, '$convert', function $$convert(value) {
       var self = this;
 
       
@@ -59,19 +50,18 @@ Opal.modules["native"] = function(Opal) {
         return value.$to_n();
       }
       else {
-        self.$raise($$($nesting, 'ArgumentError'), "" + (value.$inspect()) + " isn't native");
+        self.$raise($$('ArgumentError'), "" + (value.$inspect()) + " isn't native");
       }
     
-    }, $Native_convert$3.$$arity = 1);
-    Opal.defs(self, '$call', $Native_call$4 = function $$call(obj, key, $a) {
-      var $iter = $Native_call$4.$$p, block = $iter || nil, $post_args, args, self = this;
+    }, 1);
+    $defs(self, '$call', function $$call(obj, key, $a) {
+      var block = $$call.$$p || nil, $post_args, args, self = this;
 
-      if ($iter) $Native_call$4.$$p = null;
-      
+      delete $$call.$$p;
       
-      if ($iter) $Native_call$4.$$p = null;;
+      ;
       
-      $post_args = Opal.slice.call(arguments, 2, arguments.length);
+      $post_args = Opal.slice.call(arguments, 2);
       
       args = $post_args;;
       
@@ -97,33 +87,29 @@ Opal.modules["native"] = function(Opal) {
         return self.$Native(prop);
       }
     ;
-    }, $Native_call$4.$$arity = -3);
-    Opal.defs(self, '$proc', $Native_proc$5 = function $$proc() {
-      var $iter = $Native_proc$5.$$p, block = $iter || nil, $$6, self = this;
+    }, -3);
+    $defs(self, '$proc', function $$proc() {
+      var block = $$proc.$$p || nil, self = this;
 
-      if ($iter) $Native_proc$5.$$p = null;
-      
+      delete $$proc.$$p;
       
-      if ($iter) $Native_proc$5.$$p = null;;
-      if ($truthy(block)) {
-      } else {
-        self.$raise($$($nesting, 'LocalJumpError'), "no block given")
+      ;
+      if (!$truthy(block)) {
+        self.$raise($$('LocalJumpError'), "no block given")
       };
-      return $send($$$('::', 'Kernel'), 'proc', [], ($$6 = function($a){var self = $$6.$$s == null ? this : $$6.$$s, $post_args, args, $$7, instance = nil;
+      return $send($Kernel, 'proc', [], function $$2($a){var $post_args, args, self = $$2.$$s == null ? this : $$2.$$s, instance = nil;
 
         
         
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
+        $post_args = Opal.slice.call(arguments);
         
         args = $post_args;;
-        $send(args, 'map!', [], ($$7 = function(arg){var self = $$7.$$s == null ? this : $$7.$$s;
+        $send(args, 'map!', [], function $$3(arg){var self = $$3.$$s == null ? this : $$3.$$s;
 
           
           
-          if (arg == null) {
-            arg = nil;
-          };
-          return self.$Native(arg);}, $$7.$$s = self, $$7.$$arity = 1, $$7));
+          if (arg == null) arg = nil;;
+          return self.$Native(arg);}, {$$arity: 1, $$s: self});
         instance = self.$Native(this);
         
         // if global is current scope, run the block in the scope it was defined
@@ -140,22 +126,22 @@ Opal.modules["native"] = function(Opal) {
         finally {
           block.$$s = self_;
         }
-      ;}, $$6.$$s = self, $$6.$$arity = -1, $$6));
-    }, $Native_proc$5.$$arity = 0);
+      ;}, {$$arity: -1, $$s: self});
+    }, 0);
     (function($base, $parent_nesting) {
       var self = $module($base, 'Helpers');
 
-      var $nesting = [self].concat($parent_nesting), $Helpers_alias_native$8, $Helpers_native_reader$12, $Helpers_native_writer$15, $Helpers_native_accessor$18;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
       
-      Opal.def(self, '$alias_native', $Helpers_alias_native$8 = function $$alias_native(new$, $a, $b) {
-        var $post_args, $kwargs, old, as, $$9, $$10, $$11, $iter = $Helpers_alias_native$8.$$p, $yield = $iter || nil, self = this;
+      $def(self, '$alias_native', function $$alias_native(new$, $a, $b) {
+        var $post_args, $kwargs, old, as, $yield = $$alias_native.$$p || nil, self = this;
 
-        if ($iter) $Helpers_alias_native$8.$$p = null;
+        delete $$alias_native.$$p;
         
         
-        $post_args = Opal.slice.call(arguments, 1, arguments.length);
+        $post_args = Opal.slice.call(arguments, 1);
         
         $kwargs = Opal.extract_kwargs($post_args);
         
@@ -165,250 +151,227 @@ Opal.modules["native"] = function(Opal) {
           throw Opal.ArgumentError.$new('expected kwargs');
         };
         
-        if ($post_args.length > 0) {
-          old = $post_args[0];
-          $post_args.splice(0, 1);
-        }
-        if (old == null) {
-          old = new$;
-        };
+        if ($post_args.length > 0) old = $post_args.shift();
+        if (old == null) old = new$;;
         
         as = $kwargs.$$smap["as"];
-        if (as == null) {
-          as = nil
-        };
+        if (as == null) as = nil;
         if ($truthy(old['$end_with?']("="))) {
-          return $send(self, 'define_method', [new$], ($$9 = function(value){var self = $$9.$$s == null ? this : $$9.$$s;
+          return $send(self, 'define_method', [new$], function $$4(value){var self = $$4.$$s == null ? this : $$4.$$s;
             if (self["native"] == null) self["native"] = nil;
 
             
             
-            if (value == null) {
-              value = nil;
-            };
-            self["native"][old['$[]']($range(0, -2, false))] = $$($nesting, 'Native').$convert(value);
-            return value;}, $$9.$$s = self, $$9.$$arity = 1, $$9))
+            if (value == null) value = nil;;
+            self["native"][old['$[]']($range(0, -2, false))] = $$('Native').$convert(value);
+            return value;}, {$$arity: 1, $$s: self})
         } else if ($truthy(as)) {
-          return $send(self, 'define_method', [new$], ($$10 = function($c){var self = $$10.$$s == null ? this : $$10.$$s, $iter = $$10.$$p, block = $iter || nil, $post_args, args, value = nil;
+          return $send(self, 'define_method', [new$], function $$5($c){var block = $$5.$$p || nil, $post_args, args, self = $$5.$$s == null ? this : $$5.$$s, value = nil;
             if (self["native"] == null) self["native"] = nil;
 
+            delete $$5.$$p;
             
+            ;
             
-            if ($iter) $$10.$$p = null;;
-            
-            $post_args = Opal.slice.call(arguments, 0, arguments.length);
+            $post_args = Opal.slice.call(arguments);
             
             args = $post_args;;
-            value = $send($$($nesting, 'Native'), 'call', [self["native"], old].concat(Opal.to_a(args)), block.$to_proc());
+            value = $send($$('Native'), 'call', [self["native"], old].concat($to_a(args)), block.$to_proc());
             if ($truthy(value)) {
               return as.$new(value.$to_n())
             } else {
               return nil
-            };}, $$10.$$s = self, $$10.$$arity = -1, $$10))
+            };}, {$$arity: -1, $$s: self})
         } else {
-          return $send(self, 'define_method', [new$], ($$11 = function($c){var self = $$11.$$s == null ? this : $$11.$$s, $iter = $$11.$$p, block = $iter || nil, $post_args, args;
+          return $send(self, 'define_method', [new$], function $$6($c){var block = $$6.$$p || nil, $post_args, args, self = $$6.$$s == null ? this : $$6.$$s;
             if (self["native"] == null) self["native"] = nil;
 
+            delete $$6.$$p;
             
+            ;
             
-            if ($iter) $$11.$$p = null;;
-            
-            $post_args = Opal.slice.call(arguments, 0, arguments.length);
+            $post_args = Opal.slice.call(arguments);
             
             args = $post_args;;
-            return $send($$($nesting, 'Native'), 'call', [self["native"], old].concat(Opal.to_a(args)), block.$to_proc());}, $$11.$$s = self, $$11.$$arity = -1, $$11))
+            return $send($$('Native'), 'call', [self["native"], old].concat($to_a(args)), block.$to_proc());}, {$$arity: -1, $$s: self})
         };
-      }, $Helpers_alias_native$8.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$native_reader', $Helpers_native_reader$12 = function $$native_reader($a) {
-        var $post_args, names, $$13, self = this;
+      $def(self, '$native_reader', function $$native_reader($a) {
+        var $post_args, names, self = this;
 
         
         
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
+        $post_args = Opal.slice.call(arguments);
         
         names = $post_args;;
-        return $send(names, 'each', [], ($$13 = function(name){var self = $$13.$$s == null ? this : $$13.$$s, $$14;
+        return $send(names, 'each', [], function $$7(name){var self = $$7.$$s == null ? this : $$7.$$s;
 
           
           
-          if (name == null) {
-            name = nil;
-          };
-          return $send(self, 'define_method', [name], ($$14 = function(){var self = $$14.$$s == null ? this : $$14.$$s;
+          if (name == null) name = nil;;
+          return $send(self, 'define_method', [name], function $$8(){var self = $$8.$$s == null ? this : $$8.$$s;
             if (self["native"] == null) self["native"] = nil;
 
-            return self.$Native(self["native"][name])}, $$14.$$s = self, $$14.$$arity = 0, $$14));}, $$13.$$s = self, $$13.$$arity = 1, $$13));
-      }, $Helpers_native_reader$12.$$arity = -1);
+            return self.$Native(self["native"][name])}, {$$arity: 0, $$s: self});}, {$$arity: 1, $$s: self});
+      }, -1);
       
-      Opal.def(self, '$native_writer', $Helpers_native_writer$15 = function $$native_writer($a) {
-        var $post_args, names, $$16, self = this;
+      $def(self, '$native_writer', function $$native_writer($a) {
+        var $post_args, names, self = this;
 
         
         
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
+        $post_args = Opal.slice.call(arguments);
         
         names = $post_args;;
-        return $send(names, 'each', [], ($$16 = function(name){var self = $$16.$$s == null ? this : $$16.$$s, $$17;
+        return $send(names, 'each', [], function $$9(name){var self = $$9.$$s == null ? this : $$9.$$s;
 
           
           
-          if (name == null) {
-            name = nil;
-          };
-          return $send(self, 'define_method', ["" + (name) + "="], ($$17 = function(value){var self = $$17.$$s == null ? this : $$17.$$s;
+          if (name == null) name = nil;;
+          return $send(self, 'define_method', ["" + (name) + "="], function $$10(value){var self = $$10.$$s == null ? this : $$10.$$s;
             if (self["native"] == null) self["native"] = nil;
 
             
             
-            if (value == null) {
-              value = nil;
-            };
-            return self.$Native(self["native"][name] = value);}, $$17.$$s = self, $$17.$$arity = 1, $$17));}, $$16.$$s = self, $$16.$$arity = 1, $$16));
-      }, $Helpers_native_writer$15.$$arity = -1);
-      return (Opal.def(self, '$native_accessor', $Helpers_native_accessor$18 = function $$native_accessor($a) {
+            if (value == null) value = nil;;
+            return self.$Native(self["native"][name] = value);}, {$$arity: 1, $$s: self});}, {$$arity: 1, $$s: self});
+      }, -1);
+      return $def(self, '$native_accessor', function $$native_accessor($a) {
         var $post_args, names, self = this;
 
         
         
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
+        $post_args = Opal.slice.call(arguments);
         
         names = $post_args;;
-        $send(self, 'native_reader', Opal.to_a(names));
-        return $send(self, 'native_writer', Opal.to_a(names));
-      }, $Helpers_native_accessor$18.$$arity = -1), nil) && 'native_accessor';
+        $send(self, 'native_reader', $to_a(names));
+        return $send(self, 'native_writer', $to_a(names));
+      }, -1);
     })($nesting[0], $nesting);
     (function($base, $parent_nesting) {
       var self = $module($base, 'Wrapper');
 
-      var $nesting = [self].concat($parent_nesting), $Wrapper_initialize$19, $Wrapper_to_n$20, $Wrapper_included$21;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
       
-      Opal.def(self, '$initialize', $Wrapper_initialize$19 = function $$initialize(native$) {
+      $def(self, '$initialize', function $$initialize(native$) {
         var self = this;
 
         
-        if ($truthy($$$('::', 'Kernel')['$native?'](native$))) {
-        } else {
-          $$$('::', 'Kernel').$raise($$($nesting, 'ArgumentError'), "" + (native$.$inspect()) + " isn't native")
+        if (!$truthy($Kernel['$native?'](native$))) {
+          $Kernel.$raise($$('ArgumentError'), "" + (native$.$inspect()) + " isn't native")
         };
         return (self["native"] = native$);
-      }, $Wrapper_initialize$19.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$to_n', $Wrapper_to_n$20 = function $$to_n() {
+      $def(self, '$to_n', function $$to_n() {
         var self = this;
         if (self["native"] == null) self["native"] = nil;
 
         return self["native"]
-      }, $Wrapper_to_n$20.$$arity = 0);
-      return (Opal.defs(self, '$included', $Wrapper_included$21 = function $$included(klass) {
-        var self = this;
-
-        return klass.$extend($$($nesting, 'Helpers'))
-      }, $Wrapper_included$21.$$arity = 1), nil) && 'included';
+      }, 0);
+      return $defs(self, '$included', function $$included(klass) {
+        
+        return klass.$extend($$('Helpers'))
+      }, 1);
     })($nesting[0], $nesting);
-    return (Opal.defs(self, '$included', $Native_included$22 = function $$included(base) {
+    return $defs(self, '$included', function $$included(base) {
       var self = this;
 
       
       self.$warn("Including ::Native is deprecated. Please include Native::Wrapper instead.");
-      return base.$include($$($nesting, 'Wrapper'));
-    }, $Native_included$22.$$arity = 1), nil) && 'included';
+      return base.$include($$('Wrapper'));
+    }, 1);
   })($nesting[0], $nesting);
   (function($base, $parent_nesting) {
     var self = $module($base, 'Kernel');
 
-    var $nesting = [self].concat($parent_nesting), $Kernel_native$ques$23, $Kernel_Native$24, $Kernel_Array$27;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
     
-    Opal.def(self, '$native?', $Kernel_native$ques$23 = function(value) {
-      var self = this;
-
+    $def(self, '$native?', function $Kernel_native$ques$11(value) {
+      
       return value == null || !value.$$class;
-    }, $Kernel_native$ques$23.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$Native', $Kernel_Native$24 = function $$Native(obj) {
-      var $$25, $$26, $iter = $Kernel_Native$24.$$p, $yield = $iter || nil, self = this;
+    $def(self, '$Native', function $$Native(obj) {
+      var $yield = $$Native.$$p || nil, self = this;
 
-      if ($iter) $Kernel_Native$24.$$p = null;
+      delete $$Native.$$p;
       if ($truthy(obj == null)) {
         return nil
       } else if ($truthy(self['$native?'](obj))) {
-        return $$$($$($nesting, 'Native'), 'Object').$new(obj)
-      } else if ($truthy(obj['$is_a?']($$($nesting, 'Array')))) {
-        return $send(obj, 'map', [], ($$25 = function(o){var self = $$25.$$s == null ? this : $$25.$$s;
+        return $$$($$('Native'), 'Object').$new(obj)
+      } else if ($truthy(obj['$is_a?']($$('Array')))) {
+        return $send(obj, 'map', [], function $$12(o){var self = $$12.$$s == null ? this : $$12.$$s;
 
           
           
-          if (o == null) {
-            o = nil;
-          };
-          return self.$Native(o);}, $$25.$$s = self, $$25.$$arity = 1, $$25))
-      } else if ($truthy(obj['$is_a?']($$($nesting, 'Proc')))) {
-        return $send(self, 'proc', [], ($$26 = function($a){var self = $$26.$$s == null ? this : $$26.$$s, $iter = $$26.$$p, block = $iter || nil, $post_args, args;
+          if (o == null) o = nil;;
+          return self.$Native(o);}, {$$arity: 1, $$s: self})
+      } else if ($truthy(obj['$is_a?']($$('Proc')))) {
+        return $send(self, 'proc', [], function $$13($a){var block = $$13.$$p || nil, $post_args, args, self = $$13.$$s == null ? this : $$13.$$s;
 
+          delete $$13.$$p;
           
+          ;
           
-          if ($iter) $$26.$$p = null;;
-          
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
           args = $post_args;;
-          return self.$Native($send(obj, 'call', Opal.to_a(args), block.$to_proc()));}, $$26.$$s = self, $$26.$$arity = -1, $$26))
+          return self.$Native($send(obj, 'call', $to_a(args), block.$to_proc()));}, {$$arity: -1, $$s: self})
       } else {
         return obj
       }
-    }, $Kernel_Native$24.$$arity = 1);
+    }, 1);
     $alias(self, "_Array", "Array");
-    return (Opal.def(self, '$Array', $Kernel_Array$27 = function $$Array(object, $a) {
-      var $iter = $Kernel_Array$27.$$p, block = $iter || nil, $post_args, args, self = this;
+    return $def(self, '$Array', function $$Array(object, $a) {
+      var block = $$Array.$$p || nil, $post_args, args, self = this;
 
-      if ($iter) $Kernel_Array$27.$$p = null;
-      
+      delete $$Array.$$p;
       
-      if ($iter) $Kernel_Array$27.$$p = null;;
+      ;
       
-      $post_args = Opal.slice.call(arguments, 1, arguments.length);
+      $post_args = Opal.slice.call(arguments, 1);
       
       args = $post_args;;
       if ($truthy(self['$native?'](object))) {
-        return $send($$$($$($nesting, 'Native'), 'Array'), 'new', [object].concat(Opal.to_a(args)), block.$to_proc()).$to_a()};
+        return $send($$$($$('Native'), 'Array'), 'new', [object].concat($to_a(args)), block.$to_proc()).$to_a()
+      };
       return self.$_Array(object);
-    }, $Kernel_Array$27.$$arity = -2), nil) && 'Array';
+    }, -2);
   })($nesting[0], $nesting);
-  (function($base, $super, $parent_nesting) {
+  (function($base, $super) {
     var self = $klass($base, $super, 'Object');
 
-    var $nesting = [self].concat($parent_nesting), $Object_$eq_eq$28, $Object_has_key$ques$29, $Object_each$30, $Object_$$$31, $Object_$$$eq$32, $Object_merge$excl$33, $Object_respond_to$ques$34, $Object_respond_to_missing$ques$35, $Object_method_missing$36, $Object_nil$ques$37, $Object_is_a$ques$38, $Object_instance_of$ques$39, $Object_class$40, $Object_to_a$41, $Object_inspect$42;
+    var $proto = self.$$prototype;
 
-    self.$$prototype["native"] = nil;
+    $proto["native"] = nil;
     
-    self.$include($$$($$$('::', 'Native'), 'Wrapper'));
+    self.$include($$$($$$('Native'), 'Wrapper'));
     
-    Opal.def(self, '$==', $Object_$eq_eq$28 = function(other) {
+    $def(self, '$==', function $Object_$eq_eq$14(other) {
       var self = this;
 
-      return self["native"] === $$$('::', 'Native').$try_convert(other)
-    }, $Object_$eq_eq$28.$$arity = 1);
+      return self["native"] === $$$('Native').$try_convert(other)
+    }, 1);
     
-    Opal.def(self, '$has_key?', $Object_has_key$ques$29 = function(name) {
+    $def(self, '$has_key?', function $Object_has_key$ques$15(name) {
       var self = this;
 
       return Opal.hasOwnProperty.call(self["native"], name)
-    }, $Object_has_key$ques$29.$$arity = 1);
-    $alias(self, "key?", "has_key?");
-    $alias(self, "include?", "has_key?");
-    $alias(self, "member?", "has_key?");
+    }, 1);
     
-    Opal.def(self, '$each', $Object_each$30 = function $$each($a) {
-      var $post_args, args, $iter = $Object_each$30.$$p, $yield = $iter || nil, self = this;
+    $def(self, '$each', function $$each($a) {
+      var $post_args, args, $yield = $$each.$$p || nil, self = this;
 
-      if ($iter) $Object_each$30.$$p = null;
+      delete $$each.$$p;
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
       if (($yield !== nil)) {
@@ -420,11 +383,11 @@ Opal.modules["native"] = function(Opal) {
       ;
         return self;
       } else {
-        return $send(self, 'method_missing', ["each"].concat(Opal.to_a(args)))
+        return $send(self, 'method_missing', ["each"].concat($to_a(args)))
       };
-    }, $Object_each$30.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$[]', $Object_$$$31 = function(key) {
+    $def(self, '$[]', function $Object_$$$16(key) {
       var self = this;
 
       
@@ -434,179 +397,157 @@ Opal.modules["native"] = function(Opal) {
         return prop;
       }
       else {
-        return $$$('::', 'Native').$call(self["native"], key)
+        return $$$('Native').$call(self["native"], key)
       }
     
-    }, $Object_$$$31.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$[]=', $Object_$$$eq$32 = function(key, value) {
+    $def(self, '$[]=', function $Object_$$$eq$17(key, value) {
       var self = this, native$ = nil;
 
       
-      native$ = $$$('::', 'Native').$try_convert(value);
+      native$ = $$$('Native').$try_convert(value);
       if ($truthy(native$ === nil)) {
         return self["native"][key] = value
       } else {
         return self["native"][key] = native$
       };
-    }, $Object_$$$eq$32.$$arity = 2);
+    }, 2);
     
-    Opal.def(self, '$merge!', $Object_merge$excl$33 = function(other) {
+    $def(self, '$merge!', function $Object_merge$excl$18(other) {
       var self = this;
 
       
       
-      other = $$$('::', 'Native').$convert(other);
+      other = $$$('Native').$convert(other);
 
       for (var prop in other) {
         self["native"][prop] = other[prop];
       }
     ;
       return self;
-    }, $Object_merge$excl$33.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$respond_to?', $Object_respond_to$ques$34 = function(name, include_all) {
+    $def(self, '$respond_to?', function $Object_respond_to$ques$19(name, include_all) {
       var self = this;
 
       
       
-      if (include_all == null) {
-        include_all = false;
-      };
-      return $$$('::', 'Kernel').$instance_method("respond_to?").$bind(self).$call(name, include_all);
-    }, $Object_respond_to$ques$34.$$arity = -2);
+      if (include_all == null) include_all = false;;
+      return $Kernel.$instance_method("respond_to?").$bind(self).$call(name, include_all);
+    }, -2);
     
-    Opal.def(self, '$respond_to_missing?', $Object_respond_to_missing$ques$35 = function(name, include_all) {
+    $def(self, '$respond_to_missing?', function $Object_respond_to_missing$ques$20(name, include_all) {
       var self = this;
 
       
       
-      if (include_all == null) {
-        include_all = false;
-      };
+      if (include_all == null) include_all = false;;
       return Opal.hasOwnProperty.call(self["native"], name);
-    }, $Object_respond_to_missing$ques$35.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$method_missing', $Object_method_missing$36 = function $$method_missing(mid, $a) {
-      var $iter = $Object_method_missing$36.$$p, block = $iter || nil, $post_args, args, self = this, $writer = nil;
+    $def(self, '$method_missing', function $$method_missing(mid, $a) {
+      var block = $$method_missing.$$p || nil, $post_args, args, self = this, $writer = nil;
 
-      if ($iter) $Object_method_missing$36.$$p = null;
-      
+      delete $$method_missing.$$p;
       
-      if ($iter) $Object_method_missing$36.$$p = null;;
+      ;
       
-      $post_args = Opal.slice.call(arguments, 1, arguments.length);
+      $post_args = Opal.slice.call(arguments, 1);
       
       args = $post_args;;
       
       if (mid.charAt(mid.length - 1) === '=') {
-        return (($writer = [mid.$slice(0, $rb_minus(mid.$length(), 1)), args['$[]'](0)]), $send(self, '[]=', Opal.to_a($writer)), $writer[$rb_minus($writer["length"], 1)]);
+        return (($writer = [mid.$slice(0, $rb_minus(mid.$length(), 1)), args['$[]'](0)]), $send(self, '[]=', $to_a($writer)), $writer[$rb_minus($writer["length"], 1)]);
       }
       else {
-        return $send($$$('::', 'Native'), 'call', [self["native"], mid].concat(Opal.to_a(args)), block.$to_proc());
+        return $send($$$('Native'), 'call', [self["native"], mid].concat($to_a(args)), block.$to_proc());
       }
     ;
-    }, $Object_method_missing$36.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$nil?', $Object_nil$ques$37 = function() {
-      var self = this;
-
+    $def(self, '$nil?', function $Object_nil$ques$21() {
+      
       return false
-    }, $Object_nil$ques$37.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$is_a?', $Object_is_a$ques$38 = function(klass) {
+    $def(self, '$is_a?', function $Object_is_a$ques$22(klass) {
       var self = this;
 
       return Opal.is_a(self, klass);
-    }, $Object_is_a$ques$38.$$arity = 1);
-    $alias(self, "kind_of?", "is_a?");
+    }, 1);
     
-    Opal.def(self, '$instance_of?', $Object_instance_of$ques$39 = function(klass) {
+    $def(self, '$instance_of?', function $Object_instance_of$ques$23(klass) {
       var self = this;
 
       return self.$$class === klass;
-    }, $Object_instance_of$ques$39.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$class', $Object_class$40 = function() {
+    $def(self, '$class', function $Object_class$24() {
       var self = this;
 
       return self.$$class;
-    }, $Object_class$40.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_a', $Object_to_a$41 = function $$to_a(options) {
-      var $iter = $Object_to_a$41.$$p, block = $iter || nil, self = this;
+    $def(self, '$to_a', function $$to_a(options) {
+      var block = $$to_a.$$p || nil, self = this;
 
-      if ($iter) $Object_to_a$41.$$p = null;
-      
+      delete $$to_a.$$p;
       
-      if ($iter) $Object_to_a$41.$$p = null;;
+      ;
       
-      if (options == null) {
-        options = $hash2([], {});
-      };
-      return $send($$$($$$('::', 'Native'), 'Array'), 'new', [self["native"], options], block.$to_proc()).$to_a();
-    }, $Object_to_a$41.$$arity = -1);
-    return (Opal.def(self, '$inspect', $Object_inspect$42 = function $$inspect() {
+      if (options == null) options = $hash2([], {});;
+      return $send($$$($$$('Native'), 'Array'), 'new', [self["native"], options], block.$to_proc()).$to_a();
+    }, -1);
+    
+    $def(self, '$inspect', function $$inspect() {
       var self = this;
 
-      return "" + "#<Native:" + (String(self["native"])) + ">"
-    }, $Object_inspect$42.$$arity = 0), nil) && 'inspect';
-  })($$($nesting, 'Native'), $$($nesting, 'BasicObject'), $nesting);
+      return "#<Native:" + (String(self["native"])) + ">"
+    }, 0);
+    $alias(self, "include?", "has_key?");
+    $alias(self, "key?", "has_key?");
+    $alias(self, "kind_of?", "is_a?");
+    return $alias(self, "member?", "has_key?");
+  })($$('Native'), $$('BasicObject'));
   (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Array');
 
-    var $nesting = [self].concat($parent_nesting), $Array_initialize$43, $Array_each$44, $Array_$$$45, $Array_$$$eq$46, $Array_last$47, $Array_length$48, $Array_inspect$49;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-    self.$$prototype.named = self.$$prototype["native"] = self.$$prototype.get = self.$$prototype.block = self.$$prototype.set = self.$$prototype.length = nil;
+    $proto.named = $proto["native"] = $proto.get = $proto.block = $proto.set = $proto.length = nil;
     
-    self.$include($$$($$($nesting, 'Native'), 'Wrapper'));
-    self.$include($$($nesting, 'Enumerable'));
+    self.$include($$$($$('Native'), 'Wrapper'));
+    self.$include($$('Enumerable'));
     
-    Opal.def(self, '$initialize', $Array_initialize$43 = function $$initialize(native$, options) {
-      var $iter = $Array_initialize$43.$$p, block = $iter || nil, self = this, $ret_or_1 = nil, $ret_or_2 = nil, $ret_or_3 = nil;
+    $def(self, '$initialize', function $$initialize(native$, options) {
+      var block = $$initialize.$$p || nil, self = this, $ret_or_1 = nil;
 
-      if ($iter) $Array_initialize$43.$$p = null;
-      
+      delete $$initialize.$$p;
       
-      if ($iter) $Array_initialize$43.$$p = null;;
+      ;
       
-      if (options == null) {
-        options = $hash2([], {});
-      };
-      $send2(self, $find_super(self, 'initialize', $Array_initialize$43, false, true), 'initialize', [native$], null);
-      self.get = (function() {if ($truthy(($ret_or_1 = options['$[]']("get")))) {
-        return $ret_or_1
-      } else {
-        return options['$[]']("access")
-      }; return nil; })();
+      if (options == null) options = $hash2([], {});;
+      $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [native$], null);
+      self.get = ($truthy(($ret_or_1 = options['$[]']("get"))) ? ($ret_or_1) : (options['$[]']("access")));
       self.named = options['$[]']("named");
-      self.set = (function() {if ($truthy(($ret_or_2 = options['$[]']("set")))) {
-        return $ret_or_2
-      } else {
-        return options['$[]']("access")
-      }; return nil; })();
-      self.length = (function() {if ($truthy(($ret_or_3 = options['$[]']("length")))) {
-        return $ret_or_3
-      } else {
-        return "length"
-      }; return nil; })();
+      self.set = ($truthy(($ret_or_1 = options['$[]']("set"))) ? ($ret_or_1) : (options['$[]']("access")));
+      self.length = ($truthy(($ret_or_1 = options['$[]']("length"))) ? ($ret_or_1) : ("length"));
       self.block = block;
       if ($truthy(self.$length() == null)) {
-        return self.$raise($$($nesting, 'ArgumentError'), "no length found on the array-like object")
+        return self.$raise($$('ArgumentError'), "no length found on the array-like object")
       } else {
         return nil
       };
-    }, $Array_initialize$43.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$each', $Array_each$44 = function $$each() {
-      var $iter = $Array_each$44.$$p, block = $iter || nil, self = this;
+    $def(self, '$each', function $$each() {
+      var block = $$each.$$p || nil, self = this;
 
-      if ($iter) $Array_each$44.$$p = null;
+      delete $$each.$$p;
       
-      
-      if ($iter) $Array_each$44.$$p = null;;
-      if ($truthy(block)) {
-      } else {
+      ;
+      if (!$truthy(block)) {
         return self.$enum_for("each")
       };
       
@@ -615,24 +556,13 @@ Opal.modules["native"] = function(Opal) {
       }
     ;
       return self;
-    }, $Array_each$44.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$[]', $Array_$$$45 = function(index) {
-      var self = this, result = nil, $case = nil;
+    $def(self, '$[]', function $Array_$$$25(index) {
+      var self = this, result = nil, $ret_or_1 = nil;
 
       
-      result = (function() {$case = index;
-      if ($$($nesting, 'String')['$===']($case) || $$($nesting, 'Symbol')['$===']($case)) {if ($truthy(self.named)) {
-        return self["native"][self.named](index)
-      } else {
-        return self["native"][index]
-      }}
-      else if ($$($nesting, 'Integer')['$===']($case)) {if ($truthy(self.get)) {
-        return self["native"][self.get](index)
-      } else {
-        return self["native"][index]
-      }}
-      else { return nil }})();
+      result = (($eqeqeq($$('String'), ($ret_or_1 = index)) || ($eqeqeq($$('Symbol'), $ret_or_1))) ? (($truthy(self.named) ? (self["native"][self.named](index)) : (self["native"][index]))) : ($eqeqeq($$('Integer'), $ret_or_1) ? (($truthy(self.get) ? (self["native"][self.get](index)) : (self["native"][index]))) : (nil)));
       if ($truthy(result)) {
         if ($truthy(self.block)) {
           return self.block.$call(result)
@@ -642,26 +572,24 @@ Opal.modules["native"] = function(Opal) {
       } else {
         return nil
       };
-    }, $Array_$$$45.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$[]=', $Array_$$$eq$46 = function(index, value) {
+    $def(self, '$[]=', function $Array_$$$eq$26(index, value) {
       var self = this;
 
       if ($truthy(self.set)) {
-        return self["native"][self.set](index, $$($nesting, 'Native').$convert(value))
+        return self["native"][self.set](index, $$('Native').$convert(value))
       } else {
-        return self["native"][index] = $$($nesting, 'Native').$convert(value)
+        return self["native"][index] = $$('Native').$convert(value)
       }
-    }, $Array_$$$eq$46.$$arity = 2);
+    }, 2);
     
-    Opal.def(self, '$last', $Array_last$47 = function $$last(count) {
+    $def(self, '$last', function $$last(count) {
       var $a, self = this, index = nil, result = nil;
 
       
       
-      if (count == null) {
-        count = nil;
-      };
+      if (count == null) count = nil;;
       if ($truthy(count)) {
         
         index = $rb_minus(self.$length(), 1);
@@ -675,107 +603,99 @@ Opal.modules["native"] = function(Opal) {
       } else {
         return self['$[]']($rb_minus(self.$length(), 1))
       };
-    }, $Array_last$47.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$length', $Array_length$48 = function $$length() {
+    $def(self, '$length', function $$length() {
       var self = this;
 
       return self["native"][self.length]
-    }, $Array_length$48.$$arity = 0);
-    $alias(self, "to_ary", "to_a");
-    return (Opal.def(self, '$inspect', $Array_inspect$49 = function $$inspect() {
+    }, 0);
+    
+    $def(self, '$inspect', function $$inspect() {
       var self = this;
 
       return self.$to_a().$inspect()
-    }, $Array_inspect$49.$$arity = 0), nil) && 'inspect';
-  })($$($nesting, 'Native'), null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 0);
+    return $alias(self, "to_ary", "to_a");
+  })($$('Native'), null, $nesting);
+  (function($base, $super) {
     var self = $klass($base, $super, 'Numeric');
 
-    var $nesting = [self].concat($parent_nesting), $Numeric_to_n$50;
-
-    return (Opal.def(self, '$to_n', $Numeric_to_n$50 = function $$to_n() {
+    
+    return $def(self, '$to_n', function $$to_n() {
       var self = this;
 
       return self.valueOf();
-    }, $Numeric_to_n$50.$$arity = 0), nil) && 'to_n'
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 0)
+  })($nesting[0], null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'Proc');
 
-    var $nesting = [self].concat($parent_nesting), $Proc_to_n$51;
-
-    return (Opal.def(self, '$to_n', $Proc_to_n$51 = function $$to_n() {
+    
+    return $def(self, '$to_n', function $$to_n() {
       var self = this;
 
       return self
-    }, $Proc_to_n$51.$$arity = 0), nil) && 'to_n'
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 0)
+  })($nesting[0], null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'String');
 
-    var $nesting = [self].concat($parent_nesting), $String_to_n$52;
-
-    return (Opal.def(self, '$to_n', $String_to_n$52 = function $$to_n() {
+    
+    return $def(self, '$to_n', function $$to_n() {
       var self = this;
 
       return self.valueOf();
-    }, $String_to_n$52.$$arity = 0), nil) && 'to_n'
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 0)
+  })($nesting[0], null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'Regexp');
 
-    var $nesting = [self].concat($parent_nesting), $Regexp_to_n$53;
-
-    return (Opal.def(self, '$to_n', $Regexp_to_n$53 = function $$to_n() {
+    
+    return $def(self, '$to_n', function $$to_n() {
       var self = this;
 
       return self.valueOf();
-    }, $Regexp_to_n$53.$$arity = 0), nil) && 'to_n'
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 0)
+  })($nesting[0], null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'MatchData');
 
-    var $nesting = [self].concat($parent_nesting), $MatchData_to_n$54;
+    var $proto = self.$$prototype;
 
-    self.$$prototype.matches = nil;
-    return (Opal.def(self, '$to_n', $MatchData_to_n$54 = function $$to_n() {
+    $proto.matches = nil;
+    return $def(self, '$to_n', function $$to_n() {
       var self = this;
 
       return self.matches
-    }, $MatchData_to_n$54.$$arity = 0), nil) && 'to_n'
-  })($nesting[0], null, $nesting);
+    }, 0)
+  })($nesting[0], null);
   (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Struct');
 
-    var $nesting = [self].concat($parent_nesting), $Struct_to_n$55;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-    return (Opal.def(self, '$to_n', $Struct_to_n$55 = function $$to_n() {
-      var $$56, self = this, result = nil;
+    return $def(self, '$to_n', function $$to_n() {
+      var self = this, result = nil;
 
       
       result = {};
-      $send(self, 'each_pair', [], ($$56 = function(name, value){var self = $$56.$$s == null ? this : $$56.$$s;
-
+      $send(self, 'each_pair', [], function $$27(name, value){
         
         
-        if (name == null) {
-          name = nil;
-        };
+        if (name == null) name = nil;;
         
-        if (value == null) {
-          value = nil;
-        };
-        return result[name] = $$($nesting, 'Native').$try_convert(value, value);}, $$56.$$s = self, $$56.$$arity = 2, $$56));
+        if (value == null) value = nil;;
+        return result[name] = $$('Native').$try_convert(value, value);}, 2);
       return result;
-    }, $Struct_to_n$55.$$arity = 0), nil) && 'to_n'
+    }, 0)
   })($nesting[0], null, $nesting);
   (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Array');
 
-    var $nesting = [self].concat($parent_nesting), $Array_to_n$57;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-    return (Opal.def(self, '$to_n', $Array_to_n$57 = function $$to_n() {
+    return $def(self, '$to_n', function $$to_n() {
       var self = this;
 
       
@@ -784,254 +704,247 @@ Opal.modules["native"] = function(Opal) {
       for (var i = 0, length = self.length; i < length; i++) {
         var obj = self[i];
 
-        result.push($$($nesting, 'Native').$try_convert(obj, obj));
+        result.push($$('Native').$try_convert(obj, obj));
       }
 
       return result;
     
-    }, $Array_to_n$57.$$arity = 0), nil) && 'to_n'
+    }, 0)
   })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+  (function($base, $super) {
     var self = $klass($base, $super, 'Boolean');
 
-    var $nesting = [self].concat($parent_nesting), $Boolean_to_n$58;
-
-    return (Opal.def(self, '$to_n', $Boolean_to_n$58 = function $$to_n() {
+    
+    return $def(self, '$to_n', function $$to_n() {
       var self = this;
 
       return self.valueOf();
-    }, $Boolean_to_n$58.$$arity = 0), nil) && 'to_n'
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 0)
+  })($nesting[0], null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'Time');
 
-    var $nesting = [self].concat($parent_nesting), $Time_to_n$59;
-
-    return (Opal.def(self, '$to_n', $Time_to_n$59 = function $$to_n() {
+    
+    return $def(self, '$to_n', function $$to_n() {
       var self = this;
 
       return self
-    }, $Time_to_n$59.$$arity = 0), nil) && 'to_n'
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 0)
+  })($nesting[0], null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'NilClass');
 
-    var $nesting = [self].concat($parent_nesting), $NilClass_to_n$60;
-
-    return (Opal.def(self, '$to_n', $NilClass_to_n$60 = function $$to_n() {
-      var self = this;
-
+    
+    return $def(self, '$to_n', function $$to_n() {
+      
       return null;
-    }, $NilClass_to_n$60.$$arity = 0), nil) && 'to_n'
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'Hash');
+    }, 0)
+  })($nesting[0], null);
+  if (!$truthy($$('Hash')['$method_defined?']("_initialize"))) {
+    (function($base, $super, $parent_nesting) {
+      var self = $klass($base, $super, 'Hash');
 
-    var $nesting = [self].concat($parent_nesting), $Hash_initialize$61, $Hash_to_n$62;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-    
-    $alias(self, "_initialize", "initialize");
-    
-    Opal.def(self, '$initialize', $Hash_initialize$61 = function $$initialize(defaults) {
-      var $iter = $Hash_initialize$61.$$p, block = $iter || nil, self = this;
-
-      if ($iter) $Hash_initialize$61.$$p = null;
       
+      $alias(self, "_initialize", "initialize");
       
-      if ($iter) $Hash_initialize$61.$$p = null;;
-      ;
-      
-      if (defaults != null &&
-           (defaults.constructor === undefined ||
-             defaults.constructor === Object)) {
-        var smap = self.$$smap,
-            keys = self.$$keys,
-            key, value;
+      $def(self, '$initialize', function $$initialize(defaults) {
+        var block = $$initialize.$$p || nil, self = this;
 
-        for (key in defaults) {
-          value = defaults[key];
-
-          if (value &&
-               (value.constructor === undefined ||
-                 value.constructor === Object)) {
-            smap[key] = $$($nesting, 'Hash').$new(value);
-          } else if (value && value.$$is_array) {
-            value = value.map(function(item) {
-              if (item &&
-                   (item.constructor === undefined ||
-                     item.constructor === Object)) {
-                return $$($nesting, 'Hash').$new(item);
-              }
-
-              return self.$Native(item);
-            });
-            smap[key] = value
-          } else {
-            smap[key] = self.$Native(value);
+        delete $$initialize.$$p;
+        
+        ;
+        ;
+        
+        if (defaults != null &&
+             (defaults.constructor === undefined ||
+               defaults.constructor === Object)) {
+          var smap = self.$$smap,
+              keys = self.$$keys,
+              key, value;
+
+          for (key in defaults) {
+            value = defaults[key];
+
+            if (value &&
+                 (value.constructor === undefined ||
+                   value.constructor === Object)) {
+              smap[key] = $$('Hash').$new(value);
+            } else if (value && value.$$is_array) {
+              value = value.map(function(item) {
+                if (item &&
+                     (item.constructor === undefined ||
+                       item.constructor === Object)) {
+                  return $$('Hash').$new(item);
+                }
+
+                return self.$Native(item);
+              });
+              smap[key] = value
+            } else {
+              smap[key] = self.$Native(value);
+            }
+
+            keys.push(key);
           }
 
-          keys.push(key);
+          return self;
         }
 
-        return self;
-      }
+        return $send(self, '_initialize', [defaults], block.$to_proc());
+      ;
+      }, -1);
+      return $def(self, '$to_n', function $$to_n() {
+        var self = this;
 
-      return $send(self, '_initialize', [defaults], block.$to_proc());
-    ;
-    }, $Hash_initialize$61.$$arity = -1);
-    return (Opal.def(self, '$to_n', $Hash_to_n$62 = function $$to_n() {
-      var self = this;
+        
+        var result = {},
+            keys = self.$$keys,
+            smap = self.$$smap,
+            key, value;
 
-      
-      var result = {},
-          keys = self.$$keys,
-          smap = self.$$smap,
-          key, value;
+        for (var i = 0, length = keys.length; i < length; i++) {
+          key = keys[i];
 
-      for (var i = 0, length = keys.length; i < length; i++) {
-        key = keys[i];
+          if (key.$$is_string) {
+            value = smap[key];
+          } else {
+            key = key.key;
+            value = key.value;
+          }
 
-        if (key.$$is_string) {
-          value = smap[key];
-        } else {
-          key = key.key;
-          value = key.value;
+          result[key] = $$('Native').$try_convert(value, value);
         }
 
-        result[key] = $$($nesting, 'Native').$try_convert(value, value);
-      }
-
-      return result;
-    
-    }, $Hash_to_n$62.$$arity = 0), nil) && 'to_n';
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+        return result;
+      
+      }, 0);
+    })($nesting[0], null, $nesting)
+  };
+  (function($base, $super) {
     var self = $klass($base, $super, 'Module');
 
-    var $nesting = [self].concat($parent_nesting), $Module_native_module$63;
-
-    return (Opal.def(self, '$native_module', $Module_native_module$63 = function $$native_module() {
+    
+    return $def(self, '$native_module', function $$native_module() {
       var self = this;
 
       return Opal.global[self.$name()] = self
-    }, $Module_native_module$63.$$arity = 0), nil) && 'native_module'
-  })($nesting[0], null, $nesting);
+    }, 0)
+  })($nesting[0], null);
   (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Class');
 
-    var $nesting = [self].concat($parent_nesting), $Class_native_alias$64, $Class_native_class$65;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
     
-    Opal.def(self, '$native_alias', $Class_native_alias$64 = function $$native_alias(new_jsid, existing_mid) {
+    $def(self, '$native_alias', function $$native_alias(new_jsid, existing_mid) {
       var self = this;
 
       
       var aliased = self.prototype['$' + existing_mid];
       if (!aliased) {
-        self.$raise($$($nesting, 'NameError').$new("" + "undefined method `" + (existing_mid) + "' for class `" + (self.$inspect()) + "'", existing_mid));
+        self.$raise($$('NameError').$new("undefined method `" + (existing_mid) + "' for class `" + (self.$inspect()) + "'", existing_mid));
       }
       self.prototype[new_jsid] = aliased;
     
-    }, $Class_native_alias$64.$$arity = 2);
-    return (Opal.def(self, '$native_class', $Class_native_class$65 = function $$native_class() {
+    }, 2);
+    return $def(self, '$native_class', function $$native_class() {
       var self = this;
 
       
       self.$native_module();
       return self["new"] = self.$new;;
-    }, $Class_native_class$65.$$arity = 0), nil) && 'native_class';
+    }, 0);
   })($nesting[0], null, $nesting);
   return ($gvars.$ = ($gvars.global = self.$Native(Opal.global)));
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["console"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send, $gvars = Opal.gvars;
+Opal.modules["console"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $def = Opal.def, $truthy = Opal.truthy, $eqeq = Opal.eqeq, $send = Opal.send, $gvars = Opal.gvars;
 
-  Opal.add_stubs(['$require', '$include', '$raise', '$==', '$arity', '$instance_exec', '$to_proc', '$new']);
+  Opal.add_stubs('require,include,raise,==,arity,instance_exec,to_proc,new');
   
   self.$require("native");
   (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Console');
 
-    var $nesting = [self].concat($parent_nesting), $Console_clear$1, $Console_trace$2, $Console_log$3, $Console_info$4, $Console_warn$5, $Console_error$6, $Console_time$7, $Console_group$8, $Console_group$excl$9;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-    self.$$prototype["native"] = nil;
+    $proto["native"] = nil;
     
-    self.$include($$$($$($nesting, 'Native'), 'Wrapper'));
+    self.$include($$$($$('Native'), 'Wrapper'));
     
-    Opal.def(self, '$clear', $Console_clear$1 = function $$clear() {
+    $def(self, '$clear', function $$clear() {
       var self = this;
 
       return self["native"].clear()
-    }, $Console_clear$1.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$trace', $Console_trace$2 = function $$trace() {
+    $def(self, '$trace', function $$trace() {
       var self = this;
 
       return self["native"].trace()
-    }, $Console_trace$2.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$log', $Console_log$3 = function $$log($a) {
+    $def(self, '$log', function $$log($a) {
       var $post_args, args, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
       return self["native"].log.apply(self["native"], args);
-    }, $Console_log$3.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$info', $Console_info$4 = function $$info($a) {
+    $def(self, '$info', function $$info($a) {
       var $post_args, args, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
       return self["native"].info.apply(self["native"], args);
-    }, $Console_info$4.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$warn', $Console_warn$5 = function $$warn($a) {
+    $def(self, '$warn', function $$warn($a) {
       var $post_args, args, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
       return self["native"].warn.apply(self["native"], args);
-    }, $Console_warn$5.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$error', $Console_error$6 = function $$error($a) {
+    $def(self, '$error', function $$error($a) {
       var $post_args, args, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
       return self["native"].error.apply(self["native"], args);
-    }, $Console_error$6.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$time', $Console_time$7 = function $$time(label) {
-      var $iter = $Console_time$7.$$p, block = $iter || nil, self = this;
+    $def(self, '$time', function $$time(label) {
+      var block = $$time.$$p || nil, self = this;
 
-      if ($iter) $Console_time$7.$$p = null;
-      
+      delete $$time.$$p;
       
-      if ($iter) $Console_time$7.$$p = null;;
-      if ($truthy(block)) {
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "no block given")
+      ;
+      if (!$truthy(block)) {
+        self.$raise($$('ArgumentError'), "no block given")
       };
       self["native"].time(label);
       
       return (function() { try {
-      if (block.$arity()['$=='](0)) {
+      if ($eqeq(block.$arity(), 0)) {
         return $send(self, 'instance_exec', [], block.$to_proc())
       } else {
         return Opal.yield1(block, self);
@@ -1039,27 +952,25 @@ Opal.modules["console"] = function(Opal) {
       } finally {
         self["native"].timeEnd()
       }; })();;
-    }, $Console_time$7.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$group', $Console_group$8 = function $$group($a) {
-      var $iter = $Console_group$8.$$p, block = $iter || nil, $post_args, args, self = this;
+    $def(self, '$group', function $$group($a) {
+      var block = $$group.$$p || nil, $post_args, args, self = this;
 
-      if ($iter) $Console_group$8.$$p = null;
+      delete $$group.$$p;
       
+      ;
       
-      if ($iter) $Console_group$8.$$p = null;;
-      
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
-      if ($truthy(block)) {
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "no block given")
+      if (!$truthy(block)) {
+        self.$raise($$('ArgumentError'), "no block given")
       };
       self["native"].group.apply(self["native"], args);
       
       return (function() { try {
-      if (block.$arity()['$=='](0)) {
+      if ($eqeq(block.$arity(), 0)) {
         return $send(self, 'instance_exec', [], block.$to_proc())
       } else {
         return Opal.yield1(block, self);
@@ -1067,26 +978,24 @@ Opal.modules["console"] = function(Opal) {
       } finally {
         self["native"].groupEnd()
       }; })();;
-    }, $Console_group$8.$$arity = -1);
-    return (Opal.def(self, '$group!', $Console_group$excl$9 = function($a) {
-      var $iter = $Console_group$excl$9.$$p, block = $iter || nil, $post_args, args, self = this;
+    }, -1);
+    return $def(self, '$group!', function $Console_group$excl$1($a) {
+      var block = $Console_group$excl$1.$$p || nil, $post_args, args, self = this;
 
-      if ($iter) $Console_group$excl$9.$$p = null;
-      
+      delete $Console_group$excl$1.$$p;
       
-      if ($iter) $Console_group$excl$9.$$p = null;;
+      ;
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
-      if ((block !== nil)) {
-      } else {
+      if (!(block !== nil)) {
         return nil
       };
       self["native"].groupCollapsed.apply(self["native"], args);
       
       return (function() { try {
-      if (block.$arity()['$=='](0)) {
+      if ($eqeq(block.$arity(), 0)) {
         return $send(self, 'instance_exec', [], block.$to_proc())
       } else {
         return Opal.yield1(block, self);
@@ -1094,10 +1003,10 @@ Opal.modules["console"] = function(Opal) {
       } finally {
         self["native"].groupEnd()
       }; })();;
-    }, $Console_group$excl$9.$$arity = -1), nil) && 'group!';
+    }, -1);
   })($nesting[0], null, $nesting);
   if ($truthy((typeof(Opal.global.console) !== "undefined"))) {
-    return ($gvars.console = $$($nesting, 'Console').$new(Opal.global.console))
+    return ($gvars.console = $$('Console').$new(Opal.global.console))
   } else {
     return nil
   };
diff --git a/opal/master/console.min.js b/opal/master/console.min.js
index 73e37f07..28a34028 100644
--- a/opal/master/console.min.js
+++ b/opal/master/console.min.js
@@ -1 +1 @@
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null}),0)}($nesting[0]),$truthy($$("Hash")["$method_defined?"]("_initialize"))||function($base,$super,$parent_nesting){var self=$klass($base,null,"Hash"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);$alias(self,"_initialize","initialize"),$def(self,"$initialize",(function $$initialize(defaults){var block=$$initialize.$$p||nil,self=this;if(delete $$initialize.$$p,null!=defaults&&(void 0===defaults.constructor||defaults.constructor===Object)){var key,value,smap=self.$$smap,keys=self.$$keys;for(key in defaults)!(value=defaults[key])||void 0!==value.constructor&&value.constructor!==Object?value&&value.$$is_array?(value=value.map((function(item){return!item||void 0!==item.constructor&&item.constructor!==Object?self.$Native(item):$$("Hash").$new(item)})),smap[key]=value):smap[key]=self.$Native(value):smap[key]=$$("Hash").$new(value),keys.push(key);return self}return $send(self,"_initialize",[defaults],block.$to_proc())}),-1),$def(self,"$to_n",(function(){for(var key,value,result={},keys=this.$$keys,smap=this.$$smap,i=0,length=keys.length;i<length;i++)value=(key=keys[i]).$$is_string?smap[key]:(key=key.key).value,result[key]=$$("Native").$try_convert(value,value);return result}),0)}($nesting[0],0,$nesting),function($base,$super){var self=$klass($base,null,"Module");$def(self,"$native_module",(function(){return Opal.global[this.$name()]=this}),0)}($nesting[0]),function($base,$super,$parent_nesting){var self=$klass($base,null,"Class"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);$def(self,"$native_alias",(function(new_jsid,existing_mid){var aliased=this.prototype["$"+existing_mid];aliased||this.$raise($$("NameError").$new("undefined method `"+existing_mid+"' for class `"+this.$inspect()+"'",existing_mid)),this.prototype[new_jsid]=aliased}),2),$def(self,"$native_class",(function(){return this.$native_module(),this.new=this.$new}),0)}($nesting[0],0,$nesting),$gvars.$=$gvars.global=self.$Native(Opal.global)},Opal.modules.console=function(Opal){var self=Opal.top,$nesting=[],$$=Opal.$r($nesting),nil=Opal.nil,$$$=Opal.$$$,$klass=Opal.klass,$def=Opal.def,$truthy=Opal.truthy,$eqeq=Opal.eqeq,$send=Opal.send,$gvars=Opal.gvars;return Opal.add_stubs("require,include,raise,==,arity,instance_exec,to_proc,new"),self.$require("native"),function($base,$super,$parent_nesting){var self=$klass($base,null,"Console"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);self.$$prototype.native=nil,self.$include($$$($$("Native"),"Wrapper")),$def(self,"$clear",(function(){return this.native.clear()}),0),$def(self,"$trace",(function(){return this.native.trace()}),0),$def(self,"$log",(function($a){var args,self=this;return args=Opal.slice.call(arguments),self.native.log.apply(self.native,args)}),-1),$def(self,"$info",(function($a){var args,self=this;return args=Opal.slice.call(arguments),self.native.info.apply(self.native,args)}),-1),$def(self,"$warn",(function($a){var args,self=this;return args=Opal.slice.call(arguments),self.native.warn.apply(self.native,args)}),-1),$def(self,"$error",(function($a){var args,self=this;return args=Opal.slice.call(arguments),self.native.error.apply(self.native,args)}),-1),$def(self,"$time",(function $$time(label){var block=$$time.$$p||nil,self=this;return delete $$time.$$p,$truthy(block)||self.$raise($$("ArgumentError"),"no block given"),self.native.time(label),function(){try{return $eqeq(block.$arity(),0)?$send(self,"instance_exec",[],block.$to_proc()):Opal.yield1(block,self)}finally{self.native.timeEnd()}}()}),1),$def(self,"$group",(function $$group($a){var args,block=$$group.$$p||nil,self=this;return delete $$group.$$p,args=Opal.slice.call(arguments),$truthy(block)||self.$raise($$("ArgumentError"),"no block given"),self.native.group.apply(self.native,args),function(){try{return $eqeq(block.$arity(),0)?$send(self,"instance_exec",[],block.$to_proc()):Opal.yield1(block,self)}finally{self.native.groupEnd()}}()}),-1),$def(self,"$group!",(function $Console_group$excl$1($a){var args,block=$Console_group$excl$1.$$p||nil,self=this;return delete $Console_group$excl$1.$$p,args=Opal.slice.call(arguments),block===nil?nil:(self.native.groupCollapsed.apply(self.native,args),function(){try{return $eqeq(block.$arity(),0)?$send(self,"instance_exec",[],block.$to_proc()):Opal.yield1(block,self)}finally{self.native.groupEnd()}}())}),-1)}($nesting[0],0,$nesting),$truthy(void 0!==Opal.global.console)?$gvars.console=$$("Console").$new(Opal.global.console):nil};
diff --git a/opal/master/console.min.js.gz b/opal/master/console.min.js.gz
index ba9f87e8..7f3c7996 100644
Binary files a/opal/master/console.min.js.gz and b/opal/master/console.min.js.gz differ
diff --git a/opal/master/date.js b/opal/master/date.js
index 8c81d3d3..087a581b 100644
--- a/opal/master/date.js
+++ b/opal/master/date.js
@@ -1,170 +1,1268 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["date"] = function(Opal) {
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  function $rb_times(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs * rhs : lhs['$*'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $truthy = Opal.truthy, $alias = Opal.alias, $send = Opal.send;
-
-  Opal.add_stubs(['$include', '$<=>', '$attr_reader', '$nonzero?', '$d', '$zero?', '$new', '$class', '$-@', '$+@', '$===', '$coerce', '$==', '$>', '$+', '$allocate', '$join', '$compact', '$map', '$to_proc', '$downcase', '$wrap', '$raise', '$clone', '$jd', '$>>', '$wday', '$year', '$month', '$day', '$-', '$to_s', '$to_i', '$<', '$*', '$reverse', '$step', '$abs', '$each']);
+Opal.modules["forwardable"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $send = Opal.send, $truthy = Opal.truthy, $def = Opal.def, $to_a = Opal.to_a, $alias = Opal.alias;
+
+  Opal.add_stubs('each,respond_to?,def_instance_delegator,include?,start_with?,to_s,define_method,__send__,instance_variable_get,to_proc,def_single_delegator,define_singleton_method');
+  
+  (function($base) {
+    var self = $module($base, 'Forwardable');
+
+    
+    
+    
+    $def(self, '$instance_delegate', function $$instance_delegate(hash) {
+      var self = this;
+
+      return $send(hash, 'each', [], function $$1(methods, accessor){var self = $$1.$$s == null ? this : $$1.$$s;
+
+        
+        
+        if (methods == null) methods = nil;;
+        
+        if (accessor == null) accessor = nil;;
+        if (!$truthy(methods['$respond_to?']("each"))) {
+          methods = [methods]
+        };
+        return $send(methods, 'each', [], function $$2(method){var self = $$2.$$s == null ? this : $$2.$$s;
+
+          
+          
+          if (method == null) method = nil;;
+          return self.$def_instance_delegator(accessor, method);}, {$$arity: 1, $$s: self});}, {$$arity: 2, $$s: self})
+    }, 1);
+    
+    $def(self, '$def_instance_delegators', function $$def_instance_delegators(accessor, $a) {
+      var $post_args, methods, self = this;
+
+      
+      
+      $post_args = Opal.slice.call(arguments, 1);
+      
+      methods = $post_args;;
+      return $send(methods, 'each', [], function $$3(method){var self = $$3.$$s == null ? this : $$3.$$s;
+
+        
+        
+        if (method == null) method = nil;;
+        if ($truthy(["__send__", "__id__"]['$include?'](method))) {
+          return nil;
+        };
+        return self.$def_instance_delegator(accessor, method);}, {$$arity: 1, $$s: self});
+    }, -2);
+    
+    $def(self, '$def_instance_delegator', function $$def_instance_delegator(accessor, method, ali) {
+      var $yield = $$def_instance_delegator.$$p || nil, self = this;
+
+      delete $$def_instance_delegator.$$p;
+      
+      
+      if (ali == null) ali = method;;
+      if ($truthy(accessor.$to_s()['$start_with?']("@"))) {
+        return $send(self, 'define_method', [ali], function $$4($a){var block = $$4.$$p || nil, $post_args, args, self = $$4.$$s == null ? this : $$4.$$s;
+
+          delete $$4.$$p;
+          
+          ;
+          
+          $post_args = Opal.slice.call(arguments);
+          
+          args = $post_args;;
+          return $send(self.$instance_variable_get(accessor), '__send__', [method].concat($to_a(args)), block.$to_proc());}, {$$arity: -1, $$s: self})
+      } else {
+        return $send(self, 'define_method', [ali], function $$5($a){var block = $$5.$$p || nil, $post_args, args, self = $$5.$$s == null ? this : $$5.$$s;
+
+          delete $$5.$$p;
+          
+          ;
+          
+          $post_args = Opal.slice.call(arguments);
+          
+          args = $post_args;;
+          return $send(self.$__send__(accessor), '__send__', [method].concat($to_a(args)), block.$to_proc());}, {$$arity: -1, $$s: self})
+      };
+    }, -3);
+    $alias(self, "delegate", "instance_delegate");
+    $alias(self, "def_delegators", "def_instance_delegators");
+    return $alias(self, "def_delegator", "def_instance_delegator");
+  })($nesting[0]);
+  return (function($base) {
+    var self = $module($base, 'SingleForwardable');
+
+    
+    
+    
+    $def(self, '$single_delegate', function $$single_delegate(hash) {
+      var self = this;
+
+      return $send(hash, 'each', [], function $$6(methods, accessor){var self = $$6.$$s == null ? this : $$6.$$s;
+
+        
+        
+        if (methods == null) methods = nil;;
+        
+        if (accessor == null) accessor = nil;;
+        if (!$truthy(methods['$respond_to?']("each"))) {
+          methods = [methods]
+        };
+        return $send(methods, 'each', [], function $$7(method){var self = $$7.$$s == null ? this : $$7.$$s;
+
+          
+          
+          if (method == null) method = nil;;
+          return self.$def_single_delegator(accessor, method);}, {$$arity: 1, $$s: self});}, {$$arity: 2, $$s: self})
+    }, 1);
+    
+    $def(self, '$def_single_delegators', function $$def_single_delegators(accessor, $a) {
+      var $post_args, methods, self = this;
+
+      
+      
+      $post_args = Opal.slice.call(arguments, 1);
+      
+      methods = $post_args;;
+      return $send(methods, 'each', [], function $$8(method){var self = $$8.$$s == null ? this : $$8.$$s;
+
+        
+        
+        if (method == null) method = nil;;
+        if ($truthy(["__send__", "__id__"]['$include?'](method))) {
+          return nil;
+        };
+        return self.$def_single_delegator(accessor, method);}, {$$arity: 1, $$s: self});
+    }, -2);
+    
+    $def(self, '$def_single_delegator', function $$def_single_delegator(accessor, method, ali) {
+      var $yield = $$def_single_delegator.$$p || nil, self = this;
+
+      delete $$def_single_delegator.$$p;
+      
+      
+      if (ali == null) ali = method;;
+      if ($truthy(accessor.$to_s()['$start_with?']("@"))) {
+        return $send(self, 'define_singleton_method', [ali], function $$9($a){var block = $$9.$$p || nil, $post_args, args, self = $$9.$$s == null ? this : $$9.$$s;
+
+          delete $$9.$$p;
+          
+          ;
+          
+          $post_args = Opal.slice.call(arguments);
+          
+          args = $post_args;;
+          return $send(self.$instance_variable_get(accessor), '__send__', [method].concat($to_a(args)), block.$to_proc());}, {$$arity: -1, $$s: self})
+      } else {
+        return $send(self, 'define_singleton_method', [ali], function $$10($a){var block = $$10.$$p || nil, $post_args, args, self = $$10.$$s == null ? this : $$10.$$s;
+
+          delete $$10.$$p;
+          
+          ;
+          
+          $post_args = Opal.slice.call(arguments);
+          
+          args = $post_args;;
+          return $send(self.$__send__(accessor), '__send__', [method].concat($to_a(args)), block.$to_proc());}, {$$arity: -1, $$s: self})
+      };
+    }, -3);
+    $alias(self, "delegate", "single_delegate");
+    $alias(self, "def_delegators", "def_single_delegators");
+    return $alias(self, "def_delegator", "def_single_delegator");
+  })($nesting[0]);
+};
+
+Opal.modules["date/infinity"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $def = Opal.def, $eqeqeq = Opal.eqeqeq, $to_ary = Opal.to_ary, $send2 = Opal.send2, $find_super = Opal.find_super, $eqeq = Opal.eqeq, $truthy = Opal.truthy, $rb_gt = Opal.rb_gt;
+
+  Opal.add_stubs('include,<=>,attr_reader,nonzero?,d,zero?,new,class,-@,+@,===,coerce,==,>');
+  return (function($base, $super, $parent_nesting) {
+    var self = $klass($base, $super, 'Date');
+
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+    return (function($base, $super, $parent_nesting) {
+      var self = $klass($base, $super, 'Infinity');
+
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
+
+      $proto.d = nil;
+      
+      self.$include($$('Comparable'));
+      
+      $def(self, '$initialize', function $$initialize(d) {
+        var self = this;
+
+        
+        
+        if (d == null) d = 1;;
+        return (self.d = d['$<=>'](0));
+      }, -1);
+      self.$attr_reader("d");
+      
+      $def(self, '$zero?', function $Infinity_zero$ques$1() {
+        
+        return false
+      }, 0);
+      
+      $def(self, '$finite?', function $Infinity_finite$ques$2() {
+        
+        return false
+      }, 0);
+      
+      $def(self, '$infinite?', function $Infinity_infinite$ques$3() {
+        var self = this;
+
+        return self.$d()['$nonzero?']()
+      }, 0);
+      
+      $def(self, '$nan?', function $Infinity_nan$ques$4() {
+        var self = this;
+
+        return self.$d()['$zero?']()
+      }, 0);
+      
+      $def(self, '$abs', function $$abs() {
+        var self = this;
+
+        return self.$class().$new()
+      }, 0);
+      
+      $def(self, '$-@', function $Infinity_$minus$$5() {
+        var self = this;
+
+        return self.$class().$new(self.$d()['$-@']())
+      }, 0);
+      
+      $def(self, '$+@', function $Infinity_$plus$$6() {
+        var self = this;
+
+        return self.$class().$new(self.$d()['$+@']())
+      }, 0);
+      
+      $def(self, '$<=>', function $Infinity_$lt_eq_gt$7(other) {
+        var $a, $b, self = this, $ret_or_1 = nil, l = nil, r = nil;
+
+        if ($eqeqeq($$('Infinity'), ($ret_or_1 = other))) {
+          return self.$d()['$<=>'](other.$d())
+        } else if ($eqeqeq($$('Numeric'), $ret_or_1)) {
+          return self.$d()
+        } else {
+          
+          try {
+            
+            $b = other.$coerce(self), $a = $to_ary($b), (l = ($a[0] == null ? nil : $a[0])), (r = ($a[1] == null ? nil : $a[1])), $b;
+            return l['$<=>'](r);
+          } catch ($err) {
+            if (Opal.rescue($err, [$$('NoMethodError')])) {
+              try {
+                return nil
+              } finally { Opal.pop_exception(); }
+            } else { throw $err; }
+          };
+        }
+      }, 1);
+      
+      $def(self, '$coerce', function $$coerce(other) {
+        var $yield = $$coerce.$$p || nil, self = this, $ret_or_1 = nil;
+
+        delete $$coerce.$$p;
+        if ($eqeqeq($$('Numeric'), ($ret_or_1 = other))) {
+          return [self.$d()['$-@'](), self.$d()]
+        } else {
+          return $send2(self, $find_super(self, 'coerce', $$coerce, false, true), 'coerce', [other], $yield)
+        }
+      }, 1);
+      return $def(self, '$to_f', function $$to_f() {
+        var self = this;
+
+        
+        if ($eqeq(self.d, 0)) {
+          return 0
+        };
+        if ($truthy($rb_gt(self.d, 0))) {
+          return $$$($$('Float'), 'INFINITY')
+        } else {
+          return $$$($$('Float'), 'INFINITY')['$-@']()
+        };
+      }, 0);
+    })($nesting[0], $$('Numeric'), $nesting)
+  })($nesting[0], null, $nesting)
+};
+
+Opal.modules["date/date_time"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $def = Opal.def, $alias = Opal.alias, $rb_divide = Opal.rb_divide, $rb_times = Opal.rb_times, $rb_plus = Opal.rb_plus, $rb_minus = Opal.rb_minus, $truthy = Opal.truthy;
+
+  Opal.add_stubs('wrap,now,parse,new,def_delegators,/,usec,gmt_offset,*,+,-,is_a?,clone,_parse_offset,dup,year,month,day');
   return (function($base, $super, $parent_nesting) {
+    var self = $klass($base, $super, 'DateTime');
+
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
+
+    $proto.date = nil;
+    
+    (function(self, $parent_nesting) {
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+      
+      
+      $def(self, '$now', function $$now() {
+        var self = this;
+
+        return self.$wrap($$('Time').$now())
+      }, 0);
+      return $def(self, '$parse', function $$parse(str) {
+        var self = this;
+
+        return self.$wrap($$('Time').$parse(str))
+      }, 1);
+    })(Opal.get_singleton_class(self), $nesting);
+    
+    $def(self, '$initialize', function $$initialize(year, month, day, hours, minutes, seconds, offset, start) {
+      var self = this;
+
+      
+      
+      if (year == null) year = -4712;;
+      
+      if (month == null) month = 1;;
+      
+      if (day == null) day = 1;;
+      
+      if (hours == null) hours = 0;;
+      
+      if (minutes == null) minutes = 0;;
+      
+      if (seconds == null) seconds = 0;;
+      
+      if (offset == null) offset = 0;;
+      
+      if (start == null) start = $$('ITALY');;
+      
+      // Because of Gregorian reform calendar goes from 1582-10-04 to 1582-10-15.
+      // All days in between end up as 4 october.
+      if (year === 1582 && month === 10 && day > 4 && day < 15) {
+        day = 4;
+      }
+    ;
+      self.date = $$('Time').$new(year, month, day, hours, minutes, seconds, offset);
+      return (self.start = start);
+    }, -1);
+    self.$def_delegators("@date", "min", "hour", "sec");
+    $alias(self, "minute", "min");
+    $alias(self, "second", "sec");
+    
+    $def(self, '$sec_fraction', function $$sec_fraction() {
+      var self = this;
+
+      return $rb_divide(self.date.$usec(), $$$('Rational').$new(1000000, 1))
+    }, 0);
+    $alias(self, "second_fraction", "sec_fraction");
+    
+    $def(self, '$offset', function $$offset() {
+      var self = this;
+
+      return $rb_divide(self.date.$gmt_offset(), $rb_times(24, $$$('Rational').$new(3600, 1)))
+    }, 0);
+    
+    $def(self, '$+', function $DateTime_$plus$1(other) {
+      var self = this;
+
+      return $$$('DateTime').$wrap($rb_plus(self.date, other))
+    }, 1);
+    
+    $def(self, '$-', function $DateTime_$minus$2(other) {
+      var self = this, result = nil;
+
+      
+      if (Opal.is_a(other, $$$('Date'))) other = other.date;
+      result = $rb_minus(self.date, other);
+      if ($truthy(result['$is_a?']($$$('Time')))) {
+        return $$$('DateTime').$wrap(result)
+      } else {
+        return result
+      };
+    }, 1);
+    
+    $def(self, '$new_offset', function $$new_offset(offset) {
+      var self = this, new_date = nil;
+
+      
+      new_date = self.$clone();
+      offset = $$('Time').$_parse_offset(offset);
+      new_date.date.timezone = offset;
+      return new_date;
+    }, 1);
+    
+    $def(self, '$to_datetime', function $$to_datetime() {
+      var self = this;
+
+      return self
+    }, 0);
+    
+    $def(self, '$to_time', function $$to_time() {
+      var self = this;
+
+      return self.date.$dup()
+    }, 0);
+    return $def(self, '$to_date', function $$to_date() {
+      var self = this;
+
+      return $$('Date').$new(self.$year(), self.$month(), self.$day())
+    }, 0);
+  })($nesting[0], $$('Date'), $nesting)
+};
+
+Opal.modules["date/formatters"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $klass = Opal.klass, $hash2 = Opal.hash2, $send = Opal.send, $to_a = Opal.to_a, $hash = Opal.hash, $defs = Opal.defs, $alias = Opal.alias;
+
+  Opal.add_stubs('def_formatter');
+  
+  (function($base, $super, $parent_nesting) {
+    var self = $klass($base, $super, 'Date');
+
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+    
+    $defs(self, '$def_formatter', function $$def_formatter($a, $b) {
+      var $post_args, $kwargs, args, kwargs, self = this;
+
+      
+      
+      $post_args = Opal.slice.call(arguments);
+      
+      $kwargs = Opal.extract_kwargs($post_args);
+      
+      if ($kwargs == null) {
+        $kwargs = $hash2([], {});
+      } else if (!$kwargs.$$is_hash) {
+        throw Opal.ArgumentError.$new('expected kwargs');
+      };
+      
+      args = $post_args;;
+      
+      kwargs = Opal.kwrestargs($kwargs, {});;
+      return $send($$('Time'), 'def_formatter', $to_a(args).concat([Opal.to_hash(kwargs).$merge($hash2(["on"], {"on": self}))]));
+    }, -1);
+    self.$def_formatter("asctime", "%c");
+    $alias(self, "ctime", "asctime");
+    self.$def_formatter("iso8601", "%F");
+    $alias(self, "xmlschema", "iso8601");
+    self.$def_formatter("rfc3339", "%FT%T%:z");
+    self.$def_formatter("rfc2822", "%a, %-d %b %Y %T %z");
+    $alias(self, "rfc822", "rfc2822");
+    self.$def_formatter("httpdate", "%a, %d %b %Y %T GMT", $hash2(["utc"], {"utc": true}));
+    self.$def_formatter("jisx0301", "%J");
+    return $alias(self, "to_s", "iso8601");
+  })($nesting[0], null, $nesting);
+  return (function($base, $super) {
+    var self = $klass($base, $super, 'DateTime');
+
+    
+    
+    self.$def_formatter("xmlschema", "%FT%T", $hash2(["fractions", "tz_format"], {"fractions": true, "tz_format": "%:z"}));
+    $alias(self, "iso8601", "xmlschema");
+    $alias(self, "rfc3339", "xmlschema");
+    self.$def_formatter("jisx0301", "%JT%T", $hash2(["fractions", "tz_format"], {"fractions": true, "tz_format": "%:z"}));
+    $alias(self, "to_s", "xmlschema");
+    return self.$def_formatter("zone", "%:z");
+  })($nesting[0], $$('Date'));
+};
+
+Opal.modules["date"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $const_set = Opal.const_set, $rb_plus = Opal.rb_plus, $def = Opal.def, $send = Opal.send, $alias = Opal.alias, $rb_minus = Opal.rb_minus, $truthy = Opal.truthy, $rb_lt = Opal.rb_lt, $rb_times = Opal.rb_times, $defs = Opal.defs;
+
+  Opal.add_stubs('require,include,extend,new,-@,+,allocate,join,compact,map,to_proc,downcase,wrap,raise,attr_reader,<=>,jd,===,<<,prev_month,dup,def_delegators,clone,prev_day,next_day,_days_in_month,class,-,year,month,day,prev_year,to_s,strftime,to_i,<,*,reverse,step,abs,each');
+  
+  self.$require("forwardable");
+  self.$require("date/infinity");
+  self.$require("time");
+  (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Date');
 
-    var $nesting = [self].concat($parent_nesting), $Date_initialize$16, $Date_$minus$17, $Date_$plus$18, $Date_$lt$19, $Date_$lt_eq$20, $Date_$gt$21, $Date_$gt_eq$22, $Date_$lt_eq_gt$23, $Date_$gt$gt$24, $Date_$lt$lt$25, $Date_clone$26, $Date_day$27, $Date_friday$ques$28, $Date_jd$29, $Date_julian$ques$30, $Date_monday$ques$31, $Date_month$32, $Date_next$33, $Date_next_day$34, $Date_next_month$35, $Date_next_year$36, $Date_prev_day$37, $Date_prev_month$38, $Date_prev_year$39, $Date_saturday$ques$40, $Date_strftime$41, $Date_sunday$ques$42, $Date_thursday$ques$43, $Date_to_s$44, $Date_to_time$45, $Date_to_n$46, $Date_tuesday$ques$47, $Date_step$48, $Date_upto$51, $Date_downto$52, $Date_wday$53, $Date_wednesday$ques$54, $Date_year$55, $Date_cwday$56, $Date_cweek$57;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
+
+    $proto.date = $proto.start = nil;
+    
+    self.$include($$('Comparable'));
+    self.$extend($$('Forwardable'));
+    $const_set($nesting[0], 'JULIAN', $$('Infinity').$new());
+    $const_set($nesting[0], 'GREGORIAN', $$('Infinity').$new()['$-@']());
+    $const_set($nesting[0], 'ITALY', 2299161);
+    $const_set($nesting[0], 'ENGLAND', 2361222);
+    $const_set($nesting[0], 'MONTHNAMES', $rb_plus([nil], ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"]));
+    $const_set($nesting[0], 'ABBR_MONTHNAMES', ["jan", "feb", "mar", "apr", "may", "jun", "jul", "aug", "sep", "oct", "nov", "dec"]);
+    $const_set($nesting[0], 'DAYNAMES', ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"]);
+    $const_set($nesting[0], 'ABBR_DAYNAMES', ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"]);
+    (function(self, $parent_nesting) {
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+      
+      
+      $def(self, '$wrap', function $$wrap(native$) {
+        var self = this, instance = nil;
+
+        
+        instance = self.$allocate();
+        instance.start = $$('ITALY');
+        instance.date = native$;
+        return instance;
+      }, 1);
+      
+      $def(self, '$parse', function $$parse(string, comp) {
+        var self = this;
+
+        
+        
+        if (comp == null) comp = true;;
+        
+        var current_date = new Date();
+
+        var current_day = current_date.getDate(),
+            current_month = current_date.getMonth(),
+            current_year = current_date.getFullYear(),
+            current_wday = current_date.getDay(),
+            full_month_name_regexp = $$('MONTHNAMES').$compact().$join("|");
+
+        function match1(match) { return match[1]; }
+        function match2(match) { return match[2]; }
+        function match3(match) { return match[3]; }
+        function match4(match) { return match[4]; }
+
+        // Converts passed short year (0..99)
+        // to a 4-digits year in the range (1969..2068)
+        function fromShortYear(fn) {
+          return function(match) {
+            var short_year = fn(match);
+
+            if (short_year >= 69) {
+              short_year += 1900;
+            } else {
+              short_year += 2000;
+            }
+            return short_year;
+          }
+        }
+
+        // Converts month abbr (nov) to a month number
+        function fromMonthAbbr(fn) {
+          return function(match) {
+            var abbr = fn(match).toLowerCase();
+            return $$('ABBR_MONTHNAMES').indexOf(abbr) + 1;
+          }
+        }
+
+        function toInt(fn) {
+          return function(match) {
+            var value = fn(match);
+            return parseInt(value, 10);
+          }
+        }
+
+        // Depending on the 'comp' value appends 20xx to a passed year
+        function to2000(fn) {
+          return function(match) {
+            var value = fn(match);
+            if (comp) {
+              return value + 2000;
+            } else {
+              return value;
+            }
+          }
+        }
+
+        // Converts passed week day name to a day number
+        function fromDayName(fn) {
+          return function(match) {
+            var dayname = fn(match),
+                wday = $send($$('DAYNAMES'), 'map', [], "downcase".$to_proc()).indexOf((dayname).$downcase());
+
+            return current_day - current_wday + wday;
+          }
+        }
+
+        // Converts passed month name to a month number
+        function fromFullMonthName(fn) {
+          return function(match) {
+            var month_name = fn(match);
+            return $send($$('MONTHNAMES').$compact(), 'map', [], "downcase".$to_proc()).indexOf((month_name).$downcase()) + 1;
+          }
+        }
+
+        var rules = [
+          {
+            // DD as month day number
+            regexp: /^(\d{2})$/,
+            year: current_year,
+            month: current_month,
+            day: toInt(match1)
+          },
+          {
+            // DDD as year day number
+            regexp: /^(\d{3})$/,
+            year: current_year,
+            month: 0,
+            day: toInt(match1)
+          },
+          {
+            // MMDD as month and day
+            regexp: /^(\d{2})(\d{2})$/,
+            year: current_year,
+            month: toInt(match1),
+            day: toInt(match2)
+          },
+          {
+            // YYDDD as year and day number in 1969--2068
+            regexp: /^(\d{2})(\d{3})$/,
+            year: fromShortYear(toInt(match1)),
+            month: 0,
+            day: toInt(match2)
+          },
+          {
+            // YYMMDD as year, month and day in 1969--2068
+            regexp: /^(\d{2})(\d{2})(\d{2})$/,
+            year: fromShortYear(toInt(match1)),
+            month: toInt(match2),
+            day: toInt(match3)
+          },
+          {
+            // YYYYDDD as year and day number
+            regexp: /^(\d{4})(\d{3})$/,
+            year: toInt(match1),
+            month: 0,
+            day: toInt(match2)
+          },
+          {
+            // YYYYMMDD as year, month and day number
+            regexp: /^(\d{4})(\d{2})(\d{2})$/,
+            year: toInt(match1),
+            month: toInt(match2),
+            day: toInt(match3)
+          },
+          {
+            // mmm YYYY
+            regexp: /^([a-z]{3})[\s\.\/\-](\d{3,4})$/,
+            year: toInt(match2),
+            month: fromMonthAbbr(match1),
+            day: 1
+          },
+          {
+            // DD mmm YYYY
+            regexp: /^(\d{1,2})[\s\.\/\-]([a-z]{3})[\s\.\/\-](\d{3,4})$/i,
+            year: toInt(match3),
+            month: fromMonthAbbr(match2),
+            day: toInt(match1)
+          },
+          {
+            // mmm DD YYYY
+            regexp: /^([a-z]{3})[\s\.\/\-](\d{1,2})[\s\.\/\-](\d{3,4})$/i,
+            year: toInt(match3),
+            month: fromMonthAbbr(match1),
+            day: toInt(match2)
+          },
+          {
+            // YYYY mmm DD
+            regexp: /^(\d{3,4})[\s\.\/\-]([a-z]{3})[\s\.\/\-](\d{1,2})$/i,
+            year: toInt(match1),
+            month: fromMonthAbbr(match2),
+            day: toInt(match3)
+          },
+          {
+            // YYYY-MM-DD YYYY/MM/DD YYYY.MM.DD
+            regexp: /^(\-?\d{3,4})[\s\.\/\-](\d{1,2})[\s\.\/\-](\d{1,2})$/,
+            year: toInt(match1),
+            month: toInt(match2),
+            day: toInt(match3)
+          },
+          {
+            // YY-MM-DD
+            regexp: /^(\d{2})[\s\.\/\-](\d{1,2})[\s\.\/\-](\d{1,2})$/,
+            year: to2000(toInt(match1)),
+            month: toInt(match2),
+            day: toInt(match3)
+          },
+          {
+            // DD-MM-YYYY
+            regexp: /^(\d{1,2})[\s\.\/\-](\d{1,2})[\s\.\/\-](\-?\d{3,4})$/,
+            year: toInt(match3),
+            month: toInt(match2),
+            day: toInt(match1)
+          },
+          {
+            // ddd
+            regexp: new RegExp("^(" + $$('DAYNAMES').$join("|") + ")$", 'i'),
+            year: current_year,
+            month: current_month,
+            day: fromDayName(match1)
+          },
+          {
+            // monthname daynumber YYYY
+            regexp: new RegExp("^(" + full_month_name_regexp + ")[\\s\\.\\/\\-](\\d{1,2})(th|nd|rd)[\\s\\.\\/\\-](\\-?\\d{3,4})$", "i"),
+            year: toInt(match4),
+            month: fromFullMonthName(match1),
+            day: toInt(match2)
+          },
+          {
+            // monthname daynumber
+            regexp: new RegExp("^(" + full_month_name_regexp + ")[\\s\\.\\/\\-](\\d{1,2})(th|nd|rd)", "i"),
+            year: current_year,
+            month: fromFullMonthName(match1),
+            day: toInt(match2)
+          },
+          {
+            // daynumber monthname YYYY
+            regexp: new RegExp("^(\\d{1,2})(th|nd|rd)[\\s\\.\\/\\-](" + full_month_name_regexp + ")[\\s\\.\\/\\-](\\-?\\d{3,4})$", "i"),
+            year: toInt(match4),
+            month: fromFullMonthName(match3),
+            day: toInt(match1)
+          },
+          {
+            // YYYY monthname daynumber
+            regexp: new RegExp("^(\\-?\\d{3,4})[\\s\\.\\/\\-](" + full_month_name_regexp + ")[\\s\\.\\/\\-](\\d{1,2})(th|nd|rd)$", "i"),
+            year: toInt(match1),
+            month: fromFullMonthName(match2),
+            day: toInt(match3)
+          }
+        ]
+
+        var rule, i, match;
+
+        for (i = 0; i < rules.length; i++) {
+          rule = rules[i];
+          match = rule.regexp.exec(string);
+          if (match) {
+            var year = rule.year;
+            if (typeof(year) === 'function') {
+              year = year(match);
+            }
+
+            var month = rule.month;
+            if (typeof(month) === 'function') {
+              month = month(match) - 1
+            }
+
+            var day = rule.day;
+            if (typeof(day) === 'function') {
+              day = day(match);
+            }
+
+            var result = new Date(year, month, day);
+
+            // an edge case, JS can't handle 'new Date(1)', minimal year is 1970
+            if (year >= 0 && year <= 1970) {
+              result.setFullYear(year);
+            }
+
+            return self.$wrap(result);
+          }
+        }
+      ;
+        return self.$raise($$('ArgumentError'), "invalid date");
+      }, -2);
+      
+      $def(self, '$today', function $$today() {
+        var self = this;
+
+        return self.$wrap(new Date())
+      }, 0);
+      
+      $def(self, '$gregorian_leap?', function $gregorian_leap$ques$1(year) {
+        
+        return (new Date(year, 1, 29).getMonth()-1) === 0
+      }, 1);
+      return $alias(self, "civil", "new");
+    })(Opal.get_singleton_class(self), $nesting);
+    
+    $def(self, '$initialize', function $$initialize(year, month, day, start) {
+      var self = this;
+
+      
+      
+      if (year == null) year = -4712;;
+      
+      if (month == null) month = 1;;
+      
+      if (day == null) day = 1;;
+      
+      if (start == null) start = $$('ITALY');;
+      
+      // Because of Gregorian reform calendar goes from 1582-10-04 to 1582-10-15.
+      // All days in between end up as 4 october.
+      if (year === 1582 && month === 10 && day > 4 && day < 15) {
+        day = 4;
+      }
+    ;
+      self.date = new Date(year, month - 1, day);
+      return (self.start = start);
+    }, -1);
+    self.$attr_reader("start");
+    
+    $def(self, '$<=>', function $Date_$lt_eq_gt$2(other) {
+      var self = this;
+
+      
+      if (other.$$is_number) {
+        return self.$jd()['$<=>'](other)
+      }
+
+      if ($$$('Date')['$==='](other)) {
+        var a = self.date, b = other.date;
+        if (!Opal.is_a(self, $$$('DateTime'))) a.setHours(0, 0, 0, 0);
+        if (!Opal.is_a(other, $$$('DateTime'))) b.setHours(0, 0, 0, 0);
+
+        if (a < b) {
+          return -1;
+        }
+        else if (a > b) {
+          return 1;
+        }
+        else {
+          return 0;
+        }
+      } else {
+        return nil;
+      }
+    
+    }, 1);
+    
+    $def(self, '$>>', function $Date_$gt$gt$3(n) {
+      var self = this;
+
+      
+      if (!n.$$is_number) self.$raise($$$('TypeError'));
+      return self['$<<'](n['$-@']());
+    }, 1);
+    
+    $def(self, '$<<', function $Date_$lt$lt$4(n) {
+      var self = this;
+
+      
+      if (!n.$$is_number) self.$raise($$$('TypeError'));
+      return self.$prev_month(n);
+    }, 1);
+    
+    $def(self, '$clone', function $$clone() {
+      var self = this, date = nil;
+
+      
+      date = $$('Date').$wrap(self.date.$dup());
+      date.start = self.start;
+      return date;
+    }, 0);
+    self.$def_delegators("@date", "sunday?", "monday?", "tuesday?", "wednesday?", "thursday?", "friday?", "saturday?", "day", "month", "year", "wday", "yday");
+    $alias(self, "mday", "day");
+    $alias(self, "mon", "month");
+    
+    $def(self, '$jd', function $$jd() {
+      var self = this;
+
+      
+    //Adapted from http://www.physics.sfasu.edu/astro/javascript/julianday.html
+
+    var mm = self.date.getMonth() + 1,
+        dd = self.date.getDate(),
+        yy = self.date.getFullYear(),
+        hr = 12, mn = 0, sc = 0,
+        ggg, s, a, j1, jd;
+
+    hr = hr + (mn / 60) + (sc/3600);
+
+    ggg = 1;
+    if (yy <= 1585) {
+      ggg = 0;
+    }
+
+    jd = -1 * Math.floor(7 * (Math.floor((mm + 9) / 12) + yy) / 4);
+
+    s = 1;
+    if ((mm - 9) < 0) {
+      s =- 1;
+    }
+
+    a = Math.abs(mm - 9);
+    j1 = Math.floor(yy + s * Math.floor(a / 7));
+    j1 = -1 * Math.floor((Math.floor(j1 / 100) + 1) * 3 / 4);
+
+    jd = jd + Math.floor(275 * mm / 9) + dd + (ggg * j1);
+    jd = jd + 1721027 + 2 * ggg + 367 * yy - 0.5;
+    jd = jd + (hr / 24);
+
+    return jd;
+    
+    }, 0);
+    
+    $def(self, '$julian?', function $Date_julian$ques$5() {
+      var self = this;
+
+      return self.date < new Date(1582, 10 - 1, 15, 12)
+    }, 0);
+    
+    $def(self, '$new_start', function $$new_start(start) {
+      var self = this, new_date = nil;
+
+      
+      new_date = self.$clone();
+      new_date.start = start;
+      return new_date;
+    }, 1);
+    
+    $def(self, '$next', function $$next() {
+      var self = this;
+
+      return $rb_plus(self, 1)
+    }, 0);
+    
+    $def(self, '$-', function $Date_$minus$6(date) {
+      var self = this;
+
+      
+      
+      if (date.date) {
+        return Math.round((self.date - date.date) / (1000 * 60 * 60 * 24));
+      }
+    ;
+      return self.$prev_day(date);
+    }, 1);
+    
+    $def(self, '$+', function $Date_$plus$7(date) {
+      var self = this;
+
+      return self.$next_day(date)
+    }, 1);
+    
+    $def(self, '$prev_day', function $$prev_day(n) {
+      var self = this;
+
+      
+      
+      if (n == null) n = 1;;
+      
+      if (n.$$is_number) {
+        var result = self.$clone();
+        result.date.setDate(self.date.getDate() - n);
+        return result;
+      }
+      else {
+        self.$raise($$$('TypeError'));
+      }
+    ;
+    }, -1);
+    
+    $def(self, '$next_day', function $$next_day(n) {
+      var self = this;
+
+      
+      
+      if (n == null) n = 1;;
+      if (!n.$$is_number) self.$raise($$$('TypeError'));
+      return self.$prev_day(n['$-@']());
+    }, -1);
+    
+    $def(self, '$prev_month', function $$prev_month(n) {
+      var self = this;
+
+      
+      
+      if (n == null) n = 1;;
+      
+      if (!n.$$is_number) self.$raise($$$('TypeError'))
+      var result = self.$clone(), date = result.date, cur = date.getDate();
+      date.setDate(1);
+      date.setMonth(date.getMonth() - n);
+      date.setDate(Math.min(cur, $$('Date').$_days_in_month(date.getFullYear(), date.getMonth())));
+      return result;
+    ;
+    }, -1);
+    
+    $def(self, '$next_month', function $$next_month(n) {
+      var self = this;
+
+      
+      
+      if (n == null) n = 1;;
+      if (!n.$$is_number) self.$raise($$$('TypeError'));
+      return self.$prev_month(n['$-@']());
+    }, -1);
+    
+    $def(self, '$prev_year', function $$prev_year(years) {
+      var self = this;
+
+      
+      
+      if (years == null) years = 1;;
+      if (!years.$$is_number) self.$raise($$$('TypeError'));
+      return self.$class().$new($rb_minus(self.$year(), years), self.$month(), self.$day());
+    }, -1);
+    
+    $def(self, '$next_year', function $$next_year(years) {
+      var self = this;
+
+      
+      
+      if (years == null) years = 1;;
+      if (!years.$$is_number) self.$raise($$$('TypeError'));
+      return self.$prev_year(years['$-@']());
+    }, -1);
+    
+    $def(self, '$strftime', function $$strftime(format) {
+      var self = this;
+
+      
+      
+      if (format == null) format = "";;
+      
+      if (format == '') {
+        return self.$to_s();
+      }
+
+      return self.date.$strftime(format)
+    ;
+    }, -1);
+    
+    $def(self, '$to_s', function $$to_s() {
+      var self = this;
 
-    self.$$prototype.date = nil;
+      
+      var d = self.date, year = d.getFullYear(), month = d.getMonth() + 1, day = d.getDate();
+      if (month < 10) { month = '0' + month; }
+      if (day < 10) { day = '0' + day; }
+      return year + '-' + month + '-' + day;
     
-    self.$include($$($nesting, 'Comparable'));
-    (function($base, $super, $parent_nesting) {
-      var self = $klass($base, $super, 'Infinity');
+    }, 0);
+    
+    $def(self, '$to_time', function $$to_time() {
+      var self = this;
+
+      return $$('Time').$new(self.$year(), self.$month(), self.$day())
+    }, 0);
+    
+    $def(self, '$to_date', function $$to_date() {
+      var self = this;
+
+      return self
+    }, 0);
+    
+    $def(self, '$to_datetime', function $$to_datetime() {
+      var self = this;
+
+      return $$('DateTime').$new(self.$year(), self.$month(), self.$day())
+    }, 0);
+    
+    $def(self, '$to_n', function $$to_n() {
+      var self = this;
 
-      var $nesting = [self].concat($parent_nesting), $Infinity_initialize$1, $Infinity_zero$ques$2, $Infinity_finite$ques$3, $Infinity_infinite$ques$4, $Infinity_nan$ques$5, $Infinity_abs$6, $Infinity_$minus$$7, $Infinity_$plus$$8, $Infinity_$lt_eq_gt$9, $Infinity_coerce$10, $Infinity_to_f$11;
+      return self.date
+    }, 0);
+    
+    $def(self, '$step', function $$step(limit, step) {
+      var block = $$step.$$p || nil, self = this, steps_count = nil, steps = nil, result = nil;
 
-      self.$$prototype.d = nil;
+      delete $$step.$$p;
       
-      self.$include($$($nesting, 'Comparable'));
+      ;
       
-      Opal.def(self, '$initialize', $Infinity_initialize$1 = function $$initialize(d) {
-        var self = this;
+      if (step == null) step = 1;;
+      steps_count = $rb_minus(limit, self).$to_i();
+      steps = ($truthy($rb_lt($rb_times(steps_count, step), 0)) ? ([]) : ($truthy($rb_lt(steps_count, 0)) ? ($send(Opal.Range.$new(0, steps_count['$-@'](), false).$step(step.$abs()), 'map', [], "-@".$to_proc()).$reverse()) : (Opal.Range.$new(0, steps_count, false).$step(step.$abs()))));
+      result = $send(steps, 'map', [], function $$8(i){var self = $$8.$$s == null ? this : $$8.$$s;
 
         
         
-        if (d == null) {
-          d = 1;
-        };
-        return (self.d = d['$<=>'](0));
-      }, $Infinity_initialize$1.$$arity = -1);
-      self.$attr_reader("d");
-      
-      Opal.def(self, '$zero?', $Infinity_zero$ques$2 = function() {
-        var self = this;
+        if (i == null) i = nil;;
+        return $rb_plus(self, i);}, {$$arity: 1, $$s: self});
+      if ((block !== nil)) {
+        
+        $send(result, 'each', [], function $$9(i){
+          
+          
+          if (i == null) i = nil;;
+          return Opal.yield1(block, i);;}, 1);
+        return self;
+      } else {
+        return result
+      };
+    }, -2);
+    
+    $def(self, '$upto', function $$upto(max) {
+      var block = $$upto.$$p || nil, self = this;
 
-        return false
-      }, $Infinity_zero$ques$2.$$arity = 0);
+      delete $$upto.$$p;
       
-      Opal.def(self, '$finite?', $Infinity_finite$ques$3 = function() {
-        var self = this;
+      ;
+      return $send(self, 'step', [max, 1], block.$to_proc());
+    }, 1);
+    
+    $def(self, '$downto', function $$downto(min) {
+      var block = $$downto.$$p || nil, self = this;
 
-        return false
-      }, $Infinity_finite$ques$3.$$arity = 0);
+      delete $$downto.$$p;
       
-      Opal.def(self, '$infinite?', $Infinity_infinite$ques$4 = function() {
-        var self = this;
+      ;
+      return $send(self, 'step', [min, -1], block.$to_proc());
+    }, 1);
+    
+    $def(self, '$cwday', function $$cwday() {
+      var self = this;
 
-        return self.$d()['$nonzero?']()
-      }, $Infinity_infinite$ques$4.$$arity = 0);
-      
-      Opal.def(self, '$nan?', $Infinity_nan$ques$5 = function() {
-        var self = this;
+      return self.date.getDay() || 7
+    }, 0);
+    
+    $def(self, '$cweek', function $$cweek() {
+      var self = this;
 
-        return self.$d()['$zero?']()
-      }, $Infinity_nan$ques$5.$$arity = 0);
       
-      Opal.def(self, '$abs', $Infinity_abs$6 = function $$abs() {
-        var self = this;
-
-        return self.$class().$new()
-      }, $Infinity_abs$6.$$arity = 0);
+      var d = new Date(self.date);
+      d.setHours(0,0,0);
+      d.setDate(d.getDate()+4-(d.getDay()||7));
+      return Math.ceil((((d-new Date(d.getFullYear(),0,1))/8.64e7)+1)/7);
+    
+    }, 0);
+    $defs(self, '$_days_in_month', function $$_days_in_month(year, month) {
       
-      Opal.def(self, '$-@', $Infinity_$minus$$7 = function() {
-        var self = this;
-
-        return self.$class().$new(self.$d()['$-@']())
-      }, $Infinity_$minus$$7.$$arity = 0);
       
-      Opal.def(self, '$+@', $Infinity_$plus$$8 = function() {
-        var self = this;
+      var leap = ((year % 4 === 0 && year % 100 !== 0) || year % 400 === 0);
+      return [31, (leap ? 29 : 28), 31, 30, 31, 30, 31, 31, 30, 31, 30, 31][month];
+    
+    }, 2);
+    $alias(self, "eql?", "==");
+    return $alias(self, "succ", "next");
+  })($nesting[0], null, $nesting);
+  self.$require("date/date_time");
+  return self.$require("date/formatters");
+};
 
-        return self.$class().$new(self.$d()['$+@']())
-      }, $Infinity_$plus$$8.$$arity = 0);
+Opal.modules["time"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $defs = Opal.defs, $hash2 = Opal.hash2, $send = Opal.send, $eqeqeq = Opal.eqeqeq, $truthy = Opal.truthy, $rb_gt = Opal.rb_gt, $rb_plus = Opal.rb_plus, $alias = Opal.alias, $def = Opal.def;
+
+  Opal.add_stubs('define_method,===,new_offset,utc,year,month,day,getutc,strftime,>,+,def_formatter,wrap,require');
+  
+  (function($base, $super, $parent_nesting) {
+    var self = $klass($base, $super, 'Time');
+
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+    
+    $defs(self, '$parse', function $$parse(str) {
       
-      Opal.def(self, '$<=>', $Infinity_$lt_eq_gt$9 = function(other) {
-        var $a, $b, self = this, $case = nil, l = nil, r = nil;
+      return new Date(Date.parse(str));
+    }, 1);
+    $defs(self, '$def_formatter', function $$def_formatter(name, format, $kwargs) {
+      var on_utc, utc_tz, tz_format, fractions, on, self = this;
 
-        return (function() {$case = other;
-        if ($$($nesting, 'Infinity')['$===']($case)) {return self.$d()['$<=>'](other.$d())}
-        else if ($$($nesting, 'Numeric')['$===']($case)) {return self.$d()}
-        else {
-        try {
-          
-          $b = other.$coerce(self), $a = Opal.to_ary($b), (l = ($a[0] == null ? nil : $a[0])), (r = ($a[1] == null ? nil : $a[1])), $b;
-          return l['$<=>'](r);
-        } catch ($err) {
-          if (Opal.rescue($err, [$$($nesting, 'NoMethodError')])) {
-            try {
-              return nil
-            } finally { Opal.pop_exception(); }
-          } else { throw $err; }
-        };}})()
-      }, $Infinity_$lt_eq_gt$9.$$arity = 1);
-      
-      Opal.def(self, '$coerce', $Infinity_coerce$10 = function $$coerce(other) {
-        var $iter = $Infinity_coerce$10.$$p, $yield = $iter || nil, self = this, $case = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
-
-        if ($iter) $Infinity_coerce$10.$$p = null;
-        // Prepare super implicit arguments
-        for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-          $zuper[$zuper_i] = arguments[$zuper_i];
-        }
-        return (function() {$case = other;
-        if ($$($nesting, 'Numeric')['$===']($case)) {return [self.$d()['$-@'](), self.$d()]}
-        else {return $send2(self, $find_super(self, 'coerce', $Infinity_coerce$10, false, true), 'coerce', $zuper, $iter)}})()
-      }, $Infinity_coerce$10.$$arity = 1);
-      return (Opal.def(self, '$to_f', $Infinity_to_f$11 = function $$to_f() {
-        var self = this;
+      
+      
+      if ($kwargs == null) {
+        $kwargs = $hash2([], {});
+      } else if (!$kwargs.$$is_hash) {
+        throw Opal.ArgumentError.$new('expected kwargs');
+      };
+      
+      on_utc = $kwargs.$$smap["on_utc"];
+      if (on_utc == null) on_utc = false;
+      
+      utc_tz = $kwargs.$$smap["utc_tz"];
+      if (utc_tz == null) utc_tz = nil;
+      
+      tz_format = $kwargs.$$smap["tz_format"];
+      if (tz_format == null) tz_format = nil;
+      
+      fractions = $kwargs.$$smap["fractions"];
+      if (fractions == null) fractions = false;
+      
+      on = $kwargs.$$smap["on"];
+      if (on == null) on = self;
+      return $send(on, 'define_method', [name], function $$1(fdigits){var $a, $b, self = $$1.$$s == null ? this : $$1.$$s, $ret_or_2 = nil, $ret_or_1 = nil, date = nil, str = nil;
 
         
-        if (self.d['$=='](0)) {
-          return 0};
-        if ($truthy($rb_gt(self.d, 0))) {
-          return $$$($$($nesting, 'Float'), 'INFINITY')
+        
+        if (fdigits == null) fdigits = 0;;
+        if ($eqeqeq(($truthy(($ret_or_2 = (($a = $$$('::', 'DateTime', 'skip_raise')) ? 'constant' : nil))) ? ($$$('DateTime')) : ($ret_or_2)), ($ret_or_1 = self))) {
+          date = ($truthy(on_utc) ? (self.$new_offset(0)) : (self))
+        } else if ($eqeqeq(($truthy(($ret_or_2 = (($b = $$$('::', 'Date', 'skip_raise')) ? 'constant' : nil))) ? ($$$('Date')) : ($ret_or_2)), $ret_or_1)) {
+          date = $$$('Time').$utc(self.$year(), self.$month(), self.$day())
+        } else if ($eqeqeq($$$('Time'), $ret_or_1)) {
+          date = ($truthy(on_utc) ? (self.$getutc()) : (self))
         } else {
-          return $$$($$($nesting, 'Float'), 'INFINITY')['$-@']()
+          nil
         };
-      }, $Infinity_to_f$11.$$arity = 0), nil) && 'to_f';
-    })($nesting[0], $$($nesting, 'Numeric'), $nesting);
-    Opal.const_set($nesting[0], 'JULIAN', $$($nesting, 'Infinity').$new());
-    Opal.const_set($nesting[0], 'GREGORIAN', $$($nesting, 'Infinity').$new()['$-@']());
-    Opal.const_set($nesting[0], 'ITALY', 2299161);
-    Opal.const_set($nesting[0], 'ENGLAND', 2361222);
-    Opal.const_set($nesting[0], 'MONTHNAMES', $rb_plus([nil], ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"]));
-    Opal.const_set($nesting[0], 'ABBR_MONTHNAMES', ["jan", "feb", "mar", "apr", "may", "jun", "jul", "aug", "sep", "oct", "nov", "dec"]);
-    Opal.const_set($nesting[0], 'DAYNAMES', ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"]);
-    Opal.const_set($nesting[0], 'ABBR_DAYNAMES', ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"]);
+        str = date.$strftime(format);
+        if (($truthy(fractions) && ($truthy($rb_gt(fdigits, 0))))) {
+          str = $rb_plus(str, date.$strftime(".%" + (fdigits) + "N"))
+        };
+        if ($truthy(utc_tz)) {
+          str = $rb_plus(str, ($truthy(self.$utc()) ? (utc_tz) : (date.$strftime(tz_format))))
+        } else if ($truthy(tz_format)) {
+          str = $rb_plus(str, date.$strftime(tz_format))
+        };
+        return str;}, {$$arity: -1, $$s: self});
+    }, -3);
+    self.$def_formatter("rfc2822", "%a, %d %b %Y %T ", $hash2(["utc_tz", "tz_format"], {"utc_tz": "-00:00", "tz_format": "%z"}));
+    $alias(self, "rfc822", "rfc2822");
+    self.$def_formatter("httpdate", "%a, %d %b %Y %T GMT", $hash2(["on_utc"], {"on_utc": true}));
+    self.$def_formatter("xmlschema", "%FT%T", $hash2(["utc_tz", "tz_format", "fractions"], {"utc_tz": "Z", "tz_format": "%:z", "fractions": true}));
+    $alias(self, "iso8601", "xmlschema");
+    
+    $def(self, '$to_date', function $$to_date() {
+      var self = this;
+
+      return $$('Date').$wrap(self)
+    }, 0);
+    
+    $def(self, '$to_datetime', function $$to_datetime() {
+      var self = this;
+
+      return $$('DateTime').$wrap(self)
+    }, 0);
+    return $def(self, '$to_time', function $$to_time() {
+      var self = this;
+
+      return self
+    }, 0);
+  })($nesting[0], null, $nesting);
+  return self.$require("date");
+};
+
+Opal.modules["date"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $const_set = Opal.const_set, $rb_plus = Opal.rb_plus, $def = Opal.def, $send = Opal.send, $alias = Opal.alias, $rb_minus = Opal.rb_minus, $truthy = Opal.truthy, $rb_lt = Opal.rb_lt, $rb_times = Opal.rb_times, $defs = Opal.defs;
+
+  Opal.add_stubs('require,include,extend,new,-@,+,allocate,join,compact,map,to_proc,downcase,wrap,raise,attr_reader,<=>,jd,===,<<,prev_month,dup,def_delegators,clone,prev_day,next_day,_days_in_month,class,-,year,month,day,prev_year,to_s,strftime,to_i,<,*,reverse,step,abs,each');
+  
+  self.$require("forwardable");
+  self.$require("date/infinity");
+  self.$require("time");
+  (function($base, $super, $parent_nesting) {
+    var self = $klass($base, $super, 'Date');
+
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
+
+    $proto.date = $proto.start = nil;
+    
+    self.$include($$('Comparable'));
+    self.$extend($$('Forwardable'));
+    $const_set($nesting[0], 'JULIAN', $$('Infinity').$new());
+    $const_set($nesting[0], 'GREGORIAN', $$('Infinity').$new()['$-@']());
+    $const_set($nesting[0], 'ITALY', 2299161);
+    $const_set($nesting[0], 'ENGLAND', 2361222);
+    $const_set($nesting[0], 'MONTHNAMES', $rb_plus([nil], ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"]));
+    $const_set($nesting[0], 'ABBR_MONTHNAMES', ["jan", "feb", "mar", "apr", "may", "jun", "jul", "aug", "sep", "oct", "nov", "dec"]);
+    $const_set($nesting[0], 'DAYNAMES', ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"]);
+    $const_set($nesting[0], 'ABBR_DAYNAMES', ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"]);
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting), $wrap$12, $parse$13, $today$14, $gregorian_leap$ques$15;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
-      $alias(self, "civil", "new");
       
-      Opal.def(self, '$wrap', $wrap$12 = function $$wrap(native$) {
+      $def(self, '$wrap', function $$wrap(native$) {
         var self = this, instance = nil;
 
         
         instance = self.$allocate();
+        instance.start = $$('ITALY');
         instance.date = native$;
         return instance;
-      }, $wrap$12.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$parse', $parse$13 = function $$parse(string, comp) {
+      $def(self, '$parse', function $$parse(string, comp) {
         var self = this;
 
         
         
-        if (comp == null) {
-          comp = true;
-        };
+        if (comp == null) comp = true;;
         
         var current_date = new Date();
 
@@ -172,7 +1270,7 @@ Opal.modules["date"] = function(Opal) {
             current_month = current_date.getMonth(),
             current_year = current_date.getFullYear(),
             current_wday = current_date.getDay(),
-            full_month_name_regexp = $$($nesting, 'MONTHNAMES').$compact().$join("|");
+            full_month_name_regexp = $$('MONTHNAMES').$compact().$join("|");
 
         function match1(match) { return match[1]; }
         function match2(match) { return match[2]; }
@@ -198,7 +1296,7 @@ Opal.modules["date"] = function(Opal) {
         function fromMonthAbbr(fn) {
           return function(match) {
             var abbr = fn(match).toLowerCase();
-            return $$($nesting, 'ABBR_MONTHNAMES').indexOf(abbr) + 1;
+            return $$('ABBR_MONTHNAMES').indexOf(abbr) + 1;
           }
         }
 
@@ -225,7 +1323,7 @@ Opal.modules["date"] = function(Opal) {
         function fromDayName(fn) {
           return function(match) {
             var dayname = fn(match),
-                wday = $send($$($nesting, 'DAYNAMES'), 'map', [], "downcase".$to_proc()).indexOf((dayname).$downcase());
+                wday = $send($$('DAYNAMES'), 'map', [], "downcase".$to_proc()).indexOf((dayname).$downcase());
 
             return current_day - current_wday + wday;
           }
@@ -235,7 +1333,7 @@ Opal.modules["date"] = function(Opal) {
         function fromFullMonthName(fn) {
           return function(match) {
             var month_name = fn(match);
-            return $send($$($nesting, 'MONTHNAMES').$compact(), 'map', [], "downcase".$to_proc()).indexOf((month_name).$downcase()) + 1;
+            return $send($$('MONTHNAMES').$compact(), 'map', [], "downcase".$to_proc()).indexOf((month_name).$downcase()) + 1;
           }
         }
 
@@ -340,7 +1438,7 @@ Opal.modules["date"] = function(Opal) {
           },
           {
             // ddd
-            regexp: new RegExp("^(" + $$($nesting, 'DAYNAMES').$join("|") + ")$", 'i'),
+            regexp: new RegExp("^(" + $$('DAYNAMES').$join("|") + ")$", 'i'),
             year: current_year,
             month: current_month,
             day: fromDayName(match1)
@@ -407,41 +1505,34 @@ Opal.modules["date"] = function(Opal) {
           }
         }
       ;
-        return self.$raise($$($nesting, 'ArgumentError'), "invalid date");
-      }, $parse$13.$$arity = -2);
+        return self.$raise($$('ArgumentError'), "invalid date");
+      }, -2);
       
-      Opal.def(self, '$today', $today$14 = function $$today() {
+      $def(self, '$today', function $$today() {
         var self = this;
 
         return self.$wrap(new Date())
-      }, $today$14.$$arity = 0);
-      return (Opal.def(self, '$gregorian_leap?', $gregorian_leap$ques$15 = function(year) {
-        var self = this;
-
+      }, 0);
+      
+      $def(self, '$gregorian_leap?', function $gregorian_leap$ques$1(year) {
+        
         return (new Date(year, 1, 29).getMonth()-1) === 0
-      }, $gregorian_leap$ques$15.$$arity = 1), nil) && 'gregorian_leap?';
+      }, 1);
+      return $alias(self, "civil", "new");
     })(Opal.get_singleton_class(self), $nesting);
     
-    Opal.def(self, '$initialize', $Date_initialize$16 = function $$initialize(year, month, day, start) {
+    $def(self, '$initialize', function $$initialize(year, month, day, start) {
       var self = this;
 
       
       
-      if (year == null) {
-        year = -4712;
-      };
+      if (year == null) year = -4712;;
       
-      if (month == null) {
-        month = 1;
-      };
+      if (month == null) month = 1;;
       
-      if (day == null) {
-        day = 1;
-      };
+      if (day == null) day = 1;;
       
-      if (start == null) {
-        start = $$($nesting, 'ITALY');
-      };
+      if (start == null) start = $$('ITALY');;
       
       // Because of Gregorian reform calendar goes from 1582-10-04 to 1582-10-15.
       // All days in between end up as 4 october.
@@ -449,87 +1540,12 @@ Opal.modules["date"] = function(Opal) {
         day = 4;
       }
     ;
-      return (self.date = new Date(year, month - 1, day));
-    }, $Date_initialize$16.$$arity = -1);
-    
-    Opal.def(self, '$-', $Date_$minus$17 = function(date) {
-      var self = this;
-
-      
-      if (date.$$is_number) {
-        var result = self.$clone();
-        result.date.setDate(self.date.getDate() - date);
-        return result;
-      }
-      else if (date.date) {
-        return Math.round((self.date - date.date) / (1000 * 60 * 60 * 24));
-      }
-      else {
-        self.$raise($$($nesting, 'TypeError'));
-      }
-    
-    }, $Date_$minus$17.$$arity = 1);
-    
-    Opal.def(self, '$+', $Date_$plus$18 = function(date) {
-      var self = this;
-
-      
-      if (date.$$is_number) {
-        var result = self.$clone();
-        result.date.setDate(self.date.getDate() + date);
-        return result;
-      }
-      else {
-        self.$raise($$($nesting, 'TypeError'));
-      }
-    
-    }, $Date_$plus$18.$$arity = 1);
-    
-    Opal.def(self, '$<', $Date_$lt$19 = function(other) {
-      var self = this;
-
-      
-      var a = self.date, b = other.date;
-      a.setHours(0, 0, 0, 0);
-      b.setHours(0, 0, 0, 0);
-      return a < b;
-    
-    }, $Date_$lt$19.$$arity = 1);
-    
-    Opal.def(self, '$<=', $Date_$lt_eq$20 = function(other) {
-      var self = this;
-
-      
-      var a = self.date, b = other.date;
-      a.setHours(0, 0, 0, 0);
-      b.setHours(0, 0, 0, 0);
-      return a <= b;
-    
-    }, $Date_$lt_eq$20.$$arity = 1);
-    
-    Opal.def(self, '$>', $Date_$gt$21 = function(other) {
-      var self = this;
-
-      
-      var a = self.date, b = other.date;
-      a.setHours(0, 0, 0, 0);
-      b.setHours(0, 0, 0, 0);
-      return a > b;
-    
-    }, $Date_$gt$21.$$arity = 1);
-    
-    Opal.def(self, '$>=', $Date_$gt_eq$22 = function(other) {
-      var self = this;
-
-      
-      var a = self.date, b = other.date;
-      a.setHours(0, 0, 0, 0);
-      b.setHours(0, 0, 0, 0);
-      return a >= b;
-    
-    }, $Date_$gt_eq$22.$$arity = 1);
+      self.date = new Date(year, month - 1, day);
+      return (self.start = start);
+    }, -1);
+    self.$attr_reader("start");
     
-    Opal.def(self, '$<=>', $Date_$lt_eq_gt$23 = function(other) {
+    $def(self, '$<=>', function $Date_$lt_eq_gt$2(other) {
       var self = this;
 
       
@@ -537,10 +1553,10 @@ Opal.modules["date"] = function(Opal) {
         return self.$jd()['$<=>'](other)
       }
 
-      if ($$($nesting, 'Date')['$==='](other)) {
+      if ($$$('Date')['$==='](other)) {
         var a = self.date, b = other.date;
-        a.setHours(0, 0, 0, 0);
-        b.setHours(0, 0, 0, 0);
+        if (!Opal.is_a(self, $$$('DateTime'))) a.setHours(0, 0, 0, 0);
+        if (!Opal.is_a(other, $$$('DateTime'))) b.setHours(0, 0, 0, 0);
 
         if (a < b) {
           return -1;
@@ -555,56 +1571,37 @@ Opal.modules["date"] = function(Opal) {
         return nil;
       }
     
-    }, $Date_$lt_eq_gt$23.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$>>', $Date_$gt$gt$24 = function(n) {
+    $def(self, '$>>', function $Date_$gt$gt$3(n) {
       var self = this;
 
       
-      if (!n.$$is_number) {
-        self.$raise($$($nesting, 'TypeError'));
-      }
-
-      var result = self.$clone(), date = result.date, cur = date.getDate();
-      date.setDate(1);
-      date.setMonth(date.getMonth() + n);
-      date.setDate(Math.min(cur, days_in_month(date.getFullYear(), date.getMonth())));
-      return result;
-    
-    }, $Date_$gt$gt$24.$$arity = 1);
+      if (!n.$$is_number) self.$raise($$$('TypeError'));
+      return self['$<<'](n['$-@']());
+    }, 1);
     
-    Opal.def(self, '$<<', $Date_$lt$lt$25 = function(n) {
+    $def(self, '$<<', function $Date_$lt$lt$4(n) {
       var self = this;
 
       
-      if (!n.$$is_number) {
-        self.$raise($$($nesting, 'TypeError'));
-      }
-
-      return self['$>>'](-n);
-    
-    }, $Date_$lt$lt$25.$$arity = 1);
-    $alias(self, "eql?", "==");
-    
-    Opal.def(self, '$clone', $Date_clone$26 = function $$clone() {
-      var self = this;
-
-      return $$($nesting, 'Date').$wrap(new Date(self.date.getTime()))
-    }, $Date_clone$26.$$arity = 0);
-    
-    Opal.def(self, '$day', $Date_day$27 = function $$day() {
-      var self = this;
-
-      return self.date.getDate()
-    }, $Date_day$27.$$arity = 0);
+      if (!n.$$is_number) self.$raise($$$('TypeError'));
+      return self.$prev_month(n);
+    }, 1);
     
-    Opal.def(self, '$friday?', $Date_friday$ques$28 = function() {
-      var self = this;
+    $def(self, '$clone', function $$clone() {
+      var self = this, date = nil;
 
-      return self.$wday()['$=='](5)
-    }, $Date_friday$ques$28.$$arity = 0);
+      
+      date = $$('Date').$wrap(self.date.$dup());
+      date.start = self.start;
+      return date;
+    }, 0);
+    self.$def_delegators("@date", "sunday?", "monday?", "tuesday?", "wednesday?", "thursday?", "friday?", "saturday?", "day", "month", "year", "wday", "yday");
+    $alias(self, "mday", "day");
+    $alias(self, "mon", "month");
     
-    Opal.def(self, '$jd', $Date_jd$29 = function $$jd() {
+    $def(self, '$jd', function $$jd() {
       var self = this;
 
       
@@ -640,147 +1637,137 @@ Opal.modules["date"] = function(Opal) {
 
     return jd;
     
-    }, $Date_jd$29.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$julian?', $Date_julian$ques$30 = function() {
+    $def(self, '$julian?', function $Date_julian$ques$5() {
       var self = this;
 
       return self.date < new Date(1582, 10 - 1, 15, 12)
-    }, $Date_julian$ques$30.$$arity = 0);
-    
-    Opal.def(self, '$monday?', $Date_monday$ques$31 = function() {
-      var self = this;
-
-      return self.$wday()['$=='](1)
-    }, $Date_monday$ques$31.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$month', $Date_month$32 = function $$month() {
-      var self = this;
+    $def(self, '$new_start', function $$new_start(start) {
+      var self = this, new_date = nil;
 
-      return self.date.getMonth() + 1
-    }, $Date_month$32.$$arity = 0);
+      
+      new_date = self.$clone();
+      new_date.start = start;
+      return new_date;
+    }, 1);
     
-    Opal.def(self, '$next', $Date_next$33 = function $$next() {
+    $def(self, '$next', function $$next() {
       var self = this;
 
       return $rb_plus(self, 1)
-    }, $Date_next$33.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$next_day', $Date_next_day$34 = function $$next_day(n) {
+    $def(self, '$-', function $Date_$minus$6(date) {
       var self = this;
 
       
       
-      if (n == null) {
-        n = 1;
-      };
-      return $rb_plus(self, n);
-    }, $Date_next_day$34.$$arity = -1);
+      if (date.date) {
+        return Math.round((self.date - date.date) / (1000 * 60 * 60 * 24));
+      }
+    ;
+      return self.$prev_day(date);
+    }, 1);
     
-    Opal.def(self, '$next_month', $Date_next_month$35 = function $$next_month(n) {
+    $def(self, '$+', function $Date_$plus$7(date) {
       var self = this;
 
-      
-      
-      if (n == null) {
-        n = 1;
-      };
-      
-      var result = self.$clone(), date = result.date, cur = date.getDate();
-      date.setDate(1);
-      date.setMonth(date.getMonth() + n);
-      date.setDate(Math.min(cur, days_in_month(date.getFullYear(), date.getMonth())));
-      return result;
-    ;
-    }, $Date_next_month$35.$$arity = -1);
+      return self.$next_day(date)
+    }, 1);
     
-    Opal.def(self, '$next_year', $Date_next_year$36 = function $$next_year(years) {
+    $def(self, '$prev_day', function $$prev_day(n) {
       var self = this;
 
       
       
-      if (years == null) {
-        years = 1;
-      };
-      return self.$class().$new($rb_plus(self.$year(), years), self.$month(), self.$day());
-    }, $Date_next_year$36.$$arity = -1);
+      if (n == null) n = 1;;
+      
+      if (n.$$is_number) {
+        var result = self.$clone();
+        result.date.setDate(self.date.getDate() - n);
+        return result;
+      }
+      else {
+        self.$raise($$$('TypeError'));
+      }
+    ;
+    }, -1);
     
-    Opal.def(self, '$prev_day', $Date_prev_day$37 = function $$prev_day(n) {
+    $def(self, '$next_day', function $$next_day(n) {
       var self = this;
 
       
       
-      if (n == null) {
-        n = 1;
-      };
-      return $rb_minus(self, n);
-    }, $Date_prev_day$37.$$arity = -1);
+      if (n == null) n = 1;;
+      if (!n.$$is_number) self.$raise($$$('TypeError'));
+      return self.$prev_day(n['$-@']());
+    }, -1);
     
-    Opal.def(self, '$prev_month', $Date_prev_month$38 = function $$prev_month(n) {
+    $def(self, '$prev_month', function $$prev_month(n) {
       var self = this;
 
       
       
-      if (n == null) {
-        n = 1;
-      };
+      if (n == null) n = 1;;
       
+      if (!n.$$is_number) self.$raise($$$('TypeError'))
       var result = self.$clone(), date = result.date, cur = date.getDate();
       date.setDate(1);
       date.setMonth(date.getMonth() - n);
-      date.setDate(Math.min(cur, days_in_month(date.getFullYear(), date.getMonth())));
+      date.setDate(Math.min(cur, $$('Date').$_days_in_month(date.getFullYear(), date.getMonth())));
       return result;
     ;
-    }, $Date_prev_month$38.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$prev_year', $Date_prev_year$39 = function $$prev_year(years) {
+    $def(self, '$next_month', function $$next_month(n) {
       var self = this;
 
       
       
-      if (years == null) {
-        years = 1;
-      };
+      if (n == null) n = 1;;
+      if (!n.$$is_number) self.$raise($$$('TypeError'));
+      return self.$prev_month(n['$-@']());
+    }, -1);
+    
+    $def(self, '$prev_year', function $$prev_year(years) {
+      var self = this;
+
+      
+      
+      if (years == null) years = 1;;
+      if (!years.$$is_number) self.$raise($$$('TypeError'));
       return self.$class().$new($rb_minus(self.$year(), years), self.$month(), self.$day());
-    }, $Date_prev_year$39.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$saturday?', $Date_saturday$ques$40 = function() {
+    $def(self, '$next_year', function $$next_year(years) {
       var self = this;
 
-      return self.$wday()['$=='](6)
-    }, $Date_saturday$ques$40.$$arity = 0);
+      
+      
+      if (years == null) years = 1;;
+      if (!years.$$is_number) self.$raise($$$('TypeError'));
+      return self.$prev_year(years['$-@']());
+    }, -1);
     
-    Opal.def(self, '$strftime', $Date_strftime$41 = function $$strftime(format) {
+    $def(self, '$strftime', function $$strftime(format) {
       var self = this;
 
       
       
-      if (format == null) {
-        format = "";
-      };
+      if (format == null) format = "";;
       
       if (format == '') {
         return self.$to_s();
       }
 
-      return self.date.$strftime(format);
+      return self.date.$strftime(format)
     ;
-    }, $Date_strftime$41.$$arity = -1);
-    $alias(self, "succ", "next");
-    
-    Opal.def(self, '$sunday?', $Date_sunday$ques$42 = function() {
-      var self = this;
-
-      return self.$wday()['$=='](0)
-    }, $Date_sunday$ques$42.$$arity = 0);
-    
-    Opal.def(self, '$thursday?', $Date_thursday$ques$43 = function() {
-      var self = this;
-
-      return self.$wday()['$=='](4)
-    }, $Date_thursday$ques$43.$$arity = 0);
+    }, -1);
     
-    Opal.def(self, '$to_s', $Date_to_s$44 = function $$to_s() {
+    $def(self, '$to_s', function $$to_s() {
       var self = this;
 
       
@@ -789,114 +1776,86 @@ Opal.modules["date"] = function(Opal) {
       if (day < 10) { day = '0' + day; }
       return year + '-' + month + '-' + day;
     
-    }, $Date_to_s$44.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_time', $Date_to_time$45 = function $$to_time() {
+    $def(self, '$to_time', function $$to_time() {
       var self = this;
 
-      return $$($nesting, 'Time').$new(self.$year(), self.$month(), self.$day())
-    }, $Date_to_time$45.$$arity = 0);
+      return $$('Time').$new(self.$year(), self.$month(), self.$day())
+    }, 0);
     
-    Opal.def(self, '$to_n', $Date_to_n$46 = function $$to_n() {
+    $def(self, '$to_date', function $$to_date() {
       var self = this;
 
-      return self.date
-    }, $Date_to_n$46.$$arity = 0);
+      return self
+    }, 0);
     
-    Opal.def(self, '$tuesday?', $Date_tuesday$ques$47 = function() {
+    $def(self, '$to_datetime', function $$to_datetime() {
       var self = this;
 
-      return self.$wday()['$=='](2)
-    }, $Date_tuesday$ques$47.$$arity = 0);
+      return $$('DateTime').$new(self.$year(), self.$month(), self.$day())
+    }, 0);
     
-    Opal.def(self, '$step', $Date_step$48 = function $$step(limit, step) {
-      var $iter = $Date_step$48.$$p, block = $iter || nil, $$49, $$50, self = this, steps_count = nil, steps = nil, result = nil;
+    $def(self, '$to_n', function $$to_n() {
+      var self = this;
 
-      if ($iter) $Date_step$48.$$p = null;
-      
+      return self.date
+    }, 0);
+    
+    $def(self, '$step', function $$step(limit, step) {
+      var block = $$step.$$p || nil, self = this, steps_count = nil, steps = nil, result = nil;
+
+      delete $$step.$$p;
       
-      if ($iter) $Date_step$48.$$p = null;;
+      ;
       
-      if (step == null) {
-        step = 1;
-      };
+      if (step == null) step = 1;;
       steps_count = $rb_minus(limit, self).$to_i();
-      steps = (function() {if ($truthy($rb_lt($rb_times(steps_count, step), 0))) {
-        return []
-      } else if ($truthy($rb_lt(steps_count, 0))) {
-        return $send(Opal.Range.$new(0, steps_count['$-@'](), false).$step(step.$abs()), 'map', [], "-@".$to_proc()).$reverse()
-      } else {
-        return Opal.Range.$new(0, steps_count, false).$step(step.$abs())
-      }; return nil; })();
-      result = $send(steps, 'map', [], ($$49 = function(i){var self = $$49.$$s == null ? this : $$49.$$s;
+      steps = ($truthy($rb_lt($rb_times(steps_count, step), 0)) ? ([]) : ($truthy($rb_lt(steps_count, 0)) ? ($send(Opal.Range.$new(0, steps_count['$-@'](), false).$step(step.$abs()), 'map', [], "-@".$to_proc()).$reverse()) : (Opal.Range.$new(0, steps_count, false).$step(step.$abs()))));
+      result = $send(steps, 'map', [], function $$8(i){var self = $$8.$$s == null ? this : $$8.$$s;
 
         
         
-        if (i == null) {
-          i = nil;
-        };
-        return $rb_plus(self, i);}, $$49.$$s = self, $$49.$$arity = 1, $$49));
+        if (i == null) i = nil;;
+        return $rb_plus(self, i);}, {$$arity: 1, $$s: self});
       if ((block !== nil)) {
         
-        $send(result, 'each', [], ($$50 = function(i){var self = $$50.$$s == null ? this : $$50.$$s;
-
+        $send(result, 'each', [], function $$9(i){
           
           
-          if (i == null) {
-            i = nil;
-          };
-          return Opal.yield1(block, i);;}, $$50.$$s = self, $$50.$$arity = 1, $$50));
+          if (i == null) i = nil;;
+          return Opal.yield1(block, i);;}, 1);
         return self;
       } else {
         return result
       };
-    }, $Date_step$48.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$upto', $Date_upto$51 = function $$upto(max) {
-      var $iter = $Date_upto$51.$$p, block = $iter || nil, self = this;
+    $def(self, '$upto', function $$upto(max) {
+      var block = $$upto.$$p || nil, self = this;
 
-      if ($iter) $Date_upto$51.$$p = null;
+      delete $$upto.$$p;
       
-      
-      if ($iter) $Date_upto$51.$$p = null;;
+      ;
       return $send(self, 'step', [max, 1], block.$to_proc());
-    }, $Date_upto$51.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$downto', $Date_downto$52 = function $$downto(min) {
-      var $iter = $Date_downto$52.$$p, block = $iter || nil, self = this;
+    $def(self, '$downto', function $$downto(min) {
+      var block = $$downto.$$p || nil, self = this;
 
-      if ($iter) $Date_downto$52.$$p = null;
+      delete $$downto.$$p;
       
-      
-      if ($iter) $Date_downto$52.$$p = null;;
+      ;
       return $send(self, 'step', [min, -1], block.$to_proc());
-    }, $Date_downto$52.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$wday', $Date_wday$53 = function $$wday() {
-      var self = this;
-
-      return self.date.getDay()
-    }, $Date_wday$53.$$arity = 0);
-    
-    Opal.def(self, '$wednesday?', $Date_wednesday$ques$54 = function() {
-      var self = this;
-
-      return self.$wday()['$=='](3)
-    }, $Date_wednesday$ques$54.$$arity = 0);
-    
-    Opal.def(self, '$year', $Date_year$55 = function $$year() {
-      var self = this;
-
-      return self.date.getFullYear()
-    }, $Date_year$55.$$arity = 0);
-    
-    Opal.def(self, '$cwday', $Date_cwday$56 = function $$cwday() {
+    $def(self, '$cwday', function $$cwday() {
       var self = this;
 
       return self.date.getDay() || 7
-    }, $Date_cwday$56.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$cweek', $Date_cweek$57 = function $$cweek() {
+    $def(self, '$cweek', function $$cweek() {
       var self = this;
 
       
@@ -905,12 +1864,17 @@ Opal.modules["date"] = function(Opal) {
       d.setDate(d.getDate()+4-(d.getDay()||7));
       return Math.ceil((((d-new Date(d.getFullYear(),0,1))/8.64e7)+1)/7);
     
-    }, $Date_cweek$57.$$arity = 0);
-    
-    function days_in_month(year, month) {
+    }, 0);
+    $defs(self, '$_days_in_month', function $$_days_in_month(year, month) {
+      
+      
       var leap = ((year % 4 === 0 && year % 100 !== 0) || year % 400 === 0);
-      return [31, (leap ? 29 : 28), 31, 30, 31, 30, 31, 31, 30, 31, 30, 31][month]
-    }
-  ;
-  })($nesting[0], null, $nesting)
+      return [31, (leap ? 29 : 28), 31, 30, 31, 30, 31, 31, 30, 31, 30, 31][month];
+    
+    }, 2);
+    $alias(self, "eql?", "==");
+    return $alias(self, "succ", "next");
+  })($nesting[0], null, $nesting);
+  self.$require("date/date_time");
+  return self.$require("date/formatters");
 };
diff --git a/opal/master/date.min.js b/opal/master/date.min.js
index 054e8716..de8ee223 100644
--- a/opal/master/date.min.js
+++ b/opal/master/date.min.js
@@ -1 +1 @@
-Opal.modules.date=function(Opal){function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}function $rb_lt(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs<rhs:lhs["$<"](rhs)}Opal.top;var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$truthy=Opal.truthy,$alias=Opal.alias,$send=Opal.send;return Opal.add_stubs(["$include","$<=>","$attr_reader","$nonzero?","$d","$zero?","$new","$class","$-@","$+@","$===","$coerce","$==","$>","$+","$allocate","$join","$compact","$map","$to_proc","$downcase","$wrap","$raise","$clone","$jd","$>>","$wday","$year","$month","$day","$-","$to_s","$to_i","$<","$*","$reverse","$step","$abs","$each"]),function($Date_cweek$57,$Date_cwday$56){var $Date_step$48,$Date_upto$51,$Date_downto$52,$Date_cweek$57=$klass($Date_cweek$57,null,"Date"),$nesting=[$Date_cweek$57].concat($Date_cwday$56);function days_in_month(year,month){return[31,year%4==0&&year%100!=0||year%400==0?29:28,31,30,31,30,31,31,30,31,30,31][month]}$Date_cweek$57.$$prototype.date=nil,$Date_cweek$57.$include($$($nesting,"Comparable")),function($base,$Infinity_to_f$11,$Infinity_$lt_eq_gt$9){var $Infinity_coerce$10,$nesting=[$Infinity_to_f$11=$klass($base,$Infinity_to_f$11,"Infinity")].concat($Infinity_$lt_eq_gt$9);$Infinity_to_f$11.$$prototype.d=nil,$Infinity_to_f$11.$include($$($nesting,"Comparable")),Opal.def($Infinity_to_f$11,"$initialize",$Infinity_$lt_eq_gt$9=function(d){return null==d&&(d=1),this.d=d["$<=>"](0)},$Infinity_$lt_eq_gt$9.$$arity=-1),$Infinity_to_f$11.$attr_reader("d"),Opal.def($Infinity_to_f$11,"$zero?",$Infinity_$lt_eq_gt$9=function(){return!1},$Infinity_$lt_eq_gt$9.$$arity=0),Opal.def($Infinity_to_f$11,"$finite?",$Infinity_$lt_eq_gt$9=function(){return!1},$Infinity_$lt_eq_gt$9.$$arity=0),Opal.def($Infinity_to_f$11,"$infinite?",$Infinity_$lt_eq_gt$9=function(){return this.$d()["$nonzero?"]()},$Infinity_$lt_eq_gt$9.$$arity=0),Opal.def($Infinity_to_f$11,"$nan?",$Infinity_$lt_eq_gt$9=function(){return this.$d()["$zero?"]()},$Infinity_$lt_eq_gt$9.$$arity=0),Opal.def($Infinity_to_f$11,"$abs",$Infinity_$lt_eq_gt$9=function(){return this.$class().$new()},$Infinity_$lt_eq_gt$9.$$arity=0),Opal.def($Infinity_to_f$11,"$-@",$Infinity_$lt_eq_gt$9=function(){return this.$class().$new(this.$d()["$-@"]())},$Infinity_$lt_eq_gt$9.$$arity=0),Opal.def($Infinity_to_f$11,"$+@",$Infinity_$lt_eq_gt$9=function(){return this.$class().$new(this.$d()["$+@"]())},$Infinity_$lt_eq_gt$9.$$arity=0),Opal.def($Infinity_to_f$11,"$<=>",$Infinity_$lt_eq_gt$9=function(other){var $a,$case,r,self=this,l=nil;return function(){if($case=other,$$($nesting,"Infinity")["$==="]($case))return self.$d()["$<=>"](other.$d());if($$($nesting,"Numeric")["$==="]($case))return self.$d();try{return $a=other.$coerce(self),$a=Opal.to_ary($a),l=null==$a[0]?nil:$a[0],r=null==$a[1]?nil:$a[1],l["$<=>"](r)}catch($err){if(!Opal.rescue($err,[$$($nesting,"NoMethodError")]))throw $err;try{return nil}finally{Opal.pop_exception()}}}()},$Infinity_$lt_eq_gt$9.$$arity=1),Opal.def($Infinity_to_f$11,"$coerce",$Infinity_coerce$10=function(other){var $zuper_ii,$iter=$Infinity_coerce$10.$$p,self=this,$case=nil,$zuper=nil,$zuper_i=nil;for($iter&&($Infinity_coerce$10.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return $case=other,$$($nesting,"Numeric")["$==="]($case)?[self.$d()["$-@"](),self.$d()]:$send2(self,$find_super(self,"coerce",$Infinity_coerce$10,!1,!0),"coerce",$zuper,$iter)},$Infinity_coerce$10.$$arity=1),Opal.def($Infinity_to_f$11,"$to_f",$Infinity_to_f$11=function(){var lhs,rhs;return this.d["$=="](0)?0:$truthy((lhs=this.d,rhs=0,"number"==typeof lhs&&"number"==typeof rhs?rhs<lhs:lhs["$>"](rhs)))?$$$($$($nesting,"Float"),"INFINITY"):$$$($$($nesting,"Float"),"INFINITY")["$-@"]()},$Infinity_to_f$11.$$arity=0)}($nesting[0],$$($nesting,"Numeric"),$nesting),Opal.const_set($nesting[0],"JULIAN",$$($nesting,"Infinity").$new()),Opal.const_set($nesting[0],"GREGORIAN",$$($nesting,"Infinity").$new()["$-@"]()),Opal.const_set($nesting[0],"ITALY",2299161),Opal.const_set($nesting[0],"ENGLAND",2361222),Opal.const_set($nesting[0],"MONTHNAMES",$rb_plus([nil],["January","February","March","April","May","June","July","August","September","October","November","December"])),Opal.const_set($nesting[0],"ABBR_MONTHNAMES",["jan","feb","mar","apr","may","jun","jul","aug","sep","oct","nov","dec"]),Opal.const_set($nesting[0],"DAYNAMES",["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"]),Opal.const_set($nesting[0],"ABBR_DAYNAMES",["Sun","Mon","Tue","Wed","Thu","Fri","Sat"]),function($gregorian_leap$ques$15,$today$14){var $nesting=[$gregorian_leap$ques$15].concat($today$14);$alias($gregorian_leap$ques$15,"civil","new"),Opal.def($gregorian_leap$ques$15,"$wrap",$today$14=function(native$){var instance=nil;return(instance=this.$allocate()).date=native$,instance},$today$14.$$arity=1),Opal.def($gregorian_leap$ques$15,"$parse",$today$14=function(string,comp){null==comp&&(comp=!0);var full_month_name_regexp=new Date,current_day=full_month_name_regexp.getDate(),current_month=full_month_name_regexp.getMonth(),current_year=full_month_name_regexp.getFullYear(),current_wday=full_month_name_regexp.getDay(),full_month_name_regexp=$$($nesting,"MONTHNAMES").$compact().$join("|");function match1(match){return match[1]}function match2(match){return match[2]}function match3(match){return match[3]}function match4(match){return match[4]}function fromShortYear(fn){return function(short_year){short_year=fn(short_year);return short_year+=69<=short_year?1900:2e3}}function fromMonthAbbr(fn){return function(abbr){abbr=fn(abbr).toLowerCase();return $$($nesting,"ABBR_MONTHNAMES").indexOf(abbr)+1}}function toInt(fn){return function(value){value=fn(value);return parseInt(value,10)}}function fromFullMonthName(fn){return function(month_name){month_name=fn(month_name);return $send($$($nesting,"MONTHNAMES").$compact(),"map",[],"downcase".$to_proc()).indexOf(month_name.$downcase())+1}}for(var fn,match,rules=[{regexp:/^(\d{2})$/,year:current_year,month:current_month,day:toInt(match1)},{regexp:/^(\d{3})$/,year:current_year,month:0,day:toInt(match1)},{regexp:/^(\d{2})(\d{2})$/,year:current_year,month:toInt(match1),day:toInt(match2)},{regexp:/^(\d{2})(\d{3})$/,year:fromShortYear(toInt(match1)),month:0,day:toInt(match2)},{regexp:/^(\d{2})(\d{2})(\d{2})$/,year:fromShortYear(toInt(match1)),month:toInt(match2),day:toInt(match3)},{regexp:/^(\d{4})(\d{3})$/,year:toInt(match1),month:0,day:toInt(match2)},{regexp:/^(\d{4})(\d{2})(\d{2})$/,year:toInt(match1),month:toInt(match2),day:toInt(match3)},{regexp:/^([a-z]{3})[\s\.\/\-](\d{3,4})$/,year:toInt(match2),month:fromMonthAbbr(match1),day:1},{regexp:/^(\d{1,2})[\s\.\/\-]([a-z]{3})[\s\.\/\-](\d{3,4})$/i,year:toInt(match3),month:fromMonthAbbr(match2),day:toInt(match1)},{regexp:/^([a-z]{3})[\s\.\/\-](\d{1,2})[\s\.\/\-](\d{3,4})$/i,year:toInt(match3),month:fromMonthAbbr(match1),day:toInt(match2)},{regexp:/^(\d{3,4})[\s\.\/\-]([a-z]{3})[\s\.\/\-](\d{1,2})$/i,year:toInt(match1),month:fromMonthAbbr(match2),day:toInt(match3)},{regexp:/^(\-?\d{3,4})[\s\.\/\-](\d{1,2})[\s\.\/\-](\d{1,2})$/,year:toInt(match1),month:toInt(match2),day:toInt(match3)},{regexp:/^(\d{2})[\s\.\/\-](\d{1,2})[\s\.\/\-](\d{1,2})$/,year:(fn=toInt(match1),function(value){value=fn(value);return comp?value+2e3:value}),month:toInt(match2),day:toInt(match3)},{regexp:/^(\d{1,2})[\s\.\/\-](\d{1,2})[\s\.\/\-](\-?\d{3,4})$/,year:toInt(match3),month:toInt(match2),day:toInt(match1)},{regexp:new RegExp("^("+$$($nesting,"DAYNAMES").$join("|")+")$","i"),year:current_year,month:current_month,day:function(fn){return function(wday){wday=fn(wday),wday=$send($$($nesting,"DAYNAMES"),"map",[],"downcase".$to_proc()).indexOf(wday.$downcase());return current_day-current_wday+wday}}(match1)},{regexp:new RegExp("^("+full_month_name_regexp+")[\\s\\.\\/\\-](\\d{1,2})(th|nd|rd)[\\s\\.\\/\\-](\\-?\\d{3,4})$","i"),year:toInt(match4),month:fromFullMonthName(match1),day:toInt(match2)},{regexp:new RegExp("^("+full_month_name_regexp+")[\\s\\.\\/\\-](\\d{1,2})(th|nd|rd)","i"),year:current_year,month:fromFullMonthName(match1),day:toInt(match2)},{regexp:new RegExp("^(\\d{1,2})(th|nd|rd)[\\s\\.\\/\\-]("+full_month_name_regexp+")[\\s\\.\\/\\-](\\-?\\d{3,4})$","i"),year:toInt(match4),month:fromFullMonthName(match3),day:toInt(match1)},{regexp:new RegExp("^(\\-?\\d{3,4})[\\s\\.\\/\\-]("+full_month_name_regexp+")[\\s\\.\\/\\-](\\d{1,2})(th|nd|rd)$","i"),year:toInt(match1),month:fromFullMonthName(match2),day:toInt(match3)}],i=0;i<rules.length;i++)if(match=(result=rules[i]).regexp.exec(string)){var year=result.year;"function"==typeof year&&(year=year(match));var month=result.month;"function"==typeof month&&(month=month(match)-1);var result=result.day;"function"==typeof result&&(result=result(match));result=new Date(year,month,result);return 0<=year&&year<=1970&&result.setFullYear(year),this.$wrap(result)}return this.$raise($$($nesting,"ArgumentError"),"invalid date")},$today$14.$$arity=-2),Opal.def($gregorian_leap$ques$15,"$today",$today$14=function(){return this.$wrap(new Date)},$today$14.$$arity=0),Opal.def($gregorian_leap$ques$15,"$gregorian_leap?",$gregorian_leap$ques$15=function(year){return new Date(year,1,29).getMonth()-1==0},$gregorian_leap$ques$15.$$arity=1)}(Opal.get_singleton_class($Date_cweek$57),$nesting),Opal.def($Date_cweek$57,"$initialize",$Date_cwday$56=function(year,month,day,start){return null==year&&(year=-4712),null==month&&(month=1),null==day&&(day=1),null==start&&(start=$$($nesting,"ITALY")),1582===year&&10===month&&4<day&&day<15&&(day=4),this.date=new Date(year,month-1,day)},$Date_cwday$56.$$arity=-1),Opal.def($Date_cweek$57,"$-",$Date_cwday$56=function(date){if(date.$$is_number){var result=this.$clone();return result.date.setDate(this.date.getDate()-date),result}if(date.date)return Math.round((this.date-date.date)/864e5);this.$raise($$($nesting,"TypeError"))},$Date_cwday$56.$$arity=1),Opal.def($Date_cweek$57,"$+",$Date_cwday$56=function(date){if(date.$$is_number){var result=this.$clone();return result.date.setDate(this.date.getDate()+date),result}this.$raise($$($nesting,"TypeError"))},$Date_cwday$56.$$arity=1),Opal.def($Date_cweek$57,"$<",$Date_cwday$56=function(b){var a=this.date,b=b.date;return a.setHours(0,0,0,0),b.setHours(0,0,0,0),a<b},$Date_cwday$56.$$arity=1),Opal.def($Date_cweek$57,"$<=",$Date_cwday$56=function(b){var a=this.date,b=b.date;return a.setHours(0,0,0,0),b.setHours(0,0,0,0),a<=b},$Date_cwday$56.$$arity=1),Opal.def($Date_cweek$57,"$>",$Date_cwday$56=function(b){var a=this.date,b=b.date;return a.setHours(0,0,0,0),b.setHours(0,0,0,0),b<a},$Date_cwday$56.$$arity=1),Opal.def($Date_cweek$57,"$>=",$Date_cwday$56=function(b){var a=this.date,b=b.date;return a.setHours(0,0,0,0),b.setHours(0,0,0,0),b<=a},$Date_cwday$56.$$arity=1),Opal.def($Date_cweek$57,"$<=>",$Date_cwday$56=function(b){if(b.$$is_number)return this.$jd()["$<=>"](b);if($$($nesting,"Date")["$==="](b)){var a=this.date,b=b.date;return a.setHours(0,0,0,0),b.setHours(0,0,0,0),a<b?-1:b<a?1:0}return nil},$Date_cwday$56.$$arity=1),Opal.def($Date_cweek$57,"$>>",$Date_cwday$56=function(n){n.$$is_number||this.$raise($$($nesting,"TypeError"));var result=this.$clone(),date=result.date,cur=date.getDate();return date.setDate(1),date.setMonth(date.getMonth()+n),date.setDate(Math.min(cur,days_in_month(date.getFullYear(),date.getMonth()))),result},$Date_cwday$56.$$arity=1),Opal.def($Date_cweek$57,"$<<",$Date_cwday$56=function(n){return n.$$is_number||this.$raise($$($nesting,"TypeError")),this["$>>"](-n)},$Date_cwday$56.$$arity=1),$alias($Date_cweek$57,"eql?","=="),Opal.def($Date_cweek$57,"$clone",$Date_cwday$56=function(){return $$($nesting,"Date").$wrap(new Date(this.date.getTime()))},$Date_cwday$56.$$arity=0),Opal.def($Date_cweek$57,"$day",$Date_cwday$56=function(){return this.date.getDate()},$Date_cwday$56.$$arity=0),Opal.def($Date_cweek$57,"$friday?",$Date_cwday$56=function(){return this.$wday()["$=="](5)},$Date_cwday$56.$$arity=0),Opal.def($Date_cweek$57,"$jd",$Date_cwday$56=function(){var mm=this.date.getMonth()+1,dd=this.date.getDate(),yy=this.date.getFullYear(),ggg=yy<=1585?0:1,jd=-1*Math.floor(7*(Math.floor((mm+9)/12)+yy)/4),s=mm-9<0?-1:1,j1=Math.abs(mm-9),j1=Math.floor(yy+s*Math.floor(j1/7));return j1=-1*Math.floor(3*(Math.floor(j1/100)+1)/4),.5+(jd+Math.floor(275*mm/9)+dd+ggg*j1+1721027+2*ggg+367*yy-.5)},$Date_cwday$56.$$arity=0),Opal.def($Date_cweek$57,"$julian?",$Date_cwday$56=function(){return this.date<new Date(1582,9,15,12)},$Date_cwday$56.$$arity=0),Opal.def($Date_cweek$57,"$monday?",$Date_cwday$56=function(){return this.$wday()["$=="](1)},$Date_cwday$56.$$arity=0),Opal.def($Date_cweek$57,"$month",$Date_cwday$56=function(){return this.date.getMonth()+1},$Date_cwday$56.$$arity=0),Opal.def($Date_cweek$57,"$next",$Date_cwday$56=function(){return $rb_plus(this,1)},$Date_cwday$56.$$arity=0),Opal.def($Date_cweek$57,"$next_day",$Date_cwday$56=function(n){return null==n&&(n=1),$rb_plus(this,n)},$Date_cwday$56.$$arity=-1),Opal.def($Date_cweek$57,"$next_month",$Date_cwday$56=function(n){null==n&&(n=1);var result=this.$clone(),date=result.date,cur=date.getDate();return date.setDate(1),date.setMonth(date.getMonth()+n),date.setDate(Math.min(cur,days_in_month(date.getFullYear(),date.getMonth()))),result},$Date_cwday$56.$$arity=-1),Opal.def($Date_cweek$57,"$next_year",$Date_cwday$56=function(years){return null==years&&(years=1),this.$class().$new($rb_plus(this.$year(),years),this.$month(),this.$day())},$Date_cwday$56.$$arity=-1),Opal.def($Date_cweek$57,"$prev_day",$Date_cwday$56=function(n){return null==n&&(n=1),$rb_minus(this,n)},$Date_cwday$56.$$arity=-1),Opal.def($Date_cweek$57,"$prev_month",$Date_cwday$56=function(n){null==n&&(n=1);var result=this.$clone(),date=result.date,cur=date.getDate();return date.setDate(1),date.setMonth(date.getMonth()-n),date.setDate(Math.min(cur,days_in_month(date.getFullYear(),date.getMonth()))),result},$Date_cwday$56.$$arity=-1),Opal.def($Date_cweek$57,"$prev_year",$Date_cwday$56=function(years){return null==years&&(years=1),this.$class().$new($rb_minus(this.$year(),years),this.$month(),this.$day())},$Date_cwday$56.$$arity=-1),Opal.def($Date_cweek$57,"$saturday?",$Date_cwday$56=function(){return this.$wday()["$=="](6)},$Date_cwday$56.$$arity=0),Opal.def($Date_cweek$57,"$strftime",$Date_cwday$56=function(format){return null==format&&(format=""),""==format?this.$to_s():this.date.$strftime(format)},$Date_cwday$56.$$arity=-1),$alias($Date_cweek$57,"succ","next"),Opal.def($Date_cweek$57,"$sunday?",$Date_cwday$56=function(){return this.$wday()["$=="](0)},$Date_cwday$56.$$arity=0),Opal.def($Date_cweek$57,"$thursday?",$Date_cwday$56=function(){return this.$wday()["$=="](4)},$Date_cwday$56.$$arity=0),Opal.def($Date_cweek$57,"$to_s",$Date_cwday$56=function(){var day=this.date,year=day.getFullYear(),month=day.getMonth()+1,day=day.getDate();return month<10&&(month="0"+month),day<10&&(day="0"+day),year+"-"+month+"-"+day},$Date_cwday$56.$$arity=0),Opal.def($Date_cweek$57,"$to_time",$Date_cwday$56=function(){return $$($nesting,"Time").$new(this.$year(),this.$month(),this.$day())},$Date_cwday$56.$$arity=0),Opal.def($Date_cweek$57,"$to_n",$Date_cwday$56=function(){return this.date},$Date_cwday$56.$$arity=0),Opal.def($Date_cweek$57,"$tuesday?",$Date_cwday$56=function(){return this.$wday()["$=="](2)},$Date_cwday$56.$$arity=0),Opal.def($Date_cweek$57,"$step",$Date_step$48=function(lhs,step){var $$49,$$50,steps,result,rhs=$Date_step$48.$$p,block=rhs||nil,steps_count=nil;return rhs&&($Date_step$48.$$p=null),rhs&&($Date_step$48.$$p=null),null==step&&(step=1),steps_count=$rb_minus(lhs,this).$to_i(),steps=$truthy($rb_lt((rhs=step,"number"==typeof(lhs=steps_count)&&"number"==typeof rhs?lhs*rhs:lhs["$*"](rhs)),0))?[]:$truthy($rb_lt(steps_count,0))?$send(Opal.Range.$new(0,steps_count["$-@"](),!1).$step(step.$abs()),"map",[],"-@".$to_proc()).$reverse():Opal.Range.$new(0,steps_count,!1).$step(step.$abs()),result=$send(steps,"map",[],(($$49=function(i){var self=null==$$49.$$s?this:$$49.$$s;return null==i&&(i=nil),$rb_plus(self,i)}).$$s=this,$$49.$$arity=1,$$49)),block!==nil?($send(result,"each",[],(($$50=function(i){null==$$50.$$s||$$50.$$s;return null==i&&(i=nil),Opal.yield1(block,i)}).$$s=this,$$50.$$arity=1,$$50)),this):result},$Date_step$48.$$arity=-2),Opal.def($Date_cweek$57,"$upto",$Date_upto$51=function(max){var $iter=$Date_upto$51.$$p,block=$iter||nil;return $iter&&($Date_upto$51.$$p=null),$iter&&($Date_upto$51.$$p=null),$send(this,"step",[max,1],block.$to_proc())},$Date_upto$51.$$arity=1),Opal.def($Date_cweek$57,"$downto",$Date_downto$52=function(min){var $iter=$Date_downto$52.$$p,block=$iter||nil;return $iter&&($Date_downto$52.$$p=null),$iter&&($Date_downto$52.$$p=null),$send(this,"step",[min,-1],block.$to_proc())},$Date_downto$52.$$arity=1),Opal.def($Date_cweek$57,"$wday",$Date_cwday$56=function(){return this.date.getDay()},$Date_cwday$56.$$arity=0),Opal.def($Date_cweek$57,"$wednesday?",$Date_cwday$56=function(){return this.$wday()["$=="](3)},$Date_cwday$56.$$arity=0),Opal.def($Date_cweek$57,"$year",$Date_cwday$56=function(){return this.date.getFullYear()},$Date_cwday$56.$$arity=0),Opal.def($Date_cweek$57,"$cwday",$Date_cwday$56=function(){return this.date.getDay()||7},$Date_cwday$56.$$arity=0),Opal.def($Date_cweek$57,"$cweek",$Date_cweek$57=function(){var d=new Date(this.date);return d.setHours(0,0,0),d.setDate(d.getDate()+4-(d.getDay()||7)),Math.ceil(((d-new Date(d.getFullYear(),0,1))/864e5+1)/7)},$Date_cweek$57.$$arity=0)}($nesting[0],$nesting)};
+Opal.modules.forwardable=function(Opal){var self,$nesting=[],nil=Opal.nil,$module=Opal.module,$send=Opal.send,$truthy=Opal.truthy,$def=Opal.def,$to_a=Opal.to_a,$alias=Opal.alias;return Opal.add_stubs("each,respond_to?,def_instance_delegator,include?,start_with?,to_s,define_method,__send__,instance_variable_get,to_proc,def_single_delegator,define_singleton_method"),self=$module($nesting[0],"Forwardable"),$def(self,"$instance_delegate",(function(hash){return $send(hash,"each",[],(function $$1(methods,accessor){var self=null==$$1.$$s?this:$$1.$$s;return null==methods&&(methods=nil),null==accessor&&(accessor=nil),$truthy(methods["$respond_to?"]("each"))||(methods=[methods]),$send(methods,"each",[],(function $$2(method){return null==method&&(method=nil),(null==$$2.$$s?this:$$2.$$s).$def_instance_delegator(accessor,method)}),{$$arity:1,$$s:self})}),{$$arity:2,$$s:this})}),1),$def(self,"$def_instance_delegators",(function(accessor,$a){var $post_args,self=this;return $post_args=Opal.slice.call(arguments,1),$send($post_args,"each",[],(function $$3(method){var self=null==$$3.$$s?this:$$3.$$s;return null==method&&(method=nil),$truthy(["__send__","__id__"]["$include?"](method))?nil:self.$def_instance_delegator(accessor,method)}),{$$arity:1,$$s:self})}),-2),$def(self,"$def_instance_delegator",(function $$def_instance_delegator(accessor,method,ali){return delete $$def_instance_delegator.$$p,null==ali&&(ali=method),$truthy(accessor.$to_s()["$start_with?"]("@"))?$send(this,"define_method",[ali],(function $$4($a){var args,block=$$4.$$p||nil,self=null==$$4.$$s?this:$$4.$$s;return delete $$4.$$p,args=Opal.slice.call(arguments),$send(self.$instance_variable_get(accessor),"__send__",[method].concat($to_a(args)),block.$to_proc())}),{$$arity:-1,$$s:this}):$send(this,"define_method",[ali],(function $$5($a){var args,block=$$5.$$p||nil,self=null==$$5.$$s?this:$$5.$$s;return delete 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fn,rule,i,match,rules=[{regexp:/^(\d{2})$/,year:current_year,month:current_month,day:toInt(match1)},{regexp:/^(\d{3})$/,year:current_year,month:0,day:toInt(match1)},{regexp:/^(\d{2})(\d{2})$/,year:current_year,month:toInt(match1),day:toInt(match2)},{regexp:/^(\d{2})(\d{3})$/,year:fromShortYear(toInt(match1)),month:0,day:toInt(match2)},{regexp:/^(\d{2})(\d{2})(\d{2})$/,year:fromShortYear(toInt(match1)),month:toInt(match2),day:toInt(match3)},{regexp:/^(\d{4})(\d{3})$/,year:toInt(match1),month:0,day:toInt(match2)},{regexp:/^(\d{4})(\d{2})(\d{2})$/,year:toInt(match1),month:toInt(match2),day:toInt(match3)},{regexp:/^([a-z]{3})[\s\.\/\-](\d{3,4})$/,year:toInt(match2),month:fromMonthAbbr(match1),day:1},{regexp:/^(\d{1,2})[\s\.\/\-]([a-z]{3})[\s\.\/\-](\d{3,4})$/i,year:toInt(match3),month:fromMonthAbbr(match2),day:toInt(match1)},{regexp:/^([a-z]{3})[\s\.\/\-](\d{1,2})[\s\.\/\-](\d{3,4})$/i,year:toInt(match3),month:fromMonthAbbr(match1),day:toInt(match2)},{regexp:/^(\d{3,4})[\s\.\/\-]([a-z]{3})[\s\.\/\-](\d{1,2})$/i,year:toInt(match1),month:fromMonthAbbr(match2),day:toInt(match3)},{regexp:/^(\-?\d{3,4})[\s\.\/\-](\d{1,2})[\s\.\/\-](\d{1,2})$/,year:toInt(match1),month:toInt(match2),day:toInt(match3)},{regexp:/^(\d{2})[\s\.\/\-](\d{1,2})[\s\.\/\-](\d{1,2})$/,year:(fn=toInt(match1),function(match){var value=fn(match);return comp?value+2e3:value}),month:toInt(match2),day:toInt(match3)},{regexp:/^(\d{1,2})[\s\.\/\-](\d{1,2})[\s\.\/\-](\-?\d{3,4})$/,year:toInt(match3),month:toInt(match2),day:toInt(match1)},{regexp:new RegExp("^("+$$("DAYNAMES").$join("|")+")$","i"),year:current_year,month:current_month,day:function(fn){return function(match){var dayname=fn(match),wday=$send($$("DAYNAMES"),"map",[],"downcase".$to_proc()).indexOf(dayname.$downcase());return current_day-current_wday+wday}}(match1)},{regexp:new RegExp("^("+full_month_name_regexp+")[\\s\\.\\/\\-](\\d{1,2})(th|nd|rd)[\\s\\.\\/\\-](\\-?\\d{3,4})$","i"),year:toInt(match4),month:fromFullMonthName(match1),day:toInt(match2)},{regexp:new RegExp("^("+full_month_name_regexp+")[\\s\\.\\/\\-](\\d{1,2})(th|nd|rd)","i"),year:current_year,month:fromFullMonthName(match1),day:toInt(match2)},{regexp:new 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steps,result,block=$$step.$$p||nil,steps_count=nil;return delete $$step.$$p,null==step&&(step=1),steps_count=$rb_minus(limit,this).$to_i(),steps=$truthy($rb_lt($rb_times(steps_count,step),0))?[]:$truthy($rb_lt(steps_count,0))?$send(Opal.Range.$new(0,steps_count["$-@"](),!1).$step(step.$abs()),"map",[],"-@".$to_proc()).$reverse():Opal.Range.$new(0,steps_count,!1).$step(step.$abs()),result=$send(steps,"map",[],(function $$8(i){return null==i&&(i=nil),$rb_plus(null==$$8.$$s?this:$$8.$$s,i)}),{$$arity:1,$$s:this}),block!==nil?($send(result,"each",[],(function(i){return null==i&&(i=nil),Opal.yield1(block,i)}),1),this):result}),-2),$def(self,"$upto",(function $$upto(max){var block=$$upto.$$p||nil;return delete $$upto.$$p,$send(this,"step",[max,1],block.$to_proc())}),1),$def(self,"$downto",(function $$downto(min){var block=$$downto.$$p||nil;return delete $$downto.$$p,$send(this,"step",[min,-1],block.$to_proc())}),1),$def(self,"$cwday",(function(){return this.date.getDay()||7}),0),$def(self,"$cweek",(function(){var d=new Date(this.date);return d.setHours(0,0,0),d.setDate(d.getDate()+4-(d.getDay()||7)),Math.ceil(((d-new Date(d.getFullYear(),0,1))/864e5+1)/7)}),0),$defs(self,"$_days_in_month",(function(year,month){return[31,year%4==0&&year%100!=0||year%400==0?29:28,31,30,31,30,31,31,30,31,30,31][month]}),2),$alias(self,"eql?","=="),$alias(self,"succ","next")}($nesting[0],0,$nesting),self.$require("date/date_time"),self.$require("date/formatters")},Opal.modules.time=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$klass=Opal.klass,$defs=Opal.defs,$hash2=Opal.hash2,$send=Opal.send,$eqeqeq=Opal.eqeqeq,$truthy=Opal.truthy,$rb_gt=Opal.rb_gt,$rb_plus=Opal.rb_plus,$alias=Opal.alias,$def=Opal.def;return Opal.add_stubs("define_method,===,new_offset,utc,year,month,day,getutc,strftime,>,+,def_formatter,wrap,require"),function($base,$super,$parent_nesting){var self=$klass($base,null,"Time"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);$defs(self,"$parse",(function(str){return new Date(Date.parse(str))}),1),$defs(self,"$def_formatter",(function(name,format,$kwargs){var on_utc,utc_tz,tz_format,fractions,on;if(null==$kwargs)$kwargs=$hash2([],{});else if(!$kwargs.$$is_hash)throw Opal.ArgumentError.$new("expected kwargs");return null==(on_utc=$kwargs.$$smap.on_utc)&&(on_utc=!1),null==(utc_tz=$kwargs.$$smap.utc_tz)&&(utc_tz=nil),null==(tz_format=$kwargs.$$smap.tz_format)&&(tz_format=nil),null==(fractions=$kwargs.$$smap.fractions)&&(fractions=!1),null==(on=$kwargs.$$smap.on)&&(on=this),$send(on,"define_method",[name],(function $$1(fdigits){var $ret_or_1,self=null==$$1.$$s?this:$$1.$$s,$ret_or_2=nil,date=nil,str=nil;return null==fdigits&&(fdigits=0),$eqeqeq($truthy($ret_or_2=$$$("::","DateTime","skip_raise")?"constant":nil)?$$$("DateTime"):$ret_or_2,$ret_or_1=self)?date=$truthy(on_utc)?self.$new_offset(0):self:$eqeqeq($truthy($ret_or_2=$$$("::","Date","skip_raise")?"constant":nil)?$$$("Date"):$ret_or_2,$ret_or_1)?date=$$$("Time").$utc(self.$year(),self.$month(),self.$day()):$eqeqeq($$$("Time"),$ret_or_1)&&(date=$truthy(on_utc)?self.$getutc():self),str=date.$strftime(format),$truthy(fractions)&&$truthy($rb_gt(fdigits,0))&&(str=$rb_plus(str,date.$strftime(".%"+fdigits+"N"))),$truthy(utc_tz)?str=$rb_plus(str,$truthy(self.$utc())?utc_tz:date.$strftime(tz_format)):$truthy(tz_format)&&(str=$rb_plus(str,date.$strftime(tz_format))),str}),{$$arity:-1,$$s:this})}),-3),self.$def_formatter("rfc2822","%a, %d %b %Y %T ",$hash2(["utc_tz","tz_format"],{utc_tz:"-00:00",tz_format:"%z"})),$alias(self,"rfc822","rfc2822"),self.$def_formatter("httpdate","%a, %d %b %Y %T GMT",$hash2(["on_utc"],{on_utc:!0})),self.$def_formatter("xmlschema","%FT%T",$hash2(["utc_tz","tz_format","fractions"],{utc_tz:"Z",tz_format:"%:z",fractions:!0})),$alias(self,"iso8601","xmlschema"),$def(self,"$to_date",(function(){return $$("Date").$wrap(this)}),0),$def(self,"$to_datetime",(function(){return $$("DateTime").$wrap(this)}),0),$def(self,"$to_time",(function(){return this}),0)}($nesting[0],0,$nesting),self.$require("date")},Opal.modules.date=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$klass=Opal.klass,$const_set=Opal.const_set,$rb_plus=Opal.rb_plus,$def=Opal.def,$send=Opal.send,$alias=Opal.alias,$rb_minus=Opal.rb_minus,$truthy=Opal.truthy,$rb_lt=Opal.rb_lt,$rb_times=Opal.rb_times,$defs=Opal.defs;return Opal.add_stubs("require,include,extend,new,-@,+,allocate,join,compact,map,to_proc,downcase,wrap,raise,attr_reader,<=>,jd,===,<<,prev_month,dup,def_delegators,clone,prev_day,next_day,_days_in_month,class,-,year,month,day,prev_year,to_s,strftime,to_i,<,*,reverse,step,abs,each"),self.$require("forwardable"),self.$require("date/infinity"),self.$require("time"),function($base,$super,$parent_nesting){var self=$klass($base,null,"Date"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;$proto.date=$proto.start=nil,self.$include($$("Comparable")),self.$extend($$("Forwardable")),$const_set($nesting[0],"JULIAN",$$("Infinity").$new()),$const_set($nesting[0],"GREGORIAN",$$("Infinity").$new()["$-@"]()),$const_set($nesting[0],"ITALY",2299161),$const_set($nesting[0],"ENGLAND",2361222),$const_set($nesting[0],"MONTHNAMES",$rb_plus([nil],["January","February","March","April","May","June","July","August","September","October","November","December"])),$const_set($nesting[0],"ABBR_MONTHNAMES",["jan","feb","mar","apr","may","jun","jul","aug","sep","oct","nov","dec"]),$const_set($nesting[0],"DAYNAMES",["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"]),$const_set($nesting[0],"ABBR_DAYNAMES",["Sun","Mon","Tue","Wed","Thu","Fri","Sat"]),function(self,$parent_nesting){var $nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);$def(self,"$wrap",(function(native$){var instance=nil;return(instance=this.$allocate()).start=$$("ITALY"),instance.date=native$,instance}),1),$def(self,"$parse",(function(string,comp){null==comp&&(comp=!0);var current_date=new Date,current_day=current_date.getDate(),current_month=current_date.getMonth(),current_year=current_date.getFullYear(),current_wday=current_date.getDay(),full_month_name_regexp=$$("MONTHNAMES").$compact().$join("|");function match1(match){return match[1]}function match2(match){return match[2]}function match3(match){return match[3]}function match4(match){return match[4]}function fromShortYear(fn){return function(match){var short_year=fn(match);return short_year+=short_year>=69?1900:2e3}}function fromMonthAbbr(fn){return function(match){var abbr=fn(match).toLowerCase();return $$("ABBR_MONTHNAMES").indexOf(abbr)+1}}function toInt(fn){return function(match){var value=fn(match);return parseInt(value,10)}}function fromFullMonthName(fn){return function(match){var month_name=fn(match);return $send($$("MONTHNAMES").$compact(),"map",[],"downcase".$to_proc()).indexOf(month_name.$downcase())+1}}var fn,rule,i,match,rules=[{regexp:/^(\d{2})$/,year:current_year,month:current_month,day:toInt(match1)},{regexp:/^(\d{3})$/,year:current_year,month:0,day:toInt(match1)},{regexp:/^(\d{2})(\d{2})$/,year:current_year,month:toInt(match1),day:toInt(match2)},{regexp:/^(\d{2})(\d{3})$/,year:fromShortYear(toInt(match1)),month:0,day:toInt(match2)},{regexp:/^(\d{2})(\d{2})(\d{2})$/,year:fromShortYear(toInt(match1)),month:toInt(match2),day:toInt(match3)},{regexp:/^(\d{4})(\d{3})$/,year:toInt(match1),month:0,day:toInt(match2)},{regexp:/^(\d{4})(\d{2})(\d{2})$/,year:toInt(match1),month:toInt(match2),day:toInt(match3)},{regexp:/^([a-z]{3})[\s\.\/\-](\d{3,4})$/,year:toInt(match2),month:fromMonthAbbr(match1),day:1},{regexp:/^(\d{1,2})[\s\.\/\-]([a-z]{3})[\s\.\/\-](\d{3,4})$/i,year:toInt(match3),month:fromMonthAbbr(match2),day:toInt(match1)},{regexp:/^([a-z]{3})[\s\.\/\-](\d{1,2})[\s\.\/\-](\d{3,4})$/i,year:toInt(match3),month:fromMonthAbbr(match1),day:toInt(match2)},{regexp:/^(\d{3,4})[\s\.\/\-]([a-z]{3})[\s\.\/\-](\d{1,2})$/i,year:toInt(match1),month:fromMonthAbbr(match2),day:toInt(match3)},{regexp:/^(\-?\d{3,4})[\s\.\/\-](\d{1,2})[\s\.\/\-](\d{1,2})$/,year:toInt(match1),month:toInt(match2),day:toInt(match3)},{regexp:/^(\d{2})[\s\.\/\-](\d{1,2})[\s\.\/\-](\d{1,2})$/,year:(fn=toInt(match1),function(match){var value=fn(match);return comp?value+2e3:value}),month:toInt(match2),day:toInt(match3)},{regexp:/^(\d{1,2})[\s\.\/\-](\d{1,2})[\s\.\/\-](\-?\d{3,4})$/,year:toInt(match3),month:toInt(match2),day:toInt(match1)},{regexp:new RegExp("^("+$$("DAYNAMES").$join("|")+")$","i"),year:current_year,month:current_month,day:function(fn){return function(match){var dayname=fn(match),wday=$send($$("DAYNAMES"),"map",[],"downcase".$to_proc()).indexOf(dayname.$downcase());return current_day-current_wday+wday}}(match1)},{regexp:new RegExp("^("+full_month_name_regexp+")[\\s\\.\\/\\-](\\d{1,2})(th|nd|rd)[\\s\\.\\/\\-](\\-?\\d{3,4})$","i"),year:toInt(match4),month:fromFullMonthName(match1),day:toInt(match2)},{regexp:new RegExp("^("+full_month_name_regexp+")[\\s\\.\\/\\-](\\d{1,2})(th|nd|rd)","i"),year:current_year,month:fromFullMonthName(match1),day:toInt(match2)},{regexp:new RegExp("^(\\d{1,2})(th|nd|rd)[\\s\\.\\/\\-]("+full_month_name_regexp+")[\\s\\.\\/\\-](\\-?\\d{3,4})$","i"),year:toInt(match4),month:fromFullMonthName(match3),day:toInt(match1)},{regexp:new RegExp("^(\\-?\\d{3,4})[\\s\\.\\/\\-]("+full_month_name_regexp+")[\\s\\.\\/\\-](\\d{1,2})(th|nd|rd)$","i"),year:toInt(match1),month:fromFullMonthName(match2),day:toInt(match3)}];for(i=0;i<rules.length;i++)if(match=(rule=rules[i]).regexp.exec(string)){var year=rule.year;"function"==typeof year&&(year=year(match));var month=rule.month;"function"==typeof month&&(month=month(match)-1);var day=rule.day;"function"==typeof day&&(day=day(match));var result=new Date(year,month,day);return year>=0&&year<=1970&&result.setFullYear(year),this.$wrap(result)}return this.$raise($$("ArgumentError"),"invalid date")}),-2),$def(self,"$today",(function(){return this.$wrap(new Date)}),0),$def(self,"$gregorian_leap?",(function(year){return new Date(year,1,29).getMonth()-1==0}),1),$alias(self,"civil","new")}(Opal.get_singleton_class(self),$nesting),$def(self,"$initialize",(function(year,month,day,start){return null==year&&(year=-4712),null==month&&(month=1),null==day&&(day=1),null==start&&(start=$$("ITALY")),1582===year&&10===month&&day>4&&day<15&&(day=4),this.date=new Date(year,month-1,day),this.start=start}),-1),self.$attr_reader("start"),$def(self,"$<=>",(function(other){if(other.$$is_number)return this.$jd()["$<=>"](other);if($$$("Date")["$==="](other)){var a=this.date,b=other.date;return Opal.is_a(this,$$$("DateTime"))||a.setHours(0,0,0,0),Opal.is_a(other,$$$("DateTime"))||b.setHours(0,0,0,0),a<b?-1:a>b?1:0}return nil}),1),$def(self,"$>>",(function(n){return n.$$is_number||this.$raise($$$("TypeError")),this["$<<"](n["$-@"]())}),1),$def(self,"$<<",(function(n){return n.$$is_number||this.$raise($$$("TypeError")),this.$prev_month(n)}),1),$def(self,"$clone",(function(){var date=nil;return(date=$$("Date").$wrap(this.date.$dup())).start=this.start,date}),0),self.$def_delegators("@date","sunday?","monday?","tuesday?","wednesday?","thursday?","friday?","saturday?","day","month","year","wday","yday"),$alias(self,"mday","day"),$alias(self,"mon","month"),$def(self,"$jd",(function(){var ggg,s,a,j1,jd,mm=this.date.getMonth()+1,dd=this.date.getDate(),yy=this.date.getFullYear(),hr=12;return hr=hr+0+0,ggg=1,yy<=1585&&(ggg=0),jd=-1*Math.floor(7*(Math.floor((mm+9)/12)+yy)/4),s=1,mm-9<0&&(s=-1),a=Math.abs(mm-9),j1=Math.floor(yy+s*Math.floor(a/7)),j1=-1*Math.floor(3*(Math.floor(j1/100)+1)/4),jd=(jd=jd+Math.floor(275*mm/9)+dd+ggg*j1)+1721027+2*ggg+367*yy-.5,jd+=hr/24}),0),$def(self,"$julian?",(function(){return this.date<new Date(1582,9,15,12)}),0),$def(self,"$new_start",(function(start){var new_date=nil;return(new_date=this.$clone()).start=start,new_date}),1),$def(self,"$next",(function(){return $rb_plus(this,1)}),0),$def(self,"$-",(function(date){return date.date?Math.round((this.date-date.date)/864e5):this.$prev_day(date)}),1),$def(self,"$+",(function(date){return this.$next_day(date)}),1),$def(self,"$prev_day",(function(n){if(null==n&&(n=1),n.$$is_number){var result=this.$clone();return result.date.setDate(this.date.getDate()-n),result}this.$raise($$$("TypeError"))}),-1),$def(self,"$next_day",(function(n){return null==n&&(n=1),n.$$is_number||this.$raise($$$("TypeError")),this.$prev_day(n["$-@"]())}),-1),$def(self,"$prev_month",(function(n){null==n&&(n=1),n.$$is_number||this.$raise($$$("TypeError"));var result=this.$clone(),date=result.date,cur=date.getDate();return date.setDate(1),date.setMonth(date.getMonth()-n),date.setDate(Math.min(cur,$$("Date").$_days_in_month(date.getFullYear(),date.getMonth()))),result}),-1),$def(self,"$next_month",(function(n){return null==n&&(n=1),n.$$is_number||this.$raise($$$("TypeError")),this.$prev_month(n["$-@"]())}),-1),$def(self,"$prev_year",(function(years){return null==years&&(years=1),years.$$is_number||this.$raise($$$("TypeError")),this.$class().$new($rb_minus(this.$year(),years),this.$month(),this.$day())}),-1),$def(self,"$next_year",(function(years){return null==years&&(years=1),years.$$is_number||this.$raise($$$("TypeError")),this.$prev_year(years["$-@"]())}),-1),$def(self,"$strftime",(function(format){return null==format&&(format=""),""==format?this.$to_s():this.date.$strftime(format)}),-1),$def(self,"$to_s",(function(){var d=this.date,year=d.getFullYear(),month=d.getMonth()+1,day=d.getDate();return month<10&&(month="0"+month),day<10&&(day="0"+day),year+"-"+month+"-"+day}),0),$def(self,"$to_time",(function(){return $$("Time").$new(this.$year(),this.$month(),this.$day())}),0),$def(self,"$to_date",(function(){return this}),0),$def(self,"$to_datetime",(function(){return $$("DateTime").$new(this.$year(),this.$month(),this.$day())}),0),$def(self,"$to_n",(function(){return this.date}),0),$def(self,"$step",(function $$step(limit,step){var steps,result,block=$$step.$$p||nil,steps_count=nil;return delete $$step.$$p,null==step&&(step=1),steps_count=$rb_minus(limit,this).$to_i(),steps=$truthy($rb_lt($rb_times(steps_count,step),0))?[]:$truthy($rb_lt(steps_count,0))?$send(Opal.Range.$new(0,steps_count["$-@"](),!1).$step(step.$abs()),"map",[],"-@".$to_proc()).$reverse():Opal.Range.$new(0,steps_count,!1).$step(step.$abs()),result=$send(steps,"map",[],(function $$8(i){return null==i&&(i=nil),$rb_plus(null==$$8.$$s?this:$$8.$$s,i)}),{$$arity:1,$$s:this}),block!==nil?($send(result,"each",[],(function(i){return null==i&&(i=nil),Opal.yield1(block,i)}),1),this):result}),-2),$def(self,"$upto",(function $$upto(max){var block=$$upto.$$p||nil;return delete $$upto.$$p,$send(this,"step",[max,1],block.$to_proc())}),1),$def(self,"$downto",(function $$downto(min){var block=$$downto.$$p||nil;return delete $$downto.$$p,$send(this,"step",[min,-1],block.$to_proc())}),1),$def(self,"$cwday",(function(){return this.date.getDay()||7}),0),$def(self,"$cweek",(function(){var d=new Date(this.date);return d.setHours(0,0,0),d.setDate(d.getDate()+4-(d.getDay()||7)),Math.ceil(((d-new Date(d.getFullYear(),0,1))/864e5+1)/7)}),0),$defs(self,"$_days_in_month",(function(year,month){return[31,year%4==0&&year%100!=0||year%400==0?29:28,31,30,31,30,31,31,30,31,30,31][month]}),2),$alias(self,"eql?","=="),$alias(self,"succ","next")}($nesting[0],0,$nesting),self.$require("date/date_time"),self.$require("date/formatters")};
diff --git a/opal/master/date.min.js.gz b/opal/master/date.min.js.gz
index 7430193b..6e41357e 100644
Binary files a/opal/master/date.min.js.gz and b/opal/master/date.min.js.gz differ
diff --git a/opal/master/delegate.js b/opal/master/delegate.js
index b7f215aa..cc1a08ff 100644
--- a/opal/master/delegate.js
+++ b/opal/master/delegate.js
@@ -1,68 +1,64 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["delegate"] = function(Opal) {
-  var $DelegateClass$6, self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["delegate"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $klass = Opal.klass, $def = Opal.def, $truthy = Opal.truthy, $send = Opal.send, $to_a = Opal.to_a, $send2 = Opal.send2, $find_super = Opal.find_super;
 
-  Opal.add_stubs(['$__setobj__', '$__getobj__', '$respond_to?', '$__send__', '$to_proc']);
+  Opal.add_stubs('__setobj__,__getobj__,respond_to?,__send__,to_proc');
   
-  (function($base, $super, $parent_nesting) {
+  (function($base, $super) {
     var self = $klass($base, $super, 'Delegator');
 
-    var $nesting = [self].concat($parent_nesting), $Delegator_initialize$1, $Delegator_method_missing$2, $Delegator_respond_to_missing$ques$3;
-
     
     
-    Opal.def(self, '$initialize', $Delegator_initialize$1 = function $$initialize(obj) {
+    
+    $def(self, '$initialize', function $$initialize(obj) {
       var self = this;
 
       return self.$__setobj__(obj)
-    }, $Delegator_initialize$1.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$method_missing', $Delegator_method_missing$2 = function $$method_missing(m, $a) {
-      var $iter = $Delegator_method_missing$2.$$p, block = $iter || nil, $post_args, args, self = this, target = nil;
+    $def(self, '$method_missing', function $$method_missing(m, $a) {
+      var block = $$method_missing.$$p || nil, $post_args, args, self = this, target = nil;
 
-      if ($iter) $Delegator_method_missing$2.$$p = null;
-      
+      delete $$method_missing.$$p;
       
-      if ($iter) $Delegator_method_missing$2.$$p = null;;
+      ;
       
-      $post_args = Opal.slice.call(arguments, 1, arguments.length);
+      $post_args = Opal.slice.call(arguments, 1);
       
       args = $post_args;;
       target = self.$__getobj__();
       if ($truthy(target['$respond_to?'](m))) {
-        return $send(target, '__send__', [m].concat(Opal.to_a(args)), block.$to_proc())
+        return $send(target, '__send__', [m].concat($to_a(args)), block.$to_proc())
       } else {
-        return $send2(self, $find_super(self, 'method_missing', $Delegator_method_missing$2, false, true), 'method_missing', [m].concat(Opal.to_a(args)), block.$to_proc())
+        return $send2(self, $find_super(self, 'method_missing', $$method_missing, false, true), 'method_missing', [m].concat($to_a(args)), block.$to_proc())
       };
-    }, $Delegator_method_missing$2.$$arity = -2);
-    return (Opal.def(self, '$respond_to_missing?', $Delegator_respond_to_missing$ques$3 = function(m, include_private) {
+    }, -2);
+    return $def(self, '$respond_to_missing?', function $Delegator_respond_to_missing$ques$1(m, include_private) {
       var self = this;
 
       return self.$__getobj__()['$respond_to?'](m, include_private)
-    }, $Delegator_respond_to_missing$ques$3.$$arity = 2), nil) && 'respond_to_missing?';
-  })($nesting[0], $$($nesting, 'BasicObject'), $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 2);
+  })($nesting[0], $$('BasicObject'));
+  (function($base, $super) {
     var self = $klass($base, $super, 'SimpleDelegator');
 
-    var $nesting = [self].concat($parent_nesting), $SimpleDelegator___getobj__$4, $SimpleDelegator___setobj__$5;
+    var $proto = self.$$prototype;
 
-    self.$$prototype.delegate_sd_obj = nil;
+    $proto.delegate_sd_obj = nil;
     
     
-    Opal.def(self, '$__getobj__', $SimpleDelegator___getobj__$4 = function $$__getobj__() {
+    $def(self, '$__getobj__', function $$__getobj__() {
       var self = this;
 
       return self.delegate_sd_obj
-    }, $SimpleDelegator___getobj__$4.$$arity = 0);
-    return (Opal.def(self, '$__setobj__', $SimpleDelegator___setobj__$5 = function $$__setobj__(obj) {
+    }, 0);
+    return $def(self, '$__setobj__', function $$__setobj__(obj) {
       var self = this;
 
       return (self.delegate_sd_obj = obj)
-    }, $SimpleDelegator___setobj__$5.$$arity = 1), nil) && '__setobj__';
-  })($nesting[0], $$($nesting, 'Delegator'), $nesting);
-  return (Opal.def(self, '$DelegateClass', $DelegateClass$6 = function $$DelegateClass(superklass) {
-    var self = this;
-
-    return $$($nesting, 'SimpleDelegator')
-  }, $DelegateClass$6.$$arity = 1), nil) && 'DelegateClass';
+    }, 1);
+  })($nesting[0], $$('Delegator'));
+  return $def(self, '$DelegateClass', function $$DelegateClass(superklass) {
+    
+    return $$('SimpleDelegator')
+  }, 1);
 };
diff --git a/opal/master/delegate.min.js b/opal/master/delegate.min.js
index 699e305d..09646a05 100644
--- a/opal/master/delegate.min.js
+++ b/opal/master/delegate.min.js
@@ -1 +1 @@
-Opal.modules.delegate=function(Opal){var $base,$Delegator_respond_to_missing$ques$3,$Delegator_initialize$1,$Delegator_method_missing$2,$DelegateClass$6=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send,$send2=Opal.send2,$find_super=Opal.find_super;return Opal.add_stubs(["$__setobj__","$__getobj__","$respond_to?","$__send__","$to_proc"]),$base=$nesting[0],$Delegator_respond_to_missing$ques$3=$$($nesting,"BasicObject"),$Delegator_initialize$1=$nesting,[$Delegator_respond_to_missing$ques$3=$klass($base,$Delegator_respond_to_missing$ques$3,"Delegator")].concat($Delegator_initialize$1),Opal.def($Delegator_respond_to_missing$ques$3,"$initialize",$Delegator_initialize$1=function(obj){return this.$__setobj__(obj)},$Delegator_initialize$1.$$arity=1),Opal.def($Delegator_respond_to_missing$ques$3,"$method_missing",$Delegator_method_missing$2=function(m,$a){var args=$Delegator_method_missing$2.$$p,block=args||nil,target=nil;return args&&($Delegator_method_missing$2.$$p=null),args&&($Delegator_method_missing$2.$$p=null),args=Opal.slice.call(arguments,1,arguments.length),target=this.$__getobj__(),$truthy(target["$respond_to?"](m))?$send(target,"__send__",[m].concat(Opal.to_a(args)),block.$to_proc()):$send2(this,$find_super(this,"method_missing",$Delegator_method_missing$2,!1,!0),"method_missing",[m].concat(Opal.to_a(args)),block.$to_proc())},$Delegator_method_missing$2.$$arity=-2),Opal.def($Delegator_respond_to_missing$ques$3,"$respond_to_missing?",$Delegator_respond_to_missing$ques$3=function(m,include_private){return this.$__getobj__()["$respond_to?"](m,include_private)},$Delegator_respond_to_missing$ques$3.$$arity=2),function($base,$SimpleDelegator___setobj__$5,$SimpleDelegator___getobj__$4){[$SimpleDelegator___setobj__$5=$klass($base,$SimpleDelegator___setobj__$5,"SimpleDelegator")].concat($SimpleDelegator___getobj__$4),$SimpleDelegator___setobj__$5.$$prototype.delegate_sd_obj=nil,Opal.def($SimpleDelegator___setobj__$5,"$__getobj__",$SimpleDelegator___getobj__$4=function(){return this.delegate_sd_obj},$SimpleDelegator___getobj__$4.$$arity=0),Opal.def($SimpleDelegator___setobj__$5,"$__setobj__",$SimpleDelegator___setobj__$5=function(obj){return this.delegate_sd_obj=obj},$SimpleDelegator___setobj__$5.$$arity=1)}($nesting[0],$$($nesting,"Delegator"),$nesting),Opal.def($DelegateClass$6,"$DelegateClass",$DelegateClass$6=function(){return $$($nesting,"SimpleDelegator")},$DelegateClass$6.$$arity=1),nil&&"DelegateClass"};
+Opal.modules.delegate=function(Opal){var self=Opal.top,$nesting=[],$$=Opal.$r($nesting),nil=Opal.nil,$klass=Opal.klass,$def=Opal.def,$truthy=Opal.truthy,$send=Opal.send,$to_a=Opal.to_a,$send2=Opal.send2,$find_super=Opal.find_super;return Opal.add_stubs("__setobj__,__getobj__,respond_to?,__send__,to_proc"),function($base,$super){var self=$klass($base,$super,"Delegator");$def(self,"$initialize",(function(obj){return this.$__setobj__(obj)}),1),$def(self,"$method_missing",(function $$method_missing(m,$a){var args,block=$$method_missing.$$p||nil,self=this,target=nil;return delete $$method_missing.$$p,args=Opal.slice.call(arguments,1),target=self.$__getobj__(),$truthy(target["$respond_to?"](m))?$send(target,"__send__",[m].concat($to_a(args)),block.$to_proc()):$send2(self,$find_super(self,"method_missing",$$method_missing,!1,!0),"method_missing",[m].concat($to_a(args)),block.$to_proc())}),-2),$def(self,"$respond_to_missing?",(function(m,include_private){return this.$__getobj__()["$respond_to?"](m,include_private)}),2)}($nesting[0],$$("BasicObject")),function($base,$super){var self=$klass($base,$super,"SimpleDelegator");self.$$prototype.delegate_sd_obj=nil,$def(self,"$__getobj__",(function(){return this.delegate_sd_obj}),0),$def(self,"$__setobj__",(function(obj){return this.delegate_sd_obj=obj}),1)}($nesting[0],$$("Delegator")),$def(self,"$DelegateClass",(function(superklass){return $$("SimpleDelegator")}),1)};
diff --git a/opal/master/delegate.min.js.gz b/opal/master/delegate.min.js.gz
index 6875f59b..5ed9ae15 100644
Binary files a/opal/master/delegate.min.js.gz and b/opal/master/delegate.min.js.gz differ
diff --git a/opal/master/dir.js b/opal/master/dir.js
index 417fe849..90ef8168 100644
--- a/opal/master/dir.js
+++ b/opal/master/dir.js
@@ -1,7 +1,6 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["dir"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$;
+Opal.modules["dir"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, nil = Opal.nil;
 
-  Opal.add_stubs(['$warn']);
+  Opal.add_stubs('warn');
   return self.$warn("Dir is already part of corelib now, you don't need to require it anymore.")
 };
diff --git a/opal/master/dir.min.js b/opal/master/dir.min.js
index bdb90159..8f8195bc 100644
--- a/opal/master/dir.min.js
+++ b/opal/master/dir.min.js
@@ -1 +1 @@
-Opal.modules.dir=function(Opal){var self=Opal.top;Opal.nil,Opal.$$$,Opal.$$;return Opal.add_stubs(["$warn"]),self.$warn("Dir is already part of corelib now, you don't need to require it anymore.")};
+Opal.modules.dir=function(Opal){var self=Opal.top;Opal.nil;return Opal.add_stubs("warn"),self.$warn("Dir is already part of corelib now, you don't need to require it anymore.")};
diff --git a/opal/master/dir.min.js.gz b/opal/master/dir.min.js.gz
index fc8f17f1..623019e8 100644
Binary files a/opal/master/dir.min.js.gz and b/opal/master/dir.min.js.gz differ
diff --git a/opal/master/e2mmap.js b/opal/master/e2mmap.js
index 6d945ac6..f8dd0ef9 100644
--- a/opal/master/e2mmap.js
+++ b/opal/master/e2mmap.js
@@ -1,222 +1,179 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["e2mmap"] = function(Opal) {
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $send2 = Opal.send2, $find_super = Opal.find_super, $truthy = Opal.truthy, $send = Opal.send, $alias = Opal.alias, $hash2 = Opal.hash2, $gvars = Opal.gvars;
-
-  Opal.add_stubs(['$<', '$bind', '$module_eval', '$Raise', '$class', '$extend', '$def_e2message', '$def_exception', '$instance_eval', '$[]=', '$-', '$new', '$const_defined?', '$remove_const', '$const_set', '$e2mm_message', '$nil?', '$caller', '$=~', '$[]', '$quote', '$shift', '$raise', '$sprintf', '$Fail', '$inspect', '$each', '$ancestors']);
+Opal.modules["e2mmap"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $const_set = Opal.const_set, $send2 = Opal.send2, $find_super = Opal.find_super, $truthy = Opal.truthy, $rb_lt = Opal.rb_lt, $defs = Opal.defs, $send = Opal.send, $to_a = Opal.to_a, $def = Opal.def, $alias = Opal.alias, $hash2 = Opal.hash2, $rb_minus = Opal.rb_minus, $gvars = Opal.gvars, $regexp = Opal.regexp;
+
+  Opal.add_stubs('<,bind,module_eval,Raise,class,extend,def_e2message,def_exception,instance_eval,[]=,-,new,const_defined?,remove_const,const_set,e2mm_message,nil?,caller,=~,[],quote,shift,raise,sprintf,Fail,inspect,each,ancestors');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Exception2MessageMapper');
 
-    var $nesting = [self].concat($parent_nesting), $Exception2MessageMapper_extend_object$1, $Exception2MessageMapper_bind$2, $Exception2MessageMapper_Raise$6, $Exception2MessageMapper_def_e2message$7, $Exception2MessageMapper_def_exception$8, $Exception2MessageMapper_def_e2message$9, $Exception2MessageMapper_def_exception$11, $Exception2MessageMapper_Raise$14, $Exception2MessageMapper_e2mm_message$15;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
-    Opal.const_set($nesting[0], 'E2MM', $$($nesting, 'Exception2MessageMapper'));
-    Opal.defs($$($nesting, 'E2MM'), '$extend_object', $Exception2MessageMapper_extend_object$1 = function $$extend_object(cl) {
-      var $iter = $Exception2MessageMapper_extend_object$1.$$p, $yield = $iter || nil, self = this, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
-
-      if ($iter) $Exception2MessageMapper_extend_object$1.$$p = null;
-      // Prepare super implicit arguments
-      for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-        $zuper[$zuper_i] = arguments[$zuper_i];
-      }
-      
-      $send2(self, $find_super(self, 'extend_object', $Exception2MessageMapper_extend_object$1, false, true), 'extend_object', $zuper, $iter);
-      if ($truthy($rb_lt(cl, $$($nesting, 'E2MM')))) {
+    $const_set($nesting[0], 'E2MM', $$('Exception2MessageMapper'));
+    $defs($$('E2MM'), '$extend_object', function $$extend_object(cl) {
+      var $yield = $$extend_object.$$p || nil, self = this;
+
+      delete $$extend_object.$$p;
+      
+      $send2(self, $find_super(self, 'extend_object', $$extend_object, false, true), 'extend_object', [cl], $yield);
+      if ($truthy($rb_lt(cl, $$('E2MM')))) {
         return nil
       } else {
         return cl.$bind(self)
       };
-    }, $Exception2MessageMapper_extend_object$1.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$bind', $Exception2MessageMapper_bind$2 = function $$bind(cl) {
-      var $$3, self = this;
+    $def(self, '$bind', function $$bind(cl) {
+      var self = this;
 
-      return $send(self, 'module_eval', [], ($$3 = function(){var self = $$3.$$s == null ? this : $$3.$$s, $Raise$4, $included$5;
+      return $send(self, 'module_eval', [], function $$1(){var self = $$1.$$s == null ? this : $$1.$$s;
 
         
         
-        Opal.def(self, '$Raise', $Raise$4 = function $$Raise($a, $b) {
+        $def(self, '$Raise', function $$Raise($a, $b) {
           var $post_args, err, rest, self = this;
 
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
-          if ($post_args.length > 0) {
-            err = $post_args[0];
-            $post_args.splice(0, 1);
-          }
-          if (err == null) {
-            err = nil;
-          };
+          if ($post_args.length > 0) err = $post_args.shift();
+          if (err == null) err = nil;;
           
           rest = $post_args;;
-          return $send($$($nesting, 'Exception2MessageMapper'), 'Raise', [self.$class(), err].concat(Opal.to_a(rest)));
-        }, $Raise$4.$$arity = -1);
+          return $send($$('Exception2MessageMapper'), 'Raise', [self.$class(), err].concat($to_a(rest)));
+        }, -1);
         $alias(self, "Fail", "Raise");
         (function(self, $parent_nesting) {
-          var $nesting = [self].concat($parent_nesting);
-
+          
           
           
           Opal.udef(self, '$' + "included");;
           return nil;
         })(Opal.get_singleton_class(self), $nesting);
-        return (Opal.defs(self, '$included', $included$5 = function $$included(mod) {
-          var self = this;
-
-          return mod.$extend($$($nesting, 'Exception2MessageMapper'))
-        }, $included$5.$$arity = 1), nil) && 'included';}, $$3.$$s = self, $$3.$$arity = 0, $$3))
-    }, $Exception2MessageMapper_bind$2.$$arity = 1);
+        return $defs(self, '$included', function $$included(mod) {
+          
+          return mod.$extend($$('Exception2MessageMapper'))
+        }, 1);}, {$$arity: 0, $$s: self})
+    }, 1);
     
-    Opal.def(self, '$Raise', $Exception2MessageMapper_Raise$6 = function $$Raise($a, $b) {
+    $def(self, '$Raise', function $$Raise($a, $b) {
       var $post_args, err, rest, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
-      if ($post_args.length > 0) {
-        err = $post_args[0];
-        $post_args.splice(0, 1);
-      }
-      if (err == null) {
-        err = nil;
-      };
+      if ($post_args.length > 0) err = $post_args.shift();
+      if (err == null) err = nil;;
       
       rest = $post_args;;
-      return $send($$($nesting, 'E2MM'), 'Raise', [self, err].concat(Opal.to_a(rest)));
-    }, $Exception2MessageMapper_Raise$6.$$arity = -1);
+      return $send($$('E2MM'), 'Raise', [self, err].concat($to_a(rest)));
+    }, -1);
     $alias(self, "Fail", "Raise");
     $alias(self, "fail", "Raise");
     
-    Opal.def(self, '$def_e2message', $Exception2MessageMapper_def_e2message$7 = function $$def_e2message(c, m) {
+    $def(self, '$def_e2message', function $$def_e2message(c, m) {
       var self = this;
 
-      return $$($nesting, 'E2MM').$def_e2message(self, c, m)
-    }, $Exception2MessageMapper_def_e2message$7.$$arity = 2);
+      return $$('E2MM').$def_e2message(self, c, m)
+    }, 2);
     
-    Opal.def(self, '$def_exception', $Exception2MessageMapper_def_exception$8 = function $$def_exception(n, m, s) {
+    $def(self, '$def_exception', function $$def_exception(n, m, s) {
       var self = this;
 
       
       
-      if (s == null) {
-        s = $$($nesting, 'StandardError');
-      };
-      return $$($nesting, 'E2MM').$def_exception(self, n, m, s);
-    }, $Exception2MessageMapper_def_exception$8.$$arity = -3);
+      if (s == null) s = $$('StandardError');;
+      return $$('E2MM').$def_exception(self, n, m, s);
+    }, -3);
     self.MessageMap = $hash2([], {});
-    Opal.defs($$($nesting, 'E2MM'), '$def_e2message', $Exception2MessageMapper_def_e2message$9 = function $$def_e2message(k, c, m) {
-      var $$10, self = this;
+    $defs($$('E2MM'), '$def_e2message', function $$def_e2message(k, c, m) {
+      var self = this;
 
       
-      $send($$($nesting, 'E2MM'), 'instance_eval', [], ($$10 = function(){var self = $$10.$$s == null ? this : $$10.$$s, $writer = nil;
+      $send($$('E2MM'), 'instance_eval', [], function $$2(){var self = $$2.$$s == null ? this : $$2.$$s, $writer = nil;
         if (self.MessageMap == null) self.MessageMap = nil;
 
         
         $writer = [[k, c], m];
-        $send(self.MessageMap, '[]=', Opal.to_a($writer));
-        return $writer[$rb_minus($writer["length"], 1)];}, $$10.$$s = self, $$10.$$arity = 0, $$10));
+        $send(self.MessageMap, '[]=', $to_a($writer));
+        return $writer[$rb_minus($writer["length"], 1)];}, {$$arity: 0, $$s: self});
       return c;
-    }, $Exception2MessageMapper_def_e2message$9.$$arity = 3);
-    Opal.defs($$($nesting, 'E2MM'), '$def_exception', $Exception2MessageMapper_def_exception$11 = function $$def_exception(k, n, m, s) {
-      var $$12, $$13, self = this, e = nil;
+    }, 3);
+    $defs($$('E2MM'), '$def_exception', function $$def_exception(k, n, m, s) {
+      var self = this, e = nil;
 
       
       
-      if (s == null) {
-        s = $$($nesting, 'StandardError');
-      };
-      e = $$($nesting, 'Class').$new(s);
-      $send($$($nesting, 'E2MM'), 'instance_eval', [], ($$12 = function(){var self = $$12.$$s == null ? this : $$12.$$s, $writer = nil;
+      if (s == null) s = $$('StandardError');;
+      e = $$('Class').$new(s);
+      $send($$('E2MM'), 'instance_eval', [], function $$3(){var self = $$3.$$s == null ? this : $$3.$$s, $writer = nil;
         if (self.MessageMap == null) self.MessageMap = nil;
 
         
         $writer = [[k, e], m];
-        $send(self.MessageMap, '[]=', Opal.to_a($writer));
-        return $writer[$rb_minus($writer["length"], 1)];}, $$12.$$s = self, $$12.$$arity = 0, $$12));
+        $send(self.MessageMap, '[]=', $to_a($writer));
+        return $writer[$rb_minus($writer["length"], 1)];}, {$$arity: 0, $$s: self});
       if ($truthy(k['$const_defined?'](n, false))) {
-        $send(k, 'module_eval', [], ($$13 = function(){var self = $$13.$$s == null ? this : $$13.$$s;
+        $send(k, 'module_eval', [], function $$4(){var self = $$4.$$s == null ? this : $$4.$$s;
 
-          return self.$remove_const(n)}, $$13.$$s = self, $$13.$$arity = 0, $$13))};
+          return self.$remove_const(n)}, {$$arity: 0, $$s: self})
+      };
       return k.$const_set(n, e);
-    }, $Exception2MessageMapper_def_exception$11.$$arity = -4);
-    Opal.defs($$($nesting, 'E2MM'), '$Raise', $Exception2MessageMapper_Raise$14 = function $$Raise($a, $b, $c) {
+    }, -4);
+    $defs($$('E2MM'), '$Raise', function $$Raise($a, $b, $c) {
       var $post_args, klass, err, rest, self = this, form = nil, b = nil;
       if ($gvars["@"] == null) $gvars["@"] = nil;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
-      if ($post_args.length > 0) {
-        klass = $post_args[0];
-        $post_args.splice(0, 1);
-      }
-      if (klass == null) {
-        klass = $$($nesting, 'E2MM');
-      };
+      if ($post_args.length > 0) klass = $post_args.shift();
+      if (klass == null) klass = $$('E2MM');;
       
-      if ($post_args.length > 0) {
-        err = $post_args[0];
-        $post_args.splice(0, 1);
-      }
-      if (err == null) {
-        err = nil;
-      };
+      if ($post_args.length > 0) err = $post_args.shift();
+      if (err == null) err = nil;;
       
       rest = $post_args;;
       if ($truthy((form = self.$e2mm_message(klass, err)))) {
         
-        b = (function() {if ($truthy($gvars["@"]['$nil?']())) {
-          return self.$caller(1)
-        } else {
-          return $gvars["@"]
-        }; return nil; })();
-        if ($truthy(b['$[]'](0)['$=~'](Opal.regexp(["^", $$($nesting, 'Regexp').$quote("./e2mmap.rb"), ":"])))) {
-          b.$shift()};
-        return self.$raise(err, $send(self, 'sprintf', [form].concat(Opal.to_a(rest))), b);
+        b = ($truthy($gvars["@"]['$nil?']()) ? (self.$caller(1)) : ($gvars["@"]));
+        if ($truthy(b['$[]'](0)['$=~']($regexp(["^", $$('Regexp').$quote("./e2mmap.rb"), ":"])))) {
+          b.$shift()
+        };
+        return self.$raise(err, $send(self, 'sprintf', [form].concat($to_a(rest))), b);
       } else {
-        return $$($nesting, 'E2MM').$Fail($$($nesting, 'E2MM'), $$($nesting, 'ErrNotRegisteredException'), err.$inspect())
+        return $$('E2MM').$Fail($$('E2MM'), $$('ErrNotRegisteredException'), err.$inspect())
       };
-    }, $Exception2MessageMapper_Raise$14.$$arity = -1);
+    }, -1);
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return $alias(self, "Fail", "Raise")
-    })(Opal.get_singleton_class($$($nesting, 'E2MM')), $nesting);
-    Opal.defs($$($nesting, 'E2MM'), '$e2mm_message', $Exception2MessageMapper_e2mm_message$15 = function $$e2mm_message(klass, exp) {try {
+    })(Opal.get_singleton_class($$('E2MM')), $nesting);
+    $defs($$('E2MM'), '$e2mm_message', function $$e2mm_message(klass, exp) {try {
 
-      var $$16, self = this;
+      var self = this;
 
       
-      $send(klass.$ancestors(), 'each', [], ($$16 = function(c){var self = $$16.$$s == null ? this : $$16.$$s, mes = nil;
+      $send(klass.$ancestors(), 'each', [], function $$5(c){var self = $$5.$$s == null ? this : $$5.$$s, mes = nil;
         if (self.MessageMap == null) self.MessageMap = nil;
 
         
         
-        if (c == null) {
-          c = nil;
-        };
+        if (c == null) c = nil;;
         if ($truthy((mes = self.MessageMap['$[]']([c, exp])))) {
           Opal.ret(mes)
         } else {
           return nil
-        };}, $$16.$$s = self, $$16.$$arity = 1, $$16));
+        };}, {$$arity: 1, $$s: self});
       return nil;
       } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
-    }, $Exception2MessageMapper_e2mm_message$15.$$arity = 2);
+    }, 2);
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return $alias(self, "message", "e2mm_message")
     })(Opal.get_singleton_class(self), $nesting);
-    return $$($nesting, 'E2MM').$def_exception($$($nesting, 'E2MM'), "ErrNotRegisteredException", "not registered exception(%s)");
+    return $$('E2MM').$def_exception($$('E2MM'), "ErrNotRegisteredException", "not registered exception(%s)");
   })($nesting[0], $nesting)
 };
diff --git a/opal/master/e2mmap.min.js b/opal/master/e2mmap.min.js
index 4285a33b..ecee32e3 100644
--- a/opal/master/e2mmap.min.js
+++ b/opal/master/e2mmap.min.js
@@ -1 +1 @@
-Opal.modules.e2mmap=function(Opal){function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$send2=Opal.send2,$find_super=Opal.find_super,$truthy=Opal.truthy,$send=Opal.send,$alias=Opal.alias,$hash2=Opal.hash2,$gvars=Opal.gvars;return Opal.add_stubs(["$<","$bind","$module_eval","$Raise","$class","$extend","$def_e2message","$def_exception","$instance_eval","$[]=","$-","$new","$const_defined?","$remove_const","$const_set","$e2mm_message","$nil?","$caller","$=~","$[]","$quote","$shift","$raise","$sprintf","$Fail","$inspect","$each","$ancestors"]),function(self,$Exception2MessageMapper_e2mm_message$15){var $Exception2MessageMapper_extend_object$1,self=$module(self,"Exception2MessageMapper"),$nesting=[self].concat($Exception2MessageMapper_e2mm_message$15);return Opal.const_set($nesting[0],"E2MM",$$($nesting,"Exception2MessageMapper")),Opal.defs($$($nesting,"E2MM"),"$extend_object",$Exception2MessageMapper_extend_object$1=function(cl){var $zuper_ii,lhs,rhs=$Exception2MessageMapper_extend_object$1.$$p,$zuper=nil,$zuper_i=nil;for(rhs&&($Exception2MessageMapper_extend_object$1.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return $send2(this,$find_super(this,"extend_object",$Exception2MessageMapper_extend_object$1,!1,!0),"extend_object",$zuper,rhs),$truthy((lhs=cl,rhs=$$($nesting,"E2MM"),"number"==typeof lhs&&"number"==typeof rhs?lhs<rhs:lhs["$<"](rhs)))?nil:cl.$bind(this)},$Exception2MessageMapper_extend_object$1.$$arity=1),Opal.def(self,"$bind",$Exception2MessageMapper_e2mm_message$15=function(){var $$3;return $send(this,"module_eval",[],(($$3=function(){var $Raise$4,$included$5=null==$$3.$$s?this:$$3.$$s;return Opal.def($included$5,"$Raise",$Raise$4=function($a,$b){var err,rest=Opal.slice.call(arguments,0,arguments.length);return 0<rest.length&&(err=rest[0],rest.splice(0,1)),null==err&&(err=nil),rest=rest,$send($$($nesting,"Exception2MessageMapper"),"Raise",[this.$class(),err].concat(Opal.to_a(rest)))},$Raise$4.$$arity=-1),$alias($included$5,"Fail","Raise"),function(self,$parent_nesting){[self].concat($parent_nesting),Opal.udef(self,"$included")}(Opal.get_singleton_class($included$5),$nesting),Opal.defs($included$5,"$included",$included$5=function(mod){return mod.$extend($$($nesting,"Exception2MessageMapper"))},$included$5.$$arity=1),nil&&"included"}).$$s=this,$$3.$$arity=0,$$3))},$Exception2MessageMapper_e2mm_message$15.$$arity=1),Opal.def(self,"$Raise",$Exception2MessageMapper_e2mm_message$15=function($a,$b){var err,self=this,rest=Opal.slice.call(arguments,0,arguments.length);return 0<rest.length&&(err=rest[0],rest.splice(0,1)),null==err&&(err=nil),rest=rest,$send($$($nesting,"E2MM"),"Raise",[self,err].concat(Opal.to_a(rest)))},$Exception2MessageMapper_e2mm_message$15.$$arity=-1),$alias(self,"Fail","Raise"),$alias(self,"fail","Raise"),Opal.def(self,"$def_e2message",$Exception2MessageMapper_e2mm_message$15=function(c,m){return $$($nesting,"E2MM").$def_e2message(this,c,m)},$Exception2MessageMapper_e2mm_message$15.$$arity=2),Opal.def(self,"$def_exception",$Exception2MessageMapper_e2mm_message$15=function(n,m,s){return null==s&&(s=$$($nesting,"StandardError")),$$($nesting,"E2MM").$def_exception(this,n,m,s)},$Exception2MessageMapper_e2mm_message$15.$$arity=-3),self.MessageMap=$hash2([],{}),Opal.defs($$($nesting,"E2MM"),"$def_e2message",$Exception2MessageMapper_e2mm_message$15=function(k,c,m){var $$10;return $send($$($nesting,"E2MM"),"instance_eval",[],(($$10=function(){var $writer,self=null==$$10.$$s?this:$$10.$$s;return null==self.MessageMap&&(self.MessageMap=nil),$writer=[[k,c],m],$send(self.MessageMap,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]}).$$s=this,$$10.$$arity=0,$$10)),c},$Exception2MessageMapper_e2mm_message$15.$$arity=3),Opal.defs($$($nesting,"E2MM"),"$def_exception",$Exception2MessageMapper_e2mm_message$15=function(k,n,m,s){var $$12,$$13,e;return null==s&&(s=$$($nesting,"StandardError")),e=$$($nesting,"Class").$new(s),$send($$($nesting,"E2MM"),"instance_eval",[],(($$12=function(){var $writer,self=null==$$12.$$s?this:$$12.$$s;return null==self.MessageMap&&(self.MessageMap=nil),$writer=[[k,e],m],$send(self.MessageMap,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]}).$$s=this,$$12.$$arity=0,$$12)),$truthy(k["$const_defined?"](n,!1))&&$send(k,"module_eval",[],(($$13=function(){return(null==$$13.$$s?this:$$13.$$s).$remove_const(n)}).$$s=this,$$13.$$arity=0,$$13)),k.$const_set(n,e)},$Exception2MessageMapper_e2mm_message$15.$$arity=-4),Opal.defs($$($nesting,"E2MM"),"$Raise",$Exception2MessageMapper_e2mm_message$15=function($a,$b,$c){var klass,err,rest,self=this,form=nil,b=nil;return null==$gvars["@"]&&($gvars["@"]=nil),0<(rest=Opal.slice.call(arguments,0,arguments.length)).length&&(klass=rest[0],rest.splice(0,1)),null==klass&&(klass=$$($nesting,"E2MM")),0<rest.length&&(err=rest[0],rest.splice(0,1)),null==err&&(err=nil),rest=rest,$truthy(form=self.$e2mm_message(klass,err))?(b=$truthy($gvars["@"]["$nil?"]())?self.$caller(1):$gvars["@"],$truthy(b["$[]"](0)["$=~"](Opal.regexp(["^",$$($nesting,"Regexp").$quote("./e2mmap.rb"),":"])))&&b.$shift(),self.$raise(err,$send(self,"sprintf",[form].concat(Opal.to_a(rest))),b)):$$($nesting,"E2MM").$Fail($$($nesting,"E2MM"),$$($nesting,"ErrNotRegisteredException"),err.$inspect())},$Exception2MessageMapper_e2mm_message$15.$$arity=-1),function(self,$parent_nesting){[self].concat($parent_nesting),$alias(self,"Fail","Raise")}(Opal.get_singleton_class($$($nesting,"E2MM")),$nesting),Opal.defs($$($nesting,"E2MM"),"$e2mm_message",$Exception2MessageMapper_e2mm_message$15=function(klass,exp){try{var $$16;return $send(klass.$ancestors(),"each",[],(($$16=function(c){var mes,self=null==$$16.$$s?this:$$16.$$s;if(null==self.MessageMap&&(self.MessageMap=nil),null==c&&(c=nil),!$truthy(mes=self.MessageMap["$[]"]([c,exp])))return nil;Opal.ret(mes)}).$$s=this,$$16.$$arity=1,$$16)),nil}catch($returner){if($returner===Opal.returner)return $returner.$v;throw $returner}},$Exception2MessageMapper_e2mm_message$15.$$arity=2),function(self,$parent_nesting){[self].concat($parent_nesting),$alias(self,"message","e2mm_message")}(Opal.get_singleton_class(self),$nesting),$$($nesting,"E2MM").$def_exception($$($nesting,"E2MM"),"ErrNotRegisteredException","not registered exception(%s)")}($nesting[0],$nesting)};
+Opal.modules.e2mmap=function(Opal){var $nesting=[],nil=Opal.nil,$module=Opal.module,$const_set=Opal.const_set,$send2=Opal.send2,$find_super=Opal.find_super,$truthy=Opal.truthy,$rb_lt=Opal.rb_lt,$defs=Opal.defs,$send=Opal.send,$to_a=Opal.to_a,$def=Opal.def,$alias=Opal.alias,$hash2=Opal.hash2,$rb_minus=Opal.rb_minus,$gvars=Opal.gvars,$regexp=Opal.regexp;return Opal.add_stubs("<,bind,module_eval,Raise,class,extend,def_e2message,def_exception,instance_eval,[]=,-,new,const_defined?,remove_const,const_set,e2mm_message,nil?,caller,=~,[],quote,shift,raise,sprintf,Fail,inspect,each,ancestors"),function($base,$parent_nesting){var self=$module($base,"Exception2MessageMapper"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return $const_set($nesting[0],"E2MM",$$("Exception2MessageMapper")),$defs($$("E2MM"),"$extend_object",(function $$extend_object(cl){var $yield=$$extend_object.$$p||nil;return delete $$extend_object.$$p,$send2(this,$find_super(this,"extend_object",$$extend_object,!1,!0),"extend_object",[cl],$yield),$truthy($rb_lt(cl,$$("E2MM")))?nil:cl.$bind(this)}),1),$def(self,"$bind",(function(cl){return $send(this,"module_eval",[],(function $$1(){var self=null==$$1.$$s?this:$$1.$$s;return $def(self,"$Raise",(function($a,$b){var $post_args,err,rest,self=this;return($post_args=Opal.slice.call(arguments)).length>0&&(err=$post_args.shift()),null==err&&(err=nil),rest=$post_args,$send($$("Exception2MessageMapper"),"Raise",[self.$class(),err].concat($to_a(rest)))}),-1),$alias(self,"Fail","Raise"),function(self,$parent_nesting){Opal.udef(self,"$included")}(Opal.get_singleton_class(self)),$defs(self,"$included",(function(mod){return mod.$extend($$("Exception2MessageMapper"))}),1)}),{$$arity:0,$$s:this})}),1),$def(self,"$Raise",(function($a,$b){var $post_args,err,rest,self=this;return($post_args=Opal.slice.call(arguments)).length>0&&(err=$post_args.shift()),null==err&&(err=nil),rest=$post_args,$send($$("E2MM"),"Raise",[self,err].concat($to_a(rest)))}),-1),$alias(self,"Fail","Raise"),$alias(self,"fail","Raise"),$def(self,"$def_e2message",(function(c,m){return $$("E2MM").$def_e2message(this,c,m)}),2),$def(self,"$def_exception",(function(n,m,s){return null==s&&(s=$$("StandardError")),$$("E2MM").$def_exception(this,n,m,s)}),-3),self.MessageMap=$hash2([],{}),$defs($$("E2MM"),"$def_e2message",(function(k,c,m){return $send($$("E2MM"),"instance_eval",[],(function $$2(){var $writer,self=null==$$2.$$s?this:$$2.$$s;return null==self.MessageMap&&(self.MessageMap=nil),$writer=[[k,c],m],$send(self.MessageMap,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]}),{$$arity:0,$$s:this}),c}),3),$defs($$("E2MM"),"$def_exception",(function(k,n,m,s){var e;return null==s&&(s=$$("StandardError")),e=$$("Class").$new(s),$send($$("E2MM"),"instance_eval",[],(function $$3(){var $writer,self=null==$$3.$$s?this:$$3.$$s;return null==self.MessageMap&&(self.MessageMap=nil),$writer=[[k,e],m],$send(self.MessageMap,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]}),{$$arity:0,$$s:this}),$truthy(k["$const_defined?"](n,!1))&&$send(k,"module_eval",[],(function $$4(){return(null==$$4.$$s?this:$$4.$$s).$remove_const(n)}),{$$arity:0,$$s:this}),k.$const_set(n,e)}),-4),$defs($$("E2MM"),"$Raise",(function($a,$b,$c){var $post_args,klass,err,rest,self=this,form=nil,b=nil;return null==$gvars["@"]&&($gvars["@"]=nil),($post_args=Opal.slice.call(arguments)).length>0&&(klass=$post_args.shift()),null==klass&&(klass=$$("E2MM")),$post_args.length>0&&(err=$post_args.shift()),null==err&&(err=nil),rest=$post_args,$truthy(form=self.$e2mm_message(klass,err))?(b=$truthy($gvars["@"]["$nil?"]())?self.$caller(1):$gvars["@"],$truthy(b["$[]"](0)["$=~"]($regexp(["^",$$("Regexp").$quote("./e2mmap.rb"),":"])))&&b.$shift(),self.$raise(err,$send(self,"sprintf",[form].concat($to_a(rest))),b)):$$("E2MM").$Fail($$("E2MM"),$$("ErrNotRegisteredException"),err.$inspect())}),-1),function(self,$parent_nesting){$alias(self,"Fail","Raise")}(Opal.get_singleton_class($$("E2MM"))),$defs($$("E2MM"),"$e2mm_message",(function(klass,exp){try{return $send(klass.$ancestors(),"each",[],(function $$5(c){var mes,self=null==$$5.$$s?this:$$5.$$s;if(null==self.MessageMap&&(self.MessageMap=nil),null==c&&(c=nil),!$truthy(mes=self.MessageMap["$[]"]([c,exp])))return nil;Opal.ret(mes)}),{$$arity:1,$$s:this}),nil}catch($returner){if($returner===Opal.returner)return $returner.$v;throw $returner}}),2),function(self,$parent_nesting){$alias(self,"message","e2mm_message")}(Opal.get_singleton_class(self)),$$("E2MM").$def_exception($$("E2MM"),"ErrNotRegisteredException","not registered exception(%s)")}($nesting[0],$nesting)};
diff --git a/opal/master/e2mmap.min.js.gz b/opal/master/e2mmap.min.js.gz
index 9f9630a1..3f1bda9c 100644
Binary files a/opal/master/e2mmap.min.js.gz and b/opal/master/e2mmap.min.js.gz differ
diff --git a/opal/master/encoding.js b/opal/master/encoding.js
index 2e65324c..12210049 100644
--- a/opal/master/encoding.js
+++ b/opal/master/encoding.js
@@ -1,7 +1,6 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["encoding"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$;
+Opal.modules["encoding"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, nil = Opal.nil;
 
-  Opal.add_stubs(['$warn']);
+  Opal.add_stubs('warn');
   return self.$warn("DEPRECATION: encoding is now part of the core library, requiring it is deprecated")
 };
diff --git a/opal/master/encoding.min.js b/opal/master/encoding.min.js
index 638c3bad..2c6551af 100644
--- a/opal/master/encoding.min.js
+++ b/opal/master/encoding.min.js
@@ -1 +1 @@
-Opal.modules.encoding=function(Opal){var self=Opal.top;Opal.nil,Opal.$$$,Opal.$$;return Opal.add_stubs(["$warn"]),self.$warn("DEPRECATION: encoding is now part of the core library, requiring it is deprecated")};
+Opal.modules.encoding=function(Opal){var self=Opal.top;Opal.nil;return Opal.add_stubs("warn"),self.$warn("DEPRECATION: encoding is now part of the core library, requiring it is deprecated")};
diff --git a/opal/master/encoding.min.js.gz b/opal/master/encoding.min.js.gz
index 3c0f2be0..5d66226e 100644
Binary files a/opal/master/encoding.min.js.gz and b/opal/master/encoding.min.js.gz differ
diff --git a/opal/master/enumerator.js b/opal/master/enumerator.js
index b6e5543c..82e7e19c 100644
--- a/opal/master/enumerator.js
+++ b/opal/master/enumerator.js
@@ -1,6 +1,3 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["enumerator"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$;
-
-  return nil
+Opal.modules["enumerator"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  return Opal.nil;
 };
diff --git a/opal/master/enumerator.min.js b/opal/master/enumerator.min.js
index 57729e5c..2cc564f1 100644
--- a/opal/master/enumerator.min.js
+++ b/opal/master/enumerator.min.js
@@ -1 +1 @@
-Opal.modules.enumerator=function(Opal){Opal.top;var nil=Opal.nil;Opal.$$$,Opal.$$;return nil};
+Opal.modules.enumerator=function(Opal){return Opal.nil};
diff --git a/opal/master/enumerator.min.js.gz b/opal/master/enumerator.min.js.gz
index d51aef8c..9cd43b08 100644
Binary files a/opal/master/enumerator.min.js.gz and b/opal/master/enumerator.min.js.gz differ
diff --git a/opal/master/erb.js b/opal/master/erb.js
index 39d10173..009d3097 100644
--- a/opal/master/erb.js
+++ b/opal/master/erb.js
@@ -1,110 +1,103 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["template"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $hash2 = Opal.hash2, $truthy = Opal.truthy, $send = Opal.send, $alias = Opal.alias;
-
-  Opal.add_stubs(['$[]', '$[]=', '$-', '$keys', '$attr_reader', '$instance_exec', '$new', '$to_proc', '$<<', '$join']);
+Opal.modules["template"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $klass = Opal.klass, $hash2 = Opal.hash2, $truthy = Opal.truthy, $defs = Opal.defs, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $def = Opal.def, $alias = Opal.alias;
+
+  Opal.add_stubs('[],[]=,-,keys,attr_reader,instance_exec,new,to_proc,<<,join');
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Template');
 
-    var $nesting = [self].concat($parent_nesting), $Template_$$$1, $Template_$$$eq$2, $Template_paths$3, $Template_initialize$4, $Template_inspect$5, $Template_render$6;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-    self.$$prototype.name = self.$$prototype.body = nil;
+    $proto.name = $proto.body = nil;
     
     self._cache = $hash2([], {});
-    Opal.defs(self, '$[]', $Template_$$$1 = function(name) {
+    $defs(self, '$[]', function $Template_$$$1(name) {
       var self = this, $ret_or_1 = nil;
       if (self._cache == null) self._cache = nil;
 
       if ($truthy(($ret_or_1 = self._cache['$[]'](name)))) {
         return $ret_or_1
       } else {
-        return self._cache['$[]']("" + "templates/" + (name))
+        return self._cache['$[]']("templates/" + (name))
       }
-    }, $Template_$$$1.$$arity = 1);
-    Opal.defs(self, '$[]=', $Template_$$$eq$2 = function(name, instance) {
+    }, 1);
+    $defs(self, '$[]=', function $Template_$$$eq$2(name, instance) {
       var self = this, $writer = nil;
       if (self._cache == null) self._cache = nil;
 
       
       $writer = [name, instance];
-      $send(self._cache, '[]=', Opal.to_a($writer));
+      $send(self._cache, '[]=', $to_a($writer));
       return $writer[$rb_minus($writer["length"], 1)];
-    }, $Template_$$$eq$2.$$arity = 2);
-    Opal.defs(self, '$paths', $Template_paths$3 = function $$paths() {
+    }, 2);
+    $defs(self, '$paths', function $$paths() {
       var self = this;
       if (self._cache == null) self._cache = nil;
 
       return self._cache.$keys()
-    }, $Template_paths$3.$$arity = 0);
+    }, 0);
     self.$attr_reader("body");
     
-    Opal.def(self, '$initialize', $Template_initialize$4 = function $$initialize(name) {
-      var $iter = $Template_initialize$4.$$p, body = $iter || nil, $a, self = this, $writer = nil;
+    $def(self, '$initialize', function $$initialize(name) {
+      var body = $$initialize.$$p || nil, $a, self = this, $writer = nil;
 
-      if ($iter) $Template_initialize$4.$$p = null;
-      
+      delete $$initialize.$$p;
       
-      if ($iter) $Template_initialize$4.$$p = null;;
+      ;
       $a = [name, body], (self.name = $a[0]), (self.body = $a[1]), $a;
       
       $writer = [name, self];
-      $send($$($nesting, 'Template'), '[]=', Opal.to_a($writer));
+      $send($$('Template'), '[]=', $to_a($writer));
       return $writer[$rb_minus($writer["length"], 1)];;
-    }, $Template_initialize$4.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$inspect', $Template_inspect$5 = function $$inspect() {
+    $def(self, '$inspect', function $$inspect() {
       var self = this;
 
-      return "" + "#<Template: '" + (self.name) + "'>"
-    }, $Template_inspect$5.$$arity = 0);
+      return "#<Template: '" + (self.name) + "'>"
+    }, 0);
     
-    Opal.def(self, '$render', $Template_render$6 = function $$render(ctx) {
+    $def(self, '$render', function $$render(ctx) {
       var self = this;
 
       
       
-      if (ctx == null) {
-        ctx = self;
-      };
-      return $send(ctx, 'instance_exec', [$$($nesting, 'OutputBuffer').$new()], self.body.$to_proc());
-    }, $Template_render$6.$$arity = -1);
-    return (function($base, $super, $parent_nesting) {
+      if (ctx == null) ctx = self;;
+      return $send(ctx, 'instance_exec', [$$('OutputBuffer').$new()], self.body.$to_proc());
+    }, -1);
+    return (function($base, $super) {
       var self = $klass($base, $super, 'OutputBuffer');
 
-      var $nesting = [self].concat($parent_nesting), $OutputBuffer_initialize$7, $OutputBuffer_append$8, $OutputBuffer_join$9;
+      var $proto = self.$$prototype;
 
-      self.$$prototype.buffer = nil;
+      $proto.buffer = nil;
       
       
-      Opal.def(self, '$initialize', $OutputBuffer_initialize$7 = function $$initialize() {
+      $def(self, '$initialize', function $$initialize() {
         var self = this;
 
         return (self.buffer = [])
-      }, $OutputBuffer_initialize$7.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$append', $OutputBuffer_append$8 = function $$append(str) {
+      $def(self, '$append', function $$append(str) {
         var self = this;
 
         return self.buffer['$<<'](str)
-      }, $OutputBuffer_append$8.$$arity = 1);
-      $alias(self, "append=", "append");
-      return (Opal.def(self, '$join', $OutputBuffer_join$9 = function $$join() {
+      }, 1);
+      
+      $def(self, '$join', function $$join() {
         var self = this;
 
         return self.buffer.$join()
-      }, $OutputBuffer_join$9.$$arity = 0), nil) && 'join';
-    })($nesting[0], null, $nesting);
+      }, 0);
+      return $alias(self, "append=", "append");
+    })($nesting[0], null);
   })($nesting[0], null, $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["erb"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $module = Opal.module, $alias = Opal.alias;
+Opal.modules["erb"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $klass = Opal.klass, $module = Opal.module, $def = Opal.def, $alias = Opal.alias;
 
-  Opal.add_stubs(['$require', '$module_function']);
+  Opal.add_stubs('require,module_function');
   
   self.$require("template");
   return (function($base, $super, $parent_nesting) {
@@ -112,23 +105,21 @@ Opal.modules["erb"] = function(Opal) {
 
     var $nesting = [self].concat($parent_nesting);
 
-    return (function($base, $parent_nesting) {
+    return (function($base) {
       var self = $module($base, 'Util');
 
-      var $nesting = [self].concat($parent_nesting), $Util_html_escape$1;
-
+      
       
       var escapes = { '&': '&amp;', '<': '&lt;', '>': '&gt;', '"': '&quot;', "'": '&#39;'};;
       var escape_regexp = /[&<>"']/g;;
       
-      Opal.def(self, '$html_escape', $Util_html_escape$1 = function $$html_escape(str) {
-        var self = this;
-
+      $def(self, '$html_escape', function $$html_escape(str) {
+        
         return ("" + str).replace(escape_regexp, function (m) { return escapes[m] });
-      }, $Util_html_escape$1.$$arity = 1);
+      }, 1);
       $alias(self, "h", "html_escape");
       self.$module_function("h");
       return self.$module_function("html_escape");
-    })($nesting[0], $nesting)
+    })($nesting[0])
   })($nesting[0], null, $nesting);
 };
diff --git a/opal/master/erb.min.js b/opal/master/erb.min.js
index 3d56040a..c1e2cf86 100644
--- a/opal/master/erb.min.js
+++ b/opal/master/erb.min.js
@@ -1 +1 @@
-Opal.modules.template=function(Opal){function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$klass=Opal.klass,$hash2=Opal.hash2,$truthy=Opal.truthy,$send=Opal.send,$alias=Opal.alias;return Opal.add_stubs(["$[]","$[]=","$-","$keys","$attr_reader","$instance_exec","$new","$to_proc","$<<","$join"]),function($Template_render$6,$Template_inspect$5){var $Template_initialize$4,$Template_render$6=$klass($Template_render$6,null,"Template"),$nesting=[$Template_render$6].concat($Template_inspect$5);return $Template_render$6.$$prototype.name=$Template_render$6.$$prototype.body=nil,$Template_render$6._cache=$hash2([],{}),Opal.defs($Template_render$6,"$[]",$Template_inspect$5=function(name){var $ret_or_1;return null==this._cache&&(this._cache=nil),$truthy($ret_or_1=this._cache["$[]"](name))?$ret_or_1:this._cache["$[]"]("templates/"+name)},$Template_inspect$5.$$arity=1),Opal.defs($Template_render$6,"$[]=",$Template_inspect$5=function(name,instance){var $writer;return null==this._cache&&(this._cache=nil),$writer=[name,instance],$send(this._cache,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]},$Template_inspect$5.$$arity=2),Opal.defs($Template_render$6,"$paths",$Template_inspect$5=function(){return null==this._cache&&(this._cache=nil),this._cache.$keys()},$Template_inspect$5.$$arity=0),$Template_render$6.$attr_reader("body"),Opal.def($Template_render$6,"$initialize",$Template_initialize$4=function(name){var $writer,$iter=$Template_initialize$4.$$p,$a=$iter||nil;return $iter&&($Template_initialize$4.$$p=null),$iter&&($Template_initialize$4.$$p=null),$a=[name,$a],this.name=$a[0],this.body=$a[1],$writer=[name,this],$send($$($nesting,"Template"),"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]},$Template_initialize$4.$$arity=1),Opal.def($Template_render$6,"$inspect",$Template_inspect$5=function(){return"#<Template: '"+this.name+"'>"},$Template_inspect$5.$$arity=0),Opal.def($Template_render$6,"$render",$Template_render$6=function(ctx){return null==ctx&&(ctx=this),$send(ctx,"instance_exec",[$$($nesting,"OutputBuffer").$new()],this.body.$to_proc())},$Template_render$6.$$arity=-1),function($OutputBuffer_join$9,$OutputBuffer_append$8){$OutputBuffer_join$9=$klass($OutputBuffer_join$9,null,"OutputBuffer"),[$OutputBuffer_join$9].concat($OutputBuffer_append$8);return $OutputBuffer_join$9.$$prototype.buffer=nil,Opal.def($OutputBuffer_join$9,"$initialize",$OutputBuffer_append$8=function(){return this.buffer=[]},$OutputBuffer_append$8.$$arity=0),Opal.def($OutputBuffer_join$9,"$append",$OutputBuffer_append$8=function(str){return this.buffer["$<<"](str)},$OutputBuffer_append$8.$$arity=1),$alias($OutputBuffer_join$9,"append=","append"),Opal.def($OutputBuffer_join$9,"$join",$OutputBuffer_join$9=function(){return this.buffer.$join()},$OutputBuffer_join$9.$$arity=0),nil&&"join"}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules.erb=function(Opal){var self=Opal.top,$nesting=[],$klass=(Opal.nil,Opal.$$$,Opal.$$,Opal.klass),$module=Opal.module,$alias=Opal.alias;return Opal.add_stubs(["$require","$module_function"]),self.$require("template"),function($base,$nesting){$nesting=[$klass($base,null,"ERB")].concat($nesting);return function(self,$Util_html_escape$1){var self=$module(self,"Util"),escapes=([self].concat($Util_html_escape$1),{"&":"&amp;","<":"&lt;",">":"&gt;",'"':"&quot;","'":"&#39;"}),escape_regexp=/[&<>"']/g;return Opal.def(self,"$html_escape",$Util_html_escape$1=function(str){return(""+str).replace(escape_regexp,function(m){return escapes[m]})},$Util_html_escape$1.$$arity=1),$alias(self,"h","html_escape"),self.$module_function("h"),self.$module_function("html_escape")}($nesting[0],$nesting)}($nesting[0],$nesting)};
+Opal.modules.template=function(Opal){var $nesting=[],nil=Opal.nil,$klass=Opal.klass,$hash2=Opal.hash2,$truthy=Opal.truthy,$defs=Opal.defs,$send=Opal.send,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$def=Opal.def,$alias=Opal.alias;return Opal.add_stubs("[],[]=,-,keys,attr_reader,instance_exec,new,to_proc,<<,join"),function($base,$super,$parent_nesting){var self=$klass($base,null,"Template"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;return $proto.name=$proto.body=nil,self._cache=$hash2([],{}),$defs(self,"$[]",(function(name){var $ret_or_1;return null==this._cache&&(this._cache=nil),$truthy($ret_or_1=this._cache["$[]"](name))?$ret_or_1:this._cache["$[]"]("templates/"+name)}),1),$defs(self,"$[]=",(function(name,instance){var $writer;return null==this._cache&&(this._cache=nil),$writer=[name,instance],$send(this._cache,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]}),2),$defs(self,"$paths",(function(){return null==this._cache&&(this._cache=nil),this._cache.$keys()}),0),self.$attr_reader("body"),$def(self,"$initialize",(function $$initialize(name){var $a,$writer,body=$$initialize.$$p||nil;return delete $$initialize.$$p,$a=[name,body],this.name=$a[0],this.body=$a[1],$writer=[name,this],$send($$("Template"),"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]}),1),$def(self,"$inspect",(function(){return"#<Template: '"+this.name+"'>"}),0),$def(self,"$render",(function(ctx){return null==ctx&&(ctx=this),$send(ctx,"instance_exec",[$$("OutputBuffer").$new()],this.body.$to_proc())}),-1),function($base,$super){var self=$klass($base,null,"OutputBuffer");return self.$$prototype.buffer=nil,$def(self,"$initialize",(function(){return this.buffer=[]}),0),$def(self,"$append",(function(str){return this.buffer["$<<"](str)}),1),$def(self,"$join",(function(){return this.buffer.$join()}),0),$alias(self,"append=","append")}($nesting[0])}($nesting[0],0,$nesting)},Opal.modules.erb=function(Opal){var $base,$parent_nesting,self=Opal.top,$nesting=[],$klass=(Opal.nil,Opal.klass),$module=Opal.module,$def=Opal.def,$alias=Opal.alias;return Opal.add_stubs("require,module_function"),self.$require("template"),$base=$nesting[0],$parent_nesting=$nesting,function($base){var self=$module($base,"Util"),escapes={"&":"&amp;","<":"&lt;",">":"&gt;",'"':"&quot;","'":"&#39;"},escape_regexp=/[&<>"']/g;return $def(self,"$html_escape",(function(str){return(""+str).replace(escape_regexp,(function(m){return escapes[m]}))}),1),$alias(self,"h","html_escape"),self.$module_function("h"),self.$module_function("html_escape")}([$klass($base,null,"ERB")].concat($parent_nesting)[0])};
diff --git a/opal/master/erb.min.js.gz b/opal/master/erb.min.js.gz
index ab526c3d..ccc13e31 100644
Binary files a/opal/master/erb.min.js.gz and b/opal/master/erb.min.js.gz differ
diff --git a/opal/master/file.js b/opal/master/file.js
index 62c686f8..85f958b8 100644
--- a/opal/master/file.js
+++ b/opal/master/file.js
@@ -1,7 +1,6 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["file"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$;
+Opal.modules["file"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, nil = Opal.nil;
 
-  Opal.add_stubs(['$warn']);
+  Opal.add_stubs('warn');
   return self.$warn("File is already part of corelib now, you don't need to require it anymore.")
 };
diff --git a/opal/master/file.min.js b/opal/master/file.min.js
index 07d6be83..746717ab 100644
--- a/opal/master/file.min.js
+++ b/opal/master/file.min.js
@@ -1 +1 @@
-Opal.modules.file=function(Opal){var self=Opal.top;Opal.nil,Opal.$$$,Opal.$$;return Opal.add_stubs(["$warn"]),self.$warn("File is already part of corelib now, you don't need to require it anymore.")};
+Opal.modules.file=function(Opal){var self=Opal.top;Opal.nil;return Opal.add_stubs("warn"),self.$warn("File is already part of corelib now, you don't need to require it anymore.")};
diff --git a/opal/master/file.min.js.gz b/opal/master/file.min.js.gz
index 9a464b37..0f82173a 100644
Binary files a/opal/master/file.min.js.gz and b/opal/master/file.min.js.gz differ
diff --git a/opal/master/fileutils.js b/opal/master/fileutils.js
index 647342d0..bb040d8a 100644
--- a/opal/master/fileutils.js
+++ b/opal/master/fileutils.js
@@ -1,6 +1,3 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["fileutils"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$;
-
-  return nil
+Opal.modules["fileutils"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  return Opal.nil;
 };
diff --git a/opal/master/fileutils.min.js b/opal/master/fileutils.min.js
index 81c6243e..b5e96f1b 100644
--- a/opal/master/fileutils.min.js
+++ b/opal/master/fileutils.min.js
@@ -1 +1 @@
-Opal.modules.fileutils=function(Opal){Opal.top;var nil=Opal.nil;Opal.$$$,Opal.$$;return nil};
+Opal.modules.fileutils=function(Opal){return Opal.nil};
diff --git a/opal/master/fileutils.min.js.gz b/opal/master/fileutils.min.js.gz
index 7f26aca5..6ee80c07 100644
Binary files a/opal/master/fileutils.min.js.gz and b/opal/master/fileutils.min.js.gz differ
diff --git a/opal/master/forwardable.js b/opal/master/forwardable.js
index a25bba9d..19abc8ca 100644
--- a/opal/master/forwardable.js
+++ b/opal/master/forwardable.js
@@ -1,191 +1,168 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["forwardable"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $send = Opal.send, $truthy = Opal.truthy, $alias = Opal.alias;
+Opal.modules["forwardable"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $send = Opal.send, $truthy = Opal.truthy, $def = Opal.def, $to_a = Opal.to_a, $alias = Opal.alias;
 
-  Opal.add_stubs(['$each', '$respond_to?', '$def_instance_delegator', '$include?', '$start_with?', '$to_s', '$define_method', '$__send__', '$instance_variable_get', '$to_proc', '$def_single_delegator', '$define_singleton_method']);
+  Opal.add_stubs('each,respond_to?,def_instance_delegator,include?,start_with?,to_s,define_method,__send__,instance_variable_get,to_proc,def_single_delegator,define_singleton_method');
   
-  (function($base, $parent_nesting) {
+  (function($base) {
     var self = $module($base, 'Forwardable');
 
-    var $nesting = [self].concat($parent_nesting), $Forwardable_instance_delegate$1, $Forwardable_def_instance_delegators$4, $Forwardable_def_instance_delegator$6;
-
     
     
-    Opal.def(self, '$instance_delegate', $Forwardable_instance_delegate$1 = function $$instance_delegate(hash) {
-      var $$2, self = this;
+    
+    $def(self, '$instance_delegate', function $$instance_delegate(hash) {
+      var self = this;
 
-      return $send(hash, 'each', [], ($$2 = function(methods, accessor){var self = $$2.$$s == null ? this : $$2.$$s, $$3;
+      return $send(hash, 'each', [], function $$1(methods, accessor){var self = $$1.$$s == null ? this : $$1.$$s;
 
         
         
-        if (methods == null) {
-          methods = nil;
-        };
+        if (methods == null) methods = nil;;
         
-        if (accessor == null) {
-          accessor = nil;
-        };
-        if ($truthy(methods['$respond_to?']("each"))) {
-        } else {
+        if (accessor == null) accessor = nil;;
+        if (!$truthy(methods['$respond_to?']("each"))) {
           methods = [methods]
         };
-        return $send(methods, 'each', [], ($$3 = function(method){var self = $$3.$$s == null ? this : $$3.$$s;
+        return $send(methods, 'each', [], function $$2(method){var self = $$2.$$s == null ? this : $$2.$$s;
 
           
           
-          if (method == null) {
-            method = nil;
-          };
-          return self.$def_instance_delegator(accessor, method);}, $$3.$$s = self, $$3.$$arity = 1, $$3));}, $$2.$$s = self, $$2.$$arity = 2, $$2))
-    }, $Forwardable_instance_delegate$1.$$arity = 1);
+          if (method == null) method = nil;;
+          return self.$def_instance_delegator(accessor, method);}, {$$arity: 1, $$s: self});}, {$$arity: 2, $$s: self})
+    }, 1);
     
-    Opal.def(self, '$def_instance_delegators', $Forwardable_def_instance_delegators$4 = function $$def_instance_delegators(accessor, $a) {
-      var $post_args, methods, $$5, self = this;
+    $def(self, '$def_instance_delegators', function $$def_instance_delegators(accessor, $a) {
+      var $post_args, methods, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 1, arguments.length);
+      $post_args = Opal.slice.call(arguments, 1);
       
       methods = $post_args;;
-      return $send(methods, 'each', [], ($$5 = function(method){var self = $$5.$$s == null ? this : $$5.$$s;
+      return $send(methods, 'each', [], function $$3(method){var self = $$3.$$s == null ? this : $$3.$$s;
 
         
         
-        if (method == null) {
-          method = nil;
-        };
+        if (method == null) method = nil;;
         if ($truthy(["__send__", "__id__"]['$include?'](method))) {
-          return nil;};
-        return self.$def_instance_delegator(accessor, method);}, $$5.$$s = self, $$5.$$arity = 1, $$5));
-    }, $Forwardable_def_instance_delegators$4.$$arity = -2);
+          return nil;
+        };
+        return self.$def_instance_delegator(accessor, method);}, {$$arity: 1, $$s: self});
+    }, -2);
     
-    Opal.def(self, '$def_instance_delegator', $Forwardable_def_instance_delegator$6 = function $$def_instance_delegator(accessor, method, ali) {
-      var $$7, $$8, $iter = $Forwardable_def_instance_delegator$6.$$p, $yield = $iter || nil, self = this;
+    $def(self, '$def_instance_delegator', function $$def_instance_delegator(accessor, method, ali) {
+      var $yield = $$def_instance_delegator.$$p || nil, self = this;
 
-      if ($iter) $Forwardable_def_instance_delegator$6.$$p = null;
+      delete $$def_instance_delegator.$$p;
       
       
-      if (ali == null) {
-        ali = method;
-      };
+      if (ali == null) ali = method;;
       if ($truthy(accessor.$to_s()['$start_with?']("@"))) {
-        return $send(self, 'define_method', [ali], ($$7 = function($a){var self = $$7.$$s == null ? this : $$7.$$s, $iter = $$7.$$p, block = $iter || nil, $post_args, args;
+        return $send(self, 'define_method', [ali], function $$4($a){var block = $$4.$$p || nil, $post_args, args, self = $$4.$$s == null ? this : $$4.$$s;
 
+          delete $$4.$$p;
           
+          ;
           
-          if ($iter) $$7.$$p = null;;
-          
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
           args = $post_args;;
-          return $send(self.$instance_variable_get(accessor), '__send__', [method].concat(Opal.to_a(args)), block.$to_proc());}, $$7.$$s = self, $$7.$$arity = -1, $$7))
+          return $send(self.$instance_variable_get(accessor), '__send__', [method].concat($to_a(args)), block.$to_proc());}, {$$arity: -1, $$s: self})
       } else {
-        return $send(self, 'define_method', [ali], ($$8 = function($a){var self = $$8.$$s == null ? this : $$8.$$s, $iter = $$8.$$p, block = $iter || nil, $post_args, args;
+        return $send(self, 'define_method', [ali], function $$5($a){var block = $$5.$$p || nil, $post_args, args, self = $$5.$$s == null ? this : $$5.$$s;
 
+          delete $$5.$$p;
           
+          ;
           
-          if ($iter) $$8.$$p = null;;
-          
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
           args = $post_args;;
-          return $send(self.$__send__(accessor), '__send__', [method].concat(Opal.to_a(args)), block.$to_proc());}, $$8.$$s = self, $$8.$$arity = -1, $$8))
+          return $send(self.$__send__(accessor), '__send__', [method].concat($to_a(args)), block.$to_proc());}, {$$arity: -1, $$s: self})
       };
-    }, $Forwardable_def_instance_delegator$6.$$arity = -3);
+    }, -3);
     $alias(self, "delegate", "instance_delegate");
     $alias(self, "def_delegators", "def_instance_delegators");
     return $alias(self, "def_delegator", "def_instance_delegator");
-  })($nesting[0], $nesting);
-  return (function($base, $parent_nesting) {
+  })($nesting[0]);
+  return (function($base) {
     var self = $module($base, 'SingleForwardable');
 
-    var $nesting = [self].concat($parent_nesting), $SingleForwardable_single_delegate$9, $SingleForwardable_def_single_delegators$12, $SingleForwardable_def_single_delegator$14;
-
     
     
-    Opal.def(self, '$single_delegate', $SingleForwardable_single_delegate$9 = function $$single_delegate(hash) {
-      var $$10, self = this;
+    
+    $def(self, '$single_delegate', function $$single_delegate(hash) {
+      var self = this;
 
-      return $send(hash, 'each', [], ($$10 = function(methods, accessor){var self = $$10.$$s == null ? this : $$10.$$s, $$11;
+      return $send(hash, 'each', [], function $$6(methods, accessor){var self = $$6.$$s == null ? this : $$6.$$s;
 
         
         
-        if (methods == null) {
-          methods = nil;
-        };
+        if (methods == null) methods = nil;;
         
-        if (accessor == null) {
-          accessor = nil;
-        };
-        if ($truthy(methods['$respond_to?']("each"))) {
-        } else {
+        if (accessor == null) accessor = nil;;
+        if (!$truthy(methods['$respond_to?']("each"))) {
           methods = [methods]
         };
-        return $send(methods, 'each', [], ($$11 = function(method){var self = $$11.$$s == null ? this : $$11.$$s;
+        return $send(methods, 'each', [], function $$7(method){var self = $$7.$$s == null ? this : $$7.$$s;
 
           
           
-          if (method == null) {
-            method = nil;
-          };
-          return self.$def_single_delegator(accessor, method);}, $$11.$$s = self, $$11.$$arity = 1, $$11));}, $$10.$$s = self, $$10.$$arity = 2, $$10))
-    }, $SingleForwardable_single_delegate$9.$$arity = 1);
+          if (method == null) method = nil;;
+          return self.$def_single_delegator(accessor, method);}, {$$arity: 1, $$s: self});}, {$$arity: 2, $$s: self})
+    }, 1);
     
-    Opal.def(self, '$def_single_delegators', $SingleForwardable_def_single_delegators$12 = function $$def_single_delegators(accessor, $a) {
-      var $post_args, methods, $$13, self = this;
+    $def(self, '$def_single_delegators', function $$def_single_delegators(accessor, $a) {
+      var $post_args, methods, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 1, arguments.length);
+      $post_args = Opal.slice.call(arguments, 1);
       
       methods = $post_args;;
-      return $send(methods, 'each', [], ($$13 = function(method){var self = $$13.$$s == null ? this : $$13.$$s;
+      return $send(methods, 'each', [], function $$8(method){var self = $$8.$$s == null ? this : $$8.$$s;
 
         
         
-        if (method == null) {
-          method = nil;
-        };
+        if (method == null) method = nil;;
         if ($truthy(["__send__", "__id__"]['$include?'](method))) {
-          return nil;};
-        return self.$def_single_delegator(accessor, method);}, $$13.$$s = self, $$13.$$arity = 1, $$13));
-    }, $SingleForwardable_def_single_delegators$12.$$arity = -2);
+          return nil;
+        };
+        return self.$def_single_delegator(accessor, method);}, {$$arity: 1, $$s: self});
+    }, -2);
     
-    Opal.def(self, '$def_single_delegator', $SingleForwardable_def_single_delegator$14 = function $$def_single_delegator(accessor, method, ali) {
-      var $$15, $$16, $iter = $SingleForwardable_def_single_delegator$14.$$p, $yield = $iter || nil, self = this;
+    $def(self, '$def_single_delegator', function $$def_single_delegator(accessor, method, ali) {
+      var $yield = $$def_single_delegator.$$p || nil, self = this;
 
-      if ($iter) $SingleForwardable_def_single_delegator$14.$$p = null;
+      delete $$def_single_delegator.$$p;
       
       
-      if (ali == null) {
-        ali = method;
-      };
+      if (ali == null) ali = method;;
       if ($truthy(accessor.$to_s()['$start_with?']("@"))) {
-        return $send(self, 'define_singleton_method', [ali], ($$15 = function($a){var self = $$15.$$s == null ? this : $$15.$$s, $iter = $$15.$$p, block = $iter || nil, $post_args, args;
+        return $send(self, 'define_singleton_method', [ali], function $$9($a){var block = $$9.$$p || nil, $post_args, args, self = $$9.$$s == null ? this : $$9.$$s;
 
+          delete $$9.$$p;
           
+          ;
           
-          if ($iter) $$15.$$p = null;;
-          
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
           args = $post_args;;
-          return $send(self.$instance_variable_get(accessor), '__send__', [method].concat(Opal.to_a(args)), block.$to_proc());}, $$15.$$s = self, $$15.$$arity = -1, $$15))
+          return $send(self.$instance_variable_get(accessor), '__send__', [method].concat($to_a(args)), block.$to_proc());}, {$$arity: -1, $$s: self})
       } else {
-        return $send(self, 'define_singleton_method', [ali], ($$16 = function($a){var self = $$16.$$s == null ? this : $$16.$$s, $iter = $$16.$$p, block = $iter || nil, $post_args, args;
+        return $send(self, 'define_singleton_method', [ali], function $$10($a){var block = $$10.$$p || nil, $post_args, args, self = $$10.$$s == null ? this : $$10.$$s;
 
+          delete $$10.$$p;
           
+          ;
           
-          if ($iter) $$16.$$p = null;;
-          
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
           args = $post_args;;
-          return $send(self.$__send__(accessor), '__send__', [method].concat(Opal.to_a(args)), block.$to_proc());}, $$16.$$s = self, $$16.$$arity = -1, $$16))
+          return $send(self.$__send__(accessor), '__send__', [method].concat($to_a(args)), block.$to_proc());}, {$$arity: -1, $$s: self})
       };
-    }, $SingleForwardable_def_single_delegator$14.$$arity = -3);
+    }, -3);
     $alias(self, "delegate", "single_delegate");
     $alias(self, "def_delegators", "def_single_delegators");
     return $alias(self, "def_delegator", "def_single_delegator");
-  })($nesting[0], $nesting);
+  })($nesting[0]);
 };
diff --git a/opal/master/forwardable.min.js b/opal/master/forwardable.min.js
index e7a23c80..591724b0 100644
--- a/opal/master/forwardable.min.js
+++ b/opal/master/forwardable.min.js
@@ -1 +1 @@
-Opal.modules.forwardable=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$module=(Opal.$$$,Opal.$$,Opal.module),$send=Opal.send,$truthy=Opal.truthy,$alias=Opal.alias;return Opal.add_stubs(["$each","$respond_to?","$def_instance_delegator","$include?","$start_with?","$to_s","$define_method","$__send__","$instance_variable_get","$to_proc","$def_single_delegator","$define_singleton_method"]),function(self,$Forwardable_def_instance_delegators$4){var $Forwardable_def_instance_delegator$6;[self=$module(self,"Forwardable")].concat($Forwardable_def_instance_delegators$4),Opal.def(self,"$instance_delegate",$Forwardable_def_instance_delegators$4=function(hash){var $$2;return $send(hash,"each",[],(($$2=function(methods,accessor){var $$3,self=null==$$2.$$s?this:$$2.$$s;return null==methods&&(methods=nil),null==accessor&&(accessor=nil),$truthy(methods["$respond_to?"]("each"))||(methods=[methods]),$send(methods,"each",[],(($$3=function(method){var self=null==$$3.$$s?this:$$3.$$s;return null==method&&(method=nil),self.$def_instance_delegator(accessor,method)}).$$s=self,$$3.$$arity=1,$$3))}).$$s=this,$$2.$$arity=2,$$2))},$Forwardable_def_instance_delegators$4.$$arity=1),Opal.def(self,"$def_instance_delegators",$Forwardable_def_instance_delegators$4=function(accessor,$a){var $$5,$post_args=Opal.slice.call(arguments,1,arguments.length);return $send($post_args,"each",[],(($$5=function(method){var self=null==$$5.$$s?this:$$5.$$s;return null==method&&(method=nil),$truthy(["__send__","__id__"]["$include?"](method))?nil:self.$def_instance_delegator(accessor,method)}).$$s=this,$$5.$$arity=1,$$5))},$Forwardable_def_instance_delegators$4.$$arity=-2),Opal.def(self,"$def_instance_delegator",$Forwardable_def_instance_delegator$6=function(accessor,method,ali){var $$7,$$8,$iter=$Forwardable_def_instance_delegator$6.$$p;return $iter&&($Forwardable_def_instance_delegator$6.$$p=null),null==ali&&(ali=method),$truthy(accessor.$to_s()["$start_with?"]("@"))?$send(this,"define_method",[ali],(($$7=function($a){var self=null==$$7.$$s?this:$$7.$$s,args=$$7.$$p,block=args||nil;return args&&($$7.$$p=null),args=Opal.slice.call(arguments,0,arguments.length),$send(self.$instance_variable_get(accessor),"__send__",[method].concat(Opal.to_a(args)),block.$to_proc())}).$$s=this,$$7.$$arity=-1,$$7)):$send(this,"define_method",[ali],(($$8=function($a){var self=null==$$8.$$s?this:$$8.$$s,args=$$8.$$p,block=args||nil;return args&&($$8.$$p=null),args=Opal.slice.call(arguments,0,arguments.length),$send(self.$__send__(accessor),"__send__",[method].concat(Opal.to_a(args)),block.$to_proc())}).$$s=this,$$8.$$arity=-1,$$8))},$Forwardable_def_instance_delegator$6.$$arity=-3),$alias(self,"delegate","instance_delegate"),$alias(self,"def_delegators","def_instance_delegators"),$alias(self,"def_delegator","def_instance_delegator")}($nesting[0],$nesting),function(self,$SingleForwardable_def_single_delegators$12){var $SingleForwardable_def_single_delegator$14,self=$module(self,"SingleForwardable");[self].concat($SingleForwardable_def_single_delegators$12);return Opal.def(self,"$single_delegate",$SingleForwardable_def_single_delegators$12=function(hash){var $$10;return $send(hash,"each",[],(($$10=function(methods,accessor){var $$11,self=null==$$10.$$s?this:$$10.$$s;return null==methods&&(methods=nil),null==accessor&&(accessor=nil),$truthy(methods["$respond_to?"]("each"))||(methods=[methods]),$send(methods,"each",[],(($$11=function(method){var self=null==$$11.$$s?this:$$11.$$s;return null==method&&(method=nil),self.$def_single_delegator(accessor,method)}).$$s=self,$$11.$$arity=1,$$11))}).$$s=this,$$10.$$arity=2,$$10))},$SingleForwardable_def_single_delegators$12.$$arity=1),Opal.def(self,"$def_single_delegators",$SingleForwardable_def_single_delegators$12=function(accessor,$a){var $$13,$post_args=Opal.slice.call(arguments,1,arguments.length);return $send($post_args,"each",[],(($$13=function(method){var self=null==$$13.$$s?this:$$13.$$s;return null==method&&(method=nil),$truthy(["__send__","__id__"]["$include?"](method))?nil:self.$def_single_delegator(accessor,method)}).$$s=this,$$13.$$arity=1,$$13))},$SingleForwardable_def_single_delegators$12.$$arity=-2),Opal.def(self,"$def_single_delegator",$SingleForwardable_def_single_delegator$14=function(accessor,method,ali){var $$15,$$16,$iter=$SingleForwardable_def_single_delegator$14.$$p;return $iter&&($SingleForwardable_def_single_delegator$14.$$p=null),null==ali&&(ali=method),$truthy(accessor.$to_s()["$start_with?"]("@"))?$send(this,"define_singleton_method",[ali],(($$15=function($a){var self=null==$$15.$$s?this:$$15.$$s,args=$$15.$$p,block=args||nil;return args&&($$15.$$p=null),args=Opal.slice.call(arguments,0,arguments.length),$send(self.$instance_variable_get(accessor),"__send__",[method].concat(Opal.to_a(args)),block.$to_proc())}).$$s=this,$$15.$$arity=-1,$$15)):$send(this,"define_singleton_method",[ali],(($$16=function($a){var self=null==$$16.$$s?this:$$16.$$s,args=$$16.$$p,block=args||nil;return args&&($$16.$$p=null),args=Opal.slice.call(arguments,0,arguments.length),$send(self.$__send__(accessor),"__send__",[method].concat(Opal.to_a(args)),block.$to_proc())}).$$s=this,$$16.$$arity=-1,$$16))},$SingleForwardable_def_single_delegator$14.$$arity=-3),$alias(self,"delegate","single_delegate"),$alias(self,"def_delegators","def_single_delegators"),$alias(self,"def_delegator","def_single_delegator")}($nesting[0],$nesting)};
+Opal.modules.forwardable=function(Opal){var self,$nesting=[],nil=Opal.nil,$module=Opal.module,$send=Opal.send,$truthy=Opal.truthy,$def=Opal.def,$to_a=Opal.to_a,$alias=Opal.alias;return Opal.add_stubs("each,respond_to?,def_instance_delegator,include?,start_with?,to_s,define_method,__send__,instance_variable_get,to_proc,def_single_delegator,define_singleton_method"),self=$module($nesting[0],"Forwardable"),$def(self,"$instance_delegate",(function(hash){return $send(hash,"each",[],(function $$1(methods,accessor){var self=null==$$1.$$s?this:$$1.$$s;return null==methods&&(methods=nil),null==accessor&&(accessor=nil),$truthy(methods["$respond_to?"]("each"))||(methods=[methods]),$send(methods,"each",[],(function $$2(method){return null==method&&(method=nil),(null==$$2.$$s?this:$$2.$$s).$def_instance_delegator(accessor,method)}),{$$arity:1,$$s:self})}),{$$arity:2,$$s:this})}),1),$def(self,"$def_instance_delegators",(function(accessor,$a){var $post_args,self=this;return $post_args=Opal.slice.call(arguments,1),$send($post_args,"each",[],(function $$3(method){var self=null==$$3.$$s?this:$$3.$$s;return null==method&&(method=nil),$truthy(["__send__","__id__"]["$include?"](method))?nil:self.$def_instance_delegator(accessor,method)}),{$$arity:1,$$s:self})}),-2),$def(self,"$def_instance_delegator",(function $$def_instance_delegator(accessor,method,ali){return delete $$def_instance_delegator.$$p,null==ali&&(ali=method),$truthy(accessor.$to_s()["$start_with?"]("@"))?$send(this,"define_method",[ali],(function $$4($a){var args,block=$$4.$$p||nil,self=null==$$4.$$s?this:$$4.$$s;return delete $$4.$$p,args=Opal.slice.call(arguments),$send(self.$instance_variable_get(accessor),"__send__",[method].concat($to_a(args)),block.$to_proc())}),{$$arity:-1,$$s:this}):$send(this,"define_method",[ali],(function $$5($a){var args,block=$$5.$$p||nil,self=null==$$5.$$s?this:$$5.$$s;return delete $$5.$$p,args=Opal.slice.call(arguments),$send(self.$__send__(accessor),"__send__",[method].concat($to_a(args)),block.$to_proc())}),{$$arity:-1,$$s:this})}),-3),$alias(self,"delegate","instance_delegate"),$alias(self,"def_delegators","def_instance_delegators"),$alias(self,"def_delegator","def_instance_delegator"),function($base){var self=$module($base,"SingleForwardable");return $def(self,"$single_delegate",(function(hash){return $send(hash,"each",[],(function $$6(methods,accessor){var self=null==$$6.$$s?this:$$6.$$s;return null==methods&&(methods=nil),null==accessor&&(accessor=nil),$truthy(methods["$respond_to?"]("each"))||(methods=[methods]),$send(methods,"each",[],(function $$7(method){return null==method&&(method=nil),(null==$$7.$$s?this:$$7.$$s).$def_single_delegator(accessor,method)}),{$$arity:1,$$s:self})}),{$$arity:2,$$s:this})}),1),$def(self,"$def_single_delegators",(function(accessor,$a){var $post_args,self=this;return $post_args=Opal.slice.call(arguments,1),$send($post_args,"each",[],(function $$8(method){var self=null==$$8.$$s?this:$$8.$$s;return null==method&&(method=nil),$truthy(["__send__","__id__"]["$include?"](method))?nil:self.$def_single_delegator(accessor,method)}),{$$arity:1,$$s:self})}),-2),$def(self,"$def_single_delegator",(function $$def_single_delegator(accessor,method,ali){return delete $$def_single_delegator.$$p,null==ali&&(ali=method),$truthy(accessor.$to_s()["$start_with?"]("@"))?$send(this,"define_singleton_method",[ali],(function $$9($a){var args,block=$$9.$$p||nil,self=null==$$9.$$s?this:$$9.$$s;return delete $$9.$$p,args=Opal.slice.call(arguments),$send(self.$instance_variable_get(accessor),"__send__",[method].concat($to_a(args)),block.$to_proc())}),{$$arity:-1,$$s:this}):$send(this,"define_singleton_method",[ali],(function $$10($a){var args,block=$$10.$$p||nil,self=null==$$10.$$s?this:$$10.$$s;return delete $$10.$$p,args=Opal.slice.call(arguments),$send(self.$__send__(accessor),"__send__",[method].concat($to_a(args)),block.$to_proc())}),{$$arity:-1,$$s:this})}),-3),$alias(self,"delegate","single_delegate"),$alias(self,"def_delegators","def_single_delegators"),$alias(self,"def_delegator","def_single_delegator")}($nesting[0])};
diff --git a/opal/master/forwardable.min.js.gz b/opal/master/forwardable.min.js.gz
index b80e2307..48d16d02 100644
Binary files a/opal/master/forwardable.min.js.gz and b/opal/master/forwardable.min.js.gz differ
diff --git a/opal/master/gjs.js b/opal/master/gjs.js
index 27c510d8..768992b3 100644
--- a/opal/master/gjs.js
+++ b/opal/master/gjs.js
@@ -1,6 +1,5 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["gjs/io"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$;
+Opal.modules["gjs/io"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var nil = Opal.nil;
 
   
   /* global imports */;
@@ -23,24 +22,28 @@ Opal.modules["gjs/io"] = function(Opal) {
     stderr.write_chars(buf, buf.length);
     stderr.flush();
   }
+
+  Opal.gvars.stdin.read_proc = function(_s) {
+    var out = stdin.read_line();
+    if (out[0] == GLib.IOStatus.EOF) return nil;
+    return out[1].toString();
+  }
 ;
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["gjs/kernel"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$;
+Opal.modules["gjs/kernel"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $const_set = Opal.const_set;
 
   
   /* global ARGV */;
-  Opal.const_set($nesting[0], 'ARGV', ARGV);
+  $const_set($nesting[0], 'ARGV', ARGV);
   return Opal.exit = imports.system.exit;;
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["gjs"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$;
+Opal.modules["gjs"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, nil = Opal.nil;
 
-  Opal.add_stubs(['$require']);
+  Opal.add_stubs('require');
   
   self.$require("gjs/io");
   return self.$require("gjs/kernel");
diff --git a/opal/master/gjs.min.js b/opal/master/gjs.min.js
index 0de09463..b7256da6 100644
--- a/opal/master/gjs.min.js
+++ b/opal/master/gjs.min.js
@@ -1 +1 @@
-Opal.modules["gjs/io"]=function(Opal){Opal.top,Opal.nil,Opal.$$$,Opal.$$;var GLib=imports.gi.GLib,ByteArray=imports.byteArray,stdout=(GLib.IOChannel.unix_new(0),GLib.IOChannel.unix_new(1)),stderr=GLib.IOChannel.unix_new(2);Opal.gvars.stdout.write_proc=function(buf){buf=ByteArray.fromString(buf);stdout.write_chars(buf,buf.length),stdout.flush()},Opal.gvars.stderr.write_proc=function(buf){buf=ByteArray.fromString(buf);stderr.write_chars(buf,buf.length),stderr.flush()}},Opal.modules["gjs/kernel"]=function(Opal){Opal.top,Opal.nil,Opal.$$$,Opal.$$;return Opal.const_set([][0],"ARGV",ARGV),Opal.exit=imports.system.exit},Opal.modules.gjs=function(Opal){var self=Opal.top;Opal.nil,Opal.$$$,Opal.$$;return Opal.add_stubs(["$require"]),self.$require("gjs/io"),self.$require("gjs/kernel")};
+Opal.modules["gjs/io"]=function(Opal){var nil=Opal.nil,GLib=imports.gi.GLib,ByteArray=imports.byteArray,stdin=GLib.IOChannel.unix_new(0),stdout=GLib.IOChannel.unix_new(1),stderr=GLib.IOChannel.unix_new(2);Opal.gvars.stdout.write_proc=function(s){var buf=ByteArray.fromString(s);stdout.write_chars(buf,buf.length),stdout.flush()},Opal.gvars.stderr.write_proc=function(s){var buf=ByteArray.fromString(s);stderr.write_chars(buf,buf.length),stderr.flush()},Opal.gvars.stdin.read_proc=function(_s){var out=stdin.read_line();return out[0]==GLib.IOStatus.EOF?nil:out[1].toString()}},Opal.modules["gjs/kernel"]=function(Opal){Opal.nil;return(0,Opal.const_set)([][0],"ARGV",ARGV),Opal.exit=imports.system.exit},Opal.modules.gjs=function(Opal){var self=Opal.top;Opal.nil;return Opal.add_stubs("require"),self.$require("gjs/io"),self.$require("gjs/kernel")};
diff --git a/opal/master/gjs.min.js.gz b/opal/master/gjs.min.js.gz
index f4c5c10c..3b7cfa11 100644
Binary files a/opal/master/gjs.min.js.gz and b/opal/master/gjs.min.js.gz differ
diff --git a/opal/master/headless_chrome.js b/opal/master/headless_chrome.js
index 780011cb..c9613ae8 100644
--- a/opal/master/headless_chrome.js
+++ b/opal/master/headless_chrome.js
@@ -1,6 +1,5 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["headless_chrome"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$;
+Opal.modules["headless_chrome"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var nil = Opal.nil;
 
   
   Opal.exit = function(code) {
diff --git a/opal/master/headless_chrome.min.js b/opal/master/headless_chrome.min.js
index b40e77d1..20ffccd9 100644
--- a/opal/master/headless_chrome.min.js
+++ b/opal/master/headless_chrome.min.js
@@ -1 +1 @@
-Opal.modules.headless_chrome=function(Opal){Opal.top,Opal.nil,Opal.$$$,Opal.$$;Opal.exit=function(code){void 0===window.OPAL_EXIT_CODE&&(window.OPAL_EXIT_CODE=code)}};
+Opal.modules.headless_chrome=function(Opal){Opal.nil;Opal.exit=function(code){void 0===window.OPAL_EXIT_CODE&&(window.OPAL_EXIT_CODE=code)}};
diff --git a/opal/master/headless_chrome.min.js.gz b/opal/master/headless_chrome.min.js.gz
index c1a7c55e..1e313b6d 100644
Binary files a/opal/master/headless_chrome.min.js.gz and b/opal/master/headless_chrome.min.js.gz differ
diff --git a/opal/master/iconv.js b/opal/master/iconv.js
index 07d43274..809b4625 100644
--- a/opal/master/iconv.js
+++ b/opal/master/iconv.js
@@ -1,6 +1,3 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["iconv"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$;
-
-  return nil
+Opal.modules["iconv"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  return Opal.nil;
 };
diff --git a/opal/master/iconv.min.js b/opal/master/iconv.min.js
index e3b10942..2190d741 100644
--- a/opal/master/iconv.min.js
+++ b/opal/master/iconv.min.js
@@ -1 +1 @@
-Opal.modules.iconv=function(Opal){Opal.top;var nil=Opal.nil;Opal.$$$,Opal.$$;return nil};
+Opal.modules.iconv=function(Opal){return Opal.nil};
diff --git a/opal/master/iconv.min.js.gz b/opal/master/iconv.min.js.gz
index b4cc5ca3..1c42245c 100644
Binary files a/opal/master/iconv.min.js.gz and b/opal/master/iconv.min.js.gz differ
diff --git a/opal/master/js.js b/opal/master/js.js
index 8da73ce4..6bff653e 100644
--- a/opal/master/js.js
+++ b/opal/master/js.js
@@ -1,112 +1,103 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["js"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $truthy = Opal.truthy, $alias = Opal.alias;
+Opal.modules["js"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $def = Opal.def, $truthy = Opal.truthy, $alias = Opal.alias;
 
-  Opal.add_stubs(['$insert', '$<<', '$global', '$extend']);
-  return (function($base, $parent_nesting) {
+  Opal.add_stubs('insert,<<,global,extend');
+  return (function($base) {
     var self = $module($base, 'JS');
 
-    var $nesting = [self].concat($parent_nesting), $JS_delete$1, $JS_global$2, $JS_in$3, $JS_instanceof$4, $JS_new$5, $JS_new$6, $JS_typeof$7, $JS_void$8, $JS_call$9, $JS_$$$10;
-
     
     
-    Opal.def(self, '$delete', $JS_delete$1 = function(object, property) {
-      var self = this;
-
+    
+    $def(self, '$delete', function $JS_delete$1(object, property) {
+      
       return delete object[property]
-    }, $JS_delete$1.$$arity = 2);
+    }, 2);
     
-    Opal.def(self, '$global', $JS_global$2 = function $$global() {
-      var self = this;
-
+    $def(self, '$global', function $$global() {
+      
       return Opal.global;
-    }, $JS_global$2.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$in', $JS_in$3 = function(property, object) {
-      var self = this;
-
+    $def(self, '$in', function $JS_in$2(property, object) {
+      
       return property in object
-    }, $JS_in$3.$$arity = 2);
+    }, 2);
     
-    Opal.def(self, '$instanceof', $JS_instanceof$4 = function(value, func) {
-      var self = this;
-
+    $def(self, '$instanceof', function $JS_instanceof$3(value, func) {
+      
       return value instanceof func
-    }, $JS_instanceof$4.$$arity = 2);
+    }, 2);
     if ($truthy(typeof Function.prototype.bind == 'function')) {
       
-      Opal.def(self, '$new', $JS_new$5 = function(func, $a) {
-        var $iter = $JS_new$5.$$p, block = $iter || nil, $post_args, args, self = this;
+      $def(self, '$new', function $JS_new$4(func, $a) {
+        var block = $JS_new$4.$$p || nil, $post_args, args;
 
-        if ($iter) $JS_new$5.$$p = null;
-        
+        delete $JS_new$4.$$p;
         
-        if ($iter) $JS_new$5.$$p = null;;
+        ;
         
-        $post_args = Opal.slice.call(arguments, 1, arguments.length);
+        $post_args = Opal.slice.call(arguments, 1);
         
         args = $post_args;;
         args.$insert(0, this);
         if ($truthy(block)) {
-          args['$<<'](block)};
+          args['$<<'](block)
+        };
         return new (func.bind.apply(func, args))();
-      }, $JS_new$5.$$arity = -2)
+      }, -2)
     } else {
       
-      Opal.def(self, '$new', $JS_new$6 = function(func, $a) {
-        var $iter = $JS_new$6.$$p, block = $iter || nil, $post_args, args, self = this, f = nil;
+      $def(self, '$new', function $JS_new$5(func, $a) {
+        var block = $JS_new$5.$$p || nil, $post_args, args, f = nil;
 
-        if ($iter) $JS_new$6.$$p = null;
+        delete $JS_new$5.$$p;
         
+        ;
         
-        if ($iter) $JS_new$6.$$p = null;;
-        
-        $post_args = Opal.slice.call(arguments, 1, arguments.length);
+        $post_args = Opal.slice.call(arguments, 1);
         
         args = $post_args;;
         if ($truthy(block)) {
-          args['$<<'](block)};
+          args['$<<'](block)
+        };
         f = function(){return func.apply(this, args)};
         f["prototype"] = func["prototype"];
         return new f();;
-      }, $JS_new$6.$$arity = -2)
+      }, -2)
     };
     
-    Opal.def(self, '$typeof', $JS_typeof$7 = function(value) {
-      var self = this;
-
+    $def(self, '$typeof', function $JS_typeof$6(value) {
+      
       return typeof value
-    }, $JS_typeof$7.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$void', $JS_void$8 = function(expr) {
-      var self = this;
-
+    $def(self, '$void', function $JS_void$7(expr) {
+      
       return void expr
-    }, $JS_void$8.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$call', $JS_call$9 = function $$call(func, $a) {
-      var $iter = $JS_call$9.$$p, block = $iter || nil, $post_args, args, self = this, g = nil;
+    $def(self, '$call', function $$call(func, $a) {
+      var block = $$call.$$p || nil, $post_args, args, self = this, g = nil;
 
-      if ($iter) $JS_call$9.$$p = null;
+      delete $$call.$$p;
       
+      ;
       
-      if ($iter) $JS_call$9.$$p = null;;
-      
-      $post_args = Opal.slice.call(arguments, 1, arguments.length);
+      $post_args = Opal.slice.call(arguments, 1);
       
       args = $post_args;;
       g = self.$global();
       if ($truthy(block)) {
-        args['$<<'](block)};
+        args['$<<'](block)
+      };
       return g[func].apply(g, args);
-    }, $JS_call$9.$$arity = -2);
-    $alias(self, "method_missing", "call");
+    }, -2);
     
-    Opal.def(self, '$[]', $JS_$$$10 = function(name) {
-      var self = this;
-
+    $def(self, '$[]', function $JS_$$$8(name) {
+      
       return Opal.global[name]
-    }, $JS_$$$10.$$arity = 1);
+    }, 1);
+    $alias(self, "method_missing", "call");
     return self.$extend(self);
-  })($nesting[0], $nesting)
+  })($nesting[0])
 };
diff --git a/opal/master/js.min.js b/opal/master/js.min.js
index b173f319..bd0b567d 100644
--- a/opal/master/js.min.js
+++ b/opal/master/js.min.js
@@ -1 +1 @@
-Opal.modules.js=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$module=(Opal.$$$,Opal.$$,Opal.module),$truthy=Opal.truthy,$alias=Opal.alias;return Opal.add_stubs(["$insert","$<<","$global","$extend"]),function(self,$JS_$$$10){var $JS_new$5,$JS_new$6,$JS_call$9,self=$module(self,"JS");[self].concat($JS_$$$10);return Opal.def(self,"$delete",$JS_$$$10=function(object,property){return delete object[property]},$JS_$$$10.$$arity=2),Opal.def(self,"$global",$JS_$$$10=function(){return Opal.global},$JS_$$$10.$$arity=0),Opal.def(self,"$in",$JS_$$$10=function(property,object){return property in object},$JS_$$$10.$$arity=2),Opal.def(self,"$instanceof",$JS_$$$10=function(value,func){return value instanceof func},$JS_$$$10.$$arity=2),$truthy("function"==typeof Function.prototype.bind)?Opal.def(self,"$new",$JS_new$5=function(func,$a){var args=$JS_new$5.$$p,block=args||nil;return args&&($JS_new$5.$$p=null),args&&($JS_new$5.$$p=null),(args=Opal.slice.call(arguments,1,arguments.length)).$insert(0,this),$truthy(block)&&args["$<<"](block),new(func.bind.apply(func,args))},$JS_new$5.$$arity=-2):Opal.def(self,"$new",$JS_new$6=function(func,$a){var args,f,$post_args=$JS_new$6.$$p,block=$post_args||nil;return $post_args&&($JS_new$6.$$p=null),$post_args&&($JS_new$6.$$p=null),$post_args=Opal.slice.call(arguments,1,arguments.length),args=$post_args,$truthy(block)&&args["$<<"](block),(f=function(){return func.apply(this,args)}).prototype=func.prototype,new f},$JS_new$6.$$arity=-2),Opal.def(self,"$typeof",$JS_$$$10=function(value){return typeof value},$JS_$$$10.$$arity=1),Opal.def(self,"$void",$JS_$$$10=function(expr){},$JS_$$$10.$$arity=1),Opal.def(self,"$call",$JS_call$9=function(func,$a){var args=$JS_call$9.$$p,block=args||nil,g=nil;return args&&($JS_call$9.$$p=null),args&&($JS_call$9.$$p=null),args=Opal.slice.call(arguments,1,arguments.length),g=this.$global(),$truthy(block)&&args["$<<"](block),g[func].apply(g,args)},$JS_call$9.$$arity=-2),$alias(self,"method_missing","call"),Opal.def(self,"$[]",$JS_$$$10=function(name){return Opal.global[name]},$JS_$$$10.$$arity=1),self.$extend(self)}($nesting[0],$nesting)};
+Opal.modules.js=function(Opal){var self,nil=Opal.nil,$module=Opal.module,$def=Opal.def,$truthy=Opal.truthy,$alias=Opal.alias;return Opal.add_stubs("insert,<<,global,extend"),self=$module([][0],"JS"),$def(self,"$delete",(function(object,property){return delete object[property]}),2),$def(self,"$global",(function(){return Opal.global}),0),$def(self,"$in",(function(property,object){return property in object}),2),$def(self,"$instanceof",(function(value,func){return value instanceof func}),2),$truthy("function"==typeof Function.prototype.bind)?$def(self,"$new",(function $JS_new$4(func,$a){var args,block=$JS_new$4.$$p||nil;return delete $JS_new$4.$$p,(args=Opal.slice.call(arguments,1)).$insert(0,this),$truthy(block)&&args["$<<"](block),new(func.bind.apply(func,args))}),-2):$def(self,"$new",(function $JS_new$5(func,$a){var $post_args,args,block=$JS_new$5.$$p||nil,f=nil;return delete $JS_new$5.$$p,$post_args=Opal.slice.call(arguments,1),args=$post_args,$truthy(block)&&args["$<<"](block),(f=function(){return func.apply(this,args)}).prototype=func.prototype,new f}),-2),$def(self,"$typeof",(function(value){return typeof value}),1),$def(self,"$void",(function(expr){}),1),$def(self,"$call",(function $$call(func,$a){var args,block=$$call.$$p||nil,self=this,g=nil;return delete $$call.$$p,args=Opal.slice.call(arguments,1),g=self.$global(),$truthy(block)&&args["$<<"](block),g[func].apply(g,args)}),-2),$def(self,"$[]",(function(name){return Opal.global[name]}),1),$alias(self,"method_missing","call"),self.$extend(self)};
diff --git a/opal/master/js.min.js.gz b/opal/master/js.min.js.gz
index f89feaa3..2a1a31bb 100644
Binary files a/opal/master/js.min.js.gz and b/opal/master/js.min.js.gz differ
diff --git a/opal/master/json.js b/opal/master/json.js
index 1d12f715..3eedf50e 100644
--- a/opal/master/json.js
+++ b/opal/master/json.js
@@ -1,32 +1,16 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["json"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $hash2 = Opal.hash2, $truthy = Opal.truthy;
-
-  Opal.add_stubs(['$raise', '$new', '$push', '$[]=', '$-', '$[]', '$create_id', '$json_create', '$const_get', '$attr_accessor', '$create_id=', '$===', '$parse', '$generate', '$from_object', '$merge', '$to_json', '$responds_to?', '$to_io', '$write', '$to_s', '$to_a', '$strftime']);
+Opal.modules["json"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $Object = Opal.Object, $hash2 = Opal.hash2, $eqeqeq = Opal.eqeqeq, $defs = Opal.defs, $truthy = Opal.truthy, $def = Opal.def;
+
+  Opal.add_stubs('raise,new,push,[]=,-,[],create_id,json_create,const_get,attr_accessor,create_id=,===,parse,generate,from_object,merge,to_json,responds_to?,to_io,write,to_s,to_a,strftime');
   
   (function($base, $parent_nesting) {
     var self = $module($base, 'JSON');
 
-    var $nesting = [self].concat($parent_nesting), $JSON_$$$1, $JSON_parse$2, $JSON_parse$excl$3, $JSON_load$4, $JSON_from_object$5, $JSON_generate$6, $JSON_dump$7, $writer = nil;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $writer = nil;
 
     
-    (function($base, $super, $parent_nesting) {
-      var self = $klass($base, $super, 'JSONError');
-
-      var $nesting = [self].concat($parent_nesting);
-
-      return nil
-    })($nesting[0], $$($nesting, 'StandardError'), $nesting);
-    (function($base, $super, $parent_nesting) {
-      var self = $klass($base, $super, 'ParserError');
-
-      var $nesting = [self].concat($parent_nesting);
-
-      return nil
-    })($nesting[0], $$($nesting, 'JSONError'), $nesting);
+    $klass($nesting[0], $$('StandardError'), 'JSONError');
+    $klass($nesting[0], $$('JSONError'), 'ParserError');
     
     var $hasOwn = Opal.hasOwnProperty;
 
@@ -34,7 +18,7 @@ Opal.modules["json"] = function(Opal) {
       try {
         return JSON.parse(source);
       } catch (e) {
-        self.$raise($$$($$($nesting, 'JSON'), 'ParserError'), e.message);
+        self.$raise($$$($$('JSON'), 'ParserError'), e.message);
       }
     };
 
@@ -71,12 +55,12 @@ Opal.modules["json"] = function(Opal) {
 
             for (k in value) {
               if ($hasOwn.call(value, k)) {
-                (($writer = [k, to_opal(value[k], options)]), $send((hash), '[]=', Opal.to_a($writer)), $writer[$rb_minus($writer["length"], 1)]);
+                (($writer = [k, to_opal(value[k], options)]), $send((hash), '[]=', $to_a($writer)), $writer[$rb_minus($writer["length"], 1)]);
               }
             }
 
-            if (!options.parse && (klass = (hash)['$[]']($$($nesting, 'JSON').$create_id())) != nil) {
-              return $$$('::', 'Object').$const_get(klass).$json_create(hash);
+            if (!options.parse && (klass = (hash)['$[]']($$('JSON').$create_id())) != nil) {
+              return $Object.$const_get(klass).$json_create(hash);
             }
             else {
               return hash;
@@ -86,146 +70,126 @@ Opal.modules["json"] = function(Opal) {
     };
   ;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("create_id")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = ["json_class"];
-    $send(self, 'create_id=', Opal.to_a($writer));
+    $send(self, 'create_id=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
-    Opal.defs(self, '$[]', $JSON_$$$1 = function(value, options) {
+    $defs(self, '$[]', function $JSON_$$$1(value, options) {
       var self = this;
 
       
       
-      if (options == null) {
-        options = $hash2([], {});
-      };
-      if ($truthy($$($nesting, 'String')['$==='](value))) {
+      if (options == null) options = $hash2([], {});;
+      if ($eqeqeq($$('String'), value)) {
         return self.$parse(value, options)
       } else {
         return self.$generate(value, options)
       };
-    }, $JSON_$$$1.$$arity = -2);
-    Opal.defs(self, '$parse', $JSON_parse$2 = function $$parse(source, options) {
+    }, -2);
+    $defs(self, '$parse', function $$parse(source, options) {
       var self = this;
 
       
       
-      if (options == null) {
-        options = $hash2([], {});
-      };
+      if (options == null) options = $hash2([], {});;
       return self.$from_object($parse(source), options.$merge($hash2(["parse"], {"parse": true})));
-    }, $JSON_parse$2.$$arity = -2);
-    Opal.defs(self, '$parse!', $JSON_parse$excl$3 = function(source, options) {
+    }, -2);
+    $defs(self, '$parse!', function $JSON_parse$excl$2(source, options) {
       var self = this;
 
       
       
-      if (options == null) {
-        options = $hash2([], {});
-      };
+      if (options == null) options = $hash2([], {});;
       return self.$parse(source, options);
-    }, $JSON_parse$excl$3.$$arity = -2);
-    Opal.defs(self, '$load', $JSON_load$4 = function $$load(source, options) {
+    }, -2);
+    $defs(self, '$load', function $$load(source, options) {
       var self = this;
 
       
       
-      if (options == null) {
-        options = $hash2([], {});
-      };
+      if (options == null) options = $hash2([], {});;
       return self.$from_object($parse(source), options);
-    }, $JSON_load$4.$$arity = -2);
-    Opal.defs(self, '$from_object', $JSON_from_object$5 = function $$from_object(js_object, options) {
-      var self = this, $ret_or_1 = nil, $writer = nil, $ret_or_2 = nil;
+    }, -2);
+    $defs(self, '$from_object', function $$from_object(js_object, options) {
+      var $ret_or_1 = nil, $writer = nil;
 
       
       
-      if (options == null) {
-        options = $hash2([], {});
-      };
+      if (options == null) options = $hash2([], {});;
       if ($truthy(($ret_or_1 = options['$[]']("object_class")))) {
         $ret_or_1
       } else {
         
-        $writer = ["object_class", $$($nesting, 'Hash')];
-        $send(options, '[]=', Opal.to_a($writer));
+        $writer = ["object_class", $$('Hash')];
+        $send(options, '[]=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];
       };
-      if ($truthy(($ret_or_2 = options['$[]']("array_class")))) {
-        $ret_or_2
+      if ($truthy(($ret_or_1 = options['$[]']("array_class")))) {
+        $ret_or_1
       } else {
         
-        $writer = ["array_class", $$($nesting, 'Array')];
-        $send(options, '[]=', Opal.to_a($writer));
+        $writer = ["array_class", $$('Array')];
+        $send(options, '[]=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];
       };
       return to_opal(js_object, options.$$smap);;
-    }, $JSON_from_object$5.$$arity = -2);
-    Opal.defs(self, '$generate', $JSON_generate$6 = function $$generate(obj, options) {
-      var self = this;
-
+    }, -2);
+    $defs(self, '$generate', function $$generate(obj, options) {
       
       
-      if (options == null) {
-        options = $hash2([], {});
-      };
+      
+      if (options == null) options = $hash2([], {});;
       return obj.$to_json(options);
-    }, $JSON_generate$6.$$arity = -2);
-    return (Opal.defs(self, '$dump', $JSON_dump$7 = function $$dump(obj, io, limit) {
+    }, -2);
+    return $defs(self, '$dump', function $$dump(obj, io, limit) {
       var self = this, string = nil;
 
       
       
-      if (io == null) {
-        io = nil;
-      };
+      if (io == null) io = nil;;
       
-      if (limit == null) {
-        limit = nil;
-      };
+      if (limit == null) limit = nil;;
       string = self.$generate(obj);
       if ($truthy(io)) {
         
         if ($truthy(io['$responds_to?']("to_io"))) {
-          io = io.$to_io()};
+          io = io.$to_io()
+        };
         io.$write(string);
         return io;
       } else {
         return string
       };
-    }, $JSON_dump$7.$$arity = -2), nil) && 'dump';
+    }, -2);
   })($nesting[0], $nesting);
-  (function($base, $super, $parent_nesting) {
+  (function($base, $super) {
     var self = $klass($base, $super, 'Object');
 
-    var $nesting = [self].concat($parent_nesting), $Object_to_json$8;
-
-    return (Opal.def(self, '$to_json', $Object_to_json$8 = function $$to_json() {
+    
+    return $def(self, '$to_json', function $$to_json() {
       var self = this;
 
       return self.$to_s().$to_json()
-    }, $Object_to_json$8.$$arity = 0), nil) && 'to_json'
-  })($nesting[0], null, $nesting);
-  (function($base, $parent_nesting) {
+    }, 0)
+  })($nesting[0], null);
+  (function($base) {
     var self = $module($base, 'Enumerable');
 
-    var $nesting = [self].concat($parent_nesting), $Enumerable_to_json$9;
-
-    return (Opal.def(self, '$to_json', $Enumerable_to_json$9 = function $$to_json() {
+    
+    return $def(self, '$to_json', function $$to_json() {
       var self = this;
 
       return self.$to_a().$to_json()
-    }, $Enumerable_to_json$9.$$arity = 0), nil) && 'to_json'
-  })($nesting[0], $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 0)
+  })($nesting[0]);
+  (function($base, $super) {
     var self = $klass($base, $super, 'Array');
 
-    var $nesting = [self].concat($parent_nesting), $Array_to_json$10;
-
-    return (Opal.def(self, '$to_json', $Array_to_json$10 = function $$to_json() {
+    
+    return $def(self, '$to_json', function $$to_json() {
       var self = this;
 
       
@@ -237,25 +201,23 @@ Opal.modules["json"] = function(Opal) {
 
       return '[' + result.join(',') + ']';
     
-    }, $Array_to_json$10.$$arity = 0), nil) && 'to_json'
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 0)
+  })($nesting[0], null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'Boolean');
 
-    var $nesting = [self].concat($parent_nesting), $Boolean_to_json$11;
-
-    return (Opal.def(self, '$to_json', $Boolean_to_json$11 = function $$to_json() {
+    
+    return $def(self, '$to_json', function $$to_json() {
       var self = this;
 
       return (self == true) ? 'true' : 'false';
-    }, $Boolean_to_json$11.$$arity = 0), nil) && 'to_json'
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 0)
+  })($nesting[0], null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'Hash');
 
-    var $nesting = [self].concat($parent_nesting), $Hash_to_json$12;
-
-    return (Opal.def(self, '$to_json', $Hash_to_json$12 = function $$to_json() {
+    
+    return $def(self, '$to_json', function $$to_json() {
       var self = this;
 
       
@@ -276,68 +238,62 @@ Opal.modules["json"] = function(Opal) {
 
       return '{' + result.join(',') + '}';
     
-    }, $Hash_to_json$12.$$arity = 0), nil) && 'to_json'
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 0)
+  })($nesting[0], null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'NilClass');
 
-    var $nesting = [self].concat($parent_nesting), $NilClass_to_json$13;
-
-    return (Opal.def(self, '$to_json', $NilClass_to_json$13 = function $$to_json() {
-      var self = this;
-
+    
+    return $def(self, '$to_json', function $$to_json() {
+      
       return "null"
-    }, $NilClass_to_json$13.$$arity = 0), nil) && 'to_json'
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 0)
+  })($nesting[0], null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'Numeric');
 
-    var $nesting = [self].concat($parent_nesting), $Numeric_to_json$14;
-
-    return (Opal.def(self, '$to_json', $Numeric_to_json$14 = function $$to_json() {
+    
+    return $def(self, '$to_json', function $$to_json() {
       var self = this;
 
       return self.toString();
-    }, $Numeric_to_json$14.$$arity = 0), nil) && 'to_json'
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 0)
+  })($nesting[0], null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'String');
 
-    var $nesting = [self].concat($parent_nesting), $String_to_json$15;
-
-    return (Opal.def(self, '$to_json', $String_to_json$15 = function $$to_json() {
+    
+    return $def(self, '$to_json', function $$to_json() {
       var self = this;
 
       return JSON.stringify(self);
-    }, $String_to_json$15.$$arity = 0), nil) && 'to_json'
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 0)
+  })($nesting[0], null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'Time');
 
-    var $nesting = [self].concat($parent_nesting), $Time_to_json$16;
-
-    return (Opal.def(self, '$to_json', $Time_to_json$16 = function $$to_json() {
+    
+    return $def(self, '$to_json', function $$to_json() {
       var self = this;
 
       return self.$strftime("%FT%T%z").$to_json()
-    }, $Time_to_json$16.$$arity = 0), nil) && 'to_json'
-  })($nesting[0], null, $nesting);
-  return (function($base, $super, $parent_nesting) {
+    }, 0)
+  })($nesting[0], null);
+  return (function($base, $super) {
     var self = $klass($base, $super, 'Date');
 
-    var $nesting = [self].concat($parent_nesting), $Date_to_json$17, $Date_as_json$18;
-
     
     
-    Opal.def(self, '$to_json', $Date_to_json$17 = function $$to_json() {
+    
+    $def(self, '$to_json', function $$to_json() {
       var self = this;
 
       return self.$to_s().$to_json()
-    }, $Date_to_json$17.$$arity = 0);
-    return (Opal.def(self, '$as_json', $Date_as_json$18 = function $$as_json() {
+    }, 0);
+    return $def(self, '$as_json', function $$as_json() {
       var self = this;
 
       return self.$to_s()
-    }, $Date_as_json$18.$$arity = 0), nil) && 'as_json';
-  })($nesting[0], null, $nesting);
+    }, 0);
+  })($nesting[0], null);
 };
diff --git a/opal/master/json.min.js b/opal/master/json.min.js
index bab7979a..feac9dd9 100644
--- a/opal/master/json.min.js
+++ b/opal/master/json.min.js
@@ -1 +1 @@
-Opal.modules.json=function(Opal){function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}Opal.top;var $Object_to_json$8,$parent_nesting,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$send=Opal.send,$hash2=Opal.hash2,$truthy=Opal.truthy;return Opal.add_stubs(["$raise","$new","$push","$[]=","$-","$[]","$create_id","$json_create","$const_get","$attr_accessor","$create_id=","$===","$parse","$generate","$from_object","$merge","$to_json","$responds_to?","$to_io","$write","$to_s","$to_a","$strftime"]),function($base,$JSON_dump$7){var self=$module($base,"JSON"),$nesting=[self].concat($JSON_dump$7),$writer=nil;!function($base,$super,$parent_nesting){[$klass($base,$super,"JSONError")].concat($parent_nesting)}($nesting[0],$$($nesting,"StandardError"),$nesting),function($base,$super,$parent_nesting){[$klass($base,$super,"ParserError")].concat($parent_nesting)}($nesting[0],$$($nesting,"JSONError"),$nesting);var $hasOwn=Opal.hasOwnProperty;function $parse(source){try{return JSON.parse(source)}catch(e){self.$raise($$$($$($nesting,"JSON"),"ParserError"),e.message)}}function to_opal(value,options){var klass,arr,hash,i,ii,k;switch(typeof value){case"string":case"number":return value;case"boolean":return!!value;case"undefined":return nil;case"object":if(!value)return nil;if(value.$$is_array){for(arr=options.array_class.$new(),i=0,ii=value.length;i<ii;i++)arr.$push(to_opal(value[i],options));return arr}for(k in hash=options.object_class.$new(),value)$hasOwn.call(value,k)&&($writer=[k,to_opal(value[k],options)],$send(hash,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]);return options.parse||(klass=hash["$[]"]($$($nesting,"JSON").$create_id()))==nil?hash:$$$("::","Object").$const_get(klass).$json_create(hash)}}(function(self,$parent_nesting){[self].concat($parent_nesting),self.$attr_accessor("create_id")})(Opal.get_singleton_class(self),$nesting),$writer=["json_class"],$send(self,"create_id=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)],Opal.defs(self,"$[]",$JSON_dump$7=function(value,options){return null==options&&(options=$hash2([],{})),$truthy($$($nesting,"String")["$==="](value))?this.$parse(value,options):this.$generate(value,options)},$JSON_dump$7.$$arity=-2),Opal.defs(self,"$parse",$JSON_dump$7=function(source,options){return null==options&&(options=$hash2([],{})),this.$from_object($parse(source),options.$merge($hash2(["parse"],{parse:!0})))},$JSON_dump$7.$$arity=-2),Opal.defs(self,"$parse!",$JSON_dump$7=function(source,options){return null==options&&(options=$hash2([],{})),this.$parse(source,options)},$JSON_dump$7.$$arity=-2),Opal.defs(self,"$load",$JSON_dump$7=function(source,options){return null==options&&(options=$hash2([],{})),this.$from_object($parse(source),options)},$JSON_dump$7.$$arity=-2),Opal.defs(self,"$from_object",$JSON_dump$7=function(js_object,options){var $writer=nil;return null==options&&(options=$hash2([],{})),$truthy(options["$[]"]("object_class"))||($writer=["object_class",$$($nesting,"Hash")],$send(options,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]),$truthy(options["$[]"]("array_class"))||($writer=["array_class",$$($nesting,"Array")],$send(options,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]),to_opal(js_object,options.$$smap)},$JSON_dump$7.$$arity=-2),Opal.defs(self,"$generate",$JSON_dump$7=function(obj,options){return null==options&&(options=$hash2([],{})),obj.$to_json(options)},$JSON_dump$7.$$arity=-2),Opal.defs(self,"$dump",$JSON_dump$7=function(obj,io,limit){var string;return null==io&&(io=nil),null==limit&&(limit=nil),string=this.$generate(obj),$truthy(io)?($truthy(io["$responds_to?"]("to_io"))&&(io=io.$to_io()),io.$write(string),io):string},$JSON_dump$7.$$arity=-2)}($nesting[0],$nesting),[$Object_to_json$8=$klass($Object_to_json$8=($parent_nesting=$nesting)[0],null,"Object")].concat($parent_nesting),Opal.def($Object_to_json$8,"$to_json",$Object_to_json$8=function(){return this.$to_s().$to_json()},$Object_to_json$8.$$arity=0),function($Enumerable_to_json$9,$parent_nesting){[$Enumerable_to_json$9=$module($Enumerable_to_json$9,"Enumerable")].concat($parent_nesting),Opal.def($Enumerable_to_json$9,"$to_json",$Enumerable_to_json$9=function(){return this.$to_a().$to_json()},$Enumerable_to_json$9.$$arity=0)}($nesting[0],$nesting),function($Array_to_json$10,$parent_nesting){[$Array_to_json$10=$klass($Array_to_json$10,null,"Array")].concat($parent_nesting),Opal.def($Array_to_json$10,"$to_json",$Array_to_json$10=function(){for(var result=[],i=0,length=this.length;i<length;i++)result.push(this[i].$to_json());return"["+result.join(",")+"]"},$Array_to_json$10.$$arity=0)}($nesting[0],$nesting),function($Boolean_to_json$11,$parent_nesting){[$Boolean_to_json$11=$klass($Boolean_to_json$11,null,"Boolean")].concat($parent_nesting),Opal.def($Boolean_to_json$11,"$to_json",$Boolean_to_json$11=function(){return 1==this?"true":"false"},$Boolean_to_json$11.$$arity=0)}($nesting[0],$nesting),function($Hash_to_json$12,$parent_nesting){[$Hash_to_json$12=$klass($Hash_to_json$12,null,"Hash")].concat($parent_nesting),Opal.def($Hash_to_json$12,"$to_json",$Hash_to_json$12=function(){for(var key,value,result=[],i=0,keys=this.$$keys,length=keys.length;i<length;i++)(key=keys[i]).$$is_string?value=this.$$smap[key]:(value=key.value,key=key.key),result.push(key.$to_s().$to_json()+":"+value.$to_json());return"{"+result.join(",")+"}"},$Hash_to_json$12.$$arity=0)}($nesting[0],$nesting),function($NilClass_to_json$13,$parent_nesting){[$NilClass_to_json$13=$klass($NilClass_to_json$13,null,"NilClass")].concat($parent_nesting),Opal.def($NilClass_to_json$13,"$to_json",$NilClass_to_json$13=function(){return"null"},$NilClass_to_json$13.$$arity=0)}($nesting[0],$nesting),function($Numeric_to_json$14,$parent_nesting){[$Numeric_to_json$14=$klass($Numeric_to_json$14,null,"Numeric")].concat($parent_nesting),Opal.def($Numeric_to_json$14,"$to_json",$Numeric_to_json$14=function(){return this.toString()},$Numeric_to_json$14.$$arity=0)}($nesting[0],$nesting),function($String_to_json$15,$parent_nesting){[$String_to_json$15=$klass($String_to_json$15,null,"String")].concat($parent_nesting),Opal.def($String_to_json$15,"$to_json",$String_to_json$15=function(){return JSON.stringify(this)},$String_to_json$15.$$arity=0)}($nesting[0],$nesting),function($Time_to_json$16,$parent_nesting){[$Time_to_json$16=$klass($Time_to_json$16,null,"Time")].concat($parent_nesting),Opal.def($Time_to_json$16,"$to_json",$Time_to_json$16=function(){return this.$strftime("%FT%T%z").$to_json()},$Time_to_json$16.$$arity=0)}($nesting[0],$nesting),function($Date_as_json$18,$Date_to_json$17){$Date_as_json$18=$klass($Date_as_json$18,null,"Date"),[$Date_as_json$18].concat($Date_to_json$17);return Opal.def($Date_as_json$18,"$to_json",$Date_to_json$17=function(){return this.$to_s().$to_json()},$Date_to_json$17.$$arity=0),Opal.def($Date_as_json$18,"$as_json",$Date_as_json$18=function(){return this.$to_s()},$Date_as_json$18.$$arity=0),nil&&"as_json"}($nesting[0],$nesting)};
+Opal.modules.json=function(Opal){var self,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$module=Opal.module,$klass=Opal.klass,$send=Opal.send,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$Object=Opal.Object,$hash2=Opal.hash2,$eqeqeq=Opal.eqeqeq,$defs=Opal.defs,$truthy=Opal.truthy,$def=Opal.def;return Opal.add_stubs("raise,new,push,[]=,-,[],create_id,json_create,const_get,attr_accessor,create_id=,===,parse,generate,from_object,merge,to_json,responds_to?,to_io,write,to_s,to_a,strftime"),function($base,$parent_nesting){var self=$module($base,"JSON"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$writer=nil;$klass($nesting[0],$$("StandardError"),"JSONError"),$klass($nesting[0],$$("JSONError"),"ParserError");var $hasOwn=Opal.hasOwnProperty;function $parse(source){try{return JSON.parse(source)}catch(e){self.$raise($$$($$("JSON"),"ParserError"),e.message)}}function to_opal(value,options){var klass,arr,hash,i,ii,k;switch(typeof value){case"string":case"number":return value;case"boolean":return!!value;case"undefined":return nil;case"object":if(!value)return nil;if(value.$$is_array){for(arr=options.array_class.$new(),i=0,ii=value.length;i<ii;i++)arr.$push(to_opal(value[i],options));return arr}for(k in hash=options.object_class.$new(),value)$hasOwn.call(value,k)&&($writer=[k,to_opal(value[k],options)],$send(hash,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]);return options.parse||(klass=hash["$[]"]($$("JSON").$create_id()))==nil?hash:$Object.$const_get(klass).$json_create(hash)}}(function(self,$parent_nesting){self.$attr_accessor("create_id")})(Opal.get_singleton_class(self)),$send(self,"create_id=",$to_a($writer=["json_class"])),$writer[$rb_minus($writer.length,1)],$defs(self,"$[]",(function(value,options){return null==options&&(options=$hash2([],{})),$eqeqeq($$("String"),value)?this.$parse(value,options):this.$generate(value,options)}),-2),$defs(self,"$parse",(function(source,options){return null==options&&(options=$hash2([],{})),this.$from_object($parse(source),options.$merge($hash2(["parse"],{parse:!0})))}),-2),$defs(self,"$parse!",(function(source,options){return null==options&&(options=$hash2([],{})),this.$parse(source,options)}),-2),$defs(self,"$load",(function(source,options){return null==options&&(options=$hash2([],{})),this.$from_object($parse(source),options)}),-2),$defs(self,"$from_object",(function(js_object,options){var $writer=nil;return null==options&&(options=$hash2([],{})),$truthy(options["$[]"]("object_class"))||($writer=["object_class",$$("Hash")],$send(options,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]),$truthy(options["$[]"]("array_class"))||($writer=["array_class",$$("Array")],$send(options,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]),to_opal(js_object,options.$$smap)}),-2),$defs(self,"$generate",(function(obj,options){return null==options&&(options=$hash2([],{})),obj.$to_json(options)}),-2),$defs(self,"$dump",(function(obj,io,limit){var string;return null==io&&(io=nil),null==limit&&(limit=nil),string=this.$generate(obj),$truthy(io)?($truthy(io["$responds_to?"]("to_io"))&&(io=io.$to_io()),io.$write(string),io):string}),-2)}($nesting[0],$nesting),self=$klass($nesting[0],null,"Object"),$def(self,"$to_json",(function(){return this.$to_s().$to_json()}),0),function($base){var self=$module($base,"Enumerable");$def(self,"$to_json",(function(){return this.$to_a().$to_json()}),0)}($nesting[0]),function($base,$super){var self=$klass($base,null,"Array");$def(self,"$to_json",(function(){for(var result=[],i=0,length=this.length;i<length;i++)result.push(this[i].$to_json());return"["+result.join(",")+"]"}),0)}($nesting[0]),function($base,$super){var self=$klass($base,null,"Boolean");$def(self,"$to_json",(function(){return 1==this?"true":"false"}),0)}($nesting[0]),function($base,$super){var self=$klass($base,null,"Hash");$def(self,"$to_json",(function(){for(var key,value,result=[],i=0,keys=this.$$keys,length=keys.length;i<length;i++)(key=keys[i]).$$is_string?value=this.$$smap[key]:(value=key.value,key=key.key),result.push(key.$to_s().$to_json()+":"+value.$to_json());return"{"+result.join(",")+"}"}),0)}($nesting[0]),function($base,$super){var self=$klass($base,null,"NilClass");$def(self,"$to_json",(function(){return"null"}),0)}($nesting[0]),function($base,$super){var self=$klass($base,null,"Numeric");$def(self,"$to_json",(function(){return this.toString()}),0)}($nesting[0]),function($base,$super){var self=$klass($base,null,"String");$def(self,"$to_json",(function(){return JSON.stringify(this)}),0)}($nesting[0]),function($base,$super){var self=$klass($base,null,"Time");$def(self,"$to_json",(function(){return this.$strftime("%FT%T%z").$to_json()}),0)}($nesting[0]),function($base,$super){var self=$klass($base,null,"Date");return $def(self,"$to_json",(function(){return this.$to_s().$to_json()}),0),$def(self,"$as_json",(function(){return this.$to_s()}),0)}($nesting[0])};
diff --git a/opal/master/json.min.js.gz b/opal/master/json.min.js.gz
index 910be271..a19e9e9d 100644
Binary files a/opal/master/json.min.js.gz and b/opal/master/json.min.js.gz differ
diff --git a/opal/master/logger.js b/opal/master/logger.js
index 137b46d2..780559fa 100644
--- a/opal/master/logger.js
+++ b/opal/master/logger.js
@@ -1,20 +1,13 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["logger"] = function(Opal) {
-  function $rb_le(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs <= rhs : lhs['$<='](rhs);
-  }
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $module = Opal.module, $send = Opal.send, $truthy = Opal.truthy;
-
-  Opal.add_stubs(['$include', '$to_h', '$map', '$constants', '$const_get', '$to_s', '$format', '$chr', '$strftime', '$message_as_string', '$===', '$full_message', '$inspect', '$attr_reader', '$attr_accessor', '$new', '$key', '$upcase', '$raise', '$add', '$to_proc', '$<=', '$<', '$write', '$call', '$[]', '$now']);
+Opal.modules["logger"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $module = Opal.module, $const_set = Opal.const_set, $send = Opal.send, $def = Opal.def, $eqeqeq = Opal.eqeqeq, $truthy = Opal.truthy, $rb_le = Opal.rb_le, $rb_lt = Opal.rb_lt;
+
+  Opal.add_stubs('include,to_h,map,constants,const_get,to_s,format,chr,strftime,message_as_string,===,full_message,inspect,attr_reader,attr_accessor,new,key,upcase,raise,add,to_proc,<=,<,write,call,[],now');
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Logger');
 
-    var $nesting = [self].concat($parent_nesting), $Logger$1, $Logger_initialize$4, $Logger_level$eq$5, $Logger_info$6, $Logger_debug$7, $Logger_warn$8, $Logger_error$9, $Logger_fatal$10, $Logger_unknown$11, $Logger_info$ques$12, $Logger_debug$ques$13, $Logger_warn$ques$14, $Logger_error$ques$15, $Logger_fatal$ques$16, $Logger_add$17;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-    self.$$prototype.level = self.$$prototype.progname = self.$$prototype.pipe = self.$$prototype.formatter = nil;
+    $proto.level = $proto.progname = $proto.pipe = $proto.formatter = nil;
     
     (function($base, $parent_nesting) {
       var self = $module($base, 'Severity');
@@ -22,223 +15,190 @@ Opal.modules["logger"] = function(Opal) {
       var $nesting = [self].concat($parent_nesting);
 
       
-      Opal.const_set($nesting[0], 'DEBUG', 0);
-      Opal.const_set($nesting[0], 'INFO', 1);
-      Opal.const_set($nesting[0], 'WARN', 2);
-      Opal.const_set($nesting[0], 'ERROR', 3);
-      Opal.const_set($nesting[0], 'FATAL', 4);
-      return Opal.const_set($nesting[0], 'UNKNOWN', 5);
+      $const_set($nesting[0], 'DEBUG', 0);
+      $const_set($nesting[0], 'INFO', 1);
+      $const_set($nesting[0], 'WARN', 2);
+      $const_set($nesting[0], 'ERROR', 3);
+      $const_set($nesting[0], 'FATAL', 4);
+      return $const_set($nesting[0], 'UNKNOWN', 5);
     })($nesting[0], $nesting);
-    self.$include($$($nesting, 'Severity'));
-    Opal.const_set($nesting[0], 'SEVERITY_LABELS', $send($$($nesting, 'Severity').$constants(), 'map', [], ($Logger$1 = function(s){var self = $Logger$1.$$s == null ? this : $Logger$1.$$s;
-
+    self.$include($$('Severity'));
+    $const_set($nesting[0], 'SEVERITY_LABELS', $send($$('Severity').$constants(), 'map', [], function $Logger$1(s){
       
       
-      if (s == null) {
-        s = nil;
-      };
-      return [$$($nesting, 'Severity').$const_get(s), s.$to_s()];}, $Logger$1.$$s = self, $Logger$1.$$arity = 1, $Logger$1)).$to_h());
+      if (s == null) s = nil;;
+      return [$$('Severity').$const_get(s), s.$to_s()];}, 1).$to_h());
     (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Formatter');
 
-      var $nesting = [self].concat($parent_nesting), $Formatter_call$2, $Formatter_message_as_string$3;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
-      Opal.const_set($nesting[0], 'MESSAGE_FORMAT', "%s, [%s] %5s -- %s: %s\n");
-      Opal.const_set($nesting[0], 'DATE_TIME_FORMAT', "%Y-%m-%dT%H:%M:%S.%6N");
+      $const_set($nesting[0], 'MESSAGE_FORMAT', "%s, [%s] %5s -- %s: %s\n");
+      $const_set($nesting[0], 'DATE_TIME_FORMAT', "%Y-%m-%dT%H:%M:%S.%6N");
       
-      Opal.def(self, '$call', $Formatter_call$2 = function $$call(severity, time, progname, msg) {
+      $def(self, '$call', function $$call(severity, time, progname, msg) {
         var self = this;
 
-        return self.$format($$($nesting, 'MESSAGE_FORMAT'), severity.$chr(), time.$strftime($$($nesting, 'DATE_TIME_FORMAT')), severity, progname, self.$message_as_string(msg))
-      }, $Formatter_call$2.$$arity = 4);
-      return (Opal.def(self, '$message_as_string', $Formatter_message_as_string$3 = function $$message_as_string(msg) {
-        var self = this, $case = nil;
-
-        return (function() {$case = msg;
-        if ($$$('::', 'String')['$===']($case)) {return msg}
-        else if ($$$('::', 'Exception')['$===']($case)) {return msg.$full_message()}
-        else {return msg.$inspect()}})()
-      }, $Formatter_message_as_string$3.$$arity = 1), nil) && 'message_as_string';
+        return self.$format($$('MESSAGE_FORMAT'), severity.$chr(), time.$strftime($$('DATE_TIME_FORMAT')), severity, progname, self.$message_as_string(msg))
+      }, 4);
+      return $def(self, '$message_as_string', function $$message_as_string(msg) {
+        var $ret_or_1 = nil;
+
+        if ($eqeqeq($$$('String'), ($ret_or_1 = msg))) {
+          return msg
+        } else if ($eqeqeq($$$('Exception'), $ret_or_1)) {
+          return msg.$full_message()
+        } else {
+          return msg.$inspect()
+        }
+      }, 1);
     })($nesting[0], null, $nesting);
     self.$attr_reader("level");
     self.$attr_accessor("progname");
     self.$attr_accessor("formatter");
     
-    Opal.def(self, '$initialize', $Logger_initialize$4 = function $$initialize(pipe) {
+    $def(self, '$initialize', function $$initialize(pipe) {
       var self = this;
 
       
       self.pipe = pipe;
-      self.level = $$($nesting, 'DEBUG');
-      return (self.formatter = $$($nesting, 'Formatter').$new());
-    }, $Logger_initialize$4.$$arity = 1);
+      self.level = $$('DEBUG');
+      return (self.formatter = $$('Formatter').$new());
+    }, 1);
     
-    Opal.def(self, '$level=', $Logger_level$eq$5 = function(severity) {
+    $def(self, '$level=', function $Logger_level$eq$2(severity) {
       var self = this, level = nil;
 
-      if ($truthy($$$('::', 'Integer')['$==='](severity))) {
+      if ($eqeqeq($$$('Integer'), severity)) {
         return (self.level = severity)
-      } else if ($truthy((level = $$($nesting, 'SEVERITY_LABELS').$key(severity.$to_s().$upcase())))) {
+      } else if ($truthy((level = $$('SEVERITY_LABELS').$key(severity.$to_s().$upcase())))) {
         return (self.level = level)
       } else {
-        return self.$raise($$($nesting, 'ArgumentError'), "" + "invalid log level: " + (severity))
+        return self.$raise($$('ArgumentError'), "invalid log level: " + (severity))
       }
-    }, $Logger_level$eq$5.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$info', $Logger_info$6 = function $$info(progname) {
-      var $iter = $Logger_info$6.$$p, block = $iter || nil, self = this;
+    $def(self, '$info', function $$info(progname) {
+      var block = $$info.$$p || nil, self = this;
 
-      if ($iter) $Logger_info$6.$$p = null;
-      
+      delete $$info.$$p;
       
-      if ($iter) $Logger_info$6.$$p = null;;
+      ;
       
-      if (progname == null) {
-        progname = nil;
-      };
-      return $send(self, 'add', [$$($nesting, 'INFO'), nil, progname], block.$to_proc());
-    }, $Logger_info$6.$$arity = -1);
+      if (progname == null) progname = nil;;
+      return $send(self, 'add', [$$('INFO'), nil, progname], block.$to_proc());
+    }, -1);
     
-    Opal.def(self, '$debug', $Logger_debug$7 = function $$debug(progname) {
-      var $iter = $Logger_debug$7.$$p, block = $iter || nil, self = this;
+    $def(self, '$debug', function $$debug(progname) {
+      var block = $$debug.$$p || nil, self = this;
 
-      if ($iter) $Logger_debug$7.$$p = null;
+      delete $$debug.$$p;
       
+      ;
       
-      if ($iter) $Logger_debug$7.$$p = null;;
-      
-      if (progname == null) {
-        progname = nil;
-      };
-      return $send(self, 'add', [$$($nesting, 'DEBUG'), nil, progname], block.$to_proc());
-    }, $Logger_debug$7.$$arity = -1);
+      if (progname == null) progname = nil;;
+      return $send(self, 'add', [$$('DEBUG'), nil, progname], block.$to_proc());
+    }, -1);
     
-    Opal.def(self, '$warn', $Logger_warn$8 = function $$warn(progname) {
-      var $iter = $Logger_warn$8.$$p, block = $iter || nil, self = this;
+    $def(self, '$warn', function $$warn(progname) {
+      var block = $$warn.$$p || nil, self = this;
 
-      if ($iter) $Logger_warn$8.$$p = null;
-      
+      delete $$warn.$$p;
       
-      if ($iter) $Logger_warn$8.$$p = null;;
+      ;
       
-      if (progname == null) {
-        progname = nil;
-      };
-      return $send(self, 'add', [$$($nesting, 'WARN'), nil, progname], block.$to_proc());
-    }, $Logger_warn$8.$$arity = -1);
+      if (progname == null) progname = nil;;
+      return $send(self, 'add', [$$('WARN'), nil, progname], block.$to_proc());
+    }, -1);
     
-    Opal.def(self, '$error', $Logger_error$9 = function $$error(progname) {
-      var $iter = $Logger_error$9.$$p, block = $iter || nil, self = this;
+    $def(self, '$error', function $$error(progname) {
+      var block = $$error.$$p || nil, self = this;
 
-      if ($iter) $Logger_error$9.$$p = null;
-      
+      delete $$error.$$p;
       
-      if ($iter) $Logger_error$9.$$p = null;;
+      ;
       
-      if (progname == null) {
-        progname = nil;
-      };
-      return $send(self, 'add', [$$($nesting, 'ERROR'), nil, progname], block.$to_proc());
-    }, $Logger_error$9.$$arity = -1);
+      if (progname == null) progname = nil;;
+      return $send(self, 'add', [$$('ERROR'), nil, progname], block.$to_proc());
+    }, -1);
     
-    Opal.def(self, '$fatal', $Logger_fatal$10 = function $$fatal(progname) {
-      var $iter = $Logger_fatal$10.$$p, block = $iter || nil, self = this;
+    $def(self, '$fatal', function $$fatal(progname) {
+      var block = $$fatal.$$p || nil, self = this;
 
-      if ($iter) $Logger_fatal$10.$$p = null;
-      
+      delete $$fatal.$$p;
       
-      if ($iter) $Logger_fatal$10.$$p = null;;
+      ;
       
-      if (progname == null) {
-        progname = nil;
-      };
-      return $send(self, 'add', [$$($nesting, 'FATAL'), nil, progname], block.$to_proc());
-    }, $Logger_fatal$10.$$arity = -1);
+      if (progname == null) progname = nil;;
+      return $send(self, 'add', [$$('FATAL'), nil, progname], block.$to_proc());
+    }, -1);
     
-    Opal.def(self, '$unknown', $Logger_unknown$11 = function $$unknown(progname) {
-      var $iter = $Logger_unknown$11.$$p, block = $iter || nil, self = this;
+    $def(self, '$unknown', function $$unknown(progname) {
+      var block = $$unknown.$$p || nil, self = this;
 
-      if ($iter) $Logger_unknown$11.$$p = null;
+      delete $$unknown.$$p;
       
+      ;
       
-      if ($iter) $Logger_unknown$11.$$p = null;;
-      
-      if (progname == null) {
-        progname = nil;
-      };
-      return $send(self, 'add', [$$($nesting, 'UNKNOWN'), nil, progname], block.$to_proc());
-    }, $Logger_unknown$11.$$arity = -1);
+      if (progname == null) progname = nil;;
+      return $send(self, 'add', [$$('UNKNOWN'), nil, progname], block.$to_proc());
+    }, -1);
     
-    Opal.def(self, '$info?', $Logger_info$ques$12 = function() {
+    $def(self, '$info?', function $Logger_info$ques$3() {
       var self = this;
 
-      return $rb_le(self.level, $$($nesting, 'INFO'))
-    }, $Logger_info$ques$12.$$arity = 0);
+      return $rb_le(self.level, $$('INFO'))
+    }, 0);
     
-    Opal.def(self, '$debug?', $Logger_debug$ques$13 = function() {
+    $def(self, '$debug?', function $Logger_debug$ques$4() {
       var self = this;
 
-      return $rb_le(self.level, $$($nesting, 'DEBUG'))
-    }, $Logger_debug$ques$13.$$arity = 0);
+      return $rb_le(self.level, $$('DEBUG'))
+    }, 0);
     
-    Opal.def(self, '$warn?', $Logger_warn$ques$14 = function() {
+    $def(self, '$warn?', function $Logger_warn$ques$5() {
       var self = this;
 
-      return $rb_le(self.level, $$($nesting, 'WARN'))
-    }, $Logger_warn$ques$14.$$arity = 0);
+      return $rb_le(self.level, $$('WARN'))
+    }, 0);
     
-    Opal.def(self, '$error?', $Logger_error$ques$15 = function() {
+    $def(self, '$error?', function $Logger_error$ques$6() {
       var self = this;
 
-      return $rb_le(self.level, $$($nesting, 'ERROR'))
-    }, $Logger_error$ques$15.$$arity = 0);
+      return $rb_le(self.level, $$('ERROR'))
+    }, 0);
     
-    Opal.def(self, '$fatal?', $Logger_fatal$ques$16 = function() {
+    $def(self, '$fatal?', function $Logger_fatal$ques$7() {
       var self = this;
 
-      return $rb_le(self.level, $$($nesting, 'FATAL'))
-    }, $Logger_fatal$ques$16.$$arity = 0);
-    return (Opal.def(self, '$add', $Logger_add$17 = function $$add(severity, message, progname) {
-      var $iter = $Logger_add$17.$$p, block = $iter || nil, self = this, $ret_or_1 = nil, $ret_or_2 = nil, $ret_or_3 = nil;
+      return $rb_le(self.level, $$('FATAL'))
+    }, 0);
+    return $def(self, '$add', function $$add(severity, message, progname) {
+      var block = $$add.$$p || nil, self = this, $ret_or_1 = nil;
 
-      if ($iter) $Logger_add$17.$$p = null;
+      delete $$add.$$p;
       
+      ;
       
-      if ($iter) $Logger_add$17.$$p = null;;
+      if (message == null) message = nil;;
       
-      if (message == null) {
-        message = nil;
+      if (progname == null) progname = nil;;
+      if ($truthy($rb_lt((severity = ($truthy(($ret_or_1 = severity)) ? ($ret_or_1) : ($$('UNKNOWN')))), self.level))) {
+        return true
       };
-      
-      if (progname == null) {
-        progname = nil;
+      progname = ($truthy(($ret_or_1 = progname)) ? ($ret_or_1) : (self.progname));
+      if (!$truthy(message)) {
+        if ((block !== nil)) {
+          message = Opal.yieldX(block, [])
+        } else {
+          
+          message = progname;
+          progname = self.progname;
+        }
       };
-      if ($truthy($rb_lt((severity = (function() {if ($truthy(($ret_or_1 = severity))) {
-        return $ret_or_1
-      } else {
-        return $$($nesting, 'UNKNOWN')
-      }; return nil; })()), self.level))) {
-        return true};
-      progname = (function() {if ($truthy(($ret_or_2 = progname))) {
-        return $ret_or_2
-      } else {
-        return self.progname
-      }; return nil; })();
-      if ($truthy(message)) {
-      } else if ((block !== nil)) {
-        message = Opal.yieldX(block, [])
-      } else {
-        
-        message = progname;
-        progname = self.progname;
-      };
-      self.pipe.$write(self.formatter.$call((function() {if ($truthy(($ret_or_3 = $$($nesting, 'SEVERITY_LABELS')['$[]'](severity)))) {
-        return $ret_or_3
-      } else {
-        return "ANY"
-      }; return nil; })(), $$$('::', 'Time').$now(), progname, message));
+      self.pipe.$write(self.formatter.$call(($truthy(($ret_or_1 = $$('SEVERITY_LABELS')['$[]'](severity))) ? ($ret_or_1) : ("ANY")), $$$('Time').$now(), progname, message));
       return true;
-    }, $Logger_add$17.$$arity = -2), nil) && 'add';
+    }, -2);
   })($nesting[0], null, $nesting)
 };
diff --git a/opal/master/logger.min.js b/opal/master/logger.min.js
index 1943b629..c3de1203 100644
--- a/opal/master/logger.min.js
+++ b/opal/master/logger.min.js
@@ -1 +1 @@
-Opal.modules.logger=function(Opal){function $rb_le(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs<=rhs:lhs["$<="](rhs)}Opal.top;var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$klass=Opal.klass,$module=Opal.module,$send=Opal.send,$truthy=Opal.truthy;return Opal.add_stubs(["$include","$to_h","$map","$constants","$const_get","$to_s","$format","$chr","$strftime","$message_as_string","$===","$full_message","$inspect","$attr_reader","$attr_accessor","$new","$key","$upcase","$raise","$add","$to_proc","$<=","$<","$write","$call","$[]","$now"]),function(self,$Logger_fatal$ques$16){var $Logger$1,$Logger_info$6,$Logger_debug$7,$Logger_warn$8,$Logger_error$9,$Logger_fatal$10,$Logger_unknown$11,$Logger_add$17,self=$klass(self,null,"Logger"),$nesting=[self].concat($Logger_fatal$ques$16);return self.$$prototype.level=self.$$prototype.progname=self.$$prototype.pipe=self.$$prototype.formatter=nil,function($base,$nesting){$nesting=[$module($base,"Severity")].concat($nesting),Opal.const_set($nesting[0],"DEBUG",0),Opal.const_set($nesting[0],"INFO",1),Opal.const_set($nesting[0],"WARN",2),Opal.const_set($nesting[0],"ERROR",3),Opal.const_set($nesting[0],"FATAL",4),Opal.const_set($nesting[0],"UNKNOWN",5)}($nesting[0],$nesting),self.$include($$($nesting,"Severity")),Opal.const_set($nesting[0],"SEVERITY_LABELS",$send($$($nesting,"Severity").$constants(),"map",[],(($Logger$1=function(s){null==$Logger$1.$$s||$Logger$1.$$s;return null==s&&(s=nil),[$$($nesting,"Severity").$const_get(s),s.$to_s()]}).$$s=self,$Logger$1.$$arity=1,$Logger$1)).$to_h()),function($Formatter_message_as_string$3,$Formatter_call$2){var $nesting=[$Formatter_message_as_string$3=$klass($Formatter_message_as_string$3,null,"Formatter")].concat($Formatter_call$2);Opal.const_set($nesting[0],"MESSAGE_FORMAT","%s, [%s] %5s -- %s: %s\n"),Opal.const_set($nesting[0],"DATE_TIME_FORMAT","%Y-%m-%dT%H:%M:%S.%6N"),Opal.def($Formatter_message_as_string$3,"$call",$Formatter_call$2=function(severity,time,progname,msg){return this.$format($$($nesting,"MESSAGE_FORMAT"),severity.$chr(),time.$strftime($$($nesting,"DATE_TIME_FORMAT")),severity,progname,this.$message_as_string(msg))},$Formatter_call$2.$$arity=4),Opal.def($Formatter_message_as_string$3,"$message_as_string",$Formatter_message_as_string$3=function(msg){var $case=nil;return $case=msg,$$$("::","String")["$==="]($case)?msg:$$$("::","Exception")["$==="]($case)?msg.$full_message():msg.$inspect()},$Formatter_message_as_string$3.$$arity=1)}($nesting[0],$nesting),self.$attr_reader("level"),self.$attr_accessor("progname"),self.$attr_accessor("formatter"),Opal.def(self,"$initialize",$Logger_fatal$ques$16=function(pipe){return this.pipe=pipe,this.level=$$($nesting,"DEBUG"),this.formatter=$$($nesting,"Formatter").$new()},$Logger_fatal$ques$16.$$arity=1),Opal.def(self,"$level=",$Logger_fatal$ques$16=function(severity){var level;return $truthy($$$("::","Integer")["$==="](severity))?this.level=severity:$truthy(level=$$($nesting,"SEVERITY_LABELS").$key(severity.$to_s().$upcase()))?this.level=level:this.$raise($$($nesting,"ArgumentError"),"invalid log level: "+severity)},$Logger_fatal$ques$16.$$arity=1),Opal.def(self,"$info",$Logger_info$6=function(progname){var $iter=$Logger_info$6.$$p,block=$iter||nil;return $iter&&($Logger_info$6.$$p=null),$iter&&($Logger_info$6.$$p=null),null==progname&&(progname=nil),$send(this,"add",[$$($nesting,"INFO"),nil,progname],block.$to_proc())},$Logger_info$6.$$arity=-1),Opal.def(self,"$debug",$Logger_debug$7=function(progname){var $iter=$Logger_debug$7.$$p,block=$iter||nil;return $iter&&($Logger_debug$7.$$p=null),$iter&&($Logger_debug$7.$$p=null),null==progname&&(progname=nil),$send(this,"add",[$$($nesting,"DEBUG"),nil,progname],block.$to_proc())},$Logger_debug$7.$$arity=-1),Opal.def(self,"$warn",$Logger_warn$8=function(progname){var $iter=$Logger_warn$8.$$p,block=$iter||nil;return $iter&&($Logger_warn$8.$$p=null),$iter&&($Logger_warn$8.$$p=null),null==progname&&(progname=nil),$send(this,"add",[$$($nesting,"WARN"),nil,progname],block.$to_proc())},$Logger_warn$8.$$arity=-1),Opal.def(self,"$error",$Logger_error$9=function(progname){var $iter=$Logger_error$9.$$p,block=$iter||nil;return $iter&&($Logger_error$9.$$p=null),$iter&&($Logger_error$9.$$p=null),null==progname&&(progname=nil),$send(this,"add",[$$($nesting,"ERROR"),nil,progname],block.$to_proc())},$Logger_error$9.$$arity=-1),Opal.def(self,"$fatal",$Logger_fatal$10=function(progname){var $iter=$Logger_fatal$10.$$p,block=$iter||nil;return $iter&&($Logger_fatal$10.$$p=null),$iter&&($Logger_fatal$10.$$p=null),null==progname&&(progname=nil),$send(this,"add",[$$($nesting,"FATAL"),nil,progname],block.$to_proc())},$Logger_fatal$10.$$arity=-1),Opal.def(self,"$unknown",$Logger_unknown$11=function(progname){var $iter=$Logger_unknown$11.$$p,block=$iter||nil;return $iter&&($Logger_unknown$11.$$p=null),$iter&&($Logger_unknown$11.$$p=null),null==progname&&(progname=nil),$send(this,"add",[$$($nesting,"UNKNOWN"),nil,progname],block.$to_proc())},$Logger_unknown$11.$$arity=-1),Opal.def(self,"$info?",$Logger_fatal$ques$16=function(){return $rb_le(this.level,$$($nesting,"INFO"))},$Logger_fatal$ques$16.$$arity=0),Opal.def(self,"$debug?",$Logger_fatal$ques$16=function(){return $rb_le(this.level,$$($nesting,"DEBUG"))},$Logger_fatal$ques$16.$$arity=0),Opal.def(self,"$warn?",$Logger_fatal$ques$16=function(){return $rb_le(this.level,$$($nesting,"WARN"))},$Logger_fatal$ques$16.$$arity=0),Opal.def(self,"$error?",$Logger_fatal$ques$16=function(){return $rb_le(this.level,$$($nesting,"ERROR"))},$Logger_fatal$ques$16.$$arity=0),Opal.def(self,"$fatal?",$Logger_fatal$ques$16=function(){return $rb_le(this.level,$$($nesting,"FATAL"))},$Logger_fatal$ques$16.$$arity=0),Opal.def(self,"$add",$Logger_add$17=function(severity,message,progname){var lhs=$Logger_add$17.$$p,block=lhs||nil,self=this,rhs=nil,$ret_or_2=nil,$ret_or_3=nil;return lhs&&($Logger_add$17.$$p=null),lhs&&($Logger_add$17.$$p=null),null==message&&(message=nil),null==progname&&(progname=nil),$truthy((lhs=severity=$truthy(rhs=severity)?rhs:$$($nesting,"UNKNOWN"),rhs=self.level,"number"==typeof lhs&&"number"==typeof rhs?lhs<rhs:lhs["$<"](rhs)))||(progname=$truthy($ret_or_2=progname)?$ret_or_2:self.progname,$truthy(message)||(block!==nil?message=Opal.yieldX(block,[]):(message=progname,progname=self.progname)),self.pipe.$write(self.formatter.$call($truthy($ret_or_3=$$($nesting,"SEVERITY_LABELS")["$[]"](severity))?$ret_or_3:"ANY",$$$("::","Time").$now(),progname,message))),!0},$Logger_add$17.$$arity=-2),nil&&"add"}($nesting[0],$nesting)};
+Opal.modules.logger=function(Opal){var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$klass=Opal.klass,$module=Opal.module,$const_set=Opal.const_set,$send=Opal.send,$def=Opal.def,$eqeqeq=Opal.eqeqeq,$truthy=Opal.truthy,$rb_le=Opal.rb_le,$rb_lt=Opal.rb_lt;return Opal.add_stubs("include,to_h,map,constants,const_get,to_s,format,chr,strftime,message_as_string,===,full_message,inspect,attr_reader,attr_accessor,new,key,upcase,raise,add,to_proc,<=,<,write,call,[],now"),function($base,$super,$parent_nesting){var self=$klass($base,null,"Logger"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;return $proto.level=$proto.progname=$proto.pipe=$proto.formatter=nil,function($base,$parent_nesting){var $nesting=[$module($base,"Severity")].concat($parent_nesting);$const_set($nesting[0],"DEBUG",0),$const_set($nesting[0],"INFO",1),$const_set($nesting[0],"WARN",2),$const_set($nesting[0],"ERROR",3),$const_set($nesting[0],"FATAL",4),$const_set($nesting[0],"UNKNOWN",5)}($nesting[0],$nesting),self.$include($$("Severity")),$const_set($nesting[0],"SEVERITY_LABELS",$send($$("Severity").$constants(),"map",[],(function(s){return null==s&&(s=nil),[$$("Severity").$const_get(s),s.$to_s()]}),1).$to_h()),function($base,$super,$parent_nesting){var self=$klass($base,null,"Formatter"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);$const_set($nesting[0],"MESSAGE_FORMAT","%s, [%s] %5s -- %s: %s\n"),$const_set($nesting[0],"DATE_TIME_FORMAT","%Y-%m-%dT%H:%M:%S.%6N"),$def(self,"$call",(function(severity,time,progname,msg){return this.$format($$("MESSAGE_FORMAT"),severity.$chr(),time.$strftime($$("DATE_TIME_FORMAT")),severity,progname,this.$message_as_string(msg))}),4),$def(self,"$message_as_string",(function(msg){var $ret_or_1;return $eqeqeq($$$("String"),$ret_or_1=msg)?msg:$eqeqeq($$$("Exception"),$ret_or_1)?msg.$full_message():msg.$inspect()}),1)}($nesting[0],0,$nesting),self.$attr_reader("level"),self.$attr_accessor("progname"),self.$attr_accessor("formatter"),$def(self,"$initialize",(function(pipe){return this.pipe=pipe,this.level=$$("DEBUG"),this.formatter=$$("Formatter").$new()}),1),$def(self,"$level=",(function(severity){var level=nil;return $eqeqeq($$$("Integer"),severity)?this.level=severity:$truthy(level=$$("SEVERITY_LABELS").$key(severity.$to_s().$upcase()))?this.level=level:this.$raise($$("ArgumentError"),"invalid log level: "+severity)}),1),$def(self,"$info",(function $$info(progname){var block=$$info.$$p||nil;return delete $$info.$$p,null==progname&&(progname=nil),$send(this,"add",[$$("INFO"),nil,progname],block.$to_proc())}),-1),$def(self,"$debug",(function $$debug(progname){var block=$$debug.$$p||nil;return delete $$debug.$$p,null==progname&&(progname=nil),$send(this,"add",[$$("DEBUG"),nil,progname],block.$to_proc())}),-1),$def(self,"$warn",(function $$warn(progname){var block=$$warn.$$p||nil;return delete $$warn.$$p,null==progname&&(progname=nil),$send(this,"add",[$$("WARN"),nil,progname],block.$to_proc())}),-1),$def(self,"$error",(function $$error(progname){var block=$$error.$$p||nil;return delete $$error.$$p,null==progname&&(progname=nil),$send(this,"add",[$$("ERROR"),nil,progname],block.$to_proc())}),-1),$def(self,"$fatal",(function $$fatal(progname){var block=$$fatal.$$p||nil;return delete $$fatal.$$p,null==progname&&(progname=nil),$send(this,"add",[$$("FATAL"),nil,progname],block.$to_proc())}),-1),$def(self,"$unknown",(function $$unknown(progname){var block=$$unknown.$$p||nil;return delete $$unknown.$$p,null==progname&&(progname=nil),$send(this,"add",[$$("UNKNOWN"),nil,progname],block.$to_proc())}),-1),$def(self,"$info?",(function(){return $rb_le(this.level,$$("INFO"))}),0),$def(self,"$debug?",(function(){return $rb_le(this.level,$$("DEBUG"))}),0),$def(self,"$warn?",(function(){return $rb_le(this.level,$$("WARN"))}),0),$def(self,"$error?",(function(){return $rb_le(this.level,$$("ERROR"))}),0),$def(self,"$fatal?",(function(){return $rb_le(this.level,$$("FATAL"))}),0),$def(self,"$add",(function $$add(severity,message,progname){var block=$$add.$$p||nil,$ret_or_1=nil;return delete $$add.$$p,null==message&&(message=nil),null==progname&&(progname=nil),$truthy($rb_lt(severity=$truthy($ret_or_1=severity)?$ret_or_1:$$("UNKNOWN"),this.level))||(progname=$truthy($ret_or_1=progname)?$ret_or_1:this.progname,$truthy(message)||(block!==nil?message=Opal.yieldX(block,[]):(message=progname,progname=this.progname)),this.pipe.$write(this.formatter.$call($truthy($ret_or_1=$$("SEVERITY_LABELS")["$[]"](severity))?$ret_or_1:"ANY",$$$("Time").$now(),progname,message))),!0}),-2)}($nesting[0],0,$nesting)};
diff --git a/opal/master/logger.min.js.gz b/opal/master/logger.min.js.gz
index bf729f1b..112ed70c 100644
Binary files a/opal/master/logger.min.js.gz and b/opal/master/logger.min.js.gz differ
diff --git a/opal/master/math.js b/opal/master/math.js
index 6eabe26f..725af79f 100644
--- a/opal/master/math.js
+++ b/opal/master/math.js
@@ -1,7 +1,6 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["math"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$;
+Opal.modules["math"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, nil = Opal.nil;
 
-  Opal.add_stubs(['$warn']);
+  Opal.add_stubs('warn');
   return self.$warn("DEPRECATION: math is now part of the core library, requiring it is deprecated")
 };
diff --git a/opal/master/math.min.js b/opal/master/math.min.js
index 630a5bd0..64e886b7 100644
--- a/opal/master/math.min.js
+++ b/opal/master/math.min.js
@@ -1 +1 @@
-Opal.modules.math=function(Opal){var self=Opal.top;Opal.nil,Opal.$$$,Opal.$$;return Opal.add_stubs(["$warn"]),self.$warn("DEPRECATION: math is now part of the core library, requiring it is deprecated")};
+Opal.modules.math=function(Opal){var self=Opal.top;Opal.nil;return Opal.add_stubs("warn"),self.$warn("DEPRECATION: math is now part of the core library, requiring it is deprecated")};
diff --git a/opal/master/math.min.js.gz b/opal/master/math.min.js.gz
index 63dbf321..5804e63e 100644
Binary files a/opal/master/math.min.js.gz and b/opal/master/math.min.js.gz differ
diff --git a/opal/master/matrix.js b/opal/master/matrix.js
index 58126365..d5c7a423 100644
--- a/opal/master/matrix.js
+++ b/opal/master/matrix.js
@@ -1,255 +1,187 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["e2mmap"] = function(Opal) {
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $send2 = Opal.send2, $find_super = Opal.find_super, $truthy = Opal.truthy, $send = Opal.send, $alias = Opal.alias, $hash2 = Opal.hash2, $gvars = Opal.gvars;
-
-  Opal.add_stubs(['$<', '$bind', '$module_eval', '$Raise', '$class', '$extend', '$def_e2message', '$def_exception', '$instance_eval', '$[]=', '$-', '$new', '$const_defined?', '$remove_const', '$const_set', '$e2mm_message', '$nil?', '$caller', '$=~', '$[]', '$quote', '$shift', '$raise', '$sprintf', '$Fail', '$inspect', '$each', '$ancestors']);
+Opal.modules["e2mmap"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $const_set = Opal.const_set, $send2 = Opal.send2, $find_super = Opal.find_super, $truthy = Opal.truthy, $rb_lt = Opal.rb_lt, $defs = Opal.defs, $send = Opal.send, $to_a = Opal.to_a, $def = Opal.def, $alias = Opal.alias, $hash2 = Opal.hash2, $rb_minus = Opal.rb_minus, $gvars = Opal.gvars, $regexp = Opal.regexp;
+
+  Opal.add_stubs('<,bind,module_eval,Raise,class,extend,def_e2message,def_exception,instance_eval,[]=,-,new,const_defined?,remove_const,const_set,e2mm_message,nil?,caller,=~,[],quote,shift,raise,sprintf,Fail,inspect,each,ancestors');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Exception2MessageMapper');
 
-    var $nesting = [self].concat($parent_nesting), $Exception2MessageMapper_extend_object$1, $Exception2MessageMapper_bind$2, $Exception2MessageMapper_Raise$6, $Exception2MessageMapper_def_e2message$7, $Exception2MessageMapper_def_exception$8, $Exception2MessageMapper_def_e2message$9, $Exception2MessageMapper_def_exception$11, $Exception2MessageMapper_Raise$14, $Exception2MessageMapper_e2mm_message$15;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
-    Opal.const_set($nesting[0], 'E2MM', $$($nesting, 'Exception2MessageMapper'));
-    Opal.defs($$($nesting, 'E2MM'), '$extend_object', $Exception2MessageMapper_extend_object$1 = function $$extend_object(cl) {
-      var $iter = $Exception2MessageMapper_extend_object$1.$$p, $yield = $iter || nil, self = this, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
-
-      if ($iter) $Exception2MessageMapper_extend_object$1.$$p = null;
-      // Prepare super implicit arguments
-      for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-        $zuper[$zuper_i] = arguments[$zuper_i];
-      }
+    $const_set($nesting[0], 'E2MM', $$('Exception2MessageMapper'));
+    $defs($$('E2MM'), '$extend_object', function $$extend_object(cl) {
+      var $yield = $$extend_object.$$p || nil, self = this;
+
+      delete $$extend_object.$$p;
       
-      $send2(self, $find_super(self, 'extend_object', $Exception2MessageMapper_extend_object$1, false, true), 'extend_object', $zuper, $iter);
-      if ($truthy($rb_lt(cl, $$($nesting, 'E2MM')))) {
+      $send2(self, $find_super(self, 'extend_object', $$extend_object, false, true), 'extend_object', [cl], $yield);
+      if ($truthy($rb_lt(cl, $$('E2MM')))) {
         return nil
       } else {
         return cl.$bind(self)
       };
-    }, $Exception2MessageMapper_extend_object$1.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$bind', $Exception2MessageMapper_bind$2 = function $$bind(cl) {
-      var $$3, self = this;
+    $def(self, '$bind', function $$bind(cl) {
+      var self = this;
 
-      return $send(self, 'module_eval', [], ($$3 = function(){var self = $$3.$$s == null ? this : $$3.$$s, $Raise$4, $included$5;
+      return $send(self, 'module_eval', [], function $$1(){var self = $$1.$$s == null ? this : $$1.$$s;
 
         
         
-        Opal.def(self, '$Raise', $Raise$4 = function $$Raise($a, $b) {
+        $def(self, '$Raise', function $$Raise($a, $b) {
           var $post_args, err, rest, self = this;
 
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
-          if ($post_args.length > 0) {
-            err = $post_args[0];
-            $post_args.splice(0, 1);
-          }
-          if (err == null) {
-            err = nil;
-          };
+          if ($post_args.length > 0) err = $post_args.shift();
+          if (err == null) err = nil;;
           
           rest = $post_args;;
-          return $send($$($nesting, 'Exception2MessageMapper'), 'Raise', [self.$class(), err].concat(Opal.to_a(rest)));
-        }, $Raise$4.$$arity = -1);
+          return $send($$('Exception2MessageMapper'), 'Raise', [self.$class(), err].concat($to_a(rest)));
+        }, -1);
         $alias(self, "Fail", "Raise");
         (function(self, $parent_nesting) {
-          var $nesting = [self].concat($parent_nesting);
-
+          
           
           
           Opal.udef(self, '$' + "included");;
           return nil;
         })(Opal.get_singleton_class(self), $nesting);
-        return (Opal.defs(self, '$included', $included$5 = function $$included(mod) {
-          var self = this;
-
-          return mod.$extend($$($nesting, 'Exception2MessageMapper'))
-        }, $included$5.$$arity = 1), nil) && 'included';}, $$3.$$s = self, $$3.$$arity = 0, $$3))
-    }, $Exception2MessageMapper_bind$2.$$arity = 1);
+        return $defs(self, '$included', function $$included(mod) {
+          
+          return mod.$extend($$('Exception2MessageMapper'))
+        }, 1);}, {$$arity: 0, $$s: self})
+    }, 1);
     
-    Opal.def(self, '$Raise', $Exception2MessageMapper_Raise$6 = function $$Raise($a, $b) {
+    $def(self, '$Raise', function $$Raise($a, $b) {
       var $post_args, err, rest, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
-      if ($post_args.length > 0) {
-        err = $post_args[0];
-        $post_args.splice(0, 1);
-      }
-      if (err == null) {
-        err = nil;
-      };
+      if ($post_args.length > 0) err = $post_args.shift();
+      if (err == null) err = nil;;
       
       rest = $post_args;;
-      return $send($$($nesting, 'E2MM'), 'Raise', [self, err].concat(Opal.to_a(rest)));
-    }, $Exception2MessageMapper_Raise$6.$$arity = -1);
+      return $send($$('E2MM'), 'Raise', [self, err].concat($to_a(rest)));
+    }, -1);
     $alias(self, "Fail", "Raise");
     $alias(self, "fail", "Raise");
     
-    Opal.def(self, '$def_e2message', $Exception2MessageMapper_def_e2message$7 = function $$def_e2message(c, m) {
+    $def(self, '$def_e2message', function $$def_e2message(c, m) {
       var self = this;
 
-      return $$($nesting, 'E2MM').$def_e2message(self, c, m)
-    }, $Exception2MessageMapper_def_e2message$7.$$arity = 2);
+      return $$('E2MM').$def_e2message(self, c, m)
+    }, 2);
     
-    Opal.def(self, '$def_exception', $Exception2MessageMapper_def_exception$8 = function $$def_exception(n, m, s) {
+    $def(self, '$def_exception', function $$def_exception(n, m, s) {
       var self = this;
 
       
       
-      if (s == null) {
-        s = $$($nesting, 'StandardError');
-      };
-      return $$($nesting, 'E2MM').$def_exception(self, n, m, s);
-    }, $Exception2MessageMapper_def_exception$8.$$arity = -3);
+      if (s == null) s = $$('StandardError');;
+      return $$('E2MM').$def_exception(self, n, m, s);
+    }, -3);
     self.MessageMap = $hash2([], {});
-    Opal.defs($$($nesting, 'E2MM'), '$def_e2message', $Exception2MessageMapper_def_e2message$9 = function $$def_e2message(k, c, m) {
-      var $$10, self = this;
+    $defs($$('E2MM'), '$def_e2message', function $$def_e2message(k, c, m) {
+      var self = this;
 
       
-      $send($$($nesting, 'E2MM'), 'instance_eval', [], ($$10 = function(){var self = $$10.$$s == null ? this : $$10.$$s, $writer = nil;
+      $send($$('E2MM'), 'instance_eval', [], function $$2(){var self = $$2.$$s == null ? this : $$2.$$s, $writer = nil;
         if (self.MessageMap == null) self.MessageMap = nil;
 
         
         $writer = [[k, c], m];
-        $send(self.MessageMap, '[]=', Opal.to_a($writer));
-        return $writer[$rb_minus($writer["length"], 1)];}, $$10.$$s = self, $$10.$$arity = 0, $$10));
+        $send(self.MessageMap, '[]=', $to_a($writer));
+        return $writer[$rb_minus($writer["length"], 1)];}, {$$arity: 0, $$s: self});
       return c;
-    }, $Exception2MessageMapper_def_e2message$9.$$arity = 3);
-    Opal.defs($$($nesting, 'E2MM'), '$def_exception', $Exception2MessageMapper_def_exception$11 = function $$def_exception(k, n, m, s) {
-      var $$12, $$13, self = this, e = nil;
+    }, 3);
+    $defs($$('E2MM'), '$def_exception', function $$def_exception(k, n, m, s) {
+      var self = this, e = nil;
 
       
       
-      if (s == null) {
-        s = $$($nesting, 'StandardError');
-      };
-      e = $$($nesting, 'Class').$new(s);
-      $send($$($nesting, 'E2MM'), 'instance_eval', [], ($$12 = function(){var self = $$12.$$s == null ? this : $$12.$$s, $writer = nil;
+      if (s == null) s = $$('StandardError');;
+      e = $$('Class').$new(s);
+      $send($$('E2MM'), 'instance_eval', [], function $$3(){var self = $$3.$$s == null ? this : $$3.$$s, $writer = nil;
         if (self.MessageMap == null) self.MessageMap = nil;
 
         
         $writer = [[k, e], m];
-        $send(self.MessageMap, '[]=', Opal.to_a($writer));
-        return $writer[$rb_minus($writer["length"], 1)];}, $$12.$$s = self, $$12.$$arity = 0, $$12));
+        $send(self.MessageMap, '[]=', $to_a($writer));
+        return $writer[$rb_minus($writer["length"], 1)];}, {$$arity: 0, $$s: self});
       if ($truthy(k['$const_defined?'](n, false))) {
-        $send(k, 'module_eval', [], ($$13 = function(){var self = $$13.$$s == null ? this : $$13.$$s;
+        $send(k, 'module_eval', [], function $$4(){var self = $$4.$$s == null ? this : $$4.$$s;
 
-          return self.$remove_const(n)}, $$13.$$s = self, $$13.$$arity = 0, $$13))};
+          return self.$remove_const(n)}, {$$arity: 0, $$s: self})
+      };
       return k.$const_set(n, e);
-    }, $Exception2MessageMapper_def_exception$11.$$arity = -4);
-    Opal.defs($$($nesting, 'E2MM'), '$Raise', $Exception2MessageMapper_Raise$14 = function $$Raise($a, $b, $c) {
+    }, -4);
+    $defs($$('E2MM'), '$Raise', function $$Raise($a, $b, $c) {
       var $post_args, klass, err, rest, self = this, form = nil, b = nil;
       if ($gvars["@"] == null) $gvars["@"] = nil;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
-      if ($post_args.length > 0) {
-        klass = $post_args[0];
-        $post_args.splice(0, 1);
-      }
-      if (klass == null) {
-        klass = $$($nesting, 'E2MM');
-      };
+      if ($post_args.length > 0) klass = $post_args.shift();
+      if (klass == null) klass = $$('E2MM');;
       
-      if ($post_args.length > 0) {
-        err = $post_args[0];
-        $post_args.splice(0, 1);
-      }
-      if (err == null) {
-        err = nil;
-      };
+      if ($post_args.length > 0) err = $post_args.shift();
+      if (err == null) err = nil;;
       
       rest = $post_args;;
       if ($truthy((form = self.$e2mm_message(klass, err)))) {
         
-        b = (function() {if ($truthy($gvars["@"]['$nil?']())) {
-          return self.$caller(1)
-        } else {
-          return $gvars["@"]
-        }; return nil; })();
-        if ($truthy(b['$[]'](0)['$=~'](Opal.regexp(["^", $$($nesting, 'Regexp').$quote("./e2mmap.rb"), ":"])))) {
-          b.$shift()};
-        return self.$raise(err, $send(self, 'sprintf', [form].concat(Opal.to_a(rest))), b);
+        b = ($truthy($gvars["@"]['$nil?']()) ? (self.$caller(1)) : ($gvars["@"]));
+        if ($truthy(b['$[]'](0)['$=~']($regexp(["^", $$('Regexp').$quote("./e2mmap.rb"), ":"])))) {
+          b.$shift()
+        };
+        return self.$raise(err, $send(self, 'sprintf', [form].concat($to_a(rest))), b);
       } else {
-        return $$($nesting, 'E2MM').$Fail($$($nesting, 'E2MM'), $$($nesting, 'ErrNotRegisteredException'), err.$inspect())
+        return $$('E2MM').$Fail($$('E2MM'), $$('ErrNotRegisteredException'), err.$inspect())
       };
-    }, $Exception2MessageMapper_Raise$14.$$arity = -1);
+    }, -1);
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return $alias(self, "Fail", "Raise")
-    })(Opal.get_singleton_class($$($nesting, 'E2MM')), $nesting);
-    Opal.defs($$($nesting, 'E2MM'), '$e2mm_message', $Exception2MessageMapper_e2mm_message$15 = function $$e2mm_message(klass, exp) {try {
+    })(Opal.get_singleton_class($$('E2MM')), $nesting);
+    $defs($$('E2MM'), '$e2mm_message', function $$e2mm_message(klass, exp) {try {
 
-      var $$16, self = this;
+      var self = this;
 
       
-      $send(klass.$ancestors(), 'each', [], ($$16 = function(c){var self = $$16.$$s == null ? this : $$16.$$s, mes = nil;
+      $send(klass.$ancestors(), 'each', [], function $$5(c){var self = $$5.$$s == null ? this : $$5.$$s, mes = nil;
         if (self.MessageMap == null) self.MessageMap = nil;
 
         
         
-        if (c == null) {
-          c = nil;
-        };
+        if (c == null) c = nil;;
         if ($truthy((mes = self.MessageMap['$[]']([c, exp])))) {
           Opal.ret(mes)
         } else {
           return nil
-        };}, $$16.$$s = self, $$16.$$arity = 1, $$16));
+        };}, {$$arity: 1, $$s: self});
       return nil;
       } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
-    }, $Exception2MessageMapper_e2mm_message$15.$$arity = 2);
+    }, 2);
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return $alias(self, "message", "e2mm_message")
     })(Opal.get_singleton_class(self), $nesting);
-    return $$($nesting, 'E2MM').$def_exception($$($nesting, 'E2MM'), "ErrNotRegisteredException", "not registered exception(%s)");
+    return $$('E2MM').$def_exception($$('E2MM'), "ErrNotRegisteredException", "not registered exception(%s)");
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["matrix/eigenvalue_decomposition"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_divide(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs / rhs : lhs['$/'](rhs);
-  }
-  function $rb_times(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs * rhs : lhs['$*'](rhs);
-  }
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  function $rb_le(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs <= rhs : lhs['$<='](rhs);
-  }
-  function $rb_ge(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs >= rhs : lhs['$>='](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send, $alias = Opal.alias;
-
-  Opal.add_stubs(['$is_a?', '$raise', '$class', '$row_count', '$new', '$symmetric?', '$to_a', '$tridiagonalize', '$diagonalize', '$reduce_to_hessenberg', '$hessenberg_to_real_schur', '$send', '$transpose', '$build_eigenvectors', '$inverse', '$dup', '$each_with_index', '$==', '$Complex', '$[]', '$[]=', '$-', '$map', '$diagonal', '$eigenvalues', '$v', '$d', '$v_inv', '$alias_method', '$private', '$>', '$+', '$-@', '$abs', '$/', '$*', '$times', '$downto', '$sqrt', '$upto', '$!=', '$max', '$<', '$<=', '$hypot', '$>=', '$min', '$cdiv']);
+Opal.modules["matrix/eigenvalue_decomposition"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send, $def = Opal.def, $alias = Opal.alias, $eqeq = Opal.eqeq, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $rb_gt = Opal.rb_gt, $rb_plus = Opal.rb_plus, $rb_divide = Opal.rb_divide, $rb_times = Opal.rb_times, $neqeq = Opal.neqeq, $rb_lt = Opal.rb_lt, $rb_le = Opal.rb_le, $rb_ge = Opal.rb_ge, $to_ary = Opal.to_ary;
+
+  Opal.add_stubs('is_a?,raise,class,row_count,new,symmetric?,to_a,tridiagonalize,diagonalize,reduce_to_hessenberg,hessenberg_to_real_schur,send,transpose,build_eigenvectors,inverse,dup,each_with_index,==,Complex,[],[]=,-,map,diagonal,eigenvalues,v,d,v_inv,alias_method,private,>,+,-@,abs,/,*,times,downto,sqrt,upto,!=,max,<,<=,hypot,>=,min,cdiv');
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Matrix');
 
@@ -258,22 +190,21 @@ Opal.modules["matrix/eigenvalue_decomposition"] = function(Opal) {
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'EigenvalueDecomposition');
 
-      var $nesting = [self].concat($parent_nesting), $EigenvalueDecomposition_initialize$1, $EigenvalueDecomposition_eigenvector_matrix$3, $EigenvalueDecomposition_eigenvector_matrix_inv$4, $EigenvalueDecomposition_eigenvalues$5, $EigenvalueDecomposition_eigenvectors$7, $EigenvalueDecomposition_eigenvalue_matrix$9, $EigenvalueDecomposition_to_ary$10, $EigenvalueDecomposition_build_eigenvectors$11, $EigenvalueDecomposition_cdiv$16, $EigenvalueDecomposition_tridiagonalize$17, $EigenvalueDecomposition_diagonalize$37, $EigenvalueDecomposition_reduce_to_hessenberg$46, $EigenvalueDecomposition_hessenberg_to_real_schur$63;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.size = self.$$prototype.symmetric = self.$$prototype.d = self.$$prototype.e = self.$$prototype.v = self.$$prototype.h = nil;
+      $proto.size = $proto.symmetric = $proto.d = $proto.e = $proto.v = $proto.h = nil;
       
       
-      Opal.def(self, '$initialize', $EigenvalueDecomposition_initialize$1 = function $$initialize(a) {
-        var $$2, self = this;
+      $def(self, '$initialize', function $$initialize(a) {
+        var self = this;
 
         
-        if ($truthy(a['$is_a?']($$($nesting, 'Matrix')))) {
-        } else {
-          self.$raise($$($nesting, 'TypeError'), "" + "Expected Matrix but got " + (a.$class()))
+        if (!$truthy(a['$is_a?']($$('Matrix')))) {
+          self.$raise($$('TypeError'), "Expected Matrix but got " + (a.$class()))
         };
         self.size = a.$row_count();
-        self.d = $$($nesting, 'Array').$new(self.size, 0);
-        self.e = $$($nesting, 'Array').$new(self.size, 0);
+        self.d = $$('Array').$new(self.size, 0);
+        self.e = $$('Array').$new(self.size, 0);
         if ($truthy((self.symmetric = a['$symmetric?']()))) {
           
           self.v = a.$to_a();
@@ -281,142 +212,124 @@ Opal.modules["matrix/eigenvalue_decomposition"] = function(Opal) {
           return self.$diagonalize();
         } else {
           
-          self.v = $send($$($nesting, 'Array'), 'new', [self.size], ($$2 = function(){var self = $$2.$$s == null ? this : $$2.$$s;
+          self.v = $send($$('Array'), 'new', [self.size], function $$1(){var self = $$1.$$s == null ? this : $$1.$$s;
             if (self.size == null) self.size = nil;
 
-            return $$($nesting, 'Array').$new(self.size, 0)}, $$2.$$s = self, $$2.$$arity = 0, $$2));
+            return $$('Array').$new(self.size, 0)}, {$$arity: 0, $$s: self});
           self.h = a.$to_a();
-          self.ort = $$($nesting, 'Array').$new(self.size, 0);
+          self.ort = $$('Array').$new(self.size, 0);
           self.$reduce_to_hessenberg();
           return self.$hessenberg_to_real_schur();
         };
-      }, $EigenvalueDecomposition_initialize$1.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$eigenvector_matrix', $EigenvalueDecomposition_eigenvector_matrix$3 = function $$eigenvector_matrix() {
+      $def(self, '$eigenvector_matrix', function $$eigenvector_matrix() {
         var self = this;
 
-        return $$($nesting, 'Matrix').$send("new", self.$build_eigenvectors().$transpose())
-      }, $EigenvalueDecomposition_eigenvector_matrix$3.$$arity = 0);
+        return $$('Matrix').$send("new", self.$build_eigenvectors().$transpose())
+      }, 0);
       $alias(self, "v", "eigenvector_matrix");
       
-      Opal.def(self, '$eigenvector_matrix_inv', $EigenvalueDecomposition_eigenvector_matrix_inv$4 = function $$eigenvector_matrix_inv() {
+      $def(self, '$eigenvector_matrix_inv', function $$eigenvector_matrix_inv() {
         var self = this, r = nil;
 
         
-        r = $$($nesting, 'Matrix').$send("new", self.$build_eigenvectors());
-        if ($truthy(self.symmetric)) {
-        } else {
+        r = $$('Matrix').$send("new", self.$build_eigenvectors());
+        if (!$truthy(self.symmetric)) {
           r = r.$transpose().$inverse()
         };
         return r;
-      }, $EigenvalueDecomposition_eigenvector_matrix_inv$4.$$arity = 0);
+      }, 0);
       $alias(self, "v_inv", "eigenvector_matrix_inv");
       
-      Opal.def(self, '$eigenvalues', $EigenvalueDecomposition_eigenvalues$5 = function $$eigenvalues() {
-        var $$6, self = this, values = nil;
+      $def(self, '$eigenvalues', function $$eigenvalues() {
+        var self = this, values = nil;
 
         
         values = self.d.$dup();
-        $send(self.e, 'each_with_index', [], ($$6 = function(imag, i){var self = $$6.$$s == null ? this : $$6.$$s, $writer = nil;
+        $send(self.e, 'each_with_index', [], function $$2(imag, i){var self = $$2.$$s == null ? this : $$2.$$s, $writer = nil;
 
           
           
-          if (imag == null) {
-            imag = nil;
-          };
+          if (imag == null) imag = nil;;
           
-          if (i == null) {
-            i = nil;
-          };
-          if (imag['$=='](0)) {
+          if (i == null) i = nil;;
+          if ($eqeq(imag, 0)) {
             return nil
           } else {
             
             $writer = [i, self.$Complex(values['$[]'](i), imag)];
-            $send(values, '[]=', Opal.to_a($writer));
+            $send(values, '[]=', $to_a($writer));
             return $writer[$rb_minus($writer["length"], 1)];
-          };}, $$6.$$s = self, $$6.$$arity = 2, $$6));
+          };}, {$$arity: 2, $$s: self});
         return values;
-      }, $EigenvalueDecomposition_eigenvalues$5.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$eigenvectors', $EigenvalueDecomposition_eigenvectors$7 = function $$eigenvectors() {
-        var $$8, self = this;
-
-        return $send(self.$build_eigenvectors(), 'map', [], ($$8 = function(ev){var self = $$8.$$s == null ? this : $$8.$$s;
+      $def(self, '$eigenvectors', function $$eigenvectors() {
+        var self = this;
 
+        return $send(self.$build_eigenvectors(), 'map', [], function $$3(ev){
           
           
-          if (ev == null) {
-            ev = nil;
-          };
-          return $$($nesting, 'Vector').$send("new", ev);}, $$8.$$s = self, $$8.$$arity = 1, $$8))
-      }, $EigenvalueDecomposition_eigenvectors$7.$$arity = 0);
+          if (ev == null) ev = nil;;
+          return $$('Vector').$send("new", ev);}, 1)
+      }, 0);
       
-      Opal.def(self, '$eigenvalue_matrix', $EigenvalueDecomposition_eigenvalue_matrix$9 = function $$eigenvalue_matrix() {
+      $def(self, '$eigenvalue_matrix', function $$eigenvalue_matrix() {
         var self = this;
 
-        return $send($$($nesting, 'Matrix'), 'diagonal', Opal.to_a(self.$eigenvalues()))
-      }, $EigenvalueDecomposition_eigenvalue_matrix$9.$$arity = 0);
+        return $send($$('Matrix'), 'diagonal', $to_a(self.$eigenvalues()))
+      }, 0);
       $alias(self, "d", "eigenvalue_matrix");
       
-      Opal.def(self, '$to_ary', $EigenvalueDecomposition_to_ary$10 = function $$to_ary() {
+      $def(self, '$to_ary', function $$to_ary() {
         var self = this;
 
         return [self.$v(), self.$d(), self.$v_inv()]
-      }, $EigenvalueDecomposition_to_ary$10.$$arity = 0);
+      }, 0);
       self.$alias_method("to_a", "to_ary");
       self.$private();
       
-      Opal.def(self, '$build_eigenvectors', $EigenvalueDecomposition_build_eigenvectors$11 = function $$build_eigenvectors() {
-        var $$12, self = this;
+      $def(self, '$build_eigenvectors', function $$build_eigenvectors() {
+        var self = this;
 
-        return $send(self.e.$each_with_index(), 'map', [], ($$12 = function(imag, i){var self = $$12.$$s == null ? this : $$12.$$s, $$13, $$14, $$15;
+        return $send(self.e.$each_with_index(), 'map', [], function $$4(imag, i){var self = $$4.$$s == null ? this : $$4.$$s;
           if (self.size == null) self.size = nil;
 
           
           
-          if (imag == null) {
-            imag = nil;
-          };
+          if (imag == null) imag = nil;;
           
-          if (i == null) {
-            i = nil;
-          };
-          if (imag['$=='](0)) {
-            return $send($$($nesting, 'Array'), 'new', [self.size], ($$13 = function(j){var self = $$13.$$s == null ? this : $$13.$$s;
+          if (i == null) i = nil;;
+          if ($eqeq(imag, 0)) {
+            return $send($$('Array'), 'new', [self.size], function $$5(j){var self = $$5.$$s == null ? this : $$5.$$s;
               if (self.v == null) self.v = nil;
 
               
               
-              if (j == null) {
-                j = nil;
-              };
-              return self.v['$[]'](j)['$[]'](i);}, $$13.$$s = self, $$13.$$arity = 1, $$13))
+              if (j == null) j = nil;;
+              return self.v['$[]'](j)['$[]'](i);}, {$$arity: 1, $$s: self})
           } else if ($truthy($rb_gt(imag, 0))) {
-            return $send($$($nesting, 'Array'), 'new', [self.size], ($$14 = function(j){var self = $$14.$$s == null ? this : $$14.$$s;
+            return $send($$('Array'), 'new', [self.size], function $$6(j){var self = $$6.$$s == null ? this : $$6.$$s;
               if (self.v == null) self.v = nil;
 
               
               
-              if (j == null) {
-                j = nil;
-              };
-              return self.$Complex(self.v['$[]'](j)['$[]'](i), self.v['$[]'](j)['$[]']($rb_plus(i, 1)));}, $$14.$$s = self, $$14.$$arity = 1, $$14))
+              if (j == null) j = nil;;
+              return self.$Complex(self.v['$[]'](j)['$[]'](i), self.v['$[]'](j)['$[]']($rb_plus(i, 1)));}, {$$arity: 1, $$s: self})
           } else {
-            return $send($$($nesting, 'Array'), 'new', [self.size], ($$15 = function(j){var self = $$15.$$s == null ? this : $$15.$$s;
+            return $send($$('Array'), 'new', [self.size], function $$7(j){var self = $$7.$$s == null ? this : $$7.$$s;
               if (self.v == null) self.v = nil;
 
               
               
-              if (j == null) {
-                j = nil;
-              };
-              return self.$Complex(self.v['$[]'](j)['$[]']($rb_minus(i, 1)), self.v['$[]'](j)['$[]'](i)['$-@']());}, $$15.$$s = self, $$15.$$arity = 1, $$15))
-          };}, $$12.$$s = self, $$12.$$arity = 2, $$12))
-      }, $EigenvalueDecomposition_build_eigenvectors$11.$$arity = 0);
+              if (j == null) j = nil;;
+              return self.$Complex(self.v['$[]'](j)['$[]']($rb_minus(i, 1)), self.v['$[]'](j)['$[]'](i)['$-@']());}, {$$arity: 1, $$s: self})
+          };}, {$$arity: 2, $$s: self})
+      }, 0);
       
-      Opal.def(self, '$cdiv', $EigenvalueDecomposition_cdiv$16 = function $$cdiv(xr, xi, yr, yi) {
-        var self = this, r = nil, d = nil;
+      $def(self, '$cdiv', function $$cdiv(xr, xi, yr, yi) {
+        var r = nil, d = nil;
 
         if ($truthy($rb_gt(yr.$abs(), yi.$abs()))) {
           
@@ -429,355 +342,316 @@ Opal.modules["matrix/eigenvalue_decomposition"] = function(Opal) {
           d = $rb_plus(yi, $rb_times(r, yr));
           return [$rb_divide($rb_plus($rb_times(r, xr), xi), d), $rb_divide($rb_minus($rb_times(r, xi), xr), d)];
         }
-      }, $EigenvalueDecomposition_cdiv$16.$$arity = 4);
+      }, 4);
       
-      Opal.def(self, '$tridiagonalize', $EigenvalueDecomposition_tridiagonalize$17 = function $$tridiagonalize() {
-        var $$18, $$19, $$30, $$36, self = this, $writer = nil;
+      $def(self, '$tridiagonalize', function $$tridiagonalize() {
+        var self = this, $writer = nil;
 
         
-        $send(self.size, 'times', [], ($$18 = function(j){var self = $$18.$$s == null ? this : $$18.$$s, $writer = nil;
+        $send(self.size, 'times', [], function $$8(j){var self = $$8.$$s == null ? this : $$8.$$s, $writer = nil;
           if (self.v == null) self.v = nil;
           if (self.size == null) self.size = nil;
           if (self.d == null) self.d = nil;
 
           
           
-          if (j == null) {
-            j = nil;
-          };
+          if (j == null) j = nil;;
           $writer = [j, self.v['$[]']($rb_minus(self.size, 1))['$[]'](j)];
-          $send(self.d, '[]=', Opal.to_a($writer));
-          return $writer[$rb_minus($writer["length"], 1)];}, $$18.$$s = self, $$18.$$arity = 1, $$18));
-        $send($rb_minus(self.size, 1), 'downto', [$rb_plus(0, 1)], ($$19 = function(i){var self = $$19.$$s == null ? this : $$19.$$s, $$20, $$21, $$22, $$23, $$24, $$26, $$27, $$28, scale = nil, h = nil, $writer = nil, f = nil, g = nil, hh = nil;
+          $send(self.d, '[]=', $to_a($writer));
+          return $writer[$rb_minus($writer["length"], 1)];}, {$$arity: 1, $$s: self});
+        $send($rb_minus(self.size, 1), 'downto', [$rb_plus(0, 1)], function $$9(i){var self = $$9.$$s == null ? this : $$9.$$s, scale = nil, h = nil, $writer = nil, f = nil, g = nil, hh = nil;
           if (self.d == null) self.d = nil;
           if (self.e == null) self.e = nil;
 
           
           
-          if (i == null) {
-            i = nil;
-          };
+          if (i == null) i = nil;;
           scale = 0.0;
           h = 0.0;
-          $send(i, 'times', [], ($$20 = function(k){var self = $$20.$$s == null ? this : $$20.$$s;
+          $send(i, 'times', [], function $$10(k){var self = $$10.$$s == null ? this : $$10.$$s;
             if (self.d == null) self.d = nil;
 
             
             
-            if (k == null) {
-              k = nil;
-            };
-            return (scale = $rb_plus(scale, self.d['$[]'](k).$abs()));}, $$20.$$s = self, $$20.$$arity = 1, $$20));
-          if ($truthy(scale['$=='](0.0))) {
+            if (k == null) k = nil;;
+            return (scale = $rb_plus(scale, self.d['$[]'](k).$abs()));}, {$$arity: 1, $$s: self});
+          if ($eqeq(scale, 0.0)) {
             
             
             $writer = [i, self.d['$[]']($rb_minus(i, 1))];
-            $send(self.e, '[]=', Opal.to_a($writer));
+            $send(self.e, '[]=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
-            $send(i, 'times', [], ($$21 = function(j){var self = $$21.$$s == null ? this : $$21.$$s;
+            $send(i, 'times', [], function $$11(j){var self = $$11.$$s == null ? this : $$11.$$s;
               if (self.v == null) self.v = nil;
               if (self.d == null) self.d = nil;
 
               
               
-              if (j == null) {
-                j = nil;
-              };
+              if (j == null) j = nil;;
               
               $writer = [j, self.v['$[]']($rb_minus(i, 1))['$[]'](j)];
-              $send(self.d, '[]=', Opal.to_a($writer));
+              $send(self.d, '[]=', $to_a($writer));
               $writer[$rb_minus($writer["length"], 1)];;
               
               $writer = [j, 0.0];
-              $send(self.v['$[]'](i), '[]=', Opal.to_a($writer));
+              $send(self.v['$[]'](i), '[]=', $to_a($writer));
               $writer[$rb_minus($writer["length"], 1)];;
               
               $writer = [i, 0.0];
-              $send(self.v['$[]'](j), '[]=', Opal.to_a($writer));
-              return $writer[$rb_minus($writer["length"], 1)];;}, $$21.$$s = self, $$21.$$arity = 1, $$21));
+              $send(self.v['$[]'](j), '[]=', $to_a($writer));
+              return $writer[$rb_minus($writer["length"], 1)];;}, {$$arity: 1, $$s: self});
           } else {
             
-            $send(i, 'times', [], ($$22 = function(k){var self = $$22.$$s == null ? this : $$22.$$s;
+            $send(i, 'times', [], function $$12(k){var self = $$12.$$s == null ? this : $$12.$$s;
               if (self.d == null) self.d = nil;
 
               
               
-              if (k == null) {
-                k = nil;
-              };
+              if (k == null) k = nil;;
               
               $writer = [k, $rb_divide(self.d['$[]'](k), scale)];
-              $send(self.d, '[]=', Opal.to_a($writer));
+              $send(self.d, '[]=', $to_a($writer));
               $writer[$rb_minus($writer["length"], 1)];;
-              return (h = $rb_plus(h, $rb_times(self.d['$[]'](k), self.d['$[]'](k))));}, $$22.$$s = self, $$22.$$arity = 1, $$22));
+              return (h = $rb_plus(h, $rb_times(self.d['$[]'](k), self.d['$[]'](k))));}, {$$arity: 1, $$s: self});
             f = self.d['$[]']($rb_minus(i, 1));
-            g = $$($nesting, 'Math').$sqrt(h);
+            g = $$('Math').$sqrt(h);
             if ($truthy($rb_gt(f, 0))) {
-              g = g['$-@']()};
+              g = g['$-@']()
+            };
             
             $writer = [i, $rb_times(scale, g)];
-            $send(self.e, '[]=', Opal.to_a($writer));
+            $send(self.e, '[]=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
             h = $rb_minus(h, $rb_times(f, g));
             
             $writer = [$rb_minus(i, 1), $rb_minus(f, g)];
-            $send(self.d, '[]=', Opal.to_a($writer));
+            $send(self.d, '[]=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
-            $send(i, 'times', [], ($$23 = function(j){var self = $$23.$$s == null ? this : $$23.$$s;
+            $send(i, 'times', [], function $$13(j){var self = $$13.$$s == null ? this : $$13.$$s;
               if (self.e == null) self.e = nil;
 
               
               
-              if (j == null) {
-                j = nil;
-              };
+              if (j == null) j = nil;;
               $writer = [j, 0.0];
-              $send(self.e, '[]=', Opal.to_a($writer));
-              return $writer[$rb_minus($writer["length"], 1)];}, $$23.$$s = self, $$23.$$arity = 1, $$23));
-            $send(i, 'times', [], ($$24 = function(j){var self = $$24.$$s == null ? this : $$24.$$s, $$25;
+              $send(self.e, '[]=', $to_a($writer));
+              return $writer[$rb_minus($writer["length"], 1)];}, {$$arity: 1, $$s: self});
+            $send(i, 'times', [], function $$14(j){var self = $$14.$$s == null ? this : $$14.$$s;
               if (self.d == null) self.d = nil;
               if (self.v == null) self.v = nil;
               if (self.e == null) self.e = nil;
 
               
               
-              if (j == null) {
-                j = nil;
-              };
+              if (j == null) j = nil;;
               f = self.d['$[]'](j);
               
               $writer = [i, f];
-              $send(self.v['$[]'](j), '[]=', Opal.to_a($writer));
+              $send(self.v['$[]'](j), '[]=', $to_a($writer));
               $writer[$rb_minus($writer["length"], 1)];;
               g = $rb_plus(self.e['$[]'](j), $rb_times(self.v['$[]'](j)['$[]'](j), f));
-              $send($rb_plus(j, 1), 'upto', [$rb_minus(i, 1)], ($$25 = function(k){var self = $$25.$$s == null ? this : $$25.$$s;
+              $send($rb_plus(j, 1), 'upto', [$rb_minus(i, 1)], function $$15(k){var self = $$15.$$s == null ? this : $$15.$$s;
                 if (self.v == null) self.v = nil;
                 if (self.d == null) self.d = nil;
                 if (self.e == null) self.e = nil;
 
                 
                 
-                if (k == null) {
-                  k = nil;
-                };
+                if (k == null) k = nil;;
                 g = $rb_plus(g, $rb_times(self.v['$[]'](k)['$[]'](j), self.d['$[]'](k)));
                 
                 $writer = [k, $rb_plus(self.e['$[]'](k), $rb_times(self.v['$[]'](k)['$[]'](j), f))];
-                $send(self.e, '[]=', Opal.to_a($writer));
-                return $writer[$rb_minus($writer["length"], 1)];;}, $$25.$$s = self, $$25.$$arity = 1, $$25));
+                $send(self.e, '[]=', $to_a($writer));
+                return $writer[$rb_minus($writer["length"], 1)];;}, {$$arity: 1, $$s: self});
               
               $writer = [j, g];
-              $send(self.e, '[]=', Opal.to_a($writer));
-              return $writer[$rb_minus($writer["length"], 1)];;}, $$24.$$s = self, $$24.$$arity = 1, $$24));
+              $send(self.e, '[]=', $to_a($writer));
+              return $writer[$rb_minus($writer["length"], 1)];;}, {$$arity: 1, $$s: self});
             f = 0.0;
-            $send(i, 'times', [], ($$26 = function(j){var self = $$26.$$s == null ? this : $$26.$$s;
+            $send(i, 'times', [], function $$16(j){var self = $$16.$$s == null ? this : $$16.$$s;
               if (self.e == null) self.e = nil;
               if (self.d == null) self.d = nil;
 
               
               
-              if (j == null) {
-                j = nil;
-              };
+              if (j == null) j = nil;;
               
               $writer = [j, $rb_divide(self.e['$[]'](j), h)];
-              $send(self.e, '[]=', Opal.to_a($writer));
+              $send(self.e, '[]=', $to_a($writer));
               $writer[$rb_minus($writer["length"], 1)];;
-              return (f = $rb_plus(f, $rb_times(self.e['$[]'](j), self.d['$[]'](j))));}, $$26.$$s = self, $$26.$$arity = 1, $$26));
+              return (f = $rb_plus(f, $rb_times(self.e['$[]'](j), self.d['$[]'](j))));}, {$$arity: 1, $$s: self});
             hh = $rb_divide(f, $rb_plus(h, h));
-            $send(i, 'times', [], ($$27 = function(j){var self = $$27.$$s == null ? this : $$27.$$s;
+            $send(i, 'times', [], function $$17(j){var self = $$17.$$s == null ? this : $$17.$$s;
               if (self.e == null) self.e = nil;
               if (self.d == null) self.d = nil;
 
               
               
-              if (j == null) {
-                j = nil;
-              };
+              if (j == null) j = nil;;
               $writer = [j, $rb_minus(self.e['$[]'](j), $rb_times(hh, self.d['$[]'](j)))];
-              $send(self.e, '[]=', Opal.to_a($writer));
-              return $writer[$rb_minus($writer["length"], 1)];}, $$27.$$s = self, $$27.$$arity = 1, $$27));
-            $send(i, 'times', [], ($$28 = function(j){var self = $$28.$$s == null ? this : $$28.$$s, $$29;
+              $send(self.e, '[]=', $to_a($writer));
+              return $writer[$rb_minus($writer["length"], 1)];}, {$$arity: 1, $$s: self});
+            $send(i, 'times', [], function $$18(j){var self = $$18.$$s == null ? this : $$18.$$s;
               if (self.d == null) self.d = nil;
               if (self.e == null) self.e = nil;
               if (self.v == null) self.v = nil;
 
               
               
-              if (j == null) {
-                j = nil;
-              };
+              if (j == null) j = nil;;
               f = self.d['$[]'](j);
               g = self.e['$[]'](j);
-              $send(j, 'upto', [$rb_minus(i, 1)], ($$29 = function(k){var self = $$29.$$s == null ? this : $$29.$$s, $binary_op_recvr_tmp_3 = nil;
+              $send(j, 'upto', [$rb_minus(i, 1)], function $$19(k){var self = $$19.$$s == null ? this : $$19.$$s, $binary_op_recvr_tmp_3 = nil;
                 if (self.v == null) self.v = nil;
                 if (self.e == null) self.e = nil;
                 if (self.d == null) self.d = nil;
 
                 
                 
-                if (k == null) {
-                  k = nil;
-                };
+                if (k == null) k = nil;;
                 $binary_op_recvr_tmp_3 = self.v['$[]'](k);
                 
                 $writer = [j, $rb_minus($binary_op_recvr_tmp_3['$[]'](j), $rb_plus($rb_times(f, self.e['$[]'](k)), $rb_times(g, self.d['$[]'](k))))];
-                $send($binary_op_recvr_tmp_3, '[]=', Opal.to_a($writer));
-                return $writer[$rb_minus($writer["length"], 1)];;}, $$29.$$s = self, $$29.$$arity = 1, $$29));
+                $send($binary_op_recvr_tmp_3, '[]=', $to_a($writer));
+                return $writer[$rb_minus($writer["length"], 1)];;}, {$$arity: 1, $$s: self});
               
               $writer = [j, self.v['$[]']($rb_minus(i, 1))['$[]'](j)];
-              $send(self.d, '[]=', Opal.to_a($writer));
+              $send(self.d, '[]=', $to_a($writer));
               $writer[$rb_minus($writer["length"], 1)];;
               
               $writer = [j, 0.0];
-              $send(self.v['$[]'](i), '[]=', Opal.to_a($writer));
-              return $writer[$rb_minus($writer["length"], 1)];;}, $$28.$$s = self, $$28.$$arity = 1, $$28));
+              $send(self.v['$[]'](i), '[]=', $to_a($writer));
+              return $writer[$rb_minus($writer["length"], 1)];;}, {$$arity: 1, $$s: self});
           };
           
           $writer = [i, h];
-          $send(self.d, '[]=', Opal.to_a($writer));
-          return $writer[$rb_minus($writer["length"], 1)];;}, $$19.$$s = self, $$19.$$arity = 1, $$19));
-        $send((0), 'upto', [$rb_minus($rb_minus(self.size, 1), 1)], ($$30 = function(i){var self = $$30.$$s == null ? this : $$30.$$s, $$31, $$32, $$35, $writer = nil, h = nil;
+          $send(self.d, '[]=', $to_a($writer));
+          return $writer[$rb_minus($writer["length"], 1)];;}, {$$arity: 1, $$s: self});
+        $send((0), 'upto', [$rb_minus($rb_minus(self.size, 1), 1)], function $$20(i){var self = $$20.$$s == null ? this : $$20.$$s, $writer = nil, h = nil;
           if (self.v == null) self.v = nil;
           if (self.size == null) self.size = nil;
           if (self.d == null) self.d = nil;
 
           
           
-          if (i == null) {
-            i = nil;
-          };
+          if (i == null) i = nil;;
           
           $writer = [i, self.v['$[]'](i)['$[]'](i)];
-          $send(self.v['$[]']($rb_minus(self.size, 1)), '[]=', Opal.to_a($writer));
+          $send(self.v['$[]']($rb_minus(self.size, 1)), '[]=', $to_a($writer));
           $writer[$rb_minus($writer["length"], 1)];;
           
           $writer = [i, 1.0];
-          $send(self.v['$[]'](i), '[]=', Opal.to_a($writer));
+          $send(self.v['$[]'](i), '[]=', $to_a($writer));
           $writer[$rb_minus($writer["length"], 1)];;
           h = self.d['$[]']($rb_plus(i, 1));
-          if ($truthy(h['$!='](0.0))) {
+          if ($neqeq(h, 0.0)) {
             
-            $send((0), 'upto', [i], ($$31 = function(k){var self = $$31.$$s == null ? this : $$31.$$s;
+            $send((0), 'upto', [i], function $$21(k){var self = $$21.$$s == null ? this : $$21.$$s;
               if (self.v == null) self.v = nil;
               if (self.d == null) self.d = nil;
 
               
               
-              if (k == null) {
-                k = nil;
-              };
+              if (k == null) k = nil;;
               $writer = [k, $rb_divide(self.v['$[]'](k)['$[]']($rb_plus(i, 1)), h)];
-              $send(self.d, '[]=', Opal.to_a($writer));
-              return $writer[$rb_minus($writer["length"], 1)];}, $$31.$$s = self, $$31.$$arity = 1, $$31));
-            $send((0), 'upto', [i], ($$32 = function(j){var self = $$32.$$s == null ? this : $$32.$$s, $$33, $$34, g = nil;
+              $send(self.d, '[]=', $to_a($writer));
+              return $writer[$rb_minus($writer["length"], 1)];}, {$$arity: 1, $$s: self});
+            $send((0), 'upto', [i], function $$22(j){var self = $$22.$$s == null ? this : $$22.$$s, g = nil;
 
               
               
-              if (j == null) {
-                j = nil;
-              };
+              if (j == null) j = nil;;
               g = 0.0;
-              $send((0), 'upto', [i], ($$33 = function(k){var self = $$33.$$s == null ? this : $$33.$$s;
+              $send((0), 'upto', [i], function $$23(k){var self = $$23.$$s == null ? this : $$23.$$s;
                 if (self.v == null) self.v = nil;
 
                 
                 
-                if (k == null) {
-                  k = nil;
-                };
-                return (g = $rb_plus(g, $rb_times(self.v['$[]'](k)['$[]']($rb_plus(i, 1)), self.v['$[]'](k)['$[]'](j))));}, $$33.$$s = self, $$33.$$arity = 1, $$33));
-              return $send((0), 'upto', [i], ($$34 = function(k){var self = $$34.$$s == null ? this : $$34.$$s, $binary_op_recvr_tmp_4 = nil;
+                if (k == null) k = nil;;
+                return (g = $rb_plus(g, $rb_times(self.v['$[]'](k)['$[]']($rb_plus(i, 1)), self.v['$[]'](k)['$[]'](j))));}, {$$arity: 1, $$s: self});
+              return $send((0), 'upto', [i], function $$24(k){var self = $$24.$$s == null ? this : $$24.$$s, $binary_op_recvr_tmp_4 = nil;
                 if (self.v == null) self.v = nil;
                 if (self.d == null) self.d = nil;
 
                 
                 
-                if (k == null) {
-                  k = nil;
-                };
+                if (k == null) k = nil;;
                 $binary_op_recvr_tmp_4 = self.v['$[]'](k);
                 
                 $writer = [j, $rb_minus($binary_op_recvr_tmp_4['$[]'](j), $rb_times(g, self.d['$[]'](k)))];
-                $send($binary_op_recvr_tmp_4, '[]=', Opal.to_a($writer));
-                return $writer[$rb_minus($writer["length"], 1)];;}, $$34.$$s = self, $$34.$$arity = 1, $$34));}, $$32.$$s = self, $$32.$$arity = 1, $$32));};
-          return $send((0), 'upto', [i], ($$35 = function(k){var self = $$35.$$s == null ? this : $$35.$$s;
+                $send($binary_op_recvr_tmp_4, '[]=', $to_a($writer));
+                return $writer[$rb_minus($writer["length"], 1)];;}, {$$arity: 1, $$s: self});}, {$$arity: 1, $$s: self});
+          };
+          return $send((0), 'upto', [i], function $$25(k){var self = $$25.$$s == null ? this : $$25.$$s;
             if (self.v == null) self.v = nil;
 
             
             
-            if (k == null) {
-              k = nil;
-            };
+            if (k == null) k = nil;;
             $writer = [$rb_plus(i, 1), 0.0];
-            $send(self.v['$[]'](k), '[]=', Opal.to_a($writer));
-            return $writer[$rb_minus($writer["length"], 1)];}, $$35.$$s = self, $$35.$$arity = 1, $$35));}, $$30.$$s = self, $$30.$$arity = 1, $$30));
-        $send(self.size, 'times', [], ($$36 = function(j){var self = $$36.$$s == null ? this : $$36.$$s, $writer = nil;
+            $send(self.v['$[]'](k), '[]=', $to_a($writer));
+            return $writer[$rb_minus($writer["length"], 1)];}, {$$arity: 1, $$s: self});}, {$$arity: 1, $$s: self});
+        $send(self.size, 'times', [], function $$26(j){var self = $$26.$$s == null ? this : $$26.$$s, $writer = nil;
           if (self.v == null) self.v = nil;
           if (self.size == null) self.size = nil;
           if (self.d == null) self.d = nil;
 
           
           
-          if (j == null) {
-            j = nil;
-          };
+          if (j == null) j = nil;;
           
           $writer = [j, self.v['$[]']($rb_minus(self.size, 1))['$[]'](j)];
-          $send(self.d, '[]=', Opal.to_a($writer));
+          $send(self.d, '[]=', $to_a($writer));
           $writer[$rb_minus($writer["length"], 1)];;
           
           $writer = [j, 0.0];
-          $send(self.v['$[]']($rb_minus(self.size, 1)), '[]=', Opal.to_a($writer));
-          return $writer[$rb_minus($writer["length"], 1)];;}, $$36.$$s = self, $$36.$$arity = 1, $$36));
+          $send(self.v['$[]']($rb_minus(self.size, 1)), '[]=', $to_a($writer));
+          return $writer[$rb_minus($writer["length"], 1)];;}, {$$arity: 1, $$s: self});
         
         $writer = [$rb_minus(self.size, 1), 1.0];
-        $send(self.v['$[]']($rb_minus(self.size, 1)), '[]=', Opal.to_a($writer));
+        $send(self.v['$[]']($rb_minus(self.size, 1)), '[]=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         
         $writer = [0, 0.0];
-        $send(self.e, '[]=', Opal.to_a($writer));
+        $send(self.e, '[]=', $to_a($writer));
         return $writer[$rb_minus($writer["length"], 1)];;
-      }, $EigenvalueDecomposition_tridiagonalize$17.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$diagonalize', $EigenvalueDecomposition_diagonalize$37 = function $$diagonalize() {
-        var $$38, $$39, $$43, self = this, $writer = nil, f = nil, tst1 = nil, eps = nil;
+      $def(self, '$diagonalize', function $$diagonalize() {
+        var self = this, $writer = nil, f = nil, tst1 = nil, eps = nil;
 
         
-        $send((1), 'upto', [$rb_minus(self.size, 1)], ($$38 = function(i){var self = $$38.$$s == null ? this : $$38.$$s, $writer = nil;
+        $send((1), 'upto', [$rb_minus(self.size, 1)], function $$27(i){var self = $$27.$$s == null ? this : $$27.$$s, $writer = nil;
           if (self.e == null) self.e = nil;
 
           
           
-          if (i == null) {
-            i = nil;
-          };
+          if (i == null) i = nil;;
           $writer = [$rb_minus(i, 1), self.e['$[]'](i)];
-          $send(self.e, '[]=', Opal.to_a($writer));
-          return $writer[$rb_minus($writer["length"], 1)];}, $$38.$$s = self, $$38.$$arity = 1, $$38));
+          $send(self.e, '[]=', $to_a($writer));
+          return $writer[$rb_minus($writer["length"], 1)];}, {$$arity: 1, $$s: self});
         
         $writer = [$rb_minus(self.size, 1), 0.0];
-        $send(self.e, '[]=', Opal.to_a($writer));
+        $send(self.e, '[]=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         f = 0.0;
         tst1 = 0.0;
-        eps = $$$($$($nesting, 'Float'), 'EPSILON');
-        $send(self.size, 'times', [], ($$39 = function(l){var self = $$39.$$s == null ? this : $$39.$$s, $a, $$40, $$41, m = nil, iter = nil, g = nil, p = nil, r = nil, dl1 = nil, h = nil, c = nil, c2 = nil, c3 = nil, el1 = nil, s = nil, s2 = nil;
+        eps = $$$($$('Float'), 'EPSILON');
+        $send(self.size, 'times', [], function $$28(l){var $a, self = $$28.$$s == null ? this : $$28.$$s, m = nil, iter = nil, g = nil, p = nil, r = nil, dl1 = nil, h = nil, c = nil, c2 = nil, c3 = nil, el1 = nil, s = nil, s2 = nil;
           if (self.d == null) self.d = nil;
           if (self.e == null) self.e = nil;
           if (self.size == null) self.size = nil;
 
           
           
-          if (l == null) {
-            l = nil;
-          };
+          if (l == null) l = nil;;
           tst1 = [tst1, $rb_plus(self.d['$[]'](l).$abs(), self.e['$[]'](l).$abs())].$max();
           m = l;
           while ($truthy($rb_lt(m, self.size))) {
             
             if ($truthy($rb_le(self.e['$[]'](m).$abs(), $rb_times(eps, tst1)))) {
-              break;};
+              break;
+            };
             m = $rb_plus(m, 1);
           };
           if ($truthy($rb_gt(m, l))) {
@@ -788,30 +662,29 @@ Opal.modules["matrix/eigenvalue_decomposition"] = function(Opal) {
               iter = $rb_plus(iter, 1);
               g = self.d['$[]'](l);
               p = $rb_divide($rb_minus(self.d['$[]']($rb_plus(l, 1)), g), $rb_times(2.0, self.e['$[]'](l)));
-              r = $$($nesting, 'Math').$hypot(p, 1.0);
+              r = $$('Math').$hypot(p, 1.0);
               if ($truthy($rb_lt(p, 0))) {
-                r = r['$-@']()};
+                r = r['$-@']()
+              };
               
               $writer = [l, $rb_divide(self.e['$[]'](l), $rb_plus(p, r))];
-              $send(self.d, '[]=', Opal.to_a($writer));
+              $send(self.d, '[]=', $to_a($writer));
               $writer[$rb_minus($writer["length"], 1)];;
               
               $writer = [$rb_plus(l, 1), $rb_times(self.e['$[]'](l), $rb_plus(p, r))];
-              $send(self.d, '[]=', Opal.to_a($writer));
+              $send(self.d, '[]=', $to_a($writer));
               $writer[$rb_minus($writer["length"], 1)];;
               dl1 = self.d['$[]']($rb_plus(l, 1));
               h = $rb_minus(g, self.d['$[]'](l));
-              $send($rb_plus(l, 2), 'upto', [$rb_minus(self.size, 1)], ($$40 = function(i){var self = $$40.$$s == null ? this : $$40.$$s;
+              $send($rb_plus(l, 2), 'upto', [$rb_minus(self.size, 1)], function $$29(i){var self = $$29.$$s == null ? this : $$29.$$s;
                 if (self.d == null) self.d = nil;
 
                 
                 
-                if (i == null) {
-                  i = nil;
-                };
+                if (i == null) i = nil;;
                 $writer = [i, $rb_minus(self.d['$[]'](i), h)];
-                $send(self.d, '[]=', Opal.to_a($writer));
-                return $writer[$rb_minus($writer["length"], 1)];}, $$40.$$s = self, $$40.$$arity = 1, $$40));
+                $send(self.d, '[]=', $to_a($writer));
+                return $writer[$rb_minus($writer["length"], 1)];}, {$$arity: 1, $$s: self});
               f = $rb_plus(f, h);
               p = self.d['$[]'](m);
               c = 1.0;
@@ -820,383 +693,332 @@ Opal.modules["matrix/eigenvalue_decomposition"] = function(Opal) {
               el1 = self.e['$[]']($rb_plus(l, 1));
               s = 0.0;
               s2 = 0.0;
-              $send($rb_minus(m, 1), 'downto', [l], ($$41 = function(i){var self = $$41.$$s == null ? this : $$41.$$s, $$42;
+              $send($rb_minus(m, 1), 'downto', [l], function $$30(i){var self = $$30.$$s == null ? this : $$30.$$s;
                 if (self.e == null) self.e = nil;
                 if (self.d == null) self.d = nil;
                 if (self.size == null) self.size = nil;
 
                 
                 
-                if (i == null) {
-                  i = nil;
-                };
+                if (i == null) i = nil;;
                 c3 = c2;
                 c2 = c;
                 s2 = s;
                 g = $rb_times(c, self.e['$[]'](i));
                 h = $rb_times(c, p);
-                r = $$($nesting, 'Math').$hypot(p, self.e['$[]'](i));
+                r = $$('Math').$hypot(p, self.e['$[]'](i));
                 
                 $writer = [$rb_plus(i, 1), $rb_times(s, r)];
-                $send(self.e, '[]=', Opal.to_a($writer));
+                $send(self.e, '[]=', $to_a($writer));
                 $writer[$rb_minus($writer["length"], 1)];;
                 s = $rb_divide(self.e['$[]'](i), r);
                 c = $rb_divide(p, r);
                 p = $rb_minus($rb_times(c, self.d['$[]'](i)), $rb_times(s, g));
                 
                 $writer = [$rb_plus(i, 1), $rb_plus(h, $rb_times(s, $rb_plus($rb_times(c, g), $rb_times(s, self.d['$[]'](i)))))];
-                $send(self.d, '[]=', Opal.to_a($writer));
+                $send(self.d, '[]=', $to_a($writer));
                 $writer[$rb_minus($writer["length"], 1)];;
-                return $send(self.size, 'times', [], ($$42 = function(k){var self = $$42.$$s == null ? this : $$42.$$s;
+                return $send(self.size, 'times', [], function $$31(k){var self = $$31.$$s == null ? this : $$31.$$s;
                   if (self.v == null) self.v = nil;
 
                   
                   
-                  if (k == null) {
-                    k = nil;
-                  };
+                  if (k == null) k = nil;;
                   h = self.v['$[]'](k)['$[]']($rb_plus(i, 1));
                   
                   $writer = [$rb_plus(i, 1), $rb_plus($rb_times(s, self.v['$[]'](k)['$[]'](i)), $rb_times(c, h))];
-                  $send(self.v['$[]'](k), '[]=', Opal.to_a($writer));
+                  $send(self.v['$[]'](k), '[]=', $to_a($writer));
                   $writer[$rb_minus($writer["length"], 1)];;
                   
                   $writer = [i, $rb_minus($rb_times(c, self.v['$[]'](k)['$[]'](i)), $rb_times(s, h))];
-                  $send(self.v['$[]'](k), '[]=', Opal.to_a($writer));
-                  return $writer[$rb_minus($writer["length"], 1)];;}, $$42.$$s = self, $$42.$$arity = 1, $$42));}, $$41.$$s = self, $$41.$$arity = 1, $$41));
+                  $send(self.v['$[]'](k), '[]=', $to_a($writer));
+                  return $writer[$rb_minus($writer["length"], 1)];;}, {$$arity: 1, $$s: self});}, {$$arity: 1, $$s: self});
               p = $rb_divide($rb_times($rb_times($rb_times($rb_times(s['$-@'](), s2), c3), el1), self.e['$[]'](l)), dl1);
               
               $writer = [l, $rb_times(s, p)];
-              $send(self.e, '[]=', Opal.to_a($writer));
+              $send(self.e, '[]=', $to_a($writer));
               $writer[$rb_minus($writer["length"], 1)];;
               
               $writer = [l, $rb_times(c, p)];
-              $send(self.d, '[]=', Opal.to_a($writer));
+              $send(self.d, '[]=', $to_a($writer));
               $writer[$rb_minus($writer["length"], 1)];;
-            } while ($truthy($rb_gt(self.e['$[]'](l).$abs(), $rb_times(eps, tst1))));;};
+            } while ($truthy($rb_gt(self.e['$[]'](l).$abs(), $rb_times(eps, tst1))));;
+          };
           
           $writer = [l, $rb_plus(self.d['$[]'](l), f)];
-          $send(self.d, '[]=', Opal.to_a($writer));
+          $send(self.d, '[]=', $to_a($writer));
           $writer[$rb_minus($writer["length"], 1)];;
           
           $writer = [l, 0.0];
-          $send(self.e, '[]=', Opal.to_a($writer));
-          return $writer[$rb_minus($writer["length"], 1)];;}, $$39.$$s = self, $$39.$$arity = 1, $$39));
-        return $send((0), 'upto', [$rb_minus(self.size, 2)], ($$43 = function(i){var self = $$43.$$s == null ? this : $$43.$$s, $$44, $$45, k = nil, p = nil;
+          $send(self.e, '[]=', $to_a($writer));
+          return $writer[$rb_minus($writer["length"], 1)];;}, {$$arity: 1, $$s: self});
+        return $send((0), 'upto', [$rb_minus(self.size, 2)], function $$32(i){var self = $$32.$$s == null ? this : $$32.$$s, k = nil, p = nil;
           if (self.d == null) self.d = nil;
           if (self.size == null) self.size = nil;
 
           
           
-          if (i == null) {
-            i = nil;
-          };
+          if (i == null) i = nil;;
           k = i;
           p = self.d['$[]'](i);
-          $send($rb_plus(i, 1), 'upto', [$rb_minus(self.size, 1)], ($$44 = function(j){var self = $$44.$$s == null ? this : $$44.$$s;
+          $send($rb_plus(i, 1), 'upto', [$rb_minus(self.size, 1)], function $$33(j){var self = $$33.$$s == null ? this : $$33.$$s;
             if (self.d == null) self.d = nil;
 
             
             
-            if (j == null) {
-              j = nil;
-            };
+            if (j == null) j = nil;;
             if ($truthy($rb_lt(self.d['$[]'](j), p))) {
               
               k = j;
               return (p = self.d['$[]'](j));
             } else {
               return nil
-            };}, $$44.$$s = self, $$44.$$arity = 1, $$44));
-          if ($truthy(k['$!='](i))) {
+            };}, {$$arity: 1, $$s: self});
+          if ($neqeq(k, i)) {
             
             
             $writer = [k, self.d['$[]'](i)];
-            $send(self.d, '[]=', Opal.to_a($writer));
+            $send(self.d, '[]=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
             
             $writer = [i, p];
-            $send(self.d, '[]=', Opal.to_a($writer));
+            $send(self.d, '[]=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
-            return $send(self.size, 'times', [], ($$45 = function(j){var self = $$45.$$s == null ? this : $$45.$$s;
+            return $send(self.size, 'times', [], function $$34(j){var self = $$34.$$s == null ? this : $$34.$$s;
               if (self.v == null) self.v = nil;
 
               
               
-              if (j == null) {
-                j = nil;
-              };
+              if (j == null) j = nil;;
               p = self.v['$[]'](j)['$[]'](i);
               
               $writer = [i, self.v['$[]'](j)['$[]'](k)];
-              $send(self.v['$[]'](j), '[]=', Opal.to_a($writer));
+              $send(self.v['$[]'](j), '[]=', $to_a($writer));
               $writer[$rb_minus($writer["length"], 1)];;
               
               $writer = [k, p];
-              $send(self.v['$[]'](j), '[]=', Opal.to_a($writer));
-              return $writer[$rb_minus($writer["length"], 1)];;}, $$45.$$s = self, $$45.$$arity = 1, $$45));
+              $send(self.v['$[]'](j), '[]=', $to_a($writer));
+              return $writer[$rb_minus($writer["length"], 1)];;}, {$$arity: 1, $$s: self});
           } else {
             return nil
-          };}, $$43.$$s = self, $$43.$$arity = 1, $$43));
-      }, $EigenvalueDecomposition_diagonalize$37.$$arity = 0);
+          };}, {$$arity: 1, $$s: self});
+      }, 0);
       
-      Opal.def(self, '$reduce_to_hessenberg', $EigenvalueDecomposition_reduce_to_hessenberg$46 = function $$reduce_to_hessenberg() {
-        var $$47, $$56, $$58, self = this, low = nil, high = nil;
+      $def(self, '$reduce_to_hessenberg', function $$reduce_to_hessenberg() {
+        var self = this, low = nil, high = nil;
 
         
         low = 0;
         high = $rb_minus(self.size, 1);
-        $send($rb_plus(low, 1), 'upto', [$rb_minus(high, 1)], ($$47 = function(m){var self = $$47.$$s == null ? this : $$47.$$s, $$48, $$49, $$50, $$53, scale = nil, h = nil, g = nil, $writer = nil;
+        $send($rb_plus(low, 1), 'upto', [$rb_minus(high, 1)], function $$35(m){var self = $$35.$$s == null ? this : $$35.$$s, scale = nil, h = nil, g = nil, $writer = nil;
           if (self.ort == null) self.ort = nil;
           if (self.size == null) self.size = nil;
           if (self.h == null) self.h = nil;
 
           
           
-          if (m == null) {
-            m = nil;
-          };
+          if (m == null) m = nil;;
           scale = 0.0;
-          $send(m, 'upto', [high], ($$48 = function(i){var self = $$48.$$s == null ? this : $$48.$$s;
+          $send(m, 'upto', [high], function $$36(i){var self = $$36.$$s == null ? this : $$36.$$s;
             if (self.h == null) self.h = nil;
 
             
             
-            if (i == null) {
-              i = nil;
-            };
-            return (scale = $rb_plus(scale, self.h['$[]'](i)['$[]']($rb_minus(m, 1)).$abs()));}, $$48.$$s = self, $$48.$$arity = 1, $$48));
-          if ($truthy(scale['$!='](0.0))) {
+            if (i == null) i = nil;;
+            return (scale = $rb_plus(scale, self.h['$[]'](i)['$[]']($rb_minus(m, 1)).$abs()));}, {$$arity: 1, $$s: self});
+          if ($neqeq(scale, 0.0)) {
             
             h = 0.0;
-            $send(high, 'downto', [m], ($$49 = function(i){var self = $$49.$$s == null ? this : $$49.$$s, $writer = nil;
+            $send(high, 'downto', [m], function $$37(i){var self = $$37.$$s == null ? this : $$37.$$s, $writer = nil;
               if (self.h == null) self.h = nil;
               if (self.ort == null) self.ort = nil;
 
               
               
-              if (i == null) {
-                i = nil;
-              };
+              if (i == null) i = nil;;
               
               $writer = [i, $rb_divide(self.h['$[]'](i)['$[]']($rb_minus(m, 1)), scale)];
-              $send(self.ort, '[]=', Opal.to_a($writer));
+              $send(self.ort, '[]=', $to_a($writer));
               $writer[$rb_minus($writer["length"], 1)];;
-              return (h = $rb_plus(h, $rb_times(self.ort['$[]'](i), self.ort['$[]'](i))));}, $$49.$$s = self, $$49.$$arity = 1, $$49));
-            g = $$($nesting, 'Math').$sqrt(h);
+              return (h = $rb_plus(h, $rb_times(self.ort['$[]'](i), self.ort['$[]'](i))));}, {$$arity: 1, $$s: self});
+            g = $$('Math').$sqrt(h);
             if ($truthy($rb_gt(self.ort['$[]'](m), 0))) {
-              g = g['$-@']()};
+              g = g['$-@']()
+            };
             h = $rb_minus(h, $rb_times(self.ort['$[]'](m), g));
             
             $writer = [m, $rb_minus(self.ort['$[]'](m), g)];
-            $send(self.ort, '[]=', Opal.to_a($writer));
+            $send(self.ort, '[]=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
-            $send(m, 'upto', [$rb_minus(self.size, 1)], ($$50 = function(j){var self = $$50.$$s == null ? this : $$50.$$s, $$51, $$52, f = nil;
+            $send(m, 'upto', [$rb_minus(self.size, 1)], function $$38(j){var self = $$38.$$s == null ? this : $$38.$$s, f = nil;
 
               
               
-              if (j == null) {
-                j = nil;
-              };
+              if (j == null) j = nil;;
               f = 0.0;
-              $send(high, 'downto', [m], ($$51 = function(i){var self = $$51.$$s == null ? this : $$51.$$s;
+              $send(high, 'downto', [m], function $$39(i){var self = $$39.$$s == null ? this : $$39.$$s;
                 if (self.ort == null) self.ort = nil;
                 if (self.h == null) self.h = nil;
 
                 
                 
-                if (i == null) {
-                  i = nil;
-                };
-                return (f = $rb_plus(f, $rb_times(self.ort['$[]'](i), self.h['$[]'](i)['$[]'](j))));}, $$51.$$s = self, $$51.$$arity = 1, $$51));
+                if (i == null) i = nil;;
+                return (f = $rb_plus(f, $rb_times(self.ort['$[]'](i), self.h['$[]'](i)['$[]'](j))));}, {$$arity: 1, $$s: self});
               f = $rb_divide(f, h);
-              return $send(m, 'upto', [high], ($$52 = function(i){var self = $$52.$$s == null ? this : $$52.$$s, $binary_op_recvr_tmp_5 = nil;
+              return $send(m, 'upto', [high], function $$40(i){var self = $$40.$$s == null ? this : $$40.$$s, $binary_op_recvr_tmp_5 = nil;
                 if (self.h == null) self.h = nil;
                 if (self.ort == null) self.ort = nil;
 
                 
                 
-                if (i == null) {
-                  i = nil;
-                };
+                if (i == null) i = nil;;
                 $binary_op_recvr_tmp_5 = self.h['$[]'](i);
                 
                 $writer = [j, $rb_minus($binary_op_recvr_tmp_5['$[]'](j), $rb_times(f, self.ort['$[]'](i)))];
-                $send($binary_op_recvr_tmp_5, '[]=', Opal.to_a($writer));
-                return $writer[$rb_minus($writer["length"], 1)];;}, $$52.$$s = self, $$52.$$arity = 1, $$52));}, $$50.$$s = self, $$50.$$arity = 1, $$50));
-            $send((0), 'upto', [high], ($$53 = function(i){var self = $$53.$$s == null ? this : $$53.$$s, $$54, $$55, f = nil;
+                $send($binary_op_recvr_tmp_5, '[]=', $to_a($writer));
+                return $writer[$rb_minus($writer["length"], 1)];;}, {$$arity: 1, $$s: self});}, {$$arity: 1, $$s: self});
+            $send((0), 'upto', [high], function $$41(i){var self = $$41.$$s == null ? this : $$41.$$s, f = nil;
 
               
               
-              if (i == null) {
-                i = nil;
-              };
+              if (i == null) i = nil;;
               f = 0.0;
-              $send(high, 'downto', [m], ($$54 = function(j){var self = $$54.$$s == null ? this : $$54.$$s;
+              $send(high, 'downto', [m], function $$42(j){var self = $$42.$$s == null ? this : $$42.$$s;
                 if (self.ort == null) self.ort = nil;
                 if (self.h == null) self.h = nil;
 
                 
                 
-                if (j == null) {
-                  j = nil;
-                };
-                return (f = $rb_plus(f, $rb_times(self.ort['$[]'](j), self.h['$[]'](i)['$[]'](j))));}, $$54.$$s = self, $$54.$$arity = 1, $$54));
+                if (j == null) j = nil;;
+                return (f = $rb_plus(f, $rb_times(self.ort['$[]'](j), self.h['$[]'](i)['$[]'](j))));}, {$$arity: 1, $$s: self});
               f = $rb_divide(f, h);
-              return $send(m, 'upto', [high], ($$55 = function(j){var self = $$55.$$s == null ? this : $$55.$$s, $binary_op_recvr_tmp_6 = nil;
+              return $send(m, 'upto', [high], function $$43(j){var self = $$43.$$s == null ? this : $$43.$$s, $binary_op_recvr_tmp_6 = nil;
                 if (self.h == null) self.h = nil;
                 if (self.ort == null) self.ort = nil;
 
                 
                 
-                if (j == null) {
-                  j = nil;
-                };
+                if (j == null) j = nil;;
                 $binary_op_recvr_tmp_6 = self.h['$[]'](i);
                 
                 $writer = [j, $rb_minus($binary_op_recvr_tmp_6['$[]'](j), $rb_times(f, self.ort['$[]'](j)))];
-                $send($binary_op_recvr_tmp_6, '[]=', Opal.to_a($writer));
-                return $writer[$rb_minus($writer["length"], 1)];;}, $$55.$$s = self, $$55.$$arity = 1, $$55));}, $$53.$$s = self, $$53.$$arity = 1, $$53));
+                $send($binary_op_recvr_tmp_6, '[]=', $to_a($writer));
+                return $writer[$rb_minus($writer["length"], 1)];;}, {$$arity: 1, $$s: self});}, {$$arity: 1, $$s: self});
             
             $writer = [m, $rb_times(scale, self.ort['$[]'](m))];
-            $send(self.ort, '[]=', Opal.to_a($writer));
+            $send(self.ort, '[]=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
             
             $writer = [$rb_minus(m, 1), $rb_times(scale, g)];
-            $send(self.h['$[]'](m), '[]=', Opal.to_a($writer));
+            $send(self.h['$[]'](m), '[]=', $to_a($writer));
             return $writer[$rb_minus($writer["length"], 1)];;
           } else {
             return nil
-          };}, $$47.$$s = self, $$47.$$arity = 1, $$47));
-        $send(self.size, 'times', [], ($$56 = function(i){var self = $$56.$$s == null ? this : $$56.$$s, $$57;
+          };}, {$$arity: 1, $$s: self});
+        $send(self.size, 'times', [], function $$44(i){var self = $$44.$$s == null ? this : $$44.$$s;
           if (self.size == null) self.size = nil;
 
           
           
-          if (i == null) {
-            i = nil;
-          };
-          return $send(self.size, 'times', [], ($$57 = function(j){var self = $$57.$$s == null ? this : $$57.$$s, $writer = nil;
+          if (i == null) i = nil;;
+          return $send(self.size, 'times', [], function $$45(j){var self = $$45.$$s == null ? this : $$45.$$s, $writer = nil;
             if (self.v == null) self.v = nil;
 
             
             
-            if (j == null) {
-              j = nil;
-            };
-            $writer = [j, (function() {if (i['$=='](j)) {
-              return 1.0
-            } else {
-              return 0.0
-            }; return nil; })()];
-            $send(self.v['$[]'](i), '[]=', Opal.to_a($writer));
-            return $writer[$rb_minus($writer["length"], 1)];}, $$57.$$s = self, $$57.$$arity = 1, $$57));}, $$56.$$s = self, $$56.$$arity = 1, $$56));
-        return $send($rb_minus(high, 1), 'downto', [$rb_plus(low, 1)], ($$58 = function(m){var self = $$58.$$s == null ? this : $$58.$$s, $$59, $$60;
+            if (j == null) j = nil;;
+            $writer = [j, ($eqeq(i, j) ? (1.0) : (0.0))];
+            $send(self.v['$[]'](i), '[]=', $to_a($writer));
+            return $writer[$rb_minus($writer["length"], 1)];}, {$$arity: 1, $$s: self});}, {$$arity: 1, $$s: self});
+        return $send($rb_minus(high, 1), 'downto', [$rb_plus(low, 1)], function $$46(m){var self = $$46.$$s == null ? this : $$46.$$s;
           if (self.h == null) self.h = nil;
 
           
           
-          if (m == null) {
-            m = nil;
-          };
-          if ($truthy(self.h['$[]'](m)['$[]']($rb_minus(m, 1))['$!='](0.0))) {
+          if (m == null) m = nil;;
+          if ($neqeq(self.h['$[]'](m)['$[]']($rb_minus(m, 1)), 0.0)) {
             
-            $send($rb_plus(m, 1), 'upto', [high], ($$59 = function(i){var self = $$59.$$s == null ? this : $$59.$$s, $writer = nil;
+            $send($rb_plus(m, 1), 'upto', [high], function $$47(i){var self = $$47.$$s == null ? this : $$47.$$s, $writer = nil;
               if (self.h == null) self.h = nil;
               if (self.ort == null) self.ort = nil;
 
               
               
-              if (i == null) {
-                i = nil;
-              };
+              if (i == null) i = nil;;
               $writer = [i, self.h['$[]'](i)['$[]']($rb_minus(m, 1))];
-              $send(self.ort, '[]=', Opal.to_a($writer));
-              return $writer[$rb_minus($writer["length"], 1)];}, $$59.$$s = self, $$59.$$arity = 1, $$59));
-            return $send(m, 'upto', [high], ($$60 = function(j){var self = $$60.$$s == null ? this : $$60.$$s, $$61, $$62, g = nil;
+              $send(self.ort, '[]=', $to_a($writer));
+              return $writer[$rb_minus($writer["length"], 1)];}, {$$arity: 1, $$s: self});
+            return $send(m, 'upto', [high], function $$48(j){var self = $$48.$$s == null ? this : $$48.$$s, g = nil;
               if (self.ort == null) self.ort = nil;
               if (self.h == null) self.h = nil;
 
               
               
-              if (j == null) {
-                j = nil;
-              };
+              if (j == null) j = nil;;
               g = 0.0;
-              $send(m, 'upto', [high], ($$61 = function(i){var self = $$61.$$s == null ? this : $$61.$$s;
+              $send(m, 'upto', [high], function $$49(i){var self = $$49.$$s == null ? this : $$49.$$s;
                 if (self.ort == null) self.ort = nil;
                 if (self.v == null) self.v = nil;
 
                 
                 
-                if (i == null) {
-                  i = nil;
-                };
-                return (g = $rb_plus(g, $rb_times(self.ort['$[]'](i), self.v['$[]'](i)['$[]'](j))));}, $$61.$$s = self, $$61.$$arity = 1, $$61));
+                if (i == null) i = nil;;
+                return (g = $rb_plus(g, $rb_times(self.ort['$[]'](i), self.v['$[]'](i)['$[]'](j))));}, {$$arity: 1, $$s: self});
               g = $rb_divide($rb_divide(g, self.ort['$[]'](m)), self.h['$[]'](m)['$[]']($rb_minus(m, 1)));
-              return $send(m, 'upto', [high], ($$62 = function(i){var self = $$62.$$s == null ? this : $$62.$$s, $binary_op_recvr_tmp_7 = nil, $writer = nil;
+              return $send(m, 'upto', [high], function $$50(i){var self = $$50.$$s == null ? this : $$50.$$s, $binary_op_recvr_tmp_7 = nil, $writer = nil;
                 if (self.v == null) self.v = nil;
                 if (self.ort == null) self.ort = nil;
 
                 
                 
-                if (i == null) {
-                  i = nil;
-                };
+                if (i == null) i = nil;;
                 $binary_op_recvr_tmp_7 = self.v['$[]'](i);
                 
                 $writer = [j, $rb_plus($binary_op_recvr_tmp_7['$[]'](j), $rb_times(g, self.ort['$[]'](i)))];
-                $send($binary_op_recvr_tmp_7, '[]=', Opal.to_a($writer));
-                return $writer[$rb_minus($writer["length"], 1)];;}, $$62.$$s = self, $$62.$$arity = 1, $$62));}, $$60.$$s = self, $$60.$$arity = 1, $$60));
+                $send($binary_op_recvr_tmp_7, '[]=', $to_a($writer));
+                return $writer[$rb_minus($writer["length"], 1)];;}, {$$arity: 1, $$s: self});}, {$$arity: 1, $$s: self});
           } else {
             return nil
-          };}, $$58.$$s = self, $$58.$$arity = 1, $$58));
-      }, $EigenvalueDecomposition_reduce_to_hessenberg$46.$$arity = 0);
-      return (Opal.def(self, '$hessenberg_to_real_schur', $EigenvalueDecomposition_hessenberg_to_real_schur$63 = function $$hessenberg_to_real_schur() {
-        var $$64, $a, $b, $$66, $$67, $$68, $$69, $$70, $$71, $$72, $$76, $$83, $$85, self = this, nn = nil, n = nil, low = nil, high = nil, eps = nil, exshift = nil, p = nil, q = nil, r = nil, s = nil, z = nil, norm = nil, iter = nil, l = nil, $writer = nil, w = nil, x = nil, y = nil, m = nil;
+          };}, {$$arity: 1, $$s: self});
+      }, 0);
+      return $def(self, '$hessenberg_to_real_schur', function $$hessenberg_to_real_schur() {
+        var $a, $b, self = this, nn = nil, n = nil, low = nil, high = nil, eps = nil, exshift = nil, p = nil, q = nil, r = nil, s = nil, z = nil, norm = nil, iter = nil, l = nil, $writer = nil, w = nil, x = nil, y = nil, m = nil;
 
         
         nn = self.size;
         n = $rb_minus(nn, 1);
         low = 0;
         high = $rb_minus(nn, 1);
-        eps = $$$($$($nesting, 'Float'), 'EPSILON');
+        eps = $$$($$('Float'), 'EPSILON');
         exshift = 0.0;
         p = (q = (r = (s = (z = 0))));
         norm = 0.0;
-        $send(nn, 'times', [], ($$64 = function(i){var self = $$64.$$s == null ? this : $$64.$$s, $$65, $ret_or_1 = nil, $writer = nil;
+        $send(nn, 'times', [], function $$51(i){var self = $$51.$$s == null ? this : $$51.$$s, $writer = nil;
           if (self.h == null) self.h = nil;
           if (self.d == null) self.d = nil;
           if (self.e == null) self.e = nil;
 
           
           
-          if (i == null) {
-            i = nil;
-          };
-          if ($truthy((function() {if ($truthy(($ret_or_1 = $rb_lt(i, low)))) {
-            return $ret_or_1
-          } else {
-            return $rb_gt(i, high)
-          }; return nil; })())) {
+          if (i == null) i = nil;;
+          if (($truthy($rb_lt(i, low)) || ($truthy($rb_gt(i, high))))) {
             
             
             $writer = [i, self.h['$[]'](i)['$[]'](i)];
-            $send(self.d, '[]=', Opal.to_a($writer));
+            $send(self.d, '[]=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
             
             $writer = [i, 0.0];
-            $send(self.e, '[]=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];;};
-          return $send([$rb_minus(i, 1), 0].$max(), 'upto', [$rb_minus(nn, 1)], ($$65 = function(j){var self = $$65.$$s == null ? this : $$65.$$s;
+            $send(self.e, '[]=', $to_a($writer));
+            $writer[$rb_minus($writer["length"], 1)];;
+          };
+          return $send([$rb_minus(i, 1), 0].$max(), 'upto', [$rb_minus(nn, 1)], function $$52(j){var self = $$52.$$s == null ? this : $$52.$$s;
             if (self.h == null) self.h = nil;
 
             
             
-            if (j == null) {
-              j = nil;
-            };
-            return (norm = $rb_plus(norm, self.h['$[]'](i)['$[]'](j).$abs()));}, $$65.$$s = self, $$65.$$arity = 1, $$65));}, $$64.$$s = self, $$64.$$arity = 1, $$64));
+            if (j == null) j = nil;;
+            return (norm = $rb_plus(norm, self.h['$[]'](i)['$[]'](j).$abs()));}, {$$arity: 1, $$s: self});}, {$$arity: 1, $$s: self});
         iter = 0;
         while ($truthy($rb_ge(n, low))) {
           
@@ -1204,41 +1026,43 @@ Opal.modules["matrix/eigenvalue_decomposition"] = function(Opal) {
           while ($truthy($rb_gt(l, low))) {
             
             s = $rb_plus(self.h['$[]']($rb_minus(l, 1))['$[]']($rb_minus(l, 1)).$abs(), self.h['$[]'](l)['$[]'](l).$abs());
-            if ($truthy(s['$=='](0.0))) {
-              s = norm};
+            if ($eqeq(s, 0.0)) {
+              s = norm
+            };
             if ($truthy($rb_lt(self.h['$[]'](l)['$[]']($rb_minus(l, 1)).$abs(), $rb_times(eps, s)))) {
-              break;};
+              break;
+            };
             l = $rb_minus(l, 1);
           };
-          if ($truthy(l['$=='](n))) {
+          if ($eqeq(l, n)) {
             
             
             $writer = [n, $rb_plus(self.h['$[]'](n)['$[]'](n), exshift)];
-            $send(self.h['$[]'](n), '[]=', Opal.to_a($writer));
+            $send(self.h['$[]'](n), '[]=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
             
             $writer = [n, self.h['$[]'](n)['$[]'](n)];
-            $send(self.d, '[]=', Opal.to_a($writer));
+            $send(self.d, '[]=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
             
             $writer = [n, 0.0];
-            $send(self.e, '[]=', Opal.to_a($writer));
+            $send(self.e, '[]=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
             n = $rb_minus(n, 1);
             iter = 0;
-          } else if ($truthy(l['$==']($rb_minus(n, 1)))) {
+          } else if ($eqeq(l, $rb_minus(n, 1))) {
             
             w = $rb_times(self.h['$[]'](n)['$[]']($rb_minus(n, 1)), self.h['$[]']($rb_minus(n, 1))['$[]'](n));
             p = $rb_divide($rb_minus(self.h['$[]']($rb_minus(n, 1))['$[]']($rb_minus(n, 1)), self.h['$[]'](n)['$[]'](n)), 2.0);
             q = $rb_plus($rb_times(p, p), w);
-            z = $$($nesting, 'Math').$sqrt(q.$abs());
+            z = $$('Math').$sqrt(q.$abs());
             
             $writer = [n, $rb_plus(self.h['$[]'](n)['$[]'](n), exshift)];
-            $send(self.h['$[]'](n), '[]=', Opal.to_a($writer));
+            $send(self.h['$[]'](n), '[]=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
             
             $writer = [$rb_minus(n, 1), $rb_plus(self.h['$[]']($rb_minus(n, 1))['$[]']($rb_minus(n, 1)), exshift)];
-            $send(self.h['$[]']($rb_minus(n, 1)), '[]=', Opal.to_a($writer));
+            $send(self.h['$[]']($rb_minus(n, 1)), '[]=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
             x = self.h['$[]'](n)['$[]'](n);
             if ($truthy($rb_ge(q, 0))) {
@@ -1250,100 +1074,95 @@ Opal.modules["matrix/eigenvalue_decomposition"] = function(Opal) {
               };
               
               $writer = [$rb_minus(n, 1), $rb_plus(x, z)];
-              $send(self.d, '[]=', Opal.to_a($writer));
+              $send(self.d, '[]=', $to_a($writer));
               $writer[$rb_minus($writer["length"], 1)];;
               
               $writer = [n, self.d['$[]']($rb_minus(n, 1))];
-              $send(self.d, '[]=', Opal.to_a($writer));
+              $send(self.d, '[]=', $to_a($writer));
               $writer[$rb_minus($writer["length"], 1)];;
-              if ($truthy(z['$!='](0.0))) {
+              if ($neqeq(z, 0.0)) {
                 
                 $writer = [n, $rb_minus(x, $rb_divide(w, z))];
-                $send(self.d, '[]=', Opal.to_a($writer));
-                $writer[$rb_minus($writer["length"], 1)];};
+                $send(self.d, '[]=', $to_a($writer));
+                $writer[$rb_minus($writer["length"], 1)];
+              };
               
               $writer = [$rb_minus(n, 1), 0.0];
-              $send(self.e, '[]=', Opal.to_a($writer));
+              $send(self.e, '[]=', $to_a($writer));
               $writer[$rb_minus($writer["length"], 1)];;
               
               $writer = [n, 0.0];
-              $send(self.e, '[]=', Opal.to_a($writer));
+              $send(self.e, '[]=', $to_a($writer));
               $writer[$rb_minus($writer["length"], 1)];;
               x = self.h['$[]'](n)['$[]']($rb_minus(n, 1));
               s = $rb_plus(x.$abs(), z.$abs());
               p = $rb_divide(x, s);
               q = $rb_divide(z, s);
-              r = $$($nesting, 'Math').$sqrt($rb_plus($rb_times(p, p), $rb_times(q, q)));
+              r = $$('Math').$sqrt($rb_plus($rb_times(p, p), $rb_times(q, q)));
               p = $rb_divide(p, r);
               q = $rb_divide(q, r);
-              $send($rb_minus(n, 1), 'upto', [$rb_minus(nn, 1)], ($$66 = function(j){var self = $$66.$$s == null ? this : $$66.$$s;
+              $send($rb_minus(n, 1), 'upto', [$rb_minus(nn, 1)], function $$53(j){var self = $$53.$$s == null ? this : $$53.$$s;
                 if (self.h == null) self.h = nil;
 
                 
                 
-                if (j == null) {
-                  j = nil;
-                };
+                if (j == null) j = nil;;
                 z = self.h['$[]']($rb_minus(n, 1))['$[]'](j);
                 
                 $writer = [j, $rb_plus($rb_times(q, z), $rb_times(p, self.h['$[]'](n)['$[]'](j)))];
-                $send(self.h['$[]']($rb_minus(n, 1)), '[]=', Opal.to_a($writer));
+                $send(self.h['$[]']($rb_minus(n, 1)), '[]=', $to_a($writer));
                 $writer[$rb_minus($writer["length"], 1)];;
                 
                 $writer = [j, $rb_minus($rb_times(q, self.h['$[]'](n)['$[]'](j)), $rb_times(p, z))];
-                $send(self.h['$[]'](n), '[]=', Opal.to_a($writer));
-                return $writer[$rb_minus($writer["length"], 1)];;}, $$66.$$s = self, $$66.$$arity = 1, $$66));
-              $send((0), 'upto', [n], ($$67 = function(i){var self = $$67.$$s == null ? this : $$67.$$s;
+                $send(self.h['$[]'](n), '[]=', $to_a($writer));
+                return $writer[$rb_minus($writer["length"], 1)];;}, {$$arity: 1, $$s: self});
+              $send((0), 'upto', [n], function $$54(i){var self = $$54.$$s == null ? this : $$54.$$s;
                 if (self.h == null) self.h = nil;
 
                 
                 
-                if (i == null) {
-                  i = nil;
-                };
+                if (i == null) i = nil;;
                 z = self.h['$[]'](i)['$[]']($rb_minus(n, 1));
                 
                 $writer = [$rb_minus(n, 1), $rb_plus($rb_times(q, z), $rb_times(p, self.h['$[]'](i)['$[]'](n)))];
-                $send(self.h['$[]'](i), '[]=', Opal.to_a($writer));
+                $send(self.h['$[]'](i), '[]=', $to_a($writer));
                 $writer[$rb_minus($writer["length"], 1)];;
                 
                 $writer = [n, $rb_minus($rb_times(q, self.h['$[]'](i)['$[]'](n)), $rb_times(p, z))];
-                $send(self.h['$[]'](i), '[]=', Opal.to_a($writer));
-                return $writer[$rb_minus($writer["length"], 1)];;}, $$67.$$s = self, $$67.$$arity = 1, $$67));
-              $send(low, 'upto', [high], ($$68 = function(i){var self = $$68.$$s == null ? this : $$68.$$s;
+                $send(self.h['$[]'](i), '[]=', $to_a($writer));
+                return $writer[$rb_minus($writer["length"], 1)];;}, {$$arity: 1, $$s: self});
+              $send(low, 'upto', [high], function $$55(i){var self = $$55.$$s == null ? this : $$55.$$s;
                 if (self.v == null) self.v = nil;
 
                 
                 
-                if (i == null) {
-                  i = nil;
-                };
+                if (i == null) i = nil;;
                 z = self.v['$[]'](i)['$[]']($rb_minus(n, 1));
                 
                 $writer = [$rb_minus(n, 1), $rb_plus($rb_times(q, z), $rb_times(p, self.v['$[]'](i)['$[]'](n)))];
-                $send(self.v['$[]'](i), '[]=', Opal.to_a($writer));
+                $send(self.v['$[]'](i), '[]=', $to_a($writer));
                 $writer[$rb_minus($writer["length"], 1)];;
                 
                 $writer = [n, $rb_minus($rb_times(q, self.v['$[]'](i)['$[]'](n)), $rb_times(p, z))];
-                $send(self.v['$[]'](i), '[]=', Opal.to_a($writer));
-                return $writer[$rb_minus($writer["length"], 1)];;}, $$68.$$s = self, $$68.$$arity = 1, $$68));
+                $send(self.v['$[]'](i), '[]=', $to_a($writer));
+                return $writer[$rb_minus($writer["length"], 1)];;}, {$$arity: 1, $$s: self});
             } else {
               
               
               $writer = [$rb_minus(n, 1), $rb_plus(x, p)];
-              $send(self.d, '[]=', Opal.to_a($writer));
+              $send(self.d, '[]=', $to_a($writer));
               $writer[$rb_minus($writer["length"], 1)];;
               
               $writer = [n, $rb_plus(x, p)];
-              $send(self.d, '[]=', Opal.to_a($writer));
+              $send(self.d, '[]=', $to_a($writer));
               $writer[$rb_minus($writer["length"], 1)];;
               
               $writer = [$rb_minus(n, 1), z];
-              $send(self.e, '[]=', Opal.to_a($writer));
+              $send(self.e, '[]=', $to_a($writer));
               $writer[$rb_minus($writer["length"], 1)];;
               
               $writer = [n, z['$-@']()];
-              $send(self.e, '[]=', Opal.to_a($writer));
+              $send(self.e, '[]=', $to_a($writer));
               $writer[$rb_minus($writer["length"], 1)];;
             };
             n = $rb_minus(n, 2);
@@ -1356,51 +1175,52 @@ Opal.modules["matrix/eigenvalue_decomposition"] = function(Opal) {
             if ($truthy($rb_lt(l, n))) {
               
               y = self.h['$[]']($rb_minus(n, 1))['$[]']($rb_minus(n, 1));
-              w = $rb_times(self.h['$[]'](n)['$[]']($rb_minus(n, 1)), self.h['$[]']($rb_minus(n, 1))['$[]'](n));};
-            if ($truthy(iter['$=='](10))) {
+              w = $rb_times(self.h['$[]'](n)['$[]']($rb_minus(n, 1)), self.h['$[]']($rb_minus(n, 1))['$[]'](n));
+            };
+            if ($eqeq(iter, 10)) {
               
               exshift = $rb_plus(exshift, x);
-              $send(low, 'upto', [n], ($$69 = function(i){var self = $$69.$$s == null ? this : $$69.$$s, $binary_op_recvr_tmp_8 = nil;
+              $send(low, 'upto', [n], function $$56(i){var self = $$56.$$s == null ? this : $$56.$$s, $binary_op_recvr_tmp_8 = nil;
                 if (self.h == null) self.h = nil;
 
                 
                 
-                if (i == null) {
-                  i = nil;
-                };
+                if (i == null) i = nil;;
                 $binary_op_recvr_tmp_8 = self.h['$[]'](i);
                 
                 $writer = [i, $rb_minus($binary_op_recvr_tmp_8['$[]'](i), x)];
-                $send($binary_op_recvr_tmp_8, '[]=', Opal.to_a($writer));
-                return $writer[$rb_minus($writer["length"], 1)];;}, $$69.$$s = self, $$69.$$arity = 1, $$69));
+                $send($binary_op_recvr_tmp_8, '[]=', $to_a($writer));
+                return $writer[$rb_minus($writer["length"], 1)];;}, {$$arity: 1, $$s: self});
               s = $rb_plus(self.h['$[]'](n)['$[]']($rb_minus(n, 1)).$abs(), self.h['$[]']($rb_minus(n, 1))['$[]']($rb_minus(n, 2)).$abs());
               x = (y = $rb_times(0.75, s));
-              w = $rb_times($rb_times(-0.4375, s), s);};
-            if ($truthy(iter['$=='](30))) {
+              w = $rb_times($rb_times(-0.4375, s), s);
+            };
+            if ($eqeq(iter, 30)) {
               
               s = $rb_divide($rb_minus(y, x), 2.0);
               s = $rb_times(s, $rb_plus(s, w));
               if ($truthy($rb_gt(s, 0))) {
                 
-                s = $$($nesting, 'Math').$sqrt(s);
+                s = $$('Math').$sqrt(s);
                 if ($truthy($rb_lt(y, x))) {
-                  s = s['$-@']()};
+                  s = s['$-@']()
+                };
                 s = $rb_minus(x, $rb_divide(w, $rb_plus($rb_divide($rb_minus(y, x), 2.0), s)));
-                $send(low, 'upto', [n], ($$70 = function(i){var self = $$70.$$s == null ? this : $$70.$$s, $binary_op_recvr_tmp_9 = nil;
+                $send(low, 'upto', [n], function $$57(i){var self = $$57.$$s == null ? this : $$57.$$s, $binary_op_recvr_tmp_9 = nil;
                   if (self.h == null) self.h = nil;
 
                   
                   
-                  if (i == null) {
-                    i = nil;
-                  };
+                  if (i == null) i = nil;;
                   $binary_op_recvr_tmp_9 = self.h['$[]'](i);
                   
                   $writer = [i, $rb_minus($binary_op_recvr_tmp_9['$[]'](i), s)];
-                  $send($binary_op_recvr_tmp_9, '[]=', Opal.to_a($writer));
-                  return $writer[$rb_minus($writer["length"], 1)];;}, $$70.$$s = self, $$70.$$arity = 1, $$70));
+                  $send($binary_op_recvr_tmp_9, '[]=', $to_a($writer));
+                  return $writer[$rb_minus($writer["length"], 1)];;}, {$$arity: 1, $$s: self});
                 exshift = $rb_plus(exshift, s);
-                x = (y = (w = 0.964));};};
+                x = (y = (w = 0.964));
+              };
+            };
             iter = $rb_plus(iter, 1);
             m = $rb_minus(n, 2);
             while ($truthy($rb_ge(m, l))) {
@@ -1415,196 +1235,186 @@ Opal.modules["matrix/eigenvalue_decomposition"] = function(Opal) {
               p = $rb_divide(p, s);
               q = $rb_divide(q, s);
               r = $rb_divide(r, s);
-              if ($truthy(m['$=='](l))) {
-                break;};
+              if ($eqeq(m, l)) {
+                break;
+              };
               if ($truthy($rb_lt($rb_times(self.h['$[]'](m)['$[]']($rb_minus(m, 1)).$abs(), $rb_plus(q.$abs(), r.$abs())), $rb_times(eps, $rb_times(p.$abs(), $rb_plus($rb_plus(self.h['$[]']($rb_minus(m, 1))['$[]']($rb_minus(m, 1)).$abs(), z.$abs()), self.h['$[]']($rb_plus(m, 1))['$[]']($rb_plus(m, 1)).$abs())))))) {
-                break;};
+                break;
+              };
               m = $rb_minus(m, 1);
             };
-            $send($rb_plus(m, 2), 'upto', [n], ($$71 = function(i){var self = $$71.$$s == null ? this : $$71.$$s;
+            $send($rb_plus(m, 2), 'upto', [n], function $$58(i){var self = $$58.$$s == null ? this : $$58.$$s;
               if (self.h == null) self.h = nil;
 
               
               
-              if (i == null) {
-                i = nil;
-              };
+              if (i == null) i = nil;;
               
               $writer = [$rb_minus(i, 2), 0.0];
-              $send(self.h['$[]'](i), '[]=', Opal.to_a($writer));
+              $send(self.h['$[]'](i), '[]=', $to_a($writer));
               $writer[$rb_minus($writer["length"], 1)];;
               if ($truthy($rb_gt(i, $rb_plus(m, 2)))) {
                 
                 $writer = [$rb_minus(i, 3), 0.0];
-                $send(self.h['$[]'](i), '[]=', Opal.to_a($writer));
+                $send(self.h['$[]'](i), '[]=', $to_a($writer));
                 return $writer[$rb_minus($writer["length"], 1)];
               } else {
                 return nil
-              };}, $$71.$$s = self, $$71.$$arity = 1, $$71));
-            $send(m, 'upto', [$rb_minus(n, 1)], ($$72 = function(k){var self = $$72.$$s == null ? this : $$72.$$s, $$73, $$74, $$75, notlast = nil;
+              };}, {$$arity: 1, $$s: self});
+            $send(m, 'upto', [$rb_minus(n, 1)], function $$59(k){var self = $$59.$$s == null ? this : $$59.$$s, notlast = nil;
               if (self.h == null) self.h = nil;
 
               
               
-              if (k == null) {
-                k = nil;
-              };
+              if (k == null) k = nil;;
               notlast = k['$!=']($rb_minus(n, 1));
-              if ($truthy(k['$!='](m))) {
+              if ($neqeq(k, m)) {
                 
                 p = self.h['$[]'](k)['$[]']($rb_minus(k, 1));
                 q = self.h['$[]']($rb_plus(k, 1))['$[]']($rb_minus(k, 1));
-                r = (function() {if ($truthy(notlast)) {
-                  return self.h['$[]']($rb_plus(k, 2))['$[]']($rb_minus(k, 1))
-                } else {
-                  return 0.0
-                }; return nil; })();
+                r = ($truthy(notlast) ? (self.h['$[]']($rb_plus(k, 2))['$[]']($rb_minus(k, 1))) : (0.0));
                 x = $rb_plus($rb_plus(p.$abs(), q.$abs()), r.$abs());
-                if (x['$=='](0)) {
-                  return nil;};
+                if ($eqeq(x, 0)) {
+                  return nil;
+                };
                 p = $rb_divide(p, x);
                 q = $rb_divide(q, x);
-                r = $rb_divide(r, x);};
-              s = $$($nesting, 'Math').$sqrt($rb_plus($rb_plus($rb_times(p, p), $rb_times(q, q)), $rb_times(r, r)));
+                r = $rb_divide(r, x);
+              };
+              s = $$('Math').$sqrt($rb_plus($rb_plus($rb_times(p, p), $rb_times(q, q)), $rb_times(r, r)));
               if ($truthy($rb_lt(p, 0))) {
-                s = s['$-@']()};
-              if ($truthy(s['$!='](0))) {
+                s = s['$-@']()
+              };
+              if ($neqeq(s, 0)) {
                 
-                if ($truthy(k['$!='](m))) {
+                if ($neqeq(k, m)) {
                   
                   $writer = [$rb_minus(k, 1), $rb_times(s['$-@'](), x)];
-                  $send(self.h['$[]'](k), '[]=', Opal.to_a($writer));
+                  $send(self.h['$[]'](k), '[]=', $to_a($writer));
                   $writer[$rb_minus($writer["length"], 1)];
-                } else if ($truthy(l['$!='](m))) {
+                } else if ($neqeq(l, m)) {
                   
                   $writer = [$rb_minus(k, 1), self.h['$[]'](k)['$[]']($rb_minus(k, 1))['$-@']()];
-                  $send(self.h['$[]'](k), '[]=', Opal.to_a($writer));
-                  $writer[$rb_minus($writer["length"], 1)];};
+                  $send(self.h['$[]'](k), '[]=', $to_a($writer));
+                  $writer[$rb_minus($writer["length"], 1)];
+                };
                 p = $rb_plus(p, s);
                 x = $rb_divide(p, s);
                 y = $rb_divide(q, s);
                 z = $rb_divide(r, s);
                 q = $rb_divide(q, p);
                 r = $rb_divide(r, p);
-                $send(k, 'upto', [$rb_minus(nn, 1)], ($$73 = function(j){var self = $$73.$$s == null ? this : $$73.$$s;
+                $send(k, 'upto', [$rb_minus(nn, 1)], function $$60(j){var self = $$60.$$s == null ? this : $$60.$$s;
                   if (self.h == null) self.h = nil;
 
                   
                   
-                  if (j == null) {
-                    j = nil;
-                  };
+                  if (j == null) j = nil;;
                   p = $rb_plus(self.h['$[]'](k)['$[]'](j), $rb_times(q, self.h['$[]']($rb_plus(k, 1))['$[]'](j)));
                   if ($truthy(notlast)) {
                     
                     p = $rb_plus(p, $rb_times(r, self.h['$[]']($rb_plus(k, 2))['$[]'](j)));
                     
                     $writer = [j, $rb_minus(self.h['$[]']($rb_plus(k, 2))['$[]'](j), $rb_times(p, z))];
-                    $send(self.h['$[]']($rb_plus(k, 2)), '[]=', Opal.to_a($writer));
-                    $writer[$rb_minus($writer["length"], 1)];;};
+                    $send(self.h['$[]']($rb_plus(k, 2)), '[]=', $to_a($writer));
+                    $writer[$rb_minus($writer["length"], 1)];;
+                  };
                   
                   $writer = [j, $rb_minus(self.h['$[]'](k)['$[]'](j), $rb_times(p, x))];
-                  $send(self.h['$[]'](k), '[]=', Opal.to_a($writer));
+                  $send(self.h['$[]'](k), '[]=', $to_a($writer));
                   $writer[$rb_minus($writer["length"], 1)];;
                   
                   $writer = [j, $rb_minus(self.h['$[]']($rb_plus(k, 1))['$[]'](j), $rb_times(p, y))];
-                  $send(self.h['$[]']($rb_plus(k, 1)), '[]=', Opal.to_a($writer));
-                  return $writer[$rb_minus($writer["length"], 1)];;}, $$73.$$s = self, $$73.$$arity = 1, $$73));
-                $send((0), 'upto', [[n, $rb_plus(k, 3)].$min()], ($$74 = function(i){var self = $$74.$$s == null ? this : $$74.$$s;
+                  $send(self.h['$[]']($rb_plus(k, 1)), '[]=', $to_a($writer));
+                  return $writer[$rb_minus($writer["length"], 1)];;}, {$$arity: 1, $$s: self});
+                $send((0), 'upto', [[n, $rb_plus(k, 3)].$min()], function $$61(i){var self = $$61.$$s == null ? this : $$61.$$s;
                   if (self.h == null) self.h = nil;
 
                   
                   
-                  if (i == null) {
-                    i = nil;
-                  };
+                  if (i == null) i = nil;;
                   p = $rb_plus($rb_times(x, self.h['$[]'](i)['$[]'](k)), $rb_times(y, self.h['$[]'](i)['$[]']($rb_plus(k, 1))));
                   if ($truthy(notlast)) {
                     
                     p = $rb_plus(p, $rb_times(z, self.h['$[]'](i)['$[]']($rb_plus(k, 2))));
                     
                     $writer = [$rb_plus(k, 2), $rb_minus(self.h['$[]'](i)['$[]']($rb_plus(k, 2)), $rb_times(p, r))];
-                    $send(self.h['$[]'](i), '[]=', Opal.to_a($writer));
-                    $writer[$rb_minus($writer["length"], 1)];;};
+                    $send(self.h['$[]'](i), '[]=', $to_a($writer));
+                    $writer[$rb_minus($writer["length"], 1)];;
+                  };
                   
                   $writer = [k, $rb_minus(self.h['$[]'](i)['$[]'](k), p)];
-                  $send(self.h['$[]'](i), '[]=', Opal.to_a($writer));
+                  $send(self.h['$[]'](i), '[]=', $to_a($writer));
                   $writer[$rb_minus($writer["length"], 1)];;
                   
                   $writer = [$rb_plus(k, 1), $rb_minus(self.h['$[]'](i)['$[]']($rb_plus(k, 1)), $rb_times(p, q))];
-                  $send(self.h['$[]'](i), '[]=', Opal.to_a($writer));
-                  return $writer[$rb_minus($writer["length"], 1)];;}, $$74.$$s = self, $$74.$$arity = 1, $$74));
-                return $send(low, 'upto', [high], ($$75 = function(i){var self = $$75.$$s == null ? this : $$75.$$s;
+                  $send(self.h['$[]'](i), '[]=', $to_a($writer));
+                  return $writer[$rb_minus($writer["length"], 1)];;}, {$$arity: 1, $$s: self});
+                return $send(low, 'upto', [high], function $$62(i){var self = $$62.$$s == null ? this : $$62.$$s;
                   if (self.v == null) self.v = nil;
 
                   
                   
-                  if (i == null) {
-                    i = nil;
-                  };
+                  if (i == null) i = nil;;
                   p = $rb_plus($rb_times(x, self.v['$[]'](i)['$[]'](k)), $rb_times(y, self.v['$[]'](i)['$[]']($rb_plus(k, 1))));
                   if ($truthy(notlast)) {
                     
                     p = $rb_plus(p, $rb_times(z, self.v['$[]'](i)['$[]']($rb_plus(k, 2))));
                     
                     $writer = [$rb_plus(k, 2), $rb_minus(self.v['$[]'](i)['$[]']($rb_plus(k, 2)), $rb_times(p, r))];
-                    $send(self.v['$[]'](i), '[]=', Opal.to_a($writer));
-                    $writer[$rb_minus($writer["length"], 1)];;};
+                    $send(self.v['$[]'](i), '[]=', $to_a($writer));
+                    $writer[$rb_minus($writer["length"], 1)];;
+                  };
                   
                   $writer = [k, $rb_minus(self.v['$[]'](i)['$[]'](k), p)];
-                  $send(self.v['$[]'](i), '[]=', Opal.to_a($writer));
+                  $send(self.v['$[]'](i), '[]=', $to_a($writer));
                   $writer[$rb_minus($writer["length"], 1)];;
                   
                   $writer = [$rb_plus(k, 1), $rb_minus(self.v['$[]'](i)['$[]']($rb_plus(k, 1)), $rb_times(p, q))];
-                  $send(self.v['$[]'](i), '[]=', Opal.to_a($writer));
-                  return $writer[$rb_minus($writer["length"], 1)];;}, $$75.$$s = self, $$75.$$arity = 1, $$75));
+                  $send(self.v['$[]'](i), '[]=', $to_a($writer));
+                  return $writer[$rb_minus($writer["length"], 1)];;}, {$$arity: 1, $$s: self});
               } else {
                 return nil
-              };}, $$72.$$s = self, $$72.$$arity = 1, $$72));
+              };}, {$$arity: 1, $$s: self});
           };
         };
-        if ($truthy(norm['$=='](0.0))) {
-          return nil};
-        $send($rb_minus(nn, 1), 'downto', [0], ($$76 = function(k){var self = $$76.$$s == null ? this : $$76.$$s, $$77, $c, $d, $$80, cdivr = nil, cdivi = nil;
+        if ($eqeq(norm, 0.0)) {
+          return nil
+        };
+        $send($rb_minus(nn, 1), 'downto', [0], function $$63(k){var $c, $d, self = $$63.$$s == null ? this : $$63.$$s, cdivr = nil, cdivi = nil;
           if (self.d == null) self.d = nil;
           if (self.e == null) self.e = nil;
           if (self.h == null) self.h = nil;
 
           
           
-          if (k == null) {
-            k = nil;
-          };
+          if (k == null) k = nil;;
           p = self.d['$[]'](k);
           q = self.e['$[]'](k);
-          if ($truthy(q['$=='](0))) {
+          if ($eqeq(q, 0)) {
             
             l = k;
             
             $writer = [k, 1.0];
-            $send(self.h['$[]'](k), '[]=', Opal.to_a($writer));
+            $send(self.h['$[]'](k), '[]=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
-            return $send($rb_minus(k, 1), 'downto', [0], ($$77 = function(i){var self = $$77.$$s == null ? this : $$77.$$s, $$78, $$79, t = nil;
+            return $send($rb_minus(k, 1), 'downto', [0], function $$64(i){var self = $$64.$$s == null ? this : $$64.$$s, t = nil;
               if (self.h == null) self.h = nil;
               if (self.e == null) self.e = nil;
               if (self.d == null) self.d = nil;
 
               
               
-              if (i == null) {
-                i = nil;
-              };
+              if (i == null) i = nil;;
               w = $rb_minus(self.h['$[]'](i)['$[]'](i), p);
               r = 0.0;
-              $send(l, 'upto', [k], ($$78 = function(j){var self = $$78.$$s == null ? this : $$78.$$s;
+              $send(l, 'upto', [k], function $$65(j){var self = $$65.$$s == null ? this : $$65.$$s;
                 if (self.h == null) self.h = nil;
 
                 
                 
-                if (j == null) {
-                  j = nil;
-                };
-                return (r = $rb_plus(r, $rb_times(self.h['$[]'](i)['$[]'](j), self.h['$[]'](j)['$[]'](k))));}, $$78.$$s = self, $$78.$$arity = 1, $$78));
+                if (j == null) j = nil;;
+                return (r = $rb_plus(r, $rb_times(self.h['$[]'](i)['$[]'](j), self.h['$[]'](j)['$[]'](k))));}, {$$arity: 1, $$s: self});
               if ($truthy($rb_lt(self.e['$[]'](i), 0.0))) {
                 
                 z = w;
@@ -1612,16 +1422,16 @@ Opal.modules["matrix/eigenvalue_decomposition"] = function(Opal) {
               } else {
                 
                 l = i;
-                if ($truthy(self.e['$[]'](i)['$=='](0.0))) {
-                  if ($truthy(w['$!='](0.0))) {
+                if ($eqeq(self.e['$[]'](i), 0.0)) {
+                  if ($neqeq(w, 0.0)) {
                     
                     $writer = [k, $rb_divide(r['$-@'](), w)];
-                    $send(self.h['$[]'](i), '[]=', Opal.to_a($writer));
+                    $send(self.h['$[]'](i), '[]=', $to_a($writer));
                     $writer[$rb_minus($writer["length"], 1)];
                   } else {
                     
                     $writer = [k, $rb_divide(r['$-@'](), $rb_times(eps, norm))];
-                    $send(self.h['$[]'](i), '[]=', Opal.to_a($writer));
+                    $send(self.h['$[]'](i), '[]=', $to_a($writer));
                     $writer[$rb_minus($writer["length"], 1)];
                   }
                 } else {
@@ -1632,37 +1442,35 @@ Opal.modules["matrix/eigenvalue_decomposition"] = function(Opal) {
                   t = $rb_divide($rb_minus($rb_times(x, s), $rb_times(z, r)), q);
                   
                   $writer = [k, t];
-                  $send(self.h['$[]'](i), '[]=', Opal.to_a($writer));
+                  $send(self.h['$[]'](i), '[]=', $to_a($writer));
                   $writer[$rb_minus($writer["length"], 1)];;
                   if ($truthy($rb_gt(x.$abs(), z.$abs()))) {
                     
                     $writer = [k, $rb_divide($rb_minus(r['$-@'](), $rb_times(w, t)), x)];
-                    $send(self.h['$[]']($rb_plus(i, 1)), '[]=', Opal.to_a($writer));
+                    $send(self.h['$[]']($rb_plus(i, 1)), '[]=', $to_a($writer));
                     $writer[$rb_minus($writer["length"], 1)];
                   } else {
                     
                     $writer = [k, $rb_divide($rb_minus(s['$-@'](), $rb_times(y, t)), z)];
-                    $send(self.h['$[]']($rb_plus(i, 1)), '[]=', Opal.to_a($writer));
+                    $send(self.h['$[]']($rb_plus(i, 1)), '[]=', $to_a($writer));
                     $writer[$rb_minus($writer["length"], 1)];
                   };
                 };
                 t = self.h['$[]'](i)['$[]'](k).$abs();
                 if ($truthy($rb_gt($rb_times($rb_times(eps, t), t), 1))) {
-                  return $send(i, 'upto', [k], ($$79 = function(j){var self = $$79.$$s == null ? this : $$79.$$s;
+                  return $send(i, 'upto', [k], function $$66(j){var self = $$66.$$s == null ? this : $$66.$$s;
                     if (self.h == null) self.h = nil;
 
                     
                     
-                    if (j == null) {
-                      j = nil;
-                    };
+                    if (j == null) j = nil;;
                     $writer = [k, $rb_divide(self.h['$[]'](j)['$[]'](k), t)];
-                    $send(self.h['$[]'](j), '[]=', Opal.to_a($writer));
-                    return $writer[$rb_minus($writer["length"], 1)];}, $$79.$$s = self, $$79.$$arity = 1, $$79))
+                    $send(self.h['$[]'](j), '[]=', $to_a($writer));
+                    return $writer[$rb_minus($writer["length"], 1)];}, {$$arity: 1, $$s: self})
                 } else {
                   return nil
                 };
-              };}, $$77.$$s = self, $$77.$$arity = 1, $$77));
+              };}, {$$arity: 1, $$s: self});
           } else if ($truthy($rb_lt(q, 0))) {
             
             l = $rb_minus(n, 1);
@@ -1670,54 +1478,50 @@ Opal.modules["matrix/eigenvalue_decomposition"] = function(Opal) {
               
               
               $writer = [$rb_minus(n, 1), $rb_divide(q, self.h['$[]'](n)['$[]']($rb_minus(n, 1)))];
-              $send(self.h['$[]']($rb_minus(n, 1)), '[]=', Opal.to_a($writer));
+              $send(self.h['$[]']($rb_minus(n, 1)), '[]=', $to_a($writer));
               $writer[$rb_minus($writer["length"], 1)];;
               
               $writer = [n, $rb_divide($rb_minus(self.h['$[]'](n)['$[]'](n), p)['$-@'](), self.h['$[]'](n)['$[]']($rb_minus(n, 1)))];
-              $send(self.h['$[]']($rb_minus(n, 1)), '[]=', Opal.to_a($writer));
+              $send(self.h['$[]']($rb_minus(n, 1)), '[]=', $to_a($writer));
               $writer[$rb_minus($writer["length"], 1)];;
             } else {
               
-              $d = self.$cdiv(0.0, self.h['$[]']($rb_minus(n, 1))['$[]'](n)['$-@'](), $rb_minus(self.h['$[]']($rb_minus(n, 1))['$[]']($rb_minus(n, 1)), p), q), $c = Opal.to_ary($d), (cdivr = ($c[0] == null ? nil : $c[0])), (cdivi = ($c[1] == null ? nil : $c[1])), $d;
+              $d = self.$cdiv(0.0, self.h['$[]']($rb_minus(n, 1))['$[]'](n)['$-@'](), $rb_minus(self.h['$[]']($rb_minus(n, 1))['$[]']($rb_minus(n, 1)), p), q), $c = $to_ary($d), (cdivr = ($c[0] == null ? nil : $c[0])), (cdivi = ($c[1] == null ? nil : $c[1])), $d;
               
               $writer = [$rb_minus(n, 1), cdivr];
-              $send(self.h['$[]']($rb_minus(n, 1)), '[]=', Opal.to_a($writer));
+              $send(self.h['$[]']($rb_minus(n, 1)), '[]=', $to_a($writer));
               $writer[$rb_minus($writer["length"], 1)];;
               
               $writer = [n, cdivi];
-              $send(self.h['$[]']($rb_minus(n, 1)), '[]=', Opal.to_a($writer));
+              $send(self.h['$[]']($rb_minus(n, 1)), '[]=', $to_a($writer));
               $writer[$rb_minus($writer["length"], 1)];;
             };
             
             $writer = [$rb_minus(n, 1), 0.0];
-            $send(self.h['$[]'](n), '[]=', Opal.to_a($writer));
+            $send(self.h['$[]'](n), '[]=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
             
             $writer = [n, 1.0];
-            $send(self.h['$[]'](n), '[]=', Opal.to_a($writer));
+            $send(self.h['$[]'](n), '[]=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
-            return $send($rb_minus(n, 2), 'downto', [0], ($$80 = function(i){var self = $$80.$$s == null ? this : $$80.$$s, $$81, $e, $f, $$82, ra = nil, sa = nil, vr = nil, vi = nil, $ret_or_2 = nil, t = nil;
+            return $send($rb_minus(n, 2), 'downto', [0], function $$67(i){var $e, $f, self = $$67.$$s == null ? this : $$67.$$s, ra = nil, sa = nil, vr = nil, vi = nil, t = nil;
               if (self.h == null) self.h = nil;
               if (self.e == null) self.e = nil;
               if (self.d == null) self.d = nil;
 
               
               
-              if (i == null) {
-                i = nil;
-              };
+              if (i == null) i = nil;;
               ra = 0.0;
               sa = 0.0;
-              $send(l, 'upto', [n], ($$81 = function(j){var self = $$81.$$s == null ? this : $$81.$$s;
+              $send(l, 'upto', [n], function $$68(j){var self = $$68.$$s == null ? this : $$68.$$s;
                 if (self.h == null) self.h = nil;
 
                 
                 
-                if (j == null) {
-                  j = nil;
-                };
+                if (j == null) j = nil;;
                 ra = $rb_plus(ra, $rb_times(self.h['$[]'](i)['$[]'](j), self.h['$[]'](j)['$[]']($rb_minus(n, 1))));
-                return (sa = $rb_plus(sa, $rb_times(self.h['$[]'](i)['$[]'](j), self.h['$[]'](j)['$[]'](n))));}, $$81.$$s = self, $$81.$$arity = 1, $$81));
+                return (sa = $rb_plus(sa, $rb_times(self.h['$[]'](i)['$[]'](j), self.h['$[]'](j)['$[]'](n))));}, {$$arity: 1, $$s: self});
               w = $rb_minus(self.h['$[]'](i)['$[]'](i), p);
               if ($truthy($rb_lt(self.e['$[]'](i), 0.0))) {
                 
@@ -1727,16 +1531,16 @@ Opal.modules["matrix/eigenvalue_decomposition"] = function(Opal) {
               } else {
                 
                 l = i;
-                if ($truthy(self.e['$[]'](i)['$=='](0))) {
+                if ($eqeq(self.e['$[]'](i), 0)) {
                   
-                  $f = self.$cdiv(ra['$-@'](), sa['$-@'](), w, q), $e = Opal.to_ary($f), (cdivr = ($e[0] == null ? nil : $e[0])), (cdivi = ($e[1] == null ? nil : $e[1])), $f;
+                  $f = self.$cdiv(ra['$-@'](), sa['$-@'](), w, q), $e = $to_ary($f), (cdivr = ($e[0] == null ? nil : $e[0])), (cdivi = ($e[1] == null ? nil : $e[1])), $f;
                   
                   $writer = [$rb_minus(n, 1), cdivr];
-                  $send(self.h['$[]'](i), '[]=', Opal.to_a($writer));
+                  $send(self.h['$[]'](i), '[]=', $to_a($writer));
                   $writer[$rb_minus($writer["length"], 1)];;
                   
                   $writer = [n, cdivi];
-                  $send(self.h['$[]'](i), '[]=', Opal.to_a($writer));
+                  $send(self.h['$[]'](i), '[]=', $to_a($writer));
                   $writer[$rb_minus($writer["length"], 1)];;
                 } else {
                   
@@ -1744,154 +1548,116 @@ Opal.modules["matrix/eigenvalue_decomposition"] = function(Opal) {
                   y = self.h['$[]']($rb_plus(i, 1))['$[]'](i);
                   vr = $rb_minus($rb_plus($rb_times($rb_minus(self.d['$[]'](i), p), $rb_minus(self.d['$[]'](i), p)), $rb_times(self.e['$[]'](i), self.e['$[]'](i))), $rb_times(q, q));
                   vi = $rb_times($rb_times($rb_minus(self.d['$[]'](i), p), 2.0), q);
-                  if ($truthy((function() {if ($truthy(($ret_or_2 = vr['$=='](0.0)))) {
-                    return vi['$=='](0.0)
-                  } else {
-                    return $ret_or_2
-                  }; return nil; })())) {
-                    vr = $rb_times($rb_times(eps, norm), $rb_plus($rb_plus($rb_plus($rb_plus(w.$abs(), q.$abs()), x.$abs()), y.$abs()), z.$abs()))};
-                  $f = self.$cdiv($rb_plus($rb_minus($rb_times(x, r), $rb_times(z, ra)), $rb_times(q, sa)), $rb_minus($rb_minus($rb_times(x, s), $rb_times(z, sa)), $rb_times(q, ra)), vr, vi), $e = Opal.to_ary($f), (cdivr = ($e[0] == null ? nil : $e[0])), (cdivi = ($e[1] == null ? nil : $e[1])), $f;
+                  if (($eqeq(vr, 0.0) && ($eqeq(vi, 0.0)))) {
+                    vr = $rb_times($rb_times(eps, norm), $rb_plus($rb_plus($rb_plus($rb_plus(w.$abs(), q.$abs()), x.$abs()), y.$abs()), z.$abs()))
+                  };
+                  $f = self.$cdiv($rb_plus($rb_minus($rb_times(x, r), $rb_times(z, ra)), $rb_times(q, sa)), $rb_minus($rb_minus($rb_times(x, s), $rb_times(z, sa)), $rb_times(q, ra)), vr, vi), $e = $to_ary($f), (cdivr = ($e[0] == null ? nil : $e[0])), (cdivi = ($e[1] == null ? nil : $e[1])), $f;
                   
                   $writer = [$rb_minus(n, 1), cdivr];
-                  $send(self.h['$[]'](i), '[]=', Opal.to_a($writer));
+                  $send(self.h['$[]'](i), '[]=', $to_a($writer));
                   $writer[$rb_minus($writer["length"], 1)];;
                   
                   $writer = [n, cdivi];
-                  $send(self.h['$[]'](i), '[]=', Opal.to_a($writer));
+                  $send(self.h['$[]'](i), '[]=', $to_a($writer));
                   $writer[$rb_minus($writer["length"], 1)];;
                   if ($truthy($rb_gt(x.$abs(), $rb_plus(z.$abs(), q.$abs())))) {
                     
                     
                     $writer = [$rb_minus(n, 1), $rb_divide($rb_plus($rb_minus(ra['$-@'](), $rb_times(w, self.h['$[]'](i)['$[]']($rb_minus(n, 1)))), $rb_times(q, self.h['$[]'](i)['$[]'](n))), x)];
-                    $send(self.h['$[]']($rb_plus(i, 1)), '[]=', Opal.to_a($writer));
+                    $send(self.h['$[]']($rb_plus(i, 1)), '[]=', $to_a($writer));
                     $writer[$rb_minus($writer["length"], 1)];;
                     
                     $writer = [n, $rb_divide($rb_minus($rb_minus(sa['$-@'](), $rb_times(w, self.h['$[]'](i)['$[]'](n))), $rb_times(q, self.h['$[]'](i)['$[]']($rb_minus(n, 1)))), x)];
-                    $send(self.h['$[]']($rb_plus(i, 1)), '[]=', Opal.to_a($writer));
+                    $send(self.h['$[]']($rb_plus(i, 1)), '[]=', $to_a($writer));
                     $writer[$rb_minus($writer["length"], 1)];;
                   } else {
                     
-                    $f = self.$cdiv($rb_minus(r['$-@'](), $rb_times(y, self.h['$[]'](i)['$[]']($rb_minus(n, 1)))), $rb_minus(s['$-@'](), $rb_times(y, self.h['$[]'](i)['$[]'](n))), z, q), $e = Opal.to_ary($f), (cdivr = ($e[0] == null ? nil : $e[0])), (cdivi = ($e[1] == null ? nil : $e[1])), $f;
+                    $f = self.$cdiv($rb_minus(r['$-@'](), $rb_times(y, self.h['$[]'](i)['$[]']($rb_minus(n, 1)))), $rb_minus(s['$-@'](), $rb_times(y, self.h['$[]'](i)['$[]'](n))), z, q), $e = $to_ary($f), (cdivr = ($e[0] == null ? nil : $e[0])), (cdivi = ($e[1] == null ? nil : $e[1])), $f;
                     
                     $writer = [$rb_minus(n, 1), cdivr];
-                    $send(self.h['$[]']($rb_plus(i, 1)), '[]=', Opal.to_a($writer));
+                    $send(self.h['$[]']($rb_plus(i, 1)), '[]=', $to_a($writer));
                     $writer[$rb_minus($writer["length"], 1)];;
                     
                     $writer = [n, cdivi];
-                    $send(self.h['$[]']($rb_plus(i, 1)), '[]=', Opal.to_a($writer));
+                    $send(self.h['$[]']($rb_plus(i, 1)), '[]=', $to_a($writer));
                     $writer[$rb_minus($writer["length"], 1)];;
                   };
                 };
                 t = [self.h['$[]'](i)['$[]']($rb_minus(n, 1)).$abs(), self.h['$[]'](i)['$[]'](n).$abs()].$max();
                 if ($truthy($rb_gt($rb_times($rb_times(eps, t), t), 1))) {
-                  return $send(i, 'upto', [n], ($$82 = function(j){var self = $$82.$$s == null ? this : $$82.$$s;
+                  return $send(i, 'upto', [n], function $$69(j){var self = $$69.$$s == null ? this : $$69.$$s;
                     if (self.h == null) self.h = nil;
 
                     
                     
-                    if (j == null) {
-                      j = nil;
-                    };
+                    if (j == null) j = nil;;
                     
                     $writer = [$rb_minus(n, 1), $rb_divide(self.h['$[]'](j)['$[]']($rb_minus(n, 1)), t)];
-                    $send(self.h['$[]'](j), '[]=', Opal.to_a($writer));
+                    $send(self.h['$[]'](j), '[]=', $to_a($writer));
                     $writer[$rb_minus($writer["length"], 1)];;
                     
                     $writer = [n, $rb_divide(self.h['$[]'](j)['$[]'](n), t)];
-                    $send(self.h['$[]'](j), '[]=', Opal.to_a($writer));
-                    return $writer[$rb_minus($writer["length"], 1)];;}, $$82.$$s = self, $$82.$$arity = 1, $$82))
+                    $send(self.h['$[]'](j), '[]=', $to_a($writer));
+                    return $writer[$rb_minus($writer["length"], 1)];;}, {$$arity: 1, $$s: self})
                 } else {
                   return nil
                 };
-              };}, $$80.$$s = self, $$80.$$arity = 1, $$80));
+              };}, {$$arity: 1, $$s: self});
           } else {
             return nil
-          };}, $$76.$$s = self, $$76.$$arity = 1, $$76));
-        $send(nn, 'times', [], ($$83 = function(i){var self = $$83.$$s == null ? this : $$83.$$s, $$84, $ret_or_3 = nil;
+          };}, {$$arity: 1, $$s: self});
+        $send(nn, 'times', [], function $$70(i){var self = $$70.$$s == null ? this : $$70.$$s;
 
           
           
-          if (i == null) {
-            i = nil;
-          };
-          if ($truthy((function() {if ($truthy(($ret_or_3 = $rb_lt(i, low)))) {
-            return $ret_or_3
-          } else {
-            return $rb_gt(i, high)
-          }; return nil; })())) {
-            return $send(i, 'upto', [$rb_minus(nn, 1)], ($$84 = function(j){var self = $$84.$$s == null ? this : $$84.$$s;
+          if (i == null) i = nil;;
+          if (($truthy($rb_lt(i, low)) || ($truthy($rb_gt(i, high))))) {
+            return $send(i, 'upto', [$rb_minus(nn, 1)], function $$71(j){var self = $$71.$$s == null ? this : $$71.$$s;
               if (self.h == null) self.h = nil;
               if (self.v == null) self.v = nil;
 
               
               
-              if (j == null) {
-                j = nil;
-              };
+              if (j == null) j = nil;;
               $writer = [j, self.h['$[]'](i)['$[]'](j)];
-              $send(self.v['$[]'](i), '[]=', Opal.to_a($writer));
-              return $writer[$rb_minus($writer["length"], 1)];}, $$84.$$s = self, $$84.$$arity = 1, $$84))
+              $send(self.v['$[]'](i), '[]=', $to_a($writer));
+              return $writer[$rb_minus($writer["length"], 1)];}, {$$arity: 1, $$s: self})
           } else {
             return nil
-          };}, $$83.$$s = self, $$83.$$arity = 1, $$83));
-        return $send($rb_minus(nn, 1), 'downto', [low], ($$85 = function(j){var self = $$85.$$s == null ? this : $$85.$$s, $$86;
+          };}, {$$arity: 1, $$s: self});
+        return $send($rb_minus(nn, 1), 'downto', [low], function $$72(j){var self = $$72.$$s == null ? this : $$72.$$s;
 
           
           
-          if (j == null) {
-            j = nil;
-          };
-          return $send(low, 'upto', [high], ($$86 = function(i){var self = $$86.$$s == null ? this : $$86.$$s, $$87;
+          if (j == null) j = nil;;
+          return $send(low, 'upto', [high], function $$73(i){var self = $$73.$$s == null ? this : $$73.$$s;
             if (self.v == null) self.v = nil;
 
             
             
-            if (i == null) {
-              i = nil;
-            };
+            if (i == null) i = nil;;
             z = 0.0;
-            $send(low, 'upto', [[j, high].$min()], ($$87 = function(k){var self = $$87.$$s == null ? this : $$87.$$s;
+            $send(low, 'upto', [[j, high].$min()], function $$74(k){var self = $$74.$$s == null ? this : $$74.$$s;
               if (self.v == null) self.v = nil;
               if (self.h == null) self.h = nil;
 
               
               
-              if (k == null) {
-                k = nil;
-              };
-              return (z = $rb_plus(z, $rb_times(self.v['$[]'](i)['$[]'](k), self.h['$[]'](k)['$[]'](j))));}, $$87.$$s = self, $$87.$$arity = 1, $$87));
+              if (k == null) k = nil;;
+              return (z = $rb_plus(z, $rb_times(self.v['$[]'](i)['$[]'](k), self.h['$[]'](k)['$[]'](j))));}, {$$arity: 1, $$s: self});
             
             $writer = [j, z];
-            $send(self.v['$[]'](i), '[]=', Opal.to_a($writer));
-            return $writer[$rb_minus($writer["length"], 1)];;}, $$86.$$s = self, $$86.$$arity = 1, $$86));}, $$85.$$s = self, $$85.$$arity = 1, $$85));
-      }, $EigenvalueDecomposition_hessenberg_to_real_schur$63.$$arity = 0), nil) && 'hessenberg_to_real_schur';
+            $send(self.v['$[]'](i), '[]=', $to_a($writer));
+            return $writer[$rb_minus($writer["length"], 1)];;}, {$$arity: 1, $$s: self});}, {$$arity: 1, $$s: self});
+      }, 0);
     })($nesting[0], null, $nesting)
   })($nesting[0], null, $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["matrix/lup_decomposition"] = function(Opal) {
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_le(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs <= rhs : lhs['$<='](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_times(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs * rhs : lhs['$*'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy;
-
-  Opal.add_stubs(['$include', '$build', '$min', '$>', '$[]', '$==', '$<=', '$new', '$each_with_index', '$[]=', '$-', '$send', '$l', '$u', '$p', '$alias_method', '$attr_reader', '$times', '$!=', '$Raise', '$*', '$singular?', '$is_a?', '$row_count', '$column_count', '$map', '$to_a', '$row', '$upto', '$+', '$downto', '$quo', '$convert_to_array', '$size', '$values_at', '$elements', '$raise', '$class', '$abs', '$-@', '$<']);
+Opal.modules["matrix/lup_decomposition"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy, $rb_gt = Opal.rb_gt, $eqeq = Opal.eqeq, $def = Opal.def, $rb_le = Opal.rb_le, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $neqeq = Opal.neqeq, $rb_times = Opal.rb_times, $rb_plus = Opal.rb_plus, $rb_lt = Opal.rb_lt;
+
+  Opal.add_stubs('include,build,min,>,[],==,<=,new,each_with_index,[]=,-,send,l,u,p,alias_method,attr_reader,times,!=,Raise,*,singular?,is_a?,row_count,column_count,map,to_a,row,upto,+,downto,quo,convert_to_array,size,values_at,elements,raise,class,abs,-@,<');
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Matrix');
 
@@ -1900,296 +1666,256 @@ Opal.modules["matrix/lup_decomposition"] = function(Opal) {
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'LUPDecomposition');
 
-      var $nesting = [self].concat($parent_nesting), $LUPDecomposition_l$1, $LUPDecomposition_u$3, $LUPDecomposition_p$5, $LUPDecomposition_to_ary$8, $LUPDecomposition_singular$ques$9, $LUPDecomposition_det$11, $LUPDecomposition_solve$13, $LUPDecomposition_initialize$26;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.row_count = self.$$prototype.column_count = self.$$prototype.pivots = self.$$prototype.pivot_sign = nil;
+      $proto.row_count = $proto.column_count = $proto.pivots = $proto.pivot_sign = nil;
       
-      self.$include($$$($$($nesting, 'Matrix'), 'ConversionHelper'));
+      self.$include($$$($$('Matrix'), 'ConversionHelper'));
       
-      Opal.def(self, '$l', $LUPDecomposition_l$1 = function $$l() {
-        var $$2, self = this;
+      $def(self, '$l', function $$l() {
+        var self = this;
 
-        return $send($$($nesting, 'Matrix'), 'build', [self.row_count, [self.column_count, self.row_count].$min()], ($$2 = function(i, j){var self = $$2.$$s == null ? this : $$2.$$s;
+        return $send($$('Matrix'), 'build', [self.row_count, [self.column_count, self.row_count].$min()], function $$1(i, j){var self = $$1.$$s == null ? this : $$1.$$s;
           if (self.lu == null) self.lu = nil;
 
           
           
-          if (i == null) {
-            i = nil;
-          };
+          if (i == null) i = nil;;
           
-          if (j == null) {
-            j = nil;
-          };
+          if (j == null) j = nil;;
           if ($truthy($rb_gt(i, j))) {
             return self.lu['$[]'](i)['$[]'](j)
-          } else if ($truthy(i['$=='](j))) {
+          } else if ($eqeq(i, j)) {
             return 1
           } else {
             return 0
-          };}, $$2.$$s = self, $$2.$$arity = 2, $$2))
-      }, $LUPDecomposition_l$1.$$arity = 0);
+          };}, {$$arity: 2, $$s: self})
+      }, 0);
       
-      Opal.def(self, '$u', $LUPDecomposition_u$3 = function $$u() {
-        var $$4, self = this;
+      $def(self, '$u', function $$u() {
+        var self = this;
 
-        return $send($$($nesting, 'Matrix'), 'build', [[self.column_count, self.row_count].$min(), self.column_count], ($$4 = function(i, j){var self = $$4.$$s == null ? this : $$4.$$s;
+        return $send($$('Matrix'), 'build', [[self.column_count, self.row_count].$min(), self.column_count], function $$2(i, j){var self = $$2.$$s == null ? this : $$2.$$s;
           if (self.lu == null) self.lu = nil;
 
           
           
-          if (i == null) {
-            i = nil;
-          };
+          if (i == null) i = nil;;
           
-          if (j == null) {
-            j = nil;
-          };
+          if (j == null) j = nil;;
           if ($truthy($rb_le(i, j))) {
             return self.lu['$[]'](i)['$[]'](j)
           } else {
             return 0
-          };}, $$4.$$s = self, $$4.$$arity = 2, $$4))
-      }, $LUPDecomposition_u$3.$$arity = 0);
+          };}, {$$arity: 2, $$s: self})
+      }, 0);
       
-      Opal.def(self, '$p', $LUPDecomposition_p$5 = function $$p() {
-        var $$6, $$7, self = this, rows = nil;
+      $def(self, '$p', function $$p() {
+        var self = this, rows = nil;
 
         
-        rows = $send($$($nesting, 'Array'), 'new', [self.row_count], ($$6 = function(){var self = $$6.$$s == null ? this : $$6.$$s;
+        rows = $send($$('Array'), 'new', [self.row_count], function $$3(){var self = $$3.$$s == null ? this : $$3.$$s;
           if (self.row_count == null) self.row_count = nil;
 
-          return $$($nesting, 'Array').$new(self.row_count, 0)}, $$6.$$s = self, $$6.$$arity = 0, $$6));
-        $send(self.pivots, 'each_with_index', [], ($$7 = function(p, i){var self = $$7.$$s == null ? this : $$7.$$s, $writer = nil;
+          return $$('Array').$new(self.row_count, 0)}, {$$arity: 0, $$s: self});
+        $send(self.pivots, 'each_with_index', [], function $$4(p, i){var $writer = nil;
 
           
           
-          if (p == null) {
-            p = nil;
-          };
+          if (p == null) p = nil;;
           
-          if (i == null) {
-            i = nil;
-          };
+          if (i == null) i = nil;;
           $writer = [p, 1];
-          $send(rows['$[]'](i), '[]=', Opal.to_a($writer));
-          return $writer[$rb_minus($writer["length"], 1)];}, $$7.$$s = self, $$7.$$arity = 2, $$7));
-        return $$($nesting, 'Matrix').$send("new", rows, self.row_count);
-      }, $LUPDecomposition_p$5.$$arity = 0);
+          $send(rows['$[]'](i), '[]=', $to_a($writer));
+          return $writer[$rb_minus($writer["length"], 1)];}, 2);
+        return $$('Matrix').$send("new", rows, self.row_count);
+      }, 0);
       
-      Opal.def(self, '$to_ary', $LUPDecomposition_to_ary$8 = function $$to_ary() {
+      $def(self, '$to_ary', function $$to_ary() {
         var self = this;
 
         return [self.$l(), self.$u(), self.$p()]
-      }, $LUPDecomposition_to_ary$8.$$arity = 0);
+      }, 0);
       self.$alias_method("to_a", "to_ary");
       self.$attr_reader("pivots");
       
-      Opal.def(self, '$singular?', $LUPDecomposition_singular$ques$9 = function() {try {
+      $def(self, '$singular?', function $LUPDecomposition_singular$ques$5() {try {
 
-        var $$10, self = this;
+        var self = this;
 
         
-        $send(self.column_count, 'times', [], ($$10 = function(j){var self = $$10.$$s == null ? this : $$10.$$s;
+        $send(self.column_count, 'times', [], function $$6(j){var self = $$6.$$s == null ? this : $$6.$$s;
           if (self.lu == null) self.lu = nil;
 
           
           
-          if (j == null) {
-            j = nil;
-          };
-          if ($truthy(self.lu['$[]'](j)['$[]'](j)['$=='](0))) {
+          if (j == null) j = nil;;
+          if ($eqeq(self.lu['$[]'](j)['$[]'](j), 0)) {
             Opal.ret(true)
           } else {
             return nil
-          };}, $$10.$$s = self, $$10.$$arity = 1, $$10));
+          };}, {$$arity: 1, $$s: self});
         return false;
         } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
-      }, $LUPDecomposition_singular$ques$9.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$det', $LUPDecomposition_det$11 = function $$det() {
-        var $$12, self = this, d = nil;
+      $def(self, '$det', function $$det() {
+        var self = this, d = nil;
 
         
-        if ($truthy(self.row_count['$!='](self.column_count))) {
-          $$($nesting, 'Matrix').$Raise($$$($$($nesting, 'Matrix'), 'ErrDimensionMismatch'))};
+        if ($neqeq(self.row_count, self.column_count)) {
+          $$('Matrix').$Raise($$$($$('Matrix'), 'ErrDimensionMismatch'))
+        };
         d = self.pivot_sign;
-        $send(self.column_count, 'times', [], ($$12 = function(j){var self = $$12.$$s == null ? this : $$12.$$s;
+        $send(self.column_count, 'times', [], function $$7(j){var self = $$7.$$s == null ? this : $$7.$$s;
           if (self.lu == null) self.lu = nil;
 
           
           
-          if (j == null) {
-            j = nil;
-          };
-          return (d = $rb_times(d, self.lu['$[]'](j)['$[]'](j)));}, $$12.$$s = self, $$12.$$arity = 1, $$12));
+          if (j == null) j = nil;;
+          return (d = $rb_times(d, self.lu['$[]'](j)['$[]'](j)));}, {$$arity: 1, $$s: self});
         return d;
-      }, $LUPDecomposition_det$11.$$arity = 0);
+      }, 0);
       self.$alias_method("determinant", "det");
       
-      Opal.def(self, '$solve', $LUPDecomposition_solve$13 = function $$solve(b) {
-        var $$14, $$15, $$18, $$22, $$24, self = this, nx = nil, m = nil;
+      $def(self, '$solve', function $$solve(b) {
+        var self = this, nx = nil, m = nil;
 
         
         if ($truthy(self['$singular?']())) {
-          $$($nesting, 'Matrix').$Raise($$$($$($nesting, 'Matrix'), 'ErrNotRegular'), "Matrix is singular.")};
-        if ($truthy(b['$is_a?']($$($nesting, 'Matrix')))) {
+          $$('Matrix').$Raise($$$($$('Matrix'), 'ErrNotRegular'), "Matrix is singular.")
+        };
+        if ($truthy(b['$is_a?']($$('Matrix')))) {
           
-          if ($truthy(b.$row_count()['$!='](self.row_count))) {
-            $$($nesting, 'Matrix').$Raise($$$($$($nesting, 'Matrix'), 'ErrDimensionMismatch'))};
+          if ($neqeq(b.$row_count(), self.row_count)) {
+            $$('Matrix').$Raise($$$($$('Matrix'), 'ErrDimensionMismatch'))
+          };
           nx = b.$column_count();
-          m = $send(self.pivots, 'map', [], ($$14 = function(row){var self = $$14.$$s == null ? this : $$14.$$s;
-
+          m = $send(self.pivots, 'map', [], function $$8(row){
             
             
-            if (row == null) {
-              row = nil;
-            };
-            return b.$row(row).$to_a();}, $$14.$$s = self, $$14.$$arity = 1, $$14));
-          $send(self.column_count, 'times', [], ($$15 = function(k){var self = $$15.$$s == null ? this : $$15.$$s, $$16;
+            if (row == null) row = nil;;
+            return b.$row(row).$to_a();}, 1);
+          $send(self.column_count, 'times', [], function $$9(k){var self = $$9.$$s == null ? this : $$9.$$s;
             if (self.column_count == null) self.column_count = nil;
 
             
             
-            if (k == null) {
-              k = nil;
-            };
-            return $send($rb_plus(k, 1), 'upto', [$rb_minus(self.column_count, 1)], ($$16 = function(i){var self = $$16.$$s == null ? this : $$16.$$s, $$17;
+            if (k == null) k = nil;;
+            return $send($rb_plus(k, 1), 'upto', [$rb_minus(self.column_count, 1)], function $$10(i){var self = $$10.$$s == null ? this : $$10.$$s;
 
               
               
-              if (i == null) {
-                i = nil;
-              };
-              return $send(nx, 'times', [], ($$17 = function(j){var self = $$17.$$s == null ? this : $$17.$$s, $binary_op_recvr_tmp_10 = nil, $writer = nil;
+              if (i == null) i = nil;;
+              return $send(nx, 'times', [], function $$11(j){var self = $$11.$$s == null ? this : $$11.$$s, $binary_op_recvr_tmp_10 = nil, $writer = nil;
                 if (self.lu == null) self.lu = nil;
 
                 
                 
-                if (j == null) {
-                  j = nil;
-                };
+                if (j == null) j = nil;;
                 $binary_op_recvr_tmp_10 = m['$[]'](i);
                 
                 $writer = [j, $rb_minus($binary_op_recvr_tmp_10['$[]'](j), $rb_times(m['$[]'](k)['$[]'](j), self.lu['$[]'](i)['$[]'](k)))];
-                $send($binary_op_recvr_tmp_10, '[]=', Opal.to_a($writer));
-                return $writer[$rb_minus($writer["length"], 1)];;}, $$17.$$s = self, $$17.$$arity = 1, $$17));}, $$16.$$s = self, $$16.$$arity = 1, $$16));}, $$15.$$s = self, $$15.$$arity = 1, $$15));
-          $send($rb_minus(self.column_count, 1), 'downto', [0], ($$18 = function(k){var self = $$18.$$s == null ? this : $$18.$$s, $$19, $$20;
+                $send($binary_op_recvr_tmp_10, '[]=', $to_a($writer));
+                return $writer[$rb_minus($writer["length"], 1)];;}, {$$arity: 1, $$s: self});}, {$$arity: 1, $$s: self});}, {$$arity: 1, $$s: self});
+          $send($rb_minus(self.column_count, 1), 'downto', [0], function $$12(k){var self = $$12.$$s == null ? this : $$12.$$s;
 
             
             
-            if (k == null) {
-              k = nil;
-            };
-            $send(nx, 'times', [], ($$19 = function(j){var self = $$19.$$s == null ? this : $$19.$$s, $writer = nil;
+            if (k == null) k = nil;;
+            $send(nx, 'times', [], function $$13(j){var self = $$13.$$s == null ? this : $$13.$$s, $writer = nil;
               if (self.lu == null) self.lu = nil;
 
               
               
-              if (j == null) {
-                j = nil;
-              };
+              if (j == null) j = nil;;
               $writer = [j, m['$[]'](k)['$[]'](j).$quo(self.lu['$[]'](k)['$[]'](k))];
-              $send(m['$[]'](k), '[]=', Opal.to_a($writer));
-              return $writer[$rb_minus($writer["length"], 1)];}, $$19.$$s = self, $$19.$$arity = 1, $$19));
-            return $send(k, 'times', [], ($$20 = function(i){var self = $$20.$$s == null ? this : $$20.$$s, $$21;
+              $send(m['$[]'](k), '[]=', $to_a($writer));
+              return $writer[$rb_minus($writer["length"], 1)];}, {$$arity: 1, $$s: self});
+            return $send(k, 'times', [], function $$14(i){var self = $$14.$$s == null ? this : $$14.$$s;
 
               
               
-              if (i == null) {
-                i = nil;
-              };
-              return $send(nx, 'times', [], ($$21 = function(j){var self = $$21.$$s == null ? this : $$21.$$s, $binary_op_recvr_tmp_11 = nil, $writer = nil;
+              if (i == null) i = nil;;
+              return $send(nx, 'times', [], function $$15(j){var self = $$15.$$s == null ? this : $$15.$$s, $binary_op_recvr_tmp_11 = nil, $writer = nil;
                 if (self.lu == null) self.lu = nil;
 
                 
                 
-                if (j == null) {
-                  j = nil;
-                };
+                if (j == null) j = nil;;
                 $binary_op_recvr_tmp_11 = m['$[]'](i);
                 
                 $writer = [j, $rb_minus($binary_op_recvr_tmp_11['$[]'](j), $rb_times(m['$[]'](k)['$[]'](j), self.lu['$[]'](i)['$[]'](k)))];
-                $send($binary_op_recvr_tmp_11, '[]=', Opal.to_a($writer));
-                return $writer[$rb_minus($writer["length"], 1)];;}, $$21.$$s = self, $$21.$$arity = 1, $$21));}, $$20.$$s = self, $$20.$$arity = 1, $$20));}, $$18.$$s = self, $$18.$$arity = 1, $$18));
-          return $$($nesting, 'Matrix').$send("new", m, nx);
+                $send($binary_op_recvr_tmp_11, '[]=', $to_a($writer));
+                return $writer[$rb_minus($writer["length"], 1)];;}, {$$arity: 1, $$s: self});}, {$$arity: 1, $$s: self});}, {$$arity: 1, $$s: self});
+          return $$('Matrix').$send("new", m, nx);
         } else {
           
           b = self.$convert_to_array(b);
-          if ($truthy(b.$size()['$!='](self.row_count))) {
-            $$($nesting, 'Matrix').$Raise($$$($$($nesting, 'Matrix'), 'ErrDimensionMismatch'))};
-          m = $send(b, 'values_at', Opal.to_a(self.pivots));
-          $send(self.column_count, 'times', [], ($$22 = function(k){var self = $$22.$$s == null ? this : $$22.$$s, $$23;
+          if ($neqeq(b.$size(), self.row_count)) {
+            $$('Matrix').$Raise($$$($$('Matrix'), 'ErrDimensionMismatch'))
+          };
+          m = $send(b, 'values_at', $to_a(self.pivots));
+          $send(self.column_count, 'times', [], function $$16(k){var self = $$16.$$s == null ? this : $$16.$$s;
             if (self.column_count == null) self.column_count = nil;
 
             
             
-            if (k == null) {
-              k = nil;
-            };
-            return $send($rb_plus(k, 1), 'upto', [$rb_minus(self.column_count, 1)], ($$23 = function(i){var self = $$23.$$s == null ? this : $$23.$$s, $writer = nil;
+            if (k == null) k = nil;;
+            return $send($rb_plus(k, 1), 'upto', [$rb_minus(self.column_count, 1)], function $$17(i){var self = $$17.$$s == null ? this : $$17.$$s, $writer = nil;
               if (self.lu == null) self.lu = nil;
 
               
               
-              if (i == null) {
-                i = nil;
-              };
+              if (i == null) i = nil;;
               $writer = [i, $rb_minus(m['$[]'](i), $rb_times(m['$[]'](k), self.lu['$[]'](i)['$[]'](k)))];
-              $send(m, '[]=', Opal.to_a($writer));
-              return $writer[$rb_minus($writer["length"], 1)];}, $$23.$$s = self, $$23.$$arity = 1, $$23));}, $$22.$$s = self, $$22.$$arity = 1, $$22));
-          $send($rb_minus(self.column_count, 1), 'downto', [0], ($$24 = function(k){var self = $$24.$$s == null ? this : $$24.$$s, $$25, $writer = nil;
+              $send(m, '[]=', $to_a($writer));
+              return $writer[$rb_minus($writer["length"], 1)];}, {$$arity: 1, $$s: self});}, {$$arity: 1, $$s: self});
+          $send($rb_minus(self.column_count, 1), 'downto', [0], function $$18(k){var self = $$18.$$s == null ? this : $$18.$$s, $writer = nil;
             if (self.lu == null) self.lu = nil;
 
             
             
-            if (k == null) {
-              k = nil;
-            };
+            if (k == null) k = nil;;
             
             $writer = [k, m['$[]'](k).$quo(self.lu['$[]'](k)['$[]'](k))];
-            $send(m, '[]=', Opal.to_a($writer));
+            $send(m, '[]=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
-            return $send(k, 'times', [], ($$25 = function(i){var self = $$25.$$s == null ? this : $$25.$$s;
+            return $send(k, 'times', [], function $$19(i){var self = $$19.$$s == null ? this : $$19.$$s;
               if (self.lu == null) self.lu = nil;
 
               
               
-              if (i == null) {
-                i = nil;
-              };
+              if (i == null) i = nil;;
               $writer = [i, $rb_minus(m['$[]'](i), $rb_times(m['$[]'](k), self.lu['$[]'](i)['$[]'](k)))];
-              $send(m, '[]=', Opal.to_a($writer));
-              return $writer[$rb_minus($writer["length"], 1)];}, $$25.$$s = self, $$25.$$arity = 1, $$25));}, $$24.$$s = self, $$24.$$arity = 1, $$24));
-          return $$($nesting, 'Vector').$elements(m, false);
+              $send(m, '[]=', $to_a($writer));
+              return $writer[$rb_minus($writer["length"], 1)];}, {$$arity: 1, $$s: self});}, {$$arity: 1, $$s: self});
+          return $$('Vector').$elements(m, false);
         };
-      }, $LUPDecomposition_solve$13.$$arity = 1);
-      return (Opal.def(self, '$initialize', $LUPDecomposition_initialize$26 = function $$initialize(a) {
-        var $$27, $$28, self = this, lu_col_j = nil;
+      }, 1);
+      return $def(self, '$initialize', function $$initialize(a) {
+        var self = this, lu_col_j = nil;
 
         
-        if ($truthy(a['$is_a?']($$($nesting, 'Matrix')))) {
-        } else {
-          self.$raise($$($nesting, 'TypeError'), "" + "Expected Matrix but got " + (a.$class()))
+        if (!$truthy(a['$is_a?']($$('Matrix')))) {
+          self.$raise($$('TypeError'), "Expected Matrix but got " + (a.$class()))
         };
         self.lu = a.$to_a();
         self.row_count = a.$row_count();
         self.column_count = a.$column_count();
-        self.pivots = $$($nesting, 'Array').$new(self.row_count);
-        $send(self.row_count, 'times', [], ($$27 = function(i){var self = $$27.$$s == null ? this : $$27.$$s, $writer = nil;
+        self.pivots = $$('Array').$new(self.row_count);
+        $send(self.row_count, 'times', [], function $$20(i){var self = $$20.$$s == null ? this : $$20.$$s, $writer = nil;
           if (self.pivots == null) self.pivots = nil;
 
           
           
-          if (i == null) {
-            i = nil;
-          };
+          if (i == null) i = nil;;
           $writer = [i, i];
-          $send(self.pivots, '[]=', Opal.to_a($writer));
-          return $writer[$rb_minus($writer["length"], 1)];}, $$27.$$s = self, $$27.$$arity = 1, $$27));
+          $send(self.pivots, '[]=', $to_a($writer));
+          return $writer[$rb_minus($writer["length"], 1)];}, {$$arity: 1, $$s: self});
         self.pivot_sign = 1;
-        lu_col_j = $$($nesting, 'Array').$new(self.row_count);
-        return $send(self.column_count, 'times', [], ($$28 = function(j){var self = $$28.$$s == null ? this : $$28.$$s, $$29, $$30, $$32, $$33, $$34, p = nil, k = nil, $writer = nil, $ret_or_1 = nil;
+        lu_col_j = $$('Array').$new(self.row_count);
+        return $send(self.column_count, 'times', [], function $$21(j){var self = $$21.$$s == null ? this : $$21.$$s, p = nil, k = nil, $writer = nil;
           if (self.row_count == null) self.row_count = nil;
           if (self.column_count == null) self.column_count = nil;
           if (self.pivots == null) self.pivots = nil;
@@ -2198,149 +1924,105 @@ Opal.modules["matrix/lup_decomposition"] = function(Opal) {
 
           
           
-          if (j == null) {
-            j = nil;
-          };
-          $send(self.row_count, 'times', [], ($$29 = function(i){var self = $$29.$$s == null ? this : $$29.$$s, $writer = nil;
+          if (j == null) j = nil;;
+          $send(self.row_count, 'times', [], function $$22(i){var self = $$22.$$s == null ? this : $$22.$$s, $writer = nil;
             if (self.lu == null) self.lu = nil;
 
             
             
-            if (i == null) {
-              i = nil;
-            };
+            if (i == null) i = nil;;
             $writer = [i, self.lu['$[]'](i)['$[]'](j)];
-            $send(lu_col_j, '[]=', Opal.to_a($writer));
-            return $writer[$rb_minus($writer["length"], 1)];}, $$29.$$s = self, $$29.$$arity = 1, $$29));
-          $send(self.row_count, 'times', [], ($$30 = function(i){var self = $$30.$$s == null ? this : $$30.$$s, $$31, lu_row_i = nil, kmax = nil, s = nil, $writer = nil;
+            $send(lu_col_j, '[]=', $to_a($writer));
+            return $writer[$rb_minus($writer["length"], 1)];}, {$$arity: 1, $$s: self});
+          $send(self.row_count, 'times', [], function $$23(i){var self = $$23.$$s == null ? this : $$23.$$s, lu_row_i = nil, kmax = nil, s = nil, $writer = nil;
             if (self.lu == null) self.lu = nil;
 
             
             
-            if (i == null) {
-              i = nil;
-            };
+            if (i == null) i = nil;;
             lu_row_i = self.lu['$[]'](i);
             kmax = [i, j].$min();
             s = 0;
-            $send(kmax, 'times', [], ($$31 = function(k){var self = $$31.$$s == null ? this : $$31.$$s;
-
+            $send(kmax, 'times', [], function $$24(k){
               
               
-              if (k == null) {
-                k = nil;
-              };
-              return (s = $rb_plus(s, $rb_times(lu_row_i['$[]'](k), lu_col_j['$[]'](k))));}, $$31.$$s = self, $$31.$$arity = 1, $$31));
+              if (k == null) k = nil;;
+              return (s = $rb_plus(s, $rb_times(lu_row_i['$[]'](k), lu_col_j['$[]'](k))));}, 1);
             
-            $writer = [j, (($writer = [i, $rb_minus(lu_col_j['$[]'](i), s)]), $send(lu_col_j, '[]=', Opal.to_a($writer)), $writer[$rb_minus($writer["length"], 1)])];
-            $send(lu_row_i, '[]=', Opal.to_a($writer));
-            return $writer[$rb_minus($writer["length"], 1)];;}, $$30.$$s = self, $$30.$$arity = 1, $$30));
+            $writer = [j, (($writer = [i, $rb_minus(lu_col_j['$[]'](i), s)]), $send(lu_col_j, '[]=', $to_a($writer)), $writer[$rb_minus($writer["length"], 1)])];
+            $send(lu_row_i, '[]=', $to_a($writer));
+            return $writer[$rb_minus($writer["length"], 1)];;}, {$$arity: 1, $$s: self});
           p = j;
-          $send($rb_plus(j, 1), 'upto', [$rb_minus(self.row_count, 1)], ($$32 = function(i){var self = $$32.$$s == null ? this : $$32.$$s;
-
+          $send($rb_plus(j, 1), 'upto', [$rb_minus(self.row_count, 1)], function $$25(i){
             
             
-            if (i == null) {
-              i = nil;
-            };
+            if (i == null) i = nil;;
             if ($truthy($rb_gt(lu_col_j['$[]'](i).$abs(), lu_col_j['$[]'](p).$abs()))) {
               return (p = i)
             } else {
               return nil
-            };}, $$32.$$s = self, $$32.$$arity = 1, $$32));
-          if ($truthy(p['$!='](j))) {
+            };}, 1);
+          if ($neqeq(p, j)) {
             
-            $send(self.column_count, 'times', [], ($$33 = function(k){var self = $$33.$$s == null ? this : $$33.$$s, t = nil, $writer = nil;
+            $send(self.column_count, 'times', [], function $$26(k){var self = $$26.$$s == null ? this : $$26.$$s, t = nil, $writer = nil;
               if (self.lu == null) self.lu = nil;
 
               
               
-              if (k == null) {
-                k = nil;
-              };
+              if (k == null) k = nil;;
               t = self.lu['$[]'](p)['$[]'](k);
               
               $writer = [k, self.lu['$[]'](j)['$[]'](k)];
-              $send(self.lu['$[]'](p), '[]=', Opal.to_a($writer));
+              $send(self.lu['$[]'](p), '[]=', $to_a($writer));
               $writer[$rb_minus($writer["length"], 1)];;
               
               $writer = [k, t];
-              $send(self.lu['$[]'](j), '[]=', Opal.to_a($writer));
-              return $writer[$rb_minus($writer["length"], 1)];;}, $$33.$$s = self, $$33.$$arity = 1, $$33));
+              $send(self.lu['$[]'](j), '[]=', $to_a($writer));
+              return $writer[$rb_minus($writer["length"], 1)];;}, {$$arity: 1, $$s: self});
             k = self.pivots['$[]'](p);
             
             $writer = [p, self.pivots['$[]'](j)];
-            $send(self.pivots, '[]=', Opal.to_a($writer));
+            $send(self.pivots, '[]=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
             
             $writer = [j, k];
-            $send(self.pivots, '[]=', Opal.to_a($writer));
+            $send(self.pivots, '[]=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
-            self.pivot_sign = self.pivot_sign['$-@']();};
-          if ($truthy((function() {if ($truthy(($ret_or_1 = $rb_lt(j, self.row_count)))) {
-            return self.lu['$[]'](j)['$[]'](j)['$!='](0)
-          } else {
-            return $ret_or_1
-          }; return nil; })())) {
-            return $send($rb_plus(j, 1), 'upto', [$rb_minus(self.row_count, 1)], ($$34 = function(i){var self = $$34.$$s == null ? this : $$34.$$s;
+            self.pivot_sign = self.pivot_sign['$-@']();
+          };
+          if (($truthy($rb_lt(j, self.row_count)) && ($neqeq(self.lu['$[]'](j)['$[]'](j), 0)))) {
+            return $send($rb_plus(j, 1), 'upto', [$rb_minus(self.row_count, 1)], function $$27(i){var self = $$27.$$s == null ? this : $$27.$$s;
               if (self.lu == null) self.lu = nil;
 
               
               
-              if (i == null) {
-                i = nil;
-              };
+              if (i == null) i = nil;;
               $writer = [j, self.lu['$[]'](i)['$[]'](j).$quo(self.lu['$[]'](j)['$[]'](j))];
-              $send(self.lu['$[]'](i), '[]=', Opal.to_a($writer));
-              return $writer[$rb_minus($writer["length"], 1)];}, $$34.$$s = self, $$34.$$arity = 1, $$34))
+              $send(self.lu['$[]'](i), '[]=', $to_a($writer));
+              return $writer[$rb_minus($writer["length"], 1)];}, {$$arity: 1, $$s: self})
           } else {
             return nil
-          };}, $$28.$$s = self, $$28.$$arity = 1, $$28));
-      }, $LUPDecomposition_initialize$26.$$arity = 1), nil) && 'initialize';
+          };}, {$$arity: 1, $$s: self});
+      }, 1);
     })($nesting[0], null, $nesting)
   })($nesting[0], null, $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["matrix"] = function(Opal) {
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_times(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs * rhs : lhs['$*'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_ge(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs >= rhs : lhs['$>='](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_le(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs <= rhs : lhs['$<='](rhs);
-  }
-  function $rb_divide(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs / rhs : lhs['$/'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy, $alias = Opal.alias, $hash2 = Opal.hash2;
-
-  Opal.add_stubs(['$require', '$extend', '$def_e2message', '$def_exception', '$include', '$autoload', '$private_class_method', '$attr_reader', '$protected', '$rows', '$convert_to_array', '$map!', '$size', '$[]', '$each', '$==', '$raise', '$new', '$transpose', '$coerce_to_int', '$<', '$to_enum', '$empty', '$[]=', '$-', '$diagonal', '$scalar', '$!=', '$*', '$coerce_to_matrix', '$map', '$send', '$to_proc', '$column_count', '$concat', '$row_count', '$each_with_index', '$+', '$empty?', '$method', '$first', '$Raise', '$combine', '$class', '$private', '$fetch', '$alias_method', '$elements', '$>=', '$-@', '$times', '$collect', '$new_matrix', '$===', '$upto', '$min', '$inspect', '$freeze', '$>', '$include?', '$last', '$pop', '$end', '$exclude_end?', '$<=', '$to_a', '$delete_at', '$square?', '$determinant', '$first_minor', '$**', '$build', '$cofactor', '$!', '$inject', '$with_index', '$all?', '$conj', '$singular?', '$eql?', '$hash', '$column_vector', '$column', '$apply_through_coercion', '$/', '$inverse', '$I', '$abs', '$quo', '$identity', '$loop', '$zero?', '$>>', '$eigensystem', '$+@', '$determinant_bareiss', '$find', '$warn', '$hstack', '$rank', '$round', '$vstack', '$real', '$imag', '$row', '$join', '$to_s', '$dup', '$to_ary', '$message', '$is_a?', '$coerce', '$length', '$public_send', '$kind_of?', '$respond_to?', '$__send__', '$coerce_to', '$count', '$independent?', '$collect2', '$each2', '$basis', '$laplace_expansion', '$sqrt', '$abs2', '$magnitude', '$acos', '$inner_product', '$row_vector']);
+Opal.modules["matrix"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $defs = Opal.defs, $send = Opal.send, $truthy = Opal.truthy, $eqeq = Opal.eqeq, $rb_lt = Opal.rb_lt, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $alias = Opal.alias, $neqeq = Opal.neqeq, $rb_times = Opal.rb_times, $rb_plus = Opal.rb_plus, $def = Opal.def, $rb_ge = Opal.rb_ge, $eqeqeq = Opal.eqeqeq, $const_set = Opal.const_set, $hash2 = Opal.hash2, $rb_gt = Opal.rb_gt, $to_ary = Opal.to_ary, $rb_le = Opal.rb_le, $not = Opal.not, $rb_divide = Opal.rb_divide;
+
+  Opal.add_stubs('require,extend,def_e2message,def_exception,include,autoload,private_class_method,attr_reader,protected,rows,convert_to_array,map!,size,[],each,==,raise,new,transpose,coerce_to_int,<,to_enum,empty,[]=,-,diagonal,scalar,!=,*,coerce_to_matrix,map,send,to_proc,column_count,concat,row_count,each_with_index,+,empty?,method,first,Raise,combine,class,private,fetch,alias_method,elements,-@,>=,times,collect,new_matrix,===,upto,min,inspect,freeze,>,include?,last,pop,end,exclude_end?,<=,to_a,delete_at,square?,determinant,first_minor,**,build,cofactor,!,inject,with_index,all?,conj,singular?,eql?,hash,column_vector,column,apply_through_coercion,/,inverse,I,abs,quo,identity,loop,zero?,>>,eigensystem,+@,determinant_bareiss,find,warn,hstack,rank,round,vstack,real,imag,row,join,to_s,dup,to_ary,message,is_a?,coerce,length,public_send,kind_of?,respond_to?,__send__,coerce_to,count,independent?,collect2,each2,basis,laplace_expansion,sqrt,abs2,magnitude,acos,inner_product,row_vector');
   
   self.$require("e2mmap.rb");
   (function($base, $parent_nesting) {
     var self = $module($base, 'ExceptionForMatrix');
 
-    var $nesting = [self].concat($parent_nesting);
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
-    self.$extend($$($nesting, 'Exception2MessageMapper'));
-    self.$def_e2message($$($nesting, 'TypeError'), "wrong argument type %s (expected %s)");
-    self.$def_e2message($$($nesting, 'ArgumentError'), "Wrong # of arguments(%d for %d)");
+    self.$extend($$('Exception2MessageMapper'));
+    self.$def_e2message($$('TypeError'), "wrong argument type %s (expected %s)");
+    self.$def_e2message($$('ArgumentError'), "Wrong # of arguments(%d for %d)");
     self.$def_exception("ErrDimensionMismatch", "\#{self.name} dimension mismatch");
     self.$def_exception("ErrNotRegular", "Not Regular Matrix");
     self.$def_exception("ErrOperationNotDefined", "Operation(%s) can\\'t be defined: %s op %s");
@@ -2349,1003 +2031,780 @@ Opal.modules["matrix"] = function(Opal) {
   (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Matrix');
 
-    var $nesting = [self].concat($parent_nesting), $Matrix_$$$1, $Matrix_rows$2, $Matrix_columns$5, $Matrix_build$6, $Matrix_diagonal$9, $Matrix_scalar$11, $Matrix_identity$12, $Matrix_zero$13, $Matrix_row_vector$15, $Matrix_column_vector$16, $Matrix_empty$17, $Matrix_vstack$18, $Matrix_hstack$20, $Matrix_combine$23, $Matrix_combine$28, $Matrix_initialize$29, $Matrix_new_matrix$30, $Matrix_$$$31, $Matrix_$$$eq$33, $Matrix_row_count$34, $Matrix_row$35, $Matrix_column$38, $Matrix_collect$41, $Matrix_each$43, $Matrix_each_with_index$57, $Matrix_index$72, $Matrix_minor$75, $Matrix_first_minor$77, $Matrix_cofactor$79, $Matrix_adjugate$80, $Matrix_laplace_expansion$82, $Matrix_diagonal$ques$84, $Matrix_empty$ques$85, $Matrix_hermitian$ques$86, $Matrix_lower_triangular$ques$88, $Matrix_normal$ques$89, $Matrix_orthogonal$ques$93, $Matrix_permutation$ques$97, $Matrix_real$ques$100, $Matrix_regular$ques$101, $Matrix_singular$ques$102, $Matrix_square$ques$103, $Matrix_symmetric$ques$104, $Matrix_antisymmetric$ques$106, $Matrix_unitary$ques$108, $Matrix_upper_triangular$ques$112, $Matrix_zero$ques$113, $Matrix_$eq_eq$114, $Matrix_eql$ques$115, $Matrix_clone$116, $Matrix_hash$117, $Matrix_$$118, $Matrix_$plus$124, $Matrix_$minus$127, $Matrix_$slash$130, $Matrix_hadamard_product$133, $Matrix_inverse$135, $Matrix_inverse_from$136, $Matrix_$$$144, $Matrix_$plus$$147, $Matrix_$minus$$148, $Matrix_determinant$150, $Matrix_determinant_bareiss$151, $Matrix_determinant_e$157, $Matrix_hstack$158, $Matrix_rank$159, $Matrix_rank_e$164, $Matrix_round$165, $Matrix_trace$167, $Matrix_transpose$169, $Matrix_vstack$170, $Matrix_eigensystem$171, $Matrix_lup$172, $Matrix_conjugate$173, $Matrix_imaginary$174, $Matrix_real$175, $Matrix_rect$176, $Matrix_coerce$177, $Matrix_row_vectors$178, $Matrix_column_vectors$180, $Matrix_to_matrix$182, $Matrix_to_a$183, $Matrix_elements_to_f$184, $Matrix_elements_to_i$185, $Matrix_elements_to_r$186, $Matrix_to_s$187, $Matrix_inspect$190;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-    self.$$prototype.rows = nil;
+    $proto.rows = nil;
     
-    self.$include($$($nesting, 'Enumerable'));
-    self.$include($$($nesting, 'ExceptionForMatrix'));
+    self.$include($$('Enumerable'));
+    self.$include($$('ExceptionForMatrix'));
     self.$autoload("EigenvalueDecomposition", "matrix/eigenvalue_decomposition");
     self.$autoload("LUPDecomposition", "matrix/lup_decomposition");
     self.$private_class_method("new");
     self.$attr_reader("rows");
     self.$protected("rows");
-    Opal.defs($$($nesting, 'Matrix'), '$[]', $Matrix_$$$1 = function($a) {
+    $defs($$('Matrix'), '$[]', function $Matrix_$$$1($a) {
       var $post_args, rows, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       rows = $post_args;;
       return self.$rows(rows, false);
-    }, $Matrix_$$$1.$$arity = -1);
-    Opal.defs($$($nesting, 'Matrix'), '$rows', $Matrix_rows$2 = function $$rows(rows, copy) {
-      var $$3, $$4, self = this, size = nil, $ret_or_1 = nil;
+    }, -1);
+    $defs($$('Matrix'), '$rows', function $$rows(rows, copy) {
+      var self = this, size = nil, $ret_or_1 = nil;
 
       
       
-      if (copy == null) {
-        copy = true;
-      };
+      if (copy == null) copy = true;;
       rows = self.$convert_to_array(rows, copy);
-      $send(rows, 'map!', [], ($$3 = function(row){var self = $$3.$$s == null ? this : $$3.$$s;
+      $send(rows, 'map!', [], function $$2(row){var self = $$2.$$s == null ? this : $$2.$$s;
 
         
         
-        if (row == null) {
-          row = nil;
-        };
-        return self.$convert_to_array(row, copy);}, $$3.$$s = self, $$3.$$arity = 1, $$3));
-      size = (function() {if ($truthy(($ret_or_1 = rows['$[]'](0)))) {
-        return $ret_or_1
-      } else {
-        return []
-      }; return nil; })().$size();
-      $send(rows, 'each', [], ($$4 = function(row){var self = $$4.$$s == null ? this : $$4.$$s;
+        if (row == null) row = nil;;
+        return self.$convert_to_array(row, copy);}, {$$arity: 1, $$s: self});
+      size = ($truthy(($ret_or_1 = rows['$[]'](0))) ? ($ret_or_1) : ([])).$size();
+      $send(rows, 'each', [], function $$3(row){var self = $$3.$$s == null ? this : $$3.$$s;
 
         
         
-        if (row == null) {
-          row = nil;
-        };
-        if (row.$size()['$=='](size)) {
+        if (row == null) row = nil;;
+        if ($eqeq(row.$size(), size)) {
           return nil
         } else {
-          return self.$raise($$($nesting, 'ErrDimensionMismatch'), "" + "row size differs (" + (row.$size()) + " should be " + (size) + ")")
-        };}, $$4.$$s = self, $$4.$$arity = 1, $$4));
+          return self.$raise($$('ErrDimensionMismatch'), "row size differs (" + (row.$size()) + " should be " + (size) + ")")
+        };}, {$$arity: 1, $$s: self});
       return self.$new(rows, size);
-    }, $Matrix_rows$2.$$arity = -2);
-    Opal.defs($$($nesting, 'Matrix'), '$columns', $Matrix_columns$5 = function $$columns(columns) {
+    }, -2);
+    $defs($$('Matrix'), '$columns', function $$columns(columns) {
       var self = this;
 
       return self.$rows(columns, false).$transpose()
-    }, $Matrix_columns$5.$$arity = 1);
-    Opal.defs($$($nesting, 'Matrix'), '$build', $Matrix_build$6 = function $$build(row_count, column_count) {
-      var $$7, $iter = $Matrix_build$6.$$p, $yield = $iter || nil, self = this, $ret_or_2 = nil, rows = nil;
+    }, 1);
+    $defs($$('Matrix'), '$build', function $$build(row_count, column_count) {
+      var $yield = $$build.$$p || nil, self = this, rows = nil;
 
-      if ($iter) $Matrix_build$6.$$p = null;
+      delete $$build.$$p;
       
       
-      if (column_count == null) {
-        column_count = row_count;
+      if (column_count == null) column_count = row_count;;
+      row_count = $$('CoercionHelper').$coerce_to_int(row_count);
+      column_count = $$('CoercionHelper').$coerce_to_int(column_count);
+      if (($truthy($rb_lt(row_count, 0)) || ($truthy($rb_lt(column_count, 0))))) {
+        self.$raise($$('ArgumentError'))
       };
-      row_count = $$($nesting, 'CoercionHelper').$coerce_to_int(row_count);
-      column_count = $$($nesting, 'CoercionHelper').$coerce_to_int(column_count);
-      if ($truthy((function() {if ($truthy(($ret_or_2 = $rb_lt(row_count, 0)))) {
-        return $ret_or_2
-      } else {
-        return $rb_lt(column_count, 0)
-      }; return nil; })())) {
-        self.$raise($$($nesting, 'ArgumentError'))};
-      if (($yield !== nil)) {
-      } else {
+      if (!($yield !== nil)) {
         return self.$to_enum("build", row_count, column_count)
       };
-      rows = $send($$($nesting, 'Array'), 'new', [row_count], ($$7 = function(i){var self = $$7.$$s == null ? this : $$7.$$s, $$8;
-
+      rows = $send($$('Array'), 'new', [row_count], function $$4(i){
         
         
-        if (i == null) {
-          i = nil;
-        };
-        return $send($$($nesting, 'Array'), 'new', [column_count], ($$8 = function(j){var self = $$8.$$s == null ? this : $$8.$$s;
-
+        if (i == null) i = nil;;
+        return $send($$('Array'), 'new', [column_count], function $$5(j){
           
           
-          if (j == null) {
-            j = nil;
-          };
-          return Opal.yieldX($yield, [i, j]);;}, $$8.$$s = self, $$8.$$arity = 1, $$8));}, $$7.$$s = self, $$7.$$arity = 1, $$7));
+          if (j == null) j = nil;;
+          return Opal.yieldX($yield, [i, j]);;}, 1);}, 1);
       return self.$new(rows, column_count);
-    }, $Matrix_build$6.$$arity = -2);
-    Opal.defs($$($nesting, 'Matrix'), '$diagonal', $Matrix_diagonal$9 = function $$diagonal($a) {
-      var $post_args, values, $$10, self = this, size = nil, rows = nil;
+    }, -2);
+    $defs($$('Matrix'), '$diagonal', function $$diagonal($a) {
+      var $post_args, values, self = this, size = nil, rows = nil;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       values = $post_args;;
       size = values.$size();
-      if (size['$=='](0)) {
-        return $$($nesting, 'Matrix').$empty()};
-      rows = $send($$($nesting, 'Array'), 'new', [size], ($$10 = function(j){var self = $$10.$$s == null ? this : $$10.$$s, row = nil, $writer = nil;
+      if ($eqeq(size, 0)) {
+        return $$('Matrix').$empty()
+      };
+      rows = $send($$('Array'), 'new', [size], function $$6(j){var row = nil, $writer = nil;
 
         
         
-        if (j == null) {
-          j = nil;
-        };
-        row = $$($nesting, 'Array').$new(size, 0);
+        if (j == null) j = nil;;
+        row = $$('Array').$new(size, 0);
         
         $writer = [j, values['$[]'](j)];
-        $send(row, '[]=', Opal.to_a($writer));
+        $send(row, '[]=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
-        return row;}, $$10.$$s = self, $$10.$$arity = 1, $$10));
+        return row;}, 1);
       return self.$new(rows);
-    }, $Matrix_diagonal$9.$$arity = -1);
-    Opal.defs($$($nesting, 'Matrix'), '$scalar', $Matrix_scalar$11 = function $$scalar(n, value) {
+    }, -1);
+    $defs($$('Matrix'), '$scalar', function $$scalar(n, value) {
       var self = this;
 
-      return $send(self, 'diagonal', Opal.to_a($$($nesting, 'Array').$new(n, value)))
-    }, $Matrix_scalar$11.$$arity = 2);
-    Opal.defs($$($nesting, 'Matrix'), '$identity', $Matrix_identity$12 = function $$identity(n) {
+      return $send(self, 'diagonal', $to_a($$('Array').$new(n, value)))
+    }, 2);
+    $defs($$('Matrix'), '$identity', function $$identity(n) {
       var self = this;
 
       return self.$scalar(n, 1)
-    }, $Matrix_identity$12.$$arity = 1);
+    }, 1);
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       
       $alias(self, "unit", "identity");
       return $alias(self, "I", "identity");
-    })(Opal.get_singleton_class($$($nesting, 'Matrix')), $nesting);
-    Opal.defs($$($nesting, 'Matrix'), '$zero', $Matrix_zero$13 = function $$zero(row_count, column_count) {
-      var $$14, self = this, rows = nil;
+    })(Opal.get_singleton_class($$('Matrix')), $nesting);
+    $defs($$('Matrix'), '$zero', function $$zero(row_count, column_count) {
+      var self = this, rows = nil;
 
       
       
-      if (column_count == null) {
-        column_count = row_count;
-      };
-      rows = $send($$($nesting, 'Array'), 'new', [row_count], ($$14 = function(){var self = $$14.$$s == null ? this : $$14.$$s;
-
-        return $$($nesting, 'Array').$new(column_count, 0)}, $$14.$$s = self, $$14.$$arity = 0, $$14));
+      if (column_count == null) column_count = row_count;;
+      rows = $send($$('Array'), 'new', [row_count], function $$7(){
+        return $$('Array').$new(column_count, 0)}, 0);
       return self.$new(rows, column_count);
-    }, $Matrix_zero$13.$$arity = -2);
-    Opal.defs($$($nesting, 'Matrix'), '$row_vector', $Matrix_row_vector$15 = function $$row_vector(row) {
+    }, -2);
+    $defs($$('Matrix'), '$row_vector', function $$row_vector(row) {
       var self = this;
 
       
       row = self.$convert_to_array(row);
       return self.$new([row]);
-    }, $Matrix_row_vector$15.$$arity = 1);
-    Opal.defs($$($nesting, 'Matrix'), '$column_vector', $Matrix_column_vector$16 = function $$column_vector(column) {
+    }, 1);
+    $defs($$('Matrix'), '$column_vector', function $$column_vector(column) {
       var self = this;
 
       
       column = self.$convert_to_array(column);
       return self.$new([column].$transpose(), 1);
-    }, $Matrix_column_vector$16.$$arity = 1);
-    Opal.defs($$($nesting, 'Matrix'), '$empty', $Matrix_empty$17 = function $$empty(row_count, column_count) {
-      var self = this, $ret_or_3 = nil, $ret_or_4 = nil;
+    }, 1);
+    $defs($$('Matrix'), '$empty', function $$empty(row_count, column_count) {
+      var self = this;
 
       
       
-      if (row_count == null) {
-        row_count = 0;
-      };
+      if (row_count == null) row_count = 0;;
       
-      if (column_count == null) {
-        column_count = 0;
+      if (column_count == null) column_count = 0;;
+      if (($neqeq(column_count, 0) && ($neqeq(row_count, 0)))) {
+        self.$raise($$('ArgumentError'), "One size must be 0")
+      };
+      if (($truthy($rb_lt(column_count, 0)) || ($truthy($rb_lt(row_count, 0))))) {
+        self.$raise($$('ArgumentError'), "Negative size")
       };
-      if ($truthy((function() {if ($truthy(($ret_or_3 = column_count['$!='](0)))) {
-        return row_count['$!='](0)
-      } else {
-        return $ret_or_3
-      }; return nil; })())) {
-        self.$raise($$($nesting, 'ArgumentError'), "One size must be 0")};
-      if ($truthy((function() {if ($truthy(($ret_or_4 = $rb_lt(column_count, 0)))) {
-        return $ret_or_4
-      } else {
-        return $rb_lt(row_count, 0)
-      }; return nil; })())) {
-        self.$raise($$($nesting, 'ArgumentError'), "Negative size")};
       return self.$new($rb_times([[]], row_count), column_count);
-    }, $Matrix_empty$17.$$arity = -1);
-    Opal.defs($$($nesting, 'Matrix'), '$vstack', $Matrix_vstack$18 = function $$vstack(x, $a) {
-      var $post_args, matrices, $$19, self = this, result = nil;
+    }, -1);
+    $defs($$('Matrix'), '$vstack', function $$vstack(x, $a) {
+      var $post_args, matrices, self = this, result = nil;
 
       
       
-      $post_args = Opal.slice.call(arguments, 1, arguments.length);
+      $post_args = Opal.slice.call(arguments, 1);
       
       matrices = $post_args;;
-      x = $$($nesting, 'CoercionHelper').$coerce_to_matrix(x);
+      x = $$('CoercionHelper').$coerce_to_matrix(x);
       result = $send(x.$send("rows"), 'map', [], "dup".$to_proc());
-      $send(matrices, 'each', [], ($$19 = function(m){var self = $$19.$$s == null ? this : $$19.$$s;
+      $send(matrices, 'each', [], function $$8(m){var self = $$8.$$s == null ? this : $$8.$$s;
 
         
         
-        if (m == null) {
-          m = nil;
+        if (m == null) m = nil;;
+        m = $$('CoercionHelper').$coerce_to_matrix(m);
+        if ($neqeq(m.$column_count(), x.$column_count())) {
+          self.$raise($$('ErrDimensionMismatch'), "The given matrices must have " + (x.$column_count()) + " columns, but one has " + (m.$column_count()))
         };
-        m = $$($nesting, 'CoercionHelper').$coerce_to_matrix(m);
-        if ($truthy(m.$column_count()['$!='](x.$column_count()))) {
-          self.$raise($$($nesting, 'ErrDimensionMismatch'), "" + "The given matrices must have " + (x.$column_count()) + " columns, but one has " + (m.$column_count()))};
-        return result.$concat(m.$send("rows"));}, $$19.$$s = self, $$19.$$arity = 1, $$19));
+        return result.$concat(m.$send("rows"));}, {$$arity: 1, $$s: self});
       return self.$new(result, x.$column_count());
-    }, $Matrix_vstack$18.$$arity = -2);
-    Opal.defs($$($nesting, 'Matrix'), '$hstack', $Matrix_hstack$20 = function $$hstack(x, $a) {
-      var $post_args, matrices, $$21, self = this, result = nil, total_column_count = nil;
+    }, -2);
+    $defs($$('Matrix'), '$hstack', function $$hstack(x, $a) {
+      var $post_args, matrices, self = this, result = nil, total_column_count = nil;
 
       
       
-      $post_args = Opal.slice.call(arguments, 1, arguments.length);
+      $post_args = Opal.slice.call(arguments, 1);
       
       matrices = $post_args;;
-      x = $$($nesting, 'CoercionHelper').$coerce_to_matrix(x);
+      x = $$('CoercionHelper').$coerce_to_matrix(x);
       result = $send(x.$send("rows"), 'map', [], "dup".$to_proc());
       total_column_count = x.$column_count();
-      $send(matrices, 'each', [], ($$21 = function(m){var self = $$21.$$s == null ? this : $$21.$$s, $$22;
+      $send(matrices, 'each', [], function $$9(m){var self = $$9.$$s == null ? this : $$9.$$s;
 
         
         
-        if (m == null) {
-          m = nil;
+        if (m == null) m = nil;;
+        m = $$('CoercionHelper').$coerce_to_matrix(m);
+        if ($neqeq(m.$row_count(), x.$row_count())) {
+          self.$raise($$('ErrDimensionMismatch'), "The given matrices must have " + (x.$row_count()) + " rows, but one has " + (m.$row_count()))
         };
-        m = $$($nesting, 'CoercionHelper').$coerce_to_matrix(m);
-        if ($truthy(m.$row_count()['$!='](x.$row_count()))) {
-          self.$raise($$($nesting, 'ErrDimensionMismatch'), "" + "The given matrices must have " + (x.$row_count()) + " rows, but one has " + (m.$row_count()))};
-        $send(result, 'each_with_index', [], ($$22 = function(row, i){var self = $$22.$$s == null ? this : $$22.$$s;
-
+        $send(result, 'each_with_index', [], function $$10(row, i){
           
           
-          if (row == null) {
-            row = nil;
-          };
+          if (row == null) row = nil;;
           
-          if (i == null) {
-            i = nil;
-          };
-          return row.$concat(m.$send("rows")['$[]'](i));}, $$22.$$s = self, $$22.$$arity = 2, $$22));
-        return (total_column_count = $rb_plus(total_column_count, m.$column_count()));}, $$21.$$s = self, $$21.$$arity = 1, $$21));
+          if (i == null) i = nil;;
+          return row.$concat(m.$send("rows")['$[]'](i));}, 2);
+        return (total_column_count = $rb_plus(total_column_count, m.$column_count()));}, {$$arity: 1, $$s: self});
       return self.$new(result, total_column_count);
-    }, $Matrix_hstack$20.$$arity = -2);
-    Opal.defs($$($nesting, 'Matrix'), '$combine', $Matrix_combine$23 = function $$combine($a) {
-      var $post_args, matrices, $$24, $$25, $iter = $Matrix_combine$23.$$p, $yield = $iter || nil, self = this, x = nil, rows = nil;
+    }, -2);
+    $defs($$('Matrix'), '$combine', function $$combine($a) {
+      var $post_args, matrices, $yield = $$combine.$$p || nil, self = this, x = nil, rows = nil;
 
-      if ($iter) $Matrix_combine$23.$$p = null;
+      delete $$combine.$$p;
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       matrices = $post_args;;
-      if (($yield !== nil)) {
-      } else {
-        return $send(self, 'to_enum', ["combine"].concat(Opal.to_a(matrices)))
+      if (!($yield !== nil)) {
+        return $send(self, 'to_enum', ["combine"].concat($to_a(matrices)))
       };
       if ($truthy(matrices['$empty?']())) {
-        return $$($nesting, 'Matrix').$empty()};
-      $send(matrices, 'map!', [], $$($nesting, 'CoercionHelper').$method("coerce_to_matrix").$to_proc());
+        return $$('Matrix').$empty()
+      };
+      $send(matrices, 'map!', [], $$('CoercionHelper').$method("coerce_to_matrix").$to_proc());
       x = matrices.$first();
-      $send(matrices, 'each', [], ($$24 = function(m){var self = $$24.$$s == null ? this : $$24.$$s, $ret_or_5 = nil;
-
+      $send(matrices, 'each', [], function $$11(m){
         
         
-        if (m == null) {
-          m = nil;
-        };
-        if ($truthy((function() {if ($truthy(($ret_or_5 = x.$row_count()['$=='](m.$row_count())))) {
-          return x.$column_count()['$=='](m.$column_count())
-        } else {
-          return $ret_or_5
-        }; return nil; })())) {
+        if (m == null) m = nil;;
+        if (($eqeq(x.$row_count(), m.$row_count()) && ($eqeq(x.$column_count(), m.$column_count())))) {
           return nil
         } else {
-          return $$($nesting, 'Matrix').$Raise($$($nesting, 'ErrDimensionMismatch'))
-        };}, $$24.$$s = self, $$24.$$arity = 1, $$24));
-      rows = $send($$($nesting, 'Array'), 'new', [x.$row_count()], ($$25 = function(i){var self = $$25.$$s == null ? this : $$25.$$s, $$26;
-
+          return $$('Matrix').$Raise($$('ErrDimensionMismatch'))
+        };}, 1);
+      rows = $send($$('Array'), 'new', [x.$row_count()], function $$12(i){
         
         
-        if (i == null) {
-          i = nil;
-        };
-        return $send($$($nesting, 'Array'), 'new', [x.$column_count()], ($$26 = function(j){var self = $$26.$$s == null ? this : $$26.$$s, $$27;
-
+        if (i == null) i = nil;;
+        return $send($$('Array'), 'new', [x.$column_count()], function $$13(j){
           
           
-          if (j == null) {
-            j = nil;
-          };
-          return Opal.yield1($yield, $send(matrices, 'map', [], ($$27 = function(m){var self = $$27.$$s == null ? this : $$27.$$s;
-
+          if (j == null) j = nil;;
+          return Opal.yield1($yield, $send(matrices, 'map', [], function $$14(m){
             
             
-            if (m == null) {
-              m = nil;
-            };
-            return m['$[]'](i, j);}, $$27.$$s = self, $$27.$$arity = 1, $$27)));;}, $$26.$$s = self, $$26.$$arity = 1, $$26));}, $$25.$$s = self, $$25.$$arity = 1, $$25));
+            if (m == null) m = nil;;
+            return m['$[]'](i, j);}, 1));;}, 1);}, 1);
       return self.$new(rows, x.$column_count());
-    }, $Matrix_combine$23.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$combine', $Matrix_combine$28 = function $$combine($a) {
-      var $iter = $Matrix_combine$28.$$p, block = $iter || nil, $post_args, matrices, self = this;
+    $def(self, '$combine', function $$combine($a) {
+      var block = $$combine.$$p || nil, $post_args, matrices, self = this;
 
-      if ($iter) $Matrix_combine$28.$$p = null;
-      
+      delete $$combine.$$p;
       
-      if ($iter) $Matrix_combine$28.$$p = null;;
+      ;
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       matrices = $post_args;;
-      return $send($$($nesting, 'Matrix'), 'combine', [self].concat(Opal.to_a(matrices)), block.$to_proc());
-    }, $Matrix_combine$28.$$arity = -1);
+      return $send($$('Matrix'), 'combine', [self].concat($to_a(matrices)), block.$to_proc());
+    }, -1);
     
-    Opal.def(self, '$initialize', $Matrix_initialize$29 = function $$initialize(rows, column_count) {
+    $def(self, '$initialize', function $$initialize(rows, column_count) {
       var self = this;
 
       
       
-      if (column_count == null) {
-        column_count = rows['$[]'](0).$size();
-      };
+      if (column_count == null) column_count = rows['$[]'](0).$size();;
       self.rows = rows;
       return (self.column_count = column_count);
-    }, $Matrix_initialize$29.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$new_matrix', $Matrix_new_matrix$30 = function $$new_matrix(rows, column_count) {
+    $def(self, '$new_matrix', function $$new_matrix(rows, column_count) {
       var self = this;
 
       
       
-      if (column_count == null) {
-        column_count = rows['$[]'](0).$size();
-      };
+      if (column_count == null) column_count = rows['$[]'](0).$size();;
       return self.$class().$send("new", rows, column_count);
-    }, $Matrix_new_matrix$30.$$arity = -2);
+    }, -2);
     self.$private("new_matrix");
     
-    Opal.def(self, '$[]', $Matrix_$$$31 = function(i, j) {try {
+    $def(self, '$[]', function $Matrix_$$$15(i, j) {try {
 
-      var $$32, self = this;
-
-      return $send(self.rows, 'fetch', [i], ($$32 = function(){var self = $$32.$$s == null ? this : $$32.$$s;
+      var self = this;
 
-        Opal.ret(nil)}, $$32.$$s = self, $$32.$$arity = 0, $$32))['$[]'](j)
+      return $send(self.rows, 'fetch', [i], function $$16(){
+        Opal.ret(nil)}, 0)['$[]'](j)
       } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
-    }, $Matrix_$$$31.$$arity = 2);
+    }, 2);
     $alias(self, "element", "[]");
     $alias(self, "component", "[]");
     
-    Opal.def(self, '$[]=', $Matrix_$$$eq$33 = function(i, j, v) {
+    $def(self, '$[]=', function $Matrix_$$$eq$17(i, j, v) {
       var self = this, $writer = nil;
 
       
       $writer = [j, v];
-      $send(self.rows['$[]'](i), '[]=', Opal.to_a($writer));
+      $send(self.rows['$[]'](i), '[]=', $to_a($writer));
       return $writer[$rb_minus($writer["length"], 1)];
-    }, $Matrix_$$$eq$33.$$arity = 3);
+    }, 3);
     $alias(self, "set_element", "[]=");
     $alias(self, "set_component", "[]=");
     self.$private("[]=", "set_element", "set_component");
     
-    Opal.def(self, '$row_count', $Matrix_row_count$34 = function $$row_count() {
+    $def(self, '$row_count', function $$row_count() {
       var self = this;
 
       return self.rows.$size()
-    }, $Matrix_row_count$34.$$arity = 0);
+    }, 0);
     self.$alias_method("row_size", "row_count");
     self.$attr_reader("column_count");
     self.$alias_method("column_size", "column_count");
     
-    Opal.def(self, '$row', $Matrix_row$35 = function $$row(i) {try {
+    $def(self, '$row', function $$row(i) {try {
 
-      var $iter = $Matrix_row$35.$$p, block = $iter || nil, $$36, $$37, self = this;
+      var block = $$row.$$p || nil, self = this;
 
-      if ($iter) $Matrix_row$35.$$p = null;
+      delete $$row.$$p;
       
-      
-      if ($iter) $Matrix_row$35.$$p = null;;
+      ;
       if ((block !== nil)) {
         
-        $send($send(self.rows, 'fetch', [i], ($$36 = function(){var self = $$36.$$s == null ? this : $$36.$$s;
+        $send($send(self.rows, 'fetch', [i], function $$18(){var self = $$18.$$s == null ? this : $$18.$$s;
 
-          Opal.ret(self)}, $$36.$$s = self, $$36.$$arity = 0, $$36)), 'each', [], block.$to_proc());
+          Opal.ret(self)}, {$$arity: 0, $$s: self}), 'each', [], block.$to_proc());
         return self;
       } else {
-        return $$($nesting, 'Vector').$elements($send(self.rows, 'fetch', [i], ($$37 = function(){var self = $$37.$$s == null ? this : $$37.$$s;
-
-          Opal.ret(nil)}, $$37.$$s = self, $$37.$$arity = 0, $$37)))
+        return $$('Vector').$elements($send(self.rows, 'fetch', [i], function $$19(){
+          Opal.ret(nil)}, 0))
       };
       } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
-    }, $Matrix_row$35.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$column', $Matrix_column$38 = function $$column(j) {
-      var $$39, $$40, $iter = $Matrix_column$38.$$p, $yield = $iter || nil, self = this, $ret_or_6 = nil, $ret_or_7 = nil, col = nil;
+    $def(self, '$column', function $$column(j) {
+      var $yield = $$column.$$p || nil, self = this, col = nil;
 
-      if ($iter) $Matrix_column$38.$$p = null;
+      delete $$column.$$p;
       if (($yield !== nil)) {
         
-        if ($truthy((function() {if ($truthy(($ret_or_6 = $rb_ge(j, self.$column_count())))) {
-          return $ret_or_6
-        } else {
-          return $rb_lt(j, self.$column_count()['$-@']())
-        }; return nil; })())) {
-          return self};
-        $send(self.$row_count(), 'times', [], ($$39 = function(i){var self = $$39.$$s == null ? this : $$39.$$s;
+        if (($truthy($rb_ge(j, self.$column_count())) || ($truthy($rb_lt(j, self.$column_count()['$-@']()))))) {
+          return self
+        };
+        $send(self.$row_count(), 'times', [], function $$20(i){var self = $$20.$$s == null ? this : $$20.$$s;
           if (self.rows == null) self.rows = nil;
 
           
           
-          if (i == null) {
-            i = nil;
-          };
-          return Opal.yield1($yield, self.rows['$[]'](i)['$[]'](j));;}, $$39.$$s = self, $$39.$$arity = 1, $$39));
+          if (i == null) i = nil;;
+          return Opal.yield1($yield, self.rows['$[]'](i)['$[]'](j));;}, {$$arity: 1, $$s: self});
         return self;
       } else {
         
-        if ($truthy((function() {if ($truthy(($ret_or_7 = $rb_ge(j, self.$column_count())))) {
-          return $ret_or_7
-        } else {
-          return $rb_lt(j, self.$column_count()['$-@']())
-        }; return nil; })())) {
-          return nil};
-        col = $send($$($nesting, 'Array'), 'new', [self.$row_count()], ($$40 = function(i){var self = $$40.$$s == null ? this : $$40.$$s;
+        if (($truthy($rb_ge(j, self.$column_count())) || ($truthy($rb_lt(j, self.$column_count()['$-@']()))))) {
+          return nil
+        };
+        col = $send($$('Array'), 'new', [self.$row_count()], function $$21(i){var self = $$21.$$s == null ? this : $$21.$$s;
           if (self.rows == null) self.rows = nil;
 
           
           
-          if (i == null) {
-            i = nil;
-          };
-          return self.rows['$[]'](i)['$[]'](j);}, $$40.$$s = self, $$40.$$arity = 1, $$40));
-        return $$($nesting, 'Vector').$elements(col, false);
+          if (i == null) i = nil;;
+          return self.rows['$[]'](i)['$[]'](j);}, {$$arity: 1, $$s: self});
+        return $$('Vector').$elements(col, false);
       }
-    }, $Matrix_column$38.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$collect', $Matrix_collect$41 = function $$collect() {
-      var $iter = $Matrix_collect$41.$$p, block = $iter || nil, $$42, self = this, rows = nil;
+    $def(self, '$collect', function $$collect() {
+      var block = $$collect.$$p || nil, self = this, rows = nil;
 
-      if ($iter) $Matrix_collect$41.$$p = null;
-      
+      delete $$collect.$$p;
       
-      if ($iter) $Matrix_collect$41.$$p = null;;
-      if ((block !== nil)) {
-      } else {
+      ;
+      if (!(block !== nil)) {
         return self.$to_enum("collect")
       };
-      rows = $send(self.rows, 'collect', [], ($$42 = function(row){var self = $$42.$$s == null ? this : $$42.$$s;
-
+      rows = $send(self.rows, 'collect', [], function $$22(row){
         
         
-        if (row == null) {
-          row = nil;
-        };
-        return $send(row, 'collect', [], block.$to_proc());}, $$42.$$s = self, $$42.$$arity = 1, $$42));
+        if (row == null) row = nil;;
+        return $send(row, 'collect', [], block.$to_proc());}, 1);
       return self.$new_matrix(rows, self.$column_count());
-    }, $Matrix_collect$41.$$arity = 0);
+    }, 0);
     $alias(self, "map", "collect");
     
-    Opal.def(self, '$each', $Matrix_each$43 = function $$each(which) {try {
+    $def(self, '$each', function $$each(which) {try {
 
-      var $$44, $$45, $$47, $$49, $$51, $$53, $$55, $iter = $Matrix_each$43.$$p, $yield = $iter || nil, self = this, last = nil, $case = nil, block = nil;
+      var $yield = $$each.$$p || nil, self = this, last = nil, $ret_or_1 = nil, block = nil;
 
-      if ($iter) $Matrix_each$43.$$p = null;
+      delete $$each.$$p;
       
       
-      if (which == null) {
-        which = "all";
-      };
-      if (($yield !== nil)) {
-      } else {
+      if (which == null) which = "all";;
+      if (!($yield !== nil)) {
         return self.$to_enum("each", which)
       };
       last = $rb_minus(self.$column_count(), 1);
-      $case = which;
-      if ("all"['$===']($case)) {
-      block = $$($nesting, 'Proc').$new();
-      $send(self.rows, 'each', [], ($$44 = function(row){var self = $$44.$$s == null ? this : $$44.$$s;
-
+      if ($eqeqeq("all", ($ret_or_1 = which))) {
         
-        
-        if (row == null) {
-          row = nil;
-        };
-        return $send(row, 'each', [], block.$to_proc());}, $$44.$$s = self, $$44.$$arity = 1, $$44));}
-      else if ("diagonal"['$===']($case)) {$send(self.rows, 'each_with_index', [], ($$45 = function(row, row_index){var self = $$45.$$s == null ? this : $$45.$$s, $$46;
-
-        
-        
-        if (row == null) {
-          row = nil;
-        };
-        
-        if (row_index == null) {
-          row_index = nil;
-        };
-        return Opal.yield1($yield, $send(row, 'fetch', [row_index], ($$46 = function(){var self = $$46.$$s == null ? this : $$46.$$s;
-
-          Opal.ret(self)}, $$46.$$s = self, $$46.$$arity = 0, $$46)));;}, $$45.$$s = self, $$45.$$arity = 2, $$45))}
-      else if ("off_diagonal"['$===']($case)) {$send(self.rows, 'each_with_index', [], ($$47 = function(row, row_index){var self = $$47.$$s == null ? this : $$47.$$s, $$48;
-
-        
-        
-        if (row == null) {
-          row = nil;
-        };
-        
-        if (row_index == null) {
-          row_index = nil;
-        };
-        return $send(self.$column_count(), 'times', [], ($$48 = function(col_index){var self = $$48.$$s == null ? this : $$48.$$s;
+        block = $$('Proc').$new();
+        $send(self.rows, 'each', [], function $$23(row){
+          
+          
+          if (row == null) row = nil;;
+          return $send(row, 'each', [], block.$to_proc());}, 1);
+      } else if ($eqeqeq("diagonal", $ret_or_1)) {
+        $send(self.rows, 'each_with_index', [], function $$24(row, row_index){var self = $$24.$$s == null ? this : $$24.$$s;
 
           
           
-          if (col_index == null) {
-            col_index = nil;
-          };
-          if (row_index['$=='](col_index)) {
-            return nil
-          } else {
-            return Opal.yield1($yield, row['$[]'](col_index));
-          };}, $$48.$$s = self, $$48.$$arity = 1, $$48));}, $$47.$$s = self, $$47.$$arity = 2, $$47))}
-      else if ("lower"['$===']($case)) {$send(self.rows, 'each_with_index', [], ($$49 = function(row, row_index){var self = $$49.$$s == null ? this : $$49.$$s, $$50;
+          if (row == null) row = nil;;
+          
+          if (row_index == null) row_index = nil;;
+          return Opal.yield1($yield, $send(row, 'fetch', [row_index], function $$25(){var self = $$25.$$s == null ? this : $$25.$$s;
 
-        
-        
-        if (row == null) {
-          row = nil;
-        };
-        
-        if (row_index == null) {
-          row_index = nil;
-        };
-        return $send((0), 'upto', [[row_index, last].$min()], ($$50 = function(col_index){var self = $$50.$$s == null ? this : $$50.$$s;
+            Opal.ret(self)}, {$$arity: 0, $$s: self}));;}, {$$arity: 2, $$s: self})
+      } else if ($eqeqeq("off_diagonal", $ret_or_1)) {
+        $send(self.rows, 'each_with_index', [], function $$26(row, row_index){var self = $$26.$$s == null ? this : $$26.$$s;
 
           
           
-          if (col_index == null) {
-            col_index = nil;
-          };
-          return Opal.yield1($yield, row['$[]'](col_index));;}, $$50.$$s = self, $$50.$$arity = 1, $$50));}, $$49.$$s = self, $$49.$$arity = 2, $$49))}
-      else if ("strict_lower"['$===']($case)) {$send(self.rows, 'each_with_index', [], ($$51 = function(row, row_index){var self = $$51.$$s == null ? this : $$51.$$s, $$52;
-
-        
-        
-        if (row == null) {
-          row = nil;
-        };
-        
-        if (row_index == null) {
-          row_index = nil;
-        };
-        return $send([row_index, self.$column_count()].$min(), 'times', [], ($$52 = function(col_index){var self = $$52.$$s == null ? this : $$52.$$s;
-
+          if (row == null) row = nil;;
+          
+          if (row_index == null) row_index = nil;;
+          return $send(self.$column_count(), 'times', [], function $$27(col_index){
+            
+            
+            if (col_index == null) col_index = nil;;
+            if ($eqeq(row_index, col_index)) {
+              return nil
+            } else {
+              return Opal.yield1($yield, row['$[]'](col_index));
+            };}, 1);}, {$$arity: 2, $$s: self})
+      } else if ($eqeqeq("lower", $ret_or_1)) {
+        $send(self.rows, 'each_with_index', [], function $$28(row, row_index){
           
           
-          if (col_index == null) {
-            col_index = nil;
-          };
-          return Opal.yield1($yield, row['$[]'](col_index));;}, $$52.$$s = self, $$52.$$arity = 1, $$52));}, $$51.$$s = self, $$51.$$arity = 2, $$51))}
-      else if ("strict_upper"['$===']($case)) {$send(self.rows, 'each_with_index', [], ($$53 = function(row, row_index){var self = $$53.$$s == null ? this : $$53.$$s, $$54;
-
-        
-        
-        if (row == null) {
-          row = nil;
-        };
-        
-        if (row_index == null) {
-          row_index = nil;
-        };
-        return $send($rb_plus(row_index, 1), 'upto', [last], ($$54 = function(col_index){var self = $$54.$$s == null ? this : $$54.$$s;
+          if (row == null) row = nil;;
+          
+          if (row_index == null) row_index = nil;;
+          return $send((0), 'upto', [[row_index, last].$min()], function $$29(col_index){
+            
+            
+            if (col_index == null) col_index = nil;;
+            return Opal.yield1($yield, row['$[]'](col_index));;}, 1);}, 2)
+      } else if ($eqeqeq("strict_lower", $ret_or_1)) {
+        $send(self.rows, 'each_with_index', [], function $$30(row, row_index){var self = $$30.$$s == null ? this : $$30.$$s;
 
           
           
-          if (col_index == null) {
-            col_index = nil;
-          };
-          return Opal.yield1($yield, row['$[]'](col_index));;}, $$54.$$s = self, $$54.$$arity = 1, $$54));}, $$53.$$s = self, $$53.$$arity = 2, $$53))}
-      else if ("upper"['$===']($case)) {$send(self.rows, 'each_with_index', [], ($$55 = function(row, row_index){var self = $$55.$$s == null ? this : $$55.$$s, $$56;
-
-        
-        
-        if (row == null) {
-          row = nil;
-        };
-        
-        if (row_index == null) {
-          row_index = nil;
-        };
-        return $send(row_index, 'upto', [last], ($$56 = function(col_index){var self = $$56.$$s == null ? this : $$56.$$s;
-
+          if (row == null) row = nil;;
+          
+          if (row_index == null) row_index = nil;;
+          return $send([row_index, self.$column_count()].$min(), 'times', [], function $$31(col_index){
+            
+            
+            if (col_index == null) col_index = nil;;
+            return Opal.yield1($yield, row['$[]'](col_index));;}, 1);}, {$$arity: 2, $$s: self})
+      } else if ($eqeqeq("strict_upper", $ret_or_1)) {
+        $send(self.rows, 'each_with_index', [], function $$32(row, row_index){
           
           
-          if (col_index == null) {
-            col_index = nil;
-          };
-          return Opal.yield1($yield, row['$[]'](col_index));;}, $$56.$$s = self, $$56.$$arity = 1, $$56));}, $$55.$$s = self, $$55.$$arity = 2, $$55))}
-      else {self.$raise($$($nesting, 'ArgumentError'), "" + "expected " + (which.$inspect()) + " to be one of :all, :diagonal, :off_diagonal, :lower, :strict_lower, :strict_upper or :upper")};
+          if (row == null) row = nil;;
+          
+          if (row_index == null) row_index = nil;;
+          return $send($rb_plus(row_index, 1), 'upto', [last], function $$33(col_index){
+            
+            
+            if (col_index == null) col_index = nil;;
+            return Opal.yield1($yield, row['$[]'](col_index));;}, 1);}, 2)
+      } else if ($eqeqeq("upper", $ret_or_1)) {
+        $send(self.rows, 'each_with_index', [], function $$34(row, row_index){
+          
+          
+          if (row == null) row = nil;;
+          
+          if (row_index == null) row_index = nil;;
+          return $send(row_index, 'upto', [last], function $$35(col_index){
+            
+            
+            if (col_index == null) col_index = nil;;
+            return Opal.yield1($yield, row['$[]'](col_index));;}, 1);}, 2)
+      } else {
+        self.$raise($$('ArgumentError'), "expected " + (which.$inspect()) + " to be one of :all, :diagonal, :off_diagonal, :lower, :strict_lower, :strict_upper or :upper")
+      };
       return self;
       } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
-    }, $Matrix_each$43.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$each_with_index', $Matrix_each_with_index$57 = function $$each_with_index(which) {try {
+    $def(self, '$each_with_index', function $$each_with_index(which) {try {
 
-      var $$58, $$60, $$62, $$64, $$66, $$68, $$70, $iter = $Matrix_each_with_index$57.$$p, $yield = $iter || nil, self = this, last = nil, $case = nil;
+      var $yield = $$each_with_index.$$p || nil, self = this, last = nil, $ret_or_1 = nil;
 
-      if ($iter) $Matrix_each_with_index$57.$$p = null;
+      delete $$each_with_index.$$p;
       
       
-      if (which == null) {
-        which = "all";
-      };
-      if (($yield !== nil)) {
-      } else {
+      if (which == null) which = "all";;
+      if (!($yield !== nil)) {
         return self.$to_enum("each_with_index", which)
       };
       last = $rb_minus(self.$column_count(), 1);
-      $case = which;
-      if ("all"['$===']($case)) {$send(self.rows, 'each_with_index', [], ($$58 = function(row, row_index){var self = $$58.$$s == null ? this : $$58.$$s, $$59;
-
-        
-        
-        if (row == null) {
-          row = nil;
-        };
-        
-        if (row_index == null) {
-          row_index = nil;
-        };
-        return $send(row, 'each_with_index', [], ($$59 = function(e, col_index){var self = $$59.$$s == null ? this : $$59.$$s;
-
+      if ($eqeqeq("all", ($ret_or_1 = which))) {
+        $send(self.rows, 'each_with_index', [], function $$36(row, row_index){
           
           
-          if (e == null) {
-            e = nil;
-          };
+          if (row == null) row = nil;;
           
-          if (col_index == null) {
-            col_index = nil;
-          };
-          return Opal.yieldX($yield, [e, row_index, col_index]);;}, $$59.$$s = self, $$59.$$arity = 2, $$59));}, $$58.$$s = self, $$58.$$arity = 2, $$58))}
-      else if ("diagonal"['$===']($case)) {$send(self.rows, 'each_with_index', [], ($$60 = function(row, row_index){var self = $$60.$$s == null ? this : $$60.$$s, $$61;
-
-        
-        
-        if (row == null) {
-          row = nil;
-        };
-        
-        if (row_index == null) {
-          row_index = nil;
-        };
-        return Opal.yieldX($yield, [$send(row, 'fetch', [row_index], ($$61 = function(){var self = $$61.$$s == null ? this : $$61.$$s;
-
-          Opal.ret(self)}, $$61.$$s = self, $$61.$$arity = 0, $$61)), row_index, row_index]);;}, $$60.$$s = self, $$60.$$arity = 2, $$60))}
-      else if ("off_diagonal"['$===']($case)) {$send(self.rows, 'each_with_index', [], ($$62 = function(row, row_index){var self = $$62.$$s == null ? this : $$62.$$s, $$63;
-
-        
-        
-        if (row == null) {
-          row = nil;
-        };
-        
-        if (row_index == null) {
-          row_index = nil;
-        };
-        return $send(self.$column_count(), 'times', [], ($$63 = function(col_index){var self = $$63.$$s == null ? this : $$63.$$s;
+          if (row_index == null) row_index = nil;;
+          return $send(row, 'each_with_index', [], function $$37(e, col_index){
+            
+            
+            if (e == null) e = nil;;
+            
+            if (col_index == null) col_index = nil;;
+            return Opal.yieldX($yield, [e, row_index, col_index]);;}, 2);}, 2)
+      } else if ($eqeqeq("diagonal", $ret_or_1)) {
+        $send(self.rows, 'each_with_index', [], function $$38(row, row_index){var self = $$38.$$s == null ? this : $$38.$$s;
 
           
           
-          if (col_index == null) {
-            col_index = nil;
-          };
-          if (row_index['$=='](col_index)) {
-            return nil
-          } else {
-            return Opal.yieldX($yield, [row['$[]'](col_index), row_index, col_index]);
-          };}, $$63.$$s = self, $$63.$$arity = 1, $$63));}, $$62.$$s = self, $$62.$$arity = 2, $$62))}
-      else if ("lower"['$===']($case)) {$send(self.rows, 'each_with_index', [], ($$64 = function(row, row_index){var self = $$64.$$s == null ? this : $$64.$$s, $$65;
+          if (row == null) row = nil;;
+          
+          if (row_index == null) row_index = nil;;
+          return Opal.yieldX($yield, [$send(row, 'fetch', [row_index], function $$39(){var self = $$39.$$s == null ? this : $$39.$$s;
 
-        
-        
-        if (row == null) {
-          row = nil;
-        };
-        
-        if (row_index == null) {
-          row_index = nil;
-        };
-        return $send((0), 'upto', [[row_index, last].$min()], ($$65 = function(col_index){var self = $$65.$$s == null ? this : $$65.$$s;
+            Opal.ret(self)}, {$$arity: 0, $$s: self}), row_index, row_index]);;}, {$$arity: 2, $$s: self})
+      } else if ($eqeqeq("off_diagonal", $ret_or_1)) {
+        $send(self.rows, 'each_with_index', [], function $$40(row, row_index){var self = $$40.$$s == null ? this : $$40.$$s;
 
           
           
-          if (col_index == null) {
-            col_index = nil;
-          };
-          return Opal.yieldX($yield, [row['$[]'](col_index), row_index, col_index]);;}, $$65.$$s = self, $$65.$$arity = 1, $$65));}, $$64.$$s = self, $$64.$$arity = 2, $$64))}
-      else if ("strict_lower"['$===']($case)) {$send(self.rows, 'each_with_index', [], ($$66 = function(row, row_index){var self = $$66.$$s == null ? this : $$66.$$s, $$67;
-
-        
-        
-        if (row == null) {
-          row = nil;
-        };
-        
-        if (row_index == null) {
-          row_index = nil;
-        };
-        return $send([row_index, self.$column_count()].$min(), 'times', [], ($$67 = function(col_index){var self = $$67.$$s == null ? this : $$67.$$s;
-
+          if (row == null) row = nil;;
           
+          if (row_index == null) row_index = nil;;
+          return $send(self.$column_count(), 'times', [], function $$41(col_index){
+            
+            
+            if (col_index == null) col_index = nil;;
+            if ($eqeq(row_index, col_index)) {
+              return nil
+            } else {
+              return Opal.yieldX($yield, [row['$[]'](col_index), row_index, col_index]);
+            };}, 1);}, {$$arity: 2, $$s: self})
+      } else if ($eqeqeq("lower", $ret_or_1)) {
+        $send(self.rows, 'each_with_index', [], function $$42(row, row_index){
           
-          if (col_index == null) {
-            col_index = nil;
-          };
-          return Opal.yieldX($yield, [row['$[]'](col_index), row_index, col_index]);;}, $$67.$$s = self, $$67.$$arity = 1, $$67));}, $$66.$$s = self, $$66.$$arity = 2, $$66))}
-      else if ("strict_upper"['$===']($case)) {$send(self.rows, 'each_with_index', [], ($$68 = function(row, row_index){var self = $$68.$$s == null ? this : $$68.$$s, $$69;
-
-        
-        
-        if (row == null) {
-          row = nil;
-        };
-        
-        if (row_index == null) {
-          row_index = nil;
-        };
-        return $send($rb_plus(row_index, 1), 'upto', [last], ($$69 = function(col_index){var self = $$69.$$s == null ? this : $$69.$$s;
-
           
+          if (row == null) row = nil;;
           
-          if (col_index == null) {
-            col_index = nil;
-          };
-          return Opal.yieldX($yield, [row['$[]'](col_index), row_index, col_index]);;}, $$69.$$s = self, $$69.$$arity = 1, $$69));}, $$68.$$s = self, $$68.$$arity = 2, $$68))}
-      else if ("upper"['$===']($case)) {$send(self.rows, 'each_with_index', [], ($$70 = function(row, row_index){var self = $$70.$$s == null ? this : $$70.$$s, $$71;
-
-        
-        
-        if (row == null) {
-          row = nil;
-        };
-        
-        if (row_index == null) {
-          row_index = nil;
-        };
-        return $send(row_index, 'upto', [last], ($$71 = function(col_index){var self = $$71.$$s == null ? this : $$71.$$s;
+          if (row_index == null) row_index = nil;;
+          return $send((0), 'upto', [[row_index, last].$min()], function $$43(col_index){
+            
+            
+            if (col_index == null) col_index = nil;;
+            return Opal.yieldX($yield, [row['$[]'](col_index), row_index, col_index]);;}, 1);}, 2)
+      } else if ($eqeqeq("strict_lower", $ret_or_1)) {
+        $send(self.rows, 'each_with_index', [], function $$44(row, row_index){var self = $$44.$$s == null ? this : $$44.$$s;
 
           
           
-          if (col_index == null) {
-            col_index = nil;
-          };
-          return Opal.yieldX($yield, [row['$[]'](col_index), row_index, col_index]);;}, $$71.$$s = self, $$71.$$arity = 1, $$71));}, $$70.$$s = self, $$70.$$arity = 2, $$70))}
-      else {self.$raise($$($nesting, 'ArgumentError'), "" + "expected " + (which.$inspect()) + " to be one of :all, :diagonal, :off_diagonal, :lower, :strict_lower, :strict_upper or :upper")};
+          if (row == null) row = nil;;
+          
+          if (row_index == null) row_index = nil;;
+          return $send([row_index, self.$column_count()].$min(), 'times', [], function $$45(col_index){
+            
+            
+            if (col_index == null) col_index = nil;;
+            return Opal.yieldX($yield, [row['$[]'](col_index), row_index, col_index]);;}, 1);}, {$$arity: 2, $$s: self})
+      } else if ($eqeqeq("strict_upper", $ret_or_1)) {
+        $send(self.rows, 'each_with_index', [], function $$46(row, row_index){
+          
+          
+          if (row == null) row = nil;;
+          
+          if (row_index == null) row_index = nil;;
+          return $send($rb_plus(row_index, 1), 'upto', [last], function $$47(col_index){
+            
+            
+            if (col_index == null) col_index = nil;;
+            return Opal.yieldX($yield, [row['$[]'](col_index), row_index, col_index]);;}, 1);}, 2)
+      } else if ($eqeqeq("upper", $ret_or_1)) {
+        $send(self.rows, 'each_with_index', [], function $$48(row, row_index){
+          
+          
+          if (row == null) row = nil;;
+          
+          if (row_index == null) row_index = nil;;
+          return $send(row_index, 'upto', [last], function $$49(col_index){
+            
+            
+            if (col_index == null) col_index = nil;;
+            return Opal.yieldX($yield, [row['$[]'](col_index), row_index, col_index]);;}, 1);}, 2)
+      } else {
+        self.$raise($$('ArgumentError'), "expected " + (which.$inspect()) + " to be one of :all, :diagonal, :off_diagonal, :lower, :strict_lower, :strict_upper or :upper")
+      };
       return self;
       } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
-    }, $Matrix_each_with_index$57.$$arity = -1);
-    Opal.const_set($nesting[0], 'SELECTORS', $hash2(["all", "diagonal", "off_diagonal", "lower", "strict_lower", "strict_upper", "upper"], {"all": true, "diagonal": true, "off_diagonal": true, "lower": true, "strict_lower": true, "strict_upper": true, "upper": true}).$freeze());
+    }, -1);
+    $const_set($nesting[0], 'SELECTORS', $hash2(["all", "diagonal", "off_diagonal", "lower", "strict_lower", "strict_upper", "upper"], {"all": true, "diagonal": true, "off_diagonal": true, "lower": true, "strict_lower": true, "strict_upper": true, "upper": true}).$freeze());
     
-    Opal.def(self, '$index', $Matrix_index$72 = function $$index($a) {try {
+    $def(self, '$index', function $$index($a) {try {
 
-      var $post_args, args, $$73, $$74, $iter = $Matrix_index$72.$$p, $yield = $iter || nil, self = this, which = nil, $ret_or_8 = nil, $ret_or_9 = nil, value = nil;
+      var $post_args, args, $yield = $$index.$$p || nil, self = this, which = nil, value = nil;
 
-      if ($iter) $Matrix_index$72.$$p = null;
+      delete $$index.$$p;
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
       if ($truthy($rb_gt(args.$size(), 2))) {
-        self.$raise($$($nesting, 'ArgumentError'), "" + "wrong number of arguments(" + (args.$size()) + " for 0-2)")};
-      which = (function() {if ($truthy((function() {if ($truthy(($ret_or_8 = args.$size()['$=='](2)))) {
-        return $ret_or_8
-      } else {
-        return $$($nesting, 'SELECTORS')['$include?'](args.$last())
-      }; return nil; })())) {
-        return args.$pop()
-      } else {
-        return "all"
-      }; return nil; })();
-      if ($truthy((function() {if ($truthy(($ret_or_9 = ($yield !== nil)))) {
-        return $ret_or_9
-      } else {
-        return args.$size()['$=='](1)
-      }; return nil; })())) {
-      } else {
-        return $send(self, 'to_enum', ["find_index", which].concat(Opal.to_a(args)))
+        self.$raise($$('ArgumentError'), "wrong number of arguments(" + (args.$size()) + " for 0-2)")
       };
-      if (args.$size()['$=='](1)) {
+      which = (($eqeq(args.$size(), 2) || ($truthy($$('SELECTORS')['$include?'](args.$last())))) ? (args.$pop()) : ("all"));
+      if (!(($yield !== nil) || ($eqeq(args.$size(), 1)))) {
+        return $send(self, 'to_enum', ["find_index", which].concat($to_a(args)))
+      };
+      if ($eqeq(args.$size(), 1)) {
         
         value = args.$first();
-        $send(self, 'each_with_index', [which], ($$73 = function(e, row_index, col_index){var self = $$73.$$s == null ? this : $$73.$$s;
-
+        $send(self, 'each_with_index', [which], function $$50(e, row_index, col_index){
           
           
-          if (e == null) {
-            e = nil;
-          };
+          if (e == null) e = nil;;
           
-          if (row_index == null) {
-            row_index = nil;
-          };
+          if (row_index == null) row_index = nil;;
           
-          if (col_index == null) {
-            col_index = nil;
-          };
-          if (e['$=='](value)) {
+          if (col_index == null) col_index = nil;;
+          if ($eqeq(e, value)) {
             Opal.ret([row_index, col_index])
           } else {
             return nil
-          };}, $$73.$$s = self, $$73.$$arity = 3, $$73));
+          };}, 3);
       } else {
-        $send(self, 'each_with_index', [which], ($$74 = function(e, row_index, col_index){var self = $$74.$$s == null ? this : $$74.$$s;
-
+        $send(self, 'each_with_index', [which], function $$51(e, row_index, col_index){
           
           
-          if (e == null) {
-            e = nil;
-          };
+          if (e == null) e = nil;;
           
-          if (row_index == null) {
-            row_index = nil;
-          };
+          if (row_index == null) row_index = nil;;
           
-          if (col_index == null) {
-            col_index = nil;
-          };
+          if (col_index == null) col_index = nil;;
           if ($truthy(Opal.yield1($yield, e))) {
             Opal.ret([row_index, col_index])
           } else {
             return nil
-          };}, $$74.$$s = self, $$74.$$arity = 3, $$74))
+          };}, 3)
       };
       return nil;
       } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
-    }, $Matrix_index$72.$$arity = -1);
+    }, -1);
     self.$alias_method("find_index", "index");
     
-    Opal.def(self, '$minor', $Matrix_minor$75 = function $$minor($a) {
-      var $post_args, param, $b, $c, $$76, self = this, $case = nil, row_range = nil, col_range = nil, from_row = nil, to_row = nil, size_row = nil, from_col = nil, to_col = nil, size_col = nil, $ret_or_10 = nil, $ret_or_11 = nil, $ret_or_12 = nil, $ret_or_13 = nil, rows = nil;
+    $def(self, '$minor', function $$minor($a) {
+      var $post_args, param, $b, $c, self = this, $ret_or_1 = nil, row_range = nil, col_range = nil, from_row = nil, to_row = nil, size_row = nil, from_col = nil, to_col = nil, size_col = nil, rows = nil;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       param = $post_args;;
-      $case = param.$size();
-      if ((2)['$===']($case)) {
-      $c = param, $b = Opal.to_ary($c), (row_range = ($b[0] == null ? nil : $b[0])), (col_range = ($b[1] == null ? nil : $b[1])), $c;
-      from_row = row_range.$first();
-      if ($truthy($rb_lt(from_row, 0))) {
-        from_row = $rb_plus(from_row, self.$row_count())};
-      to_row = row_range.$end();
-      if ($truthy($rb_lt(to_row, 0))) {
-        to_row = $rb_plus(to_row, self.$row_count())};
-      if ($truthy(row_range['$exclude_end?']())) {
+      if ($eqeqeq(2, ($ret_or_1 = param.$size()))) {
+        
+        $c = param, $b = $to_ary($c), (row_range = ($b[0] == null ? nil : $b[0])), (col_range = ($b[1] == null ? nil : $b[1])), $c;
+        from_row = row_range.$first();
+        if ($truthy($rb_lt(from_row, 0))) {
+          from_row = $rb_plus(from_row, self.$row_count())
+        };
+        to_row = row_range.$end();
+        if ($truthy($rb_lt(to_row, 0))) {
+          to_row = $rb_plus(to_row, self.$row_count())
+        };
+        if (!$truthy(row_range['$exclude_end?']())) {
+          to_row = $rb_plus(to_row, 1)
+        };
+        size_row = $rb_minus(to_row, from_row);
+        from_col = col_range.$first();
+        if ($truthy($rb_lt(from_col, 0))) {
+          from_col = $rb_plus(from_col, self.$column_count())
+        };
+        to_col = col_range.$end();
+        if ($truthy($rb_lt(to_col, 0))) {
+          to_col = $rb_plus(to_col, self.$column_count())
+        };
+        if (!$truthy(col_range['$exclude_end?']())) {
+          to_col = $rb_plus(to_col, 1)
+        };
+        size_col = $rb_minus(to_col, from_col);
+      } else if ($eqeqeq(4, $ret_or_1)) {
+        
+        $c = param, $b = $to_ary($c), (from_row = ($b[0] == null ? nil : $b[0])), (size_row = ($b[1] == null ? nil : $b[1])), (from_col = ($b[2] == null ? nil : $b[2])), (size_col = ($b[3] == null ? nil : $b[3])), $c;
+        if (($truthy($rb_lt(size_row, 0)) || ($truthy($rb_lt(size_col, 0))))) {
+          return nil
+        };
+        if ($truthy($rb_lt(from_row, 0))) {
+          from_row = $rb_plus(from_row, self.$row_count())
+        };
+        if ($truthy($rb_lt(from_col, 0))) {
+          from_col = $rb_plus(from_col, self.$column_count())
+        };
       } else {
-        to_row = $rb_plus(to_row, 1)
+        self.$raise($$('ArgumentError'), param.$inspect())
       };
-      size_row = $rb_minus(to_row, from_row);
-      from_col = col_range.$first();
-      if ($truthy($rb_lt(from_col, 0))) {
-        from_col = $rb_plus(from_col, self.$column_count())};
-      to_col = col_range.$end();
-      if ($truthy($rb_lt(to_col, 0))) {
-        to_col = $rb_plus(to_col, self.$column_count())};
-      if ($truthy(col_range['$exclude_end?']())) {
-      } else {
-        to_col = $rb_plus(to_col, 1)
+      if (((($truthy($rb_gt(from_row, self.$row_count())) || ($truthy($rb_gt(from_col, self.$column_count())))) || ($truthy($rb_lt(from_row, 0)))) || ($truthy($rb_lt(from_col, 0))))) {
+        return nil
       };
-      size_col = $rb_minus(to_col, from_col);}
-      else if ((4)['$===']($case)) {
-      $c = param, $b = Opal.to_ary($c), (from_row = ($b[0] == null ? nil : $b[0])), (size_row = ($b[1] == null ? nil : $b[1])), (from_col = ($b[2] == null ? nil : $b[2])), (size_col = ($b[3] == null ? nil : $b[3])), $c;
-      if ($truthy((function() {if ($truthy(($ret_or_10 = $rb_lt(size_row, 0)))) {
-        return $ret_or_10
-      } else {
-        return $rb_lt(size_col, 0)
-      }; return nil; })())) {
-        return nil};
-      if ($truthy($rb_lt(from_row, 0))) {
-        from_row = $rb_plus(from_row, self.$row_count())};
-      if ($truthy($rb_lt(from_col, 0))) {
-        from_col = $rb_plus(from_col, self.$column_count())};}
-      else {self.$raise($$($nesting, 'ArgumentError'), param.$inspect())};
-      if ($truthy((function() {if ($truthy(($ret_or_11 = (function() {if ($truthy(($ret_or_12 = (function() {if ($truthy(($ret_or_13 = $rb_gt(from_row, self.$row_count())))) {
-        return $ret_or_13
-      } else {
-        return $rb_gt(from_col, self.$column_count())
-      }; return nil; })()))) {
-        return $ret_or_12
-      } else {
-        return $rb_lt(from_row, 0)
-      }; return nil; })()))) {
-        return $ret_or_11
-      } else {
-        return $rb_lt(from_col, 0)
-      }; return nil; })())) {
-        return nil};
-      rows = $send(self.rows['$[]'](from_row, size_row), 'collect', [], ($$76 = function(row){var self = $$76.$$s == null ? this : $$76.$$s;
-
+      rows = $send(self.rows['$[]'](from_row, size_row), 'collect', [], function $$52(row){
         
         
-        if (row == null) {
-          row = nil;
-        };
-        return row['$[]'](from_col, size_col);}, $$76.$$s = self, $$76.$$arity = 1, $$76));
+        if (row == null) row = nil;;
+        return row['$[]'](from_col, size_col);}, 1);
       return self.$new_matrix(rows, [$rb_minus(self.$column_count(), from_col), size_col].$min());
-    }, $Matrix_minor$75.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$first_minor', $Matrix_first_minor$77 = function $$first_minor(row, column) {
-      var $$78, self = this, $ret_or_14 = nil, $ret_or_15 = nil, arrays = nil;
+    $def(self, '$first_minor', function $$first_minor(row, column) {
+      var self = this, arrays = nil;
 
       
       if ($truthy(self['$empty?']())) {
-        self.$raise($$($nesting, 'RuntimeError'), "first_minor of empty matrix is not defined")};
-      if ($truthy((function() {if ($truthy(($ret_or_14 = $rb_le(0, row)))) {
-        return $rb_lt(row, self.$row_count())
-      } else {
-        return $ret_or_14
-      }; return nil; })())) {
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "" + "invalid row (" + (row.$inspect()) + " for 0.." + ($rb_minus(self.$row_count(), 1)) + ")")
+        self.$raise($$('RuntimeError'), "first_minor of empty matrix is not defined")
       };
-      if ($truthy((function() {if ($truthy(($ret_or_15 = $rb_le(0, column)))) {
-        return $rb_lt(column, self.$column_count())
-      } else {
-        return $ret_or_15
-      }; return nil; })())) {
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "" + "invalid column (" + (column.$inspect()) + " for 0.." + ($rb_minus(self.$column_count(), 1)) + ")")
+      if (!($rb_le(0, row) && ($truthy($rb_lt(row, self.$row_count()))))) {
+        self.$raise($$('ArgumentError'), "invalid row (" + (row.$inspect()) + " for 0.." + ($rb_minus(self.$row_count(), 1)) + ")")
+      };
+      if (!($rb_le(0, column) && ($truthy($rb_lt(column, self.$column_count()))))) {
+        self.$raise($$('ArgumentError'), "invalid column (" + (column.$inspect()) + " for 0.." + ($rb_minus(self.$column_count(), 1)) + ")")
       };
       arrays = self.$to_a();
       arrays.$delete_at(row);
-      $send(arrays, 'each', [], ($$78 = function(array){var self = $$78.$$s == null ? this : $$78.$$s;
-
+      $send(arrays, 'each', [], function $$53(array){
         
         
-        if (array == null) {
-          array = nil;
-        };
-        return array.$delete_at(column);}, $$78.$$s = self, $$78.$$arity = 1, $$78));
+        if (array == null) array = nil;;
+        return array.$delete_at(column);}, 1);
       return self.$new_matrix(arrays, $rb_minus(self.$column_count(), 1));
-    }, $Matrix_first_minor$77.$$arity = 2);
+    }, 2);
     
-    Opal.def(self, '$cofactor', $Matrix_cofactor$79 = function $$cofactor(row, column) {
+    $def(self, '$cofactor', function $$cofactor(row, column) {
       var self = this, det_of_minor = nil;
 
       
       if ($truthy(self['$empty?']())) {
-        self.$raise($$($nesting, 'RuntimeError'), "cofactor of empty matrix is not defined")};
-      if ($truthy(self['$square?']())) {
-      } else {
-        $$($nesting, 'Matrix').$Raise($$($nesting, 'ErrDimensionMismatch'))
+        self.$raise($$('RuntimeError'), "cofactor of empty matrix is not defined")
+      };
+      if (!$truthy(self['$square?']())) {
+        $$('Matrix').$Raise($$('ErrDimensionMismatch'))
       };
       det_of_minor = self.$first_minor(row, column).$determinant();
       return $rb_times(det_of_minor, (-1)['$**']($rb_plus(row, column)));
-    }, $Matrix_cofactor$79.$$arity = 2);
+    }, 2);
     
-    Opal.def(self, '$adjugate', $Matrix_adjugate$80 = function $$adjugate() {
-      var $$81, self = this;
+    $def(self, '$adjugate', function $$adjugate() {
+      var self = this;
 
       
-      if ($truthy(self['$square?']())) {
-      } else {
-        $$($nesting, 'Matrix').$Raise($$($nesting, 'ErrDimensionMismatch'))
+      if (!$truthy(self['$square?']())) {
+        $$('Matrix').$Raise($$('ErrDimensionMismatch'))
       };
-      return $send($$($nesting, 'Matrix'), 'build', [self.$row_count(), self.$column_count()], ($$81 = function(row, column){var self = $$81.$$s == null ? this : $$81.$$s;
+      return $send($$('Matrix'), 'build', [self.$row_count(), self.$column_count()], function $$54(row, column){var self = $$54.$$s == null ? this : $$54.$$s;
 
         
         
-        if (row == null) {
-          row = nil;
-        };
+        if (row == null) row = nil;;
         
-        if (column == null) {
-          column = nil;
-        };
-        return self.$cofactor(column, row);}, $$81.$$s = self, $$81.$$arity = 2, $$81));
-    }, $Matrix_adjugate$80.$$arity = 0);
+        if (column == null) column = nil;;
+        return self.$cofactor(column, row);}, {$$arity: 2, $$s: self});
+    }, 0);
     
-    Opal.def(self, '$laplace_expansion', $Matrix_laplace_expansion$82 = function $$laplace_expansion($kwargs) {
-      var row, column, $$83, self = this, num = nil, $ret_or_16 = nil, $ret_or_17 = nil, $ret_or_18 = nil, $ret_or_19 = nil;
+    $def(self, '$laplace_expansion', function $$laplace_expansion($kwargs) {
+      var row, column, self = this, num = nil, $ret_or_1 = nil;
 
       
       
@@ -3356,677 +2815,524 @@ Opal.modules["matrix"] = function(Opal) {
       };
       
       row = $kwargs.$$smap["row"];
-      if (row == null) {
-        row = nil
-      };
+      if (row == null) row = nil;
       
       column = $kwargs.$$smap["column"];
-      if (column == null) {
-        column = nil
+      if (column == null) column = nil;
+      num = ($truthy(($ret_or_1 = row)) ? ($ret_or_1) : (column));
+      if (($not(num) || (($truthy(row) && ($truthy(column)))))) {
+        self.$raise($$('ArgumentError'), "exactly one the row or column arguments must be specified")
       };
-      num = (function() {if ($truthy(($ret_or_16 = row))) {
-        return $ret_or_16
-      } else {
-        return column
-      }; return nil; })();
-      if ($truthy((function() {if ($truthy(($ret_or_17 = num['$!']()))) {
-        return $ret_or_17
-      } else {
-        
-        if ($truthy(($ret_or_18 = row))) {
-          return column
-        } else {
-          return $ret_or_18
-        };
-      }; return nil; })())) {
-        self.$raise($$($nesting, 'ArgumentError'), "exactly one the row or column arguments must be specified")};
-      if ($truthy(self['$square?']())) {
-      } else {
-        $$($nesting, 'Matrix').$Raise($$($nesting, 'ErrDimensionMismatch'))
+      if (!$truthy(self['$square?']())) {
+        $$('Matrix').$Raise($$('ErrDimensionMismatch'))
       };
       if ($truthy(self['$empty?']())) {
-        self.$raise($$($nesting, 'RuntimeError'), "laplace_expansion of empty matrix is not defined")};
-      if ($truthy((function() {if ($truthy(($ret_or_19 = $rb_le(0, num)))) {
-        return $rb_lt(num, self.$row_count())
-      } else {
-        return $ret_or_19
-      }; return nil; })())) {
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "" + "invalid num (" + (num.$inspect()) + " for 0.." + ($rb_minus(self.$row_count(), 1)) + ")")
+        self.$raise($$('RuntimeError'), "laplace_expansion of empty matrix is not defined")
       };
-      return $send(self.$send((function() {if ($truthy(row)) {
-        return "row"
-      } else {
-        return "column"
-      }; return nil; })(), num).$map(), 'with_index', [], ($$83 = function(e, k){var self = $$83.$$s == null ? this : $$83.$$s;
+      if (!($rb_le(0, num) && ($truthy($rb_lt(num, self.$row_count()))))) {
+        self.$raise($$('ArgumentError'), "invalid num (" + (num.$inspect()) + " for 0.." + ($rb_minus(self.$row_count(), 1)) + ")")
+      };
+      return $send(self.$send(($truthy(row) ? ("row") : ("column")), num).$map(), 'with_index', [], function $$55(e, k){var self = $$55.$$s == null ? this : $$55.$$s;
 
         
         
-        if (e == null) {
-          e = nil;
-        };
+        if (e == null) e = nil;;
         
-        if (k == null) {
-          k = nil;
-        };
-        return $rb_times(e, $send(self, 'cofactor', Opal.to_a((function() {if ($truthy(row)) {
-          return [num, k]
-        } else {
-          return [k, num]
-        }; return nil; })())));}, $$83.$$s = self, $$83.$$arity = 2, $$83)).$inject("+");
-    }, $Matrix_laplace_expansion$82.$$arity = -1);
+        if (k == null) k = nil;;
+        return $rb_times(e, $send(self, 'cofactor', $to_a(($truthy(row) ? ([num, k]) : ([k, num])))));}, {$$arity: 2, $$s: self}).$inject("+");
+    }, -1);
     self.$alias_method("cofactor_expansion", "laplace_expansion");
     
-    Opal.def(self, '$diagonal?', $Matrix_diagonal$ques$84 = function() {
+    $def(self, '$diagonal?', function $Matrix_diagonal$ques$56() {
       var self = this;
 
       
-      if ($truthy(self['$square?']())) {
-      } else {
-        $$($nesting, 'Matrix').$Raise($$($nesting, 'ErrDimensionMismatch'))
+      if (!$truthy(self['$square?']())) {
+        $$('Matrix').$Raise($$('ErrDimensionMismatch'))
       };
       return $send(self.$each("off_diagonal"), 'all?', [], "zero?".$to_proc());
-    }, $Matrix_diagonal$ques$84.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$empty?', $Matrix_empty$ques$85 = function() {
-      var self = this, $ret_or_20 = nil;
+    $def(self, '$empty?', function $Matrix_empty$ques$57() {
+      var self = this, $ret_or_1 = nil;
 
-      if ($truthy(($ret_or_20 = self.$column_count()['$=='](0)))) {
-        return $ret_or_20
+      if ($truthy(($ret_or_1 = self.$column_count()['$=='](0)))) {
+        return $ret_or_1
       } else {
         return self.$row_count()['$=='](0)
       }
-    }, $Matrix_empty$ques$85.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$hermitian?', $Matrix_hermitian$ques$86 = function() {
-      var $$87, self = this;
+    $def(self, '$hermitian?', function $Matrix_hermitian$ques$58() {
+      var self = this;
 
       
-      if ($truthy(self['$square?']())) {
-      } else {
-        $$($nesting, 'Matrix').$Raise($$($nesting, 'ErrDimensionMismatch'))
+      if (!$truthy(self['$square?']())) {
+        $$('Matrix').$Raise($$('ErrDimensionMismatch'))
       };
-      return $send(self.$each_with_index("upper"), 'all?', [], ($$87 = function(e, row, col){var self = $$87.$$s == null ? this : $$87.$$s;
+      return $send(self.$each_with_index("upper"), 'all?', [], function $$59(e, row, col){var self = $$59.$$s == null ? this : $$59.$$s;
 
         
         
-        if (e == null) {
-          e = nil;
-        };
+        if (e == null) e = nil;;
         
-        if (row == null) {
-          row = nil;
-        };
+        if (row == null) row = nil;;
         
-        if (col == null) {
-          col = nil;
-        };
-        return e['$=='](self.$rows()['$[]'](col)['$[]'](row).$conj());}, $$87.$$s = self, $$87.$$arity = 3, $$87));
-    }, $Matrix_hermitian$ques$86.$$arity = 0);
+        if (col == null) col = nil;;
+        return e['$=='](self.$rows()['$[]'](col)['$[]'](row).$conj());}, {$$arity: 3, $$s: self});
+    }, 0);
     
-    Opal.def(self, '$lower_triangular?', $Matrix_lower_triangular$ques$88 = function() {
+    $def(self, '$lower_triangular?', function $Matrix_lower_triangular$ques$60() {
       var self = this;
 
       return $send(self.$each("strict_upper"), 'all?', [], "zero?".$to_proc())
-    }, $Matrix_lower_triangular$ques$88.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$normal?', $Matrix_normal$ques$89 = function() {try {
+    $def(self, '$normal?', function $Matrix_normal$ques$61() {try {
 
-      var $$90, self = this;
+      var self = this;
 
       
-      if ($truthy(self['$square?']())) {
-      } else {
-        $$($nesting, 'Matrix').$Raise($$($nesting, 'ErrDimensionMismatch'))
+      if (!$truthy(self['$square?']())) {
+        $$('Matrix').$Raise($$('ErrDimensionMismatch'))
       };
-      $send(self.$rows(), 'each_with_index', [], ($$90 = function(row_i, i){var self = $$90.$$s == null ? this : $$90.$$s, $$91;
+      $send(self.$rows(), 'each_with_index', [], function $$62(row_i, i){var self = $$62.$$s == null ? this : $$62.$$s;
 
         
         
-        if (row_i == null) {
-          row_i = nil;
-        };
+        if (row_i == null) row_i = nil;;
         
-        if (i == null) {
-          i = nil;
-        };
-        return $send(self.$rows(), 'each_with_index', [], ($$91 = function(row_j, j){var self = $$91.$$s == null ? this : $$91.$$s, $$92, s = nil;
+        if (i == null) i = nil;;
+        return $send(self.$rows(), 'each_with_index', [], function $$63(row_j, j){var self = $$63.$$s == null ? this : $$63.$$s, s = nil;
 
           
           
-          if (row_j == null) {
-            row_j = nil;
-          };
+          if (row_j == null) row_j = nil;;
           
-          if (j == null) {
-            j = nil;
-          };
+          if (j == null) j = nil;;
           s = 0;
-          $send(self.$rows(), 'each_with_index', [], ($$92 = function(row_k, k){var self = $$92.$$s == null ? this : $$92.$$s;
-
+          $send(self.$rows(), 'each_with_index', [], function $$64(row_k, k){
             
             
-            if (row_k == null) {
-              row_k = nil;
-            };
+            if (row_k == null) row_k = nil;;
             
-            if (k == null) {
-              k = nil;
-            };
-            return (s = $rb_plus(s, $rb_minus($rb_times(row_i['$[]'](k), row_j['$[]'](k).$conj()), $rb_times(row_k['$[]'](i).$conj(), row_k['$[]'](j)))));}, $$92.$$s = self, $$92.$$arity = 2, $$92));
-          if (s['$=='](0)) {
+            if (k == null) k = nil;;
+            return (s = $rb_plus(s, $rb_minus($rb_times(row_i['$[]'](k), row_j['$[]'](k).$conj()), $rb_times(row_k['$[]'](i).$conj(), row_k['$[]'](j)))));}, 2);
+          if ($eqeq(s, 0)) {
             return nil
           } else {
             Opal.ret(false)
-          };}, $$91.$$s = self, $$91.$$arity = 2, $$91));}, $$90.$$s = self, $$90.$$arity = 2, $$90));
+          };}, {$$arity: 2, $$s: self});}, {$$arity: 2, $$s: self});
       return true;
       } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
-    }, $Matrix_normal$ques$89.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$orthogonal?', $Matrix_orthogonal$ques$93 = function() {try {
+    $def(self, '$orthogonal?', function $Matrix_orthogonal$ques$65() {try {
 
-      var $$94, self = this;
+      var self = this;
 
       
-      if ($truthy(self['$square?']())) {
-      } else {
-        $$($nesting, 'Matrix').$Raise($$($nesting, 'ErrDimensionMismatch'))
+      if (!$truthy(self['$square?']())) {
+        $$('Matrix').$Raise($$('ErrDimensionMismatch'))
       };
-      $send(self.$rows(), 'each_with_index', [], ($$94 = function(row, i){var self = $$94.$$s == null ? this : $$94.$$s, $$95;
+      $send(self.$rows(), 'each_with_index', [], function $$66(row, i){var self = $$66.$$s == null ? this : $$66.$$s;
 
         
         
-        if (row == null) {
-          row = nil;
-        };
+        if (row == null) row = nil;;
         
-        if (i == null) {
-          i = nil;
-        };
-        return $send(self.$column_count(), 'times', [], ($$95 = function(j){var self = $$95.$$s == null ? this : $$95.$$s, $$96, s = nil;
+        if (i == null) i = nil;;
+        return $send(self.$column_count(), 'times', [], function $$67(j){var self = $$67.$$s == null ? this : $$67.$$s, s = nil;
 
           
           
-          if (j == null) {
-            j = nil;
-          };
+          if (j == null) j = nil;;
           s = 0;
-          $send(self.$row_count(), 'times', [], ($$96 = function(k){var self = $$96.$$s == null ? this : $$96.$$s;
+          $send(self.$row_count(), 'times', [], function $$68(k){var self = $$68.$$s == null ? this : $$68.$$s;
 
             
             
-            if (k == null) {
-              k = nil;
-            };
-            return (s = $rb_plus(s, $rb_times(row['$[]'](k), self.$rows()['$[]'](k)['$[]'](j))));}, $$96.$$s = self, $$96.$$arity = 1, $$96));
-          if (s['$==']((function() {if (i['$=='](j)) {
-            return 1
-          } else {
-            return 0
-          }; return nil; })())) {
+            if (k == null) k = nil;;
+            return (s = $rb_plus(s, $rb_times(row['$[]'](k), self.$rows()['$[]'](k)['$[]'](j))));}, {$$arity: 1, $$s: self});
+          if ($eqeq(s, ($eqeq(i, j) ? (1) : (0)))) {
             return nil
           } else {
             Opal.ret(false)
-          };}, $$95.$$s = self, $$95.$$arity = 1, $$95));}, $$94.$$s = self, $$94.$$arity = 2, $$94));
+          };}, {$$arity: 1, $$s: self});}, {$$arity: 2, $$s: self});
       return true;
       } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
-    }, $Matrix_orthogonal$ques$93.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$permutation?', $Matrix_permutation$ques$97 = function() {try {
+    $def(self, '$permutation?', function $Matrix_permutation$ques$69() {try {
 
-      var $$98, self = this, cols = nil;
+      var self = this, cols = nil;
 
       
-      if ($truthy(self['$square?']())) {
-      } else {
-        $$($nesting, 'Matrix').$Raise($$($nesting, 'ErrDimensionMismatch'))
+      if (!$truthy(self['$square?']())) {
+        $$('Matrix').$Raise($$('ErrDimensionMismatch'))
       };
-      cols = $$($nesting, 'Array').$new(self.$column_count());
-      $send(self.$rows(), 'each_with_index', [], ($$98 = function(row, i){var self = $$98.$$s == null ? this : $$98.$$s, $$99, found = nil;
+      cols = $$('Array').$new(self.$column_count());
+      $send(self.$rows(), 'each_with_index', [], function $$70(row, i){var found = nil;
 
         
         
-        if (row == null) {
-          row = nil;
-        };
+        if (row == null) row = nil;;
         
-        if (i == null) {
-          i = nil;
-        };
+        if (i == null) i = nil;;
         found = false;
-        $send(row, 'each_with_index', [], ($$99 = function(e, j){var self = $$99.$$s == null ? this : $$99.$$s, $ret_or_21 = nil, $writer = nil;
+        $send(row, 'each_with_index', [], function $$71(e, j){var $writer = nil;
 
           
           
-          if (e == null) {
-            e = nil;
-          };
+          if (e == null) e = nil;;
           
-          if (j == null) {
-            j = nil;
-          };
-          if (e['$=='](1)) {
+          if (j == null) j = nil;;
+          if ($eqeq(e, 1)) {
             
-            if ($truthy((function() {if ($truthy(($ret_or_21 = found))) {
-              return $ret_or_21
-            } else {
-              return cols['$[]'](j)
-            }; return nil; })())) {
-              Opal.ret(false)};
-            return (found = (($writer = [j, true]), $send(cols, '[]=', Opal.to_a($writer)), $writer[$rb_minus($writer["length"], 1)]));
-          } else if ($truthy(e['$!='](0))) {
+            if (($truthy(found) || ($truthy(cols['$[]'](j))))) {
+              Opal.ret(false)
+            };
+            return (found = (($writer = [j, true]), $send(cols, '[]=', $to_a($writer)), $writer[$rb_minus($writer["length"], 1)]));
+          } else if ($neqeq(e, 0)) {
             Opal.ret(false)
           } else {
             return nil
-          };}, $$99.$$s = self, $$99.$$arity = 2, $$99));
+          };}, 2);
         if ($truthy(found)) {
           return nil
         } else {
           Opal.ret(false)
-        };}, $$98.$$s = self, $$98.$$arity = 2, $$98));
+        };}, 2);
       return true;
       } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
-    }, $Matrix_permutation$ques$97.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$real?', $Matrix_real$ques$100 = function() {
+    $def(self, '$real?', function $Matrix_real$ques$72() {
       var self = this;
 
       return $send(self, 'all?', [], "real?".$to_proc())
-    }, $Matrix_real$ques$100.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$regular?', $Matrix_regular$ques$101 = function() {
+    $def(self, '$regular?', function $Matrix_regular$ques$73() {
       var self = this;
 
       return self['$singular?']()['$!']()
-    }, $Matrix_regular$ques$101.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$singular?', $Matrix_singular$ques$102 = function() {
+    $def(self, '$singular?', function $Matrix_singular$ques$74() {
       var self = this;
 
       return self.$determinant()['$=='](0)
-    }, $Matrix_singular$ques$102.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$square?', $Matrix_square$ques$103 = function() {
+    $def(self, '$square?', function $Matrix_square$ques$75() {
       var self = this;
 
       return self.$column_count()['$=='](self.$row_count())
-    }, $Matrix_square$ques$103.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$symmetric?', $Matrix_symmetric$ques$104 = function() {try {
+    $def(self, '$symmetric?', function $Matrix_symmetric$ques$76() {try {
 
-      var $$105, self = this;
+      var self = this;
 
       
-      if ($truthy(self['$square?']())) {
-      } else {
-        $$($nesting, 'Matrix').$Raise($$($nesting, 'ErrDimensionMismatch'))
+      if (!$truthy(self['$square?']())) {
+        $$('Matrix').$Raise($$('ErrDimensionMismatch'))
       };
-      $send(self, 'each_with_index', ["strict_upper"], ($$105 = function(e, row, col){var self = $$105.$$s == null ? this : $$105.$$s;
+      $send(self, 'each_with_index', ["strict_upper"], function $$77(e, row, col){var self = $$77.$$s == null ? this : $$77.$$s;
 
         
         
-        if (e == null) {
-          e = nil;
-        };
+        if (e == null) e = nil;;
         
-        if (row == null) {
-          row = nil;
-        };
+        if (row == null) row = nil;;
         
-        if (col == null) {
-          col = nil;
-        };
-        if ($truthy(e['$!='](self.$rows()['$[]'](col)['$[]'](row)))) {
+        if (col == null) col = nil;;
+        if ($neqeq(e, self.$rows()['$[]'](col)['$[]'](row))) {
           Opal.ret(false)
         } else {
           return nil
-        };}, $$105.$$s = self, $$105.$$arity = 3, $$105));
+        };}, {$$arity: 3, $$s: self});
       return true;
       } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
-    }, $Matrix_symmetric$ques$104.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$antisymmetric?', $Matrix_antisymmetric$ques$106 = function() {try {
+    $def(self, '$antisymmetric?', function $Matrix_antisymmetric$ques$78() {try {
 
-      var $$107, self = this;
+      var self = this;
 
       
-      if ($truthy(self['$square?']())) {
-      } else {
-        $$($nesting, 'Matrix').$Raise($$($nesting, 'ErrDimensionMismatch'))
+      if (!$truthy(self['$square?']())) {
+        $$('Matrix').$Raise($$('ErrDimensionMismatch'))
       };
-      $send(self, 'each_with_index', ["upper"], ($$107 = function(e, row, col){var self = $$107.$$s == null ? this : $$107.$$s;
+      $send(self, 'each_with_index', ["upper"], function $$79(e, row, col){var self = $$79.$$s == null ? this : $$79.$$s;
 
         
         
-        if (e == null) {
-          e = nil;
-        };
+        if (e == null) e = nil;;
         
-        if (row == null) {
-          row = nil;
-        };
+        if (row == null) row = nil;;
         
-        if (col == null) {
-          col = nil;
-        };
-        if (e['$=='](self.$rows()['$[]'](col)['$[]'](row)['$-@']())) {
+        if (col == null) col = nil;;
+        if ($eqeq(e, self.$rows()['$[]'](col)['$[]'](row)['$-@']())) {
           return nil
         } else {
           Opal.ret(false)
-        };}, $$107.$$s = self, $$107.$$arity = 3, $$107));
+        };}, {$$arity: 3, $$s: self});
       return true;
       } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
-    }, $Matrix_antisymmetric$ques$106.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$unitary?', $Matrix_unitary$ques$108 = function() {try {
+    $def(self, '$unitary?', function $Matrix_unitary$ques$80() {try {
 
-      var $$109, self = this;
+      var self = this;
 
       
-      if ($truthy(self['$square?']())) {
-      } else {
-        $$($nesting, 'Matrix').$Raise($$($nesting, 'ErrDimensionMismatch'))
+      if (!$truthy(self['$square?']())) {
+        $$('Matrix').$Raise($$('ErrDimensionMismatch'))
       };
-      $send(self.$rows(), 'each_with_index', [], ($$109 = function(row, i){var self = $$109.$$s == null ? this : $$109.$$s, $$110;
+      $send(self.$rows(), 'each_with_index', [], function $$81(row, i){var self = $$81.$$s == null ? this : $$81.$$s;
 
         
         
-        if (row == null) {
-          row = nil;
-        };
+        if (row == null) row = nil;;
         
-        if (i == null) {
-          i = nil;
-        };
-        return $send(self.$column_count(), 'times', [], ($$110 = function(j){var self = $$110.$$s == null ? this : $$110.$$s, $$111, s = nil;
+        if (i == null) i = nil;;
+        return $send(self.$column_count(), 'times', [], function $$82(j){var self = $$82.$$s == null ? this : $$82.$$s, s = nil;
 
           
           
-          if (j == null) {
-            j = nil;
-          };
+          if (j == null) j = nil;;
           s = 0;
-          $send(self.$row_count(), 'times', [], ($$111 = function(k){var self = $$111.$$s == null ? this : $$111.$$s;
+          $send(self.$row_count(), 'times', [], function $$83(k){var self = $$83.$$s == null ? this : $$83.$$s;
 
             
             
-            if (k == null) {
-              k = nil;
-            };
-            return (s = $rb_plus(s, $rb_times(row['$[]'](k).$conj(), self.$rows()['$[]'](k)['$[]'](j))));}, $$111.$$s = self, $$111.$$arity = 1, $$111));
-          if (s['$==']((function() {if (i['$=='](j)) {
-            return 1
-          } else {
-            return 0
-          }; return nil; })())) {
+            if (k == null) k = nil;;
+            return (s = $rb_plus(s, $rb_times(row['$[]'](k).$conj(), self.$rows()['$[]'](k)['$[]'](j))));}, {$$arity: 1, $$s: self});
+          if ($eqeq(s, ($eqeq(i, j) ? (1) : (0)))) {
             return nil
           } else {
             Opal.ret(false)
-          };}, $$110.$$s = self, $$110.$$arity = 1, $$110));}, $$109.$$s = self, $$109.$$arity = 2, $$109));
+          };}, {$$arity: 1, $$s: self});}, {$$arity: 2, $$s: self});
       return true;
       } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
-    }, $Matrix_unitary$ques$108.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$upper_triangular?', $Matrix_upper_triangular$ques$112 = function() {
+    $def(self, '$upper_triangular?', function $Matrix_upper_triangular$ques$84() {
       var self = this;
 
       return $send(self.$each("strict_lower"), 'all?', [], "zero?".$to_proc())
-    }, $Matrix_upper_triangular$ques$112.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$zero?', $Matrix_zero$ques$113 = function() {
+    $def(self, '$zero?', function $Matrix_zero$ques$85() {
       var self = this;
 
       return $send(self, 'all?', [], "zero?".$to_proc())
-    }, $Matrix_zero$ques$113.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$==', $Matrix_$eq_eq$114 = function(other) {
-      var self = this, $ret_or_22 = nil;
+    $def(self, '$==', function $Matrix_$eq_eq$86(other) {
+      var self = this;
 
       
-      if ($truthy((function() {if ($truthy(($ret_or_22 = $$($nesting, 'Matrix')['$==='](other)))) {
-        return self.$column_count()['$=='](other.$column_count())
-      } else {
-        return $ret_or_22
-      }; return nil; })())) {
-      } else {
+      if (!($eqeqeq($$('Matrix'), other) && ($eqeq(self.$column_count(), other.$column_count())))) {
         return false
       };
       return self.$rows()['$=='](other.$rows());
-    }, $Matrix_$eq_eq$114.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$eql?', $Matrix_eql$ques$115 = function(other) {
-      var self = this, $ret_or_23 = nil;
+    $def(self, '$eql?', function $Matrix_eql$ques$87(other) {
+      var self = this;
 
       
-      if ($truthy((function() {if ($truthy(($ret_or_23 = $$($nesting, 'Matrix')['$==='](other)))) {
-        return self.$column_count()['$=='](other.$column_count())
-      } else {
-        return $ret_or_23
-      }; return nil; })())) {
-      } else {
+      if (!($eqeqeq($$('Matrix'), other) && ($eqeq(self.$column_count(), other.$column_count())))) {
         return false
       };
       return self.$rows()['$eql?'](other.$rows());
-    }, $Matrix_eql$ques$115.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$clone', $Matrix_clone$116 = function $$clone() {
+    $def(self, '$clone', function $$clone() {
       var self = this;
 
       return self.$new_matrix($send(self.rows, 'map', [], "dup".$to_proc()), self.$column_count())
-    }, $Matrix_clone$116.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$hash', $Matrix_hash$117 = function $$hash() {
+    $def(self, '$hash', function $$hash() {
       var self = this;
 
       return self.rows.$hash()
-    }, $Matrix_hash$117.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$*', $Matrix_$$118 = function(m) {
-      var $$119, $$121, self = this, $case = nil, rows = nil, r = nil;
+    $def(self, '$*', function $Matrix_$$88(m) {
+      var self = this, $ret_or_1 = nil, rows = nil, r = nil;
 
-      return (function() {$case = m;
-      if ($$($nesting, 'Numeric')['$===']($case)) {
-      rows = $send(self.rows, 'collect', [], ($$119 = function(row){var self = $$119.$$s == null ? this : $$119.$$s, $$120;
-
-        
+      if ($eqeqeq($$('Numeric'), ($ret_or_1 = m))) {
         
-        if (row == null) {
-          row = nil;
-        };
-        return $send(row, 'collect', [], ($$120 = function(e){var self = $$120.$$s == null ? this : $$120.$$s;
-
+        rows = $send(self.rows, 'collect', [], function $$89(row){
           
           
-          if (e == null) {
-            e = nil;
-          };
-          return $rb_times(e, m);}, $$120.$$s = self, $$120.$$arity = 1, $$120));}, $$119.$$s = self, $$119.$$arity = 1, $$119));
-      return self.$new_matrix(rows, self.$column_count());}
-      else if ($$($nesting, 'Vector')['$===']($case)) {
-      m = self.$class().$column_vector(m);
-      r = $rb_times(self, m);
-      return r.$column(0);}
-      else if ($$($nesting, 'Matrix')['$===']($case)) {
-      if ($truthy(self.$column_count()['$!='](m.$row_count()))) {
-        $$($nesting, 'Matrix').$Raise($$($nesting, 'ErrDimensionMismatch'))};
-      rows = $send($$($nesting, 'Array'), 'new', [self.$row_count()], ($$121 = function(i){var self = $$121.$$s == null ? this : $$121.$$s, $$122;
-
-        
-        
-        if (i == null) {
-          i = nil;
+          if (row == null) row = nil;;
+          return $send(row, 'collect', [], function $$90(e){
+            
+            
+            if (e == null) e = nil;;
+            return $rb_times(e, m);}, 1);}, 1);
+        return self.$new_matrix(rows, self.$column_count());
+      } else if ($eqeqeq($$('Vector'), $ret_or_1)) {
+        
+        m = self.$class().$column_vector(m);
+        r = $rb_times(self, m);
+        return r.$column(0);
+      } else if ($eqeqeq($$('Matrix'), $ret_or_1)) {
+        
+        if ($neqeq(self.$column_count(), m.$row_count())) {
+          $$('Matrix').$Raise($$('ErrDimensionMismatch'))
         };
-        return $send($$($nesting, 'Array'), 'new', [m.$column_count()], ($$122 = function(j){var self = $$122.$$s == null ? this : $$122.$$s, $$123;
+        rows = $send($$('Array'), 'new', [self.$row_count()], function $$91(i){var self = $$91.$$s == null ? this : $$91.$$s;
 
           
           
-          if (j == null) {
-            j = nil;
-          };
-          return $send(Opal.Range.$new(0,self.$column_count(), true), 'inject', [0], ($$123 = function(vij, k){var self = $$123.$$s == null ? this : $$123.$$s;
+          if (i == null) i = nil;;
+          return $send($$('Array'), 'new', [m.$column_count()], function $$92(j){var self = $$92.$$s == null ? this : $$92.$$s;
 
             
             
-            if (vij == null) {
-              vij = nil;
-            };
-            
-            if (k == null) {
-              k = nil;
-            };
-            return $rb_plus(vij, $rb_times(self['$[]'](i, k), m['$[]'](k, j)));}, $$123.$$s = self, $$123.$$arity = 2, $$123));}, $$122.$$s = self, $$122.$$arity = 1, $$122));}, $$121.$$s = self, $$121.$$arity = 1, $$121));
-      return self.$new_matrix(rows, m.$column_count());}
-      else {return self.$apply_through_coercion(m, "*")}})()
-    }, $Matrix_$$118.$$arity = 1);
+            if (j == null) j = nil;;
+            return $send(Opal.Range.$new(0,self.$column_count(), true), 'inject', [0], function $$93(vij, k){var self = $$93.$$s == null ? this : $$93.$$s;
+
+              
+              
+              if (vij == null) vij = nil;;
+              
+              if (k == null) k = nil;;
+              return $rb_plus(vij, $rb_times(self['$[]'](i, k), m['$[]'](k, j)));}, {$$arity: 2, $$s: self});}, {$$arity: 1, $$s: self});}, {$$arity: 1, $$s: self});
+        return self.$new_matrix(rows, m.$column_count());
+      } else {
+        return self.$apply_through_coercion(m, "*")
+      }
+    }, 1);
     
-    Opal.def(self, '$+', $Matrix_$plus$124 = function(m) {
-      var $$125, self = this, $case = nil, $ret_or_24 = nil, rows = nil;
+    $def(self, '$+', function $Matrix_$plus$94(m) {
+      var self = this, $ret_or_1 = nil, rows = nil;
 
       
-      $case = m;
-      if ($$($nesting, 'Numeric')['$===']($case)) {$$($nesting, 'Matrix').$Raise($$($nesting, 'ErrOperationNotDefined'), "+", self.$class(), m.$class())}
-      else if ($$($nesting, 'Vector')['$===']($case)) {m = self.$class().$column_vector(m)}
-      else if ($$($nesting, 'Matrix')['$===']($case)) {nil}
-      else {return self.$apply_through_coercion(m, "+")};
-      if ($truthy((function() {if ($truthy(($ret_or_24 = self.$row_count()['$=='](m.$row_count())))) {
-        return self.$column_count()['$=='](m.$column_count())
-      } else {
-        return $ret_or_24
-      }; return nil; })())) {
-      } else {
-        $$($nesting, 'Matrix').$Raise($$($nesting, 'ErrDimensionMismatch'))
+      if ($eqeqeq($$('Numeric'), ($ret_or_1 = m))) {
+        $$('Matrix').$Raise($$('ErrOperationNotDefined'), "+", self.$class(), m.$class())
+      } else if ($eqeqeq($$('Vector'), $ret_or_1)) {
+        m = self.$class().$column_vector(m)
+      } else if (!$eqeqeq($$('Matrix'), $ret_or_1)) {
+        return self.$apply_through_coercion(m, "+")
       };
-      rows = $send($$($nesting, 'Array'), 'new', [self.$row_count()], ($$125 = function(i){var self = $$125.$$s == null ? this : $$125.$$s, $$126;
+      if (!($eqeq(self.$row_count(), m.$row_count()) && ($eqeq(self.$column_count(), m.$column_count())))) {
+        $$('Matrix').$Raise($$('ErrDimensionMismatch'))
+      };
+      rows = $send($$('Array'), 'new', [self.$row_count()], function $$95(i){var self = $$95.$$s == null ? this : $$95.$$s;
 
         
         
-        if (i == null) {
-          i = nil;
-        };
-        return $send($$($nesting, 'Array'), 'new', [self.$column_count()], ($$126 = function(j){var self = $$126.$$s == null ? this : $$126.$$s;
+        if (i == null) i = nil;;
+        return $send($$('Array'), 'new', [self.$column_count()], function $$96(j){var self = $$96.$$s == null ? this : $$96.$$s;
 
           
           
-          if (j == null) {
-            j = nil;
-          };
-          return $rb_plus(self['$[]'](i, j), m['$[]'](i, j));}, $$126.$$s = self, $$126.$$arity = 1, $$126));}, $$125.$$s = self, $$125.$$arity = 1, $$125));
+          if (j == null) j = nil;;
+          return $rb_plus(self['$[]'](i, j), m['$[]'](i, j));}, {$$arity: 1, $$s: self});}, {$$arity: 1, $$s: self});
       return self.$new_matrix(rows, self.$column_count());
-    }, $Matrix_$plus$124.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$-', $Matrix_$minus$127 = function(m) {
-      var $$128, self = this, $case = nil, $ret_or_25 = nil, rows = nil;
+    $def(self, '$-', function $Matrix_$minus$97(m) {
+      var self = this, $ret_or_1 = nil, rows = nil;
 
       
-      $case = m;
-      if ($$($nesting, 'Numeric')['$===']($case)) {$$($nesting, 'Matrix').$Raise($$($nesting, 'ErrOperationNotDefined'), "-", self.$class(), m.$class())}
-      else if ($$($nesting, 'Vector')['$===']($case)) {m = self.$class().$column_vector(m)}
-      else if ($$($nesting, 'Matrix')['$===']($case)) {nil}
-      else {return self.$apply_through_coercion(m, "-")};
-      if ($truthy((function() {if ($truthy(($ret_or_25 = self.$row_count()['$=='](m.$row_count())))) {
-        return self.$column_count()['$=='](m.$column_count())
-      } else {
-        return $ret_or_25
-      }; return nil; })())) {
-      } else {
-        $$($nesting, 'Matrix').$Raise($$($nesting, 'ErrDimensionMismatch'))
+      if ($eqeqeq($$('Numeric'), ($ret_or_1 = m))) {
+        $$('Matrix').$Raise($$('ErrOperationNotDefined'), "-", self.$class(), m.$class())
+      } else if ($eqeqeq($$('Vector'), $ret_or_1)) {
+        m = self.$class().$column_vector(m)
+      } else if (!$eqeqeq($$('Matrix'), $ret_or_1)) {
+        return self.$apply_through_coercion(m, "-")
+      };
+      if (!($eqeq(self.$row_count(), m.$row_count()) && ($eqeq(self.$column_count(), m.$column_count())))) {
+        $$('Matrix').$Raise($$('ErrDimensionMismatch'))
       };
-      rows = $send($$($nesting, 'Array'), 'new', [self.$row_count()], ($$128 = function(i){var self = $$128.$$s == null ? this : $$128.$$s, $$129;
+      rows = $send($$('Array'), 'new', [self.$row_count()], function $$98(i){var self = $$98.$$s == null ? this : $$98.$$s;
 
         
         
-        if (i == null) {
-          i = nil;
-        };
-        return $send($$($nesting, 'Array'), 'new', [self.$column_count()], ($$129 = function(j){var self = $$129.$$s == null ? this : $$129.$$s;
+        if (i == null) i = nil;;
+        return $send($$('Array'), 'new', [self.$column_count()], function $$99(j){var self = $$99.$$s == null ? this : $$99.$$s;
 
           
           
-          if (j == null) {
-            j = nil;
-          };
-          return $rb_minus(self['$[]'](i, j), m['$[]'](i, j));}, $$129.$$s = self, $$129.$$arity = 1, $$129));}, $$128.$$s = self, $$128.$$arity = 1, $$128));
+          if (j == null) j = nil;;
+          return $rb_minus(self['$[]'](i, j), m['$[]'](i, j));}, {$$arity: 1, $$s: self});}, {$$arity: 1, $$s: self});
       return self.$new_matrix(rows, self.$column_count());
-    }, $Matrix_$minus$127.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$/', $Matrix_$slash$130 = function(other) {
-      var $$131, self = this, $case = nil, rows = nil;
+    $def(self, '$/', function $Matrix_$slash$100(other) {
+      var self = this, $ret_or_1 = nil, rows = nil;
 
-      return (function() {$case = other;
-      if ($$($nesting, 'Numeric')['$===']($case)) {
-      rows = $send(self.rows, 'collect', [], ($$131 = function(row){var self = $$131.$$s == null ? this : $$131.$$s, $$132;
-
-        
+      if ($eqeqeq($$('Numeric'), ($ret_or_1 = other))) {
         
-        if (row == null) {
-          row = nil;
-        };
-        return $send(row, 'collect', [], ($$132 = function(e){var self = $$132.$$s == null ? this : $$132.$$s;
-
+        rows = $send(self.rows, 'collect', [], function $$101(row){
           
           
-          if (e == null) {
-            e = nil;
-          };
-          return $rb_divide(e, other);}, $$132.$$s = self, $$132.$$arity = 1, $$132));}, $$131.$$s = self, $$131.$$arity = 1, $$131));
-      return self.$new_matrix(rows, self.$column_count());}
-      else if ($$($nesting, 'Matrix')['$===']($case)) {return $rb_times(self, other.$inverse())}
-      else {return self.$apply_through_coercion(other, "/")}})()
-    }, $Matrix_$slash$130.$$arity = 1);
+          if (row == null) row = nil;;
+          return $send(row, 'collect', [], function $$102(e){
+            
+            
+            if (e == null) e = nil;;
+            return $rb_divide(e, other);}, 1);}, 1);
+        return self.$new_matrix(rows, self.$column_count());
+      } else if ($eqeqeq($$('Matrix'), $ret_or_1)) {
+        return $rb_times(self, other.$inverse())
+      } else {
+        return self.$apply_through_coercion(other, "/")
+      }
+    }, 1);
     
-    Opal.def(self, '$hadamard_product', $Matrix_hadamard_product$133 = function $$hadamard_product(m) {
-      var $$134, self = this;
-
-      return $send(self, 'combine', [m], ($$134 = function(a, b){var self = $$134.$$s == null ? this : $$134.$$s;
+    $def(self, '$hadamard_product', function $$hadamard_product(m) {
+      var self = this;
 
+      return $send(self, 'combine', [m], function $$103(a, b){
         
         
-        if (a == null) {
-          a = nil;
-        };
+        if (a == null) a = nil;;
         
-        if (b == null) {
-          b = nil;
-        };
-        return $rb_times(a, b);}, $$134.$$s = self, $$134.$$arity = 2, $$134))
-    }, $Matrix_hadamard_product$133.$$arity = 1);
+        if (b == null) b = nil;;
+        return $rb_times(a, b);}, 2)
+    }, 1);
     self.$alias_method("entrywise_product", "hadamard_product");
     
-    Opal.def(self, '$inverse', $Matrix_inverse$135 = function $$inverse() {
+    $def(self, '$inverse', function $$inverse() {
       var self = this;
 
       
-      if ($truthy(self['$square?']())) {
-      } else {
-        $$($nesting, 'Matrix').$Raise($$($nesting, 'ErrDimensionMismatch'))
+      if (!$truthy(self['$square?']())) {
+        $$('Matrix').$Raise($$('ErrDimensionMismatch'))
       };
       return self.$class().$I(self.$row_count()).$send("inverse_from", self);
-    }, $Matrix_inverse$135.$$arity = 0);
+    }, 0);
     $alias(self, "inv", "inverse");
     
-    Opal.def(self, '$inverse_from', $Matrix_inverse_from$136 = function $$inverse_from(src) {
-      var $$137, self = this, last = nil, a = nil;
+    $def(self, '$inverse_from', function $$inverse_from(src) {
+      var self = this, last = nil, a = nil;
 
       
       last = $rb_minus(self.$row_count(), 1);
       a = src.$to_a();
-      $send((0), 'upto', [last], ($$137 = function(k){var self = $$137.$$s == null ? this : $$137.$$s, $$138, $a, $$139, $$142, $$143, i = nil, akk = nil;
+      $send((0), 'upto', [last], function $$104(k){var $a, self = $$104.$$s == null ? this : $$104.$$s, i = nil, akk = nil;
         if (self.rows == null) self.rows = nil;
 
         
         
-        if (k == null) {
-          k = nil;
-        };
+        if (k == null) k = nil;;
         i = k;
         akk = a['$[]'](k)['$[]'](k).$abs();
-        $send($rb_plus(k, 1), 'upto', [last], ($$138 = function(j){var self = $$138.$$s == null ? this : $$138.$$s, v = nil;
+        $send($rb_plus(k, 1), 'upto', [last], function $$105(j){var v = nil;
 
           
           
-          if (j == null) {
-            j = nil;
-          };
+          if (j == null) j = nil;;
           v = a['$[]'](j)['$[]'](k).$abs();
           if ($truthy($rb_gt(v, akk))) {
             
@@ -4034,239 +3340,224 @@ Opal.modules["matrix"] = function(Opal) {
             return (akk = v);
           } else {
             return nil
-          };}, $$138.$$s = self, $$138.$$arity = 1, $$138));
-        if (akk['$=='](0)) {
-          $$($nesting, 'Matrix').$Raise($$($nesting, 'ErrNotRegular'))};
-        if ($truthy(i['$!='](k))) {
+          };}, 1);
+        if ($eqeq(akk, 0)) {
+          $$('Matrix').$Raise($$('ErrNotRegular'))
+        };
+        if ($neqeq(i, k)) {
           
           $a = [a['$[]'](k), a['$[]'](i)], a['$[]='](i, $a[0]), a['$[]='](k, $a[1]), $a;
-          $a = [self.rows['$[]'](k), self.rows['$[]'](i)], self.rows['$[]='](i, $a[0]), self.rows['$[]='](k, $a[1]), $a;};
+          $a = [self.rows['$[]'](k), self.rows['$[]'](i)], self.rows['$[]='](i, $a[0]), self.rows['$[]='](k, $a[1]), $a;
+        };
         akk = a['$[]'](k)['$[]'](k);
-        $send((0), 'upto', [last], ($$139 = function(ii){var self = $$139.$$s == null ? this : $$139.$$s, $$140, $$141, q = nil, $writer = nil;
+        $send((0), 'upto', [last], function $$106(ii){var self = $$106.$$s == null ? this : $$106.$$s, q = nil, $writer = nil;
 
           
           
-          if (ii == null) {
-            ii = nil;
+          if (ii == null) ii = nil;;
+          if ($eqeq(ii, k)) {
+            return nil;
           };
-          if (ii['$=='](k)) {
-            return nil;};
           q = a['$[]'](ii)['$[]'](k).$quo(akk);
           
           $writer = [k, 0];
-          $send(a['$[]'](ii), '[]=', Opal.to_a($writer));
+          $send(a['$[]'](ii), '[]=', $to_a($writer));
           $writer[$rb_minus($writer["length"], 1)];;
-          $send($rb_plus(k, 1), 'upto', [last], ($$140 = function(j){var self = $$140.$$s == null ? this : $$140.$$s, $binary_op_recvr_tmp_1 = nil;
+          $send($rb_plus(k, 1), 'upto', [last], function $$107(j){var $binary_op_recvr_tmp_1 = nil;
 
             
             
-            if (j == null) {
-              j = nil;
-            };
+            if (j == null) j = nil;;
             $binary_op_recvr_tmp_1 = a['$[]'](ii);
             
             $writer = [j, $rb_minus($binary_op_recvr_tmp_1['$[]'](j), $rb_times(a['$[]'](k)['$[]'](j), q))];
-            $send($binary_op_recvr_tmp_1, '[]=', Opal.to_a($writer));
-            return $writer[$rb_minus($writer["length"], 1)];;}, $$140.$$s = self, $$140.$$arity = 1, $$140));
-          return $send((0), 'upto', [last], ($$141 = function(j){var self = $$141.$$s == null ? this : $$141.$$s, $binary_op_recvr_tmp_2 = nil;
+            $send($binary_op_recvr_tmp_1, '[]=', $to_a($writer));
+            return $writer[$rb_minus($writer["length"], 1)];;}, 1);
+          return $send((0), 'upto', [last], function $$108(j){var self = $$108.$$s == null ? this : $$108.$$s, $binary_op_recvr_tmp_2 = nil;
             if (self.rows == null) self.rows = nil;
 
             
             
-            if (j == null) {
-              j = nil;
-            };
+            if (j == null) j = nil;;
             $binary_op_recvr_tmp_2 = self.rows['$[]'](ii);
             
             $writer = [j, $rb_minus($binary_op_recvr_tmp_2['$[]'](j), $rb_times(self.rows['$[]'](k)['$[]'](j), q))];
-            $send($binary_op_recvr_tmp_2, '[]=', Opal.to_a($writer));
-            return $writer[$rb_minus($writer["length"], 1)];;}, $$141.$$s = self, $$141.$$arity = 1, $$141));}, $$139.$$s = self, $$139.$$arity = 1, $$139));
-        $send($rb_plus(k, 1), 'upto', [last], ($$142 = function(j){var self = $$142.$$s == null ? this : $$142.$$s, $writer = nil;
+            $send($binary_op_recvr_tmp_2, '[]=', $to_a($writer));
+            return $writer[$rb_minus($writer["length"], 1)];;}, {$$arity: 1, $$s: self});}, {$$arity: 1, $$s: self});
+        $send($rb_plus(k, 1), 'upto', [last], function $$109(j){var $writer = nil;
 
           
           
-          if (j == null) {
-            j = nil;
-          };
+          if (j == null) j = nil;;
           $writer = [j, a['$[]'](k)['$[]'](j).$quo(akk)];
-          $send(a['$[]'](k), '[]=', Opal.to_a($writer));
-          return $writer[$rb_minus($writer["length"], 1)];}, $$142.$$s = self, $$142.$$arity = 1, $$142));
-        return $send((0), 'upto', [last], ($$143 = function(j){var self = $$143.$$s == null ? this : $$143.$$s, $writer = nil;
+          $send(a['$[]'](k), '[]=', $to_a($writer));
+          return $writer[$rb_minus($writer["length"], 1)];}, 1);
+        return $send((0), 'upto', [last], function $$110(j){var self = $$110.$$s == null ? this : $$110.$$s, $writer = nil;
           if (self.rows == null) self.rows = nil;
 
           
           
-          if (j == null) {
-            j = nil;
-          };
+          if (j == null) j = nil;;
           $writer = [j, self.rows['$[]'](k)['$[]'](j).$quo(akk)];
-          $send(self.rows['$[]'](k), '[]=', Opal.to_a($writer));
-          return $writer[$rb_minus($writer["length"], 1)];}, $$143.$$s = self, $$143.$$arity = 1, $$143));}, $$137.$$s = self, $$137.$$arity = 1, $$137));
+          $send(self.rows['$[]'](k), '[]=', $to_a($writer));
+          return $writer[$rb_minus($writer["length"], 1)];}, {$$arity: 1, $$s: self});}, {$$arity: 1, $$s: self});
       return self;
-    }, $Matrix_inverse_from$136.$$arity = 1);
+    }, 1);
     self.$private("inverse_from");
     
-    Opal.def(self, '$**', $Matrix_$$$144 = function(other) {try {
+    $def(self, '$**', function $Matrix_$$$111(other) {try {
 
-      var $$145, $a, $b, $$146, self = this, $case = nil, x = nil, z = nil, v = nil, d = nil, v_inv = nil;
-
-      return (function() {$case = other;
-      if ($$($nesting, 'Integer')['$===']($case)) {
-      x = self;
-      if ($truthy($rb_le(other, 0))) {
-        
-        x = self.$inverse();
-        if (other['$=='](0)) {
-          return self.$class().$identity(self.$column_count())};
-        other = other['$-@']();};
-      z = nil;
-      return $send(self, 'loop', [], ($$145 = function(){var self = $$145.$$s == null ? this : $$145.$$s;
+      var $a, $b, self = this, $ret_or_1 = nil, x = nil, z = nil, v = nil, d = nil, v_inv = nil;
 
+      if ($eqeqeq($$('Integer'), ($ret_or_1 = other))) {
         
-        if (other['$[]'](0)['$=='](1)) {
-          z = (function() {if ($truthy(z)) {
-            return $rb_times(z, x)
-          } else {
-            return x
-          }; return nil; })()};
-        if ($truthy((other = other['$>>'](1))['$zero?']())) {
-          Opal.ret(z)};
-        return (x = $rb_times(x, x));}, $$145.$$s = self, $$145.$$arity = 0, $$145));}
-      else if ($$($nesting, 'Numeric')['$===']($case)) {
-      $b = self.$eigensystem(), $a = Opal.to_ary($b), (v = ($a[0] == null ? nil : $a[0])), (d = ($a[1] == null ? nil : $a[1])), (v_inv = ($a[2] == null ? nil : $a[2])), $b;
-      return $rb_times($rb_times(v, $send(self.$class(), 'diagonal', Opal.to_a($send(d.$each("diagonal"), 'map', [], ($$146 = function(e){var self = $$146.$$s == null ? this : $$146.$$s;
-
-        
-        
-        if (e == null) {
-          e = nil;
+        x = self;
+        if ($truthy($rb_le(other, 0))) {
+          
+          x = self.$inverse();
+          if ($eqeq(other, 0)) {
+            return self.$class().$identity(self.$column_count())
+          };
+          other = other['$-@']();
         };
-        return e['$**'](other);}, $$146.$$s = self, $$146.$$arity = 1, $$146))))), v_inv);}
-      else {return $$($nesting, 'Matrix').$Raise($$($nesting, 'ErrOperationNotDefined'), "**", self.$class(), other.$class())}})()
+        z = nil;
+        return $send(self, 'loop', [], function $$112(){
+          
+          if ($eqeq(other['$[]'](0), 1)) {
+            z = ($truthy(z) ? ($rb_times(z, x)) : (x))
+          };
+          if ($truthy((other = other['$>>'](1))['$zero?']())) {
+            Opal.ret(z)
+          };
+          return (x = $rb_times(x, x));}, 0);
+      } else if ($eqeqeq($$('Numeric'), $ret_or_1)) {
+        
+        $b = self.$eigensystem(), $a = $to_ary($b), (v = ($a[0] == null ? nil : $a[0])), (d = ($a[1] == null ? nil : $a[1])), (v_inv = ($a[2] == null ? nil : $a[2])), $b;
+        return $rb_times($rb_times(v, $send(self.$class(), 'diagonal', $to_a($send(d.$each("diagonal"), 'map', [], function $$113(e){
+          
+          
+          if (e == null) e = nil;;
+          return e['$**'](other);}, 1)))), v_inv);
+      } else {
+        return $$('Matrix').$Raise($$('ErrOperationNotDefined'), "**", self.$class(), other.$class())
+      }
       } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
-    }, $Matrix_$$$144.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$+@', $Matrix_$plus$$147 = function() {
+    $def(self, '$+@', function $Matrix_$plus$$114() {
       var self = this;
 
       return self
-    }, $Matrix_$plus$$147.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$-@', $Matrix_$minus$$148 = function() {
-      var $$149, self = this;
-
-      return $send(self, 'collect', [], ($$149 = function(e){var self = $$149.$$s == null ? this : $$149.$$s;
+    $def(self, '$-@', function $Matrix_$minus$$115() {
+      var self = this;
 
+      return $send(self, 'collect', [], function $$116(e){
         
         
-        if (e == null) {
-          e = nil;
-        };
-        return e['$-@']();}, $$149.$$s = self, $$149.$$arity = 1, $$149))
-    }, $Matrix_$minus$$148.$$arity = 0);
+        if (e == null) e = nil;;
+        return e['$-@']();}, 1)
+    }, 0);
     
-    Opal.def(self, '$determinant', $Matrix_determinant$150 = function $$determinant() {
-      var $a, $b, self = this, m = nil, $case = nil, m0 = nil, m1 = nil, m2 = nil, m3 = nil;
+    $def(self, '$determinant', function $$determinant() {
+      var $a, $b, self = this, m = nil, $ret_or_1 = nil, m0 = nil, m1 = nil, m2 = nil, m3 = nil;
 
       
-      if ($truthy(self['$square?']())) {
-      } else {
-        $$($nesting, 'Matrix').$Raise($$($nesting, 'ErrDimensionMismatch'))
+      if (!$truthy(self['$square?']())) {
+        $$('Matrix').$Raise($$('ErrDimensionMismatch'))
       };
       m = self.rows;
-      return (function() {$case = self.$row_count();
-      if ((0)['$===']($case)) {return 1}
-      else if ((1)['$===']($case)) {return m['$[]'](0)['$[]'](0)['$+@']()}
-      else if ((2)['$===']($case)) {return $rb_minus($rb_times(m['$[]'](0)['$[]'](0)['$+@'](), m['$[]'](1)['$[]'](1)), $rb_times(m['$[]'](0)['$[]'](1), m['$[]'](1)['$[]'](0)))}
-      else if ((3)['$===']($case)) {
-      $b = m, $a = Opal.to_ary($b), (m0 = ($a[0] == null ? nil : $a[0])), (m1 = ($a[1] == null ? nil : $a[1])), (m2 = ($a[2] == null ? nil : $a[2])), $b;
-      return $rb_minus($rb_plus($rb_plus($rb_minus($rb_minus($rb_times($rb_times(m0['$[]'](0)['$+@'](), m1['$[]'](1)), m2['$[]'](2)), $rb_times($rb_times(m0['$[]'](0), m1['$[]'](2)), m2['$[]'](1))), $rb_times($rb_times(m0['$[]'](1), m1['$[]'](0)), m2['$[]'](2))), $rb_times($rb_times(m0['$[]'](1), m1['$[]'](2)), m2['$[]'](0))), $rb_times($rb_times(m0['$[]'](2), m1['$[]'](0)), m2['$[]'](1))), $rb_times($rb_times(m0['$[]'](2), m1['$[]'](1)), m2['$[]'](0)));}
-      else if ((4)['$===']($case)) {
-      $b = m, $a = Opal.to_ary($b), (m0 = ($a[0] == null ? nil : $a[0])), (m1 = ($a[1] == null ? nil : $a[1])), (m2 = ($a[2] == null ? nil : $a[2])), (m3 = ($a[3] == null ? nil : $a[3])), $b;
-      return $rb_plus($rb_minus($rb_minus($rb_plus($rb_plus($rb_minus($rb_minus($rb_plus($rb_plus($rb_minus($rb_minus($rb_plus($rb_plus($rb_minus($rb_minus($rb_plus($rb_plus($rb_minus($rb_minus($rb_plus($rb_plus($rb_minus($rb_minus($rb_times($rb_times($rb_times(m0['$[]'](0)['$+@'](), m1['$[]'](1)), m2['$[]'](2)), m3['$[]'](3)), $rb_times($rb_times($rb_times(m0['$[]'](0), m1['$[]'](1)), m2['$[]'](3)), m3['$[]'](2))), $rb_times($rb_times($rb_times(m0['$[]'](0), m1['$[]'](2)), m2['$[]'](1)), m3['$[]'](3))), $rb_times($rb_times($rb_times(m0['$[]'](0), m1['$[]'](2)), m2['$[]'](3)), m3['$[]'](1))), $rb_times($rb_times($rb_times(m0['$[]'](0), m1['$[]'](3)), m2['$[]'](1)), m3['$[]'](2))), $rb_times($rb_times($rb_times(m0['$[]'](0), m1['$[]'](3)), m2['$[]'](2)), m3['$[]'](1))), $rb_times($rb_times($rb_times(m0['$[]'](1), m1['$[]'](0)), m2['$[]'](2)), m3['$[]'](3))), $rb_times($rb_times($rb_times(m0['$[]'](1), m1['$[]'](0)), m2['$[]'](3)), m3['$[]'](2))), $rb_times($rb_times($rb_times(m0['$[]'](1), m1['$[]'](2)), m2['$[]'](0)), m3['$[]'](3))), $rb_times($rb_times($rb_times(m0['$[]'](1), m1['$[]'](2)), m2['$[]'](3)), m3['$[]'](0))), $rb_times($rb_times($rb_times(m0['$[]'](1), m1['$[]'](3)), m2['$[]'](0)), m3['$[]'](2))), $rb_times($rb_times($rb_times(m0['$[]'](1), m1['$[]'](3)), m2['$[]'](2)), m3['$[]'](0))), $rb_times($rb_times($rb_times(m0['$[]'](2), m1['$[]'](0)), m2['$[]'](1)), m3['$[]'](3))), $rb_times($rb_times($rb_times(m0['$[]'](2), m1['$[]'](0)), m2['$[]'](3)), m3['$[]'](1))), $rb_times($rb_times($rb_times(m0['$[]'](2), m1['$[]'](1)), m2['$[]'](0)), m3['$[]'](3))), $rb_times($rb_times($rb_times(m0['$[]'](2), m1['$[]'](1)), m2['$[]'](3)), m3['$[]'](0))), $rb_times($rb_times($rb_times(m0['$[]'](2), m1['$[]'](3)), m2['$[]'](0)), m3['$[]'](1))), $rb_times($rb_times($rb_times(m0['$[]'](2), m1['$[]'](3)), m2['$[]'](1)), m3['$[]'](0))), $rb_times($rb_times($rb_times(m0['$[]'](3), m1['$[]'](0)), m2['$[]'](1)), m3['$[]'](2))), $rb_times($rb_times($rb_times(m0['$[]'](3), m1['$[]'](0)), m2['$[]'](2)), m3['$[]'](1))), $rb_times($rb_times($rb_times(m0['$[]'](3), m1['$[]'](1)), m2['$[]'](0)), m3['$[]'](2))), $rb_times($rb_times($rb_times(m0['$[]'](3), m1['$[]'](1)), m2['$[]'](2)), m3['$[]'](0))), $rb_times($rb_times($rb_times(m0['$[]'](3), m1['$[]'](2)), m2['$[]'](0)), m3['$[]'](1))), $rb_times($rb_times($rb_times(m0['$[]'](3), m1['$[]'](2)), m2['$[]'](1)), m3['$[]'](0)));}
-      else {return self.$determinant_bareiss()}})();
-    }, $Matrix_determinant$150.$$arity = 0);
+      if ($eqeqeq(0, ($ret_or_1 = self.$row_count()))) {
+        return 1
+      } else if ($eqeqeq(1, $ret_or_1)) {
+        return m['$[]'](0)['$[]'](0)['$+@']()
+      } else if ($eqeqeq(2, $ret_or_1)) {
+        return $rb_minus($rb_times(m['$[]'](0)['$[]'](0)['$+@'](), m['$[]'](1)['$[]'](1)), $rb_times(m['$[]'](0)['$[]'](1), m['$[]'](1)['$[]'](0)))
+      } else if ($eqeqeq(3, $ret_or_1)) {
+        
+        $b = m, $a = $to_ary($b), (m0 = ($a[0] == null ? nil : $a[0])), (m1 = ($a[1] == null ? nil : $a[1])), (m2 = ($a[2] == null ? nil : $a[2])), $b;
+        return $rb_minus($rb_plus($rb_plus($rb_minus($rb_minus($rb_times($rb_times(m0['$[]'](0)['$+@'](), m1['$[]'](1)), m2['$[]'](2)), $rb_times($rb_times(m0['$[]'](0), m1['$[]'](2)), m2['$[]'](1))), $rb_times($rb_times(m0['$[]'](1), m1['$[]'](0)), m2['$[]'](2))), $rb_times($rb_times(m0['$[]'](1), m1['$[]'](2)), m2['$[]'](0))), $rb_times($rb_times(m0['$[]'](2), m1['$[]'](0)), m2['$[]'](1))), $rb_times($rb_times(m0['$[]'](2), m1['$[]'](1)), m2['$[]'](0)));
+      } else if ($eqeqeq(4, $ret_or_1)) {
+        
+        $b = m, $a = $to_ary($b), (m0 = ($a[0] == null ? nil : $a[0])), (m1 = ($a[1] == null ? nil : $a[1])), (m2 = ($a[2] == null ? nil : $a[2])), (m3 = ($a[3] == null ? nil : $a[3])), $b;
+        return $rb_plus($rb_minus($rb_minus($rb_plus($rb_plus($rb_minus($rb_minus($rb_plus($rb_plus($rb_minus($rb_minus($rb_plus($rb_plus($rb_minus($rb_minus($rb_plus($rb_plus($rb_minus($rb_minus($rb_plus($rb_plus($rb_minus($rb_minus($rb_times($rb_times($rb_times(m0['$[]'](0)['$+@'](), m1['$[]'](1)), m2['$[]'](2)), m3['$[]'](3)), $rb_times($rb_times($rb_times(m0['$[]'](0), m1['$[]'](1)), m2['$[]'](3)), m3['$[]'](2))), $rb_times($rb_times($rb_times(m0['$[]'](0), m1['$[]'](2)), m2['$[]'](1)), m3['$[]'](3))), $rb_times($rb_times($rb_times(m0['$[]'](0), m1['$[]'](2)), m2['$[]'](3)), m3['$[]'](1))), $rb_times($rb_times($rb_times(m0['$[]'](0), m1['$[]'](3)), m2['$[]'](1)), m3['$[]'](2))), $rb_times($rb_times($rb_times(m0['$[]'](0), m1['$[]'](3)), m2['$[]'](2)), m3['$[]'](1))), $rb_times($rb_times($rb_times(m0['$[]'](1), m1['$[]'](0)), m2['$[]'](2)), m3['$[]'](3))), $rb_times($rb_times($rb_times(m0['$[]'](1), m1['$[]'](0)), m2['$[]'](3)), m3['$[]'](2))), $rb_times($rb_times($rb_times(m0['$[]'](1), m1['$[]'](2)), m2['$[]'](0)), m3['$[]'](3))), $rb_times($rb_times($rb_times(m0['$[]'](1), m1['$[]'](2)), m2['$[]'](3)), m3['$[]'](0))), $rb_times($rb_times($rb_times(m0['$[]'](1), m1['$[]'](3)), m2['$[]'](0)), m3['$[]'](2))), $rb_times($rb_times($rb_times(m0['$[]'](1), m1['$[]'](3)), m2['$[]'](2)), m3['$[]'](0))), $rb_times($rb_times($rb_times(m0['$[]'](2), m1['$[]'](0)), m2['$[]'](1)), m3['$[]'](3))), $rb_times($rb_times($rb_times(m0['$[]'](2), m1['$[]'](0)), m2['$[]'](3)), m3['$[]'](1))), $rb_times($rb_times($rb_times(m0['$[]'](2), m1['$[]'](1)), m2['$[]'](0)), m3['$[]'](3))), $rb_times($rb_times($rb_times(m0['$[]'](2), m1['$[]'](1)), m2['$[]'](3)), m3['$[]'](0))), $rb_times($rb_times($rb_times(m0['$[]'](2), m1['$[]'](3)), m2['$[]'](0)), m3['$[]'](1))), $rb_times($rb_times($rb_times(m0['$[]'](2), m1['$[]'](3)), m2['$[]'](1)), m3['$[]'](0))), $rb_times($rb_times($rb_times(m0['$[]'](3), m1['$[]'](0)), m2['$[]'](1)), m3['$[]'](2))), $rb_times($rb_times($rb_times(m0['$[]'](3), m1['$[]'](0)), m2['$[]'](2)), m3['$[]'](1))), $rb_times($rb_times($rb_times(m0['$[]'](3), m1['$[]'](1)), m2['$[]'](0)), m3['$[]'](2))), $rb_times($rb_times($rb_times(m0['$[]'](3), m1['$[]'](1)), m2['$[]'](2)), m3['$[]'](0))), $rb_times($rb_times($rb_times(m0['$[]'](3), m1['$[]'](2)), m2['$[]'](0)), m3['$[]'](1))), $rb_times($rb_times($rb_times(m0['$[]'](3), m1['$[]'](2)), m2['$[]'](1)), m3['$[]'](0)));
+      } else {
+        return self.$determinant_bareiss()
+      };
+    }, 0);
     self.$alias_method("det", "determinant");
     
-    Opal.def(self, '$determinant_bareiss', $Matrix_determinant_bareiss$151 = function $$determinant_bareiss() {try {
+    $def(self, '$determinant_bareiss', function $$determinant_bareiss() {try {
 
-      var $$152, $$153, self = this, size = nil, last = nil, a = nil, no_pivot = nil, sign = nil, pivot = nil;
+      var self = this, size = nil, last = nil, a = nil, no_pivot = nil, sign = nil, pivot = nil;
 
       
       size = self.$row_count();
       last = $rb_minus(size, 1);
       a = self.$to_a();
-      no_pivot = $send($$($nesting, 'Proc'), 'new', [], ($$152 = function(){var self = $$152.$$s == null ? this : $$152.$$s;
-
-        Opal.ret(0)}, $$152.$$s = self, $$152.$$arity = 0, $$152));
+      no_pivot = $send($$('Proc'), 'new', [], function $$117(){
+        Opal.ret(0)}, 0);
       sign = 1;
       pivot = 1;
-      $send(size, 'times', [], ($$153 = function(k){var self = $$153.$$s == null ? this : $$153.$$s, $$154, $a, $$155, previous_pivot = nil, switch$ = nil;
+      $send(size, 'times', [], function $$118(k){var $a, previous_pivot = nil, switch$ = nil;
 
         
         
-        if (k == null) {
-          k = nil;
-        };
+        if (k == null) k = nil;;
         previous_pivot = pivot;
-        if ((pivot = a['$[]'](k)['$[]'](k))['$=='](0)) {
+        if ($eqeq((pivot = a['$[]'](k)['$[]'](k)), 0)) {
           
-          switch$ = $send(Opal.Range.$new($rb_plus(k, 1),size, true), 'find', [no_pivot], ($$154 = function(row){var self = $$154.$$s == null ? this : $$154.$$s;
-
+          switch$ = $send(Opal.Range.$new($rb_plus(k, 1),size, true), 'find', [no_pivot], function $$119(row){
             
             
-            if (row == null) {
-              row = nil;
-            };
-            return a['$[]'](row)['$[]'](k)['$!='](0);}, $$154.$$s = self, $$154.$$arity = 1, $$154));
+            if (row == null) row = nil;;
+            return a['$[]'](row)['$[]'](k)['$!='](0);}, 1);
           $a = [a['$[]'](k), a['$[]'](switch$)], a['$[]='](switch$, $a[0]), a['$[]='](k, $a[1]), $a;
           pivot = a['$[]'](k)['$[]'](k);
-          sign = sign['$-@']();};
-        return $send($rb_plus(k, 1), 'upto', [last], ($$155 = function(i){var self = $$155.$$s == null ? this : $$155.$$s, $$156, ai = nil;
+          sign = sign['$-@']();
+        };
+        return $send($rb_plus(k, 1), 'upto', [last], function $$120(i){var ai = nil;
 
           
           
-          if (i == null) {
-            i = nil;
-          };
+          if (i == null) i = nil;;
           ai = a['$[]'](i);
-          return $send($rb_plus(k, 1), 'upto', [last], ($$156 = function(j){var self = $$156.$$s == null ? this : $$156.$$s, $writer = nil;
+          return $send($rb_plus(k, 1), 'upto', [last], function $$121(j){var $writer = nil;
 
             
             
-            if (j == null) {
-              j = nil;
-            };
+            if (j == null) j = nil;;
             $writer = [j, $rb_divide($rb_minus($rb_times(pivot, ai['$[]'](j)), $rb_times(ai['$[]'](k), a['$[]'](k)['$[]'](j))), previous_pivot)];
-            $send(ai, '[]=', Opal.to_a($writer));
-            return $writer[$rb_minus($writer["length"], 1)];}, $$156.$$s = self, $$156.$$arity = 1, $$156));}, $$155.$$s = self, $$155.$$arity = 1, $$155));}, $$153.$$s = self, $$153.$$arity = 1, $$153));
+            $send(ai, '[]=', $to_a($writer));
+            return $writer[$rb_minus($writer["length"], 1)];}, 1);}, 1);}, 1);
       return $rb_times(sign, pivot);
       } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
-    }, $Matrix_determinant_bareiss$151.$$arity = 0);
+    }, 0);
     self.$private("determinant_bareiss");
     
-    Opal.def(self, '$determinant_e', $Matrix_determinant_e$157 = function $$determinant_e() {
+    $def(self, '$determinant_e', function $$determinant_e() {
       var self = this;
 
       
       self.$warn("Matrix#determinant_e is deprecated; use #determinant", $hash2(["uplevel"], {"uplevel": 1}));
       return self.$determinant();
-    }, $Matrix_determinant_e$157.$$arity = 0);
+    }, 0);
     $alias(self, "det_e", "determinant_e");
     
-    Opal.def(self, '$hstack', $Matrix_hstack$158 = function $$hstack($a) {
+    $def(self, '$hstack', function $$hstack($a) {
       var $post_args, matrices, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       matrices = $post_args;;
-      return $send(self.$class(), 'hstack', [self].concat(Opal.to_a(matrices)));
-    }, $Matrix_hstack$158.$$arity = -1);
+      return $send(self.$class(), 'hstack', [self].concat($to_a(matrices)));
+    }, -1);
     
-    Opal.def(self, '$rank', $Matrix_rank$159 = function $$rank() {
-      var $$160, self = this, a = nil, last_column = nil, last_row = nil, pivot_row = nil, previous_pivot = nil;
+    $def(self, '$rank', function $$rank() {
+      var self = this, a = nil, last_column = nil, last_row = nil, pivot_row = nil, previous_pivot = nil;
 
       
       a = self.$to_a();
@@ -4274,261 +3565,234 @@ Opal.modules["matrix"] = function(Opal) {
       last_row = $rb_minus(self.$row_count(), 1);
       pivot_row = 0;
       previous_pivot = 1;
-      $send((0), 'upto', [last_column], ($$160 = function(k){var self = $$160.$$s == null ? this : $$160.$$s, $$161, $a, $$162, switch_row = nil, pivot = nil;
+      $send((0), 'upto', [last_column], function $$122(k){var $a, switch_row = nil, pivot = nil;
 
         
         
-        if (k == null) {
-          k = nil;
-        };
-        switch_row = $send(Opal.Range.$new(pivot_row, last_row, false), 'find', [], ($$161 = function(row){var self = $$161.$$s == null ? this : $$161.$$s;
-
+        if (k == null) k = nil;;
+        switch_row = $send(Opal.Range.$new(pivot_row, last_row, false), 'find', [], function $$123(row){
           
           
-          if (row == null) {
-            row = nil;
-          };
-          return a['$[]'](row)['$[]'](k)['$!='](0);}, $$161.$$s = self, $$161.$$arity = 1, $$161));
+          if (row == null) row = nil;;
+          return a['$[]'](row)['$[]'](k)['$!='](0);}, 1);
         if ($truthy(switch_row)) {
           
-          if (pivot_row['$=='](switch_row)) {
-          } else {
+          if (!$eqeq(pivot_row, switch_row)) {
             $a = [a['$[]'](pivot_row), a['$[]'](switch_row)], a['$[]='](switch_row, $a[0]), a['$[]='](pivot_row, $a[1]), $a
           };
           pivot = a['$[]'](pivot_row)['$[]'](k);
-          $send($rb_plus(pivot_row, 1), 'upto', [last_row], ($$162 = function(i){var self = $$162.$$s == null ? this : $$162.$$s, $$163, ai = nil;
+          $send($rb_plus(pivot_row, 1), 'upto', [last_row], function $$124(i){var ai = nil;
 
             
             
-            if (i == null) {
-              i = nil;
-            };
+            if (i == null) i = nil;;
             ai = a['$[]'](i);
-            return $send($rb_plus(k, 1), 'upto', [last_column], ($$163 = function(j){var self = $$163.$$s == null ? this : $$163.$$s, $writer = nil;
+            return $send($rb_plus(k, 1), 'upto', [last_column], function $$125(j){var $writer = nil;
 
               
               
-              if (j == null) {
-                j = nil;
-              };
+              if (j == null) j = nil;;
               $writer = [j, $rb_divide($rb_minus($rb_times(pivot, ai['$[]'](j)), $rb_times(ai['$[]'](k), a['$[]'](pivot_row)['$[]'](j))), previous_pivot)];
-              $send(ai, '[]=', Opal.to_a($writer));
-              return $writer[$rb_minus($writer["length"], 1)];}, $$163.$$s = self, $$163.$$arity = 1, $$163));}, $$162.$$s = self, $$162.$$arity = 1, $$162));
+              $send(ai, '[]=', $to_a($writer));
+              return $writer[$rb_minus($writer["length"], 1)];}, 1);}, 1);
           pivot_row = $rb_plus(pivot_row, 1);
           return (previous_pivot = pivot);
         } else {
           return nil
-        };}, $$160.$$s = self, $$160.$$arity = 1, $$160));
+        };}, 1);
       return pivot_row;
-    }, $Matrix_rank$159.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$rank_e', $Matrix_rank_e$164 = function $$rank_e() {
+    $def(self, '$rank_e', function $$rank_e() {
       var self = this;
 
       
       self.$warn("Matrix#rank_e is deprecated; use #rank", $hash2(["uplevel"], {"uplevel": 1}));
       return self.$rank();
-    }, $Matrix_rank_e$164.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$round', $Matrix_round$165 = function $$round(ndigits) {
-      var $$166, self = this;
+    $def(self, '$round', function $$round(ndigits) {
+      var self = this;
 
       
       
-      if (ndigits == null) {
-        ndigits = 0;
-      };
-      return $send(self, 'map', [], ($$166 = function(e){var self = $$166.$$s == null ? this : $$166.$$s;
-
+      if (ndigits == null) ndigits = 0;;
+      return $send(self, 'map', [], function $$126(e){
         
         
-        if (e == null) {
-          e = nil;
-        };
-        return e.$round(ndigits);}, $$166.$$s = self, $$166.$$arity = 1, $$166));
-    }, $Matrix_round$165.$$arity = -1);
+        if (e == null) e = nil;;
+        return e.$round(ndigits);}, 1);
+    }, -1);
     
-    Opal.def(self, '$trace', $Matrix_trace$167 = function $$trace() {
-      var $$168, self = this;
+    $def(self, '$trace', function $$trace() {
+      var self = this;
 
       
-      if ($truthy(self['$square?']())) {
-      } else {
-        $$($nesting, 'Matrix').$Raise($$($nesting, 'ErrDimensionMismatch'))
+      if (!$truthy(self['$square?']())) {
+        $$('Matrix').$Raise($$('ErrDimensionMismatch'))
       };
-      return $send(Opal.Range.$new(0,self.$column_count(), true), 'inject', [0], ($$168 = function(tr, i){var self = $$168.$$s == null ? this : $$168.$$s;
+      return $send(Opal.Range.$new(0,self.$column_count(), true), 'inject', [0], function $$127(tr, i){var self = $$127.$$s == null ? this : $$127.$$s;
         if (self.rows == null) self.rows = nil;
 
         
         
-        if (tr == null) {
-          tr = nil;
-        };
+        if (tr == null) tr = nil;;
         
-        if (i == null) {
-          i = nil;
-        };
-        return $rb_plus(tr, self.rows['$[]'](i)['$[]'](i));}, $$168.$$s = self, $$168.$$arity = 2, $$168));
-    }, $Matrix_trace$167.$$arity = 0);
+        if (i == null) i = nil;;
+        return $rb_plus(tr, self.rows['$[]'](i)['$[]'](i));}, {$$arity: 2, $$s: self});
+    }, 0);
     $alias(self, "tr", "trace");
     
-    Opal.def(self, '$transpose', $Matrix_transpose$169 = function $$transpose() {
+    $def(self, '$transpose', function $$transpose() {
       var self = this;
 
       
       if ($truthy(self.$row_count()['$zero?']())) {
-        return self.$class().$empty(self.$column_count(), 0)};
+        return self.$class().$empty(self.$column_count(), 0)
+      };
       return self.$new_matrix(self.rows.$transpose(), self.$row_count());
-    }, $Matrix_transpose$169.$$arity = 0);
+    }, 0);
     $alias(self, "t", "transpose");
     
-    Opal.def(self, '$vstack', $Matrix_vstack$170 = function $$vstack($a) {
+    $def(self, '$vstack', function $$vstack($a) {
       var $post_args, matrices, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       matrices = $post_args;;
-      return $send(self.$class(), 'vstack', [self].concat(Opal.to_a(matrices)));
-    }, $Matrix_vstack$170.$$arity = -1);
+      return $send(self.$class(), 'vstack', [self].concat($to_a(matrices)));
+    }, -1);
     
-    Opal.def(self, '$eigensystem', $Matrix_eigensystem$171 = function $$eigensystem() {
+    $def(self, '$eigensystem', function $$eigensystem() {
       var self = this;
 
-      return $$($nesting, 'EigenvalueDecomposition').$new(self)
-    }, $Matrix_eigensystem$171.$$arity = 0);
+      return $$('EigenvalueDecomposition').$new(self)
+    }, 0);
     $alias(self, "eigen", "eigensystem");
     
-    Opal.def(self, '$lup', $Matrix_lup$172 = function $$lup() {
+    $def(self, '$lup', function $$lup() {
       var self = this;
 
-      return $$($nesting, 'LUPDecomposition').$new(self)
-    }, $Matrix_lup$172.$$arity = 0);
+      return $$('LUPDecomposition').$new(self)
+    }, 0);
     $alias(self, "lup_decomposition", "lup");
     
-    Opal.def(self, '$conjugate', $Matrix_conjugate$173 = function $$conjugate() {
+    $def(self, '$conjugate', function $$conjugate() {
       var self = this;
 
       return $send(self, 'collect', [], "conjugate".$to_proc())
-    }, $Matrix_conjugate$173.$$arity = 0);
+    }, 0);
     $alias(self, "conj", "conjugate");
     
-    Opal.def(self, '$imaginary', $Matrix_imaginary$174 = function $$imaginary() {
+    $def(self, '$imaginary', function $$imaginary() {
       var self = this;
 
       return $send(self, 'collect', [], "imaginary".$to_proc())
-    }, $Matrix_imaginary$174.$$arity = 0);
+    }, 0);
     $alias(self, "imag", "imaginary");
     
-    Opal.def(self, '$real', $Matrix_real$175 = function $$real() {
+    $def(self, '$real', function $$real() {
       var self = this;
 
       return $send(self, 'collect', [], "real".$to_proc())
-    }, $Matrix_real$175.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$rect', $Matrix_rect$176 = function $$rect() {
+    $def(self, '$rect', function $$rect() {
       var self = this;
 
       return [self.$real(), self.$imag()]
-    }, $Matrix_rect$176.$$arity = 0);
+    }, 0);
     $alias(self, "rectangular", "rect");
     
-    Opal.def(self, '$coerce', $Matrix_coerce$177 = function $$coerce(other) {
-      var self = this, $case = nil;
+    $def(self, '$coerce', function $$coerce(other) {
+      var self = this, $ret_or_1 = nil;
 
-      return (function() {$case = other;
-      if ($$($nesting, 'Numeric')['$===']($case)) {return [$$($nesting, 'Scalar').$new(other), self]}
-      else {return self.$raise($$($nesting, 'TypeError'), "" + (self.$class()) + " can't be coerced into " + (other.$class()))}})()
-    }, $Matrix_coerce$177.$$arity = 1);
+      if ($eqeqeq($$('Numeric'), ($ret_or_1 = other))) {
+        return [$$('Scalar').$new(other), self]
+      } else {
+        return self.$raise($$('TypeError'), "" + (self.$class()) + " can't be coerced into " + (other.$class()))
+      }
+    }, 1);
     
-    Opal.def(self, '$row_vectors', $Matrix_row_vectors$178 = function $$row_vectors() {
-      var $$179, self = this;
+    $def(self, '$row_vectors', function $$row_vectors() {
+      var self = this;
 
-      return $send($$($nesting, 'Array'), 'new', [self.$row_count()], ($$179 = function(i){var self = $$179.$$s == null ? this : $$179.$$s;
+      return $send($$('Array'), 'new', [self.$row_count()], function $$128(i){var self = $$128.$$s == null ? this : $$128.$$s;
 
         
         
-        if (i == null) {
-          i = nil;
-        };
-        return self.$row(i);}, $$179.$$s = self, $$179.$$arity = 1, $$179))
-    }, $Matrix_row_vectors$178.$$arity = 0);
+        if (i == null) i = nil;;
+        return self.$row(i);}, {$$arity: 1, $$s: self})
+    }, 0);
     
-    Opal.def(self, '$column_vectors', $Matrix_column_vectors$180 = function $$column_vectors() {
-      var $$181, self = this;
+    $def(self, '$column_vectors', function $$column_vectors() {
+      var self = this;
 
-      return $send($$($nesting, 'Array'), 'new', [self.$column_count()], ($$181 = function(i){var self = $$181.$$s == null ? this : $$181.$$s;
+      return $send($$('Array'), 'new', [self.$column_count()], function $$129(i){var self = $$129.$$s == null ? this : $$129.$$s;
 
         
         
-        if (i == null) {
-          i = nil;
-        };
-        return self.$column(i);}, $$181.$$s = self, $$181.$$arity = 1, $$181))
-    }, $Matrix_column_vectors$180.$$arity = 0);
+        if (i == null) i = nil;;
+        return self.$column(i);}, {$$arity: 1, $$s: self})
+    }, 0);
     
-    Opal.def(self, '$to_matrix', $Matrix_to_matrix$182 = function $$to_matrix() {
+    $def(self, '$to_matrix', function $$to_matrix() {
       var self = this;
 
       return self
-    }, $Matrix_to_matrix$182.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_a', $Matrix_to_a$183 = function $$to_a() {
+    $def(self, '$to_a', function $$to_a() {
       var self = this;
 
       return $send(self.rows, 'collect', [], "dup".$to_proc())
-    }, $Matrix_to_a$183.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$elements_to_f', $Matrix_elements_to_f$184 = function $$elements_to_f() {
+    $def(self, '$elements_to_f', function $$elements_to_f() {
       var self = this;
 
       
       self.$warn("Matrix#elements_to_f is deprecated, use map(&:to_f)", $hash2(["uplevel"], {"uplevel": 1}));
       return $send(self, 'map', [], "to_f".$to_proc());
-    }, $Matrix_elements_to_f$184.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$elements_to_i', $Matrix_elements_to_i$185 = function $$elements_to_i() {
+    $def(self, '$elements_to_i', function $$elements_to_i() {
       var self = this;
 
       
       self.$warn("Matrix#elements_to_i is deprecated, use map(&:to_i)", $hash2(["uplevel"], {"uplevel": 1}));
       return $send(self, 'map', [], "to_i".$to_proc());
-    }, $Matrix_elements_to_i$185.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$elements_to_r', $Matrix_elements_to_r$186 = function $$elements_to_r() {
+    $def(self, '$elements_to_r', function $$elements_to_r() {
       var self = this;
 
       
       self.$warn("Matrix#elements_to_r is deprecated, use map(&:to_r)", $hash2(["uplevel"], {"uplevel": 1}));
       return $send(self, 'map', [], "to_r".$to_proc());
-    }, $Matrix_elements_to_r$186.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_s', $Matrix_to_s$187 = function $$to_s() {
-      var $$188, self = this;
+    $def(self, '$to_s', function $$to_s() {
+      var self = this;
 
       if ($truthy(self['$empty?']())) {
         return "" + (self.$class()) + ".empty(" + (self.$row_count()) + ", " + (self.$column_count()) + ")"
       } else {
-        return $rb_plus($rb_plus("" + (self.$class()) + "[", $send(self.rows, 'collect', [], ($$188 = function(row){var self = $$188.$$s == null ? this : $$188.$$s, $$189;
-
+        return $rb_plus($rb_plus("" + (self.$class()) + "[", $send(self.rows, 'collect', [], function $$130(row){
           
           
-          if (row == null) {
-            row = nil;
-          };
-          return $rb_plus($rb_plus("[", $send(row, 'collect', [], ($$189 = function(e){var self = $$189.$$s == null ? this : $$189.$$s;
-
+          if (row == null) row = nil;;
+          return $rb_plus($rb_plus("[", $send(row, 'collect', [], function $$131(e){
             
             
-            if (e == null) {
-              e = nil;
-            };
-            return e.$to_s();}, $$189.$$s = self, $$189.$$arity = 1, $$189)).$join(", ")), "]");}, $$188.$$s = self, $$188.$$arity = 1, $$188)).$join(", ")), "]")
+            if (e == null) e = nil;;
+            return e.$to_s();}, 1).$join(", ")), "]");}, 1).$join(", ")), "]")
       }
-    }, $Matrix_to_s$187.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$inspect', $Matrix_inspect$190 = function $$inspect() {
+    $def(self, '$inspect', function $$inspect() {
       var self = this;
 
       if ($truthy(self['$empty?']())) {
@@ -4536,225 +3800,232 @@ Opal.modules["matrix"] = function(Opal) {
       } else {
         return "" + (self.$class()) + (self.rows.$inspect())
       }
-    }, $Matrix_inspect$190.$$arity = 0);
+    }, 0);
     (function($base, $parent_nesting) {
       var self = $module($base, 'ConversionHelper');
 
-      var $nesting = [self].concat($parent_nesting), $ConversionHelper_convert_to_array$191;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
       
-      Opal.def(self, '$convert_to_array', $ConversionHelper_convert_to_array$191 = function $$convert_to_array(obj, copy) {
-        var self = this, $case = nil, converted = nil, e = nil;
+      $def(self, '$convert_to_array', function $$convert_to_array(obj, copy) {
+        var self = this, $ret_or_1 = nil, converted = nil, e = nil;
 
         
         
-        if (copy == null) {
-          copy = false;
-        };
-        return (function() {$case = obj;
-        if ($$($nesting, 'Array')['$===']($case)) {if ($truthy(copy)) {
-          return obj.$dup()
-        } else {
-          return obj
-        }}
-        else if ($$($nesting, 'Vector')['$===']($case)) {return obj.$to_a()}
-        else {
-        
-        try {
-          converted = obj.$to_ary()
-        } catch ($err) {
-          if (Opal.rescue($err, [$$($nesting, 'Exception')])) {(e = $err)
-            try {
-              self.$raise($$($nesting, 'TypeError'), "" + "can't convert " + (obj.$class()) + " into an Array (" + (e.$message()) + ")")
-            } finally { Opal.pop_exception(); }
-          } else { throw $err; }
-        };;
-        if ($truthy(converted['$is_a?']($$($nesting, 'Array')))) {
+        if (copy == null) copy = false;;
+        if ($eqeqeq($$('Array'), ($ret_or_1 = obj))) {
+          if ($truthy(copy)) {
+            return obj.$dup()
+          } else {
+            return obj
+          }
+        } else if ($eqeqeq($$('Vector'), $ret_or_1)) {
+          return obj.$to_a()
         } else {
-          self.$raise($$($nesting, 'TypeError'), "" + (obj.$class()) + "#to_ary should return an Array")
+          
+          
+          try {
+            converted = obj.$to_ary()
+          } catch ($err) {
+            if (Opal.rescue($err, [$$('Exception')])) {(e = $err)
+              try {
+                self.$raise($$('TypeError'), "can't convert " + (obj.$class()) + " into an Array (" + (e.$message()) + ")")
+              } finally { Opal.pop_exception(); }
+            } else { throw $err; }
+          };;
+          if (!$truthy(converted['$is_a?']($$('Array')))) {
+            self.$raise($$('TypeError'), "" + (obj.$class()) + "#to_ary should return an Array")
+          };
+          return converted;
         };
-        return converted;}})();
-      }, $ConversionHelper_convert_to_array$191.$$arity = -2);
+      }, -2);
       return self.$private("convert_to_array");
     })($nesting[0], $nesting);
-    self.$extend($$($nesting, 'ConversionHelper'));
+    self.$extend($$('ConversionHelper'));
     (function($base, $parent_nesting) {
       var self = $module($base, 'CoercionHelper');
 
-      var $nesting = [self].concat($parent_nesting), $CoercionHelper_apply_through_coercion$192, $CoercionHelper_coerce_to$193, $CoercionHelper_coerce_to_int$194, $CoercionHelper_coerce_to_matrix$195;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
       
-      Opal.def(self, '$apply_through_coercion', $CoercionHelper_apply_through_coercion$192 = function $$apply_through_coercion(obj, oper) {
-        var self = this, coercion = nil, $ret_or_26 = nil;
+      $def(self, '$apply_through_coercion', function $$apply_through_coercion(obj, oper) {
+        var self = this, coercion = nil;
 
         try {
           
           coercion = obj.$coerce(self);
-          if ($truthy((function() {if ($truthy(($ret_or_26 = coercion['$is_a?']($$($nesting, 'Array'))))) {
-            return coercion.$length()['$=='](2)
-          } else {
-            return $ret_or_26
-          }; return nil; })())) {
-          } else {
-            self.$raise($$($nesting, 'TypeError'))
+          if (!($truthy(coercion['$is_a?']($$('Array'))) && ($eqeq(coercion.$length(), 2)))) {
+            self.$raise($$('TypeError'))
           };
           return coercion['$[]'](0).$public_send(oper, coercion['$[]'](1));
         } catch ($err) {
-          if (Opal.rescue($err, [$$($nesting, 'StandardError')])) {
+          if (Opal.rescue($err, [$$('StandardError')])) {
             try {
-              return self.$raise($$($nesting, 'TypeError'), "" + (obj.$inspect()) + " can't be coerced into " + (self.$class()))
+              return self.$raise($$('TypeError'), "" + (obj.$inspect()) + " can't be coerced into " + (self.$class()))
             } finally { Opal.pop_exception(); }
           } else { throw $err; }
         }
-      }, $CoercionHelper_apply_through_coercion$192.$$arity = 2);
+      }, 2);
       self.$private("apply_through_coercion");
-      Opal.defs(self, '$coerce_to', $CoercionHelper_coerce_to$193 = function $$coerce_to(obj, cls, meth) {
+      $defs(self, '$coerce_to', function $$coerce_to(obj, cls, meth) {
         var self = this, ret = nil, e = nil;
 
         
         if ($truthy(obj['$kind_of?'](cls))) {
-          return obj};
-        if ($truthy(obj['$respond_to?'](meth))) {
-        } else {
-          self.$raise($$($nesting, 'TypeError'), "" + "Expected a " + (cls) + " but got a " + (obj.$class()))
+          return obj
+        };
+        if (!$truthy(obj['$respond_to?'](meth))) {
+          self.$raise($$('TypeError'), "Expected a " + (cls) + " but got a " + (obj.$class()))
         };
         
         try {
           ret = obj.$__send__(meth)
         } catch ($err) {
-          if (Opal.rescue($err, [$$($nesting, 'Exception')])) {(e = $err)
+          if (Opal.rescue($err, [$$('Exception')])) {(e = $err)
             try {
-              self.$raise($$($nesting, 'TypeError'), "" + ("" + "Coercion error: " + (obj.$inspect()) + "." + (meth) + " => " + (cls) + " failed:\n") + ("" + "(" + (e.$message()) + ")"))
+              self.$raise($$('TypeError'), "" + ("Coercion error: " + (obj.$inspect()) + "." + (meth) + " => " + (cls) + " failed:\n") + ("(" + (e.$message()) + ")"))
             } finally { Opal.pop_exception(); }
           } else { throw $err; }
         };;
-        if ($truthy(ret['$kind_of?'](cls))) {
-        } else {
-          self.$raise($$($nesting, 'TypeError'), "" + "Coercion error: obj." + (meth) + " did NOT return a " + (cls) + " (was " + (ret.$class()) + ")")
+        if (!$truthy(ret['$kind_of?'](cls))) {
+          self.$raise($$('TypeError'), "Coercion error: obj." + (meth) + " did NOT return a " + (cls) + " (was " + (ret.$class()) + ")")
         };
         return ret;
-      }, $CoercionHelper_coerce_to$193.$$arity = 3);
-      Opal.defs(self, '$coerce_to_int', $CoercionHelper_coerce_to_int$194 = function $$coerce_to_int(obj) {
+      }, 3);
+      $defs(self, '$coerce_to_int', function $$coerce_to_int(obj) {
         var self = this;
 
-        return self.$coerce_to(obj, $$($nesting, 'Integer'), "to_int")
-      }, $CoercionHelper_coerce_to_int$194.$$arity = 1);
-      return (Opal.defs(self, '$coerce_to_matrix', $CoercionHelper_coerce_to_matrix$195 = function $$coerce_to_matrix(obj) {
+        return self.$coerce_to(obj, $$('Integer'), "to_int")
+      }, 1);
+      return $defs(self, '$coerce_to_matrix', function $$coerce_to_matrix(obj) {
         var self = this;
 
-        return self.$coerce_to(obj, $$($nesting, 'Matrix'), "to_matrix")
-      }, $CoercionHelper_coerce_to_matrix$195.$$arity = 1), nil) && 'coerce_to_matrix';
+        return self.$coerce_to(obj, $$('Matrix'), "to_matrix")
+      }, 1);
     })($nesting[0], $nesting);
-    self.$include($$($nesting, 'CoercionHelper'));
+    self.$include($$('CoercionHelper'));
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Scalar');
 
-      var $nesting = [self].concat($parent_nesting), $Scalar_initialize$196, $Scalar_$plus$197, $Scalar_$minus$198, $Scalar_$$199, $Scalar_$slash$201, $Scalar_$$$202;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.value = nil;
+      $proto.value = nil;
       
-      self.$include($$($nesting, 'ExceptionForMatrix'));
-      self.$include($$($nesting, 'CoercionHelper'));
+      self.$include($$('ExceptionForMatrix'));
+      self.$include($$('CoercionHelper'));
       
-      Opal.def(self, '$initialize', $Scalar_initialize$196 = function $$initialize(value) {
+      $def(self, '$initialize', function $$initialize(value) {
         var self = this;
 
         return (self.value = value)
-      }, $Scalar_initialize$196.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$+', $Scalar_$plus$197 = function(other) {
-        var self = this, $case = nil;
+      $def(self, '$+', function $Scalar_$plus$132(other) {
+        var self = this, $ret_or_1 = nil;
 
-        return (function() {$case = other;
-        if ($$($nesting, 'Numeric')['$===']($case)) {return $$($nesting, 'Scalar').$new($rb_plus(self.value, other))}
-        else if ($$($nesting, 'Vector')['$===']($case) || $$($nesting, 'Matrix')['$===']($case)) {return $$($nesting, 'Scalar').$Raise($$($nesting, 'ErrOperationNotDefined'), "+", self.value.$class(), other.$class())}
-        else {return self.$apply_through_coercion(other, "+")}})()
-      }, $Scalar_$plus$197.$$arity = 1);
+        if ($eqeqeq($$('Numeric'), ($ret_or_1 = other))) {
+          return $$('Scalar').$new($rb_plus(self.value, other))
+        } else if (($eqeqeq($$('Vector'), $ret_or_1) || ($eqeqeq($$('Matrix'), $ret_or_1)))) {
+          return $$('Scalar').$Raise($$('ErrOperationNotDefined'), "+", self.value.$class(), other.$class())
+        } else {
+          return self.$apply_through_coercion(other, "+")
+        }
+      }, 1);
       
-      Opal.def(self, '$-', $Scalar_$minus$198 = function(other) {
-        var self = this, $case = nil;
+      $def(self, '$-', function $Scalar_$minus$133(other) {
+        var self = this, $ret_or_1 = nil;
 
-        return (function() {$case = other;
-        if ($$($nesting, 'Numeric')['$===']($case)) {return $$($nesting, 'Scalar').$new($rb_minus(self.value, other))}
-        else if ($$($nesting, 'Vector')['$===']($case) || $$($nesting, 'Matrix')['$===']($case)) {return $$($nesting, 'Scalar').$Raise($$($nesting, 'ErrOperationNotDefined'), "-", self.value.$class(), other.$class())}
-        else {return self.$apply_through_coercion(other, "-")}})()
-      }, $Scalar_$minus$198.$$arity = 1);
+        if ($eqeqeq($$('Numeric'), ($ret_or_1 = other))) {
+          return $$('Scalar').$new($rb_minus(self.value, other))
+        } else if (($eqeqeq($$('Vector'), $ret_or_1) || ($eqeqeq($$('Matrix'), $ret_or_1)))) {
+          return $$('Scalar').$Raise($$('ErrOperationNotDefined'), "-", self.value.$class(), other.$class())
+        } else {
+          return self.$apply_through_coercion(other, "-")
+        }
+      }, 1);
       
-      Opal.def(self, '$*', $Scalar_$$199 = function(other) {
-        var $$200, self = this, $case = nil;
+      $def(self, '$*', function $Scalar_$$134(other) {
+        var self = this, $ret_or_1 = nil;
 
-        return (function() {$case = other;
-        if ($$($nesting, 'Numeric')['$===']($case)) {return $$($nesting, 'Scalar').$new($rb_times(self.value, other))}
-        else if ($$($nesting, 'Vector')['$===']($case) || $$($nesting, 'Matrix')['$===']($case)) {return $send(other, 'collect', [], ($$200 = function(e){var self = $$200.$$s == null ? this : $$200.$$s;
-          if (self.value == null) self.value = nil;
+        if ($eqeqeq($$('Numeric'), ($ret_or_1 = other))) {
+          return $$('Scalar').$new($rb_times(self.value, other))
+        } else if (($eqeqeq($$('Vector'), $ret_or_1) || ($eqeqeq($$('Matrix'), $ret_or_1)))) {
+          return $send(other, 'collect', [], function $$135(e){var self = $$135.$$s == null ? this : $$135.$$s;
+            if (self.value == null) self.value = nil;
 
-          
-          
-          if (e == null) {
-            e = nil;
-          };
-          return $rb_times(self.value, e);}, $$200.$$s = self, $$200.$$arity = 1, $$200))}
-        else {return self.$apply_through_coercion(other, "*")}})()
-      }, $Scalar_$$199.$$arity = 1);
-      
-      Opal.def(self, '$/', $Scalar_$slash$201 = function(other) {
-        var self = this, $case = nil;
-
-        return (function() {$case = other;
-        if ($$($nesting, 'Numeric')['$===']($case)) {return $$($nesting, 'Scalar').$new($rb_divide(self.value, other))}
-        else if ($$($nesting, 'Vector')['$===']($case)) {return $$($nesting, 'Scalar').$Raise($$($nesting, 'ErrOperationNotDefined'), "/", self.value.$class(), other.$class())}
-        else if ($$($nesting, 'Matrix')['$===']($case)) {return $rb_times(self, other.$inverse())}
-        else {return self.$apply_through_coercion(other, "/")}})()
-      }, $Scalar_$slash$201.$$arity = 1);
-      return (Opal.def(self, '$**', $Scalar_$$$202 = function(other) {
-        var self = this, $case = nil;
-
-        return (function() {$case = other;
-        if ($$($nesting, 'Numeric')['$===']($case)) {return $$($nesting, 'Scalar').$new(self.value['$**'](other))}
-        else if ($$($nesting, 'Vector')['$===']($case)) {return $$($nesting, 'Scalar').$Raise($$($nesting, 'ErrOperationNotDefined'), "**", self.value.$class(), other.$class())}
-        else if ($$($nesting, 'Matrix')['$===']($case)) {return $$($nesting, 'Scalar').$Raise($$($nesting, 'ErrOperationNotImplemented'), "**", self.value.$class(), other.$class())}
-        else {return self.$apply_through_coercion(other, "**")}})()
-      }, $Scalar_$$$202.$$arity = 1), nil) && '**';
-    })($nesting[0], $$($nesting, 'Numeric'), $nesting);
+            
+            
+            if (e == null) e = nil;;
+            return $rb_times(self.value, e);}, {$$arity: 1, $$s: self})
+        } else {
+          return self.$apply_through_coercion(other, "*")
+        }
+      }, 1);
+      
+      $def(self, '$/', function $Scalar_$slash$136(other) {
+        var self = this, $ret_or_1 = nil;
+
+        if ($eqeqeq($$('Numeric'), ($ret_or_1 = other))) {
+          return $$('Scalar').$new($rb_divide(self.value, other))
+        } else if ($eqeqeq($$('Vector'), $ret_or_1)) {
+          return $$('Scalar').$Raise($$('ErrOperationNotDefined'), "/", self.value.$class(), other.$class())
+        } else if ($eqeqeq($$('Matrix'), $ret_or_1)) {
+          return $rb_times(self, other.$inverse())
+        } else {
+          return self.$apply_through_coercion(other, "/")
+        }
+      }, 1);
+      return $def(self, '$**', function $Scalar_$$$137(other) {
+        var self = this, $ret_or_1 = nil;
+
+        if ($eqeqeq($$('Numeric'), ($ret_or_1 = other))) {
+          return $$('Scalar').$new(self.value['$**'](other))
+        } else if ($eqeqeq($$('Vector'), $ret_or_1)) {
+          return $$('Scalar').$Raise($$('ErrOperationNotDefined'), "**", self.value.$class(), other.$class())
+        } else if ($eqeqeq($$('Matrix'), $ret_or_1)) {
+          return $$('Scalar').$Raise($$('ErrOperationNotImplemented'), "**", self.value.$class(), other.$class())
+        } else {
+          return self.$apply_through_coercion(other, "**")
+        }
+      }, 1);
+    })($nesting[0], $$('Numeric'), $nesting);
   })($nesting[0], null, $nesting);
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Vector');
 
-    var $nesting = [self].concat($parent_nesting), $Vector_$$$203, $Vector_elements$204, $Vector_basis$205, $Vector_zero$206, $Vector_initialize$207, $Vector_$$$208, $Vector_$$$eq$209, $Vector_round$210, $Vector_size$212, $Vector_each$213, $Vector_each2$214, $Vector_collect2$216, $Vector_independent$ques$218, $Vector_independent$ques$220, $Vector_zero$ques$221, $Vector_$eq_eq$222, $Vector_eql$ques$223, $Vector_clone$224, $Vector_hash$225, $Vector_$$226, $Vector_$plus$228, $Vector_$minus$230, $Vector_$slash$232, $Vector_$plus$$234, $Vector_$minus$$235, $Vector_inner_product$237, $Vector_cross_product$239, $Vector_collect$242, $Vector_magnitude$243, $Vector_map2$245, $Vector_normalize$246, $Vector_angle_with$247, $Vector_covector$248, $Vector_to_a$249, $Vector_to_matrix$250, $Vector_elements_to_f$251, $Vector_elements_to_i$252, $Vector_elements_to_r$253, $Vector_coerce$254, $Vector_to_s$255, $Vector_inspect$256;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-    self.$$prototype.elements = nil;
+    $proto.elements = nil;
     
-    self.$include($$($nesting, 'ExceptionForMatrix'));
-    self.$include($$($nesting, 'Enumerable'));
-    self.$include($$$($$($nesting, 'Matrix'), 'CoercionHelper'));
-    self.$extend($$$($$($nesting, 'Matrix'), 'ConversionHelper'));
+    self.$include($$('ExceptionForMatrix'));
+    self.$include($$('Enumerable'));
+    self.$include($$$($$('Matrix'), 'CoercionHelper'));
+    self.$extend($$$($$('Matrix'), 'ConversionHelper'));
     self.$private_class_method("new");
     self.$attr_reader("elements");
     self.$protected("elements");
-    Opal.defs($$($nesting, 'Vector'), '$[]', $Vector_$$$203 = function($a) {
+    $defs($$('Vector'), '$[]', function $Vector_$$$138($a) {
       var $post_args, array, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       array = $post_args;;
       return self.$new(self.$convert_to_array(array, false));
-    }, $Vector_$$$203.$$arity = -1);
-    Opal.defs($$($nesting, 'Vector'), '$elements', $Vector_elements$204 = function $$elements(array, copy) {
+    }, -1);
+    $defs($$('Vector'), '$elements', function $$elements(array, copy) {
       var self = this;
 
       
       
-      if (copy == null) {
-        copy = true;
-      };
+      if (copy == null) copy = true;;
       return self.$new(self.$convert_to_array(array, copy));
-    }, $Vector_elements$204.$$arity = -2);
-    Opal.defs($$($nesting, 'Vector'), '$basis', $Vector_basis$205 = function $$basis($kwargs) {
-      var size, index, self = this, $ret_or_27 = nil, array = nil, $writer = nil;
+    }, -2);
+    $defs($$('Vector'), '$basis', function $$basis($kwargs) {
+      var size, index, self = this, array = nil, $writer = nil;
 
       
       
@@ -4774,544 +4045,505 @@ Opal.modules["matrix"] = function(Opal) {
       }
       index = $kwargs.$$smap["index"];;
       if ($truthy($rb_lt(size, 1))) {
-        self.$raise($$($nesting, 'ArgumentError'), "" + "invalid size (" + (size) + " for 1..)")};
-      if ($truthy((function() {if ($truthy(($ret_or_27 = $rb_le(0, index)))) {
-        return $rb_lt(index, size)
-      } else {
-        return $ret_or_27
-      }; return nil; })())) {
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "" + "invalid index (" + (index) + " for 0..." + (size) + ")")
+        self.$raise($$('ArgumentError'), "invalid size (" + (size) + " for 1..)")
+      };
+      if (!($rb_le(0, index) && ($truthy($rb_lt(index, size))))) {
+        self.$raise($$('ArgumentError'), "invalid index (" + (index) + " for 0..." + (size) + ")")
       };
-      array = $$($nesting, 'Array').$new(size, 0);
+      array = $$('Array').$new(size, 0);
       
       $writer = [index, 1];
-      $send(array, '[]=', Opal.to_a($writer));
+      $send(array, '[]=', $to_a($writer));
       $writer[$rb_minus($writer["length"], 1)];;
       return self.$new(self.$convert_to_array(array, false));
-    }, $Vector_basis$205.$$arity = 1);
-    Opal.defs($$($nesting, 'Vector'), '$zero', $Vector_zero$206 = function $$zero(size) {
+    }, 1);
+    $defs($$('Vector'), '$zero', function $$zero(size) {
       var self = this, array = nil;
 
       
       if ($truthy($rb_lt(size, 0))) {
-        self.$raise($$($nesting, 'ArgumentError'), "" + "invalid size (" + (size) + " for 0..)")};
-      array = $$($nesting, 'Array').$new(size, 0);
+        self.$raise($$('ArgumentError'), "invalid size (" + (size) + " for 0..)")
+      };
+      array = $$('Array').$new(size, 0);
       return self.$new(self.$convert_to_array(array, false));
-    }, $Vector_zero$206.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$initialize', $Vector_initialize$207 = function $$initialize(array) {
+    $def(self, '$initialize', function $$initialize(array) {
       var self = this;
 
       return (self.elements = array)
-    }, $Vector_initialize$207.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$[]', $Vector_$$$208 = function(i) {
+    $def(self, '$[]', function $Vector_$$$139(i) {
       var self = this;
 
       return self.elements['$[]'](i)
-    }, $Vector_$$$208.$$arity = 1);
+    }, 1);
     $alias(self, "element", "[]");
     $alias(self, "component", "[]");
     
-    Opal.def(self, '$[]=', $Vector_$$$eq$209 = function(i, v) {
+    $def(self, '$[]=', function $Vector_$$$eq$140(i, v) {
       var self = this, $writer = nil;
 
       
       $writer = [i, v];
-      $send(self.elements, '[]=', Opal.to_a($writer));
+      $send(self.elements, '[]=', $to_a($writer));
       return $writer[$rb_minus($writer["length"], 1)];
-    }, $Vector_$$$eq$209.$$arity = 2);
+    }, 2);
     $alias(self, "set_element", "[]=");
     $alias(self, "set_component", "[]=");
     self.$private("[]=", "set_element", "set_component");
     
-    Opal.def(self, '$round', $Vector_round$210 = function $$round(ndigits) {
-      var $$211, self = this;
+    $def(self, '$round', function $$round(ndigits) {
+      var self = this;
 
       
       
-      if (ndigits == null) {
-        ndigits = 0;
-      };
-      return $send(self, 'map', [], ($$211 = function(e){var self = $$211.$$s == null ? this : $$211.$$s;
-
+      if (ndigits == null) ndigits = 0;;
+      return $send(self, 'map', [], function $$141(e){
         
         
-        if (e == null) {
-          e = nil;
-        };
-        return e.$round(ndigits);}, $$211.$$s = self, $$211.$$arity = 1, $$211));
-    }, $Vector_round$210.$$arity = -1);
+        if (e == null) e = nil;;
+        return e.$round(ndigits);}, 1);
+    }, -1);
     
-    Opal.def(self, '$size', $Vector_size$212 = function $$size() {
+    $def(self, '$size', function $$size() {
       var self = this;
 
       return self.elements.$size()
-    }, $Vector_size$212.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$each', $Vector_each$213 = function $$each() {
-      var $iter = $Vector_each$213.$$p, block = $iter || nil, self = this;
+    $def(self, '$each', function $$each() {
+      var block = $$each.$$p || nil, self = this;
 
-      if ($iter) $Vector_each$213.$$p = null;
-      
+      delete $$each.$$p;
       
-      if ($iter) $Vector_each$213.$$p = null;;
-      if ((block !== nil)) {
-      } else {
+      ;
+      if (!(block !== nil)) {
         return self.$to_enum("each")
       };
       $send(self.elements, 'each', [], block.$to_proc());
       return self;
-    }, $Vector_each$213.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$each2', $Vector_each2$214 = function $$each2(v) {
-      var $$215, $iter = $Vector_each2$214.$$p, $yield = $iter || nil, self = this;
+    $def(self, '$each2', function $$each2(v) {
+      var $yield = $$each2.$$p || nil, self = this;
 
-      if ($iter) $Vector_each2$214.$$p = null;
+      delete $$each2.$$p;
       
-      if ($truthy(v['$kind_of?']($$($nesting, 'Integer')))) {
-        self.$raise($$($nesting, 'TypeError'), "Integer is not like Vector")};
-      if ($truthy(self.$size()['$!='](v.$size()))) {
-        $$($nesting, 'Vector').$Raise($$($nesting, 'ErrDimensionMismatch'))};
-      if (($yield !== nil)) {
-      } else {
+      if ($truthy(v['$kind_of?']($$('Integer')))) {
+        self.$raise($$('TypeError'), "Integer is not like Vector")
+      };
+      if ($neqeq(self.$size(), v.$size())) {
+        $$('Vector').$Raise($$('ErrDimensionMismatch'))
+      };
+      if (!($yield !== nil)) {
         return self.$to_enum("each2", v)
       };
-      $send(self.$size(), 'times', [], ($$215 = function(i){var self = $$215.$$s == null ? this : $$215.$$s;
+      $send(self.$size(), 'times', [], function $$142(i){var self = $$142.$$s == null ? this : $$142.$$s;
         if (self.elements == null) self.elements = nil;
 
         
         
-        if (i == null) {
-          i = nil;
-        };
-        return Opal.yieldX($yield, [self.elements['$[]'](i), v['$[]'](i)]);;}, $$215.$$s = self, $$215.$$arity = 1, $$215));
+        if (i == null) i = nil;;
+        return Opal.yieldX($yield, [self.elements['$[]'](i), v['$[]'](i)]);;}, {$$arity: 1, $$s: self});
       return self;
-    }, $Vector_each2$214.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$collect2', $Vector_collect2$216 = function $$collect2(v) {
-      var $$217, $iter = $Vector_collect2$216.$$p, $yield = $iter || nil, self = this;
+    $def(self, '$collect2', function $$collect2(v) {
+      var $yield = $$collect2.$$p || nil, self = this;
 
-      if ($iter) $Vector_collect2$216.$$p = null;
+      delete $$collect2.$$p;
       
-      if ($truthy(v['$kind_of?']($$($nesting, 'Integer')))) {
-        self.$raise($$($nesting, 'TypeError'), "Integer is not like Vector")};
-      if ($truthy(self.$size()['$!='](v.$size()))) {
-        $$($nesting, 'Vector').$Raise($$($nesting, 'ErrDimensionMismatch'))};
-      if (($yield !== nil)) {
-      } else {
+      if ($truthy(v['$kind_of?']($$('Integer')))) {
+        self.$raise($$('TypeError'), "Integer is not like Vector")
+      };
+      if ($neqeq(self.$size(), v.$size())) {
+        $$('Vector').$Raise($$('ErrDimensionMismatch'))
+      };
+      if (!($yield !== nil)) {
         return self.$to_enum("collect2", v)
       };
-      return $send($$($nesting, 'Array'), 'new', [self.$size()], ($$217 = function(i){var self = $$217.$$s == null ? this : $$217.$$s;
+      return $send($$('Array'), 'new', [self.$size()], function $$143(i){var self = $$143.$$s == null ? this : $$143.$$s;
         if (self.elements == null) self.elements = nil;
 
         
         
-        if (i == null) {
-          i = nil;
-        };
-        return Opal.yieldX($yield, [self.elements['$[]'](i), v['$[]'](i)]);;}, $$217.$$s = self, $$217.$$arity = 1, $$217));
-    }, $Vector_collect2$216.$$arity = 1);
-    Opal.defs($$($nesting, 'Vector'), '$independent?', $Vector_independent$ques$218 = function($a) {
-      var $post_args, vs, $$219, self = this;
+        if (i == null) i = nil;;
+        return Opal.yieldX($yield, [self.elements['$[]'](i), v['$[]'](i)]);;}, {$$arity: 1, $$s: self});
+    }, 1);
+    $defs($$('Vector'), '$independent?', function $Vector_independent$ques$144($a) {
+      var $post_args, vs, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       vs = $post_args;;
-      $send(vs, 'each', [], ($$219 = function(v){var self = $$219.$$s == null ? this : $$219.$$s;
+      $send(vs, 'each', [], function $$145(v){var self = $$145.$$s == null ? this : $$145.$$s;
 
         
         
-        if (v == null) {
-          v = nil;
-        };
-        if ($truthy(v['$is_a?']($$($nesting, 'Vector')))) {
-        } else {
-          self.$raise($$($nesting, 'TypeError'), "" + "expected Vector, got " + (v.$class()))
+        if (v == null) v = nil;;
+        if (!$truthy(v['$is_a?']($$('Vector')))) {
+          self.$raise($$('TypeError'), "expected Vector, got " + (v.$class()))
         };
-        if (v.$size()['$=='](vs.$first().$size())) {
+        if ($eqeq(v.$size(), vs.$first().$size())) {
           return nil
         } else {
-          return $$($nesting, 'Vector').$Raise($$($nesting, 'ErrDimensionMismatch'))
-        };}, $$219.$$s = self, $$219.$$arity = 1, $$219));
+          return $$('Vector').$Raise($$('ErrDimensionMismatch'))
+        };}, {$$arity: 1, $$s: self});
       if ($truthy($rb_gt(vs.$count(), vs.$first().$size()))) {
-        return false};
-      return $send($$($nesting, 'Matrix'), '[]', Opal.to_a(vs)).$rank()['$eql?'](vs.$count());
-    }, $Vector_independent$ques$218.$$arity = -1);
+        return false
+      };
+      return $send($$('Matrix'), '[]', $to_a(vs)).$rank()['$eql?'](vs.$count());
+    }, -1);
     
-    Opal.def(self, '$independent?', $Vector_independent$ques$220 = function($a) {
+    $def(self, '$independent?', function $Vector_independent$ques$146($a) {
       var $post_args, vs, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       vs = $post_args;;
-      return $send(self.$class(), 'independent?', [self].concat(Opal.to_a(vs)));
-    }, $Vector_independent$ques$220.$$arity = -1);
+      return $send(self.$class(), 'independent?', [self].concat($to_a(vs)));
+    }, -1);
     
-    Opal.def(self, '$zero?', $Vector_zero$ques$221 = function() {
+    $def(self, '$zero?', function $Vector_zero$ques$147() {
       var self = this;
 
       return $send(self, 'all?', [], "zero?".$to_proc())
-    }, $Vector_zero$ques$221.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$==', $Vector_$eq_eq$222 = function(other) {
+    $def(self, '$==', function $Vector_$eq_eq$148(other) {
       var self = this;
 
       
-      if ($truthy($$($nesting, 'Vector')['$==='](other))) {
-      } else {
+      if (!$eqeqeq($$('Vector'), other)) {
         return false
       };
       return self.elements['$=='](other.$elements());
-    }, $Vector_$eq_eq$222.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$eql?', $Vector_eql$ques$223 = function(other) {
+    $def(self, '$eql?', function $Vector_eql$ques$149(other) {
       var self = this;
 
       
-      if ($truthy($$($nesting, 'Vector')['$==='](other))) {
-      } else {
+      if (!$eqeqeq($$('Vector'), other)) {
         return false
       };
       return self.elements['$eql?'](other.$elements());
-    }, $Vector_eql$ques$223.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$clone', $Vector_clone$224 = function $$clone() {
+    $def(self, '$clone', function $$clone() {
       var self = this;
 
       return self.$class().$elements(self.elements)
-    }, $Vector_clone$224.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$hash', $Vector_hash$225 = function $$hash() {
+    $def(self, '$hash', function $$hash() {
       var self = this;
 
       return self.elements.$hash()
-    }, $Vector_hash$225.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$*', $Vector_$$226 = function(x) {
-      var $$227, self = this, $case = nil, els = nil;
-
-      return (function() {$case = x;
-      if ($$($nesting, 'Numeric')['$===']($case)) {
-      els = $send(self.elements, 'collect', [], ($$227 = function(e){var self = $$227.$$s == null ? this : $$227.$$s;
+    $def(self, '$*', function $Vector_$$150(x) {
+      var self = this, $ret_or_1 = nil, els = nil;
 
+      if ($eqeqeq($$('Numeric'), ($ret_or_1 = x))) {
         
-        
-        if (e == null) {
-          e = nil;
-        };
-        return $rb_times(e, x);}, $$227.$$s = self, $$227.$$arity = 1, $$227));
-      return self.$class().$elements(els, false);}
-      else if ($$($nesting, 'Matrix')['$===']($case)) {return $rb_times($$($nesting, 'Matrix').$column_vector(self), x)}
-      else if ($$($nesting, 'Vector')['$===']($case)) {return $$($nesting, 'Vector').$Raise($$($nesting, 'ErrOperationNotDefined'), "*", self.$class(), x.$class())}
-      else {return self.$apply_through_coercion(x, "*")}})()
-    }, $Vector_$$226.$$arity = 1);
+        els = $send(self.elements, 'collect', [], function $$151(e){
+          
+          
+          if (e == null) e = nil;;
+          return $rb_times(e, x);}, 1);
+        return self.$class().$elements(els, false);
+      } else if ($eqeqeq($$('Matrix'), $ret_or_1)) {
+        return $rb_times($$('Matrix').$column_vector(self), x)
+      } else if ($eqeqeq($$('Vector'), $ret_or_1)) {
+        return $$('Vector').$Raise($$('ErrOperationNotDefined'), "*", self.$class(), x.$class())
+      } else {
+        return self.$apply_through_coercion(x, "*")
+      }
+    }, 1);
     
-    Opal.def(self, '$+', $Vector_$plus$228 = function(v) {
-      var $$229, self = this, $case = nil, els = nil;
-
-      return (function() {$case = v;
-      if ($$($nesting, 'Vector')['$===']($case)) {
-      if ($truthy(self.$size()['$!='](v.$size()))) {
-        $$($nesting, 'Vector').$Raise($$($nesting, 'ErrDimensionMismatch'))};
-      els = $send(self, 'collect2', [v], ($$229 = function(v1, v2){var self = $$229.$$s == null ? this : $$229.$$s;
+    $def(self, '$+', function $Vector_$plus$152(v) {
+      var self = this, $ret_or_1 = nil, els = nil;
 
+      if ($eqeqeq($$('Vector'), ($ret_or_1 = v))) {
         
-        
-        if (v1 == null) {
-          v1 = nil;
-        };
-        
-        if (v2 == null) {
-          v2 = nil;
+        if ($neqeq(self.$size(), v.$size())) {
+          $$('Vector').$Raise($$('ErrDimensionMismatch'))
         };
-        return $rb_plus(v1, v2);}, $$229.$$s = self, $$229.$$arity = 2, $$229));
-      return self.$class().$elements(els, false);}
-      else if ($$($nesting, 'Matrix')['$===']($case)) {return $rb_plus($$($nesting, 'Matrix').$column_vector(self), v)}
-      else {return self.$apply_through_coercion(v, "+")}})()
-    }, $Vector_$plus$228.$$arity = 1);
+        els = $send(self, 'collect2', [v], function $$153(v1, v2){
+          
+          
+          if (v1 == null) v1 = nil;;
+          
+          if (v2 == null) v2 = nil;;
+          return $rb_plus(v1, v2);}, 2);
+        return self.$class().$elements(els, false);
+      } else if ($eqeqeq($$('Matrix'), $ret_or_1)) {
+        return $rb_plus($$('Matrix').$column_vector(self), v)
+      } else {
+        return self.$apply_through_coercion(v, "+")
+      }
+    }, 1);
     
-    Opal.def(self, '$-', $Vector_$minus$230 = function(v) {
-      var $$231, self = this, $case = nil, els = nil;
+    $def(self, '$-', function $Vector_$minus$154(v) {
+      var self = this, $ret_or_1 = nil, els = nil;
 
-      return (function() {$case = v;
-      if ($$($nesting, 'Vector')['$===']($case)) {
-      if ($truthy(self.$size()['$!='](v.$size()))) {
-        $$($nesting, 'Vector').$Raise($$($nesting, 'ErrDimensionMismatch'))};
-      els = $send(self, 'collect2', [v], ($$231 = function(v1, v2){var self = $$231.$$s == null ? this : $$231.$$s;
-
-        
+      if ($eqeqeq($$('Vector'), ($ret_or_1 = v))) {
         
-        if (v1 == null) {
-          v1 = nil;
+        if ($neqeq(self.$size(), v.$size())) {
+          $$('Vector').$Raise($$('ErrDimensionMismatch'))
         };
-        
-        if (v2 == null) {
-          v2 = nil;
-        };
-        return $rb_minus(v1, v2);}, $$231.$$s = self, $$231.$$arity = 2, $$231));
-      return self.$class().$elements(els, false);}
-      else if ($$($nesting, 'Matrix')['$===']($case)) {return $rb_minus($$($nesting, 'Matrix').$column_vector(self), v)}
-      else {return self.$apply_through_coercion(v, "-")}})()
-    }, $Vector_$minus$230.$$arity = 1);
+        els = $send(self, 'collect2', [v], function $$155(v1, v2){
+          
+          
+          if (v1 == null) v1 = nil;;
+          
+          if (v2 == null) v2 = nil;;
+          return $rb_minus(v1, v2);}, 2);
+        return self.$class().$elements(els, false);
+      } else if ($eqeqeq($$('Matrix'), $ret_or_1)) {
+        return $rb_minus($$('Matrix').$column_vector(self), v)
+      } else {
+        return self.$apply_through_coercion(v, "-")
+      }
+    }, 1);
     
-    Opal.def(self, '$/', $Vector_$slash$232 = function(x) {
-      var $$233, self = this, $case = nil, els = nil;
-
-      return (function() {$case = x;
-      if ($$($nesting, 'Numeric')['$===']($case)) {
-      els = $send(self.elements, 'collect', [], ($$233 = function(e){var self = $$233.$$s == null ? this : $$233.$$s;
+    $def(self, '$/', function $Vector_$slash$156(x) {
+      var self = this, $ret_or_1 = nil, els = nil;
 
+      if ($eqeqeq($$('Numeric'), ($ret_or_1 = x))) {
         
-        
-        if (e == null) {
-          e = nil;
-        };
-        return $rb_divide(e, x);}, $$233.$$s = self, $$233.$$arity = 1, $$233));
-      return self.$class().$elements(els, false);}
-      else if ($$($nesting, 'Matrix')['$===']($case) || $$($nesting, 'Vector')['$===']($case)) {return $$($nesting, 'Vector').$Raise($$($nesting, 'ErrOperationNotDefined'), "/", self.$class(), x.$class())}
-      else {return self.$apply_through_coercion(x, "/")}})()
-    }, $Vector_$slash$232.$$arity = 1);
+        els = $send(self.elements, 'collect', [], function $$157(e){
+          
+          
+          if (e == null) e = nil;;
+          return $rb_divide(e, x);}, 1);
+        return self.$class().$elements(els, false);
+      } else if (($eqeqeq($$('Matrix'), $ret_or_1) || ($eqeqeq($$('Vector'), $ret_or_1)))) {
+        return $$('Vector').$Raise($$('ErrOperationNotDefined'), "/", self.$class(), x.$class())
+      } else {
+        return self.$apply_through_coercion(x, "/")
+      }
+    }, 1);
     
-    Opal.def(self, '$+@', $Vector_$plus$$234 = function() {
+    $def(self, '$+@', function $Vector_$plus$$158() {
       var self = this;
 
       return self
-    }, $Vector_$plus$$234.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$-@', $Vector_$minus$$235 = function() {
-      var $$236, self = this;
-
-      return $send(self, 'collect', [], ($$236 = function(e){var self = $$236.$$s == null ? this : $$236.$$s;
+    $def(self, '$-@', function $Vector_$minus$$159() {
+      var self = this;
 
+      return $send(self, 'collect', [], function $$160(e){
         
         
-        if (e == null) {
-          e = nil;
-        };
-        return e['$-@']();}, $$236.$$s = self, $$236.$$arity = 1, $$236))
-    }, $Vector_$minus$$235.$$arity = 0);
+        if (e == null) e = nil;;
+        return e['$-@']();}, 1)
+    }, 0);
     
-    Opal.def(self, '$inner_product', $Vector_inner_product$237 = function $$inner_product(v) {
-      var $$238, self = this, p = nil;
+    $def(self, '$inner_product', function $$inner_product(v) {
+      var self = this, p = nil;
 
       
-      if ($truthy(self.$size()['$!='](v.$size()))) {
-        $$($nesting, 'Vector').$Raise($$($nesting, 'ErrDimensionMismatch'))};
+      if ($neqeq(self.$size(), v.$size())) {
+        $$('Vector').$Raise($$('ErrDimensionMismatch'))
+      };
       p = 0;
-      $send(self, 'each2', [v], ($$238 = function(v1, v2){var self = $$238.$$s == null ? this : $$238.$$s;
-
+      $send(self, 'each2', [v], function $$161(v1, v2){
         
         
-        if (v1 == null) {
-          v1 = nil;
-        };
+        if (v1 == null) v1 = nil;;
         
-        if (v2 == null) {
-          v2 = nil;
-        };
-        return (p = $rb_plus(p, $rb_times(v1, v2.$conj())));}, $$238.$$s = self, $$238.$$arity = 2, $$238));
+        if (v2 == null) v2 = nil;;
+        return (p = $rb_plus(p, $rb_times(v1, v2.$conj())));}, 2);
       return p;
-    }, $Vector_inner_product$237.$$arity = 1);
+    }, 1);
     self.$alias_method("dot", "inner_product");
     
-    Opal.def(self, '$cross_product', $Vector_cross_product$239 = function $$cross_product($a) {
-      var $post_args, vs, $$240, $$241, self = this, $case = nil, v = nil, rows = nil;
+    $def(self, '$cross_product', function $$cross_product($a) {
+      var $post_args, vs, self = this, $ret_or_1 = nil, v = nil, rows = nil;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       vs = $post_args;;
-      if ($truthy($rb_ge(self.$size(), 2))) {
-      } else {
-        self.$raise($$($nesting, 'ErrOperationNotDefined'), "" + "cross product is not defined on vectors of dimension " + (self.$size()))
+      if (!$truthy($rb_ge(self.$size(), 2))) {
+        self.$raise($$('ErrOperationNotDefined'), "cross product is not defined on vectors of dimension " + (self.$size()))
       };
-      if (vs.$size()['$==']($rb_minus(self.$size(), 2))) {
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "" + "wrong number of arguments (" + (vs.$size()) + " for " + ($rb_minus(self.$size(), 2)) + ")")
+      if (!$eqeq(vs.$size(), $rb_minus(self.$size(), 2))) {
+        self.$raise($$('ArgumentError'), "wrong number of arguments (" + (vs.$size()) + " for " + ($rb_minus(self.$size(), 2)) + ")")
       };
-      $send(vs, 'each', [], ($$240 = function(v){var self = $$240.$$s == null ? this : $$240.$$s;
+      $send(vs, 'each', [], function $$162(v){var self = $$162.$$s == null ? this : $$162.$$s;
 
         
         
-        if (v == null) {
-          v = nil;
-        };
-        if ($truthy(v['$is_a?']($$($nesting, 'Vector')))) {
-        } else {
-          self.$raise($$($nesting, 'TypeError'), "" + "expected Vector, got " + (v.$class()))
+        if (v == null) v = nil;;
+        if (!$truthy(v['$is_a?']($$('Vector')))) {
+          self.$raise($$('TypeError'), "expected Vector, got " + (v.$class()))
         };
-        if (v.$size()['$=='](self.$size())) {
+        if ($eqeq(v.$size(), self.$size())) {
           return nil
         } else {
-          return $$($nesting, 'Vector').$Raise($$($nesting, 'ErrDimensionMismatch'))
-        };}, $$240.$$s = self, $$240.$$arity = 1, $$240));
-      return (function() {$case = self.$size();
-      if ((2)['$===']($case)) {return $$($nesting, 'Vector')['$[]'](self.elements['$[]'](1)['$-@'](), self.elements['$[]'](0))}
-      else if ((3)['$===']($case)) {
-      v = vs['$[]'](0);
-      return $$($nesting, 'Vector')['$[]']($rb_minus($rb_times(v['$[]'](2), self.elements['$[]'](1)), $rb_times(v['$[]'](1), self.elements['$[]'](2))), $rb_minus($rb_times(v['$[]'](0), self.elements['$[]'](2)), $rb_times(v['$[]'](2), self.elements['$[]'](0))), $rb_minus($rb_times(v['$[]'](1), self.elements['$[]'](0)), $rb_times(v['$[]'](0), self.elements['$[]'](1))));}
-      else {
-      rows = [self].concat(Opal.to_a(vs)).concat([$send($$($nesting, 'Array'), 'new', [self.$size()], ($$241 = function(i){var self = $$241.$$s == null ? this : $$241.$$s;
-
-        
+          return $$('Vector').$Raise($$('ErrDimensionMismatch'))
+        };}, {$$arity: 1, $$s: self});
+      if ($eqeqeq(2, ($ret_or_1 = self.$size()))) {
+        return $$('Vector')['$[]'](self.elements['$[]'](1)['$-@'](), self.elements['$[]'](0))
+      } else if ($eqeqeq(3, $ret_or_1)) {
+        
+        v = vs['$[]'](0);
+        return $$('Vector')['$[]']($rb_minus($rb_times(v['$[]'](2), self.elements['$[]'](1)), $rb_times(v['$[]'](1), self.elements['$[]'](2))), $rb_minus($rb_times(v['$[]'](0), self.elements['$[]'](2)), $rb_times(v['$[]'](2), self.elements['$[]'](0))), $rb_minus($rb_times(v['$[]'](1), self.elements['$[]'](0)), $rb_times(v['$[]'](0), self.elements['$[]'](1))));
+      } else {
         
-        if (i == null) {
-          i = nil;
-        };
-        return $$($nesting, 'Vector').$basis($hash2(["size", "index"], {"size": self.$size(), "index": i}));}, $$241.$$s = self, $$241.$$arity = 1, $$241))]);
-      return $$($nesting, 'Matrix').$rows(rows).$laplace_expansion($hash2(["row"], {"row": $rb_minus(self.$size(), 1)}));}})();
-    }, $Vector_cross_product$239.$$arity = -1);
+        rows = [self].concat($to_a(vs)).concat([$send($$('Array'), 'new', [self.$size()], function $$163(i){var self = $$163.$$s == null ? this : $$163.$$s;
+
+          
+          
+          if (i == null) i = nil;;
+          return $$('Vector').$basis($hash2(["size", "index"], {"size": self.$size(), "index": i}));}, {$$arity: 1, $$s: self})]);
+        return $$('Matrix').$rows(rows).$laplace_expansion($hash2(["row"], {"row": $rb_minus(self.$size(), 1)}));
+      };
+    }, -1);
     self.$alias_method("cross", "cross_product");
     
-    Opal.def(self, '$collect', $Vector_collect$242 = function $$collect() {
-      var $iter = $Vector_collect$242.$$p, block = $iter || nil, self = this, els = nil;
+    $def(self, '$collect', function $$collect() {
+      var block = $$collect.$$p || nil, self = this, els = nil;
 
-      if ($iter) $Vector_collect$242.$$p = null;
-      
+      delete $$collect.$$p;
       
-      if ($iter) $Vector_collect$242.$$p = null;;
-      if ((block !== nil)) {
-      } else {
+      ;
+      if (!(block !== nil)) {
         return self.$to_enum("collect")
       };
       els = $send(self.elements, 'collect', [], block.$to_proc());
       return self.$class().$elements(els, false);
-    }, $Vector_collect$242.$$arity = 0);
+    }, 0);
     $alias(self, "map", "collect");
     
-    Opal.def(self, '$magnitude', $Vector_magnitude$243 = function $$magnitude() {
-      var $$244, self = this;
-
-      return $$($nesting, 'Math').$sqrt($send(self.elements, 'inject', [0], ($$244 = function(v, e){var self = $$244.$$s == null ? this : $$244.$$s;
+    $def(self, '$magnitude', function $$magnitude() {
+      var self = this;
 
+      return $$('Math').$sqrt($send(self.elements, 'inject', [0], function $$164(v, e){
         
         
-        if (v == null) {
-          v = nil;
-        };
+        if (v == null) v = nil;;
         
-        if (e == null) {
-          e = nil;
-        };
-        return $rb_plus(v, e.$abs2());}, $$244.$$s = self, $$244.$$arity = 2, $$244)))
-    }, $Vector_magnitude$243.$$arity = 0);
+        if (e == null) e = nil;;
+        return $rb_plus(v, e.$abs2());}, 2))
+    }, 0);
     $alias(self, "r", "magnitude");
     $alias(self, "norm", "magnitude");
     
-    Opal.def(self, '$map2', $Vector_map2$245 = function $$map2(v) {
-      var $iter = $Vector_map2$245.$$p, block = $iter || nil, self = this, els = nil;
+    $def(self, '$map2', function $$map2(v) {
+      var block = $$map2.$$p || nil, self = this, els = nil;
 
-      if ($iter) $Vector_map2$245.$$p = null;
+      delete $$map2.$$p;
       
-      
-      if ($iter) $Vector_map2$245.$$p = null;;
-      if ((block !== nil)) {
-      } else {
+      ;
+      if (!(block !== nil)) {
         return self.$to_enum("map2", v)
       };
       els = $send(self, 'collect2', [v], block.$to_proc());
       return self.$class().$elements(els, false);
-    }, $Vector_map2$245.$$arity = 1);
-    (function($base, $super, $parent_nesting) {
-      var self = $klass($base, $super, 'ZeroVectorError');
-
-      var $nesting = [self].concat($parent_nesting);
-
-      return nil
-    })($nesting[0], $$($nesting, 'StandardError'), $nesting);
+    }, 1);
+    $klass($nesting[0], $$('StandardError'), 'ZeroVectorError');
     
-    Opal.def(self, '$normalize', $Vector_normalize$246 = function $$normalize() {
+    $def(self, '$normalize', function $$normalize() {
       var self = this, n = nil;
 
       
       n = self.$magnitude();
-      if (n['$=='](0)) {
-        self.$raise($$($nesting, 'ZeroVectorError'), "Zero vectors can not be normalized")};
+      if ($eqeq(n, 0)) {
+        self.$raise($$('ZeroVectorError'), "Zero vectors can not be normalized")
+      };
       return $rb_divide(self, n);
-    }, $Vector_normalize$246.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$angle_with', $Vector_angle_with$247 = function $$angle_with(v) {
+    $def(self, '$angle_with', function $$angle_with(v) {
       var self = this, prod = nil;
 
       
-      if ($truthy(v['$is_a?']($$($nesting, 'Vector')))) {
-      } else {
-        self.$raise($$($nesting, 'TypeError'), "" + "Expected a Vector, got a " + (v.$class()))
+      if (!$truthy(v['$is_a?']($$('Vector')))) {
+        self.$raise($$('TypeError'), "Expected a Vector, got a " + (v.$class()))
+      };
+      if ($neqeq(self.$size(), v.$size())) {
+        $$('Vector').$Raise($$('ErrDimensionMismatch'))
       };
-      if ($truthy(self.$size()['$!='](v.$size()))) {
-        $$($nesting, 'Vector').$Raise($$($nesting, 'ErrDimensionMismatch'))};
       prod = $rb_times(self.$magnitude(), v.$magnitude());
-      if (prod['$=='](0)) {
-        self.$raise($$($nesting, 'ZeroVectorError'), "Can't get angle of zero vector")};
-      return $$($nesting, 'Math').$acos($rb_divide(self.$inner_product(v), prod));
-    }, $Vector_angle_with$247.$$arity = 1);
+      if ($eqeq(prod, 0)) {
+        self.$raise($$('ZeroVectorError'), "Can't get angle of zero vector")
+      };
+      return $$('Math').$acos($rb_divide(self.$inner_product(v), prod));
+    }, 1);
     
-    Opal.def(self, '$covector', $Vector_covector$248 = function $$covector() {
+    $def(self, '$covector', function $$covector() {
       var self = this;
 
-      return $$($nesting, 'Matrix').$row_vector(self)
-    }, $Vector_covector$248.$$arity = 0);
+      return $$('Matrix').$row_vector(self)
+    }, 0);
     
-    Opal.def(self, '$to_a', $Vector_to_a$249 = function $$to_a() {
+    $def(self, '$to_a', function $$to_a() {
       var self = this;
 
       return self.elements.$dup()
-    }, $Vector_to_a$249.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_matrix', $Vector_to_matrix$250 = function $$to_matrix() {
+    $def(self, '$to_matrix', function $$to_matrix() {
       var self = this;
 
-      return $$($nesting, 'Matrix').$column_vector(self)
-    }, $Vector_to_matrix$250.$$arity = 0);
+      return $$('Matrix').$column_vector(self)
+    }, 0);
     
-    Opal.def(self, '$elements_to_f', $Vector_elements_to_f$251 = function $$elements_to_f() {
+    $def(self, '$elements_to_f', function $$elements_to_f() {
       var self = this;
 
       
       self.$warn("Vector#elements_to_f is deprecated", $hash2(["uplevel"], {"uplevel": 1}));
       return $send(self, 'map', [], "to_f".$to_proc());
-    }, $Vector_elements_to_f$251.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$elements_to_i', $Vector_elements_to_i$252 = function $$elements_to_i() {
+    $def(self, '$elements_to_i', function $$elements_to_i() {
       var self = this;
 
       
       self.$warn("Vector#elements_to_i is deprecated", $hash2(["uplevel"], {"uplevel": 1}));
       return $send(self, 'map', [], "to_i".$to_proc());
-    }, $Vector_elements_to_i$252.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$elements_to_r', $Vector_elements_to_r$253 = function $$elements_to_r() {
+    $def(self, '$elements_to_r', function $$elements_to_r() {
       var self = this;
 
       
       self.$warn("Vector#elements_to_r is deprecated", $hash2(["uplevel"], {"uplevel": 1}));
       return $send(self, 'map', [], "to_r".$to_proc());
-    }, $Vector_elements_to_r$253.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$coerce', $Vector_coerce$254 = function $$coerce(other) {
-      var self = this, $case = nil;
+    $def(self, '$coerce', function $$coerce(other) {
+      var self = this, $ret_or_1 = nil;
 
-      return (function() {$case = other;
-      if ($$($nesting, 'Numeric')['$===']($case)) {return [$$$($$($nesting, 'Matrix'), 'Scalar').$new(other), self]}
-      else {return self.$raise($$($nesting, 'TypeError'), "" + (self.$class()) + " can't be coerced into " + (other.$class()))}})()
-    }, $Vector_coerce$254.$$arity = 1);
+      if ($eqeqeq($$('Numeric'), ($ret_or_1 = other))) {
+        return [$$$($$('Matrix'), 'Scalar').$new(other), self]
+      } else {
+        return self.$raise($$('TypeError'), "" + (self.$class()) + " can't be coerced into " + (other.$class()))
+      }
+    }, 1);
     
-    Opal.def(self, '$to_s', $Vector_to_s$255 = function $$to_s() {
+    $def(self, '$to_s', function $$to_s() {
       var self = this;
 
       return $rb_plus($rb_plus("Vector[", self.elements.$join(", ")), "]")
-    }, $Vector_to_s$255.$$arity = 0);
-    return (Opal.def(self, '$inspect', $Vector_inspect$256 = function $$inspect() {
+    }, 0);
+    return $def(self, '$inspect', function $$inspect() {
       var self = this;
 
       return $rb_plus("Vector", self.elements.$inspect())
-    }, $Vector_inspect$256.$$arity = 0), nil) && 'inspect';
+    }, 0);
   })($nesting[0], null, $nesting);
 };
diff --git a/opal/master/matrix.min.js b/opal/master/matrix.min.js
index 48212eaf..cea570e6 100644
--- a/opal/master/matrix.min.js
+++ b/opal/master/matrix.min.js
@@ -1 +1 @@
-Opal.modules.e2mmap=function(Opal){function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$send2=Opal.send2,$find_super=Opal.find_super,$truthy=Opal.truthy,$send=Opal.send,$alias=Opal.alias,$hash2=Opal.hash2,$gvars=Opal.gvars;return Opal.add_stubs(["$<","$bind","$module_eval","$Raise","$class","$extend","$def_e2message","$def_exception","$instance_eval","$[]=","$-","$new","$const_defined?","$remove_const","$const_set","$e2mm_message","$nil?","$caller","$=~","$[]","$quote","$shift","$raise","$sprintf","$Fail","$inspect","$each","$ancestors"]),function(self,$Exception2MessageMapper_e2mm_message$15){var $Exception2MessageMapper_extend_object$1,self=$module(self,"Exception2MessageMapper"),$nesting=[self].concat($Exception2MessageMapper_e2mm_message$15);return Opal.const_set($nesting[0],"E2MM",$$($nesting,"Exception2MessageMapper")),Opal.defs($$($nesting,"E2MM"),"$extend_object",$Exception2MessageMapper_extend_object$1=function(cl){var $zuper_ii,lhs,rhs=$Exception2MessageMapper_extend_object$1.$$p,$zuper=nil,$zuper_i=nil;for(rhs&&($Exception2MessageMapper_extend_object$1.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return $send2(this,$find_super(this,"extend_object",$Exception2MessageMapper_extend_object$1,!1,!0),"extend_object",$zuper,rhs),$truthy((lhs=cl,rhs=$$($nesting,"E2MM"),"number"==typeof lhs&&"number"==typeof rhs?lhs<rhs:lhs["$<"](rhs)))?nil:cl.$bind(this)},$Exception2MessageMapper_extend_object$1.$$arity=1),Opal.def(self,"$bind",$Exception2MessageMapper_e2mm_message$15=function(){var $$3;return $send(this,"module_eval",[],(($$3=function(){var $Raise$4,$included$5=null==$$3.$$s?this:$$3.$$s;return Opal.def($included$5,"$Raise",$Raise$4=function($a,$b){var err,rest=Opal.slice.call(arguments,0,arguments.length);return 0<rest.length&&(err=rest[0],rest.splice(0,1)),null==err&&(err=nil),rest=rest,$send($$($nesting,"Exception2MessageMapper"),"Raise",[this.$class(),err].concat(Opal.to_a(rest)))},$Raise$4.$$arity=-1),$alias($included$5,"Fail","Raise"),function(self,$parent_nesting){[self].concat($parent_nesting),Opal.udef(self,"$included")}(Opal.get_singleton_class($included$5),$nesting),Opal.defs($included$5,"$included",$included$5=function(mod){return mod.$extend($$($nesting,"Exception2MessageMapper"))},$included$5.$$arity=1),nil&&"included"}).$$s=this,$$3.$$arity=0,$$3))},$Exception2MessageMapper_e2mm_message$15.$$arity=1),Opal.def(self,"$Raise",$Exception2MessageMapper_e2mm_message$15=function($a,$b){var err,self=this,rest=Opal.slice.call(arguments,0,arguments.length);return 0<rest.length&&(err=rest[0],rest.splice(0,1)),null==err&&(err=nil),rest=rest,$send($$($nesting,"E2MM"),"Raise",[self,err].concat(Opal.to_a(rest)))},$Exception2MessageMapper_e2mm_message$15.$$arity=-1),$alias(self,"Fail","Raise"),$alias(self,"fail","Raise"),Opal.def(self,"$def_e2message",$Exception2MessageMapper_e2mm_message$15=function(c,m){return $$($nesting,"E2MM").$def_e2message(this,c,m)},$Exception2MessageMapper_e2mm_message$15.$$arity=2),Opal.def(self,"$def_exception",$Exception2MessageMapper_e2mm_message$15=function(n,m,s){return null==s&&(s=$$($nesting,"StandardError")),$$($nesting,"E2MM").$def_exception(this,n,m,s)},$Exception2MessageMapper_e2mm_message$15.$$arity=-3),self.MessageMap=$hash2([],{}),Opal.defs($$($nesting,"E2MM"),"$def_e2message",$Exception2MessageMapper_e2mm_message$15=function(k,c,m){var $$10;return $send($$($nesting,"E2MM"),"instance_eval",[],(($$10=function(){var $writer,self=null==$$10.$$s?this:$$10.$$s;return null==self.MessageMap&&(self.MessageMap=nil),$writer=[[k,c],m],$send(self.MessageMap,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]}).$$s=this,$$10.$$arity=0,$$10)),c},$Exception2MessageMapper_e2mm_message$15.$$arity=3),Opal.defs($$($nesting,"E2MM"),"$def_exception",$Exception2MessageMapper_e2mm_message$15=function(k,n,m,s){var $$12,$$13,e;return null==s&&(s=$$($nesting,"StandardError")),e=$$($nesting,"Class").$new(s),$send($$($nesting,"E2MM"),"instance_eval",[],(($$12=function(){var $writer,self=null==$$12.$$s?this:$$12.$$s;return null==self.MessageMap&&(self.MessageMap=nil),$writer=[[k,e],m],$send(self.MessageMap,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]}).$$s=this,$$12.$$arity=0,$$12)),$truthy(k["$const_defined?"](n,!1))&&$send(k,"module_eval",[],(($$13=function(){return(null==$$13.$$s?this:$$13.$$s).$remove_const(n)}).$$s=this,$$13.$$arity=0,$$13)),k.$const_set(n,e)},$Exception2MessageMapper_e2mm_message$15.$$arity=-4),Opal.defs($$($nesting,"E2MM"),"$Raise",$Exception2MessageMapper_e2mm_message$15=function($a,$b,$c){var klass,err,rest,self=this,form=nil,b=nil;return 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null==e&&(e=nil),e.$round(ndigits)}),1)}),-1),$def(self,"$size",(function(){return this.elements.$size()}),0),$def(self,"$each",(function $$each(){var block=$$each.$$p||nil;return delete $$each.$$p,block===nil?this.$to_enum("each"):($send(this.elements,"each",[],block.$to_proc()),this)}),0),$def(self,"$each2",(function $$each2(v){var $yield=$$each2.$$p||nil;return delete $$each2.$$p,$truthy(v["$kind_of?"]($$("Integer")))&&this.$raise($$("TypeError"),"Integer is not like Vector"),$neqeq(this.$size(),v.$size())&&$$("Vector").$Raise($$("ErrDimensionMismatch")),$yield===nil?this.$to_enum("each2",v):($send(this.$size(),"times",[],(function $$142(i){var self=null==$$142.$$s?this:$$142.$$s;return null==self.elements&&(self.elements=nil),null==i&&(i=nil),Opal.yieldX($yield,[self.elements["$[]"](i),v["$[]"](i)])}),{$$arity:1,$$s:this}),this)}),1),$def(self,"$collect2",(function $$collect2(v){var $yield=$$collect2.$$p||nil;return delete $$collect2.$$p,$truthy(v["$kind_of?"]($$("Integer")))&&this.$raise($$("TypeError"),"Integer is not like Vector"),$neqeq(this.$size(),v.$size())&&$$("Vector").$Raise($$("ErrDimensionMismatch")),$yield===nil?this.$to_enum("collect2",v):$send($$("Array"),"new",[this.$size()],(function $$143(i){var self=null==$$143.$$s?this:$$143.$$s;return null==self.elements&&(self.elements=nil),null==i&&(i=nil),Opal.yieldX($yield,[self.elements["$[]"](i),v["$[]"](i)])}),{$$arity:1,$$s:this})}),1),$defs($$("Vector"),"$independent?",(function($a){var $post_args,vs,self=this;return $post_args=Opal.slice.call(arguments),$send(vs=$post_args,"each",[],(function $$145(v){var self=null==$$145.$$s?this:$$145.$$s;return null==v&&(v=nil),$truthy(v["$is_a?"]($$("Vector")))||self.$raise($$("TypeError"),"expected Vector, got "+v.$class()),$eqeq(v.$size(),vs.$first().$size())?nil:$$("Vector").$Raise($$("ErrDimensionMismatch"))}),{$$arity:1,$$s:self}),!$truthy($rb_gt(vs.$count(),vs.$first().$size()))&&$send($$("Matrix"),"[]",$to_a(vs)).$rank()["$eql?"](vs.$count())}),-1),$def(self,"$independent?",(function($a){var vs,self=this;return vs=Opal.slice.call(arguments),$send(self.$class(),"independent?",[self].concat($to_a(vs)))}),-1),$def(self,"$zero?",(function(){return $send(this,"all?",[],"zero?".$to_proc())}),0),$def(self,"$==",(function(other){return!!$eqeqeq($$("Vector"),other)&&this.elements["$=="](other.$elements())}),1),$def(self,"$eql?",(function(other){return!!$eqeqeq($$("Vector"),other)&&this.elements["$eql?"](other.$elements())}),1),$def(self,"$clone",(function(){return this.$class().$elements(this.elements)}),0),$def(self,"$hash",(function(){return this.elements.$hash()}),0),$def(self,"$*",(function(x){var $ret_or_1,els=nil;return $eqeqeq($$("Numeric"),$ret_or_1=x)?(els=$send(this.elements,"collect",[],(function(e){return null==e&&(e=nil),$rb_times(e,x)}),1),this.$class().$elements(els,!1)):$eqeqeq($$("Matrix"),$ret_or_1)?$rb_times($$("Matrix").$column_vector(this),x):$eqeqeq($$("Vector"),$ret_or_1)?$$("Vector").$Raise($$("ErrOperationNotDefined"),"*",this.$class(),x.$class()):this.$apply_through_coercion(x,"*")}),1),$def(self,"$+",(function(v){var $ret_or_1,els=nil;return $eqeqeq($$("Vector"),$ret_or_1=v)?($neqeq(this.$size(),v.$size())&&$$("Vector").$Raise($$("ErrDimensionMismatch")),els=$send(this,"collect2",[v],(function(v1,v2){return null==v1&&(v1=nil),null==v2&&(v2=nil),$rb_plus(v1,v2)}),2),this.$class().$elements(els,!1)):$eqeqeq($$("Matrix"),$ret_or_1)?$rb_plus($$("Matrix").$column_vector(this),v):this.$apply_through_coercion(v,"+")}),1),$def(self,"$-",(function(v){var $ret_or_1,els=nil;return $eqeqeq($$("Vector"),$ret_or_1=v)?($neqeq(this.$size(),v.$size())&&$$("Vector").$Raise($$("ErrDimensionMismatch")),els=$send(this,"collect2",[v],(function(v1,v2){return null==v1&&(v1=nil),null==v2&&(v2=nil),$rb_minus(v1,v2)}),2),this.$class().$elements(els,!1)):$eqeqeq($$("Matrix"),$ret_or_1)?$rb_minus($$("Matrix").$column_vector(this),v):this.$apply_through_coercion(v,"-")}),1),$def(self,"$/",(function(x){var $ret_or_1,els=nil;return $eqeqeq($$("Numeric"),$ret_or_1=x)?(els=$send(this.elements,"collect",[],(function(e){return null==e&&(e=nil),$rb_divide(e,x)}),1),this.$class().$elements(els,!1)):$eqeqeq($$("Matrix"),$ret_or_1)||$eqeqeq($$("Vector"),$ret_or_1)?$$("Vector").$Raise($$("ErrOperationNotDefined"),"/",this.$class(),x.$class()):this.$apply_through_coercion(x,"/")}),1),$def(self,"$+@",(function(){return this}),0),$def(self,"$-@",(function(){return $send(this,"collect",[],(function(e){return null==e&&(e=nil),e["$-@"]()}),1)}),0),$def(self,"$inner_product",(function(v){var p=nil;return $neqeq(this.$size(),v.$size())&&$$("Vector").$Raise($$("ErrDimensionMismatch")),p=0,$send(this,"each2",[v],(function(v1,v2){return null==v1&&(v1=nil),null==v2&&(v2=nil),p=$rb_plus(p,$rb_times(v1,v2.$conj()))}),2),p}),1),self.$alias_method("dot","inner_product"),$def(self,"$cross_product",(function($a){var vs,self=this,$ret_or_1=nil,v=nil,rows=nil;return vs=Opal.slice.call(arguments),$truthy($rb_ge(self.$size(),2))||self.$raise($$("ErrOperationNotDefined"),"cross product is not defined on vectors of dimension "+self.$size()),$eqeq(vs.$size(),$rb_minus(self.$size(),2))||self.$raise($$("ArgumentError"),"wrong number of arguments ("+vs.$size()+" for "+$rb_minus(self.$size(),2)+")"),$send(vs,"each",[],(function $$162(v){var self=null==$$162.$$s?this:$$162.$$s;return null==v&&(v=nil),$truthy(v["$is_a?"]($$("Vector")))||self.$raise($$("TypeError"),"expected Vector, got "+v.$class()),$eqeq(v.$size(),self.$size())?nil:$$("Vector").$Raise($$("ErrDimensionMismatch"))}),{$$arity:1,$$s:self}),$eqeqeq(2,$ret_or_1=self.$size())?$$("Vector")["$[]"](self.elements["$[]"](1)["$-@"](),self.elements["$[]"](0)):$eqeqeq(3,$ret_or_1)?(v=vs["$[]"](0),$$("Vector")["$[]"]($rb_minus($rb_times(v["$[]"](2),self.elements["$[]"](1)),$rb_times(v["$[]"](1),self.elements["$[]"](2))),$rb_minus($rb_times(v["$[]"](0),self.elements["$[]"](2)),$rb_times(v["$[]"](2),self.elements["$[]"](0))),$rb_minus($rb_times(v["$[]"](1),self.elements["$[]"](0)),$rb_times(v["$[]"](0),self.elements["$[]"](1))))):(rows=[self].concat($to_a(vs)).concat([$send($$("Array"),"new",[self.$size()],(function $$163(i){var self=null==$$163.$$s?this:$$163.$$s;return null==i&&(i=nil),$$("Vector").$basis($hash2(["size","index"],{size:self.$size(),index:i}))}),{$$arity:1,$$s:self})]),$$("Matrix").$rows(rows).$laplace_expansion($hash2(["row"],{row:$rb_minus(self.$size(),1)})))}),-1),self.$alias_method("cross","cross_product"),$def(self,"$collect",(function $$collect(){var els,block=$$collect.$$p||nil;return delete $$collect.$$p,block===nil?this.$to_enum("collect"):(els=$send(this.elements,"collect",[],block.$to_proc()),this.$class().$elements(els,!1))}),0),$alias(self,"map","collect"),$def(self,"$magnitude",(function(){return $$("Math").$sqrt($send(this.elements,"inject",[0],(function(v,e){return null==v&&(v=nil),null==e&&(e=nil),$rb_plus(v,e.$abs2())}),2))}),0),$alias(self,"r","magnitude"),$alias(self,"norm","magnitude"),$def(self,"$map2",(function $$map2(v){var els,block=$$map2.$$p||nil;return delete $$map2.$$p,block===nil?this.$to_enum("map2",v):(els=$send(this,"collect2",[v],block.$to_proc()),this.$class().$elements(els,!1))}),1),$klass($nesting[0],$$("StandardError"),"ZeroVectorError"),$def(self,"$normalize",(function(){var n;return n=this.$magnitude(),$eqeq(n,0)&&this.$raise($$("ZeroVectorError"),"Zero vectors can not be normalized"),$rb_divide(this,n)}),0),$def(self,"$angle_with",(function(v){var prod;return $truthy(v["$is_a?"]($$("Vector")))||this.$raise($$("TypeError"),"Expected a Vector, got a "+v.$class()),$neqeq(this.$size(),v.$size())&&$$("Vector").$Raise($$("ErrDimensionMismatch")),prod=$rb_times(this.$magnitude(),v.$magnitude()),$eqeq(prod,0)&&this.$raise($$("ZeroVectorError"),"Can't get angle of zero vector"),$$("Math").$acos($rb_divide(this.$inner_product(v),prod))}),1),$def(self,"$covector",(function(){return $$("Matrix").$row_vector(this)}),0),$def(self,"$to_a",(function(){return this.elements.$dup()}),0),$def(self,"$to_matrix",(function(){return $$("Matrix").$column_vector(this)}),0),$def(self,"$elements_to_f",(function(){return this.$warn("Vector#elements_to_f is deprecated",$hash2(["uplevel"],{uplevel:1})),$send(this,"map",[],"to_f".$to_proc())}),0),$def(self,"$elements_to_i",(function(){return this.$warn("Vector#elements_to_i is deprecated",$hash2(["uplevel"],{uplevel:1})),$send(this,"map",[],"to_i".$to_proc())}),0),$def(self,"$elements_to_r",(function(){return this.$warn("Vector#elements_to_r is deprecated",$hash2(["uplevel"],{uplevel:1})),$send(this,"map",[],"to_r".$to_proc())}),0),$def(self,"$coerce",(function(other){return $eqeqeq($$("Numeric"),other)?[$$$($$("Matrix"),"Scalar").$new(other),this]:this.$raise($$("TypeError"),this.$class()+" can't be coerced into "+other.$class())}),1),$def(self,"$to_s",(function(){return $rb_plus($rb_plus("Vector[",this.elements.$join(", ")),"]")}),0),$def(self,"$inspect",(function(){return $rb_plus("Vector",this.elements.$inspect())}),0)}($nesting[0],0,$nesting)};
diff --git a/opal/master/matrix.min.js.gz b/opal/master/matrix.min.js.gz
index aaa2f622..0a37398a 100644
Binary files a/opal/master/matrix.min.js.gz and b/opal/master/matrix.min.js.gz differ
diff --git a/opal/master/nashorn.js b/opal/master/nashorn.js
index 4e9f62c9..c140e90c 100644
--- a/opal/master/nashorn.js
+++ b/opal/master/nashorn.js
@@ -1,39 +1,325 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["nashorn/io"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $send = Opal.send, $gvars = Opal.gvars, $writer = nil;
+Opal.modules["nashorn/io"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var nil = Opal.nil, $send = Opal.send, $gvars = Opal.gvars, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $writer = nil;
   if ($gvars.stdout == null) $gvars.stdout = nil;
   if ($gvars.stderr == null) $gvars.stderr = nil;
 
-  Opal.add_stubs(['$write_proc=', '$-']);
+  Opal.add_stubs('write_proc=,-');
   
   
   $writer = [function(s){print(s)}];
-  $send($gvars.stdout, 'write_proc=', Opal.to_a($writer));
+  $send($gvars.stdout, 'write_proc=', $to_a($writer));
   $writer[$rb_minus($writer["length"], 1)];;
   
   $writer = [function(s){print(s)}];
-  $send($gvars.stderr, 'write_proc=', Opal.to_a($writer));
+  $send($gvars.stderr, 'write_proc=', $to_a($writer));
   return $writer[$rb_minus($writer["length"], 1)];;
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["nashorn/file"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass;
+Opal.modules["corelib/file"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $truthy = Opal.truthy, $klass = Opal.klass, $const_set = Opal.const_set, $Opal = Opal.Opal, $regexp = Opal.regexp, $rb_plus = Opal.rb_plus, $def = Opal.def, $Kernel = Opal.Kernel, $eqeq = Opal.eqeq, $rb_lt = Opal.rb_lt, $rb_minus = Opal.rb_minus, $range = Opal.range, $send = Opal.send, $alias = Opal.alias;
 
-  
-  /* global Java */;
+  Opal.add_stubs('respond_to?,to_path,coerce_to!,pwd,split,sub,+,unshift,join,home,raise,start_with?,absolute_path,==,<,dirname,-,basename,empty?,rindex,[],length,nil?,gsub,find,=~,map,each_with_index,flatten,reject,to_proc,end_with?');
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'File');
 
-    var $nesting = [self].concat($parent_nesting), $File_read$1, $File_file$ques$2, $File_readable$ques$3;
+    var $nesting = [self].concat($parent_nesting), windows_root_rx = nil;
 
     
-    Opal.defs(self, '$read', $File_read$1 = function $$read(path) {
-      var self = this;
+    $const_set($nesting[0], 'Separator', $const_set($nesting[0], 'SEPARATOR', "/"));
+    $const_set($nesting[0], 'ALT_SEPARATOR', nil);
+    $const_set($nesting[0], 'PATH_SEPARATOR', ":");
+    $const_set($nesting[0], 'FNM_SYSCASE', 0);
+    windows_root_rx = /^[a-zA-Z]:(?:\\|\/)/;
+    return (function(self, $parent_nesting) {
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+      
+      
+      $def(self, '$absolute_path', function $$absolute_path(path, basedir) {
+        var sep = nil, sep_chars = nil, new_parts = nil, $ret_or_1 = nil, path_abs = nil, basedir_abs = nil, parts = nil, leading_sep = nil, abs = nil, new_path = nil;
+
+        
+        
+        if (basedir == null) basedir = nil;;
+        sep = $$('SEPARATOR');
+        sep_chars = $sep_chars();
+        new_parts = [];
+        path = ($truthy(path['$respond_to?']("to_path")) ? (path.$to_path()) : (path));
+        path = $Opal['$coerce_to!'](path, $$$('String'), "to_str");
+        basedir = ($truthy(($ret_or_1 = basedir)) ? ($ret_or_1) : ($$$('Dir').$pwd()));
+        path_abs = path.substr(0, sep.length) === sep || windows_root_rx.test(path);
+        basedir_abs = basedir.substr(0, sep.length) === sep || windows_root_rx.test(basedir);
+        if ($truthy(path_abs)) {
+          
+          parts = path.$split($regexp(["[", sep_chars, "]"]));
+          leading_sep = windows_root_rx.test(path) ? '' : path.$sub($regexp(["^([", sep_chars, "]+).*$"]), "\\1");
+          abs = true;
+        } else {
+          
+          parts = $rb_plus(basedir.$split($regexp(["[", sep_chars, "]"])), path.$split($regexp(["[", sep_chars, "]"])));
+          leading_sep = windows_root_rx.test(basedir) ? '' : basedir.$sub($regexp(["^([", sep_chars, "]+).*$"]), "\\1");
+          abs = basedir_abs;
+        };
+        
+        var part;
+        for (var i = 0, ii = parts.length; i < ii; i++) {
+          part = parts[i];
+
+          if (
+            (part === nil) ||
+            (part === ''  && ((new_parts.length === 0) || abs)) ||
+            (part === '.' && ((new_parts.length === 0) || abs))
+          ) {
+            continue;
+          }
+          if (part === '..') {
+            new_parts.pop();
+          } else {
+            new_parts.push(part);
+          }
+        }
+
+        if (!abs && parts[0] !== '.') {
+          new_parts.$unshift(".")
+        }
+      ;
+        new_path = new_parts.$join(sep);
+        if ($truthy(abs)) {
+          new_path = $rb_plus(leading_sep, new_path)
+        };
+        return new_path;
+      }, -2);
+      
+      $def(self, '$expand_path', function $$expand_path(path, basedir) {
+        var self = this, sep = nil, sep_chars = nil, home = nil, leading_sep = nil, home_path_regexp = nil;
+
+        
+        
+        if (basedir == null) basedir = nil;;
+        sep = $$('SEPARATOR');
+        sep_chars = $sep_chars();
+        if ($truthy(path[0] === '~' || (basedir && basedir[0] === '~'))) {
+          
+          home = $$('Dir').$home();
+          if (!$truthy(home)) {
+            $Kernel.$raise($$$('ArgumentError'), "couldn't find HOME environment -- expanding `~'")
+          };
+          leading_sep = windows_root_rx.test(home) ? '' : home.$sub($regexp(["^([", sep_chars, "]+).*$"]), "\\1");
+          if (!$truthy(home['$start_with?'](leading_sep))) {
+            $Kernel.$raise($$$('ArgumentError'), "non-absolute home")
+          };
+          home = $rb_plus(home, sep);
+          home_path_regexp = $regexp(["^\\~(?:", sep, "|$)"]);
+          path = path.$sub(home_path_regexp, home);
+          if ($truthy(basedir)) {
+            basedir = basedir.$sub(home_path_regexp, home)
+          };
+        };
+        return self.$absolute_path(path, basedir);
+      }, -2);
+      
+      // Coerce a given path to a path string using #to_path and #to_str
+      function $coerce_to_path(path) {
+        if ($truthy((path)['$respond_to?']("to_path"))) {
+          path = path.$to_path();
+        }
+
+        path = $Opal['$coerce_to!'](path, $$$('String'), "to_str");
+
+        return path;
+      }
 
+      // Return a RegExp compatible char class
+      function $sep_chars() {
+        if ($$('ALT_SEPARATOR') === nil) {
+          return Opal.escape_regexp($$('SEPARATOR'));
+        } else {
+          return Opal.escape_regexp($rb_plus($$('SEPARATOR'), $$('ALT_SEPARATOR')));
+        }
+      }
+    ;
+      
+      $def(self, '$dirname', function $$dirname(path, level) {
+        var self = this, sep_chars = nil;
+
+        
+        
+        if (level == null) level = 1;;
+        if ($eqeq(level, 0)) {
+          return path
+        };
+        if ($truthy($rb_lt(level, 0))) {
+          $Kernel.$raise($$$('ArgumentError'), "level can't be negative")
+        };
+        sep_chars = $sep_chars();
+        path = $coerce_to_path(path);
+        
+        var absolute = path.match(new RegExp("^[" + (sep_chars) + "]")), out;
+
+        path = path.replace(new RegExp("[" + (sep_chars) + "]+$"), ''); // remove trailing separators
+        path = path.replace(new RegExp("[^" + (sep_chars) + "]+$"), ''); // remove trailing basename
+        path = path.replace(new RegExp("[" + (sep_chars) + "]+$"), ''); // remove final trailing separators
+
+        if (path === '') {
+          out = absolute ? '/' : '.';
+        }
+        else {
+          out = path;
+        }
+
+        if (level == 1) {
+          return out;
+        }
+        else {
+          return self.$dirname(out, $rb_minus(level, 1))
+        }
+      ;
+      }, -2);
+      
+      $def(self, '$basename', function $$basename(name, suffix) {
+        var sep_chars = nil;
+
+        
+        
+        if (suffix == null) suffix = nil;;
+        sep_chars = $sep_chars();
+        name = $coerce_to_path(name);
+        
+        if (name.length == 0) {
+          return name;
+        }
+
+        if (suffix !== nil) {
+          suffix = $Opal['$coerce_to!'](suffix, $$$('String'), "to_str")
+        } else {
+          suffix = null;
+        }
+
+        name = name.replace(new RegExp("(.)[" + (sep_chars) + "]*$"), '$1');
+        name = name.replace(new RegExp("^(?:.*[" + (sep_chars) + "])?([^" + (sep_chars) + "]+)$"), '$1');
+
+        if (suffix === ".*") {
+          name = name.replace(/\.[^\.]+$/, '');
+        } else if(suffix !== null) {
+          suffix = Opal.escape_regexp(suffix);
+          name = name.replace(new RegExp("" + (suffix) + "$"), '');
+        }
+
+        return name;
+      ;
+      }, -2);
+      
+      $def(self, '$extname', function $$extname(path) {
+        var self = this, filename = nil, last_dot_idx = nil;
+
+        
+        path = $coerce_to_path(path);
+        filename = self.$basename(path);
+        if ($truthy(filename['$empty?']())) {
+          return ""
+        };
+        last_dot_idx = filename['$[]']($range(1, -1, false)).$rindex(".");
+        if (($truthy(last_dot_idx['$nil?']()) || ($eqeq($rb_plus(last_dot_idx, 1), $rb_minus(filename.$length(), 1))))) {
+          return ""
+        } else {
+          return filename['$[]'](Opal.Range.$new($rb_plus(last_dot_idx, 1), -1, false))
+        };
+      }, 1);
+      
+      $def(self, '$exist?', function $exist$ques$1(path) {
+        
+        return Opal.modules[path] != null
+      }, 1);
+      
+      $def(self, '$directory?', function $directory$ques$2(path) {
+        var files = nil, file = nil;
+
+        
+        files = [];
+        
+        for (var key in Opal.modules) {
+          files.push(key)
+        }
+      ;
+        path = path.$gsub($regexp(["(^.", $$('SEPARATOR'), "+|", $$('SEPARATOR'), "+$)"]));
+        file = $send(files, 'find', [], function $$3(f){
+          
+          
+          if (f == null) f = nil;;
+          return f['$=~']($regexp(["^", path]));}, 1);
+        return file;
+      }, 1);
+      
+      $def(self, '$join', function $$join($a) {
+        var $post_args, paths, result = nil;
+
+        
+        
+        $post_args = Opal.slice.call(arguments);
+        
+        paths = $post_args;;
+        if ($truthy(paths['$empty?']())) {
+          return ""
+        };
+        result = "";
+        paths = $send(paths.$flatten().$each_with_index(), 'map', [], function $$4(item, index){
+          
+          
+          if (item == null) item = nil;;
+          
+          if (index == null) index = nil;;
+          if (($eqeq(index, 0) && ($truthy(item['$empty?']())))) {
+            return $$('SEPARATOR')
+          } else if (($eqeq(paths.$length(), $rb_plus(index, 1)) && ($truthy(item['$empty?']())))) {
+            return $$('SEPARATOR')
+          } else {
+            return item
+          };}, 2);
+        paths = $send(paths, 'reject', [], "empty?".$to_proc());
+        $send(paths, 'each_with_index', [], function $$5(item, index){var next_item = nil;
+
+          
+          
+          if (item == null) item = nil;;
+          
+          if (index == null) index = nil;;
+          next_item = paths['$[]']($rb_plus(index, 1));
+          if ($truthy(next_item['$nil?']())) {
+            return (result = "" + (result) + (item))
+          } else {
+            
+            if (($truthy(item['$end_with?']($$('SEPARATOR'))) && ($truthy(next_item['$start_with?']($$('SEPARATOR')))))) {
+              item = item.$sub($regexp([$$('SEPARATOR'), "+$"]), "")
+            };
+            return (result = (($truthy(item['$end_with?']($$('SEPARATOR'))) || ($truthy(next_item['$start_with?']($$('SEPARATOR'))))) ? ("" + (result) + (item)) : ("" + (result) + (item) + ($$('SEPARATOR')))));
+          };}, 2);
+        return result;
+      }, -1);
+      
+      $def(self, '$split', function $$split(path) {
+        
+        return path.$split($$('SEPARATOR'))
+      }, 1);
+      $alias(self, "realpath", "expand_path");
+      return $alias(self, "exists?", "exist?");
+    })(Opal.get_singleton_class(self), $nesting);
+  })('::', $$$('IO'), $nesting)
+};
+
+Opal.modules["nashorn/file"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $klass = Opal.klass, $defs = Opal.defs;
+
+  Opal.add_stubs('require');
+  
+  /* global Java */;
+  self.$require("corelib/file");
+  return (function($base, $super) {
+    var self = $klass($base, $super, 'File');
+
+    
+    
+    $defs(self, '$read', function $$read(path) {
+      
       
         var Paths = Java.type('java.nio.file.Paths');
         var Files = Java.type('java.nio.file.Files');
@@ -42,39 +328,30 @@ Opal.modules["nashorn/file"] = function(Opal) {
         lines.forEach(function(line) { data.push(line); });
         return data.join("\n");
       
-    }, $File_read$1.$$arity = 1);
-    Opal.defs(self, '$file?', $File_file$ques$2 = function(path) {
-      var self = this;
-
+    }, 1);
+    $defs(self, '$file?', function $File_file$ques$1(path) {
+      
       
       var Files = Java.type('java.nio.file.Files');
       return Files.exists(path) && Files.isRegularFile(path);
     
-    }, $File_file$ques$2.$$arity = 1);
-    return (Opal.defs(self, '$readable?', $File_readable$ques$3 = function(path) {
-      var self = this;
-
+    }, 1);
+    return $defs(self, '$readable?', function $File_readable$ques$2(path) {
+      
       
       var Files = Java.type('java.nio.file.Files');
       return Files.exists(path) && Files.isReadable(path);
     
-    }, $File_readable$ques$3.$$arity = 1), nil) && 'readable?';
-  })($nesting[0], null, $nesting);
+    }, 1);
+  })($nesting[0], null);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["nashorn"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module;
+Opal.modules["nashorn"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module;
 
-  Opal.add_stubs(['$require']);
+  Opal.add_stubs('require');
   
-  (function($base, $parent_nesting) {
-    var self = $module($base, 'Nashorn');
-
-    var $nesting = [self].concat($parent_nesting);
-
-    return nil
-  })($nesting[0], $nesting);
+  $module($nesting[0], 'Nashorn');
   self.$require("nashorn/io");
   return self.$require("nashorn/file");
 };
diff --git a/opal/master/nashorn.min.js b/opal/master/nashorn.min.js
index f4ab4f27..d8830b56 100644
--- a/opal/master/nashorn.min.js
+++ b/opal/master/nashorn.min.js
@@ -1 +1 @@
-Opal.modules["nashorn/io"]=function(Opal){function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}Opal.top;var $writer,nil=Opal.nil,$send=(Opal.$$$,Opal.$$,Opal.send),$gvars=Opal.gvars;return null==$gvars.stdout&&($gvars.stdout=nil),null==$gvars.stderr&&($gvars.stderr=nil),Opal.add_stubs(["$write_proc=","$-"]),$writer=[function(s){print(s)}],$send($gvars.stdout,"write_proc=",Opal.to_a($writer)),$rb_minus($writer.length,1),$writer=[function(s){print(s)}],$send($gvars.stderr,"write_proc=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]},Opal.modules["nashorn/file"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$klass=(Opal.$$$,Opal.$$,Opal.klass);return function($File_readable$ques$3,$File_file$ques$2){$File_readable$ques$3=$klass($File_readable$ques$3,null,"File"),[$File_readable$ques$3].concat($File_file$ques$2);return Opal.defs($File_readable$ques$3,"$read",$File_file$ques$2=function(lines){var Paths=Java.type("java.nio.file.Paths"),lines=Java.type("java.nio.file.Files").readAllLines(Paths.get(lines),Java.type("java.nio.charset.StandardCharsets").UTF_8),data=[];return lines.forEach(function(line){data.push(line)}),data.join("\n")},$File_file$ques$2.$$arity=1),Opal.defs($File_readable$ques$3,"$file?",$File_file$ques$2=function(path){var Files=Java.type("java.nio.file.Files");return Files.exists(path)&&Files.isRegularFile(path)},$File_file$ques$2.$$arity=1),Opal.defs($File_readable$ques$3,"$readable?",$File_readable$ques$3=function(path){var Files=Java.type("java.nio.file.Files");return Files.exists(path)&&Files.isReadable(path)},$File_readable$ques$3.$$arity=1),nil&&"readable?"}($nesting[0],$nesting)},Opal.modules.nashorn=function(Opal){var self=Opal.top,$parent_nesting=[],$module=(Opal.nil,Opal.$$$,Opal.$$,Opal.module);return Opal.add_stubs(["$require"]),[$module(($parent_nesting=$parent_nesting)[0],"Nashorn")].concat($parent_nesting),self.$require("nashorn/io"),self.$require("nashorn/file")};
+Opal.modules["nashorn/io"]=function(Opal){var nil=Opal.nil,$send=Opal.send,$gvars=Opal.gvars,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$writer=nil;return null==$gvars.stdout&&($gvars.stdout=nil),null==$gvars.stderr&&($gvars.stderr=nil),Opal.add_stubs("write_proc=,-"),$writer=[function(s){print(s)}],$send($gvars.stdout,"write_proc=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],$writer=[function(s){print(s)}],$send($gvars.stderr,"write_proc=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]},Opal.modules["corelib/file"]=function(Opal){var nil=Opal.nil,$$$=Opal.$$$,$truthy=Opal.truthy,$klass=Opal.klass,$const_set=Opal.const_set,$Opal=Opal.Opal,$regexp=Opal.regexp,$rb_plus=Opal.rb_plus,$def=Opal.def,$Kernel=Opal.Kernel,$eqeq=Opal.eqeq,$rb_lt=Opal.rb_lt,$rb_minus=Opal.rb_minus,$range=Opal.range,$send=Opal.send,$alias=Opal.alias;return Opal.add_stubs("respond_to?,to_path,coerce_to!,pwd,split,sub,+,unshift,join,home,raise,start_with?,absolute_path,==,<,dirname,-,basename,empty?,rindex,[],length,nil?,gsub,find,=~,map,each_with_index,flatten,reject,to_proc,end_with?"),function($base,$super,$parent_nesting){var self=$klass("::",$super,"File"),$nesting=[self].concat($parent_nesting),windows_root_rx=nil;return $const_set($nesting[0],"Separator",$const_set($nesting[0],"SEPARATOR","/")),$const_set($nesting[0],"ALT_SEPARATOR",nil),$const_set($nesting[0],"PATH_SEPARATOR",":"),$const_set($nesting[0],"FNM_SYSCASE",0),windows_root_rx=/^[a-zA-Z]:(?:\\|\/)/,function(self,$parent_nesting){var $nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);function $coerce_to_path(path){return $truthy(path["$respond_to?"]("to_path"))&&(path=path.$to_path()),path=$Opal["$coerce_to!"](path,$$$("String"),"to_str")}function $sep_chars(){return $$("ALT_SEPARATOR")===nil?Opal.escape_regexp($$("SEPARATOR")):Opal.escape_regexp($rb_plus($$("SEPARATOR"),$$("ALT_SEPARATOR")))}return $def(self,"$absolute_path",(function(path,basedir){var sep,sep_chars,$ret_or_1,path_abs,basedir_abs,part,new_parts=nil,parts=nil,leading_sep=nil,abs=nil,new_path=nil;null==basedir&&(basedir=nil),sep=$$("SEPARATOR"),sep_chars=$sep_chars(),new_parts=[],path=$truthy(path["$respond_to?"]("to_path"))?path.$to_path():path,path=$Opal["$coerce_to!"](path,$$$("String"),"to_str"),basedir=$truthy($ret_or_1=basedir)?$ret_or_1:$$$("Dir").$pwd(),path_abs=path.substr(0,sep.length)===sep||windows_root_rx.test(path),basedir_abs=basedir.substr(0,sep.length)===sep||windows_root_rx.test(basedir),$truthy(path_abs)?(parts=path.$split($regexp(["[",sep_chars,"]"])),leading_sep=windows_root_rx.test(path)?"":path.$sub($regexp(["^([",sep_chars,"]+).*$"]),"\\1"),abs=!0):(parts=$rb_plus(basedir.$split($regexp(["[",sep_chars,"]"])),path.$split($regexp(["[",sep_chars,"]"]))),leading_sep=windows_root_rx.test(basedir)?"":basedir.$sub($regexp(["^([",sep_chars,"]+).*$"]),"\\1"),abs=basedir_abs);for(var i=0,ii=parts.length;i<ii;i++)(part=parts[i])===nil||""===part&&(0===new_parts.length||abs)||"."===part&&(0===new_parts.length||abs)||(".."===part?new_parts.pop():new_parts.push(part));return abs||"."===parts[0]||new_parts.$unshift("."),new_path=new_parts.$join(sep),$truthy(abs)&&(new_path=$rb_plus(leading_sep,new_path)),new_path}),-2),$def(self,"$expand_path",(function(path,basedir){var sep,sep_chars,home=nil,leading_sep=nil,home_path_regexp=nil;return null==basedir&&(basedir=nil),sep=$$("SEPARATOR"),sep_chars=$sep_chars(),$truthy("~"===path[0]||basedir&&"~"===basedir[0])&&(home=$$("Dir").$home(),$truthy(home)||$Kernel.$raise($$$("ArgumentError"),"couldn't find HOME environment -- expanding `~'"),leading_sep=windows_root_rx.test(home)?"":home.$sub($regexp(["^([",sep_chars,"]+).*$"]),"\\1"),$truthy(home["$start_with?"](leading_sep))||$Kernel.$raise($$$("ArgumentError"),"non-absolute home"),home=$rb_plus(home,sep),home_path_regexp=$regexp(["^\\~(?:",sep,"|$)"]),path=path.$sub(home_path_regexp,home),$truthy(basedir)&&(basedir=basedir.$sub(home_path_regexp,home))),this.$absolute_path(path,basedir)}),-2),$def(self,"$dirname",(function(path,level){var sep_chars;if(null==level&&(level=1),$eqeq(level,0))return path;$truthy($rb_lt(level,0))&&$Kernel.$raise($$$("ArgumentError"),"level can't be negative"),sep_chars=$sep_chars();var out,absolute=(path=$coerce_to_path(path)).match(new RegExp("^["+sep_chars+"]"));return out=""===(path=(path=(path=path.replace(new RegExp("["+sep_chars+"]+$"),"")).replace(new RegExp("[^"+sep_chars+"]+$"),"")).replace(new RegExp("["+sep_chars+"]+$"),""))?absolute?"/":".":path,1==level?out:this.$dirname(out,$rb_minus(level,1))}),-2),$def(self,"$basename",(function(name,suffix){var sep_chars;return null==suffix&&(suffix=nil),sep_chars=$sep_chars(),0==(name=$coerce_to_path(name)).length||(suffix=suffix!==nil?$Opal["$coerce_to!"](suffix,$$$("String"),"to_str"):null,name=(name=name.replace(new RegExp("(.)["+sep_chars+"]*$"),"$1")).replace(new RegExp("^(?:.*["+sep_chars+"])?([^"+sep_chars+"]+)$"),"$1"),".*"===suffix?name=name.replace(/\.[^\.]+$/,""):null!==suffix&&(suffix=Opal.escape_regexp(suffix),name=name.replace(new RegExp(suffix+"$"),""))),name}),-2),$def(self,"$extname",(function(path){var filename=nil,last_dot_idx=nil;return path=$coerce_to_path(path),filename=this.$basename(path),$truthy(filename["$empty?"]())?"":(last_dot_idx=filename["$[]"]($range(1,-1,!1)).$rindex("."),$truthy(last_dot_idx["$nil?"]())||$eqeq($rb_plus(last_dot_idx,1),$rb_minus(filename.$length(),1))?"":filename["$[]"](Opal.Range.$new($rb_plus(last_dot_idx,1),-1,!1)))}),1),$def(self,"$exist?",(function(path){return null!=Opal.modules[path]}),1),$def(self,"$directory?",(function(path){var files=nil;for(var key in files=[],Opal.modules)files.push(key);return path=path.$gsub($regexp(["(^.",$$("SEPARATOR"),"+|",$$("SEPARATOR"),"+$)"])),$send(files,"find",[],(function(f){return null==f&&(f=nil),f["$=~"]($regexp(["^",path]))}),1)}),1),$def(self,"$join",(function($a){var $post_args,paths,result=nil;return $post_args=Opal.slice.call(arguments),$truthy((paths=$post_args)["$empty?"]())?"":(result="",paths=$send(paths.$flatten().$each_with_index(),"map",[],(function(item,index){return null==item&&(item=nil),null==index&&(index=nil),$eqeq(index,0)&&$truthy(item["$empty?"]())||$eqeq(paths.$length(),$rb_plus(index,1))&&$truthy(item["$empty?"]())?$$("SEPARATOR"):item}),2),paths=$send(paths,"reject",[],"empty?".$to_proc()),$send(paths,"each_with_index",[],(function(item,index){var next_item=nil;return null==item&&(item=nil),null==index&&(index=nil),next_item=paths["$[]"]($rb_plus(index,1)),$truthy(next_item["$nil?"]())?result=""+result+item:($truthy(item["$end_with?"]($$("SEPARATOR")))&&$truthy(next_item["$start_with?"]($$("SEPARATOR")))&&(item=item.$sub($regexp([$$("SEPARATOR"),"+$"]),"")),result=$truthy(item["$end_with?"]($$("SEPARATOR")))||$truthy(next_item["$start_with?"]($$("SEPARATOR")))?""+result+item:""+result+item+$$("SEPARATOR"))}),2),result)}),-1),$def(self,"$split",(function(path){return path.$split($$("SEPARATOR"))}),1),$alias(self,"realpath","expand_path"),$alias(self,"exists?","exist?")}(Opal.get_singleton_class(self),$nesting)}(0,$$$("IO"),[])},Opal.modules["nashorn/file"]=function(Opal){var self=Opal.top,$klass=(Opal.nil,Opal.klass),$defs=Opal.defs;return Opal.add_stubs("require"),self.$require("corelib/file"),function($base,$super){var self=$klass($base,null,"File");return $defs(self,"$read",(function(path){var Paths=Java.type("java.nio.file.Paths"),lines=Java.type("java.nio.file.Files").readAllLines(Paths.get(path),Java.type("java.nio.charset.StandardCharsets").UTF_8),data=[];return lines.forEach((function(line){data.push(line)})),data.join("\n")}),1),$defs(self,"$file?",(function(path){var Files=Java.type("java.nio.file.Files");return Files.exists(path)&&Files.isRegularFile(path)}),1),$defs(self,"$readable?",(function(path){var Files=Java.type("java.nio.file.Files");return Files.exists(path)&&Files.isReadable(path)}),1)}([][0])},Opal.modules.nashorn=function(Opal){var self=Opal.top,$module=(Opal.nil,Opal.module);return Opal.add_stubs("require"),$module([][0],"Nashorn"),self.$require("nashorn/io"),self.$require("nashorn/file")};
diff --git a/opal/master/nashorn.min.js.gz b/opal/master/nashorn.min.js.gz
index 86aaff7f..8adf885f 100644
Binary files a/opal/master/nashorn.min.js.gz and b/opal/master/nashorn.min.js.gz differ
diff --git a/opal/master/native.js b/opal/master/native.js
index bf4799e2..c04e1884 100644
--- a/opal/master/native.js
+++ b/opal/master/native.js
@@ -1,22 +1,15 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["native"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_ge(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs >= rhs : lhs['$>='](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $truthy = Opal.truthy, $send = Opal.send, $hash2 = Opal.hash2, $range = Opal.range, $alias = Opal.alias, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $gvars = Opal.gvars;
-
-  Opal.add_stubs(['$try_convert', '$native?', '$respond_to?', '$to_n', '$raise', '$inspect', '$Native', '$proc', '$map!', '$end_with?', '$define_method', '$[]', '$convert', '$call', '$to_proc', '$new', '$each', '$native_reader', '$native_writer', '$extend', '$warn', '$include', '$is_a?', '$map', '$to_a', '$_Array', '$method_missing', '$bind', '$instance_method', '$slice', '$-', '$length', '$[]=', '$enum_for', '$===', '$>=', '$<<', '$each_pair', '$_initialize', '$name', '$native_module']);
+Opal.modules["native"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $defs = Opal.defs, $truthy = Opal.truthy, $send = Opal.send, $Kernel = Opal.Kernel, $hash2 = Opal.hash2, $range = Opal.range, $to_a = Opal.to_a, $def = Opal.def, $alias = Opal.alias, $klass = Opal.klass, $rb_minus = Opal.rb_minus, $send2 = Opal.send2, $find_super = Opal.find_super, $eqeqeq = Opal.eqeqeq, $rb_ge = Opal.rb_ge, $gvars = Opal.gvars;
+
+  Opal.add_stubs('try_convert,native?,respond_to?,to_n,raise,inspect,Native,proc,map!,end_with?,define_method,[],convert,call,to_proc,new,each,native_reader,native_writer,extend,warn,include,is_a?,map,to_a,_Array,method_missing,bind,instance_method,slice,-,length,[]=,enum_for,===,>=,<<,each_pair,method_defined?,_initialize,name,native_module');
   
   (function($base, $parent_nesting) {
     var self = $module($base, 'Native');
 
-    var $nesting = [self].concat($parent_nesting), $Native_is_a$ques$1, $Native_try_convert$2, $Native_convert$3, $Native_call$4, $Native_proc$5, $Native_included$22;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
-    Opal.defs(self, '$is_a?', $Native_is_a$ques$1 = function(object, klass) {
+    $defs(self, '$is_a?', function $Native_is_a$ques$1(object, klass) {
       var self = this;
 
       
@@ -27,15 +20,13 @@ Opal.modules["native"] = function(Opal) {
         return false;
       }
     
-    }, $Native_is_a$ques$1.$$arity = 2);
-    Opal.defs(self, '$try_convert', $Native_try_convert$2 = function $$try_convert(value, default$) {
+    }, 2);
+    $defs(self, '$try_convert', function $$try_convert(value, default$) {
       var self = this;
 
       
       
-      if (default$ == null) {
-        default$ = nil;
-      };
+      if (default$ == null) default$ = nil;;
       
       if (self['$native?'](value)) {
         return value;
@@ -47,8 +38,8 @@ Opal.modules["native"] = function(Opal) {
         return default$;
       }
     ;
-    }, $Native_try_convert$2.$$arity = -2);
-    Opal.defs(self, '$convert', $Native_convert$3 = function $$convert(value) {
+    }, -2);
+    $defs(self, '$convert', function $$convert(value) {
       var self = this;
 
       
@@ -59,19 +50,18 @@ Opal.modules["native"] = function(Opal) {
         return value.$to_n();
       }
       else {
-        self.$raise($$($nesting, 'ArgumentError'), "" + (value.$inspect()) + " isn't native");
+        self.$raise($$('ArgumentError'), "" + (value.$inspect()) + " isn't native");
       }
     
-    }, $Native_convert$3.$$arity = 1);
-    Opal.defs(self, '$call', $Native_call$4 = function $$call(obj, key, $a) {
-      var $iter = $Native_call$4.$$p, block = $iter || nil, $post_args, args, self = this;
+    }, 1);
+    $defs(self, '$call', function $$call(obj, key, $a) {
+      var block = $$call.$$p || nil, $post_args, args, self = this;
 
-      if ($iter) $Native_call$4.$$p = null;
-      
+      delete $$call.$$p;
       
-      if ($iter) $Native_call$4.$$p = null;;
+      ;
       
-      $post_args = Opal.slice.call(arguments, 2, arguments.length);
+      $post_args = Opal.slice.call(arguments, 2);
       
       args = $post_args;;
       
@@ -97,33 +87,29 @@ Opal.modules["native"] = function(Opal) {
         return self.$Native(prop);
       }
     ;
-    }, $Native_call$4.$$arity = -3);
-    Opal.defs(self, '$proc', $Native_proc$5 = function $$proc() {
-      var $iter = $Native_proc$5.$$p, block = $iter || nil, $$6, self = this;
+    }, -3);
+    $defs(self, '$proc', function $$proc() {
+      var block = $$proc.$$p || nil, self = this;
 
-      if ($iter) $Native_proc$5.$$p = null;
-      
+      delete $$proc.$$p;
       
-      if ($iter) $Native_proc$5.$$p = null;;
-      if ($truthy(block)) {
-      } else {
-        self.$raise($$($nesting, 'LocalJumpError'), "no block given")
+      ;
+      if (!$truthy(block)) {
+        self.$raise($$('LocalJumpError'), "no block given")
       };
-      return $send($$$('::', 'Kernel'), 'proc', [], ($$6 = function($a){var self = $$6.$$s == null ? this : $$6.$$s, $post_args, args, $$7, instance = nil;
+      return $send($Kernel, 'proc', [], function $$2($a){var $post_args, args, self = $$2.$$s == null ? this : $$2.$$s, instance = nil;
 
         
         
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
+        $post_args = Opal.slice.call(arguments);
         
         args = $post_args;;
-        $send(args, 'map!', [], ($$7 = function(arg){var self = $$7.$$s == null ? this : $$7.$$s;
+        $send(args, 'map!', [], function $$3(arg){var self = $$3.$$s == null ? this : $$3.$$s;
 
           
           
-          if (arg == null) {
-            arg = nil;
-          };
-          return self.$Native(arg);}, $$7.$$s = self, $$7.$$arity = 1, $$7));
+          if (arg == null) arg = nil;;
+          return self.$Native(arg);}, {$$arity: 1, $$s: self});
         instance = self.$Native(this);
         
         // if global is current scope, run the block in the scope it was defined
@@ -140,22 +126,22 @@ Opal.modules["native"] = function(Opal) {
         finally {
           block.$$s = self_;
         }
-      ;}, $$6.$$s = self, $$6.$$arity = -1, $$6));
-    }, $Native_proc$5.$$arity = 0);
+      ;}, {$$arity: -1, $$s: self});
+    }, 0);
     (function($base, $parent_nesting) {
       var self = $module($base, 'Helpers');
 
-      var $nesting = [self].concat($parent_nesting), $Helpers_alias_native$8, $Helpers_native_reader$12, $Helpers_native_writer$15, $Helpers_native_accessor$18;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
       
-      Opal.def(self, '$alias_native', $Helpers_alias_native$8 = function $$alias_native(new$, $a, $b) {
-        var $post_args, $kwargs, old, as, $$9, $$10, $$11, $iter = $Helpers_alias_native$8.$$p, $yield = $iter || nil, self = this;
+      $def(self, '$alias_native', function $$alias_native(new$, $a, $b) {
+        var $post_args, $kwargs, old, as, $yield = $$alias_native.$$p || nil, self = this;
 
-        if ($iter) $Helpers_alias_native$8.$$p = null;
+        delete $$alias_native.$$p;
         
         
-        $post_args = Opal.slice.call(arguments, 1, arguments.length);
+        $post_args = Opal.slice.call(arguments, 1);
         
         $kwargs = Opal.extract_kwargs($post_args);
         
@@ -165,250 +151,227 @@ Opal.modules["native"] = function(Opal) {
           throw Opal.ArgumentError.$new('expected kwargs');
         };
         
-        if ($post_args.length > 0) {
-          old = $post_args[0];
-          $post_args.splice(0, 1);
-        }
-        if (old == null) {
-          old = new$;
-        };
+        if ($post_args.length > 0) old = $post_args.shift();
+        if (old == null) old = new$;;
         
         as = $kwargs.$$smap["as"];
-        if (as == null) {
-          as = nil
-        };
+        if (as == null) as = nil;
         if ($truthy(old['$end_with?']("="))) {
-          return $send(self, 'define_method', [new$], ($$9 = function(value){var self = $$9.$$s == null ? this : $$9.$$s;
+          return $send(self, 'define_method', [new$], function $$4(value){var self = $$4.$$s == null ? this : $$4.$$s;
             if (self["native"] == null) self["native"] = nil;
 
             
             
-            if (value == null) {
-              value = nil;
-            };
-            self["native"][old['$[]']($range(0, -2, false))] = $$($nesting, 'Native').$convert(value);
-            return value;}, $$9.$$s = self, $$9.$$arity = 1, $$9))
+            if (value == null) value = nil;;
+            self["native"][old['$[]']($range(0, -2, false))] = $$('Native').$convert(value);
+            return value;}, {$$arity: 1, $$s: self})
         } else if ($truthy(as)) {
-          return $send(self, 'define_method', [new$], ($$10 = function($c){var self = $$10.$$s == null ? this : $$10.$$s, $iter = $$10.$$p, block = $iter || nil, $post_args, args, value = nil;
+          return $send(self, 'define_method', [new$], function $$5($c){var block = $$5.$$p || nil, $post_args, args, self = $$5.$$s == null ? this : $$5.$$s, value = nil;
             if (self["native"] == null) self["native"] = nil;
 
+            delete $$5.$$p;
             
+            ;
             
-            if ($iter) $$10.$$p = null;;
-            
-            $post_args = Opal.slice.call(arguments, 0, arguments.length);
+            $post_args = Opal.slice.call(arguments);
             
             args = $post_args;;
-            value = $send($$($nesting, 'Native'), 'call', [self["native"], old].concat(Opal.to_a(args)), block.$to_proc());
+            value = $send($$('Native'), 'call', [self["native"], old].concat($to_a(args)), block.$to_proc());
             if ($truthy(value)) {
               return as.$new(value.$to_n())
             } else {
               return nil
-            };}, $$10.$$s = self, $$10.$$arity = -1, $$10))
+            };}, {$$arity: -1, $$s: self})
         } else {
-          return $send(self, 'define_method', [new$], ($$11 = function($c){var self = $$11.$$s == null ? this : $$11.$$s, $iter = $$11.$$p, block = $iter || nil, $post_args, args;
+          return $send(self, 'define_method', [new$], function $$6($c){var block = $$6.$$p || nil, $post_args, args, self = $$6.$$s == null ? this : $$6.$$s;
             if (self["native"] == null) self["native"] = nil;
 
+            delete $$6.$$p;
             
+            ;
             
-            if ($iter) $$11.$$p = null;;
-            
-            $post_args = Opal.slice.call(arguments, 0, arguments.length);
+            $post_args = Opal.slice.call(arguments);
             
             args = $post_args;;
-            return $send($$($nesting, 'Native'), 'call', [self["native"], old].concat(Opal.to_a(args)), block.$to_proc());}, $$11.$$s = self, $$11.$$arity = -1, $$11))
+            return $send($$('Native'), 'call', [self["native"], old].concat($to_a(args)), block.$to_proc());}, {$$arity: -1, $$s: self})
         };
-      }, $Helpers_alias_native$8.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$native_reader', $Helpers_native_reader$12 = function $$native_reader($a) {
-        var $post_args, names, $$13, self = this;
+      $def(self, '$native_reader', function $$native_reader($a) {
+        var $post_args, names, self = this;
 
         
         
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
+        $post_args = Opal.slice.call(arguments);
         
         names = $post_args;;
-        return $send(names, 'each', [], ($$13 = function(name){var self = $$13.$$s == null ? this : $$13.$$s, $$14;
+        return $send(names, 'each', [], function $$7(name){var self = $$7.$$s == null ? this : $$7.$$s;
 
           
           
-          if (name == null) {
-            name = nil;
-          };
-          return $send(self, 'define_method', [name], ($$14 = function(){var self = $$14.$$s == null ? this : $$14.$$s;
+          if (name == null) name = nil;;
+          return $send(self, 'define_method', [name], function $$8(){var self = $$8.$$s == null ? this : $$8.$$s;
             if (self["native"] == null) self["native"] = nil;
 
-            return self.$Native(self["native"][name])}, $$14.$$s = self, $$14.$$arity = 0, $$14));}, $$13.$$s = self, $$13.$$arity = 1, $$13));
-      }, $Helpers_native_reader$12.$$arity = -1);
+            return self.$Native(self["native"][name])}, {$$arity: 0, $$s: self});}, {$$arity: 1, $$s: self});
+      }, -1);
       
-      Opal.def(self, '$native_writer', $Helpers_native_writer$15 = function $$native_writer($a) {
-        var $post_args, names, $$16, self = this;
+      $def(self, '$native_writer', function $$native_writer($a) {
+        var $post_args, names, self = this;
 
         
         
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
+        $post_args = Opal.slice.call(arguments);
         
         names = $post_args;;
-        return $send(names, 'each', [], ($$16 = function(name){var self = $$16.$$s == null ? this : $$16.$$s, $$17;
+        return $send(names, 'each', [], function $$9(name){var self = $$9.$$s == null ? this : $$9.$$s;
 
           
           
-          if (name == null) {
-            name = nil;
-          };
-          return $send(self, 'define_method', ["" + (name) + "="], ($$17 = function(value){var self = $$17.$$s == null ? this : $$17.$$s;
+          if (name == null) name = nil;;
+          return $send(self, 'define_method', ["" + (name) + "="], function $$10(value){var self = $$10.$$s == null ? this : $$10.$$s;
             if (self["native"] == null) self["native"] = nil;
 
             
             
-            if (value == null) {
-              value = nil;
-            };
-            return self.$Native(self["native"][name] = value);}, $$17.$$s = self, $$17.$$arity = 1, $$17));}, $$16.$$s = self, $$16.$$arity = 1, $$16));
-      }, $Helpers_native_writer$15.$$arity = -1);
-      return (Opal.def(self, '$native_accessor', $Helpers_native_accessor$18 = function $$native_accessor($a) {
+            if (value == null) value = nil;;
+            return self.$Native(self["native"][name] = value);}, {$$arity: 1, $$s: self});}, {$$arity: 1, $$s: self});
+      }, -1);
+      return $def(self, '$native_accessor', function $$native_accessor($a) {
         var $post_args, names, self = this;
 
         
         
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
+        $post_args = Opal.slice.call(arguments);
         
         names = $post_args;;
-        $send(self, 'native_reader', Opal.to_a(names));
-        return $send(self, 'native_writer', Opal.to_a(names));
-      }, $Helpers_native_accessor$18.$$arity = -1), nil) && 'native_accessor';
+        $send(self, 'native_reader', $to_a(names));
+        return $send(self, 'native_writer', $to_a(names));
+      }, -1);
     })($nesting[0], $nesting);
     (function($base, $parent_nesting) {
       var self = $module($base, 'Wrapper');
 
-      var $nesting = [self].concat($parent_nesting), $Wrapper_initialize$19, $Wrapper_to_n$20, $Wrapper_included$21;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
       
-      Opal.def(self, '$initialize', $Wrapper_initialize$19 = function $$initialize(native$) {
+      $def(self, '$initialize', function $$initialize(native$) {
         var self = this;
 
         
-        if ($truthy($$$('::', 'Kernel')['$native?'](native$))) {
-        } else {
-          $$$('::', 'Kernel').$raise($$($nesting, 'ArgumentError'), "" + (native$.$inspect()) + " isn't native")
+        if (!$truthy($Kernel['$native?'](native$))) {
+          $Kernel.$raise($$('ArgumentError'), "" + (native$.$inspect()) + " isn't native")
         };
         return (self["native"] = native$);
-      }, $Wrapper_initialize$19.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$to_n', $Wrapper_to_n$20 = function $$to_n() {
+      $def(self, '$to_n', function $$to_n() {
         var self = this;
         if (self["native"] == null) self["native"] = nil;
 
         return self["native"]
-      }, $Wrapper_to_n$20.$$arity = 0);
-      return (Opal.defs(self, '$included', $Wrapper_included$21 = function $$included(klass) {
-        var self = this;
-
-        return klass.$extend($$($nesting, 'Helpers'))
-      }, $Wrapper_included$21.$$arity = 1), nil) && 'included';
+      }, 0);
+      return $defs(self, '$included', function $$included(klass) {
+        
+        return klass.$extend($$('Helpers'))
+      }, 1);
     })($nesting[0], $nesting);
-    return (Opal.defs(self, '$included', $Native_included$22 = function $$included(base) {
+    return $defs(self, '$included', function $$included(base) {
       var self = this;
 
       
       self.$warn("Including ::Native is deprecated. Please include Native::Wrapper instead.");
-      return base.$include($$($nesting, 'Wrapper'));
-    }, $Native_included$22.$$arity = 1), nil) && 'included';
+      return base.$include($$('Wrapper'));
+    }, 1);
   })($nesting[0], $nesting);
   (function($base, $parent_nesting) {
     var self = $module($base, 'Kernel');
 
-    var $nesting = [self].concat($parent_nesting), $Kernel_native$ques$23, $Kernel_Native$24, $Kernel_Array$27;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
     
-    Opal.def(self, '$native?', $Kernel_native$ques$23 = function(value) {
-      var self = this;
-
+    $def(self, '$native?', function $Kernel_native$ques$11(value) {
+      
       return value == null || !value.$$class;
-    }, $Kernel_native$ques$23.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$Native', $Kernel_Native$24 = function $$Native(obj) {
-      var $$25, $$26, $iter = $Kernel_Native$24.$$p, $yield = $iter || nil, self = this;
+    $def(self, '$Native', function $$Native(obj) {
+      var $yield = $$Native.$$p || nil, self = this;
 
-      if ($iter) $Kernel_Native$24.$$p = null;
+      delete $$Native.$$p;
       if ($truthy(obj == null)) {
         return nil
       } else if ($truthy(self['$native?'](obj))) {
-        return $$$($$($nesting, 'Native'), 'Object').$new(obj)
-      } else if ($truthy(obj['$is_a?']($$($nesting, 'Array')))) {
-        return $send(obj, 'map', [], ($$25 = function(o){var self = $$25.$$s == null ? this : $$25.$$s;
+        return $$$($$('Native'), 'Object').$new(obj)
+      } else if ($truthy(obj['$is_a?']($$('Array')))) {
+        return $send(obj, 'map', [], function $$12(o){var self = $$12.$$s == null ? this : $$12.$$s;
 
           
           
-          if (o == null) {
-            o = nil;
-          };
-          return self.$Native(o);}, $$25.$$s = self, $$25.$$arity = 1, $$25))
-      } else if ($truthy(obj['$is_a?']($$($nesting, 'Proc')))) {
-        return $send(self, 'proc', [], ($$26 = function($a){var self = $$26.$$s == null ? this : $$26.$$s, $iter = $$26.$$p, block = $iter || nil, $post_args, args;
+          if (o == null) o = nil;;
+          return self.$Native(o);}, {$$arity: 1, $$s: self})
+      } else if ($truthy(obj['$is_a?']($$('Proc')))) {
+        return $send(self, 'proc', [], function $$13($a){var block = $$13.$$p || nil, $post_args, args, self = $$13.$$s == null ? this : $$13.$$s;
 
+          delete $$13.$$p;
           
+          ;
           
-          if ($iter) $$26.$$p = null;;
-          
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
           args = $post_args;;
-          return self.$Native($send(obj, 'call', Opal.to_a(args), block.$to_proc()));}, $$26.$$s = self, $$26.$$arity = -1, $$26))
+          return self.$Native($send(obj, 'call', $to_a(args), block.$to_proc()));}, {$$arity: -1, $$s: self})
       } else {
         return obj
       }
-    }, $Kernel_Native$24.$$arity = 1);
+    }, 1);
     $alias(self, "_Array", "Array");
-    return (Opal.def(self, '$Array', $Kernel_Array$27 = function $$Array(object, $a) {
-      var $iter = $Kernel_Array$27.$$p, block = $iter || nil, $post_args, args, self = this;
+    return $def(self, '$Array', function $$Array(object, $a) {
+      var block = $$Array.$$p || nil, $post_args, args, self = this;
 
-      if ($iter) $Kernel_Array$27.$$p = null;
-      
+      delete $$Array.$$p;
       
-      if ($iter) $Kernel_Array$27.$$p = null;;
+      ;
       
-      $post_args = Opal.slice.call(arguments, 1, arguments.length);
+      $post_args = Opal.slice.call(arguments, 1);
       
       args = $post_args;;
       if ($truthy(self['$native?'](object))) {
-        return $send($$$($$($nesting, 'Native'), 'Array'), 'new', [object].concat(Opal.to_a(args)), block.$to_proc()).$to_a()};
+        return $send($$$($$('Native'), 'Array'), 'new', [object].concat($to_a(args)), block.$to_proc()).$to_a()
+      };
       return self.$_Array(object);
-    }, $Kernel_Array$27.$$arity = -2), nil) && 'Array';
+    }, -2);
   })($nesting[0], $nesting);
-  (function($base, $super, $parent_nesting) {
+  (function($base, $super) {
     var self = $klass($base, $super, 'Object');
 
-    var $nesting = [self].concat($parent_nesting), $Object_$eq_eq$28, $Object_has_key$ques$29, $Object_each$30, $Object_$$$31, $Object_$$$eq$32, $Object_merge$excl$33, $Object_respond_to$ques$34, $Object_respond_to_missing$ques$35, $Object_method_missing$36, $Object_nil$ques$37, $Object_is_a$ques$38, $Object_instance_of$ques$39, $Object_class$40, $Object_to_a$41, $Object_inspect$42;
+    var $proto = self.$$prototype;
 
-    self.$$prototype["native"] = nil;
+    $proto["native"] = nil;
     
-    self.$include($$$($$$('::', 'Native'), 'Wrapper'));
+    self.$include($$$($$$('Native'), 'Wrapper'));
     
-    Opal.def(self, '$==', $Object_$eq_eq$28 = function(other) {
+    $def(self, '$==', function $Object_$eq_eq$14(other) {
       var self = this;
 
-      return self["native"] === $$$('::', 'Native').$try_convert(other)
-    }, $Object_$eq_eq$28.$$arity = 1);
+      return self["native"] === $$$('Native').$try_convert(other)
+    }, 1);
     
-    Opal.def(self, '$has_key?', $Object_has_key$ques$29 = function(name) {
+    $def(self, '$has_key?', function $Object_has_key$ques$15(name) {
       var self = this;
 
       return Opal.hasOwnProperty.call(self["native"], name)
-    }, $Object_has_key$ques$29.$$arity = 1);
-    $alias(self, "key?", "has_key?");
-    $alias(self, "include?", "has_key?");
-    $alias(self, "member?", "has_key?");
+    }, 1);
     
-    Opal.def(self, '$each', $Object_each$30 = function $$each($a) {
-      var $post_args, args, $iter = $Object_each$30.$$p, $yield = $iter || nil, self = this;
+    $def(self, '$each', function $$each($a) {
+      var $post_args, args, $yield = $$each.$$p || nil, self = this;
 
-      if ($iter) $Object_each$30.$$p = null;
+      delete $$each.$$p;
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
       if (($yield !== nil)) {
@@ -420,11 +383,11 @@ Opal.modules["native"] = function(Opal) {
       ;
         return self;
       } else {
-        return $send(self, 'method_missing', ["each"].concat(Opal.to_a(args)))
+        return $send(self, 'method_missing', ["each"].concat($to_a(args)))
       };
-    }, $Object_each$30.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$[]', $Object_$$$31 = function(key) {
+    $def(self, '$[]', function $Object_$$$16(key) {
       var self = this;
 
       
@@ -434,179 +397,157 @@ Opal.modules["native"] = function(Opal) {
         return prop;
       }
       else {
-        return $$$('::', 'Native').$call(self["native"], key)
+        return $$$('Native').$call(self["native"], key)
       }
     
-    }, $Object_$$$31.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$[]=', $Object_$$$eq$32 = function(key, value) {
+    $def(self, '$[]=', function $Object_$$$eq$17(key, value) {
       var self = this, native$ = nil;
 
       
-      native$ = $$$('::', 'Native').$try_convert(value);
+      native$ = $$$('Native').$try_convert(value);
       if ($truthy(native$ === nil)) {
         return self["native"][key] = value
       } else {
         return self["native"][key] = native$
       };
-    }, $Object_$$$eq$32.$$arity = 2);
+    }, 2);
     
-    Opal.def(self, '$merge!', $Object_merge$excl$33 = function(other) {
+    $def(self, '$merge!', function $Object_merge$excl$18(other) {
       var self = this;
 
       
       
-      other = $$$('::', 'Native').$convert(other);
+      other = $$$('Native').$convert(other);
 
       for (var prop in other) {
         self["native"][prop] = other[prop];
       }
     ;
       return self;
-    }, $Object_merge$excl$33.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$respond_to?', $Object_respond_to$ques$34 = function(name, include_all) {
+    $def(self, '$respond_to?', function $Object_respond_to$ques$19(name, include_all) {
       var self = this;
 
       
       
-      if (include_all == null) {
-        include_all = false;
-      };
-      return $$$('::', 'Kernel').$instance_method("respond_to?").$bind(self).$call(name, include_all);
-    }, $Object_respond_to$ques$34.$$arity = -2);
+      if (include_all == null) include_all = false;;
+      return $Kernel.$instance_method("respond_to?").$bind(self).$call(name, include_all);
+    }, -2);
     
-    Opal.def(self, '$respond_to_missing?', $Object_respond_to_missing$ques$35 = function(name, include_all) {
+    $def(self, '$respond_to_missing?', function $Object_respond_to_missing$ques$20(name, include_all) {
       var self = this;
 
       
       
-      if (include_all == null) {
-        include_all = false;
-      };
+      if (include_all == null) include_all = false;;
       return Opal.hasOwnProperty.call(self["native"], name);
-    }, $Object_respond_to_missing$ques$35.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$method_missing', $Object_method_missing$36 = function $$method_missing(mid, $a) {
-      var $iter = $Object_method_missing$36.$$p, block = $iter || nil, $post_args, args, self = this, $writer = nil;
+    $def(self, '$method_missing', function $$method_missing(mid, $a) {
+      var block = $$method_missing.$$p || nil, $post_args, args, self = this, $writer = nil;
 
-      if ($iter) $Object_method_missing$36.$$p = null;
-      
+      delete $$method_missing.$$p;
       
-      if ($iter) $Object_method_missing$36.$$p = null;;
+      ;
       
-      $post_args = Opal.slice.call(arguments, 1, arguments.length);
+      $post_args = Opal.slice.call(arguments, 1);
       
       args = $post_args;;
       
       if (mid.charAt(mid.length - 1) === '=') {
-        return (($writer = [mid.$slice(0, $rb_minus(mid.$length(), 1)), args['$[]'](0)]), $send(self, '[]=', Opal.to_a($writer)), $writer[$rb_minus($writer["length"], 1)]);
+        return (($writer = [mid.$slice(0, $rb_minus(mid.$length(), 1)), args['$[]'](0)]), $send(self, '[]=', $to_a($writer)), $writer[$rb_minus($writer["length"], 1)]);
       }
       else {
-        return $send($$$('::', 'Native'), 'call', [self["native"], mid].concat(Opal.to_a(args)), block.$to_proc());
+        return $send($$$('Native'), 'call', [self["native"], mid].concat($to_a(args)), block.$to_proc());
       }
     ;
-    }, $Object_method_missing$36.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$nil?', $Object_nil$ques$37 = function() {
-      var self = this;
-
+    $def(self, '$nil?', function $Object_nil$ques$21() {
+      
       return false
-    }, $Object_nil$ques$37.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$is_a?', $Object_is_a$ques$38 = function(klass) {
+    $def(self, '$is_a?', function $Object_is_a$ques$22(klass) {
       var self = this;
 
       return Opal.is_a(self, klass);
-    }, $Object_is_a$ques$38.$$arity = 1);
-    $alias(self, "kind_of?", "is_a?");
+    }, 1);
     
-    Opal.def(self, '$instance_of?', $Object_instance_of$ques$39 = function(klass) {
+    $def(self, '$instance_of?', function $Object_instance_of$ques$23(klass) {
       var self = this;
 
       return self.$$class === klass;
-    }, $Object_instance_of$ques$39.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$class', $Object_class$40 = function() {
+    $def(self, '$class', function $Object_class$24() {
       var self = this;
 
       return self.$$class;
-    }, $Object_class$40.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_a', $Object_to_a$41 = function $$to_a(options) {
-      var $iter = $Object_to_a$41.$$p, block = $iter || nil, self = this;
+    $def(self, '$to_a', function $$to_a(options) {
+      var block = $$to_a.$$p || nil, self = this;
 
-      if ($iter) $Object_to_a$41.$$p = null;
-      
+      delete $$to_a.$$p;
       
-      if ($iter) $Object_to_a$41.$$p = null;;
+      ;
       
-      if (options == null) {
-        options = $hash2([], {});
-      };
-      return $send($$$($$$('::', 'Native'), 'Array'), 'new', [self["native"], options], block.$to_proc()).$to_a();
-    }, $Object_to_a$41.$$arity = -1);
-    return (Opal.def(self, '$inspect', $Object_inspect$42 = function $$inspect() {
+      if (options == null) options = $hash2([], {});;
+      return $send($$$($$$('Native'), 'Array'), 'new', [self["native"], options], block.$to_proc()).$to_a();
+    }, -1);
+    
+    $def(self, '$inspect', function $$inspect() {
       var self = this;
 
-      return "" + "#<Native:" + (String(self["native"])) + ">"
-    }, $Object_inspect$42.$$arity = 0), nil) && 'inspect';
-  })($$($nesting, 'Native'), $$($nesting, 'BasicObject'), $nesting);
+      return "#<Native:" + (String(self["native"])) + ">"
+    }, 0);
+    $alias(self, "include?", "has_key?");
+    $alias(self, "key?", "has_key?");
+    $alias(self, "kind_of?", "is_a?");
+    return $alias(self, "member?", "has_key?");
+  })($$('Native'), $$('BasicObject'));
   (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Array');
 
-    var $nesting = [self].concat($parent_nesting), $Array_initialize$43, $Array_each$44, $Array_$$$45, $Array_$$$eq$46, $Array_last$47, $Array_length$48, $Array_inspect$49;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-    self.$$prototype.named = self.$$prototype["native"] = self.$$prototype.get = self.$$prototype.block = self.$$prototype.set = self.$$prototype.length = nil;
+    $proto.named = $proto["native"] = $proto.get = $proto.block = $proto.set = $proto.length = nil;
     
-    self.$include($$$($$($nesting, 'Native'), 'Wrapper'));
-    self.$include($$($nesting, 'Enumerable'));
+    self.$include($$$($$('Native'), 'Wrapper'));
+    self.$include($$('Enumerable'));
     
-    Opal.def(self, '$initialize', $Array_initialize$43 = function $$initialize(native$, options) {
-      var $iter = $Array_initialize$43.$$p, block = $iter || nil, self = this, $ret_or_1 = nil, $ret_or_2 = nil, $ret_or_3 = nil;
+    $def(self, '$initialize', function $$initialize(native$, options) {
+      var block = $$initialize.$$p || nil, self = this, $ret_or_1 = nil;
 
-      if ($iter) $Array_initialize$43.$$p = null;
+      delete $$initialize.$$p;
       
+      ;
       
-      if ($iter) $Array_initialize$43.$$p = null;;
-      
-      if (options == null) {
-        options = $hash2([], {});
-      };
-      $send2(self, $find_super(self, 'initialize', $Array_initialize$43, false, true), 'initialize', [native$], null);
-      self.get = (function() {if ($truthy(($ret_or_1 = options['$[]']("get")))) {
-        return $ret_or_1
-      } else {
-        return options['$[]']("access")
-      }; return nil; })();
+      if (options == null) options = $hash2([], {});;
+      $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [native$], null);
+      self.get = ($truthy(($ret_or_1 = options['$[]']("get"))) ? ($ret_or_1) : (options['$[]']("access")));
       self.named = options['$[]']("named");
-      self.set = (function() {if ($truthy(($ret_or_2 = options['$[]']("set")))) {
-        return $ret_or_2
-      } else {
-        return options['$[]']("access")
-      }; return nil; })();
-      self.length = (function() {if ($truthy(($ret_or_3 = options['$[]']("length")))) {
-        return $ret_or_3
-      } else {
-        return "length"
-      }; return nil; })();
+      self.set = ($truthy(($ret_or_1 = options['$[]']("set"))) ? ($ret_or_1) : (options['$[]']("access")));
+      self.length = ($truthy(($ret_or_1 = options['$[]']("length"))) ? ($ret_or_1) : ("length"));
       self.block = block;
       if ($truthy(self.$length() == null)) {
-        return self.$raise($$($nesting, 'ArgumentError'), "no length found on the array-like object")
+        return self.$raise($$('ArgumentError'), "no length found on the array-like object")
       } else {
         return nil
       };
-    }, $Array_initialize$43.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$each', $Array_each$44 = function $$each() {
-      var $iter = $Array_each$44.$$p, block = $iter || nil, self = this;
+    $def(self, '$each', function $$each() {
+      var block = $$each.$$p || nil, self = this;
 
-      if ($iter) $Array_each$44.$$p = null;
+      delete $$each.$$p;
       
-      
-      if ($iter) $Array_each$44.$$p = null;;
-      if ($truthy(block)) {
-      } else {
+      ;
+      if (!$truthy(block)) {
         return self.$enum_for("each")
       };
       
@@ -615,24 +556,13 @@ Opal.modules["native"] = function(Opal) {
       }
     ;
       return self;
-    }, $Array_each$44.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$[]', $Array_$$$45 = function(index) {
-      var self = this, result = nil, $case = nil;
+    $def(self, '$[]', function $Array_$$$25(index) {
+      var self = this, result = nil, $ret_or_1 = nil;
 
       
-      result = (function() {$case = index;
-      if ($$($nesting, 'String')['$===']($case) || $$($nesting, 'Symbol')['$===']($case)) {if ($truthy(self.named)) {
-        return self["native"][self.named](index)
-      } else {
-        return self["native"][index]
-      }}
-      else if ($$($nesting, 'Integer')['$===']($case)) {if ($truthy(self.get)) {
-        return self["native"][self.get](index)
-      } else {
-        return self["native"][index]
-      }}
-      else { return nil }})();
+      result = (($eqeqeq($$('String'), ($ret_or_1 = index)) || ($eqeqeq($$('Symbol'), $ret_or_1))) ? (($truthy(self.named) ? (self["native"][self.named](index)) : (self["native"][index]))) : ($eqeqeq($$('Integer'), $ret_or_1) ? (($truthy(self.get) ? (self["native"][self.get](index)) : (self["native"][index]))) : (nil)));
       if ($truthy(result)) {
         if ($truthy(self.block)) {
           return self.block.$call(result)
@@ -642,26 +572,24 @@ Opal.modules["native"] = function(Opal) {
       } else {
         return nil
       };
-    }, $Array_$$$45.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$[]=', $Array_$$$eq$46 = function(index, value) {
+    $def(self, '$[]=', function $Array_$$$eq$26(index, value) {
       var self = this;
 
       if ($truthy(self.set)) {
-        return self["native"][self.set](index, $$($nesting, 'Native').$convert(value))
+        return self["native"][self.set](index, $$('Native').$convert(value))
       } else {
-        return self["native"][index] = $$($nesting, 'Native').$convert(value)
+        return self["native"][index] = $$('Native').$convert(value)
       }
-    }, $Array_$$$eq$46.$$arity = 2);
+    }, 2);
     
-    Opal.def(self, '$last', $Array_last$47 = function $$last(count) {
+    $def(self, '$last', function $$last(count) {
       var $a, self = this, index = nil, result = nil;
 
       
       
-      if (count == null) {
-        count = nil;
-      };
+      if (count == null) count = nil;;
       if ($truthy(count)) {
         
         index = $rb_minus(self.$length(), 1);
@@ -675,107 +603,99 @@ Opal.modules["native"] = function(Opal) {
       } else {
         return self['$[]']($rb_minus(self.$length(), 1))
       };
-    }, $Array_last$47.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$length', $Array_length$48 = function $$length() {
+    $def(self, '$length', function $$length() {
       var self = this;
 
       return self["native"][self.length]
-    }, $Array_length$48.$$arity = 0);
-    $alias(self, "to_ary", "to_a");
-    return (Opal.def(self, '$inspect', $Array_inspect$49 = function $$inspect() {
+    }, 0);
+    
+    $def(self, '$inspect', function $$inspect() {
       var self = this;
 
       return self.$to_a().$inspect()
-    }, $Array_inspect$49.$$arity = 0), nil) && 'inspect';
-  })($$($nesting, 'Native'), null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 0);
+    return $alias(self, "to_ary", "to_a");
+  })($$('Native'), null, $nesting);
+  (function($base, $super) {
     var self = $klass($base, $super, 'Numeric');
 
-    var $nesting = [self].concat($parent_nesting), $Numeric_to_n$50;
-
-    return (Opal.def(self, '$to_n', $Numeric_to_n$50 = function $$to_n() {
+    
+    return $def(self, '$to_n', function $$to_n() {
       var self = this;
 
       return self.valueOf();
-    }, $Numeric_to_n$50.$$arity = 0), nil) && 'to_n'
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 0)
+  })($nesting[0], null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'Proc');
 
-    var $nesting = [self].concat($parent_nesting), $Proc_to_n$51;
-
-    return (Opal.def(self, '$to_n', $Proc_to_n$51 = function $$to_n() {
+    
+    return $def(self, '$to_n', function $$to_n() {
       var self = this;
 
       return self
-    }, $Proc_to_n$51.$$arity = 0), nil) && 'to_n'
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 0)
+  })($nesting[0], null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'String');
 
-    var $nesting = [self].concat($parent_nesting), $String_to_n$52;
-
-    return (Opal.def(self, '$to_n', $String_to_n$52 = function $$to_n() {
+    
+    return $def(self, '$to_n', function $$to_n() {
       var self = this;
 
       return self.valueOf();
-    }, $String_to_n$52.$$arity = 0), nil) && 'to_n'
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 0)
+  })($nesting[0], null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'Regexp');
 
-    var $nesting = [self].concat($parent_nesting), $Regexp_to_n$53;
-
-    return (Opal.def(self, '$to_n', $Regexp_to_n$53 = function $$to_n() {
+    
+    return $def(self, '$to_n', function $$to_n() {
       var self = this;
 
       return self.valueOf();
-    }, $Regexp_to_n$53.$$arity = 0), nil) && 'to_n'
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 0)
+  })($nesting[0], null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'MatchData');
 
-    var $nesting = [self].concat($parent_nesting), $MatchData_to_n$54;
+    var $proto = self.$$prototype;
 
-    self.$$prototype.matches = nil;
-    return (Opal.def(self, '$to_n', $MatchData_to_n$54 = function $$to_n() {
+    $proto.matches = nil;
+    return $def(self, '$to_n', function $$to_n() {
       var self = this;
 
       return self.matches
-    }, $MatchData_to_n$54.$$arity = 0), nil) && 'to_n'
-  })($nesting[0], null, $nesting);
+    }, 0)
+  })($nesting[0], null);
   (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Struct');
 
-    var $nesting = [self].concat($parent_nesting), $Struct_to_n$55;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-    return (Opal.def(self, '$to_n', $Struct_to_n$55 = function $$to_n() {
-      var $$56, self = this, result = nil;
+    return $def(self, '$to_n', function $$to_n() {
+      var self = this, result = nil;
 
       
       result = {};
-      $send(self, 'each_pair', [], ($$56 = function(name, value){var self = $$56.$$s == null ? this : $$56.$$s;
-
+      $send(self, 'each_pair', [], function $$27(name, value){
         
         
-        if (name == null) {
-          name = nil;
-        };
+        if (name == null) name = nil;;
         
-        if (value == null) {
-          value = nil;
-        };
-        return result[name] = $$($nesting, 'Native').$try_convert(value, value);}, $$56.$$s = self, $$56.$$arity = 2, $$56));
+        if (value == null) value = nil;;
+        return result[name] = $$('Native').$try_convert(value, value);}, 2);
       return result;
-    }, $Struct_to_n$55.$$arity = 0), nil) && 'to_n'
+    }, 0)
   })($nesting[0], null, $nesting);
   (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Array');
 
-    var $nesting = [self].concat($parent_nesting), $Array_to_n$57;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-    return (Opal.def(self, '$to_n', $Array_to_n$57 = function $$to_n() {
+    return $def(self, '$to_n', function $$to_n() {
       var self = this;
 
       
@@ -784,163 +704,159 @@ Opal.modules["native"] = function(Opal) {
       for (var i = 0, length = self.length; i < length; i++) {
         var obj = self[i];
 
-        result.push($$($nesting, 'Native').$try_convert(obj, obj));
+        result.push($$('Native').$try_convert(obj, obj));
       }
 
       return result;
     
-    }, $Array_to_n$57.$$arity = 0), nil) && 'to_n'
+    }, 0)
   })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+  (function($base, $super) {
     var self = $klass($base, $super, 'Boolean');
 
-    var $nesting = [self].concat($parent_nesting), $Boolean_to_n$58;
-
-    return (Opal.def(self, '$to_n', $Boolean_to_n$58 = function $$to_n() {
+    
+    return $def(self, '$to_n', function $$to_n() {
       var self = this;
 
       return self.valueOf();
-    }, $Boolean_to_n$58.$$arity = 0), nil) && 'to_n'
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 0)
+  })($nesting[0], null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'Time');
 
-    var $nesting = [self].concat($parent_nesting), $Time_to_n$59;
-
-    return (Opal.def(self, '$to_n', $Time_to_n$59 = function $$to_n() {
+    
+    return $def(self, '$to_n', function $$to_n() {
       var self = this;
 
       return self
-    }, $Time_to_n$59.$$arity = 0), nil) && 'to_n'
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 0)
+  })($nesting[0], null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'NilClass');
 
-    var $nesting = [self].concat($parent_nesting), $NilClass_to_n$60;
-
-    return (Opal.def(self, '$to_n', $NilClass_to_n$60 = function $$to_n() {
-      var self = this;
-
+    
+    return $def(self, '$to_n', function $$to_n() {
+      
       return null;
-    }, $NilClass_to_n$60.$$arity = 0), nil) && 'to_n'
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'Hash');
+    }, 0)
+  })($nesting[0], null);
+  if (!$truthy($$('Hash')['$method_defined?']("_initialize"))) {
+    (function($base, $super, $parent_nesting) {
+      var self = $klass($base, $super, 'Hash');
 
-    var $nesting = [self].concat($parent_nesting), $Hash_initialize$61, $Hash_to_n$62;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-    
-    $alias(self, "_initialize", "initialize");
-    
-    Opal.def(self, '$initialize', $Hash_initialize$61 = function $$initialize(defaults) {
-      var $iter = $Hash_initialize$61.$$p, block = $iter || nil, self = this;
-
-      if ($iter) $Hash_initialize$61.$$p = null;
-      
       
-      if ($iter) $Hash_initialize$61.$$p = null;;
-      ;
+      $alias(self, "_initialize", "initialize");
       
-      if (defaults != null &&
-           (defaults.constructor === undefined ||
-             defaults.constructor === Object)) {
-        var smap = self.$$smap,
-            keys = self.$$keys,
-            key, value;
+      $def(self, '$initialize', function $$initialize(defaults) {
+        var block = $$initialize.$$p || nil, self = this;
 
-        for (key in defaults) {
-          value = defaults[key];
-
-          if (value &&
-               (value.constructor === undefined ||
-                 value.constructor === Object)) {
-            smap[key] = $$($nesting, 'Hash').$new(value);
-          } else if (value && value.$$is_array) {
-            value = value.map(function(item) {
-              if (item &&
-                   (item.constructor === undefined ||
-                     item.constructor === Object)) {
-                return $$($nesting, 'Hash').$new(item);
-              }
-
-              return self.$Native(item);
-            });
-            smap[key] = value
-          } else {
-            smap[key] = self.$Native(value);
+        delete $$initialize.$$p;
+        
+        ;
+        ;
+        
+        if (defaults != null &&
+             (defaults.constructor === undefined ||
+               defaults.constructor === Object)) {
+          var smap = self.$$smap,
+              keys = self.$$keys,
+              key, value;
+
+          for (key in defaults) {
+            value = defaults[key];
+
+            if (value &&
+                 (value.constructor === undefined ||
+                   value.constructor === Object)) {
+              smap[key] = $$('Hash').$new(value);
+            } else if (value && value.$$is_array) {
+              value = value.map(function(item) {
+                if (item &&
+                     (item.constructor === undefined ||
+                       item.constructor === Object)) {
+                  return $$('Hash').$new(item);
+                }
+
+                return self.$Native(item);
+              });
+              smap[key] = value
+            } else {
+              smap[key] = self.$Native(value);
+            }
+
+            keys.push(key);
           }
 
-          keys.push(key);
+          return self;
         }
 
-        return self;
-      }
+        return $send(self, '_initialize', [defaults], block.$to_proc());
+      ;
+      }, -1);
+      return $def(self, '$to_n', function $$to_n() {
+        var self = this;
 
-      return $send(self, '_initialize', [defaults], block.$to_proc());
-    ;
-    }, $Hash_initialize$61.$$arity = -1);
-    return (Opal.def(self, '$to_n', $Hash_to_n$62 = function $$to_n() {
-      var self = this;
+        
+        var result = {},
+            keys = self.$$keys,
+            smap = self.$$smap,
+            key, value;
 
-      
-      var result = {},
-          keys = self.$$keys,
-          smap = self.$$smap,
-          key, value;
+        for (var i = 0, length = keys.length; i < length; i++) {
+          key = keys[i];
 
-      for (var i = 0, length = keys.length; i < length; i++) {
-        key = keys[i];
+          if (key.$$is_string) {
+            value = smap[key];
+          } else {
+            key = key.key;
+            value = key.value;
+          }
 
-        if (key.$$is_string) {
-          value = smap[key];
-        } else {
-          key = key.key;
-          value = key.value;
+          result[key] = $$('Native').$try_convert(value, value);
         }
 
-        result[key] = $$($nesting, 'Native').$try_convert(value, value);
-      }
-
-      return result;
-    
-    }, $Hash_to_n$62.$$arity = 0), nil) && 'to_n';
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+        return result;
+      
+      }, 0);
+    })($nesting[0], null, $nesting)
+  };
+  (function($base, $super) {
     var self = $klass($base, $super, 'Module');
 
-    var $nesting = [self].concat($parent_nesting), $Module_native_module$63;
-
-    return (Opal.def(self, '$native_module', $Module_native_module$63 = function $$native_module() {
+    
+    return $def(self, '$native_module', function $$native_module() {
       var self = this;
 
       return Opal.global[self.$name()] = self
-    }, $Module_native_module$63.$$arity = 0), nil) && 'native_module'
-  })($nesting[0], null, $nesting);
+    }, 0)
+  })($nesting[0], null);
   (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Class');
 
-    var $nesting = [self].concat($parent_nesting), $Class_native_alias$64, $Class_native_class$65;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
     
-    Opal.def(self, '$native_alias', $Class_native_alias$64 = function $$native_alias(new_jsid, existing_mid) {
+    $def(self, '$native_alias', function $$native_alias(new_jsid, existing_mid) {
       var self = this;
 
       
       var aliased = self.prototype['$' + existing_mid];
       if (!aliased) {
-        self.$raise($$($nesting, 'NameError').$new("" + "undefined method `" + (existing_mid) + "' for class `" + (self.$inspect()) + "'", existing_mid));
+        self.$raise($$('NameError').$new("undefined method `" + (existing_mid) + "' for class `" + (self.$inspect()) + "'", existing_mid));
       }
       self.prototype[new_jsid] = aliased;
     
-    }, $Class_native_alias$64.$$arity = 2);
-    return (Opal.def(self, '$native_class', $Class_native_class$65 = function $$native_class() {
+    }, 2);
+    return $def(self, '$native_class', function $$native_class() {
       var self = this;
 
       
       self.$native_module();
       return self["new"] = self.$new;;
-    }, $Class_native_class$65.$$arity = 0), nil) && 'native_class';
+    }, 0);
   })($nesting[0], null, $nesting);
   return ($gvars.$ = ($gvars.global = self.$Native(Opal.global)));
 };
diff --git a/opal/master/native.min.js b/opal/master/native.min.js
index ff598595..fd2f0152 100644
--- a/opal/master/native.min.js
+++ b/opal/master/native.min.js
@@ -1 +1 @@
-Opal.modules.native=function(Opal){function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}var $base,$Object_inspect$42,$Object_class$40,$Object_each$30,$Object_method_missing$36,$Object_to_a$41,self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$truthy=Opal.truthy,$send=Opal.send,$hash2=Opal.hash2,$range=Opal.range,$alias=Opal.alias,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$gvars=Opal.gvars;return Opal.add_stubs(["$try_convert","$native?","$respond_to?","$to_n","$raise","$inspect","$Native","$proc","$map!","$end_with?","$define_method","$[]","$convert","$call","$to_proc","$new","$each","$native_reader","$native_writer","$extend","$warn","$include","$is_a?","$map","$to_a","$_Array","$method_missing","$bind","$instance_method","$slice","$-","$length","$[]=","$enum_for","$===","$>=","$<<","$each_pair","$_initialize","$name","$native_module"]),function($Native_included$22,$Native_convert$3){var $Native_call$4,$Native_proc$5,$nesting=[$Native_included$22=$module($Native_included$22,"Native")].concat($Native_convert$3);Opal.defs($Native_included$22,"$is_a?",$Native_convert$3=function(object,klass){try{return object instanceof this.$try_convert(klass)}catch(e){return!1}},$Native_convert$3.$$arity=2),Opal.defs($Native_included$22,"$try_convert",$Native_convert$3=function(value,default$){return null==default$&&(default$=nil),this["$native?"](value)?value:value["$respond_to?"]("to_n")?value.$to_n():default$},$Native_convert$3.$$arity=-2),Opal.defs($Native_included$22,"$convert",$Native_convert$3=function(value){return this["$native?"](value)?value:value["$respond_to?"]("to_n")?value.$to_n():void this.$raise($$($nesting,"ArgumentError"),value.$inspect()+" isn't native")},$Native_convert$3.$$arity=1),Opal.defs($Native_included$22,"$call",$Native_call$4=function(obj,key,$a){var args,prop=$Native_call$4.$$p,block=prop||nil;prop&&($Native_call$4.$$p=null),prop&&($Native_call$4.$$p=null),args=Opal.slice.call(arguments,2,arguments.length);prop=obj[key];if(prop instanceof Function){for(var converted=new Array(args.length),i=0,l=args.length;i<l;i++){var item=args[i],conv=this.$try_convert(item);converted[i]=conv===nil?item:conv}return block!==nil&&converted.push(block),this.$Native(prop.apply(obj,converted))}return this.$Native(prop)},$Native_call$4.$$arity=-3),Opal.defs($Native_included$22,"$proc",$Native_proc$5=function(){var $$6,$iter=$Native_proc$5.$$p,block=$iter||nil;return $iter&&($Native_proc$5.$$p=null),$iter&&($Native_proc$5.$$p=null),$truthy(block)||this.$raise($$($nesting,"LocalJumpError"),"no block given"),$send($$$("::","Kernel"),"proc",[],(($$6=function($a){var $$7,instance,self_=null==$$6.$$s?this:$$6.$$s,args=Opal.slice.call(arguments,0,arguments.length);if($send(args,"map!",[],(($$7=function(arg){var self=null==$$7.$$s?this:$$7.$$s;return null==arg&&(arg=nil),self.$Native(arg)}).$$s=self_,$$7.$$arity=1,$$7)),instance=self_.$Native(this),this===Opal.global)return block.apply(self_,args);self_=block.$$s;block.$$s=null;try{return block.apply(instance,args)}finally{block.$$s=self_}}).$$s=this,$$6.$$arity=-1,$$6))},$Native_proc$5.$$arity=0),function($Helpers_native_accessor$18,$Helpers_native_writer$15){var $Helpers_alias_native$8,$nesting=[$Helpers_native_accessor$18=$module($Helpers_native_accessor$18,"Helpers")].concat($Helpers_native_writer$15);Opal.def($Helpers_native_accessor$18,"$alias_native",$Helpers_alias_native$8=function(new$,$a,$b){var $post_args,old,as,$$9,$$10,$$11,$kwargs=$Helpers_alias_native$8.$$p;if($kwargs&&($Helpers_alias_native$8.$$p=null),$post_args=Opal.slice.call(arguments,1,arguments.length),null==($kwargs=Opal.extract_kwargs($post_args)))$kwargs=$hash2([],{});else if(!$kwargs.$$is_hash)throw Opal.ArgumentError.$new("expected kwargs");return 0<$post_args.length&&(old=$post_args[0],$post_args.splice(0,1)),null==old&&(old=new$),null==(as=$kwargs.$$smap.as)&&(as=nil),$truthy(old["$end_with?"]("="))?$send(this,"define_method",[new$],(($$9=function(value){var self=null==$$9.$$s?this:$$9.$$s;return null==self.native&&(self.native=nil),null==value&&(value=nil),self.native[old["$[]"]($range(0,-2,!1))]=$$($nesting,"Native").$convert(value),value}).$$s=this,$$9.$$arity=1,$$9)):$truthy(as)?$send(this,"define_method",[new$],(($$10=function($c){var self=null==$$10.$$s?this:$$10.$$s,args=$$10.$$p,block=args||nil,value=nil;return null==self.native&&(self.native=nil),args&&($$10.$$p=null),args=Opal.slice.call(arguments,0,arguments.length),value=$send($$($nesting,"Native"),"call",[self.native,old].concat(Opal.to_a(args)),block.$to_proc()),$truthy(value)?as.$new(value.$to_n()):nil}).$$s=this,$$10.$$arity=-1,$$10)):$send(this,"define_method",[new$],(($$11=function($c){var self=null==$$11.$$s?this:$$11.$$s,args=$$11.$$p,block=args||nil;return null==self.native&&(self.native=nil),args&&($$11.$$p=null),args=Opal.slice.call(arguments,0,arguments.length),$send($$($nesting,"Native"),"call",[self.native,old].concat(Opal.to_a(args)),block.$to_proc())}).$$s=this,$$11.$$arity=-1,$$11))},$Helpers_alias_native$8.$$arity=-2),Opal.def($Helpers_native_accessor$18,"$native_reader",$Helpers_native_writer$15=function($a){var $$13,$post_args=Opal.slice.call(arguments,0,arguments.length);return $send($post_args,"each",[],(($$13=function(name){var $$14,self=null==$$13.$$s?this:$$13.$$s;return null==name&&(name=nil),$send(self,"define_method",[name],(($$14=function(){var self=null==$$14.$$s?this:$$14.$$s;return null==self.native&&(self.native=nil),self.$Native(self.native[name])}).$$s=self,$$14.$$arity=0,$$14))}).$$s=this,$$13.$$arity=1,$$13))},$Helpers_native_writer$15.$$arity=-1),Opal.def($Helpers_native_accessor$18,"$native_writer",$Helpers_native_writer$15=function($a){var $$16,$post_args=Opal.slice.call(arguments,0,arguments.length);return $send($post_args,"each",[],(($$16=function(name){var $$17,self=null==$$16.$$s?this:$$16.$$s;return null==name&&(name=nil),$send(self,"define_method",[name+"="],(($$17=function(value){var self=null==$$17.$$s?this:$$17.$$s;return null==self.native&&(self.native=nil),null==value&&(value=nil),self.$Native(self.native[name]=value)}).$$s=self,$$17.$$arity=1,$$17))}).$$s=this,$$16.$$arity=1,$$16))},$Helpers_native_writer$15.$$arity=-1),Opal.def($Helpers_native_accessor$18,"$native_accessor",$Helpers_native_accessor$18=function($a){var names=Opal.slice.call(arguments,0,arguments.length);return $send(this,"native_reader",Opal.to_a(names)),$send(this,"native_writer",Opal.to_a(names))},$Helpers_native_accessor$18.$$arity=-1)}($nesting[0],$nesting),function($Wrapper_included$21,$Wrapper_to_n$20){var $nesting=[$Wrapper_included$21=$module($Wrapper_included$21,"Wrapper")].concat($Wrapper_to_n$20);Opal.def($Wrapper_included$21,"$initialize",$Wrapper_to_n$20=function(native$){return $truthy($$$("::","Kernel")["$native?"](native$))||$$$("::","Kernel").$raise($$($nesting,"ArgumentError"),native$.$inspect()+" isn't native"),this.native=native$},$Wrapper_to_n$20.$$arity=1),Opal.def($Wrapper_included$21,"$to_n",$Wrapper_to_n$20=function(){return null==this.native&&(this.native=nil),this.native},$Wrapper_to_n$20.$$arity=0),Opal.defs($Wrapper_included$21,"$included",$Wrapper_included$21=function(klass){return klass.$extend($$($nesting,"Helpers"))},$Wrapper_included$21.$$arity=1)}($nesting[0],$nesting),Opal.defs($Native_included$22,"$included",$Native_included$22=function(base){return this.$warn("Including ::Native is deprecated. Please include Native::Wrapper instead."),base.$include($$($nesting,"Wrapper"))},$Native_included$22.$$arity=1)}($nesting[0],$nesting),function(self,$Kernel_native$ques$23){var $Kernel_Native$24,$Kernel_Array$27,$nesting=[self=$module(self,"Kernel")].concat($Kernel_native$ques$23);Opal.def(self,"$native?",$Kernel_native$ques$23=function(value){return null==value||!value.$$class},$Kernel_native$ques$23.$$arity=1),Opal.def(self,"$Native",$Kernel_Native$24=function(obj){var $$25,$$26,$iter=$Kernel_Native$24.$$p;return $iter&&($Kernel_Native$24.$$p=null),$truthy(null==obj)?nil:$truthy(this["$native?"](obj))?$$$($$($nesting,"Native"),"Object").$new(obj):$truthy(obj["$is_a?"]($$($nesting,"Array")))?$send(obj,"map",[],(($$25=function(o){var self=null==$$25.$$s?this:$$25.$$s;return null==o&&(o=nil),self.$Native(o)}).$$s=this,$$25.$$arity=1,$$25)):$truthy(obj["$is_a?"]($$($nesting,"Proc")))?$send(this,"proc",[],(($$26=function($a){var self=null==$$26.$$s?this:$$26.$$s,$post_args=$$26.$$p,block=$post_args||nil;return $post_args&&($$26.$$p=null),$post_args=Opal.slice.call(arguments,0,arguments.length),self.$Native($send(obj,"call",Opal.to_a($post_args),block.$to_proc()))}).$$s=this,$$26.$$arity=-1,$$26)):obj},$Kernel_Native$24.$$arity=1),$alias(self,"_Array","Array"),Opal.def(self,"$Array",$Kernel_Array$27=function(object,$a){var args=$Kernel_Array$27.$$p,block=args||nil;return args&&($Kernel_Array$27.$$p=null),args&&($Kernel_Array$27.$$p=null),args=Opal.slice.call(arguments,1,arguments.length),$truthy(this["$native?"](object))?$send($$$($$($nesting,"Native"),"Array"),"new",[object].concat(Opal.to_a(args)),block.$to_proc()).$to_a():this.$_Array(object)},$Kernel_Array$27.$$arity=-2)}($nesting[0],$nesting),$base=$$($nesting,"Native"),$Object_inspect$42=$$($nesting,"BasicObject"),$Object_class$40=$nesting,[$Object_inspect$42=$klass($base,$Object_inspect$42,"Object")].concat($Object_class$40),$Object_inspect$42.$$prototype.native=nil,$Object_inspect$42.$include($$$($$$("::","Native"),"Wrapper")),Opal.def($Object_inspect$42,"$==",$Object_class$40=function(other){return this.native===$$$("::","Native").$try_convert(other)},$Object_class$40.$$arity=1),Opal.def($Object_inspect$42,"$has_key?",$Object_class$40=function(name){return Opal.hasOwnProperty.call(this.native,name)},$Object_class$40.$$arity=1),$alias($Object_inspect$42,"key?","has_key?"),$alias($Object_inspect$42,"include?","has_key?"),$alias($Object_inspect$42,"member?","has_key?"),Opal.def($Object_inspect$42,"$each",$Object_each$30=function($a){var key,$post_args=$Object_each$30.$$p,$yield=$post_args||nil;if($post_args&&($Object_each$30.$$p=null),$post_args=Opal.slice.call(arguments,0,arguments.length),$yield===nil)return $send(this,"method_missing",["each"].concat(Opal.to_a($post_args)));for(key in this.native)Opal.yieldX($yield,[key,this.native[key]]);return this},$Object_each$30.$$arity=-1),Opal.def($Object_inspect$42,"$[]",$Object_class$40=function(key){var prop=this.native[key];return prop instanceof Function?prop:$$$("::","Native").$call(this.native,key)},$Object_class$40.$$arity=1),Opal.def($Object_inspect$42,"$[]=",$Object_class$40=function(key,value){var native$=$$$("::","Native").$try_convert(value);return $truthy(native$===nil)?this.native[key]=value:this.native[key]=native$},$Object_class$40.$$arity=2),Opal.def($Object_inspect$42,"$merge!",$Object_class$40=function(other){for(var prop in other=$$$("::","Native").$convert(other))this.native[prop]=other[prop];return this},$Object_class$40.$$arity=1),Opal.def($Object_inspect$42,"$respond_to?",$Object_class$40=function(name,include_all){return null==include_all&&(include_all=!1),$$$("::","Kernel").$instance_method("respond_to?").$bind(this).$call(name,include_all)},$Object_class$40.$$arity=-2),Opal.def($Object_inspect$42,"$respond_to_missing?",$Object_class$40=function(name,include_all){return null==include_all&&(include_all=!1),Opal.hasOwnProperty.call(this.native,name)},$Object_class$40.$$arity=-2),Opal.def($Object_inspect$42,"$method_missing",$Object_method_missing$36=function(mid,$a){var $writer,args=$Object_method_missing$36.$$p,block=args||nil;return args&&($Object_method_missing$36.$$p=null),args&&($Object_method_missing$36.$$p=null),args=Opal.slice.call(arguments,1,arguments.length),"="===mid.charAt(mid.length-1)?($writer=[mid.$slice(0,$rb_minus(mid.$length(),1)),args["$[]"](0)],$send(this,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]):$send($$$("::","Native"),"call",[this.native,mid].concat(Opal.to_a(args)),block.$to_proc())},$Object_method_missing$36.$$arity=-2),Opal.def($Object_inspect$42,"$nil?",$Object_class$40=function(){return!1},$Object_class$40.$$arity=0),Opal.def($Object_inspect$42,"$is_a?",$Object_class$40=function(klass){return Opal.is_a(this,klass)},$Object_class$40.$$arity=1),$alias($Object_inspect$42,"kind_of?","is_a?"),Opal.def($Object_inspect$42,"$instance_of?",$Object_class$40=function(klass){return this.$$class===klass},$Object_class$40.$$arity=1),Opal.def($Object_inspect$42,"$class",$Object_class$40=function(){return this.$$class},$Object_class$40.$$arity=0),Opal.def($Object_inspect$42,"$to_a",$Object_to_a$41=function(options){var $iter=$Object_to_a$41.$$p,block=$iter||nil;return $iter&&($Object_to_a$41.$$p=null),$iter&&($Object_to_a$41.$$p=null),null==options&&(options=$hash2([],{})),$send($$$($$$("::","Native"),"Array"),"new",[this.native,options],block.$to_proc()).$to_a()},$Object_to_a$41.$$arity=-1),Opal.def($Object_inspect$42,"$inspect",$Object_inspect$42=function(){return"#<Native:"+String(this.native)+">"},$Object_inspect$42.$$arity=0),function($Array_inspect$49,$Array_length$48){var $Array_initialize$43,$Array_each$44,$nesting=[$Array_inspect$49=$klass($Array_inspect$49,null,"Array")].concat($Array_length$48);$Array_inspect$49.$$prototype.named=$Array_inspect$49.$$prototype.native=$Array_inspect$49.$$prototype.get=$Array_inspect$49.$$prototype.block=$Array_inspect$49.$$prototype.set=$Array_inspect$49.$$prototype.length=nil,$Array_inspect$49.$include($$$($$($nesting,"Native"),"Wrapper")),$Array_inspect$49.$include($$($nesting,"Enumerable")),Opal.def($Array_inspect$49,"$initialize",$Array_initialize$43=function(native$,options){var $iter=$Array_initialize$43.$$p,block=$iter||nil,$ret_or_1=nil,$ret_or_2=nil,$ret_or_3=nil;return $iter&&($Array_initialize$43.$$p=null),$iter&&($Array_initialize$43.$$p=null),null==options&&(options=$hash2([],{})),$send2(this,$find_super(this,"initialize",$Array_initialize$43,!1,!0),"initialize",[native$],null),this.get=$truthy($ret_or_1=options["$[]"]("get"))?$ret_or_1:options["$[]"]("access"),this.named=options["$[]"]("named"),this.set=$truthy($ret_or_2=options["$[]"]("set"))?$ret_or_2:options["$[]"]("access"),this.length=$truthy($ret_or_3=options["$[]"]("length"))?$ret_or_3:"length",this.block=block,$truthy(null==this.$length())?this.$raise($$($nesting,"ArgumentError"),"no length found on the array-like object"):nil},$Array_initialize$43.$$arity=-2),Opal.def($Array_inspect$49,"$each",$Array_each$44=function(){var $iter=$Array_each$44.$$p,block=$iter||nil;if($iter&&($Array_each$44.$$p=null),$iter&&($Array_each$44.$$p=null),!$truthy(block))return this.$enum_for("each");for(var i=0,length=this.$length();i<length;i++)Opal.yield1(block,this["$[]"](i));return this},$Array_each$44.$$arity=0),Opal.def($Array_inspect$49,"$[]",$Array_length$48=function(index){var self=this,result=nil,$case=nil;return $case=index,result=$$($nesting,"String")["$==="]($case)||$$($nesting,"Symbol")["$==="]($case)?$truthy(self.named)?self.native[self.named](index):self.native[index]:$$($nesting,"Integer")["$==="]($case)?$truthy(self.get)?self.native[self.get](index):self.native[index]:nil,$truthy(result)?$truthy(self.block)?self.block.$call(result):self.$Native(result):nil},$Array_length$48.$$arity=1),Opal.def($Array_inspect$49,"$[]=",$Array_length$48=function(index,value){return $truthy(this.set)?this.native[this.set](index,$$($nesting,"Native").$convert(value)):this.native[index]=$$($nesting,"Native").$convert(value)},$Array_length$48.$$arity=2),Opal.def($Array_inspect$49,"$last",$Array_length$48=function(count){var lhs,rhs,index=nil,result=nil;if(null==count&&(count=nil),$truthy(count)){for(index=$rb_minus(this.$length(),1),result=[];$truthy((rhs=0,"number"==typeof(lhs=index)&&"number"==typeof rhs?rhs<=lhs:lhs["$>="](rhs)));)result["$<<"](this["$[]"](index)),index=$rb_minus(index,1);return result}return this["$[]"]($rb_minus(this.$length(),1))},$Array_length$48.$$arity=-1),Opal.def($Array_inspect$49,"$length",$Array_length$48=function(){return this.native[this.length]},$Array_length$48.$$arity=0),$alias($Array_inspect$49,"to_ary","to_a"),Opal.def($Array_inspect$49,"$inspect",$Array_inspect$49=function(){return this.$to_a().$inspect()},$Array_inspect$49.$$arity=0)}($$($nesting,"Native"),$nesting),function($Numeric_to_n$50,$parent_nesting){[$Numeric_to_n$50=$klass($Numeric_to_n$50,null,"Numeric")].concat($parent_nesting),Opal.def($Numeric_to_n$50,"$to_n",$Numeric_to_n$50=function(){return this.valueOf()},$Numeric_to_n$50.$$arity=0)}($nesting[0],$nesting),function($Proc_to_n$51,$parent_nesting){[$Proc_to_n$51=$klass($Proc_to_n$51,null,"Proc")].concat($parent_nesting),Opal.def($Proc_to_n$51,"$to_n",$Proc_to_n$51=function(){return this},$Proc_to_n$51.$$arity=0)}($nesting[0],$nesting),function($String_to_n$52,$parent_nesting){[$String_to_n$52=$klass($String_to_n$52,null,"String")].concat($parent_nesting),Opal.def($String_to_n$52,"$to_n",$String_to_n$52=function(){return this.valueOf()},$String_to_n$52.$$arity=0)}($nesting[0],$nesting),function($Regexp_to_n$53,$parent_nesting){[$Regexp_to_n$53=$klass($Regexp_to_n$53,null,"Regexp")].concat($parent_nesting),Opal.def($Regexp_to_n$53,"$to_n",$Regexp_to_n$53=function(){return this.valueOf()},$Regexp_to_n$53.$$arity=0)}($nesting[0],$nesting),function($MatchData_to_n$54,$parent_nesting){[$MatchData_to_n$54=$klass($MatchData_to_n$54,null,"MatchData")].concat($parent_nesting),$MatchData_to_n$54.$$prototype.matches=nil,Opal.def($MatchData_to_n$54,"$to_n",$MatchData_to_n$54=function(){return this.matches},$MatchData_to_n$54.$$arity=0)}($nesting[0],$nesting),function($Struct_to_n$55,$parent_nesting){var $nesting=[$Struct_to_n$55=$klass($Struct_to_n$55,null,"Struct")].concat($parent_nesting);Opal.def($Struct_to_n$55,"$to_n",$Struct_to_n$55=function(){var $$56,result=nil,result={};return $send(this,"each_pair",[],(($$56=function(name,value){null==$$56.$$s||$$56.$$s;return null==name&&(name=nil),null==value&&(value=nil),result[name]=$$($nesting,"Native").$try_convert(value,value)}).$$s=this,$$56.$$arity=2,$$56)),result},$Struct_to_n$55.$$arity=0)}($nesting[0],$nesting),function($Array_to_n$57,$parent_nesting){var $nesting=[$Array_to_n$57=$klass($Array_to_n$57,null,"Array")].concat($parent_nesting);Opal.def($Array_to_n$57,"$to_n",$Array_to_n$57=function(){for(var result=[],i=0,length=this.length;i<length;i++){var obj=this[i];result.push($$($nesting,"Native").$try_convert(obj,obj))}return result},$Array_to_n$57.$$arity=0)}($nesting[0],$nesting),function($Boolean_to_n$58,$parent_nesting){[$Boolean_to_n$58=$klass($Boolean_to_n$58,null,"Boolean")].concat($parent_nesting),Opal.def($Boolean_to_n$58,"$to_n",$Boolean_to_n$58=function(){return this.valueOf()},$Boolean_to_n$58.$$arity=0)}($nesting[0],$nesting),function($Time_to_n$59,$parent_nesting){[$Time_to_n$59=$klass($Time_to_n$59,null,"Time")].concat($parent_nesting),Opal.def($Time_to_n$59,"$to_n",$Time_to_n$59=function(){return this},$Time_to_n$59.$$arity=0)}($nesting[0],$nesting),function($NilClass_to_n$60,$parent_nesting){[$NilClass_to_n$60=$klass($NilClass_to_n$60,null,"NilClass")].concat($parent_nesting),Opal.def($NilClass_to_n$60,"$to_n",$NilClass_to_n$60=function(){return null},$NilClass_to_n$60.$$arity=0)}($nesting[0],$nesting),function($Hash_to_n$62,$parent_nesting){var $Hash_initialize$61,$nesting=[$Hash_to_n$62=$klass($Hash_to_n$62,null,"Hash")].concat($parent_nesting);$alias($Hash_to_n$62,"_initialize","initialize"),Opal.def($Hash_to_n$62,"$initialize",$Hash_initialize$61=function(defaults){var $iter=$Hash_initialize$61.$$p,block=$iter||nil,self=this;if($iter&&($Hash_initialize$61.$$p=null),$iter&&($Hash_initialize$61.$$p=null),null==defaults||void 0!==defaults.constructor&&defaults.constructor!==Object)return $send(self,"_initialize",[defaults],block.$to_proc());var key,value,smap=self.$$smap,keys=self.$$keys;for(key in defaults)!(value=defaults[key])||void 0!==value.constructor&&value.constructor!==Object?value&&value.$$is_array?(value=value.map(function(item){return!item||void 0!==item.constructor&&item.constructor!==Object?self.$Native(item):$$($nesting,"Hash").$new(item)}),smap[key]=value):smap[key]=self.$Native(value):smap[key]=$$($nesting,"Hash").$new(value),keys.push(key);return self},$Hash_initialize$61.$$arity=-1),Opal.def($Hash_to_n$62,"$to_n",$Hash_to_n$62=function(){for(var key,value,result={},keys=this.$$keys,smap=this.$$smap,i=0,length=keys.length;i<length;i++)value=(key=keys[i]).$$is_string?smap[key]:(key=key.key).value,result[key]=$$($nesting,"Native").$try_convert(value,value);return result},$Hash_to_n$62.$$arity=0)}($nesting[0],$nesting),function($Module_native_module$63,$parent_nesting){[$Module_native_module$63=$klass($Module_native_module$63,null,"Module")].concat($parent_nesting),Opal.def($Module_native_module$63,"$native_module",$Module_native_module$63=function(){return Opal.global[this.$name()]=this},$Module_native_module$63.$$arity=0)}($nesting[0],$nesting),function($Class_native_class$65,$Class_native_alias$64){var $nesting=[$Class_native_class$65=$klass($Class_native_class$65,null,"Class")].concat($Class_native_alias$64);Opal.def($Class_native_class$65,"$native_alias",$Class_native_alias$64=function(new_jsid,existing_mid){var aliased=this.prototype["$"+existing_mid];aliased||this.$raise($$($nesting,"NameError").$new("undefined method `"+existing_mid+"' for class `"+this.$inspect()+"'",existing_mid)),this.prototype[new_jsid]=aliased},$Class_native_alias$64.$$arity=2),Opal.def($Class_native_class$65,"$native_class",$Class_native_class$65=function(){return this.$native_module(),this.new=this.$new},$Class_native_class$65.$$arity=0)}($nesting[0],$nesting),$gvars.$=$gvars.global=self.$Native(Opal.global)};
+Opal.modules.native=function(Opal){var self=Opal.top,$nesting=[],$$=Opal.$r($nesting),nil=Opal.nil,$$$=Opal.$$$,$module=Opal.module,$defs=Opal.defs,$truthy=Opal.truthy,$send=Opal.send,$Kernel=Opal.Kernel,$hash2=Opal.hash2,$range=Opal.range,$to_a=Opal.to_a,$def=Opal.def,$alias=Opal.alias,$klass=Opal.klass,$rb_minus=Opal.rb_minus,$send2=Opal.send2,$find_super=Opal.find_super,$eqeqeq=Opal.eqeqeq,$rb_ge=Opal.rb_ge,$gvars=Opal.gvars;return Opal.add_stubs("try_convert,native?,respond_to?,to_n,raise,inspect,Native,proc,map!,end_with?,define_method,[],convert,call,to_proc,new,each,native_reader,native_writer,extend,warn,include,is_a?,map,to_a,_Array,method_missing,bind,instance_method,slice,-,length,[]=,enum_for,===,>=,<<,each_pair,method_defined?,_initialize,name,native_module"),function($base,$parent_nesting){var self=$module($base,"Native"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);$defs(self,"$is_a?",(function(object,klass){try{return object instanceof this.$try_convert(klass)}catch(e){return!1}}),2),$defs(self,"$try_convert",(function(value,default$){return null==default$&&(default$=nil),this["$native?"](value)?value:value["$respond_to?"]("to_n")?value.$to_n():default$}),-2),$defs(self,"$convert",(function(value){return this["$native?"](value)?value:value["$respond_to?"]("to_n")?value.$to_n():void this.$raise($$("ArgumentError"),value.$inspect()+" isn't native")}),1),$defs(self,"$call",(function $$call(obj,key,$a){var args,block=$$call.$$p||nil,self=this;delete $$call.$$p,args=Opal.slice.call(arguments,2);var prop=obj[key];if(prop instanceof Function){for(var converted=new Array(args.length),i=0,l=args.length;i<l;i++){var item=args[i],conv=self.$try_convert(item);converted[i]=conv===nil?item:conv}return block!==nil&&converted.push(block),self.$Native(prop.apply(obj,converted))}return self.$Native(prop)}),-3),$defs(self,"$proc",(function $$proc(){var block=$$proc.$$p||nil;return delete $$proc.$$p,$truthy(block)||this.$raise($$("LocalJumpError"),"no block given"),$send($Kernel,"proc",[],(function $$2($a){var $post_args,args,self=null==$$2.$$s?this:$$2.$$s,instance=nil;if($post_args=Opal.slice.call(arguments),$send(args=$post_args,"map!",[],(function $$3(arg){return null==arg&&(arg=nil),(null==$$3.$$s?this:$$3.$$s).$Native(arg)}),{$$arity:1,$$s:self}),instance=self.$Native(this),this===Opal.global)return block.apply(self,args);var self_=block.$$s;block.$$s=null;try{return block.apply(instance,args)}finally{block.$$s=self_}}),{$$arity:-1,$$s:this})}),0),function($base,$parent_nesting){var self=$module($base,"Helpers"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);$def(self,"$alias_native",(function $$alias_native(new$,$a,$b){var $post_args,$kwargs,old,as,self=this;if(delete $$alias_native.$$p,$post_args=Opal.slice.call(arguments,1),null==($kwargs=Opal.extract_kwargs($post_args)))$kwargs=$hash2([],{});else if(!$kwargs.$$is_hash)throw Opal.ArgumentError.$new("expected kwargs");return $post_args.length>0&&(old=$post_args.shift()),null==old&&(old=new$),null==(as=$kwargs.$$smap.as)&&(as=nil),$truthy(old["$end_with?"]("="))?$send(self,"define_method",[new$],(function $$4(value){var self=null==$$4.$$s?this:$$4.$$s;return null==self.native&&(self.native=nil),null==value&&(value=nil),self.native[old["$[]"]($range(0,-2,!1))]=$$("Native").$convert(value),value}),{$$arity:1,$$s:self}):$truthy(as)?$send(self,"define_method",[new$],(function $$5($c){var args,block=$$5.$$p||nil,self=null==$$5.$$s?this:$$5.$$s,value=nil;return null==self.native&&(self.native=nil),delete $$5.$$p,args=Opal.slice.call(arguments),value=$send($$("Native"),"call",[self.native,old].concat($to_a(args)),block.$to_proc()),$truthy(value)?as.$new(value.$to_n()):nil}),{$$arity:-1,$$s:self}):$send(self,"define_method",[new$],(function $$6($c){var args,block=$$6.$$p||nil,self=null==$$6.$$s?this:$$6.$$s;return null==self.native&&(self.native=nil),delete $$6.$$p,args=Opal.slice.call(arguments),$send($$("Native"),"call",[self.native,old].concat($to_a(args)),block.$to_proc())}),{$$arity:-1,$$s:self})}),-2),$def(self,"$native_reader",(function($a){var $post_args,self=this;return $post_args=Opal.slice.call(arguments),$send($post_args,"each",[],(function $$7(name){var self=null==$$7.$$s?this:$$7.$$s;return null==name&&(name=nil),$send(self,"define_method",[name],(function $$8(){var self=null==$$8.$$s?this:$$8.$$s;return null==self.native&&(self.native=nil),self.$Native(self.native[name])}),{$$arity:0,$$s:self})}),{$$arity:1,$$s:self})}),-1),$def(self,"$native_writer",(function($a){var $post_args,self=this;return $post_args=Opal.slice.call(arguments),$send($post_args,"each",[],(function $$9(name){var self=null==$$9.$$s?this:$$9.$$s;return null==name&&(name=nil),$send(self,"define_method",[name+"="],(function $$10(value){var self=null==$$10.$$s?this:$$10.$$s;return null==self.native&&(self.native=nil),null==value&&(value=nil),self.$Native(self.native[name]=value)}),{$$arity:1,$$s:self})}),{$$arity:1,$$s:self})}),-1),$def(self,"$native_accessor",(function($a){var $post_args,names,self=this;return $post_args=Opal.slice.call(arguments),$send(self,"native_reader",$to_a(names=$post_args)),$send(self,"native_writer",$to_a(names))}),-1)}($nesting[0],$nesting),function($base,$parent_nesting){var self=$module($base,"Wrapper"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);$def(self,"$initialize",(function(native$){return $truthy($Kernel["$native?"](native$))||$Kernel.$raise($$("ArgumentError"),native$.$inspect()+" isn't native"),this.native=native$}),1),$def(self,"$to_n",(function(){return null==this.native&&(this.native=nil),this.native}),0),$defs(self,"$included",(function(klass){return klass.$extend($$("Helpers"))}),1)}($nesting[0],$nesting),$defs(self,"$included",(function(base){return this.$warn("Including ::Native is deprecated. Please include Native::Wrapper instead."),base.$include($$("Wrapper"))}),1)}($nesting[0],$nesting),function($base,$parent_nesting){var self=$module($base,"Kernel"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);$def(self,"$native?",(function(value){return null==value||!value.$$class}),1),$def(self,"$Native",(function $$Native(obj){return delete $$Native.$$p,$truthy(null==obj)?nil:$truthy(this["$native?"](obj))?$$$($$("Native"),"Object").$new(obj):$truthy(obj["$is_a?"]($$("Array")))?$send(obj,"map",[],(function $$12(o){return null==o&&(o=nil),(null==$$12.$$s?this:$$12.$$s).$Native(o)}),{$$arity:1,$$s:this}):$truthy(obj["$is_a?"]($$("Proc")))?$send(this,"proc",[],(function $$13($a){var args,block=$$13.$$p||nil,self=null==$$13.$$s?this:$$13.$$s;return delete $$13.$$p,args=Opal.slice.call(arguments),self.$Native($send(obj,"call",$to_a(args),block.$to_proc()))}),{$$arity:-1,$$s:this}):obj}),1),$alias(self,"_Array","Array"),$def(self,"$Array",(function $$Array(object,$a){var args,block=$$Array.$$p||nil,self=this;return delete $$Array.$$p,args=Opal.slice.call(arguments,1),$truthy(self["$native?"](object))?$send($$$($$("Native"),"Array"),"new",[object].concat($to_a(args)),block.$to_proc()).$to_a():self.$_Array(object)}),-2)}($nesting[0],$nesting),function($base,$super){var self=$klass($base,$super,"Object");self.$$prototype.native=nil,self.$include($$$($$$("Native"),"Wrapper")),$def(self,"$==",(function(other){return this.native===$$$("Native").$try_convert(other)}),1),$def(self,"$has_key?",(function(name){return Opal.hasOwnProperty.call(this.native,name)}),1),$def(self,"$each",(function $$each($a){var args,$yield=$$each.$$p||nil,self=this;if(delete $$each.$$p,args=Opal.slice.call(arguments),$yield!==nil){for(var key in self.native)Opal.yieldX($yield,[key,self.native[key]]);return self}return $send(self,"method_missing",["each"].concat($to_a(args)))}),-1),$def(self,"$[]",(function(key){var prop=this.native[key];return prop instanceof Function?prop:$$$("Native").$call(this.native,key)}),1),$def(self,"$[]=",(function(key,value){var native$;return native$=$$$("Native").$try_convert(value),$truthy(native$===nil)?this.native[key]=value:this.native[key]=native$}),2),$def(self,"$merge!",(function(other){for(var prop in other=$$$("Native").$convert(other))this.native[prop]=other[prop];return this}),1),$def(self,"$respond_to?",(function(name,include_all){return null==include_all&&(include_all=!1),$Kernel.$instance_method("respond_to?").$bind(this).$call(name,include_all)}),-2),$def(self,"$respond_to_missing?",(function(name,include_all){return null==include_all&&(include_all=!1),Opal.hasOwnProperty.call(this.native,name)}),-2),$def(self,"$method_missing",(function $$method_missing(mid,$a){var args,block=$$method_missing.$$p||nil,self=this,$writer=nil;return delete $$method_missing.$$p,args=Opal.slice.call(arguments,1),"="===mid.charAt(mid.length-1)?($writer=[mid.$slice(0,$rb_minus(mid.$length(),1)),args["$[]"](0)],$send(self,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]):$send($$$("Native"),"call",[self.native,mid].concat($to_a(args)),block.$to_proc())}),-2),$def(self,"$nil?",(function(){return!1}),0),$def(self,"$is_a?",(function(klass){return Opal.is_a(this,klass)}),1),$def(self,"$instance_of?",(function(klass){return this.$$class===klass}),1),$def(self,"$class",(function(){return this.$$class}),0),$def(self,"$to_a",(function $$to_a(options){var block=$$to_a.$$p||nil;return delete $$to_a.$$p,null==options&&(options=$hash2([],{})),$send($$$($$$("Native"),"Array"),"new",[this.native,options],block.$to_proc()).$to_a()}),-1),$def(self,"$inspect",(function(){return"#<Native:"+String(this.native)+">"}),0),$alias(self,"include?","has_key?"),$alias(self,"key?","has_key?"),$alias(self,"kind_of?","is_a?"),$alias(self,"member?","has_key?")}($$("Native"),$$("BasicObject")),function($base,$super,$parent_nesting){var self=$klass($base,null,"Array"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;$proto.named=$proto.native=$proto.get=$proto.block=$proto.set=$proto.length=nil,self.$include($$$($$("Native"),"Wrapper")),self.$include($$("Enumerable")),$def(self,"$initialize",(function $$initialize(native$,options){var block=$$initialize.$$p||nil,$ret_or_1=nil;return delete $$initialize.$$p,null==options&&(options=$hash2([],{})),$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[native$],null),this.get=$truthy($ret_or_1=options["$[]"]("get"))?$ret_or_1:options["$[]"]("access"),this.named=options["$[]"]("named"),this.set=$truthy($ret_or_1=options["$[]"]("set"))?$ret_or_1:options["$[]"]("access"),this.length=$truthy($ret_or_1=options["$[]"]("length"))?$ret_or_1:"length",this.block=block,$truthy(null==this.$length())?this.$raise($$("ArgumentError"),"no length found on the array-like object"):nil}),-2),$def(self,"$each",(function $$each(){var block=$$each.$$p||nil;if(delete $$each.$$p,!$truthy(block))return this.$enum_for("each");for(var i=0,length=this.$length();i<length;i++)Opal.yield1(block,this["$[]"](i));return this}),0),$def(self,"$[]",(function(index){var result,$ret_or_1;return result=$eqeqeq($$("String"),$ret_or_1=index)||$eqeqeq($$("Symbol"),$ret_or_1)?$truthy(this.named)?this.native[this.named](index):this.native[index]:$eqeqeq($$("Integer"),$ret_or_1)?$truthy(this.get)?this.native[this.get](index):this.native[index]:nil,$truthy(result)?$truthy(this.block)?this.block.$call(result):this.$Native(result):nil}),1),$def(self,"$[]=",(function(index,value){return $truthy(this.set)?this.native[this.set](index,$$("Native").$convert(value)):this.native[index]=$$("Native").$convert(value)}),2),$def(self,"$last",(function(count){var index=nil,result=nil;if(null==count&&(count=nil),$truthy(count)){for(index=$rb_minus(this.$length(),1),result=[];$truthy($rb_ge(index,0));)result["$<<"](this["$[]"](index)),index=$rb_minus(index,1);return result}return this["$[]"]($rb_minus(this.$length(),1))}),-1),$def(self,"$length",(function(){return this.native[this.length]}),0),$def(self,"$inspect",(function(){return this.$to_a().$inspect()}),0),$alias(self,"to_ary","to_a")}($$("Native"),0,$nesting),function($base,$super){var self=$klass($base,null,"Numeric");$def(self,"$to_n",(function(){return this.valueOf()}),0)}($nesting[0]),function($base,$super){var self=$klass($base,null,"Proc");$def(self,"$to_n",(function(){return this}),0)}($nesting[0]),function($base,$super){var self=$klass($base,null,"String");$def(self,"$to_n",(function(){return this.valueOf()}),0)}($nesting[0]),function($base,$super){var self=$klass($base,null,"Regexp");$def(self,"$to_n",(function(){return this.valueOf()}),0)}($nesting[0]),function($base,$super){var self=$klass($base,null,"MatchData");self.$$prototype.matches=nil,$def(self,"$to_n",(function(){return this.matches}),0)}($nesting[0]),function($base,$super,$parent_nesting){var self=$klass($base,null,"Struct"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);$def(self,"$to_n",(function(){var result=nil;return result={},$send(this,"each_pair",[],(function(name,value){return null==name&&(name=nil),null==value&&(value=nil),result[name]=$$("Native").$try_convert(value,value)}),2),result}),0)}($nesting[0],0,$nesting),function($base,$super,$parent_nesting){var self=$klass($base,null,"Array"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);$def(self,"$to_n",(function(){for(var result=[],i=0,length=this.length;i<length;i++){var obj=this[i];result.push($$("Native").$try_convert(obj,obj))}return result}),0)}($nesting[0],0,$nesting),function($base,$super){var self=$klass($base,null,"Boolean");$def(self,"$to_n",(function(){return this.valueOf()}),0)}($nesting[0]),function($base,$super){var self=$klass($base,null,"Time");$def(self,"$to_n",(function(){return this}),0)}($nesting[0]),function($base,$super){var self=$klass($base,null,"NilClass");$def(self,"$to_n",(function(){return null}),0)}($nesting[0]),$truthy($$("Hash")["$method_defined?"]("_initialize"))||function($base,$super,$parent_nesting){var self=$klass($base,null,"Hash"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);$alias(self,"_initialize","initialize"),$def(self,"$initialize",(function $$initialize(defaults){var block=$$initialize.$$p||nil,self=this;if(delete $$initialize.$$p,null!=defaults&&(void 0===defaults.constructor||defaults.constructor===Object)){var key,value,smap=self.$$smap,keys=self.$$keys;for(key in defaults)!(value=defaults[key])||void 0!==value.constructor&&value.constructor!==Object?value&&value.$$is_array?(value=value.map((function(item){return!item||void 0!==item.constructor&&item.constructor!==Object?self.$Native(item):$$("Hash").$new(item)})),smap[key]=value):smap[key]=self.$Native(value):smap[key]=$$("Hash").$new(value),keys.push(key);return self}return $send(self,"_initialize",[defaults],block.$to_proc())}),-1),$def(self,"$to_n",(function(){for(var key,value,result={},keys=this.$$keys,smap=this.$$smap,i=0,length=keys.length;i<length;i++)value=(key=keys[i]).$$is_string?smap[key]:(key=key.key).value,result[key]=$$("Native").$try_convert(value,value);return result}),0)}($nesting[0],0,$nesting),function($base,$super){var self=$klass($base,null,"Module");$def(self,"$native_module",(function(){return Opal.global[this.$name()]=this}),0)}($nesting[0]),function($base,$super,$parent_nesting){var self=$klass($base,null,"Class"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);$def(self,"$native_alias",(function(new_jsid,existing_mid){var aliased=this.prototype["$"+existing_mid];aliased||this.$raise($$("NameError").$new("undefined method `"+existing_mid+"' for class `"+this.$inspect()+"'",existing_mid)),this.prototype[new_jsid]=aliased}),2),$def(self,"$native_class",(function(){return this.$native_module(),this.new=this.$new}),0)}($nesting[0],0,$nesting),$gvars.$=$gvars.global=self.$Native(Opal.global)};
diff --git a/opal/master/native.min.js.gz b/opal/master/native.min.js.gz
index 30d5ea3a..dfd96219 100644
Binary files a/opal/master/native.min.js.gz and b/opal/master/native.min.js.gz differ
diff --git a/opal/master/nodejs.js b/opal/master/nodejs.js
index bc2ede0e..4a9e7e7a 100644
--- a/opal/master/nodejs.js
+++ b/opal/master/nodejs.js
@@ -1,47 +1,1758 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["nodejs/kernel"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module;
+Opal.modules["nodejs/base"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $module = Opal.module, $const_set = Opal.const_set, $eqeq = Opal.eqeq, $lambda = Opal.lambda, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $writer = nil;
 
-  Opal.add_stubs(['$warn', '$to_str']);
+  Opal.add_stubs('==,first,shift,write_proc=,-,read_proc=,tty=');
   
+  (function($base, $parent_nesting) {
+    var self = $module($base, 'NodeJS');
+
+    var $nesting = [self].concat($parent_nesting);
+
+    return $const_set($nesting[0], 'VERSION', process.version)
+  })($nesting[0], $nesting);
   Opal.exit = process.exit;
+  $const_set($nesting[0], 'ARGV', process.argv.slice(2));
+  if ($eqeq($$('ARGV').$first(), "--")) {
+    $$('ARGV').$shift()
+  };
+  
+  $writer = [$lambda(function $$1(string){
+    
+    
+    if (string == null) string = nil;;
+    return process.stdout.write(string);;}, 1)];
+  $send($$('STDOUT'), 'write_proc=', $to_a($writer));
+  $writer[$rb_minus($writer["length"], 1)];;
+  
+  $writer = [$lambda(function $$2(string){
+    
+    
+    if (string == null) string = nil;;
+    return process.stderr.write(string);;}, 1)];
+  $send($$('STDERR'), 'write_proc=', $to_a($writer));
+  $writer[$rb_minus($writer["length"], 1)];;
+  var __fs__ = require('fs');
+  
+  $writer = [function(_count) {
+  // Ignore count, return as much as we can get
+  var buf = Buffer.alloc(65536), count;
+  try {
+    count = __fs__.readSync(this.fd, buf, 0, 65536, null);
+  }
+  catch (e) { // Windows systems may raise EOF
+    return nil;
+  }
+  if (count == 0) return nil;
+  return buf.toString('utf8', 0, count);
+}];
+  $send($$('STDIN'), 'read_proc=', $to_a($writer));
+  $writer[$rb_minus($writer["length"], 1)];;
+  
+  $writer = [true];
+  $send($$('STDIN'), 'tty=', $to_a($writer));
+  $writer[$rb_minus($writer["length"], 1)];;
+  
+  $writer = [true];
+  $send($$('STDOUT'), 'tty=', $to_a($writer));
+  $writer[$rb_minus($writer["length"], 1)];;
+  
+  $writer = [true];
+  $send($$('STDERR'), 'tty=', $to_a($writer));
+  return $writer[$rb_minus($writer["length"], 1)];;
+};
+
+Opal.modules["native"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $defs = Opal.defs, $truthy = Opal.truthy, $send = Opal.send, $Kernel = Opal.Kernel, $hash2 = Opal.hash2, $range = Opal.range, $to_a = Opal.to_a, $def = Opal.def, $alias = Opal.alias, $klass = Opal.klass, $rb_minus = Opal.rb_minus, $send2 = Opal.send2, $find_super = Opal.find_super, $eqeqeq = Opal.eqeqeq, $rb_ge = Opal.rb_ge, $gvars = Opal.gvars;
+
+  Opal.add_stubs('try_convert,native?,respond_to?,to_n,raise,inspect,Native,proc,map!,end_with?,define_method,[],convert,call,to_proc,new,each,native_reader,native_writer,extend,warn,include,is_a?,map,to_a,_Array,method_missing,bind,instance_method,slice,-,length,[]=,enum_for,===,>=,<<,each_pair,method_defined?,_initialize,name,native_module');
+  
+  (function($base, $parent_nesting) {
+    var self = $module($base, 'Native');
+
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+    
+    $defs(self, '$is_a?', function $Native_is_a$ques$1(object, klass) {
+      var self = this;
+
+      
+      try {
+        return object instanceof self.$try_convert(klass);
+      }
+      catch (e) {
+        return false;
+      }
+    
+    }, 2);
+    $defs(self, '$try_convert', function $$try_convert(value, default$) {
+      var self = this;
+
+      
+      
+      if (default$ == null) default$ = nil;;
+      
+      if (self['$native?'](value)) {
+        return value;
+      }
+      else if (value['$respond_to?']("to_n")) {
+        return value.$to_n();
+      }
+      else {
+        return default$;
+      }
+    ;
+    }, -2);
+    $defs(self, '$convert', function $$convert(value) {
+      var self = this;
+
+      
+      if (self['$native?'](value)) {
+        return value;
+      }
+      else if (value['$respond_to?']("to_n")) {
+        return value.$to_n();
+      }
+      else {
+        self.$raise($$('ArgumentError'), "" + (value.$inspect()) + " isn't native");
+      }
+    
+    }, 1);
+    $defs(self, '$call', function $$call(obj, key, $a) {
+      var block = $$call.$$p || nil, $post_args, args, self = this;
+
+      delete $$call.$$p;
+      
+      ;
+      
+      $post_args = Opal.slice.call(arguments, 2);
+      
+      args = $post_args;;
+      
+      var prop = obj[key];
+
+      if (prop instanceof Function) {
+        var converted = new Array(args.length);
+
+        for (var i = 0, l = args.length; i < l; i++) {
+          var item = args[i],
+              conv = self.$try_convert(item);
+
+          converted[i] = conv === nil ? item : conv;
+        }
+
+        if (block !== nil) {
+          converted.push(block);
+        }
+
+        return self.$Native(prop.apply(obj, converted));
+      }
+      else {
+        return self.$Native(prop);
+      }
+    ;
+    }, -3);
+    $defs(self, '$proc', function $$proc() {
+      var block = $$proc.$$p || nil, self = this;
+
+      delete $$proc.$$p;
+      
+      ;
+      if (!$truthy(block)) {
+        self.$raise($$('LocalJumpError'), "no block given")
+      };
+      return $send($Kernel, 'proc', [], function $$2($a){var $post_args, args, self = $$2.$$s == null ? this : $$2.$$s, instance = nil;
+
+        
+        
+        $post_args = Opal.slice.call(arguments);
+        
+        args = $post_args;;
+        $send(args, 'map!', [], function $$3(arg){var self = $$3.$$s == null ? this : $$3.$$s;
+
+          
+          
+          if (arg == null) arg = nil;;
+          return self.$Native(arg);}, {$$arity: 1, $$s: self});
+        instance = self.$Native(this);
+        
+        // if global is current scope, run the block in the scope it was defined
+        if (this === Opal.global) {
+          return block.apply(self, args);
+        }
+
+        var self_ = block.$$s;
+        block.$$s = null;
+
+        try {
+          return block.apply(instance, args);
+        }
+        finally {
+          block.$$s = self_;
+        }
+      ;}, {$$arity: -1, $$s: self});
+    }, 0);
+    (function($base, $parent_nesting) {
+      var self = $module($base, 'Helpers');
+
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+      
+      
+      $def(self, '$alias_native', function $$alias_native(new$, $a, $b) {
+        var $post_args, $kwargs, old, as, $yield = $$alias_native.$$p || nil, self = this;
+
+        delete $$alias_native.$$p;
+        
+        
+        $post_args = Opal.slice.call(arguments, 1);
+        
+        $kwargs = Opal.extract_kwargs($post_args);
+        
+        if ($kwargs == null) {
+          $kwargs = $hash2([], {});
+        } else if (!$kwargs.$$is_hash) {
+          throw Opal.ArgumentError.$new('expected kwargs');
+        };
+        
+        if ($post_args.length > 0) old = $post_args.shift();
+        if (old == null) old = new$;;
+        
+        as = $kwargs.$$smap["as"];
+        if (as == null) as = nil;
+        if ($truthy(old['$end_with?']("="))) {
+          return $send(self, 'define_method', [new$], function $$4(value){var self = $$4.$$s == null ? this : $$4.$$s;
+            if (self["native"] == null) self["native"] = nil;
+
+            
+            
+            if (value == null) value = nil;;
+            self["native"][old['$[]']($range(0, -2, false))] = $$('Native').$convert(value);
+            return value;}, {$$arity: 1, $$s: self})
+        } else if ($truthy(as)) {
+          return $send(self, 'define_method', [new$], function $$5($c){var block = $$5.$$p || nil, $post_args, args, self = $$5.$$s == null ? this : $$5.$$s, value = nil;
+            if (self["native"] == null) self["native"] = nil;
+
+            delete $$5.$$p;
+            
+            ;
+            
+            $post_args = Opal.slice.call(arguments);
+            
+            args = $post_args;;
+            value = $send($$('Native'), 'call', [self["native"], old].concat($to_a(args)), block.$to_proc());
+            if ($truthy(value)) {
+              return as.$new(value.$to_n())
+            } else {
+              return nil
+            };}, {$$arity: -1, $$s: self})
+        } else {
+          return $send(self, 'define_method', [new$], function $$6($c){var block = $$6.$$p || nil, $post_args, args, self = $$6.$$s == null ? this : $$6.$$s;
+            if (self["native"] == null) self["native"] = nil;
+
+            delete $$6.$$p;
+            
+            ;
+            
+            $post_args = Opal.slice.call(arguments);
+            
+            args = $post_args;;
+            return $send($$('Native'), 'call', [self["native"], old].concat($to_a(args)), block.$to_proc());}, {$$arity: -1, $$s: self})
+        };
+      }, -2);
+      
+      $def(self, '$native_reader', function $$native_reader($a) {
+        var $post_args, names, self = this;
+
+        
+        
+        $post_args = Opal.slice.call(arguments);
+        
+        names = $post_args;;
+        return $send(names, 'each', [], function $$7(name){var self = $$7.$$s == null ? this : $$7.$$s;
+
+          
+          
+          if (name == null) name = nil;;
+          return $send(self, 'define_method', [name], function $$8(){var self = $$8.$$s == null ? this : $$8.$$s;
+            if (self["native"] == null) self["native"] = nil;
+
+            return self.$Native(self["native"][name])}, {$$arity: 0, $$s: self});}, {$$arity: 1, $$s: self});
+      }, -1);
+      
+      $def(self, '$native_writer', function $$native_writer($a) {
+        var $post_args, names, self = this;
+
+        
+        
+        $post_args = Opal.slice.call(arguments);
+        
+        names = $post_args;;
+        return $send(names, 'each', [], function $$9(name){var self = $$9.$$s == null ? this : $$9.$$s;
+
+          
+          
+          if (name == null) name = nil;;
+          return $send(self, 'define_method', ["" + (name) + "="], function $$10(value){var self = $$10.$$s == null ? this : $$10.$$s;
+            if (self["native"] == null) self["native"] = nil;
+
+            
+            
+            if (value == null) value = nil;;
+            return self.$Native(self["native"][name] = value);}, {$$arity: 1, $$s: self});}, {$$arity: 1, $$s: self});
+      }, -1);
+      return $def(self, '$native_accessor', function $$native_accessor($a) {
+        var $post_args, names, self = this;
+
+        
+        
+        $post_args = Opal.slice.call(arguments);
+        
+        names = $post_args;;
+        $send(self, 'native_reader', $to_a(names));
+        return $send(self, 'native_writer', $to_a(names));
+      }, -1);
+    })($nesting[0], $nesting);
+    (function($base, $parent_nesting) {
+      var self = $module($base, 'Wrapper');
+
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+      
+      
+      $def(self, '$initialize', function $$initialize(native$) {
+        var self = this;
+
+        
+        if (!$truthy($Kernel['$native?'](native$))) {
+          $Kernel.$raise($$('ArgumentError'), "" + (native$.$inspect()) + " isn't native")
+        };
+        return (self["native"] = native$);
+      }, 1);
+      
+      $def(self, '$to_n', function $$to_n() {
+        var self = this;
+        if (self["native"] == null) self["native"] = nil;
+
+        return self["native"]
+      }, 0);
+      return $defs(self, '$included', function $$included(klass) {
+        
+        return klass.$extend($$('Helpers'))
+      }, 1);
+    })($nesting[0], $nesting);
+    return $defs(self, '$included', function $$included(base) {
+      var self = this;
+
+      
+      self.$warn("Including ::Native is deprecated. Please include Native::Wrapper instead.");
+      return base.$include($$('Wrapper'));
+    }, 1);
+  })($nesting[0], $nesting);
   (function($base, $parent_nesting) {
     var self = $module($base, 'Kernel');
 
-    var $nesting = [self].concat($parent_nesting), $Kernel_node_require$1;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+    
+    
+    $def(self, '$native?', function $Kernel_native$ques$11(value) {
+      
+      return value == null || !value.$$class;
+    }, 1);
+    
+    $def(self, '$Native', function $$Native(obj) {
+      var $yield = $$Native.$$p || nil, self = this;
+
+      delete $$Native.$$p;
+      if ($truthy(obj == null)) {
+        return nil
+      } else if ($truthy(self['$native?'](obj))) {
+        return $$$($$('Native'), 'Object').$new(obj)
+      } else if ($truthy(obj['$is_a?']($$('Array')))) {
+        return $send(obj, 'map', [], function $$12(o){var self = $$12.$$s == null ? this : $$12.$$s;
+
+          
+          
+          if (o == null) o = nil;;
+          return self.$Native(o);}, {$$arity: 1, $$s: self})
+      } else if ($truthy(obj['$is_a?']($$('Proc')))) {
+        return $send(self, 'proc', [], function $$13($a){var block = $$13.$$p || nil, $post_args, args, self = $$13.$$s == null ? this : $$13.$$s;
+
+          delete $$13.$$p;
+          
+          ;
+          
+          $post_args = Opal.slice.call(arguments);
+          
+          args = $post_args;;
+          return self.$Native($send(obj, 'call', $to_a(args), block.$to_proc()));}, {$$arity: -1, $$s: self})
+      } else {
+        return obj
+      }
+    }, 1);
+    $alias(self, "_Array", "Array");
+    return $def(self, '$Array', function $$Array(object, $a) {
+      var block = $$Array.$$p || nil, $post_args, args, self = this;
+
+      delete $$Array.$$p;
+      
+      ;
+      
+      $post_args = Opal.slice.call(arguments, 1);
+      
+      args = $post_args;;
+      if ($truthy(self['$native?'](object))) {
+        return $send($$$($$('Native'), 'Array'), 'new', [object].concat($to_a(args)), block.$to_proc()).$to_a()
+      };
+      return self.$_Array(object);
+    }, -2);
+  })($nesting[0], $nesting);
+  (function($base, $super) {
+    var self = $klass($base, $super, 'Object');
+
+    var $proto = self.$$prototype;
+
+    $proto["native"] = nil;
+    
+    self.$include($$$($$$('Native'), 'Wrapper'));
+    
+    $def(self, '$==', function $Object_$eq_eq$14(other) {
+      var self = this;
+
+      return self["native"] === $$$('Native').$try_convert(other)
+    }, 1);
+    
+    $def(self, '$has_key?', function $Object_has_key$ques$15(name) {
+      var self = this;
+
+      return Opal.hasOwnProperty.call(self["native"], name)
+    }, 1);
+    
+    $def(self, '$each', function $$each($a) {
+      var $post_args, args, $yield = $$each.$$p || nil, self = this;
+
+      delete $$each.$$p;
+      
+      
+      $post_args = Opal.slice.call(arguments);
+      
+      args = $post_args;;
+      if (($yield !== nil)) {
+        
+        
+        for (var key in self["native"]) {
+          Opal.yieldX($yield, [key, self["native"][key]])
+        }
+      ;
+        return self;
+      } else {
+        return $send(self, 'method_missing', ["each"].concat($to_a(args)))
+      };
+    }, -1);
+    
+    $def(self, '$[]', function $Object_$$$16(key) {
+      var self = this;
+
+      
+      var prop = self["native"][key];
+
+      if (prop instanceof Function) {
+        return prop;
+      }
+      else {
+        return $$$('Native').$call(self["native"], key)
+      }
+    
+    }, 1);
+    
+    $def(self, '$[]=', function $Object_$$$eq$17(key, value) {
+      var self = this, native$ = nil;
+
+      
+      native$ = $$$('Native').$try_convert(value);
+      if ($truthy(native$ === nil)) {
+        return self["native"][key] = value
+      } else {
+        return self["native"][key] = native$
+      };
+    }, 2);
+    
+    $def(self, '$merge!', function $Object_merge$excl$18(other) {
+      var self = this;
+
+      
+      
+      other = $$$('Native').$convert(other);
+
+      for (var prop in other) {
+        self["native"][prop] = other[prop];
+      }
+    ;
+      return self;
+    }, 1);
+    
+    $def(self, '$respond_to?', function $Object_respond_to$ques$19(name, include_all) {
+      var self = this;
+
+      
+      
+      if (include_all == null) include_all = false;;
+      return $Kernel.$instance_method("respond_to?").$bind(self).$call(name, include_all);
+    }, -2);
+    
+    $def(self, '$respond_to_missing?', function $Object_respond_to_missing$ques$20(name, include_all) {
+      var self = this;
+
+      
+      
+      if (include_all == null) include_all = false;;
+      return Opal.hasOwnProperty.call(self["native"], name);
+    }, -2);
+    
+    $def(self, '$method_missing', function $$method_missing(mid, $a) {
+      var block = $$method_missing.$$p || nil, $post_args, args, self = this, $writer = nil;
+
+      delete $$method_missing.$$p;
+      
+      ;
+      
+      $post_args = Opal.slice.call(arguments, 1);
+      
+      args = $post_args;;
+      
+      if (mid.charAt(mid.length - 1) === '=') {
+        return (($writer = [mid.$slice(0, $rb_minus(mid.$length(), 1)), args['$[]'](0)]), $send(self, '[]=', $to_a($writer)), $writer[$rb_minus($writer["length"], 1)]);
+      }
+      else {
+        return $send($$$('Native'), 'call', [self["native"], mid].concat($to_a(args)), block.$to_proc());
+      }
+    ;
+    }, -2);
+    
+    $def(self, '$nil?', function $Object_nil$ques$21() {
+      
+      return false
+    }, 0);
+    
+    $def(self, '$is_a?', function $Object_is_a$ques$22(klass) {
+      var self = this;
+
+      return Opal.is_a(self, klass);
+    }, 1);
+    
+    $def(self, '$instance_of?', function $Object_instance_of$ques$23(klass) {
+      var self = this;
+
+      return self.$$class === klass;
+    }, 1);
+    
+    $def(self, '$class', function $Object_class$24() {
+      var self = this;
+
+      return self.$$class;
+    }, 0);
+    
+    $def(self, '$to_a', function $$to_a(options) {
+      var block = $$to_a.$$p || nil, self = this;
+
+      delete $$to_a.$$p;
+      
+      ;
+      
+      if (options == null) options = $hash2([], {});;
+      return $send($$$($$$('Native'), 'Array'), 'new', [self["native"], options], block.$to_proc()).$to_a();
+    }, -1);
+    
+    $def(self, '$inspect', function $$inspect() {
+      var self = this;
+
+      return "#<Native:" + (String(self["native"])) + ">"
+    }, 0);
+    $alias(self, "include?", "has_key?");
+    $alias(self, "key?", "has_key?");
+    $alias(self, "kind_of?", "is_a?");
+    return $alias(self, "member?", "has_key?");
+  })($$('Native'), $$('BasicObject'));
+  (function($base, $super, $parent_nesting) {
+    var self = $klass($base, $super, 'Array');
+
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
+
+    $proto.named = $proto["native"] = $proto.get = $proto.block = $proto.set = $proto.length = nil;
+    
+    self.$include($$$($$('Native'), 'Wrapper'));
+    self.$include($$('Enumerable'));
+    
+    $def(self, '$initialize', function $$initialize(native$, options) {
+      var block = $$initialize.$$p || nil, self = this, $ret_or_1 = nil;
+
+      delete $$initialize.$$p;
+      
+      ;
+      
+      if (options == null) options = $hash2([], {});;
+      $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [native$], null);
+      self.get = ($truthy(($ret_or_1 = options['$[]']("get"))) ? ($ret_or_1) : (options['$[]']("access")));
+      self.named = options['$[]']("named");
+      self.set = ($truthy(($ret_or_1 = options['$[]']("set"))) ? ($ret_or_1) : (options['$[]']("access")));
+      self.length = ($truthy(($ret_or_1 = options['$[]']("length"))) ? ($ret_or_1) : ("length"));
+      self.block = block;
+      if ($truthy(self.$length() == null)) {
+        return self.$raise($$('ArgumentError'), "no length found on the array-like object")
+      } else {
+        return nil
+      };
+    }, -2);
+    
+    $def(self, '$each', function $$each() {
+      var block = $$each.$$p || nil, self = this;
+
+      delete $$each.$$p;
+      
+      ;
+      if (!$truthy(block)) {
+        return self.$enum_for("each")
+      };
+      
+      for (var i = 0, length = self.$length(); i < length; i++) {
+        Opal.yield1(block, self['$[]'](i));
+      }
+    ;
+      return self;
+    }, 0);
+    
+    $def(self, '$[]', function $Array_$$$25(index) {
+      var self = this, result = nil, $ret_or_1 = nil;
+
+      
+      result = (($eqeqeq($$('String'), ($ret_or_1 = index)) || ($eqeqeq($$('Symbol'), $ret_or_1))) ? (($truthy(self.named) ? (self["native"][self.named](index)) : (self["native"][index]))) : ($eqeqeq($$('Integer'), $ret_or_1) ? (($truthy(self.get) ? (self["native"][self.get](index)) : (self["native"][index]))) : (nil)));
+      if ($truthy(result)) {
+        if ($truthy(self.block)) {
+          return self.block.$call(result)
+        } else {
+          return self.$Native(result)
+        }
+      } else {
+        return nil
+      };
+    }, 1);
+    
+    $def(self, '$[]=', function $Array_$$$eq$26(index, value) {
+      var self = this;
+
+      if ($truthy(self.set)) {
+        return self["native"][self.set](index, $$('Native').$convert(value))
+      } else {
+        return self["native"][index] = $$('Native').$convert(value)
+      }
+    }, 2);
+    
+    $def(self, '$last', function $$last(count) {
+      var $a, self = this, index = nil, result = nil;
+
+      
+      
+      if (count == null) count = nil;;
+      if ($truthy(count)) {
+        
+        index = $rb_minus(self.$length(), 1);
+        result = [];
+        while ($truthy($rb_ge(index, 0))) {
+          
+          result['$<<'](self['$[]'](index));
+          index = $rb_minus(index, 1);
+        };
+        return result;
+      } else {
+        return self['$[]']($rb_minus(self.$length(), 1))
+      };
+    }, -1);
+    
+    $def(self, '$length', function $$length() {
+      var self = this;
+
+      return self["native"][self.length]
+    }, 0);
+    
+    $def(self, '$inspect', function $$inspect() {
+      var self = this;
+
+      return self.$to_a().$inspect()
+    }, 0);
+    return $alias(self, "to_ary", "to_a");
+  })($$('Native'), null, $nesting);
+  (function($base, $super) {
+    var self = $klass($base, $super, 'Numeric');
+
+    
+    return $def(self, '$to_n', function $$to_n() {
+      var self = this;
+
+      return self.valueOf();
+    }, 0)
+  })($nesting[0], null);
+  (function($base, $super) {
+    var self = $klass($base, $super, 'Proc');
+
+    
+    return $def(self, '$to_n', function $$to_n() {
+      var self = this;
+
+      return self
+    }, 0)
+  })($nesting[0], null);
+  (function($base, $super) {
+    var self = $klass($base, $super, 'String');
+
+    
+    return $def(self, '$to_n', function $$to_n() {
+      var self = this;
+
+      return self.valueOf();
+    }, 0)
+  })($nesting[0], null);
+  (function($base, $super) {
+    var self = $klass($base, $super, 'Regexp');
+
+    
+    return $def(self, '$to_n', function $$to_n() {
+      var self = this;
+
+      return self.valueOf();
+    }, 0)
+  })($nesting[0], null);
+  (function($base, $super) {
+    var self = $klass($base, $super, 'MatchData');
+
+    var $proto = self.$$prototype;
+
+    $proto.matches = nil;
+    return $def(self, '$to_n', function $$to_n() {
+      var self = this;
+
+      return self.matches
+    }, 0)
+  })($nesting[0], null);
+  (function($base, $super, $parent_nesting) {
+    var self = $klass($base, $super, 'Struct');
+
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+    return $def(self, '$to_n', function $$to_n() {
+      var self = this, result = nil;
+
+      
+      result = {};
+      $send(self, 'each_pair', [], function $$27(name, value){
+        
+        
+        if (name == null) name = nil;;
+        
+        if (value == null) value = nil;;
+        return result[name] = $$('Native').$try_convert(value, value);}, 2);
+      return result;
+    }, 0)
+  })($nesting[0], null, $nesting);
+  (function($base, $super, $parent_nesting) {
+    var self = $klass($base, $super, 'Array');
+
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+    return $def(self, '$to_n', function $$to_n() {
+      var self = this;
+
+      
+      var result = [];
+
+      for (var i = 0, length = self.length; i < length; i++) {
+        var obj = self[i];
+
+        result.push($$('Native').$try_convert(obj, obj));
+      }
+
+      return result;
+    
+    }, 0)
+  })($nesting[0], null, $nesting);
+  (function($base, $super) {
+    var self = $klass($base, $super, 'Boolean');
+
+    
+    return $def(self, '$to_n', function $$to_n() {
+      var self = this;
+
+      return self.valueOf();
+    }, 0)
+  })($nesting[0], null);
+  (function($base, $super) {
+    var self = $klass($base, $super, 'Time');
+
+    
+    return $def(self, '$to_n', function $$to_n() {
+      var self = this;
+
+      return self
+    }, 0)
+  })($nesting[0], null);
+  (function($base, $super) {
+    var self = $klass($base, $super, 'NilClass');
+
+    
+    return $def(self, '$to_n', function $$to_n() {
+      
+      return null;
+    }, 0)
+  })($nesting[0], null);
+  if (!$truthy($$('Hash')['$method_defined?']("_initialize"))) {
+    (function($base, $super, $parent_nesting) {
+      var self = $klass($base, $super, 'Hash');
+
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+      
+      $alias(self, "_initialize", "initialize");
+      
+      $def(self, '$initialize', function $$initialize(defaults) {
+        var block = $$initialize.$$p || nil, self = this;
+
+        delete $$initialize.$$p;
+        
+        ;
+        ;
+        
+        if (defaults != null &&
+             (defaults.constructor === undefined ||
+               defaults.constructor === Object)) {
+          var smap = self.$$smap,
+              keys = self.$$keys,
+              key, value;
+
+          for (key in defaults) {
+            value = defaults[key];
+
+            if (value &&
+                 (value.constructor === undefined ||
+                   value.constructor === Object)) {
+              smap[key] = $$('Hash').$new(value);
+            } else if (value && value.$$is_array) {
+              value = value.map(function(item) {
+                if (item &&
+                     (item.constructor === undefined ||
+                       item.constructor === Object)) {
+                  return $$('Hash').$new(item);
+                }
+
+                return self.$Native(item);
+              });
+              smap[key] = value
+            } else {
+              smap[key] = self.$Native(value);
+            }
+
+            keys.push(key);
+          }
+
+          return self;
+        }
+
+        return $send(self, '_initialize', [defaults], block.$to_proc());
+      ;
+      }, -1);
+      return $def(self, '$to_n', function $$to_n() {
+        var self = this;
+
+        
+        var result = {},
+            keys = self.$$keys,
+            smap = self.$$smap,
+            key, value;
+
+        for (var i = 0, length = keys.length; i < length; i++) {
+          key = keys[i];
+
+          if (key.$$is_string) {
+            value = smap[key];
+          } else {
+            key = key.key;
+            value = key.value;
+          }
+
+          result[key] = $$('Native').$try_convert(value, value);
+        }
+
+        return result;
+      
+      }, 0);
+    })($nesting[0], null, $nesting)
+  };
+  (function($base, $super) {
+    var self = $klass($base, $super, 'Module');
+
+    
+    return $def(self, '$native_module', function $$native_module() {
+      var self = this;
+
+      return Opal.global[self.$name()] = self
+    }, 0)
+  })($nesting[0], null);
+  (function($base, $super, $parent_nesting) {
+    var self = $klass($base, $super, 'Class');
+
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+    
+    
+    $def(self, '$native_alias', function $$native_alias(new_jsid, existing_mid) {
+      var self = this;
+
+      
+      var aliased = self.prototype['$' + existing_mid];
+      if (!aliased) {
+        self.$raise($$('NameError').$new("undefined method `" + (existing_mid) + "' for class `" + (self.$inspect()) + "'", existing_mid));
+      }
+      self.prototype[new_jsid] = aliased;
+    
+    }, 2);
+    return $def(self, '$native_class', function $$native_class() {
+      var self = this;
+
+      
+      self.$native_module();
+      return self["new"] = self.$new;;
+    }, 0);
+  })($nesting[0], null, $nesting);
+  return ($gvars.$ = ($gvars.global = self.$Native(Opal.global)));
+};
+
+Opal.modules["buffer/array"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $gvars = Opal.gvars, $defs = Opal.defs, $eqeq = Opal.eqeq, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def, $truthy = Opal.truthy, $alias = Opal.alias;
+
+  Opal.add_stubs('include,[],name_for,attr_reader,==,for,to_n,enum_for');
+  return (function($base, $super, $parent_nesting) {
+    var self = $klass($base, $super, 'Buffer');
+
+    var $nesting = [self].concat($parent_nesting);
+
+    return (function($base, $super, $parent_nesting) {
+      var self = $klass($base, $super, 'Array');
+
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
+
+      $proto["native"] = nil;
+      
+      self.$include($$$($$('Native'), 'Wrapper'));
+      $defs(self, '$for', function $Array_for$1(bits, type) {
+                if ($gvars.$ == null) $gvars.$ = nil;
+
+        return $gvars.$['$[]']("" + ($$('Buffer').$name_for(bits, type)) + "Array")
+      }, 2);
+      self.$include($$('Enumerable'));
+      self.$attr_reader("buffer", "type");
+      
+      $def(self, '$initialize', function $$initialize(buffer, bits, type) {
+        var $yield = $$initialize.$$p || nil, self = this;
+
+        delete $$initialize.$$p;
+        
+        
+        if (bits == null) bits = nil;;
+        
+        if (type == null) type = nil;;
+        if ($eqeq($$('Native'), buffer)) {
+          $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [buffer], null)
+        } else {
+          
+          var klass = $$('Array').$for(bits, type);
+
+          $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [new klass(buffer.$to_n())], null)
+        
+        };
+        self.buffer = buffer;
+        return (self.type = type);
+      }, -2);
+      
+      $def(self, '$bits', function $$bits() {
+        var self = this;
+
+        return self["native"].BYTES_PER_ELEMENT * 8
+      }, 0);
+      
+      $def(self, '$[]', function $Array_$$$2(index, offset) {
+        var self = this;
+
+        
+        
+        if (offset == null) offset = nil;;
+        if ($truthy(offset)) {
+          return self["native"].subarray(index, offset)
+        } else {
+          return self["native"][index]
+        };
+      }, -2);
+      
+      $def(self, '$[]=', function $Array_$$$eq$3(index, value) {
+        var self = this;
+
+        return self["native"][index] = value
+      }, 2);
+      
+      $def(self, '$bytesize', function $$bytesize() {
+        var self = this;
+
+        return self["native"].byteLength
+      }, 0);
+      
+      $def(self, '$each', function $$each() {
+        var $yield = $$each.$$p || nil, self = this;
+
+        delete $$each.$$p;
+        
+        if (!($yield !== nil)) {
+          return self.$enum_for("each")
+        };
+        
+        for (var i = 0, length = self["native"].length; i < length; i++) {
+          Opal.yield1($yield, self["native"][i])
+        }
+      ;
+        return self;
+      }, 0);
+      
+      $def(self, '$length', function $$length() {
+        var self = this;
+
+        return self["native"].length
+      }, 0);
+      
+      $def(self, '$merge!', function $Array_merge$excl$4(other, offset) {
+        var self = this;
+
+        
+        ;
+        return self["native"].set(other.$to_n(), offset);
+      }, -2);
+      return $alias(self, "size", "length");
+    })($nesting[0], null, $nesting)
+  })($nesting[0], null, $nesting)
+};
+
+Opal.modules["buffer/view"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $gvars = Opal.gvars, $defs = Opal.defs, $truthy = Opal.truthy, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def, $alias = Opal.alias;
+
+  Opal.add_stubs('include,!,nil?,[],attr_reader,native?,to_n,name_for');
+  return (function($base, $super, $parent_nesting) {
+    var self = $klass($base, $super, 'Buffer');
+
+    var $nesting = [self].concat($parent_nesting);
+
+    return (function($base, $super, $parent_nesting) {
+      var self = $klass($base, $super, 'View');
+
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
+
+      $proto["native"] = nil;
+      
+      self.$include($$$($$('Native'), 'Wrapper'));
+      $defs(self, '$supported?', function $View_supported$ques$1() {
+                if ($gvars.$ == null) $gvars.$ = nil;
+
+        return $gvars.$['$[]']("DataView")['$nil?']()['$!']()
+      }, 0);
+      self.$attr_reader("buffer", "offset");
+      
+      $def(self, '$initialize', function $$initialize(buffer, offset, length) {
+        var $yield = $$initialize.$$p || nil, self = this;
+
+        delete $$initialize.$$p;
+        
+        
+        if (offset == null) offset = nil;;
+        
+        if (length == null) length = nil;;
+        if ($truthy(self['$native?'](buffer))) {
+          $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [buffer], null)
+        } else if (($truthy(offset) && ($truthy(length)))) {
+          $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [new DataView(buffer.$to_n(), offset.$to_n(), length.$to_n())], null)
+        } else if ($truthy(offset)) {
+          $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [new DataView(buffer.$to_n(), offset.$to_n())], null)
+        } else {
+          $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [new DataView(buffer.$to_n())], null)
+        };
+        self.buffer = buffer;
+        return (self.offset = offset);
+      }, -2);
+      
+      $def(self, '$length', function $$length() {
+        var self = this;
+
+        return self["native"].byteLength
+      }, 0);
+      
+      $def(self, '$get', function $$get(offset, bits, type, little) {
+        var self = this;
+
+        
+        
+        if (bits == null) bits = 8;;
+        
+        if (type == null) type = "unsigned";;
+        
+        if (little == null) little = false;;
+        return self["native"]["get" + $$('Buffer').$name_for(bits, type)](offset, little);
+      }, -2);
+      $alias(self, "[]", "get");
+      
+      $def(self, '$set', function $$set(offset, value, bits, type, little) {
+        var self = this;
+
+        
+        
+        if (bits == null) bits = 8;;
+        
+        if (type == null) type = "unsigned";;
+        
+        if (little == null) little = false;;
+        return self["native"]["set" + $$('Buffer').$name_for(bits, type)](offset, value, little);
+      }, -3);
+      $alias(self, "[]=", "set");
+      
+      $def(self, '$get_int8', function $$get_int8(offset, little) {
+        var self = this;
+
+        
+        
+        if (little == null) little = false;;
+        return self["native"].getInt8(offset, little);
+      }, -2);
+      
+      $def(self, '$set_int8', function $$set_int8(offset, value, little) {
+        var self = this;
+
+        
+        
+        if (little == null) little = false;;
+        return self["native"].setInt8(offset, value, little);
+      }, -3);
+      
+      $def(self, '$get_uint8', function $$get_uint8(offset, little) {
+        var self = this;
+
+        
+        
+        if (little == null) little = false;;
+        return self["native"].getUint8(offset, little);
+      }, -2);
+      
+      $def(self, '$set_uint8', function $$set_uint8(offset, value, little) {
+        var self = this;
+
+        
+        
+        if (little == null) little = false;;
+        return self["native"].setUint8(offset, value, little);
+      }, -3);
+      
+      $def(self, '$get_int16', function $$get_int16(offset, little) {
+        var self = this;
+
+        
+        
+        if (little == null) little = false;;
+        return self["native"].getInt16(offset, little);
+      }, -2);
+      
+      $def(self, '$set_int16', function $$set_int16(offset, value, little) {
+        var self = this;
+
+        
+        
+        if (little == null) little = false;;
+        return self["native"].setInt16(offset, value, little);
+      }, -3);
+      
+      $def(self, '$get_uint16', function $$get_uint16(offset, little) {
+        var self = this;
+
+        
+        
+        if (little == null) little = false;;
+        return self["native"].getUint16(offset, little);
+      }, -2);
+      
+      $def(self, '$set_uint16', function $$set_uint16(offset, value, little) {
+        var self = this;
+
+        
+        
+        if (little == null) little = false;;
+        return self["native"].setUint16(offset, value, little);
+      }, -3);
+      
+      $def(self, '$get_int32', function $$get_int32(offset, little) {
+        var self = this;
+
+        
+        
+        if (little == null) little = false;;
+        return self["native"].getInt32(offset, little);
+      }, -2);
+      
+      $def(self, '$set_int32', function $$set_int32(offset, value, little) {
+        var self = this;
+
+        
+        
+        if (little == null) little = false;;
+        return self["native"].setInt32(offset, value, little);
+      }, -3);
+      
+      $def(self, '$get_uint32', function $$get_uint32(offset, little) {
+        var self = this;
+
+        
+        
+        if (little == null) little = false;;
+        return self["native"].getUint32(offset, little);
+      }, -2);
+      
+      $def(self, '$set_uint32', function $$set_uint32(offset, value, little) {
+        var self = this;
+
+        
+        
+        if (little == null) little = false;;
+        return self["native"].setUint32(offset, value, little);
+      }, -3);
+      
+      $def(self, '$get_float32', function $$get_float32(offset, little) {
+        var self = this;
+
+        
+        
+        if (little == null) little = false;;
+        return self["native"].getFloat32(offset, little);
+      }, -2);
+      
+      $def(self, '$set_float32', function $$set_float32(offset, value, little) {
+        var self = this;
+
+        
+        
+        if (little == null) little = false;;
+        return self["native"].setFloat32(offset, value, little);
+      }, -3);
+      
+      $def(self, '$get_float64', function $$get_float64(offset, little) {
+        var self = this;
+
+        
+        
+        if (little == null) little = false;;
+        return self["native"].getFloat64(offset, little);
+      }, -2);
+      
+      $def(self, '$set_float64', function $$set_float64(offset, value, little) {
+        var self = this;
+
+        
+        
+        if (little == null) little = false;;
+        return self["native"].setFloat64(offset, value, little);
+      }, -3);
+      return $alias(self, "size", "length");
+    })($nesting[0], null, $nesting)
+  })($nesting[0], null, $nesting)
+};
+
+Opal.modules["buffer"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $gvars = Opal.gvars, $defs = Opal.defs, $eqeqeq = Opal.eqeqeq, $truthy = Opal.truthy, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def, $alias = Opal.alias;
+
+  Opal.add_stubs('require,include,!,nil?,[],===,native?,new,pack,to_a');
+  
+  self.$require("native");
+  self.$require("buffer/array");
+  self.$require("buffer/view");
+  return (function($base, $super, $parent_nesting) {
+    var self = $klass($base, $super, 'Buffer');
+
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
+
+    $proto["native"] = nil;
+    
+    self.$include($$$($$('Native'), 'Wrapper'));
+    $defs(self, '$supported?', function $Buffer_supported$ques$1() {
+            if ($gvars.$ == null) $gvars.$ = nil;
+
+      return $gvars.$['$[]']("ArrayBuffer")['$nil?']()['$!']()
+    }, 0);
+    $defs(self, '$name_for', function $$name_for(bits, type) {
+      var part = nil, $ret_or_1 = nil;
+
+      
+      part = ($eqeqeq("unsigned", ($ret_or_1 = type)) ? ("Uint") : ($eqeqeq("signed", $ret_or_1) ? ("Int") : ($eqeqeq("float", $ret_or_1) ? ("Float") : (nil))));
+      return "" + (part) + (bits);
+    }, 2);
+    
+    $def(self, '$initialize', function $$initialize(size, bits) {
+      var $yield = $$initialize.$$p || nil, self = this;
+
+      delete $$initialize.$$p;
+      
+      
+      if (bits == null) bits = 8;;
+      if ($truthy(self['$native?'](size))) {
+        return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [size], null)
+      } else {
+        return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [new ArrayBuffer(size * (bits / 8))], null)
+      };
+    }, -2);
+    
+    $def(self, '$length', function $$length() {
+      var self = this;
+
+      return self["native"].byteLength
+    }, 0);
+    
+    $def(self, '$to_a', function $$to_a(bits, type) {
+      var self = this;
+
+      
+      
+      if (bits == null) bits = 8;;
+      
+      if (type == null) type = "unsigned";;
+      return $$('Array').$new(self, bits, type);
+    }, -1);
+    
+    $def(self, '$view', function $$view(offset, length) {
+      var self = this;
 
+      
+      
+      if (offset == null) offset = nil;;
+      
+      if (length == null) length = nil;;
+      return $$('View').$new(self, offset, length);
+    }, -1);
     
-    Opal.const_set($nesting[0], 'NODE_REQUIRE', require);
-    return (Opal.def(self, '$node_require', $Kernel_node_require$1 = function $$node_require(path) {
+    $def(self, '$to_s', function $$to_s() {
       var self = this;
 
+      return self.$to_a().$to_a().$pack("c*")
+    }, 0);
+    return $alias(self, "size", "length");
+  })($nesting[0], null, $nesting);
+};
+
+Opal.modules["corelib/process/status"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $def = Opal.def;
+
+  Opal.add_stubs('attr_reader,==');
+  return (function($base, $parent_nesting) {
+    var self = $module($base, 'Process');
+
+    var $nesting = [self].concat($parent_nesting);
+
+    return (function($base, $super) {
+      var self = $klass($base, $super, 'Status');
+
+      var $proto = self.$$prototype;
+
+      $proto.status = $proto.pid = nil;
+      
+      
+      $def(self, '$initialize', function $$initialize(status, pid) {
+        var $a, self = this;
+
+        return $a = [status, pid], (self.status = $a[0]), (self.pid = $a[1]), $a
+      }, 2);
+      
+      $def(self, '$exitstatus', function $$exitstatus() {
+        var self = this;
+
+        return self.status
+      }, 0);
+      self.$attr_reader("pid");
+      
+      $def(self, '$success?', function $Status_success$ques$1() {
+        var self = this;
+
+        return self.status['$=='](0)
+      }, 0);
+      return $def(self, '$inspect', function $$inspect() {
+        var self = this;
+
+        return "#<Process::Status: pid " + (self.pid) + " exit " + (self.status) + ">"
+      }, 0);
+    })($nesting[0], null)
+  })('::', $nesting)
+};
+
+Opal.modules["nodejs/kernel"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $hash2 = Opal.hash2, $truthy = Opal.truthy, $eqeqeq = Opal.eqeqeq, $gvars = Opal.gvars, $neqeq = Opal.neqeq, $def = Opal.def;
+
+  Opal.add_stubs('require,is_a?,first,shift,to_n,merge,empty?,===,[],new,!=,raise,==,encode,to_s');
+  
+  self.$require("buffer");
+  self.$require("corelib/process/status");
+  return (function($base, $parent_nesting) {
+    var self = $module($base, 'Kernel');
+
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+    if (self.__child_process__ == null) self.__child_process__ = nil;
+
+    
+    self.__child_process__ = require('child_process');
+    var __child_process__ = self.__child_process__;
+    
+    $def(self, '$system', function $$system($a, $b) {
+      var $post_args, $kwargs, argv, exception, self = this, env = nil, cmdname = nil, out = nil, status = nil, pid = nil;
+
+      
+      
+      $post_args = Opal.slice.call(arguments);
+      
+      $kwargs = Opal.extract_kwargs($post_args);
       
-      self.$warn("[DEPRECATION] node_require is deprecated. Please use `require('module')` instead.");
-      return $$($nesting, 'NODE_REQUIRE')(path.$to_str());
-    }, $Kernel_node_require$1.$$arity = 1), nil) && 'node_require';
+      if ($kwargs == null) {
+        $kwargs = $hash2([], {});
+      } else if (!$kwargs.$$is_hash) {
+        throw Opal.ArgumentError.$new('expected kwargs');
+      };
+      
+      argv = $post_args;;
+      
+      exception = $kwargs.$$smap["exception"];
+      if (exception == null) exception = false;
+      env = $hash2([], {});
+      if ($truthy(argv.$first()['$is_a?']($$('Hash')))) {
+        env = argv.$shift()
+      };
+      env = $$('ENV').$merge(env).$to_n();
+      cmdname = argv.$shift();
+      out = ($truthy(argv['$empty?']()) ? (__child_process__.spawnSync(cmdname, { shell: true, stdio: 'inherit', env: env })) : ($eqeqeq($$('Array'), cmdname) ? (__child_process__.spawnSync(cmdname['$[]'](0), argv, { argv0: cmdname['$[]'](1), stdio: 'inherit', env: env })) : (__child_process__.spawnSync(cmdname, argv, { stdio: 'inherit', env: env }))));
+      status = out["status"];
+      if ($truthy(status === null)) {
+        status = 127
+      };
+      pid = out["pid"];
+      $gvars["?"] = $$$($$('Process'), 'Status').$new(status, pid);
+      if (($truthy(exception) && ($neqeq(status, 0)))) {
+        self.$raise("Command failed with exit " + (status) + ": " + (cmdname))
+      };
+      return status['$=='](0);
+    }, -1);
+    return $def(self, '$`', function $Kernel_$$1(cmdline) {
+      
+      return $$('Buffer').$new(__child_process__.execSync(cmdline)).$to_s().$encode("UTF-8")
+    }, 1);
   })($nesting[0], $nesting);
-  return Opal.const_set($nesting[0], 'ARGV', process.argv.slice(2));
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["nodejs/file"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $truthy = Opal.truthy, $gvars = Opal.gvars;
+Opal.modules["corelib/file"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $truthy = Opal.truthy, $klass = Opal.klass, $const_set = Opal.const_set, $Opal = Opal.Opal, $regexp = Opal.regexp, $rb_plus = Opal.rb_plus, $def = Opal.def, $Kernel = Opal.Kernel, $eqeq = Opal.eqeq, $rb_lt = Opal.rb_lt, $rb_minus = Opal.rb_minus, $range = Opal.range, $send = Opal.send, $alias = Opal.alias;
+
+  Opal.add_stubs('respond_to?,to_path,coerce_to!,pwd,split,sub,+,unshift,join,home,raise,start_with?,absolute_path,==,<,dirname,-,basename,empty?,rindex,[],length,nil?,gsub,find,=~,map,each_with_index,flatten,reject,to_proc,end_with?');
+  return (function($base, $super, $parent_nesting) {
+    var self = $klass($base, $super, 'File');
+
+    var $nesting = [self].concat($parent_nesting), windows_root_rx = nil;
+
+    
+    $const_set($nesting[0], 'Separator', $const_set($nesting[0], 'SEPARATOR', "/"));
+    $const_set($nesting[0], 'ALT_SEPARATOR', nil);
+    $const_set($nesting[0], 'PATH_SEPARATOR', ":");
+    $const_set($nesting[0], 'FNM_SYSCASE', 0);
+    windows_root_rx = /^[a-zA-Z]:(?:\\|\/)/;
+    return (function(self, $parent_nesting) {
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+      
+      
+      $def(self, '$absolute_path', function $$absolute_path(path, basedir) {
+        var sep = nil, sep_chars = nil, new_parts = nil, $ret_or_1 = nil, path_abs = nil, basedir_abs = nil, parts = nil, leading_sep = nil, abs = nil, new_path = nil;
+
+        
+        
+        if (basedir == null) basedir = nil;;
+        sep = $$('SEPARATOR');
+        sep_chars = $sep_chars();
+        new_parts = [];
+        path = ($truthy(path['$respond_to?']("to_path")) ? (path.$to_path()) : (path));
+        path = $Opal['$coerce_to!'](path, $$$('String'), "to_str");
+        basedir = ($truthy(($ret_or_1 = basedir)) ? ($ret_or_1) : ($$$('Dir').$pwd()));
+        path_abs = path.substr(0, sep.length) === sep || windows_root_rx.test(path);
+        basedir_abs = basedir.substr(0, sep.length) === sep || windows_root_rx.test(basedir);
+        if ($truthy(path_abs)) {
+          
+          parts = path.$split($regexp(["[", sep_chars, "]"]));
+          leading_sep = windows_root_rx.test(path) ? '' : path.$sub($regexp(["^([", sep_chars, "]+).*$"]), "\\1");
+          abs = true;
+        } else {
+          
+          parts = $rb_plus(basedir.$split($regexp(["[", sep_chars, "]"])), path.$split($regexp(["[", sep_chars, "]"])));
+          leading_sep = windows_root_rx.test(basedir) ? '' : basedir.$sub($regexp(["^([", sep_chars, "]+).*$"]), "\\1");
+          abs = basedir_abs;
+        };
+        
+        var part;
+        for (var i = 0, ii = parts.length; i < ii; i++) {
+          part = parts[i];
+
+          if (
+            (part === nil) ||
+            (part === ''  && ((new_parts.length === 0) || abs)) ||
+            (part === '.' && ((new_parts.length === 0) || abs))
+          ) {
+            continue;
+          }
+          if (part === '..') {
+            new_parts.pop();
+          } else {
+            new_parts.push(part);
+          }
+        }
+
+        if (!abs && parts[0] !== '.') {
+          new_parts.$unshift(".")
+        }
+      ;
+        new_path = new_parts.$join(sep);
+        if ($truthy(abs)) {
+          new_path = $rb_plus(leading_sep, new_path)
+        };
+        return new_path;
+      }, -2);
+      
+      $def(self, '$expand_path', function $$expand_path(path, basedir) {
+        var self = this, sep = nil, sep_chars = nil, home = nil, leading_sep = nil, home_path_regexp = nil;
+
+        
+        
+        if (basedir == null) basedir = nil;;
+        sep = $$('SEPARATOR');
+        sep_chars = $sep_chars();
+        if ($truthy(path[0] === '~' || (basedir && basedir[0] === '~'))) {
+          
+          home = $$('Dir').$home();
+          if (!$truthy(home)) {
+            $Kernel.$raise($$$('ArgumentError'), "couldn't find HOME environment -- expanding `~'")
+          };
+          leading_sep = windows_root_rx.test(home) ? '' : home.$sub($regexp(["^([", sep_chars, "]+).*$"]), "\\1");
+          if (!$truthy(home['$start_with?'](leading_sep))) {
+            $Kernel.$raise($$$('ArgumentError'), "non-absolute home")
+          };
+          home = $rb_plus(home, sep);
+          home_path_regexp = $regexp(["^\\~(?:", sep, "|$)"]);
+          path = path.$sub(home_path_regexp, home);
+          if ($truthy(basedir)) {
+            basedir = basedir.$sub(home_path_regexp, home)
+          };
+        };
+        return self.$absolute_path(path, basedir);
+      }, -2);
+      
+      // Coerce a given path to a path string using #to_path and #to_str
+      function $coerce_to_path(path) {
+        if ($truthy((path)['$respond_to?']("to_path"))) {
+          path = path.$to_path();
+        }
+
+        path = $Opal['$coerce_to!'](path, $$$('String'), "to_str");
+
+        return path;
+      }
+
+      // Return a RegExp compatible char class
+      function $sep_chars() {
+        if ($$('ALT_SEPARATOR') === nil) {
+          return Opal.escape_regexp($$('SEPARATOR'));
+        } else {
+          return Opal.escape_regexp($rb_plus($$('SEPARATOR'), $$('ALT_SEPARATOR')));
+        }
+      }
+    ;
+      
+      $def(self, '$dirname', function $$dirname(path, level) {
+        var self = this, sep_chars = nil;
+
+        
+        
+        if (level == null) level = 1;;
+        if ($eqeq(level, 0)) {
+          return path
+        };
+        if ($truthy($rb_lt(level, 0))) {
+          $Kernel.$raise($$$('ArgumentError'), "level can't be negative")
+        };
+        sep_chars = $sep_chars();
+        path = $coerce_to_path(path);
+        
+        var absolute = path.match(new RegExp("^[" + (sep_chars) + "]")), out;
+
+        path = path.replace(new RegExp("[" + (sep_chars) + "]+$"), ''); // remove trailing separators
+        path = path.replace(new RegExp("[^" + (sep_chars) + "]+$"), ''); // remove trailing basename
+        path = path.replace(new RegExp("[" + (sep_chars) + "]+$"), ''); // remove final trailing separators
+
+        if (path === '') {
+          out = absolute ? '/' : '.';
+        }
+        else {
+          out = path;
+        }
+
+        if (level == 1) {
+          return out;
+        }
+        else {
+          return self.$dirname(out, $rb_minus(level, 1))
+        }
+      ;
+      }, -2);
+      
+      $def(self, '$basename', function $$basename(name, suffix) {
+        var sep_chars = nil;
+
+        
+        
+        if (suffix == null) suffix = nil;;
+        sep_chars = $sep_chars();
+        name = $coerce_to_path(name);
+        
+        if (name.length == 0) {
+          return name;
+        }
+
+        if (suffix !== nil) {
+          suffix = $Opal['$coerce_to!'](suffix, $$$('String'), "to_str")
+        } else {
+          suffix = null;
+        }
+
+        name = name.replace(new RegExp("(.)[" + (sep_chars) + "]*$"), '$1');
+        name = name.replace(new RegExp("^(?:.*[" + (sep_chars) + "])?([^" + (sep_chars) + "]+)$"), '$1');
+
+        if (suffix === ".*") {
+          name = name.replace(/\.[^\.]+$/, '');
+        } else if(suffix !== null) {
+          suffix = Opal.escape_regexp(suffix);
+          name = name.replace(new RegExp("" + (suffix) + "$"), '');
+        }
+
+        return name;
+      ;
+      }, -2);
+      
+      $def(self, '$extname', function $$extname(path) {
+        var self = this, filename = nil, last_dot_idx = nil;
+
+        
+        path = $coerce_to_path(path);
+        filename = self.$basename(path);
+        if ($truthy(filename['$empty?']())) {
+          return ""
+        };
+        last_dot_idx = filename['$[]']($range(1, -1, false)).$rindex(".");
+        if (($truthy(last_dot_idx['$nil?']()) || ($eqeq($rb_plus(last_dot_idx, 1), $rb_minus(filename.$length(), 1))))) {
+          return ""
+        } else {
+          return filename['$[]'](Opal.Range.$new($rb_plus(last_dot_idx, 1), -1, false))
+        };
+      }, 1);
+      
+      $def(self, '$exist?', function $exist$ques$1(path) {
+        
+        return Opal.modules[path] != null
+      }, 1);
+      
+      $def(self, '$directory?', function $directory$ques$2(path) {
+        var files = nil, file = nil;
+
+        
+        files = [];
+        
+        for (var key in Opal.modules) {
+          files.push(key)
+        }
+      ;
+        path = path.$gsub($regexp(["(^.", $$('SEPARATOR'), "+|", $$('SEPARATOR'), "+$)"]));
+        file = $send(files, 'find', [], function $$3(f){
+          
+          
+          if (f == null) f = nil;;
+          return f['$=~']($regexp(["^", path]));}, 1);
+        return file;
+      }, 1);
+      
+      $def(self, '$join', function $$join($a) {
+        var $post_args, paths, result = nil;
+
+        
+        
+        $post_args = Opal.slice.call(arguments);
+        
+        paths = $post_args;;
+        if ($truthy(paths['$empty?']())) {
+          return ""
+        };
+        result = "";
+        paths = $send(paths.$flatten().$each_with_index(), 'map', [], function $$4(item, index){
+          
+          
+          if (item == null) item = nil;;
+          
+          if (index == null) index = nil;;
+          if (($eqeq(index, 0) && ($truthy(item['$empty?']())))) {
+            return $$('SEPARATOR')
+          } else if (($eqeq(paths.$length(), $rb_plus(index, 1)) && ($truthy(item['$empty?']())))) {
+            return $$('SEPARATOR')
+          } else {
+            return item
+          };}, 2);
+        paths = $send(paths, 'reject', [], "empty?".$to_proc());
+        $send(paths, 'each_with_index', [], function $$5(item, index){var next_item = nil;
+
+          
+          
+          if (item == null) item = nil;;
+          
+          if (index == null) index = nil;;
+          next_item = paths['$[]']($rb_plus(index, 1));
+          if ($truthy(next_item['$nil?']())) {
+            return (result = "" + (result) + (item))
+          } else {
+            
+            if (($truthy(item['$end_with?']($$('SEPARATOR'))) && ($truthy(next_item['$start_with?']($$('SEPARATOR')))))) {
+              item = item.$sub($regexp([$$('SEPARATOR'), "+$"]), "")
+            };
+            return (result = (($truthy(item['$end_with?']($$('SEPARATOR'))) || ($truthy(next_item['$start_with?']($$('SEPARATOR'))))) ? ("" + (result) + (item)) : ("" + (result) + (item) + ($$('SEPARATOR')))));
+          };}, 2);
+        return result;
+      }, -1);
+      
+      $def(self, '$split', function $$split(path) {
+        
+        return path.$split($$('SEPARATOR'))
+      }, 1);
+      $alias(self, "realpath", "expand_path");
+      return $alias(self, "exists?", "exist?");
+    })(Opal.get_singleton_class(self), $nesting);
+  })('::', $$$('IO'), $nesting)
+};
+
+Opal.modules["nodejs/file"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $truthy = Opal.truthy, $const_set = Opal.const_set, $defs = Opal.defs, $alias = Opal.alias, $send = Opal.send, $neqeq = Opal.neqeq, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def;
 
-  Opal.add_stubs(['$raise', '$warn', '$const_get', '$new', '$const_defined?', '$const_set', '$include', '$size', '$respond_to?', '$path', '$join', '$call', '$exist?', '$realpath', '$!=', '$close', '$to_path', '$pwd', '$to_str', '$include?', '$delete', '$match?', '$sub', '$attr_reader', '$to_a', '$each_line', '$to_enum', '$read', '$chomp']);
+  Opal.add_stubs('require,constants,raise,warn,const_get,new,error,size,respond_to?,path,join,call,start_with?,first,exist?,realpath,!=,close,to_path,pwd,to_str,include?,delete,match?,sub,attr_reader');
   
+  self.$require("corelib/file");
   
-  var warnings = {}, errno_code, errno_codes = [
-    'EACCES',
-    'EISDIR',
-    'EMFILE',
-    'ENOENT',
-    'EPERM'
-  ];
+  var warnings = {}, errno_codes = $$('Errno').$constants();
 
   function handle_unsupported_feature(message) {
     switch (Opal.config.unsupported_features_severity) {
     case 'error':
-      $$($nesting, 'Kernel').$raise($$($nesting, 'NotImplementedError'), message)
+      $$('Kernel').$raise($$('NotImplementedError'), message)
       break;
     case 'warning':
       warn(message)
@@ -135,32 +1846,23 @@ Opal.modules["nodejs/file"] = function(Opal) {
       return action();
     } catch (error) {
       if (errno_codes.indexOf(error.code) >= 0) {
-        var error_class = $$($nesting, 'Errno').$const_get(error.code)
-        throw (error_class).$new(error.message);
+        var error_class = $$('Errno').$const_get(error.code)
+        $$('Kernel').$raise((error_class).$new(error.message))
       }
-      throw error;
-    }
-  }
-
-  for(var i = 0, ii = errno_codes.length; i < ii; i++) {
-    errno_code = errno_codes[i];
-    if (!$$($nesting, 'Errno')['$const_defined?'](errno_code)) {
-      $$($nesting, 'Errno').$const_set(errno_code, $$($nesting, 'Class').$new($$($nesting, 'SystemCallError')))
+      $$('Kernel').$raise(self.$error())
     }
   }
 ;
   (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'File');
 
-    var $nesting = [self].concat($parent_nesting), $File_read$1, $File_write$2, $File_exist$ques$3, $File_realpath$4, $File_join$5, $File_directory$ques$6, $File_file$ques$7, $File_readable$ques$8, $File_size$9, $File_open$10, $File_stat$11, $File_mtime$12, $File_symlink$ques$13, $File_absolute_path$14, $File_initialize$15, $File_read$16, $File_readlines$17, $File_each_line$18, $File_write$19, $File_flush$20, $File_close$21, $File_mtime$22;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
     if (self.__fs__ == null) self.__fs__ = nil;
     if (self.__path__ == null) self.__path__ = nil;
     if (self.__util__ == null) self.__util__ = nil;
 
-    self.$$prototype.eof = self.$$prototype.binary_flag = self.$$prototype.path = self.$$prototype.fd = nil;
+    $proto.eof = $proto.binary_flag = $proto.path = $proto.fd = nil;
     
-    self.$include($$$($$$('::', 'IO'), 'Writable'));
-    self.$include($$$($$$('::', 'IO'), 'Readable'));
     self.__fs__ = require('fs');
     self.__path__ = require('path');
     self.__util__ = require('util');
@@ -171,45 +1873,48 @@ Opal.modules["nodejs/file"] = function(Opal) {
     var __TextDecoder__ = typeof TextDecoder !== 'undefined' ? TextDecoder : __util__.TextDecoder;
     var __utf8TextDecoder__ = new __TextDecoder__('utf8');
     var __textEncoder__ = new __TextEncoder__();
-    if ($truthy(__path__.sep !== $$($nesting, 'Separator'))) {
-      Opal.const_set($nesting[0], 'ALT_SEPARATOR', __path__.sep)};
-    Opal.defs(self, '$read', $File_read$1 = function $$read(path) {
-      var self = this;
-
+    if ($truthy(__path__.sep !== $$('Separator'))) {
+      $const_set($nesting[0], 'ALT_SEPARATOR', __path__.sep)
+    };
+    $defs(self, '$read', function $$read(path) {
+      
       return executeIOAction(function(){return __fs__.readFileSync(path).toString()})
-    }, $File_read$1.$$arity = 1);
-    Opal.defs(self, '$write', $File_write$2 = function $$write(path, data) {
-      var self = this;
-
+    }, 1);
+    $defs(self, '$write', function $$write(path, data) {
+      
       
       executeIOAction(function(){return __fs__.writeFileSync(path, data)});
       return data.$size();
-    }, $File_write$2.$$arity = 2);
-    Opal.defs(self, '$exist?', $File_exist$ques$3 = function(path) {
-      var self = this;
-
+    }, 2);
+    $defs(self, '$delete', function $File_delete$1(path) {
+      
+      return executeIOAction(function(){return __fs__.unlinkSync(path)})
+    }, 1);
+    (function(self, $parent_nesting) {
+      
+      return $alias(self, "unlink", "delete")
+    })(Opal.get_singleton_class(self), $nesting);
+    $defs(self, '$exist?', function $File_exist$ques$2(path) {
+      
       
       if ($truthy(path['$respond_to?']("path"))) {
-        path = path.$path()};
+        path = path.$path()
+      };
       return executeIOAction(function(){return __fs__.existsSync(path)});
-    }, $File_exist$ques$3.$$arity = 1);
-    Opal.defs(self, '$realpath', $File_realpath$4 = function $$realpath(pathname, dir_string, cache) {
-      var $iter = $File_realpath$4.$$p, block = $iter || nil, self = this;
+    }, 1);
+    $defs(self, '$realpath', function $$realpath(pathname, dir_string, cache) {
+      var block = $$realpath.$$p || nil, self = this;
 
-      if ($iter) $File_realpath$4.$$p = null;
+      delete $$realpath.$$p;
       
+      ;
       
-      if ($iter) $File_realpath$4.$$p = null;;
-      
-      if (dir_string == null) {
-        dir_string = nil;
-      };
+      if (dir_string == null) dir_string = nil;;
       
-      if (cache == null) {
-        cache = nil;
-      };
+      if (cache == null) cache = nil;;
       if ($truthy(dir_string)) {
-        pathname = self.$join(dir_string, pathname)};
+        pathname = self.$join(dir_string, pathname)
+      };
       if ((block !== nil)) {
         
         __fs__.realpath(pathname, cache, function(error, realpath){
@@ -220,77 +1925,72 @@ Opal.modules["nodejs/file"] = function(Opal) {
       } else {
         return executeIOAction(function(){return __fs__.realpathSync(pathname, cache)})
       };
-    }, $File_realpath$4.$$arity = -2);
-    Opal.defs(self, '$join', $File_join$5 = function $$join($a) {
-      var $post_args, paths, self = this;
+    }, -2);
+    $defs(self, '$join', function $$join($a) {
+      var $post_args, paths, $b, prefix = nil;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       paths = $post_args;;
-      return __path__.posix.join.apply(__path__, paths);
-    }, $File_join$5.$$arity = -1);
-    Opal.defs(self, '$directory?', $File_directory$ques$6 = function(path) {
+      prefix = ($truthy(($b = paths.$first(), ($b === nil || $b == null) ? nil : $send($b, 'start_with?', ["//"]))) ? ("/") : (""));
+      return prefix + __path__.posix.join.apply(__path__, paths);
+    }, -1);
+    $defs(self, '$directory?', function $File_directory$ques$3(path) {
       var self = this, result = nil, realpath = nil;
 
       
-      if ($truthy(self['$exist?'](path))) {
-      } else {
+      if (!$truthy(self['$exist?'](path))) {
         return false
       };
       result = executeIOAction(function(){return !!__fs__.lstatSync(path).isDirectory()});
-      if ($truthy(result)) {
-      } else {
+      if (!$truthy(result)) {
         
         realpath = self.$realpath(path);
-        if ($truthy(realpath['$!='](path))) {
-          result = executeIOAction(function(){return !!__fs__.lstatSync(realpath).isDirectory()})};
+        if ($neqeq(realpath, path)) {
+          result = executeIOAction(function(){return !!__fs__.lstatSync(realpath).isDirectory()})
+        };
       };
       return result;
-    }, $File_directory$ques$6.$$arity = 1);
-    Opal.defs(self, '$file?', $File_file$ques$7 = function(path) {
+    }, 1);
+    $defs(self, '$file?', function $File_file$ques$4(path) {
       var self = this, result = nil, realpath = nil;
 
       
-      if ($truthy(self['$exist?'](path))) {
-      } else {
+      if (!$truthy(self['$exist?'](path))) {
         return false
       };
       result = executeIOAction(function(){return !!__fs__.lstatSync(path).isFile()});
-      if ($truthy(result)) {
-      } else {
+      if (!$truthy(result)) {
         
         realpath = self.$realpath(path);
-        if ($truthy(realpath['$!='](path))) {
-          result = executeIOAction(function(){return !!__fs__.lstatSync(realpath).isFile()})};
+        if ($neqeq(realpath, path)) {
+          result = executeIOAction(function(){return !!__fs__.lstatSync(realpath).isFile()})
+        };
       };
       return result;
-    }, $File_file$ques$7.$$arity = 1);
-    Opal.defs(self, '$readable?', $File_readable$ques$8 = function(path) {
+    }, 1);
+    $defs(self, '$readable?', function $File_readable$ques$5(path) {
       var self = this;
 
       
-      if ($truthy(self['$exist?'](path))) {
-      } else {
+      if (!$truthy(self['$exist?'](path))) {
         return false
       };
-      return "" + "\n" + "        try {\n" + "          __fs__.accessSync(path, __fs__.R_OK);\n" + "          return true;\n" + "        } catch (error) {\n" + "          return false;\n" + "        }\n" + "      ";
-    }, $File_readable$ques$8.$$arity = 1);
-    Opal.defs(self, '$size', $File_size$9 = function $$size(path) {
-      var self = this;
-
+      return "\n" + "        try {\n" + "          __fs__.accessSync(path, __fs__.R_OK);\n" + "          return true;\n" + "        } catch (error) {\n" + "          return false;\n" + "        }\n" + "      ";
+    }, 1);
+    $defs(self, '$size', function $$size(path) {
+      
       return executeIOAction(function(){return __fs__.lstatSync(path).size});
-    }, $File_size$9.$$arity = 1);
-    Opal.defs(self, '$open', $File_open$10 = function $$open(path, mode) {
-      var $iter = $File_open$10.$$p, $yield = $iter || nil, self = this, file = nil;
+    }, 1);
+    $defs(self, '$open', function $$open(path, mode) {
+      var $yield = $$open.$$p || nil, self = this, file = nil;
 
-      if ($iter) $File_open$10.$$p = null;
+      delete $$open.$$p;
       
       
-      if (mode == null) {
-        mode = "r";
-      };
+      if (mode == null) mode = "r";;
       file = self.$new(path, mode);
       if (($yield !== nil)) {
         
@@ -302,72 +2002,60 @@ Opal.modules["nodejs/file"] = function(Opal) {
       } else {
         return file
       };
-    }, $File_open$10.$$arity = -2);
-    Opal.defs(self, '$stat', $File_stat$11 = function $$stat(path) {
-      var self = this;
-
+    }, -2);
+    $defs(self, '$stat', function $$stat(path) {
+      
       
       if ($truthy(path['$respond_to?']("path"))) {
-        path = path.$path()};
-      return $$$($$($nesting, 'File'), 'Stat').$new(path);
-    }, $File_stat$11.$$arity = 1);
-    Opal.defs(self, '$mtime', $File_mtime$12 = function $$mtime(path) {
-      var self = this;
-
+        path = path.$path()
+      };
+      return $$$($$('File'), 'Stat').$new(path);
+    }, 1);
+    $defs(self, '$mtime', function $$mtime(path) {
+      
       return executeIOAction(function(){return __fs__.statSync(path).mtime})
-    }, $File_mtime$12.$$arity = 1);
-    Opal.defs(self, '$symlink?', $File_symlink$ques$13 = function(path) {
-      var self = this;
-
+    }, 1);
+    $defs(self, '$symlink?', function $File_symlink$ques$6(path) {
+      
       return executeIOAction(function(){return __fs__.lstatSync(path).isSymbolicLink()})
-    }, $File_symlink$ques$13.$$arity = 1);
-    Opal.defs(self, '$absolute_path', $File_absolute_path$14 = function $$absolute_path(path, basedir) {
-      var self = this, $ret_or_1 = nil;
+    }, 1);
+    $defs(self, '$absolute_path', function $$absolute_path(path, basedir) {
+      var $ret_or_1 = nil;
 
       
       
-      if (basedir == null) {
-        basedir = nil;
-      };
-      path = (function() {if ($truthy(path['$respond_to?']("to_path"))) {
-        return path.$to_path()
-      } else {
-        return path
-      }; return nil; })();
-      basedir = (function() {if ($truthy(($ret_or_1 = basedir))) {
-        return $ret_or_1
-      } else {
-        return $$($nesting, 'Dir').$pwd()
-      }; return nil; })();
+      if (basedir == null) basedir = nil;;
+      path = ($truthy(path['$respond_to?']("to_path")) ? (path.$to_path()) : (path));
+      basedir = ($truthy(($ret_or_1 = basedir)) ? ($ret_or_1) : ($$('Dir').$pwd()));
       return __path__.normalize(__path__.resolve(basedir.$to_str(), path.$to_str())).split(__path__.sep).join(__path__.posix.sep);
-    }, $File_absolute_path$14.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$initialize', $File_initialize$15 = function $$initialize(path, flags) {
-      var self = this, encoding_option_rx = nil;
+    $def(self, '$initialize', function $$initialize(path, flags) {
+      var $yield = $$initialize.$$p || nil, self = this, encoding_option_rx = nil, fd = nil;
 
+      delete $$initialize.$$p;
       
       
-      if (flags == null) {
-        flags = "r";
-      };
+      if (flags == null) flags = "r";;
       self.binary_flag = flags['$include?']("b");
       flags = flags.$delete("b");
       encoding_option_rx = /:(.*)/;
       if ($truthy(encoding_option_rx['$match?'](flags))) {
         
         handle_unsupported_feature("Encoding option (:encoding) is unsupported by Node.js openSync method and will be removed.");
-        flags = flags.$sub(encoding_option_rx, "");};
+        flags = flags.$sub(encoding_option_rx, "");
+      };
       self.path = path;
-      self.flags = flags;
-      return (self.fd = executeIOAction(function(){return __fs__.openSync(path, flags)}));
-    }, $File_initialize$15.$$arity = -2);
+      fd = executeIOAction(function(){return __fs__.openSync(path, flags)});
+      return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [fd, flags], null);
+    }, -2);
     self.$attr_reader("path");
     
-    Opal.def(self, '$read', $File_read$16 = function $$read() {
+    $def(self, '$sysread', function $$sysread(bytes) {
       var self = this, res = nil;
 
       if ($truthy(self.eof)) {
-        return ""
+        return self.$raise($$('EOFError'), "end of file reached")
       } else {
         
         if ($truthy(self.binary_flag)) {
@@ -390,122 +2078,92 @@ Opal.modules["nodejs/file"] = function(Opal) {
         self.lineno = res.$size();
         return res;
       }
-    }, $File_read$16.$$arity = 0);
+    }, 1);
     
-    Opal.def(self, '$readlines', $File_readlines$17 = function $$readlines(separator) {
+    $def(self, '$write', function $$write(string) {
       var self = this;
-      if ($gvars["/"] == null) $gvars["/"] = nil;
 
-      
-      
-      if (separator == null) {
-        separator = $gvars["/"];
-      };
-      return self.$each_line(separator).$to_a();
-    }, $File_readlines$17.$$arity = -1);
+      return executeIOAction(function(){return __fs__.writeSync(self.fd, string)})
+    }, 1);
     
-    Opal.def(self, '$each_line', $File_each_line$18 = function $$each_line(separator) {
-      var $iter = $File_each_line$18.$$p, block = $iter || nil, self = this, lines = nil;
-      if ($gvars["/"] == null) $gvars["/"] = nil;
+    $def(self, '$flush', function $$flush() {
+      var self = this;
 
-      if ($iter) $File_each_line$18.$$p = null;
-      
-      
-      if ($iter) $File_each_line$18.$$p = null;;
+      return executeIOAction(function(){return __fs__.fsyncSync(self.fd)})
+    }, 0);
+    
+    $def(self, '$close', function $$close() {
+      var $yield = $$close.$$p || nil, self = this;
+
+      delete $$close.$$p;
       
-      if (separator == null) {
-        separator = $gvars["/"];
-      };
-      if ($truthy(self.eof)) {
-        return (function() {if ((block !== nil)) {
-          return self
-        } else {
-          return [].$to_enum()
-        }; return nil; })()};
-      if ((block !== nil)) {
-        
-        lines = $$($nesting, 'File').$read(self.path);
-        
-        self.eof = false;
-        self.lineno = 0;
-        var chomped  = lines.$chomp(),
-            trailing = lines.length != chomped.length,
-            splitted = chomped.split(separator);
-        for (var i = 0, length = splitted.length; i < length; i++) {
-          self.lineno += 1;
-          if (i < length - 1 || trailing) {
-            Opal.yield1(block, splitted[i] + separator);
-          }
-          else {
-            Opal.yield1(block, splitted[i]);
-          }
-        }
-        self.eof = true;
-      ;
-        return self;
-      } else {
-        return self.$read().$each_line(separator)
-      };
-    }, $File_each_line$18.$$arity = -1);
+      executeIOAction(function(){return __fs__.closeSync(self.fd)});
+      return $send2(self, $find_super(self, 'close', $$close, false, true), 'close', [], $yield);
+    }, 0);
+    return $def(self, '$mtime', function $$mtime() {
+      var self = this;
+
+      return executeIOAction(function(){return __fs__.statSync(self.path).mtime})
+    }, 0);
+  })($nesting[0], $$('IO'), $nesting);
+  return (function($base, $super) {
+    var self = $klass($base, $super, 'Stat');
+
+    var $proto = self.$$prototype;
+    if (self.__fs__ == null) self.__fs__ = nil;
+
+    $proto.path = nil;
     
-    Opal.def(self, '$write', $File_write$19 = function $$write(string) {
+    self.__fs__ = require('fs');
+    var __fs__ = self.__fs__;
+    
+    $def(self, '$initialize', function $$initialize(path) {
       var self = this;
 
-      return executeIOAction(function(){return __fs__.writeSync(self.fd, string)})
-    }, $File_write$19.$$arity = 1);
+      return (self.path = path)
+    }, 1);
     
-    Opal.def(self, '$flush', $File_flush$20 = function $$flush() {
+    $def(self, '$file?', function $Stat_file$ques$7() {
       var self = this;
 
-      return executeIOAction(function(){return __fs__.fsyncSync(self.fd)})
-    }, $File_flush$20.$$arity = 0);
+      return executeIOAction(function(){return __fs__.statSync(self.path).isFile()})
+    }, 0);
     
-    Opal.def(self, '$close', $File_close$21 = function $$close() {
+    $def(self, '$directory?', function $Stat_directory$ques$8() {
       var self = this;
 
-      return executeIOAction(function(){return __fs__.closeSync(self.fd)})
-    }, $File_close$21.$$arity = 0);
-    return (Opal.def(self, '$mtime', $File_mtime$22 = function $$mtime() {
+      return executeIOAction(function(){return __fs__.statSync(self.path).isDirectory()})
+    }, 0);
+    
+    $def(self, '$mtime', function $$mtime() {
       var self = this;
 
       return executeIOAction(function(){return __fs__.statSync(self.path).mtime})
-    }, $File_mtime$22.$$arity = 0), nil) && 'mtime';
-  })($nesting[0], $$($nesting, 'IO'), $nesting);
-  return (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'Stat');
-
-    var $nesting = [self].concat($parent_nesting), $Stat_initialize$23, $Stat_file$ques$24, $Stat_mtime$25;
-    if (self.__fs__ == null) self.__fs__ = nil;
-
-    self.$$prototype.path = nil;
-    
-    self.__fs__ = require('fs');
-    var __fs__ = self.__fs__;
+    }, 0);
     
-    Opal.def(self, '$initialize', $Stat_initialize$23 = function $$initialize(path) {
+    $def(self, '$readable?', function $Stat_readable$ques$9() {
       var self = this;
 
-      return (self.path = path)
-    }, $Stat_initialize$23.$$arity = 1);
+      return executeIOAction(function(){return __fs__.accessSync(self.path, __fs__.constants.R_OK)})
+    }, 0);
     
-    Opal.def(self, '$file?', $Stat_file$ques$24 = function() {
+    $def(self, '$writable?', function $Stat_writable$ques$10() {
       var self = this;
 
-      return executeIOAction(function(){return __fs__.statSync(self.path).isFile()})
-    }, $Stat_file$ques$24.$$arity = 0);
-    return (Opal.def(self, '$mtime', $Stat_mtime$25 = function $$mtime() {
+      return executeIOAction(function(){return __fs__.accessSync(self.path, __fs__.constants.W_OK)})
+    }, 0);
+    return $def(self, '$executable?', function $Stat_executable$ques$11() {
       var self = this;
 
-      return executeIOAction(function(){return __fs__.statSync(self.path).mtime})
-    }, $Stat_mtime$25.$$arity = 0), nil) && 'mtime';
-  })($$($nesting, 'File'), null, $nesting);
+      return executeIOAction(function(){return __fs__.accessSync(self.path, __fs__.constants.X_OK)})
+    }, 0);
+  })($$('File'), null);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["nodejs/dir"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send, $alias = Opal.alias;
+Opal.modules["nodejs/dir"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $klass = Opal.klass, $def = Opal.def, $truthy = Opal.truthy, $send = Opal.send, $Opal = Opal.Opal, $alias = Opal.alias;
 
-  Opal.add_stubs(['$respond_to?', '$flat_map', '$to_path', '$coerce_to!']);
+  Opal.add_stubs('respond_to?,flat_map,to_path,coerce_to!');
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Dir');
 
@@ -525,43 +2183,37 @@ Opal.modules["nodejs/dir"] = function(Opal) {
     var __path__ = self.__path__;
     var __os__ = self.__os__;
     return (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting), $$$1, $pwd$2, $home$3, $chdir$4, $mkdir$5, $entries$6, $glob$7;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
       
-      Opal.def(self, '$[]', $$$1 = function(glob) {
-        var self = this;
-
+      $def(self, '$[]', function $$$1(glob) {
+        
         return __glob__.sync(glob)
-      }, $$$1.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$pwd', $pwd$2 = function $$pwd() {
-        var self = this;
-
+      $def(self, '$pwd', function $$pwd() {
+        
         return process.cwd().split(__path__.sep).join(__path__.posix.sep);
-      }, $pwd$2.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$home', $home$3 = function $$home() {
-        var self = this;
-
+      $def(self, '$home', function $$home() {
+        
         return __os__.homedir();
-      }, $home$3.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$chdir', $chdir$4 = function $$chdir(path) {
-        var self = this;
-
+      $def(self, '$chdir', function $$chdir(path) {
+        
         return process.chdir(path)
-      }, $chdir$4.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$mkdir', $mkdir$5 = function $$mkdir(path) {
-        var self = this;
-
+      $def(self, '$mkdir', function $$mkdir(path) {
+        
         return __fs__.mkdirSync(path)
-      }, $mkdir$5.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$entries', $entries$6 = function $$entries(dirname) {
-        var self = this;
-
+      $def(self, '$entries', function $$entries(dirname) {
+        
         
         var result = [];
         var entries = __fs__.readdirSync(dirname);
@@ -570,42 +2222,35 @@ Opal.modules["nodejs/dir"] = function(Opal) {
         }
         return result;
       
-      }, $entries$6.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$glob', $glob$7 = function $$glob(pattern) {
-        var $$8, self = this;
-
+      $def(self, '$glob', function $$glob(pattern) {
         
-        if ($truthy(pattern['$respond_to?']("each"))) {
-        } else {
+        
+        if (!$truthy(pattern['$respond_to?']("each"))) {
           pattern = [pattern]
         };
-        return $send(pattern, 'flat_map', [], ($$8 = function(subpattern){var self = $$8.$$s == null ? this : $$8.$$s;
-
+        return $send(pattern, 'flat_map', [], function $$2(subpattern){
           
           
-          if (subpattern == null) {
-            subpattern = nil;
-          };
+          if (subpattern == null) subpattern = nil;;
           if ($truthy(subpattern['$respond_to?']("to_path"))) {
-            subpattern = subpattern.$to_path()};
-          subpattern = $$($nesting, 'Opal')['$coerce_to!'](subpattern, $$($nesting, 'String'), "to_str");
-          return __glob__.sync(subpattern);;}, $$8.$$s = self, $$8.$$arity = 1, $$8));
-      }, $glob$7.$$arity = 1);
+            subpattern = subpattern.$to_path()
+          };
+          subpattern = $Opal['$coerce_to!'](subpattern, $$('String'), "to_str");
+          return __glob__.sync(subpattern);;}, 1);
+      }, 1);
       return $alias(self, "getwd", "pwd");
     })(Opal.get_singleton_class(self), $nesting);
   })($nesting[0], null, $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["nodejs/io"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var $$5, $$6, self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $lambda = Opal.lambda, $send = Opal.send, $writer = nil;
+Opal.modules["nodejs/io"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $klass = Opal.klass, $alias = Opal.alias, $def = Opal.def, $defs = Opal.defs;
 
-  Opal.add_stubs(['$attr_reader', '$write', '$read', '$write_proc=', '$-', '$tty=']);
+  Opal.add_stubs('require,attr_reader,initialize_before_node_io,write,read');
   
+  self.$require("nodejs/file");
   
   function executeIOAction(action) {
     try {
@@ -622,89 +2267,256 @@ Opal.modules["nodejs/io"] = function(Opal) {
     }
   }
 ;
-  (function($base, $super, $parent_nesting) {
+  var __fs__ = require('fs');
+  return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'IO');
 
-    var $nesting = [self].concat($parent_nesting), $IO_initialize$1, $IO_write$2, $IO_read$3, $IO_binread$4;
-    if (self.__fs__ == null) self.__fs__ = nil;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
-    self.__fs__ = require('fs');
-    var __fs__ = self.__fs__;
-    self.$attr_reader("eof");
+    self.__fs__ = __fs__;
     self.$attr_reader("lineno");
+    $alias(self, "initialize_before_node_io", "initialize");
     
-    Opal.def(self, '$initialize', $IO_initialize$1 = function $$initialize() {
+    $def(self, '$initialize', function $$initialize(fd, flags) {
       var self = this;
 
       
-      self.eof = false;
-      return (self.lineno = 0);
-    }, $IO_initialize$1.$$arity = 0);
-    Opal.defs(self, '$write', $IO_write$2 = function $$write(path, data) {
-      var self = this;
+      
+      if (flags == null) flags = "r";;
+      self.lineno = 0;
+      return self.$initialize_before_node_io(fd, flags);
+    }, -2);
+    $defs(self, '$write', function $$write(path, data) {
+      
+      return $$('File').$write(path, data)
+    }, 2);
+    $defs(self, '$read', function $$read(path) {
+      
+      return $$('File').$read(path)
+    }, 1);
+    return $defs(self, '$binread', function $$binread(path) {
+      
+      return executeIOAction(function(){return __fs__.readFileSync(path).toString('binary')})
+    }, 1);
+  })($nesting[0], null, $nesting);
+};
+
+Opal.modules["nodejs/argf"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $const_set = Opal.const_set, $def = Opal.def, $eqeq = Opal.eqeq, $gvars = Opal.gvars, $truthy = Opal.truthy, $send = Opal.send, $to_a = Opal.to_a, $rb_plus = Opal.rb_plus, $rb_minus = Opal.rb_minus, $rb_gt = Opal.rb_gt, $not = Opal.not, $alias = Opal.alias, $writer = nil;
+
+  Opal.add_stubs('new,include,filename,==,open,argv,shift,close,file,closed?,enum_for,gets,nil?,+,loop,read,-,length,>,to_a,each,attr_accessor,rewind,!,fileno,eof?,lineno=');
+  
+  $const_set($nesting[0], 'ARGF', $$('Object').$new());
+  (function(self, $parent_nesting) {
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+    
+    self.$include($$('Enumerable'));
+    
+    $def(self, '$inspect', function $$inspect() {
+      
+      return "ARGF"
+    }, 0);
+    
+    $def(self, '$argv', function $$argv() {
+      
+      return $$('ARGV')
+    }, 0);
+    
+    $def(self, '$file', function $$file() {
+      var self = this, fn = nil, $ret_or_1 = nil;
+      if (self.file == null) self.file = nil;
+      if ($gvars.stdin == null) $gvars.stdin = nil;
+
+      
+      fn = self.$filename();
+      if ($eqeq(fn, "-")) {
+        return $gvars.stdin
+      } else {
+        return (self.file = ($truthy(($ret_or_1 = self.file)) ? ($ret_or_1) : ($$('File').$open(fn, "r"))))
+      };
+    }, 0);
+    
+    $def(self, '$filename', function $$filename() {
+      var self = this, $ret_or_1 = nil;
+      if (self.filename == null) self.filename = nil;
+      if (self.last_filename == null) self.last_filename = nil;
 
-      return $$($nesting, 'File').$write(path, data)
-    }, $IO_write$2.$$arity = 2);
-    Opal.defs(self, '$read', $IO_read$3 = function $$read(path) {
+      
+      if ($truthy(self.filename)) {
+        return self.filename
+      };
+      if ($eqeq(self.$argv(), ["-"])) {
+        return "-"
+      } else if ($eqeq(self.$argv(), [])) {
+        if ($truthy(($ret_or_1 = self.last_filename))) {
+          return $ret_or_1
+        } else {
+          return "-"
+        }
+      } else {
+        
+        self.file = nil;
+        return (self.filename = (self.last_filename = self.$argv().$shift()));
+      };
+    }, 0);
+    
+    $def(self, '$close', function $$close() {
       var self = this;
 
-      return $$($nesting, 'File').$read(path)
-    }, $IO_read$3.$$arity = 1);
-    return (Opal.defs(self, '$binread', $IO_binread$4 = function $$binread(path) {
+      
+      self.$file().$close();
+      self.filename = nil;
+      return self;
+    }, 0);
+    
+    $def(self, '$closed?', function $closed$ques$1() {
       var self = this;
 
-      return executeIOAction(function(){return __fs__.readFileSync(path).toString('binary')})
-    }, $IO_binread$4.$$arity = 1), nil) && 'binread';
-  })($nesting[0], null, $nesting);
-  
-  $writer = [$lambda(($$5 = function(string){var self = $$5.$$s == null ? this : $$5.$$s;
+      return self.$file()['$closed?']()
+    }, 0);
+    
+    $def(self, '$each', function $$each($a) {
+      var block = $$each.$$p || nil, $post_args, args, $b, self = this, l = nil;
+
+      delete $$each.$$p;
+      
+      ;
+      
+      $post_args = Opal.slice.call(arguments);
+      
+      args = $post_args;;
+      if (!(block !== nil)) {
+        return self.$enum_for("each")
+      };
+      while ($truthy((l = $send(self, 'gets', $to_a(args))))) {
+        Opal.yield1(block, l)
+      };
+    }, -1);
+    
+    $def(self, '$gets', function $$gets($a) {
+      var $post_args, args, self = this, s = nil;
+      if (self.lineno == null) self.lineno = nil;
 
+      
+      
+      $post_args = Opal.slice.call(arguments);
+      
+      args = $post_args;;
+      s = $send(self.$file(), 'gets', $to_a(args));
+      if ($truthy(s['$nil?']())) {
+        
+        self.$close();
+        s = $send(self.$file(), 'gets', $to_a(args));
+      };
+      if ($truthy(s)) {
+        self.lineno = $rb_plus(self.lineno, 1)
+      };
+      return s;
+    }, -1);
     
+    $def(self, '$read', function $$read(len) {
+      var self = this, buf = nil;
+
+      
+      
+      if (len == null) len = nil;;
+      buf = "";
+      return (function(){var $brk = Opal.new_brk(); try {return $send(self, 'loop', [], function $$2(){var self = $$2.$$s == null ? this : $$2.$$s, r = nil;
+        if (self.filename == null) self.filename = nil;
+
+        
+        r = self.$file().$read(len);
+        if ($truthy(r)) {
+          
+          buf = $rb_plus(buf, r);
+          len = $rb_minus(len, r.$length());
+        };
+        self.$file().$close();
+        if ((($truthy(len) && ($truthy($rb_gt(len, 0)))) && ($truthy(self.filename)))) {
+          
+          Opal.brk(nil, $brk)
+        } else {
+          return nil
+        };}, {$$arity: 0, $$s: self, $$brk: $brk})
+      } catch (err) { if (err === $brk) { return err.$v } else { throw err } }})();
+    }, -1);
     
-    if (string == null) {
-      string = nil;
-    };
-    return process.stdout.write(string);;}, $$5.$$s = self, $$5.$$arity = 1, $$5))];
-  $send($$($nesting, 'STDOUT'), 'write_proc=', Opal.to_a($writer));
-  $writer[$rb_minus($writer["length"], 1)];;
-  
-  $writer = [$lambda(($$6 = function(string){var self = $$6.$$s == null ? this : $$6.$$s;
+    $def(self, '$readlines', function $$readlines($a) {
+      var $post_args, args, self = this;
 
+      
+      
+      $post_args = Opal.slice.call(arguments);
+      
+      args = $post_args;;
+      return $send(self, 'each', $to_a(args)).$to_a();
+    }, -1);
+    self.$attr_accessor("lineno");
     
+    $def(self, '$rewind', function $$rewind() {
+      var self = this, f = nil;
+
+      
+      self.lineno = 1;
+      f = self.$file();
+      
+      try {
+        f.$rewind()
+      } catch ($err) {
+        if (Opal.rescue($err, [$$('StandardError')])) {
+          try {
+            nil
+          } finally { Opal.pop_exception(); }
+        } else { throw $err; }
+      };;
+      return 0;
+    }, 0);
     
-    if (string == null) {
-      string = nil;
-    };
-    return process.stderr.write(string);;}, $$6.$$s = self, $$6.$$arity = 1, $$6))];
-  $send($$($nesting, 'STDERR'), 'write_proc=', Opal.to_a($writer));
-  $writer[$rb_minus($writer["length"], 1)];;
-  
-  $writer = [true];
-  $send($$($nesting, 'STDOUT'), 'tty=', Opal.to_a($writer));
-  $writer[$rb_minus($writer["length"], 1)];;
+    $def(self, '$fileno', function $$fileno() {
+      var self = this;
+      if (self.last_filename == null) self.last_filename = nil;
+      if (self.filename == null) self.filename = nil;
+
+      
+      if (($not(self.filename) && ($truthy(self.last_filename)))) {
+        return 0
+      };
+      return self.$file().$fileno();
+    }, 0);
+    
+    $def(self, '$eof?', function $eof$ques$3() {
+      var self = this;
+
+      return self.$file()['$eof?']()
+    }, 0);
+    $alias(self, "each_line", "each");
+    $alias(self, "eof", "eof?");
+    $alias(self, "path", "filename");
+    $alias(self, "skip", "close");
+    $alias(self, "to_i", "fileno");
+    return $alias(self, "to_io", "file");
+  })(Opal.get_singleton_class($$('ARGF')), $nesting);
   
-  $writer = [true];
-  $send($$($nesting, 'STDERR'), 'tty=', Opal.to_a($writer));
+  $writer = [1];
+  $send($$('ARGF'), 'lineno=', $to_a($writer));
   return $writer[$rb_minus($writer["length"], 1)];;
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["nodejs/open-uri"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module;
+Opal.modules["nodejs/open-uri"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $defs = Opal.defs;
 
-  return (function($base, $parent_nesting) {
+  return (function($base) {
     var self = $module($base, 'OpenURI');
 
-    var $nesting = [self].concat($parent_nesting), $OpenURI_request$1, $OpenURI_data$2;
-    if (self.__xmlhttprequest__ == null) self.__xmlhttprequest__ = nil;
+        if (self.__xmlhttprequest__ == null) self.__xmlhttprequest__ = nil;
 
     
     self.__xmlhttprequest__ = require('unxhr');
     var __XMLHttpRequest__ = self.__xmlhttprequest__.XMLHttpRequest;
-    Opal.defs(self, '$request', $OpenURI_request$1 = function $$request(uri) {
-      var self = this;
-
+    $defs(self, '$request', function $$request(uri) {
+      
       
       var xhr = new __XMLHttpRequest__();
       xhr.open('GET', uri, false);
@@ -712,10 +2524,9 @@ Opal.modules["nodejs/open-uri"] = function(Opal) {
       xhr.send();
       return xhr;
     
-    }, $OpenURI_request$1.$$arity = 1);
-    return (Opal.defs(self, '$data', $OpenURI_data$2 = function $$data(req) {
-      var self = this;
-
+    }, 1);
+    return $defs(self, '$data', function $$data(req) {
+      
       
       var arrayBuffer = req.response;
       var byteArray = new Uint8Array(arrayBuffer);
@@ -725,25 +2536,18 @@ Opal.modules["nodejs/open-uri"] = function(Opal) {
       }
       return result;
     
-    }, $OpenURI_data$2.$$arity = 1), nil) && 'data';
-  })($nesting[0], $nesting)
+    }, 1);
+  })($nesting[0])
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/comparable"] = function(Opal) {
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $falsy = Opal.falsy, $module = Opal.module, $truthy = Opal.truthy;
+Opal.modules["corelib/comparable"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var nil = Opal.nil, $$$ = Opal.$$$, $truthy = Opal.truthy, $module = Opal.module, $rb_gt = Opal.rb_gt, $rb_lt = Opal.rb_lt, $eqeqeq = Opal.eqeqeq, $Kernel = Opal.Kernel, $def = Opal.def;
 
-  Opal.add_stubs(['$>', '$<', '$===', '$raise', '$class', '$<=>', '$equal?']);
-  return (function($base, $parent_nesting) {
+  Opal.add_stubs('>,<,===,raise,class,<=>,equal?');
+  return (function($base) {
     var self = $module($base, 'Comparable');
 
-    var $nesting = [self].concat($parent_nesting), $Comparable_$eq_eq$1, $Comparable_$gt$2, $Comparable_$gt_eq$3, $Comparable_$lt$4, $Comparable_$lt_eq$5, $Comparable_between$ques$6, $Comparable_clamp$7, $case = nil;
+    var $ret_or_1 = nil;
 
     
     
@@ -757,25 +2561,24 @@ Opal.modules["corelib/comparable"] = function(Opal) {
 
     function fail_comparison(lhs, rhs) {
       var class_name;
-      (function() {$case = rhs;
-    if (nil['$===']($case) || true['$===']($case) || false['$===']($case) || $$($nesting, 'Integer')['$===']($case) || $$($nesting, 'Float')['$===']($case)) {return class_name = rhs.$inspect();}
-    else {return class_name = rhs.$$class;}})()
-      self.$raise($$($nesting, 'ArgumentError'), "" + "comparison of " + ((lhs).$class()) + " with " + (class_name) + " failed")
+      (($eqeqeq(nil, ($ret_or_1 = rhs)) || (($eqeqeq(true, $ret_or_1) || (($eqeqeq(false, $ret_or_1) || (($eqeqeq($$$('Integer'), $ret_or_1) || ($eqeqeq($$$('Float'), $ret_or_1))))))))) ? (class_name = rhs.$inspect()) : (class_name = rhs.$$class))
+      $Kernel.$raise($$$('ArgumentError'), "comparison of " + ((lhs).$class()) + " with " + (class_name) + " failed")
     }
 
     function cmp_or_fail(lhs, rhs) {
       var cmp = (lhs)['$<=>'](rhs);
-      if ($falsy(cmp)) fail_comparison(lhs, rhs);
+      if (!$truthy(cmp)) fail_comparison(lhs, rhs);
       return normalize(cmp);
     }
   ;
     
-    Opal.def(self, '$==', $Comparable_$eq_eq$1 = function(other) {
+    $def(self, '$==', function $Comparable_$eq_eq$1(other) {
       var self = this, cmp = nil;
 
       
       if ($truthy(self['$equal?'](other))) {
-        return true};
+        return true
+      };
       
       if (self["$<=>"] == Opal.Kernel["$<=>"]) {
         return false;
@@ -787,55 +2590,54 @@ Opal.modules["corelib/comparable"] = function(Opal) {
         return false;
       }
     ;
-      if ($truthy((cmp = self['$<=>'](other)))) {
-      } else {
+      if (!$truthy((cmp = self['$<=>'](other)))) {
         return false
       };
       return normalize(cmp) == 0;;
-    }, $Comparable_$eq_eq$1.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$>', $Comparable_$gt$2 = function(other) {
+    $def(self, '$>', function $Comparable_$gt$2(other) {
       var self = this;
 
       return cmp_or_fail(self, other) > 0;
-    }, $Comparable_$gt$2.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$>=', $Comparable_$gt_eq$3 = function(other) {
+    $def(self, '$>=', function $Comparable_$gt_eq$3(other) {
       var self = this;
 
       return cmp_or_fail(self, other) >= 0;
-    }, $Comparable_$gt_eq$3.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$<', $Comparable_$lt$4 = function(other) {
+    $def(self, '$<', function $Comparable_$lt$4(other) {
       var self = this;
 
       return cmp_or_fail(self, other) < 0;
-    }, $Comparable_$lt$4.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$<=', $Comparable_$lt_eq$5 = function(other) {
+    $def(self, '$<=', function $Comparable_$lt_eq$5(other) {
       var self = this;
 
       return cmp_or_fail(self, other) <= 0;
-    }, $Comparable_$lt_eq$5.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$between?', $Comparable_between$ques$6 = function(min, max) {
+    $def(self, '$between?', function $Comparable_between$ques$6(min, max) {
       var self = this;
 
       
       if ($rb_lt(self, min)) {
-        return false};
+        return false
+      };
       if ($rb_gt(self, max)) {
-        return false};
+        return false
+      };
       return true;
-    }, $Comparable_between$ques$6.$$arity = 2);
-    return (Opal.def(self, '$clamp', $Comparable_clamp$7 = function $$clamp(min, max) {
+    }, 2);
+    return $def(self, '$clamp', function $$clamp(min, max) {
       var self = this;
 
       
       
-      if (max == null) {
-        max = nil;
-      };
+      if (max == null) max = nil;;
       
       var c, excl;
 
@@ -844,7 +2646,7 @@ Opal.modules["corelib/comparable"] = function(Opal) {
         // provide a single Range argument instead of 2 Comparables.
 
         if (!Opal.is_a(min, Opal.Range)) {
-          self.$raise($$($nesting, 'TypeError'), "" + "wrong argument type " + (min.$class()) + " (expected Range)")
+          $Kernel.$raise($$$('TypeError'), "wrong argument type " + (min.$class()) + " (expected Range)")
         }
 
         excl = min.excl;
@@ -852,12 +2654,12 @@ Opal.modules["corelib/comparable"] = function(Opal) {
         min = min.begin;
 
         if (max !== nil && excl) {
-          self.$raise($$($nesting, 'ArgumentError'), "cannot clamp with an exclusive range")
+          $Kernel.$raise($$$('ArgumentError'), "cannot clamp with an exclusive range")
         }
       }
 
       if (min !== nil && max !== nil && cmp_or_fail(min, max) > 0) {
-        self.$raise($$($nesting, 'ArgumentError'), "min argument must be smaller than max argument")
+        $Kernel.$raise($$$('ArgumentError'), "min argument must be smaller than max argument")
       }
 
       if (min !== nil) {
@@ -875,156 +2677,153 @@ Opal.modules["corelib/comparable"] = function(Opal) {
 
       return self;
     ;
-    }, $Comparable_clamp$7.$$arity = -2), nil) && 'clamp';
-  })($nesting[0], $nesting)
+    }, -2);
+  })('::')
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["pathname"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send, $alias = Opal.alias, $module = Opal.module;
+Opal.modules["pathname"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $const_set = Opal.const_set, $regexp = Opal.regexp, $eqeqeq = Opal.eqeqeq, $truthy = Opal.truthy, $eqeq = Opal.eqeq, $def = Opal.def, $defs = Opal.defs, $to_ary = Opal.to_ary, $send = Opal.send, $to_a = Opal.to_a, $neqeq = Opal.neqeq, $rb_plus = Opal.rb_plus, $not = Opal.not, $alias = Opal.alias, $module = Opal.module;
 
-  Opal.add_stubs(['$require', '$include', '$quote', '$===', '$to_s', '$path', '$respond_to?', '$to_path', '$is_a?', '$nil?', '$raise', '$class', '$==', '$attr_reader', '$!', '$relative?', '$chop_basename', '$basename', '$=~', '$new', '$source', '$[]', '$rindex', '$sub', '$absolute?', '$expand_path', '$plus', '$unshift', '$length', '$!=', '$empty?', '$first', '$shift', '$+', '$join', '$dirname', '$pop', '$reverse_each', '$directory?', '$extname', '$<=>', '$nonzero?', '$proc', '$casecmp', '$cleanpath', '$inspect', '$include?', '$fill', '$map', '$entries']);
+  Opal.add_stubs('require,include,quote,===,to_s,path,respond_to?,to_path,is_a?,nil?,raise,class,==,new,pwd,attr_reader,!,relative?,chop_basename,basename,=~,source,[],rindex,sub,absolute?,expand_path,plus,unshift,length,!=,empty?,first,shift,+,join,dirname,pop,reverse_each,directory?,extname,<=>,nonzero?,proc,casecmp,cleanpath,inspect,include?,fill,map,entries');
   
   self.$require("corelib/comparable");
   (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Pathname');
 
-    var $nesting = [self].concat($parent_nesting), $Pathname_initialize$1, $Pathname_$eq_eq$2, $Pathname_absolute$ques$3, $Pathname_relative$ques$4, $Pathname_chop_basename$5, $Pathname_root$ques$6, $Pathname_parent$7, $Pathname_sub$8, $Pathname_cleanpath$9, $Pathname_to_path$10, $Pathname_hash$11, $Pathname_expand_path$12, $Pathname_$plus$13, $Pathname_plus$14, $Pathname_join$15, $Pathname_split$17, $Pathname_dirname$18, $Pathname_basename$19, $Pathname_directory$ques$20, $Pathname_extname$21, $Pathname_$lt_eq_gt$22, $Pathname$23, $Pathname$24, $Pathname_relative_path_from$25, $Pathname_entries$26;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-    self.$$prototype.path = nil;
+    $proto.path = nil;
     
-    self.$include($$($nesting, 'Comparable'));
-    Opal.const_set($nesting[0], 'SEPARATOR_PAT', Opal.regexp([$$($nesting, 'Regexp').$quote($$$($$($nesting, 'File'), 'SEPARATOR'))]));
+    self.$include($$('Comparable'));
+    $const_set($nesting[0], 'SEPARATOR_PAT', $regexp([$$('Regexp').$quote($$$($$('File'), 'SEPARATOR'))]));
     
-    Opal.def(self, '$initialize', $Pathname_initialize$1 = function $$initialize(path) {
+    $def(self, '$initialize', function $$initialize(path) {
       var self = this;
 
       
-      if ($truthy($$($nesting, 'Pathname')['$==='](path))) {
+      if ($eqeqeq($$('Pathname'), path)) {
         self.path = path.$path().$to_s()
       } else if ($truthy(path['$respond_to?']("to_path"))) {
         self.path = path.$to_path()
-      } else if ($truthy(path['$is_a?']($$($nesting, 'String')))) {
+      } else if ($truthy(path['$is_a?']($$('String')))) {
         self.path = path
       } else if ($truthy(path['$nil?']())) {
-        self.$raise($$($nesting, 'TypeError'), "no implicit conversion of nil into String")
+        self.$raise($$('TypeError'), "no implicit conversion of nil into String")
       } else {
-        self.$raise($$($nesting, 'TypeError'), "" + "no implicit conversion of " + (path.$class()) + " into String")
+        self.$raise($$('TypeError'), "no implicit conversion of " + (path.$class()) + " into String")
       };
-      if (self.path['$==']("\u0000")) {
-        return self.$raise($$($nesting, 'ArgumentError'))
+      if ($eqeq(self.path, "\u0000")) {
+        return self.$raise($$('ArgumentError'))
       } else {
         return nil
       };
-    }, $Pathname_initialize$1.$$arity = 1);
+    }, 1);
+    $defs(self, '$pwd', function $$pwd() {
+      var self = this;
+
+      return self.$new($$('Dir').$pwd())
+    }, 0);
     self.$attr_reader("path");
     
-    Opal.def(self, '$==', $Pathname_$eq_eq$2 = function(other) {
+    $def(self, '$==', function $Pathname_$eq_eq$1(other) {
       var self = this;
 
       return other.$path()['$=='](self.path)
-    }, $Pathname_$eq_eq$2.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$absolute?', $Pathname_absolute$ques$3 = function() {
+    $def(self, '$absolute?', function $Pathname_absolute$ques$2() {
       var self = this;
 
       return self['$relative?']()['$!']()
-    }, $Pathname_absolute$ques$3.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$relative?', $Pathname_relative$ques$4 = function() {
+    $def(self, '$relative?', function $Pathname_relative$ques$3() {
       var $a, $b, $c, self = this, path = nil, r = nil;
 
       
       path = self.path;
       while ($truthy((r = self.$chop_basename(path)))) {
-        $c = r, $b = Opal.to_ary($c), (path = ($b[0] == null ? nil : $b[0])), $c
+        $c = r, $b = $to_ary($c), (path = ($b[0] == null ? nil : $b[0])), $c
       };
       return path['$==']("");
-    }, $Pathname_relative$ques$4.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$chop_basename', $Pathname_chop_basename$5 = function $$chop_basename(path) {
-      var self = this, base = nil;
+    $def(self, '$chop_basename', function $$chop_basename(path) {
+      var base = nil;
 
       
-      base = $$($nesting, 'File').$basename(path);
-      if ($truthy($$($nesting, 'Regexp').$new("" + "^" + ($$$($$($nesting, 'Pathname'), 'SEPARATOR_PAT').$source()) + "?$")['$=~'](base))) {
+      base = $$('File').$basename(path);
+      if ($truthy($$('Regexp').$new("^" + ($$$($$('Pathname'), 'SEPARATOR_PAT').$source()) + "?$")['$=~'](base))) {
         return nil
       } else {
         return [path['$[]'](0, path.$rindex(base)), base]
       };
-    }, $Pathname_chop_basename$5.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$root?', $Pathname_root$ques$6 = function() {
+    $def(self, '$root?', function $Pathname_root$ques$4() {
       var self = this;
 
       return self.path['$==']("/")
-    }, $Pathname_root$ques$6.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$parent', $Pathname_parent$7 = function $$parent() {
+    $def(self, '$parent', function $$parent() {
       var self = this, new_path = nil;
 
       
       new_path = self.path.$sub(/\/([^\/]+\/?$)/, "");
-      if (new_path['$==']("")) {
-        new_path = (function() {if ($truthy(self['$absolute?']())) {
-          return "/"
-        } else {
-          return "."
-        }; return nil; })()};
-      return $$($nesting, 'Pathname').$new(new_path);
-    }, $Pathname_parent$7.$$arity = 0);
+      if ($eqeq(new_path, "")) {
+        new_path = ($truthy(self['$absolute?']()) ? ("/") : ("."))
+      };
+      return $$('Pathname').$new(new_path);
+    }, 0);
     
-    Opal.def(self, '$sub', $Pathname_sub$8 = function $$sub($a) {
+    $def(self, '$sub', function $$sub($a) {
       var $post_args, args, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
-      return $$($nesting, 'Pathname').$new($send(self.path, 'sub', Opal.to_a(args)));
-    }, $Pathname_sub$8.$$arity = -1);
+      return $$('Pathname').$new($send(self.path, 'sub', $to_a(args)));
+    }, -1);
     
-    Opal.def(self, '$cleanpath', $Pathname_cleanpath$9 = function $$cleanpath() {
+    $def(self, '$cleanpath', function $$cleanpath() {
       var self = this;
 
       return Opal.normalize(self.path)
-    }, $Pathname_cleanpath$9.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_path', $Pathname_to_path$10 = function $$to_path() {
+    $def(self, '$to_path', function $$to_path() {
       var self = this;
 
       return self.path
-    }, $Pathname_to_path$10.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$hash', $Pathname_hash$11 = function $$hash() {
+    $def(self, '$hash', function $$hash() {
       var self = this;
 
       return self.path
-    }, $Pathname_hash$11.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$expand_path', $Pathname_expand_path$12 = function $$expand_path() {
+    $def(self, '$expand_path', function $$expand_path() {
       var self = this;
 
-      return $$($nesting, 'Pathname').$new($$($nesting, 'File').$expand_path(self.path))
-    }, $Pathname_expand_path$12.$$arity = 0);
+      return $$('Pathname').$new($$('File').$expand_path(self.path))
+    }, 0);
     
-    Opal.def(self, '$+', $Pathname_$plus$13 = function(other) {
+    $def(self, '$+', function $Pathname_$plus$5(other) {
       var self = this;
 
       
-      if ($truthy($$($nesting, 'Pathname')['$==='](other))) {
-      } else {
-        other = $$($nesting, 'Pathname').$new(other)
+      if (!$eqeqeq($$('Pathname'), other)) {
+        other = $$('Pathname').$new(other)
       };
-      return $$($nesting, 'Pathname').$new(self.$plus(self.path, other.$to_s()));
-    }, $Pathname_$plus$13.$$arity = 1);
+      return $$('Pathname').$new(self.$plus(self.path, other.$to_s()));
+    }, 1);
     
-    Opal.def(self, '$plus', $Pathname_plus$14 = function $$plus(path1, path2) {
-      var $a, $b, $c, self = this, prefix2 = nil, index_list2 = nil, basename_list2 = nil, r2 = nil, basename2 = nil, prefix1 = nil, $ret_or_1 = nil, r1 = nil, basename1 = nil, $ret_or_2 = nil, $ret_or_3 = nil, $ret_or_4 = nil, $ret_or_5 = nil, suffix2 = nil;
+    $def(self, '$plus', function $$plus(path1, path2) {
+      var $a, $b, $c, self = this, prefix2 = nil, index_list2 = nil, basename_list2 = nil, r2 = nil, basename2 = nil, prefix1 = nil, $ret_or_1 = nil, r1 = nil, basename1 = nil, suffix2 = nil;
 
       
       prefix2 = path2;
@@ -1032,184 +2831,146 @@ Opal.modules["pathname"] = function(Opal) {
       basename_list2 = [];
       while ($truthy((r2 = self.$chop_basename(prefix2)))) {
         
-        $c = r2, $b = Opal.to_ary($c), (prefix2 = ($b[0] == null ? nil : $b[0])), (basename2 = ($b[1] == null ? nil : $b[1])), $c;
+        $c = r2, $b = $to_ary($c), (prefix2 = ($b[0] == null ? nil : $b[0])), (basename2 = ($b[1] == null ? nil : $b[1])), $c;
         index_list2.$unshift(prefix2.$length());
         basename_list2.$unshift(basename2);
       };
-      if ($truthy(prefix2['$!='](""))) {
-        return path2};
+      if ($neqeq(prefix2, "")) {
+        return path2
+      };
       prefix1 = path1;
       while ($truthy(true)) {
         
-        while ($truthy((function() {if ($truthy(($ret_or_1 = basename_list2['$empty?']()['$!']()))) {
-          return basename_list2.$first()['$=='](".")
-        } else {
-          return $ret_or_1
-        }; return nil; })())) {
+        while ($truthy(($truthy(($ret_or_1 = basename_list2['$empty?']()['$!']())) ? (basename_list2.$first()['$=='](".")) : ($ret_or_1)))) {
           
           index_list2.$shift();
           basename_list2.$shift();
         };
-        if ($truthy((r1 = self.$chop_basename(prefix1)))) {
-        } else {
+        if (!$truthy((r1 = self.$chop_basename(prefix1)))) {
           break;
         };
-        $c = r1, $b = Opal.to_ary($c), (prefix1 = ($b[0] == null ? nil : $b[0])), (basename1 = ($b[1] == null ? nil : $b[1])), $c;
-        if (basename1['$=='](".")) {
-          continue;};
-        if ($truthy((function() {if ($truthy(($ret_or_2 = (function() {if ($truthy(($ret_or_3 = basename1['$==']("..")))) {
-          return $ret_or_3
-        } else {
-          return basename_list2['$empty?']()
-        }; return nil; })()))) {
-          return $ret_or_2
-        } else {
-          return basename_list2.$first()['$!=']("..")
-        }; return nil; })())) {
+        $c = r1, $b = $to_ary($c), (prefix1 = ($b[0] == null ? nil : $b[0])), (basename1 = ($b[1] == null ? nil : $b[1])), $c;
+        if ($eqeq(basename1, ".")) {
+          continue;
+        };
+        if ((($eqeq(basename1, "..") || ($truthy(basename_list2['$empty?']()))) || ($neqeq(basename_list2.$first(), "..")))) {
           
           prefix1 = $rb_plus(prefix1, basename1);
-          break;;};
+          break;;
+        };
         index_list2.$shift();
         basename_list2.$shift();
       };
       r1 = self.$chop_basename(prefix1);
-      if ($truthy((function() {if ($truthy(($ret_or_4 = r1['$!']()))) {
-        return Opal.regexp([$$($nesting, 'SEPARATOR_PAT')])['$=~']($$($nesting, 'File').$basename(prefix1))
-      } else {
-        return $ret_or_4
-      }; return nil; })())) {
-        while ($truthy((function() {if ($truthy(($ret_or_5 = basename_list2['$empty?']()['$!']()))) {
-          return basename_list2.$first()['$==']("..")
-        } else {
-          return $ret_or_5
-        }; return nil; })())) {
+      if (($not(r1) && ($truthy($regexp([$$('SEPARATOR_PAT')])['$=~']($$('File').$basename(prefix1)))))) {
+        while ($truthy(($truthy(($ret_or_1 = basename_list2['$empty?']()['$!']())) ? (basename_list2.$first()['$==']("..")) : ($ret_or_1)))) {
           
           index_list2.$shift();
           basename_list2.$shift();
-        }};
-      if ($truthy(basename_list2['$empty?']()['$!']())) {
+        }
+      };
+      if ($not(basename_list2['$empty?']())) {
         
         suffix2 = path2['$[]'](Opal.Range.$new(index_list2.$first(), -1, false));
         if ($truthy(r1)) {
-          return $$($nesting, 'File').$join(prefix1, suffix2)
+          return $$('File').$join(prefix1, suffix2)
         } else {
           return $rb_plus(prefix1, suffix2)
         };
       } else if ($truthy(r1)) {
         return prefix1
       } else {
-        return $$($nesting, 'File').$dirname(prefix1)
+        return $$('File').$dirname(prefix1)
       };
-    }, $Pathname_plus$14.$$arity = 2);
+    }, 2);
     
-    Opal.def(self, '$join', $Pathname_join$15 = function $$join($a) {try {
+    $def(self, '$join', function $$join($a) {try {
 
-      var $post_args, args, $$16, self = this, result = nil;
+      var $post_args, args, self = this, result = nil;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
       if ($truthy(args['$empty?']())) {
-        return self};
+        return self
+      };
       result = args.$pop();
-      if ($truthy($$($nesting, 'Pathname')['$==='](result))) {
-      } else {
-        result = $$($nesting, 'Pathname').$new(result)
+      if (!$eqeqeq($$('Pathname'), result)) {
+        result = $$('Pathname').$new(result)
       };
       if ($truthy(result['$absolute?']())) {
-        return result};
-      $send(args, 'reverse_each', [], ($$16 = function(arg){var self = $$16.$$s == null ? this : $$16.$$s;
-
+        return result
+      };
+      $send(args, 'reverse_each', [], function $$6(arg){
         
         
-        if (arg == null) {
-          arg = nil;
-        };
-        if ($truthy($$($nesting, 'Pathname')['$==='](arg))) {
-        } else {
-          arg = $$($nesting, 'Pathname').$new(arg)
+        if (arg == null) arg = nil;;
+        if (!$eqeqeq($$('Pathname'), arg)) {
+          arg = $$('Pathname').$new(arg)
         };
         result = $rb_plus(arg, result);
         if ($truthy(result['$absolute?']())) {
           Opal.ret(result)
         } else {
           return nil
-        };}, $$16.$$s = self, $$16.$$arity = 1, $$16));
+        };}, 1);
       return $rb_plus(self, result);
       } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
-    }, $Pathname_join$15.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$split', $Pathname_split$17 = function $$split() {
+    $def(self, '$split', function $$split() {
       var self = this;
 
       return [self.$dirname(), self.$basename()]
-    }, $Pathname_split$17.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$dirname', $Pathname_dirname$18 = function $$dirname() {
+    $def(self, '$dirname', function $$dirname() {
       var self = this;
 
-      return $$($nesting, 'Pathname').$new($$($nesting, 'File').$dirname(self.path))
-    }, $Pathname_dirname$18.$$arity = 0);
+      return $$('Pathname').$new($$('File').$dirname(self.path))
+    }, 0);
     
-    Opal.def(self, '$basename', $Pathname_basename$19 = function $$basename() {
+    $def(self, '$basename', function $$basename() {
       var self = this;
 
-      return $$($nesting, 'Pathname').$new($$($nesting, 'File').$basename(self.path))
-    }, $Pathname_basename$19.$$arity = 0);
+      return $$('Pathname').$new($$('File').$basename(self.path))
+    }, 0);
     
-    Opal.def(self, '$directory?', $Pathname_directory$ques$20 = function() {
+    $def(self, '$directory?', function $Pathname_directory$ques$7() {
       var self = this;
 
-      return $$($nesting, 'File')['$directory?'](self.path)
-    }, $Pathname_directory$ques$20.$$arity = 0);
+      return $$('File')['$directory?'](self.path)
+    }, 0);
     
-    Opal.def(self, '$extname', $Pathname_extname$21 = function $$extname() {
+    $def(self, '$extname', function $$extname() {
       var self = this;
 
-      return $$($nesting, 'File').$extname(self.path)
-    }, $Pathname_extname$21.$$arity = 0);
+      return $$('File').$extname(self.path)
+    }, 0);
     
-    Opal.def(self, '$<=>', $Pathname_$lt_eq_gt$22 = function(other) {
+    $def(self, '$<=>', function $Pathname_$lt_eq_gt$8(other) {
       var self = this;
 
       return self.$path()['$<=>'](other.$path())
-    }, $Pathname_$lt_eq_gt$22.$$arity = 1);
-    $alias(self, "eql?", "==");
-    $alias(self, "===", "==");
-    $alias(self, "to_str", "to_path");
-    $alias(self, "to_s", "to_path");
-    Opal.const_set($nesting[0], 'SAME_PATHS', (function() {if ($truthy($$$($$($nesting, 'File'), 'FNM_SYSCASE')['$nonzero?']())) {
-      return $send(self, 'proc', [], ($Pathname$23 = function(a, b){var self = $Pathname$23.$$s == null ? this : $Pathname$23.$$s;
-
-        
-        
-        if (a == null) {
-          a = nil;
-        };
-        
-        if (b == null) {
-          b = nil;
-        };
-        return a.$casecmp(b)['$=='](0);}, $Pathname$23.$$s = self, $Pathname$23.$$arity = 2, $Pathname$23))
-    } else {
-      return $send(self, 'proc', [], ($Pathname$24 = function(a, b){var self = $Pathname$24.$$s == null ? this : $Pathname$24.$$s;
-
-        
-        
-        if (a == null) {
-          a = nil;
-        };
-        
-        if (b == null) {
-          b = nil;
-        };
-        return a['$=='](b);}, $Pathname$24.$$s = self, $Pathname$24.$$arity = 2, $Pathname$24))
-    }; return nil; })());
+    }, 1);
+    $const_set($nesting[0], 'SAME_PATHS', ($truthy($$$($$('File'), 'FNM_SYSCASE')['$nonzero?']()) ? ($send(self, 'proc', [], function $Pathname$9(a, b){
+      
+      
+      if (a == null) a = nil;;
+      
+      if (b == null) b = nil;;
+      return a.$casecmp(b)['$=='](0);}, 2)) : ($send(self, 'proc', [], function $Pathname$10(a, b){
+      
+      
+      if (a == null) a = nil;;
+      
+      if (b == null) b = nil;;
+      return a['$=='](b);}, 2))));
     
-    Opal.def(self, '$relative_path_from', $Pathname_relative_path_from$25 = function $$relative_path_from(base_directory) {
-      var $a, $b, $c, self = this, dest_directory = nil, dest_prefix = nil, dest_names = nil, r = nil, basename = nil, base_prefix = nil, base_names = nil, $ret_or_6 = nil, $ret_or_7 = nil, relpath_names = nil;
+    $def(self, '$relative_path_from', function $$relative_path_from(base_directory) {
+      var $a, $b, $c, self = this, dest_directory = nil, dest_prefix = nil, dest_names = nil, r = nil, basename = nil, base_prefix = nil, base_names = nil, $ret_or_1 = nil, $ret_or_2 = nil, relpath_names = nil;
 
       
       dest_directory = self.$cleanpath().$to_s();
@@ -1218,207 +2979,208 @@ Opal.modules["pathname"] = function(Opal) {
       dest_names = [];
       while ($truthy((r = self.$chop_basename(dest_prefix)))) {
         
-        $c = r, $b = Opal.to_ary($c), (dest_prefix = ($b[0] == null ? nil : $b[0])), (basename = ($b[1] == null ? nil : $b[1])), $c;
-        if ($truthy(basename['$!=']("."))) {
-          dest_names.$unshift(basename)};
+        $c = r, $b = $to_ary($c), (dest_prefix = ($b[0] == null ? nil : $b[0])), (basename = ($b[1] == null ? nil : $b[1])), $c;
+        if ($neqeq(basename, ".")) {
+          dest_names.$unshift(basename)
+        };
       };
       base_prefix = base_directory;
       base_names = [];
       while ($truthy((r = self.$chop_basename(base_prefix)))) {
         
-        $c = r, $b = Opal.to_ary($c), (base_prefix = ($b[0] == null ? nil : $b[0])), (basename = ($b[1] == null ? nil : $b[1])), $c;
-        if ($truthy(basename['$!=']("."))) {
-          base_names.$unshift(basename)};
+        $c = r, $b = $to_ary($c), (base_prefix = ($b[0] == null ? nil : $b[0])), (basename = ($b[1] == null ? nil : $b[1])), $c;
+        if ($neqeq(basename, ".")) {
+          base_names.$unshift(basename)
+        };
       };
-      if ($truthy($$($nesting, 'SAME_PATHS')['$[]'](dest_prefix, base_prefix))) {
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "" + "different prefix: " + (dest_prefix.$inspect()) + " and " + (base_directory.$inspect()))
+      if (!$truthy($$('SAME_PATHS')['$[]'](dest_prefix, base_prefix))) {
+        self.$raise($$('ArgumentError'), "different prefix: " + (dest_prefix.$inspect()) + " and " + (base_directory.$inspect()))
       };
-      while ($truthy((function() {if ($truthy(($ret_or_6 = (function() {if ($truthy(($ret_or_7 = dest_names['$empty?']()['$!']()))) {
-        return base_names['$empty?']()['$!']()
-      } else {
-        return $ret_or_7
-      }; return nil; })()))) {
-        return $$($nesting, 'SAME_PATHS')['$[]'](dest_names.$first(), base_names.$first())
-      } else {
-        return $ret_or_6
-      }; return nil; })())) {
+      while ($truthy(($truthy(($ret_or_1 = ($truthy(($ret_or_2 = dest_names['$empty?']()['$!']())) ? (base_names['$empty?']()['$!']()) : ($ret_or_2)))) ? ($$('SAME_PATHS')['$[]'](dest_names.$first(), base_names.$first())) : ($ret_or_1)))) {
         
         dest_names.$shift();
         base_names.$shift();
       };
       if ($truthy(base_names['$include?'](".."))) {
-        self.$raise($$($nesting, 'ArgumentError'), "" + "base_directory has ..: " + (base_directory.$inspect()))};
+        self.$raise($$('ArgumentError'), "base_directory has ..: " + (base_directory.$inspect()))
+      };
       base_names.$fill("..");
       relpath_names = $rb_plus(base_names, dest_names);
       if ($truthy(relpath_names['$empty?']())) {
-        return $$($nesting, 'Pathname').$new(".")
+        return $$('Pathname').$new(".")
       } else {
-        return $$($nesting, 'Pathname').$new($send($$($nesting, 'File'), 'join', Opal.to_a(relpath_names)))
+        return $$('Pathname').$new($send($$('File'), 'join', $to_a(relpath_names)))
       };
-    }, $Pathname_relative_path_from$25.$$arity = 1);
-    return (Opal.def(self, '$entries', $Pathname_entries$26 = function $$entries() {
-      var $$27, self = this;
+    }, 1);
+    
+    $def(self, '$entries', function $$entries() {
+      var self = this;
 
-      return $send($$($nesting, 'Dir').$entries(self.path), 'map', [], ($$27 = function(f){var self = $$27.$$s == null ? this : $$27.$$s;
+      return $send($$('Dir').$entries(self.path), 'map', [], function $$11(f){var self = $$11.$$s == null ? this : $$11.$$s;
 
         
         
-        if (f == null) {
-          f = nil;
-        };
-        return self.$class().$new(f);}, $$27.$$s = self, $$27.$$arity = 1, $$27))
-    }, $Pathname_entries$26.$$arity = 0), nil) && 'entries';
+        if (f == null) f = nil;;
+        return self.$class().$new(f);}, {$$arity: 1, $$s: self})
+    }, 0);
+    $alias(self, "===", "==");
+    $alias(self, "eql?", "==");
+    $alias(self, "to_s", "to_path");
+    return $alias(self, "to_str", "to_path");
   })($nesting[0], null, $nesting);
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Kernel');
 
-    var $nesting = [self].concat($parent_nesting), $Kernel_Pathname$28;
-
-    return (Opal.def(self, '$Pathname', $Kernel_Pathname$28 = function $$Pathname(path) {
-      var self = this;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return $$($nesting, 'Pathname').$new(path)
-    }, $Kernel_Pathname$28.$$arity = 1), nil) && 'Pathname'
+    return $def(self, '$Pathname', function $$Pathname(path) {
+      
+      return $$('Pathname').$new(path)
+    }, 1)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["nodejs/pathname"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass;
+Opal.modules["nodejs/pathname"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $klass = Opal.klass, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$include', '$to_str', '$!', '$absolute?']);
+  Opal.add_stubs('require,include,to_str,!,absolute?');
   
   self.$require("pathname");
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Pathname');
 
-    var $nesting = [self].concat($parent_nesting), $Pathname_absolute$ques$1, $Pathname_relative$ques$2, $Pathname_to_path$3;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
     if (self.__path__ == null) self.__path__ = nil;
 
-    self.$$prototype.path = nil;
+    $proto.path = nil;
     
-    self.$include($$($nesting, 'Comparable'));
+    self.$include($$('Comparable'));
     self.__path__ = require('path');
     var __path__ = self.__path__;
     
-    Opal.def(self, '$absolute?', $Pathname_absolute$ques$1 = function() {
+    $def(self, '$absolute?', function $Pathname_absolute$ques$1() {
       var self = this;
 
       return __path__.isAbsolute(self.path.$to_str())
-    }, $Pathname_absolute$ques$1.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$relative?', $Pathname_relative$ques$2 = function() {
+    $def(self, '$relative?', function $Pathname_relative$ques$2() {
       var self = this;
 
       return self['$absolute?']()['$!']()
-    }, $Pathname_relative$ques$2.$$arity = 0);
-    return (Opal.def(self, '$to_path', $Pathname_to_path$3 = function $$to_path() {
+    }, 0);
+    return $def(self, '$to_path', function $$to_path() {
       var self = this;
 
       return self.path
-    }, $Pathname_to_path$3.$$arity = 0), nil) && 'to_path';
+    }, 0);
   })($nesting[0], null, $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["nodejs/env"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $alias = Opal.alias, $truthy = Opal.truthy;
+Opal.modules["nodejs/env"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $const_set = Opal.const_set, $def = Opal.def, $truthy = Opal.truthy, $send = Opal.send, $alias = Opal.alias;
 
-  Opal.add_stubs(['$new', '$to_s', '$key?', '$[]', '$raise']);
+  Opal.add_stubs('new,to_s,key?,[],raise,to_h,keys,merge');
   
-  Opal.const_set($nesting[0], 'ENV', $$($nesting, 'Object').$new());
+  $const_set($nesting[0], 'ENV', $$('Object').$new());
   return (function(self, $parent_nesting) {
-    var $nesting = [self].concat($parent_nesting), $$$1, $$$eq$2, $key$ques$3, $empty$ques$4, $keys$5, $delete$6, $fetch$7, $to_s$8;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
     
-    Opal.def(self, '$[]', $$$1 = function(name) {
-      var self = this;
-
+    $def(self, '$[]', function $$$1(name) {
+      
       return process.env[name] || nil
-    }, $$$1.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$[]=', $$$eq$2 = function(name, value) {
-      var self = this;
-
+    $def(self, '$[]=', function $$$eq$2(name, value) {
+      
       return process.env[name.$to_s()] = value.$to_s()
-    }, $$$eq$2.$$arity = 2);
+    }, 2);
     
-    Opal.def(self, '$key?', $key$ques$3 = function(name) {
-      var self = this;
-
+    $def(self, '$key?', function $key$ques$3(name) {
+      
       return process.env.hasOwnProperty(name)
-    }, $key$ques$3.$$arity = 1);
-    $alias(self, "has_key?", "key?");
-    $alias(self, "include?", "key?");
-    $alias(self, "member?", "key?");
+    }, 1);
     
-    Opal.def(self, '$empty?', $empty$ques$4 = function() {
-      var self = this;
-
+    $def(self, '$empty?', function $empty$ques$4() {
+      
       return Object.keys(process.env).length === 0;
-    }, $empty$ques$4.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$keys', $keys$5 = function $$keys() {
-      var self = this;
-
+    $def(self, '$keys', function $$keys() {
+      
       return Object.keys(process.env);
-    }, $keys$5.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$delete', $delete$6 = function(name) {
-      var self = this;
-
+    $def(self, '$delete', function $delete$5(name) {
+      
       
       var value = process.env[name] || nil;
       delete process.env[name];
       return value;
     
-    }, $delete$6.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$fetch', $fetch$7 = function $$fetch(key, default_value) {
-      var $iter = $fetch$7.$$p, block = $iter || nil, self = this;
+    $def(self, '$fetch', function $$fetch(key, default_value) {
+      var block = $$fetch.$$p || nil, self = this;
 
-      if ($iter) $fetch$7.$$p = null;
-      
+      delete $$fetch.$$p;
       
-      if ($iter) $fetch$7.$$p = null;;
+      ;
       ;
       if ($truthy(self['$key?'](key))) {
-        return self['$[]'](key)};
+        return self['$[]'](key)
+      };
       if ((block !== nil)) {
-        return Opal.yield1(block, key)};
-      if ($truthy(typeof(default_value) === 'undefined')) {
-      } else {
+        return Opal.yield1(block, key)
+      };
+      if (!$truthy(typeof(default_value) === 'undefined')) {
         return default_value
       };
-      return self.$raise($$($nesting, 'KeyError'), "key not found");
-    }, $fetch$7.$$arity = -2);
-    return (Opal.def(self, '$to_s', $to_s$8 = function $$to_s() {
+      return self.$raise($$('KeyError'), "key not found");
+    }, -2);
+    
+    $def(self, '$to_s', function $$to_s() {
+      
+      return "ENV"
+    }, 0);
+    
+    $def(self, '$to_h', function $$to_h() {
       var self = this;
 
-      return "ENV"
-    }, $to_s$8.$$arity = 0), nil) && 'to_s';
-  })(Opal.get_singleton_class($$($nesting, 'ENV')), $nesting);
-};
+      return $send(self.$keys(), 'to_h', [], function $$6(k){var self = $$6.$$s == null ? this : $$6.$$s;
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["nodejs"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module;
+        
+        
+        if (k == null) k = nil;;
+        return [k, self['$[]'](k)];}, {$$arity: 1, $$s: self})
+    }, 0);
+    
+    $def(self, '$merge', function $$merge(keys) {
+      var self = this;
 
-  Opal.add_stubs(['$require']);
-  
-  (function($base, $parent_nesting) {
-    var self = $module($base, 'NodeJS');
+      return self.$to_h().$merge(keys)
+    }, 1);
+    $alias(self, "has_key?", "key?");
+    $alias(self, "include?", "key?");
+    $alias(self, "inspect", "to_s");
+    $alias(self, "member?", "key?");
+    return $alias(self, "to_hash", "to_h");
+  })(Opal.get_singleton_class($$('ENV')), $nesting);
+};
 
-    var $nesting = [self].concat($parent_nesting);
+Opal.modules["nodejs"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, nil = Opal.nil;
 
-    return nil
-  })($nesting[0], $nesting);
+  Opal.add_stubs('require');
+  
+  self.$require("nodejs/base");
   self.$require("nodejs/kernel");
   self.$require("nodejs/file");
   self.$require("nodejs/dir");
   self.$require("nodejs/io");
+  self.$require("nodejs/argf");
   self.$require("nodejs/open-uri");
   self.$require("nodejs/pathname");
   return self.$require("nodejs/env");
diff --git a/opal/master/nodejs.min.js b/opal/master/nodejs.min.js
index 9012c8b0..7a0eaf1a 100644
--- a/opal/master/nodejs.min.js
+++ b/opal/master/nodejs.min.js
@@ -1 +1 @@
-Opal.modules["nodejs/kernel"]=function(Opal){Opal.top;var $nesting=[],$$=(Opal.nil,Opal.$$$,Opal.$$),$module=Opal.module;return Opal.add_stubs(["$warn","$to_str"]),Opal.exit=process.exit,function($Kernel_node_require$1,$parent_nesting){var $nesting=[$Kernel_node_require$1=$module($Kernel_node_require$1,"Kernel")].concat($parent_nesting);Opal.const_set($nesting[0],"NODE_REQUIRE",require),Opal.def($Kernel_node_require$1,"$node_require",$Kernel_node_require$1=function(path){return this.$warn("[DEPRECATION] node_require is deprecated. Please use `require('module')` instead."),$$($nesting,"NODE_REQUIRE")(path.$to_str())},$Kernel_node_require$1.$$arity=1)}($nesting[0],$nesting),Opal.const_set($nesting[0],"ARGV",process.argv.slice(2))},Opal.modules["nodejs/file"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$klass=Opal.klass,$truthy=Opal.truthy,$gvars=Opal.gvars;Opal.add_stubs(["$raise","$warn","$const_get","$new","$const_defined?","$const_set","$include","$size","$respond_to?","$path","$join","$call","$exist?","$realpath","$!=","$close","$to_path","$pwd","$to_str","$include?","$delete","$match?","$sub","$attr_reader","$to_a","$each_line","$to_enum","$read","$chomp"]);var errno_code,warnings={},errno_codes=["EACCES","EISDIR","EMFILE","ENOENT","EPERM"];function handle_unsupported_feature(message){switch(Opal.config.unsupported_features_severity){case"error":$$($nesting,"Kernel").$raise($$($nesting,"NotImplementedError"),message);break;case"warning":!void(warnings[string=message]||(warnings[string]=!0,self.$warn(string)))}var string}function executeIOAction(action){try{return action()}catch(error){if(0<=errno_codes.indexOf(error.code))throw $$($nesting,"Errno").$const_get(error.code).$new(error.message);throw error}}for(var i=0,ii=errno_codes.length;i<ii;i++)errno_code=errno_codes[i],$$($nesting,"Errno")["$const_defined?"](errno_code)||$$($nesting,"Errno").$const_set(errno_code,$$($nesting,"Class").$new($$($nesting,"SystemCallError")));return function($File_mtime$22,__util__,$File_close$21){var $File_realpath$4,$File_open$10,$File_each_line$18,$nesting=[$File_mtime$22=$klass($File_mtime$22,__util__,"File")].concat($File_close$21);null==$File_mtime$22.__fs__&&($File_mtime$22.__fs__=nil),null==$File_mtime$22.__path__&&($File_mtime$22.__path__=nil),null==$File_mtime$22.__util__&&($File_mtime$22.__util__=nil),$File_mtime$22.$$prototype.eof=$File_mtime$22.$$prototype.binary_flag=$File_mtime$22.$$prototype.path=$File_mtime$22.$$prototype.fd=nil,$File_mtime$22.$include($$$($$$("::","IO"),"Writable")),$File_mtime$22.$include($$$($$$("::","IO"),"Readable")),$File_mtime$22.__fs__=require("fs"),$File_mtime$22.__path__=require("path"),$File_mtime$22.__util__=require("util");var __fs__=$File_mtime$22.__fs__,__path__=$File_mtime$22.__path__,__util__=$File_mtime$22.__util__,$File_close$21="undefined"!=typeof TextEncoder?TextEncoder:__util__.TextEncoder,__utf8TextDecoder__=new("undefined"!=typeof TextDecoder?TextDecoder:__util__.TextDecoder)("utf8"),__textEncoder__=new $File_close$21;$truthy(__path__.sep!==$$($nesting,"Separator"))&&Opal.const_set($nesting[0],"ALT_SEPARATOR",__path__.sep),Opal.defs($File_mtime$22,"$read",$File_close$21=function(path){return executeIOAction(function(){return __fs__.readFileSync(path).toString()})},$File_close$21.$$arity=1),Opal.defs($File_mtime$22,"$write",$File_close$21=function(path,data){return executeIOAction(function(){return __fs__.writeFileSync(path,data)}),data.$size()},$File_close$21.$$arity=2),Opal.defs($File_mtime$22,"$exist?",$File_close$21=function(path){return $truthy(path["$respond_to?"]("path"))&&(path=path.$path()),executeIOAction(function(){return __fs__.existsSync(path)})},$File_close$21.$$arity=1),Opal.defs($File_mtime$22,"$realpath",$File_realpath$4=function(pathname,dir_string,cache){var $iter=$File_realpath$4.$$p,block=$iter||nil;if($iter&&($File_realpath$4.$$p=null),$iter&&($File_realpath$4.$$p=null),null==dir_string&&(dir_string=nil),null==cache&&(cache=nil),$truthy(dir_string)&&(pathname=this.$join(dir_string,pathname)),block===nil)return executeIOAction(function(){return __fs__.realpathSync(pathname,cache)});__fs__.realpath(pathname,cache,function(error,realpath){error?Opal.IOError.$new(error.message):block.$call(realpath)})},$File_realpath$4.$$arity=-2),Opal.defs($File_mtime$22,"$join",$File_close$21=function($a){var $post_args=Opal.slice.call(arguments,0,arguments.length);return __path__.posix.join.apply(__path__,$post_args)},$File_close$21.$$arity=-1),Opal.defs($File_mtime$22,"$directory?",$File_close$21=function(path){var result=nil,realpath=nil;return!!$truthy(this["$exist?"](path))&&(result=executeIOAction(function(){return!!__fs__.lstatSync(path).isDirectory()}),$truthy(result)||(realpath=this.$realpath(path),$truthy(realpath["$!="](path))&&(result=executeIOAction(function(){return!!__fs__.lstatSync(realpath).isDirectory()}))),result)},$File_close$21.$$arity=1),Opal.defs($File_mtime$22,"$file?",$File_close$21=function(path){var result=nil,realpath=nil;return!!$truthy(this["$exist?"](path))&&(result=executeIOAction(function(){return!!__fs__.lstatSync(path).isFile()}),$truthy(result)||(realpath=this.$realpath(path),$truthy(realpath["$!="](path))&&(result=executeIOAction(function(){return!!__fs__.lstatSync(realpath).isFile()}))),result)},$File_close$21.$$arity=1),Opal.defs($File_mtime$22,"$readable?",$File_close$21=function(path){return!!$truthy(this["$exist?"](path))&&"\n        try {\n          __fs__.accessSync(path, __fs__.R_OK);\n          return true;\n        } catch (error) {\n          return false;\n        }\n      "},$File_close$21.$$arity=1),Opal.defs($File_mtime$22,"$size",$File_close$21=function(path){return executeIOAction(function(){return __fs__.lstatSync(path).size})},$File_close$21.$$arity=1),Opal.defs($File_mtime$22,"$open",$File_open$10=function(path,mode){var $iter=$File_open$10.$$p,$yield=$iter||nil,file=nil;return $iter&&($File_open$10.$$p=null),null==mode&&(mode="r"),file=this.$new(path,mode),$yield!==nil?function(){try{return Opal.yield1($yield,file)}finally{file.$close()}}():file},$File_open$10.$$arity=-2),Opal.defs($File_mtime$22,"$stat",$File_close$21=function(path){return $truthy(path["$respond_to?"]("path"))&&(path=path.$path()),$$$($$($nesting,"File"),"Stat").$new(path)},$File_close$21.$$arity=1),Opal.defs($File_mtime$22,"$mtime",$File_close$21=function(path){return executeIOAction(function(){return __fs__.statSync(path).mtime})},$File_close$21.$$arity=1),Opal.defs($File_mtime$22,"$symlink?",$File_close$21=function(path){return executeIOAction(function(){return __fs__.lstatSync(path).isSymbolicLink()})},$File_close$21.$$arity=1),Opal.defs($File_mtime$22,"$absolute_path",$File_close$21=function(path,basedir){var $ret_or_1=nil;return null==basedir&&(basedir=nil),path=$truthy(path["$respond_to?"]("to_path"))?path.$to_path():path,basedir=$truthy($ret_or_1=basedir)?$ret_or_1:$$($nesting,"Dir").$pwd(),__path__.normalize(__path__.resolve(basedir.$to_str(),path.$to_str())).split(__path__.sep).join(__path__.posix.sep)},$File_close$21.$$arity=-2),Opal.def($File_mtime$22,"$initialize",$File_close$21=function(path,flags){var encoding_option_rx=nil;return null==flags&&(flags="r"),this.binary_flag=flags["$include?"]("b"),flags=flags.$delete("b"),$truthy((encoding_option_rx=/:(.*)/)["$match?"](flags))&&(handle_unsupported_feature("Encoding option (:encoding) is unsupported by Node.js openSync method and will be removed."),flags=flags.$sub(encoding_option_rx,"")),this.path=path,this.flags=flags,this.fd=executeIOAction(function(){return __fs__.openSync(path,flags)})},$File_close$21.$$arity=-2),$File_mtime$22.$attr_reader("path"),Opal.def($File_mtime$22,"$read",$File_close$21=function(){var buf,self=this,res=nil;return $truthy(self.eof)?"":(res=$truthy(self.binary_flag)?function(bytes){for(var i=0;i<bytes.length;)if(9===bytes[i]||10===bytes[i]||13===bytes[i]||32<=bytes[i]&&bytes[i]<=126)i+=1;else if(194<=bytes[i]&&bytes[i]<=223&&128<=bytes[i+1]&&bytes[i+1]<=191)i+=2;else if(224===bytes[i]&&160<=bytes[i+1]&&bytes[i+1]<=191&&128<=bytes[i+2]&&bytes[i+2]<=191||(225<=bytes[i]&&bytes[i]<=236||238===bytes[i]||239===bytes[i])&&128<=bytes[i+1]&&bytes[i+1]<=191&&128<=bytes[i+2]&&bytes[i+2]<=191||237===bytes[i]&&128<=bytes[i+1]&&bytes[i+1]<=159&&128<=bytes[i+2]&&bytes[i+2]<=191)i+=3;else{if(!(240===bytes[i]&&144<=bytes[i+1]&&bytes[i+1]<=191&&128<=bytes[i+2]&&bytes[i+2]<=191&&128<=bytes[i+3]&&bytes[i+3]<=191||241<=bytes[i]&&bytes[i]<=243&&128<=bytes[i+1]&&bytes[i+1]<=191&&128<=bytes[i+2]&&bytes[i+2]<=191&&128<=bytes[i+3]&&bytes[i+3]<=191||244===bytes[i]&&128<=bytes[i+1]&&bytes[i+1]<=143&&128<=bytes[i+2]&&bytes[i+2]<=191&&128<=bytes[i+3]&&bytes[i+3]<=191))return;i+=4}return 1}(buf=executeIOAction(function(){return __fs__.readFileSync(self.path)}))?buf.toString("utf8"):__utf8TextDecoder__.decode(__textEncoder__.encode(buf.toString("binary"))):executeIOAction(function(){return __fs__.readFileSync(self.path).toString("utf8")}),self.eof=!0,self.lineno=res.$size(),res)},$File_close$21.$$arity=0),Opal.def($File_mtime$22,"$readlines",$File_close$21=function(separator){return null==$gvars["/"]&&($gvars["/"]=nil),null==separator&&(separator=$gvars["/"]),this.$each_line(separator).$to_a()},$File_close$21.$$arity=-1),Opal.def($File_mtime$22,"$each_line",$File_each_line$18=function(separator){var chomped=$File_each_line$18.$$p,block=chomped||nil,self=this,lines=nil;if(null==$gvars["/"]&&($gvars["/"]=nil),chomped&&($File_each_line$18.$$p=null),chomped&&($File_each_line$18.$$p=null),null==separator&&(separator=$gvars["/"]),$truthy(self.eof))return block!==nil?self:[].$to_enum();if(block===nil)return self.$read().$each_line(separator);lines=$$($nesting,"File").$read(self.path),self.eof=!1,self.lineno=0;for(var chomped=lines.$chomp(),trailing=lines.length!=chomped.length,splitted=chomped.split(separator),i=0,length=splitted.length;i<length;i++)self.lineno+=1,i<length-1||trailing?Opal.yield1(block,splitted[i]+separator):Opal.yield1(block,splitted[i]);return self.eof=!0,self},$File_each_line$18.$$arity=-1),Opal.def($File_mtime$22,"$write",$File_close$21=function(string){var self=this;return executeIOAction(function(){return __fs__.writeSync(self.fd,string)})},$File_close$21.$$arity=1),Opal.def($File_mtime$22,"$flush",$File_close$21=function(){var self=this;return executeIOAction(function(){return __fs__.fsyncSync(self.fd)})},$File_close$21.$$arity=0),Opal.def($File_mtime$22,"$close",$File_close$21=function(){var self=this;return executeIOAction(function(){return __fs__.closeSync(self.fd)})},$File_close$21.$$arity=0),Opal.def($File_mtime$22,"$mtime",$File_mtime$22=function(){var self=this;return executeIOAction(function(){return __fs__.statSync(self.path).mtime})},$File_mtime$22.$$arity=0)}($nesting[0],$$($nesting,"IO"),$nesting),function($Stat_mtime$25,$Stat_file$ques$24){$Stat_mtime$25=$klass($Stat_mtime$25,null,"Stat"),[$Stat_mtime$25].concat($Stat_file$ques$24);null==$Stat_mtime$25.__fs__&&($Stat_mtime$25.__fs__=nil),$Stat_mtime$25.$$prototype.path=nil,$Stat_mtime$25.__fs__=require("fs");var __fs__=$Stat_mtime$25.__fs__;return Opal.def($Stat_mtime$25,"$initialize",$Stat_file$ques$24=function(path){return this.path=path},$Stat_file$ques$24.$$arity=1),Opal.def($Stat_mtime$25,"$file?",$Stat_file$ques$24=function(){var self=this;return executeIOAction(function(){return __fs__.statSync(self.path).isFile()})},$Stat_file$ques$24.$$arity=0),Opal.def($Stat_mtime$25,"$mtime",$Stat_mtime$25=function(){var self=this;return executeIOAction(function(){return __fs__.statSync(self.path).mtime})},$Stat_mtime$25.$$arity=0),nil&&"mtime"}($$($nesting,"File"),$nesting)},Opal.modules["nodejs/dir"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send,$alias=Opal.alias;return Opal.add_stubs(["$respond_to?","$flat_map","$to_path","$coerce_to!"]),function(self,$nesting){self=$klass(self,null,"Dir"),$nesting=[self].concat($nesting);null==self.__glob__&&(self.__glob__=nil),null==self.__fs__&&(self.__fs__=nil),null==self.__path__&&(self.__path__=nil),null==self.__os__&&(self.__os__=nil),self.__glob__=require("glob"),self.__fs__=require("fs"),self.__path__=require("path"),self.__os__=require("os");var __glob__=self.__glob__,__fs__=self.__fs__,__path__=self.__path__,__os__=self.__os__;return function(self,$glob$7){var $nesting=[self].concat($glob$7);return Opal.def(self,"$[]",$glob$7=function(glob){return __glob__.sync(glob)},$glob$7.$$arity=1),Opal.def(self,"$pwd",$glob$7=function(){return process.cwd().split(__path__.sep).join(__path__.posix.sep)},$glob$7.$$arity=0),Opal.def(self,"$home",$glob$7=function(){return __os__.homedir()},$glob$7.$$arity=0),Opal.def(self,"$chdir",$glob$7=function(path){return process.chdir(path)},$glob$7.$$arity=1),Opal.def(self,"$mkdir",$glob$7=function(path){return __fs__.mkdirSync(path)},$glob$7.$$arity=1),Opal.def(self,"$entries",$glob$7=function(dirname){for(var result=[],entries=__fs__.readdirSync(dirname),i=0,ii=entries.length;i<ii;i++)result.push(entries[i]);return result},$glob$7.$$arity=1),Opal.def(self,"$glob",$glob$7=function(pattern){var $$8;return $truthy(pattern["$respond_to?"]("each"))||(pattern=[pattern]),$send(pattern,"flat_map",[],(($$8=function(subpattern){null==$$8.$$s||$$8.$$s;return null==subpattern&&(subpattern=nil),$truthy(subpattern["$respond_to?"]("to_path"))&&(subpattern=subpattern.$to_path()),subpattern=$$($nesting,"Opal")["$coerce_to!"](subpattern,$$($nesting,"String"),"to_str"),__glob__.sync(subpattern)}).$$s=this,$$8.$$arity=1,$$8))},$glob$7.$$arity=1),$alias(self,"getwd","pwd")}(Opal.get_singleton_class(self),$nesting)}($nesting[0],$nesting)},Opal.modules["nodejs/io"]=function(Opal){function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}var $$5,$$6,$writer,self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$klass=Opal.klass,$lambda=Opal.lambda,$send=Opal.send;return Opal.add_stubs(["$attr_reader","$write","$read","$write_proc=","$-","$tty="]),function($IO_binread$4,$IO_read$3){var $nesting=[$IO_binread$4=$klass($IO_binread$4,null,"IO")].concat($IO_read$3);null==$IO_binread$4.__fs__&&($IO_binread$4.__fs__=nil),$IO_binread$4.__fs__=require("fs");var 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__fs__=require("fs");return $writer=[function(_count){var count,buf=Buffer.alloc(65536);try{count=__fs__.readSync(this.fd,buf,0,65536,null)}catch(e){return nil}return 0==count?nil:buf.toString("utf8",0,count)}],$send($$("STDIN"),"read_proc=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],$writer=[!0],$send($$("STDIN"),"tty=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],$writer=[!0],$send($$("STDOUT"),"tty=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],$writer=[!0],$send($$("STDERR"),"tty=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]},Opal.modules.native=function(Opal){var 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$b,prefix2=nil,index_list2=nil,basename_list2=nil,r2=nil,basename2=nil,prefix1=nil,$ret_or_1=nil,r1=nil,basename1=nil,suffix2=nil;for(prefix2=path2,index_list2=[],basename_list2=[];$truthy(r2=this.$chop_basename(prefix2));)prefix2=null==($b=$to_ary(r2))[0]?nil:$b[0],basename2=null==$b[1]?nil:$b[1],index_list2.$unshift(prefix2.$length()),basename_list2.$unshift(basename2);if($neqeq(prefix2,""))return path2;for(prefix1=path1;$truthy(!0);){for(;$truthy($truthy($ret_or_1=basename_list2["$empty?"]()["$!"]())?basename_list2.$first()["$=="]("."):$ret_or_1);)index_list2.$shift(),basename_list2.$shift();if(!$truthy(r1=this.$chop_basename(prefix1)))break;if(prefix1=null==($b=$to_ary(r1))[0]?nil:$b[0],basename1=null==$b[1]?nil:$b[1],!$eqeq(basename1,".")){if($eqeq(basename1,"..")||$truthy(basename_list2["$empty?"]())||$neqeq(basename_list2.$first(),"..")){prefix1=$rb_plus(prefix1,basename1);break}index_list2.$shift(),basename_list2.$shift()}}if(r1=this.$chop_basename(prefix1),$not(r1)&&$truthy($regexp([$$("SEPARATOR_PAT")])["$=~"]($$("File").$basename(prefix1))))for(;$truthy($truthy($ret_or_1=basename_list2["$empty?"]()["$!"]())?basename_list2.$first()["$=="](".."):$ret_or_1);)index_list2.$shift(),basename_list2.$shift();return $not(basename_list2["$empty?"]())?(suffix2=path2["$[]"](Opal.Range.$new(index_list2.$first(),-1,!1)),$truthy(r1)?$$("File").$join(prefix1,suffix2):$rb_plus(prefix1,suffix2)):$truthy(r1)?prefix1:$$("File").$dirname(prefix1)}),2),$def(self,"$join",(function($a){try{var $post_args,args,self=this,result=nil;return $post_args=Opal.slice.call(arguments),$truthy((args=$post_args)["$empty?"]())?self:(result=args.$pop(),$eqeqeq($$("Pathname"),result)||(result=$$("Pathname").$new(result)),$truthy(result["$absolute?"]())?result:($send(args,"reverse_each",[],(function(arg){if(null==arg&&(arg=nil),$eqeqeq($$("Pathname"),arg)||(arg=$$("Pathname").$new(arg)),result=$rb_plus(arg,result),!$truthy(result["$absolute?"]()))return nil;Opal.ret(result)}),1),$rb_plus(self,result)))}catch($returner){if($returner===Opal.returner)return $returner.$v;throw $returner}}),-1),$def(self,"$split",(function(){return[this.$dirname(),this.$basename()]}),0),$def(self,"$dirname",(function(){return $$("Pathname").$new($$("File").$dirname(this.path))}),0),$def(self,"$basename",(function(){return $$("Pathname").$new($$("File").$basename(this.path))}),0),$def(self,"$directory?",(function(){return $$("File")["$directory?"](this.path)}),0),$def(self,"$extname",(function(){return $$("File").$extname(this.path)}),0),$def(self,"$<=>",(function(other){return this.$path()["$<=>"](other.$path())}),1),$const_set($nesting[0],"SAME_PATHS",$truthy($$$($$("File"),"FNM_SYSCASE")["$nonzero?"]())?$send(self,"proc",[],(function(a,b){return null==a&&(a=nil),null==b&&(b=nil),a.$casecmp(b)["$=="](0)}),2):$send(self,"proc",[],(function(a,b){return null==a&&(a=nil),null==b&&(b=nil),a["$=="](b)}),2)),$def(self,"$relative_path_from",(function(base_directory){var $b,dest_directory,dest_prefix=nil,dest_names=nil,r=nil,basename=nil,base_prefix=nil,base_names=nil,$ret_or_1=nil,$ret_or_2=nil,relpath_names=nil;for(dest_directory=this.$cleanpath().$to_s(),base_directory=base_directory.$cleanpath().$to_s(),dest_prefix=dest_directory,dest_names=[];$truthy(r=this.$chop_basename(dest_prefix));)dest_prefix=null==($b=$to_ary(r))[0]?nil:$b[0],basename=null==$b[1]?nil:$b[1],$neqeq(basename,".")&&dest_names.$unshift(basename);for(base_prefix=base_directory,base_names=[];$truthy(r=this.$chop_basename(base_prefix));)base_prefix=null==($b=$to_ary(r))[0]?nil:$b[0],basename=null==$b[1]?nil:$b[1],$neqeq(basename,".")&&base_names.$unshift(basename);for($truthy($$("SAME_PATHS")["$[]"](dest_prefix,base_prefix))||this.$raise($$("ArgumentError"),"different prefix: "+dest_prefix.$inspect()+" and "+base_directory.$inspect());$truthy($truthy($ret_or_1=$truthy($ret_or_2=dest_names["$empty?"]()["$!"]())?base_names["$empty?"]()["$!"]():$ret_or_2)?$$("SAME_PATHS")["$[]"](dest_names.$first(),base_names.$first()):$ret_or_1);)dest_names.$shift(),base_names.$shift();return $truthy(base_names["$include?"](".."))&&this.$raise($$("ArgumentError"),"base_directory has ..: "+base_directory.$inspect()),base_names.$fill(".."),relpath_names=$rb_plus(base_names,dest_names),$truthy(relpath_names["$empty?"]())?$$("Pathname").$new("."):$$("Pathname").$new($send($$("File"),"join",$to_a(relpath_names)))}),1),$def(self,"$entries",(function(){return $send($$("Dir").$entries(this.path),"map",[],(function $$11(f){return null==f&&(f=nil),(null==$$11.$$s?this:$$11.$$s).$class().$new(f)}),{$$arity:1,$$s:this})}),0),$alias(self,"===","=="),$alias(self,"eql?","=="),$alias(self,"to_s","to_path"),$alias(self,"to_str","to_path")}($nesting[0],0,$nesting),function($base,$parent_nesting){var self=$module($base,"Kernel"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return $def(self,"$Pathname",(function(path){return $$("Pathname").$new(path)}),1)}($nesting[0],$nesting)},Opal.modules["nodejs/pathname"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$klass=Opal.klass,$def=Opal.def;return Opal.add_stubs("require,include,to_str,!,absolute?"),self.$require("pathname"),function($base,$super,$parent_nesting){var self=$klass($base,null,"Pathname"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;null==self.__path__&&(self.__path__=nil),$proto.path=nil,self.$include($$("Comparable")),self.__path__=require("path");var __path__=self.__path__;return $def(self,"$absolute?",(function(){return __path__.isAbsolute(this.path.$to_str())}),0),$def(self,"$relative?",(function(){return this["$absolute?"]()["$!"]()}),0),$def(self,"$to_path",(function(){return this.path}),0)}($nesting[0],0,$nesting)},Opal.modules["nodejs/env"]=function(Opal){var $nesting=[],$$=Opal.$r($nesting),nil=Opal.nil,$const_set=Opal.const_set,$def=Opal.def,$truthy=Opal.truthy,$send=Opal.send,$alias=Opal.alias;return Opal.add_stubs("new,to_s,key?,[],raise,to_h,keys,merge"),$const_set($nesting[0],"ENV",$$("Object").$new()),function(self,$parent_nesting){var $nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return $def(self,"$[]",(function(name){return process.env[name]||nil}),1),$def(self,"$[]=",(function(name,value){return process.env[name.$to_s()]=value.$to_s()}),2),$def(self,"$key?",(function(name){return process.env.hasOwnProperty(name)}),1),$def(self,"$empty?",(function(){return 0===Object.keys(process.env).length}),0),$def(self,"$keys",(function(){return Object.keys(process.env)}),0),$def(self,"$delete",(function(name){var value=process.env[name]||nil;return delete process.env[name],value}),1),$def(self,"$fetch",(function $$fetch(key,default_value){var block=$$fetch.$$p||nil;return delete $$fetch.$$p,$truthy(this["$key?"](key))?this["$[]"](key):block!==nil?Opal.yield1(block,key):$truthy(void 0===default_value)?this.$raise($$("KeyError"),"key not found"):default_value}),-2),$def(self,"$to_s",(function(){return"ENV"}),0),$def(self,"$to_h",(function(){return $send(this.$keys(),"to_h",[],(function $$6(k){return null==k&&(k=nil),[k,(null==$$6.$$s?this:$$6.$$s)["$[]"](k)]}),{$$arity:1,$$s:this})}),0),$def(self,"$merge",(function(keys){return this.$to_h().$merge(keys)}),1),$alias(self,"has_key?","key?"),$alias(self,"include?","key?"),$alias(self,"inspect","to_s"),$alias(self,"member?","key?"),$alias(self,"to_hash","to_h")}(Opal.get_singleton_class($$("ENV")),$nesting)},Opal.modules.nodejs=function(Opal){var self=Opal.top;Opal.nil;return Opal.add_stubs("require"),self.$require("nodejs/base"),self.$require("nodejs/kernel"),self.$require("nodejs/file"),self.$require("nodejs/dir"),self.$require("nodejs/io"),self.$require("nodejs/argf"),self.$require("nodejs/open-uri"),self.$require("nodejs/pathname"),self.$require("nodejs/env")};
diff --git a/opal/master/nodejs.min.js.gz b/opal/master/nodejs.min.js.gz
index 2ad5cefa..c8c72f17 100644
Binary files a/opal/master/nodejs.min.js.gz and b/opal/master/nodejs.min.js.gz differ
diff --git a/opal/master/observer.js b/opal/master/observer.js
index 40917602..d1614e3b 100644
--- a/opal/master/observer.js
+++ b/opal/master/observer.js
@@ -1,42 +1,34 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["observer"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $truthy = Opal.truthy, $hash2 = Opal.hash2, $send = Opal.send;
+Opal.modules["observer"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $truthy = Opal.truthy, $hash2 = Opal.hash2, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $def = Opal.def;
 
-  Opal.add_stubs(['$respond_to?', '$raise', '$new', '$to_s', '$[]=', '$-', '$delete', '$clear', '$size', '$each', '$send']);
+  Opal.add_stubs('respond_to?,raise,new,to_s,[]=,-,delete,clear,size,each,send');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Observable');
 
-    var $nesting = [self].concat($parent_nesting), $Observable_add_observer$1, $Observable_delete_observer$2, $Observable_delete_observers$3, $Observable_count_observers$4, $Observable_changed$5, $Observable_changed$ques$6, $Observable_notify_observers$7;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
     
-    Opal.def(self, '$add_observer', $Observable_add_observer$1 = function $$add_observer(observer, func) {
+    $def(self, '$add_observer', function $$add_observer(observer, func) {
       var $a, self = this, $writer = nil;
       if (self.observer_peers == null) self.observer_peers = nil;
 
       
       
-      if (func == null) {
-        func = "update";
-      };
-      if ($truthy((($a = self['observer_peers'], $a != null && $a !== nil) ? 'instance-variable' : nil))) {
-      } else {
+      if (func == null) func = "update";;
+      if (!$truthy((($a = self['observer_peers'], $a != null && $a !== nil) ? 'instance-variable' : nil))) {
         self.observer_peers = $hash2([], {})
       };
-      if ($truthy(observer['$respond_to?'](func))) {
-      } else {
-        self.$raise($$($nesting, 'NoMethodError').$new("" + "observer does not respond to `" + (func.$to_s()) + "'", func.$to_s()))
+      if (!$truthy(observer['$respond_to?'](func))) {
+        self.$raise($$('NoMethodError').$new("observer does not respond to `" + (func.$to_s()) + "'", func.$to_s()))
       };
       
       $writer = [observer, func];
-      $send(self.observer_peers, '[]=', Opal.to_a($writer));
+      $send(self.observer_peers, '[]=', $to_a($writer));
       return $writer[$rb_minus($writer["length"], 1)];;
-    }, $Observable_add_observer$1.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$delete_observer', $Observable_delete_observer$2 = function $$delete_observer(observer) {
+    $def(self, '$delete_observer', function $$delete_observer(observer) {
       var $a, self = this;
       if (self.observer_peers == null) self.observer_peers = nil;
 
@@ -45,9 +37,9 @@ Opal.modules["observer"] = function(Opal) {
       } else {
         return nil
       }
-    }, $Observable_delete_observer$2.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$delete_observers', $Observable_delete_observers$3 = function $$delete_observers() {
+    $def(self, '$delete_observers', function $$delete_observers() {
       var $a, self = this;
       if (self.observer_peers == null) self.observer_peers = nil;
 
@@ -56,9 +48,9 @@ Opal.modules["observer"] = function(Opal) {
       } else {
         return nil
       }
-    }, $Observable_delete_observers$3.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$count_observers', $Observable_count_observers$4 = function $$count_observers() {
+    $def(self, '$count_observers', function $$count_observers() {
       var $a, self = this;
       if (self.observer_peers == null) self.observer_peers = nil;
 
@@ -67,66 +59,52 @@ Opal.modules["observer"] = function(Opal) {
       } else {
         return 0
       }
-    }, $Observable_count_observers$4.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$changed', $Observable_changed$5 = function $$changed(state) {
+    $def(self, '$changed', function $$changed(state) {
       var self = this;
 
       
       
-      if (state == null) {
-        state = true;
-      };
+      if (state == null) state = true;;
       return (self.observer_state = state);
-    }, $Observable_changed$5.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$changed?', $Observable_changed$ques$6 = function() {
-      var $a, self = this, $ret_or_1 = nil;
+    $def(self, '$changed?', function $Observable_changed$ques$1() {
+      var $a, self = this;
       if (self.observer_state == null) self.observer_state = nil;
 
-      if ($truthy((function() {if ($truthy(($ret_or_1 = (($a = self['observer_state'], $a != null && $a !== nil) ? 'instance-variable' : nil)))) {
-        return self.observer_state
-      } else {
-        return $ret_or_1
-      }; return nil; })())) {
+      if (($truthy((($a = self['observer_state'], $a != null && $a !== nil) ? 'instance-variable' : nil)) && ($truthy(self.observer_state)))) {
         return true
       } else {
         return false
       }
-    }, $Observable_changed$ques$6.$$arity = 0);
-    return (Opal.def(self, '$notify_observers', $Observable_notify_observers$7 = function $$notify_observers($a) {
-      var $post_args, arg, $b, $c, $$8, self = this, $ret_or_2 = nil;
+    }, 0);
+    return $def(self, '$notify_observers', function $$notify_observers($a) {
+      var $post_args, arg, $b, $c, self = this;
       if (self.observer_state == null) self.observer_state = nil;
       if (self.observer_peers == null) self.observer_peers = nil;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       arg = $post_args;;
-      if ($truthy((function() {if ($truthy(($ret_or_2 = (($b = self['observer_state'], $b != null && $b !== nil) ? 'instance-variable' : nil)))) {
-        return self.observer_state
-      } else {
-        return $ret_or_2
-      }; return nil; })())) {
+      if (($truthy((($b = self['observer_state'], $b != null && $b !== nil) ? 'instance-variable' : nil)) && ($truthy(self.observer_state)))) {
         
         if ($truthy((($c = self['observer_peers'], $c != null && $c !== nil) ? 'instance-variable' : nil))) {
-          $send(self.observer_peers, 'each', [], ($$8 = function(k, v){var self = $$8.$$s == null ? this : $$8.$$s;
-
+          $send(self.observer_peers, 'each', [], function $$2(k, v){
             
             
-            if (k == null) {
-              k = nil;
-            };
+            if (k == null) k = nil;;
             
-            if (v == null) {
-              v = nil;
-            };
-            return $send(k, 'send', [v].concat(Opal.to_a(arg)));}, $$8.$$s = self, $$8.$$arity = 2, $$8))};
+            if (v == null) v = nil;;
+            return $send(k, 'send', [v].concat($to_a(arg)));}, 2)
+        };
         return (self.observer_state = false);
       } else {
         return nil
       };
-    }, $Observable_notify_observers$7.$$arity = -1), nil) && 'notify_observers';
+    }, -1);
   })($nesting[0], $nesting)
 };
diff --git a/opal/master/observer.min.js b/opal/master/observer.min.js
index 7ab49f1a..554aac00 100644
--- a/opal/master/observer.min.js
+++ b/opal/master/observer.min.js
@@ -1 +1 @@
-Opal.modules.observer=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$truthy=Opal.truthy,$hash2=Opal.hash2,$send=Opal.send;return Opal.add_stubs(["$respond_to?","$raise","$new","$to_s","$[]=","$-","$delete","$clear","$size","$each","$send"]),function($Observable_notify_observers$7,$Observable_changed$ques$6){var $Observable_notify_observers$7=$module($Observable_notify_observers$7,"Observable"),$nesting=[$Observable_notify_observers$7].concat($Observable_changed$ques$6);return Opal.def($Observable_notify_observers$7,"$add_observer",$Observable_changed$ques$6=function(observer,rhs){var $a,lhs=nil;return null==this.observer_peers&&(this.observer_peers=nil),null==rhs&&(rhs="update"),$truthy(null!=($a=this.observer_peers)&&$a!==nil?"instance-variable":nil)||(this.observer_peers=$hash2([],{})),$truthy(observer["$respond_to?"](rhs))||this.$raise($$($nesting,"NoMethodError").$new("observer does not respond to `"+rhs.$to_s()+"'",rhs.$to_s())),lhs=[observer,rhs],$send(this.observer_peers,"[]=",Opal.to_a(lhs)),lhs[rhs=1,"number"==typeof(lhs=lhs.length)&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)]},$Observable_changed$ques$6.$$arity=-2),Opal.def($Observable_notify_observers$7,"$delete_observer",$Observable_changed$ques$6=function(observer){var $a;return null==this.observer_peers&&(this.observer_peers=nil),$truthy(null!=($a=this.observer_peers)&&$a!==nil?"instance-variable":nil)?this.observer_peers.$delete(observer):nil},$Observable_changed$ques$6.$$arity=1),Opal.def($Observable_notify_observers$7,"$delete_observers",$Observable_changed$ques$6=function(){var $a;return null==this.observer_peers&&(this.observer_peers=nil),$truthy(null!=($a=this.observer_peers)&&$a!==nil?"instance-variable":nil)?this.observer_peers.$clear():nil},$Observable_changed$ques$6.$$arity=0),Opal.def($Observable_notify_observers$7,"$count_observers",$Observable_changed$ques$6=function(){var $a;return null==this.observer_peers&&(this.observer_peers=nil),$truthy(null!=($a=this.observer_peers)&&$a!==nil?"instance-variable":nil)?this.observer_peers.$size():0},$Observable_changed$ques$6.$$arity=0),Opal.def($Observable_notify_observers$7,"$changed",$Observable_changed$ques$6=function(state){return null==state&&(state=!0),this.observer_state=state},$Observable_changed$ques$6.$$arity=-1),Opal.def($Observable_notify_observers$7,"$changed?",$Observable_changed$ques$6=function(){var $a,self=this,$ret_or_1=nil;return null==self.observer_state&&(self.observer_state=nil),!!$truthy($truthy(($a=self.observer_state,$ret_or_1=null!=$a&&$a!==nil?"instance-variable":nil))?self.observer_state:$ret_or_1)},$Observable_changed$ques$6.$$arity=0),Opal.def($Observable_notify_observers$7,"$notify_observers",$Observable_notify_observers$7=function($a){var arg,$b,$$8,self=this,$c=nil;return null==self.observer_state&&(self.observer_state=nil),null==self.observer_peers&&(self.observer_peers=nil),$b=Opal.slice.call(arguments,0,arguments.length),arg=$b,$truthy($truthy(($b=self.observer_state,$c=null!=$b&&$b!==nil?"instance-variable":nil))?self.observer_state:$c)?($truthy(null!=($c=self.observer_peers)&&$c!==nil?"instance-variable":nil)&&$send(self.observer_peers,"each",[],(($$8=function(k,v){null==$$8.$$s||$$8.$$s;return null==k&&(k=nil),null==v&&(v=nil),$send(k,"send",[v].concat(Opal.to_a(arg)))}).$$s=self,$$8.$$arity=2,$$8)),self.observer_state=!1):nil},$Observable_notify_observers$7.$$arity=-1),nil&&"notify_observers"}($nesting[0],$nesting)};
+Opal.modules.observer=function(Opal){var $nesting=[],nil=Opal.nil,$module=Opal.module,$truthy=Opal.truthy,$hash2=Opal.hash2,$send=Opal.send,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$def=Opal.def;return Opal.add_stubs("respond_to?,raise,new,to_s,[]=,-,delete,clear,size,each,send"),function($base,$parent_nesting){var self=$module($base,"Observable"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return $def(self,"$add_observer",(function(observer,func){var $a,$writer;return null==this.observer_peers&&(this.observer_peers=nil),null==func&&(func="update"),$truthy(null!=($a=this.observer_peers)&&$a!==nil?"instance-variable":nil)||(this.observer_peers=$hash2([],{})),$truthy(observer["$respond_to?"](func))||this.$raise($$("NoMethodError").$new("observer does not respond to `"+func.$to_s()+"'",func.$to_s())),$writer=[observer,func],$send(this.observer_peers,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]}),-2),$def(self,"$delete_observer",(function(observer){var $a;return null==this.observer_peers&&(this.observer_peers=nil),$truthy(null!=($a=this.observer_peers)&&$a!==nil?"instance-variable":nil)?this.observer_peers.$delete(observer):nil}),1),$def(self,"$delete_observers",(function(){var $a;return null==this.observer_peers&&(this.observer_peers=nil),$truthy(null!=($a=this.observer_peers)&&$a!==nil?"instance-variable":nil)?this.observer_peers.$clear():nil}),0),$def(self,"$count_observers",(function(){var $a;return null==this.observer_peers&&(this.observer_peers=nil),$truthy(null!=($a=this.observer_peers)&&$a!==nil?"instance-variable":nil)?this.observer_peers.$size():0}),0),$def(self,"$changed",(function(state){return null==state&&(state=!0),this.observer_state=state}),-1),$def(self,"$changed?",(function(){var $a;return null==this.observer_state&&(this.observer_state=nil),!(!$truthy(($a=this.observer_state,null!=$a&&$a!==nil?"instance-variable":nil))||!$truthy(this.observer_state))}),0),$def(self,"$notify_observers",(function($a){var $post_args,arg,$b,$c,self=this;return null==self.observer_state&&(self.observer_state=nil),null==self.observer_peers&&(self.observer_peers=nil),$post_args=Opal.slice.call(arguments),arg=$post_args,$truthy(null!=($b=self.observer_state)&&$b!==nil?"instance-variable":nil)&&$truthy(self.observer_state)?($truthy(null!=($c=self.observer_peers)&&$c!==nil?"instance-variable":nil)&&$send(self.observer_peers,"each",[],(function(k,v){return null==k&&(k=nil),null==v&&(v=nil),$send(k,"send",[v].concat($to_a(arg)))}),2),self.observer_state=!1):nil}),-1)}($nesting[0],$nesting)};
diff --git a/opal/master/observer.min.js.gz b/opal/master/observer.min.js.gz
index 1efc1529..c616c990 100644
Binary files a/opal/master/observer.min.js.gz and b/opal/master/observer.min.js.gz differ
diff --git a/opal/master/opal-builder.js b/opal/master/opal-builder.js
index 90022b32..69fa0f68 100644
--- a/opal/master/opal-builder.js
+++ b/opal/master/opal-builder.js
@@ -1,39 +1,31 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/regexp_anchors"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module;
+Opal.modules["opal/regexp_anchors"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $const_set = Opal.const_set;
 
-  Opal.add_stubs(['$new']);
+  Opal.add_stubs('new');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Opal');
 
-    var $nesting = [self].concat($parent_nesting);
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
-    Opal.const_set($nesting[0], 'REGEXP_START', "^");
-    Opal.const_set($nesting[0], 'REGEXP_END', "$");
-    Opal.const_set($nesting[0], 'FORBIDDEN_STARTING_IDENTIFIER_CHARS', "\\u0001-\\u002F\\u003A-\\u0040\\u005B-\\u005E\\u0060\\u007B-\\u007F");
-    Opal.const_set($nesting[0], 'FORBIDDEN_ENDING_IDENTIFIER_CHARS', "\\u0001-\\u0020\\u0022-\\u002F\\u003A-\\u003E\\u0040\\u005B-\\u005E\\u0060\\u007B-\\u007F");
-    Opal.const_set($nesting[0], 'INLINE_IDENTIFIER_REGEXP', $$($nesting, 'Regexp').$new("" + "[^" + ($$($nesting, 'FORBIDDEN_STARTING_IDENTIFIER_CHARS')) + "]*[^" + ($$($nesting, 'FORBIDDEN_ENDING_IDENTIFIER_CHARS')) + "]"));
-    Opal.const_set($nesting[0], 'FORBIDDEN_CONST_NAME_CHARS', "\\u0001-\\u0020\\u0021-\\u002F\\u003B-\\u003F\\u0040\\u005B-\\u005E\\u0060\\u007B-\\u007F");
-    return Opal.const_set($nesting[0], 'CONST_NAME_REGEXP', $$($nesting, 'Regexp').$new("" + ($$($nesting, 'REGEXP_START')) + "(::)?[A-Z][^" + ($$($nesting, 'FORBIDDEN_CONST_NAME_CHARS')) + "]*" + ($$($nesting, 'REGEXP_END'))));
+    $const_set(self, 'REGEXP_START', "^");
+    $const_set(self, 'REGEXP_END', "$");
+    $const_set(self, 'FORBIDDEN_STARTING_IDENTIFIER_CHARS', "\\u0001-\\u002F\\u003A-\\u0040\\u005B-\\u005E\\u0060\\u007B-\\u007F");
+    $const_set(self, 'FORBIDDEN_ENDING_IDENTIFIER_CHARS', "\\u0001-\\u0020\\u0022-\\u002F\\u003A-\\u003E\\u0040\\u005B-\\u005E\\u0060\\u007B-\\u007F");
+    $const_set(self, 'INLINE_IDENTIFIER_REGEXP', $$('Regexp').$new("[^" + ($$$(self, 'FORBIDDEN_STARTING_IDENTIFIER_CHARS')) + "]*[^" + ($$$(self, 'FORBIDDEN_ENDING_IDENTIFIER_CHARS')) + "]"));
+    $const_set(self, 'FORBIDDEN_CONST_NAME_CHARS', "\\u0001-\\u0020\\u0021-\\u002F\\u003B-\\u003F\\u0040\\u005B-\\u005E\\u0060\\u007B-\\u007F");
+    return $const_set(self, 'CONST_NAME_REGEXP', $$('Regexp').$new("" + ($$$(self, 'REGEXP_START')) + "(::)?[A-Z][^" + ($$$(self, 'FORBIDDEN_CONST_NAME_CHARS')) + "]*" + ($$$(self, 'REGEXP_END'))));
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/comparable"] = function(Opal) {
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $falsy = Opal.falsy, $module = Opal.module, $truthy = Opal.truthy;
-
-  Opal.add_stubs(['$>', '$<', '$===', '$raise', '$class', '$<=>', '$equal?']);
-  return (function($base, $parent_nesting) {
+Opal.modules["corelib/comparable"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var nil = Opal.nil, $$$ = Opal.$$$, $truthy = Opal.truthy, $module = Opal.module, $rb_gt = Opal.rb_gt, $rb_lt = Opal.rb_lt, $eqeqeq = Opal.eqeqeq, $Kernel = Opal.Kernel, $def = Opal.def;
+
+  Opal.add_stubs('>,<,===,raise,class,<=>,equal?');
+  return (function($base) {
     var self = $module($base, 'Comparable');
 
-    var $nesting = [self].concat($parent_nesting), $Comparable_$eq_eq$1, $Comparable_$gt$2, $Comparable_$gt_eq$3, $Comparable_$lt$4, $Comparable_$lt_eq$5, $Comparable_between$ques$6, $Comparable_clamp$7, $case = nil;
+    var $ret_or_1 = nil;
 
     
     
@@ -47,25 +39,24 @@ Opal.modules["corelib/comparable"] = function(Opal) {
 
     function fail_comparison(lhs, rhs) {
       var class_name;
-      (function() {$case = rhs;
-    if (nil['$===']($case) || true['$===']($case) || false['$===']($case) || $$($nesting, 'Integer')['$===']($case) || $$($nesting, 'Float')['$===']($case)) {return class_name = rhs.$inspect();}
-    else {return class_name = rhs.$$class;}})()
-      self.$raise($$($nesting, 'ArgumentError'), "" + "comparison of " + ((lhs).$class()) + " with " + (class_name) + " failed")
+      (($eqeqeq(nil, ($ret_or_1 = rhs)) || (($eqeqeq(true, $ret_or_1) || (($eqeqeq(false, $ret_or_1) || (($eqeqeq($$$('Integer'), $ret_or_1) || ($eqeqeq($$$('Float'), $ret_or_1))))))))) ? (class_name = rhs.$inspect()) : (class_name = rhs.$$class))
+      $Kernel.$raise($$$('ArgumentError'), "comparison of " + ((lhs).$class()) + " with " + (class_name) + " failed")
     }
 
     function cmp_or_fail(lhs, rhs) {
       var cmp = (lhs)['$<=>'](rhs);
-      if ($falsy(cmp)) fail_comparison(lhs, rhs);
+      if (!$truthy(cmp)) fail_comparison(lhs, rhs);
       return normalize(cmp);
     }
   ;
     
-    Opal.def(self, '$==', $Comparable_$eq_eq$1 = function(other) {
+    $def(self, '$==', function $Comparable_$eq_eq$1(other) {
       var self = this, cmp = nil;
 
       
       if ($truthy(self['$equal?'](other))) {
-        return true};
+        return true
+      };
       
       if (self["$<=>"] == Opal.Kernel["$<=>"]) {
         return false;
@@ -77,55 +68,54 @@ Opal.modules["corelib/comparable"] = function(Opal) {
         return false;
       }
     ;
-      if ($truthy((cmp = self['$<=>'](other)))) {
-      } else {
+      if (!$truthy((cmp = self['$<=>'](other)))) {
         return false
       };
       return normalize(cmp) == 0;;
-    }, $Comparable_$eq_eq$1.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$>', $Comparable_$gt$2 = function(other) {
+    $def(self, '$>', function $Comparable_$gt$2(other) {
       var self = this;
 
       return cmp_or_fail(self, other) > 0;
-    }, $Comparable_$gt$2.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$>=', $Comparable_$gt_eq$3 = function(other) {
+    $def(self, '$>=', function $Comparable_$gt_eq$3(other) {
       var self = this;
 
       return cmp_or_fail(self, other) >= 0;
-    }, $Comparable_$gt_eq$3.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$<', $Comparable_$lt$4 = function(other) {
+    $def(self, '$<', function $Comparable_$lt$4(other) {
       var self = this;
 
       return cmp_or_fail(self, other) < 0;
-    }, $Comparable_$lt$4.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$<=', $Comparable_$lt_eq$5 = function(other) {
+    $def(self, '$<=', function $Comparable_$lt_eq$5(other) {
       var self = this;
 
       return cmp_or_fail(self, other) <= 0;
-    }, $Comparable_$lt_eq$5.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$between?', $Comparable_between$ques$6 = function(min, max) {
+    $def(self, '$between?', function $Comparable_between$ques$6(min, max) {
       var self = this;
 
       
       if ($rb_lt(self, min)) {
-        return false};
+        return false
+      };
       if ($rb_gt(self, max)) {
-        return false};
+        return false
+      };
       return true;
-    }, $Comparable_between$ques$6.$$arity = 2);
-    return (Opal.def(self, '$clamp', $Comparable_clamp$7 = function $$clamp(min, max) {
+    }, 2);
+    return $def(self, '$clamp', function $$clamp(min, max) {
       var self = this;
 
       
       
-      if (max == null) {
-        max = nil;
-      };
+      if (max == null) max = nil;;
       
       var c, excl;
 
@@ -134,7 +124,7 @@ Opal.modules["corelib/comparable"] = function(Opal) {
         // provide a single Range argument instead of 2 Comparables.
 
         if (!Opal.is_a(min, Opal.Range)) {
-          self.$raise($$($nesting, 'TypeError'), "" + "wrong argument type " + (min.$class()) + " (expected Range)")
+          $Kernel.$raise($$$('TypeError'), "wrong argument type " + (min.$class()) + " (expected Range)")
         }
 
         excl = min.excl;
@@ -142,12 +132,12 @@ Opal.modules["corelib/comparable"] = function(Opal) {
         min = min.begin;
 
         if (max !== nil && excl) {
-          self.$raise($$($nesting, 'ArgumentError'), "cannot clamp with an exclusive range")
+          $Kernel.$raise($$$('ArgumentError'), "cannot clamp with an exclusive range")
         }
       }
 
       if (min !== nil && max !== nil && cmp_or_fail(min, max) > 0) {
-        self.$raise($$($nesting, 'ArgumentError'), "min argument must be smaller than max argument")
+        $Kernel.$raise($$$('ArgumentError'), "min argument must be smaller than max argument")
       }
 
       if (min !== nil) {
@@ -165,156 +155,153 @@ Opal.modules["corelib/comparable"] = function(Opal) {
 
       return self;
     ;
-    }, $Comparable_clamp$7.$$arity = -2), nil) && 'clamp';
-  })($nesting[0], $nesting)
+    }, -2);
+  })('::')
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["pathname"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send, $alias = Opal.alias, $module = Opal.module;
+Opal.modules["pathname"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $const_set = Opal.const_set, $regexp = Opal.regexp, $eqeqeq = Opal.eqeqeq, $truthy = Opal.truthy, $eqeq = Opal.eqeq, $def = Opal.def, $defs = Opal.defs, $to_ary = Opal.to_ary, $send = Opal.send, $to_a = Opal.to_a, $neqeq = Opal.neqeq, $rb_plus = Opal.rb_plus, $not = Opal.not, $alias = Opal.alias, $module = Opal.module;
 
-  Opal.add_stubs(['$require', '$include', '$quote', '$===', '$to_s', '$path', '$respond_to?', '$to_path', '$is_a?', '$nil?', '$raise', '$class', '$==', '$attr_reader', '$!', '$relative?', '$chop_basename', '$basename', '$=~', '$new', '$source', '$[]', '$rindex', '$sub', '$absolute?', '$expand_path', '$plus', '$unshift', '$length', '$!=', '$empty?', '$first', '$shift', '$+', '$join', '$dirname', '$pop', '$reverse_each', '$directory?', '$extname', '$<=>', '$nonzero?', '$proc', '$casecmp', '$cleanpath', '$inspect', '$include?', '$fill', '$map', '$entries']);
+  Opal.add_stubs('require,include,quote,===,to_s,path,respond_to?,to_path,is_a?,nil?,raise,class,==,new,pwd,attr_reader,!,relative?,chop_basename,basename,=~,source,[],rindex,sub,absolute?,expand_path,plus,unshift,length,!=,empty?,first,shift,+,join,dirname,pop,reverse_each,directory?,extname,<=>,nonzero?,proc,casecmp,cleanpath,inspect,include?,fill,map,entries');
   
   self.$require("corelib/comparable");
   (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Pathname');
 
-    var $nesting = [self].concat($parent_nesting), $Pathname_initialize$1, $Pathname_$eq_eq$2, $Pathname_absolute$ques$3, $Pathname_relative$ques$4, $Pathname_chop_basename$5, $Pathname_root$ques$6, $Pathname_parent$7, $Pathname_sub$8, $Pathname_cleanpath$9, $Pathname_to_path$10, $Pathname_hash$11, $Pathname_expand_path$12, $Pathname_$plus$13, $Pathname_plus$14, $Pathname_join$15, $Pathname_split$17, $Pathname_dirname$18, $Pathname_basename$19, $Pathname_directory$ques$20, $Pathname_extname$21, $Pathname_$lt_eq_gt$22, $Pathname$23, $Pathname$24, $Pathname_relative_path_from$25, $Pathname_entries$26;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-    self.$$prototype.path = nil;
+    $proto.path = nil;
     
-    self.$include($$($nesting, 'Comparable'));
-    Opal.const_set($nesting[0], 'SEPARATOR_PAT', Opal.regexp([$$($nesting, 'Regexp').$quote($$$($$($nesting, 'File'), 'SEPARATOR'))]));
+    self.$include($$('Comparable'));
+    $const_set($nesting[0], 'SEPARATOR_PAT', $regexp([$$('Regexp').$quote($$$($$('File'), 'SEPARATOR'))]));
     
-    Opal.def(self, '$initialize', $Pathname_initialize$1 = function $$initialize(path) {
+    $def(self, '$initialize', function $$initialize(path) {
       var self = this;
 
       
-      if ($truthy($$($nesting, 'Pathname')['$==='](path))) {
+      if ($eqeqeq($$('Pathname'), path)) {
         self.path = path.$path().$to_s()
       } else if ($truthy(path['$respond_to?']("to_path"))) {
         self.path = path.$to_path()
-      } else if ($truthy(path['$is_a?']($$($nesting, 'String')))) {
+      } else if ($truthy(path['$is_a?']($$('String')))) {
         self.path = path
       } else if ($truthy(path['$nil?']())) {
-        self.$raise($$($nesting, 'TypeError'), "no implicit conversion of nil into String")
+        self.$raise($$('TypeError'), "no implicit conversion of nil into String")
       } else {
-        self.$raise($$($nesting, 'TypeError'), "" + "no implicit conversion of " + (path.$class()) + " into String")
+        self.$raise($$('TypeError'), "no implicit conversion of " + (path.$class()) + " into String")
       };
-      if (self.path['$==']("\u0000")) {
-        return self.$raise($$($nesting, 'ArgumentError'))
+      if ($eqeq(self.path, "\u0000")) {
+        return self.$raise($$('ArgumentError'))
       } else {
         return nil
       };
-    }, $Pathname_initialize$1.$$arity = 1);
+    }, 1);
+    $defs(self, '$pwd', function $$pwd() {
+      var self = this;
+
+      return self.$new($$('Dir').$pwd())
+    }, 0);
     self.$attr_reader("path");
     
-    Opal.def(self, '$==', $Pathname_$eq_eq$2 = function(other) {
+    $def(self, '$==', function $Pathname_$eq_eq$1(other) {
       var self = this;
 
       return other.$path()['$=='](self.path)
-    }, $Pathname_$eq_eq$2.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$absolute?', $Pathname_absolute$ques$3 = function() {
+    $def(self, '$absolute?', function $Pathname_absolute$ques$2() {
       var self = this;
 
       return self['$relative?']()['$!']()
-    }, $Pathname_absolute$ques$3.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$relative?', $Pathname_relative$ques$4 = function() {
+    $def(self, '$relative?', function $Pathname_relative$ques$3() {
       var $a, $b, $c, self = this, path = nil, r = nil;
 
       
       path = self.path;
       while ($truthy((r = self.$chop_basename(path)))) {
-        $c = r, $b = Opal.to_ary($c), (path = ($b[0] == null ? nil : $b[0])), $c
+        $c = r, $b = $to_ary($c), (path = ($b[0] == null ? nil : $b[0])), $c
       };
       return path['$==']("");
-    }, $Pathname_relative$ques$4.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$chop_basename', $Pathname_chop_basename$5 = function $$chop_basename(path) {
-      var self = this, base = nil;
+    $def(self, '$chop_basename', function $$chop_basename(path) {
+      var base = nil;
 
       
-      base = $$($nesting, 'File').$basename(path);
-      if ($truthy($$($nesting, 'Regexp').$new("" + "^" + ($$$($$($nesting, 'Pathname'), 'SEPARATOR_PAT').$source()) + "?$")['$=~'](base))) {
+      base = $$('File').$basename(path);
+      if ($truthy($$('Regexp').$new("^" + ($$$($$('Pathname'), 'SEPARATOR_PAT').$source()) + "?$")['$=~'](base))) {
         return nil
       } else {
         return [path['$[]'](0, path.$rindex(base)), base]
       };
-    }, $Pathname_chop_basename$5.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$root?', $Pathname_root$ques$6 = function() {
+    $def(self, '$root?', function $Pathname_root$ques$4() {
       var self = this;
 
       return self.path['$==']("/")
-    }, $Pathname_root$ques$6.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$parent', $Pathname_parent$7 = function $$parent() {
+    $def(self, '$parent', function $$parent() {
       var self = this, new_path = nil;
 
       
       new_path = self.path.$sub(/\/([^\/]+\/?$)/, "");
-      if (new_path['$==']("")) {
-        new_path = (function() {if ($truthy(self['$absolute?']())) {
-          return "/"
-        } else {
-          return "."
-        }; return nil; })()};
-      return $$($nesting, 'Pathname').$new(new_path);
-    }, $Pathname_parent$7.$$arity = 0);
+      if ($eqeq(new_path, "")) {
+        new_path = ($truthy(self['$absolute?']()) ? ("/") : ("."))
+      };
+      return $$('Pathname').$new(new_path);
+    }, 0);
     
-    Opal.def(self, '$sub', $Pathname_sub$8 = function $$sub($a) {
+    $def(self, '$sub', function $$sub($a) {
       var $post_args, args, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
-      return $$($nesting, 'Pathname').$new($send(self.path, 'sub', Opal.to_a(args)));
-    }, $Pathname_sub$8.$$arity = -1);
+      return $$('Pathname').$new($send(self.path, 'sub', $to_a(args)));
+    }, -1);
     
-    Opal.def(self, '$cleanpath', $Pathname_cleanpath$9 = function $$cleanpath() {
+    $def(self, '$cleanpath', function $$cleanpath() {
       var self = this;
 
       return Opal.normalize(self.path)
-    }, $Pathname_cleanpath$9.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_path', $Pathname_to_path$10 = function $$to_path() {
+    $def(self, '$to_path', function $$to_path() {
       var self = this;
 
       return self.path
-    }, $Pathname_to_path$10.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$hash', $Pathname_hash$11 = function $$hash() {
+    $def(self, '$hash', function $$hash() {
       var self = this;
 
       return self.path
-    }, $Pathname_hash$11.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$expand_path', $Pathname_expand_path$12 = function $$expand_path() {
+    $def(self, '$expand_path', function $$expand_path() {
       var self = this;
 
-      return $$($nesting, 'Pathname').$new($$($nesting, 'File').$expand_path(self.path))
-    }, $Pathname_expand_path$12.$$arity = 0);
+      return $$('Pathname').$new($$('File').$expand_path(self.path))
+    }, 0);
     
-    Opal.def(self, '$+', $Pathname_$plus$13 = function(other) {
+    $def(self, '$+', function $Pathname_$plus$5(other) {
       var self = this;
 
       
-      if ($truthy($$($nesting, 'Pathname')['$==='](other))) {
-      } else {
-        other = $$($nesting, 'Pathname').$new(other)
+      if (!$eqeqeq($$('Pathname'), other)) {
+        other = $$('Pathname').$new(other)
       };
-      return $$($nesting, 'Pathname').$new(self.$plus(self.path, other.$to_s()));
-    }, $Pathname_$plus$13.$$arity = 1);
+      return $$('Pathname').$new(self.$plus(self.path, other.$to_s()));
+    }, 1);
     
-    Opal.def(self, '$plus', $Pathname_plus$14 = function $$plus(path1, path2) {
-      var $a, $b, $c, self = this, prefix2 = nil, index_list2 = nil, basename_list2 = nil, r2 = nil, basename2 = nil, prefix1 = nil, $ret_or_1 = nil, r1 = nil, basename1 = nil, $ret_or_2 = nil, $ret_or_3 = nil, $ret_or_4 = nil, $ret_or_5 = nil, suffix2 = nil;
+    $def(self, '$plus', function $$plus(path1, path2) {
+      var $a, $b, $c, self = this, prefix2 = nil, index_list2 = nil, basename_list2 = nil, r2 = nil, basename2 = nil, prefix1 = nil, $ret_or_1 = nil, r1 = nil, basename1 = nil, suffix2 = nil;
 
       
       prefix2 = path2;
@@ -322,184 +309,146 @@ Opal.modules["pathname"] = function(Opal) {
       basename_list2 = [];
       while ($truthy((r2 = self.$chop_basename(prefix2)))) {
         
-        $c = r2, $b = Opal.to_ary($c), (prefix2 = ($b[0] == null ? nil : $b[0])), (basename2 = ($b[1] == null ? nil : $b[1])), $c;
+        $c = r2, $b = $to_ary($c), (prefix2 = ($b[0] == null ? nil : $b[0])), (basename2 = ($b[1] == null ? nil : $b[1])), $c;
         index_list2.$unshift(prefix2.$length());
         basename_list2.$unshift(basename2);
       };
-      if ($truthy(prefix2['$!='](""))) {
-        return path2};
+      if ($neqeq(prefix2, "")) {
+        return path2
+      };
       prefix1 = path1;
       while ($truthy(true)) {
         
-        while ($truthy((function() {if ($truthy(($ret_or_1 = basename_list2['$empty?']()['$!']()))) {
-          return basename_list2.$first()['$=='](".")
-        } else {
-          return $ret_or_1
-        }; return nil; })())) {
+        while ($truthy(($truthy(($ret_or_1 = basename_list2['$empty?']()['$!']())) ? (basename_list2.$first()['$=='](".")) : ($ret_or_1)))) {
           
           index_list2.$shift();
           basename_list2.$shift();
         };
-        if ($truthy((r1 = self.$chop_basename(prefix1)))) {
-        } else {
+        if (!$truthy((r1 = self.$chop_basename(prefix1)))) {
           break;
         };
-        $c = r1, $b = Opal.to_ary($c), (prefix1 = ($b[0] == null ? nil : $b[0])), (basename1 = ($b[1] == null ? nil : $b[1])), $c;
-        if (basename1['$=='](".")) {
-          continue;};
-        if ($truthy((function() {if ($truthy(($ret_or_2 = (function() {if ($truthy(($ret_or_3 = basename1['$==']("..")))) {
-          return $ret_or_3
-        } else {
-          return basename_list2['$empty?']()
-        }; return nil; })()))) {
-          return $ret_or_2
-        } else {
-          return basename_list2.$first()['$!=']("..")
-        }; return nil; })())) {
+        $c = r1, $b = $to_ary($c), (prefix1 = ($b[0] == null ? nil : $b[0])), (basename1 = ($b[1] == null ? nil : $b[1])), $c;
+        if ($eqeq(basename1, ".")) {
+          continue;
+        };
+        if ((($eqeq(basename1, "..") || ($truthy(basename_list2['$empty?']()))) || ($neqeq(basename_list2.$first(), "..")))) {
           
           prefix1 = $rb_plus(prefix1, basename1);
-          break;;};
+          break;;
+        };
         index_list2.$shift();
         basename_list2.$shift();
       };
       r1 = self.$chop_basename(prefix1);
-      if ($truthy((function() {if ($truthy(($ret_or_4 = r1['$!']()))) {
-        return Opal.regexp([$$($nesting, 'SEPARATOR_PAT')])['$=~']($$($nesting, 'File').$basename(prefix1))
-      } else {
-        return $ret_or_4
-      }; return nil; })())) {
-        while ($truthy((function() {if ($truthy(($ret_or_5 = basename_list2['$empty?']()['$!']()))) {
-          return basename_list2.$first()['$==']("..")
-        } else {
-          return $ret_or_5
-        }; return nil; })())) {
+      if (($not(r1) && ($truthy($regexp([$$('SEPARATOR_PAT')])['$=~']($$('File').$basename(prefix1)))))) {
+        while ($truthy(($truthy(($ret_or_1 = basename_list2['$empty?']()['$!']())) ? (basename_list2.$first()['$==']("..")) : ($ret_or_1)))) {
           
           index_list2.$shift();
           basename_list2.$shift();
-        }};
-      if ($truthy(basename_list2['$empty?']()['$!']())) {
+        }
+      };
+      if ($not(basename_list2['$empty?']())) {
         
         suffix2 = path2['$[]'](Opal.Range.$new(index_list2.$first(), -1, false));
         if ($truthy(r1)) {
-          return $$($nesting, 'File').$join(prefix1, suffix2)
+          return $$('File').$join(prefix1, suffix2)
         } else {
           return $rb_plus(prefix1, suffix2)
         };
       } else if ($truthy(r1)) {
         return prefix1
       } else {
-        return $$($nesting, 'File').$dirname(prefix1)
+        return $$('File').$dirname(prefix1)
       };
-    }, $Pathname_plus$14.$$arity = 2);
+    }, 2);
     
-    Opal.def(self, '$join', $Pathname_join$15 = function $$join($a) {try {
+    $def(self, '$join', function $$join($a) {try {
 
-      var $post_args, args, $$16, self = this, result = nil;
+      var $post_args, args, self = this, result = nil;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
       if ($truthy(args['$empty?']())) {
-        return self};
+        return self
+      };
       result = args.$pop();
-      if ($truthy($$($nesting, 'Pathname')['$==='](result))) {
-      } else {
-        result = $$($nesting, 'Pathname').$new(result)
+      if (!$eqeqeq($$('Pathname'), result)) {
+        result = $$('Pathname').$new(result)
       };
       if ($truthy(result['$absolute?']())) {
-        return result};
-      $send(args, 'reverse_each', [], ($$16 = function(arg){var self = $$16.$$s == null ? this : $$16.$$s;
-
+        return result
+      };
+      $send(args, 'reverse_each', [], function $$6(arg){
         
         
-        if (arg == null) {
-          arg = nil;
-        };
-        if ($truthy($$($nesting, 'Pathname')['$==='](arg))) {
-        } else {
-          arg = $$($nesting, 'Pathname').$new(arg)
+        if (arg == null) arg = nil;;
+        if (!$eqeqeq($$('Pathname'), arg)) {
+          arg = $$('Pathname').$new(arg)
         };
         result = $rb_plus(arg, result);
         if ($truthy(result['$absolute?']())) {
           Opal.ret(result)
         } else {
           return nil
-        };}, $$16.$$s = self, $$16.$$arity = 1, $$16));
+        };}, 1);
       return $rb_plus(self, result);
       } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
-    }, $Pathname_join$15.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$split', $Pathname_split$17 = function $$split() {
+    $def(self, '$split', function $$split() {
       var self = this;
 
       return [self.$dirname(), self.$basename()]
-    }, $Pathname_split$17.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$dirname', $Pathname_dirname$18 = function $$dirname() {
+    $def(self, '$dirname', function $$dirname() {
       var self = this;
 
-      return $$($nesting, 'Pathname').$new($$($nesting, 'File').$dirname(self.path))
-    }, $Pathname_dirname$18.$$arity = 0);
+      return $$('Pathname').$new($$('File').$dirname(self.path))
+    }, 0);
     
-    Opal.def(self, '$basename', $Pathname_basename$19 = function $$basename() {
+    $def(self, '$basename', function $$basename() {
       var self = this;
 
-      return $$($nesting, 'Pathname').$new($$($nesting, 'File').$basename(self.path))
-    }, $Pathname_basename$19.$$arity = 0);
+      return $$('Pathname').$new($$('File').$basename(self.path))
+    }, 0);
     
-    Opal.def(self, '$directory?', $Pathname_directory$ques$20 = function() {
+    $def(self, '$directory?', function $Pathname_directory$ques$7() {
       var self = this;
 
-      return $$($nesting, 'File')['$directory?'](self.path)
-    }, $Pathname_directory$ques$20.$$arity = 0);
+      return $$('File')['$directory?'](self.path)
+    }, 0);
     
-    Opal.def(self, '$extname', $Pathname_extname$21 = function $$extname() {
+    $def(self, '$extname', function $$extname() {
       var self = this;
 
-      return $$($nesting, 'File').$extname(self.path)
-    }, $Pathname_extname$21.$$arity = 0);
+      return $$('File').$extname(self.path)
+    }, 0);
     
-    Opal.def(self, '$<=>', $Pathname_$lt_eq_gt$22 = function(other) {
+    $def(self, '$<=>', function $Pathname_$lt_eq_gt$8(other) {
       var self = this;
 
       return self.$path()['$<=>'](other.$path())
-    }, $Pathname_$lt_eq_gt$22.$$arity = 1);
-    $alias(self, "eql?", "==");
-    $alias(self, "===", "==");
-    $alias(self, "to_str", "to_path");
-    $alias(self, "to_s", "to_path");
-    Opal.const_set($nesting[0], 'SAME_PATHS', (function() {if ($truthy($$$($$($nesting, 'File'), 'FNM_SYSCASE')['$nonzero?']())) {
-      return $send(self, 'proc', [], ($Pathname$23 = function(a, b){var self = $Pathname$23.$$s == null ? this : $Pathname$23.$$s;
-
-        
-        
-        if (a == null) {
-          a = nil;
-        };
-        
-        if (b == null) {
-          b = nil;
-        };
-        return a.$casecmp(b)['$=='](0);}, $Pathname$23.$$s = self, $Pathname$23.$$arity = 2, $Pathname$23))
-    } else {
-      return $send(self, 'proc', [], ($Pathname$24 = function(a, b){var self = $Pathname$24.$$s == null ? this : $Pathname$24.$$s;
-
-        
-        
-        if (a == null) {
-          a = nil;
-        };
-        
-        if (b == null) {
-          b = nil;
-        };
-        return a['$=='](b);}, $Pathname$24.$$s = self, $Pathname$24.$$arity = 2, $Pathname$24))
-    }; return nil; })());
+    }, 1);
+    $const_set($nesting[0], 'SAME_PATHS', ($truthy($$$($$('File'), 'FNM_SYSCASE')['$nonzero?']()) ? ($send(self, 'proc', [], function $Pathname$9(a, b){
+      
+      
+      if (a == null) a = nil;;
+      
+      if (b == null) b = nil;;
+      return a.$casecmp(b)['$=='](0);}, 2)) : ($send(self, 'proc', [], function $Pathname$10(a, b){
+      
+      
+      if (a == null) a = nil;;
+      
+      if (b == null) b = nil;;
+      return a['$=='](b);}, 2))));
     
-    Opal.def(self, '$relative_path_from', $Pathname_relative_path_from$25 = function $$relative_path_from(base_directory) {
-      var $a, $b, $c, self = this, dest_directory = nil, dest_prefix = nil, dest_names = nil, r = nil, basename = nil, base_prefix = nil, base_names = nil, $ret_or_6 = nil, $ret_or_7 = nil, relpath_names = nil;
+    $def(self, '$relative_path_from', function $$relative_path_from(base_directory) {
+      var $a, $b, $c, self = this, dest_directory = nil, dest_prefix = nil, dest_names = nil, r = nil, basename = nil, base_prefix = nil, base_names = nil, $ret_or_1 = nil, $ret_or_2 = nil, relpath_names = nil;
 
       
       dest_directory = self.$cleanpath().$to_s();
@@ -508,82 +457,71 @@ Opal.modules["pathname"] = function(Opal) {
       dest_names = [];
       while ($truthy((r = self.$chop_basename(dest_prefix)))) {
         
-        $c = r, $b = Opal.to_ary($c), (dest_prefix = ($b[0] == null ? nil : $b[0])), (basename = ($b[1] == null ? nil : $b[1])), $c;
-        if ($truthy(basename['$!=']("."))) {
-          dest_names.$unshift(basename)};
+        $c = r, $b = $to_ary($c), (dest_prefix = ($b[0] == null ? nil : $b[0])), (basename = ($b[1] == null ? nil : $b[1])), $c;
+        if ($neqeq(basename, ".")) {
+          dest_names.$unshift(basename)
+        };
       };
       base_prefix = base_directory;
       base_names = [];
       while ($truthy((r = self.$chop_basename(base_prefix)))) {
         
-        $c = r, $b = Opal.to_ary($c), (base_prefix = ($b[0] == null ? nil : $b[0])), (basename = ($b[1] == null ? nil : $b[1])), $c;
-        if ($truthy(basename['$!=']("."))) {
-          base_names.$unshift(basename)};
+        $c = r, $b = $to_ary($c), (base_prefix = ($b[0] == null ? nil : $b[0])), (basename = ($b[1] == null ? nil : $b[1])), $c;
+        if ($neqeq(basename, ".")) {
+          base_names.$unshift(basename)
+        };
       };
-      if ($truthy($$($nesting, 'SAME_PATHS')['$[]'](dest_prefix, base_prefix))) {
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "" + "different prefix: " + (dest_prefix.$inspect()) + " and " + (base_directory.$inspect()))
+      if (!$truthy($$('SAME_PATHS')['$[]'](dest_prefix, base_prefix))) {
+        self.$raise($$('ArgumentError'), "different prefix: " + (dest_prefix.$inspect()) + " and " + (base_directory.$inspect()))
       };
-      while ($truthy((function() {if ($truthy(($ret_or_6 = (function() {if ($truthy(($ret_or_7 = dest_names['$empty?']()['$!']()))) {
-        return base_names['$empty?']()['$!']()
-      } else {
-        return $ret_or_7
-      }; return nil; })()))) {
-        return $$($nesting, 'SAME_PATHS')['$[]'](dest_names.$first(), base_names.$first())
-      } else {
-        return $ret_or_6
-      }; return nil; })())) {
+      while ($truthy(($truthy(($ret_or_1 = ($truthy(($ret_or_2 = dest_names['$empty?']()['$!']())) ? (base_names['$empty?']()['$!']()) : ($ret_or_2)))) ? ($$('SAME_PATHS')['$[]'](dest_names.$first(), base_names.$first())) : ($ret_or_1)))) {
         
         dest_names.$shift();
         base_names.$shift();
       };
       if ($truthy(base_names['$include?'](".."))) {
-        self.$raise($$($nesting, 'ArgumentError'), "" + "base_directory has ..: " + (base_directory.$inspect()))};
+        self.$raise($$('ArgumentError'), "base_directory has ..: " + (base_directory.$inspect()))
+      };
       base_names.$fill("..");
       relpath_names = $rb_plus(base_names, dest_names);
       if ($truthy(relpath_names['$empty?']())) {
-        return $$($nesting, 'Pathname').$new(".")
+        return $$('Pathname').$new(".")
       } else {
-        return $$($nesting, 'Pathname').$new($send($$($nesting, 'File'), 'join', Opal.to_a(relpath_names)))
+        return $$('Pathname').$new($send($$('File'), 'join', $to_a(relpath_names)))
       };
-    }, $Pathname_relative_path_from$25.$$arity = 1);
-    return (Opal.def(self, '$entries', $Pathname_entries$26 = function $$entries() {
-      var $$27, self = this;
+    }, 1);
+    
+    $def(self, '$entries', function $$entries() {
+      var self = this;
 
-      return $send($$($nesting, 'Dir').$entries(self.path), 'map', [], ($$27 = function(f){var self = $$27.$$s == null ? this : $$27.$$s;
+      return $send($$('Dir').$entries(self.path), 'map', [], function $$11(f){var self = $$11.$$s == null ? this : $$11.$$s;
 
         
         
-        if (f == null) {
-          f = nil;
-        };
-        return self.$class().$new(f);}, $$27.$$s = self, $$27.$$arity = 1, $$27))
-    }, $Pathname_entries$26.$$arity = 0), nil) && 'entries';
+        if (f == null) f = nil;;
+        return self.$class().$new(f);}, {$$arity: 1, $$s: self})
+    }, 0);
+    $alias(self, "===", "==");
+    $alias(self, "eql?", "==");
+    $alias(self, "to_s", "to_path");
+    return $alias(self, "to_str", "to_path");
   })($nesting[0], null, $nesting);
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Kernel');
 
-    var $nesting = [self].concat($parent_nesting), $Kernel_Pathname$28;
-
-    return (Opal.def(self, '$Pathname', $Kernel_Pathname$28 = function $$Pathname(path) {
-      var self = this;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return $$($nesting, 'Pathname').$new(path)
-    }, $Kernel_Pathname$28.$$arity = 1), nil) && 'Pathname'
+    return $def(self, '$Pathname', function $$Pathname(path) {
+      
+      return $$('Pathname').$new(path)
+    }, 1)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/hike"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $hash2 = Opal.hash2, $truthy = Opal.truthy;
-
-  Opal.add_stubs(['$require', '$attr_reader', '$freeze', '$dup', '$map', '$new', '$to_s', '$sub', '$=~', '$find_in_base_path', '$find_in_paths', '$[]', '$directory?', '$sort', '$reject', '$entries', '$[]=', '$-', '$key?', '$exist?', '$stat', '$protected', '$is_a?', '$last', '$pop', '$split', '$each', '$match', '$join', '$to_proc', '$paths_contain?', '$pattern_for', '$select', '$sort_matches', '$file?', '$any?', '$paths', '$==', '$length', '$build_pattern_for', '$extensions', '$escape', '$sort_by', '$scan', '$inject', '$index', '$+', '$expand_path', '$concat', '$normalize_path', '$normalize_extension', '$find', '$root', '$private', '$start_with?', '$relative?']);
+Opal.modules["opal/hike"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $hash2 = Opal.hash2, $def = Opal.def, $truthy = Opal.truthy, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $to_ary = Opal.to_ary, $regexp = Opal.regexp, $rb_plus = Opal.rb_plus;
+
+  Opal.add_stubs('require,attr_reader,freeze,dup,map,new,to_s,sub,=~,find_in_base_path,find_in_paths,[],directory?,sort,reject,entries,[]=,-,key?,exist?,stat,protected,is_a?,last,pop,split,each,match,join,to_proc,paths_contain?,pattern_for,select,sort_matches,file?,any?,paths,==,length,build_pattern_for,extensions,escape,sort_by,scan,inject,index,+,expand_path,concat,normalize_path,normalize_extension,find,root,private,start_with?,relative?');
   
   self.$require("pathname");
   return (function($base, $parent_nesting) {
@@ -600,412 +538,358 @@ Opal.modules["opal/hike"] = function(Opal) {
       (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'Index');
 
-        var $nesting = [self].concat($parent_nesting), $Index_initialize$1, $Index_root$3, $Index_index$4, $Index_find$5, $Index_entries$8, $Index_stat$10, $Index_extract_options$excl$11, $Index_find_in_paths$12, $Index_find_in_base_path$14, $Index_match$15, $Index_paths_contain$ques$18, $Index_pattern_for$20, $Index_build_pattern_for$21, $Index_sort_matches$23;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.root = self.$$prototype.entries = self.$$prototype.stats = self.$$prototype.pathnames = self.$$prototype.patterns = nil;
+        $proto.root = $proto.entries = $proto.stats = $proto.pathnames = $proto.patterns = nil;
         
         self.$attr_reader("paths");
         self.$attr_reader("extensions");
         
-        Opal.def(self, '$initialize', $Index_initialize$1 = function $$initialize(root, paths, extensions) {
-          var $$2, self = this;
+        $def(self, '$initialize', function $$initialize(root, paths, extensions) {
+          var self = this;
 
           
           self.root = root;
           self.paths = paths.$dup().$freeze();
           self.extensions = extensions.$dup().$freeze();
-          self.pathnames = $send(paths, 'map', [], ($$2 = function(path){var self = $$2.$$s == null ? this : $$2.$$s;
-
+          self.pathnames = $send(paths, 'map', [], function $$1(path){
             
             
-            if (path == null) {
-              path = nil;
-            };
-            return $$($nesting, 'Pathname').$new(path);}, $$2.$$s = self, $$2.$$arity = 1, $$2));
+            if (path == null) path = nil;;
+            return $$('Pathname').$new(path);}, 1);
           self.stats = $hash2([], {});
           self.entries = $hash2([], {});
           return (self.patterns = $hash2([], {}));
-        }, $Index_initialize$1.$$arity = 3);
+        }, 3);
         
-        Opal.def(self, '$root', $Index_root$3 = function $$root() {
+        $def(self, '$root', function $$root() {
           var self = this;
 
           return self.root.$to_s()
-        }, $Index_root$3.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$index', $Index_index$4 = function $$index() {
+        $def(self, '$index', function $$index() {
           var self = this;
 
           return self
-        }, $Index_index$4.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$find', $Index_find$5 = function $$find(logical_path) {try {
+        $def(self, '$find', function $$find(logical_path) {try {
 
-          var $$6, $$7, self = this, base_path = nil;
+          var self = this, base_path = nil;
 
           
-          base_path = $$($nesting, 'Pathname').$new(self.root);
-          logical_path = $$($nesting, 'Pathname').$new(logical_path.$sub(/^\//, ""));
+          base_path = $$('Pathname').$new(self.root);
+          logical_path = $$('Pathname').$new(logical_path.$sub(/^\//, ""));
           if ($truthy(logical_path.$to_s()['$=~'](/^\.\.?\//))) {
-            $send(self, 'find_in_base_path', [logical_path, base_path], ($$6 = function(path){var self = $$6.$$s == null ? this : $$6.$$s;
-
+            $send(self, 'find_in_base_path', [logical_path, base_path], function $$2(path){
               
               
-              if (path == null) {
-                path = nil;
-              };
-              Opal.ret(path);}, $$6.$$s = self, $$6.$$arity = 1, $$6))
+              if (path == null) path = nil;;
+              Opal.ret(path);}, 1)
           } else {
-            $send(self, 'find_in_paths', [logical_path], ($$7 = function(path){var self = $$7.$$s == null ? this : $$7.$$s;
-
+            $send(self, 'find_in_paths', [logical_path], function $$3(path){
               
               
-              if (path == null) {
-                path = nil;
-              };
-              Opal.ret(path);}, $$7.$$s = self, $$7.$$arity = 1, $$7))
+              if (path == null) path = nil;;
+              Opal.ret(path);}, 1)
           };
           return nil;
           } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
-        }, $Index_find$5.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$entries', $Index_entries$8 = function $$entries(path) {
-          var $$9, self = this, $ret_or_1 = nil, $writer = nil, pathname = nil;
+        $def(self, '$entries', function $$entries(path) {
+          var self = this, $ret_or_1 = nil, $writer = nil, pathname = nil;
 
           if ($truthy(($ret_or_1 = self.entries['$[]'](path.$to_s())))) {
             return $ret_or_1
           } else {
             
-            $writer = [path.$to_s(), ((pathname = $$($nesting, 'Pathname').$new(path)), (function() {if ($truthy(pathname['$directory?']())) {
-              return $send(pathname.$entries(), 'reject', [], ($$9 = function(entry){var self = $$9.$$s == null ? this : $$9.$$s;
-
-                
-                
-                if (entry == null) {
-                  entry = nil;
-                };
-                return entry.$to_s()['$=~'](/^\.|~$|^\#.*\#$/);}, $$9.$$s = self, $$9.$$arity = 1, $$9)).$sort()
-            } else {
-              return []
-            }; return nil; })())];
-            $send(self.entries, '[]=', Opal.to_a($writer));
+            $writer = [path.$to_s(), ((pathname = $$('Pathname').$new(path)), ($truthy(pathname['$directory?']()) ? ($send(pathname.$entries(), 'reject', [], function $$4(entry){
+              
+              
+              if (entry == null) entry = nil;;
+              return entry.$to_s()['$=~'](/^\.|~$|^\#.*\#$/);}, 1).$sort()) : ([])))];
+            $send(self.entries, '[]=', $to_a($writer));
             return $writer[$rb_minus($writer["length"], 1)];
           }
-        }, $Index_entries$8.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$stat', $Index_stat$10 = function $$stat(path) {
+        $def(self, '$stat', function $$stat(path) {
           var self = this, key = nil, $writer = nil;
 
           
           key = path.$to_s();
           if ($truthy(self.stats['$key?'](key))) {
             return self.stats['$[]'](key)
-          } else if ($truthy($$($nesting, 'File')['$exist?'](path))) {
+          } else if ($truthy($$('File')['$exist?'](path))) {
             
-            $writer = [key, $$($nesting, 'File').$stat(path)];
-            $send(self.stats, '[]=', Opal.to_a($writer));
+            $writer = [key, $$('File').$stat(path)];
+            $send(self.stats, '[]=', $to_a($writer));
             return $writer[$rb_minus($writer["length"], 1)];
           } else {
             
             $writer = [key, nil];
-            $send(self.stats, '[]=', Opal.to_a($writer));
+            $send(self.stats, '[]=', $to_a($writer));
             return $writer[$rb_minus($writer["length"], 1)];
           };
-        }, $Index_stat$10.$$arity = 1);
+        }, 1);
         self.$protected();
         
-        Opal.def(self, '$extract_options!', $Index_extract_options$excl$11 = function(arguments$) {
-          var self = this;
-
-          if ($truthy(arguments$.$last()['$is_a?']($$($nesting, 'Hash')))) {
+        $def(self, '$extract_options!', function $Index_extract_options$excl$5(arguments$) {
+          
+          if ($truthy(arguments$.$last()['$is_a?']($$('Hash')))) {
             return arguments$.$pop().$dup()
           } else {
             return $hash2([], {})
           }
-        }, $Index_extract_options$excl$11.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$find_in_paths', $Index_find_in_paths$12 = function $$find_in_paths(logical_path) {
-          var $iter = $Index_find_in_paths$12.$$p, block = $iter || nil, $a, $b, $$13, self = this, dirname = nil, basename = nil;
+        $def(self, '$find_in_paths', function $$find_in_paths(logical_path) {
+          var block = $$find_in_paths.$$p || nil, $a, $b, self = this, dirname = nil, basename = nil;
 
-          if ($iter) $Index_find_in_paths$12.$$p = null;
-          
+          delete $$find_in_paths.$$p;
           
-          if ($iter) $Index_find_in_paths$12.$$p = null;;
-          $b = logical_path.$split(), $a = Opal.to_ary($b), (dirname = ($a[0] == null ? nil : $a[0])), (basename = ($a[1] == null ? nil : $a[1])), $b;
-          return $send(self.pathnames, 'each', [], ($$13 = function(base_path){var self = $$13.$$s == null ? this : $$13.$$s;
+          ;
+          $b = logical_path.$split(), $a = $to_ary($b), (dirname = ($a[0] == null ? nil : $a[0])), (basename = ($a[1] == null ? nil : $a[1])), $b;
+          return $send(self.pathnames, 'each', [], function $$6(base_path){var self = $$6.$$s == null ? this : $$6.$$s;
 
             
             
-            if (base_path == null) {
-              base_path = nil;
-            };
-            return $send(self, 'match', [base_path.$join(dirname), basename], block.$to_proc());}, $$13.$$s = self, $$13.$$arity = 1, $$13));
-        }, $Index_find_in_paths$12.$$arity = 1);
+            if (base_path == null) base_path = nil;;
+            return $send(self, 'match', [base_path.$join(dirname), basename], block.$to_proc());}, {$$arity: 1, $$s: self});
+        }, 1);
         
-        Opal.def(self, '$find_in_base_path', $Index_find_in_base_path$14 = function $$find_in_base_path(logical_path, base_path) {
-          var $iter = $Index_find_in_base_path$14.$$p, block = $iter || nil, $a, $b, self = this, candidate = nil, dirname = nil, basename = nil;
+        $def(self, '$find_in_base_path', function $$find_in_base_path(logical_path, base_path) {
+          var block = $$find_in_base_path.$$p || nil, $a, $b, self = this, candidate = nil, dirname = nil, basename = nil;
 
-          if ($iter) $Index_find_in_base_path$14.$$p = null;
+          delete $$find_in_base_path.$$p;
           
-          
-          if ($iter) $Index_find_in_base_path$14.$$p = null;;
+          ;
           candidate = base_path.$join(logical_path);
-          $b = candidate.$split(), $a = Opal.to_ary($b), (dirname = ($a[0] == null ? nil : $a[0])), (basename = ($a[1] == null ? nil : $a[1])), $b;
+          $b = candidate.$split(), $a = $to_ary($b), (dirname = ($a[0] == null ? nil : $a[0])), (basename = ($a[1] == null ? nil : $a[1])), $b;
           if ($truthy(self['$paths_contain?'](dirname))) {
             return $send(self, 'match', [dirname, basename], block.$to_proc())
           } else {
             return nil
           };
-        }, $Index_find_in_base_path$14.$$arity = 2);
+        }, 2);
         
-        Opal.def(self, '$match', $Index_match$15 = function $$match(dirname, basename) {
-          var $$16, $$17, $iter = $Index_match$15.$$p, $yield = $iter || nil, self = this, matches = nil, pattern = nil;
+        $def(self, '$match', function $$match(dirname, basename) {
+          var $yield = $$match.$$p || nil, self = this, matches = nil, pattern = nil;
 
-          if ($iter) $Index_match$15.$$p = null;
+          delete $$match.$$p;
           
           matches = self.$entries(dirname);
           pattern = self.$pattern_for(basename);
-          matches = $send(matches, 'select', [], ($$16 = function(m){var self = $$16.$$s == null ? this : $$16.$$s;
-
+          matches = $send(matches, 'select', [], function $$7(m){
             
             
-            if (m == null) {
-              m = nil;
-            };
-            return m.$to_s()['$=~'](pattern);}, $$16.$$s = self, $$16.$$arity = 1, $$16));
-          return $send(self.$sort_matches(matches, basename), 'each', [], ($$17 = function(path){var self = $$17.$$s == null ? this : $$17.$$s, pathname = nil, stat = nil, $ret_or_2 = nil;
+            if (m == null) m = nil;;
+            return m.$to_s()['$=~'](pattern);}, 1);
+          return $send(self.$sort_matches(matches, basename), 'each', [], function $$8(path){var self = $$8.$$s == null ? this : $$8.$$s, pathname = nil, stat = nil;
 
             
             
-            if (path == null) {
-              path = nil;
-            };
+            if (path == null) path = nil;;
             pathname = dirname.$join(path);
             stat = self.$stat(pathname);
-            if ($truthy((function() {if ($truthy(($ret_or_2 = stat))) {
-              return stat['$file?']()
-            } else {
-              return $ret_or_2
-            }; return nil; })())) {
+            if (($truthy(stat) && ($truthy(stat['$file?']())))) {
               return Opal.yield1($yield, pathname.$to_s());
             } else {
               return nil
-            };}, $$17.$$s = self, $$17.$$arity = 1, $$17));
-        }, $Index_match$15.$$arity = 2);
+            };}, {$$arity: 1, $$s: self});
+        }, 2);
         
-        Opal.def(self, '$paths_contain?', $Index_paths_contain$ques$18 = function(dirname) {
-          var $$19, self = this;
-
-          return $send(self.$paths(), 'any?', [], ($$19 = function(path){var self = $$19.$$s == null ? this : $$19.$$s;
+        $def(self, '$paths_contain?', function $Index_paths_contain$ques$9(dirname) {
+          var self = this;
 
+          return $send(self.$paths(), 'any?', [], function $$10(path){
             
             
-            if (path == null) {
-              path = nil;
-            };
-            return dirname.$to_s()['$[]'](0, path.$length())['$=='](path);}, $$19.$$s = self, $$19.$$arity = 1, $$19))
-        }, $Index_paths_contain$ques$18.$$arity = 1);
+            if (path == null) path = nil;;
+            return dirname.$to_s()['$[]'](0, path.$length())['$=='](path);}, 1)
+        }, 1);
         
-        Opal.def(self, '$pattern_for', $Index_pattern_for$20 = function $$pattern_for(basename) {
-          var self = this, $ret_or_3 = nil, $writer = nil;
+        $def(self, '$pattern_for', function $$pattern_for(basename) {
+          var self = this, $ret_or_1 = nil, $writer = nil;
 
-          if ($truthy(($ret_or_3 = self.patterns['$[]'](basename)))) {
-            return $ret_or_3
+          if ($truthy(($ret_or_1 = self.patterns['$[]'](basename)))) {
+            return $ret_or_1
           } else {
             
             $writer = [basename, self.$build_pattern_for(basename)];
-            $send(self.patterns, '[]=', Opal.to_a($writer));
+            $send(self.patterns, '[]=', $to_a($writer));
             return $writer[$rb_minus($writer["length"], 1)];
           }
-        }, $Index_pattern_for$20.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$build_pattern_for', $Index_build_pattern_for$21 = function $$build_pattern_for(basename) {
-          var $$22, self = this, extension_pattern = nil;
+        $def(self, '$build_pattern_for', function $$build_pattern_for(basename) {
+          var self = this, extension_pattern = nil;
 
           
-          extension_pattern = $send(self.$extensions(), 'map', [], ($$22 = function(e){var self = $$22.$$s == null ? this : $$22.$$s;
-
+          extension_pattern = $send(self.$extensions(), 'map', [], function $$11(e){
             
             
-            if (e == null) {
-              e = nil;
-            };
-            return $$($nesting, 'Regexp').$escape(e);}, $$22.$$s = self, $$22.$$arity = 1, $$22)).$join("|");
-          return Opal.regexp(["^", basename, "(?:", extension_pattern, ")*$"]);
-        }, $Index_build_pattern_for$21.$$arity = 1);
-        return (Opal.def(self, '$sort_matches', $Index_sort_matches$23 = function $$sort_matches(matches, basename) {
-          var $$24, self = this;
+            if (e == null) e = nil;;
+            return $$('Regexp').$escape(e);}, 1).$join("|");
+          return $regexp(["^", basename, "(?:", extension_pattern, ")*$"]);
+        }, 1);
+        return $def(self, '$sort_matches', function $$sort_matches(matches, basename) {
+          var self = this;
 
-          return $send(matches, 'sort_by', [], ($$24 = function(match){var self = $$24.$$s == null ? this : $$24.$$s, $$25, extnames = nil;
+          return $send(matches, 'sort_by', [], function $$12(match){var self = $$12.$$s == null ? this : $$12.$$s, extnames = nil;
 
             
             
-            if (match == null) {
-              match = nil;
-            };
+            if (match == null) match = nil;;
             extnames = match.$sub(basename.$to_s(), "").$to_s().$scan(/\.[^.]+/);
-            return $send(extnames, 'inject', [0], ($$25 = function(sum, ext){var self = $$25.$$s == null ? this : $$25.$$s, index = nil;
+            return $send(extnames, 'inject', [0], function $$13(sum, ext){var self = $$13.$$s == null ? this : $$13.$$s, index = nil;
 
               
               
-              if (sum == null) {
-                sum = nil;
-              };
+              if (sum == null) sum = nil;;
               
-              if (ext == null) {
-                ext = nil;
-              };
+              if (ext == null) ext = nil;;
               index = self.$extensions().$index(ext);
               if ($truthy(index)) {
                 return $rb_plus($rb_plus(sum, index), 1)
               } else {
                 return sum
-              };}, $$25.$$s = self, $$25.$$arity = 2, $$25));}, $$24.$$s = self, $$24.$$arity = 1, $$24))
-        }, $Index_sort_matches$23.$$arity = 2), nil) && 'sort_matches';
+              };}, {$$arity: 2, $$s: self});}, {$$arity: 1, $$s: self})
+        }, 2);
       })($nesting[0], null, $nesting);
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'Trail');
 
-        var $nesting = [self].concat($parent_nesting), $Trail_initialize$26, $Trail_root$27, $Trail_append_paths$28, $Trail_append_extensions$30, $Trail_find$32, $Trail_index$33, $Trail_entries$34, $Trail_stat$36, $Trail_normalize_extension$37, $Trail_normalize_path$38;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.root = self.$$prototype.paths = self.$$prototype.extensions = nil;
+        $proto.root = $proto.paths = $proto.extensions = nil;
         
         self.$attr_reader("paths");
         self.$attr_reader("extensions");
         
-        Opal.def(self, '$initialize', $Trail_initialize$26 = function $$initialize(root) {
+        $def(self, '$initialize', function $$initialize(root) {
           var self = this;
 
           
           
-          if (root == null) {
-            root = ".";
-          };
-          self.root = $$($nesting, 'Pathname').$new(root).$expand_path();
+          if (root == null) root = ".";;
+          self.root = $$('Pathname').$new(root).$expand_path();
           self.paths = [];
           return (self.extensions = []);
-        }, $Trail_initialize$26.$$arity = -1);
+        }, -1);
         
-        Opal.def(self, '$root', $Trail_root$27 = function $$root() {
+        $def(self, '$root', function $$root() {
           var self = this;
 
           return self.root.$to_s()
-        }, $Trail_root$27.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$append_paths', $Trail_append_paths$28 = function $$append_paths($a) {
-          var $post_args, paths, $$29, self = this;
+        $def(self, '$append_paths', function $$append_paths($a) {
+          var $post_args, paths, self = this;
 
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
           paths = $post_args;;
-          return self.paths.$concat($send(paths, 'map', [], ($$29 = function(p){var self = $$29.$$s == null ? this : $$29.$$s;
+          return self.paths.$concat($send(paths, 'map', [], function $$14(p){var self = $$14.$$s == null ? this : $$14.$$s;
 
             
             
-            if (p == null) {
-              p = nil;
-            };
-            return self.$normalize_path(p);}, $$29.$$s = self, $$29.$$arity = 1, $$29)));
-        }, $Trail_append_paths$28.$$arity = -1);
+            if (p == null) p = nil;;
+            return self.$normalize_path(p);}, {$$arity: 1, $$s: self}));
+        }, -1);
         
-        Opal.def(self, '$append_extensions', $Trail_append_extensions$30 = function $$append_extensions($a) {
-          var $post_args, extensions, $$31, self = this;
+        $def(self, '$append_extensions', function $$append_extensions($a) {
+          var $post_args, extensions, self = this;
 
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
           extensions = $post_args;;
-          return self.extensions.$concat($send(extensions, 'map', [], ($$31 = function(e){var self = $$31.$$s == null ? this : $$31.$$s;
+          return self.extensions.$concat($send(extensions, 'map', [], function $$15(e){var self = $$15.$$s == null ? this : $$15.$$s;
 
             
             
-            if (e == null) {
-              e = nil;
-            };
-            return self.$normalize_extension(e);}, $$31.$$s = self, $$31.$$arity = 1, $$31)));
-        }, $Trail_append_extensions$30.$$arity = -1);
+            if (e == null) e = nil;;
+            return self.$normalize_extension(e);}, {$$arity: 1, $$s: self}));
+        }, -1);
         
-        Opal.def(self, '$find', $Trail_find$32 = function $$find($a) {
-          var $iter = $Trail_find$32.$$p, block = $iter || nil, $post_args, args, self = this;
+        $def(self, '$find', function $$find($a) {
+          var block = $$find.$$p || nil, $post_args, args, self = this;
 
-          if ($iter) $Trail_find$32.$$p = null;
+          delete $$find.$$p;
           
+          ;
           
-          if ($iter) $Trail_find$32.$$p = null;;
-          
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
           args = $post_args;;
-          return $send(self.$index(), 'find', Opal.to_a(args), block.$to_proc());
-        }, $Trail_find$32.$$arity = -1);
+          return $send(self.$index(), 'find', $to_a(args), block.$to_proc());
+        }, -1);
         
-        Opal.def(self, '$index', $Trail_index$33 = function $$index() {
+        $def(self, '$index', function $$index() {
           var self = this;
 
-          return $$($nesting, 'Index').$new(self.$root(), self.$paths(), self.$extensions())
-        }, $Trail_index$33.$$arity = 0);
+          return $$('Index').$new(self.$root(), self.$paths(), self.$extensions())
+        }, 0);
         
-        Opal.def(self, '$entries', $Trail_entries$34 = function $$entries(path) {
-          var $$35, self = this, pathname = nil;
+        $def(self, '$entries', function $$entries(path) {
+          var pathname = nil;
 
           
-          pathname = $$($nesting, 'Pathname').$new(path);
+          pathname = $$('Pathname').$new(path);
           if ($truthy(pathname['$directory?']())) {
-            return $send(pathname.$entries(), 'reject', [], ($$35 = function(entry){var self = $$35.$$s == null ? this : $$35.$$s;
-
+            return $send(pathname.$entries(), 'reject', [], function $$16(entry){
               
               
-              if (entry == null) {
-                entry = nil;
-              };
-              return entry.$to_s()['$=~'](/^\.|~$|^\#.*\#$/);}, $$35.$$s = self, $$35.$$arity = 1, $$35)).$sort()
+              if (entry == null) entry = nil;;
+              return entry.$to_s()['$=~'](/^\.|~$|^\#.*\#$/);}, 1).$sort()
           } else {
             return []
           };
-        }, $Trail_entries$34.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$stat', $Trail_stat$36 = function $$stat(path) {
-          var self = this;
-
-          if ($truthy($$($nesting, 'File')['$exist?'](path))) {
-            return $$($nesting, 'File').$stat(path.$to_s())
+        $def(self, '$stat', function $$stat(path) {
+          
+          if ($truthy($$('File')['$exist?'](path))) {
+            return $$('File').$stat(path.$to_s())
           } else {
             return nil
           }
-        }, $Trail_stat$36.$$arity = 1);
+        }, 1);
         self.$private();
         
-        Opal.def(self, '$normalize_extension', $Trail_normalize_extension$37 = function $$normalize_extension(ext) {
-          var self = this;
-
+        $def(self, '$normalize_extension', function $$normalize_extension(ext) {
+          
           if ($truthy(ext['$start_with?']("."))) {
             return ext
           } else {
-            return "" + "." + (ext)
+            return "." + (ext)
           }
-        }, $Trail_normalize_extension$37.$$arity = 1);
-        return (Opal.def(self, '$normalize_path', $Trail_normalize_path$38 = function $$normalize_path(path) {
+        }, 1);
+        return $def(self, '$normalize_path', function $$normalize_path(path) {
           var self = this;
 
           
-          path = $$($nesting, 'Pathname').$new(path);
+          path = $$('Pathname').$new(path);
           if ($truthy(path['$relative?']())) {
-            path = self.root.$join(path)};
+            path = self.root.$join(path)
+          };
           return path.$expand_path().$to_s();
-        }, $Trail_normalize_path$38.$$arity = 1), nil) && 'normalize_path';
+        }, 1);
       })($nesting[0], null, $nesting);
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/path_reader"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy;
+Opal.modules["opal/path_reader"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $const_set = Opal.const_set, $regexp = Opal.regexp, $send = Opal.send, $to_a = Opal.to_a, $def = Opal.def, $truthy = Opal.truthy;
 
-  Opal.add_stubs(['$require', '$freeze', '$quote', '$paths', '$new', '$append_paths', '$append_extensions', '$expand', '$nil?', '$exist?', '$open', '$to_proc', '$absolute?', '$=~', '$find_path', '$file_finder', '$extensions', '$private', '$Pathname', '$find', '$attr_reader']);
+  Opal.add_stubs('require,freeze,quote,paths,new,append_paths,append_extensions,expand,nil?,exist?,open,to_proc,=~,absolute?,find_path,file_finder,extensions,private,Pathname,find,attr_reader');
   
   self.$require("opal/regexp_anchors");
   self.$require("opal/hike");
@@ -1017,413 +901,350 @@ Opal.modules["opal/path_reader"] = function(Opal) {
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'PathReader');
 
-      var $nesting = [self].concat($parent_nesting), $PathReader_initialize$1, $PathReader_read$2, $PathReader_expand$3, $PathReader_paths$4, $PathReader_extensions$5, $PathReader_append_paths$6, $PathReader_find_path$7;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.file_finder = nil;
+      $proto.file_finder = nil;
       
-      Opal.const_set($nesting[0], 'RELATIVE_PATH_REGEXP', Opal.regexp([$$$($$($nesting, 'Opal'), 'REGEXP_START'), "\\.?\\.", $$($nesting, 'Regexp').$quote($$$($$($nesting, 'File'), 'SEPARATOR'))]).$freeze());
-      Opal.const_set($nesting[0], 'DEFAULT_EXTENSIONS', [".js", ".js.rb", ".rb", ".opalerb"].$freeze());
+      $const_set($nesting[0], 'RELATIVE_PATH_REGEXP', $regexp([$$$($$('Opal'), 'REGEXP_START'), "\\.?\\.", $$('Regexp').$quote($$$($$('File'), 'SEPARATOR'))]).$freeze());
+      $const_set($nesting[0], 'DEFAULT_EXTENSIONS', [".js", ".js.rb", ".rb", ".opalerb"].$freeze());
       
-      Opal.def(self, '$initialize', $PathReader_initialize$1 = function $$initialize(paths, extensions) {
+      $def(self, '$initialize', function $$initialize(paths, extensions) {
         var self = this;
 
         
         
-        if (paths == null) {
-          paths = $$($nesting, 'Opal').$paths();
-        };
+        if (paths == null) paths = $$('Opal').$paths();;
         
-        if (extensions == null) {
-          extensions = $$($nesting, 'DEFAULT_EXTENSIONS');
-        };
-        self.file_finder = $$$($$($nesting, 'Hike'), 'Trail').$new();
-        $send(self.file_finder, 'append_paths', Opal.to_a(paths));
-        return $send(self.file_finder, 'append_extensions', Opal.to_a(extensions));
-      }, $PathReader_initialize$1.$$arity = -1);
+        if (extensions == null) extensions = $$('DEFAULT_EXTENSIONS');;
+        self.file_finder = $$$($$('Hike'), 'Trail').$new();
+        $send(self.file_finder, 'append_paths', $to_a(paths));
+        return $send(self.file_finder, 'append_extensions', $to_a(extensions));
+      }, -1);
       
-      Opal.def(self, '$read', $PathReader_read$2 = function $$read(path) {
+      $def(self, '$read', function $$read(path) {
         var self = this, full_path = nil;
 
         
         full_path = self.$expand(path);
         if ($truthy(full_path['$nil?']())) {
-          return nil};
-        if ($truthy($$($nesting, 'File')['$exist?'](full_path))) {
-          return $send($$($nesting, 'File'), 'open', [full_path, "rb:UTF-8"], "read".$to_proc())
+          return nil
+        };
+        if ($truthy($$('File')['$exist?'](full_path))) {
+          return $send($$('File'), 'open', [full_path, "rb:UTF-8"], "read".$to_proc())
         } else {
           return nil
         };
-      }, $PathReader_read$2.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$expand', $PathReader_expand$3 = function $$expand(path) {
-        var self = this, $ret_or_1 = nil;
+      $def(self, '$expand', function $$expand(path) {
+        var self = this;
 
-        if ($truthy((function() {if ($truthy(($ret_or_1 = $$($nesting, 'Pathname').$new(path)['$absolute?']()))) {
-          return $ret_or_1
-        } else {
-          return path['$=~']($$($nesting, 'RELATIVE_PATH_REGEXP'))
-        }; return nil; })())) {
+        if (($truthy($$('Pathname').$new(path)['$absolute?']()) || ($truthy(path['$=~']($$('RELATIVE_PATH_REGEXP')))))) {
           return path
         } else {
           return self.$find_path(path)
         }
-      }, $PathReader_expand$3.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$paths', $PathReader_paths$4 = function $$paths() {
+      $def(self, '$paths', function $$paths() {
         var self = this;
 
         return self.$file_finder().$paths()
-      }, $PathReader_paths$4.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$extensions', $PathReader_extensions$5 = function $$extensions() {
+      $def(self, '$extensions', function $$extensions() {
         var self = this;
 
         return self.$file_finder().$extensions()
-      }, $PathReader_extensions$5.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$append_paths', $PathReader_append_paths$6 = function $$append_paths($a) {
+      $def(self, '$append_paths', function $$append_paths($a) {
         var $post_args, paths, self = this;
 
         
         
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
+        $post_args = Opal.slice.call(arguments);
         
         paths = $post_args;;
-        return $send(self.$file_finder(), 'append_paths', Opal.to_a(paths));
-      }, $PathReader_append_paths$6.$$arity = -1);
+        return $send(self.$file_finder(), 'append_paths', $to_a(paths));
+      }, -1);
       self.$private();
       
-      Opal.def(self, '$find_path', $PathReader_find_path$7 = function $$find_path(path) {
-        var self = this, pathname = nil, $ret_or_2 = nil;
+      $def(self, '$find_path', function $$find_path(path) {
+        var self = this, pathname = nil;
 
         
         pathname = self.$Pathname(path);
-        if ($truthy((function() {if ($truthy(($ret_or_2 = pathname['$absolute?']()))) {
-          return pathname['$exist?']()
-        } else {
-          return $ret_or_2
-        }; return nil; })())) {
-          return path};
+        if (($truthy(pathname['$absolute?']()) && ($truthy(pathname['$exist?']())))) {
+          return path
+        };
         return self.$file_finder().$find(path);
-      }, $PathReader_find_path$7.$$arity = 1);
+      }, 1);
       return self.$attr_reader("file_finder");
     })($nesting[0], null, $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/paths"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $send = Opal.send, $truthy = Opal.truthy;
+Opal.modules["opal/paths"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $defs = Opal.defs, $send = Opal.send, $to_a = Opal.to_a, $def = Opal.def, $truthy = Opal.truthy, $rb_plus = Opal.rb_plus;
 
-  Opal.add_stubs(['$expand_path', '$append_paths', '$concat', '$require_paths_for_gem', '$private', '$find_by_name', '$raise', '$each', '$runtime_dependencies', '$+', '$name', '$gem_dir', '$map', '$require_paths', '$<<', '$join', '$extend', '$freeze', '$core_dir', '$std_dir', '$reset_paths!']);
+  Opal.add_stubs('expand_path,append_paths,concat,require_paths_for_gem,private,find_by_name,raise,each,runtime_dependencies,+,name,gem_dir,map,require_paths,<<,join,extend,freeze,core_dir,std_dir,reset_paths!');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Opal');
 
-    var $nesting = [self].concat($parent_nesting), $Opal_gem_dir$1, $Opal_core_dir$2, $Opal_std_dir$3, $Opal_append_path$4, $Opal_append_paths$5, $Opal_paths$10, $Opal_reset_paths$excl$11;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
-    Opal.defs(self, '$gem_dir', $Opal_gem_dir$1 = function $$gem_dir() {
-      var self = this;
-
-      return $$($nesting, 'File').$expand_path("../..", "opal/paths.rb")
-    }, $Opal_gem_dir$1.$$arity = 0);
-    Opal.defs(self, '$core_dir', $Opal_core_dir$2 = function $$core_dir() {
-      var self = this;
-
-      return $$($nesting, 'File').$expand_path("../../../opal", "opal/paths.rb")
-    }, $Opal_core_dir$2.$$arity = 0);
-    Opal.defs(self, '$std_dir', $Opal_std_dir$3 = function $$std_dir() {
-      var self = this;
-
-      return $$($nesting, 'File').$expand_path("../../../stdlib", "opal/paths.rb")
-    }, $Opal_std_dir$3.$$arity = 0);
-    Opal.defs(self, '$append_path', $Opal_append_path$4 = function $$append_path(path) {
+    $defs(self, '$gem_dir', function $$gem_dir() {
+      
+      return $$('File').$expand_path("../..", "opal/paths.rb")
+    }, 0);
+    $defs(self, '$core_dir', function $$core_dir() {
+      
+      return $$('File').$expand_path("../../../opal", "opal/paths.rb")
+    }, 0);
+    $defs(self, '$std_dir', function $$std_dir() {
+      
+      return $$('File').$expand_path("../../../stdlib", "opal/paths.rb")
+    }, 0);
+    $defs(self, '$append_path', function $$append_path(path) {
       var self = this;
 
       return self.$append_paths(path)
-    }, $Opal_append_path$4.$$arity = 1);
-    Opal.defs(self, '$append_paths', $Opal_append_paths$5 = function $$append_paths($a) {
+    }, 1);
+    $defs(self, '$append_paths', function $$append_paths($a) {
       var $post_args, paths, self = this;
       if (self.paths == null) self.paths = nil;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       paths = $post_args;;
       self.paths.$concat(paths);
       return nil;
-    }, $Opal_append_paths$5.$$arity = -1);
+    }, -1);
     (function($base, $parent_nesting) {
       var self = $module($base, 'UseGem');
 
-      var $nesting = [self].concat($parent_nesting), $UseGem_use_gem$6, $UseGem_require_paths_for_gem$7;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
       
-      Opal.def(self, '$use_gem', $UseGem_use_gem$6 = function $$use_gem(gem_name, include_dependencies) {
+      $def(self, '$use_gem', function $$use_gem(gem_name, include_dependencies) {
         var self = this;
 
         
         
-        if (include_dependencies == null) {
-          include_dependencies = true;
-        };
-        return $send(self, 'append_paths', Opal.to_a(self.$require_paths_for_gem(gem_name, include_dependencies)));
-      }, $UseGem_use_gem$6.$$arity = -2);
+        if (include_dependencies == null) include_dependencies = true;;
+        return $send(self, 'append_paths', $to_a(self.$require_paths_for_gem(gem_name, include_dependencies)));
+      }, -2);
       self.$private();
-      return (Opal.def(self, '$require_paths_for_gem', $UseGem_require_paths_for_gem$7 = function $$require_paths_for_gem(gem_name, include_dependencies) {
-        var $$8, $$9, self = this, paths = nil, spec = nil, gem_dir = nil;
+      return $def(self, '$require_paths_for_gem', function $$require_paths_for_gem(gem_name, include_dependencies) {
+        var self = this, paths = nil, spec = nil, gem_dir = nil;
 
         
         paths = [];
-        spec = $$$($$($nesting, 'Gem'), 'Specification').$find_by_name(gem_name);
-        if ($truthy(spec)) {
-        } else {
-          self.$raise($$($nesting, 'GemNotFound'), gem_name)
+        spec = $$$($$('Gem'), 'Specification').$find_by_name(gem_name);
+        if (!$truthy(spec)) {
+          self.$raise($$('GemNotFound'), gem_name)
         };
         if ($truthy(include_dependencies)) {
-          $send(spec.$runtime_dependencies(), 'each', [], ($$8 = function(dependency){var self = $$8.$$s == null ? this : $$8.$$s;
+          $send(spec.$runtime_dependencies(), 'each', [], function $$1(dependency){var self = $$1.$$s == null ? this : $$1.$$s;
 
             
             
-            if (dependency == null) {
-              dependency = nil;
-            };
-            return (paths = $rb_plus(paths, self.$require_paths_for_gem(dependency.$name(), include_dependencies)));}, $$8.$$s = self, $$8.$$arity = 1, $$8))};
+            if (dependency == null) dependency = nil;;
+            return (paths = $rb_plus(paths, self.$require_paths_for_gem(dependency.$name(), include_dependencies)));}, {$$arity: 1, $$s: self})
+        };
         gem_dir = spec.$gem_dir();
-        $send(spec.$require_paths(), 'map', [], ($$9 = function(path){var self = $$9.$$s == null ? this : $$9.$$s;
-
+        $send(spec.$require_paths(), 'map', [], function $$2(path){
           
           
-          if (path == null) {
-            path = nil;
-          };
-          return paths['$<<']($$($nesting, 'File').$join(gem_dir, path));}, $$9.$$s = self, $$9.$$arity = 1, $$9));
+          if (path == null) path = nil;;
+          return paths['$<<']($$('File').$join(gem_dir, path));}, 1);
         return paths;
-      }, $UseGem_require_paths_for_gem$7.$$arity = 2), nil) && 'require_paths_for_gem';
+      }, 2);
     })($nesting[0], $nesting);
-    self.$extend($$($nesting, 'UseGem'));
-    Opal.defs(self, '$paths', $Opal_paths$10 = function $$paths() {
+    self.$extend($$('UseGem'));
+    $defs(self, '$paths', function $$paths() {
       var self = this;
       if (self.paths == null) self.paths = nil;
 
       return self.paths.$freeze()
-    }, $Opal_paths$10.$$arity = 0);
-    Opal.defs(self, '$reset_paths!', $Opal_reset_paths$excl$11 = function() {
+    }, 0);
+    $defs(self, '$reset_paths!', function $Opal_reset_paths$excl$3() {
       var self = this;
 
       
       self.paths = [self.$core_dir(), self.$std_dir(), self.$gem_dir()];
       nil;
       return nil;
-    }, $Opal_reset_paths$excl$11.$$arity = 0);
+    }, 0);
     return self['$reset_paths!']();
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["set"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  function $rb_le(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs <= rhs : lhs['$<='](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $hash2 = Opal.hash2, $truthy = Opal.truthy, $send = Opal.send, $alias = Opal.alias, $module = Opal.module;
-
-  Opal.add_stubs(['$include', '$new', '$nil?', '$===', '$raise', '$each', '$add', '$merge', '$class', '$respond_to?', '$subtract', '$dup', '$join', '$to_a', '$equal?', '$instance_of?', '$==', '$instance_variable_get', '$is_a?', '$size', '$all?', '$include?', '$[]=', '$-', '$enum_for', '$[]', '$<<', '$replace', '$delete', '$select', '$reject', '$delete_if', '$to_proc', '$keep_if', '$each_key', '$empty?', '$eql?', '$instance_eval', '$clear', '$<', '$<=', '$any?', '$!', '$intersect?', '$keys']);
+Opal.modules["set"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $defs = Opal.defs, $hash2 = Opal.hash2, $truthy = Opal.truthy, $eqeqeq = Opal.eqeqeq, $Kernel = Opal.Kernel, $send = Opal.send, $def = Opal.def, $eqeq = Opal.eqeq, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $rb_lt = Opal.rb_lt, $rb_le = Opal.rb_le, $alias = Opal.alias, $module = Opal.module;
+
+  Opal.add_stubs('include,new,nil?,===,raise,each,add,merge,class,respond_to?,subtract,dup,join,to_a,equal?,instance_of?,==,instance_variable_get,size,is_a?,all?,include?,[]=,-,enum_for,[],<<,replace,delete,select,reject,delete_if,to_proc,keep_if,each_key,empty?,eql?,instance_eval,clear,<,<=,any?,!,intersect?,keys');
   
-  (function($base, $super, $parent_nesting) {
+  (function($base, $super) {
     var self = $klass($base, $super, 'Set');
 
-    var $nesting = [self].concat($parent_nesting), $Set_$$$1, $Set_initialize$2, $Set_dup$4, $Set_$minus$5, $Set_inspect$6, $Set_$eq_eq$7, $Set_add$9, $Set_classify$10, $Set_collect$excl$13, $Set_delete$15, $Set_delete$ques$16, $Set_delete_if$17, $Set_keep_if$20, $Set_reject$excl$23, $Set_select$excl$24, $Set_add$ques$25, $Set_each$26, $Set_empty$ques$27, $Set_eql$ques$28, $Set_clear$30, $Set_include$ques$31, $Set_merge$32, $Set_replace$34, $Set_size$35, $Set_subtract$36, $Set_$$38, $Set_superset$ques$39, $Set_proper_superset$ques$41, $Set_subset$ques$43, $Set_proper_subset$ques$45, $Set_intersect$ques$47, $Set_disjoint$ques$50, $Set_to_a$51;
+    var $ret_or_1 = nil, $proto = self.$$prototype;
 
-    self.$$prototype.hash = nil;
+    $proto.hash = nil;
     
-    self.$include($$($nesting, 'Enumerable'));
-    Opal.defs(self, '$[]', $Set_$$$1 = function($a) {
+    self.$include($$$('Enumerable'));
+    $defs(self, '$[]', function $Set_$$$1($a) {
       var $post_args, ary, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       ary = $post_args;;
       return self.$new(ary);
-    }, $Set_$$$1.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$initialize', $Set_initialize$2 = function $$initialize(enum$) {
-      var $iter = $Set_initialize$2.$$p, block = $iter || nil, $$3, self = this;
+    $def(self, '$initialize', function $$initialize(enum$) {
+      var block = $$initialize.$$p || nil, self = this;
 
-      if ($iter) $Set_initialize$2.$$p = null;
+      delete $$initialize.$$p;
       
+      ;
       
-      if ($iter) $Set_initialize$2.$$p = null;;
-      
-      if (enum$ == null) {
-        enum$ = nil;
-      };
+      if (enum$ == null) enum$ = nil;;
       self.hash = $hash2([], {});
       if ($truthy(enum$['$nil?']())) {
-        return nil};
-      if ($truthy($$($nesting, 'Enumerable')['$==='](enum$))) {
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "value must be enumerable")
+        return nil
+      };
+      if (!$eqeqeq($$$('Enumerable'), enum$)) {
+        $Kernel.$raise($$$('ArgumentError'), "value must be enumerable")
       };
       if ($truthy(block)) {
-        return $send(enum$, 'each', [], ($$3 = function(item){var self = $$3.$$s == null ? this : $$3.$$s;
+        return $send(enum$, 'each', [], function $$2(item){var self = $$2.$$s == null ? this : $$2.$$s;
 
           
           
-          if (item == null) {
-            item = nil;
-          };
-          return self.$add(Opal.yield1(block, item));}, $$3.$$s = self, $$3.$$arity = 1, $$3))
+          if (item == null) item = nil;;
+          return self.$add(Opal.yield1(block, item));}, {$$arity: 1, $$s: self})
       } else {
         return self.$merge(enum$)
       };
-    }, $Set_initialize$2.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$dup', $Set_dup$4 = function $$dup() {
+    $def(self, '$dup', function $$dup() {
       var self = this, result = nil;
 
       
       result = self.$class().$new();
       return result.$merge(self);
-    }, $Set_dup$4.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$-', $Set_$minus$5 = function(enum$) {
+    $def(self, '$-', function $Set_$minus$3(enum$) {
       var self = this;
 
       
-      if ($truthy(enum$['$respond_to?']("each"))) {
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "value must be enumerable")
+      if (!$truthy(enum$['$respond_to?']("each"))) {
+        $Kernel.$raise($$$('ArgumentError'), "value must be enumerable")
       };
       return self.$dup().$subtract(enum$);
-    }, $Set_$minus$5.$$arity = 1);
-    $alias(self, "difference", "-");
+    }, 1);
     
-    Opal.def(self, '$inspect', $Set_inspect$6 = function $$inspect() {
+    $def(self, '$inspect', function $$inspect() {
       var self = this;
 
-      return "" + "#<Set: {" + (self.$to_a().$join(",")) + "}>"
-    }, $Set_inspect$6.$$arity = 0);
+      return "#<Set: {" + (self.$to_a().$join(",")) + "}>"
+    }, 0);
     
-    Opal.def(self, '$==', $Set_$eq_eq$7 = function(other) {
-      var $$8, self = this, $ret_or_1 = nil;
+    $def(self, '$==', function $Set_$eq_eq$4(other) {
+      var self = this;
 
       if ($truthy(self['$equal?'](other))) {
         return true
       } else if ($truthy(other['$instance_of?'](self.$class()))) {
         return self.hash['$=='](other.$instance_variable_get("@hash"))
-      } else if ($truthy((function() {if ($truthy(($ret_or_1 = other['$is_a?']($$($nesting, 'Set'))))) {
-        return self.$size()['$=='](other.$size())
-      } else {
-        return $ret_or_1
-      }; return nil; })())) {
-        return $send(other, 'all?', [], ($$8 = function(o){var self = $$8.$$s == null ? this : $$8.$$s;
+      } else if (($truthy(other['$is_a?']($$$('Set'))) && ($eqeq(self.$size(), other.$size())))) {
+        return $send(other, 'all?', [], function $$5(o){var self = $$5.$$s == null ? this : $$5.$$s;
           if (self.hash == null) self.hash = nil;
 
           
           
-          if (o == null) {
-            o = nil;
-          };
-          return self.hash['$include?'](o);}, $$8.$$s = self, $$8.$$arity = 1, $$8))
+          if (o == null) o = nil;;
+          return self.hash['$include?'](o);}, {$$arity: 1, $$s: self})
       } else {
         return false
       }
-    }, $Set_$eq_eq$7.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$add', $Set_add$9 = function $$add(o) {
+    $def(self, '$add', function $$add(o) {
       var self = this, $writer = nil;
 
       
       
       $writer = [o, true];
-      $send(self.hash, '[]=', Opal.to_a($writer));
+      $send(self.hash, '[]=', $to_a($writer));
       $writer[$rb_minus($writer["length"], 1)];;
       return self;
-    }, $Set_add$9.$$arity = 1);
-    $alias(self, "<<", "add");
+    }, 1);
     
-    Opal.def(self, '$classify', $Set_classify$10 = function $$classify() {
-      var $iter = $Set_classify$10.$$p, block = $iter || nil, $$11, $$12, self = this, result = nil;
+    $def(self, '$classify', function $$classify() {
+      var block = $$classify.$$p || nil, self = this, result = nil;
 
-      if ($iter) $Set_classify$10.$$p = null;
-      
+      delete $$classify.$$p;
       
-      if ($iter) $Set_classify$10.$$p = null;;
-      if ((block !== nil)) {
-      } else {
+      ;
+      if (!(block !== nil)) {
         return self.$enum_for("classify")
       };
-      result = $send($$($nesting, 'Hash'), 'new', [], ($$11 = function(h, k){var self = $$11.$$s == null ? this : $$11.$$s, $writer = nil;
+      result = $send($$$('Hash'), 'new', [], function $$6(h, k){var self = $$6.$$s == null ? this : $$6.$$s, $writer = nil;
 
         
         
-        if (h == null) {
-          h = nil;
-        };
+        if (h == null) h = nil;;
         
-        if (k == null) {
-          k = nil;
-        };
+        if (k == null) k = nil;;
         $writer = [k, self.$class().$new()];
-        $send(h, '[]=', Opal.to_a($writer));
-        return $writer[$rb_minus($writer["length"], 1)];}, $$11.$$s = self, $$11.$$arity = 2, $$11));
-      $send(self, 'each', [], ($$12 = function(item){var self = $$12.$$s == null ? this : $$12.$$s;
-
+        $send(h, '[]=', $to_a($writer));
+        return $writer[$rb_minus($writer["length"], 1)];}, {$$arity: 2, $$s: self});
+      $send(self, 'each', [], function $$7(item){
         
         
-        if (item == null) {
-          item = nil;
-        };
-        return result['$[]'](Opal.yield1(block, item)).$add(item);}, $$12.$$s = self, $$12.$$arity = 1, $$12));
+        if (item == null) item = nil;;
+        return result['$[]'](Opal.yield1(block, item)).$add(item);}, 1);
       return result;
-    }, $Set_classify$10.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$collect!', $Set_collect$excl$13 = function() {
-      var $iter = $Set_collect$excl$13.$$p, block = $iter || nil, $$14, self = this, result = nil;
+    $def(self, '$collect!', function $Set_collect$excl$8() {
+      var block = $Set_collect$excl$8.$$p || nil, self = this, result = nil;
 
-      if ($iter) $Set_collect$excl$13.$$p = null;
-      
+      delete $Set_collect$excl$8.$$p;
       
-      if ($iter) $Set_collect$excl$13.$$p = null;;
-      if ((block !== nil)) {
-      } else {
+      ;
+      if (!(block !== nil)) {
         return self.$enum_for("collect!")
       };
       result = self.$class().$new();
-      $send(self, 'each', [], ($$14 = function(item){var self = $$14.$$s == null ? this : $$14.$$s;
-
+      $send(self, 'each', [], function $$9(item){
         
         
-        if (item == null) {
-          item = nil;
-        };
-        return result['$<<'](Opal.yield1(block, item));}, $$14.$$s = self, $$14.$$arity = 1, $$14));
+        if (item == null) item = nil;;
+        return result['$<<'](Opal.yield1(block, item));}, 1);
       return self.$replace(result);
-    }, $Set_collect$excl$13.$$arity = 0);
-    $alias(self, "map!", "collect!");
+    }, 0);
     
-    Opal.def(self, '$delete', $Set_delete$15 = function(o) {
+    $def(self, '$delete', function $Set_delete$10(o) {
       var self = this;
 
       
       self.hash.$delete(o);
       return self;
-    }, $Set_delete$15.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$delete?', $Set_delete$ques$16 = function(o) {
+    $def(self, '$delete?', function $Set_delete$ques$11(o) {
       var self = this;
 
       if ($truthy(self['$include?'](o))) {
@@ -1433,106 +1254,89 @@ Opal.modules["set"] = function(Opal) {
       } else {
         return nil
       }
-    }, $Set_delete$ques$16.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$delete_if', $Set_delete_if$17 = function $$delete_if() {
-      var $$18, $$19, $iter = $Set_delete_if$17.$$p, $yield = $iter || nil, self = this;
+    $def(self, '$delete_if', function $$delete_if() {
+      var $yield = $$delete_if.$$p || nil, self = this;
 
-      if ($iter) $Set_delete_if$17.$$p = null;
+      delete $$delete_if.$$p;
       
-      if (($yield !== nil)) {
-      } else {
+      if (!($yield !== nil)) {
         return self.$enum_for("delete_if")
       };
-      $send($send(self, 'select', [], ($$18 = function(o){var self = $$18.$$s == null ? this : $$18.$$s;
-
+      $send($send(self, 'select', [], function $$12(o){
         
         
-        if (o == null) {
-          o = nil;
-        };
-        return Opal.yield1($yield, o);;}, $$18.$$s = self, $$18.$$arity = 1, $$18)), 'each', [], ($$19 = function(o){var self = $$19.$$s == null ? this : $$19.$$s;
+        if (o == null) o = nil;;
+        return Opal.yield1($yield, o);;}, 1), 'each', [], function $$13(o){var self = $$13.$$s == null ? this : $$13.$$s;
         if (self.hash == null) self.hash = nil;
 
         
         
-        if (o == null) {
-          o = nil;
-        };
-        return self.hash.$delete(o);}, $$19.$$s = self, $$19.$$arity = 1, $$19));
+        if (o == null) o = nil;;
+        return self.hash.$delete(o);}, {$$arity: 1, $$s: self});
       return self;
-    }, $Set_delete_if$17.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$keep_if', $Set_keep_if$20 = function $$keep_if() {
-      var $$21, $$22, $iter = $Set_keep_if$20.$$p, $yield = $iter || nil, self = this;
+    $def(self, '$keep_if', function $$keep_if() {
+      var $yield = $$keep_if.$$p || nil, self = this;
 
-      if ($iter) $Set_keep_if$20.$$p = null;
+      delete $$keep_if.$$p;
       
-      if (($yield !== nil)) {
-      } else {
+      if (!($yield !== nil)) {
         return self.$enum_for("keep_if")
       };
-      $send($send(self, 'reject', [], ($$21 = function(o){var self = $$21.$$s == null ? this : $$21.$$s;
-
+      $send($send(self, 'reject', [], function $$14(o){
         
         
-        if (o == null) {
-          o = nil;
-        };
-        return Opal.yield1($yield, o);;}, $$21.$$s = self, $$21.$$arity = 1, $$21)), 'each', [], ($$22 = function(o){var self = $$22.$$s == null ? this : $$22.$$s;
+        if (o == null) o = nil;;
+        return Opal.yield1($yield, o);;}, 1), 'each', [], function $$15(o){var self = $$15.$$s == null ? this : $$15.$$s;
         if (self.hash == null) self.hash = nil;
 
         
         
-        if (o == null) {
-          o = nil;
-        };
-        return self.hash.$delete(o);}, $$22.$$s = self, $$22.$$arity = 1, $$22));
+        if (o == null) o = nil;;
+        return self.hash.$delete(o);}, {$$arity: 1, $$s: self});
       return self;
-    }, $Set_keep_if$20.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$reject!', $Set_reject$excl$23 = function() {
-      var $iter = $Set_reject$excl$23.$$p, block = $iter || nil, self = this, before = nil;
+    $def(self, '$reject!', function $Set_reject$excl$16() {
+      var block = $Set_reject$excl$16.$$p || nil, self = this, before = nil;
 
-      if ($iter) $Set_reject$excl$23.$$p = null;
+      delete $Set_reject$excl$16.$$p;
       
-      
-      if ($iter) $Set_reject$excl$23.$$p = null;;
-      if ((block !== nil)) {
-      } else {
+      ;
+      if (!(block !== nil)) {
         return self.$enum_for("reject!")
       };
       before = self.$size();
       $send(self, 'delete_if', [], block.$to_proc());
-      if (self.$size()['$=='](before)) {
+      if ($eqeq(self.$size(), before)) {
         return nil
       } else {
         return self
       };
-    }, $Set_reject$excl$23.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$select!', $Set_select$excl$24 = function() {
-      var $iter = $Set_select$excl$24.$$p, block = $iter || nil, self = this, before = nil;
+    $def(self, '$select!', function $Set_select$excl$17() {
+      var block = $Set_select$excl$17.$$p || nil, self = this, before = nil;
 
-      if ($iter) $Set_select$excl$24.$$p = null;
+      delete $Set_select$excl$17.$$p;
       
-      
-      if ($iter) $Set_select$excl$24.$$p = null;;
-      if ((block !== nil)) {
-      } else {
+      ;
+      if (!(block !== nil)) {
         return self.$enum_for("select!")
       };
       before = self.$size();
       $send(self, 'keep_if', [], block.$to_proc());
-      if (self.$size()['$=='](before)) {
+      if ($eqeq(self.$size(), before)) {
         return nil
       } else {
         return self
       };
-    }, $Set_select$excl$24.$$arity = 0);
-    $alias(self, "filter!", "select!");
+    }, 0);
     
-    Opal.def(self, '$add?', $Set_add$ques$25 = function(o) {
+    $def(self, '$add?', function $Set_add$ques$18(o) {
       var self = this;
 
       if ($truthy(self['$include?'](o))) {
@@ -1540,277 +1344,240 @@ Opal.modules["set"] = function(Opal) {
       } else {
         return self.$add(o)
       }
-    }, $Set_add$ques$25.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$each', $Set_each$26 = function $$each() {
-      var $iter = $Set_each$26.$$p, block = $iter || nil, self = this;
+    $def(self, '$each', function $$each() {
+      var block = $$each.$$p || nil, self = this;
 
-      if ($iter) $Set_each$26.$$p = null;
-      
+      delete $$each.$$p;
       
-      if ($iter) $Set_each$26.$$p = null;;
-      if ((block !== nil)) {
-      } else {
+      ;
+      if (!(block !== nil)) {
         return self.$enum_for("each")
       };
       $send(self.hash, 'each_key', [], block.$to_proc());
       return self;
-    }, $Set_each$26.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$empty?', $Set_empty$ques$27 = function() {
+    $def(self, '$empty?', function $Set_empty$ques$19() {
       var self = this;
 
       return self.hash['$empty?']()
-    }, $Set_empty$ques$27.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$eql?', $Set_eql$ques$28 = function(other) {
-      var $$29, self = this;
+    $def(self, '$eql?', function $Set_eql$ques$20(other) {
+      var self = this;
 
-      return self.hash['$eql?']($send(other, 'instance_eval', [], ($$29 = function(){var self = $$29.$$s == null ? this : $$29.$$s;
+      return self.hash['$eql?']($send(other, 'instance_eval', [], function $$21(){var self = $$21.$$s == null ? this : $$21.$$s;
         if (self.hash == null) self.hash = nil;
 
-        return self.hash}, $$29.$$s = self, $$29.$$arity = 0, $$29)))
-    }, $Set_eql$ques$28.$$arity = 1);
+        return self.hash}, {$$arity: 0, $$s: self}))
+    }, 1);
     
-    Opal.def(self, '$clear', $Set_clear$30 = function $$clear() {
+    $def(self, '$clear', function $$clear() {
       var self = this;
 
       
       self.hash.$clear();
       return self;
-    }, $Set_clear$30.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$include?', $Set_include$ques$31 = function(o) {
+    $def(self, '$include?', function $Set_include$ques$22(o) {
       var self = this;
 
       return self.hash['$include?'](o)
-    }, $Set_include$ques$31.$$arity = 1);
-    $alias(self, "member?", "include?");
+    }, 1);
     
-    Opal.def(self, '$merge', $Set_merge$32 = function $$merge(enum$) {
-      var $$33, self = this;
+    $def(self, '$merge', function $$merge(enum$) {
+      var self = this;
 
       
-      $send(enum$, 'each', [], ($$33 = function(item){var self = $$33.$$s == null ? this : $$33.$$s;
+      $send(enum$, 'each', [], function $$23(item){var self = $$23.$$s == null ? this : $$23.$$s;
 
         
         
-        if (item == null) {
-          item = nil;
-        };
-        return self.$add(item);}, $$33.$$s = self, $$33.$$arity = 1, $$33));
+        if (item == null) item = nil;;
+        return self.$add(item);}, {$$arity: 1, $$s: self});
       return self;
-    }, $Set_merge$32.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$replace', $Set_replace$34 = function $$replace(enum$) {
+    $def(self, '$replace', function $$replace(enum$) {
       var self = this;
 
       
       self.$clear();
       self.$merge(enum$);
       return self;
-    }, $Set_replace$34.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$size', $Set_size$35 = function $$size() {
+    $def(self, '$size', function $$size() {
       var self = this;
 
       return self.hash.$size()
-    }, $Set_size$35.$$arity = 0);
-    $alias(self, "length", "size");
+    }, 0);
     
-    Opal.def(self, '$subtract', $Set_subtract$36 = function $$subtract(enum$) {
-      var $$37, self = this;
+    $def(self, '$subtract', function $$subtract(enum$) {
+      var self = this;
 
       
-      $send(enum$, 'each', [], ($$37 = function(item){var self = $$37.$$s == null ? this : $$37.$$s;
+      $send(enum$, 'each', [], function $$24(item){var self = $$24.$$s == null ? this : $$24.$$s;
 
         
         
-        if (item == null) {
-          item = nil;
-        };
-        return self.$delete(item);}, $$37.$$s = self, $$37.$$arity = 1, $$37));
+        if (item == null) item = nil;;
+        return self.$delete(item);}, {$$arity: 1, $$s: self});
       return self;
-    }, $Set_subtract$36.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$|', $Set_$$38 = function(enum$) {
+    $def(self, '$|', function $Set_$$25(enum$) {
       var self = this;
 
       
-      if ($truthy(enum$['$respond_to?']("each"))) {
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "value must be enumerable")
+      if (!$truthy(enum$['$respond_to?']("each"))) {
+        $Kernel.$raise($$$('ArgumentError'), "value must be enumerable")
       };
       return self.$dup().$merge(enum$);
-    }, $Set_$$38.$$arity = 1);
+    }, 1);
+    
+    function is_set(set) {
+      ($truthy(($ret_or_1 = (set)['$is_a?']($$$('Set')))) ? ($ret_or_1) : ($Kernel.$raise($$$('ArgumentError'), "value must be a set")))
+    }
+  ;
     
-    Opal.def(self, '$superset?', $Set_superset$ques$39 = function(set) {
-      var $$40, self = this, $ret_or_2 = nil;
+    $def(self, '$superset?', function $Set_superset$ques$26(set) {
+      var self = this;
 
       
-      if ($truthy(($ret_or_2 = set['$is_a?']($$($nesting, 'Set'))))) {
-        $ret_or_2
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "value must be a set")
-      };
+      is_set(set);
       if ($truthy($rb_lt(self.$size(), set.$size()))) {
-        return false};
-      return $send(set, 'all?', [], ($$40 = function(o){var self = $$40.$$s == null ? this : $$40.$$s;
+        return false
+      };
+      return $send(set, 'all?', [], function $$27(o){var self = $$27.$$s == null ? this : $$27.$$s;
 
         
         
-        if (o == null) {
-          o = nil;
-        };
-        return self['$include?'](o);}, $$40.$$s = self, $$40.$$arity = 1, $$40));
-    }, $Set_superset$ques$39.$$arity = 1);
-    $alias(self, ">=", "superset?");
+        if (o == null) o = nil;;
+        return self['$include?'](o);}, {$$arity: 1, $$s: self});
+    }, 1);
     
-    Opal.def(self, '$proper_superset?', $Set_proper_superset$ques$41 = function(set) {
-      var $$42, self = this, $ret_or_3 = nil;
+    $def(self, '$proper_superset?', function $Set_proper_superset$ques$28(set) {
+      var self = this;
 
       
-      if ($truthy(($ret_or_3 = set['$is_a?']($$($nesting, 'Set'))))) {
-        $ret_or_3
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "value must be a set")
-      };
+      is_set(set);
       if ($truthy($rb_le(self.$size(), set.$size()))) {
-        return false};
-      return $send(set, 'all?', [], ($$42 = function(o){var self = $$42.$$s == null ? this : $$42.$$s;
+        return false
+      };
+      return $send(set, 'all?', [], function $$29(o){var self = $$29.$$s == null ? this : $$29.$$s;
 
         
         
-        if (o == null) {
-          o = nil;
-        };
-        return self['$include?'](o);}, $$42.$$s = self, $$42.$$arity = 1, $$42));
-    }, $Set_proper_superset$ques$41.$$arity = 1);
-    $alias(self, ">", "proper_superset?");
+        if (o == null) o = nil;;
+        return self['$include?'](o);}, {$$arity: 1, $$s: self});
+    }, 1);
     
-    Opal.def(self, '$subset?', $Set_subset$ques$43 = function(set) {
-      var $$44, self = this, $ret_or_4 = nil;
+    $def(self, '$subset?', function $Set_subset$ques$30(set) {
+      var self = this;
 
       
-      if ($truthy(($ret_or_4 = set['$is_a?']($$($nesting, 'Set'))))) {
-        $ret_or_4
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "value must be a set")
-      };
+      is_set(set);
       if ($truthy($rb_lt(set.$size(), self.$size()))) {
-        return false};
-      return $send(self, 'all?', [], ($$44 = function(o){var self = $$44.$$s == null ? this : $$44.$$s;
-
+        return false
+      };
+      return $send(self, 'all?', [], function $$31(o){
         
         
-        if (o == null) {
-          o = nil;
-        };
-        return set['$include?'](o);}, $$44.$$s = self, $$44.$$arity = 1, $$44));
-    }, $Set_subset$ques$43.$$arity = 1);
-    $alias(self, "<=", "subset?");
+        if (o == null) o = nil;;
+        return set['$include?'](o);}, 1);
+    }, 1);
     
-    Opal.def(self, '$proper_subset?', $Set_proper_subset$ques$45 = function(set) {
-      var $$46, self = this, $ret_or_5 = nil;
+    $def(self, '$proper_subset?', function $Set_proper_subset$ques$32(set) {
+      var self = this;
 
       
-      if ($truthy(($ret_or_5 = set['$is_a?']($$($nesting, 'Set'))))) {
-        $ret_or_5
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "value must be a set")
-      };
+      is_set(set);
       if ($truthy($rb_le(set.$size(), self.$size()))) {
-        return false};
-      return $send(self, 'all?', [], ($$46 = function(o){var self = $$46.$$s == null ? this : $$46.$$s;
-
+        return false
+      };
+      return $send(self, 'all?', [], function $$33(o){
         
         
-        if (o == null) {
-          o = nil;
-        };
-        return set['$include?'](o);}, $$46.$$s = self, $$46.$$arity = 1, $$46));
-    }, $Set_proper_subset$ques$45.$$arity = 1);
-    $alias(self, "<", "proper_subset?");
+        if (o == null) o = nil;;
+        return set['$include?'](o);}, 1);
+    }, 1);
     
-    Opal.def(self, '$intersect?', $Set_intersect$ques$47 = function(set) {
-      var $$48, $$49, self = this;
+    $def(self, '$intersect?', function $Set_intersect$ques$34(set) {
+      var self = this;
 
       
-      if ($truthy(set['$is_a?']($$($nesting, 'Set')))) {
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "value must be a set")
-      };
+      is_set(set);
       if ($truthy($rb_lt(self.$size(), set.$size()))) {
-        return $send(self, 'any?', [], ($$48 = function(o){var self = $$48.$$s == null ? this : $$48.$$s;
-
+        return $send(self, 'any?', [], function $$35(o){
           
           
-          if (o == null) {
-            o = nil;
-          };
-          return set['$include?'](o);}, $$48.$$s = self, $$48.$$arity = 1, $$48))
+          if (o == null) o = nil;;
+          return set['$include?'](o);}, 1)
       } else {
-        return $send(set, 'any?', [], ($$49 = function(o){var self = $$49.$$s == null ? this : $$49.$$s;
+        return $send(set, 'any?', [], function $$36(o){var self = $$36.$$s == null ? this : $$36.$$s;
 
           
           
-          if (o == null) {
-            o = nil;
-          };
-          return self['$include?'](o);}, $$49.$$s = self, $$49.$$arity = 1, $$49))
+          if (o == null) o = nil;;
+          return self['$include?'](o);}, {$$arity: 1, $$s: self})
       };
-    }, $Set_intersect$ques$47.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$disjoint?', $Set_disjoint$ques$50 = function(set) {
+    $def(self, '$disjoint?', function $Set_disjoint$ques$37(set) {
       var self = this;
 
       return self['$intersect?'](set)['$!']()
-    }, $Set_disjoint$ques$50.$$arity = 1);
-    $alias(self, "+", "|");
-    $alias(self, "union", "|");
-    return (Opal.def(self, '$to_a', $Set_to_a$51 = function $$to_a() {
+    }, 1);
+    
+    $def(self, '$to_a', function $$to_a() {
       var self = this;
 
       return self.hash.$keys()
-    }, $Set_to_a$51.$$arity = 0), nil) && 'to_a';
-  })($nesting[0], null, $nesting);
+    }, 0);
+    $alias(self, "+", "|");
+    $alias(self, "<", "proper_subset?");
+    $alias(self, "<<", "add");
+    $alias(self, "<=", "subset?");
+    $alias(self, ">", "proper_superset?");
+    $alias(self, ">=", "superset?");
+    $alias(self, "difference", "-");
+    $alias(self, "filter!", "select!");
+    $alias(self, "length", "size");
+    $alias(self, "map!", "collect!");
+    $alias(self, "member?", "include?");
+    return $alias(self, "union", "|");
+  })('::', null);
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Enumerable');
 
-    var $nesting = [self].concat($parent_nesting), $Enumerable_to_set$52;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-    return (Opal.def(self, '$to_set', $Enumerable_to_set$52 = function $$to_set($a, $b) {
-      var $iter = $Enumerable_to_set$52.$$p, block = $iter || nil, $post_args, klass, args, self = this;
+    return $def(self, '$to_set', function $$to_set($a, $b) {
+      var block = $$to_set.$$p || nil, $post_args, klass, args, self = this;
 
-      if ($iter) $Enumerable_to_set$52.$$p = null;
+      delete $$to_set.$$p;
       
+      ;
       
-      if ($iter) $Enumerable_to_set$52.$$p = null;;
+      $post_args = Opal.slice.call(arguments);
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
-      
-      if ($post_args.length > 0) {
-        klass = $post_args[0];
-        $post_args.splice(0, 1);
-      }
-      if (klass == null) {
-        klass = $$($nesting, 'Set');
-      };
+      if ($post_args.length > 0) klass = $post_args.shift();
+      if (klass == null) klass = $$('Set');;
       
       args = $post_args;;
-      return $send(klass, 'new', [self].concat(Opal.to_a(args)), block.$to_proc());
-    }, $Enumerable_to_set$52.$$arity = -1), nil) && 'to_set'
-  })($nesting[0], $nesting);
+      return $send(klass, 'new', [self].concat($to_a(args)), block.$to_proc());
+    }, -1)
+  })('::', $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/config"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $truthy = Opal.truthy, $hash2 = Opal.hash2, $send = Opal.send, $lambda = Opal.lambda;
+Opal.modules["opal/config"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $truthy = Opal.truthy, $hash2 = Opal.hash2, $def = Opal.def, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $eqeqeq = Opal.eqeqeq, $lambda = Opal.lambda;
 
-  Opal.add_stubs(['$require', '$extend', '$private', '$fetch', '$[]=', '$config_options', '$-', '$define_singleton_method', '$config', '$any?', '$===', '$raise', '$inspect', '$public', '$each', '$call', '$default_config', '$config_option', '$new']);
+  Opal.add_stubs('require,extend,private,fetch,[]=,config_options,-,define_singleton_method,config,any?,===,raise,inspect,public,each,call,default_config,config_option,new');
   
   self.$require("set");
   return (function($base, $parent_nesting) {
@@ -1821,158 +1588,126 @@ Opal.modules["opal/config"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Config');
 
-      var $nesting = [self].concat($parent_nesting), $Config_config_options$1, $Config_config_option$2, $Config_default_config$6, $Config_compiler_options$8, $Config_config$10, $Config_reset$excl$11, $Config$12;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
       self.$extend(self);
       self.$private();
       
-      Opal.def(self, '$config_options', $Config_config_options$1 = function $$config_options() {
+      $def(self, '$config_options', function $$config_options() {
         var self = this, $ret_or_1 = nil;
         if (self.config_options == null) self.config_options = nil;
 
-        return (self.config_options = (function() {if ($truthy(($ret_or_1 = self.config_options))) {
-          return $ret_or_1
-        } else {
-          return $hash2([], {})
-        }; return nil; })())
-      }, $Config_config_options$1.$$arity = 0);
+        return (self.config_options = ($truthy(($ret_or_1 = self.config_options)) ? ($ret_or_1) : ($hash2([], {}))))
+      }, 0);
       
-      Opal.def(self, '$config_option', $Config_config_option$2 = function $$config_option(name, default_value, options) {
-        var $$3, $$4, self = this, compiler = nil, valid_values = nil, $writer = nil;
+      $def(self, '$config_option', function $$config_option(name, default_value, options) {
+        var self = this, compiler = nil, valid_values = nil, $writer = nil;
 
         
         
-        if (options == null) {
-          options = $hash2([], {});
-        };
+        if (options == null) options = $hash2([], {});;
         compiler = options.$fetch("compiler_option", nil);
         valid_values = options.$fetch("valid_values", [true, false]);
         
         $writer = [name, $hash2(["default", "compiler"], {"default": default_value, "compiler": compiler})];
-        $send(self.$config_options(), '[]=', Opal.to_a($writer));
+        $send(self.$config_options(), '[]=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
-        $send(self, 'define_singleton_method', [name], ($$3 = function(){var self = $$3.$$s == null ? this : $$3.$$s;
+        $send(self, 'define_singleton_method', [name], function $$1(){var self = $$1.$$s == null ? this : $$1.$$s;
 
-          return self.$config().$fetch(name, default_value)}, $$3.$$s = self, $$3.$$arity = 0, $$3));
-        return $send(self, 'define_singleton_method', ["" + (name) + "="], ($$4 = function(value){var self = $$4.$$s == null ? this : $$4.$$s, $$5;
+          return self.$config().$fetch(name, default_value)}, {$$arity: 0, $$s: self});
+        return $send(self, 'define_singleton_method', ["" + (name) + "="], function $$2(value){var self = $$2.$$s == null ? this : $$2.$$s;
 
           
           
-          if (value == null) {
-            value = nil;
-          };
-          if ($truthy($send(valid_values, 'any?', [], ($$5 = function(valid_value){var self = $$5.$$s == null ? this : $$5.$$s;
-
+          if (value == null) value = nil;;
+          if (!$truthy($send(valid_values, 'any?', [], function $$3(valid_value){
             
             
-            if (valid_value == null) {
-              valid_value = nil;
-            };
-            return valid_value['$==='](value);}, $$5.$$s = self, $$5.$$arity = 1, $$5)))) {
-          } else {
-            self.$raise($$($nesting, 'ArgumentError'), "" + ("" + "Not a valid value for option " + (self) + "." + (name) + ", provided " + (value.$inspect()) + ". ") + ("" + "Must be " + (valid_values.$inspect()) + " === " + (value.$inspect())))
+            if (valid_value == null) valid_value = nil;;
+            return valid_value['$==='](value);}, 1))) {
+            self.$raise($$('ArgumentError'), "" + ("Not a valid value for option " + (self) + "." + (name) + ", provided " + (value.$inspect()) + ". ") + ("Must be " + (valid_values.$inspect()) + " === " + (value.$inspect())))
           };
           
           $writer = [name, value];
-          $send(self.$config(), '[]=', Opal.to_a($writer));
-          return $writer[$rb_minus($writer["length"], 1)];;}, $$4.$$s = self, $$4.$$arity = 1, $$4));
-      }, $Config_config_option$2.$$arity = -3);
+          $send(self.$config(), '[]=', $to_a($writer));
+          return $writer[$rb_minus($writer["length"], 1)];;}, {$$arity: 1, $$s: self});
+      }, -3);
       self.$public();
       
-      Opal.def(self, '$default_config', $Config_default_config$6 = function $$default_config() {
-        var $$7, self = this, default_config = nil;
+      $def(self, '$default_config', function $$default_config() {
+        var self = this, default_config = nil;
 
         
         default_config = $hash2([], {});
-        $send(self.$config_options(), 'each', [], ($$7 = function(name, options){var self = $$7.$$s == null ? this : $$7.$$s, default_value = nil, $writer = nil;
+        $send(self.$config_options(), 'each', [], function $$4(name, options){var default_value = nil, $writer = nil;
 
           
           
-          if (name == null) {
-            name = nil;
-          };
+          if (name == null) name = nil;;
           
-          if (options == null) {
-            options = nil;
-          };
+          if (options == null) options = nil;;
           default_value = options.$fetch("default");
-          default_value = (function() {if ($truthy($$($nesting, 'Proc')['$==='](default_value))) {
-            return default_value.$call()
-          } else {
-            return default_value
-          }; return nil; })();
+          default_value = ($eqeqeq($$('Proc'), default_value) ? (default_value.$call()) : (default_value));
           
           $writer = [name, default_value];
-          $send(default_config, '[]=', Opal.to_a($writer));
-          return $writer[$rb_minus($writer["length"], 1)];;}, $$7.$$s = self, $$7.$$arity = 2, $$7));
+          $send(default_config, '[]=', $to_a($writer));
+          return $writer[$rb_minus($writer["length"], 1)];;}, 2);
         return default_config;
-      }, $Config_default_config$6.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$compiler_options', $Config_compiler_options$8 = function $$compiler_options() {
-        var $$9, self = this, compiler_options = nil;
+      $def(self, '$compiler_options', function $$compiler_options() {
+        var self = this, compiler_options = nil;
 
         
         compiler_options = $hash2([], {});
-        $send(self.$config_options(), 'each', [], ($$9 = function(name, options){var self = $$9.$$s == null ? this : $$9.$$s, compiler_option_name = nil, $writer = nil;
+        $send(self.$config_options(), 'each', [], function $$5(name, options){var self = $$5.$$s == null ? this : $$5.$$s, compiler_option_name = nil, $writer = nil;
 
           
           
-          if (name == null) {
-            name = nil;
-          };
+          if (name == null) name = nil;;
           
-          if (options == null) {
-            options = nil;
-          };
+          if (options == null) options = nil;;
           compiler_option_name = options.$fetch("compiler");
           
           $writer = [compiler_option_name, self.$config().$fetch(name)];
-          $send(compiler_options, '[]=', Opal.to_a($writer));
-          return $writer[$rb_minus($writer["length"], 1)];;}, $$9.$$s = self, $$9.$$arity = 2, $$9));
+          $send(compiler_options, '[]=', $to_a($writer));
+          return $writer[$rb_minus($writer["length"], 1)];;}, {$$arity: 2, $$s: self});
         return compiler_options;
-      }, $Config_compiler_options$8.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$config', $Config_config$10 = function $$config() {
-        var self = this, $ret_or_2 = nil;
+      $def(self, '$config', function $$config() {
+        var self = this, $ret_or_1 = nil;
         if (self.config == null) self.config = nil;
 
-        return (self.config = (function() {if ($truthy(($ret_or_2 = self.config))) {
-          return $ret_or_2
-        } else {
-          return self.$default_config()
-        }; return nil; })())
-      }, $Config_config$10.$$arity = 0);
+        return (self.config = ($truthy(($ret_or_1 = self.config)) ? ($ret_or_1) : (self.$default_config())))
+      }, 0);
       
-      Opal.def(self, '$reset!', $Config_reset$excl$11 = function() {
+      $def(self, '$reset!', function $Config_reset$excl$6() {
         var self = this;
 
         return (self.config = nil)
-      }, $Config_reset$excl$11.$$arity = 0);
+      }, 0);
       self.$config_option("method_missing_enabled", true, $hash2(["compiler_option"], {"compiler_option": "method_missing"}));
       self.$config_option("const_missing_enabled", true, $hash2(["compiler_option"], {"compiler_option": "const_missing"}));
       self.$config_option("arity_check_enabled", false, $hash2(["compiler_option"], {"compiler_option": "arity_check"}));
       self.$config_option("freezing_stubs_enabled", true, $hash2(["compiler_option"], {"compiler_option": "freezing"}));
+      self.$config_option("esm", false, $hash2(["compiler_option"], {"compiler_option": "esm"}));
       self.$config_option("dynamic_require_severity", "warning", $hash2(["compiler_option", "valid_values"], {"compiler_option": "dynamic_require_severity", "valid_values": ["error", "warning", "ignore"]}));
       self.$config_option("missing_require_severity", "error", $hash2(["valid_values"], {"valid_values": ["error", "warning", "ignore"]}));
       self.$config_option("irb_enabled", false, $hash2(["compiler_option"], {"compiler_option": "irb"}));
       self.$config_option("inline_operators_enabled", true, $hash2(["compiler_option"], {"compiler_option": "inline_operators"}));
       self.$config_option("source_map_enabled", true);
-      return self.$config_option("stubbed_files", $lambda(($Config$12 = function(){var self = $Config$12.$$s == null ? this : $Config$12.$$s;
-
-        return $$($nesting, 'Set').$new()}, $Config$12.$$s = self, $Config$12.$$arity = 0, $Config$12)), $hash2(["valid_values"], {"valid_values": [$$($nesting, 'Set')]}));
+      return self.$config_option("stubbed_files", $lambda(function $Config$7(){
+        return $$('Set').$new()}, 0), $hash2(["valid_values"], {"valid_values": [$$('Set')]}));
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/cache"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $truthy = Opal.truthy, $klass = Opal.klass, $send = Opal.send, $gvars = Opal.gvars, $range = Opal.range;
+Opal.modules["opal/cache"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $truthy = Opal.truthy, $not = Opal.not, $eqeq = Opal.eqeq, $defs = Opal.defs, $klass = Opal.klass, $def = Opal.def, $send = Opal.send, $rb_plus = Opal.rb_plus, $gvars = Opal.gvars, $range = Opal.range;
 
-  Opal.add_stubs(['$require', '$attr_writer', '$singleton_class', '$==', '$[]', '$!', '$find_dir', '$new', '$module_function', '$respond_to?', '$fetch', '$to_proc', '$+', '$digest', '$join', '$runtime_key', '$get', '$set', '$expand_path', '$gem_dir', '$grep', '$map', '$sort', '$size', '$to_f', '$mtime', '$to_s', '$to_i', '$hexdigest']);
+  Opal.add_stubs('require,attr_writer,singleton_class,!,find_dir,[],==,new,module_function,respond_to?,fetch,to_proc,+,digest,join,runtime_key,get,dynamic_cache_result,set,expand_path,gem_dir,grep,map,sort,size,to_f,mtime,to_s,to_i,hexdigest');
   
   self.$require("opal/paths");
   nil;
@@ -1980,114 +1715,86 @@ Opal.modules["opal/cache"] = function(Opal) {
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Opal');
 
-    var $nesting = [self].concat($parent_nesting), $Opal_cache$1;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
     self.$singleton_class().$attr_writer("cache");
-    Opal.defs(self, '$cache', $Opal_cache$1 = function $$cache() {
-      var self = this, $ret_or_1 = nil, $ret_or_2 = nil, $ret_or_3 = nil;
+    $defs(self, '$cache', function $$cache() {
+      var self = this, $ret_or_1 = nil;
       if (self.cache == null) self.cache = nil;
 
-      return (self.cache = (function() {if ($truthy(($ret_or_1 = self.cache))) {
-        return $ret_or_1
-      } else if ($truthy((function() {if ($truthy(($ret_or_2 = (function() {if ($truthy(($ret_or_3 = $$($nesting, 'RUBY_ENGINE')['$==']("opal")))) {
-        return $ret_or_3
-      } else {
-        return $$($nesting, 'ENV')['$[]']("OPAL_CACHE_DISABLE")
-      }; return nil; })()))) {
-        return $ret_or_2
-      } else {
-        return $$$($$($nesting, 'Cache'), 'FileCache').$find_dir()['$!']()
-      }; return nil; })())) {
-        return $$$($$($nesting, 'Cache'), 'NullCache').$new()
-      } else {
-        return $$$($$($nesting, 'Cache'), 'FileCache').$new()
-      }; return nil; })())
-    }, $Opal_cache$1.$$arity = 0);
+      return (self.cache = ($truthy(($ret_or_1 = self.cache)) ? ($ret_or_1) : ((($eqeq($$('RUBY_ENGINE'), "opal") || ($truthy($$('ENV')['$[]']("OPAL_CACHE_DISABLE")))) || ($not($$$($$('Cache'), 'FileCache').$find_dir()))) ? ($$$($$('Cache'), 'NullCache').$new()) : ($$$($$('Cache'), 'FileCache').$new()))))
+    }, 0);
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Cache');
 
-      var $nesting = [self].concat($parent_nesting), $Cache_fetch$3, $Cache_runtime_key$4, $Cache_digest$6;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
-      (function($base, $super, $parent_nesting) {
+      (function($base, $super) {
         var self = $klass($base, $super, 'NullCache');
 
-        var $nesting = [self].concat($parent_nesting), $NullCache_fetch$2;
-
-        return (Opal.def(self, '$fetch', $NullCache_fetch$2 = function $$fetch($a) {
-          var $post_args, $iter = $NullCache_fetch$2.$$p, $yield = $iter || nil, self = this;
+        
+        return $def(self, '$fetch', function $$fetch($a) {
+          var $post_args, $rest_arg, $yield = $$fetch.$$p || nil;
 
-          if ($iter) $NullCache_fetch$2.$$p = null;
+          delete $$fetch.$$p;
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
-          ;
+          $post_args = Opal.slice.call(arguments);
+          
+          $rest_arg = $post_args;;
           return Opal.yieldX($yield, []);;
-        }, $NullCache_fetch$2.$$arity = -1), nil) && 'fetch'
-      })($nesting[0], null, $nesting);
+        }, -1)
+      })($nesting[0], null);
       self.$module_function();
       
-      Opal.def(self, '$fetch', $Cache_fetch$3 = function $$fetch(cache, key) {
-        var $iter = $Cache_fetch$3.$$p, block = $iter || nil, self = this, data = nil, $ret_or_4 = nil, compiler = nil;
+      $def(self, '$fetch', function $$fetch(cache, key) {
+        var block = $$fetch.$$p || nil, self = this, data = nil, $ret_or_1 = nil, compiler = nil;
 
-        if ($iter) $Cache_fetch$3.$$p = null;
+        delete $$fetch.$$p;
         
-        
-        if ($iter) $Cache_fetch$3.$$p = null;;
+        ;
         if ($truthy(cache['$respond_to?']("fetch"))) {
-          return $send(cache, 'fetch', [key], block.$to_proc())};
+          return $send(cache, 'fetch', [key], block.$to_proc())
+        };
         key = $rb_plus($rb_plus(self.$digest(key.$join("/")), "-"), self.$runtime_key());
         data = cache.$get(key);
-        if ($truthy(($ret_or_4 = data))) {
-          return $ret_or_4
+        if ($truthy(($ret_or_1 = data))) {
+          return $ret_or_1
         } else {
           
           compiler = Opal.yieldX(block, []);
-          cache.$set(key, compiler);
+          if (!$truthy(compiler.$dynamic_cache_result())) {
+            cache.$set(key, compiler)
+          };
           return compiler;
         };
-      }, $Cache_fetch$3.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$runtime_key', $Cache_runtime_key$4 = function $$runtime_key() {
-        var $$5, self = this, $ret_or_5 = nil, opal_path = nil, files = nil;
+      $def(self, '$runtime_key', function $$runtime_key() {
+        var self = this, $ret_or_1 = nil, opal_path = nil, files = nil;
         if (self.runtime_key == null) self.runtime_key = nil;
         if ($gvars.LOADED_FEATURES == null) $gvars.LOADED_FEATURES = nil;
 
-        return (self.runtime_key = (function() {if ($truthy(($ret_or_5 = self.runtime_key))) {
-          return $ret_or_5
-        } else {
+        return (self.runtime_key = ($truthy(($ret_or_1 = self.runtime_key)) ? ($ret_or_1) : (((opal_path = $$('File').$expand_path("..", $$('Opal').$gem_dir())), (files = $$('Dir')['$[]']("" + (opal_path) + "/{Gemfile*,*.gemspec,lib/**/*}")), (files = $rb_plus(files, $gvars.LOADED_FEATURES.$grep(/lib\/(parser|ast)/))), self.$digest([$send(files.$sort(), 'map', [], function $$1(f){
           
-          opal_path = $$($nesting, 'File').$expand_path("..", $$($nesting, 'Opal').$gem_dir());
-          files = $$($nesting, 'Dir')['$[]']("" + (opal_path) + "/{Gemfile*,*.gemspec,lib/**/*}");
-          files = $rb_plus(files, $gvars.LOADED_FEATURES.$grep(/lib\/(parser|ast)/));
-          return self.$digest([$send(files.$sort(), 'map', [], ($$5 = function(f){var self = $$5.$$s == null ? this : $$5.$$s;
-
-            
-            
-            if (f == null) {
-              f = nil;
-            };
-            return "" + (f) + ":" + ($$($nesting, 'File').$size(f)) + ":" + ($$($nesting, 'File').$mtime(f).$to_f());}, $$5.$$s = self, $$5.$$arity = 1, $$5)), $$($nesting, 'RUBY_VERSION'), $$($nesting, 'RUBY_PATCHLEVEL')].$join("/"));
-        }; return nil; })())
-      }, $Cache_runtime_key$4.$$arity = 0);
-      return (Opal.def(self, '$digest', $Cache_digest$6 = function $$digest(string) {
-        var self = this;
-
-        return $$$($$$('::', 'Digest'), 'SHA256').$hexdigest(string)['$[]']($range(-32, -1, false)).$to_i(16).$to_s(36)
-      }, $Cache_digest$6.$$arity = 1), nil) && 'digest';
+          
+          if (f == null) f = nil;;
+          return "" + (f) + ":" + ($$('File').$size(f)) + ":" + ($$('File').$mtime(f).$to_f());}, 1), $$('RUBY_VERSION'), $$('RUBY_PATCHLEVEL')].$join("/"))))))
+      }, 0);
+      return $def(self, '$digest', function $$digest(string) {
+        
+        return $$$($$$('Digest'), 'SHA256').$hexdigest(string)['$[]']($range(-32, -1, false)).$to_i(16).$to_s(36)
+      }, 1);
     })($nesting[0], $nesting);
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/builder"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send, $hash2 = Opal.hash2, $send2 = Opal.send2, $find_super = Opal.find_super, $lambda = Opal.lambda;
+Opal.modules["opal/builder"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $defs = Opal.defs, $send = Opal.send, $hash2 = Opal.hash2, $Opal = Opal.Opal, $def = Opal.def, $to_a = Opal.to_a, $rb_plus = Opal.rb_plus, $send2 = Opal.send2, $find_super = Opal.find_super, $not = Opal.not, $lambda = Opal.lambda, $eqeqeq = Opal.eqeqeq;
 
-  Opal.add_stubs(['$require', '$include?', '$processors', '$<<', '$each', '$extensions', '$each_pair', '$public_send', '$new', '$paths', '$flatten', '$map', '$compiler_options', '$missing_require_severity', '$cache', '$build', '$to_proc', '$build_str', '$source_for', '$read', '$nil?', '$expand_path', '$expand_ext', '$processor_for', '$+', '$preload', '$requires', '$tree_requires', '$process_require', '$processed', '$raise', '$inspect', '$message', '$backtrace', '$dup', '$stubs', '$path_reader', '$prerequired', '$to_sym', '$join', '$append_paths', '$include', '$attr_reader', '$attr_accessor', '$private', '$empty?', '$to_s', '$pwd', '$dirname', '$Pathname', '$flat_map', '$required_trees', '$find', '$start_with?', '$glob', '$relative_path_from', '$match?', '$merge', '$[]', '$===', '$warn', '$already_processed', '$stub?', '$process_requires', '$expand', '$basename']);
+  Opal.add_stubs('require,include?,processors,<<,each,extensions,each_pair,public_send,new,paths,flatten,map,compiler_options,missing_require_severity,cache,build,to_proc,build_str,source_for,read,nil?,expand_path,expand_ext,processor_for,+,preload,requires,tree_requires,process_require,autoloads,processed,raise,inspect,message,backtrace,dup,stubs,path_reader,prerequired,to_sym,join,append_paths,include,attr_reader,attr_accessor,private,empty?,to_s,pwd,dirname,Pathname,flat_map,required_trees,find,start_with?,glob,relative_path_from,match?,!,merge,[],===,warn,already_processed,stub?,process_requires,expand,basename');
   
   self.$require("opal/path_reader");
   self.$require("opal/paths");
@@ -2102,221 +1809,143 @@ Opal.modules["opal/builder"] = function(Opal) {
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Builder');
 
-      var $nesting = [self].concat($parent_nesting), $Builder_processors$1, $Builder_extensions$2, $Builder_register_processor$3, $Builder_initialize$5, $Builder_build$8, $Builder_build$9, $Builder_source_for$10, $Builder_build_str$11, $Builder_build_require$13, $Builder_initialize_copy$14, $Builder_to_s$15, $Builder_source_map$16, $Builder_append_paths$17, $Builder_tree_requires$18, $Builder_processor_for$23, $Builder_read$25, $Builder_process_require$27, $Builder_expand_ext$28, $Builder_expand_path$29, $Builder_process_requires$30, $Builder_already_processed$32, $Builder_stub$ques$33, $Builder_extensions$34;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.stubs = self.$$prototype.preload = self.$$prototype.processors = self.$$prototype.path_reader = self.$$prototype.prerequired = self.$$prototype.compiler_options = self.$$prototype.missing_require_severity = self.$$prototype.cache = self.$$prototype.already_processed = nil;
+      $proto.stubs = $proto.preload = $proto.processors = $proto.path_reader = $proto.prerequired = $proto.compiler_options = $proto.missing_require_severity = $proto.cache = $proto.already_processed = nil;
       
-      Opal.defs(self, '$processors', $Builder_processors$1 = function $$processors() {
+      $defs(self, '$processors', function $$processors() {
         var self = this, $ret_or_1 = nil;
         if (self.processors == null) self.processors = nil;
 
-        return (self.processors = (function() {if ($truthy(($ret_or_1 = self.processors))) {
-          return $ret_or_1
-        } else {
-          return []
-        }; return nil; })())
-      }, $Builder_processors$1.$$arity = 0);
-      Opal.defs(self, '$extensions', $Builder_extensions$2 = function $$extensions() {
-        var self = this, $ret_or_2 = nil;
+        return (self.processors = ($truthy(($ret_or_1 = self.processors)) ? ($ret_or_1) : ([])))
+      }, 0);
+      $defs(self, '$extensions', function $$extensions() {
+        var self = this, $ret_or_1 = nil;
         if (self.extensions == null) self.extensions = nil;
 
-        return (self.extensions = (function() {if ($truthy(($ret_or_2 = self.extensions))) {
-          return $ret_or_2
-        } else {
-          return []
-        }; return nil; })())
-      }, $Builder_extensions$2.$$arity = 0);
-      Opal.defs(self, '$register_processor', $Builder_register_processor$3 = function $$register_processor(processor, processor_extensions) {
-        var $$4, self = this;
+        return (self.extensions = ($truthy(($ret_or_1 = self.extensions)) ? ($ret_or_1) : ([])))
+      }, 0);
+      $defs(self, '$register_processor', function $$register_processor(processor, processor_extensions) {
+        var self = this;
 
         
         if ($truthy(self.$processors()['$include?'](processor))) {
-          return nil};
+          return nil
+        };
         self.$processors()['$<<'](processor);
-        return $send(processor_extensions, 'each', [], ($$4 = function(ext){var self = $$4.$$s == null ? this : $$4.$$s;
+        return $send(processor_extensions, 'each', [], function $$1(ext){var self = $$1.$$s == null ? this : $$1.$$s;
 
           
           
-          if (ext == null) {
-            ext = nil;
-          };
-          return self.$extensions()['$<<'](ext);}, $$4.$$s = self, $$4.$$arity = 1, $$4));
-      }, $Builder_register_processor$3.$$arity = 2);
-      (function($base, $super, $parent_nesting) {
-        var self = $klass($base, $super, 'MissingRequire');
-
-        var $nesting = [self].concat($parent_nesting);
-
-        return nil
-      })($nesting[0], $$($nesting, 'LoadError'), $nesting);
-      (function($base, $super, $parent_nesting) {
-        var self = $klass($base, $super, 'ProcessorNotFound');
-
-        var $nesting = [self].concat($parent_nesting);
-
-        return nil
-      })($nesting[0], $$($nesting, 'LoadError'), $nesting);
+          if (ext == null) ext = nil;;
+          return self.$extensions()['$<<'](ext);}, {$$arity: 1, $$s: self});
+      }, 2);
+      $klass($nesting[0], $$('LoadError'), 'MissingRequire');
+      $klass($nesting[0], $$('LoadError'), 'ProcessorNotFound');
       
-      Opal.def(self, '$initialize', $Builder_initialize$5 = function $$initialize(options) {
-        var $$6, $$7, self = this, $ret_or_3 = nil, $ret_or_4 = nil, $ret_or_5 = nil, $ret_or_6 = nil, $ret_or_7 = nil, $ret_or_8 = nil, $ret_or_9 = nil, $ret_or_10 = nil, $ret_or_11 = nil;
+      $def(self, '$initialize', function $$initialize(options) {
+        var self = this, $ret_or_1 = nil;
 
         
         
-        if (options == null) {
-          options = nil;
-        };
-        $send((function() {if ($truthy(($ret_or_3 = options))) {
-          return $ret_or_3
-        } else {
-          return $hash2([], {})
-        }; return nil; })(), 'each_pair', [], ($$6 = function(k, v){var self = $$6.$$s == null ? this : $$6.$$s;
+        if (options == null) options = nil;;
+        $send(($truthy(($ret_or_1 = options)) ? ($ret_or_1) : ($hash2([], {}))), 'each_pair', [], function $$2(k, v){var self = $$2.$$s == null ? this : $$2.$$s;
 
           
           
-          if (k == null) {
-            k = nil;
-          };
+          if (k == null) k = nil;;
           
-          if (v == null) {
-            v = nil;
-          };
-          return self.$public_send("" + (k) + "=", v);}, $$6.$$s = self, $$6.$$arity = 2, $$6));
-        self.stubs = (function() {if ($truthy(($ret_or_4 = self.stubs))) {
-          return $ret_or_4
-        } else {
-          return []
-        }; return nil; })();
-        self.preload = (function() {if ($truthy(($ret_or_5 = self.preload))) {
-          return $ret_or_5
-        } else {
-          return []
-        }; return nil; })();
-        self.processors = (function() {if ($truthy(($ret_or_6 = self.processors))) {
-          return $ret_or_6
-        } else {
-          return $$$($$$('::', 'Opal'), 'Builder').$processors()
-        }; return nil; })();
-        self.path_reader = (function() {if ($truthy(($ret_or_7 = self.path_reader))) {
-          return $ret_or_7
-        } else {
-          return $$($nesting, 'PathReader').$new($$($nesting, 'Opal').$paths(), $send(self.$extensions(), 'map', [], ($$7 = function(e){var self = $$7.$$s == null ? this : $$7.$$s;
-
-            
-            
-            if (e == null) {
-              e = nil;
-            };
-            return ["" + "." + (e), "" + ".js." + (e)];}, $$7.$$s = self, $$7.$$arity = 1, $$7)).$flatten())
-        }; return nil; })();
-        self.prerequired = (function() {if ($truthy(($ret_or_8 = self.prerequired))) {
-          return $ret_or_8
-        } else {
-          return []
-        }; return nil; })();
-        self.compiler_options = (function() {if ($truthy(($ret_or_9 = self.compiler_options))) {
-          return $ret_or_9
-        } else {
-          return $$$($$($nesting, 'Opal'), 'Config').$compiler_options()
-        }; return nil; })();
-        self.missing_require_severity = (function() {if ($truthy(($ret_or_10 = self.missing_require_severity))) {
-          return $ret_or_10
-        } else {
-          return $$$($$($nesting, 'Opal'), 'Config').$missing_require_severity()
-        }; return nil; })();
-        self.cache = (function() {if ($truthy(($ret_or_11 = self.cache))) {
-          return $ret_or_11
-        } else {
-          return $$($nesting, 'Opal').$cache()
-        }; return nil; })();
+          if (v == null) v = nil;;
+          return self.$public_send("" + (k) + "=", v);}, {$$arity: 2, $$s: self});
+        self.stubs = ($truthy(($ret_or_1 = self.stubs)) ? ($ret_or_1) : ([]));
+        self.preload = ($truthy(($ret_or_1 = self.preload)) ? ($ret_or_1) : ([]));
+        self.processors = ($truthy(($ret_or_1 = self.processors)) ? ($ret_or_1) : ($$$($Opal, 'Builder').$processors()));
+        self.path_reader = ($truthy(($ret_or_1 = self.path_reader)) ? ($ret_or_1) : ($$('PathReader').$new($$('Opal').$paths(), $send(self.$extensions(), 'map', [], function $$3(e){
+          
+          
+          if (e == null) e = nil;;
+          return ["." + (e), ".js." + (e)];}, 1).$flatten())));
+        self.prerequired = ($truthy(($ret_or_1 = self.prerequired)) ? ($ret_or_1) : ([]));
+        self.compiler_options = ($truthy(($ret_or_1 = self.compiler_options)) ? ($ret_or_1) : ($$$($$('Opal'), 'Config').$compiler_options()));
+        self.missing_require_severity = ($truthy(($ret_or_1 = self.missing_require_severity)) ? ($ret_or_1) : ($$$($$('Opal'), 'Config').$missing_require_severity()));
+        self.cache = ($truthy(($ret_or_1 = self.cache)) ? ($ret_or_1) : ($$('Opal').$cache()));
         return (self.processed = []);
-      }, $Builder_initialize$5.$$arity = -1);
-      Opal.defs(self, '$build', $Builder_build$8 = function $$build($a) {
-        var $iter = $Builder_build$8.$$p, block = $iter || nil, $post_args, args, self = this;
+      }, -1);
+      $defs(self, '$build', function $$build($a) {
+        var block = $$build.$$p || nil, $post_args, args, self = this;
 
-        if ($iter) $Builder_build$8.$$p = null;
+        delete $$build.$$p;
         
+        ;
         
-        if ($iter) $Builder_build$8.$$p = null;;
-        
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
+        $post_args = Opal.slice.call(arguments);
         
         args = $post_args;;
-        return $send(self.$new(), 'build', Opal.to_a(args), block.$to_proc());
-      }, $Builder_build$8.$$arity = -1);
+        return $send(self.$new(), 'build', $to_a(args), block.$to_proc());
+      }, -1);
       
-      Opal.def(self, '$build', $Builder_build$9 = function $$build(path, options) {
+      $def(self, '$build', function $$build(path, options) {
         var self = this;
 
         
         
-        if (options == null) {
-          options = $hash2([], {});
-        };
+        if (options == null) options = $hash2([], {});;
         return self.$build_str(self.$source_for(path), path, options);
-      }, $Builder_build$9.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$source_for', $Builder_source_for$10 = function $$source_for(path) {
+      $def(self, '$source_for', function $$source_for(path) {
         var self = this;
 
-        return self.$read(path)
-      }, $Builder_source_for$10.$$arity = 1);
+        return self.$read(path, false)
+      }, 1);
       
-      Opal.def(self, '$build_str', $Builder_build_str$11 = function $$build_str(source, rel_path, options) {
-        var $$12, self = this, abs_path = nil, asset = nil, requires = nil, error = nil;
+      $def(self, '$build_str', function $$build_str(source, rel_path, options) {
+        var self = this, abs_path = nil, asset = nil, requires = nil, error = nil;
 
         
         
-        if (options == null) {
-          options = $hash2([], {});
-        };
+        if (options == null) options = $hash2([], {});;
         try {
           
           if ($truthy(source['$nil?']())) {
-            return nil};
+            return nil
+          };
           abs_path = self.$expand_path(rel_path);
           rel_path = self.$expand_ext(rel_path);
-          asset = self.$processor_for(source, rel_path, abs_path, options);
+          asset = self.$processor_for(source, rel_path, abs_path, false, options);
           requires = $rb_plus($rb_plus(self.$preload(), asset.$requires()), self.$tree_requires(asset, abs_path));
-          $send(requires, 'map', [], ($$12 = function(r){var self = $$12.$$s == null ? this : $$12.$$s;
+          $send(requires, 'map', [], function $$4(r){var self = $$4.$$s == null ? this : $$4.$$s;
 
             
             
-            if (r == null) {
-              r = nil;
-            };
-            return self.$process_require(r, options);}, $$12.$$s = self, $$12.$$arity = 1, $$12));
+            if (r == null) r = nil;;
+            return self.$process_require(r, asset.$autoloads(), options);}, {$$arity: 1, $$s: self});
           self.$processed()['$<<'](asset);
           return self;
         } catch ($err) {
-          if (Opal.rescue($err, [$$($nesting, 'MissingRequire')])) {(error = $err)
+          if (Opal.rescue($err, [$$('MissingRequire')])) {(error = $err)
             try {
-              return self.$raise(error, "" + "A file required by " + (rel_path.$inspect()) + " wasn't found.\n" + (error.$message()), error.$backtrace())
+              return self.$raise(error, "A file required by " + (rel_path.$inspect()) + " wasn't found.\n" + (error.$message()), error.$backtrace())
             } finally { Opal.pop_exception(); }
           } else { throw $err; }
         };
-      }, $Builder_build_str$11.$$arity = -3);
+      }, -3);
       
-      Opal.def(self, '$build_require', $Builder_build_require$13 = function $$build_require(path, options) {
+      $def(self, '$build_require', function $$build_require(path, options) {
         var self = this;
 
         
         
-        if (options == null) {
-          options = $hash2([], {});
-        };
-        return self.$process_require(path, options);
-      }, $Builder_build_require$13.$$arity = -2);
+        if (options == null) options = $hash2([], {});;
+        return self.$process_require(path, [], options);
+      }, -2);
       
-      Opal.def(self, '$initialize_copy', $Builder_initialize_copy$14 = function $$initialize_copy(other) {
-        var $iter = $Builder_initialize_copy$14.$$p, $yield = $iter || nil, self = this, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+      $def(self, '$initialize_copy', function $$initialize_copy(other) {
+        var $yield = $$initialize_copy.$$p || nil, self = this;
 
-        if ($iter) $Builder_initialize_copy$14.$$p = null;
-        // Prepare super implicit arguments
-        for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-          $zuper[$zuper_i] = arguments[$zuper_i];
-        }
+        delete $$initialize_copy.$$p;
         
-        $send2(self, $find_super(self, 'initialize_copy', $Builder_initialize_copy$14, false, true), 'initialize_copy', $zuper, $iter);
+        $send2(self, $find_super(self, 'initialize_copy', $$initialize_copy, false, true), 'initialize_copy', [other], $yield);
         self.stubs = other.$stubs().$dup();
         self.preload = other.$preload().$dup();
         self.processors = other.$processors().$dup();
@@ -2325,233 +1954,199 @@ Opal.modules["opal/builder"] = function(Opal) {
         self.compiler_options = other.$compiler_options().$dup();
         self.missing_require_severity = other.$missing_require_severity().$to_sym();
         return (self.processed = other.$processed().$dup());
-      }, $Builder_initialize_copy$14.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$to_s', $Builder_to_s$15 = function $$to_s() {
+      $def(self, '$to_s', function $$to_s() {
         var self = this;
 
         return $send(self.$processed(), 'map', [], "to_s".$to_proc()).$join("\n")
-      }, $Builder_to_s$15.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$source_map', $Builder_source_map$16 = function $$source_map() {
+      $def(self, '$source_map', function $$source_map() {
         var self = this;
 
-        return $$$($$$($$$('::', 'Opal'), 'SourceMap'), 'Index').$new($send(self.$processed(), 'map', [], "source_map".$to_proc()), $hash2(["join"], {"join": "\n"}))
-      }, $Builder_source_map$16.$$arity = 0);
+        return $$$($$$($Opal, 'SourceMap'), 'Index').$new($send(self.$processed(), 'map', [], "source_map".$to_proc()), $hash2(["join"], {"join": "\n"}))
+      }, 0);
       
-      Opal.def(self, '$append_paths', $Builder_append_paths$17 = function $$append_paths($a) {
+      $def(self, '$append_paths', function $$append_paths($a) {
         var $post_args, paths, self = this;
 
         
         
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
+        $post_args = Opal.slice.call(arguments);
         
         paths = $post_args;;
-        return $send(self.$path_reader(), 'append_paths', Opal.to_a(paths));
-      }, $Builder_append_paths$17.$$arity = -1);
-      self.$include($$($nesting, 'UseGem'));
+        return $send(self.$path_reader(), 'append_paths', $to_a(paths));
+      }, -1);
+      self.$include($$('UseGem'));
       self.$attr_reader("processed");
       self.$attr_accessor("processors", "path_reader", "stubs", "prerequired", "preload", "compiler_options", "missing_require_severity", "cache");
       self.$private();
       
-      Opal.def(self, '$tree_requires', $Builder_tree_requires$18 = function $$tree_requires(asset, asset_path) {
-        var $$19, $$20, self = this, dirname = nil, abs_base_paths = nil;
+      $def(self, '$tree_requires', function $$tree_requires(asset, asset_path) {
+        var self = this, dirname = nil, abs_base_paths = nil;
 
         
-        dirname = (function() {if ($truthy(asset_path.$to_s()['$empty?']())) {
-          return $$($nesting, 'Pathname').$pwd()
-        } else {
-          return self.$Pathname(asset_path).$expand_path().$dirname()
-        }; return nil; })();
-        abs_base_paths = $send(self.$path_reader().$paths(), 'map', [], ($$19 = function(p){var self = $$19.$$s == null ? this : $$19.$$s;
-
+        dirname = ($truthy(asset_path.$to_s()['$empty?']()) ? ($$('Pathname').$pwd()) : (self.$Pathname(asset_path).$expand_path().$dirname()));
+        abs_base_paths = $send(self.$path_reader().$paths(), 'map', [], function $$5(p){
           
           
-          if (p == null) {
-            p = nil;
-          };
-          return $$($nesting, 'File').$expand_path(p);}, $$19.$$s = self, $$19.$$arity = 1, $$19));
-        return $send(asset.$required_trees(), 'flat_map', [], ($$20 = function(tree){var self = $$20.$$s == null ? this : $$20.$$s, $$21, $$22, abs_tree_path = nil, abs_base_path = nil, entries_glob = nil;
+          if (p == null) p = nil;;
+          return $$('File').$expand_path(p);}, 1);
+        return $send(asset.$required_trees(), 'flat_map', [], function $$6(tree){var self = $$6.$$s == null ? this : $$6.$$s, abs_tree_path = nil, abs_base_path = nil, entries_glob = nil;
 
           
           
-          if (tree == null) {
-            tree = nil;
-          };
+          if (tree == null) tree = nil;;
           abs_tree_path = dirname.$join(tree).$expand_path().$to_s();
-          abs_base_path = $send(abs_base_paths, 'find', [], ($$21 = function(p){var self = $$21.$$s == null ? this : $$21.$$s;
-
+          abs_base_path = $send(abs_base_paths, 'find', [], function $$7(p){
             
             
-            if (p == null) {
-              p = nil;
-            };
-            return abs_tree_path['$start_with?'](p);}, $$21.$$s = self, $$21.$$arity = 1, $$21));
+            if (p == null) p = nil;;
+            return abs_tree_path['$start_with?'](p);}, 1);
           if ($truthy(abs_base_path)) {
             
             abs_base_path = self.$Pathname(abs_base_path);
-            entries_glob = self.$Pathname(abs_tree_path).$join("**", "" + "*{.js,}.{" + (self.$extensions().$join(",")) + "}");
-            return $send($$($nesting, 'Pathname').$glob(entries_glob), 'map', [], ($$22 = function(file){var self = $$22.$$s == null ? this : $$22.$$s;
-
+            entries_glob = self.$Pathname(abs_tree_path).$join("**", "*{.js,}.{" + (self.$extensions().$join(",")) + "}");
+            return $send($$('Pathname').$glob(entries_glob), 'map', [], function $$8(file){
               
               
-              if (file == null) {
-                file = nil;
-              };
-              return file.$relative_path_from(abs_base_path).$to_s();}, $$22.$$s = self, $$22.$$arity = 1, $$22));
+              if (file == null) file = nil;;
+              return file.$relative_path_from(abs_base_path).$to_s();}, 1);
           } else {
             return []
-          };}, $$20.$$s = self, $$20.$$arity = 1, $$20));
-      }, $Builder_tree_requires$18.$$arity = 2);
+          };}, {$$arity: 1, $$s: self});
+      }, 2);
       
-      Opal.def(self, '$processor_for', $Builder_processor_for$23 = function $$processor_for(source, rel_path, abs_path, options) {
-        var $$24, self = this, processor = nil, $ret_or_12 = nil;
+      $def(self, '$processor_for', function $$processor_for(source, rel_path, abs_path, autoload, options) {
+        var self = this, processor = nil;
 
         
-        processor = (function() {if ($truthy(($ret_or_12 = $send(self.$processors(), 'find', [], ($$24 = function(p){var self = $$24.$$s == null ? this : $$24.$$s;
-
+        processor = $send(self.$processors(), 'find', [], function $$9(p){
           
           
-          if (p == null) {
-            p = nil;
-          };
-          return p['$match?'](abs_path);}, $$24.$$s = self, $$24.$$arity = 1, $$24))))) {
-          return $ret_or_12
-        } else {
-          return self.$raise($$($nesting, 'ProcessorNotFound'), "" + "can't find processor for rel_path: " + ("" + (rel_path.$inspect()) + ", ") + ("" + "abs_path: " + (abs_path.$inspect()) + ", ") + ("" + "source: " + (source.$inspect()) + ", ") + ("" + "processors: " + (self.$processors().$inspect())))
-        }; return nil; })();
+          if (p == null) p = nil;;
+          return p['$match?'](abs_path);}, 1);
+        if (($not(processor) && ($not(autoload)))) {
+          self.$raise($$('ProcessorNotFound'), "can't find processor for rel_path: " + ("" + (rel_path.$inspect()) + ", ") + ("abs_path: " + (abs_path.$inspect()) + ", ") + ("source: " + (source.$inspect()) + ", ") + ("processors: " + (self.$processors().$inspect())))
+        };
         options = options.$merge($hash2(["cache"], {"cache": self.$cache()}));
         return processor.$new(source, rel_path, self.compiler_options.$merge(options));
-      }, $Builder_processor_for$23.$$arity = 4);
+      }, 5);
       
-      Opal.def(self, '$read', $Builder_read$25 = function $$read(path) {
-        var $$26, self = this, $ret_or_13 = nil, print_list = nil, message = nil, $case = nil;
+      $def(self, '$read', function $$read(path, autoload) {
+        var self = this, $ret_or_1 = nil, print_list = nil, message = nil, $ret_or_2 = nil;
 
-        if ($truthy(($ret_or_13 = self.$path_reader().$read(path)))) {
-          return $ret_or_13
+        if ($truthy(($ret_or_1 = self.$path_reader().$read(path)))) {
+          return $ret_or_1
         } else {
           
-          print_list = $lambda(($$26 = function(list){var self = $$26.$$s == null ? this : $$26.$$s;
-
+          print_list = $lambda(function $$10(list){
             
             
-            if (list == null) {
-              list = nil;
-            };
-            return "" + "- " + (list.$join("\n- ")) + "\n";}, $$26.$$s = self, $$26.$$arity = 1, $$26));
-          message = $rb_plus($rb_plus($rb_plus($rb_plus($rb_plus("" + "can't find file: " + (path.$inspect()) + " in:\n", print_list['$[]'](self.$path_reader().$paths())), "\nWith the following extensions:\n"), print_list['$[]'](self.$path_reader().$extensions())), "\nAnd the following processors:\n"), print_list['$[]'](self.$processors()));
-          $case = self.$missing_require_severity();
-          if ("error"['$===']($case)) {self.$raise($$($nesting, 'MissingRequire'), message)}
-          else if ("warning"['$===']($case)) {self.$warn(message)}
-          else if ("ignore"['$===']($case)) {nil};
+            if (list == null) list = nil;;
+            return "- " + (list.$join("\n- ")) + "\n";}, 1);
+          message = $rb_plus($rb_plus($rb_plus($rb_plus($rb_plus("can't find file: " + (path.$inspect()) + " in:\n", print_list['$[]'](self.$path_reader().$paths())), "\nWith the following extensions:\n"), print_list['$[]'](self.$path_reader().$extensions())), "\nAnd the following processors:\n"), print_list['$[]'](self.$processors()));
+          if (!$truthy(autoload)) {
+            if ($eqeqeq("error", ($ret_or_2 = self.$missing_require_severity()))) {
+              self.$raise($$('MissingRequire'), message)
+            } else if ($eqeqeq("warning", $ret_or_2)) {
+              self.$warn(message)
+            } else if (!$eqeqeq("ignore", $ret_or_2)) {
+              nil
+            }
+          };
           return nil;
         }
-      }, $Builder_read$25.$$arity = 1);
+      }, 2);
       
-      Opal.def(self, '$process_require', $Builder_process_require$27 = function $$process_require(rel_path, options) {
-        var self = this, source = nil, abs_path = nil, asset = nil;
+      $def(self, '$process_require', function $$process_require(rel_path, autoloads, options) {
+        var self = this, autoload = nil, source = nil, abs_path = nil, asset = nil;
 
         
         if ($truthy(self.$prerequired()['$include?'](rel_path))) {
-          return nil};
+          return nil
+        };
         if ($truthy(self.$already_processed()['$include?'](rel_path))) {
-          return nil};
+          return nil
+        };
         self.$already_processed()['$<<'](rel_path);
-        source = (function() {if ($truthy(self['$stub?'](rel_path))) {
-          return ""
-        } else {
-          return self.$read(rel_path)
-        }; return nil; })();
+        autoload = autoloads['$include?'](rel_path);
+        source = ($truthy(self['$stub?'](rel_path)) ? ("") : (self.$read(rel_path, autoload)));
         if ($truthy(source['$nil?']())) {
-          return nil};
+          return nil
+        };
         abs_path = self.$expand_path(rel_path);
         rel_path = self.$expand_ext(rel_path);
-        asset = self.$processor_for(source, rel_path, abs_path, options.$merge($hash2(["requirable"], {"requirable": true})));
-        self.$process_requires(rel_path, $rb_plus(asset.$requires(), self.$tree_requires(asset, abs_path)), options);
+        asset = self.$processor_for(source, rel_path, abs_path, autoload, options.$merge($hash2(["requirable"], {"requirable": true})));
+        self.$process_requires(rel_path, $rb_plus(asset.$requires(), self.$tree_requires(asset, abs_path)), asset.$autoloads(), options);
         return self.$processed()['$<<'](asset);
-      }, $Builder_process_require$27.$$arity = 2);
+      }, 3);
       
-      Opal.def(self, '$expand_ext', $Builder_expand_ext$28 = function $$expand_ext(path) {
+      $def(self, '$expand_ext', function $$expand_ext(path) {
         var self = this, abs_path = nil;
 
         
         abs_path = self.$path_reader().$expand(path);
         if ($truthy(abs_path)) {
-          return $$($nesting, 'File').$join($$($nesting, 'File').$dirname(path), $$($nesting, 'File').$basename(abs_path))
+          return $$('File').$join($$('File').$dirname(path), $$('File').$basename(abs_path))
         } else {
           return path
         };
-      }, $Builder_expand_ext$28.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$expand_path', $Builder_expand_path$29 = function $$expand_path(path) {
-        var self = this, $ret_or_14 = nil;
+      $def(self, '$expand_path', function $$expand_path(path) {
+        var self = this, $ret_or_1 = nil;
 
         
         if ($truthy(self['$stub?'](path))) {
-          return nil};
-        return (function() {if ($truthy(($ret_or_14 = self.$path_reader().$expand(path)))) {
-          return $ret_or_14
-        } else {
-          return $$($nesting, 'File').$expand_path(path)
-        }; return nil; })().$to_s();
-      }, $Builder_expand_path$29.$$arity = 1);
+          return nil
+        };
+        return ($truthy(($ret_or_1 = self.$path_reader().$expand(path))) ? ($ret_or_1) : ($$('File').$expand_path(path))).$to_s();
+      }, 1);
       
-      Opal.def(self, '$process_requires', $Builder_process_requires$30 = function $$process_requires(rel_path, requires, options) {
-        var $$31, self = this, error = nil;
+      $def(self, '$process_requires', function $$process_requires(rel_path, requires, autoloads, options) {
+        var self = this, error = nil;
 
         try {
-          return $send(requires, 'map', [], ($$31 = function(r){var self = $$31.$$s == null ? this : $$31.$$s;
+          return $send(requires, 'map', [], function $$11(r){var self = $$11.$$s == null ? this : $$11.$$s;
 
             
             
-            if (r == null) {
-              r = nil;
-            };
-            return self.$process_require(r, options);}, $$31.$$s = self, $$31.$$arity = 1, $$31))
+            if (r == null) r = nil;;
+            return self.$process_require(r, autoloads, options);}, {$$arity: 1, $$s: self})
         } catch ($err) {
-          if (Opal.rescue($err, [$$($nesting, 'MissingRequire')])) {(error = $err)
+          if (Opal.rescue($err, [$$('MissingRequire')])) {(error = $err)
             try {
-              return self.$raise(error, "" + "A file required by " + (rel_path.$inspect()) + " wasn't found.\n" + (error.$message()), error.$backtrace())
+              return self.$raise(error, "A file required by " + (rel_path.$inspect()) + " wasn't found.\n" + (error.$message()), error.$backtrace())
             } finally { Opal.pop_exception(); }
           } else { throw $err; }
         }
-      }, $Builder_process_requires$30.$$arity = 3);
+      }, 4);
       
-      Opal.def(self, '$already_processed', $Builder_already_processed$32 = function $$already_processed() {
-        var self = this, $ret_or_15 = nil;
+      $def(self, '$already_processed', function $$already_processed() {
+        var self = this, $ret_or_1 = nil;
 
-        return (self.already_processed = (function() {if ($truthy(($ret_or_15 = self.already_processed))) {
-          return $ret_or_15
-        } else {
-          return $$($nesting, 'Set').$new()
-        }; return nil; })())
-      }, $Builder_already_processed$32.$$arity = 0);
+        return (self.already_processed = ($truthy(($ret_or_1 = self.already_processed)) ? ($ret_or_1) : ($$('Set').$new())))
+      }, 0);
       
-      Opal.def(self, '$stub?', $Builder_stub$ques$33 = function(path) {
+      $def(self, '$stub?', function $Builder_stub$ques$12(path) {
         var self = this;
 
         return self.$stubs()['$include?'](path)
-      }, $Builder_stub$ques$33.$$arity = 1);
-      return (Opal.def(self, '$extensions', $Builder_extensions$34 = function $$extensions() {
-        var self = this;
-
-        return $$$($$$('::', 'Opal'), 'Builder').$extensions()
-      }, $Builder_extensions$34.$$arity = 0), nil) && 'extensions';
+      }, 1);
+      return $def(self, '$extensions', function $$extensions() {
+        
+        return $$$($Opal, 'Builder').$extensions()
+      }, 0);
     })($nesting[0], null, $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["ast/node"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_times(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs * rhs : lhs['$*'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $alias = Opal.alias, $hash2 = Opal.hash2, $truthy = Opal.truthy, $send = Opal.send;
-
-  Opal.add_stubs(['$attr_reader', '$to_sym', '$freeze', '$to_a', '$assign_properties', '$hash', '$class', '$eql?', '$type', '$children', '$each', '$instance_variable_set', '$protected', '$private', '$==', '$nil?', '$original_dup', '$send', '$equal?', '$respond_to?', '$to_ast', '$updated', '$+', '$*', '$fancy_type', '$is_a?', '$to_sexp', '$inspect', '$map', '$to_sexp_array', '$gsub', '$to_s']);
+Opal.modules["ast/node"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $alias = Opal.alias, $hash2 = Opal.hash2, $def = Opal.def, $truthy = Opal.truthy, $send = Opal.send, $eqeq = Opal.eqeq, $rb_plus = Opal.rb_plus, $rb_times = Opal.rb_times, $to_a = Opal.to_a;
+
+  Opal.add_stubs('attr_reader,to_sym,freeze,to_a,assign_properties,hash,class,eql?,type,children,each,instance_variable_set,protected,private,nil?,==,original_dup,send,equal?,respond_to?,to_ast,updated,+,*,fancy_type,is_a?,to_sexp,inspect,map,to_sexp_array,gsub,to_s');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'AST');
 
@@ -2560,116 +2155,78 @@ Opal.modules["ast/node"] = function(Opal) {
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Node');
 
-      var $nesting = [self].concat($parent_nesting), $Node_initialize$1, $Node_eql$ques$2, $Node_assign_properties$3, $Node_dup$5, $Node_updated$6, $Node_$eq_eq$7, $Node_concat$8, $Node_append$9, $Node_to_sexp$10, $Node_inspect$12, $Node_to_ast$14, $Node_to_sexp_array$15, $Node_deconstruct$17, $Node_fancy_type$18;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.type = self.$$prototype.children = nil;
+      $proto.type = $proto.children = nil;
       
       self.$attr_reader("type");
       self.$attr_reader("children");
       $alias(self, "to_a", "children");
       self.$attr_reader("hash");
       
-      Opal.def(self, '$initialize', $Node_initialize$1 = function $$initialize(type, children, properties) {
+      $def(self, '$initialize', function $$initialize(type, children, properties) {
         var $a, self = this;
 
         
         
-        if (children == null) {
-          children = [];
-        };
+        if (children == null) children = [];;
         
-        if (properties == null) {
-          properties = $hash2([], {});
-        };
+        if (properties == null) properties = $hash2([], {});;
         $a = [type.$to_sym(), children.$to_a().$freeze()], (self.type = $a[0]), (self.children = $a[1]), $a;
         self.$assign_properties(properties);
         self.hash = [self.type, self.children, self.$class()].$hash();
         return self.$freeze();
-      }, $Node_initialize$1.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$eql?', $Node_eql$ques$2 = function(other) {
+      $def(self, '$eql?', function $Node_eql$ques$1(other) {
         var self = this, $ret_or_1 = nil, $ret_or_2 = nil;
 
-        if ($truthy(($ret_or_1 = (function() {if ($truthy(($ret_or_2 = self.$class()['$eql?'](other.$class())))) {
-          return self.type['$eql?'](other.$type())
-        } else {
-          return $ret_or_2
-        }; return nil; })()))) {
+        if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = self.$class()['$eql?'](other.$class()))) ? (self.type['$eql?'](other.$type())) : ($ret_or_2))))) {
           return self.children['$eql?'](other.$children())
         } else {
           return $ret_or_1
         }
-      }, $Node_eql$ques$2.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$assign_properties', $Node_assign_properties$3 = function $$assign_properties(properties) {
-        var $$4, self = this;
+      $def(self, '$assign_properties', function $$assign_properties(properties) {
+        var self = this;
 
         
-        $send(properties, 'each', [], ($$4 = function(name, value){var self = $$4.$$s == null ? this : $$4.$$s;
+        $send(properties, 'each', [], function $$2(name, value){var self = $$2.$$s == null ? this : $$2.$$s;
 
           
           
-          if (name == null) {
-            name = nil;
-          };
+          if (name == null) name = nil;;
           
-          if (value == null) {
-            value = nil;
-          };
-          return self.$instance_variable_set("" + "@" + (name), value);}, $$4.$$s = self, $$4.$$arity = 2, $$4));
+          if (value == null) value = nil;;
+          return self.$instance_variable_set("@" + (name), value);}, {$$arity: 2, $$s: self});
         return nil;
-      }, $Node_assign_properties$3.$$arity = 1);
+      }, 1);
       self.$protected("assign_properties");
       $alias(self, "original_dup", "dup");
       self.$private("original_dup");
       
-      Opal.def(self, '$dup', $Node_dup$5 = function $$dup() {
+      $def(self, '$dup', function $$dup() {
         var self = this;
 
         return self
-      }, $Node_dup$5.$$arity = 0);
+      }, 0);
       $alias(self, "clone", "dup");
       
-      Opal.def(self, '$updated', $Node_updated$6 = function $$updated(type, children, properties) {
-        var self = this, new_type = nil, $ret_or_3 = nil, new_children = nil, $ret_or_4 = nil, new_properties = nil, $ret_or_5 = nil, $ret_or_6 = nil, $ret_or_7 = nil, copy = nil;
+      $def(self, '$updated', function $$updated(type, children, properties) {
+        var self = this, new_type = nil, $ret_or_1 = nil, new_children = nil, new_properties = nil, copy = nil;
 
         
         
-        if (type == null) {
-          type = nil;
-        };
+        if (type == null) type = nil;;
         
-        if (children == null) {
-          children = nil;
-        };
+        if (children == null) children = nil;;
         
-        if (properties == null) {
-          properties = nil;
-        };
-        new_type = (function() {if ($truthy(($ret_or_3 = type))) {
-          return $ret_or_3
-        } else {
-          return self.type
-        }; return nil; })();
-        new_children = (function() {if ($truthy(($ret_or_4 = children))) {
-          return $ret_or_4
-        } else {
-          return self.children
-        }; return nil; })();
-        new_properties = (function() {if ($truthy(($ret_or_5 = properties))) {
-          return $ret_or_5
-        } else {
-          return $hash2([], {})
-        }; return nil; })();
-        if ($truthy((function() {if ($truthy(($ret_or_6 = (function() {if ($truthy(($ret_or_7 = self.type['$=='](new_type)))) {
-          return self.children['$=='](new_children)
-        } else {
-          return $ret_or_7
-        }; return nil; })()))) {
-          return properties['$nil?']()
-        } else {
-          return $ret_or_6
-        }; return nil; })())) {
+        if (properties == null) properties = nil;;
+        new_type = ($truthy(($ret_or_1 = type)) ? ($ret_or_1) : (self.type));
+        new_children = ($truthy(($ret_or_1 = children)) ? ($ret_or_1) : (self.children));
+        new_properties = ($truthy(($ret_or_1 = properties)) ? ($ret_or_1) : ($hash2([], {})));
+        if ((($eqeq(self.type, new_type) && ($eqeq(self.children, new_children))) && ($truthy(properties['$nil?']())))) {
           return self
         } else {
           
@@ -2677,138 +2234,124 @@ Opal.modules["ast/node"] = function(Opal) {
           copy.$send("initialize", new_type, new_children, new_properties);
           return copy;
         };
-      }, $Node_updated$6.$$arity = -1);
+      }, -1);
       
-      Opal.def(self, '$==', $Node_$eq_eq$7 = function(other) {
-        var self = this, $ret_or_8 = nil;
+      $def(self, '$==', function $Node_$eq_eq$3(other) {
+        var self = this, $ret_or_1 = nil;
 
         if ($truthy(self['$equal?'](other))) {
           return true
         } else if ($truthy(other['$respond_to?']("to_ast"))) {
           
           other = other.$to_ast();
-          if ($truthy(($ret_or_8 = other.$type()['$=='](self.$type())))) {
+          if ($truthy(($ret_or_1 = other.$type()['$=='](self.$type())))) {
             return other.$children()['$=='](self.$children())
           } else {
-            return $ret_or_8
+            return $ret_or_1
           };
         } else {
           return false
         }
-      }, $Node_$eq_eq$7.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$concat', $Node_concat$8 = function $$concat(array) {
+      $def(self, '$concat', function $$concat(array) {
         var self = this;
 
         return self.$updated(nil, $rb_plus(self.children, array.$to_a()))
-      }, $Node_concat$8.$$arity = 1);
+      }, 1);
       $alias(self, "+", "concat");
       
-      Opal.def(self, '$append', $Node_append$9 = function $$append(element) {
+      $def(self, '$append', function $$append(element) {
         var self = this;
 
         return self.$updated(nil, $rb_plus(self.children, [element]))
-      }, $Node_append$9.$$arity = 1);
+      }, 1);
       $alias(self, "<<", "append");
       
-      Opal.def(self, '$to_sexp', $Node_to_sexp$10 = function $$to_sexp(indent) {
-        var $$11, self = this, indented = nil, sexp = nil;
+      $def(self, '$to_sexp', function $$to_sexp(indent) {
+        var self = this, indented = nil, sexp = nil;
 
         
         
-        if (indent == null) {
-          indent = 0;
-        };
+        if (indent == null) indent = 0;;
         indented = $rb_times("  ", indent);
         sexp = "" + (indented) + "(" + (self.$fancy_type());
-        $send(self.$children(), 'each', [], ($$11 = function(child){var self = $$11.$$s == null ? this : $$11.$$s;
-
+        $send(self.$children(), 'each', [], function $$4(child){
           
           
-          if (child == null) {
-            child = nil;
-          };
-          if ($truthy(child['$is_a?']($$($nesting, 'Node')))) {
-            return (sexp = $rb_plus(sexp, "" + "\n" + (child.$to_sexp($rb_plus(indent, 1)))))
+          if (child == null) child = nil;;
+          if ($truthy(child['$is_a?']($$('Node')))) {
+            return (sexp = $rb_plus(sexp, "\n" + (child.$to_sexp($rb_plus(indent, 1)))))
           } else {
-            return (sexp = $rb_plus(sexp, "" + " " + (child.$inspect())))
-          };}, $$11.$$s = self, $$11.$$arity = 1, $$11));
+            return (sexp = $rb_plus(sexp, " " + (child.$inspect())))
+          };}, 1);
         sexp = $rb_plus(sexp, ")");
         return sexp;
-      }, $Node_to_sexp$10.$$arity = -1);
+      }, -1);
       $alias(self, "to_s", "to_sexp");
       
-      Opal.def(self, '$inspect', $Node_inspect$12 = function $$inspect(indent) {
-        var $$13, self = this, indented = nil, sexp = nil;
+      $def(self, '$inspect', function $$inspect(indent) {
+        var self = this, indented = nil, sexp = nil;
 
         
         
-        if (indent == null) {
-          indent = 0;
-        };
+        if (indent == null) indent = 0;;
         indented = $rb_times("  ", indent);
         sexp = "" + (indented) + "s(:" + (self.type);
-        $send(self.$children(), 'each', [], ($$13 = function(child){var self = $$13.$$s == null ? this : $$13.$$s;
-
+        $send(self.$children(), 'each', [], function $$5(child){
           
           
-          if (child == null) {
-            child = nil;
-          };
-          if ($truthy(child['$is_a?']($$($nesting, 'Node')))) {
-            return (sexp = $rb_plus(sexp, "" + ",\n" + (child.$inspect($rb_plus(indent, 1)))))
+          if (child == null) child = nil;;
+          if ($truthy(child['$is_a?']($$('Node')))) {
+            return (sexp = $rb_plus(sexp, ",\n" + (child.$inspect($rb_plus(indent, 1)))))
           } else {
-            return (sexp = $rb_plus(sexp, "" + ", " + (child.$inspect())))
-          };}, $$13.$$s = self, $$13.$$arity = 1, $$13));
+            return (sexp = $rb_plus(sexp, ", " + (child.$inspect())))
+          };}, 1);
         sexp = $rb_plus(sexp, ")");
         return sexp;
-      }, $Node_inspect$12.$$arity = -1);
+      }, -1);
       
-      Opal.def(self, '$to_ast', $Node_to_ast$14 = function $$to_ast() {
+      $def(self, '$to_ast', function $$to_ast() {
         var self = this;
 
         return self
-      }, $Node_to_ast$14.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$to_sexp_array', $Node_to_sexp_array$15 = function $$to_sexp_array() {
-        var $$16, self = this, children_sexp_arrs = nil;
+      $def(self, '$to_sexp_array', function $$to_sexp_array() {
+        var self = this, children_sexp_arrs = nil;
 
         
-        children_sexp_arrs = $send(self.$children(), 'map', [], ($$16 = function(child){var self = $$16.$$s == null ? this : $$16.$$s;
-
+        children_sexp_arrs = $send(self.$children(), 'map', [], function $$6(child){
           
           
-          if (child == null) {
-            child = nil;
-          };
-          if ($truthy(child['$is_a?']($$($nesting, 'Node')))) {
+          if (child == null) child = nil;;
+          if ($truthy(child['$is_a?']($$('Node')))) {
             return child.$to_sexp_array()
           } else {
             return child
-          };}, $$16.$$s = self, $$16.$$arity = 1, $$16));
-        return [self.$type()].concat(Opal.to_a(children_sexp_arrs));
-      }, $Node_to_sexp_array$15.$$arity = 0);
+          };}, 1);
+        return [self.$type()].concat($to_a(children_sexp_arrs));
+      }, 0);
       
-      Opal.def(self, '$deconstruct', $Node_deconstruct$17 = function $$deconstruct() {
+      $def(self, '$deconstruct', function $$deconstruct() {
         var self = this;
 
-        return [self.$type()].concat(Opal.to_a(self.$children()))
-      }, $Node_deconstruct$17.$$arity = 0);
+        return [self.$type()].concat($to_a(self.$children()))
+      }, 0);
       self.$protected();
-      return (Opal.def(self, '$fancy_type', $Node_fancy_type$18 = function $$fancy_type() {
+      return $def(self, '$fancy_type', function $$fancy_type() {
         var self = this;
 
         return self.type.$to_s().$gsub("_", "-")
-      }, $Node_fancy_type$18.$$arity = 0), nil) && 'fancy_type';
+      }, 0);
     })($nesting[0], null, $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["ast/processor/mixin"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send;
+Opal.modules["ast/processor/mixin"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $def = Opal.def, $send = Opal.send;
 
-  Opal.add_stubs(['$nil?', '$to_ast', '$type', '$respond_to?', '$send', '$handler_missing', '$map', '$to_a', '$process']);
+  Opal.add_stubs('nil?,to_ast,type,respond_to?,send,handler_missing,map,to_a,process');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'AST');
 
@@ -2819,58 +2362,55 @@ Opal.modules["ast/processor/mixin"] = function(Opal) {
 
       var $nesting = [self].concat($parent_nesting);
 
-      return (function($base, $parent_nesting) {
+      return (function($base) {
         var self = $module($base, 'Mixin');
 
-        var $nesting = [self].concat($parent_nesting), $Mixin_process$1, $Mixin_process_all$2, $Mixin_handler_missing$4;
-
         
         
-        Opal.def(self, '$process', $Mixin_process$1 = function $$process(node) {
+        
+        $def(self, '$process', function $$process(node) {
           var self = this, on_handler = nil, new_node = nil;
 
           
           if ($truthy(node['$nil?']())) {
-            return nil};
+            return nil
+          };
           node = node.$to_ast();
-          on_handler = "" + "on_" + (node.$type());
+          on_handler = "on_" + (node.$type());
           if ($truthy(self['$respond_to?'](on_handler))) {
             new_node = self.$send(on_handler, node)
           } else {
             new_node = self.$handler_missing(node)
           };
           if ($truthy(new_node)) {
-            node = new_node};
+            node = new_node
+          };
           return node;
-        }, $Mixin_process$1.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$process_all', $Mixin_process_all$2 = function $$process_all(nodes) {
-          var $$3, self = this;
+        $def(self, '$process_all', function $$process_all(nodes) {
+          var self = this;
 
-          return $send(nodes.$to_a(), 'map', [], ($$3 = function(node){var self = $$3.$$s == null ? this : $$3.$$s;
+          return $send(nodes.$to_a(), 'map', [], function $$1(node){var self = $$1.$$s == null ? this : $$1.$$s;
 
             
             
-            if (node == null) {
-              node = nil;
-            };
-            return self.$process(node);}, $$3.$$s = self, $$3.$$arity = 1, $$3))
-        }, $Mixin_process_all$2.$$arity = 1);
-        return (Opal.def(self, '$handler_missing', $Mixin_handler_missing$4 = function $$handler_missing(node) {
-          var self = this;
-
+            if (node == null) node = nil;;
+            return self.$process(node);}, {$$arity: 1, $$s: self})
+        }, 1);
+        return $def(self, '$handler_missing', function $$handler_missing(node) {
+          
           return nil
-        }, $Mixin_handler_missing$4.$$arity = 1), nil) && 'handler_missing';
-      })($nesting[0], $nesting)
+        }, 1);
+      })($nesting[0])
     })($nesting[0], null, $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["ast/processor"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass;
+Opal.modules["ast/processor"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass;
 
-  Opal.add_stubs(['$require', '$include']);
+  Opal.add_stubs('require,include');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'AST');
 
@@ -2879,20 +2419,19 @@ Opal.modules["ast/processor"] = function(Opal) {
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Processor');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
       self.$require("ast/processor/mixin");
-      return self.$include($$($nesting, 'Mixin'));
+      return self.$include($$('Mixin'));
     })($nesting[0], null, $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["ast/sexp"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module;
+Opal.modules["ast/sexp"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $def = Opal.def;
 
-  Opal.add_stubs(['$new']);
+  Opal.add_stubs('new');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'AST');
 
@@ -2901,47 +2440,41 @@ Opal.modules["ast/sexp"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Sexp');
 
-      var $nesting = [self].concat($parent_nesting), $Sexp_s$1;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (Opal.def(self, '$s', $Sexp_s$1 = function $$s(type, $a) {
-        var $post_args, children, self = this;
+      return $def(self, '$s', function $$s(type, $a) {
+        var $post_args, children;
 
         
         
-        $post_args = Opal.slice.call(arguments, 1, arguments.length);
+        $post_args = Opal.slice.call(arguments, 1);
         
         children = $post_args;;
-        return $$($nesting, 'Node').$new(type, children);
-      }, $Sexp_s$1.$$arity = -2), nil) && 's'
+        return $$('Node').$new(type, children);
+      }, -2)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["ast"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module;
+Opal.modules["ast"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module;
 
-  Opal.add_stubs(['$require']);
-  return (function($base, $parent_nesting) {
+  Opal.add_stubs('require');
+  return (function($base) {
     var self = $module($base, 'AST');
 
-    var $nesting = [self].concat($parent_nesting);
-
+    
     
     self.$require("ast/node");
     self.$require("ast/processor");
     return self.$require("ast/sexp");
-  })($nesting[0], $nesting)
+  })($nesting[0])
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/ast/node"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $alias = Opal.alias, $truthy = Opal.truthy, $send = Opal.send;
+Opal.modules["parser/ast/node"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $alias = Opal.alias, $truthy = Opal.truthy, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $def = Opal.def;
 
-  Opal.add_stubs(['$attr_reader', '$[]', '$frozen?', '$dup', '$node=', '$-']);
+  Opal.add_stubs('attr_reader,[],frozen?,dup,node=,-');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -2952,40 +2485,39 @@ Opal.modules["parser/ast/node"] = function(Opal) {
 
       var $nesting = [self].concat($parent_nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'Node');
 
-        var $nesting = [self].concat($parent_nesting), $Node_assign_properties$1;
-
+        
         
         self.$attr_reader("location");
         $alias(self, "loc", "location");
-        return (Opal.def(self, '$assign_properties', $Node_assign_properties$1 = function $$assign_properties(properties) {
+        return $def(self, '$assign_properties', function $$assign_properties(properties) {
           var self = this, location = nil, $writer = nil;
 
           if ($truthy((location = properties['$[]']("location")))) {
             
             if ($truthy(location['$frozen?']())) {
-              location = location.$dup()};
+              location = location.$dup()
+            };
             
             $writer = [self];
-            $send(location, 'node=', Opal.to_a($writer));
+            $send(location, 'node=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
             return (self.location = location);
           } else {
             return nil
           }
-        }, $Node_assign_properties$1.$$arity = 1), nil) && 'assign_properties';
-      })($nesting[0], $$$($$$('::', 'AST'), 'Node'), $nesting)
+        }, 1);
+      })($nesting[0], $$$($$$('AST'), 'Node'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/ast/node"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $hash2 = Opal.hash2, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["opal/ast/node"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $hash2 = Opal.hash2, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$attr_reader', '$[]', '$frozen?', '$dup', '$merge!', '$loc', '$line', '$column']);
+  Opal.add_stubs('require,attr_reader,[],frozen?,dup,merge!,loc,line,column');
   
   self.$require("ast");
   self.$require("parser/ast/node");
@@ -2999,40 +2531,33 @@ Opal.modules["opal/ast/node"] = function(Opal) {
 
       var $nesting = [self].concat($parent_nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'Node');
 
-        var $nesting = [self].concat($parent_nesting), $Node_assign_properties$1, $Node_line$2, $Node_column$3;
+        var $proto = self.$$prototype;
 
-        self.$$prototype.meta = nil;
+        $proto.meta = nil;
         
         self.$attr_reader("meta");
         
-        Opal.def(self, '$assign_properties', $Node_assign_properties$1 = function $$assign_properties(properties) {
-          var $iter = $Node_assign_properties$1.$$p, $yield = $iter || nil, self = this, meta = nil, $ret_or_1 = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        $def(self, '$assign_properties', function $$assign_properties(properties) {
+          var $yield = $$assign_properties.$$p || nil, self = this, meta = nil, $ret_or_1 = nil;
 
-          if ($iter) $Node_assign_properties$1.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$assign_properties.$$p;
           
           if ($truthy((meta = properties['$[]']("meta")))) {
             
             if ($truthy(meta['$frozen?']())) {
-              meta = meta.$dup()};
+              meta = meta.$dup()
+            };
             self.meta['$merge!'](meta);
           } else {
-            self.meta = (function() {if ($truthy(($ret_or_1 = self.meta))) {
-              return $ret_or_1
-            } else {
-              return $hash2([], {})
-            }; return nil; })()
+            self.meta = ($truthy(($ret_or_1 = self.meta)) ? ($ret_or_1) : ($hash2([], {})))
           };
-          return $send2(self, $find_super(self, 'assign_properties', $Node_assign_properties$1, false, true), 'assign_properties', $zuper, $iter);
-        }, $Node_assign_properties$1.$$arity = 1);
+          return $send2(self, $find_super(self, 'assign_properties', $$assign_properties, false, true), 'assign_properties', [properties], $yield);
+        }, 1);
         
-        Opal.def(self, '$line', $Node_line$2 = function $$line() {
+        $def(self, '$line', function $$line() {
           var self = this;
 
           if ($truthy(self.$loc())) {
@@ -3040,8 +2565,8 @@ Opal.modules["opal/ast/node"] = function(Opal) {
           } else {
             return nil
           }
-        }, $Node_line$2.$$arity = 0);
-        return (Opal.def(self, '$column', $Node_column$3 = function $$column() {
+        }, 0);
+        return $def(self, '$column', function $$column() {
           var self = this;
 
           if ($truthy(self.$loc())) {
@@ -3049,122 +2574,86 @@ Opal.modules["opal/ast/node"] = function(Opal) {
           } else {
             return nil
           }
-        }, $Node_column$3.$$arity = 0), nil) && 'column';
-      })($nesting[0], $$$($$$($$$('::', 'Parser'), 'AST'), 'Node'), $nesting)
+        }, 0);
+      })($nesting[0], $$$($$$($$$('Parser'), 'AST'), 'Node'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["racc/parser"] = function(Opal) {
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_ge(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs >= rhs : lhs['$>='](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_le(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs <= rhs : lhs['$<='](rhs);
-  }
-  function $rb_times(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs * rhs : lhs['$*'](rhs);
-  }
-  var $a, self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $gvars = Opal.gvars, $send = Opal.send;
-
-  Opal.add_stubs(['$[]', '$class', '$<', '$size', '$[]=', '$-', '$__send__', '$_racc_setup', '$raise', '$_racc_init_sysvars', '$catch', '$!=', '$next_token', '$racc_read_token', '$+', '$>=', '$==', '$_racc_evalact', '$!', '$>', '$push', '$racc_shift', '$-@', '$_racc_do_reduce', '$===', '$racc_accept', '$throw', '$on_error', '$<=', '$pop', '$racc_e_pop', '$inspect', '$racc_next_state', '$*', '$racc_reduce', '$sprintf', '$token_to_str', '$print', '$racc_token2str', '$puts', '$racc_print_stacks', '$empty?', '$each', '$racc_print_states', '$each_index']);
+Opal.modules["racc/parser"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $a, $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $const_set = Opal.const_set, $defs = Opal.defs, $gvars = Opal.gvars, $rb_lt = Opal.rb_lt, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $def = Opal.def, $to_ary = Opal.to_ary, $neqeq = Opal.neqeq, $rb_plus = Opal.rb_plus, $eqeq = Opal.eqeq, $rb_ge = Opal.rb_ge, $rb_gt = Opal.rb_gt, $eqeqeq = Opal.eqeqeq, $rb_le = Opal.rb_le, $rb_times = Opal.rb_times;
+
+  Opal.add_stubs('[],class,<,size,[]=,-,__send__,_racc_setup,raise,_racc_init_sysvars,catch,!=,next_token,racc_read_token,+,==,>=,_racc_evalact,!,>,push,racc_shift,-@,_racc_do_reduce,===,racc_accept,throw,on_error,<=,pop,racc_e_pop,inspect,racc_next_state,*,racc_reduce,sprintf,token_to_str,print,racc_token2str,puts,racc_print_stacks,empty?,each,racc_print_states,each_index');
   
   (function($base, $parent_nesting) {
     var self = $module($base, 'Racc');
 
-    var $nesting = [self].concat($parent_nesting);
-
-    return (function($base, $super, $parent_nesting) {
-      var self = $klass($base, $super, 'ParseError');
-
-      var $nesting = [self].concat($parent_nesting);
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return nil
-    })($nesting[0], $$($nesting, 'StandardError'), $nesting)
+    return ($klass($nesting[0], $$('StandardError'), 'ParseError'), nil)
   })($nesting[0], $nesting);
-  if ($truthy((($a = $$$('::', 'ParseError', 'skip_raise')) ? 'constant' : nil))) {
-  } else {
-    Opal.const_set($nesting[0], 'ParseError', $$$($$($nesting, 'Racc'), 'ParseError'))
+  if (!$truthy((($a = $$$('::', 'ParseError', 'skip_raise')) ? 'constant' : nil))) {
+    $const_set($nesting[0], 'ParseError', $$$($$('Racc'), 'ParseError'))
   };
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Racc');
 
-    var $nesting = [self].concat($parent_nesting), $a;
+    var $a, $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
-    if ($truthy((($a = $$($nesting, 'Racc_No_Extensions', 'skip_raise')) ? 'constant' : nil))) {
-    } else {
-      Opal.const_set($nesting[0], 'Racc_No_Extensions', false)
+    if (!$truthy((($a = $$('Racc_No_Extensions', 'skip_raise')) ? 'constant' : nil))) {
+      $const_set($nesting[0], 'Racc_No_Extensions', false)
     };
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Parser');
 
-      var $nesting = [self].concat($parent_nesting), $Parser_racc_runtime_type$1, $Parser__racc_setup$2, $Parser__racc_init_sysvars$3, $Parser_do_parse$4, $Parser_next_token$5, $Parser__racc_do_parse_rb$6, $Parser_yyparse$8, $Parser__racc_yyparse_rb$9, $Parser__racc_evalact$12, $Parser__racc_do_reduce$14, $Parser_on_error$15, $Parser_yyerror$16, $Parser_yyaccept$17, $Parser_yyerrok$18, $Parser_racc_read_token$19, $Parser_racc_shift$20, $Parser_racc_reduce$21, $Parser_racc_accept$23, $Parser_racc_e_pop$24, $Parser_racc_next_state$25, $Parser_racc_print_stacks$26, $Parser_racc_print_states$28, $Parser_racc_token2str$30, $Parser_token_to_str$31;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.yydebug = self.$$prototype.racc_debug_out = self.$$prototype.racc_error_status = self.$$prototype.racc_t = self.$$prototype.racc_vstack = self.$$prototype.racc_val = self.$$prototype.racc_state = self.$$prototype.racc_tstack = nil;
+      $proto.yydebug = $proto.racc_debug_out = $proto.racc_error_status = $proto.racc_t = $proto.racc_vstack = $proto.racc_val = $proto.racc_state = $proto.racc_tstack = nil;
       
-      Opal.const_set($nesting[0], 'Racc_Runtime_Version', "1.4.6");
-      Opal.const_set($nesting[0], 'Racc_Runtime_Revision', ["originalRevision:", "1.8"]['$[]'](1));
-      Opal.const_set($nesting[0], 'Racc_Runtime_Core_Version_R', "1.4.6");
-      Opal.const_set($nesting[0], 'Racc_Runtime_Core_Revision_R', ["originalRevision:", "1.8"]['$[]'](1));
-      Opal.const_set($nesting[0], 'Racc_Main_Parsing_Routine', "_racc_do_parse_rb");
-      Opal.const_set($nesting[0], 'Racc_YY_Parse_Method', "_racc_yyparse_rb");
-      Opal.const_set($nesting[0], 'Racc_Runtime_Core_Version', $$($nesting, 'Racc_Runtime_Core_Version_R'));
-      Opal.const_set($nesting[0], 'Racc_Runtime_Core_Revision', $$($nesting, 'Racc_Runtime_Core_Revision_R'));
-      Opal.const_set($nesting[0], 'Racc_Runtime_Type', "ruby");
-      Opal.defs($$($nesting, 'Parser'), '$racc_runtime_type', $Parser_racc_runtime_type$1 = function $$racc_runtime_type() {
-        var self = this;
-
-        return $$($nesting, 'Racc_Runtime_Type')
-      }, $Parser_racc_runtime_type$1.$$arity = 0);
+      $const_set($nesting[0], 'Racc_Runtime_Version', "1.4.6");
+      $const_set($nesting[0], 'Racc_Runtime_Revision', ["originalRevision:", "1.8"]['$[]'](1));
+      $const_set($nesting[0], 'Racc_Runtime_Core_Version_R', "1.4.6");
+      $const_set($nesting[0], 'Racc_Runtime_Core_Revision_R', ["originalRevision:", "1.8"]['$[]'](1));
+      $const_set($nesting[0], 'Racc_Main_Parsing_Routine', "_racc_do_parse_rb");
+      $const_set($nesting[0], 'Racc_YY_Parse_Method', "_racc_yyparse_rb");
+      $const_set($nesting[0], 'Racc_Runtime_Core_Version', $$('Racc_Runtime_Core_Version_R'));
+      $const_set($nesting[0], 'Racc_Runtime_Core_Revision', $$('Racc_Runtime_Core_Revision_R'));
+      $const_set($nesting[0], 'Racc_Runtime_Type', "ruby");
+      $defs($$('Parser'), '$racc_runtime_type', function $$racc_runtime_type() {
+        
+        return $$('Racc_Runtime_Type')
+      }, 0);
       
-      Opal.def(self, '$_racc_setup', $Parser__racc_setup$2 = function $$_racc_setup() {
+      $def(self, '$_racc_setup', function $$_racc_setup() {
         var $a, $b, self = this, $ret_or_1 = nil, arg = nil, $writer = nil;
         if ($gvars.stderr == null) $gvars.stderr = nil;
 
         
-        if ($truthy($$$(self.$class(), 'Racc_debug_parser'))) {
-        } else {
+        if (!$truthy($$$(self.$class(), 'Racc_debug_parser'))) {
           self.yydebug = false
         };
-        if ($truthy((($a = self['yydebug'], $a != null && $a !== nil) ? 'instance-variable' : nil))) {
-        } else {
+        if (!$truthy((($a = self['yydebug'], $a != null && $a !== nil) ? 'instance-variable' : nil))) {
           self.yydebug = false
         };
         if ($truthy(self.yydebug)) {
           
-          if ($truthy((($b = self['racc_debug_out'], $b != null && $b !== nil) ? 'instance-variable' : nil))) {
-          } else {
+          if (!$truthy((($b = self['racc_debug_out'], $b != null && $b !== nil) ? 'instance-variable' : nil))) {
             self.racc_debug_out = $gvars.stderr
           };
-          self.racc_debug_out = (function() {if ($truthy(($ret_or_1 = self.racc_debug_out))) {
-            return $ret_or_1
-          } else {
-            return $gvars.stderr
-          }; return nil; })();};
+          self.racc_debug_out = ($truthy(($ret_or_1 = self.racc_debug_out)) ? ($ret_or_1) : ($gvars.stderr));
+        };
         arg = $$$(self.$class(), 'Racc_arg');
         if ($truthy($rb_lt(arg.$size(), 14))) {
           
           $writer = [13, true];
-          $send(arg, '[]=', Opal.to_a($writer));
-          $writer[$rb_minus($writer["length"], 1)];};
+          $send(arg, '[]=', $to_a($writer));
+          $writer[$rb_minus($writer["length"], 1)];
+        };
         return arg;
-      }, $Parser__racc_setup$2.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$_racc_init_sysvars', $Parser__racc_init_sysvars$3 = function $$_racc_init_sysvars() {
+      $def(self, '$_racc_init_sysvars', function $$_racc_init_sysvars() {
         var self = this;
 
         
@@ -3176,28 +2665,28 @@ Opal.modules["racc/parser"] = function(Opal) {
         self.racc_read_next = true;
         self.racc_user_yyerror = false;
         return (self.racc_error_status = 0);
-      }, $Parser__racc_init_sysvars$3.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$do_parse', $Parser_do_parse$4 = function $$do_parse() {
+      $def(self, '$do_parse', function $$do_parse() {
         var self = this;
 
-        return self.$__send__($$($nesting, 'Racc_Main_Parsing_Routine'), self.$_racc_setup(), false)
-      }, $Parser_do_parse$4.$$arity = 0);
+        return self.$__send__($$('Racc_Main_Parsing_Routine'), self.$_racc_setup(), false)
+      }, 0);
       
-      Opal.def(self, '$next_token', $Parser_next_token$5 = function $$next_token() {
+      $def(self, '$next_token', function $$next_token() {
         var self = this;
 
-        return self.$raise($$($nesting, 'NotImplementedError'), "" + (self.$class()) + "#next_token is not defined")
-      }, $Parser_next_token$5.$$arity = 0);
+        return self.$raise($$('NotImplementedError'), "" + (self.$class()) + "#next_token is not defined")
+      }, 0);
       
-      Opal.def(self, '$_racc_do_parse_rb', $Parser__racc_do_parse_rb$6 = function $$_racc_do_parse_rb(arg, in_debug) {
-        var $a, $b, $$7, self = this, action_table = nil, action_check = nil, action_default = nil, action_pointer = nil, _ = nil, token_table = nil, tok = nil, act = nil, i = nil;
+      $def(self, '$_racc_do_parse_rb', function $$_racc_do_parse_rb(arg, in_debug) {
+        var $a, $b, self = this, action_table = nil, action_check = nil, action_default = nil, action_pointer = nil, _ = nil, token_table = nil, tok = nil, act = nil, i = nil;
 
         
-        $b = arg, $a = Opal.to_ary($b), (action_table = ($a[0] == null ? nil : $a[0])), (action_check = ($a[1] == null ? nil : $a[1])), (action_default = ($a[2] == null ? nil : $a[2])), (action_pointer = ($a[3] == null ? nil : $a[3])), (_ = ($a[4] == null ? nil : $a[4])), (_ = ($a[5] == null ? nil : $a[5])), (_ = ($a[6] == null ? nil : $a[6])), (_ = ($a[7] == null ? nil : $a[7])), (_ = ($a[8] == null ? nil : $a[8])), (_ = ($a[9] == null ? nil : $a[9])), (token_table = ($a[10] == null ? nil : $a[10])), (_ = ($a[11] == null ? nil : $a[11])), (_ = ($a[12] == null ? nil : $a[12])), (_ = ($a[13] == null ? nil : $a[13])), $b;
+        $b = arg, $a = $to_ary($b), (action_table = ($a[0] == null ? nil : $a[0])), (action_check = ($a[1] == null ? nil : $a[1])), (action_default = ($a[2] == null ? nil : $a[2])), (action_pointer = ($a[3] == null ? nil : $a[3])), (_ = ($a[4] == null ? nil : $a[4])), (_ = ($a[5] == null ? nil : $a[5])), (_ = ($a[6] == null ? nil : $a[6])), (_ = ($a[7] == null ? nil : $a[7])), (_ = ($a[8] == null ? nil : $a[8])), (_ = ($a[9] == null ? nil : $a[9])), (token_table = ($a[10] == null ? nil : $a[10])), (_ = ($a[11] == null ? nil : $a[11])), (_ = ($a[12] == null ? nil : $a[12])), (_ = ($a[13] == null ? nil : $a[13])), $b;
         self.$_racc_init_sysvars();
         tok = (act = (i = nil));
-        return $send(self, 'catch', ["racc_end_parse"], ($$7 = function(){var self = $$7.$$s == null ? this : $$7.$$s, $c, $d, $e, $ret_or_2 = nil, $ret_or_3 = nil, $ret_or_4 = nil;
+        return $send(self, 'catch', ["racc_end_parse"], function $$1(){var $c, $d, $e, self = $$1.$$s == null ? this : $$1.$$s, $ret_or_1 = nil;
           if (self.racc_state == null) self.racc_state = nil;
           if (self.racc_read_next == null) self.racc_read_next = nil;
           if (self.racc_t == null) self.racc_t = nil;
@@ -3209,32 +2698,22 @@ Opal.modules["racc/parser"] = function(Opal) {
             if ($truthy((i = action_pointer['$[]'](self.racc_state['$[]'](-1))))) {
               
               if ($truthy(self.racc_read_next)) {
-                if ($truthy(self.racc_t['$!='](0))) {
+                if ($neqeq(self.racc_t, 0)) {
                   
-                  $e = self.$next_token(), $d = Opal.to_ary($e), (tok = ($d[0] == null ? nil : $d[0])), (self.racc_val = ($d[1] == null ? nil : $d[1])), $e;
+                  $e = self.$next_token(), $d = $to_ary($e), (tok = ($d[0] == null ? nil : $d[0])), (self.racc_val = ($d[1] == null ? nil : $d[1])), $e;
                   if ($truthy(tok)) {
-                    self.racc_t = (function() {if ($truthy(($ret_or_2 = token_table['$[]'](tok)))) {
-                      return $ret_or_2
-                    } else {
-                      return 1
-                    }; return nil; })()
+                    self.racc_t = ($truthy(($ret_or_1 = token_table['$[]'](tok))) ? ($ret_or_1) : (1))
                   } else {
                     self.racc_t = 0
                   };
                   if ($truthy(self.yydebug)) {
-                    self.$racc_read_token(self.racc_t, tok, self.racc_val)};
-                  self.racc_read_next = false;}};
+                    self.$racc_read_token(self.racc_t, tok, self.racc_val)
+                  };
+                  self.racc_read_next = false;
+                }
+              };
               i = $rb_plus(i, self.racc_t);
-              if ($truthy((function() {if ($truthy(($ret_or_3 = (function() {if ($truthy(($ret_or_4 = $rb_ge(i, 0)))) {
-                return (act = action_table['$[]'](i))
-              } else {
-                return $ret_or_4
-              }; return nil; })()))) {
-                return action_check['$[]'](i)['$=='](self.racc_state['$[]'](-1))
-              } else {
-                return $ret_or_3
-              }; return nil; })())) {
-              } else {
+              if (!(($truthy($rb_ge(i, 0)) && ($truthy((act = action_table['$[]'](i))))) && ($eqeq(action_check['$[]'](i), self.racc_state['$[]'](-1))))) {
                 act = action_default['$[]'](self.racc_state['$[]'](-1))
               };
             } else {
@@ -3243,24 +2722,24 @@ Opal.modules["racc/parser"] = function(Opal) {
             while ($truthy((act = self.$_racc_evalact(act, arg)))) {
               
             };
-          }}, $$7.$$s = self, $$7.$$arity = 0, $$7));
-      }, $Parser__racc_do_parse_rb$6.$$arity = 2);
+          }}, {$$arity: 0, $$s: self});
+      }, 2);
       
-      Opal.def(self, '$yyparse', $Parser_yyparse$8 = function $$yyparse(recv, mid) {
+      $def(self, '$yyparse', function $$yyparse(recv, mid) {
         var self = this;
 
-        return self.$__send__($$($nesting, 'Racc_YY_Parse_Method'), recv, mid, self.$_racc_setup(), true)
-      }, $Parser_yyparse$8.$$arity = 2);
+        return self.$__send__($$('Racc_YY_Parse_Method'), recv, mid, self.$_racc_setup(), true)
+      }, 2);
       
-      Opal.def(self, '$_racc_yyparse_rb', $Parser__racc_yyparse_rb$9 = function $$_racc_yyparse_rb(recv, mid, arg, c_debug) {
-        var $a, $b, $$10, self = this, action_table = nil, action_check = nil, action_default = nil, action_pointer = nil, _ = nil, token_table = nil, act = nil, i = nil;
+      $def(self, '$_racc_yyparse_rb', function $$_racc_yyparse_rb(recv, mid, arg, c_debug) {
+        var $a, $b, self = this, action_table = nil, action_check = nil, action_default = nil, action_pointer = nil, _ = nil, token_table = nil, act = nil, i = nil;
 
         
-        $b = arg, $a = Opal.to_ary($b), (action_table = ($a[0] == null ? nil : $a[0])), (action_check = ($a[1] == null ? nil : $a[1])), (action_default = ($a[2] == null ? nil : $a[2])), (action_pointer = ($a[3] == null ? nil : $a[3])), (_ = ($a[4] == null ? nil : $a[4])), (_ = ($a[5] == null ? nil : $a[5])), (_ = ($a[6] == null ? nil : $a[6])), (_ = ($a[7] == null ? nil : $a[7])), (_ = ($a[8] == null ? nil : $a[8])), (_ = ($a[9] == null ? nil : $a[9])), (token_table = ($a[10] == null ? nil : $a[10])), (_ = ($a[11] == null ? nil : $a[11])), (_ = ($a[12] == null ? nil : $a[12])), (_ = ($a[13] == null ? nil : $a[13])), $b;
+        $b = arg, $a = $to_ary($b), (action_table = ($a[0] == null ? nil : $a[0])), (action_check = ($a[1] == null ? nil : $a[1])), (action_default = ($a[2] == null ? nil : $a[2])), (action_pointer = ($a[3] == null ? nil : $a[3])), (_ = ($a[4] == null ? nil : $a[4])), (_ = ($a[5] == null ? nil : $a[5])), (_ = ($a[6] == null ? nil : $a[6])), (_ = ($a[7] == null ? nil : $a[7])), (_ = ($a[8] == null ? nil : $a[8])), (_ = ($a[9] == null ? nil : $a[9])), (token_table = ($a[10] == null ? nil : $a[10])), (_ = ($a[11] == null ? nil : $a[11])), (_ = ($a[12] == null ? nil : $a[12])), (_ = ($a[13] == null ? nil : $a[13])), $b;
         self.$_racc_init_sysvars();
         act = nil;
         i = nil;
-        return $send(self, 'catch', ["racc_end_parse"], ($$10 = function(){var self = $$10.$$s == null ? this : $$10.$$s, $c, $d, $$11;
+        return $send(self, 'catch', ["racc_end_parse"], function $$2(){var $c, $d, self = $$2.$$s == null ? this : $$2.$$s;
           if (self.racc_state == null) self.racc_state = nil;
 
           
@@ -3269,141 +2748,101 @@ Opal.modules["racc/parser"] = function(Opal) {
               
             }
           };
-          return $send(recv, '__send__', [mid], ($$11 = function(tok, val){var self = $$11.$$s == null ? this : $$11.$$s, $e, $f, $ret_or_5 = nil, $ret_or_6 = nil, $ret_or_7 = nil, $ret_or_8 = nil, $ret_or_9 = nil, $ret_or_10 = nil, $ret_or_11 = nil, $ret_or_12 = nil, $ret_or_13 = nil;
+          return $send(recv, '__send__', [mid], function $$3(tok, val){var $e, $f, self = $$3.$$s == null ? this : $$3.$$s, $ret_or_1 = nil, $ret_or_2 = nil;
             if (self.racc_t == null) self.racc_t = nil;
             if (self.racc_state == null) self.racc_state = nil;
             if (self.racc_read_next == null) self.racc_read_next = nil;
 
             
             
-            if (tok == null) {
-              tok = nil;
-            };
+            if (tok == null) tok = nil;;
             
-            if (val == null) {
-              val = nil;
-            };
+            if (val == null) val = nil;;
             if ($truthy(tok)) {
-              self.racc_t = (function() {if ($truthy(($ret_or_5 = token_table['$[]'](tok)))) {
-                return $ret_or_5
-              } else {
-                return 1
-              }; return nil; })()
+              self.racc_t = ($truthy(($ret_or_1 = token_table['$[]'](tok))) ? ($ret_or_1) : (1))
             } else {
               self.racc_t = 0
             };
             self.racc_val = val;
             self.racc_read_next = false;
             i = $rb_plus(i, self.racc_t);
-            if ($truthy((function() {if ($truthy(($ret_or_6 = (function() {if ($truthy(($ret_or_7 = $rb_ge(i, 0)))) {
-              return (act = action_table['$[]'](i))
-            } else {
-              return $ret_or_7
-            }; return nil; })()))) {
-              return action_check['$[]'](i)['$=='](self.racc_state['$[]'](-1))
-            } else {
-              return $ret_or_6
-            }; return nil; })())) {
-            } else {
+            if (!(($truthy($rb_ge(i, 0)) && ($truthy((act = action_table['$[]'](i))))) && ($eqeq(action_check['$[]'](i), self.racc_state['$[]'](-1))))) {
               act = action_default['$[]'](self.racc_state['$[]'](-1))
             };
             while ($truthy((act = self.$_racc_evalact(act, arg)))) {
               
             };
-            while ($truthy((function() {if ($truthy(($ret_or_8 = (function() {if ($truthy(($ret_or_9 = (i = action_pointer['$[]'](self.racc_state['$[]'](-1)))['$!']()))) {
-              return $ret_or_9
-            } else {
-              return self.racc_read_next['$!']()
-            }; return nil; })()))) {
-              return $ret_or_8
-            } else {
-              return self.racc_t['$=='](0)
-            }; return nil; })())) {
+            while ($truthy(($truthy(($ret_or_1 = ($truthy(($ret_or_2 = (i = action_pointer['$[]'](self.racc_state['$[]'](-1)))['$!']())) ? ($ret_or_2) : (self.racc_read_next['$!']())))) ? ($ret_or_1) : (self.racc_t['$=='](0))))) {
               
-              if ($truthy((function() {if ($truthy(($ret_or_10 = (function() {if ($truthy(($ret_or_11 = (function() {if ($truthy(($ret_or_12 = (function() {if ($truthy(($ret_or_13 = i))) {
-                return (i = $rb_plus(i, self.racc_t))
-              } else {
-                return $ret_or_13
-              }; return nil; })()))) {
-                return $rb_ge(i, 0)
-              } else {
-                return $ret_or_12
-              }; return nil; })()))) {
-                return (act = action_table['$[]'](i))
-              } else {
-                return $ret_or_11
-              }; return nil; })()))) {
-                return action_check['$[]'](i)['$=='](self.racc_state['$[]'](-1))
-              } else {
-                return $ret_or_10
-              }; return nil; })())) {
-              } else {
+              if (!(((($truthy(i) && ($truthy((i = $rb_plus(i, self.racc_t))))) && ($truthy($rb_ge(i, 0)))) && ($truthy((act = action_table['$[]'](i))))) && ($eqeq(action_check['$[]'](i), self.racc_state['$[]'](-1))))) {
                 act = action_default['$[]'](self.racc_state['$[]'](-1))
               };
               while ($truthy((act = self.$_racc_evalact(act, arg)))) {
                 
               };
-            };}, $$11.$$s = self, $$11.$$arity = 2, $$11));}, $$10.$$s = self, $$10.$$arity = 0, $$10));
-      }, $Parser__racc_yyparse_rb$9.$$arity = 4);
+            };}, {$$arity: 2, $$s: self});}, {$$arity: 0, $$s: self});
+      }, 4);
       
-      Opal.def(self, '$_racc_evalact', $Parser__racc_evalact$12 = function $$_racc_evalact(act, arg) {
-        var $a, $b, $$13, self = this, action_table = nil, action_check = nil, _ = nil, action_pointer = nil, shift_n = nil, reduce_n = nil, $ret_or_14 = nil, $ret_or_15 = nil, code = nil, $case = nil, i = nil, $ret_or_16 = nil, $ret_or_17 = nil;
+      $def(self, '$_racc_evalact', function $$_racc_evalact(act, arg) {
+        var $a, $b, self = this, action_table = nil, action_check = nil, _ = nil, action_pointer = nil, shift_n = nil, reduce_n = nil, code = nil, $ret_or_1 = nil, i = nil;
 
         
-        $b = arg, $a = Opal.to_ary($b), (action_table = ($a[0] == null ? nil : $a[0])), (action_check = ($a[1] == null ? nil : $a[1])), (_ = ($a[2] == null ? nil : $a[2])), (action_pointer = ($a[3] == null ? nil : $a[3])), (_ = ($a[4] == null ? nil : $a[4])), (_ = ($a[5] == null ? nil : $a[5])), (_ = ($a[6] == null ? nil : $a[6])), (_ = ($a[7] == null ? nil : $a[7])), (_ = ($a[8] == null ? nil : $a[8])), (_ = ($a[9] == null ? nil : $a[9])), (_ = ($a[10] == null ? nil : $a[10])), (shift_n = ($a[11] == null ? nil : $a[11])), (reduce_n = ($a[12] == null ? nil : $a[12])), (_ = ($a[13] == null ? nil : $a[13])), (_ = ($a[14] == null ? nil : $a[14])), $b;
-        if ($truthy((function() {if ($truthy(($ret_or_14 = $rb_gt(act, 0)))) {
-          return $rb_lt(act, shift_n)
-        } else {
-          return $ret_or_14
-        }; return nil; })())) {
+        $b = arg, $a = $to_ary($b), (action_table = ($a[0] == null ? nil : $a[0])), (action_check = ($a[1] == null ? nil : $a[1])), (_ = ($a[2] == null ? nil : $a[2])), (action_pointer = ($a[3] == null ? nil : $a[3])), (_ = ($a[4] == null ? nil : $a[4])), (_ = ($a[5] == null ? nil : $a[5])), (_ = ($a[6] == null ? nil : $a[6])), (_ = ($a[7] == null ? nil : $a[7])), (_ = ($a[8] == null ? nil : $a[8])), (_ = ($a[9] == null ? nil : $a[9])), (_ = ($a[10] == null ? nil : $a[10])), (shift_n = ($a[11] == null ? nil : $a[11])), (reduce_n = ($a[12] == null ? nil : $a[12])), (_ = ($a[13] == null ? nil : $a[13])), (_ = ($a[14] == null ? nil : $a[14])), $b;
+        if (($truthy($rb_gt(act, 0)) && ($truthy($rb_lt(act, shift_n))))) {
           
           if ($truthy($rb_gt(self.racc_error_status, 0))) {
-            if (self.racc_t['$=='](1)) {
-            } else {
+            if (!$eqeq(self.racc_t, 1)) {
               self.racc_error_status = $rb_minus(self.racc_error_status, 1)
-            }};
+            }
+          };
           self.racc_vstack.$push(self.racc_val);
           self.racc_state.$push(act);
           self.racc_read_next = true;
           if ($truthy(self.yydebug)) {
             
             self.racc_tstack.$push(self.racc_t);
-            self.$racc_shift(self.racc_t, self.racc_tstack, self.racc_vstack);};
-        } else if ($truthy((function() {if ($truthy(($ret_or_15 = $rb_lt(act, 0)))) {
-          return $rb_gt(act, reduce_n['$-@']())
-        } else {
-          return $ret_or_15
-        }; return nil; })())) {
+            self.$racc_shift(self.racc_t, self.racc_tstack, self.racc_vstack);
+          };
+        } else if (($truthy($rb_lt(act, 0)) && ($truthy($rb_gt(act, reduce_n['$-@']()))))) {
           
-          code = $send(self, 'catch', ["racc_jump"], ($$13 = function(){var self = $$13.$$s == null ? this : $$13.$$s;
+          code = $send(self, 'catch', ["racc_jump"], function $$4(){var self = $$4.$$s == null ? this : $$4.$$s;
             if (self.racc_state == null) self.racc_state = nil;
 
             
             self.racc_state.$push(self.$_racc_do_reduce(arg, act));
-            return false;}, $$13.$$s = self, $$13.$$arity = 0, $$13));
+            return false;}, {$$arity: 0, $$s: self});
           if ($truthy(code)) {
-            $case = code;
-            if ((1)['$===']($case)) {
-            self.racc_user_yyerror = true;
-            return reduce_n['$-@']();}
-            else if ((2)['$===']($case)) {return shift_n}
-            else {self.$raise("[Racc Bug] unknown jump code")}};
-        } else if (act['$=='](shift_n)) {
+            if ($eqeqeq(1, ($ret_or_1 = code))) {
+              
+              self.racc_user_yyerror = true;
+              return reduce_n['$-@']();
+            } else if ($eqeqeq(2, $ret_or_1)) {
+              return shift_n
+            } else {
+              self.$raise("[Racc Bug] unknown jump code")
+            }
+          };
+        } else if ($eqeq(act, shift_n)) {
           
           if ($truthy(self.yydebug)) {
-            self.$racc_accept()};
+            self.$racc_accept()
+          };
           self.$throw("racc_end_parse", self.racc_vstack['$[]'](0));
-        } else if (act['$=='](reduce_n['$-@']())) {
+        } else if ($eqeq(act, reduce_n['$-@']())) {
           
-          $case = self.racc_error_status;
-          if ((0)['$===']($case)) {if ($truthy(arg['$[]'](21))) {
+          if ($eqeqeq(0, ($ret_or_1 = self.racc_error_status))) {
+            if (!$truthy(arg['$[]'](21))) {
+              self.$on_error(self.racc_t, self.racc_val, self.racc_vstack)
+            }
+          } else if ($eqeqeq(3, $ret_or_1)) {
+            
+            if ($eqeq(self.racc_t, 0)) {
+              self.$throw("racc_end_parse", nil)
+            };
+            self.racc_read_next = true;
           } else {
-            self.$on_error(self.racc_t, self.racc_val, self.racc_vstack)
-          }}
-          else if ((3)['$===']($case)) {
-          if (self.racc_t['$=='](0)) {
-            self.$throw("racc_end_parse", nil)};
-          self.racc_read_next = true;};
+            nil
+          };
           self.racc_user_yyerror = false;
           self.racc_error_status = 3;
           while ($truthy(true)) {
@@ -3411,40 +2850,36 @@ Opal.modules["racc/parser"] = function(Opal) {
             if ($truthy((i = action_pointer['$[]'](self.racc_state['$[]'](-1))))) {
               
               i = $rb_plus(i, 1);
-              if ($truthy((function() {if ($truthy(($ret_or_16 = (function() {if ($truthy(($ret_or_17 = $rb_ge(i, 0)))) {
-                
-                return (act = action_table['$[]'](i));
-              } else {
-                return $ret_or_17
-              }; return nil; })()))) {
-                return action_check['$[]'](i)['$=='](self.racc_state['$[]'](-1))
-              } else {
-                return $ret_or_16
-              }; return nil; })())) {
-                break;};};
+              if ((($truthy($rb_ge(i, 0)) && ($truthy((act = action_table['$[]'](i))))) && ($eqeq(action_check['$[]'](i), self.racc_state['$[]'](-1))))) {
+                break;
+              };
+            };
             if ($truthy($rb_le(self.racc_state.$size(), 1))) {
-              self.$throw("racc_end_parse", nil)};
+              self.$throw("racc_end_parse", nil)
+            };
             self.racc_state.$pop();
             self.racc_vstack.$pop();
             if ($truthy(self.yydebug)) {
               
               self.racc_tstack.$pop();
-              self.$racc_e_pop(self.racc_state, self.racc_tstack, self.racc_vstack);};
+              self.$racc_e_pop(self.racc_state, self.racc_tstack, self.racc_vstack);
+            };
           };
           return act;
         } else {
-          self.$raise("" + "[Racc Bug] unknown action " + (act.$inspect()))
+          self.$raise("[Racc Bug] unknown action " + (act.$inspect()))
         };
         if ($truthy(self.yydebug)) {
-          self.$racc_next_state(self.racc_state['$[]'](-1), self.racc_state)};
+          self.$racc_next_state(self.racc_state['$[]'](-1), self.racc_state)
+        };
         return nil;
-      }, $Parser__racc_evalact$12.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$_racc_do_reduce', $Parser__racc_do_reduce$14 = function $$_racc_do_reduce(arg, act) {
-        var $a, $b, self = this, _ = nil, goto_table = nil, goto_check = nil, goto_default = nil, goto_pointer = nil, nt_base = nil, reduce_table = nil, use_result = nil, state = nil, vstack = nil, tstack = nil, i = nil, len = nil, reduce_to = nil, method_id = nil, void_array = nil, tmp_t = nil, tmp_v = nil, $writer = nil, k1 = nil, $ret_or_18 = nil, $ret_or_19 = nil, curstate = nil;
+      $def(self, '$_racc_do_reduce', function $$_racc_do_reduce(arg, act) {
+        var $a, $b, self = this, _ = nil, goto_table = nil, goto_check = nil, goto_default = nil, goto_pointer = nil, nt_base = nil, reduce_table = nil, use_result = nil, state = nil, vstack = nil, tstack = nil, i = nil, len = nil, reduce_to = nil, method_id = nil, void_array = nil, tmp_t = nil, tmp_v = nil, $writer = nil, k1 = nil, curstate = nil;
 
         
-        $b = arg, $a = Opal.to_ary($b), (_ = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), (_ = ($a[2] == null ? nil : $a[2])), (_ = ($a[3] == null ? nil : $a[3])), (goto_table = ($a[4] == null ? nil : $a[4])), (goto_check = ($a[5] == null ? nil : $a[5])), (goto_default = ($a[6] == null ? nil : $a[6])), (goto_pointer = ($a[7] == null ? nil : $a[7])), (nt_base = ($a[8] == null ? nil : $a[8])), (reduce_table = ($a[9] == null ? nil : $a[9])), (_ = ($a[10] == null ? nil : $a[10])), (_ = ($a[11] == null ? nil : $a[11])), (_ = ($a[12] == null ? nil : $a[12])), (use_result = ($a[13] == null ? nil : $a[13])), $b;
+        $b = arg, $a = $to_ary($b), (_ = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), (_ = ($a[2] == null ? nil : $a[2])), (_ = ($a[3] == null ? nil : $a[3])), (goto_table = ($a[4] == null ? nil : $a[4])), (goto_check = ($a[5] == null ? nil : $a[5])), (goto_default = ($a[6] == null ? nil : $a[6])), (goto_pointer = ($a[7] == null ? nil : $a[7])), (nt_base = ($a[8] == null ? nil : $a[8])), (reduce_table = ($a[9] == null ? nil : $a[9])), (_ = ($a[10] == null ? nil : $a[10])), (_ = ($a[11] == null ? nil : $a[11])), (_ = ($a[12] == null ? nil : $a[12])), (use_result = ($a[13] == null ? nil : $a[13])), $b;
         state = self.racc_state;
         vstack = self.racc_vstack;
         tstack = self.racc_tstack;
@@ -3454,20 +2889,22 @@ Opal.modules["racc/parser"] = function(Opal) {
         method_id = reduce_table['$[]']($rb_plus(i, 2));
         void_array = [];
         if ($truthy(self.yydebug)) {
-          tmp_t = tstack['$[]'](len['$-@'](), len)};
+          tmp_t = tstack['$[]'](len['$-@'](), len)
+        };
         tmp_v = vstack['$[]'](len['$-@'](), len);
         if ($truthy(self.yydebug)) {
           
           $writer = [len['$-@'](), len, void_array];
-          $send(tstack, '[]=', Opal.to_a($writer));
-          $writer[$rb_minus($writer["length"], 1)];};
+          $send(tstack, '[]=', $to_a($writer));
+          $writer[$rb_minus($writer["length"], 1)];
+        };
         
         $writer = [len['$-@'](), len, void_array];
-        $send(vstack, '[]=', Opal.to_a($writer));
+        $send(vstack, '[]=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         
         $writer = [len['$-@'](), len, void_array];
-        $send(state, '[]=', Opal.to_a($writer));
+        $send(state, '[]=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         if ($truthy(use_result)) {
           vstack.$push(self.$__send__(method_id, tmp_v, vstack, tmp_v['$[]'](0)))
@@ -3476,54 +2913,44 @@ Opal.modules["racc/parser"] = function(Opal) {
         };
         tstack.$push(reduce_to);
         if ($truthy(self.yydebug)) {
-          self.$racc_reduce(tmp_t, reduce_to, tstack, vstack)};
+          self.$racc_reduce(tmp_t, reduce_to, tstack, vstack)
+        };
         k1 = $rb_minus(reduce_to, nt_base);
         if ($truthy((i = goto_pointer['$[]'](k1)))) {
           
           i = $rb_plus(i, state['$[]'](-1));
-          if ($truthy((function() {if ($truthy(($ret_or_18 = (function() {if ($truthy(($ret_or_19 = $rb_ge(i, 0)))) {
-            
-            return (curstate = goto_table['$[]'](i));
-          } else {
-            return $ret_or_19
-          }; return nil; })()))) {
-            return goto_check['$[]'](i)['$=='](k1)
-          } else {
-            return $ret_or_18
-          }; return nil; })())) {
-            return curstate};};
+          if ((($truthy($rb_ge(i, 0)) && ($truthy((curstate = goto_table['$[]'](i))))) && ($eqeq(goto_check['$[]'](i), k1)))) {
+            return curstate
+          };
+        };
         return goto_default['$[]'](k1);
-      }, $Parser__racc_do_reduce$14.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$on_error', $Parser_on_error$15 = function $$on_error(t, val, vstack) {
-        var self = this, $ret_or_20 = nil;
+      $def(self, '$on_error', function $$on_error(t, val, vstack) {
+        var self = this, $ret_or_1 = nil;
 
-        return self.$raise($$($nesting, 'ParseError'), self.$sprintf("\nparse error on value %s (%s)", val.$inspect(), (function() {if ($truthy(($ret_or_20 = self.$token_to_str(t)))) {
-          return $ret_or_20
-        } else {
-          return "?"
-        }; return nil; })()))
-      }, $Parser_on_error$15.$$arity = 3);
+        return self.$raise($$('ParseError'), self.$sprintf("\nparse error on value %s (%s)", val.$inspect(), ($truthy(($ret_or_1 = self.$token_to_str(t))) ? ($ret_or_1) : ("?"))))
+      }, 3);
       
-      Opal.def(self, '$yyerror', $Parser_yyerror$16 = function $$yyerror() {
+      $def(self, '$yyerror', function $$yyerror() {
         var self = this;
 
         return self.$throw("racc_jump", 1)
-      }, $Parser_yyerror$16.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$yyaccept', $Parser_yyaccept$17 = function $$yyaccept() {
+      $def(self, '$yyaccept', function $$yyaccept() {
         var self = this;
 
         return self.$throw("racc_jump", 2)
-      }, $Parser_yyaccept$17.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$yyerrok', $Parser_yyerrok$18 = function $$yyerrok() {
+      $def(self, '$yyerrok', function $$yyerrok() {
         var self = this;
 
         return (self.racc_error_status = 0)
-      }, $Parser_yyerrok$18.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$racc_read_token', $Parser_racc_read_token$19 = function $$racc_read_token(t, tok, val) {
+      $def(self, '$racc_read_token', function $$racc_read_token(t, tok, val) {
         var self = this;
 
         
@@ -3531,19 +2958,19 @@ Opal.modules["racc/parser"] = function(Opal) {
         self.racc_debug_out.$print(tok.$inspect(), "(", self.$racc_token2str(t), ") ");
         self.racc_debug_out.$puts(val.$inspect());
         return self.racc_debug_out.$puts();
-      }, $Parser_racc_read_token$19.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$racc_shift', $Parser_racc_shift$20 = function $$racc_shift(tok, tstack, vstack) {
+      $def(self, '$racc_shift', function $$racc_shift(tok, tstack, vstack) {
         var self = this;
 
         
-        self.racc_debug_out.$puts("" + "shift   " + (self.$racc_token2str(tok)));
+        self.racc_debug_out.$puts("shift   " + (self.$racc_token2str(tok)));
         self.$racc_print_stacks(tstack, vstack);
         return self.racc_debug_out.$puts();
-      }, $Parser_racc_shift$20.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$racc_reduce', $Parser_racc_reduce$21 = function $$racc_reduce(toks, sim, tstack, vstack) {
-        var $$22, self = this, out = nil;
+      $def(self, '$racc_reduce', function $$racc_reduce(toks, sim, tstack, vstack) {
+        var self = this, out = nil;
 
         
         out = self.racc_debug_out;
@@ -3551,29 +2978,27 @@ Opal.modules["racc/parser"] = function(Opal) {
         if ($truthy(toks['$empty?']())) {
           out.$print(" <none>")
         } else {
-          $send(toks, 'each', [], ($$22 = function(t){var self = $$22.$$s == null ? this : $$22.$$s;
+          $send(toks, 'each', [], function $$5(t){var self = $$5.$$s == null ? this : $$5.$$s;
 
             
             
-            if (t == null) {
-              t = nil;
-            };
-            return out.$print(" ", self.$racc_token2str(t));}, $$22.$$s = self, $$22.$$arity = 1, $$22))
+            if (t == null) t = nil;;
+            return out.$print(" ", self.$racc_token2str(t));}, {$$arity: 1, $$s: self})
         };
-        out.$puts("" + " --> " + (self.$racc_token2str(sim)));
+        out.$puts(" --> " + (self.$racc_token2str(sim)));
         self.$racc_print_stacks(tstack, vstack);
         return self.racc_debug_out.$puts();
-      }, $Parser_racc_reduce$21.$$arity = 4);
+      }, 4);
       
-      Opal.def(self, '$racc_accept', $Parser_racc_accept$23 = function $$racc_accept() {
+      $def(self, '$racc_accept', function $$racc_accept() {
         var self = this;
 
         
         self.racc_debug_out.$puts("accept");
         return self.racc_debug_out.$puts();
-      }, $Parser_racc_accept$23.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$racc_e_pop', $Parser_racc_e_pop$24 = function $$racc_e_pop(state, tstack, vstack) {
+      $def(self, '$racc_e_pop', function $$racc_e_pop(state, tstack, vstack) {
         var self = this;
 
         
@@ -3581,192 +3006,150 @@ Opal.modules["racc/parser"] = function(Opal) {
         self.$racc_print_states(state);
         self.$racc_print_stacks(tstack, vstack);
         return self.racc_debug_out.$puts();
-      }, $Parser_racc_e_pop$24.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$racc_next_state', $Parser_racc_next_state$25 = function $$racc_next_state(curstate, state) {
+      $def(self, '$racc_next_state', function $$racc_next_state(curstate, state) {
         var self = this;
 
         
-        self.racc_debug_out.$puts("" + "goto    " + (curstate));
+        self.racc_debug_out.$puts("goto    " + (curstate));
         self.$racc_print_states(state);
         return self.racc_debug_out.$puts();
-      }, $Parser_racc_next_state$25.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$racc_print_stacks', $Parser_racc_print_stacks$26 = function $$racc_print_stacks(t, v) {
-        var $$27, self = this, out = nil;
+      $def(self, '$racc_print_stacks', function $$racc_print_stacks(t, v) {
+        var self = this, out = nil;
 
         
         out = self.racc_debug_out;
         out.$print("        [");
-        $send(t, 'each_index', [], ($$27 = function(i){var self = $$27.$$s == null ? this : $$27.$$s;
+        $send(t, 'each_index', [], function $$6(i){var self = $$6.$$s == null ? this : $$6.$$s;
 
           
           
-          if (i == null) {
-            i = nil;
-          };
-          return out.$print(" (", self.$racc_token2str(t['$[]'](i)), " ", v['$[]'](i).$inspect(), ")");}, $$27.$$s = self, $$27.$$arity = 1, $$27));
+          if (i == null) i = nil;;
+          return out.$print(" (", self.$racc_token2str(t['$[]'](i)), " ", v['$[]'](i).$inspect(), ")");}, {$$arity: 1, $$s: self});
         return out.$puts(" ]");
-      }, $Parser_racc_print_stacks$26.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$racc_print_states', $Parser_racc_print_states$28 = function $$racc_print_states(s) {
-        var $$29, self = this, out = nil;
+      $def(self, '$racc_print_states', function $$racc_print_states(s) {
+        var self = this, out = nil;
 
         
         out = self.racc_debug_out;
         out.$print("        [");
-        $send(s, 'each', [], ($$29 = function(st){var self = $$29.$$s == null ? this : $$29.$$s;
-
+        $send(s, 'each', [], function $$7(st){
           
           
-          if (st == null) {
-            st = nil;
-          };
-          return out.$print(" ", st);}, $$29.$$s = self, $$29.$$arity = 1, $$29));
+          if (st == null) st = nil;;
+          return out.$print(" ", st);}, 1);
         return out.$puts(" ]");
-      }, $Parser_racc_print_states$28.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$racc_token2str', $Parser_racc_token2str$30 = function $$racc_token2str(tok) {
-        var self = this, $ret_or_21 = nil;
+      $def(self, '$racc_token2str', function $$racc_token2str(tok) {
+        var self = this, $ret_or_1 = nil;
 
-        if ($truthy(($ret_or_21 = $$$(self.$class(), 'Racc_token_to_s_table')['$[]'](tok)))) {
-          return $ret_or_21
+        if ($truthy(($ret_or_1 = $$$(self.$class(), 'Racc_token_to_s_table')['$[]'](tok)))) {
+          return $ret_or_1
         } else {
-          return self.$raise("" + "[Racc Bug] can't convert token " + (tok) + " to string")
+          return self.$raise("[Racc Bug] can't convert token " + (tok) + " to string")
         }
-      }, $Parser_racc_token2str$30.$$arity = 1);
-      return (Opal.def(self, '$token_to_str', $Parser_token_to_str$31 = function $$token_to_str(t) {
+      }, 1);
+      return $def(self, '$token_to_str', function $$token_to_str(t) {
         var self = this;
 
         return $$$(self.$class(), 'Racc_token_to_s_table')['$[]'](t)
-      }, $Parser_token_to_str$31.$$arity = 1), nil) && 'token_to_str';
+      }, 1);
     })($nesting[0], null, $nesting);
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/version"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module;
+Opal.modules["parser/version"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $const_set = Opal.const_set;
 
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
     var $nesting = [self].concat($parent_nesting);
 
-    return Opal.const_set($nesting[0], 'VERSION', "3.1.1.0")
+    return $const_set($nesting[0], 'VERSION', "3.1.1.0")
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["racc/parser"] = function(Opal) {
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_ge(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs >= rhs : lhs['$>='](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_le(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs <= rhs : lhs['$<='](rhs);
-  }
-  function $rb_times(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs * rhs : lhs['$*'](rhs);
-  }
-  var $a, self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $gvars = Opal.gvars, $send = Opal.send;
-
-  Opal.add_stubs(['$[]', '$class', '$<', '$size', '$[]=', '$-', '$__send__', '$_racc_setup', '$raise', '$_racc_init_sysvars', '$catch', '$!=', '$next_token', '$racc_read_token', '$+', '$>=', '$==', '$_racc_evalact', '$!', '$>', '$push', '$racc_shift', '$-@', '$_racc_do_reduce', '$===', '$racc_accept', '$throw', '$on_error', '$<=', '$pop', '$racc_e_pop', '$inspect', '$racc_next_state', '$*', '$racc_reduce', '$sprintf', '$token_to_str', '$print', '$racc_token2str', '$puts', '$racc_print_stacks', '$empty?', '$each', '$racc_print_states', '$each_index']);
+Opal.modules["racc/parser"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $a, $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $const_set = Opal.const_set, $defs = Opal.defs, $gvars = Opal.gvars, $rb_lt = Opal.rb_lt, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $def = Opal.def, $to_ary = Opal.to_ary, $neqeq = Opal.neqeq, $rb_plus = Opal.rb_plus, $eqeq = Opal.eqeq, $rb_ge = Opal.rb_ge, $rb_gt = Opal.rb_gt, $eqeqeq = Opal.eqeqeq, $rb_le = Opal.rb_le, $rb_times = Opal.rb_times;
+
+  Opal.add_stubs('[],class,<,size,[]=,-,__send__,_racc_setup,raise,_racc_init_sysvars,catch,!=,next_token,racc_read_token,+,==,>=,_racc_evalact,!,>,push,racc_shift,-@,_racc_do_reduce,===,racc_accept,throw,on_error,<=,pop,racc_e_pop,inspect,racc_next_state,*,racc_reduce,sprintf,token_to_str,print,racc_token2str,puts,racc_print_stacks,empty?,each,racc_print_states,each_index');
   
   (function($base, $parent_nesting) {
     var self = $module($base, 'Racc');
 
-    var $nesting = [self].concat($parent_nesting);
-
-    return (function($base, $super, $parent_nesting) {
-      var self = $klass($base, $super, 'ParseError');
-
-      var $nesting = [self].concat($parent_nesting);
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return nil
-    })($nesting[0], $$($nesting, 'StandardError'), $nesting)
+    return ($klass($nesting[0], $$('StandardError'), 'ParseError'), nil)
   })($nesting[0], $nesting);
-  if ($truthy((($a = $$$('::', 'ParseError', 'skip_raise')) ? 'constant' : nil))) {
-  } else {
-    Opal.const_set($nesting[0], 'ParseError', $$$($$($nesting, 'Racc'), 'ParseError'))
+  if (!$truthy((($a = $$$('::', 'ParseError', 'skip_raise')) ? 'constant' : nil))) {
+    $const_set($nesting[0], 'ParseError', $$$($$('Racc'), 'ParseError'))
   };
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Racc');
 
-    var $nesting = [self].concat($parent_nesting), $a;
+    var $a, $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
-    if ($truthy((($a = $$($nesting, 'Racc_No_Extensions', 'skip_raise')) ? 'constant' : nil))) {
-    } else {
-      Opal.const_set($nesting[0], 'Racc_No_Extensions', false)
+    if (!$truthy((($a = $$('Racc_No_Extensions', 'skip_raise')) ? 'constant' : nil))) {
+      $const_set($nesting[0], 'Racc_No_Extensions', false)
     };
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Parser');
 
-      var $nesting = [self].concat($parent_nesting), $Parser_racc_runtime_type$1, $Parser__racc_setup$2, $Parser__racc_init_sysvars$3, $Parser_do_parse$4, $Parser_next_token$5, $Parser__racc_do_parse_rb$6, $Parser_yyparse$8, $Parser__racc_yyparse_rb$9, $Parser__racc_evalact$12, $Parser__racc_do_reduce$14, $Parser_on_error$15, $Parser_yyerror$16, $Parser_yyaccept$17, $Parser_yyerrok$18, $Parser_racc_read_token$19, $Parser_racc_shift$20, $Parser_racc_reduce$21, $Parser_racc_accept$23, $Parser_racc_e_pop$24, $Parser_racc_next_state$25, $Parser_racc_print_stacks$26, $Parser_racc_print_states$28, $Parser_racc_token2str$30, $Parser_token_to_str$31;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.yydebug = self.$$prototype.racc_debug_out = self.$$prototype.racc_error_status = self.$$prototype.racc_t = self.$$prototype.racc_vstack = self.$$prototype.racc_val = self.$$prototype.racc_state = self.$$prototype.racc_tstack = nil;
+      $proto.yydebug = $proto.racc_debug_out = $proto.racc_error_status = $proto.racc_t = $proto.racc_vstack = $proto.racc_val = $proto.racc_state = $proto.racc_tstack = nil;
       
-      Opal.const_set($nesting[0], 'Racc_Runtime_Version', "1.4.6");
-      Opal.const_set($nesting[0], 'Racc_Runtime_Revision', ["originalRevision:", "1.8"]['$[]'](1));
-      Opal.const_set($nesting[0], 'Racc_Runtime_Core_Version_R', "1.4.6");
-      Opal.const_set($nesting[0], 'Racc_Runtime_Core_Revision_R', ["originalRevision:", "1.8"]['$[]'](1));
-      Opal.const_set($nesting[0], 'Racc_Main_Parsing_Routine', "_racc_do_parse_rb");
-      Opal.const_set($nesting[0], 'Racc_YY_Parse_Method', "_racc_yyparse_rb");
-      Opal.const_set($nesting[0], 'Racc_Runtime_Core_Version', $$($nesting, 'Racc_Runtime_Core_Version_R'));
-      Opal.const_set($nesting[0], 'Racc_Runtime_Core_Revision', $$($nesting, 'Racc_Runtime_Core_Revision_R'));
-      Opal.const_set($nesting[0], 'Racc_Runtime_Type', "ruby");
-      Opal.defs($$($nesting, 'Parser'), '$racc_runtime_type', $Parser_racc_runtime_type$1 = function $$racc_runtime_type() {
-        var self = this;
-
-        return $$($nesting, 'Racc_Runtime_Type')
-      }, $Parser_racc_runtime_type$1.$$arity = 0);
+      $const_set($nesting[0], 'Racc_Runtime_Version', "1.4.6");
+      $const_set($nesting[0], 'Racc_Runtime_Revision', ["originalRevision:", "1.8"]['$[]'](1));
+      $const_set($nesting[0], 'Racc_Runtime_Core_Version_R', "1.4.6");
+      $const_set($nesting[0], 'Racc_Runtime_Core_Revision_R', ["originalRevision:", "1.8"]['$[]'](1));
+      $const_set($nesting[0], 'Racc_Main_Parsing_Routine', "_racc_do_parse_rb");
+      $const_set($nesting[0], 'Racc_YY_Parse_Method', "_racc_yyparse_rb");
+      $const_set($nesting[0], 'Racc_Runtime_Core_Version', $$('Racc_Runtime_Core_Version_R'));
+      $const_set($nesting[0], 'Racc_Runtime_Core_Revision', $$('Racc_Runtime_Core_Revision_R'));
+      $const_set($nesting[0], 'Racc_Runtime_Type', "ruby");
+      $defs($$('Parser'), '$racc_runtime_type', function $$racc_runtime_type() {
+        
+        return $$('Racc_Runtime_Type')
+      }, 0);
       
-      Opal.def(self, '$_racc_setup', $Parser__racc_setup$2 = function $$_racc_setup() {
+      $def(self, '$_racc_setup', function $$_racc_setup() {
         var $a, $b, self = this, $ret_or_1 = nil, arg = nil, $writer = nil;
         if ($gvars.stderr == null) $gvars.stderr = nil;
 
         
-        if ($truthy($$$(self.$class(), 'Racc_debug_parser'))) {
-        } else {
+        if (!$truthy($$$(self.$class(), 'Racc_debug_parser'))) {
           self.yydebug = false
         };
-        if ($truthy((($a = self['yydebug'], $a != null && $a !== nil) ? 'instance-variable' : nil))) {
-        } else {
+        if (!$truthy((($a = self['yydebug'], $a != null && $a !== nil) ? 'instance-variable' : nil))) {
           self.yydebug = false
         };
         if ($truthy(self.yydebug)) {
           
-          if ($truthy((($b = self['racc_debug_out'], $b != null && $b !== nil) ? 'instance-variable' : nil))) {
-          } else {
+          if (!$truthy((($b = self['racc_debug_out'], $b != null && $b !== nil) ? 'instance-variable' : nil))) {
             self.racc_debug_out = $gvars.stderr
           };
-          self.racc_debug_out = (function() {if ($truthy(($ret_or_1 = self.racc_debug_out))) {
-            return $ret_or_1
-          } else {
-            return $gvars.stderr
-          }; return nil; })();};
+          self.racc_debug_out = ($truthy(($ret_or_1 = self.racc_debug_out)) ? ($ret_or_1) : ($gvars.stderr));
+        };
         arg = $$$(self.$class(), 'Racc_arg');
         if ($truthy($rb_lt(arg.$size(), 14))) {
           
           $writer = [13, true];
-          $send(arg, '[]=', Opal.to_a($writer));
-          $writer[$rb_minus($writer["length"], 1)];};
+          $send(arg, '[]=', $to_a($writer));
+          $writer[$rb_minus($writer["length"], 1)];
+        };
         return arg;
-      }, $Parser__racc_setup$2.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$_racc_init_sysvars', $Parser__racc_init_sysvars$3 = function $$_racc_init_sysvars() {
+      $def(self, '$_racc_init_sysvars', function $$_racc_init_sysvars() {
         var self = this;
 
         
@@ -3778,28 +3161,28 @@ Opal.modules["racc/parser"] = function(Opal) {
         self.racc_read_next = true;
         self.racc_user_yyerror = false;
         return (self.racc_error_status = 0);
-      }, $Parser__racc_init_sysvars$3.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$do_parse', $Parser_do_parse$4 = function $$do_parse() {
+      $def(self, '$do_parse', function $$do_parse() {
         var self = this;
 
-        return self.$__send__($$($nesting, 'Racc_Main_Parsing_Routine'), self.$_racc_setup(), false)
-      }, $Parser_do_parse$4.$$arity = 0);
+        return self.$__send__($$('Racc_Main_Parsing_Routine'), self.$_racc_setup(), false)
+      }, 0);
       
-      Opal.def(self, '$next_token', $Parser_next_token$5 = function $$next_token() {
+      $def(self, '$next_token', function $$next_token() {
         var self = this;
 
-        return self.$raise($$($nesting, 'NotImplementedError'), "" + (self.$class()) + "#next_token is not defined")
-      }, $Parser_next_token$5.$$arity = 0);
+        return self.$raise($$('NotImplementedError'), "" + (self.$class()) + "#next_token is not defined")
+      }, 0);
       
-      Opal.def(self, '$_racc_do_parse_rb', $Parser__racc_do_parse_rb$6 = function $$_racc_do_parse_rb(arg, in_debug) {
-        var $a, $b, $$7, self = this, action_table = nil, action_check = nil, action_default = nil, action_pointer = nil, _ = nil, token_table = nil, tok = nil, act = nil, i = nil;
+      $def(self, '$_racc_do_parse_rb', function $$_racc_do_parse_rb(arg, in_debug) {
+        var $a, $b, self = this, action_table = nil, action_check = nil, action_default = nil, action_pointer = nil, _ = nil, token_table = nil, tok = nil, act = nil, i = nil;
 
         
-        $b = arg, $a = Opal.to_ary($b), (action_table = ($a[0] == null ? nil : $a[0])), (action_check = ($a[1] == null ? nil : $a[1])), (action_default = ($a[2] == null ? nil : $a[2])), (action_pointer = ($a[3] == null ? nil : $a[3])), (_ = ($a[4] == null ? nil : $a[4])), (_ = ($a[5] == null ? nil : $a[5])), (_ = ($a[6] == null ? nil : $a[6])), (_ = ($a[7] == null ? nil : $a[7])), (_ = ($a[8] == null ? nil : $a[8])), (_ = ($a[9] == null ? nil : $a[9])), (token_table = ($a[10] == null ? nil : $a[10])), (_ = ($a[11] == null ? nil : $a[11])), (_ = ($a[12] == null ? nil : $a[12])), (_ = ($a[13] == null ? nil : $a[13])), $b;
+        $b = arg, $a = $to_ary($b), (action_table = ($a[0] == null ? nil : $a[0])), (action_check = ($a[1] == null ? nil : $a[1])), (action_default = ($a[2] == null ? nil : $a[2])), (action_pointer = ($a[3] == null ? nil : $a[3])), (_ = ($a[4] == null ? nil : $a[4])), (_ = ($a[5] == null ? nil : $a[5])), (_ = ($a[6] == null ? nil : $a[6])), (_ = ($a[7] == null ? nil : $a[7])), (_ = ($a[8] == null ? nil : $a[8])), (_ = ($a[9] == null ? nil : $a[9])), (token_table = ($a[10] == null ? nil : $a[10])), (_ = ($a[11] == null ? nil : $a[11])), (_ = ($a[12] == null ? nil : $a[12])), (_ = ($a[13] == null ? nil : $a[13])), $b;
         self.$_racc_init_sysvars();
         tok = (act = (i = nil));
-        return $send(self, 'catch', ["racc_end_parse"], ($$7 = function(){var self = $$7.$$s == null ? this : $$7.$$s, $c, $d, $e, $ret_or_2 = nil, $ret_or_3 = nil, $ret_or_4 = nil;
+        return $send(self, 'catch', ["racc_end_parse"], function $$1(){var $c, $d, $e, self = $$1.$$s == null ? this : $$1.$$s, $ret_or_1 = nil;
           if (self.racc_state == null) self.racc_state = nil;
           if (self.racc_read_next == null) self.racc_read_next = nil;
           if (self.racc_t == null) self.racc_t = nil;
@@ -3811,32 +3194,22 @@ Opal.modules["racc/parser"] = function(Opal) {
             if ($truthy((i = action_pointer['$[]'](self.racc_state['$[]'](-1))))) {
               
               if ($truthy(self.racc_read_next)) {
-                if ($truthy(self.racc_t['$!='](0))) {
+                if ($neqeq(self.racc_t, 0)) {
                   
-                  $e = self.$next_token(), $d = Opal.to_ary($e), (tok = ($d[0] == null ? nil : $d[0])), (self.racc_val = ($d[1] == null ? nil : $d[1])), $e;
+                  $e = self.$next_token(), $d = $to_ary($e), (tok = ($d[0] == null ? nil : $d[0])), (self.racc_val = ($d[1] == null ? nil : $d[1])), $e;
                   if ($truthy(tok)) {
-                    self.racc_t = (function() {if ($truthy(($ret_or_2 = token_table['$[]'](tok)))) {
-                      return $ret_or_2
-                    } else {
-                      return 1
-                    }; return nil; })()
+                    self.racc_t = ($truthy(($ret_or_1 = token_table['$[]'](tok))) ? ($ret_or_1) : (1))
                   } else {
                     self.racc_t = 0
                   };
                   if ($truthy(self.yydebug)) {
-                    self.$racc_read_token(self.racc_t, tok, self.racc_val)};
-                  self.racc_read_next = false;}};
+                    self.$racc_read_token(self.racc_t, tok, self.racc_val)
+                  };
+                  self.racc_read_next = false;
+                }
+              };
               i = $rb_plus(i, self.racc_t);
-              if ($truthy((function() {if ($truthy(($ret_or_3 = (function() {if ($truthy(($ret_or_4 = $rb_ge(i, 0)))) {
-                return (act = action_table['$[]'](i))
-              } else {
-                return $ret_or_4
-              }; return nil; })()))) {
-                return action_check['$[]'](i)['$=='](self.racc_state['$[]'](-1))
-              } else {
-                return $ret_or_3
-              }; return nil; })())) {
-              } else {
+              if (!(($truthy($rb_ge(i, 0)) && ($truthy((act = action_table['$[]'](i))))) && ($eqeq(action_check['$[]'](i), self.racc_state['$[]'](-1))))) {
                 act = action_default['$[]'](self.racc_state['$[]'](-1))
               };
             } else {
@@ -3845,24 +3218,24 @@ Opal.modules["racc/parser"] = function(Opal) {
             while ($truthy((act = self.$_racc_evalact(act, arg)))) {
               
             };
-          }}, $$7.$$s = self, $$7.$$arity = 0, $$7));
-      }, $Parser__racc_do_parse_rb$6.$$arity = 2);
+          }}, {$$arity: 0, $$s: self});
+      }, 2);
       
-      Opal.def(self, '$yyparse', $Parser_yyparse$8 = function $$yyparse(recv, mid) {
+      $def(self, '$yyparse', function $$yyparse(recv, mid) {
         var self = this;
 
-        return self.$__send__($$($nesting, 'Racc_YY_Parse_Method'), recv, mid, self.$_racc_setup(), true)
-      }, $Parser_yyparse$8.$$arity = 2);
+        return self.$__send__($$('Racc_YY_Parse_Method'), recv, mid, self.$_racc_setup(), true)
+      }, 2);
       
-      Opal.def(self, '$_racc_yyparse_rb', $Parser__racc_yyparse_rb$9 = function $$_racc_yyparse_rb(recv, mid, arg, c_debug) {
-        var $a, $b, $$10, self = this, action_table = nil, action_check = nil, action_default = nil, action_pointer = nil, _ = nil, token_table = nil, act = nil, i = nil;
+      $def(self, '$_racc_yyparse_rb', function $$_racc_yyparse_rb(recv, mid, arg, c_debug) {
+        var $a, $b, self = this, action_table = nil, action_check = nil, action_default = nil, action_pointer = nil, _ = nil, token_table = nil, act = nil, i = nil;
 
         
-        $b = arg, $a = Opal.to_ary($b), (action_table = ($a[0] == null ? nil : $a[0])), (action_check = ($a[1] == null ? nil : $a[1])), (action_default = ($a[2] == null ? nil : $a[2])), (action_pointer = ($a[3] == null ? nil : $a[3])), (_ = ($a[4] == null ? nil : $a[4])), (_ = ($a[5] == null ? nil : $a[5])), (_ = ($a[6] == null ? nil : $a[6])), (_ = ($a[7] == null ? nil : $a[7])), (_ = ($a[8] == null ? nil : $a[8])), (_ = ($a[9] == null ? nil : $a[9])), (token_table = ($a[10] == null ? nil : $a[10])), (_ = ($a[11] == null ? nil : $a[11])), (_ = ($a[12] == null ? nil : $a[12])), (_ = ($a[13] == null ? nil : $a[13])), $b;
+        $b = arg, $a = $to_ary($b), (action_table = ($a[0] == null ? nil : $a[0])), (action_check = ($a[1] == null ? nil : $a[1])), (action_default = ($a[2] == null ? nil : $a[2])), (action_pointer = ($a[3] == null ? nil : $a[3])), (_ = ($a[4] == null ? nil : $a[4])), (_ = ($a[5] == null ? nil : $a[5])), (_ = ($a[6] == null ? nil : $a[6])), (_ = ($a[7] == null ? nil : $a[7])), (_ = ($a[8] == null ? nil : $a[8])), (_ = ($a[9] == null ? nil : $a[9])), (token_table = ($a[10] == null ? nil : $a[10])), (_ = ($a[11] == null ? nil : $a[11])), (_ = ($a[12] == null ? nil : $a[12])), (_ = ($a[13] == null ? nil : $a[13])), $b;
         self.$_racc_init_sysvars();
         act = nil;
         i = nil;
-        return $send(self, 'catch', ["racc_end_parse"], ($$10 = function(){var self = $$10.$$s == null ? this : $$10.$$s, $c, $d, $$11;
+        return $send(self, 'catch', ["racc_end_parse"], function $$2(){var $c, $d, self = $$2.$$s == null ? this : $$2.$$s;
           if (self.racc_state == null) self.racc_state = nil;
 
           
@@ -3871,141 +3244,101 @@ Opal.modules["racc/parser"] = function(Opal) {
               
             }
           };
-          return $send(recv, '__send__', [mid], ($$11 = function(tok, val){var self = $$11.$$s == null ? this : $$11.$$s, $e, $f, $ret_or_5 = nil, $ret_or_6 = nil, $ret_or_7 = nil, $ret_or_8 = nil, $ret_or_9 = nil, $ret_or_10 = nil, $ret_or_11 = nil, $ret_or_12 = nil, $ret_or_13 = nil;
+          return $send(recv, '__send__', [mid], function $$3(tok, val){var $e, $f, self = $$3.$$s == null ? this : $$3.$$s, $ret_or_1 = nil, $ret_or_2 = nil;
             if (self.racc_t == null) self.racc_t = nil;
             if (self.racc_state == null) self.racc_state = nil;
             if (self.racc_read_next == null) self.racc_read_next = nil;
 
             
             
-            if (tok == null) {
-              tok = nil;
-            };
+            if (tok == null) tok = nil;;
             
-            if (val == null) {
-              val = nil;
-            };
+            if (val == null) val = nil;;
             if ($truthy(tok)) {
-              self.racc_t = (function() {if ($truthy(($ret_or_5 = token_table['$[]'](tok)))) {
-                return $ret_or_5
-              } else {
-                return 1
-              }; return nil; })()
+              self.racc_t = ($truthy(($ret_or_1 = token_table['$[]'](tok))) ? ($ret_or_1) : (1))
             } else {
               self.racc_t = 0
             };
             self.racc_val = val;
             self.racc_read_next = false;
             i = $rb_plus(i, self.racc_t);
-            if ($truthy((function() {if ($truthy(($ret_or_6 = (function() {if ($truthy(($ret_or_7 = $rb_ge(i, 0)))) {
-              return (act = action_table['$[]'](i))
-            } else {
-              return $ret_or_7
-            }; return nil; })()))) {
-              return action_check['$[]'](i)['$=='](self.racc_state['$[]'](-1))
-            } else {
-              return $ret_or_6
-            }; return nil; })())) {
-            } else {
+            if (!(($truthy($rb_ge(i, 0)) && ($truthy((act = action_table['$[]'](i))))) && ($eqeq(action_check['$[]'](i), self.racc_state['$[]'](-1))))) {
               act = action_default['$[]'](self.racc_state['$[]'](-1))
             };
             while ($truthy((act = self.$_racc_evalact(act, arg)))) {
               
             };
-            while ($truthy((function() {if ($truthy(($ret_or_8 = (function() {if ($truthy(($ret_or_9 = (i = action_pointer['$[]'](self.racc_state['$[]'](-1)))['$!']()))) {
-              return $ret_or_9
-            } else {
-              return self.racc_read_next['$!']()
-            }; return nil; })()))) {
-              return $ret_or_8
-            } else {
-              return self.racc_t['$=='](0)
-            }; return nil; })())) {
+            while ($truthy(($truthy(($ret_or_1 = ($truthy(($ret_or_2 = (i = action_pointer['$[]'](self.racc_state['$[]'](-1)))['$!']())) ? ($ret_or_2) : (self.racc_read_next['$!']())))) ? ($ret_or_1) : (self.racc_t['$=='](0))))) {
               
-              if ($truthy((function() {if ($truthy(($ret_or_10 = (function() {if ($truthy(($ret_or_11 = (function() {if ($truthy(($ret_or_12 = (function() {if ($truthy(($ret_or_13 = i))) {
-                return (i = $rb_plus(i, self.racc_t))
-              } else {
-                return $ret_or_13
-              }; return nil; })()))) {
-                return $rb_ge(i, 0)
-              } else {
-                return $ret_or_12
-              }; return nil; })()))) {
-                return (act = action_table['$[]'](i))
-              } else {
-                return $ret_or_11
-              }; return nil; })()))) {
-                return action_check['$[]'](i)['$=='](self.racc_state['$[]'](-1))
-              } else {
-                return $ret_or_10
-              }; return nil; })())) {
-              } else {
+              if (!(((($truthy(i) && ($truthy((i = $rb_plus(i, self.racc_t))))) && ($truthy($rb_ge(i, 0)))) && ($truthy((act = action_table['$[]'](i))))) && ($eqeq(action_check['$[]'](i), self.racc_state['$[]'](-1))))) {
                 act = action_default['$[]'](self.racc_state['$[]'](-1))
               };
               while ($truthy((act = self.$_racc_evalact(act, arg)))) {
                 
               };
-            };}, $$11.$$s = self, $$11.$$arity = 2, $$11));}, $$10.$$s = self, $$10.$$arity = 0, $$10));
-      }, $Parser__racc_yyparse_rb$9.$$arity = 4);
+            };}, {$$arity: 2, $$s: self});}, {$$arity: 0, $$s: self});
+      }, 4);
       
-      Opal.def(self, '$_racc_evalact', $Parser__racc_evalact$12 = function $$_racc_evalact(act, arg) {
-        var $a, $b, $$13, self = this, action_table = nil, action_check = nil, _ = nil, action_pointer = nil, shift_n = nil, reduce_n = nil, $ret_or_14 = nil, $ret_or_15 = nil, code = nil, $case = nil, i = nil, $ret_or_16 = nil, $ret_or_17 = nil;
+      $def(self, '$_racc_evalact', function $$_racc_evalact(act, arg) {
+        var $a, $b, self = this, action_table = nil, action_check = nil, _ = nil, action_pointer = nil, shift_n = nil, reduce_n = nil, code = nil, $ret_or_1 = nil, i = nil;
 
         
-        $b = arg, $a = Opal.to_ary($b), (action_table = ($a[0] == null ? nil : $a[0])), (action_check = ($a[1] == null ? nil : $a[1])), (_ = ($a[2] == null ? nil : $a[2])), (action_pointer = ($a[3] == null ? nil : $a[3])), (_ = ($a[4] == null ? nil : $a[4])), (_ = ($a[5] == null ? nil : $a[5])), (_ = ($a[6] == null ? nil : $a[6])), (_ = ($a[7] == null ? nil : $a[7])), (_ = ($a[8] == null ? nil : $a[8])), (_ = ($a[9] == null ? nil : $a[9])), (_ = ($a[10] == null ? nil : $a[10])), (shift_n = ($a[11] == null ? nil : $a[11])), (reduce_n = ($a[12] == null ? nil : $a[12])), (_ = ($a[13] == null ? nil : $a[13])), (_ = ($a[14] == null ? nil : $a[14])), $b;
-        if ($truthy((function() {if ($truthy(($ret_or_14 = $rb_gt(act, 0)))) {
-          return $rb_lt(act, shift_n)
-        } else {
-          return $ret_or_14
-        }; return nil; })())) {
+        $b = arg, $a = $to_ary($b), (action_table = ($a[0] == null ? nil : $a[0])), (action_check = ($a[1] == null ? nil : $a[1])), (_ = ($a[2] == null ? nil : $a[2])), (action_pointer = ($a[3] == null ? nil : $a[3])), (_ = ($a[4] == null ? nil : $a[4])), (_ = ($a[5] == null ? nil : $a[5])), (_ = ($a[6] == null ? nil : $a[6])), (_ = ($a[7] == null ? nil : $a[7])), (_ = ($a[8] == null ? nil : $a[8])), (_ = ($a[9] == null ? nil : $a[9])), (_ = ($a[10] == null ? nil : $a[10])), (shift_n = ($a[11] == null ? nil : $a[11])), (reduce_n = ($a[12] == null ? nil : $a[12])), (_ = ($a[13] == null ? nil : $a[13])), (_ = ($a[14] == null ? nil : $a[14])), $b;
+        if (($truthy($rb_gt(act, 0)) && ($truthy($rb_lt(act, shift_n))))) {
           
           if ($truthy($rb_gt(self.racc_error_status, 0))) {
-            if (self.racc_t['$=='](1)) {
-            } else {
+            if (!$eqeq(self.racc_t, 1)) {
               self.racc_error_status = $rb_minus(self.racc_error_status, 1)
-            }};
+            }
+          };
           self.racc_vstack.$push(self.racc_val);
           self.racc_state.$push(act);
           self.racc_read_next = true;
           if ($truthy(self.yydebug)) {
             
             self.racc_tstack.$push(self.racc_t);
-            self.$racc_shift(self.racc_t, self.racc_tstack, self.racc_vstack);};
-        } else if ($truthy((function() {if ($truthy(($ret_or_15 = $rb_lt(act, 0)))) {
-          return $rb_gt(act, reduce_n['$-@']())
-        } else {
-          return $ret_or_15
-        }; return nil; })())) {
+            self.$racc_shift(self.racc_t, self.racc_tstack, self.racc_vstack);
+          };
+        } else if (($truthy($rb_lt(act, 0)) && ($truthy($rb_gt(act, reduce_n['$-@']()))))) {
           
-          code = $send(self, 'catch', ["racc_jump"], ($$13 = function(){var self = $$13.$$s == null ? this : $$13.$$s;
+          code = $send(self, 'catch', ["racc_jump"], function $$4(){var self = $$4.$$s == null ? this : $$4.$$s;
             if (self.racc_state == null) self.racc_state = nil;
 
             
             self.racc_state.$push(self.$_racc_do_reduce(arg, act));
-            return false;}, $$13.$$s = self, $$13.$$arity = 0, $$13));
+            return false;}, {$$arity: 0, $$s: self});
           if ($truthy(code)) {
-            $case = code;
-            if ((1)['$===']($case)) {
-            self.racc_user_yyerror = true;
-            return reduce_n['$-@']();}
-            else if ((2)['$===']($case)) {return shift_n}
-            else {self.$raise("[Racc Bug] unknown jump code")}};
-        } else if (act['$=='](shift_n)) {
+            if ($eqeqeq(1, ($ret_or_1 = code))) {
+              
+              self.racc_user_yyerror = true;
+              return reduce_n['$-@']();
+            } else if ($eqeqeq(2, $ret_or_1)) {
+              return shift_n
+            } else {
+              self.$raise("[Racc Bug] unknown jump code")
+            }
+          };
+        } else if ($eqeq(act, shift_n)) {
           
           if ($truthy(self.yydebug)) {
-            self.$racc_accept()};
+            self.$racc_accept()
+          };
           self.$throw("racc_end_parse", self.racc_vstack['$[]'](0));
-        } else if (act['$=='](reduce_n['$-@']())) {
+        } else if ($eqeq(act, reduce_n['$-@']())) {
           
-          $case = self.racc_error_status;
-          if ((0)['$===']($case)) {if ($truthy(arg['$[]'](21))) {
+          if ($eqeqeq(0, ($ret_or_1 = self.racc_error_status))) {
+            if (!$truthy(arg['$[]'](21))) {
+              self.$on_error(self.racc_t, self.racc_val, self.racc_vstack)
+            }
+          } else if ($eqeqeq(3, $ret_or_1)) {
+            
+            if ($eqeq(self.racc_t, 0)) {
+              self.$throw("racc_end_parse", nil)
+            };
+            self.racc_read_next = true;
           } else {
-            self.$on_error(self.racc_t, self.racc_val, self.racc_vstack)
-          }}
-          else if ((3)['$===']($case)) {
-          if (self.racc_t['$=='](0)) {
-            self.$throw("racc_end_parse", nil)};
-          self.racc_read_next = true;};
+            nil
+          };
           self.racc_user_yyerror = false;
           self.racc_error_status = 3;
           while ($truthy(true)) {
@@ -4013,40 +3346,36 @@ Opal.modules["racc/parser"] = function(Opal) {
             if ($truthy((i = action_pointer['$[]'](self.racc_state['$[]'](-1))))) {
               
               i = $rb_plus(i, 1);
-              if ($truthy((function() {if ($truthy(($ret_or_16 = (function() {if ($truthy(($ret_or_17 = $rb_ge(i, 0)))) {
-                
-                return (act = action_table['$[]'](i));
-              } else {
-                return $ret_or_17
-              }; return nil; })()))) {
-                return action_check['$[]'](i)['$=='](self.racc_state['$[]'](-1))
-              } else {
-                return $ret_or_16
-              }; return nil; })())) {
-                break;};};
+              if ((($truthy($rb_ge(i, 0)) && ($truthy((act = action_table['$[]'](i))))) && ($eqeq(action_check['$[]'](i), self.racc_state['$[]'](-1))))) {
+                break;
+              };
+            };
             if ($truthy($rb_le(self.racc_state.$size(), 1))) {
-              self.$throw("racc_end_parse", nil)};
+              self.$throw("racc_end_parse", nil)
+            };
             self.racc_state.$pop();
             self.racc_vstack.$pop();
             if ($truthy(self.yydebug)) {
               
               self.racc_tstack.$pop();
-              self.$racc_e_pop(self.racc_state, self.racc_tstack, self.racc_vstack);};
+              self.$racc_e_pop(self.racc_state, self.racc_tstack, self.racc_vstack);
+            };
           };
           return act;
         } else {
-          self.$raise("" + "[Racc Bug] unknown action " + (act.$inspect()))
+          self.$raise("[Racc Bug] unknown action " + (act.$inspect()))
         };
         if ($truthy(self.yydebug)) {
-          self.$racc_next_state(self.racc_state['$[]'](-1), self.racc_state)};
+          self.$racc_next_state(self.racc_state['$[]'](-1), self.racc_state)
+        };
         return nil;
-      }, $Parser__racc_evalact$12.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$_racc_do_reduce', $Parser__racc_do_reduce$14 = function $$_racc_do_reduce(arg, act) {
-        var $a, $b, self = this, _ = nil, goto_table = nil, goto_check = nil, goto_default = nil, goto_pointer = nil, nt_base = nil, reduce_table = nil, use_result = nil, state = nil, vstack = nil, tstack = nil, i = nil, len = nil, reduce_to = nil, method_id = nil, void_array = nil, tmp_t = nil, tmp_v = nil, $writer = nil, k1 = nil, $ret_or_18 = nil, $ret_or_19 = nil, curstate = nil;
+      $def(self, '$_racc_do_reduce', function $$_racc_do_reduce(arg, act) {
+        var $a, $b, self = this, _ = nil, goto_table = nil, goto_check = nil, goto_default = nil, goto_pointer = nil, nt_base = nil, reduce_table = nil, use_result = nil, state = nil, vstack = nil, tstack = nil, i = nil, len = nil, reduce_to = nil, method_id = nil, void_array = nil, tmp_t = nil, tmp_v = nil, $writer = nil, k1 = nil, curstate = nil;
 
         
-        $b = arg, $a = Opal.to_ary($b), (_ = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), (_ = ($a[2] == null ? nil : $a[2])), (_ = ($a[3] == null ? nil : $a[3])), (goto_table = ($a[4] == null ? nil : $a[4])), (goto_check = ($a[5] == null ? nil : $a[5])), (goto_default = ($a[6] == null ? nil : $a[6])), (goto_pointer = ($a[7] == null ? nil : $a[7])), (nt_base = ($a[8] == null ? nil : $a[8])), (reduce_table = ($a[9] == null ? nil : $a[9])), (_ = ($a[10] == null ? nil : $a[10])), (_ = ($a[11] == null ? nil : $a[11])), (_ = ($a[12] == null ? nil : $a[12])), (use_result = ($a[13] == null ? nil : $a[13])), $b;
+        $b = arg, $a = $to_ary($b), (_ = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), (_ = ($a[2] == null ? nil : $a[2])), (_ = ($a[3] == null ? nil : $a[3])), (goto_table = ($a[4] == null ? nil : $a[4])), (goto_check = ($a[5] == null ? nil : $a[5])), (goto_default = ($a[6] == null ? nil : $a[6])), (goto_pointer = ($a[7] == null ? nil : $a[7])), (nt_base = ($a[8] == null ? nil : $a[8])), (reduce_table = ($a[9] == null ? nil : $a[9])), (_ = ($a[10] == null ? nil : $a[10])), (_ = ($a[11] == null ? nil : $a[11])), (_ = ($a[12] == null ? nil : $a[12])), (use_result = ($a[13] == null ? nil : $a[13])), $b;
         state = self.racc_state;
         vstack = self.racc_vstack;
         tstack = self.racc_tstack;
@@ -4056,20 +3385,22 @@ Opal.modules["racc/parser"] = function(Opal) {
         method_id = reduce_table['$[]']($rb_plus(i, 2));
         void_array = [];
         if ($truthy(self.yydebug)) {
-          tmp_t = tstack['$[]'](len['$-@'](), len)};
+          tmp_t = tstack['$[]'](len['$-@'](), len)
+        };
         tmp_v = vstack['$[]'](len['$-@'](), len);
         if ($truthy(self.yydebug)) {
           
           $writer = [len['$-@'](), len, void_array];
-          $send(tstack, '[]=', Opal.to_a($writer));
-          $writer[$rb_minus($writer["length"], 1)];};
+          $send(tstack, '[]=', $to_a($writer));
+          $writer[$rb_minus($writer["length"], 1)];
+        };
         
         $writer = [len['$-@'](), len, void_array];
-        $send(vstack, '[]=', Opal.to_a($writer));
+        $send(vstack, '[]=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         
         $writer = [len['$-@'](), len, void_array];
-        $send(state, '[]=', Opal.to_a($writer));
+        $send(state, '[]=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         if ($truthy(use_result)) {
           vstack.$push(self.$__send__(method_id, tmp_v, vstack, tmp_v['$[]'](0)))
@@ -4078,54 +3409,44 @@ Opal.modules["racc/parser"] = function(Opal) {
         };
         tstack.$push(reduce_to);
         if ($truthy(self.yydebug)) {
-          self.$racc_reduce(tmp_t, reduce_to, tstack, vstack)};
+          self.$racc_reduce(tmp_t, reduce_to, tstack, vstack)
+        };
         k1 = $rb_minus(reduce_to, nt_base);
         if ($truthy((i = goto_pointer['$[]'](k1)))) {
           
           i = $rb_plus(i, state['$[]'](-1));
-          if ($truthy((function() {if ($truthy(($ret_or_18 = (function() {if ($truthy(($ret_or_19 = $rb_ge(i, 0)))) {
-            
-            return (curstate = goto_table['$[]'](i));
-          } else {
-            return $ret_or_19
-          }; return nil; })()))) {
-            return goto_check['$[]'](i)['$=='](k1)
-          } else {
-            return $ret_or_18
-          }; return nil; })())) {
-            return curstate};};
+          if ((($truthy($rb_ge(i, 0)) && ($truthy((curstate = goto_table['$[]'](i))))) && ($eqeq(goto_check['$[]'](i), k1)))) {
+            return curstate
+          };
+        };
         return goto_default['$[]'](k1);
-      }, $Parser__racc_do_reduce$14.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$on_error', $Parser_on_error$15 = function $$on_error(t, val, vstack) {
-        var self = this, $ret_or_20 = nil;
+      $def(self, '$on_error', function $$on_error(t, val, vstack) {
+        var self = this, $ret_or_1 = nil;
 
-        return self.$raise($$($nesting, 'ParseError'), self.$sprintf("\nparse error on value %s (%s)", val.$inspect(), (function() {if ($truthy(($ret_or_20 = self.$token_to_str(t)))) {
-          return $ret_or_20
-        } else {
-          return "?"
-        }; return nil; })()))
-      }, $Parser_on_error$15.$$arity = 3);
+        return self.$raise($$('ParseError'), self.$sprintf("\nparse error on value %s (%s)", val.$inspect(), ($truthy(($ret_or_1 = self.$token_to_str(t))) ? ($ret_or_1) : ("?"))))
+      }, 3);
       
-      Opal.def(self, '$yyerror', $Parser_yyerror$16 = function $$yyerror() {
+      $def(self, '$yyerror', function $$yyerror() {
         var self = this;
 
         return self.$throw("racc_jump", 1)
-      }, $Parser_yyerror$16.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$yyaccept', $Parser_yyaccept$17 = function $$yyaccept() {
+      $def(self, '$yyaccept', function $$yyaccept() {
         var self = this;
 
         return self.$throw("racc_jump", 2)
-      }, $Parser_yyaccept$17.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$yyerrok', $Parser_yyerrok$18 = function $$yyerrok() {
+      $def(self, '$yyerrok', function $$yyerrok() {
         var self = this;
 
         return (self.racc_error_status = 0)
-      }, $Parser_yyerrok$18.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$racc_read_token', $Parser_racc_read_token$19 = function $$racc_read_token(t, tok, val) {
+      $def(self, '$racc_read_token', function $$racc_read_token(t, tok, val) {
         var self = this;
 
         
@@ -4133,19 +3454,19 @@ Opal.modules["racc/parser"] = function(Opal) {
         self.racc_debug_out.$print(tok.$inspect(), "(", self.$racc_token2str(t), ") ");
         self.racc_debug_out.$puts(val.$inspect());
         return self.racc_debug_out.$puts();
-      }, $Parser_racc_read_token$19.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$racc_shift', $Parser_racc_shift$20 = function $$racc_shift(tok, tstack, vstack) {
+      $def(self, '$racc_shift', function $$racc_shift(tok, tstack, vstack) {
         var self = this;
 
         
-        self.racc_debug_out.$puts("" + "shift   " + (self.$racc_token2str(tok)));
+        self.racc_debug_out.$puts("shift   " + (self.$racc_token2str(tok)));
         self.$racc_print_stacks(tstack, vstack);
         return self.racc_debug_out.$puts();
-      }, $Parser_racc_shift$20.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$racc_reduce', $Parser_racc_reduce$21 = function $$racc_reduce(toks, sim, tstack, vstack) {
-        var $$22, self = this, out = nil;
+      $def(self, '$racc_reduce', function $$racc_reduce(toks, sim, tstack, vstack) {
+        var self = this, out = nil;
 
         
         out = self.racc_debug_out;
@@ -4153,29 +3474,27 @@ Opal.modules["racc/parser"] = function(Opal) {
         if ($truthy(toks['$empty?']())) {
           out.$print(" <none>")
         } else {
-          $send(toks, 'each', [], ($$22 = function(t){var self = $$22.$$s == null ? this : $$22.$$s;
+          $send(toks, 'each', [], function $$5(t){var self = $$5.$$s == null ? this : $$5.$$s;
 
             
             
-            if (t == null) {
-              t = nil;
-            };
-            return out.$print(" ", self.$racc_token2str(t));}, $$22.$$s = self, $$22.$$arity = 1, $$22))
+            if (t == null) t = nil;;
+            return out.$print(" ", self.$racc_token2str(t));}, {$$arity: 1, $$s: self})
         };
-        out.$puts("" + " --> " + (self.$racc_token2str(sim)));
+        out.$puts(" --> " + (self.$racc_token2str(sim)));
         self.$racc_print_stacks(tstack, vstack);
         return self.racc_debug_out.$puts();
-      }, $Parser_racc_reduce$21.$$arity = 4);
+      }, 4);
       
-      Opal.def(self, '$racc_accept', $Parser_racc_accept$23 = function $$racc_accept() {
+      $def(self, '$racc_accept', function $$racc_accept() {
         var self = this;
 
         
         self.racc_debug_out.$puts("accept");
         return self.racc_debug_out.$puts();
-      }, $Parser_racc_accept$23.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$racc_e_pop', $Parser_racc_e_pop$24 = function $$racc_e_pop(state, tstack, vstack) {
+      $def(self, '$racc_e_pop', function $$racc_e_pop(state, tstack, vstack) {
         var self = this;
 
         
@@ -4183,141 +3502,123 @@ Opal.modules["racc/parser"] = function(Opal) {
         self.$racc_print_states(state);
         self.$racc_print_stacks(tstack, vstack);
         return self.racc_debug_out.$puts();
-      }, $Parser_racc_e_pop$24.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$racc_next_state', $Parser_racc_next_state$25 = function $$racc_next_state(curstate, state) {
+      $def(self, '$racc_next_state', function $$racc_next_state(curstate, state) {
         var self = this;
 
         
-        self.racc_debug_out.$puts("" + "goto    " + (curstate));
+        self.racc_debug_out.$puts("goto    " + (curstate));
         self.$racc_print_states(state);
         return self.racc_debug_out.$puts();
-      }, $Parser_racc_next_state$25.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$racc_print_stacks', $Parser_racc_print_stacks$26 = function $$racc_print_stacks(t, v) {
-        var $$27, self = this, out = nil;
+      $def(self, '$racc_print_stacks', function $$racc_print_stacks(t, v) {
+        var self = this, out = nil;
 
         
         out = self.racc_debug_out;
         out.$print("        [");
-        $send(t, 'each_index', [], ($$27 = function(i){var self = $$27.$$s == null ? this : $$27.$$s;
+        $send(t, 'each_index', [], function $$6(i){var self = $$6.$$s == null ? this : $$6.$$s;
 
           
           
-          if (i == null) {
-            i = nil;
-          };
-          return out.$print(" (", self.$racc_token2str(t['$[]'](i)), " ", v['$[]'](i).$inspect(), ")");}, $$27.$$s = self, $$27.$$arity = 1, $$27));
+          if (i == null) i = nil;;
+          return out.$print(" (", self.$racc_token2str(t['$[]'](i)), " ", v['$[]'](i).$inspect(), ")");}, {$$arity: 1, $$s: self});
         return out.$puts(" ]");
-      }, $Parser_racc_print_stacks$26.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$racc_print_states', $Parser_racc_print_states$28 = function $$racc_print_states(s) {
-        var $$29, self = this, out = nil;
+      $def(self, '$racc_print_states', function $$racc_print_states(s) {
+        var self = this, out = nil;
 
         
         out = self.racc_debug_out;
         out.$print("        [");
-        $send(s, 'each', [], ($$29 = function(st){var self = $$29.$$s == null ? this : $$29.$$s;
-
+        $send(s, 'each', [], function $$7(st){
           
           
-          if (st == null) {
-            st = nil;
-          };
-          return out.$print(" ", st);}, $$29.$$s = self, $$29.$$arity = 1, $$29));
+          if (st == null) st = nil;;
+          return out.$print(" ", st);}, 1);
         return out.$puts(" ]");
-      }, $Parser_racc_print_states$28.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$racc_token2str', $Parser_racc_token2str$30 = function $$racc_token2str(tok) {
-        var self = this, $ret_or_21 = nil;
+      $def(self, '$racc_token2str', function $$racc_token2str(tok) {
+        var self = this, $ret_or_1 = nil;
 
-        if ($truthy(($ret_or_21 = $$$(self.$class(), 'Racc_token_to_s_table')['$[]'](tok)))) {
-          return $ret_or_21
+        if ($truthy(($ret_or_1 = $$$(self.$class(), 'Racc_token_to_s_table')['$[]'](tok)))) {
+          return $ret_or_1
         } else {
-          return self.$raise("" + "[Racc Bug] can't convert token " + (tok) + " to string")
+          return self.$raise("[Racc Bug] can't convert token " + (tok) + " to string")
         }
-      }, $Parser_racc_token2str$30.$$arity = 1);
-      return (Opal.def(self, '$token_to_str', $Parser_token_to_str$31 = function $$token_to_str(t) {
+      }, 1);
+      return $def(self, '$token_to_str', function $$token_to_str(t) {
         var self = this;
 
         return $$$(self.$class(), 'Racc_token_to_s_table')['$[]'](t)
-      }, $Parser_token_to_str$31.$$arity = 1), nil) && 'token_to_str';
+      }, 1);
     })($nesting[0], null, $nesting);
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/messages"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $hash2 = Opal.hash2, $truthy = Opal.truthy;
+Opal.modules["parser/messages"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $const_set = Opal.const_set, $hash2 = Opal.hash2, $truthy = Opal.truthy, $eqeqeq = Opal.eqeqeq, $defs = Opal.defs;
 
-  Opal.add_stubs(['$freeze', '$[]', '$===', '$empty?', '$format']);
+  Opal.add_stubs('freeze,[],empty?,===,format');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
     var $nesting = [self].concat($parent_nesting);
 
     
-    Opal.const_set($nesting[0], 'MESSAGES', $hash2(["unicode_point_too_large", "invalid_escape", "incomplete_escape", "invalid_hex_escape", "invalid_unicode_escape", "unterminated_unicode", "escape_eof", "string_eof", "regexp_options", "cvar_name", "ivar_name", "trailing_in_number", "empty_numeric", "invalid_octal", "no_dot_digit_literal", "bare_backslash", "unexpected", "embedded_document", "heredoc_id_has_newline", "heredoc_id_ends_with_nl", "unterminated_heredoc_id", "invalid_escape_use", "ambiguous_literal", "ambiguous_regexp", "ambiguous_prefix", "triple_dot_at_eol", "nth_ref_alias", "begin_in_method", "backref_assignment", "invalid_assignment", "module_name_const", "unexpected_token", "argument_const", "argument_ivar", "argument_gvar", "argument_cvar", "duplicate_argument", "empty_symbol", "odd_hash", "singleton_literal", "dynamic_const", "const_reassignment", "module_in_def", "class_in_def", "unexpected_percent_str", "block_and_blockarg", "masgn_as_condition", "block_given_to_yield", "invalid_regexp", "invalid_return", "csend_in_lhs_of_masgn", "cant_assign_to_numparam", "reserved_for_numparam", "ordinary_param_defined", "numparam_used_in_outer_scope", "circular_argument_reference", "pm_interp_in_var_name", "lvar_name", "undefined_lvar", "duplicate_variable_name", "duplicate_pattern_key", "endless_setter", "invalid_id_to_get", "forward_arg_after_restarg", "no_anonymous_blockarg", "useless_else", "duplicate_hash_key", "invalid_encoding", "invalid_action", "clobbered", "different_replacements", "swallowed_insertions", "swallowed_insertions_conflict", "crossing_deletions", "crossing_deletions_conflict", "crossing_insertions", "crossing_insertions_conflict"], {"unicode_point_too_large": "invalid Unicode codepoint (too large)", "invalid_escape": "invalid escape character syntax", "incomplete_escape": "incomplete character syntax", "invalid_hex_escape": "invalid hex escape", "invalid_unicode_escape": "invalid Unicode escape", "unterminated_unicode": "unterminated Unicode escape", "escape_eof": "escape sequence meets end of file", "string_eof": "unterminated string meets end of file", "regexp_options": "unknown regexp options: %{options}", "cvar_name": "`%{name}' is not allowed as a class variable name", "ivar_name": "`%{name}' is not allowed as an instance variable name", "trailing_in_number": "trailing `%{character}' in number", "empty_numeric": "numeric literal without digits", "invalid_octal": "invalid octal digit", "no_dot_digit_literal": "no .<digit> floating literal anymore; put 0 before dot", "bare_backslash": "bare backslash only allowed before newline", "unexpected": "unexpected `%{character}'", "embedded_document": "embedded document meets end of file (and they embark on a romantic journey)", "heredoc_id_has_newline": "here document identifier across newlines, never match", "heredoc_id_ends_with_nl": "here document identifier ends with a newline", "unterminated_heredoc_id": "unterminated heredoc id", "invalid_escape_use": "invalid character syntax; use ?%{escape}", "ambiguous_literal": "ambiguous first argument; put parentheses or a space even after the operator", "ambiguous_regexp": "ambiguity between regexp and two divisions: wrap regexp in parentheses or add a space after `/' operator", "ambiguous_prefix": "`%{prefix}' interpreted as argument prefix", "triple_dot_at_eol": "... at EOL, should be parenthesized", "nth_ref_alias": "cannot define an alias for a back-reference variable", "begin_in_method": "BEGIN in method", "backref_assignment": "cannot assign to a back-reference variable", "invalid_assignment": "cannot assign to a keyword", "module_name_const": "class or module name must be a constant literal", "unexpected_token": "unexpected token %{token}", "argument_const": "formal argument cannot be a constant", "argument_ivar": "formal argument cannot be an instance variable", "argument_gvar": "formal argument cannot be a global variable", "argument_cvar": "formal argument cannot be a class variable", "duplicate_argument": "duplicate argument name", "empty_symbol": "empty symbol literal", "odd_hash": "odd number of entries for a hash", "singleton_literal": "cannot define a singleton method for a literal", "dynamic_const": "dynamic constant assignment", "const_reassignment": "constant re-assignment", "module_in_def": "module definition in method body", "class_in_def": "class definition in method body", "unexpected_percent_str": "%{type}: unknown type of percent-literal", "block_and_blockarg": "both block argument and literal block are passed", "masgn_as_condition": "multiple assignment in conditional context", "block_given_to_yield": "block given to yield", "invalid_regexp": "%{message}", "invalid_return": "Invalid return in class/module body", "csend_in_lhs_of_masgn": "&. inside multiple assignment destination", "cant_assign_to_numparam": "cannot assign to numbered parameter %{name}", "reserved_for_numparam": "%{name} is reserved for numbered parameter", "ordinary_param_defined": "ordinary parameter is defined", "numparam_used_in_outer_scope": "numbered parameter is already used in an outer scope", "circular_argument_reference": "circular argument reference %{var_name}", "pm_interp_in_var_name": "symbol literal with interpolation is not allowed", "lvar_name": "`%{name}' is not allowed as a local variable name", "undefined_lvar": "no such local variable: `%{name}'", "duplicate_variable_name": "duplicate variable name %{name}", "duplicate_pattern_key": "duplicate hash pattern key %{name}", "endless_setter": "setter method cannot be defined in an endless method definition", "invalid_id_to_get": "identifier %{identifier} is not valid to get", "forward_arg_after_restarg": "... after rest argument", "no_anonymous_blockarg": "no anonymous block parameter", "useless_else": "else without rescue is useless", "duplicate_hash_key": "key is duplicated and overwritten", "invalid_encoding": "literal contains escape sequences incompatible with UTF-8", "invalid_action": "cannot %{action}", "clobbered": "clobbered by: %{action}", "different_replacements": "different replacements: %{replacement} vs %{other_replacement}", "swallowed_insertions": "this replacement:", "swallowed_insertions_conflict": "swallows some inner rewriting actions:", "crossing_deletions": "the deletion of:", "crossing_deletions_conflict": "is crossing:", "crossing_insertions": "the rewriting action on:", "crossing_insertions_conflict": "is crossing that on:"}).$freeze());
+    $const_set($nesting[0], 'MESSAGES', $hash2(["unicode_point_too_large", "invalid_escape", "incomplete_escape", "invalid_hex_escape", "invalid_unicode_escape", "unterminated_unicode", "escape_eof", "string_eof", "regexp_options", "cvar_name", "ivar_name", "trailing_in_number", "empty_numeric", "invalid_octal", "no_dot_digit_literal", "bare_backslash", "unexpected", "embedded_document", "heredoc_id_has_newline", "heredoc_id_ends_with_nl", "unterminated_heredoc_id", "invalid_escape_use", "ambiguous_literal", "ambiguous_regexp", "ambiguous_prefix", "triple_dot_at_eol", "nth_ref_alias", "begin_in_method", "backref_assignment", "invalid_assignment", "module_name_const", "unexpected_token", "argument_const", "argument_ivar", "argument_gvar", "argument_cvar", "duplicate_argument", "empty_symbol", "odd_hash", "singleton_literal", "dynamic_const", "const_reassignment", "module_in_def", "class_in_def", "unexpected_percent_str", "block_and_blockarg", "masgn_as_condition", "block_given_to_yield", "invalid_regexp", "invalid_return", "csend_in_lhs_of_masgn", "cant_assign_to_numparam", "reserved_for_numparam", "ordinary_param_defined", "numparam_used_in_outer_scope", "circular_argument_reference", "pm_interp_in_var_name", "lvar_name", "undefined_lvar", "duplicate_variable_name", "duplicate_pattern_key", "endless_setter", "invalid_id_to_get", "forward_arg_after_restarg", "no_anonymous_blockarg", "useless_else", "duplicate_hash_key", "invalid_encoding", "invalid_action", "clobbered", "different_replacements", "swallowed_insertions", "swallowed_insertions_conflict", "crossing_deletions", "crossing_deletions_conflict", "crossing_insertions", "crossing_insertions_conflict"], {"unicode_point_too_large": "invalid Unicode codepoint (too large)", "invalid_escape": "invalid escape character syntax", "incomplete_escape": "incomplete character syntax", "invalid_hex_escape": "invalid hex escape", "invalid_unicode_escape": "invalid Unicode escape", "unterminated_unicode": "unterminated Unicode escape", "escape_eof": "escape sequence meets end of file", "string_eof": "unterminated string meets end of file", "regexp_options": "unknown regexp options: %{options}", "cvar_name": "`%{name}' is not allowed as a class variable name", "ivar_name": "`%{name}' is not allowed as an instance variable name", "trailing_in_number": "trailing `%{character}' in number", "empty_numeric": "numeric literal without digits", "invalid_octal": "invalid octal digit", "no_dot_digit_literal": "no .<digit> floating literal anymore; put 0 before dot", "bare_backslash": "bare backslash only allowed before newline", "unexpected": "unexpected `%{character}'", "embedded_document": "embedded document meets end of file (and they embark on a romantic journey)", "heredoc_id_has_newline": "here document identifier across newlines, never match", "heredoc_id_ends_with_nl": "here document identifier ends with a newline", "unterminated_heredoc_id": "unterminated heredoc id", "invalid_escape_use": "invalid character syntax; use ?%{escape}", "ambiguous_literal": "ambiguous first argument; put parentheses or a space even after the operator", "ambiguous_regexp": "ambiguity between regexp and two divisions: wrap regexp in parentheses or add a space after `/' operator", "ambiguous_prefix": "`%{prefix}' interpreted as argument prefix", "triple_dot_at_eol": "... at EOL, should be parenthesized", "nth_ref_alias": "cannot define an alias for a back-reference variable", "begin_in_method": "BEGIN in method", "backref_assignment": "cannot assign to a back-reference variable", "invalid_assignment": "cannot assign to a keyword", "module_name_const": "class or module name must be a constant literal", "unexpected_token": "unexpected token %{token}", "argument_const": "formal argument cannot be a constant", "argument_ivar": "formal argument cannot be an instance variable", "argument_gvar": "formal argument cannot be a global variable", "argument_cvar": "formal argument cannot be a class variable", "duplicate_argument": "duplicate argument name", "empty_symbol": "empty symbol literal", "odd_hash": "odd number of entries for a hash", "singleton_literal": "cannot define a singleton method for a literal", "dynamic_const": "dynamic constant assignment", "const_reassignment": "constant re-assignment", "module_in_def": "module definition in method body", "class_in_def": "class definition in method body", "unexpected_percent_str": "%{type}: unknown type of percent-literal", "block_and_blockarg": "both block argument and literal block are passed", "masgn_as_condition": "multiple assignment in conditional context", "block_given_to_yield": "block given to yield", "invalid_regexp": "%{message}", "invalid_return": "Invalid return in class/module body", "csend_in_lhs_of_masgn": "&. inside multiple assignment destination", "cant_assign_to_numparam": "cannot assign to numbered parameter %{name}", "reserved_for_numparam": "%{name} is reserved for numbered parameter", "ordinary_param_defined": "ordinary parameter is defined", "numparam_used_in_outer_scope": "numbered parameter is already used in an outer scope", "circular_argument_reference": "circular argument reference %{var_name}", "pm_interp_in_var_name": "symbol literal with interpolation is not allowed", "lvar_name": "`%{name}' is not allowed as a local variable name", "undefined_lvar": "no such local variable: `%{name}'", "duplicate_variable_name": "duplicate variable name %{name}", "duplicate_pattern_key": "duplicate hash pattern key %{name}", "endless_setter": "setter method cannot be defined in an endless method definition", "invalid_id_to_get": "identifier %{identifier} is not valid to get", "forward_arg_after_restarg": "... after rest argument", "no_anonymous_blockarg": "no anonymous block parameter", "useless_else": "else without rescue is useless", "duplicate_hash_key": "key is duplicated and overwritten", "invalid_encoding": "literal contains escape sequences incompatible with UTF-8", "invalid_action": "cannot %{action}", "clobbered": "clobbered by: %{action}", "different_replacements": "different replacements: %{replacement} vs %{other_replacement}", "swallowed_insertions": "this replacement:", "swallowed_insertions_conflict": "swallows some inner rewriting actions:", "crossing_deletions": "the deletion of:", "crossing_deletions_conflict": "is crossing:", "crossing_insertions": "the rewriting action on:", "crossing_insertions_conflict": "is crossing that on:"}).$freeze());
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Messages');
 
-      var $nesting = [self].concat($parent_nesting), $Messages_compile$1;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (Opal.defs(self, '$compile', $Messages_compile$1 = function $$compile(reason, arguments$) {
-        var self = this, template = nil, $ret_or_1 = nil;
+      return $defs(self, '$compile', function $$compile(reason, arguments$) {
+        var self = this, template = nil;
 
         
-        template = $$($nesting, 'MESSAGES')['$[]'](reason);
-        if ($truthy((function() {if ($truthy(($ret_or_1 = $$($nesting, 'Hash')['$==='](arguments$)))) {
-          return arguments$['$empty?']()
-        } else {
-          return $ret_or_1
-        }; return nil; })())) {
-          return template};
+        template = $$('MESSAGES')['$[]'](reason);
+        if (($eqeqeq($$('Hash'), arguments$) && ($truthy(arguments$['$empty?']())))) {
+          return template
+        };
         return self.$format(template, arguments$);
-      }, $Messages_compile$1.$$arity = 2), nil) && 'compile'
+      }, 2)
     })($nesting[0], $nesting);
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/deprecation"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $truthy = Opal.truthy;
+Opal.modules["parser/deprecation"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $truthy = Opal.truthy, $def = Opal.def;
 
-  Opal.add_stubs(['$attr_writer', '$warn']);
+  Opal.add_stubs('attr_writer,warn');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
     var $nesting = [self].concat($parent_nesting);
 
-    return (function($base, $parent_nesting) {
+    return (function($base) {
       var self = $module($base, 'Deprecation');
 
-      var $nesting = [self].concat($parent_nesting), $Deprecation_warn_of_deprecation$1;
-
+      
       
       self.$attr_writer("warned_of_deprecation");
-      return (Opal.def(self, '$warn_of_deprecation', $Deprecation_warn_of_deprecation$1 = function $$warn_of_deprecation() {
+      return $def(self, '$warn_of_deprecation', function $$warn_of_deprecation() {
         var self = this, $ret_or_1 = nil, $ret_or_2 = nil;
         if (self.warned_of_deprecation == null) self.warned_of_deprecation = nil;
 
-        return (self.warned_of_deprecation = (function() {if ($truthy(($ret_or_1 = self.warned_of_deprecation))) {
-          return $ret_or_1
-        } else if ($truthy(($ret_or_2 = self.$warn($$$(self, 'DEPRECATION_WARNING'))))) {
-          return $ret_or_2
-        } else {
-          return true
-        }; return nil; })())
-      }, $Deprecation_warn_of_deprecation$1.$$arity = 0), nil) && 'warn_of_deprecation';
-    })($nesting[0], $nesting)
+        return (self.warned_of_deprecation = ($truthy(($ret_or_1 = self.warned_of_deprecation)) ? ($ret_or_1) : ($truthy(($ret_or_2 = self.$warn($$$(self, 'DEPRECATION_WARNING')))) ? ($ret_or_2) : (true))))
+      }, 0);
+    })($nesting[0])
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/ast/processor"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $alias = Opal.alias, $truthy = Opal.truthy, $slice = Opal.slice;
+Opal.modules["parser/ast/processor"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $def = Opal.def, $alias = Opal.alias, $to_a = Opal.to_a, $not = Opal.not, $truthy = Opal.truthy, $slice = Opal.slice;
 
-  Opal.add_stubs(['$updated', '$process_all', '$on_var', '$!', '$nil?', '$process', '$on_vasgn', '$on_argument', '$is_a?', '$[]', '$children', '$process_regular_node', '$warn']);
+  Opal.add_stubs('updated,process_all,on_var,!,nil?,process,on_vasgn,on_argument,is_a?,[],children,process_regular_node,warn');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -4331,15 +3632,15 @@ Opal.modules["parser/ast/processor"] = function(Opal) {
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'Processor');
 
-        var $nesting = [self].concat($parent_nesting), $Processor_process_regular_node$1, $Processor_on_var$2, $Processor_process_variable_node$3, $Processor_on_vasgn$4, $Processor_process_var_asgn_node$5, $Processor_on_op_asgn$6, $Processor_on_const$7, $Processor_on_casgn$8, $Processor_on_argument$9, $Processor_process_argument_node$10, $Processor_on_procarg0$11, $Processor_on_def$12, $Processor_on_defs$13, $Processor_on_send$14, $Processor_on_numblock$15, $Processor_process_variable_node$16, $Processor_process_var_asgn_node$17, $Processor_process_argument_node$18, $Processor_on_empty_else$19;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
         
         
-        Opal.def(self, '$process_regular_node', $Processor_process_regular_node$1 = function $$process_regular_node(node) {
+        $def(self, '$process_regular_node', function $$process_regular_node(node) {
           var self = this;
 
           return node.$updated(nil, self.$process_all(node))
-        }, $Processor_process_regular_node$1.$$arity = 1);
+        }, 1);
         $alias(self, "on_dstr", "process_regular_node");
         $alias(self, "on_dsym", "process_regular_node");
         $alias(self, "on_regexp", "process_regular_node");
@@ -4353,17 +3654,16 @@ Opal.modules["parser/ast/processor"] = function(Opal) {
         $alias(self, "on_irange", "process_regular_node");
         $alias(self, "on_erange", "process_regular_node");
         
-        Opal.def(self, '$on_var', $Processor_on_var$2 = function $$on_var(node) {
-          var self = this;
-
+        $def(self, '$on_var', function $$on_var(node) {
+          
           return node
-        }, $Processor_on_var$2.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$process_variable_node', $Processor_process_variable_node$3 = function $$process_variable_node(node) {
+        $def(self, '$process_variable_node', function $$process_variable_node(node) {
           var self = this;
 
           return self.$on_var(node)
-        }, $Processor_process_variable_node$3.$$arity = 1);
+        }, 1);
         $alias(self, "on_lvar", "process_variable_node");
         $alias(self, "on_ivar", "process_variable_node");
         $alias(self, "on_gvar", "process_variable_node");
@@ -4371,23 +3671,23 @@ Opal.modules["parser/ast/processor"] = function(Opal) {
         $alias(self, "on_back_ref", "process_variable_node");
         $alias(self, "on_nth_ref", "process_variable_node");
         
-        Opal.def(self, '$on_vasgn', $Processor_on_vasgn$4 = function $$on_vasgn(node) {
+        $def(self, '$on_vasgn', function $$on_vasgn(node) {
           var $a, self = this, name = nil, value_node = nil;
 
           
-          $a = [].concat(Opal.to_a(node)), (name = ($a[0] == null ? nil : $a[0])), (value_node = ($a[1] == null ? nil : $a[1])), $a;
-          if ($truthy(value_node['$nil?']()['$!']())) {
+          $a = [].concat($to_a(node)), (name = ($a[0] == null ? nil : $a[0])), (value_node = ($a[1] == null ? nil : $a[1])), $a;
+          if ($not(value_node['$nil?']())) {
             return node.$updated(nil, [name, self.$process(value_node)])
           } else {
             return node
           };
-        }, $Processor_on_vasgn$4.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$process_var_asgn_node', $Processor_process_var_asgn_node$5 = function $$process_var_asgn_node(node) {
+        $def(self, '$process_var_asgn_node', function $$process_var_asgn_node(node) {
           var self = this;
 
           return self.$on_vasgn(node)
-        }, $Processor_process_var_asgn_node$5.$$arity = 1);
+        }, 1);
         $alias(self, "on_lvasgn", "process_var_asgn_node");
         $alias(self, "on_ivasgn", "process_var_asgn_node");
         $alias(self, "on_gvasgn", "process_var_asgn_node");
@@ -4395,54 +3695,54 @@ Opal.modules["parser/ast/processor"] = function(Opal) {
         $alias(self, "on_and_asgn", "process_regular_node");
         $alias(self, "on_or_asgn", "process_regular_node");
         
-        Opal.def(self, '$on_op_asgn', $Processor_on_op_asgn$6 = function $$on_op_asgn(node) {
+        $def(self, '$on_op_asgn', function $$on_op_asgn(node) {
           var $a, self = this, var_node = nil, method_name = nil, value_node = nil;
 
           
-          $a = [].concat(Opal.to_a(node)), (var_node = ($a[0] == null ? nil : $a[0])), (method_name = ($a[1] == null ? nil : $a[1])), (value_node = ($a[2] == null ? nil : $a[2])), $a;
+          $a = [].concat($to_a(node)), (var_node = ($a[0] == null ? nil : $a[0])), (method_name = ($a[1] == null ? nil : $a[1])), (value_node = ($a[2] == null ? nil : $a[2])), $a;
           return node.$updated(nil, [self.$process(var_node), method_name, self.$process(value_node)]);
-        }, $Processor_on_op_asgn$6.$$arity = 1);
+        }, 1);
         $alias(self, "on_mlhs", "process_regular_node");
         $alias(self, "on_masgn", "process_regular_node");
         
-        Opal.def(self, '$on_const', $Processor_on_const$7 = function $$on_const(node) {
+        $def(self, '$on_const', function $$on_const(node) {
           var $a, self = this, scope_node = nil, name = nil;
 
           
-          $a = [].concat(Opal.to_a(node)), (scope_node = ($a[0] == null ? nil : $a[0])), (name = ($a[1] == null ? nil : $a[1])), $a;
+          $a = [].concat($to_a(node)), (scope_node = ($a[0] == null ? nil : $a[0])), (name = ($a[1] == null ? nil : $a[1])), $a;
           return node.$updated(nil, [self.$process(scope_node), name]);
-        }, $Processor_on_const$7.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$on_casgn', $Processor_on_casgn$8 = function $$on_casgn(node) {
+        $def(self, '$on_casgn', function $$on_casgn(node) {
           var $a, self = this, scope_node = nil, name = nil, value_node = nil;
 
           
-          $a = [].concat(Opal.to_a(node)), (scope_node = ($a[0] == null ? nil : $a[0])), (name = ($a[1] == null ? nil : $a[1])), (value_node = ($a[2] == null ? nil : $a[2])), $a;
-          if ($truthy(value_node['$nil?']()['$!']())) {
+          $a = [].concat($to_a(node)), (scope_node = ($a[0] == null ? nil : $a[0])), (name = ($a[1] == null ? nil : $a[1])), (value_node = ($a[2] == null ? nil : $a[2])), $a;
+          if ($not(value_node['$nil?']())) {
             return node.$updated(nil, [self.$process(scope_node), name, self.$process(value_node)])
           } else {
             return node.$updated(nil, [self.$process(scope_node), name])
           };
-        }, $Processor_on_casgn$8.$$arity = 1);
+        }, 1);
         $alias(self, "on_args", "process_regular_node");
         
-        Opal.def(self, '$on_argument', $Processor_on_argument$9 = function $$on_argument(node) {
+        $def(self, '$on_argument', function $$on_argument(node) {
           var $a, self = this, arg_name = nil, value_node = nil;
 
           
-          $a = [].concat(Opal.to_a(node)), (arg_name = ($a[0] == null ? nil : $a[0])), (value_node = ($a[1] == null ? nil : $a[1])), $a;
-          if ($truthy(value_node['$nil?']()['$!']())) {
+          $a = [].concat($to_a(node)), (arg_name = ($a[0] == null ? nil : $a[0])), (value_node = ($a[1] == null ? nil : $a[1])), $a;
+          if ($not(value_node['$nil?']())) {
             return node.$updated(nil, [arg_name, self.$process(value_node)])
           } else {
             return node
           };
-        }, $Processor_on_argument$9.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$process_argument_node', $Processor_process_argument_node$10 = function $$process_argument_node(node) {
+        $def(self, '$process_argument_node', function $$process_argument_node(node) {
           var self = this;
 
           return self.$on_argument(node)
-        }, $Processor_process_argument_node$10.$$arity = 1);
+        }, 1);
         $alias(self, "on_arg", "process_argument_node");
         $alias(self, "on_optarg", "process_argument_node");
         $alias(self, "on_restarg", "process_argument_node");
@@ -4453,15 +3753,15 @@ Opal.modules["parser/ast/processor"] = function(Opal) {
         $alias(self, "on_kwrestarg", "process_argument_node");
         $alias(self, "on_forward_arg", "process_argument_node");
         
-        Opal.def(self, '$on_procarg0', $Processor_on_procarg0$11 = function $$on_procarg0(node) {
+        $def(self, '$on_procarg0', function $$on_procarg0(node) {
           var self = this;
 
-          if ($truthy(node.$children()['$[]'](0)['$is_a?']($$($nesting, 'Symbol')))) {
+          if ($truthy(node.$children()['$[]'](0)['$is_a?']($$('Symbol')))) {
             return self.$on_argument(node)
           } else {
             return self.$process_regular_node(node)
           }
-        }, $Processor_on_procarg0$11.$$arity = 1);
+        }, 1);
         $alias(self, "on_arg_expr", "process_regular_node");
         $alias(self, "on_restarg_expr", "process_regular_node");
         $alias(self, "on_blockarg_expr", "process_regular_node");
@@ -4470,46 +3770,47 @@ Opal.modules["parser/ast/processor"] = function(Opal) {
         $alias(self, "on_class", "process_regular_node");
         $alias(self, "on_sclass", "process_regular_node");
         
-        Opal.def(self, '$on_def', $Processor_on_def$12 = function $$on_def(node) {
+        $def(self, '$on_def', function $$on_def(node) {
           var $a, self = this, name = nil, args_node = nil, body_node = nil;
 
           
-          $a = [].concat(Opal.to_a(node)), (name = ($a[0] == null ? nil : $a[0])), (args_node = ($a[1] == null ? nil : $a[1])), (body_node = ($a[2] == null ? nil : $a[2])), $a;
+          $a = [].concat($to_a(node)), (name = ($a[0] == null ? nil : $a[0])), (args_node = ($a[1] == null ? nil : $a[1])), (body_node = ($a[2] == null ? nil : $a[2])), $a;
           return node.$updated(nil, [name, self.$process(args_node), self.$process(body_node)]);
-        }, $Processor_on_def$12.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$on_defs', $Processor_on_defs$13 = function $$on_defs(node) {
+        $def(self, '$on_defs', function $$on_defs(node) {
           var $a, self = this, definee_node = nil, name = nil, args_node = nil, body_node = nil;
 
           
-          $a = [].concat(Opal.to_a(node)), (definee_node = ($a[0] == null ? nil : $a[0])), (name = ($a[1] == null ? nil : $a[1])), (args_node = ($a[2] == null ? nil : $a[2])), (body_node = ($a[3] == null ? nil : $a[3])), $a;
+          $a = [].concat($to_a(node)), (definee_node = ($a[0] == null ? nil : $a[0])), (name = ($a[1] == null ? nil : $a[1])), (args_node = ($a[2] == null ? nil : $a[2])), (body_node = ($a[3] == null ? nil : $a[3])), $a;
           return node.$updated(nil, [self.$process(definee_node), name, self.$process(args_node), self.$process(body_node)]);
-        }, $Processor_on_defs$13.$$arity = 1);
+        }, 1);
         $alias(self, "on_undef", "process_regular_node");
         $alias(self, "on_alias", "process_regular_node");
         
-        Opal.def(self, '$on_send', $Processor_on_send$14 = function $$on_send(node) {
+        $def(self, '$on_send', function $$on_send(node) {
           var $a, self = this, receiver_node = nil, method_name = nil, arg_nodes = nil;
 
           
-          $a = [].concat(Opal.to_a(node)), (receiver_node = ($a[0] == null ? nil : $a[0])), (method_name = ($a[1] == null ? nil : $a[1])), (arg_nodes = $slice.call($a, 2)), $a;
+          $a = [].concat($to_a(node)), (receiver_node = ($a[0] == null ? nil : $a[0])), (method_name = ($a[1] == null ? nil : $a[1])), (arg_nodes = $slice.call($a, 2)), $a;
           if ($truthy(receiver_node)) {
-            receiver_node = self.$process(receiver_node)};
-          return node.$updated(nil, [receiver_node, method_name].concat(Opal.to_a(self.$process_all(arg_nodes))));
-        }, $Processor_on_send$14.$$arity = 1);
+            receiver_node = self.$process(receiver_node)
+          };
+          return node.$updated(nil, [receiver_node, method_name].concat($to_a(self.$process_all(arg_nodes))));
+        }, 1);
         $alias(self, "on_csend", "on_send");
         $alias(self, "on_index", "process_regular_node");
         $alias(self, "on_indexasgn", "process_regular_node");
         $alias(self, "on_block", "process_regular_node");
         $alias(self, "on_lambda", "process_regular_node");
         
-        Opal.def(self, '$on_numblock', $Processor_on_numblock$15 = function $$on_numblock(node) {
+        $def(self, '$on_numblock', function $$on_numblock(node) {
           var $a, self = this, method_call = nil, max_numparam = nil, body = nil;
 
           
-          $a = [].concat(Opal.to_a(node)), (method_call = ($a[0] == null ? nil : $a[0])), (max_numparam = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), $a;
+          $a = [].concat($to_a(node)), (method_call = ($a[0] == null ? nil : $a[0])), (max_numparam = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), $a;
           return node.$updated(nil, [self.$process(method_call), max_numparam, self.$process(body)]);
-        }, $Processor_on_numblock$15.$$arity = 1);
+        }, 1);
         $alias(self, "on_while", "process_regular_node");
         $alias(self, "on_while_post", "process_regular_node");
         $alias(self, "on_until", "process_regular_node");
@@ -4558,44 +3859,42 @@ Opal.modules["parser/ast/processor"] = function(Opal) {
         $alias(self, "on_const_pattern", "process_regular_node");
         $alias(self, "on_find_pattern", "process_regular_node");
         
-        Opal.def(self, '$process_variable_node', $Processor_process_variable_node$16 = function $$process_variable_node(node) {
+        $def(self, '$process_variable_node', function $$process_variable_node(node) {
           var self = this;
 
           
-          self.$warn("" + "Parser::AST::Processor#process_variable_node is deprecated as a" + " public API and will be removed. Please use " + "Parser::AST::Processor#on_var instead.");
+          self.$warn("Parser::AST::Processor#process_variable_node is deprecated as a" + " public API and will be removed. Please use " + "Parser::AST::Processor#on_var instead.");
           return self.$on_var(node);
-        }, $Processor_process_variable_node$16.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$process_var_asgn_node', $Processor_process_var_asgn_node$17 = function $$process_var_asgn_node(node) {
+        $def(self, '$process_var_asgn_node', function $$process_var_asgn_node(node) {
           var self = this;
 
           
-          self.$warn("" + "Parser::AST::Processor#process_var_asgn_node is deprecated as a" + " public API and will be removed. Please use " + "Parser::AST::Processor#on_vasgn instead.");
+          self.$warn("Parser::AST::Processor#process_var_asgn_node is deprecated as a" + " public API and will be removed. Please use " + "Parser::AST::Processor#on_vasgn instead.");
           return self.$on_vasgn(node);
-        }, $Processor_process_var_asgn_node$17.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$process_argument_node', $Processor_process_argument_node$18 = function $$process_argument_node(node) {
+        $def(self, '$process_argument_node', function $$process_argument_node(node) {
           var self = this;
 
           
-          self.$warn("" + "Parser::AST::Processor#process_argument_node is deprecated as a" + " public API and will be removed. Please use " + "Parser::AST::Processor#on_argument instead.");
+          self.$warn("Parser::AST::Processor#process_argument_node is deprecated as a" + " public API and will be removed. Please use " + "Parser::AST::Processor#on_argument instead.");
           return self.$on_argument(node);
-        }, $Processor_process_argument_node$18.$$arity = 1);
-        return (Opal.def(self, '$on_empty_else', $Processor_on_empty_else$19 = function $$on_empty_else(node) {
-          var self = this;
-
+        }, 1);
+        return $def(self, '$on_empty_else', function $$on_empty_else(node) {
+          
           return node
-        }, $Processor_on_empty_else$19.$$arity = 1), nil) && 'on_empty_else';
-      })($nesting[0], $$$($$$('::', 'AST'), 'Processor'), $nesting)
+        }, 1);
+      })($nesting[0], $$$($$$('AST'), 'Processor'), $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/meta"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module;
+Opal.modules["parser/meta"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $const_set = Opal.const_set;
 
-  Opal.add_stubs(['$freeze', '$to_set']);
+  Opal.add_stubs('freeze,to_set');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -4606,28 +3905,15 @@ Opal.modules["parser/meta"] = function(Opal) {
 
       var $nesting = [self].concat($parent_nesting);
 
-      return Opal.const_set($nesting[0], 'NODE_TYPES', ["true", "false", "nil", "int", "float", "str", "dstr", "sym", "dsym", "xstr", "regopt", "regexp", "array", "splat", "pair", "kwsplat", "hash", "irange", "erange", "self", "lvar", "ivar", "cvar", "gvar", "const", "defined?", "lvasgn", "ivasgn", "cvasgn", "gvasgn", "casgn", "mlhs", "masgn", "op_asgn", "and_asgn", "ensure", "rescue", "arg_expr", "or_asgn", "back_ref", "nth_ref", "match_with_lvasgn", "match_current_line", "module", "class", "sclass", "def", "defs", "undef", "alias", "args", "cbase", "arg", "optarg", "restarg", "blockarg", "block_pass", "kwarg", "kwoptarg", "kwrestarg", "kwnilarg", "send", "csend", "super", "zsuper", "yield", "block", "and", "not", "or", "if", "when", "case", "while", "until", "while_post", "until_post", "for", "break", "next", "redo", "return", "resbody", "kwbegin", "begin", "retry", "preexe", "postexe", "iflipflop", "eflipflop", "shadowarg", "complex", "rational", "__FILE__", "__LINE__", "__ENCODING__", "ident", "lambda", "indexasgn", "index", "procarg0", "restarg_expr", "blockarg_expr", "objc_kwarg", "objc_restarg", "objc_varargs", "numargs", "numblock", "forward_args", "forwarded_args", "forward_arg", "case_match", "in_match", "in_pattern", "match_var", "pin", "match_alt", "match_as", "match_rest", "array_pattern", "match_with_trailing_comma", "array_pattern_with_tail", "hash_pattern", "const_pattern", "if_guard", "unless_guard", "match_nil_pattern", "empty_else", "find_pattern", "kwargs", "match_pattern_p", "match_pattern"].$to_set().$freeze())
+      return $const_set($nesting[0], 'NODE_TYPES', ["true", "false", "nil", "int", "float", "str", "dstr", "sym", "dsym", "xstr", "regopt", "regexp", "array", "splat", "pair", "kwsplat", "hash", "irange", "erange", "self", "lvar", "ivar", "cvar", "gvar", "const", "defined?", "lvasgn", "ivasgn", "cvasgn", "gvasgn", "casgn", "mlhs", "masgn", "op_asgn", "and_asgn", "ensure", "rescue", "arg_expr", "or_asgn", "back_ref", "nth_ref", "match_with_lvasgn", "match_current_line", "module", "class", "sclass", "def", "defs", "undef", "alias", "args", "cbase", "arg", "optarg", "restarg", "blockarg", "block_pass", "kwarg", "kwoptarg", "kwrestarg", "kwnilarg", "send", "csend", "super", "zsuper", "yield", "block", "and", "not", "or", "if", "when", "case", "while", "until", "while_post", "until_post", "for", "break", "next", "redo", "return", "resbody", "kwbegin", "begin", "retry", "preexe", "postexe", "iflipflop", "eflipflop", "shadowarg", "complex", "rational", "__FILE__", "__LINE__", "__ENCODING__", "ident", "lambda", "indexasgn", "index", "procarg0", "restarg_expr", "blockarg_expr", "objc_kwarg", "objc_restarg", "objc_varargs", "numargs", "numblock", "forward_args", "forwarded_args", "forward_arg", "case_match", "in_match", "in_pattern", "match_var", "pin", "match_alt", "match_as", "match_rest", "array_pattern", "match_with_trailing_comma", "array_pattern_with_tail", "hash_pattern", "const_pattern", "if_guard", "unless_guard", "match_nil_pattern", "empty_else", "find_pattern", "kwargs", "match_pattern_p", "match_pattern"].$to_set().$freeze())
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/buffer"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  function $rb_ge(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs >= rhs : lhs['$>='](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $enc = Opal.enc, $truthy = Opal.truthy, $gvars = Opal.gvars, $hash2 = Opal.hash2, $send = Opal.send, $send2 = Opal.send2, $find_super = Opal.find_super;
-
-  Opal.add_stubs(['$attr_reader', '$empty?', '$=~', '$start_with?', '$freeze', '$==', '$[]', '$nil?', '$!=', '$match', '$find', '$encoding', '$recognize_encoding', '$force_encoding', '$encode', '$to_s', '$source=', '$-', '$open', '$read', '$raise', '$frozen?', '$dup', '$reencode_string', '$class', '$valid_encoding?', '$name', '$raw_source=', '$gsub', '$!', '$ascii_only?', '$line_index_for_position', '$line_begins', '$+', '$to_a', '$lines', '$end_with?', '$<<', '$each', '$chomp!', '$fetch', '$source_lines', '$<', '$>=', '$size', '$new', '$source', '$source_range', '$private', '$index', '$bsearch', '$[]=', '$method_defined?', '$bsearch_index']);
+Opal.modules["parser/source/buffer"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $const_set = Opal.const_set, $regexp = Opal.regexp, $enc = Opal.enc, $truthy = Opal.truthy, $gvars = Opal.gvars, $eqeq = Opal.eqeq, $neqeq = Opal.neqeq, $defs = Opal.defs, $hash2 = Opal.hash2, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $def = Opal.def, $not = Opal.not, $rb_plus = Opal.rb_plus, $rb_ge = Opal.rb_ge, $rb_lt = Opal.rb_lt, $send2 = Opal.send2, $find_super = Opal.find_super;
+
+  Opal.add_stubs('attr_reader,empty?,=~,start_with?,freeze,==,[],!=,nil?,match,find,encoding,recognize_encoding,force_encoding,encode,to_s,source=,-,open,read,raise,frozen?,dup,reencode_string,class,valid_encoding?,name,raw_source=,gsub,!,ascii_only?,line_index_for_position,line_begins,+,to_a,lines,end_with?,<<,each,chomp!,fetch,source_lines,>=,size,<,new,source,source_range,private,index,bsearch,[]=,method_defined?,bsearch_index');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -4641,68 +3927,58 @@ Opal.modules["parser/source/buffer"] = function(Opal) {
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'Buffer');
 
-        var $nesting = [self].concat($parent_nesting), $Buffer_recognize_encoding$1, $Buffer_reencode_string$2, $Buffer_initialize$3, $Buffer_read$4, $Buffer_source$6, $Buffer_source$eq$7, $Buffer_raw_source$eq$8, $Buffer_slice$9, $Buffer_decompose_position$10, $Buffer_line_for_position$11, $Buffer_column_for_position$12, $Buffer_source_lines$13, $Buffer_source_line$15, $Buffer_line_range$16, $Buffer_source_range$17, $Buffer_last_line$18, $Buffer_freeze$19, $Buffer_inspect$20, $Buffer_line_begins$21, $Buffer_line_index_for_position$22, $Buffer_bsearch$23, $Buffer_bsearch$25;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.name = self.$$prototype.source = self.$$prototype.slice_source = self.$$prototype.first_line = self.$$prototype.lines = self.$$prototype.source_range = self.$$prototype.line_begins = self.$$prototype.line_index_for_position = self.$$prototype.line_range = nil;
+        $proto.name = $proto.source = $proto.slice_source = $proto.first_line = $proto.lines = $proto.source_range = $proto.line_begins = $proto.line_index_for_position = $proto.line_range = nil;
         
         self.$attr_reader("name", "first_line");
-        Opal.const_set($nesting[0], 'ENCODING_RE', Opal.regexp([$enc("[\\s#](en)?coding\\s*[:=]\\s*", "ASCII-8BIT"), $enc("(", "ASCII-8BIT"), $enc("", "ASCII-8BIT"), $enc("(utf8-mac)", "ASCII-8BIT"), $enc("|", "ASCII-8BIT"), $enc("", "ASCII-8BIT"), $enc("([A-Za-z0-9_-]+?)(-unix|-dos|-mac)", "ASCII-8BIT"), $enc("|", "ASCII-8BIT"), $enc("([A-Za-z0-9_-]+)", "ASCII-8BIT"), $enc(")", "ASCII-8BIT"), $enc("", "ASCII-8BIT")]));
-        Opal.defs(self, '$recognize_encoding', $Buffer_recognize_encoding$1 = function $$recognize_encoding(string) {
-          var $a, $b, self = this, first_line = nil, second_line = nil, encoding_line = nil, $ret_or_1 = nil, result = nil, $ret_or_2 = nil, $ret_or_3 = nil;
+        $const_set($nesting[0], 'ENCODING_RE', $regexp([$enc("[\\s#](en)?coding\\s*[:=]\\s*", "ASCII-8BIT"), $enc("(", "ASCII-8BIT"), $enc("", "ASCII-8BIT"), $enc("(utf8-mac)", "ASCII-8BIT"), $enc("|", "ASCII-8BIT"), $enc("", "ASCII-8BIT"), $enc("([A-Za-z0-9_-]+?)(-unix|-dos|-mac)", "ASCII-8BIT"), $enc("|", "ASCII-8BIT"), $enc("([A-Za-z0-9_-]+)", "ASCII-8BIT"), $enc(")", "ASCII-8BIT"), $enc("", "ASCII-8BIT")]));
+        $defs(self, '$recognize_encoding', function $$recognize_encoding(string) {
+          var $a, $b, first_line = nil, second_line = nil, encoding_line = nil, result = nil, $ret_or_1 = nil, $ret_or_2 = nil;
 
           
           if ($truthy(string['$empty?']())) {
-            return nil};
+            return nil
+          };
           string['$=~'](/^(.*)\n?(.*\n)?/);
           $a = [(($b = $gvars['~']) === nil ? nil : $b['$[]'](1)), (($b = $gvars['~']) === nil ? nil : $b['$[]'](2))], (first_line = $a[0]), (second_line = $a[1]), $a;
           if ($truthy(first_line['$start_with?']($enc("\xEF\xBB\xBF", "ASCII-8BIT").$freeze()))) {
-            return $$$($$($nesting, 'Encoding'), 'UTF_8')
-          } else if (first_line['$[]'](0, 2)['$==']($enc("#!", "ASCII-8BIT").$freeze())) {
+            return $$$($$('Encoding'), 'UTF_8')
+          } else if ($eqeq(first_line['$[]'](0, 2), $enc("#!", "ASCII-8BIT").$freeze())) {
             encoding_line = second_line
           } else {
             encoding_line = first_line
           };
-          if ($truthy((function() {if ($truthy(($ret_or_1 = encoding_line['$nil?']()))) {
-            return $ret_or_1
-          } else {
-            return encoding_line['$[]'](0)['$!=']($enc("#", "ASCII-8BIT"))
-          }; return nil; })())) {
-            return nil};
-          if ($truthy((result = $$($nesting, 'ENCODING_RE').$match(encoding_line)))) {
-            return $$($nesting, 'Encoding').$find((function() {if ($truthy(($ret_or_2 = (function() {if ($truthy(($ret_or_3 = result['$[]'](3)))) {
-              return $ret_or_3
-            } else {
-              return result['$[]'](4)
-            }; return nil; })()))) {
-              return $ret_or_2
-            } else {
-              return result['$[]'](6)
-            }; return nil; })())
+          if (($truthy(encoding_line['$nil?']()) || ($neqeq(encoding_line['$[]'](0), $enc("#", "ASCII-8BIT"))))) {
+            return nil
+          };
+          if ($truthy((result = $$('ENCODING_RE').$match(encoding_line)))) {
+            return $$('Encoding').$find(($truthy(($ret_or_1 = ($truthy(($ret_or_2 = result['$[]'](3))) ? ($ret_or_2) : (result['$[]'](4))))) ? ($ret_or_1) : (result['$[]'](6))))
           } else {
             return nil
           };
-        }, $Buffer_recognize_encoding$1.$$arity = 1);
-        Opal.defs(self, '$reencode_string', $Buffer_reencode_string$2 = function $$reencode_string(input) {
+        }, 1);
+        $defs(self, '$reencode_string', function $$reencode_string(input) {
           var self = this, original_encoding = nil, detected_encoding = nil;
 
           
           original_encoding = input.$encoding();
-          detected_encoding = self.$recognize_encoding(input.$force_encoding($$$($$($nesting, 'Encoding'), 'BINARY')));
+          detected_encoding = self.$recognize_encoding(input.$force_encoding($$$($$('Encoding'), 'BINARY')));
           if ($truthy(detected_encoding['$nil?']())) {
             return input.$force_encoding(original_encoding)
-          } else if (detected_encoding['$==']($$$($$($nesting, 'Encoding'), 'BINARY'))) {
+          } else if ($eqeq(detected_encoding, $$$($$('Encoding'), 'BINARY'))) {
             return input
           } else {
-            return input.$force_encoding(detected_encoding).$encode($$$($$($nesting, 'Encoding'), 'UTF_8'))
+            return input.$force_encoding(detected_encoding).$encode($$$($$('Encoding'), 'UTF_8'))
           };
-        }, $Buffer_reencode_string$2.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$initialize', $Buffer_initialize$3 = function $$initialize(name, $a, $b) {
+        $def(self, '$initialize', function $$initialize(name, $a, $b) {
           var $post_args, $kwargs, first_line, source, self = this, $writer = nil;
 
           
           
-          $post_args = Opal.slice.call(arguments, 1, arguments.length);
+          $post_args = Opal.slice.call(arguments, 1);
           
           $kwargs = Opal.extract_kwargs($post_args);
           
@@ -4712,18 +3988,11 @@ Opal.modules["parser/source/buffer"] = function(Opal) {
             throw Opal.ArgumentError.$new('expected kwargs');
           };
           
-          if ($post_args.length > 0) {
-            first_line = $post_args[0];
-            $post_args.splice(0, 1);
-          }
-          if (first_line == null) {
-            first_line = 1;
-          };
+          if ($post_args.length > 0) first_line = $post_args.shift();
+          if (first_line == null) first_line = 1;;
           
           source = $kwargs.$$smap["source"];
-          if (source == null) {
-            source = nil
-          };
+          if (source == null) source = nil;
           self.name = name.$to_s();
           self.source = nil;
           self.first_line = first_line;
@@ -4734,79 +4003,71 @@ Opal.modules["parser/source/buffer"] = function(Opal) {
           if ($truthy(source)) {
             
             $writer = [source];
-            $send(self, 'source=', Opal.to_a($writer));
+            $send(self, 'source=', $to_a($writer));
             return $writer[$rb_minus($writer["length"], 1)];
           } else {
             return nil
           };
-        }, $Buffer_initialize$3.$$arity = -2);
+        }, -2);
         
-        Opal.def(self, '$read', $Buffer_read$4 = function $$read() {
-          var $$5, self = this;
+        $def(self, '$read', function $$read() {
+          var self = this;
 
           
-          $send($$($nesting, 'File'), 'open', [self.name, $enc("rb", "ASCII-8BIT")], ($$5 = function(io){var self = $$5.$$s == null ? this : $$5.$$s, $writer = nil;
+          $send($$('File'), 'open', [self.name, $enc("rb", "ASCII-8BIT")], function $$1(io){var self = $$1.$$s == null ? this : $$1.$$s, $writer = nil;
 
             
             
-            if (io == null) {
-              io = nil;
-            };
+            if (io == null) io = nil;;
             $writer = [io.$read()];
-            $send(self, 'source=', Opal.to_a($writer));
-            return $writer[$rb_minus($writer["length"], 1)];}, $$5.$$s = self, $$5.$$arity = 1, $$5));
+            $send(self, 'source=', $to_a($writer));
+            return $writer[$rb_minus($writer["length"], 1)];}, {$$arity: 1, $$s: self});
           return self;
-        }, $Buffer_read$4.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$source', $Buffer_source$6 = function $$source() {
+        $def(self, '$source', function $$source() {
           var self = this;
 
           
           if ($truthy(self.source['$nil?']())) {
-            self.$raise($$($nesting, 'RuntimeError'), $enc("Cannot extract source from uninitialized Source::Buffer", "ASCII-8BIT"))};
+            self.$raise($$('RuntimeError'), $enc("Cannot extract source from uninitialized Source::Buffer", "ASCII-8BIT"))
+          };
           return self.source;
-        }, $Buffer_source$6.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$source=', $Buffer_source$eq$7 = function(input) {
+        $def(self, '$source=', function $Buffer_source$eq$2(input) {
           var self = this, $writer = nil;
 
           
           if ($truthy(input['$frozen?']())) {
-            input = input.$dup()};
+            input = input.$dup()
+          };
           input = self.$class().$reencode_string(input);
-          if ($truthy(input['$valid_encoding?']())) {
-          } else {
-            self.$raise($$($nesting, 'EncodingError'), "" + "invalid byte sequence in " + (input.$encoding().$name()))
+          if (!$truthy(input['$valid_encoding?']())) {
+            self.$raise($$('EncodingError'), $enc("invalid byte sequence in ", "ASCII-8BIT") + (input.$encoding().$name()))
           };
           
           $writer = [input];
-          $send(self, 'raw_source=', Opal.to_a($writer));
+          $send(self, 'raw_source=', $to_a($writer));
           return $writer[$rb_minus($writer["length"], 1)];;
-        }, $Buffer_source$eq$7.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$raw_source=', $Buffer_raw_source$eq$8 = function(input) {
-          var self = this, $ret_or_4 = nil, $ret_or_5 = nil;
+        $def(self, '$raw_source=', function $Buffer_raw_source$eq$3(input) {
+          var self = this;
 
           
           if ($truthy(self.source)) {
-            self.$raise($$($nesting, 'ArgumentError'), $enc("Source::Buffer is immutable", "ASCII-8BIT"))};
+            self.$raise($$('ArgumentError'), $enc("Source::Buffer is immutable", "ASCII-8BIT"))
+          };
           self.source = input.$gsub($enc("\r\n", "ASCII-8BIT").$freeze(), $enc("\n", "ASCII-8BIT").$freeze()).$freeze();
-          if ($truthy((function() {if ($truthy(($ret_or_4 = (function() {if ($truthy(($ret_or_5 = self.source['$ascii_only?']()['$!']()))) {
-            return self.source.$encoding()['$!=']($$$($$($nesting, 'Encoding'), 'UTF_32LE'))
-          } else {
-            return $ret_or_5
-          }; return nil; })()))) {
-            return self.source.$encoding()['$!=']($$$($$($nesting, 'Encoding'), 'BINARY'))
-          } else {
-            return $ret_or_4
-          }; return nil; })())) {
-            return (self.slice_source = self.source.$encode($$$($$($nesting, 'Encoding'), 'UTF_32LE')))
+          if ((($not(self.source['$ascii_only?']()) && ($neqeq(self.source.$encoding(), $$$($$('Encoding'), 'UTF_32LE')))) && ($neqeq(self.source.$encoding(), $$$($$('Encoding'), 'BINARY'))))) {
+            return (self.slice_source = self.source.$encode($$$($$('Encoding'), 'UTF_32LE')))
           } else {
             return nil
           };
-        }, $Buffer_raw_source$eq$8.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$slice', $Buffer_slice$9 = function $$slice(range) {
+        $def(self, '$slice', function $$slice(range) {
           var self = this;
 
           if ($truthy(self.slice_source['$nil?']())) {
@@ -4814,217 +4075,162 @@ Opal.modules["parser/source/buffer"] = function(Opal) {
           } else {
             return self.slice_source['$[]'](range).$encode(self.source.$encoding())
           }
-        }, $Buffer_slice$9.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$decompose_position', $Buffer_decompose_position$10 = function $$decompose_position(position) {
+        $def(self, '$decompose_position', function $$decompose_position(position) {
           var self = this, line_index = nil, line_begin = nil;
 
           
           line_index = self.$line_index_for_position(position);
           line_begin = self.$line_begins()['$[]'](line_index);
           return [$rb_plus(self.first_line, line_index), $rb_minus(position, line_begin)];
-        }, $Buffer_decompose_position$10.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$line_for_position', $Buffer_line_for_position$11 = function $$line_for_position(position) {
+        $def(self, '$line_for_position', function $$line_for_position(position) {
           var self = this;
 
           return $rb_plus(self.$line_index_for_position(position), self.first_line)
-        }, $Buffer_line_for_position$11.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$column_for_position', $Buffer_column_for_position$12 = function $$column_for_position(position) {
+        $def(self, '$column_for_position', function $$column_for_position(position) {
           var self = this, line_index = nil;
 
           
           line_index = self.$line_index_for_position(position);
           return $rb_minus(position, self.$line_begins()['$[]'](line_index));
-        }, $Buffer_column_for_position$12.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$source_lines', $Buffer_source_lines$13 = function $$source_lines() {
-          var $$14, self = this, $ret_or_6 = nil, lines = nil;
+        $def(self, '$source_lines', function $$source_lines() {
+          var self = this, $ret_or_1 = nil, lines = nil;
 
-          return (self.lines = (function() {if ($truthy(($ret_or_6 = self.lines))) {
-            return $ret_or_6
-          } else {
+          return (self.lines = ($truthy(($ret_or_1 = self.lines)) ? ($ret_or_1) : (((lines = self.source.$lines().$to_a()), ($truthy(self.source['$end_with?']($enc("\n", "ASCII-8BIT").$freeze())) ? (lines['$<<']($enc("", "ASCII-8BIT").$dup())) : nil), $send(lines, 'each', [], function $$4(line){
             
-            lines = self.source.$lines().$to_a();
-            if ($truthy(self.source['$end_with?']($enc("\n", "ASCII-8BIT").$freeze()))) {
-              lines['$<<']($enc("", "ASCII-8BIT").$dup())};
-            $send(lines, 'each', [], ($$14 = function(line){var self = $$14.$$s == null ? this : $$14.$$s;
-
-              
-              
-              if (line == null) {
-                line = nil;
-              };
-              line['$chomp!']($enc("\n", "ASCII-8BIT").$freeze());
-              return line.$freeze();}, $$14.$$s = self, $$14.$$arity = 1, $$14));
-            return lines.$freeze();
-          }; return nil; })())
-        }, $Buffer_source_lines$13.$$arity = 0);
+            
+            if (line == null) line = nil;;
+            line['$chomp!']($enc("\n", "ASCII-8BIT").$freeze());
+            return line.$freeze();}, 1), lines.$freeze()))))
+        }, 0);
         
-        Opal.def(self, '$source_line', $Buffer_source_line$15 = function $$source_line(lineno) {
+        $def(self, '$source_line', function $$source_line(lineno) {
           var self = this;
 
           return self.$source_lines().$fetch($rb_minus(lineno, self.first_line)).$dup()
-        }, $Buffer_source_line$15.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$line_range', $Buffer_line_range$16 = function $$line_range(lineno) {
-          var self = this, index = nil, $ret_or_7 = nil;
+        $def(self, '$line_range', function $$line_range(lineno) {
+          var self = this, index = nil;
 
           
           index = $rb_minus(lineno, self.first_line);
-          if ($truthy((function() {if ($truthy(($ret_or_7 = $rb_lt(index, 0)))) {
-            return $ret_or_7
-          } else {
-            return $rb_ge($rb_plus(index, 1), self.$line_begins().$size())
-          }; return nil; })())) {
-            return self.$raise($$($nesting, 'IndexError'), "" + "Parser::Source::Buffer: range for line " + ("" + (lineno) + " requested, valid line numbers are " + (self.first_line) + "..") + ("" + ($rb_minus($rb_plus(self.first_line, self.$line_begins().$size()), 2))))
+          if (($truthy($rb_lt(index, 0)) || ($truthy($rb_ge($rb_plus(index, 1), self.$line_begins().$size()))))) {
+            return self.$raise($$('IndexError'), $enc("Parser::Source::Buffer: range for line ", "ASCII-8BIT") + ("" + (lineno) + $enc(" requested, valid line numbers are ", "ASCII-8BIT") + (self.first_line) + $enc("..", "ASCII-8BIT")) + ("" + ($rb_minus($rb_plus(self.first_line, self.$line_begins().$size()), 2))))
           } else {
-            return $$($nesting, 'Range').$new(self, self.$line_begins()['$[]'](index), $rb_minus(self.$line_begins()['$[]']($rb_plus(index, 1)), 1))
+            return $$('Range').$new(self, self.$line_begins()['$[]'](index), $rb_minus(self.$line_begins()['$[]']($rb_plus(index, 1)), 1))
           };
-        }, $Buffer_line_range$16.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$source_range', $Buffer_source_range$17 = function $$source_range() {
-          var self = this, $ret_or_8 = nil;
+        $def(self, '$source_range', function $$source_range() {
+          var self = this, $ret_or_1 = nil;
 
-          return (self.source_range = (function() {if ($truthy(($ret_or_8 = self.source_range))) {
-            return $ret_or_8
-          } else {
-            return $$($nesting, 'Range').$new(self, 0, self.$source().$size())
-          }; return nil; })())
-        }, $Buffer_source_range$17.$$arity = 0);
+          return (self.source_range = ($truthy(($ret_or_1 = self.source_range)) ? ($ret_or_1) : ($$('Range').$new(self, 0, self.$source().$size()))))
+        }, 0);
         
-        Opal.def(self, '$last_line', $Buffer_last_line$18 = function $$last_line() {
+        $def(self, '$last_line', function $$last_line() {
           var self = this;
 
           return $rb_minus($rb_plus(self.$line_begins().$size(), self.first_line), 2)
-        }, $Buffer_last_line$18.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$freeze', $Buffer_freeze$19 = function $$freeze() {
-          var $iter = $Buffer_freeze$19.$$p, $yield = $iter || nil, self = this, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        $def(self, '$freeze', function $$freeze() {
+          var $yield = $$freeze.$$p || nil, self = this;
 
-          if ($iter) $Buffer_freeze$19.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$freeze.$$p;
           
           self.$source_lines();
           self.$line_begins();
           self.$source_range();
-          return $send2(self, $find_super(self, 'freeze', $Buffer_freeze$19, false, true), 'freeze', $zuper, $iter);
-        }, $Buffer_freeze$19.$$arity = 0);
+          return $send2(self, $find_super(self, 'freeze', $$freeze, false, true), 'freeze', [], $yield);
+        }, 0);
         
-        Opal.def(self, '$inspect', $Buffer_inspect$20 = function $$inspect() {
+        $def(self, '$inspect', function $$inspect() {
           var self = this;
 
-          return "" + "#<" + (self.$class()) + " " + (self.$name()) + ">"
-        }, $Buffer_inspect$20.$$arity = 0);
+          return $enc("#<", "ASCII-8BIT") + (self.$class()) + $enc(" ", "ASCII-8BIT") + (self.$name()) + $enc(">", "ASCII-8BIT")
+        }, 0);
         self.$private();
         
-        Opal.def(self, '$line_begins', $Buffer_line_begins$21 = function $$line_begins() {
-          var $a, self = this, $ret_or_9 = nil, begins = nil, index = nil;
+        $def(self, '$line_begins', function $$line_begins() {
+          var $a, self = this, $ret_or_1 = nil, begins = nil, index = nil;
 
-          return (self.line_begins = (function() {if ($truthy(($ret_or_9 = self.line_begins))) {
-            return $ret_or_9
-          } else {
+          return (self.line_begins = ($truthy(($ret_or_1 = self.line_begins)) ? ($ret_or_1) : ((function() {
+          (begins = [0]);
+          (index = 0);
+          (function() {while ($truthy((index = self.source.$index($enc("\n", "ASCII-8BIT").$freeze(), index)))) {
             
-            begins = [0];
-            index = 0;
-            while ($truthy((index = self.source.$index($enc("\n", "ASCII-8BIT").$freeze(), index)))) {
-              
-              index = $rb_plus(index, 1);
-              begins['$<<'](index);
-            };
-            begins['$<<']($rb_plus(self.source.$size(), 1));
-            return begins;
-          }; return nil; })())
-        }, $Buffer_line_begins$21.$$arity = 0);
+            index = $rb_plus(index, 1);
+            begins['$<<'](index);
+          }; return nil; })();
+          begins['$<<']($rb_plus(self.source.$size(), 1));
+          return begins;})())))
+        }, 0);
         
-        Opal.def(self, '$line_index_for_position', $Buffer_line_index_for_position$22 = function $$line_index_for_position(position) {
-          var self = this, $ret_or_10 = nil, index = nil, $writer = nil;
+        $def(self, '$line_index_for_position', function $$line_index_for_position(position) {
+          var self = this, $ret_or_1 = nil, index = nil, $writer = nil;
 
-          if ($truthy(($ret_or_10 = self.line_index_for_position['$[]'](position)))) {
-            return $ret_or_10
+          if ($truthy(($ret_or_1 = self.line_index_for_position['$[]'](position)))) {
+            return $ret_or_1
           } else {
             
             index = $rb_minus(self.$bsearch(self.$line_begins(), position), 1);
-            if ($truthy(self.line_index_for_position['$frozen?']())) {
-            } else {
+            if (!$truthy(self.line_index_for_position['$frozen?']())) {
               
               $writer = [position, index];
-              $send(self.line_index_for_position, '[]=', Opal.to_a($writer));
+              $send(self.line_index_for_position, '[]=', $to_a($writer));
               $writer[$rb_minus($writer["length"], 1)];
             };
             return index;
           }
-        }, $Buffer_line_index_for_position$22.$$arity = 1);
-        if ($truthy($$($nesting, 'Array')['$method_defined?']("bsearch_index"))) {
-          return (Opal.def(self, '$bsearch', $Buffer_bsearch$23 = function $$bsearch(line_begins, position) {
-            var $$24, self = this, $ret_or_11 = nil;
-
-            if ($truthy(($ret_or_11 = $send(line_begins, 'bsearch_index', [], ($$24 = function(line_begin){var self = $$24.$$s == null ? this : $$24.$$s;
+        }, 1);
+        if ($truthy($$('Array')['$method_defined?']("bsearch_index"))) {
+          return $def(self, '$bsearch', function $$bsearch(line_begins, position) {
+            var $ret_or_1 = nil;
 
+            if ($truthy(($ret_or_1 = $send(line_begins, 'bsearch_index', [], function $$5(line_begin){
               
               
-              if (line_begin == null) {
-                line_begin = nil;
-              };
-              return $rb_lt(position, line_begin);}, $$24.$$s = self, $$24.$$arity = 1, $$24))))) {
-              return $ret_or_11
+              if (line_begin == null) line_begin = nil;;
+              return $rb_lt(position, line_begin);}, 1)))) {
+              return $ret_or_1
             } else {
               return $rb_minus(line_begins.$size(), 1)
             }
-          }, $Buffer_bsearch$23.$$arity = 2), nil) && 'bsearch'
+          }, 2)
         } else {
-          return (Opal.def(self, '$bsearch', $Buffer_bsearch$25 = function $$bsearch(line_begins, position) {
-            var $$26, self = this, $ret_or_12 = nil, $ret_or_13 = nil;
+          return $def(self, '$bsearch', function $$bsearch(line_begins, position) {
+            var self = this, $ret_or_1 = nil;
 
             
-            self.line_range = (function() {if ($truthy(($ret_or_12 = self.line_range))) {
-              return $ret_or_12
-            } else {
-              return Opal.Range.$new(0,line_begins.$size(), true)
-            }; return nil; })();
-            if ($truthy(($ret_or_13 = $send(self.line_range, 'bsearch', [], ($$26 = function(i){var self = $$26.$$s == null ? this : $$26.$$s;
-
+            self.line_range = ($truthy(($ret_or_1 = self.line_range)) ? ($ret_or_1) : (Opal.Range.$new(0,line_begins.$size(), true)));
+            if ($truthy(($ret_or_1 = $send(self.line_range, 'bsearch', [], function $$6(i){
               
               
-              if (i == null) {
-                i = nil;
-              };
-              return $rb_lt(position, line_begins['$[]'](i));}, $$26.$$s = self, $$26.$$arity = 1, $$26))))) {
-              return $ret_or_13
+              if (i == null) i = nil;;
+              return $rb_lt(position, line_begins['$[]'](i));}, 1)))) {
+              return $ret_or_1
             } else {
               return $rb_minus(line_begins.$size(), 1)
             };
-          }, $Buffer_bsearch$25.$$arity = 2), nil) && 'bsearch'
+          }, 2)
         };
       })($nesting[0], null, $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/range"] = function(Opal) {
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_ge(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs >= rhs : lhs['$>='](rhs);
-  }
-  function $rb_times(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs * rhs : lhs['$*'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $hash2 = Opal.hash2, $alias = Opal.alias;
-
-  Opal.add_stubs(['$include', '$attr_reader', '$<', '$raise', '$nil?', '$freeze', '$with', '$-', '$line_for_position', '$alias_method', '$column_for_position', '$!=', '$line', '$last_line', '$inspect', '$column', '$last_column', '$source_line', '$slice', '$begin_pos', '$end_pos', '$include?', '$source', '$to_a', '$decompose_position', '$join', '$name', '$+', '$new', '$min', '$max', '$disjoint?', '$empty?', '$>=', '$!', '$<=>', '$contains?', '$overlaps?', '$==', '$*', '$is_a?', '$source_buffer', '$nonzero?', '$hash']);
+Opal.modules["parser/source/range"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $rb_lt = Opal.rb_lt, $def = Opal.def, $hash2 = Opal.hash2, $rb_minus = Opal.rb_minus, $alias = Opal.alias, $neqeq = Opal.neqeq, $to_ary = Opal.to_ary, $rb_plus = Opal.rb_plus, $rb_ge = Opal.rb_ge, $rb_times = Opal.rb_times, $eqeq = Opal.eqeq;
+
+  Opal.add_stubs('include,attr_reader,<,raise,nil?,freeze,with,-,line_for_position,alias_method,column_for_position,!=,line,last_line,inspect,column,last_column,source_line,slice,begin_pos,end_pos,include?,source,to_a,decompose_position,join,name,+,new,min,max,disjoint?,empty?,>=,!,<=>,contains?,overlaps?,==,*,source_buffer,is_a?,nonzero?,hash');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -5038,124 +4244,127 @@ Opal.modules["parser/source/range"] = function(Opal) {
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'Range');
 
-        var $nesting = [self].concat($parent_nesting), $Range_initialize$1, $Range_begin$2, $Range_end$3, $Range_size$4, $Range_line$5, $Range_column$6, $Range_last_line$7, $Range_last_column$8, $Range_column_range$9, $Range_source_line$10, $Range_source$11, $Range_is$ques$12, $Range_to_a$13, $Range_to_range$14, $Range_to_s$15, $Range_with$16, $Range_adjust$17, $Range_resize$18, $Range_join$19, $Range_intersect$20, $Range_disjoint$ques$21, $Range_overlaps$ques$22, $Range_contains$ques$23, $Range_contained$ques$24, $Range_crossing$ques$25, $Range_empty$ques$26, $Range_$lt_eq_gt$27, $Range_hash$28, $Range_inspect$29;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.begin_pos = self.$$prototype.end_pos = self.$$prototype.source_buffer = nil;
+        $proto.begin_pos = $proto.end_pos = $proto.source_buffer = nil;
         
-        self.$include($$($nesting, 'Comparable'));
+        self.$include($$('Comparable'));
         self.$attr_reader("source_buffer");
         self.$attr_reader("begin_pos", "end_pos");
         
-        Opal.def(self, '$initialize', $Range_initialize$1 = function $$initialize(source_buffer, begin_pos, end_pos) {
+        $def(self, '$initialize', function $$initialize(source_buffer, begin_pos, end_pos) {
           var $a, self = this;
 
           
           if ($truthy($rb_lt(end_pos, begin_pos))) {
-            self.$raise($$($nesting, 'ArgumentError'), "Parser::Source::Range: end_pos must not be less than begin_pos")};
+            self.$raise($$('ArgumentError'), "Parser::Source::Range: end_pos must not be less than begin_pos")
+          };
           if ($truthy(source_buffer['$nil?']())) {
-            self.$raise($$($nesting, 'ArgumentError'), "Parser::Source::Range: source_buffer must not be nil")};
+            self.$raise($$('ArgumentError'), "Parser::Source::Range: source_buffer must not be nil")
+          };
           self.source_buffer = source_buffer;
           $a = [begin_pos, end_pos], (self.begin_pos = $a[0]), (self.end_pos = $a[1]), $a;
           return self.$freeze();
-        }, $Range_initialize$1.$$arity = 3);
+        }, 3);
         
-        Opal.def(self, '$begin', $Range_begin$2 = function $$begin() {
+        $def(self, '$begin', function $$begin() {
           var self = this;
 
           return self.$with($hash2(["end_pos"], {"end_pos": self.begin_pos}))
-        }, $Range_begin$2.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$end', $Range_end$3 = function $$end() {
+        $def(self, '$end', function $$end() {
           var self = this;
 
           return self.$with($hash2(["begin_pos"], {"begin_pos": self.end_pos}))
-        }, $Range_end$3.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$size', $Range_size$4 = function $$size() {
+        $def(self, '$size', function $$size() {
           var self = this;
 
           return $rb_minus(self.end_pos, self.begin_pos)
-        }, $Range_size$4.$$arity = 0);
+        }, 0);
         $alias(self, "length", "size");
         
-        Opal.def(self, '$line', $Range_line$5 = function $$line() {
+        $def(self, '$line', function $$line() {
           var self = this;
 
           return self.source_buffer.$line_for_position(self.begin_pos)
-        }, $Range_line$5.$$arity = 0);
+        }, 0);
         self.$alias_method("first_line", "line");
         
-        Opal.def(self, '$column', $Range_column$6 = function $$column() {
+        $def(self, '$column', function $$column() {
           var self = this;
 
           return self.source_buffer.$column_for_position(self.begin_pos)
-        }, $Range_column$6.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$last_line', $Range_last_line$7 = function $$last_line() {
+        $def(self, '$last_line', function $$last_line() {
           var self = this;
 
           return self.source_buffer.$line_for_position(self.end_pos)
-        }, $Range_last_line$7.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$last_column', $Range_last_column$8 = function $$last_column() {
+        $def(self, '$last_column', function $$last_column() {
           var self = this;
 
           return self.source_buffer.$column_for_position(self.end_pos)
-        }, $Range_last_column$8.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$column_range', $Range_column_range$9 = function $$column_range() {
+        $def(self, '$column_range', function $$column_range() {
           var self = this;
 
           
-          if ($truthy(self.$line()['$!='](self.$last_line()))) {
-            self.$raise($$($nesting, 'RangeError'), "" + (self.$inspect()) + " spans more than one line")};
+          if ($neqeq(self.$line(), self.$last_line())) {
+            self.$raise($$('RangeError'), "" + (self.$inspect()) + " spans more than one line")
+          };
           return Opal.Range.$new(self.$column(),self.$last_column(), true);
-        }, $Range_column_range$9.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$source_line', $Range_source_line$10 = function $$source_line() {
+        $def(self, '$source_line', function $$source_line() {
           var self = this;
 
           return self.source_buffer.$source_line(self.$line())
-        }, $Range_source_line$10.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$source', $Range_source$11 = function $$source() {
+        $def(self, '$source', function $$source() {
           var self = this;
 
           return self.source_buffer.$slice(Opal.Range.$new(self.$begin_pos(),self.$end_pos(), true))
-        }, $Range_source$11.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$is?', $Range_is$ques$12 = function($a) {
+        $def(self, '$is?', function $Range_is$ques$1($a) {
           var $post_args, what, self = this;
 
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
           what = $post_args;;
           return what['$include?'](self.$source());
-        }, $Range_is$ques$12.$$arity = -1);
+        }, -1);
         
-        Opal.def(self, '$to_a', $Range_to_a$13 = function $$to_a() {
+        $def(self, '$to_a', function $$to_a() {
           var self = this;
 
           return Opal.Range.$new(self.begin_pos,self.end_pos, true).$to_a()
-        }, $Range_to_a$13.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$to_range', $Range_to_range$14 = function $$to_range() {
+        $def(self, '$to_range', function $$to_range() {
           var self = this;
 
           return Opal.Range.$new(self.$begin_pos(),self.$end_pos(), true)
-        }, $Range_to_range$14.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$to_s', $Range_to_s$15 = function $$to_s() {
+        $def(self, '$to_s', function $$to_s() {
           var $a, $b, self = this, line = nil, column = nil;
 
           
-          $b = self.source_buffer.$decompose_position(self.begin_pos), $a = Opal.to_ary($b), (line = ($a[0] == null ? nil : $a[0])), (column = ($a[1] == null ? nil : $a[1])), $b;
+          $b = self.source_buffer.$decompose_position(self.begin_pos), $a = $to_ary($b), (line = ($a[0] == null ? nil : $a[0])), (column = ($a[1] == null ? nil : $a[1])), $b;
           return [self.source_buffer.$name(), line, $rb_plus(column, 1)].$join(":");
-        }, $Range_to_s$15.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$with', $Range_with$16 = function($kwargs) {
+        $def(self, '$with', function $Range_with$2($kwargs) {
           var begin_pos, end_pos, self = this;
 
           
@@ -5167,18 +4376,14 @@ Opal.modules["parser/source/range"] = function(Opal) {
           };
           
           begin_pos = $kwargs.$$smap["begin_pos"];
-          if (begin_pos == null) {
-            begin_pos = self.begin_pos
-          };
+          if (begin_pos == null) begin_pos = self.begin_pos;
           
           end_pos = $kwargs.$$smap["end_pos"];
-          if (end_pos == null) {
-            end_pos = self.end_pos
-          };
-          return $$($nesting, 'Range').$new(self.source_buffer, begin_pos, end_pos);
-        }, $Range_with$16.$$arity = -1);
+          if (end_pos == null) end_pos = self.end_pos;
+          return $$('Range').$new(self.source_buffer, begin_pos, end_pos);
+        }, -1);
         
-        Opal.def(self, '$adjust', $Range_adjust$17 = function $$adjust($kwargs) {
+        $def(self, '$adjust', function $$adjust($kwargs) {
           var begin_pos, end_pos, self = this;
 
           
@@ -5190,135 +4395,116 @@ Opal.modules["parser/source/range"] = function(Opal) {
           };
           
           begin_pos = $kwargs.$$smap["begin_pos"];
-          if (begin_pos == null) {
-            begin_pos = 0
-          };
+          if (begin_pos == null) begin_pos = 0;
           
           end_pos = $kwargs.$$smap["end_pos"];
-          if (end_pos == null) {
-            end_pos = 0
-          };
-          return $$($nesting, 'Range').$new(self.source_buffer, $rb_plus(self.begin_pos, begin_pos), $rb_plus(self.end_pos, end_pos));
-        }, $Range_adjust$17.$$arity = -1);
+          if (end_pos == null) end_pos = 0;
+          return $$('Range').$new(self.source_buffer, $rb_plus(self.begin_pos, begin_pos), $rb_plus(self.end_pos, end_pos));
+        }, -1);
         
-        Opal.def(self, '$resize', $Range_resize$18 = function $$resize(new_size) {
+        $def(self, '$resize', function $$resize(new_size) {
           var self = this;
 
           return self.$with($hash2(["end_pos"], {"end_pos": $rb_plus(self.begin_pos, new_size)}))
-        }, $Range_resize$18.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$join', $Range_join$19 = function $$join(other) {
+        $def(self, '$join', function $$join(other) {
           var self = this;
 
-          return $$($nesting, 'Range').$new(self.source_buffer, [self.begin_pos, other.$begin_pos()].$min(), [self.end_pos, other.$end_pos()].$max())
-        }, $Range_join$19.$$arity = 1);
+          return $$('Range').$new(self.source_buffer, [self.begin_pos, other.$begin_pos()].$min(), [self.end_pos, other.$end_pos()].$max())
+        }, 1);
         
-        Opal.def(self, '$intersect', $Range_intersect$20 = function $$intersect(other) {
+        $def(self, '$intersect', function $$intersect(other) {
           var self = this;
 
           if ($truthy(self['$disjoint?'](other))) {
             return nil
           } else {
-            return $$($nesting, 'Range').$new(self.source_buffer, [self.begin_pos, other.$begin_pos()].$max(), [self.end_pos, other.$end_pos()].$min())
+            return $$('Range').$new(self.source_buffer, [self.begin_pos, other.$begin_pos()].$max(), [self.end_pos, other.$end_pos()].$min())
           }
-        }, $Range_intersect$20.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$disjoint?', $Range_disjoint$ques$21 = function(other) {
-          var self = this, $ret_or_1 = nil, $ret_or_2 = nil;
+        $def(self, '$disjoint?', function $Range_disjoint$ques$3(other) {
+          var self = this, $ret_or_1 = nil;
 
-          if ($truthy((function() {if ($truthy(($ret_or_1 = self['$empty?']()))) {
-            return other['$empty?']()
-          } else {
-            return $ret_or_1
-          }; return nil; })())) {
+          if (($truthy(self['$empty?']()) && ($truthy(other['$empty?']())))) {
             return self.begin_pos['$!='](other.$begin_pos())
-          } else if ($truthy(($ret_or_2 = $rb_ge(self.begin_pos, other.$end_pos())))) {
-            return $ret_or_2
+          } else if ($truthy(($ret_or_1 = $rb_ge(self.begin_pos, other.$end_pos())))) {
+            return $ret_or_1
           } else {
             return $rb_ge(other.$begin_pos(), self.end_pos)
           }
-        }, $Range_disjoint$ques$21.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$overlaps?', $Range_overlaps$ques$22 = function(other) {
+        $def(self, '$overlaps?', function $Range_overlaps$ques$4(other) {
           var self = this;
 
           return self['$disjoint?'](other)['$!']()
-        }, $Range_overlaps$ques$22.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$contains?', $Range_contains$ques$23 = function(other) {
+        $def(self, '$contains?', function $Range_contains$ques$5(other) {
           var self = this;
 
-          return $rb_ge($rb_plus(other.$begin_pos()['$<=>'](self.begin_pos), self.end_pos['$<=>'](other.$end_pos())), (function() {if ($truthy(other['$empty?']())) {
-            return 2
-          } else {
-            return 1
-          }; return nil; })())
-        }, $Range_contains$ques$23.$$arity = 1);
+          return $rb_ge($rb_plus(other.$begin_pos()['$<=>'](self.begin_pos), self.end_pos['$<=>'](other.$end_pos())), ($truthy(other['$empty?']()) ? (2) : (1)))
+        }, 1);
         
-        Opal.def(self, '$contained?', $Range_contained$ques$24 = function(other) {
+        $def(self, '$contained?', function $Range_contained$ques$6(other) {
           var self = this;
 
           return other['$contains?'](self)
-        }, $Range_contained$ques$24.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$crossing?', $Range_crossing$ques$25 = function(other) {
+        $def(self, '$crossing?', function $Range_crossing$ques$7(other) {
           var self = this;
 
           
-          if ($truthy(self['$overlaps?'](other))) {
-          } else {
+          if (!$truthy(self['$overlaps?'](other))) {
             return false
           };
           return $rb_times(self.begin_pos['$<=>'](other.$begin_pos()), self.end_pos['$<=>'](other.$end_pos()))['$=='](1);
-        }, $Range_crossing$ques$25.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$empty?', $Range_empty$ques$26 = function() {
+        $def(self, '$empty?', function $Range_empty$ques$8() {
           var self = this;
 
           return self.begin_pos['$=='](self.end_pos)
-        }, $Range_empty$ques$26.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$<=>', $Range_$lt_eq_gt$27 = function(other) {
-          var self = this, $ret_or_3 = nil, $ret_or_4 = nil;
+        $def(self, '$<=>', function $Range_$lt_eq_gt$9(other) {
+          var self = this, $ret_or_1 = nil;
 
           
-          if ($truthy((function() {if ($truthy(($ret_or_3 = other['$is_a?']($$$($$$($$$('::', 'Parser'), 'Source'), 'Range'))))) {
-            return self.source_buffer['$=='](other.$source_buffer())
-          } else {
-            return $ret_or_3
-          }; return nil; })())) {
-          } else {
+          if (!($truthy(other['$is_a?']($$$($$$($$$('Parser'), 'Source'), 'Range'))) && ($eqeq(self.source_buffer, other.$source_buffer())))) {
             return nil
           };
-          if ($truthy(($ret_or_4 = self.begin_pos['$<=>'](other.$begin_pos())['$nonzero?']()))) {
-            return $ret_or_4
+          if ($truthy(($ret_or_1 = self.begin_pos['$<=>'](other.$begin_pos())['$nonzero?']()))) {
+            return $ret_or_1
           } else {
             
             return self.end_pos['$<=>'](other.$end_pos());
           };
-        }, $Range_$lt_eq_gt$27.$$arity = 1);
+        }, 1);
         self.$alias_method("eql?", "==");
         
-        Opal.def(self, '$hash', $Range_hash$28 = function $$hash() {
+        $def(self, '$hash', function $$hash() {
           var self = this;
 
           return [self.source_buffer, self.begin_pos, self.end_pos].$hash()
-        }, $Range_hash$28.$$arity = 0);
-        return (Opal.def(self, '$inspect', $Range_inspect$29 = function $$inspect() {
+        }, 0);
+        return $def(self, '$inspect', function $$inspect() {
           var self = this;
 
-          return "" + "#<Parser::Source::Range " + (self.source_buffer.$name()) + " " + (self.begin_pos) + "..." + (self.end_pos) + ">"
-        }, $Range_inspect$29.$$arity = 0), nil) && 'inspect';
+          return "#<Parser::Source::Range " + (self.source_buffer.$name()) + " " + (self.begin_pos) + "..." + (self.end_pos) + ">"
+        }, 0);
       })($nesting[0], null, $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/comment"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy;
+Opal.modules["parser/source/comment"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $defs = Opal.defs, $def = Opal.def, $truthy = Opal.truthy;
 
-  Opal.add_stubs(['$attr_reader', '$alias_method', '$new', '$associate', '$associate_locations', '$associate_by_identity', '$freeze', '$source', '$start_with?', '$text', '$==', '$type', '$is_a?', '$location', '$to_s', '$expression', '$inspect']);
+  Opal.add_stubs('attr_reader,alias_method,new,associate,associate_locations,associate_by_identity,freeze,source,start_with?,text,==,type,is_a?,location,to_s,expression,inspect');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -5332,45 +4518,45 @@ Opal.modules["parser/source/comment"] = function(Opal) {
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'Comment');
 
-        var $nesting = [self].concat($parent_nesting), $Comment_associate$1, $Comment_associate_locations$2, $Comment_associate_by_identity$3, $Comment_initialize$4, $Comment_type$5, $Comment_inline$ques$6, $Comment_document$ques$7, $Comment_$eq_eq$8, $Comment_inspect$9;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.location = nil;
+        $proto.location = nil;
         
         self.$attr_reader("text");
         self.$attr_reader("location");
         self.$alias_method("loc", "location");
-        Opal.defs(self, '$associate', $Comment_associate$1 = function $$associate(ast, comments) {
-          var self = this, associator = nil;
+        $defs(self, '$associate', function $$associate(ast, comments) {
+          var associator = nil;
 
           
-          associator = $$($nesting, 'Associator').$new(ast, comments);
+          associator = $$('Associator').$new(ast, comments);
           return associator.$associate();
-        }, $Comment_associate$1.$$arity = 2);
-        Opal.defs(self, '$associate_locations', $Comment_associate_locations$2 = function $$associate_locations(ast, comments) {
-          var self = this, associator = nil;
+        }, 2);
+        $defs(self, '$associate_locations', function $$associate_locations(ast, comments) {
+          var associator = nil;
 
           
-          associator = $$($nesting, 'Associator').$new(ast, comments);
+          associator = $$('Associator').$new(ast, comments);
           return associator.$associate_locations();
-        }, $Comment_associate_locations$2.$$arity = 2);
-        Opal.defs(self, '$associate_by_identity', $Comment_associate_by_identity$3 = function $$associate_by_identity(ast, comments) {
-          var self = this, associator = nil;
+        }, 2);
+        $defs(self, '$associate_by_identity', function $$associate_by_identity(ast, comments) {
+          var associator = nil;
 
           
-          associator = $$($nesting, 'Associator').$new(ast, comments);
+          associator = $$('Associator').$new(ast, comments);
           return associator.$associate_by_identity();
-        }, $Comment_associate_by_identity$3.$$arity = 2);
+        }, 2);
         
-        Opal.def(self, '$initialize', $Comment_initialize$4 = function $$initialize(range) {
+        $def(self, '$initialize', function $$initialize(range) {
           var self = this;
 
           
-          self.location = $$$($$$($$($nesting, 'Parser'), 'Source'), 'Map').$new(range);
+          self.location = $$$($$$($$('Parser'), 'Source'), 'Map').$new(range);
           self.text = range.$source().$freeze();
           return self.$freeze();
-        }, $Comment_initialize$4.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$type', $Comment_type$5 = function $$type() {
+        $def(self, '$type', function $$type() {
           var self = this;
 
           if ($truthy(self.$text()['$start_with?']("#".$freeze()))) {
@@ -5380,53 +4566,43 @@ Opal.modules["parser/source/comment"] = function(Opal) {
           } else {
             return nil
           }
-        }, $Comment_type$5.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$inline?', $Comment_inline$ques$6 = function() {
+        $def(self, '$inline?', function $Comment_inline$ques$1() {
           var self = this;
 
           return self.$type()['$==']("inline")
-        }, $Comment_inline$ques$6.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$document?', $Comment_document$ques$7 = function() {
+        $def(self, '$document?', function $Comment_document$ques$2() {
           var self = this;
 
           return self.$type()['$==']("document")
-        }, $Comment_document$ques$7.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$==', $Comment_$eq_eq$8 = function(other) {
+        $def(self, '$==', function $Comment_$eq_eq$3(other) {
           var self = this, $ret_or_1 = nil;
 
-          if ($truthy(($ret_or_1 = other['$is_a?']($$$($$($nesting, 'Source'), 'Comment'))))) {
+          if ($truthy(($ret_or_1 = other['$is_a?']($$$($$('Source'), 'Comment'))))) {
             return self.location['$=='](other.$location())
           } else {
             return $ret_or_1
           }
-        }, $Comment_$eq_eq$8.$$arity = 1);
-        return (Opal.def(self, '$inspect', $Comment_inspect$9 = function $$inspect() {
+        }, 1);
+        return $def(self, '$inspect', function $$inspect() {
           var self = this;
 
-          return "" + "#<Parser::Source::Comment " + (self.location.$expression().$to_s()) + " " + (self.$text().$inspect()) + ">"
-        }, $Comment_inspect$9.$$arity = 0), nil) && 'inspect';
+          return "#<Parser::Source::Comment " + (self.location.$expression().$to_s()) + " " + (self.$text().$inspect()) + ">"
+        }, 0);
       })($nesting[0], null, $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/comment/associator"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_le(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs <= rhs : lhs['$<='](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send;
-
-  Opal.add_stubs(['$attr_accessor', '$do_associate', '$private', '$freeze', '$[]', '$include?', '$type', '$sort_by', '$compact', '$children', '$begin_pos', '$expression', '$loc', '$select', '$is_a?', '$new', '$[]=', '$-', '$==', '$compare_by_identity', '$advance_comment', '$advance_through_directives', '$visit', '$process_leading_comments', '$location', '$<=', '$line', '$last_line', '$each', '$children_in_source_order', '$process_trailing_comments', '$current_comment_before?', '$associate_and_advance_comment', '$current_comment_before_end?', '$current_comment_decorates?', '$+', '$!', '$end_pos', '$<<', '$start_with?', '$text', '$=~']);
+Opal.modules["parser/source/comment/associator"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $def = Opal.def, $const_set = Opal.const_set, $truthy = Opal.truthy, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $eqeq = Opal.eqeq, $rb_le = Opal.rb_le, $rb_plus = Opal.rb_plus, $not = Opal.not;
+
+  Opal.add_stubs('attr_accessor,do_associate,private,freeze,[],include?,type,sort_by,compact,children,begin_pos,expression,loc,select,is_a?,new,[]=,-,==,compare_by_identity,advance_comment,advance_through_directives,visit,process_leading_comments,location,<=,line,last_line,each,children_in_source_order,process_trailing_comments,current_comment_before?,associate_and_advance_comment,current_comment_before_end?,current_comment_decorates?,+,!,end_pos,<<,start_with?,text,=~');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -5435,155 +4611,138 @@ Opal.modules["parser/source/comment/associator"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Source');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'Associator');
 
-        var $nesting = [self].concat($parent_nesting), $Associator_initialize$1, $Associator_associate$2, $Associator_associate_locations$3, $Associator_associate_by_identity$4, $Associator_children_in_source_order$5, $Associator_do_associate$8, $Associator_visit$10, $Associator_process_leading_comments$12, $Associator_process_trailing_comments$13, $Associator_advance_comment$14, $Associator_current_comment_before$ques$15, $Associator_current_comment_before_end$ques$16, $Associator_current_comment_decorates$ques$17, $Associator_associate_and_advance_comment$18, $Associator_advance_through_directives$19;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.map_using = self.$$prototype.mapping = self.$$prototype.skip_directives = self.$$prototype.ast = self.$$prototype.current_comment = self.$$prototype.comment_num = self.$$prototype.comments = nil;
+        $proto.map_using = $proto.mapping = $proto.skip_directives = $proto.ast = $proto.current_comment = $proto.comment_num = $proto.comments = nil;
         
         self.$attr_accessor("skip_directives");
         
-        Opal.def(self, '$initialize', $Associator_initialize$1 = function $$initialize(ast, comments) {
+        $def(self, '$initialize', function $$initialize(ast, comments) {
           var self = this;
 
           
           self.ast = ast;
           self.comments = comments;
           return (self.skip_directives = true);
-        }, $Associator_initialize$1.$$arity = 2);
+        }, 2);
         
-        Opal.def(self, '$associate', $Associator_associate$2 = function $$associate() {
+        $def(self, '$associate', function $$associate() {
           var self = this;
 
           
           self.map_using = "eql";
           return self.$do_associate();
-        }, $Associator_associate$2.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$associate_locations', $Associator_associate_locations$3 = function $$associate_locations() {
+        $def(self, '$associate_locations', function $$associate_locations() {
           var self = this;
 
           
           self.map_using = "location";
           return self.$do_associate();
-        }, $Associator_associate_locations$3.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$associate_by_identity', $Associator_associate_by_identity$4 = function $$associate_by_identity() {
+        $def(self, '$associate_by_identity', function $$associate_by_identity() {
           var self = this;
 
           
           self.map_using = "identity";
           return self.$do_associate();
-        }, $Associator_associate_by_identity$4.$$arity = 0);
+        }, 0);
         self.$private();
-        Opal.const_set($nesting[0], 'POSTFIX_TYPES', $$($nesting, 'Set')['$[]']("if", "while", "while_post", "until", "until_post", "masgn").$freeze());
+        $const_set($nesting[0], 'POSTFIX_TYPES', $$('Set')['$[]']("if", "while", "while_post", "until", "until_post", "masgn").$freeze());
         
-        Opal.def(self, '$children_in_source_order', $Associator_children_in_source_order$5 = function $$children_in_source_order(node) {
-          var $$6, $$7, self = this;
-
-          if ($truthy($$($nesting, 'POSTFIX_TYPES')['$include?'](node.$type()))) {
-            return $send(node.$children().$compact(), 'sort_by', [], ($$6 = function(child){var self = $$6.$$s == null ? this : $$6.$$s;
-
+        $def(self, '$children_in_source_order', function $$children_in_source_order(node) {
+          
+          if ($truthy($$('POSTFIX_TYPES')['$include?'](node.$type()))) {
+            return $send(node.$children().$compact(), 'sort_by', [], function $$1(child){
               
               
-              if (child == null) {
-                child = nil;
-              };
-              return child.$loc().$expression().$begin_pos();}, $$6.$$s = self, $$6.$$arity = 1, $$6))
+              if (child == null) child = nil;;
+              return child.$loc().$expression().$begin_pos();}, 1)
           } else {
-            return $send(node.$children(), 'select', [], ($$7 = function(child){var self = $$7.$$s == null ? this : $$7.$$s, $ret_or_1 = nil, $ret_or_2 = nil;
+            return $send(node.$children(), 'select', [], function $$2(child){var $ret_or_1 = nil, $ret_or_2 = nil;
 
               
               
-              if (child == null) {
-                child = nil;
-              };
-              if ($truthy(($ret_or_1 = (function() {if ($truthy(($ret_or_2 = child['$is_a?']($$$($$($nesting, 'AST'), 'Node'))))) {
-                return child.$loc()
-              } else {
-                return $ret_or_2
-              }; return nil; })()))) {
+              if (child == null) child = nil;;
+              if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = child['$is_a?']($$$($$('AST'), 'Node')))) ? (child.$loc()) : ($ret_or_2))))) {
                 return child.$loc().$expression()
               } else {
                 return $ret_or_1
-              };}, $$7.$$s = self, $$7.$$arity = 1, $$7))
+              };}, 1)
           }
-        }, $Associator_children_in_source_order$5.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$do_associate', $Associator_do_associate$8 = function $$do_associate() {
-          var $$9, self = this;
+        $def(self, '$do_associate', function $$do_associate() {
+          var self = this;
 
           
-          self.mapping = $send($$($nesting, 'Hash'), 'new', [], ($$9 = function(h, k){var self = $$9.$$s == null ? this : $$9.$$s, $writer = nil;
+          self.mapping = $send($$('Hash'), 'new', [], function $$3(h, k){var $writer = nil;
 
             
             
-            if (h == null) {
-              h = nil;
-            };
+            if (h == null) h = nil;;
             
-            if (k == null) {
-              k = nil;
-            };
+            if (k == null) k = nil;;
             $writer = [k, []];
-            $send(h, '[]=', Opal.to_a($writer));
-            return $writer[$rb_minus($writer["length"], 1)];}, $$9.$$s = self, $$9.$$arity = 2, $$9));
-          if (self.map_using['$==']("identity")) {
-            self.mapping.$compare_by_identity()};
+            $send(h, '[]=', $to_a($writer));
+            return $writer[$rb_minus($writer["length"], 1)];}, 2);
+          if ($eqeq(self.map_using, "identity")) {
+            self.mapping.$compare_by_identity()
+          };
           self.comment_num = -1;
           self.$advance_comment();
           if ($truthy(self.skip_directives)) {
-            self.$advance_through_directives()};
+            self.$advance_through_directives()
+          };
           if ($truthy(self.ast)) {
-            self.$visit(self.ast)};
+            self.$visit(self.ast)
+          };
           return self.mapping;
-        }, $Associator_do_associate$8.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$visit', $Associator_visit$10 = function $$visit(node) {
-          var $$11, self = this, node_loc = nil, $ret_or_3 = nil;
+        $def(self, '$visit', function $$visit(node) {
+          var self = this, node_loc = nil;
 
           
           self.$process_leading_comments(node);
-          if ($truthy(self.current_comment)) {
-          } else {
+          if (!$truthy(self.current_comment)) {
             return nil
           };
           node_loc = node.$location();
-          if ($truthy((function() {if ($truthy(($ret_or_3 = $rb_le(self.current_comment.$location().$line(), node_loc.$last_line())))) {
-            return $ret_or_3
-          } else {
-            return node_loc['$is_a?']($$$($$($nesting, 'Map'), 'Heredoc'))
-          }; return nil; })())) {
+          if (($truthy($rb_le(self.current_comment.$location().$line(), node_loc.$last_line())) || ($truthy(node_loc['$is_a?']($$$($$('Map'), 'Heredoc')))))) {
             
-            $send(self.$children_in_source_order(node), 'each', [], ($$11 = function(child){var self = $$11.$$s == null ? this : $$11.$$s;
+            $send(self.$children_in_source_order(node), 'each', [], function $$4(child){var self = $$4.$$s == null ? this : $$4.$$s;
 
               
               
-              if (child == null) {
-                child = nil;
-              };
-              return self.$visit(child);}, $$11.$$s = self, $$11.$$arity = 1, $$11));
+              if (child == null) child = nil;;
+              return self.$visit(child);}, {$$arity: 1, $$s: self});
             return self.$process_trailing_comments(node);
           } else {
             return nil
           };
-        }, $Associator_visit$10.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$process_leading_comments', $Associator_process_leading_comments$12 = function $$process_leading_comments(node) {
+        $def(self, '$process_leading_comments', function $$process_leading_comments(node) {
           var $a, self = this;
 
           
-          if (node.$type()['$==']("begin")) {
-            return nil};
+          if ($eqeq(node.$type(), "begin")) {
+            return nil
+          };
           while ($truthy(self['$current_comment_before?'](node))) {
             self.$associate_and_advance_comment(node)
           };
-        }, $Associator_process_leading_comments$12.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$process_trailing_comments', $Associator_process_trailing_comments$13 = function $$process_trailing_comments(node) {
+        $def(self, '$process_trailing_comments', function $$process_trailing_comments(node) {
           var $a, self = this;
 
           
@@ -5593,111 +4752,84 @@ Opal.modules["parser/source/comment/associator"] = function(Opal) {
           while ($truthy(self['$current_comment_decorates?'](node))) {
             self.$associate_and_advance_comment(node)
           };
-        }, $Associator_process_trailing_comments$13.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$advance_comment', $Associator_advance_comment$14 = function $$advance_comment() {
+        $def(self, '$advance_comment', function $$advance_comment() {
           var self = this;
 
           
           self.comment_num = $rb_plus(self.comment_num, 1);
           return (self.current_comment = self.comments['$[]'](self.comment_num));
-        }, $Associator_advance_comment$14.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$current_comment_before?', $Associator_current_comment_before$ques$15 = function(node) {
+        $def(self, '$current_comment_before?', function $Associator_current_comment_before$ques$5(node) {
           var self = this, comment_loc = nil, node_loc = nil;
 
           
-          if ($truthy(self.current_comment['$!']())) {
-            return false};
+          if ($not(self.current_comment)) {
+            return false
+          };
           comment_loc = self.current_comment.$location().$expression();
           node_loc = node.$location().$expression();
           return $rb_le(comment_loc.$end_pos(), node_loc.$begin_pos());
-        }, $Associator_current_comment_before$ques$15.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$current_comment_before_end?', $Associator_current_comment_before_end$ques$16 = function(node) {
+        $def(self, '$current_comment_before_end?', function $Associator_current_comment_before_end$ques$6(node) {
           var self = this, comment_loc = nil, node_loc = nil;
 
           
-          if ($truthy(self.current_comment['$!']())) {
-            return false};
+          if ($not(self.current_comment)) {
+            return false
+          };
           comment_loc = self.current_comment.$location().$expression();
           node_loc = node.$location().$expression();
           return $rb_le(comment_loc.$end_pos(), node_loc.$end_pos());
-        }, $Associator_current_comment_before_end$ques$16.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$current_comment_decorates?', $Associator_current_comment_decorates$ques$17 = function(node) {
+        $def(self, '$current_comment_decorates?', function $Associator_current_comment_decorates$ques$7(node) {
           var self = this;
 
           
-          if ($truthy(self.current_comment['$!']())) {
-            return false};
+          if ($not(self.current_comment)) {
+            return false
+          };
           return self.current_comment.$location().$line()['$=='](node.$location().$last_line());
-        }, $Associator_current_comment_decorates$ques$17.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$associate_and_advance_comment', $Associator_associate_and_advance_comment$18 = function $$associate_and_advance_comment(node) {
+        $def(self, '$associate_and_advance_comment', function $$associate_and_advance_comment(node) {
           var self = this, key = nil;
 
           
-          key = (function() {if (self.map_using['$==']("location")) {
-            return node.$location()
-          } else {
-            return node
-          }; return nil; })();
+          key = ($eqeq(self.map_using, "location") ? (node.$location()) : (node));
           self.mapping['$[]'](key)['$<<'](self.current_comment);
           return self.$advance_comment();
-        }, $Associator_associate_and_advance_comment$18.$$arity = 1);
-        Opal.const_set($nesting[0], 'MAGIC_COMMENT_RE', /^#\s*(-\*-|)\s*(frozen_string_literal|warn_indent|warn_past_scope):.*\1$/);
-        return (Opal.def(self, '$advance_through_directives', $Associator_advance_through_directives$19 = function $$advance_through_directives() {
-          var self = this, $ret_or_4 = nil, $ret_or_5 = nil, $ret_or_6 = nil;
+        }, 1);
+        $const_set($nesting[0], 'MAGIC_COMMENT_RE', /^#\s*(-\*-|)\s*(frozen_string_literal|warn_indent|warn_past_scope):.*\1$/);
+        return $def(self, '$advance_through_directives', function $$advance_through_directives() {
+          var self = this;
 
           
-          if ($truthy((function() {if ($truthy(($ret_or_4 = self.current_comment))) {
-            return self.current_comment.$text()['$start_with?']("#!".$freeze())
-          } else {
-            return $ret_or_4
-          }; return nil; })())) {
-            self.$advance_comment()};
-          if ($truthy((function() {if ($truthy(($ret_or_5 = self.current_comment))) {
-            return self.current_comment.$text()['$=~']($$($nesting, 'MAGIC_COMMENT_RE'))
-          } else {
-            return $ret_or_5
-          }; return nil; })())) {
-            self.$advance_comment()};
-          if ($truthy((function() {if ($truthy(($ret_or_6 = self.current_comment))) {
-            return self.current_comment.$text()['$=~']($$$($$($nesting, 'Buffer'), 'ENCODING_RE'))
-          } else {
-            return $ret_or_6
-          }; return nil; })())) {
+          if (($truthy(self.current_comment) && ($truthy(self.current_comment.$text()['$start_with?']("#!".$freeze()))))) {
+            self.$advance_comment()
+          };
+          if (($truthy(self.current_comment) && ($truthy(self.current_comment.$text()['$=~']($$('MAGIC_COMMENT_RE')))))) {
+            self.$advance_comment()
+          };
+          if (($truthy(self.current_comment) && ($truthy(self.current_comment.$text()['$=~']($$$($$('Buffer'), 'ENCODING_RE')))))) {
             return self.$advance_comment()
           } else {
             return nil
           };
-        }, $Associator_advance_through_directives$19.$$arity = 0), nil) && 'advance_through_directives';
-      })($$($nesting, 'Comment'), null, $nesting)
+        }, 0);
+      })($$('Comment'), null, $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/rewriter"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_le(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs <= rhs : lhs['$<='](rhs);
-  }
-  function $rb_ge(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs >= rhs : lhs['$>='](rhs);
-  }
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $gvars = Opal.gvars, $truthy = Opal.truthy, $hash2 = Opal.hash2;
-
-  Opal.add_stubs(['$attr_reader', '$warn_of_deprecation', '$class', '$new', '$lambda', '$puts', '$render', '$consumer=', '$-', '$append', '$freeze', '$begin', '$end', '$+', '$in_transaction?', '$raise', '$dup', '$source', '$each', '$sort', '$begin_pos', '$range', '$length', '$replacement', '$[]=', '$private', '$empty?', '$!', '$allow_multiple_insertions?', '$clobbered_insertion?', '$raise_clobber_error', '$record_insertion', '$adjacent_updates?', '$find', '$overlaps?', '$replace_compatible_with_insertion?', '$merge_actions!', '$<<', '$active_queue', '$adjacent_insertions?', '$merge_actions', '$delete', '$can_merge?', '$record_replace', '$|', '$active_insertions', '$active_insertions=', '$active_clobber', '$clobbered_position_mask', '$active_clobber=', '$size', '$!=', '$&', '$<=', '$end_pos', '$adjacent_insertion_mask', '$select', '$adjacent?', '$adjacent_position_mask', '$>=', '$==', '$[]', '$all?', '$intersect', '$nil?', '$max', '$sort_by', '$push', '$join', '$first', '$max_by', '$merge_replacements', '$replace_actions', '$disjoint?', '$<', '$process', '$extend']);
+Opal.modules["parser/source/rewriter"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $gvars = Opal.gvars, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $def = Opal.def, $rb_plus = Opal.rb_plus, $truthy = Opal.truthy, $not = Opal.not, $neqeq = Opal.neqeq, $rb_le = Opal.rb_le, $rb_ge = Opal.rb_ge, $rb_lt = Opal.rb_lt, $hash2 = Opal.hash2, $const_set = Opal.const_set;
+
+  Opal.add_stubs('attr_reader,warn_of_deprecation,class,new,lambda,puts,render,consumer=,-,append,freeze,begin,end,+,in_transaction?,raise,dup,source,each,sort,begin_pos,range,length,replacement,[]=,private,empty?,clobbered_insertion?,!,allow_multiple_insertions?,raise_clobber_error,record_insertion,adjacent_updates?,find,overlaps?,replace_compatible_with_insertion?,merge_actions!,<<,active_queue,adjacent_insertions?,merge_actions,delete,can_merge?,record_replace,|,active_insertions,active_insertions=,active_clobber,clobbered_position_mask,active_clobber=,size,!=,&,<=,end_pos,adjacent_insertion_mask,select,adjacent?,adjacent_position_mask,>=,==,[],all?,intersect,nil?,max,sort_by,push,join,first,max_by,merge_replacements,replace_actions,disjoint?,<,process,extend');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -5711,30 +4843,27 @@ Opal.modules["parser/source/rewriter"] = function(Opal) {
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'Rewriter');
 
-        var $nesting = [self].concat($parent_nesting), $Rewriter_initialize$1, $Rewriter_remove$3, $Rewriter_insert_before$4, $Rewriter_wrap$5, $Rewriter_insert_before_multi$6, $Rewriter_insert_after$7, $Rewriter_insert_after_multi$8, $Rewriter_replace$9, $Rewriter_process$10, $Rewriter_transaction$12, $Rewriter_append$13, $Rewriter_record_insertion$16, $Rewriter_record_replace$17, $Rewriter_clobbered_position_mask$18, $Rewriter_adjacent_position_mask$19, $Rewriter_adjacent_insertion_mask$20, $Rewriter_clobbered_insertion$ques$21, $Rewriter_adjacent_insertions$ques$23, $Rewriter_adjacent_updates$ques$25, $Rewriter_replace_compatible_with_insertion$ques$27, $Rewriter_can_merge$ques$28, $Rewriter_merge_actions$30, $Rewriter_merge_actions$excl$33, $Rewriter_merge_replacements$34, $Rewriter_replace_actions$36, $Rewriter_raise_clobber_error$38, $Rewriter_in_transaction$ques$39, $Rewriter_active_queue$40, $Rewriter_active_clobber$41, $Rewriter_active_insertions$42, $Rewriter_active_clobber$eq$43, $Rewriter_active_insertions$eq$44, $Rewriter_adjacent$ques$45;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.diagnostics = self.$$prototype.insert_before_multi_order = self.$$prototype.insert_after_multi_order = self.$$prototype.source_buffer = self.$$prototype.queue = self.$$prototype.clobber = self.$$prototype.insertions = self.$$prototype.pending_queue = self.$$prototype.pending_clobber = self.$$prototype.pending_insertions = nil;
+        $proto.diagnostics = $proto.insert_before_multi_order = $proto.insert_after_multi_order = $proto.source_buffer = $proto.queue = $proto.clobber = $proto.insertions = $proto.pending_queue = $proto.pending_clobber = $proto.pending_insertions = nil;
         
         self.$attr_reader("source_buffer");
         self.$attr_reader("diagnostics");
         
-        Opal.def(self, '$initialize', $Rewriter_initialize$1 = function $$initialize(source_buffer) {
-          var $$2, self = this, $writer = nil;
+        $def(self, '$initialize', function $$initialize(source_buffer) {
+          var self = this, $writer = nil;
 
           
           self.$class().$warn_of_deprecation();
-          self.diagnostics = $$$($$($nesting, 'Diagnostic'), 'Engine').$new();
+          self.diagnostics = $$$($$('Diagnostic'), 'Engine').$new();
           
-          $writer = [$send(self, 'lambda', [], ($$2 = function(diag){var self = $$2.$$s == null ? this : $$2.$$s;
-            if ($gvars.stderr == null) $gvars.stderr = nil;
+          $writer = [$send(self, 'lambda', [], function $$1(diag){            if ($gvars.stderr == null) $gvars.stderr = nil;
 
             
             
-            if (diag == null) {
-              diag = nil;
-            };
-            return $gvars.stderr.$puts(diag.$render());}, $$2.$$s = self, $$2.$$arity = 1, $$2))];
-          $send(self.diagnostics, 'consumer=', Opal.to_a($writer));
+            if (diag == null) diag = nil;;
+            return $gvars.stderr.$puts(diag.$render());}, 1)];
+          $send(self.diagnostics, 'consumer=', $to_a($writer));
           $writer[$rb_minus($writer["length"], 1)];;
           self.source_buffer = source_buffer;
           self.queue = [];
@@ -5745,93 +4874,92 @@ Opal.modules["parser/source/rewriter"] = function(Opal) {
           self.pending_queue = nil;
           self.pending_clobber = nil;
           return (self.pending_insertions = nil);
-        }, $Rewriter_initialize$1.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$remove', $Rewriter_remove$3 = function $$remove(range) {
+        $def(self, '$remove', function $$remove(range) {
           var self = this;
 
-          return self.$append($$$($$($nesting, 'Rewriter'), 'Action').$new(range, "".$freeze()))
-        }, $Rewriter_remove$3.$$arity = 1);
+          return self.$append($$$($$('Rewriter'), 'Action').$new(range, "".$freeze()))
+        }, 1);
         
-        Opal.def(self, '$insert_before', $Rewriter_insert_before$4 = function $$insert_before(range, content) {
+        $def(self, '$insert_before', function $$insert_before(range, content) {
           var self = this;
 
-          return self.$append($$$($$($nesting, 'Rewriter'), 'Action').$new(range.$begin(), content))
-        }, $Rewriter_insert_before$4.$$arity = 2);
+          return self.$append($$$($$('Rewriter'), 'Action').$new(range.$begin(), content))
+        }, 2);
         
-        Opal.def(self, '$wrap', $Rewriter_wrap$5 = function $$wrap(range, before, after) {
+        $def(self, '$wrap', function $$wrap(range, before, after) {
           var self = this;
 
           
-          self.$append($$$($$($nesting, 'Rewriter'), 'Action').$new(range.$begin(), before));
-          return self.$append($$$($$($nesting, 'Rewriter'), 'Action').$new(range.$end(), after));
-        }, $Rewriter_wrap$5.$$arity = 3);
+          self.$append($$$($$('Rewriter'), 'Action').$new(range.$begin(), before));
+          return self.$append($$$($$('Rewriter'), 'Action').$new(range.$end(), after));
+        }, 3);
         
-        Opal.def(self, '$insert_before_multi', $Rewriter_insert_before_multi$6 = function $$insert_before_multi(range, content) {
+        $def(self, '$insert_before_multi', function $$insert_before_multi(range, content) {
           var self = this;
 
           
           self.insert_before_multi_order = $rb_minus(self.insert_before_multi_order, 1);
-          return self.$append($$$($$($nesting, 'Rewriter'), 'Action').$new(range.$begin(), content, true, self.insert_before_multi_order));
-        }, $Rewriter_insert_before_multi$6.$$arity = 2);
+          return self.$append($$$($$('Rewriter'), 'Action').$new(range.$begin(), content, true, self.insert_before_multi_order));
+        }, 2);
         
-        Opal.def(self, '$insert_after', $Rewriter_insert_after$7 = function $$insert_after(range, content) {
+        $def(self, '$insert_after', function $$insert_after(range, content) {
           var self = this;
 
-          return self.$append($$$($$($nesting, 'Rewriter'), 'Action').$new(range.$end(), content))
-        }, $Rewriter_insert_after$7.$$arity = 2);
+          return self.$append($$$($$('Rewriter'), 'Action').$new(range.$end(), content))
+        }, 2);
         
-        Opal.def(self, '$insert_after_multi', $Rewriter_insert_after_multi$8 = function $$insert_after_multi(range, content) {
+        $def(self, '$insert_after_multi', function $$insert_after_multi(range, content) {
           var self = this;
 
           
           self.insert_after_multi_order = $rb_plus(self.insert_after_multi_order, 1);
-          return self.$append($$$($$($nesting, 'Rewriter'), 'Action').$new(range.$end(), content, true, self.insert_after_multi_order));
-        }, $Rewriter_insert_after_multi$8.$$arity = 2);
+          return self.$append($$$($$('Rewriter'), 'Action').$new(range.$end(), content, true, self.insert_after_multi_order));
+        }, 2);
         
-        Opal.def(self, '$replace', $Rewriter_replace$9 = function $$replace(range, content) {
+        $def(self, '$replace', function $$replace(range, content) {
           var self = this;
 
-          return self.$append($$$($$($nesting, 'Rewriter'), 'Action').$new(range, content))
-        }, $Rewriter_replace$9.$$arity = 2);
+          return self.$append($$$($$('Rewriter'), 'Action').$new(range, content))
+        }, 2);
         
-        Opal.def(self, '$process', $Rewriter_process$10 = function $$process() {
-          var $$11, self = this, adjustment = nil, source = nil;
+        $def(self, '$process', function $$process() {
+          var self = this, adjustment = nil, source = nil;
 
           
           if ($truthy(self['$in_transaction?']())) {
-            self.$raise("" + "Do not call " + (self.$class()) + "#" + ("process") + " inside a transaction")};
+            self.$raise("Do not call " + (self.$class()) + "#" + ("process") + " inside a transaction")
+          };
           adjustment = 0;
           source = self.source_buffer.$source().$dup();
-          $send(self.queue.$sort(), 'each', [], ($$11 = function(action){var self = $$11.$$s == null ? this : $$11.$$s, begin_pos = nil, end_pos = nil, $writer = nil;
+          $send(self.queue.$sort(), 'each', [], function $$2(action){var begin_pos = nil, end_pos = nil, $writer = nil;
 
             
             
-            if (action == null) {
-              action = nil;
-            };
+            if (action == null) action = nil;;
             begin_pos = $rb_plus(action.$range().$begin_pos(), adjustment);
             end_pos = $rb_plus(begin_pos, action.$range().$length());
             
             $writer = [Opal.Range.$new(begin_pos,end_pos, true), action.$replacement()];
-            $send(source, '[]=', Opal.to_a($writer));
+            $send(source, '[]=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
-            return (adjustment = $rb_plus(adjustment, $rb_minus(action.$replacement().$length(), action.$range().$length())));}, $$11.$$s = self, $$11.$$arity = 1, $$11));
+            return (adjustment = $rb_plus(adjustment, $rb_minus(action.$replacement().$length(), action.$range().$length())));}, 1);
           return source;
-        }, $Rewriter_process$10.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$transaction', $Rewriter_transaction$12 = function $$transaction() {
-          var $iter = $Rewriter_transaction$12.$$p, $yield = $iter || nil, self = this;
+        $def(self, '$transaction', function $$transaction() {
+          var $yield = $$transaction.$$p || nil, self = this;
 
-          if ($iter) $Rewriter_transaction$12.$$p = null;
+          delete $$transaction.$$p;
           return (function() { try {
           
-          if (($yield !== nil)) {
-          } else {
+          if (!($yield !== nil)) {
             self.$raise("" + (self.$class()) + "#" + ("transaction") + " requires block")
           };
           if ($truthy(self['$in_transaction?']())) {
-            self.$raise("Nested transaction is not supported")};
+            self.$raise("Nested transaction is not supported")
+          };
           self.pending_queue = self.queue.$dup();
           self.pending_clobber = self.clobber;
           self.pending_insertions = self.insertions;
@@ -5843,42 +4971,38 @@ Opal.modules["parser/source/rewriter"] = function(Opal) {
           } finally {
             ((self.pending_queue = nil), (self.pending_clobber = nil), (self.pending_insertions = nil))
           }; })()
-        }, $Rewriter_transaction$12.$$arity = 0);
+        }, 0);
         self.$private();
         
-        Opal.def(self, '$append', $Rewriter_append$13 = function $$append(action) {
-          var $$14, $$15, self = this, range = nil, $ret_or_1 = nil, conflicting = nil, adjacent = nil, insertions = nil;
+        $def(self, '$append', function $$append(action) {
+          var self = this, range = nil, conflicting = nil, adjacent = nil, insertions = nil;
 
           
           range = action.$range();
           if ($truthy(range['$empty?']())) {
             
             if ($truthy(action.$replacement()['$empty?']())) {
-              return self};
-            if ($truthy((function() {if ($truthy(($ret_or_1 = action['$allow_multiple_insertions?']()['$!']()))) {
-              
-              return (conflicting = self['$clobbered_insertion?'](range));
-            } else {
-              return $ret_or_1
-            }; return nil; })())) {
-              self.$raise_clobber_error(action, [conflicting])};
+              return self
+            };
+            if (($not(action['$allow_multiple_insertions?']()) && ($truthy((conflicting = self['$clobbered_insertion?'](range)))))) {
+              self.$raise_clobber_error(action, [conflicting])
+            };
             self.$record_insertion(range);
             if ($truthy((adjacent = self['$adjacent_updates?'](range)))) {
               
-              conflicting = $send(adjacent, 'find', [], ($$14 = function(a){var self = $$14.$$s == null ? this : $$14.$$s, $ret_or_2 = nil;
+              conflicting = $send(adjacent, 'find', [], function $$3(a){var self = $$3.$$s == null ? this : $$3.$$s, $ret_or_1 = nil;
 
                 
                 
-                if (a == null) {
-                  a = nil;
-                };
-                if ($truthy(($ret_or_2 = a.$range()['$overlaps?'](range)))) {
+                if (a == null) a = nil;;
+                if ($truthy(($ret_or_1 = a.$range()['$overlaps?'](range)))) {
                   return self['$replace_compatible_with_insertion?'](a, action)['$!']()
                 } else {
-                  return $ret_or_2
-                };}, $$14.$$s = self, $$14.$$arity = 1, $$14));
+                  return $ret_or_1
+                };}, {$$arity: 1, $$s: self});
               if ($truthy(conflicting)) {
-                self.$raise_clobber_error(action, [conflicting])};
+                self.$raise_clobber_error(action, [conflicting])
+              };
               self['$merge_actions!'](action, adjacent);
             } else {
               self.$active_queue()['$<<'](action)
@@ -5886,24 +5010,19 @@ Opal.modules["parser/source/rewriter"] = function(Opal) {
           } else {
             
             if ($truthy((insertions = self['$adjacent_insertions?'](range)))) {
-              $send(insertions, 'each', [], ($$15 = function(insertion){var self = $$15.$$s == null ? this : $$15.$$s, $ret_or_3 = nil;
+              $send(insertions, 'each', [], function $$4(insertion){var self = $$4.$$s == null ? this : $$4.$$s;
 
                 
                 
-                if (insertion == null) {
-                  insertion = nil;
-                };
-                if ($truthy((function() {if ($truthy(($ret_or_3 = range['$overlaps?'](insertion.$range())))) {
-                  return self['$replace_compatible_with_insertion?'](action, insertion)['$!']()
-                } else {
-                  return $ret_or_3
-                }; return nil; })())) {
+                if (insertion == null) insertion = nil;;
+                if (($truthy(range['$overlaps?'](insertion.$range())) && ($not(self['$replace_compatible_with_insertion?'](action, insertion))))) {
                   return self.$raise_clobber_error(action, [insertion])
                 } else {
                   
                   action = self.$merge_actions(action, [insertion]);
                   return self.$active_queue().$delete(insertion);
-                };}, $$15.$$s = self, $$15.$$arity = 1, $$15))};
+                };}, {$$arity: 1, $$s: self})
+            };
             if ($truthy((adjacent = self['$adjacent_updates?'](range)))) {
               if ($truthy(self['$can_merge?'](action, adjacent))) {
                 
@@ -5919,84 +5038,77 @@ Opal.modules["parser/source/rewriter"] = function(Opal) {
             };
           };
           return self;
-        }, $Rewriter_append$13.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$record_insertion', $Rewriter_record_insertion$16 = function $$record_insertion(range) {
+        $def(self, '$record_insertion', function $$record_insertion(range) {
           var self = this, $writer = nil;
 
           
           $writer = [self.$active_insertions()['$|']((1)['$<<'](range.$begin_pos()))];
-          $send(self, 'active_insertions=', Opal.to_a($writer));
+          $send(self, 'active_insertions=', $to_a($writer));
           return $writer[$rb_minus($writer["length"], 1)];
-        }, $Rewriter_record_insertion$16.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$record_replace', $Rewriter_record_replace$17 = function $$record_replace(range) {
+        $def(self, '$record_replace', function $$record_replace(range) {
           var self = this, $writer = nil;
 
           
           $writer = [self.$active_clobber()['$|'](self.$clobbered_position_mask(range))];
-          $send(self, 'active_clobber=', Opal.to_a($writer));
+          $send(self, 'active_clobber=', $to_a($writer));
           return $writer[$rb_minus($writer["length"], 1)];
-        }, $Rewriter_record_replace$17.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$clobbered_position_mask', $Rewriter_clobbered_position_mask$18 = function $$clobbered_position_mask(range) {
-          var self = this;
-
+        $def(self, '$clobbered_position_mask', function $$clobbered_position_mask(range) {
+          
           return $rb_minus((1)['$<<'](range.$size()), 1)['$<<'](range.$begin_pos())
-        }, $Rewriter_clobbered_position_mask$18.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$adjacent_position_mask', $Rewriter_adjacent_position_mask$19 = function $$adjacent_position_mask(range) {
-          var self = this;
-
+        $def(self, '$adjacent_position_mask', function $$adjacent_position_mask(range) {
+          
           return $rb_minus((1)['$<<']($rb_plus(range.$size(), 2)), 1)['$<<']($rb_minus(range.$begin_pos(), 1))
-        }, $Rewriter_adjacent_position_mask$19.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$adjacent_insertion_mask', $Rewriter_adjacent_insertion_mask$20 = function $$adjacent_insertion_mask(range) {
-          var self = this;
-
+        $def(self, '$adjacent_insertion_mask', function $$adjacent_insertion_mask(range) {
+          
           return $rb_minus((1)['$<<']($rb_plus(range.$size(), 1)), 1)['$<<'](range.$begin_pos())
-        }, $Rewriter_adjacent_insertion_mask$20.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$clobbered_insertion?', $Rewriter_clobbered_insertion$ques$21 = function(insertion) {
-          var $$22, self = this, insertion_pos = nil;
+        $def(self, '$clobbered_insertion?', function $Rewriter_clobbered_insertion$ques$5(insertion) {
+          var self = this, insertion_pos = nil;
 
           
           insertion_pos = insertion.$begin_pos();
-          if ($truthy(self.$active_insertions()['$&']((1)['$<<'](insertion_pos))['$!='](0))) {
-            return $send(self.$active_queue(), 'find', [], ($$22 = function(a){var self = $$22.$$s == null ? this : $$22.$$s, $ret_or_4 = nil;
+          if ($neqeq(self.$active_insertions()['$&']((1)['$<<'](insertion_pos)), 0)) {
+            return $send(self.$active_queue(), 'find', [], function $$6(a){var $ret_or_1 = nil;
 
               
               
-              if (a == null) {
-                a = nil;
-              };
-              if ($truthy(($ret_or_4 = $rb_le(a.$range().$begin_pos(), insertion_pos)))) {
+              if (a == null) a = nil;;
+              if ($truthy(($ret_or_1 = $rb_le(a.$range().$begin_pos(), insertion_pos)))) {
                 return $rb_le(insertion_pos, a.$range().$end_pos())
               } else {
-                return $ret_or_4
-              };}, $$22.$$s = self, $$22.$$arity = 1, $$22))
+                return $ret_or_1
+              };}, 1)
           } else {
             return nil
           };
-        }, $Rewriter_clobbered_insertion$ques$21.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$adjacent_insertions?', $Rewriter_adjacent_insertions$ques$23 = function(range) {
-          var $$24, self = this, result = nil;
+        $def(self, '$adjacent_insertions?', function $Rewriter_adjacent_insertions$ques$7(range) {
+          var self = this, result = nil;
 
-          if ($truthy(self.$active_insertions()['$&'](self.$adjacent_insertion_mask(range))['$!='](0))) {
+          if ($neqeq(self.$active_insertions()['$&'](self.$adjacent_insertion_mask(range)), 0)) {
             
-            result = $send(self.$active_queue(), 'select', [], ($$24 = function(a){var self = $$24.$$s == null ? this : $$24.$$s, $ret_or_5 = nil;
+            result = $send(self.$active_queue(), 'select', [], function $$8(a){var self = $$8.$$s == null ? this : $$8.$$s, $ret_or_1 = nil;
 
               
               
-              if (a == null) {
-                a = nil;
-              };
-              if ($truthy(($ret_or_5 = a.$range()['$empty?']()))) {
+              if (a == null) a = nil;;
+              if ($truthy(($ret_or_1 = a.$range()['$empty?']()))) {
                 return self['$adjacent?'](range, a.$range())
               } else {
-                return $ret_or_5
-              };}, $$24.$$s = self, $$24.$$arity = 1, $$24));
+                return $ret_or_1
+              };}, {$$arity: 1, $$s: self});
             if ($truthy(result['$empty?']())) {
               return nil
             } else {
@@ -6005,197 +5117,168 @@ Opal.modules["parser/source/rewriter"] = function(Opal) {
           } else {
             return nil
           }
-        }, $Rewriter_adjacent_insertions$ques$23.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$adjacent_updates?', $Rewriter_adjacent_updates$ques$25 = function(range) {
-          var $$26, self = this;
+        $def(self, '$adjacent_updates?', function $Rewriter_adjacent_updates$ques$9(range) {
+          var self = this;
 
-          if ($truthy(self.$active_clobber()['$&'](self.$adjacent_position_mask(range))['$!='](0))) {
-            return $send(self.$active_queue(), 'select', [], ($$26 = function(a){var self = $$26.$$s == null ? this : $$26.$$s;
+          if ($neqeq(self.$active_clobber()['$&'](self.$adjacent_position_mask(range)), 0)) {
+            return $send(self.$active_queue(), 'select', [], function $$10(a){var self = $$10.$$s == null ? this : $$10.$$s;
 
               
               
-              if (a == null) {
-                a = nil;
-              };
-              return self['$adjacent?'](range, a.$range());}, $$26.$$s = self, $$26.$$arity = 1, $$26))
+              if (a == null) a = nil;;
+              return self['$adjacent?'](range, a.$range());}, {$$arity: 1, $$s: self})
           } else {
             return nil
           }
-        }, $Rewriter_adjacent_updates$ques$25.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$replace_compatible_with_insertion?', $Rewriter_replace_compatible_with_insertion$ques$27 = function(replace, insertion) {
-          var self = this, $ret_or_6 = nil, $ret_or_7 = nil, offset = nil;
+        $def(self, '$replace_compatible_with_insertion?', function $Rewriter_replace_compatible_with_insertion$ques$11(replace, insertion) {
+          var $ret_or_1 = nil, $ret_or_2 = nil, offset = nil;
 
-          if ($truthy(($ret_or_6 = (function() {if ($truthy(($ret_or_7 = $rb_ge($rb_minus(replace.$replacement().$length(), replace.$range().$size()), insertion.$range().$size())))) {
-            
-            return (offset = $rb_minus(insertion.$range().$begin_pos(), replace.$range().$begin_pos()));
-          } else {
-            return $ret_or_7
-          }; return nil; })()))) {
+          if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = $rb_ge($rb_minus(replace.$replacement().$length(), replace.$range().$size()), insertion.$range().$size()))) ? ((offset = $rb_minus(insertion.$range().$begin_pos(), replace.$range().$begin_pos()))) : ($ret_or_2))))) {
             return replace.$replacement()['$[]'](offset, insertion.$replacement().$length())['$=='](insertion.$replacement())
           } else {
-            return $ret_or_6
+            return $ret_or_1
           }
-        }, $Rewriter_replace_compatible_with_insertion$ques$27.$$arity = 2);
+        }, 2);
         
-        Opal.def(self, '$can_merge?', $Rewriter_can_merge$ques$28 = function(action, existing) {
-          var $$29, self = this, range = nil;
+        $def(self, '$can_merge?', function $Rewriter_can_merge$ques$12(action, existing) {
+          var range = nil;
 
           
           range = action.$range();
-          return $send(existing, 'all?', [], ($$29 = function(other){var self = $$29.$$s == null ? this : $$29.$$s, overlap = nil, repl1_offset = nil, repl2_offset = nil, repl1_length = nil, repl2_length = nil, replacement1 = nil, $ret_or_8 = nil, replacement2 = nil, $ret_or_9 = nil;
+          return $send(existing, 'all?', [], function $$13(other){var overlap = nil, repl1_offset = nil, repl2_offset = nil, repl1_length = nil, repl2_length = nil, replacement1 = nil, $ret_or_1 = nil, replacement2 = nil;
 
             
             
-            if (other == null) {
-              other = nil;
-            };
+            if (other == null) other = nil;;
             overlap = range.$intersect(other.$range());
             if ($truthy(overlap['$nil?']())) {
-              return true;};
+              return true;
+            };
             repl1_offset = $rb_minus(overlap.$begin_pos(), range.$begin_pos());
             repl2_offset = $rb_minus(overlap.$begin_pos(), other.$range().$begin_pos());
             repl1_length = [$rb_minus(other.$range().$length(), repl2_offset), $rb_minus(other.$replacement().$length(), repl2_offset)].$max();
             repl2_length = [$rb_minus(range.$length(), repl1_offset), $rb_minus(action.$replacement().$length(), repl1_offset)].$max();
-            replacement1 = (function() {if ($truthy(($ret_or_8 = action.$replacement()['$[]'](repl1_offset, repl1_length)))) {
-              return $ret_or_8
-            } else {
-              return "".$freeze()
-            }; return nil; })();
-            replacement2 = (function() {if ($truthy(($ret_or_9 = other.$replacement()['$[]'](repl2_offset, repl2_length)))) {
-              return $ret_or_9
-            } else {
-              return "".$freeze()
-            }; return nil; })();
-            return replacement1['$=='](replacement2);}, $$29.$$s = self, $$29.$$arity = 1, $$29));
-        }, $Rewriter_can_merge$ques$28.$$arity = 2);
+            replacement1 = ($truthy(($ret_or_1 = action.$replacement()['$[]'](repl1_offset, repl1_length))) ? ($ret_or_1) : ("".$freeze()));
+            replacement2 = ($truthy(($ret_or_1 = other.$replacement()['$[]'](repl2_offset, repl2_length))) ? ($ret_or_1) : ("".$freeze()));
+            return replacement1['$=='](replacement2);}, 1);
+        }, 2);
         
-        Opal.def(self, '$merge_actions', $Rewriter_merge_actions$30 = function $$merge_actions(action, existing) {
-          var $$31, $$32, self = this, actions = nil, range = nil;
+        $def(self, '$merge_actions', function $$merge_actions(action, existing) {
+          var self = this, actions = nil, range = nil;
 
           
-          actions = $send(existing.$push(action), 'sort_by', [], ($$31 = function(a){var self = $$31.$$s == null ? this : $$31.$$s;
-
+          actions = $send(existing.$push(action), 'sort_by', [], function $$14(a){
             
             
-            if (a == null) {
-              a = nil;
-            };
-            return [a.$range().$begin_pos(), a.$range().$end_pos()];}, $$31.$$s = self, $$31.$$arity = 1, $$31));
-          range = actions.$first().$range().$join($send(actions, 'max_by', [], ($$32 = function(a){var self = $$32.$$s == null ? this : $$32.$$s;
-
+            if (a == null) a = nil;;
+            return [a.$range().$begin_pos(), a.$range().$end_pos()];}, 1);
+          range = actions.$first().$range().$join($send(actions, 'max_by', [], function $$15(a){
             
             
-            if (a == null) {
-              a = nil;
-            };
-            return a.$range().$end_pos();}, $$32.$$s = self, $$32.$$arity = 1, $$32)).$range());
-          return $$$($$($nesting, 'Rewriter'), 'Action').$new(range, self.$merge_replacements(actions));
-        }, $Rewriter_merge_actions$30.$$arity = 2);
+            if (a == null) a = nil;;
+            return a.$range().$end_pos();}, 1).$range());
+          return $$$($$('Rewriter'), 'Action').$new(range, self.$merge_replacements(actions));
+        }, 2);
         
-        Opal.def(self, '$merge_actions!', $Rewriter_merge_actions$excl$33 = function(action, existing) {
+        $def(self, '$merge_actions!', function $Rewriter_merge_actions$excl$16(action, existing) {
           var self = this, new_action = nil;
 
           
           new_action = self.$merge_actions(action, existing);
           self.$active_queue().$delete(action);
           return self.$replace_actions(existing, new_action);
-        }, $Rewriter_merge_actions$excl$33.$$arity = 2);
+        }, 2);
         
-        Opal.def(self, '$merge_replacements', $Rewriter_merge_replacements$34 = function $$merge_replacements(actions) {
-          var $$35, self = this, result = nil, prev_act = nil;
+        $def(self, '$merge_replacements', function $$merge_replacements(actions) {
+          var result = nil, prev_act = nil;
 
           
           result = "".$dup();
           prev_act = nil;
-          $send(actions, 'each', [], ($$35 = function(act){var self = $$35.$$s == null ? this : $$35.$$s, $ret_or_10 = nil, prev_end = nil, offset = nil;
+          $send(actions, 'each', [], function $$17(act){var prev_end = nil, offset = nil;
 
             
             
-            if (act == null) {
-              act = nil;
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_10 = prev_act['$!']()))) {
-              return $ret_or_10
-            } else {
-              return act.$range()['$disjoint?'](prev_act.$range())
-            }; return nil; })())) {
+            if (act == null) act = nil;;
+            if (($not(prev_act) || ($truthy(act.$range()['$disjoint?'](prev_act.$range()))))) {
               result['$<<'](act.$replacement())
             } else {
               
               prev_end = [$rb_plus(prev_act.$range().$begin_pos(), prev_act.$replacement().$length()), prev_act.$range().$end_pos()].$max();
               offset = $rb_minus(prev_end, act.$range().$begin_pos());
               if ($truthy($rb_lt(offset, act.$replacement().$size()))) {
-                result['$<<'](act.$replacement()['$[]'](Opal.Range.$new(offset, -1, false)))};
+                result['$<<'](act.$replacement()['$[]'](Opal.Range.$new(offset, -1, false)))
+              };
             };
-            return (prev_act = act);}, $$35.$$s = self, $$35.$$arity = 1, $$35));
+            return (prev_act = act);}, 1);
           return result;
-        }, $Rewriter_merge_replacements$34.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$replace_actions', $Rewriter_replace_actions$36 = function $$replace_actions(old, updated) {
-          var $$37, self = this;
+        $def(self, '$replace_actions', function $$replace_actions(old, updated) {
+          var self = this;
 
           
-          $send(old, 'each', [], ($$37 = function(act){var self = $$37.$$s == null ? this : $$37.$$s;
+          $send(old, 'each', [], function $$18(act){var self = $$18.$$s == null ? this : $$18.$$s;
 
             
             
-            if (act == null) {
-              act = nil;
-            };
-            return self.$active_queue().$delete(act);}, $$37.$$s = self, $$37.$$arity = 1, $$37));
+            if (act == null) act = nil;;
+            return self.$active_queue().$delete(act);}, {$$arity: 1, $$s: self});
           return self.$active_queue()['$<<'](updated);
-        }, $Rewriter_replace_actions$36.$$arity = 2);
+        }, 2);
         
-        Opal.def(self, '$raise_clobber_error', $Rewriter_raise_clobber_error$38 = function $$raise_clobber_error(action, existing) {
+        $def(self, '$raise_clobber_error', function $$raise_clobber_error(action, existing) {
           var self = this, diagnostic = nil;
 
           
-          diagnostic = $$($nesting, 'Diagnostic').$new("error", "invalid_action", $hash2(["action"], {"action": action}), action.$range());
+          diagnostic = $$('Diagnostic').$new("error", "invalid_action", $hash2(["action"], {"action": action}), action.$range());
           self.diagnostics.$process(diagnostic);
-          diagnostic = $$($nesting, 'Diagnostic').$new("note", "clobbered", $hash2(["action"], {"action": existing['$[]'](0)}), existing['$[]'](0).$range());
+          diagnostic = $$('Diagnostic').$new("note", "clobbered", $hash2(["action"], {"action": existing['$[]'](0)}), existing['$[]'](0).$range());
           self.diagnostics.$process(diagnostic);
-          return self.$raise($$($nesting, 'ClobberingError'), "Parser::Source::Rewriter detected clobbering");
-        }, $Rewriter_raise_clobber_error$38.$$arity = 2);
+          return self.$raise($$('ClobberingError'), "Parser::Source::Rewriter detected clobbering");
+        }, 2);
         
-        Opal.def(self, '$in_transaction?', $Rewriter_in_transaction$ques$39 = function() {
+        $def(self, '$in_transaction?', function $Rewriter_in_transaction$ques$19() {
           var self = this;
 
           return self.pending_queue['$nil?']()['$!']()
-        }, $Rewriter_in_transaction$ques$39.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$active_queue', $Rewriter_active_queue$40 = function $$active_queue() {
-          var self = this, $ret_or_11 = nil;
+        $def(self, '$active_queue', function $$active_queue() {
+          var self = this, $ret_or_1 = nil;
 
-          if ($truthy(($ret_or_11 = self.pending_queue))) {
-            return $ret_or_11
+          if ($truthy(($ret_or_1 = self.pending_queue))) {
+            return $ret_or_1
           } else {
             return self.queue
           }
-        }, $Rewriter_active_queue$40.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$active_clobber', $Rewriter_active_clobber$41 = function $$active_clobber() {
-          var self = this, $ret_or_12 = nil;
+        $def(self, '$active_clobber', function $$active_clobber() {
+          var self = this, $ret_or_1 = nil;
 
-          if ($truthy(($ret_or_12 = self.pending_clobber))) {
-            return $ret_or_12
+          if ($truthy(($ret_or_1 = self.pending_clobber))) {
+            return $ret_or_1
           } else {
             return self.clobber
           }
-        }, $Rewriter_active_clobber$41.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$active_insertions', $Rewriter_active_insertions$42 = function $$active_insertions() {
-          var self = this, $ret_or_13 = nil;
+        $def(self, '$active_insertions', function $$active_insertions() {
+          var self = this, $ret_or_1 = nil;
 
-          if ($truthy(($ret_or_13 = self.pending_insertions))) {
-            return $ret_or_13
+          if ($truthy(($ret_or_1 = self.pending_insertions))) {
+            return $ret_or_1
           } else {
             return self.insertions
           }
-        }, $Rewriter_active_insertions$42.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$active_clobber=', $Rewriter_active_clobber$eq$43 = function(value) {
+        $def(self, '$active_clobber=', function $Rewriter_active_clobber$eq$20(value) {
           var self = this;
 
           if ($truthy(self.pending_clobber)) {
@@ -6203,9 +5286,9 @@ Opal.modules["parser/source/rewriter"] = function(Opal) {
           } else {
             return (self.clobber = value)
           }
-        }, $Rewriter_active_clobber$eq$43.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$active_insertions=', $Rewriter_active_insertions$eq$44 = function(value) {
+        $def(self, '$active_insertions=', function $Rewriter_active_insertions$eq$21(value) {
           var self = this;
 
           if ($truthy(self.pending_insertions)) {
@@ -6213,29 +5296,28 @@ Opal.modules["parser/source/rewriter"] = function(Opal) {
           } else {
             return (self.insertions = value)
           }
-        }, $Rewriter_active_insertions$eq$44.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$adjacent?', $Rewriter_adjacent$ques$45 = function(range1, range2) {
-          var self = this, $ret_or_14 = nil;
+        $def(self, '$adjacent?', function $Rewriter_adjacent$ques$22(range1, range2) {
+          var $ret_or_1 = nil;
 
-          if ($truthy(($ret_or_14 = $rb_le(range1.$begin_pos(), range2.$end_pos())))) {
+          if ($truthy(($ret_or_1 = $rb_le(range1.$begin_pos(), range2.$end_pos())))) {
             return $rb_le(range2.$begin_pos(), range1.$end_pos())
           } else {
-            return $ret_or_14
+            return $ret_or_1
           }
-        }, $Rewriter_adjacent$ques$45.$$arity = 2);
-        Opal.const_set($nesting[0], 'DEPRECATION_WARNING', ["Parser::Source::Rewriter is deprecated.", "Please update your code to use Parser::Source::TreeRewriter instead"].$join("\n").$freeze());
-        return self.$extend($$($nesting, 'Deprecation'));
+        }, 2);
+        $const_set($nesting[0], 'DEPRECATION_WARNING', ["Parser::Source::Rewriter is deprecated.", "Please update your code to use Parser::Source::TreeRewriter instead"].$join("\n").$freeze());
+        return self.$extend($$('Deprecation'));
       })($nesting[0], null, $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/rewriter/action"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy;
+Opal.modules["parser/source/rewriter/action"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $def = Opal.def, $truthy = Opal.truthy, $eqeq = Opal.eqeq;
 
-  Opal.add_stubs(['$include', '$attr_reader', '$alias_method', '$freeze', '$<=>', '$begin_pos', '$range', '$zero?', '$order', '$==', '$length', '$empty?', '$inspect']);
+  Opal.add_stubs('include,attr_reader,alias_method,freeze,<=>,begin_pos,range,zero?,order,empty?,==,length,inspect');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -6244,92 +5326,68 @@ Opal.modules["parser/source/rewriter/action"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Source');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'Action');
 
-        var $nesting = [self].concat($parent_nesting), $Action_initialize$1, $Action_$lt_eq_gt$2, $Action_to_s$3;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.range = self.$$prototype.replacement = nil;
+        $proto.replacement = $proto.range = nil;
         
-        self.$include($$($nesting, 'Comparable'));
+        self.$include($$('Comparable'));
         self.$attr_reader("range", "replacement", "allow_multiple_insertions", "order");
         self.$alias_method("allow_multiple_insertions?", "allow_multiple_insertions");
         
-        Opal.def(self, '$initialize', $Action_initialize$1 = function $$initialize(range, replacement, allow_multiple_insertions, order) {
+        $def(self, '$initialize', function $$initialize(range, replacement, allow_multiple_insertions, order) {
           var self = this;
 
           
           
-          if (replacement == null) {
-            replacement = "";
-          };
+          if (replacement == null) replacement = "";;
           
-          if (allow_multiple_insertions == null) {
-            allow_multiple_insertions = false;
-          };
+          if (allow_multiple_insertions == null) allow_multiple_insertions = false;;
           
-          if (order == null) {
-            order = 0;
-          };
+          if (order == null) order = 0;;
           self.range = range;
           self.replacement = replacement;
           self.allow_multiple_insertions = allow_multiple_insertions;
           self.order = order;
           return self.$freeze();
-        }, $Action_initialize$1.$$arity = -2);
+        }, -2);
         
-        Opal.def(self, '$<=>', $Action_$lt_eq_gt$2 = function(other) {
+        $def(self, '$<=>', function $Action_$lt_eq_gt$1(other) {
           var self = this, result = nil;
 
           
           result = self.$range().$begin_pos()['$<=>'](other.$range().$begin_pos());
-          if ($truthy(result['$zero?']())) {
-          } else {
+          if (!$truthy(result['$zero?']())) {
             return result
           };
           return self.$order()['$<=>'](other.$order());
-        }, $Action_$lt_eq_gt$2.$$arity = 1);
-        return (Opal.def(self, '$to_s', $Action_to_s$3 = function $$to_s() {
-          var self = this, $ret_or_1 = nil;
+        }, 1);
+        return $def(self, '$to_s', function $$to_s() {
+          var self = this;
 
-          if ($truthy((function() {if ($truthy(($ret_or_1 = self.range.$length()['$=='](0)))) {
-            return self.replacement['$empty?']()
-          } else {
-            return $ret_or_1
-          }; return nil; })())) {
+          if (($eqeq(self.range.$length(), 0) && ($truthy(self.replacement['$empty?']())))) {
             return "do nothing"
-          } else if (self.range.$length()['$=='](0)) {
-            return "" + "insert " + (self.replacement.$inspect())
+          } else if ($eqeq(self.range.$length(), 0)) {
+            return "insert " + (self.replacement.$inspect())
           } else if ($truthy(self.replacement['$empty?']())) {
-            return "" + "remove " + (self.range.$length()) + " character(s)"
+            return "remove " + (self.range.$length()) + " character(s)"
           } else {
-            return "" + "replace " + (self.range.$length()) + " character(s) with " + (self.replacement.$inspect())
+            return "replace " + (self.range.$length()) + " character(s) with " + (self.replacement.$inspect())
           }
-        }, $Action_to_s$3.$$arity = 0), nil) && 'to_s';
-      })($$($nesting, 'Rewriter'), null, $nesting)
+        }, 0);
+      })($$('Rewriter'), null, $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/tree_rewriter"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $hash2 = Opal.hash2, $lambda = Opal.lambda, $gvars = Opal.gvars, $send = Opal.send, $truthy = Opal.truthy, $range = Opal.range, $hash = Opal.hash, $slice = Opal.slice;
-
-  Opal.add_stubs(['$attr_reader', '$new', '$puts', '$render', '$consumer=', '$-', '$freeze', '$check_policy_validity', '$method', '$adjust', '$source_range', '$empty?', '$==', '$source_buffer', '$raise', '$combine', '$action_root', '$merge!', '$dup', '$contract', '$+', '$begin_pos', '$range', '$end_pos', '$check_range_validity', '$moved', '$to_s', '$replace', '$wrap', '$source', '$each', '$ordered_replacements', '$<<', '$[]', '$length', '$join', '$nested_actions', '$class', '$name', '$action_summary', '$warn_of_deprecation', '$insert_before', '$insert_after', '$extend', '$protected', '$private', '$as_replacements', '$size', '$===', '$first', '$map', '$to_range', '$inspect', '$values', '$<', '$>', '$trigger_policy', '$process']);
+Opal.modules["parser/source/tree_rewriter"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $hash2 = Opal.hash2, $lambda = Opal.lambda, $gvars = Opal.gvars, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $def = Opal.def, $eqeq = Opal.eqeq, $truthy = Opal.truthy, $rb_plus = Opal.rb_plus, $const_set = Opal.const_set, $eqeqeq = Opal.eqeqeq, $range = Opal.range, $to_ary = Opal.to_ary, $hash = Opal.hash, $rb_gt = Opal.rb_gt, $rb_lt = Opal.rb_lt, $slice = Opal.slice;
+
+  Opal.add_stubs('attr_reader,new,puts,render,consumer=,-,freeze,check_policy_validity,method,adjust,source_range,empty?,==,source_buffer,raise,combine,action_root,merge!,dup,contract,+,begin_pos,range,end_pos,check_range_validity,moved,to_s,replace,wrap,source,each,ordered_replacements,<<,[],length,join,nested_actions,class,name,action_summary,warn_of_deprecation,insert_before,insert_after,extend,protected,private,as_replacements,===,size,first,map,to_range,inspect,values,>,<,trigger_policy,process');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -6343,15 +5401,15 @@ Opal.modules["parser/source/tree_rewriter"] = function(Opal) {
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'TreeRewriter');
 
-        var $nesting = [self].concat($parent_nesting), $TreeRewriter_initialize$1, $TreeRewriter_empty$ques$3, $TreeRewriter_merge$excl$4, $TreeRewriter_merge$5, $TreeRewriter_import$excl$6, $TreeRewriter_replace$7, $TreeRewriter_wrap$8, $TreeRewriter_remove$9, $TreeRewriter_insert_before$10, $TreeRewriter_insert_after$11, $TreeRewriter_process$12, $TreeRewriter_as_replacements$14, $TreeRewriter_as_nested_actions$15, $TreeRewriter_transaction$16, $TreeRewriter_in_transaction$ques$17, $TreeRewriter_inspect$18, $TreeRewriter_insert_before_multi$19, $TreeRewriter_insert_after_multi$20, $TreeRewriter_action_summary$21, $TreeRewriter_check_policy_validity$23, $TreeRewriter_combine$24, $TreeRewriter_check_range_validity$25, $TreeRewriter_enforce_policy$26, $TreeRewriter_trigger_policy$27;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.diagnostics = self.$$prototype.source_buffer = self.$$prototype.enforcer = self.$$prototype.action_root = self.$$prototype.in_transaction = self.$$prototype.policy = nil;
+        $proto.diagnostics = $proto.source_buffer = $proto.enforcer = $proto.action_root = $proto.in_transaction = $proto.policy = nil;
         
         self.$attr_reader("source_buffer");
         self.$attr_reader("diagnostics");
         
-        Opal.def(self, '$initialize', $TreeRewriter_initialize$1 = function $$initialize(source_buffer, $kwargs) {
-          var crossing_deletions, different_replacements, swallowed_insertions, $$2, self = this, $writer = nil, all_encompassing_range = nil;
+        $def(self, '$initialize', function $$initialize(source_buffer, $kwargs) {
+          var crossing_deletions, different_replacements, swallowed_insertions, self = this, $writer = nil, all_encompassing_range = nil;
 
           
           
@@ -6362,31 +5420,22 @@ Opal.modules["parser/source/tree_rewriter"] = function(Opal) {
           };
           
           crossing_deletions = $kwargs.$$smap["crossing_deletions"];
-          if (crossing_deletions == null) {
-            crossing_deletions = "accept"
-          };
+          if (crossing_deletions == null) crossing_deletions = "accept";
           
           different_replacements = $kwargs.$$smap["different_replacements"];
-          if (different_replacements == null) {
-            different_replacements = "accept"
-          };
+          if (different_replacements == null) different_replacements = "accept";
           
           swallowed_insertions = $kwargs.$$smap["swallowed_insertions"];
-          if (swallowed_insertions == null) {
-            swallowed_insertions = "accept"
-          };
-          self.diagnostics = $$$($$($nesting, 'Diagnostic'), 'Engine').$new();
+          if (swallowed_insertions == null) swallowed_insertions = "accept";
+          self.diagnostics = $$$($$('Diagnostic'), 'Engine').$new();
           
-          $writer = [$lambda(($$2 = function(diag){var self = $$2.$$s == null ? this : $$2.$$s;
-            if ($gvars.stderr == null) $gvars.stderr = nil;
+          $writer = [$lambda(function $$1(diag){            if ($gvars.stderr == null) $gvars.stderr = nil;
 
             
             
-            if (diag == null) {
-              diag = nil;
-            };
-            return $gvars.stderr.$puts(diag.$render());}, $$2.$$s = self, $$2.$$arity = 1, $$2))];
-          $send(self.diagnostics, 'consumer=', Opal.to_a($writer));
+            if (diag == null) diag = nil;;
+            return $gvars.stderr.$puts(diag.$render());}, 1)];
+          $send(self.diagnostics, 'consumer=', $to_a($writer));
           $writer[$rb_minus($writer["length"], 1)];;
           self.source_buffer = source_buffer;
           self.in_transaction = false;
@@ -6394,34 +5443,33 @@ Opal.modules["parser/source/tree_rewriter"] = function(Opal) {
           self.$check_policy_validity();
           self.enforcer = self.$method("enforce_policy");
           all_encompassing_range = self.source_buffer.$source_range().$adjust($hash2(["begin_pos", "end_pos"], {"begin_pos": -1, "end_pos": 1}));
-          return (self.action_root = $$$($$($nesting, 'TreeRewriter'), 'Action').$new(all_encompassing_range, self.enforcer));
-        }, $TreeRewriter_initialize$1.$$arity = -2);
+          return (self.action_root = $$$($$('TreeRewriter'), 'Action').$new(all_encompassing_range, self.enforcer));
+        }, -2);
         
-        Opal.def(self, '$empty?', $TreeRewriter_empty$ques$3 = function() {
+        $def(self, '$empty?', function $TreeRewriter_empty$ques$2() {
           var self = this;
 
           return self.action_root['$empty?']()
-        }, $TreeRewriter_empty$ques$3.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$merge!', $TreeRewriter_merge$excl$4 = function(with$) {
+        $def(self, '$merge!', function $TreeRewriter_merge$excl$3(with$) {
           var self = this;
 
           
-          if (self.$source_buffer()['$=='](with$.$source_buffer())) {
-          } else {
+          if (!$eqeq(self.$source_buffer(), with$.$source_buffer())) {
             self.$raise("TreeRewriter are not for the same source_buffer")
           };
           self.action_root = self.action_root.$combine(with$.$action_root());
           return self;
-        }, $TreeRewriter_merge$excl$4.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$merge', $TreeRewriter_merge$5 = function $$merge(with$) {
+        $def(self, '$merge', function $$merge(with$) {
           var self = this;
 
           return self.$dup()['$merge!'](with$)
-        }, $TreeRewriter_merge$5.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$import!', $TreeRewriter_import$excl$6 = function(foreign_rewriter, $kwargs) {
+        $def(self, '$import!', function $TreeRewriter_import$excl$4(foreign_rewriter, $kwargs) {
           var offset, self = this, contracted = nil, merge_effective_range = nil, merge_with = nil;
 
           
@@ -6433,93 +5481,86 @@ Opal.modules["parser/source/tree_rewriter"] = function(Opal) {
           };
           
           offset = $kwargs.$$smap["offset"];
-          if (offset == null) {
-            offset = 0
-          };
+          if (offset == null) offset = 0;
           if ($truthy(foreign_rewriter['$empty?']())) {
-            return self};
+            return self
+          };
           contracted = foreign_rewriter.$action_root().$contract();
-          merge_effective_range = $$$($$$($$$('::', 'Parser'), 'Source'), 'Range').$new(self.source_buffer, $rb_plus(contracted.$range().$begin_pos(), offset), $rb_plus(contracted.$range().$end_pos(), offset));
+          merge_effective_range = $$$($$$($$$('Parser'), 'Source'), 'Range').$new(self.source_buffer, $rb_plus(contracted.$range().$begin_pos(), offset), $rb_plus(contracted.$range().$end_pos(), offset));
           self.$check_range_validity(merge_effective_range);
           merge_with = contracted.$moved(self.source_buffer, offset);
           self.action_root = self.action_root.$combine(merge_with);
           return self;
-        }, $TreeRewriter_import$excl$6.$$arity = -2);
+        }, -2);
         
-        Opal.def(self, '$replace', $TreeRewriter_replace$7 = function $$replace(range, content) {
+        $def(self, '$replace', function $$replace(range, content) {
           var self = this;
 
           return self.$combine(range, $hash2(["replacement"], {"replacement": content}))
-        }, $TreeRewriter_replace$7.$$arity = 2);
+        }, 2);
         
-        Opal.def(self, '$wrap', $TreeRewriter_wrap$8 = function $$wrap(range, insert_before, insert_after) {
+        $def(self, '$wrap', function $$wrap(range, insert_before, insert_after) {
           var self = this;
 
           return self.$combine(range, $hash2(["insert_before", "insert_after"], {"insert_before": insert_before.$to_s(), "insert_after": insert_after.$to_s()}))
-        }, $TreeRewriter_wrap$8.$$arity = 3);
+        }, 3);
         
-        Opal.def(self, '$remove', $TreeRewriter_remove$9 = function $$remove(range) {
+        $def(self, '$remove', function $$remove(range) {
           var self = this;
 
           return self.$replace(range, "".$freeze())
-        }, $TreeRewriter_remove$9.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$insert_before', $TreeRewriter_insert_before$10 = function $$insert_before(range, content) {
+        $def(self, '$insert_before', function $$insert_before(range, content) {
           var self = this;
 
           return self.$wrap(range, content, nil)
-        }, $TreeRewriter_insert_before$10.$$arity = 2);
+        }, 2);
         
-        Opal.def(self, '$insert_after', $TreeRewriter_insert_after$11 = function $$insert_after(range, content) {
+        $def(self, '$insert_after', function $$insert_after(range, content) {
           var self = this;
 
           return self.$wrap(range, nil, content)
-        }, $TreeRewriter_insert_after$11.$$arity = 2);
+        }, 2);
         
-        Opal.def(self, '$process', $TreeRewriter_process$12 = function $$process() {
-          var $$13, self = this, source = nil, chunks = nil, last_end = nil;
+        $def(self, '$process', function $$process() {
+          var self = this, source = nil, chunks = nil, last_end = nil;
 
           
           source = self.source_buffer.$source();
           chunks = [];
           last_end = 0;
-          $send(self.action_root.$ordered_replacements(), 'each', [], ($$13 = function(range, replacement){var self = $$13.$$s == null ? this : $$13.$$s;
-
+          $send(self.action_root.$ordered_replacements(), 'each', [], function $$5(range, replacement){
             
             
-            if (range == null) {
-              range = nil;
-            };
+            if (range == null) range = nil;;
             
-            if (replacement == null) {
-              replacement = nil;
-            };
+            if (replacement == null) replacement = nil;;
             chunks['$<<'](source['$[]'](Opal.Range.$new(last_end,range.$begin_pos(), true)))['$<<'](replacement);
-            return (last_end = range.$end_pos());}, $$13.$$s = self, $$13.$$arity = 2, $$13));
+            return (last_end = range.$end_pos());}, 2);
           chunks['$<<'](source['$[]'](Opal.Range.$new(last_end,source.$length(), true)));
           return chunks.$join();
-        }, $TreeRewriter_process$12.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$as_replacements', $TreeRewriter_as_replacements$14 = function $$as_replacements() {
+        $def(self, '$as_replacements', function $$as_replacements() {
           var self = this;
 
           return self.action_root.$ordered_replacements()
-        }, $TreeRewriter_as_replacements$14.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$as_nested_actions', $TreeRewriter_as_nested_actions$15 = function $$as_nested_actions() {
+        $def(self, '$as_nested_actions', function $$as_nested_actions() {
           var self = this;
 
           return self.action_root.$nested_actions()
-        }, $TreeRewriter_as_nested_actions$15.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$transaction', $TreeRewriter_transaction$16 = function $$transaction() {
-          var $iter = $TreeRewriter_transaction$16.$$p, $yield = $iter || nil, self = this, previous = nil, restore_root = nil;
+        $def(self, '$transaction', function $$transaction() {
+          var $yield = $$transaction.$$p || nil, self = this, previous = nil, restore_root = nil;
 
-          if ($iter) $TreeRewriter_transaction$16.$$p = null;
+          delete $$transaction.$$p;
           return (function() { try {
           
-          if (($yield !== nil)) {
-          } else {
+          if (!($yield !== nil)) {
             self.$raise("" + (self.$class()) + "#" + ("transaction") + " requires block")
           };
           previous = self.in_transaction;
@@ -6529,130 +5570,123 @@ Opal.modules["parser/source/tree_rewriter"] = function(Opal) {
           restore_root = nil;
           return self;
           } finally {
-            ((function() {if ($truthy(restore_root)) {
-              return (self.action_root = restore_root)
-            } else {
-              return nil
-            }; return nil; })(), (self.in_transaction = previous))
+            (($truthy(restore_root) ? ((self.action_root = restore_root)) : nil), (self.in_transaction = previous))
           }; })()
-        }, $TreeRewriter_transaction$16.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$in_transaction?', $TreeRewriter_in_transaction$ques$17 = function() {
+        $def(self, '$in_transaction?', function $TreeRewriter_in_transaction$ques$6() {
           var self = this;
 
           return self.in_transaction
-        }, $TreeRewriter_in_transaction$ques$17.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$inspect', $TreeRewriter_inspect$18 = function $$inspect() {
+        $def(self, '$inspect', function $$inspect() {
           var self = this;
 
-          return "" + "#<" + (self.$class()) + " " + (self.$source_buffer().$name()) + ": " + (self.$action_summary()) + ">"
-        }, $TreeRewriter_inspect$18.$$arity = 0);
+          return "#<" + (self.$class()) + " " + (self.$source_buffer().$name()) + ": " + (self.$action_summary()) + ">"
+        }, 0);
         
-        Opal.def(self, '$insert_before_multi', $TreeRewriter_insert_before_multi$19 = function $$insert_before_multi(range, text) {
+        $def(self, '$insert_before_multi', function $$insert_before_multi(range, text) {
           var self = this;
 
           
           self.$class().$warn_of_deprecation();
           return self.$insert_before(range, text);
-        }, $TreeRewriter_insert_before_multi$19.$$arity = 2);
+        }, 2);
         
-        Opal.def(self, '$insert_after_multi', $TreeRewriter_insert_after_multi$20 = function $$insert_after_multi(range, text) {
+        $def(self, '$insert_after_multi', function $$insert_after_multi(range, text) {
           var self = this;
 
           
           self.$class().$warn_of_deprecation();
           return self.$insert_after(range, text);
-        }, $TreeRewriter_insert_after_multi$20.$$arity = 2);
-        Opal.const_set($nesting[0], 'DEPRECATION_WARNING', ["TreeRewriter#insert_before_multi and insert_before_multi exist only for legacy compatibility.", "Please update your code to use `wrap`, `insert_before` or `insert_after` instead."].$join("\n").$freeze());
-        self.$extend($$($nesting, 'Deprecation'));
+        }, 2);
+        $const_set($nesting[0], 'DEPRECATION_WARNING', ["TreeRewriter#insert_before_multi and insert_before_multi exist only for legacy compatibility.", "Please update your code to use `wrap`, `insert_before` or `insert_after` instead."].$join("\n").$freeze());
+        self.$extend($$('Deprecation'));
         self.$protected();
         self.$attr_reader("action_root");
         self.$private();
         
-        Opal.def(self, '$action_summary', $TreeRewriter_action_summary$21 = function $$action_summary() {
-          var $$22, self = this, replacements = nil, $case = nil, suffix = nil, parts = nil;
+        $def(self, '$action_summary', function $$action_summary() {
+          var self = this, replacements = nil, $ret_or_1 = nil, suffix = nil, parts = nil;
 
           
           replacements = self.$as_replacements();
-          $case = replacements.$size();
-          if ((0)['$===']($case)) {return "empty"}
-          else if ($range(1, 3, false)['$===']($case)) {nil}
-          else {
-          replacements = replacements.$first(3);
-          suffix = "…";};
-          parts = $send(replacements, 'map', [], ($$22 = function($mlhs_tmp1){var self = $$22.$$s == null ? this : $$22.$$s, $a, $b, range = nil, str = nil;
+          if ($eqeqeq(0, ($ret_or_1 = replacements.$size()))) {
+            return "empty"
+          } else if (!$eqeqeq($range(1, 3, false), $ret_or_1)) {
+            
+            replacements = replacements.$first(3);
+            suffix = "…";
+          };
+          parts = $send(replacements, 'map', [], function $$7($mlhs_tmp1){var $a, $b, range = nil, str = nil;
 
             
             
-            if ($mlhs_tmp1 == null) {
-              $mlhs_tmp1 = nil;
-            };
-            $b = $mlhs_tmp1, $a = Opal.to_ary($b), (range = ($a[0] == null ? nil : $a[0])), (str = ($a[1] == null ? nil : $a[1])), $b;
+            if ($mlhs_tmp1 == null) $mlhs_tmp1 = nil;;
+            $b = $mlhs_tmp1, $a = $to_ary($b), (range = ($a[0] == null ? nil : $a[0])), (str = ($a[1] == null ? nil : $a[1])), $b;
             if ($truthy(str['$empty?']())) {
-              return "" + "-" + (range.$to_range())
-            } else if (range.$size()['$=='](0)) {
-              return "" + "+" + (str.$inspect()) + "@" + (range.$begin_pos())
+              return "-" + (range.$to_range())
+            } else if ($eqeq(range.$size(), 0)) {
+              return "+" + (str.$inspect()) + "@" + (range.$begin_pos())
             } else {
-              return "" + "^" + (str.$inspect()) + "@" + (range.$to_range())
-            };}, $$22.$$s = self, $$22.$$arity = 1, $$22.$$has_top_level_mlhs_arg = true, $$22));
+              return "^" + (str.$inspect()) + "@" + (range.$to_range())
+            };}, {$$arity: 1, $$has_top_level_mlhs_arg: true});
           if ($truthy(suffix)) {
-            parts['$<<'](suffix)};
+            parts['$<<'](suffix)
+          };
           return parts.$join(", ");
-        }, $TreeRewriter_action_summary$21.$$arity = 0);
-        Opal.const_set($nesting[0], 'ACTIONS', ["accept", "warn", "raise"].$freeze());
+        }, 0);
+        $const_set($nesting[0], 'ACTIONS', ["accept", "warn", "raise"].$freeze());
         
-        Opal.def(self, '$check_policy_validity', $TreeRewriter_check_policy_validity$23 = function $$check_policy_validity() {
+        $def(self, '$check_policy_validity', function $$check_policy_validity() {
           var self = this, invalid = nil;
 
           
-          invalid = $rb_minus(self.policy.$values(), $$($nesting, 'ACTIONS'));
+          invalid = $rb_minus(self.policy.$values(), $$('ACTIONS'));
           if ($truthy(invalid['$empty?']())) {
             return nil
           } else {
-            return self.$raise($$($nesting, 'ArgumentError'), "" + "Invalid policy: " + (invalid.$join(", ")))
+            return self.$raise($$('ArgumentError'), "Invalid policy: " + (invalid.$join(", ")))
           };
-        }, $TreeRewriter_check_policy_validity$23.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$combine', $TreeRewriter_combine$24 = function $$combine(range, attributes) {
+        $def(self, '$combine', function $$combine(range, attributes) {
           var self = this, action = nil;
 
           
           range = self.$check_range_validity(range);
-          action = $$$($$($nesting, 'TreeRewriter'), 'Action').$new(range, self.enforcer, Opal.to_hash(attributes));
+          action = $$$($$('TreeRewriter'), 'Action').$new(range, self.enforcer, Opal.to_hash(attributes));
           self.action_root = self.action_root.$combine(action);
           return self;
-        }, $TreeRewriter_combine$24.$$arity = 2);
+        }, 2);
         
-        Opal.def(self, '$check_range_validity', $TreeRewriter_check_range_validity$25 = function $$check_range_validity(range) {
-          var self = this, $ret_or_1 = nil;
+        $def(self, '$check_range_validity', function $$check_range_validity(range) {
+          var self = this;
 
           
-          if ($truthy((function() {if ($truthy(($ret_or_1 = $rb_lt(range.$begin_pos(), 0)))) {
-            return $ret_or_1
-          } else {
-            return $rb_gt(range.$end_pos(), self.source_buffer.$source().$size())
-          }; return nil; })())) {
-            self.$raise($$($nesting, 'IndexError'), "" + "The range " + (range.$to_range()) + " is outside the bounds of the source")};
+          if (($truthy($rb_lt(range.$begin_pos(), 0)) || ($truthy($rb_gt(range.$end_pos(), self.source_buffer.$source().$size()))))) {
+            self.$raise($$('IndexError'), "The range " + (range.$to_range()) + " is outside the bounds of the source")
+          };
           return range;
-        }, $TreeRewriter_check_range_validity$25.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$enforce_policy', $TreeRewriter_enforce_policy$26 = function $$enforce_policy(event) {
-          var $iter = $TreeRewriter_enforce_policy$26.$$p, $yield = $iter || nil, self = this, values = nil;
+        $def(self, '$enforce_policy', function $$enforce_policy(event) {
+          var $yield = $$enforce_policy.$$p || nil, self = this, values = nil;
 
-          if ($iter) $TreeRewriter_enforce_policy$26.$$p = null;
+          delete $$enforce_policy.$$p;
           
-          if (self.policy['$[]'](event)['$==']("accept")) {
-            return nil};
-          if ($truthy((values = Opal.yieldX($yield, [])))) {
-          } else {
+          if ($eqeq(self.policy['$[]'](event), "accept")) {
+            return nil
+          };
+          if (!$truthy((values = Opal.yieldX($yield, [])))) {
             return nil
           };
           return self.$trigger_policy(event, Opal.to_hash(values));
-        }, $TreeRewriter_enforce_policy$26.$$arity = 1);
-        Opal.const_set($nesting[0], 'POLICY_TO_LEVEL', $hash2(["warn", "raise"], {"warn": "warning", "raise": "error"}).$freeze());
-        return (Opal.def(self, '$trigger_policy', $TreeRewriter_trigger_policy$27 = function $$trigger_policy(event, $kwargs) {
-          var range, conflict, arguments$, $a, $b, self = this, action = nil, $ret_or_2 = nil, diag = nil, highlights = nil;
+        }, 1);
+        $const_set($nesting[0], 'POLICY_TO_LEVEL', $hash2(["warn", "raise"], {"warn": "warning", "raise": "error"}).$freeze());
+        return $def(self, '$trigger_policy', function $$trigger_policy(event, $kwargs) {
+          var range, conflict, arguments$, $a, $b, self = this, action = nil, $ret_or_1 = nil, diag = nil, highlights = nil;
 
           
           
@@ -6663,62 +5697,36 @@ Opal.modules["parser/source/tree_rewriter"] = function(Opal) {
           };
           
           range = $kwargs.$$smap["range"];
-          if (range == null) {
-            range = self.$raise()
-          };
+          if (range == null) range = self.$raise();
           
           conflict = $kwargs.$$smap["conflict"];
-          if (conflict == null) {
-            conflict = nil
-          };
+          if (conflict == null) conflict = nil;
           
           arguments$ = Opal.kwrestargs($kwargs, {'range': true,'conflict': true});;
-          action = (function() {if ($truthy(($ret_or_2 = self.policy['$[]'](event)))) {
-            return $ret_or_2
-          } else {
-            return "raise"
-          }; return nil; })();
-          diag = $$$($$($nesting, 'Parser'), 'Diagnostic').$new($$($nesting, 'POLICY_TO_LEVEL')['$[]'](action), event, arguments$, range);
+          action = ($truthy(($ret_or_1 = self.policy['$[]'](event))) ? ($ret_or_1) : ("raise"));
+          diag = $$$($$('Parser'), 'Diagnostic').$new($$('POLICY_TO_LEVEL')['$[]'](action), event, arguments$, range);
           self.diagnostics.$process(diag);
           if ($truthy(conflict)) {
             
-            $b = conflict, $a = Opal.to_ary($b), (range = ($a[0] == null ? nil : $a[0])), (highlights = $slice.call($a, 1)), $b;
-            diag = $$$($$($nesting, 'Parser'), 'Diagnostic').$new($$($nesting, 'POLICY_TO_LEVEL')['$[]'](action), "" + (event) + "_conflict", arguments$, range, highlights);
-            self.diagnostics.$process(diag);};
-          if (action['$==']("raise")) {
-            return self.$raise($$$($$($nesting, 'Parser'), 'ClobberingError'), "Parser::Source::TreeRewriter detected clobbering")
+            $b = conflict, $a = $to_ary($b), (range = ($a[0] == null ? nil : $a[0])), (highlights = $slice.call($a, 1)), $b;
+            diag = $$$($$('Parser'), 'Diagnostic').$new($$('POLICY_TO_LEVEL')['$[]'](action), "" + (event) + "_conflict", arguments$, range, highlights);
+            self.diagnostics.$process(diag);
+          };
+          if ($eqeq(action, "raise")) {
+            return self.$raise($$$($$('Parser'), 'ClobberingError'), "Parser::Source::TreeRewriter detected clobbering")
           } else {
             return nil
           };
-        }, $TreeRewriter_trigger_policy$27.$$arity = -2), nil) && 'trigger_policy';
+        }, -2);
       })($nesting[0], null, $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/tree_rewriter/action"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_ge(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs >= rhs : lhs['$>='](rhs);
-  }
-  function $rb_le(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs <= rhs : lhs['$<='](rhs);
-  }
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $hash2 = Opal.hash2, $truthy = Opal.truthy, $send = Opal.send;
-
-  Opal.add_stubs(['$attr_reader', '$freeze', '$empty?', '$do_combine', '$==', '$<<', '$begin', '$concat', '$flat_map', '$to_proc', '$end', '$!', '$insert_before', '$insert_after', '$replacement', '$raise', '$insertion?', '$with', '$begin_pos', '$range', '$first', '$children', '$end_pos', '$last', '$new', '$+', '$map', '$moved', '$protected', '$swallow', '$class', '$merge', '$place_in_hierarchy', '$analyse_hierarchy', '$[]', '$fuse_deletions', '$combine_children', '$inject', '$size', '$bsearch', '$bsearch_child_index', '$>', '$-', '$>=', '$===', '$<=>', '$<=', '$check_fusible', '$<', '$shift', '$pop', '$compact!', '$each', '$call', '$call_enforcer_for_merge', '$!=', '$select']);
+Opal.modules["parser/source/tree_rewriter/action"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $hash2 = Opal.hash2, $def = Opal.def, $truthy = Opal.truthy, $send = Opal.send, $not = Opal.not, $rb_plus = Opal.rb_plus, $eqeq = Opal.eqeq, $to_a = Opal.to_a, $rb_gt = Opal.rb_gt, $rb_minus = Opal.rb_minus, $rb_ge = Opal.rb_ge, $eqeqeq = Opal.eqeqeq, $rb_le = Opal.rb_le, $rb_lt = Opal.rb_lt, $neqeq = Opal.neqeq;
+
+  Opal.add_stubs('attr_reader,freeze,empty?,do_combine,==,<<,begin,concat,flat_map,to_proc,end,!,insert_before,insert_after,replacement,raise,insertion?,with,begin_pos,range,first,children,end_pos,last,new,+,map,moved,protected,swallow,class,merge,place_in_hierarchy,analyse_hierarchy,[],fuse_deletions,combine_children,inject,size,bsearch,bsearch_child_index,>,-,>=,===,<=>,<=,check_fusible,<,shift,pop,compact!,each,call,call_enforcer_for_merge,!=,select');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -6727,18 +5735,18 @@ Opal.modules["parser/source/tree_rewriter/action"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Source');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'Action');
 
-        var $nesting = [self].concat($parent_nesting), $Action_initialize$1, $Action_combine$2, $Action_empty$ques$3, $Action_ordered_replacements$4, $Action_nested_actions$5, $Action_insertion$ques$6, $Action_contract$7, $Action_moved$8, $Action_with$10, $Action_do_combine$11, $Action_place_in_hierarchy$12, $Action_combine_children$13, $Action_fuse_deletions$15, $Action_bsearch_child_index$16, $Action_analyse_hierarchy$18, $Action_check_fusible$21, $Action_merge$24, $Action_call_enforcer_for_merge$25, $Action_swallow$27;
+        var $proto = self.$$prototype;
 
-        self.$$prototype.insert_before = self.$$prototype.insert_after = self.$$prototype.children = self.$$prototype.replacement = self.$$prototype.range = self.$$prototype.enforcer = nil;
+        $proto.insert_before = $proto.insert_after = $proto.children = $proto.replacement = $proto.range = $proto.enforcer = nil;
         
         self.$attr_reader("range", "replacement", "insert_before", "insert_after");
         
-        Opal.def(self, '$initialize', $Action_initialize$1 = function $$initialize(range, enforcer, $kwargs) {
+        $def(self, '$initialize', function $$initialize(range, enforcer, $kwargs) {
           var insert_before, replacement, insert_after, children, $a, self = this;
 
           
@@ -6750,149 +5758,126 @@ Opal.modules["parser/source/tree_rewriter/action"] = function(Opal) {
           };
           
           insert_before = $kwargs.$$smap["insert_before"];
-          if (insert_before == null) {
-            insert_before = ""
-          };
+          if (insert_before == null) insert_before = "";
           
           replacement = $kwargs.$$smap["replacement"];
-          if (replacement == null) {
-            replacement = nil
-          };
+          if (replacement == null) replacement = nil;
           
           insert_after = $kwargs.$$smap["insert_after"];
-          if (insert_after == null) {
-            insert_after = ""
-          };
+          if (insert_after == null) insert_after = "";
           
           children = $kwargs.$$smap["children"];
-          if (children == null) {
-            children = []
-          };
+          if (children == null) children = [];
           $a = [range, enforcer, children.$freeze(), insert_before.$freeze(), replacement, insert_after.$freeze()], (self.range = $a[0]), (self.enforcer = $a[1]), (self.children = $a[2]), (self.insert_before = $a[3]), (self.replacement = $a[4]), (self.insert_after = $a[5]), $a;
           return self.$freeze();
-        }, $Action_initialize$1.$$arity = -3);
+        }, -3);
         
-        Opal.def(self, '$combine', $Action_combine$2 = function $$combine(action) {
+        $def(self, '$combine', function $$combine(action) {
           var self = this;
 
           
           if ($truthy(action['$empty?']())) {
-            return self};
+            return self
+          };
           return self.$do_combine(action);
-        }, $Action_combine$2.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$empty?', $Action_empty$ques$3 = function() {
-          var self = this, $ret_or_1 = nil, $ret_or_2 = nil, $ret_or_3 = nil, $ret_or_4 = nil, $ret_or_5 = nil;
+        $def(self, '$empty?', function $Action_empty$ques$1() {
+          var self = this, $ret_or_1 = nil, $ret_or_2 = nil, $ret_or_3 = nil;
 
-          if ($truthy(($ret_or_1 = (function() {if ($truthy(($ret_or_2 = (function() {if ($truthy(($ret_or_3 = self.insert_before['$empty?']()))) {
-            return self.insert_after['$empty?']()
-          } else {
-            return $ret_or_3
-          }; return nil; })()))) {
-            return self.children['$empty?']()
-          } else {
-            return $ret_or_2
-          }; return nil; })()))) {
+          if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = ($truthy(($ret_or_3 = self.insert_before['$empty?']())) ? (self.insert_after['$empty?']()) : ($ret_or_3)))) ? (self.children['$empty?']()) : ($ret_or_2))))) {
             
-            if ($truthy(($ret_or_4 = self.replacement['$=='](nil)))) {
-              return $ret_or_4
+            if ($truthy(($ret_or_2 = self.replacement['$=='](nil)))) {
+              return $ret_or_2
             } else {
               
-              if ($truthy(($ret_or_5 = self.replacement['$empty?']()))) {
+              if ($truthy(($ret_or_3 = self.replacement['$empty?']()))) {
                 return self.range['$empty?']()
               } else {
-                return $ret_or_5
+                return $ret_or_3
               };
             };
           } else {
             return $ret_or_1
           }
-        }, $Action_empty$ques$3.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$ordered_replacements', $Action_ordered_replacements$4 = function $$ordered_replacements() {
+        $def(self, '$ordered_replacements', function $$ordered_replacements() {
           var self = this, reps = nil;
 
           
           reps = [];
-          if ($truthy(self.insert_before['$empty?']())) {
-          } else {
+          if (!$truthy(self.insert_before['$empty?']())) {
             reps['$<<']([self.range.$begin(), self.insert_before])
           };
           if ($truthy(self.replacement)) {
-            reps['$<<']([self.range, self.replacement])};
+            reps['$<<']([self.range, self.replacement])
+          };
           reps.$concat($send(self.children, 'flat_map', [], "ordered_replacements".$to_proc()));
-          if ($truthy(self.insert_after['$empty?']())) {
-          } else {
+          if (!$truthy(self.insert_after['$empty?']())) {
             reps['$<<']([self.range.$end(), self.insert_after])
           };
           return reps;
-        }, $Action_ordered_replacements$4.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$nested_actions', $Action_nested_actions$5 = function $$nested_actions() {
-          var self = this, actions = nil, $ret_or_6 = nil;
+        $def(self, '$nested_actions', function $$nested_actions() {
+          var self = this, actions = nil;
 
           
           actions = [];
-          if ($truthy((function() {if ($truthy(($ret_or_6 = self.insert_before['$empty?']()['$!']()))) {
-            return $ret_or_6
-          } else {
-            return self.insert_after['$empty?']()['$!']()
-          }; return nil; })())) {
-            actions['$<<'](["wrap", self.range, self.insert_before, self.insert_after])};
+          if (($not(self.insert_before['$empty?']()) || ($not(self.insert_after['$empty?']())))) {
+            actions['$<<'](["wrap", self.range, self.insert_before, self.insert_after])
+          };
           if ($truthy(self.replacement)) {
-            actions['$<<'](["replace", self.range, self.replacement])};
+            actions['$<<'](["replace", self.range, self.replacement])
+          };
           return actions.$concat($send(self.children, 'flat_map', [], "nested_actions".$to_proc()));
-        }, $Action_nested_actions$5.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$insertion?', $Action_insertion$ques$6 = function() {
-          var self = this, $ret_or_7 = nil, $ret_or_8 = nil, $ret_or_9 = nil;
+        $def(self, '$insertion?', function $Action_insertion$ques$2() {
+          var self = this, $ret_or_1 = nil, $ret_or_2 = nil;
 
-          if ($truthy(($ret_or_7 = (function() {if ($truthy(($ret_or_8 = self.$insert_before()['$empty?']()['$!']()))) {
-            return $ret_or_8
-          } else {
-            return self.$insert_after()['$empty?']()['$!']()
-          }; return nil; })()))) {
-            return $ret_or_7
+          if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = self.$insert_before()['$empty?']()['$!']())) ? ($ret_or_2) : (self.$insert_after()['$empty?']()['$!']()))))) {
+            return $ret_or_1
           } else {
             
-            if ($truthy(($ret_or_9 = self.$replacement()))) {
+            if ($truthy(($ret_or_2 = self.$replacement()))) {
               return self.$replacement()['$empty?']()['$!']()
             } else {
-              return $ret_or_9
+              return $ret_or_2
             };
           }
-        }, $Action_insertion$ques$6.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$contract', $Action_contract$7 = function $$contract() {
+        $def(self, '$contract', function $$contract() {
           var self = this, range = nil;
 
           
           if ($truthy(self['$empty?']())) {
-            self.$raise("Empty actions can not be contracted")};
+            self.$raise("Empty actions can not be contracted")
+          };
           if ($truthy(self['$insertion?']())) {
-            return self};
+            return self
+          };
           range = self.range.$with($hash2(["begin_pos", "end_pos"], {"begin_pos": self.$children().$first().$range().$begin_pos(), "end_pos": self.$children().$last().$range().$end_pos()}));
           return self.$with($hash2(["range"], {"range": range}));
-        }, $Action_contract$7.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$moved', $Action_moved$8 = function $$moved(source_buffer, offset) {
-          var $$9, self = this, moved_range = nil;
+        $def(self, '$moved', function $$moved(source_buffer, offset) {
+          var self = this, moved_range = nil;
 
           
-          moved_range = $$$($$$($$$('::', 'Parser'), 'Source'), 'Range').$new(source_buffer, $rb_plus(self.range.$begin_pos(), offset), $rb_plus(self.range.$end_pos(), offset));
-          return self.$with($hash2(["range", "children"], {"range": moved_range, "children": $send(self.$children(), 'map', [], ($$9 = function(child){var self = $$9.$$s == null ? this : $$9.$$s;
-
+          moved_range = $$$($$$($$$('Parser'), 'Source'), 'Range').$new(source_buffer, $rb_plus(self.range.$begin_pos(), offset), $rb_plus(self.range.$end_pos(), offset));
+          return self.$with($hash2(["range", "children"], {"range": moved_range, "children": $send(self.$children(), 'map', [], function $$3(child){
             
             
-            if (child == null) {
-              child = nil;
-            };
-            return child.$moved(source_buffer, offset);}, $$9.$$s = self, $$9.$$arity = 1, $$9))}));
-        }, $Action_moved$8.$$arity = 2);
+            if (child == null) child = nil;;
+            return child.$moved(source_buffer, offset);}, 1)}));
+        }, 2);
         self.$protected();
         self.$attr_reader("children");
         
-        Opal.def(self, '$with', $Action_with$10 = function($kwargs) {
+        $def(self, '$with', function $Action_with$4($kwargs) {
           var range, enforcer, children, insert_before, replacement, insert_after, self = this;
 
           
@@ -6904,255 +5889,184 @@ Opal.modules["parser/source/tree_rewriter/action"] = function(Opal) {
           };
           
           range = $kwargs.$$smap["range"];
-          if (range == null) {
-            range = self.range
-          };
+          if (range == null) range = self.range;
           
           enforcer = $kwargs.$$smap["enforcer"];
-          if (enforcer == null) {
-            enforcer = self.enforcer
-          };
+          if (enforcer == null) enforcer = self.enforcer;
           
           children = $kwargs.$$smap["children"];
-          if (children == null) {
-            children = self.children
-          };
+          if (children == null) children = self.children;
           
           insert_before = $kwargs.$$smap["insert_before"];
-          if (insert_before == null) {
-            insert_before = self.insert_before
-          };
+          if (insert_before == null) insert_before = self.insert_before;
           
           replacement = $kwargs.$$smap["replacement"];
-          if (replacement == null) {
-            replacement = self.replacement
-          };
+          if (replacement == null) replacement = self.replacement;
           
           insert_after = $kwargs.$$smap["insert_after"];
-          if (insert_after == null) {
-            insert_after = self.insert_after
-          };
+          if (insert_after == null) insert_after = self.insert_after;
           if ($truthy(replacement)) {
-            children = self.$swallow(children)};
+            children = self.$swallow(children)
+          };
           return self.$class().$new(range, enforcer, $hash2(["children", "insert_before", "replacement", "insert_after"], {"children": children, "insert_before": insert_before, "replacement": replacement, "insert_after": insert_after}));
-        }, $Action_with$10.$$arity = -1);
+        }, -1);
         
-        Opal.def(self, '$do_combine', $Action_do_combine$11 = function $$do_combine(action) {
+        $def(self, '$do_combine', function $$do_combine(action) {
           var self = this;
 
-          if (action.$range()['$=='](self.range)) {
+          if ($eqeq(action.$range(), self.range)) {
             return self.$merge(action)
           } else {
             return self.$place_in_hierarchy(action)
           }
-        }, $Action_do_combine$11.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$place_in_hierarchy', $Action_place_in_hierarchy$12 = function $$place_in_hierarchy(action) {
+        $def(self, '$place_in_hierarchy', function $$place_in_hierarchy(action) {
           var self = this, family = nil, extra_sibbling = nil;
 
           
           family = self.$analyse_hierarchy(action);
           if ($truthy(family['$[]']("fusible"))) {
-            return self.$fuse_deletions(action, family['$[]']("fusible"), [].concat(Opal.to_a(family['$[]']("sibbling_left"))).concat(Opal.to_a(family['$[]']("child"))).concat(Opal.to_a(family['$[]']("sibbling_right"))))
+            return self.$fuse_deletions(action, family['$[]']("fusible"), [].concat($to_a(family['$[]']("sibbling_left"))).concat($to_a(family['$[]']("child"))).concat($to_a(family['$[]']("sibbling_right"))))
           } else {
             
-            extra_sibbling = (function() {if ($truthy(family['$[]']("parent"))) {
-              return family['$[]']("parent").$do_combine(action)
-            } else if ($truthy(family['$[]']("child"))) {
-              return action.$with($hash2(["children", "enforcer"], {"children": family['$[]']("child"), "enforcer": self.enforcer})).$combine_children(action.$children())
-            } else {
-              return action
-            }; return nil; })();
-            return self.$with($hash2(["children"], {"children": [].concat(Opal.to_a(family['$[]']("sibbling_left"))).concat([extra_sibbling]).concat(Opal.to_a(family['$[]']("sibbling_right")))}));
+            extra_sibbling = ($truthy(family['$[]']("parent")) ? (family['$[]']("parent").$do_combine(action)) : ($truthy(family['$[]']("child")) ? (action.$with($hash2(["children", "enforcer"], {"children": family['$[]']("child"), "enforcer": self.enforcer})).$combine_children(action.$children())) : (action)));
+            return self.$with($hash2(["children"], {"children": [].concat($to_a(family['$[]']("sibbling_left"))).concat([extra_sibbling]).concat($to_a(family['$[]']("sibbling_right")))}));
           };
-        }, $Action_place_in_hierarchy$12.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$combine_children', $Action_combine_children$13 = function $$combine_children(more_children) {
-          var $$14, self = this;
-
-          return $send(more_children, 'inject', [self], ($$14 = function(parent, new_child){var self = $$14.$$s == null ? this : $$14.$$s;
+        $def(self, '$combine_children', function $$combine_children(more_children) {
+          var self = this;
 
+          return $send(more_children, 'inject', [self], function $$5(parent, new_child){
             
             
-            if (parent == null) {
-              parent = nil;
-            };
+            if (parent == null) parent = nil;;
             
-            if (new_child == null) {
-              new_child = nil;
-            };
-            return parent.$place_in_hierarchy(new_child);}, $$14.$$s = self, $$14.$$arity = 2, $$14))
-        }, $Action_combine_children$13.$$arity = 1);
+            if (new_child == null) new_child = nil;;
+            return parent.$place_in_hierarchy(new_child);}, 2)
+        }, 1);
         
-        Opal.def(self, '$fuse_deletions', $Action_fuse_deletions$15 = function $$fuse_deletions(action, fusible, other_sibblings) {
+        $def(self, '$fuse_deletions', function $$fuse_deletions(action, fusible, other_sibblings) {
           var self = this, without_fusible = nil, fused_range = nil, fused_deletion = nil;
 
           
           without_fusible = self.$with($hash2(["children"], {"children": other_sibblings}));
-          fused_range = $send([action].concat(Opal.to_a(fusible)), 'map', [], "range".$to_proc()).$inject("join");
+          fused_range = $send([action].concat($to_a(fusible)), 'map', [], "range".$to_proc()).$inject("join");
           fused_deletion = action.$with($hash2(["range"], {"range": fused_range}));
           return without_fusible.$do_combine(fused_deletion);
-        }, $Action_fuse_deletions$15.$$arity = 3);
+        }, 3);
         
-        Opal.def(self, '$bsearch_child_index', $Action_bsearch_child_index$16 = function $$bsearch_child_index(from) {
-          var $$17, $iter = $Action_bsearch_child_index$16.$$p, $yield = $iter || nil, self = this, size = nil, $ret_or_10 = nil;
+        $def(self, '$bsearch_child_index', function $$bsearch_child_index(from) {
+          var $yield = $$bsearch_child_index.$$p || nil, self = this, size = nil, $ret_or_1 = nil;
 
-          if ($iter) $Action_bsearch_child_index$16.$$p = null;
+          delete $$bsearch_child_index.$$p;
           
           
-          if (from == null) {
-            from = 0;
-          };
+          if (from == null) from = 0;;
           size = self.children.$size();
-          if ($truthy(($ret_or_10 = $send(Opal.Range.$new(from,size, true), 'bsearch', [], ($$17 = function(i){var self = $$17.$$s == null ? this : $$17.$$s;
+          if ($truthy(($ret_or_1 = $send(Opal.Range.$new(from,size, true), 'bsearch', [], function $$6(i){var self = $$6.$$s == null ? this : $$6.$$s;
             if (self.children == null) self.children = nil;
 
             
             
-            if (i == null) {
-              i = nil;
-            };
-            return Opal.yield1($yield, self.children['$[]'](i));;}, $$17.$$s = self, $$17.$$arity = 1, $$17))))) {
-            return $ret_or_10
+            if (i == null) i = nil;;
+            return Opal.yield1($yield, self.children['$[]'](i));;}, {$$arity: 1, $$s: self})))) {
+            return $ret_or_1
           } else {
             return size
           };
-        }, $Action_bsearch_child_index$16.$$arity = -1);
+        }, -1);
         
-        Opal.def(self, '$analyse_hierarchy', $Action_analyse_hierarchy$18 = function $$analyse_hierarchy(action) {
-          var $$19, $$20, self = this, r = nil, left_index = nil, start = nil, right_index = nil, center = nil, $case = nil, parent = nil, overlap_left = nil, overlap_right = nil, $ret_or_11 = nil, $ret_or_12 = nil, contained = nil, fusible = nil;
+        $def(self, '$analyse_hierarchy', function $$analyse_hierarchy(action) {
+          var self = this, r = nil, left_index = nil, start = nil, right_index = nil, center = nil, $ret_or_1 = nil, parent = nil, overlap_left = nil, overlap_right = nil, contained = nil, fusible = nil;
 
           
           r = action.$range();
-          left_index = $send(self, 'bsearch_child_index', [], ($$19 = function(child){var self = $$19.$$s == null ? this : $$19.$$s;
-
+          left_index = $send(self, 'bsearch_child_index', [], function $$7(child){
             
             
-            if (child == null) {
-              child = nil;
-            };
-            return $rb_gt(child.$range().$end_pos(), r.$begin_pos());}, $$19.$$s = self, $$19.$$arity = 1, $$19));
-          start = (function() {if (left_index['$=='](0)) {
-            return 0
-          } else {
-            return $rb_minus(left_index, 1)
-          }; return nil; })();
-          right_index = $send(self, 'bsearch_child_index', [start], ($$20 = function(child){var self = $$20.$$s == null ? this : $$20.$$s;
-
+            if (child == null) child = nil;;
+            return $rb_gt(child.$range().$end_pos(), r.$begin_pos());}, 1);
+          start = ($eqeq(left_index, 0) ? (0) : ($rb_minus(left_index, 1)));
+          right_index = $send(self, 'bsearch_child_index', [start], function $$8(child){
             
             
-            if (child == null) {
-              child = nil;
-            };
-            return $rb_ge(child.$range().$begin_pos(), r.$end_pos());}, $$20.$$s = self, $$20.$$arity = 1, $$20));
+            if (child == null) child = nil;;
+            return $rb_ge(child.$range().$begin_pos(), r.$end_pos());}, 1);
           center = $rb_minus(right_index, left_index);
-          $case = center;
-          if ((0)['$===']($case)) {nil}
-          else if ((-1)['$===']($case)) {
-          left_index = $rb_minus(left_index, 1);
-          right_index = $rb_plus(right_index, 1);
-          parent = self.children['$[]'](left_index);}
-          else {
-          overlap_left = self.children['$[]'](left_index).$range().$begin_pos()['$<=>'](r.$begin_pos());
-          overlap_right = self.children['$[]']($rb_minus(right_index, 1)).$range().$end_pos()['$<=>'](r.$end_pos());
-          if ($truthy((function() {if ($truthy(($ret_or_11 = (function() {if ($truthy(($ret_or_12 = center['$=='](1)))) {
-            return $rb_le(overlap_left, 0)
-          } else {
-            return $ret_or_12
-          }; return nil; })()))) {
-            return $rb_ge(overlap_right, 0)
-          } else {
-            return $ret_or_11
-          }; return nil; })())) {
-            parent = self.children['$[]'](left_index)
-          } else {
-            
-            contained = self.children['$[]'](Opal.Range.$new(left_index,right_index, true));
-            fusible = self.$check_fusible(action, (function() {if ($truthy($rb_lt(overlap_left, 0))) {
-              return contained.$shift()
-            } else {
-              return nil
-            }; return nil; })(), (function() {if ($truthy($rb_gt(overlap_right, 0))) {
-              return contained.$pop()
+          if (!$eqeqeq(0, ($ret_or_1 = center))) {
+            if ($eqeqeq(-1, $ret_or_1)) {
+              
+              left_index = $rb_minus(left_index, 1);
+              right_index = $rb_plus(right_index, 1);
+              parent = self.children['$[]'](left_index);
             } else {
-              return nil
-            }; return nil; })());
-          };};
+              
+              overlap_left = self.children['$[]'](left_index).$range().$begin_pos()['$<=>'](r.$begin_pos());
+              overlap_right = self.children['$[]']($rb_minus(right_index, 1)).$range().$end_pos()['$<=>'](r.$end_pos());
+              if ((($eqeq(center, 1) && ($truthy($rb_le(overlap_left, 0)))) && ($truthy($rb_ge(overlap_right, 0))))) {
+                parent = self.children['$[]'](left_index)
+              } else {
+                
+                contained = self.children['$[]'](Opal.Range.$new(left_index,right_index, true));
+                fusible = self.$check_fusible(action, ($truthy($rb_lt(overlap_left, 0)) ? (contained.$shift()) : nil), ($truthy($rb_gt(overlap_right, 0)) ? (contained.$pop()) : nil));
+              };
+            }
+          };
           return $hash2(["parent", "sibbling_left", "sibbling_right", "fusible", "child"], {"parent": parent, "sibbling_left": self.children['$[]'](Opal.Range.$new(0,left_index, true)), "sibbling_right": self.children['$[]'](Opal.Range.$new(right_index,self.children.$size(), true)), "fusible": fusible, "child": contained});
-        }, $Action_analyse_hierarchy$18.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$check_fusible', $Action_check_fusible$21 = function $$check_fusible(action, $a) {
-          var $post_args, fusible, $$22, self = this;
+        $def(self, '$check_fusible', function $$check_fusible(action, $a) {
+          var $post_args, fusible, self = this;
 
           
           
-          $post_args = Opal.slice.call(arguments, 1, arguments.length);
+          $post_args = Opal.slice.call(arguments, 1);
           
           fusible = $post_args;;
           fusible['$compact!']();
           if ($truthy(fusible['$empty?']())) {
-            return nil};
-          $send(fusible, 'each', [], ($$22 = function(child){var self = $$22.$$s == null ? this : $$22.$$s, $$23, kind = nil, $ret_or_13 = nil;
+            return nil
+          };
+          $send(fusible, 'each', [], function $$9(child){var self = $$9.$$s == null ? this : $$9.$$s, kind = nil;
             if (self.enforcer == null) self.enforcer = nil;
 
             
             
-            if (child == null) {
-              child = nil;
-            };
-            kind = (function() {if ($truthy((function() {if ($truthy(($ret_or_13 = action['$insertion?']()))) {
-              return $ret_or_13
-            } else {
-              return child['$insertion?']()
-            }; return nil; })())) {
-              return "crossing_insertions"
-            } else {
-              return "crossing_deletions"
-            }; return nil; })();
-            return $send(self.enforcer, 'call', [kind], ($$23 = function(){var self = $$23.$$s == null ? this : $$23.$$s;
-
-              return $hash2(["range", "conflict"], {"range": action.$range(), "conflict": child.$range()})}, $$23.$$s = self, $$23.$$arity = 0, $$23));}, $$22.$$s = self, $$22.$$arity = 1, $$22));
+            if (child == null) child = nil;;
+            kind = (($truthy(action['$insertion?']()) || ($truthy(child['$insertion?']()))) ? ("crossing_insertions") : ("crossing_deletions"));
+            return $send(self.enforcer, 'call', [kind], function $$10(){
+              return $hash2(["range", "conflict"], {"range": action.$range(), "conflict": child.$range()})}, 0);}, {$$arity: 1, $$s: self});
           return fusible;
-        }, $Action_check_fusible$21.$$arity = -2);
+        }, -2);
         
-        Opal.def(self, '$merge', $Action_merge$24 = function $$merge(action) {
-          var self = this, $ret_or_14 = nil;
+        $def(self, '$merge', function $$merge(action) {
+          var self = this, $ret_or_1 = nil;
 
           
           self.$call_enforcer_for_merge(action);
-          return self.$with($hash2(["insert_before", "replacement", "insert_after"], {"insert_before": "" + (action.$insert_before()) + (self.$insert_before()), "replacement": (function() {if ($truthy(($ret_or_14 = action.$replacement()))) {
-            return $ret_or_14
-          } else {
-            return self.replacement
-          }; return nil; })(), "insert_after": "" + (self.$insert_after()) + (action.$insert_after())})).$combine_children(action.$children());
-        }, $Action_merge$24.$$arity = 1);
+          return self.$with($hash2(["insert_before", "replacement", "insert_after"], {"insert_before": "" + (action.$insert_before()) + (self.$insert_before()), "replacement": ($truthy(($ret_or_1 = action.$replacement())) ? ($ret_or_1) : (self.replacement)), "insert_after": "" + (self.$insert_after()) + (action.$insert_after())})).$combine_children(action.$children());
+        }, 1);
         
-        Opal.def(self, '$call_enforcer_for_merge', $Action_call_enforcer_for_merge$25 = function $$call_enforcer_for_merge(action) {
-          var $$26, self = this;
+        $def(self, '$call_enforcer_for_merge', function $$call_enforcer_for_merge(action) {
+          var self = this;
 
-          return $send(self.enforcer, 'call', ["different_replacements"], ($$26 = function(){var self = $$26.$$s == null ? this : $$26.$$s, $ret_or_15 = nil, $ret_or_16 = nil;
+          return $send(self.enforcer, 'call', ["different_replacements"], function $$11(){var self = $$11.$$s == null ? this : $$11.$$s;
             if (self.replacement == null) self.replacement = nil;
             if (self.range == null) self.range = nil;
 
-            if ($truthy((function() {if ($truthy(($ret_or_15 = (function() {if ($truthy(($ret_or_16 = self.replacement))) {
-              return action.$replacement()
-            } else {
-              return $ret_or_16
-            }; return nil; })()))) {
-              return self.replacement['$!='](action.$replacement())
-            } else {
-              return $ret_or_15
-            }; return nil; })())) {
+            if ((($truthy(self.replacement) && ($truthy(action.$replacement()))) && ($neqeq(self.replacement, action.$replacement())))) {
               return $hash2(["range", "replacement", "other_replacement"], {"range": self.range, "replacement": action.$replacement(), "other_replacement": self.replacement})
             } else {
               return nil
-            }}, $$26.$$s = self, $$26.$$arity = 0, $$26))
-        }, $Action_call_enforcer_for_merge$25.$$arity = 1);
-        return (Opal.def(self, '$swallow', $Action_swallow$27 = function $$swallow(children) {
-          var $$28, self = this;
+            }}, {$$arity: 0, $$s: self})
+        }, 1);
+        return $def(self, '$swallow', function $$swallow(children) {
+          var self = this;
 
           
-          $send(self.enforcer, 'call', ["swallowed_insertions"], ($$28 = function(){var self = $$28.$$s == null ? this : $$28.$$s, insertions = nil;
+          $send(self.enforcer, 'call', ["swallowed_insertions"], function $$12(){var self = $$12.$$s == null ? this : $$12.$$s, insertions = nil;
             if (self.range == null) self.range = nil;
 
             
@@ -7161,22 +6075,18 @@ Opal.modules["parser/source/tree_rewriter/action"] = function(Opal) {
               return nil
             } else {
               return $hash2(["range", "conflict"], {"range": self.range, "conflict": $send(insertions, 'map', [], "range".$to_proc())})
-            };}, $$28.$$s = self, $$28.$$arity = 0, $$28));
+            };}, {$$arity: 0, $$s: self});
           return [];
-        }, $Action_swallow$27.$$arity = 1), nil) && 'swallow';
-      })($$($nesting, 'TreeRewriter'), null, $nesting)
+        }, 1);
+      })($$('TreeRewriter'), null)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/map"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $send = Opal.send, $truthy = Opal.truthy, $hash2 = Opal.hash2, $range = Opal.range;
+Opal.modules["parser/source/map"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $def = Opal.def, $send2 = Opal.send2, $find_super = Opal.find_super, $send = Opal.send, $truthy = Opal.truthy, $hash2 = Opal.hash2, $eqeq = Opal.eqeq, $range = Opal.range, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus;
 
-  Opal.add_stubs(['$attr_reader', '$freeze', '$line', '$alias_method', '$column', '$last_line', '$last_column', '$with', '$update_expression', '$==', '$class', '$reduce', '$map', '$instance_variables', '$instance_variable_get', '$send', '$inject', '$to_sym', '$[]', '$[]=', '$-', '$protected', '$tap', '$dup', '$to_proc']);
+  Opal.add_stubs('attr_reader,freeze,line,alias_method,column,last_line,last_column,with,update_expression,==,class,reduce,map,instance_variables,instance_variable_get,send,inject,to_sym,[],[]=,-,protected,tap,dup,to_proc');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -7187,147 +6097,133 @@ Opal.modules["parser/source/map"] = function(Opal) {
 
       var $nesting = [self].concat($parent_nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'Map');
 
-        var $nesting = [self].concat($parent_nesting), $Map_initialize$1, $Map_initialize_copy$2, $Map_node$eq$3, $Map_line$4, $Map_column$5, $Map_last_line$6, $Map_last_column$7, $Map_with_expression$8, $Map_$eq_eq$10, $Map_to_hash$12, $Map_with$14, $Map_update_expression$15;
+        var $proto = self.$$prototype;
 
-        self.$$prototype.node = self.$$prototype.expression = nil;
+        $proto.node = $proto.expression = nil;
         
         self.$attr_reader("node");
         self.$attr_reader("expression");
         
-        Opal.def(self, '$initialize', $Map_initialize$1 = function $$initialize(expression) {
+        $def(self, '$initialize', function $$initialize(expression) {
           var self = this;
 
           return (self.expression = expression)
-        }, $Map_initialize$1.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$initialize_copy', $Map_initialize_copy$2 = function $$initialize_copy(other) {
-          var $iter = $Map_initialize_copy$2.$$p, $yield = $iter || nil, self = this, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        $def(self, '$initialize_copy', function $$initialize_copy(other) {
+          var $yield = $$initialize_copy.$$p || nil, self = this;
 
-          if ($iter) $Map_initialize_copy$2.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$initialize_copy.$$p;
           
-          $send2(self, $find_super(self, 'initialize_copy', $Map_initialize_copy$2, false, true), 'initialize_copy', $zuper, $iter);
+          $send2(self, $find_super(self, 'initialize_copy', $$initialize_copy, false, true), 'initialize_copy', [other], $yield);
           return (self.node = nil);
-        }, $Map_initialize_copy$2.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$node=', $Map_node$eq$3 = function(node) {
+        $def(self, '$node=', function $Map_node$eq$1(node) {
           var self = this;
 
           
           self.node = node;
           self.$freeze();
           return self.node;
-        }, $Map_node$eq$3.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$line', $Map_line$4 = function $$line() {
+        $def(self, '$line', function $$line() {
           var self = this;
 
           return self.expression.$line()
-        }, $Map_line$4.$$arity = 0);
+        }, 0);
         self.$alias_method("first_line", "line");
         
-        Opal.def(self, '$column', $Map_column$5 = function $$column() {
+        $def(self, '$column', function $$column() {
           var self = this;
 
           return self.expression.$column()
-        }, $Map_column$5.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$last_line', $Map_last_line$6 = function $$last_line() {
+        $def(self, '$last_line', function $$last_line() {
           var self = this;
 
           return self.expression.$last_line()
-        }, $Map_last_line$6.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$last_column', $Map_last_column$7 = function $$last_column() {
+        $def(self, '$last_column', function $$last_column() {
           var self = this;
 
           return self.expression.$last_column()
-        }, $Map_last_column$7.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$with_expression', $Map_with_expression$8 = function $$with_expression(expression_l) {
-          var $$9, self = this;
-
-          return $send(self, 'with', [], ($$9 = function(map){var self = $$9.$$s == null ? this : $$9.$$s;
+        $def(self, '$with_expression', function $$with_expression(expression_l) {
+          var self = this;
 
+          return $send(self, 'with', [], function $$2(map){
             
             
-            if (map == null) {
-              map = nil;
-            };
-            return map.$update_expression(expression_l);}, $$9.$$s = self, $$9.$$arity = 1, $$9))
-        }, $Map_with_expression$8.$$arity = 1);
+            if (map == null) map = nil;;
+            return map.$update_expression(expression_l);}, 1)
+        }, 1);
         
-        Opal.def(self, '$==', $Map_$eq_eq$10 = function(other) {
-          var $$11, self = this, $ret_or_1 = nil;
+        $def(self, '$==', function $Map_$eq_eq$3(other) {
+          var self = this, $ret_or_1 = nil;
 
           if ($truthy(($ret_or_1 = other.$class()['$=='](self.$class())))) {
-            return $send(self.$instance_variables(), 'map', [], ($$11 = function(ivar){var self = $$11.$$s == null ? this : $$11.$$s;
+            return $send(self.$instance_variables(), 'map', [], function $$4(ivar){var self = $$4.$$s == null ? this : $$4.$$s;
 
               
               
-              if (ivar == null) {
-                ivar = nil;
-              };
-              return self.$instance_variable_get(ivar)['$=='](other.$send("instance_variable_get", ivar));}, $$11.$$s = self, $$11.$$arity = 1, $$11)).$reduce("&")
+              if (ivar == null) ivar = nil;;
+              return self.$instance_variable_get(ivar)['$=='](other.$send("instance_variable_get", ivar));}, {$$arity: 1, $$s: self}).$reduce("&")
           } else {
             return $ret_or_1
           }
-        }, $Map_$eq_eq$10.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$to_hash', $Map_to_hash$12 = function $$to_hash() {
-          var $$13, self = this;
+        $def(self, '$to_hash', function $$to_hash() {
+          var self = this;
 
-          return $send(self.$instance_variables(), 'inject', [$hash2([], {})], ($$13 = function(hash, ivar){var self = $$13.$$s == null ? this : $$13.$$s, $writer = nil;
+          return $send(self.$instance_variables(), 'inject', [$hash2([], {})], function $$5(hash, ivar){var self = $$5.$$s == null ? this : $$5.$$s, $writer = nil;
 
             
             
-            if (hash == null) {
-              hash = nil;
-            };
+            if (hash == null) hash = nil;;
             
-            if (ivar == null) {
-              ivar = nil;
+            if (ivar == null) ivar = nil;;
+            if ($eqeq(ivar.$to_sym(), "@node")) {
+              return hash;
             };
-            if (ivar.$to_sym()['$==']("@node")) {
-              return hash;};
             
             $writer = [ivar['$[]']($range(1, -1, false)).$to_sym(), self.$instance_variable_get(ivar)];
-            $send(hash, '[]=', Opal.to_a($writer));
+            $send(hash, '[]=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
-            return hash;}, $$13.$$s = self, $$13.$$arity = 2, $$13))
-        }, $Map_to_hash$12.$$arity = 0);
+            return hash;}, {$$arity: 2, $$s: self})
+        }, 0);
         self.$protected();
         
-        Opal.def(self, '$with', $Map_with$14 = function() {
-          var $iter = $Map_with$14.$$p, block = $iter || nil, self = this;
+        $def(self, '$with', function $Map_with$6() {
+          var block = $Map_with$6.$$p || nil, self = this;
 
-          if ($iter) $Map_with$14.$$p = null;
-          
+          delete $Map_with$6.$$p;
           
-          if ($iter) $Map_with$14.$$p = null;;
+          ;
           return $send(self.$dup(), 'tap', [], block.$to_proc());
-        }, $Map_with$14.$$arity = 0);
-        return (Opal.def(self, '$update_expression', $Map_update_expression$15 = function $$update_expression(expression_l) {
+        }, 0);
+        return $def(self, '$update_expression', function $$update_expression(expression_l) {
           var self = this;
 
           return (self.expression = expression_l)
-        }, $Map_update_expression$15.$$arity = 1), nil) && 'update_expression';
-      })($nesting[0], null, $nesting)
+        }, 1);
+      })($nesting[0], null)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/map/operator"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["parser/source/map/operator"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def;
 
-  Opal.add_stubs(['$attr_reader']);
+  Opal.add_stubs('attr_reader');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -7336,33 +6232,31 @@ Opal.modules["parser/source/map/operator"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Source');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'Operator');
 
-        var $nesting = [self].concat($parent_nesting), $Operator_initialize$1;
-
+        
         
         self.$attr_reader("operator");
-        return (Opal.def(self, '$initialize', $Operator_initialize$1 = function $$initialize(operator, expression) {
-          var $iter = $Operator_initialize$1.$$p, $yield = $iter || nil, self = this;
+        return $def(self, '$initialize', function $$initialize(operator, expression) {
+          var $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $Operator_initialize$1.$$p = null;
+          delete $$initialize.$$p;
           
           self.operator = operator;
-          return $send2(self, $find_super(self, 'initialize', $Operator_initialize$1, false, true), 'initialize', [expression], null);
-        }, $Operator_initialize$1.$$arity = 2), nil) && 'initialize';
-      })($$($nesting, 'Map'), $$($nesting, 'Map'), $nesting)
+          return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [expression], null);
+        }, 2);
+      })($$('Map'), $$('Map'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/map/collection"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["parser/source/map/collection"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def;
 
-  Opal.add_stubs(['$attr_reader']);
+  Opal.add_stubs('attr_reader');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -7371,34 +6265,32 @@ Opal.modules["parser/source/map/collection"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Source');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'Collection');
 
-        var $nesting = [self].concat($parent_nesting), $Collection_initialize$1;
-
+        
         
         self.$attr_reader("begin");
         self.$attr_reader("end");
-        return (Opal.def(self, '$initialize', $Collection_initialize$1 = function $$initialize(begin_l, end_l, expression_l) {
-          var $a, $iter = $Collection_initialize$1.$$p, $yield = $iter || nil, self = this;
+        return $def(self, '$initialize', function $$initialize(begin_l, end_l, expression_l) {
+          var $a, $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $Collection_initialize$1.$$p = null;
+          delete $$initialize.$$p;
           
           $a = [begin_l, end_l], (self.begin = $a[0]), (self.end = $a[1]), $a;
-          return $send2(self, $find_super(self, 'initialize', $Collection_initialize$1, false, true), 'initialize', [expression_l], null);
-        }, $Collection_initialize$1.$$arity = 3), nil) && 'initialize';
-      })($$($nesting, 'Map'), $$($nesting, 'Map'), $nesting)
+          return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [expression_l], null);
+        }, 3);
+      })($$('Map'), $$('Map'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/map/constant"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $send = Opal.send;
+Opal.modules["parser/source/map/constant"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def, $send = Opal.send;
 
-  Opal.add_stubs(['$attr_reader', '$with', '$update_operator', '$protected']);
+  Opal.add_stubs('attr_reader,with,update_operator,protected');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -7407,55 +6299,50 @@ Opal.modules["parser/source/map/constant"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Source');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'Constant');
 
-        var $nesting = [self].concat($parent_nesting), $Constant_initialize$1, $Constant_with_operator$2, $Constant_update_operator$4;
-
+        
         
         self.$attr_reader("double_colon");
         self.$attr_reader("name");
         self.$attr_reader("operator");
         
-        Opal.def(self, '$initialize', $Constant_initialize$1 = function $$initialize(double_colon, name, expression) {
-          var $a, $iter = $Constant_initialize$1.$$p, $yield = $iter || nil, self = this;
+        $def(self, '$initialize', function $$initialize(double_colon, name, expression) {
+          var $a, $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $Constant_initialize$1.$$p = null;
+          delete $$initialize.$$p;
           
           $a = [double_colon, name], (self.double_colon = $a[0]), (self.name = $a[1]), $a;
-          return $send2(self, $find_super(self, 'initialize', $Constant_initialize$1, false, true), 'initialize', [expression], null);
-        }, $Constant_initialize$1.$$arity = 3);
+          return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [expression], null);
+        }, 3);
         
-        Opal.def(self, '$with_operator', $Constant_with_operator$2 = function $$with_operator(operator_l) {
-          var $$3, self = this;
-
-          return $send(self, 'with', [], ($$3 = function(map){var self = $$3.$$s == null ? this : $$3.$$s;
+        $def(self, '$with_operator', function $$with_operator(operator_l) {
+          var self = this;
 
+          return $send(self, 'with', [], function $$1(map){
             
             
-            if (map == null) {
-              map = nil;
-            };
-            return map.$update_operator(operator_l);}, $$3.$$s = self, $$3.$$arity = 1, $$3))
-        }, $Constant_with_operator$2.$$arity = 1);
+            if (map == null) map = nil;;
+            return map.$update_operator(operator_l);}, 1)
+        }, 1);
         self.$protected();
-        return (Opal.def(self, '$update_operator', $Constant_update_operator$4 = function $$update_operator(operator_l) {
+        return $def(self, '$update_operator', function $$update_operator(operator_l) {
           var self = this;
 
           return (self.operator = operator_l)
-        }, $Constant_update_operator$4.$$arity = 1), nil) && 'update_operator';
-      })($$($nesting, 'Map'), $$($nesting, 'Map'), $nesting)
+        }, 1);
+      })($$('Map'), $$('Map'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/map/variable"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $send = Opal.send;
+Opal.modules["parser/source/map/variable"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def, $send = Opal.send;
 
-  Opal.add_stubs(['$attr_reader', '$with', '$update_operator', '$protected']);
+  Opal.add_stubs('attr_reader,with,update_operator,protected');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -7464,58 +6351,51 @@ Opal.modules["parser/source/map/variable"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Source');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'Variable');
 
-        var $nesting = [self].concat($parent_nesting), $Variable_initialize$1, $Variable_with_operator$2, $Variable_update_operator$4;
-
+        
         
         self.$attr_reader("name");
         self.$attr_reader("operator");
         
-        Opal.def(self, '$initialize', $Variable_initialize$1 = function $$initialize(name_l, expression_l) {
-          var $iter = $Variable_initialize$1.$$p, $yield = $iter || nil, self = this;
+        $def(self, '$initialize', function $$initialize(name_l, expression_l) {
+          var $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $Variable_initialize$1.$$p = null;
+          delete $$initialize.$$p;
           
           
-          if (expression_l == null) {
-            expression_l = name_l;
-          };
+          if (expression_l == null) expression_l = name_l;;
           self.name = name_l;
-          return $send2(self, $find_super(self, 'initialize', $Variable_initialize$1, false, true), 'initialize', [expression_l], null);
-        }, $Variable_initialize$1.$$arity = -2);
+          return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [expression_l], null);
+        }, -2);
         
-        Opal.def(self, '$with_operator', $Variable_with_operator$2 = function $$with_operator(operator_l) {
-          var $$3, self = this;
-
-          return $send(self, 'with', [], ($$3 = function(map){var self = $$3.$$s == null ? this : $$3.$$s;
+        $def(self, '$with_operator', function $$with_operator(operator_l) {
+          var self = this;
 
+          return $send(self, 'with', [], function $$1(map){
             
             
-            if (map == null) {
-              map = nil;
-            };
-            return map.$update_operator(operator_l);}, $$3.$$s = self, $$3.$$arity = 1, $$3))
-        }, $Variable_with_operator$2.$$arity = 1);
+            if (map == null) map = nil;;
+            return map.$update_operator(operator_l);}, 1)
+        }, 1);
         self.$protected();
-        return (Opal.def(self, '$update_operator', $Variable_update_operator$4 = function $$update_operator(operator_l) {
+        return $def(self, '$update_operator', function $$update_operator(operator_l) {
           var self = this;
 
           return (self.operator = operator_l)
-        }, $Variable_update_operator$4.$$arity = 1), nil) && 'update_operator';
-      })($$($nesting, 'Map'), $$($nesting, 'Map'), $nesting)
+        }, 1);
+      })($$('Map'), $$('Map'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/map/keyword"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["parser/source/map/keyword"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def;
 
-  Opal.add_stubs(['$attr_reader']);
+  Opal.add_stubs('attr_reader');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -7524,36 +6404,34 @@ Opal.modules["parser/source/map/keyword"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Source');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'Keyword');
 
-        var $nesting = [self].concat($parent_nesting), $Keyword_initialize$1;
-
+        
         
         self.$attr_reader("keyword");
         self.$attr_reader("begin");
         self.$attr_reader("end");
-        return (Opal.def(self, '$initialize', $Keyword_initialize$1 = function $$initialize(keyword_l, begin_l, end_l, expression_l) {
-          var $a, $iter = $Keyword_initialize$1.$$p, $yield = $iter || nil, self = this;
+        return $def(self, '$initialize', function $$initialize(keyword_l, begin_l, end_l, expression_l) {
+          var $a, $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $Keyword_initialize$1.$$p = null;
+          delete $$initialize.$$p;
           
           self.keyword = keyword_l;
           $a = [begin_l, end_l], (self.begin = $a[0]), (self.end = $a[1]), $a;
-          return $send2(self, $find_super(self, 'initialize', $Keyword_initialize$1, false, true), 'initialize', [expression_l], null);
-        }, $Keyword_initialize$1.$$arity = 4), nil) && 'initialize';
-      })($$($nesting, 'Map'), $$($nesting, 'Map'), $nesting)
+          return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [expression_l], null);
+        }, 4);
+      })($$('Map'), $$('Map'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/map/definition"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["parser/source/map/definition"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def;
 
-  Opal.add_stubs(['$attr_reader', '$join']);
+  Opal.add_stubs('attr_reader,join');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -7562,40 +6440,39 @@ Opal.modules["parser/source/map/definition"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Source');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'Definition');
 
-        var $nesting = [self].concat($parent_nesting), $Definition_initialize$1;
+        var $proto = self.$$prototype;
 
-        self.$$prototype.keyword = self.$$prototype.end = nil;
+        $proto.keyword = $proto.end = nil;
         
         self.$attr_reader("keyword");
         self.$attr_reader("operator");
         self.$attr_reader("name");
         self.$attr_reader("end");
-        return (Opal.def(self, '$initialize', $Definition_initialize$1 = function $$initialize(keyword_l, operator_l, name_l, end_l) {
-          var $iter = $Definition_initialize$1.$$p, $yield = $iter || nil, self = this;
+        return $def(self, '$initialize', function $$initialize(keyword_l, operator_l, name_l, end_l) {
+          var $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $Definition_initialize$1.$$p = null;
+          delete $$initialize.$$p;
           
           self.keyword = keyword_l;
           self.operator = operator_l;
           self.name = name_l;
           self.end = end_l;
-          return $send2(self, $find_super(self, 'initialize', $Definition_initialize$1, false, true), 'initialize', [self.keyword.$join(self.end)], null);
-        }, $Definition_initialize$1.$$arity = 4), nil) && 'initialize';
-      })($$($nesting, 'Map'), $$($nesting, 'Map'), $nesting)
+          return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [self.keyword.$join(self.end)], null);
+        }, 4);
+      })($$('Map'), $$('Map'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/map/method_definition"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $truthy = Opal.truthy;
+Opal.modules["parser/source/map/method_definition"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $truthy = Opal.truthy, $def = Opal.def;
 
-  Opal.add_stubs(['$attr_reader', '$join']);
+  Opal.add_stubs('attr_reader,join');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -7604,46 +6481,41 @@ Opal.modules["parser/source/map/method_definition"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Source');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'MethodDefinition');
 
-        var $nesting = [self].concat($parent_nesting), $MethodDefinition_initialize$1;
+        var $proto = self.$$prototype;
 
-        self.$$prototype.keyword = nil;
+        $proto.keyword = nil;
         
         self.$attr_reader("keyword");
         self.$attr_reader("operator");
         self.$attr_reader("name");
         self.$attr_reader("end");
         self.$attr_reader("assignment");
-        return (Opal.def(self, '$initialize', $MethodDefinition_initialize$1 = function $$initialize(keyword_l, operator_l, name_l, end_l, assignment_l, body_l) {
-          var $iter = $MethodDefinition_initialize$1.$$p, $yield = $iter || nil, self = this, $ret_or_1 = nil;
+        return $def(self, '$initialize', function $$initialize(keyword_l, operator_l, name_l, end_l, assignment_l, body_l) {
+          var $yield = $$initialize.$$p || nil, self = this, $ret_or_1 = nil;
 
-          if ($iter) $MethodDefinition_initialize$1.$$p = null;
+          delete $$initialize.$$p;
           
           self.keyword = keyword_l;
           self.operator = operator_l;
           self.name = name_l;
           self.end = end_l;
           self.assignment = assignment_l;
-          return $send2(self, $find_super(self, 'initialize', $MethodDefinition_initialize$1, false, true), 'initialize', [self.keyword.$join((function() {if ($truthy(($ret_or_1 = end_l))) {
-            return $ret_or_1
-          } else {
-            return body_l
-          }; return nil; })())], null);
-        }, $MethodDefinition_initialize$1.$$arity = 6), nil) && 'initialize';
-      })($$($nesting, 'Map'), $$($nesting, 'Map'), $nesting)
+          return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [self.keyword.$join(($truthy(($ret_or_1 = end_l)) ? ($ret_or_1) : (body_l)))], null);
+        }, 6);
+      })($$('Map'), $$('Map'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/map/send"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $send = Opal.send;
+Opal.modules["parser/source/map/send"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def, $send = Opal.send;
 
-  Opal.add_stubs(['$attr_reader', '$with', '$update_operator', '$protected']);
+  Opal.add_stubs('attr_reader,with,update_operator,protected');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -7652,13 +6524,12 @@ Opal.modules["parser/source/map/send"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Source');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'Send');
 
-        var $nesting = [self].concat($parent_nesting), $Send_initialize$1, $Send_with_operator$2, $Send_update_operator$4;
-
+        
         
         self.$attr_reader("dot");
         self.$attr_reader("selector");
@@ -7666,45 +6537,41 @@ Opal.modules["parser/source/map/send"] = function(Opal) {
         self.$attr_reader("begin");
         self.$attr_reader("end");
         
-        Opal.def(self, '$initialize', $Send_initialize$1 = function $$initialize(dot_l, selector_l, begin_l, end_l, expression_l) {
-          var $a, $iter = $Send_initialize$1.$$p, $yield = $iter || nil, self = this;
+        $def(self, '$initialize', function $$initialize(dot_l, selector_l, begin_l, end_l, expression_l) {
+          var $a, $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $Send_initialize$1.$$p = null;
+          delete $$initialize.$$p;
           
           self.dot = dot_l;
           self.selector = selector_l;
           $a = [begin_l, end_l], (self.begin = $a[0]), (self.end = $a[1]), $a;
-          return $send2(self, $find_super(self, 'initialize', $Send_initialize$1, false, true), 'initialize', [expression_l], null);
-        }, $Send_initialize$1.$$arity = 5);
+          return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [expression_l], null);
+        }, 5);
         
-        Opal.def(self, '$with_operator', $Send_with_operator$2 = function $$with_operator(operator_l) {
-          var $$3, self = this;
-
-          return $send(self, 'with', [], ($$3 = function(map){var self = $$3.$$s == null ? this : $$3.$$s;
+        $def(self, '$with_operator', function $$with_operator(operator_l) {
+          var self = this;
 
+          return $send(self, 'with', [], function $$1(map){
             
             
-            if (map == null) {
-              map = nil;
-            };
-            return map.$update_operator(operator_l);}, $$3.$$s = self, $$3.$$arity = 1, $$3))
-        }, $Send_with_operator$2.$$arity = 1);
+            if (map == null) map = nil;;
+            return map.$update_operator(operator_l);}, 1)
+        }, 1);
         self.$protected();
-        return (Opal.def(self, '$update_operator', $Send_update_operator$4 = function $$update_operator(operator_l) {
+        return $def(self, '$update_operator', function $$update_operator(operator_l) {
           var self = this;
 
           return (self.operator = operator_l)
-        }, $Send_update_operator$4.$$arity = 1), nil) && 'update_operator';
-      })($$($nesting, 'Map'), $$($nesting, 'Map'), $nesting)
+        }, 1);
+      })($$('Map'), $$('Map'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/map/index"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $send = Opal.send;
+Opal.modules["parser/source/map/index"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def, $send = Opal.send;
 
-  Opal.add_stubs(['$attr_reader', '$with', '$update_operator', '$protected']);
+  Opal.add_stubs('attr_reader,with,update_operator,protected');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -7713,56 +6580,51 @@ Opal.modules["parser/source/map/index"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Source');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'Index');
 
-        var $nesting = [self].concat($parent_nesting), $Index_initialize$1, $Index_with_operator$2, $Index_update_operator$4;
-
+        
         
         self.$attr_reader("begin");
         self.$attr_reader("end");
         self.$attr_reader("operator");
         
-        Opal.def(self, '$initialize', $Index_initialize$1 = function $$initialize(begin_l, end_l, expression_l) {
-          var $a, $iter = $Index_initialize$1.$$p, $yield = $iter || nil, self = this;
+        $def(self, '$initialize', function $$initialize(begin_l, end_l, expression_l) {
+          var $a, $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $Index_initialize$1.$$p = null;
+          delete $$initialize.$$p;
           
           $a = [begin_l, end_l], (self.begin = $a[0]), (self.end = $a[1]), $a;
           self.operator = nil;
-          return $send2(self, $find_super(self, 'initialize', $Index_initialize$1, false, true), 'initialize', [expression_l], null);
-        }, $Index_initialize$1.$$arity = 3);
+          return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [expression_l], null);
+        }, 3);
         
-        Opal.def(self, '$with_operator', $Index_with_operator$2 = function $$with_operator(operator_l) {
-          var $$3, self = this;
-
-          return $send(self, 'with', [], ($$3 = function(map){var self = $$3.$$s == null ? this : $$3.$$s;
+        $def(self, '$with_operator', function $$with_operator(operator_l) {
+          var self = this;
 
+          return $send(self, 'with', [], function $$1(map){
             
             
-            if (map == null) {
-              map = nil;
-            };
-            return map.$update_operator(operator_l);}, $$3.$$s = self, $$3.$$arity = 1, $$3))
-        }, $Index_with_operator$2.$$arity = 1);
+            if (map == null) map = nil;;
+            return map.$update_operator(operator_l);}, 1)
+        }, 1);
         self.$protected();
-        return (Opal.def(self, '$update_operator', $Index_update_operator$4 = function $$update_operator(operator_l) {
+        return $def(self, '$update_operator', function $$update_operator(operator_l) {
           var self = this;
 
           return (self.operator = operator_l)
-        }, $Index_update_operator$4.$$arity = 1), nil) && 'update_operator';
-      })($$($nesting, 'Map'), $$($nesting, 'Map'), $nesting)
+        }, 1);
+      })($$('Map'), $$('Map'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/map/condition"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["parser/source/map/condition"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def;
 
-  Opal.add_stubs(['$attr_reader']);
+  Opal.add_stubs('attr_reader');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -7771,37 +6633,35 @@ Opal.modules["parser/source/map/condition"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Source');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'Condition');
 
-        var $nesting = [self].concat($parent_nesting), $Condition_initialize$1;
-
+        
         
         self.$attr_reader("keyword");
         self.$attr_reader("begin");
         self.$attr_reader("else");
         self.$attr_reader("end");
-        return (Opal.def(self, '$initialize', $Condition_initialize$1 = function $$initialize(keyword_l, begin_l, else_l, end_l, expression_l) {
-          var $a, $iter = $Condition_initialize$1.$$p, $yield = $iter || nil, self = this;
+        return $def(self, '$initialize', function $$initialize(keyword_l, begin_l, else_l, end_l, expression_l) {
+          var $a, $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $Condition_initialize$1.$$p = null;
+          delete $$initialize.$$p;
           
           self.keyword = keyword_l;
           $a = [begin_l, else_l, end_l], (self.begin = $a[0]), (self["else"] = $a[1]), (self.end = $a[2]), $a;
-          return $send2(self, $find_super(self, 'initialize', $Condition_initialize$1, false, true), 'initialize', [expression_l], null);
-        }, $Condition_initialize$1.$$arity = 5), nil) && 'initialize';
-      })($$($nesting, 'Map'), $$($nesting, 'Map'), $nesting)
+          return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [expression_l], null);
+        }, 5);
+      })($$('Map'), $$('Map'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/map/ternary"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["parser/source/map/ternary"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def;
 
-  Opal.add_stubs(['$attr_reader']);
+  Opal.add_stubs('attr_reader');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -7810,34 +6670,32 @@ Opal.modules["parser/source/map/ternary"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Source');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'Ternary');
 
-        var $nesting = [self].concat($parent_nesting), $Ternary_initialize$1;
-
+        
         
         self.$attr_reader("question");
         self.$attr_reader("colon");
-        return (Opal.def(self, '$initialize', $Ternary_initialize$1 = function $$initialize(question_l, colon_l, expression_l) {
-          var $a, $iter = $Ternary_initialize$1.$$p, $yield = $iter || nil, self = this;
+        return $def(self, '$initialize', function $$initialize(question_l, colon_l, expression_l) {
+          var $a, $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $Ternary_initialize$1.$$p = null;
+          delete $$initialize.$$p;
           
           $a = [question_l, colon_l], (self.question = $a[0]), (self.colon = $a[1]), $a;
-          return $send2(self, $find_super(self, 'initialize', $Ternary_initialize$1, false, true), 'initialize', [expression_l], null);
-        }, $Ternary_initialize$1.$$arity = 3), nil) && 'initialize';
-      })($$($nesting, 'Map'), $$($nesting, 'Map'), $nesting)
+          return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [expression_l], null);
+        }, 3);
+      })($$('Map'), $$('Map'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/map/for"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["parser/source/map/for"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def;
 
-  Opal.add_stubs(['$attr_reader']);
+  Opal.add_stubs('attr_reader');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -7846,35 +6704,33 @@ Opal.modules["parser/source/map/for"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Source');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'For');
 
-        var $nesting = [self].concat($parent_nesting), $For_initialize$1;
-
+        
         
         self.$attr_reader("keyword", "in");
         self.$attr_reader("begin", "end");
-        return (Opal.def(self, '$initialize', $For_initialize$1 = function $$initialize(keyword_l, in_l, begin_l, end_l, expression_l) {
-          var $a, $iter = $For_initialize$1.$$p, $yield = $iter || nil, self = this;
+        return $def(self, '$initialize', function $$initialize(keyword_l, in_l, begin_l, end_l, expression_l) {
+          var $a, $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $For_initialize$1.$$p = null;
+          delete $$initialize.$$p;
           
           $a = [keyword_l, in_l], (self.keyword = $a[0]), (self["in"] = $a[1]), $a;
           $a = [begin_l, end_l], (self.begin = $a[0]), (self.end = $a[1]), $a;
-          return $send2(self, $find_super(self, 'initialize', $For_initialize$1, false, true), 'initialize', [expression_l], null);
-        }, $For_initialize$1.$$arity = 5), nil) && 'initialize';
-      })($$($nesting, 'Map'), $$($nesting, 'Map'), $nesting)
+          return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [expression_l], null);
+        }, 5);
+      })($$('Map'), $$('Map'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/map/rescue_body"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["parser/source/map/rescue_body"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def;
 
-  Opal.add_stubs(['$attr_reader']);
+  Opal.add_stubs('attr_reader');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -7883,37 +6739,35 @@ Opal.modules["parser/source/map/rescue_body"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Source');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'RescueBody');
 
-        var $nesting = [self].concat($parent_nesting), $RescueBody_initialize$1;
-
+        
         
         self.$attr_reader("keyword");
         self.$attr_reader("assoc");
         self.$attr_reader("begin");
-        return (Opal.def(self, '$initialize', $RescueBody_initialize$1 = function $$initialize(keyword_l, assoc_l, begin_l, expression_l) {
-          var $iter = $RescueBody_initialize$1.$$p, $yield = $iter || nil, self = this;
+        return $def(self, '$initialize', function $$initialize(keyword_l, assoc_l, begin_l, expression_l) {
+          var $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $RescueBody_initialize$1.$$p = null;
+          delete $$initialize.$$p;
           
           self.keyword = keyword_l;
           self.assoc = assoc_l;
           self.begin = begin_l;
-          return $send2(self, $find_super(self, 'initialize', $RescueBody_initialize$1, false, true), 'initialize', [expression_l], null);
-        }, $RescueBody_initialize$1.$$arity = 4), nil) && 'initialize';
-      })($$($nesting, 'Map'), $$($nesting, 'Map'), $nesting)
+          return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [expression_l], null);
+        }, 4);
+      })($$('Map'), $$('Map'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/map/heredoc"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["parser/source/map/heredoc"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def;
 
-  Opal.add_stubs(['$attr_reader']);
+  Opal.add_stubs('attr_reader');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -7922,35 +6776,33 @@ Opal.modules["parser/source/map/heredoc"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Source');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'Heredoc');
 
-        var $nesting = [self].concat($parent_nesting), $Heredoc_initialize$1;
-
+        
         
         self.$attr_reader("heredoc_body");
         self.$attr_reader("heredoc_end");
-        return (Opal.def(self, '$initialize', $Heredoc_initialize$1 = function $$initialize(begin_l, body_l, end_l) {
-          var $iter = $Heredoc_initialize$1.$$p, $yield = $iter || nil, self = this;
+        return $def(self, '$initialize', function $$initialize(begin_l, body_l, end_l) {
+          var $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $Heredoc_initialize$1.$$p = null;
+          delete $$initialize.$$p;
           
           self.heredoc_body = body_l;
           self.heredoc_end = end_l;
-          return $send2(self, $find_super(self, 'initialize', $Heredoc_initialize$1, false, true), 'initialize', [begin_l], null);
-        }, $Heredoc_initialize$1.$$arity = 3), nil) && 'initialize';
-      })($$($nesting, 'Map'), $$($nesting, 'Map'), $nesting)
+          return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [begin_l], null);
+        }, 3);
+      })($$('Map'), $$('Map'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/map/objc_kwarg"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["parser/source/map/objc_kwarg"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def;
 
-  Opal.add_stubs(['$attr_reader']);
+  Opal.add_stubs('attr_reader');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -7959,98 +6811,72 @@ Opal.modules["parser/source/map/objc_kwarg"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Source');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'ObjcKwarg');
 
-        var $nesting = [self].concat($parent_nesting), $ObjcKwarg_initialize$1;
-
+        
         
         self.$attr_reader("keyword");
         self.$attr_reader("operator");
         self.$attr_reader("argument");
-        return (Opal.def(self, '$initialize', $ObjcKwarg_initialize$1 = function $$initialize(keyword_l, operator_l, argument_l, expression_l) {
-          var $a, $iter = $ObjcKwarg_initialize$1.$$p, $yield = $iter || nil, self = this;
+        return $def(self, '$initialize', function $$initialize(keyword_l, operator_l, argument_l, expression_l) {
+          var $a, $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $ObjcKwarg_initialize$1.$$p = null;
+          delete $$initialize.$$p;
           
           $a = [keyword_l, operator_l, argument_l], (self.keyword = $a[0]), (self.operator = $a[1]), (self.argument = $a[2]), $a;
-          return $send2(self, $find_super(self, 'initialize', $ObjcKwarg_initialize$1, false, true), 'initialize', [expression_l], null);
-        }, $ObjcKwarg_initialize$1.$$arity = 4), nil) && 'initialize';
-      })($$($nesting, 'Map'), $$($nesting, 'Map'), $nesting)
+          return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [expression_l], null);
+        }, 4);
+      })($$('Map'), $$('Map'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/syntax_error"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["parser/syntax_error"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def;
 
-  Opal.add_stubs(['$attr_reader', '$message']);
+  Opal.add_stubs('attr_reader,message');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
-    var $nesting = [self].concat($parent_nesting);
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-    return (function($base, $super, $parent_nesting) {
+    return (function($base, $super) {
       var self = $klass($base, $super, 'SyntaxError');
 
-      var $nesting = [self].concat($parent_nesting), $SyntaxError_initialize$1;
-
+      
       
       self.$attr_reader("diagnostic");
-      return (Opal.def(self, '$initialize', $SyntaxError_initialize$1 = function $$initialize(diagnostic) {
-        var $iter = $SyntaxError_initialize$1.$$p, $yield = $iter || nil, self = this;
+      return $def(self, '$initialize', function $$initialize(diagnostic) {
+        var $yield = $$initialize.$$p || nil, self = this;
 
-        if ($iter) $SyntaxError_initialize$1.$$p = null;
+        delete $$initialize.$$p;
         
         self.diagnostic = diagnostic;
-        return $send2(self, $find_super(self, 'initialize', $SyntaxError_initialize$1, false, true), 'initialize', [diagnostic.$message()], null);
-      }, $SyntaxError_initialize$1.$$arity = 1), nil) && 'initialize';
-    })($nesting[0], $$($nesting, 'StandardError'), $nesting)
+        return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [diagnostic.$message()], null);
+      }, 1);
+    })($nesting[0], $$('StandardError'))
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/clobbering_error"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass;
+Opal.modules["parser/clobbering_error"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass;
 
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
-    var $nesting = [self].concat($parent_nesting);
-
-    return (function($base, $super, $parent_nesting) {
-      var self = $klass($base, $super, 'ClobberingError');
-
-      var $nesting = [self].concat($parent_nesting);
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return nil
-    })($nesting[0], $$($nesting, 'RuntimeError'), $nesting)
+    return ($klass($nesting[0], $$('RuntimeError'), 'ClobberingError'), nil)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/diagnostic"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_times(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs * rhs : lhs['$*'](rhs);
-  }
-  function $rb_ge(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs >= rhs : lhs['$>='](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $hash2 = Opal.hash2, $send = Opal.send;
-
-  Opal.add_stubs(['$freeze', '$attr_reader', '$include?', '$raise', '$join', '$inspect', '$dup', '$compile', '$==', '$line', '$last_line', '$is?', '$+', '$message', '$render_line', '$first_line_only', '$last_line_only', '$-', '$source_buffer', '$decompose_position', '$end_pos', '$>', '$private', '$source_line', '$*', '$length', '$each', '$line_range', '$intersect', '$column_range', '$size', '$[]=', '$!', '$>=', '$map', '$name', '$!=', '$resize', '$=~', '$source', '$adjust']);
+Opal.modules["parser/diagnostic"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $const_set = Opal.const_set, $truthy = Opal.truthy, $hash2 = Opal.hash2, $def = Opal.def, $eqeq = Opal.eqeq, $rb_plus = Opal.rb_plus, $rb_minus = Opal.rb_minus, $to_ary = Opal.to_ary, $rb_gt = Opal.rb_gt, $rb_times = Opal.rb_times, $send = Opal.send, $to_a = Opal.to_a, $rb_ge = Opal.rb_ge, $not = Opal.not, $neqeq = Opal.neqeq;
+
+  Opal.add_stubs('freeze,attr_reader,include?,raise,join,inspect,dup,compile,is?,==,line,last_line,+,message,render_line,first_line_only,last_line_only,-,source_buffer,decompose_position,end_pos,>,private,source_line,*,length,each,line_range,intersect,column_range,size,[]=,>=,!,map,name,!=,resize,=~,source,adjust');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -8059,56 +6885,44 @@ Opal.modules["parser/diagnostic"] = function(Opal) {
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Diagnostic');
 
-      var $nesting = [self].concat($parent_nesting), $Diagnostic_initialize$1, $Diagnostic_message$2, $Diagnostic_render$3, $Diagnostic_render_line$4, $Diagnostic_first_line_only$7, $Diagnostic_last_line_only$8;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.reason = self.$$prototype["arguments"] = self.$$prototype.location = self.$$prototype.level = self.$$prototype.highlights = nil;
+      $proto.reason = $proto["arguments"] = $proto.location = $proto.level = $proto.highlights = nil;
       
-      Opal.const_set($nesting[0], 'LEVELS', ["note", "warning", "error", "fatal"].$freeze());
+      $const_set($nesting[0], 'LEVELS', ["note", "warning", "error", "fatal"].$freeze());
       self.$attr_reader("level", "reason", "arguments");
       self.$attr_reader("location", "highlights");
       
-      Opal.def(self, '$initialize', $Diagnostic_initialize$1 = function $$initialize(level, reason, arguments$, location, highlights) {
+      $def(self, '$initialize', function $$initialize(level, reason, arguments$, location, highlights) {
         var self = this, $ret_or_1 = nil;
 
         
         
-        if (highlights == null) {
-          highlights = [];
-        };
-        if ($truthy($$($nesting, 'LEVELS')['$include?'](level))) {
-        } else {
-          self.$raise($$($nesting, 'ArgumentError'), "" + ("" + "Diagnostic#level must be one of " + ($$($nesting, 'LEVELS').$join(", ")) + "; ") + ("" + (level.$inspect()) + " provided."))
+        if (highlights == null) highlights = [];;
+        if (!$truthy($$('LEVELS')['$include?'](level))) {
+          self.$raise($$('ArgumentError'), "" + ("Diagnostic#level must be one of " + ($$('LEVELS').$join(", ")) + "; ") + ("" + (level.$inspect()) + " provided."))
         };
-        if ($truthy(location)) {
-        } else {
+        if (!$truthy(location)) {
           self.$raise("Expected a location")
         };
         self.level = level;
         self.reason = reason;
-        self["arguments"] = (function() {if ($truthy(($ret_or_1 = arguments$))) {
-          return $ret_or_1
-        } else {
-          return $hash2([], {})
-        }; return nil; })().$dup().$freeze();
+        self["arguments"] = ($truthy(($ret_or_1 = arguments$)) ? ($ret_or_1) : ($hash2([], {}))).$dup().$freeze();
         self.location = location;
         self.highlights = highlights.$dup().$freeze();
         return self.$freeze();
-      }, $Diagnostic_initialize$1.$$arity = -5);
+      }, -5);
       
-      Opal.def(self, '$message', $Diagnostic_message$2 = function $$message() {
+      $def(self, '$message', function $$message() {
         var self = this;
 
-        return $$($nesting, 'Messages').$compile(self.reason, self["arguments"])
-      }, $Diagnostic_message$2.$$arity = 0);
+        return $$('Messages').$compile(self.reason, self["arguments"])
+      }, 0);
       
-      Opal.def(self, '$render', $Diagnostic_render$3 = function $$render() {
-        var $a, $b, self = this, $ret_or_2 = nil, first_line = nil, last_line = nil, num_lines = nil, buffer = nil, last_lineno = nil, last_column = nil;
+      $def(self, '$render', function $$render() {
+        var $a, $b, self = this, first_line = nil, last_line = nil, num_lines = nil, buffer = nil, last_lineno = nil, last_column = nil;
 
-        if ($truthy((function() {if ($truthy(($ret_or_2 = self.location.$line()['$=='](self.location.$last_line())))) {
-          return $ret_or_2
-        } else {
-          return self.location['$is?']("\n")
-        }; return nil; })())) {
+        if (($eqeq(self.location.$line(), self.location.$last_line()) || ($truthy(self.location['$is?']("\n"))))) {
           return $rb_plus(["" + (self.location) + ": " + (self.level) + ": " + (self.$message())], self.$render_line(self.location))
         } else {
           
@@ -8116,141 +6930,127 @@ Opal.modules["parser/diagnostic"] = function(Opal) {
           last_line = self.$last_line_only(self.location);
           num_lines = $rb_plus($rb_minus(self.location.$last_line(), self.location.$line()), 1);
           buffer = self.location.$source_buffer();
-          $b = buffer.$decompose_position(self.location.$end_pos()), $a = Opal.to_ary($b), (last_lineno = ($a[0] == null ? nil : $a[0])), (last_column = ($a[1] == null ? nil : $a[1])), $b;
+          $b = buffer.$decompose_position(self.location.$end_pos()), $a = $to_ary($b), (last_lineno = ($a[0] == null ? nil : $a[0])), (last_column = ($a[1] == null ? nil : $a[1])), $b;
           return $rb_plus($rb_plus(["" + (self.location) + "-" + (last_lineno) + ":" + (last_column) + ": " + (self.level) + ": " + (self.$message())], self.$render_line(first_line, $rb_gt(num_lines, 2), false)), self.$render_line(last_line, false, true));
         }
-      }, $Diagnostic_render$3.$$arity = 0);
+      }, 0);
       self.$private();
       
-      Opal.def(self, '$render_line', $Diagnostic_render_line$4 = function $$render_line(range, ellipsis, range_end) {
-        var $$5, $$6, self = this, source_line = nil, highlight_line = nil, $ret_or_3 = nil, $writer = nil;
+      $def(self, '$render_line', function $$render_line(range, ellipsis, range_end) {
+        var self = this, source_line = nil, highlight_line = nil, $writer = nil;
 
         
         
-        if (ellipsis == null) {
-          ellipsis = false;
-        };
+        if (ellipsis == null) ellipsis = false;;
         
-        if (range_end == null) {
-          range_end = false;
-        };
+        if (range_end == null) range_end = false;;
         source_line = range.$source_line();
         highlight_line = $rb_times(" ", source_line.$length());
-        $send(self.highlights, 'each', [], ($$5 = function(highlight){var self = $$5.$$s == null ? this : $$5.$$s, line_range = nil, $writer = nil;
+        $send(self.highlights, 'each', [], function $$1(highlight){var line_range = nil, $writer = nil;
 
           
           
-          if (highlight == null) {
-            highlight = nil;
-          };
+          if (highlight == null) highlight = nil;;
           line_range = range.$source_buffer().$line_range(range.$line());
           if ($truthy((highlight = highlight.$intersect(line_range)))) {
             
             $writer = [highlight.$column_range(), $rb_times("~", highlight.$size())];
-            $send(highlight_line, '[]=', Opal.to_a($writer));
+            $send(highlight_line, '[]=', $to_a($writer));
             return $writer[$rb_minus($writer["length"], 1)];
           } else {
             return nil
-          };}, $$5.$$s = self, $$5.$$arity = 1, $$5));
+          };}, 1);
         if ($truthy(range['$is?']("\n"))) {
           highlight_line = $rb_plus(highlight_line, "^")
-        } else if ($truthy((function() {if ($truthy(($ret_or_3 = range_end['$!']()))) {
-          return $rb_ge(range.$size(), 1)
-        } else {
-          return $ret_or_3
-        }; return nil; })())) {
+        } else if (($not(range_end) && ($truthy($rb_ge(range.$size(), 1))))) {
           
           $writer = [range.$column_range(), $rb_plus("^", $rb_times("~", $rb_minus(range.$size(), 1)))];
-          $send(highlight_line, '[]=', Opal.to_a($writer));
+          $send(highlight_line, '[]=', $to_a($writer));
           $writer[$rb_minus($writer["length"], 1)];
         } else {
           
           $writer = [range.$column_range(), $rb_times("~", range.$size())];
-          $send(highlight_line, '[]=', Opal.to_a($writer));
+          $send(highlight_line, '[]=', $to_a($writer));
           $writer[$rb_minus($writer["length"], 1)];
         };
         if ($truthy(ellipsis)) {
-          highlight_line = $rb_plus(highlight_line, "...")};
-        return $send([source_line, highlight_line], 'map', [], ($$6 = function(line){var self = $$6.$$s == null ? this : $$6.$$s;
-
+          highlight_line = $rb_plus(highlight_line, "...")
+        };
+        return $send([source_line, highlight_line], 'map', [], function $$2(line){
           
           
-          if (line == null) {
-            line = nil;
-          };
-          return "" + (range.$source_buffer().$name()) + ":" + (range.$line()) + ": " + (line);}, $$6.$$s = self, $$6.$$arity = 1, $$6));
-      }, $Diagnostic_render_line$4.$$arity = -2);
+          if (line == null) line = nil;;
+          return "" + (range.$source_buffer().$name()) + ":" + (range.$line()) + ": " + (line);}, 1);
+      }, -2);
       
-      Opal.def(self, '$first_line_only', $Diagnostic_first_line_only$7 = function $$first_line_only(range) {
-        var self = this;
-
-        if ($truthy(range.$line()['$!='](range.$last_line()))) {
+      $def(self, '$first_line_only', function $$first_line_only(range) {
+        
+        if ($neqeq(range.$line(), range.$last_line())) {
           return range.$resize(range.$source()['$=~'](/\n/))
         } else {
           return range
         }
-      }, $Diagnostic_first_line_only$7.$$arity = 1);
-      return (Opal.def(self, '$last_line_only', $Diagnostic_last_line_only$8 = function $$last_line_only(range) {
-        var self = this;
-
-        if ($truthy(range.$line()['$!='](range.$last_line()))) {
+      }, 1);
+      return $def(self, '$last_line_only', function $$last_line_only(range) {
+        
+        if ($neqeq(range.$line(), range.$last_line())) {
           return range.$adjust($hash2(["begin_pos"], {"begin_pos": range.$source()['$=~'](/[^\n]*$/)}))
         } else {
           return range
         }
-      }, $Diagnostic_last_line_only$8.$$arity = 1), nil) && 'last_line_only';
+      }, 1);
     })($nesting[0], null, $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/diagnostic/engine"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy;
+Opal.modules["parser/diagnostic/engine"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $def = Opal.def, $truthy = Opal.truthy;
 
-  Opal.add_stubs(['$attr_accessor', '$ignore?', '$call', '$raise?', '$raise', '$protected', '$==', '$level']);
+  Opal.add_stubs('attr_accessor,ignore?,call,raise?,raise,protected,==,level');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
-    var $nesting = [self].concat($parent_nesting);
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Engine');
 
-      var $nesting = [self].concat($parent_nesting), $Engine_initialize$1, $Engine_process$2, $Engine_ignore$ques$3, $Engine_raise$ques$4;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.consumer = self.$$prototype.ignore_warnings = self.$$prototype.all_errors_are_fatal = nil;
+      $proto.consumer = $proto.ignore_warnings = $proto.all_errors_are_fatal = nil;
       
       self.$attr_accessor("consumer");
       self.$attr_accessor("all_errors_are_fatal");
       self.$attr_accessor("ignore_warnings");
       
-      Opal.def(self, '$initialize', $Engine_initialize$1 = function $$initialize(consumer) {
+      $def(self, '$initialize', function $$initialize(consumer) {
         var self = this;
 
         
         
-        if (consumer == null) {
-          consumer = nil;
-        };
+        if (consumer == null) consumer = nil;;
         self.consumer = consumer;
         self.all_errors_are_fatal = false;
         return (self.ignore_warnings = false);
-      }, $Engine_initialize$1.$$arity = -1);
+      }, -1);
       
-      Opal.def(self, '$process', $Engine_process$2 = function $$process(diagnostic) {
+      $def(self, '$process', function $$process(diagnostic) {
         var self = this;
 
         
-        if ($truthy(self['$ignore?'](diagnostic))) {
-        } else if ($truthy(self.consumer)) {
-          self.consumer.$call(diagnostic)};
+        if (!$truthy(self['$ignore?'](diagnostic))) {
+          if ($truthy(self.consumer)) {
+            self.consumer.$call(diagnostic)
+          }
+        };
         if ($truthy(self['$raise?'](diagnostic))) {
-          self.$raise($$$($$($nesting, 'Parser'), 'SyntaxError'), diagnostic)};
+          self.$raise($$$($$('Parser'), 'SyntaxError'), diagnostic)
+        };
         return self;
-      }, $Engine_process$2.$$arity = 1);
+      }, 1);
       self.$protected();
       
-      Opal.def(self, '$ignore?', $Engine_ignore$ques$3 = function(diagnostic) {
+      $def(self, '$ignore?', function $Engine_ignore$ques$1(diagnostic) {
         var self = this, $ret_or_1 = nil;
 
         if ($truthy(($ret_or_1 = self.ignore_warnings))) {
@@ -8258,29 +7058,24 @@ Opal.modules["parser/diagnostic/engine"] = function(Opal) {
         } else {
           return $ret_or_1
         }
-      }, $Engine_ignore$ques$3.$$arity = 1);
-      return (Opal.def(self, '$raise?', $Engine_raise$ques$4 = function(diagnostic) {
-        var self = this, $ret_or_2 = nil, $ret_or_3 = nil;
+      }, 1);
+      return $def(self, '$raise?', function $Engine_raise$ques$2(diagnostic) {
+        var self = this, $ret_or_1 = nil, $ret_or_2 = nil;
 
-        if ($truthy(($ret_or_2 = (function() {if ($truthy(($ret_or_3 = self.all_errors_are_fatal))) {
-          return diagnostic.$level()['$==']("error")
-        } else {
-          return $ret_or_3
-        }; return nil; })()))) {
-          return $ret_or_2
+        if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = self.all_errors_are_fatal)) ? (diagnostic.$level()['$==']("error")) : ($ret_or_2))))) {
+          return $ret_or_1
         } else {
           return diagnostic.$level()['$==']("fatal")
         }
-      }, $Engine_raise$ques$4.$$arity = 1), nil) && 'raise?';
-    })($$($nesting, 'Diagnostic'), null, $nesting)
+      }, 1);
+    })($$('Diagnostic'), null, $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/static_environment"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass;
+Opal.modules["parser/static_environment"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $const_set = Opal.const_set, $def = Opal.def;
 
-  Opal.add_stubs(['$reset', '$[]', '$push', '$dup', '$pop', '$add', '$to_sym', '$include?', '$declare', '$declared?', '$empty?']);
+  Opal.add_stubs('reset,[],push,dup,pop,add,to_sym,include?,declare,declared?,empty?');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -8289,464 +7084,410 @@ Opal.modules["parser/static_environment"] = function(Opal) {
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'StaticEnvironment');
 
-      var $nesting = [self].concat($parent_nesting), $StaticEnvironment_initialize$1, $StaticEnvironment_reset$2, $StaticEnvironment_extend_static$3, $StaticEnvironment_extend_dynamic$4, $StaticEnvironment_unextend$5, $StaticEnvironment_declare$6, $StaticEnvironment_declared$ques$7, $StaticEnvironment_declare_forward_args$8, $StaticEnvironment_declared_forward_args$ques$9, $StaticEnvironment_declare_anonymous_blockarg$10, $StaticEnvironment_declared_anonymous_blockarg$ques$11, $StaticEnvironment_empty$ques$12;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.stack = self.$$prototype.variables = nil;
+      $proto.stack = $proto.variables = nil;
       
-      Opal.const_set($nesting[0], 'FORWARD_ARGS', "FORWARD_ARGS");
-      Opal.const_set($nesting[0], 'ANONYMOUS_BLOCKARG', "ANONYMOUS_BLOCKARG");
+      $const_set($nesting[0], 'FORWARD_ARGS', "FORWARD_ARGS");
+      $const_set($nesting[0], 'ANONYMOUS_BLOCKARG', "ANONYMOUS_BLOCKARG");
       
-      Opal.def(self, '$initialize', $StaticEnvironment_initialize$1 = function $$initialize() {
+      $def(self, '$initialize', function $$initialize() {
         var self = this;
 
         return self.$reset()
-      }, $StaticEnvironment_initialize$1.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$reset', $StaticEnvironment_reset$2 = function $$reset() {
+      $def(self, '$reset', function $$reset() {
         var self = this;
 
         
-        self.variables = $$($nesting, 'Set')['$[]']();
+        self.variables = $$('Set')['$[]']();
         return (self.stack = []);
-      }, $StaticEnvironment_reset$2.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$extend_static', $StaticEnvironment_extend_static$3 = function $$extend_static() {
+      $def(self, '$extend_static', function $$extend_static() {
         var self = this;
 
         
         self.stack.$push(self.variables);
-        self.variables = $$($nesting, 'Set')['$[]']();
+        self.variables = $$('Set')['$[]']();
         return self;
-      }, $StaticEnvironment_extend_static$3.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$extend_dynamic', $StaticEnvironment_extend_dynamic$4 = function $$extend_dynamic() {
+      $def(self, '$extend_dynamic', function $$extend_dynamic() {
         var self = this;
 
         
         self.stack.$push(self.variables);
         self.variables = self.variables.$dup();
         return self;
-      }, $StaticEnvironment_extend_dynamic$4.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$unextend', $StaticEnvironment_unextend$5 = function $$unextend() {
+      $def(self, '$unextend', function $$unextend() {
         var self = this;
 
         
         self.variables = self.stack.$pop();
         return self;
-      }, $StaticEnvironment_unextend$5.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$declare', $StaticEnvironment_declare$6 = function $$declare(name) {
+      $def(self, '$declare', function $$declare(name) {
         var self = this;
 
         
         self.variables.$add(name.$to_sym());
         return self;
-      }, $StaticEnvironment_declare$6.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$declared?', $StaticEnvironment_declared$ques$7 = function(name) {
+      $def(self, '$declared?', function $StaticEnvironment_declared$ques$1(name) {
         var self = this;
 
         return self.variables['$include?'](name.$to_sym())
-      }, $StaticEnvironment_declared$ques$7.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$declare_forward_args', $StaticEnvironment_declare_forward_args$8 = function $$declare_forward_args() {
+      $def(self, '$declare_forward_args', function $$declare_forward_args() {
         var self = this;
 
-        return self.$declare($$($nesting, 'FORWARD_ARGS'))
-      }, $StaticEnvironment_declare_forward_args$8.$$arity = 0);
+        return self.$declare($$('FORWARD_ARGS'))
+      }, 0);
       
-      Opal.def(self, '$declared_forward_args?', $StaticEnvironment_declared_forward_args$ques$9 = function() {
+      $def(self, '$declared_forward_args?', function $StaticEnvironment_declared_forward_args$ques$2() {
         var self = this;
 
-        return self['$declared?']($$($nesting, 'FORWARD_ARGS'))
-      }, $StaticEnvironment_declared_forward_args$ques$9.$$arity = 0);
+        return self['$declared?']($$('FORWARD_ARGS'))
+      }, 0);
       
-      Opal.def(self, '$declare_anonymous_blockarg', $StaticEnvironment_declare_anonymous_blockarg$10 = function $$declare_anonymous_blockarg() {
+      $def(self, '$declare_anonymous_blockarg', function $$declare_anonymous_blockarg() {
         var self = this;
 
-        return self.$declare($$($nesting, 'ANONYMOUS_BLOCKARG'))
-      }, $StaticEnvironment_declare_anonymous_blockarg$10.$$arity = 0);
+        return self.$declare($$('ANONYMOUS_BLOCKARG'))
+      }, 0);
       
-      Opal.def(self, '$declared_anonymous_blockarg?', $StaticEnvironment_declared_anonymous_blockarg$ques$11 = function() {
+      $def(self, '$declared_anonymous_blockarg?', function $StaticEnvironment_declared_anonymous_blockarg$ques$3() {
         var self = this;
 
-        return self['$declared?']($$($nesting, 'ANONYMOUS_BLOCKARG'))
-      }, $StaticEnvironment_declared_anonymous_blockarg$ques$11.$$arity = 0);
-      return (Opal.def(self, '$empty?', $StaticEnvironment_empty$ques$12 = function() {
+        return self['$declared?']($$('ANONYMOUS_BLOCKARG'))
+      }, 0);
+      return $def(self, '$empty?', function $StaticEnvironment_empty$ques$4() {
         var self = this;
 
         return self.stack['$empty?']()
-      }, $StaticEnvironment_empty$ques$12.$$arity = 0), nil) && 'empty?';
+      }, 0);
     })($nesting[0], null, $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/lexer"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_le(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs <= rhs : lhs['$<='](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_ge(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs >= rhs : lhs['$>='](rhs);
-  }
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $send = Opal.send, $hash = Opal.hash, $truthy = Opal.truthy, $hash2 = Opal.hash2, $range = Opal.range, $gvars = Opal.gvars;
-
-  Opal.add_stubs(['$attr_accessor', '$private', '$_lex_trans_keys=', '$-', '$_lex_key_spans=', '$_lex_index_offsets=', '$_lex_indicies=', '$_lex_trans_targs=', '$_lex_trans_actions=', '$_lex_to_state_actions=', '$_lex_from_state_actions=', '$_lex_eof_trans=', '$lex_start=', '$lex_error=', '$lex_en_interp_words=', '$lex_en_interp_string=', '$lex_en_plain_words=', '$lex_en_plain_string=', '$lex_en_interp_backslash_delimited=', '$lex_en_plain_backslash_delimited=', '$lex_en_interp_backslash_delimited_words=', '$lex_en_plain_backslash_delimited_words=', '$lex_en_regexp_modifiers=', '$lex_en_expr_variable=', '$lex_en_expr_fname=', '$lex_en_expr_endfn=', '$lex_en_expr_dot=', '$lex_en_expr_arg=', '$lex_en_expr_cmdarg=', '$lex_en_expr_endarg=', '$lex_en_expr_mid=', '$lex_en_expr_beg=', '$lex_en_expr_labelarg=', '$lex_en_expr_value=', '$lex_en_expr_end=', '$lex_en_leading_dot=', '$lex_en_line_comment=', '$lex_en_line_begin=', '$freeze', '$ord', '$union', '$chars', '$attr_reader', '$reset', '$lex_en_line_begin', '$class', '$new', '$source', '$==', '$encoding', '$unpack', '$[]', '$lex_en_expr_dot', '$lex_en_expr_fname', '$lex_en_expr_value', '$lex_en_expr_beg', '$lex_en_expr_mid', '$lex_en_expr_arg', '$lex_en_expr_cmdarg', '$lex_en_expr_end', '$lex_en_expr_endarg', '$lex_en_expr_endfn', '$lex_en_expr_labelarg', '$lex_en_interp_string', '$lex_en_interp_words', '$lex_en_plain_string', '$fetch', '$invert', '$push', '$count', '$pop', '$any?', '$shift', '$send', '$+', '$size', '$<=', '$===', '$<<', '$>', '$!=', '$emit_comment', '$tok', '$literal', '$flush_string', '$extend_content', '$emit', '$heredoc?', '$saved_herebody_s=', '$start_interp_brace', '$[]=', '$diagnostic', '$range', '$str_s', '$gsub', '$version?', '$nest_and_try_closing', '$heredoc_e', '$pop_literal', '$infer_indent_level', '$words?', '$!', '$eof_codepoint?', '$extend_space', '$extend_string', '$>=', '$active?', '$slice', '$start_with?', '$chr', '$munge_escape?', '$regexp?', '$match', '$squiggly_heredoc?', '$supports_line_continuation_via_slash?', '$include?', '$scan', '$join', '$=~', '$to_i', '$stack_pop', '$emit_table', '$push_literal', '$in_argdef', '$arg_or_cmdarg', '$<', '$emit_do', '$nil?', '$declared?', '$last', '$getbyte', '$inspect', '$end_with?', '$empty?', '$index', '$call', '$Float', '$to_f', '$length', '$lambda', '$Rational', '$Complex', '$each', '$encode_escape', '$%', '$in_kwarg', '$end_interp_brace_and_try_closing', '$lexpop', '$saved_herebody_s', '$next_state_for_literal', '$rstrip', '$&', '$|', '$lex_error', '$protected', '$force_encoding', '$process', '$backslash_delimited?', '$interpolate?', '$lex_en_interp_backslash_delimited_words', '$lex_en_plain_backslash_delimited_words', '$lex_en_plain_words', '$lex_en_interp_backslash_delimited', '$lex_en_plain_backslash_delimited', '$dedent_level', '$type', '$lex_en_regexp_modifiers', '$upcase']);
+Opal.modules["parser/lexer"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $const_set = Opal.const_set, $hash = Opal.hash, $def = Opal.def, $truthy = Opal.truthy, $eqeq = Opal.eqeq, $hash2 = Opal.hash2, $rb_plus = Opal.rb_plus, $to_ary = Opal.to_ary, $rb_le = Opal.rb_le, $eqeqeq = Opal.eqeqeq, $rb_gt = Opal.rb_gt, $neqeq = Opal.neqeq, $not = Opal.not, $rb_ge = Opal.rb_ge, $range = Opal.range, $rb_lt = Opal.rb_lt, $gvars = Opal.gvars;
+
+  Opal.add_stubs('attr_accessor,private,_lex_trans_keys=,-,_lex_key_spans=,_lex_index_offsets=,_lex_indicies=,_lex_trans_targs=,_lex_trans_actions=,_lex_to_state_actions=,_lex_from_state_actions=,_lex_eof_trans=,lex_start=,lex_error=,lex_en_interp_words=,lex_en_interp_string=,lex_en_plain_words=,lex_en_plain_string=,lex_en_interp_backslash_delimited=,lex_en_plain_backslash_delimited=,lex_en_interp_backslash_delimited_words=,lex_en_plain_backslash_delimited_words=,lex_en_regexp_modifiers=,lex_en_expr_variable=,lex_en_expr_fname=,lex_en_expr_endfn=,lex_en_expr_dot=,lex_en_expr_arg=,lex_en_expr_cmdarg=,lex_en_expr_endarg=,lex_en_expr_mid=,lex_en_expr_beg=,lex_en_expr_labelarg=,lex_en_expr_value=,lex_en_expr_end=,lex_en_leading_dot=,lex_en_line_comment=,lex_en_line_begin=,freeze,ord,union,chars,attr_reader,reset,lex_en_line_begin,class,new,source,==,encoding,unpack,[],lex_en_expr_dot,lex_en_expr_fname,lex_en_expr_value,lex_en_expr_beg,lex_en_expr_mid,lex_en_expr_arg,lex_en_expr_cmdarg,lex_en_expr_end,lex_en_expr_endarg,lex_en_expr_endfn,lex_en_expr_labelarg,lex_en_interp_string,lex_en_interp_words,lex_en_plain_string,fetch,invert,push,count,pop,any?,shift,send,+,size,<=,===,<<,>,!=,emit_comment,tok,literal,flush_string,extend_content,emit,heredoc?,saved_herebody_s=,start_interp_brace,[]=,diagnostic,range,str_s,gsub,version?,nest_and_try_closing,heredoc_e,pop_literal,infer_indent_level,!,eof_codepoint?,words?,extend_space,extend_string,active?,>=,slice,start_with?,chr,munge_escape?,match,regexp?,squiggly_heredoc?,supports_line_continuation_via_slash?,include?,scan,join,=~,to_i,stack_pop,emit_table,push_literal,in_argdef,arg_or_cmdarg,<,emit_do,declared?,nil?,last,getbyte,inspect,end_with?,empty?,index,call,Float,to_f,length,lambda,Rational,Complex,each,encode_escape,%,in_kwarg,end_interp_brace_and_try_closing,lexpop,saved_herebody_s,next_state_for_literal,rstrip,&,|,lex_error,protected,force_encoding,process,backslash_delimited?,interpolate?,lex_en_interp_backslash_delimited_words,lex_en_plain_backslash_delimited_words,lex_en_plain_words,lex_en_interp_backslash_delimited,lex_en_plain_backslash_delimited,dedent_level,type,lex_en_regexp_modifiers,upcase');
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Lexer');
 
-    var $nesting = [self].concat($parent_nesting), $Lexer_initialize$1, $Lexer_reset$2, $Lexer_source_buffer$eq$3, $Lexer_encoding$4, $Lexer_state$5, $Lexer_state$eq$6, $Lexer_push_cmdarg$7, $Lexer_pop_cmdarg$8, $Lexer_push_cond$9, $Lexer_pop_cond$10, $Lexer_dedent_level$11, $Lexer_advance$12, $Lexer_eof_codepoint$ques$42, $Lexer_version$ques$43, $Lexer_stack_pop$44, $Lexer_encode_escape$45, $Lexer_tok$46, $Lexer_range$47, $Lexer_emit$48, $Lexer_emit_table$49, $Lexer_emit_do$50, $Lexer_arg_or_cmdarg$51, $Lexer_emit_comment$52, $Lexer_diagnostic$53, $Lexer_push_literal$54, $Lexer_next_state_for_literal$55, $Lexer_literal$56, $Lexer_pop_literal$57, $Lexer$58, $writer = nil;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $writer = nil, $proto = self.$$prototype;
 
-    self.$$prototype.source_buffer = self.$$prototype.source_pts = self.$$prototype.cs = self.$$prototype.cmdarg_stack = self.$$prototype.cmdarg = self.$$prototype.cond_stack = self.$$prototype.cond = self.$$prototype.dedent_level = self.$$prototype.token_queue = self.$$prototype.p = self.$$prototype.command_start = self.$$prototype.herebody_s = self.$$prototype.sharp_s = self.$$prototype.ts = self.$$prototype.te = self.$$prototype.top = self.$$prototype.stack = self.$$prototype.version = self.$$prototype.escape_s = self.$$prototype.escape = self.$$prototype.act = self.$$prototype.context = self.$$prototype.static_env = self.$$prototype.newline_s = self.$$prototype.lambda_stack = self.$$prototype.paren_nest = self.$$prototype.num_digits_s = self.$$prototype.num_suffix_s = self.$$prototype.num_base = self.$$prototype.num_xfrm = self.$$prototype.eq_begin_s = self.$$prototype.cs_before_block_comment = self.$$prototype.tokens = self.$$prototype.comments = self.$$prototype.diagnostics = self.$$prototype.literal_stack = nil;
+    $proto.source_buffer = $proto.source_pts = $proto.cs = $proto.cmdarg_stack = $proto.cmdarg = $proto.cond_stack = $proto.cond = $proto.dedent_level = $proto.token_queue = $proto.p = $proto.command_start = $proto.herebody_s = $proto.sharp_s = $proto.ts = $proto.te = $proto.top = $proto.stack = $proto.version = $proto.escape_s = $proto.escape = $proto.act = $proto.context = $proto.static_env = $proto.newline_s = $proto.lambda_stack = $proto.paren_nest = $proto.num_digits_s = $proto.num_suffix_s = $proto.num_base = $proto.num_xfrm = $proto.eq_begin_s = $proto.cs_before_block_comment = $proto.tokens = $proto.comments = $proto.diagnostics = $proto.literal_stack = nil;
     
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       
       self.$attr_accessor("_lex_trans_keys");
       return self.$private("_lex_trans_keys", "_lex_trans_keys=");
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [[0, 0, 101, 101, 103, 103, 105, 105, 110, 110, 69, 69, 78, 78, 68, 68, 95, 95, 95, 95, 0, 26, 0, 127, 0, 127, 0, 127, 0, 127, 0, 45, 0, 120, 0, 120, 0, 92, 0, 120, 0, 120, 0, 45, 0, 120, 0, 120, 67, 99, 45, 45, 0, 92, 0, 120, 0, 102, 0, 127, 0, 127, 0, 127, 0, 127, 0, 45, 0, 120, 0, 120, 0, 92, 0, 120, 0, 120, 0, 45, 0, 120, 0, 120, 67, 99, 45, 45, 0, 92, 0, 120, 0, 102, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 58, 58, 58, 58, 46, 46, 0, 127, 58, 58, 60, 60, 62, 62, 10, 10, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 115, 115, 99, 99, 117, 117, 101, 101, 108, 116, 101, 101, 115, 115, 115, 115, 105, 105, 108, 108, 105, 105, 108, 108, 58, 58, 0, 127, 10, 10, 0, 127, 9, 92, 10, 10, 9, 92, 58, 58, 98, 98, 101, 101, 103, 103, 105, 105, 110, 110, 0, 127, 61, 61, 9, 92, 9, 92, 9, 92, 9, 92, 9, 92, 10, 10, 0, 127, 0, 127, 61, 126, 93, 93, 0, 127, 0, 127, 10, 10, 34, 34, 10, 10, 39, 39, 0, 127, 10, 96, 96, 96, 0, 45, 0, 120, 0, 120, 0, 92, 0, 120, 0, 120, 0, 45, 0, 120, 0, 120, 67, 99, 45, 45, 0, 92, 0, 120, 0, 102, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 58, 58, 58, 58, 0, 127, 43, 57, 48, 57, 48, 57, 48, 57, 48, 57, 115, 115, 99, 99, 117, 117, 101, 101, 99, 99, 117, 117, 101, 101, 0, 127, 58, 58, 9, 92, 9, 92, 9, 92, 9, 92, 9, 92, 9, 92, 60, 60, 10, 10, 9, 92, 9, 92, 10, 10, 10, 10, 10, 10, 10, 10, 46, 46, 0, 95, 9, 32, 0, 0, 10, 10, 10, 10, 98, 98, 9, 32, 10, 10, 95, 95, 0, 92, 9, 32, 36, 123, 0, 127, 48, 57, 0, 127, 0, 120, 0, 0, 0, 0, 48, 55, 48, 55, 0, 0, 0, 0, 0, 92, 0, 0, 0, 0, 0, 0, 0, 92, 45, 45, 0, 0, 0, 0, 0, 0, 0, 92, 48, 102, 48, 102, 0, 0, 48, 102, 48, 102, 0, 0, 0, 45, 0, 92, 0, 92, 0, 0, 0, 0, 0, 92, 48, 102, 48, 102, 0, 0, 0, 45, 10, 10, 0, 92, 48, 123, 48, 102, 48, 102, 48, 102, 0, 0, 0, 125, 0, 125, 0, 0, 0, 125, 0, 0, 0, 125, 0, 125, 0, 125, 0, 125, 0, 0, 0, 125, 0, 125, 0, 125, 0, 125, 0, 125, 0, 125, 0, 0, 0, 0, 48, 102, 0, 0, 0, 92, 36, 123, 0, 127, 48, 57, 0, 127, 0, 120, 0, 0, 0, 0, 48, 55, 48, 55, 0, 0, 0, 0, 0, 92, 0, 0, 0, 0, 0, 0, 0, 92, 45, 45, 0, 0, 0, 0, 0, 0, 0, 92, 48, 102, 48, 102, 0, 0, 48, 102, 48, 102, 0, 0, 0, 45, 0, 92, 0, 92, 0, 0, 0, 0, 0, 92, 48, 102, 48, 102, 0, 0, 0, 45, 10, 10, 0, 92, 48, 123, 48, 102, 48, 102, 48, 102, 0, 0, 0, 125, 0, 125, 0, 0, 0, 125, 0, 0, 0, 125, 0, 125, 0, 125, 0, 125, 0, 0, 0, 125, 0, 125, 0, 125, 0, 125, 0, 125, 0, 125, 0, 0, 0, 0, 48, 102, 0, 0, 0, 92, 9, 32, 0, 26, 0, 92, 0, 26, 0, 35, 36, 123, 0, 127, 48, 57, 0, 127, 0, 26, 0, 35, 9, 32, 36, 123, 0, 127, 48, 57, 0, 127, 0, 32, 9, 32, 65, 122, 65, 122, 36, 64, 0, 127, 48, 57, 0, 127, 0, 127, 0, 127, 0, 127, 9, 32, 0, 0, 61, 126, 10, 10, 10, 10, 0, 127, 0, 127, 48, 57, 115, 115, 38, 38, 42, 42, 64, 64, 58, 58, 60, 61, 62, 62, 61, 126, 61, 61, 61, 62, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 93, 93, 10, 10, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 124, 124, 0, 127, 0, 127, 9, 32, 10, 10, 10, 10, 46, 46, 10, 10, 0, 0, 0, 127, 0, 127, 61, 61, 0, 0, 9, 32, 0, 0, 61, 126, 10, 10, 10, 10, 38, 38, 42, 42, 64, 64, 60, 61, 62, 62, 61, 126, 61, 61, 61, 62, 0, 127, 93, 93, 10, 10, 124, 124, 0, 126, 0, 127, 0, 61, 9, 61, 9, 61, 0, 0, 9, 61, 9, 62, 46, 46, 46, 46, 58, 58, 9, 32, 0, 0, 0, 127, 0, 0, 9, 124, 0, 0, 10, 10, 10, 10, 0, 0, 9, 61, 58, 58, 60, 60, 62, 62, 9, 32, 10, 10, 0, 127, 102, 102, 101, 101, 110, 110, 104, 104, 0, 127, 0, 127, 0, 127, 0, 0, 0, 127, 10, 10, 0, 123, 9, 32, 10, 10, 10, 10, 10, 10, 0, 0, 111, 111, 0, 0, 0, 127, 0, 127, 9, 32, 0, 0, 10, 10, 10, 10, 10, 10, 0, 0, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 58, 61, 0, 0, 61, 126, 61, 61, 0, 0, 0, 0, 0, 0, 9, 32, 61, 61, 9, 32, 61, 126, 10, 10, 10, 10, 0, 127, 38, 61, 0, 0, 42, 61, 61, 61, 9, 92, 9, 92, 9, 92, 46, 46, 46, 46, 10, 10, 0, 26, 0, 127, 0, 127, 61, 61, 0, 0, 61, 126, 61, 62, 0, 0, 0, 0, 0, 0, 0, 0, 61, 126, 0, 127, 48, 57, 38, 38, 42, 42, 64, 64, 60, 61, 62, 62, 61, 61, 61, 62, 0, 127, 48, 57, 0, 127, 124, 124, 64, 64, 60, 61, 0, 0, 10, 34, 10, 39, 96, 96, 62, 62, 61, 126, 61, 62, 0, 122, 0, 0, 0, 127, 0, 127, 0, 120, 0, 0, 0, 0, 48, 55, 48, 55, 0, 0, 0, 0, 0, 92, 0, 0, 0, 0, 0, 0, 0, 92, 45, 45, 0, 0, 0, 0, 0, 0, 0, 92, 48, 102, 48, 102, 0, 0, 48, 102, 48, 102, 0, 0, 0, 45, 0, 92, 0, 92, 0, 0, 0, 0, 0, 92, 48, 102, 48, 102, 0, 0, 0, 45, 10, 10, 0, 92, 48, 123, 48, 102, 48, 102, 48, 102, 0, 0, 0, 125, 0, 125, 0, 0, 0, 125, 0, 0, 0, 125, 0, 125, 0, 125, 0, 125, 0, 0, 0, 125, 0, 125, 0, 125, 0, 125, 0, 125, 0, 125, 0, 125, 0, 125, 0, 125, 0, 125, 0, 125, 0, 125, 0, 125, 0, 125, 0, 125, 0, 125, 0, 125, 0, 125, 0, 125, 0, 0, 0, 0, 48, 102, 0, 0, 0, 127, 0, 127, 0, 127, 0, 0, 10, 10, 0, 0, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 61, 126, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 0, 61, 124, 0, 92, 9, 32, 0, 0, 10, 10, 10, 10, 10, 10, 0, 0, 0, 127, 0, 127, 9, 32, 0, 0, 10, 10, 10, 10, 10, 10, 0, 0, 0, 127, 0, 127, 61, 61, 0, 0, 9, 32, 0, 0, 61, 126, 10, 10, 10, 10, 0, 127, 0, 127, 48, 57, 61, 61, 38, 61, 0, 0, 0, 0, 42, 61, 61, 62, 46, 57, 46, 46, 10, 10, 48, 101, 48, 95, 46, 120, 48, 114, 43, 57, 48, 105, 102, 102, 0, 0, 101, 105, 0, 0, 0, 0, 48, 114, 48, 114, 48, 114, 48, 114, 105, 114, 102, 102, 0, 0, 101, 105, 115, 115, 0, 0, 0, 0, 48, 114, 48, 114, 48, 114, 48, 114, 48, 114, 48, 114, 48, 114, 48, 114, 46, 114, 48, 114, 46, 114, 48, 114, 58, 58, 60, 61, 62, 62, 61, 126, 61, 61, 61, 62, 0, 127, 0, 127, 0, 0, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 0, 10, 10, 0, 0, 0, 0, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 9, 92, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 0, 61, 124, 0, 0, 9, 92, 9, 92, 9, 92, 46, 46, 46, 46, 10, 10, 46, 46, 10, 10, 10, 61, 10, 10, 10, 101, 10, 110, 10, 100, 10, 10, 0]];
-    $send(self, '_lex_trans_keys=', Opal.to_a($writer));
+    $send(self, '_lex_trans_keys=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       
       self.$attr_accessor("_lex_key_spans");
       return self.$private("_lex_key_spans", "_lex_key_spans=");
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [[0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 27, 128, 128, 128, 128, 46, 121, 121, 93, 121, 121, 46, 121, 121, 33, 1, 93, 121, 103, 128, 128, 128, 128, 46, 121, 121, 93, 121, 121, 46, 121, 121, 33, 1, 93, 121, 103, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 1, 1, 1, 128, 1, 1, 1, 1, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 1, 1, 1, 1, 9, 1, 1, 1, 1, 1, 1, 1, 1, 128, 1, 128, 84, 1, 84, 1, 1, 1, 1, 1, 1, 128, 1, 84, 84, 84, 84, 84, 1, 128, 128, 66, 1, 128, 128, 1, 1, 1, 1, 128, 87, 1, 46, 121, 121, 93, 121, 121, 46, 121, 121, 33, 1, 93, 121, 103, 128, 128, 128, 128, 128, 128, 1, 1, 128, 15, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 128, 1, 84, 84, 84, 84, 84, 84, 1, 1, 84, 84, 1, 1, 1, 1, 1, 96, 24, 0, 1, 1, 1, 24, 1, 1, 93, 24, 88, 128, 10, 128, 121, 0, 0, 8, 8, 0, 0, 93, 0, 0, 0, 93, 1, 0, 0, 0, 93, 55, 55, 0, 55, 55, 0, 46, 93, 93, 0, 0, 93, 55, 55, 0, 46, 1, 93, 76, 55, 55, 55, 0, 126, 126, 0, 126, 0, 126, 126, 126, 126, 0, 126, 126, 126, 126, 126, 126, 0, 0, 55, 0, 93, 88, 128, 10, 128, 121, 0, 0, 8, 8, 0, 0, 93, 0, 0, 0, 93, 1, 0, 0, 0, 93, 55, 55, 0, 55, 55, 0, 46, 93, 93, 0, 0, 93, 55, 55, 0, 46, 1, 93, 76, 55, 55, 55, 0, 126, 126, 0, 126, 0, 126, 126, 126, 126, 0, 126, 126, 126, 126, 126, 126, 0, 0, 55, 0, 93, 24, 27, 93, 27, 36, 88, 128, 10, 128, 27, 36, 24, 88, 128, 10, 128, 33, 24, 58, 58, 29, 128, 10, 128, 128, 128, 128, 24, 0, 66, 1, 1, 128, 128, 10, 1, 1, 1, 1, 1, 2, 1, 66, 1, 2, 128, 128, 128, 128, 128, 128, 128, 1, 1, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 1, 128, 128, 24, 1, 1, 1, 1, 0, 128, 128, 1, 0, 24, 0, 66, 1, 1, 1, 1, 1, 2, 1, 66, 1, 2, 128, 1, 1, 1, 127, 128, 62, 53, 53, 0, 53, 54, 1, 1, 1, 24, 0, 128, 0, 116, 0, 1, 1, 0, 53, 1, 1, 1, 24, 1, 128, 1, 1, 1, 1, 128, 128, 128, 0, 128, 1, 124, 24, 1, 1, 1, 0, 1, 0, 128, 128, 24, 0, 1, 1, 1, 0, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 4, 0, 66, 1, 0, 0, 0, 24, 1, 24, 66, 1, 1, 128, 24, 0, 20, 1, 84, 84, 84, 1, 1, 1, 27, 128, 128, 1, 0, 66, 2, 0, 0, 0, 0, 66, 128, 10, 1, 1, 1, 2, 1, 1, 2, 128, 10, 128, 1, 1, 2, 0, 25, 30, 1, 1, 66, 2, 123, 0, 128, 128, 121, 0, 0, 8, 8, 0, 0, 93, 0, 0, 0, 93, 1, 0, 0, 0, 93, 55, 55, 0, 55, 55, 0, 46, 93, 93, 0, 0, 93, 55, 55, 0, 46, 1, 93, 76, 55, 55, 55, 0, 126, 126, 0, 126, 0, 126, 126, 126, 126, 0, 126, 126, 126, 126, 126, 126, 126, 126, 126, 126, 126, 126, 126, 126, 126, 126, 126, 126, 126, 0, 0, 55, 0, 128, 128, 128, 0, 1, 0, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 66, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 0, 64, 93, 24, 0, 1, 1, 1, 0, 128, 128, 24, 0, 1, 1, 1, 0, 128, 128, 1, 0, 24, 0, 66, 1, 1, 128, 128, 10, 1, 24, 0, 0, 20, 2, 12, 1, 1, 54, 48, 75, 67, 15, 58, 1, 0, 5, 0, 0, 67, 67, 67, 67, 10, 1, 0, 5, 1, 0, 0, 67, 67, 67, 67, 67, 67, 67, 67, 69, 67, 69, 67, 1, 2, 1, 66, 1, 2, 128, 128, 0, 128, 128, 128, 128, 128, 128, 0, 1, 0, 0, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 84, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 0, 64, 0, 84, 84, 84, 1, 1, 1, 1, 1, 52, 1, 92, 101, 91, 1]];
-    $send(self, '_lex_key_spans=', Opal.to_a($writer));
+    $send(self, '_lex_key_spans=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       
       self.$attr_accessor("_lex_index_offsets");
       return self.$private("_lex_index_offsets", "_lex_index_offsets=");
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [[0, 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 46, 175, 304, 433, 562, 609, 731, 853, 947, 1069, 1191, 1238, 1360, 1482, 1516, 1518, 1612, 1734, 1838, 1967, 2096, 2225, 2354, 2401, 2523, 2645, 2739, 2861, 2983, 3030, 3152, 3274, 3308, 3310, 3404, 3526, 3630, 3759, 3888, 4017, 4146, 4275, 4404, 4533, 4662, 4791, 4920, 5049, 5178, 5307, 5436, 5565, 5567, 5569, 5571, 5700, 5702, 5704, 5706, 5708, 5837, 5966, 6095, 6224, 6353, 6482, 6611, 6740, 6869, 6998, 7127, 7256, 7385, 7514, 7643, 7772, 7901, 8030, 8032, 8034, 8036, 8038, 8048, 8050, 8052, 8054, 8056, 8058, 8060, 8062, 8064, 8193, 8195, 8324, 8409, 8411, 8496, 8498, 8500, 8502, 8504, 8506, 8508, 8637, 8639, 8724, 8809, 8894, 8979, 9064, 9066, 9195, 9324, 9391, 9393, 9522, 9651, 9653, 9655, 9657, 9659, 9788, 9876, 9878, 9925, 10047, 10169, 10263, 10385, 10507, 10554, 10676, 10798, 10832, 10834, 10928, 11050, 11154, 11283, 11412, 11541, 11670, 11799, 11928, 11930, 11932, 12061, 12077, 12088, 12099, 12110, 12121, 12123, 12125, 12127, 12129, 12131, 12133, 12135, 12264, 12266, 12351, 12436, 12521, 12606, 12691, 12776, 12778, 12780, 12865, 12950, 12952, 12954, 12956, 12958, 12960, 13057, 13082, 13083, 13085, 13087, 13089, 13114, 13116, 13118, 13212, 13237, 13326, 13455, 13466, 13595, 13717, 13718, 13719, 13728, 13737, 13738, 13739, 13833, 13834, 13835, 13836, 13930, 13932, 13933, 13934, 13935, 14029, 14085, 14141, 14142, 14198, 14254, 14255, 14302, 14396, 14490, 14491, 14492, 14586, 14642, 14698, 14699, 14746, 14748, 14842, 14919, 14975, 15031, 15087, 15088, 15215, 15342, 15343, 15470, 15471, 15598, 15725, 15852, 15979, 15980, 16107, 16234, 16361, 16488, 16615, 16742, 16743, 16744, 16800, 16801, 16895, 16984, 17113, 17124, 17253, 17375, 17376, 17377, 17386, 17395, 17396, 17397, 17491, 17492, 17493, 17494, 17588, 17590, 17591, 17592, 17593, 17687, 17743, 17799, 17800, 17856, 17912, 17913, 17960, 18054, 18148, 18149, 18150, 18244, 18300, 18356, 18357, 18404, 18406, 18500, 18577, 18633, 18689, 18745, 18746, 18873, 19000, 19001, 19128, 19129, 19256, 19383, 19510, 19637, 19638, 19765, 19892, 20019, 20146, 20273, 20400, 20401, 20402, 20458, 20459, 20553, 20578, 20606, 20700, 20728, 20765, 20854, 20983, 20994, 21123, 21151, 21188, 21213, 21302, 21431, 21442, 21571, 21605, 21630, 21689, 21748, 21778, 21907, 21918, 22047, 22176, 22305, 22434, 22459, 22460, 22527, 22529, 22531, 22660, 22789, 22800, 22802, 22804, 22806, 22808, 22810, 22813, 22815, 22882, 22884, 22887, 23016, 23145, 23274, 23403, 23532, 23661, 23790, 23792, 23794, 23923, 24052, 24181, 24310, 24439, 24568, 24697, 24826, 24955, 25084, 25213, 25342, 25471, 25600, 25729, 25858, 25987, 26116, 26245, 26374, 26503, 26632, 26761, 26890, 27019, 27148, 27277, 27406, 27535, 27664, 27793, 27922, 28051, 28180, 28309, 28438, 28567, 28696, 28825, 28954, 29083, 29212, 29341, 29470, 29599, 29728, 29857, 29986, 30115, 30244, 30373, 30502, 30631, 30760, 30889, 31018, 31147, 31276, 31405, 31534, 31663, 31792, 31921, 32050, 32179, 32308, 32437, 32566, 32695, 32824, 32953, 33082, 33211, 33340, 33469, 33598, 33727, 33856, 33985, 34114, 34243, 34372, 34501, 34503, 34632, 34761, 34786, 34788, 34790, 34792, 34794, 34795, 34924, 35053, 35055, 35056, 35081, 35082, 35149, 35151, 35153, 35155, 35157, 35159, 35162, 35164, 35231, 35233, 35236, 35365, 35367, 35369, 35371, 35499, 35628, 35691, 35745, 35799, 35800, 35854, 35909, 35911, 35913, 35915, 35940, 35941, 36070, 36071, 36188, 36189, 36191, 36193, 36194, 36248, 36250, 36252, 36254, 36279, 36281, 36410, 36412, 36414, 36416, 36418, 36547, 36676, 36805, 36806, 36935, 36937, 37062, 37087, 37089, 37091, 37093, 37094, 37096, 37097, 37226, 37355, 37380, 37381, 37383, 37385, 37387, 37388, 37517, 37646, 37775, 37904, 38033, 38162, 38291, 38420, 38549, 38678, 38807, 38936, 39065, 39194, 39323, 39452, 39581, 39710, 39715, 39716, 39783, 39785, 39786, 39787, 39788, 39813, 39815, 39840, 39907, 39909, 39911, 40040, 40065, 40066, 40087, 40089, 40174, 40259, 40344, 40346, 40348, 40350, 40378, 40507, 40636, 40638, 40639, 40706, 40709, 40710, 40711, 40712, 40713, 40780, 40909, 40920, 40922, 40924, 40926, 40929, 40931, 40933, 40936, 41065, 41076, 41205, 41207, 41209, 41212, 41213, 41239, 41270, 41272, 41274, 41341, 41344, 41468, 41469, 41598, 41727, 41849, 41850, 41851, 41860, 41869, 41870, 41871, 41965, 41966, 41967, 41968, 42062, 42064, 42065, 42066, 42067, 42161, 42217, 42273, 42274, 42330, 42386, 42387, 42434, 42528, 42622, 42623, 42624, 42718, 42774, 42830, 42831, 42878, 42880, 42974, 43051, 43107, 43163, 43219, 43220, 43347, 43474, 43475, 43602, 43603, 43730, 43857, 43984, 44111, 44112, 44239, 44366, 44493, 44620, 44747, 44874, 45001, 45128, 45255, 45382, 45509, 45636, 45763, 45890, 46017, 46144, 46271, 46398, 46525, 46526, 46527, 46583, 46584, 46713, 46842, 46971, 46972, 46974, 46975, 47104, 47233, 47362, 47491, 47620, 47749, 47878, 48007, 48136, 48265, 48394, 48523, 48652, 48781, 48910, 49039, 49168, 49297, 49426, 49555, 49684, 49813, 49942, 50071, 50200, 50329, 50458, 50587, 50716, 50845, 50974, 51103, 51232, 51361, 51490, 51619, 51748, 51877, 52006, 52135, 52264, 52393, 52522, 52651, 52780, 52909, 53038, 53167, 53296, 53425, 53554, 53683, 53812, 53941, 54070, 54199, 54328, 54457, 54586, 54715, 54844, 54911, 55040, 55169, 55298, 55427, 55556, 55685, 55814, 55943, 56072, 56201, 56330, 56459, 56588, 56717, 56846, 56975, 57104, 57233, 57362, 57491, 57620, 57749, 57878, 58007, 58136, 58137, 58202, 58296, 58321, 58322, 58324, 58326, 58328, 58329, 58458, 58587, 58612, 58613, 58615, 58617, 58619, 58620, 58749, 58878, 58880, 58881, 58906, 58907, 58974, 58976, 58978, 59107, 59236, 59247, 59249, 59274, 59275, 59276, 59297, 59300, 59313, 59315, 59317, 59372, 59421, 59497, 59565, 59581, 59640, 59642, 59643, 59649, 59650, 59651, 59719, 59787, 59855, 59923, 59934, 59936, 59937, 59943, 59945, 59946, 59947, 60015, 60083, 60151, 60219, 60287, 60355, 60423, 60491, 60561, 60629, 60699, 60767, 60769, 60772, 60774, 60841, 60843, 60846, 60975, 61104, 61105, 61234, 61363, 61492, 61621, 61750, 61879, 61880, 61882, 61883, 61884, 62013, 62142, 62271, 62400, 62529, 62658, 62787, 62916, 63045, 63174, 63303, 63432, 63561, 63690, 63819, 63948, 64077, 64206, 64335, 64464, 64593, 64722, 64851, 64980, 65109, 65238, 65367, 65496, 65625, 65754, 65883, 66012, 66141, 66270, 66399, 66528, 66657, 66742, 66871, 67000, 67129, 67258, 67387, 67516, 67645, 67774, 67903, 68032, 68161, 68290, 68419, 68548, 68677, 68806, 68935, 69064, 69193, 69322, 69451, 69580, 69709, 69838, 69967, 70096, 70225, 70354, 70483, 70612, 70741, 70870, 70999, 71128, 71257, 71386, 71515, 71644, 71773, 71902, 72031, 72160, 72289, 72418, 72547, 72676, 72805, 72934, 73063, 73192, 73321, 73450, 73579, 73708, 73837, 73966, 74095, 74224, 74353, 74482, 74611, 74740, 74869, 74998, 75127, 75128, 75193, 75194, 75279, 75364, 75449, 75451, 75453, 75455, 75457, 75459, 75512, 75514, 75607, 75709, 75801]];
-    $send(self, '_lex_index_offsets=', Opal.to_a($writer));
+    $send(self, '_lex_index_offsets=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       
       self.$attr_accessor("_lex_indicies");
       return self.$private("_lex_indicies", "_lex_indicies=");
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [[1, 0, 2, 0, 3, 0, 4, 0, 5, 0, 6, 0, 7, 0, 8, 0, 9, 0, 10, 0, 0, 0, 10, 0, 0, 0, 0, 0, 11, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 10, 0, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 14, 14, 12, 14, 12, 14, 14, 12, 12, 14, 14, 14, 15, 14, 14, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 14, 12, 12, 13, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 14, 12, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 12, 12, 12, 12, 12, 12, 12, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 12, 12, 12, 12, 14, 12, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 12, 12, 12, 12, 12, 14, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 12, 12, 12, 12, 12, 12, 18, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 13, 12, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 13, 12, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 13, 19, 20, 20, 20, 19, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 21, 20, 19, 22, 22, 22, 19, 22, 22, 22, 22, 22, 23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 19, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 24, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 25, 22, 19, 22, 22, 22, 19, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 19, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 26, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 25, 22, 19, 27, 27, 27, 19, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 19, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 28, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 29, 27, 19, 30, 30, 30, 19, 30, 30, 30, 30, 30, 31, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 19, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 32, 30, 19, 30, 30, 30, 19, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 19, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 32, 30, 19, 20, 20, 20, 19, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 33, 20, 19, 34, 34, 34, 19, 34, 34, 34, 34, 34, 35, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 19, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 36, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 37, 34, 34, 34, 34, 34, 34, 38, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 39, 34, 19, 34, 34, 34, 19, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 19, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 39, 34, 40, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 41, 19, 41, 19, 19, 42, 42, 42, 19, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 19, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 43, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 44, 42, 19, 22, 22, 22, 19, 22, 22, 22, 22, 22, 23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 19, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 26, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 25, 22, 19, 45, 45, 45, 19, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 19, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 45, 45, 45, 45, 45, 45, 45, 46, 46, 46, 46, 46, 46, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 46, 46, 46, 46, 46, 46, 45, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 49, 49, 47, 49, 47, 49, 49, 47, 47, 49, 49, 49, 50, 49, 49, 51, 51, 51, 51, 51, 51, 51, 51, 51, 51, 49, 49, 49, 49, 49, 49, 49, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 47, 49, 47, 47, 48, 49, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 47, 47, 47, 49, 47, 48, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 47, 47, 47, 47, 47, 47, 47, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 47, 47, 47, 47, 49, 47, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 47, 47, 47, 47, 47, 49, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 47, 47, 47, 47, 47, 47, 53, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 47, 47, 47, 47, 48, 47, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 47, 47, 47, 47, 47, 48, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 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1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1539, 1533, 1541, 1539, 0]];
-    $send(self, '_lex_indicies=', Opal.to_a($writer));
+    $send(self, '_lex_indicies=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       
       self.$attr_accessor("_lex_trans_targs");
       return self.$private("_lex_trans_targs", "_lex_trans_targs=");
     })(Opal.get_singleton_class(self), $nesting);
     
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795, 801, 795, 803, 802, 802, 804, 805, 802, 806, 808, 802, 802, 802, 802, 807, 802, 807, 809, 802, 811, 810, 810, 814, 815, 816, 810, 817, 819, 822, 823, 824, 825, 826, 810, 827, 828, 833, 861, 865, 810, 866, 868, 870, 810, 871, 872, 874, 878, 880, 881, 883, 884, 902, 907, 914, 922, 929, 936, 941, 942, 946, 940, 951, 961, 967, 970, 979, 983, 987, 988, 989, 822, 812, 810, 813, 810, 810, 810, 810, 810, 810, 818, 810, 818, 810, 156, 821, 810, 810, 810, 810, 810, 810, 810, 810, 810, 829, 810, 830, 810, 810, 157, 159, 810, 160, 842, 853, 856, 835, 857, 858, 843, 847, 849, 810, 835, 160, 837, 839, 161, 810, 837, 810, 838, 810, 810, 162, 841, 810, 810, 844, 846, 810, 844, 845, 847, 849, 846, 810, 848, 810, 810, 850, 852, 810, 166, 810, 810, 810, 854, 846, 847, 849, 854, 855, 810, 844, 846, 847, 849, 810, 844, 846, 847, 849, 810, 859, 846, 847, 849, 859, 860, 810, 160, 861, 835, 862, 847, 849, 863, 846, 160, 863, 835, 864, 867, 869, 810, 169, 170, 810, 810, 875, 876, 877, 872, 879, 810, 810, 882, 810, 810, 810, 885, 886, 895, 900, 887, 888, 889, 890, 891, 892, 893, 894, 811, 896, 897, 898, 899, 811, 901, 903, 906, 904, 905, 811, 811, 908, 911, 909, 910, 912, 913, 811, 915, 917, 916, 918, 919, 920, 810, 810, 923, 811, 924, 810, 925, 926, 927, 928, 812, 930, 933, 931, 932, 934, 935, 937, 938, 939, 811, 943, 944, 945, 947, 949, 950, 948, 811, 952, 953, 954, 957, 955, 956, 958, 959, 960, 962, 964, 963, 965, 966, 968, 969, 971, 972, 974, 977, 973, 975, 976, 978, 980, 981, 982, 984, 985, 986, 810, 810, 990, 991, 995, 996, 997, 990, 990, 990, 994, 990, 990, 999, 998, 1000, 998, 1001, 1002, 1003, 998, 998]];
-    $send(self, '_lex_trans_targs=', Opal.to_a($writer));
+    $send(self, '_lex_trans_targs=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       
       self.$attr_accessor("_lex_trans_actions");
       return self.$private("_lex_trans_actions", "_lex_trans_actions=");
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [[1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 3, 4, 0, 5, 0, 0, 0, 0, 6, 0, 7, 0, 8, 0, 0, 7, 0, 0, 0, 0, 8, 0, 7, 0, 8, 0, 7, 7, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 10, 0, 0, 0, 0, 11, 0, 7, 0, 8, 0, 0, 7, 0, 0, 0, 0, 8, 0, 7, 0, 8, 0, 7, 7, 0, 0, 0, 0, 0, 0, 0, 0, 12, 0, 13, 0, 0, 0, 0, 14, 0, 15, 0, 0, 0, 0, 0, 16, 0, 0, 0, 0, 0, 0, 17, 18, 19, 20, 21, 0, 0, 0, 22, 23, 24, 0, 0, 25, 26, 27, 28, 29, 30, 30, 31, 32, 30, 33, 32, 34, 32, 30, 30, 31, 30, 35, 30, 30, 36, 30, 30, 30, 30, 30, 30, 0, 37, 38, 0, 39, 38, 40, 38, 0, 0, 37, 0, 41, 0, 0, 0, 0, 0, 0, 0, 0, 28, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 42, 0, 0, 0, 0, 0, 0, 0, 0, 0, 43, 44, 45, 46, 0, 0, 0, 46, 29, 47, 30, 30, 30, 47, 48, 0, 49, 0, 29, 30, 50, 30, 51, 52, 53, 0, 0, 0, 0, 0, 54, 55, 56, 0, 29, 0, 57, 0, 30, 58, 30, 59, 30, 60, 61, 62, 61, 63, 61, 0, 64, 65, 64, 66, 64, 67, 68, 0, 69, 0, 0, 0, 0, 70, 70, 0, 0, 71, 71, 72, 0, 29, 73, 0, 0, 0, 70, 0, 74, 0, 7, 0, 8, 0, 0, 7, 0, 0, 0, 0, 8, 0, 7, 0, 8, 0, 7, 7, 0, 0, 0, 0, 0, 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-    $send(self, '_lex_trans_actions=', Opal.to_a($writer));
+    $send(self, '_lex_trans_actions=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       
       self.$attr_accessor("_lex_to_state_actions");
       return self.$private("_lex_to_state_actions", "_lex_to_state_actions=");
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 96, 0, 0, 0, 0, 0, 0, 0, 0, 96, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 96, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 96, 0, 0, 96, 0, 96, 0, 0, 0, 0, 96, 96, 0, 0, 0, 0, 0, 96, 0, 96, 0, 96, 0, 0, 0, 0, 96, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 96, 0, 0, 0, 0, 0, 0, 0, 96, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 96, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 96, 0, 0, 0, 0, 0, 96, 0, 0, 0, 0, 0, 0, 0, 96, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 96, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 96, 0, 0, 0, 0, 0, 0, 96, 0, 0, 0, 0, 0, 0, 0, 96, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 96, 0, 0, 0, 0, 0, 0, 0, 96, 0, 0, 0, 0, 0]];
-    $send(self, '_lex_to_state_actions=', Opal.to_a($writer));
+    $send(self, '_lex_to_state_actions=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       
       self.$attr_accessor("_lex_from_state_actions");
       return self.$private("_lex_from_state_actions", "_lex_from_state_actions=");
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 97, 0, 0, 0, 0, 0, 0, 0, 0, 97, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 97, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 97, 0, 0, 97, 0, 97, 0, 0, 0, 0, 97, 97, 0, 0, 0, 0, 0, 97, 0, 97, 0, 97, 0, 0, 0, 0, 97, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 97, 0, 0, 0, 0, 0, 0, 0, 97, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 97, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 97, 0, 0, 0, 0, 0, 97, 0, 0, 0, 0, 0, 0, 0, 97, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 97, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 97, 0, 0, 0, 0, 0, 0, 97, 0, 0, 0, 0, 0, 0, 0, 97, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 97, 0, 0, 0, 0, 0, 0, 0, 97, 0, 0, 0, 0, 0]];
-    $send(self, '_lex_from_state_actions=', Opal.to_a($writer));
+    $send(self, '_lex_from_state_actions=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       
       self.$attr_accessor("_lex_eof_trans");
       return self.$private("_lex_eof_trans", "_lex_eof_trans=");
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [[0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 13, 13, 13, 13, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 48, 48, 48, 48, 55, 55, 55, 55, 55, 55, 55, 55, 55, 55, 55, 55, 55, 55, 83, 83, 83, 83, 90, 90, 90, 90, 0, 0, 0, 0, 105, 107, 109, 109, 109, 109, 115, 115, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 180, 180, 180, 180, 180, 180, 180, 180, 180, 180, 180, 180, 190, 192, 192, 192, 204, 204, 204, 212, 214, 214, 214, 214, 214, 220, 212, 212, 212, 212, 212, 212, 212, 246, 246, 246, 246, 246, 246, 212, 262, 212, 262, 246, 246, 212, 268, 268, 268, 268, 268, 268, 268, 268, 268, 268, 268, 268, 268, 268, 212, 246, 246, 246, 246, 303, 303, 303, 308, 310, 310, 310, 314, 314, 317, 317, 317, 317, 322, 322, 322, 308, 314, 314, 314, 314, 314, 314, 314, 314, 314, 353, 360, 362, 362, 362, 362, 353, 0, 378, 379, 380, 382, 384, 386, 384, 384, 0, 396, 397, 401, 401, 402, 403, 412, 413, 414, 414, 414, 417, 417, 419, 420, 421, 421, 421, 423, 424, 425, 425, 425, 428, 428, 421, 431, 431, 421, 417, 417, 436, 437, 437, 437, 440, 440, 437, 437, 437, 443, 443, 443, 443, 449, 450, 450, 450, 450, 458, 450, 450, 450, 450, 463, 450, 450, 450, 450, 450, 450, 469, 470, 471, 471, 0, 478, 482, 482, 483, 484, 493, 494, 495, 495, 495, 498, 498, 500, 501, 502, 502, 502, 504, 505, 506, 506, 506, 509, 509, 502, 512, 512, 502, 498, 498, 517, 518, 518, 518, 521, 521, 518, 518, 518, 524, 524, 524, 524, 530, 531, 531, 531, 531, 539, 531, 531, 531, 531, 544, 531, 531, 531, 531, 531, 531, 550, 551, 552, 552, 0, 559, 560, 0, 566, 0, 573, 577, 577, 578, 0, 0, 587, 588, 592, 592, 593, 0, 598, 0, 601, 0, 604, 604, 605, 606, 0, 647, 649, 650, 651, 652, 654, 656, 660, 660, 651, 651, 651, 651, 662, 651, 651, 656, 651, 651, 647, 666, 666, 666, 666, 666, 666, 656, 656, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 705, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 651, 0, 749, 750, 751, 753, 749, 749, 757, 0, 776, 778, 780, 781, 782, 783, 784, 786, 783, 783, 783, 783, 783, 789, 783, 783, 791, 789, 789, 783, 0, 810, 811, 115, 115, 814, 815, 115, 811, 811, 818, 820, 823, 811, 824, 811, 825, 826, 828, 830, 811, 818, 831, 831, 820, 831, 835, 831, 831, 831, 831, 0, 190, 843, 844, 843, 843, 0, 853, 854, 856, 858, 860, 858, 862, 0, 874, 875, 876, 877, 879, 881, 883, 884, 884, 884, 884, 884, 884, 884, 884, 884, 884, 884, 884, 884, 884, 884, 884, 0, 942, 945, 948, 949, 953, 955, 956, 957, 958, 959, 961, 964, 965, 967, 969, 972, 974, 975, 212, 972, 977, 972, 964, 979, 981, 964, 964, 999, 1002, 1004, 1005, 1009, 1012, 1013, 1014, 1015, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 1019, 1023, 1025, 999, 999, 964, 1030, 1031, 1031, 1031, 964, 964, 964, 1032, 1039, 1039, 1041, 1043, 1052, 1053, 1054, 1054, 1054, 1057, 1057, 1059, 1060, 1061, 1061, 1061, 1063, 1064, 1065, 1065, 1065, 1068, 1068, 1061, 1071, 1071, 1061, 1057, 1057, 1076, 1077, 1077, 1077, 1080, 1080, 1077, 1077, 1077, 1083, 1083, 1083, 1083, 1089, 1090, 1090, 1090, 1090, 1098, 1090, 1090, 1090, 1090, 1104, 1090, 1090, 1090, 1090, 1090, 1090, 1090, 1090, 1090, 1090, 1090, 1090, 1090, 1090, 1090, 1090, 1090, 1090, 1090, 1122, 1123, 1124, 1124, 212, 964, 964, 1128, 964, 959, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 212, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 1181, 949, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 1206, 964, 0, 1214, 1215, 1216, 1218, 1220, 1222, 0, 1231, 1232, 1233, 1234, 1236, 1231, 1239, 0, 314, 1294, 1296, 1297, 1298, 1299, 1301, 1303, 1305, 1308, 1308, 314, 1310, 1312, 1313, 1314, 1310, 1316, 1318, 1318, 1321, 1321, 1324, 1335, 314, 1341, 1343, 1345, 1346, 1349, 1350, 1324, 1324, 1353, 1353, 1353, 1359, 1361, 1362, 1365, 1367, 1368, 1369, 1353, 1353, 1376, 1381, 1386, 1353, 1353, 1393, 1393, 1353, 1353, 1318, 1310, 1310, 1318, 1310, 1310, 1305, 314, 1411, 1412, 1412, 1412, 1412, 1412, 1412, 1418, 1305, 1421, 1422, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1462, 1463, 1423, 1423, 1467, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1521, 1299, 1522, 0, 1528, 1529, 1530, 1532, 1528, 1528, 1528, 0, 1537, 1537, 1537, 1537, 1541]];
-    $send(self, '_lex_eof_trans=', Opal.to_a($writer));
+    $send(self, '_lex_eof_trans=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_start")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [186];
-    $send(self, 'lex_start=', Opal.to_a($writer));
+    $send(self, 'lex_start=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_error")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [0];
-    $send(self, 'lex_error=', Opal.to_a($writer));
+    $send(self, 'lex_error=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_interp_words")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [195];
-    $send(self, 'lex_en_interp_words=', Opal.to_a($writer));
+    $send(self, 'lex_en_interp_words=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_interp_string")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [261];
-    $send(self, 'lex_en_interp_string=', Opal.to_a($writer));
+    $send(self, 'lex_en_interp_string=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_plain_words")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [326];
-    $send(self, 'lex_en_plain_words=', Opal.to_a($writer));
+    $send(self, 'lex_en_plain_words=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_plain_string")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [329];
-    $send(self, 'lex_en_plain_string=', Opal.to_a($writer));
+    $send(self, 'lex_en_plain_string=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_interp_backslash_delimited")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [331];
-    $send(self, 'lex_en_interp_backslash_delimited=', Opal.to_a($writer));
+    $send(self, 'lex_en_interp_backslash_delimited=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_plain_backslash_delimited")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [336];
-    $send(self, 'lex_en_plain_backslash_delimited=', Opal.to_a($writer));
+    $send(self, 'lex_en_plain_backslash_delimited=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_interp_backslash_delimited_words")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [337];
-    $send(self, 'lex_en_interp_backslash_delimited_words=', Opal.to_a($writer));
+    $send(self, 'lex_en_interp_backslash_delimited_words=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_plain_backslash_delimited_words")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [343];
-    $send(self, 'lex_en_plain_backslash_delimited_words=', Opal.to_a($writer));
+    $send(self, 'lex_en_plain_backslash_delimited_words=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_regexp_modifiers")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [345];
-    $send(self, 'lex_en_regexp_modifiers=', Opal.to_a($writer));
+    $send(self, 'lex_en_regexp_modifiers=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_expr_variable")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [347];
-    $send(self, 'lex_en_expr_variable=', Opal.to_a($writer));
+    $send(self, 'lex_en_expr_variable=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_expr_fname")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [352];
-    $send(self, 'lex_en_expr_fname=', Opal.to_a($writer));
+    $send(self, 'lex_en_expr_fname=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_expr_endfn")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [465];
-    $send(self, 'lex_en_expr_endfn=', Opal.to_a($writer));
+    $send(self, 'lex_en_expr_endfn=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_expr_dot")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [473];
-    $send(self, 'lex_en_expr_dot=', Opal.to_a($writer));
+    $send(self, 'lex_en_expr_dot=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_expr_arg")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [494];
-    $send(self, 'lex_en_expr_arg=', Opal.to_a($writer));
+    $send(self, 'lex_en_expr_arg=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_expr_cmdarg")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [525];
-    $send(self, 'lex_en_expr_cmdarg=', Opal.to_a($writer));
+    $send(self, 'lex_en_expr_cmdarg=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_expr_endarg")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [531];
-    $send(self, 'lex_en_expr_endarg=', Opal.to_a($writer));
+    $send(self, 'lex_en_expr_endarg=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_expr_mid")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [539];
-    $send(self, 'lex_en_expr_mid=', Opal.to_a($writer));
+    $send(self, 'lex_en_expr_mid=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_expr_beg")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [563];
-    $send(self, 'lex_en_expr_beg=', Opal.to_a($writer));
+    $send(self, 'lex_en_expr_beg=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_expr_labelarg")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [795];
-    $send(self, 'lex_en_expr_labelarg=', Opal.to_a($writer));
+    $send(self, 'lex_en_expr_labelarg=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_expr_value")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [802];
-    $send(self, 'lex_en_expr_value=', Opal.to_a($writer));
+    $send(self, 'lex_en_expr_value=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_expr_end")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [810];
-    $send(self, 'lex_en_expr_end=', Opal.to_a($writer));
+    $send(self, 'lex_en_expr_end=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_leading_dot")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [990];
-    $send(self, 'lex_en_leading_dot=', Opal.to_a($writer));
+    $send(self, 'lex_en_leading_dot=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_line_comment")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [998];
-    $send(self, 'lex_en_line_comment=', Opal.to_a($writer));
+    $send(self, 'lex_en_line_comment=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_line_begin")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [186];
-    $send(self, 'lex_en_line_begin=', Opal.to_a($writer));
+    $send(self, 'lex_en_line_begin=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
-    Opal.const_set($nesting[0], 'ESCAPES', $hash("a".$ord(), "\u0007", "b".$ord(), "\b", "e".$ord(), "\u001b", "f".$ord(), "\f", "n".$ord(), "\n", "r".$ord(), "\r", "s".$ord(), " ", "t".$ord(), "\t", "v".$ord(), "\v", "\\".$ord(), "\\").$freeze());
-    Opal.const_set($nesting[0], 'REGEXP_META_CHARACTERS', $send($$($nesting, 'Regexp'), 'union', Opal.to_a("\\$()*+.<>?[]^{|}".$chars())).$freeze());
+    $const_set($nesting[0], 'ESCAPES', $hash("a".$ord(), "\u0007", "b".$ord(), "\b", "e".$ord(), "\u001b", "f".$ord(), "\f", "n".$ord(), "\n", "r".$ord(), "\r", "s".$ord(), " ", "t".$ord(), "\t", "v".$ord(), "\v", "\\".$ord(), "\\").$freeze());
+    $const_set($nesting[0], 'REGEXP_META_CHARACTERS', $send($$('Regexp'), 'union', $to_a("\\$()*+.<>?[]^{|}".$chars())).$freeze());
     self.$attr_reader("source_buffer");
     self.$attr_accessor("diagnostics");
     self.$attr_accessor("static_env");
@@ -8755,7 +7496,7 @@ Opal.modules["parser/lexer"] = function(Opal) {
     self.$attr_accessor("tokens", "comments");
     self.$attr_reader("paren_nest", "cmdarg_stack", "cond_stack", "lambda_stack");
     
-    Opal.def(self, '$initialize', $Lexer_initialize$1 = function $$initialize(version) {
+    $def(self, '$initialize', function $$initialize(version) {
       var self = this;
 
       
@@ -8765,23 +7506,22 @@ Opal.modules["parser/lexer"] = function(Opal) {
       self.tokens = nil;
       self.comments = nil;
       return self.$reset();
-    }, $Lexer_initialize$1.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$reset', $Lexer_reset$2 = function $$reset(reset_state) {
+    $def(self, '$reset', function $$reset(reset_state) {
       var self = this;
 
       
       
-      if (reset_state == null) {
-        reset_state = true;
-      };
+      if (reset_state == null) reset_state = true;;
       if ($truthy(reset_state)) {
         
         self.cs = self.$class().$lex_en_line_begin();
-        self.cond = $$($nesting, 'StackState').$new("cond");
-        self.cmdarg = $$($nesting, 'StackState').$new("cmdarg");
+        self.cond = $$('StackState').$new("cond");
+        self.cmdarg = $$('StackState').$new("cmdarg");
         self.cond_stack = [];
-        self.cmdarg_stack = [];};
+        self.cmdarg_stack = [];
+      };
       self.force_utf32 = false;
       self.source_pts = nil;
       self.p = 0;
@@ -8807,9 +7547,9 @@ Opal.modules["parser/lexer"] = function(Opal) {
       self.dedent_level = nil;
       self.command_start = true;
       return (self.cs_before_block_comment = self.$class().$lex_en_line_begin());
-    }, $Lexer_reset$2.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$source_buffer=', $Lexer_source_buffer$eq$3 = function(source_buffer) {
+    $def(self, '$source_buffer=', function $Lexer_source_buffer$eq$1(source_buffer) {
       var self = this, source = nil;
 
       
@@ -8817,12 +7557,12 @@ Opal.modules["parser/lexer"] = function(Opal) {
       if ($truthy(self.source_buffer)) {
         
         source = self.source_buffer.$source();
-        if (source.$encoding()['$==']($$$($$($nesting, 'Encoding'), 'UTF_8'))) {
+        if ($eqeq(source.$encoding(), $$$($$('Encoding'), 'UTF_8'))) {
           self.source_pts = source.$unpack("U*")
         } else {
           self.source_pts = source.$unpack("C*")
         };
-        if (self.source_pts['$[]'](0)['$=='](65279)) {
+        if ($eqeq(self.source_pts['$[]'](0), 65279)) {
           return (self.p = 1)
         } else {
           return nil
@@ -8830,69 +7570,70 @@ Opal.modules["parser/lexer"] = function(Opal) {
       } else {
         return (self.source_pts = nil)
       };
-    }, $Lexer_source_buffer$eq$3.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$encoding', $Lexer_encoding$4 = function $$encoding() {
+    $def(self, '$encoding', function $$encoding() {
       var self = this;
 
       return self.source_buffer.$source().$encoding()
-    }, $Lexer_encoding$4.$$arity = 0);
-    Opal.const_set($nesting[0], 'LEX_STATES', $hash2(["line_begin", "expr_dot", "expr_fname", "expr_value", "expr_beg", "expr_mid", "expr_arg", "expr_cmdarg", "expr_end", "expr_endarg", "expr_endfn", "expr_labelarg", "interp_string", "interp_words", "plain_string", "plain_words"], {"line_begin": self.$lex_en_line_begin(), "expr_dot": self.$lex_en_expr_dot(), "expr_fname": self.$lex_en_expr_fname(), "expr_value": self.$lex_en_expr_value(), "expr_beg": self.$lex_en_expr_beg(), "expr_mid": self.$lex_en_expr_mid(), "expr_arg": self.$lex_en_expr_arg(), "expr_cmdarg": self.$lex_en_expr_cmdarg(), "expr_end": self.$lex_en_expr_end(), "expr_endarg": self.$lex_en_expr_endarg(), "expr_endfn": self.$lex_en_expr_endfn(), "expr_labelarg": self.$lex_en_expr_labelarg(), "interp_string": self.$lex_en_interp_string(), "interp_words": self.$lex_en_interp_words(), "plain_string": self.$lex_en_plain_string(), "plain_words": self.$lex_en_plain_string()}));
+    }, 0);
+    $const_set($nesting[0], 'LEX_STATES', $hash2(["line_begin", "expr_dot", "expr_fname", "expr_value", "expr_beg", "expr_mid", "expr_arg", "expr_cmdarg", "expr_end", "expr_endarg", "expr_endfn", "expr_labelarg", "interp_string", "interp_words", "plain_string", "plain_words"], {"line_begin": self.$lex_en_line_begin(), "expr_dot": self.$lex_en_expr_dot(), "expr_fname": self.$lex_en_expr_fname(), "expr_value": self.$lex_en_expr_value(), "expr_beg": self.$lex_en_expr_beg(), "expr_mid": self.$lex_en_expr_mid(), "expr_arg": self.$lex_en_expr_arg(), "expr_cmdarg": self.$lex_en_expr_cmdarg(), "expr_end": self.$lex_en_expr_end(), "expr_endarg": self.$lex_en_expr_endarg(), "expr_endfn": self.$lex_en_expr_endfn(), "expr_labelarg": self.$lex_en_expr_labelarg(), "interp_string": self.$lex_en_interp_string(), "interp_words": self.$lex_en_interp_words(), "plain_string": self.$lex_en_plain_string(), "plain_words": self.$lex_en_plain_string()}));
     
-    Opal.def(self, '$state', $Lexer_state$5 = function $$state() {
+    $def(self, '$state', function $$state() {
       var self = this;
 
-      return $$($nesting, 'LEX_STATES').$invert().$fetch(self.cs, self.cs)
-    }, $Lexer_state$5.$$arity = 0);
+      return $$('LEX_STATES').$invert().$fetch(self.cs, self.cs)
+    }, 0);
     
-    Opal.def(self, '$state=', $Lexer_state$eq$6 = function(state) {
+    $def(self, '$state=', function $Lexer_state$eq$2(state) {
       var self = this;
 
-      return (self.cs = $$($nesting, 'LEX_STATES').$fetch(state))
-    }, $Lexer_state$eq$6.$$arity = 1);
+      return (self.cs = $$('LEX_STATES').$fetch(state))
+    }, 1);
     
-    Opal.def(self, '$push_cmdarg', $Lexer_push_cmdarg$7 = function $$push_cmdarg() {
+    $def(self, '$push_cmdarg', function $$push_cmdarg() {
       var self = this;
 
       
       self.cmdarg_stack.$push(self.cmdarg);
-      return (self.cmdarg = $$($nesting, 'StackState').$new("" + "cmdarg." + (self.cmdarg_stack.$count())));
-    }, $Lexer_push_cmdarg$7.$$arity = 0);
+      return (self.cmdarg = $$('StackState').$new("cmdarg." + (self.cmdarg_stack.$count())));
+    }, 0);
     
-    Opal.def(self, '$pop_cmdarg', $Lexer_pop_cmdarg$8 = function $$pop_cmdarg() {
+    $def(self, '$pop_cmdarg', function $$pop_cmdarg() {
       var self = this;
 
       return (self.cmdarg = self.cmdarg_stack.$pop())
-    }, $Lexer_pop_cmdarg$8.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$push_cond', $Lexer_push_cond$9 = function $$push_cond() {
+    $def(self, '$push_cond', function $$push_cond() {
       var self = this;
 
       
       self.cond_stack.$push(self.cond);
-      return (self.cond = $$($nesting, 'StackState').$new("" + "cond." + (self.cond_stack.$count())));
-    }, $Lexer_push_cond$9.$$arity = 0);
+      return (self.cond = $$('StackState').$new("cond." + (self.cond_stack.$count())));
+    }, 0);
     
-    Opal.def(self, '$pop_cond', $Lexer_pop_cond$10 = function $$pop_cond() {
+    $def(self, '$pop_cond', function $$pop_cond() {
       var self = this;
 
       return (self.cond = self.cond_stack.$pop())
-    }, $Lexer_pop_cond$10.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$dedent_level', $Lexer_dedent_level$11 = function $$dedent_level() {
+    $def(self, '$dedent_level', function $$dedent_level() {
       var $a, self = this, dedent_level = nil;
 
       
       $a = [self.dedent_level, nil], (dedent_level = $a[0]), (self.dedent_level = $a[1]), $a;
       return dedent_level;
-    }, $Lexer_dedent_level$11.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$advance', $Lexer_advance$12 = function $$advance() {
-      var $a, $b, $$13, $$14, $$15, $$16, $$17, $$18, $$19, $$20, $$21, $$22, $$23, $$24, $$25, $$26, $$27, $$28, $$29, $$30, $$31, $$32, $$33, $$34, $$35, $$36, $$37, $$38, $$39, $$40, $$41, self = this, klass = nil, _lex_trans_keys = nil, _lex_key_spans = nil, _lex_index_offsets = nil, _lex_indicies = nil, _lex_trans_targs = nil, _lex_trans_actions = nil, _lex_to_state_actions = nil, _lex_from_state_actions = nil, _lex_eof_trans = nil, pe = nil, p = nil, eof = nil, cmd_state = nil, testEof = nil, _slen = nil, _trans = nil, _keys = nil, _inds = nil, _acts = nil, _nacts = nil, _goto_level = nil, _resume = nil, _eof_trans = nil, _again = nil, _test_eof = nil, _out = nil, $case = nil, _wide = nil, $ret_or_1 = nil, $ret_or_2 = nil, $ret_or_3 = nil, tm = nil, heredoc_e = nil, diag_msg = nil, ident_tok = nil, ident_ts = nil, ident_te = nil, current_literal = nil, $writer = nil, line = nil, $ret_or_4 = nil, string = nil, $ret_or_5 = nil, lookahead = nil, $ret_or_6 = nil, token = nil, message = nil, $ret_or_7 = nil, $ret_or_8 = nil, escaped_char = nil, $ret_or_9 = nil, $ret_or_10 = nil, $ret_or_11 = nil, $ret_or_12 = nil, $ret_or_13 = nil, $ret_or_14 = nil, $ret_or_15 = nil, $ret_or_16 = nil, $ret_or_17 = nil, $ret_or_18 = nil, $ret_or_19 = nil, $ret_or_20 = nil, $ret_or_21 = nil, $ret_or_22 = nil, $ret_or_23 = nil, $ret_or_24 = nil, $ret_or_25 = nil, $ret_or_26 = nil, $ret_or_27 = nil, $ret_or_28 = nil, $ret_or_29 = nil, $ret_or_30 = nil, $ret_or_31 = nil, $ret_or_32 = nil, $ret_or_33 = nil, $ret_or_34 = nil, $ret_or_35 = nil, $ret_or_36 = nil, $ret_or_37 = nil, $ret_or_38 = nil, $ret_or_39 = nil, $ret_or_40 = nil, $ret_or_41 = nil, $ret_or_42 = nil, $ret_or_43 = nil, $ret_or_44 = nil, $ret_or_45 = nil, $ret_or_46 = nil, $ret_or_47 = nil, $ret_or_48 = nil, $ret_or_49 = nil, $ret_or_50 = nil, $ret_or_51 = nil, $ret_or_52 = nil, $ret_or_53 = nil, $ret_or_54 = nil, $ret_or_55 = nil, $ret_or_56 = nil, $ret_or_57 = nil, $ret_or_58 = nil, $ret_or_59 = nil, unknown_options = nil, type = nil, delimiter = nil, $ret_or_60 = nil, escape = nil, ident = nil, $ret_or_61 = nil, $ret_or_62 = nil, $ret_or_63 = nil, followed_by_nl = nil, nl_emitted = nil, dots_te = nil, $ret_or_64 = nil, $ret_or_65 = nil, $ret_or_66 = nil, $ret_or_67 = nil, $ret_or_68 = nil, value = nil, $ret_or_69 = nil, $ret_or_70 = nil, $ret_or_71 = nil, $ret_or_72 = nil, digits = nil, $ret_or_73 = nil, $ret_or_74 = nil, $ret_or_75 = nil, invalid_idx = nil, invalid_s = nil, $ret_or_76 = nil, $ret_or_77 = nil, $ret_or_78 = nil, $ret_or_79 = nil, $ret_or_80 = nil, $ret_or_81 = nil, $ret_or_82 = nil, $ret_or_83 = nil, $ret_or_84 = nil, $ret_or_85 = nil, $ret_or_86 = nil, $ret_or_87 = nil, $ret_or_88 = nil, $ret_or_89 = nil, $ret_or_90 = nil, $ret_or_91 = nil, $ret_or_92 = nil, $ret_or_93 = nil, $ret_or_94 = nil, $ret_or_95 = nil, $ret_or_96 = nil, $ret_or_97 = nil, $ret_or_98 = nil, $ret_or_99 = nil, $ret_or_100 = nil, $ret_or_101 = nil, $ret_or_102 = nil, $ret_or_103 = nil, $ret_or_104 = nil, $ret_or_105 = nil, $ret_or_106 = nil, $ret_or_107 = nil, $ret_or_108 = nil, $ret_or_109 = nil, $ret_or_110 = nil, $ret_or_111 = nil, codepoints = nil, codepoint_s = nil, $ret_or_112 = nil, spaces_p = nil, $ret_or_113 = nil, $ret_or_114 = nil, $ret_or_115 = nil, $ret_or_116 = nil, $ret_or_117 = nil, $ret_or_118 = nil, $ret_or_119 = nil, $ret_or_120 = nil, $ret_or_121 = nil, $ret_or_122 = nil, $ret_or_123 = nil, $ret_or_124 = nil, $ret_or_125 = nil, $ret_or_126 = nil, $ret_or_127 = nil, $ret_or_128 = nil, $ret_or_129 = nil, $ret_or_130 = nil, codepoint = nil, $ret_or_131 = nil, $ret_or_132 = nil, $ret_or_133 = nil, $ret_or_134 = nil, $ret_or_135 = nil, $ret_or_136 = nil, $ret_or_137 = nil, $ret_or_138 = nil, $ret_or_139 = nil, $ret_or_140 = nil, $ret_or_141 = nil, $ret_or_142 = nil, $ret_or_143 = nil, $ret_or_144 = nil, $ret_or_145 = nil, $ret_or_146 = nil, $ret_or_147 = nil, $ret_or_148 = nil, $ret_or_149 = nil, $ret_or_150 = nil, $ret_or_151 = nil, $ret_or_152 = nil, $ret_or_153 = nil, $ret_or_154 = nil, $ret_or_155 = nil, $ret_or_156 = nil, $ret_or_157 = nil, $ret_or_158 = nil, $ret_or_159 = nil, $ret_or_160 = nil, $ret_or_161 = nil, $ret_or_162 = nil, $ret_or_163 = nil, $ret_or_164 = nil, $ret_or_165 = nil, $ret_or_166 = nil, $ret_or_167 = nil, $ret_or_168 = nil, $ret_or_169 = nil, $ret_or_170 = nil, $ret_or_171 = nil, $ret_or_172 = nil, $ret_or_173 = nil, $ret_or_174 = nil, $ret_or_175 = nil, $ret_or_176 = nil, $ret_or_177 = nil, $ret_or_178 = nil, $ret_or_179 = nil, $ret_or_180 = nil, $ret_or_181 = nil, $ret_or_182 = nil, $ret_or_183 = nil, $ret_or_184 = nil, $ret_or_185 = nil, $ret_or_186 = nil, $ret_or_187 = nil, $ret_or_188 = nil, $ret_or_189 = nil, $ret_or_190 = nil, $ret_or_191 = nil, $ret_or_192 = nil, $ret_or_193 = nil, $ret_or_194 = nil, $ret_or_195 = nil, $ret_or_196 = nil, $ret_or_197 = nil, $ret_or_198 = nil, $ret_or_199 = nil, $ret_or_200 = nil, $ret_or_201 = nil, $ret_or_202 = nil, $ret_or_203 = nil, $ret_or_204 = nil, $ret_or_205 = nil, $ret_or_206 = nil, $ret_or_207 = nil, $ret_or_208 = nil, $ret_or_209 = nil, $ret_or_210 = nil, $ret_or_211 = nil, $ret_or_212 = nil, $ret_or_213 = nil, $ret_or_214 = nil, $ret_or_215 = nil, $ret_or_216 = nil, $ret_or_217 = nil, $ret_or_218 = nil, $ret_or_219 = nil, $ret_or_220 = nil, $ret_or_221 = nil, $ret_or_222 = nil, $ret_or_223 = nil, $ret_or_224 = nil, $ret_or_225 = nil, $ret_or_226 = nil, $ret_or_227 = nil, $ret_or_228 = nil, $ret_or_229 = nil, $ret_or_230 = nil, $ret_or_231 = nil, $ret_or_232 = nil, $ret_or_233 = nil, $ret_or_234 = nil, $ret_or_235 = nil, $ret_or_236 = nil, $ret_or_237 = nil, $ret_or_238 = nil, $ret_or_239 = nil, $ret_or_240 = nil, $ret_or_241 = nil, $ret_or_242 = nil, $ret_or_243 = nil, $ret_or_244 = nil, $ret_or_245 = nil, $ret_or_246 = nil, $ret_or_247 = nil, $ret_or_248 = nil, $ret_or_249 = nil, $ret_or_250 = nil, $ret_or_251 = nil, $ret_or_252 = nil, $ret_or_253 = nil, $ret_or_254 = nil, $ret_or_255 = nil, $ret_or_256 = nil, $ret_or_257 = nil, $ret_or_258 = nil, $ret_or_259 = nil, $ret_or_260 = nil, $ret_or_261 = nil, $ret_or_262 = nil, $ret_or_263 = nil, $ret_or_264 = nil, $ret_or_265 = nil, $ret_or_266 = nil, $ret_or_267 = nil, $ret_or_268 = nil, $ret_or_269 = nil, $ret_or_270 = nil, $ret_or_271 = nil, $ret_or_272 = nil, $ret_or_273 = nil, $ret_or_274 = nil, $ret_or_275 = nil, $ret_or_276 = nil, $ret_or_277 = nil, $ret_or_278 = nil, $ret_or_279 = nil, $ret_or_280 = nil, $ret_or_281 = nil, $ret_or_282 = nil, $ret_or_283 = nil, $ret_or_284 = nil, $ret_or_285 = nil, $ret_or_286 = nil, $ret_or_287 = nil, $ret_or_288 = nil, $ret_or_289 = nil, $ret_or_290 = nil, $ret_or_291 = nil, $ret_or_292 = nil, $ret_or_293 = nil, $ret_or_294 = nil, $ret_or_295 = nil, $ret_or_296 = nil, $ret_or_297 = nil, $ret_or_298 = nil, $ret_or_299 = nil, $ret_or_300 = nil, $ret_or_301 = nil, $ret_or_302 = nil, $ret_or_303 = nil, new_herebody_s = nil, indent = nil, $ret_or_304 = nil, dedent_body = nil, $ret_or_305 = nil, $ret_or_306 = nil, $ret_or_307 = nil, $ret_or_308 = nil, $ret_or_309 = nil, $ret_or_310 = nil, $ret_or_311 = nil, $ret_or_312 = nil, $ret_or_313 = nil, $ret_or_314 = nil, $ret_or_315 = nil, $ret_or_316 = nil, $ret_or_317 = nil, $ret_or_318 = nil, $ret_or_319 = nil, $ret_or_320 = nil, $ret_or_321 = nil, $ret_or_322 = nil, $ret_or_323 = nil, $ret_or_324 = nil, $ret_or_325 = nil, $ret_or_326 = nil, $ret_or_327 = nil, $ret_or_328 = nil, $ret_or_329 = nil, $ret_or_330 = nil, $ret_or_331 = nil, $ret_or_332 = nil, $ret_or_333 = nil, $ret_or_334 = nil, $ret_or_335 = nil, $ret_or_336 = nil, $ret_or_337 = nil, $ret_or_338 = nil, $ret_or_339 = nil, $ret_or_340 = nil, $ret_or_341 = nil, $ret_or_342 = nil, $ret_or_343 = nil, $ret_or_344 = nil, $ret_or_345 = nil, $ret_or_346 = nil, $ret_or_347 = nil, $ret_or_348 = nil, $ret_or_349 = nil, $ret_or_350 = nil, $ret_or_351 = nil, $ret_or_352 = nil, $ret_or_353 = nil, $ret_or_354 = nil, $ret_or_355 = nil, $ret_or_356 = nil, $ret_or_357 = nil, $ret_or_358 = nil, $ret_or_359 = nil, $ret_or_360 = nil, $ret_or_361 = nil, $ret_or_362 = nil, $ret_or_363 = nil, $ret_or_364 = nil, $ret_or_365 = nil, $ret_or_366 = nil, $ret_or_367 = nil, $ret_or_368 = nil, $ret_or_369 = nil, $ret_or_370 = nil, $ret_or_371 = nil, $ret_or_372 = nil, $ret_or_373 = nil, $ret_or_374 = nil, $ret_or_375 = nil, $ret_or_376 = nil, $ret_or_377 = nil, $ret_or_378 = nil, $ret_or_379 = nil, $ret_or_380 = nil, $ret_or_381 = nil, $ret_or_382 = nil, $ret_or_383 = nil, $ret_or_384 = nil, $ret_or_385 = nil, $ret_or_386 = nil, $ret_or_387 = nil, $ret_or_388 = nil, $ret_or_389 = nil, $ret_or_390 = nil, $ret_or_391 = nil, $ret_or_392 = nil, $ret_or_393 = nil, $ret_or_394 = nil, $ret_or_395 = nil, $ret_or_396 = nil, $ret_or_397 = nil, $ret_or_398 = nil, $ret_or_399 = nil, $ret_or_400 = nil, $ret_or_401 = nil, $ret_or_402 = nil, $ret_or_403 = nil, $ret_or_404 = nil, $ret_or_405 = nil, $ret_or_406 = nil, $ret_or_407 = nil, $ret_or_408 = nil, $ret_or_409 = nil, $ret_or_410 = nil, $ret_or_411 = nil, $ret_or_412 = nil, $ret_or_413 = nil, $ret_or_414 = nil, $ret_or_415 = nil, $ret_or_416 = nil, $ret_or_417 = nil, $ret_or_418 = nil, $ret_or_419 = nil, $ret_or_420 = nil, $ret_or_421 = nil, $ret_or_422 = nil, $ret_or_423 = nil, $ret_or_424 = nil, $ret_or_425 = nil, $ret_or_426 = nil, $ret_or_427 = nil, $ret_or_428 = nil, $ret_or_429 = nil, $ret_or_430 = nil, $ret_or_431 = nil, $ret_or_432 = nil, $ret_or_433 = nil, $ret_or_434 = nil, $ret_or_435 = nil, $ret_or_436 = nil, $ret_or_437 = nil, $ret_or_438 = nil, $ret_or_439 = nil, $ret_or_440 = nil, $ret_or_441 = nil, $ret_or_442 = nil, $ret_or_443 = nil, $ret_or_444 = nil, $ret_or_445 = nil, $ret_or_446 = nil, $ret_or_447 = nil, $ret_or_448 = nil, $ret_or_449 = nil, $ret_or_450 = nil, $ret_or_451 = nil, $ret_or_452 = nil, $ret_or_453 = nil, $ret_or_454 = nil, $ret_or_455 = nil, $ret_or_456 = nil, $ret_or_457 = nil, $ret_or_458 = nil, $ret_or_459 = nil, $ret_or_460 = nil, $ret_or_461 = nil, $ret_or_462 = nil, $ret_or_463 = nil, $ret_or_464 = nil, $ret_or_465 = nil, $ret_or_466 = nil, $ret_or_467 = nil, $ret_or_468 = nil, $ret_or_469 = nil, $ret_or_470 = nil, $ret_or_471 = nil, $ret_or_472 = nil, $ret_or_473 = nil, $ret_or_474 = nil, $ret_or_475 = nil, $ret_or_476 = nil, $ret_or_477 = nil, $ret_or_478 = nil, $ret_or_479 = nil, $ret_or_480 = nil, $ret_or_481 = nil, $ret_or_482 = nil, $ret_or_483 = nil, $ret_or_484 = nil, $ret_or_485 = nil, $ret_or_486 = nil, $ret_or_487 = nil, $ret_or_488 = nil, $ret_or_489 = nil, $ret_or_490 = nil, $ret_or_491 = nil, $ret_or_492 = nil, $ret_or_493 = nil, $ret_or_494 = nil, $ret_or_495 = nil, $ret_or_496 = nil, $ret_or_497 = nil, $ret_or_498 = nil, $ret_or_499 = nil, $ret_or_500 = nil, $ret_or_501 = nil, $ret_or_502 = nil, $ret_or_503 = nil, $ret_or_504 = nil, $ret_or_505 = nil, $ret_or_506 = nil, $ret_or_507 = nil, $ret_or_508 = nil, $ret_or_509 = nil, $ret_or_510 = nil, $ret_or_511 = nil, $ret_or_512 = nil, $ret_or_513 = nil, $ret_or_514 = nil, $ret_or_515 = nil, $ret_or_516 = nil, $ret_or_517 = nil, $ret_or_518 = nil, $ret_or_519 = nil, $ret_or_520 = nil, $ret_or_521 = nil, $ret_or_522 = nil;
+    $def(self, '$advance', function $$advance() {
+      var $a, $b, self = this, klass = nil, _lex_trans_keys = nil, _lex_key_spans = nil, _lex_index_offsets = nil, _lex_indicies = nil, _lex_trans_targs = nil, _lex_trans_actions = nil, _lex_to_state_actions = nil, _lex_from_state_actions = nil, _lex_eof_trans = nil, pe = nil, p = nil, eof = nil, cmd_state = nil, testEof = nil, _slen = nil, _trans = nil, _keys = nil, _inds = nil, _acts = nil, _nacts = nil, _goto_level = nil, _resume = nil, _eof_trans = nil, _again = nil, _test_eof = nil, _out = nil, $ret_or_1 = nil, _wide = nil, tm = nil, heredoc_e = nil, diag_msg = nil, ident_tok = nil, ident_ts = nil, ident_te = nil, current_literal = nil, $writer = nil, line = nil, string = nil, lookahead = nil, token = nil, message = nil, escaped_char = nil, $ret_or_2 = nil, unknown_options = nil, type = nil, delimiter = nil, escape = nil, ident = nil, followed_by_nl = nil, nl_emitted = nil, dots_te = nil, value = nil, digits = nil, invalid_idx = nil, invalid_s = nil, codepoints = nil, codepoint_s = nil, spaces_p = nil, codepoint = nil, new_herebody_s = nil, indent = nil, dedent_body = nil;
 
       
       if ($truthy(self.token_queue['$any?']())) {
-        return self.token_queue.$shift()};
+        return self.token_queue.$shift()
+      };
       klass = self.$class();
       _lex_trans_keys = klass.$send("_lex_trans_keys");
       _lex_key_spans = klass.$send("_lex_key_spans");
@@ -8909,7 +7650,7 @@ Opal.modules["parser/lexer"] = function(Opal) {
       self.command_start = false;
       
       testEof = false;
-      $b = nil, $a = Opal.to_ary($b), (_slen = ($a[0] == null ? nil : $a[0])), (_trans = ($a[1] == null ? nil : $a[1])), (_keys = ($a[2] == null ? nil : $a[2])), (_inds = ($a[3] == null ? nil : $a[3])), (_acts = ($a[4] == null ? nil : $a[4])), (_nacts = ($a[5] == null ? nil : $a[5])), $b;
+      $b = nil, $a = $to_ary($b), (_slen = ($a[0] == null ? nil : $a[0])), (_trans = ($a[1] == null ? nil : $a[1])), (_keys = ($a[2] == null ? nil : $a[2])), (_inds = ($a[3] == null ? nil : $a[3])), (_acts = ($a[4] == null ? nil : $a[4])), (_nacts = ($a[5] == null ? nil : $a[5])), $b;
       _goto_level = 0;
       _resume = 10;
       _eof_trans = 15;
@@ -8920,11015 +7661,9462 @@ Opal.modules["parser/lexer"] = function(Opal) {
         
         if ($truthy($rb_le(_goto_level, 0))) {
           
-          if (p['$=='](pe)) {
+          if ($eqeq(p, pe)) {
             
             _goto_level = _test_eof;
-            continue;;};
-          if (self.cs['$=='](0)) {
+            continue;;
+          };
+          if ($eqeq(self.cs, 0)) {
             
             _goto_level = _out;
-            continue;;};};
+            continue;;
+          };
+        };
         if ($truthy($rb_le(_goto_level, _resume))) {
           
-          $case = _lex_from_state_actions['$[]'](self.cs);
-          if ((97)['$===']($case)) {
-          self.ts = p;};
+          if ($eqeqeq(97, ($ret_or_1 = _lex_from_state_actions['$[]'](self.cs)))) {
+            
+            self.ts = p;
+          } else {
+            nil
+          };
           _keys = self.cs['$<<'](1);
           _inds = _lex_index_offsets['$[]'](self.cs);
           _slen = _lex_key_spans['$[]'](self.cs);
-          _wide = (function() {if ($truthy(($ret_or_1 = self.source_pts['$[]'](p)))) {
-            return $ret_or_1
-          } else {
-            return 0
-          }; return nil; })();
-          _trans = (function() {if ($truthy((function() {if ($truthy(($ret_or_2 = (function() {if ($truthy(($ret_or_3 = $rb_gt(_slen, 0)))) {
-            return $rb_le(_lex_trans_keys['$[]'](_keys), _wide)
-          } else {
-            return $ret_or_3
-          }; return nil; })()))) {
-            return $rb_le(_wide, _lex_trans_keys['$[]']($rb_plus(_keys, 1)))
-          } else {
-            return $ret_or_2
-          }; return nil; })())) {
-            return _lex_indicies['$[]']($rb_minus($rb_plus(_inds, _wide), _lex_trans_keys['$[]'](_keys)))
-          } else {
-            return _lex_indicies['$[]']($rb_plus(_inds, _slen))
-          }; return nil; })();};
+          _wide = ($truthy(($ret_or_1 = self.source_pts['$[]'](p))) ? ($ret_or_1) : (0));
+          _trans = ((($truthy($rb_gt(_slen, 0)) && ($truthy($rb_le(_lex_trans_keys['$[]'](_keys), _wide)))) && ($truthy($rb_le(_wide, _lex_trans_keys['$[]']($rb_plus(_keys, 1)))))) ? (_lex_indicies['$[]']($rb_minus($rb_plus(_inds, _wide), _lex_trans_keys['$[]'](_keys)))) : (_lex_indicies['$[]']($rb_plus(_inds, _slen))));
+        };
         if ($truthy($rb_le(_goto_level, _eof_trans))) {
           
           self.cs = _lex_trans_targs['$[]'](_trans);
-          if ($truthy(_lex_trans_actions['$[]'](_trans)['$!='](0))) {
-            $case = _lex_trans_actions['$[]'](_trans);
-            if ((29)['$===']($case)) {
-            self.newline_s = p;}
-            else if ((117)['$===']($case)) {
-            self.escape_s = p;
-            self.escape = nil;}
-            else if ((30)['$===']($case)) {
-            if ($truthy(self.herebody_s)) {
-              
-              p = self.herebody_s;
-              self.herebody_s = nil;};}
-            else if ((60)['$===']($case)) {
-            self.sharp_s = $rb_minus(p, 1);}
-            else if ((64)['$===']($case)) {
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());}
-            else if ((310)['$===']($case)) {
-            tm = p;}
-            else if ((37)['$===']($case)) {
-            tm = p;}
-            else if ((39)['$===']($case)) {
-            tm = p;}
-            else if ((41)['$===']($case)) {
-            tm = p;}
-            else if ((71)['$===']($case)) {
-            heredoc_e = p;}
-            else if ((349)['$===']($case)) {
-            tm = $rb_minus(p, 1);
-            diag_msg = "ivar_name";}
-            else if ((352)['$===']($case)) {
-            tm = $rb_minus(p, 2);
-            diag_msg = "cvar_name";}
-            else if ((360)['$===']($case)) {
-            self.escape = nil;}
-            else if ((392)['$===']($case)) {
-            tm = p;}
-            else if ((308)['$===']($case)) {
-            ident_tok = self.$tok();
-            ident_ts = self.ts;
-            ident_te = self.te;}
-            else if ((479)['$===']($case)) {
-            self.num_base = 16;
-            self.num_digits_s = p;}
-            else if ((473)['$===']($case)) {
-            self.num_base = 10;
-            self.num_digits_s = p;}
-            else if ((476)['$===']($case)) {
-            self.num_base = 8;
-            self.num_digits_s = p;}
-            else if ((470)['$===']($case)) {
-            self.num_base = 2;
-            self.num_digits_s = p;}
-            else if ((485)['$===']($case)) {
-            self.num_base = 10;
-            self.num_digits_s = self.ts;}
-            else if ((447)['$===']($case)) {
-            self.num_base = 8;
-            self.num_digits_s = self.ts;}
-            else if ((462)['$===']($case)) {
-            self.num_suffix_s = p;}
-            else if ((455)['$===']($case)) {
-            self.num_suffix_s = p;}
-            else if ((452)['$===']($case)) {
-            self.num_suffix_s = p;}
-            else if ((89)['$===']($case)) {
-            tm = p;}
-            else if ((7)['$===']($case)) {
-            self.te = $rb_plus(p, 1);}
-            else if ((113)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            current_literal.$flush_string();
-            current_literal.$extend_content();
-            self.$emit("tSTRING_DBEG", "\#{".$freeze());
-            if ($truthy(current_literal['$heredoc?']())) {
-              
-              
-              $writer = [self.herebody_s];
-              $send(current_literal, 'saved_herebody_s=', Opal.to_a($writer));
-              $writer[$rb_minus($writer["length"], 1)];;
-              self.herebody_s = nil;};
-            current_literal.$start_interp_brace();
-            self.command_start = true;
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((5)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            current_literal.$flush_string();
-            current_literal.$extend_content();
-            self.$emit("tSTRING_DVAR", nil, self.ts, $rb_plus(self.ts, 1));
-            p = self.ts;
-            
-            
-            $writer = [self.top, self.cs];
-            $send(self.stack, '[]=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];;
-            self.top = $rb_plus(self.top, 1);
-            self.cs = 347;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((109)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            if (self.te['$=='](pe)) {
-              self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))};
-            if ($truthy(current_literal['$heredoc?']())) {
-              
-              line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
-              if ($truthy(self['$version?'](18, 19, 20))) {
-                line = line.$gsub(/\r.*$/, "".$freeze())};
-              if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
-                
-                self.herebody_s = self.te;
-                p = $rb_minus(current_literal.$heredoc_e(), 1);
-                self.cs = self.$pop_literal();
-                
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;
-              } else {
-                
-                current_literal.$infer_indent_level(line);
-                self.herebody_s = self.te;
-              };
-            } else {
+          if ($neqeq(_lex_trans_actions['$[]'](_trans), 0)) {
+            if ($eqeqeq(29, ($ret_or_1 = _lex_trans_actions['$[]'](_trans)))) {
+              
+              self.newline_s = p;
+            } else if ($eqeqeq(117, $ret_or_1)) {
+              
+              self.escape_s = p;
+              self.escape = nil;
+            } else if ($eqeqeq(30, $ret_or_1)) {
               
-              if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
-                
-                self.cs = self.$pop_literal();
-                
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;};
               if ($truthy(self.herebody_s)) {
                 
-                p = $rb_minus(self.herebody_s, 1);
-                self.herebody_s = nil;};
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_4 = current_literal['$words?']()))) {
-              return self['$eof_codepoint?'](self.source_pts['$[]'](p))['$!']()
-            } else {
-              return $ret_or_4
-            }; return nil; })())) {
-              current_literal.$extend_space(self.ts, self.te)
-            } else {
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };
+            } else if ($eqeqeq(60, $ret_or_1)) {
               
-              current_literal.$extend_string(self.$tok(), self.ts, self.te);
-              current_literal.$flush_string();
-            };;}
-            else if ((108)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            string = self.$tok();
-            if ($truthy((function() {if ($truthy(($ret_or_5 = $rb_ge(self.version, 22)))) {
-              return self.cond['$active?']()['$!']()
-            } else {
-              return $ret_or_5
-            }; return nil; })())) {
-              lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))};
-            current_literal = self.$literal();
-            if ($truthy((function() {if ($truthy(($ret_or_6 = current_literal['$heredoc?']()['$!']()))) {
+              self.sharp_s = $rb_minus(p, 1);
+            } else if ($eqeqeq(64, $ret_or_1)) {
               
-              return (token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead));
-            } else {
-              return $ret_or_6
-            }; return nil; })())) {
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));
+            } else if ($eqeqeq(310, $ret_or_1)) {
               
-              if (token['$[]'](0)['$==']("tLABEL_END")) {
-                
-                p = $rb_plus(p, 1);
-                self.$pop_literal();
-                self.cs = 795;
-              } else {
-                self.cs = self.$pop_literal()
-              };
+              tm = p;
+            } else if ($eqeqeq(37, $ret_or_1)) {
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
-              current_literal.$extend_string(string, self.ts, self.te)
-            };;}
-            else if ((115)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            if ($truthy($rb_ge(self.version, 27))) {
-              self.$literal().$extend_string(self.$tok(), self.ts, self.te)
-            } else {
+              tm = p;
+            } else if ($eqeqeq(39, $ret_or_1)) {
               
-              message = (function() {if ($truthy(self.$tok()['$start_with?']("\#@@"))) {
-                return "cvar_name"
-              } else {
-                return "ivar_name"
-              }; return nil; })();
-              self.$diagnostic("error", message, $hash2(["name"], {"name": self.$tok($rb_plus(self.ts, 1), self.te)}), self.$range($rb_plus(self.ts, 1), self.te));
-            };;}
-            else if ((114)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            current_literal.$flush_string();
-            current_literal.$extend_content();
-            self.$emit("tSTRING_DVAR", nil, self.ts, $rb_plus(self.ts, 1));
-            p = self.ts;
-            
-            
-            $writer = [self.top, self.cs];
-            $send(self.stack, '[]=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];;
-            self.top = $rb_plus(self.top, 1);
-            self.cs = 347;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((111)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$literal().$extend_space(self.ts, self.te);;}
-            else if ((112)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            string = self.$tok();
-            if ($truthy((function() {if ($truthy(($ret_or_7 = $rb_ge(self.version, 22)))) {
-              return self.cond['$active?']()['$!']()
-            } else {
-              return $ret_or_7
-            }; return nil; })())) {
-              lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))};
-            current_literal = self.$literal();
-            if ($truthy((function() {if ($truthy(($ret_or_8 = current_literal['$heredoc?']()['$!']()))) {
+              tm = p;
+            } else if ($eqeqeq(41, $ret_or_1)) {
               
-              return (token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead));
-            } else {
-              return $ret_or_8
-            }; return nil; })())) {
+              tm = p;
+            } else if ($eqeqeq(71, $ret_or_1)) {
               
-              if (token['$[]'](0)['$==']("tLABEL_END")) {
-                
-                p = $rb_plus(p, 1);
-                self.$pop_literal();
-                self.cs = 795;
-              } else {
-                self.cs = self.$pop_literal()
-              };
+              heredoc_e = p;
+            } else if ($eqeqeq(349, $ret_or_1)) {
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
-              current_literal.$extend_string(string, self.ts, self.te)
-            };;}
-            else if ((6)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_9 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_9
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
-              } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_10 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_10
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_11 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_11
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_12 = (function() {if ($truthy(($ret_or_13 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_13
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_12
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_14 = self.escape))) {
-                return $ret_or_14
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;}
-            else if ((4)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            string = self.$tok();
-            if ($truthy((function() {if ($truthy(($ret_or_15 = $rb_ge(self.version, 22)))) {
-              return self.cond['$active?']()['$!']()
-            } else {
-              return $ret_or_15
-            }; return nil; })())) {
-              lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))};
-            current_literal = self.$literal();
-            if ($truthy((function() {if ($truthy(($ret_or_16 = current_literal['$heredoc?']()['$!']()))) {
+              tm = $rb_minus(p, 1);
+              diag_msg = "ivar_name";
+            } else if ($eqeqeq(352, $ret_or_1)) {
               
-              return (token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead));
-            } else {
-              return $ret_or_16
-            }; return nil; })())) {
+              tm = $rb_minus(p, 2);
+              diag_msg = "cvar_name";
+            } else if ($eqeqeq(360, $ret_or_1)) {
+              
+              self.escape = nil;
+            } else if ($eqeqeq(392, $ret_or_1)) {
+              
+              tm = p;
+            } else if ($eqeqeq(308, $ret_or_1)) {
+              
+              ident_tok = self.$tok();
+              ident_ts = self.ts;
+              ident_te = self.te;
+            } else if ($eqeqeq(479, $ret_or_1)) {
+              
+              self.num_base = 16;
+              self.num_digits_s = p;
+            } else if ($eqeqeq(473, $ret_or_1)) {
+              
+              self.num_base = 10;
+              self.num_digits_s = p;
+            } else if ($eqeqeq(476, $ret_or_1)) {
+              
+              self.num_base = 8;
+              self.num_digits_s = p;
+            } else if ($eqeqeq(470, $ret_or_1)) {
+              
+              self.num_base = 2;
+              self.num_digits_s = p;
+            } else if ($eqeqeq(485, $ret_or_1)) {
+              
+              self.num_base = 10;
+              self.num_digits_s = self.ts;
+            } else if ($eqeqeq(447, $ret_or_1)) {
+              
+              self.num_base = 8;
+              self.num_digits_s = self.ts;
+            } else if ($eqeqeq(462, $ret_or_1)) {
+              
+              self.num_suffix_s = p;
+            } else if ($eqeqeq(455, $ret_or_1)) {
+              
+              self.num_suffix_s = p;
+            } else if ($eqeqeq(452, $ret_or_1)) {
+              
+              self.num_suffix_s = p;
+            } else if ($eqeqeq(89, $ret_or_1)) {
+              
+              tm = p;
+            } else if ($eqeqeq(7, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+            } else if ($eqeqeq(113, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
               
-              if (token['$[]'](0)['$==']("tLABEL_END")) {
+              current_literal = self.$literal();
+              current_literal.$flush_string();
+              current_literal.$extend_content();
+              self.$emit("tSTRING_DBEG", "\#{".$freeze());
+              if ($truthy(current_literal['$heredoc?']())) {
                 
-                p = $rb_plus(p, 1);
-                self.$pop_literal();
-                self.cs = 795;
-              } else {
-                self.cs = self.$pop_literal()
+                
+                $writer = [self.herebody_s];
+                $send(current_literal, 'saved_herebody_s=', $to_a($writer));
+                $writer[$rb_minus($writer["length"], 1)];;
+                self.herebody_s = nil;
               };
+              current_literal.$start_interp_brace();
+              self.command_start = true;
+              self.cs = 802;
               
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;
-            } else {
-              current_literal.$extend_string(string, self.ts, self.te)
-            };;}
-            else if ((145)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            current_literal.$flush_string();
-            current_literal.$extend_content();
-            self.$emit("tSTRING_DBEG", "\#{".$freeze());
-            if ($truthy(current_literal['$heredoc?']())) {
+              continue;;;;
+            } else if ($eqeqeq(5, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              current_literal = self.$literal();
+              current_literal.$flush_string();
+              current_literal.$extend_content();
+              self.$emit("tSTRING_DVAR", nil, self.ts, $rb_plus(self.ts, 1));
+              p = self.ts;
               
               
-              $writer = [self.herebody_s];
-              $send(current_literal, 'saved_herebody_s=', Opal.to_a($writer));
+              $writer = [self.top, self.cs];
+              $send(self.stack, '[]=', $to_a($writer));
               $writer[$rb_minus($writer["length"], 1)];;
-              self.herebody_s = nil;};
-            current_literal.$start_interp_brace();
-            self.command_start = true;
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((10)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            current_literal.$flush_string();
-            current_literal.$extend_content();
-            self.$emit("tSTRING_DVAR", nil, self.ts, $rb_plus(self.ts, 1));
-            p = self.ts;
-            
-            
-            $writer = [self.top, self.cs];
-            $send(self.stack, '[]=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];;
-            self.top = $rb_plus(self.top, 1);
-            self.cs = 347;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((142)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            if (self.te['$=='](pe)) {
-              self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))};
-            if ($truthy(current_literal['$heredoc?']())) {
-              
-              line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
-              if ($truthy(self['$version?'](18, 19, 20))) {
-                line = line.$gsub(/\r.*$/, "".$freeze())};
-              if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
-                
-                self.herebody_s = self.te;
-                p = $rb_minus(current_literal.$heredoc_e(), 1);
-                self.cs = self.$pop_literal();
+              self.top = $rb_plus(self.top, 1);
+              self.cs = 347;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(109, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              current_literal = self.$literal();
+              if ($eqeq(self.te, pe)) {
+                self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))
+              };
+              if ($truthy(current_literal['$heredoc?']())) {
                 
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;
+                line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  line = line.$gsub(/\r.*$/, "".$freeze())
+                };
+                if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+                  
+                  self.herebody_s = self.te;
+                  p = $rb_minus(current_literal.$heredoc_e(), 1);
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  current_literal.$infer_indent_level(line);
+                  self.herebody_s = self.te;
+                };
               } else {
                 
-                current_literal.$infer_indent_level(line);
-                self.herebody_s = self.te;
+                if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+                  
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+                if ($truthy(self.herebody_s)) {
+                  
+                  p = $rb_minus(self.herebody_s, 1);
+                  self.herebody_s = nil;
+                };
               };
-            } else {
+              if (($truthy(current_literal['$words?']()) && ($not(self['$eof_codepoint?'](self.source_pts['$[]'](p)))))) {
+                current_literal.$extend_space(self.ts, self.te)
+              } else {
+                
+                current_literal.$extend_string(self.$tok(), self.ts, self.te);
+                current_literal.$flush_string();
+              };;
+            } else if ($eqeqeq(108, $ret_or_1)) {
               
-              if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+              self.te = $rb_plus(p, 1);
+              
+              string = self.$tok();
+              if (($truthy($rb_ge(self.version, 22)) && ($not(self.cond['$active?']())))) {
+                lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))
+              };
+              current_literal = self.$literal();
+              if (($not(current_literal['$heredoc?']()) && ($truthy((token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead)))))) {
                 
-                self.cs = self.$pop_literal();
+                if ($eqeq(token['$[]'](0), "tLABEL_END")) {
+                  
+                  p = $rb_plus(p, 1);
+                  self.$pop_literal();
+                  self.cs = 795;
+                } else {
+                  self.cs = self.$pop_literal()
+                };
                 
                 p = $rb_plus(p, 1);
                 _goto_level = _out;
-                continue;;;};
-              if ($truthy(self.herebody_s)) {
+                continue;;;
+              } else {
+                current_literal.$extend_string(string, self.ts, self.te)
+              };;
+            } else if ($eqeqeq(115, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              if ($truthy($rb_ge(self.version, 27))) {
+                self.$literal().$extend_string(self.$tok(), self.ts, self.te)
+              } else {
                 
-                p = $rb_minus(self.herebody_s, 1);
-                self.herebody_s = nil;};
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_17 = current_literal['$words?']()))) {
-              return self['$eof_codepoint?'](self.source_pts['$[]'](p))['$!']()
-            } else {
-              return $ret_or_17
-            }; return nil; })())) {
-              current_literal.$extend_space(self.ts, self.te)
-            } else {
+                message = ($truthy(self.$tok()['$start_with?']("\#@@")) ? ("cvar_name") : ("ivar_name"));
+                self.$diagnostic("error", message, $hash2(["name"], {"name": self.$tok($rb_plus(self.ts, 1), self.te)}), self.$range($rb_plus(self.ts, 1), self.te));
+              };;
+            } else if ($eqeqeq(114, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              current_literal.$extend_string(self.$tok(), self.ts, self.te);
+              current_literal = self.$literal();
               current_literal.$flush_string();
-            };;}
-            else if ((141)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            string = self.$tok();
-            if ($truthy((function() {if ($truthy(($ret_or_18 = $rb_ge(self.version, 22)))) {
-              return self.cond['$active?']()['$!']()
-            } else {
-              return $ret_or_18
-            }; return nil; })())) {
-              lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))};
-            current_literal = self.$literal();
-            if ($truthy((function() {if ($truthy(($ret_or_19 = current_literal['$heredoc?']()['$!']()))) {
+              current_literal.$extend_content();
+              self.$emit("tSTRING_DVAR", nil, self.ts, $rb_plus(self.ts, 1));
+              p = self.ts;
               
-              return (token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead));
-            } else {
-              return $ret_or_19
-            }; return nil; })())) {
               
-              if (token['$[]'](0)['$==']("tLABEL_END")) {
-                
-                p = $rb_plus(p, 1);
-                self.$pop_literal();
-                self.cs = 795;
-              } else {
-                self.cs = self.$pop_literal()
-              };
+              $writer = [self.top, self.cs];
+              $send(self.stack, '[]=', $to_a($writer));
+              $writer[$rb_minus($writer["length"], 1)];;
+              self.top = $rb_plus(self.top, 1);
+              self.cs = 347;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(111, $ret_or_1)) {
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
-              current_literal.$extend_string(string, self.ts, self.te)
-            };;}
-            else if ((147)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            if ($truthy($rb_ge(self.version, 27))) {
-              self.$literal().$extend_string(self.$tok(), self.ts, self.te)
-            } else {
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              message = (function() {if ($truthy(self.$tok()['$start_with?']("\#@@"))) {
-                return "cvar_name"
-              } else {
-                return "ivar_name"
-              }; return nil; })();
-              self.$diagnostic("error", message, $hash2(["name"], {"name": self.$tok($rb_plus(self.ts, 1), self.te)}), self.$range($rb_plus(self.ts, 1), self.te));
-            };;}
-            else if ((146)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            current_literal.$flush_string();
-            current_literal.$extend_content();
-            self.$emit("tSTRING_DVAR", nil, self.ts, $rb_plus(self.ts, 1));
-            p = self.ts;
-            
-            
-            $writer = [self.top, self.cs];
-            $send(self.stack, '[]=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];;
-            self.top = $rb_plus(self.top, 1);
-            self.cs = 347;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((144)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            string = self.$tok();
-            if ($truthy((function() {if ($truthy(($ret_or_20 = $rb_ge(self.version, 22)))) {
-              return self.cond['$active?']()['$!']()
-            } else {
-              return $ret_or_20
-            }; return nil; })())) {
-              lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))};
-            current_literal = self.$literal();
-            if ($truthy((function() {if ($truthy(($ret_or_21 = current_literal['$heredoc?']()['$!']()))) {
+              self.$literal().$extend_space(self.ts, self.te);;
+            } else if ($eqeqeq(112, $ret_or_1)) {
               
-              return (token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead));
-            } else {
-              return $ret_or_21
-            }; return nil; })())) {
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              if (token['$[]'](0)['$==']("tLABEL_END")) {
+              string = self.$tok();
+              if (($truthy($rb_ge(self.version, 22)) && ($not(self.cond['$active?']())))) {
+                lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))
+              };
+              current_literal = self.$literal();
+              if (($not(current_literal['$heredoc?']()) && ($truthy((token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead)))))) {
+                
+                if ($eqeq(token['$[]'](0), "tLABEL_END")) {
+                  
+                  p = $rb_plus(p, 1);
+                  self.$pop_literal();
+                  self.cs = 795;
+                } else {
+                  self.cs = self.$pop_literal()
+                };
                 
                 p = $rb_plus(p, 1);
-                self.$pop_literal();
-                self.cs = 795;
+                _goto_level = _out;
+                continue;;;
               } else {
-                self.cs = self.$pop_literal()
-              };
+                current_literal.$extend_string(string, self.ts, self.te)
+              };;
+            } else if ($eqeqeq(6, $ret_or_1)) {
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
-              current_literal.$extend_string(string, self.ts, self.te)
-            };;}
-            else if ((11)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_22 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_22
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
-              } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_23 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_23
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_24 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_24
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_25 = (function() {if ($truthy(($ret_or_26 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_26
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_25
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_27 = self.escape))) {
-                return $ret_or_27
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;}
-            else if ((9)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            string = self.$tok();
-            if ($truthy((function() {if ($truthy(($ret_or_28 = $rb_ge(self.version, 22)))) {
-              return self.cond['$active?']()['$!']()
-            } else {
-              return $ret_or_28
-            }; return nil; })())) {
-              lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))};
-            current_literal = self.$literal();
-            if ($truthy((function() {if ($truthy(($ret_or_29 = current_literal['$heredoc?']()['$!']()))) {
               
-              return (token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead));
-            } else {
-              return $ret_or_29
-            }; return nil; })())) {
+              p = $rb_minus(self.te, 1);;
               
-              if (token['$[]'](0)['$==']("tLABEL_END")) {
-                
-                p = $rb_plus(p, 1);
-                self.$pop_literal();
-                self.cs = 795;
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                self.cs = self.$pop_literal()
-              };
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;
+            } else if ($eqeqeq(4, $ret_or_1)) {
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
-              current_literal.$extend_string(string, self.ts, self.te)
-            };;}
-            else if ((173)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            if (self.te['$=='](pe)) {
-              self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))};
-            if ($truthy(current_literal['$heredoc?']())) {
               
-              line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
-              if ($truthy(self['$version?'](18, 19, 20))) {
-                line = line.$gsub(/\r.*$/, "".$freeze())};
-              if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+              p = $rb_minus(self.te, 1);;
+              
+              string = self.$tok();
+              if (($truthy($rb_ge(self.version, 22)) && ($not(self.cond['$active?']())))) {
+                lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))
+              };
+              current_literal = self.$literal();
+              if (($not(current_literal['$heredoc?']()) && ($truthy((token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead)))))) {
                 
-                self.herebody_s = self.te;
-                p = $rb_minus(current_literal.$heredoc_e(), 1);
-                self.cs = self.$pop_literal();
+                if ($eqeq(token['$[]'](0), "tLABEL_END")) {
+                  
+                  p = $rb_plus(p, 1);
+                  self.$pop_literal();
+                  self.cs = 795;
+                } else {
+                  self.cs = self.$pop_literal()
+                };
                 
                 p = $rb_plus(p, 1);
                 _goto_level = _out;
                 continue;;;
               } else {
-                
-                current_literal.$infer_indent_level(line);
-                self.herebody_s = self.te;
-              };
-            } else {
+                current_literal.$extend_string(string, self.ts, self.te)
+              };;
+            } else if ($eqeqeq(145, $ret_or_1)) {
               
-              if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
-                
-                self.cs = self.$pop_literal();
-                
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;};
-              if ($truthy(self.herebody_s)) {
-                
-                p = $rb_minus(self.herebody_s, 1);
-                self.herebody_s = nil;};
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_30 = current_literal['$words?']()))) {
-              return self['$eof_codepoint?'](self.source_pts['$[]'](p))['$!']()
-            } else {
-              return $ret_or_30
-            }; return nil; })())) {
-              current_literal.$extend_space(self.ts, self.te)
-            } else {
+              self.te = $rb_plus(p, 1);
               
-              current_literal.$extend_string(self.$tok(), self.ts, self.te);
+              current_literal = self.$literal();
               current_literal.$flush_string();
-            };;}
-            else if ((172)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            string = self.$tok();
-            if ($truthy((function() {if ($truthy(($ret_or_31 = $rb_ge(self.version, 22)))) {
-              return self.cond['$active?']()['$!']()
-            } else {
-              return $ret_or_31
-            }; return nil; })())) {
-              lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))};
-            current_literal = self.$literal();
-            if ($truthy((function() {if ($truthy(($ret_or_32 = current_literal['$heredoc?']()['$!']()))) {
-              
-              return (token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead));
-            } else {
-              return $ret_or_32
-            }; return nil; })())) {
-              
-              if (token['$[]'](0)['$==']("tLABEL_END")) {
+              current_literal.$extend_content();
+              self.$emit("tSTRING_DBEG", "\#{".$freeze());
+              if ($truthy(current_literal['$heredoc?']())) {
                 
-                p = $rb_plus(p, 1);
-                self.$pop_literal();
-                self.cs = 795;
-              } else {
-                self.cs = self.$pop_literal()
+                
+                $writer = [self.herebody_s];
+                $send(current_literal, 'saved_herebody_s=', $to_a($writer));
+                $writer[$rb_minus($writer["length"], 1)];;
+                self.herebody_s = nil;
               };
+              current_literal.$start_interp_brace();
+              self.command_start = true;
+              self.cs = 802;
               
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;
-            } else {
-              current_literal.$extend_string(string, self.ts, self.te)
-            };;}
-            else if ((175)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$literal().$extend_space(self.ts, self.te);;}
-            else if ((176)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            string = self.$tok();
-            if ($truthy((function() {if ($truthy(($ret_or_33 = $rb_ge(self.version, 22)))) {
-              return self.cond['$active?']()['$!']()
-            } else {
-              return $ret_or_33
-            }; return nil; })())) {
-              lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))};
-            current_literal = self.$literal();
-            if ($truthy((function() {if ($truthy(($ret_or_34 = current_literal['$heredoc?']()['$!']()))) {
+              continue;;;;
+            } else if ($eqeqeq(10, $ret_or_1)) {
               
-              return (token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead));
-            } else {
-              return $ret_or_34
-            }; return nil; })())) {
+              self.te = $rb_plus(p, 1);
+              
+              current_literal = self.$literal();
+              current_literal.$flush_string();
+              current_literal.$extend_content();
+              self.$emit("tSTRING_DVAR", nil, self.ts, $rb_plus(self.ts, 1));
+              p = self.ts;
+              
+              
+              $writer = [self.top, self.cs];
+              $send(self.stack, '[]=', $to_a($writer));
+              $writer[$rb_minus($writer["length"], 1)];;
+              self.top = $rb_plus(self.top, 1);
+              self.cs = 347;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(142, $ret_or_1)) {
               
-              if (token['$[]'](0)['$==']("tLABEL_END")) {
+              self.te = $rb_plus(p, 1);
+              
+              current_literal = self.$literal();
+              if ($eqeq(self.te, pe)) {
+                self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))
+              };
+              if ($truthy(current_literal['$heredoc?']())) {
                 
-                p = $rb_plus(p, 1);
-                self.$pop_literal();
-                self.cs = 795;
+                line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  line = line.$gsub(/\r.*$/, "".$freeze())
+                };
+                if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+                  
+                  self.herebody_s = self.te;
+                  p = $rb_minus(current_literal.$heredoc_e(), 1);
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  current_literal.$infer_indent_level(line);
+                  self.herebody_s = self.te;
+                };
               } else {
-                self.cs = self.$pop_literal()
+                
+                if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+                  
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+                if ($truthy(self.herebody_s)) {
+                  
+                  p = $rb_minus(self.herebody_s, 1);
+                  self.herebody_s = nil;
+                };
               };
+              if (($truthy(current_literal['$words?']()) && ($not(self['$eof_codepoint?'](self.source_pts['$[]'](p)))))) {
+                current_literal.$extend_space(self.ts, self.te)
+              } else {
+                
+                current_literal.$extend_string(self.$tok(), self.ts, self.te);
+                current_literal.$flush_string();
+              };;
+            } else if ($eqeqeq(141, $ret_or_1)) {
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
-              current_literal.$extend_string(string, self.ts, self.te)
-            };;}
-            else if ((179)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            if (self.te['$=='](pe)) {
-              self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))};
-            if ($truthy(current_literal['$heredoc?']())) {
+              self.te = $rb_plus(p, 1);
               
-              line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
-              if ($truthy(self['$version?'](18, 19, 20))) {
-                line = line.$gsub(/\r.*$/, "".$freeze())};
-              if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+              string = self.$tok();
+              if (($truthy($rb_ge(self.version, 22)) && ($not(self.cond['$active?']())))) {
+                lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))
+              };
+              current_literal = self.$literal();
+              if (($not(current_literal['$heredoc?']()) && ($truthy((token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead)))))) {
                 
-                self.herebody_s = self.te;
-                p = $rb_minus(current_literal.$heredoc_e(), 1);
-                self.cs = self.$pop_literal();
+                if ($eqeq(token['$[]'](0), "tLABEL_END")) {
+                  
+                  p = $rb_plus(p, 1);
+                  self.$pop_literal();
+                  self.cs = 795;
+                } else {
+                  self.cs = self.$pop_literal()
+                };
                 
                 p = $rb_plus(p, 1);
                 _goto_level = _out;
                 continue;;;
               } else {
-                
-                current_literal.$infer_indent_level(line);
-                self.herebody_s = self.te;
-              };
-            } else {
+                current_literal.$extend_string(string, self.ts, self.te)
+              };;
+            } else if ($eqeqeq(147, $ret_or_1)) {
               
-              if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
-                
-                self.cs = self.$pop_literal();
-                
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;};
-              if ($truthy(self.herebody_s)) {
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              if ($truthy($rb_ge(self.version, 27))) {
+                self.$literal().$extend_string(self.$tok(), self.ts, self.te)
+              } else {
                 
-                p = $rb_minus(self.herebody_s, 1);
-                self.herebody_s = nil;};
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_35 = current_literal['$words?']()))) {
-              return self['$eof_codepoint?'](self.source_pts['$[]'](p))['$!']()
-            } else {
-              return $ret_or_35
-            }; return nil; })())) {
-              current_literal.$extend_space(self.ts, self.te)
-            } else {
+                message = ($truthy(self.$tok()['$start_with?']("\#@@")) ? ("cvar_name") : ("ivar_name"));
+                self.$diagnostic("error", message, $hash2(["name"], {"name": self.$tok($rb_plus(self.ts, 1), self.te)}), self.$range($rb_plus(self.ts, 1), self.te));
+              };;
+            } else if ($eqeqeq(146, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              current_literal.$extend_string(self.$tok(), self.ts, self.te);
+              current_literal = self.$literal();
               current_literal.$flush_string();
-            };;}
-            else if ((178)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            string = self.$tok();
-            if ($truthy((function() {if ($truthy(($ret_or_36 = $rb_ge(self.version, 22)))) {
-              return self.cond['$active?']()['$!']()
-            } else {
-              return $ret_or_36
-            }; return nil; })())) {
-              lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))};
-            current_literal = self.$literal();
-            if ($truthy((function() {if ($truthy(($ret_or_37 = current_literal['$heredoc?']()['$!']()))) {
+              current_literal.$extend_content();
+              self.$emit("tSTRING_DVAR", nil, self.ts, $rb_plus(self.ts, 1));
+              p = self.ts;
               
-              return (token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead));
-            } else {
-              return $ret_or_37
-            }; return nil; })())) {
               
-              if (token['$[]'](0)['$==']("tLABEL_END")) {
+              $writer = [self.top, self.cs];
+              $send(self.stack, '[]=', $to_a($writer));
+              $writer[$rb_minus($writer["length"], 1)];;
+              self.top = $rb_plus(self.top, 1);
+              self.cs = 347;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(144, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              string = self.$tok();
+              if (($truthy($rb_ge(self.version, 22)) && ($not(self.cond['$active?']())))) {
+                lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))
+              };
+              current_literal = self.$literal();
+              if (($not(current_literal['$heredoc?']()) && ($truthy((token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead)))))) {
+                
+                if ($eqeq(token['$[]'](0), "tLABEL_END")) {
+                  
+                  p = $rb_plus(p, 1);
+                  self.$pop_literal();
+                  self.cs = 795;
+                } else {
+                  self.cs = self.$pop_literal()
+                };
                 
                 p = $rb_plus(p, 1);
-                self.$pop_literal();
-                self.cs = 795;
+                _goto_level = _out;
+                continue;;;
               } else {
-                self.cs = self.$pop_literal()
-              };
+                current_literal.$extend_string(string, self.ts, self.te)
+              };;
+            } else if ($eqeqeq(11, $ret_or_1)) {
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
-              current_literal.$extend_string(string, self.ts, self.te)
-            };;}
-            else if ((181)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            string = self.$tok();
-            if ($truthy((function() {if ($truthy(($ret_or_38 = $rb_ge(self.version, 22)))) {
-              return self.cond['$active?']()['$!']()
-            } else {
-              return $ret_or_38
-            }; return nil; })())) {
-              lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))};
-            current_literal = self.$literal();
-            if ($truthy((function() {if ($truthy(($ret_or_39 = current_literal['$heredoc?']()['$!']()))) {
               
-              return (token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead));
-            } else {
-              return $ret_or_39
-            }; return nil; })())) {
+              p = $rb_minus(self.te, 1);;
               
-              if (token['$[]'](0)['$==']("tLABEL_END")) {
-                
-                p = $rb_plus(p, 1);
-                self.$pop_literal();
-                self.cs = 795;
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                self.cs = self.$pop_literal()
-              };
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;
+            } else if ($eqeqeq(9, $ret_or_1)) {
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
-              current_literal.$extend_string(string, self.ts, self.te)
-            };;}
-            else if ((188)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            current_literal.$flush_string();
-            current_literal.$extend_content();
-            self.$emit("tSTRING_DBEG", "\#{".$freeze());
-            if ($truthy(current_literal['$heredoc?']())) {
               
+              p = $rb_minus(self.te, 1);;
               
-              $writer = [self.herebody_s];
-              $send(current_literal, 'saved_herebody_s=', Opal.to_a($writer));
-              $writer[$rb_minus($writer["length"], 1)];;
-              self.herebody_s = nil;};
-            current_literal.$start_interp_brace();
-            self.command_start = true;
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((13)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            current_literal.$flush_string();
-            current_literal.$extend_content();
-            self.$emit("tSTRING_DVAR", nil, self.ts, $rb_plus(self.ts, 1));
-            p = self.ts;
-            
-            
-            $writer = [self.top, self.cs];
-            $send(self.stack, '[]=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];;
-            self.top = $rb_plus(self.top, 1);
-            self.cs = 347;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((185)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            if (self.te['$=='](pe)) {
-              self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))};
-            if ($truthy(current_literal['$heredoc?']())) {
-              
-              line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
-              if ($truthy(self['$version?'](18, 19, 20))) {
-                line = line.$gsub(/\r.*$/, "".$freeze())};
-              if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+              string = self.$tok();
+              if (($truthy($rb_ge(self.version, 22)) && ($not(self.cond['$active?']())))) {
+                lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))
+              };
+              current_literal = self.$literal();
+              if (($not(current_literal['$heredoc?']()) && ($truthy((token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead)))))) {
                 
-                self.herebody_s = self.te;
-                p = $rb_minus(current_literal.$heredoc_e(), 1);
-                self.cs = self.$pop_literal();
+                if ($eqeq(token['$[]'](0), "tLABEL_END")) {
+                  
+                  p = $rb_plus(p, 1);
+                  self.$pop_literal();
+                  self.cs = 795;
+                } else {
+                  self.cs = self.$pop_literal()
+                };
                 
                 p = $rb_plus(p, 1);
                 _goto_level = _out;
                 continue;;;
               } else {
-                
-                current_literal.$infer_indent_level(line);
-                self.herebody_s = self.te;
-              };
-            } else {
+                current_literal.$extend_string(string, self.ts, self.te)
+              };;
+            } else if ($eqeqeq(173, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
               
-              if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+              current_literal = self.$literal();
+              if ($eqeq(self.te, pe)) {
+                self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))
+              };
+              if ($truthy(current_literal['$heredoc?']())) {
                 
-                self.cs = self.$pop_literal();
+                line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  line = line.$gsub(/\r.*$/, "".$freeze())
+                };
+                if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+                  
+                  self.herebody_s = self.te;
+                  p = $rb_minus(current_literal.$heredoc_e(), 1);
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  current_literal.$infer_indent_level(line);
+                  self.herebody_s = self.te;
+                };
+              } else {
                 
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;};
-              if ($truthy(self.herebody_s)) {
+                if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+                  
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+                if ($truthy(self.herebody_s)) {
+                  
+                  p = $rb_minus(self.herebody_s, 1);
+                  self.herebody_s = nil;
+                };
+              };
+              if (($truthy(current_literal['$words?']()) && ($not(self['$eof_codepoint?'](self.source_pts['$[]'](p)))))) {
+                current_literal.$extend_space(self.ts, self.te)
+              } else {
                 
-                p = $rb_minus(self.herebody_s, 1);
-                self.herebody_s = nil;};
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_40 = current_literal['$words?']()))) {
-              return self['$eof_codepoint?'](self.source_pts['$[]'](p))['$!']()
-            } else {
-              return $ret_or_40
-            }; return nil; })())) {
-              current_literal.$extend_space(self.ts, self.te)
-            } else {
-              
-              current_literal.$extend_string(self.$tok(), self.ts, self.te);
-              current_literal.$flush_string();
-            };;}
-            else if ((184)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            string = self.$tok();
-            if ($truthy((function() {if ($truthy(($ret_or_41 = $rb_ge(self.version, 22)))) {
-              return self.cond['$active?']()['$!']()
-            } else {
-              return $ret_or_41
-            }; return nil; })())) {
-              lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))};
-            current_literal = self.$literal();
-            if ($truthy((function() {if ($truthy(($ret_or_42 = current_literal['$heredoc?']()['$!']()))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te);
+                current_literal.$flush_string();
+              };;
+            } else if ($eqeqeq(172, $ret_or_1)) {
               
-              return (token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead));
-            } else {
-              return $ret_or_42
-            }; return nil; })())) {
+              self.te = $rb_plus(p, 1);
               
-              if (token['$[]'](0)['$==']("tLABEL_END")) {
+              string = self.$tok();
+              if (($truthy($rb_ge(self.version, 22)) && ($not(self.cond['$active?']())))) {
+                lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))
+              };
+              current_literal = self.$literal();
+              if (($not(current_literal['$heredoc?']()) && ($truthy((token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead)))))) {
+                
+                if ($eqeq(token['$[]'](0), "tLABEL_END")) {
+                  
+                  p = $rb_plus(p, 1);
+                  self.$pop_literal();
+                  self.cs = 795;
+                } else {
+                  self.cs = self.$pop_literal()
+                };
                 
                 p = $rb_plus(p, 1);
-                self.$pop_literal();
-                self.cs = 795;
+                _goto_level = _out;
+                continue;;;
               } else {
-                self.cs = self.$pop_literal()
-              };
+                current_literal.$extend_string(string, self.ts, self.te)
+              };;
+            } else if ($eqeqeq(175, $ret_or_1)) {
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
-              current_literal.$extend_string(string, self.ts, self.te)
-            };;}
-            else if ((190)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            if ($truthy($rb_ge(self.version, 27))) {
-              self.$literal().$extend_string(self.$tok(), self.ts, self.te)
-            } else {
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              message = (function() {if ($truthy(self.$tok()['$start_with?']("\#@@"))) {
-                return "cvar_name"
-              } else {
-                return "ivar_name"
-              }; return nil; })();
-              self.$diagnostic("error", message, $hash2(["name"], {"name": self.$tok($rb_plus(self.ts, 1), self.te)}), self.$range($rb_plus(self.ts, 1), self.te));
-            };;}
-            else if ((189)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            current_literal.$flush_string();
-            current_literal.$extend_content();
-            self.$emit("tSTRING_DVAR", nil, self.ts, $rb_plus(self.ts, 1));
-            p = self.ts;
-            
-            
-            $writer = [self.top, self.cs];
-            $send(self.stack, '[]=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];;
-            self.top = $rb_plus(self.top, 1);
-            self.cs = 347;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((187)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            string = self.$tok();
-            if ($truthy((function() {if ($truthy(($ret_or_43 = $rb_ge(self.version, 22)))) {
-              return self.cond['$active?']()['$!']()
-            } else {
-              return $ret_or_43
-            }; return nil; })())) {
-              lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))};
-            current_literal = self.$literal();
-            if ($truthy((function() {if ($truthy(($ret_or_44 = current_literal['$heredoc?']()['$!']()))) {
+              self.$literal().$extend_space(self.ts, self.te);;
+            } else if ($eqeqeq(176, $ret_or_1)) {
               
-              return (token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead));
-            } else {
-              return $ret_or_44
-            }; return nil; })())) {
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              if (token['$[]'](0)['$==']("tLABEL_END")) {
+              string = self.$tok();
+              if (($truthy($rb_ge(self.version, 22)) && ($not(self.cond['$active?']())))) {
+                lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))
+              };
+              current_literal = self.$literal();
+              if (($not(current_literal['$heredoc?']()) && ($truthy((token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead)))))) {
+                
+                if ($eqeq(token['$[]'](0), "tLABEL_END")) {
+                  
+                  p = $rb_plus(p, 1);
+                  self.$pop_literal();
+                  self.cs = 795;
+                } else {
+                  self.cs = self.$pop_literal()
+                };
                 
                 p = $rb_plus(p, 1);
-                self.$pop_literal();
-                self.cs = 795;
+                _goto_level = _out;
+                continue;;;
               } else {
-                self.cs = self.$pop_literal()
-              };
-              
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
-              current_literal.$extend_string(string, self.ts, self.te)
-            };;}
-            else if ((12)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            string = self.$tok();
-            if ($truthy((function() {if ($truthy(($ret_or_45 = $rb_ge(self.version, 22)))) {
-              return self.cond['$active?']()['$!']()
-            } else {
-              return $ret_or_45
-            }; return nil; })())) {
-              lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))};
-            current_literal = self.$literal();
-            if ($truthy((function() {if ($truthy(($ret_or_46 = current_literal['$heredoc?']()['$!']()))) {
+                current_literal.$extend_string(string, self.ts, self.te)
+              };;
+            } else if ($eqeqeq(179, $ret_or_1)) {
               
-              return (token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead));
-            } else {
-              return $ret_or_46
-            }; return nil; })())) {
+              self.te = $rb_plus(p, 1);
               
-              if (token['$[]'](0)['$==']("tLABEL_END")) {
+              current_literal = self.$literal();
+              if ($eqeq(self.te, pe)) {
+                self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))
+              };
+              if ($truthy(current_literal['$heredoc?']())) {
                 
-                p = $rb_plus(p, 1);
-                self.$pop_literal();
-                self.cs = 795;
+                line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  line = line.$gsub(/\r.*$/, "".$freeze())
+                };
+                if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+                  
+                  self.herebody_s = self.te;
+                  p = $rb_minus(current_literal.$heredoc_e(), 1);
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  current_literal.$infer_indent_level(line);
+                  self.herebody_s = self.te;
+                };
               } else {
-                self.cs = self.$pop_literal()
+                
+                if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+                  
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+                if ($truthy(self.herebody_s)) {
+                  
+                  p = $rb_minus(self.herebody_s, 1);
+                  self.herebody_s = nil;
+                };
               };
+              if (($truthy(current_literal['$words?']()) && ($not(self['$eof_codepoint?'](self.source_pts['$[]'](p)))))) {
+                current_literal.$extend_space(self.ts, self.te)
+              } else {
+                
+                current_literal.$extend_string(self.$tok(), self.ts, self.te);
+                current_literal.$flush_string();
+              };;
+            } else if ($eqeqeq(178, $ret_or_1)) {
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
-              current_literal.$extend_string(string, self.ts, self.te)
-            };;}
-            else if ((192)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            if (self.te['$=='](pe)) {
-              self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))};
-            if ($truthy(current_literal['$heredoc?']())) {
+              self.te = $rb_plus(p, 1);
               
-              line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
-              if ($truthy(self['$version?'](18, 19, 20))) {
-                line = line.$gsub(/\r.*$/, "".$freeze())};
-              if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+              string = self.$tok();
+              if (($truthy($rb_ge(self.version, 22)) && ($not(self.cond['$active?']())))) {
+                lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))
+              };
+              current_literal = self.$literal();
+              if (($not(current_literal['$heredoc?']()) && ($truthy((token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead)))))) {
                 
-                self.herebody_s = self.te;
-                p = $rb_minus(current_literal.$heredoc_e(), 1);
-                self.cs = self.$pop_literal();
+                if ($eqeq(token['$[]'](0), "tLABEL_END")) {
+                  
+                  p = $rb_plus(p, 1);
+                  self.$pop_literal();
+                  self.cs = 795;
+                } else {
+                  self.cs = self.$pop_literal()
+                };
                 
                 p = $rb_plus(p, 1);
                 _goto_level = _out;
                 continue;;;
               } else {
-                
-                current_literal.$infer_indent_level(line);
-                self.herebody_s = self.te;
-              };
-            } else {
+                current_literal.$extend_string(string, self.ts, self.te)
+              };;
+            } else if ($eqeqeq(181, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+              string = self.$tok();
+              if (($truthy($rb_ge(self.version, 22)) && ($not(self.cond['$active?']())))) {
+                lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))
+              };
+              current_literal = self.$literal();
+              if (($not(current_literal['$heredoc?']()) && ($truthy((token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead)))))) {
                 
-                self.cs = self.$pop_literal();
+                if ($eqeq(token['$[]'](0), "tLABEL_END")) {
+                  
+                  p = $rb_plus(p, 1);
+                  self.$pop_literal();
+                  self.cs = 795;
+                } else {
+                  self.cs = self.$pop_literal()
+                };
                 
                 p = $rb_plus(p, 1);
                 _goto_level = _out;
-                continue;;;};
-              if ($truthy(self.herebody_s)) {
-                
-                p = $rb_minus(self.herebody_s, 1);
-                self.herebody_s = nil;};
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_47 = current_literal['$words?']()))) {
-              return self['$eof_codepoint?'](self.source_pts['$[]'](p))['$!']()
-            } else {
-              return $ret_or_47
-            }; return nil; })())) {
-              current_literal.$extend_space(self.ts, self.te)
-            } else {
-              
-              current_literal.$extend_string(self.$tok(), self.ts, self.te);
-              current_literal.$flush_string();
-            };;}
-            else if ((191)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            string = self.$tok();
-            if ($truthy((function() {if ($truthy(($ret_or_48 = $rb_ge(self.version, 22)))) {
-              return self.cond['$active?']()['$!']()
-            } else {
-              return $ret_or_48
-            }; return nil; })())) {
-              lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))};
-            current_literal = self.$literal();
-            if ($truthy((function() {if ($truthy(($ret_or_49 = current_literal['$heredoc?']()['$!']()))) {
+                continue;;;
+              } else {
+                current_literal.$extend_string(string, self.ts, self.te)
+              };;
+            } else if ($eqeqeq(188, $ret_or_1)) {
               
-              return (token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead));
-            } else {
-              return $ret_or_49
-            }; return nil; })())) {
+              self.te = $rb_plus(p, 1);
               
-              if (token['$[]'](0)['$==']("tLABEL_END")) {
+              current_literal = self.$literal();
+              current_literal.$flush_string();
+              current_literal.$extend_content();
+              self.$emit("tSTRING_DBEG", "\#{".$freeze());
+              if ($truthy(current_literal['$heredoc?']())) {
                 
-                p = $rb_plus(p, 1);
-                self.$pop_literal();
-                self.cs = 795;
-              } else {
-                self.cs = self.$pop_literal()
+                
+                $writer = [self.herebody_s];
+                $send(current_literal, 'saved_herebody_s=', $to_a($writer));
+                $writer[$rb_minus($writer["length"], 1)];;
+                self.herebody_s = nil;
               };
+              current_literal.$start_interp_brace();
+              self.command_start = true;
+              self.cs = 802;
               
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;
-            } else {
-              current_literal.$extend_string(string, self.ts, self.te)
-            };;}
-            else if ((199)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            current_literal.$flush_string();
-            current_literal.$extend_content();
-            self.$emit("tSTRING_DBEG", "\#{".$freeze());
-            if ($truthy(current_literal['$heredoc?']())) {
+              continue;;;;
+            } else if ($eqeqeq(13, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              current_literal = self.$literal();
+              current_literal.$flush_string();
+              current_literal.$extend_content();
+              self.$emit("tSTRING_DVAR", nil, self.ts, $rb_plus(self.ts, 1));
+              p = self.ts;
               
               
-              $writer = [self.herebody_s];
-              $send(current_literal, 'saved_herebody_s=', Opal.to_a($writer));
+              $writer = [self.top, self.cs];
+              $send(self.stack, '[]=', $to_a($writer));
               $writer[$rb_minus($writer["length"], 1)];;
-              self.herebody_s = nil;};
-            current_literal.$start_interp_brace();
-            self.command_start = true;
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((15)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            current_literal.$flush_string();
-            current_literal.$extend_content();
-            self.$emit("tSTRING_DVAR", nil, self.ts, $rb_plus(self.ts, 1));
-            p = self.ts;
-            
-            
-            $writer = [self.top, self.cs];
-            $send(self.stack, '[]=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];;
-            self.top = $rb_plus(self.top, 1);
-            self.cs = 347;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((195)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            if (self.te['$=='](pe)) {
-              self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))};
-            if ($truthy(current_literal['$heredoc?']())) {
-              
-              line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
-              if ($truthy(self['$version?'](18, 19, 20))) {
-                line = line.$gsub(/\r.*$/, "".$freeze())};
-              if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
-                
-                self.herebody_s = self.te;
-                p = $rb_minus(current_literal.$heredoc_e(), 1);
-                self.cs = self.$pop_literal();
+              self.top = $rb_plus(self.top, 1);
+              self.cs = 347;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(185, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              current_literal = self.$literal();
+              if ($eqeq(self.te, pe)) {
+                self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))
+              };
+              if ($truthy(current_literal['$heredoc?']())) {
                 
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;
+                line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  line = line.$gsub(/\r.*$/, "".$freeze())
+                };
+                if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+                  
+                  self.herebody_s = self.te;
+                  p = $rb_minus(current_literal.$heredoc_e(), 1);
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  current_literal.$infer_indent_level(line);
+                  self.herebody_s = self.te;
+                };
               } else {
                 
-                current_literal.$infer_indent_level(line);
-                self.herebody_s = self.te;
+                if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+                  
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+                if ($truthy(self.herebody_s)) {
+                  
+                  p = $rb_minus(self.herebody_s, 1);
+                  self.herebody_s = nil;
+                };
               };
-            } else {
+              if (($truthy(current_literal['$words?']()) && ($not(self['$eof_codepoint?'](self.source_pts['$[]'](p)))))) {
+                current_literal.$extend_space(self.ts, self.te)
+              } else {
+                
+                current_literal.$extend_string(self.$tok(), self.ts, self.te);
+                current_literal.$flush_string();
+              };;
+            } else if ($eqeqeq(184, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
               
-              if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+              string = self.$tok();
+              if (($truthy($rb_ge(self.version, 22)) && ($not(self.cond['$active?']())))) {
+                lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))
+              };
+              current_literal = self.$literal();
+              if (($not(current_literal['$heredoc?']()) && ($truthy((token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead)))))) {
                 
-                self.cs = self.$pop_literal();
+                if ($eqeq(token['$[]'](0), "tLABEL_END")) {
+                  
+                  p = $rb_plus(p, 1);
+                  self.$pop_literal();
+                  self.cs = 795;
+                } else {
+                  self.cs = self.$pop_literal()
+                };
                 
                 p = $rb_plus(p, 1);
                 _goto_level = _out;
-                continue;;;};
-              if ($truthy(self.herebody_s)) {
+                continue;;;
+              } else {
+                current_literal.$extend_string(string, self.ts, self.te)
+              };;
+            } else if ($eqeqeq(190, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              if ($truthy($rb_ge(self.version, 27))) {
+                self.$literal().$extend_string(self.$tok(), self.ts, self.te)
+              } else {
                 
-                p = $rb_minus(self.herebody_s, 1);
-                self.herebody_s = nil;};
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_50 = current_literal['$words?']()))) {
-              return self['$eof_codepoint?'](self.source_pts['$[]'](p))['$!']()
-            } else {
-              return $ret_or_50
-            }; return nil; })())) {
-              current_literal.$extend_space(self.ts, self.te)
-            } else {
+                message = ($truthy(self.$tok()['$start_with?']("\#@@")) ? ("cvar_name") : ("ivar_name"));
+                self.$diagnostic("error", message, $hash2(["name"], {"name": self.$tok($rb_plus(self.ts, 1), self.te)}), self.$range($rb_plus(self.ts, 1), self.te));
+              };;
+            } else if ($eqeqeq(189, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              current_literal.$extend_string(self.$tok(), self.ts, self.te);
+              current_literal = self.$literal();
               current_literal.$flush_string();
-            };;}
-            else if ((194)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            string = self.$tok();
-            if ($truthy((function() {if ($truthy(($ret_or_51 = $rb_ge(self.version, 22)))) {
-              return self.cond['$active?']()['$!']()
-            } else {
-              return $ret_or_51
-            }; return nil; })())) {
-              lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))};
-            current_literal = self.$literal();
-            if ($truthy((function() {if ($truthy(($ret_or_52 = current_literal['$heredoc?']()['$!']()))) {
+              current_literal.$extend_content();
+              self.$emit("tSTRING_DVAR", nil, self.ts, $rb_plus(self.ts, 1));
+              p = self.ts;
               
-              return (token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead));
-            } else {
-              return $ret_or_52
-            }; return nil; })())) {
               
-              if (token['$[]'](0)['$==']("tLABEL_END")) {
+              $writer = [self.top, self.cs];
+              $send(self.stack, '[]=', $to_a($writer));
+              $writer[$rb_minus($writer["length"], 1)];;
+              self.top = $rb_plus(self.top, 1);
+              self.cs = 347;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(187, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              string = self.$tok();
+              if (($truthy($rb_ge(self.version, 22)) && ($not(self.cond['$active?']())))) {
+                lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))
+              };
+              current_literal = self.$literal();
+              if (($not(current_literal['$heredoc?']()) && ($truthy((token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead)))))) {
+                
+                if ($eqeq(token['$[]'](0), "tLABEL_END")) {
+                  
+                  p = $rb_plus(p, 1);
+                  self.$pop_literal();
+                  self.cs = 795;
+                } else {
+                  self.cs = self.$pop_literal()
+                };
                 
                 p = $rb_plus(p, 1);
-                self.$pop_literal();
-                self.cs = 795;
+                _goto_level = _out;
+                continue;;;
               } else {
-                self.cs = self.$pop_literal()
+                current_literal.$extend_string(string, self.ts, self.te)
+              };;
+            } else if ($eqeqeq(12, $ret_or_1)) {
+              
+              
+              p = $rb_minus(self.te, 1);;
+              
+              string = self.$tok();
+              if (($truthy($rb_ge(self.version, 22)) && ($not(self.cond['$active?']())))) {
+                lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))
               };
+              current_literal = self.$literal();
+              if (($not(current_literal['$heredoc?']()) && ($truthy((token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead)))))) {
+                
+                if ($eqeq(token['$[]'](0), "tLABEL_END")) {
+                  
+                  p = $rb_plus(p, 1);
+                  self.$pop_literal();
+                  self.cs = 795;
+                } else {
+                  self.cs = self.$pop_literal()
+                };
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else {
+                current_literal.$extend_string(string, self.ts, self.te)
+              };;
+            } else if ($eqeqeq(192, $ret_or_1)) {
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
-              current_literal.$extend_string(string, self.ts, self.te)
-            };;}
-            else if ((201)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            if ($truthy($rb_ge(self.version, 27))) {
-              self.$literal().$extend_string(self.$tok(), self.ts, self.te)
-            } else {
+              self.te = $rb_plus(p, 1);
               
-              message = (function() {if ($truthy(self.$tok()['$start_with?']("\#@@"))) {
-                return "cvar_name"
+              current_literal = self.$literal();
+              if ($eqeq(self.te, pe)) {
+                self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))
+              };
+              if ($truthy(current_literal['$heredoc?']())) {
+                
+                line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  line = line.$gsub(/\r.*$/, "".$freeze())
+                };
+                if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+                  
+                  self.herebody_s = self.te;
+                  p = $rb_minus(current_literal.$heredoc_e(), 1);
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  current_literal.$infer_indent_level(line);
+                  self.herebody_s = self.te;
+                };
               } else {
-                return "ivar_name"
-              }; return nil; })();
-              self.$diagnostic("error", message, $hash2(["name"], {"name": self.$tok($rb_plus(self.ts, 1), self.te)}), self.$range($rb_plus(self.ts, 1), self.te));
-            };;}
-            else if ((200)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            current_literal.$flush_string();
-            current_literal.$extend_content();
-            self.$emit("tSTRING_DVAR", nil, self.ts, $rb_plus(self.ts, 1));
-            p = self.ts;
-            
-            
-            $writer = [self.top, self.cs];
-            $send(self.stack, '[]=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];;
-            self.top = $rb_plus(self.top, 1);
-            self.cs = 347;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((197)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$literal().$extend_space(self.ts, self.te);;}
-            else if ((198)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            string = self.$tok();
-            if ($truthy((function() {if ($truthy(($ret_or_53 = $rb_ge(self.version, 22)))) {
-              return self.cond['$active?']()['$!']()
-            } else {
-              return $ret_or_53
-            }; return nil; })())) {
-              lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))};
-            current_literal = self.$literal();
-            if ($truthy((function() {if ($truthy(($ret_or_54 = current_literal['$heredoc?']()['$!']()))) {
+                
+                if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+                  
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+                if ($truthy(self.herebody_s)) {
+                  
+                  p = $rb_minus(self.herebody_s, 1);
+                  self.herebody_s = nil;
+                };
+              };
+              if (($truthy(current_literal['$words?']()) && ($not(self['$eof_codepoint?'](self.source_pts['$[]'](p)))))) {
+                current_literal.$extend_space(self.ts, self.te)
+              } else {
+                
+                current_literal.$extend_string(self.$tok(), self.ts, self.te);
+                current_literal.$flush_string();
+              };;
+            } else if ($eqeqeq(191, $ret_or_1)) {
               
-              return (token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead));
-            } else {
-              return $ret_or_54
-            }; return nil; })())) {
+              self.te = $rb_plus(p, 1);
               
-              if (token['$[]'](0)['$==']("tLABEL_END")) {
+              string = self.$tok();
+              if (($truthy($rb_ge(self.version, 22)) && ($not(self.cond['$active?']())))) {
+                lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))
+              };
+              current_literal = self.$literal();
+              if (($not(current_literal['$heredoc?']()) && ($truthy((token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead)))))) {
+                
+                if ($eqeq(token['$[]'](0), "tLABEL_END")) {
+                  
+                  p = $rb_plus(p, 1);
+                  self.$pop_literal();
+                  self.cs = 795;
+                } else {
+                  self.cs = self.$pop_literal()
+                };
                 
                 p = $rb_plus(p, 1);
-                self.$pop_literal();
-                self.cs = 795;
+                _goto_level = _out;
+                continue;;;
               } else {
-                self.cs = self.$pop_literal()
+                current_literal.$extend_string(string, self.ts, self.te)
+              };;
+            } else if ($eqeqeq(199, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              current_literal = self.$literal();
+              current_literal.$flush_string();
+              current_literal.$extend_content();
+              self.$emit("tSTRING_DBEG", "\#{".$freeze());
+              if ($truthy(current_literal['$heredoc?']())) {
+                
+                
+                $writer = [self.herebody_s];
+                $send(current_literal, 'saved_herebody_s=', $to_a($writer));
+                $writer[$rb_minus($writer["length"], 1)];;
+                self.herebody_s = nil;
               };
+              current_literal.$start_interp_brace();
+              self.command_start = true;
+              self.cs = 802;
               
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;
-            } else {
-              current_literal.$extend_string(string, self.ts, self.te)
-            };;}
-            else if ((14)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            string = self.$tok();
-            if ($truthy((function() {if ($truthy(($ret_or_55 = $rb_ge(self.version, 22)))) {
-              return self.cond['$active?']()['$!']()
-            } else {
-              return $ret_or_55
-            }; return nil; })())) {
-              lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))};
-            current_literal = self.$literal();
-            if ($truthy((function() {if ($truthy(($ret_or_56 = current_literal['$heredoc?']()['$!']()))) {
+              continue;;;;
+            } else if ($eqeqeq(15, $ret_or_1)) {
               
-              return (token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead));
-            } else {
-              return $ret_or_56
-            }; return nil; })())) {
+              self.te = $rb_plus(p, 1);
+              
+              current_literal = self.$literal();
+              current_literal.$flush_string();
+              current_literal.$extend_content();
+              self.$emit("tSTRING_DVAR", nil, self.ts, $rb_plus(self.ts, 1));
+              p = self.ts;
+              
+              
+              $writer = [self.top, self.cs];
+              $send(self.stack, '[]=', $to_a($writer));
+              $writer[$rb_minus($writer["length"], 1)];;
+              self.top = $rb_plus(self.top, 1);
+              self.cs = 347;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(195, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
               
-              if (token['$[]'](0)['$==']("tLABEL_END")) {
+              current_literal = self.$literal();
+              if ($eqeq(self.te, pe)) {
+                self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))
+              };
+              if ($truthy(current_literal['$heredoc?']())) {
                 
-                p = $rb_plus(p, 1);
-                self.$pop_literal();
-                self.cs = 795;
+                line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  line = line.$gsub(/\r.*$/, "".$freeze())
+                };
+                if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+                  
+                  self.herebody_s = self.te;
+                  p = $rb_minus(current_literal.$heredoc_e(), 1);
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  current_literal.$infer_indent_level(line);
+                  self.herebody_s = self.te;
+                };
               } else {
-                self.cs = self.$pop_literal()
+                
+                if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+                  
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+                if ($truthy(self.herebody_s)) {
+                  
+                  p = $rb_minus(self.herebody_s, 1);
+                  self.herebody_s = nil;
+                };
               };
+              if (($truthy(current_literal['$words?']()) && ($not(self['$eof_codepoint?'](self.source_pts['$[]'](p)))))) {
+                current_literal.$extend_space(self.ts, self.te)
+              } else {
+                
+                current_literal.$extend_string(self.$tok(), self.ts, self.te);
+                current_literal.$flush_string();
+              };;
+            } else if ($eqeqeq(194, $ret_or_1)) {
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
-              current_literal.$extend_string(string, self.ts, self.te)
-            };;}
-            else if ((203)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            if (self.te['$=='](pe)) {
-              self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))};
-            if ($truthy(current_literal['$heredoc?']())) {
+              self.te = $rb_plus(p, 1);
               
-              line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
-              if ($truthy(self['$version?'](18, 19, 20))) {
-                line = line.$gsub(/\r.*$/, "".$freeze())};
-              if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+              string = self.$tok();
+              if (($truthy($rb_ge(self.version, 22)) && ($not(self.cond['$active?']())))) {
+                lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))
+              };
+              current_literal = self.$literal();
+              if (($not(current_literal['$heredoc?']()) && ($truthy((token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead)))))) {
                 
-                self.herebody_s = self.te;
-                p = $rb_minus(current_literal.$heredoc_e(), 1);
-                self.cs = self.$pop_literal();
+                if ($eqeq(token['$[]'](0), "tLABEL_END")) {
+                  
+                  p = $rb_plus(p, 1);
+                  self.$pop_literal();
+                  self.cs = 795;
+                } else {
+                  self.cs = self.$pop_literal()
+                };
                 
                 p = $rb_plus(p, 1);
                 _goto_level = _out;
                 continue;;;
               } else {
+                current_literal.$extend_string(string, self.ts, self.te)
+              };;
+            } else if ($eqeqeq(201, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              if ($truthy($rb_ge(self.version, 27))) {
+                self.$literal().$extend_string(self.$tok(), self.ts, self.te)
+              } else {
                 
-                current_literal.$infer_indent_level(line);
-                self.herebody_s = self.te;
-              };
-            } else {
+                message = ($truthy(self.$tok()['$start_with?']("\#@@")) ? ("cvar_name") : ("ivar_name"));
+                self.$diagnostic("error", message, $hash2(["name"], {"name": self.$tok($rb_plus(self.ts, 1), self.te)}), self.$range($rb_plus(self.ts, 1), self.te));
+              };;
+            } else if ($eqeqeq(200, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              current_literal.$flush_string();
+              current_literal.$extend_content();
+              self.$emit("tSTRING_DVAR", nil, self.ts, $rb_plus(self.ts, 1));
+              p = self.ts;
+              
               
-              if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+              $writer = [self.top, self.cs];
+              $send(self.stack, '[]=', $to_a($writer));
+              $writer[$rb_minus($writer["length"], 1)];;
+              self.top = $rb_plus(self.top, 1);
+              self.cs = 347;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(197, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$literal().$extend_space(self.ts, self.te);;
+            } else if ($eqeqeq(198, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              string = self.$tok();
+              if (($truthy($rb_ge(self.version, 22)) && ($not(self.cond['$active?']())))) {
+                lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))
+              };
+              current_literal = self.$literal();
+              if (($not(current_literal['$heredoc?']()) && ($truthy((token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead)))))) {
                 
-                self.cs = self.$pop_literal();
+                if ($eqeq(token['$[]'](0), "tLABEL_END")) {
+                  
+                  p = $rb_plus(p, 1);
+                  self.$pop_literal();
+                  self.cs = 795;
+                } else {
+                  self.cs = self.$pop_literal()
+                };
                 
                 p = $rb_plus(p, 1);
                 _goto_level = _out;
-                continue;;;};
-              if ($truthy(self.herebody_s)) {
-                
-                p = $rb_minus(self.herebody_s, 1);
-                self.herebody_s = nil;};
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_57 = current_literal['$words?']()))) {
-              return self['$eof_codepoint?'](self.source_pts['$[]'](p))['$!']()
-            } else {
-              return $ret_or_57
-            }; return nil; })())) {
-              current_literal.$extend_space(self.ts, self.te)
-            } else {
+                continue;;;
+              } else {
+                current_literal.$extend_string(string, self.ts, self.te)
+              };;
+            } else if ($eqeqeq(14, $ret_or_1)) {
               
-              current_literal.$extend_string(self.$tok(), self.ts, self.te);
-              current_literal.$flush_string();
-            };;}
-            else if ((202)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            string = self.$tok();
-            if ($truthy((function() {if ($truthy(($ret_or_58 = $rb_ge(self.version, 22)))) {
-              return self.cond['$active?']()['$!']()
-            } else {
-              return $ret_or_58
-            }; return nil; })())) {
-              lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))};
-            current_literal = self.$literal();
-            if ($truthy((function() {if ($truthy(($ret_or_59 = current_literal['$heredoc?']()['$!']()))) {
               
-              return (token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead));
-            } else {
-              return $ret_or_59
-            }; return nil; })())) {
+              p = $rb_minus(self.te, 1);;
               
-              if (token['$[]'](0)['$==']("tLABEL_END")) {
+              string = self.$tok();
+              if (($truthy($rb_ge(self.version, 22)) && ($not(self.cond['$active?']())))) {
+                lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))
+              };
+              current_literal = self.$literal();
+              if (($not(current_literal['$heredoc?']()) && ($truthy((token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead)))))) {
+                
+                if ($eqeq(token['$[]'](0), "tLABEL_END")) {
+                  
+                  p = $rb_plus(p, 1);
+                  self.$pop_literal();
+                  self.cs = 795;
+                } else {
+                  self.cs = self.$pop_literal()
+                };
                 
                 p = $rb_plus(p, 1);
-                self.$pop_literal();
-                self.cs = 795;
+                _goto_level = _out;
+                continue;;;
               } else {
-                self.cs = self.$pop_literal()
+                current_literal.$extend_string(string, self.ts, self.te)
+              };;
+            } else if ($eqeqeq(203, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              current_literal = self.$literal();
+              if ($eqeq(self.te, pe)) {
+                self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))
+              };
+              if ($truthy(current_literal['$heredoc?']())) {
+                
+                line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  line = line.$gsub(/\r.*$/, "".$freeze())
+                };
+                if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+                  
+                  self.herebody_s = self.te;
+                  p = $rb_minus(current_literal.$heredoc_e(), 1);
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  current_literal.$infer_indent_level(line);
+                  self.herebody_s = self.te;
+                };
+              } else {
+                
+                if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+                  
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+                if ($truthy(self.herebody_s)) {
+                  
+                  p = $rb_minus(self.herebody_s, 1);
+                  self.herebody_s = nil;
+                };
               };
+              if (($truthy(current_literal['$words?']()) && ($not(self['$eof_codepoint?'](self.source_pts['$[]'](p)))))) {
+                current_literal.$extend_space(self.ts, self.te)
+              } else {
+                
+                current_literal.$extend_string(self.$tok(), self.ts, self.te);
+                current_literal.$flush_string();
+              };;
+            } else if ($eqeqeq(202, $ret_or_1)) {
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
-              current_literal.$extend_string(string, self.ts, self.te)
-            };;}
-            else if ((205)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$literal().$extend_space(self.ts, self.te);;}
-            else if ((206)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit("tREGEXP_OPT", self.$tok(self.ts, $rb_minus(self.te, 1)), self.ts, $rb_minus(self.te, 1));
-            p = $rb_minus(p, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((207)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            unknown_options = self.$tok().$scan(/[^imxouesn]/);
-            if ($truthy(unknown_options['$any?']())) {
-              self.$diagnostic("error", "regexp_options", $hash2(["options"], {"options": unknown_options.$join()}))};
-            self.$emit("tREGEXP_OPT");
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((16)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            if ($truthy(self.$tok()['$=~'](/^\$([1-9][0-9]*)$/))) {
-              self.$emit("tNTH_REF", self.$tok($rb_plus(self.ts, 1)).$to_i())
-            } else if ($truthy(self.$tok()['$=~'](/^\$([&`'+])$/))) {
-              self.$emit("tBACK_REF")
-            } else {
-              self.$emit("tGVAR")
-            };
-            self.cs = self.$stack_pop();
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((208)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            if ($truthy(self.$tok()['$=~'](/^\$([1-9][0-9]*)$/))) {
-              self.$emit("tNTH_REF", self.$tok($rb_plus(self.ts, 1)).$to_i())
-            } else if ($truthy(self.$tok()['$=~'](/^\$([&`'+])$/))) {
-              self.$emit("tBACK_REF")
-            } else {
-              self.$emit("tGVAR")
-            };
-            self.cs = self.$stack_pop();
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((210)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            if ($truthy(self.$tok()['$=~'](/^@@[0-9]/))) {
-              self.$diagnostic("error", "cvar_name", $hash2(["name"], {"name": self.$tok()}))};
-            self.$emit("tCVAR");
-            self.cs = self.$stack_pop();
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((209)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            if ($truthy(self.$tok()['$=~'](/^@[0-9]/))) {
-              self.$diagnostic("error", "ivar_name", $hash2(["name"], {"name": self.$tok()}))};
-            self.$emit("tIVAR");
-            self.cs = self.$stack_pop();
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((231)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit_table($$($nesting, 'KEYWORDS_BEGIN'));
-            self.cs = 465;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((217)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit("tIDENTIFIER");
-            self.cs = 465;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((18)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            self.cs = 810;
-            
-            
-            $writer = [self.top, self.cs];
-            $send(self.stack, '[]=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];;
-            self.top = $rb_plus(self.top, 1);
-            self.cs = 347;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((214)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            self.cs = 465;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((226)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            p = $rb_minus(p, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((20)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            if ($truthy(self['$version?'](23))) {
+              self.te = $rb_plus(p, 1);
               
-              $b = [self.$tok()['$[]']($range(0, -2, false)), self.$tok()['$[]'](-1).$chr()], (type = $b[0]), (delimiter = $b[1]), $b;
+              string = self.$tok();
+              if (($truthy($rb_ge(self.version, 22)) && ($not(self.cond['$active?']())))) {
+                lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))
+              };
+              current_literal = self.$literal();
+              if (($not(current_literal['$heredoc?']()) && ($truthy((token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead)))))) {
+                
+                if ($eqeq(token['$[]'](0), "tLABEL_END")) {
+                  
+                  p = $rb_plus(p, 1);
+                  self.$pop_literal();
+                  self.cs = 795;
+                } else {
+                  self.cs = self.$pop_literal()
+                };
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else {
+                current_literal.$extend_string(string, self.ts, self.te)
+              };;
+            } else if ($eqeqeq(205, $ret_or_1)) {
               
-              self.cs = self.$push_literal(type, delimiter, self.ts);
-              _goto_level = _again;
-              continue;;;
-            } else {
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              p = $rb_minus(self.ts, 1);
+              self.$literal().$extend_space(self.ts, self.te);;
+            } else if ($eqeqeq(206, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit("tREGEXP_OPT", self.$tok(self.ts, $rb_minus(self.te, 1)), self.ts, $rb_minus(self.te, 1));
+              p = $rb_minus(p, 1);
               
               self.cs = 810;
               _goto_level = _again;
-              continue;;;
-            };;}
-            else if ((213)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((212)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((230)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit_table($$($nesting, 'KEYWORDS_BEGIN'));
-            self.cs = 465;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((227)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tCONSTANT");
-            self.cs = 465;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((229)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tIDENTIFIER");
-            self.cs = 465;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((224)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            self.cs = 810;
-            
-            
-            $writer = [self.top, self.cs];
-            $send(self.stack, '[]=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];;
-            self.top = $rb_plus(self.top, 1);
-            self.cs = 347;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((220)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            self.cs = 465;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((225)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((218)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);}
-            else if ((223)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((19)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            self.cs = 465;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((17)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((216)['$===']($case)) {
-            $case = self.act;
-            if ((43)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'KEYWORDS_BEGIN'));
-            self.cs = 465;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((44)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit("tCONSTANT");
-            self.cs = 465;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((45)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit("tIDENTIFIER");
-            self.cs = 465;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;};}
-            else if ((22)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit("tLABEL", self.$tok(self.ts, $rb_minus(self.te, 2)), self.ts, $rb_minus(self.te, 1));
-            p = $rb_minus(p, 1);
-            self.cs = 795;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((23)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            if ($truthy((function() {if ($truthy(($ret_or_60 = $rb_ge(self.version, 31)))) {
-              return self.context.$in_argdef()
-            } else {
-              return $ret_or_60
-            }; return nil; })())) {
+              continue;;;;
+            } else if ($eqeqeq(207, $ret_or_1)) {
               
-              self.$emit("tBDOT3", "...".$freeze());
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              unknown_options = self.$tok().$scan(/[^imxouesn]/);
+              if ($truthy(unknown_options['$any?']())) {
+                self.$diagnostic("error", "regexp_options", $hash2(["options"], {"options": unknown_options.$join()}))
+              };
+              self.$emit("tREGEXP_OPT");
               self.cs = 810;
               
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;
-            } else {
+              continue;;;;
+            } else if ($eqeqeq(16, $ret_or_1)) {
               
-              p = $rb_minus(p, 3);
+              self.te = $rb_plus(p, 1);
               
-              self.cs = 810;
-              _goto_level = _again;
-              continue;;;
-            };;}
-            else if ((233)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((232)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((235)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);}
-            else if ((234)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((21)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((241)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            self.cs = 494;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((240)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((239)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((251)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tCONSTANT");
-            self.cs = self.$arg_or_cmdarg(cmd_state);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((242)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tIDENTIFIER");
-            self.cs = self.$arg_or_cmdarg(cmd_state);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((247)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            self.cs = 494;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((245)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);}
-            else if ((250)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((274)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((257)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            if (self.$tok(tm, $rb_plus(tm, 1))['$==']("/".$freeze())) {
-              if ($truthy($rb_lt(self.version, 30))) {
-                self.$diagnostic("warning", "ambiguous_literal", nil, self.$range(tm, $rb_plus(tm, 1)))
-              } else {
-                self.$diagnostic("warning", "ambiguous_regexp", nil, self.$range(tm, $rb_plus(tm, 1)))
-              }};
-            p = $rb_minus(tm, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((263)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            p = $rb_minus(p, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((25)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((265)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(tm, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((40)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((252)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((253)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((264)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((260)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$diagnostic("warning", "ambiguous_prefix", $hash2(["prefix"], {"prefix": self.$tok(tm, self.te)}), self.$range(tm, self.te));
-            p = $rb_minus(tm, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((262)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((256)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((255)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);}
-            else if ((273)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((26)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;}
-            else if ((42)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((24)['$===']($case)) {
-            $case = self.act;
-            if ((72)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            if (self.$tok(tm, $rb_plus(tm, 1))['$==']("/".$freeze())) {
-              if ($truthy($rb_lt(self.version, 30))) {
-                self.$diagnostic("warning", "ambiguous_literal", nil, self.$range(tm, $rb_plus(tm, 1)))
+              if ($truthy(self.$tok()['$=~'](/^\$([1-9][0-9]*)$/))) {
+                self.$emit("tNTH_REF", self.$tok($rb_plus(self.ts, 1)).$to_i())
+              } else if ($truthy(self.$tok()['$=~'](/^\$([&`'+])$/))) {
+                self.$emit("tBACK_REF")
               } else {
-                self.$diagnostic("warning", "ambiguous_regexp", nil, self.$range(tm, $rb_plus(tm, 1)))
-              }};
-            p = $rb_minus(tm, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;}
-            else if ((73)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$diagnostic("warning", "ambiguous_prefix", $hash2(["prefix"], {"prefix": self.$tok(tm, self.te)}), self.$range(tm, self.te));
-            p = $rb_minus(tm, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;}
-            else if ((78)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;}
-            else {
-            
-            p = $rb_minus(self.te, 1);;};}
-            else if ((44)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 494;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((278)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((279)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 494;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((45)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 494;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((43)['$===']($case)) {
-            $case = self.act;
-            if ((85)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            if ($truthy(self.cond['$active?']())) {
-              self.$emit("kDO_COND", "do".$freeze(), $rb_minus(self.te, 2), self.te)
-            } else {
-              self.$emit("kDO", "do".$freeze(), $rb_minus(self.te, 2), self.te)
-            };
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((86)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 494;
-            _goto_level = _again;
-            continue;;;};}
-            else if ((289)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit_do(true);
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((282)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((283)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((284)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);}
-            else if ((287)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((293)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((292)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((301)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((295)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);}
-            else if ((299)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((294)['$===']($case)) {
-            $case = self.act;
-            if ((93)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'KEYWORDS'));
-            self.cs = 563;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((94)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;};}
-            else if ((57)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit("tUNARY_NUM", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
-            p = $rb_minus(p, 1);
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((334)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            type = (delimiter = self.$tok()['$[]'](0).$chr());
-            p = $rb_minus(p, 1);
-            
-            self.cs = self.$push_literal(type, delimiter, self.ts);
-            _goto_level = _again;
-            continue;;;;}
-            else if ((326)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            $b = [self.source_buffer.$slice(self.ts).$chr(), self.$tok()['$[]'](-1).$chr()], (type = $b[0]), (delimiter = $b[1]), $b;
-            
-            self.cs = self.$push_literal(type, delimiter, self.ts);
-            _goto_level = _again;
-            continue;;;;}
-            else if ((55)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            $b = [self.$tok()['$[]']($range(0, -2, false)), self.$tok()['$[]'](-1).$chr()], (type = $b[0]), (delimiter = $b[1]), $b;
-            
-            self.cs = self.$push_literal(type, delimiter, self.ts);
-            _goto_level = _again;
-            continue;;;;}
-            else if ((347)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            p = $rb_minus(p, 1);
-            self.$emit("tSYMBEG", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
-            
-            self.cs = 352;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((335)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            $b = [self.$tok(), self.$tok()['$[]'](-1).$chr()], (type = $b[0]), (delimiter = $b[1]), $b;
-            
-            self.cs = self.$push_literal(type, delimiter, self.ts);
-            _goto_level = _again;
-            continue;;;;}
-            else if ((346)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1), $rb_plus(self.ts, 2)));
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((69)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1)), self.ts);
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((357)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            escape = $hash2([" ", "\r", "\n", "\t", "\v", "\f"], {" ": "\\s", "\r": "\\r", "\n": "\\n", "\t": "\\t", "\v": "\\v", "\f": "\\f"})['$[]'](self.source_buffer.$slice($rb_plus(self.ts, 1)));
-            self.$diagnostic("warning", "invalid_escape_use", $hash2(["escape"], {"escape": escape}), self.$range());
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((356)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$diagnostic("fatal", "incomplete_escape", nil, self.$range(self.ts, $rb_plus(self.ts, 1)));;}
-            else if ((336)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit_table($$($nesting, 'PUNCTUATION_BEGIN'));
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((52)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            if ($truthy(self['$version?'](18))) {
+                self.$emit("tGVAR")
+              };
+              self.cs = self.$stack_pop();
               
-              ident = self.$tok(self.ts, $rb_minus(self.te, 2));
-              self.$emit((function() {if ($truthy(self.source_buffer.$slice(self.ts)['$=~'](/[A-Z]/))) {
-                return "tCONSTANT"
-              } else {
-                return "tIDENTIFIER"
-              }; return nil; })(), ident, self.ts, $rb_minus(self.te, 2));
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(208, $ret_or_1)) {
+              
+              self.te = p;
               p = $rb_minus(p, 1);
-              if ($truthy((function() {if ($truthy(($ret_or_61 = self.static_env['$nil?']()['$!']()))) {
-                return self.static_env['$declared?'](ident)
-              } else {
-                return $ret_or_61
-              }; return nil; })())) {
-                self.cs = 810
+              
+              if ($truthy(self.$tok()['$=~'](/^\$([1-9][0-9]*)$/))) {
+                self.$emit("tNTH_REF", self.$tok($rb_plus(self.ts, 1)).$to_i())
+              } else if ($truthy(self.$tok()['$=~'](/^\$([&`'+])$/))) {
+                self.$emit("tBACK_REF")
               } else {
-                self.cs = self.$arg_or_cmdarg(cmd_state)
+                self.$emit("tGVAR")
               };
-            } else {
+              self.cs = self.$stack_pop();
               
-              self.$emit("tLABEL", self.$tok(self.ts, $rb_minus(self.te, 2)), self.ts, $rb_minus(self.te, 1));
-              self.cs = 795;
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((49)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit("tIDENTIFIER", ident_tok, ident_ts, ident_te);
-            p = $rb_minus(ident_te, 1);
-            if ($truthy((function() {if ($truthy(($ret_or_62 = (function() {if ($truthy(($ret_or_63 = self.static_env['$nil?']()['$!']()))) {
-              return self.static_env['$declared?'](ident_tok)
-            } else {
-              return $ret_or_63
-            }; return nil; })()))) {
-              return $rb_lt(self.version, 25)
-            } else {
-              return $ret_or_62
-            }; return nil; })())) {
-              self.cs = 465
-            } else {
-              self.cs = 525
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((320)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            self.cs_before_block_comment = self.cs;
-            
-            self.cs = 186;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((56)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((304)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((330)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tUNARY_NUM", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
-            p = $rb_minus(p, 1);
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((329)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tSTAR", "*".$freeze());
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((325)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$diagnostic("fatal", "string_eof", nil, self.$range(self.ts, $rb_plus(self.ts, 1)));;}
-            else if ((354)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$diagnostic("error", "unterminated_heredoc_id", nil, self.$range(self.ts, $rb_plus(self.ts, 1)));;}
-            else if ((337)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1)), self.ts);
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((350)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            if ($truthy($rb_ge(self.version, 27))) {
-              self.$diagnostic("error", diag_msg, $hash2(["name"], {"name": self.$tok(tm, self.te)}), self.$range(tm, self.te))
-            } else {
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(210, $ret_or_1)) {
               
-              self.$emit("tCOLON", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
-              p = self.ts;
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((355)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$diagnostic("fatal", "incomplete_escape", nil, self.$range(self.ts, $rb_plus(self.ts, 1)));;}
-            else if ((361)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((327)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit_table($$($nesting, 'PUNCTUATION_BEGIN'));
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((331)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            if ($truthy($rb_ge(self.version, 27))) {
-              self.$emit("tBDOT2")
-            } else {
-              self.$emit("tDOT2")
-            };
-            self.cs = 563;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((332)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            followed_by_nl = $rb_minus(self.te, 1)['$=='](self.newline_s);
-            nl_emitted = false;
-            dots_te = (function() {if ($truthy(followed_by_nl)) {
-              return $rb_minus(self.te, 1)
-            } else {
-              return self.te
-            }; return nil; })();
-            if ($truthy($rb_ge(self.version, 30))) {
-              if ($truthy((function() {if ($truthy(($ret_or_64 = self.lambda_stack['$any?']()))) {
-                return $rb_plus(self.lambda_stack.$last(), 1)['$=='](self.paren_nest)
-              } else {
-                return $ret_or_64
-              }; return nil; })())) {
-                self.$emit("tDOT3", "...".$freeze(), self.ts, dots_te)
-              } else {
-                
-                self.$emit("tBDOT3", "...".$freeze(), self.ts, dots_te);
-                if ($truthy((function() {if ($truthy(($ret_or_65 = (function() {if ($truthy(($ret_or_66 = $rb_ge(self.version, 31)))) {
-                  return followed_by_nl
-                } else {
-                  return $ret_or_66
-                }; return nil; })()))) {
-                  return self.context.$in_argdef()
-                } else {
-                  return $ret_or_65
-                }; return nil; })())) {
-                  
-                  self.$emit("tNL", $rb_minus(self.te, 1), self.te);
-                  nl_emitted = true;};
-              }
-            } else if ($truthy($rb_ge(self.version, 27))) {
-              self.$emit("tBDOT3", "...".$freeze(), self.ts, dots_te)
-            } else {
-              self.$emit("tDOT3", "...".$freeze(), self.ts, dots_te)
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_67 = followed_by_nl))) {
-              return nl_emitted['$!']()
-            } else {
-              return $ret_or_67
-            }; return nil; })())) {
-              p = $rb_minus(p, 1)};
-            self.cs = 563;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((307)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tIDENTIFIER");
-            if ($truthy((function() {if ($truthy(($ret_or_68 = self.static_env['$nil?']()['$!']()))) {
-              return self.static_env['$declared?'](self.$tok())
-            } else {
-              return $ret_or_68
-            }; return nil; })())) {
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              self.cs = 465;
+              if ($truthy(self.$tok()['$=~'](/^@@[0-9]/))) {
+                self.$diagnostic("error", "cvar_name", $hash2(["name"], {"name": self.$tok()}))
+              };
+              self.$emit("tCVAR");
+              self.cs = self.$stack_pop();
               
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;
-            } else {
+              continue;;;;
+            } else if ($eqeqeq(209, $ret_or_1)) {
               
-              self.cs = self.$arg_or_cmdarg(cmd_state);
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              if ($truthy(self.$tok()['$=~'](/^@[0-9]/))) {
+                self.$diagnostic("error", "ivar_name", $hash2(["name"], {"name": self.$tok()}))
+              };
+              self.$emit("tIVAR");
+              self.cs = self.$stack_pop();
               
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;
-            };;}
-            else if ((317)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);}
-            else if ((319)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            self.cs_before_block_comment = self.cs;
-            
-            self.cs = 186;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((322)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((54)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            self.$diagnostic("fatal", "string_eof", nil, self.$range(self.ts, $rb_plus(self.ts, 1)));;}
-            else if ((73)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            self.$diagnostic("error", "unterminated_heredoc_id", nil, self.$range(self.ts, $rb_plus(self.ts, 1)));;}
-            else if ((74)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            value = (function() {if ($truthy(($ret_or_69 = self.escape))) {
-              return $ret_or_69
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((48)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            self.$emit("tIDENTIFIER");
-            if ($truthy((function() {if ($truthy(($ret_or_70 = self.static_env['$nil?']()['$!']()))) {
-              return self.static_env['$declared?'](self.$tok())
-            } else {
-              return $ret_or_70
-            }; return nil; })())) {
+              continue;;;;
+            } else if ($eqeqeq(231, $ret_or_1)) {
               
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit_table($$('KEYWORDS_BEGIN'));
               self.cs = 465;
               
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;
-            } else {
+              continue;;;;
+            } else if ($eqeqeq(217, $ret_or_1)) {
               
-              self.cs = self.$arg_or_cmdarg(cmd_state);
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit("tIDENTIFIER");
+              self.cs = 465;
               
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;
-            };;}
-            else if ((53)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;}
-            else if ((68)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((51)['$===']($case)) {
-            $case = self.act;
-            if ((99)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit("tUNARY_NUM", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
-            p = $rb_minus(p, 1);
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((106)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$diagnostic("error", "unterminated_heredoc_id", nil, self.$range(self.ts, $rb_plus(self.ts, 1)));}
-            else if ((117)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            if ($truthy($rb_ge(self.version, 27))) {
+              continue;;;;
+            } else if ($eqeqeq(18, $ret_or_1)) {
               
-              self.$emit("tPIPE", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
-              p = $rb_minus(p, 1);
-              self.cs = 563;
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              self.cs = 810;
+              
+              
+              $writer = [self.top, self.cs];
+              $send(self.stack, '[]=', $to_a($writer));
+              $writer[$rb_minus($writer["length"], 1)];;
+              self.top = $rb_plus(self.top, 1);
+              self.cs = 347;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(214, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit_table($$('PUNCTUATION'));
+              self.cs = 465;
               
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;
-            } else {
+              continue;;;;
+            } else if ($eqeqeq(226, $ret_or_1)) {
               
-              p = $rb_minus(p, 2);
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              p = $rb_minus(p, 1);
               
               self.cs = 810;
               _goto_level = _again;
-              continue;;;
-            };}
-            else if ((121)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'PUNCTUATION_BEGIN'));
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((122)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit("kRESCUE", "rescue".$freeze(), self.ts, tm);
-            p = $rb_minus(tm, 1);
-            self.cs = 539;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((123)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'KEYWORDS_BEGIN'));
-            self.command_start = true;
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((127)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;}
-            else if ((128)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit("tIDENTIFIER");
-            if ($truthy((function() {if ($truthy(($ret_or_71 = self.static_env['$nil?']()['$!']()))) {
-              return self.static_env['$declared?'](self.$tok())
-            } else {
-              return $ret_or_71
-            }; return nil; })())) {
+              continue;;;;
+            } else if ($eqeqeq(20, $ret_or_1)) {
               
-              self.cs = 465;
+              self.te = $rb_plus(p, 1);
+              
+              if ($truthy(self['$version?'](23))) {
+                
+                $b = [self.$tok()['$[]']($range(0, -2, false)), self.$tok()['$[]'](-1).$chr()], (type = $b[0]), (delimiter = $b[1]), $b;
+                
+                self.cs = self.$push_literal(type, delimiter, self.ts);
+                _goto_level = _again;
+                continue;;;
+              } else {
+                
+                p = $rb_minus(self.ts, 1);
+                
+                self.cs = 810;
+                _goto_level = _again;
+                continue;;;
+              };;
+            } else if ($eqeqeq(213, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(212, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(p, 1);
               
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;
-            } else {
+              continue;;;;
+            } else if ($eqeqeq(230, $ret_or_1)) {
               
-              self.cs = self.$arg_or_cmdarg(cmd_state);
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit_table($$('KEYWORDS_BEGIN'));
+              self.cs = 465;
               
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;
-            };}
-            else if ((132)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;};}
-            else if ((395)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((396)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((397)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);}
-            else if ((401)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((77)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((405)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            
-            self.cs = self.$push_literal(self.$tok(), self.$tok(), self.ts);
-            _goto_level = _again;
-            continue;;;;}
-            else if ((404)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((403)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((407)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);}
-            else if ((406)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((76)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((440)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit("tLAMBDA", "->".$freeze(), self.ts, $rb_plus(self.ts, 2));
-            self.lambda_stack.$push(self.paren_nest);
-            self.cs = 465;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((86)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit("kCLASS", "class".$freeze(), self.ts, $rb_plus(self.ts, 5));
-            self.$emit("tLSHFT", "<<".$freeze(), $rb_minus(self.te, 2), self.te);
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((415)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            $b = [self.$tok(), self.$tok()['$[]'](-1).$chr()], (type = $b[0]), (delimiter = $b[1]), $b;
-            
-            self.cs = self.$push_literal(type, delimiter, self.ts, nil, false, false, true);
-            _goto_level = _again;
-            continue;;;;}
-            else if ((79)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            
-            $writer = [self.top, self.cs];
-            $send(self.stack, '[]=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];;
-            self.top = $rb_plus(self.top, 1);
-            self.cs = 347;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((436)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            self.cs = 473;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((489)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((429)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((434)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit("tOP_ASGN", self.$tok(self.ts, $rb_minus(self.te, 1)));
-            self.cs = 563;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((420)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit("tEH", "?".$freeze());
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((417)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            self.cs = 563;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((419)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit("tSEMI", ";".$freeze());
-            self.command_start = true;
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((494)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$diagnostic("error", "bare_backslash", nil, self.$range(self.ts, $rb_plus(self.ts, 1)));
-            p = $rb_minus(p, 1);;}
-            else if ((414)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$diagnostic("fatal", "unexpected", $hash2(["character"], {"character": self.$tok().$inspect()['$[]']($range(1, -2, false))}));;}
-            else if ((413)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((505)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit_table($$($nesting, 'KEYWORDS'));
-            self.cs = 352;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((503)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("kCLASS", "class".$freeze(), self.ts, $rb_plus(self.ts, 5));
-            self.$emit("tLSHFT", "<<".$freeze(), $rb_minus(self.te, 2), self.te);
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((502)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit_table($$($nesting, 'KEYWORDS'));
-            self.command_start = true;
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((444)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$diagnostic("error", "no_dot_digit_literal");;}
-            else if ((491)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tCONSTANT");
-            self.cs = self.$arg_or_cmdarg(cmd_state);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((433)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            
-            $writer = [self.top, self.cs];
-            $send(self.stack, '[]=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];;
-            self.top = $rb_plus(self.top, 1);
-            self.cs = 347;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((441)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            self.cs = 473;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((497)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tIDENTIFIER");
-            if ($truthy((function() {if ($truthy(($ret_or_72 = self.static_env['$nil?']()['$!']()))) {
-              return self.static_env['$declared?'](self.$tok())
-            } else {
-              return $ret_or_72
-            }; return nil; })())) {
+              continue;;;;
+            } else if ($eqeqeq(227, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
               
+              self.$emit("tCONSTANT");
               self.cs = 465;
               
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;
-            } else {
+              continue;;;;
+            } else if ($eqeqeq(229, $ret_or_1)) {
               
-              self.cs = self.$arg_or_cmdarg(cmd_state);
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tIDENTIFIER");
+              self.cs = 465;
               
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;
-            };;}
-            else if ((439)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((435)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((428)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            self.cs = 563;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((442)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            self.cs = 563;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((426)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);}
-            else if ((432)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$diagnostic("fatal", "unexpected", $hash2(["character"], {"character": self.$tok().$inspect()['$[]']($range(1, -2, false))}));;}
-            else if ((84)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            digits = self.$tok(self.num_digits_s, self.num_suffix_s);
-            if ($truthy(digits['$end_with?']("_".$freeze()))) {
-              self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
-            } else if ($truthy((function() {if ($truthy(($ret_or_73 = (function() {if ($truthy(($ret_or_74 = digits['$empty?']()))) {
-              return self.num_base['$=='](8)
-            } else {
-              return $ret_or_74
-            }; return nil; })()))) {
-              return self['$version?'](18)
-            } else {
-              return $ret_or_73
-            }; return nil; })())) {
-              digits = "0".$freeze()
-            } else if ($truthy(digits['$empty?']())) {
-              self.$diagnostic("error", "empty_numeric")
-            } else if ($truthy((function() {if ($truthy(($ret_or_75 = self.num_base['$=='](8)))) {
-              
-              return (invalid_idx = digits.$index(/[89]/));
-            } else {
-              return $ret_or_75
-            }; return nil; })())) {
+              continue;;;;
+            } else if ($eqeqeq(224, $ret_or_1)) {
               
-              invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
-              self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));};
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits.$to_i(self.num_base))
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((80)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            self.$diagnostic("error", "no_dot_digit_literal");;}
-            else if ((83)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            digits = self.$tok(self.ts, self.num_suffix_s);
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              p = $rb_minus(self.ts, 1);
+              self.cs = 810;
               
-              self.$emit("tFLOAT", self.$Float(digits), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits)
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((78)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            self.$diagnostic("fatal", "unexpected", $hash2(["character"], {"character": self.$tok().$inspect()['$[]']($range(1, -2, false))}));;}
-            else if ((81)['$===']($case)) {
-            $case = self.act;
-            if ((145)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            if (self.lambda_stack.$last()['$=='](self.paren_nest)) {
-              
-              self.lambda_stack.$pop();
-              if (self.$tok()['$==']("{".$freeze())) {
-                self.$emit("tLAMBEG", "{".$freeze())
-              } else {
-                self.$emit("kDO_LAMBDA", "do".$freeze())
-              };
-            } else if (self.$tok()['$==']("{".$freeze())) {
-              self.$emit("tLCURLY", "{".$freeze())
-            } else {
-              self.$emit_do()
-            };
-            if (self.$tok()['$==']("{".$freeze())) {
-              self.paren_nest = $rb_plus(self.paren_nest, 1)};
-            self.command_start = true;
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((146)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'KEYWORDS'));
-            self.cs = 352;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((147)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit("kCLASS", "class".$freeze(), self.ts, $rb_plus(self.ts, 5));
-            self.$emit("tLSHFT", "<<".$freeze(), $rb_minus(self.te, 2), self.te);
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((148)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'KEYWORDS'));
-            self.cs = 563;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((149)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'KEYWORDS'));
-            self.command_start = true;
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((150)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'KEYWORDS'));
-            self.cs = 539;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((151)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'KEYWORDS'));
-            if ($truthy((function() {if ($truthy(($ret_or_76 = self['$version?'](18)))) {
-              return self.$tok()['$==']("not".$freeze())
-            } else {
-              return $ret_or_76
-            }; return nil; })())) {
-              
-              self.cs = 563;
-              
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
-              
-              self.cs = 494;
-              
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            };}
-            else if ((152)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            if ($truthy(self['$version?'](18))) {
-              
-              self.$emit("tIDENTIFIER");
-              if ($truthy((function() {if ($truthy(($ret_or_77 = self.static_env['$nil?']()['$!']()))) {
-                return self.static_env['$declared?'](self.$tok())
-              } else {
-                return $ret_or_77
-              }; return nil; })())) {
-              } else {
-                self.cs = self.$arg_or_cmdarg(cmd_state)
-              };
-            } else {
-              self.$emit("k__ENCODING__", "__ENCODING__".$freeze())
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((153)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'KEYWORDS'));
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((154)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            digits = self.$tok(self.num_digits_s, self.num_suffix_s);
-            if ($truthy(digits['$end_with?']("_".$freeze()))) {
-              self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
-            } else if ($truthy((function() {if ($truthy(($ret_or_78 = (function() {if ($truthy(($ret_or_79 = digits['$empty?']()))) {
-              return self.num_base['$=='](8)
-            } else {
-              return $ret_or_79
-            }; return nil; })()))) {
-              return self['$version?'](18)
-            } else {
-              return $ret_or_78
-            }; return nil; })())) {
-              digits = "0".$freeze()
-            } else if ($truthy(digits['$empty?']())) {
-              self.$diagnostic("error", "empty_numeric")
-            } else if ($truthy((function() {if ($truthy(($ret_or_80 = self.num_base['$=='](8)))) {
-              
-              return (invalid_idx = digits.$index(/[89]/));
-            } else {
-              return $ret_or_80
-            }; return nil; })())) {
-              
-              invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
-              self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));};
-            if ($truthy(self['$version?'](18, 19, 20))) {
-              
-              self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits.$to_i(self.num_base))
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((156)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            if ($truthy(self['$version?'](18, 19, 20))) {
-              self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": self.$tok($rb_minus(self.te, 1), self.te)}), self.$range($rb_minus(self.te, 1), self.te))
-            } else {
-              
-              self.$emit("tINTEGER", self.$tok(self.ts, $rb_minus(self.te, 1)).$to_i(), self.ts, $rb_minus(self.te, 1));
-              p = $rb_minus(p, 1);
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            };}
-            else if ((157)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            if ($truthy(self['$version?'](18, 19, 20))) {
-              self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": self.$tok($rb_minus(self.te, 1), self.te)}), self.$range($rb_minus(self.te, 1), self.te))
-            } else {
+              $writer = [self.top, self.cs];
+              $send(self.stack, '[]=', $to_a($writer));
+              $writer[$rb_minus($writer["length"], 1)];;
+              self.top = $rb_plus(self.top, 1);
+              self.cs = 347;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(220, $ret_or_1)) {
               
-              self.$emit("tFLOAT", self.$tok(self.ts, $rb_minus(self.te, 1)).$to_f(), self.ts, $rb_minus(self.te, 1));
+              self.te = p;
               p = $rb_minus(p, 1);
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            };}
-            else if ((158)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            digits = self.$tok(self.ts, self.num_suffix_s);
-            if ($truthy(self['$version?'](18, 19, 20))) {
-              
-              self.$emit("tFLOAT", self.$Float(digits), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits)
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((160)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit("tCONSTANT");
-            self.cs = self.$arg_or_cmdarg(cmd_state);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((164)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit("tIDENTIFIER");
-            if ($truthy((function() {if ($truthy(($ret_or_81 = self.static_env['$nil?']()['$!']()))) {
-              return self.static_env['$declared?'](self.$tok())
-            } else {
-              return $ret_or_81
-            }; return nil; })())) {
-              
+              self.$emit_table($$('PUNCTUATION'));
               self.cs = 465;
               
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;
-            } else {
-              
-              self.cs = self.$arg_or_cmdarg(cmd_state);
-              
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            };}
-            else if ((165)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            if (tm['$=='](self.te)) {
-              self.$emit("tFID")
-            } else {
-              
-              self.$emit("tIDENTIFIER", self.$tok(self.ts, tm), self.ts, tm);
-              p = $rb_minus(tm, 1);
-            };
-            self.cs = 494;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((167)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((168)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            self.cs = 563;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;};}
-            else if ((516)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit("tNL", nil, self.newline_s, $rb_plus(self.newline_s, 1));
-            if ($truthy($rb_lt(self.version, 27))) {
+              continue;;;;
+            } else if ($eqeqeq(225, $ret_or_1)) {
               
+              self.te = p;
               p = $rb_minus(p, 1);
-              self.cs = 186;
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
+              p = $rb_minus(p, 1);
               
-              self.$emit("tBDOT3");
               self.cs = 563;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(218, $ret_or_1)) {
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            };;}
-            else if ((95)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(tm, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((510)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit("tNL", nil, self.newline_s, $rb_plus(self.newline_s, 1));
-            p = $rb_minus(p, 1);
-            self.cs = 186;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((513)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            if ($truthy($rb_lt(self.version, 27))) {
-              
-              self.$emit("tNL", nil, self.newline_s, $rb_plus(self.newline_s, 1));
+              self.te = p;
               p = $rb_minus(p, 1);
-              self.cs = 186;
+            } else if ($eqeqeq(223, $ret_or_1)) {
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;};;}
-            else if ((515)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tNL", nil, self.newline_s, $rb_plus(self.newline_s, 1));
-            if ($truthy($rb_lt(self.version, 27))) {
+              self.te = p;
+              p = $rb_minus(p, 1);
               
               p = $rb_minus(p, 1);
-              self.cs = 186;
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(19, $ret_or_1)) {
               
-              self.$emit("tBDOT2");
-              self.cs = 563;
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            };;}
-            else if ((514)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(tm, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((512)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tNL", nil, self.newline_s, $rb_plus(self.newline_s, 1));
-            p = $rb_minus(p, 1);
-            self.cs = 186;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((90)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            if ($truthy($rb_lt(self.version, 27))) {
+              p = $rb_minus(self.te, 1);;
               
-              self.$emit("tNL", nil, self.newline_s, $rb_plus(self.newline_s, 1));
-              p = $rb_minus(p, 1);
-              self.cs = 186;
+              self.$emit_table($$('PUNCTUATION'));
+              self.cs = 465;
               
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;};;}
-            else if ((87)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            self.$emit("tNL", nil, self.newline_s, $rb_plus(self.newline_s, 1));
-            p = $rb_minus(p, 1);
-            self.cs = 186;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((91)['$===']($case)) {
-            $case = self.act;
-            if ((181)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            if ($truthy($rb_lt(self.version, 27))) {
+              continue;;;;
+            } else if ($eqeqeq(17, $ret_or_1)) {
+              
+              
+              p = $rb_minus(self.te, 1);;
               
-              self.$emit("tNL", nil, self.newline_s, $rb_plus(self.newline_s, 1));
               p = $rb_minus(p, 1);
-              self.cs = 186;
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;};}
-            else if ((185)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit("tNL", nil, self.newline_s, $rb_plus(self.newline_s, 1));
-            p = $rb_minus(p, 1);
-            self.cs = 186;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;};}
-            else if ((519)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit_comment(self.eq_begin_s, self.te);
-            
-            self.cs = self.cs_before_block_comment;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((518)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$diagnostic("fatal", "embedded_document", nil, self.$range(self.eq_begin_s, $rb_plus(self.eq_begin_s, "=begin".$length())));;}
-            else if ((106)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.eq_begin_s = self.ts;
-            
-            self.cs = 998;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((2)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(pe, 3);;}
-            else if ((98)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            cmd_state = true;
-            p = $rb_minus(p, 1);
-            
-            self.cs = 802;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((99)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((100)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);}
-            else if ((105)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.eq_begin_s = self.ts;
-            
-            self.cs = 998;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((104)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            cmd_state = true;
-            p = $rb_minus(p, 1);
-            
-            self.cs = 802;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((1)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            cmd_state = true;
-            p = $rb_minus(p, 1);
-            
-            self.cs = 802;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((67)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;}
-            else if ((110)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            if (self.te['$=='](pe)) {
-              self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))};
-            if ($truthy(current_literal['$heredoc?']())) {
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(216, $ret_or_1)) {
               
-              line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
-              if ($truthy(self['$version?'](18, 19, 20))) {
-                line = line.$gsub(/\r.*$/, "".$freeze())};
-              if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+              if ($eqeqeq(43, ($ret_or_2 = self.act))) {
+                
                 
-                self.herebody_s = self.te;
-                p = $rb_minus(current_literal.$heredoc_e(), 1);
-                self.cs = self.$pop_literal();
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('KEYWORDS_BEGIN'));
+                self.cs = 465;
                 
                 p = $rb_plus(p, 1);
                 _goto_level = _out;
                 continue;;;
-              } else {
+              } else if ($eqeqeq(44, $ret_or_2)) {
                 
-                current_literal.$infer_indent_level(line);
-                self.herebody_s = self.te;
-              };
-            } else {
-              
-              if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
                 
-                self.cs = self.$pop_literal();
+                p = $rb_minus(self.te, 1);;
+                self.$emit("tCONSTANT");
+                self.cs = 465;
                 
                 p = $rb_plus(p, 1);
                 _goto_level = _out;
-                continue;;;};
-              if ($truthy(self.herebody_s)) {
+                continue;;;
+              } else if ($eqeqeq(45, $ret_or_2)) {
                 
-                p = $rb_minus(self.herebody_s, 1);
-                self.herebody_s = nil;};
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_82 = current_literal['$words?']()))) {
-              return self['$eof_codepoint?'](self.source_pts['$[]'](p))['$!']()
-            } else {
-              return $ret_or_82
-            }; return nil; })())) {
-              current_literal.$extend_space(self.ts, self.te)
-            } else {
-              
-              current_literal.$extend_string(self.$tok(), self.ts, self.te);
-              current_literal.$flush_string();
-            };;;}
-            else if ((143)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            if (self.te['$=='](pe)) {
-              self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))};
-            if ($truthy(current_literal['$heredoc?']())) {
-              
-              line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
-              if ($truthy(self['$version?'](18, 19, 20))) {
-                line = line.$gsub(/\r.*$/, "".$freeze())};
-              if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
                 
-                self.herebody_s = self.te;
-                p = $rb_minus(current_literal.$heredoc_e(), 1);
-                self.cs = self.$pop_literal();
+                p = $rb_minus(self.te, 1);;
+                self.$emit("tIDENTIFIER");
+                self.cs = 465;
                 
                 p = $rb_plus(p, 1);
                 _goto_level = _out;
                 continue;;;
               } else {
-                
-                current_literal.$infer_indent_level(line);
-                self.herebody_s = self.te;
+                nil
               };
-            } else {
+            } else if ($eqeqeq(22, $ret_or_1)) {
               
-              if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
-                
-                self.cs = self.$pop_literal();
-                
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;};
-              if ($truthy(self.herebody_s)) {
-                
-                p = $rb_minus(self.herebody_s, 1);
-                self.herebody_s = nil;};
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_83 = current_literal['$words?']()))) {
-              return self['$eof_codepoint?'](self.source_pts['$[]'](p))['$!']()
-            } else {
-              return $ret_or_83
-            }; return nil; })())) {
-              current_literal.$extend_space(self.ts, self.te)
-            } else {
+              self.te = $rb_plus(p, 1);
               
-              current_literal.$extend_string(self.$tok(), self.ts, self.te);
-              current_literal.$flush_string();
-            };;;}
-            else if ((174)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            if (self.te['$=='](pe)) {
-              self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))};
-            if ($truthy(current_literal['$heredoc?']())) {
+              self.$emit("tLABEL", self.$tok(self.ts, $rb_minus(self.te, 2)), self.ts, $rb_minus(self.te, 1));
+              p = $rb_minus(p, 1);
+              self.cs = 795;
               
-              line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
-              if ($truthy(self['$version?'](18, 19, 20))) {
-                line = line.$gsub(/\r.*$/, "".$freeze())};
-              if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(23, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              if (($truthy($rb_ge(self.version, 31)) && ($truthy(self.context.$in_argdef())))) {
                 
-                self.herebody_s = self.te;
-                p = $rb_minus(current_literal.$heredoc_e(), 1);
-                self.cs = self.$pop_literal();
+                self.$emit("tBDOT3", "...".$freeze());
+                self.cs = 810;
                 
                 p = $rb_plus(p, 1);
                 _goto_level = _out;
                 continue;;;
               } else {
                 
-                current_literal.$infer_indent_level(line);
-                self.herebody_s = self.te;
-              };
-            } else {
-              
-              if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
-                
-                self.cs = self.$pop_literal();
-                
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;};
-              if ($truthy(self.herebody_s)) {
+                p = $rb_minus(p, 3);
                 
-                p = $rb_minus(self.herebody_s, 1);
-                self.herebody_s = nil;};
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_84 = current_literal['$words?']()))) {
-              return self['$eof_codepoint?'](self.source_pts['$[]'](p))['$!']()
-            } else {
-              return $ret_or_84
-            }; return nil; })())) {
-              current_literal.$extend_space(self.ts, self.te)
-            } else {
+                self.cs = 810;
+                _goto_level = _again;
+                continue;;;
+              };;
+            } else if ($eqeqeq(233, $ret_or_1)) {
               
-              current_literal.$extend_string(self.$tok(), self.ts, self.te);
-              current_literal.$flush_string();
-            };;;}
-            else if ((180)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            if (self.te['$=='](pe)) {
-              self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))};
-            if ($truthy(current_literal['$heredoc?']())) {
+              self.te = $rb_plus(p, 1);
               
-              line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
-              if ($truthy(self['$version?'](18, 19, 20))) {
-                line = line.$gsub(/\r.*$/, "".$freeze())};
-              if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
-                
-                self.herebody_s = self.te;
-                p = $rb_minus(current_literal.$heredoc_e(), 1);
-                self.cs = self.$pop_literal();
-                
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;
-              } else {
-                
-                current_literal.$infer_indent_level(line);
-                self.herebody_s = self.te;
-              };
-            } else {
+              p = $rb_minus(p, 1);
               
-              if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
-                
-                self.cs = self.$pop_literal();
-                
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;};
-              if ($truthy(self.herebody_s)) {
-                
-                p = $rb_minus(self.herebody_s, 1);
-                self.herebody_s = nil;};
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_85 = current_literal['$words?']()))) {
-              return self['$eof_codepoint?'](self.source_pts['$[]'](p))['$!']()
-            } else {
-              return $ret_or_85
-            }; return nil; })())) {
-              current_literal.$extend_space(self.ts, self.te)
-            } else {
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(232, $ret_or_1)) {
               
-              current_literal.$extend_string(self.$tok(), self.ts, self.te);
-              current_literal.$flush_string();
-            };;;}
-            else if ((186)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            if (self.te['$=='](pe)) {
-              self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))};
-            if ($truthy(current_literal['$heredoc?']())) {
+              self.te = $rb_plus(p, 1);
               
-              line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
-              if ($truthy(self['$version?'](18, 19, 20))) {
-                line = line.$gsub(/\r.*$/, "".$freeze())};
-              if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
-                
-                self.herebody_s = self.te;
-                p = $rb_minus(current_literal.$heredoc_e(), 1);
-                self.cs = self.$pop_literal();
-                
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;
-              } else {
-                
-                current_literal.$infer_indent_level(line);
-                self.herebody_s = self.te;
-              };
-            } else {
+              p = $rb_minus(p, 1);
               
-              if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
-                
-                self.cs = self.$pop_literal();
-                
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;};
-              if ($truthy(self.herebody_s)) {
-                
-                p = $rb_minus(self.herebody_s, 1);
-                self.herebody_s = nil;};
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_86 = current_literal['$words?']()))) {
-              return self['$eof_codepoint?'](self.source_pts['$[]'](p))['$!']()
-            } else {
-              return $ret_or_86
-            }; return nil; })())) {
-              current_literal.$extend_space(self.ts, self.te)
-            } else {
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(235, $ret_or_1)) {
               
-              current_literal.$extend_string(self.$tok(), self.ts, self.te);
-              current_literal.$flush_string();
-            };;;}
-            else if ((193)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            if (self.te['$=='](pe)) {
-              self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))};
-            if ($truthy(current_literal['$heredoc?']())) {
+              self.te = p;
+              p = $rb_minus(p, 1);
+            } else if ($eqeqeq(234, $ret_or_1)) {
               
-              line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
-              if ($truthy(self['$version?'](18, 19, 20))) {
-                line = line.$gsub(/\r.*$/, "".$freeze())};
-              if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
-                
-                self.herebody_s = self.te;
-                p = $rb_minus(current_literal.$heredoc_e(), 1);
-                self.cs = self.$pop_literal();
-                
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;
-              } else {
-                
-                current_literal.$infer_indent_level(line);
-                self.herebody_s = self.te;
-              };
-            } else {
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
-                
-                self.cs = self.$pop_literal();
-                
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;};
-              if ($truthy(self.herebody_s)) {
-                
-                p = $rb_minus(self.herebody_s, 1);
-                self.herebody_s = nil;};
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_87 = current_literal['$words?']()))) {
-              return self['$eof_codepoint?'](self.source_pts['$[]'](p))['$!']()
-            } else {
-              return $ret_or_87
-            }; return nil; })())) {
-              current_literal.$extend_space(self.ts, self.te)
-            } else {
+              p = $rb_minus(p, 1);
               
-              current_literal.$extend_string(self.$tok(), self.ts, self.te);
-              current_literal.$flush_string();
-            };;;}
-            else if ((196)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            if (self.te['$=='](pe)) {
-              self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))};
-            if ($truthy(current_literal['$heredoc?']())) {
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(21, $ret_or_1)) {
               
-              line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
-              if ($truthy(self['$version?'](18, 19, 20))) {
-                line = line.$gsub(/\r.*$/, "".$freeze())};
-              if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
-                
-                self.herebody_s = self.te;
-                p = $rb_minus(current_literal.$heredoc_e(), 1);
-                self.cs = self.$pop_literal();
-                
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;
-              } else {
-                
-                current_literal.$infer_indent_level(line);
-                self.herebody_s = self.te;
-              };
-            } else {
               
-              if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
-                
-                self.cs = self.$pop_literal();
-                
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;};
-              if ($truthy(self.herebody_s)) {
-                
-                p = $rb_minus(self.herebody_s, 1);
-                self.herebody_s = nil;};
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_88 = current_literal['$words?']()))) {
-              return self['$eof_codepoint?'](self.source_pts['$[]'](p))['$!']()
-            } else {
-              return $ret_or_88
-            }; return nil; })())) {
-              current_literal.$extend_space(self.ts, self.te)
-            } else {
+              p = $rb_minus(self.te, 1);;
               
-              current_literal.$extend_string(self.$tok(), self.ts, self.te);
-              current_literal.$flush_string();
-            };;;}
-            else if ((204)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            if (self.te['$=='](pe)) {
-              self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))};
-            if ($truthy(current_literal['$heredoc?']())) {
+              p = $rb_minus(p, 1);
               
-              line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
-              if ($truthy(self['$version?'](18, 19, 20))) {
-                line = line.$gsub(/\r.*$/, "".$freeze())};
-              if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
-                
-                self.herebody_s = self.te;
-                p = $rb_minus(current_literal.$heredoc_e(), 1);
-                self.cs = self.$pop_literal();
-                
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;
-              } else {
-                
-                current_literal.$infer_indent_level(line);
-                self.herebody_s = self.te;
-              };
-            } else {
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(241, $ret_or_1)) {
               
-              if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
-                
-                self.cs = self.$pop_literal();
-                
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;};
-              if ($truthy(self.herebody_s)) {
-                
-                p = $rb_minus(self.herebody_s, 1);
-                self.herebody_s = nil;};
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_89 = current_literal['$words?']()))) {
-              return self['$eof_codepoint?'](self.source_pts['$[]'](p))['$!']()
-            } else {
-              return $ret_or_89
-            }; return nil; })())) {
-              current_literal.$extend_space(self.ts, self.te)
-            } else {
+              self.te = $rb_plus(p, 1);
               
-              current_literal.$extend_string(self.$tok(), self.ts, self.te);
-              current_literal.$flush_string();
-            };;;}
-            else if ((275)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;;}
-            else if ((266)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(tm, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;;}
-            else if ((258)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;;}
-            else if ((358)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            escape = $hash2([" ", "\r", "\n", "\t", "\v", "\f"], {" ": "\\s", "\r": "\\r", "\n": "\\n", "\t": "\\t", "\v": "\\v", "\f": "\\f"})['$[]'](self.source_buffer.$slice($rb_plus(self.ts, 1)));
-            self.$diagnostic("warning", "invalid_escape_use", $hash2(["escape"], {"escape": escape}), self.$range());
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;;}
-            else if ((333)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            followed_by_nl = $rb_minus(self.te, 1)['$=='](self.newline_s);
-            nl_emitted = false;
-            dots_te = (function() {if ($truthy(followed_by_nl)) {
-              return $rb_minus(self.te, 1)
-            } else {
-              return self.te
-            }; return nil; })();
-            if ($truthy($rb_ge(self.version, 30))) {
-              if ($truthy((function() {if ($truthy(($ret_or_90 = self.lambda_stack['$any?']()))) {
-                return $rb_plus(self.lambda_stack.$last(), 1)['$=='](self.paren_nest)
-              } else {
-                return $ret_or_90
-              }; return nil; })())) {
-                self.$emit("tDOT3", "...".$freeze(), self.ts, dots_te)
-              } else {
-                
-                self.$emit("tBDOT3", "...".$freeze(), self.ts, dots_te);
-                if ($truthy((function() {if ($truthy(($ret_or_91 = (function() {if ($truthy(($ret_or_92 = $rb_ge(self.version, 31)))) {
-                  return followed_by_nl
-                } else {
-                  return $ret_or_92
-                }; return nil; })()))) {
-                  return self.context.$in_argdef()
-                } else {
-                  return $ret_or_91
-                }; return nil; })())) {
-                  
-                  self.$emit("tNL", $rb_minus(self.te, 1), self.te);
-                  nl_emitted = true;};
-              }
-            } else if ($truthy($rb_ge(self.version, 27))) {
-              self.$emit("tBDOT3", "...".$freeze(), self.ts, dots_te)
-            } else {
-              self.$emit("tDOT3", "...".$freeze(), self.ts, dots_te)
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_93 = followed_by_nl))) {
-              return nl_emitted['$!']()
-            } else {
-              return $ret_or_93
-            }; return nil; })())) {
-              p = $rb_minus(p, 1)};
-            self.cs = 563;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((321)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            self.cs_before_block_comment = self.cs;
-            
-            self.cs = 186;
-            _goto_level = _again;
-            continue;;;;;}
-            else if ((443)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            if (self.paren_nest['$=='](0)) {
-              self.$diagnostic("warning", "triple_dot_at_eol", nil, self.$range(self.ts, $rb_minus(self.te, 1)))};
-            self.$emit("tDOT3", "...".$freeze(), self.ts, $rb_minus(self.te, 1));
-            p = $rb_minus(p, 1);
-            self.cs = 563;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((520)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit_comment(self.eq_begin_s, self.te);
-            
-            self.cs = self.cs_before_block_comment;
-            _goto_level = _again;
-            continue;;;;;}
-            else if ((517)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.te = $rb_plus(p, 1);;}
-            else if ((107)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            self.eq_begin_s = self.ts;
-            
-            self.cs = 998;
-            _goto_level = _again;
-            continue;;;;;}
-            else if ((3)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(pe, 3);;;}
-            else if ((465)['$===']($case)) {
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$13 = function(chars){var self = $$13.$$s == null ? this : $$13.$$s;
-
+              self.$emit_table($$('PUNCTUATION'));
+              self.cs = 494;
               
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(240, $ret_or_1)) {
               
-              if (chars == null) {
-                chars = nil;
-              };
-              return self.$emit("tRATIONAL", self.$Rational(chars));}, $$13.$$s = self, $$13.$$arity = 1, $$13));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            digits = self.$tok(self.num_digits_s, self.num_suffix_s);
-            if ($truthy(digits['$end_with?']("_".$freeze()))) {
-              self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
-            } else if ($truthy((function() {if ($truthy(($ret_or_94 = (function() {if ($truthy(($ret_or_95 = digits['$empty?']()))) {
-              return self.num_base['$=='](8)
-            } else {
-              return $ret_or_95
-            }; return nil; })()))) {
-              return self['$version?'](18)
-            } else {
-              return $ret_or_94
-            }; return nil; })())) {
-              digits = "0".$freeze()
-            } else if ($truthy(digits['$empty?']())) {
-              self.$diagnostic("error", "empty_numeric")
-            } else if ($truthy((function() {if ($truthy(($ret_or_96 = self.num_base['$=='](8)))) {
-              
-              return (invalid_idx = digits.$index(/[89]/));
-            } else {
-              return $ret_or_96
-            }; return nil; })())) {
+              self.te = $rb_plus(p, 1);
               
-              invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
-              self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));};
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              p = $rb_minus(p, 1);
               
-              self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits.$to_i(self.num_base))
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((463)['$===']($case)) {
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$14 = function(chars){var self = $$14.$$s == null ? this : $$14.$$s;
-
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(239, $ret_or_1)) {
               
+              self.te = $rb_plus(p, 1);
               
-              if (chars == null) {
-                chars = nil;
-              };
-              return self.$emit("tIMAGINARY", self.$Complex(0, chars));}, $$14.$$s = self, $$14.$$arity = 1, $$14));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            digits = self.$tok(self.num_digits_s, self.num_suffix_s);
-            if ($truthy(digits['$end_with?']("_".$freeze()))) {
-              self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
-            } else if ($truthy((function() {if ($truthy(($ret_or_97 = (function() {if ($truthy(($ret_or_98 = digits['$empty?']()))) {
-              return self.num_base['$=='](8)
-            } else {
-              return $ret_or_98
-            }; return nil; })()))) {
-              return self['$version?'](18)
-            } else {
-              return $ret_or_97
-            }; return nil; })())) {
-              digits = "0".$freeze()
-            } else if ($truthy(digits['$empty?']())) {
-              self.$diagnostic("error", "empty_numeric")
-            } else if ($truthy((function() {if ($truthy(($ret_or_99 = self.num_base['$=='](8)))) {
-              
-              return (invalid_idx = digits.$index(/[89]/));
-            } else {
-              return $ret_or_99
-            }; return nil; })())) {
+              p = $rb_minus(p, 1);
               
-              invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
-              self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));};
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(251, $ret_or_1)) {
               
-              self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits.$to_i(self.num_base))
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((468)['$===']($case)) {
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$15 = function(chars){var self = $$15.$$s == null ? this : $$15.$$s;
-
+              self.te = p;
+              p = $rb_minus(p, 1);
               
+              self.$emit("tCONSTANT");
+              self.cs = self.$arg_or_cmdarg(cmd_state);
               
-              if (chars == null) {
-                chars = nil;
-              };
-              return self.$emit("tIMAGINARY", self.$Complex(0, self.$Rational(chars)));}, $$15.$$s = self, $$15.$$arity = 1, $$15));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            digits = self.$tok(self.num_digits_s, self.num_suffix_s);
-            if ($truthy(digits['$end_with?']("_".$freeze()))) {
-              self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
-            } else if ($truthy((function() {if ($truthy(($ret_or_100 = (function() {if ($truthy(($ret_or_101 = digits['$empty?']()))) {
-              return self.num_base['$=='](8)
-            } else {
-              return $ret_or_101
-            }; return nil; })()))) {
-              return self['$version?'](18)
-            } else {
-              return $ret_or_100
-            }; return nil; })())) {
-              digits = "0".$freeze()
-            } else if ($truthy(digits['$empty?']())) {
-              self.$diagnostic("error", "empty_numeric")
-            } else if ($truthy((function() {if ($truthy(($ret_or_102 = self.num_base['$=='](8)))) {
-              
-              return (invalid_idx = digits.$index(/[89]/));
-            } else {
-              return $ret_or_102
-            }; return nil; })())) {
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(242, $ret_or_1)) {
               
-              invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
-              self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));};
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits.$to_i(self.num_base))
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((466)['$===']($case)) {
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$16 = function(chars){var self = $$16.$$s == null ? this : $$16.$$s;
-              if (self.ts == null) self.ts = nil;
-              if (self.te == null) self.te = nil;
-
+              self.$emit("tIDENTIFIER");
+              self.cs = self.$arg_or_cmdarg(cmd_state);
               
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(247, $ret_or_1)) {
               
-              if (chars == null) {
-                chars = nil;
-              };
-              self.$emit("tINTEGER", chars, self.ts, $rb_minus(self.te, 2));
-              return (p = $rb_minus(p, 2));}, $$16.$$s = self, $$16.$$arity = 1, $$16));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            digits = self.$tok(self.num_digits_s, self.num_suffix_s);
-            if ($truthy(digits['$end_with?']("_".$freeze()))) {
-              self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
-            } else if ($truthy((function() {if ($truthy(($ret_or_103 = (function() {if ($truthy(($ret_or_104 = digits['$empty?']()))) {
-              return self.num_base['$=='](8)
-            } else {
-              return $ret_or_104
-            }; return nil; })()))) {
-              return self['$version?'](18)
-            } else {
-              return $ret_or_103
-            }; return nil; })())) {
-              digits = "0".$freeze()
-            } else if ($truthy(digits['$empty?']())) {
-              self.$diagnostic("error", "empty_numeric")
-            } else if ($truthy((function() {if ($truthy(($ret_or_105 = self.num_base['$=='](8)))) {
-              
-              return (invalid_idx = digits.$index(/[89]/));
-            } else {
-              return $ret_or_105
-            }; return nil; })())) {
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
-              self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));};
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              self.$emit_table($$('PUNCTUATION'));
+              self.cs = 494;
               
-              self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits.$to_i(self.num_base))
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((464)['$===']($case)) {
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$17 = function(chars){var self = $$17.$$s == null ? this : $$17.$$s;
-              if (self.ts == null) self.ts = nil;
-              if (self.te == null) self.te = nil;
-
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(245, $ret_or_1)) {
               
+              self.te = p;
+              p = $rb_minus(p, 1);
+            } else if ($eqeqeq(250, $ret_or_1)) {
               
-              if (chars == null) {
-                chars = nil;
-              };
-              self.$emit("tINTEGER", chars, self.ts, $rb_minus(self.te, 2));
-              return (p = $rb_minus(p, 2));}, $$17.$$s = self, $$17.$$arity = 1, $$17));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            digits = self.$tok(self.num_digits_s, self.num_suffix_s);
-            if ($truthy(digits['$end_with?']("_".$freeze()))) {
-              self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
-            } else if ($truthy((function() {if ($truthy(($ret_or_106 = (function() {if ($truthy(($ret_or_107 = digits['$empty?']()))) {
-              return self.num_base['$=='](8)
-            } else {
-              return $ret_or_107
-            }; return nil; })()))) {
-              return self['$version?'](18)
-            } else {
-              return $ret_or_106
-            }; return nil; })())) {
-              digits = "0".$freeze()
-            } else if ($truthy(digits['$empty?']())) {
-              self.$diagnostic("error", "empty_numeric")
-            } else if ($truthy((function() {if ($truthy(($ret_or_108 = self.num_base['$=='](8)))) {
-              
-              return (invalid_idx = digits.$index(/[89]/));
-            } else {
-              return $ret_or_108
-            }; return nil; })())) {
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
-              self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));};
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              p = $rb_minus(p, 1);
               
-              self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits.$to_i(self.num_base))
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((467)['$===']($case)) {
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$18 = function(chars){var self = $$18.$$s == null ? this : $$18.$$s;
-              if (self.ts == null) self.ts = nil;
-              if (self.te == null) self.te = nil;
-
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(274, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
               
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(257, $ret_or_1)) {
               
-              if (chars == null) {
-                chars = nil;
+              self.te = $rb_plus(p, 1);
+              
+              if ($eqeq(self.$tok(tm, $rb_plus(tm, 1)), "/".$freeze())) {
+                if ($truthy($rb_lt(self.version, 30))) {
+                  self.$diagnostic("warning", "ambiguous_literal", nil, self.$range(tm, $rb_plus(tm, 1)))
+                } else {
+                  self.$diagnostic("warning", "ambiguous_regexp", nil, self.$range(tm, $rb_plus(tm, 1)))
+                }
               };
-              self.$emit("tINTEGER", chars, self.ts, $rb_minus(self.te, 6));
-              return (p = $rb_minus(p, 6));}, $$18.$$s = self, $$18.$$arity = 1, $$18));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            digits = self.$tok(self.num_digits_s, self.num_suffix_s);
-            if ($truthy(digits['$end_with?']("_".$freeze()))) {
-              self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
-            } else if ($truthy((function() {if ($truthy(($ret_or_109 = (function() {if ($truthy(($ret_or_110 = digits['$empty?']()))) {
-              return self.num_base['$=='](8)
-            } else {
-              return $ret_or_110
-            }; return nil; })()))) {
-              return self['$version?'](18)
-            } else {
-              return $ret_or_109
-            }; return nil; })())) {
-              digits = "0".$freeze()
-            } else if ($truthy(digits['$empty?']())) {
-              self.$diagnostic("error", "empty_numeric")
-            } else if ($truthy((function() {if ($truthy(($ret_or_111 = self.num_base['$=='](8)))) {
-              
-              return (invalid_idx = digits.$index(/[89]/));
-            } else {
-              return $ret_or_111
-            }; return nil; })())) {
+              p = $rb_minus(tm, 1);
               
-              invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
-              self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));};
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              self.cs = 563;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(263, $ret_or_1)) {
               
-              self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits.$to_i(self.num_base))
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((456)['$===']($case)) {
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$19 = function(chars){var self = $$19.$$s == null ? this : $$19.$$s;
-
+              self.te = $rb_plus(p, 1);
               
+              p = $rb_minus(p, 1);
+              p = $rb_minus(p, 1);
               
-              if (chars == null) {
-                chars = nil;
-              };
-              return self.$emit("tIMAGINARY", self.$Complex(0, self.$Float(chars)));}, $$19.$$s = self, $$19.$$arity = 1, $$19));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            digits = self.$tok(self.ts, self.num_suffix_s);
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              self.cs = 563;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(25, $ret_or_1)) {
               
-              self.$emit("tFLOAT", self.$Float(digits), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits)
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((457)['$===']($case)) {
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$20 = function(chars){var self = $$20.$$s == null ? this : $$20.$$s;
-              if (self.ts == null) self.ts = nil;
-              if (self.te == null) self.te = nil;
-
+              self.te = $rb_plus(p, 1);
               
+              p = $rb_minus(self.ts, 1);
               
-              if (chars == null) {
-                chars = nil;
-              };
-              self.$emit("tFLOAT", self.$Float(chars), self.ts, $rb_minus(self.te, 2));
-              return (p = $rb_minus(p, 2));}, $$20.$$s = self, $$20.$$arity = 1, $$20));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            digits = self.$tok(self.ts, self.num_suffix_s);
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              self.cs = 563;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(265, $ret_or_1)) {
               
-              self.$emit("tFLOAT", self.$Float(digits), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits)
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((458)['$===']($case)) {
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$21 = function(chars){var self = $$21.$$s == null ? this : $$21.$$s;
-
+              self.te = $rb_plus(p, 1);
               
+              p = $rb_minus(tm, 1);
               
-              if (chars == null) {
-                chars = nil;
-              };
-              return self.$emit("tRATIONAL", self.$Rational(chars));}, $$21.$$s = self, $$21.$$arity = 1, $$21));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            digits = self.$tok(self.ts, self.num_suffix_s);
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(40, $ret_or_1)) {
               
-              self.$emit("tFLOAT", self.$Float(digits), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits)
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((460)['$===']($case)) {
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$22 = function(chars){var self = $$22.$$s == null ? this : $$22.$$s;
-
+              self.te = $rb_plus(p, 1);
               
+              p = $rb_minus(self.ts, 1);
               
-              if (chars == null) {
-                chars = nil;
-              };
-              return self.$emit("tIMAGINARY", self.$Complex(0, self.$Rational(chars)));}, $$22.$$s = self, $$22.$$arity = 1, $$22));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            digits = self.$tok(self.ts, self.num_suffix_s);
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(252, $ret_or_1)) {
               
-              self.$emit("tFLOAT", self.$Float(digits), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits)
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((459)['$===']($case)) {
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$23 = function(chars){var self = $$23.$$s == null ? this : $$23.$$s;
-              if (self.ts == null) self.ts = nil;
-              if (self.te == null) self.te = nil;
-
+              self.te = $rb_plus(p, 1);
               
+              p = $rb_minus(p, 1);
               
-              if (chars == null) {
-                chars = nil;
-              };
-              self.$emit("tFLOAT", self.$Float(chars), self.ts, $rb_minus(self.te, 6));
-              return (p = $rb_minus(p, 6));}, $$23.$$s = self, $$23.$$arity = 1, $$23));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            digits = self.$tok(self.ts, self.num_suffix_s);
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              self.cs = 563;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(253, $ret_or_1)) {
               
-              self.$emit("tFLOAT", self.$Float(digits), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits)
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((137)['$===']($case)) {
-            
-            self.escape = "";
-            codepoints = self.$tok($rb_plus(self.escape_s, 2), $rb_minus(p, 1));
-            codepoint_s = $rb_plus(self.escape_s, 2);
-            if ($truthy($rb_lt(self.version, 24))) {
+              self.te = $rb_plus(p, 1);
               
-              if ($truthy((function() {if ($truthy(($ret_or_112 = codepoints['$start_with?'](" ")))) {
-                return $ret_or_112
-              } else {
-                return codepoints['$start_with?']("\t")
-              }; return nil; })())) {
-                self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_plus(self.escape_s, 2), $rb_plus(self.escape_s, 3)))};
-              if ($truthy((spaces_p = codepoints.$index(/[ \t]{2}/)))) {
-                self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_plus($rb_plus(codepoint_s, spaces_p), 1), $rb_plus($rb_plus(codepoint_s, spaces_p), 2)))};
-              if ($truthy((function() {if ($truthy(($ret_or_113 = codepoints['$end_with?'](" ")))) {
-                return $ret_or_113
-              } else {
-                return codepoints['$end_with?']("\t")
-              }; return nil; })())) {
-                self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(p, 1), p))};};
-            (function(){var $brk = Opal.new_brk(); try {return $send(codepoints.$scan(/([0-9a-fA-F]+)|([ \t]+)/), 'each', [], ($$24 = function($mlhs_tmp1){var self = $$24.$$s == null ? this : $$24.$$s, $c, $d, codepoint_str = nil, spaces = nil, codepoint = nil;
-              if (self.escape == null) self.escape = nil;
-
+              p = $rb_minus(p, 1);
               
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(264, $ret_or_1)) {
               
-              if ($mlhs_tmp1 == null) {
-                $mlhs_tmp1 = nil;
-              };
-              $d = $mlhs_tmp1, $c = Opal.to_ary($d), (codepoint_str = ($c[0] == null ? nil : $c[0])), (spaces = ($c[1] == null ? nil : $c[1])), $d;
-              if ($truthy(spaces)) {
-                return (codepoint_s = $rb_plus(codepoint_s, spaces.$length()))
-              } else {
-                
-                codepoint = codepoint_str.$to_i(16);
-                if ($truthy($rb_ge(codepoint, 1114112))) {
-                  
-                  self.$diagnostic("error", "unicode_point_too_large", nil, self.$range(codepoint_s, $rb_plus(codepoint_s, codepoint_str.$length())));
-                  
-                  Opal.brk(nil, $brk);};
-                self.escape = $rb_plus(self.escape, codepoint.$chr($$$($$($nesting, 'Encoding'), 'UTF_8')));
-                return (codepoint_s = $rb_plus(codepoint_s, codepoint_str.$length()));
-              };}, $$24.$$s = self, $$24.$$brk = $brk, $$24.$$arity = 1, $$24.$$has_top_level_mlhs_arg = true, $$24))
-            } catch (err) { if (err === $brk) { return err.$v } else { throw err } }})();;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_114 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_114
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
-              } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_115 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_115
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_116 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_116
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_117 = (function() {if ($truthy(($ret_or_118 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_118
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_117
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_119 = self.escape))) {
-                return $ret_or_119
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((168)['$===']($case)) {
-            
-            self.escape = "";
-            codepoints = self.$tok($rb_plus(self.escape_s, 2), $rb_minus(p, 1));
-            codepoint_s = $rb_plus(self.escape_s, 2);
-            if ($truthy($rb_lt(self.version, 24))) {
-              
-              if ($truthy((function() {if ($truthy(($ret_or_120 = codepoints['$start_with?'](" ")))) {
-                return $ret_or_120
-              } else {
-                return codepoints['$start_with?']("\t")
-              }; return nil; })())) {
-                self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_plus(self.escape_s, 2), $rb_plus(self.escape_s, 3)))};
-              if ($truthy((spaces_p = codepoints.$index(/[ \t]{2}/)))) {
-                self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_plus($rb_plus(codepoint_s, spaces_p), 1), $rb_plus($rb_plus(codepoint_s, spaces_p), 2)))};
-              if ($truthy((function() {if ($truthy(($ret_or_121 = codepoints['$end_with?'](" ")))) {
-                return $ret_or_121
-              } else {
-                return codepoints['$end_with?']("\t")
-              }; return nil; })())) {
-                self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(p, 1), p))};};
-            (function(){var $brk = Opal.new_brk(); try {return $send(codepoints.$scan(/([0-9a-fA-F]+)|([ \t]+)/), 'each', [], ($$25 = function($mlhs_tmp1){var self = $$25.$$s == null ? this : $$25.$$s, $c, $d, codepoint_str = nil, spaces = nil, codepoint = nil;
-              if (self.escape == null) self.escape = nil;
-
+              self.te = p;
+              p = $rb_minus(p, 1);
               
+              p = $rb_minus(p, 1);
               
-              if ($mlhs_tmp1 == null) {
-                $mlhs_tmp1 = nil;
-              };
-              $d = $mlhs_tmp1, $c = Opal.to_ary($d), (codepoint_str = ($c[0] == null ? nil : $c[0])), (spaces = ($c[1] == null ? nil : $c[1])), $d;
-              if ($truthy(spaces)) {
-                return (codepoint_s = $rb_plus(codepoint_s, spaces.$length()))
-              } else {
-                
-                codepoint = codepoint_str.$to_i(16);
-                if ($truthy($rb_ge(codepoint, 1114112))) {
-                  
-                  self.$diagnostic("error", "unicode_point_too_large", nil, self.$range(codepoint_s, $rb_plus(codepoint_s, codepoint_str.$length())));
-                  
-                  Opal.brk(nil, $brk);};
-                self.escape = $rb_plus(self.escape, codepoint.$chr($$$($$($nesting, 'Encoding'), 'UTF_8')));
-                return (codepoint_s = $rb_plus(codepoint_s, codepoint_str.$length()));
-              };}, $$25.$$s = self, $$25.$$brk = $brk, $$25.$$arity = 1, $$25.$$has_top_level_mlhs_arg = true, $$25))
-            } catch (err) { if (err === $brk) { return err.$v } else { throw err } }})();;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_122 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_122
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
-              } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_123 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_123
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_124 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_124
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_125 = (function() {if ($truthy(($ret_or_126 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_126
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_125
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_127 = self.escape))) {
-                return $ret_or_127
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((382)['$===']($case)) {
-            
-            self.escape = "";
-            codepoints = self.$tok($rb_plus(self.escape_s, 2), $rb_minus(p, 1));
-            codepoint_s = $rb_plus(self.escape_s, 2);
-            if ($truthy($rb_lt(self.version, 24))) {
-              
-              if ($truthy((function() {if ($truthy(($ret_or_128 = codepoints['$start_with?'](" ")))) {
-                return $ret_or_128
-              } else {
-                return codepoints['$start_with?']("\t")
-              }; return nil; })())) {
-                self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_plus(self.escape_s, 2), $rb_plus(self.escape_s, 3)))};
-              if ($truthy((spaces_p = codepoints.$index(/[ \t]{2}/)))) {
-                self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_plus($rb_plus(codepoint_s, spaces_p), 1), $rb_plus($rb_plus(codepoint_s, spaces_p), 2)))};
-              if ($truthy((function() {if ($truthy(($ret_or_129 = codepoints['$end_with?'](" ")))) {
-                return $ret_or_129
-              } else {
-                return codepoints['$end_with?']("\t")
-              }; return nil; })())) {
-                self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(p, 1), p))};};
-            (function(){var $brk = Opal.new_brk(); try {return $send(codepoints.$scan(/([0-9a-fA-F]+)|([ \t]+)/), 'each', [], ($$26 = function($mlhs_tmp1){var self = $$26.$$s == null ? this : $$26.$$s, $c, $d, codepoint_str = nil, spaces = nil, codepoint = nil;
-              if (self.escape == null) self.escape = nil;
-
+              self.cs = 563;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(260, $ret_or_1)) {
               
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              if ($mlhs_tmp1 == null) {
-                $mlhs_tmp1 = nil;
-              };
-              $d = $mlhs_tmp1, $c = Opal.to_ary($d), (codepoint_str = ($c[0] == null ? nil : $c[0])), (spaces = ($c[1] == null ? nil : $c[1])), $d;
-              if ($truthy(spaces)) {
-                return (codepoint_s = $rb_plus(codepoint_s, spaces.$length()))
-              } else {
-                
-                codepoint = codepoint_str.$to_i(16);
-                if ($truthy($rb_ge(codepoint, 1114112))) {
-                  
-                  self.$diagnostic("error", "unicode_point_too_large", nil, self.$range(codepoint_s, $rb_plus(codepoint_s, codepoint_str.$length())));
-                  
-                  Opal.brk(nil, $brk);};
-                self.escape = $rb_plus(self.escape, codepoint.$chr($$$($$($nesting, 'Encoding'), 'UTF_8')));
-                return (codepoint_s = $rb_plus(codepoint_s, codepoint_str.$length()));
-              };}, $$26.$$s = self, $$26.$$brk = $brk, $$26.$$arity = 1, $$26.$$has_top_level_mlhs_arg = true, $$26))
-            } catch (err) { if (err === $brk) { return err.$v } else { throw err } }})();;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_130 = self.escape))) {
-              return $ret_or_130
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((118)['$===']($case)) {
-            
-            codepoint = self.source_pts['$[]']($rb_minus(p, 1));
-            if ($truthy((function() {if ($truthy(($ret_or_131 = $rb_ge(self.version, 30)))) {
+              self.$diagnostic("warning", "ambiguous_prefix", $hash2(["prefix"], {"prefix": self.$tok(tm, self.te)}), self.$range(tm, self.te));
+              p = $rb_minus(tm, 1);
+              
+              self.cs = 563;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(262, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              self.cs = 563;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(256, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              if ($truthy(($ret_or_132 = codepoint['$=='](117)))) {
-                return $ret_or_132
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(255, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+            } else if ($eqeqeq(273, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              self.cs = 563;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(26, $ret_or_1)) {
+              
+              
+              p = $rb_minus(self.te, 1);;
+            } else if ($eqeqeq(42, $ret_or_1)) {
+              
+              
+              p = $rb_minus(self.te, 1);;
+              
+              p = $rb_minus(p, 1);
+              
+              self.cs = 563;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(24, $ret_or_1)) {
+              
+              if ($eqeqeq(72, ($ret_or_2 = self.act))) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                if ($eqeq(self.$tok(tm, $rb_plus(tm, 1)), "/".$freeze())) {
+                  if ($truthy($rb_lt(self.version, 30))) {
+                    self.$diagnostic("warning", "ambiguous_literal", nil, self.$range(tm, $rb_plus(tm, 1)))
+                  } else {
+                    self.$diagnostic("warning", "ambiguous_regexp", nil, self.$range(tm, $rb_plus(tm, 1)))
+                  }
+                };
+                p = $rb_minus(tm, 1);
+                
+                self.cs = 563;
+                _goto_level = _again;
+                continue;;;
+              } else if ($eqeqeq(73, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$diagnostic("warning", "ambiguous_prefix", $hash2(["prefix"], {"prefix": self.$tok(tm, self.te)}), self.$range(tm, self.te));
+                p = $rb_minus(tm, 1);
+                
+                self.cs = 563;
+                _goto_level = _again;
+                continue;;;
+              } else if ($eqeqeq(78, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                p = $rb_minus(self.ts, 1);
+                
+                self.cs = 810;
+                _goto_level = _again;
+                continue;;;
               } else {
-                return codepoint['$=='](85)
+                
+                
+                p = $rb_minus(self.te, 1);;
               };
-            } else {
-              return $ret_or_131
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};
-            if ($truthy((self.escape = $$($nesting, 'ESCAPES')['$[]'](codepoint))['$nil?']())) {
-              self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_133 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_133
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
-              } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_134 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_134
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_135 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_135
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_136 = (function() {if ($truthy(($ret_or_137 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_137
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_136
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_138 = self.escape))) {
-                return $ret_or_138
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((149)['$===']($case)) {
-            
-            codepoint = self.source_pts['$[]']($rb_minus(p, 1));
-            if ($truthy((function() {if ($truthy(($ret_or_139 = $rb_ge(self.version, 30)))) {
+            } else if ($eqeqeq(44, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 494;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(278, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(279, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 494;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(45, $ret_or_1)) {
+              
+              
+              p = $rb_minus(self.te, 1);;
               
-              if ($truthy(($ret_or_140 = codepoint['$=='](117)))) {
-                return $ret_or_140
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 494;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(43, $ret_or_1)) {
+              
+              if ($eqeqeq(85, ($ret_or_2 = self.act))) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                if ($truthy(self.cond['$active?']())) {
+                  self.$emit("kDO_COND", "do".$freeze(), $rb_minus(self.te, 2), self.te)
+                } else {
+                  self.$emit("kDO", "do".$freeze(), $rb_minus(self.te, 2), self.te)
+                };
+                self.cs = 802;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(86, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                p = $rb_minus(self.ts, 1);
+                
+                self.cs = 494;
+                _goto_level = _again;
+                continue;;;
               } else {
-                return codepoint['$=='](85)
+                nil
               };
-            } else {
-              return $ret_or_139
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};
-            if ($truthy((self.escape = $$($nesting, 'ESCAPES')['$[]'](codepoint))['$nil?']())) {
-              self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_141 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_141
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
-              } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_142 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_142
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_143 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_143
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_144 = (function() {if ($truthy(($ret_or_145 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_145
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_144
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_146 = self.escape))) {
-                return $ret_or_146
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((363)['$===']($case)) {
-            
-            codepoint = self.source_pts['$[]']($rb_minus(p, 1));
-            if ($truthy((function() {if ($truthy(($ret_or_147 = $rb_ge(self.version, 30)))) {
+            } else if ($eqeqeq(289, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit_do(true);
+              self.cs = 802;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(282, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(283, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(284, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+            } else if ($eqeqeq(287, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(293, $ret_or_1)) {
               
-              if ($truthy(($ret_or_148 = codepoint['$=='](117)))) {
-                return $ret_or_148
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              self.cs = 563;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(292, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(301, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 563;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(295, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+            } else if ($eqeqeq(299, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              self.cs = 563;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(294, $ret_or_1)) {
+              
+              if ($eqeqeq(93, ($ret_or_2 = self.act))) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('KEYWORDS'));
+                self.cs = 563;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(94, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                p = $rb_minus(self.ts, 1);
+                
+                self.cs = 563;
+                _goto_level = _again;
+                continue;;;
               } else {
-                return codepoint['$=='](85)
+                nil
               };
-            } else {
-              return $ret_or_147
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};
-            if ($truthy((self.escape = $$($nesting, 'ESCAPES')['$[]'](codepoint))['$nil?']())) {
-              self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_149 = self.escape))) {
-              return $ret_or_149
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((121)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "invalid_escape");;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_150 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+            } else if ($eqeqeq(57, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit("tUNARY_NUM", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
+              p = $rb_minus(p, 1);
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(334, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              type = (delimiter = self.$tok()['$[]'](0).$chr());
+              p = $rb_minus(p, 1);
+              
+              self.cs = self.$push_literal(type, delimiter, self.ts);
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(326, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              $b = [self.source_buffer.$slice(self.ts).$chr(), self.$tok()['$[]'](-1).$chr()], (type = $b[0]), (delimiter = $b[1]), $b;
+              
+              self.cs = self.$push_literal(type, delimiter, self.ts);
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(55, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              $b = [self.$tok()['$[]']($range(0, -2, false)), self.$tok()['$[]'](-1).$chr()], (type = $b[0]), (delimiter = $b[1]), $b;
+              
+              self.cs = self.$push_literal(type, delimiter, self.ts);
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(347, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              p = $rb_minus(p, 1);
+              self.$emit("tSYMBEG", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
+              
+              self.cs = 352;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(335, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              $b = [self.$tok(), self.$tok()['$[]'](-1).$chr()], (type = $b[0]), (delimiter = $b[1]), $b;
+              
+              self.cs = self.$push_literal(type, delimiter, self.ts);
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(346, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1), $rb_plus(self.ts, 2)));
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(69, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1)), self.ts);
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(357, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              escape = $hash2([" ", "\r", "\n", "\t", "\v", "\f"], {" ": "\\s", "\r": "\\r", "\n": "\\n", "\t": "\\t", "\v": "\\v", "\f": "\\f"})['$[]'](self.source_buffer.$slice($rb_plus(self.ts, 1)));
+              self.$diagnostic("warning", "invalid_escape_use", $hash2(["escape"], {"escape": escape}), self.$range());
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(356, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$diagnostic("fatal", "incomplete_escape", nil, self.$range(self.ts, $rb_plus(self.ts, 1)));;
+            } else if ($eqeqeq(336, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit_table($$('PUNCTUATION_BEGIN'));
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(52, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              if ($truthy(self['$version?'](18))) {
+                
+                ident = self.$tok(self.ts, $rb_minus(self.te, 2));
+                self.$emit(($truthy(self.source_buffer.$slice(self.ts)['$=~'](/[A-Z]/)) ? ("tCONSTANT") : ("tIDENTIFIER")), ident, self.ts, $rb_minus(self.te, 2));
+                p = $rb_minus(p, 1);
+                if (($not(self.static_env['$nil?']()) && ($truthy(self.static_env['$declared?'](ident))))) {
+                  self.cs = 810
+                } else {
+                  self.cs = self.$arg_or_cmdarg(cmd_state)
+                };
               } else {
-                return $ret_or_150
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                
+                self.$emit("tLABEL", self.$tok(self.ts, $rb_minus(self.te, 2)), self.ts, $rb_minus(self.te, 1));
+                self.cs = 795;
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(49, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit("tIDENTIFIER", ident_tok, ident_ts, ident_te);
+              p = $rb_minus(ident_te, 1);
+              if ((($not(self.static_env['$nil?']()) && ($truthy(self.static_env['$declared?'](ident_tok)))) && ($truthy($rb_lt(self.version, 25))))) {
+                self.cs = 465
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_151 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_151
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_152 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_152
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_153 = (function() {if ($truthy(($ret_or_154 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_154
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_153
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_155 = self.escape))) {
-                return $ret_or_155
+                self.cs = 525
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(320, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              self.cs_before_block_comment = self.cs;
+              
+              self.cs = 186;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(56, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(304, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(330, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tUNARY_NUM", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
+              p = $rb_minus(p, 1);
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(329, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tSTAR", "*".$freeze());
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(325, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$diagnostic("fatal", "string_eof", nil, self.$range(self.ts, $rb_plus(self.ts, 1)));;
+            } else if ($eqeqeq(354, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$diagnostic("error", "unterminated_heredoc_id", nil, self.$range(self.ts, $rb_plus(self.ts, 1)));;
+            } else if ($eqeqeq(337, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1)), self.ts);
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(350, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              if ($truthy($rb_ge(self.version, 27))) {
+                self.$diagnostic("error", diag_msg, $hash2(["name"], {"name": self.$tok(tm, self.te)}), self.$range(tm, self.te))
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((152)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "invalid_escape");;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_156 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                
+                self.$emit("tCOLON", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
+                p = self.ts;
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(355, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$diagnostic("fatal", "incomplete_escape", nil, self.$range(self.ts, $rb_plus(self.ts, 1)));;
+            } else if ($eqeqeq(361, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(327, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit_table($$('PUNCTUATION_BEGIN'));
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(331, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              if ($truthy($rb_ge(self.version, 27))) {
+                self.$emit("tBDOT2")
               } else {
-                return $ret_or_156
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                self.$emit("tDOT2")
+              };
+              self.cs = 563;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(332, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              followed_by_nl = $rb_minus(self.te, 1)['$=='](self.newline_s);
+              nl_emitted = false;
+              dots_te = ($truthy(followed_by_nl) ? ($rb_minus(self.te, 1)) : (self.te));
+              if ($truthy($rb_ge(self.version, 30))) {
+                if (($truthy(self.lambda_stack['$any?']()) && ($eqeq($rb_plus(self.lambda_stack.$last(), 1), self.paren_nest)))) {
+                  self.$emit("tDOT3", "...".$freeze(), self.ts, dots_te)
+                } else {
+                  
+                  self.$emit("tBDOT3", "...".$freeze(), self.ts, dots_te);
+                  if ((($truthy($rb_ge(self.version, 31)) && ($truthy(followed_by_nl))) && ($truthy(self.context.$in_argdef())))) {
+                    
+                    self.$emit("tNL", $rb_minus(self.te, 1), self.te);
+                    nl_emitted = true;
+                  };
+                }
+              } else if ($truthy($rb_ge(self.version, 27))) {
+                self.$emit("tBDOT3", "...".$freeze(), self.ts, dots_te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_157 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_157
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_158 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_158
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_159 = (function() {if ($truthy(($ret_or_160 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_160
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_159
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_161 = self.escape))) {
-                return $ret_or_161
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((366)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "invalid_escape");;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_162 = self.escape))) {
-              return $ret_or_162
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((123)['$===']($case)) {
-            
-            self.escape = "\u007F";;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_163 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_163
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
-              } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_164 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_164
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_165 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_165
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_166 = (function() {if ($truthy(($ret_or_167 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_167
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_166
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_168 = self.escape))) {
-                return $ret_or_168
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((154)['$===']($case)) {
-            
-            self.escape = "\u007F";;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_169 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_169
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
-              } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_170 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_170
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_171 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_171
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_172 = (function() {if ($truthy(($ret_or_173 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_173
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_172
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_174 = self.escape))) {
-                return $ret_or_174
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((368)['$===']($case)) {
-            
-            self.escape = "\u007F";;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_175 = self.escape))) {
-              return $ret_or_175
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((120)['$===']($case)) {
-            
-            self.escape = self.$encode_escape(self.$tok(self.escape_s, p).$to_i(8)['$%'](256));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_176 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_176
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
-              } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_177 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_177
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_178 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_178
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_179 = (function() {if ($truthy(($ret_or_180 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_180
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_179
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_181 = self.escape))) {
-                return $ret_or_181
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((151)['$===']($case)) {
-            
-            self.escape = self.$encode_escape(self.$tok(self.escape_s, p).$to_i(8)['$%'](256));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_182 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_182
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
-              } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_183 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_183
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_184 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_184
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_185 = (function() {if ($truthy(($ret_or_186 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_186
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_185
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_187 = self.escape))) {
-                return $ret_or_187
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((365)['$===']($case)) {
-            
-            self.escape = self.$encode_escape(self.$tok(self.escape_s, p).$to_i(8)['$%'](256));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_188 = self.escape))) {
-              return $ret_or_188
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((140)['$===']($case)) {
-            
-            self.escape = self.$encode_escape(self.$tok($rb_plus(self.escape_s, 1), p).$to_i(16));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_189 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_189
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
-              } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_190 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_190
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_191 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_191
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_192 = (function() {if ($truthy(($ret_or_193 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_193
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_192
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_194 = self.escape))) {
-                return $ret_or_194
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((171)['$===']($case)) {
-            
-            self.escape = self.$encode_escape(self.$tok($rb_plus(self.escape_s, 1), p).$to_i(16));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_195 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_195
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
-              } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_196 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_196
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_197 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_197
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_198 = (function() {if ($truthy(($ret_or_199 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_199
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_198
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_200 = self.escape))) {
-                return $ret_or_200
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((385)['$===']($case)) {
-            
-            self.escape = self.$encode_escape(self.$tok($rb_plus(self.escape_s, 1), p).$to_i(16));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_201 = self.escape))) {
-              return $ret_or_201
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((139)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "invalid_hex_escape", nil, self.$range($rb_minus(self.escape_s, 1), $rb_plus(p, 2)));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_202 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                self.$emit("tDOT3", "...".$freeze(), self.ts, dots_te)
+              };
+              if (($truthy(followed_by_nl) && ($not(nl_emitted)))) {
+                p = $rb_minus(p, 1)
+              };
+              self.cs = 563;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(307, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tIDENTIFIER");
+              if (($not(self.static_env['$nil?']()) && ($truthy(self.static_env['$declared?'](self.$tok()))))) {
+                
+                self.cs = 465;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
               } else {
-                return $ret_or_202
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                
+                self.cs = self.$arg_or_cmdarg(cmd_state);
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              };;
+            } else if ($eqeqeq(317, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+            } else if ($eqeqeq(319, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              self.cs_before_block_comment = self.cs;
+              
+              self.cs = 186;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(322, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(54, $ret_or_1)) {
+              
+              
+              p = $rb_minus(self.te, 1);;
+              
+              self.$diagnostic("fatal", "string_eof", nil, self.$range(self.ts, $rb_plus(self.ts, 1)));;
+            } else if ($eqeqeq(73, $ret_or_1)) {
+              
+              
+              p = $rb_minus(self.te, 1);;
+              
+              self.$diagnostic("error", "unterminated_heredoc_id", nil, self.$range(self.ts, $rb_plus(self.ts, 1)));;
+            } else if ($eqeqeq(74, $ret_or_1)) {
+              
+              
+              p = $rb_minus(self.te, 1);;
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_203 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_203
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_204 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_204
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_205 = (function() {if ($truthy(($ret_or_206 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_206
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_205
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_207 = self.escape))) {
-                return $ret_or_207
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(48, $ret_or_1)) {
+              
+              
+              p = $rb_minus(self.te, 1);;
+              
+              self.$emit("tIDENTIFIER");
+              if (($not(self.static_env['$nil?']()) && ($truthy(self.static_env['$declared?'](self.$tok()))))) {
+                
+                self.cs = 465;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((170)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "invalid_hex_escape", nil, self.$range($rb_minus(self.escape_s, 1), $rb_plus(p, 2)));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_208 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                
+                self.cs = self.$arg_or_cmdarg(cmd_state);
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              };;
+            } else if ($eqeqeq(53, $ret_or_1)) {
+              
+              
+              p = $rb_minus(self.te, 1);;
+            } else if ($eqeqeq(68, $ret_or_1)) {
+              
+              
+              p = $rb_minus(self.te, 1);;
+              
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(51, $ret_or_1)) {
+              
+              if ($eqeqeq(99, ($ret_or_2 = self.act))) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit("tUNARY_NUM", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
+                p = $rb_minus(p, 1);
+                self.cs = 810;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(106, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$diagnostic("error", "unterminated_heredoc_id", nil, self.$range(self.ts, $rb_plus(self.ts, 1)));
+              } else if ($eqeqeq(117, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                if ($truthy($rb_ge(self.version, 27))) {
+                  
+                  self.$emit("tPIPE", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
+                  p = $rb_minus(p, 1);
+                  self.cs = 563;
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  p = $rb_minus(p, 2);
+                  
+                  self.cs = 810;
+                  _goto_level = _again;
+                  continue;;;
+                };
+              } else if ($eqeqeq(121, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('PUNCTUATION_BEGIN'));
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(122, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit("kRESCUE", "rescue".$freeze(), self.ts, tm);
+                p = $rb_minus(tm, 1);
+                self.cs = 539;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(123, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('KEYWORDS_BEGIN'));
+                self.command_start = true;
+                self.cs = 802;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(127, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                p = $rb_minus(self.ts, 1);
+                
+                self.cs = 810;
+                _goto_level = _again;
+                continue;;;
+              } else if ($eqeqeq(128, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit("tIDENTIFIER");
+                if (($not(self.static_env['$nil?']()) && ($truthy(self.static_env['$declared?'](self.$tok()))))) {
+                  
+                  self.cs = 465;
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  self.cs = self.$arg_or_cmdarg(cmd_state);
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+              } else if ($eqeqeq(132, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                p = $rb_minus(self.ts, 1);
+                
+                self.cs = 810;
+                _goto_level = _again;
+                continue;;;
               } else {
-                return $ret_or_208
-              }; return nil; })())) {
+                nil
+              };
+            } else if ($eqeqeq(395, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              self.cs = 563;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(396, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(397, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+            } else if ($eqeqeq(401, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              self.cs = 563;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(77, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(405, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              
+              self.cs = self.$push_literal(self.$tok(), self.$tok(), self.ts);
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(404, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              self.cs = 563;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(403, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(407, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+            } else if ($eqeqeq(406, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              self.cs = 563;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(76, $ret_or_1)) {
+              
+              
+              p = $rb_minus(self.te, 1);;
+              
+              p = $rb_minus(p, 1);
+              
+              self.cs = 563;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(440, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit("tLAMBDA", "->".$freeze(), self.ts, $rb_plus(self.ts, 2));
+              self.lambda_stack.$push(self.paren_nest);
+              self.cs = 465;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(86, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit("kCLASS", "class".$freeze(), self.ts, $rb_plus(self.ts, 5));
+              self.$emit("tLSHFT", "<<".$freeze(), $rb_minus(self.te, 2), self.te);
+              self.cs = 802;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(415, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              $b = [self.$tok(), self.$tok()['$[]'](-1).$chr()], (type = $b[0]), (delimiter = $b[1]), $b;
+              
+              self.cs = self.$push_literal(type, delimiter, self.ts, nil, false, false, true);
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(79, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              
+              
+              $writer = [self.top, self.cs];
+              $send(self.stack, '[]=', $to_a($writer));
+              $writer[$rb_minus($writer["length"], 1)];;
+              self.top = $rb_plus(self.top, 1);
+              self.cs = 347;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(436, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit_table($$('PUNCTUATION'));
+              self.cs = 473;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(489, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit_table($$('PUNCTUATION'));
+              self.cs = 802;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(429, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit_table($$('PUNCTUATION'));
+              self.cs = 802;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(434, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit("tOP_ASGN", self.$tok(self.ts, $rb_minus(self.te, 1)));
+              self.cs = 563;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(420, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit("tEH", "?".$freeze());
+              self.cs = 802;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(417, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit_table($$('PUNCTUATION'));
+              self.cs = 563;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(419, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit("tSEMI", ";".$freeze());
+              self.command_start = true;
+              self.cs = 802;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(494, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$diagnostic("error", "bare_backslash", nil, self.$range(self.ts, $rb_plus(self.ts, 1)));
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(414, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$diagnostic("fatal", "unexpected", $hash2(["character"], {"character": self.$tok().$inspect()['$[]']($range(1, -2, false))}));;
+            } else if ($eqeqeq(413, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(505, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit_table($$('KEYWORDS'));
+              self.cs = 352;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(503, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("kCLASS", "class".$freeze(), self.ts, $rb_plus(self.ts, 5));
+              self.$emit("tLSHFT", "<<".$freeze(), $rb_minus(self.te, 2), self.te);
+              self.cs = 802;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(502, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit_table($$('KEYWORDS'));
+              self.command_start = true;
+              self.cs = 802;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(444, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$diagnostic("error", "no_dot_digit_literal");;
+            } else if ($eqeqeq(491, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tCONSTANT");
+              self.cs = self.$arg_or_cmdarg(cmd_state);
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(433, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              
+              
+              $writer = [self.top, self.cs];
+              $send(self.stack, '[]=', $to_a($writer));
+              $writer[$rb_minus($writer["length"], 1)];;
+              self.top = $rb_plus(self.top, 1);
+              self.cs = 347;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(441, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit_table($$('PUNCTUATION'));
+              self.cs = 473;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(497, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tIDENTIFIER");
+              if (($not(self.static_env['$nil?']()) && ($truthy(self.static_env['$declared?'](self.$tok()))))) {
+                
+                self.cs = 465;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else {
+                
+                self.cs = self.$arg_or_cmdarg(cmd_state);
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              };;
+            } else if ($eqeqeq(439, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit_table($$('PUNCTUATION'));
+              self.cs = 802;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(435, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit_table($$('PUNCTUATION'));
+              self.cs = 802;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(428, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit_table($$('PUNCTUATION'));
+              self.cs = 563;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(442, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit_table($$('PUNCTUATION'));
+              self.cs = 563;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(426, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+            } else if ($eqeqeq(432, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$diagnostic("fatal", "unexpected", $hash2(["character"], {"character": self.$tok().$inspect()['$[]']($range(1, -2, false))}));;
+            } else if ($eqeqeq(84, $ret_or_1)) {
+              
+              
+              p = $rb_minus(self.te, 1);;
+              
+              digits = self.$tok(self.num_digits_s, self.num_suffix_s);
+              if ($truthy(digits['$end_with?']("_".$freeze()))) {
+                self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
+              } else if ((($truthy(digits['$empty?']()) && ($eqeq(self.num_base, 8))) && ($truthy(self['$version?'](18))))) {
+                digits = "0".$freeze()
+              } else if ($truthy(digits['$empty?']())) {
+                self.$diagnostic("error", "empty_numeric")
+              } else if (($eqeq(self.num_base, 8) && ($truthy((invalid_idx = digits.$index(/[89]/)))))) {
+                
+                invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
+                self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));
+              };
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
+              } else {
+                self.num_xfrm.$call(digits.$to_i(self.num_base))
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(80, $ret_or_1)) {
+              
+              
+              p = $rb_minus(self.te, 1);;
+              
+              self.$diagnostic("error", "no_dot_digit_literal");;
+            } else if ($eqeqeq(83, $ret_or_1)) {
+              
+              
+              p = $rb_minus(self.te, 1);;
+              
+              digits = self.$tok(self.ts, self.num_suffix_s);
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tFLOAT", self.$Float(digits), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
+              } else {
+                self.num_xfrm.$call(digits)
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(78, $ret_or_1)) {
+              
+              
+              p = $rb_minus(self.te, 1);;
+              
+              self.$diagnostic("fatal", "unexpected", $hash2(["character"], {"character": self.$tok().$inspect()['$[]']($range(1, -2, false))}));;
+            } else if ($eqeqeq(81, $ret_or_1)) {
+              
+              if ($eqeqeq(145, ($ret_or_2 = self.act))) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                if ($eqeq(self.lambda_stack.$last(), self.paren_nest)) {
+                  
+                  self.lambda_stack.$pop();
+                  if ($eqeq(self.$tok(), "{".$freeze())) {
+                    self.$emit("tLAMBEG", "{".$freeze())
+                  } else {
+                    self.$emit("kDO_LAMBDA", "do".$freeze())
+                  };
+                } else if ($eqeq(self.$tok(), "{".$freeze())) {
+                  self.$emit("tLCURLY", "{".$freeze())
+                } else {
+                  self.$emit_do()
+                };
+                if ($eqeq(self.$tok(), "{".$freeze())) {
+                  self.paren_nest = $rb_plus(self.paren_nest, 1)
+                };
+                self.command_start = true;
+                self.cs = 802;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(146, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('KEYWORDS'));
+                self.cs = 352;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(147, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit("kCLASS", "class".$freeze(), self.ts, $rb_plus(self.ts, 5));
+                self.$emit("tLSHFT", "<<".$freeze(), $rb_minus(self.te, 2), self.te);
+                self.cs = 802;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(148, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('KEYWORDS'));
+                self.cs = 563;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(149, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('KEYWORDS'));
+                self.command_start = true;
+                self.cs = 802;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(150, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('KEYWORDS'));
+                self.cs = 539;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(151, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('KEYWORDS'));
+                if (($truthy(self['$version?'](18)) && ($eqeq(self.$tok(), "not".$freeze())))) {
+                  
+                  self.cs = 563;
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  self.cs = 494;
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+              } else if ($eqeqeq(152, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                if ($truthy(self['$version?'](18))) {
+                  
+                  self.$emit("tIDENTIFIER");
+                  if (!($not(self.static_env['$nil?']()) && ($truthy(self.static_env['$declared?'](self.$tok()))))) {
+                    self.cs = self.$arg_or_cmdarg(cmd_state)
+                  };
+                } else {
+                  self.$emit("k__ENCODING__", "__ENCODING__".$freeze())
+                };
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(153, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('KEYWORDS'));
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(154, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                digits = self.$tok(self.num_digits_s, self.num_suffix_s);
+                if ($truthy(digits['$end_with?']("_".$freeze()))) {
+                  self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
+                } else if ((($truthy(digits['$empty?']()) && ($eqeq(self.num_base, 8))) && ($truthy(self['$version?'](18))))) {
+                  digits = "0".$freeze()
+                } else if ($truthy(digits['$empty?']())) {
+                  self.$diagnostic("error", "empty_numeric")
+                } else if (($eqeq(self.num_base, 8) && ($truthy((invalid_idx = digits.$index(/[89]/)))))) {
+                  
+                  invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
+                  self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));
+                };
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  
+                  self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
+                  p = $rb_minus(self.num_suffix_s, 1);
+                } else {
+                  self.num_xfrm.$call(digits.$to_i(self.num_base))
+                };
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(156, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": self.$tok($rb_minus(self.te, 1), self.te)}), self.$range($rb_minus(self.te, 1), self.te))
+                } else {
+                  
+                  self.$emit("tINTEGER", self.$tok(self.ts, $rb_minus(self.te, 1)).$to_i(), self.ts, $rb_minus(self.te, 1));
+                  p = $rb_minus(p, 1);
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+              } else if ($eqeqeq(157, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": self.$tok($rb_minus(self.te, 1), self.te)}), self.$range($rb_minus(self.te, 1), self.te))
+                } else {
+                  
+                  self.$emit("tFLOAT", self.$tok(self.ts, $rb_minus(self.te, 1)).$to_f(), self.ts, $rb_minus(self.te, 1));
+                  p = $rb_minus(p, 1);
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+              } else if ($eqeqeq(158, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                digits = self.$tok(self.ts, self.num_suffix_s);
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  
+                  self.$emit("tFLOAT", self.$Float(digits), self.ts, self.num_suffix_s);
+                  p = $rb_minus(self.num_suffix_s, 1);
+                } else {
+                  self.num_xfrm.$call(digits)
+                };
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(160, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit("tCONSTANT");
+                self.cs = self.$arg_or_cmdarg(cmd_state);
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(164, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit("tIDENTIFIER");
+                if (($not(self.static_env['$nil?']()) && ($truthy(self.static_env['$declared?'](self.$tok()))))) {
+                  
+                  self.cs = 465;
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  self.cs = self.$arg_or_cmdarg(cmd_state);
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+              } else if ($eqeqeq(165, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                if ($eqeq(tm, self.te)) {
+                  self.$emit("tFID")
+                } else {
+                  
+                  self.$emit("tIDENTIFIER", self.$tok(self.ts, tm), self.ts, tm);
+                  p = $rb_minus(tm, 1);
+                };
+                self.cs = 494;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(167, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('PUNCTUATION'));
+                self.cs = 802;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(168, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('PUNCTUATION'));
+                self.cs = 563;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else {
+                nil
+              };
+            } else if ($eqeqeq(516, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit("tNL", nil, self.newline_s, $rb_plus(self.newline_s, 1));
+              if ($truthy($rb_lt(self.version, 27))) {
+                
+                p = $rb_minus(p, 1);
+                self.cs = 186;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else {
+                
+                self.$emit("tBDOT3");
+                self.cs = 563;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              };;
+            } else if ($eqeqeq(95, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(tm, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(510, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit("tNL", nil, self.newline_s, $rb_plus(self.newline_s, 1));
+              p = $rb_minus(p, 1);
+              self.cs = 186;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(513, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              if ($truthy($rb_lt(self.version, 27))) {
+                
+                self.$emit("tNL", nil, self.newline_s, $rb_plus(self.newline_s, 1));
+                p = $rb_minus(p, 1);
+                self.cs = 186;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              };;
+            } else if ($eqeqeq(515, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tNL", nil, self.newline_s, $rb_plus(self.newline_s, 1));
+              if ($truthy($rb_lt(self.version, 27))) {
+                
+                p = $rb_minus(p, 1);
+                self.cs = 186;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else {
+                
+                self.$emit("tBDOT2");
+                self.cs = 563;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              };;
+            } else if ($eqeqeq(514, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(tm, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(512, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tNL", nil, self.newline_s, $rb_plus(self.newline_s, 1));
+              p = $rb_minus(p, 1);
+              self.cs = 186;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(90, $ret_or_1)) {
+              
+              
+              p = $rb_minus(self.te, 1);;
+              
+              if ($truthy($rb_lt(self.version, 27))) {
+                
+                self.$emit("tNL", nil, self.newline_s, $rb_plus(self.newline_s, 1));
+                p = $rb_minus(p, 1);
+                self.cs = 186;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              };;
+            } else if ($eqeqeq(87, $ret_or_1)) {
+              
+              
+              p = $rb_minus(self.te, 1);;
+              
+              self.$emit("tNL", nil, self.newline_s, $rb_plus(self.newline_s, 1));
+              p = $rb_minus(p, 1);
+              self.cs = 186;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(91, $ret_or_1)) {
+              
+              if ($eqeqeq(181, ($ret_or_2 = self.act))) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                if ($truthy($rb_lt(self.version, 27))) {
+                  
+                  self.$emit("tNL", nil, self.newline_s, $rb_plus(self.newline_s, 1));
+                  p = $rb_minus(p, 1);
+                  self.cs = 186;
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+              } else if ($eqeqeq(185, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit("tNL", nil, self.newline_s, $rb_plus(self.newline_s, 1));
+                p = $rb_minus(p, 1);
+                self.cs = 186;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else {
+                nil
+              };
+            } else if ($eqeqeq(519, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit_comment(self.eq_begin_s, self.te);
+              
+              self.cs = self.cs_before_block_comment;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(518, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$diagnostic("fatal", "embedded_document", nil, self.$range(self.eq_begin_s, $rb_plus(self.eq_begin_s, "=begin".$length())));;
+            } else if ($eqeqeq(106, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.eq_begin_s = self.ts;
+              
+              self.cs = 998;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(2, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(pe, 3);;
+            } else if ($eqeqeq(98, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              cmd_state = true;
+              p = $rb_minus(p, 1);
+              
+              self.cs = 802;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(99, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(100, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+            } else if ($eqeqeq(105, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.eq_begin_s = self.ts;
+              
+              self.cs = 998;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(104, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              cmd_state = true;
+              p = $rb_minus(p, 1);
+              
+              self.cs = 802;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(1, $ret_or_1)) {
+              
+              
+              p = $rb_minus(self.te, 1);;
+              
+              cmd_state = true;
+              p = $rb_minus(p, 1);
+              
+              self.cs = 802;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(67, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+            } else if ($eqeqeq(110, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              current_literal = self.$literal();
+              if ($eqeq(self.te, pe)) {
+                self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))
+              };
+              if ($truthy(current_literal['$heredoc?']())) {
+                
+                line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  line = line.$gsub(/\r.*$/, "".$freeze())
+                };
+                if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+                  
+                  self.herebody_s = self.te;
+                  p = $rb_minus(current_literal.$heredoc_e(), 1);
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  current_literal.$infer_indent_level(line);
+                  self.herebody_s = self.te;
+                };
+              } else {
+                
+                if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+                  
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+                if ($truthy(self.herebody_s)) {
+                  
+                  p = $rb_minus(self.herebody_s, 1);
+                  self.herebody_s = nil;
+                };
+              };
+              if (($truthy(current_literal['$words?']()) && ($not(self['$eof_codepoint?'](self.source_pts['$[]'](p)))))) {
+                current_literal.$extend_space(self.ts, self.te)
+              } else {
+                
+                current_literal.$extend_string(self.$tok(), self.ts, self.te);
+                current_literal.$flush_string();
+              };;;
+            } else if ($eqeqeq(143, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              current_literal = self.$literal();
+              if ($eqeq(self.te, pe)) {
+                self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))
+              };
+              if ($truthy(current_literal['$heredoc?']())) {
+                
+                line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  line = line.$gsub(/\r.*$/, "".$freeze())
+                };
+                if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+                  
+                  self.herebody_s = self.te;
+                  p = $rb_minus(current_literal.$heredoc_e(), 1);
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  current_literal.$infer_indent_level(line);
+                  self.herebody_s = self.te;
+                };
+              } else {
+                
+                if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+                  
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+                if ($truthy(self.herebody_s)) {
+                  
+                  p = $rb_minus(self.herebody_s, 1);
+                  self.herebody_s = nil;
+                };
+              };
+              if (($truthy(current_literal['$words?']()) && ($not(self['$eof_codepoint?'](self.source_pts['$[]'](p)))))) {
+                current_literal.$extend_space(self.ts, self.te)
+              } else {
+                
+                current_literal.$extend_string(self.$tok(), self.ts, self.te);
+                current_literal.$flush_string();
+              };;;
+            } else if ($eqeqeq(174, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              current_literal = self.$literal();
+              if ($eqeq(self.te, pe)) {
+                self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))
+              };
+              if ($truthy(current_literal['$heredoc?']())) {
+                
+                line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  line = line.$gsub(/\r.*$/, "".$freeze())
+                };
+                if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+                  
+                  self.herebody_s = self.te;
+                  p = $rb_minus(current_literal.$heredoc_e(), 1);
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  current_literal.$infer_indent_level(line);
+                  self.herebody_s = self.te;
+                };
+              } else {
+                
+                if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+                  
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+                if ($truthy(self.herebody_s)) {
+                  
+                  p = $rb_minus(self.herebody_s, 1);
+                  self.herebody_s = nil;
+                };
+              };
+              if (($truthy(current_literal['$words?']()) && ($not(self['$eof_codepoint?'](self.source_pts['$[]'](p)))))) {
+                current_literal.$extend_space(self.ts, self.te)
+              } else {
+                
+                current_literal.$extend_string(self.$tok(), self.ts, self.te);
+                current_literal.$flush_string();
+              };;;
+            } else if ($eqeqeq(180, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              current_literal = self.$literal();
+              if ($eqeq(self.te, pe)) {
+                self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))
+              };
+              if ($truthy(current_literal['$heredoc?']())) {
+                
+                line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  line = line.$gsub(/\r.*$/, "".$freeze())
+                };
+                if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+                  
+                  self.herebody_s = self.te;
+                  p = $rb_minus(current_literal.$heredoc_e(), 1);
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  current_literal.$infer_indent_level(line);
+                  self.herebody_s = self.te;
+                };
+              } else {
+                
+                if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+                  
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+                if ($truthy(self.herebody_s)) {
+                  
+                  p = $rb_minus(self.herebody_s, 1);
+                  self.herebody_s = nil;
+                };
+              };
+              if (($truthy(current_literal['$words?']()) && ($not(self['$eof_codepoint?'](self.source_pts['$[]'](p)))))) {
+                current_literal.$extend_space(self.ts, self.te)
+              } else {
+                
+                current_literal.$extend_string(self.$tok(), self.ts, self.te);
+                current_literal.$flush_string();
+              };;;
+            } else if ($eqeqeq(186, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              current_literal = self.$literal();
+              if ($eqeq(self.te, pe)) {
+                self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))
+              };
+              if ($truthy(current_literal['$heredoc?']())) {
+                
+                line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  line = line.$gsub(/\r.*$/, "".$freeze())
+                };
+                if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+                  
+                  self.herebody_s = self.te;
+                  p = $rb_minus(current_literal.$heredoc_e(), 1);
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  current_literal.$infer_indent_level(line);
+                  self.herebody_s = self.te;
+                };
+              } else {
+                
+                if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+                  
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+                if ($truthy(self.herebody_s)) {
+                  
+                  p = $rb_minus(self.herebody_s, 1);
+                  self.herebody_s = nil;
+                };
+              };
+              if (($truthy(current_literal['$words?']()) && ($not(self['$eof_codepoint?'](self.source_pts['$[]'](p)))))) {
+                current_literal.$extend_space(self.ts, self.te)
+              } else {
+                
+                current_literal.$extend_string(self.$tok(), self.ts, self.te);
+                current_literal.$flush_string();
+              };;;
+            } else if ($eqeqeq(193, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              current_literal = self.$literal();
+              if ($eqeq(self.te, pe)) {
+                self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))
+              };
+              if ($truthy(current_literal['$heredoc?']())) {
+                
+                line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  line = line.$gsub(/\r.*$/, "".$freeze())
+                };
+                if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+                  
+                  self.herebody_s = self.te;
+                  p = $rb_minus(current_literal.$heredoc_e(), 1);
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  current_literal.$infer_indent_level(line);
+                  self.herebody_s = self.te;
+                };
+              } else {
+                
+                if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+                  
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+                if ($truthy(self.herebody_s)) {
+                  
+                  p = $rb_minus(self.herebody_s, 1);
+                  self.herebody_s = nil;
+                };
+              };
+              if (($truthy(current_literal['$words?']()) && ($not(self['$eof_codepoint?'](self.source_pts['$[]'](p)))))) {
+                current_literal.$extend_space(self.ts, self.te)
+              } else {
+                
+                current_literal.$extend_string(self.$tok(), self.ts, self.te);
+                current_literal.$flush_string();
+              };;;
+            } else if ($eqeqeq(196, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              current_literal = self.$literal();
+              if ($eqeq(self.te, pe)) {
+                self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))
+              };
+              if ($truthy(current_literal['$heredoc?']())) {
+                
+                line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  line = line.$gsub(/\r.*$/, "".$freeze())
+                };
+                if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+                  
+                  self.herebody_s = self.te;
+                  p = $rb_minus(current_literal.$heredoc_e(), 1);
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  current_literal.$infer_indent_level(line);
+                  self.herebody_s = self.te;
+                };
+              } else {
+                
+                if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+                  
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+                if ($truthy(self.herebody_s)) {
+                  
+                  p = $rb_minus(self.herebody_s, 1);
+                  self.herebody_s = nil;
+                };
+              };
+              if (($truthy(current_literal['$words?']()) && ($not(self['$eof_codepoint?'](self.source_pts['$[]'](p)))))) {
+                current_literal.$extend_space(self.ts, self.te)
+              } else {
+                
+                current_literal.$extend_string(self.$tok(), self.ts, self.te);
+                current_literal.$flush_string();
+              };;;
+            } else if ($eqeqeq(204, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              current_literal = self.$literal();
+              if ($eqeq(self.te, pe)) {
+                self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))
+              };
+              if ($truthy(current_literal['$heredoc?']())) {
+                
+                line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  line = line.$gsub(/\r.*$/, "".$freeze())
+                };
+                if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+                  
+                  self.herebody_s = self.te;
+                  p = $rb_minus(current_literal.$heredoc_e(), 1);
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  current_literal.$infer_indent_level(line);
+                  self.herebody_s = self.te;
+                };
+              } else {
+                
+                if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+                  
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+                if ($truthy(self.herebody_s)) {
+                  
+                  p = $rb_minus(self.herebody_s, 1);
+                  self.herebody_s = nil;
+                };
+              };
+              if (($truthy(current_literal['$words?']()) && ($not(self['$eof_codepoint?'](self.source_pts['$[]'](p)))))) {
+                current_literal.$extend_space(self.ts, self.te)
+              } else {
+                
+                current_literal.$extend_string(self.$tok(), self.ts, self.te);
+                current_literal.$flush_string();
+              };;;
+            } else if ($eqeqeq(275, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;;
+            } else if ($eqeqeq(266, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(tm, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;;
+            } else if ($eqeqeq(258, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;;
+            } else if ($eqeqeq(358, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              escape = $hash2([" ", "\r", "\n", "\t", "\v", "\f"], {" ": "\\s", "\r": "\\r", "\n": "\\n", "\t": "\\t", "\v": "\\v", "\f": "\\f"})['$[]'](self.source_buffer.$slice($rb_plus(self.ts, 1)));
+              self.$diagnostic("warning", "invalid_escape_use", $hash2(["escape"], {"escape": escape}), self.$range());
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;;
+            } else if ($eqeqeq(333, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              followed_by_nl = $rb_minus(self.te, 1)['$=='](self.newline_s);
+              nl_emitted = false;
+              dots_te = ($truthy(followed_by_nl) ? ($rb_minus(self.te, 1)) : (self.te));
+              if ($truthy($rb_ge(self.version, 30))) {
+                if (($truthy(self.lambda_stack['$any?']()) && ($eqeq($rb_plus(self.lambda_stack.$last(), 1), self.paren_nest)))) {
+                  self.$emit("tDOT3", "...".$freeze(), self.ts, dots_te)
+                } else {
+                  
+                  self.$emit("tBDOT3", "...".$freeze(), self.ts, dots_te);
+                  if ((($truthy($rb_ge(self.version, 31)) && ($truthy(followed_by_nl))) && ($truthy(self.context.$in_argdef())))) {
+                    
+                    self.$emit("tNL", $rb_minus(self.te, 1), self.te);
+                    nl_emitted = true;
+                  };
+                }
+              } else if ($truthy($rb_ge(self.version, 27))) {
+                self.$emit("tBDOT3", "...".$freeze(), self.ts, dots_te)
+              } else {
+                self.$emit("tDOT3", "...".$freeze(), self.ts, dots_te)
+              };
+              if (($truthy(followed_by_nl) && ($not(nl_emitted)))) {
+                p = $rb_minus(p, 1)
+              };
+              self.cs = 563;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(321, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              self.cs_before_block_comment = self.cs;
+              
+              self.cs = 186;
+              _goto_level = _again;
+              continue;;;;;
+            } else if ($eqeqeq(443, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              if ($eqeq(self.paren_nest, 0)) {
+                self.$diagnostic("warning", "triple_dot_at_eol", nil, self.$range(self.ts, $rb_minus(self.te, 1)))
+              };
+              self.$emit("tDOT3", "...".$freeze(), self.ts, $rb_minus(self.te, 1));
+              p = $rb_minus(p, 1);
+              self.cs = 563;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(520, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit_comment(self.eq_begin_s, self.te);
+              
+              self.cs = self.cs_before_block_comment;
+              _goto_level = _again;
+              continue;;;;;
+            } else if ($eqeqeq(517, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.te = $rb_plus(p, 1);;
+            } else if ($eqeqeq(107, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.eq_begin_s = self.ts;
+              
+              self.cs = 998;
+              _goto_level = _again;
+              continue;;;;;
+            } else if ($eqeqeq(3, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(pe, 3);;;
+            } else if ($eqeqeq(465, $ret_or_1)) {
+              
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$3(chars){var self = $$3.$$s == null ? this : $$3.$$s;
+
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tRATIONAL", self.$Rational(chars));}, {$$arity: 1, $$s: self});;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              digits = self.$tok(self.num_digits_s, self.num_suffix_s);
+              if ($truthy(digits['$end_with?']("_".$freeze()))) {
+                self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
+              } else if ((($truthy(digits['$empty?']()) && ($eqeq(self.num_base, 8))) && ($truthy(self['$version?'](18))))) {
+                digits = "0".$freeze()
+              } else if ($truthy(digits['$empty?']())) {
+                self.$diagnostic("error", "empty_numeric")
+              } else if (($eqeq(self.num_base, 8) && ($truthy((invalid_idx = digits.$index(/[89]/)))))) {
+                
+                invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
+                self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));
+              };
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
+              } else {
+                self.num_xfrm.$call(digits.$to_i(self.num_base))
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(463, $ret_or_1)) {
+              
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$4(chars){var self = $$4.$$s == null ? this : $$4.$$s;
+
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tIMAGINARY", self.$Complex(0, chars));}, {$$arity: 1, $$s: self});;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              digits = self.$tok(self.num_digits_s, self.num_suffix_s);
+              if ($truthy(digits['$end_with?']("_".$freeze()))) {
+                self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
+              } else if ((($truthy(digits['$empty?']()) && ($eqeq(self.num_base, 8))) && ($truthy(self['$version?'](18))))) {
+                digits = "0".$freeze()
+              } else if ($truthy(digits['$empty?']())) {
+                self.$diagnostic("error", "empty_numeric")
+              } else if (($eqeq(self.num_base, 8) && ($truthy((invalid_idx = digits.$index(/[89]/)))))) {
+                
+                invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
+                self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));
+              };
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
+              } else {
+                self.num_xfrm.$call(digits.$to_i(self.num_base))
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(468, $ret_or_1)) {
+              
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$5(chars){var self = $$5.$$s == null ? this : $$5.$$s;
+
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tIMAGINARY", self.$Complex(0, self.$Rational(chars)));}, {$$arity: 1, $$s: self});;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              digits = self.$tok(self.num_digits_s, self.num_suffix_s);
+              if ($truthy(digits['$end_with?']("_".$freeze()))) {
+                self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
+              } else if ((($truthy(digits['$empty?']()) && ($eqeq(self.num_base, 8))) && ($truthy(self['$version?'](18))))) {
+                digits = "0".$freeze()
+              } else if ($truthy(digits['$empty?']())) {
+                self.$diagnostic("error", "empty_numeric")
+              } else if (($eqeq(self.num_base, 8) && ($truthy((invalid_idx = digits.$index(/[89]/)))))) {
+                
+                invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
+                self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));
+              };
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
+              } else {
+                self.num_xfrm.$call(digits.$to_i(self.num_base))
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(466, $ret_or_1)) {
+              
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$6(chars){var self = $$6.$$s == null ? this : $$6.$$s;
+                if (self.ts == null) self.ts = nil;
+                if (self.te == null) self.te = nil;
+
+                
+                
+                if (chars == null) chars = nil;;
+                self.$emit("tINTEGER", chars, self.ts, $rb_minus(self.te, 2));
+                return (p = $rb_minus(p, 2));}, {$$arity: 1, $$s: self});;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              digits = self.$tok(self.num_digits_s, self.num_suffix_s);
+              if ($truthy(digits['$end_with?']("_".$freeze()))) {
+                self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
+              } else if ((($truthy(digits['$empty?']()) && ($eqeq(self.num_base, 8))) && ($truthy(self['$version?'](18))))) {
+                digits = "0".$freeze()
+              } else if ($truthy(digits['$empty?']())) {
+                self.$diagnostic("error", "empty_numeric")
+              } else if (($eqeq(self.num_base, 8) && ($truthy((invalid_idx = digits.$index(/[89]/)))))) {
+                
+                invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
+                self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));
+              };
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
+              } else {
+                self.num_xfrm.$call(digits.$to_i(self.num_base))
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(464, $ret_or_1)) {
+              
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$7(chars){var self = $$7.$$s == null ? this : $$7.$$s;
+                if (self.ts == null) self.ts = nil;
+                if (self.te == null) self.te = nil;
+
+                
+                
+                if (chars == null) chars = nil;;
+                self.$emit("tINTEGER", chars, self.ts, $rb_minus(self.te, 2));
+                return (p = $rb_minus(p, 2));}, {$$arity: 1, $$s: self});;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              digits = self.$tok(self.num_digits_s, self.num_suffix_s);
+              if ($truthy(digits['$end_with?']("_".$freeze()))) {
+                self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
+              } else if ((($truthy(digits['$empty?']()) && ($eqeq(self.num_base, 8))) && ($truthy(self['$version?'](18))))) {
+                digits = "0".$freeze()
+              } else if ($truthy(digits['$empty?']())) {
+                self.$diagnostic("error", "empty_numeric")
+              } else if (($eqeq(self.num_base, 8) && ($truthy((invalid_idx = digits.$index(/[89]/)))))) {
+                
+                invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
+                self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));
+              };
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
+              } else {
+                self.num_xfrm.$call(digits.$to_i(self.num_base))
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(467, $ret_or_1)) {
+              
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$8(chars){var self = $$8.$$s == null ? this : $$8.$$s;
+                if (self.ts == null) self.ts = nil;
+                if (self.te == null) self.te = nil;
+
+                
+                
+                if (chars == null) chars = nil;;
+                self.$emit("tINTEGER", chars, self.ts, $rb_minus(self.te, 6));
+                return (p = $rb_minus(p, 6));}, {$$arity: 1, $$s: self});;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              digits = self.$tok(self.num_digits_s, self.num_suffix_s);
+              if ($truthy(digits['$end_with?']("_".$freeze()))) {
+                self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
+              } else if ((($truthy(digits['$empty?']()) && ($eqeq(self.num_base, 8))) && ($truthy(self['$version?'](18))))) {
+                digits = "0".$freeze()
+              } else if ($truthy(digits['$empty?']())) {
+                self.$diagnostic("error", "empty_numeric")
+              } else if (($eqeq(self.num_base, 8) && ($truthy((invalid_idx = digits.$index(/[89]/)))))) {
+                
+                invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
+                self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));
+              };
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
+              } else {
+                self.num_xfrm.$call(digits.$to_i(self.num_base))
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(456, $ret_or_1)) {
+              
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$9(chars){var self = $$9.$$s == null ? this : $$9.$$s;
+
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tIMAGINARY", self.$Complex(0, self.$Float(chars)));}, {$$arity: 1, $$s: self});;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              digits = self.$tok(self.ts, self.num_suffix_s);
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tFLOAT", self.$Float(digits), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
+              } else {
+                self.num_xfrm.$call(digits)
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(457, $ret_or_1)) {
+              
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$10(chars){var self = $$10.$$s == null ? this : $$10.$$s;
+                if (self.ts == null) self.ts = nil;
+                if (self.te == null) self.te = nil;
+
+                
+                
+                if (chars == null) chars = nil;;
+                self.$emit("tFLOAT", self.$Float(chars), self.ts, $rb_minus(self.te, 2));
+                return (p = $rb_minus(p, 2));}, {$$arity: 1, $$s: self});;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              digits = self.$tok(self.ts, self.num_suffix_s);
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tFLOAT", self.$Float(digits), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
+              } else {
+                self.num_xfrm.$call(digits)
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(458, $ret_or_1)) {
+              
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$11(chars){var self = $$11.$$s == null ? this : $$11.$$s;
+
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tRATIONAL", self.$Rational(chars));}, {$$arity: 1, $$s: self});;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              digits = self.$tok(self.ts, self.num_suffix_s);
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tFLOAT", self.$Float(digits), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
+              } else {
+                self.num_xfrm.$call(digits)
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(460, $ret_or_1)) {
+              
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$12(chars){var self = $$12.$$s == null ? this : $$12.$$s;
+
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tIMAGINARY", self.$Complex(0, self.$Rational(chars)));}, {$$arity: 1, $$s: self});;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              digits = self.$tok(self.ts, self.num_suffix_s);
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tFLOAT", self.$Float(digits), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
+              } else {
+                self.num_xfrm.$call(digits)
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(459, $ret_or_1)) {
+              
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$13(chars){var self = $$13.$$s == null ? this : $$13.$$s;
+                if (self.ts == null) self.ts = nil;
+                if (self.te == null) self.te = nil;
+
+                
+                
+                if (chars == null) chars = nil;;
+                self.$emit("tFLOAT", self.$Float(chars), self.ts, $rb_minus(self.te, 6));
+                return (p = $rb_minus(p, 6));}, {$$arity: 1, $$s: self});;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              digits = self.$tok(self.ts, self.num_suffix_s);
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tFLOAT", self.$Float(digits), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
+              } else {
+                self.num_xfrm.$call(digits)
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(137, $ret_or_1)) {
+              
+              
+              self.escape = "";
+              codepoints = self.$tok($rb_plus(self.escape_s, 2), $rb_minus(p, 1));
+              codepoint_s = $rb_plus(self.escape_s, 2);
+              if ($truthy($rb_lt(self.version, 24))) {
+                
+                if (($truthy(codepoints['$start_with?'](" ")) || ($truthy(codepoints['$start_with?']("\t"))))) {
+                  self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_plus(self.escape_s, 2), $rb_plus(self.escape_s, 3)))
+                };
+                if ($truthy((spaces_p = codepoints.$index(/[ \t]{2}/)))) {
+                  self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_plus($rb_plus(codepoint_s, spaces_p), 1), $rb_plus($rb_plus(codepoint_s, spaces_p), 2)))
+                };
+                if (($truthy(codepoints['$end_with?'](" ")) || ($truthy(codepoints['$end_with?']("\t"))))) {
+                  self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(p, 1), p))
+                };
+              };
+              (function(){var $brk = Opal.new_brk(); try {return $send(codepoints.$scan(/([0-9a-fA-F]+)|([ \t]+)/), 'each', [], function $$14($mlhs_tmp1){var $c, $d, self = $$14.$$s == null ? this : $$14.$$s, codepoint_str = nil, spaces = nil, codepoint = nil;
+                if (self.escape == null) self.escape = nil;
+
+                
+                
+                if ($mlhs_tmp1 == null) $mlhs_tmp1 = nil;;
+                $d = $mlhs_tmp1, $c = $to_ary($d), (codepoint_str = ($c[0] == null ? nil : $c[0])), (spaces = ($c[1] == null ? nil : $c[1])), $d;
+                if ($truthy(spaces)) {
+                  return (codepoint_s = $rb_plus(codepoint_s, spaces.$length()))
+                } else {
+                  
+                  codepoint = codepoint_str.$to_i(16);
+                  if ($truthy($rb_ge(codepoint, 1114112))) {
+                    
+                    self.$diagnostic("error", "unicode_point_too_large", nil, self.$range(codepoint_s, $rb_plus(codepoint_s, codepoint_str.$length())));
+                    
+                    Opal.brk(nil, $brk);
+                  };
+                  self.escape = $rb_plus(self.escape, codepoint.$chr($$$($$('Encoding'), 'UTF_8')));
+                  return (codepoint_s = $rb_plus(codepoint_s, codepoint_str.$length()));
+                };}, {$$arity: 1, $$s: self, $$brk: $brk, $$has_top_level_mlhs_arg: true})
+              } catch (err) { if (err === $brk) { return err.$v } else { throw err } }})();;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(168, $ret_or_1)) {
+              
+              
+              self.escape = "";
+              codepoints = self.$tok($rb_plus(self.escape_s, 2), $rb_minus(p, 1));
+              codepoint_s = $rb_plus(self.escape_s, 2);
+              if ($truthy($rb_lt(self.version, 24))) {
+                
+                if (($truthy(codepoints['$start_with?'](" ")) || ($truthy(codepoints['$start_with?']("\t"))))) {
+                  self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_plus(self.escape_s, 2), $rb_plus(self.escape_s, 3)))
+                };
+                if ($truthy((spaces_p = codepoints.$index(/[ \t]{2}/)))) {
+                  self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_plus($rb_plus(codepoint_s, spaces_p), 1), $rb_plus($rb_plus(codepoint_s, spaces_p), 2)))
+                };
+                if (($truthy(codepoints['$end_with?'](" ")) || ($truthy(codepoints['$end_with?']("\t"))))) {
+                  self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(p, 1), p))
+                };
+              };
+              (function(){var $brk = Opal.new_brk(); try {return $send(codepoints.$scan(/([0-9a-fA-F]+)|([ \t]+)/), 'each', [], function $$15($mlhs_tmp1){var $c, $d, self = $$15.$$s == null ? this : $$15.$$s, codepoint_str = nil, spaces = nil, codepoint = nil;
+                if (self.escape == null) self.escape = nil;
+
+                
+                
+                if ($mlhs_tmp1 == null) $mlhs_tmp1 = nil;;
+                $d = $mlhs_tmp1, $c = $to_ary($d), (codepoint_str = ($c[0] == null ? nil : $c[0])), (spaces = ($c[1] == null ? nil : $c[1])), $d;
+                if ($truthy(spaces)) {
+                  return (codepoint_s = $rb_plus(codepoint_s, spaces.$length()))
+                } else {
+                  
+                  codepoint = codepoint_str.$to_i(16);
+                  if ($truthy($rb_ge(codepoint, 1114112))) {
+                    
+                    self.$diagnostic("error", "unicode_point_too_large", nil, self.$range(codepoint_s, $rb_plus(codepoint_s, codepoint_str.$length())));
+                    
+                    Opal.brk(nil, $brk);
+                  };
+                  self.escape = $rb_plus(self.escape, codepoint.$chr($$$($$('Encoding'), 'UTF_8')));
+                  return (codepoint_s = $rb_plus(codepoint_s, codepoint_str.$length()));
+                };}, {$$arity: 1, $$s: self, $$brk: $brk, $$has_top_level_mlhs_arg: true})
+              } catch (err) { if (err === $brk) { return err.$v } else { throw err } }})();;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(382, $ret_or_1)) {
+              
+              
+              self.escape = "";
+              codepoints = self.$tok($rb_plus(self.escape_s, 2), $rb_minus(p, 1));
+              codepoint_s = $rb_plus(self.escape_s, 2);
+              if ($truthy($rb_lt(self.version, 24))) {
+                
+                if (($truthy(codepoints['$start_with?'](" ")) || ($truthy(codepoints['$start_with?']("\t"))))) {
+                  self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_plus(self.escape_s, 2), $rb_plus(self.escape_s, 3)))
+                };
+                if ($truthy((spaces_p = codepoints.$index(/[ \t]{2}/)))) {
+                  self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_plus($rb_plus(codepoint_s, spaces_p), 1), $rb_plus($rb_plus(codepoint_s, spaces_p), 2)))
+                };
+                if (($truthy(codepoints['$end_with?'](" ")) || ($truthy(codepoints['$end_with?']("\t"))))) {
+                  self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(p, 1), p))
+                };
+              };
+              (function(){var $brk = Opal.new_brk(); try {return $send(codepoints.$scan(/([0-9a-fA-F]+)|([ \t]+)/), 'each', [], function $$16($mlhs_tmp1){var $c, $d, self = $$16.$$s == null ? this : $$16.$$s, codepoint_str = nil, spaces = nil, codepoint = nil;
+                if (self.escape == null) self.escape = nil;
+
+                
+                
+                if ($mlhs_tmp1 == null) $mlhs_tmp1 = nil;;
+                $d = $mlhs_tmp1, $c = $to_ary($d), (codepoint_str = ($c[0] == null ? nil : $c[0])), (spaces = ($c[1] == null ? nil : $c[1])), $d;
+                if ($truthy(spaces)) {
+                  return (codepoint_s = $rb_plus(codepoint_s, spaces.$length()))
+                } else {
+                  
+                  codepoint = codepoint_str.$to_i(16);
+                  if ($truthy($rb_ge(codepoint, 1114112))) {
+                    
+                    self.$diagnostic("error", "unicode_point_too_large", nil, self.$range(codepoint_s, $rb_plus(codepoint_s, codepoint_str.$length())));
+                    
+                    Opal.brk(nil, $brk);
+                  };
+                  self.escape = $rb_plus(self.escape, codepoint.$chr($$$($$('Encoding'), 'UTF_8')));
+                  return (codepoint_s = $rb_plus(codepoint_s, codepoint_str.$length()));
+                };}, {$$arity: 1, $$s: self, $$brk: $brk, $$has_top_level_mlhs_arg: true})
+              } catch (err) { if (err === $brk) { return err.$v } else { throw err } }})();;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
+              } else {
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(118, $ret_or_1)) {
+              
+              
+              codepoint = self.source_pts['$[]']($rb_minus(p, 1));
+              if (($truthy($rb_ge(self.version, 30)) && (($eqeq(codepoint, 117) || ($eqeq(codepoint, 85)))))) {
+                self.$diagnostic("fatal", "invalid_escape")
+              };
+              if ($truthy((self.escape = $$('ESCAPES')['$[]'](codepoint))['$nil?']())) {
+                self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(149, $ret_or_1)) {
+              
+              
+              codepoint = self.source_pts['$[]']($rb_minus(p, 1));
+              if (($truthy($rb_ge(self.version, 30)) && (($eqeq(codepoint, 117) || ($eqeq(codepoint, 85)))))) {
+                self.$diagnostic("fatal", "invalid_escape")
+              };
+              if ($truthy((self.escape = $$('ESCAPES')['$[]'](codepoint))['$nil?']())) {
+                self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(363, $ret_or_1)) {
+              
+              
+              codepoint = self.source_pts['$[]']($rb_minus(p, 1));
+              if (($truthy($rb_ge(self.version, 30)) && (($eqeq(codepoint, 117) || ($eqeq(codepoint, 85)))))) {
+                self.$diagnostic("fatal", "invalid_escape")
+              };
+              if ($truthy((self.escape = $$('ESCAPES')['$[]'](codepoint))['$nil?']())) {
+                self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
+              } else {
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(121, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "invalid_escape");;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(152, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "invalid_escape");;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_209 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_209
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_210 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_210
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_211 = (function() {if ($truthy(($ret_or_212 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_212
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_211
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_213 = self.escape))) {
-                return $ret_or_213
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(366, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "invalid_escape");;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((384)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "invalid_hex_escape", nil, self.$range($rb_minus(self.escape_s, 1), $rb_plus(p, 2)));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_214 = self.escape))) {
-              return $ret_or_214
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((134)['$===']($case)) {
-            
-            self.escape = self.$tok($rb_plus(self.escape_s, 1), p).$to_i(16).$chr($$$($$($nesting, 'Encoding'), 'UTF_8'));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_215 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(123, $ret_or_1)) {
+              
+              
+              self.escape = "\u007F";;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                return $ret_or_215
-              }; return nil; })())) {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(154, $ret_or_1)) {
+              
+              
+              self.escape = "\u007F";;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_216 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_216
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_217 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_217
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_218 = (function() {if ($truthy(($ret_or_219 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_219
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_218
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_220 = self.escape))) {
-                return $ret_or_220
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(368, $ret_or_1)) {
+              
+              
+              self.escape = "\u007F";;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((165)['$===']($case)) {
-            
-            self.escape = self.$tok($rb_plus(self.escape_s, 1), p).$to_i(16).$chr($$$($$($nesting, 'Encoding'), 'UTF_8'));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_221 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(120, $ret_or_1)) {
+              
+              
+              self.escape = self.$encode_escape(self.$tok(self.escape_s, p).$to_i(8)['$%'](256));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                return $ret_or_221
-              }; return nil; })())) {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(151, $ret_or_1)) {
+              
+              
+              self.escape = self.$encode_escape(self.$tok(self.escape_s, p).$to_i(8)['$%'](256));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_222 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_222
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_223 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_223
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_224 = (function() {if ($truthy(($ret_or_225 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_225
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_224
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_226 = self.escape))) {
-                return $ret_or_226
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(365, $ret_or_1)) {
+              
+              
+              self.escape = self.$encode_escape(self.$tok(self.escape_s, p).$to_i(8)['$%'](256));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((379)['$===']($case)) {
-            
-            self.escape = self.$tok($rb_plus(self.escape_s, 1), p).$to_i(16).$chr($$$($$($nesting, 'Encoding'), 'UTF_8'));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_227 = self.escape))) {
-              return $ret_or_227
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((133)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(self.escape_s, 1), p));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_228 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(140, $ret_or_1)) {
+              
+              
+              self.escape = self.$encode_escape(self.$tok($rb_plus(self.escape_s, 1), p).$to_i(16));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                return $ret_or_228
-              }; return nil; })())) {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(171, $ret_or_1)) {
+              
+              
+              self.escape = self.$encode_escape(self.$tok($rb_plus(self.escape_s, 1), p).$to_i(16));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_229 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_229
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_230 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_230
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_231 = (function() {if ($truthy(($ret_or_232 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_232
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_231
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_233 = self.escape))) {
-                return $ret_or_233
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(385, $ret_or_1)) {
+              
+              
+              self.escape = self.$encode_escape(self.$tok($rb_plus(self.escape_s, 1), p).$to_i(16));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((164)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(self.escape_s, 1), p));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_234 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(139, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "invalid_hex_escape", nil, self.$range($rb_minus(self.escape_s, 1), $rb_plus(p, 2)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(170, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "invalid_hex_escape", nil, self.$range($rb_minus(self.escape_s, 1), $rb_plus(p, 2)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(384, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "invalid_hex_escape", nil, self.$range($rb_minus(self.escape_s, 1), $rb_plus(p, 2)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
+              } else {
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(134, $ret_or_1)) {
+              
+              
+              self.escape = self.$tok($rb_plus(self.escape_s, 1), p).$to_i(16).$chr($$$($$('Encoding'), 'UTF_8'));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(165, $ret_or_1)) {
+              
+              
+              self.escape = self.$tok($rb_plus(self.escape_s, 1), p).$to_i(16).$chr($$$($$('Encoding'), 'UTF_8'));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(379, $ret_or_1)) {
+              
+              
+              self.escape = self.$tok($rb_plus(self.escape_s, 1), p).$to_i(16).$chr($$$($$('Encoding'), 'UTF_8'));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
+              } else {
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(133, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(self.escape_s, 1), p));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(164, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(self.escape_s, 1), p));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(378, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(self.escape_s, 1), p));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
+              } else {
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(138, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(self.escape_s, 1), p));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(169, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(self.escape_s, 1), p));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(383, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(self.escape_s, 1), p));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
               } else {
-                return $ret_or_234
-              }; return nil; })())) {
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(135, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "unterminated_unicode", nil, self.$range($rb_minus(p, 1), p));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_235 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_235
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_236 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_236
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_237 = (function() {if ($truthy(($ret_or_238 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_238
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_237
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_239 = self.escape))) {
-                return $ret_or_239
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(166, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "unterminated_unicode", nil, self.$range($rb_minus(p, 1), p));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((378)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(self.escape_s, 1), p));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_240 = self.escape))) {
-              return $ret_or_240
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((138)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(self.escape_s, 1), p));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_241 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(380, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "unterminated_unicode", nil, self.$range($rb_minus(p, 1), p));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
               } else {
-                return $ret_or_241
-              }; return nil; })())) {
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(119, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "escape_eof", nil, self.$range($rb_minus(p, 1), p));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_242 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_242
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_243 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_243
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_244 = (function() {if ($truthy(($ret_or_245 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_245
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_244
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_246 = self.escape))) {
-                return $ret_or_246
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(150, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "escape_eof", nil, self.$range($rb_minus(p, 1), p));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((169)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(self.escape_s, 1), p));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_247 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(364, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "escape_eof", nil, self.$range($rb_minus(p, 1), p));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
               } else {
-                return $ret_or_247
-              }; return nil; })())) {
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(177, $ret_or_1)) {
+              
+              
+              self.escape_s = p;
+              self.escape = nil;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_248 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_248
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_249 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_249
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_250 = (function() {if ($truthy(($ret_or_251 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_251
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_250
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_252 = self.escape))) {
-                return $ret_or_252
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(182, $ret_or_1)) {
+              
+              
+              self.escape_s = p;
+              self.escape = nil;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((383)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(self.escape_s, 1), p));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_253 = self.escape))) {
-              return $ret_or_253
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((135)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "unterminated_unicode", nil, self.$range($rb_minus(p, 1), p));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_254 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(58, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.newline_s = p;;
+            } else if ($eqeqeq(31, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              tm = p;;
+            } else if ($eqeqeq(33, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              tm = p;;
+            } else if ($eqeqeq(35, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              tm = p;;
+            } else if ($eqeqeq(219, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(238, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(246, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(34, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;;
+            } else if ($eqeqeq(277, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(269, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;;
+            } else if ($eqeqeq(288, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(300, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(296, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;;
+            } else if ($eqeqeq(59, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit("tUNARY_NUM", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
+              p = $rb_minus(p, 1);
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(50, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit("tIDENTIFIER", ident_tok, ident_ts, ident_te);
+              p = $rb_minus(ident_te, 1);
+              if ((($not(self.static_env['$nil?']()) && ($truthy(self.static_env['$declared?'](ident_tok)))) && ($truthy($rb_lt(self.version, 25))))) {
+                self.cs = 465
               } else {
-                return $ret_or_254
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                self.cs = 525
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(318, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(402, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(398, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              if ($truthy(self.context.$in_kwarg())) {
+                
+                p = $rb_minus(p, 1);
+                
+                self.cs = 810;
+                _goto_level = _again;
+                continue;;;
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_255 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_255
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_256 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_256
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_257 = (function() {if ($truthy(($ret_or_258 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_258
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_257
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_259 = self.escape))) {
-                return $ret_or_259
+                
+                self.cs = 186;
+                _goto_level = _again;
+                continue;;
+              };;;
+            } else if ($eqeqeq(411, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(408, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              
+              self.cs = 186;
+              _goto_level = _again;
+              continue;;;;;
+            } else if ($eqeqeq(495, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(427, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              
+              self.cs = 990;
+              _goto_level = _again;
+              continue;;;;;
+            } else if ($eqeqeq(101, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(268, $ret_or_1)) {
+              
+              
+              self.cond.$push(false);
+              self.cmdarg.$push(false);
+              current_literal = self.$literal();
+              if ($truthy(current_literal)) {
+                current_literal.$start_interp_brace()
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              if ($eqeq(self.lambda_stack.$last(), self.paren_nest)) {
+                
+                self.lambda_stack.$pop();
+                self.$emit("tLAMBEG", "{".$freeze(), $rb_minus(self.te, 1), self.te);
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((166)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "unterminated_unicode", nil, self.$range($rb_minus(p, 1), p));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_260 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                self.$emit("tLCURLY", "{".$freeze(), $rb_minus(self.te, 1), self.te)
+              };
+              self.command_start = true;
+              self.paren_nest = $rb_plus(self.paren_nest, 1);
+              self.cs = 802;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(290, $ret_or_1)) {
+              
+              
+              self.cond.$push(false);
+              self.cmdarg.$push(false);
+              current_literal = self.$literal();
+              if ($truthy(current_literal)) {
+                current_literal.$start_interp_brace()
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              if ($eqeq(self.lambda_stack.$last(), self.paren_nest)) {
+                
+                self.lambda_stack.$pop();
+                self.$emit("tLAMBEG", "{".$freeze());
               } else {
-                return $ret_or_260
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                self.$emit("tLBRACE_ARG", "{".$freeze())
+              };
+              self.paren_nest = $rb_plus(self.paren_nest, 1);
+              self.command_start = true;
+              self.cs = 802;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(393, $ret_or_1)) {
+              
+              
+              self.cond.$push(false);
+              self.cmdarg.$push(false);
+              current_literal = self.$literal();
+              if ($truthy(current_literal)) {
+                current_literal.$start_interp_brace()
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              if ($eqeq(self.lambda_stack.$last(), self.paren_nest)) {
+                
+                self.lambda_stack.$pop();
+                self.command_start = true;
+                self.$emit("tLAMBEG", "{".$freeze());
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_261 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_261
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_262 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_262
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_263 = (function() {if ($truthy(($ret_or_264 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_264
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_263
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_265 = self.escape))) {
-                return $ret_or_265
+                self.$emit("tLBRACE", "{".$freeze())
+              };
+              self.paren_nest = $rb_plus(self.paren_nest, 1);
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(508, $ret_or_1)) {
+              
+              
+              self.cond.$push(false);
+              self.cmdarg.$push(false);
+              current_literal = self.$literal();
+              if ($truthy(current_literal)) {
+                current_literal.$start_interp_brace()
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              if ($eqeq(self.lambda_stack.$last(), self.paren_nest)) {
+                
+                self.lambda_stack.$pop();
+                if ($eqeq(self.$tok(), "{".$freeze())) {
+                  self.$emit("tLAMBEG", "{".$freeze())
+                } else {
+                  self.$emit("kDO_LAMBDA", "do".$freeze())
+                };
+              } else if ($eqeq(self.$tok(), "{".$freeze())) {
+                self.$emit("tLCURLY", "{".$freeze())
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((380)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "unterminated_unicode", nil, self.$range($rb_minus(p, 1), p));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_266 = self.escape))) {
-              return $ret_or_266
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((119)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "escape_eof", nil, self.$range($rb_minus(p, 1), p));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_267 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                self.$emit_do()
+              };
+              if ($eqeq(self.$tok(), "{".$freeze())) {
+                self.paren_nest = $rb_plus(self.paren_nest, 1)
+              };
+              self.command_start = true;
+              self.cs = 802;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(509, $ret_or_1)) {
+              
+              
+              current_literal = self.$literal();
+              if ($truthy(current_literal)) {
+                if ($truthy(current_literal.$end_interp_brace_and_try_closing())) {
+                  
+                  if ($truthy(self['$version?'](18, 19))) {
+                    
+                    self.$emit("tRCURLY", "}".$freeze(), $rb_minus(p, 1), p);
+                    self.cond.$lexpop();
+                    self.cmdarg.$lexpop();
+                  } else {
+                    self.$emit("tSTRING_DEND", "}".$freeze(), $rb_minus(p, 1), p)
+                  };
+                  if ($truthy(current_literal.$saved_herebody_s())) {
+                    self.herebody_s = current_literal.$saved_herebody_s()
+                  };
+                  p = $rb_minus(p, 1);
+                  self.cs = self.$next_state_for_literal(current_literal);
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                }
+              };
+              self.paren_nest = $rb_minus(self.paren_nest, 1);;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit_table($$('PUNCTUATION'));
+              if ($truthy($rb_lt(self.version, 24))) {
+                
+                self.cond.$lexpop();
+                self.cmdarg.$lexpop();
               } else {
-                return $ret_or_267
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                
+                self.cond.$pop();
+                self.cmdarg.$pop();
+              };
+              if (($eqeq(self.$tok(), "}".$freeze()) || ($eqeq(self.$tok(), "]".$freeze())))) {
+                if ($truthy($rb_ge(self.version, 25))) {
+                  self.cs = 810
+                } else {
+                  self.cs = 531
+                }
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(61, $ret_or_1)) {
+              
+              
+              self.sharp_s = $rb_minus(p, 1);;
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+            } else if ($eqeqeq(65, $ret_or_1)) {
+              
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.newline_s = p;;
+            } else if ($eqeqeq(222, $ret_or_1)) {
+              
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(237, $ret_or_1)) {
+              
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(249, $ret_or_1)) {
+              
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(271, $ret_or_1)) {
+              
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;;
+            } else if ($eqeqeq(286, $ret_or_1)) {
+              
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(298, $ret_or_1)) {
+              
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(324, $ret_or_1)) {
+              
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(400, $ret_or_1)) {
+              
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(410, $ret_or_1)) {
+              
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(431, $ret_or_1)) {
+              
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(103, $ret_or_1)) {
+              
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(243, $ret_or_1)) {
+              
+              
+              tm = p;;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tFID", self.$tok(self.ts, tm), self.ts, tm);
+              self.cs = self.$arg_or_cmdarg(cmd_state);
+              p = $rb_minus(tm, 1);
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(338, $ret_or_1)) {
+              
+              
+              tm = p;;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1), tm), self.ts, tm);
+              p = $rb_minus(tm, 1);
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(309, $ret_or_1)) {
+              
+              
+              tm = p;;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;;
+            } else if ($eqeqeq(424, $ret_or_1)) {
+              
+              
+              tm = p;;
+              
+              if ($eqeqeq(145, ($ret_or_2 = self.act))) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                if ($eqeq(self.lambda_stack.$last(), self.paren_nest)) {
+                  
+                  self.lambda_stack.$pop();
+                  if ($eqeq(self.$tok(), "{".$freeze())) {
+                    self.$emit("tLAMBEG", "{".$freeze())
+                  } else {
+                    self.$emit("kDO_LAMBDA", "do".$freeze())
+                  };
+                } else if ($eqeq(self.$tok(), "{".$freeze())) {
+                  self.$emit("tLCURLY", "{".$freeze())
+                } else {
+                  self.$emit_do()
+                };
+                if ($eqeq(self.$tok(), "{".$freeze())) {
+                  self.paren_nest = $rb_plus(self.paren_nest, 1)
+                };
+                self.command_start = true;
+                self.cs = 802;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(146, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('KEYWORDS'));
+                self.cs = 352;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(147, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit("kCLASS", "class".$freeze(), self.ts, $rb_plus(self.ts, 5));
+                self.$emit("tLSHFT", "<<".$freeze(), $rb_minus(self.te, 2), self.te);
+                self.cs = 802;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(148, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('KEYWORDS'));
+                self.cs = 563;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(149, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('KEYWORDS'));
+                self.command_start = true;
+                self.cs = 802;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(150, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('KEYWORDS'));
+                self.cs = 539;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(151, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('KEYWORDS'));
+                if (($truthy(self['$version?'](18)) && ($eqeq(self.$tok(), "not".$freeze())))) {
+                  
+                  self.cs = 563;
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  self.cs = 494;
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+              } else if ($eqeqeq(152, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                if ($truthy(self['$version?'](18))) {
+                  
+                  self.$emit("tIDENTIFIER");
+                  if (!($not(self.static_env['$nil?']()) && ($truthy(self.static_env['$declared?'](self.$tok()))))) {
+                    self.cs = self.$arg_or_cmdarg(cmd_state)
+                  };
+                } else {
+                  self.$emit("k__ENCODING__", "__ENCODING__".$freeze())
+                };
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(153, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('KEYWORDS'));
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(154, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                digits = self.$tok(self.num_digits_s, self.num_suffix_s);
+                if ($truthy(digits['$end_with?']("_".$freeze()))) {
+                  self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
+                } else if ((($truthy(digits['$empty?']()) && ($eqeq(self.num_base, 8))) && ($truthy(self['$version?'](18))))) {
+                  digits = "0".$freeze()
+                } else if ($truthy(digits['$empty?']())) {
+                  self.$diagnostic("error", "empty_numeric")
+                } else if (($eqeq(self.num_base, 8) && ($truthy((invalid_idx = digits.$index(/[89]/)))))) {
+                  
+                  invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
+                  self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));
+                };
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  
+                  self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
+                  p = $rb_minus(self.num_suffix_s, 1);
+                } else {
+                  self.num_xfrm.$call(digits.$to_i(self.num_base))
+                };
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(156, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": self.$tok($rb_minus(self.te, 1), self.te)}), self.$range($rb_minus(self.te, 1), self.te))
+                } else {
+                  
+                  self.$emit("tINTEGER", self.$tok(self.ts, $rb_minus(self.te, 1)).$to_i(), self.ts, $rb_minus(self.te, 1));
+                  p = $rb_minus(p, 1);
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+              } else if ($eqeqeq(157, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": self.$tok($rb_minus(self.te, 1), self.te)}), self.$range($rb_minus(self.te, 1), self.te))
+                } else {
+                  
+                  self.$emit("tFLOAT", self.$tok(self.ts, $rb_minus(self.te, 1)).$to_f(), self.ts, $rb_minus(self.te, 1));
+                  p = $rb_minus(p, 1);
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+              } else if ($eqeqeq(158, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                digits = self.$tok(self.ts, self.num_suffix_s);
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  
+                  self.$emit("tFLOAT", self.$Float(digits), self.ts, self.num_suffix_s);
+                  p = $rb_minus(self.num_suffix_s, 1);
+                } else {
+                  self.num_xfrm.$call(digits)
+                };
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(160, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit("tCONSTANT");
+                self.cs = self.$arg_or_cmdarg(cmd_state);
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(164, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit("tIDENTIFIER");
+                if (($not(self.static_env['$nil?']()) && ($truthy(self.static_env['$declared?'](self.$tok()))))) {
+                  
+                  self.cs = 465;
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  self.cs = self.$arg_or_cmdarg(cmd_state);
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+              } else if ($eqeqeq(165, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                if ($eqeq(tm, self.te)) {
+                  self.$emit("tFID")
+                } else {
+                  
+                  self.$emit("tIDENTIFIER", self.$tok(self.ts, tm), self.ts, tm);
+                  p = $rb_minus(tm, 1);
+                };
+                self.cs = 494;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(167, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('PUNCTUATION'));
+                self.cs = 802;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(168, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('PUNCTUATION'));
+                self.cs = 563;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_268 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_268
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_269 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_269
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_270 = (function() {if ($truthy(($ret_or_271 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_271
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_270
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_272 = self.escape))) {
-                return $ret_or_272
+                nil
+              };;
+            } else if ($eqeqeq(244, $ret_or_1)) {
+              
+              
+              tm = $rb_minus(p, 2);;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tFID", self.$tok(self.ts, tm), self.ts, tm);
+              self.cs = self.$arg_or_cmdarg(cmd_state);
+              p = $rb_minus(tm, 1);
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(339, $ret_or_1)) {
+              
+              
+              tm = $rb_minus(p, 2);;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1), tm), self.ts, tm);
+              p = $rb_minus(tm, 1);
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(311, $ret_or_1)) {
+              
+              
+              tm = $rb_minus(p, 2);;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;;
+            } else if ($eqeqeq(425, $ret_or_1)) {
+              
+              
+              tm = $rb_minus(p, 2);;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              if ($eqeq(tm, self.te)) {
+                self.$emit("tFID")
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((150)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "escape_eof", nil, self.$range($rb_minus(p, 1), p));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_273 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                
+                self.$emit("tIDENTIFIER", self.$tok(self.ts, tm), self.ts, tm);
+                p = $rb_minus(tm, 1);
+              };
+              self.cs = 494;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(340, $ret_or_1)) {
+              
+              
+              tm = p;;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1), tm), self.ts, tm);
+              p = $rb_minus(tm, 1);
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(312, $ret_or_1)) {
+              
+              
+              tm = p;;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;;
+            } else if ($eqeqeq(341, $ret_or_1)) {
+              
+              
+              tm = $rb_minus(p, 2);;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1), tm), self.ts, tm);
+              p = $rb_minus(tm, 1);
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(313, $ret_or_1)) {
+              
+              
+              tm = $rb_minus(p, 2);;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;;
+            } else if ($eqeqeq(345, $ret_or_1)) {
+              
+              
+              tm = $rb_minus(p, 2);;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1), tm), self.ts, tm);
+              p = $rb_minus(tm, 1);
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(316, $ret_or_1)) {
+              
+              
+              tm = $rb_minus(p, 2);;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;;
+            } else if ($eqeqeq(344, $ret_or_1)) {
+              
+              
+              tm = $rb_minus(p, 2);;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1), tm), self.ts, tm);
+              p = $rb_minus(tm, 1);
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(315, $ret_or_1)) {
+              
+              
+              tm = $rb_minus(p, 2);;
+              
+              if ($eqeqeq(99, ($ret_or_2 = self.act))) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit("tUNARY_NUM", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
+                p = $rb_minus(p, 1);
+                self.cs = 810;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(106, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$diagnostic("error", "unterminated_heredoc_id", nil, self.$range(self.ts, $rb_plus(self.ts, 1)));
+              } else if ($eqeqeq(117, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                if ($truthy($rb_ge(self.version, 27))) {
+                  
+                  self.$emit("tPIPE", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
+                  p = $rb_minus(p, 1);
+                  self.cs = 563;
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  p = $rb_minus(p, 2);
+                  
+                  self.cs = 810;
+                  _goto_level = _again;
+                  continue;;;
+                };
+              } else if ($eqeqeq(121, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('PUNCTUATION_BEGIN'));
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(122, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit("kRESCUE", "rescue".$freeze(), self.ts, tm);
+                p = $rb_minus(tm, 1);
+                self.cs = 539;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(123, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('KEYWORDS_BEGIN'));
+                self.command_start = true;
+                self.cs = 802;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(127, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                p = $rb_minus(self.ts, 1);
+                
+                self.cs = 810;
+                _goto_level = _again;
+                continue;;;
+              } else if ($eqeqeq(128, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit("tIDENTIFIER");
+                if (($not(self.static_env['$nil?']()) && ($truthy(self.static_env['$declared?'](self.$tok()))))) {
+                  
+                  self.cs = 465;
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  self.cs = self.$arg_or_cmdarg(cmd_state);
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+              } else if ($eqeqeq(132, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                p = $rb_minus(self.ts, 1);
+                
+                self.cs = 810;
+                _goto_level = _again;
+                continue;;;
               } else {
-                return $ret_or_273
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                nil
+              };;
+            } else if ($eqeqeq(342, $ret_or_1)) {
+              
+              
+              tm = $rb_minus(p, 3);;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1), tm), self.ts, tm);
+              p = $rb_minus(tm, 1);
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(314, $ret_or_1)) {
+              
+              
+              tm = $rb_minus(p, 3);;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;;
+            } else if ($eqeqeq(343, $ret_or_1)) {
+              
+              
+              tm = $rb_minus(p, 2);;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1), tm), self.ts, tm);
+              p = $rb_minus(tm, 1);
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(490, $ret_or_1)) {
+              
+              
+              tm = $rb_minus(p, 2);;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tCONSTANT", self.$tok(self.ts, tm), self.ts, tm);
+              p = $rb_minus(tm, 1);
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(267, $ret_or_1)) {
+              
+              
+              self.cond.$push(false);
+              self.cmdarg.$push(false);
+              self.paren_nest = $rb_plus(self.paren_nest, 1);;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tLBRACK", "[".$freeze(), $rb_minus(self.te, 1), self.te);
+              self.cs = 563;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(386, $ret_or_1)) {
+              
+              
+              self.cond.$push(false);
+              self.cmdarg.$push(false);
+              self.paren_nest = $rb_plus(self.paren_nest, 1);;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tLBRACK", "[".$freeze());
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(493, $ret_or_1)) {
+              
+              
+              self.cond.$push(false);
+              self.cmdarg.$push(false);
+              self.paren_nest = $rb_plus(self.paren_nest, 1);;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tLBRACK2", "[".$freeze());
+              self.cs = 563;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(496, $ret_or_1)) {
+              
+              
+              self.paren_nest = $rb_minus(self.paren_nest, 1);;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit_table($$('PUNCTUATION'));
+              if ($truthy($rb_lt(self.version, 24))) {
+                
+                self.cond.$lexpop();
+                self.cmdarg.$lexpop();
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_274 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_274
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_275 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_275
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_276 = (function() {if ($truthy(($ret_or_277 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_277
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_276
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_278 = self.escape))) {
-                return $ret_or_278
+                
+                self.cond.$pop();
+                self.cmdarg.$pop();
+              };
+              if (($eqeq(self.$tok(), "}".$freeze()) || ($eqeq(self.$tok(), "]".$freeze())))) {
+                if ($truthy($rb_ge(self.version, 25))) {
+                  self.cs = 810
+                } else {
+                  self.cs = 531
+                }
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(259, $ret_or_1)) {
+              
+              
+              self.cond.$push(false);
+              self.cmdarg.$push(false);
+              self.paren_nest = $rb_plus(self.paren_nest, 1);
+              if ($truthy(self['$version?'](18))) {
+                self.command_start = true
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              if ($truthy(self['$version?'](18))) {
+                
+                self.$emit("tLPAREN2", "(".$freeze(), $rb_minus(self.te, 1), self.te);
+                self.cs = 802;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((364)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "escape_eof", nil, self.$range($rb_minus(p, 1), p));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_279 = self.escape))) {
-              return $ret_or_279
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((177)['$===']($case)) {
-            
-            self.escape_s = p;
-            self.escape = nil;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_280 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                
+                self.$emit("tLPAREN_ARG", "(".$freeze(), $rb_minus(self.te, 1), self.te);
+                self.cs = 563;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              };;;
+            } else if ($eqeqeq(272, $ret_or_1)) {
+              
+              
+              self.cond.$push(false);
+              self.cmdarg.$push(false);
+              self.paren_nest = $rb_plus(self.paren_nest, 1);
+              if ($truthy(self['$version?'](18))) {
+                self.command_start = true
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tLPAREN2", "(".$freeze());
+              self.cs = 563;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(280, $ret_or_1)) {
+              
+              
+              self.cond.$push(false);
+              self.cmdarg.$push(false);
+              self.paren_nest = $rb_plus(self.paren_nest, 1);
+              if ($truthy(self['$version?'](18))) {
+                self.command_start = true
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tLPAREN_ARG", "(".$freeze(), $rb_minus(self.te, 1), self.te);
+              if ($truthy(self['$version?'](18))) {
+                
+                self.cs = 802;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
               } else {
-                return $ret_or_280
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                
+                self.cs = 563;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              };;;
+            } else if ($eqeqeq(328, $ret_or_1)) {
+              
+              
+              self.cond.$push(false);
+              self.cmdarg.$push(false);
+              self.paren_nest = $rb_plus(self.paren_nest, 1);
+              if ($truthy(self['$version?'](18))) {
+                self.command_start = true
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tLPAREN", "(".$freeze());
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(437, $ret_or_1)) {
+              
+              
+              self.cond.$push(false);
+              self.cmdarg.$push(false);
+              self.paren_nest = $rb_plus(self.paren_nest, 1);
+              if ($truthy(self['$version?'](18))) {
+                self.command_start = true
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit_table($$('PUNCTUATION'));
+              self.cs = 563;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(438, $ret_or_1)) {
+              
+              
+              self.paren_nest = $rb_minus(self.paren_nest, 1);;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit_table($$('PUNCTUATION'));
+              if ($truthy($rb_lt(self.version, 24))) {
+                
+                self.cond.$lexpop();
+                self.cmdarg.$lexpop();
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_281 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_281
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_282 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_282
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_283 = (function() {if ($truthy(($ret_or_284 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_284
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_283
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_285 = self.escape))) {
-                return $ret_or_285
+                
+                self.cond.$pop();
+                self.cmdarg.$pop();
+              };
+              if (($eqeq(self.$tok(), "}".$freeze()) || ($eqeq(self.$tok(), "]".$freeze())))) {
+                if ($truthy($rb_ge(self.version, 25))) {
+                  self.cs = 810
+                } else {
+                  self.cs = 531
+                }
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(72, $ret_or_1)) {
+              
+              
+              heredoc_e = p;;
+              
+              self.newline_s = p;;
+            } else if ($eqeqeq(353, $ret_or_1)) {
+              
+              
+              new_herebody_s = p;;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$tok(self.ts, heredoc_e)['$=~'](/^<<(-?)(~?)(["'`]?)(.*)\3$/m);
+              indent = ($truthy(($ret_or_2 = (($b = $gvars['~']) === nil ? nil : $b['$[]'](1))['$empty?']()['$!']())) ? ($ret_or_2) : ((($b = $gvars['~']) === nil ? nil : $b['$[]'](2))['$empty?']()['$!']()));
+              dedent_body = (($b = $gvars['~']) === nil ? nil : $b['$[]'](2))['$empty?']()['$!']();
+              type = ($truthy((($b = $gvars['~']) === nil ? nil : $b['$[]'](3))['$empty?']()) ? ("<<\"".$freeze()) : ($rb_plus("<<".$freeze(), (($b = $gvars['~']) === nil ? nil : $b['$[]'](3)))));
+              delimiter = (($b = $gvars['~']) === nil ? nil : $b['$[]'](4));
+              if ($truthy($rb_ge(self.version, 27))) {
+                if (($truthy($rb_gt(delimiter.$count("\n"), 0)) || ($truthy($rb_gt(delimiter.$count("\r"), 0))))) {
+                  self.$diagnostic("error", "unterminated_heredoc_id", nil, self.$range(self.ts, $rb_plus(self.ts, 1)))
+                }
+              } else if ($truthy($rb_ge(self.version, 24))) {
+                if ($truthy($rb_gt(delimiter.$count("\n"), 0))) {
+                  if ($truthy(delimiter['$end_with?']("\n"))) {
+                    
+                    self.$diagnostic("warning", "heredoc_id_ends_with_nl", nil, self.$range(self.ts, $rb_plus(self.ts, 1)));
+                    delimiter = delimiter.$rstrip();
+                  } else {
+                    self.$diagnostic("fatal", "heredoc_id_has_newline", nil, self.$range(self.ts, $rb_plus(self.ts, 1)))
+                  }
+                }
+              };
+              if (($truthy(dedent_body) && ($truthy(self['$version?'](18, 19, 20, 21, 22))))) {
+                
+                self.$emit("tLSHFT", "<<".$freeze(), self.ts, $rb_plus(self.ts, 2));
+                p = $rb_plus(self.ts, 1);
+                self.cs = 563;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((182)['$===']($case)) {
-            
-            self.escape_s = p;
-            self.escape = nil;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_286 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                
+                self.cs = self.$push_literal(type, delimiter, self.ts, heredoc_e, indent, dedent_body);
+                self.herebody_s = ($truthy(($ret_or_2 = self.herebody_s)) ? ($ret_or_2) : (new_herebody_s));
+                p = $rb_minus(self.herebody_s, 1);
+              };;;
+            } else if ($eqeqeq(348, $ret_or_1)) {
+              
+              
+              tm = $rb_minus(p, 1);
+              diag_msg = "ivar_name";;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              if ($truthy($rb_ge(self.version, 27))) {
+                self.$diagnostic("error", diag_msg, $hash2(["name"], {"name": self.$tok(tm, self.te)}), self.$range(tm, self.te))
               } else {
-                return $ret_or_286
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                
+                self.$emit("tCOLON", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
+                p = self.ts;
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(351, $ret_or_1)) {
+              
+              
+              tm = $rb_minus(p, 2);
+              diag_msg = "cvar_name";;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              if ($truthy($rb_ge(self.version, 27))) {
+                self.$diagnostic("error", diag_msg, $hash2(["name"], {"name": self.$tok(tm, self.te)}), self.$range(tm, self.te))
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_287 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_287
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_288 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_288
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_289 = (function() {if ($truthy(($ret_or_290 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_290
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_289
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_291 = self.escape))) {
-                return $ret_or_291
+                
+                self.$emit("tCOLON", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
+                p = self.ts;
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(359, $ret_or_1)) {
+              
+              
+              self.escape = nil;;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((58)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(389, $ret_or_1)) {
+              
+              
+              tm = p;;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("kRESCUE", "rescue".$freeze(), self.ts, tm);
+              p = $rb_minus(tm, 1);
+              self.cs = 539;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(480, $ret_or_1)) {
+              
+              
+              self.num_base = 16;
+              self.num_digits_s = p;;
+              
+              self.num_suffix_s = p;;
+            } else if ($eqeqeq(474, $ret_or_1)) {
+              
+              
+              self.num_base = 10;
+              self.num_digits_s = p;;
+              
+              self.num_suffix_s = p;;
+            } else if ($eqeqeq(477, $ret_or_1)) {
+              
+              
+              self.num_base = 8;
+              self.num_digits_s = p;;
+              
+              self.num_suffix_s = p;;
+            } else if ($eqeqeq(471, $ret_or_1)) {
+              
+              
+              self.num_base = 2;
+              self.num_digits_s = p;;
+              
+              self.num_suffix_s = p;;
+            } else if ($eqeqeq(486, $ret_or_1)) {
+              
+              
+              self.num_base = 10;
+              self.num_digits_s = self.ts;;
+              
+              self.num_suffix_s = p;;
+            } else if ($eqeqeq(449, $ret_or_1)) {
+              
+              
+              self.num_base = 8;
+              self.num_digits_s = self.ts;;
+              
+              self.num_suffix_s = p;;
+            } else if ($eqeqeq(487, $ret_or_1)) {
+              
+              
+              self.num_suffix_s = p;;
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$17(chars){var self = $$17.$$s == null ? this : $$17.$$s;
+
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tINTEGER", chars);}, {$$arity: 1, $$s: self});;
+            } else if ($eqeqeq(8, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.newline_s = p;;
+            } else if ($eqeqeq(453, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.num_suffix_s = p;;
+            } else if ($eqeqeq(228, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.act = 43;;
+            } else if ($eqeqeq(215, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.act = 44;;
+            } else if ($eqeqeq(211, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.act = 45;;
+            } else if ($eqeqeq(27, $ret_or_1)) {
+              
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.newline_s = p;;}
-            else if ((31)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
+              self.te = $rb_plus(p, 1);;
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            tm = p;;}
-            else if ((33)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
+              self.act = 72;;
+            } else if ($eqeqeq(261, $ret_or_1)) {
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            tm = p;;}
-            else if ((35)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            tm = p;;}
-            else if ((219)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
+              self.te = $rb_plus(p, 1);;
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((238)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
+              self.act = 73;;
+            } else if ($eqeqeq(28, $ret_or_1)) {
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((246)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((34)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
+              self.te = $rb_plus(p, 1);;
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;;}
-            else if ((277)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
+              self.act = 78;;
+            } else if ($eqeqeq(254, $ret_or_1)) {
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((269)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;;}
-            else if ((288)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
+              self.te = $rb_plus(p, 1);;
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((300)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
+              self.act = 79;;
+            } else if ($eqeqeq(281, $ret_or_1)) {
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((296)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;;}
-            else if ((59)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
+              self.te = $rb_plus(p, 1);;
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit("tUNARY_NUM", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
-            p = $rb_minus(p, 1);
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((50)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
+              self.act = 85;;
+            } else if ($eqeqeq(46, $ret_or_1)) {
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit("tIDENTIFIER", ident_tok, ident_ts, ident_te);
-            p = $rb_minus(ident_te, 1);
-            if ($truthy((function() {if ($truthy(($ret_or_292 = (function() {if ($truthy(($ret_or_293 = self.static_env['$nil?']()['$!']()))) {
-              return self.static_env['$declared?'](ident_tok)
-            } else {
-              return $ret_or_293
-            }; return nil; })()))) {
-              return $rb_lt(self.version, 25)
-            } else {
-              return $ret_or_292
-            }; return nil; })())) {
-              self.cs = 465
-            } else {
-              self.cs = 525
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((318)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((402)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
+              self.te = $rb_plus(p, 1);;
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((398)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
+              self.act = 86;;
+            } else if ($eqeqeq(302, $ret_or_1)) {
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            if ($truthy(self.context.$in_kwarg())) {
               
-              p = $rb_minus(p, 1);
+              self.te = $rb_plus(p, 1);;
               
-              self.cs = 810;
-              _goto_level = _again;
-              continue;;;
-            } else {
+              self.act = 93;;
+            } else if ($eqeqeq(291, $ret_or_1)) {
               
-              self.cs = 186;
-              _goto_level = _again;
-              continue;;
-            };;;}
-            else if ((411)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((408)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
+              self.te = $rb_plus(p, 1);;
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            
-            self.cs = 186;
-            _goto_level = _again;
-            continue;;;;;}
-            else if ((495)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
+              self.act = 94;;
+            } else if ($eqeqeq(70, $ret_or_1)) {
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((427)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            
-            self.cs = 990;
-            _goto_level = _again;
-            continue;;;;;}
-            else if ((101)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
+              self.te = $rb_plus(p, 1);;
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((268)['$===']($case)) {
-            
-            self.cond.$push(false);
-            self.cmdarg.$push(false);
-            current_literal = self.$literal();
-            if ($truthy(current_literal)) {
-              current_literal.$start_interp_brace()};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            if (self.lambda_stack.$last()['$=='](self.paren_nest)) {
+              self.act = 106;;
+            } else if ($eqeqeq(394, $ret_or_1)) {
               
-              self.lambda_stack.$pop();
-              self.$emit("tLAMBEG", "{".$freeze(), $rb_minus(self.te, 1), self.te);
-            } else {
-              self.$emit("tLCURLY", "{".$freeze(), $rb_minus(self.te, 1), self.te)
-            };
-            self.command_start = true;
-            self.paren_nest = $rb_plus(self.paren_nest, 1);
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((290)['$===']($case)) {
-            
-            self.cond.$push(false);
-            self.cmdarg.$push(false);
-            current_literal = self.$literal();
-            if ($truthy(current_literal)) {
-              current_literal.$start_interp_brace()};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            if (self.lambda_stack.$last()['$=='](self.paren_nest)) {
               
-              self.lambda_stack.$pop();
-              self.$emit("tLAMBEG", "{".$freeze());
-            } else {
-              self.$emit("tLBRACE_ARG", "{".$freeze())
-            };
-            self.paren_nest = $rb_plus(self.paren_nest, 1);
-            self.command_start = true;
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((393)['$===']($case)) {
-            
-            self.cond.$push(false);
-            self.cmdarg.$push(false);
-            current_literal = self.$literal();
-            if ($truthy(current_literal)) {
-              current_literal.$start_interp_brace()};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            if (self.lambda_stack.$last()['$=='](self.paren_nest)) {
+              self.te = $rb_plus(p, 1);;
               
-              self.lambda_stack.$pop();
-              self.command_start = true;
-              self.$emit("tLAMBEG", "{".$freeze());
-            } else {
-              self.$emit("tLBRACE", "{".$freeze())
-            };
-            self.paren_nest = $rb_plus(self.paren_nest, 1);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((508)['$===']($case)) {
-            
-            self.cond.$push(false);
-            self.cmdarg.$push(false);
-            current_literal = self.$literal();
-            if ($truthy(current_literal)) {
-              current_literal.$start_interp_brace()};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            if (self.lambda_stack.$last()['$=='](self.paren_nest)) {
+              self.act = 117;;
+            } else if ($eqeqeq(305, $ret_or_1)) {
               
-              self.lambda_stack.$pop();
-              if (self.$tok()['$==']("{".$freeze())) {
-                self.$emit("tLAMBEG", "{".$freeze())
-              } else {
-                self.$emit("kDO_LAMBDA", "do".$freeze())
-              };
-            } else if (self.$tok()['$==']("{".$freeze())) {
-              self.$emit("tLCURLY", "{".$freeze())
-            } else {
-              self.$emit_do()
-            };
-            if (self.$tok()['$==']("{".$freeze())) {
-              self.paren_nest = $rb_plus(self.paren_nest, 1)};
-            self.command_start = true;
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((509)['$===']($case)) {
-            
-            current_literal = self.$literal();
-            if ($truthy(current_literal)) {
-              if ($truthy(current_literal.$end_interp_brace_and_try_closing())) {
-                
-                if ($truthy(self['$version?'](18, 19))) {
-                  
-                  self.$emit("tRCURLY", "}".$freeze(), $rb_minus(p, 1), p);
-                  self.cond.$lexpop();
-                  self.cmdarg.$lexpop();
-                } else {
-                  self.$emit("tSTRING_DEND", "}".$freeze(), $rb_minus(p, 1), p)
-                };
-                if ($truthy(current_literal.$saved_herebody_s())) {
-                  self.herebody_s = current_literal.$saved_herebody_s()};
-                p = $rb_minus(p, 1);
-                self.cs = self.$next_state_for_literal(current_literal);
-                
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;}};
-            self.paren_nest = $rb_minus(self.paren_nest, 1);;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            if ($truthy($rb_lt(self.version, 24))) {
               
-              self.cond.$lexpop();
-              self.cmdarg.$lexpop();
-            } else {
+              self.te = $rb_plus(p, 1);;
               
-              self.cond.$pop();
-              self.cmdarg.$pop();
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_294 = self.$tok()['$==']("}".$freeze())))) {
-              return $ret_or_294
-            } else {
-              return self.$tok()['$==']("]".$freeze())
-            }; return nil; })())) {
-              if ($truthy($rb_ge(self.version, 25))) {
-                self.cs = 810
-              } else {
-                self.cs = 531
-              }};
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((61)['$===']($case)) {
-            
-            self.sharp_s = $rb_minus(p, 1);;
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;}
-            else if ((65)['$===']($case)) {
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.newline_s = p;;}
-            else if ((222)['$===']($case)) {
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((237)['$===']($case)) {
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((249)['$===']($case)) {
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((271)['$===']($case)) {
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;;}
-            else if ((286)['$===']($case)) {
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((298)['$===']($case)) {
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((324)['$===']($case)) {
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((400)['$===']($case)) {
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((410)['$===']($case)) {
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((431)['$===']($case)) {
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((103)['$===']($case)) {
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((243)['$===']($case)) {
-            
-            tm = p;;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tFID", self.$tok(self.ts, tm), self.ts, tm);
-            self.cs = self.$arg_or_cmdarg(cmd_state);
-            p = $rb_minus(tm, 1);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((338)['$===']($case)) {
-            
-            tm = p;;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1), tm), self.ts, tm);
-            p = $rb_minus(tm, 1);
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((309)['$===']($case)) {
-            
-            tm = p;;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;;}
-            else if ((424)['$===']($case)) {
-            
-            tm = p;;
-            
-            $case = self.act;
-            if ((145)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            if (self.lambda_stack.$last()['$=='](self.paren_nest)) {
+              self.act = 121;;
+            } else if ($eqeqeq(388, $ret_or_1)) {
               
-              self.lambda_stack.$pop();
-              if (self.$tok()['$==']("{".$freeze())) {
-                self.$emit("tLAMBEG", "{".$freeze())
-              } else {
-                self.$emit("kDO_LAMBDA", "do".$freeze())
-              };
-            } else if (self.$tok()['$==']("{".$freeze())) {
-              self.$emit("tLCURLY", "{".$freeze())
-            } else {
-              self.$emit_do()
-            };
-            if (self.$tok()['$==']("{".$freeze())) {
-              self.paren_nest = $rb_plus(self.paren_nest, 1)};
-            self.command_start = true;
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((146)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'KEYWORDS'));
-            self.cs = 352;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((147)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit("kCLASS", "class".$freeze(), self.ts, $rb_plus(self.ts, 5));
-            self.$emit("tLSHFT", "<<".$freeze(), $rb_minus(self.te, 2), self.te);
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((148)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'KEYWORDS'));
-            self.cs = 563;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((149)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'KEYWORDS'));
-            self.command_start = true;
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((150)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'KEYWORDS'));
-            self.cs = 539;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((151)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'KEYWORDS'));
-            if ($truthy((function() {if ($truthy(($ret_or_295 = self['$version?'](18)))) {
-              return self.$tok()['$==']("not".$freeze())
-            } else {
-              return $ret_or_295
-            }; return nil; })())) {
               
-              self.cs = 563;
+              self.te = $rb_plus(p, 1);;
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
+              self.act = 122;;
+            } else if ($eqeqeq(387, $ret_or_1)) {
               
-              self.cs = 494;
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            };}
-            else if ((152)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            if ($truthy(self['$version?'](18))) {
+              self.te = $rb_plus(p, 1);;
               
-              self.$emit("tIDENTIFIER");
-              if ($truthy((function() {if ($truthy(($ret_or_296 = self.static_env['$nil?']()['$!']()))) {
-                return self.static_env['$declared?'](self.$tok())
-              } else {
-                return $ret_or_296
-              }; return nil; })())) {
-              } else {
-                self.cs = self.$arg_or_cmdarg(cmd_state)
-              };
-            } else {
-              self.$emit("k__ENCODING__", "__ENCODING__".$freeze())
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((153)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'KEYWORDS'));
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((154)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            digits = self.$tok(self.num_digits_s, self.num_suffix_s);
-            if ($truthy(digits['$end_with?']("_".$freeze()))) {
-              self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
-            } else if ($truthy((function() {if ($truthy(($ret_or_297 = (function() {if ($truthy(($ret_or_298 = digits['$empty?']()))) {
-              return self.num_base['$=='](8)
-            } else {
-              return $ret_or_298
-            }; return nil; })()))) {
-              return self['$version?'](18)
-            } else {
-              return $ret_or_297
-            }; return nil; })())) {
-              digits = "0".$freeze()
-            } else if ($truthy(digits['$empty?']())) {
-              self.$diagnostic("error", "empty_numeric")
-            } else if ($truthy((function() {if ($truthy(($ret_or_299 = self.num_base['$=='](8)))) {
-              
-              return (invalid_idx = digits.$index(/[89]/));
-            } else {
-              return $ret_or_299
-            }; return nil; })())) {
+              self.act = 123;;
+            } else if ($eqeqeq(75, $ret_or_1)) {
               
-              invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
-              self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));};
-            if ($truthy(self['$version?'](18, 19, 20))) {
               
-              self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits.$to_i(self.num_base))
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((156)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            if ($truthy(self['$version?'](18, 19, 20))) {
-              self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": self.$tok($rb_minus(self.te, 1), self.te)}), self.$range($rb_minus(self.te, 1), self.te))
-            } else {
+              self.te = $rb_plus(p, 1);;
               
-              self.$emit("tINTEGER", self.$tok(self.ts, $rb_minus(self.te, 1)).$to_i(), self.ts, $rb_minus(self.te, 1));
-              p = $rb_minus(p, 1);
+              self.act = 127;;
+            } else if ($eqeqeq(303, $ret_or_1)) {
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            };}
-            else if ((157)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            if ($truthy(self['$version?'](18, 19, 20))) {
-              self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": self.$tok($rb_minus(self.te, 1), self.te)}), self.$range($rb_minus(self.te, 1), self.te))
-            } else {
               
-              self.$emit("tFLOAT", self.$tok(self.ts, $rb_minus(self.te, 1)).$to_f(), self.ts, $rb_minus(self.te, 1));
-              p = $rb_minus(p, 1);
+              self.te = $rb_plus(p, 1);;
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            };}
-            else if ((158)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            digits = self.$tok(self.ts, self.num_suffix_s);
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              self.act = 128;;
+            } else if ($eqeqeq(306, $ret_or_1)) {
               
-              self.$emit("tFLOAT", self.$Float(digits), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits)
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((160)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit("tCONSTANT");
-            self.cs = self.$arg_or_cmdarg(cmd_state);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((164)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit("tIDENTIFIER");
-            if ($truthy((function() {if ($truthy(($ret_or_300 = self.static_env['$nil?']()['$!']()))) {
-              return self.static_env['$declared?'](self.$tok())
-            } else {
-              return $ret_or_300
-            }; return nil; })())) {
               
-              self.cs = 465;
+              self.te = $rb_plus(p, 1);;
+              
+              self.act = 132;;
+            } else if ($eqeqeq(504, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.act = 145;;
+            } else if ($eqeqeq(499, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.act = 146;;
+            } else if ($eqeqeq(507, $ret_or_1)) {
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
               
-              self.cs = self.$arg_or_cmdarg(cmd_state);
+              self.te = $rb_plus(p, 1);;
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            };}
-            else if ((165)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            if (tm['$=='](self.te)) {
-              self.$emit("tFID")
-            } else {
+              self.act = 148;;
+            } else if ($eqeqeq(500, $ret_or_1)) {
               
-              self.$emit("tIDENTIFIER", self.$tok(self.ts, tm), self.ts, tm);
-              p = $rb_minus(tm, 1);
-            };
-            self.cs = 494;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((167)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((168)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            self.cs = 563;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;};;}
-            else if ((244)['$===']($case)) {
-            
-            tm = $rb_minus(p, 2);;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tFID", self.$tok(self.ts, tm), self.ts, tm);
-            self.cs = self.$arg_or_cmdarg(cmd_state);
-            p = $rb_minus(tm, 1);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((339)['$===']($case)) {
-            
-            tm = $rb_minus(p, 2);;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1), tm), self.ts, tm);
-            p = $rb_minus(tm, 1);
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((311)['$===']($case)) {
-            
-            tm = $rb_minus(p, 2);;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;;}
-            else if ((425)['$===']($case)) {
-            
-            tm = $rb_minus(p, 2);;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            if (tm['$=='](self.te)) {
-              self.$emit("tFID")
-            } else {
               
-              self.$emit("tIDENTIFIER", self.$tok(self.ts, tm), self.ts, tm);
-              p = $rb_minus(tm, 1);
-            };
-            self.cs = 494;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((340)['$===']($case)) {
-            
-            tm = p;;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1), tm), self.ts, tm);
-            p = $rb_minus(tm, 1);
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((312)['$===']($case)) {
-            
-            tm = p;;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;;}
-            else if ((341)['$===']($case)) {
-            
-            tm = $rb_minus(p, 2);;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1), tm), self.ts, tm);
-            p = $rb_minus(tm, 1);
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((313)['$===']($case)) {
-            
-            tm = $rb_minus(p, 2);;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;;}
-            else if ((345)['$===']($case)) {
-            
-            tm = $rb_minus(p, 2);;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1), tm), self.ts, tm);
-            p = $rb_minus(tm, 1);
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((316)['$===']($case)) {
-            
-            tm = $rb_minus(p, 2);;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;;}
-            else if ((344)['$===']($case)) {
-            
-            tm = $rb_minus(p, 2);;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1), tm), self.ts, tm);
-            p = $rb_minus(tm, 1);
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((315)['$===']($case)) {
-            
-            tm = $rb_minus(p, 2);;
-            
-            $case = self.act;
-            if ((99)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit("tUNARY_NUM", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
-            p = $rb_minus(p, 1);
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((106)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$diagnostic("error", "unterminated_heredoc_id", nil, self.$range(self.ts, $rb_plus(self.ts, 1)));}
-            else if ((117)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            if ($truthy($rb_ge(self.version, 27))) {
+              self.te = $rb_plus(p, 1);;
               
-              self.$emit("tPIPE", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
-              p = $rb_minus(p, 1);
-              self.cs = 563;
+              self.act = 149;;
+            } else if ($eqeqeq(501, $ret_or_1)) {
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
               
-              p = $rb_minus(p, 2);
+              self.te = $rb_plus(p, 1);;
               
-              self.cs = 810;
-              _goto_level = _again;
-              continue;;;
-            };}
-            else if ((121)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'PUNCTUATION_BEGIN'));
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((122)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit("kRESCUE", "rescue".$freeze(), self.ts, tm);
-            p = $rb_minus(tm, 1);
-            self.cs = 539;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((123)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'KEYWORDS_BEGIN'));
-            self.command_start = true;
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((127)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;}
-            else if ((128)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit("tIDENTIFIER");
-            if ($truthy((function() {if ($truthy(($ret_or_301 = self.static_env['$nil?']()['$!']()))) {
-              return self.static_env['$declared?'](self.$tok())
-            } else {
-              return $ret_or_301
-            }; return nil; })())) {
+              self.act = 150;;
+            } else if ($eqeqeq(506, $ret_or_1)) {
               
-              self.cs = 465;
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
+              self.te = $rb_plus(p, 1);;
               
-              self.cs = self.$arg_or_cmdarg(cmd_state);
+              self.act = 151;;
+            } else if ($eqeqeq(498, $ret_or_1)) {
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            };}
-            else if ((132)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;};;}
-            else if ((342)['$===']($case)) {
-            
-            tm = $rb_minus(p, 3);;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1), tm), self.ts, tm);
-            p = $rb_minus(tm, 1);
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((314)['$===']($case)) {
-            
-            tm = $rb_minus(p, 3);;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;;}
-            else if ((343)['$===']($case)) {
-            
-            tm = $rb_minus(p, 2);;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1), tm), self.ts, tm);
-            p = $rb_minus(tm, 1);
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((490)['$===']($case)) {
-            
-            tm = $rb_minus(p, 2);;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tCONSTANT", self.$tok(self.ts, tm), self.ts, tm);
-            p = $rb_minus(tm, 1);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((267)['$===']($case)) {
-            
-            self.cond.$push(false);
-            self.cmdarg.$push(false);
-            self.paren_nest = $rb_plus(self.paren_nest, 1);;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tLBRACK", "[".$freeze(), $rb_minus(self.te, 1), self.te);
-            self.cs = 563;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((386)['$===']($case)) {
-            
-            self.cond.$push(false);
-            self.cmdarg.$push(false);
-            self.paren_nest = $rb_plus(self.paren_nest, 1);;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tLBRACK", "[".$freeze());
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((493)['$===']($case)) {
-            
-            self.cond.$push(false);
-            self.cmdarg.$push(false);
-            self.paren_nest = $rb_plus(self.paren_nest, 1);;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tLBRACK2", "[".$freeze());
-            self.cs = 563;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((496)['$===']($case)) {
-            
-            self.paren_nest = $rb_minus(self.paren_nest, 1);;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            if ($truthy($rb_lt(self.version, 24))) {
               
-              self.cond.$lexpop();
-              self.cmdarg.$lexpop();
-            } else {
+              self.te = $rb_plus(p, 1);;
               
-              self.cond.$pop();
-              self.cmdarg.$pop();
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_302 = self.$tok()['$==']("}".$freeze())))) {
-              return $ret_or_302
-            } else {
-              return self.$tok()['$==']("]".$freeze())
-            }; return nil; })())) {
-              if ($truthy($rb_ge(self.version, 25))) {
-                self.cs = 810
-              } else {
-                self.cs = 531
-              }};
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((259)['$===']($case)) {
-            
-            self.cond.$push(false);
-            self.cmdarg.$push(false);
-            self.paren_nest = $rb_plus(self.paren_nest, 1);
-            if ($truthy(self['$version?'](18))) {
-              self.command_start = true};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            if ($truthy(self['$version?'](18))) {
+              self.act = 152;;
+            } else if ($eqeqeq(492, $ret_or_1)) {
               
-              self.$emit("tLPAREN2", "(".$freeze(), $rb_minus(self.te, 1), self.te);
-              self.cs = 802;
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
+              self.te = $rb_plus(p, 1);;
               
-              self.$emit("tLPAREN_ARG", "(".$freeze(), $rb_minus(self.te, 1), self.te);
-              self.cs = 563;
+              self.act = 153;;
+            } else if ($eqeqeq(418, $ret_or_1)) {
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            };;;}
-            else if ((272)['$===']($case)) {
-            
-            self.cond.$push(false);
-            self.cmdarg.$push(false);
-            self.paren_nest = $rb_plus(self.paren_nest, 1);
-            if ($truthy(self['$version?'](18))) {
-              self.command_start = true};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tLPAREN2", "(".$freeze());
-            self.cs = 563;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((280)['$===']($case)) {
-            
-            self.cond.$push(false);
-            self.cmdarg.$push(false);
-            self.paren_nest = $rb_plus(self.paren_nest, 1);
-            if ($truthy(self['$version?'](18))) {
-              self.command_start = true};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tLPAREN_ARG", "(".$freeze(), $rb_minus(self.te, 1), self.te);
-            if ($truthy(self['$version?'](18))) {
               
-              self.cs = 802;
+              self.te = $rb_plus(p, 1);;
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
+              self.act = 154;;
+            } else if ($eqeqeq(451, $ret_or_1)) {
               
-              self.cs = 563;
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            };;;}
-            else if ((328)['$===']($case)) {
-            
-            self.cond.$push(false);
-            self.cmdarg.$push(false);
-            self.paren_nest = $rb_plus(self.paren_nest, 1);
-            if ($truthy(self['$version?'](18))) {
-              self.command_start = true};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tLPAREN", "(".$freeze());
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((437)['$===']($case)) {
-            
-            self.cond.$push(false);
-            self.cmdarg.$push(false);
-            self.paren_nest = $rb_plus(self.paren_nest, 1);
-            if ($truthy(self['$version?'](18))) {
-              self.command_start = true};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            self.cs = 563;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((438)['$===']($case)) {
-            
-            self.paren_nest = $rb_minus(self.paren_nest, 1);;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            if ($truthy($rb_lt(self.version, 24))) {
+              self.te = $rb_plus(p, 1);;
               
-              self.cond.$lexpop();
-              self.cmdarg.$lexpop();
-            } else {
+              self.act = 157;;
+            } else if ($eqeqeq(82, $ret_or_1)) {
               
-              self.cond.$pop();
-              self.cmdarg.$pop();
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_303 = self.$tok()['$==']("}".$freeze())))) {
-              return $ret_or_303
-            } else {
-              return self.$tok()['$==']("]".$freeze())
-            }; return nil; })())) {
-              if ($truthy($rb_ge(self.version, 25))) {
-                self.cs = 810
-              } else {
-                self.cs = 531
-              }};
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((72)['$===']($case)) {
-            
-            heredoc_e = p;;
-            
-            self.newline_s = p;;}
-            else if ((353)['$===']($case)) {
-            
-            new_herebody_s = p;;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$tok(self.ts, heredoc_e)['$=~'](/^<<(-?)(~?)(["'`]?)(.*)\3$/m);
-            indent = (function() {if ($truthy(($ret_or_304 = (($b = $gvars['~']) === nil ? nil : $b['$[]'](1))['$empty?']()['$!']()))) {
-              return $ret_or_304
-            } else {
-              return (($b = $gvars['~']) === nil ? nil : $b['$[]'](2))['$empty?']()['$!']()
-            }; return nil; })();
-            dedent_body = (($b = $gvars['~']) === nil ? nil : $b['$[]'](2))['$empty?']()['$!']();
-            type = (function() {if ($truthy((($b = $gvars['~']) === nil ? nil : $b['$[]'](3))['$empty?']())) {
-              return "<<\"".$freeze()
-            } else {
               
-              return $rb_plus("<<".$freeze(), (($b = $gvars['~']) === nil ? nil : $b['$[]'](3)));
-            }; return nil; })();
-            delimiter = (($b = $gvars['~']) === nil ? nil : $b['$[]'](4));
-            if ($truthy($rb_ge(self.version, 27))) {
-              if ($truthy((function() {if ($truthy(($ret_or_305 = $rb_gt(delimiter.$count("\n"), 0)))) {
-                return $ret_or_305
-              } else {
-                return $rb_gt(delimiter.$count("\r"), 0)
-              }; return nil; })())) {
-                self.$diagnostic("error", "unterminated_heredoc_id", nil, self.$range(self.ts, $rb_plus(self.ts, 1)))}
-            } else if ($truthy($rb_ge(self.version, 24))) {
-              if ($truthy($rb_gt(delimiter.$count("\n"), 0))) {
-                if ($truthy(delimiter['$end_with?']("\n"))) {
-                  
-                  self.$diagnostic("warning", "heredoc_id_ends_with_nl", nil, self.$range(self.ts, $rb_plus(self.ts, 1)));
-                  delimiter = delimiter.$rstrip();
-                } else {
-                  self.$diagnostic("fatal", "heredoc_id_has_newline", nil, self.$range(self.ts, $rb_plus(self.ts, 1)))
-                }}};
-            if ($truthy((function() {if ($truthy(($ret_or_306 = dedent_body))) {
-              return self['$version?'](18, 19, 20, 21, 22)
-            } else {
-              return $ret_or_306
-            }; return nil; })())) {
+              self.te = $rb_plus(p, 1);;
               
-              self.$emit("tLSHFT", "<<".$freeze(), self.ts, $rb_plus(self.ts, 2));
-              p = $rb_plus(self.ts, 1);
-              self.cs = 563;
+              self.act = 158;;
+            } else if ($eqeqeq(421, $ret_or_1)) {
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
               
-              self.cs = self.$push_literal(type, delimiter, self.ts, heredoc_e, indent, dedent_body);
-              self.herebody_s = (function() {if ($truthy(($ret_or_307 = self.herebody_s))) {
-                return $ret_or_307
-              } else {
-                return new_herebody_s
-              }; return nil; })();
-              p = $rb_minus(self.herebody_s, 1);
-            };;;}
-            else if ((348)['$===']($case)) {
-            
-            tm = $rb_minus(p, 1);
-            diag_msg = "ivar_name";;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            if ($truthy($rb_ge(self.version, 27))) {
-              self.$diagnostic("error", diag_msg, $hash2(["name"], {"name": self.$tok(tm, self.te)}), self.$range(tm, self.te))
-            } else {
+              self.te = $rb_plus(p, 1);;
               
-              self.$emit("tCOLON", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
-              p = self.ts;
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((351)['$===']($case)) {
-            
-            tm = $rb_minus(p, 2);
-            diag_msg = "cvar_name";;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            if ($truthy($rb_ge(self.version, 27))) {
-              self.$diagnostic("error", diag_msg, $hash2(["name"], {"name": self.$tok(tm, self.te)}), self.$range(tm, self.te))
-            } else {
+              self.act = 160;;
+            } else if ($eqeqeq(412, $ret_or_1)) {
               
-              self.$emit("tCOLON", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
-              p = self.ts;
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((359)['$===']($case)) {
-            
-            self.escape = nil;;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_308 = self.escape))) {
-              return $ret_or_308
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((389)['$===']($case)) {
-            
-            tm = p;;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("kRESCUE", "rescue".$freeze(), self.ts, tm);
-            p = $rb_minus(tm, 1);
-            self.cs = 539;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((480)['$===']($case)) {
-            
-            self.num_base = 16;
-            self.num_digits_s = p;;
-            
-            self.num_suffix_s = p;;}
-            else if ((474)['$===']($case)) {
-            
-            self.num_base = 10;
-            self.num_digits_s = p;;
-            
-            self.num_suffix_s = p;;}
-            else if ((477)['$===']($case)) {
-            
-            self.num_base = 8;
-            self.num_digits_s = p;;
-            
-            self.num_suffix_s = p;;}
-            else if ((471)['$===']($case)) {
-            
-            self.num_base = 2;
-            self.num_digits_s = p;;
-            
-            self.num_suffix_s = p;;}
-            else if ((486)['$===']($case)) {
-            
-            self.num_base = 10;
-            self.num_digits_s = self.ts;;
-            
-            self.num_suffix_s = p;;}
-            else if ((449)['$===']($case)) {
-            
-            self.num_base = 8;
-            self.num_digits_s = self.ts;;
-            
-            self.num_suffix_s = p;;}
-            else if ((487)['$===']($case)) {
-            
-            self.num_suffix_s = p;;
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$27 = function(chars){var self = $$27.$$s == null ? this : $$27.$$s;
-
               
+              self.te = $rb_plus(p, 1);;
               
-              if (chars == null) {
-                chars = nil;
-              };
-              return self.$emit("tINTEGER", chars);}, $$27.$$s = self, $$27.$$arity = 1, $$27));;}
-            else if ((8)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.newline_s = p;;}
-            else if ((453)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.num_suffix_s = p;;}
-            else if ((228)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 43;;}
-            else if ((215)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 44;;}
-            else if ((211)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 45;;}
-            else if ((27)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 72;;}
-            else if ((261)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 73;;}
-            else if ((28)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 78;;}
-            else if ((254)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 79;;}
-            else if ((281)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 85;;}
-            else if ((46)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 86;;}
-            else if ((302)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 93;;}
-            else if ((291)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 94;;}
-            else if ((70)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 106;;}
-            else if ((394)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 117;;}
-            else if ((305)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 121;;}
-            else if ((388)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 122;;}
-            else if ((387)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 123;;}
-            else if ((75)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 127;;}
-            else if ((303)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 128;;}
-            else if ((306)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 132;;}
-            else if ((504)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 145;;}
-            else if ((499)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 146;;}
-            else if ((507)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 148;;}
-            else if ((500)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 149;;}
-            else if ((501)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 150;;}
-            else if ((506)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 151;;}
-            else if ((498)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 152;;}
-            else if ((492)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 153;;}
-            else if ((418)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 154;;}
-            else if ((451)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 157;;}
-            else if ((82)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 158;;}
-            else if ((421)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 160;;}
-            else if ((412)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 164;;}
-            else if ((423)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 165;;}
-            else if ((416)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 167;;}
-            else if ((422)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 168;;}
-            else if ((88)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 181;;}
-            else if ((511)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 185;;}
-            else if ((183)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            if (self.te['$=='](pe)) {
-              self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))};
-            if ($truthy(current_literal['$heredoc?']())) {
+              self.act = 164;;
+            } else if ($eqeqeq(423, $ret_or_1)) {
               
-              line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
-              if ($truthy(self['$version?'](18, 19, 20))) {
-                line = line.$gsub(/\r.*$/, "".$freeze())};
-              if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
-                
-                self.herebody_s = self.te;
-                p = $rb_minus(current_literal.$heredoc_e(), 1);
-                self.cs = self.$pop_literal();
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.act = 165;;
+            } else if ($eqeqeq(416, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.act = 167;;
+            } else if ($eqeqeq(422, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.act = 168;;
+            } else if ($eqeqeq(88, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.act = 181;;
+            } else if ($eqeqeq(511, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.act = 185;;
+            } else if ($eqeqeq(183, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              current_literal = self.$literal();
+              if ($eqeq(self.te, pe)) {
+                self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))
+              };
+              if ($truthy(current_literal['$heredoc?']())) {
                 
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;
+                line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  line = line.$gsub(/\r.*$/, "".$freeze())
+                };
+                if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+                  
+                  self.herebody_s = self.te;
+                  p = $rb_minus(current_literal.$heredoc_e(), 1);
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  current_literal.$infer_indent_level(line);
+                  self.herebody_s = self.te;
+                };
               } else {
                 
-                current_literal.$infer_indent_level(line);
-                self.herebody_s = self.te;
+                if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+                  
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+                if ($truthy(self.herebody_s)) {
+                  
+                  p = $rb_minus(self.herebody_s, 1);
+                  self.herebody_s = nil;
+                };
               };
-            } else {
-              
-              if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
-                
-                self.cs = self.$pop_literal();
-                
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;};
-              if ($truthy(self.herebody_s)) {
+              if (($truthy(current_literal['$words?']()) && ($not(self['$eof_codepoint?'](self.source_pts['$[]'](p)))))) {
+                current_literal.$extend_space(self.ts, self.te)
+              } else {
                 
-                p = $rb_minus(self.herebody_s, 1);
-                self.herebody_s = nil;};
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_309 = current_literal['$words?']()))) {
-              return self['$eof_codepoint?'](self.source_pts['$[]'](p))['$!']()
-            } else {
-              return $ret_or_309
-            }; return nil; })())) {
-              current_literal.$extend_space(self.ts, self.te)
-            } else {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te);
+                current_literal.$flush_string();
+              };;;
               
-              current_literal.$extend_string(self.$tok(), self.ts, self.te);
-              current_literal.$flush_string();
-            };;;
-            
-            self.escape_s = p;
-            self.escape = nil;;}
-            else if ((124)['$===']($case)) {
-            
-            codepoint = self.source_pts['$[]']($rb_minus(p, 1));
-            if ($truthy((function() {if ($truthy(($ret_or_310 = $rb_ge(self.version, 30)))) {
+              self.escape_s = p;
+              self.escape = nil;;
+            } else if ($eqeqeq(124, $ret_or_1)) {
               
-              if ($truthy(($ret_or_311 = codepoint['$=='](117)))) {
-                return $ret_or_311
-              } else {
-                return codepoint['$=='](85)
-              };
-            } else {
-              return $ret_or_310
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};
-            if ($truthy((self.escape = $$($nesting, 'ESCAPES')['$[]'](codepoint))['$nil?']())) {
-              self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))};;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_312 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_312
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
-              } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_313 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_313
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_314 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_314
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_315 = (function() {if ($truthy(($ret_or_316 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_316
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_315
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_317 = self.escape))) {
-                return $ret_or_317
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((155)['$===']($case)) {
-            
-            codepoint = self.source_pts['$[]']($rb_minus(p, 1));
-            if ($truthy((function() {if ($truthy(($ret_or_318 = $rb_ge(self.version, 30)))) {
               
-              if ($truthy(($ret_or_319 = codepoint['$=='](117)))) {
-                return $ret_or_319
-              } else {
-                return codepoint['$=='](85)
+              codepoint = self.source_pts['$[]']($rb_minus(p, 1));
+              if (($truthy($rb_ge(self.version, 30)) && (($eqeq(codepoint, 117) || ($eqeq(codepoint, 85)))))) {
+                self.$diagnostic("fatal", "invalid_escape")
               };
-            } else {
-              return $ret_or_318
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};
-            if ($truthy((self.escape = $$($nesting, 'ESCAPES')['$[]'](codepoint))['$nil?']())) {
-              self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))};;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_320 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_320
-              }; return nil; })())) {
+              if ($truthy((self.escape = $$('ESCAPES')['$[]'](codepoint))['$nil?']())) {
+                self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))
+              };;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_321 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_321
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_322 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_322
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_323 = (function() {if ($truthy(($ret_or_324 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_324
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_323
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_325 = self.escape))) {
-                return $ret_or_325
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((369)['$===']($case)) {
-            
-            codepoint = self.source_pts['$[]']($rb_minus(p, 1));
-            if ($truthy((function() {if ($truthy(($ret_or_326 = $rb_ge(self.version, 30)))) {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(155, $ret_or_1)) {
               
-              if ($truthy(($ret_or_327 = codepoint['$=='](117)))) {
-                return $ret_or_327
-              } else {
-                return codepoint['$=='](85)
-              };
-            } else {
-              return $ret_or_326
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};
-            if ($truthy((self.escape = $$($nesting, 'ESCAPES')['$[]'](codepoint))['$nil?']())) {
-              self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))};;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_328 = self.escape))) {
-              return $ret_or_328
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((131)['$===']($case)) {
-            
-            codepoint = self.source_pts['$[]']($rb_minus(p, 1));
-            if ($truthy((function() {if ($truthy(($ret_or_329 = $rb_ge(self.version, 30)))) {
               
-              if ($truthy(($ret_or_330 = codepoint['$=='](117)))) {
-                return $ret_or_330
-              } else {
-                return codepoint['$=='](85)
+              codepoint = self.source_pts['$[]']($rb_minus(p, 1));
+              if (($truthy($rb_ge(self.version, 30)) && (($eqeq(codepoint, 117) || ($eqeq(codepoint, 85)))))) {
+                self.$diagnostic("fatal", "invalid_escape")
               };
-            } else {
-              return $ret_or_329
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};
-            if ($truthy((self.escape = $$($nesting, 'ESCAPES')['$[]'](codepoint))['$nil?']())) {
-              self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))};;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_331 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_331
-              }; return nil; })())) {
+              if ($truthy((self.escape = $$('ESCAPES')['$[]'](codepoint))['$nil?']())) {
+                self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))
+              };;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_332 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_332
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_333 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_333
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_334 = (function() {if ($truthy(($ret_or_335 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_335
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_334
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_336 = self.escape))) {
-                return $ret_or_336
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((162)['$===']($case)) {
-            
-            codepoint = self.source_pts['$[]']($rb_minus(p, 1));
-            if ($truthy((function() {if ($truthy(($ret_or_337 = $rb_ge(self.version, 30)))) {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(369, $ret_or_1)) {
               
-              if ($truthy(($ret_or_338 = codepoint['$=='](117)))) {
-                return $ret_or_338
-              } else {
-                return codepoint['$=='](85)
+              
+              codepoint = self.source_pts['$[]']($rb_minus(p, 1));
+              if (($truthy($rb_ge(self.version, 30)) && (($eqeq(codepoint, 117) || ($eqeq(codepoint, 85)))))) {
+                self.$diagnostic("fatal", "invalid_escape")
               };
-            } else {
-              return $ret_or_337
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};
-            if ($truthy((self.escape = $$($nesting, 'ESCAPES')['$[]'](codepoint))['$nil?']())) {
-              self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))};;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_339 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_339
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
-              } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_340 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_340
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_341 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_341
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_342 = (function() {if ($truthy(($ret_or_343 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_343
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_342
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_344 = self.escape))) {
-                return $ret_or_344
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((376)['$===']($case)) {
-            
-            codepoint = self.source_pts['$[]']($rb_minus(p, 1));
-            if ($truthy((function() {if ($truthy(($ret_or_345 = $rb_ge(self.version, 30)))) {
+              if ($truthy((self.escape = $$('ESCAPES')['$[]'](codepoint))['$nil?']())) {
+                self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))
+              };;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              if ($truthy(($ret_or_346 = codepoint['$=='](117)))) {
-                return $ret_or_346
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
               } else {
-                return codepoint['$=='](85)
+                self.$emit("tCHARACTER", value)
               };
-            } else {
-              return $ret_or_345
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};
-            if ($truthy((self.escape = $$($nesting, 'ESCAPES')['$[]'](codepoint))['$nil?']())) {
-              self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))};;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_347 = self.escape))) {
-              return $ret_or_347
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((122)['$===']($case)) {
-            
-            self.escape = self.source_buffer.$slice($rb_minus(p, 1)).$chr();
-            if ($truthy((function() {if ($truthy(($ret_or_348 = $rb_ge(self.version, 27)))) {
+              self.cs = 810;
               
-              if ($truthy(($ret_or_349 = $range(0, 8, false)['$include?'](self.escape.$ord())))) {
-                return $ret_or_349
-              } else {
-                return $range(14, 31, false)['$include?'](self.escape.$ord())
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(131, $ret_or_1)) {
+              
+              
+              codepoint = self.source_pts['$[]']($rb_minus(p, 1));
+              if (($truthy($rb_ge(self.version, 30)) && (($eqeq(codepoint, 117) || ($eqeq(codepoint, 85)))))) {
+                self.$diagnostic("fatal", "invalid_escape")
               };
-            } else {
-              return $ret_or_348
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_350 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_350
-              }; return nil; })())) {
+              if ($truthy((self.escape = $$('ESCAPES')['$[]'](codepoint))['$nil?']())) {
+                self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))
+              };;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_351 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_351
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_352 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_352
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_353 = (function() {if ($truthy(($ret_or_354 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_354
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_353
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_355 = self.escape))) {
-                return $ret_or_355
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((153)['$===']($case)) {
-            
-            self.escape = self.source_buffer.$slice($rb_minus(p, 1)).$chr();
-            if ($truthy((function() {if ($truthy(($ret_or_356 = $rb_ge(self.version, 27)))) {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(162, $ret_or_1)) {
               
-              if ($truthy(($ret_or_357 = $range(0, 8, false)['$include?'](self.escape.$ord())))) {
-                return $ret_or_357
-              } else {
-                return $range(14, 31, false)['$include?'](self.escape.$ord())
+              
+              codepoint = self.source_pts['$[]']($rb_minus(p, 1));
+              if (($truthy($rb_ge(self.version, 30)) && (($eqeq(codepoint, 117) || ($eqeq(codepoint, 85)))))) {
+                self.$diagnostic("fatal", "invalid_escape")
               };
-            } else {
-              return $ret_or_356
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_358 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_358
-              }; return nil; })())) {
+              if ($truthy((self.escape = $$('ESCAPES')['$[]'](codepoint))['$nil?']())) {
+                self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))
+              };;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_359 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_359
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_360 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_360
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_361 = (function() {if ($truthy(($ret_or_362 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_362
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_361
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_363 = self.escape))) {
-                return $ret_or_363
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((367)['$===']($case)) {
-            
-            self.escape = self.source_buffer.$slice($rb_minus(p, 1)).$chr();
-            if ($truthy((function() {if ($truthy(($ret_or_364 = $rb_ge(self.version, 27)))) {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(376, $ret_or_1)) {
               
-              if ($truthy(($ret_or_365 = $range(0, 8, false)['$include?'](self.escape.$ord())))) {
-                return $ret_or_365
-              } else {
-                return $range(14, 31, false)['$include?'](self.escape.$ord())
+              
+              codepoint = self.source_pts['$[]']($rb_minus(p, 1));
+              if (($truthy($rb_ge(self.version, 30)) && (($eqeq(codepoint, 117) || ($eqeq(codepoint, 85)))))) {
+                self.$diagnostic("fatal", "invalid_escape")
               };
-            } else {
-              return $ret_or_364
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_366 = self.escape))) {
-              return $ret_or_366
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((130)['$===']($case)) {
-            
-            self.escape = self.source_buffer.$slice($rb_minus(p, 1)).$chr();
-            if ($truthy((function() {if ($truthy(($ret_or_367 = $rb_ge(self.version, 27)))) {
+              if ($truthy((self.escape = $$('ESCAPES')['$[]'](codepoint))['$nil?']())) {
+                self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))
+              };;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              if ($truthy(($ret_or_368 = $range(0, 8, false)['$include?'](self.escape.$ord())))) {
-                return $ret_or_368
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
               } else {
-                return $range(14, 31, false)['$include?'](self.escape.$ord())
+                self.$emit("tCHARACTER", value)
               };
-            } else {
-              return $ret_or_367
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_369 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_369
-              }; return nil; })())) {
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(122, $ret_or_1)) {
+              
+              
+              self.escape = self.source_buffer.$slice($rb_minus(p, 1)).$chr();
+              if (($truthy($rb_ge(self.version, 27)) && (($truthy($range(0, 8, false)['$include?'](self.escape.$ord())) || ($truthy($range(14, 31, false)['$include?'](self.escape.$ord()))))))) {
+                self.$diagnostic("fatal", "invalid_escape")
+              };;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_370 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_370
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_371 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_371
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_372 = (function() {if ($truthy(($ret_or_373 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_373
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_372
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_374 = self.escape))) {
-                return $ret_or_374
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((161)['$===']($case)) {
-            
-            self.escape = self.source_buffer.$slice($rb_minus(p, 1)).$chr();
-            if ($truthy((function() {if ($truthy(($ret_or_375 = $rb_ge(self.version, 27)))) {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(153, $ret_or_1)) {
               
-              if ($truthy(($ret_or_376 = $range(0, 8, false)['$include?'](self.escape.$ord())))) {
-                return $ret_or_376
-              } else {
-                return $range(14, 31, false)['$include?'](self.escape.$ord())
-              };
-            } else {
-              return $ret_or_375
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_377 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_377
-              }; return nil; })())) {
+              
+              self.escape = self.source_buffer.$slice($rb_minus(p, 1)).$chr();
+              if (($truthy($rb_ge(self.version, 27)) && (($truthy($range(0, 8, false)['$include?'](self.escape.$ord())) || ($truthy($range(14, 31, false)['$include?'](self.escape.$ord()))))))) {
+                self.$diagnostic("fatal", "invalid_escape")
+              };;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_378 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_378
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_379 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_379
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_380 = (function() {if ($truthy(($ret_or_381 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_381
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_380
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_382 = self.escape))) {
-                return $ret_or_382
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((375)['$===']($case)) {
-            
-            self.escape = self.source_buffer.$slice($rb_minus(p, 1)).$chr();
-            if ($truthy((function() {if ($truthy(($ret_or_383 = $rb_ge(self.version, 27)))) {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(367, $ret_or_1)) {
+              
               
-              if ($truthy(($ret_or_384 = $range(0, 8, false)['$include?'](self.escape.$ord())))) {
-                return $ret_or_384
+              self.escape = self.source_buffer.$slice($rb_minus(p, 1)).$chr();
+              if (($truthy($rb_ge(self.version, 27)) && (($truthy($range(0, 8, false)['$include?'](self.escape.$ord())) || ($truthy($range(14, 31, false)['$include?'](self.escape.$ord()))))))) {
+                self.$diagnostic("fatal", "invalid_escape")
+              };;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
               } else {
-                return $range(14, 31, false)['$include?'](self.escape.$ord())
+                self.$emit("tCHARACTER", value)
               };
-            } else {
-              return $ret_or_383
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_385 = self.escape))) {
-              return $ret_or_385
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((126)['$===']($case)) {
-            
-            self.escape = "\u007F";;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_386 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_386
-              }; return nil; })())) {
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(130, $ret_or_1)) {
+              
+              
+              self.escape = self.source_buffer.$slice($rb_minus(p, 1)).$chr();
+              if (($truthy($rb_ge(self.version, 27)) && (($truthy($range(0, 8, false)['$include?'](self.escape.$ord())) || ($truthy($range(14, 31, false)['$include?'](self.escape.$ord()))))))) {
+                self.$diagnostic("fatal", "invalid_escape")
+              };;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_387 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_387
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_388 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_388
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_389 = (function() {if ($truthy(($ret_or_390 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_390
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_389
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_391 = self.escape))) {
-                return $ret_or_391
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((157)['$===']($case)) {
-            
-            self.escape = "\u007F";;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_392 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_392
-              }; return nil; })())) {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(161, $ret_or_1)) {
+              
+              
+              self.escape = self.source_buffer.$slice($rb_minus(p, 1)).$chr();
+              if (($truthy($rb_ge(self.version, 27)) && (($truthy($range(0, 8, false)['$include?'](self.escape.$ord())) || ($truthy($range(14, 31, false)['$include?'](self.escape.$ord()))))))) {
+                self.$diagnostic("fatal", "invalid_escape")
+              };;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_393 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_393
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_394 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_394
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_395 = (function() {if ($truthy(($ret_or_396 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_396
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_395
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_397 = self.escape))) {
-                return $ret_or_397
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((371)['$===']($case)) {
-            
-            self.escape = "\u007F";;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_398 = self.escape))) {
-              return $ret_or_398
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((129)['$===']($case)) {
-            
-            self.escape = self.$encode_escape(self.$tok($rb_minus(p, 2), p).$to_i(16));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_399 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(375, $ret_or_1)) {
+              
+              
+              self.escape = self.source_buffer.$slice($rb_minus(p, 1)).$chr();
+              if (($truthy($rb_ge(self.version, 27)) && (($truthy($range(0, 8, false)['$include?'](self.escape.$ord())) || ($truthy($range(14, 31, false)['$include?'](self.escape.$ord()))))))) {
+                self.$diagnostic("fatal", "invalid_escape")
+              };;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
               } else {
-                return $ret_or_399
-              }; return nil; })())) {
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(126, $ret_or_1)) {
+              
+              
+              self.escape = "\u007F";;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_400 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_400
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_401 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_401
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_402 = (function() {if ($truthy(($ret_or_403 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_403
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_402
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_404 = self.escape))) {
-                return $ret_or_404
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((160)['$===']($case)) {
-            
-            self.escape = self.$encode_escape(self.$tok($rb_minus(p, 2), p).$to_i(16));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_405 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_405
-              }; return nil; })())) {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(157, $ret_or_1)) {
+              
+              
+              self.escape = "\u007F";;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_406 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_406
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_407 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_407
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_408 = (function() {if ($truthy(($ret_or_409 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_409
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_408
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_410 = self.escape))) {
-                return $ret_or_410
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((374)['$===']($case)) {
-            
-            self.escape = self.$encode_escape(self.$tok($rb_minus(p, 2), p).$to_i(16));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_411 = self.escape))) {
-              return $ret_or_411
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((136)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(self.escape_s, 1), p));;
-            
-            self.$diagnostic("fatal", "unterminated_unicode", nil, self.$range($rb_minus(p, 1), p));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_412 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(371, $ret_or_1)) {
+              
+              
+              self.escape = "\u007F";;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
               } else {
-                return $ret_or_412
-              }; return nil; })())) {
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(129, $ret_or_1)) {
+              
+              
+              self.escape = self.$encode_escape(self.$tok($rb_minus(p, 2), p).$to_i(16));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_413 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_413
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_414 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_414
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_415 = (function() {if ($truthy(($ret_or_416 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_416
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_415
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_417 = self.escape))) {
-                return $ret_or_417
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(160, $ret_or_1)) {
+              
+              
+              self.escape = self.$encode_escape(self.$tok($rb_minus(p, 2), p).$to_i(16));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((167)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(self.escape_s, 1), p));;
-            
-            self.$diagnostic("fatal", "unterminated_unicode", nil, self.$range($rb_minus(p, 1), p));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_418 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(374, $ret_or_1)) {
+              
+              
+              self.escape = self.$encode_escape(self.$tok($rb_minus(p, 2), p).$to_i(16));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
               } else {
-                return $ret_or_418
-              }; return nil; })())) {
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(136, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(self.escape_s, 1), p));;
+              
+              self.$diagnostic("fatal", "unterminated_unicode", nil, self.$range($rb_minus(p, 1), p));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_419 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_419
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_420 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_420
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_421 = (function() {if ($truthy(($ret_or_422 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_422
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_421
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_423 = self.escape))) {
-                return $ret_or_423
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(167, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(self.escape_s, 1), p));;
+              
+              self.$diagnostic("fatal", "unterminated_unicode", nil, self.$range($rb_minus(p, 1), p));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((381)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(self.escape_s, 1), p));;
-            
-            self.$diagnostic("fatal", "unterminated_unicode", nil, self.$range($rb_minus(p, 1), p));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_424 = self.escape))) {
-              return $ret_or_424
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((116)['$===']($case)) {
-            
-            self.escape_s = p;
-            self.escape = nil;;
-            
-            self.$diagnostic("fatal", "escape_eof", nil, self.$range($rb_minus(p, 1), p));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_425 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(381, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(self.escape_s, 1), p));;
+              
+              self.$diagnostic("fatal", "unterminated_unicode", nil, self.$range($rb_minus(p, 1), p));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
               } else {
-                return $ret_or_425
-              }; return nil; })())) {
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(116, $ret_or_1)) {
+              
+              
+              self.escape_s = p;
+              self.escape = nil;;
+              
+              self.$diagnostic("fatal", "escape_eof", nil, self.$range($rb_minus(p, 1), p));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_426 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_426
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_427 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_427
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_428 = (function() {if ($truthy(($ret_or_429 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_429
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_428
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_430 = self.escape))) {
-                return $ret_or_430
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(148, $ret_or_1)) {
+              
+              
+              self.escape_s = p;
+              self.escape = nil;;
+              
+              self.$diagnostic("fatal", "escape_eof", nil, self.$range($rb_minus(p, 1), p));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((148)['$===']($case)) {
-            
-            self.escape_s = p;
-            self.escape = nil;;
-            
-            self.$diagnostic("fatal", "escape_eof", nil, self.$range($rb_minus(p, 1), p));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_431 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(362, $ret_or_1)) {
+              
+              
+              self.escape_s = p;
+              self.escape = nil;;
+              
+              self.$diagnostic("fatal", "escape_eof", nil, self.$range($rb_minus(p, 1), p));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
               } else {
-                return $ret_or_431
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(62, $ret_or_1)) {
+              
+              
+              self.sharp_s = $rb_minus(p, 1);;
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.newline_s = p;;
+            } else if ($eqeqeq(221, $ret_or_1)) {
+              
+              
+              self.sharp_s = $rb_minus(p, 1);;
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(236, $ret_or_1)) {
+              
+              
+              self.sharp_s = $rb_minus(p, 1);;
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(248, $ret_or_1)) {
+              
+              
+              self.sharp_s = $rb_minus(p, 1);;
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(270, $ret_or_1)) {
+              
+              
+              self.sharp_s = $rb_minus(p, 1);;
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;;
+            } else if ($eqeqeq(285, $ret_or_1)) {
+              
+              
+              self.sharp_s = $rb_minus(p, 1);;
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(297, $ret_or_1)) {
+              
+              
+              self.sharp_s = $rb_minus(p, 1);;
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(323, $ret_or_1)) {
+              
+              
+              self.sharp_s = $rb_minus(p, 1);;
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(399, $ret_or_1)) {
+              
+              
+              self.sharp_s = $rb_minus(p, 1);;
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(409, $ret_or_1)) {
+              
+              
+              self.sharp_s = $rb_minus(p, 1);;
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(430, $ret_or_1)) {
+              
+              
+              self.sharp_s = $rb_minus(p, 1);;
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(102, $ret_or_1)) {
+              
+              
+              self.sharp_s = $rb_minus(p, 1);;
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(482, $ret_or_1)) {
+              
+              
+              self.num_base = 10;
+              self.num_digits_s = self.ts;;
+              
+              self.num_suffix_s = p;;
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$18(chars){var self = $$18.$$s == null ? this : $$18.$$s;
+
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tINTEGER", chars);}, {$$arity: 1, $$s: self});;
+            } else if ($eqeqeq(446, $ret_or_1)) {
+              
+              
+              self.num_base = 8;
+              self.num_digits_s = self.ts;;
+              
+              self.num_suffix_s = p;;
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$19(chars){var self = $$19.$$s == null ? this : $$19.$$s;
+
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tINTEGER", chars);}, {$$arity: 1, $$s: self});;
+            } else if ($eqeqeq(461, $ret_or_1)) {
+              
+              
+              self.num_suffix_s = p;;
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$20(chars){var self = $$20.$$s == null ? this : $$20.$$s;
+
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tINTEGER", chars);}, {$$arity: 1, $$s: self});;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              digits = self.$tok(self.num_digits_s, self.num_suffix_s);
+              if ($truthy(digits['$end_with?']("_".$freeze()))) {
+                self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
+              } else if ((($truthy(digits['$empty?']()) && ($eqeq(self.num_base, 8))) && ($truthy(self['$version?'](18))))) {
+                digits = "0".$freeze()
+              } else if ($truthy(digits['$empty?']())) {
+                self.$diagnostic("error", "empty_numeric")
+              } else if (($eqeq(self.num_base, 8) && ($truthy((invalid_idx = digits.$index(/[89]/)))))) {
+                
+                invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
+                self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));
+              };
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_432 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_432
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_433 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_433
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_434 = (function() {if ($truthy(($ret_or_435 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_435
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_434
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_436 = self.escape))) {
-                return $ret_or_436
+                self.num_xfrm.$call(digits.$to_i(self.num_base))
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(454, $ret_or_1)) {
+              
+              
+              self.num_suffix_s = p;;
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$21(chars){var self = $$21.$$s == null ? this : $$21.$$s;
+
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tFLOAT", self.$Float(chars));}, {$$arity: 1, $$s: self});;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              digits = self.$tok(self.ts, self.num_suffix_s);
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tFLOAT", self.$Float(digits), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((362)['$===']($case)) {
-            
-            self.escape_s = p;
-            self.escape = nil;;
-            
-            self.$diagnostic("fatal", "escape_eof", nil, self.$range($rb_minus(p, 1), p));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_437 = self.escape))) {
-              return $ret_or_437
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((62)['$===']($case)) {
-            
-            self.sharp_s = $rb_minus(p, 1);;
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.newline_s = p;;}
-            else if ((221)['$===']($case)) {
-            
-            self.sharp_s = $rb_minus(p, 1);;
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((236)['$===']($case)) {
-            
-            self.sharp_s = $rb_minus(p, 1);;
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((248)['$===']($case)) {
-            
-            self.sharp_s = $rb_minus(p, 1);;
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((270)['$===']($case)) {
-            
-            self.sharp_s = $rb_minus(p, 1);;
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;;}
-            else if ((285)['$===']($case)) {
-            
-            self.sharp_s = $rb_minus(p, 1);;
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((297)['$===']($case)) {
-            
-            self.sharp_s = $rb_minus(p, 1);;
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((323)['$===']($case)) {
-            
-            self.sharp_s = $rb_minus(p, 1);;
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((399)['$===']($case)) {
-            
-            self.sharp_s = $rb_minus(p, 1);;
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((409)['$===']($case)) {
-            
-            self.sharp_s = $rb_minus(p, 1);;
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((430)['$===']($case)) {
-            
-            self.sharp_s = $rb_minus(p, 1);;
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((102)['$===']($case)) {
-            
-            self.sharp_s = $rb_minus(p, 1);;
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((482)['$===']($case)) {
-            
-            self.num_base = 10;
-            self.num_digits_s = self.ts;;
-            
-            self.num_suffix_s = p;;
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$28 = function(chars){var self = $$28.$$s == null ? this : $$28.$$s;
+                self.num_xfrm.$call(digits)
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(450, $ret_or_1)) {
+              
+              
+              self.num_suffix_s = p;;
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$22(chars){var self = $$22.$$s == null ? this : $$22.$$s;
 
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tFLOAT", self.$Float(chars));}, {$$arity: 1, $$s: self});;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              digits = self.$tok(self.ts, self.num_suffix_s);
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tFLOAT", self.$Float(digits), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
+              } else {
+                self.num_xfrm.$call(digits)
+              };
               
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(276, $ret_or_1)) {
               
-              if (chars == null) {
-                chars = nil;
-              };
-              return self.$emit("tINTEGER", chars);}, $$28.$$s = self, $$28.$$arity = 1, $$28));;}
-            else if ((446)['$===']($case)) {
-            
-            self.num_base = 8;
-            self.num_digits_s = self.ts;;
-            
-            self.num_suffix_s = p;;
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$29 = function(chars){var self = $$29.$$s == null ? this : $$29.$$s;
-
               
+              self.te = $rb_plus(p, 1);;
               
-              if (chars == null) {
-                chars = nil;
-              };
-              return self.$emit("tINTEGER", chars);}, $$29.$$s = self, $$29.$$arity = 1, $$29));;}
-            else if ((461)['$===']($case)) {
-            
-            self.num_suffix_s = p;;
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$30 = function(chars){var self = $$30.$$s == null ? this : $$30.$$s;
-
+              self.newline_s = p;;
               
+              self.act = 79;;
+            } else if ($eqeqeq(36, $ret_or_1)) {
               
-              if (chars == null) {
-                chars = nil;
-              };
-              return self.$emit("tINTEGER", chars);}, $$30.$$s = self, $$30.$$arity = 1, $$30));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            digits = self.$tok(self.num_digits_s, self.num_suffix_s);
-            if ($truthy(digits['$end_with?']("_".$freeze()))) {
-              self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
-            } else if ($truthy((function() {if ($truthy(($ret_or_438 = (function() {if ($truthy(($ret_or_439 = digits['$empty?']()))) {
-              return self.num_base['$=='](8)
-            } else {
-              return $ret_or_439
-            }; return nil; })()))) {
-              return self['$version?'](18)
-            } else {
-              return $ret_or_438
-            }; return nil; })())) {
-              digits = "0".$freeze()
-            } else if ($truthy(digits['$empty?']())) {
-              self.$diagnostic("error", "empty_numeric")
-            } else if ($truthy((function() {if ($truthy(($ret_or_440 = self.num_base['$=='](8)))) {
-              
-              return (invalid_idx = digits.$index(/[89]/));
-            } else {
-              return $ret_or_440
-            }; return nil; })())) {
               
-              invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
-              self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));};
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              self.te = $rb_plus(p, 1);;
               
-              self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits.$to_i(self.num_base))
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((454)['$===']($case)) {
-            
-            self.num_suffix_s = p;;
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$31 = function(chars){var self = $$31.$$s == null ? this : $$31.$$s;
-
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
               
+              self.act = 78;;
+            } else if ($eqeqeq(47, $ret_or_1)) {
               
-              if (chars == null) {
-                chars = nil;
-              };
-              return self.$emit("tFLOAT", self.$Float(chars));}, $$31.$$s = self, $$31.$$arity = 1, $$31));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            digits = self.$tok(self.ts, self.num_suffix_s);
-            if ($truthy(self['$version?'](18, 19, 20))) {
               
-              self.$emit("tFLOAT", self.$Float(digits), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits)
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((450)['$===']($case)) {
-            
-            self.num_suffix_s = p;;
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$32 = function(chars){var self = $$32.$$s == null ? this : $$32.$$s;
-
+              self.te = $rb_plus(p, 1);;
               
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
               
-              if (chars == null) {
-                chars = nil;
-              };
-              return self.$emit("tFLOAT", self.$Float(chars));}, $$32.$$s = self, $$32.$$arity = 1, $$32));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            digits = self.$tok(self.ts, self.num_suffix_s);
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              self.act = 86;;
+            } else if ($eqeqeq(94, $ret_or_1)) {
               
-              self.$emit("tFLOAT", self.$Float(digits), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits)
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((276)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.newline_s = p;;
-            
-            self.act = 79;;}
-            else if ((36)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            if ($truthy(self.herebody_s)) {
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.act = 78;;}
-            else if ((47)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            if ($truthy(self.herebody_s)) {
+              self.te = $rb_plus(p, 1);;
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.act = 86;;}
-            else if ((94)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            if ($truthy(self.herebody_s)) {
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.act = 181;;}
-            else if ((66)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.act = 99;;}
-            else if ((85)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.act = 147;;}
-            else if ((93)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.act = 181;;}
-            else if ((38)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            tm = p;;
-            
-            self.act = 73;;}
-            else if ((391)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            tm = p;;
-            
-            self.act = 127;;}
-            else if ((390)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            tm = p;;
-            
-            self.act = 128;;}
-            else if ((483)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.num_base = 10;
-            self.num_digits_s = self.ts;;
-            
-            self.act = 154;;}
-            else if ((127)['$===']($case)) {
-            
-            codepoint = self.source_pts['$[]']($rb_minus(p, 1));
-            if ($truthy((function() {if ($truthy(($ret_or_441 = $rb_ge(self.version, 30)))) {
+              self.act = 181;;
+            } else if ($eqeqeq(66, $ret_or_1)) {
               
-              if ($truthy(($ret_or_442 = codepoint['$=='](117)))) {
-                return $ret_or_442
-              } else {
-                return codepoint['$=='](85)
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.act = 99;;
+            } else if ($eqeqeq(85, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.act = 147;;
+            } else if ($eqeqeq(93, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.act = 181;;
+            } else if ($eqeqeq(38, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              tm = p;;
+              
+              self.act = 73;;
+            } else if ($eqeqeq(391, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              tm = p;;
+              
+              self.act = 127;;
+            } else if ($eqeqeq(390, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              tm = p;;
+              
+              self.act = 128;;
+            } else if ($eqeqeq(483, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.num_base = 10;
+              self.num_digits_s = self.ts;;
+              
+              self.act = 154;;
+            } else if ($eqeqeq(127, $ret_or_1)) {
+              
+              
+              codepoint = self.source_pts['$[]']($rb_minus(p, 1));
+              if (($truthy($rb_ge(self.version, 30)) && (($eqeq(codepoint, 117) || ($eqeq(codepoint, 85)))))) {
+                self.$diagnostic("fatal", "invalid_escape")
               };
-            } else {
-              return $ret_or_441
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};
-            if ($truthy((self.escape = $$($nesting, 'ESCAPES')['$[]'](codepoint))['$nil?']())) {
-              self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))};;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_443 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_443
-              }; return nil; })())) {
+              if ($truthy((self.escape = $$('ESCAPES')['$[]'](codepoint))['$nil?']())) {
+                self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))
+              };;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_444 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_444
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_445 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_445
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_446 = (function() {if ($truthy(($ret_or_447 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_447
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_446
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_448 = self.escape))) {
-                return $ret_or_448
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((158)['$===']($case)) {
-            
-            codepoint = self.source_pts['$[]']($rb_minus(p, 1));
-            if ($truthy((function() {if ($truthy(($ret_or_449 = $rb_ge(self.version, 30)))) {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(158, $ret_or_1)) {
               
-              if ($truthy(($ret_or_450 = codepoint['$=='](117)))) {
-                return $ret_or_450
-              } else {
-                return codepoint['$=='](85)
+              
+              codepoint = self.source_pts['$[]']($rb_minus(p, 1));
+              if (($truthy($rb_ge(self.version, 30)) && (($eqeq(codepoint, 117) || ($eqeq(codepoint, 85)))))) {
+                self.$diagnostic("fatal", "invalid_escape")
               };
-            } else {
-              return $ret_or_449
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};
-            if ($truthy((self.escape = $$($nesting, 'ESCAPES')['$[]'](codepoint))['$nil?']())) {
-              self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))};;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_451 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_451
-              }; return nil; })())) {
+              if ($truthy((self.escape = $$('ESCAPES')['$[]'](codepoint))['$nil?']())) {
+                self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))
+              };;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_452 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_452
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_453 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_453
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_454 = (function() {if ($truthy(($ret_or_455 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_455
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_454
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_456 = self.escape))) {
-                return $ret_or_456
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((372)['$===']($case)) {
-            
-            codepoint = self.source_pts['$[]']($rb_minus(p, 1));
-            if ($truthy((function() {if ($truthy(($ret_or_457 = $rb_ge(self.version, 30)))) {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(372, $ret_or_1)) {
               
-              if ($truthy(($ret_or_458 = codepoint['$=='](117)))) {
-                return $ret_or_458
-              } else {
-                return codepoint['$=='](85)
-              };
-            } else {
-              return $ret_or_457
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};
-            if ($truthy((self.escape = $$($nesting, 'ESCAPES')['$[]'](codepoint))['$nil?']())) {
-              self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))};;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_459 = self.escape))) {
-              return $ret_or_459
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((125)['$===']($case)) {
-            
-            self.escape = self.source_buffer.$slice($rb_minus(p, 1)).$chr();
-            if ($truthy((function() {if ($truthy(($ret_or_460 = $rb_ge(self.version, 27)))) {
               
-              if ($truthy(($ret_or_461 = $range(0, 8, false)['$include?'](self.escape.$ord())))) {
-                return $ret_or_461
-              } else {
-                return $range(14, 31, false)['$include?'](self.escape.$ord())
+              codepoint = self.source_pts['$[]']($rb_minus(p, 1));
+              if (($truthy($rb_ge(self.version, 30)) && (($eqeq(codepoint, 117) || ($eqeq(codepoint, 85)))))) {
+                self.$diagnostic("fatal", "invalid_escape")
               };
-            } else {
-              return $ret_or_460
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_462 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_462
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
-              } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_463 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_463
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_464 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_464
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_465 = (function() {if ($truthy(($ret_or_466 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_466
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_465
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_467 = self.escape))) {
-                return $ret_or_467
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((156)['$===']($case)) {
-            
-            self.escape = self.source_buffer.$slice($rb_minus(p, 1)).$chr();
-            if ($truthy((function() {if ($truthy(($ret_or_468 = $rb_ge(self.version, 27)))) {
+              if ($truthy((self.escape = $$('ESCAPES')['$[]'](codepoint))['$nil?']())) {
+                self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))
+              };;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
               
-              if ($truthy(($ret_or_469 = $range(0, 8, false)['$include?'](self.escape.$ord())))) {
-                return $ret_or_469
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
               } else {
-                return $range(14, 31, false)['$include?'](self.escape.$ord())
+                self.$emit("tCHARACTER", value)
               };
-            } else {
-              return $ret_or_468
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_470 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_470
-              }; return nil; })())) {
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(125, $ret_or_1)) {
+              
+              
+              self.escape = self.source_buffer.$slice($rb_minus(p, 1)).$chr();
+              if (($truthy($rb_ge(self.version, 27)) && (($truthy($range(0, 8, false)['$include?'](self.escape.$ord())) || ($truthy($range(14, 31, false)['$include?'](self.escape.$ord()))))))) {
+                self.$diagnostic("fatal", "invalid_escape")
+              };;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_471 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_471
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_472 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_472
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_473 = (function() {if ($truthy(($ret_or_474 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_474
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_473
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_475 = self.escape))) {
-                return $ret_or_475
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((370)['$===']($case)) {
-            
-            self.escape = self.source_buffer.$slice($rb_minus(p, 1)).$chr();
-            if ($truthy((function() {if ($truthy(($ret_or_476 = $rb_ge(self.version, 27)))) {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(156, $ret_or_1)) {
               
-              if ($truthy(($ret_or_477 = $range(0, 8, false)['$include?'](self.escape.$ord())))) {
-                return $ret_or_477
-              } else {
-                return $range(14, 31, false)['$include?'](self.escape.$ord())
-              };
-            } else {
-              return $ret_or_476
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_478 = self.escape))) {
-              return $ret_or_478
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((132)['$===']($case)) {
-            
-            self.escape = self.$encode_escape(self.$tok($rb_minus(p, 2), p).$to_i(16));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_479 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_479
-              }; return nil; })())) {
+              
+              self.escape = self.source_buffer.$slice($rb_minus(p, 1)).$chr();
+              if (($truthy($rb_ge(self.version, 27)) && (($truthy($range(0, 8, false)['$include?'](self.escape.$ord())) || ($truthy($range(14, 31, false)['$include?'](self.escape.$ord()))))))) {
+                self.$diagnostic("fatal", "invalid_escape")
+              };;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_480 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_480
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_481 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_481
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_482 = (function() {if ($truthy(($ret_or_483 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_483
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_482
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_484 = self.escape))) {
-                return $ret_or_484
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(370, $ret_or_1)) {
+              
+              
+              self.escape = self.source_buffer.$slice($rb_minus(p, 1)).$chr();
+              if (($truthy($rb_ge(self.version, 27)) && (($truthy($range(0, 8, false)['$include?'](self.escape.$ord())) || ($truthy($range(14, 31, false)['$include?'](self.escape.$ord()))))))) {
+                self.$diagnostic("fatal", "invalid_escape")
+              };;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((163)['$===']($case)) {
-            
-            self.escape = self.$encode_escape(self.$tok($rb_minus(p, 2), p).$to_i(16));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_485 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(132, $ret_or_1)) {
+              
+              
+              self.escape = self.$encode_escape(self.$tok($rb_minus(p, 2), p).$to_i(16));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                return $ret_or_485
-              }; return nil; })())) {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(163, $ret_or_1)) {
+              
+              
+              self.escape = self.$encode_escape(self.$tok($rb_minus(p, 2), p).$to_i(16));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_486 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_486
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_487 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_487
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_488 = (function() {if ($truthy(($ret_or_489 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_489
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_488
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_490 = self.escape))) {
-                return $ret_or_490
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(377, $ret_or_1)) {
+              
+              
+              self.escape = self.$encode_escape(self.$tok($rb_minus(p, 2), p).$to_i(16));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((377)['$===']($case)) {
-            
-            self.escape = self.$encode_escape(self.$tok($rb_minus(p, 2), p).$to_i(16));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_491 = self.escape))) {
-              return $ret_or_491
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((128)['$===']($case)) {
-            
-            self.escape = self.$encode_escape(self.$tok($rb_minus(p, 2), p).$to_i(16));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_492 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(128, $ret_or_1)) {
+              
+              
+              self.escape = self.$encode_escape(self.$tok($rb_minus(p, 2), p).$to_i(16));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                return $ret_or_492
-              }; return nil; })())) {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(159, $ret_or_1)) {
+              
+              
+              self.escape = self.$encode_escape(self.$tok($rb_minus(p, 2), p).$to_i(16));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_493 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_493
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_494 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_494
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_495 = (function() {if ($truthy(($ret_or_496 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_496
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_495
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_497 = self.escape))) {
-                return $ret_or_497
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(373, $ret_or_1)) {
+              
+              
+              self.escape = self.$encode_escape(self.$tok($rb_minus(p, 2), p).$to_i(16));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((159)['$===']($case)) {
-            
-            self.escape = self.$encode_escape(self.$tok($rb_minus(p, 2), p).$to_i(16));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_498 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(478, $ret_or_1)) {
+              
+              
+              self.num_base = 16;
+              self.num_digits_s = p;;
+              
+              self.num_suffix_s = p;;
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$23(chars){var self = $$23.$$s == null ? this : $$23.$$s;
+
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tINTEGER", chars);}, {$$arity: 1, $$s: self});;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              digits = self.$tok(self.num_digits_s, self.num_suffix_s);
+              if ($truthy(digits['$end_with?']("_".$freeze()))) {
+                self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
+              } else if ((($truthy(digits['$empty?']()) && ($eqeq(self.num_base, 8))) && ($truthy(self['$version?'](18))))) {
+                digits = "0".$freeze()
+              } else if ($truthy(digits['$empty?']())) {
+                self.$diagnostic("error", "empty_numeric")
+              } else if (($eqeq(self.num_base, 8) && ($truthy((invalid_idx = digits.$index(/[89]/)))))) {
+                
+                invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
+                self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));
+              };
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
               } else {
-                return $ret_or_498
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                self.num_xfrm.$call(digits.$to_i(self.num_base))
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(472, $ret_or_1)) {
+              
+              
+              self.num_base = 10;
+              self.num_digits_s = p;;
+              
+              self.num_suffix_s = p;;
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$24(chars){var self = $$24.$$s == null ? this : $$24.$$s;
+
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tINTEGER", chars);}, {$$arity: 1, $$s: self});;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              digits = self.$tok(self.num_digits_s, self.num_suffix_s);
+              if ($truthy(digits['$end_with?']("_".$freeze()))) {
+                self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
+              } else if ((($truthy(digits['$empty?']()) && ($eqeq(self.num_base, 8))) && ($truthy(self['$version?'](18))))) {
+                digits = "0".$freeze()
+              } else if ($truthy(digits['$empty?']())) {
+                self.$diagnostic("error", "empty_numeric")
+              } else if (($eqeq(self.num_base, 8) && ($truthy((invalid_idx = digits.$index(/[89]/)))))) {
+                
+                invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
+                self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));
+              };
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_499 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_499
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_500 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_500
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_501 = (function() {if ($truthy(($ret_or_502 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_502
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_501
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_503 = self.escape))) {
-                return $ret_or_503
+                self.num_xfrm.$call(digits.$to_i(self.num_base))
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(475, $ret_or_1)) {
+              
+              
+              self.num_base = 8;
+              self.num_digits_s = p;;
+              
+              self.num_suffix_s = p;;
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$25(chars){var self = $$25.$$s == null ? this : $$25.$$s;
+
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tINTEGER", chars);}, {$$arity: 1, $$s: self});;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              digits = self.$tok(self.num_digits_s, self.num_suffix_s);
+              if ($truthy(digits['$end_with?']("_".$freeze()))) {
+                self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
+              } else if ((($truthy(digits['$empty?']()) && ($eqeq(self.num_base, 8))) && ($truthy(self['$version?'](18))))) {
+                digits = "0".$freeze()
+              } else if ($truthy(digits['$empty?']())) {
+                self.$diagnostic("error", "empty_numeric")
+              } else if (($eqeq(self.num_base, 8) && ($truthy((invalid_idx = digits.$index(/[89]/)))))) {
+                
+                invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
+                self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));
+              };
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((373)['$===']($case)) {
-            
-            self.escape = self.$encode_escape(self.$tok($rb_minus(p, 2), p).$to_i(16));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_504 = self.escape))) {
-              return $ret_or_504
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((478)['$===']($case)) {
-            
-            self.num_base = 16;
-            self.num_digits_s = p;;
-            
-            self.num_suffix_s = p;;
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$33 = function(chars){var self = $$33.$$s == null ? this : $$33.$$s;
+                self.num_xfrm.$call(digits.$to_i(self.num_base))
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(469, $ret_or_1)) {
+              
+              
+              self.num_base = 2;
+              self.num_digits_s = p;;
+              
+              self.num_suffix_s = p;;
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$26(chars){var self = $$26.$$s == null ? this : $$26.$$s;
 
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tINTEGER", chars);}, {$$arity: 1, $$s: self});;
               
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              if (chars == null) {
-                chars = nil;
+              digits = self.$tok(self.num_digits_s, self.num_suffix_s);
+              if ($truthy(digits['$end_with?']("_".$freeze()))) {
+                self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
+              } else if ((($truthy(digits['$empty?']()) && ($eqeq(self.num_base, 8))) && ($truthy(self['$version?'](18))))) {
+                digits = "0".$freeze()
+              } else if ($truthy(digits['$empty?']())) {
+                self.$diagnostic("error", "empty_numeric")
+              } else if (($eqeq(self.num_base, 8) && ($truthy((invalid_idx = digits.$index(/[89]/)))))) {
+                
+                invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
+                self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));
+              };
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
+              } else {
+                self.num_xfrm.$call(digits.$to_i(self.num_base))
               };
-              return self.$emit("tINTEGER", chars);}, $$33.$$s = self, $$33.$$arity = 1, $$33));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            digits = self.$tok(self.num_digits_s, self.num_suffix_s);
-            if ($truthy(digits['$end_with?']("_".$freeze()))) {
-              self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
-            } else if ($truthy((function() {if ($truthy(($ret_or_505 = (function() {if ($truthy(($ret_or_506 = digits['$empty?']()))) {
-              return self.num_base['$=='](8)
-            } else {
-              return $ret_or_506
-            }; return nil; })()))) {
-              return self['$version?'](18)
-            } else {
-              return $ret_or_505
-            }; return nil; })())) {
-              digits = "0".$freeze()
-            } else if ($truthy(digits['$empty?']())) {
-              self.$diagnostic("error", "empty_numeric")
-            } else if ($truthy((function() {if ($truthy(($ret_or_507 = self.num_base['$=='](8)))) {
-              
-              return (invalid_idx = digits.$index(/[89]/));
-            } else {
-              return $ret_or_507
-            }; return nil; })())) {
               
-              invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
-              self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));};
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(481, $ret_or_1)) {
               
-              self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits.$to_i(self.num_base))
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((472)['$===']($case)) {
-            
-            self.num_base = 10;
-            self.num_digits_s = p;;
-            
-            self.num_suffix_s = p;;
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$34 = function(chars){var self = $$34.$$s == null ? this : $$34.$$s;
+              
+              self.num_base = 10;
+              self.num_digits_s = self.ts;;
+              
+              self.num_suffix_s = p;;
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$27(chars){var self = $$27.$$s == null ? this : $$27.$$s;
 
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tINTEGER", chars);}, {$$arity: 1, $$s: self});;
               
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              if (chars == null) {
-                chars = nil;
+              digits = self.$tok(self.num_digits_s, self.num_suffix_s);
+              if ($truthy(digits['$end_with?']("_".$freeze()))) {
+                self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
+              } else if ((($truthy(digits['$empty?']()) && ($eqeq(self.num_base, 8))) && ($truthy(self['$version?'](18))))) {
+                digits = "0".$freeze()
+              } else if ($truthy(digits['$empty?']())) {
+                self.$diagnostic("error", "empty_numeric")
+              } else if (($eqeq(self.num_base, 8) && ($truthy((invalid_idx = digits.$index(/[89]/)))))) {
+                
+                invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
+                self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));
+              };
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
+              } else {
+                self.num_xfrm.$call(digits.$to_i(self.num_base))
               };
-              return self.$emit("tINTEGER", chars);}, $$34.$$s = self, $$34.$$arity = 1, $$34));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            digits = self.$tok(self.num_digits_s, self.num_suffix_s);
-            if ($truthy(digits['$end_with?']("_".$freeze()))) {
-              self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
-            } else if ($truthy((function() {if ($truthy(($ret_or_508 = (function() {if ($truthy(($ret_or_509 = digits['$empty?']()))) {
-              return self.num_base['$=='](8)
-            } else {
-              return $ret_or_509
-            }; return nil; })()))) {
-              return self['$version?'](18)
-            } else {
-              return $ret_or_508
-            }; return nil; })())) {
-              digits = "0".$freeze()
-            } else if ($truthy(digits['$empty?']())) {
-              self.$diagnostic("error", "empty_numeric")
-            } else if ($truthy((function() {if ($truthy(($ret_or_510 = self.num_base['$=='](8)))) {
-              
-              return (invalid_idx = digits.$index(/[89]/));
-            } else {
-              return $ret_or_510
-            }; return nil; })())) {
               
-              invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
-              self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));};
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(445, $ret_or_1)) {
               
-              self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits.$to_i(self.num_base))
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((475)['$===']($case)) {
-            
-            self.num_base = 8;
-            self.num_digits_s = p;;
-            
-            self.num_suffix_s = p;;
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$35 = function(chars){var self = $$35.$$s == null ? this : $$35.$$s;
+              
+              self.num_base = 8;
+              self.num_digits_s = self.ts;;
+              
+              self.num_suffix_s = p;;
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$28(chars){var self = $$28.$$s == null ? this : $$28.$$s;
 
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tINTEGER", chars);}, {$$arity: 1, $$s: self});;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              digits = self.$tok(self.num_digits_s, self.num_suffix_s);
+              if ($truthy(digits['$end_with?']("_".$freeze()))) {
+                self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
+              } else if ((($truthy(digits['$empty?']()) && ($eqeq(self.num_base, 8))) && ($truthy(self['$version?'](18))))) {
+                digits = "0".$freeze()
+              } else if ($truthy(digits['$empty?']())) {
+                self.$diagnostic("error", "empty_numeric")
+              } else if (($eqeq(self.num_base, 8) && ($truthy((invalid_idx = digits.$index(/[89]/)))))) {
+                
+                invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
+                self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));
+              };
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
+              } else {
+                self.num_xfrm.$call(digits.$to_i(self.num_base))
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(32, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
               
+              tm = p;;
               
-              if (chars == null) {
-                chars = nil;
-              };
-              return self.$emit("tINTEGER", chars);}, $$35.$$s = self, $$35.$$arity = 1, $$35));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            digits = self.$tok(self.num_digits_s, self.num_suffix_s);
-            if ($truthy(digits['$end_with?']("_".$freeze()))) {
-              self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
-            } else if ($truthy((function() {if ($truthy(($ret_or_511 = (function() {if ($truthy(($ret_or_512 = digits['$empty?']()))) {
-              return self.num_base['$=='](8)
-            } else {
-              return $ret_or_512
-            }; return nil; })()))) {
-              return self['$version?'](18)
-            } else {
-              return $ret_or_511
-            }; return nil; })())) {
-              digits = "0".$freeze()
-            } else if ($truthy(digits['$empty?']())) {
-              self.$diagnostic("error", "empty_numeric")
-            } else if ($truthy((function() {if ($truthy(($ret_or_513 = self.num_base['$=='](8)))) {
-              
-              return (invalid_idx = digits.$index(/[89]/));
-            } else {
-              return $ret_or_513
-            }; return nil; })())) {
+              self.act = 73;;
+            } else if ($eqeqeq(63, $ret_or_1)) {
               
-              invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
-              self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));};
-            if ($truthy(self['$version?'](18, 19, 20))) {
               
-              self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits.$to_i(self.num_base))
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((469)['$===']($case)) {
-            
-            self.num_base = 2;
-            self.num_digits_s = p;;
-            
-            self.num_suffix_s = p;;
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$36 = function(chars){var self = $$36.$$s == null ? this : $$36.$$s;
-
+              self.te = $rb_plus(p, 1);;
               
+              self.sharp_s = $rb_minus(p, 1);;
               
-              if (chars == null) {
-                chars = nil;
-              };
-              return self.$emit("tINTEGER", chars);}, $$36.$$s = self, $$36.$$arity = 1, $$36));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            digits = self.$tok(self.num_digits_s, self.num_suffix_s);
-            if ($truthy(digits['$end_with?']("_".$freeze()))) {
-              self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
-            } else if ($truthy((function() {if ($truthy(($ret_or_514 = (function() {if ($truthy(($ret_or_515 = digits['$empty?']()))) {
-              return self.num_base['$=='](8)
-            } else {
-              return $ret_or_515
-            }; return nil; })()))) {
-              return self['$version?'](18)
-            } else {
-              return $ret_or_514
-            }; return nil; })())) {
-              digits = "0".$freeze()
-            } else if ($truthy(digits['$empty?']())) {
-              self.$diagnostic("error", "empty_numeric")
-            } else if ($truthy((function() {if ($truthy(($ret_or_516 = self.num_base['$=='](8)))) {
-              
-              return (invalid_idx = digits.$index(/[89]/));
-            } else {
-              return $ret_or_516
-            }; return nil; })())) {
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
               
-              invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
-              self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));};
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              self.act = 99;;
+            } else if ($eqeqeq(92, $ret_or_1)) {
               
-              self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits.$to_i(self.num_base))
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((481)['$===']($case)) {
-            
-            self.num_base = 10;
-            self.num_digits_s = self.ts;;
-            
-            self.num_suffix_s = p;;
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$37 = function(chars){var self = $$37.$$s == null ? this : $$37.$$s;
-
               
+              self.te = $rb_plus(p, 1);;
               
-              if (chars == null) {
-                chars = nil;
-              };
-              return self.$emit("tINTEGER", chars);}, $$37.$$s = self, $$37.$$arity = 1, $$37));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            digits = self.$tok(self.num_digits_s, self.num_suffix_s);
-            if ($truthy(digits['$end_with?']("_".$freeze()))) {
-              self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
-            } else if ($truthy((function() {if ($truthy(($ret_or_517 = (function() {if ($truthy(($ret_or_518 = digits['$empty?']()))) {
-              return self.num_base['$=='](8)
-            } else {
-              return $ret_or_518
-            }; return nil; })()))) {
-              return self['$version?'](18)
-            } else {
-              return $ret_or_517
-            }; return nil; })())) {
-              digits = "0".$freeze()
-            } else if ($truthy(digits['$empty?']())) {
-              self.$diagnostic("error", "empty_numeric")
-            } else if ($truthy((function() {if ($truthy(($ret_or_519 = self.num_base['$=='](8)))) {
-              
-              return (invalid_idx = digits.$index(/[89]/));
-            } else {
-              return $ret_or_519
-            }; return nil; })())) {
+              self.sharp_s = $rb_minus(p, 1);;
               
-              invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
-              self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));};
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
               
-              self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits.$to_i(self.num_base))
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((445)['$===']($case)) {
-            
-            self.num_base = 8;
-            self.num_digits_s = self.ts;;
-            
-            self.num_suffix_s = p;;
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$38 = function(chars){var self = $$38.$$s == null ? this : $$38.$$s;
+              self.act = 181;;
+            } else if ($eqeqeq(488, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.num_suffix_s = p;;
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$29(chars){var self = $$29.$$s == null ? this : $$29.$$s;
 
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tINTEGER", chars);}, {$$arity: 1, $$s: self});;
               
+              self.act = 156;;
+            } else if ($eqeqeq(484, $ret_or_1)) {
               
-              if (chars == null) {
-                chars = nil;
-              };
-              return self.$emit("tINTEGER", chars);}, $$38.$$s = self, $$38.$$arity = 1, $$38));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            digits = self.$tok(self.num_digits_s, self.num_suffix_s);
-            if ($truthy(digits['$end_with?']("_".$freeze()))) {
-              self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
-            } else if ($truthy((function() {if ($truthy(($ret_or_520 = (function() {if ($truthy(($ret_or_521 = digits['$empty?']()))) {
-              return self.num_base['$=='](8)
-            } else {
-              return $ret_or_521
-            }; return nil; })()))) {
-              return self['$version?'](18)
-            } else {
-              return $ret_or_520
-            }; return nil; })())) {
-              digits = "0".$freeze()
-            } else if ($truthy(digits['$empty?']())) {
-              self.$diagnostic("error", "empty_numeric")
-            } else if ($truthy((function() {if ($truthy(($ret_or_522 = self.num_base['$=='](8)))) {
-              
-              return (invalid_idx = digits.$index(/[89]/));
-            } else {
-              return $ret_or_522
-            }; return nil; })())) {
               
-              invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
-              self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));};
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              self.te = $rb_plus(p, 1);;
               
-              self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits.$to_i(self.num_base))
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((32)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            if ($truthy(self.herebody_s)) {
+              self.num_base = 10;
+              self.num_digits_s = self.ts;;
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            tm = p;;
-            
-            self.act = 73;;}
-            else if ((63)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.sharp_s = $rb_minus(p, 1);;
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.act = 99;;}
-            else if ((92)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.sharp_s = $rb_minus(p, 1);;
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.act = 181;;}
-            else if ((488)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.num_suffix_s = p;;
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$39 = function(chars){var self = $$39.$$s == null ? this : $$39.$$s;
+              self.num_suffix_s = p;;
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$30(chars){var self = $$30.$$s == null ? this : $$30.$$s;
 
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tINTEGER", chars);}, {$$arity: 1, $$s: self});;
               
+              self.act = 156;;
+            } else if ($eqeqeq(448, $ret_or_1)) {
               
-              if (chars == null) {
-                chars = nil;
-              };
-              return self.$emit("tINTEGER", chars);}, $$39.$$s = self, $$39.$$arity = 1, $$39));;
-            
-            self.act = 156;;}
-            else if ((484)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.num_base = 10;
-            self.num_digits_s = self.ts;;
-            
-            self.num_suffix_s = p;;
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$40 = function(chars){var self = $$40.$$s == null ? this : $$40.$$s;
-
               
+              self.te = $rb_plus(p, 1);;
               
-              if (chars == null) {
-                chars = nil;
-              };
-              return self.$emit("tINTEGER", chars);}, $$40.$$s = self, $$40.$$arity = 1, $$40));;
-            
-            self.act = 156;;}
-            else if ((448)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.num_base = 8;
-            self.num_digits_s = self.ts;;
-            
-            self.num_suffix_s = p;;
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$41 = function(chars){var self = $$41.$$s == null ? this : $$41.$$s;
-
+              self.num_base = 8;
+              self.num_digits_s = self.ts;;
               
+              self.num_suffix_s = p;;
               
-              if (chars == null) {
-                chars = nil;
-              };
-              return self.$emit("tINTEGER", chars);}, $$41.$$s = self, $$41.$$arity = 1, $$41));;
-            
-            self.act = 156;;}};};
+              self.num_xfrm = $send(self, 'lambda', [], function $$31(chars){var self = $$31.$$s == null ? this : $$31.$$s;
+
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tINTEGER", chars);}, {$$arity: 1, $$s: self});;
+              
+              self.act = 156;;
+            } else {
+              nil
+            }
+          };
+        };
         if ($truthy($rb_le(_goto_level, _again))) {
           
-          $case = _lex_to_state_actions['$[]'](self.cs);
-          if ((96)['$===']($case)) {
-          self.ts = nil;};
-          if (self.cs['$=='](0)) {
+          if ($eqeqeq(96, ($ret_or_1 = _lex_to_state_actions['$[]'](self.cs)))) {
+            
+            self.ts = nil;
+          } else {
+            nil
+          };
+          if ($eqeq(self.cs, 0)) {
             
             _goto_level = _out;
-            continue;;};
+            continue;;
+          };
           p = $rb_plus(p, 1);
-          if ($truthy(p['$!='](pe))) {
+          if ($neqeq(p, pe)) {
             
             _goto_level = _resume;
-            continue;;};};
+            continue;;
+          };
+        };
         if ($truthy($rb_le(_goto_level, _test_eof))) {
-          if (p['$=='](eof)) {
+          if ($eqeq(p, eof)) {
             if ($truthy($rb_gt(_lex_eof_trans['$[]'](self.cs), 0))) {
               
               _trans = $rb_minus(_lex_eof_trans['$[]'](self.cs), 1);
               _goto_level = _eof_trans;
-              continue;;}}};
+              continue;;
+            }
+          }
+        };
         if ($truthy($rb_le(_goto_level, _out))) {
-          break;};
+          break;
+        };
       };;
       if ($truthy(false)) {
-        testEof};
+        testEof
+      };
       self.p = p;
       if ($truthy(self.token_queue['$any?']())) {
         return self.token_queue.$shift()
-      } else if (self.cs['$=='](klass.$lex_error())) {
+      } else if ($eqeq(self.cs, klass.$lex_error())) {
         return [false, ["$error".$freeze(), self.$range($rb_minus(p, 1), p)]]
       } else {
         
         eof = self.source_pts.$size();
         return [false, ["$eof".$freeze(), self.$range(eof, eof)]];
       };
-    }, $Lexer_advance$12.$$arity = 0);
+    }, 0);
     self.$protected();
     
-    Opal.def(self, '$eof_codepoint?', $Lexer_eof_codepoint$ques$42 = function(point) {
-      var self = this;
-
+    $def(self, '$eof_codepoint?', function $Lexer_eof_codepoint$ques$32(point) {
+      
       return [4, 26, 0]['$include?'](point)
-    }, $Lexer_eof_codepoint$ques$42.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$version?', $Lexer_version$ques$43 = function($a) {
+    $def(self, '$version?', function $Lexer_version$ques$33($a) {
       var $post_args, versions, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       versions = $post_args;;
       return versions['$include?'](self.version);
-    }, $Lexer_version$ques$43.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$stack_pop', $Lexer_stack_pop$44 = function $$stack_pop() {
+    $def(self, '$stack_pop', function $$stack_pop() {
       var self = this;
 
       
       self.top = $rb_minus(self.top, 1);
       return self.stack['$[]'](self.top);
-    }, $Lexer_stack_pop$44.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$encode_escape', $Lexer_encode_escape$45 = function $$encode_escape(ord) {
+    $def(self, '$encode_escape', function $$encode_escape(ord) {
       var self = this;
 
       return ord.$chr().$force_encoding(self.source_buffer.$source().$encoding())
-    }, $Lexer_encode_escape$45.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$tok', $Lexer_tok$46 = function $$tok(s, e) {
+    $def(self, '$tok', function $$tok(s, e) {
       var self = this;
 
       
       
-      if (s == null) {
-        s = self.ts;
-      };
+      if (s == null) s = self.ts;;
       
-      if (e == null) {
-        e = self.te;
-      };
+      if (e == null) e = self.te;;
       return self.source_buffer.$slice(Opal.Range.$new(s,e, true));
-    }, $Lexer_tok$46.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$range', $Lexer_range$47 = function $$range(s, e) {
+    $def(self, '$range', function $$range(s, e) {
       var self = this;
 
       
       
-      if (s == null) {
-        s = self.ts;
-      };
+      if (s == null) s = self.ts;;
       
-      if (e == null) {
-        e = self.te;
-      };
-      return $$$($$$($$($nesting, 'Parser'), 'Source'), 'Range').$new(self.source_buffer, s, e);
-    }, $Lexer_range$47.$$arity = -1);
+      if (e == null) e = self.te;;
+      return $$$($$$($$('Parser'), 'Source'), 'Range').$new(self.source_buffer, s, e);
+    }, -1);
     
-    Opal.def(self, '$emit', $Lexer_emit$48 = function $$emit(type, value, s, e) {
+    $def(self, '$emit', function $$emit(type, value, s, e) {
       var self = this, token = nil;
 
       
       
-      if (value == null) {
-        value = self.$tok();
-      };
+      if (value == null) value = self.$tok();;
       
-      if (s == null) {
-        s = self.ts;
-      };
+      if (s == null) s = self.ts;;
       
-      if (e == null) {
-        e = self.te;
-      };
+      if (e == null) e = self.te;;
       token = [type, [value, self.$range(s, e)]];
       self.token_queue.$push(token);
       if ($truthy(self.tokens)) {
-        self.tokens.$push(token)};
+        self.tokens.$push(token)
+      };
       return token;
-    }, $Lexer_emit$48.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$emit_table', $Lexer_emit_table$49 = function $$emit_table(table, s, e) {
+    $def(self, '$emit_table', function $$emit_table(table, s, e) {
       var self = this, value = nil;
 
       
       
-      if (s == null) {
-        s = self.ts;
-      };
+      if (s == null) s = self.ts;;
       
-      if (e == null) {
-        e = self.te;
-      };
+      if (e == null) e = self.te;;
       value = self.$tok(s, e);
       return self.$emit(table['$[]'](value), value, s, e);
-    }, $Lexer_emit_table$49.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$emit_do', $Lexer_emit_do$50 = function $$emit_do(do_block) {
-      var self = this, $ret_or_523 = nil;
+    $def(self, '$emit_do', function $$emit_do(do_block) {
+      var self = this;
 
       
       
-      if (do_block == null) {
-        do_block = false;
-      };
+      if (do_block == null) do_block = false;;
       if ($truthy(self.cond['$active?']())) {
         return self.$emit("kDO_COND", "do".$freeze())
-      } else if ($truthy((function() {if ($truthy(($ret_or_523 = self.cmdarg['$active?']()))) {
-        return $ret_or_523
-      } else {
-        return do_block
-      }; return nil; })())) {
+      } else if (($truthy(self.cmdarg['$active?']()) || ($truthy(do_block)))) {
         return self.$emit("kDO_BLOCK", "do".$freeze())
       } else {
         return self.$emit("kDO", "do".$freeze())
       };
-    }, $Lexer_emit_do$50.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$arg_or_cmdarg', $Lexer_arg_or_cmdarg$51 = function $$arg_or_cmdarg(cmd_state) {
+    $def(self, '$arg_or_cmdarg', function $$arg_or_cmdarg(cmd_state) {
       var self = this;
 
       if ($truthy(cmd_state)) {
@@ -19936,87 +17124,67 @@ Opal.modules["parser/lexer"] = function(Opal) {
       } else {
         return self.$class().$lex_en_expr_arg()
       }
-    }, $Lexer_arg_or_cmdarg$51.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$emit_comment', $Lexer_emit_comment$52 = function $$emit_comment(s, e) {
+    $def(self, '$emit_comment', function $$emit_comment(s, e) {
       var self = this;
 
       
       
-      if (s == null) {
-        s = self.ts;
-      };
+      if (s == null) s = self.ts;;
       
-      if (e == null) {
-        e = self.te;
-      };
+      if (e == null) e = self.te;;
       if ($truthy(self.comments)) {
-        self.comments.$push($$$($$$($$($nesting, 'Parser'), 'Source'), 'Comment').$new(self.$range(s, e)))};
+        self.comments.$push($$$($$$($$('Parser'), 'Source'), 'Comment').$new(self.$range(s, e)))
+      };
       if ($truthy(self.tokens)) {
-        self.tokens.$push(["tCOMMENT", [self.$tok(s, e), self.$range(s, e)]])};
+        self.tokens.$push(["tCOMMENT", [self.$tok(s, e), self.$range(s, e)]])
+      };
       return nil;
-    }, $Lexer_emit_comment$52.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$diagnostic', $Lexer_diagnostic$53 = function $$diagnostic(type, reason, arguments$, location, highlights) {
+    $def(self, '$diagnostic', function $$diagnostic(type, reason, arguments$, location, highlights) {
       var self = this;
 
       
       
-      if (arguments$ == null) {
-        arguments$ = nil;
-      };
+      if (arguments$ == null) arguments$ = nil;;
       
-      if (location == null) {
-        location = self.$range();
-      };
+      if (location == null) location = self.$range();;
       
-      if (highlights == null) {
-        highlights = [];
-      };
-      return self.diagnostics.$process($$$($$($nesting, 'Parser'), 'Diagnostic').$new(type, reason, arguments$, location, highlights));
-    }, $Lexer_diagnostic$53.$$arity = -3);
+      if (highlights == null) highlights = [];;
+      return self.diagnostics.$process($$$($$('Parser'), 'Diagnostic').$new(type, reason, arguments$, location, highlights));
+    }, -3);
     
-    Opal.def(self, '$push_literal', $Lexer_push_literal$54 = function $$push_literal($a) {
+    $def(self, '$push_literal', function $$push_literal($a) {
       var $post_args, args, self = this, new_literal = nil;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
-      new_literal = $send($$($nesting, 'Literal'), 'new', [self].concat(Opal.to_a(args)));
+      new_literal = $send($$('Literal'), 'new', [self].concat($to_a(args)));
       self.literal_stack.$push(new_literal);
       return self.$next_state_for_literal(new_literal);
-    }, $Lexer_push_literal$54.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$next_state_for_literal', $Lexer_next_state_for_literal$55 = function $$next_state_for_literal(literal) {
-      var self = this, $ret_or_524 = nil, $ret_or_525 = nil, $ret_or_526 = nil;
+    $def(self, '$next_state_for_literal', function $$next_state_for_literal(literal) {
+      var self = this;
 
-      if ($truthy((function() {if ($truthy(($ret_or_524 = literal['$words?']()))) {
-        return literal['$backslash_delimited?']()
-      } else {
-        return $ret_or_524
-      }; return nil; })())) {
+      if (($truthy(literal['$words?']()) && ($truthy(literal['$backslash_delimited?']())))) {
         if ($truthy(literal['$interpolate?']())) {
           return self.$class().$lex_en_interp_backslash_delimited_words()
         } else {
           return self.$class().$lex_en_plain_backslash_delimited_words()
         }
-      } else if ($truthy((function() {if ($truthy(($ret_or_525 = literal['$words?']()))) {
-        return literal['$backslash_delimited?']()['$!']()
-      } else {
-        return $ret_or_525
-      }; return nil; })())) {
+      } else if (($truthy(literal['$words?']()) && ($not(literal['$backslash_delimited?']())))) {
         if ($truthy(literal['$interpolate?']())) {
           return self.$class().$lex_en_interp_words()
         } else {
           return self.$class().$lex_en_plain_words()
         }
-      } else if ($truthy((function() {if ($truthy(($ret_or_526 = literal['$words?']()['$!']()))) {
-        return literal['$backslash_delimited?']()
-      } else {
-        return $ret_or_526
-      }; return nil; })())) {
+      } else if (($not(literal['$words?']()) && ($truthy(literal['$backslash_delimited?']())))) {
         if ($truthy(literal['$interpolate?']())) {
           return self.$class().$lex_en_interp_backslash_delimited()
         } else {
@@ -20027,111 +17195,85 @@ Opal.modules["parser/lexer"] = function(Opal) {
       } else {
         return self.$class().$lex_en_plain_string()
       }
-    }, $Lexer_next_state_for_literal$55.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$literal', $Lexer_literal$56 = function $$literal() {
+    $def(self, '$literal', function $$literal() {
       var self = this;
 
       return self.literal_stack.$last()
-    }, $Lexer_literal$56.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$pop_literal', $Lexer_pop_literal$57 = function $$pop_literal() {
+    $def(self, '$pop_literal', function $$pop_literal() {
       var self = this, old_literal = nil;
 
       
       old_literal = self.literal_stack.$pop();
       self.dedent_level = old_literal.$dedent_level();
-      if (old_literal.$type()['$==']("tREGEXP_BEG")) {
+      if ($eqeq(old_literal.$type(), "tREGEXP_BEG")) {
         return self.$class().$lex_en_regexp_modifiers()
       } else {
         return self.$class().$lex_en_expr_end()
       };
-    }, $Lexer_pop_literal$57.$$arity = 0);
-    Opal.const_set($nesting[0], 'PUNCTUATION', $hash2(["=", "&", "|", "!", "^", "+", "-", "*", "/", "%", "~", ",", ";", ".", "..", "...", "[", "]", "(", ")", "?", ":", "&&", "||", "-@", "+@", "~@", "**", "->", "=~", "!~", "==", "!=", ">", ">>", ">=", "<", "<<", "<=", "=>", "::", "===", "<=>", "[]", "[]=", "{", "}", "`", "!@", "&."], {"=": "tEQL", "&": "tAMPER2", "|": "tPIPE", "!": "tBANG", "^": "tCARET", "+": "tPLUS", "-": "tMINUS", "*": "tSTAR2", "/": "tDIVIDE", "%": "tPERCENT", "~": "tTILDE", ",": "tCOMMA", ";": "tSEMI", ".": "tDOT", "..": "tDOT2", "...": "tDOT3", "[": "tLBRACK2", "]": "tRBRACK", "(": "tLPAREN2", ")": "tRPAREN", "?": "tEH", ":": "tCOLON", "&&": "tANDOP", "||": "tOROP", "-@": "tUMINUS", "+@": "tUPLUS", "~@": "tTILDE", "**": "tPOW", "->": "tLAMBDA", "=~": "tMATCH", "!~": "tNMATCH", "==": "tEQ", "!=": "tNEQ", ">": "tGT", ">>": "tRSHFT", ">=": "tGEQ", "<": "tLT", "<<": "tLSHFT", "<=": "tLEQ", "=>": "tASSOC", "::": "tCOLON2", "===": "tEQQ", "<=>": "tCMP", "[]": "tAREF", "[]=": "tASET", "{": "tLCURLY", "}": "tRCURLY", "`": "tBACK_REF2", "!@": "tBANG", "&.": "tANDDOT"}));
-    Opal.const_set($nesting[0], 'PUNCTUATION_BEGIN', $hash2(["&", "*", "**", "+", "-", "::", "(", "{", "["], {"&": "tAMPER", "*": "tSTAR", "**": "tDSTAR", "+": "tUPLUS", "-": "tUMINUS", "::": "tCOLON3", "(": "tLPAREN", "{": "tLBRACE", "[": "tLBRACK"}));
-    Opal.const_set($nesting[0], 'KEYWORDS', $hash2(["if", "unless", "while", "until", "rescue", "defined?", "BEGIN", "END"], {"if": "kIF_MOD", "unless": "kUNLESS_MOD", "while": "kWHILE_MOD", "until": "kUNTIL_MOD", "rescue": "kRESCUE_MOD", "defined?": "kDEFINED", "BEGIN": "klBEGIN", "END": "klEND"}));
-    Opal.const_set($nesting[0], 'KEYWORDS_BEGIN', $hash2(["if", "unless", "while", "until", "rescue", "defined?", "BEGIN", "END"], {"if": "kIF", "unless": "kUNLESS", "while": "kWHILE", "until": "kUNTIL", "rescue": "kRESCUE", "defined?": "kDEFINED", "BEGIN": "klBEGIN", "END": "klEND"}));
-    return $send(["class", "module", "def", "undef", "begin", "end", "then", "elsif", "else", "ensure", "case", "when", "for", "break", "next", "redo", "retry", "in", "do", "return", "yield", "super", "self", "nil", "true", "false", "and", "or", "not", "alias", "__FILE__", "__LINE__", "__ENCODING__"], 'each', [], ($Lexer$58 = function(keyword){var self = $Lexer$58.$$s == null ? this : $Lexer$58.$$s;
-
-      
-      
-      if (keyword == null) {
-        keyword = nil;
-      };
-      $writer = [keyword, (($writer = [keyword, "" + "k" + (keyword.$upcase())]), $send($$($nesting, 'KEYWORDS'), '[]=', Opal.to_a($writer)), $writer[$rb_minus($writer["length"], 1)])];
-      $send($$($nesting, 'KEYWORDS_BEGIN'), '[]=', Opal.to_a($writer));
-      return $writer[$rb_minus($writer["length"], 1)];}, $Lexer$58.$$s = self, $Lexer$58.$$arity = 1, $Lexer$58));
-  })($$($nesting, 'Parser'), null, $nesting)
+    }, 0);
+    $const_set($nesting[0], 'PUNCTUATION', $hash2(["=", "&", "|", "!", "^", "+", "-", "*", "/", "%", "~", ",", ";", ".", "..", "...", "[", "]", "(", ")", "?", ":", "&&", "||", "-@", "+@", "~@", "**", "->", "=~", "!~", "==", "!=", ">", ">>", ">=", "<", "<<", "<=", "=>", "::", "===", "<=>", "[]", "[]=", "{", "}", "`", "!@", "&."], {"=": "tEQL", "&": "tAMPER2", "|": "tPIPE", "!": "tBANG", "^": "tCARET", "+": "tPLUS", "-": "tMINUS", "*": "tSTAR2", "/": "tDIVIDE", "%": "tPERCENT", "~": "tTILDE", ",": "tCOMMA", ";": "tSEMI", ".": "tDOT", "..": "tDOT2", "...": "tDOT3", "[": "tLBRACK2", "]": "tRBRACK", "(": "tLPAREN2", ")": "tRPAREN", "?": "tEH", ":": "tCOLON", "&&": "tANDOP", "||": "tOROP", "-@": "tUMINUS", "+@": "tUPLUS", "~@": "tTILDE", "**": "tPOW", "->": "tLAMBDA", "=~": "tMATCH", "!~": "tNMATCH", "==": "tEQ", "!=": "tNEQ", ">": "tGT", ">>": "tRSHFT", ">=": "tGEQ", "<": "tLT", "<<": "tLSHFT", "<=": "tLEQ", "=>": "tASSOC", "::": "tCOLON2", "===": "tEQQ", "<=>": "tCMP", "[]": "tAREF", "[]=": "tASET", "{": "tLCURLY", "}": "tRCURLY", "`": "tBACK_REF2", "!@": "tBANG", "&.": "tANDDOT"}));
+    $const_set($nesting[0], 'PUNCTUATION_BEGIN', $hash2(["&", "*", "**", "+", "-", "::", "(", "{", "["], {"&": "tAMPER", "*": "tSTAR", "**": "tDSTAR", "+": "tUPLUS", "-": "tUMINUS", "::": "tCOLON3", "(": "tLPAREN", "{": "tLBRACE", "[": "tLBRACK"}));
+    $const_set($nesting[0], 'KEYWORDS', $hash2(["if", "unless", "while", "until", "rescue", "defined?", "BEGIN", "END"], {"if": "kIF_MOD", "unless": "kUNLESS_MOD", "while": "kWHILE_MOD", "until": "kUNTIL_MOD", "rescue": "kRESCUE_MOD", "defined?": "kDEFINED", "BEGIN": "klBEGIN", "END": "klEND"}));
+    $const_set($nesting[0], 'KEYWORDS_BEGIN', $hash2(["if", "unless", "while", "until", "rescue", "defined?", "BEGIN", "END"], {"if": "kIF", "unless": "kUNLESS", "while": "kWHILE", "until": "kUNTIL", "rescue": "kRESCUE", "defined?": "kDEFINED", "BEGIN": "klBEGIN", "END": "klEND"}));
+    return $send(["class", "module", "def", "undef", "begin", "end", "then", "elsif", "else", "ensure", "case", "when", "for", "break", "next", "redo", "retry", "in", "do", "return", "yield", "super", "self", "nil", "true", "false", "and", "or", "not", "alias", "__FILE__", "__LINE__", "__ENCODING__"], 'each', [], function $Lexer$34(keyword){
+      
+      
+      if (keyword == null) keyword = nil;;
+      $writer = [keyword, (($writer = [keyword, "k" + (keyword.$upcase())]), $send($$('KEYWORDS'), '[]=', $to_a($writer)), $writer[$rb_minus($writer["length"], 1)])];
+      $send($$('KEYWORDS_BEGIN'), '[]=', $to_a($writer));
+      return $writer[$rb_minus($writer["length"], 1)];}, 1);
+  })($$('Parser'), null, $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/lexer/literal"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $hash2 = Opal.hash2, $enc = Opal.enc, $truthy = Opal.truthy, $send = Opal.send;
-
-  Opal.add_stubs(['$attr_reader', '$attr_accessor', '$coerce_encoding', '$include?', '$send', '$+', '$[]', '$fetch', '$==', '$!', '$heredoc?', '$start_with?', '$freeze', '$clear_buffer', '$emit_start_tok', '$type', '$words?', '$=~', '$delimiter?', '$-', '$extend_space', '$!=', '$flush_string', '$emit', '$each_char', '$===', '$%', '$nil?', '$>', '$<<', '$empty?', '$extend_content', '$protected', '$lstrip', '$b', '$dup', '$force_encoding', '$encoding', '$source', '$source_buffer', '$length']);
+Opal.modules["parser/lexer/literal"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $const_set = Opal.const_set, $hash2 = Opal.hash2, $enc = Opal.enc, $truthy = Opal.truthy, $rb_plus = Opal.rb_plus, $to_ary = Opal.to_ary, $def = Opal.def, $eqeq = Opal.eqeq, $rb_minus = Opal.rb_minus, $neqeq = Opal.neqeq, $not = Opal.not, $send = Opal.send, $eqeqeq = Opal.eqeqeq, $rb_gt = Opal.rb_gt;
+
+  Opal.add_stubs('attr_reader,attr_accessor,coerce_encoding,include?,send,+,[],fetch,==,!,heredoc?,start_with?,freeze,clear_buffer,emit_start_tok,type,=~,words?,delimiter?,-,extend_space,!=,flush_string,emit,each_char,===,%,>,nil?,<<,empty?,extend_content,protected,lstrip,b,dup,force_encoding,encoding,source,source_buffer,length');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
-    var $nesting = [self].concat($parent_nesting);
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Literal');
 
-      var $nesting = [self].concat($parent_nesting), $Literal_initialize$1, $Literal_interpolate$ques$2, $Literal_words$ques$3, $Literal_regexp$ques$4, $Literal_heredoc$ques$5, $Literal_plain_heredoc$ques$6, $Literal_squiggly_heredoc$ques$7, $Literal_backslash_delimited$ques$8, $Literal_type$9, $Literal_munge_escape$ques$10, $Literal_nest_and_try_closing$11, $Literal_infer_indent_level$12, $Literal_start_interp_brace$14, $Literal_end_interp_brace_and_try_closing$15, $Literal_extend_string$16, $Literal_flush_string$17, $Literal_extend_content$18, $Literal_extend_space$19, $Literal_supports_line_continuation_via_slash$ques$20, $Literal_delimiter$ques$21, $Literal_coerce_encoding$22, $Literal_clear_buffer$23, $Literal_emit_start_tok$24, $Literal_emit$25;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.lexer = self.$$prototype.start_tok = self.$$prototype.str_type = self.$$prototype.monolithic = self.$$prototype.interpolate = self.$$prototype.heredoc_e = self.$$prototype.dedent_body = self.$$prototype.end_delim = self.$$prototype.start_delim = self.$$prototype.nesting = self.$$prototype.label_allowed = self.$$prototype.buffer = self.$$prototype.str_s = self.$$prototype.interp_braces = self.$$prototype.buffer_s = self.$$prototype.buffer_e = self.$$prototype.space_emitted = self.$$prototype.indent = nil;
+      $proto.lexer = $proto.start_tok = $proto.str_type = $proto.monolithic = $proto.interpolate = $proto.heredoc_e = $proto.dedent_body = $proto.end_delim = $proto.start_delim = $proto.nesting = $proto.label_allowed = $proto.buffer = $proto.str_s = $proto.interp_braces = $proto.buffer_s = $proto.buffer_e = $proto.space_emitted = $proto.indent = nil;
       
-      Opal.const_set($nesting[0], 'DELIMITERS', $hash2(["(", "[", "{", "<"], {"(": $enc(")", "ASCII-8BIT"), "[": $enc("]", "ASCII-8BIT"), "{": $enc("}", "ASCII-8BIT"), "<": $enc(">", "ASCII-8BIT")}));
-      Opal.const_set($nesting[0], 'TYPES', $hash2(["'", "<<'", "%q", "\"", "<<\"", "%", "%Q", "%w", "%W", "%i", "%I", ":'", "%s", ":\"", "/", "%r", "%x", "`", "<<`"], {"'": ["tSTRING_BEG", false], "<<'": ["tSTRING_BEG", false], "%q": ["tSTRING_BEG", false], "\"": ["tSTRING_BEG", true], "<<\"": ["tSTRING_BEG", true], "%": ["tSTRING_BEG", true], "%Q": ["tSTRING_BEG", true], "%w": ["tQWORDS_BEG", false], "%W": ["tWORDS_BEG", true], "%i": ["tQSYMBOLS_BEG", false], "%I": ["tSYMBOLS_BEG", true], ":'": ["tSYMBEG", false], "%s": ["tSYMBEG", false], ":\"": ["tSYMBEG", true], "/": ["tREGEXP_BEG", true], "%r": ["tREGEXP_BEG", true], "%x": ["tXSTRING_BEG", true], "`": ["tXSTRING_BEG", true], "<<`": ["tXSTRING_BEG", true]}));
+      $const_set($nesting[0], 'DELIMITERS', $hash2(["(", "[", "{", "<"], {"(": $enc(")", "ASCII-8BIT"), "[": $enc("]", "ASCII-8BIT"), "{": $enc("}", "ASCII-8BIT"), "<": $enc(">", "ASCII-8BIT")}));
+      $const_set($nesting[0], 'TYPES', $hash2(["'", "<<'", "%q", "\"", "<<\"", "%", "%Q", "%w", "%W", "%i", "%I", ":'", "%s", ":\"", "/", "%r", "%x", "`", "<<`"], {"'": ["tSTRING_BEG", false], "<<'": ["tSTRING_BEG", false], "%q": ["tSTRING_BEG", false], "\"": ["tSTRING_BEG", true], "<<\"": ["tSTRING_BEG", true], "%": ["tSTRING_BEG", true], "%Q": ["tSTRING_BEG", true], "%w": ["tQWORDS_BEG", false], "%W": ["tWORDS_BEG", true], "%i": ["tQSYMBOLS_BEG", false], "%I": ["tSYMBOLS_BEG", true], ":'": ["tSYMBEG", false], "%s": ["tSYMBEG", false], ":\"": ["tSYMBEG", true], "/": ["tREGEXP_BEG", true], "%r": ["tREGEXP_BEG", true], "%x": ["tXSTRING_BEG", true], "`": ["tXSTRING_BEG", true], "<<`": ["tXSTRING_BEG", true]}));
       self.$attr_reader("heredoc_e", "str_s", "dedent_level");
       self.$attr_accessor("saved_herebody_s");
       
-      Opal.def(self, '$initialize', $Literal_initialize$1 = function $$initialize(lexer, str_type, delimiter, str_s, heredoc_e, indent, dedent_body, label_allowed) {
+      $def(self, '$initialize', function $$initialize(lexer, str_type, delimiter, str_s, heredoc_e, indent, dedent_body, label_allowed) {
         var $a, $b, self = this, $ret_or_1 = nil, $ret_or_2 = nil;
 
         
         
-        if (heredoc_e == null) {
-          heredoc_e = nil;
-        };
+        if (heredoc_e == null) heredoc_e = nil;;
         
-        if (indent == null) {
-          indent = false;
-        };
+        if (indent == null) indent = false;;
         
-        if (dedent_body == null) {
-          dedent_body = false;
-        };
+        if (dedent_body == null) dedent_body = false;;
         
-        if (label_allowed == null) {
-          label_allowed = false;
-        };
+        if (label_allowed == null) label_allowed = false;;
         self.lexer = lexer;
         self.nesting = 1;
         str_type = self.$coerce_encoding(str_type);
         delimiter = self.$coerce_encoding(delimiter);
-        if ($truthy($$($nesting, 'TYPES')['$include?'](str_type))) {
-        } else {
+        if (!$truthy($$('TYPES')['$include?'](str_type))) {
           lexer.$send("diagnostic", "error", "unexpected_percent_str", $hash2(["type"], {"type": str_type}), self.lexer.$send("range", str_s, $rb_plus(str_s, 2)))
         };
         self.str_type = str_type;
         self.str_s = str_s;
-        $b = $$($nesting, 'TYPES')['$[]'](str_type), $a = Opal.to_ary($b), (self.start_tok = ($a[0] == null ? nil : $a[0])), (self.interpolate = ($a[1] == null ? nil : $a[1])), $b;
-        self.start_delim = (function() {if ($truthy($$($nesting, 'DELIMITERS')['$include?'](delimiter))) {
-          return delimiter
-        } else {
-          return nil
-        }; return nil; })();
-        self.end_delim = $$($nesting, 'DELIMITERS').$fetch(delimiter, delimiter);
+        $b = $$('TYPES')['$[]'](str_type), $a = $to_ary($b), (self.start_tok = ($a[0] == null ? nil : $a[0])), (self.interpolate = ($a[1] == null ? nil : $a[1])), $b;
+        self.start_delim = ($truthy($$('DELIMITERS')['$include?'](delimiter)) ? (delimiter) : (nil));
+        self.end_delim = $$('DELIMITERS').$fetch(delimiter, delimiter);
         self.heredoc_e = heredoc_e;
         self.indent = indent;
         self.label_allowed = label_allowed;
@@ -20139,147 +17281,108 @@ Opal.modules["parser/lexer/literal"] = function(Opal) {
         self.dedent_level = nil;
         self.interp_braces = 0;
         self.space_emitted = true;
-        self.monolithic = (function() {if ($truthy(($ret_or_1 = (function() {if ($truthy(($ret_or_2 = self.start_tok['$==']("tSTRING_BEG")))) {
-          return [$enc("'", "ASCII-8BIT"), $enc("\"", "ASCII-8BIT")]['$include?'](str_type)
-        } else {
-          return $ret_or_2
-        }; return nil; })()))) {
-          return self['$heredoc?']()['$!']()
-        } else {
-          return $ret_or_1
-        }; return nil; })();
+        self.monolithic = ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = self.start_tok['$==']("tSTRING_BEG"))) ? ([$enc("'", "ASCII-8BIT"), $enc("\"", "ASCII-8BIT")]['$include?'](str_type)) : ($ret_or_2)))) ? (self['$heredoc?']()['$!']()) : ($ret_or_1));
         if ($truthy(self.str_type['$start_with?']($enc("%", "ASCII-8BIT").$freeze()))) {
-          self.str_type = $rb_plus(self.str_type, delimiter)};
+          self.str_type = $rb_plus(self.str_type, delimiter)
+        };
         self.$clear_buffer();
         if ($truthy(self.monolithic)) {
           return nil
         } else {
           return self.$emit_start_tok()
         };
-      }, $Literal_initialize$1.$$arity = -5);
+      }, -5);
       
-      Opal.def(self, '$interpolate?', $Literal_interpolate$ques$2 = function() {
+      $def(self, '$interpolate?', function $Literal_interpolate$ques$1() {
         var self = this;
 
         return self.interpolate
-      }, $Literal_interpolate$ques$2.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$words?', $Literal_words$ques$3 = function() {
-        var self = this, $ret_or_3 = nil, $ret_or_4 = nil, $ret_or_5 = nil;
+      $def(self, '$words?', function $Literal_words$ques$2() {
+        var self = this, $ret_or_1 = nil, $ret_or_2 = nil, $ret_or_3 = nil;
 
-        if ($truthy(($ret_or_3 = (function() {if ($truthy(($ret_or_4 = (function() {if ($truthy(($ret_or_5 = self.$type()['$==']("tWORDS_BEG")))) {
-          return $ret_or_5
-        } else {
-          return self.$type()['$==']("tQWORDS_BEG")
-        }; return nil; })()))) {
-          return $ret_or_4
-        } else {
-          return self.$type()['$==']("tSYMBOLS_BEG")
-        }; return nil; })()))) {
-          return $ret_or_3
+        if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = ($truthy(($ret_or_3 = self.$type()['$==']("tWORDS_BEG"))) ? ($ret_or_3) : (self.$type()['$==']("tQWORDS_BEG"))))) ? ($ret_or_2) : (self.$type()['$==']("tSYMBOLS_BEG")))))) {
+          return $ret_or_1
         } else {
           return self.$type()['$==']("tQSYMBOLS_BEG")
         }
-      }, $Literal_words$ques$3.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$regexp?', $Literal_regexp$ques$4 = function() {
+      $def(self, '$regexp?', function $Literal_regexp$ques$3() {
         var self = this;
 
         return self.$type()['$==']("tREGEXP_BEG")
-      }, $Literal_regexp$ques$4.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$heredoc?', $Literal_heredoc$ques$5 = function() {
+      $def(self, '$heredoc?', function $Literal_heredoc$ques$4() {
         var self = this;
 
         return self.heredoc_e['$!']()['$!']()
-      }, $Literal_heredoc$ques$5.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$plain_heredoc?', $Literal_plain_heredoc$ques$6 = function() {
-        var self = this, $ret_or_6 = nil;
+      $def(self, '$plain_heredoc?', function $Literal_plain_heredoc$ques$5() {
+        var self = this, $ret_or_1 = nil;
 
-        if ($truthy(($ret_or_6 = self['$heredoc?']()))) {
+        if ($truthy(($ret_or_1 = self['$heredoc?']()))) {
           return self.dedent_body['$!']()
         } else {
-          return $ret_or_6
+          return $ret_or_1
         }
-      }, $Literal_plain_heredoc$ques$6.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$squiggly_heredoc?', $Literal_squiggly_heredoc$ques$7 = function() {
-        var self = this, $ret_or_7 = nil;
+      $def(self, '$squiggly_heredoc?', function $Literal_squiggly_heredoc$ques$6() {
+        var self = this, $ret_or_1 = nil;
 
-        if ($truthy(($ret_or_7 = self['$heredoc?']()))) {
+        if ($truthy(($ret_or_1 = self['$heredoc?']()))) {
           return self.dedent_body
         } else {
-          return $ret_or_7
+          return $ret_or_1
         }
-      }, $Literal_squiggly_heredoc$ques$7.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$backslash_delimited?', $Literal_backslash_delimited$ques$8 = function() {
+      $def(self, '$backslash_delimited?', function $Literal_backslash_delimited$ques$7() {
         var self = this;
 
         return self.end_delim['$==']($enc("\\", "ASCII-8BIT").$freeze())
-      }, $Literal_backslash_delimited$ques$8.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$type', $Literal_type$9 = function $$type() {
+      $def(self, '$type', function $$type() {
         var self = this;
 
         return self.start_tok
-      }, $Literal_type$9.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$munge_escape?', $Literal_munge_escape$ques$10 = function(character) {
-        var self = this, $ret_or_8 = nil;
+      $def(self, '$munge_escape?', function $Literal_munge_escape$ques$8(character) {
+        var self = this;
 
         
         character = self.$coerce_encoding(character);
-        if ($truthy((function() {if ($truthy(($ret_or_8 = self['$words?']()))) {
-          return character['$=~'](/[ \t\v\r\f\n]/)
-        } else {
-          return $ret_or_8
-        }; return nil; })())) {
+        if (($truthy(self['$words?']()) && ($truthy(character['$=~'](/[ \t\v\r\f\n]/))))) {
           return true
         } else {
           return [$enc("\\", "ASCII-8BIT").$freeze(), self.start_delim, self.end_delim]['$include?'](character)
         };
-      }, $Literal_munge_escape$ques$10.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$nest_and_try_closing', $Literal_nest_and_try_closing$11 = function $$nest_and_try_closing(delimiter, ts, te, lookahead) {
-        var self = this, $ret_or_9 = nil, $ret_or_10 = nil, $ret_or_11 = nil, $ret_or_12 = nil, $ret_or_13 = nil;
+      $def(self, '$nest_and_try_closing', function $$nest_and_try_closing(delimiter, ts, te, lookahead) {
+        var self = this;
 
         
         
-        if (lookahead == null) {
-          lookahead = nil;
-        };
+        if (lookahead == null) lookahead = nil;;
         delimiter = self.$coerce_encoding(delimiter);
-        if ($truthy((function() {if ($truthy(($ret_or_9 = self.start_delim))) {
-          return self.start_delim['$=='](delimiter)
-        } else {
-          return $ret_or_9
-        }; return nil; })())) {
+        if (($truthy(self.start_delim) && ($eqeq(self.start_delim, delimiter)))) {
           self.nesting = $rb_plus(self.nesting, 1)
         } else if ($truthy(self['$delimiter?'](delimiter))) {
-          self.nesting = $rb_minus(self.nesting, 1)};
-        if (self.nesting['$=='](0)) {
+          self.nesting = $rb_minus(self.nesting, 1)
+        };
+        if ($eqeq(self.nesting, 0)) {
           
           if ($truthy(self['$words?']())) {
-            self.$extend_space(ts, ts)};
-          if ($truthy((function() {if ($truthy(($ret_or_10 = (function() {if ($truthy(($ret_or_11 = (function() {if ($truthy(($ret_or_12 = (function() {if ($truthy(($ret_or_13 = lookahead))) {
-            return self.label_allowed
-          } else {
-            return $ret_or_13
-          }; return nil; })()))) {
-            return lookahead['$[]'](0)['$==']($enc(":", "ASCII-8BIT"))
-          } else {
-            return $ret_or_12
-          }; return nil; })()))) {
-            return lookahead['$[]'](1)['$!=']($enc(":", "ASCII-8BIT"))
-          } else {
-            return $ret_or_11
-          }; return nil; })()))) {
-            return self.start_tok['$==']("tSTRING_BEG")
-          } else {
-            return $ret_or_10
-          }; return nil; })())) {
+            self.$extend_space(ts, ts)
+          };
+          if ((((($truthy(lookahead) && ($truthy(self.label_allowed))) && ($eqeq(lookahead['$[]'](0), $enc(":", "ASCII-8BIT")))) && ($neqeq(lookahead['$[]'](1), $enc(":", "ASCII-8BIT")))) && ($eqeq(self.start_tok, "tSTRING_BEG")))) {
             
             self.$flush_string();
             return self.$emit("tLABEL_END", self.end_delim, ts, $rb_plus(te, 1));
@@ -20287,8 +17390,7 @@ Opal.modules["parser/lexer/literal"] = function(Opal) {
             return self.$emit("tSTRING", self.buffer, self.str_s, te)
           } else {
             
-            if ($truthy(self['$heredoc?']())) {
-            } else {
+            if (!$truthy(self['$heredoc?']())) {
               self.$flush_string()
             };
             return self.$emit("tSTRING_END", self.end_delim, ts, te);
@@ -20296,74 +17398,70 @@ Opal.modules["parser/lexer/literal"] = function(Opal) {
         } else {
           return nil
         };
-      }, $Literal_nest_and_try_closing$11.$$arity = -4);
+      }, -4);
       
-      Opal.def(self, '$infer_indent_level', $Literal_infer_indent_level$12 = function $$infer_indent_level(line) {
-        var $$13, self = this, indent_level = nil;
+      $def(self, '$infer_indent_level', function $$infer_indent_level(line) {
+        var self = this, indent_level = nil;
 
         
-        if ($truthy(self.dedent_body['$!']())) {
-          return nil};
+        if ($not(self.dedent_body)) {
+          return nil
+        };
         indent_level = 0;
-        return (function(){var $brk = Opal.new_brk(); try {return $send(line, 'each_char', [], ($$13 = function(char$){var self = $$13.$$s == null ? this : $$13.$$s, $case = nil, $ret_or_14 = nil;
+        return (function(){var $brk = Opal.new_brk(); try {return $send(line, 'each_char', [], function $$9(char$){var self = $$9.$$s == null ? this : $$9.$$s, $ret_or_1 = nil;
           if (self.dedent_level == null) self.dedent_level = nil;
 
           
           
-          if (char$ == null) {
-            char$ = nil;
-          };
-          return (function() {$case = char$;
-          if (" "['$===']($case)) {return (indent_level = $rb_plus(indent_level, 1))}
-          else if ("\t"['$===']($case)) {return (indent_level = $rb_plus(indent_level, $rb_minus(8, indent_level['$%'](8))))}
-          else {
-          if ($truthy((function() {if ($truthy(($ret_or_14 = self.dedent_level['$nil?']()))) {
-            return $ret_or_14
+          if (char$ == null) char$ = nil;;
+          if ($eqeqeq(" ", ($ret_or_1 = char$))) {
+            return (indent_level = $rb_plus(indent_level, 1))
+          } else if ($eqeqeq("\t", $ret_or_1)) {
+            return (indent_level = $rb_plus(indent_level, $rb_minus(8, indent_level['$%'](8))))
           } else {
-            return $rb_gt(self.dedent_level, indent_level)
-          }; return nil; })())) {
-            self.dedent_level = indent_level};
-          
-          Opal.brk(nil, $brk);}})();}, $$13.$$s = self, $$13.$$brk = $brk, $$13.$$arity = 1, $$13))
+            
+            if (($truthy(self.dedent_level['$nil?']()) || ($truthy($rb_gt(self.dedent_level, indent_level))))) {
+              self.dedent_level = indent_level
+            };
+            
+            Opal.brk(nil, $brk);
+          };}, {$$arity: 1, $$s: self, $$brk: $brk})
         } catch (err) { if (err === $brk) { return err.$v } else { throw err } }})();
-      }, $Literal_infer_indent_level$12.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$start_interp_brace', $Literal_start_interp_brace$14 = function $$start_interp_brace() {
+      $def(self, '$start_interp_brace', function $$start_interp_brace() {
         var self = this;
 
         return (self.interp_braces = $rb_plus(self.interp_braces, 1))
-      }, $Literal_start_interp_brace$14.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$end_interp_brace_and_try_closing', $Literal_end_interp_brace_and_try_closing$15 = function $$end_interp_brace_and_try_closing() {
+      $def(self, '$end_interp_brace_and_try_closing', function $$end_interp_brace_and_try_closing() {
         var self = this;
 
         
         self.interp_braces = $rb_minus(self.interp_braces, 1);
         
         return self.interp_braces['$=='](0);;
-      }, $Literal_end_interp_brace_and_try_closing$15.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$extend_string', $Literal_extend_string$16 = function $$extend_string(string, ts, te) {
-        var self = this, $ret_or_15 = nil;
+      $def(self, '$extend_string', function $$extend_string(string, ts, te) {
+        var self = this, $ret_or_1 = nil;
 
         
-        self.buffer_s = (function() {if ($truthy(($ret_or_15 = self.buffer_s))) {
-          return $ret_or_15
-        } else {
-          return ts
-        }; return nil; })();
+        self.buffer_s = ($truthy(($ret_or_1 = self.buffer_s)) ? ($ret_or_1) : (ts));
         self.buffer_e = te;
         return self.buffer['$<<'](string);
-      }, $Literal_extend_string$16.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$flush_string', $Literal_flush_string$17 = function $$flush_string() {
+      $def(self, '$flush_string', function $$flush_string() {
         var self = this;
 
         
         if ($truthy(self.monolithic)) {
           
           self.$emit_start_tok();
-          self.monolithic = false;};
+          self.monolithic = false;
+        };
         if ($truthy(self.buffer['$empty?']())) {
           return nil
         } else {
@@ -20372,15 +17470,15 @@ Opal.modules["parser/lexer/literal"] = function(Opal) {
           self.$clear_buffer();
           return self.$extend_content();
         };
-      }, $Literal_flush_string$17.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$extend_content', $Literal_extend_content$18 = function $$extend_content() {
+      $def(self, '$extend_content', function $$extend_content() {
         var self = this;
 
         return (self.space_emitted = false)
-      }, $Literal_extend_content$18.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$extend_space', $Literal_extend_space$19 = function $$extend_space(ts, te) {
+      $def(self, '$extend_space', function $$extend_space(ts, te) {
         var self = this;
 
         
@@ -20392,20 +17490,20 @@ Opal.modules["parser/lexer/literal"] = function(Opal) {
           self.$emit("tSPACE", nil, ts, te);
           return (self.space_emitted = true);
         };
-      }, $Literal_extend_space$19.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$supports_line_continuation_via_slash?', $Literal_supports_line_continuation_via_slash$ques$20 = function() {
-        var self = this, $ret_or_16 = nil;
+      $def(self, '$supports_line_continuation_via_slash?', function $Literal_supports_line_continuation_via_slash$ques$10() {
+        var self = this, $ret_or_1 = nil;
 
-        if ($truthy(($ret_or_16 = self['$words?']()['$!']()))) {
+        if ($truthy(($ret_or_1 = self['$words?']()['$!']()))) {
           return self.interpolate
         } else {
-          return $ret_or_16
+          return $ret_or_1
         }
-      }, $Literal_supports_line_continuation_via_slash$ques$20.$$arity = 0);
+      }, 0);
       self.$protected();
       
-      Opal.def(self, '$delimiter?', $Literal_delimiter$ques$21 = function(delimiter) {
+      $def(self, '$delimiter?', function $Literal_delimiter$ques$11(delimiter) {
         var self = this;
 
         if ($truthy(self.indent)) {
@@ -20413,15 +17511,14 @@ Opal.modules["parser/lexer/literal"] = function(Opal) {
         } else {
           return self.end_delim['$=='](delimiter)
         }
-      }, $Literal_delimiter$ques$21.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$coerce_encoding', $Literal_coerce_encoding$22 = function $$coerce_encoding(string) {
-        var self = this;
-
+      $def(self, '$coerce_encoding', function $$coerce_encoding(string) {
+        
         return string.$b()
-      }, $Literal_coerce_encoding$22.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$clear_buffer', $Literal_clear_buffer$23 = function $$clear_buffer() {
+      $def(self, '$clear_buffer', function $$clear_buffer() {
         var self = this;
 
         
@@ -20429,316 +17526,258 @@ Opal.modules["parser/lexer/literal"] = function(Opal) {
         self.buffer.$force_encoding(self.lexer.$source_buffer().$source().$encoding());
         self.buffer_s = nil;
         return (self.buffer_e = nil);
-      }, $Literal_clear_buffer$23.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$emit_start_tok', $Literal_emit_start_tok$24 = function $$emit_start_tok() {
-        var self = this, str_e = nil, $ret_or_17 = nil;
+      $def(self, '$emit_start_tok', function $$emit_start_tok() {
+        var self = this, str_e = nil, $ret_or_1 = nil;
 
         
-        str_e = (function() {if ($truthy(($ret_or_17 = self.heredoc_e))) {
-          return $ret_or_17
-        } else {
-          return $rb_plus(self.str_s, self.str_type.$length())
-        }; return nil; })();
+        str_e = ($truthy(($ret_or_1 = self.heredoc_e)) ? ($ret_or_1) : ($rb_plus(self.str_s, self.str_type.$length())));
         return self.$emit(self.start_tok, self.str_type, self.str_s, str_e);
-      }, $Literal_emit_start_tok$24.$$arity = 0);
-      return (Opal.def(self, '$emit', $Literal_emit$25 = function $$emit(token, type, s, e) {
+      }, 0);
+      return $def(self, '$emit', function $$emit(token, type, s, e) {
         var self = this;
 
         return self.lexer.$send("emit", token, type, s, e)
-      }, $Literal_emit$25.$$arity = 4), nil) && 'emit';
-    })($$($nesting, 'Lexer'), null, $nesting)
+      }, 4);
+    })($$('Lexer'), null, $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/lexer/stack_state"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $alias = Opal.alias;
+Opal.modules["parser/lexer/stack_state"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $def = Opal.def, $truthy = Opal.truthy, $alias = Opal.alias;
 
-  Opal.add_stubs(['$freeze', '$clear', '$|', '$<<', '$&', '$>>', '$==', '$[]', '$to_s']);
+  Opal.add_stubs('freeze,clear,|,<<,&,>>,==,[],to_s');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
-    var $nesting = [self].concat($parent_nesting);
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-    return (function($base, $super, $parent_nesting) {
+    return (function($base, $super) {
       var self = $klass($base, $super, 'StackState');
 
-      var $nesting = [self].concat($parent_nesting), $StackState_initialize$1, $StackState_clear$2, $StackState_push$3, $StackState_pop$4, $StackState_lexpop$5, $StackState_active$ques$6, $StackState_empty$ques$7, $StackState_to_s$8;
+      var $proto = self.$$prototype;
 
-      self.$$prototype.stack = self.$$prototype.name = nil;
+      $proto.stack = $proto.name = nil;
       
       
-      Opal.def(self, '$initialize', $StackState_initialize$1 = function $$initialize(name) {
+      $def(self, '$initialize', function $$initialize(name) {
         var self = this;
 
         
         self.name = name.$freeze();
         return self.$clear();
-      }, $StackState_initialize$1.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$clear', $StackState_clear$2 = function $$clear() {
+      $def(self, '$clear', function $$clear() {
         var self = this;
 
         return (self.stack = 0)
-      }, $StackState_clear$2.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$push', $StackState_push$3 = function $$push(bit) {
+      $def(self, '$push', function $$push(bit) {
         var self = this, bit_value = nil;
 
         
-        bit_value = (function() {if ($truthy(bit)) {
-          return 1
-        } else {
-          return 0
-        }; return nil; })();
+        bit_value = ($truthy(bit) ? (1) : (0));
         self.stack = self.stack['$<<'](1)['$|'](bit_value);
         return bit;
-      }, $StackState_push$3.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$pop', $StackState_pop$4 = function $$pop() {
+      $def(self, '$pop', function $$pop() {
         var self = this, bit_value = nil;
 
         
         bit_value = self.stack['$&'](1);
         self.stack = self.stack['$>>'](1);
         return bit_value['$=='](1);
-      }, $StackState_pop$4.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$lexpop', $StackState_lexpop$5 = function $$lexpop() {
+      $def(self, '$lexpop', function $$lexpop() {
         var self = this;
 
         
         self.stack = self.stack['$>>'](1)['$|'](self.stack['$&'](1));
         return self.stack['$[]'](0)['$=='](1);
-      }, $StackState_lexpop$5.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$active?', $StackState_active$ques$6 = function() {
+      $def(self, '$active?', function $StackState_active$ques$1() {
         var self = this;
 
         return self.stack['$[]'](0)['$=='](1)
-      }, $StackState_active$ques$6.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$empty?', $StackState_empty$ques$7 = function() {
+      $def(self, '$empty?', function $StackState_empty$ques$2() {
         var self = this;
 
         return self.stack['$=='](0)
-      }, $StackState_empty$ques$7.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$to_s', $StackState_to_s$8 = function $$to_s() {
+      $def(self, '$to_s', function $$to_s() {
         var self = this;
 
-        return "" + "[" + (self.stack.$to_s(2)) + " <= " + (self.name) + "]"
-      }, $StackState_to_s$8.$$arity = 0);
+        return "[" + (self.stack.$to_s(2)) + " <= " + (self.name) + "]"
+      }, 0);
       return $alias(self, "inspect", "to_s");
-    })($$($nesting, 'Lexer'), null, $nesting)
+    })($$('Lexer'), null)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/lexer/dedenter"] = function(Opal) {
-  function $rb_le(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs <= rhs : lhs['$<='](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_times(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs * rhs : lhs['$*'](rhs);
-  }
-  function $rb_divide(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs / rhs : lhs['$/'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy, $slice = Opal.slice;
-
-  Opal.add_stubs(['$encoding', '$split', '$force_encoding', '$==', '$length', '$map!', '$each', '$each_char', '$<=', '$===', '$+', '$-', '$>', '$*', '$/', '$slice!', '$replace', '$join', '$end_with?']);
+Opal.modules["parser/lexer/dedenter"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $const_set = Opal.const_set, $def = Opal.def, $eqeq = Opal.eqeq, $send = Opal.send, $truthy = Opal.truthy, $to_ary = Opal.to_ary, $slice = Opal.slice, $rb_le = Opal.rb_le, $eqeqeq = Opal.eqeqeq, $rb_plus = Opal.rb_plus, $rb_minus = Opal.rb_minus, $rb_gt = Opal.rb_gt, $rb_times = Opal.rb_times, $rb_divide = Opal.rb_divide;
+
+  Opal.add_stubs('encoding,split,force_encoding,==,length,map!,each,each_char,<=,===,+,-,>,*,/,slice!,replace,join,end_with?');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
-    var $nesting = [self].concat($parent_nesting);
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Dedenter');
 
-      var $nesting = [self].concat($parent_nesting), $Dedenter_initialize$1, $Dedenter_dedent$2, $Dedenter_interrupt$6;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.at_line_begin = nil;
+      $proto.at_line_begin = nil;
       
-      Opal.const_set($nesting[0], 'TAB_WIDTH', 8);
+      $const_set($nesting[0], 'TAB_WIDTH', 8);
       
-      Opal.def(self, '$initialize', $Dedenter_initialize$1 = function $$initialize(dedent_level) {
+      $def(self, '$initialize', function $$initialize(dedent_level) {
         var self = this;
 
         
         self.dedent_level = dedent_level;
         self.at_line_begin = true;
         return (self.indent_level = 0);
-      }, $Dedenter_initialize$1.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$dedent', $Dedenter_dedent$2 = function $$dedent(string) {
-        var $$3, $a, $b, $$4, self = this, original_encoding = nil, lines = nil, lines_to_dedent = nil, _first = nil;
+      $def(self, '$dedent', function $$dedent(string) {
+        var $a, $b, self = this, original_encoding = nil, lines = nil, lines_to_dedent = nil, _first = nil;
 
         
         original_encoding = string.$encoding();
-        lines = string.$force_encoding($$$($$($nesting, 'Encoding'), 'BINARY')).$split("\\\n");
-        if (lines.$length()['$=='](1)) {
+        lines = string.$force_encoding($$$($$('Encoding'), 'BINARY')).$split("\\\n");
+        if ($eqeq(lines.$length(), 1)) {
           lines = [string.$force_encoding(original_encoding)]
         } else {
-          $send(lines, 'map!', [], ($$3 = function(s){var self = $$3.$$s == null ? this : $$3.$$s;
-
+          $send(lines, 'map!', [], function $$1(s){
             
             
-            if (s == null) {
-              s = nil;
-            };
-            return s.$force_encoding(original_encoding);}, $$3.$$s = self, $$3.$$arity = 1, $$3))
+            if (s == null) s = nil;;
+            return s.$force_encoding(original_encoding);}, 1)
         };
         if ($truthy(self.at_line_begin)) {
           lines_to_dedent = lines
         } else {
-          $b = lines, $a = Opal.to_ary($b), (_first = ($a[0] == null ? nil : $a[0])), (lines_to_dedent = $slice.call($a, 1)), $b
+          $b = lines, $a = $to_ary($b), (_first = ($a[0] == null ? nil : $a[0])), (lines_to_dedent = $slice.call($a, 1)), $b
         };
-        (function(){var $brk = Opal.new_brk(); try {return $send(lines_to_dedent, 'each', [], ($$4 = function(line){var self = $$4.$$s == null ? this : $$4.$$s, $$5, left_to_remove = nil, remove = nil;
+        (function(){var $brk = Opal.new_brk(); try {return $send(lines_to_dedent, 'each', [], function $$2(line){var self = $$2.$$s == null ? this : $$2.$$s, left_to_remove = nil, remove = nil;
           if (self.dedent_level == null) self.dedent_level = nil;
 
           
           
-          if (line == null) {
-            line = nil;
-          };
+          if (line == null) line = nil;;
           left_to_remove = self.dedent_level;
           remove = 0;
-          (function(){var $brk = Opal.new_brk(); try {return $send(line, 'each_char', [], ($$5 = function(char$){var self = $$5.$$s == null ? this : $$5.$$s, $case = nil;
+          (function(){var $brk = Opal.new_brk(); try {return $send(line, 'each_char', [], function $$3(char$){var self = $$3.$$s == null ? this : $$3.$$s, $ret_or_1 = nil;
             if (self.dedent_level == null) self.dedent_level = nil;
 
             
             
-            if (char$ == null) {
-              char$ = nil;
-            };
+            if (char$ == null) char$ = nil;;
             if ($truthy($rb_le(left_to_remove, 0))) {
               
-              Opal.brk(nil, $brk)};
-            return (function() {$case = char$;
-            if (" "['$===']($case)) {
-            remove = $rb_plus(remove, 1);
-            return (left_to_remove = $rb_minus(left_to_remove, 1));}
-            else if ("\t"['$===']($case)) {
-            if ($truthy($rb_gt($rb_times($$($nesting, 'TAB_WIDTH'), $rb_plus($rb_divide(remove, $$($nesting, 'TAB_WIDTH')), 1)), self.dedent_level))) {
+              Opal.brk(nil, $brk)
+            };
+            if ($eqeqeq(" ", ($ret_or_1 = char$))) {
               
-              Opal.brk(nil, $brk)};
-            remove = $rb_plus(remove, 1);
-            return (left_to_remove = $rb_minus(left_to_remove, $$($nesting, 'TAB_WIDTH')));}
-            else {
-            Opal.brk(nil, $brk)}})();}, $$5.$$s = self, $$5.$$brk = $brk, $$5.$$arity = 1, $$5))
+              remove = $rb_plus(remove, 1);
+              return (left_to_remove = $rb_minus(left_to_remove, 1));
+            } else if ($eqeqeq("\t", $ret_or_1)) {
+              
+              if ($truthy($rb_gt($rb_times($$('TAB_WIDTH'), $rb_plus($rb_divide(remove, $$('TAB_WIDTH')), 1)), self.dedent_level))) {
+                
+                Opal.brk(nil, $brk)
+              };
+              remove = $rb_plus(remove, 1);
+              return (left_to_remove = $rb_minus(left_to_remove, $$('TAB_WIDTH')));
+            } else {
+              
+              Opal.brk(nil, $brk)
+            };}, {$$arity: 1, $$s: self, $$brk: $brk})
           } catch (err) { if (err === $brk) { return err.$v } else { throw err } }})();
-          return line['$slice!'](0, remove);}, $$4.$$s = self, $$4.$$brk = $brk, $$4.$$arity = 1, $$4))
+          return line['$slice!'](0, remove);}, {$$arity: 1, $$s: self, $$brk: $brk})
         } catch (err) { if (err === $brk) { return err.$v } else { throw err } }})();
         string.$replace(lines.$join());
         return (self.at_line_begin = string['$end_with?']("\n"));
-      }, $Dedenter_dedent$2.$$arity = 1);
-      return (Opal.def(self, '$interrupt', $Dedenter_interrupt$6 = function $$interrupt() {
+      }, 1);
+      return $def(self, '$interrupt', function $$interrupt() {
         var self = this;
 
         return (self.at_line_begin = false)
-      }, $Dedenter_interrupt$6.$$arity = 0), nil) && 'interrupt';
-    })($$($nesting, 'Lexer'), null, $nesting)
+      }, 0);
+    })($$('Lexer'), null, $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/builders/default"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_ge(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs >= rhs : lhs['$>='](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_le(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs <= rhs : lhs['$<='](rhs);
-  }
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $hash2 = Opal.hash2, $truthy = Opal.truthy, $send = Opal.send, $range = Opal.range, $slice = Opal.slice;
-
-  Opal.add_stubs(['$attr_accessor', '$n0', '$token_map', '$numeric', '$n', '$value', '$new', '$loc', '$private', '$===', '$+@', '$-@', '$updated', '$join', '$expression', '$string_value', '$delimited_string_map', '$unquoted_map', '$collapse_string_parts?', '$nil?', '$first', '$children', '$string_map', '$prefix_string_map', '$to_sym', '$collection_map', '$==', '$version', '$empty?', '$diagnostic', '$!', '$type', '$dedent', '$map', '$interrupt', '$compact', '$uniq', '$sort', '$each_char', '$to_proc', '$static_regexp', '$message', '$<<', '$regexp_map', '$unary_op_map', '$binary_op_map', '$!=', '$%', '$size', '$last', '$each_slice', '$pair_keyword_map', '$pair_quoted_map', '$symbol_compose', '$adjust', '$=~', '$pair_keyword', '$accessible', '$upto', '$-', '$length', '$+', '$[]', '$>=', '$range_map', '$variable_map', '$name', '$source_buffer', '$dup', '$line', '$emit_encoding', '$class', '$any?', '$end_with?', '$to_s', '$try_declare_numparam', '$declared?', '$static_env', '$var_send_map', '$top', '$current_arg_stack', '$parser', '$constant_map', '$in_def', '$context', '$check_assignment_to_numparam', '$check_reserved_for_numparam', '$declare', '$with_expression', '$with_operator', '$join_exprs', '$module_definition_map', '$definition_map', '$endless_definition_map', '$validate_definee', '$keyword_map', '$check_duplicate_args', '$validate_no_forward_arg_after_restarg', '$emit_forward_arg', '$forward_arg', '$arg_prefix_map', '$kwarg_map', '$emit_procarg0', '$emit_arg_inside_procarg0', '$location', '$resize', '$end', '$call_type_for_dot', '$emit_kwargs', '$rewrite_hash_args_to_kwargs', '$send_map', '$emit_lambda', '$expr_map', '$keyword', '$include?', '$block_map', '$array', '$emit_index', '$index_map', '$send_index_map', '$send_binary_op_map', '$static_regexp_node', '$each', '$names', '$send_unary_op_map', '$check_condition', '$condition_map', '$keyword_mod_map', '$ternary_map', '$for_map', '$>', '$count', '$rescue_body_map', '$eh_keyword_map', '$push', '$none?', '$one?', '$begin', '$guard_map', '$check_lvar_name', '$check_duplicate_pattern_variable', '$match_hash_var_from_str', '$match_var', '$check_duplicate_pattern_key', '$static_string', '$pair_quoted', '$match_hash_var', '$<=', '$check_duplicate_arg', '$is_a?', '$[]=', '$arg_name_collides?', '$<', '$in_dynamic_block?', '$has_numparams?', '$max_numparam_stack', '$start_with?', '$pattern_variables', '$pattern_hash_keys', '$with', '$begin_pos', '$end_pos', '$encode', '$valid_encoding?', '$process', '$diagnostics', '$send', '$kwargs?']);
+Opal.modules["parser/builders/default"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $def = Opal.def, $to_a = Opal.to_a, $eqeqeq = Opal.eqeqeq, $hash2 = Opal.hash2, $truthy = Opal.truthy, $eqeq = Opal.eqeq, $not = Opal.not, $send = Opal.send, $neqeq = Opal.neqeq, $to_ary = Opal.to_ary, $rb_minus = Opal.rb_minus, $rb_plus = Opal.rb_plus, $rb_ge = Opal.rb_ge, $range = Opal.range, $slice = Opal.slice, $rb_gt = Opal.rb_gt, $rb_le = Opal.rb_le, $rb_lt = Opal.rb_lt;
+
+  Opal.add_stubs('attr_accessor,n0,token_map,numeric,n,value,new,loc,private,===,+@,-@,updated,join,expression,string_value,delimited_string_map,unquoted_map,collapse_string_parts?,nil?,first,children,string_map,prefix_string_map,to_sym,collection_map,empty?,==,version,diagnostic,!,type,dedent,map,interrupt,compact,uniq,sort,each_char,to_proc,static_regexp,message,<<,regexp_map,unary_op_map,binary_op_map,!=,%,size,last,each_slice,pair_keyword_map,pair_quoted_map,symbol_compose,adjust,=~,pair_keyword,accessible,upto,-,length,+,[],>=,range_map,variable_map,name,source_buffer,dup,line,emit_encoding,class,any?,end_with?,to_s,try_declare_numparam,declared?,static_env,var_send_map,top,current_arg_stack,parser,constant_map,in_def,context,check_assignment_to_numparam,check_reserved_for_numparam,declare,with_expression,with_operator,join_exprs,module_definition_map,definition_map,endless_definition_map,validate_definee,keyword_map,check_duplicate_args,validate_no_forward_arg_after_restarg,emit_forward_arg,forward_arg,arg_prefix_map,kwarg_map,emit_procarg0,emit_arg_inside_procarg0,location,resize,end,call_type_for_dot,emit_kwargs,rewrite_hash_args_to_kwargs,send_map,emit_lambda,expr_map,keyword,include?,block_map,array,emit_index,index_map,send_index_map,send_binary_op_map,static_regexp_node,each,names,send_unary_op_map,check_condition,condition_map,keyword_mod_map,ternary_map,for_map,>,count,rescue_body_map,eh_keyword_map,push,none?,one?,begin,guard_map,check_lvar_name,check_duplicate_pattern_variable,match_hash_var_from_str,match_var,check_duplicate_pattern_key,static_string,pair_quoted,match_hash_var,<=,check_duplicate_arg,is_a?,[]=,arg_name_collides?,<,in_dynamic_block?,has_numparams?,max_numparam_stack,start_with?,pattern_variables,pattern_hash_keys,with,begin_pos,end_pos,encode,valid_encoding?,process,diagnostics,send,kwargs?');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
-    var $nesting = [self].concat($parent_nesting);
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Default');
 
-      var $nesting = [self].concat($parent_nesting), $Default_initialize$2, $Default_nil$3, $Default_true$4, $Default_false$5, $Default_integer$6, $Default_float$7, $Default_rational$8, $Default_complex$9, $Default_numeric$10, $Default_unary_num$11, $Default___LINE__$12, $Default_string$13, $Default_string_internal$14, $Default_string_compose$15, $Default_character$16, $Default___FILE__$17, $Default_symbol$18, $Default_symbol_internal$19, $Default_symbol_compose$20, $Default_xstring_compose$21, $Default_dedent_string$22, $Default_regexp_options$24, $Default_regexp_compose$25, $Default_array$26, $Default_splat$27, $Default_word$28, $Default_words_compose$29, $Default_symbols_compose$30, $Default_pair$32, $Default_pair_list_18$33, $Default_pair_keyword$35, $Default_pair_quoted$36, $Default_pair_label$37, $Default_kwsplat$38, $Default_associate$39, $Default_range_inclusive$42, $Default_range_exclusive$43, $Default_self$44, $Default_ident$45, $Default_ivar$46, $Default_gvar$47, $Default_cvar$48, $Default_back_ref$49, $Default_nth_ref$50, $Default_accessible$51, $Default_const$53, $Default_const_global$54, $Default_const_fetch$55, $Default___ENCODING__$56, $Default_assignable$57, $Default_const_op_assignable$58, $Default_assign$59, $Default_op_assign$60, $Default_multi_lhs$61, $Default_multi_assign$62, $Default_def_class$63, $Default_def_sclass$64, $Default_def_module$65, $Default_def_method$66, $Default_def_endless_method$67, $Default_def_singleton$68, $Default_def_endless_singleton$69, $Default_undef_method$70, $Default_alias$71, $Default_args$72, $Default_numargs$73, $Default_forward_only_args$74, $Default_forward_arg$75, $Default_arg$76, $Default_optarg$77, $Default_restarg$78, $Default_kwarg$79, $Default_kwoptarg$80, $Default_kwrestarg$81, $Default_kwnilarg$82, $Default_shadowarg$83, $Default_blockarg$84, $Default_procarg0$85, $Default_arg_expr$86, $Default_restarg_expr$87, $Default_blockarg_expr$88, $Default_objc_kwarg$89, $Default_objc_restarg$90, $Default_call_type_for_dot$91, $Default_forwarded_args$92, $Default_call_method$93, $Default_call_lambda$94, $Default_block$95, $Default_block_pass$96, $Default_objc_varargs$97, $Default_attr_asgn$98, $Default_index$99, $Default_index_asgn$100, $Default_binary_op$101, $Default_match_op$102, $Default_unary_op$104, $Default_not_op$105, $Default_logical_op$106, $Default_condition$107, $Default_condition_mod$108, $Default_ternary$109, $Default_when$110, $Default_case$111, $Default_loop$112, $Default_loop_mod$113, $Default_for$114, $Default_keyword_cmd$115, $Default_preexe$116, $Default_postexe$117, $Default_rescue_body$118, $Default_begin_body$119, $Default_compstmt$120, $Default_begin$121, $Default_begin_keyword$122, $Default_case_match$123, $Default_in_match$124, $Default_match_pattern$125, $Default_match_pattern_p$126, $Default_in_pattern$127, $Default_if_guard$128, $Default_unless_guard$129, $Default_match_var$130, $Default_match_hash_var$131, $Default_match_hash_var_from_str$132, $Default_match_rest$133, $Default_hash_pattern$134, $Default_array_pattern$135, $Default_find_pattern$137, $Default_match_with_trailing_comma$138, $Default_const_pattern$139, $Default_pin$140, $Default_match_alt$141, $Default_match_as$142, $Default_match_nil_pattern$143, $Default_match_pair$144, $Default_match_label$145, $Default_check_condition$146, $Default_check_duplicate_args$147, $Default_check_duplicate_arg$149, $Default_validate_no_forward_arg_after_restarg$150, $Default_check_assignment_to_numparam$152, $Default_check_reserved_for_numparam$153, $Default_arg_name_collides$ques$154, $Default_check_lvar_name$155, $Default_check_duplicate_pattern_variable$156, $Default_check_duplicate_pattern_key$157, $Default_n$158, $Default_n0$159, $Default_join_exprs$160, $Default_token_map$161, $Default_delimited_string_map$162, $Default_prefix_string_map$163, $Default_unquoted_map$164, $Default_pair_keyword_map$165, $Default_pair_quoted_map$166, $Default_expr_map$167, $Default_collection_map$168, $Default_string_map$169, $Default_regexp_map$170, $Default_constant_map$171, $Default_variable_map$172, $Default_binary_op_map$173, $Default_unary_op_map$174, $Default_range_map$175, $Default_arg_prefix_map$176, $Default_kwarg_map$177, $Default_module_definition_map$178, $Default_definition_map$179, $Default_endless_definition_map$180, $Default_send_map$181, $Default_var_send_map$182, $Default_send_binary_op_map$183, $Default_send_unary_op_map$184, $Default_index_map$185, $Default_send_index_map$186, $Default_block_map$187, $Default_keyword_map$188, $Default_keyword_mod_map$189, $Default_condition_map$190, $Default_ternary_map$191, $Default_for_map$192, $Default_rescue_body_map$193, $Default_eh_keyword_map$194, $Default_guard_map$195, $Default_static_string$196, $Default_static_regexp$198, $Default_static_regexp_node$199, $Default_collapse_string_parts$ques$200, $Default_value$201, $Default_string_value$202, $Default_loc$203, $Default_diagnostic$204, $Default_validate_definee$205, $Default_rewrite_hash_args_to_kwargs$206, $Default_kwargs$ques$207;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.parser = self.$$prototype.emit_file_line_as_literals = nil;
+      $proto.parser = $proto.emit_file_line_as_literals = nil;
       
       (function(self, $parent_nesting) {
-        var $nesting = [self].concat($parent_nesting);
-
+        
         return self.$attr_accessor("emit_lambda")
       })(Opal.get_singleton_class(self), $nesting);
       self.emit_lambda = false;
       (function(self, $parent_nesting) {
-        var $nesting = [self].concat($parent_nesting);
-
+        
         return self.$attr_accessor("emit_procarg0")
       })(Opal.get_singleton_class(self), $nesting);
       self.emit_procarg0 = false;
       (function(self, $parent_nesting) {
-        var $nesting = [self].concat($parent_nesting);
-
+        
         return self.$attr_accessor("emit_encoding")
       })(Opal.get_singleton_class(self), $nesting);
       self.emit_encoding = false;
       (function(self, $parent_nesting) {
-        var $nesting = [self].concat($parent_nesting);
-
+        
         return self.$attr_accessor("emit_index")
       })(Opal.get_singleton_class(self), $nesting);
       self.emit_index = false;
       (function(self, $parent_nesting) {
-        var $nesting = [self].concat($parent_nesting);
-
+        
         return self.$attr_accessor("emit_arg_inside_procarg0")
       })(Opal.get_singleton_class(self), $nesting);
       self.emit_arg_inside_procarg0 = false;
       (function(self, $parent_nesting) {
-        var $nesting = [self].concat($parent_nesting);
-
+        
         return self.$attr_accessor("emit_forward_arg")
       })(Opal.get_singleton_class(self), $nesting);
       self.emit_forward_arg = false;
       (function(self, $parent_nesting) {
-        var $nesting = [self].concat($parent_nesting);
-
+        
         return self.$attr_accessor("emit_kwargs")
       })(Opal.get_singleton_class(self), $nesting);
       self.emit_kwargs = false;
       (function(self, $parent_nesting) {
-        var $nesting = [self].concat($parent_nesting);
-
+        
         return self.$attr_accessor("emit_match_pattern")
       })(Opal.get_singleton_class(self), $nesting);
       self.emit_match_pattern = false;
       (function(self, $parent_nesting) {
-        var $nesting = [self].concat($parent_nesting), $modernize$1;
-
-        return (Opal.def(self, '$modernize', $modernize$1 = function $$modernize() {
+        
+        return $def(self, '$modernize', function $$modernize() {
           var self = this;
 
           
@@ -20750,204 +17789,203 @@ Opal.modules["parser/builders/default"] = function(Opal) {
           self.emit_forward_arg = true;
           self.emit_kwargs = true;
           return (self.emit_match_pattern = true);
-        }, $modernize$1.$$arity = 0), nil) && 'modernize'
+        }, 0)
       })(Opal.get_singleton_class(self), $nesting);
       self.$attr_accessor("parser");
       self.$attr_accessor("emit_file_line_as_literals");
       
-      Opal.def(self, '$initialize', $Default_initialize$2 = function $$initialize() {
+      $def(self, '$initialize', function $$initialize() {
         var self = this;
 
         return (self.emit_file_line_as_literals = true)
-      }, $Default_initialize$2.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$nil', $Default_nil$3 = function $$nil(nil_t) {
+      $def(self, '$nil', function $$nil(nil_t) {
         var self = this;
 
         return self.$n0("nil", self.$token_map(nil_t))
-      }, $Default_nil$3.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$true', $Default_true$4 = function(true_t) {
+      $def(self, '$true', function $Default_true$1(true_t) {
         var self = this;
 
         return self.$n0("true", self.$token_map(true_t))
-      }, $Default_true$4.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$false', $Default_false$5 = function(false_t) {
+      $def(self, '$false', function $Default_false$2(false_t) {
         var self = this;
 
         return self.$n0("false", self.$token_map(false_t))
-      }, $Default_false$5.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$integer', $Default_integer$6 = function $$integer(integer_t) {
+      $def(self, '$integer', function $$integer(integer_t) {
         var self = this;
 
         return self.$numeric("int", integer_t)
-      }, $Default_integer$6.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$float', $Default_float$7 = function(float_t) {
+      $def(self, '$float', function $Default_float$3(float_t) {
         var self = this;
 
         return self.$numeric("float", float_t)
-      }, $Default_float$7.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$rational', $Default_rational$8 = function $$rational(rational_t) {
+      $def(self, '$rational', function $$rational(rational_t) {
         var self = this;
 
         return self.$numeric("rational", rational_t)
-      }, $Default_rational$8.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$complex', $Default_complex$9 = function $$complex(complex_t) {
+      $def(self, '$complex', function $$complex(complex_t) {
         var self = this;
 
         return self.$numeric("complex", complex_t)
-      }, $Default_complex$9.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$numeric', $Default_numeric$10 = function $$numeric(kind, token) {
+      $def(self, '$numeric', function $$numeric(kind, token) {
         var self = this;
 
-        return self.$n(kind, [self.$value(token)], $$$($$$($$($nesting, 'Source'), 'Map'), 'Operator').$new(nil, self.$loc(token)))
-      }, $Default_numeric$10.$$arity = 2);
+        return self.$n(kind, [self.$value(token)], $$$($$$($$('Source'), 'Map'), 'Operator').$new(nil, self.$loc(token)))
+      }, 2);
       self.$private("numeric");
       
-      Opal.def(self, '$unary_num', $Default_unary_num$11 = function $$unary_num(unary_t, numeric) {
-        var $a, self = this, value = nil, operator_loc = nil, $case = nil;
+      $def(self, '$unary_num', function $$unary_num(unary_t, numeric) {
+        var $a, self = this, value = nil, operator_loc = nil, $ret_or_1 = nil;
 
         
-        $a = [].concat(Opal.to_a(numeric)), (value = ($a[0] == null ? nil : $a[0])), $a;
+        $a = [].concat($to_a(numeric)), (value = ($a[0] == null ? nil : $a[0])), $a;
         operator_loc = self.$loc(unary_t);
-        $case = self.$value(unary_t);
-        if ("+"['$===']($case)) {value = value['$+@']()}
-        else if ("-"['$===']($case)) {value = value['$-@']()};
-        return numeric.$updated(nil, [value], $hash2(["location"], {"location": $$$($$$($$($nesting, 'Source'), 'Map'), 'Operator').$new(operator_loc, operator_loc.$join(numeric.$loc().$expression()))}));
-      }, $Default_unary_num$11.$$arity = 2);
+        if ($eqeqeq("+", ($ret_or_1 = self.$value(unary_t)))) {
+          value = value['$+@']()
+        } else if ($eqeqeq("-", $ret_or_1)) {
+          value = value['$-@']()
+        } else {
+          nil
+        };
+        return numeric.$updated(nil, [value], $hash2(["location"], {"location": $$$($$$($$('Source'), 'Map'), 'Operator').$new(operator_loc, operator_loc.$join(numeric.$loc().$expression()))}));
+      }, 2);
       
-      Opal.def(self, '$__LINE__', $Default___LINE__$12 = function $$__LINE__(__LINE__t) {
+      $def(self, '$__LINE__', function $$__LINE__(__LINE__t) {
         var self = this;
 
         return self.$n0("__LINE__", self.$token_map(__LINE__t))
-      }, $Default___LINE__$12.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$string', $Default_string$13 = function $$string(string_t) {
+      $def(self, '$string', function $$string(string_t) {
         var self = this;
 
         return self.$n("str", [self.$string_value(string_t)], self.$delimited_string_map(string_t))
-      }, $Default_string$13.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$string_internal', $Default_string_internal$14 = function $$string_internal(string_t) {
+      $def(self, '$string_internal', function $$string_internal(string_t) {
         var self = this;
 
         return self.$n("str", [self.$string_value(string_t)], self.$unquoted_map(string_t))
-      }, $Default_string_internal$14.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$string_compose', $Default_string_compose$15 = function $$string_compose(begin_t, parts, end_t) {
-        var self = this, $ret_or_1 = nil;
+      $def(self, '$string_compose', function $$string_compose(begin_t, parts, end_t) {
+        var self = this;
 
         if ($truthy(self['$collapse_string_parts?'](parts))) {
-          if ($truthy((function() {if ($truthy(($ret_or_1 = begin_t['$nil?']()))) {
-            return end_t['$nil?']()
-          } else {
-            return $ret_or_1
-          }; return nil; })())) {
+          if (($truthy(begin_t['$nil?']()) && ($truthy(end_t['$nil?']())))) {
             return parts.$first()
           } else {
             return self.$n("str", parts.$first().$children(), self.$string_map(begin_t, parts, end_t))
           }
         } else {
-          return self.$n("dstr", [].concat(Opal.to_a(parts)), self.$string_map(begin_t, parts, end_t))
+          return self.$n("dstr", [].concat($to_a(parts)), self.$string_map(begin_t, parts, end_t))
         }
-      }, $Default_string_compose$15.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$character', $Default_character$16 = function $$character(char_t) {
+      $def(self, '$character', function $$character(char_t) {
         var self = this;
 
         return self.$n("str", [self.$string_value(char_t)], self.$prefix_string_map(char_t))
-      }, $Default_character$16.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$__FILE__', $Default___FILE__$17 = function $$__FILE__(__FILE__t) {
+      $def(self, '$__FILE__', function $$__FILE__(__FILE__t) {
         var self = this;
 
         return self.$n0("__FILE__", self.$token_map(__FILE__t))
-      }, $Default___FILE__$17.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$symbol', $Default_symbol$18 = function $$symbol(symbol_t) {
+      $def(self, '$symbol', function $$symbol(symbol_t) {
         var self = this;
 
         return self.$n("sym", [self.$string_value(symbol_t).$to_sym()], self.$prefix_string_map(symbol_t))
-      }, $Default_symbol$18.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$symbol_internal', $Default_symbol_internal$19 = function $$symbol_internal(symbol_t) {
+      $def(self, '$symbol_internal', function $$symbol_internal(symbol_t) {
         var self = this;
 
         return self.$n("sym", [self.$string_value(symbol_t).$to_sym()], self.$unquoted_map(symbol_t))
-      }, $Default_symbol_internal$19.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$symbol_compose', $Default_symbol_compose$20 = function $$symbol_compose(begin_t, parts, end_t) {
-        var self = this, str = nil, $ret_or_2 = nil;
+      $def(self, '$symbol_compose', function $$symbol_compose(begin_t, parts, end_t) {
+        var self = this, str = nil;
 
         if ($truthy(self['$collapse_string_parts?'](parts))) {
           
           str = parts.$first();
           return self.$n("sym", [str.$children().$first().$to_sym()], self.$collection_map(begin_t, str.$loc().$expression(), end_t));
-        } else if ($truthy((function() {if ($truthy(($ret_or_2 = self.parser.$version()['$=='](18)))) {
-          return parts['$empty?']()
-        } else {
-          return $ret_or_2
-        }; return nil; })())) {
+        } else if (($eqeq(self.parser.$version(), 18) && ($truthy(parts['$empty?']())))) {
           return self.$diagnostic("error", "empty_symbol", nil, self.$loc(begin_t).$join(self.$loc(end_t)))
         } else {
-          return self.$n("dsym", [].concat(Opal.to_a(parts)), self.$collection_map(begin_t, parts, end_t))
+          return self.$n("dsym", [].concat($to_a(parts)), self.$collection_map(begin_t, parts, end_t))
         }
-      }, $Default_symbol_compose$20.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$xstring_compose', $Default_xstring_compose$21 = function $$xstring_compose(begin_t, parts, end_t) {
+      $def(self, '$xstring_compose', function $$xstring_compose(begin_t, parts, end_t) {
         var self = this;
 
-        return self.$n("xstr", [].concat(Opal.to_a(parts)), self.$string_map(begin_t, parts, end_t))
-      }, $Default_xstring_compose$21.$$arity = 3);
+        return self.$n("xstr", [].concat($to_a(parts)), self.$string_map(begin_t, parts, end_t))
+      }, 3);
       
-      Opal.def(self, '$dedent_string', $Default_dedent_string$22 = function $$dedent_string(node, dedent_level) {
-        var $$23, self = this, dedenter = nil, $case = nil, str = nil, children = nil;
+      $def(self, '$dedent_string', function $$dedent_string(node, dedent_level) {
+        var dedenter = nil, $ret_or_1 = nil, str = nil, children = nil;
 
         
-        if ($truthy(dedent_level['$nil?']()['$!']())) {
+        if ($not(dedent_level['$nil?']())) {
           
-          dedenter = $$$($$($nesting, 'Lexer'), 'Dedenter').$new(dedent_level);
-          $case = node.$type();
-          if ("str"['$===']($case)) {
-          str = node.$children().$first();
-          dedenter.$dedent(str);}
-          else if ("dstr"['$===']($case) || "xstr"['$===']($case)) {
-          children = $send(node.$children(), 'map', [], ($$23 = function(str_node){var self = $$23.$$s == null ? this : $$23.$$s;
-
+          dedenter = $$$($$('Lexer'), 'Dedenter').$new(dedent_level);
+          if ($eqeqeq("str", ($ret_or_1 = node.$type()))) {
             
+            str = node.$children().$first();
+            dedenter.$dedent(str);
+          } else if (($eqeqeq("dstr", $ret_or_1) || ($eqeqeq("xstr", $ret_or_1)))) {
             
-            if (str_node == null) {
-              str_node = nil;
-            };
-            if (str_node.$type()['$==']("str")) {
+            children = $send(node.$children(), 'map', [], function $$4(str_node){
               
-              str = str_node.$children().$first();
-              dedenter.$dedent(str);
-              if ($truthy(str['$empty?']())) {
-                return nil;};
-            } else {
-              dedenter.$interrupt()
-            };
-            return str_node;}, $$23.$$s = self, $$23.$$arity = 1, $$23));
-          node = node.$updated(nil, children.$compact());};};
+              
+              if (str_node == null) str_node = nil;;
+              if ($eqeq(str_node.$type(), "str")) {
+                
+                str = str_node.$children().$first();
+                dedenter.$dedent(str);
+                if ($truthy(str['$empty?']())) {
+                  return nil;
+                };
+              } else {
+                dedenter.$interrupt()
+              };
+              return str_node;}, 1);
+            node = node.$updated(nil, children.$compact());
+          } else {
+            nil
+          };
+        };
         return node;
-      }, $Default_dedent_string$22.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$regexp_options', $Default_regexp_options$24 = function $$regexp_options(regopt_t) {
+      $def(self, '$regexp_options', function $$regexp_options(regopt_t) {
         var self = this, options = nil;
 
         
         options = $send(self.$value(regopt_t).$each_char().$sort().$uniq(), 'map', [], "to_sym".$to_proc());
         return self.$n("regopt", options, self.$token_map(regopt_t));
-      }, $Default_regexp_options$24.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$regexp_compose', $Default_regexp_compose$25 = function $$regexp_compose(begin_t, parts, end_t, options) {
+      $def(self, '$regexp_compose', function $$regexp_compose(begin_t, parts, end_t, options) {
         var self = this, e = nil;
 
         
@@ -20955,473 +17993,469 @@ Opal.modules["parser/builders/default"] = function(Opal) {
         try {
           self.$static_regexp(parts, options)
         } catch ($err) {
-          if (Opal.rescue($err, [$$($nesting, 'RegexpError')])) {(e = $err)
+          if (Opal.rescue($err, [$$('RegexpError')])) {(e = $err)
             try {
               self.$diagnostic("error", "invalid_regexp", $hash2(["message"], {"message": e.$message()}), self.$loc(begin_t).$join(self.$loc(end_t)))
             } finally { Opal.pop_exception(); }
           } else { throw $err; }
         };;
         return self.$n("regexp", parts['$<<'](options), self.$regexp_map(begin_t, end_t, options));
-      }, $Default_regexp_compose$25.$$arity = 4);
+      }, 4);
       
-      Opal.def(self, '$array', $Default_array$26 = function $$array(begin_t, elements, end_t) {
+      $def(self, '$array', function $$array(begin_t, elements, end_t) {
         var self = this;
 
         return self.$n("array", elements, self.$collection_map(begin_t, elements, end_t))
-      }, $Default_array$26.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$splat', $Default_splat$27 = function $$splat(star_t, arg) {
+      $def(self, '$splat', function $$splat(star_t, arg) {
         var self = this;
 
         
         
-        if (arg == null) {
-          arg = nil;
-        };
+        if (arg == null) arg = nil;;
         if ($truthy(arg['$nil?']())) {
           return self.$n0("splat", self.$unary_op_map(star_t))
         } else {
           return self.$n("splat", [arg], self.$unary_op_map(star_t, arg))
         };
-      }, $Default_splat$27.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$word', $Default_word$28 = function $$word(parts) {
+      $def(self, '$word', function $$word(parts) {
         var self = this;
 
         if ($truthy(self['$collapse_string_parts?'](parts))) {
           return parts.$first()
         } else {
-          return self.$n("dstr", [].concat(Opal.to_a(parts)), self.$collection_map(nil, parts, nil))
+          return self.$n("dstr", [].concat($to_a(parts)), self.$collection_map(nil, parts, nil))
         }
-      }, $Default_word$28.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$words_compose', $Default_words_compose$29 = function $$words_compose(begin_t, parts, end_t) {
+      $def(self, '$words_compose', function $$words_compose(begin_t, parts, end_t) {
         var self = this;
 
-        return self.$n("array", [].concat(Opal.to_a(parts)), self.$collection_map(begin_t, parts, end_t))
-      }, $Default_words_compose$29.$$arity = 3);
+        return self.$n("array", [].concat($to_a(parts)), self.$collection_map(begin_t, parts, end_t))
+      }, 3);
       
-      Opal.def(self, '$symbols_compose', $Default_symbols_compose$30 = function $$symbols_compose(begin_t, parts, end_t) {
-        var $$31, self = this;
+      $def(self, '$symbols_compose', function $$symbols_compose(begin_t, parts, end_t) {
+        var self = this;
 
         
-        parts = $send(parts, 'map', [], ($$31 = function(part){var self = $$31.$$s == null ? this : $$31.$$s, $a, $case = nil, value = nil;
+        parts = $send(parts, 'map', [], function $$5(part){var $a, $ret_or_1 = nil, value = nil;
 
           
           
-          if (part == null) {
-            part = nil;
-          };
-          return (function() {$case = part.$type();
-          if ("str"['$===']($case)) {
-          $a = [].concat(Opal.to_a(part)), (value = ($a[0] == null ? nil : $a[0])), $a;
-          return part.$updated("sym", [value.$to_sym()]);}
-          else if ("dstr"['$===']($case)) {return part.$updated("dsym")}
-          else {return part}})();}, $$31.$$s = self, $$31.$$arity = 1, $$31));
-        return self.$n("array", [].concat(Opal.to_a(parts)), self.$collection_map(begin_t, parts, end_t));
-      }, $Default_symbols_compose$30.$$arity = 3);
+          if (part == null) part = nil;;
+          if ($eqeqeq("str", ($ret_or_1 = part.$type()))) {
+            
+            $a = [].concat($to_a(part)), (value = ($a[0] == null ? nil : $a[0])), $a;
+            return part.$updated("sym", [value.$to_sym()]);
+          } else if ($eqeqeq("dstr", $ret_or_1)) {
+            return part.$updated("dsym")
+          } else {
+            return part
+          };}, 1);
+        return self.$n("array", [].concat($to_a(parts)), self.$collection_map(begin_t, parts, end_t));
+      }, 3);
       
-      Opal.def(self, '$pair', $Default_pair$32 = function $$pair(key, assoc_t, value) {
+      $def(self, '$pair', function $$pair(key, assoc_t, value) {
         var self = this;
 
         return self.$n("pair", [key, value], self.$binary_op_map(key, assoc_t, value))
-      }, $Default_pair$32.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$pair_list_18', $Default_pair_list_18$33 = function $$pair_list_18(list) {
-        var $$34, self = this;
+      $def(self, '$pair_list_18', function $$pair_list_18(list) {
+        var self = this;
 
-        if ($truthy(list.$size()['$%'](2)['$!='](0))) {
+        if ($neqeq(list.$size()['$%'](2), 0)) {
           return self.$diagnostic("error", "odd_hash", nil, list.$last().$loc().$expression())
         } else {
-          return $send(list.$each_slice(2), 'map', [], ($$34 = function(key, value){var self = $$34.$$s == null ? this : $$34.$$s;
+          return $send(list.$each_slice(2), 'map', [], function $$6(key, value){var self = $$6.$$s == null ? this : $$6.$$s;
 
             
             
-            if (key == null) {
-              key = nil;
-            };
+            if (key == null) key = nil;;
             
-            if (value == null) {
-              value = nil;
-            };
-            return self.$n("pair", [key, value], self.$binary_op_map(key, nil, value));}, $$34.$$s = self, $$34.$$arity = 2, $$34))
+            if (value == null) value = nil;;
+            return self.$n("pair", [key, value], self.$binary_op_map(key, nil, value));}, {$$arity: 2, $$s: self})
         }
-      }, $Default_pair_list_18$33.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$pair_keyword', $Default_pair_keyword$35 = function $$pair_keyword(key_t, value) {
+      $def(self, '$pair_keyword', function $$pair_keyword(key_t, value) {
         var $a, $b, self = this, key_map = nil, pair_map = nil, key = nil;
 
         
-        $b = self.$pair_keyword_map(key_t, value), $a = Opal.to_ary($b), (key_map = ($a[0] == null ? nil : $a[0])), (pair_map = ($a[1] == null ? nil : $a[1])), $b;
+        $b = self.$pair_keyword_map(key_t, value), $a = $to_ary($b), (key_map = ($a[0] == null ? nil : $a[0])), (pair_map = ($a[1] == null ? nil : $a[1])), $b;
         key = self.$n("sym", [self.$value(key_t).$to_sym()], key_map);
         return self.$n("pair", [key, value], pair_map);
-      }, $Default_pair_keyword$35.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$pair_quoted', $Default_pair_quoted$36 = function $$pair_quoted(begin_t, parts, end_t, value) {
+      $def(self, '$pair_quoted', function $$pair_quoted(begin_t, parts, end_t, value) {
         var $a, $b, self = this, pair_map = nil, key = nil;
 
         
-        $b = self.$pair_quoted_map(begin_t, end_t, value), $a = Opal.to_ary($b), (end_t = ($a[0] == null ? nil : $a[0])), (pair_map = ($a[1] == null ? nil : $a[1])), $b;
+        $b = self.$pair_quoted_map(begin_t, end_t, value), $a = $to_ary($b), (end_t = ($a[0] == null ? nil : $a[0])), (pair_map = ($a[1] == null ? nil : $a[1])), $b;
         key = self.$symbol_compose(begin_t, parts, end_t);
         return self.$n("pair", [key, value], pair_map);
-      }, $Default_pair_quoted$36.$$arity = 4);
+      }, 4);
       
-      Opal.def(self, '$pair_label', $Default_pair_label$37 = function $$pair_label(key_t) {
+      $def(self, '$pair_label', function $$pair_label(key_t) {
         var self = this, key_l = nil, value_l = nil, label = nil, value = nil;
 
         
         key_l = self.$loc(key_t);
         value_l = key_l.$adjust($hash2(["end_pos"], {"end_pos": -1}));
         label = self.$value(key_t);
-        value = (function() {if ($truthy(label['$=~'](/^[[:lower:]]/))) {
-          return self.$n("ident", [label.$to_sym()], $$$($$$($$($nesting, 'Source'), 'Map'), 'Variable').$new(value_l))
-        } else {
-          return self.$n("const", [nil, label.$to_sym()], $$$($$$($$($nesting, 'Source'), 'Map'), 'Constant').$new(nil, value_l, value_l))
-        }; return nil; })();
+        value = ($truthy(label['$=~'](/^[[:lower:]]/)) ? (self.$n("ident", [label.$to_sym()], $$$($$$($$('Source'), 'Map'), 'Variable').$new(value_l))) : (self.$n("const", [nil, label.$to_sym()], $$$($$$($$('Source'), 'Map'), 'Constant').$new(nil, value_l, value_l))));
         return self.$pair_keyword(key_t, self.$accessible(value));
-      }, $Default_pair_label$37.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$kwsplat', $Default_kwsplat$38 = function $$kwsplat(dstar_t, arg) {
+      $def(self, '$kwsplat', function $$kwsplat(dstar_t, arg) {
         var self = this;
 
         return self.$n("kwsplat", [arg], self.$unary_op_map(dstar_t, arg))
-      }, $Default_kwsplat$38.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$associate', $Default_associate$39 = function $$associate(begin_t, pairs, end_t) {
-        var $$40, self = this;
+      $def(self, '$associate', function $$associate(begin_t, pairs, end_t) {
+        var self = this;
 
         
-        $send((0), 'upto', [$rb_minus(pairs.$length(), 1)], ($$40 = function(i){var self = $$40.$$s == null ? this : $$40.$$s, $$41;
+        $send((0), 'upto', [$rb_minus(pairs.$length(), 1)], function $$7(i){var self = $$7.$$s == null ? this : $$7.$$s;
 
           
           
-          if (i == null) {
-            i = nil;
-          };
-          return $send($rb_plus(i, 1), 'upto', [$rb_minus(pairs.$length(), 1)], ($$41 = function(j){var self = $$41.$$s == null ? this : $$41.$$s, $a, key1 = nil, key2 = nil, do_warn = nil, $case = nil, $ret_or_3 = nil;
+          if (i == null) i = nil;;
+          return $send($rb_plus(i, 1), 'upto', [$rb_minus(pairs.$length(), 1)], function $$8(j){var $a, self = $$8.$$s == null ? this : $$8.$$s, key1 = nil, key2 = nil, do_warn = nil, $ret_or_1 = nil;
             if (self.parser == null) self.parser = nil;
 
             
             
-            if (j == null) {
-              j = nil;
-            };
-            $a = [].concat(Opal.to_a(pairs['$[]'](i))), (key1 = ($a[0] == null ? nil : $a[0])), $a;
-            $a = [].concat(Opal.to_a(pairs['$[]'](j))), (key2 = ($a[0] == null ? nil : $a[0])), $a;
+            if (j == null) j = nil;;
+            $a = [].concat($to_a(pairs['$[]'](i))), (key1 = ($a[0] == null ? nil : $a[0])), $a;
+            $a = [].concat($to_a(pairs['$[]'](j))), (key2 = ($a[0] == null ? nil : $a[0])), $a;
             do_warn = false;
-            $case = key1.$type();
-            if ("sym"['$===']($case) || "str"['$===']($case) || "int"['$===']($case) || "float"['$===']($case)) {if (key1['$=='](key2)) {
-              do_warn = true}}
-            else if ("rational"['$===']($case) || "complex"['$===']($case) || "regexp"['$===']($case)) {if ($truthy((function() {if ($truthy(($ret_or_3 = $rb_ge(self.parser.$version(), 31)))) {
-              return key1['$=='](key2)
+            if (($eqeqeq("sym", ($ret_or_1 = key1.$type())) || (($eqeqeq("str", $ret_or_1) || (($eqeqeq("int", $ret_or_1) || ($eqeqeq("float", $ret_or_1)))))))) {
+              if ($eqeq(key1, key2)) {
+                do_warn = true
+              }
+            } else if (($eqeqeq("rational", $ret_or_1) || (($eqeqeq("complex", $ret_or_1) || ($eqeqeq("regexp", $ret_or_1)))))) {
+              if (($truthy($rb_ge(self.parser.$version(), 31)) && ($eqeq(key1, key2)))) {
+                do_warn = true
+              }
             } else {
-              return $ret_or_3
-            }; return nil; })())) {
-              do_warn = true}};
+              nil
+            };
             if ($truthy(do_warn)) {
               return self.$diagnostic("warning", "duplicate_hash_key", nil, key2.$loc().$expression())
             } else {
               return nil
-            };}, $$41.$$s = self, $$41.$$arity = 1, $$41));}, $$40.$$s = self, $$40.$$arity = 1, $$40));
-        return self.$n("hash", [].concat(Opal.to_a(pairs)), self.$collection_map(begin_t, pairs, end_t));
-      }, $Default_associate$39.$$arity = 3);
+            };}, {$$arity: 1, $$s: self});}, {$$arity: 1, $$s: self});
+        return self.$n("hash", [].concat($to_a(pairs)), self.$collection_map(begin_t, pairs, end_t));
+      }, 3);
       
-      Opal.def(self, '$range_inclusive', $Default_range_inclusive$42 = function $$range_inclusive(lhs, dot2_t, rhs) {
+      $def(self, '$range_inclusive', function $$range_inclusive(lhs, dot2_t, rhs) {
         var self = this;
 
         return self.$n("irange", [lhs, rhs], self.$range_map(lhs, dot2_t, rhs))
-      }, $Default_range_inclusive$42.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$range_exclusive', $Default_range_exclusive$43 = function $$range_exclusive(lhs, dot3_t, rhs) {
+      $def(self, '$range_exclusive', function $$range_exclusive(lhs, dot3_t, rhs) {
         var self = this;
 
         return self.$n("erange", [lhs, rhs], self.$range_map(lhs, dot3_t, rhs))
-      }, $Default_range_exclusive$43.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$self', $Default_self$44 = function $$self(token) {
+      $def(self, '$self', function $$self(token) {
         var self = this;
 
         return self.$n0("self", self.$token_map(token))
-      }, $Default_self$44.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$ident', $Default_ident$45 = function $$ident(token) {
+      $def(self, '$ident', function $$ident(token) {
         var self = this;
 
         return self.$n("ident", [self.$value(token).$to_sym()], self.$variable_map(token))
-      }, $Default_ident$45.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$ivar', $Default_ivar$46 = function $$ivar(token) {
+      $def(self, '$ivar', function $$ivar(token) {
         var self = this;
 
         return self.$n("ivar", [self.$value(token).$to_sym()], self.$variable_map(token))
-      }, $Default_ivar$46.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$gvar', $Default_gvar$47 = function $$gvar(token) {
+      $def(self, '$gvar', function $$gvar(token) {
         var self = this;
 
         return self.$n("gvar", [self.$value(token).$to_sym()], self.$variable_map(token))
-      }, $Default_gvar$47.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$cvar', $Default_cvar$48 = function $$cvar(token) {
+      $def(self, '$cvar', function $$cvar(token) {
         var self = this;
 
         return self.$n("cvar", [self.$value(token).$to_sym()], self.$variable_map(token))
-      }, $Default_cvar$48.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$back_ref', $Default_back_ref$49 = function $$back_ref(token) {
+      $def(self, '$back_ref', function $$back_ref(token) {
         var self = this;
 
         return self.$n("back_ref", [self.$value(token).$to_sym()], self.$token_map(token))
-      }, $Default_back_ref$49.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$nth_ref', $Default_nth_ref$50 = function $$nth_ref(token) {
+      $def(self, '$nth_ref', function $$nth_ref(token) {
         var self = this;
 
         return self.$n("nth_ref", [self.$value(token)], self.$token_map(token))
-      }, $Default_nth_ref$50.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$accessible', $Default_accessible$51 = function $$accessible(node) {
-        var $a, $$52, self = this, $case = nil, name = nil, $ret_or_4 = nil;
-
-        return (function() {$case = node.$type();
-        if ("__FILE__"['$===']($case)) {if ($truthy(self.emit_file_line_as_literals)) {
-          return self.$n("str", [node.$loc().$expression().$source_buffer().$name()], node.$loc().$dup())
-        } else {
-          return node
-        }}
-        else if ("__LINE__"['$===']($case)) {if ($truthy(self.emit_file_line_as_literals)) {
-          return self.$n("int", [node.$loc().$expression().$line()], node.$loc().$dup())
-        } else {
-          return node
-        }}
-        else if ("__ENCODING__"['$===']($case)) {if ($truthy(self.$class().$emit_encoding()['$!']())) {
-          return self.$n("const", [self.$n("const", [nil, "Encoding"], nil), "UTF_8"], node.$loc().$dup())
-        } else {
-          return node
-        }}
-        else if ("ident"['$===']($case)) {
-        $a = [].concat(Opal.to_a(node)), (name = ($a[0] == null ? nil : $a[0])), $a;
-        if ($truthy($send(["?", "!"], 'any?', [], ($$52 = function(c){var self = $$52.$$s == null ? this : $$52.$$s;
+      $def(self, '$accessible', function $$accessible(node) {
+        var $a, self = this, $ret_or_1 = nil, name = nil;
 
+        if ($eqeqeq("__FILE__", ($ret_or_1 = node.$type()))) {
+          if ($truthy(self.emit_file_line_as_literals)) {
+            return self.$n("str", [node.$loc().$expression().$source_buffer().$name()], node.$loc().$dup())
+          } else {
+            return node
+          }
+        } else if ($eqeqeq("__LINE__", $ret_or_1)) {
+          if ($truthy(self.emit_file_line_as_literals)) {
+            return self.$n("int", [node.$loc().$expression().$line()], node.$loc().$dup())
+          } else {
+            return node
+          }
+        } else if ($eqeqeq("__ENCODING__", $ret_or_1)) {
+          if ($not(self.$class().$emit_encoding())) {
+            return self.$n("const", [self.$n("const", [nil, "Encoding"], nil), "UTF_8"], node.$loc().$dup())
+          } else {
+            return node
+          }
+        } else if ($eqeqeq("ident", $ret_or_1)) {
           
-          
-          if (c == null) {
-            c = nil;
+          $a = [].concat($to_a(node)), (name = ($a[0] == null ? nil : $a[0])), $a;
+          if ($truthy($send(["?", "!"], 'any?', [], function $$9(c){
+            
+            
+            if (c == null) c = nil;;
+            return name.$to_s()['$end_with?'](c);}, 1))) {
+            self.$diagnostic("error", "invalid_id_to_get", $hash2(["identifier"], {"identifier": name.$to_s()}), node.$loc().$expression())
           };
-          return name.$to_s()['$end_with?'](c);}, $$52.$$s = self, $$52.$$arity = 1, $$52)))) {
-          self.$diagnostic("error", "invalid_id_to_get", $hash2(["identifier"], {"identifier": name.$to_s()}), node.$loc().$expression())};
-        if ($truthy((function() {if ($truthy(($ret_or_4 = $rb_ge(self.parser.$version(), 27)))) {
-          return self.parser.$try_declare_numparam(node)
-        } else {
-          return $ret_or_4
-        }; return nil; })())) {
-          return node.$updated("lvar")};
-        if ($truthy(self.parser.$static_env()['$declared?'](name))) {
+          if (($truthy($rb_ge(self.parser.$version(), 27)) && ($truthy(self.parser.$try_declare_numparam(node))))) {
+            return node.$updated("lvar")
+          };
+          if (!$truthy(self.parser.$static_env()['$declared?'](name))) {
+            return self.$n("send", [nil, name], self.$var_send_map(node))
+          };
+          if ($eqeq(name.$to_s(), self.$parser().$current_arg_stack().$top())) {
+            self.$diagnostic("error", "circular_argument_reference", $hash2(["var_name"], {"var_name": name.$to_s()}), node.$loc().$expression())
+          };
+          return node.$updated("lvar");
         } else {
-          return self.$n("send", [nil, name], self.$var_send_map(node))
-        };
-        if (name.$to_s()['$=='](self.$parser().$current_arg_stack().$top())) {
-          self.$diagnostic("error", "circular_argument_reference", $hash2(["var_name"], {"var_name": name.$to_s()}), node.$loc().$expression())};
-        return node.$updated("lvar");}
-        else {return node}})()
-      }, $Default_accessible$51.$$arity = 1);
+          return node
+        }
+      }, 1);
       
-      Opal.def(self, '$const', $Default_const$53 = function(name_t) {
+      $def(self, '$const', function $Default_const$10(name_t) {
         var self = this;
 
         return self.$n("const", [nil, self.$value(name_t).$to_sym()], self.$constant_map(nil, nil, name_t))
-      }, $Default_const$53.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$const_global', $Default_const_global$54 = function $$const_global(t_colon3, name_t) {
+      $def(self, '$const_global', function $$const_global(t_colon3, name_t) {
         var self = this, cbase = nil;
 
         
         cbase = self.$n0("cbase", self.$token_map(t_colon3));
         return self.$n("const", [cbase, self.$value(name_t).$to_sym()], self.$constant_map(cbase, t_colon3, name_t));
-      }, $Default_const_global$54.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$const_fetch', $Default_const_fetch$55 = function $$const_fetch(scope, t_colon2, name_t) {
+      $def(self, '$const_fetch', function $$const_fetch(scope, t_colon2, name_t) {
         var self = this;
 
         return self.$n("const", [scope, self.$value(name_t).$to_sym()], self.$constant_map(scope, t_colon2, name_t))
-      }, $Default_const_fetch$55.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$__ENCODING__', $Default___ENCODING__$56 = function $$__ENCODING__(__ENCODING__t) {
+      $def(self, '$__ENCODING__', function $$__ENCODING__(__ENCODING__t) {
         var self = this;
 
         return self.$n0("__ENCODING__", self.$token_map(__ENCODING__t))
-      }, $Default___ENCODING__$56.$$arity = 1);
-      
-      Opal.def(self, '$assignable', $Default_assignable$57 = function $$assignable(node) {
-        var $a, self = this, $case = nil, name = nil, var_name = nil, name_loc = nil;
-
-        return (function() {$case = node.$type();
-        if ("cvar"['$===']($case)) {return node.$updated("cvasgn")}
-        else if ("ivar"['$===']($case)) {return node.$updated("ivasgn")}
-        else if ("gvar"['$===']($case)) {return node.$updated("gvasgn")}
-        else if ("const"['$===']($case)) {
-        if ($truthy(self.parser.$context().$in_def())) {
-          self.$diagnostic("error", "dynamic_const", nil, node.$loc().$expression())};
-        return node.$updated("casgn");}
-        else if ("ident"['$===']($case)) {
-        $a = [].concat(Opal.to_a(node)), (name = ($a[0] == null ? nil : $a[0])), $a;
-        var_name = node.$children()['$[]'](0).$to_s();
-        name_loc = node.$loc().$expression();
-        self.$check_assignment_to_numparam(var_name, name_loc);
-        self.$check_reserved_for_numparam(var_name, name_loc);
-        self.parser.$static_env().$declare(name);
-        return node.$updated("lvasgn");}
-        else if ("match_var"['$===']($case)) {
-        $a = [].concat(Opal.to_a(node)), (name = ($a[0] == null ? nil : $a[0])), $a;
-        var_name = node.$children()['$[]'](0).$to_s();
-        name_loc = node.$loc().$expression();
-        self.$check_assignment_to_numparam(var_name, name_loc);
-        self.$check_reserved_for_numparam(var_name, name_loc);
-        return node;}
-        else if ("nil"['$===']($case) || "self"['$===']($case) || "true"['$===']($case) || "false"['$===']($case) || "__FILE__"['$===']($case) || "__LINE__"['$===']($case) || "__ENCODING__"['$===']($case)) {return self.$diagnostic("error", "invalid_assignment", nil, node.$loc().$expression())}
-        else if ("back_ref"['$===']($case) || "nth_ref"['$===']($case)) {return self.$diagnostic("error", "backref_assignment", nil, node.$loc().$expression())}
-        else { return nil }})()
-      }, $Default_assignable$57.$$arity = 1);
-      
-      Opal.def(self, '$const_op_assignable', $Default_const_op_assignable$58 = function $$const_op_assignable(node) {
-        var self = this;
+      }, 1);
+      
+      $def(self, '$assignable', function $$assignable(node) {
+        var $a, self = this, $ret_or_1 = nil, name = nil, var_name = nil, name_loc = nil;
 
+        if ($eqeqeq("cvar", ($ret_or_1 = node.$type()))) {
+          return node.$updated("cvasgn")
+        } else if ($eqeqeq("ivar", $ret_or_1)) {
+          return node.$updated("ivasgn")
+        } else if ($eqeqeq("gvar", $ret_or_1)) {
+          return node.$updated("gvasgn")
+        } else if ($eqeqeq("const", $ret_or_1)) {
+          
+          if ($truthy(self.parser.$context().$in_def())) {
+            self.$diagnostic("error", "dynamic_const", nil, node.$loc().$expression())
+          };
+          return node.$updated("casgn");
+        } else if ($eqeqeq("ident", $ret_or_1)) {
+          
+          $a = [].concat($to_a(node)), (name = ($a[0] == null ? nil : $a[0])), $a;
+          var_name = node.$children()['$[]'](0).$to_s();
+          name_loc = node.$loc().$expression();
+          self.$check_assignment_to_numparam(var_name, name_loc);
+          self.$check_reserved_for_numparam(var_name, name_loc);
+          self.parser.$static_env().$declare(name);
+          return node.$updated("lvasgn");
+        } else if ($eqeqeq("match_var", $ret_or_1)) {
+          
+          $a = [].concat($to_a(node)), (name = ($a[0] == null ? nil : $a[0])), $a;
+          var_name = node.$children()['$[]'](0).$to_s();
+          name_loc = node.$loc().$expression();
+          self.$check_assignment_to_numparam(var_name, name_loc);
+          self.$check_reserved_for_numparam(var_name, name_loc);
+          return node;
+        } else if (($eqeqeq("nil", $ret_or_1) || (($eqeqeq("self", $ret_or_1) || (($eqeqeq("true", $ret_or_1) || (($eqeqeq("false", $ret_or_1) || (($eqeqeq("__FILE__", $ret_or_1) || (($eqeqeq("__LINE__", $ret_or_1) || ($eqeqeq("__ENCODING__", $ret_or_1)))))))))))))) {
+          return self.$diagnostic("error", "invalid_assignment", nil, node.$loc().$expression())
+        } else if (($eqeqeq("back_ref", $ret_or_1) || ($eqeqeq("nth_ref", $ret_or_1)))) {
+          return self.$diagnostic("error", "backref_assignment", nil, node.$loc().$expression())
+        } else {
+          return nil
+        }
+      }, 1);
+      
+      $def(self, '$const_op_assignable', function $$const_op_assignable(node) {
+        
         return node.$updated("casgn")
-      }, $Default_const_op_assignable$58.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$assign', $Default_assign$59 = function $$assign(lhs, eql_t, rhs) {
+      $def(self, '$assign', function $$assign(lhs, eql_t, rhs) {
         var self = this;
 
         return lhs['$<<'](rhs).$updated(nil, nil, $hash2(["location"], {"location": lhs.$loc().$with_operator(self.$loc(eql_t)).$with_expression(self.$join_exprs(lhs, rhs))}))
-      }, $Default_assign$59.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$op_assign', $Default_op_assign$60 = function $$op_assign(lhs, op_t, rhs) {
-        var self = this, $case = nil, operator = nil, source_map = nil;
+      $def(self, '$op_assign', function $$op_assign(lhs, op_t, rhs) {
+        var self = this, $ret_or_1 = nil, operator = nil, source_map = nil, $ret_or_2 = nil;
 
-        return (function() {$case = lhs.$type();
-        if ("gvasgn"['$===']($case) || "ivasgn"['$===']($case) || "lvasgn"['$===']($case) || "cvasgn"['$===']($case) || "casgn"['$===']($case) || "send"['$===']($case) || "csend"['$===']($case) || "index"['$===']($case)) {
-        operator = self.$value(op_t)['$[]']($range(0, -1, false)).$to_sym();
-        source_map = lhs.$loc().$with_operator(self.$loc(op_t)).$with_expression(self.$join_exprs(lhs, rhs));
-        if (lhs.$type()['$==']("index")) {
-          lhs = lhs.$updated("indexasgn")};
-        return (function() {$case = operator;
-        if ("&&"['$===']($case)) {return self.$n("and_asgn", [lhs, rhs], source_map)}
-        else if ("||"['$===']($case)) {return self.$n("or_asgn", [lhs, rhs], source_map)}
-        else {return self.$n("op_asgn", [lhs, operator, rhs], source_map)}})();}
-        else if ("back_ref"['$===']($case) || "nth_ref"['$===']($case)) {return self.$diagnostic("error", "backref_assignment", nil, lhs.$loc().$expression())}
-        else { return nil }})()
-      }, $Default_op_assign$60.$$arity = 3);
+        if (($eqeqeq("gvasgn", ($ret_or_1 = lhs.$type())) || (($eqeqeq("ivasgn", $ret_or_1) || (($eqeqeq("lvasgn", $ret_or_1) || (($eqeqeq("cvasgn", $ret_or_1) || (($eqeqeq("casgn", $ret_or_1) || (($eqeqeq("send", $ret_or_1) || (($eqeqeq("csend", $ret_or_1) || ($eqeqeq("index", $ret_or_1)))))))))))))))) {
+          
+          operator = self.$value(op_t)['$[]']($range(0, -1, false)).$to_sym();
+          source_map = lhs.$loc().$with_operator(self.$loc(op_t)).$with_expression(self.$join_exprs(lhs, rhs));
+          if ($eqeq(lhs.$type(), "index")) {
+            lhs = lhs.$updated("indexasgn")
+          };
+          if ($eqeqeq("&&", ($ret_or_2 = operator))) {
+            return self.$n("and_asgn", [lhs, rhs], source_map)
+          } else if ($eqeqeq("||", $ret_or_2)) {
+            return self.$n("or_asgn", [lhs, rhs], source_map)
+          } else {
+            return self.$n("op_asgn", [lhs, operator, rhs], source_map)
+          };
+        } else if (($eqeqeq("back_ref", $ret_or_1) || ($eqeqeq("nth_ref", $ret_or_1)))) {
+          return self.$diagnostic("error", "backref_assignment", nil, lhs.$loc().$expression())
+        } else {
+          return nil
+        }
+      }, 3);
       
-      Opal.def(self, '$multi_lhs', $Default_multi_lhs$61 = function $$multi_lhs(begin_t, items, end_t) {
+      $def(self, '$multi_lhs', function $$multi_lhs(begin_t, items, end_t) {
         var self = this;
 
-        return self.$n("mlhs", [].concat(Opal.to_a(items)), self.$collection_map(begin_t, items, end_t))
-      }, $Default_multi_lhs$61.$$arity = 3);
+        return self.$n("mlhs", [].concat($to_a(items)), self.$collection_map(begin_t, items, end_t))
+      }, 3);
       
-      Opal.def(self, '$multi_assign', $Default_multi_assign$62 = function $$multi_assign(lhs, eql_t, rhs) {
+      $def(self, '$multi_assign', function $$multi_assign(lhs, eql_t, rhs) {
         var self = this;
 
         return self.$n("masgn", [lhs, rhs], self.$binary_op_map(lhs, eql_t, rhs))
-      }, $Default_multi_assign$62.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$def_class', $Default_def_class$63 = function $$def_class(class_t, name, lt_t, superclass, body, end_t) {
+      $def(self, '$def_class', function $$def_class(class_t, name, lt_t, superclass, body, end_t) {
         var self = this;
 
         return self.$n("class", [name, superclass, body], self.$module_definition_map(class_t, name, lt_t, end_t))
-      }, $Default_def_class$63.$$arity = 6);
+      }, 6);
       
-      Opal.def(self, '$def_sclass', $Default_def_sclass$64 = function $$def_sclass(class_t, lshft_t, expr, body, end_t) {
+      $def(self, '$def_sclass', function $$def_sclass(class_t, lshft_t, expr, body, end_t) {
         var self = this;
 
         return self.$n("sclass", [expr, body], self.$module_definition_map(class_t, nil, lshft_t, end_t))
-      }, $Default_def_sclass$64.$$arity = 5);
+      }, 5);
       
-      Opal.def(self, '$def_module', $Default_def_module$65 = function $$def_module(module_t, name, body, end_t) {
+      $def(self, '$def_module', function $$def_module(module_t, name, body, end_t) {
         var self = this;
 
         return self.$n("module", [name, body], self.$module_definition_map(module_t, name, nil, end_t))
-      }, $Default_def_module$65.$$arity = 4);
+      }, 4);
       
-      Opal.def(self, '$def_method', $Default_def_method$66 = function $$def_method(def_t, name_t, args, body, end_t) {
+      $def(self, '$def_method', function $$def_method(def_t, name_t, args, body, end_t) {
         var self = this;
 
         
         self.$check_reserved_for_numparam(self.$value(name_t), self.$loc(name_t));
         return self.$n("def", [self.$value(name_t).$to_sym(), args, body], self.$definition_map(def_t, nil, name_t, end_t));
-      }, $Default_def_method$66.$$arity = 5);
+      }, 5);
       
-      Opal.def(self, '$def_endless_method', $Default_def_endless_method$67 = function $$def_endless_method(def_t, name_t, args, assignment_t, body) {
+      $def(self, '$def_endless_method', function $$def_endless_method(def_t, name_t, args, assignment_t, body) {
         var self = this;
 
         
         self.$check_reserved_for_numparam(self.$value(name_t), self.$loc(name_t));
         return self.$n("def", [self.$value(name_t).$to_sym(), args, body], self.$endless_definition_map(def_t, nil, name_t, assignment_t, body));
-      }, $Default_def_endless_method$67.$$arity = 5);
+      }, 5);
       
-      Opal.def(self, '$def_singleton', $Default_def_singleton$68 = function $$def_singleton(def_t, definee, dot_t, name_t, args, body, end_t) {
+      $def(self, '$def_singleton', function $$def_singleton(def_t, definee, dot_t, name_t, args, body, end_t) {
         var self = this;
 
         
         self.$validate_definee(definee);
         self.$check_reserved_for_numparam(self.$value(name_t), self.$loc(name_t));
         return self.$n("defs", [definee, self.$value(name_t).$to_sym(), args, body], self.$definition_map(def_t, dot_t, name_t, end_t));
-      }, $Default_def_singleton$68.$$arity = 7);
+      }, 7);
       
-      Opal.def(self, '$def_endless_singleton', $Default_def_endless_singleton$69 = function $$def_endless_singleton(def_t, definee, dot_t, name_t, args, assignment_t, body) {
+      $def(self, '$def_endless_singleton', function $$def_endless_singleton(def_t, definee, dot_t, name_t, args, assignment_t, body) {
         var self = this;
 
         
         self.$validate_definee(definee);
         self.$check_reserved_for_numparam(self.$value(name_t), self.$loc(name_t));
         return self.$n("defs", [definee, self.$value(name_t).$to_sym(), args, body], self.$endless_definition_map(def_t, dot_t, name_t, assignment_t, body));
-      }, $Default_def_endless_singleton$69.$$arity = 7);
+      }, 7);
       
-      Opal.def(self, '$undef_method', $Default_undef_method$70 = function $$undef_method(undef_t, names) {
+      $def(self, '$undef_method', function $$undef_method(undef_t, names) {
         var self = this;
 
-        return self.$n("undef", [].concat(Opal.to_a(names)), self.$keyword_map(undef_t, nil, names, nil))
-      }, $Default_undef_method$70.$$arity = 2);
+        return self.$n("undef", [].concat($to_a(names)), self.$keyword_map(undef_t, nil, names, nil))
+      }, 2);
       
-      Opal.def(self, '$alias', $Default_alias$71 = function $$alias(alias_t, to, from) {
+      $def(self, '$alias', function $$alias(alias_t, to, from) {
         var self = this;
 
         return self.$n("alias", [to, from], self.$keyword_map(alias_t, nil, [to, from], nil))
-      }, $Default_alias$71.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$args', $Default_args$72 = function $$args(begin_t, args, end_t, check_args) {
-        var self = this, map = nil, $ret_or_5 = nil, $ret_or_6 = nil;
+      $def(self, '$args', function $$args(begin_t, args, end_t, check_args) {
+        var self = this, map = nil;
 
         
         
-        if (check_args == null) {
-          check_args = true;
-        };
+        if (check_args == null) check_args = true;;
         if ($truthy(check_args)) {
-          args = self.$check_duplicate_args(args)};
+          args = self.$check_duplicate_args(args)
+        };
         self.$validate_no_forward_arg_after_restarg(args);
         map = self.$collection_map(begin_t, args, end_t);
-        if ($truthy((function() {if ($truthy(($ret_or_5 = (function() {if ($truthy(($ret_or_6 = self.$class().$emit_forward_arg()['$!']()))) {
-          return args.$length()['$=='](1)
-        } else {
-          return $ret_or_6
-        }; return nil; })()))) {
-          return args['$[]'](0).$type()['$==']("forward_arg")
-        } else {
-          return $ret_or_5
-        }; return nil; })())) {
+        if ((($not(self.$class().$emit_forward_arg()) && ($eqeq(args.$length(), 1))) && ($eqeq(args['$[]'](0).$type(), "forward_arg")))) {
           return self.$n("forward_args", [], map)
         } else {
           return self.$n("args", args, map)
         };
-      }, $Default_args$72.$$arity = -4);
+      }, -4);
       
-      Opal.def(self, '$numargs', $Default_numargs$73 = function $$numargs(max_numparam) {
+      $def(self, '$numargs', function $$numargs(max_numparam) {
         var self = this;
 
         return self.$n("numargs", [max_numparam], nil)
-      }, $Default_numargs$73.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$forward_only_args', $Default_forward_only_args$74 = function $$forward_only_args(begin_t, dots_t, end_t) {
+      $def(self, '$forward_only_args', function $$forward_only_args(begin_t, dots_t, end_t) {
         var self = this, arg = nil;
 
         if ($truthy(self.$class().$emit_forward_arg())) {
@@ -21431,38 +18465,36 @@ Opal.modules["parser/builders/default"] = function(Opal) {
         } else {
           return self.$n("forward_args", [], self.$collection_map(begin_t, self.$token_map(dots_t), end_t))
         }
-      }, $Default_forward_only_args$74.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$forward_arg', $Default_forward_arg$75 = function $$forward_arg(dots_t) {
+      $def(self, '$forward_arg', function $$forward_arg(dots_t) {
         var self = this;
 
         return self.$n("forward_arg", [], self.$token_map(dots_t))
-      }, $Default_forward_arg$75.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$arg', $Default_arg$76 = function $$arg(name_t) {
+      $def(self, '$arg', function $$arg(name_t) {
         var self = this;
 
         
         self.$check_reserved_for_numparam(self.$value(name_t), self.$loc(name_t));
         return self.$n("arg", [self.$value(name_t).$to_sym()], self.$variable_map(name_t));
-      }, $Default_arg$76.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$optarg', $Default_optarg$77 = function $$optarg(name_t, eql_t, value) {
+      $def(self, '$optarg', function $$optarg(name_t, eql_t, value) {
         var self = this;
 
         
         self.$check_reserved_for_numparam(self.$value(name_t), self.$loc(name_t));
         return self.$n("optarg", [self.$value(name_t).$to_sym(), value], self.$variable_map(name_t).$with_operator(self.$loc(eql_t)).$with_expression(self.$loc(name_t).$join(value.$loc().$expression())));
-      }, $Default_optarg$77.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$restarg', $Default_restarg$78 = function $$restarg(star_t, name_t) {
+      $def(self, '$restarg', function $$restarg(star_t, name_t) {
         var self = this;
 
         
         
-        if (name_t == null) {
-          name_t = nil;
-        };
+        if (name_t == null) name_t = nil;;
         if ($truthy(name_t)) {
           
           self.$check_reserved_for_numparam(self.$value(name_t), self.$loc(name_t));
@@ -21470,32 +18502,30 @@ Opal.modules["parser/builders/default"] = function(Opal) {
         } else {
           return self.$n0("restarg", self.$arg_prefix_map(star_t))
         };
-      }, $Default_restarg$78.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$kwarg', $Default_kwarg$79 = function $$kwarg(name_t) {
+      $def(self, '$kwarg', function $$kwarg(name_t) {
         var self = this;
 
         
         self.$check_reserved_for_numparam(self.$value(name_t), self.$loc(name_t));
         return self.$n("kwarg", [self.$value(name_t).$to_sym()], self.$kwarg_map(name_t));
-      }, $Default_kwarg$79.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$kwoptarg', $Default_kwoptarg$80 = function $$kwoptarg(name_t, value) {
+      $def(self, '$kwoptarg', function $$kwoptarg(name_t, value) {
         var self = this;
 
         
         self.$check_reserved_for_numparam(self.$value(name_t), self.$loc(name_t));
         return self.$n("kwoptarg", [self.$value(name_t).$to_sym(), value], self.$kwarg_map(name_t, value));
-      }, $Default_kwoptarg$80.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$kwrestarg', $Default_kwrestarg$81 = function $$kwrestarg(dstar_t, name_t) {
+      $def(self, '$kwrestarg', function $$kwrestarg(dstar_t, name_t) {
         var self = this;
 
         
         
-        if (name_t == null) {
-          name_t = nil;
-        };
+        if (name_t == null) name_t = nil;;
         if ($truthy(name_t)) {
           
           self.$check_reserved_for_numparam(self.$value(name_t), self.$loc(name_t));
@@ -21503,92 +18533,83 @@ Opal.modules["parser/builders/default"] = function(Opal) {
         } else {
           return self.$n0("kwrestarg", self.$arg_prefix_map(dstar_t))
         };
-      }, $Default_kwrestarg$81.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$kwnilarg', $Default_kwnilarg$82 = function $$kwnilarg(dstar_t, nil_t) {
+      $def(self, '$kwnilarg', function $$kwnilarg(dstar_t, nil_t) {
         var self = this;
 
         return self.$n0("kwnilarg", self.$arg_prefix_map(dstar_t, nil_t))
-      }, $Default_kwnilarg$82.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$shadowarg', $Default_shadowarg$83 = function $$shadowarg(name_t) {
+      $def(self, '$shadowarg', function $$shadowarg(name_t) {
         var self = this;
 
         
         self.$check_reserved_for_numparam(self.$value(name_t), self.$loc(name_t));
         return self.$n("shadowarg", [self.$value(name_t).$to_sym()], self.$variable_map(name_t));
-      }, $Default_shadowarg$83.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$blockarg', $Default_blockarg$84 = function $$blockarg(amper_t, name_t) {
+      $def(self, '$blockarg', function $$blockarg(amper_t, name_t) {
         var self = this, arg_name = nil;
 
         
-        if ($truthy(name_t['$nil?']()['$!']())) {
-          self.$check_reserved_for_numparam(self.$value(name_t), self.$loc(name_t))};
-        arg_name = (function() {if ($truthy(name_t)) {
-          return self.$value(name_t).$to_sym()
-        } else {
-          return nil
-        }; return nil; })();
+        if ($not(name_t['$nil?']())) {
+          self.$check_reserved_for_numparam(self.$value(name_t), self.$loc(name_t))
+        };
+        arg_name = ($truthy(name_t) ? (self.$value(name_t).$to_sym()) : (nil));
         return self.$n("blockarg", [arg_name], self.$arg_prefix_map(amper_t, name_t));
-      }, $Default_blockarg$84.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$procarg0', $Default_procarg0$85 = function $$procarg0(arg) {
-        var self = this, $ret_or_7 = nil;
+      $def(self, '$procarg0', function $$procarg0(arg) {
+        var self = this;
 
         if ($truthy(self.$class().$emit_procarg0())) {
-          if ($truthy((function() {if ($truthy(($ret_or_7 = arg.$type()['$==']("arg")))) {
-            return self.$class().$emit_arg_inside_procarg0()
-          } else {
-            return $ret_or_7
-          }; return nil; })())) {
-            return self.$n("procarg0", [arg], $$$($$$($$($nesting, 'Source'), 'Map'), 'Collection').$new(nil, nil, arg.$location().$expression()))
+          if (($eqeq(arg.$type(), "arg") && ($truthy(self.$class().$emit_arg_inside_procarg0())))) {
+            return self.$n("procarg0", [arg], $$$($$$($$('Source'), 'Map'), 'Collection').$new(nil, nil, arg.$location().$expression()))
           } else {
             return arg.$updated("procarg0")
           }
         } else {
           return arg
         }
-      }, $Default_procarg0$85.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$arg_expr', $Default_arg_expr$86 = function $$arg_expr(expr) {
+      $def(self, '$arg_expr', function $$arg_expr(expr) {
         var self = this;
 
-        if (expr.$type()['$==']("lvasgn")) {
+        if ($eqeq(expr.$type(), "lvasgn")) {
           return expr.$updated("arg")
         } else {
           return self.$n("arg_expr", [expr], expr.$loc().$dup())
         }
-      }, $Default_arg_expr$86.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$restarg_expr', $Default_restarg_expr$87 = function $$restarg_expr(star_t, expr) {
+      $def(self, '$restarg_expr', function $$restarg_expr(star_t, expr) {
         var self = this;
 
         
         
-        if (expr == null) {
-          expr = nil;
-        };
+        if (expr == null) expr = nil;;
         if ($truthy(expr['$nil?']())) {
           return self.$n0("restarg", self.$token_map(star_t))
-        } else if (expr.$type()['$==']("lvasgn")) {
+        } else if ($eqeq(expr.$type(), "lvasgn")) {
           return expr.$updated("restarg")
         } else {
           return self.$n("restarg_expr", [expr], expr.$loc().$dup())
         };
-      }, $Default_restarg_expr$87.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$blockarg_expr', $Default_blockarg_expr$88 = function $$blockarg_expr(amper_t, expr) {
+      $def(self, '$blockarg_expr', function $$blockarg_expr(amper_t, expr) {
         var self = this;
 
-        if (expr.$type()['$==']("lvasgn")) {
+        if ($eqeq(expr.$type(), "lvasgn")) {
           return expr.$updated("blockarg")
         } else {
           return self.$n("blockarg_expr", [expr], expr.$loc().$dup())
         }
-      }, $Default_blockarg_expr$88.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$objc_kwarg', $Default_objc_kwarg$89 = function $$objc_kwarg(kwname_t, assoc_t, name_t) {
+      $def(self, '$objc_kwarg', function $$objc_kwarg(kwname_t, assoc_t, name_t) {
         var self = this, kwname_l = nil, operator_l = nil;
 
         
@@ -21600,73 +18621,62 @@ Opal.modules["parser/builders/default"] = function(Opal) {
         } else {
           operator_l = self.$loc(assoc_t)
         };
-        return self.$n("objc_kwarg", [self.$value(kwname_t).$to_sym(), self.$value(name_t).$to_sym()], $$$($$$($$($nesting, 'Source'), 'Map'), 'ObjcKwarg').$new(kwname_l, operator_l, self.$loc(name_t), kwname_l.$join(self.$loc(name_t))));
-      }, $Default_objc_kwarg$89.$$arity = 3);
+        return self.$n("objc_kwarg", [self.$value(kwname_t).$to_sym(), self.$value(name_t).$to_sym()], $$$($$$($$('Source'), 'Map'), 'ObjcKwarg').$new(kwname_l, operator_l, self.$loc(name_t), kwname_l.$join(self.$loc(name_t))));
+      }, 3);
       
-      Opal.def(self, '$objc_restarg', $Default_objc_restarg$90 = function $$objc_restarg(star_t, name) {
+      $def(self, '$objc_restarg', function $$objc_restarg(star_t, name) {
         var self = this;
 
         
         
-        if (name == null) {
-          name = nil;
-        };
+        if (name == null) name = nil;;
         if ($truthy(name['$nil?']())) {
           return self.$n0("restarg", self.$arg_prefix_map(star_t))
-        } else if (name.$type()['$==']("arg")) {
+        } else if ($eqeq(name.$type(), "arg")) {
           return name.$updated("restarg", nil, $hash2(["location"], {"location": name.$loc().$with_operator(self.$loc(star_t))}))
         } else {
           return self.$n("objc_restarg", [name], self.$unary_op_map(star_t, name))
         };
-      }, $Default_objc_restarg$90.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$call_type_for_dot', $Default_call_type_for_dot$91 = function $$call_type_for_dot(dot_t) {
-        var self = this, $ret_or_8 = nil;
+      $def(self, '$call_type_for_dot', function $$call_type_for_dot(dot_t) {
+        var self = this;
 
-        if ($truthy((function() {if ($truthy(($ret_or_8 = dot_t['$nil?']()['$!']()))) {
-          return self.$value(dot_t)['$==']("anddot")
-        } else {
-          return $ret_or_8
-        }; return nil; })())) {
+        if (($not(dot_t['$nil?']()) && ($eqeq(self.$value(dot_t), "anddot")))) {
           return "csend"
         } else {
           return "send"
         }
-      }, $Default_call_type_for_dot$91.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$forwarded_args', $Default_forwarded_args$92 = function $$forwarded_args(dots_t) {
+      $def(self, '$forwarded_args', function $$forwarded_args(dots_t) {
         var self = this;
 
         return self.$n("forwarded_args", [], self.$token_map(dots_t))
-      }, $Default_forwarded_args$92.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$call_method', $Default_call_method$93 = function $$call_method(receiver, dot_t, selector_t, lparen_t, args, rparen_t) {
+      $def(self, '$call_method', function $$call_method(receiver, dot_t, selector_t, lparen_t, args, rparen_t) {
         var self = this, type = nil;
 
         
         
-        if (lparen_t == null) {
-          lparen_t = nil;
-        };
+        if (lparen_t == null) lparen_t = nil;;
         
-        if (args == null) {
-          args = [];
-        };
+        if (args == null) args = [];;
         
-        if (rparen_t == null) {
-          rparen_t = nil;
-        };
+        if (rparen_t == null) rparen_t = nil;;
         type = self.$call_type_for_dot(dot_t);
         if ($truthy(self.$class().$emit_kwargs())) {
-          self.$rewrite_hash_args_to_kwargs(args)};
+          self.$rewrite_hash_args_to_kwargs(args)
+        };
         if ($truthy(selector_t['$nil?']())) {
-          return self.$n(type, [receiver, "call"].concat(Opal.to_a(args)), self.$send_map(receiver, dot_t, nil, lparen_t, args, rparen_t))
+          return self.$n(type, [receiver, "call"].concat($to_a(args)), self.$send_map(receiver, dot_t, nil, lparen_t, args, rparen_t))
         } else {
-          return self.$n(type, [receiver, self.$value(selector_t).$to_sym()].concat(Opal.to_a(args)), self.$send_map(receiver, dot_t, selector_t, lparen_t, args, rparen_t))
+          return self.$n(type, [receiver, self.$value(selector_t).$to_sym()].concat($to_a(args)), self.$send_map(receiver, dot_t, selector_t, lparen_t, args, rparen_t))
         };
-      }, $Default_call_method$93.$$arity = -4);
+      }, -4);
       
-      Opal.def(self, '$call_lambda', $Default_call_lambda$94 = function $$call_lambda(lambda_t) {
+      $def(self, '$call_lambda', function $$call_lambda(lambda_t) {
         var self = this;
 
         if ($truthy(self.$class().$emit_lambda())) {
@@ -21674,28 +18684,21 @@ Opal.modules["parser/builders/default"] = function(Opal) {
         } else {
           return self.$n("send", [nil, "lambda"], self.$send_map(nil, nil, lambda_t))
         }
-      }, $Default_call_lambda$94.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$block', $Default_block$95 = function $$block(method_call, begin_t, args, body, end_t) {
-        var $a, self = this, _receiver = nil, _selector = nil, call_args = nil, last_arg = nil, $ret_or_9 = nil, $ret_or_10 = nil, block_type = nil, actual_send = nil, block = nil;
+      $def(self, '$block', function $$block(method_call, begin_t, args, body, end_t) {
+        var $a, self = this, _receiver = nil, _selector = nil, call_args = nil, last_arg = nil, block_type = nil, actual_send = nil, block = nil;
 
         
-        $a = [].concat(Opal.to_a(method_call)), (_receiver = ($a[0] == null ? nil : $a[0])), (_selector = ($a[1] == null ? nil : $a[1])), (call_args = $slice.call($a, 2)), $a;
-        if (method_call.$type()['$==']("yield")) {
-          self.$diagnostic("error", "block_given_to_yield", nil, method_call.$loc().$keyword(), [self.$loc(begin_t)])};
+        $a = [].concat($to_a(method_call)), (_receiver = ($a[0] == null ? nil : $a[0])), (_selector = ($a[1] == null ? nil : $a[1])), (call_args = $slice.call($a, 2)), $a;
+        if ($eqeq(method_call.$type(), "yield")) {
+          self.$diagnostic("error", "block_given_to_yield", nil, method_call.$loc().$keyword(), [self.$loc(begin_t)])
+        };
         last_arg = call_args.$last();
-        if ($truthy((function() {if ($truthy(($ret_or_9 = last_arg))) {
-          
-          if ($truthy(($ret_or_10 = last_arg.$type()['$==']("block_pass")))) {
-            return $ret_or_10
-          } else {
-            return last_arg.$type()['$==']("forwarded_args")
-          };
-        } else {
-          return $ret_or_9
-        }; return nil; })())) {
-          self.$diagnostic("error", "block_and_blockarg", nil, last_arg.$loc().$expression(), [self.$loc(begin_t)])};
-        if (args.$type()['$==']("numargs")) {
+        if (($truthy(last_arg) && (($eqeq(last_arg.$type(), "block_pass") || ($eqeq(last_arg.$type(), "forwarded_args")))))) {
+          self.$diagnostic("error", "block_and_blockarg", nil, last_arg.$loc().$expression(), [self.$loc(begin_t)])
+        };
+        if ($eqeq(args.$type(), "numargs")) {
           
           block_type = "numblock";
           args = args.$children()['$[]'](0);
@@ -21706,125 +18709,123 @@ Opal.modules["parser/builders/default"] = function(Opal) {
           return self.$n(block_type, [method_call, args, body], self.$block_map(method_call.$loc().$expression(), begin_t, end_t))
         } else {
           
-          $a = [].concat(Opal.to_a(method_call)), (actual_send = ($a[0] == null ? nil : $a[0])), $a;
+          $a = [].concat($to_a(method_call)), (actual_send = ($a[0] == null ? nil : $a[0])), $a;
           block = self.$n(block_type, [actual_send, args, body], self.$block_map(actual_send.$loc().$expression(), begin_t, end_t));
           return self.$n(method_call.$type(), [block], method_call.$loc().$with_expression(self.$join_exprs(method_call, block)));
         };
-      }, $Default_block$95.$$arity = 5);
+      }, 5);
       
-      Opal.def(self, '$block_pass', $Default_block_pass$96 = function $$block_pass(amper_t, arg) {
+      $def(self, '$block_pass', function $$block_pass(amper_t, arg) {
         var self = this;
 
         return self.$n("block_pass", [arg], self.$unary_op_map(amper_t, arg))
-      }, $Default_block_pass$96.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$objc_varargs', $Default_objc_varargs$97 = function $$objc_varargs(pair, rest_of_varargs) {
+      $def(self, '$objc_varargs', function $$objc_varargs(pair, rest_of_varargs) {
         var $a, self = this, value = nil, first_vararg = nil, vararg_array = nil;
 
         
-        $a = [].concat(Opal.to_a(pair)), (value = ($a[0] == null ? nil : $a[0])), (first_vararg = ($a[1] == null ? nil : $a[1])), $a;
-        vararg_array = self.$array(nil, [first_vararg].concat(Opal.to_a(rest_of_varargs)), nil).$updated("objc_varargs");
+        $a = [].concat($to_a(pair)), (value = ($a[0] == null ? nil : $a[0])), (first_vararg = ($a[1] == null ? nil : $a[1])), $a;
+        vararg_array = self.$array(nil, [first_vararg].concat($to_a(rest_of_varargs)), nil).$updated("objc_varargs");
         return pair.$updated(nil, [value, vararg_array], $hash2(["location"], {"location": pair.$loc().$with_expression(pair.$loc().$expression().$join(vararg_array.$loc().$expression()))}));
-      }, $Default_objc_varargs$97.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$attr_asgn', $Default_attr_asgn$98 = function $$attr_asgn(receiver, dot_t, selector_t) {
+      $def(self, '$attr_asgn', function $$attr_asgn(receiver, dot_t, selector_t) {
         var self = this, method_name = nil, type = nil;
 
         
         method_name = $rb_plus(self.$value(selector_t), "=").$to_sym();
         type = self.$call_type_for_dot(dot_t);
         return self.$n(type, [receiver, method_name], self.$send_map(receiver, dot_t, selector_t));
-      }, $Default_attr_asgn$98.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$index', $Default_index$99 = function $$index(receiver, lbrack_t, indexes, rbrack_t) {
+      $def(self, '$index', function $$index(receiver, lbrack_t, indexes, rbrack_t) {
         var self = this;
 
         
         if ($truthy(self.$class().$emit_kwargs())) {
-          self.$rewrite_hash_args_to_kwargs(indexes)};
+          self.$rewrite_hash_args_to_kwargs(indexes)
+        };
         if ($truthy(self.$class().$emit_index())) {
-          return self.$n("index", [receiver].concat(Opal.to_a(indexes)), self.$index_map(receiver, lbrack_t, rbrack_t))
+          return self.$n("index", [receiver].concat($to_a(indexes)), self.$index_map(receiver, lbrack_t, rbrack_t))
         } else {
-          return self.$n("send", [receiver, "[]"].concat(Opal.to_a(indexes)), self.$send_index_map(receiver, lbrack_t, rbrack_t))
+          return self.$n("send", [receiver, "[]"].concat($to_a(indexes)), self.$send_index_map(receiver, lbrack_t, rbrack_t))
         };
-      }, $Default_index$99.$$arity = 4);
+      }, 4);
       
-      Opal.def(self, '$index_asgn', $Default_index_asgn$100 = function $$index_asgn(receiver, lbrack_t, indexes, rbrack_t) {
+      $def(self, '$index_asgn', function $$index_asgn(receiver, lbrack_t, indexes, rbrack_t) {
         var self = this;
 
         if ($truthy(self.$class().$emit_index())) {
-          return self.$n("indexasgn", [receiver].concat(Opal.to_a(indexes)), self.$index_map(receiver, lbrack_t, rbrack_t))
+          return self.$n("indexasgn", [receiver].concat($to_a(indexes)), self.$index_map(receiver, lbrack_t, rbrack_t))
         } else {
-          return self.$n("send", [receiver, "[]="].concat(Opal.to_a(indexes)), self.$send_index_map(receiver, lbrack_t, rbrack_t))
+          return self.$n("send", [receiver, "[]="].concat($to_a(indexes)), self.$send_index_map(receiver, lbrack_t, rbrack_t))
         }
-      }, $Default_index_asgn$100.$$arity = 4);
+      }, 4);
       
-      Opal.def(self, '$binary_op', $Default_binary_op$101 = function $$binary_op(receiver, operator_t, arg) {
+      $def(self, '$binary_op', function $$binary_op(receiver, operator_t, arg) {
         var self = this, source_map = nil, operator = nil, method_call = nil;
 
         
         source_map = self.$send_binary_op_map(receiver, operator_t, arg);
-        if (self.parser.$version()['$=='](18)) {
+        if ($eqeq(self.parser.$version(), 18)) {
           
           operator = self.$value(operator_t);
-          if (operator['$==']("!=")) {
+          if ($eqeq(operator, "!=")) {
             method_call = self.$n("send", [receiver, "==", arg], source_map)
-          } else if (operator['$==']("!~")) {
-            method_call = self.$n("send", [receiver, "=~", arg], source_map)};
+          } else if ($eqeq(operator, "!~")) {
+            method_call = self.$n("send", [receiver, "=~", arg], source_map)
+          };
           if ($truthy(["!=", "!~"]['$include?'](operator))) {
-            return self.$n("not", [method_call], self.$expr_map(source_map.$expression()))};};
+            return self.$n("not", [method_call], self.$expr_map(source_map.$expression()))
+          };
+        };
         return self.$n("send", [receiver, self.$value(operator_t).$to_sym(), arg], source_map);
-      }, $Default_binary_op$101.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$match_op', $Default_match_op$102 = function $$match_op(receiver, match_t, arg) {
-        var $$103, self = this, source_map = nil, regexp = nil;
+      $def(self, '$match_op', function $$match_op(receiver, match_t, arg) {
+        var self = this, source_map = nil, regexp = nil;
 
         
         source_map = self.$send_binary_op_map(receiver, match_t, arg);
         if ($truthy((regexp = self.$static_regexp_node(receiver)))) {
           
-          $send(regexp.$names(), 'each', [], ($$103 = function(name){var self = $$103.$$s == null ? this : $$103.$$s;
+          $send(regexp.$names(), 'each', [], function $$11(name){var self = $$11.$$s == null ? this : $$11.$$s;
             if (self.parser == null) self.parser = nil;
 
             
             
-            if (name == null) {
-              name = nil;
-            };
-            return self.parser.$static_env().$declare(name);}, $$103.$$s = self, $$103.$$arity = 1, $$103));
+            if (name == null) name = nil;;
+            return self.parser.$static_env().$declare(name);}, {$$arity: 1, $$s: self});
           return self.$n("match_with_lvasgn", [receiver, arg], source_map);
         } else {
           return self.$n("send", [receiver, "=~", arg], source_map)
         };
-      }, $Default_match_op$102.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$unary_op', $Default_unary_op$104 = function $$unary_op(op_t, receiver) {
-        var self = this, $case = nil, method = nil;
+      $def(self, '$unary_op', function $$unary_op(op_t, receiver) {
+        var self = this, $ret_or_1 = nil, method = nil;
 
         
-        $case = self.$value(op_t);
-        if ("+"['$===']($case) || "-"['$===']($case)) {method = $rb_plus(self.$value(op_t), "@")}
-        else {method = self.$value(op_t)};
+        if (($eqeqeq("+", ($ret_or_1 = self.$value(op_t))) || ($eqeqeq("-", $ret_or_1)))) {
+          method = $rb_plus(self.$value(op_t), "@")
+        } else {
+          method = self.$value(op_t)
+        };
         return self.$n("send", [receiver, method.$to_sym()], self.$send_unary_op_map(op_t, receiver));
-      }, $Default_unary_op$104.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$not_op', $Default_not_op$105 = function $$not_op(not_t, begin_t, receiver, end_t) {
+      $def(self, '$not_op', function $$not_op(not_t, begin_t, receiver, end_t) {
         var self = this, nil_node = nil;
 
         
         
-        if (begin_t == null) {
-          begin_t = nil;
-        };
+        if (begin_t == null) begin_t = nil;;
         
-        if (receiver == null) {
-          receiver = nil;
-        };
+        if (receiver == null) receiver = nil;;
         
-        if (end_t == null) {
-          end_t = nil;
-        };
-        if (self.parser.$version()['$=='](18)) {
+        if (end_t == null) end_t = nil;;
+        if ($eqeq(self.parser.$version(), 18)) {
           return self.$n("not", [self.$check_condition(receiver)], self.$unary_op_map(not_t, receiver))
         } else if ($truthy(receiver['$nil?']())) {
           
@@ -21833,275 +18834,233 @@ Opal.modules["parser/builders/default"] = function(Opal) {
         } else {
           return self.$n("send", [self.$check_condition(receiver), "!"], self.$send_map(nil, nil, not_t, begin_t, [receiver], end_t))
         };
-      }, $Default_not_op$105.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$logical_op', $Default_logical_op$106 = function $$logical_op(type, lhs, op_t, rhs) {
+      $def(self, '$logical_op', function $$logical_op(type, lhs, op_t, rhs) {
         var self = this;
 
         return self.$n(type, [lhs, rhs], self.$binary_op_map(lhs, op_t, rhs))
-      }, $Default_logical_op$106.$$arity = 4);
+      }, 4);
       
-      Opal.def(self, '$condition', $Default_condition$107 = function $$condition(cond_t, cond, then_t, if_true, else_t, if_false, end_t) {
+      $def(self, '$condition', function $$condition(cond_t, cond, then_t, if_true, else_t, if_false, end_t) {
         var self = this;
 
         return self.$n("if", [self.$check_condition(cond), if_true, if_false], self.$condition_map(cond_t, cond, then_t, if_true, else_t, if_false, end_t))
-      }, $Default_condition$107.$$arity = 7);
+      }, 7);
       
-      Opal.def(self, '$condition_mod', $Default_condition_mod$108 = function $$condition_mod(if_true, if_false, cond_t, cond) {
-        var self = this, $ret_or_11 = nil;
+      $def(self, '$condition_mod', function $$condition_mod(if_true, if_false, cond_t, cond) {
+        var self = this, $ret_or_1 = nil;
 
-        return self.$n("if", [self.$check_condition(cond), if_true, if_false], self.$keyword_mod_map((function() {if ($truthy(($ret_or_11 = if_true))) {
-          return $ret_or_11
-        } else {
-          return if_false
-        }; return nil; })(), cond_t, cond))
-      }, $Default_condition_mod$108.$$arity = 4);
+        return self.$n("if", [self.$check_condition(cond), if_true, if_false], self.$keyword_mod_map(($truthy(($ret_or_1 = if_true)) ? ($ret_or_1) : (if_false)), cond_t, cond))
+      }, 4);
       
-      Opal.def(self, '$ternary', $Default_ternary$109 = function $$ternary(cond, question_t, if_true, colon_t, if_false) {
+      $def(self, '$ternary', function $$ternary(cond, question_t, if_true, colon_t, if_false) {
         var self = this;
 
         return self.$n("if", [self.$check_condition(cond), if_true, if_false], self.$ternary_map(cond, question_t, if_true, colon_t, if_false))
-      }, $Default_ternary$109.$$arity = 5);
+      }, 5);
       
-      Opal.def(self, '$when', $Default_when$110 = function $$when(when_t, patterns, then_t, body) {
+      $def(self, '$when', function $$when(when_t, patterns, then_t, body) {
         var self = this, children = nil;
 
         
         children = patterns['$<<'](body);
         return self.$n("when", children, self.$keyword_map(when_t, then_t, children, nil));
-      }, $Default_when$110.$$arity = 4);
+      }, 4);
       
-      Opal.def(self, '$case', $Default_case$111 = function(case_t, expr, when_bodies, else_t, else_body, end_t) {
+      $def(self, '$case', function $Default_case$12(case_t, expr, when_bodies, else_t, else_body, end_t) {
         var self = this;
 
-        return self.$n("case", [expr].concat(Opal.to_a(when_bodies['$<<'](else_body))), self.$condition_map(case_t, expr, nil, nil, else_t, else_body, end_t))
-      }, $Default_case$111.$$arity = 6);
+        return self.$n("case", [expr].concat($to_a(when_bodies['$<<'](else_body))), self.$condition_map(case_t, expr, nil, nil, else_t, else_body, end_t))
+      }, 6);
       
-      Opal.def(self, '$loop', $Default_loop$112 = function $$loop(type, keyword_t, cond, do_t, body, end_t) {
+      $def(self, '$loop', function $$loop(type, keyword_t, cond, do_t, body, end_t) {
         var self = this;
 
         return self.$n(type, [self.$check_condition(cond), body], self.$keyword_map(keyword_t, do_t, nil, end_t))
-      }, $Default_loop$112.$$arity = 6);
+      }, 6);
       
-      Opal.def(self, '$loop_mod', $Default_loop_mod$113 = function $$loop_mod(type, body, keyword_t, cond) {
+      $def(self, '$loop_mod', function $$loop_mod(type, body, keyword_t, cond) {
         var self = this;
 
         
-        if (body.$type()['$==']("kwbegin")) {
-          type = "" + (type) + "_post"};
+        if ($eqeq(body.$type(), "kwbegin")) {
+          type = "" + (type) + "_post"
+        };
         return self.$n(type, [self.$check_condition(cond), body], self.$keyword_mod_map(body, keyword_t, cond));
-      }, $Default_loop_mod$113.$$arity = 4);
+      }, 4);
       
-      Opal.def(self, '$for', $Default_for$114 = function(for_t, iterator, in_t, iteratee, do_t, body, end_t) {
+      $def(self, '$for', function $Default_for$13(for_t, iterator, in_t, iteratee, do_t, body, end_t) {
         var self = this;
 
         return self.$n("for", [iterator, iteratee, body], self.$for_map(for_t, in_t, do_t, end_t))
-      }, $Default_for$114.$$arity = 7);
+      }, 7);
       
-      Opal.def(self, '$keyword_cmd', $Default_keyword_cmd$115 = function $$keyword_cmd(type, keyword_t, lparen_t, args, rparen_t) {
-        var self = this, $ret_or_12 = nil, last_arg = nil, $ret_or_13 = nil;
+      $def(self, '$keyword_cmd', function $$keyword_cmd(type, keyword_t, lparen_t, args, rparen_t) {
+        var self = this, last_arg = nil;
 
         
         
-        if (lparen_t == null) {
-          lparen_t = nil;
-        };
+        if (lparen_t == null) lparen_t = nil;;
         
-        if (args == null) {
-          args = [];
-        };
+        if (args == null) args = [];;
         
-        if (rparen_t == null) {
-          rparen_t = nil;
-        };
-        if ($truthy((function() {if ($truthy(($ret_or_12 = type['$==']("yield")))) {
-          return $rb_gt(args.$count(), 0)
-        } else {
-          return $ret_or_12
-        }; return nil; })())) {
+        if (rparen_t == null) rparen_t = nil;;
+        if (($eqeq(type, "yield") && ($truthy($rb_gt(args.$count(), 0))))) {
           
           last_arg = args.$last();
-          if (last_arg.$type()['$==']("block_pass")) {
-            self.$diagnostic("error", "block_given_to_yield", nil, self.$loc(keyword_t), [last_arg.$loc().$expression()])};};
-        if ($truthy((function() {if ($truthy(($ret_or_13 = ["yield", "super"]['$include?'](type)))) {
-          return self.$class().$emit_kwargs()
-        } else {
-          return $ret_or_13
-        }; return nil; })())) {
-          self.$rewrite_hash_args_to_kwargs(args)};
+          if ($eqeq(last_arg.$type(), "block_pass")) {
+            self.$diagnostic("error", "block_given_to_yield", nil, self.$loc(keyword_t), [last_arg.$loc().$expression()])
+          };
+        };
+        if (($truthy(["yield", "super"]['$include?'](type)) && ($truthy(self.$class().$emit_kwargs())))) {
+          self.$rewrite_hash_args_to_kwargs(args)
+        };
         return self.$n(type, args, self.$keyword_map(keyword_t, lparen_t, args, rparen_t));
-      }, $Default_keyword_cmd$115.$$arity = -3);
+      }, -3);
       
-      Opal.def(self, '$preexe', $Default_preexe$116 = function $$preexe(preexe_t, lbrace_t, compstmt, rbrace_t) {
+      $def(self, '$preexe', function $$preexe(preexe_t, lbrace_t, compstmt, rbrace_t) {
         var self = this;
 
         return self.$n("preexe", [compstmt], self.$keyword_map(preexe_t, lbrace_t, [], rbrace_t))
-      }, $Default_preexe$116.$$arity = 4);
+      }, 4);
       
-      Opal.def(self, '$postexe', $Default_postexe$117 = function $$postexe(postexe_t, lbrace_t, compstmt, rbrace_t) {
+      $def(self, '$postexe', function $$postexe(postexe_t, lbrace_t, compstmt, rbrace_t) {
         var self = this;
 
         return self.$n("postexe", [compstmt], self.$keyword_map(postexe_t, lbrace_t, [], rbrace_t))
-      }, $Default_postexe$117.$$arity = 4);
+      }, 4);
       
-      Opal.def(self, '$rescue_body', $Default_rescue_body$118 = function $$rescue_body(rescue_t, exc_list, assoc_t, exc_var, then_t, compound_stmt) {
+      $def(self, '$rescue_body', function $$rescue_body(rescue_t, exc_list, assoc_t, exc_var, then_t, compound_stmt) {
         var self = this;
 
         return self.$n("resbody", [exc_list, exc_var, compound_stmt], self.$rescue_body_map(rescue_t, exc_list, assoc_t, exc_var, then_t, compound_stmt))
-      }, $Default_rescue_body$118.$$arity = 6);
+      }, 6);
       
-      Opal.def(self, '$begin_body', $Default_begin_body$119 = function $$begin_body(compound_stmt, rescue_bodies, else_t, else_, ensure_t, ensure_) {
+      $def(self, '$begin_body', function $$begin_body(compound_stmt, rescue_bodies, else_t, else_, ensure_t, ensure_) {
         var self = this, statements = nil;
 
         
         
-        if (rescue_bodies == null) {
-          rescue_bodies = [];
-        };
+        if (rescue_bodies == null) rescue_bodies = [];;
         
-        if (else_t == null) {
-          else_t = nil;
-        };
+        if (else_t == null) else_t = nil;;
         
-        if (else_ == null) {
-          else_ = nil;
-        };
+        if (else_ == null) else_ = nil;;
         
-        if (ensure_t == null) {
-          ensure_t = nil;
-        };
+        if (ensure_t == null) ensure_t = nil;;
         
-        if (ensure_ == null) {
-          ensure_ = nil;
-        };
+        if (ensure_ == null) ensure_ = nil;;
         if ($truthy(rescue_bodies['$any?']())) {
           if ($truthy(else_t)) {
-            compound_stmt = self.$n("rescue", [compound_stmt].concat(Opal.to_a($rb_plus(rescue_bodies, [else_]))), self.$eh_keyword_map(compound_stmt, nil, rescue_bodies, else_t, else_))
+            compound_stmt = self.$n("rescue", [compound_stmt].concat($to_a($rb_plus(rescue_bodies, [else_]))), self.$eh_keyword_map(compound_stmt, nil, rescue_bodies, else_t, else_))
           } else {
-            compound_stmt = self.$n("rescue", [compound_stmt].concat(Opal.to_a($rb_plus(rescue_bodies, [nil]))), self.$eh_keyword_map(compound_stmt, nil, rescue_bodies, nil, nil))
+            compound_stmt = self.$n("rescue", [compound_stmt].concat($to_a($rb_plus(rescue_bodies, [nil]))), self.$eh_keyword_map(compound_stmt, nil, rescue_bodies, nil, nil))
           }
         } else if ($truthy(else_t)) {
           
           statements = [];
-          if ($truthy(compound_stmt['$nil?']()['$!']())) {
-            if (compound_stmt.$type()['$==']("begin")) {
+          if ($not(compound_stmt['$nil?']())) {
+            if ($eqeq(compound_stmt.$type(), "begin")) {
               statements = $rb_plus(statements, compound_stmt.$children())
             } else {
               statements.$push(compound_stmt)
-            }};
+            }
+          };
           statements.$push(self.$n("begin", [else_], self.$collection_map(else_t, [else_], nil)));
-          compound_stmt = self.$n("begin", statements, self.$collection_map(nil, statements, nil));};
+          compound_stmt = self.$n("begin", statements, self.$collection_map(nil, statements, nil));
+        };
         if ($truthy(ensure_t)) {
-          compound_stmt = self.$n("ensure", [compound_stmt, ensure_], self.$eh_keyword_map(compound_stmt, ensure_t, [ensure_], nil, nil))};
+          compound_stmt = self.$n("ensure", [compound_stmt, ensure_], self.$eh_keyword_map(compound_stmt, ensure_t, [ensure_], nil, nil))
+        };
         return compound_stmt;
-      }, $Default_begin_body$119.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$compstmt', $Default_compstmt$120 = function $$compstmt(statements) {
+      $def(self, '$compstmt', function $$compstmt(statements) {
         var self = this;
 
-        return (function() {
-        if ($truthy(statements['$none?']())) {return nil}
-        else if ($truthy(statements['$one?']())) {return statements.$first()}
-        else {return self.$n("begin", statements, self.$collection_map(nil, statements, nil))}})()
-      }, $Default_compstmt$120.$$arity = 1);
+        if ($truthy(statements['$none?']())) {
+          return nil
+        } else if ($truthy(statements['$one?']())) {
+          return statements.$first()
+        } else {
+          return self.$n("begin", statements, self.$collection_map(nil, statements, nil))
+        }
+      }, 1);
       
-      Opal.def(self, '$begin', $Default_begin$121 = function $$begin(begin_t, body, end_t) {
-        var self = this, $ret_or_14 = nil, $ret_or_15 = nil, $ret_or_16 = nil;
+      $def(self, '$begin', function $$begin(begin_t, body, end_t) {
+        var self = this;
 
         if ($truthy(body['$nil?']())) {
           return self.$n0("begin", self.$collection_map(begin_t, nil, end_t))
-        } else if ($truthy((function() {if ($truthy(($ret_or_14 = body.$type()['$==']("mlhs")))) {
-          return $ret_or_14
-        } else {
-          
-          if ($truthy(($ret_or_15 = (function() {if ($truthy(($ret_or_16 = body.$type()['$==']("begin")))) {
-            return body.$loc().$begin()['$nil?']()
-          } else {
-            return $ret_or_16
-          }; return nil; })()))) {
-            return body.$loc().$end()['$nil?']()
-          } else {
-            return $ret_or_15
-          };
-        }; return nil; })())) {
+        } else if (($eqeq(body.$type(), "mlhs") || ((($eqeq(body.$type(), "begin") && ($truthy(body.$loc().$begin()['$nil?']()))) && ($truthy(body.$loc().$end()['$nil?']())))))) {
           return self.$n(body.$type(), body.$children(), self.$collection_map(begin_t, body.$children(), end_t))
         } else {
           return self.$n("begin", [body], self.$collection_map(begin_t, [body], end_t))
         }
-      }, $Default_begin$121.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$begin_keyword', $Default_begin_keyword$122 = function $$begin_keyword(begin_t, body, end_t) {
-        var self = this, $ret_or_17 = nil, $ret_or_18 = nil;
+      $def(self, '$begin_keyword', function $$begin_keyword(begin_t, body, end_t) {
+        var self = this;
 
         if ($truthy(body['$nil?']())) {
           return self.$n0("kwbegin", self.$collection_map(begin_t, nil, end_t))
-        } else if ($truthy((function() {if ($truthy(($ret_or_17 = (function() {if ($truthy(($ret_or_18 = body.$type()['$==']("begin")))) {
-          return body.$loc().$begin()['$nil?']()
-        } else {
-          return $ret_or_18
-        }; return nil; })()))) {
-          return body.$loc().$end()['$nil?']()
-        } else {
-          return $ret_or_17
-        }; return nil; })())) {
+        } else if ((($eqeq(body.$type(), "begin") && ($truthy(body.$loc().$begin()['$nil?']()))) && ($truthy(body.$loc().$end()['$nil?']())))) {
           return self.$n("kwbegin", body.$children(), self.$collection_map(begin_t, body.$children(), end_t))
         } else {
           return self.$n("kwbegin", [body], self.$collection_map(begin_t, [body], end_t))
         }
-      }, $Default_begin_keyword$122.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$case_match', $Default_case_match$123 = function $$case_match(case_t, expr, in_bodies, else_t, else_body, end_t) {
-        var self = this, $ret_or_19 = nil;
+      $def(self, '$case_match', function $$case_match(case_t, expr, in_bodies, else_t, else_body, end_t) {
+        var self = this;
 
         
-        if ($truthy((function() {if ($truthy(($ret_or_19 = else_t))) {
-          return else_body['$!']()
-        } else {
-          return $ret_or_19
-        }; return nil; })())) {
-          else_body = self.$n("empty_else", nil, self.$token_map(else_t))};
-        return self.$n("case_match", [expr].concat(Opal.to_a(in_bodies['$<<'](else_body))), self.$condition_map(case_t, expr, nil, nil, else_t, else_body, end_t));
-      }, $Default_case_match$123.$$arity = 6);
+        if (($truthy(else_t) && ($not(else_body)))) {
+          else_body = self.$n("empty_else", nil, self.$token_map(else_t))
+        };
+        return self.$n("case_match", [expr].concat($to_a(in_bodies['$<<'](else_body))), self.$condition_map(case_t, expr, nil, nil, else_t, else_body, end_t));
+      }, 6);
       
-      Opal.def(self, '$in_match', $Default_in_match$124 = function $$in_match(lhs, in_t, rhs) {
+      $def(self, '$in_match', function $$in_match(lhs, in_t, rhs) {
         var self = this;
 
         return self.$n("in_match", [lhs, rhs], self.$binary_op_map(lhs, in_t, rhs))
-      }, $Default_in_match$124.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$match_pattern', $Default_match_pattern$125 = function $$match_pattern(lhs, match_t, rhs) {
+      $def(self, '$match_pattern', function $$match_pattern(lhs, match_t, rhs) {
         var self = this;
 
         return self.$n("match_pattern", [lhs, rhs], self.$binary_op_map(lhs, match_t, rhs))
-      }, $Default_match_pattern$125.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$match_pattern_p', $Default_match_pattern_p$126 = function $$match_pattern_p(lhs, match_t, rhs) {
+      $def(self, '$match_pattern_p', function $$match_pattern_p(lhs, match_t, rhs) {
         var self = this;
 
         return self.$n("match_pattern_p", [lhs, rhs], self.$binary_op_map(lhs, match_t, rhs))
-      }, $Default_match_pattern_p$126.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$in_pattern', $Default_in_pattern$127 = function $$in_pattern(in_t, pattern, guard, then_t, body) {
+      $def(self, '$in_pattern', function $$in_pattern(in_t, pattern, guard, then_t, body) {
         var self = this, children = nil;
 
         
         children = [pattern, guard, body];
         return self.$n("in_pattern", children, self.$keyword_map(in_t, then_t, children.$compact(), nil));
-      }, $Default_in_pattern$127.$$arity = 5);
+      }, 5);
       
-      Opal.def(self, '$if_guard', $Default_if_guard$128 = function $$if_guard(if_t, if_body) {
+      $def(self, '$if_guard', function $$if_guard(if_t, if_body) {
         var self = this;
 
         return self.$n("if_guard", [if_body], self.$guard_map(if_t, if_body))
-      }, $Default_if_guard$128.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$unless_guard', $Default_unless_guard$129 = function $$unless_guard(unless_t, unless_body) {
+      $def(self, '$unless_guard', function $$unless_guard(unless_t, unless_body) {
         var self = this;
 
         return self.$n("unless_guard", [unless_body], self.$guard_map(unless_t, unless_body))
-      }, $Default_unless_guard$129.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$match_var', $Default_match_var$130 = function $$match_var(name_t) {
+      $def(self, '$match_var', function $$match_var(name_t) {
         var self = this, name = nil, name_l = nil;
 
         
@@ -22111,9 +19070,9 @@ Opal.modules["parser/builders/default"] = function(Opal) {
         self.$check_duplicate_pattern_variable(name, name_l);
         self.parser.$static_env().$declare(name);
         return self.$n("match_var", [name], self.$variable_map(name_t));
-      }, $Default_match_var$130.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$match_hash_var', $Default_match_hash_var$131 = function $$match_hash_var(name_t) {
+      $def(self, '$match_hash_var', function $$match_hash_var(name_t) {
         var self = this, name = nil, expr_l = nil, name_l = nil;
 
         
@@ -22123,41 +19082,45 @@ Opal.modules["parser/builders/default"] = function(Opal) {
         self.$check_lvar_name(name, name_l);
         self.$check_duplicate_pattern_variable(name, name_l);
         self.parser.$static_env().$declare(name);
-        return self.$n("match_var", [name], $$$($$$($$($nesting, 'Source'), 'Map'), 'Variable').$new(name_l, expr_l));
-      }, $Default_match_hash_var$131.$$arity = 1);
+        return self.$n("match_var", [name], $$$($$$($$('Source'), 'Map'), 'Variable').$new(name_l, expr_l));
+      }, 1);
       
-      Opal.def(self, '$match_hash_var_from_str', $Default_match_hash_var_from_str$132 = function $$match_hash_var_from_str(begin_t, strings, end_t) {
-        var $a, self = this, string = nil, $case = nil, name = nil, name_l = nil, begin_l = nil, end_l = nil, expr_l = nil;
+      $def(self, '$match_hash_var_from_str', function $$match_hash_var_from_str(begin_t, strings, end_t) {
+        var $a, self = this, string = nil, $ret_or_1 = nil, name = nil, name_l = nil, begin_l = nil, end_l = nil, expr_l = nil;
 
         
         if ($truthy($rb_gt(strings.$length(), 1))) {
-          self.$diagnostic("error", "pm_interp_in_var_name", nil, self.$loc(begin_t).$join(self.$loc(end_t)))};
+          self.$diagnostic("error", "pm_interp_in_var_name", nil, self.$loc(begin_t).$join(self.$loc(end_t)))
+        };
         string = strings['$[]'](0);
-        return (function() {$case = string.$type();
-        if ("str"['$===']($case)) {
-        $a = [].concat(Opal.to_a(string)), (name = ($a[0] == null ? nil : $a[0])), $a;
-        name_l = string.$loc().$expression();
-        self.$check_lvar_name(name, name_l);
-        self.$check_duplicate_pattern_variable(name, name_l);
-        self.parser.$static_env().$declare(name);
-        if ($truthy((begin_l = string.$loc().$begin()))) {
-          name_l = name_l.$adjust($hash2(["begin_pos"], {"begin_pos": begin_l.$length()}))};
-        if ($truthy((end_l = string.$loc().$end()))) {
-          name_l = name_l.$adjust($hash2(["end_pos"], {"end_pos": end_l.$length()['$-@']()}))};
-        expr_l = self.$loc(begin_t).$join(string.$loc().$expression()).$join(self.$loc(end_t));
-        return self.$n("match_var", [name.$to_sym()], $$$($$$($$($nesting, 'Source'), 'Map'), 'Variable').$new(name_l, expr_l));}
-        else if ("begin"['$===']($case)) {return self.$match_hash_var_from_str(begin_t, string.$children(), end_t)}
-        else {return self.$diagnostic("error", "pm_interp_in_var_name", nil, self.$loc(begin_t).$join(self.$loc(end_t)))}})();
-      }, $Default_match_hash_var_from_str$132.$$arity = 3);
-      
-      Opal.def(self, '$match_rest', $Default_match_rest$133 = function $$match_rest(star_t, name_t) {
+        if ($eqeqeq("str", ($ret_or_1 = string.$type()))) {
+          
+          $a = [].concat($to_a(string)), (name = ($a[0] == null ? nil : $a[0])), $a;
+          name_l = string.$loc().$expression();
+          self.$check_lvar_name(name, name_l);
+          self.$check_duplicate_pattern_variable(name, name_l);
+          self.parser.$static_env().$declare(name);
+          if ($truthy((begin_l = string.$loc().$begin()))) {
+            name_l = name_l.$adjust($hash2(["begin_pos"], {"begin_pos": begin_l.$length()}))
+          };
+          if ($truthy((end_l = string.$loc().$end()))) {
+            name_l = name_l.$adjust($hash2(["end_pos"], {"end_pos": end_l.$length()['$-@']()}))
+          };
+          expr_l = self.$loc(begin_t).$join(string.$loc().$expression()).$join(self.$loc(end_t));
+          return self.$n("match_var", [name.$to_sym()], $$$($$$($$('Source'), 'Map'), 'Variable').$new(name_l, expr_l));
+        } else if ($eqeqeq("begin", $ret_or_1)) {
+          return self.$match_hash_var_from_str(begin_t, string.$children(), end_t)
+        } else {
+          return self.$diagnostic("error", "pm_interp_in_var_name", nil, self.$loc(begin_t).$join(self.$loc(end_t)))
+        };
+      }, 3);
+      
+      $def(self, '$match_rest', function $$match_rest(star_t, name_t) {
         var self = this, name = nil;
 
         
         
-        if (name_t == null) {
-          name_t = nil;
-        };
+        if (name_t == null) name_t = nil;;
         if ($truthy(name_t['$nil?']())) {
           return self.$n0("match_rest", self.$unary_op_map(star_t))
         } else {
@@ -22165,31 +19128,29 @@ Opal.modules["parser/builders/default"] = function(Opal) {
           name = self.$match_var(name_t);
           return self.$n("match_rest", [name], self.$unary_op_map(star_t, name));
         };
-      }, $Default_match_rest$133.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$hash_pattern', $Default_hash_pattern$134 = function $$hash_pattern(lbrace_t, kwargs, rbrace_t) {
+      $def(self, '$hash_pattern', function $$hash_pattern(lbrace_t, kwargs, rbrace_t) {
         var self = this, args = nil;
 
         
         args = self.$check_duplicate_args(kwargs);
         return self.$n("hash_pattern", args, self.$collection_map(lbrace_t, args, rbrace_t));
-      }, $Default_hash_pattern$134.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$array_pattern', $Default_array_pattern$135 = function $$array_pattern(lbrack_t, elements, rbrack_t) {
-        var $$136, self = this, trailing_comma = nil, node_elements = nil, node_type = nil;
+      $def(self, '$array_pattern', function $$array_pattern(lbrack_t, elements, rbrack_t) {
+        var self = this, trailing_comma = nil, node_elements = nil, node_type = nil;
 
         
         if ($truthy(elements['$nil?']())) {
-          return self.$n("array_pattern", nil, self.$collection_map(lbrack_t, [], rbrack_t))};
+          return self.$n("array_pattern", nil, self.$collection_map(lbrack_t, [], rbrack_t))
+        };
         trailing_comma = false;
-        node_elements = $send(elements, 'map', [], ($$136 = function(element){var self = $$136.$$s == null ? this : $$136.$$s;
-
+        node_elements = $send(elements, 'map', [], function $$14(element){
           
           
-          if (element == null) {
-            element = nil;
-          };
-          if (element.$type()['$==']("match_with_trailing_comma")) {
+          if (element == null) element = nil;;
+          if ($eqeq(element.$type(), "match_with_trailing_comma")) {
             
             trailing_comma = true;
             return element.$children().$first();
@@ -22197,71 +19158,67 @@ Opal.modules["parser/builders/default"] = function(Opal) {
             
             trailing_comma = false;
             return element;
-          };}, $$136.$$s = self, $$136.$$arity = 1, $$136));
-        node_type = (function() {if ($truthy(trailing_comma)) {
-          return "array_pattern_with_tail"
-        } else {
-          return "array_pattern"
-        }; return nil; })();
+          };}, 1);
+        node_type = ($truthy(trailing_comma) ? ("array_pattern_with_tail") : ("array_pattern"));
         return self.$n(node_type, node_elements, self.$collection_map(lbrack_t, elements, rbrack_t));
-      }, $Default_array_pattern$135.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$find_pattern', $Default_find_pattern$137 = function $$find_pattern(lbrack_t, elements, rbrack_t) {
+      $def(self, '$find_pattern', function $$find_pattern(lbrack_t, elements, rbrack_t) {
         var self = this;
 
         return self.$n("find_pattern", elements, self.$collection_map(lbrack_t, elements, rbrack_t))
-      }, $Default_find_pattern$137.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$match_with_trailing_comma', $Default_match_with_trailing_comma$138 = function $$match_with_trailing_comma(match, comma_t) {
+      $def(self, '$match_with_trailing_comma', function $$match_with_trailing_comma(match, comma_t) {
         var self = this;
 
         return self.$n("match_with_trailing_comma", [match], self.$expr_map(match.$loc().$expression().$join(self.$loc(comma_t))))
-      }, $Default_match_with_trailing_comma$138.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$const_pattern', $Default_const_pattern$139 = function $$const_pattern(const$, ldelim_t, pattern, rdelim_t) {
+      $def(self, '$const_pattern', function $$const_pattern(const$, ldelim_t, pattern, rdelim_t) {
         var self = this;
 
-        return self.$n("const_pattern", [const$, pattern], $$$($$$($$($nesting, 'Source'), 'Map'), 'Collection').$new(self.$loc(ldelim_t), self.$loc(rdelim_t), const$.$loc().$expression().$join(self.$loc(rdelim_t))))
-      }, $Default_const_pattern$139.$$arity = 4);
+        return self.$n("const_pattern", [const$, pattern], $$$($$$($$('Source'), 'Map'), 'Collection').$new(self.$loc(ldelim_t), self.$loc(rdelim_t), const$.$loc().$expression().$join(self.$loc(rdelim_t))))
+      }, 4);
       
-      Opal.def(self, '$pin', $Default_pin$140 = function $$pin(pin_t, var$) {
+      $def(self, '$pin', function $$pin(pin_t, var$) {
         var self = this;
 
         return self.$n("pin", [var$], self.$send_unary_op_map(pin_t, var$))
-      }, $Default_pin$140.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$match_alt', $Default_match_alt$141 = function $$match_alt(left, pipe_t, right) {
+      $def(self, '$match_alt', function $$match_alt(left, pipe_t, right) {
         var self = this, source_map = nil;
 
         
         source_map = self.$binary_op_map(left, pipe_t, right);
         return self.$n("match_alt", [left, right], source_map);
-      }, $Default_match_alt$141.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$match_as', $Default_match_as$142 = function $$match_as(value, assoc_t, as) {
+      $def(self, '$match_as', function $$match_as(value, assoc_t, as) {
         var self = this, source_map = nil;
 
         
         source_map = self.$binary_op_map(value, assoc_t, as);
         return self.$n("match_as", [value, as], source_map);
-      }, $Default_match_as$142.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$match_nil_pattern', $Default_match_nil_pattern$143 = function $$match_nil_pattern(dstar_t, nil_t) {
+      $def(self, '$match_nil_pattern', function $$match_nil_pattern(dstar_t, nil_t) {
         var self = this;
 
         return self.$n0("match_nil_pattern", self.$arg_prefix_map(dstar_t, nil_t))
-      }, $Default_match_nil_pattern$143.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$match_pair', $Default_match_pair$144 = function $$match_pair(label_type, label, value) {
+      $def(self, '$match_pair', function $$match_pair(label_type, label, value) {
         var $a, $b, self = this, begin_t = nil, parts = nil, end_t = nil, label_loc = nil, var_name = nil;
 
-        if (label_type['$==']("label")) {
+        if ($eqeq(label_type, "label")) {
           
           self.$check_duplicate_pattern_key(label['$[]'](0), label['$[]'](1));
           return self.$pair_keyword(label, value);
         } else {
           
-          $b = label, $a = Opal.to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (parts = ($a[1] == null ? nil : $a[1])), (end_t = ($a[2] == null ? nil : $a[2])), $b;
+          $b = label, $a = $to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (parts = ($a[1] == null ? nil : $a[1])), (end_t = ($a[2] == null ? nil : $a[2])), $b;
           label_loc = self.$loc(begin_t).$join(self.$loc(end_t));
           if ($truthy((var_name = self.$static_string(parts)))) {
             self.$check_duplicate_pattern_key(var_name, label_loc)
@@ -22270,188 +19227,172 @@ Opal.modules["parser/builders/default"] = function(Opal) {
           };
           return self.$pair_quoted(begin_t, parts, end_t, value);
         }
-      }, $Default_match_pair$144.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$match_label', $Default_match_label$145 = function $$match_label(label_type, label) {
+      $def(self, '$match_label', function $$match_label(label_type, label) {
         var $a, $b, self = this, begin_t = nil, strings = nil, end_t = nil;
 
-        if (label_type['$==']("label")) {
+        if ($eqeq(label_type, "label")) {
           return self.$match_hash_var(label)
         } else {
           
-          $b = label, $a = Opal.to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (strings = ($a[1] == null ? nil : $a[1])), (end_t = ($a[2] == null ? nil : $a[2])), $b;
+          $b = label, $a = $to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (strings = ($a[1] == null ? nil : $a[1])), (end_t = ($a[2] == null ? nil : $a[2])), $b;
           return self.$match_hash_var_from_str(begin_t, strings, end_t);
         }
-      }, $Default_match_label$145.$$arity = 2);
+      }, 2);
       self.$private();
       
-      Opal.def(self, '$check_condition', $Default_check_condition$146 = function $$check_condition(cond) {
-        var $a, self = this, $case = nil, lhs = nil, rhs = nil, type = nil, $ret_or_20 = nil;
+      $def(self, '$check_condition', function $$check_condition(cond) {
+        var $a, self = this, $ret_or_1 = nil, lhs = nil, rhs = nil, type = nil, $ret_or_2 = nil;
 
-        return (function() {$case = cond.$type();
-        if ("masgn"['$===']($case)) {if ($truthy($rb_le(self.parser.$version(), 23))) {
-          return self.$diagnostic("error", "masgn_as_condition", nil, cond.$loc().$expression())
-        } else {
-          return cond
-        }}
-        else if ("begin"['$===']($case)) {if (cond.$children().$count()['$=='](1)) {
-          return cond.$updated(nil, [self.$check_condition(cond.$children().$last())])
-        } else {
-          return cond
-        }}
-        else if ("and"['$===']($case) || "or"['$===']($case) || "irange"['$===']($case) || "erange"['$===']($case)) {
-        $a = [].concat(Opal.to_a(cond)), (lhs = ($a[0] == null ? nil : $a[0])), (rhs = ($a[1] == null ? nil : $a[1])), $a;
-        type = (function() {$case = cond.$type();
-        if ("irange"['$===']($case)) {return "iflipflop"}
-        else if ("erange"['$===']($case)) {return "eflipflop"}
-        else { return nil }})();
-        if ($truthy((function() {if ($truthy(($ret_or_20 = ["and", "or"]['$include?'](cond.$type())))) {
-          return self.parser.$version()['$=='](18)
+        if ($eqeqeq("masgn", ($ret_or_1 = cond.$type()))) {
+          if ($truthy($rb_le(self.parser.$version(), 23))) {
+            return self.$diagnostic("error", "masgn_as_condition", nil, cond.$loc().$expression())
+          } else {
+            return cond
+          }
+        } else if ($eqeqeq("begin", $ret_or_1)) {
+          if ($eqeq(cond.$children().$count(), 1)) {
+            return cond.$updated(nil, [self.$check_condition(cond.$children().$last())])
+          } else {
+            return cond
+          }
+        } else if (($eqeqeq("and", $ret_or_1) || (($eqeqeq("or", $ret_or_1) || (($eqeqeq("irange", $ret_or_1) || ($eqeqeq("erange", $ret_or_1)))))))) {
+          
+          $a = [].concat($to_a(cond)), (lhs = ($a[0] == null ? nil : $a[0])), (rhs = ($a[1] == null ? nil : $a[1])), $a;
+          type = ($eqeqeq("irange", ($ret_or_2 = cond.$type())) ? ("iflipflop") : ($eqeqeq("erange", $ret_or_2) ? ("eflipflop") : (nil)));
+          if (($truthy(["and", "or"]['$include?'](cond.$type())) && ($eqeq(self.parser.$version(), 18)))) {
+            return cond
+          } else {
+            return cond.$updated(type, [self.$check_condition(lhs), self.$check_condition(rhs)])
+          };
+        } else if ($eqeqeq("regexp", $ret_or_1)) {
+          return self.$n("match_current_line", [cond], self.$expr_map(cond.$loc().$expression()))
         } else {
-          return $ret_or_20
-        }; return nil; })())) {
           return cond
-        } else {
-          return cond.$updated(type, [self.$check_condition(lhs), self.$check_condition(rhs)])
-        };}
-        else if ("regexp"['$===']($case)) {return self.$n("match_current_line", [cond], self.$expr_map(cond.$loc().$expression()))}
-        else {return cond}})()
-      }, $Default_check_condition$146.$$arity = 1);
+        }
+      }, 1);
       
-      Opal.def(self, '$check_duplicate_args', $Default_check_duplicate_args$147 = function $$check_duplicate_args(args, map) {
-        var $$148, self = this;
+      $def(self, '$check_duplicate_args', function $$check_duplicate_args(args, map) {
+        var self = this;
 
         
         
-        if (map == null) {
-          map = $hash2([], {});
-        };
-        return $send(args, 'each', [], ($$148 = function(this_arg){var self = $$148.$$s == null ? this : $$148.$$s, $case = nil;
+        if (map == null) map = $hash2([], {});;
+        return $send(args, 'each', [], function $$15(this_arg){var self = $$15.$$s == null ? this : $$15.$$s, $ret_or_1 = nil;
 
           
           
-          if (this_arg == null) {
-            this_arg = nil;
-          };
-          return (function() {$case = this_arg.$type();
-          if ("arg"['$===']($case) || "optarg"['$===']($case) || "restarg"['$===']($case) || "blockarg"['$===']($case) || "kwarg"['$===']($case) || "kwoptarg"['$===']($case) || "kwrestarg"['$===']($case) || "shadowarg"['$===']($case)) {return self.$check_duplicate_arg(this_arg, map)}
-          else if ("procarg0"['$===']($case)) {if ($truthy(this_arg.$children()['$[]'](0)['$is_a?']($$($nesting, 'Symbol')))) {
+          if (this_arg == null) this_arg = nil;;
+          if (($eqeqeq("arg", ($ret_or_1 = this_arg.$type())) || (($eqeqeq("optarg", $ret_or_1) || (($eqeqeq("restarg", $ret_or_1) || (($eqeqeq("blockarg", $ret_or_1) || (($eqeqeq("kwarg", $ret_or_1) || (($eqeqeq("kwoptarg", $ret_or_1) || (($eqeqeq("kwrestarg", $ret_or_1) || ($eqeqeq("shadowarg", $ret_or_1)))))))))))))))) {
             return self.$check_duplicate_arg(this_arg, map)
-          } else {
+          } else if ($eqeqeq("procarg0", $ret_or_1)) {
+            if ($truthy(this_arg.$children()['$[]'](0)['$is_a?']($$('Symbol')))) {
+              return self.$check_duplicate_arg(this_arg, map)
+            } else {
+              return self.$check_duplicate_args(this_arg.$children(), map)
+            }
+          } else if ($eqeqeq("mlhs", $ret_or_1)) {
             return self.$check_duplicate_args(this_arg.$children(), map)
-          }}
-          else if ("mlhs"['$===']($case)) {return self.$check_duplicate_args(this_arg.$children(), map)}
-          else { return nil }})();}, $$148.$$s = self, $$148.$$arity = 1, $$148));
-      }, $Default_check_duplicate_args$147.$$arity = -2);
+          } else {
+            return nil
+          };}, {$$arity: 1, $$s: self});
+      }, -2);
       
-      Opal.def(self, '$check_duplicate_arg', $Default_check_duplicate_arg$149 = function $$check_duplicate_arg(this_arg, map) {
+      $def(self, '$check_duplicate_arg', function $$check_duplicate_arg(this_arg, map) {
         var $a, self = this, this_name = nil, that_arg = nil, that_name = nil, $writer = nil;
 
         
         
-        if (map == null) {
-          map = $hash2([], {});
-        };
-        $a = [].concat(Opal.to_a(this_arg)), (this_name = ($a[0] == null ? nil : $a[0])), $a;
+        if (map == null) map = $hash2([], {});;
+        $a = [].concat($to_a(this_arg)), (this_name = ($a[0] == null ? nil : $a[0])), $a;
         that_arg = map['$[]'](this_name);
-        $a = [].concat(Opal.to_a(that_arg)), (that_name = ($a[0] == null ? nil : $a[0])), $a;
+        $a = [].concat($to_a(that_arg)), (that_name = ($a[0] == null ? nil : $a[0])), $a;
         if ($truthy(that_arg['$nil?']())) {
           
           $writer = [this_name, this_arg];
-          $send(map, '[]=', Opal.to_a($writer));
+          $send(map, '[]=', $to_a($writer));
           return $writer[$rb_minus($writer["length"], 1)];
         } else if ($truthy(self['$arg_name_collides?'](this_name, that_name))) {
           return self.$diagnostic("error", "duplicate_argument", nil, this_arg.$loc().$name(), [that_arg.$loc().$name()])
         } else {
           return nil
         };
-      }, $Default_check_duplicate_arg$149.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$validate_no_forward_arg_after_restarg', $Default_validate_no_forward_arg_after_restarg$150 = function $$validate_no_forward_arg_after_restarg(args) {
-        var $$151, self = this, restarg = nil, forward_arg = nil, $ret_or_21 = nil;
+      $def(self, '$validate_no_forward_arg_after_restarg', function $$validate_no_forward_arg_after_restarg(args) {
+        var self = this, restarg = nil, forward_arg = nil;
 
         
         restarg = nil;
         forward_arg = nil;
-        $send(args, 'each', [], ($$151 = function(arg){var self = $$151.$$s == null ? this : $$151.$$s, $case = nil;
+        $send(args, 'each', [], function $$16(arg){var $ret_or_1 = nil;
 
           
           
-          if (arg == null) {
-            arg = nil;
-          };
-          return (function() {$case = arg.$type();
-          if ("restarg"['$===']($case)) {return (restarg = arg)}
-          else if ("forward_arg"['$===']($case)) {return (forward_arg = arg)}
-          else { return nil }})();}, $$151.$$s = self, $$151.$$arity = 1, $$151));
-        if ($truthy((function() {if ($truthy(($ret_or_21 = forward_arg['$nil?']()['$!']()))) {
-          return restarg['$nil?']()['$!']()
-        } else {
-          return $ret_or_21
-        }; return nil; })())) {
+          if (arg == null) arg = nil;;
+          if ($eqeqeq("restarg", ($ret_or_1 = arg.$type()))) {
+            return (restarg = arg)
+          } else if ($eqeqeq("forward_arg", $ret_or_1)) {
+            return (forward_arg = arg)
+          } else {
+            return nil
+          };}, 1);
+        if (($not(forward_arg['$nil?']()) && ($not(restarg['$nil?']())))) {
           return self.$diagnostic("error", "forward_arg_after_restarg", nil, forward_arg.$loc().$expression(), [restarg.$loc().$expression()])
         } else {
           return nil
         };
-      }, $Default_validate_no_forward_arg_after_restarg$150.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$check_assignment_to_numparam', $Default_check_assignment_to_numparam$152 = function $$check_assignment_to_numparam(name, loc) {
-        var self = this, assigning_to_numparam = nil, $ret_or_22 = nil, $ret_or_23 = nil;
+      $def(self, '$check_assignment_to_numparam', function $$check_assignment_to_numparam(name, loc) {
+        var self = this, assigning_to_numparam = nil, $ret_or_1 = nil, $ret_or_2 = nil;
 
         
         if ($truthy($rb_lt(self.parser.$version(), 27))) {
-          return nil};
-        assigning_to_numparam = (function() {if ($truthy(($ret_or_22 = (function() {if ($truthy(($ret_or_23 = self.parser.$context()['$in_dynamic_block?']()))) {
-          return name['$=~'](/^_([1-9])$/)
-        } else {
-          return $ret_or_23
-        }; return nil; })()))) {
-          return self.parser.$max_numparam_stack()['$has_numparams?']()
-        } else {
-          return $ret_or_22
-        }; return nil; })();
+          return nil
+        };
+        assigning_to_numparam = ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = self.parser.$context()['$in_dynamic_block?']())) ? (name['$=~'](/^_([1-9])$/)) : ($ret_or_2)))) ? (self.parser.$max_numparam_stack()['$has_numparams?']()) : ($ret_or_1));
         if ($truthy(assigning_to_numparam)) {
           return self.$diagnostic("error", "cant_assign_to_numparam", $hash2(["name"], {"name": name}), loc)
         } else {
           return nil
         };
-      }, $Default_check_assignment_to_numparam$152.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$check_reserved_for_numparam', $Default_check_reserved_for_numparam$153 = function $$check_reserved_for_numparam(name, loc) {
+      $def(self, '$check_reserved_for_numparam', function $$check_reserved_for_numparam(name, loc) {
         var self = this;
 
         
         if ($truthy($rb_lt(self.parser.$version(), 30))) {
-          return nil};
+          return nil
+        };
         if ($truthy(name['$=~'](/^_([1-9])$/))) {
           return self.$diagnostic("error", "reserved_for_numparam", $hash2(["name"], {"name": name}), loc)
         } else {
           return nil
         };
-      }, $Default_check_reserved_for_numparam$153.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$arg_name_collides?', $Default_arg_name_collides$ques$154 = function(this_name, that_name) {
-        var self = this, $case = nil, $ret_or_24 = nil, $ret_or_25 = nil, $ret_or_26 = nil;
+      $def(self, '$arg_name_collides?', function $Default_arg_name_collides$ques$17(this_name, that_name) {
+        var self = this, $ret_or_1 = nil, $ret_or_2 = nil, $ret_or_3 = nil;
 
-        return (function() {$case = self.parser.$version();
-        if ((18)['$===']($case)) {return this_name['$=='](that_name)}
-        else if ((19)['$===']($case)) {if ($truthy(($ret_or_24 = this_name['$!=']("_")))) {
+        if ($eqeqeq(18, ($ret_or_1 = self.parser.$version()))) {
           return this_name['$=='](that_name)
-        } else {
-          return $ret_or_24
-        }}
-        else {if ($truthy(($ret_or_25 = (function() {if ($truthy(($ret_or_26 = this_name))) {
-          return this_name['$[]'](0)['$!=']("_")
-        } else {
-          return $ret_or_26
-        }; return nil; })()))) {
+        } else if ($eqeqeq(19, $ret_or_1)) {
+          if ($truthy(($ret_or_2 = this_name['$!=']("_")))) {
+            return this_name['$=='](that_name)
+          } else {
+            return $ret_or_2
+          }
+        } else if ($truthy(($ret_or_2 = ($truthy(($ret_or_3 = this_name)) ? (this_name['$[]'](0)['$!=']("_")) : ($ret_or_3))))) {
           return this_name['$=='](that_name)
         } else {
-          return $ret_or_25
-        }}})()
-      }, $Default_arg_name_collides$ques$154.$$arity = 2);
+          return $ret_or_2
+        }
+      }, 2);
       
-      Opal.def(self, '$check_lvar_name', $Default_check_lvar_name$155 = function $$check_lvar_name(name, loc) {
+      $def(self, '$check_lvar_name', function $$check_lvar_name(name, loc) {
         var self = this;
 
         if ($truthy(name['$=~'](/^[[[:lower:]]_][[[:alnum:]]_]*$/))) {
@@ -22459,151 +19400,144 @@ Opal.modules["parser/builders/default"] = function(Opal) {
         } else {
           return self.$diagnostic("error", "lvar_name", $hash2(["name"], {"name": name}), loc)
         }
-      }, $Default_check_lvar_name$155.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$check_duplicate_pattern_variable', $Default_check_duplicate_pattern_variable$156 = function $$check_duplicate_pattern_variable(name, loc) {
+      $def(self, '$check_duplicate_pattern_variable', function $$check_duplicate_pattern_variable(name, loc) {
         var self = this;
 
         
         if ($truthy(name.$to_s()['$start_with?']("_"))) {
-          return nil};
+          return nil
+        };
         if ($truthy(self.parser.$pattern_variables()['$declared?'](name))) {
-          self.$diagnostic("error", "duplicate_variable_name", $hash2(["name"], {"name": name.$to_s()}), loc)};
+          self.$diagnostic("error", "duplicate_variable_name", $hash2(["name"], {"name": name.$to_s()}), loc)
+        };
         return self.parser.$pattern_variables().$declare(name);
-      }, $Default_check_duplicate_pattern_variable$156.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$check_duplicate_pattern_key', $Default_check_duplicate_pattern_key$157 = function $$check_duplicate_pattern_key(name, loc) {
+      $def(self, '$check_duplicate_pattern_key', function $$check_duplicate_pattern_key(name, loc) {
         var self = this;
 
         
         if ($truthy(self.parser.$pattern_hash_keys()['$declared?'](name))) {
-          self.$diagnostic("error", "duplicate_pattern_key", $hash2(["name"], {"name": name.$to_s()}), loc)};
+          self.$diagnostic("error", "duplicate_pattern_key", $hash2(["name"], {"name": name.$to_s()}), loc)
+        };
         return self.parser.$pattern_hash_keys().$declare(name);
-      }, $Default_check_duplicate_pattern_key$157.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$n', $Default_n$158 = function $$n(type, children, source_map) {
-        var self = this;
-
-        return $$$($$($nesting, 'AST'), 'Node').$new(type, children, $hash2(["location"], {"location": source_map}))
-      }, $Default_n$158.$$arity = 3);
+      $def(self, '$n', function $$n(type, children, source_map) {
+        
+        return $$$($$('AST'), 'Node').$new(type, children, $hash2(["location"], {"location": source_map}))
+      }, 3);
       
-      Opal.def(self, '$n0', $Default_n0$159 = function $$n0(type, source_map) {
+      $def(self, '$n0', function $$n0(type, source_map) {
         var self = this;
 
         return self.$n(type, [], source_map)
-      }, $Default_n0$159.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$join_exprs', $Default_join_exprs$160 = function $$join_exprs(left_expr, right_expr) {
-        var self = this;
-
+      $def(self, '$join_exprs', function $$join_exprs(left_expr, right_expr) {
+        
         return left_expr.$loc().$expression().$join(right_expr.$loc().$expression())
-      }, $Default_join_exprs$160.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$token_map', $Default_token_map$161 = function $$token_map(token) {
+      $def(self, '$token_map', function $$token_map(token) {
         var self = this;
 
-        return $$$($$($nesting, 'Source'), 'Map').$new(self.$loc(token))
-      }, $Default_token_map$161.$$arity = 1);
+        return $$$($$('Source'), 'Map').$new(self.$loc(token))
+      }, 1);
       
-      Opal.def(self, '$delimited_string_map', $Default_delimited_string_map$162 = function $$delimited_string_map(string_t) {
+      $def(self, '$delimited_string_map', function $$delimited_string_map(string_t) {
         var self = this, str_range = nil, begin_l = nil, end_l = nil;
 
         
         str_range = self.$loc(string_t);
         begin_l = str_range.$with($hash2(["end_pos"], {"end_pos": $rb_plus(str_range.$begin_pos(), 1)}));
         end_l = str_range.$with($hash2(["begin_pos"], {"begin_pos": $rb_minus(str_range.$end_pos(), 1)}));
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Collection').$new(begin_l, end_l, self.$loc(string_t));
-      }, $Default_delimited_string_map$162.$$arity = 1);
+        return $$$($$$($$('Source'), 'Map'), 'Collection').$new(begin_l, end_l, self.$loc(string_t));
+      }, 1);
       
-      Opal.def(self, '$prefix_string_map', $Default_prefix_string_map$163 = function $$prefix_string_map(symbol) {
+      $def(self, '$prefix_string_map', function $$prefix_string_map(symbol) {
         var self = this, str_range = nil, begin_l = nil;
 
         
         str_range = self.$loc(symbol);
         begin_l = str_range.$with($hash2(["end_pos"], {"end_pos": $rb_plus(str_range.$begin_pos(), 1)}));
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Collection').$new(begin_l, nil, self.$loc(symbol));
-      }, $Default_prefix_string_map$163.$$arity = 1);
+        return $$$($$$($$('Source'), 'Map'), 'Collection').$new(begin_l, nil, self.$loc(symbol));
+      }, 1);
       
-      Opal.def(self, '$unquoted_map', $Default_unquoted_map$164 = function $$unquoted_map(token) {
+      $def(self, '$unquoted_map', function $$unquoted_map(token) {
         var self = this;
 
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Collection').$new(nil, nil, self.$loc(token))
-      }, $Default_unquoted_map$164.$$arity = 1);
+        return $$$($$$($$('Source'), 'Map'), 'Collection').$new(nil, nil, self.$loc(token))
+      }, 1);
       
-      Opal.def(self, '$pair_keyword_map', $Default_pair_keyword_map$165 = function $$pair_keyword_map(key_t, value_e) {
+      $def(self, '$pair_keyword_map', function $$pair_keyword_map(key_t, value_e) {
         var self = this, key_range = nil, key_l = nil, colon_l = nil;
 
         
         key_range = self.$loc(key_t);
         key_l = key_range.$adjust($hash2(["end_pos"], {"end_pos": -1}));
         colon_l = key_range.$with($hash2(["begin_pos"], {"begin_pos": $rb_minus(key_range.$end_pos(), 1)}));
-        return [$$$($$$($$($nesting, 'Source'), 'Map'), 'Collection').$new(nil, nil, key_l), $$$($$$($$($nesting, 'Source'), 'Map'), 'Operator').$new(colon_l, key_range.$join(value_e.$loc().$expression()))];
-      }, $Default_pair_keyword_map$165.$$arity = 2);
+        return [$$$($$$($$('Source'), 'Map'), 'Collection').$new(nil, nil, key_l), $$$($$$($$('Source'), 'Map'), 'Operator').$new(colon_l, key_range.$join(value_e.$loc().$expression()))];
+      }, 2);
       
-      Opal.def(self, '$pair_quoted_map', $Default_pair_quoted_map$166 = function $$pair_quoted_map(begin_t, end_t, value_e) {
+      $def(self, '$pair_quoted_map', function $$pair_quoted_map(begin_t, end_t, value_e) {
         var self = this, end_l = nil, quote_l = nil, colon_l = nil;
 
         
         end_l = self.$loc(end_t);
         quote_l = end_l.$with($hash2(["begin_pos", "end_pos"], {"begin_pos": $rb_minus(end_l.$end_pos(), 2), "end_pos": $rb_minus(end_l.$end_pos(), 1)}));
         colon_l = end_l.$with($hash2(["begin_pos"], {"begin_pos": $rb_minus(end_l.$end_pos(), 1)}));
-        return [[self.$value(end_t), quote_l], $$$($$$($$($nesting, 'Source'), 'Map'), 'Operator').$new(colon_l, self.$loc(begin_t).$join(value_e.$loc().$expression()))];
-      }, $Default_pair_quoted_map$166.$$arity = 3);
+        return [[self.$value(end_t), quote_l], $$$($$$($$('Source'), 'Map'), 'Operator').$new(colon_l, self.$loc(begin_t).$join(value_e.$loc().$expression()))];
+      }, 3);
       
-      Opal.def(self, '$expr_map', $Default_expr_map$167 = function $$expr_map(loc) {
-        var self = this;
-
-        return $$$($$($nesting, 'Source'), 'Map').$new(loc)
-      }, $Default_expr_map$167.$$arity = 1);
+      $def(self, '$expr_map', function $$expr_map(loc) {
+        
+        return $$$($$('Source'), 'Map').$new(loc)
+      }, 1);
       
-      Opal.def(self, '$collection_map', $Default_collection_map$168 = function $$collection_map(begin_t, parts, end_t) {
-        var self = this, $ret_or_27 = nil, expr_l = nil;
+      $def(self, '$collection_map', function $$collection_map(begin_t, parts, end_t) {
+        var self = this, expr_l = nil;
 
         
-        if ($truthy((function() {if ($truthy(($ret_or_27 = begin_t['$nil?']()))) {
-          return $ret_or_27
-        } else {
-          return end_t['$nil?']()
-        }; return nil; })())) {
+        if (($truthy(begin_t['$nil?']()) || ($truthy(end_t['$nil?']())))) {
           if ($truthy(parts['$any?']())) {
             expr_l = self.$join_exprs(parts.$first(), parts.$last())
-          } else if ($truthy(begin_t['$nil?']()['$!']())) {
+          } else if ($not(begin_t['$nil?']())) {
             expr_l = self.$loc(begin_t)
-          } else if ($truthy(end_t['$nil?']()['$!']())) {
-            expr_l = self.$loc(end_t)}
+          } else if ($not(end_t['$nil?']())) {
+            expr_l = self.$loc(end_t)
+          }
         } else {
           expr_l = self.$loc(begin_t).$join(self.$loc(end_t))
         };
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Collection').$new(self.$loc(begin_t), self.$loc(end_t), expr_l);
-      }, $Default_collection_map$168.$$arity = 3);
+        return $$$($$$($$('Source'), 'Map'), 'Collection').$new(self.$loc(begin_t), self.$loc(end_t), expr_l);
+      }, 3);
       
-      Opal.def(self, '$string_map', $Default_string_map$169 = function $$string_map(begin_t, parts, end_t) {
-        var self = this, $ret_or_28 = nil, expr_l = nil;
+      $def(self, '$string_map', function $$string_map(begin_t, parts, end_t) {
+        var self = this, expr_l = nil;
 
-        if ($truthy((function() {if ($truthy(($ret_or_28 = begin_t))) {
-          return self.$value(begin_t)['$start_with?']("<<")
-        } else {
-          return $ret_or_28
-        }; return nil; })())) {
+        if (($truthy(begin_t) && ($truthy(self.$value(begin_t)['$start_with?']("<<"))))) {
           
           if ($truthy(parts['$any?']())) {
             expr_l = self.$join_exprs(parts.$first(), parts.$last())
           } else {
             expr_l = self.$loc(end_t).$begin()
           };
-          return $$$($$$($$($nesting, 'Source'), 'Map'), 'Heredoc').$new(self.$loc(begin_t), expr_l, self.$loc(end_t));
+          return $$$($$$($$('Source'), 'Map'), 'Heredoc').$new(self.$loc(begin_t), expr_l, self.$loc(end_t));
         } else {
           return self.$collection_map(begin_t, parts, end_t)
         }
-      }, $Default_string_map$169.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$regexp_map', $Default_regexp_map$170 = function $$regexp_map(begin_t, end_t, options_e) {
+      $def(self, '$regexp_map', function $$regexp_map(begin_t, end_t, options_e) {
         var self = this;
 
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Collection').$new(self.$loc(begin_t), self.$loc(end_t), self.$loc(begin_t).$join(options_e.$loc().$expression()))
-      }, $Default_regexp_map$170.$$arity = 3);
+        return $$$($$$($$('Source'), 'Map'), 'Collection').$new(self.$loc(begin_t), self.$loc(end_t), self.$loc(begin_t).$join(options_e.$loc().$expression()))
+      }, 3);
       
-      Opal.def(self, '$constant_map', $Default_constant_map$171 = function $$constant_map(scope, colon2_t, name_t) {
+      $def(self, '$constant_map', function $$constant_map(scope, colon2_t, name_t) {
         var self = this, expr_l = nil;
 
         
@@ -22612,78 +19546,69 @@ Opal.modules["parser/builders/default"] = function(Opal) {
         } else {
           expr_l = scope.$loc().$expression().$join(self.$loc(name_t))
         };
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Constant').$new(self.$loc(colon2_t), self.$loc(name_t), expr_l);
-      }, $Default_constant_map$171.$$arity = 3);
+        return $$$($$$($$('Source'), 'Map'), 'Constant').$new(self.$loc(colon2_t), self.$loc(name_t), expr_l);
+      }, 3);
       
-      Opal.def(self, '$variable_map', $Default_variable_map$172 = function $$variable_map(name_t) {
+      $def(self, '$variable_map', function $$variable_map(name_t) {
         var self = this;
 
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Variable').$new(self.$loc(name_t))
-      }, $Default_variable_map$172.$$arity = 1);
+        return $$$($$$($$('Source'), 'Map'), 'Variable').$new(self.$loc(name_t))
+      }, 1);
       
-      Opal.def(self, '$binary_op_map', $Default_binary_op_map$173 = function $$binary_op_map(left_e, op_t, right_e) {
+      $def(self, '$binary_op_map', function $$binary_op_map(left_e, op_t, right_e) {
         var self = this;
 
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Operator').$new(self.$loc(op_t), self.$join_exprs(left_e, right_e))
-      }, $Default_binary_op_map$173.$$arity = 3);
+        return $$$($$$($$('Source'), 'Map'), 'Operator').$new(self.$loc(op_t), self.$join_exprs(left_e, right_e))
+      }, 3);
       
-      Opal.def(self, '$unary_op_map', $Default_unary_op_map$174 = function $$unary_op_map(op_t, arg_e) {
+      $def(self, '$unary_op_map', function $$unary_op_map(op_t, arg_e) {
         var self = this, expr_l = nil;
 
         
         
-        if (arg_e == null) {
-          arg_e = nil;
-        };
+        if (arg_e == null) arg_e = nil;;
         if ($truthy(arg_e['$nil?']())) {
           expr_l = self.$loc(op_t)
         } else {
           expr_l = self.$loc(op_t).$join(arg_e.$loc().$expression())
         };
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Operator').$new(self.$loc(op_t), expr_l);
-      }, $Default_unary_op_map$174.$$arity = -2);
+        return $$$($$$($$('Source'), 'Map'), 'Operator').$new(self.$loc(op_t), expr_l);
+      }, -2);
       
-      Opal.def(self, '$range_map', $Default_range_map$175 = function $$range_map(start_e, op_t, end_e) {
-        var self = this, $ret_or_29 = nil, expr_l = nil;
+      $def(self, '$range_map', function $$range_map(start_e, op_t, end_e) {
+        var self = this, expr_l = nil;
 
         
-        if ($truthy((function() {if ($truthy(($ret_or_29 = start_e))) {
-          return end_e
-        } else {
-          return $ret_or_29
-        }; return nil; })())) {
+        if (($truthy(start_e) && ($truthy(end_e)))) {
           expr_l = self.$join_exprs(start_e, end_e)
         } else if ($truthy(start_e)) {
           expr_l = start_e.$loc().$expression().$join(self.$loc(op_t))
         } else if ($truthy(end_e)) {
-          expr_l = self.$loc(op_t).$join(end_e.$loc().$expression())};
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Operator').$new(self.$loc(op_t), expr_l);
-      }, $Default_range_map$175.$$arity = 3);
+          expr_l = self.$loc(op_t).$join(end_e.$loc().$expression())
+        };
+        return $$$($$$($$('Source'), 'Map'), 'Operator').$new(self.$loc(op_t), expr_l);
+      }, 3);
       
-      Opal.def(self, '$arg_prefix_map', $Default_arg_prefix_map$176 = function $$arg_prefix_map(op_t, name_t) {
+      $def(self, '$arg_prefix_map', function $$arg_prefix_map(op_t, name_t) {
         var self = this, expr_l = nil;
 
         
         
-        if (name_t == null) {
-          name_t = nil;
-        };
+        if (name_t == null) name_t = nil;;
         if ($truthy(name_t['$nil?']())) {
           expr_l = self.$loc(op_t)
         } else {
           expr_l = self.$loc(op_t).$join(self.$loc(name_t))
         };
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Variable').$new(self.$loc(name_t), expr_l);
-      }, $Default_arg_prefix_map$176.$$arity = -2);
+        return $$$($$$($$('Source'), 'Map'), 'Variable').$new(self.$loc(name_t), expr_l);
+      }, -2);
       
-      Opal.def(self, '$kwarg_map', $Default_kwarg_map$177 = function $$kwarg_map(name_t, value_e) {
+      $def(self, '$kwarg_map', function $$kwarg_map(name_t, value_e) {
         var self = this, label_range = nil, name_range = nil, expr_l = nil;
 
         
         
-        if (value_e == null) {
-          value_e = nil;
-        };
+        if (value_e == null) value_e = nil;;
         label_range = self.$loc(name_t);
         name_range = label_range.$adjust($hash2(["end_pos"], {"end_pos": -1}));
         if ($truthy(value_e)) {
@@ -22691,74 +19616,70 @@ Opal.modules["parser/builders/default"] = function(Opal) {
         } else {
           expr_l = self.$loc(name_t)
         };
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Variable').$new(name_range, expr_l);
-      }, $Default_kwarg_map$177.$$arity = -2);
+        return $$$($$$($$('Source'), 'Map'), 'Variable').$new(name_range, expr_l);
+      }, -2);
       
-      Opal.def(self, '$module_definition_map', $Default_module_definition_map$178 = function $$module_definition_map(keyword_t, name_e, operator_t, end_t) {
+      $def(self, '$module_definition_map', function $$module_definition_map(keyword_t, name_e, operator_t, end_t) {
         var self = this, name_l = nil;
 
         
         if ($truthy(name_e)) {
-          name_l = name_e.$loc().$expression()};
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Definition').$new(self.$loc(keyword_t), self.$loc(operator_t), name_l, self.$loc(end_t));
-      }, $Default_module_definition_map$178.$$arity = 4);
+          name_l = name_e.$loc().$expression()
+        };
+        return $$$($$$($$('Source'), 'Map'), 'Definition').$new(self.$loc(keyword_t), self.$loc(operator_t), name_l, self.$loc(end_t));
+      }, 4);
       
-      Opal.def(self, '$definition_map', $Default_definition_map$179 = function $$definition_map(keyword_t, operator_t, name_t, end_t) {
+      $def(self, '$definition_map', function $$definition_map(keyword_t, operator_t, name_t, end_t) {
         var self = this;
 
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'MethodDefinition').$new(self.$loc(keyword_t), self.$loc(operator_t), self.$loc(name_t), self.$loc(end_t), nil, nil)
-      }, $Default_definition_map$179.$$arity = 4);
+        return $$$($$$($$('Source'), 'Map'), 'MethodDefinition').$new(self.$loc(keyword_t), self.$loc(operator_t), self.$loc(name_t), self.$loc(end_t), nil, nil)
+      }, 4);
       
-      Opal.def(self, '$endless_definition_map', $Default_endless_definition_map$180 = function $$endless_definition_map(keyword_t, operator_t, name_t, assignment_t, body_e) {
+      $def(self, '$endless_definition_map', function $$endless_definition_map(keyword_t, operator_t, name_t, assignment_t, body_e) {
         var self = this, body_l = nil;
 
         
         body_l = body_e.$loc().$expression();
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'MethodDefinition').$new(self.$loc(keyword_t), self.$loc(operator_t), self.$loc(name_t), nil, self.$loc(assignment_t), body_l);
-      }, $Default_endless_definition_map$180.$$arity = 5);
+        return $$$($$$($$('Source'), 'Map'), 'MethodDefinition').$new(self.$loc(keyword_t), self.$loc(operator_t), self.$loc(name_t), nil, self.$loc(assignment_t), body_l);
+      }, 5);
       
-      Opal.def(self, '$send_map', $Default_send_map$181 = function $$send_map(receiver_e, dot_t, selector_t, begin_t, args, end_t) {
+      $def(self, '$send_map', function $$send_map(receiver_e, dot_t, selector_t, begin_t, args, end_t) {
         var self = this, begin_l = nil, end_l = nil;
 
         
         
-        if (begin_t == null) {
-          begin_t = nil;
-        };
+        if (begin_t == null) begin_t = nil;;
         
-        if (args == null) {
-          args = [];
-        };
+        if (args == null) args = [];;
         
-        if (end_t == null) {
-          end_t = nil;
-        };
+        if (end_t == null) end_t = nil;;
         if ($truthy(receiver_e)) {
           begin_l = receiver_e.$loc().$expression()
         } else if ($truthy(selector_t)) {
-          begin_l = self.$loc(selector_t)};
+          begin_l = self.$loc(selector_t)
+        };
         if ($truthy(end_t)) {
           end_l = self.$loc(end_t)
         } else if ($truthy(args['$any?']())) {
           end_l = args.$last().$loc().$expression()
         } else if ($truthy(selector_t)) {
-          end_l = self.$loc(selector_t)};
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Send').$new(self.$loc(dot_t), self.$loc(selector_t), self.$loc(begin_t), self.$loc(end_t), begin_l.$join(end_l));
-      }, $Default_send_map$181.$$arity = -4);
+          end_l = self.$loc(selector_t)
+        };
+        return $$$($$$($$('Source'), 'Map'), 'Send').$new(self.$loc(dot_t), self.$loc(selector_t), self.$loc(begin_t), self.$loc(end_t), begin_l.$join(end_l));
+      }, -4);
       
-      Opal.def(self, '$var_send_map', $Default_var_send_map$182 = function $$var_send_map(variable_e) {
-        var self = this;
-
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Send').$new(nil, variable_e.$loc().$expression(), nil, nil, variable_e.$loc().$expression())
-      }, $Default_var_send_map$182.$$arity = 1);
+      $def(self, '$var_send_map', function $$var_send_map(variable_e) {
+        
+        return $$$($$$($$('Source'), 'Map'), 'Send').$new(nil, variable_e.$loc().$expression(), nil, nil, variable_e.$loc().$expression())
+      }, 1);
       
-      Opal.def(self, '$send_binary_op_map', $Default_send_binary_op_map$183 = function $$send_binary_op_map(lhs_e, selector_t, rhs_e) {
+      $def(self, '$send_binary_op_map', function $$send_binary_op_map(lhs_e, selector_t, rhs_e) {
         var self = this;
 
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Send').$new(nil, self.$loc(selector_t), nil, nil, self.$join_exprs(lhs_e, rhs_e))
-      }, $Default_send_binary_op_map$183.$$arity = 3);
+        return $$$($$$($$('Source'), 'Map'), 'Send').$new(nil, self.$loc(selector_t), nil, nil, self.$join_exprs(lhs_e, rhs_e))
+      }, 3);
       
-      Opal.def(self, '$send_unary_op_map', $Default_send_unary_op_map$184 = function $$send_unary_op_map(selector_t, arg_e) {
+      $def(self, '$send_unary_op_map', function $$send_unary_op_map(selector_t, arg_e) {
         var self = this, expr_l = nil;
 
         
@@ -22767,132 +19688,105 @@ Opal.modules["parser/builders/default"] = function(Opal) {
         } else {
           expr_l = self.$loc(selector_t).$join(arg_e.$loc().$expression())
         };
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Send').$new(nil, self.$loc(selector_t), nil, nil, expr_l);
-      }, $Default_send_unary_op_map$184.$$arity = 2);
+        return $$$($$$($$('Source'), 'Map'), 'Send').$new(nil, self.$loc(selector_t), nil, nil, expr_l);
+      }, 2);
       
-      Opal.def(self, '$index_map', $Default_index_map$185 = function $$index_map(receiver_e, lbrack_t, rbrack_t) {
+      $def(self, '$index_map', function $$index_map(receiver_e, lbrack_t, rbrack_t) {
         var self = this;
 
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Index').$new(self.$loc(lbrack_t), self.$loc(rbrack_t), receiver_e.$loc().$expression().$join(self.$loc(rbrack_t)))
-      }, $Default_index_map$185.$$arity = 3);
+        return $$$($$$($$('Source'), 'Map'), 'Index').$new(self.$loc(lbrack_t), self.$loc(rbrack_t), receiver_e.$loc().$expression().$join(self.$loc(rbrack_t)))
+      }, 3);
       
-      Opal.def(self, '$send_index_map', $Default_send_index_map$186 = function $$send_index_map(receiver_e, lbrack_t, rbrack_t) {
+      $def(self, '$send_index_map', function $$send_index_map(receiver_e, lbrack_t, rbrack_t) {
         var self = this;
 
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Send').$new(nil, self.$loc(lbrack_t).$join(self.$loc(rbrack_t)), nil, nil, receiver_e.$loc().$expression().$join(self.$loc(rbrack_t)))
-      }, $Default_send_index_map$186.$$arity = 3);
+        return $$$($$$($$('Source'), 'Map'), 'Send').$new(nil, self.$loc(lbrack_t).$join(self.$loc(rbrack_t)), nil, nil, receiver_e.$loc().$expression().$join(self.$loc(rbrack_t)))
+      }, 3);
       
-      Opal.def(self, '$block_map', $Default_block_map$187 = function $$block_map(receiver_l, begin_t, end_t) {
+      $def(self, '$block_map', function $$block_map(receiver_l, begin_t, end_t) {
         var self = this;
 
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Collection').$new(self.$loc(begin_t), self.$loc(end_t), receiver_l.$join(self.$loc(end_t)))
-      }, $Default_block_map$187.$$arity = 3);
+        return $$$($$$($$('Source'), 'Map'), 'Collection').$new(self.$loc(begin_t), self.$loc(end_t), receiver_l.$join(self.$loc(end_t)))
+      }, 3);
       
-      Opal.def(self, '$keyword_map', $Default_keyword_map$188 = function $$keyword_map(keyword_t, begin_t, args, end_t) {
-        var self = this, $ret_or_30 = nil, end_l = nil, $ret_or_31 = nil, $ret_or_32 = nil;
+      $def(self, '$keyword_map', function $$keyword_map(keyword_t, begin_t, args, end_t) {
+        var self = this, $ret_or_1 = nil, end_l = nil;
 
         
-        args = (function() {if ($truthy(($ret_or_30 = args))) {
-          return $ret_or_30
-        } else {
-          return []
-        }; return nil; })();
+        args = ($truthy(($ret_or_1 = args)) ? ($ret_or_1) : ([]));
         if ($truthy(end_t)) {
           end_l = self.$loc(end_t)
-        } else if ($truthy((function() {if ($truthy(($ret_or_31 = args['$any?']()))) {
-          return args.$last()['$nil?']()['$!']()
-        } else {
-          return $ret_or_31
-        }; return nil; })())) {
+        } else if (($truthy(args['$any?']()) && ($not(args.$last()['$nil?']())))) {
           end_l = args.$last().$loc().$expression()
-        } else if ($truthy((function() {if ($truthy(($ret_or_32 = args['$any?']()))) {
-          return $rb_gt(args.$count(), 1)
-        } else {
-          return $ret_or_32
-        }; return nil; })())) {
+        } else if (($truthy(args['$any?']()) && ($truthy($rb_gt(args.$count(), 1))))) {
           end_l = args['$[]'](-2).$loc().$expression()
         } else {
           end_l = self.$loc(keyword_t)
         };
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Keyword').$new(self.$loc(keyword_t), self.$loc(begin_t), self.$loc(end_t), self.$loc(keyword_t).$join(end_l));
-      }, $Default_keyword_map$188.$$arity = 4);
+        return $$$($$$($$('Source'), 'Map'), 'Keyword').$new(self.$loc(keyword_t), self.$loc(begin_t), self.$loc(end_t), self.$loc(keyword_t).$join(end_l));
+      }, 4);
       
-      Opal.def(self, '$keyword_mod_map', $Default_keyword_mod_map$189 = function $$keyword_mod_map(pre_e, keyword_t, post_e) {
+      $def(self, '$keyword_mod_map', function $$keyword_mod_map(pre_e, keyword_t, post_e) {
         var self = this;
 
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Keyword').$new(self.$loc(keyword_t), nil, nil, self.$join_exprs(pre_e, post_e))
-      }, $Default_keyword_mod_map$189.$$arity = 3);
+        return $$$($$$($$('Source'), 'Map'), 'Keyword').$new(self.$loc(keyword_t), nil, nil, self.$join_exprs(pre_e, post_e))
+      }, 3);
       
-      Opal.def(self, '$condition_map', $Default_condition_map$190 = function $$condition_map(keyword_t, cond_e, begin_t, body_e, else_t, else_e, end_t) {
-        var self = this, end_l = nil, $ret_or_33 = nil, $ret_or_34 = nil;
+      $def(self, '$condition_map', function $$condition_map(keyword_t, cond_e, begin_t, body_e, else_t, else_e, end_t) {
+        var self = this, end_l = nil;
 
         
         if ($truthy(end_t)) {
           end_l = self.$loc(end_t)
-        } else if ($truthy((function() {if ($truthy(($ret_or_33 = else_e))) {
-          return else_e.$loc().$expression()
-        } else {
-          return $ret_or_33
-        }; return nil; })())) {
+        } else if (($truthy(else_e) && ($truthy(else_e.$loc().$expression())))) {
           end_l = else_e.$loc().$expression()
         } else if ($truthy(self.$loc(else_t))) {
           end_l = self.$loc(else_t)
-        } else if ($truthy((function() {if ($truthy(($ret_or_34 = body_e))) {
-          return body_e.$loc().$expression()
-        } else {
-          return $ret_or_34
-        }; return nil; })())) {
+        } else if (($truthy(body_e) && ($truthy(body_e.$loc().$expression())))) {
           end_l = body_e.$loc().$expression()
         } else if ($truthy(self.$loc(begin_t))) {
           end_l = self.$loc(begin_t)
         } else {
           end_l = cond_e.$loc().$expression()
         };
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Condition').$new(self.$loc(keyword_t), self.$loc(begin_t), self.$loc(else_t), self.$loc(end_t), self.$loc(keyword_t).$join(end_l));
-      }, $Default_condition_map$190.$$arity = 7);
+        return $$$($$$($$('Source'), 'Map'), 'Condition').$new(self.$loc(keyword_t), self.$loc(begin_t), self.$loc(else_t), self.$loc(end_t), self.$loc(keyword_t).$join(end_l));
+      }, 7);
       
-      Opal.def(self, '$ternary_map', $Default_ternary_map$191 = function $$ternary_map(begin_e, question_t, mid_e, colon_t, end_e) {
+      $def(self, '$ternary_map', function $$ternary_map(begin_e, question_t, mid_e, colon_t, end_e) {
         var self = this;
 
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Ternary').$new(self.$loc(question_t), self.$loc(colon_t), self.$join_exprs(begin_e, end_e))
-      }, $Default_ternary_map$191.$$arity = 5);
+        return $$$($$$($$('Source'), 'Map'), 'Ternary').$new(self.$loc(question_t), self.$loc(colon_t), self.$join_exprs(begin_e, end_e))
+      }, 5);
       
-      Opal.def(self, '$for_map', $Default_for_map$192 = function $$for_map(keyword_t, in_t, begin_t, end_t) {
+      $def(self, '$for_map', function $$for_map(keyword_t, in_t, begin_t, end_t) {
         var self = this;
 
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'For').$new(self.$loc(keyword_t), self.$loc(in_t), self.$loc(begin_t), self.$loc(end_t), self.$loc(keyword_t).$join(self.$loc(end_t)))
-      }, $Default_for_map$192.$$arity = 4);
+        return $$$($$$($$('Source'), 'Map'), 'For').$new(self.$loc(keyword_t), self.$loc(in_t), self.$loc(begin_t), self.$loc(end_t), self.$loc(keyword_t).$join(self.$loc(end_t)))
+      }, 4);
       
-      Opal.def(self, '$rescue_body_map', $Default_rescue_body_map$193 = function $$rescue_body_map(keyword_t, exc_list_e, assoc_t, exc_var_e, then_t, compstmt_e) {
-        var self = this, end_l = nil, $ret_or_35 = nil, $ret_or_36 = nil, $ret_or_37 = nil;
+      $def(self, '$rescue_body_map', function $$rescue_body_map(keyword_t, exc_list_e, assoc_t, exc_var_e, then_t, compstmt_e) {
+        var self = this, end_l = nil;
 
         
         if ($truthy(compstmt_e)) {
-          end_l = compstmt_e.$loc().$expression()};
-        if ($truthy((function() {if ($truthy(($ret_or_35 = end_l['$nil?']()))) {
-          return then_t
-        } else {
-          return $ret_or_35
-        }; return nil; })())) {
-          end_l = self.$loc(then_t)};
-        if ($truthy((function() {if ($truthy(($ret_or_36 = end_l['$nil?']()))) {
-          return exc_var_e
-        } else {
-          return $ret_or_36
-        }; return nil; })())) {
-          end_l = exc_var_e.$loc().$expression()};
-        if ($truthy((function() {if ($truthy(($ret_or_37 = end_l['$nil?']()))) {
-          return exc_list_e
-        } else {
-          return $ret_or_37
-        }; return nil; })())) {
-          end_l = exc_list_e.$loc().$expression()};
+          end_l = compstmt_e.$loc().$expression()
+        };
+        if (($truthy(end_l['$nil?']()) && ($truthy(then_t)))) {
+          end_l = self.$loc(then_t)
+        };
+        if (($truthy(end_l['$nil?']()) && ($truthy(exc_var_e)))) {
+          end_l = exc_var_e.$loc().$expression()
+        };
+        if (($truthy(end_l['$nil?']()) && ($truthy(exc_list_e)))) {
+          end_l = exc_list_e.$loc().$expression()
+        };
         if ($truthy(end_l['$nil?']())) {
-          end_l = self.$loc(keyword_t)};
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'RescueBody').$new(self.$loc(keyword_t), self.$loc(assoc_t), self.$loc(then_t), self.$loc(keyword_t).$join(end_l));
-      }, $Default_rescue_body_map$193.$$arity = 6);
+          end_l = self.$loc(keyword_t)
+        };
+        return $$$($$$($$('Source'), 'Map'), 'RescueBody').$new(self.$loc(keyword_t), self.$loc(assoc_t), self.$loc(then_t), self.$loc(keyword_t).$join(end_l));
+      }, 6);
       
-      Opal.def(self, '$eh_keyword_map', $Default_eh_keyword_map$194 = function $$eh_keyword_map(compstmt_e, keyword_t, body_es, else_t, else_e) {
+      $def(self, '$eh_keyword_map', function $$eh_keyword_map(compstmt_e, keyword_t, body_es, else_t, else_e) {
         var self = this, begin_l = nil, end_l = nil;
 
         
@@ -22911,195 +19805,164 @@ Opal.modules["parser/builders/default"] = function(Opal) {
           } else {
             end_l = else_e.$loc().$expression()
           }
-        } else if ($truthy(body_es.$last()['$nil?']()['$!']())) {
+        } else if ($not(body_es.$last()['$nil?']())) {
           end_l = body_es.$last().$loc().$expression()
         } else {
           end_l = self.$loc(keyword_t)
         };
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Condition').$new(self.$loc(keyword_t), nil, self.$loc(else_t), nil, begin_l.$join(end_l));
-      }, $Default_eh_keyword_map$194.$$arity = 5);
+        return $$$($$$($$('Source'), 'Map'), 'Condition').$new(self.$loc(keyword_t), nil, self.$loc(else_t), nil, begin_l.$join(end_l));
+      }, 5);
       
-      Opal.def(self, '$guard_map', $Default_guard_map$195 = function $$guard_map(keyword_t, guard_body_e) {
+      $def(self, '$guard_map', function $$guard_map(keyword_t, guard_body_e) {
         var self = this, keyword_l = nil, guard_body_l = nil;
 
         
         keyword_l = self.$loc(keyword_t);
         guard_body_l = guard_body_e.$loc().$expression();
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Keyword').$new(keyword_l, nil, nil, keyword_l.$join(guard_body_l));
-      }, $Default_guard_map$195.$$arity = 2);
+        return $$$($$$($$('Source'), 'Map'), 'Keyword').$new(keyword_l, nil, nil, keyword_l.$join(guard_body_l));
+      }, 2);
       
-      Opal.def(self, '$static_string', $Default_static_string$196 = function $$static_string(nodes) {try {
+      $def(self, '$static_string', function $$static_string(nodes) {try {
 
-        var $$197, self = this;
+        var self = this;
 
-        return $send(nodes, 'map', [], ($$197 = function(node){var self = $$197.$$s == null ? this : $$197.$$s, $case = nil, string = nil;
+        return $send(nodes, 'map', [], function $$18(node){var self = $$18.$$s == null ? this : $$18.$$s, $ret_or_1 = nil, string = nil;
 
           
           
-          if (node == null) {
-            node = nil;
-          };
-          return (function() {$case = node.$type();
-          if ("str"['$===']($case)) {return node.$children()['$[]'](0)}
-          else if ("begin"['$===']($case)) {if ($truthy((string = self.$static_string(node.$children())))) {
-            return string
+          if (node == null) node = nil;;
+          if ($eqeqeq("str", ($ret_or_1 = node.$type()))) {
+            return node.$children()['$[]'](0)
+          } else if ($eqeqeq("begin", $ret_or_1)) {
+            if ($truthy((string = self.$static_string(node.$children())))) {
+              return string
+            } else {
+              Opal.ret(nil)
+            }
           } else {
             Opal.ret(nil)
-          }}
-          else {Opal.ret(nil)}})();}, $$197.$$s = self, $$197.$$arity = 1, $$197)).$join()
+          };}, {$$arity: 1, $$s: self}).$join()
         } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
-      }, $Default_static_string$196.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$static_regexp', $Default_static_regexp$198 = function $$static_regexp(parts, options) {
+      $def(self, '$static_regexp', function $$static_regexp(parts, options) {
         var self = this, source = nil;
 
         
         source = self.$static_string(parts);
         if ($truthy(source['$nil?']())) {
-          return nil};
-        source = (function() {
-        if ($truthy(options.$children()['$include?']("u"))) {return source.$encode($$$($$($nesting, 'Encoding'), 'UTF_8'))}
-        else if ($truthy(options.$children()['$include?']("e"))) {return source.$encode($$$($$($nesting, 'Encoding'), 'EUC_JP'))}
-        else if ($truthy(options.$children()['$include?']("s"))) {return source.$encode($$$($$($nesting, 'Encoding'), 'WINDOWS_31J'))}
-        else if ($truthy(options.$children()['$include?']("n"))) {return source.$encode($$$($$($nesting, 'Encoding'), 'BINARY'))}
-        else {return source}})();
-        return $$($nesting, 'Regexp').$new(source, (function() {if ($truthy(options.$children()['$include?']("x"))) {
-          return $$$($$($nesting, 'Regexp'), 'EXTENDED')
-        } else {
           return nil
-        }; return nil; })());
-      }, $Default_static_regexp$198.$$arity = 2);
+        };
+        source = ($truthy(options.$children()['$include?']("u")) ? (source.$encode($$$($$('Encoding'), 'UTF_8'))) : ($truthy(options.$children()['$include?']("e")) ? (source.$encode($$$($$('Encoding'), 'EUC_JP'))) : ($truthy(options.$children()['$include?']("s")) ? (source.$encode($$$($$('Encoding'), 'WINDOWS_31J'))) : ($truthy(options.$children()['$include?']("n")) ? (source.$encode($$$($$('Encoding'), 'BINARY'))) : (source)))));
+        return $$('Regexp').$new(source, ($truthy(options.$children()['$include?']("x")) ? ($$$($$('Regexp'), 'EXTENDED')) : nil));
+      }, 2);
       
-      Opal.def(self, '$static_regexp_node', $Default_static_regexp_node$199 = function $$static_regexp_node(node) {
+      $def(self, '$static_regexp_node', function $$static_regexp_node(node) {
         var $a, self = this, parts = nil, options = nil;
 
-        if (node.$type()['$==']("regexp")) {
+        if ($eqeq(node.$type(), "regexp")) {
           
           $a = [node.$children()['$[]']($range(0, -2, false)), node.$children()['$[]'](-1)], (parts = $a[0]), (options = $a[1]), $a;
           return self.$static_regexp(parts, options);
         } else {
           return nil
         }
-      }, $Default_static_regexp_node$199.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$collapse_string_parts?', $Default_collapse_string_parts$ques$200 = function(parts) {
-        var self = this, $ret_or_38 = nil;
+      $def(self, '$collapse_string_parts?', function $Default_collapse_string_parts$ques$19(parts) {
+        var $ret_or_1 = nil;
 
-        if ($truthy(($ret_or_38 = parts['$one?']()))) {
+        if ($truthy(($ret_or_1 = parts['$one?']()))) {
           return ["str", "dstr"]['$include?'](parts.$first().$type())
         } else {
-          return $ret_or_38
+          return $ret_or_1
         }
-      }, $Default_collapse_string_parts$ques$200.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$value', $Default_value$201 = function $$value(token) {
-        var self = this;
-
+      $def(self, '$value', function $$value(token) {
+        
         return token['$[]'](0)
-      }, $Default_value$201.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$string_value', $Default_string_value$202 = function $$string_value(token) {
+      $def(self, '$string_value', function $$string_value(token) {
         var self = this;
 
         
-        if ($truthy(token['$[]'](0)['$valid_encoding?']())) {
-        } else {
+        if (!$truthy(token['$[]'](0)['$valid_encoding?']())) {
           self.$diagnostic("error", "invalid_encoding", nil, token['$[]'](1))
         };
         return token['$[]'](0);
-      }, $Default_string_value$202.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$loc', $Default_loc$203 = function $$loc(token) {
-        var self = this, $ret_or_39 = nil;
-
-        if ($truthy((function() {if ($truthy(($ret_or_39 = token))) {
-          return token['$[]'](0)
-        } else {
-          return $ret_or_39
-        }; return nil; })())) {
+      $def(self, '$loc', function $$loc(token) {
+        
+        if (($truthy(token) && ($truthy(token['$[]'](0))))) {
           return token['$[]'](1)
         } else {
           return nil
         }
-      }, $Default_loc$203.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$diagnostic', $Default_diagnostic$204 = function $$diagnostic(type, reason, arguments$, location, highlights) {
+      $def(self, '$diagnostic', function $$diagnostic(type, reason, arguments$, location, highlights) {
         var self = this;
 
         
         
-        if (highlights == null) {
-          highlights = [];
-        };
-        self.parser.$diagnostics().$process($$($nesting, 'Diagnostic').$new(type, reason, arguments$, location, highlights));
-        if (type['$==']("error")) {
+        if (highlights == null) highlights = [];;
+        self.parser.$diagnostics().$process($$('Diagnostic').$new(type, reason, arguments$, location, highlights));
+        if ($eqeq(type, "error")) {
           return self.parser.$send("yyerror")
         } else {
           return nil
         };
-      }, $Default_diagnostic$204.$$arity = -5);
+      }, -5);
       
-      Opal.def(self, '$validate_definee', $Default_validate_definee$205 = function $$validate_definee(definee) {
-        var self = this, $case = nil;
+      $def(self, '$validate_definee', function $$validate_definee(definee) {
+        var self = this, $ret_or_1 = nil;
 
-        return (function() {$case = definee.$type();
-        if ("int"['$===']($case) || "str"['$===']($case) || "dstr"['$===']($case) || "sym"['$===']($case) || "dsym"['$===']($case) || "regexp"['$===']($case) || "array"['$===']($case) || "hash"['$===']($case)) {
-        self.$diagnostic("error", "singleton_literal", nil, definee.$loc().$expression());
-        return false;}
-        else {return true}})()
-      }, $Default_validate_definee$205.$$arity = 1);
+        if (($eqeqeq("int", ($ret_or_1 = definee.$type())) || (($eqeqeq("str", $ret_or_1) || (($eqeqeq("dstr", $ret_or_1) || (($eqeqeq("sym", $ret_or_1) || (($eqeqeq("dsym", $ret_or_1) || (($eqeqeq("regexp", $ret_or_1) || (($eqeqeq("array", $ret_or_1) || ($eqeqeq("hash", $ret_or_1)))))))))))))))) {
+          
+          self.$diagnostic("error", "singleton_literal", nil, definee.$loc().$expression());
+          return false;
+        } else {
+          return true
+        }
+      }, 1);
       
-      Opal.def(self, '$rewrite_hash_args_to_kwargs', $Default_rewrite_hash_args_to_kwargs$206 = function $$rewrite_hash_args_to_kwargs(args) {
-        var self = this, $ret_or_40 = nil, $writer = nil, $ret_or_41 = nil, $ret_or_42 = nil;
+      $def(self, '$rewrite_hash_args_to_kwargs', function $$rewrite_hash_args_to_kwargs(args) {
+        var self = this, $writer = nil;
 
-        if ($truthy((function() {if ($truthy(($ret_or_40 = args['$any?']()))) {
-          return self['$kwargs?'](args.$last())
-        } else {
-          return $ret_or_40
-        }; return nil; })())) {
+        if (($truthy(args['$any?']()) && ($truthy(self['$kwargs?'](args.$last()))))) {
           
           $writer = [$rb_minus(args.$length(), 1), args['$[]']($rb_minus(args.$length(), 1)).$updated("kwargs")];
-          $send(args, '[]=', Opal.to_a($writer));
+          $send(args, '[]=', $to_a($writer));
           return $writer[$rb_minus($writer["length"], 1)];
-        } else if ($truthy((function() {if ($truthy(($ret_or_41 = (function() {if ($truthy(($ret_or_42 = $rb_gt(args.$length(), 1)))) {
-          return args.$last().$type()['$==']("block_pass")
-        } else {
-          return $ret_or_42
-        }; return nil; })()))) {
-          return self['$kwargs?'](args['$[]']($rb_minus(args.$length(), 2)))
-        } else {
-          return $ret_or_41
-        }; return nil; })())) {
+        } else if ((($truthy($rb_gt(args.$length(), 1)) && ($eqeq(args.$last().$type(), "block_pass"))) && ($truthy(self['$kwargs?'](args['$[]']($rb_minus(args.$length(), 2))))))) {
           
           $writer = [$rb_minus(args.$length(), 2), args['$[]']($rb_minus(args.$length(), 2)).$updated("kwargs")];
-          $send(args, '[]=', Opal.to_a($writer));
+          $send(args, '[]=', $to_a($writer));
           return $writer[$rb_minus($writer["length"], 1)];
         } else {
           return nil
         }
-      }, $Default_rewrite_hash_args_to_kwargs$206.$$arity = 1);
-      return (Opal.def(self, '$kwargs?', $Default_kwargs$ques$207 = function(node) {
-        var self = this, $ret_or_43 = nil, $ret_or_44 = nil;
+      }, 1);
+      return $def(self, '$kwargs?', function $Default_kwargs$ques$20(node) {
+        var $ret_or_1 = nil, $ret_or_2 = nil;
 
-        if ($truthy(($ret_or_43 = (function() {if ($truthy(($ret_or_44 = node.$type()['$==']("hash")))) {
-          return node.$loc().$begin()['$nil?']()
-        } else {
-          return $ret_or_44
-        }; return nil; })()))) {
+        if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = node.$type()['$==']("hash"))) ? (node.$loc().$begin()['$nil?']()) : ($ret_or_2))))) {
           return node.$loc().$end()['$nil?']()
         } else {
-          return $ret_or_43
+          return $ret_or_1
         }
-      }, $Default_kwargs$ques$207.$$arity = 1), nil) && 'kwargs?';
-    })($$($nesting, 'Builders'), null, $nesting)
+      }, 1);
+    })($$('Builders'), null, $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/context"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy;
+Opal.modules["parser/context"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $const_set = Opal.const_set, $def = Opal.def, $send = Opal.send, $to_a = Opal.to_a, $truthy = Opal.truthy;
 
-  Opal.add_stubs(['$reset', '$attr_accessor', '$in_block', '$in_lambda']);
+  Opal.add_stubs('reset,attr_accessor,in_block,in_lambda');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -23108,18 +19971,18 @@ Opal.modules["parser/context"] = function(Opal) {
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Context');
 
-      var $nesting = [self].concat($parent_nesting), $Context_initialize$1, $Context_reset$2, $Context_in_dynamic_block$ques$3;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
-      Opal.const_set($nesting[0], 'FLAGS', ["in_defined", "in_kwarg", "in_argdef", "in_def", "in_class", "in_block", "in_lambda"]);
+      $const_set($nesting[0], 'FLAGS', ["in_defined", "in_kwarg", "in_argdef", "in_def", "in_class", "in_block", "in_lambda"]);
       
-      Opal.def(self, '$initialize', $Context_initialize$1 = function $$initialize() {
+      $def(self, '$initialize', function $$initialize() {
         var self = this;
 
         return self.$reset()
-      }, $Context_initialize$1.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$reset', $Context_reset$2 = function $$reset() {
+      $def(self, '$reset', function $$reset() {
         var self = this;
 
         
@@ -23130,9 +19993,9 @@ Opal.modules["parser/context"] = function(Opal) {
         self.in_class = false;
         self.in_block = false;
         return (self.in_lambda = false);
-      }, $Context_reset$2.$$arity = 0);
-      $send(self, 'attr_accessor', Opal.to_a($$($nesting, 'FLAGS')));
-      return (Opal.def(self, '$in_dynamic_block?', $Context_in_dynamic_block$ques$3 = function() {
+      }, 0);
+      $send(self, 'attr_accessor', $to_a($$('FLAGS')));
+      return $def(self, '$in_dynamic_block?', function $Context_in_dynamic_block$ques$1() {
         var self = this, $ret_or_1 = nil;
 
         if ($truthy(($ret_or_1 = self.$in_block()))) {
@@ -23140,22 +20003,15 @@ Opal.modules["parser/context"] = function(Opal) {
         } else {
           return self.$in_lambda()
         }
-      }, $Context_in_dynamic_block$ques$3.$$arity = 0), nil) && 'in_dynamic_block?';
+      }, 0);
     })($nesting[0], null, $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/max_numparam_stack"] = function(Opal) {
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $hash2 = Opal.hash2, $send = Opal.send;
-
-  Opal.add_stubs(['$attr_reader', '$==', '$size', '$set', '$top', '$>', '$max', '$[]', '$last', '$push', '$pop', '$private', '$[]=', '$-']);
+Opal.modules["parser/max_numparam_stack"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $const_set = Opal.const_set, $def = Opal.def, $truthy = Opal.truthy, $rb_gt = Opal.rb_gt, $hash2 = Opal.hash2, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus;
+
+  Opal.add_stubs('attr_reader,==,size,set,top,>,max,[],last,push,pop,private,[]=,-');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -23164,38 +20020,38 @@ Opal.modules["parser/max_numparam_stack"] = function(Opal) {
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'MaxNumparamStack');
 
-      var $nesting = [self].concat($parent_nesting), $MaxNumparamStack_initialize$1, $MaxNumparamStack_empty$ques$2, $MaxNumparamStack_has_ordinary_params$excl$3, $MaxNumparamStack_has_ordinary_params$ques$4, $MaxNumparamStack_has_numparams$ques$5, $MaxNumparamStack_register$6, $MaxNumparamStack_top$7, $MaxNumparamStack_push$8, $MaxNumparamStack_pop$9, $MaxNumparamStack_set$10;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.stack = nil;
+      $proto.stack = nil;
       
       self.$attr_reader("stack");
-      Opal.const_set($nesting[0], 'ORDINARY_PARAMS', -1);
+      $const_set($nesting[0], 'ORDINARY_PARAMS', -1);
       
-      Opal.def(self, '$initialize', $MaxNumparamStack_initialize$1 = function $$initialize() {
+      $def(self, '$initialize', function $$initialize() {
         var self = this;
 
         return (self.stack = [])
-      }, $MaxNumparamStack_initialize$1.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$empty?', $MaxNumparamStack_empty$ques$2 = function() {
+      $def(self, '$empty?', function $MaxNumparamStack_empty$ques$1() {
         var self = this;
 
         return self.stack.$size()['$=='](0)
-      }, $MaxNumparamStack_empty$ques$2.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$has_ordinary_params!', $MaxNumparamStack_has_ordinary_params$excl$3 = function() {
+      $def(self, '$has_ordinary_params!', function $MaxNumparamStack_has_ordinary_params$excl$2() {
         var self = this;
 
-        return self.$set($$($nesting, 'ORDINARY_PARAMS'))
-      }, $MaxNumparamStack_has_ordinary_params$excl$3.$$arity = 0);
+        return self.$set($$('ORDINARY_PARAMS'))
+      }, 0);
       
-      Opal.def(self, '$has_ordinary_params?', $MaxNumparamStack_has_ordinary_params$ques$4 = function() {
+      $def(self, '$has_ordinary_params?', function $MaxNumparamStack_has_ordinary_params$ques$3() {
         var self = this;
 
-        return self.$top()['$==']($$($nesting, 'ORDINARY_PARAMS'))
-      }, $MaxNumparamStack_has_ordinary_params$ques$4.$$arity = 0);
+        return self.$top()['$==']($$('ORDINARY_PARAMS'))
+      }, 0);
       
-      Opal.def(self, '$has_numparams?', $MaxNumparamStack_has_numparams$ques$5 = function() {
+      $def(self, '$has_numparams?', function $MaxNumparamStack_has_numparams$ques$4() {
         var self = this, $ret_or_1 = nil;
 
         if ($truthy(($ret_or_1 = self.$top()))) {
@@ -23203,21 +20059,21 @@ Opal.modules["parser/max_numparam_stack"] = function(Opal) {
         } else {
           return $ret_or_1
         }
-      }, $MaxNumparamStack_has_numparams$ques$5.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$register', $MaxNumparamStack_register$6 = function $$register(numparam) {
+      $def(self, '$register', function $$register(numparam) {
         var self = this;
 
         return self.$set([self.$top(), numparam].$max())
-      }, $MaxNumparamStack_register$6.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$top', $MaxNumparamStack_top$7 = function $$top() {
+      $def(self, '$top', function $$top() {
         var self = this;
 
         return self.stack.$last()['$[]']("value")
-      }, $MaxNumparamStack_top$7.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$push', $MaxNumparamStack_push$8 = function $$push($kwargs) {
+      $def(self, '$push', function $$push($kwargs) {
         var static$, self = this;
 
         
@@ -23233,102 +20089,97 @@ Opal.modules["parser/max_numparam_stack"] = function(Opal) {
         }
         static$ = $kwargs.$$smap["static"];;
         return self.stack.$push($hash2(["value", "static"], {"value": 0, "static": static$}));
-      }, $MaxNumparamStack_push$8.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$pop', $MaxNumparamStack_pop$9 = function $$pop() {
+      $def(self, '$pop', function $$pop() {
         var self = this;
 
         return self.stack.$pop()['$[]']("value")
-      }, $MaxNumparamStack_pop$9.$$arity = 0);
+      }, 0);
       self.$private();
-      return (Opal.def(self, '$set', $MaxNumparamStack_set$10 = function $$set(value) {
+      return $def(self, '$set', function $$set(value) {
         var self = this, $writer = nil;
 
         
         $writer = ["value", value];
-        $send(self.stack.$last(), '[]=', Opal.to_a($writer));
+        $send(self.stack.$last(), '[]=', $to_a($writer));
         return $writer[$rb_minus($writer["length"], 1)];
-      }, $MaxNumparamStack_set$10.$$arity = 1), nil) && 'set';
+      }, 1);
     })($nesting[0], null, $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/current_arg_stack"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send;
+Opal.modules["parser/current_arg_stack"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $def = Opal.def, $rb_minus = Opal.rb_minus, $send = Opal.send, $to_a = Opal.to_a;
 
-  Opal.add_stubs(['$attr_reader', '$freeze', '$==', '$size', '$<<', '$-', '$length', '$[]=', '$pop', '$clear', '$last']);
+  Opal.add_stubs('attr_reader,freeze,==,size,<<,-,length,[]=,pop,clear,last');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
     var $nesting = [self].concat($parent_nesting);
 
-    return (function($base, $super, $parent_nesting) {
+    return (function($base, $super) {
       var self = $klass($base, $super, 'CurrentArgStack');
 
-      var $nesting = [self].concat($parent_nesting), $CurrentArgStack_initialize$1, $CurrentArgStack_empty$ques$2, $CurrentArgStack_push$3, $CurrentArgStack_set$4, $CurrentArgStack_pop$5, $CurrentArgStack_reset$6, $CurrentArgStack_top$7;
+      var $proto = self.$$prototype;
 
-      self.$$prototype.stack = nil;
+      $proto.stack = nil;
       
       self.$attr_reader("stack");
       
-      Opal.def(self, '$initialize', $CurrentArgStack_initialize$1 = function $$initialize() {
+      $def(self, '$initialize', function $$initialize() {
         var self = this;
 
         
         self.stack = [];
         return self.$freeze();
-      }, $CurrentArgStack_initialize$1.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$empty?', $CurrentArgStack_empty$ques$2 = function() {
+      $def(self, '$empty?', function $CurrentArgStack_empty$ques$1() {
         var self = this;
 
         return self.stack.$size()['$=='](0)
-      }, $CurrentArgStack_empty$ques$2.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$push', $CurrentArgStack_push$3 = function $$push(value) {
+      $def(self, '$push', function $$push(value) {
         var self = this;
 
         return self.stack['$<<'](value)
-      }, $CurrentArgStack_push$3.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$set', $CurrentArgStack_set$4 = function $$set(value) {
+      $def(self, '$set', function $$set(value) {
         var self = this, $writer = nil;
 
         
         $writer = [$rb_minus(self.stack.$length(), 1), value];
-        $send(self.stack, '[]=', Opal.to_a($writer));
+        $send(self.stack, '[]=', $to_a($writer));
         return $writer[$rb_minus($writer["length"], 1)];
-      }, $CurrentArgStack_set$4.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$pop', $CurrentArgStack_pop$5 = function $$pop() {
+      $def(self, '$pop', function $$pop() {
         var self = this;
 
         return self.stack.$pop()
-      }, $CurrentArgStack_pop$5.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$reset', $CurrentArgStack_reset$6 = function $$reset() {
+      $def(self, '$reset', function $$reset() {
         var self = this;
 
         return self.stack.$clear()
-      }, $CurrentArgStack_reset$6.$$arity = 0);
-      return (Opal.def(self, '$top', $CurrentArgStack_top$7 = function $$top() {
+      }, 0);
+      return $def(self, '$top', function $$top() {
         var self = this;
 
         return self.stack.$last()
-      }, $CurrentArgStack_top$7.$$arity = 0), nil) && 'top';
-    })($nesting[0], null, $nesting)
+      }, 0);
+    })($nesting[0], null)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/variables_stack"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass;
+Opal.modules["parser/variables_stack"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $def = Opal.def;
 
-  Opal.add_stubs(['$push', '$empty?', '$<<', '$new', '$pop', '$clear', '$last', '$to_sym', '$include?']);
+  Opal.add_stubs('push,empty?,<<,new,pop,clear,last,to_sym,include?');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -23337,165 +20188,150 @@ Opal.modules["parser/variables_stack"] = function(Opal) {
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'VariablesStack');
 
-      var $nesting = [self].concat($parent_nesting), $VariablesStack_initialize$1, $VariablesStack_empty$ques$2, $VariablesStack_push$3, $VariablesStack_pop$4, $VariablesStack_reset$5, $VariablesStack_declare$6, $VariablesStack_declared$ques$7;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.stack = nil;
+      $proto.stack = nil;
       
       
-      Opal.def(self, '$initialize', $VariablesStack_initialize$1 = function $$initialize() {
+      $def(self, '$initialize', function $$initialize() {
         var self = this;
 
         
         self.stack = [];
         return self.$push();
-      }, $VariablesStack_initialize$1.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$empty?', $VariablesStack_empty$ques$2 = function() {
+      $def(self, '$empty?', function $VariablesStack_empty$ques$1() {
         var self = this;
 
         return self.stack['$empty?']()
-      }, $VariablesStack_empty$ques$2.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$push', $VariablesStack_push$3 = function $$push() {
+      $def(self, '$push', function $$push() {
         var self = this;
 
-        return self.stack['$<<']($$($nesting, 'Set').$new())
-      }, $VariablesStack_push$3.$$arity = 0);
+        return self.stack['$<<']($$('Set').$new())
+      }, 0);
       
-      Opal.def(self, '$pop', $VariablesStack_pop$4 = function $$pop() {
+      $def(self, '$pop', function $$pop() {
         var self = this;
 
         return self.stack.$pop()
-      }, $VariablesStack_pop$4.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$reset', $VariablesStack_reset$5 = function $$reset() {
+      $def(self, '$reset', function $$reset() {
         var self = this;
 
         return self.stack.$clear()
-      }, $VariablesStack_reset$5.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$declare', $VariablesStack_declare$6 = function $$declare(name) {
+      $def(self, '$declare', function $$declare(name) {
         var self = this;
 
         return self.stack.$last()['$<<'](name.$to_sym())
-      }, $VariablesStack_declare$6.$$arity = 1);
-      return (Opal.def(self, '$declared?', $VariablesStack_declared$ques$7 = function(name) {
+      }, 1);
+      return $def(self, '$declared?', function $VariablesStack_declared$ques$2(name) {
         var self = this;
 
         return self.stack.$last()['$include?'](name.$to_sym())
-      }, $VariablesStack_declared$ques$7.$$arity = 1), nil) && 'declared?';
+      }, 1);
     })($nesting[0], null, $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/base"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $gvars = Opal.gvars, $truthy = Opal.truthy, $hash2 = Opal.hash2;
+Opal.modules["parser/base"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $defs = Opal.defs, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $gvars = Opal.gvars, $eqeq = Opal.eqeq, $truthy = Opal.truthy, $def = Opal.def, $not = Opal.not, $eqeqeq = Opal.eqeqeq, $to_ary = Opal.to_ary, $hash2 = Opal.hash2;
 
-  Opal.add_stubs(['$default_parser', '$setup_source_buffer', '$default_encoding', '$parse', '$parse_with_comments', '$read', '$new', '$all_errors_are_fatal=', '$diagnostics', '$-', '$ignore_warnings=', '$lambda', '$puts', '$render', '$consumer=', '$force_encoding', '$dup', '$==', '$name', '$raw_source=', '$source=', '$private_class_method', '$attr_reader', '$version', '$diagnostics=', '$static_env=', '$context=', '$parser=', '$class', '$[]', '$reset', '$source_buffer=', '$do_parse', '$comments=', '$comments', '$tokens=', '$!', '$raise', '$tokens', '$private', '$advance', '$===', '$diagnostic', '$map', '$process', '$yyerror', '$token_to_str']);
+  Opal.add_stubs('default_parser,setup_source_buffer,default_encoding,parse,parse_with_comments,read,new,all_errors_are_fatal=,diagnostics,-,ignore_warnings=,lambda,puts,render,consumer=,force_encoding,dup,==,name,raw_source=,source=,private_class_method,attr_reader,version,diagnostics=,static_env=,context=,parser=,[],class,reset,source_buffer=,do_parse,comments=,comments,tokens=,!,raise,tokens,private,advance,===,diagnostic,map,process,yyerror,token_to_str');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
-    var $nesting = [self].concat($parent_nesting);
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Base');
 
-      var $nesting = [self].concat($parent_nesting), $Base_parse$1, $Base_parse_with_comments$2, $Base_parse_file$3, $Base_parse_file_with_comments$4, $Base_default_parser$5, $Base_setup_source_buffer$7, $Base_initialize$8, $Base_reset$9, $Base_parse$10, $Base_parse_with_comments$11, $Base_tokenize$12, $Base_next_token$13, $Base_check_kwarg_name$14, $Base_diagnostic$15, $Base_on_error$17;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.diagnostics = self.$$prototype.lexer = self.$$prototype.static_env = self.$$prototype.context = self.$$prototype.builder = self.$$prototype.current_arg_stack = self.$$prototype.pattern_variables = self.$$prototype.pattern_hash_keys = nil;
+      $proto.diagnostics = $proto.lexer = $proto.static_env = $proto.context = $proto.builder = $proto.current_arg_stack = $proto.pattern_variables = $proto.pattern_hash_keys = nil;
       
-      Opal.defs(self, '$parse', $Base_parse$1 = function $$parse(string, file, line) {
+      $defs(self, '$parse', function $$parse(string, file, line) {
         var self = this, parser = nil, source_buffer = nil;
 
         
         
-        if (file == null) {
-          file = "(string)";
-        };
+        if (file == null) file = "(string)";;
         
-        if (line == null) {
-          line = 1;
-        };
+        if (line == null) line = 1;;
         parser = self.$default_parser();
         source_buffer = self.$setup_source_buffer(file, line, string, parser.$default_encoding());
         return parser.$parse(source_buffer);
-      }, $Base_parse$1.$$arity = -2);
-      Opal.defs(self, '$parse_with_comments', $Base_parse_with_comments$2 = function $$parse_with_comments(string, file, line) {
+      }, -2);
+      $defs(self, '$parse_with_comments', function $$parse_with_comments(string, file, line) {
         var self = this, parser = nil, source_buffer = nil;
 
         
         
-        if (file == null) {
-          file = "(string)";
-        };
+        if (file == null) file = "(string)";;
         
-        if (line == null) {
-          line = 1;
-        };
+        if (line == null) line = 1;;
         parser = self.$default_parser();
         source_buffer = self.$setup_source_buffer(file, line, string, parser.$default_encoding());
         return parser.$parse_with_comments(source_buffer);
-      }, $Base_parse_with_comments$2.$$arity = -2);
-      Opal.defs(self, '$parse_file', $Base_parse_file$3 = function $$parse_file(filename) {
+      }, -2);
+      $defs(self, '$parse_file', function $$parse_file(filename) {
         var self = this;
 
-        return self.$parse($$($nesting, 'File').$read(filename), filename)
-      }, $Base_parse_file$3.$$arity = 1);
-      Opal.defs(self, '$parse_file_with_comments', $Base_parse_file_with_comments$4 = function $$parse_file_with_comments(filename) {
+        return self.$parse($$('File').$read(filename), filename)
+      }, 1);
+      $defs(self, '$parse_file_with_comments', function $$parse_file_with_comments(filename) {
         var self = this;
 
-        return self.$parse_with_comments($$($nesting, 'File').$read(filename), filename)
-      }, $Base_parse_file_with_comments$4.$$arity = 1);
-      Opal.defs(self, '$default_parser', $Base_default_parser$5 = function $$default_parser() {
-        var $$6, self = this, parser = nil, $writer = nil;
+        return self.$parse_with_comments($$('File').$read(filename), filename)
+      }, 1);
+      $defs(self, '$default_parser', function $$default_parser() {
+        var self = this, parser = nil, $writer = nil;
 
         
         parser = self.$new();
         
         $writer = [true];
-        $send(parser.$diagnostics(), 'all_errors_are_fatal=', Opal.to_a($writer));
+        $send(parser.$diagnostics(), 'all_errors_are_fatal=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         
         $writer = [true];
-        $send(parser.$diagnostics(), 'ignore_warnings=', Opal.to_a($writer));
+        $send(parser.$diagnostics(), 'ignore_warnings=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         
-        $writer = [$send(self, 'lambda', [], ($$6 = function(diagnostic){var self = $$6.$$s == null ? this : $$6.$$s;
-          if ($gvars.stderr == null) $gvars.stderr = nil;
+        $writer = [$send(self, 'lambda', [], function $$1(diagnostic){          if ($gvars.stderr == null) $gvars.stderr = nil;
 
           
           
-          if (diagnostic == null) {
-            diagnostic = nil;
-          };
-          return $gvars.stderr.$puts(diagnostic.$render());}, $$6.$$s = self, $$6.$$arity = 1, $$6))];
-        $send(parser.$diagnostics(), 'consumer=', Opal.to_a($writer));
+          if (diagnostic == null) diagnostic = nil;;
+          return $gvars.stderr.$puts(diagnostic.$render());}, 1)];
+        $send(parser.$diagnostics(), 'consumer=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return parser;
-      }, $Base_default_parser$5.$$arity = 0);
-      Opal.defs(self, '$setup_source_buffer', $Base_setup_source_buffer$7 = function $$setup_source_buffer(file, line, string, encoding) {
+      }, 0);
+      $defs(self, '$setup_source_buffer', function $$setup_source_buffer(file, line, string, encoding) {
         var self = this, source_buffer = nil, $writer = nil;
 
         
         string = string.$dup().$force_encoding(encoding);
-        source_buffer = $$$($$($nesting, 'Source'), 'Buffer').$new(file, line);
-        if (self.$name()['$==']("Parser::Ruby18")) {
+        source_buffer = $$$($$('Source'), 'Buffer').$new(file, line);
+        if ($eqeq(self.$name(), "Parser::Ruby18")) {
           
           $writer = [string];
-          $send(source_buffer, 'raw_source=', Opal.to_a($writer));
+          $send(source_buffer, 'raw_source=', $to_a($writer));
           $writer[$rb_minus($writer["length"], 1)];
         } else {
           
           $writer = [string];
-          $send(source_buffer, 'source=', Opal.to_a($writer));
+          $send(source_buffer, 'source=', $to_a($writer));
           $writer[$rb_minus($writer["length"], 1)];
         };
         return source_buffer;
-      }, $Base_setup_source_buffer$7.$$arity = 4);
+      }, 4);
       self.$private_class_method("setup_source_buffer");
       self.$attr_reader("lexer");
       self.$attr_reader("diagnostics");
@@ -23508,50 +20344,45 @@ Opal.modules["parser/base"] = function(Opal) {
       self.$attr_reader("pattern_variables");
       self.$attr_reader("pattern_hash_keys");
       
-      Opal.def(self, '$initialize', $Base_initialize$8 = function $$initialize(builder) {
-        var self = this, $writer = nil, $ret_or_1 = nil;
+      $def(self, '$initialize', function $$initialize(builder) {
+        var self = this, $writer = nil;
 
         
         
-        if (builder == null) {
-          builder = $$$($$$($$($nesting, 'Parser'), 'Builders'), 'Default').$new();
-        };
-        self.diagnostics = $$$($$($nesting, 'Diagnostic'), 'Engine').$new();
-        self.static_env = $$($nesting, 'StaticEnvironment').$new();
-        self.context = $$($nesting, 'Context').$new();
-        self.max_numparam_stack = $$($nesting, 'MaxNumparamStack').$new();
-        self.current_arg_stack = $$($nesting, 'CurrentArgStack').$new();
-        self.pattern_variables = $$($nesting, 'VariablesStack').$new();
-        self.pattern_hash_keys = $$($nesting, 'VariablesStack').$new();
-        self.lexer = $$($nesting, 'Lexer').$new(self.$version());
+        if (builder == null) builder = $$$($$$($$('Parser'), 'Builders'), 'Default').$new();;
+        self.diagnostics = $$$($$('Diagnostic'), 'Engine').$new();
+        self.static_env = $$('StaticEnvironment').$new();
+        self.context = $$('Context').$new();
+        self.max_numparam_stack = $$('MaxNumparamStack').$new();
+        self.current_arg_stack = $$('CurrentArgStack').$new();
+        self.pattern_variables = $$('VariablesStack').$new();
+        self.pattern_hash_keys = $$('VariablesStack').$new();
+        self.lexer = $$('Lexer').$new(self.$version());
         
         $writer = [self.diagnostics];
-        $send(self.lexer, 'diagnostics=', Opal.to_a($writer));
+        $send(self.lexer, 'diagnostics=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         
         $writer = [self.static_env];
-        $send(self.lexer, 'static_env=', Opal.to_a($writer));
+        $send(self.lexer, 'static_env=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         
         $writer = [self.context];
-        $send(self.lexer, 'context=', Opal.to_a($writer));
+        $send(self.lexer, 'context=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         self.builder = builder;
         
         $writer = [self];
-        $send(self.builder, 'parser=', Opal.to_a($writer));
+        $send(self.builder, 'parser=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         self.last_token = nil;
-        if ($truthy((function() {if ($truthy(($ret_or_1 = $$$(self.$class(), 'Racc_debug_parser')))) {
-          return $$($nesting, 'ENV')['$[]']("RACC_DEBUG")
-        } else {
-          return $ret_or_1
-        }; return nil; })())) {
-          self.yydebug = true};
+        if (($truthy($$$(self.$class(), 'Racc_debug_parser')) && ($truthy($$('ENV')['$[]']("RACC_DEBUG"))))) {
+          self.yydebug = true
+        };
         return self.$reset();
-      }, $Base_initialize$8.$$arity = -1);
+      }, -1);
       
-      Opal.def(self, '$reset', $Base_reset$9 = function $$reset() {
+      $def(self, '$reset', function $$reset() {
         var self = this;
 
         
@@ -23563,243 +20394,232 @@ Opal.modules["parser/base"] = function(Opal) {
         self.pattern_variables.$reset();
         self.pattern_hash_keys.$reset();
         return self;
-      }, $Base_reset$9.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$parse', $Base_parse$10 = function $$parse(source_buffer) {
-        var self = this, $writer = nil, $ret_or_2 = nil;
+      $def(self, '$parse', function $$parse(source_buffer) {
+        var self = this, $writer = nil, $ret_or_1 = nil;
 
         return (function() { try {
         
         
         $writer = [source_buffer];
-        $send(self.lexer, 'source_buffer=', Opal.to_a($writer));
+        $send(self.lexer, 'source_buffer=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         self.source_buffer = source_buffer;
-        if ($truthy(($ret_or_2 = self.$do_parse()))) {
-          return $ret_or_2
+        if ($truthy(($ret_or_1 = self.$do_parse()))) {
+          return $ret_or_1
         } else {
           return nil
         };
         } finally {
-          ((self.source_buffer = nil), (($writer = [nil]), $send(self.lexer, 'source_buffer=', Opal.to_a($writer)), $writer[$rb_minus($writer["length"], 1)]))
+          ((self.source_buffer = nil), (($writer = [nil]), $send(self.lexer, 'source_buffer=', $to_a($writer)), $writer[$rb_minus($writer["length"], 1)]))
         }; })()
-      }, $Base_parse$10.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$parse_with_comments', $Base_parse_with_comments$11 = function $$parse_with_comments(source_buffer) {
+      $def(self, '$parse_with_comments', function $$parse_with_comments(source_buffer) {
         var self = this, $writer = nil;
 
         return (function() { try {
         
         
         $writer = [[]];
-        $send(self.lexer, 'comments=', Opal.to_a($writer));
+        $send(self.lexer, 'comments=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return [self.$parse(source_buffer), self.lexer.$comments()];
         } finally {
-          (($writer = [nil]), $send(self.lexer, 'comments=', Opal.to_a($writer)), $writer[$rb_minus($writer["length"], 1)])
+          (($writer = [nil]), $send(self.lexer, 'comments=', $to_a($writer)), $writer[$rb_minus($writer["length"], 1)])
         }; })()
-      }, $Base_parse_with_comments$11.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$tokenize', $Base_tokenize$12 = function $$tokenize(source_buffer, recover) {
+      $def(self, '$tokenize', function $$tokenize(source_buffer, recover) {
         var self = this, $writer = nil, ast = nil;
 
         
         
-        if (recover == null) {
-          recover = false;
-        };
+        if (recover == null) recover = false;;
         return (function() { try {
         
         
         $writer = [[]];
-        $send(self.lexer, 'tokens=', Opal.to_a($writer));
+        $send(self.lexer, 'tokens=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         
         $writer = [[]];
-        $send(self.lexer, 'comments=', Opal.to_a($writer));
+        $send(self.lexer, 'comments=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         
         try {
           ast = self.$parse(source_buffer)
         } catch ($err) {
-          if (Opal.rescue($err, [$$$($$($nesting, 'Parser'), 'SyntaxError')])) {
+          if (Opal.rescue($err, [$$$($$('Parser'), 'SyntaxError')])) {
             try {
-              if ($truthy(recover['$!']())) {
-                self.$raise()}
+              if ($not(recover)) {
+                self.$raise()
+              }
             } finally { Opal.pop_exception(); }
           } else { throw $err; }
         };;
         return [ast, self.lexer.$comments(), self.lexer.$tokens()];
         } finally {
-          ((($writer = [nil]), $send(self.lexer, 'tokens=', Opal.to_a($writer)), $writer[$rb_minus($writer["length"], 1)]), (($writer = [nil]), $send(self.lexer, 'comments=', Opal.to_a($writer)), $writer[$rb_minus($writer["length"], 1)]))
+          ((($writer = [nil]), $send(self.lexer, 'tokens=', $to_a($writer)), $writer[$rb_minus($writer["length"], 1)]), (($writer = [nil]), $send(self.lexer, 'comments=', $to_a($writer)), $writer[$rb_minus($writer["length"], 1)]))
         }; })();
-      }, $Base_tokenize$12.$$arity = -2);
+      }, -2);
       self.$private();
       
-      Opal.def(self, '$next_token', $Base_next_token$13 = function $$next_token() {
+      $def(self, '$next_token', function $$next_token() {
         var self = this, token = nil;
 
         
         token = self.lexer.$advance();
         self.last_token = token;
         return token;
-      }, $Base_next_token$13.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$check_kwarg_name', $Base_check_kwarg_name$14 = function $$check_kwarg_name(name_t) {
-        var self = this, $case = nil;
+      $def(self, '$check_kwarg_name', function $$check_kwarg_name(name_t) {
+        var self = this, $ret_or_1 = nil;
 
-        return (function() {$case = name_t['$[]'](0);
-        if (/^[a-z_]/['$===']($case)) {return nil}
-        else if (/^[A-Z]/['$===']($case)) {return self.$diagnostic("error", "argument_const", nil, name_t)}
-        else { return nil }})()
-      }, $Base_check_kwarg_name$14.$$arity = 1);
+        if ($eqeqeq(/^[a-z_]/, ($ret_or_1 = name_t['$[]'](0)))) {
+          return nil
+        } else if ($eqeqeq(/^[A-Z]/, $ret_or_1)) {
+          return self.$diagnostic("error", "argument_const", nil, name_t)
+        } else {
+          return nil
+        }
+      }, 1);
       
-      Opal.def(self, '$diagnostic', $Base_diagnostic$15 = function $$diagnostic(level, reason, arguments$, location_t, highlights_ts) {
-        var $a, $b, $$16, self = this, _ = nil, location = nil, highlights = nil;
+      $def(self, '$diagnostic', function $$diagnostic(level, reason, arguments$, location_t, highlights_ts) {
+        var $a, $b, self = this, _ = nil, location = nil, highlights = nil;
 
         
         
-        if (highlights_ts == null) {
-          highlights_ts = [];
-        };
-        $b = location_t, $a = Opal.to_ary($b), (_ = ($a[0] == null ? nil : $a[0])), (location = ($a[1] == null ? nil : $a[1])), $b;
-        highlights = $send(highlights_ts, 'map', [], ($$16 = function(token){var self = $$16.$$s == null ? this : $$16.$$s, $c, $d, range = nil;
+        if (highlights_ts == null) highlights_ts = [];;
+        $b = location_t, $a = $to_ary($b), (_ = ($a[0] == null ? nil : $a[0])), (location = ($a[1] == null ? nil : $a[1])), $b;
+        highlights = $send(highlights_ts, 'map', [], function $$2(token){var $c, $d, range = nil;
 
           
           
-          if (token == null) {
-            token = nil;
-          };
-          $d = token, $c = Opal.to_ary($d), (_ = ($c[0] == null ? nil : $c[0])), (range = ($c[1] == null ? nil : $c[1])), $d;
-          return range;}, $$16.$$s = self, $$16.$$arity = 1, $$16));
-        self.diagnostics.$process($$($nesting, 'Diagnostic').$new(level, reason, arguments$, location, highlights));
-        if (level['$==']("error")) {
+          if (token == null) token = nil;;
+          $d = token, $c = $to_ary($d), (_ = ($c[0] == null ? nil : $c[0])), (range = ($c[1] == null ? nil : $c[1])), $d;
+          return range;}, 1);
+        self.diagnostics.$process($$('Diagnostic').$new(level, reason, arguments$, location, highlights));
+        if ($eqeq(level, "error")) {
           return self.$yyerror()
         } else {
           return nil
         };
-      }, $Base_diagnostic$15.$$arity = -5);
-      return (Opal.def(self, '$on_error', $Base_on_error$17 = function $$on_error(error_token_id, error_value, value_stack) {
+      }, -5);
+      return $def(self, '$on_error', function $$on_error(error_token_id, error_value, value_stack) {
         var $a, $b, self = this, token_name = nil, _ = nil, location = nil;
 
         
         token_name = self.$token_to_str(error_token_id);
-        $b = error_value, $a = Opal.to_ary($b), (_ = ($a[0] == null ? nil : $a[0])), (location = ($a[1] == null ? nil : $a[1])), $b;
-        return self.diagnostics.$process($$($nesting, 'Diagnostic').$new("error", "unexpected_token", $hash2(["token"], {"token": token_name}), location));
-      }, $Base_on_error$17.$$arity = 3), nil) && 'on_error';
-    })($nesting[0], $$$($$($nesting, 'Racc'), 'Parser'), $nesting)
+        $b = error_value, $a = $to_ary($b), (_ = ($a[0] == null ? nil : $a[0])), (location = ($a[1] == null ? nil : $a[1])), $b;
+        return self.diagnostics.$process($$('Diagnostic').$new("error", "unexpected_token", $hash2(["token"], {"token": token_name}), location));
+      }, 3);
+    })($nesting[0], $$$($$('Racc'), 'Parser'), $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/rewriter"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["parser/rewriter"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $def = Opal.def, $const_set = Opal.const_set, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $send2 = Opal.send2, $find_super = Opal.find_super;
 
-  Opal.add_stubs(['$new', '$process', '$include?', '$type', '$remove', '$wrap', '$insert_before', '$insert_after', '$replace', '$freeze', '$join', '$extend', '$warn_of_deprecation', '$class', '$warned_of_deprecation=', '$-']);
+  Opal.add_stubs('new,process,include?,type,remove,wrap,insert_before,insert_after,replace,freeze,join,extend,warn_of_deprecation,class,warned_of_deprecation=,-');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
-    var $nesting = [self].concat($parent_nesting);
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Rewriter');
 
-      var $nesting = [self].concat($parent_nesting), $Rewriter_rewrite$1, $Rewriter_assignment$ques$2, $Rewriter_remove$3, $Rewriter_wrap$4, $Rewriter_insert_before$5, $Rewriter_insert_after$6, $Rewriter_replace$7, $Rewriter_initialize$8;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.source_rewriter = nil;
+      $proto.source_rewriter = nil;
       
       
-      Opal.def(self, '$rewrite', $Rewriter_rewrite$1 = function $$rewrite(source_buffer, ast) {
+      $def(self, '$rewrite', function $$rewrite(source_buffer, ast) {
         var self = this;
 
         
-        self.source_rewriter = $$$($$($nesting, 'Source'), 'Rewriter').$new(source_buffer);
+        self.source_rewriter = $$$($$('Source'), 'Rewriter').$new(source_buffer);
         self.$process(ast);
         return self.source_rewriter.$process();
-      }, $Rewriter_rewrite$1.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$assignment?', $Rewriter_assignment$ques$2 = function(node) {
-        var self = this;
-
+      $def(self, '$assignment?', function $Rewriter_assignment$ques$1(node) {
+        
         return ["lvasgn", "ivasgn", "gvasgn", "cvasgn", "casgn"]['$include?'](node.$type())
-      }, $Rewriter_assignment$ques$2.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$remove', $Rewriter_remove$3 = function $$remove(range) {
+      $def(self, '$remove', function $$remove(range) {
         var self = this;
 
         return self.source_rewriter.$remove(range)
-      }, $Rewriter_remove$3.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$wrap', $Rewriter_wrap$4 = function $$wrap(range, before, after) {
+      $def(self, '$wrap', function $$wrap(range, before, after) {
         var self = this;
 
         return self.source_rewriter.$wrap(range, before, after)
-      }, $Rewriter_wrap$4.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$insert_before', $Rewriter_insert_before$5 = function $$insert_before(range, content) {
+      $def(self, '$insert_before', function $$insert_before(range, content) {
         var self = this;
 
         return self.source_rewriter.$insert_before(range, content)
-      }, $Rewriter_insert_before$5.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$insert_after', $Rewriter_insert_after$6 = function $$insert_after(range, content) {
+      $def(self, '$insert_after', function $$insert_after(range, content) {
         var self = this;
 
         return self.source_rewriter.$insert_after(range, content)
-      }, $Rewriter_insert_after$6.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$replace', $Rewriter_replace$7 = function $$replace(range, content) {
+      $def(self, '$replace', function $$replace(range, content) {
         var self = this;
 
         return self.source_rewriter.$replace(range, content)
-      }, $Rewriter_replace$7.$$arity = 2);
-      Opal.const_set($nesting[0], 'DEPRECATION_WARNING', ["Parser::Rewriter is deprecated.", "Please update your code to use Parser::TreeRewriter instead"].$join("\n").$freeze());
-      self.$extend($$($nesting, 'Deprecation'));
-      return (Opal.def(self, '$initialize', $Rewriter_initialize$8 = function $$initialize($a) {
-        var $post_args, $iter = $Rewriter_initialize$8.$$p, $yield = $iter || nil, self = this, $writer = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
-
-        if ($iter) $Rewriter_initialize$8.$$p = null;
-        // Prepare super implicit arguments
-        for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-          $zuper[$zuper_i] = arguments[$zuper_i];
-        }
+      }, 2);
+      $const_set($nesting[0], 'DEPRECATION_WARNING', ["Parser::Rewriter is deprecated.", "Please update your code to use Parser::TreeRewriter instead"].$join("\n").$freeze());
+      self.$extend($$('Deprecation'));
+      return $def(self, '$initialize', function $$initialize($a) {
+        var $post_args, $rest_arg, $yield = $$initialize.$$p || nil, self = this, $writer = nil;
+
+        delete $$initialize.$$p;
         
         
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
-        ;
+        $post_args = Opal.slice.call(arguments);
+        
+        $rest_arg = $post_args;;
         self.$class().$warn_of_deprecation();
         
         $writer = [true];
-        $send($$$($$($nesting, 'Source'), 'Rewriter'), 'warned_of_deprecation=', Opal.to_a($writer));
+        $send($$$($$('Source'), 'Rewriter'), 'warned_of_deprecation=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
-        return $send2(self, $find_super(self, 'initialize', $Rewriter_initialize$8, false, true), 'initialize', $zuper, $iter);
-      }, $Rewriter_initialize$8.$$arity = -1), nil) && 'initialize';
-    })($nesting[0], $$$($$$($$($nesting, 'Parser'), 'AST'), 'Processor'), $nesting)
+        return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', $to_a($rest_arg), $yield);
+      }, -1);
+    })($nesting[0], $$$($$$($$('Parser'), 'AST'), 'Processor'), $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/tree_rewriter"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $hash2 = Opal.hash2, $hash = Opal.hash;
+Opal.modules["parser/tree_rewriter"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $hash2 = Opal.hash2, $hash = Opal.hash, $def = Opal.def;
 
-  Opal.add_stubs(['$new', '$process', '$include?', '$type', '$remove', '$wrap', '$insert_before', '$insert_after', '$replace']);
+  Opal.add_stubs('new,process,include?,type,remove,wrap,insert_before,insert_after,replace');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
-    var $nesting = [self].concat($parent_nesting);
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'TreeRewriter');
 
-      var $nesting = [self].concat($parent_nesting), $TreeRewriter_rewrite$1, $TreeRewriter_assignment$ques$2, $TreeRewriter_remove$3, $TreeRewriter_wrap$4, $TreeRewriter_insert_before$5, $TreeRewriter_insert_after$6, $TreeRewriter_replace$7;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.source_rewriter = nil;
+      $proto.source_rewriter = nil;
       
       
-      Opal.def(self, '$rewrite', $TreeRewriter_rewrite$1 = function $$rewrite(source_buffer, ast, $kwargs) {
+      $def(self, '$rewrite', function $$rewrite(source_buffer, ast, $kwargs) {
         var policy, self = this;
 
         
@@ -23811,59 +20631,58 @@ Opal.modules["parser/tree_rewriter"] = function(Opal) {
         };
         
         policy = Opal.kwrestargs($kwargs, {});;
-        self.source_rewriter = $$$($$$($$($nesting, 'Parser'), 'Source'), 'TreeRewriter').$new(source_buffer, Opal.to_hash(policy));
+        self.source_rewriter = $$$($$$($$('Parser'), 'Source'), 'TreeRewriter').$new(source_buffer, Opal.to_hash(policy));
         self.$process(ast);
         return self.source_rewriter.$process();
-      }, $TreeRewriter_rewrite$1.$$arity = -3);
+      }, -3);
       
-      Opal.def(self, '$assignment?', $TreeRewriter_assignment$ques$2 = function(node) {
-        var self = this;
-
+      $def(self, '$assignment?', function $TreeRewriter_assignment$ques$1(node) {
+        
         return ["lvasgn", "ivasgn", "gvasgn", "cvasgn", "casgn"]['$include?'](node.$type())
-      }, $TreeRewriter_assignment$ques$2.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$remove', $TreeRewriter_remove$3 = function $$remove(range) {
+      $def(self, '$remove', function $$remove(range) {
         var self = this;
 
         return self.source_rewriter.$remove(range)
-      }, $TreeRewriter_remove$3.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$wrap', $TreeRewriter_wrap$4 = function $$wrap(range, before, after) {
+      $def(self, '$wrap', function $$wrap(range, before, after) {
         var self = this;
 
         return self.source_rewriter.$wrap(range, before, after)
-      }, $TreeRewriter_wrap$4.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$insert_before', $TreeRewriter_insert_before$5 = function $$insert_before(range, content) {
+      $def(self, '$insert_before', function $$insert_before(range, content) {
         var self = this;
 
         return self.source_rewriter.$insert_before(range, content)
-      }, $TreeRewriter_insert_before$5.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$insert_after', $TreeRewriter_insert_after$6 = function $$insert_after(range, content) {
+      $def(self, '$insert_after', function $$insert_after(range, content) {
         var self = this;
 
         return self.source_rewriter.$insert_after(range, content)
-      }, $TreeRewriter_insert_after$6.$$arity = 2);
-      return (Opal.def(self, '$replace', $TreeRewriter_replace$7 = function $$replace(range, content) {
+      }, 2);
+      return $def(self, '$replace', function $$replace(range, content) {
         var self = this;
 
         return self.source_rewriter.$replace(range, content)
-      }, $TreeRewriter_replace$7.$$arity = 2), nil) && 'replace';
-    })($nesting[0], $$$($$$($$($nesting, 'Parser'), 'AST'), 'Processor'), $nesting)
+      }, 2);
+    })($nesting[0], $$$($$$($$('Parser'), 'AST'), 'Processor'), $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $truthy = Opal.truthy, $module = Opal.module;
+Opal.modules["parser"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $$$ = Opal.$$$, $truthy = Opal.truthy, $module = Opal.module;
 
-  Opal.add_stubs(['$=~', '$require', '$raise']);
+  Opal.add_stubs('=~,require,raise');
   
-  if ($truthy($$($nesting, 'RUBY_VERSION')['$=~'](/^1\.[89]\./))) {
+  if ($truthy($$('RUBY_VERSION')['$=~'](/^1\.[89]\./))) {
     
     self.$require("parser/version");
-    self.$raise($$($nesting, 'LoadError'), "" + "parser v" + ($$$($$($nesting, 'Parser'), 'VERSION')) + " cannot run on Ruby " + ($$($nesting, 'RUBY_VERSION')) + ".\n" + "Please upgrade to Ruby 2.0.0 or higher, or use an older version of the parser gem.\n");};
+    self.$raise($$('LoadError'), "parser v" + ($$$($$('Parser'), 'VERSION')) + " cannot run on Ruby " + ($$('RUBY_VERSION')) + ".\n" + "Please upgrade to Ruby 2.0.0 or higher, or use an older version of the parser gem.\n");
+  };
   self.$require("set");
   self.$require("racc/parser");
   self.$require("ast");
@@ -23876,21 +20695,19 @@ Opal.modules["parser"] = function(Opal) {
     self.$require("parser/version");
     self.$require("parser/messages");
     self.$require("parser/deprecation");
-    (function($base, $parent_nesting) {
+    (function($base) {
       var self = $module($base, 'AST');
 
-      var $nesting = [self].concat($parent_nesting);
-
+      
       
       self.$require("parser/ast/node");
       self.$require("parser/ast/processor");
       return self.$require("parser/meta");
-    })($nesting[0], $nesting);
-    (function($base, $parent_nesting) {
+    })($nesting[0]);
+    (function($base) {
       var self = $module($base, 'Source');
 
-      var $nesting = [self].concat($parent_nesting);
-
+      
       
       self.$require("parser/source/buffer");
       self.$require("parser/source/range");
@@ -23916,7 +20733,7 @@ Opal.modules["parser"] = function(Opal) {
       self.$require("parser/source/map/rescue_body");
       self.$require("parser/source/map/heredoc");
       return self.$require("parser/source/map/objc_kwarg");
-    })($nesting[0], $nesting);
+    })($nesting[0]);
     self.$require("parser/syntax_error");
     self.$require("parser/clobbering_error");
     self.$require("parser/diagnostic");
@@ -23926,13 +20743,12 @@ Opal.modules["parser"] = function(Opal) {
     self.$require("parser/lexer/literal");
     self.$require("parser/lexer/stack_state");
     self.$require("parser/lexer/dedenter");
-    (function($base, $parent_nesting) {
+    (function($base) {
       var self = $module($base, 'Builders');
 
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$require("parser/builders/default")
-    })($nesting[0], $nesting);
+    })($nesting[0]);
     self.$require("parser/context");
     self.$require("parser/max_numparam_stack");
     self.$require("parser/current_arg_stack");
@@ -23943,63 +20759,47 @@ Opal.modules["parser"] = function(Opal) {
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/ruby30"] = function(Opal) {
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $hash2 = Opal.hash2, $send = Opal.send, $hash = Opal.hash, $slice = Opal.slice;
-
-  Opal.add_stubs(['$require', '$!', '$include?', '$[]', '$end_with?', '$diagnostic', '$extend_static', '$push', '$cmdarg', '$cond', '$unextend', '$pop', '$children', '$=~', '$declared?', '$static_env', '$in_dynamic_block?', '$expression', '$loc', '$has_ordinary_params?', '$max_numparam_stack', '$dup', '$stack', '$reverse_each', '$>', '$declare', '$register', '$to_i', '$new', '$each', '$split', '$empty?', '$[]=', '$-', '$+', '$compstmt', '$<<', '$preexe', '$nil?', '$begin_body', '$state=', '$alias', '$gvar', '$back_ref', '$undef_method', '$condition_mod', '$loop_mod', '$rescue_body', '$postexe', '$multi_assign', '$assign', '$array', '$op_assign', '$index', '$call_method', '$const_op_assignable', '$const_fetch', '$logical_op', '$not_op', '$command_start=', '$in_kwarg', '$in_kwarg=', '$match_pattern', '$match_pattern_p', '$local_push', '$in_def=', '$in_block=', '$in_block', '$block', '$keyword_cmd', '$multi_lhs', '$begin', '$splat', '$concat', '$assignable', '$index_asgn', '$==', '$attr_asgn', '$const_global', '$const', '$symbol_internal', '$range_inclusive', '$range_exclusive', '$binary_op', '$unary_op', '$match_op', '$ternary', '$endless_method_name', '$def_endless_method', '$local_pop', '$in_def', '$def_endless_singleton', '$associate', '$declared_forward_args?', '$forwarded_args', '$block_pass', '$begin_keyword', '$condition', '$loop', '$case', '$case_match', '$for', '$in_class=', '$def_class', '$in_class', '$def_sclass', '$def_module', '$def_method', '$def_singleton', '$context', '$in_lambda', '$arg', '$restarg', '$size', '$procarg0', '$args', '$has_ordinary_params!', '$set', '$shadowarg', '$extend_dynamic', '$in_lambda=', '$call_lambda', '$has_numparams?', '$numargs', '$top', '$any?', '$when', '$in_pattern', '$if_guard', '$unless_guard', '$match_with_trailing_comma', '$array_pattern', '$find_pattern', '$hash_pattern', '$match_as', '$match_alt', '$const_pattern', '$match_rest', '$match_pair', '$match_label', '$match_nil_pattern', '$accessible', '$match_var', '$ident', '$pin', '$string_compose', '$dedent_string', '$dedent_level', '$string', '$character', '$xstring_compose', '$regexp_options', '$regexp_compose', '$words_compose', '$word', '$symbols_compose', '$string_internal', '$ivar', '$cvar', '$symbol', '$symbol_compose', '$respond_to?', '$negate', '$unary_num', '$integer', '$float', '$rational', '$complex', '$nil', '$self', '$true', '$false', '$__FILE__', '$__LINE__', '$__ENCODING__', '$nth_ref', '$forward_arg', '$declare_forward_args', '$forward_only_args', '$check_kwarg_name', '$kwoptarg', '$kwarg', '$kwnilarg', '$kwrestarg', '$optarg', '$blockarg', '$pair', '$pair_keyword', '$pair_quoted', '$kwsplat', '$yyerrok']);
+Opal.modules["parser/ruby31"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $def = Opal.def, $truthy = Opal.truthy, $not = Opal.not, $hash2 = Opal.hash2, $send = Opal.send, $rb_gt = Opal.rb_gt, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $rb_plus = Opal.rb_plus, $hash = Opal.hash, $const_set = Opal.const_set, $to_ary = Opal.to_ary, $eqeq = Opal.eqeq, $slice = Opal.slice;
+
+  Opal.add_stubs('require,end_with?,[],!,include?,diagnostic,extend_static,push,cmdarg,cond,unextend,pop,children,in_dynamic_block?,declared?,static_env,=~,expression,loc,has_ordinary_params?,max_numparam_stack,dup,stack,reverse_each,>,declare,register,to_i,new,each,split,empty?,[]=,-,+,compstmt,<<,preexe,nil?,begin_body,state=,alias,gvar,back_ref,undef_method,condition_mod,loop_mod,rescue_body,postexe,multi_assign,assign,array,op_assign,index,call_method,const_op_assignable,const_fetch,endless_method_name,def_endless_method,local_pop,in_def,in_def=,def_endless_singleton,logical_op,not_op,command_start=,in_kwarg,in_kwarg=,match_pattern,match_pattern_p,local_push,in_argdef=,in_block=,in_block,block,keyword_cmd,multi_lhs,begin,splat,concat,assignable,index_asgn,==,attr_asgn,const_global,const,symbol_internal,range_inclusive,range_exclusive,binary_op,unary_op,match_op,in_defined=,ternary,associate,declared_forward_args?,forwarded_args,block_pass,declared_anonymous_blockarg?,begin_keyword,condition,loop,case,case_match,for,in_class=,def_class,in_class,def_sclass,def_module,def_method,def_singleton,context,in_lambda,arg,restarg,size,procarg0,args,has_ordinary_params!,set,shadowarg,extend_dynamic,in_lambda=,call_lambda,has_numparams?,numargs,top,any?,when,in_pattern,if_guard,unless_guard,match_with_trailing_comma,array_pattern,find_pattern,hash_pattern,match_as,match_alt,const_pattern,match_rest,match_pair,match_label,match_nil_pattern,accessible,match_var,ident,pin,string_compose,dedent_string,dedent_level,string,character,xstring_compose,regexp_options,regexp_compose,words_compose,word,symbols_compose,string_internal,ivar,cvar,symbol,symbol_compose,respond_to?,negate,unary_num,integer,float,rational,complex,nil,self,true,false,__FILE__,__LINE__,__ENCODING__,nth_ref,declare_forward_args,forward_arg,check_kwarg_name,kwoptarg,kwarg,kwnilarg,kwrestarg,optarg,blockarg,declare_anonymous_blockarg,pair,pair_keyword,pair_label,pair_quoted,kwsplat,yyerrok');
   
   self.$require("racc/parser.rb");
   self.$require("parser");
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
-    var $nesting = [self].concat($parent_nesting);
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     return (function($base, $super, $parent_nesting) {
-      var self = $klass($base, $super, 'Ruby30');
+      var self = $klass($base, $super, 'Ruby31');
 
-      var $nesting = [self].concat($parent_nesting), $Ruby30_version$1, $Ruby30_default_encoding$2, $Ruby30_endless_method_name$3, $Ruby30_local_push$4, $Ruby30_local_pop$5, $Ruby30_try_declare_numparam$6, $Ruby30$8, $Ruby30$10, $Ruby30$12, $Ruby30$14, $Ruby30__reduce_1$16, $Ruby30__reduce_2$17, $Ruby30__reduce_3$18, $Ruby30__reduce_4$19, $Ruby30__reduce_5$20, $Ruby30__reduce_6$21, $Ruby30__reduce_7$22, $Ruby30__reduce_9$23, $Ruby30__reduce_10$24, $Ruby30__reduce_11$25, $Ruby30__reduce_12$26, $Ruby30__reduce_13$27, $Ruby30__reduce_14$28, $Ruby30__reduce_15$29, $Ruby30__reduce_16$30, $Ruby30__reduce_18$31, $Ruby30__reduce_19$32, $Ruby30__reduce_20$33, $Ruby30__reduce_21$34, $Ruby30__reduce_22$35, $Ruby30__reduce_23$36, $Ruby30__reduce_24$37, $Ruby30__reduce_25$38, $Ruby30__reduce_26$39, $Ruby30__reduce_27$40, $Ruby30__reduce_28$41, $Ruby30__reduce_29$42, $Ruby30__reduce_30$43, $Ruby30__reduce_32$44, $Ruby30__reduce_33$45, $Ruby30__reduce_34$46, $Ruby30__reduce_35$47, $Ruby30__reduce_37$48, $Ruby30__reduce_38$49, $Ruby30__reduce_39$50, $Ruby30__reduce_40$51, $Ruby30__reduce_41$52, $Ruby30__reduce_42$53, $Ruby30__reduce_43$54, $Ruby30__reduce_44$55, $Ruby30__reduce_46$56, $Ruby30__reduce_49$57, $Ruby30__reduce_50$58, $Ruby30__reduce_51$59, $Ruby30__reduce_52$60, $Ruby30__reduce_53$61, $Ruby30__reduce_54$62, $Ruby30__reduce_55$63, $Ruby30__reduce_56$64, $Ruby30__reduce_59$65, $Ruby30__reduce_60$66, $Ruby30__reduce_61$67, $Ruby30__reduce_62$68, $Ruby30__reduce_63$69, $Ruby30__reduce_64$70, $Ruby30__reduce_68$71, $Ruby30__reduce_69$72, $Ruby30__reduce_70$73, $Ruby30__reduce_72$74, $Ruby30__reduce_73$75, $Ruby30__reduce_74$76, $Ruby30__reduce_75$77, $Ruby30__reduce_76$78, $Ruby30__reduce_77$79, $Ruby30__reduce_78$80, $Ruby30__reduce_79$81, $Ruby30__reduce_80$82, $Ruby30__reduce_81$83, $Ruby30__reduce_82$84, $Ruby30__reduce_83$85, $Ruby30__reduce_84$86, $Ruby30__reduce_85$87, $Ruby30__reduce_86$88, $Ruby30__reduce_88$89, $Ruby30__reduce_89$90, $Ruby30__reduce_90$91, $Ruby30__reduce_91$92, $Ruby30__reduce_92$93, $Ruby30__reduce_93$94, $Ruby30__reduce_94$95, $Ruby30__reduce_95$96, $Ruby30__reduce_96$97, $Ruby30__reduce_98$98, $Ruby30__reduce_99$99, $Ruby30__reduce_100$100, $Ruby30__reduce_101$101, $Ruby30__reduce_102$102, $Ruby30__reduce_103$103, $Ruby30__reduce_104$104, $Ruby30__reduce_105$105, $Ruby30__reduce_106$106, $Ruby30__reduce_107$107, $Ruby30__reduce_108$108, $Ruby30__reduce_109$109, $Ruby30__reduce_110$110, $Ruby30__reduce_111$111, $Ruby30__reduce_112$112, $Ruby30__reduce_113$113, $Ruby30__reduce_114$114, $Ruby30__reduce_115$115, $Ruby30__reduce_116$116, $Ruby30__reduce_117$117, $Ruby30__reduce_118$118, $Ruby30__reduce_119$119, $Ruby30__reduce_120$120, $Ruby30__reduce_121$121, $Ruby30__reduce_123$122, $Ruby30__reduce_124$123, $Ruby30__reduce_125$124, $Ruby30__reduce_131$125, $Ruby30__reduce_133$126, $Ruby30__reduce_134$127, $Ruby30__reduce_135$128, $Ruby30__reduce_207$129, $Ruby30__reduce_208$130, $Ruby30__reduce_209$131, $Ruby30__reduce_210$132, $Ruby30__reduce_211$133, $Ruby30__reduce_212$134, $Ruby30__reduce_213$135, $Ruby30__reduce_214$136, $Ruby30__reduce_215$137, $Ruby30__reduce_216$138, $Ruby30__reduce_217$139, $Ruby30__reduce_218$140, $Ruby30__reduce_219$141, $Ruby30__reduce_220$142, $Ruby30__reduce_221$143, $Ruby30__reduce_222$144, $Ruby30__reduce_223$145, $Ruby30__reduce_224$146, $Ruby30__reduce_225$147, $Ruby30__reduce_226$148, $Ruby30__reduce_227$149, $Ruby30__reduce_228$150, $Ruby30__reduce_229$151, $Ruby30__reduce_230$152, $Ruby30__reduce_231$153, $Ruby30__reduce_232$154, $Ruby30__reduce_233$155, $Ruby30__reduce_234$156, $Ruby30__reduce_236$157, $Ruby30__reduce_237$158, $Ruby30__reduce_238$159, $Ruby30__reduce_239$160, $Ruby30__reduce_240$161, $Ruby30__reduce_241$162, $Ruby30__reduce_242$163, $Ruby30__reduce_243$164, $Ruby30__reduce_244$165, $Ruby30__reduce_245$166, $Ruby30__reduce_246$167, $Ruby30__reduce_247$168, $Ruby30__reduce_248$169, $Ruby30__reduce_249$170, $Ruby30__reduce_250$171, $Ruby30__reduce_251$172, $Ruby30__reduce_252$173, $Ruby30__reduce_258$174, $Ruby30__reduce_259$175, $Ruby30__reduce_263$176, $Ruby30__reduce_264$177, $Ruby30__reduce_266$178, $Ruby30__reduce_267$179, $Ruby30__reduce_268$180, $Ruby30__reduce_269$181, $Ruby30__reduce_270$182, $Ruby30__reduce_272$183, $Ruby30__reduce_275$184, $Ruby30__reduce_276$185, $Ruby30__reduce_277$186, $Ruby30__reduce_278$187, $Ruby30__reduce_279$188, $Ruby30__reduce_280$189, $Ruby30__reduce_281$190, $Ruby30__reduce_282$191, $Ruby30__reduce_283$192, $Ruby30__reduce_284$193, $Ruby30__reduce_285$194, $Ruby30__reduce_286$195, $Ruby30__reduce_287$196, $Ruby30__reduce_288$197, $Ruby30__reduce_289$198, $Ruby30__reduce_290$199, $Ruby30__reduce_291$200, $Ruby30__reduce_293$201, $Ruby30__reduce_294$202, $Ruby30__reduce_295$203, $Ruby30__reduce_306$204, $Ruby30__reduce_307$205, $Ruby30__reduce_308$206, $Ruby30__reduce_309$207, $Ruby30__reduce_310$208, $Ruby30__reduce_311$209, $Ruby30__reduce_312$210, $Ruby30__reduce_313$211, $Ruby30__reduce_314$212, $Ruby30__reduce_315$213, $Ruby30__reduce_316$214, $Ruby30__reduce_317$215, $Ruby30__reduce_318$216, $Ruby30__reduce_319$217, $Ruby30__reduce_320$218, $Ruby30__reduce_321$219, $Ruby30__reduce_322$220, $Ruby30__reduce_323$221, $Ruby30__reduce_324$222, $Ruby30__reduce_325$223, $Ruby30__reduce_327$224, $Ruby30__reduce_329$225, $Ruby30__reduce_330$226, $Ruby30__reduce_331$227, $Ruby30__reduce_332$228, $Ruby30__reduce_333$229, $Ruby30__reduce_334$230, $Ruby30__reduce_335$231, $Ruby30__reduce_336$232, $Ruby30__reduce_337$233, $Ruby30__reduce_338$234, $Ruby30__reduce_339$235, $Ruby30__reduce_340$236, $Ruby30__reduce_341$237, $Ruby30__reduce_342$238, $Ruby30__reduce_343$239, $Ruby30__reduce_344$240, $Ruby30__reduce_345$241, $Ruby30__reduce_346$242, $Ruby30__reduce_347$243, $Ruby30__reduce_348$244, $Ruby30__reduce_350$245, $Ruby30__reduce_351$246, $Ruby30__reduce_352$247, $Ruby30__reduce_353$248, $Ruby30__reduce_356$249, $Ruby30__reduce_360$250, $Ruby30__reduce_362$251, $Ruby30__reduce_365$252, $Ruby30__reduce_366$253, $Ruby30__reduce_367$254, $Ruby30__reduce_368$255, $Ruby30__reduce_370$256, $Ruby30__reduce_371$257, $Ruby30__reduce_372$258, $Ruby30__reduce_373$259, $Ruby30__reduce_374$260, $Ruby30__reduce_375$261, $Ruby30__reduce_378$262, $Ruby30__reduce_379$263, $Ruby30__reduce_380$264, $Ruby30__reduce_381$265, $Ruby30__reduce_382$266, $Ruby30__reduce_383$267, $Ruby30__reduce_385$268, $Ruby30__reduce_386$269, $Ruby30__reduce_387$270, $Ruby30__reduce_388$271, $Ruby30__reduce_389$272, $Ruby30__reduce_391$273, $Ruby30__reduce_392$274, $Ruby30__reduce_393$275, $Ruby30__reduce_394$276, $Ruby30__reduce_395$277, $Ruby30__reduce_396$278, $Ruby30__reduce_397$279, $Ruby30__reduce_398$280, $Ruby30__reduce_400$281, $Ruby30__reduce_401$282, $Ruby30__reduce_402$283, $Ruby30__reduce_403$284, $Ruby30__reduce_404$285, $Ruby30__reduce_405$286, $Ruby30__reduce_406$287, $Ruby30__reduce_407$288, $Ruby30__reduce_408$289, $Ruby30__reduce_410$290, $Ruby30__reduce_411$291, $Ruby30__reduce_412$292, $Ruby30__reduce_413$293, $Ruby30__reduce_414$294, $Ruby30__reduce_415$295, $Ruby30__reduce_416$296, $Ruby30__reduce_417$297, $Ruby30__reduce_418$298, $Ruby30__reduce_419$299, $Ruby30__reduce_420$300, $Ruby30__reduce_421$301, $Ruby30__reduce_422$302, $Ruby30__reduce_423$303, $Ruby30__reduce_424$304, $Ruby30__reduce_425$305, $Ruby30__reduce_426$306, $Ruby30__reduce_427$307, $Ruby30__reduce_428$308, $Ruby30__reduce_429$309, $Ruby30__reduce_430$310, $Ruby30__reduce_431$311, $Ruby30__reduce_432$312, $Ruby30__reduce_433$313, $Ruby30__reduce_434$314, $Ruby30__reduce_435$315, $Ruby30__reduce_436$316, $Ruby30__reduce_437$317, $Ruby30__reduce_438$318, $Ruby30__reduce_439$319, $Ruby30__reduce_440$320, $Ruby30__reduce_441$321, $Ruby30__reduce_442$322, $Ruby30__reduce_443$323, $Ruby30__reduce_444$324, $Ruby30__reduce_446$325, $Ruby30__reduce_447$326, $Ruby30__reduce_448$327, $Ruby30__reduce_449$328, $Ruby30__reduce_451$329, $Ruby30__reduce_452$330, $Ruby30__reduce_453$331, $Ruby30__reduce_455$332, $Ruby30__reduce_456$333, $Ruby30__reduce_457$334, $Ruby30__reduce_458$335, $Ruby30__reduce_459$336, $Ruby30__reduce_461$337, $Ruby30__reduce_463$338, $Ruby30__reduce_465$339, $Ruby30__reduce_466$340, $Ruby30__reduce_468$341, $Ruby30__reduce_469$342, $Ruby30__reduce_470$343, $Ruby30__reduce_471$344, $Ruby30__reduce_472$345, $Ruby30__reduce_473$346, $Ruby30__reduce_474$347, $Ruby30__reduce_475$348, $Ruby30__reduce_476$349, $Ruby30__reduce_477$350, $Ruby30__reduce_478$351, $Ruby30__reduce_479$352, $Ruby30__reduce_480$353, $Ruby30__reduce_481$354, $Ruby30__reduce_482$355, $Ruby30__reduce_483$356, $Ruby30__reduce_484$357, $Ruby30__reduce_485$358, $Ruby30__reduce_486$359, $Ruby30__reduce_487$360, $Ruby30__reduce_488$361, $Ruby30__reduce_489$362, $Ruby30__reduce_490$363, $Ruby30__reduce_492$364, $Ruby30__reduce_493$365, $Ruby30__reduce_494$366, $Ruby30__reduce_495$367, $Ruby30__reduce_496$368, $Ruby30__reduce_497$369, $Ruby30__reduce_498$370, $Ruby30__reduce_499$371, $Ruby30__reduce_500$372, $Ruby30__reduce_502$373, $Ruby30__reduce_503$374, $Ruby30__reduce_504$375, $Ruby30__reduce_505$376, $Ruby30__reduce_506$377, $Ruby30__reduce_507$378, $Ruby30__reduce_508$379, $Ruby30__reduce_509$380, $Ruby30__reduce_510$381, $Ruby30__reduce_511$382, $Ruby30__reduce_512$383, $Ruby30__reduce_513$384, $Ruby30__reduce_514$385, $Ruby30__reduce_518$386, $Ruby30__reduce_519$387, $Ruby30__reduce_520$388, $Ruby30__reduce_521$389, $Ruby30__reduce_525$390, $Ruby30__reduce_526$391, $Ruby30__reduce_535$392, $Ruby30__reduce_537$393, $Ruby30__reduce_538$394, $Ruby30__reduce_539$395, $Ruby30__reduce_540$396, $Ruby30__reduce_541$397, $Ruby30__reduce_542$398, $Ruby30__reduce_543$399, $Ruby30__reduce_544$400, $Ruby30__reduce_547$401, $Ruby30__reduce_549$402, $Ruby30__reduce_553$403, $Ruby30__reduce_554$404, $Ruby30__reduce_555$405, $Ruby30__reduce_556$406, $Ruby30__reduce_557$407, $Ruby30__reduce_558$408, $Ruby30__reduce_559$409, $Ruby30__reduce_560$410, $Ruby30__reduce_561$411, $Ruby30__reduce_562$412, $Ruby30__reduce_563$413, $Ruby30__reduce_564$414, $Ruby30__reduce_565$415, $Ruby30__reduce_566$416, $Ruby30__reduce_567$417, $Ruby30__reduce_568$418, $Ruby30__reduce_569$419, $Ruby30__reduce_570$420, $Ruby30__reduce_571$421, $Ruby30__reduce_572$422, $Ruby30__reduce_573$423, $Ruby30__reduce_574$424, $Ruby30__reduce_575$425, $Ruby30__reduce_576$426, $Ruby30__reduce_577$427, $Ruby30__reduce_578$428, $Ruby30__reduce_579$429, $Ruby30__reduce_580$430, $Ruby30__reduce_581$431, $Ruby30__reduce_582$432, $Ruby30__reduce_583$433, $Ruby30__reduce_584$434, $Ruby30__reduce_585$435, $Ruby30__reduce_586$436, $Ruby30__reduce_587$437, $Ruby30__reduce_591$438, $Ruby30__reduce_592$439, $Ruby30__reduce_593$440, $Ruby30__reduce_594$441, $Ruby30__reduce_595$442, $Ruby30__reduce_596$443, $Ruby30__reduce_597$444, $Ruby30__reduce_598$445, $Ruby30__reduce_599$446, $Ruby30__reduce_600$447, $Ruby30__reduce_601$448, $Ruby30__reduce_602$449, $Ruby30__reduce_603$450, $Ruby30__reduce_604$451, $Ruby30__reduce_605$452, $Ruby30__reduce_606$453, $Ruby30__reduce_607$454, $Ruby30__reduce_608$455, $Ruby30__reduce_609$456, $Ruby30__reduce_610$457, $Ruby30__reduce_611$458, $Ruby30__reduce_612$459, $Ruby30__reduce_613$460, $Ruby30__reduce_614$461, $Ruby30__reduce_615$462, $Ruby30__reduce_616$463, $Ruby30__reduce_617$464, $Ruby30__reduce_618$465, $Ruby30__reduce_619$466, $Ruby30__reduce_621$467, $Ruby30__reduce_622$468, $Ruby30__reduce_623$469, $Ruby30__reduce_624$470, $Ruby30__reduce_626$471, $Ruby30__reduce_627$472, $Ruby30__reduce_628$473, $Ruby30__reduce_629$474, $Ruby30__reduce_630$475, $Ruby30__reduce_631$476, $Ruby30__reduce_632$477, $Ruby30__reduce_633$478, $Ruby30__reduce_634$479, $Ruby30__reduce_635$480, $Ruby30__reduce_636$481, $Ruby30__reduce_637$482, $Ruby30__reduce_638$483, $Ruby30__reduce_639$484, $Ruby30__reduce_640$485, $Ruby30__reduce_641$486, $Ruby30__reduce_642$487, $Ruby30__reduce_643$488, $Ruby30__reduce_644$489, $Ruby30__reduce_645$490, $Ruby30__reduce_646$491, $Ruby30__reduce_647$492, $Ruby30__reduce_648$493, $Ruby30__reduce_649$494, $Ruby30__reduce_650$495, $Ruby30__reduce_651$496, $Ruby30__reduce_652$497, $Ruby30__reduce_653$498, $Ruby30__reduce_655$499, $Ruby30__reduce_656$500, $Ruby30__reduce_657$501, $Ruby30__reduce_658$502, $Ruby30__reduce_659$503, $Ruby30__reduce_660$504, $Ruby30__reduce_661$505, $Ruby30__reduce_662$506, $Ruby30__reduce_663$507, $Ruby30__reduce_664$508, $Ruby30__reduce_665$509, $Ruby30__reduce_666$510, $Ruby30__reduce_667$511, $Ruby30__reduce_668$512, $Ruby30__reduce_669$513, $Ruby30__reduce_672$514, $Ruby30__reduce_673$515, $Ruby30__reduce_674$516, $Ruby30__reduce_675$517, $Ruby30__reduce_676$518, $Ruby30__reduce_677$519, $Ruby30__reduce_678$520, $Ruby30__reduce_679$521, $Ruby30__reduce_680$522, $Ruby30__reduce_683$523, $Ruby30__reduce_684$524, $Ruby30__reduce_687$525, $Ruby30__reduce_688$526, $Ruby30__reduce_689$527, $Ruby30__reduce_691$528, $Ruby30__reduce_692$529, $Ruby30__reduce_694$530, $Ruby30__reduce_695$531, $Ruby30__reduce_696$532, $Ruby30__reduce_697$533, $Ruby30__reduce_698$534, $Ruby30__reduce_699$535, $Ruby30__reduce_712$536, $Ruby30__reduce_713$537, $Ruby30__reduce_718$538, $Ruby30__reduce_719$539, $Ruby30__reduce_720$540, $Ruby30__reduce_724$541, $Ruby30__reduce_728$542, $Ruby30__reduce_none$543, clist = nil, racc_action_table = nil, arr = nil, idx = nil, racc_action_check = nil, racc_action_pointer = nil, racc_action_default = nil, racc_goto_table = nil, racc_goto_check = nil, racc_goto_pointer = nil, racc_goto_default = nil, racc_reduce_table = nil, racc_reduce_n = nil, racc_shift_n = nil, racc_token_table = nil, racc_nt_base = nil, racc_use_result_var = nil;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), clist = nil, racc_action_table = nil, arr = nil, idx = nil, racc_action_check = nil, racc_action_pointer = nil, racc_action_default = nil, racc_goto_table = nil, racc_goto_check = nil, racc_goto_pointer = nil, racc_goto_default = nil, racc_reduce_table = nil, racc_reduce_n = nil, racc_shift_n = nil, racc_token_table = nil, racc_nt_base = nil, racc_use_result_var = nil, $proto = self.$$prototype;
 
-      self.$$prototype.static_env = self.$$prototype.lexer = self.$$prototype.max_numparam_stack = self.$$prototype.context = self.$$prototype.current_arg_stack = self.$$prototype.builder = self.$$prototype.pattern_variables = self.$$prototype.last_token = self.$$prototype.pattern_hash_keys = nil;
+      $proto.static_env = $proto.lexer = $proto.max_numparam_stack = $proto.context = $proto.current_arg_stack = $proto.builder = $proto.pattern_variables = $proto.last_token = $proto.pattern_hash_keys = nil;
       
       
-      Opal.def(self, '$version', $Ruby30_version$1 = function $$version() {
-        var self = this;
-
-        return 30
-      }, $Ruby30_version$1.$$arity = 0);
+      $def(self, '$version', function $$version() {
+        
+        return 31
+      }, 0);
       
-      Opal.def(self, '$default_encoding', $Ruby30_default_encoding$2 = function $$default_encoding() {
-        var self = this;
-
-        return $$$($$($nesting, 'Encoding'), 'UTF_8')
-      }, $Ruby30_default_encoding$2.$$arity = 0);
+      $def(self, '$default_encoding', function $$default_encoding() {
+        
+        return $$$($$('Encoding'), 'UTF_8')
+      }, 0);
       
-      Opal.def(self, '$endless_method_name', $Ruby30_endless_method_name$3 = function $$endless_method_name(name_t) {
-        var self = this, $ret_or_1 = nil;
+      $def(self, '$endless_method_name', function $$endless_method_name(name_t) {
+        var self = this;
 
-        if ($truthy((function() {if ($truthy(($ret_or_1 = ["===", "==", "!=", "<=", ">="]['$include?'](name_t['$[]'](0))['$!']()))) {
-          return name_t['$[]'](0)['$end_with?']("=")
-        } else {
-          return $ret_or_1
-        }; return nil; })())) {
+        if (($not(["===", "==", "!=", "<=", ">="]['$include?'](name_t['$[]'](0))) && ($truthy(name_t['$[]'](0)['$end_with?']("="))))) {
           return self.$diagnostic("error", "endless_setter", nil, name_t)
         } else {
           return nil
         }
-      }, $Ruby30_endless_method_name$3.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$local_push', $Ruby30_local_push$4 = function $$local_push() {
+      $def(self, '$local_push', function $$local_push() {
         var self = this;
 
         
@@ -24007,9 +20807,9 @@ Opal.modules["parser/ruby30"] = function(Opal) {
         self.lexer.$cmdarg().$push(false);
         self.lexer.$cond().$push(false);
         return self.max_numparam_stack.$push($hash2(["static"], {"static": true}));
-      }, $Ruby30_local_push$4.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$local_pop', $Ruby30_local_pop$5 = function $$local_pop() {
+      $def(self, '$local_pop', function $$local_pop() {
         var self = this;
 
         
@@ -24017,35 +20817,26 @@ Opal.modules["parser/ruby30"] = function(Opal) {
         self.lexer.$cmdarg().$pop();
         self.lexer.$cond().$pop();
         return self.max_numparam_stack.$pop();
-      }, $Ruby30_local_pop$5.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$try_declare_numparam', $Ruby30_try_declare_numparam$6 = function $$try_declare_numparam(node) {
-        var $$7, self = this, name = nil, $ret_or_2 = nil, $ret_or_3 = nil, location = nil, raw_max_numparam_stack = nil;
+      $def(self, '$try_declare_numparam', function $$try_declare_numparam(node) {
+        var self = this, name = nil, location = nil, raw_max_numparam_stack = nil;
 
         
         name = node.$children()['$[]'](0);
-        if ($truthy((function() {if ($truthy(($ret_or_2 = (function() {if ($truthy(($ret_or_3 = name['$=~'](/^_[1-9]$/)))) {
-          return self.$static_env()['$declared?'](name)['$!']()
-        } else {
-          return $ret_or_3
-        }; return nil; })()))) {
-          return self.context['$in_dynamic_block?']()
-        } else {
-          return $ret_or_2
-        }; return nil; })())) {
+        if ((($truthy(name['$=~'](/^_[1-9]$/)) && ($not(self.$static_env()['$declared?'](name)))) && ($truthy(self.context['$in_dynamic_block?']())))) {
           
           location = node.$loc().$expression();
           if ($truthy(self.$max_numparam_stack()['$has_ordinary_params?']())) {
-            self.$diagnostic("error", "ordinary_param_defined", nil, [nil, location])};
+            self.$diagnostic("error", "ordinary_param_defined", nil, [nil, location])
+          };
           raw_max_numparam_stack = self.$max_numparam_stack().$stack().$dup();
           raw_max_numparam_stack.$pop();
-          (function(){var $brk = Opal.new_brk(); try {return $send(raw_max_numparam_stack, 'reverse_each', [], ($$7 = function(outer_scope){var self = $$7.$$s == null ? this : $$7.$$s, outer_scope_has_numparams = nil;
+          (function(){var $brk = Opal.new_brk(); try {return $send(raw_max_numparam_stack, 'reverse_each', [], function $$1(outer_scope){var self = $$1.$$s == null ? this : $$1.$$s, outer_scope_has_numparams = nil;
 
             
             
-            if (outer_scope == null) {
-              outer_scope = nil;
-            };
+            if (outer_scope == null) outer_scope = nil;;
             if ($truthy(outer_scope['$[]']("static"))) {
               
               Opal.brk(nil, $brk)
@@ -24057,7 +20848,7 @@ Opal.modules["parser/ruby30"] = function(Opal) {
               } else {
                 return nil
               };
-            };}, $$7.$$s = self, $$7.$$brk = $brk, $$7.$$arity = 1, $$7))
+            };}, {$$arity: 1, $$s: self, $$brk: $brk})
           } catch (err) { if (err === $brk) { return err.$v } else { throw err } }})();
           self.$static_env().$declare(name);
           self.$max_numparam_stack().$register(name['$[]'](1).$to_i());
@@ -24065,131 +20856,107 @@ Opal.modules["parser/ruby30"] = function(Opal) {
         } else {
           return false
         };
-      }, $Ruby30_try_declare_numparam$6.$$arity = 1);
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-      racc_action_table = (arr = $$$('::', 'Array').$new(28007, nil));
+      }, 1);
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+      racc_action_table = (arr = $$$('Array').$new(28717, nil));
       idx = 0;
-      $send(clist, 'each', [], ($Ruby30$8 = function(str){var self = $Ruby30$8.$$s == null ? this : $Ruby30$8.$$s, $$9;
-
+      $send(clist, 'each', [], function $Ruby31$2(str){
         
         
-        if (str == null) {
-          str = nil;
-        };
-        return $send(str.$split(",", -1), 'each', [], ($$9 = function(i){var self = $$9.$$s == null ? this : $$9.$$s, $writer = nil;
+        if (str == null) str = nil;;
+        return $send(str.$split(",", -1), 'each', [], function $$3(i){var $writer = nil;
 
           
           
-          if (i == null) {
-            i = nil;
-          };
-          if ($truthy(i['$empty?']())) {
-          } else {
+          if (i == null) i = nil;;
+          if (!$truthy(i['$empty?']())) {
             
             $writer = [idx, i.$to_i()];
-            $send(arr, '[]=', Opal.to_a($writer));
+            $send(arr, '[]=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];
           };
-          return (idx = $rb_plus(idx, 1));}, $$9.$$s = self, $$9.$$arity = 1, $$9));}, $Ruby30$8.$$s = self, $Ruby30$8.$$arity = 1, $Ruby30$8));
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-      racc_action_check = (arr = $$$('::', 'Array').$new(28007, nil));
+          return (idx = $rb_plus(idx, 1));}, 1);}, 1);
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+      racc_action_check = (arr = $$$('Array').$new(28717, nil));
       idx = 0;
-      $send(clist, 'each', [], ($Ruby30$10 = function(str){var self = $Ruby30$10.$$s == null ? this : $Ruby30$10.$$s, $$11;
-
+      $send(clist, 'each', [], function $Ruby31$4(str){
         
         
-        if (str == null) {
-          str = nil;
-        };
-        return $send(str.$split(",", -1), 'each', [], ($$11 = function(i){var self = $$11.$$s == null ? this : $$11.$$s, $writer = nil;
+        if (str == null) str = nil;;
+        return $send(str.$split(",", -1), 'each', [], function $$5(i){var $writer = nil;
 
           
           
-          if (i == null) {
-            i = nil;
-          };
-          if ($truthy(i['$empty?']())) {
-          } else {
+          if (i == null) i = nil;;
+          if (!$truthy(i['$empty?']())) {
             
             $writer = [idx, i.$to_i()];
-            $send(arr, '[]=', Opal.to_a($writer));
+            $send(arr, '[]=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];
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-      racc_goto_table = (arr = $$$('::', 'Array').$new(4137, nil));
+          return (idx = $rb_plus(idx, 1));}, 1);}, 1);
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",,,,,,,,,,,,,,,,,,,,,,,,,317,,,,,,,,,317,,,317,,,,,,,,,,,,,,,,,,,,,", ",,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,317,,,,,,,,453,,,,,,,,", ",,,,1010,1011,,,,,,,,,,,,,,,,,,,,,,,,,,,,1033,1034,453,453,453,453,", ",,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,1067,,,,,,,,,,,,,,,,,,,,,,,,,", ",,317,,,,,,,,,,,,,,,,,,,317,,,,,,,,,,,,,,,,,,,,,,,,,,453,,,,,,,,,,,", ",,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,", ",,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,317"];
+      racc_goto_table = (arr = $$$('Array').$new(4752, nil));
       idx = 0;
-      $send(clist, 'each', [], ($Ruby30$12 = function(str){var self = $Ruby30$12.$$s == null ? this : $Ruby30$12.$$s, $$13;
-
+      $send(clist, 'each', [], function $Ruby31$6(str){
         
         
-        if (str == null) {
-          str = nil;
-        };
-        return $send(str.$split(",", -1), 'each', [], ($$13 = function(i){var self = $$13.$$s == null ? this : $$13.$$s, $writer = nil;
+        if (str == null) str = nil;;
+        return $send(str.$split(",", -1), 'each', [], function $$7(i){var $writer = nil;
 
           
           
-          if (i == null) {
-            i = nil;
-          };
-          if ($truthy(i['$empty?']())) {
-          } else {
+          if (i == null) i = nil;;
+          if (!$truthy(i['$empty?']())) {
             
             $writer = [idx, i.$to_i()];
-            $send(arr, '[]=', Opal.to_a($writer));
+            $send(arr, '[]=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];
           };
-          return (idx = $rb_plus(idx, 1));}, $$13.$$s = self, $$13.$$arity = 1, $$13));}, $Ruby30$12.$$s = self, $Ruby30$12.$$arity = 1, $Ruby30$12));
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-      racc_goto_check = (arr = $$$('::', 'Array').$new(4137, nil));
+          return (idx = $rb_plus(idx, 1));}, 1);}, 1);
+      clist = ["72,198,158,91,91,72,75,75,36,36,36,68,46,198,31,230,230,48,107,19,19", "10,75,19,72,34,112,10,128,113,34,12,55,55,82,82,72,72,72,73,117,139", "139,94,33,110,110,11,92,228,228,228,77,77,13,33,135,70,133,22,111,34", "34,34,72,9,44,44,80,17,17,82,82,82,72,72,72,19,19,19,19,239,87,87,56", "56,56,235,8,34,95,20,95,8,20,51,31,32,187,34,34,34,69,41,41,177,177", "58,20,55,117,7,24,24,149,28,26,26,119,57,26,129,72,239,89,89,152,192", "89,28,87,72,231,72,151,225,225,200,200,5,35,35,64,193,2,157,157,34,90", "90,90,127,8,147,130,236,34,145,34,207,161,6,3,10,214,214,29,14,65,178", "178,29,161,16,26,26,26,26,18,178,94,90,90,175,224,224,13,21,66,25,239", "230,176,74,74,27,42,91,36,43,95,95,29,45,202,202,50,52,60,5,8,78,215", "215,215,215,72,83,84,8,86,8,75,93,152,236,105,11,72,106,29,114,151,116", "72,149,198,120,121,122,123,34,124,34,128,125,34,126,128,131,136,72,142", "34,22,22,143,150,22,34,34,112,11,146,66,146,26,26,33,88,88,88,22,73", 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+      racc_goto_check = (arr = $$$('Array').$new(4752, nil));
       idx = 0;
-      $send(clist, 'each', [], ($Ruby30$14 = function(str){var self = $Ruby30$14.$$s == null ? this : $Ruby30$14.$$s, $$15;
-
+      $send(clist, 'each', [], function $Ruby31$8(str){
         
         
-        if (str == null) {
-          str = nil;
-        };
-        return $send(str.$split(",", -1), 'each', [], ($$15 = function(i){var self = $$15.$$s == null ? this : $$15.$$s, $writer = nil;
+        if (str == null) str = nil;;
+        return $send(str.$split(",", -1), 'each', [], function $$9(i){var $writer = nil;
 
           
           
-          if (i == null) {
-            i = nil;
-          };
-          if ($truthy(i['$empty?']())) {
-          } else {
+          if (i == null) i = nil;;
+          if (!$truthy(i['$empty?']())) {
             
             $writer = [idx, i.$to_i()];
-            $send(arr, '[]=', Opal.to_a($writer));
+            $send(arr, '[]=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];
           };
-          return (idx = $rb_plus(idx, 1));}, $$15.$$s = self, $$15.$$arity = 1, $$15));}, $Ruby30$14.$$s = self, $Ruby30$14.$$arity = 1, $Ruby30$14));
-      racc_goto_pointer = [nil, 312, 149, 181, nil, 64, 154, 16, 63, 57, -265, 64, -531, -701, -732, nil, -336, 57, 195, -44, -104, 131, 40, 116, -178, -10, 832, 74, -140, 1226, 1125, -181, 196, -15, 2017, -14, 2981, -320, -33, -33, -2, -405, -15, nil, -14, 16, nil, 69, 191, 122, -289, -16, nil, nil, -202, 125, -250, -382, 471, -293, nil, 2372, 132, 88, 91, 1203, nil, -31, 42, -197, 1505, -2, -345, 124, -9, nil, 39, -205, 654, 53, nil, 152, -18, 178, 1258, 161, -23, 6, -264, 45, 52, -249, -281, -277, -377, nil, 1768, 1747, 1430, 1286, 1817, 2433, 2009, 2394, 206, 163, -58, nil, 732, -280, -739, -380, -609, 156, nil, -171, 20, nil, 84, 169, -133, 177, -392, -580, -160, -801, -268, -428, -783, -693, 145, -663, nil, -654, nil, -519, -142, 256, -762, -652, -189, -766, -684, -592, nil, -670, -812, -895, -908, -150, -569, 177, -376, -232, -21, -696, -695, -318, -19, nil, -28, -26, nil, nil, -452, -778, -668, -913, -523, -831, -662, -653, -565, -661, -686, nil, -577, nil, -577, -405, -403, nil, nil, -582, -404, -404, nil, -629, -873, -950, nil, -770, -769, nil, -76, nil, -639, nil, -528, nil, -459, -746, nil, nil, 227, 223, 228, 228, -218, -241, 228, 236, 245, -289, -282, nil, nil, -268, -158, -224, nil, nil, -184, -600, -310, -672, 128, -401, -716, -649, -930, nil, nil, -481];
-      racc_goto_default = [nil, nil, nil, nil, 5, nil, 6, 389, 324, nil, nil, 563, nil, 948, nil, 321, 322, nil, nil, nil, 13, 14, 20, 239, nil, nil, 16, nil, 439, 240, 353, nil, nil, 634, 238, 474, 23, 997, nil, nil, nil, nil, nil, 384, 143, 52, 24, 53, nil, nil, nil, 25, 26, 27, 757, nil, nil, nil, 341, nil, 28, 338, 453, 35, nil, nil, 37, 40, 39, nil, 235, 236, 401, nil, 461, 142, 87, nil, 444, 103, 49, nil, 54, 273, 313, nil, 919, 454, nil, 455, 466, nil, 683, 524, 311, 297, 55, 56, 57, 58, 59, 60, 61, 62, 63, nil, 298, 69, 70, nil, nil, nil, nil, nil, 77, nil, 616, 78, 363, nil, nil, nil, nil, nil, nil, 782, 583, nil, 783, 784, 571, 565, 566, 1143, 1013, nil, 572, nil, nil, nil, 601, nil, 574, nil, 906, nil, nil, nil, 581, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, 465, nil, nil, 736, 728, nil, nil, nil, nil, nil, nil, nil, nil, nil, 882, nil, 696, 705, 697, 698, nil, nil, 699, 700, nil, nil, nil, 881, 883, nil, 884, 982, 983, 984, 985, nil, 989, 592, 990, 704, 706, nil, nil, 86, 88, 89, nil, nil, nil, nil, 644, nil, nil, nil, nil, nil, 99, 100, nil, 364, 926, 367, 570, 769, 573, 938, 586, 588, 589, 1024, 593, 1025, 596, 599, 316];
-      racc_reduce_table = [0, 0, "racc_error", 0, 150, "_reduce_1", 2, 148, "_reduce_2", 2, 149, "_reduce_3", 0, 151, "_reduce_4", 1, 151, "_reduce_5", 3, 151, "_reduce_6", 2, 151, "_reduce_7", 1, 153, "_reduce_none", 2, 153, "_reduce_9", 3, 156, "_reduce_10", 4, 157, "_reduce_11", 2, 158, "_reduce_12", 0, 162, "_reduce_13", 1, 162, "_reduce_14", 3, 162, "_reduce_15", 2, 162, "_reduce_16", 1, 163, "_reduce_none", 2, 163, "_reduce_18", 0, 174, "_reduce_19", 4, 155, "_reduce_20", 3, 155, "_reduce_21", 3, 155, "_reduce_22", 3, 155, "_reduce_23", 2, 155, "_reduce_24", 3, 155, "_reduce_25", 3, 155, "_reduce_26", 3, 155, "_reduce_27", 3, 155, "_reduce_28", 3, 155, "_reduce_29", 4, 155, "_reduce_30", 1, 155, "_reduce_none", 3, 155, "_reduce_32", 3, 155, "_reduce_33", 5, 155, "_reduce_34", 3, 155, "_reduce_35", 1, 155, "_reduce_none", 3, 167, "_reduce_37", 3, 167, "_reduce_38", 6, 167, "_reduce_39", 5, 167, "_reduce_40", 5, 167, "_reduce_41", 5, 167, "_reduce_42", 5, 167, "_reduce_43", 3, 167, "_reduce_44", 1, 175, "_reduce_none", 3, 175, "_reduce_46", 1, 175, "_reduce_none", 1, 173, "_reduce_none", 3, 173, "_reduce_49", 3, 173, "_reduce_50", 3, 173, "_reduce_51", 2, 173, "_reduce_52", 0, 185, "_reduce_53", 4, 173, "_reduce_54", 0, 186, "_reduce_55", 4, 173, "_reduce_56", 1, 173, "_reduce_none", 1, 166, "_reduce_none", 0, 190, "_reduce_59", 3, 187, "_reduce_60", 1, 189, "_reduce_61", 2, 192, "_reduce_62", 0, 197, "_reduce_63", 5, 194, "_reduce_64", 1, 169, "_reduce_none", 1, 169, "_reduce_none", 1, 199, "_reduce_none", 4, 199, "_reduce_68", 0, 206, "_reduce_69", 4, 203, "_reduce_70", 1, 205, "_reduce_none", 2, 198, "_reduce_72", 3, 198, "_reduce_73", 4, 198, "_reduce_74", 5, 198, "_reduce_75", 4, 198, "_reduce_76", 5, 198, "_reduce_77", 2, 198, "_reduce_78", 2, 198, "_reduce_79", 2, 198, "_reduce_80", 2, 198, "_reduce_81", 2, 198, "_reduce_82", 1, 168, "_reduce_83", 3, 168, "_reduce_84", 1, 211, "_reduce_85", 3, 211, "_reduce_86", 1, 210, "_reduce_none", 2, 210, 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-      racc_reduce_n = 729;
-      racc_shift_n = 1219;
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+      racc_reduce_table = [0, 0, "racc_error", 0, 150, "_reduce_1", 2, 148, "_reduce_2", 2, 149, "_reduce_3", 0, 151, "_reduce_4", 1, 151, "_reduce_5", 3, 151, "_reduce_6", 2, 151, "_reduce_7", 1, 153, "_reduce_none", 2, 153, "_reduce_9", 3, 156, "_reduce_10", 4, 157, "_reduce_11", 2, 158, "_reduce_12", 0, 162, "_reduce_13", 1, 162, "_reduce_14", 3, 162, "_reduce_15", 2, 162, "_reduce_16", 1, 163, "_reduce_none", 2, 163, "_reduce_18", 0, 174, "_reduce_19", 4, 155, "_reduce_20", 3, 155, "_reduce_21", 3, 155, "_reduce_22", 3, 155, "_reduce_23", 2, 155, "_reduce_24", 3, 155, "_reduce_25", 3, 155, "_reduce_26", 3, 155, "_reduce_27", 3, 155, "_reduce_28", 3, 155, "_reduce_29", 4, 155, "_reduce_30", 1, 155, "_reduce_none", 3, 155, "_reduce_32", 3, 155, "_reduce_33", 5, 155, "_reduce_34", 3, 155, "_reduce_35", 1, 155, "_reduce_none", 3, 167, "_reduce_37", 3, 167, "_reduce_38", 6, 167, "_reduce_39", 5, 167, "_reduce_40", 5, 167, "_reduce_41", 5, 167, "_reduce_42", 5, 167, "_reduce_43", 4, 167, "_reduce_44", 6, 167, "_reduce_45", 4, 167, "_reduce_46", 6, 167, "_reduce_47", 3, 167, "_reduce_48", 1, 175, "_reduce_none", 3, 175, "_reduce_50", 1, 175, "_reduce_none", 1, 173, "_reduce_none", 3, 173, "_reduce_53", 3, 173, "_reduce_54", 3, 173, "_reduce_55", 2, 173, "_reduce_56", 0, 189, "_reduce_57", 4, 173, "_reduce_58", 0, 190, "_reduce_59", 4, 173, "_reduce_60", 1, 173, "_reduce_none", 1, 166, "_reduce_none", 0, 194, "_reduce_63", 3, 191, "_reduce_64", 1, 193, "_reduce_65", 2, 181, "_reduce_66", 0, 199, "_reduce_67", 5, 185, "_reduce_68", 1, 169, "_reduce_none", 1, 169, "_reduce_none", 1, 200, "_reduce_none", 4, 200, "_reduce_72", 0, 207, "_reduce_73", 4, 204, "_reduce_74", 1, 206, "_reduce_none", 2, 183, "_reduce_76", 3, 183, "_reduce_77", 4, 183, "_reduce_78", 5, 183, "_reduce_79", 4, 183, "_reduce_80", 5, 183, "_reduce_81", 2, 183, "_reduce_82", 2, 183, "_reduce_83", 2, 183, "_reduce_84", 2, 183, "_reduce_85", 2, 183, "_reduce_86", 1, 168, "_reduce_87", 3, 168, "_reduce_88", 1, 212, "_reduce_89", 3, 212, "_reduce_90", 1, 211, "_reduce_none", 2, 211, "_reduce_92", 3, 211, "_reduce_93", 5, 211, "_reduce_94", 2, 211, "_reduce_95", 4, 211, "_reduce_96", 2, 211, "_reduce_97", 4, 211, "_reduce_98", 1, 211, "_reduce_99", 3, 211, "_reduce_100", 1, 215, "_reduce_none", 3, 215, "_reduce_102", 2, 214, "_reduce_103", 3, 214, "_reduce_104", 1, 217, "_reduce_105", 3, 217, "_reduce_106", 1, 216, "_reduce_107", 1, 216, "_reduce_108", 4, 216, "_reduce_109", 3, 216, "_reduce_110", 3, 216, "_reduce_111", 3, 216, "_reduce_112", 3, 216, "_reduce_113", 2, 216, "_reduce_114", 1, 216, "_reduce_115", 1, 170, "_reduce_116", 1, 170, "_reduce_117", 4, 170, "_reduce_118", 3, 170, "_reduce_119", 3, 170, "_reduce_120", 3, 170, "_reduce_121", 3, 170, "_reduce_122", 2, 170, "_reduce_123", 1, 170, "_reduce_124", 1, 220, "_reduce_125", 1, 220, "_reduce_none", 2, 221, "_reduce_127", 1, 221, "_reduce_128", 3, 221, "_reduce_129", 1, 195, "_reduce_none", 1, 195, "_reduce_none", 1, 195, "_reduce_none", 1, 195, "_reduce_none", 1, 195, "_reduce_none", 1, 164, "_reduce_135", 1, 164, "_reduce_none", 1, 165, "_reduce_137", 0, 225, "_reduce_138", 4, 165, "_reduce_139", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 3, 184, "_reduce_211", 3, 184, "_reduce_212", 6, 184, "_reduce_213", 5, 184, "_reduce_214", 5, 184, "_reduce_215", 5, 184, "_reduce_216", 5, 184, "_reduce_217", 4, 184, "_reduce_218", 3, 184, "_reduce_219", 3, 184, "_reduce_220", 3, 184, "_reduce_221", 2, 184, "_reduce_222", 2, 184, "_reduce_223", 2, 184, "_reduce_224", 2, 184, "_reduce_225", 3, 184, "_reduce_226", 3, 184, "_reduce_227", 3, 184, "_reduce_228", 3, 184, "_reduce_229", 3, 184, "_reduce_230", 3, 184, "_reduce_231", 4, 184, "_reduce_232", 2, 184, "_reduce_233", 2, 184, "_reduce_234", 3, 184, "_reduce_235", 3, 184, "_reduce_236", 3, 184, "_reduce_237", 3, 184, "_reduce_238", 1, 184, "_reduce_none", 3, 184, "_reduce_240", 3, 184, "_reduce_241", 3, 184, "_reduce_242", 3, 184, "_reduce_243", 3, 184, "_reduce_244", 2, 184, "_reduce_245", 2, 184, "_reduce_246", 3, 184, "_reduce_247", 3, 184, "_reduce_248", 3, 184, "_reduce_249", 3, 184, "_reduce_250", 0, 231, "_reduce_251", 4, 184, "_reduce_252", 6, 184, "_reduce_253", 4, 184, "_reduce_254", 6, 184, "_reduce_255", 4, 184, "_reduce_256", 6, 184, "_reduce_257", 1, 184, "_reduce_none", 1, 230, "_reduce_none", 1, 230, "_reduce_none", 1, 230, "_reduce_none", 1, 230, "_reduce_none", 3, 228, "_reduce_263", 3, 228, "_reduce_264", 1, 232, "_reduce_none", 1, 233, "_reduce_none", 2, 233, "_reduce_none", 4, 233, "_reduce_268", 2, 233, "_reduce_269", 1, 226, "_reduce_none", 3, 226, "_reduce_271", 3, 238, "_reduce_272", 5, 238, "_reduce_273", 3, 238, "_reduce_274", 0, 240, "_reduce_275", 1, 240, "_reduce_none", 0, 178, "_reduce_277", 1, 178, "_reduce_none", 2, 178, "_reduce_none", 4, 178, "_reduce_280", 2, 178, "_reduce_281", 1, 210, "_reduce_282", 2, 210, "_reduce_283", 2, 210, "_reduce_284", 4, 210, "_reduce_285", 1, 210, "_reduce_286", 0, 243, "_reduce_287", 2, 203, "_reduce_288", 2, 242, "_reduce_289", 1, 242, "_reduce_290", 2, 241, "_reduce_291", 0, 241, "_reduce_292", 1, 235, "_reduce_293", 2, 235, "_reduce_294", 3, 235, "_reduce_295", 4, 235, "_reduce_296", 1, 172, "_reduce_297", 1, 172, "_reduce_none", 3, 171, "_reduce_299", 4, 171, "_reduce_300", 2, 171, "_reduce_301", 1, 229, "_reduce_none", 1, 229, "_reduce_none", 1, 229, "_reduce_none", 1, 229, "_reduce_none", 1, 229, "_reduce_none", 1, 229, "_reduce_none", 1, 229, "_reduce_none", 1, 229, "_reduce_none", 1, 229, "_reduce_none", 1, 229, "_reduce_none", 1, 229, "_reduce_312", 0, 267, "_reduce_313", 4, 229, "_reduce_314", 0, 268, "_reduce_315", 4, 229, "_reduce_316", 0, 269, "_reduce_317", 4, 229, "_reduce_318", 3, 229, "_reduce_319", 3, 229, "_reduce_320", 2, 229, "_reduce_321", 3, 229, "_reduce_322", 3, 229, "_reduce_323", 1, 229, "_reduce_324", 4, 229, "_reduce_325", 3, 229, "_reduce_326", 1, 229, "_reduce_327", 0, 270, "_reduce_328", 6, 229, "_reduce_329", 4, 229, "_reduce_330", 3, 229, "_reduce_331", 2, 229, "_reduce_332", 1, 229, "_reduce_none", 2, 229, "_reduce_334", 1, 229, "_reduce_none", 6, 229, "_reduce_336", 6, 229, "_reduce_337", 4, 229, "_reduce_338", 4, 229, "_reduce_339", 5, 229, "_reduce_340", 4, 229, "_reduce_341", 5, 229, "_reduce_342", 6, 229, "_reduce_343", 0, 271, "_reduce_344", 6, 229, "_reduce_345", 0, 272, "_reduce_346", 7, 229, "_reduce_347", 0, 273, "_reduce_348", 5, 229, "_reduce_349", 4, 229, "_reduce_350", 4, 229, "_reduce_351", 1, 229, "_reduce_352", 1, 229, "_reduce_353", 1, 229, "_reduce_354", 1, 229, "_reduce_355", 1, 177, "_reduce_none", 1, 262, "_reduce_357", 1, 265, "_reduce_358", 1, 196, "_reduce_359", 1, 209, "_reduce_360", 1, 257, "_reduce_none", 1, 257, "_reduce_none", 2, 257, "_reduce_363", 1, 192, "_reduce_none", 1, 192, "_reduce_none", 1, 258, "_reduce_none", 5, 258, "_reduce_367", 1, 160, "_reduce_none", 2, 160, "_reduce_369", 1, 261, "_reduce_none", 1, 261, "_reduce_none", 1, 274, "_reduce_372", 3, 274, "_reduce_373", 1, 277, "_reduce_374", 3, 277, "_reduce_375", 1, 276, "_reduce_none", 3, 276, "_reduce_377", 5, 276, "_reduce_378", 1, 276, "_reduce_379", 3, 276, "_reduce_380", 2, 278, "_reduce_381", 1, 278, "_reduce_382", 1, 279, "_reduce_none", 1, 279, "_reduce_none", 0, 284, "_reduce_385", 2, 282, "_reduce_386", 4, 283, "_reduce_387", 2, 283, "_reduce_388", 2, 283, "_reduce_389", 1, 283, "_reduce_390", 2, 288, "_reduce_391", 0, 288, "_reduce_392", 1, 289, "_reduce_none", 6, 290, "_reduce_394", 8, 290, "_reduce_395", 4, 290, "_reduce_396", 6, 290, "_reduce_397", 4, 290, "_reduce_398", 2, 290, "_reduce_none", 6, 290, "_reduce_400", 2, 290, "_reduce_401", 4, 290, "_reduce_402", 6, 290, "_reduce_403", 2, 290, "_reduce_404", 4, 290, "_reduce_405", 2, 290, "_reduce_406", 4, 290, "_reduce_407", 1, 290, "_reduce_none", 0, 294, "_reduce_409", 1, 294, "_reduce_410", 3, 295, "_reduce_411", 4, 295, "_reduce_412", 1, 296, "_reduce_413", 4, 296, "_reduce_414", 1, 297, "_reduce_415", 3, 297, "_reduce_416", 1, 298, "_reduce_417", 1, 298, "_reduce_none", 0, 302, "_reduce_419", 0, 303, "_reduce_420", 5, 256, "_reduce_421", 4, 300, "_reduce_422", 1, 300, "_reduce_423", 0, 306, "_reduce_424", 4, 301, "_reduce_425", 0, 307, "_reduce_426", 4, 301, "_reduce_427", 0, 309, "_reduce_428", 4, 305, "_reduce_429", 2, 201, "_reduce_430", 4, 201, "_reduce_431", 5, 201, "_reduce_432", 5, 201, "_reduce_433", 2, 255, "_reduce_434", 4, 255, "_reduce_435", 4, 255, "_reduce_436", 3, 255, "_reduce_437", 3, 255, "_reduce_438", 3, 255, "_reduce_439", 2, 255, "_reduce_440", 1, 255, "_reduce_441", 4, 255, "_reduce_442", 0, 311, "_reduce_443", 4, 254, "_reduce_444", 0, 312, "_reduce_445", 4, 254, "_reduce_446", 0, 313, "_reduce_447", 3, 205, "_reduce_448", 0, 314, "_reduce_449", 0, 315, "_reduce_450", 4, 308, "_reduce_451", 5, 259, "_reduce_452", 1, 316, "_reduce_453", 1, 316, "_reduce_none", 0, 319, "_reduce_455", 0, 320, "_reduce_456", 7, 260, "_reduce_457", 1, 318, "_reduce_458", 1, 318, "_reduce_none", 1, 317, "_reduce_460", 3, 317, "_reduce_461", 3, 317, "_reduce_462", 1, 188, "_reduce_none", 2, 188, "_reduce_464", 3, 188, "_reduce_465", 1, 188, "_reduce_466", 1, 188, "_reduce_467", 1, 188, "_reduce_468", 1, 321, "_reduce_none", 3, 326, "_reduce_470", 1, 326, "_reduce_none", 3, 328, "_reduce_472", 1, 328, "_reduce_none", 1, 330, "_reduce_474", 1, 331, "_reduce_475", 1, 329, "_reduce_none", 1, 329, "_reduce_none", 4, 329, "_reduce_478", 4, 329, "_reduce_479", 4, 329, "_reduce_480", 3, 329, "_reduce_481", 4, 329, "_reduce_482", 4, 329, "_reduce_483", 4, 329, "_reduce_484", 3, 329, "_reduce_485", 3, 329, "_reduce_486", 3, 329, "_reduce_487", 2, 329, "_reduce_488", 0, 335, "_reduce_489", 4, 329, "_reduce_490", 2, 329, "_reduce_491", 0, 336, "_reduce_492", 4, 329, "_reduce_493", 1, 322, "_reduce_494", 1, 322, "_reduce_495", 2, 322, "_reduce_496", 3, 322, "_reduce_497", 5, 322, "_reduce_498", 2, 322, "_reduce_499", 4, 322, "_reduce_500", 1, 322, "_reduce_none", 2, 337, "_reduce_502", 3, 337, "_reduce_503", 1, 324, "_reduce_504", 3, 324, "_reduce_505", 5, 323, "_reduce_506", 2, 340, "_reduce_507", 1, 340, "_reduce_508", 1, 339, "_reduce_509", 3, 339, "_reduce_510", 1, 338, "_reduce_none", 3, 325, "_reduce_512", 1, 325, "_reduce_513", 2, 325, "_reduce_514", 1, 325, "_reduce_515", 1, 341, "_reduce_516", 3, 341, "_reduce_517", 2, 343, "_reduce_518", 1, 343, "_reduce_519", 1, 344, "_reduce_520", 3, 344, "_reduce_521", 2, 346, "_reduce_522", 1, 346, "_reduce_523", 2, 348, "_reduce_524", 1, 342, "_reduce_none", 1, 342, "_reduce_none", 1, 332, "_reduce_none", 3, 332, "_reduce_528", 3, 332, "_reduce_529", 2, 332, "_reduce_530", 2, 332, "_reduce_531", 1, 332, "_reduce_none", 1, 332, "_reduce_none", 1, 332, "_reduce_none", 2, 332, "_reduce_535", 2, 332, "_reduce_536", 1, 349, "_reduce_none", 1, 349, "_reduce_none", 1, 349, "_reduce_none", 1, 349, "_reduce_none", 1, 349, "_reduce_none", 1, 349, "_reduce_none", 1, 349, "_reduce_none", 1, 349, "_reduce_none", 1, 349, "_reduce_545", 1, 349, "_reduce_none", 1, 327, "_reduce_547", 2, 350, "_reduce_548", 2, 350, "_reduce_549", 4, 351, "_reduce_550", 2, 333, "_reduce_551", 3, 333, "_reduce_552", 1, 333, "_reduce_553", 6, 159, "_reduce_554", 0, 159, "_reduce_555", 1, 353, "_reduce_556", 1, 353, "_reduce_none", 1, 353, "_reduce_none", 2, 354, "_reduce_559", 1, 354, "_reduce_none", 2, 161, "_reduce_561", 1, 161, "_reduce_none", 1, 244, "_reduce_none", 1, 244, "_reduce_none", 1, 245, "_reduce_565", 1, 356, "_reduce_566", 2, 356, "_reduce_567", 3, 357, "_reduce_568", 1, 357, "_reduce_569", 1, 357, "_reduce_570", 3, 246, "_reduce_571", 4, 247, "_reduce_572", 3, 248, "_reduce_573", 0, 360, "_reduce_574", 3, 360, "_reduce_575", 1, 361, "_reduce_576", 2, 361, "_reduce_577", 3, 250, "_reduce_578", 0, 363, "_reduce_579", 3, 363, "_reduce_580", 3, 249, "_reduce_581", 3, 251, "_reduce_582", 0, 364, "_reduce_583", 3, 364, "_reduce_584", 0, 365, "_reduce_585", 3, 365, "_reduce_586", 0, 345, "_reduce_587", 2, 345, "_reduce_588", 0, 358, "_reduce_589", 2, 358, "_reduce_590", 0, 359, "_reduce_591", 2, 359, "_reduce_592", 1, 362, "_reduce_593", 2, 362, "_reduce_594", 0, 367, "_reduce_595", 4, 362, "_reduce_596", 1, 366, "_reduce_597", 1, 366, "_reduce_598", 1, 366, "_reduce_599", 1, 366, "_reduce_none", 1, 224, "_reduce_none", 1, 224, "_reduce_none", 1, 368, "_reduce_603", 3, 369, "_reduce_604", 1, 355, "_reduce_605", 2, 355, "_reduce_606", 1, 227, "_reduce_607", 1, 227, "_reduce_608", 1, 227, "_reduce_609", 1, 227, "_reduce_610", 1, 352, "_reduce_611", 1, 352, "_reduce_612", 1, 352, "_reduce_613", 1, 218, "_reduce_614", 1, 218, "_reduce_615", 1, 218, "_reduce_616", 1, 218, "_reduce_617", 1, 218, "_reduce_618", 1, 219, "_reduce_619", 1, 219, "_reduce_620", 1, 219, "_reduce_621", 1, 219, "_reduce_622", 1, 219, "_reduce_623", 1, 219, "_reduce_624", 1, 219, "_reduce_625", 1, 252, "_reduce_626", 1, 252, "_reduce_627", 1, 176, "_reduce_628", 1, 176, "_reduce_629", 1, 186, "_reduce_630", 1, 186, "_reduce_631", 0, 370, "_reduce_632", 4, 263, "_reduce_633", 0, 263, "_reduce_634", 1, 182, "_reduce_none", 1, 182, "_reduce_636", 3, 371, "_reduce_637", 1, 266, "_reduce_none", 0, 373, "_reduce_639", 3, 266, "_reduce_640", 4, 372, "_reduce_641", 2, 372, "_reduce_642", 2, 372, "_reduce_643", 1, 372, "_reduce_644", 1, 372, "_reduce_645", 2, 375, "_reduce_646", 0, 375, "_reduce_647", 6, 304, "_reduce_648", 8, 304, "_reduce_649", 4, 304, "_reduce_650", 6, 304, "_reduce_651", 4, 304, "_reduce_652", 6, 304, "_reduce_653", 2, 304, "_reduce_654", 4, 304, "_reduce_655", 6, 304, "_reduce_656", 2, 304, "_reduce_657", 4, 304, "_reduce_658", 2, 304, "_reduce_659", 4, 304, "_reduce_660", 1, 304, "_reduce_661", 0, 304, "_reduce_662", 1, 239, "_reduce_663", 1, 299, "_reduce_664", 1, 299, "_reduce_665", 1, 299, "_reduce_666", 1, 299, "_reduce_667", 1, 275, "_reduce_none", 1, 275, "_reduce_669", 1, 377, "_reduce_670", 1, 378, "_reduce_671", 3, 378, "_reduce_672", 1, 291, "_reduce_673", 3, 291, "_reduce_674", 1, 379, "_reduce_675", 2, 380, "_reduce_676", 1, 380, "_reduce_677", 2, 381, "_reduce_678", 1, 381, "_reduce_679", 1, 285, "_reduce_680", 3, 285, "_reduce_681", 1, 374, "_reduce_682", 3, 374, "_reduce_683", 1, 347, "_reduce_none", 1, 347, "_reduce_none", 2, 281, "_reduce_686", 2, 280, "_reduce_687", 1, 280, "_reduce_688", 3, 382, "_reduce_689", 3, 383, "_reduce_690", 1, 292, "_reduce_691", 3, 292, "_reduce_692", 1, 376, "_reduce_693", 3, 376, "_reduce_694", 1, 384, "_reduce_none", 1, 384, "_reduce_none", 2, 293, "_reduce_697", 1, 293, "_reduce_698", 1, 385, "_reduce_none", 1, 385, "_reduce_none", 2, 287, "_reduce_701", 1, 287, "_reduce_702", 2, 286, "_reduce_703", 0, 286, "_reduce_704", 1, 197, "_reduce_none", 3, 197, "_reduce_706", 0, 253, "_reduce_707", 2, 253, "_reduce_none", 1, 237, "_reduce_709", 3, 237, "_reduce_710", 3, 386, "_reduce_711", 2, 386, "_reduce_712", 1, 386, "_reduce_713", 4, 386, "_reduce_714", 2, 386, "_reduce_715", 1, 208, "_reduce_none", 1, 208, "_reduce_none", 1, 208, "_reduce_none", 1, 202, "_reduce_none", 1, 202, "_reduce_none", 1, 202, "_reduce_none", 1, 202, "_reduce_none", 1, 310, "_reduce_none", 1, 310, "_reduce_none", 1, 310, "_reduce_none", 1, 198, "_reduce_none", 1, 198, "_reduce_none", 1, 180, "_reduce_728", 1, 180, "_reduce_729", 0, 152, "_reduce_none", 1, 152, "_reduce_none", 0, 187, "_reduce_none", 1, 187, "_reduce_none", 2, 213, "_reduce_734", 2, 179, "_reduce_735", 2, 334, "_reduce_736", 0, 236, "_reduce_none", 1, 236, "_reduce_none", 1, 236, "_reduce_none", 1, 264, "_reduce_740", 1, 264, "_reduce_none", 1, 154, "_reduce_none", 2, 154, "_reduce_none", 0, 234, "_reduce_744"];
+      racc_reduce_n = 745;
+      racc_shift_n = 1238;
       racc_token_table = $hash(false, 0, "error", 1, "kCLASS", 2, "kMODULE", 3, "kDEF", 4, "kUNDEF", 5, "kBEGIN", 6, "kRESCUE", 7, "kENSURE", 8, "kEND", 9, "kIF", 10, "kUNLESS", 11, "kTHEN", 12, "kELSIF", 13, "kELSE", 14, "kCASE", 15, "kWHEN", 16, "kWHILE", 17, "kUNTIL", 18, "kFOR", 19, "kBREAK", 20, "kNEXT", 21, "kREDO", 22, "kRETRY", 23, "kIN", 24, "kDO", 25, "kDO_COND", 26, "kDO_BLOCK", 27, "kDO_LAMBDA", 28, "kRETURN", 29, "kYIELD", 30, "kSUPER", 31, "kSELF", 32, "kNIL", 33, "kTRUE", 34, "kFALSE", 35, "kAND", 36, "kOR", 37, "kNOT", 38, "kIF_MOD", 39, "kUNLESS_MOD", 40, "kWHILE_MOD", 41, "kUNTIL_MOD", 42, "kRESCUE_MOD", 43, "kALIAS", 44, "kDEFINED", 45, "klBEGIN", 46, "klEND", 47, "k__LINE__", 48, "k__FILE__", 49, "k__ENCODING__", 50, "tIDENTIFIER", 51, "tFID", 52, "tGVAR", 53, "tIVAR", 54, "tCONSTANT", 55, "tLABEL", 56, "tCVAR", 57, "tNTH_REF", 58, "tBACK_REF", 59, "tSTRING_CONTENT", 60, "tINTEGER", 61, "tFLOAT", 62, "tUPLUS", 63, "tUMINUS", 64, "tUNARY_NUM", 65, "tPOW", 66, "tCMP", 67, "tEQ", 68, "tEQQ", 69, "tNEQ", 70, "tGEQ", 71, "tLEQ", 72, "tANDOP", 73, "tOROP", 74, "tMATCH", 75, "tNMATCH", 76, "tDOT", 77, "tDOT2", 78, "tDOT3", 79, "tAREF", 80, "tASET", 81, "tLSHFT", 82, "tRSHFT", 83, "tCOLON2", 84, "tCOLON3", 85, "tOP_ASGN", 86, "tASSOC", 87, "tLPAREN", 88, "tLPAREN2", 89, "tRPAREN", 90, "tLPAREN_ARG", 91, "tLBRACK", 92, "tLBRACK2", 93, "tRBRACK", 94, "tLBRACE", 95, "tLBRACE_ARG", 96, "tSTAR", 97, "tSTAR2", 98, "tAMPER", 99, "tAMPER2", 100, "tTILDE", 101, "tPERCENT", 102, "tDIVIDE", 103, "tDSTAR", 104, "tPLUS", 105, "tMINUS", 106, "tLT", 107, "tGT", 108, "tPIPE", 109, "tBANG", 110, "tCARET", 111, "tLCURLY", 112, "tRCURLY", 113, "tBACK_REF2", 114, "tSYMBEG", 115, "tSTRING_BEG", 116, "tXSTRING_BEG", 117, "tREGEXP_BEG", 118, "tREGEXP_OPT", 119, "tWORDS_BEG", 120, "tQWORDS_BEG", 121, "tSYMBOLS_BEG", 122, "tQSYMBOLS_BEG", 123, "tSTRING_DBEG", 124, "tSTRING_DVAR", 125, "tSTRING_END", 126, "tSTRING_DEND", 127, "tSTRING", 128, "tSYMBOL", 129, "tNL", 130, "tEH", 131, "tCOLON", 132, "tCOMMA", 133, "tSPACE", 134, "tSEMI", 135, "tLAMBDA", 136, "tLAMBEG", 137, "tCHARACTER", 138, "tRATIONAL", 139, "tIMAGINARY", 140, "tLABEL_END", 141, "tANDDOT", 142, "tBDOT2", 143, "tBDOT3", 144, "tEQL", 145, "tLOWEST", 146);
       racc_nt_base = 147;
       racc_use_result_var = true;
-      Opal.const_set($nesting[0], 'Racc_arg', [racc_action_table, racc_action_check, racc_action_default, racc_action_pointer, racc_goto_table, racc_goto_check, racc_goto_default, racc_goto_pointer, racc_nt_base, racc_reduce_table, racc_token_table, racc_shift_n, racc_reduce_n, racc_use_result_var]);
-      Opal.const_set($nesting[0], 'Racc_token_to_s_table', ["$end", "error", "kCLASS", "kMODULE", "kDEF", "kUNDEF", "kBEGIN", "kRESCUE", "kENSURE", "kEND", "kIF", "kUNLESS", "kTHEN", "kELSIF", "kELSE", "kCASE", "kWHEN", "kWHILE", "kUNTIL", "kFOR", "kBREAK", "kNEXT", "kREDO", "kRETRY", "kIN", "kDO", "kDO_COND", "kDO_BLOCK", "kDO_LAMBDA", "kRETURN", "kYIELD", "kSUPER", "kSELF", "kNIL", "kTRUE", "kFALSE", "kAND", "kOR", "kNOT", "kIF_MOD", "kUNLESS_MOD", "kWHILE_MOD", "kUNTIL_MOD", "kRESCUE_MOD", "kALIAS", "kDEFINED", "klBEGIN", "klEND", "k__LINE__", "k__FILE__", "k__ENCODING__", "tIDENTIFIER", "tFID", "tGVAR", "tIVAR", "tCONSTANT", "tLABEL", "tCVAR", "tNTH_REF", "tBACK_REF", "tSTRING_CONTENT", "tINTEGER", "tFLOAT", "tUPLUS", "tUMINUS", "tUNARY_NUM", "tPOW", "tCMP", "tEQ", "tEQQ", "tNEQ", "tGEQ", "tLEQ", "tANDOP", "tOROP", "tMATCH", "tNMATCH", "tDOT", "tDOT2", "tDOT3", "tAREF", "tASET", "tLSHFT", "tRSHFT", "tCOLON2", "tCOLON3", "tOP_ASGN", "tASSOC", "tLPAREN", "tLPAREN2", "tRPAREN", "tLPAREN_ARG", "tLBRACK", "tLBRACK2", "tRBRACK", "tLBRACE", "tLBRACE_ARG", "tSTAR", "tSTAR2", "tAMPER", "tAMPER2", "tTILDE", "tPERCENT", "tDIVIDE", "tDSTAR", "tPLUS", "tMINUS", "tLT", "tGT", "tPIPE", "tBANG", "tCARET", "tLCURLY", "tRCURLY", "tBACK_REF2", "tSYMBEG", "tSTRING_BEG", "tXSTRING_BEG", "tREGEXP_BEG", "tREGEXP_OPT", "tWORDS_BEG", "tQWORDS_BEG", "tSYMBOLS_BEG", "tQSYMBOLS_BEG", "tSTRING_DBEG", "tSTRING_DVAR", "tSTRING_END", "tSTRING_DEND", "tSTRING", "tSYMBOL", "tNL", "tEH", "tCOLON", "tCOMMA", "tSPACE", "tSEMI", "tLAMBDA", "tLAMBEG", "tCHARACTER", "tRATIONAL", "tIMAGINARY", "tLABEL_END", "tANDDOT", "tBDOT2", "tBDOT3", "tEQL", "tLOWEST", "$start", "program", "top_compstmt", "@1", "top_stmts", "opt_terms", "top_stmt", "terms", "stmt", "begin_block", "bodystmt", "compstmt", "opt_rescue", "opt_else", "opt_ensure", "stmts", "stmt_or_begin", "fitem", "undef_list", "expr_value", "command_asgn", "mlhs", "command_call", "lhs", "mrhs", "mrhs_arg", "expr", "@2", "command_rhs", "var_lhs", "primary_value", "opt_call_args", "rbracket", "call_op", "backref", "opt_nl", "arg", "p_expr", "@3", "@4", "expr_value_do", "do", "def_name", "@5", "fname", "defn_head", "k_def", "defs_head", "singleton", "dot_or_colon", "@6", "command", "block_command", "block_call", "operation2", "command_args", "cmd_brace_block", "brace_body", "fcall", "@7", "operation", "k_return", "call_args", "mlhs_basic", "mlhs_inner", "rparen", "mlhs_head", "mlhs_item", "mlhs_node", "mlhs_post", "user_variable", "keyword_variable", "cname", "cpath", "op", "reswords", "symbol", "@8", "arg_rhs", "simple_numeric", "rel_expr", "f_opt_paren_args", "primary", "relop", "arg_value", "aref_args", "none", "args", "trailer", "assocs", "paren_args", "args_forward", "opt_paren_args", "opt_block_arg", "block_arg", "@9", "literal", "strings", "xstring", "regexp", "words", "qwords", "symbols", "qsymbols", "var_ref", "assoc_list", "brace_block", "method_call", "lambda", "then", "if_tail", "case_body", "p_case_body", "for_var", "k_class", "superclass", "term", "k_module", "f_arglist", "@10", "@11", "@12", "@13", "@14", "@15", "f_marg", "f_norm_arg", "f_margs", "f_marg_list", "f_rest_marg", "f_any_kwrest", "f_kwrest", "f_no_kwarg", "block_args_tail", "f_block_kwarg", "opt_f_block_arg", "f_block_arg", "opt_block_args_tail", "excessed_comma", "block_param", "f_arg", "f_block_optarg", "f_rest_arg", "opt_block_param", "block_param_def", "opt_bv_decl", "bv_decls", "bvar", "f_bad_arg", "f_larglist", "lambda_body", "@16", "@17", "f_args", "do_block", "@18", "@19", "do_body", "@20", "operation3", "@21", "@22", "@23", "@24", "@25", "cases", "p_top_expr", "p_cases", "@26", "@27", "p_top_expr_body", "p_args", "p_find", "p_args_tail", "p_kwargs", "p_as", "p_variable", "p_alt", "p_expr_basic", "p_lparen", "p_lbracket", "p_value", "p_const", "rbrace", "@28", "@29", "p_args_head", "p_arg", "p_args_post", "p_rest", "p_kwarg", "p_any_kwrest", "p_kw", "p_kw_label", "string_contents", "p_kwrest", "kwrest_mark", "p_kwnorest", "p_primitive", "p_var_ref", "exc_list", "exc_var", "numeric", "string", "string1", "xstring_contents", "regexp_contents", "word_list", "word", "string_content", "symbol_list", "qword_list", "qsym_list", "string_dvar", "@30", "ssym", "dsym", "@31", "f_paren_args", "args_tail", "@32", "f_kwarg", "opt_args_tail", "f_optarg", "f_arg_asgn", "f_arg_item", "f_label", "f_kw", "f_block_kw", "f_opt", "f_block_opt", "restarg_mark", "blkarg_mark", "assoc"]);
-      Opal.const_set($nesting[0], 'Racc_debug_parser', false);
+      $const_set($nesting[0], 'Racc_arg', [racc_action_table, racc_action_check, racc_action_default, racc_action_pointer, racc_goto_table, racc_goto_check, racc_goto_default, racc_goto_pointer, racc_nt_base, racc_reduce_table, racc_token_table, racc_shift_n, racc_reduce_n, racc_use_result_var]);
+      $const_set($nesting[0], 'Racc_token_to_s_table', ["$end", "error", "kCLASS", "kMODULE", "kDEF", "kUNDEF", "kBEGIN", "kRESCUE", "kENSURE", "kEND", "kIF", "kUNLESS", "kTHEN", "kELSIF", "kELSE", "kCASE", "kWHEN", "kWHILE", "kUNTIL", "kFOR", "kBREAK", "kNEXT", "kREDO", "kRETRY", "kIN", "kDO", "kDO_COND", "kDO_BLOCK", "kDO_LAMBDA", "kRETURN", "kYIELD", "kSUPER", "kSELF", "kNIL", "kTRUE", "kFALSE", "kAND", "kOR", "kNOT", "kIF_MOD", "kUNLESS_MOD", "kWHILE_MOD", "kUNTIL_MOD", "kRESCUE_MOD", "kALIAS", "kDEFINED", "klBEGIN", "klEND", "k__LINE__", "k__FILE__", "k__ENCODING__", "tIDENTIFIER", "tFID", "tGVAR", "tIVAR", "tCONSTANT", "tLABEL", "tCVAR", "tNTH_REF", "tBACK_REF", "tSTRING_CONTENT", "tINTEGER", "tFLOAT", "tUPLUS", "tUMINUS", "tUNARY_NUM", "tPOW", "tCMP", "tEQ", "tEQQ", "tNEQ", "tGEQ", "tLEQ", "tANDOP", "tOROP", "tMATCH", "tNMATCH", "tDOT", "tDOT2", "tDOT3", "tAREF", "tASET", "tLSHFT", "tRSHFT", "tCOLON2", "tCOLON3", "tOP_ASGN", "tASSOC", "tLPAREN", "tLPAREN2", "tRPAREN", "tLPAREN_ARG", "tLBRACK", "tLBRACK2", "tRBRACK", "tLBRACE", "tLBRACE_ARG", "tSTAR", "tSTAR2", "tAMPER", "tAMPER2", "tTILDE", "tPERCENT", "tDIVIDE", "tDSTAR", "tPLUS", "tMINUS", "tLT", "tGT", "tPIPE", "tBANG", "tCARET", "tLCURLY", "tRCURLY", "tBACK_REF2", "tSYMBEG", "tSTRING_BEG", "tXSTRING_BEG", "tREGEXP_BEG", "tREGEXP_OPT", "tWORDS_BEG", "tQWORDS_BEG", "tSYMBOLS_BEG", "tQSYMBOLS_BEG", "tSTRING_DBEG", "tSTRING_DVAR", "tSTRING_END", "tSTRING_DEND", "tSTRING", "tSYMBOL", "tNL", "tEH", "tCOLON", "tCOMMA", "tSPACE", "tSEMI", "tLAMBDA", "tLAMBEG", "tCHARACTER", "tRATIONAL", "tIMAGINARY", "tLABEL_END", "tANDDOT", "tBDOT2", "tBDOT3", "tEQL", "tLOWEST", "$start", "program", "top_compstmt", "@1", "top_stmts", "opt_terms", "top_stmt", "terms", "stmt", "begin_block", "bodystmt", "compstmt", "opt_rescue", "opt_else", "opt_ensure", "stmts", "stmt_or_begin", "fitem", "undef_list", "expr_value", "command_asgn", "mlhs", "command_call", "lhs", "mrhs", "mrhs_arg", "expr", "@2", "command_rhs", "var_lhs", "primary_value", "opt_call_args", "rbracket", "call_op", "defn_head", "f_opt_paren_args", "command", "arg", "defs_head", "backref", "opt_nl", "p_top_expr_body", "@3", "@4", "expr_value_do", "do", "def_name", "@5", "fname", "k_def", "singleton", "dot_or_colon", "@6", "block_command", "block_call", "operation2", "command_args", "cmd_brace_block", "brace_body", "fcall", "@7", "operation", "k_return", "call_args", "mlhs_basic", "mlhs_inner", "rparen", "mlhs_head", "mlhs_item", "mlhs_node", "mlhs_post", "user_variable", "keyword_variable", "cname", "cpath", "op", "reswords", "symbol", "@8", "arg_rhs", "simple_numeric", "rel_expr", "primary", "relop", "@9", "arg_value", "aref_args", "none", "args", "trailer", "assocs", "paren_args", "args_forward", "opt_paren_args", "opt_block_arg", "block_arg", "@10", "literal", "strings", "xstring", "regexp", "words", "qwords", "symbols", "qsymbols", "var_ref", "assoc_list", "brace_block", "method_call", "lambda", "then", "if_tail", "case_body", "p_case_body", "for_var", "k_class", "superclass", "term", "k_module", "f_arglist", "@11", "@12", "@13", "@14", "@15", "@16", "@17", "f_marg", "f_norm_arg", "f_margs", "f_marg_list", "f_rest_marg", "f_any_kwrest", "f_kwrest", "f_no_kwarg", "f_eq", "block_args_tail", "@18", "f_block_kwarg", "opt_f_block_arg", "f_block_arg", "opt_block_args_tail", "excessed_comma", "block_param", "f_arg", "f_block_optarg", "f_rest_arg", "opt_block_param", "block_param_def", "opt_bv_decl", "bv_decls", "bvar", "f_bad_arg", "f_larglist", "lambda_body", "@19", "@20", "f_args", "do_block", "@21", "@22", "do_body", "@23", "operation3", "@24", "@25", "@26", "@27", "@28", "cases", "p_top_expr", "p_cases", "@29", "@30", "p_expr", "p_args", "p_find", "p_args_tail", "p_kwargs", "p_as", "p_variable", "p_alt", "p_expr_basic", "p_lparen", "p_lbracket", "p_value", "p_const", "rbrace", "@31", "@32", "p_args_head", "p_arg", "p_args_post", "p_rest", "p_kwarg", "p_any_kwrest", "p_kw", "p_kw_label", "string_contents", "p_kwrest", "kwrest_mark", "p_kwnorest", "p_primitive", "p_var_ref", "p_expr_ref", "nonlocal_var", "exc_list", "exc_var", "numeric", "string", "string1", "xstring_contents", "regexp_contents", "word_list", "word", "string_content", "symbol_list", "qword_list", "qsym_list", "string_dvar", "@33", "ssym", "dsym", "@34", "f_paren_args", "args_tail", "@35", "f_kwarg", "opt_args_tail", "f_optarg", "f_arg_asgn", "f_arg_item", "f_label", "f_kw", "f_block_kw", "f_opt", "f_block_opt", "restarg_mark", "blkarg_mark", "assoc"]);
+      $const_set($nesting[0], 'Racc_debug_parser', false);
       
-      Opal.def(self, '$_reduce_1', $Ruby30__reduce_1$16 = function $$_reduce_1(val, _values, result) {
+      $def(self, '$_reduce_1', function $$_reduce_1(val, _values, result) {
         var self = this;
 
         
         self.current_arg_stack.$push(nil);
         self.max_numparam_stack.$push($hash2(["static"], {"static": true}));
         return result;
-      }, $Ruby30__reduce_1$16.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_2', $Ruby30__reduce_2$17 = function $$_reduce_2(val, _values, result) {
+      $def(self, '$_reduce_2', function $$_reduce_2(val, _values, result) {
         var self = this;
 
         
@@ -24197,246 +20964,234 @@ Opal.modules["parser/ruby30"] = function(Opal) {
         self.current_arg_stack.$pop();
         self.max_numparam_stack.$pop();
         return result;
-      }, $Ruby30__reduce_2$17.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_3', $Ruby30__reduce_3$18 = function $$_reduce_3(val, _values, result) {
+      $def(self, '$_reduce_3', function $$_reduce_3(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$compstmt(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_3$18.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_4', $Ruby30__reduce_4$19 = function $$_reduce_4(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_4', function $$_reduce_4(val, _values, result) {
+        
         
         result = [];
         return result;
-      }, $Ruby30__reduce_4$19.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_5', $Ruby30__reduce_5$20 = function $$_reduce_5(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_5', function $$_reduce_5(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_5$20.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_6', $Ruby30__reduce_6$21 = function $$_reduce_6(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_6', function $$_reduce_6(val, _values, result) {
+        
         
         result = val['$[]'](0)['$<<'](val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_6$21.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_7', $Ruby30__reduce_7$22 = function $$_reduce_7(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_7', function $$_reduce_7(val, _values, result) {
+        
         
         result = [val['$[]'](1)];
         return result;
-      }, $Ruby30__reduce_7$22.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_9', $Ruby30__reduce_9$23 = function $$_reduce_9(val, _values, result) {
+      $def(self, '$_reduce_9', function $$_reduce_9(val, _values, result) {
         var self = this;
 
         
-        result = $send(self.builder, 'preexe', [val['$[]'](0)].concat(Opal.to_a(val['$[]'](1))));
+        result = $send(self.builder, 'preexe', [val['$[]'](0)].concat($to_a(val['$[]'](1))));
         return result;
-      }, $Ruby30__reduce_9$23.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_10', $Ruby30__reduce_10$24 = function $$_reduce_10(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_10', function $$_reduce_10(val, _values, result) {
+        
         
         result = val;
         return result;
-      }, $Ruby30__reduce_10$24.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_11', $Ruby30__reduce_11$25 = function $$_reduce_11(val, _values, result) {
-        var $a, $b, self = this, rescue_bodies = nil, else_t = nil, else_ = nil, ensure_t = nil, ensure_ = nil, $ret_or_4 = nil;
+      $def(self, '$_reduce_11', function $$_reduce_11(val, _values, result) {
+        var $a, $b, self = this, rescue_bodies = nil, else_t = nil, else_ = nil, ensure_t = nil, ensure_ = nil;
 
         
         rescue_bodies = val['$[]'](1);
-        $b = val['$[]'](2), $a = Opal.to_ary($b), (else_t = ($a[0] == null ? nil : $a[0])), (else_ = ($a[1] == null ? nil : $a[1])), $b;
-        $b = val['$[]'](3), $a = Opal.to_ary($b), (ensure_t = ($a[0] == null ? nil : $a[0])), (ensure_ = ($a[1] == null ? nil : $a[1])), $b;
-        if ($truthy((function() {if ($truthy(($ret_or_4 = rescue_bodies['$empty?']()))) {
-          return else_t['$nil?']()['$!']()
-        } else {
-          return $ret_or_4
-        }; return nil; })())) {
-          self.$diagnostic("error", "useless_else", nil, else_t)};
+        $b = val['$[]'](2), $a = $to_ary($b), (else_t = ($a[0] == null ? nil : $a[0])), (else_ = ($a[1] == null ? nil : $a[1])), $b;
+        $b = val['$[]'](3), $a = $to_ary($b), (ensure_t = ($a[0] == null ? nil : $a[0])), (ensure_ = ($a[1] == null ? nil : $a[1])), $b;
+        if (($truthy(rescue_bodies['$empty?']()) && ($not(else_t['$nil?']())))) {
+          self.$diagnostic("error", "useless_else", nil, else_t)
+        };
         result = self.builder.$begin_body(val['$[]'](0), rescue_bodies, else_t, else_, ensure_t, ensure_);
         return result;
-      }, $Ruby30__reduce_11$25.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_12', $Ruby30__reduce_12$26 = function $$_reduce_12(val, _values, result) {
+      $def(self, '$_reduce_12', function $$_reduce_12(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$compstmt(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_12$26.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_13', $Ruby30__reduce_13$27 = function $$_reduce_13(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_13', function $$_reduce_13(val, _values, result) {
+        
         
         result = [];
         return result;
-      }, $Ruby30__reduce_13$27.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_14', $Ruby30__reduce_14$28 = function $$_reduce_14(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_14', function $$_reduce_14(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_14$28.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_15', $Ruby30__reduce_15$29 = function $$_reduce_15(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_15', function $$_reduce_15(val, _values, result) {
+        
         
         result = val['$[]'](0)['$<<'](val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_15$29.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_16', $Ruby30__reduce_16$30 = function $$_reduce_16(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_16', function $$_reduce_16(val, _values, result) {
+        
         
         result = [val['$[]'](1)];
         return result;
-      }, $Ruby30__reduce_16$30.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_18', $Ruby30__reduce_18$31 = function $$_reduce_18(val, _values, result) {
+      $def(self, '$_reduce_18', function $$_reduce_18(val, _values, result) {
         var self = this;
 
         
         self.$diagnostic("error", "begin_in_method", nil, val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_18$31.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_19', $Ruby30__reduce_19$32 = function $$_reduce_19(val, _values, result) {
+      $def(self, '$_reduce_19', function $$_reduce_19(val, _values, result) {
         var self = this, $writer = nil;
 
         
         
         $writer = ["expr_fname"];
-        $send(self.lexer, 'state=', Opal.to_a($writer));
+        $send(self.lexer, 'state=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_19$32.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_20', $Ruby30__reduce_20$33 = function $$_reduce_20(val, _values, result) {
+      $def(self, '$_reduce_20', function $$_reduce_20(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$alias(val['$[]'](0), val['$[]'](1), val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_20$33.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_21', $Ruby30__reduce_21$34 = function $$_reduce_21(val, _values, result) {
+      $def(self, '$_reduce_21', function $$_reduce_21(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$alias(val['$[]'](0), self.builder.$gvar(val['$[]'](1)), self.builder.$gvar(val['$[]'](2)));
         return result;
-      }, $Ruby30__reduce_21$34.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_22', $Ruby30__reduce_22$35 = function $$_reduce_22(val, _values, result) {
+      $def(self, '$_reduce_22', function $$_reduce_22(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$alias(val['$[]'](0), self.builder.$gvar(val['$[]'](1)), self.builder.$back_ref(val['$[]'](2)));
         return result;
-      }, $Ruby30__reduce_22$35.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_23', $Ruby30__reduce_23$36 = function $$_reduce_23(val, _values, result) {
+      $def(self, '$_reduce_23', function $$_reduce_23(val, _values, result) {
         var self = this;
 
         
         self.$diagnostic("error", "nth_ref_alias", nil, val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_23$36.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_24', $Ruby30__reduce_24$37 = function $$_reduce_24(val, _values, result) {
+      $def(self, '$_reduce_24', function $$_reduce_24(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$undef_method(val['$[]'](0), val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_24$37.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_25', $Ruby30__reduce_25$38 = function $$_reduce_25(val, _values, result) {
+      $def(self, '$_reduce_25', function $$_reduce_25(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$condition_mod(val['$[]'](0), nil, val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_25$38.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_26', $Ruby30__reduce_26$39 = function $$_reduce_26(val, _values, result) {
+      $def(self, '$_reduce_26', function $$_reduce_26(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$condition_mod(nil, val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_26$39.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_27', $Ruby30__reduce_27$40 = function $$_reduce_27(val, _values, result) {
+      $def(self, '$_reduce_27', function $$_reduce_27(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$loop_mod("while", val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_27$40.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_28', $Ruby30__reduce_28$41 = function $$_reduce_28(val, _values, result) {
+      $def(self, '$_reduce_28', function $$_reduce_28(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$loop_mod("until", val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_28$41.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_29', $Ruby30__reduce_29$42 = function $$_reduce_29(val, _values, result) {
+      $def(self, '$_reduce_29', function $$_reduce_29(val, _values, result) {
         var self = this, rescue_body = nil;
 
         
         rescue_body = self.builder.$rescue_body(val['$[]'](1), nil, nil, nil, nil, val['$[]'](2));
         result = self.builder.$begin_body(val['$[]'](0), [rescue_body]);
         return result;
-      }, $Ruby30__reduce_29$42.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_30', $Ruby30__reduce_30$43 = function $$_reduce_30(val, _values, result) {
+      $def(self, '$_reduce_30', function $$_reduce_30(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$postexe(val['$[]'](0), val['$[]'](1), val['$[]'](2), val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_30$43.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_32', $Ruby30__reduce_32$44 = function $$_reduce_32(val, _values, result) {
+      $def(self, '$_reduce_32', function $$_reduce_32(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$multi_assign(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_32$44.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_33', $Ruby30__reduce_33$45 = function $$_reduce_33(val, _values, result) {
+      $def(self, '$_reduce_33', function $$_reduce_33(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$assign(val['$[]'](0), val['$[]'](1), self.builder.$array(nil, val['$[]'](2), nil));
         return result;
-      }, $Ruby30__reduce_33$45.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_34', $Ruby30__reduce_34$46 = function $$_reduce_34(val, _values, result) {
+      $def(self, '$_reduce_34', function $$_reduce_34(val, _values, result) {
         var self = this, rescue_body = nil, begin_body = nil;
 
         
@@ -24444,208 +21199,276 @@ Opal.modules["parser/ruby30"] = function(Opal) {
         begin_body = self.builder.$begin_body(val['$[]'](2), [rescue_body]);
         result = self.builder.$multi_assign(val['$[]'](0), val['$[]'](1), begin_body);
         return result;
-      }, $Ruby30__reduce_34$46.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_35', $Ruby30__reduce_35$47 = function $$_reduce_35(val, _values, result) {
+      $def(self, '$_reduce_35', function $$_reduce_35(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$multi_assign(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_35$47.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_37', $Ruby30__reduce_37$48 = function $$_reduce_37(val, _values, result) {
+      $def(self, '$_reduce_37', function $$_reduce_37(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$assign(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_37$48.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_38', $Ruby30__reduce_38$49 = function $$_reduce_38(val, _values, result) {
+      $def(self, '$_reduce_38', function $$_reduce_38(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$op_assign(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_38$49.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_39', $Ruby30__reduce_39$50 = function $$_reduce_39(val, _values, result) {
+      $def(self, '$_reduce_39', function $$_reduce_39(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$op_assign(self.builder.$index(val['$[]'](0), val['$[]'](1), val['$[]'](2), val['$[]'](3)), val['$[]'](4), val['$[]'](5));
         return result;
-      }, $Ruby30__reduce_39$50.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_40', $Ruby30__reduce_40$51 = function $$_reduce_40(val, _values, result) {
+      $def(self, '$_reduce_40', function $$_reduce_40(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$op_assign(self.builder.$call_method(val['$[]'](0), val['$[]'](1), val['$[]'](2)), val['$[]'](3), val['$[]'](4));
         return result;
-      }, $Ruby30__reduce_40$51.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_41', $Ruby30__reduce_41$52 = function $$_reduce_41(val, _values, result) {
+      $def(self, '$_reduce_41', function $$_reduce_41(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$op_assign(self.builder.$call_method(val['$[]'](0), val['$[]'](1), val['$[]'](2)), val['$[]'](3), val['$[]'](4));
         return result;
-      }, $Ruby30__reduce_41$52.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_42', $Ruby30__reduce_42$53 = function $$_reduce_42(val, _values, result) {
+      $def(self, '$_reduce_42', function $$_reduce_42(val, _values, result) {
         var self = this, const$ = nil;
 
         
         const$ = self.builder.$const_op_assignable(self.builder.$const_fetch(val['$[]'](0), val['$[]'](1), val['$[]'](2)));
         result = self.builder.$op_assign(const$, val['$[]'](3), val['$[]'](4));
         return result;
-      }, $Ruby30__reduce_42$53.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_43', $Ruby30__reduce_43$54 = function $$_reduce_43(val, _values, result) {
+      $def(self, '$_reduce_43', function $$_reduce_43(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$op_assign(self.builder.$call_method(val['$[]'](0), val['$[]'](1), val['$[]'](2)), val['$[]'](3), val['$[]'](4));
         return result;
-      }, $Ruby30__reduce_43$54.$$arity = 3);
+      }, 3);
+      
+      $def(self, '$_reduce_44', function $$_reduce_44(val, _values, result) {
+        var $a, $b, $c, self = this, def_t = nil, name_t = nil, ctx = nil, $writer = nil;
+
+        
+        $b = val['$[]'](0), $a = $to_ary($b), (def_t = ($a[0] == null ? nil : $a[0])), ($c = $to_ary(($a[1] == null ? nil : $a[1])), (name_t = ($c[0] == null ? nil : $c[0])), (ctx = ($c[1] == null ? nil : $c[1]))), $b;
+        self.$endless_method_name(name_t);
+        result = self.builder.$def_endless_method(def_t, name_t, val['$[]'](1), val['$[]'](2), val['$[]'](3));
+        self.$local_pop();
+        self.current_arg_stack.$pop();
+        
+        $writer = [ctx.$in_def()];
+        $send(self.context, 'in_def=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
+        return result;
+      }, 3);
+      
+      $def(self, '$_reduce_45', function $$_reduce_45(val, _values, result) {
+        var $a, $b, $c, self = this, def_t = nil, name_t = nil, ctx = nil, rescue_body = nil, method_body = nil, $writer = nil;
+
+        
+        $b = val['$[]'](0), $a = $to_ary($b), (def_t = ($a[0] == null ? nil : $a[0])), ($c = $to_ary(($a[1] == null ? nil : $a[1])), (name_t = ($c[0] == null ? nil : $c[0])), (ctx = ($c[1] == null ? nil : $c[1]))), $b;
+        self.$endless_method_name(name_t);
+        rescue_body = self.builder.$rescue_body(val['$[]'](4), nil, nil, nil, nil, val['$[]'](5));
+        method_body = self.builder.$begin_body(val['$[]'](3), [rescue_body]);
+        result = self.builder.$def_endless_method(def_t, name_t, val['$[]'](1), val['$[]'](2), method_body);
+        self.$local_pop();
+        self.current_arg_stack.$pop();
+        
+        $writer = [ctx.$in_def()];
+        $send(self.context, 'in_def=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
+        return result;
+      }, 3);
+      
+      $def(self, '$_reduce_46', function $$_reduce_46(val, _values, result) {
+        var $a, $b, $c, self = this, def_t = nil, recv = nil, dot_t = nil, name_t = nil, ctx = nil, $writer = nil;
+
+        
+        $b = val['$[]'](0), $a = $to_ary($b), (def_t = ($a[0] == null ? nil : $a[0])), (recv = ($a[1] == null ? nil : $a[1])), (dot_t = ($a[2] == null ? nil : $a[2])), ($c = $to_ary(($a[3] == null ? nil : $a[3])), (name_t = ($c[0] == null ? nil : $c[0])), (ctx = ($c[1] == null ? nil : $c[1]))), $b;
+        self.$endless_method_name(name_t);
+        result = self.builder.$def_endless_singleton(def_t, recv, dot_t, name_t, val['$[]'](1), val['$[]'](2), val['$[]'](3));
+        self.$local_pop();
+        self.current_arg_stack.$pop();
+        
+        $writer = [ctx.$in_def()];
+        $send(self.context, 'in_def=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
+        return result;
+      }, 3);
+      
+      $def(self, '$_reduce_47', function $$_reduce_47(val, _values, result) {
+        var $a, $b, $c, self = this, def_t = nil, recv = nil, dot_t = nil, name_t = nil, ctx = nil, rescue_body = nil, method_body = nil, $writer = nil;
+
+        
+        $b = val['$[]'](0), $a = $to_ary($b), (def_t = ($a[0] == null ? nil : $a[0])), (recv = ($a[1] == null ? nil : $a[1])), (dot_t = ($a[2] == null ? nil : $a[2])), ($c = $to_ary(($a[3] == null ? nil : $a[3])), (name_t = ($c[0] == null ? nil : $c[0])), (ctx = ($c[1] == null ? nil : $c[1]))), $b;
+        self.$endless_method_name(name_t);
+        rescue_body = self.builder.$rescue_body(val['$[]'](4), nil, nil, nil, nil, val['$[]'](5));
+        method_body = self.builder.$begin_body(val['$[]'](3), [rescue_body]);
+        result = self.builder.$def_endless_singleton(def_t, recv, dot_t, name_t, val['$[]'](1), val['$[]'](2), method_body);
+        self.$local_pop();
+        self.current_arg_stack.$pop();
+        
+        $writer = [ctx.$in_def()];
+        $send(self.context, 'in_def=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
+        return result;
+      }, 3);
       
-      Opal.def(self, '$_reduce_44', $Ruby30__reduce_44$55 = function $$_reduce_44(val, _values, result) {
+      $def(self, '$_reduce_48', function $$_reduce_48(val, _values, result) {
         var self = this;
 
         
         self.builder.$op_assign(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_44$55.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_46', $Ruby30__reduce_46$56 = function $$_reduce_46(val, _values, result) {
+      $def(self, '$_reduce_50', function $$_reduce_50(val, _values, result) {
         var self = this, rescue_body = nil;
 
         
         rescue_body = self.builder.$rescue_body(val['$[]'](1), nil, nil, nil, nil, val['$[]'](2));
         result = self.builder.$begin_body(val['$[]'](0), [rescue_body]);
         return result;
-      }, $Ruby30__reduce_46$56.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_49', $Ruby30__reduce_49$57 = function $$_reduce_49(val, _values, result) {
+      $def(self, '$_reduce_53', function $$_reduce_53(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$logical_op("and", val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_49$57.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_50', $Ruby30__reduce_50$58 = function $$_reduce_50(val, _values, result) {
+      $def(self, '$_reduce_54', function $$_reduce_54(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$logical_op("or", val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_50$58.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_51', $Ruby30__reduce_51$59 = function $$_reduce_51(val, _values, result) {
+      $def(self, '$_reduce_55', function $$_reduce_55(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$not_op(val['$[]'](0), nil, val['$[]'](2), nil);
         return result;
-      }, $Ruby30__reduce_51$59.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_52', $Ruby30__reduce_52$60 = function $$_reduce_52(val, _values, result) {
+      $def(self, '$_reduce_56', function $$_reduce_56(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$not_op(val['$[]'](0), nil, val['$[]'](1), nil);
         return result;
-      }, $Ruby30__reduce_52$60.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_53', $Ruby30__reduce_53$61 = function $$_reduce_53(val, _values, result) {
+      $def(self, '$_reduce_57', function $$_reduce_57(val, _values, result) {
         var self = this, $writer = nil;
 
         
         
         $writer = ["expr_beg"];
-        $send(self.lexer, 'state=', Opal.to_a($writer));
+        $send(self.lexer, 'state=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         
         $writer = [false];
-        $send(self.lexer, 'command_start=', Opal.to_a($writer));
+        $send(self.lexer, 'command_start=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         self.pattern_variables.$push();
         result = self.context.$in_kwarg();
         
         $writer = [true];
-        $send(self.context, 'in_kwarg=', Opal.to_a($writer));
+        $send(self.context, 'in_kwarg=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_53$61.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_54', $Ruby30__reduce_54$62 = function $$_reduce_54(val, _values, result) {
+      $def(self, '$_reduce_58', function $$_reduce_58(val, _values, result) {
         var self = this, $writer = nil;
 
         
         self.pattern_variables.$pop();
         
         $writer = [val['$[]'](2)];
-        $send(self.context, 'in_kwarg=', Opal.to_a($writer));
+        $send(self.context, 'in_kwarg=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         result = self.builder.$match_pattern(val['$[]'](0), val['$[]'](1), val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_54$62.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_55', $Ruby30__reduce_55$63 = function $$_reduce_55(val, _values, result) {
+      $def(self, '$_reduce_59', function $$_reduce_59(val, _values, result) {
         var self = this, $writer = nil;
 
         
         
         $writer = ["expr_beg"];
-        $send(self.lexer, 'state=', Opal.to_a($writer));
+        $send(self.lexer, 'state=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         
         $writer = [false];
-        $send(self.lexer, 'command_start=', Opal.to_a($writer));
+        $send(self.lexer, 'command_start=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         self.pattern_variables.$push();
         result = self.context.$in_kwarg();
         
         $writer = [true];
-        $send(self.context, 'in_kwarg=', Opal.to_a($writer));
+        $send(self.context, 'in_kwarg=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_55$63.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_56', $Ruby30__reduce_56$64 = function $$_reduce_56(val, _values, result) {
+      $def(self, '$_reduce_60', function $$_reduce_60(val, _values, result) {
         var self = this, $writer = nil;
 
         
         self.pattern_variables.$pop();
         
         $writer = [val['$[]'](2)];
-        $send(self.context, 'in_kwarg=', Opal.to_a($writer));
+        $send(self.context, 'in_kwarg=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         result = self.builder.$match_pattern_p(val['$[]'](0), val['$[]'](1), val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_56$64.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_59', $Ruby30__reduce_59$65 = function $$_reduce_59(val, _values, result) {
+      $def(self, '$_reduce_63', function $$_reduce_63(val, _values, result) {
         var self = this;
 
         
         self.lexer.$cond().$push(true);
         return result;
-      }, $Ruby30__reduce_59$65.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_60', $Ruby30__reduce_60$66 = function $$_reduce_60(val, _values, result) {
+      $def(self, '$_reduce_64', function $$_reduce_64(val, _values, result) {
         var self = this;
 
         
         self.lexer.$cond().$pop();
         result = [val['$[]'](1), val['$[]'](2)];
         return result;
-      }, $Ruby30__reduce_60$66.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_61', $Ruby30__reduce_61$67 = function $$_reduce_61(val, _values, result) {
+      $def(self, '$_reduce_65', function $$_reduce_65(val, _values, result) {
         var self = this, $writer = nil;
 
         
@@ -24654,1052 +21477,1057 @@ Opal.modules["parser/ruby30"] = function(Opal) {
         result = [val['$[]'](0), self.context.$dup()];
         
         $writer = [true];
-        $send(self.context, 'in_def=', Opal.to_a($writer));
+        $send(self.context, 'in_def=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_61$67.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_62', $Ruby30__reduce_62$68 = function $$_reduce_62(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_66', function $$_reduce_66(val, _values, result) {
+        
         
         result = [val['$[]'](0), val['$[]'](1)];
         return result;
-      }, $Ruby30__reduce_62$68.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_63', $Ruby30__reduce_63$69 = function $$_reduce_63(val, _values, result) {
+      $def(self, '$_reduce_67', function $$_reduce_67(val, _values, result) {
         var self = this, $writer = nil;
 
         
         
         $writer = ["expr_fname"];
-        $send(self.lexer, 'state=', Opal.to_a($writer));
+        $send(self.lexer, 'state=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
+        
+        $writer = [true];
+        $send(self.context, 'in_argdef=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_63$69.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_64', $Ruby30__reduce_64$70 = function $$_reduce_64(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_68', function $$_reduce_68(val, _values, result) {
+        
         
         result = [val['$[]'](0), val['$[]'](1), val['$[]'](2), val['$[]'](4)];
         return result;
-      }, $Ruby30__reduce_64$70.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_68', $Ruby30__reduce_68$71 = function $$_reduce_68(val, _values, result) {
+      $def(self, '$_reduce_72', function $$_reduce_72(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$call_method(val['$[]'](0), val['$[]'](1), val['$[]'](2), nil, val['$[]'](3), nil);
         return result;
-      }, $Ruby30__reduce_68$71.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_69', $Ruby30__reduce_69$72 = function $$_reduce_69(val, _values, result) {
+      $def(self, '$_reduce_73', function $$_reduce_73(val, _values, result) {
         var self = this, $writer = nil;
 
         
         result = self.context.$dup();
         
         $writer = [true];
-        $send(self.context, 'in_block=', Opal.to_a($writer));
+        $send(self.context, 'in_block=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_69$72.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_70', $Ruby30__reduce_70$73 = function $$_reduce_70(val, _values, result) {
+      $def(self, '$_reduce_74', function $$_reduce_74(val, _values, result) {
         var self = this, $writer = nil;
 
         
-        result = [val['$[]'](0)].concat(Opal.to_a(val['$[]'](2))).concat([val['$[]'](3)]);
         
         $writer = [val['$[]'](1).$in_block()];
-        $send(self.context, 'in_block=', Opal.to_a($writer));
+        $send(self.context, 'in_block=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
+        result = [val['$[]'](0)].concat($to_a(val['$[]'](2))).concat([val['$[]'](3)]);
         return result;
-      }, $Ruby30__reduce_70$73.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_72', $Ruby30__reduce_72$74 = function $$_reduce_72(val, _values, result) {
+      $def(self, '$_reduce_76', function $$_reduce_76(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$call_method(nil, nil, val['$[]'](0), nil, val['$[]'](1), nil);
         return result;
-      }, $Ruby30__reduce_72$74.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_73', $Ruby30__reduce_73$75 = function $$_reduce_73(val, _values, result) {
+      $def(self, '$_reduce_77', function $$_reduce_77(val, _values, result) {
         var $a, $b, self = this, method_call = nil, begin_t = nil, args = nil, body = nil, end_t = nil;
 
         
         method_call = self.builder.$call_method(nil, nil, val['$[]'](0), nil, val['$[]'](1), nil);
-        $b = val['$[]'](2), $a = Opal.to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), (end_t = ($a[3] == null ? nil : $a[3])), $b;
+        $b = val['$[]'](2), $a = $to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), (end_t = ($a[3] == null ? nil : $a[3])), $b;
         result = self.builder.$block(method_call, begin_t, args, body, end_t);
         return result;
-      }, $Ruby30__reduce_73$75.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_74', $Ruby30__reduce_74$76 = function $$_reduce_74(val, _values, result) {
+      $def(self, '$_reduce_78', function $$_reduce_78(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$call_method(val['$[]'](0), val['$[]'](1), val['$[]'](2), nil, val['$[]'](3), nil);
         return result;
-      }, $Ruby30__reduce_74$76.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_75', $Ruby30__reduce_75$77 = function $$_reduce_75(val, _values, result) {
+      $def(self, '$_reduce_79', function $$_reduce_79(val, _values, result) {
         var $a, $b, self = this, method_call = nil, begin_t = nil, args = nil, body = nil, end_t = nil;
 
         
         method_call = self.builder.$call_method(val['$[]'](0), val['$[]'](1), val['$[]'](2), nil, val['$[]'](3), nil);
-        $b = val['$[]'](4), $a = Opal.to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), (end_t = ($a[3] == null ? nil : $a[3])), $b;
+        $b = val['$[]'](4), $a = $to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), (end_t = ($a[3] == null ? nil : $a[3])), $b;
         result = self.builder.$block(method_call, begin_t, args, body, end_t);
         return result;
-      }, $Ruby30__reduce_75$77.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_76', $Ruby30__reduce_76$78 = function $$_reduce_76(val, _values, result) {
+      $def(self, '$_reduce_80', function $$_reduce_80(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$call_method(val['$[]'](0), val['$[]'](1), val['$[]'](2), nil, val['$[]'](3), nil);
         return result;
-      }, $Ruby30__reduce_76$78.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_77', $Ruby30__reduce_77$79 = function $$_reduce_77(val, _values, result) {
+      $def(self, '$_reduce_81', function $$_reduce_81(val, _values, result) {
         var $a, $b, self = this, method_call = nil, begin_t = nil, args = nil, body = nil, end_t = nil;
 
         
         method_call = self.builder.$call_method(val['$[]'](0), val['$[]'](1), val['$[]'](2), nil, val['$[]'](3), nil);
-        $b = val['$[]'](4), $a = Opal.to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), (end_t = ($a[3] == null ? nil : $a[3])), $b;
+        $b = val['$[]'](4), $a = $to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), (end_t = ($a[3] == null ? nil : $a[3])), $b;
         result = self.builder.$block(method_call, begin_t, args, body, end_t);
         return result;
-      }, $Ruby30__reduce_77$79.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_78', $Ruby30__reduce_78$80 = function $$_reduce_78(val, _values, result) {
+      $def(self, '$_reduce_82', function $$_reduce_82(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$keyword_cmd("super", val['$[]'](0), nil, val['$[]'](1), nil);
         return result;
-      }, $Ruby30__reduce_78$80.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_79', $Ruby30__reduce_79$81 = function $$_reduce_79(val, _values, result) {
+      $def(self, '$_reduce_83', function $$_reduce_83(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$keyword_cmd("yield", val['$[]'](0), nil, val['$[]'](1), nil);
         return result;
-      }, $Ruby30__reduce_79$81.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_80', $Ruby30__reduce_80$82 = function $$_reduce_80(val, _values, result) {
+      $def(self, '$_reduce_84', function $$_reduce_84(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$keyword_cmd("return", val['$[]'](0), nil, val['$[]'](1), nil);
         return result;
-      }, $Ruby30__reduce_80$82.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_81', $Ruby30__reduce_81$83 = function $$_reduce_81(val, _values, result) {
+      $def(self, '$_reduce_85', function $$_reduce_85(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$keyword_cmd("break", val['$[]'](0), nil, val['$[]'](1), nil);
         return result;
-      }, $Ruby30__reduce_81$83.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_82', $Ruby30__reduce_82$84 = function $$_reduce_82(val, _values, result) {
+      $def(self, '$_reduce_86', function $$_reduce_86(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$keyword_cmd("next", val['$[]'](0), nil, val['$[]'](1), nil);
         return result;
-      }, $Ruby30__reduce_82$84.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_83', $Ruby30__reduce_83$85 = function $$_reduce_83(val, _values, result) {
+      $def(self, '$_reduce_87', function $$_reduce_87(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$multi_lhs(nil, val['$[]'](0), nil);
         return result;
-      }, $Ruby30__reduce_83$85.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_84', $Ruby30__reduce_84$86 = function $$_reduce_84(val, _values, result) {
+      $def(self, '$_reduce_88', function $$_reduce_88(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$begin(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_84$86.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_85', $Ruby30__reduce_85$87 = function $$_reduce_85(val, _values, result) {
+      $def(self, '$_reduce_89', function $$_reduce_89(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$multi_lhs(nil, val['$[]'](0), nil);
         return result;
-      }, $Ruby30__reduce_85$87.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_86', $Ruby30__reduce_86$88 = function $$_reduce_86(val, _values, result) {
+      $def(self, '$_reduce_90', function $$_reduce_90(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$multi_lhs(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_86$88.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_88', $Ruby30__reduce_88$89 = function $$_reduce_88(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_92', function $$_reduce_92(val, _values, result) {
+        
         
         result = val['$[]'](0).$push(val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_88$89.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_89', $Ruby30__reduce_89$90 = function $$_reduce_89(val, _values, result) {
+      $def(self, '$_reduce_93', function $$_reduce_93(val, _values, result) {
         var self = this;
 
         
         result = val['$[]'](0).$push(self.builder.$splat(val['$[]'](1), val['$[]'](2)));
         return result;
-      }, $Ruby30__reduce_89$90.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_90', $Ruby30__reduce_90$91 = function $$_reduce_90(val, _values, result) {
+      $def(self, '$_reduce_94', function $$_reduce_94(val, _values, result) {
         var self = this;
 
         
         result = val['$[]'](0).$push(self.builder.$splat(val['$[]'](1), val['$[]'](2))).$concat(val['$[]'](4));
         return result;
-      }, $Ruby30__reduce_90$91.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_91', $Ruby30__reduce_91$92 = function $$_reduce_91(val, _values, result) {
+      $def(self, '$_reduce_95', function $$_reduce_95(val, _values, result) {
         var self = this;
 
         
         result = val['$[]'](0).$push(self.builder.$splat(val['$[]'](1)));
         return result;
-      }, $Ruby30__reduce_91$92.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_92', $Ruby30__reduce_92$93 = function $$_reduce_92(val, _values, result) {
+      $def(self, '$_reduce_96', function $$_reduce_96(val, _values, result) {
         var self = this;
 
         
         result = val['$[]'](0).$push(self.builder.$splat(val['$[]'](1))).$concat(val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_92$93.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_93', $Ruby30__reduce_93$94 = function $$_reduce_93(val, _values, result) {
+      $def(self, '$_reduce_97', function $$_reduce_97(val, _values, result) {
         var self = this;
 
         
         result = [self.builder.$splat(val['$[]'](0), val['$[]'](1))];
         return result;
-      }, $Ruby30__reduce_93$94.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_94', $Ruby30__reduce_94$95 = function $$_reduce_94(val, _values, result) {
+      $def(self, '$_reduce_98', function $$_reduce_98(val, _values, result) {
         var self = this;
 
         
-        result = [self.builder.$splat(val['$[]'](0), val['$[]'](1))].concat(Opal.to_a(val['$[]'](3)));
+        result = [self.builder.$splat(val['$[]'](0), val['$[]'](1))].concat($to_a(val['$[]'](3)));
         return result;
-      }, $Ruby30__reduce_94$95.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_95', $Ruby30__reduce_95$96 = function $$_reduce_95(val, _values, result) {
+      $def(self, '$_reduce_99', function $$_reduce_99(val, _values, result) {
         var self = this;
 
         
         result = [self.builder.$splat(val['$[]'](0))];
         return result;
-      }, $Ruby30__reduce_95$96.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_96', $Ruby30__reduce_96$97 = function $$_reduce_96(val, _values, result) {
+      $def(self, '$_reduce_100', function $$_reduce_100(val, _values, result) {
         var self = this;
 
         
-        result = [self.builder.$splat(val['$[]'](0))].concat(Opal.to_a(val['$[]'](2)));
+        result = [self.builder.$splat(val['$[]'](0))].concat($to_a(val['$[]'](2)));
         return result;
-      }, $Ruby30__reduce_96$97.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_98', $Ruby30__reduce_98$98 = function $$_reduce_98(val, _values, result) {
+      $def(self, '$_reduce_102', function $$_reduce_102(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$begin(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_98$98.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_99', $Ruby30__reduce_99$99 = function $$_reduce_99(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_103', function $$_reduce_103(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_99$99.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_100', $Ruby30__reduce_100$100 = function $$_reduce_100(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_104', function $$_reduce_104(val, _values, result) {
+        
         
         result = val['$[]'](0)['$<<'](val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_100$100.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_101', $Ruby30__reduce_101$101 = function $$_reduce_101(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_105', function $$_reduce_105(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_101$101.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_102', $Ruby30__reduce_102$102 = function $$_reduce_102(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_106', function $$_reduce_106(val, _values, result) {
+        
         
         result = val['$[]'](0)['$<<'](val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_102$102.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_103', $Ruby30__reduce_103$103 = function $$_reduce_103(val, _values, result) {
+      $def(self, '$_reduce_107', function $$_reduce_107(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$assignable(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_103$103.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_104', $Ruby30__reduce_104$104 = function $$_reduce_104(val, _values, result) {
+      $def(self, '$_reduce_108', function $$_reduce_108(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$assignable(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_104$104.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_105', $Ruby30__reduce_105$105 = function $$_reduce_105(val, _values, result) {
+      $def(self, '$_reduce_109', function $$_reduce_109(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$index_asgn(val['$[]'](0), val['$[]'](1), val['$[]'](2), val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_105$105.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_106', $Ruby30__reduce_106$106 = function $$_reduce_106(val, _values, result) {
+      $def(self, '$_reduce_110', function $$_reduce_110(val, _values, result) {
         var self = this;
 
         
-        if ($truthy(val['$[]'](1)['$[]'](0)['$==']("anddot"))) {
-          self.$diagnostic("error", "csend_in_lhs_of_masgn", nil, val['$[]'](1))};
+        if ($eqeq(val['$[]'](1)['$[]'](0), "anddot")) {
+          self.$diagnostic("error", "csend_in_lhs_of_masgn", nil, val['$[]'](1))
+        };
         result = self.builder.$attr_asgn(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_106$106.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_107', $Ruby30__reduce_107$107 = function $$_reduce_107(val, _values, result) {
+      $def(self, '$_reduce_111', function $$_reduce_111(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$attr_asgn(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_107$107.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_108', $Ruby30__reduce_108$108 = function $$_reduce_108(val, _values, result) {
+      $def(self, '$_reduce_112', function $$_reduce_112(val, _values, result) {
         var self = this;
 
         
-        if ($truthy(val['$[]'](1)['$[]'](0)['$==']("anddot"))) {
-          self.$diagnostic("error", "csend_in_lhs_of_masgn", nil, val['$[]'](1))};
+        if ($eqeq(val['$[]'](1)['$[]'](0), "anddot")) {
+          self.$diagnostic("error", "csend_in_lhs_of_masgn", nil, val['$[]'](1))
+        };
         result = self.builder.$attr_asgn(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_108$108.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_109', $Ruby30__reduce_109$109 = function $$_reduce_109(val, _values, result) {
+      $def(self, '$_reduce_113', function $$_reduce_113(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$assignable(self.builder.$const_fetch(val['$[]'](0), val['$[]'](1), val['$[]'](2)));
         return result;
-      }, $Ruby30__reduce_109$109.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_110', $Ruby30__reduce_110$110 = function $$_reduce_110(val, _values, result) {
+      $def(self, '$_reduce_114', function $$_reduce_114(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$assignable(self.builder.$const_global(val['$[]'](0), val['$[]'](1)));
         return result;
-      }, $Ruby30__reduce_110$110.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_111', $Ruby30__reduce_111$111 = function $$_reduce_111(val, _values, result) {
+      $def(self, '$_reduce_115', function $$_reduce_115(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$assignable(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_111$111.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_112', $Ruby30__reduce_112$112 = function $$_reduce_112(val, _values, result) {
+      $def(self, '$_reduce_116', function $$_reduce_116(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$assignable(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_112$112.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_113', $Ruby30__reduce_113$113 = function $$_reduce_113(val, _values, result) {
+      $def(self, '$_reduce_117', function $$_reduce_117(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$assignable(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_113$113.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_114', $Ruby30__reduce_114$114 = function $$_reduce_114(val, _values, result) {
+      $def(self, '$_reduce_118', function $$_reduce_118(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$index_asgn(val['$[]'](0), val['$[]'](1), val['$[]'](2), val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_114$114.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_115', $Ruby30__reduce_115$115 = function $$_reduce_115(val, _values, result) {
+      $def(self, '$_reduce_119', function $$_reduce_119(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$attr_asgn(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_115$115.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_116', $Ruby30__reduce_116$116 = function $$_reduce_116(val, _values, result) {
+      $def(self, '$_reduce_120', function $$_reduce_120(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$attr_asgn(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_116$116.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_117', $Ruby30__reduce_117$117 = function $$_reduce_117(val, _values, result) {
+      $def(self, '$_reduce_121', function $$_reduce_121(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$attr_asgn(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_117$117.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_118', $Ruby30__reduce_118$118 = function $$_reduce_118(val, _values, result) {
+      $def(self, '$_reduce_122', function $$_reduce_122(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$assignable(self.builder.$const_fetch(val['$[]'](0), val['$[]'](1), val['$[]'](2)));
         return result;
-      }, $Ruby30__reduce_118$118.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_119', $Ruby30__reduce_119$119 = function $$_reduce_119(val, _values, result) {
+      $def(self, '$_reduce_123', function $$_reduce_123(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$assignable(self.builder.$const_global(val['$[]'](0), val['$[]'](1)));
         return result;
-      }, $Ruby30__reduce_119$119.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_120', $Ruby30__reduce_120$120 = function $$_reduce_120(val, _values, result) {
+      $def(self, '$_reduce_124', function $$_reduce_124(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$assignable(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_120$120.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_121', $Ruby30__reduce_121$121 = function $$_reduce_121(val, _values, result) {
+      $def(self, '$_reduce_125', function $$_reduce_125(val, _values, result) {
         var self = this;
 
         
         self.$diagnostic("error", "module_name_const", nil, val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_121$121.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_123', $Ruby30__reduce_123$122 = function $$_reduce_123(val, _values, result) {
+      $def(self, '$_reduce_127', function $$_reduce_127(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$const_global(val['$[]'](0), val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_123$122.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_124', $Ruby30__reduce_124$123 = function $$_reduce_124(val, _values, result) {
+      $def(self, '$_reduce_128', function $$_reduce_128(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$const(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_124$123.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_125', $Ruby30__reduce_125$124 = function $$_reduce_125(val, _values, result) {
+      $def(self, '$_reduce_129', function $$_reduce_129(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$const_fetch(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_125$124.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_131', $Ruby30__reduce_131$125 = function $$_reduce_131(val, _values, result) {
+      $def(self, '$_reduce_135', function $$_reduce_135(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$symbol_internal(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_131$125.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_133', $Ruby30__reduce_133$126 = function $$_reduce_133(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_137', function $$_reduce_137(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_133$126.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_134', $Ruby30__reduce_134$127 = function $$_reduce_134(val, _values, result) {
+      $def(self, '$_reduce_138', function $$_reduce_138(val, _values, result) {
         var self = this, $writer = nil;
 
         
         
         $writer = ["expr_fname"];
-        $send(self.lexer, 'state=', Opal.to_a($writer));
+        $send(self.lexer, 'state=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_134$127.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_135', $Ruby30__reduce_135$128 = function $$_reduce_135(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_139', function $$_reduce_139(val, _values, result) {
+        
         
         result = val['$[]'](0)['$<<'](val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_135$128.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_207', $Ruby30__reduce_207$129 = function $$_reduce_207(val, _values, result) {
+      $def(self, '$_reduce_211', function $$_reduce_211(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$assign(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_207$129.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_208', $Ruby30__reduce_208$130 = function $$_reduce_208(val, _values, result) {
+      $def(self, '$_reduce_212', function $$_reduce_212(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$op_assign(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_208$130.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_209', $Ruby30__reduce_209$131 = function $$_reduce_209(val, _values, result) {
+      $def(self, '$_reduce_213', function $$_reduce_213(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$op_assign(self.builder.$index(val['$[]'](0), val['$[]'](1), val['$[]'](2), val['$[]'](3)), val['$[]'](4), val['$[]'](5));
         return result;
-      }, $Ruby30__reduce_209$131.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_210', $Ruby30__reduce_210$132 = function $$_reduce_210(val, _values, result) {
+      $def(self, '$_reduce_214', function $$_reduce_214(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$op_assign(self.builder.$call_method(val['$[]'](0), val['$[]'](1), val['$[]'](2)), val['$[]'](3), val['$[]'](4));
         return result;
-      }, $Ruby30__reduce_210$132.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_211', $Ruby30__reduce_211$133 = function $$_reduce_211(val, _values, result) {
+      $def(self, '$_reduce_215', function $$_reduce_215(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$op_assign(self.builder.$call_method(val['$[]'](0), val['$[]'](1), val['$[]'](2)), val['$[]'](3), val['$[]'](4));
         return result;
-      }, $Ruby30__reduce_211$133.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_212', $Ruby30__reduce_212$134 = function $$_reduce_212(val, _values, result) {
+      $def(self, '$_reduce_216', function $$_reduce_216(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$op_assign(self.builder.$call_method(val['$[]'](0), val['$[]'](1), val['$[]'](2)), val['$[]'](3), val['$[]'](4));
         return result;
-      }, $Ruby30__reduce_212$134.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_213', $Ruby30__reduce_213$135 = function $$_reduce_213(val, _values, result) {
+      $def(self, '$_reduce_217', function $$_reduce_217(val, _values, result) {
         var self = this, const$ = nil;
 
         
         const$ = self.builder.$const_op_assignable(self.builder.$const_fetch(val['$[]'](0), val['$[]'](1), val['$[]'](2)));
         result = self.builder.$op_assign(const$, val['$[]'](3), val['$[]'](4));
         return result;
-      }, $Ruby30__reduce_213$135.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_214', $Ruby30__reduce_214$136 = function $$_reduce_214(val, _values, result) {
+      $def(self, '$_reduce_218', function $$_reduce_218(val, _values, result) {
         var self = this, const$ = nil;
 
         
         const$ = self.builder.$const_op_assignable(self.builder.$const_global(val['$[]'](0), val['$[]'](1)));
         result = self.builder.$op_assign(const$, val['$[]'](2), val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_214$136.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_215', $Ruby30__reduce_215$137 = function $$_reduce_215(val, _values, result) {
+      $def(self, '$_reduce_219', function $$_reduce_219(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$op_assign(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_215$137.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_216', $Ruby30__reduce_216$138 = function $$_reduce_216(val, _values, result) {
+      $def(self, '$_reduce_220', function $$_reduce_220(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$range_inclusive(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_216$138.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_217', $Ruby30__reduce_217$139 = function $$_reduce_217(val, _values, result) {
+      $def(self, '$_reduce_221', function $$_reduce_221(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$range_exclusive(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_217$139.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_218', $Ruby30__reduce_218$140 = function $$_reduce_218(val, _values, result) {
+      $def(self, '$_reduce_222', function $$_reduce_222(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$range_inclusive(val['$[]'](0), val['$[]'](1), nil);
         return result;
-      }, $Ruby30__reduce_218$140.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_219', $Ruby30__reduce_219$141 = function $$_reduce_219(val, _values, result) {
+      $def(self, '$_reduce_223', function $$_reduce_223(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$range_exclusive(val['$[]'](0), val['$[]'](1), nil);
         return result;
-      }, $Ruby30__reduce_219$141.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_220', $Ruby30__reduce_220$142 = function $$_reduce_220(val, _values, result) {
+      $def(self, '$_reduce_224', function $$_reduce_224(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$range_inclusive(nil, val['$[]'](0), val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_220$142.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_221', $Ruby30__reduce_221$143 = function $$_reduce_221(val, _values, result) {
+      $def(self, '$_reduce_225', function $$_reduce_225(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$range_exclusive(nil, val['$[]'](0), val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_221$143.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_222', $Ruby30__reduce_222$144 = function $$_reduce_222(val, _values, result) {
+      $def(self, '$_reduce_226', function $$_reduce_226(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$binary_op(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_222$144.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_223', $Ruby30__reduce_223$145 = function $$_reduce_223(val, _values, result) {
+      $def(self, '$_reduce_227', function $$_reduce_227(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$binary_op(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_223$145.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_224', $Ruby30__reduce_224$146 = function $$_reduce_224(val, _values, result) {
+      $def(self, '$_reduce_228', function $$_reduce_228(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$binary_op(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_224$146.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_225', $Ruby30__reduce_225$147 = function $$_reduce_225(val, _values, result) {
+      $def(self, '$_reduce_229', function $$_reduce_229(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$binary_op(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_225$147.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_226', $Ruby30__reduce_226$148 = function $$_reduce_226(val, _values, result) {
+      $def(self, '$_reduce_230', function $$_reduce_230(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$binary_op(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_226$148.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_227', $Ruby30__reduce_227$149 = function $$_reduce_227(val, _values, result) {
+      $def(self, '$_reduce_231', function $$_reduce_231(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$binary_op(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_227$149.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_228', $Ruby30__reduce_228$150 = function $$_reduce_228(val, _values, result) {
+      $def(self, '$_reduce_232', function $$_reduce_232(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$unary_op(val['$[]'](0), self.builder.$binary_op(val['$[]'](1), val['$[]'](2), val['$[]'](3)));
         return result;
-      }, $Ruby30__reduce_228$150.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_229', $Ruby30__reduce_229$151 = function $$_reduce_229(val, _values, result) {
+      $def(self, '$_reduce_233', function $$_reduce_233(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$unary_op(val['$[]'](0), val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_229$151.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_230', $Ruby30__reduce_230$152 = function $$_reduce_230(val, _values, result) {
+      $def(self, '$_reduce_234', function $$_reduce_234(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$unary_op(val['$[]'](0), val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_230$152.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_231', $Ruby30__reduce_231$153 = function $$_reduce_231(val, _values, result) {
+      $def(self, '$_reduce_235', function $$_reduce_235(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$binary_op(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_231$153.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_232', $Ruby30__reduce_232$154 = function $$_reduce_232(val, _values, result) {
+      $def(self, '$_reduce_236', function $$_reduce_236(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$binary_op(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_232$154.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_233', $Ruby30__reduce_233$155 = function $$_reduce_233(val, _values, result) {
+      $def(self, '$_reduce_237', function $$_reduce_237(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$binary_op(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_233$155.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_234', $Ruby30__reduce_234$156 = function $$_reduce_234(val, _values, result) {
+      $def(self, '$_reduce_238', function $$_reduce_238(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$binary_op(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_234$156.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_236', $Ruby30__reduce_236$157 = function $$_reduce_236(val, _values, result) {
+      $def(self, '$_reduce_240', function $$_reduce_240(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$binary_op(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_236$157.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_237', $Ruby30__reduce_237$158 = function $$_reduce_237(val, _values, result) {
+      $def(self, '$_reduce_241', function $$_reduce_241(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$binary_op(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_237$158.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_238', $Ruby30__reduce_238$159 = function $$_reduce_238(val, _values, result) {
+      $def(self, '$_reduce_242', function $$_reduce_242(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$binary_op(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_238$159.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_239', $Ruby30__reduce_239$160 = function $$_reduce_239(val, _values, result) {
+      $def(self, '$_reduce_243', function $$_reduce_243(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$match_op(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_239$160.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_240', $Ruby30__reduce_240$161 = function $$_reduce_240(val, _values, result) {
+      $def(self, '$_reduce_244', function $$_reduce_244(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$binary_op(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_240$161.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_241', $Ruby30__reduce_241$162 = function $$_reduce_241(val, _values, result) {
+      $def(self, '$_reduce_245', function $$_reduce_245(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$not_op(val['$[]'](0), nil, val['$[]'](1), nil);
         return result;
-      }, $Ruby30__reduce_241$162.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_242', $Ruby30__reduce_242$163 = function $$_reduce_242(val, _values, result) {
+      $def(self, '$_reduce_246', function $$_reduce_246(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$unary_op(val['$[]'](0), val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_242$163.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_243', $Ruby30__reduce_243$164 = function $$_reduce_243(val, _values, result) {
+      $def(self, '$_reduce_247', function $$_reduce_247(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$binary_op(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_243$164.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_244', $Ruby30__reduce_244$165 = function $$_reduce_244(val, _values, result) {
+      $def(self, '$_reduce_248', function $$_reduce_248(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$binary_op(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_244$165.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_245', $Ruby30__reduce_245$166 = function $$_reduce_245(val, _values, result) {
+      $def(self, '$_reduce_249', function $$_reduce_249(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$logical_op("and", val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_245$166.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_246', $Ruby30__reduce_246$167 = function $$_reduce_246(val, _values, result) {
+      $def(self, '$_reduce_250', function $$_reduce_250(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$logical_op("or", val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_246$167.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_247', $Ruby30__reduce_247$168 = function $$_reduce_247(val, _values, result) {
-        var self = this;
+      $def(self, '$_reduce_251', function $$_reduce_251(val, _values, result) {
+        var self = this, $writer = nil;
+
+        
+        
+        $writer = [true];
+        $send(self.context, 'in_defined=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
+        return result;
+      }, 3);
+      
+      $def(self, '$_reduce_252', function $$_reduce_252(val, _values, result) {
+        var self = this, $writer = nil;
 
         
-        result = self.builder.$keyword_cmd("defined?", val['$[]'](0), nil, [val['$[]'](2)], nil);
+        
+        $writer = [false];
+        $send(self.context, 'in_defined=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
+        result = self.builder.$keyword_cmd("defined?", val['$[]'](0), nil, [val['$[]'](3)], nil);
         return result;
-      }, $Ruby30__reduce_247$168.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_248', $Ruby30__reduce_248$169 = function $$_reduce_248(val, _values, result) {
+      $def(self, '$_reduce_253', function $$_reduce_253(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$ternary(val['$[]'](0), val['$[]'](1), val['$[]'](2), val['$[]'](4), val['$[]'](5));
         return result;
-      }, $Ruby30__reduce_248$169.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_249', $Ruby30__reduce_249$170 = function $$_reduce_249(val, _values, result) {
+      $def(self, '$_reduce_254', function $$_reduce_254(val, _values, result) {
         var $a, $b, $c, self = this, def_t = nil, name_t = nil, ctx = nil, $writer = nil;
 
         
-        $b = val['$[]'](0), $a = Opal.to_ary($b), (def_t = ($a[0] == null ? nil : $a[0])), ($c = Opal.to_ary(($a[1] == null ? nil : $a[1])), (name_t = ($c[0] == null ? nil : $c[0])), (ctx = ($c[1] == null ? nil : $c[1]))), $b;
+        $b = val['$[]'](0), $a = $to_ary($b), (def_t = ($a[0] == null ? nil : $a[0])), ($c = $to_ary(($a[1] == null ? nil : $a[1])), (name_t = ($c[0] == null ? nil : $c[0])), (ctx = ($c[1] == null ? nil : $c[1]))), $b;
         self.$endless_method_name(name_t);
         result = self.builder.$def_endless_method(def_t, name_t, val['$[]'](1), val['$[]'](2), val['$[]'](3));
         self.$local_pop();
+        self.current_arg_stack.$pop();
         
         $writer = [ctx.$in_def()];
-        $send(self.context, 'in_def=', Opal.to_a($writer));
+        $send(self.context, 'in_def=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
-        self.current_arg_stack.$pop();
         return result;
-      }, $Ruby30__reduce_249$170.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_250', $Ruby30__reduce_250$171 = function $$_reduce_250(val, _values, result) {
+      $def(self, '$_reduce_255', function $$_reduce_255(val, _values, result) {
         var $a, $b, $c, self = this, def_t = nil, name_t = nil, ctx = nil, rescue_body = nil, method_body = nil, $writer = nil;
 
         
-        $b = val['$[]'](0), $a = Opal.to_ary($b), (def_t = ($a[0] == null ? nil : $a[0])), ($c = Opal.to_ary(($a[1] == null ? nil : $a[1])), (name_t = ($c[0] == null ? nil : $c[0])), (ctx = ($c[1] == null ? nil : $c[1]))), $b;
+        $b = val['$[]'](0), $a = $to_ary($b), (def_t = ($a[0] == null ? nil : $a[0])), ($c = $to_ary(($a[1] == null ? nil : $a[1])), (name_t = ($c[0] == null ? nil : $c[0])), (ctx = ($c[1] == null ? nil : $c[1]))), $b;
         self.$endless_method_name(name_t);
         rescue_body = self.builder.$rescue_body(val['$[]'](4), nil, nil, nil, nil, val['$[]'](5));
         method_body = self.builder.$begin_body(val['$[]'](3), [rescue_body]);
         result = self.builder.$def_endless_method(def_t, name_t, val['$[]'](1), val['$[]'](2), method_body);
         self.$local_pop();
+        self.current_arg_stack.$pop();
         
         $writer = [ctx.$in_def()];
-        $send(self.context, 'in_def=', Opal.to_a($writer));
+        $send(self.context, 'in_def=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
-        self.current_arg_stack.$pop();
         return result;
-      }, $Ruby30__reduce_250$171.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_251', $Ruby30__reduce_251$172 = function $$_reduce_251(val, _values, result) {
+      $def(self, '$_reduce_256', function $$_reduce_256(val, _values, result) {
         var $a, $b, $c, self = this, def_t = nil, recv = nil, dot_t = nil, name_t = nil, ctx = nil, $writer = nil;
 
         
-        $b = val['$[]'](0), $a = Opal.to_ary($b), (def_t = ($a[0] == null ? nil : $a[0])), (recv = ($a[1] == null ? nil : $a[1])), (dot_t = ($a[2] == null ? nil : $a[2])), ($c = Opal.to_ary(($a[3] == null ? nil : $a[3])), (name_t = ($c[0] == null ? nil : $c[0])), (ctx = ($c[1] == null ? nil : $c[1]))), $b;
+        $b = val['$[]'](0), $a = $to_ary($b), (def_t = ($a[0] == null ? nil : $a[0])), (recv = ($a[1] == null ? nil : $a[1])), (dot_t = ($a[2] == null ? nil : $a[2])), ($c = $to_ary(($a[3] == null ? nil : $a[3])), (name_t = ($c[0] == null ? nil : $c[0])), (ctx = ($c[1] == null ? nil : $c[1]))), $b;
         self.$endless_method_name(name_t);
         result = self.builder.$def_endless_singleton(def_t, recv, dot_t, name_t, val['$[]'](1), val['$[]'](2), val['$[]'](3));
         self.$local_pop();
+        self.current_arg_stack.$pop();
         
         $writer = [ctx.$in_def()];
-        $send(self.context, 'in_def=', Opal.to_a($writer));
+        $send(self.context, 'in_def=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
-        self.current_arg_stack.$pop();
         return result;
-      }, $Ruby30__reduce_251$172.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_252', $Ruby30__reduce_252$173 = function $$_reduce_252(val, _values, result) {
+      $def(self, '$_reduce_257', function $$_reduce_257(val, _values, result) {
         var $a, $b, $c, self = this, def_t = nil, recv = nil, dot_t = nil, name_t = nil, ctx = nil, rescue_body = nil, method_body = nil, $writer = nil;
 
         
-        $b = val['$[]'](0), $a = Opal.to_ary($b), (def_t = ($a[0] == null ? nil : $a[0])), (recv = ($a[1] == null ? nil : $a[1])), (dot_t = ($a[2] == null ? nil : $a[2])), ($c = Opal.to_ary(($a[3] == null ? nil : $a[3])), (name_t = ($c[0] == null ? nil : $c[0])), (ctx = ($c[1] == null ? nil : $c[1]))), $b;
+        $b = val['$[]'](0), $a = $to_ary($b), (def_t = ($a[0] == null ? nil : $a[0])), (recv = ($a[1] == null ? nil : $a[1])), (dot_t = ($a[2] == null ? nil : $a[2])), ($c = $to_ary(($a[3] == null ? nil : $a[3])), (name_t = ($c[0] == null ? nil : $c[0])), (ctx = ($c[1] == null ? nil : $c[1]))), $b;
         self.$endless_method_name(name_t);
         rescue_body = self.builder.$rescue_body(val['$[]'](4), nil, nil, nil, nil, val['$[]'](5));
         method_body = self.builder.$begin_body(val['$[]'](3), [rescue_body]);
         result = self.builder.$def_endless_singleton(def_t, recv, dot_t, name_t, val['$[]'](1), val['$[]'](2), method_body);
         self.$local_pop();
+        self.current_arg_stack.$pop();
         
         $writer = [ctx.$in_def()];
-        $send(self.context, 'in_def=', Opal.to_a($writer));
+        $send(self.context, 'in_def=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
-        self.current_arg_stack.$pop();
         return result;
-      }, $Ruby30__reduce_252$173.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_258', $Ruby30__reduce_258$174 = function $$_reduce_258(val, _values, result) {
+      $def(self, '$_reduce_263', function $$_reduce_263(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$binary_op(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_258$174.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_259', $Ruby30__reduce_259$175 = function $$_reduce_259(val, _values, result) {
+      $def(self, '$_reduce_264', function $$_reduce_264(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$binary_op(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_259$175.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_263', $Ruby30__reduce_263$176 = function $$_reduce_263(val, _values, result) {
+      $def(self, '$_reduce_268', function $$_reduce_268(val, _values, result) {
         var self = this;
 
         
         result = val['$[]'](0)['$<<'](self.builder.$associate(nil, val['$[]'](2), nil));
         return result;
-      }, $Ruby30__reduce_263$176.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_264', $Ruby30__reduce_264$177 = function $$_reduce_264(val, _values, result) {
+      $def(self, '$_reduce_269', function $$_reduce_269(val, _values, result) {
         var self = this;
 
         
         result = [self.builder.$associate(nil, val['$[]'](0), nil)];
         return result;
-      }, $Ruby30__reduce_264$177.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_266', $Ruby30__reduce_266$178 = function $$_reduce_266(val, _values, result) {
+      $def(self, '$_reduce_271', function $$_reduce_271(val, _values, result) {
         var self = this, rescue_body = nil;
 
         
         rescue_body = self.builder.$rescue_body(val['$[]'](1), nil, nil, nil, nil, val['$[]'](2));
         result = self.builder.$begin_body(val['$[]'](0), [rescue_body]);
         return result;
-      }, $Ruby30__reduce_266$178.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_267', $Ruby30__reduce_267$179 = function $$_reduce_267(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_272', function $$_reduce_272(val, _values, result) {
+        
         
         result = val;
         return result;
-      }, $Ruby30__reduce_267$179.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_268', $Ruby30__reduce_268$180 = function $$_reduce_268(val, _values, result) {
+      $def(self, '$_reduce_273', function $$_reduce_273(val, _values, result) {
         var self = this;
 
         
-        if ($truthy(self.static_env['$declared_forward_args?']())) {
-        } else {
+        if (!$truthy(self.static_env['$declared_forward_args?']())) {
           self.$diagnostic("error", "unexpected_token", $hash2(["token"], {"token": "tBDOT3"}), val['$[]'](3))
         };
-        result = [val['$[]'](0), [].concat(Opal.to_a(val['$[]'](1))).concat([self.builder.$forwarded_args(val['$[]'](3))]), val['$[]'](4)];
+        result = [val['$[]'](0), [].concat($to_a(val['$[]'](1))).concat([self.builder.$forwarded_args(val['$[]'](3))]), val['$[]'](4)];
         return result;
-      }, $Ruby30__reduce_268$180.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_269', $Ruby30__reduce_269$181 = function $$_reduce_269(val, _values, result) {
+      $def(self, '$_reduce_274', function $$_reduce_274(val, _values, result) {
         var self = this;
 
         
-        if ($truthy(self.static_env['$declared_forward_args?']())) {
-        } else {
+        if (!$truthy(self.static_env['$declared_forward_args?']())) {
           self.$diagnostic("error", "unexpected_token", $hash2(["token"], {"token": "tBDOT3"}), val['$[]'](1))
         };
         result = [val['$[]'](0), [self.builder.$forwarded_args(val['$[]'](1))], val['$[]'](2)];
         return result;
-      }, $Ruby30__reduce_269$181.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_270', $Ruby30__reduce_270$182 = function $$_reduce_270(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_275', function $$_reduce_275(val, _values, result) {
+        
         
         result = [nil, [], nil];
         return result;
-      }, $Ruby30__reduce_270$182.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_272', $Ruby30__reduce_272$183 = function $$_reduce_272(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_277', function $$_reduce_277(val, _values, result) {
+        
         
         result = [];
         return result;
-      }, $Ruby30__reduce_272$183.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_275', $Ruby30__reduce_275$184 = function $$_reduce_275(val, _values, result) {
+      $def(self, '$_reduce_280', function $$_reduce_280(val, _values, result) {
         var self = this;
 
         
         result = val['$[]'](0)['$<<'](self.builder.$associate(nil, val['$[]'](2), nil));
         return result;
-      }, $Ruby30__reduce_275$184.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_276', $Ruby30__reduce_276$185 = function $$_reduce_276(val, _values, result) {
+      $def(self, '$_reduce_281', function $$_reduce_281(val, _values, result) {
         var self = this;
 
         
         result = [self.builder.$associate(nil, val['$[]'](0), nil)];
         return result;
-      }, $Ruby30__reduce_276$185.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_277', $Ruby30__reduce_277$186 = function $$_reduce_277(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_282', function $$_reduce_282(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_277$186.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_278', $Ruby30__reduce_278$187 = function $$_reduce_278(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_283', function $$_reduce_283(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_278$187.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_279', $Ruby30__reduce_279$188 = function $$_reduce_279(val, _values, result) {
+      $def(self, '$_reduce_284', function $$_reduce_284(val, _values, result) {
         var self = this;
 
         
         result = [self.builder.$associate(nil, val['$[]'](0), nil)];
         result.$concat(val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_279$188.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_280', $Ruby30__reduce_280$189 = function $$_reduce_280(val, _values, result) {
+      $def(self, '$_reduce_285', function $$_reduce_285(val, _values, result) {
         var self = this, assocs = nil;
 
         
@@ -25707,26 +22535,21 @@ Opal.modules["parser/ruby30"] = function(Opal) {
         result = val['$[]'](0)['$<<'](assocs);
         result.$concat(val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_280$189.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_281', $Ruby30__reduce_281$190 = function $$_reduce_281(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_286', function $$_reduce_286(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_281$190.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_282', $Ruby30__reduce_282$191 = function $$_reduce_282(val, _values, result) {
-        var self = this, last_token = nil, lookahead = nil, $ret_or_5 = nil, top = nil;
+      $def(self, '$_reduce_287', function $$_reduce_287(val, _values, result) {
+        var self = this, last_token = nil, lookahead = nil, $ret_or_1 = nil, top = nil;
 
         
         last_token = self.last_token['$[]'](0);
-        lookahead = (function() {if ($truthy(($ret_or_5 = last_token['$==']("tLBRACK")))) {
-          return $ret_or_5
-        } else {
-          return last_token['$==']("tLPAREN_ARG")
-        }; return nil; })();
+        lookahead = ($truthy(($ret_or_1 = last_token['$==']("tLBRACK"))) ? ($ret_or_1) : (last_token['$==']("tLPAREN_ARG")));
         if ($truthy(lookahead)) {
           
           top = self.lexer.$cmdarg().$pop();
@@ -25736,9 +22559,9 @@ Opal.modules["parser/ruby30"] = function(Opal) {
           self.lexer.$cmdarg().$push(true)
         };
         return result;
-      }, $Ruby30__reduce_282$191.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_283', $Ruby30__reduce_283$192 = function $$_reduce_283(val, _values, result) {
+      $def(self, '$_reduce_288', function $$_reduce_288(val, _values, result) {
         var self = this, last_token = nil, lookahead = nil, top = nil;
 
         
@@ -25754,887 +22577,895 @@ Opal.modules["parser/ruby30"] = function(Opal) {
         };
         result = val['$[]'](1);
         return result;
-      }, $Ruby30__reduce_283$192.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_284', $Ruby30__reduce_284$193 = function $$_reduce_284(val, _values, result) {
+      $def(self, '$_reduce_289', function $$_reduce_289(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$block_pass(val['$[]'](0), val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_284$193.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_285', $Ruby30__reduce_285$194 = function $$_reduce_285(val, _values, result) {
+      $def(self, '$_reduce_290', function $$_reduce_290(val, _values, result) {
         var self = this;
 
         
+        if ($not(self.static_env['$declared_anonymous_blockarg?']())) {
+          self.$diagnostic("error", "no_anonymous_blockarg", nil, val['$[]'](0))
+        };
+        result = self.builder.$block_pass(val['$[]'](0), nil);
+        return result;
+      }, 3);
+      
+      $def(self, '$_reduce_291', function $$_reduce_291(val, _values, result) {
+        
+        
         result = [val['$[]'](1)];
         return result;
-      }, $Ruby30__reduce_285$194.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_286', $Ruby30__reduce_286$195 = function $$_reduce_286(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_292', function $$_reduce_292(val, _values, result) {
+        
         
         result = [];
         return result;
-      }, $Ruby30__reduce_286$195.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_287', $Ruby30__reduce_287$196 = function $$_reduce_287(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_293', function $$_reduce_293(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_287$196.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_288', $Ruby30__reduce_288$197 = function $$_reduce_288(val, _values, result) {
+      $def(self, '$_reduce_294', function $$_reduce_294(val, _values, result) {
         var self = this;
 
         
         result = [self.builder.$splat(val['$[]'](0), val['$[]'](1))];
         return result;
-      }, $Ruby30__reduce_288$197.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_289', $Ruby30__reduce_289$198 = function $$_reduce_289(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_295', function $$_reduce_295(val, _values, result) {
+        
         
         result = val['$[]'](0)['$<<'](val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_289$198.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_290', $Ruby30__reduce_290$199 = function $$_reduce_290(val, _values, result) {
+      $def(self, '$_reduce_296', function $$_reduce_296(val, _values, result) {
         var self = this;
 
         
         result = val['$[]'](0)['$<<'](self.builder.$splat(val['$[]'](2), val['$[]'](3)));
         return result;
-      }, $Ruby30__reduce_290$199.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_291', $Ruby30__reduce_291$200 = function $$_reduce_291(val, _values, result) {
+      $def(self, '$_reduce_297', function $$_reduce_297(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$array(nil, val['$[]'](0), nil);
         return result;
-      }, $Ruby30__reduce_291$200.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_293', $Ruby30__reduce_293$201 = function $$_reduce_293(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_299', function $$_reduce_299(val, _values, result) {
+        
         
         result = val['$[]'](0)['$<<'](val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_293$201.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_294', $Ruby30__reduce_294$202 = function $$_reduce_294(val, _values, result) {
+      $def(self, '$_reduce_300', function $$_reduce_300(val, _values, result) {
         var self = this;
 
         
         result = val['$[]'](0)['$<<'](self.builder.$splat(val['$[]'](2), val['$[]'](3)));
         return result;
-      }, $Ruby30__reduce_294$202.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_295', $Ruby30__reduce_295$203 = function $$_reduce_295(val, _values, result) {
+      $def(self, '$_reduce_301', function $$_reduce_301(val, _values, result) {
         var self = this;
 
         
         result = [self.builder.$splat(val['$[]'](0), val['$[]'](1))];
         return result;
-      }, $Ruby30__reduce_295$203.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_306', $Ruby30__reduce_306$204 = function $$_reduce_306(val, _values, result) {
+      $def(self, '$_reduce_312', function $$_reduce_312(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$call_method(nil, nil, val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_306$204.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_307', $Ruby30__reduce_307$205 = function $$_reduce_307(val, _values, result) {
+      $def(self, '$_reduce_313', function $$_reduce_313(val, _values, result) {
         var self = this;
 
         
         self.lexer.$cmdarg().$push(false);
         return result;
-      }, $Ruby30__reduce_307$205.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_308', $Ruby30__reduce_308$206 = function $$_reduce_308(val, _values, result) {
+      $def(self, '$_reduce_314', function $$_reduce_314(val, _values, result) {
         var self = this;
 
         
         self.lexer.$cmdarg().$pop();
         result = self.builder.$begin_keyword(val['$[]'](0), val['$[]'](2), val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_308$206.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_309', $Ruby30__reduce_309$207 = function $$_reduce_309(val, _values, result) {
+      $def(self, '$_reduce_315', function $$_reduce_315(val, _values, result) {
         var self = this, $writer = nil;
 
         
         
         $writer = ["expr_endarg"];
-        $send(self.lexer, 'state=', Opal.to_a($writer));
+        $send(self.lexer, 'state=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_309$207.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_310', $Ruby30__reduce_310$208 = function $$_reduce_310(val, _values, result) {
+      $def(self, '$_reduce_316', function $$_reduce_316(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$begin(val['$[]'](0), val['$[]'](1), val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_310$208.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_311', $Ruby30__reduce_311$209 = function $$_reduce_311(val, _values, result) {
+      $def(self, '$_reduce_317', function $$_reduce_317(val, _values, result) {
         var self = this, $writer = nil;
 
         
         
         $writer = ["expr_endarg"];
-        $send(self.lexer, 'state=', Opal.to_a($writer));
+        $send(self.lexer, 'state=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_311$209.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_312', $Ruby30__reduce_312$210 = function $$_reduce_312(val, _values, result) {
+      $def(self, '$_reduce_318', function $$_reduce_318(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$begin(val['$[]'](0), nil, val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_312$210.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_313', $Ruby30__reduce_313$211 = function $$_reduce_313(val, _values, result) {
+      $def(self, '$_reduce_319', function $$_reduce_319(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$begin(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_313$211.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_314', $Ruby30__reduce_314$212 = function $$_reduce_314(val, _values, result) {
+      $def(self, '$_reduce_320', function $$_reduce_320(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$const_fetch(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_314$212.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_315', $Ruby30__reduce_315$213 = function $$_reduce_315(val, _values, result) {
+      $def(self, '$_reduce_321', function $$_reduce_321(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$const_global(val['$[]'](0), val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_315$213.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_316', $Ruby30__reduce_316$214 = function $$_reduce_316(val, _values, result) {
+      $def(self, '$_reduce_322', function $$_reduce_322(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$array(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_316$214.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_317', $Ruby30__reduce_317$215 = function $$_reduce_317(val, _values, result) {
+      $def(self, '$_reduce_323', function $$_reduce_323(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$associate(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_317$215.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_318', $Ruby30__reduce_318$216 = function $$_reduce_318(val, _values, result) {
+      $def(self, '$_reduce_324', function $$_reduce_324(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$keyword_cmd("return", val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_318$216.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_319', $Ruby30__reduce_319$217 = function $$_reduce_319(val, _values, result) {
+      $def(self, '$_reduce_325', function $$_reduce_325(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$keyword_cmd("yield", val['$[]'](0), val['$[]'](1), val['$[]'](2), val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_319$217.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_320', $Ruby30__reduce_320$218 = function $$_reduce_320(val, _values, result) {
+      $def(self, '$_reduce_326', function $$_reduce_326(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$keyword_cmd("yield", val['$[]'](0), val['$[]'](1), [], val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_320$218.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_321', $Ruby30__reduce_321$219 = function $$_reduce_321(val, _values, result) {
+      $def(self, '$_reduce_327', function $$_reduce_327(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$keyword_cmd("yield", val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_321$219.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_322', $Ruby30__reduce_322$220 = function $$_reduce_322(val, _values, result) {
-        var self = this;
+      $def(self, '$_reduce_328', function $$_reduce_328(val, _values, result) {
+        var self = this, $writer = nil;
 
         
-        result = self.builder.$keyword_cmd("defined?", val['$[]'](0), val['$[]'](2), [val['$[]'](3)], val['$[]'](4));
+        
+        $writer = [true];
+        $send(self.context, 'in_defined=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
+        return result;
+      }, 3);
+      
+      $def(self, '$_reduce_329', function $$_reduce_329(val, _values, result) {
+        var self = this, $writer = nil;
+
+        
+        
+        $writer = [false];
+        $send(self.context, 'in_defined=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
+        result = self.builder.$keyword_cmd("defined?", val['$[]'](0), val['$[]'](2), [val['$[]'](4)], val['$[]'](5));
         return result;
-      }, $Ruby30__reduce_322$220.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_323', $Ruby30__reduce_323$221 = function $$_reduce_323(val, _values, result) {
+      $def(self, '$_reduce_330', function $$_reduce_330(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$not_op(val['$[]'](0), val['$[]'](1), val['$[]'](2), val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_323$221.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_324', $Ruby30__reduce_324$222 = function $$_reduce_324(val, _values, result) {
+      $def(self, '$_reduce_331', function $$_reduce_331(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$not_op(val['$[]'](0), val['$[]'](1), nil, val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_324$222.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_325', $Ruby30__reduce_325$223 = function $$_reduce_325(val, _values, result) {
+      $def(self, '$_reduce_332', function $$_reduce_332(val, _values, result) {
         var $a, $b, self = this, method_call = nil, begin_t = nil, args = nil, body = nil, end_t = nil;
 
         
         method_call = self.builder.$call_method(nil, nil, val['$[]'](0));
-        $b = val['$[]'](1), $a = Opal.to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), (end_t = ($a[3] == null ? nil : $a[3])), $b;
+        $b = val['$[]'](1), $a = $to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), (end_t = ($a[3] == null ? nil : $a[3])), $b;
         result = self.builder.$block(method_call, begin_t, args, body, end_t);
         return result;
-      }, $Ruby30__reduce_325$223.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_327', $Ruby30__reduce_327$224 = function $$_reduce_327(val, _values, result) {
+      $def(self, '$_reduce_334', function $$_reduce_334(val, _values, result) {
         var $a, $b, self = this, begin_t = nil, args = nil, body = nil, end_t = nil;
 
         
-        $b = val['$[]'](1), $a = Opal.to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), (end_t = ($a[3] == null ? nil : $a[3])), $b;
+        $b = val['$[]'](1), $a = $to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), (end_t = ($a[3] == null ? nil : $a[3])), $b;
         result = self.builder.$block(val['$[]'](0), begin_t, args, body, end_t);
         return result;
-      }, $Ruby30__reduce_327$224.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_329', $Ruby30__reduce_329$225 = function $$_reduce_329(val, _values, result) {
+      $def(self, '$_reduce_336', function $$_reduce_336(val, _values, result) {
         var $a, $b, self = this, else_t = nil, else_ = nil;
 
         
-        $b = val['$[]'](4), $a = Opal.to_ary($b), (else_t = ($a[0] == null ? nil : $a[0])), (else_ = ($a[1] == null ? nil : $a[1])), $b;
+        $b = val['$[]'](4), $a = $to_ary($b), (else_t = ($a[0] == null ? nil : $a[0])), (else_ = ($a[1] == null ? nil : $a[1])), $b;
         result = self.builder.$condition(val['$[]'](0), val['$[]'](1), val['$[]'](2), val['$[]'](3), else_t, else_, val['$[]'](5));
         return result;
-      }, $Ruby30__reduce_329$225.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_330', $Ruby30__reduce_330$226 = function $$_reduce_330(val, _values, result) {
+      $def(self, '$_reduce_337', function $$_reduce_337(val, _values, result) {
         var $a, $b, self = this, else_t = nil, else_ = nil;
 
         
-        $b = val['$[]'](4), $a = Opal.to_ary($b), (else_t = ($a[0] == null ? nil : $a[0])), (else_ = ($a[1] == null ? nil : $a[1])), $b;
+        $b = val['$[]'](4), $a = $to_ary($b), (else_t = ($a[0] == null ? nil : $a[0])), (else_ = ($a[1] == null ? nil : $a[1])), $b;
         result = self.builder.$condition(val['$[]'](0), val['$[]'](1), val['$[]'](2), else_, else_t, val['$[]'](3), val['$[]'](5));
         return result;
-      }, $Ruby30__reduce_330$226.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_331', $Ruby30__reduce_331$227 = function $$_reduce_331(val, _values, result) {
+      $def(self, '$_reduce_338', function $$_reduce_338(val, _values, result) {
         var self = this;
 
         
-        result = $send(self.builder, 'loop', ["while", val['$[]'](0)].concat(Opal.to_a(val['$[]'](1))).concat([val['$[]'](2), val['$[]'](3)]));
+        result = $send(self.builder, 'loop', ["while", val['$[]'](0)].concat($to_a(val['$[]'](1))).concat([val['$[]'](2), val['$[]'](3)]));
         return result;
-      }, $Ruby30__reduce_331$227.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_332', $Ruby30__reduce_332$228 = function $$_reduce_332(val, _values, result) {
+      $def(self, '$_reduce_339', function $$_reduce_339(val, _values, result) {
         var self = this;
 
         
-        result = $send(self.builder, 'loop', ["until", val['$[]'](0)].concat(Opal.to_a(val['$[]'](1))).concat([val['$[]'](2), val['$[]'](3)]));
+        result = $send(self.builder, 'loop', ["until", val['$[]'](0)].concat($to_a(val['$[]'](1))).concat([val['$[]'](2), val['$[]'](3)]));
         return result;
-      }, $Ruby30__reduce_332$228.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_333', $Ruby30__reduce_333$229 = function $$_reduce_333(val, _values, result) {
+      $def(self, '$_reduce_340', function $$_reduce_340(val, _values, result) {
         var $a, $b, $c, self = this, when_bodies = nil, else_t = nil, else_body = nil;
 
         
-        $a = [].concat(Opal.to_a(val['$[]'](3))), $b = $a.length - 1, $b = ($b < 0) ? 0 : $b, (when_bodies = $slice.call($a, 0, $b)), ($c = Opal.to_ary(($a[$b] == null ? nil : $a[$b])), (else_t = ($c[0] == null ? nil : $c[0])), (else_body = ($c[1] == null ? nil : $c[1]))), $a;
+        $a = [].concat($to_a(val['$[]'](3))), $b = $a.length - 1, $b = ($b < 0) ? 0 : $b, (when_bodies = $slice.call($a, 0, $b)), ($c = $to_ary(($a[$b] == null ? nil : $a[$b])), (else_t = ($c[0] == null ? nil : $c[0])), (else_body = ($c[1] == null ? nil : $c[1]))), $a;
         result = self.builder.$case(val['$[]'](0), val['$[]'](1), when_bodies, else_t, else_body, val['$[]'](4));
         return result;
-      }, $Ruby30__reduce_333$229.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_334', $Ruby30__reduce_334$230 = function $$_reduce_334(val, _values, result) {
+      $def(self, '$_reduce_341', function $$_reduce_341(val, _values, result) {
         var $a, $b, $c, self = this, when_bodies = nil, else_t = nil, else_body = nil;
 
         
-        $a = [].concat(Opal.to_a(val['$[]'](2))), $b = $a.length - 1, $b = ($b < 0) ? 0 : $b, (when_bodies = $slice.call($a, 0, $b)), ($c = Opal.to_ary(($a[$b] == null ? nil : $a[$b])), (else_t = ($c[0] == null ? nil : $c[0])), (else_body = ($c[1] == null ? nil : $c[1]))), $a;
+        $a = [].concat($to_a(val['$[]'](2))), $b = $a.length - 1, $b = ($b < 0) ? 0 : $b, (when_bodies = $slice.call($a, 0, $b)), ($c = $to_ary(($a[$b] == null ? nil : $a[$b])), (else_t = ($c[0] == null ? nil : $c[0])), (else_body = ($c[1] == null ? nil : $c[1]))), $a;
         result = self.builder.$case(val['$[]'](0), nil, when_bodies, else_t, else_body, val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_334$230.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_335', $Ruby30__reduce_335$231 = function $$_reduce_335(val, _values, result) {
+      $def(self, '$_reduce_342', function $$_reduce_342(val, _values, result) {
         var $a, $b, $c, self = this, in_bodies = nil, else_t = nil, else_body = nil;
 
         
-        $a = [].concat(Opal.to_a(val['$[]'](3))), $b = $a.length - 1, $b = ($b < 0) ? 0 : $b, (in_bodies = $slice.call($a, 0, $b)), ($c = Opal.to_ary(($a[$b] == null ? nil : $a[$b])), (else_t = ($c[0] == null ? nil : $c[0])), (else_body = ($c[1] == null ? nil : $c[1]))), $a;
+        $a = [].concat($to_a(val['$[]'](3))), $b = $a.length - 1, $b = ($b < 0) ? 0 : $b, (in_bodies = $slice.call($a, 0, $b)), ($c = $to_ary(($a[$b] == null ? nil : $a[$b])), (else_t = ($c[0] == null ? nil : $c[0])), (else_body = ($c[1] == null ? nil : $c[1]))), $a;
         result = self.builder.$case_match(val['$[]'](0), val['$[]'](1), in_bodies, else_t, else_body, val['$[]'](4));
         return result;
-      }, $Ruby30__reduce_335$231.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_336', $Ruby30__reduce_336$232 = function $$_reduce_336(val, _values, result) {
+      $def(self, '$_reduce_343', function $$_reduce_343(val, _values, result) {
         var self = this;
 
         
-        result = $send(self.builder, 'for', [val['$[]'](0), val['$[]'](1), val['$[]'](2)].concat(Opal.to_a(val['$[]'](3))).concat([val['$[]'](4), val['$[]'](5)]));
+        result = $send(self.builder, 'for', [val['$[]'](0), val['$[]'](1), val['$[]'](2)].concat($to_a(val['$[]'](3))).concat([val['$[]'](4), val['$[]'](5)]));
         return result;
-      }, $Ruby30__reduce_336$232.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_337', $Ruby30__reduce_337$233 = function $$_reduce_337(val, _values, result) {
+      $def(self, '$_reduce_344', function $$_reduce_344(val, _values, result) {
         var self = this, $writer = nil;
 
         
         
         $writer = [true];
-        $send(self.context, 'in_class=', Opal.to_a($writer));
+        $send(self.context, 'in_class=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         self.$local_push();
         return result;
-      }, $Ruby30__reduce_337$233.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_338', $Ruby30__reduce_338$234 = function $$_reduce_338(val, _values, result) {
+      $def(self, '$_reduce_345', function $$_reduce_345(val, _values, result) {
         var $a, $b, self = this, k_class = nil, ctx = nil, lt_t = nil, superclass = nil, $writer = nil;
 
         
-        $b = val['$[]'](0), $a = Opal.to_ary($b), (k_class = ($a[0] == null ? nil : $a[0])), (ctx = ($a[1] == null ? nil : $a[1])), $b;
+        $b = val['$[]'](0), $a = $to_ary($b), (k_class = ($a[0] == null ? nil : $a[0])), (ctx = ($a[1] == null ? nil : $a[1])), $b;
         if ($truthy(self.context.$in_def())) {
-          self.$diagnostic("error", "class_in_def", nil, k_class)};
-        $b = val['$[]'](2), $a = Opal.to_ary($b), (lt_t = ($a[0] == null ? nil : $a[0])), (superclass = ($a[1] == null ? nil : $a[1])), $b;
+          self.$diagnostic("error", "class_in_def", nil, k_class)
+        };
+        $b = val['$[]'](2), $a = $to_ary($b), (lt_t = ($a[0] == null ? nil : $a[0])), (superclass = ($a[1] == null ? nil : $a[1])), $b;
         result = self.builder.$def_class(k_class, val['$[]'](1), lt_t, superclass, val['$[]'](4), val['$[]'](5));
         self.$local_pop();
         
         $writer = [ctx.$in_class()];
-        $send(self.context, 'in_class=', Opal.to_a($writer));
+        $send(self.context, 'in_class=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_338$234.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_339', $Ruby30__reduce_339$235 = function $$_reduce_339(val, _values, result) {
+      $def(self, '$_reduce_346', function $$_reduce_346(val, _values, result) {
         var self = this, $writer = nil;
 
         
         
         $writer = [false];
-        $send(self.context, 'in_def=', Opal.to_a($writer));
+        $send(self.context, 'in_def=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         
         $writer = [false];
-        $send(self.context, 'in_class=', Opal.to_a($writer));
+        $send(self.context, 'in_class=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         self.$local_push();
         return result;
-      }, $Ruby30__reduce_339$235.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_340', $Ruby30__reduce_340$236 = function $$_reduce_340(val, _values, result) {
+      $def(self, '$_reduce_347', function $$_reduce_347(val, _values, result) {
         var $a, $b, self = this, k_class = nil, ctx = nil, $writer = nil;
 
         
-        $b = val['$[]'](0), $a = Opal.to_ary($b), (k_class = ($a[0] == null ? nil : $a[0])), (ctx = ($a[1] == null ? nil : $a[1])), $b;
+        $b = val['$[]'](0), $a = $to_ary($b), (k_class = ($a[0] == null ? nil : $a[0])), (ctx = ($a[1] == null ? nil : $a[1])), $b;
         result = self.builder.$def_sclass(k_class, val['$[]'](1), val['$[]'](2), val['$[]'](5), val['$[]'](6));
         self.$local_pop();
         
         $writer = [ctx.$in_def()];
-        $send(self.context, 'in_def=', Opal.to_a($writer));
+        $send(self.context, 'in_def=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         
         $writer = [ctx.$in_class()];
-        $send(self.context, 'in_class=', Opal.to_a($writer));
+        $send(self.context, 'in_class=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_340$236.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_341', $Ruby30__reduce_341$237 = function $$_reduce_341(val, _values, result) {
+      $def(self, '$_reduce_348', function $$_reduce_348(val, _values, result) {
         var self = this, $writer = nil;
 
         
         
         $writer = [true];
-        $send(self.context, 'in_class=', Opal.to_a($writer));
+        $send(self.context, 'in_class=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         self.$local_push();
         return result;
-      }, $Ruby30__reduce_341$237.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_342', $Ruby30__reduce_342$238 = function $$_reduce_342(val, _values, result) {
+      $def(self, '$_reduce_349', function $$_reduce_349(val, _values, result) {
         var $a, $b, self = this, k_mod = nil, ctx = nil, $writer = nil;
 
         
-        $b = val['$[]'](0), $a = Opal.to_ary($b), (k_mod = ($a[0] == null ? nil : $a[0])), (ctx = ($a[1] == null ? nil : $a[1])), $b;
+        $b = val['$[]'](0), $a = $to_ary($b), (k_mod = ($a[0] == null ? nil : $a[0])), (ctx = ($a[1] == null ? nil : $a[1])), $b;
         if ($truthy(self.context.$in_def())) {
-          self.$diagnostic("error", "module_in_def", nil, k_mod)};
+          self.$diagnostic("error", "module_in_def", nil, k_mod)
+        };
         result = self.builder.$def_module(k_mod, val['$[]'](1), val['$[]'](3), val['$[]'](4));
         self.$local_pop();
         
         $writer = [ctx.$in_class()];
-        $send(self.context, 'in_class=', Opal.to_a($writer));
+        $send(self.context, 'in_class=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_342$238.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_343', $Ruby30__reduce_343$239 = function $$_reduce_343(val, _values, result) {
+      $def(self, '$_reduce_350', function $$_reduce_350(val, _values, result) {
         var $a, $b, $c, self = this, def_t = nil, name_t = nil, ctx = nil, $writer = nil;
 
         
-        $b = val['$[]'](0), $a = Opal.to_ary($b), (def_t = ($a[0] == null ? nil : $a[0])), ($c = Opal.to_ary(($a[1] == null ? nil : $a[1])), (name_t = ($c[0] == null ? nil : $c[0])), (ctx = ($c[1] == null ? nil : $c[1]))), $b;
+        $b = val['$[]'](0), $a = $to_ary($b), (def_t = ($a[0] == null ? nil : $a[0])), ($c = $to_ary(($a[1] == null ? nil : $a[1])), (name_t = ($c[0] == null ? nil : $c[0])), (ctx = ($c[1] == null ? nil : $c[1]))), $b;
         result = self.builder.$def_method(def_t, name_t, val['$[]'](1), val['$[]'](2), val['$[]'](3));
         self.$local_pop();
+        self.current_arg_stack.$pop();
         
         $writer = [ctx.$in_def()];
-        $send(self.context, 'in_def=', Opal.to_a($writer));
+        $send(self.context, 'in_def=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
-        self.current_arg_stack.$pop();
         return result;
-      }, $Ruby30__reduce_343$239.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_344', $Ruby30__reduce_344$240 = function $$_reduce_344(val, _values, result) {
+      $def(self, '$_reduce_351', function $$_reduce_351(val, _values, result) {
         var $a, $b, $c, self = this, def_t = nil, recv = nil, dot_t = nil, name_t = nil, ctx = nil, $writer = nil;
 
         
-        $b = val['$[]'](0), $a = Opal.to_ary($b), (def_t = ($a[0] == null ? nil : $a[0])), (recv = ($a[1] == null ? nil : $a[1])), (dot_t = ($a[2] == null ? nil : $a[2])), ($c = Opal.to_ary(($a[3] == null ? nil : $a[3])), (name_t = ($c[0] == null ? nil : $c[0])), (ctx = ($c[1] == null ? nil : $c[1]))), $b;
+        $b = val['$[]'](0), $a = $to_ary($b), (def_t = ($a[0] == null ? nil : $a[0])), (recv = ($a[1] == null ? nil : $a[1])), (dot_t = ($a[2] == null ? nil : $a[2])), ($c = $to_ary(($a[3] == null ? nil : $a[3])), (name_t = ($c[0] == null ? nil : $c[0])), (ctx = ($c[1] == null ? nil : $c[1]))), $b;
         result = self.builder.$def_singleton(def_t, recv, dot_t, name_t, val['$[]'](1), val['$[]'](2), val['$[]'](3));
         self.$local_pop();
+        self.current_arg_stack.$pop();
         
         $writer = [ctx.$in_def()];
-        $send(self.context, 'in_def=', Opal.to_a($writer));
+        $send(self.context, 'in_def=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
-        self.current_arg_stack.$pop();
         return result;
-      }, $Ruby30__reduce_344$240.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_345', $Ruby30__reduce_345$241 = function $$_reduce_345(val, _values, result) {
+      $def(self, '$_reduce_352', function $$_reduce_352(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$keyword_cmd("break", val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_345$241.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_346', $Ruby30__reduce_346$242 = function $$_reduce_346(val, _values, result) {
+      $def(self, '$_reduce_353', function $$_reduce_353(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$keyword_cmd("next", val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_346$242.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_347', $Ruby30__reduce_347$243 = function $$_reduce_347(val, _values, result) {
+      $def(self, '$_reduce_354', function $$_reduce_354(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$keyword_cmd("redo", val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_347$243.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_348', $Ruby30__reduce_348$244 = function $$_reduce_348(val, _values, result) {
+      $def(self, '$_reduce_355', function $$_reduce_355(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$keyword_cmd("retry", val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_348$244.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_350', $Ruby30__reduce_350$245 = function $$_reduce_350(val, _values, result) {
+      $def(self, '$_reduce_357', function $$_reduce_357(val, _values, result) {
         var self = this;
 
         
         result = [val['$[]'](0), self.context.$dup()];
         return result;
-      }, $Ruby30__reduce_350$245.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_351', $Ruby30__reduce_351$246 = function $$_reduce_351(val, _values, result) {
+      $def(self, '$_reduce_358', function $$_reduce_358(val, _values, result) {
         var self = this;
 
         
         result = [val['$[]'](0), self.context.$dup()];
         return result;
-      }, $Ruby30__reduce_351$246.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_352', $Ruby30__reduce_352$247 = function $$_reduce_352(val, _values, result) {
-        var self = this;
+      $def(self, '$_reduce_359', function $$_reduce_359(val, _values, result) {
+        var self = this, $writer = nil;
 
         
         result = val['$[]'](0);
+        
+        $writer = [true];
+        $send(self.context, 'in_argdef=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_352$247.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_353', $Ruby30__reduce_353$248 = function $$_reduce_353(val, _values, result) {
-        var self = this, $ret_or_6 = nil, $ret_or_7 = nil, $ret_or_8 = nil;
+      $def(self, '$_reduce_360', function $$_reduce_360(val, _values, result) {
+        var self = this, $ret_or_1 = nil;
 
         
-        if ($truthy((function() {if ($truthy(($ret_or_6 = (function() {if ($truthy(($ret_or_7 = self.context.$in_class()))) {
-          return self.context.$in_def()['$!']()
-        } else {
-          return $ret_or_7
-        }; return nil; })()))) {
-          return (function() {if ($truthy(($ret_or_8 = self.$context().$in_block()))) {
-            return $ret_or_8
-          } else {
-            return self.$context().$in_lambda()
-          }; return nil; })()['$!']()
-        } else {
-          return $ret_or_6
-        }; return nil; })())) {
-          self.$diagnostic("error", "invalid_return", nil, val['$[]'](0))};
+        if ((($truthy(self.context.$in_class()) && ($not(self.context.$in_def()))) && ($not(($truthy(($ret_or_1 = self.$context().$in_block())) ? ($ret_or_1) : (self.$context().$in_lambda())))))) {
+          self.$diagnostic("error", "invalid_return", nil, val['$[]'](0))
+        };
         return result;
-      }, $Ruby30__reduce_353$248.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_356', $Ruby30__reduce_356$249 = function $$_reduce_356(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_363', function $$_reduce_363(val, _values, result) {
+        
         
         result = val['$[]'](1);
         return result;
-      }, $Ruby30__reduce_356$249.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_360', $Ruby30__reduce_360$250 = function $$_reduce_360(val, _values, result) {
+      $def(self, '$_reduce_367', function $$_reduce_367(val, _values, result) {
         var $a, $b, self = this, else_t = nil, else_ = nil;
 
         
-        $b = val['$[]'](4), $a = Opal.to_ary($b), (else_t = ($a[0] == null ? nil : $a[0])), (else_ = ($a[1] == null ? nil : $a[1])), $b;
+        $b = val['$[]'](4), $a = $to_ary($b), (else_t = ($a[0] == null ? nil : $a[0])), (else_ = ($a[1] == null ? nil : $a[1])), $b;
         result = [val['$[]'](0), self.builder.$condition(val['$[]'](0), val['$[]'](1), val['$[]'](2), val['$[]'](3), else_t, else_, nil)];
         return result;
-      }, $Ruby30__reduce_360$250.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_362', $Ruby30__reduce_362$251 = function $$_reduce_362(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_369', function $$_reduce_369(val, _values, result) {
+        
         
         result = val;
         return result;
-      }, $Ruby30__reduce_362$251.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_365', $Ruby30__reduce_365$252 = function $$_reduce_365(val, _values, result) {
+      $def(self, '$_reduce_372', function $$_reduce_372(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$arg(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_365$252.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_366', $Ruby30__reduce_366$253 = function $$_reduce_366(val, _values, result) {
+      $def(self, '$_reduce_373', function $$_reduce_373(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$multi_lhs(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_366$253.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_367', $Ruby30__reduce_367$254 = function $$_reduce_367(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_374', function $$_reduce_374(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_367$254.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_368', $Ruby30__reduce_368$255 = function $$_reduce_368(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_375', function $$_reduce_375(val, _values, result) {
+        
         
         result = val['$[]'](0)['$<<'](val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_368$255.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_370', $Ruby30__reduce_370$256 = function $$_reduce_370(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_377', function $$_reduce_377(val, _values, result) {
+        
         
         result = val['$[]'](0).$push(val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_370$256.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_371', $Ruby30__reduce_371$257 = function $$_reduce_371(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_378', function $$_reduce_378(val, _values, result) {
+        
         
         result = val['$[]'](0).$push(val['$[]'](2)).$concat(val['$[]'](4));
         return result;
-      }, $Ruby30__reduce_371$257.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_372', $Ruby30__reduce_372$258 = function $$_reduce_372(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_379', function $$_reduce_379(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_372$258.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_373', $Ruby30__reduce_373$259 = function $$_reduce_373(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_380', function $$_reduce_380(val, _values, result) {
         
-        result = [val['$[]'](0)].concat(Opal.to_a(val['$[]'](2)));
+        
+        result = [val['$[]'](0)].concat($to_a(val['$[]'](2)));
         return result;
-      }, $Ruby30__reduce_373$259.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_374', $Ruby30__reduce_374$260 = function $$_reduce_374(val, _values, result) {
+      $def(self, '$_reduce_381', function $$_reduce_381(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$restarg(val['$[]'](0), val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_374$260.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_375', $Ruby30__reduce_375$261 = function $$_reduce_375(val, _values, result) {
+      $def(self, '$_reduce_382', function $$_reduce_382(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$restarg(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_375$261.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_378', $Ruby30__reduce_378$262 = function $$_reduce_378(val, _values, result) {
-        var self = this;
+      $def(self, '$_reduce_385', function $$_reduce_385(val, _values, result) {
+        var self = this, $writer = nil;
 
         
+        
+        $writer = [false];
+        $send(self.context, 'in_argdef=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
+        return result;
+      }, 3);
+      
+      $def(self, '$_reduce_386', function $$_reduce_386(val, _values, result) {
+        
+        
+        result = val['$[]'](1);
+        return result;
+      }, 3);
+      
+      $def(self, '$_reduce_387', function $$_reduce_387(val, _values, result) {
+        
+        
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_378$262.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_379', $Ruby30__reduce_379$263 = function $$_reduce_379(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_388', function $$_reduce_388(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_379$263.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_380', $Ruby30__reduce_380$264 = function $$_reduce_380(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_389', function $$_reduce_389(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_380$264.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_381', $Ruby30__reduce_381$265 = function $$_reduce_381(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_390', function $$_reduce_390(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_381$265.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_382', $Ruby30__reduce_382$266 = function $$_reduce_382(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_391', function $$_reduce_391(val, _values, result) {
+        
         
         result = val['$[]'](1);
         return result;
-      }, $Ruby30__reduce_382$266.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_383', $Ruby30__reduce_383$267 = function $$_reduce_383(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_392', function $$_reduce_392(val, _values, result) {
+        
         
         result = [];
         return result;
-      }, $Ruby30__reduce_383$267.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_385', $Ruby30__reduce_385$268 = function $$_reduce_385(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_394', function $$_reduce_394(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](4)).$concat(val['$[]'](5));
         return result;
-      }, $Ruby30__reduce_385$268.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_386', $Ruby30__reduce_386$269 = function $$_reduce_386(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_395', function $$_reduce_395(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](4)).$concat(val['$[]'](6)).$concat(val['$[]'](7));
         return result;
-      }, $Ruby30__reduce_386$269.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_387', $Ruby30__reduce_387$270 = function $$_reduce_387(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_396', function $$_reduce_396(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_387$270.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_388', $Ruby30__reduce_388$271 = function $$_reduce_388(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_397', function $$_reduce_397(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](4)).$concat(val['$[]'](5));
         return result;
-      }, $Ruby30__reduce_388$271.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_389', $Ruby30__reduce_389$272 = function $$_reduce_389(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_398', function $$_reduce_398(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_389$272.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_391', $Ruby30__reduce_391$273 = function $$_reduce_391(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_400', function $$_reduce_400(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](4)).$concat(val['$[]'](5));
         return result;
-      }, $Ruby30__reduce_391$273.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_392', $Ruby30__reduce_392$274 = function $$_reduce_392(val, _values, result) {
-        var self = this, $ret_or_9 = nil;
+      $def(self, '$_reduce_401', function $$_reduce_401(val, _values, result) {
+        var self = this;
 
         
-        if ($truthy((function() {if ($truthy(($ret_or_9 = val['$[]'](1)['$empty?']()))) {
-          return val['$[]'](0).$size()['$=='](1)
-        } else {
-          return $ret_or_9
-        }; return nil; })())) {
+        if (($truthy(val['$[]'](1)['$empty?']()) && ($eqeq(val['$[]'](0).$size(), 1)))) {
           result = [self.builder.$procarg0(val['$[]'](0)['$[]'](0))]
         } else {
           result = val['$[]'](0).$concat(val['$[]'](1))
         };
         return result;
-      }, $Ruby30__reduce_392$274.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_393', $Ruby30__reduce_393$275 = function $$_reduce_393(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_402', function $$_reduce_402(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_393$275.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_394', $Ruby30__reduce_394$276 = function $$_reduce_394(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_403', function $$_reduce_403(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](4)).$concat(val['$[]'](5));
         return result;
-      }, $Ruby30__reduce_394$276.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_395', $Ruby30__reduce_395$277 = function $$_reduce_395(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_404', function $$_reduce_404(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_395$277.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_396', $Ruby30__reduce_396$278 = function $$_reduce_396(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_405', function $$_reduce_405(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_396$278.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_397', $Ruby30__reduce_397$279 = function $$_reduce_397(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_406', function $$_reduce_406(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_397$279.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_398', $Ruby30__reduce_398$280 = function $$_reduce_398(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_407', function $$_reduce_407(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_398$280.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_400', $Ruby30__reduce_400$281 = function $$_reduce_400(val, _values, result) {
+      $def(self, '$_reduce_409', function $$_reduce_409(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$args(nil, [], nil);
         return result;
-      }, $Ruby30__reduce_400$281.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_401', $Ruby30__reduce_401$282 = function $$_reduce_401(val, _values, result) {
+      $def(self, '$_reduce_410', function $$_reduce_410(val, _values, result) {
         var self = this, $writer = nil;
 
         
         
         $writer = ["expr_value"];
-        $send(self.lexer, 'state=', Opal.to_a($writer));
+        $send(self.lexer, 'state=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_401$282.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_402', $Ruby30__reduce_402$283 = function $$_reduce_402(val, _values, result) {
-        var self = this;
+      $def(self, '$_reduce_411', function $$_reduce_411(val, _values, result) {
+        var self = this, $writer = nil;
 
         
         self.max_numparam_stack['$has_ordinary_params!']();
         self.current_arg_stack.$set(nil);
+        
+        $writer = [false];
+        $send(self.context, 'in_argdef=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
         result = self.builder.$args(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_402$283.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_403', $Ruby30__reduce_403$284 = function $$_reduce_403(val, _values, result) {
-        var self = this;
+      $def(self, '$_reduce_412', function $$_reduce_412(val, _values, result) {
+        var self = this, $writer = nil;
 
         
         self.max_numparam_stack['$has_ordinary_params!']();
         self.current_arg_stack.$set(nil);
+        
+        $writer = [false];
+        $send(self.context, 'in_argdef=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
         result = self.builder.$args(val['$[]'](0), val['$[]'](1).$concat(val['$[]'](2)), val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_403$284.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_404', $Ruby30__reduce_404$285 = function $$_reduce_404(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_413', function $$_reduce_413(val, _values, result) {
+        
         
         result = [];
         return result;
-      }, $Ruby30__reduce_404$285.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_405', $Ruby30__reduce_405$286 = function $$_reduce_405(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_414', function $$_reduce_414(val, _values, result) {
+        
         
         result = val['$[]'](2);
         return result;
-      }, $Ruby30__reduce_405$286.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_406', $Ruby30__reduce_406$287 = function $$_reduce_406(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_415', function $$_reduce_415(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_406$287.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_407', $Ruby30__reduce_407$288 = function $$_reduce_407(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_416', function $$_reduce_416(val, _values, result) {
+        
         
         result = val['$[]'](0)['$<<'](val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_407$288.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_408', $Ruby30__reduce_408$289 = function $$_reduce_408(val, _values, result) {
+      $def(self, '$_reduce_417', function $$_reduce_417(val, _values, result) {
         var self = this;
 
         
         self.static_env.$declare(val['$[]'](0)['$[]'](0));
         result = self.builder.$shadowarg(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_408$289.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_410', $Ruby30__reduce_410$290 = function $$_reduce_410(val, _values, result) {
+      $def(self, '$_reduce_419', function $$_reduce_419(val, _values, result) {
         var self = this, $writer = nil;
 
         
@@ -26643,393 +23474,389 @@ Opal.modules["parser/ruby30"] = function(Opal) {
         result = self.context.$dup();
         
         $writer = [true];
-        $send(self.context, 'in_lambda=', Opal.to_a($writer));
+        $send(self.context, 'in_lambda=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_410$290.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_411', $Ruby30__reduce_411$291 = function $$_reduce_411(val, _values, result) {
+      $def(self, '$_reduce_420', function $$_reduce_420(val, _values, result) {
         var self = this;
 
         
         self.lexer.$cmdarg().$push(false);
         return result;
-      }, $Ruby30__reduce_411$291.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_412', $Ruby30__reduce_412$292 = function $$_reduce_412(val, _values, result) {
+      $def(self, '$_reduce_421', function $$_reduce_421(val, _values, result) {
         var $a, $b, self = this, lambda_call = nil, args = nil, begin_t = nil, body = nil, end_t = nil, $writer = nil;
 
         
         lambda_call = self.builder.$call_lambda(val['$[]'](0));
-        args = (function() {if ($truthy(self.max_numparam_stack['$has_numparams?']())) {
-          return self.builder.$numargs(self.max_numparam_stack.$top())
-        } else {
-          return val['$[]'](2)
-        }; return nil; })();
-        $b = val['$[]'](4), $a = Opal.to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (body = ($a[1] == null ? nil : $a[1])), (end_t = ($a[2] == null ? nil : $a[2])), $b;
+        args = ($truthy(self.max_numparam_stack['$has_numparams?']()) ? (self.builder.$numargs(self.max_numparam_stack.$top())) : (val['$[]'](2)));
+        $b = val['$[]'](4), $a = $to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (body = ($a[1] == null ? nil : $a[1])), (end_t = ($a[2] == null ? nil : $a[2])), $b;
         self.max_numparam_stack.$pop();
         self.static_env.$unextend();
         self.lexer.$cmdarg().$pop();
         
         $writer = [val['$[]'](1).$in_lambda()];
-        $send(self.context, 'in_lambda=', Opal.to_a($writer));
+        $send(self.context, 'in_lambda=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         result = self.builder.$block(lambda_call, begin_t, args, body, end_t);
         return result;
-      }, $Ruby30__reduce_412$292.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_413', $Ruby30__reduce_413$293 = function $$_reduce_413(val, _values, result) {
-        var self = this;
+      $def(self, '$_reduce_422', function $$_reduce_422(val, _values, result) {
+        var self = this, $writer = nil;
 
         
+        
+        $writer = [false];
+        $send(self.context, 'in_argdef=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
         self.max_numparam_stack['$has_ordinary_params!']();
         result = self.builder.$args(val['$[]'](0), val['$[]'](1).$concat(val['$[]'](2)), val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_413$293.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_414', $Ruby30__reduce_414$294 = function $$_reduce_414(val, _values, result) {
-        var self = this;
+      $def(self, '$_reduce_423', function $$_reduce_423(val, _values, result) {
+        var self = this, $writer = nil;
 
         
+        
+        $writer = [false];
+        $send(self.context, 'in_argdef=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
         if ($truthy(val['$[]'](0)['$any?']())) {
-          self.max_numparam_stack['$has_ordinary_params!']()};
+          self.max_numparam_stack['$has_ordinary_params!']()
+        };
         result = self.builder.$args(nil, val['$[]'](0), nil);
         return result;
-      }, $Ruby30__reduce_414$294.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_415', $Ruby30__reduce_415$295 = function $$_reduce_415(val, _values, result) {
+      $def(self, '$_reduce_424', function $$_reduce_424(val, _values, result) {
         var self = this, $writer = nil;
 
         
         result = self.context.$dup();
         
         $writer = [true];
-        $send(self.context, 'in_lambda=', Opal.to_a($writer));
+        $send(self.context, 'in_lambda=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_415$295.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_416', $Ruby30__reduce_416$296 = function $$_reduce_416(val, _values, result) {
+      $def(self, '$_reduce_425', function $$_reduce_425(val, _values, result) {
         var self = this, $writer = nil;
 
         
-        result = [val['$[]'](0), val['$[]'](2), val['$[]'](3)];
         
         $writer = [val['$[]'](1).$in_lambda()];
-        $send(self.context, 'in_lambda=', Opal.to_a($writer));
+        $send(self.context, 'in_lambda=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
+        result = [val['$[]'](0), val['$[]'](2), val['$[]'](3)];
         return result;
-      }, $Ruby30__reduce_416$296.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_417', $Ruby30__reduce_417$297 = function $$_reduce_417(val, _values, result) {
+      $def(self, '$_reduce_426', function $$_reduce_426(val, _values, result) {
         var self = this, $writer = nil;
 
         
         result = self.context.$dup();
         
         $writer = [true];
-        $send(self.context, 'in_lambda=', Opal.to_a($writer));
+        $send(self.context, 'in_lambda=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_417$297.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_418', $Ruby30__reduce_418$298 = function $$_reduce_418(val, _values, result) {
+      $def(self, '$_reduce_427', function $$_reduce_427(val, _values, result) {
         var self = this, $writer = nil;
 
         
-        result = [val['$[]'](0), val['$[]'](2), val['$[]'](3)];
         
         $writer = [val['$[]'](1).$in_lambda()];
-        $send(self.context, 'in_lambda=', Opal.to_a($writer));
+        $send(self.context, 'in_lambda=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
+        result = [val['$[]'](0), val['$[]'](2), val['$[]'](3)];
         return result;
-      }, $Ruby30__reduce_418$298.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_419', $Ruby30__reduce_419$299 = function $$_reduce_419(val, _values, result) {
+      $def(self, '$_reduce_428', function $$_reduce_428(val, _values, result) {
         var self = this, $writer = nil;
 
         
         result = self.context.$dup();
         
         $writer = [true];
-        $send(self.context, 'in_block=', Opal.to_a($writer));
+        $send(self.context, 'in_block=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_419$299.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_420', $Ruby30__reduce_420$300 = function $$_reduce_420(val, _values, result) {
+      $def(self, '$_reduce_429', function $$_reduce_429(val, _values, result) {
         var self = this, $writer = nil;
 
         
-        result = [val['$[]'](0)].concat(Opal.to_a(val['$[]'](2))).concat([val['$[]'](3)]);
         
         $writer = [val['$[]'](1).$in_block()];
-        $send(self.context, 'in_block=', Opal.to_a($writer));
+        $send(self.context, 'in_block=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
+        result = [val['$[]'](0)].concat($to_a(val['$[]'](2))).concat([val['$[]'](3)]);
         return result;
-      }, $Ruby30__reduce_420$300.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_421', $Ruby30__reduce_421$301 = function $$_reduce_421(val, _values, result) {
+      $def(self, '$_reduce_430', function $$_reduce_430(val, _values, result) {
         var $a, $b, self = this, begin_t = nil, block_args = nil, body = nil, end_t = nil;
 
         
-        $b = val['$[]'](1), $a = Opal.to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (block_args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), (end_t = ($a[3] == null ? nil : $a[3])), $b;
+        $b = val['$[]'](1), $a = $to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (block_args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), (end_t = ($a[3] == null ? nil : $a[3])), $b;
         result = self.builder.$block(val['$[]'](0), begin_t, block_args, body, end_t);
         return result;
-      }, $Ruby30__reduce_421$301.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_422', $Ruby30__reduce_422$302 = function $$_reduce_422(val, _values, result) {
+      $def(self, '$_reduce_431', function $$_reduce_431(val, _values, result) {
         var $a, $b, self = this, lparen_t = nil, args = nil, rparen_t = nil;
 
         
-        $b = val['$[]'](3), $a = Opal.to_ary($b), (lparen_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (rparen_t = ($a[2] == null ? nil : $a[2])), $b;
+        $b = val['$[]'](3), $a = $to_ary($b), (lparen_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (rparen_t = ($a[2] == null ? nil : $a[2])), $b;
         result = self.builder.$call_method(val['$[]'](0), val['$[]'](1), val['$[]'](2), lparen_t, args, rparen_t);
         return result;
-      }, $Ruby30__reduce_422$302.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_423', $Ruby30__reduce_423$303 = function $$_reduce_423(val, _values, result) {
+      $def(self, '$_reduce_432', function $$_reduce_432(val, _values, result) {
         var $a, $b, self = this, lparen_t = nil, args = nil, rparen_t = nil, method_call = nil, begin_t = nil, body = nil, end_t = nil;
 
         
-        $b = val['$[]'](3), $a = Opal.to_ary($b), (lparen_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (rparen_t = ($a[2] == null ? nil : $a[2])), $b;
+        $b = val['$[]'](3), $a = $to_ary($b), (lparen_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (rparen_t = ($a[2] == null ? nil : $a[2])), $b;
         method_call = self.builder.$call_method(val['$[]'](0), val['$[]'](1), val['$[]'](2), lparen_t, args, rparen_t);
-        $b = val['$[]'](4), $a = Opal.to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), (end_t = ($a[3] == null ? nil : $a[3])), $b;
+        $b = val['$[]'](4), $a = $to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), (end_t = ($a[3] == null ? nil : $a[3])), $b;
         result = self.builder.$block(method_call, begin_t, args, body, end_t);
         return result;
-      }, $Ruby30__reduce_423$303.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_424', $Ruby30__reduce_424$304 = function $$_reduce_424(val, _values, result) {
+      $def(self, '$_reduce_433', function $$_reduce_433(val, _values, result) {
         var $a, $b, self = this, method_call = nil, begin_t = nil, args = nil, body = nil, end_t = nil;
 
         
         method_call = self.builder.$call_method(val['$[]'](0), val['$[]'](1), val['$[]'](2), nil, val['$[]'](3), nil);
-        $b = val['$[]'](4), $a = Opal.to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), (end_t = ($a[3] == null ? nil : $a[3])), $b;
+        $b = val['$[]'](4), $a = $to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), (end_t = ($a[3] == null ? nil : $a[3])), $b;
         result = self.builder.$block(method_call, begin_t, args, body, end_t);
         return result;
-      }, $Ruby30__reduce_424$304.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_425', $Ruby30__reduce_425$305 = function $$_reduce_425(val, _values, result) {
+      $def(self, '$_reduce_434', function $$_reduce_434(val, _values, result) {
         var $a, $b, self = this, lparen_t = nil, args = nil, rparen_t = nil;
 
         
-        $b = val['$[]'](1), $a = Opal.to_ary($b), (lparen_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (rparen_t = ($a[2] == null ? nil : $a[2])), $b;
+        $b = val['$[]'](1), $a = $to_ary($b), (lparen_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (rparen_t = ($a[2] == null ? nil : $a[2])), $b;
         result = self.builder.$call_method(nil, nil, val['$[]'](0), lparen_t, args, rparen_t);
         return result;
-      }, $Ruby30__reduce_425$305.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_426', $Ruby30__reduce_426$306 = function $$_reduce_426(val, _values, result) {
+      $def(self, '$_reduce_435', function $$_reduce_435(val, _values, result) {
         var $a, $b, self = this, lparen_t = nil, args = nil, rparen_t = nil;
 
         
-        $b = val['$[]'](3), $a = Opal.to_ary($b), (lparen_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (rparen_t = ($a[2] == null ? nil : $a[2])), $b;
+        $b = val['$[]'](3), $a = $to_ary($b), (lparen_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (rparen_t = ($a[2] == null ? nil : $a[2])), $b;
         result = self.builder.$call_method(val['$[]'](0), val['$[]'](1), val['$[]'](2), lparen_t, args, rparen_t);
         return result;
-      }, $Ruby30__reduce_426$306.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_427', $Ruby30__reduce_427$307 = function $$_reduce_427(val, _values, result) {
+      $def(self, '$_reduce_436', function $$_reduce_436(val, _values, result) {
         var $a, $b, self = this, lparen_t = nil, args = nil, rparen_t = nil;
 
         
-        $b = val['$[]'](3), $a = Opal.to_ary($b), (lparen_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (rparen_t = ($a[2] == null ? nil : $a[2])), $b;
+        $b = val['$[]'](3), $a = $to_ary($b), (lparen_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (rparen_t = ($a[2] == null ? nil : $a[2])), $b;
         result = self.builder.$call_method(val['$[]'](0), val['$[]'](1), val['$[]'](2), lparen_t, args, rparen_t);
         return result;
-      }, $Ruby30__reduce_427$307.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_428', $Ruby30__reduce_428$308 = function $$_reduce_428(val, _values, result) {
+      $def(self, '$_reduce_437', function $$_reduce_437(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$call_method(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_428$308.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_429', $Ruby30__reduce_429$309 = function $$_reduce_429(val, _values, result) {
+      $def(self, '$_reduce_438', function $$_reduce_438(val, _values, result) {
         var $a, $b, self = this, lparen_t = nil, args = nil, rparen_t = nil;
 
         
-        $b = val['$[]'](2), $a = Opal.to_ary($b), (lparen_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (rparen_t = ($a[2] == null ? nil : $a[2])), $b;
+        $b = val['$[]'](2), $a = $to_ary($b), (lparen_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (rparen_t = ($a[2] == null ? nil : $a[2])), $b;
         result = self.builder.$call_method(val['$[]'](0), val['$[]'](1), nil, lparen_t, args, rparen_t);
         return result;
-      }, $Ruby30__reduce_429$309.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_430', $Ruby30__reduce_430$310 = function $$_reduce_430(val, _values, result) {
+      $def(self, '$_reduce_439', function $$_reduce_439(val, _values, result) {
         var $a, $b, self = this, lparen_t = nil, args = nil, rparen_t = nil;
 
         
-        $b = val['$[]'](2), $a = Opal.to_ary($b), (lparen_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (rparen_t = ($a[2] == null ? nil : $a[2])), $b;
+        $b = val['$[]'](2), $a = $to_ary($b), (lparen_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (rparen_t = ($a[2] == null ? nil : $a[2])), $b;
         result = self.builder.$call_method(val['$[]'](0), val['$[]'](1), nil, lparen_t, args, rparen_t);
         return result;
-      }, $Ruby30__reduce_430$310.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_431', $Ruby30__reduce_431$311 = function $$_reduce_431(val, _values, result) {
+      $def(self, '$_reduce_440', function $$_reduce_440(val, _values, result) {
         var $a, $b, self = this, lparen_t = nil, args = nil, rparen_t = nil;
 
         
-        $b = val['$[]'](1), $a = Opal.to_ary($b), (lparen_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (rparen_t = ($a[2] == null ? nil : $a[2])), $b;
+        $b = val['$[]'](1), $a = $to_ary($b), (lparen_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (rparen_t = ($a[2] == null ? nil : $a[2])), $b;
         result = self.builder.$keyword_cmd("super", val['$[]'](0), lparen_t, args, rparen_t);
         return result;
-      }, $Ruby30__reduce_431$311.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_432', $Ruby30__reduce_432$312 = function $$_reduce_432(val, _values, result) {
+      $def(self, '$_reduce_441', function $$_reduce_441(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$keyword_cmd("zsuper", val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_432$312.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_433', $Ruby30__reduce_433$313 = function $$_reduce_433(val, _values, result) {
+      $def(self, '$_reduce_442', function $$_reduce_442(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$index(val['$[]'](0), val['$[]'](1), val['$[]'](2), val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_433$313.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_434', $Ruby30__reduce_434$314 = function $$_reduce_434(val, _values, result) {
+      $def(self, '$_reduce_443', function $$_reduce_443(val, _values, result) {
         var self = this, $writer = nil;
 
         
         result = self.context.$dup();
         
         $writer = [true];
-        $send(self.context, 'in_block=', Opal.to_a($writer));
+        $send(self.context, 'in_block=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_434$314.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_435', $Ruby30__reduce_435$315 = function $$_reduce_435(val, _values, result) {
+      $def(self, '$_reduce_444', function $$_reduce_444(val, _values, result) {
         var self = this, $writer = nil;
 
         
-        result = [val['$[]'](0)].concat(Opal.to_a(val['$[]'](2))).concat([val['$[]'](3)]);
         
         $writer = [val['$[]'](1).$in_block()];
-        $send(self.context, 'in_block=', Opal.to_a($writer));
+        $send(self.context, 'in_block=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
+        result = [val['$[]'](0)].concat($to_a(val['$[]'](2))).concat([val['$[]'](3)]);
         return result;
-      }, $Ruby30__reduce_435$315.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_436', $Ruby30__reduce_436$316 = function $$_reduce_436(val, _values, result) {
+      $def(self, '$_reduce_445', function $$_reduce_445(val, _values, result) {
         var self = this, $writer = nil;
 
         
         result = self.context.$dup();
         
         $writer = [true];
-        $send(self.context, 'in_block=', Opal.to_a($writer));
+        $send(self.context, 'in_block=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_436$316.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_437', $Ruby30__reduce_437$317 = function $$_reduce_437(val, _values, result) {
+      $def(self, '$_reduce_446', function $$_reduce_446(val, _values, result) {
         var self = this, $writer = nil;
 
         
-        result = [val['$[]'](0)].concat(Opal.to_a(val['$[]'](2))).concat([val['$[]'](3)]);
         
         $writer = [val['$[]'](1).$in_block()];
-        $send(self.context, 'in_block=', Opal.to_a($writer));
+        $send(self.context, 'in_block=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
+        result = [val['$[]'](0)].concat($to_a(val['$[]'](2))).concat([val['$[]'](3)]);
         return result;
-      }, $Ruby30__reduce_437$317.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_438', $Ruby30__reduce_438$318 = function $$_reduce_438(val, _values, result) {
+      $def(self, '$_reduce_447', function $$_reduce_447(val, _values, result) {
         var self = this;
 
         
         self.static_env.$extend_dynamic();
         self.max_numparam_stack.$push($hash2(["static"], {"static": false}));
         return result;
-      }, $Ruby30__reduce_438$318.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_439', $Ruby30__reduce_439$319 = function $$_reduce_439(val, _values, result) {
+      $def(self, '$_reduce_448', function $$_reduce_448(val, _values, result) {
         var self = this, args = nil;
 
         
-        args = (function() {if ($truthy(self.max_numparam_stack['$has_numparams?']())) {
-          return self.builder.$numargs(self.max_numparam_stack.$top())
-        } else {
-          return val['$[]'](1)
-        }; return nil; })();
+        args = ($truthy(self.max_numparam_stack['$has_numparams?']()) ? (self.builder.$numargs(self.max_numparam_stack.$top())) : (val['$[]'](1)));
         result = [args, val['$[]'](2)];
         self.max_numparam_stack.$pop();
         self.static_env.$unextend();
         return result;
-      }, $Ruby30__reduce_439$319.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_440', $Ruby30__reduce_440$320 = function $$_reduce_440(val, _values, result) {
+      $def(self, '$_reduce_449', function $$_reduce_449(val, _values, result) {
         var self = this;
 
         
         self.static_env.$extend_dynamic();
         self.max_numparam_stack.$push($hash2(["static"], {"static": false}));
         return result;
-      }, $Ruby30__reduce_440$320.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_441', $Ruby30__reduce_441$321 = function $$_reduce_441(val, _values, result) {
+      $def(self, '$_reduce_450', function $$_reduce_450(val, _values, result) {
         var self = this;
 
         
         self.lexer.$cmdarg().$push(false);
         return result;
-      }, $Ruby30__reduce_441$321.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_442', $Ruby30__reduce_442$322 = function $$_reduce_442(val, _values, result) {
+      $def(self, '$_reduce_451', function $$_reduce_451(val, _values, result) {
         var self = this, args = nil;
 
         
-        args = (function() {if ($truthy(self.max_numparam_stack['$has_numparams?']())) {
-          return self.builder.$numargs(self.max_numparam_stack.$top())
-        } else {
-          return val['$[]'](2)
-        }; return nil; })();
+        args = ($truthy(self.max_numparam_stack['$has_numparams?']()) ? (self.builder.$numargs(self.max_numparam_stack.$top())) : (val['$[]'](2)));
         result = [args, val['$[]'](3)];
         self.max_numparam_stack.$pop();
         self.static_env.$unextend();
         self.lexer.$cmdarg().$pop();
         return result;
-      }, $Ruby30__reduce_442$322.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_443', $Ruby30__reduce_443$323 = function $$_reduce_443(val, _values, result) {
+      $def(self, '$_reduce_452', function $$_reduce_452(val, _values, result) {
         var self = this;
 
         
-        result = [self.builder.$when(val['$[]'](0), val['$[]'](1), val['$[]'](2), val['$[]'](3))].concat(Opal.to_a(val['$[]'](4)));
+        result = [self.builder.$when(val['$[]'](0), val['$[]'](1), val['$[]'](2), val['$[]'](3))].concat($to_a(val['$[]'](4)));
         return result;
-      }, $Ruby30__reduce_443$323.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_444', $Ruby30__reduce_444$324 = function $$_reduce_444(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_453', function $$_reduce_453(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_444$324.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_446', $Ruby30__reduce_446$325 = function $$_reduce_446(val, _values, result) {
+      $def(self, '$_reduce_455', function $$_reduce_455(val, _values, result) {
         var self = this, $writer = nil;
 
         
         
         $writer = ["expr_beg"];
-        $send(self.lexer, 'state=', Opal.to_a($writer));
+        $send(self.lexer, 'state=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         
         $writer = [false];
-        $send(self.lexer, 'command_start=', Opal.to_a($writer));
+        $send(self.lexer, 'command_start=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         self.pattern_variables.$push();
         self.pattern_hash_keys.$push();
         result = self.context.$in_kwarg();
         
         $writer = [true];
-        $send(self.context, 'in_kwarg=', Opal.to_a($writer));
+        $send(self.context, 'in_kwarg=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_446$325.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_447', $Ruby30__reduce_447$326 = function $$_reduce_447(val, _values, result) {
+      $def(self, '$_reduce_456', function $$_reduce_456(val, _values, result) {
         var self = this, $writer = nil;
 
         
@@ -27037,127 +23864,125 @@ Opal.modules["parser/ruby30"] = function(Opal) {
         self.pattern_hash_keys.$pop();
         
         $writer = [val['$[]'](1)];
-        $send(self.context, 'in_kwarg=', Opal.to_a($writer));
+        $send(self.context, 'in_kwarg=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_447$326.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_448', $Ruby30__reduce_448$327 = function $$_reduce_448(val, _values, result) {
+      $def(self, '$_reduce_457', function $$_reduce_457(val, _values, result) {
         var self = this;
 
         
-        result = [$send(self.builder, 'in_pattern', [val['$[]'](0)].concat(Opal.to_a(val['$[]'](2))).concat([val['$[]'](3), val['$[]'](5)]))].concat(Opal.to_a(val['$[]'](6)));
+        result = [$send(self.builder, 'in_pattern', [val['$[]'](0)].concat($to_a(val['$[]'](2))).concat([val['$[]'](3), val['$[]'](5)]))].concat($to_a(val['$[]'](6)));
         return result;
-      }, $Ruby30__reduce_448$327.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_449', $Ruby30__reduce_449$328 = function $$_reduce_449(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_458', function $$_reduce_458(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_449$328.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_451', $Ruby30__reduce_451$329 = function $$_reduce_451(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_460', function $$_reduce_460(val, _values, result) {
+        
         
         result = [val['$[]'](0), nil];
         return result;
-      }, $Ruby30__reduce_451$329.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_452', $Ruby30__reduce_452$330 = function $$_reduce_452(val, _values, result) {
+      $def(self, '$_reduce_461', function $$_reduce_461(val, _values, result) {
         var self = this;
 
         
         result = [val['$[]'](0), self.builder.$if_guard(val['$[]'](1), val['$[]'](2))];
         return result;
-      }, $Ruby30__reduce_452$330.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_453', $Ruby30__reduce_453$331 = function $$_reduce_453(val, _values, result) {
+      $def(self, '$_reduce_462', function $$_reduce_462(val, _values, result) {
         var self = this;
 
         
         result = [val['$[]'](0), self.builder.$unless_guard(val['$[]'](1), val['$[]'](2))];
         return result;
-      }, $Ruby30__reduce_453$331.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_455', $Ruby30__reduce_455$332 = function $$_reduce_455(val, _values, result) {
+      $def(self, '$_reduce_464', function $$_reduce_464(val, _values, result) {
         var self = this, item = nil;
 
         
         item = self.builder.$match_with_trailing_comma(val['$[]'](0), val['$[]'](1));
         result = self.builder.$array_pattern(nil, [item], nil);
         return result;
-      }, $Ruby30__reduce_455$332.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_456', $Ruby30__reduce_456$333 = function $$_reduce_456(val, _values, result) {
+      $def(self, '$_reduce_465', function $$_reduce_465(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$array_pattern(nil, [val['$[]'](0)].$concat(val['$[]'](2)), nil);
         return result;
-      }, $Ruby30__reduce_456$333.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_457', $Ruby30__reduce_457$334 = function $$_reduce_457(val, _values, result) {
+      $def(self, '$_reduce_466', function $$_reduce_466(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$find_pattern(nil, val['$[]'](0), nil);
         return result;
-      }, $Ruby30__reduce_457$334.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_458', $Ruby30__reduce_458$335 = function $$_reduce_458(val, _values, result) {
+      $def(self, '$_reduce_467', function $$_reduce_467(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$array_pattern(nil, val['$[]'](0), nil);
         return result;
-      }, $Ruby30__reduce_458$335.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_459', $Ruby30__reduce_459$336 = function $$_reduce_459(val, _values, result) {
+      $def(self, '$_reduce_468', function $$_reduce_468(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$hash_pattern(nil, val['$[]'](0), nil);
         return result;
-      }, $Ruby30__reduce_459$336.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_461', $Ruby30__reduce_461$337 = function $$_reduce_461(val, _values, result) {
+      $def(self, '$_reduce_470', function $$_reduce_470(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$match_as(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_461$337.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_463', $Ruby30__reduce_463$338 = function $$_reduce_463(val, _values, result) {
+      $def(self, '$_reduce_472', function $$_reduce_472(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$match_alt(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_463$338.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_465', $Ruby30__reduce_465$339 = function $$_reduce_465(val, _values, result) {
+      $def(self, '$_reduce_474', function $$_reduce_474(val, _values, result) {
         var self = this;
 
         
         result = val['$[]'](0);
         self.pattern_hash_keys.$push();
         return result;
-      }, $Ruby30__reduce_465$339.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_466', $Ruby30__reduce_466$340 = function $$_reduce_466(val, _values, result) {
+      $def(self, '$_reduce_475', function $$_reduce_475(val, _values, result) {
         var self = this;
 
         
         result = val['$[]'](0);
         self.pattern_hash_keys.$push();
         return result;
-      }, $Ruby30__reduce_466$340.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_468', $Ruby30__reduce_468$341 = function $$_reduce_468(val, _values, result) {
+      $def(self, '$_reduce_478', function $$_reduce_478(val, _values, result) {
         var self = this, pattern = nil;
 
         
@@ -27165,9 +23990,9 @@ Opal.modules["parser/ruby30"] = function(Opal) {
         pattern = self.builder.$array_pattern(nil, val['$[]'](2), nil);
         result = self.builder.$const_pattern(val['$[]'](0), val['$[]'](1), pattern, val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_468$341.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_469', $Ruby30__reduce_469$342 = function $$_reduce_469(val, _values, result) {
+      $def(self, '$_reduce_479', function $$_reduce_479(val, _values, result) {
         var self = this, pattern = nil;
 
         
@@ -27175,9 +24000,9 @@ Opal.modules["parser/ruby30"] = function(Opal) {
         pattern = self.builder.$find_pattern(nil, val['$[]'](2), nil);
         result = self.builder.$const_pattern(val['$[]'](0), val['$[]'](1), pattern, val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_469$342.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_470', $Ruby30__reduce_470$343 = function $$_reduce_470(val, _values, result) {
+      $def(self, '$_reduce_480', function $$_reduce_480(val, _values, result) {
         var self = this, pattern = nil;
 
         
@@ -27185,18 +24010,18 @@ Opal.modules["parser/ruby30"] = function(Opal) {
         pattern = self.builder.$hash_pattern(nil, val['$[]'](2), nil);
         result = self.builder.$const_pattern(val['$[]'](0), val['$[]'](1), pattern, val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_470$343.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_471', $Ruby30__reduce_471$344 = function $$_reduce_471(val, _values, result) {
+      $def(self, '$_reduce_481', function $$_reduce_481(val, _values, result) {
         var self = this, pattern = nil;
 
         
         pattern = self.builder.$array_pattern(val['$[]'](1), nil, val['$[]'](2));
         result = self.builder.$const_pattern(val['$[]'](0), val['$[]'](1), pattern, val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_471$344.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_472', $Ruby30__reduce_472$345 = function $$_reduce_472(val, _values, result) {
+      $def(self, '$_reduce_482', function $$_reduce_482(val, _values, result) {
         var self = this, pattern = nil;
 
         
@@ -27204,9 +24029,9 @@ Opal.modules["parser/ruby30"] = function(Opal) {
         pattern = self.builder.$array_pattern(nil, val['$[]'](2), nil);
         result = self.builder.$const_pattern(val['$[]'](0), val['$[]'](1), pattern, val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_472$345.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_473', $Ruby30__reduce_473$346 = function $$_reduce_473(val, _values, result) {
+      $def(self, '$_reduce_483', function $$_reduce_483(val, _values, result) {
         var self = this, pattern = nil;
 
         
@@ -27214,9 +24039,9 @@ Opal.modules["parser/ruby30"] = function(Opal) {
         pattern = self.builder.$find_pattern(nil, val['$[]'](2), nil);
         result = self.builder.$const_pattern(val['$[]'](0), val['$[]'](1), pattern, val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_473$346.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_474', $Ruby30__reduce_474$347 = function $$_reduce_474(val, _values, result) {
+      $def(self, '$_reduce_484', function $$_reduce_484(val, _values, result) {
         var self = this, pattern = nil;
 
         
@@ -27224,42 +24049,42 @@ Opal.modules["parser/ruby30"] = function(Opal) {
         pattern = self.builder.$hash_pattern(nil, val['$[]'](2), nil);
         result = self.builder.$const_pattern(val['$[]'](0), val['$[]'](1), pattern, val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_474$347.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_475', $Ruby30__reduce_475$348 = function $$_reduce_475(val, _values, result) {
+      $def(self, '$_reduce_485', function $$_reduce_485(val, _values, result) {
         var self = this, pattern = nil;
 
         
         pattern = self.builder.$array_pattern(val['$[]'](1), nil, val['$[]'](2));
         result = self.builder.$const_pattern(val['$[]'](0), val['$[]'](1), pattern, val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_475$348.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_476', $Ruby30__reduce_476$349 = function $$_reduce_476(val, _values, result) {
+      $def(self, '$_reduce_486', function $$_reduce_486(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$array_pattern(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_476$349.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_477', $Ruby30__reduce_477$350 = function $$_reduce_477(val, _values, result) {
+      $def(self, '$_reduce_487', function $$_reduce_487(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$find_pattern(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_477$350.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_478', $Ruby30__reduce_478$351 = function $$_reduce_478(val, _values, result) {
+      $def(self, '$_reduce_488', function $$_reduce_488(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$array_pattern(val['$[]'](0), [], val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_478$351.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_479', $Ruby30__reduce_479$352 = function $$_reduce_479(val, _values, result) {
+      $def(self, '$_reduce_489', function $$_reduce_489(val, _values, result) {
         var self = this, $writer = nil;
 
         
@@ -27267,684 +24092,667 @@ Opal.modules["parser/ruby30"] = function(Opal) {
         result = self.context.$in_kwarg();
         
         $writer = [false];
-        $send(self.context, 'in_kwarg=', Opal.to_a($writer));
+        $send(self.context, 'in_kwarg=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_479$352.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_480', $Ruby30__reduce_480$353 = function $$_reduce_480(val, _values, result) {
+      $def(self, '$_reduce_490', function $$_reduce_490(val, _values, result) {
         var self = this, $writer = nil;
 
         
         self.pattern_hash_keys.$pop();
         
         $writer = [val['$[]'](1)];
-        $send(self.context, 'in_kwarg=', Opal.to_a($writer));
+        $send(self.context, 'in_kwarg=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         result = self.builder.$hash_pattern(val['$[]'](0), val['$[]'](2), val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_480$353.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_481', $Ruby30__reduce_481$354 = function $$_reduce_481(val, _values, result) {
+      $def(self, '$_reduce_491', function $$_reduce_491(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$hash_pattern(val['$[]'](0), [], val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_481$354.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_482', $Ruby30__reduce_482$355 = function $$_reduce_482(val, _values, result) {
+      $def(self, '$_reduce_492', function $$_reduce_492(val, _values, result) {
         var self = this;
 
         
         self.pattern_hash_keys.$push();
         return result;
-      }, $Ruby30__reduce_482$355.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_483', $Ruby30__reduce_483$356 = function $$_reduce_483(val, _values, result) {
+      $def(self, '$_reduce_493', function $$_reduce_493(val, _values, result) {
         var self = this;
 
         
         self.pattern_hash_keys.$pop();
         result = self.builder.$begin(val['$[]'](0), val['$[]'](2), val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_483$356.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_484', $Ruby30__reduce_484$357 = function $$_reduce_484(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_494', function $$_reduce_494(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_484$357.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_485', $Ruby30__reduce_485$358 = function $$_reduce_485(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_495', function $$_reduce_495(val, _values, result) {
+        
         
         result = val['$[]'](0);
         return result;
-      }, $Ruby30__reduce_485$358.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_486', $Ruby30__reduce_486$359 = function $$_reduce_486(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_496', function $$_reduce_496(val, _values, result) {
+        
         
-        result = [].concat(Opal.to_a(val['$[]'](0))).concat([val['$[]'](1)]);
+        result = [].concat($to_a(val['$[]'](0))).concat([val['$[]'](1)]);
         return result;
-      }, $Ruby30__reduce_486$359.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_487', $Ruby30__reduce_487$360 = function $$_reduce_487(val, _values, result) {
+      $def(self, '$_reduce_497', function $$_reduce_497(val, _values, result) {
         var self = this, match_rest = nil;
 
         
         match_rest = self.builder.$match_rest(val['$[]'](1), val['$[]'](2));
-        result = [].concat(Opal.to_a(val['$[]'](0))).concat([match_rest]);
+        result = [].concat($to_a(val['$[]'](0))).concat([match_rest]);
         return result;
-      }, $Ruby30__reduce_487$360.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_488', $Ruby30__reduce_488$361 = function $$_reduce_488(val, _values, result) {
+      $def(self, '$_reduce_498', function $$_reduce_498(val, _values, result) {
         var self = this, match_rest = nil;
 
         
         match_rest = self.builder.$match_rest(val['$[]'](1), val['$[]'](2));
-        result = [].concat(Opal.to_a(val['$[]'](0))).concat([match_rest]).concat(Opal.to_a(val['$[]'](4)));
+        result = [].concat($to_a(val['$[]'](0))).concat([match_rest]).concat($to_a(val['$[]'](4)));
         return result;
-      }, $Ruby30__reduce_488$361.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_489', $Ruby30__reduce_489$362 = function $$_reduce_489(val, _values, result) {
+      $def(self, '$_reduce_499', function $$_reduce_499(val, _values, result) {
         var self = this;
 
         
-        result = [].concat(Opal.to_a(val['$[]'](0))).concat([self.builder.$match_rest(val['$[]'](1))]);
+        result = [].concat($to_a(val['$[]'](0))).concat([self.builder.$match_rest(val['$[]'](1))]);
         return result;
-      }, $Ruby30__reduce_489$362.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_490', $Ruby30__reduce_490$363 = function $$_reduce_490(val, _values, result) {
+      $def(self, '$_reduce_500', function $$_reduce_500(val, _values, result) {
         var self = this;
 
         
-        result = [].concat(Opal.to_a(val['$[]'](0))).concat([self.builder.$match_rest(val['$[]'](1))]).concat(Opal.to_a(val['$[]'](3)));
+        result = [].concat($to_a(val['$[]'](0))).concat([self.builder.$match_rest(val['$[]'](1))]).concat($to_a(val['$[]'](3)));
         return result;
-      }, $Ruby30__reduce_490$363.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_492', $Ruby30__reduce_492$364 = function $$_reduce_492(val, _values, result) {
+      $def(self, '$_reduce_502', function $$_reduce_502(val, _values, result) {
         var self = this, item = nil;
 
         
         item = self.builder.$match_with_trailing_comma(val['$[]'](0), val['$[]'](1));
         result = [item];
         return result;
-      }, $Ruby30__reduce_492$364.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_493', $Ruby30__reduce_493$365 = function $$_reduce_493(val, _values, result) {
+      $def(self, '$_reduce_503', function $$_reduce_503(val, _values, result) {
         var self = this, last_item = nil;
 
         
         last_item = self.builder.$match_with_trailing_comma(val['$[]'](1), val['$[]'](2));
-        result = [].concat(Opal.to_a(val['$[]'](0))).concat([last_item]);
+        result = [].concat($to_a(val['$[]'](0))).concat([last_item]);
         return result;
-      }, $Ruby30__reduce_493$365.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_494', $Ruby30__reduce_494$366 = function $$_reduce_494(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_504', function $$_reduce_504(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_494$366.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_495', $Ruby30__reduce_495$367 = function $$_reduce_495(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_505', function $$_reduce_505(val, _values, result) {
+        
         
-        result = [val['$[]'](0)].concat(Opal.to_a(val['$[]'](2)));
+        result = [val['$[]'](0)].concat($to_a(val['$[]'](2)));
         return result;
-      }, $Ruby30__reduce_495$367.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_496', $Ruby30__reduce_496$368 = function $$_reduce_496(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_506', function $$_reduce_506(val, _values, result) {
         
-        result = [val['$[]'](0)].concat(Opal.to_a(val['$[]'](2))).concat([val['$[]'](4)]);
+        
+        result = [val['$[]'](0)].concat($to_a(val['$[]'](2))).concat([val['$[]'](4)]);
         return result;
-      }, $Ruby30__reduce_496$368.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_497', $Ruby30__reduce_497$369 = function $$_reduce_497(val, _values, result) {
+      $def(self, '$_reduce_507', function $$_reduce_507(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$match_rest(val['$[]'](0), val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_497$369.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_498', $Ruby30__reduce_498$370 = function $$_reduce_498(val, _values, result) {
+      $def(self, '$_reduce_508', function $$_reduce_508(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$match_rest(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_498$370.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_499', $Ruby30__reduce_499$371 = function $$_reduce_499(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_509', function $$_reduce_509(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_499$371.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_500', $Ruby30__reduce_500$372 = function $$_reduce_500(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_510', function $$_reduce_510(val, _values, result) {
         
-        result = [].concat(Opal.to_a(val['$[]'](0))).concat([val['$[]'](2)]);
+        
+        result = [].concat($to_a(val['$[]'](0))).concat([val['$[]'](2)]);
         return result;
-      }, $Ruby30__reduce_500$372.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_502', $Ruby30__reduce_502$373 = function $$_reduce_502(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_512', function $$_reduce_512(val, _values, result) {
+        
         
-        result = [].concat(Opal.to_a(val['$[]'](0))).concat(Opal.to_a(val['$[]'](2)));
+        result = [].concat($to_a(val['$[]'](0))).concat($to_a(val['$[]'](2)));
         return result;
-      }, $Ruby30__reduce_502$373.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_503', $Ruby30__reduce_503$374 = function $$_reduce_503(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_513', function $$_reduce_513(val, _values, result) {
+        
         
         result = val['$[]'](0);
         return result;
-      }, $Ruby30__reduce_503$374.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_504', $Ruby30__reduce_504$375 = function $$_reduce_504(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_514', function $$_reduce_514(val, _values, result) {
+        
         
         result = val['$[]'](0);
         return result;
-      }, $Ruby30__reduce_504$375.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_505', $Ruby30__reduce_505$376 = function $$_reduce_505(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_515', function $$_reduce_515(val, _values, result) {
+        
         
         result = val['$[]'](0);
         return result;
-      }, $Ruby30__reduce_505$376.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_506', $Ruby30__reduce_506$377 = function $$_reduce_506(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_516', function $$_reduce_516(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_506$377.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_507', $Ruby30__reduce_507$378 = function $$_reduce_507(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_517', function $$_reduce_517(val, _values, result) {
         
-        result = [].concat(Opal.to_a(val['$[]'](0))).concat([val['$[]'](2)]);
+        
+        result = [].concat($to_a(val['$[]'](0))).concat([val['$[]'](2)]);
         return result;
-      }, $Ruby30__reduce_507$378.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_508', $Ruby30__reduce_508$379 = function $$_reduce_508(val, _values, result) {
+      $def(self, '$_reduce_518', function $$_reduce_518(val, _values, result) {
         var self = this;
 
         
-        result = $send(self.builder, 'match_pair', Opal.to_a(val['$[]'](0)).concat([val['$[]'](1)]));
+        result = $send(self.builder, 'match_pair', $to_a(val['$[]'](0)).concat([val['$[]'](1)]));
         return result;
-      }, $Ruby30__reduce_508$379.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_509', $Ruby30__reduce_509$380 = function $$_reduce_509(val, _values, result) {
+      $def(self, '$_reduce_519', function $$_reduce_519(val, _values, result) {
         var self = this;
 
         
-        result = $send(self.builder, 'match_label', Opal.to_a(val['$[]'](0)));
+        result = $send(self.builder, 'match_label', $to_a(val['$[]'](0)));
         return result;
-      }, $Ruby30__reduce_509$380.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_510', $Ruby30__reduce_510$381 = function $$_reduce_510(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_520', function $$_reduce_520(val, _values, result) {
+        
         
         result = ["label", val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_510$381.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_511', $Ruby30__reduce_511$382 = function $$_reduce_511(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_521', function $$_reduce_521(val, _values, result) {
+        
         
         result = ["quoted", [val['$[]'](0), val['$[]'](1), val['$[]'](2)]];
         return result;
-      }, $Ruby30__reduce_511$382.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_512', $Ruby30__reduce_512$383 = function $$_reduce_512(val, _values, result) {
+      $def(self, '$_reduce_522', function $$_reduce_522(val, _values, result) {
         var self = this;
 
         
         result = [self.builder.$match_rest(val['$[]'](0), val['$[]'](1))];
         return result;
-      }, $Ruby30__reduce_512$383.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_513', $Ruby30__reduce_513$384 = function $$_reduce_513(val, _values, result) {
+      $def(self, '$_reduce_523', function $$_reduce_523(val, _values, result) {
         var self = this;
 
         
         result = [self.builder.$match_rest(val['$[]'](0), nil)];
         return result;
-      }, $Ruby30__reduce_513$384.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_514', $Ruby30__reduce_514$385 = function $$_reduce_514(val, _values, result) {
+      $def(self, '$_reduce_524', function $$_reduce_524(val, _values, result) {
         var self = this;
 
         
         result = [self.builder.$match_nil_pattern(val['$[]'](0), val['$[]'](1))];
         return result;
-      }, $Ruby30__reduce_514$385.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_518', $Ruby30__reduce_518$386 = function $$_reduce_518(val, _values, result) {
+      $def(self, '$_reduce_528', function $$_reduce_528(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$range_inclusive(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_518$386.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_519', $Ruby30__reduce_519$387 = function $$_reduce_519(val, _values, result) {
+      $def(self, '$_reduce_529', function $$_reduce_529(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$range_exclusive(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_519$387.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_520', $Ruby30__reduce_520$388 = function $$_reduce_520(val, _values, result) {
+      $def(self, '$_reduce_530', function $$_reduce_530(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$range_inclusive(val['$[]'](0), val['$[]'](1), nil);
         return result;
-      }, $Ruby30__reduce_520$388.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_521', $Ruby30__reduce_521$389 = function $$_reduce_521(val, _values, result) {
+      $def(self, '$_reduce_531', function $$_reduce_531(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$range_exclusive(val['$[]'](0), val['$[]'](1), nil);
         return result;
-      }, $Ruby30__reduce_521$389.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_525', $Ruby30__reduce_525$390 = function $$_reduce_525(val, _values, result) {
+      $def(self, '$_reduce_535', function $$_reduce_535(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$range_inclusive(nil, val['$[]'](0), val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_525$390.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_526', $Ruby30__reduce_526$391 = function $$_reduce_526(val, _values, result) {
+      $def(self, '$_reduce_536', function $$_reduce_536(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$range_exclusive(nil, val['$[]'](0), val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_526$391.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_535', $Ruby30__reduce_535$392 = function $$_reduce_535(val, _values, result) {
+      $def(self, '$_reduce_545', function $$_reduce_545(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$accessible(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_535$392.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_537', $Ruby30__reduce_537$393 = function $$_reduce_537(val, _values, result) {
+      $def(self, '$_reduce_547', function $$_reduce_547(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$assignable(self.builder.$match_var(val['$[]'](0)));
         return result;
-      }, $Ruby30__reduce_537$393.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_538', $Ruby30__reduce_538$394 = function $$_reduce_538(val, _values, result) {
+      $def(self, '$_reduce_548', function $$_reduce_548(val, _values, result) {
         var self = this, name = nil, lvar = nil;
 
         
         name = val['$[]'](1)['$[]'](0);
-        if ($truthy(self.$static_env()['$declared?'](name))) {
-        } else {
+        if (!$truthy(self.$static_env()['$declared?'](name))) {
           self.$diagnostic("error", "undefined_lvar", $hash2(["name"], {"name": name}), val['$[]'](1))
         };
         lvar = self.builder.$accessible(self.builder.$ident(val['$[]'](1)));
         result = self.builder.$pin(val['$[]'](0), lvar);
         return result;
-      }, $Ruby30__reduce_538$394.$$arity = 3);
+      }, 3);
+      
+      $def(self, '$_reduce_549', function $$_reduce_549(val, _values, result) {
+        var self = this, non_lvar = nil;
+
+        
+        non_lvar = self.builder.$accessible(val['$[]'](1));
+        result = self.builder.$pin(val['$[]'](0), non_lvar);
+        return result;
+      }, 3);
+      
+      $def(self, '$_reduce_550', function $$_reduce_550(val, _values, result) {
+        var self = this, expr = nil;
+
+        
+        expr = self.builder.$begin(val['$[]'](1), val['$[]'](2), val['$[]'](3));
+        result = self.builder.$pin(val['$[]'](0), expr);
+        return result;
+      }, 3);
       
-      Opal.def(self, '$_reduce_539', $Ruby30__reduce_539$395 = function $$_reduce_539(val, _values, result) {
+      $def(self, '$_reduce_551', function $$_reduce_551(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$const_global(val['$[]'](0), val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_539$395.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_540', $Ruby30__reduce_540$396 = function $$_reduce_540(val, _values, result) {
+      $def(self, '$_reduce_552', function $$_reduce_552(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$const_fetch(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_540$396.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_541', $Ruby30__reduce_541$397 = function $$_reduce_541(val, _values, result) {
+      $def(self, '$_reduce_553', function $$_reduce_553(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$const(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_541$397.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_542', $Ruby30__reduce_542$398 = function $$_reduce_542(val, _values, result) {
+      $def(self, '$_reduce_554', function $$_reduce_554(val, _values, result) {
         var $a, $b, self = this, assoc_t = nil, exc_var = nil, exc_list = nil;
 
         
-        $b = val['$[]'](2), $a = Opal.to_ary($b), (assoc_t = ($a[0] == null ? nil : $a[0])), (exc_var = ($a[1] == null ? nil : $a[1])), $b;
+        $b = val['$[]'](2), $a = $to_ary($b), (assoc_t = ($a[0] == null ? nil : $a[0])), (exc_var = ($a[1] == null ? nil : $a[1])), $b;
         if ($truthy(val['$[]'](1))) {
-          exc_list = self.builder.$array(nil, val['$[]'](1), nil)};
-        result = [self.builder.$rescue_body(val['$[]'](0), exc_list, assoc_t, exc_var, val['$[]'](3), val['$[]'](4))].concat(Opal.to_a(val['$[]'](5)));
+          exc_list = self.builder.$array(nil, val['$[]'](1), nil)
+        };
+        result = [self.builder.$rescue_body(val['$[]'](0), exc_list, assoc_t, exc_var, val['$[]'](3), val['$[]'](4))].concat($to_a(val['$[]'](5)));
         return result;
-      }, $Ruby30__reduce_542$398.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_543', $Ruby30__reduce_543$399 = function $$_reduce_543(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_555', function $$_reduce_555(val, _values, result) {
+        
         
         result = [];
         return result;
-      }, $Ruby30__reduce_543$399.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_544', $Ruby30__reduce_544$400 = function $$_reduce_544(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_556', function $$_reduce_556(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_544$400.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_547', $Ruby30__reduce_547$401 = function $$_reduce_547(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_559', function $$_reduce_559(val, _values, result) {
+        
         
         result = [val['$[]'](0), val['$[]'](1)];
         return result;
-      }, $Ruby30__reduce_547$401.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_549', $Ruby30__reduce_549$402 = function $$_reduce_549(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_561', function $$_reduce_561(val, _values, result) {
+        
         
         result = [val['$[]'](0), val['$[]'](1)];
         return result;
-      }, $Ruby30__reduce_549$402.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_553', $Ruby30__reduce_553$403 = function $$_reduce_553(val, _values, result) {
+      $def(self, '$_reduce_565', function $$_reduce_565(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$string_compose(nil, val['$[]'](0), nil);
         return result;
-      }, $Ruby30__reduce_553$403.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_554', $Ruby30__reduce_554$404 = function $$_reduce_554(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_566', function $$_reduce_566(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_554$404.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_555', $Ruby30__reduce_555$405 = function $$_reduce_555(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_567', function $$_reduce_567(val, _values, result) {
+        
         
         result = val['$[]'](0)['$<<'](val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_555$405.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_556', $Ruby30__reduce_556$406 = function $$_reduce_556(val, _values, result) {
+      $def(self, '$_reduce_568', function $$_reduce_568(val, _values, result) {
         var self = this, string = nil;
 
         
         string = self.builder.$string_compose(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         result = self.builder.$dedent_string(string, self.lexer.$dedent_level());
         return result;
-      }, $Ruby30__reduce_556$406.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_557', $Ruby30__reduce_557$407 = function $$_reduce_557(val, _values, result) {
+      $def(self, '$_reduce_569', function $$_reduce_569(val, _values, result) {
         var self = this, string = nil;
 
         
         string = self.builder.$string(val['$[]'](0));
         result = self.builder.$dedent_string(string, self.lexer.$dedent_level());
         return result;
-      }, $Ruby30__reduce_557$407.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_558', $Ruby30__reduce_558$408 = function $$_reduce_558(val, _values, result) {
+      $def(self, '$_reduce_570', function $$_reduce_570(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$character(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_558$408.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_559', $Ruby30__reduce_559$409 = function $$_reduce_559(val, _values, result) {
+      $def(self, '$_reduce_571', function $$_reduce_571(val, _values, result) {
         var self = this, string = nil;
 
         
         string = self.builder.$xstring_compose(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         result = self.builder.$dedent_string(string, self.lexer.$dedent_level());
         return result;
-      }, $Ruby30__reduce_559$409.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_560', $Ruby30__reduce_560$410 = function $$_reduce_560(val, _values, result) {
+      $def(self, '$_reduce_572', function $$_reduce_572(val, _values, result) {
         var self = this, opts = nil;
 
         
         opts = self.builder.$regexp_options(val['$[]'](3));
         result = self.builder.$regexp_compose(val['$[]'](0), val['$[]'](1), val['$[]'](2), opts);
         return result;
-      }, $Ruby30__reduce_560$410.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_561', $Ruby30__reduce_561$411 = function $$_reduce_561(val, _values, result) {
+      $def(self, '$_reduce_573', function $$_reduce_573(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$words_compose(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_561$411.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_562', $Ruby30__reduce_562$412 = function $$_reduce_562(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_574', function $$_reduce_574(val, _values, result) {
+        
         
         result = [];
         return result;
-      }, $Ruby30__reduce_562$412.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_563', $Ruby30__reduce_563$413 = function $$_reduce_563(val, _values, result) {
+      $def(self, '$_reduce_575', function $$_reduce_575(val, _values, result) {
         var self = this;
 
         
         result = val['$[]'](0)['$<<'](self.builder.$word(val['$[]'](1)));
         return result;
-      }, $Ruby30__reduce_563$413.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_564', $Ruby30__reduce_564$414 = function $$_reduce_564(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_576', function $$_reduce_576(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_564$414.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_565', $Ruby30__reduce_565$415 = function $$_reduce_565(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_577', function $$_reduce_577(val, _values, result) {
+        
         
         result = val['$[]'](0)['$<<'](val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_565$415.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_566', $Ruby30__reduce_566$416 = function $$_reduce_566(val, _values, result) {
+      $def(self, '$_reduce_578', function $$_reduce_578(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$symbols_compose(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_566$416.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_567', $Ruby30__reduce_567$417 = function $$_reduce_567(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_579', function $$_reduce_579(val, _values, result) {
+        
         
         result = [];
         return result;
-      }, $Ruby30__reduce_567$417.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_568', $Ruby30__reduce_568$418 = function $$_reduce_568(val, _values, result) {
+      $def(self, '$_reduce_580', function $$_reduce_580(val, _values, result) {
         var self = this;
 
         
         result = val['$[]'](0)['$<<'](self.builder.$word(val['$[]'](1)));
         return result;
-      }, $Ruby30__reduce_568$418.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_569', $Ruby30__reduce_569$419 = function $$_reduce_569(val, _values, result) {
+      $def(self, '$_reduce_581', function $$_reduce_581(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$words_compose(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_569$419.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_570', $Ruby30__reduce_570$420 = function $$_reduce_570(val, _values, result) {
+      $def(self, '$_reduce_582', function $$_reduce_582(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$symbols_compose(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_570$420.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_571', $Ruby30__reduce_571$421 = function $$_reduce_571(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_583', function $$_reduce_583(val, _values, result) {
+        
         
         result = [];
         return result;
-      }, $Ruby30__reduce_571$421.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_572', $Ruby30__reduce_572$422 = function $$_reduce_572(val, _values, result) {
+      $def(self, '$_reduce_584', function $$_reduce_584(val, _values, result) {
         var self = this;
 
         
         result = val['$[]'](0)['$<<'](self.builder.$string_internal(val['$[]'](1)));
         return result;
-      }, $Ruby30__reduce_572$422.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_573', $Ruby30__reduce_573$423 = function $$_reduce_573(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_585', function $$_reduce_585(val, _values, result) {
+        
         
         result = [];
         return result;
-      }, $Ruby30__reduce_573$423.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_574', $Ruby30__reduce_574$424 = function $$_reduce_574(val, _values, result) {
+      $def(self, '$_reduce_586', function $$_reduce_586(val, _values, result) {
         var self = this;
 
         
         result = val['$[]'](0)['$<<'](self.builder.$symbol_internal(val['$[]'](1)));
         return result;
-      }, $Ruby30__reduce_574$424.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_575', $Ruby30__reduce_575$425 = function $$_reduce_575(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_587', function $$_reduce_587(val, _values, result) {
+        
         
         result = [];
         return result;
-      }, $Ruby30__reduce_575$425.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_576', $Ruby30__reduce_576$426 = function $$_reduce_576(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_588', function $$_reduce_588(val, _values, result) {
+        
         
         result = val['$[]'](0)['$<<'](val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_576$426.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_577', $Ruby30__reduce_577$427 = function $$_reduce_577(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_589', function $$_reduce_589(val, _values, result) {
+        
         
         result = [];
         return result;
-      }, $Ruby30__reduce_577$427.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_578', $Ruby30__reduce_578$428 = function $$_reduce_578(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_590', function $$_reduce_590(val, _values, result) {
+        
         
         result = val['$[]'](0)['$<<'](val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_578$428.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_579', $Ruby30__reduce_579$429 = function $$_reduce_579(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_591', function $$_reduce_591(val, _values, result) {
+        
         
         result = [];
         return result;
-      }, $Ruby30__reduce_579$429.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_580', $Ruby30__reduce_580$430 = function $$_reduce_580(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_592', function $$_reduce_592(val, _values, result) {
+        
         
         result = val['$[]'](0)['$<<'](val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_580$430.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_581', $Ruby30__reduce_581$431 = function $$_reduce_581(val, _values, result) {
+      $def(self, '$_reduce_593', function $$_reduce_593(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$string_internal(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_581$431.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_582', $Ruby30__reduce_582$432 = function $$_reduce_582(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_594', function $$_reduce_594(val, _values, result) {
+        
         
         result = val['$[]'](1);
         return result;
-      }, $Ruby30__reduce_582$432.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_583', $Ruby30__reduce_583$433 = function $$_reduce_583(val, _values, result) {
+      $def(self, '$_reduce_595', function $$_reduce_595(val, _values, result) {
         var self = this;
 
         
         self.lexer.$cmdarg().$push(false);
         self.lexer.$cond().$push(false);
         return result;
-      }, $Ruby30__reduce_583$433.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_584', $Ruby30__reduce_584$434 = function $$_reduce_584(val, _values, result) {
+      $def(self, '$_reduce_596', function $$_reduce_596(val, _values, result) {
         var self = this;
 
         
@@ -27952,65 +24760,64 @@ Opal.modules["parser/ruby30"] = function(Opal) {
         self.lexer.$cond().$pop();
         result = self.builder.$begin(val['$[]'](0), val['$[]'](2), val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_584$434.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_585', $Ruby30__reduce_585$435 = function $$_reduce_585(val, _values, result) {
+      $def(self, '$_reduce_597', function $$_reduce_597(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$gvar(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_585$435.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_586', $Ruby30__reduce_586$436 = function $$_reduce_586(val, _values, result) {
+      $def(self, '$_reduce_598', function $$_reduce_598(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$ivar(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_586$436.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_587', $Ruby30__reduce_587$437 = function $$_reduce_587(val, _values, result) {
+      $def(self, '$_reduce_599', function $$_reduce_599(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$cvar(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_587$437.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_591', $Ruby30__reduce_591$438 = function $$_reduce_591(val, _values, result) {
+      $def(self, '$_reduce_603', function $$_reduce_603(val, _values, result) {
         var self = this, $writer = nil;
 
         
         
         $writer = ["expr_end"];
-        $send(self.lexer, 'state=', Opal.to_a($writer));
+        $send(self.lexer, 'state=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         result = self.builder.$symbol(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_591$438.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_592', $Ruby30__reduce_592$439 = function $$_reduce_592(val, _values, result) {
+      $def(self, '$_reduce_604', function $$_reduce_604(val, _values, result) {
         var self = this, $writer = nil;
 
         
         
         $writer = ["expr_end"];
-        $send(self.lexer, 'state=', Opal.to_a($writer));
+        $send(self.lexer, 'state=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         result = self.builder.$symbol_compose(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_592$439.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_593', $Ruby30__reduce_593$440 = function $$_reduce_593(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_605', function $$_reduce_605(val, _values, result) {
+        
         
         result = val['$[]'](0);
         return result;
-      }, $Ruby30__reduce_593$440.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_594', $Ruby30__reduce_594$441 = function $$_reduce_594(val, _values, result) {
+      $def(self, '$_reduce_606', function $$_reduce_606(val, _values, result) {
         var self = this;
 
         
@@ -28020,503 +24827,505 @@ Opal.modules["parser/ruby30"] = function(Opal) {
           result = self.builder.$unary_num(val['$[]'](0), val['$[]'](1))
         };
         return result;
-      }, $Ruby30__reduce_594$441.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_595', $Ruby30__reduce_595$442 = function $$_reduce_595(val, _values, result) {
+      $def(self, '$_reduce_607', function $$_reduce_607(val, _values, result) {
         var self = this, $writer = nil;
 
         
         
         $writer = ["expr_end"];
-        $send(self.lexer, 'state=', Opal.to_a($writer));
+        $send(self.lexer, 'state=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         result = self.builder.$integer(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_595$442.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_596', $Ruby30__reduce_596$443 = function $$_reduce_596(val, _values, result) {
+      $def(self, '$_reduce_608', function $$_reduce_608(val, _values, result) {
         var self = this, $writer = nil;
 
         
         
         $writer = ["expr_end"];
-        $send(self.lexer, 'state=', Opal.to_a($writer));
+        $send(self.lexer, 'state=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         result = self.builder.$float(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_596$443.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_597', $Ruby30__reduce_597$444 = function $$_reduce_597(val, _values, result) {
+      $def(self, '$_reduce_609', function $$_reduce_609(val, _values, result) {
         var self = this, $writer = nil;
 
         
         
         $writer = ["expr_end"];
-        $send(self.lexer, 'state=', Opal.to_a($writer));
+        $send(self.lexer, 'state=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         result = self.builder.$rational(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_597$444.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_598', $Ruby30__reduce_598$445 = function $$_reduce_598(val, _values, result) {
+      $def(self, '$_reduce_610', function $$_reduce_610(val, _values, result) {
         var self = this, $writer = nil;
 
         
         
         $writer = ["expr_end"];
-        $send(self.lexer, 'state=', Opal.to_a($writer));
+        $send(self.lexer, 'state=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         result = self.builder.$complex(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_598$445.$$arity = 3);
+      }, 3);
+      
+      $def(self, '$_reduce_611', function $$_reduce_611(val, _values, result) {
+        var self = this;
+
+        
+        result = self.builder.$ivar(val['$[]'](0));
+        return result;
+      }, 3);
+      
+      $def(self, '$_reduce_612', function $$_reduce_612(val, _values, result) {
+        var self = this;
+
+        
+        result = self.builder.$gvar(val['$[]'](0));
+        return result;
+      }, 3);
+      
+      $def(self, '$_reduce_613', function $$_reduce_613(val, _values, result) {
+        var self = this;
+
+        
+        result = self.builder.$cvar(val['$[]'](0));
+        return result;
+      }, 3);
       
-      Opal.def(self, '$_reduce_599', $Ruby30__reduce_599$446 = function $$_reduce_599(val, _values, result) {
+      $def(self, '$_reduce_614', function $$_reduce_614(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$ident(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_599$446.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_600', $Ruby30__reduce_600$447 = function $$_reduce_600(val, _values, result) {
+      $def(self, '$_reduce_615', function $$_reduce_615(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$ivar(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_600$447.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_601', $Ruby30__reduce_601$448 = function $$_reduce_601(val, _values, result) {
+      $def(self, '$_reduce_616', function $$_reduce_616(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$gvar(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_601$448.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_602', $Ruby30__reduce_602$449 = function $$_reduce_602(val, _values, result) {
+      $def(self, '$_reduce_617', function $$_reduce_617(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$const(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_602$449.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_603', $Ruby30__reduce_603$450 = function $$_reduce_603(val, _values, result) {
+      $def(self, '$_reduce_618', function $$_reduce_618(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$cvar(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_603$450.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_604', $Ruby30__reduce_604$451 = function $$_reduce_604(val, _values, result) {
+      $def(self, '$_reduce_619', function $$_reduce_619(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$nil(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_604$451.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_605', $Ruby30__reduce_605$452 = function $$_reduce_605(val, _values, result) {
+      $def(self, '$_reduce_620', function $$_reduce_620(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$self(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_605$452.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_606', $Ruby30__reduce_606$453 = function $$_reduce_606(val, _values, result) {
+      $def(self, '$_reduce_621', function $$_reduce_621(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$true(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_606$453.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_607', $Ruby30__reduce_607$454 = function $$_reduce_607(val, _values, result) {
+      $def(self, '$_reduce_622', function $$_reduce_622(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$false(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_607$454.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_608', $Ruby30__reduce_608$455 = function $$_reduce_608(val, _values, result) {
+      $def(self, '$_reduce_623', function $$_reduce_623(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$__FILE__(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_608$455.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_609', $Ruby30__reduce_609$456 = function $$_reduce_609(val, _values, result) {
+      $def(self, '$_reduce_624', function $$_reduce_624(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$__LINE__(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_609$456.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_610', $Ruby30__reduce_610$457 = function $$_reduce_610(val, _values, result) {
+      $def(self, '$_reduce_625', function $$_reduce_625(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$__ENCODING__(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_610$457.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_611', $Ruby30__reduce_611$458 = function $$_reduce_611(val, _values, result) {
+      $def(self, '$_reduce_626', function $$_reduce_626(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$accessible(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_611$458.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_612', $Ruby30__reduce_612$459 = function $$_reduce_612(val, _values, result) {
+      $def(self, '$_reduce_627', function $$_reduce_627(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$accessible(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_612$459.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_613', $Ruby30__reduce_613$460 = function $$_reduce_613(val, _values, result) {
+      $def(self, '$_reduce_628', function $$_reduce_628(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$assignable(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_613$460.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_614', $Ruby30__reduce_614$461 = function $$_reduce_614(val, _values, result) {
+      $def(self, '$_reduce_629', function $$_reduce_629(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$assignable(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_614$461.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_615', $Ruby30__reduce_615$462 = function $$_reduce_615(val, _values, result) {
+      $def(self, '$_reduce_630', function $$_reduce_630(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$nth_ref(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_615$462.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_616', $Ruby30__reduce_616$463 = function $$_reduce_616(val, _values, result) {
+      $def(self, '$_reduce_631', function $$_reduce_631(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$back_ref(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_616$463.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_617', $Ruby30__reduce_617$464 = function $$_reduce_617(val, _values, result) {
+      $def(self, '$_reduce_632', function $$_reduce_632(val, _values, result) {
         var self = this, $writer = nil;
 
         
         
         $writer = ["expr_value"];
-        $send(self.lexer, 'state=', Opal.to_a($writer));
+        $send(self.lexer, 'state=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_617$464.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_618', $Ruby30__reduce_618$465 = function $$_reduce_618(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_633', function $$_reduce_633(val, _values, result) {
+        
         
         result = [val['$[]'](0), val['$[]'](2)];
         return result;
-      }, $Ruby30__reduce_618$465.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_619', $Ruby30__reduce_619$466 = function $$_reduce_619(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_634', function $$_reduce_634(val, _values, result) {
+        
         
         result = nil;
         return result;
-      }, $Ruby30__reduce_619$466.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_621', $Ruby30__reduce_621$467 = function $$_reduce_621(val, _values, result) {
-        var self = this;
+      $def(self, '$_reduce_636', function $$_reduce_636(val, _values, result) {
+        var self = this, $writer = nil;
 
         
+        
+        $writer = [false];
+        $send(self.context, 'in_argdef=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
         result = self.builder.$args(nil, [], nil);
         return result;
-      }, $Ruby30__reduce_621$467.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_622', $Ruby30__reduce_622$468 = function $$_reduce_622(val, _values, result) {
+      $def(self, '$_reduce_637', function $$_reduce_637(val, _values, result) {
         var self = this, $writer = nil;
 
         
         result = self.builder.$args(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         
         $writer = ["expr_value"];
-        $send(self.lexer, 'state=', Opal.to_a($writer));
+        $send(self.lexer, 'state=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
-        return result;
-      }, $Ruby30__reduce_622$468.$$arity = 3);
-      
-      Opal.def(self, '$_reduce_623', $Ruby30__reduce_623$469 = function $$_reduce_623(val, _values, result) {
-        var self = this, args = nil;
-
         
-        args = [].concat(Opal.to_a(val['$[]'](1))).concat([self.builder.$forward_arg(val['$[]'](3))]);
-        result = self.builder.$args(val['$[]'](0), args, val['$[]'](4));
-        self.static_env.$declare_forward_args();
+        $writer = [false];
+        $send(self.context, 'in_argdef=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_623$469.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_624', $Ruby30__reduce_624$470 = function $$_reduce_624(val, _values, result) {
+      $def(self, '$_reduce_639', function $$_reduce_639(val, _values, result) {
         var self = this, $writer = nil;
 
         
-        result = self.builder.$forward_only_args(val['$[]'](0), val['$[]'](1), val['$[]'](2));
-        self.static_env.$declare_forward_args();
+        result = self.context.$dup();
         
-        $writer = ["expr_value"];
-        $send(self.lexer, 'state=', Opal.to_a($writer));
+        $writer = [true];
+        $send(self.context, 'in_kwarg=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
-        return result;
-      }, $Ruby30__reduce_624$470.$$arity = 3);
-      
-      Opal.def(self, '$_reduce_626', $Ruby30__reduce_626$471 = function $$_reduce_626(val, _values, result) {
-        var self = this, $writer = nil;
-
-        
-        result = self.context.$in_kwarg();
         
         $writer = [true];
-        $send(self.context, 'in_kwarg=', Opal.to_a($writer));
+        $send(self.context, 'in_argdef=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_626$471.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_627', $Ruby30__reduce_627$472 = function $$_reduce_627(val, _values, result) {
+      $def(self, '$_reduce_640', function $$_reduce_640(val, _values, result) {
         var self = this, $writer = nil;
 
         
         
-        $writer = [val['$[]'](0)];
-        $send(self.context, 'in_kwarg=', Opal.to_a($writer));
+        $writer = [val['$[]'](0).$in_kwarg()];
+        $send(self.context, 'in_kwarg=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
+        
+        $writer = [false];
+        $send(self.context, 'in_argdef=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         result = self.builder.$args(nil, val['$[]'](1), nil);
         return result;
-      }, $Ruby30__reduce_627$472.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_628', $Ruby30__reduce_628$473 = function $$_reduce_628(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_641', function $$_reduce_641(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_628$473.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_629', $Ruby30__reduce_629$474 = function $$_reduce_629(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_642', function $$_reduce_642(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_629$474.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_630', $Ruby30__reduce_630$475 = function $$_reduce_630(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_643', function $$_reduce_643(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_630$475.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_631', $Ruby30__reduce_631$476 = function $$_reduce_631(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_644', function $$_reduce_644(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_631$476.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_632', $Ruby30__reduce_632$477 = function $$_reduce_632(val, _values, result) {
+      $def(self, '$_reduce_645', function $$_reduce_645(val, _values, result) {
         var self = this;
 
         
+        self.static_env.$declare_forward_args();
+        result = [self.builder.$forward_arg(val['$[]'](0))];
+        return result;
+      }, 3);
+      
+      $def(self, '$_reduce_646', function $$_reduce_646(val, _values, result) {
+        
+        
         result = val['$[]'](1);
         return result;
-      }, $Ruby30__reduce_632$477.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_633', $Ruby30__reduce_633$478 = function $$_reduce_633(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_647', function $$_reduce_647(val, _values, result) {
+        
         
         result = [];
         return result;
-      }, $Ruby30__reduce_633$478.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_634', $Ruby30__reduce_634$479 = function $$_reduce_634(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_648', function $$_reduce_648(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](4)).$concat(val['$[]'](5));
         return result;
-      }, $Ruby30__reduce_634$479.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_635', $Ruby30__reduce_635$480 = function $$_reduce_635(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_649', function $$_reduce_649(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](4)).$concat(val['$[]'](6)).$concat(val['$[]'](7));
         return result;
-      }, $Ruby30__reduce_635$480.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_636', $Ruby30__reduce_636$481 = function $$_reduce_636(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_650', function $$_reduce_650(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_636$481.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_637', $Ruby30__reduce_637$482 = function $$_reduce_637(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_651', function $$_reduce_651(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](4)).$concat(val['$[]'](5));
         return result;
-      }, $Ruby30__reduce_637$482.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_638', $Ruby30__reduce_638$483 = function $$_reduce_638(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_652', function $$_reduce_652(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_638$483.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_639', $Ruby30__reduce_639$484 = function $$_reduce_639(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_653', function $$_reduce_653(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](4)).$concat(val['$[]'](5));
         return result;
-      }, $Ruby30__reduce_639$484.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_640', $Ruby30__reduce_640$485 = function $$_reduce_640(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_654', function $$_reduce_654(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_640$485.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_641', $Ruby30__reduce_641$486 = function $$_reduce_641(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_655', function $$_reduce_655(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_641$486.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_642', $Ruby30__reduce_642$487 = function $$_reduce_642(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_656', function $$_reduce_656(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](4)).$concat(val['$[]'](5));
         return result;
-      }, $Ruby30__reduce_642$487.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_643', $Ruby30__reduce_643$488 = function $$_reduce_643(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_657', function $$_reduce_657(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_643$488.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_644', $Ruby30__reduce_644$489 = function $$_reduce_644(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_658', function $$_reduce_658(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_644$489.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_645', $Ruby30__reduce_645$490 = function $$_reduce_645(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_659', function $$_reduce_659(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_645$490.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_646', $Ruby30__reduce_646$491 = function $$_reduce_646(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_660', function $$_reduce_660(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_646$491.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_647', $Ruby30__reduce_647$492 = function $$_reduce_647(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_661', function $$_reduce_661(val, _values, result) {
+        
         
         result = val['$[]'](0);
         return result;
-      }, $Ruby30__reduce_647$492.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_648', $Ruby30__reduce_648$493 = function $$_reduce_648(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_662', function $$_reduce_662(val, _values, result) {
+        
         
         result = [];
         return result;
-      }, $Ruby30__reduce_648$493.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_649', $Ruby30__reduce_649$494 = function $$_reduce_649(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_663', function $$_reduce_663(val, _values, result) {
+        
         
         result = val['$[]'](0);
         return result;
-      }, $Ruby30__reduce_649$494.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_650', $Ruby30__reduce_650$495 = function $$_reduce_650(val, _values, result) {
+      $def(self, '$_reduce_664', function $$_reduce_664(val, _values, result) {
         var self = this;
 
         
         self.$diagnostic("error", "argument_const", nil, val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_650$495.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_651', $Ruby30__reduce_651$496 = function $$_reduce_651(val, _values, result) {
+      $def(self, '$_reduce_665', function $$_reduce_665(val, _values, result) {
         var self = this;
 
         
         self.$diagnostic("error", "argument_ivar", nil, val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_651$496.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_652', $Ruby30__reduce_652$497 = function $$_reduce_652(val, _values, result) {
+      $def(self, '$_reduce_666', function $$_reduce_666(val, _values, result) {
         var self = this;
 
         
         self.$diagnostic("error", "argument_gvar", nil, val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_652$497.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_653', $Ruby30__reduce_653$498 = function $$_reduce_653(val, _values, result) {
+      $def(self, '$_reduce_667', function $$_reduce_667(val, _values, result) {
         var self = this;
 
         
         self.$diagnostic("error", "argument_cvar", nil, val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_653$498.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_655', $Ruby30__reduce_655$499 = function $$_reduce_655(val, _values, result) {
+      $def(self, '$_reduce_669', function $$_reduce_669(val, _values, result) {
         var self = this;
 
         
@@ -28524,384 +25333,402 @@ Opal.modules["parser/ruby30"] = function(Opal) {
         self.max_numparam_stack['$has_ordinary_params!']();
         result = val['$[]'](0);
         return result;
-      }, $Ruby30__reduce_655$499.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_656', $Ruby30__reduce_656$500 = function $$_reduce_656(val, _values, result) {
+      $def(self, '$_reduce_670', function $$_reduce_670(val, _values, result) {
         var self = this;
 
         
         self.current_arg_stack.$set(val['$[]'](0)['$[]'](0));
         result = val['$[]'](0);
         return result;
-      }, $Ruby30__reduce_656$500.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_657', $Ruby30__reduce_657$501 = function $$_reduce_657(val, _values, result) {
+      $def(self, '$_reduce_671', function $$_reduce_671(val, _values, result) {
         var self = this;
 
         
         self.current_arg_stack.$set(0);
         result = self.builder.$arg(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_657$501.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_658', $Ruby30__reduce_658$502 = function $$_reduce_658(val, _values, result) {
+      $def(self, '$_reduce_672', function $$_reduce_672(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$multi_lhs(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_658$502.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_659', $Ruby30__reduce_659$503 = function $$_reduce_659(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_673', function $$_reduce_673(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_659$503.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_660', $Ruby30__reduce_660$504 = function $$_reduce_660(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_674', function $$_reduce_674(val, _values, result) {
+        
         
         result = val['$[]'](0)['$<<'](val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_660$504.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_661', $Ruby30__reduce_661$505 = function $$_reduce_661(val, _values, result) {
-        var self = this;
+      $def(self, '$_reduce_675', function $$_reduce_675(val, _values, result) {
+        var self = this, $writer = nil;
 
         
         self.$check_kwarg_name(val['$[]'](0));
         self.static_env.$declare(val['$[]'](0)['$[]'](0));
         self.max_numparam_stack['$has_ordinary_params!']();
         self.current_arg_stack.$set(val['$[]'](0)['$[]'](0));
+        
+        $writer = [false];
+        $send(self.context, 'in_argdef=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
         result = val['$[]'](0);
         return result;
-      }, $Ruby30__reduce_661$505.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_662', $Ruby30__reduce_662$506 = function $$_reduce_662(val, _values, result) {
-        var self = this;
+      $def(self, '$_reduce_676', function $$_reduce_676(val, _values, result) {
+        var self = this, $writer = nil;
 
         
         self.current_arg_stack.$set(nil);
+        
+        $writer = [true];
+        $send(self.context, 'in_argdef=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
         result = self.builder.$kwoptarg(val['$[]'](0), val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_662$506.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_663', $Ruby30__reduce_663$507 = function $$_reduce_663(val, _values, result) {
-        var self = this;
+      $def(self, '$_reduce_677', function $$_reduce_677(val, _values, result) {
+        var self = this, $writer = nil;
 
         
         self.current_arg_stack.$set(nil);
+        
+        $writer = [true];
+        $send(self.context, 'in_argdef=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
         result = self.builder.$kwarg(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_663$507.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_664', $Ruby30__reduce_664$508 = function $$_reduce_664(val, _values, result) {
-        var self = this;
+      $def(self, '$_reduce_678', function $$_reduce_678(val, _values, result) {
+        var self = this, $writer = nil;
 
         
+        
+        $writer = [true];
+        $send(self.context, 'in_argdef=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
         result = self.builder.$kwoptarg(val['$[]'](0), val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_664$508.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_665', $Ruby30__reduce_665$509 = function $$_reduce_665(val, _values, result) {
-        var self = this;
+      $def(self, '$_reduce_679', function $$_reduce_679(val, _values, result) {
+        var self = this, $writer = nil;
 
         
+        
+        $writer = [true];
+        $send(self.context, 'in_argdef=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
         result = self.builder.$kwarg(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_665$509.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_666', $Ruby30__reduce_666$510 = function $$_reduce_666(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_680', function $$_reduce_680(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_666$510.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_667', $Ruby30__reduce_667$511 = function $$_reduce_667(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_681', function $$_reduce_681(val, _values, result) {
+        
         
         result = val['$[]'](0)['$<<'](val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_667$511.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_668', $Ruby30__reduce_668$512 = function $$_reduce_668(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_682', function $$_reduce_682(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_668$512.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_669', $Ruby30__reduce_669$513 = function $$_reduce_669(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_683', function $$_reduce_683(val, _values, result) {
+        
         
         result = val['$[]'](0)['$<<'](val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_669$513.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_672', $Ruby30__reduce_672$514 = function $$_reduce_672(val, _values, result) {
+      $def(self, '$_reduce_686', function $$_reduce_686(val, _values, result) {
         var self = this;
 
         
         result = [self.builder.$kwnilarg(val['$[]'](0), val['$[]'](1))];
         return result;
-      }, $Ruby30__reduce_672$514.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_673', $Ruby30__reduce_673$515 = function $$_reduce_673(val, _values, result) {
+      $def(self, '$_reduce_687', function $$_reduce_687(val, _values, result) {
         var self = this;
 
         
         self.static_env.$declare(val['$[]'](1)['$[]'](0));
         result = [self.builder.$kwrestarg(val['$[]'](0), val['$[]'](1))];
         return result;
-      }, $Ruby30__reduce_673$515.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_674', $Ruby30__reduce_674$516 = function $$_reduce_674(val, _values, result) {
+      $def(self, '$_reduce_688', function $$_reduce_688(val, _values, result) {
         var self = this;
 
         
         result = [self.builder.$kwrestarg(val['$[]'](0))];
         return result;
-      }, $Ruby30__reduce_674$516.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_675', $Ruby30__reduce_675$517 = function $$_reduce_675(val, _values, result) {
-        var self = this;
+      $def(self, '$_reduce_689', function $$_reduce_689(val, _values, result) {
+        var self = this, $writer = nil;
 
         
         self.current_arg_stack.$set(0);
+        
+        $writer = [true];
+        $send(self.context, 'in_argdef=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
         result = self.builder.$optarg(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_675$517.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_676', $Ruby30__reduce_676$518 = function $$_reduce_676(val, _values, result) {
-        var self = this;
+      $def(self, '$_reduce_690', function $$_reduce_690(val, _values, result) {
+        var self = this, $writer = nil;
 
         
         self.current_arg_stack.$set(0);
+        
+        $writer = [true];
+        $send(self.context, 'in_argdef=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
         result = self.builder.$optarg(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_676$518.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_677', $Ruby30__reduce_677$519 = function $$_reduce_677(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_691', function $$_reduce_691(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_677$519.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_678', $Ruby30__reduce_678$520 = function $$_reduce_678(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_692', function $$_reduce_692(val, _values, result) {
+        
         
         result = val['$[]'](0)['$<<'](val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_678$520.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_679', $Ruby30__reduce_679$521 = function $$_reduce_679(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_693', function $$_reduce_693(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_679$521.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_680', $Ruby30__reduce_680$522 = function $$_reduce_680(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_694', function $$_reduce_694(val, _values, result) {
+        
         
         result = val['$[]'](0)['$<<'](val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_680$522.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_683', $Ruby30__reduce_683$523 = function $$_reduce_683(val, _values, result) {
+      $def(self, '$_reduce_697', function $$_reduce_697(val, _values, result) {
         var self = this;
 
         
         self.static_env.$declare(val['$[]'](1)['$[]'](0));
         result = [self.builder.$restarg(val['$[]'](0), val['$[]'](1))];
         return result;
-      }, $Ruby30__reduce_683$523.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_684', $Ruby30__reduce_684$524 = function $$_reduce_684(val, _values, result) {
+      $def(self, '$_reduce_698', function $$_reduce_698(val, _values, result) {
         var self = this;
 
         
         result = [self.builder.$restarg(val['$[]'](0))];
         return result;
-      }, $Ruby30__reduce_684$524.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_687', $Ruby30__reduce_687$525 = function $$_reduce_687(val, _values, result) {
+      $def(self, '$_reduce_701', function $$_reduce_701(val, _values, result) {
         var self = this;
 
         
         self.static_env.$declare(val['$[]'](1)['$[]'](0));
         result = self.builder.$blockarg(val['$[]'](0), val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_687$525.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_688', $Ruby30__reduce_688$526 = function $$_reduce_688(val, _values, result) {
+      $def(self, '$_reduce_702', function $$_reduce_702(val, _values, result) {
         var self = this;
 
         
+        self.static_env.$declare_anonymous_blockarg();
+        result = self.builder.$blockarg(val['$[]'](0), nil);
+        return result;
+      }, 3);
+      
+      $def(self, '$_reduce_703', function $$_reduce_703(val, _values, result) {
+        
+        
         result = [val['$[]'](1)];
         return result;
-      }, $Ruby30__reduce_688$526.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_689', $Ruby30__reduce_689$527 = function $$_reduce_689(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_704', function $$_reduce_704(val, _values, result) {
+        
         
         result = [];
         return result;
-      }, $Ruby30__reduce_689$527.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_691', $Ruby30__reduce_691$528 = function $$_reduce_691(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_706', function $$_reduce_706(val, _values, result) {
+        
         
         result = val['$[]'](1);
         return result;
-      }, $Ruby30__reduce_691$528.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_692', $Ruby30__reduce_692$529 = function $$_reduce_692(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_707', function $$_reduce_707(val, _values, result) {
+        
         
         result = [];
         return result;
-      }, $Ruby30__reduce_692$529.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_694', $Ruby30__reduce_694$530 = function $$_reduce_694(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_709', function $$_reduce_709(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_694$530.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_695', $Ruby30__reduce_695$531 = function $$_reduce_695(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_710', function $$_reduce_710(val, _values, result) {
+        
         
         result = val['$[]'](0)['$<<'](val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_695$531.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_696', $Ruby30__reduce_696$532 = function $$_reduce_696(val, _values, result) {
+      $def(self, '$_reduce_711', function $$_reduce_711(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$pair(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_696$532.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_697', $Ruby30__reduce_697$533 = function $$_reduce_697(val, _values, result) {
+      $def(self, '$_reduce_712', function $$_reduce_712(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$pair_keyword(val['$[]'](0), val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_697$533.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_698', $Ruby30__reduce_698$534 = function $$_reduce_698(val, _values, result) {
+      $def(self, '$_reduce_713', function $$_reduce_713(val, _values, result) {
         var self = this;
 
         
-        result = self.builder.$pair_quoted(val['$[]'](0), val['$[]'](1), val['$[]'](2), val['$[]'](3));
+        result = self.builder.$pair_label(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_698$534.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_699', $Ruby30__reduce_699$535 = function $$_reduce_699(val, _values, result) {
+      $def(self, '$_reduce_714', function $$_reduce_714(val, _values, result) {
         var self = this;
 
         
-        result = self.builder.$kwsplat(val['$[]'](0), val['$[]'](1));
+        result = self.builder.$pair_quoted(val['$[]'](0), val['$[]'](1), val['$[]'](2), val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_699$535.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_712', $Ruby30__reduce_712$536 = function $$_reduce_712(val, _values, result) {
+      $def(self, '$_reduce_715', function $$_reduce_715(val, _values, result) {
         var self = this;
 
         
+        result = self.builder.$kwsplat(val['$[]'](0), val['$[]'](1));
+        return result;
+      }, 3);
+      
+      $def(self, '$_reduce_728', function $$_reduce_728(val, _values, result) {
+        
+        
         result = ["dot", val['$[]'](0)['$[]'](1)];
         return result;
-      }, $Ruby30__reduce_712$536.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_713', $Ruby30__reduce_713$537 = function $$_reduce_713(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_729', function $$_reduce_729(val, _values, result) {
+        
         
         result = ["anddot", val['$[]'](0)['$[]'](1)];
         return result;
-      }, $Ruby30__reduce_713$537.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_718', $Ruby30__reduce_718$538 = function $$_reduce_718(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_734', function $$_reduce_734(val, _values, result) {
+        
         
         result = val['$[]'](1);
         return result;
-      }, $Ruby30__reduce_718$538.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_719', $Ruby30__reduce_719$539 = function $$_reduce_719(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_735', function $$_reduce_735(val, _values, result) {
+        
         
         result = val['$[]'](1);
         return result;
-      }, $Ruby30__reduce_719$539.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_720', $Ruby30__reduce_720$540 = function $$_reduce_720(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_736', function $$_reduce_736(val, _values, result) {
+        
         
         result = val['$[]'](1);
         return result;
-      }, $Ruby30__reduce_720$540.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_724', $Ruby30__reduce_724$541 = function $$_reduce_724(val, _values, result) {
+      $def(self, '$_reduce_740', function $$_reduce_740(val, _values, result) {
         var self = this;
 
         
         self.$yyerrok();
         return result;
-      }, $Ruby30__reduce_724$541.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_728', $Ruby30__reduce_728$542 = function $$_reduce_728(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_744', function $$_reduce_744(val, _values, result) {
+        
         
         result = nil;
         return result;
-      }, $Ruby30__reduce_728$542.$$arity = 3);
-      return (Opal.def(self, '$_reduce_none', $Ruby30__reduce_none$543 = function $$_reduce_none(val, _values, result) {
-        var self = this;
-
+      }, 3);
+      return $def(self, '$_reduce_none', function $$_reduce_none(val, _values, result) {
+        
         return val['$[]'](0)
-      }, $Ruby30__reduce_none$543.$$arity = 3), nil) && '_reduce_none';
-    })($nesting[0], $$$($$($nesting, 'Parser'), 'Base'), $nesting)
+      }, 3);
+    })($nesting[0], $$$($$('Parser'), 'Base'), $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/ast/builder"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $hash2 = Opal.hash2;
+Opal.modules["opal/ast/builder"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $Opal = Opal.Opal, $hash2 = Opal.hash2, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$emit_lambda=', '$-', '$new']);
+  Opal.add_stubs('require,emit_lambda=,-,new');
   
   self.$require("opal/ast/node");
-  self.$require("parser/ruby30");
+  self.$require("parser/ruby31");
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Opal');
 
@@ -28912,37 +25739,29 @@ Opal.modules["opal/ast/builder"] = function(Opal) {
 
       var $nesting = [self].concat($parent_nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'Builder');
 
-        var $nesting = [self].concat($parent_nesting), $Builder_n$1, $writer = nil;
+        var $writer = nil;
 
         
         
         $writer = [true];
-        $send(self, 'emit_lambda=', Opal.to_a($writer));
+        $send(self, 'emit_lambda=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
-        return (Opal.def(self, '$n', $Builder_n$1 = function $$n(type, children, location) {
-          var self = this;
-
-          return $$$($$$($$$('::', 'Opal'), 'AST'), 'Node').$new(type, children, $hash2(["location"], {"location": location}))
-        }, $Builder_n$1.$$arity = 3), nil) && 'n';
-      })($nesting[0], $$$($$$($$$('::', 'Parser'), 'Builders'), 'Default'), $nesting)
+        return $def(self, '$n', function $$n(type, children, location) {
+          
+          return $$$($$$($Opal, 'AST'), 'Node').$new(type, children, $hash2(["location"], {"location": location}))
+        }, 3);
+      })($nesting[0], $$$($$$($$$('Parser'), 'Builders'), 'Default'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/rewriters/base"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $hash2 = Opal.hash2, $alias = Opal.alias, $send = Opal.send, $send2 = Opal.send2, $find_super = Opal.find_super;
-
-  Opal.add_stubs(['$require', '$new', '$current_node', '$loc', '$+', '$stmts_of', '$begin_with_stmts', '$nil?', '$include?', '$type', '$children', '$length', '$===', '$[]', '$s', '$attr_accessor', '$current_node=', '$-', '$location=', '$raise']);
+Opal.modules["opal/rewriters/base"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $def = Opal.def, $const_set = Opal.const_set, $truthy = Opal.truthy, $Opal = Opal.Opal, $hash2 = Opal.hash2, $defs = Opal.defs, $alias = Opal.alias, $rb_plus = Opal.rb_plus, $eqeqeq = Opal.eqeqeq, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $send2 = Opal.send2, $find_super = Opal.find_super;
+
+  Opal.add_stubs('require,new,current_node,loc,+,stmts_of,begin_with_stmts,nil?,include?,type,children,===,length,[],s,attr_accessor,current_node=,-,location=,raise,process_regular_node,[]=,meta');
   
   self.$require("parser");
   self.$require("opal/ast/node");
@@ -28959,121 +25778,111 @@ Opal.modules["opal/rewriters/base"] = function(Opal) {
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'Base');
 
-        var $nesting = [self].concat($parent_nesting), $Base_s$9, $Base_s$10, $Base_prepend_to_body$11, $Base_append_to_body$12, $Base_stmts_of$13, $Base_begin_with_stmts$14, $Base_process$15, $Base_error$16;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
+        $proto.dynamic_cache_result = nil;
         
         (function($base, $super, $parent_nesting) {
           var self = $klass($base, $super, 'DummyLocation');
 
-          var $nesting = [self].concat($parent_nesting), $DummyLocation_node$eq$1, $DummyLocation_expression$2, $DummyLocation_begin_pos$3, $DummyLocation_end_pos$4, $DummyLocation_source$5, $DummyLocation_line$6, $DummyLocation_column$7, $DummyLocation_last_line$8;
+          var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
           
           
-          Opal.def(self, '$node=', $DummyLocation_node$eq$1 = function($a) {
-            var $post_args, self = this;
+          $def(self, '$node=', function $DummyLocation_node$eq$1($a) {
+            var $post_args, $rest_arg;
 
             
             
-            $post_args = Opal.slice.call(arguments, 0, arguments.length);
-            ;
+            $post_args = Opal.slice.call(arguments);
+            
+            $rest_arg = $post_args;;
             return nil;
-          }, $DummyLocation_node$eq$1.$$arity = -1);
+          }, -1);
           
-          Opal.def(self, '$expression', $DummyLocation_expression$2 = function $$expression() {
+          $def(self, '$expression', function $$expression() {
             var self = this;
 
             return self
-          }, $DummyLocation_expression$2.$$arity = 0);
+          }, 0);
           
-          Opal.def(self, '$begin_pos', $DummyLocation_begin_pos$3 = function $$begin_pos() {
-            var self = this;
-
+          $def(self, '$begin_pos', function $$begin_pos() {
+            
             return 0
-          }, $DummyLocation_begin_pos$3.$$arity = 0);
+          }, 0);
           
-          Opal.def(self, '$end_pos', $DummyLocation_end_pos$4 = function $$end_pos() {
-            var self = this;
-
+          $def(self, '$end_pos', function $$end_pos() {
+            
             return 0
-          }, $DummyLocation_end_pos$4.$$arity = 0);
+          }, 0);
           
-          Opal.def(self, '$source', $DummyLocation_source$5 = function $$source() {
-            var self = this;
-
+          $def(self, '$source', function $$source() {
+            
             return ""
-          }, $DummyLocation_source$5.$$arity = 0);
+          }, 0);
           
-          Opal.def(self, '$line', $DummyLocation_line$6 = function $$line() {
-            var self = this;
-
+          $def(self, '$line', function $$line() {
+            
             return 0
-          }, $DummyLocation_line$6.$$arity = 0);
+          }, 0);
           
-          Opal.def(self, '$column', $DummyLocation_column$7 = function $$column() {
-            var self = this;
-
+          $def(self, '$column', function $$column() {
+            
             return 0
-          }, $DummyLocation_column$7.$$arity = 0);
-          return (Opal.def(self, '$last_line', $DummyLocation_last_line$8 = function $$last_line() {
-            var self = this;
-
-            return $$$($$($nesting, 'Float'), 'INFINITY')
-          }, $DummyLocation_last_line$8.$$arity = 0), nil) && 'last_line';
+          }, 0);
+          return $def(self, '$last_line', function $$last_line() {
+            
+            return $$$($$('Float'), 'INFINITY')
+          }, 0);
         })($nesting[0], null, $nesting);
-        Opal.const_set($nesting[0], 'DUMMY_LOCATION', $$($nesting, 'DummyLocation').$new());
+        $const_set($nesting[0], 'DUMMY_LOCATION', $$('DummyLocation').$new());
         
-        Opal.def(self, '$s', $Base_s$9 = function $$s(type, $a) {
+        $def(self, '$s', function $$s(type, $a) {
           var $post_args, children, self = this, loc = nil;
 
           
           
-          $post_args = Opal.slice.call(arguments, 1, arguments.length);
+          $post_args = Opal.slice.call(arguments, 1);
           
           children = $post_args;;
-          loc = (function() {if ($truthy(self.$current_node())) {
-            return self.$current_node().$loc()
-          } else {
-            return $$($nesting, 'DUMMY_LOCATION')
-          }; return nil; })();
-          return $$$($$$($$$('::', 'Opal'), 'AST'), 'Node').$new(type, children, $hash2(["location"], {"location": loc}));
-        }, $Base_s$9.$$arity = -2);
-        Opal.defs(self, '$s', $Base_s$10 = function $$s(type, $a) {
-          var $post_args, children, self = this;
+          loc = ($truthy(self.$current_node()) ? (self.$current_node().$loc()) : ($$('DUMMY_LOCATION')));
+          return $$$($$$($Opal, 'AST'), 'Node').$new(type, children, $hash2(["location"], {"location": loc}));
+        }, -2);
+        $defs(self, '$s', function $$s(type, $a) {
+          var $post_args, children;
 
           
           
-          $post_args = Opal.slice.call(arguments, 1, arguments.length);
+          $post_args = Opal.slice.call(arguments, 1);
           
           children = $post_args;;
-          return $$$($$$($$$('::', 'Opal'), 'AST'), 'Node').$new(type, children, $hash2(["location"], {"location": $$($nesting, 'DUMMY_LOCATION')}));
-        }, $Base_s$10.$$arity = -2);
+          return $$$($$$($Opal, 'AST'), 'Node').$new(type, children, $hash2(["location"], {"location": $$('DUMMY_LOCATION')}));
+        }, -2);
         $alias(self, "on_iter", "process_regular_node");
-        $alias(self, "on_top", "process_regular_node");
         $alias(self, "on_zsuper", "process_regular_node");
         $alias(self, "on_jscall", "on_send");
         $alias(self, "on_jsattr", "process_regular_node");
         $alias(self, "on_jsattrasgn", "process_regular_node");
         $alias(self, "on_kwsplat", "process_regular_node");
         
-        Opal.def(self, '$prepend_to_body', $Base_prepend_to_body$11 = function $$prepend_to_body(body, node) {
+        $def(self, '$prepend_to_body', function $$prepend_to_body(body, node) {
           var self = this, stmts = nil;
 
           
           stmts = $rb_plus(self.$stmts_of(node), self.$stmts_of(body));
           return self.$begin_with_stmts(stmts);
-        }, $Base_prepend_to_body$11.$$arity = 2);
+        }, 2);
         
-        Opal.def(self, '$append_to_body', $Base_append_to_body$12 = function $$append_to_body(body, node) {
+        $def(self, '$append_to_body', function $$append_to_body(body, node) {
           var self = this, stmts = nil;
 
           
           stmts = $rb_plus(self.$stmts_of(body), self.$stmts_of(node));
           return self.$begin_with_stmts(stmts);
-        }, $Base_append_to_body$12.$$arity = 2);
+        }, 2);
         
-        Opal.def(self, '$stmts_of', $Base_stmts_of$13 = function $$stmts_of(node) {
-          var self = this;
-
+        $def(self, '$stmts_of', function $$stmts_of(node) {
+          
           if ($truthy(node['$nil?']())) {
             return []
           } else if ($truthy(["begin", "kwbegin"]['$include?'](node.$type()))) {
@@ -29081,59 +25890,78 @@ Opal.modules["opal/rewriters/base"] = function(Opal) {
           } else {
             return [node]
           }
-        }, $Base_stmts_of$13.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$begin_with_stmts', $Base_begin_with_stmts$14 = function $$begin_with_stmts(stmts) {
-          var self = this, $case = nil;
+        $def(self, '$begin_with_stmts', function $$begin_with_stmts(stmts) {
+          var self = this, $ret_or_1 = nil;
 
-          return (function() {$case = stmts.$length();
-          if ((0)['$===']($case)) {return nil}
-          else if ((1)['$===']($case)) {return stmts['$[]'](0)}
-          else {return $send(self, 's', ["begin"].concat(Opal.to_a(stmts)))}})()
-        }, $Base_begin_with_stmts$14.$$arity = 1);
+          if ($eqeqeq(0, ($ret_or_1 = stmts.$length()))) {
+            return nil
+          } else if ($eqeqeq(1, $ret_or_1)) {
+            return stmts['$[]'](0)
+          } else {
+            return $send(self, 's', ["begin"].concat($to_a(stmts)))
+          }
+        }, 1);
         self.$attr_accessor("current_node");
         
-        Opal.def(self, '$process', $Base_process$15 = function $$process(node) {
-          var $iter = $Base_process$15.$$p, $yield = $iter || nil, self = this, $writer = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        $def(self, '$process', function $$process(node) {
+          var $yield = $$process.$$p || nil, self = this, $writer = nil;
 
-          if ($iter) $Base_process$15.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$process.$$p;
           return (function() { try {
           
           
           $writer = [node];
-          $send(self, 'current_node=', Opal.to_a($writer));
+          $send(self, 'current_node=', $to_a($writer));
           $writer[$rb_minus($writer["length"], 1)];;
-          return $send2(self, $find_super(self, 'process', $Base_process$15, false, true), 'process', $zuper, $iter);
+          return $send2(self, $find_super(self, 'process', $$process, false, true), 'process', [node], $yield);
           } finally {
-            (($writer = [nil]), $send(self, 'current_node=', Opal.to_a($writer)), $writer[$rb_minus($writer["length"], 1)])
+            (($writer = [nil]), $send(self, 'current_node=', $to_a($writer)), $writer[$rb_minus($writer["length"], 1)])
           }; })()
-        }, $Base_process$15.$$arity = 1);
-        return (Opal.def(self, '$error', $Base_error$16 = function $$error(msg) {
+        }, 1);
+        
+        $def(self, '$error', function $$error(msg) {
           var self = this, error = nil, $writer = nil;
 
           
-          error = $$$($$$('::', 'Opal'), 'RewritingError').$new(msg);
+          error = $$$($Opal, 'RewritingError').$new(msg);
           if ($truthy(self.$current_node())) {
             
             $writer = [self.$current_node().$loc()];
-            $send(error, 'location=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];};
+            $send(error, 'location=', $to_a($writer));
+            $writer[$rb_minus($writer["length"], 1)];
+          };
           return self.$raise(error);
-        }, $Base_error$16.$$arity = 1), nil) && 'error';
-      })($nesting[0], $$$($$$($$$('::', 'Parser'), 'AST'), 'Processor'), $nesting)
+        }, 1);
+        
+        $def(self, '$on_top', function $$on_top(node) {
+          var self = this, $writer = nil;
+
+          
+          node = self.$process_regular_node(node);
+          if ($truthy(self.dynamic_cache_result)) {
+            
+            $writer = ["dynamic_cache_result", true];
+            $send(node.$meta(), '[]=', $to_a($writer));
+            $writer[$rb_minus($writer["length"], 1)];
+          };
+          return node;
+        }, 1);
+        return $def(self, '$dynamic!', function $Base_dynamic$excl$2() {
+          var self = this;
+
+          return (self.dynamic_cache_result = true)
+        }, 0);
+      })($nesting[0], $$$($$$($$$('Parser'), 'AST'), 'Processor'), $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/rewriters/opal_engine_check"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["opal/rewriters/opal_engine_check"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $to_a = Opal.to_a, $truthy = Opal.truthy, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def, $const_set = Opal.const_set;
 
-  Opal.add_stubs(['$require', '$children', '$skip_check_present?', '$process', '$s', '$skip_check_present_not?', '$==']);
+  Opal.add_stubs('require,children,skip_check_present?,process,s,skip_check_present_not?,==');
   
   self.$require("opal/rewriters/base");
   return (function($base, $parent_nesting) {
@@ -29144,78 +25972,62 @@ Opal.modules["opal/rewriters/opal_engine_check"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Rewriters');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'OpalEngineCheck');
 
-        var $nesting = [self].concat($parent_nesting), $OpalEngineCheck_on_if$1, $OpalEngineCheck_skip_check_present$ques$2, $OpalEngineCheck_skip_check_present_not$ques$3;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
         
         
-        Opal.def(self, '$on_if', $OpalEngineCheck_on_if$1 = function $$on_if(node) {
-          var $a, $iter = $OpalEngineCheck_on_if$1.$$p, $yield = $iter || nil, self = this, test = nil, true_body = nil, false_body = nil, $ret_or_1 = nil, $ret_or_2 = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        $def(self, '$on_if', function $$on_if(node) {
+          var $a, $yield = $$on_if.$$p || nil, self = this, test = nil, true_body = nil, false_body = nil, $ret_or_1 = nil;
 
-          if ($iter) $OpalEngineCheck_on_if$1.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$on_if.$$p;
           
-          $a = [].concat(Opal.to_a(node.$children())), (test = ($a[0] == null ? nil : $a[0])), (true_body = ($a[1] == null ? nil : $a[1])), (false_body = ($a[2] == null ? nil : $a[2])), $a;
+          $a = [].concat($to_a(node.$children())), (test = ($a[0] == null ? nil : $a[0])), (true_body = ($a[1] == null ? nil : $a[1])), (false_body = ($a[2] == null ? nil : $a[2])), $a;
           if ($truthy(self['$skip_check_present?'](test))) {
-            return self.$process((function() {if ($truthy(($ret_or_1 = true_body))) {
-              return $ret_or_1
-            } else {
-              return self.$s("nil")
-            }; return nil; })())
+            return self.$process(($truthy(($ret_or_1 = true_body)) ? ($ret_or_1) : (self.$s("nil"))))
           } else if ($truthy(self['$skip_check_present_not?'](test))) {
-            return self.$process((function() {if ($truthy(($ret_or_2 = false_body))) {
-              return $ret_or_2
-            } else {
-              return self.$s("nil")
-            }; return nil; })())
+            return self.$process(($truthy(($ret_or_1 = false_body)) ? ($ret_or_1) : (self.$s("nil"))))
           } else {
-            return $send2(self, $find_super(self, 'on_if', $OpalEngineCheck_on_if$1, false, true), 'on_if', $zuper, $iter)
+            return $send2(self, $find_super(self, 'on_if', $$on_if, false, true), 'on_if', [node], $yield)
           };
-        }, $OpalEngineCheck_on_if$1.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$skip_check_present?', $OpalEngineCheck_skip_check_present$ques$2 = function(test) {
-          var self = this, $ret_or_3 = nil;
+        $def(self, '$skip_check_present?', function $OpalEngineCheck_skip_check_present$ques$1(test) {
+          var $ret_or_1 = nil;
 
-          if ($truthy(($ret_or_3 = test['$==']($$($nesting, 'RUBY_ENGINE_CHECK'))))) {
-            return $ret_or_3
+          if ($truthy(($ret_or_1 = test['$==']($$('RUBY_ENGINE_CHECK'))))) {
+            return $ret_or_1
           } else {
-            return test['$==']($$($nesting, 'RUBY_PLATFORM_CHECK'))
+            return test['$==']($$('RUBY_PLATFORM_CHECK'))
           }
-        }, $OpalEngineCheck_skip_check_present$ques$2.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$skip_check_present_not?', $OpalEngineCheck_skip_check_present_not$ques$3 = function(test) {
-          var self = this, $ret_or_4 = nil;
+        $def(self, '$skip_check_present_not?', function $OpalEngineCheck_skip_check_present_not$ques$2(test) {
+          var $ret_or_1 = nil;
 
-          if ($truthy(($ret_or_4 = test['$==']($$($nesting, 'RUBY_ENGINE_CHECK_NOT'))))) {
-            return $ret_or_4
+          if ($truthy(($ret_or_1 = test['$==']($$('RUBY_ENGINE_CHECK_NOT'))))) {
+            return $ret_or_1
           } else {
-            return test['$==']($$($nesting, 'RUBY_PLATFORM_CHECK_NOT'))
+            return test['$==']($$('RUBY_PLATFORM_CHECK_NOT'))
           }
-        }, $OpalEngineCheck_skip_check_present_not$ques$3.$$arity = 1);
-        Opal.const_set($nesting[0], 'RUBY_ENGINE_CHECK', self.$s("send", self.$s("const", nil, "RUBY_ENGINE"), "==", self.$s("str", "opal")));
-        Opal.const_set($nesting[0], 'RUBY_ENGINE_CHECK_NOT', self.$s("send", self.$s("const", nil, "RUBY_ENGINE"), "!=", self.$s("str", "opal")));
-        Opal.const_set($nesting[0], 'RUBY_PLATFORM_CHECK', self.$s("send", self.$s("const", nil, "RUBY_PLATFORM"), "==", self.$s("str", "opal")));
-        return Opal.const_set($nesting[0], 'RUBY_PLATFORM_CHECK_NOT', self.$s("send", self.$s("const", nil, "RUBY_PLATFORM"), "!=", self.$s("str", "opal")));
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+        }, 1);
+        $const_set($nesting[0], 'RUBY_ENGINE_CHECK', self.$s("send", self.$s("const", nil, "RUBY_ENGINE"), "==", self.$s("str", "opal")));
+        $const_set($nesting[0], 'RUBY_ENGINE_CHECK_NOT', self.$s("send", self.$s("const", nil, "RUBY_ENGINE"), "!=", self.$s("str", "opal")));
+        $const_set($nesting[0], 'RUBY_PLATFORM_CHECK', self.$s("send", self.$s("const", nil, "RUBY_PLATFORM"), "==", self.$s("str", "opal")));
+        return $const_set($nesting[0], 'RUBY_PLATFORM_CHECK_NOT', self.$s("send", self.$s("const", nil, "RUBY_PLATFORM"), "!=", self.$s("str", "opal")));
+      })($nesting[0], $$('Base'), $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/rewriters/for_rewriter"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["opal/rewriters/for_rewriter"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $defs = Opal.defs, $truthy = Opal.truthy, $rb_plus = Opal.rb_plus, $to_a = Opal.to_a, $send = Opal.send, $eqeqeq = Opal.eqeqeq, $def = Opal.def, $send2 = Opal.send2, $find_super = Opal.find_super;
 
-  Opal.add_stubs(['$require', '$+', '$find', '$map', '$s', '$next_tmp', '$class', '$type', '$===', '$<<', '$prepend_to_body', '$process', '$attr_reader', '$new', '$to_a', '$result']);
+  Opal.add_stubs('require,+,find,map,s,next_tmp,class,===,type,updated,<<,prepend_to_body,process,attr_reader,new,to_a,result');
   
   self.$require("opal/rewriters/base");
   return (function($base, $parent_nesting) {
@@ -29226,102 +26038,89 @@ Opal.modules["opal/rewriters/for_rewriter"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Rewriters');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'ForRewriter');
 
-        var $nesting = [self].concat($parent_nesting), $ForRewriter_reset_tmp_counter$excl$1, $ForRewriter_next_tmp$2, $ForRewriter_on_for$3;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
         
-        Opal.defs(self, '$reset_tmp_counter!', $ForRewriter_reset_tmp_counter$excl$1 = function() {
+        $defs(self, '$reset_tmp_counter!', function $ForRewriter_reset_tmp_counter$excl$1() {
           var self = this;
 
           return (self.counter = 0)
-        }, $ForRewriter_reset_tmp_counter$excl$1.$$arity = 0);
-        Opal.defs(self, '$next_tmp', $ForRewriter_next_tmp$2 = function $$next_tmp() {
+        }, 0);
+        $defs(self, '$next_tmp', function $$next_tmp() {
           var self = this, $ret_or_1 = nil;
           if (self.counter == null) self.counter = nil;
 
           
-          self.counter = (function() {if ($truthy(($ret_or_1 = self.counter))) {
-            return $ret_or_1
-          } else {
-            return 0
-          }; return nil; })();
+          self.counter = ($truthy(($ret_or_1 = self.counter)) ? ($ret_or_1) : (0));
           self.counter = $rb_plus(self.counter, 1);
-          return "" + "$for_tmp" + (self.counter);
-        }, $ForRewriter_next_tmp$2.$$arity = 0);
+          return "$for_tmp" + (self.counter);
+        }, 0);
         
-        Opal.def(self, '$on_for', $ForRewriter_on_for$3 = function $$on_for(node) {
-          var $a, $$4, self = this, loop_variable = nil, iterating_value = nil, loop_body = nil, iterating_lvars = nil, lvars_declared_in_body = nil, outer_assigns = nil, tmp_loop_variable = nil, get_tmp_loop_variable = nil, loop_variable_assignment = nil, $case = nil;
+        $def(self, '$on_for', function $$on_for(node) {
+          var $a, self = this, loop_variable = nil, iterating_value = nil, loop_body = nil, iterating_lvars = nil, lvars_declared_in_body = nil, outer_assigns = nil, tmp_loop_variable = nil, get_tmp_loop_variable = nil, loop_variable_assignment = nil, $ret_or_1 = nil;
 
           
-          $a = [].concat(Opal.to_a(node)), (loop_variable = ($a[0] == null ? nil : $a[0])), (iterating_value = ($a[1] == null ? nil : $a[1])), (loop_body = ($a[2] == null ? nil : $a[2])), $a;
-          iterating_lvars = $$($nesting, 'LocalVariableAssigns').$find(loop_variable);
-          lvars_declared_in_body = $$($nesting, 'LocalVariableAssigns').$find(loop_body);
-          outer_assigns = $send($rb_plus(iterating_lvars, lvars_declared_in_body), 'map', [], ($$4 = function(lvar_name){var self = $$4.$$s == null ? this : $$4.$$s;
+          $a = [].concat($to_a(node)), (loop_variable = ($a[0] == null ? nil : $a[0])), (iterating_value = ($a[1] == null ? nil : $a[1])), (loop_body = ($a[2] == null ? nil : $a[2])), $a;
+          iterating_lvars = $$('LocalVariableAssigns').$find(loop_variable);
+          lvars_declared_in_body = $$('LocalVariableAssigns').$find(loop_body);
+          outer_assigns = $send($rb_plus(iterating_lvars, lvars_declared_in_body), 'map', [], function $$2(lvar_name){var self = $$2.$$s == null ? this : $$2.$$s;
 
             
             
-            if (lvar_name == null) {
-              lvar_name = nil;
-            };
-            return self.$s("lvdeclare", lvar_name);}, $$4.$$s = self, $$4.$$arity = 1, $$4));
+            if (lvar_name == null) lvar_name = nil;;
+            return self.$s("lvdeclare", lvar_name);}, {$$arity: 1, $$s: self});
           tmp_loop_variable = self.$class().$next_tmp();
           get_tmp_loop_variable = self.$s("js_tmp", tmp_loop_variable);
-          loop_variable_assignment = (function() {$case = loop_variable.$type();
-          if ("mlhs"['$===']($case)) {return self.$s("masgn", loop_variable, get_tmp_loop_variable)}
-          else {return loop_variable['$<<'](get_tmp_loop_variable)}})();
+          loop_variable_assignment = ($eqeqeq("mlhs", ($ret_or_1 = loop_variable.$type())) ? (loop_variable.$updated("masgn", [loop_variable, get_tmp_loop_variable])) : (loop_variable['$<<'](get_tmp_loop_variable)));
           loop_body = self.$prepend_to_body(loop_body, loop_variable_assignment);
-          node = self.$s("send", iterating_value, "each", self.$s("iter", self.$s("args", self.$s("arg", tmp_loop_variable)), self.$process(loop_body)));
-          return $send(self, 's', ["begin"].concat(Opal.to_a(outer_assigns)).concat([node]));
-        }, $ForRewriter_on_for$3.$$arity = 1);
+          node = node.$updated("send", [iterating_value, "each", node.$updated("iter", [self.$s("args", self.$s("arg", tmp_loop_variable)), self.$process(loop_body)])]);
+          return node.$updated("begin", [].concat($to_a(outer_assigns)).concat([node]));
+        }, 1);
         return (function($base, $super, $parent_nesting) {
           var self = $klass($base, $super, 'LocalVariableAssigns');
 
-          var $nesting = [self].concat($parent_nesting), $LocalVariableAssigns_find$5, $LocalVariableAssigns_initialize$6, $LocalVariableAssigns_on_lvasgn$7;
+          var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
           
           self.$attr_reader("result");
-          Opal.defs(self, '$find', $LocalVariableAssigns_find$5 = function $$find(node) {
+          $defs(self, '$find', function $$find(node) {
             var self = this, processor = nil;
 
             
             processor = self.$new();
             processor.$process(node);
             return processor.$result().$to_a();
-          }, $LocalVariableAssigns_find$5.$$arity = 1);
+          }, 1);
           
-          Opal.def(self, '$initialize', $LocalVariableAssigns_initialize$6 = function $$initialize() {
+          $def(self, '$initialize', function $$initialize() {
             var self = this;
 
-            return (self.result = $$($nesting, 'Set').$new())
-          }, $LocalVariableAssigns_initialize$6.$$arity = 0);
-          return (Opal.def(self, '$on_lvasgn', $LocalVariableAssigns_on_lvasgn$7 = function $$on_lvasgn(node) {
-            var $a, $iter = $LocalVariableAssigns_on_lvasgn$7.$$p, $yield = $iter || nil, self = this, name = nil, _ = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+            return (self.result = $$('Set').$new())
+          }, 0);
+          return $def(self, '$on_lvasgn', function $$on_lvasgn(node) {
+            var $a, $yield = $$on_lvasgn.$$p || nil, self = this, name = nil, _ = nil;
 
-            if ($iter) $LocalVariableAssigns_on_lvasgn$7.$$p = null;
-            // Prepare super implicit arguments
-            for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-              $zuper[$zuper_i] = arguments[$zuper_i];
-            }
+            delete $$on_lvasgn.$$p;
             
-            $a = [].concat(Opal.to_a(node)), (name = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $a;
+            $a = [].concat($to_a(node)), (name = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $a;
             self.$result()['$<<'](name);
-            return $send2(self, $find_super(self, 'on_lvasgn', $LocalVariableAssigns_on_lvasgn$7, false, true), 'on_lvasgn', $zuper, $iter);
-          }, $LocalVariableAssigns_on_lvasgn$7.$$arity = 1), nil) && 'on_lvasgn';
-        })($nesting[0], $$($nesting, 'Base'), $nesting);
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+            return $send2(self, $find_super(self, 'on_lvasgn', $$on_lvasgn, false, true), 'on_lvasgn', [node], $yield);
+          }, 1);
+        })($nesting[0], $$('Base'), $nesting);
+      })($nesting[0], $$('Base'), $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/rewriters/explicit_writer_return"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send2 = Opal.send2, $find_super = Opal.find_super, $slice = Opal.slice, $send = Opal.send;
+Opal.modules["opal/rewriters/explicit_writer_return"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $def = Opal.def, $const_set = Opal.const_set, $truthy = Opal.truthy, $send2 = Opal.send2, $find_super = Opal.find_super, $to_a = Opal.to_a, $slice = Opal.slice, $eqeq = Opal.eqeq, $regexp = Opal.regexp, $send = Opal.send;
 
-  Opal.add_stubs(['$require', '$s', '$=~', '$to_s', '$==', '$process_all', '$updated']);
+  Opal.add_stubs('require,s,==,to_s,=~,process_all,updated');
   
   self.$require("opal/rewriters/base");
   return (function($base, $parent_nesting) {
@@ -29332,73 +26131,61 @@ Opal.modules["opal/rewriters/explicit_writer_return"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Rewriters');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'ExplicitWriterReturn');
 
-        var $nesting = [self].concat($parent_nesting), $ExplicitWriterReturn_initialize$1, $ExplicitWriterReturn_on_send$2, $ExplicitWriterReturn_on_masgn$3;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.in_masgn = nil;
+        $proto.in_masgn = nil;
         
         
-        Opal.def(self, '$initialize', $ExplicitWriterReturn_initialize$1 = function $$initialize() {
+        $def(self, '$initialize', function $$initialize() {
           var self = this;
 
           return (self.in_masgn = false)
-        }, $ExplicitWriterReturn_initialize$1.$$arity = 0);
-        Opal.const_set($nesting[0], 'TMP_NAME', "$writer");
-        Opal.const_set($nesting[0], 'GET_ARGS_NODE', self.$s("lvar", $$($nesting, 'TMP_NAME')));
-        Opal.const_set($nesting[0], 'RETURN_ARGS_NODE', self.$s("jsattr", $$($nesting, 'GET_ARGS_NODE'), self.$s("send", self.$s("jsattr", $$($nesting, 'GET_ARGS_NODE'), self.$s("str", "length")), "-", self.$s("int", 1))));
-        
-        Opal.def(self, '$on_send', $ExplicitWriterReturn_on_send$2 = function $$on_send(node) {
-          var $a, $iter = $ExplicitWriterReturn_on_send$2.$$p, $yield = $iter || nil, self = this, recv = nil, method_name = nil, args = nil, $ret_or_1 = nil, set_args_node = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
-
-          if ($iter) $ExplicitWriterReturn_on_send$2.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+        }, 0);
+        $const_set($nesting[0], 'TMP_NAME', "$writer");
+        $const_set($nesting[0], 'GET_ARGS_NODE', self.$s("lvar", $$('TMP_NAME')));
+        $const_set($nesting[0], 'RETURN_ARGS_NODE', self.$s("jsattr", $$('GET_ARGS_NODE'), self.$s("send", self.$s("jsattr", $$('GET_ARGS_NODE'), self.$s("str", "length")), "-", self.$s("int", 1))));
+        
+        $def(self, '$on_send', function $$on_send(node) {
+          var $a, $yield = $$on_send.$$p || nil, self = this, recv = nil, method_name = nil, args = nil, set_args_node = nil;
+
+          delete $$on_send.$$p;
           
           if ($truthy(self.in_masgn)) {
-            return $send2(self, $find_super(self, 'on_send', $ExplicitWriterReturn_on_send$2, false, true), 'on_send', $zuper, $iter)};
-          $a = [].concat(Opal.to_a(node)), (recv = ($a[0] == null ? nil : $a[0])), (method_name = ($a[1] == null ? nil : $a[1])), (args = $slice.call($a, 2)), $a;
-          if ($truthy((function() {if ($truthy(($ret_or_1 = method_name.$to_s()['$=~'](Opal.regexp([$$($nesting, 'REGEXP_START'), "\\w+=", $$($nesting, 'REGEXP_END')]))))) {
-            return $ret_or_1
-          } else {
-            return method_name.$to_s()['$==']("[]=")
-          }; return nil; })())) {
+            return $send2(self, $find_super(self, 'on_send', $$on_send, false, true), 'on_send', [node], $yield)
+          };
+          $a = [].concat($to_a(node)), (recv = ($a[0] == null ? nil : $a[0])), (method_name = ($a[1] == null ? nil : $a[1])), (args = $slice.call($a, 2)), $a;
+          if (($truthy(method_name.$to_s()['$=~']($regexp([$$('REGEXP_START'), "\\w+=", $$('REGEXP_END')]))) || ($eqeq(method_name.$to_s(), "[]=")))) {
             
-            set_args_node = self.$s("lvasgn", $$($nesting, 'TMP_NAME'), $send(self, 's', ["array"].concat(Opal.to_a(self.$process_all(args)))));
-            return self.$s("begin", set_args_node, node.$updated(nil, [recv, method_name, self.$s("splat", $$($nesting, 'GET_ARGS_NODE'))]), $$($nesting, 'RETURN_ARGS_NODE'));
+            set_args_node = self.$s("lvasgn", $$('TMP_NAME'), $send(self, 's', ["array"].concat($to_a(self.$process_all(args)))));
+            return self.$s("begin", set_args_node, node.$updated(nil, [recv, method_name, self.$s("splat", $$('GET_ARGS_NODE'))]), $$('RETURN_ARGS_NODE'));
           } else {
-            return $send2(self, $find_super(self, 'on_send', $ExplicitWriterReturn_on_send$2, false, true), 'on_send', $zuper, $iter)
+            return $send2(self, $find_super(self, 'on_send', $$on_send, false, true), 'on_send', [node], $yield)
           };
-        }, $ExplicitWriterReturn_on_send$2.$$arity = 1);
-        return (Opal.def(self, '$on_masgn', $ExplicitWriterReturn_on_masgn$3 = function $$on_masgn(node) {
-          var $iter = $ExplicitWriterReturn_on_masgn$3.$$p, $yield = $iter || nil, self = this, result = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        }, 1);
+        return $def(self, '$on_masgn', function $$on_masgn(node) {
+          var $yield = $$on_masgn.$$p || nil, self = this, result = nil;
 
-          if ($iter) $ExplicitWriterReturn_on_masgn$3.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$on_masgn.$$p;
           
           self.in_masgn = true;
-          result = $send2(self, $find_super(self, 'on_masgn', $ExplicitWriterReturn_on_masgn$3, false, true), 'on_masgn', $zuper, $iter);
+          result = $send2(self, $find_super(self, 'on_masgn', $$on_masgn, false, true), 'on_masgn', [node], $yield);
           self.in_masgn = false;
           return result;
-        }, $ExplicitWriterReturn_on_masgn$3.$$arity = 1), nil) && 'on_masgn';
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+        }, 1);
+      })($nesting[0], $$('Base'), $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/rewriters/js_reserved_words"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $range = Opal.range, $send2 = Opal.send2, $find_super = Opal.find_super, $hash2 = Opal.hash2;
+Opal.modules["opal/rewriters/js_reserved_words"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $const_set = Opal.const_set, $regexp = Opal.regexp, $truthy = Opal.truthy, $defs = Opal.defs, $def = Opal.def, $range = Opal.range, $to_a = Opal.to_a, $send2 = Opal.send2, $find_super = Opal.find_super, $hash2 = Opal.hash2, $alias = Opal.alias;
 
-  Opal.add_stubs(['$require', '$freeze', '$=~', '$!', '$valid_name?', '$class', '$to_sym', '$valid_ivar_name?', '$[]', '$to_s', '$updated', '$fix_var_name', '$fix_ivar_name']);
+  Opal.add_stubs('require,freeze,=~,!,valid_name?,class,to_sym,valid_ivar_name?,[],to_s,updated,fix_var_name,fix_ivar_name');
   
   self.$require("opal/rewriters/base");
   self.$require("opal/regexp_anchors");
@@ -29410,49 +26197,37 @@ Opal.modules["opal/rewriters/js_reserved_words"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Rewriters');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'JsReservedWords');
 
-        var $nesting = [self].concat($parent_nesting), $JsReservedWords_valid_name$ques$1, $JsReservedWords_valid_ivar_name$ques$2, $JsReservedWords_fix_var_name$3, $JsReservedWords_fix_ivar_name$4, $JsReservedWords_on_lvar$5, $JsReservedWords_on_lvasgn$6, $JsReservedWords_on_ivar$7, $JsReservedWords_on_ivasgn$8, $JsReservedWords_on_restarg$9, $JsReservedWords_on_argument$10;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
         
-        Opal.const_set($nesting[0], 'ES51_RESERVED_WORD', Opal.regexp([$$($nesting, 'REGEXP_START'), "(?:do|if|in|for|let|new|try|var|case|else|enum|eval|false|null|this|true|void|with|break|catch|class|const|super|throw|while|yield|delete|export|import|public|return|static|switch|typeof|default|extends|finally|package|private|continue|debugger|function|arguments|interface|protected|implements|instanceof)", $$($nesting, 'REGEXP_END')]).$freeze());
-        Opal.const_set($nesting[0], 'ES3_RESERVED_WORD_EXCLUSIVE', Opal.regexp([$$($nesting, 'REGEXP_START'), "(?:int|byte|char|goto|long|final|float|short|double|native|throws|boolean|abstract|volatile|transient|synchronized)", $$($nesting, 'REGEXP_END')]).$freeze());
-        Opal.const_set($nesting[0], 'PROTO_SPECIAL_PROPS', Opal.regexp([$$($nesting, 'REGEXP_START'), "(?:constructor|displayName|__proto__|__parent__|__noSuchMethod__|__count__)", $$($nesting, 'REGEXP_END')]).$freeze());
-        Opal.const_set($nesting[0], 'PROTO_SPECIAL_METHODS', Opal.regexp([$$($nesting, 'REGEXP_START'), "(?:hasOwnProperty|valueOf)", $$($nesting, 'REGEXP_END')]).$freeze());
-        Opal.const_set($nesting[0], 'IMMUTABLE_PROPS', Opal.regexp([$$($nesting, 'REGEXP_START'), "(?:NaN|Infinity|undefined)", $$($nesting, 'REGEXP_END')]).$freeze());
-        Opal.const_set($nesting[0], 'BASIC_IDENTIFIER_RULES', Opal.regexp([$$($nesting, 'REGEXP_START'), "[$_a-z][$_a-z\\d]*", $$($nesting, 'REGEXP_END')], 'i').$freeze());
-        Opal.const_set($nesting[0], 'RESERVED_FUNCTION_NAMES', Opal.regexp([$$($nesting, 'REGEXP_START'), "(?:Array)", $$($nesting, 'REGEXP_END')]).$freeze());
-        Opal.defs(self, '$valid_name?', $JsReservedWords_valid_name$ques$1 = function(name) {
-          var self = this, $ret_or_1 = nil, $ret_or_2 = nil, $ret_or_3 = nil;
+        $const_set($nesting[0], 'ES51_RESERVED_WORD', $regexp([$$('REGEXP_START'), "(?:do|if|in|for|let|new|try|var|case|else|enum|eval|false|null|this|true|void|with|break|catch|class|const|super|throw|while|yield|delete|export|import|public|return|static|switch|typeof|default|extends|finally|package|private|continue|debugger|function|arguments|interface|protected|implements|instanceof)", $$('REGEXP_END')]).$freeze());
+        $const_set($nesting[0], 'ES3_RESERVED_WORD_EXCLUSIVE', $regexp([$$('REGEXP_START'), "(?:int|byte|char|goto|long|final|float|short|double|native|throws|boolean|abstract|volatile|transient|synchronized)", $$('REGEXP_END')]).$freeze());
+        $const_set($nesting[0], 'PROTO_SPECIAL_PROPS', $regexp([$$('REGEXP_START'), "(?:constructor|displayName|__proto__|__parent__|__noSuchMethod__|__count__)", $$('REGEXP_END')]).$freeze());
+        $const_set($nesting[0], 'PROTO_SPECIAL_METHODS', $regexp([$$('REGEXP_START'), "(?:hasOwnProperty|valueOf)", $$('REGEXP_END')]).$freeze());
+        $const_set($nesting[0], 'IMMUTABLE_PROPS', $regexp([$$('REGEXP_START'), "(?:NaN|Infinity|undefined)", $$('REGEXP_END')]).$freeze());
+        $const_set($nesting[0], 'BASIC_IDENTIFIER_RULES', $regexp([$$('REGEXP_START'), "[$_a-z][$_a-z\\d]*", $$('REGEXP_END')], 'i').$freeze());
+        $const_set($nesting[0], 'RESERVED_FUNCTION_NAMES', $regexp([$$('REGEXP_START'), "(?:Array)", $$('REGEXP_END')]).$freeze());
+        $defs(self, '$valid_name?', function $JsReservedWords_valid_name$ques$1(name) {
+          var $ret_or_1 = nil, $ret_or_2 = nil, $ret_or_3 = nil;
 
-          if ($truthy(($ret_or_1 = $$($nesting, 'BASIC_IDENTIFIER_RULES')['$=~'](name)))) {
-            return (function() {if ($truthy(($ret_or_2 = (function() {if ($truthy(($ret_or_3 = $$($nesting, 'ES51_RESERVED_WORD')['$=~'](name)))) {
-              return $ret_or_3
-            } else {
-              return $$($nesting, 'ES3_RESERVED_WORD_EXCLUSIVE')['$=~'](name)
-            }; return nil; })()))) {
-              return $ret_or_2
-            } else {
-              return $$($nesting, 'IMMUTABLE_PROPS')['$=~'](name)
-            }; return nil; })()['$!']()
+          if ($truthy(($ret_or_1 = $$('BASIC_IDENTIFIER_RULES')['$=~'](name)))) {
+            return ($truthy(($ret_or_2 = ($truthy(($ret_or_3 = $$('ES51_RESERVED_WORD')['$=~'](name))) ? ($ret_or_3) : ($$('ES3_RESERVED_WORD_EXCLUSIVE')['$=~'](name))))) ? ($ret_or_2) : ($$('IMMUTABLE_PROPS')['$=~'](name)))['$!']()
           } else {
             return $ret_or_1
           }
-        }, $JsReservedWords_valid_name$ques$1.$$arity = 1);
-        Opal.defs(self, '$valid_ivar_name?', $JsReservedWords_valid_ivar_name$ques$2 = function(name) {
-          var self = this, $ret_or_4 = nil;
+        }, 1);
+        $defs(self, '$valid_ivar_name?', function $JsReservedWords_valid_ivar_name$ques$2(name) {
+          var $ret_or_1 = nil;
 
-          return (function() {if ($truthy(($ret_or_4 = $$($nesting, 'PROTO_SPECIAL_PROPS')['$=~'](name)))) {
-            return $ret_or_4
-          } else {
-            return $$($nesting, 'PROTO_SPECIAL_METHODS')['$=~'](name)
-          }; return nil; })()['$!']()
-        }, $JsReservedWords_valid_ivar_name$ques$2.$$arity = 1);
+          return ($truthy(($ret_or_1 = $$('PROTO_SPECIAL_PROPS')['$=~'](name))) ? ($ret_or_1) : ($$('PROTO_SPECIAL_METHODS')['$=~'](name)))['$!']()
+        }, 1);
         
-        Opal.def(self, '$fix_var_name', $JsReservedWords_fix_var_name$3 = function $$fix_var_name(name) {
+        $def(self, '$fix_var_name', function $$fix_var_name(name) {
           var self = this;
 
           if ($truthy(self.$class()['$valid_name?'](name))) {
@@ -29460,9 +26235,9 @@ Opal.modules["opal/rewriters/js_reserved_words"] = function(Opal) {
           } else {
             return (("" + (name)) + "$").$to_sym()
           }
-        }, $JsReservedWords_fix_var_name$3.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$fix_ivar_name', $JsReservedWords_fix_ivar_name$4 = function $$fix_ivar_name(name) {
+        $def(self, '$fix_ivar_name', function $$fix_ivar_name(name) {
           var self = this;
 
           if ($truthy(self.$class()['$valid_ivar_name?'](name.$to_s()['$[]']($range(1, -1, false))))) {
@@ -29470,93 +26245,79 @@ Opal.modules["opal/rewriters/js_reserved_words"] = function(Opal) {
           } else {
             return (("" + (name)) + "$").$to_sym()
           }
-        }, $JsReservedWords_fix_ivar_name$4.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$on_lvar', $JsReservedWords_on_lvar$5 = function $$on_lvar(node) {
-          var $a, $iter = $JsReservedWords_on_lvar$5.$$p, $yield = $iter || nil, self = this, name = nil, _ = nil;
+        $def(self, '$on_lvar', function $$on_lvar(node) {
+          var $a, $yield = $$on_lvar.$$p || nil, self = this, name = nil, _ = nil;
 
-          if ($iter) $JsReservedWords_on_lvar$5.$$p = null;
+          delete $$on_lvar.$$p;
           
-          $a = [].concat(Opal.to_a(node)), (name = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $a;
+          $a = [].concat($to_a(node)), (name = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $a;
           node = node.$updated(nil, [self.$fix_var_name(name)]);
-          return $send2(self, $find_super(self, 'on_lvar', $JsReservedWords_on_lvar$5, false, true), 'on_lvar', [node], null);
-        }, $JsReservedWords_on_lvar$5.$$arity = 1);
+          return $send2(self, $find_super(self, 'on_lvar', $$on_lvar, false, true), 'on_lvar', [node], null);
+        }, 1);
         
-        Opal.def(self, '$on_lvasgn', $JsReservedWords_on_lvasgn$6 = function $$on_lvasgn(node) {
-          var $a, $iter = $JsReservedWords_on_lvasgn$6.$$p, $yield = $iter || nil, self = this, name = nil, value = nil;
+        $def(self, '$on_lvasgn', function $$on_lvasgn(node) {
+          var $a, $yield = $$on_lvasgn.$$p || nil, self = this, name = nil, value = nil;
 
-          if ($iter) $JsReservedWords_on_lvasgn$6.$$p = null;
+          delete $$on_lvasgn.$$p;
           
-          $a = [].concat(Opal.to_a(node)), (name = ($a[0] == null ? nil : $a[0])), (value = ($a[1] == null ? nil : $a[1])), $a;
-          node = (function() {if ($truthy(value)) {
-            return node.$updated(nil, [self.$fix_var_name(name), value])
-          } else {
-            return node.$updated(nil, [self.$fix_var_name(name)])
-          }; return nil; })();
-          return $send2(self, $find_super(self, 'on_lvasgn', $JsReservedWords_on_lvasgn$6, false, true), 'on_lvasgn', [node], null);
-        }, $JsReservedWords_on_lvasgn$6.$$arity = 1);
+          $a = [].concat($to_a(node)), (name = ($a[0] == null ? nil : $a[0])), (value = ($a[1] == null ? nil : $a[1])), $a;
+          node = ($truthy(value) ? (node.$updated(nil, [self.$fix_var_name(name), value])) : (node.$updated(nil, [self.$fix_var_name(name)])));
+          return $send2(self, $find_super(self, 'on_lvasgn', $$on_lvasgn, false, true), 'on_lvasgn', [node], null);
+        }, 1);
         
-        Opal.def(self, '$on_ivar', $JsReservedWords_on_ivar$7 = function $$on_ivar(node) {
-          var $a, $iter = $JsReservedWords_on_ivar$7.$$p, $yield = $iter || nil, self = this, name = nil, _ = nil;
+        $def(self, '$on_ivar', function $$on_ivar(node) {
+          var $a, $yield = $$on_ivar.$$p || nil, self = this, name = nil, _ = nil;
 
-          if ($iter) $JsReservedWords_on_ivar$7.$$p = null;
+          delete $$on_ivar.$$p;
           
-          $a = [].concat(Opal.to_a(node)), (name = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $a;
+          $a = [].concat($to_a(node)), (name = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $a;
           node = node.$updated(nil, [self.$fix_ivar_name(name)]);
-          return $send2(self, $find_super(self, 'on_ivar', $JsReservedWords_on_ivar$7, false, true), 'on_ivar', [node], null);
-        }, $JsReservedWords_on_ivar$7.$$arity = 1);
+          return $send2(self, $find_super(self, 'on_ivar', $$on_ivar, false, true), 'on_ivar', [node], null);
+        }, 1);
         
-        Opal.def(self, '$on_ivasgn', $JsReservedWords_on_ivasgn$8 = function $$on_ivasgn(node) {
-          var $a, $iter = $JsReservedWords_on_ivasgn$8.$$p, $yield = $iter || nil, self = this, name = nil, value = nil;
+        $def(self, '$on_ivasgn', function $$on_ivasgn(node) {
+          var $a, $yield = $$on_ivasgn.$$p || nil, self = this, name = nil, value = nil;
 
-          if ($iter) $JsReservedWords_on_ivasgn$8.$$p = null;
+          delete $$on_ivasgn.$$p;
           
-          $a = [].concat(Opal.to_a(node)), (name = ($a[0] == null ? nil : $a[0])), (value = ($a[1] == null ? nil : $a[1])), $a;
-          node = (function() {if ($truthy(value)) {
-            return node.$updated(nil, [self.$fix_ivar_name(name), value])
-          } else {
-            return node.$updated(nil, [self.$fix_ivar_name(name)])
-          }; return nil; })();
-          return $send2(self, $find_super(self, 'on_ivasgn', $JsReservedWords_on_ivasgn$8, false, true), 'on_ivasgn', [node], null);
-        }, $JsReservedWords_on_ivasgn$8.$$arity = 1);
+          $a = [].concat($to_a(node)), (name = ($a[0] == null ? nil : $a[0])), (value = ($a[1] == null ? nil : $a[1])), $a;
+          node = ($truthy(value) ? (node.$updated(nil, [self.$fix_ivar_name(name), value])) : (node.$updated(nil, [self.$fix_ivar_name(name)])));
+          return $send2(self, $find_super(self, 'on_ivasgn', $$on_ivasgn, false, true), 'on_ivasgn', [node], null);
+        }, 1);
         
-        Opal.def(self, '$on_restarg', $JsReservedWords_on_restarg$9 = function $$on_restarg(node) {
+        $def(self, '$on_restarg', function $$on_restarg(node) {
           var $a, self = this, name = nil, _ = nil;
 
           
-          $a = [].concat(Opal.to_a(node)), (name = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $a;
+          $a = [].concat($to_a(node)), (name = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $a;
           if ($truthy(name)) {
-            node = node.$updated(nil, [self.$fix_var_name(name)], $hash2(["meta"], {"meta": $hash2(["arg_name"], {"arg_name": name})}))};
+            node = node.$updated(nil, [self.$fix_var_name(name)], $hash2(["meta"], {"meta": $hash2(["arg_name"], {"arg_name": name})}))
+          };
           return node;
-        }, $JsReservedWords_on_restarg$9.$$arity = 1);
-        return (Opal.def(self, '$on_argument', $JsReservedWords_on_argument$10 = function $$on_argument(node) {
-          var $a, $iter = $JsReservedWords_on_argument$10.$$p, $yield = $iter || nil, self = this, name = nil, value = nil, fixed_name = nil, new_children = nil;
+        }, 1);
+        $alias(self, "on_kwrestarg", "on_restarg");
+        return $def(self, '$on_argument', function $$on_argument(node) {
+          var $a, $yield = $$on_argument.$$p || nil, self = this, name = nil, value = nil, fixed_name = nil, new_children = nil;
 
-          if ($iter) $JsReservedWords_on_argument$10.$$p = null;
+          delete $$on_argument.$$p;
           
-          node = $send2(self, $find_super(self, 'on_argument', $JsReservedWords_on_argument$10, false, true), 'on_argument', [node], null);
-          $a = [].concat(Opal.to_a(node)), (name = ($a[0] == null ? nil : $a[0])), (value = ($a[1] == null ? nil : $a[1])), $a;
+          node = $send2(self, $find_super(self, 'on_argument', $$on_argument, false, true), 'on_argument', [node], null);
+          $a = [].concat($to_a(node)), (name = ($a[0] == null ? nil : $a[0])), (value = ($a[1] == null ? nil : $a[1])), $a;
           fixed_name = self.$fix_var_name(name);
-          new_children = (function() {if ($truthy(value)) {
-            return [fixed_name, value]
-          } else {
-            return [fixed_name]
-          }; return nil; })();
+          new_children = ($truthy(value) ? ([fixed_name, value]) : ([fixed_name]));
           return node.$updated(nil, new_children, $hash2(["meta"], {"meta": $hash2(["arg_name"], {"arg_name": name})}));
-        }, $JsReservedWords_on_argument$10.$$arity = 1), nil) && 'on_argument';
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+        }, 1);
+      })($nesting[0], $$('Base'), $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/rewriters/block_to_iter"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["opal/rewriters/block_to_iter"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $to_a = Opal.to_a, $rb_plus = Opal.rb_plus, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$s', '$updated', '$+', '$children']);
+  Opal.add_stubs('require,s,process,updated,+,children');
   
   self.$require("opal/rewriters/base");
   return (function($base, $parent_nesting) {
@@ -29567,36 +26328,29 @@ Opal.modules["opal/rewriters/block_to_iter"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Rewriters');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'BlockToIter');
 
-        var $nesting = [self].concat($parent_nesting), $BlockToIter_on_block$1;
-
-        return (Opal.def(self, '$on_block', $BlockToIter_on_block$1 = function $$on_block(node) {
-          var $a, $iter = $BlockToIter_on_block$1.$$p, $yield = $iter || nil, self = this, recvr = nil, args = nil, body = nil, iter_node = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        
+        return $def(self, '$on_block', function $$on_block(node) {
+          var $a, self = this, recvr = nil, args = nil, body = nil, iter_node = nil;
 
-          if ($iter) $BlockToIter_on_block$1.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
           
-          $a = [].concat(Opal.to_a($send2(self, $find_super(self, 'on_block', $BlockToIter_on_block$1, false, true), 'on_block', $zuper, $iter))), (recvr = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), $a;
+          $a = [].concat($to_a(node)), (recvr = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), $a;
           iter_node = self.$s("iter", args, body);
-          return recvr.$updated(nil, $rb_plus(recvr.$children(), [iter_node]));
-        }, $BlockToIter_on_block$1.$$arity = 1), nil) && 'on_block'
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+          return self.$process(recvr.$updated(nil, $rb_plus(recvr.$children(), [iter_node])));
+        }, 1)
+      })($nesting[0], $$('Base'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/rewriters/dot_js_syntax"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $slice = Opal.slice, $truthy = Opal.truthy, $send2 = Opal.send2, $find_super = Opal.find_super, $send = Opal.send;
+Opal.modules["opal/rewriters/dot_js_syntax"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $to_a = Opal.to_a, $slice = Opal.slice, $eqeq = Opal.eqeq, $truthy = Opal.truthy, $eqeqeq = Opal.eqeqeq, $neqeq = Opal.neqeq, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def, $send = Opal.send;
 
-  Opal.add_stubs(['$require', '$==', '$type', '$===', '$!=', '$size', '$error', '$first', '$to_js_attr_call', '$to_js_attr_assign_call', '$to_native_js_call', '$s']);
+  Opal.add_stubs('require,==,type,===,!=,size,error,first,to_js_attr_call,to_js_attr_assign_call,to_native_js_call,s');
   
   self.$require("opal/rewriters/base");
   return (function($base, $parent_nesting) {
@@ -29607,84 +26361,76 @@ Opal.modules["opal/rewriters/dot_js_syntax"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Rewriters');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'DotJsSyntax');
 
-        var $nesting = [self].concat($parent_nesting), $DotJsSyntax_on_send$1, $DotJsSyntax_to_native_js_call$2, $DotJsSyntax_to_js_attr_call$3, $DotJsSyntax_to_js_attr_assign_call$4;
-
         
         
-        Opal.def(self, '$on_send', $DotJsSyntax_on_send$1 = function $$on_send(node) {
-          var $a, $iter = $DotJsSyntax_on_send$1.$$p, $yield = $iter || nil, self = this, recv = nil, meth = nil, args = nil, $ret_or_1 = nil, recv_of_recv = nil, meth_of_recv = nil, _ = nil, $case = nil, property = nil, value = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        
+        $def(self, '$on_send', function $$on_send(node) {
+          var $a, $yield = $$on_send.$$p || nil, self = this, recv = nil, meth = nil, args = nil, recv_of_recv = nil, meth_of_recv = nil, _ = nil, $ret_or_1 = nil, property = nil, value = nil;
 
-          if ($iter) $DotJsSyntax_on_send$1.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$on_send.$$p;
           
-          $a = [].concat(Opal.to_a(node)), (recv = ($a[0] == null ? nil : $a[0])), (meth = ($a[1] == null ? nil : $a[1])), (args = $slice.call($a, 2)), $a;
-          if ($truthy((function() {if ($truthy(($ret_or_1 = recv))) {
-            return recv.$type()['$==']("send")
-          } else {
-            return $ret_or_1
-          }; return nil; })())) {
-            
-            $a = [].concat(Opal.to_a(recv)), (recv_of_recv = ($a[0] == null ? nil : $a[0])), (meth_of_recv = ($a[1] == null ? nil : $a[1])), (_ = ($a[2] == null ? nil : $a[2])), $a;
-            if (meth_of_recv['$==']("JS")) {
-              
-              $case = meth;
-              if ("[]"['$===']($case)) {
-              if ($truthy(args.$size()['$!='](1))) {
-                self.$error(".JS[:property] syntax supports only one argument")};
-              property = args.$first();
-              node = self.$to_js_attr_call(recv_of_recv, property);}
-              else if ("[]="['$===']($case)) {
-              if ($truthy(args.$size()['$!='](2))) {
-                self.$error(".JS[:property]= syntax supports only two arguments")};
-              $a = [].concat(Opal.to_a(args)), (property = ($a[0] == null ? nil : $a[0])), (value = ($a[1] == null ? nil : $a[1])), $a;
-              node = self.$to_js_attr_assign_call(recv_of_recv, property, value);}
-              else {node = self.$to_native_js_call(recv_of_recv, meth, args)};
-              return $send2(self, $find_super(self, 'on_send', $DotJsSyntax_on_send$1, false, true), 'on_send', [node], null);
+          $a = [].concat($to_a(node)), (recv = ($a[0] == null ? nil : $a[0])), (meth = ($a[1] == null ? nil : $a[1])), (args = $slice.call($a, 2)), $a;
+          if (($truthy(recv) && ($eqeq(recv.$type(), "send")))) {
+            
+            $a = [].concat($to_a(recv)), (recv_of_recv = ($a[0] == null ? nil : $a[0])), (meth_of_recv = ($a[1] == null ? nil : $a[1])), (_ = ($a[2] == null ? nil : $a[2])), $a;
+            if ($eqeq(meth_of_recv, "JS")) {
+              
+              if ($eqeqeq("[]", ($ret_or_1 = meth))) {
+                
+                if ($neqeq(args.$size(), 1)) {
+                  self.$error(".JS[:property] syntax supports only one argument")
+                };
+                property = args.$first();
+                node = self.$to_js_attr_call(recv_of_recv, property);
+              } else if ($eqeqeq("[]=", $ret_or_1)) {
+                
+                if ($neqeq(args.$size(), 2)) {
+                  self.$error(".JS[:property]= syntax supports only two arguments")
+                };
+                $a = [].concat($to_a(args)), (property = ($a[0] == null ? nil : $a[0])), (value = ($a[1] == null ? nil : $a[1])), $a;
+                node = self.$to_js_attr_assign_call(recv_of_recv, property, value);
+              } else {
+                node = self.$to_native_js_call(recv_of_recv, meth, args)
+              };
+              return $send2(self, $find_super(self, 'on_send', $$on_send, false, true), 'on_send', [node], null);
             } else {
-              return $send2(self, $find_super(self, 'on_send', $DotJsSyntax_on_send$1, false, true), 'on_send', $zuper, $iter)
+              return $send2(self, $find_super(self, 'on_send', $$on_send, false, true), 'on_send', [node], $yield)
             };
           } else {
-            return $send2(self, $find_super(self, 'on_send', $DotJsSyntax_on_send$1, false, true), 'on_send', $zuper, $iter)
+            return $send2(self, $find_super(self, 'on_send', $$on_send, false, true), 'on_send', [node], $yield)
           };
-        }, $DotJsSyntax_on_send$1.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$to_native_js_call', $DotJsSyntax_to_native_js_call$2 = function $$to_native_js_call(recv, meth, args) {
+        $def(self, '$to_native_js_call', function $$to_native_js_call(recv, meth, args) {
           var self = this;
 
-          return $send(self, 's', ["jscall", recv, meth].concat(Opal.to_a(args)))
-        }, $DotJsSyntax_to_native_js_call$2.$$arity = 3);
+          return $send(self, 's', ["jscall", recv, meth].concat($to_a(args)))
+        }, 3);
         
-        Opal.def(self, '$to_js_attr_call', $DotJsSyntax_to_js_attr_call$3 = function $$to_js_attr_call(recv, property) {
+        $def(self, '$to_js_attr_call', function $$to_js_attr_call(recv, property) {
           var self = this;
 
           return self.$s("jsattr", recv, property)
-        }, $DotJsSyntax_to_js_attr_call$3.$$arity = 2);
-        return (Opal.def(self, '$to_js_attr_assign_call', $DotJsSyntax_to_js_attr_assign_call$4 = function $$to_js_attr_assign_call(recv, property, value) {
+        }, 2);
+        return $def(self, '$to_js_attr_assign_call', function $$to_js_attr_assign_call(recv, property, value) {
           var self = this;
 
           return self.$s("jsattrasgn", recv, property, value)
-        }, $DotJsSyntax_to_js_attr_assign_call$4.$$arity = 3), nil) && 'to_js_attr_assign_call';
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+        }, 3);
+      })($nesting[0], $$('Base'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/rewriters/pattern_matching"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $slice = Opal.slice, $truthy = Opal.truthy, $send = Opal.send, $alias = Opal.alias;
+Opal.modules["opal/rewriters/pattern_matching"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def, $to_a = Opal.to_a, $rb_plus = Opal.rb_plus, $slice = Opal.slice, $truthy = Opal.truthy, $send = Opal.send, $eqeqeq = Opal.eqeqeq, $not = Opal.not, $neqeq = Opal.neqeq, $eqeq = Opal.eqeq, $alias = Opal.alias, $Opal = Opal.Opal;
 
-  Opal.add_stubs(['$require', '$s', '$convert_full_pattern', '$raise_no_matching_pattern_error', '$+', '$process', '$single_case_match', '$private', '$shift', '$type', '$===', '$!', '$empty?', '$!=', '$==', '$class', '$new', '$run!', '$variables', '$pattern', '$map', '$<<', '$array', '$on_literal', '$first', '$children', '$to_proc', '$method', '$each', '$to_ast', '$on_array_pattern', '$compact', '$[]']);
+  Opal.add_stubs('require,s,convert_full_pattern,raise_no_matching_pattern_error,+,process,single_case_match,private,shift,===,type,!,empty?,!=,==,class,new,run!,variables,pattern,map,<<,array,on_literal,first,children,to_proc,method,each,to_ast,on_array_pattern,compact,[]');
   
   self.$require("opal/rewriters/base");
   return (function($base, $parent_nesting) {
@@ -29695,173 +26441,164 @@ Opal.modules["opal/rewriters/pattern_matching"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Rewriters');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'PatternMatching');
 
-        var $nesting = [self].concat($parent_nesting), $PatternMatching_initialize$1, $PatternMatching_on_match_pattern$2, $PatternMatching_on_match_pattern_p$3, $PatternMatching_on_case_match$4, $PatternMatching_raise_no_matching_pattern_error$5, $PatternMatching_single_case_match$6, $PatternMatching_convert_full_pattern$7;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.depth = nil;
+        $proto.depth = nil;
         
         
-        Opal.def(self, '$initialize', $PatternMatching_initialize$1 = function $$initialize() {
-          var $iter = $PatternMatching_initialize$1.$$p, $yield = $iter || nil, self = this, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        $def(self, '$initialize', function $$initialize() {
+          var $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $PatternMatching_initialize$1.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$initialize.$$p;
           
           self.depth = 0;
-          return $send2(self, $find_super(self, 'initialize', $PatternMatching_initialize$1, false, true), 'initialize', $zuper, $iter);
-        }, $PatternMatching_initialize$1.$$arity = 0);
+          return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [], $yield);
+        }, 0);
         
-        Opal.def(self, '$on_match_pattern', $PatternMatching_on_match_pattern$2 = function $$on_match_pattern(node) {
+        $def(self, '$on_match_pattern', function $$on_match_pattern(node) {
           var $a, self = this, from = nil, pat = nil;
 
           
-          $a = [].concat(Opal.to_a(node)), (from = ($a[0] == null ? nil : $a[0])), (pat = ($a[1] == null ? nil : $a[1])), $a;
+          $a = [].concat($to_a(node)), (from = ($a[0] == null ? nil : $a[0])), (pat = ($a[1] == null ? nil : $a[1])), $a;
           return self.$s("begin", self.$s("lvasgn", "$pmvar", from), self.$s("if", self.$convert_full_pattern(from, pat), nil, self.$raise_no_matching_pattern_error("$pmvar")));
-        }, $PatternMatching_on_match_pattern$2.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$on_match_pattern_p', $PatternMatching_on_match_pattern_p$3 = function $$on_match_pattern_p(node) {
+        $def(self, '$on_match_pattern_p', function $$on_match_pattern_p(node) {
           var $a, self = this, from = nil, pat = nil;
 
           
-          $a = [].concat(Opal.to_a(node)), (from = ($a[0] == null ? nil : $a[0])), (pat = ($a[1] == null ? nil : $a[1])), $a;
+          $a = [].concat($to_a(node)), (from = ($a[0] == null ? nil : $a[0])), (pat = ($a[1] == null ? nil : $a[1])), $a;
           return self.$s("if", self.$convert_full_pattern(from, pat), self.$s("true"), self.$s("false"));
-        }, $PatternMatching_on_match_pattern_p$3.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$on_case_match', $PatternMatching_on_case_match$4 = function $$on_case_match(node) {
+        $def(self, '$on_case_match', function $$on_case_match(node) {
           var $a, $b, self = this, cmvar = nil, from = nil, cases = nil, els = nil;
 
           
           self.depth = $rb_plus(self.depth, 1);
-          cmvar = "" + "$cmvar" + (self.depth);
-          $a = [].concat(Opal.to_a(node)), (from = ($a[0] == null ? nil : $a[0])), $b = $a.length - 1, $b = ($b < 1) ? 1 : $b, (cases = $slice.call($a, 1, $b)), (els = ($a[$b] == null ? nil : $a[$b])), $a;
+          cmvar = "$cmvar" + (self.depth);
+          $a = [].concat($to_a(node)), (from = ($a[0] == null ? nil : $a[0])), $b = $a.length - 1, $b = ($b < 1) ? 1 : $b, (cases = $slice.call($a, 1, $b)), (els = ($a[$b] == null ? nil : $a[$b])), $a;
           if ($truthy(els)) {
             self.$process(els)
           } else {
             els = self.$raise_no_matching_pattern_error(cmvar)
           };
-          return self.$s("begin", self.$s("lvasgn", cmvar, from), $send(self, 'single_case_match', [cmvar].concat(Opal.to_a(cases)).concat([els])));
-        }, $PatternMatching_on_case_match$4.$$arity = 1);
+          return self.$s("begin", self.$s("lvasgn", cmvar, from), $send(self, 'single_case_match', [cmvar].concat($to_a(cases)).concat([els])));
+        }, 1);
         self.$private();
         
-        Opal.def(self, '$raise_no_matching_pattern_error', $PatternMatching_raise_no_matching_pattern_error$5 = function $$raise_no_matching_pattern_error(from) {
+        $def(self, '$raise_no_matching_pattern_error', function $$raise_no_matching_pattern_error(from) {
           var self = this;
 
-          return self.$s("send", nil, "raise", self.$s("const", nil, "NoMatchingPatternError"), self.$s("lvar", from))
-        }, $PatternMatching_raise_no_matching_pattern_error$5.$$arity = 1);
+          return self.$s("send", nil, "raise", self.$s("const", self.$s("cbase"), "NoMatchingPatternError"), self.$s("lvar", from))
+        }, 1);
         
-        Opal.def(self, '$single_case_match', $PatternMatching_single_case_match$6 = function $$single_case_match(from, $a, $b) {
-          var $post_args, cases, els, $c, self = this, cas = nil, pat = nil, if_guard = nil, body = nil, guard = nil, $case = nil;
+        $def(self, '$single_case_match', function $$single_case_match(from, $a, $b) {
+          var $post_args, cases, els, $c, self = this, cas = nil, pat = nil, if_guard = nil, body = nil, guard = nil, $ret_or_1 = nil;
 
           
           
-          $post_args = Opal.slice.call(arguments, 1, arguments.length);
+          $post_args = Opal.slice.call(arguments, 1);
           
           cases = $post_args.splice(0, $post_args.length - 1);;
           
-          els = $post_args[0];
-          $post_args.splice(0, 1);
-          if (els == null) {
-            els = nil
-          };
+          els = $post_args.shift();
+          if (els == null) els = nil;;
           cas = cases.$shift();
-          $c = [].concat(Opal.to_a(cas)), (pat = ($c[0] == null ? nil : $c[0])), (if_guard = ($c[1] == null ? nil : $c[1])), (body = ($c[2] == null ? nil : $c[2])), $c;
+          $c = [].concat($to_a(cas)), (pat = ($c[0] == null ? nil : $c[0])), (if_guard = ($c[1] == null ? nil : $c[1])), (body = ($c[2] == null ? nil : $c[2])), $c;
           pat = self.$convert_full_pattern(from, pat);
           if ($truthy(if_guard)) {
             
-            $c = [].concat(Opal.to_a(if_guard)), (guard = ($c[0] == null ? nil : $c[0])), $c;
-            $case = if_guard.$type();
-            if ("if_guard"['$===']($case)) {pat = self.$s("and", pat, guard)}
-            else if ("unless_guard"['$===']($case)) {pat = self.$s("and", pat, self.$s("send", guard, "!"))};};
-          return self.$s("if", pat, self.$process(body), (function() {if ($truthy(cases['$empty?']()['$!']())) {
-            return $send(self, 'single_case_match', [from].concat(Opal.to_a(cases)).concat([els]))
-          } else if ($truthy(els['$!='](self.$s("empty_else")))) {
-            return els
-          } else {
-            return nil
-          }; return nil; })());
-        }, $PatternMatching_single_case_match$6.$$arity = -3);
+            $c = [].concat($to_a(if_guard)), (guard = ($c[0] == null ? nil : $c[0])), $c;
+            if ($eqeqeq("if_guard", ($ret_or_1 = if_guard.$type()))) {
+              pat = self.$s("and", pat, guard)
+            } else if ($eqeqeq("unless_guard", $ret_or_1)) {
+              pat = self.$s("and", pat, self.$s("send", guard, "!"))
+            } else {
+              nil
+            };
+          };
+          return self.$s("if", pat, self.$process(body), ($not(cases['$empty?']()) ? ($send(self, 'single_case_match', [from].concat($to_a(cases)).concat([els]))) : ($neqeq(els, self.$s("empty_else")) ? (els) : nil)));
+        }, -3);
         
-        Opal.def(self, '$convert_full_pattern', $PatternMatching_convert_full_pattern$7 = function $$convert_full_pattern(from, pat) {
+        $def(self, '$convert_full_pattern', function $$convert_full_pattern(from, pat) {
           var self = this, converter = nil;
 
           
-          if (from.$class()['$==']($$($nesting, 'Symbol'))) {
-            from = self.$s("lvar", from)};
-          converter = $$($nesting, 'PatternConverter').$new(pat);
+          if ($eqeq(from.$class(), $$('Symbol'))) {
+            from = self.$s("lvar", from)
+          };
+          converter = $$('PatternConverter').$new(pat);
           converter['$run!']();
-          return self.$s("masgn", $send(self, 's', ["mlhs"].concat(Opal.to_a(converter.$variables()))), self.$s("send", self.$s("const", self.$s("cbase"), "PatternMatching"), "call", from, converter.$pattern()));
-        }, $PatternMatching_convert_full_pattern$7.$$arity = 2);
+          return self.$s("masgn", $send(self, 's', ["mlhs"].concat($to_a(converter.$variables()))), self.$s("send", self.$s("const", self.$s("cbase"), "PatternMatching"), "call", from, converter.$pattern()));
+        }, 2);
         return (function($base, $super, $parent_nesting) {
           var self = $klass($base, $super, 'PatternConverter');
 
-          var $nesting = [self].concat($parent_nesting), $PatternConverter_initialize$8, $PatternConverter_run$excl$9, $PatternConverter_pattern$10, $PatternConverter_variables$11, $PatternConverter_on_match_var$13, $PatternConverter_on_match_as$14, $PatternConverter_on_literal$15, $PatternConverter_on_pin$16, $PatternConverter_on_match_rest$17, $PatternConverter_on_match_alt$18, $PatternConverter_on_const_pattern$19, $PatternConverter_on_array_pattern$20, $PatternConverter_on_array_pattern_with_tail$22, $PatternConverter_on_hash_pattern$23, $PatternConverter_on_find_pattern$25, $PatternConverter_array$26, $PatternConverter_to_ast$27;
+          var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-          self.$$prototype.pat = self.$$prototype.outpat = self.$$prototype.variables = nil;
+          $proto.pat = $proto.outpat = $proto.variables = nil;
           
           
-          Opal.def(self, '$initialize', $PatternConverter_initialize$8 = function $$initialize(pat) {
+          $def(self, '$initialize', function $$initialize(pat) {
             var self = this;
 
             
             self.pat = pat;
             return (self.variables = []);
-          }, $PatternConverter_initialize$8.$$arity = 1);
+          }, 1);
           
-          Opal.def(self, '$run!', $PatternConverter_run$excl$9 = function() {
+          $def(self, '$run!', function $PatternConverter_run$excl$1() {
             var self = this;
 
             return (self.outpat = self.$process(self.pat))
-          }, $PatternConverter_run$excl$9.$$arity = 0);
+          }, 0);
           
-          Opal.def(self, '$pattern', $PatternConverter_pattern$10 = function $$pattern() {
+          $def(self, '$pattern', function $$pattern() {
             var self = this;
 
             return self.outpat
-          }, $PatternConverter_pattern$10.$$arity = 0);
+          }, 0);
           
-          Opal.def(self, '$variables', $PatternConverter_variables$11 = function $$variables() {
-            var $$12, self = this;
+          $def(self, '$variables', function $$variables() {
+            var self = this;
 
-            return $send(self.variables, 'map', [], ($$12 = function(i){var self = $$12.$$s == null ? this : $$12.$$s;
+            return $send(self.variables, 'map', [], function $$2(i){var self = $$2.$$s == null ? this : $$2.$$s;
 
               
               
-              if (i == null) {
-                i = nil;
-              };
-              return self.$s("lvasgn", i);}, $$12.$$s = self, $$12.$$arity = 1, $$12))
-          }, $PatternConverter_variables$11.$$arity = 0);
+              if (i == null) i = nil;;
+              return self.$s("lvasgn", i);}, {$$arity: 1, $$s: self})
+          }, 0);
           
-          Opal.def(self, '$on_match_var', $PatternConverter_on_match_var$13 = function $$on_match_var(node) {
+          $def(self, '$on_match_var', function $$on_match_var(node) {
             var $a, self = this, var$ = nil;
 
             
-            $a = [].concat(Opal.to_a(node)), (var$ = ($a[0] == null ? nil : $a[0])), $a;
+            $a = [].concat($to_a(node)), (var$ = ($a[0] == null ? nil : $a[0])), $a;
             self.variables['$<<'](var$);
             return self.$s("sym", "var");
-          }, $PatternConverter_on_match_var$13.$$arity = 1);
+          }, 1);
           
-          Opal.def(self, '$on_match_as', $PatternConverter_on_match_as$14 = function $$on_match_as(node) {
+          $def(self, '$on_match_as', function $$on_match_as(node) {
             var $a, self = this, pat = nil, save = nil;
 
             
-            $a = [].concat(Opal.to_a(node)), (pat = ($a[0] == null ? nil : $a[0])), (save = ($a[1] == null ? nil : $a[1])), $a;
+            $a = [].concat($to_a(node)), (pat = ($a[0] == null ? nil : $a[0])), (save = ($a[1] == null ? nil : $a[1])), $a;
             self.$process(save);
             return self.$array(self.$s("sym", "save"), self.$process(pat));
-          }, $PatternConverter_on_match_as$14.$$arity = 1);
+          }, 1);
           
-          Opal.def(self, '$on_literal', $PatternConverter_on_literal$15 = function $$on_literal(node) {
+          $def(self, '$on_literal', function $$on_literal(node) {
             var self = this;
 
             return self.$array(self.$s("sym", "lit"), node)
-          }, $PatternConverter_on_literal$15.$$arity = 1);
+          }, 1);
           $alias(self, "on_int", "on_literal");
           $alias(self, "on_float", "on_literal");
           $alias(self, "on_complex", "on_literal");
@@ -29878,13 +26615,13 @@ Opal.modules["opal/rewriters/pattern_matching"] = function(Opal) {
           $alias(self, "on_lambda", "on_literal");
           $alias(self, "on_begin", "on_literal");
           
-          Opal.def(self, '$on_pin', $PatternConverter_on_pin$16 = function $$on_pin(node) {
+          $def(self, '$on_pin', function $$on_pin(node) {
             var self = this;
 
             return self.$on_literal(node.$children().$first())
-          }, $PatternConverter_on_pin$16.$$arity = 1);
+          }, 1);
           
-          Opal.def(self, '$on_match_rest', $PatternConverter_on_match_rest$17 = function $$on_match_rest(node) {
+          $def(self, '$on_match_rest', function $$on_match_rest(node) {
             var self = this;
 
             if ($truthy(node.$children()['$empty?']())) {
@@ -29892,131 +26629,131 @@ Opal.modules["opal/rewriters/pattern_matching"] = function(Opal) {
             } else {
               return self.$array(self.$s("sym", "rest"), self.$process(node.$children().$first()))
             }
-          }, $PatternConverter_on_match_rest$17.$$arity = 1);
+          }, 1);
           
-          Opal.def(self, '$on_match_alt', $PatternConverter_on_match_alt$18 = function $$on_match_alt(node) {
+          $def(self, '$on_match_alt', function $$on_match_alt(node) {
             var self = this;
 
-            return $send(self, 'array', [self.$s("sym", "any")].concat(Opal.to_a($send(node.$children(), 'map', [], self.$method("process").$to_proc()))))
-          }, $PatternConverter_on_match_alt$18.$$arity = 1);
+            return $send(self, 'array', [self.$s("sym", "any")].concat($to_a($send(node.$children(), 'map', [], self.$method("process").$to_proc()))))
+          }, 1);
           
-          Opal.def(self, '$on_const_pattern', $PatternConverter_on_const_pattern$19 = function $$on_const_pattern(node) {
+          $def(self, '$on_const_pattern', function $$on_const_pattern(node) {
             var self = this;
 
-            return $send(self, 'array', [self.$s("sym", "all")].concat(Opal.to_a($send(node.$children(), 'map', [], self.$method("process").$to_proc()))))
-          }, $PatternConverter_on_const_pattern$19.$$arity = 1);
+            return $send(self, 'array', [self.$s("sym", "all")].concat($to_a($send(node.$children(), 'map', [], self.$method("process").$to_proc()))))
+          }, 1);
           
-          Opal.def(self, '$on_array_pattern', $PatternConverter_on_array_pattern$20 = function $$on_array_pattern(node, tail) {
-            var $$21, self = this, children = nil, fixed_size = nil, array_size = nil;
+          $def(self, '$on_array_pattern', function $$on_array_pattern(node, tail) {
+            var self = this, children = nil, fixed_size = nil, array_size = nil;
 
             
             
-            if (tail == null) {
-              tail = false;
-            };
-            children = [].concat(Opal.to_a(node));
+            if (tail == null) tail = false;;
+            children = [].concat($to_a(node));
             if ($truthy(tail)) {
-              children['$<<'](self.$s("match_rest"))};
+              children['$<<'](self.$s("match_rest"))
+            };
             fixed_size = true;
             array_size = 0;
-            children = $send(children, 'each', [], ($$21 = function(i){var self = $$21.$$s == null ? this : $$21.$$s, $case = nil;
+            children = $send(children, 'each', [], function $$3(i){var $ret_or_1 = nil;
 
               
               
-              if (i == null) {
-                i = nil;
-              };
-              return (function() {$case = i.$type();
-              if ("match_rest"['$===']($case)) {return (fixed_size = false)}
-              else {return (array_size = $rb_plus(array_size, 1))}})();}, $$21.$$s = self, $$21.$$arity = 1, $$21));
+              if (i == null) i = nil;;
+              if ($eqeqeq("match_rest", ($ret_or_1 = i.$type()))) {
+                return (fixed_size = false)
+              } else {
+                return (array_size = $rb_plus(array_size, 1))
+              };}, 1);
             return self.$array(self.$s("sym", "array"), self.$to_ast(fixed_size), self.$to_ast(array_size), self.$to_ast($send(children, 'map', [], self.$method("process").$to_proc())));
-          }, $PatternConverter_on_array_pattern$20.$$arity = -2);
+          }, -2);
           
-          Opal.def(self, '$on_array_pattern_with_tail', $PatternConverter_on_array_pattern_with_tail$22 = function $$on_array_pattern_with_tail(node) {
+          $def(self, '$on_array_pattern_with_tail', function $$on_array_pattern_with_tail(node) {
             var self = this;
 
             return self.$on_array_pattern(node, true)
-          }, $PatternConverter_on_array_pattern_with_tail$22.$$arity = 1);
+          }, 1);
           
-          Opal.def(self, '$on_hash_pattern', $PatternConverter_on_hash_pattern$23 = function $$on_hash_pattern(node) {
-            var $$24, self = this, children = nil, any_size = nil;
+          $def(self, '$on_hash_pattern', function $$on_hash_pattern(node) {
+            var self = this, children = nil, any_size = nil;
 
             
-            children = [].concat(Opal.to_a(node));
-            any_size = (function() {if ($truthy(children['$empty?']())) {
-              return self.$to_ast(false)
-            } else {
-              return self.$to_ast(true)
-            }; return nil; })();
-            children = $send(children, 'map', [], ($$24 = function(i){var self = $$24.$$s == null ? this : $$24.$$s, $case = nil;
+            children = [].concat($to_a(node));
+            any_size = ($truthy(children['$empty?']()) ? (self.$to_ast(false)) : (self.$to_ast(true)));
+            children = $send(children, 'map', [], function $$4(i){var self = $$4.$$s == null ? this : $$4.$$s, $ret_or_1 = nil;
 
               
               
-              if (i == null) {
-                i = nil;
-              };
-              return (function() {$case = i.$type();
-              if ("pair"['$===']($case)) {return self.$array(i.$children()['$[]'](0), self.$process(i.$children()['$[]'](1)))}
-              else if ("match_var"['$===']($case)) {return self.$array(self.$s("sym", i.$children()['$[]'](0)), self.$process(i))}
-              else if ("match_nil_pattern"['$===']($case)) {
-              any_size = self.$to_ast(false);
-              return nil;}
-              else if ("match_rest"['$===']($case)) {
-              if ($truthy(i.$children().$first())) {
-                any_size = self.$process(i.$children().$first())
+              if (i == null) i = nil;;
+              if ($eqeqeq("pair", ($ret_or_1 = i.$type()))) {
+                return self.$array(i.$children()['$[]'](0), self.$process(i.$children()['$[]'](1)))
+              } else if ($eqeqeq("match_var", $ret_or_1)) {
+                return self.$array(self.$s("sym", i.$children()['$[]'](0)), self.$process(i))
+              } else if ($eqeqeq("match_nil_pattern", $ret_or_1)) {
+                
+                any_size = self.$to_ast(false);
+                return nil;
+              } else if ($eqeqeq("match_rest", $ret_or_1)) {
+                
+                if ($truthy(i.$children().$first())) {
+                  any_size = self.$process(i.$children().$first())
+                } else {
+                  any_size = self.$to_ast(true)
+                };
+                return nil;
               } else {
-                any_size = self.$to_ast(true)
-              };
-              return nil;}
-              else { return nil }})();}, $$24.$$s = self, $$24.$$arity = 1, $$24)).$compact();
-            return self.$array(self.$s("sym", "hash"), any_size, $send(self, 'array', Opal.to_a(children)));
-          }, $PatternConverter_on_hash_pattern$23.$$arity = 1);
+                return nil
+              };}, {$$arity: 1, $$s: self}).$compact();
+            return self.$array(self.$s("sym", "hash"), any_size, $send(self, 'array', $to_a(children)));
+          }, 1);
           
-          Opal.def(self, '$on_find_pattern', $PatternConverter_on_find_pattern$25 = function $$on_find_pattern(node) {
+          $def(self, '$on_find_pattern', function $$on_find_pattern(node) {
             var self = this, children = nil;
 
             
-            children = [].concat(Opal.to_a(node));
+            children = [].concat($to_a(node));
             children = $send(children, 'map', [], self.$method("process").$to_proc());
-            return self.$array(self.$s("sym", "find"), $send(self, 'array', Opal.to_a(children)));
-          }, $PatternConverter_on_find_pattern$25.$$arity = 1);
+            return self.$array(self.$s("sym", "find"), $send(self, 'array', $to_a(children)));
+          }, 1);
           self.$private();
           
-          Opal.def(self, '$array', $PatternConverter_array$26 = function $$array($a) {
+          $def(self, '$array', function $$array($a) {
             var $post_args, args, self = this;
 
             
             
-            $post_args = Opal.slice.call(arguments, 0, arguments.length);
+            $post_args = Opal.slice.call(arguments);
             
             args = $post_args;;
             return self.$to_ast(args);
-          }, $PatternConverter_array$26.$$arity = -1);
-          return (Opal.def(self, '$to_ast', $PatternConverter_to_ast$27 = function $$to_ast(val) {
-            var self = this, $case = nil;
-
-            return (function() {$case = val;
-            if ($$($nesting, 'Array')['$===']($case)) {return $send(self, 's', ["array"].concat(Opal.to_a(val)))}
-            else if ($$($nesting, 'Integer')['$===']($case)) {return self.$s("int", val)}
-            else if (true['$===']($case)) {return self.$s("true")}
-            else if (false['$===']($case)) {return self.$s("false")}
-            else if (nil['$===']($case)) {return self.$s("nil")}
-            else { return nil }})()
-          }, $PatternConverter_to_ast$27.$$arity = 1), nil) && 'to_ast';
-        })($nesting[0], $$$($$$($$$('::', 'Opal'), 'Rewriters'), 'Base'), $nesting);
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+          }, -1);
+          return $def(self, '$to_ast', function $$to_ast(val) {
+            var self = this, $ret_or_1 = nil;
+
+            if ($eqeqeq($$('Array'), ($ret_or_1 = val))) {
+              return $send(self, 's', ["array"].concat($to_a(val)))
+            } else if ($eqeqeq($$('Integer'), $ret_or_1)) {
+              return self.$s("int", val)
+            } else if ($eqeqeq(true, $ret_or_1)) {
+              return self.$s("true")
+            } else if ($eqeqeq(false, $ret_or_1)) {
+              return self.$s("false")
+            } else if ($eqeqeq(nil, $ret_or_1)) {
+              return self.$s("nil")
+            } else {
+              return nil
+            }
+          }, 1);
+        })($nesting[0], $$$($$$($Opal, 'Rewriters'), 'Base'), $nesting);
+      })($nesting[0], $$('Base'), $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/rewriters/logical_operator_assignment"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $class_variable_set = Opal.class_variable_set, $truthy = Opal.truthy, $class_variable_get = Opal.class_variable_get, $lambda = Opal.lambda, $slice = Opal.slice, $hash2 = Opal.hash2, $send = Opal.send, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["opal/rewriters/logical_operator_assignment"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $class_variable_set = Opal.class_variable_set, $defs = Opal.defs, $truthy = Opal.truthy, $class_variable_get = Opal.class_variable_get, $rb_plus = Opal.rb_plus, $const_set = Opal.const_set, $lambda = Opal.lambda, $eqeq = Opal.eqeq, $to_a = Opal.to_a, $slice = Opal.slice, $hash2 = Opal.hash2, $send = Opal.send, $def = Opal.def, $send2 = Opal.send2, $find_super = Opal.find_super;
 
-  Opal.add_stubs(['$require', '$+', '$updated', '$s', '$include?', '$==', '$[]', '$type', '$new_temp', '$freeze', '$call', '$fetch', '$error', '$process']);
+  Opal.add_stubs('require,+,updated,s,==,include?,[],type,new_temp,freeze,call,fetch,error,process');
   
   self.$require("opal/rewriters/base");
   return (function($base, $parent_nesting) {
@@ -30027,177 +26764,145 @@ Opal.modules["opal/rewriters/logical_operator_assignment"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Rewriters');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'LogicalOperatorAssignment');
 
-        var $nesting = [self].concat($parent_nesting), $LogicalOperatorAssignment_reset_tmp_counter$excl$1, $LogicalOperatorAssignment_new_temp$2, $LogicalOperatorAssignment$3, $LogicalOperatorAssignment_on_or_asgn$7, $LogicalOperatorAssignment_on_and_asgn$9, $LogicalOperatorAssignment_on_defined$ques$11;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
         
-        Opal.defs(self, '$reset_tmp_counter!', $LogicalOperatorAssignment_reset_tmp_counter$excl$1 = function() {
-          var self = this;
-
+        $defs(self, '$reset_tmp_counter!', function $LogicalOperatorAssignment_reset_tmp_counter$excl$1() {
+          
           return $class_variable_set($nesting[0], '@@counter', 0)
-        }, $LogicalOperatorAssignment_reset_tmp_counter$excl$1.$$arity = 0);
-        Opal.defs(self, '$new_temp', $LogicalOperatorAssignment_new_temp$2 = function $$new_temp() {
-          var $a, self = this, $ret_or_1 = nil;
+        }, 0);
+        $defs(self, '$new_temp', function $$new_temp() {
+          var $a, $ret_or_1 = nil;
 
           
-          $class_variable_set($nesting[0], '@@counter', (function() {if ($truthy((($a = $nesting[0].$$cvars['@@counter'], $a != null) ? 'class variable' : nil))) {
-            
-            if ($truthy(($ret_or_1 = $class_variable_get($nesting[0], '@@counter', false)))) {
-              return $ret_or_1
-            } else {
-              return 0
-            };
-          } else {
-            return 0
-          }; return nil; })());
+          $class_variable_set($nesting[0], '@@counter', ($truthy((($a = $nesting[0].$$cvars['@@counter'], $a != null) ? 'class variable' : nil)) ? (($truthy(($ret_or_1 = $class_variable_get($nesting[0], '@@counter', false))) ? ($ret_or_1) : (0))) : (0)));
           $class_variable_set($nesting[0], '@@counter', $rb_plus($class_variable_get($nesting[0], '@@counter', false), 1));
-          return "" + "$logical_op_recvr_tmp_" + ($class_variable_get($nesting[0], '@@counter', false));
-        }, $LogicalOperatorAssignment_new_temp$2.$$arity = 0);
-        Opal.const_set($nesting[0], 'GET_SET', $lambda(($LogicalOperatorAssignment$3 = function(get_type, set_type){var self = $LogicalOperatorAssignment$3.$$s == null ? this : $LogicalOperatorAssignment$3.$$s, $$4;
+          return "$logical_op_recvr_tmp_" + ($class_variable_get($nesting[0], '@@counter', false));
+        }, 0);
+        $const_set($nesting[0], 'GET_SET', $lambda(function $LogicalOperatorAssignment$2(get_type, set_type){var self = $LogicalOperatorAssignment$2.$$s == null ? this : $LogicalOperatorAssignment$2.$$s;
 
           
           
-          if (get_type == null) {
-            get_type = nil;
-          };
+          if (get_type == null) get_type = nil;;
           
-          if (set_type == null) {
-            set_type = nil;
-          };
-          return $lambda(($$4 = function(lhs, rhs, root_type){var self = $$4.$$s == null ? this : $$4.$$s, get_node = nil, condition_node = nil, $ret_or_2 = nil, defined_node = nil;
+          if (set_type == null) set_type = nil;;
+          return $lambda(function $$3(lhs, rhs, root_type){var self = $$3.$$s == null ? this : $$3.$$s, get_node = nil, condition_node = nil, defined_node = nil;
 
             
             
-            if (lhs == null) {
-              lhs = nil;
-            };
+            if (lhs == null) lhs = nil;;
             
-            if (rhs == null) {
-              rhs = nil;
-            };
+            if (rhs == null) rhs = nil;;
             
-            if (root_type == null) {
-              root_type = nil;
-            };
+            if (root_type == null) root_type = nil;;
             get_node = lhs.$updated(get_type);
             condition_node = self.$s(root_type, get_node, rhs);
-            if ($truthy((function() {if ($truthy(($ret_or_2 = ["const", "cvar"]['$include?'](get_type)))) {
-              return root_type['$==']("or")
-            } else {
-              return $ret_or_2
-            }; return nil; })())) {
+            if (($truthy(["const", "cvar"]['$include?'](get_type)) && ($eqeq(root_type, "or")))) {
               
               defined_node = self.$s("defined?", get_node);
-              condition_node = self.$s("if", defined_node, self.$s("begin", condition_node), rhs);};
-            return lhs.$updated(set_type, [].concat(Opal.to_a(lhs)).concat([condition_node]));}, $$4.$$s = self, $$4.$$arity = 3, $$4));}, $LogicalOperatorAssignment$3.$$s = self, $LogicalOperatorAssignment$3.$$arity = 2, $LogicalOperatorAssignment$3)));
-        Opal.const_set($nesting[0], 'LocalVariableHandler', $$($nesting, 'GET_SET')['$[]']("lvar", "lvasgn"));
-        Opal.const_set($nesting[0], 'InstanceVariableHandler', $$($nesting, 'GET_SET')['$[]']("ivar", "ivasgn"));
-        Opal.const_set($nesting[0], 'ConstantHandler', $$($nesting, 'GET_SET')['$[]']("const", "casgn"));
-        Opal.const_set($nesting[0], 'GlobalVariableHandler', $$($nesting, 'GET_SET')['$[]']("gvar", "gvasgn"));
-        Opal.const_set($nesting[0], 'ClassVariableHandler', $$($nesting, 'GET_SET')['$[]']("cvar", "cvasgn"));
-        (function($base, $super, $parent_nesting) {
+              condition_node = self.$s("if", defined_node, self.$s("begin", condition_node), rhs);
+            };
+            return lhs.$updated(set_type, [].concat($to_a(lhs)).concat([condition_node]));}, {$$arity: 3, $$s: self});}, {$$arity: 2, $$s: self}));
+        $const_set($nesting[0], 'LocalVariableHandler', $$('GET_SET')['$[]']("lvar", "lvasgn"));
+        $const_set($nesting[0], 'InstanceVariableHandler', $$('GET_SET')['$[]']("ivar", "ivasgn"));
+        $const_set($nesting[0], 'ConstantHandler', $$('GET_SET')['$[]']("const", "casgn"));
+        $const_set($nesting[0], 'GlobalVariableHandler', $$('GET_SET')['$[]']("gvar", "gvasgn"));
+        $const_set($nesting[0], 'ClassVariableHandler', $$('GET_SET')['$[]']("cvar", "cvasgn"));
+        (function($base, $super) {
           var self = $klass($base, $super, 'SendHandler');
 
-          var $nesting = [self].concat($parent_nesting), $SendHandler_call$5;
-
-          return (Opal.defs(self, '$call', $SendHandler_call$5 = function $$call(lhs, rhs, root_type) {
-            var $a, self = this, recvr = nil, reader_method = nil, args = nil, $ret_or_3 = nil, recvr_tmp = nil, cache_recvr = nil, writer_method = nil, call_reader = nil, call_writer = nil, get_or_set = nil;
+          
+          return $defs(self, '$call', function $$call(lhs, rhs, root_type) {
+            var $a, self = this, recvr = nil, reader_method = nil, args = nil, recvr_tmp = nil, cache_recvr = nil, writer_method = nil, call_reader = nil, call_writer = nil, get_or_set = nil;
 
             
-            $a = [].concat(Opal.to_a(lhs)), (recvr = ($a[0] == null ? nil : $a[0])), (reader_method = ($a[1] == null ? nil : $a[1])), (args = $slice.call($a, 2)), $a;
-            if ($truthy((function() {if ($truthy(($ret_or_3 = recvr))) {
-              return recvr.$type()['$==']("send")
-            } else {
-              return $ret_or_3
-            }; return nil; })())) {
+            $a = [].concat($to_a(lhs)), (recvr = ($a[0] == null ? nil : $a[0])), (reader_method = ($a[1] == null ? nil : $a[1])), (args = $slice.call($a, 2)), $a;
+            if (($truthy(recvr) && ($eqeq(recvr.$type(), "send")))) {
               
               recvr_tmp = self.$new_temp();
               cache_recvr = self.$s("lvasgn", recvr_tmp, recvr);
-              recvr = self.$s("js_tmp", recvr_tmp);};
+              recvr = self.$s("js_tmp", recvr_tmp);
+            };
             writer_method = "" + (reader_method) + "=";
-            call_reader = lhs.$updated("send", [recvr, reader_method].concat(Opal.to_a(args)));
-            call_writer = lhs.$updated("send", [recvr, writer_method].concat(Opal.to_a(args)).concat([rhs]));
+            call_reader = lhs.$updated("send", [recvr, reader_method].concat($to_a(args)));
+            call_writer = lhs.$updated("send", [recvr, writer_method].concat($to_a(args)).concat([rhs]));
             get_or_set = self.$s(root_type, call_reader, call_writer);
             if ($truthy(cache_recvr)) {
               return self.$s("begin", cache_recvr, get_or_set)
             } else {
               return get_or_set
             };
-          }, $SendHandler_call$5.$$arity = 3), nil) && 'call'
-        })($nesting[0], self, $nesting);
-        (function($base, $super, $parent_nesting) {
+          }, 3)
+        })($nesting[0], self);
+        (function($base, $super) {
           var self = $klass($base, $super, 'ConditionalSendHandler');
 
-          var $nesting = [self].concat($parent_nesting), $ConditionalSendHandler_call$6;
-
-          return (Opal.defs(self, '$call', $ConditionalSendHandler_call$6 = function $$call(lhs, rhs, root_type) {
+          
+          return $defs(self, '$call', function $$call(lhs, rhs, root_type) {
             var $a, self = this, recvr = nil, meth = nil, args = nil, recvr_tmp = nil, cache_recvr = nil, recvr_is_nil = nil, plain_send = nil, plain_or_asgn = nil;
 
             
             root_type = "" + (root_type) + "_asgn";
-            $a = [].concat(Opal.to_a(lhs)), (recvr = ($a[0] == null ? nil : $a[0])), (meth = ($a[1] == null ? nil : $a[1])), (args = $slice.call($a, 2)), $a;
+            $a = [].concat($to_a(lhs)), (recvr = ($a[0] == null ? nil : $a[0])), (meth = ($a[1] == null ? nil : $a[1])), (args = $slice.call($a, 2)), $a;
             recvr_tmp = self.$new_temp();
             cache_recvr = self.$s("lvasgn", recvr_tmp, recvr);
             recvr = self.$s("js_tmp", recvr_tmp);
             recvr_is_nil = self.$s("send", recvr, "nil?");
-            plain_send = lhs.$updated("send", [recvr, meth].concat(Opal.to_a(args)));
+            plain_send = lhs.$updated("send", [recvr, meth].concat($to_a(args)));
             plain_or_asgn = self.$s(root_type, plain_send, rhs);
             return self.$s("begin", cache_recvr, self.$s("if", recvr_is_nil, self.$s("nil"), plain_or_asgn));
-          }, $ConditionalSendHandler_call$6.$$arity = 3), nil) && 'call'
-        })($nesting[0], self, $nesting);
-        Opal.const_set($nesting[0], 'HANDLERS', $hash2(["lvasgn", "ivasgn", "casgn", "gvasgn", "cvasgn", "send", "csend"], {"lvasgn": $$($nesting, 'LocalVariableHandler'), "ivasgn": $$($nesting, 'InstanceVariableHandler'), "casgn": $$($nesting, 'ConstantHandler'), "gvasgn": $$($nesting, 'GlobalVariableHandler'), "cvasgn": $$($nesting, 'ClassVariableHandler'), "send": $$($nesting, 'SendHandler'), "csend": $$($nesting, 'ConditionalSendHandler')}).$freeze());
+          }, 3)
+        })($nesting[0], self);
+        $const_set($nesting[0], 'HANDLERS', $hash2(["lvasgn", "ivasgn", "casgn", "gvasgn", "cvasgn", "send", "csend"], {"lvasgn": $$('LocalVariableHandler'), "ivasgn": $$('InstanceVariableHandler'), "casgn": $$('ConstantHandler'), "gvasgn": $$('GlobalVariableHandler'), "cvasgn": $$('ClassVariableHandler'), "send": $$('SendHandler'), "csend": $$('ConditionalSendHandler')}).$freeze());
         
-        Opal.def(self, '$on_or_asgn', $LogicalOperatorAssignment_on_or_asgn$7 = function $$on_or_asgn(node) {
-          var $a, $$8, self = this, lhs = nil, rhs = nil, result = nil;
+        $def(self, '$on_or_asgn', function $$on_or_asgn(node) {
+          var $a, self = this, lhs = nil, rhs = nil, result = nil;
 
           
-          $a = [].concat(Opal.to_a(node)), (lhs = ($a[0] == null ? nil : $a[0])), (rhs = ($a[1] == null ? nil : $a[1])), $a;
-          result = $send($$($nesting, 'HANDLERS'), 'fetch', [lhs.$type()], ($$8 = function(){var self = $$8.$$s == null ? this : $$8.$$s;
+          $a = [].concat($to_a(node)), (lhs = ($a[0] == null ? nil : $a[0])), (rhs = ($a[1] == null ? nil : $a[1])), $a;
+          result = $send($$('HANDLERS'), 'fetch', [lhs.$type()], function $$4(){var self = $$4.$$s == null ? this : $$4.$$s;
 
-            return self.$error("" + "cannot handle LHS type: " + (lhs.$type()))}, $$8.$$s = self, $$8.$$arity = 0, $$8)).$call(lhs, rhs, "or");
+            return self.$error("cannot handle LHS type: " + (lhs.$type()))}, {$$arity: 0, $$s: self}).$call(lhs, rhs, "or");
           return self.$process(result);
-        }, $LogicalOperatorAssignment_on_or_asgn$7.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$on_and_asgn', $LogicalOperatorAssignment_on_and_asgn$9 = function $$on_and_asgn(node) {
-          var $a, $$10, self = this, lhs = nil, rhs = nil, result = nil;
+        $def(self, '$on_and_asgn', function $$on_and_asgn(node) {
+          var $a, self = this, lhs = nil, rhs = nil, result = nil;
 
           
-          $a = [].concat(Opal.to_a(node)), (lhs = ($a[0] == null ? nil : $a[0])), (rhs = ($a[1] == null ? nil : $a[1])), $a;
-          result = $send($$($nesting, 'HANDLERS'), 'fetch', [lhs.$type()], ($$10 = function(){var self = $$10.$$s == null ? this : $$10.$$s;
+          $a = [].concat($to_a(node)), (lhs = ($a[0] == null ? nil : $a[0])), (rhs = ($a[1] == null ? nil : $a[1])), $a;
+          result = $send($$('HANDLERS'), 'fetch', [lhs.$type()], function $$5(){var self = $$5.$$s == null ? this : $$5.$$s;
 
-            return self.$error("" + "cannot handle LHS type: " + (lhs.$type()))}, $$10.$$s = self, $$10.$$arity = 0, $$10)).$call(lhs, rhs, "and");
+            return self.$error("cannot handle LHS type: " + (lhs.$type()))}, {$$arity: 0, $$s: self}).$call(lhs, rhs, "and");
           return self.$process(result);
-        }, $LogicalOperatorAssignment_on_and_asgn$9.$$arity = 1);
-        Opal.const_set($nesting[0], 'ASSIGNMENT_STRING_NODE', self.$s("str", "assignment"));
-        return (Opal.def(self, '$on_defined?', $LogicalOperatorAssignment_on_defined$ques$11 = function(node) {
-          var $a, $iter = $LogicalOperatorAssignment_on_defined$ques$11.$$p, $yield = $iter || nil, self = this, inner = nil, _ = nil;
+        }, 1);
+        $const_set($nesting[0], 'ASSIGNMENT_STRING_NODE', self.$s("str", "assignment"));
+        return $def(self, '$on_defined?', function $LogicalOperatorAssignment_on_defined$ques$6(node) {
+          var $a, $yield = $LogicalOperatorAssignment_on_defined$ques$6.$$p || nil, self = this, inner = nil, _ = nil;
 
-          if ($iter) $LogicalOperatorAssignment_on_defined$ques$11.$$p = null;
+          delete $LogicalOperatorAssignment_on_defined$ques$6.$$p;
           
-          $a = [].concat(Opal.to_a(node)), (inner = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $a;
+          $a = [].concat($to_a(node)), (inner = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $a;
           if ($truthy(["or_asgn", "and_asgn"]['$include?'](inner.$type()))) {
-            return $$($nesting, 'ASSIGNMENT_STRING_NODE')
+            return $$('ASSIGNMENT_STRING_NODE')
           } else {
-            return $send2(self, $find_super(self, 'on_defined?', $LogicalOperatorAssignment_on_defined$ques$11, false, true), 'on_defined?', [node], null)
+            return $send2(self, $find_super(self, 'on_defined?', $LogicalOperatorAssignment_on_defined$ques$6, false, true), 'on_defined?', [node], null)
           };
-        }, $LogicalOperatorAssignment_on_defined$ques$11.$$arity = 1), nil) && 'on_defined?';
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+        }, 1);
+      })($nesting[0], $$('Base'), $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/rewriters/binary_operator_assignment"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $class_variable_set = Opal.class_variable_set, $truthy = Opal.truthy, $class_variable_get = Opal.class_variable_get, $lambda = Opal.lambda, $slice = Opal.slice, $hash2 = Opal.hash2, $send = Opal.send, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["opal/rewriters/binary_operator_assignment"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $class_variable_set = Opal.class_variable_set, $defs = Opal.defs, $truthy = Opal.truthy, $class_variable_get = Opal.class_variable_get, $rb_plus = Opal.rb_plus, $const_set = Opal.const_set, $lambda = Opal.lambda, $to_a = Opal.to_a, $slice = Opal.slice, $eqeq = Opal.eqeq, $hash2 = Opal.hash2, $send = Opal.send, $def = Opal.def, $send2 = Opal.send2, $find_super = Opal.find_super;
 
-  Opal.add_stubs(['$require', '$+', '$updated', '$s', '$[]', '$==', '$type', '$new_temp', '$freeze', '$call', '$fetch', '$error', '$process']);
+  Opal.add_stubs('require,+,updated,[],==,type,new_temp,s,freeze,call,fetch,error,process');
   
   self.$require("opal/rewriters/base");
   return (function($base, $parent_nesting) {
@@ -30208,154 +26913,129 @@ Opal.modules["opal/rewriters/binary_operator_assignment"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Rewriters');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'BinaryOperatorAssignment');
 
-        var $nesting = [self].concat($parent_nesting), $BinaryOperatorAssignment_reset_tmp_counter$excl$1, $BinaryOperatorAssignment_new_temp$2, $BinaryOperatorAssignment$3, $BinaryOperatorAssignment_on_op_asgn$7, $BinaryOperatorAssignment_on_defined$ques$9;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
         
-        Opal.defs(self, '$reset_tmp_counter!', $BinaryOperatorAssignment_reset_tmp_counter$excl$1 = function() {
-          var self = this;
-
+        $defs(self, '$reset_tmp_counter!', function $BinaryOperatorAssignment_reset_tmp_counter$excl$1() {
+          
           return $class_variable_set($nesting[0], '@@counter', 0)
-        }, $BinaryOperatorAssignment_reset_tmp_counter$excl$1.$$arity = 0);
-        Opal.defs(self, '$new_temp', $BinaryOperatorAssignment_new_temp$2 = function $$new_temp() {
-          var $a, self = this, $ret_or_1 = nil;
+        }, 0);
+        $defs(self, '$new_temp', function $$new_temp() {
+          var $a, $ret_or_1 = nil;
 
           
-          $class_variable_set($nesting[0], '@@counter', (function() {if ($truthy((($a = $nesting[0].$$cvars['@@counter'], $a != null) ? 'class variable' : nil))) {
-            
-            if ($truthy(($ret_or_1 = $class_variable_get($nesting[0], '@@counter', false)))) {
-              return $ret_or_1
-            } else {
-              return 0
-            };
-          } else {
-            return 0
-          }; return nil; })());
+          $class_variable_set($nesting[0], '@@counter', ($truthy((($a = $nesting[0].$$cvars['@@counter'], $a != null) ? 'class variable' : nil)) ? (($truthy(($ret_or_1 = $class_variable_get($nesting[0], '@@counter', false))) ? ($ret_or_1) : (0))) : (0)));
           $class_variable_set($nesting[0], '@@counter', $rb_plus($class_variable_get($nesting[0], '@@counter', false), 1));
-          return "" + "$binary_op_recvr_tmp_" + ($class_variable_get($nesting[0], '@@counter', false));
-        }, $BinaryOperatorAssignment_new_temp$2.$$arity = 0);
-        Opal.const_set($nesting[0], 'GET_SET', $lambda(($BinaryOperatorAssignment$3 = function(get_type, set_type){var self = $BinaryOperatorAssignment$3.$$s == null ? this : $BinaryOperatorAssignment$3.$$s, $$4;
-
+          return "$binary_op_recvr_tmp_" + ($class_variable_get($nesting[0], '@@counter', false));
+        }, 0);
+        $const_set($nesting[0], 'GET_SET', $lambda(function $BinaryOperatorAssignment$2(get_type, set_type){
           
           
-          if (get_type == null) {
-            get_type = nil;
-          };
+          if (get_type == null) get_type = nil;;
           
-          if (set_type == null) {
-            set_type = nil;
-          };
-          return $lambda(($$4 = function(lhs, operation, rhs){var self = $$4.$$s == null ? this : $$4.$$s, get_node = nil, set_node = nil;
+          if (set_type == null) set_type = nil;;
+          return $lambda(function $$3(node, lhs, operation, rhs){var get_node = nil, set_node = nil;
 
             
             
-            if (lhs == null) {
-              lhs = nil;
-            };
+            if (node == null) node = nil;;
             
-            if (operation == null) {
-              operation = nil;
-            };
+            if (lhs == null) lhs = nil;;
             
-            if (rhs == null) {
-              rhs = nil;
-            };
+            if (operation == null) operation = nil;;
+            
+            if (rhs == null) rhs = nil;;
             get_node = lhs.$updated(get_type);
-            set_node = self.$s("send", get_node, operation, rhs);
-            return lhs.$updated(set_type, [].concat(Opal.to_a(lhs)).concat([set_node]));}, $$4.$$s = self, $$4.$$arity = 3, $$4));}, $BinaryOperatorAssignment$3.$$s = self, $BinaryOperatorAssignment$3.$$arity = 2, $BinaryOperatorAssignment$3)));
-        Opal.const_set($nesting[0], 'LocalVariableHandler', $$($nesting, 'GET_SET')['$[]']("lvar", "lvasgn"));
-        Opal.const_set($nesting[0], 'InstanceVariableHandler', $$($nesting, 'GET_SET')['$[]']("ivar", "ivasgn"));
-        Opal.const_set($nesting[0], 'ConstantHandler', $$($nesting, 'GET_SET')['$[]']("const", "casgn"));
-        Opal.const_set($nesting[0], 'GlobalVariableHandler', $$($nesting, 'GET_SET')['$[]']("gvar", "gvasgn"));
-        Opal.const_set($nesting[0], 'ClassVariableHandler', $$($nesting, 'GET_SET')['$[]']("cvar", "cvasgn"));
-        (function($base, $super, $parent_nesting) {
+            set_node = node.$updated("send", [get_node, operation, rhs]);
+            return lhs.$updated(set_type, [].concat($to_a(lhs)).concat([set_node]));}, 4);}, 2));
+        $const_set($nesting[0], 'LocalVariableHandler', $$('GET_SET')['$[]']("lvar", "lvasgn"));
+        $const_set($nesting[0], 'InstanceVariableHandler', $$('GET_SET')['$[]']("ivar", "ivasgn"));
+        $const_set($nesting[0], 'ConstantHandler', $$('GET_SET')['$[]']("const", "casgn"));
+        $const_set($nesting[0], 'GlobalVariableHandler', $$('GET_SET')['$[]']("gvar", "gvasgn"));
+        $const_set($nesting[0], 'ClassVariableHandler', $$('GET_SET')['$[]']("cvar", "cvasgn"));
+        (function($base, $super) {
           var self = $klass($base, $super, 'SendHandler');
 
-          var $nesting = [self].concat($parent_nesting), $SendHandler_call$5;
-
-          return (Opal.defs(self, '$call', $SendHandler_call$5 = function $$call(lhs, operation, rhs) {
-            var $a, self = this, recvr = nil, reader_method = nil, args = nil, $ret_or_2 = nil, recvr_tmp = nil, cache_recvr = nil, writer_method = nil, call_reader = nil, call_op = nil, call_writer = nil;
+          
+          return $defs(self, '$call', function $$call(node, lhs, operation, rhs) {
+            var $a, self = this, recvr = nil, reader_method = nil, args = nil, recvr_tmp = nil, cache_recvr = nil, writer_method = nil, call_reader = nil, call_op = nil, call_writer = nil;
 
             
-            $a = [].concat(Opal.to_a(lhs)), (recvr = ($a[0] == null ? nil : $a[0])), (reader_method = ($a[1] == null ? nil : $a[1])), (args = $slice.call($a, 2)), $a;
-            if ($truthy((function() {if ($truthy(($ret_or_2 = recvr))) {
-              return recvr.$type()['$==']("send")
-            } else {
-              return $ret_or_2
-            }; return nil; })())) {
+            $a = [].concat($to_a(lhs)), (recvr = ($a[0] == null ? nil : $a[0])), (reader_method = ($a[1] == null ? nil : $a[1])), (args = $slice.call($a, 2)), $a;
+            if (($truthy(recvr) && ($eqeq(recvr.$type(), "send")))) {
               
               recvr_tmp = self.$new_temp();
               cache_recvr = self.$s("lvasgn", recvr_tmp, recvr);
-              recvr = self.$s("js_tmp", recvr_tmp);};
+              recvr = self.$s("js_tmp", recvr_tmp);
+            };
             writer_method = "" + (reader_method) + "=";
-            call_reader = lhs.$updated("send", [recvr, reader_method].concat(Opal.to_a(args)));
-            call_op = self.$s("send", call_reader, operation, rhs);
-            call_writer = lhs.$updated("send", [recvr, writer_method].concat(Opal.to_a(args)).concat([call_op]));
+            call_reader = lhs.$updated("send", [recvr, reader_method].concat($to_a(args)));
+            call_op = node.$updated("send", [call_reader, operation, rhs]);
+            call_writer = lhs.$updated("send", [recvr, writer_method].concat($to_a(args)).concat([call_op]));
             if ($truthy(cache_recvr)) {
-              return self.$s("begin", cache_recvr, call_writer)
+              return node.$updated("begin", [cache_recvr, call_writer])
             } else {
               return call_writer
             };
-          }, $SendHandler_call$5.$$arity = 3), nil) && 'call'
-        })($nesting[0], self, $nesting);
-        (function($base, $super, $parent_nesting) {
+          }, 4)
+        })($nesting[0], self);
+        (function($base, $super) {
           var self = $klass($base, $super, 'ConditionalSendHandler');
 
-          var $nesting = [self].concat($parent_nesting), $ConditionalSendHandler_call$6;
-
-          return (Opal.defs(self, '$call', $ConditionalSendHandler_call$6 = function $$call(lhs, operation, rhs) {
+          
+          return $defs(self, '$call', function $$call(node, lhs, operation, rhs) {
             var $a, self = this, recvr = nil, meth = nil, args = nil, recvr_tmp = nil, cache_recvr = nil, recvr_is_nil = nil, plain_send = nil, plain_op_asgn = nil;
 
             
-            $a = [].concat(Opal.to_a(lhs)), (recvr = ($a[0] == null ? nil : $a[0])), (meth = ($a[1] == null ? nil : $a[1])), (args = $slice.call($a, 2)), $a;
+            $a = [].concat($to_a(lhs)), (recvr = ($a[0] == null ? nil : $a[0])), (meth = ($a[1] == null ? nil : $a[1])), (args = $slice.call($a, 2)), $a;
             recvr_tmp = self.$new_temp();
             cache_recvr = self.$s("lvasgn", recvr_tmp, recvr);
             recvr = self.$s("js_tmp", recvr_tmp);
             recvr_is_nil = self.$s("send", recvr, "nil?");
-            plain_send = lhs.$updated("send", [recvr, meth].concat(Opal.to_a(args)));
-            plain_op_asgn = self.$s("op_asgn", plain_send, operation, rhs);
+            plain_send = lhs.$updated("send", [recvr, meth].concat($to_a(args)));
+            plain_op_asgn = node.$updated("op_asgn", [plain_send, operation, rhs]);
             return self.$s("begin", cache_recvr, self.$s("if", recvr_is_nil, self.$s("nil"), plain_op_asgn));
-          }, $ConditionalSendHandler_call$6.$$arity = 3), nil) && 'call'
-        })($nesting[0], self, $nesting);
-        Opal.const_set($nesting[0], 'HANDLERS', $hash2(["lvasgn", "ivasgn", "casgn", "gvasgn", "cvasgn", "send", "csend"], {"lvasgn": $$($nesting, 'LocalVariableHandler'), "ivasgn": $$($nesting, 'InstanceVariableHandler'), "casgn": $$($nesting, 'ConstantHandler'), "gvasgn": $$($nesting, 'GlobalVariableHandler'), "cvasgn": $$($nesting, 'ClassVariableHandler'), "send": $$($nesting, 'SendHandler'), "csend": $$($nesting, 'ConditionalSendHandler')}).$freeze());
+          }, 4)
+        })($nesting[0], self);
+        $const_set($nesting[0], 'HANDLERS', $hash2(["lvasgn", "ivasgn", "casgn", "gvasgn", "cvasgn", "send", "csend"], {"lvasgn": $$('LocalVariableHandler'), "ivasgn": $$('InstanceVariableHandler'), "casgn": $$('ConstantHandler'), "gvasgn": $$('GlobalVariableHandler'), "cvasgn": $$('ClassVariableHandler'), "send": $$('SendHandler'), "csend": $$('ConditionalSendHandler')}).$freeze());
         
-        Opal.def(self, '$on_op_asgn', $BinaryOperatorAssignment_on_op_asgn$7 = function $$on_op_asgn(node) {
-          var $a, $$8, self = this, lhs = nil, op = nil, rhs = nil, result = nil;
+        $def(self, '$on_op_asgn', function $$on_op_asgn(node) {
+          var $a, self = this, lhs = nil, op = nil, rhs = nil, result = nil;
 
           
-          $a = [].concat(Opal.to_a(node)), (lhs = ($a[0] == null ? nil : $a[0])), (op = ($a[1] == null ? nil : $a[1])), (rhs = ($a[2] == null ? nil : $a[2])), $a;
-          result = $send($$($nesting, 'HANDLERS'), 'fetch', [lhs.$type()], ($$8 = function(){var self = $$8.$$s == null ? this : $$8.$$s;
+          $a = [].concat($to_a(node)), (lhs = ($a[0] == null ? nil : $a[0])), (op = ($a[1] == null ? nil : $a[1])), (rhs = ($a[2] == null ? nil : $a[2])), $a;
+          result = $send($$('HANDLERS'), 'fetch', [lhs.$type()], function $$4(){var self = $$4.$$s == null ? this : $$4.$$s;
 
-            return self.$error("" + "cannot handle LHS type: " + (lhs.$type()))}, $$8.$$s = self, $$8.$$arity = 0, $$8)).$call(lhs, op, rhs);
+            return self.$error("cannot handle LHS type: " + (lhs.$type()))}, {$$arity: 0, $$s: self}).$call(node, lhs, op, rhs);
           return self.$process(result);
-        }, $BinaryOperatorAssignment_on_op_asgn$7.$$arity = 1);
-        Opal.const_set($nesting[0], 'ASSIGNMENT_STRING_NODE', self.$s("str", "assignment"));
-        return (Opal.def(self, '$on_defined?', $BinaryOperatorAssignment_on_defined$ques$9 = function(node) {
-          var $a, $iter = $BinaryOperatorAssignment_on_defined$ques$9.$$p, $yield = $iter || nil, self = this, inner = nil, _ = nil;
+        }, 1);
+        $const_set($nesting[0], 'ASSIGNMENT_STRING_NODE', self.$s("str", "assignment"));
+        return $def(self, '$on_defined?', function $BinaryOperatorAssignment_on_defined$ques$5(node) {
+          var $a, $yield = $BinaryOperatorAssignment_on_defined$ques$5.$$p || nil, self = this, inner = nil, _ = nil;
 
-          if ($iter) $BinaryOperatorAssignment_on_defined$ques$9.$$p = null;
+          delete $BinaryOperatorAssignment_on_defined$ques$5.$$p;
           
-          $a = [].concat(Opal.to_a(node)), (inner = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $a;
-          if (inner.$type()['$==']("op_asgn")) {
-            return $$($nesting, 'ASSIGNMENT_STRING_NODE')
+          $a = [].concat($to_a(node)), (inner = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $a;
+          if ($eqeq(inner.$type(), "op_asgn")) {
+            return $$('ASSIGNMENT_STRING_NODE')
           } else {
-            return $send2(self, $find_super(self, 'on_defined?', $BinaryOperatorAssignment_on_defined$ques$9, false, true), 'on_defined?', [node], null)
+            return $send2(self, $find_super(self, 'on_defined?', $BinaryOperatorAssignment_on_defined$ques$5, false, true), 'on_defined?', [node], null)
           };
-        }, $BinaryOperatorAssignment_on_defined$ques$9.$$arity = 1), nil) && 'on_defined?';
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+        }, 1);
+      })($nesting[0], $$('Base'), $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/rewriters/hashes/key_duplicates_rewriter"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $truthy = Opal.truthy;
+Opal.modules["opal/rewriters/hashes/key_duplicates_rewriter"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $def = Opal.def, $send2 = Opal.send2, $find_super = Opal.find_super, $to_a = Opal.to_a, $truthy = Opal.truthy, $eqeq = Opal.eqeq, $Opal = Opal.Opal;
 
-  Opal.add_stubs(['$require', '$new', '$include?', '$type', '$<<', '$==', '$process_regular_node', '$updated', '$inspect', '$warn']);
+  Opal.add_stubs('require,new,include?,type,<<,==,process_regular_node,updated,inspect,warn');
   
   self.$require("opal/rewriters/base");
   self.$require("set");
@@ -30377,91 +27057,88 @@ Opal.modules["opal/rewriters/hashes/key_duplicates_rewriter"] = function(Opal) {
         return (function($base, $super, $parent_nesting) {
           var self = $klass($base, $super, 'KeyDuplicatesRewriter');
 
-          var $nesting = [self].concat($parent_nesting), $KeyDuplicatesRewriter_initialize$1, $KeyDuplicatesRewriter_on_hash$2, $KeyDuplicatesRewriter_on_pair$3, $KeyDuplicatesRewriter_on_kwsplat$4;
+          var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-          self.$$prototype.keys = nil;
+          $proto.keys = nil;
           
           
-          Opal.def(self, '$initialize', $KeyDuplicatesRewriter_initialize$1 = function $$initialize() {
+          $def(self, '$initialize', function $$initialize() {
             var self = this;
 
-            return (self.keys = $$($nesting, 'UniqKeysSet').$new())
-          }, $KeyDuplicatesRewriter_initialize$1.$$arity = 0);
+            return (self.keys = $$('UniqKeysSet').$new())
+          }, 0);
           
-          Opal.def(self, '$on_hash', $KeyDuplicatesRewriter_on_hash$2 = function $$on_hash(node) {
-            var $a, $iter = $KeyDuplicatesRewriter_on_hash$2.$$p, $yield = $iter || nil, self = this, previous_keys = nil;
+          $def(self, '$on_hash', function $$on_hash(node) {
+            var $a, $yield = $$on_hash.$$p || nil, self = this, previous_keys = nil;
 
-            if ($iter) $KeyDuplicatesRewriter_on_hash$2.$$p = null;
+            delete $$on_hash.$$p;
             return (function() { try {
             
-            $a = [self.keys, $$($nesting, 'UniqKeysSet').$new()], (previous_keys = $a[0]), (self.keys = $a[1]), $a;
-            return $send2(self, $find_super(self, 'on_hash', $KeyDuplicatesRewriter_on_hash$2, false, true), 'on_hash', [node], null);
+            $a = [self.keys, $$('UniqKeysSet').$new()], (previous_keys = $a[0]), (self.keys = $a[1]), $a;
+            return $send2(self, $find_super(self, 'on_hash', $$on_hash, false, true), 'on_hash', [node], null);
             } finally {
               (self.keys = previous_keys)
             }; })()
-          }, $KeyDuplicatesRewriter_on_hash$2.$$arity = 1);
+          }, 1);
           
-          Opal.def(self, '$on_pair', $KeyDuplicatesRewriter_on_pair$3 = function $$on_pair(node) {
-            var $a, $iter = $KeyDuplicatesRewriter_on_pair$3.$$p, $yield = $iter || nil, self = this, key = nil, _value = nil;
+          $def(self, '$on_pair', function $$on_pair(node) {
+            var $a, $yield = $$on_pair.$$p || nil, self = this, key = nil, _value = nil;
 
-            if ($iter) $KeyDuplicatesRewriter_on_pair$3.$$p = null;
+            delete $$on_pair.$$p;
             
-            $a = [].concat(Opal.to_a(node)), (key = ($a[0] == null ? nil : $a[0])), (_value = ($a[1] == null ? nil : $a[1])), $a;
+            $a = [].concat($to_a(node)), (key = ($a[0] == null ? nil : $a[0])), (_value = ($a[1] == null ? nil : $a[1])), $a;
             if ($truthy(["str", "sym"]['$include?'](key.$type()))) {
-              self.keys['$<<'](key)};
-            return $send2(self, $find_super(self, 'on_pair', $KeyDuplicatesRewriter_on_pair$3, false, true), 'on_pair', [node], null);
-          }, $KeyDuplicatesRewriter_on_pair$3.$$arity = 1);
+              self.keys['$<<'](key)
+            };
+            return $send2(self, $find_super(self, 'on_pair', $$on_pair, false, true), 'on_pair', [node], null);
+          }, 1);
           
-          Opal.def(self, '$on_kwsplat', $KeyDuplicatesRewriter_on_kwsplat$4 = function $$on_kwsplat(node) {
+          $def(self, '$on_kwsplat', function $$on_kwsplat(node) {
             var $a, self = this, hash = nil, _ = nil;
 
             
-            $a = [].concat(Opal.to_a(node)), (hash = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $a;
-            if (hash.$type()['$==']("hash")) {
-              hash = self.$process_regular_node(hash)};
+            $a = [].concat($to_a(node)), (hash = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $a;
+            if ($eqeq(hash.$type(), "hash")) {
+              hash = self.$process_regular_node(hash)
+            };
             return node.$updated(nil, [hash]);
-          }, $KeyDuplicatesRewriter_on_kwsplat$4.$$arity = 1);
+          }, 1);
           return (function($base, $super, $parent_nesting) {
             var self = $klass($base, $super, 'UniqKeysSet');
 
-            var $nesting = [self].concat($parent_nesting), $UniqKeysSet_initialize$5, $UniqKeysSet_$lt$lt$6;
+            var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-            self.$$prototype.set = nil;
+            $proto.set = nil;
             
             
-            Opal.def(self, '$initialize', $UniqKeysSet_initialize$5 = function $$initialize() {
+            $def(self, '$initialize', function $$initialize() {
               var self = this;
 
-              return (self.set = $$($nesting, 'Set').$new())
-            }, $UniqKeysSet_initialize$5.$$arity = 0);
-            return (Opal.def(self, '$<<', $UniqKeysSet_$lt$lt$6 = function(element) {
+              return (self.set = $$('Set').$new())
+            }, 0);
+            return $def(self, '$<<', function $UniqKeysSet_$lt$lt$1(element) {
               var $a, self = this, key = nil, _ = nil;
 
               if ($truthy(self.set['$include?'](element))) {
                 
-                $a = [].concat(Opal.to_a(element)), (key = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $a;
-                key = (function() {if (element.$type()['$==']("str")) {
-                  return key.$inspect()
-                } else {
-                  return "" + ":" + (key)
-                }; return nil; })();
-                return $$($nesting, 'Kernel').$warn("" + "warning: key " + (key) + " is duplicated and overwritten");
+                $a = [].concat($to_a(element)), (key = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $a;
+                key = ($eqeq(element.$type(), "str") ? (key.$inspect()) : (":" + (key)));
+                return $$('Kernel').$warn("warning: key " + (key) + " is duplicated and overwritten");
               } else {
                 return self.set['$<<'](element)
               }
-            }, $UniqKeysSet_$lt$lt$6.$$arity = 1), nil) && '<<';
+            }, 1);
           })($nesting[0], null, $nesting);
-        })($nesting[0], $$$($$$($$$('::', 'Opal'), 'Rewriters'), 'Base'), $nesting)
+        })($nesting[0], $$$($$$($Opal, 'Rewriters'), 'Base'), $nesting)
       })($nesting[0], $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/rewriters/dump_args"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $hash2 = Opal.hash2;
+Opal.modules["opal/rewriters/dump_args"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $to_a = Opal.to_a, $hash2 = Opal.hash2, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$updated']);
+  Opal.add_stubs('require,updated');
   
   self.$require("opal/rewriters/base");
   return (function($base, $parent_nesting) {
@@ -30472,56 +27149,51 @@ Opal.modules["opal/rewriters/dump_args"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Rewriters');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'DumpArgs');
 
-        var $nesting = [self].concat($parent_nesting), $DumpArgs_on_def$1, $DumpArgs_on_defs$2, $DumpArgs_on_iter$3;
-
         
         
-        Opal.def(self, '$on_def', $DumpArgs_on_def$1 = function $$on_def(node) {
-          var $a, $iter = $DumpArgs_on_def$1.$$p, $yield = $iter || nil, self = this, _mid = nil, args = nil, _body = nil;
+        
+        $def(self, '$on_def', function $$on_def(node) {
+          var $a, $yield = $$on_def.$$p || nil, self = this, _mid = nil, args = nil, _body = nil;
 
-          if ($iter) $DumpArgs_on_def$1.$$p = null;
+          delete $$on_def.$$p;
           
-          node = $send2(self, $find_super(self, 'on_def', $DumpArgs_on_def$1, false, true), 'on_def', [node], null);
-          $a = [].concat(Opal.to_a(node)), (_mid = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (_body = ($a[2] == null ? nil : $a[2])), $a;
+          node = $send2(self, $find_super(self, 'on_def', $$on_def, false, true), 'on_def', [node], null);
+          $a = [].concat($to_a(node)), (_mid = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (_body = ($a[2] == null ? nil : $a[2])), $a;
           return node.$updated(nil, nil, $hash2(["meta"], {"meta": $hash2(["original_args"], {"original_args": args})}));
-        }, $DumpArgs_on_def$1.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$on_defs', $DumpArgs_on_defs$2 = function $$on_defs(node) {
-          var $a, $iter = $DumpArgs_on_defs$2.$$p, $yield = $iter || nil, self = this, _recv = nil, _mid = nil, args = nil, _body = nil;
+        $def(self, '$on_defs', function $$on_defs(node) {
+          var $a, $yield = $$on_defs.$$p || nil, self = this, _recv = nil, _mid = nil, args = nil, _body = nil;
 
-          if ($iter) $DumpArgs_on_defs$2.$$p = null;
+          delete $$on_defs.$$p;
           
-          node = $send2(self, $find_super(self, 'on_defs', $DumpArgs_on_defs$2, false, true), 'on_defs', [node], null);
-          $a = [].concat(Opal.to_a(node)), (_recv = ($a[0] == null ? nil : $a[0])), (_mid = ($a[1] == null ? nil : $a[1])), (args = ($a[2] == null ? nil : $a[2])), (_body = ($a[3] == null ? nil : $a[3])), $a;
+          node = $send2(self, $find_super(self, 'on_defs', $$on_defs, false, true), 'on_defs', [node], null);
+          $a = [].concat($to_a(node)), (_recv = ($a[0] == null ? nil : $a[0])), (_mid = ($a[1] == null ? nil : $a[1])), (args = ($a[2] == null ? nil : $a[2])), (_body = ($a[3] == null ? nil : $a[3])), $a;
           return node.$updated(nil, nil, $hash2(["meta"], {"meta": $hash2(["original_args"], {"original_args": args})}));
-        }, $DumpArgs_on_defs$2.$$arity = 1);
-        return (Opal.def(self, '$on_iter', $DumpArgs_on_iter$3 = function $$on_iter(node) {
-          var $a, $iter = $DumpArgs_on_iter$3.$$p, $yield = $iter || nil, self = this, args = nil, _body = nil;
+        }, 1);
+        return $def(self, '$on_iter', function $$on_iter(node) {
+          var $a, $yield = $$on_iter.$$p || nil, self = this, args = nil, _body = nil;
 
-          if ($iter) $DumpArgs_on_iter$3.$$p = null;
+          delete $$on_iter.$$p;
           
-          node = $send2(self, $find_super(self, 'on_iter', $DumpArgs_on_iter$3, false, true), 'on_iter', [node], null);
-          $a = [].concat(Opal.to_a(node)), (args = ($a[0] == null ? nil : $a[0])), (_body = ($a[1] == null ? nil : $a[1])), $a;
+          node = $send2(self, $find_super(self, 'on_iter', $$on_iter, false, true), 'on_iter', [node], null);
+          $a = [].concat($to_a(node)), (args = ($a[0] == null ? nil : $a[0])), (_body = ($a[1] == null ? nil : $a[1])), $a;
           return node.$updated(nil, nil, $hash2(["meta"], {"meta": $hash2(["original_args"], {"original_args": args})}));
-        }, $DumpArgs_on_iter$3.$$arity = 1), nil) && 'on_iter';
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+        }, 1);
+      })($nesting[0], $$('Base'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/rewriters/mlhs_args"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $truthy = Opal.truthy, $send = Opal.send, $hash2 = Opal.hash2;
+Opal.modules["opal/rewriters/mlhs_args"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $to_a = Opal.to_a, $truthy = Opal.truthy, $def = Opal.def, $rb_plus = Opal.rb_plus, $send = Opal.send, $eqeq = Opal.eqeq, $hash2 = Opal.hash2;
 
-  Opal.add_stubs(['$require', '$new', '$updated', '$rewritten', '$initialization', '$s', '$prepend_to_body', '$attr_reader', '$split!', '$+', '$each', '$children', '$==', '$type', '$new_mlhs_tmp', '$process', '$<<', '$length', '$[]', '$empty?']);
+  Opal.add_stubs('require,new,updated,rewritten,initialization,s,prepend_to_body,attr_reader,split!,+,each,children,==,type,new_mlhs_tmp,process,<<,length,[],empty?');
   
   self.$require("opal/rewriters/base");
   return (function($base, $parent_nesting) {
@@ -30532,127 +27204,112 @@ Opal.modules["opal/rewriters/mlhs_args"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Rewriters');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'MlhsArgs');
 
-        var $nesting = [self].concat($parent_nesting), $MlhsArgs_on_def$1, $MlhsArgs_on_defs$2, $MlhsArgs_on_iter$3;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
         
         
-        Opal.def(self, '$on_def', $MlhsArgs_on_def$1 = function $$on_def(node) {
-          var $a, $iter = $MlhsArgs_on_def$1.$$p, $yield = $iter || nil, self = this, mid = nil, args = nil, body = nil, arguments$ = nil, $ret_or_1 = nil;
+        $def(self, '$on_def', function $$on_def(node) {
+          var $a, $yield = $$on_def.$$p || nil, self = this, mid = nil, args = nil, body = nil, arguments$ = nil, $ret_or_1 = nil;
 
-          if ($iter) $MlhsArgs_on_def$1.$$p = null;
+          delete $$on_def.$$p;
           
-          node = $send2(self, $find_super(self, 'on_def', $MlhsArgs_on_def$1, false, true), 'on_def', [node], null);
-          $a = [].concat(Opal.to_a(node)), (mid = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), $a;
-          arguments$ = $$($nesting, 'Arguments').$new(args);
+          node = $send2(self, $find_super(self, 'on_def', $$on_def, false, true), 'on_def', [node], null);
+          $a = [].concat($to_a(node)), (mid = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), $a;
+          arguments$ = $$('Arguments').$new(args);
           args = args.$updated(nil, arguments$.$rewritten());
           if ($truthy(arguments$.$initialization())) {
             
-            body = (function() {if ($truthy(($ret_or_1 = body))) {
-              return $ret_or_1
-            } else {
-              return self.$s("nil")
-            }; return nil; })();
-            body = self.$prepend_to_body(body, arguments$.$initialization());};
+            body = ($truthy(($ret_or_1 = body)) ? ($ret_or_1) : (self.$s("nil")));
+            body = self.$prepend_to_body(body, arguments$.$initialization());
+          };
           return node.$updated(nil, [mid, args, body]);
-        }, $MlhsArgs_on_def$1.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$on_defs', $MlhsArgs_on_defs$2 = function $$on_defs(node) {
-          var $a, $iter = $MlhsArgs_on_defs$2.$$p, $yield = $iter || nil, self = this, recv = nil, mid = nil, args = nil, body = nil, arguments$ = nil, $ret_or_2 = nil;
+        $def(self, '$on_defs', function $$on_defs(node) {
+          var $a, $yield = $$on_defs.$$p || nil, self = this, recv = nil, mid = nil, args = nil, body = nil, arguments$ = nil, $ret_or_1 = nil;
 
-          if ($iter) $MlhsArgs_on_defs$2.$$p = null;
+          delete $$on_defs.$$p;
           
-          node = $send2(self, $find_super(self, 'on_defs', $MlhsArgs_on_defs$2, false, true), 'on_defs', [node], null);
-          $a = [].concat(Opal.to_a(node)), (recv = ($a[0] == null ? nil : $a[0])), (mid = ($a[1] == null ? nil : $a[1])), (args = ($a[2] == null ? nil : $a[2])), (body = ($a[3] == null ? nil : $a[3])), $a;
-          arguments$ = $$($nesting, 'Arguments').$new(args);
+          node = $send2(self, $find_super(self, 'on_defs', $$on_defs, false, true), 'on_defs', [node], null);
+          $a = [].concat($to_a(node)), (recv = ($a[0] == null ? nil : $a[0])), (mid = ($a[1] == null ? nil : $a[1])), (args = ($a[2] == null ? nil : $a[2])), (body = ($a[3] == null ? nil : $a[3])), $a;
+          arguments$ = $$('Arguments').$new(args);
           args = args.$updated(nil, arguments$.$rewritten());
           if ($truthy(arguments$.$initialization())) {
             
-            body = (function() {if ($truthy(($ret_or_2 = body))) {
-              return $ret_or_2
-            } else {
-              return self.$s("nil")
-            }; return nil; })();
-            body = self.$prepend_to_body(body, arguments$.$initialization());};
+            body = ($truthy(($ret_or_1 = body)) ? ($ret_or_1) : (self.$s("nil")));
+            body = self.$prepend_to_body(body, arguments$.$initialization());
+          };
           return node.$updated(nil, [recv, mid, args, body]);
-        }, $MlhsArgs_on_defs$2.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$on_iter', $MlhsArgs_on_iter$3 = function $$on_iter(node) {
-          var $a, $iter = $MlhsArgs_on_iter$3.$$p, $yield = $iter || nil, self = this, args = nil, body = nil, arguments$ = nil, $ret_or_3 = nil;
+        $def(self, '$on_iter', function $$on_iter(node) {
+          var $a, $yield = $$on_iter.$$p || nil, self = this, args = nil, body = nil, arguments$ = nil, $ret_or_1 = nil;
 
-          if ($iter) $MlhsArgs_on_iter$3.$$p = null;
+          delete $$on_iter.$$p;
           
-          node = $send2(self, $find_super(self, 'on_iter', $MlhsArgs_on_iter$3, false, true), 'on_iter', [node], null);
-          $a = [].concat(Opal.to_a(node)), (args = ($a[0] == null ? nil : $a[0])), (body = ($a[1] == null ? nil : $a[1])), $a;
-          arguments$ = $$($nesting, 'Arguments').$new(args);
+          node = $send2(self, $find_super(self, 'on_iter', $$on_iter, false, true), 'on_iter', [node], null);
+          $a = [].concat($to_a(node)), (args = ($a[0] == null ? nil : $a[0])), (body = ($a[1] == null ? nil : $a[1])), $a;
+          arguments$ = $$('Arguments').$new(args);
           args = args.$updated(nil, arguments$.$rewritten());
           if ($truthy(arguments$.$initialization())) {
             
-            body = (function() {if ($truthy(($ret_or_3 = body))) {
-              return $ret_or_3
-            } else {
-              return self.$s("nil")
-            }; return nil; })();
-            body = self.$prepend_to_body(body, arguments$.$initialization());};
+            body = ($truthy(($ret_or_1 = body)) ? ($ret_or_1) : (self.$s("nil")));
+            body = self.$prepend_to_body(body, arguments$.$initialization());
+          };
           return node.$updated(nil, [args, body]);
-        }, $MlhsArgs_on_iter$3.$$arity = 1);
+        }, 1);
         (function($base, $super, $parent_nesting) {
           var self = $klass($base, $super, 'Arguments');
 
-          var $nesting = [self].concat($parent_nesting), $Arguments_initialize$4, $Arguments_reset_tmp_counter$excl$5, $Arguments_new_mlhs_tmp$6, $Arguments_split$excl$7;
+          var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-          self.$$prototype.counter = self.$$prototype.args = self.$$prototype.initialization = nil;
+          $proto.counter = $proto.args = $proto.initialization = nil;
           
           self.$attr_reader("rewritten", "initialization");
           
-          Opal.def(self, '$initialize', $Arguments_initialize$4 = function $$initialize(args) {
+          $def(self, '$initialize', function $$initialize(args) {
             var self = this;
 
             
             self.args = args;
             self.rewritten = [];
             self.initialization = [];
-            self.rewriter = $$($nesting, 'MlhsRewriter').$new();
+            self.rewriter = $$('MlhsRewriter').$new();
             return self['$split!']();
-          }, $Arguments_initialize$4.$$arity = 1);
+          }, 1);
           
-          Opal.def(self, '$reset_tmp_counter!', $Arguments_reset_tmp_counter$excl$5 = function() {
+          $def(self, '$reset_tmp_counter!', function $Arguments_reset_tmp_counter$excl$1() {
             var self = this;
 
             return (self.counter = 0)
-          }, $Arguments_reset_tmp_counter$excl$5.$$arity = 0);
+          }, 0);
           
-          Opal.def(self, '$new_mlhs_tmp', $Arguments_new_mlhs_tmp$6 = function $$new_mlhs_tmp() {
-            var self = this, $ret_or_4 = nil;
+          $def(self, '$new_mlhs_tmp', function $$new_mlhs_tmp() {
+            var self = this, $ret_or_1 = nil;
 
             
-            self.counter = (function() {if ($truthy(($ret_or_4 = self.counter))) {
-              return $ret_or_4
-            } else {
-              return 0
-            }; return nil; })();
+            self.counter = ($truthy(($ret_or_1 = self.counter)) ? ($ret_or_1) : (0));
             self.counter = $rb_plus(self.counter, 1);
-            return "" + "$mlhs_tmp" + (self.counter);
-          }, $Arguments_new_mlhs_tmp$6.$$arity = 0);
-          return (Opal.def(self, '$split!', $Arguments_split$excl$7 = function() {
-            var $$8, self = this;
+            return "$mlhs_tmp" + (self.counter);
+          }, 0);
+          return $def(self, '$split!', function $Arguments_split$excl$2() {
+            var self = this;
 
             
-            $send(self.args.$children(), 'each', [], ($$8 = function(arg){var self = $$8.$$s == null ? this : $$8.$$s, var_name = nil, rhs = nil, mlhs = nil;
+            $send(self.args.$children(), 'each', [], function $$3(arg){var self = $$3.$$s == null ? this : $$3.$$s, var_name = nil, rhs = nil, mlhs = nil;
               if (self.rewriter == null) self.rewriter = nil;
               if (self.initialization == null) self.initialization = nil;
               if (self.rewritten == null) self.rewritten = nil;
 
               
               
-              if (arg == null) {
-                arg = nil;
-              };
-              if (arg.$type()['$==']("mlhs")) {
+              if (arg == null) arg = nil;;
+              if ($eqeq(arg.$type(), "mlhs")) {
                 
                 var_name = self.$new_mlhs_tmp();
                 rhs = self.$s("lvar", var_name);
@@ -30661,29 +27318,27 @@ Opal.modules["opal/rewriters/mlhs_args"] = function(Opal) {
                 return self.rewritten['$<<'](self.$s("arg", var_name).$updated(nil, nil, $hash2(["meta"], {"meta": $hash2(["arg_name"], {"arg_name": var_name})})));
               } else {
                 return self.rewritten['$<<'](arg)
-              };}, $$8.$$s = self, $$8.$$arity = 1, $$8));
-            if (self.initialization.$length()['$=='](1)) {
+              };}, {$$arity: 1, $$s: self});
+            if ($eqeq(self.initialization.$length(), 1)) {
               return (self.initialization = self.initialization['$[]'](0))
             } else if ($truthy(self.initialization['$empty?']())) {
               return (self.initialization = nil)
             } else {
-              return (self.initialization = $send(self, 's', ["begin"].concat(Opal.to_a(self.initialization))))
+              return (self.initialization = $send(self, 's', ["begin"].concat($to_a(self.initialization))))
             };
-          }, $Arguments_split$excl$7.$$arity = 0), nil) && 'split!';
-        })($nesting[0], $$($nesting, 'Base'), $nesting);
-        return (function($base, $super, $parent_nesting) {
+          }, 0);
+        })($nesting[0], $$('Base'), $nesting);
+        return (function($base, $super) {
           var self = $klass($base, $super, 'MlhsRewriter');
 
-          var $nesting = [self].concat($parent_nesting), $MlhsRewriter_on_arg$9, $MlhsRewriter_on_restarg$10;
-
           
           
-          Opal.def(self, '$on_arg', $MlhsRewriter_on_arg$9 = function $$on_arg(node) {
-            var self = this;
-
+          
+          $def(self, '$on_arg', function $$on_arg(node) {
+            
             return node.$updated("lvasgn")
-          }, $MlhsRewriter_on_arg$9.$$arity = 1);
-          return (Opal.def(self, '$on_restarg', $MlhsRewriter_on_restarg$10 = function $$on_restarg(node) {
+          }, 1);
+          return $def(self, '$on_restarg', function $$on_restarg(node) {
             var self = this, name = nil;
 
             
@@ -30693,18 +27348,17 @@ Opal.modules["opal/rewriters/mlhs_args"] = function(Opal) {
             } else {
               return self.$s("splat")
             };
-          }, $MlhsRewriter_on_restarg$10.$$arity = 1), nil) && 'on_restarg';
-        })($nesting[0], $$($nesting, 'Base'), $nesting);
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+          }, 1);
+        })($nesting[0], $$('Base'));
+      })($nesting[0], $$('Base'), $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/rewriters/arguments"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy;
+Opal.modules["opal/rewriters/arguments"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $eqeqeq = Opal.eqeqeq, $truthy = Opal.truthy, $def = Opal.def;
 
-  Opal.add_stubs(['$attr_reader', '$each', '$type', '$===', '$<<', '$any?', '$raise', '$!', '$nil?', '$has_any_kwargs?', '$can_inline_kwargs?', '$empty?']);
+  Opal.add_stubs('attr_reader,each,===,type,<<,any?,raise,!,nil?,has_any_kwargs?,can_inline_kwargs?,empty?');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Opal');
 
@@ -30715,17 +27369,17 @@ Opal.modules["opal/rewriters/arguments"] = function(Opal) {
 
       var $nesting = [self].concat($parent_nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'Arguments');
 
-        var $nesting = [self].concat($parent_nesting), $Arguments_initialize$1, $Arguments_has_post_args$ques$3, $Arguments_has_any_kwargs$ques$4, $Arguments_can_inline_kwargs$ques$5;
+        var $proto = self.$$prototype;
 
-        self.$$prototype.restarg = self.$$prototype.postargs = self.$$prototype.kwargs = self.$$prototype.kwoptargs = self.$$prototype.kwrestarg = self.$$prototype.optargs = nil;
+        $proto.restarg = $proto.postargs = $proto.kwargs = $proto.kwoptargs = $proto.kwrestarg = $proto.optargs = nil;
         
         self.$attr_reader("args", "optargs", "restarg", "postargs", "kwargs", "kwoptargs", "kwrestarg", "kwnilarg", "shadowargs", "blockarg");
         
-        Opal.def(self, '$initialize', $Arguments_initialize$1 = function $$initialize(args) {
-          var $$2, self = this;
+        $def(self, '$initialize', function $$initialize(args) {
+          var self = this;
 
           
           self.args = [];
@@ -30738,9 +27392,9 @@ Opal.modules["opal/rewriters/arguments"] = function(Opal) {
           self.kwnilarg = false;
           self.shadowargs = [];
           self.blockarg = nil;
-          return $send(args, 'each', [], ($$2 = function(arg){var self = $$2.$$s == null ? this : $$2.$$s, $case = nil, $ret_or_1 = nil;
-            if (self.restarg == null) self.restarg = nil;
+          return $send(args, 'each', [], function $$1(arg){var self = $$1.$$s == null ? this : $$1.$$s, $ret_or_1 = nil;
             if (self.optargs == null) self.optargs = nil;
+            if (self.restarg == null) self.restarg = nil;
             if (self.postargs == null) self.postargs = nil;
             if (self.args == null) self.args = nil;
             if (self.kwargs == null) self.kwargs = nil;
@@ -30749,85 +27403,72 @@ Opal.modules["opal/rewriters/arguments"] = function(Opal) {
 
             
             
-            if (arg == null) {
-              arg = nil;
-            };
-            return (function() {$case = arg.$type();
-            if ("arg"['$===']($case) || "mlhs"['$===']($case)) {return (function() {if ($truthy((function() {if ($truthy(($ret_or_1 = self.restarg))) {
-              return $ret_or_1
-            } else {
-              return self.optargs['$any?']()
-            }; return nil; })())) {
-              return self.postargs
-            } else {
-              return self.args
-            }; return nil; })()['$<<'](arg)}
-            else if ("optarg"['$===']($case)) {return self.optargs['$<<'](arg)}
-            else if ("restarg"['$===']($case)) {return (self.restarg = arg)}
-            else if ("kwarg"['$===']($case)) {return self.kwargs['$<<'](arg)}
-            else if ("kwoptarg"['$===']($case)) {return self.kwoptargs['$<<'](arg)}
-            else if ("kwnilarg"['$===']($case)) {return (self.kwnilarg = true)}
-            else if ("kwrestarg"['$===']($case)) {return (self.kwrestarg = arg)}
-            else if ("shadowarg"['$===']($case)) {return self.shadowargs['$<<'](arg)}
-            else if ("blockarg"['$===']($case)) {return (self.blockarg = arg)}
-            else {return self.$raise("" + "Unsupported arg type " + (arg.$type()))}})();}, $$2.$$s = self, $$2.$$arity = 1, $$2));
-        }, $Arguments_initialize$1.$$arity = 1);
-        
-        Opal.def(self, '$has_post_args?', $Arguments_has_post_args$ques$3 = function() {
-          var self = this, $ret_or_2 = nil, $ret_or_3 = nil, $ret_or_4 = nil;
-
-          if ($truthy(($ret_or_2 = (function() {if ($truthy(($ret_or_3 = self.restarg['$nil?']()['$!']()))) {
-            return $ret_or_3
-          } else {
-            return self.postargs['$any?']()
-          }; return nil; })()))) {
-            return $ret_or_2
+            if (arg == null) arg = nil;;
+            if (($eqeqeq("arg", ($ret_or_1 = arg.$type())) || ($eqeqeq("mlhs", $ret_or_1)))) {
+              return (($truthy(self.restarg) || ($truthy(self.optargs['$any?']()))) ? (self.postargs) : (self.args))['$<<'](arg)
+            } else if ($eqeqeq("optarg", $ret_or_1)) {
+              return self.optargs['$<<'](arg)
+            } else if ($eqeqeq("restarg", $ret_or_1)) {
+              return (self.restarg = arg)
+            } else if ($eqeqeq("kwarg", $ret_or_1)) {
+              return self.kwargs['$<<'](arg)
+            } else if ($eqeqeq("kwoptarg", $ret_or_1)) {
+              return self.kwoptargs['$<<'](arg)
+            } else if ($eqeqeq("kwnilarg", $ret_or_1)) {
+              return (self.kwnilarg = true)
+            } else if ($eqeqeq("kwrestarg", $ret_or_1)) {
+              return (self.kwrestarg = arg)
+            } else if ($eqeqeq("shadowarg", $ret_or_1)) {
+              return self.shadowargs['$<<'](arg)
+            } else if ($eqeqeq("blockarg", $ret_or_1)) {
+              return (self.blockarg = arg)
+            } else {
+              return self.$raise("Unsupported arg type " + (arg.$type()))
+            };}, {$$arity: 1, $$s: self});
+        }, 1);
+        
+        $def(self, '$has_post_args?', function $Arguments_has_post_args$ques$2() {
+          var self = this, $ret_or_1 = nil, $ret_or_2 = nil;
+
+          if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = self.restarg['$nil?']()['$!']())) ? ($ret_or_2) : (self.postargs['$any?']()))))) {
+            return $ret_or_1
           } else {
             
-            if ($truthy(($ret_or_4 = self['$has_any_kwargs?']()))) {
+            if ($truthy(($ret_or_2 = self['$has_any_kwargs?']()))) {
               return self['$can_inline_kwargs?']()['$!']()
             } else {
-              return $ret_or_4
+              return $ret_or_2
             };
           }
-        }, $Arguments_has_post_args$ques$3.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$has_any_kwargs?', $Arguments_has_any_kwargs$ques$4 = function() {
-          var self = this, $ret_or_5 = nil, $ret_or_6 = nil;
+        $def(self, '$has_any_kwargs?', function $Arguments_has_any_kwargs$ques$3() {
+          var self = this, $ret_or_1 = nil, $ret_or_2 = nil;
 
-          if ($truthy(($ret_or_5 = (function() {if ($truthy(($ret_or_6 = self.kwargs['$any?']()))) {
-            return $ret_or_6
-          } else {
-            return self.kwoptargs['$any?']()
-          }; return nil; })()))) {
-            return $ret_or_5
+          if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = self.kwargs['$any?']())) ? ($ret_or_2) : (self.kwoptargs['$any?']()))))) {
+            return $ret_or_1
           } else {
             return self.kwrestarg['$nil?']()['$!']()
           }
-        }, $Arguments_has_any_kwargs$ques$4.$$arity = 0);
-        return (Opal.def(self, '$can_inline_kwargs?', $Arguments_can_inline_kwargs$ques$5 = function() {
-          var self = this, $ret_or_7 = nil, $ret_or_8 = nil;
+        }, 0);
+        return $def(self, '$can_inline_kwargs?', function $Arguments_can_inline_kwargs$ques$4() {
+          var self = this, $ret_or_1 = nil, $ret_or_2 = nil;
 
-          if ($truthy(($ret_or_7 = (function() {if ($truthy(($ret_or_8 = self.optargs['$empty?']()))) {
-            return self.restarg['$nil?']()
-          } else {
-            return $ret_or_8
-          }; return nil; })()))) {
+          if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = self.optargs['$empty?']())) ? (self.restarg['$nil?']()) : ($ret_or_2))))) {
             return self.postargs['$empty?']()
           } else {
-            return $ret_or_7
+            return $ret_or_1
           }
-        }, $Arguments_can_inline_kwargs$ques$5.$$arity = 0), nil) && 'can_inline_kwargs?';
-      })($nesting[0], null, $nesting)
+        }, 0);
+      })($nesting[0], null)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/rewriters/inline_args"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $truthy = Opal.truthy, $hash2 = Opal.hash2, $send = Opal.send;
+Opal.modules["opal/rewriters/inline_args"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $to_a = Opal.to_a, $truthy = Opal.truthy, $hash2 = Opal.hash2, $def = Opal.def, $const_set = Opal.const_set, $send = Opal.send, $eqeq = Opal.eqeq, $Opal = Opal.Opal;
 
-  Opal.add_stubs(['$require', '$s', '$new', '$updated', '$inline', '$prepend_to_body', '$initialization', '$attr_reader', '$freeze', '$children', '$each', '$send', '$any?', '$blockarg', '$<<', '$shadowargs', '$args', '$==', '$[]', '$has_post_args?', '$length', '$has_any_kwargs?', '$can_inline_kwargs?', '$kwargs', '$kwoptargs', '$kwrestarg', '$postargs', '$optargs', '$args_to_keep', '$restarg']);
+  Opal.add_stubs('require,s,new,updated,inline,prepend_to_body,initialization,attr_reader,freeze,children,each,send,any?,blockarg,<<,shadowargs,args,==,[],has_post_args?,length,has_any_kwargs?,can_inline_kwargs?,kwargs,kwoptargs,kwrestarg,postargs,optargs,args_to_keep,restarg');
   
   self.$require("opal/rewriters/base");
   self.$require("opal/rewriters/arguments");
@@ -30839,80 +27480,68 @@ Opal.modules["opal/rewriters/inline_args"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Rewriters');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'InlineArgs');
 
-        var $nesting = [self].concat($parent_nesting), $InlineArgs_on_def$1, $InlineArgs_on_defs$2, $InlineArgs_on_iter$3;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
         
         
-        Opal.def(self, '$on_def', $InlineArgs_on_def$1 = function $$on_def(node) {
-          var $a, $iter = $InlineArgs_on_def$1.$$p, $yield = $iter || nil, self = this, mid = nil, args = nil, body = nil, $ret_or_1 = nil, initializer = nil, inline_args = nil;
+        $def(self, '$on_def', function $$on_def(node) {
+          var $a, $yield = $$on_def.$$p || nil, self = this, mid = nil, args = nil, body = nil, $ret_or_1 = nil, initializer = nil, inline_args = nil;
 
-          if ($iter) $InlineArgs_on_def$1.$$p = null;
+          delete $$on_def.$$p;
           
-          node = $send2(self, $find_super(self, 'on_def', $InlineArgs_on_def$1, false, true), 'on_def', [node], null);
-          $a = [].concat(Opal.to_a(node)), (mid = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), $a;
-          body = (function() {if ($truthy(($ret_or_1 = body))) {
-            return $ret_or_1
-          } else {
-            return self.$s("nil")
-          }; return nil; })();
-          initializer = $$($nesting, 'Initializer').$new(args, $hash2(["type"], {"type": "def"}));
+          node = $send2(self, $find_super(self, 'on_def', $$on_def, false, true), 'on_def', [node], null);
+          $a = [].concat($to_a(node)), (mid = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), $a;
+          body = ($truthy(($ret_or_1 = body)) ? ($ret_or_1) : (self.$s("nil")));
+          initializer = $$('Initializer').$new(args, $hash2(["type"], {"type": "def"}));
           inline_args = args.$updated(nil, initializer.$inline());
           body = self.$prepend_to_body(body, initializer.$initialization());
           return node.$updated(nil, [mid, inline_args, body]);
-        }, $InlineArgs_on_def$1.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$on_defs', $InlineArgs_on_defs$2 = function $$on_defs(node) {
-          var $a, $iter = $InlineArgs_on_defs$2.$$p, $yield = $iter || nil, self = this, recv = nil, mid = nil, args = nil, body = nil, $ret_or_2 = nil, initializer = nil, inline_args = nil;
+        $def(self, '$on_defs', function $$on_defs(node) {
+          var $a, $yield = $$on_defs.$$p || nil, self = this, recv = nil, mid = nil, args = nil, body = nil, $ret_or_1 = nil, initializer = nil, inline_args = nil;
 
-          if ($iter) $InlineArgs_on_defs$2.$$p = null;
+          delete $$on_defs.$$p;
           
-          node = $send2(self, $find_super(self, 'on_defs', $InlineArgs_on_defs$2, false, true), 'on_defs', [node], null);
-          $a = [].concat(Opal.to_a(node)), (recv = ($a[0] == null ? nil : $a[0])), (mid = ($a[1] == null ? nil : $a[1])), (args = ($a[2] == null ? nil : $a[2])), (body = ($a[3] == null ? nil : $a[3])), $a;
-          body = (function() {if ($truthy(($ret_or_2 = body))) {
-            return $ret_or_2
-          } else {
-            return self.$s("nil")
-          }; return nil; })();
-          initializer = $$($nesting, 'Initializer').$new(args, $hash2(["type"], {"type": "defs"}));
+          node = $send2(self, $find_super(self, 'on_defs', $$on_defs, false, true), 'on_defs', [node], null);
+          $a = [].concat($to_a(node)), (recv = ($a[0] == null ? nil : $a[0])), (mid = ($a[1] == null ? nil : $a[1])), (args = ($a[2] == null ? nil : $a[2])), (body = ($a[3] == null ? nil : $a[3])), $a;
+          body = ($truthy(($ret_or_1 = body)) ? ($ret_or_1) : (self.$s("nil")));
+          initializer = $$('Initializer').$new(args, $hash2(["type"], {"type": "defs"}));
           inline_args = args.$updated(nil, initializer.$inline());
           body = self.$prepend_to_body(body, initializer.$initialization());
           return node.$updated(nil, [recv, mid, inline_args, body]);
-        }, $InlineArgs_on_defs$2.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$on_iter', $InlineArgs_on_iter$3 = function $$on_iter(node) {
-          var $a, $iter = $InlineArgs_on_iter$3.$$p, $yield = $iter || nil, self = this, args = nil, body = nil, $ret_or_3 = nil, initializer = nil, inline_args = nil;
+        $def(self, '$on_iter', function $$on_iter(node) {
+          var $a, $yield = $$on_iter.$$p || nil, self = this, args = nil, body = nil, $ret_or_1 = nil, initializer = nil, inline_args = nil;
 
-          if ($iter) $InlineArgs_on_iter$3.$$p = null;
+          delete $$on_iter.$$p;
           
-          node = $send2(self, $find_super(self, 'on_iter', $InlineArgs_on_iter$3, false, true), 'on_iter', [node], null);
-          $a = [].concat(Opal.to_a(node)), (args = ($a[0] == null ? nil : $a[0])), (body = ($a[1] == null ? nil : $a[1])), $a;
-          body = (function() {if ($truthy(($ret_or_3 = body))) {
-            return $ret_or_3
-          } else {
-            return self.$s("nil")
-          }; return nil; })();
-          initializer = $$($nesting, 'Initializer').$new(args, $hash2(["type"], {"type": "iter"}));
+          node = $send2(self, $find_super(self, 'on_iter', $$on_iter, false, true), 'on_iter', [node], null);
+          $a = [].concat($to_a(node)), (args = ($a[0] == null ? nil : $a[0])), (body = ($a[1] == null ? nil : $a[1])), $a;
+          body = ($truthy(($ret_or_1 = body)) ? ($ret_or_1) : (self.$s("nil")));
+          initializer = $$('Initializer').$new(args, $hash2(["type"], {"type": "iter"}));
           inline_args = args.$updated(nil, initializer.$inline());
           body = self.$prepend_to_body(body, initializer.$initialization());
           return node.$updated(nil, [inline_args, body]);
-        }, $InlineArgs_on_iter$3.$$arity = 1);
+        }, 1);
         return (function($base, $super, $parent_nesting) {
           var self = $klass($base, $super, 'Initializer');
 
-          var $nesting = [self].concat($parent_nesting), $Initializer_initialize$4, $Initializer_extract_blockarg$6, $Initializer_initialize_shadowargs$7, $Initializer_extract_args$9, $Initializer_prepare_post_args$11, $Initializer_prepare_kwargs$12, $Initializer_extract_kwargs$13, $Initializer_extract_kwoptargs$15, $Initializer_extract_kwrestarg$17, $Initializer_extract_post_args$18, $Initializer_extract_optargs$20, $Initializer_extract_restarg$22, $Initializer_args_to_keep$23;
+          var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-          self.$$prototype.initialization = self.$$prototype.args = self.$$prototype.inline = nil;
+          $proto.initialization = $proto.args = $proto.inline = nil;
           
           self.$attr_reader("inline", "initialization");
-          Opal.const_set($nesting[0], 'STEPS', ["extract_blockarg", "initialize_shadowargs", "extract_args", "prepare_post_args", "prepare_kwargs", "extract_optargs", "extract_restarg", "extract_post_args", "extract_kwargs", "extract_kwoptargs", "extract_kwrestarg"].$freeze());
+          $const_set($nesting[0], 'STEPS', ["extract_blockarg", "initialize_shadowargs", "extract_args", "prepare_post_args", "prepare_kwargs", "extract_optargs", "extract_restarg", "extract_post_args", "extract_kwargs", "extract_kwoptargs", "extract_kwrestarg"].$freeze());
           
-          Opal.def(self, '$initialize', $Initializer_initialize$4 = function $$initialize(args, $kwargs) {
-            var type, $$5, self = this;
+          $def(self, '$initialize', function $$initialize(args, $kwargs) {
+            var type, self = this;
 
             
             
@@ -30926,27 +27555,25 @@ Opal.modules["opal/rewriters/inline_args"] = function(Opal) {
               throw Opal.ArgumentError.$new('missing keyword: type');
             }
             type = $kwargs.$$smap["type"];;
-            self.args = $$($nesting, 'Arguments').$new(args.$children());
+            self.args = $$('Arguments').$new(args.$children());
             self.inline = [];
             self.initialization = [];
             self.type = type;
             self.underscore_found = false;
-            $send($$($nesting, 'STEPS'), 'each', [], ($$5 = function(step){var self = $$5.$$s == null ? this : $$5.$$s;
+            $send($$('STEPS'), 'each', [], function $$1(step){var self = $$1.$$s == null ? this : $$1.$$s;
 
               
               
-              if (step == null) {
-                step = nil;
-              };
-              return self.$send(step);}, $$5.$$s = self, $$5.$$arity = 1, $$5));
+              if (step == null) step = nil;;
+              return self.$send(step);}, {$$arity: 1, $$s: self});
             if ($truthy(self.initialization['$any?']())) {
-              return (self.initialization = $send(self, 's', ["begin"].concat(Opal.to_a(self.initialization))))
+              return (self.initialization = $send(self, 's', ["begin"].concat($to_a(self.initialization))))
             } else {
               return (self.initialization = nil)
             };
-          }, $Initializer_initialize$4.$$arity = 2);
+          }, 2);
           
-          Opal.def(self, '$extract_blockarg', $Initializer_extract_blockarg$6 = function $$extract_blockarg() {
+          $def(self, '$extract_blockarg', function $$extract_blockarg() {
             var self = this, arg = nil;
 
             if ($truthy((arg = self.args.$blockarg()))) {
@@ -30954,26 +27581,24 @@ Opal.modules["opal/rewriters/inline_args"] = function(Opal) {
             } else {
               return nil
             }
-          }, $Initializer_extract_blockarg$6.$$arity = 0);
+          }, 0);
           
-          Opal.def(self, '$initialize_shadowargs', $Initializer_initialize_shadowargs$7 = function $$initialize_shadowargs() {
-            var $$8, self = this;
+          $def(self, '$initialize_shadowargs', function $$initialize_shadowargs() {
+            var self = this;
 
-            return $send(self.args.$shadowargs(), 'each', [], ($$8 = function(arg){var self = $$8.$$s == null ? this : $$8.$$s;
+            return $send(self.args.$shadowargs(), 'each', [], function $$2(arg){var self = $$2.$$s == null ? this : $$2.$$s;
               if (self.initialization == null) self.initialization = nil;
 
               
               
-              if (arg == null) {
-                arg = nil;
-              };
-              return self.initialization['$<<'](arg.$updated("initialize_shadowarg"));}, $$8.$$s = self, $$8.$$arity = 1, $$8))
-          }, $Initializer_initialize_shadowargs$7.$$arity = 0);
+              if (arg == null) arg = nil;;
+              return self.initialization['$<<'](arg.$updated("initialize_shadowarg"));}, {$$arity: 1, $$s: self})
+          }, 0);
           
-          Opal.def(self, '$extract_args', $Initializer_extract_args$9 = function $$extract_args() {
-            var $$10, self = this;
+          $def(self, '$extract_args', function $$extract_args() {
+            var self = this;
 
-            return $send(self.args.$args(), 'each', [], ($$10 = function(arg){var self = $$10.$$s == null ? this : $$10.$$s;
+            return $send(self.args.$args(), 'each', [], function $$3(arg){var self = $$3.$$s == null ? this : $$3.$$s;
               if (self.type == null) self.type = nil;
               if (self.initialization == null) self.initialization = nil;
               if (self.underscore_found == null) self.underscore_found = nil;
@@ -30981,21 +27606,22 @@ Opal.modules["opal/rewriters/inline_args"] = function(Opal) {
 
               
               
-              if (arg == null) {
-                arg = nil;
-              };
-              if (self.type['$==']("iter")) {
+              if (arg == null) arg = nil;;
+              if ($eqeq(self.type, "iter")) {
                 
                 self.initialization['$<<'](arg.$updated("initialize_iter_arg"));
-                if (arg.$children()['$[]'](0)['$==']("_")) {
+                if ($eqeq(arg.$children()['$[]'](0), "_")) {
                   
                   if ($truthy(self.underscore_found)) {
-                    arg = self.$s("fake_arg")};
-                  self.underscore_found = true;};};
-              return self.inline['$<<'](arg);}, $$10.$$s = self, $$10.$$arity = 1, $$10))
-          }, $Initializer_extract_args$9.$$arity = 0);
+                    arg = self.$s("fake_arg")
+                  };
+                  self.underscore_found = true;
+                };
+              };
+              return self.inline['$<<'](arg);}, {$$arity: 1, $$s: self})
+          }, 0);
           
-          Opal.def(self, '$prepare_post_args', $Initializer_prepare_post_args$11 = function $$prepare_post_args() {
+          $def(self, '$prepare_post_args', function $$prepare_post_args() {
             var self = this;
 
             if ($truthy(self.args['$has_post_args?']())) {
@@ -31003,14 +27629,13 @@ Opal.modules["opal/rewriters/inline_args"] = function(Opal) {
             } else {
               return nil
             }
-          }, $Initializer_prepare_post_args$11.$$arity = 0);
+          }, 0);
           
-          Opal.def(self, '$prepare_kwargs', $Initializer_prepare_kwargs$12 = function $$prepare_kwargs() {
+          $def(self, '$prepare_kwargs', function $$prepare_kwargs() {
             var self = this;
 
             
-            if ($truthy(self.args['$has_any_kwargs?']())) {
-            } else {
+            if (!$truthy(self.args['$has_any_kwargs?']())) {
               return nil
             };
             if ($truthy(self.args['$can_inline_kwargs?']())) {
@@ -31021,37 +27646,33 @@ Opal.modules["opal/rewriters/inline_args"] = function(Opal) {
               self.inline['$<<'](self.$s("fake_arg"));
             };
             return self.initialization['$<<'](self.$s("ensure_kwargs_are_kwargs"));
-          }, $Initializer_prepare_kwargs$12.$$arity = 0);
+          }, 0);
           
-          Opal.def(self, '$extract_kwargs', $Initializer_extract_kwargs$13 = function $$extract_kwargs() {
-            var $$14, self = this;
+          $def(self, '$extract_kwargs', function $$extract_kwargs() {
+            var self = this;
 
-            return $send(self.args.$kwargs(), 'each', [], ($$14 = function(arg){var self = $$14.$$s == null ? this : $$14.$$s;
+            return $send(self.args.$kwargs(), 'each', [], function $$4(arg){var self = $$4.$$s == null ? this : $$4.$$s;
               if (self.initialization == null) self.initialization = nil;
 
               
               
-              if (arg == null) {
-                arg = nil;
-              };
-              return self.initialization['$<<'](arg.$updated("extract_kwarg"));}, $$14.$$s = self, $$14.$$arity = 1, $$14))
-          }, $Initializer_extract_kwargs$13.$$arity = 0);
+              if (arg == null) arg = nil;;
+              return self.initialization['$<<'](arg.$updated("extract_kwarg"));}, {$$arity: 1, $$s: self})
+          }, 0);
           
-          Opal.def(self, '$extract_kwoptargs', $Initializer_extract_kwoptargs$15 = function $$extract_kwoptargs() {
-            var $$16, self = this;
+          $def(self, '$extract_kwoptargs', function $$extract_kwoptargs() {
+            var self = this;
 
-            return $send(self.args.$kwoptargs(), 'each', [], ($$16 = function(arg){var self = $$16.$$s == null ? this : $$16.$$s;
+            return $send(self.args.$kwoptargs(), 'each', [], function $$5(arg){var self = $$5.$$s == null ? this : $$5.$$s;
               if (self.initialization == null) self.initialization = nil;
 
               
               
-              if (arg == null) {
-                arg = nil;
-              };
-              return self.initialization['$<<'](arg.$updated("extract_kwoptarg"));}, $$16.$$s = self, $$16.$$arity = 1, $$16))
-          }, $Initializer_extract_kwoptargs$15.$$arity = 0);
+              if (arg == null) arg = nil;;
+              return self.initialization['$<<'](arg.$updated("extract_kwoptarg"));}, {$$arity: 1, $$s: self})
+          }, 0);
           
-          Opal.def(self, '$extract_kwrestarg', $Initializer_extract_kwrestarg$17 = function $$extract_kwrestarg() {
+          $def(self, '$extract_kwrestarg', function $$extract_kwrestarg() {
             var self = this, arg = nil;
 
             if ($truthy((arg = self.args.$kwrestarg()))) {
@@ -31059,51 +27680,47 @@ Opal.modules["opal/rewriters/inline_args"] = function(Opal) {
             } else {
               return nil
             }
-          }, $Initializer_extract_kwrestarg$17.$$arity = 0);
+          }, 0);
           
-          Opal.def(self, '$extract_post_args', $Initializer_extract_post_args$18 = function $$extract_post_args() {
-            var $$19, self = this;
+          $def(self, '$extract_post_args', function $$extract_post_args() {
+            var self = this;
 
-            return $send(self.args.$postargs(), 'each', [], ($$19 = function(arg){var self = $$19.$$s == null ? this : $$19.$$s;
+            return $send(self.args.$postargs(), 'each', [], function $$6(arg){var self = $$6.$$s == null ? this : $$6.$$s;
               if (self.initialization == null) self.initialization = nil;
               if (self.inline == null) self.inline = nil;
 
               
               
-              if (arg == null) {
-                arg = nil;
-              };
+              if (arg == null) arg = nil;;
               self.initialization['$<<'](arg.$updated("extract_post_arg"));
-              return self.inline['$<<'](self.$s("fake_arg"));}, $$19.$$s = self, $$19.$$arity = 1, $$19))
-          }, $Initializer_extract_post_args$18.$$arity = 0);
+              return self.inline['$<<'](self.$s("fake_arg"));}, {$$arity: 1, $$s: self})
+          }, 0);
           
-          Opal.def(self, '$extract_optargs', $Initializer_extract_optargs$20 = function $$extract_optargs() {
-            var $$21, self = this, has_post_args = nil;
+          $def(self, '$extract_optargs', function $$extract_optargs() {
+            var self = this, has_post_args = nil;
 
             
             has_post_args = self.args['$has_post_args?']();
-            return $send(self.args.$optargs(), 'each', [], ($$21 = function(arg){var self = $$21.$$s == null ? this : $$21.$$s, $a, arg_name = nil, default_value = nil;
+            return $send(self.args.$optargs(), 'each', [], function $$7(arg){var $a, self = $$7.$$s == null ? this : $$7.$$s, arg_name = nil, default_value = nil;
               if (self.initialization == null) self.initialization = nil;
               if (self.inline == null) self.inline = nil;
 
               
               
-              if (arg == null) {
-                arg = nil;
-              };
+              if (arg == null) arg = nil;;
               if ($truthy(has_post_args)) {
                 
-                $a = [].concat(Opal.to_a(arg)), (arg_name = ($a[0] == null ? nil : $a[0])), (default_value = ($a[1] == null ? nil : $a[1])), $a;
+                $a = [].concat($to_a(arg)), (arg_name = ($a[0] == null ? nil : $a[0])), (default_value = ($a[1] == null ? nil : $a[1])), $a;
                 self.initialization['$<<'](arg.$updated("extract_post_optarg", [arg_name, default_value, self.$args_to_keep()]));
                 return self.inline['$<<'](self.$s("fake_arg"));
               } else {
                 
                 self.inline['$<<'](arg.$updated("arg"));
                 return self.initialization['$<<'](arg.$updated("extract_optarg"));
-              };}, $$21.$$s = self, $$21.$$arity = 1, $$21));
-          }, $Initializer_extract_optargs$20.$$arity = 0);
+              };}, {$$arity: 1, $$s: self});
+          }, 0);
           
-          Opal.def(self, '$extract_restarg', $Initializer_extract_restarg$22 = function $$extract_restarg() {
+          $def(self, '$extract_restarg', function $$extract_restarg() {
             var self = this, arg = nil, arg_name = nil;
 
             if ($truthy((arg = self.args.$restarg()))) {
@@ -31114,23 +27731,22 @@ Opal.modules["opal/rewriters/inline_args"] = function(Opal) {
             } else {
               return nil
             }
-          }, $Initializer_extract_restarg$22.$$arity = 0);
-          return (Opal.def(self, '$args_to_keep', $Initializer_args_to_keep$23 = function $$args_to_keep() {
+          }, 0);
+          return $def(self, '$args_to_keep', function $$args_to_keep() {
             var self = this;
 
             return self.args.$postargs().$length()
-          }, $Initializer_args_to_keep$23.$$arity = 0), nil) && 'args_to_keep';
-        })($nesting[0], $$$($$$($$$('::', 'Opal'), 'Rewriters'), 'Base'), $nesting);
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+          }, 0);
+        })($nesting[0], $$$($$$($Opal, 'Rewriters'), 'Base'), $nesting);
+      })($nesting[0], $$('Base'), $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/rewriters/numblocks"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send;
+Opal.modules["opal/rewriters/numblocks"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $to_ary = Opal.to_ary, $send = Opal.send, $to_a = Opal.to_a, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$children', '$s', '$gen_args', '$map']);
+  Opal.add_stubs('require,children,s,gen_args,map');
   
   self.$require("opal/rewriters/base");
   return (function($base, $parent_nesting) {
@@ -31141,47 +27757,40 @@ Opal.modules["opal/rewriters/numblocks"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Rewriters');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'Numblocks');
 
-        var $nesting = [self].concat($parent_nesting), $Numblocks_on_numblock$1, $Numblocks_gen_args$2;
-
         
         
-        Opal.def(self, '$on_numblock', $Numblocks_on_numblock$1 = function $$on_numblock(node) {
+        
+        $def(self, '$on_numblock', function $$on_numblock(node) {
           var $a, $b, self = this, left = nil, arg_count = nil, right = nil;
 
           
-          $b = node.$children(), $a = Opal.to_ary($b), (left = ($a[0] == null ? nil : $a[0])), (arg_count = ($a[1] == null ? nil : $a[1])), (right = ($a[2] == null ? nil : $a[2])), $b;
-          return self.$s("block", left, $send(self, 's', ["args"].concat(Opal.to_a(self.$gen_args(arg_count)))), right);
-        }, $Numblocks_on_numblock$1.$$arity = 1);
-        return (Opal.def(self, '$gen_args', $Numblocks_gen_args$2 = function $$gen_args(arg_count) {
-          var $$3, self = this;
+          $b = node.$children(), $a = $to_ary($b), (left = ($a[0] == null ? nil : $a[0])), (arg_count = ($a[1] == null ? nil : $a[1])), (right = ($a[2] == null ? nil : $a[2])), $b;
+          return self.$s("block", left, $send(self, 's', ["args"].concat($to_a(self.$gen_args(arg_count)))), right);
+        }, 1);
+        return $def(self, '$gen_args', function $$gen_args(arg_count) {
+          var self = this;
 
-          return $send(Opal.Range.$new(1, arg_count, false), 'map', [], ($$3 = function(i){var self = $$3.$$s == null ? this : $$3.$$s;
+          return $send(Opal.Range.$new(1, arg_count, false), 'map', [], function $$1(i){var self = $$1.$$s == null ? this : $$1.$$s;
 
             
             
-            if (i == null) {
-              i = nil;
-            };
-            return self.$s("arg", "" + "_" + (i));}, $$3.$$s = self, $$3.$$arity = 1, $$3))
-        }, $Numblocks_gen_args$2.$$arity = 1), nil) && 'gen_args';
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+            if (i == null) i = nil;;
+            return self.$s("arg", "_" + (i));}, {$$arity: 1, $$s: self})
+        }, 1);
+      })($nesting[0], $$('Base'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/rewriters/returnable_logic"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy;
+Opal.modules["opal/rewriters/returnable_logic"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $rb_plus = Opal.rb_plus, $def = Opal.def, $rb_minus = Opal.rb_minus, $to_a = Opal.to_a, $send = Opal.send, $send2 = Opal.send2, $find_super = Opal.find_super, $slice = Opal.slice, $eqeq = Opal.eqeq;
 
-  Opal.add_stubs(['$require', '$+', '$children', '$next_tmp', '$updated', '$s', '$process']);
+  Opal.add_stubs('require,+,-,children,[]=,meta,s,next_tmp,build_if_from_when,free_tmp,[],process,updated,==,count,first,delete,private,build_rule_from_parts,empty?,type');
   
   self.$require("opal/rewriters/base");
   return (function($base, $parent_nesting) {
@@ -31192,61 +27801,157 @@ Opal.modules["opal/rewriters/returnable_logic"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Rewriters');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'ReturnableLogic');
 
-        var $nesting = [self].concat($parent_nesting), $ReturnableLogic_next_tmp$1, $ReturnableLogic_reset_tmp_counter$excl$2, $ReturnableLogic_on_or$3, $ReturnableLogic_on_and$4;
+        var $proto = self.$$prototype;
 
-        self.$$prototype.counter = nil;
+        $proto.counter = nil;
         
         
-        Opal.def(self, '$next_tmp', $ReturnableLogic_next_tmp$1 = function $$next_tmp() {
+        $def(self, '$next_tmp', function $$next_tmp() {
           var self = this, $ret_or_1 = nil;
 
           
-          self.counter = (function() {if ($truthy(($ret_or_1 = self.counter))) {
-            return $ret_or_1
-          } else {
-            return 0
-          }; return nil; })();
+          self.counter = ($truthy(($ret_or_1 = self.counter)) ? ($ret_or_1) : (0));
           self.counter = $rb_plus(self.counter, 1);
-          return "" + "$ret_or_" + (self.counter);
-        }, $ReturnableLogic_next_tmp$1.$$arity = 0);
+          return "$ret_or_" + (self.counter);
+        }, 0);
+        
+        $def(self, '$free_tmp', function $$free_tmp() {
+          var self = this;
+
+          return (self.counter = $rb_minus(self.counter, 1))
+        }, 0);
         
-        Opal.def(self, '$reset_tmp_counter!', $ReturnableLogic_reset_tmp_counter$excl$2 = function() {
+        $def(self, '$reset_tmp_counter!', function $ReturnableLogic_reset_tmp_counter$excl$1() {
           var self = this;
 
           return (self.counter = nil)
-        }, $ReturnableLogic_reset_tmp_counter$excl$2.$$arity = 0);
+        }, 0);
+        
+        $def(self, '$on_if', function $$on_if(node) {
+          var $a, $yield = $$on_if.$$p || nil, self = this, test = nil, $writer = nil;
+
+          delete $$on_if.$$p;
+          
+          $a = [].concat($to_a(node.$children())), (test = ($a[0] == null ? nil : $a[0])), $a;
+          if ($truthy(test)) {
+            
+            $writer = ["if_test", true];
+            $send(test.$meta(), '[]=', $to_a($writer));
+            $writer[$rb_minus($writer["length"], 1)];
+          };
+          return $send2(self, $find_super(self, 'on_if', $$on_if, false, true), 'on_if', [node], $yield);
+        }, 1);
+        
+        $def(self, '$on_case', function $$on_case(node) {
+          var $a, $b, self = this, lhs = nil, whens = nil, els = nil, $ret_or_1 = nil, lhs_tmp = nil, out = nil;
+
+          
+          $a = [].concat($to_a(node.$children())), (lhs = ($a[0] == null ? nil : $a[0])), $b = $a.length - 1, $b = ($b < 1) ? 1 : $b, (whens = $slice.call($a, 1, $b)), (els = ($a[$b] == null ? nil : $a[$b])), $a;
+          els = ($truthy(($ret_or_1 = els)) ? ($ret_or_1) : (self.$s("nil")));
+          if ($truthy(lhs)) {
+            lhs_tmp = self.$next_tmp()
+          };
+          out = self.$build_if_from_when(node, lhs, lhs_tmp, whens, els);
+          if ($truthy(lhs)) {
+            self.$free_tmp()
+          };
+          return out;
+        }, 1);
+        
+        $def(self, '$on_or', function $$on_or(node) {
+          var $a, self = this, lhs = nil, rhs = nil, $writer = nil, out = nil, lhs_tmp = nil;
+
+          
+          $a = [].concat($to_a(node.$children())), (lhs = ($a[0] == null ? nil : $a[0])), (rhs = ($a[1] == null ? nil : $a[1])), $a;
+          if ($truthy(node.$meta()['$[]']("if_test"))) {
+            
+            
+            $writer = ["if_test", (($writer = ["if_test", true]), $send(rhs.$meta(), '[]=', $to_a($writer)), $writer[$rb_minus($writer["length"], 1)])];
+            $send(lhs.$meta(), '[]=', $to_a($writer));
+            $writer[$rb_minus($writer["length"], 1)];;
+            out = self.$process(node.$updated("if", [lhs, self.$s("true"), rhs]));
+          } else {
+            
+            lhs_tmp = self.$next_tmp();
+            out = self.$process(node.$updated("if", [self.$s("lvasgn", lhs_tmp, lhs), self.$s("js_tmp", lhs_tmp), rhs]));
+            self.$free_tmp();
+          };
+          return out;
+        }, 1);
+        
+        $def(self, '$on_and', function $$on_and(node) {
+          var $a, self = this, lhs = nil, rhs = nil, $writer = nil, out = nil, lhs_tmp = nil;
+
+          
+          $a = [].concat($to_a(node.$children())), (lhs = ($a[0] == null ? nil : $a[0])), (rhs = ($a[1] == null ? nil : $a[1])), $a;
+          if ($truthy(node.$meta()['$[]']("if_test"))) {
+            
+            
+            $writer = ["if_test", (($writer = ["if_test", true]), $send(rhs.$meta(), '[]=', $to_a($writer)), $writer[$rb_minus($writer["length"], 1)])];
+            $send(lhs.$meta(), '[]=', $to_a($writer));
+            $writer[$rb_minus($writer["length"], 1)];;
+            out = self.$process(node.$updated("if", [lhs, rhs, self.$s("false")]));
+          } else {
+            
+            lhs_tmp = self.$next_tmp();
+            out = self.$process(node.$updated("if", [self.$s("lvasgn", lhs_tmp, lhs), rhs, self.$s("js_tmp", lhs_tmp)]));
+            self.$free_tmp();
+          };
+          return out;
+        }, 1);
+        
+        $def(self, '$on_begin', function $$on_begin(node) {
+          var $yield = $$on_begin.$$p || nil, self = this, $writer = nil;
+
+          delete $$on_begin.$$p;
+          
+          if (($truthy(node.$meta()['$[]']("if_test")) && ($eqeq(node.$children().$count(), 1)))) {
+            
+            $writer = ["if_test", true];
+            $send(node.$children().$first().$meta(), '[]=', $to_a($writer));
+            $writer[$rb_minus($writer["length"], 1)];
+          };
+          node.$meta().$delete("if_test");
+          return $send2(self, $find_super(self, 'on_begin', $$on_begin, false, true), 'on_begin', [node], $yield);
+        }, 1);
+        self.$private();
         
-        Opal.def(self, '$on_or', $ReturnableLogic_on_or$3 = function $$on_or(node) {
-          var $a, self = this, lhs = nil, rhs = nil, lhs_tmp = nil;
+        $def(self, '$build_if_from_when', function $$build_if_from_when(node, lhs, lhs_tmp, whens, els) {
+          var $a, $b, self = this, first_when = nil, next_whens = nil, parts = nil, expr = nil, rule = nil;
 
           
-          $a = [].concat(Opal.to_a(node.$children())), (lhs = ($a[0] == null ? nil : $a[0])), (rhs = ($a[1] == null ? nil : $a[1])), $a;
-          lhs_tmp = self.$next_tmp();
-          return node.$updated("if", [self.$s("lvasgn", lhs_tmp, self.$process(lhs)), self.$s("js_tmp", lhs_tmp), self.$process(rhs)]);
-        }, $ReturnableLogic_on_or$3.$$arity = 1);
-        return (Opal.def(self, '$on_and', $ReturnableLogic_on_and$4 = function $$on_and(node) {
-          var $a, self = this, lhs = nil, rhs = nil, lhs_tmp = nil;
+          $a = [].concat($to_a(whens)), (first_when = ($a[0] == null ? nil : $a[0])), (next_whens = $slice.call($a, 1)), $a;
+          $a = [].concat($to_a(first_when.$children())), $b = $a.length - 1, $b = ($b < 0) ? 0 : $b, (parts = $slice.call($a, 0, $b)), (expr = ($a[$b] == null ? nil : $a[$b])), $a;
+          rule = self.$build_rule_from_parts(node, lhs, lhs_tmp, parts);
+          return first_when.$updated("if", [rule, self.$process(expr), ($truthy(next_whens['$empty?']()) ? (self.$process(els)) : (self.$build_if_from_when(nil, nil, lhs_tmp, next_whens, els)))]);
+        }, 5);
+        return $def(self, '$build_rule_from_parts', function $$build_rule_from_parts(node, lhs, lhs_tmp, parts) {
+          var $a, self = this, first_part = nil, next_parts = nil, subrule = nil, splat_on = nil, iter_val = nil, block = nil;
 
           
-          $a = [].concat(Opal.to_a(node.$children())), (lhs = ($a[0] == null ? nil : $a[0])), (rhs = ($a[1] == null ? nil : $a[1])), $a;
-          lhs_tmp = self.$next_tmp();
-          return node.$updated("if", [self.$s("lvasgn", lhs_tmp, self.$process(lhs)), self.$process(rhs), self.$s("js_tmp", lhs_tmp)]);
-        }, $ReturnableLogic_on_and$4.$$arity = 1), nil) && 'on_and';
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+          lhs = (($truthy(node) && ($truthy(lhs_tmp))) ? (node.$updated("lvasgn", [lhs_tmp, self.$process(lhs)])) : (self.$s("js_tmp", lhs_tmp)));
+          $a = [].concat($to_a(parts)), (first_part = ($a[0] == null ? nil : $a[0])), (next_parts = $slice.call($a, 1)), $a;
+          subrule = ($eqeq(first_part.$type(), "splat") ? (((splat_on = first_part.$children().$first()), (iter_val = self.$next_tmp()), (block = self.$s("send", self.$process(splat_on), "any?", self.$s("iter", self.$s("args", self.$s("arg", iter_val)), self.$build_rule_from_parts(nil, nil, lhs_tmp, [self.$s("lvar", iter_val)])))), (($truthy(node) && ($truthy(lhs_tmp))) ? (self.$s("begin", lhs, block)) : (block)))) : ($truthy(lhs_tmp) ? (self.$s("send", self.$process(first_part), "===", lhs)) : (self.$process(first_part))));
+          if ($truthy(next_parts['$empty?']())) {
+            return subrule
+          } else {
+            return self.$s("if", subrule, self.$s("true"), self.$build_rule_from_parts(nil, nil, lhs_tmp, next_parts))
+          };
+        }, 4);
+      })($nesting[0], $$('Base'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/rewriters/forward_args"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $range = Opal.range, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["opal/rewriters/forward_args"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $def = Opal.def, $eqeq = Opal.eqeq, $truthy = Opal.truthy, $range = Opal.range, $to_a = Opal.to_a, $send2 = Opal.send2, $find_super = Opal.find_super, $neqeq = Opal.neqeq;
 
-  Opal.add_stubs(['$require', '$process', '$s', '$last', '$children', '$==', '$type', '$[]', '$updated', '$!=', '$class']);
+  Opal.add_stubs('require,process,s,==,type,last,children,[],updated,!=,class');
   
   self.$require("opal/rewriters/base");
   return (function($base, $parent_nesting) {
@@ -31257,75 +27962,54 @@ Opal.modules["opal/rewriters/forward_args"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Rewriters');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'ForwardArgs');
 
-        var $nesting = [self].concat($parent_nesting), $ForwardArgs_on_forward_args$1, $ForwardArgs_on_args$2, $ForwardArgs_on_send$3;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
         
         
-        Opal.def(self, '$on_forward_args', $ForwardArgs_on_forward_args$1 = function $$on_forward_args(_node) {
+        $def(self, '$on_forward_args', function $$on_forward_args(_node) {
           var self = this;
 
           return self.$process(self.$s("args", self.$s("forward_arg", "$")))
-        }, $ForwardArgs_on_forward_args$1.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$on_args', $ForwardArgs_on_args$2 = function $$on_args(node) {
-          var $iter = $ForwardArgs_on_args$2.$$p, $yield = $iter || nil, self = this, $ret_or_1 = nil, prev_children = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        $def(self, '$on_args', function $$on_args(node) {
+          var $yield = $$on_args.$$p || nil, self = this, prev_children = nil;
 
-          if ($iter) $ForwardArgs_on_args$2.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
-          if ($truthy((function() {if ($truthy(($ret_or_1 = node.$children().$last()))) {
-            return node.$children().$last().$type()['$==']("forward_arg")
-          } else {
-            return $ret_or_1
-          }; return nil; })())) {
+          delete $$on_args.$$p;
+          if (($truthy(node.$children().$last()) && ($eqeq(node.$children().$last().$type(), "forward_arg")))) {
             
             prev_children = node.$children()['$[]']($range(0, -2, false));
-            return node.$updated(nil, [].concat(Opal.to_a(prev_children)).concat([self.$s("restarg", "$fwd_rest"), self.$s("blockarg", "$fwd_block")]));
+            return node.$updated(nil, [].concat($to_a(prev_children)).concat([self.$s("restarg", "$fwd_rest"), self.$s("blockarg", "$fwd_block")]));
           } else {
-            return $send2(self, $find_super(self, 'on_args', $ForwardArgs_on_args$2, false, true), 'on_args', $zuper, $iter)
+            return $send2(self, $find_super(self, 'on_args', $$on_args, false, true), 'on_args', [node], $yield)
           }
-        }, $ForwardArgs_on_args$2.$$arity = 1);
-        return (Opal.def(self, '$on_send', $ForwardArgs_on_send$3 = function $$on_send(node) {
-          var $iter = $ForwardArgs_on_send$3.$$p, $yield = $iter || nil, self = this, $ret_or_2 = nil, $ret_or_3 = nil, prev_children = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
-
-          if ($iter) $ForwardArgs_on_send$3.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
-          if ($truthy((function() {if ($truthy(($ret_or_2 = (function() {if ($truthy(($ret_or_3 = node.$children().$last()))) {
-            return node.$children().$last().$class()['$!=']($$($nesting, 'Symbol'))
-          } else {
-            return $ret_or_3
-          }; return nil; })()))) {
-            return node.$children().$last().$type()['$==']("forwarded_args")
-          } else {
-            return $ret_or_2
-          }; return nil; })())) {
+        }, 1);
+        return $def(self, '$on_send', function $$on_send(node) {
+          var $yield = $$on_send.$$p || nil, self = this, prev_children = nil;
+
+          delete $$on_send.$$p;
+          if ((($truthy(node.$children().$last()) && ($neqeq(node.$children().$last().$class(), $$('Symbol')))) && ($eqeq(node.$children().$last().$type(), "forwarded_args")))) {
             
             prev_children = node.$children()['$[]']($range(0, -2, false));
-            return node.$updated(nil, [].concat(Opal.to_a(prev_children)).concat([self.$s("splat", self.$s("lvar", "$fwd_rest")), self.$s("block_pass", self.$s("lvar", "$fwd_block"))]));
+            return node.$updated(nil, [].concat($to_a(prev_children)).concat([self.$s("splat", self.$s("lvar", "$fwd_rest")), self.$s("block_pass", self.$s("lvar", "$fwd_block"))]));
           } else {
-            return $send2(self, $find_super(self, 'on_send', $ForwardArgs_on_send$3, false, true), 'on_send', $zuper, $iter)
+            return $send2(self, $find_super(self, 'on_send', $$on_send, false, true), 'on_send', [node], $yield)
           }
-        }, $ForwardArgs_on_send$3.$$arity = 1), nil) && 'on_send';
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+        }, 1);
+      })($nesting[0], $$('Base'), $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/rewriter"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send;
+Opal.modules["opal/rewriter"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $def = Opal.def, $hash2 = Opal.hash2, $eqeq = Opal.eqeq, $send = Opal.send;
 
-  Opal.add_stubs(['$require', '$<<', '$list', '$delete', '$use', '$disabled?', '$class', '$each', '$new', '$process']);
+  Opal.add_stubs('require,<<,list,delete,==,!=,use,disabled?,class,each,rewritter_disabled?,new,process');
   
   self.$require("opal/rewriters/opal_engine_check");
   self.$require("opal/rewriters/for_rewriter");
@@ -31351,108 +28035,124 @@ Opal.modules["opal/rewriter"] = function(Opal) {
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Rewriter');
 
-      var $nesting = [self].concat($parent_nesting), $Rewriter_initialize$6, $Rewriter_process$7;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.sexp = nil;
+      $proto.sexp = nil;
       
+      self.disabled = false;
       (function(self, $parent_nesting) {
-        var $nesting = [self].concat($parent_nesting), $list$1, $use$2, $delete$3, $disable$4, $disabled$ques$5;
-
         
         
-        Opal.def(self, '$list', $list$1 = function $$list() {
+        
+        $def(self, '$list', function $$list() {
           var self = this, $ret_or_1 = nil;
           if (self.list == null) self.list = nil;
 
-          return (self.list = (function() {if ($truthy(($ret_or_1 = self.list))) {
-            return $ret_or_1
-          } else {
-            return []
-          }; return nil; })())
-        }, $list$1.$$arity = 0);
+          return (self.list = ($truthy(($ret_or_1 = self.list)) ? ($ret_or_1) : ([])))
+        }, 0);
         
-        Opal.def(self, '$use', $use$2 = function $$use(rewriter) {
+        $def(self, '$use', function $$use(rewriter) {
           var self = this;
 
           return self.$list()['$<<'](rewriter)
-        }, $use$2.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$delete', $delete$3 = function(rewriter) {
+        $def(self, '$delete', function $delete$1(rewriter) {
           var self = this;
 
           return self.$list().$delete(rewriter)
-        }, $delete$3.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$disable', $disable$4 = function $$disable() {
-          var $iter = $disable$4.$$p, $yield = $iter || nil, self = this;
+        $def(self, '$disable', function $$disable($kwargs) {
+          var except, $yield = $$disable.$$p || nil, self = this, old_disabled = nil, $ret_or_1 = nil;
+          if (self.disabled == null) self.disabled = nil;
 
-          if ($iter) $disable$4.$$p = null;
+          delete $$disable.$$p;
+          
+          
+          if ($kwargs == null) {
+            $kwargs = $hash2([], {});
+          } else if (!$kwargs.$$is_hash) {
+            throw Opal.ArgumentError.$new('expected kwargs');
+          };
+          
+          except = $kwargs.$$smap["except"];
+          if (except == null) except = nil;
           return (function() { try {
           
-          self.disabled = true;
+          old_disabled = self.disabled;
+          self.disabled = ($truthy(($ret_or_1 = except)) ? ($ret_or_1) : (true));
           return Opal.yieldX($yield, []);;
           } finally {
-            (self.disabled = false)
-          }; })()
-        }, $disable$4.$$arity = 0);
-        return (Opal.def(self, '$disabled?', $disabled$ques$5 = function() {
-          var $a, self = this;
+            (self.disabled = old_disabled)
+          }; })();
+        }, -1);
+        
+        $def(self, '$disabled?', function $disabled$ques$2() {
+          var self = this;
           if (self.disabled == null) self.disabled = nil;
 
-          if ($truthy((($a = self['disabled'], $a != null && $a !== nil) ? 'instance-variable' : nil))) {
-            return self.disabled
-          } else {
-            return nil
-          }
-        }, $disabled$ques$5.$$arity = 0), nil) && 'disabled?';
+          return self.disabled['$=='](true)
+        }, 0);
+        return $def(self, '$rewritter_disabled?', function $rewritter_disabled$ques$3(rewriter) {
+          var self = this;
+          if (self.disabled == null) self.disabled = nil;
+
+          
+          if ($eqeq(self.disabled, false)) {
+            return false
+          };
+          return self.disabled['$!='](rewriter);
+        }, 1);
       })(Opal.get_singleton_class(self), $nesting);
-      self.$use($$$($$($nesting, 'Rewriters'), 'OpalEngineCheck'));
-      self.$use($$$($$($nesting, 'Rewriters'), 'ForRewriter'));
-      self.$use($$$($$($nesting, 'Rewriters'), 'Numblocks'));
-      self.$use($$$($$($nesting, 'Rewriters'), 'ForwardArgs'));
-      self.$use($$$($$($nesting, 'Rewriters'), 'BlockToIter'));
-      self.$use($$$($$($nesting, 'Rewriters'), 'DotJsSyntax'));
-      self.$use($$$($$($nesting, 'Rewriters'), 'PatternMatching'));
-      self.$use($$$($$($nesting, 'Rewriters'), 'JsReservedWords'));
-      self.$use($$$($$($nesting, 'Rewriters'), 'LogicalOperatorAssignment'));
-      self.$use($$$($$($nesting, 'Rewriters'), 'BinaryOperatorAssignment'));
-      self.$use($$$($$($nesting, 'Rewriters'), 'ExplicitWriterReturn'));
-      self.$use($$$($$$($$($nesting, 'Rewriters'), 'Hashes'), 'KeyDuplicatesRewriter'));
-      self.$use($$$($$($nesting, 'Rewriters'), 'ReturnableLogic'));
-      self.$use($$$($$($nesting, 'Rewriters'), 'DumpArgs'));
-      self.$use($$$($$($nesting, 'Rewriters'), 'MlhsArgs'));
-      self.$use($$$($$($nesting, 'Rewriters'), 'InlineArgs'));
-      
-      Opal.def(self, '$initialize', $Rewriter_initialize$6 = function $$initialize(sexp) {
+      self.$use($$$($$('Rewriters'), 'OpalEngineCheck'));
+      self.$use($$$($$('Rewriters'), 'ForRewriter'));
+      self.$use($$$($$('Rewriters'), 'Numblocks'));
+      self.$use($$$($$('Rewriters'), 'ForwardArgs'));
+      self.$use($$$($$('Rewriters'), 'BlockToIter'));
+      self.$use($$$($$('Rewriters'), 'DotJsSyntax'));
+      self.$use($$$($$('Rewriters'), 'PatternMatching'));
+      self.$use($$$($$('Rewriters'), 'JsReservedWords'));
+      self.$use($$$($$('Rewriters'), 'LogicalOperatorAssignment'));
+      self.$use($$$($$('Rewriters'), 'BinaryOperatorAssignment'));
+      self.$use($$$($$('Rewriters'), 'ExplicitWriterReturn'));
+      self.$use($$$($$$($$('Rewriters'), 'Hashes'), 'KeyDuplicatesRewriter'));
+      self.$use($$$($$('Rewriters'), 'ReturnableLogic'));
+      self.$use($$$($$('Rewriters'), 'DumpArgs'));
+      self.$use($$$($$('Rewriters'), 'MlhsArgs'));
+      self.$use($$$($$('Rewriters'), 'InlineArgs'));
+      
+      $def(self, '$initialize', function $$initialize(sexp) {
         var self = this;
 
         return (self.sexp = sexp)
-      }, $Rewriter_initialize$6.$$arity = 1);
-      return (Opal.def(self, '$process', $Rewriter_process$7 = function $$process() {
-        var $$8, self = this;
+      }, 1);
+      return $def(self, '$process', function $$process() {
+        var self = this;
 
         
         if ($truthy(self.$class()['$disabled?']())) {
-          return self.sexp};
-        $send(self.$class().$list(), 'each', [], ($$8 = function(rewriter_class){var self = $$8.$$s == null ? this : $$8.$$s, rewriter = nil;
+          return self.sexp
+        };
+        $send(self.$class().$list(), 'each', [], function $$4(rewriter_class){var self = $$4.$$s == null ? this : $$4.$$s, rewriter = nil;
           if (self.sexp == null) self.sexp = nil;
 
           
           
-          if (rewriter_class == null) {
-            rewriter_class = nil;
+          if (rewriter_class == null) rewriter_class = nil;;
+          if ($truthy(self.$class()['$rewritter_disabled?'](rewriter_class))) {
+            return nil;
           };
           rewriter = rewriter_class.$new();
-          return (self.sexp = rewriter.$process(self.sexp));}, $$8.$$s = self, $$8.$$arity = 1, $$8));
+          return (self.sexp = rewriter.$process(self.sexp));}, {$$arity: 1, $$s: self});
         return self.sexp;
-      }, $Rewriter_process$7.$$arity = 0), nil) && 'process';
+      }, 0);
     })($nesting[0], null, $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/parser/source_buffer"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["opal/parser/source_buffer"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send2 = Opal.send2, $find_super = Opal.find_super, $defs = Opal.defs;
 
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Opal');
@@ -31467,35 +28167,27 @@ Opal.modules["opal/parser/source_buffer"] = function(Opal) {
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'SourceBuffer');
 
-        var $nesting = [self].concat($parent_nesting), $SourceBuffer_recognize_encoding$1;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-        return (Opal.defs(self, '$recognize_encoding', $SourceBuffer_recognize_encoding$1 = function $$recognize_encoding(string) {
-          var $iter = $SourceBuffer_recognize_encoding$1.$$p, $yield = $iter || nil, self = this, $ret_or_1 = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        return $defs(self, '$recognize_encoding', function $$recognize_encoding(string) {
+          var $yield = $$recognize_encoding.$$p || nil, self = this, $ret_or_1 = nil;
 
-          if ($iter) $SourceBuffer_recognize_encoding$1.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
-          if ($truthy(($ret_or_1 = $send2(self, $find_super(self, 'recognize_encoding', $SourceBuffer_recognize_encoding$1, false, true), 'recognize_encoding', $zuper, $iter)))) {
+          delete $$recognize_encoding.$$p;
+          if ($truthy(($ret_or_1 = $send2(self, $find_super(self, 'recognize_encoding', $$recognize_encoding, false, true), 'recognize_encoding', [string], $yield)))) {
             return $ret_or_1
           } else {
-            return $$$($$($nesting, 'Encoding'), 'UTF_8')
+            return $$$($$('Encoding'), 'UTF_8')
           }
-        }, $SourceBuffer_recognize_encoding$1.$$arity = 1), nil) && 'recognize_encoding'
-      })($nesting[0], $$$($$$($$$('::', 'Parser'), 'Source'), 'Buffer'), $nesting)
+        }, 1)
+      })($nesting[0], $$$($$$($$$('Parser'), 'Source'), 'Buffer'), $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/parser/default_config"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $send2 = Opal.send2, $find_super = Opal.find_super, $send = Opal.send, $lambda = Opal.lambda;
+Opal.modules["opal/parser/default_config"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $send2 = Opal.send2, $find_super = Opal.find_super, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $def = Opal.def, $lambda = Opal.lambda, $defs = Opal.defs, $truthy = Opal.truthy, $Opal = Opal.Opal;
 
-  Opal.add_stubs(['$attr_accessor', '$all_errors_are_fatal=', '$diagnostics', '$-', '$ignore_warnings=', '$diagnostics_consumer', '$consumer=', '$extend', '$diagnostics_consumer=', '$new', '$rewrite', '$process', '$default_parser', '$default_parser_class']);
+  Opal.add_stubs('attr_accessor,all_errors_are_fatal=,diagnostics,-,ignore_warnings=,diagnostics_consumer,consumer=,extend,diagnostics_consumer=,new,rewrite,process,default_parser,default_parser_class');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Opal');
 
@@ -31510,146 +28202,123 @@ Opal.modules["opal/parser/default_config"] = function(Opal) {
       (function($base, $parent_nesting) {
         var self = $module($base, 'DefaultConfig');
 
-        var $nesting = [self].concat($parent_nesting), $DefaultConfig_included$2, $DefaultConfig_initialize$4, $DefaultConfig_parse$5, $DefaultConfig_rewrite$6;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
         
-        (function($base, $parent_nesting) {
+        (function($base) {
           var self = $module($base, 'ClassMethods');
 
-          var $nesting = [self].concat($parent_nesting), $ClassMethods_default_parser$1;
-
+          
           
           self.$attr_accessor("diagnostics_consumer");
-          return (Opal.def(self, '$default_parser', $ClassMethods_default_parser$1 = function $$default_parser() {
-            var $iter = $ClassMethods_default_parser$1.$$p, $yield = $iter || nil, self = this, parser = nil, $writer = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+          return $def(self, '$default_parser', function $$default_parser() {
+            var $yield = $$default_parser.$$p || nil, self = this, parser = nil, $writer = nil;
 
-            if ($iter) $ClassMethods_default_parser$1.$$p = null;
-            // Prepare super implicit arguments
-            for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-              $zuper[$zuper_i] = arguments[$zuper_i];
-            }
+            delete $$default_parser.$$p;
             
-            parser = $send2(self, $find_super(self, 'default_parser', $ClassMethods_default_parser$1, false, true), 'default_parser', $zuper, $iter);
+            parser = $send2(self, $find_super(self, 'default_parser', $$default_parser, false, true), 'default_parser', [], $yield);
             
             $writer = [true];
-            $send(parser.$diagnostics(), 'all_errors_are_fatal=', Opal.to_a($writer));
+            $send(parser.$diagnostics(), 'all_errors_are_fatal=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
             
             $writer = [false];
-            $send(parser.$diagnostics(), 'ignore_warnings=', Opal.to_a($writer));
+            $send(parser.$diagnostics(), 'ignore_warnings=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
             
             $writer = [self.$diagnostics_consumer()];
-            $send(parser.$diagnostics(), 'consumer=', Opal.to_a($writer));
+            $send(parser.$diagnostics(), 'consumer=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
             return parser;
-          }, $ClassMethods_default_parser$1.$$arity = 0), nil) && 'default_parser';
-        })($nesting[0], $nesting);
-        Opal.defs(self, '$included', $DefaultConfig_included$2 = function $$included(klass) {
-          var $$3, self = this, $writer = nil;
+          }, 0);
+        })($nesting[0]);
+        $defs(self, '$included', function $$included(klass) {
+          var $writer = nil;
 
           
-          klass.$extend($$($nesting, 'ClassMethods'));
+          klass.$extend($$('ClassMethods'));
           
-          $writer = [$lambda(($$3 = function(diagnostic){var self = $$3.$$s == null ? this : $$3.$$s;
-
+          $writer = [$lambda(function $$1(diagnostic){
             
             
-            if (diagnostic == null) {
-              diagnostic = nil;
-            };
-            return nil;}, $$3.$$s = self, $$3.$$arity = 1, $$3))];
-          $send(klass, 'diagnostics_consumer=', Opal.to_a($writer));
+            if (diagnostic == null) diagnostic = nil;;
+            return nil;}, 1)];
+          $send(klass, 'diagnostics_consumer=', $to_a($writer));
           return $writer[$rb_minus($writer["length"], 1)];;
-        }, $DefaultConfig_included$2.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$initialize', $DefaultConfig_initialize$4 = function $$initialize($a) {
-          var $post_args, $iter = $DefaultConfig_initialize$4.$$p, $yield = $iter || nil, self = this;
+        $def(self, '$initialize', function $$initialize($a) {
+          var $post_args, $rest_arg, $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $DefaultConfig_initialize$4.$$p = null;
+          delete $$initialize.$$p;
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
-          ;
-          return $send2(self, $find_super(self, 'initialize', $DefaultConfig_initialize$4, false, true), 'initialize', [$$$($$$($$($nesting, 'Opal'), 'AST'), 'Builder').$new()], null);
-        }, $DefaultConfig_initialize$4.$$arity = -1);
+          $post_args = Opal.slice.call(arguments);
+          
+          $rest_arg = $post_args;;
+          return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [$$$($$$($$('Opal'), 'AST'), 'Builder').$new()], null);
+        }, -1);
         
-        Opal.def(self, '$parse', $DefaultConfig_parse$5 = function $$parse(source_buffer) {
-          var $iter = $DefaultConfig_parse$5.$$p, $yield = $iter || nil, self = this, parsed = nil, rewriten = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        $def(self, '$parse', function $$parse(source_buffer) {
+          var $yield = $$parse.$$p || nil, self = this, parsed = nil, $ret_or_1 = nil, wrapped = nil, rewriten = nil;
 
-          if ($iter) $DefaultConfig_parse$5.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$parse.$$p;
           
-          parsed = $send2(self, $find_super(self, 'parse', $DefaultConfig_parse$5, false, true), 'parse', $zuper, $iter);
-          rewriten = self.$rewrite(parsed);
+          parsed = ($truthy(($ret_or_1 = $send2(self, $find_super(self, 'parse', $$parse, false, true), 'parse', [source_buffer], $yield))) ? ($ret_or_1) : ($$$($$$($Opal, 'AST'), 'Node').$new("nil")));
+          wrapped = $$$($$$($Opal, 'AST'), 'Node').$new("top", [parsed]);
+          rewriten = self.$rewrite(wrapped);
           return rewriten;
-        }, $DefaultConfig_parse$5.$$arity = 1);
-        return (Opal.def(self, '$rewrite', $DefaultConfig_rewrite$6 = function $$rewrite(node) {
-          var self = this;
-
-          return $$$($$($nesting, 'Opal'), 'Rewriter').$new(node).$process()
-        }, $DefaultConfig_rewrite$6.$$arity = 1), nil) && 'rewrite';
+        }, 1);
+        return $def(self, '$rewrite', function $$rewrite(node) {
+          
+          return $$$($$('Opal'), 'Rewriter').$new(node).$process()
+        }, 1);
       })($nesting[0], $nesting);
       return (function(self, $parent_nesting) {
-        var $nesting = [self].concat($parent_nesting), $default_parser$7;
-
+        
         
         self.$attr_accessor("default_parser_class");
-        return (Opal.def(self, '$default_parser', $default_parser$7 = function $$default_parser() {
+        return $def(self, '$default_parser', function $$default_parser() {
           var self = this;
 
           return self.$default_parser_class().$default_parser()
-        }, $default_parser$7.$$arity = 0), nil) && 'default_parser';
+        }, 0);
       })(Opal.get_singleton_class(self), $nesting);
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/parser/with_ruby_lexer"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $send = Opal.send;
+Opal.modules["opal/parser/with_ruby_lexer"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus;
 
-  Opal.add_stubs(['$include', '$default_parser_class=', '$-']);
+  Opal.add_stubs('include,default_parser_class=,-');
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'WithRubyLexer');
 
-    var $nesting = [self].concat($parent_nesting), $writer = nil;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $writer = nil;
 
     
-    self.$include($$$($$$($$($nesting, 'Opal'), 'Parser'), 'DefaultConfig'));
+    self.$include($$$($$$($$('Opal'), 'Parser'), 'DefaultConfig'));
     
     $writer = [self];
-    $send($$$($$($nesting, 'Opal'), 'Parser'), 'default_parser_class=', Opal.to_a($writer));
+    $send($$$($$('Opal'), 'Parser'), 'default_parser_class=', $to_a($writer));
     return $writer[$rb_minus($writer["length"], 1)];;
-  })($$$($$($nesting, 'Opal'), 'Parser'), $$$($$($nesting, 'Parser'), 'Ruby30'), $nesting)
+  })($$$($$('Opal'), 'Parser'), $$$($$('Parser'), 'Ruby31'), $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/parser/patch"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send, $hash2 = Opal.hash2, $module = Opal.module;
-
-  Opal.add_stubs(['$source', '$unpack', '$+', '$to_a', '$lines', '$end_with?', '$<<', '$map', '$chomp', '$=~', '$diagnostic', '$nil?', '$type', '$[]', '$respond_to?', '$[]=', '$-', '$send', '$value']);
+Opal.modules["opal/parser/patch"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $truthy = Opal.truthy, $def = Opal.def, $rb_plus = Opal.rb_plus, $send = Opal.send, $hash2 = Opal.hash2, $eqeqeq = Opal.eqeqeq, $eqeq = Opal.eqeq, $not = Opal.not, $rb_le = Opal.rb_le, $rb_minus = Opal.rb_minus, $rb_gt = Opal.rb_gt, $rb_times = Opal.rb_times, $rb_divide = Opal.rb_divide, $to_a = Opal.to_a, $module = Opal.module;
+
+  Opal.add_stubs('source,unpack,+,to_a,lines,end_with?,<<,map,chomp,=~,diagnostic,nil?,new,===,type,updated,dedent,first,children,==,empty?,interrupt,compact,encoding,split,force_encoding,length,map!,each_with_index,!,each_char,<=,-,>,*,/,[],[]=,join,respond_to?,send,value');
   
   
-  (function($base, $super, $parent_nesting) {
+  (function($base, $super) {
     var self = $klass($base, $super, 'Lexer');
 
-    var $nesting = [self].concat($parent_nesting), $Lexer_source_buffer$eq$1;
+    var $proto = self.$$prototype;
 
-    self.$$prototype.source_buffer = nil;
-    return (Opal.def(self, '$source_buffer=', $Lexer_source_buffer$eq$1 = function(source_buffer) {
+    $proto.source_buffer = nil;
+    return $def(self, '$source_buffer=', function $Lexer_source_buffer$eq$1(source_buffer) {
       var self = this, source = nil;
 
       
@@ -31661,63 +28330,49 @@ Opal.modules["opal/parser/patch"] = function(Opal) {
       } else {
         return (self.source_pts = nil)
       };
-    }, $Lexer_source_buffer$eq$1.$$arity = 1), nil) && 'source_buffer='
-  })($$($nesting, 'Parser'), null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 1)
+  })($$('Parser'), null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'Literal');
 
-    var $nesting = [self].concat($parent_nesting), $Literal_extend_string$2;
+    var $proto = self.$$prototype;
 
-    self.$$prototype.buffer_s = self.$$prototype.buffer = nil;
+    $proto.buffer_s = $proto.buffer = nil;
     
     
     Opal.udef(self, '$' + "extend_string");;
-    return (Opal.def(self, '$extend_string', $Literal_extend_string$2 = function $$extend_string(string, ts, te) {
+    return $def(self, '$extend_string', function $$extend_string(string, ts, te) {
       var self = this, $ret_or_1 = nil;
 
       
-      self.buffer_s = (function() {if ($truthy(($ret_or_1 = self.buffer_s))) {
-        return $ret_or_1
-      } else {
-        return ts
-      }; return nil; })();
+      self.buffer_s = ($truthy(($ret_or_1 = self.buffer_s)) ? ($ret_or_1) : (ts));
       self.buffer_e = te;
       return (self.buffer = $rb_plus(self.buffer, string));
-    }, $Literal_extend_string$2.$$arity = 3), nil) && 'extend_string';
-  })($$$($$($nesting, 'Parser'), 'Lexer'), null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 3);
+  })($$$($$('Parser'), 'Lexer'), null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'Buffer');
 
-    var $nesting = [self].concat($parent_nesting), $Buffer_source_lines$3;
+    var $proto = self.$$prototype;
 
-    self.$$prototype.lines = self.$$prototype.source = nil;
-    return (Opal.def(self, '$source_lines', $Buffer_source_lines$3 = function $$source_lines() {
-      var $$4, self = this, $ret_or_2 = nil, lines = nil;
+    $proto.lines = $proto.source = nil;
+    return $def(self, '$source_lines', function $$source_lines() {
+      var self = this, $ret_or_1 = nil, lines = nil;
 
-      return (self.lines = (function() {if ($truthy(($ret_or_2 = self.lines))) {
-        return $ret_or_2
-      } else {
+      return (self.lines = ($truthy(($ret_or_1 = self.lines)) ? ($ret_or_1) : (((lines = self.source.$lines().$to_a()), ($truthy(self.source['$end_with?']("\n")) ? (lines['$<<']("")) : nil), $send(lines, 'map', [], function $$2(line){
         
-        lines = self.source.$lines().$to_a();
-        if ($truthy(self.source['$end_with?']("\n"))) {
-          lines['$<<']("")};
-        return $send(lines, 'map', [], ($$4 = function(line){var self = $$4.$$s == null ? this : $$4.$$s;
-
-          
-          
-          if (line == null) {
-            line = nil;
-          };
-          return line.$chomp("\n");}, $$4.$$s = self, $$4.$$arity = 1, $$4));
-      }; return nil; })())
-    }, $Buffer_source_lines$3.$$arity = 0), nil) && 'source_lines'
-  })($$$($$($nesting, 'Parser'), 'Source'), null, $nesting);
-  (function($base, $super, $parent_nesting) {
+        
+        if (line == null) line = nil;;
+        return line.$chomp("\n");}, 1)))))
+    }, 0)
+  })($$$($$('Parser'), 'Source'), null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'Default');
 
-    var $nesting = [self].concat($parent_nesting), $Default_check_lvar_name$5;
-
-    return (Opal.def(self, '$check_lvar_name', $Default_check_lvar_name$5 = function $$check_lvar_name(name, loc) {
+    
+    
+    
+    $def(self, '$check_lvar_name', function $$check_lvar_name(name, loc) {
       var self = this;
 
       if ($truthy(name['$=~'](new RegExp('^[\\p{Ll}|_][\\p{L}\\p{Nl}\\p{Nd}_]*$', 'u')))) {
@@ -31725,69 +28380,155 @@ Opal.modules["opal/parser/patch"] = function(Opal) {
       } else {
         return self.$diagnostic("error", "lvar_name", $hash2(["name"], {"name": name}), loc)
       }
-    }, $Default_check_lvar_name$5.$$arity = 2), nil) && 'check_lvar_name'
-  })($$$($$($nesting, 'Parser'), 'Builders'), null, $nesting);;
-  (function($base, $parent_nesting) {
-    var self = $module($base, 'Mixin');
+    }, 2);
+    return $def(self, '$dedent_string', function $$dedent_string(node, dedent_level) {
+      var dedenter = nil, $ret_or_1 = nil, children = nil;
+
+      
+      if (!$truthy(dedent_level['$nil?']())) {
+        
+        dedenter = $$$($$$($$$('Parser'), 'Lexer'), 'Dedenter').$new(dedent_level);
+        if ($eqeqeq("str", ($ret_or_1 = node.$type()))) {
+          node = node.$updated(nil, [dedenter.$dedent(node.$children().$first())])
+        } else if (($eqeqeq("dstr", $ret_or_1) || ($eqeqeq("xstr", $ret_or_1)))) {
+          
+          children = $send(node.$children(), 'map', [], function $$3(str_node){
+            
+            
+            if (str_node == null) str_node = nil;;
+            if ($eqeq(str_node.$type(), "str")) {
+              
+              str_node = str_node.$updated(nil, [dedenter.$dedent(str_node.$children().$first())]);
+              if ($truthy(str_node.$children().$first()['$empty?']())) {
+                return nil;
+              };
+            } else {
+              dedenter.$interrupt()
+            };
+            return str_node;}, 1);
+          node = node.$updated(nil, children.$compact());
+        } else {
+          nil
+        };
+      };
+      return node;
+    }, 2);
+  })($$$($$('Parser'), 'Builders'), null);
+  (function($base, $super, $parent_nesting) {
+    var self = $klass($base, $super, 'Dedenter');
 
-    var $nesting = [self].concat($parent_nesting), $Mixin_process$6;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
+    return $def(self, '$dedent', function $$dedent(string) {
+      var self = this, original_encoding = nil, lines = nil;
+
+      
+      original_encoding = string.$encoding();
+      lines = string.$force_encoding($$$($$('Encoding'), 'BINARY')).$split("\\\n");
+      if ($eqeq(lines.$length(), 1)) {
+        lines = [string.$force_encoding(original_encoding)]
+      } else {
+        $send(lines, 'map!', [], function $$4(s){
+          
+          
+          if (s == null) s = nil;;
+          return s.$force_encoding(original_encoding);}, 1)
+      };
+      (function(){var $brk = Opal.new_brk(); try {return $send(lines, 'each_with_index', [], function $$5(line, index){var self = $$5.$$s == null ? this : $$5.$$s, left_to_remove = nil, remove = nil, $writer = nil;
+        if (self.at_line_begin == null) self.at_line_begin = nil;
+        if (self.dedent_level == null) self.dedent_level = nil;
+
+        
+        
+        if (line == null) line = nil;;
+        
+        if (index == null) index = nil;;
+        if (($eqeq(index, 0) && ($not(self.at_line_begin)))) {
+          return nil;
+        };
+        left_to_remove = self.dedent_level;
+        remove = 0;
+        (function(){var $brk = Opal.new_brk(); try {return $send(line, 'each_char', [], function $$6(char$){var self = $$6.$$s == null ? this : $$6.$$s, $ret_or_1 = nil;
+          if (self.dedent_level == null) self.dedent_level = nil;
+
+          
+          
+          if (char$ == null) char$ = nil;;
+          if ($truthy($rb_le(left_to_remove, 0))) {
+            
+            Opal.brk(nil, $brk)
+          };
+          if ($eqeqeq(" ", ($ret_or_1 = char$))) {
+            
+            remove = $rb_plus(remove, 1);
+            return (left_to_remove = $rb_minus(left_to_remove, 1));
+          } else if ($eqeqeq("\t", $ret_or_1)) {
+            
+            if ($truthy($rb_gt($rb_times($$('TAB_WIDTH'), $rb_plus($rb_divide(remove, $$('TAB_WIDTH')), 1)), self.dedent_level))) {
+              
+              Opal.brk(nil, $brk)
+            };
+            remove = $rb_plus(remove, 1);
+            return (left_to_remove = $rb_minus(left_to_remove, $$('TAB_WIDTH')));
+          } else {
+            
+            Opal.brk(nil, $brk)
+          };}, {$$arity: 1, $$s: self, $$brk: $brk})
+        } catch (err) { if (err === $brk) { return err.$v } else { throw err } }})();
+        
+        $writer = [index, line['$[]'](Opal.Range.$new(remove, -1, false))];
+        $send(lines, '[]=', $to_a($writer));
+        return $writer[$rb_minus($writer["length"], 1)];;}, {$$arity: 2, $$s: self, $$brk: $brk})
+      } catch (err) { if (err === $brk) { return err.$v } else { throw err } }})();
+      string = lines.$join();
+      self.at_line_begin = string['$end_with?']("\n");
+      return string;
+    }, 1)
+  })($$$($$('Parser'), 'Lexer'), null, $nesting);;
+  (function($base) {
+    var self = $module($base, 'Mixin');
+
+    
     
     
     Opal.udef(self, '$' + "process");;
-    return (Opal.def(self, '$process', $Mixin_process$6 = function $$process(node) {
-      var self = this, $ret_or_3 = nil, type = nil, on_handler = nil, $ret_or_4 = nil, $writer = nil, handler = nil, $ret_or_5 = nil;
+    return $def(self, '$process', function $$process(node) {
+      var self = this, $ret_or_1 = nil, type = nil, on_handler = nil, $writer = nil, handler = nil;
       if (self._on_handler_cache == null) self._on_handler_cache = nil;
 
       
       if ($truthy(node['$nil?']())) {
-        return nil};
-      self._on_handler_cache = (function() {if ($truthy(($ret_or_3 = self._on_handler_cache))) {
-        return $ret_or_3
-      } else {
-        return $hash2([], {})
-      }; return nil; })();
+        return nil
+      };
+      self._on_handler_cache = ($truthy(($ret_or_1 = self._on_handler_cache)) ? ($ret_or_1) : ($hash2([], {})));
       type = node.$type();
-      on_handler = (function() {if ($truthy(($ret_or_4 = self._on_handler_cache['$[]'](type)))) {
-        return $ret_or_4
-      } else {
-        
-        $writer = [type, ((handler = "" + "on_" + (type)), (function() {if ($truthy(self['$respond_to?'](handler))) {
-          return nil
-        } else {
-          return (handler = "handler_missing")
-        }; return nil; })(), handler)];
-        $send(self._on_handler_cache, '[]=', Opal.to_a($writer));
-        return $writer[$rb_minus($writer["length"], 1)];
-      }; return nil; })();
-      if ($truthy(($ret_or_5 = self.$send(on_handler, node)))) {
-        return $ret_or_5
+      on_handler = ($truthy(($ret_or_1 = self._on_handler_cache['$[]'](type))) ? ($ret_or_1) : ((($writer = [type, ((handler = "on_" + (type)), ($truthy(self['$respond_to?'](handler)) ? (nil) : ((handler = "handler_missing"))), handler)]), $send(self._on_handler_cache, '[]=', $to_a($writer)), $writer[$rb_minus($writer["length"], 1)])));
+      if ($truthy(($ret_or_1 = self.$send(on_handler, node)))) {
+        return $ret_or_1
       } else {
         return node
       };
-    }, $Mixin_process$6.$$arity = 1), nil) && 'process';
-  })($$$($$($nesting, 'AST'), 'Processor'), $nesting);
-  return (function($base, $super, $parent_nesting) {
+    }, 1);
+  })($$$($$('AST'), 'Processor'));
+  return (function($base, $super) {
     var self = $klass($base, $super, 'Default');
 
-    var $nesting = [self].concat($parent_nesting), $Default_string_value$7;
-
+    
     
     
     Opal.udef(self, '$' + "string_value");;
-    return (Opal.def(self, '$string_value', $Default_string_value$7 = function $$string_value(token) {
+    return $def(self, '$string_value', function $$string_value(token) {
       var self = this;
 
       return self.$value(token)
-    }, $Default_string_value$7.$$arity = 1), nil) && 'string_value';
-  })($$$($$($nesting, 'Parser'), 'Builders'), null, $nesting);
+    }, 1);
+  })($$$($$('Parser'), 'Builders'), null);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/parser"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$;
+Opal.modules["opal/parser"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, nil = Opal.nil;
 
-  Opal.add_stubs(['$require']);
+  Opal.add_stubs('require');
   
   self.$require("opal/ast/builder");
   self.$require("opal/rewriter");
@@ -31797,11 +28538,10 @@ Opal.modules["opal/parser"] = function(Opal) {
   return self.$require("opal/parser/patch");
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/fragment"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy;
+Opal.modules["opal/fragment"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $def = Opal.def, $eqeqeq = Opal.eqeqeq, $truthy = Opal.truthy, $eqeq = Opal.eqeq, $rb_plus = Opal.rb_plus, $rb_gt = Opal.rb_gt, $to_a = Opal.to_a, $not = Opal.not, $send = Opal.send;
 
-  Opal.add_stubs(['$attr_reader', '$to_s', '$inspect', '$type', '$===', '$first', '$children', '$[]', '$line', '$column']);
+  Opal.add_stubs('attr_reader,to_s,inspect,===,type,[],meta,source_map_name_for,sexp,==,class,+,parent,>,!,first,children,loc,respond_to?,dot,selector,operator,begin,line,location,column');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Opal');
 
@@ -31810,77 +28550,164 @@ Opal.modules["opal/fragment"] = function(Opal) {
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Fragment');
 
-      var $nesting = [self].concat($parent_nesting), $Fragment_initialize$1, $Fragment_inspect$2, $Fragment_source_map_name$3, $Fragment_line$4, $Fragment_column$5;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.code = self.$$prototype.sexp = nil;
+      $proto.code = $proto.scope = $proto.sexp = nil;
       
       self.$attr_reader("code");
       
-      Opal.def(self, '$initialize', $Fragment_initialize$1 = function $$initialize(code, scope, sexp) {
+      $def(self, '$initialize', function $$initialize(code, scope, sexp) {
+        var self = this;
+
+        
+        
+        if (sexp == null) sexp = nil;;
+        self.code = code.$to_s();
+        self.sexp = sexp;
+        return (self.scope = scope);
+      }, -3);
+      
+      $def(self, '$inspect', function $$inspect() {
+        var self = this;
+
+        return "f(" + (self.code.$inspect()) + ")"
+      }, 0);
+      
+      $def(self, '$source_map_name_for', function $$source_map_name_for(sexp) {
+        var $a, self = this, $ret_or_1 = nil, $ret_or_2 = nil, scope = nil, iters = nil, level = nil, const$ = nil, name = nil;
+
+        if ($eqeqeq("top", ($ret_or_1 = sexp.$type()))) {
+          if ($eqeqeq("require", ($ret_or_2 = sexp.$meta()['$[]']("kind")))) {
+            return "<top (required)>"
+          } else if ($eqeqeq("eval", $ret_or_2)) {
+            return "(eval)"
+          } else if ($eqeqeq("main", $ret_or_2)) {
+            return "<main>"
+          } else {
+            return nil
+          }
+        } else if (($eqeqeq("begin", $ret_or_1) || (($eqeqeq("newline", $ret_or_1) || ($eqeqeq("js_return", $ret_or_1)))))) {
+          if ($truthy(self.scope)) {
+            return self.$source_map_name_for(self.scope.$sexp())
+          } else {
+            return nil
+          }
+        } else if ($eqeqeq("iter", $ret_or_1)) {
+          
+          scope = self.scope;
+          iters = 1;
+          while ($truthy(scope)) {
+            if ($eqeq(scope.$class(), $$$($$('Nodes'), 'IterNode'))) {
+              
+              iters = $rb_plus(iters, 1);
+              scope = scope.$parent();
+            } else {
+              break;
+            }
+          };
+          if ($truthy($rb_gt(iters, 1))) {
+            level = " (" + (iters) + " levels)"
+          };
+          return "block" + (level) + " in " + (self.$source_map_name_for(scope.$sexp()));
+        } else if ($eqeqeq("self", $ret_or_1)) {
+          return "self"
+        } else if ($eqeqeq("module", $ret_or_1)) {
+          
+          $a = [].concat($to_a(sexp)), (const$ = ($a[0] == null ? nil : $a[0])), $a;
+          return "<module:" + (self.$source_map_name_for(const$)) + ">";
+        } else if ($eqeqeq("class", $ret_or_1)) {
+          
+          $a = [].concat($to_a(sexp)), (const$ = ($a[0] == null ? nil : $a[0])), $a;
+          return "<class:" + (self.$source_map_name_for(const$)) + ">";
+        } else if ($eqeqeq("const", $ret_or_1)) {
+          
+          $a = [].concat($to_a(sexp)), (scope = ($a[0] == null ? nil : $a[0])), (name = ($a[1] == null ? nil : $a[1])), $a;
+          if (($not(scope) || ($eqeq(scope.$type(), "cbase")))) {
+            return name.$to_s()
+          } else {
+            return "" + (self.$source_map_name_for(scope)) + "::" + (name)
+          };
+        } else if ($eqeqeq("int", $ret_or_1)) {
+          return sexp.$children().$first()
+        } else if ($eqeqeq("def", $ret_or_1)) {
+          return sexp.$children().$first()
+        } else if ($eqeqeq("defs", $ret_or_1)) {
+          return sexp.$children()['$[]'](1)
+        } else if ($eqeqeq("send", $ret_or_1)) {
+          return sexp.$children()['$[]'](1)
+        } else if (($eqeqeq("lvar", $ret_or_1) || (($eqeqeq("lvasgn", $ret_or_1) || (($eqeqeq("lvdeclare", $ret_or_1) || (($eqeqeq("ivar", $ret_or_1) || (($eqeqeq("ivasgn", $ret_or_1) || (($eqeqeq("gvar", $ret_or_1) || (($eqeqeq("cvar", $ret_or_1) || (($eqeqeq("cvasgn", $ret_or_1) || (($eqeqeq("gvars", $ret_or_1) || (($eqeqeq("gvasgn", $ret_or_1) || ($eqeqeq("arg", $ret_or_1)))))))))))))))))))))) {
+          return sexp.$children().$first()
+        } else if (($eqeqeq("str", $ret_or_1) || ($eqeqeq("xstr", $ret_or_1)))) {
+          return self.$source_map_name_for(self.scope.$sexp())
+        } else {
+          return nil
+        }
+      }, 1);
+      
+      $def(self, '$source_map_name', function $$source_map_name() {
         var self = this;
 
         
-        
-        if (sexp == null) {
-          sexp = nil;
+        if (!$truthy(self.sexp)) {
+          return nil
         };
-        self.code = code.$to_s();
-        self.sexp = sexp;
-        return (self.scope = scope);
-      }, $Fragment_initialize$1.$$arity = -3);
+        return self.$source_map_name_for(self.sexp);
+      }, 0);
       
-      Opal.def(self, '$inspect', $Fragment_inspect$2 = function $$inspect() {
-        var self = this;
+      $def(self, '$location', function $$location() {
+        var self = this, loc = nil, $ret_or_1 = nil;
 
-        return "" + "f(" + (self.code.$inspect()) + ")"
-      }, $Fragment_inspect$2.$$arity = 0);
+        if ($not(self.sexp)) {
+          return nil
+        } else if ($eqeq(self.sexp.$type(), "send")) {
+          
+          loc = self.sexp.$loc();
+          if ($truthy(loc['$respond_to?']("dot"))) {
+            if ($truthy(($ret_or_1 = loc.$dot()))) {
+              return $ret_or_1
+            } else {
+              return loc.$selector()
+            }
+          } else if ($truthy(loc['$respond_to?']("operator"))) {
+            return loc.$operator()
+          } else {
+            return self.sexp
+          };
+        } else if ($eqeq(self.sexp.$type(), "iter")) {
+          if ($truthy(loc['$respond_to?']("begin"))) {
+            return self.sexp.$loc().$begin()
+          } else {
+            return self.sexp
+          }
+        } else {
+          return self.sexp
+        }
+      }, 0);
       
-      Opal.def(self, '$source_map_name', $Fragment_source_map_name$3 = function $$source_map_name() {
-        var self = this, $case = nil;
+      $def(self, '$line', function $$line() {
+        var $a, self = this;
 
-        return (function() {$case = self.sexp.$type();
-        if ("top"['$===']($case) || "begin"['$===']($case) || "newline"['$===']($case) || "js_return"['$===']($case)) {return nil}
-        else if ("self"['$===']($case)) {return "self"}
-        else if ("module"['$===']($case)) {return "module"}
-        else if ("class"['$===']($case)) {return "class"}
-        else if ("int"['$===']($case)) {return self.sexp.$children().$first()}
-        else if ("def"['$===']($case)) {return self.sexp.$children().$first()}
-        else if ("defs"['$===']($case)) {return self.sexp.$children()['$[]'](1)}
-        else if ("send"['$===']($case)) {return self.sexp.$children()['$[]'](1)}
-        else if ("lvar"['$===']($case) || "lvasgn"['$===']($case) || "lvdeclare"['$===']($case) || "ivar"['$===']($case) || "ivasgn"['$===']($case) || "gvar"['$===']($case) || "cvar"['$===']($case) || "cvasgn"['$===']($case) || "gvars"['$===']($case) || "gvasgn"['$===']($case)) {return self.sexp.$children().$first()}
-        else { return nil }})()
-      }, $Fragment_source_map_name$3.$$arity = 0);
+        return ($a = self.$location(), ($a === nil || $a == null) ? nil : $send($a, 'line', []))
+      }, 0);
       
-      Opal.def(self, '$line', $Fragment_line$4 = function $$line() {
-        var self = this;
+      $def(self, '$column', function $$column() {
+        var $a, self = this;
 
-        if ($truthy(self.sexp)) {
-          return self.sexp.$line()
-        } else {
-          return nil
-        }
-      }, $Fragment_line$4.$$arity = 0);
-      return (Opal.def(self, '$column', $Fragment_column$5 = function $$column() {
+        return ($a = self.$location(), ($a === nil || $a == null) ? nil : $send($a, 'column', []))
+      }, 0);
+      return $def(self, '$skip_source_map?', function $Fragment_skip_source_map$ques$1() {
         var self = this;
 
-        if ($truthy(self.sexp)) {
-          return self.sexp.$column()
-        } else {
-          return nil
-        }
-      }, $Fragment_column$5.$$arity = 0), nil) && 'column';
+        return self.sexp['$=='](false)
+      }, 0);
     })($nesting[0], null, $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/helpers"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $truthy = Opal.truthy, $send = Opal.send;
+Opal.modules["opal/nodes/helpers"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $truthy = Opal.truthy, $def = Opal.def, $rb_plus = Opal.rb_plus, $send = Opal.send, $hash2 = Opal.hash2, $to_a = Opal.to_a, $eqeqeq = Opal.eqeqeq, $slice = Opal.slice, $eqeq = Opal.eqeq, $rb_minus = Opal.rb_minus;
 
-  Opal.add_stubs(['$require', '$valid_name?', '$inspect', '$=~', '$to_s', '$+', '$indent', '$compiler', '$to_proc', '$parser_indent', '$push', '$current_indent', '$js_truthy_optimize', '$helper', '$fragment', '$expr', '$==', '$type', '$[]', '$children', '$uses_block!', '$scope', '$block_name', '$handlers', '$include?', '$truthy_optimize?', '$new_temp', '$wrap']);
+  Opal.add_stubs('require,valid_name?,inspect,=~,to_s,+,indent,compiler,to_proc,parser_indent,push,fragment,current_indent,js_truthy_optimize,helper,expr,===,type,[],handlers,include?,truthy_optimize?,==,count,<<,method_calls,first,children,s,[]=,meta,-,new_temp,scope,wrap');
   
   self.$require("opal/regexp_anchors");
   return (function($base, $parent_nesting) {
@@ -31896,159 +28723,169 @@ Opal.modules["opal/nodes/helpers"] = function(Opal) {
       return (function($base, $parent_nesting) {
         var self = $module($base, 'Helpers');
 
-        var $nesting = [self].concat($parent_nesting), $Helpers_property$1, $Helpers_valid_name$ques$2, $Helpers_mid_to_jsid$3, $Helpers_indent$4, $Helpers_current_indent$5, $Helpers_line$6, $Helpers_empty_line$7, $Helpers_js_truthy$8, $Helpers_js_falsy$9, $Helpers_js_truthy_optimize$10, $Helpers_conditional_send$11;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
         
         
-        Opal.def(self, '$property', $Helpers_property$1 = function $$property(name) {
+        $def(self, '$property', function $$property(name) {
           var self = this;
 
           if ($truthy(self['$valid_name?'](name))) {
-            return "" + "." + (name)
+            return "." + (name)
           } else {
-            return "" + "[" + (name.$inspect()) + "]"
+            return "[" + (name.$inspect()) + "]"
           }
-        }, $Helpers_property$1.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$valid_name?', $Helpers_valid_name$ques$2 = function(name) {
-          var self = this;
-
-          return $$$($$$($$($nesting, 'Opal'), 'Rewriters'), 'JsReservedWords')['$valid_name?'](name)
-        }, $Helpers_valid_name$ques$2.$$arity = 1);
+        $def(self, '$valid_name?', function $Helpers_valid_name$ques$1(name) {
+          
+          return $$$($$$($$('Opal'), 'Rewriters'), 'JsReservedWords')['$valid_name?'](name)
+        }, 1);
         
-        Opal.def(self, '$mid_to_jsid', $Helpers_mid_to_jsid$3 = function $$mid_to_jsid(mid) {
-          var self = this;
-
-          if ($truthy(/\=|\+|\-|\*|\/|\!|\?|<|\>|\&|\||\^|\%|\~|\[/['$=~'](mid.$to_s()))) {
-            return "" + "['$" + (mid) + "']"
+        $def(self, '$mid_to_jsid', function $$mid_to_jsid(mid) {
+          
+          if ($truthy(/\=|\+|\-|\*|\/|\!|\?|<|\>|\&|\||\^|\%|\~|\[|`/['$=~'](mid.$to_s()))) {
+            return "['$" + (mid) + "']"
           } else {
             return $rb_plus(".$", mid)
           }
-        }, $Helpers_mid_to_jsid$3.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$indent', $Helpers_indent$4 = function $$indent() {
-          var $iter = $Helpers_indent$4.$$p, block = $iter || nil, self = this;
+        $def(self, '$indent', function $$indent() {
+          var block = $$indent.$$p || nil, self = this;
 
-          if ($iter) $Helpers_indent$4.$$p = null;
-          
+          delete $$indent.$$p;
           
-          if ($iter) $Helpers_indent$4.$$p = null;;
+          ;
           return $send(self.$compiler(), 'indent', [], block.$to_proc());
-        }, $Helpers_indent$4.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$current_indent', $Helpers_current_indent$5 = function $$current_indent() {
+        $def(self, '$current_indent', function $$current_indent() {
           var self = this;
 
           return self.$compiler().$parser_indent()
-        }, $Helpers_current_indent$5.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$line', $Helpers_line$6 = function $$line($a) {
+        $def(self, '$line', function $$line($a) {
           var $post_args, strs, self = this;
 
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
           strs = $post_args;;
-          self.$push("" + "\n" + (self.$current_indent()));
-          return $send(self, 'push', Opal.to_a(strs));
-        }, $Helpers_line$6.$$arity = -1);
+          self.$push(self.$fragment("\n" + (self.$current_indent()), $hash2(["loc"], {"loc": false})));
+          return $send(self, 'push', $to_a(strs));
+        }, -1);
         
-        Opal.def(self, '$empty_line', $Helpers_empty_line$7 = function $$empty_line() {
+        $def(self, '$empty_line', function $$empty_line() {
           var self = this;
 
-          return self.$push("\n")
-        }, $Helpers_empty_line$7.$$arity = 0);
+          return self.$push(self.$fragment("\n", $hash2(["loc"], {"loc": false})))
+        }, 0);
         
-        Opal.def(self, '$js_truthy', $Helpers_js_truthy$8 = function $$js_truthy(sexp) {
+        $def(self, '$js_truthy', function $$js_truthy(sexp) {
           var self = this, optimize = nil;
 
           
           if ($truthy((optimize = self.$js_truthy_optimize(sexp)))) {
-            return optimize};
+            return optimize
+          };
           self.$helper("truthy");
           return [self.$fragment("$truthy("), self.$expr(sexp), self.$fragment(")")];
-        }, $Helpers_js_truthy$8.$$arity = 1);
-        
-        Opal.def(self, '$js_falsy', $Helpers_js_falsy$9 = function $$js_falsy(sexp) {
-          var self = this, mid = nil;
-
-          
-          if (sexp.$type()['$==']("send")) {
-            
-            mid = sexp.$children()['$[]'](1);
-            if (mid['$==']("block_given?")) {
-              
-              self.$scope()['$uses_block!']();
-              return "" + (self.$scope().$block_name()) + " === nil";};};
-          self.$helper("falsy");
-          return [self.$fragment("$falsy("), self.$expr(sexp), self.$fragment(")")];
-        }, $Helpers_js_falsy$9.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$js_truthy_optimize', $Helpers_js_truthy_optimize$10 = function $$js_truthy_optimize(sexp) {
-          var self = this, mid = nil, receiver_handler_class = nil, $ret_or_1 = nil, receiver = nil, allow_optimization_on_type = nil, $ret_or_2 = nil, $ret_or_3 = nil, $ret_or_4 = nil, $ret_or_5 = nil;
+        $def(self, '$js_truthy_optimize', function $$js_truthy_optimize(sexp) {
+          var $a, self = this, $ret_or_1 = nil, receiver = nil, mid = nil, args = nil, receiver_handler_class = nil, $ret_or_2 = nil, allow_optimization_on_type = nil, $ret_or_3 = nil, _test = nil, true_body = nil, false_body = nil, $writer = nil;
 
-          if (sexp.$type()['$==']("send")) {
+          if ($eqeqeq("send", ($ret_or_1 = sexp.$type()))) {
             
-            mid = sexp.$children()['$[]'](1);
-            receiver_handler_class = (function() {if ($truthy(($ret_or_1 = (receiver = sexp.$children()['$[]'](0))))) {
-              return self.$compiler().$handlers()['$[]'](receiver.$type())
-            } else {
-              return $ret_or_1
-            }; return nil; })();
-            allow_optimization_on_type = (function() {if ($truthy(($ret_or_2 = (function() {if ($truthy(($ret_or_3 = $$$($$($nesting, 'Compiler'), 'COMPARE')['$include?'](mid.$to_s())))) {
-              return receiver_handler_class
-            } else {
-              return $ret_or_3
-            }; return nil; })()))) {
-              return receiver_handler_class['$truthy_optimize?']()
-            } else {
-              return $ret_or_2
-            }; return nil; })();
-            if ($truthy((function() {if ($truthy(($ret_or_4 = (function() {if ($truthy(($ret_or_5 = allow_optimization_on_type))) {
-              return $ret_or_5
+            $a = [].concat($to_a(sexp)), (receiver = ($a[0] == null ? nil : $a[0])), (mid = ($a[1] == null ? nil : $a[1])), (args = $slice.call($a, 2)), $a;
+            receiver_handler_class = ($truthy(($ret_or_2 = receiver)) ? (self.$compiler().$handlers()['$[]'](receiver.$type())) : ($ret_or_2));
+            allow_optimization_on_type = ($truthy(($ret_or_2 = ($truthy(($ret_or_3 = $$$($$('Compiler'), 'COMPARE')['$include?'](mid.$to_s()))) ? (receiver_handler_class) : ($ret_or_3)))) ? (receiver_handler_class['$truthy_optimize?']()) : ($ret_or_2));
+            if (($truthy(allow_optimization_on_type) || ($eqeq(mid, "block_given?")))) {
+              return self.$expr(sexp)
+            } else if ($eqeq(args.$count(), 1)) {
+              if ($eqeqeq("==", ($ret_or_2 = mid))) {
+                
+                self.$helper("eqeq");
+                self.$compiler().$method_calls()['$<<'](mid);
+                return [self.$fragment("$eqeq("), self.$expr(receiver), self.$fragment(", "), self.$expr(args.$first()), self.$fragment(")")];
+              } else if ($eqeqeq("===", $ret_or_2)) {
+                
+                self.$helper("eqeqeq");
+                self.$compiler().$method_calls()['$<<'](mid);
+                return [self.$fragment("$eqeqeq("), self.$expr(receiver), self.$fragment(", "), self.$expr(args.$first()), self.$fragment(")")];
+              } else if ($eqeqeq("!=", $ret_or_2)) {
+                
+                self.$helper("neqeq");
+                self.$compiler().$method_calls()['$<<'](mid);
+                return [self.$fragment("$neqeq("), self.$expr(receiver), self.$fragment(", "), self.$expr(args.$first()), self.$fragment(")")];
+              } else {
+                return nil
+              }
+            } else if ($eqeq(args.$count(), 0)) {
+              if ($eqeqeq("!", ($ret_or_2 = mid))) {
+                
+                self.$helper("not");
+                self.$compiler().$method_calls()['$<<'](mid);
+                return [self.$fragment("$not("), self.$expr(receiver), self.$fragment(")")];
+              } else {
+                return nil
+              }
             } else {
-              return mid['$==']("block_given?")
-            }; return nil; })()))) {
-              return $ret_or_4
+              return nil
+            };
+          } else if ($eqeqeq("begin", $ret_or_1)) {
+            if ($eqeq(sexp.$children().$count(), 1)) {
+              return self.$js_truthy_optimize(sexp.$children().$first())
             } else {
-              return mid['$==']("==")
-            }; return nil; })())) {
-              return self.$expr(sexp)
+              return nil
+            }
+          } else if ($eqeqeq("if", $ret_or_1)) {
+            
+            $a = [].concat($to_a(sexp)), (_test = ($a[0] == null ? nil : $a[0])), (true_body = ($a[1] == null ? nil : $a[1])), (false_body = ($a[2] == null ? nil : $a[2])), $a;
+            if ($eqeq(true_body, self.$s("true"))) {
+              
+              
+              $writer = ["do_js_truthy_on_false_body", true];
+              $send(sexp.$meta(), '[]=', $to_a($writer));
+              $writer[$rb_minus($writer["length"], 1)];;
+              return self.$expr(sexp);
+            } else if ($eqeq(false_body, self.$s("false"))) {
+              
+              
+              $writer = ["do_js_truthy_on_true_body", true];
+              $send(sexp.$meta(), '[]=', $to_a($writer));
+              $writer[$rb_minus($writer["length"], 1)];;
+              return self.$expr(sexp);
             } else {
               return nil
             };
           } else {
             return nil
           }
-        }, $Helpers_js_truthy_optimize$10.$$arity = 1);
-        return (Opal.def(self, '$conditional_send', $Helpers_conditional_send$11 = function $$conditional_send(recvr) {
-          var $iter = $Helpers_conditional_send$11.$$p, $yield = $iter || nil, self = this, receiver_temp = nil;
+        }, 1);
+        return $def(self, '$conditional_send', function $$conditional_send(recvr) {
+          var $yield = $$conditional_send.$$p || nil, self = this, receiver_temp = nil;
 
-          if ($iter) $Helpers_conditional_send$11.$$p = null;
+          delete $$conditional_send.$$p;
           
           receiver_temp = self.$scope().$new_temp();
           self.$push("" + (receiver_temp) + " = ", recvr);
-          self.$push("" + ", (" + (receiver_temp) + " === nil || " + (receiver_temp) + " == null) ? nil : ");
+          self.$push(", (" + (receiver_temp) + " === nil || " + (receiver_temp) + " == null) ? nil : ");
           Opal.yield1($yield, receiver_temp);
           return self.$wrap("(", ")");
-        }, $Helpers_conditional_send$11.$$arity = 1), nil) && 'conditional_send';
+        }, 1);
       })($nesting[0], $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/base"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $hash2 = Opal.hash2, $send = Opal.send;
-
-  Opal.add_stubs(['$require', '$include', '$each', '$[]=', '$handlers', '$-', '$each_with_index', '$define_method', '$[]', '$children', '$attr_reader', '$type', '$compile', '$raise', '$is_a?', '$fragment', '$<<', '$reverse_each', '$unshift', '$push', '$new', '$scope', '$error', '$top_scope', '$s', '$==', '$process', '$expr', '$add_scope_local', '$to_sym', '$add_scope_ivar', '$add_scope_gvar', '$add_scope_temp', '$helper', '$with_temp', '$to_proc', '$in_while?', '$instance_variable_get', '$has_rescue_else?', '$in_ensure', '$in_ensure?', '$in_resbody', '$in_resbody?', '$in_rescue', '$!', '$class_scope?', '$sclass?', '$+', '$parent', '$class_variable_owner_nesting_level', '$comments', '$compiler', '$loc', '$name', '$source_buffer', '$expression', '$start_with?', '$end_with?', '$line']);
+Opal.modules["opal/nodes/base"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $hash2 = Opal.hash2, $defs = Opal.defs, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $def = Opal.def, $Opal = Opal.Opal, $rb_plus = Opal.rb_plus;
+
+  Opal.add_stubs('require,include,each,[]=,handlers,-,each_with_index,define_method,[],children,attr_reader,type,top_scope,top_scope=,compile,raise,is_a?,fragment,<<,reverse_each,unshift,push,new,scope,error,loc,==,process,expr,add_scope_local,to_sym,add_scope_ivar,add_scope_gvar,add_scope_temp,helper,with_temp,to_proc,in_while?,instance_variable_get,has_rescue_else?,in_ensure,in_ensure?,in_resbody,in_resbody?,in_rescue,!,class_scope?,sclass?,+,parent,nesting,class_variable_owner_nesting_level,comments,compiler,name,source_buffer,expression,start_with?,end_with?,line');
   
   self.$require("opal/nodes/helpers");
   return (function($base, $parent_nesting) {
@@ -32064,237 +28901,241 @@ Opal.modules["opal/nodes/base"] = function(Opal) {
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'Base');
 
-        var $nesting = [self].concat($parent_nesting), $Base_handlers$1, $Base_handle$2, $Base_children$4, $Base_truthy_optimize$ques$7, $Base_initialize$8, $Base_children$9, $Base_compile_to_fragments$10, $Base_compile$11, $Base_push$12, $Base_unshift$14, $Base_wrap$16, $Base_fragment$17, $Base_error$18, $Base_scope$19, $Base_top_scope$20, $Base_s$21, $Base_expr$ques$22, $Base_recv$ques$23, $Base_stmt$ques$24, $Base_process$25, $Base_expr$26, $Base_recv$27, $Base_stmt$28, $Base_expr_or_nil$29, $Base_add_local$30, $Base_add_ivar$31, $Base_add_gvar$32, $Base_add_temp$33, $Base_helper$34, $Base_with_temp$35, $Base_in_while$ques$36, $Base_while_loop$37, $Base_has_rescue_else$ques$38, $Base_in_ensure$39, $Base_in_ensure$ques$40, $Base_in_resbody$41, $Base_in_resbody$ques$42, $Base_in_rescue$43, $Base_class_variable_owner_nesting_level$44, $Base_class_variable_owner$45, $Base_comments$46, $Base_source_location$47;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.sexp = self.$$prototype.fragments = self.$$prototype.compiler = self.$$prototype.level = nil;
+        $proto.compiler = $proto.sexp = $proto.fragments = $proto.level = nil;
         
-        self.$include($$($nesting, 'Helpers'));
-        Opal.defs(self, '$handlers', $Base_handlers$1 = function $$handlers() {
+        self.$include($$('Helpers'));
+        $defs(self, '$handlers', function $$handlers() {
           var self = this, $ret_or_1 = nil;
           if (self.handlers == null) self.handlers = nil;
 
-          return (self.handlers = (function() {if ($truthy(($ret_or_1 = self.handlers))) {
-            return $ret_or_1
-          } else {
-            return $hash2([], {})
-          }; return nil; })())
-        }, $Base_handlers$1.$$arity = 0);
-        Opal.defs(self, '$handle', $Base_handle$2 = function $$handle($a) {
-          var $post_args, types, $$3, self = this;
+          return (self.handlers = ($truthy(($ret_or_1 = self.handlers)) ? ($ret_or_1) : ($hash2([], {}))))
+        }, 0);
+        $defs(self, '$handle', function $$handle($a) {
+          var $post_args, types, self = this;
 
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
           types = $post_args;;
-          return $send(types, 'each', [], ($$3 = function(type){var self = $$3.$$s == null ? this : $$3.$$s, $writer = nil;
+          return $send(types, 'each', [], function $$1(type){var self = $$1.$$s == null ? this : $$1.$$s, $writer = nil;
 
             
             
-            if (type == null) {
-              type = nil;
-            };
+            if (type == null) type = nil;;
             $writer = [type, self];
-            $send($$($nesting, 'Base').$handlers(), '[]=', Opal.to_a($writer));
-            return $writer[$rb_minus($writer["length"], 1)];}, $$3.$$s = self, $$3.$$arity = 1, $$3));
-        }, $Base_handle$2.$$arity = -1);
-        Opal.defs(self, '$children', $Base_children$4 = function $$children($a) {
-          var $post_args, names, $$5, self = this;
+            $send($$('Base').$handlers(), '[]=', $to_a($writer));
+            return $writer[$rb_minus($writer["length"], 1)];}, {$$arity: 1, $$s: self});
+        }, -1);
+        $defs(self, '$children', function $$children($a) {
+          var $post_args, names, self = this;
 
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
           names = $post_args;;
-          return $send(names, 'each_with_index', [], ($$5 = function(name, idx){var self = $$5.$$s == null ? this : $$5.$$s, $$6;
+          return $send(names, 'each_with_index', [], function $$2(name, idx){var self = $$2.$$s == null ? this : $$2.$$s;
 
             
             
-            if (name == null) {
-              name = nil;
-            };
+            if (name == null) name = nil;;
             
-            if (idx == null) {
-              idx = nil;
-            };
-            return $send(self, 'define_method', [name], ($$6 = function(){var self = $$6.$$s == null ? this : $$6.$$s;
+            if (idx == null) idx = nil;;
+            return $send(self, 'define_method', [name], function $$3(){var self = $$3.$$s == null ? this : $$3.$$s;
               if (self.sexp == null) self.sexp = nil;
 
-              return self.sexp.$children()['$[]'](idx)}, $$6.$$s = self, $$6.$$arity = 0, $$6));}, $$5.$$s = self, $$5.$$arity = 2, $$5));
-        }, $Base_children$4.$$arity = -1);
-        Opal.defs(self, '$truthy_optimize?', $Base_truthy_optimize$ques$7 = function() {
-          var self = this;
-
+              return self.sexp.$children()['$[]'](idx)}, {$$arity: 0, $$s: self});}, {$$arity: 2, $$s: self});
+        }, -1);
+        $defs(self, '$truthy_optimize?', function $Base_truthy_optimize$ques$4() {
+          
           return false
-        }, $Base_truthy_optimize$ques$7.$$arity = 0);
-        self.$attr_reader("compiler", "type");
+        }, 0);
+        self.$attr_reader("compiler", "type", "sexp");
         
-        Opal.def(self, '$initialize', $Base_initialize$8 = function $$initialize(sexp, level, compiler) {
-          var self = this;
+        $def(self, '$initialize', function $$initialize(sexp, level, compiler) {
+          var self = this, $ret_or_1 = nil, $writer = nil;
 
           
           self.sexp = sexp;
           self.type = sexp.$type();
           self.level = level;
-          return (self.compiler = compiler);
-        }, $Base_initialize$8.$$arity = 3);
+          self.compiler = compiler;
+          if ($truthy(($ret_or_1 = self.compiler.$top_scope()))) {
+            return $ret_or_1
+          } else {
+            
+            $writer = [self];
+            $send(self.compiler, 'top_scope=', $to_a($writer));
+            return $writer[$rb_minus($writer["length"], 1)];
+          };
+        }, 3);
         
-        Opal.def(self, '$children', $Base_children$9 = function $$children() {
+        $def(self, '$children', function $$children() {
           var self = this;
 
           return self.sexp.$children()
-        }, $Base_children$9.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_to_fragments', $Base_compile_to_fragments$10 = function $$compile_to_fragments() {
+        $def(self, '$compile_to_fragments', function $$compile_to_fragments() {
           var $a, self = this;
 
           
           if ($truthy((($a = self['fragments'], $a != null && $a !== nil) ? 'instance-variable' : nil))) {
-            return self.fragments};
+            return self.fragments
+          };
           self.fragments = [];
           self.$compile();
           return self.fragments;
-        }, $Base_compile_to_fragments$10.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile', $Base_compile$11 = function $$compile() {
+        $def(self, '$compile', function $$compile() {
           var self = this;
 
           return self.$raise("Not Implemented")
-        }, $Base_compile$11.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$push', $Base_push$12 = function $$push($a) {
-          var $post_args, strs, $$13, self = this;
+        $def(self, '$push', function $$push($a) {
+          var $post_args, strs, self = this;
 
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
           strs = $post_args;;
-          return $send(strs, 'each', [], ($$13 = function(str){var self = $$13.$$s == null ? this : $$13.$$s;
+          return $send(strs, 'each', [], function $$5(str){var self = $$5.$$s == null ? this : $$5.$$s;
             if (self.fragments == null) self.fragments = nil;
 
             
             
-            if (str == null) {
-              str = nil;
+            if (str == null) str = nil;;
+            if ($truthy(str['$is_a?']($$('String')))) {
+              str = self.$fragment(str)
             };
-            if ($truthy(str['$is_a?']($$($nesting, 'String')))) {
-              str = self.$fragment(str)};
-            return self.fragments['$<<'](str);}, $$13.$$s = self, $$13.$$arity = 1, $$13));
-        }, $Base_push$12.$$arity = -1);
+            return self.fragments['$<<'](str);}, {$$arity: 1, $$s: self});
+        }, -1);
         
-        Opal.def(self, '$unshift', $Base_unshift$14 = function $$unshift($a) {
-          var $post_args, strs, $$15, self = this;
+        $def(self, '$unshift', function $$unshift($a) {
+          var $post_args, strs, self = this;
 
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
           strs = $post_args;;
-          return $send(strs, 'reverse_each', [], ($$15 = function(str){var self = $$15.$$s == null ? this : $$15.$$s;
+          return $send(strs, 'reverse_each', [], function $$6(str){var self = $$6.$$s == null ? this : $$6.$$s;
             if (self.fragments == null) self.fragments = nil;
 
             
             
-            if (str == null) {
-              str = nil;
+            if (str == null) str = nil;;
+            if ($truthy(str['$is_a?']($$('String')))) {
+              str = self.$fragment(str)
             };
-            if ($truthy(str['$is_a?']($$($nesting, 'String')))) {
-              str = self.$fragment(str)};
-            return self.fragments.$unshift(str);}, $$15.$$s = self, $$15.$$arity = 1, $$15));
-        }, $Base_unshift$14.$$arity = -1);
+            return self.fragments.$unshift(str);}, {$$arity: 1, $$s: self});
+        }, -1);
         
-        Opal.def(self, '$wrap', $Base_wrap$16 = function $$wrap(pre, post) {
+        $def(self, '$wrap', function $$wrap(pre, post) {
           var self = this;
 
           
           self.$unshift(pre);
           return self.$push(post);
-        }, $Base_wrap$16.$$arity = 2);
+        }, 2);
         
-        Opal.def(self, '$fragment', $Base_fragment$17 = function $$fragment(str) {
-          var self = this;
+        $def(self, '$fragment', function $$fragment(str, $kwargs) {
+          var loc, self = this, $ret_or_1 = nil;
 
-          return $$$($$($nesting, 'Opal'), 'Fragment').$new(str, self.$scope(), self.sexp)
-        }, $Base_fragment$17.$$arity = 1);
+          
+          
+          if ($kwargs == null) {
+            $kwargs = $hash2([], {});
+          } else if (!$kwargs.$$is_hash) {
+            throw Opal.ArgumentError.$new('expected kwargs');
+          };
+          
+          loc = $kwargs.$$smap["loc"];
+          if (loc == null) loc = true;
+          return $$$($$('Opal'), 'Fragment').$new(str, self.$scope(), ($truthy(($ret_or_1 = loc)) ? (self.sexp) : ($ret_or_1)));
+        }, -2);
         
-        Opal.def(self, '$error', $Base_error$18 = function $$error(msg) {
+        $def(self, '$error', function $$error(msg) {
           var self = this;
 
           return self.compiler.$error(msg)
-        }, $Base_error$18.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$scope', $Base_scope$19 = function $$scope() {
+        $def(self, '$scope', function $$scope() {
           var self = this;
 
           return self.compiler.$scope()
-        }, $Base_scope$19.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$top_scope', $Base_top_scope$20 = function $$top_scope() {
+        $def(self, '$top_scope', function $$top_scope() {
           var self = this;
 
-          return self.$scope().$top_scope()
-        }, $Base_top_scope$20.$$arity = 0);
+          return self.compiler.$top_scope()
+        }, 0);
         
-        Opal.def(self, '$s', $Base_s$21 = function $$s($a) {
-          var $post_args, args, self = this;
+        $def(self, '$s', function $$s(type, $a) {
+          var $post_args, children, self = this;
 
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments, 1);
           
-          args = $post_args;;
-          return $send(self.compiler, 's', Opal.to_a(args));
-        }, $Base_s$21.$$arity = -1);
+          children = $post_args;;
+          return $$$($$$($Opal, 'AST'), 'Node').$new(type, children, $hash2(["location"], {"location": self.sexp.$loc()}));
+        }, -2);
         
-        Opal.def(self, '$expr?', $Base_expr$ques$22 = function() {
+        $def(self, '$expr?', function $Base_expr$ques$7() {
           var self = this;
 
           return self.level['$==']("expr")
-        }, $Base_expr$ques$22.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$recv?', $Base_recv$ques$23 = function() {
+        $def(self, '$recv?', function $Base_recv$ques$8() {
           var self = this;
 
           return self.level['$==']("recv")
-        }, $Base_recv$ques$23.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$stmt?', $Base_stmt$ques$24 = function() {
+        $def(self, '$stmt?', function $Base_stmt$ques$9() {
           var self = this;
 
           return self.level['$==']("stmt")
-        }, $Base_stmt$ques$24.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$process', $Base_process$25 = function $$process(sexp, level) {
+        $def(self, '$process', function $$process(sexp, level) {
           var self = this;
 
           
           
-          if (level == null) {
-            level = "expr";
-          };
+          if (level == null) level = "expr";;
           return self.compiler.$process(sexp, level);
-        }, $Base_process$25.$$arity = -2);
+        }, -2);
         
-        Opal.def(self, '$expr', $Base_expr$26 = function $$expr(sexp) {
+        $def(self, '$expr', function $$expr(sexp) {
           var self = this;
 
           return self.compiler.$process(sexp, "expr")
-        }, $Base_expr$26.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$recv', $Base_recv$27 = function $$recv(sexp) {
+        $def(self, '$recv', function $$recv(sexp) {
           var self = this;
 
           return self.compiler.$process(sexp, "recv")
-        }, $Base_recv$27.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$stmt', $Base_stmt$28 = function $$stmt(sexp) {
+        $def(self, '$stmt', function $$stmt(sexp) {
           var self = this;
 
           return self.compiler.$process(sexp, "stmt")
-        }, $Base_stmt$28.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$expr_or_nil', $Base_expr_or_nil$29 = function $$expr_or_nil(sexp) {
+        $def(self, '$expr_or_nil', function $$expr_or_nil(sexp) {
           var self = this;
 
           if ($truthy(sexp)) {
@@ -32302,176 +29143,158 @@ Opal.modules["opal/nodes/base"] = function(Opal) {
           } else {
             return "nil"
           }
-        }, $Base_expr_or_nil$29.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$add_local', $Base_add_local$30 = function $$add_local(name) {
+        $def(self, '$add_local', function $$add_local(name) {
           var self = this;
 
           return self.$scope().$add_scope_local(name.$to_sym())
-        }, $Base_add_local$30.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$add_ivar', $Base_add_ivar$31 = function $$add_ivar(name) {
+        $def(self, '$add_ivar', function $$add_ivar(name) {
           var self = this;
 
           return self.$scope().$add_scope_ivar(name)
-        }, $Base_add_ivar$31.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$add_gvar', $Base_add_gvar$32 = function $$add_gvar(name) {
+        $def(self, '$add_gvar', function $$add_gvar(name) {
           var self = this;
 
           return self.$scope().$add_scope_gvar(name)
-        }, $Base_add_gvar$32.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$add_temp', $Base_add_temp$33 = function $$add_temp(temp) {
+        $def(self, '$add_temp', function $$add_temp(temp) {
           var self = this;
 
           return self.$scope().$add_scope_temp(temp)
-        }, $Base_add_temp$33.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$helper', $Base_helper$34 = function $$helper(name) {
+        $def(self, '$helper', function $$helper(name) {
           var self = this;
 
           return self.compiler.$helper(name)
-        }, $Base_helper$34.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$with_temp', $Base_with_temp$35 = function $$with_temp() {
-          var $iter = $Base_with_temp$35.$$p, block = $iter || nil, self = this;
+        $def(self, '$with_temp', function $$with_temp() {
+          var block = $$with_temp.$$p || nil, self = this;
 
-          if ($iter) $Base_with_temp$35.$$p = null;
+          delete $$with_temp.$$p;
           
-          
-          if ($iter) $Base_with_temp$35.$$p = null;;
+          ;
           return $send(self.compiler, 'with_temp', [], block.$to_proc());
-        }, $Base_with_temp$35.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$in_while?', $Base_in_while$ques$36 = function() {
+        $def(self, '$in_while?', function $Base_in_while$ques$10() {
           var self = this;
 
           return self.compiler['$in_while?']()
-        }, $Base_in_while$ques$36.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$while_loop', $Base_while_loop$37 = function $$while_loop() {
+        $def(self, '$while_loop', function $$while_loop() {
           var self = this;
 
           return self.compiler.$instance_variable_get("@while_loop")
-        }, $Base_while_loop$37.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$has_rescue_else?', $Base_has_rescue_else$ques$38 = function() {
+        $def(self, '$has_rescue_else?', function $Base_has_rescue_else$ques$11() {
           var self = this;
 
           return self.$scope()['$has_rescue_else?']()
-        }, $Base_has_rescue_else$ques$38.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$in_ensure', $Base_in_ensure$39 = function $$in_ensure() {
-          var $iter = $Base_in_ensure$39.$$p, block = $iter || nil, self = this;
+        $def(self, '$in_ensure', function $$in_ensure() {
+          var block = $$in_ensure.$$p || nil, self = this;
 
-          if ($iter) $Base_in_ensure$39.$$p = null;
+          delete $$in_ensure.$$p;
           
-          
-          if ($iter) $Base_in_ensure$39.$$p = null;;
+          ;
           return $send(self.$scope(), 'in_ensure', [], block.$to_proc());
-        }, $Base_in_ensure$39.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$in_ensure?', $Base_in_ensure$ques$40 = function() {
+        $def(self, '$in_ensure?', function $Base_in_ensure$ques$12() {
           var self = this;
 
           return self.$scope()['$in_ensure?']()
-        }, $Base_in_ensure$ques$40.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$in_resbody', $Base_in_resbody$41 = function $$in_resbody() {
-          var $iter = $Base_in_resbody$41.$$p, block = $iter || nil, self = this;
+        $def(self, '$in_resbody', function $$in_resbody() {
+          var block = $$in_resbody.$$p || nil, self = this;
 
-          if ($iter) $Base_in_resbody$41.$$p = null;
+          delete $$in_resbody.$$p;
           
-          
-          if ($iter) $Base_in_resbody$41.$$p = null;;
+          ;
           return $send(self.$scope(), 'in_resbody', [], block.$to_proc());
-        }, $Base_in_resbody$41.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$in_resbody?', $Base_in_resbody$ques$42 = function() {
+        $def(self, '$in_resbody?', function $Base_in_resbody$ques$13() {
           var self = this;
 
           return self.$scope()['$in_resbody?']()
-        }, $Base_in_resbody$ques$42.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$in_rescue', $Base_in_rescue$43 = function $$in_rescue(node) {
-          var $iter = $Base_in_rescue$43.$$p, block = $iter || nil, self = this;
+        $def(self, '$in_rescue', function $$in_rescue(node) {
+          var block = $$in_rescue.$$p || nil, self = this;
 
-          if ($iter) $Base_in_rescue$43.$$p = null;
+          delete $$in_rescue.$$p;
           
-          
-          if ($iter) $Base_in_rescue$43.$$p = null;;
+          ;
           return $send(self.$scope(), 'in_rescue', [node], block.$to_proc());
-        }, $Base_in_rescue$43.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$class_variable_owner_nesting_level', $Base_class_variable_owner_nesting_level$44 = function $$class_variable_owner_nesting_level() {
-          var $a, self = this, cvar_scope = nil, nesting_level = nil, $ret_or_2 = nil;
+        $def(self, '$class_variable_owner_nesting_level', function $$class_variable_owner_nesting_level() {
+          var $a, self = this, cvar_scope = nil, nesting_level = nil, $ret_or_1 = nil;
 
           
           cvar_scope = self.$scope();
           nesting_level = 0;
-          while ($truthy((function() {if ($truthy(($ret_or_2 = cvar_scope))) {
-            return cvar_scope['$class_scope?']()['$!']()
-          } else {
-            return $ret_or_2
-          }; return nil; })())) {
+          while ($truthy(($truthy(($ret_or_1 = cvar_scope)) ? (cvar_scope['$class_scope?']()['$!']()) : ($ret_or_1)))) {
             
             if ($truthy(cvar_scope['$sclass?']())) {
-              nesting_level = $rb_plus(nesting_level, 1)};
+              nesting_level = $rb_plus(nesting_level, 1)
+            };
             cvar_scope = cvar_scope.$parent();
           };
           return nesting_level;
-        }, $Base_class_variable_owner_nesting_level$44.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$class_variable_owner', $Base_class_variable_owner$45 = function $$class_variable_owner() {
+        $def(self, '$class_variable_owner', function $$class_variable_owner() {
           var self = this;
 
           if ($truthy(self.$scope())) {
-            return "" + "$nesting[" + (self.$class_variable_owner_nesting_level()) + "]"
+            return "" + (self.$scope().$nesting()) + "[" + (self.$class_variable_owner_nesting_level()) + "]"
           } else {
             return "Opal.Object"
           }
-        }, $Base_class_variable_owner$45.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$comments', $Base_comments$46 = function $$comments() {
+        $def(self, '$comments', function $$comments() {
           var self = this;
 
           return self.$compiler().$comments()['$[]'](self.sexp.$loc())
-        }, $Base_comments$46.$$arity = 0);
-        return (Opal.def(self, '$source_location', $Base_source_location$47 = function $$source_location() {
+        }, 0);
+        return $def(self, '$source_location', function $$source_location() {
           var self = this, file = nil, line = nil;
 
           
           file = self.sexp.$loc().$expression().$source_buffer().$name();
           if ($truthy(file['$start_with?']("corelib/"))) {
-            file = "" + "<internal:" + (file) + ">"};
+            file = "<internal:" + (file) + ">"
+          };
           if ($truthy(file['$end_with?'](".js"))) {
-            file = "" + "<js:" + (file) + ">"};
+            file = "<js:" + (file) + ">"
+          };
           line = self.sexp.$loc().$line();
-          return "" + "['" + (file) + "', " + (line) + "]";
-        }, $Base_source_location$47.$$arity = 0), nil) && 'source_location';
+          return "['" + (file) + "', " + (line) + "]";
+        }, 0);
       })($nesting[0], null, $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/literal"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_le(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs <= rhs : lhs['$<='](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $hash2 = Opal.hash2, $send = Opal.send, $lambda = Opal.lambda, $send2 = Opal.send2, $find_super = Opal.find_super, $slice = Opal.slice;
-
-  Opal.add_stubs(['$require', '$handle', '$push', '$to_s', '$type', '$children', '$value', '$recv?', '$wrap', '$freeze', '$join', '$keys', '$gsub', '$even?', '$length', '$last_match', '$+', '$chop', '$[]', '$inspect', '$to_i', '$to_utf16', '$translate_escape_chars', '$valid_encoding?', '$helper', '$upcase', '$<=', '$call', '$-', '$>>', '$&', '$attr_accessor', '$extract_flags_and_value', '$select!', '$flags', '$=~', '$warning', '$compiler', '$==', '$compile_static_regexp', '$compile_dynamic_regexp', '$each_with_index', '$zero?', '$expr', '$any?', '$===', '$new', '$map', '$to_proc', '$flags=', '$empty?', '$s', '$single_line?', '$value=', '$include?', '$is_a?', '$updated', '$delete', '$source', '$expression', '$loc', '$private', '$>', '$!=', '$!', '$regexp', '$each', '$compile_inline?', '$compile_inline', '$compile_range_initialize', '$start', '$finish', '$raise', '$expr_or_nil', '$numerator', '$denominator', '$real', '$imag']);
+Opal.modules["opal/nodes/literal"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $eqeq = Opal.eqeq, $def = Opal.def, $defs = Opal.defs, $truthy = Opal.truthy, $const_set = Opal.const_set, $hash2 = Opal.hash2, $regexp = Opal.regexp, $send = Opal.send, $rb_plus = Opal.rb_plus, $lambda = Opal.lambda, $rb_le = Opal.rb_le, $rb_minus = Opal.rb_minus, $send2 = Opal.send2, $find_super = Opal.find_super, $to_a = Opal.to_a, $eqeqeq = Opal.eqeqeq, $slice = Opal.slice, $Opal = Opal.Opal, $rb_gt = Opal.rb_gt;
+
+  Opal.add_stubs('require,handle,==,type,push,self,scope,to_s,children,value,recv?,wrap,freeze,join,keys,gsub,even?,length,last_match,+,chop,[],inspect,to_i,to_utf16,translate_escape_chars,valid_encoding?,helper,upcase,<=,call,-,>>,&,attr_accessor,extract_flags_and_value,select!,flags,=~,warning,compiler,compile_static_regexp,compile_dynamic_regexp,each_with_index,zero?,expr,any?,===,new,map,to_proc,flags=,empty?,s,single_line?,value=,include?,is_a?,updated,delete,source,expression,loc,private,>,!=,!,regexp,first,each,compile_inline?,compile_inline,compile_range_initialize,start,finish,raise,expr_or_nil,absolute_const,top_scope,numerator,denominator,real,imag');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -32482,38 +29305,39 @@ Opal.modules["opal/nodes/literal"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
-      (function($base, $super, $parent_nesting) {
+      (function($base, $super) {
         var self = $klass($base, $super, 'ValueNode');
 
-        var $nesting = [self].concat($parent_nesting), $ValueNode_compile$1, $ValueNode_truthy_optimize$ques$2;
-
+        
         
         self.$handle("true", "false", "self", "nil");
         
-        Opal.def(self, '$compile', $ValueNode_compile$1 = function $$compile() {
-          var self = this;
-
-          return self.$push(self.$type().$to_s())
-        }, $ValueNode_compile$1.$$arity = 0);
-        return (Opal.defs(self, '$truthy_optimize?', $ValueNode_truthy_optimize$ques$2 = function() {
+        $def(self, '$compile', function $$compile() {
           var self = this;
 
+          if ($eqeq(self.$type(), "self")) {
+            return self.$push(self.$scope().$self())
+          } else {
+            return self.$push(self.$type().$to_s())
+          }
+        }, 0);
+        return $defs(self, '$truthy_optimize?', function $ValueNode_truthy_optimize$ques$1() {
+          
           return true
-        }, $ValueNode_truthy_optimize$ques$2.$$arity = 0), nil) && 'truthy_optimize?';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'NumericNode');
 
-        var $nesting = [self].concat($parent_nesting), $NumericNode_compile$3, $NumericNode_truthy_optimize$ques$4;
-
+        
         
         self.$handle("int", "float");
         self.$children("value");
         
-        Opal.def(self, '$compile', $NumericNode_compile$3 = function $$compile() {
+        $def(self, '$compile', function $$compile() {
           var self = this;
 
           
@@ -32523,51 +29347,46 @@ Opal.modules["opal/nodes/literal"] = function(Opal) {
           } else {
             return nil
           };
-        }, $NumericNode_compile$3.$$arity = 0);
-        return (Opal.defs(self, '$truthy_optimize?', $NumericNode_truthy_optimize$ques$4 = function() {
-          var self = this;
-
+        }, 0);
+        return $defs(self, '$truthy_optimize?', function $NumericNode_truthy_optimize$ques$2() {
+          
           return true
-        }, $NumericNode_truthy_optimize$ques$4.$$arity = 0), nil) && 'truthy_optimize?';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
+        }, 0);
+      })($nesting[0], $$('Base'));
       (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'StringNode');
 
-        var $nesting = [self].concat($parent_nesting), $StringNode_translate_escape_chars$5, $StringNode_compile$7, $StringNode_to_utf16$9;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
         
         self.$handle("str");
         self.$children("value");
-        Opal.const_set($nesting[0], 'ESCAPE_CHARS', $hash2(["a", "e"], {"a": "\\u0007", "e": "\\u001b"}).$freeze());
-        Opal.const_set($nesting[0], 'ESCAPE_REGEX', Opal.regexp(["(\\\\+)([", $$($nesting, 'ESCAPE_CHARS').$keys().$join(""), "])"]).$freeze());
+        $const_set($nesting[0], 'ESCAPE_CHARS', $hash2(["a", "e"], {"a": "\\u0007", "e": "\\u001b"}).$freeze());
+        $const_set($nesting[0], 'ESCAPE_REGEX', $regexp(["(\\\\+)([", $$('ESCAPE_CHARS').$keys().$join(""), "])"]).$freeze());
         
-        Opal.def(self, '$translate_escape_chars', $StringNode_translate_escape_chars$5 = function $$translate_escape_chars(inspect_string) {
-          var $$6, self = this;
-
-          return $send(inspect_string, 'gsub', [$$($nesting, 'ESCAPE_REGEX')], ($$6 = function(original){var self = $$6.$$s == null ? this : $$6.$$s;
-
+        $def(self, '$translate_escape_chars', function $$translate_escape_chars(inspect_string) {
+          
+          return $send(inspect_string, 'gsub', [$$('ESCAPE_REGEX')], function $$3(original){
             
             
-            if (original == null) {
-              original = nil;
-            };
-            if ($truthy($$($nesting, 'Regexp').$last_match(1).$length()['$even?']())) {
+            if (original == null) original = nil;;
+            if ($truthy($$('Regexp').$last_match(1).$length()['$even?']())) {
               return original
             } else {
-              return $rb_plus($$($nesting, 'Regexp').$last_match(1).$chop(), $$($nesting, 'ESCAPE_CHARS')['$[]']($$($nesting, 'Regexp').$last_match(2)))
-            };}, $$6.$$s = self, $$6.$$arity = 1, $$6))
-        }, $StringNode_translate_escape_chars$5.$$arity = 1);
+              return $rb_plus($$('Regexp').$last_match(1).$chop(), $$('ESCAPE_CHARS')['$[]']($$('Regexp').$last_match(2)))
+            };}, 1)
+        }, 1);
         
-        Opal.def(self, '$compile', $StringNode_compile$7 = function $$compile() {
-          var $$8, self = this, string_value = nil, sanitized_value = nil;
+        $def(self, '$compile', function $$compile() {
+          var self = this, string_value = nil, sanitized_value = nil;
 
           
           string_value = self.$value();
-          sanitized_value = $send(string_value.$inspect(), 'gsub', [/\\u\{([0-9a-f]+)\}/], ($$8 = function(){var self = $$8.$$s == null ? this : $$8.$$s, code_point = nil;
+          sanitized_value = $send(string_value.$inspect(), 'gsub', [/\\u\{([0-9a-f]+)\}/], function $$4(){var self = $$4.$$s == null ? this : $$4.$$s, code_point = nil;
 
             
-            code_point = $$($nesting, 'Regexp').$last_match(1).$to_i(16);
-            return self.$to_utf16(code_point);}, $$8.$$s = self, $$8.$$arity = 0, $$8));
+            code_point = $$('Regexp').$last_match(1).$to_i(16);
+            return self.$to_utf16(code_point);}, {$$arity: 0, $$s: self});
           self.$push(self.$translate_escape_chars(sanitized_value));
           nil;
           if ($truthy(self.$value()['$valid_encoding?']())) {
@@ -32577,247 +29396,232 @@ Opal.modules["opal/nodes/literal"] = function(Opal) {
             self.$helper("binary");
             return self.$wrap("$binary(", ")");
           };
-        }, $StringNode_compile$7.$$arity = 0);
-        return (Opal.def(self, '$to_utf16', $StringNode_to_utf16$9 = function $$to_utf16(code_point) {
-          var $$10, self = this, ten_bits = nil, u = nil, lead_surrogate = nil, tail_surrogate = nil;
+        }, 0);
+        return $def(self, '$to_utf16', function $$to_utf16(code_point) {
+          var ten_bits = nil, u = nil, lead_surrogate = nil, tail_surrogate = nil;
 
           
           ten_bits = 1023;
-          u = $lambda(($$10 = function(code_unit){var self = $$10.$$s == null ? this : $$10.$$s;
-
+          u = $lambda(function $$5(code_unit){
             
             
-            if (code_unit == null) {
-              code_unit = nil;
-            };
-            return $rb_plus("\\u", code_unit.$to_s(16).$upcase());}, $$10.$$s = self, $$10.$$arity = 1, $$10));
+            if (code_unit == null) code_unit = nil;;
+            return $rb_plus("\\u", code_unit.$to_s(16).$upcase());}, 1);
           if ($truthy($rb_le(code_point, 65535))) {
-            return u.$call(code_point)};
+            return u.$call(code_point)
+          };
           code_point = $rb_minus(code_point, 65536);
           lead_surrogate = $rb_plus(55296, code_point['$>>'](10));
           tail_surrogate = $rb_plus(56320, code_point['$&'](ten_bits));
           return $rb_plus(u.$call(lead_surrogate), u.$call(tail_surrogate));
-        }, $StringNode_to_utf16$9.$$arity = 1), nil) && 'to_utf16';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 1);
+      })($nesting[0], $$('Base'), $nesting);
+      (function($base, $super) {
         var self = $klass($base, $super, 'SymbolNode');
 
-        var $nesting = [self].concat($parent_nesting), $SymbolNode_compile$11;
-
+        
         
         self.$handle("sym");
         self.$children("value");
-        return (Opal.def(self, '$compile', $SymbolNode_compile$11 = function $$compile() {
+        return $def(self, '$compile', function $$compile() {
           var self = this;
 
           return self.$push(self.$value().$to_s().$inspect())
-        }, $SymbolNode_compile$11.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
+        }, 0);
+      })($nesting[0], $$('Base'));
       (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'RegexpNode');
 
-        var $nesting = [self].concat($parent_nesting), $RegexpNode_initialize$12, $RegexpNode_compile$13, $RegexpNode_compile_dynamic_regexp$15, $RegexpNode_compile_static_regexp$17, $RegexpNode_extract_flags_and_value$18, $RegexpNode_raw_value$20, $RegexpNode_single_line$ques$21;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.sexp = nil;
+        $proto.sexp = nil;
         
         self.$handle("regexp");
         self.$attr_accessor("value", "flags");
-        Opal.const_set($nesting[0], 'SUPPORTED_FLAGS', /[gimuy]/.$freeze());
+        $const_set($nesting[0], 'SUPPORTED_FLAGS', /[gimuy]/.$freeze());
         
-        Opal.def(self, '$initialize', $RegexpNode_initialize$12 = function $$initialize($a) {
-          var $post_args, $iter = $RegexpNode_initialize$12.$$p, $yield = $iter || nil, self = this, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        $def(self, '$initialize', function $$initialize($a) {
+          var $post_args, $rest_arg, $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $RegexpNode_initialize$12.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$initialize.$$p;
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
-          ;
-          $send2(self, $find_super(self, 'initialize', $RegexpNode_initialize$12, false, true), 'initialize', $zuper, $iter);
+          $post_args = Opal.slice.call(arguments);
+          
+          $rest_arg = $post_args;;
+          $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', $to_a($rest_arg), $yield);
           return self.$extract_flags_and_value();
-        }, $RegexpNode_initialize$12.$$arity = -1);
+        }, -1);
         
-        Opal.def(self, '$compile', $RegexpNode_compile$13 = function $$compile() {
-          var $$14, self = this;
+        $def(self, '$compile', function $$compile() {
+          var self = this;
 
           
-          $send(self.$flags(), 'select!', [], ($$14 = function(flag){var self = $$14.$$s == null ? this : $$14.$$s;
+          $send(self.$flags(), 'select!', [], function $$6(flag){var self = $$6.$$s == null ? this : $$6.$$s;
 
             
             
-            if (flag == null) {
-              flag = nil;
-            };
-            if ($truthy($$($nesting, 'SUPPORTED_FLAGS')['$=~'](flag))) {
+            if (flag == null) flag = nil;;
+            if ($truthy($$('SUPPORTED_FLAGS')['$=~'](flag))) {
               return true
             } else {
               
-              self.$compiler().$warning("" + "Skipping the '" + (flag) + "' Regexp flag as it's not widely supported by JavaScript vendors.");
+              self.$compiler().$warning("Skipping the '" + (flag) + "' Regexp flag as it's not widely supported by JavaScript vendors.");
               return false;
-            };}, $$14.$$s = self, $$14.$$arity = 1, $$14));
-          if (self.$value().$type()['$==']("str")) {
+            };}, {$$arity: 1, $$s: self});
+          if ($eqeq(self.$value().$type(), "str")) {
             return self.$compile_static_regexp()
           } else {
             return self.$compile_dynamic_regexp()
           };
-        }, $RegexpNode_compile$13.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_dynamic_regexp', $RegexpNode_compile_dynamic_regexp$15 = function $$compile_dynamic_regexp() {
-          var $$16, self = this;
+        $def(self, '$compile_dynamic_regexp', function $$compile_dynamic_regexp() {
+          var self = this;
 
           
-          self.$push("Opal.regexp([");
-          $send(self.$value().$children(), 'each_with_index', [], ($$16 = function(v, index){var self = $$16.$$s == null ? this : $$16.$$s;
+          self.$helper("regexp");
+          self.$push("$regexp([");
+          $send(self.$value().$children(), 'each_with_index', [], function $$7(v, index){var self = $$7.$$s == null ? this : $$7.$$s;
 
             
             
-            if (v == null) {
-              v = nil;
-            };
+            if (v == null) v = nil;;
             
-            if (index == null) {
-              index = nil;
-            };
-            if ($truthy(index['$zero?']())) {
-            } else {
+            if (index == null) index = nil;;
+            if (!$truthy(index['$zero?']())) {
               self.$push(", ")
             };
-            return self.$push(self.$expr(v));}, $$16.$$s = self, $$16.$$arity = 2, $$16));
+            return self.$push(self.$expr(v));}, {$$arity: 2, $$s: self});
           self.$push("]");
           if ($truthy(self.$flags()['$any?']())) {
-            self.$push("" + ", '" + (self.$flags().$join()) + "'")};
+            self.$push(", '" + (self.$flags().$join()) + "'")
+          };
           return self.$push(")");
-        }, $RegexpNode_compile_dynamic_regexp$15.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_static_regexp', $RegexpNode_compile_static_regexp$17 = function $$compile_static_regexp() {
-          var self = this, value = nil, $case = nil;
+        $def(self, '$compile_static_regexp', function $$compile_static_regexp() {
+          var self = this, value = nil, $ret_or_1 = nil;
 
           
           value = self.$value().$children()['$[]'](0);
-          return (function() {$case = value;
-          if (""['$===']($case)) {return self.$push("/(?:)/")}
-          else {return self.$push("" + ($$($nesting, 'Regexp').$new(value).$inspect()) + (self.$flags().$join()))}})();
-        }, $RegexpNode_compile_static_regexp$17.$$arity = 0);
+          if ($eqeqeq("", ($ret_or_1 = value))) {
+            return self.$push("/(?:)/")
+          } else {
+            return self.$push("" + ($$('Regexp').$new(value).$inspect()) + (self.$flags().$join()))
+          };
+        }, 0);
         
-        Opal.def(self, '$extract_flags_and_value', $RegexpNode_extract_flags_and_value$18 = function $$extract_flags_and_value() {
-          var $a, $b, $$19, self = this, values = nil, flags_sexp = nil, $writer = nil, parts = nil;
+        $def(self, '$extract_flags_and_value', function $$extract_flags_and_value() {
+          var $a, $b, self = this, values = nil, flags_sexp = nil, $writer = nil, parts = nil;
 
           
-          $a = [].concat(Opal.to_a(self.$children())), $b = $a.length - 1, $b = ($b < 0) ? 0 : $b, (values = $slice.call($a, 0, $b)), (flags_sexp = ($a[$b] == null ? nil : $a[$b])), $a;
+          $a = [].concat($to_a(self.$children())), $b = $a.length - 1, $b = ($b < 0) ? 0 : $b, (values = $slice.call($a, 0, $b)), (flags_sexp = ($a[$b] == null ? nil : $a[$b])), $a;
           
           $writer = [$send(flags_sexp.$children(), 'map', [], "to_s".$to_proc())];
-          $send(self, 'flags=', Opal.to_a($writer));
+          $send(self, 'flags=', $to_a($writer));
           $writer[$rb_minus($writer["length"], 1)];;
           
-          $writer = [(function() {if ($truthy(values['$empty?']())) {
-            return self.$s("str", "")
-          } else if ($truthy(self['$single_line?'](values))) {
-            return values['$[]'](0)
-          } else {
-            return $send(self, 's', ["dstr"].concat(Opal.to_a(values)))
-          }; return nil; })()];
-          $send(self, 'value=', Opal.to_a($writer));
+          $writer = [($truthy(values['$empty?']()) ? (self.$s("str", "")) : ($truthy(self['$single_line?'](values)) ? (values['$[]'](0)) : ($send(self, 's', ["dstr"].concat($to_a(values))))))];
+          $send(self, 'value=', $to_a($writer));
           $writer[$rb_minus($writer["length"], 1)];;
           if ($truthy(self.$flags()['$include?']("x"))) {
             
-            parts = $send(self.$value().$children(), 'map', [], ($$19 = function(part){var self = $$19.$$s == null ? this : $$19.$$s, $ret_or_1 = nil, trimmed_value = nil;
+            parts = $send(self.$value().$children(), 'map', [], function $$8(part){var self = $$8.$$s == null ? this : $$8.$$s, trimmed_value = nil;
 
               
               
-              if (part == null) {
-                part = nil;
-              };
-              if ($truthy((function() {if ($truthy(($ret_or_1 = part['$is_a?']($$$($$$($$$('::', 'Opal'), 'AST'), 'Node'))))) {
-                return part.$type()['$==']("str")
-              } else {
-                return $ret_or_1
-              }; return nil; })())) {
+              if (part == null) part = nil;;
+              if (($truthy(part['$is_a?']($$$($$$($Opal, 'AST'), 'Node'))) && ($eqeq(part.$type(), "str")))) {
                 
                 trimmed_value = part.$children()['$[]'](0).$gsub(/^\s*\#.*/, "").$gsub(/\s/, "");
                 return self.$s("str", trimmed_value);
               } else {
                 return part
-              };}, $$19.$$s = self, $$19.$$arity = 1, $$19));
+              };}, {$$arity: 1, $$s: self});
             
             $writer = [self.$value().$updated(nil, parts)];
-            $send(self, 'value=', Opal.to_a($writer));
+            $send(self, 'value=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
-            self.$flags().$delete("x");};
-          if (self.$value().$type()['$==']("str")) {
+            self.$flags().$delete("x");
+          };
+          if ($eqeq(self.$value().$type(), "str")) {
             
             $writer = [self.$s("str", self.$value().$children()['$[]'](0).$gsub("\\A", "^").$gsub("\\z", "$"))];
-            $send(self, 'value=', Opal.to_a($writer));
+            $send(self, 'value=', $to_a($writer));
             return $writer[$rb_minus($writer["length"], 1)];
           } else {
             return nil
           };
-        }, $RegexpNode_extract_flags_and_value$18.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$raw_value', $RegexpNode_raw_value$20 = function $$raw_value() {
+        $def(self, '$raw_value', function $$raw_value() {
           var self = this, $writer = nil;
 
           
           $writer = [self.sexp.$loc().$expression().$source()];
-          $send(self, 'value=', Opal.to_a($writer));
+          $send(self, 'value=', $to_a($writer));
           return $writer[$rb_minus($writer["length"], 1)];
-        }, $RegexpNode_raw_value$20.$$arity = 0);
+        }, 0);
         self.$private();
-        return (Opal.def(self, '$single_line?', $RegexpNode_single_line$ques$21 = function(values) {
-          var self = this, value = nil, $ret_or_2 = nil;
+        return $def(self, '$single_line?', function $RegexpNode_single_line$ques$9(values) {
+          var value = nil, $ret_or_1 = nil;
 
           
           if ($truthy($rb_gt(values.$length(), 1))) {
-            return false};
+            return false
+          };
           value = values['$[]'](0);
-          if ($truthy(($ret_or_2 = value.$type()['$!=']("str")))) {
-            return $ret_or_2
+          if ($truthy(($ret_or_1 = value.$type()['$!=']("str")))) {
+            return $ret_or_1
           } else {
             return value.$children()['$[]'](0)['$include?']("\n")['$!']()
           };
-        }, $RegexpNode_single_line$ques$21.$$arity = 1), nil) && 'single_line?';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 1);
+      })($nesting[0], $$('Base'), $nesting);
+      (function($base, $super) {
         var self = $klass($base, $super, 'MatchCurrentLineNode');
 
-        var $nesting = [self].concat($parent_nesting), $MatchCurrentLineNode_compile$22;
-
+        
         
         self.$handle("match_current_line");
         self.$children("regexp");
-        return (Opal.def(self, '$compile', $MatchCurrentLineNode_compile$22 = function $$compile() {
+        return $def(self, '$compile', function $$compile() {
           var self = this, gvar_sexp = nil, send_node = nil;
 
           
           gvar_sexp = self.$s("gvar", "$_");
           send_node = self.$s("send", gvar_sexp, "=~", self.$regexp());
           return self.$push(self.$expr(send_node));
-        }, $MatchCurrentLineNode_compile$22.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'DynamicStringNode');
 
-        var $nesting = [self].concat($parent_nesting), $DynamicStringNode_compile$23;
-
+        
         
         self.$handle("dstr");
-        return (Opal.def(self, '$compile', $DynamicStringNode_compile$23 = function $$compile() {
-          var $$24, self = this;
+        return $def(self, '$compile', function $$compile() {
+          var self = this, skip_empty = nil;
 
           
-          self.$push("\"\"");
-          return $send(self.$children(), 'each', [], ($$24 = function(part){var self = $$24.$$s == null ? this : $$24.$$s;
+          if (($truthy($rb_gt(self.$children().$length(), 1)) && ($eqeq(self.$children().$first().$type(), "str")))) {
+            skip_empty = true
+          } else {
+            self.$push("\"\"")
+          };
+          return $send(self.$children(), 'each', [], function $$10(part){var self = $$10.$$s == null ? this : $$10.$$s;
 
             
             
-            if (part == null) {
-              part = nil;
+            if (part == null) part = nil;;
+            if ($truthy(skip_empty)) {
+              skip_empty = false
+            } else {
+              self.$push(" + ")
             };
-            self.$push(" + ");
-            if (part.$type()['$==']("str")) {
-              self.$push(part.$children()['$[]'](0).$inspect())
+            if ($eqeq(part.$type(), "str")) {
+              self.$push(self.$expr(part))
             } else {
               self.$push("(", self.$expr(part), ")")
             };
@@ -32825,26 +29629,25 @@ Opal.modules["opal/nodes/literal"] = function(Opal) {
               return self.$wrap("(", ")")
             } else {
               return nil
-            };}, $$24.$$s = self, $$24.$$arity = 1, $$24));
-        }, $DynamicStringNode_compile$23.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+            };}, {$$arity: 1, $$s: self});
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'DynamicSymbolNode');
 
-        var $nesting = [self].concat($parent_nesting);
-
+        
         return self.$handle("dsym")
-      })($nesting[0], $$($nesting, 'DynamicStringNode'), $nesting);
+      })($nesting[0], $$('DynamicStringNode'));
       (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'RangeNode');
 
-        var $nesting = [self].concat($parent_nesting), $RangeNode_compile$25, $RangeNode_compile_inline$ques$26, $RangeNode_compile_inline$27, $RangeNode_compile_range_initialize$28;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
         
         self.$children("start", "finish");
-        Opal.const_set($nesting[0], 'SIMPLE_CHILDREN_TYPES', ["int", "float", "str", "sym"].$freeze());
+        $const_set($nesting[0], 'SIMPLE_CHILDREN_TYPES', ["int", "float", "str", "sym"].$freeze());
         
-        Opal.def(self, '$compile', $RangeNode_compile$25 = function $$compile() {
+        $def(self, '$compile', function $$compile() {
           var self = this;
 
           if ($truthy(self['$compile_inline?']())) {
@@ -32854,123 +29657,109 @@ Opal.modules["opal/nodes/literal"] = function(Opal) {
           } else {
             return self.$compile_range_initialize()
           }
-        }, $RangeNode_compile$25.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_inline?', $RangeNode_compile_inline$ques$26 = function() {
-          var self = this, $ret_or_3 = nil, $ret_or_4 = nil, $ret_or_5 = nil, $ret_or_6 = nil, $ret_or_7 = nil;
+        $def(self, '$compile_inline?', function $RangeNode_compile_inline$ques$11() {
+          var self = this, $ret_or_1 = nil, $ret_or_2 = nil, $ret_or_3 = nil;
 
-          if ($truthy(($ret_or_3 = (function() {if ($truthy(($ret_or_4 = self.$start()['$!']()))) {
-            return $ret_or_4
-          } else {
-            
-            if ($truthy(($ret_or_5 = self.$start().$type()))) {
-              return $$($nesting, 'SIMPLE_CHILDREN_TYPES')['$include?'](self.$start().$type())
-            } else {
-              return $ret_or_5
-            };
-          }; return nil; })()))) {
+          if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = self.$start()['$!']())) ? ($ret_or_2) : (($truthy(($ret_or_3 = self.$start().$type())) ? ($$('SIMPLE_CHILDREN_TYPES')['$include?'](self.$start().$type())) : ($ret_or_3))))))) {
             
-            if ($truthy(($ret_or_6 = self.$finish()['$!']()))) {
-              return $ret_or_6
+            if ($truthy(($ret_or_2 = self.$finish()['$!']()))) {
+              return $ret_or_2
             } else {
               
-              if ($truthy(($ret_or_7 = self.$finish().$type()))) {
-                return $$($nesting, 'SIMPLE_CHILDREN_TYPES')['$include?'](self.$finish().$type())
+              if ($truthy(($ret_or_3 = self.$finish().$type()))) {
+                return $$('SIMPLE_CHILDREN_TYPES')['$include?'](self.$finish().$type())
               } else {
-                return $ret_or_7
+                return $ret_or_3
               };
             };
           } else {
-            return $ret_or_3
+            return $ret_or_1
           }
-        }, $RangeNode_compile_inline$ques$26.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_inline', $RangeNode_compile_inline$27 = function $$compile_inline() {
+        $def(self, '$compile_inline', function $$compile_inline() {
           var self = this;
 
-          return self.$raise($$($nesting, 'NotImplementedError'))
-        }, $RangeNode_compile_inline$27.$$arity = 0);
-        return (Opal.def(self, '$compile_range_initialize', $RangeNode_compile_range_initialize$28 = function $$compile_range_initialize() {
+          return self.$raise($$('NotImplementedError'))
+        }, 0);
+        return $def(self, '$compile_range_initialize', function $$compile_range_initialize() {
           var self = this;
 
-          return self.$raise($$($nesting, 'NotImplementedError'))
-        }, $RangeNode_compile_range_initialize$28.$$arity = 0), nil) && 'compile_range_initialize';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+          return self.$raise($$('NotImplementedError'))
+        }, 0);
+      })($nesting[0], $$('Base'), $nesting);
+      (function($base, $super) {
         var self = $klass($base, $super, 'InclusiveRangeNode');
 
-        var $nesting = [self].concat($parent_nesting), $InclusiveRangeNode_compile_inline$29, $InclusiveRangeNode_compile_range_initialize$30;
-
+        
         
         self.$handle("irange");
         
-        Opal.def(self, '$compile_inline', $InclusiveRangeNode_compile_inline$29 = function $$compile_inline() {
+        $def(self, '$compile_inline', function $$compile_inline() {
           var self = this;
 
           return self.$push("$range(", self.$expr_or_nil(self.$start()), ", ", self.$expr_or_nil(self.$finish()), ", false)")
-        }, $InclusiveRangeNode_compile_inline$29.$$arity = 0);
-        return (Opal.def(self, '$compile_range_initialize', $InclusiveRangeNode_compile_range_initialize$30 = function $$compile_range_initialize() {
+        }, 0);
+        return $def(self, '$compile_range_initialize', function $$compile_range_initialize() {
           var self = this;
 
           return self.$push("Opal.Range.$new(", self.$expr_or_nil(self.$start()), ", ", self.$expr_or_nil(self.$finish()), ", false)")
-        }, $InclusiveRangeNode_compile_range_initialize$30.$$arity = 0), nil) && 'compile_range_initialize';
-      })($nesting[0], $$($nesting, 'RangeNode'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('RangeNode'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'ExclusiveRangeNode');
 
-        var $nesting = [self].concat($parent_nesting), $ExclusiveRangeNode_compile_inline$31, $ExclusiveRangeNode_compile_range_initialize$32;
-
+        
         
         self.$handle("erange");
         
-        Opal.def(self, '$compile_inline', $ExclusiveRangeNode_compile_inline$31 = function $$compile_inline() {
+        $def(self, '$compile_inline', function $$compile_inline() {
           var self = this;
 
           return self.$push("$range(", self.$expr_or_nil(self.$start()), ", ", self.$expr_or_nil(self.$finish()), ", true)")
-        }, $ExclusiveRangeNode_compile_inline$31.$$arity = 0);
-        return (Opal.def(self, '$compile_range_initialize', $ExclusiveRangeNode_compile_range_initialize$32 = function $$compile_range_initialize() {
+        }, 0);
+        return $def(self, '$compile_range_initialize', function $$compile_range_initialize() {
           var self = this;
 
           return self.$push("Opal.Range.$new(", self.$expr_or_nil(self.$start()), ",", self.$expr_or_nil(self.$finish()), ", true)")
-        }, $ExclusiveRangeNode_compile_range_initialize$32.$$arity = 0), nil) && 'compile_range_initialize';
-      })($nesting[0], $$($nesting, 'RangeNode'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('RangeNode'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'RationalNode');
 
-        var $nesting = [self].concat($parent_nesting), $RationalNode_compile$33;
-
+        
         
         self.$handle("rational");
         self.$children("value");
-        return (Opal.def(self, '$compile', $RationalNode_compile$33 = function $$compile() {
+        return $def(self, '$compile', function $$compile() {
           var self = this;
 
-          return self.$push("" + "Opal.Rational.$new(" + (self.$value().$numerator()) + ", " + (self.$value().$denominator()) + ")")
-        }, $RationalNode_compile$33.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      return (function($base, $super, $parent_nesting) {
+          return self.$push("" + (self.$top_scope().$absolute_const()) + "('Rational').$new(" + (self.$value().$numerator()) + ", " + (self.$value().$denominator()) + ")")
+        }, 0);
+      })($nesting[0], $$('Base'));
+      return (function($base, $super) {
         var self = $klass($base, $super, 'ComplexNode');
 
-        var $nesting = [self].concat($parent_nesting), $ComplexNode_compile$34;
-
+        
         
         self.$handle("complex");
         self.$children("value");
-        return (Opal.def(self, '$compile', $ComplexNode_compile$34 = function $$compile() {
+        return $def(self, '$compile', function $$compile() {
           var self = this;
 
-          return self.$push("" + "Opal.Complex.$new(" + (self.$value().$real()) + ", " + (self.$value().$imag()) + ")")
-        }, $ComplexNode_compile$34.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
+          return self.$push("" + (self.$top_scope().$absolute_const()) + "('Complex').$new(" + (self.$value().$real()) + ", " + (self.$value().$imag()) + ")")
+        }, 0);
+      })($nesting[0], $$('Base'));
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/variables"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send, $range = Opal.range, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["opal/nodes/variables"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $def = Opal.def, $send = Opal.send, $range = Opal.range, $eqeqeq = Opal.eqeqeq, $send2 = Opal.send2, $find_super = Opal.find_super;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$irb?', '$compiler', '$top?', '$scope', '$using_irb?', '$push', '$to_s', '$var_name', '$with_temp', '$property', '$wrap', '$add_local', '$expr', '$value', '$recv?', '$expr?', '$[]', '$name', '$add_ivar', '$helper', '$add_gvar', '$===', '$handle_global_match', '$handle_post_match', '$handle_pre_match', '$raise', '$index', '$stmt?', '$class_variable_owner', '$inspect']);
+  Opal.add_stubs('require,handle,children,irb?,compiler,top?,scope,using_irb?,push,to_s,var_name,with_temp,property,wrap,add_local,expr,value,expr?,recv?,[],name,add_ivar,self,helper,add_gvar,===,handle_global_match,handle_post_match,handle_pre_match,raise,index,stmt?,class_variable_owner,inspect');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -32981,19 +29770,18 @@ Opal.modules["opal/nodes/variables"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
-      (function($base, $super, $parent_nesting) {
+      (function($base, $super) {
         var self = $klass($base, $super, 'LocalVariableNode');
 
-        var $nesting = [self].concat($parent_nesting), $LocalVariableNode_using_irb$ques$1, $LocalVariableNode_compile$2;
-
+        
         
         self.$handle("lvar");
         self.$children("var_name");
         
-        Opal.def(self, '$using_irb?', $LocalVariableNode_using_irb$ques$1 = function() {
+        $def(self, '$using_irb?', function $LocalVariableNode_using_irb$ques$1() {
           var self = this, $ret_or_1 = nil;
 
           if ($truthy(($ret_or_1 = self.$compiler()['$irb?']()))) {
@@ -33001,338 +29789,295 @@ Opal.modules["opal/nodes/variables"] = function(Opal) {
           } else {
             return $ret_or_1
           }
-        }, $LocalVariableNode_using_irb$ques$1.$$arity = 0);
-        return (Opal.def(self, '$compile', $LocalVariableNode_compile$2 = function $$compile() {
-          var $$3, self = this;
+        }, 0);
+        return $def(self, '$compile', function $$compile() {
+          var self = this;
 
           
-          if ($truthy(self['$using_irb?']())) {
-          } else {
+          if (!$truthy(self['$using_irb?']())) {
             return self.$push(self.$var_name().$to_s())
           };
-          return $send(self, 'with_temp', [], ($$3 = function(tmp){var self = $$3.$$s == null ? this : $$3.$$s;
+          return $send(self, 'with_temp', [], function $$2(tmp){var self = $$2.$$s == null ? this : $$2.$$s;
 
             
             
-            if (tmp == null) {
-              tmp = nil;
-            };
+            if (tmp == null) tmp = nil;;
             self.$push(self.$property(self.$var_name().$to_s()));
-            return self.$wrap("" + "((" + (tmp) + " = Opal.irb_vars", "" + ") == null ? nil : " + (tmp) + ")");}, $$3.$$s = self, $$3.$$arity = 1, $$3));
-        }, $LocalVariableNode_compile$2.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+            return self.$wrap("((" + (tmp) + " = Opal.irb_vars", ") == null ? nil : " + (tmp) + ")");}, {$$arity: 1, $$s: self});
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'LocalAssignNode');
 
-        var $nesting = [self].concat($parent_nesting), $LocalAssignNode_using_irb$ques$4, $LocalAssignNode_compile$5;
-
+        
         
         self.$handle("lvasgn");
         self.$children("var_name", "value");
         
-        Opal.def(self, '$using_irb?', $LocalAssignNode_using_irb$ques$4 = function() {
-          var self = this, $ret_or_2 = nil;
+        $def(self, '$using_irb?', function $LocalAssignNode_using_irb$ques$3() {
+          var self = this, $ret_or_1 = nil;
 
-          if ($truthy(($ret_or_2 = self.$compiler()['$irb?']()))) {
+          if ($truthy(($ret_or_1 = self.$compiler()['$irb?']()))) {
             return self.$scope()['$top?']()
           } else {
-            return $ret_or_2
+            return $ret_or_1
           }
-        }, $LocalAssignNode_using_irb$ques$4.$$arity = 0);
-        return (Opal.def(self, '$compile', $LocalAssignNode_compile$5 = function $$compile() {
-          var self = this, $ret_or_3 = nil, $ret_or_4 = nil;
+        }, 0);
+        return $def(self, '$compile', function $$compile() {
+          var self = this;
 
           
           if ($truthy(self['$using_irb?']())) {
-            self.$push("" + "Opal.irb_vars" + (self.$property(self.$var_name().$to_s())) + " = ")
+            self.$push("Opal.irb_vars" + (self.$property(self.$var_name().$to_s())) + " = ")
           } else {
             
             self.$add_local(self.$var_name().$to_s());
             self.$push("" + (self.$var_name()) + " = ");
           };
           self.$push(self.$expr(self.$value()));
-          if ($truthy((function() {if ($truthy(($ret_or_3 = (function() {if ($truthy(($ret_or_4 = self['$recv?']()))) {
-            return $ret_or_4
-          } else {
-            return self['$expr?']()
-          }; return nil; })()))) {
-            return self.$value()
-          } else {
-            return $ret_or_3
-          }; return nil; })())) {
+          if ((($truthy(self['$recv?']()) || ($truthy(self['$expr?']()))) && ($truthy(self.$value())))) {
             return self.$wrap("(", ")")
           } else {
             return nil
           };
-        }, $LocalAssignNode_compile$5.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'LocalDeclareNode');
 
-        var $nesting = [self].concat($parent_nesting), $LocalDeclareNode_compile$6;
-
+        
         
         self.$handle("lvdeclare");
         self.$children("var_name");
-        return (Opal.def(self, '$compile', $LocalDeclareNode_compile$6 = function $$compile() {
+        return $def(self, '$compile', function $$compile() {
           var self = this;
 
           
           self.$add_local(self.$var_name().$to_s());
           return nil;
-        }, $LocalDeclareNode_compile$6.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'InstanceVariableNode');
 
-        var $nesting = [self].concat($parent_nesting), $InstanceVariableNode_var_name$7, $InstanceVariableNode_compile$8;
-
+        
         
         self.$handle("ivar");
         self.$children("name");
         
-        Opal.def(self, '$var_name', $InstanceVariableNode_var_name$7 = function $$var_name() {
+        $def(self, '$var_name', function $$var_name() {
           var self = this;
 
           return self.$name().$to_s()['$[]']($range(1, -1, false))
-        }, $InstanceVariableNode_var_name$7.$$arity = 0);
-        return (Opal.def(self, '$compile', $InstanceVariableNode_compile$8 = function $$compile() {
+        }, 0);
+        return $def(self, '$compile', function $$compile() {
           var self = this, name = nil;
 
           
           name = self.$property(self.$var_name());
           self.$add_ivar(name);
-          return self.$push("" + "self" + (name));
-        }, $InstanceVariableNode_compile$8.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+          return self.$push("" + (self.$scope().$self()) + (name));
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'InstanceAssignNode');
 
-        var $nesting = [self].concat($parent_nesting), $InstanceAssignNode_var_name$9, $InstanceAssignNode_compile$10;
-
+        
         
         self.$handle("ivasgn");
         self.$children("name", "value");
         
-        Opal.def(self, '$var_name', $InstanceAssignNode_var_name$9 = function $$var_name() {
+        $def(self, '$var_name', function $$var_name() {
           var self = this;
 
           return self.$name().$to_s()['$[]']($range(1, -1, false))
-        }, $InstanceAssignNode_var_name$9.$$arity = 0);
-        return (Opal.def(self, '$compile', $InstanceAssignNode_compile$10 = function $$compile() {
-          var self = this, name = nil, $ret_or_5 = nil, $ret_or_6 = nil;
+        }, 0);
+        return $def(self, '$compile', function $$compile() {
+          var self = this, name = nil;
 
           
           name = self.$property(self.$var_name());
-          self.$push("" + "self" + (name) + " = ");
+          self.$push("" + (self.$scope().$self()) + (name) + " = ");
           self.$push(self.$expr(self.$value()));
-          if ($truthy((function() {if ($truthy(($ret_or_5 = (function() {if ($truthy(($ret_or_6 = self['$recv?']()))) {
-            return $ret_or_6
-          } else {
-            return self['$expr?']()
-          }; return nil; })()))) {
-            return self.$value()
-          } else {
-            return $ret_or_5
-          }; return nil; })())) {
+          if ((($truthy(self['$recv?']()) || ($truthy(self['$expr?']()))) && ($truthy(self.$value())))) {
             return self.$wrap("(", ")")
           } else {
             return nil
           };
-        }, $InstanceAssignNode_compile$10.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'GlobalVariableNode');
 
-        var $nesting = [self].concat($parent_nesting), $GlobalVariableNode_var_name$11, $GlobalVariableNode_compile$12;
-
+        
         
         self.$handle("gvar");
         self.$children("name");
         
-        Opal.def(self, '$var_name', $GlobalVariableNode_var_name$11 = function $$var_name() {
+        $def(self, '$var_name', function $$var_name() {
           var self = this;
 
           return self.$name().$to_s()['$[]']($range(1, -1, false))
-        }, $GlobalVariableNode_var_name$11.$$arity = 0);
-        return (Opal.def(self, '$compile', $GlobalVariableNode_compile$12 = function $$compile() {
+        }, 0);
+        return $def(self, '$compile', function $$compile() {
           var self = this, name = nil;
 
           
           self.$helper("gvars");
           name = self.$property(self.$var_name());
           self.$add_gvar(name);
-          return self.$push("" + "$gvars" + (name));
-        }, $GlobalVariableNode_compile$12.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
+          return self.$push("$gvars" + (name));
+        }, 0);
+      })($nesting[0], $$('Base'));
       (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'BackRefNode');
 
-        var $nesting = [self].concat($parent_nesting), $BackRefNode_compile$13, $BackRefNode_handle_global_match$14, $BackRefNode_handle_pre_match$16, $BackRefNode_handle_post_match$18;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
         
         self.$handle("back_ref");
         
-        Opal.def(self, '$compile', $BackRefNode_compile$13 = function $$compile() {
-          var $iter = $BackRefNode_compile$13.$$p, $yield = $iter || nil, self = this, $case = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        $def(self, '$compile', function $$compile() {
+          var $yield = $$compile.$$p || nil, self = this, $ret_or_1 = nil;
 
-          if ($iter) $BackRefNode_compile$13.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$compile.$$p;
           
           self.$helper("gvars");
-          return (function() {$case = self.$var_name();
-          if ("&"['$===']($case)) {return self.$handle_global_match()}
-          else if ("'"['$===']($case)) {return self.$handle_post_match()}
-          else if ("`"['$===']($case)) {return self.$handle_pre_match()}
-          else if ("+"['$===']($case)) {return $send2(self, $find_super(self, 'compile', $BackRefNode_compile$13, false, true), 'compile', $zuper, $iter)}
-          else {return self.$raise($$($nesting, 'NotImplementedError'))}})();
-        }, $BackRefNode_compile$13.$$arity = 0);
+          if ($eqeqeq("&", ($ret_or_1 = self.$var_name()))) {
+            return self.$handle_global_match()
+          } else if ($eqeqeq("'", $ret_or_1)) {
+            return self.$handle_post_match()
+          } else if ($eqeqeq("`", $ret_or_1)) {
+            return self.$handle_pre_match()
+          } else if ($eqeqeq("+", $ret_or_1)) {
+            return $send2(self, $find_super(self, 'compile', $$compile, false, true), 'compile', [], $yield)
+          } else {
+            return self.$raise($$('NotImplementedError'))
+          };
+        }, 0);
         
-        Opal.def(self, '$handle_global_match', $BackRefNode_handle_global_match$14 = function $$handle_global_match() {
-          var $$15, self = this;
+        $def(self, '$handle_global_match', function $$handle_global_match() {
+          var self = this;
 
-          return $send(self, 'with_temp', [], ($$15 = function(tmp){var self = $$15.$$s == null ? this : $$15.$$s;
+          return $send(self, 'with_temp', [], function $$4(tmp){var self = $$4.$$s == null ? this : $$4.$$s;
 
             
             
-            if (tmp == null) {
-              tmp = nil;
-            };
-            return self.$push("" + "((" + (tmp) + " = $gvars['~']) === nil ? nil : " + (tmp) + "['$[]'](0))");}, $$15.$$s = self, $$15.$$arity = 1, $$15))
-        }, $BackRefNode_handle_global_match$14.$$arity = 0);
+            if (tmp == null) tmp = nil;;
+            return self.$push("((" + (tmp) + " = $gvars['~']) === nil ? nil : " + (tmp) + "['$[]'](0))");}, {$$arity: 1, $$s: self})
+        }, 0);
         
-        Opal.def(self, '$handle_pre_match', $BackRefNode_handle_pre_match$16 = function $$handle_pre_match() {
-          var $$17, self = this;
+        $def(self, '$handle_pre_match', function $$handle_pre_match() {
+          var self = this;
 
-          return $send(self, 'with_temp', [], ($$17 = function(tmp){var self = $$17.$$s == null ? this : $$17.$$s;
+          return $send(self, 'with_temp', [], function $$5(tmp){var self = $$5.$$s == null ? this : $$5.$$s;
 
             
             
-            if (tmp == null) {
-              tmp = nil;
-            };
-            return self.$push("" + "((" + (tmp) + " = $gvars['~']) === nil ? nil : " + (tmp) + ".$pre_match())");}, $$17.$$s = self, $$17.$$arity = 1, $$17))
-        }, $BackRefNode_handle_pre_match$16.$$arity = 0);
-        return (Opal.def(self, '$handle_post_match', $BackRefNode_handle_post_match$18 = function $$handle_post_match() {
-          var $$19, self = this;
+            if (tmp == null) tmp = nil;;
+            return self.$push("((" + (tmp) + " = $gvars['~']) === nil ? nil : " + (tmp) + ".$pre_match())");}, {$$arity: 1, $$s: self})
+        }, 0);
+        return $def(self, '$handle_post_match', function $$handle_post_match() {
+          var self = this;
 
-          return $send(self, 'with_temp', [], ($$19 = function(tmp){var self = $$19.$$s == null ? this : $$19.$$s;
+          return $send(self, 'with_temp', [], function $$6(tmp){var self = $$6.$$s == null ? this : $$6.$$s;
 
             
             
-            if (tmp == null) {
-              tmp = nil;
-            };
-            return self.$push("" + "((" + (tmp) + " = $gvars['~']) === nil ? nil : " + (tmp) + ".$post_match())");}, $$19.$$s = self, $$19.$$arity = 1, $$19))
-        }, $BackRefNode_handle_post_match$18.$$arity = 0), nil) && 'handle_post_match';
-      })($nesting[0], $$($nesting, 'GlobalVariableNode'), $nesting);
-      (function($base, $super, $parent_nesting) {
+            if (tmp == null) tmp = nil;;
+            return self.$push("((" + (tmp) + " = $gvars['~']) === nil ? nil : " + (tmp) + ".$post_match())");}, {$$arity: 1, $$s: self})
+        }, 0);
+      })($nesting[0], $$('GlobalVariableNode'), $nesting);
+      (function($base, $super) {
         var self = $klass($base, $super, 'GlobalAssignNode');
 
-        var $nesting = [self].concat($parent_nesting), $GlobalAssignNode_var_name$20, $GlobalAssignNode_compile$21;
-
+        
         
         self.$handle("gvasgn");
         self.$children("name", "value");
         
-        Opal.def(self, '$var_name', $GlobalAssignNode_var_name$20 = function $$var_name() {
+        $def(self, '$var_name', function $$var_name() {
           var self = this;
 
           return self.$name().$to_s()['$[]']($range(1, -1, false))
-        }, $GlobalAssignNode_var_name$20.$$arity = 0);
-        return (Opal.def(self, '$compile', $GlobalAssignNode_compile$21 = function $$compile() {
-          var self = this, name = nil, $ret_or_7 = nil, $ret_or_8 = nil;
+        }, 0);
+        return $def(self, '$compile', function $$compile() {
+          var self = this, name = nil;
 
           
           self.$helper("gvars");
           name = self.$property(self.$var_name());
-          self.$push("" + "$gvars" + (name) + " = ");
+          self.$push("$gvars" + (name) + " = ");
           self.$push(self.$expr(self.$value()));
-          if ($truthy((function() {if ($truthy(($ret_or_7 = (function() {if ($truthy(($ret_or_8 = self['$recv?']()))) {
-            return $ret_or_8
-          } else {
-            return self['$expr?']()
-          }; return nil; })()))) {
-            return self.$value()
-          } else {
-            return $ret_or_7
-          }; return nil; })())) {
+          if ((($truthy(self['$recv?']()) || ($truthy(self['$expr?']()))) && ($truthy(self.$value())))) {
             return self.$wrap("(", ")")
           } else {
             return nil
           };
-        }, $GlobalAssignNode_compile$21.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'NthrefNode');
 
-        var $nesting = [self].concat($parent_nesting), $NthrefNode_compile$22;
-
+        
         
         self.$handle("nth_ref");
         self.$children("index");
-        return (Opal.def(self, '$compile', $NthrefNode_compile$22 = function $$compile() {
-          var $$23, self = this;
+        return $def(self, '$compile', function $$compile() {
+          var self = this;
 
           
           self.$helper("gvars");
-          return $send(self, 'with_temp', [], ($$23 = function(tmp){var self = $$23.$$s == null ? this : $$23.$$s;
+          return $send(self, 'with_temp', [], function $$7(tmp){var self = $$7.$$s == null ? this : $$7.$$s;
 
             
             
-            if (tmp == null) {
-              tmp = nil;
-            };
-            return self.$push("" + "((" + (tmp) + " = $gvars['~']) === nil ? nil : " + (tmp) + "['$[]'](" + (self.$index()) + "))");}, $$23.$$s = self, $$23.$$arity = 1, $$23));
-        }, $NthrefNode_compile$22.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+            if (tmp == null) tmp = nil;;
+            return self.$push("((" + (tmp) + " = $gvars['~']) === nil ? nil : " + (tmp) + "['$[]'](" + (self.$index()) + "))");}, {$$arity: 1, $$s: self});
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'ClassVariableNode');
 
-        var $nesting = [self].concat($parent_nesting), $ClassVariableNode_compile$24;
-
+        
         
         self.$handle("cvar");
         self.$children("name");
-        return (Opal.def(self, '$compile', $ClassVariableNode_compile$24 = function $$compile() {
+        return $def(self, '$compile', function $$compile() {
           var self = this, tolerant = nil;
 
           
           self.$helper("class_variable_get");
           tolerant = false;
           if ($truthy(self['$stmt?']())) {
-            tolerant = true};
-          return self.$push("" + "$class_variable_get(" + (self.$class_variable_owner()) + ", '" + (self.$name()) + "', " + (tolerant.$inspect()) + ")");
-        }, $ClassVariableNode_compile$24.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      return (function($base, $super, $parent_nesting) {
+            tolerant = true
+          };
+          return self.$push("$class_variable_get(" + (self.$class_variable_owner()) + ", '" + (self.$name()) + "', " + (tolerant.$inspect()) + ")");
+        }, 0);
+      })($nesting[0], $$('Base'));
+      return (function($base, $super) {
         var self = $klass($base, $super, 'ClassVarAssignNode');
 
-        var $nesting = [self].concat($parent_nesting), $ClassVarAssignNode_compile$25;
-
+        
         
         self.$handle("cvasgn");
         self.$children("name", "value");
-        return (Opal.def(self, '$compile', $ClassVarAssignNode_compile$25 = function $$compile() {
+        return $def(self, '$compile', function $$compile() {
           var self = this;
 
           
           self.$helper("class_variable_set");
-          return self.$push("" + "$class_variable_set(" + (self.$class_variable_owner()) + ", '" + (self.$name()) + "', ", self.$expr(self.$value()), ")");
-        }, $ClassVarAssignNode_compile$25.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
+          return self.$push("$class_variable_set(" + (self.$class_variable_owner()) + ", '" + (self.$name()) + "', ", self.$expr(self.$value()), ")");
+        }, 0);
+      })($nesting[0], $$('Base'));
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/constants"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy;
+Opal.modules["opal/nodes/constants"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $eqeq = Opal.eqeq, $def = Opal.def, $const_set = Opal.const_set;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$magical_data_const?', '$push', '$const_scope', '$recv', '$name', '$eval?', '$compiler', '$nil?', '$==', '$eof_content', '$base', '$expr', '$value']);
+  Opal.add_stubs('require,handle,children,magical_data_const?,push,optimized_access?,helper,name,==,const_scope,s,absolute_const,top_scope,recv,eval?,compiler,relative_access,scope,nil?,eof_content,freeze,include?,base,expr,value,nesting');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -33343,85 +30088,97 @@ Opal.modules["opal/nodes/constants"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
       (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'ConstNode');
 
-        var $nesting = [self].concat($parent_nesting), $ConstNode_compile$1, $ConstNode_magical_data_const$ques$2;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
         
         self.$handle("const");
         self.$children("const_scope", "name");
         
-        Opal.def(self, '$compile', $ConstNode_compile$1 = function $$compile() {
+        $def(self, '$compile', function $$compile() {
           var self = this;
 
           if ($truthy(self['$magical_data_const?']())) {
             return self.$push("$__END__")
+          } else if ($truthy(self['$optimized_access?']())) {
+            
+            self.$helper("" + (self.$name()));
+            return self.$push("$" + (self.$name()));
+          } else if ($eqeq(self.$const_scope(), self.$s("cbase"))) {
+            return self.$push("" + (self.$top_scope().$absolute_const()) + "('" + (self.$name()) + "')")
           } else if ($truthy(self.$const_scope())) {
-            return self.$push("$$$(", self.$recv(self.$const_scope()), "" + ", '" + (self.$name()) + "')")
+            return self.$push("" + (self.$top_scope().$absolute_const()) + "(", self.$recv(self.$const_scope()), ", '" + (self.$name()) + "')")
           } else if ($truthy(self.$compiler()['$eval?']())) {
-            return self.$push("" + "$$($nesting, '" + (self.$name()) + "')")
+            return self.$push("" + (self.$scope().$relative_access()) + "('" + (self.$name()) + "')")
           } else {
-            return self.$push("" + "$$($nesting, '" + (self.$name()) + "')")
+            return self.$push("" + (self.$scope().$relative_access()) + "('" + (self.$name()) + "')")
           }
-        }, $ConstNode_compile$1.$$arity = 0);
-        return (Opal.def(self, '$magical_data_const?', $ConstNode_magical_data_const$ques$2 = function() {
+        }, 0);
+        
+        $def(self, '$magical_data_const?', function $ConstNode_magical_data_const$ques$1() {
           var self = this, $ret_or_1 = nil, $ret_or_2 = nil;
 
-          if ($truthy(($ret_or_1 = (function() {if ($truthy(($ret_or_2 = self.$const_scope()['$nil?']()))) {
-            return self.$name()['$==']("DATA")
-          } else {
-            return $ret_or_2
-          }; return nil; })()))) {
+          if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = self.$const_scope()['$nil?']())) ? (self.$name()['$==']("DATA")) : ($ret_or_2))))) {
             return self.$compiler().$eof_content()
           } else {
             return $ret_or_1
           }
-        }, $ConstNode_magical_data_const$ques$2.$$arity = 0), nil) && 'magical_data_const?';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
-        var self = $klass($base, $super, 'CbaseNode');
+        }, 0);
+        $const_set($nesting[0], 'OPTIMIZED_ACCESS_CONSTS', ["BasicObject", "Object", "Module", "Class", "Opal", "Kernel", "NilClass"].$freeze());
+        return $def(self, '$optimized_access?', function $ConstNode_optimized_access$ques$2() {
+          var self = this, $ret_or_1 = nil;
 
-        var $nesting = [self].concat($parent_nesting), $CbaseNode_compile$3;
+          if ($truthy(($ret_or_1 = self.$const_scope()['$=='](self.$s("cbase"))))) {
+            return $$('OPTIMIZED_ACCESS_CONSTS')['$include?'](self.$name())
+          } else {
+            return $ret_or_1
+          }
+        }, 0);
+      })($nesting[0], $$('Base'), $nesting);
+      (function($base, $super) {
+        var self = $klass($base, $super, 'CbaseNode');
 
         
+        
         self.$handle("cbase");
-        return (Opal.def(self, '$compile', $CbaseNode_compile$3 = function $$compile() {
+        return $def(self, '$compile', function $$compile() {
           var self = this;
 
           return self.$push("'::'")
-        }, $CbaseNode_compile$3.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      return (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('Base'));
+      return (function($base, $super) {
         var self = $klass($base, $super, 'ConstAssignNode');
 
-        var $nesting = [self].concat($parent_nesting), $ConstAssignNode_compile$4;
-
+        
         
         self.$handle("casgn");
         self.$children("base", "name", "value");
-        return (Opal.def(self, '$compile', $ConstAssignNode_compile$4 = function $$compile() {
+        return $def(self, '$compile', function $$compile() {
           var self = this;
 
+          
+          self.$helper("const_set");
           if ($truthy(self.$base())) {
-            return self.$push("Opal.const_set(", self.$expr(self.$base()), "" + ", '" + (self.$name()) + "', ", self.$expr(self.$value()), ")")
+            return self.$push("$const_set(", self.$expr(self.$base()), ", '" + (self.$name()) + "', ", self.$expr(self.$value()), ")")
           } else {
-            return self.$push("" + "Opal.const_set($nesting[0], '" + (self.$name()) + "', ", self.$expr(self.$value()), ")")
-          }
-        }, $ConstAssignNode_compile$4.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
+            return self.$push("$const_set(" + (self.$scope().$nesting()) + "[0], '" + (self.$name()) + "', ", self.$expr(self.$value()), ")")
+          };
+        }, 0);
+      })($nesting[0], $$('Base'));
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/rewriters/break_finder"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $alias = Opal.alias;
+Opal.modules["opal/rewriters/break_finder"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $def = Opal.def, $alias = Opal.alias;
 
-  Opal.add_stubs(['$require']);
+  Opal.add_stubs('require');
   
   self.$require("opal/rewriter");
   return (function($base, $parent_nesting) {
@@ -33432,63 +30189,55 @@ Opal.modules["opal/rewriters/break_finder"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Rewriters');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'BreakFinder');
 
-        var $nesting = [self].concat($parent_nesting), $BreakFinder_initialize$1, $BreakFinder_found_break$ques$2, $BreakFinder_on_break$3, $BreakFinder_stop_lookup$4;
+        var $proto = self.$$prototype;
 
-        self.$$prototype.found_break = nil;
+        $proto.found_break = nil;
         
         
-        Opal.def(self, '$initialize', $BreakFinder_initialize$1 = function $$initialize() {
+        $def(self, '$initialize', function $$initialize() {
           var self = this;
 
           return (self.found_break = false)
-        }, $BreakFinder_initialize$1.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$found_break?', $BreakFinder_found_break$ques$2 = function() {
+        $def(self, '$found_break?', function $BreakFinder_found_break$ques$1() {
           var self = this;
 
           return self.found_break
-        }, $BreakFinder_found_break$ques$2.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$on_break', $BreakFinder_on_break$3 = function $$on_break(node) {
+        $def(self, '$on_break', function $$on_break(node) {
           var self = this;
 
           
           self.found_break = true;
           return node;
-        }, $BreakFinder_on_break$3.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$stop_lookup', $BreakFinder_stop_lookup$4 = function $$stop_lookup(node) {
-          var self = this;
-
+        $def(self, '$stop_lookup', function $$stop_lookup(node) {
+          
           return nil
-        }, $BreakFinder_stop_lookup$4.$$arity = 1);
+        }, 1);
         $alias(self, "on_for", "stop_lookup");
         $alias(self, "on_while", "stop_lookup");
         $alias(self, "on_while_post", "stop_lookup");
         $alias(self, "on_until", "stop_lookup");
         $alias(self, "on_until_post", "stop_lookup");
         return $alias(self, "on_block", "stop_lookup");
-      })($nesting[0], $$$($$$($$($nesting, 'Opal'), 'Rewriters'), 'Base'), $nesting)
+      })($nesting[0], $$$($$$($$('Opal'), 'Rewriters'), 'Base'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/call"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $hash2 = Opal.hash2, $send = Opal.send, $send2 = Opal.send2, $find_super = Opal.find_super, $slice = Opal.slice, $truthy = Opal.truthy, $range = Opal.range;
-
-  Opal.add_stubs(['$require', '$handle', '$attr_reader', '$freeze', '$[]=', '$-', '$define_method', '$to_proc', '$include?', '$type', '$s', '$handle_special', '$record_method?', '$<<', '$method_calls', '$compiler', '$to_sym', '$meth', '$using_eval?', '$compile_eval_var', '$using_irb?', '$compile_irb_var', '$default_compile', '$private', '$iter', '$new', '$process', '$found_break?', '$splat?', '$!', '$empty?', '$collect_refinements_temps', '$scope', '$invoke_using_refinement?', '$compile_using_refined_send', '$invoke_using_send?', '$compile_using_send', '$compile_simple_call_chain', '$compile_break_catcher', '$helper', '$push', '$compile_receiver', '$compile_method_name', '$compile_arguments', '$compile_block_pass', '$compile_refinements', '$recv', '$receiver_sexp', '$expr', '$arglist', '$children', '$map', '$iter_has_break?', '$unshift', '$line', '$method_jsid', '$any?', '$==', '$recvr', '$mid_to_jsid', '$to_s', '$with_temp', '$intern', '$irb?', '$top?', '$variable_like?', '$eval?', '$scope_variables', '$nil?', '$updated', '$method', '$arity', '$[]', '$each', '$add_special', '$inline_operators?', '$operator_helpers', '$fragment', '$call', '$resolve', '$requires', '$file', '$dirname', '$cleanpath', '$join', '$Pathname', '$inspect', '$class_scope?', '$required_trees', '$force_encoding', '$encoding', '$+', '$handle_block_given_call', '$def?', '$mid', '$accepts_using?', '$count', '$using_refinement', '$first', '$refinements_temp', '$arity_check?', '$defines_lambda', '$push_nesting?', '$!=', '$length', '$new_temp', '$scope_locals', '$source_location', '$size', '$last', '$handle_part', '$is_a?', '$expand_path', '$split', '$dynamic_require_severity', '$===', '$error', '$warning', '$each_with_object', '$pop']);
+Opal.modules["opal/nodes/call"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $const_set = Opal.const_set, $hash2 = Opal.hash2, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $defs = Opal.defs, $send2 = Opal.send2, $find_super = Opal.find_super, $slice = Opal.slice, $truthy = Opal.truthy, $def = Opal.def, $eqeq = Opal.eqeq, $rb_plus = Opal.rb_plus, $not = Opal.not, $neqeq = Opal.neqeq, $eqeqeq = Opal.eqeqeq, $to_ary = Opal.to_ary, $Opal = Opal.Opal, $range = Opal.range;
+
+  Opal.add_stubs('require,handle,attr_reader,freeze,[]=,-,define_method,to_proc,include?,type,s,handle_special,record_method?,<<,method_calls,compiler,to_sym,meth,using_eval?,compile_eval_var,using_irb?,compile_irb_var,default_compile,private,iter,new,process,found_break?,splat?,!,empty?,collect_refinements_temps,scope,auto_await?,push,await_encountered=,invoke_using_refinement?,compile_using_refined_send,invoke_using_send?,compile_using_send,compile_simple_call_chain,compile_break_catcher,helper,compile_receiver,compile_method_name,compile_arguments,compile_block_pass,compile_refinements,recv,receiver_sexp,expr,arglist,children,map,iter_has_break?,unshift,line,method_jsid,any?,==,recvr,mid_to_jsid,to_s,with_temp,intern,irb?,top?,variable_like?,eval?,scope_variables,nil?,updated,async_await,!=,match?,method,arity,[],each,add_special,call,inline_operators?,fragment,resolve,requires,file,dirname,cleanpath,join,Pathname,self,inspect,length,warning,autoloads,required_trees,force_encoding,encoding,+,handle_block_given_call,def?,mid,module_name,count,accepts_using?,using_refinement,first,refinements_temp,arity_check?,defines_lambda,push_nesting?,nesting,new_temp,scope_locals,source_location,size,last,dynamic_require_severity,handle_part,===,is_a?,expand_path,split,error,each_with_object,pop');
   
   self.$require("set");
   self.$require("pathname");
@@ -33502,117 +30251,117 @@ Opal.modules["opal/nodes/call"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'CallNode');
 
-        var $nesting = [self].concat($parent_nesting), $CallNode_add_special$1, $CallNode_initialize$2, $CallNode_compile$3, $CallNode_iter_has_break$ques$5, $CallNode_invoke_using_send$ques$6, $CallNode_invoke_using_refinement$ques$7, $CallNode_default_compile$8, $CallNode_compile_using_send$9, $CallNode_compile_using_refined_send$10, $CallNode_compile_receiver$11, $CallNode_compile_method_name$12, $CallNode_compile_arguments$13, $CallNode_compile_block_pass$14, $CallNode_compile_refinements$15, $CallNode_compile_break_catcher$17, $CallNode_compile_simple_call_chain$18, $CallNode_splat$ques$19, $CallNode_receiver_sexp$21, $CallNode_method_jsid$22, $CallNode_record_method$ques$23, $CallNode_compile_irb_var$24, $CallNode_compile_eval_var$26, $CallNode_using_irb$ques$27, $CallNode_using_eval$ques$28, $CallNode_variable_like$ques$29, $CallNode_sexp_with_arglist$30, $CallNode_handle_special$31, $CallNode$32, $CallNode$34, $CallNode$35, $CallNode$36, $CallNode$37, $CallNode$38, $CallNode$39, $CallNode$40, $CallNode$41, $CallNode_using_refinement$42, $CallNode$43, $CallNode$44, $CallNode$45, $CallNode$47, $CallNode$48, $CallNode$49, $CallNode$50, $CallNode_push_nesting$ques$51;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.sexp = self.$$prototype.compiler = nil;
+        $proto.sexp = $proto.compiler = nil;
         
         self.$handle("send");
         self.$attr_reader("recvr", "meth", "arglist", "iter");
-        Opal.const_set($nesting[0], 'SPECIALS', $hash2([], {}));
-        Opal.const_set($nesting[0], 'OPERATORS', $hash2(["+", "-", "*", "/", "<", "<=", ">", ">="], {"+": "plus", "-": "minus", "*": "times", "/": "divide", "<": "lt", "<=": "le", ">": "gt", ">=": "ge"}).$freeze());
-        Opal.defs(self, '$add_special', $CallNode_add_special$1 = function $$add_special(name, options) {
-          var $iter = $CallNode_add_special$1.$$p, handler = $iter || nil, self = this, $writer = nil;
+        $const_set($nesting[0], 'SPECIALS', $hash2([], {}));
+        $const_set($nesting[0], 'OPERATORS', $hash2(["+", "-", "*", "/", "<", "<=", ">", ">="], {"+": "plus", "-": "minus", "*": "times", "/": "divide", "<": "lt", "<=": "le", ">": "gt", ">=": "ge"}).$freeze());
+        $defs(self, '$add_special', function $$add_special(name, options) {
+          var handler = $$add_special.$$p || nil, self = this, $writer = nil;
 
-          if ($iter) $CallNode_add_special$1.$$p = null;
+          delete $$add_special.$$p;
           
+          ;
           
-          if ($iter) $CallNode_add_special$1.$$p = null;;
-          
-          if (options == null) {
-            options = $hash2([], {});
-          };
+          if (options == null) options = $hash2([], {});;
           
           $writer = [name, options];
-          $send($$($nesting, 'SPECIALS'), '[]=', Opal.to_a($writer));
+          $send($$('SPECIALS'), '[]=', $to_a($writer));
           $writer[$rb_minus($writer["length"], 1)];;
-          return $send(self, 'define_method', ["" + "handle_" + (name)], handler.$to_proc());
-        }, $CallNode_add_special$1.$$arity = -2);
+          return $send(self, 'define_method', ["handle_" + (name)], handler.$to_proc());
+        }, -2);
         
-        Opal.def(self, '$initialize', $CallNode_initialize$2 = function $$initialize($a) {
-          var $post_args, $b, $c, $iter = $CallNode_initialize$2.$$p, $yield = $iter || nil, self = this, args = nil, rest = nil, last_arg = nil, $ret_or_1 = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        $def(self, '$initialize', function $$initialize($a) {
+          var $post_args, $rest_arg, $b, $c, $yield = $$initialize.$$p || nil, self = this, args = nil, rest = nil, last_arg = nil;
 
-          if ($iter) $CallNode_initialize$2.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$initialize.$$p;
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
-          ;
-          $send2(self, $find_super(self, 'initialize', $CallNode_initialize$2, false, true), 'initialize', $zuper, $iter);
-          $b = [].concat(Opal.to_a(self.sexp)), (self.recvr = ($b[0] == null ? nil : $b[0])), (self.meth = ($b[1] == null ? nil : $b[1])), (args = $slice.call($b, 2)), $b;
-          $b = [].concat(Opal.to_a(args)), $c = $b.length - 1, $c = ($c < 0) ? 0 : $c, (rest = $slice.call($b, 0, $c)), (last_arg = ($b[$c] == null ? nil : $b[$c])), $b;
-          if ($truthy((function() {if ($truthy(($ret_or_1 = last_arg))) {
-            return ["iter", "block_pass"]['$include?'](last_arg.$type())
-          } else {
-            return $ret_or_1
-          }; return nil; })())) {
+          $post_args = Opal.slice.call(arguments);
+          
+          $rest_arg = $post_args;;
+          $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', $to_a($rest_arg), $yield);
+          $b = [].concat($to_a(self.sexp)), (self.recvr = ($b[0] == null ? nil : $b[0])), (self.meth = ($b[1] == null ? nil : $b[1])), (args = $slice.call($b, 2)), $b;
+          $b = [].concat($to_a(args)), $c = $b.length - 1, $c = ($c < 0) ? 0 : $c, (rest = $slice.call($b, 0, $c)), (last_arg = ($b[$c] == null ? nil : $b[$c])), $b;
+          if (($truthy(last_arg) && ($truthy(["iter", "block_pass"]['$include?'](last_arg.$type()))))) {
             
             self.iter = last_arg;
             args = rest;
           } else {
             self.iter = nil
           };
-          return (self.arglist = $send(self, 's', ["arglist"].concat(Opal.to_a(args))));
-        }, $CallNode_initialize$2.$$arity = -1);
+          return (self.arglist = $send(self, 's', ["arglist"].concat($to_a(args))));
+        }, -1);
         
-        Opal.def(self, '$compile', $CallNode_compile$3 = function $$compile() {try {
+        $def(self, '$compile', function $$compile() {try {
 
-          var $$4, self = this;
+          var self = this;
 
-          return $send(self, 'handle_special', [], ($$4 = function(){var self = $$4.$$s == null ? this : $$4.$$s;
+          return $send(self, 'handle_special', [], function $$1(){var self = $$1.$$s == null ? this : $$1.$$s;
 
             
             if ($truthy(self['$record_method?']())) {
-              self.$compiler().$method_calls()['$<<'](self.$meth().$to_sym())};
+              self.$compiler().$method_calls()['$<<'](self.$meth().$to_sym())
+            };
             if ($truthy(self['$using_eval?']())) {
-              Opal.ret(self.$compile_eval_var())};
+              Opal.ret(self.$compile_eval_var())
+            };
             if ($truthy(self['$using_irb?']())) {
-              Opal.ret(self.$compile_irb_var())};
-            return self.$default_compile();}, $$4.$$s = self, $$4.$$arity = 0, $$4))
+              Opal.ret(self.$compile_irb_var())
+            };
+            return self.$default_compile();}, {$$arity: 0, $$s: self})
           } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
-        }, $CallNode_compile$3.$$arity = 0);
+        }, 0);
         self.$private();
         
-        Opal.def(self, '$iter_has_break?', $CallNode_iter_has_break$ques$5 = function() {
+        $def(self, '$iter_has_break?', function $CallNode_iter_has_break$ques$2() {
           var self = this, finder = nil;
 
           
-          if ($truthy(self.$iter())) {
-          } else {
+          if (!$truthy(self.$iter())) {
             return false
           };
-          finder = $$$($$$($$($nesting, 'Opal'), 'Rewriters'), 'BreakFinder').$new();
+          finder = $$$($$$($$('Opal'), 'Rewriters'), 'BreakFinder').$new();
           finder.$process(self.$iter());
           return finder['$found_break?']();
-        }, $CallNode_iter_has_break$ques$5.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$invoke_using_send?', $CallNode_invoke_using_send$ques$6 = function() {
-          var self = this, $ret_or_2 = nil;
+        $def(self, '$invoke_using_send?', function $CallNode_invoke_using_send$ques$3() {
+          var self = this, $ret_or_1 = nil;
 
-          if ($truthy(($ret_or_2 = self.$iter()))) {
-            return $ret_or_2
+          if ($truthy(($ret_or_1 = self.$iter()))) {
+            return $ret_or_1
           } else {
             return self['$splat?']()
           }
-        }, $CallNode_invoke_using_send$ques$6.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$invoke_using_refinement?', $CallNode_invoke_using_refinement$ques$7 = function() {
+        $def(self, '$invoke_using_refinement?', function $CallNode_invoke_using_refinement$ques$4() {
           var self = this;
 
           return self.$scope().$scope().$collect_refinements_temps()['$empty?']()['$!']()
-        }, $CallNode_invoke_using_refinement$ques$7.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$default_compile', $CallNode_default_compile$8 = function $$default_compile() {
-          var self = this;
+        $def(self, '$default_compile', function $$default_compile() {
+          var self = this, $writer = nil;
 
           
+          if ($truthy(self['$auto_await?']())) {
+            
+            self.$push("await ");
+            
+            $writer = [true];
+            $send(self.$scope(), 'await_encountered=', $to_a($writer));
+            $writer[$rb_minus($writer["length"], 1)];;
+          };
           if ($truthy(self['$invoke_using_refinement?']())) {
             self.$compile_using_refined_send()
           } else if ($truthy(self['$invoke_using_send?']())) {
@@ -33621,9 +30370,9 @@ Opal.modules["opal/nodes/call"] = function(Opal) {
             self.$compile_simple_call_chain()
           };
           return self.$compile_break_catcher();
-        }, $CallNode_default_compile$8.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_using_send', $CallNode_compile_using_send$9 = function $$compile_using_send() {
+        $def(self, '$compile_using_send', function $$compile_using_send() {
           var self = this;
 
           
@@ -33634,9 +30383,9 @@ Opal.modules["opal/nodes/call"] = function(Opal) {
           self.$compile_arguments();
           self.$compile_block_pass();
           return self.$push(")");
-        }, $CallNode_compile_using_send$9.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_using_refined_send', $CallNode_compile_using_refined_send$10 = function $$compile_using_refined_send() {
+        $def(self, '$compile_using_refined_send', function $$compile_using_refined_send() {
           var self = this;
 
           
@@ -33648,21 +30397,21 @@ Opal.modules["opal/nodes/call"] = function(Opal) {
           self.$compile_arguments();
           self.$compile_block_pass();
           return self.$push(")");
-        }, $CallNode_compile_using_refined_send$10.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_receiver', $CallNode_compile_receiver$11 = function $$compile_receiver() {
+        $def(self, '$compile_receiver', function $$compile_receiver() {
           var self = this;
 
           return self.$push(self.$recv(self.$receiver_sexp()))
-        }, $CallNode_compile_receiver$11.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_method_name', $CallNode_compile_method_name$12 = function $$compile_method_name() {
+        $def(self, '$compile_method_name', function $$compile_method_name() {
           var self = this;
 
-          return self.$push("" + ", '" + (self.$meth()) + "'")
-        }, $CallNode_compile_method_name$12.$$arity = 0);
+          return self.$push(", '" + (self.$meth()) + "'")
+        }, 0);
         
-        Opal.def(self, '$compile_arguments', $CallNode_compile_arguments$13 = function $$compile_arguments() {
+        $def(self, '$compile_arguments', function $$compile_arguments() {
           var self = this;
 
           
@@ -33674,9 +30423,9 @@ Opal.modules["opal/nodes/call"] = function(Opal) {
           } else {
             return self.$push("[", self.$expr(self.$arglist()), "]")
           };
-        }, $CallNode_compile_arguments$13.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_block_pass', $CallNode_compile_block_pass$14 = function $$compile_block_pass() {
+        $def(self, '$compile_block_pass', function $$compile_block_pass() {
           var self = this;
 
           if ($truthy(self.$iter())) {
@@ -33684,24 +30433,22 @@ Opal.modules["opal/nodes/call"] = function(Opal) {
           } else {
             return nil
           }
-        }, $CallNode_compile_block_pass$14.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_refinements', $CallNode_compile_refinements$15 = function $$compile_refinements() {
-          var $$16, self = this, refinements = nil;
+        $def(self, '$compile_refinements', function $$compile_refinements() {
+          var self = this, refinements = nil;
 
           
-          refinements = $send(self.$scope().$collect_refinements_temps(), 'map', [], ($$16 = function(i){var self = $$16.$$s == null ? this : $$16.$$s;
+          refinements = $send(self.$scope().$collect_refinements_temps(), 'map', [], function $$5(i){var self = $$5.$$s == null ? this : $$5.$$s;
 
             
             
-            if (i == null) {
-              i = nil;
-            };
-            return self.$s("js_tmp", i);}, $$16.$$s = self, $$16.$$arity = 1, $$16));
-          return self.$push(self.$expr($send(self, 's', ["array"].concat(Opal.to_a(refinements)))), ", ");
-        }, $CallNode_compile_refinements$15.$$arity = 0);
+            if (i == null) i = nil;;
+            return self.$s("js_tmp", i);}, {$$arity: 1, $$s: self});
+          return self.$push(self.$expr($send(self, 's', ["array"].concat($to_a(refinements)))), ", ");
+        }, 0);
         
-        Opal.def(self, '$compile_break_catcher', $CallNode_compile_break_catcher$17 = function $$compile_break_catcher() {
+        $def(self, '$compile_break_catcher', function $$compile_break_catcher() {
           var self = this;
 
           if ($truthy(self['$iter_has_break?']())) {
@@ -33712,129 +30459,122 @@ Opal.modules["opal/nodes/call"] = function(Opal) {
           } else {
             return nil
           }
-        }, $CallNode_compile_break_catcher$17.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_simple_call_chain', $CallNode_compile_simple_call_chain$18 = function $$compile_simple_call_chain() {
+        $def(self, '$compile_simple_call_chain', function $$compile_simple_call_chain() {
           var self = this;
 
           return self.$push(self.$recv(self.$receiver_sexp()), self.$method_jsid(), "(", self.$expr(self.$arglist()), ")")
-        }, $CallNode_compile_simple_call_chain$18.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$splat?', $CallNode_splat$ques$19 = function() {
-          var $$20, self = this;
-
-          return $send(self.$arglist().$children(), 'any?', [], ($$20 = function(a){var self = $$20.$$s == null ? this : $$20.$$s;
+        $def(self, '$splat?', function $CallNode_splat$ques$6() {
+          var self = this;
 
+          return $send(self.$arglist().$children(), 'any?', [], function $$7(a){
             
             
-            if (a == null) {
-              a = nil;
-            };
-            return a.$type()['$==']("splat");}, $$20.$$s = self, $$20.$$arity = 1, $$20))
-        }, $CallNode_splat$ques$19.$$arity = 0);
+            if (a == null) a = nil;;
+            return a.$type()['$==']("splat");}, 1)
+        }, 0);
         
-        Opal.def(self, '$receiver_sexp', $CallNode_receiver_sexp$21 = function $$receiver_sexp() {
-          var self = this, $ret_or_3 = nil;
+        $def(self, '$receiver_sexp', function $$receiver_sexp() {
+          var self = this, $ret_or_1 = nil;
 
-          if ($truthy(($ret_or_3 = self.$recvr()))) {
-            return $ret_or_3
+          if ($truthy(($ret_or_1 = self.$recvr()))) {
+            return $ret_or_1
           } else {
             return self.$s("self")
           }
-        }, $CallNode_receiver_sexp$21.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$method_jsid', $CallNode_method_jsid$22 = function $$method_jsid() {
+        $def(self, '$method_jsid', function $$method_jsid() {
           var self = this;
 
           return self.$mid_to_jsid(self.$meth().$to_s())
-        }, $CallNode_method_jsid$22.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$record_method?', $CallNode_record_method$ques$23 = function() {
-          var self = this;
-
+        $def(self, '$record_method?', function $CallNode_record_method$ques$8() {
+          
           return true
-        }, $CallNode_record_method$ques$23.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_irb_var', $CallNode_compile_irb_var$24 = function $$compile_irb_var() {
-          var $$25, self = this;
+        $def(self, '$compile_irb_var', function $$compile_irb_var() {
+          var self = this;
 
-          return $send(self, 'with_temp', [], ($$25 = function(tmp){var self = $$25.$$s == null ? this : $$25.$$s, lvar = nil, call = nil;
+          return $send(self, 'with_temp', [], function $$9(tmp){var self = $$9.$$s == null ? this : $$9.$$s, lvar = nil, call = nil;
 
             
             
-            if (tmp == null) {
-              tmp = nil;
-            };
+            if (tmp == null) tmp = nil;;
             lvar = self.$meth();
             call = self.$s("send", self.$s("self"), self.$meth().$intern(), self.$s("arglist"));
-            return self.$push("" + "((" + (tmp) + " = Opal.irb_vars." + (lvar) + ") == null ? ", self.$expr(call), "" + " : " + (tmp) + ")");}, $$25.$$s = self, $$25.$$arity = 1, $$25))
-        }, $CallNode_compile_irb_var$24.$$arity = 0);
+            return self.$push("((" + (tmp) + " = Opal.irb_vars." + (lvar) + ") == null ? ", self.$expr(call), " : " + (tmp) + ")");}, {$$arity: 1, $$s: self})
+        }, 0);
         
-        Opal.def(self, '$compile_eval_var', $CallNode_compile_eval_var$26 = function $$compile_eval_var() {
+        $def(self, '$compile_eval_var', function $$compile_eval_var() {
           var self = this;
 
           return self.$push(self.$meth().$to_s())
-        }, $CallNode_compile_eval_var$26.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$using_irb?', $CallNode_using_irb$ques$27 = function() {
-          var self = this, $ret_or_4 = nil, $ret_or_5 = nil;
+        $def(self, '$using_irb?', function $CallNode_using_irb$ques$10() {
+          var self = this, $ret_or_1 = nil, $ret_or_2 = nil;
 
-          if ($truthy(($ret_or_4 = (function() {if ($truthy(($ret_or_5 = self.compiler['$irb?']()))) {
-            return self.$scope()['$top?']()
-          } else {
-            return $ret_or_5
-          }; return nil; })()))) {
+          if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = self.compiler['$irb?']())) ? (self.$scope()['$top?']()) : ($ret_or_2))))) {
             return self['$variable_like?']()
           } else {
-            return $ret_or_4
+            return $ret_or_1
           }
-        }, $CallNode_using_irb$ques$27.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$using_eval?', $CallNode_using_eval$ques$28 = function() {
-          var self = this, $ret_or_6 = nil, $ret_or_7 = nil;
+        $def(self, '$using_eval?', function $CallNode_using_eval$ques$11() {
+          var self = this, $ret_or_1 = nil, $ret_or_2 = nil;
 
-          if ($truthy(($ret_or_6 = (function() {if ($truthy(($ret_or_7 = self.compiler['$eval?']()))) {
-            return self.$scope()['$top?']()
-          } else {
-            return $ret_or_7
-          }; return nil; })()))) {
+          if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = self.compiler['$eval?']())) ? (self.$scope()['$top?']()) : ($ret_or_2))))) {
             return self.compiler.$scope_variables()['$include?'](self.$meth())
           } else {
-            return $ret_or_6
+            return $ret_or_1
           }
-        }, $CallNode_using_eval$ques$28.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$variable_like?', $CallNode_variable_like$ques$29 = function() {
-          var self = this, $ret_or_8 = nil, $ret_or_9 = nil;
+        $def(self, '$variable_like?', function $CallNode_variable_like$ques$12() {
+          var self = this, $ret_or_1 = nil, $ret_or_2 = nil;
 
-          if ($truthy(($ret_or_8 = (function() {if ($truthy(($ret_or_9 = self.$arglist()['$=='](self.$s("arglist"))))) {
-            return self.$recvr()['$nil?']()
-          } else {
-            return $ret_or_9
-          }; return nil; })()))) {
+          if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = self.$arglist()['$=='](self.$s("arglist")))) ? (self.$recvr()['$nil?']()) : ($ret_or_2))))) {
             return self.$iter()['$nil?']()
           } else {
-            return $ret_or_8
+            return $ret_or_1
           }
-        }, $CallNode_variable_like$ques$29.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$sexp_with_arglist', $CallNode_sexp_with_arglist$30 = function $$sexp_with_arglist() {
+        $def(self, '$sexp_with_arglist', function $$sexp_with_arglist() {
           var self = this;
 
           return self.sexp.$updated(nil, [self.$recvr(), self.$meth(), self.$arglist()])
-        }, $CallNode_sexp_with_arglist$30.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$handle_special', $CallNode_handle_special$31 = function $$handle_special() {
-          var $iter = $CallNode_handle_special$31.$$p, compile_default = $iter || nil, self = this, method = nil;
+        $def(self, '$auto_await?', function $CallNode_auto_await$ques$13() {
+          var self = this, awaited_set = nil, $ret_or_1 = nil, $ret_or_2 = nil;
 
-          if ($iter) $CallNode_handle_special$31.$$p = null;
           
+          awaited_set = self.$compiler().$async_await();
+          if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = awaited_set)) ? (awaited_set['$!='](true)) : ($ret_or_2))))) {
+            return awaited_set['$match?'](self.$meth().$to_s())
+          } else {
+            return $ret_or_1
+          };
+        }, 0);
+        
+        $def(self, '$handle_special', function $$handle_special() {
+          var compile_default = $$handle_special.$$p || nil, self = this, method = nil;
+
+          delete $$handle_special.$$p;
           
-          if ($iter) $CallNode_handle_special$31.$$p = null;;
-          if ($truthy($$($nesting, 'SPECIALS')['$include?'](self.$meth()))) {
+          ;
+          if ($truthy($$('SPECIALS')['$include?'](self.$meth()))) {
             
-            method = self.$method("" + "handle_" + (self.$meth()));
-            if (method.$arity()['$=='](1)) {
+            method = self.$method("handle_" + (self.$meth()));
+            if ($eqeq(method.$arity(), 1)) {
               return method['$[]'](compile_default)
             } else {
               return method['$[]']()
@@ -33842,217 +30582,215 @@ Opal.modules["opal/nodes/call"] = function(Opal) {
           } else {
             return Opal.yieldX(compile_default, []);
           };
-        }, $CallNode_handle_special$31.$$arity = 0);
-        $send($$($nesting, 'OPERATORS'), 'each', [], ($CallNode$32 = function(operator, name){var self = $CallNode$32.$$s == null ? this : $CallNode$32.$$s, $$33;
+        }, 0);
+        $send($$('OPERATORS'), 'each', [], function $CallNode$14(operator, name){var self = $CallNode$14.$$s == null ? this : $CallNode$14.$$s;
 
           
           
-          if (operator == null) {
-            operator = nil;
-          };
+          if (operator == null) operator = nil;;
           
-          if (name == null) {
-            name = nil;
-          };
-          return $send(self, 'add_special', [operator.$to_sym()], ($$33 = function(compile_default){var self = $$33.$$s == null ? this : $$33.$$s, $a, lhs = nil, rhs = nil;
+          if (name == null) name = nil;;
+          return $send(self, 'add_special', [operator.$to_sym()], function $$15(compile_default){var $a, self = $$15.$$s == null ? this : $$15.$$s, lhs = nil, rhs = nil;
 
             
             
-            if (compile_default == null) {
-              compile_default = nil;
-            };
-            if ($truthy(self.$compiler()['$inline_operators?']())) {
+            if (compile_default == null) compile_default = nil;;
+            if ($truthy(self['$invoke_using_refinement?']())) {
+              return compile_default.$call()
+            } else if ($truthy(self.$compiler()['$inline_operators?']())) {
               
               if ($truthy(self['$record_method?']())) {
-                self.$compiler().$method_calls()['$<<'](operator.$to_sym())};
-              self.$compiler().$operator_helpers()['$<<'](operator.$to_sym());
+                self.$compiler().$method_calls()['$<<'](operator.$to_sym())
+              };
+              self.$helper("rb_" + (name));
               $a = [self.$expr(self.$recvr()), self.$expr(self.$arglist())], (lhs = $a[0]), (rhs = $a[1]), $a;
-              self.$push(self.$fragment("" + "$rb_" + (name) + "("));
+              self.$push(self.$fragment("$rb_" + (name) + "("));
               self.$push(lhs);
               self.$push(self.$fragment(", "));
               self.$push(rhs);
               return self.$push(self.$fragment(")"));
             } else {
               return compile_default.$call()
-            };}, $$33.$$s = self, $$33.$$arity = 1, $$33));}, $CallNode$32.$$s = self, $CallNode$32.$$arity = 2, $CallNode$32));
-        $send(self, 'add_special', ["require"], ($CallNode$34 = function(compile_default){var self = $CallNode$34.$$s == null ? this : $CallNode$34.$$s, str = nil;
+            };}, {$$arity: 1, $$s: self});}, {$$arity: 2, $$s: self});
+        $send(self, 'add_special', ["require"], function $CallNode$16(compile_default){var self = $CallNode$16.$$s == null ? this : $CallNode$16.$$s, str = nil;
 
           
           
-          if (compile_default == null) {
-            compile_default = nil;
-          };
-          str = $$($nesting, 'DependencyResolver').$new(self.$compiler(), self.$arglist().$children()['$[]'](0)).$resolve();
-          if ($truthy(str['$nil?']())) {
-          } else {
+          if (compile_default == null) compile_default = nil;;
+          str = $$('DependencyResolver').$new(self.$compiler(), self.$arglist().$children()['$[]'](0)).$resolve();
+          if (!$truthy(str['$nil?']())) {
             self.$compiler().$requires()['$<<'](str)
           };
-          return compile_default.$call();}, $CallNode$34.$$s = self, $CallNode$34.$$arity = 1, $CallNode$34));
-        $send(self, 'add_special', ["require_relative"], ($CallNode$35 = function(){var self = $CallNode$35.$$s == null ? this : $CallNode$35.$$s, arg = nil, file = nil, dir = nil;
+          return compile_default.$call();}, {$$arity: 1, $$s: self});
+        $send(self, 'add_special', ["require_relative"], function $CallNode$17(){var self = $CallNode$17.$$s == null ? this : $CallNode$17.$$s, arg = nil, file = nil, dir = nil;
 
           
           arg = self.$arglist().$children()['$[]'](0);
           file = self.$compiler().$file();
-          if (arg.$type()['$==']("str")) {
+          if ($eqeq(arg.$type(), "str")) {
             
-            dir = $$($nesting, 'File').$dirname(file);
-            self.$compiler().$requires()['$<<'](self.$Pathname(dir).$join(arg.$children()['$[]'](0)).$cleanpath().$to_s());};
-          self.$push(self.$fragment("" + "self.$require(" + (file.$inspect()) + "+ '/../' + "));
+            dir = $$('File').$dirname(file);
+            self.$compiler().$requires()['$<<'](self.$Pathname(dir).$join(arg.$children()['$[]'](0)).$cleanpath().$to_s());
+          };
+          self.$push(self.$fragment("" + (self.$scope().$self()) + ".$require(" + (file.$inspect()) + "+ '/../' + "));
           self.$push(self.$process(self.$arglist()));
-          return self.$push(self.$fragment(")"));}, $CallNode$35.$$s = self, $CallNode$35.$$arity = 0, $CallNode$35));
-        $send(self, 'add_special', ["autoload"], ($CallNode$36 = function(compile_default){var self = $CallNode$36.$$s == null ? this : $CallNode$36.$$s, str = nil;
+          return self.$push(self.$fragment(")"));}, {$$arity: 0, $$s: self});
+        $send(self, 'add_special', ["autoload"], function $CallNode$18(compile_default){var self = $CallNode$18.$$s == null ? this : $CallNode$18.$$s, args = nil, str = nil;
 
           
           
-          if (compile_default == null) {
-            compile_default = nil;
-          };
-          if ($truthy(self.$scope()['$class_scope?']())) {
+          if (compile_default == null) compile_default = nil;;
+          args = self.$arglist().$children();
+          if (($eqeq(args.$length(), 2) && ($eqeq(args['$[]'](0).$type(), "sym")))) {
             
-            str = $$($nesting, 'DependencyResolver').$new(self.$compiler(), self.$arglist().$children()['$[]'](1)).$resolve();
+            str = $$('DependencyResolver').$new(self.$compiler(), args['$[]'](1), "ignore").$resolve();
             if ($truthy(str['$nil?']())) {
+              self.$compiler().$warning("File for autoload of constant '" + (args['$[]'](0).$children()['$[]'](0)) + "' could not be bundled!")
             } else {
-              self.$compiler().$requires()['$<<'](str)
+              
+              self.$compiler().$requires()['$<<'](str);
+              self.$compiler().$autoloads()['$<<'](str);
             };
-            return compile_default.$call();
-          } else {
-            return nil
-          };}, $CallNode$36.$$s = self, $CallNode$36.$$arity = 1, $CallNode$36));
-        $send(self, 'add_special', ["require_tree"], ($CallNode$37 = function(compile_default){var self = $CallNode$37.$$s == null ? this : $CallNode$37.$$s, $a, first_arg = nil, rest = nil, relative_path = nil, dir = nil, full_path = nil;
+          };
+          return compile_default.$call();}, {$$arity: 1, $$s: self});
+        $send(self, 'add_special', ["require_tree"], function $CallNode$19(compile_default){var $a, self = $CallNode$19.$$s == null ? this : $CallNode$19.$$s, first_arg = nil, rest = nil, relative_path = nil, dir = nil, full_path = nil;
 
           
           
-          if (compile_default == null) {
-            compile_default = nil;
-          };
-          $a = [].concat(Opal.to_a(self.$arglist().$children())), (first_arg = ($a[0] == null ? nil : $a[0])), (rest = $slice.call($a, 1)), $a;
-          if (first_arg.$type()['$==']("str")) {
+          if (compile_default == null) compile_default = nil;;
+          $a = [].concat($to_a(self.$arglist().$children())), (first_arg = ($a[0] == null ? nil : $a[0])), (rest = $slice.call($a, 1)), $a;
+          if ($eqeq(first_arg.$type(), "str")) {
             
             relative_path = first_arg.$children()['$[]'](0);
             self.$compiler().$required_trees()['$<<'](relative_path);
-            dir = $$($nesting, 'File').$dirname(self.$compiler().$file());
+            dir = $$('File').$dirname(self.$compiler().$file());
             full_path = self.$Pathname(dir).$join(relative_path).$cleanpath().$to_s();
             full_path.$force_encoding(relative_path.$encoding());
-            first_arg = first_arg.$updated(nil, [full_path]);};
+            first_arg = first_arg.$updated(nil, [full_path]);
+          };
           self.arglist = self.$arglist().$updated(nil, $rb_plus([first_arg], rest));
-          return compile_default.$call();}, $CallNode$37.$$s = self, $CallNode$37.$$arity = 1, $CallNode$37));
-        $send(self, 'add_special', ["block_given?"], ($CallNode$38 = function(){var self = $CallNode$38.$$s == null ? this : $CallNode$38.$$s;
+          return compile_default.$call();}, {$$arity: 1, $$s: self});
+        $send(self, 'add_special', ["block_given?"], function $CallNode$20(){var self = $CallNode$20.$$s == null ? this : $CallNode$20.$$s;
           if (self.sexp == null) self.sexp = nil;
 
-          return self.$push(self.$compiler().$handle_block_given_call(self.sexp))}, $CallNode$38.$$s = self, $CallNode$38.$$arity = 0, $CallNode$38));
-        $send(self, 'add_special', ["__callee__"], ($CallNode$39 = function(){var self = $CallNode$39.$$s == null ? this : $CallNode$39.$$s;
+          return self.$push(self.$compiler().$handle_block_given_call(self.sexp))}, {$$arity: 0, $$s: self});
+        $send(self, 'add_special', ["__callee__"], function $CallNode$21(){var self = $CallNode$21.$$s == null ? this : $CallNode$21.$$s;
 
           if ($truthy(self.$scope()['$def?']())) {
             return self.$push(self.$fragment(self.$scope().$mid().$to_s().$inspect()))
           } else {
             return self.$push(self.$fragment("nil"))
-          }}, $CallNode$39.$$s = self, $CallNode$39.$$arity = 0, $CallNode$39));
-        $send(self, 'add_special', ["__method__"], ($CallNode$40 = function(){var self = $CallNode$40.$$s == null ? this : $CallNode$40.$$s;
+          }}, {$$arity: 0, $$s: self});
+        $send(self, 'add_special', ["__method__"], function $CallNode$22(){var self = $CallNode$22.$$s == null ? this : $CallNode$22.$$s;
 
           if ($truthy(self.$scope()['$def?']())) {
             return self.$push(self.$fragment(self.$scope().$mid().$to_s().$inspect()))
           } else {
             return self.$push(self.$fragment("nil"))
-          }}, $CallNode$40.$$s = self, $CallNode$40.$$arity = 0, $CallNode$40));
-        $send(self, 'add_special', ["using"], ($CallNode$41 = function(compile_default){var self = $CallNode$41.$$s == null ? this : $CallNode$41.$$s, $ret_or_10 = nil;
+          }}, {$$arity: 0, $$s: self});
+        $send(self, 'add_special', ["__dir__"], function $CallNode$23(){var self = $CallNode$23.$$s == null ? this : $CallNode$23.$$s;
+
+          return self.$push($$('File').$dirname($$$($$('Opal'), 'Compiler').$module_name(self.$compiler().$file())).$inspect())}, {$$arity: 0, $$s: self});
+        $send(self, 'add_special', ["using"], function $CallNode$24(compile_default){var self = $CallNode$24.$$s == null ? this : $CallNode$24.$$s;
 
           
           
-          if (compile_default == null) {
-            compile_default = nil;
-          };
-          if ($truthy((function() {if ($truthy(($ret_or_10 = self.$scope()['$accepts_using?']()))) {
-            return self.$arglist().$children().$count()['$=='](1)
-          } else {
-            return $ret_or_10
-          }; return nil; })())) {
+          if (compile_default == null) compile_default = nil;;
+          if (($truthy(self.$scope()['$accepts_using?']()) && ($eqeq(self.$arglist().$children().$count(), 1)))) {
             return self.$using_refinement(self.$arglist().$children().$first())
           } else {
             return compile_default.$call()
-          };}, $CallNode$41.$$s = self, $CallNode$41.$$arity = 1, $CallNode$41));
+          };}, {$$arity: 1, $$s: self});
         
-        Opal.def(self, '$using_refinement', $CallNode_using_refinement$42 = function $$using_refinement(arg) {
+        $def(self, '$using_refinement', function $$using_refinement(arg) {
           var $a, self = this, prev = nil, curr = nil;
 
           
-          $a = [].concat(Opal.to_a(self.$scope().$refinements_temp())), (prev = ($a[0] == null ? nil : $a[0])), (curr = ($a[1] == null ? nil : $a[1])), $a;
+          $a = [].concat($to_a(self.$scope().$refinements_temp())), (prev = ($a[0] == null ? nil : $a[0])), (curr = ($a[1] == null ? nil : $a[1])), $a;
           if ($truthy(prev)) {
-            return self.$push("" + "(" + (curr) + " = " + (prev) + ".slice(), " + (curr) + ".push(", self.$expr(arg), "), self)")
+            return self.$push("(" + (curr) + " = " + (prev) + ".slice(), " + (curr) + ".push(", self.$expr(arg), "), " + (self.$scope().$self()) + ")")
           } else {
-            return self.$push("" + "(" + (curr) + " = [", self.$expr(arg), "], self)")
+            return self.$push("(" + (curr) + " = [", self.$expr(arg), "], " + (self.$scope().$self()) + ")")
           };
-        }, $CallNode_using_refinement$42.$$arity = 1);
-        $send(self, 'add_special', ["debugger"], ($CallNode$43 = function(){var self = $CallNode$43.$$s == null ? this : $CallNode$43.$$s;
+        }, 1);
+        $send(self, 'add_special', ["debugger"], function $CallNode$25(){var self = $CallNode$25.$$s == null ? this : $CallNode$25.$$s;
 
-          return self.$push(self.$fragment("debugger"))}, $CallNode$43.$$s = self, $CallNode$43.$$arity = 0, $CallNode$43));
-        $send(self, 'add_special', ["__OPAL_COMPILER_CONFIG__"], ($CallNode$44 = function(){var self = $CallNode$44.$$s == null ? this : $CallNode$44.$$s;
+          return self.$push(self.$fragment("debugger"))}, {$$arity: 0, $$s: self});
+        $send(self, 'add_special', ["__OPAL_COMPILER_CONFIG__"], function $CallNode$26(){var self = $CallNode$26.$$s == null ? this : $CallNode$26.$$s;
 
-          return self.$push(self.$fragment("" + "Opal.hash({ arity_check: " + (self.$compiler()['$arity_check?']()) + " })"))}, $CallNode$44.$$s = self, $CallNode$44.$$arity = 0, $CallNode$44));
-        $send(self, 'add_special', ["lambda"], ($CallNode$45 = function(compile_default){var self = $CallNode$45.$$s == null ? this : $CallNode$45.$$s, $$46;
+          return self.$push(self.$fragment("Opal.hash({ arity_check: " + (self.$compiler()['$arity_check?']()) + " })"))}, {$$arity: 0, $$s: self});
+        $send(self, 'add_special', ["lambda"], function $CallNode$27(compile_default){var self = $CallNode$27.$$s == null ? this : $CallNode$27.$$s;
 
           
           
-          if (compile_default == null) {
-            compile_default = nil;
-          };
-          return $send(self.$scope(), 'defines_lambda', [], ($$46 = function(){var self = $$46.$$s == null ? this : $$46.$$s;
-
-            return compile_default.$call()}, $$46.$$s = self, $$46.$$arity = 0, $$46));}, $CallNode$45.$$s = self, $CallNode$45.$$arity = 1, $CallNode$45));
-        $send(self, 'add_special', ["nesting"], ($CallNode$47 = function(compile_default){var self = $CallNode$47.$$s == null ? this : $CallNode$47.$$s, push_nesting = nil;
+          if (compile_default == null) compile_default = nil;;
+          return $send(self.$scope(), 'defines_lambda', [], function $$28(){
+            return compile_default.$call()}, 0);}, {$$arity: 1, $$s: self});
+        $send(self, 'add_special', ["nesting"], function $CallNode$29(compile_default){var self = $CallNode$29.$$s == null ? this : $CallNode$29.$$s, push_nesting = nil;
 
           
           
-          if (compile_default == null) {
-            compile_default = nil;
-          };
+          if (compile_default == null) compile_default = nil;;
           push_nesting = self['$push_nesting?']();
           if ($truthy(push_nesting)) {
-            self.$push("(Opal.Module.$$nesting = $nesting, ")};
+            self.$push("(Opal.Module.$$nesting = " + (self.$scope().$nesting()) + ", ")
+          };
           compile_default.$call();
           if ($truthy(push_nesting)) {
             return self.$push(")")
           } else {
             return nil
-          };}, $CallNode$47.$$s = self, $CallNode$47.$$arity = 1, $CallNode$47));
-        $send(self, 'add_special', ["constants"], ($CallNode$48 = function(compile_default){var self = $CallNode$48.$$s == null ? this : $CallNode$48.$$s, push_nesting = nil;
+          };}, {$$arity: 1, $$s: self});
+        $send(self, 'add_special', ["constants"], function $CallNode$30(compile_default){var self = $CallNode$30.$$s == null ? this : $CallNode$30.$$s, push_nesting = nil;
 
           
           
-          if (compile_default == null) {
-            compile_default = nil;
-          };
+          if (compile_default == null) compile_default = nil;;
           push_nesting = self['$push_nesting?']();
           if ($truthy(push_nesting)) {
-            self.$push("(Opal.Module.$$nesting = $nesting, ")};
+            self.$push("(Opal.Module.$$nesting = " + (self.$scope().$nesting()) + ", ")
+          };
           compile_default.$call();
           if ($truthy(push_nesting)) {
             return self.$push(")")
           } else {
             return nil
-          };}, $CallNode$48.$$s = self, $CallNode$48.$$arity = 1, $CallNode$48));
-        $send(self, 'add_special', ["eval"], ($CallNode$49 = function(compile_default){var self = $CallNode$49.$$s == null ? this : $CallNode$49.$$s, $ret_or_11 = nil, temp = nil, scope_variables = nil;
+          };}, {$$arity: 1, $$s: self});
+        $send(self, 'add_special', ["eval"], function $CallNode$31(compile_default){var self = $CallNode$31.$$s == null ? this : $CallNode$31.$$s, temp = nil, scope_variables = nil;
 
           
           
-          if (compile_default == null) {
-            compile_default = nil;
+          if (compile_default == null) compile_default = nil;;
+          if (($neqeq(self.$arglist().$children().$length(), 1) || ($not([self.$s("self"), nil]['$include?'](self.$recvr()))))) {
+            return compile_default.$call();
           };
-          if ($truthy((function() {if ($truthy(($ret_or_11 = self.$arglist().$children().$length()['$!='](1)))) {
-            return $ret_or_11
-          } else {
-            return [self.$s("self"), nil]['$include?'](self.$recvr())['$!']()
-          }; return nil; })())) {
-            return compile_default.$call();};
+          self.$scope().$nesting();
           temp = self.$scope().$new_temp();
           scope_variables = $send(self.$scope().$scope_locals(), 'map', [], "to_s".$to_proc()).$inspect();
-          self.$push("" + "(" + (temp) + " = ", self.$expr(self.$arglist()));
-          self.$push("" + ", typeof Opal.compile === 'function' ? eval(Opal.compile(" + (temp));
+          self.$push("(" + (temp) + " = ", self.$expr(self.$arglist()));
+          self.$push(", typeof Opal.compile === 'function' ? eval(Opal.compile(" + (temp));
           self.$push(", {scope_variables: ", scope_variables);
-          self.$push("" + ", arity_check: " + (self.$compiler()['$arity_check?']()) + ", file: '(eval)', eval: true})) : ");
-          return self.$push("" + "self.$eval(" + (temp) + "))");}, $CallNode$49.$$s = self, $CallNode$49.$$arity = 1, $CallNode$49));
-        $send(self, 'add_special', ["binding"], ($CallNode$50 = function(){var self = $CallNode$50.$$s == null ? this : $CallNode$50.$$s;
+          self.$push(", arity_check: " + (self.$compiler()['$arity_check?']()) + ", file: '(eval)', eval: true})) : ");
+          return self.$push("" + (self.$scope().$self()) + ".$eval(" + (temp) + "))");}, {$$arity: 1, $$s: self});
+        $send(self, 'add_special', ["local_variables"], function $CallNode$32(compile_default){var self = $CallNode$32.$$s == null ? this : $CallNode$32.$$s, scope_variables = nil;
+
+          
+          
+          if (compile_default == null) compile_default = nil;;
+          if (!$truthy([self.$s("self"), nil]['$include?'](self.$recvr()))) {
+            return compile_default.$call();
+          };
+          scope_variables = $send(self.$scope().$scope_locals(), 'map', [], "to_s".$to_proc()).$inspect();
+          return self.$push(scope_variables);}, {$$arity: 1, $$s: self});
+        $send(self, 'add_special', ["binding"], function $CallNode$33(compile_default){var self = $CallNode$33.$$s == null ? this : $CallNode$33.$$s;
 
           
+          
+          if (compile_default == null) compile_default = nil;;
+          if (!$truthy(self.$recvr()['$nil?']())) {
+            return compile_default.$call();
+          };
+          self.$scope().$nesting();
           self.$push("Opal.Binding.$new(");
           self.$push("  function($code, $value) {");
           self.$push("    if (typeof $value === 'undefined') {");
@@ -34063,130 +30801,157 @@ Opal.modules["opal/nodes/call"] = function(Opal) {
           self.$push("    }");
           self.$push("  },");
           self.$push("  ", $send(self.$scope().$scope_locals(), 'map', [], "to_s".$to_proc()).$inspect(), ",");
-          self.$push("  self,");
+          self.$push("  ", self.$scope().$self(), ",");
           self.$push("  ", self.$source_location());
-          return self.$push(")");}, $CallNode$50.$$s = self, $CallNode$50.$$arity = 0, $CallNode$50));
+          return self.$push(")");}, {$$arity: 1, $$s: self});
+        $send(self, 'add_special', ["__await__"], function $CallNode$34(compile_default){var self = $CallNode$34.$$s == null ? this : $CallNode$34.$$s, $writer = nil;
+
+          
+          
+          if (compile_default == null) compile_default = nil;;
+          if ($truthy(self.$compiler().$async_await())) {
+            
+            self.$push(self.$fragment("(await ("));
+            self.$push(self.$process(self.$recvr()));
+            self.$push(self.$fragment("))"));
+            
+            $writer = [true];
+            $send(self.$scope(), 'await_encountered=', $to_a($writer));
+            return $writer[$rb_minus($writer["length"], 1)];;
+          } else {
+            return compile_default.$call()
+          };}, {$$arity: 1, $$s: self});
         
-        Opal.def(self, '$push_nesting?', $CallNode_push_nesting$ques$51 = function() {
-          var self = this, recv = nil, $ret_or_12 = nil, $ret_or_13 = nil, $ret_or_14 = nil;
+        $def(self, '$push_nesting?', function $CallNode_push_nesting$ques$35() {
+          var self = this, recv = nil, $ret_or_1 = nil, $ret_or_2 = nil, $ret_or_3 = nil;
 
           
           recv = self.$children().$first();
-          if ($truthy(($ret_or_12 = self.$children().$size()['$=='](2)))) {
+          if ($truthy(($ret_or_1 = self.$children().$size()['$=='](2)))) {
             
-            if ($truthy(($ret_or_13 = recv['$nil?']()))) {
-              return $ret_or_13
+            if ($truthy(($ret_or_2 = recv['$nil?']()))) {
+              return $ret_or_2
             } else {
               
-              if ($truthy(($ret_or_14 = recv.$type()['$==']("const")))) {
+              if ($truthy(($ret_or_3 = recv.$type()['$==']("const")))) {
                 return recv.$children().$last()['$==']("Module")
               } else {
-                return $ret_or_14
+                return $ret_or_3
               };
             };
           } else {
-            return $ret_or_12
+            return $ret_or_1
           };
-        }, $CallNode_push_nesting$ques$51.$$arity = 0);
+        }, 0);
         return (function($base, $super, $parent_nesting) {
           var self = $klass($base, $super, 'DependencyResolver');
 
-          var $nesting = [self].concat($parent_nesting), $DependencyResolver_initialize$52, $DependencyResolver_resolve$53, $DependencyResolver_handle_part$54, $DependencyResolver_expand_path$56;
+          var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-          self.$$prototype.sexp = self.$$prototype.compiler = nil;
+          $proto.compiler = $proto.sexp = $proto.missing_dynamic_require = nil;
           
           
-          Opal.def(self, '$initialize', $DependencyResolver_initialize$52 = function $$initialize(compiler, sexp) {
-            var self = this;
+          $def(self, '$initialize', function $$initialize(compiler, sexp, missing_dynamic_require) {
+            var self = this, $ret_or_1 = nil;
 
             
+            
+            if (missing_dynamic_require == null) missing_dynamic_require = nil;;
             self.compiler = compiler;
-            return (self.sexp = sexp);
-          }, $DependencyResolver_initialize$52.$$arity = 2);
+            self.sexp = sexp;
+            return (self.missing_dynamic_require = ($truthy(($ret_or_1 = missing_dynamic_require)) ? ($ret_or_1) : (self.compiler.$dynamic_require_severity())));
+          }, -3);
           
-          Opal.def(self, '$resolve', $DependencyResolver_resolve$53 = function $$resolve() {
+          $def(self, '$resolve', function $$resolve() {
             var self = this;
 
             return self.$handle_part(self.sexp)
-          }, $DependencyResolver_resolve$53.$$arity = 0);
+          }, 0);
           
-          Opal.def(self, '$handle_part', $DependencyResolver_handle_part$54 = function $$handle_part(sexp) {
-            var $a, $b, $$55, self = this, type = nil, recv = nil, meth = nil, args = nil, parts = nil, $ret_or_15 = nil, $ret_or_16 = nil, msg = nil, $case = nil;
+          $def(self, '$handle_part', function $$handle_part(sexp, missing_dynamic_require) {
+            var $a, $b, self = this, $ret_or_1 = nil, recv = nil, meth = nil, args = nil, parts = nil;
 
             
-            type = sexp.$type();
-            if (type['$==']("str")) {
-              return sexp.$children()['$[]'](0)
-            } else if (type['$==']("send")) {
-              
-              $b = sexp.$children(), $a = Opal.to_ary($b), (recv = ($a[0] == null ? nil : $a[0])), (meth = ($a[1] == null ? nil : $a[1])), (args = $slice.call($a, 2)), $b;
-              parts = $send(args, 'map', [], ($$55 = function(s){var self = $$55.$$s == null ? this : $$55.$$s;
+            
+            if (missing_dynamic_require == null) missing_dynamic_require = self.missing_dynamic_require;;
+            if ($truthy(sexp)) {
+              if ($eqeqeq("str", ($ret_or_1 = sexp.$type()))) {
+                return sexp.$children()['$[]'](0)
+              } else if ($eqeqeq("dstr", $ret_or_1)) {
+                return $send(sexp.$children(), 'map', [], function $$36(i){var self = $$36.$$s == null ? this : $$36.$$s;
 
+                  
+                  
+                  if (i == null) i = nil;;
+                  return self.$handle_part(i);}, {$$arity: 1, $$s: self}).$join()
+              } else if ($eqeqeq("begin", $ret_or_1)) {
+                if ($eqeq(sexp.$children().$length(), 1)) {
+                  return self.$handle_part(sexp.$children()['$[]'](0))
+                }
+              } else if ($eqeqeq("send", $ret_or_1)) {
                 
-                
-                if (s == null) {
-                  s = nil;
+                $b = sexp.$children(), $a = $to_ary($b), (recv = ($a[0] == null ? nil : $a[0])), (meth = ($a[1] == null ? nil : $a[1])), (args = $slice.call($a, 2)), $b;
+                parts = $send(args, 'map', [], function $$37(s){var self = $$37.$$s == null ? this : $$37.$$s;
+
+                  
+                  
+                  if (s == null) s = nil;;
+                  return self.$handle_part(s, "ignore");}, {$$arity: 1, $$s: self});
+                if ($truthy(parts['$include?'](nil))) {
+                  return nil
+                };
+                if ((($truthy(recv['$is_a?']($$$($$$($Opal, 'AST'), 'Node'))) && ($eqeq(recv.$type(), "const"))) && ($eqeq(recv.$children().$last(), "File")))) {
+                  if ($eqeq(meth, "expand_path")) {
+                    return $send(self, 'expand_path', $to_a(parts))
+                  } else if ($eqeq(meth, "join")) {
+                    return self.$expand_path(parts.$join("/"))
+                  } else if ($eqeq(meth, "dirname")) {
+                    return self.$expand_path(parts['$[]'](0).$split("/")['$[]']($range(0, -1, true)).$join("/"))
+                  }
+                } else if ($eqeq(meth, "__dir__")) {
+                  return $$('File').$dirname($$$($$('Opal'), 'Compiler').$module_name(self.compiler.$file()))
                 };
-                return self.$handle_part(s);}, $$55.$$s = self, $$55.$$arity = 1, $$55));
-              if ($truthy((function() {if ($truthy(($ret_or_15 = (function() {if ($truthy(($ret_or_16 = recv['$is_a?']($$$($$$($$$('::', 'Opal'), 'AST'), 'Node'))))) {
-                return recv.$type()['$==']("const")
-              } else {
-                return $ret_or_16
-              }; return nil; })()))) {
-                return recv.$children().$last()['$==']("File")
               } else {
-                return $ret_or_15
-              }; return nil; })())) {
-                if (meth['$==']("expand_path")) {
-                  return $send(self, 'expand_path', Opal.to_a(parts))
-                } else if (meth['$==']("join")) {
-                  return self.$expand_path(parts.$join("/"))
-                } else if (meth['$==']("dirname")) {
-                  return self.$expand_path(parts['$[]'](0).$split("/")['$[]']($range(0, -1, true)).$join("/"))}};};
-            msg = "Cannot handle dynamic require";
-            return (function() {$case = self.compiler.$dynamic_require_severity();
-            if ("error"['$===']($case)) {return self.compiler.$error(msg, self.sexp.$line())}
-            else if ("warning"['$===']($case)) {return self.compiler.$warning(msg, self.sexp.$line())}
-            else { return nil }})();
-          }, $DependencyResolver_handle_part$54.$$arity = 1);
-          return (Opal.def(self, '$expand_path', $DependencyResolver_expand_path$56 = function $$expand_path(path, base) {
-            var $$57, self = this;
-
-            
-            
-            if (base == null) {
-              base = "";
+                nil
+              }
             };
-            return $send(((("" + (base)) + "/") + (path)).$split("/"), 'each_with_object', [[]], ($$57 = function(part, p){var self = $$57.$$s == null ? this : $$57.$$s;
-
+            if ($eqeqeq("error", ($ret_or_1 = missing_dynamic_require))) {
+              return self.compiler.$error("Cannot handle dynamic require", self.sexp.$line())
+            } else if ($eqeqeq("warning", $ret_or_1)) {
+              return self.compiler.$warning("Cannot handle dynamic require", self.sexp.$line())
+            } else {
+              return nil
+            };
+          }, -2);
+          return $def(self, '$expand_path', function $$expand_path(path, base) {
+            
+            
+            
+            if (base == null) base = "";;
+            return $send(((("" + (base)) + "/") + (path)).$split("/"), 'each_with_object', [[]], function $$38(part, p){
               
               
-              if (part == null) {
-                part = nil;
-              };
+              if (part == null) part = nil;;
               
-              if (p == null) {
-                p = nil;
-              };
-              if (part['$==']("")) {
+              if (p == null) p = nil;;
+              if ($eqeq(part, "")) {
                 return nil
-              } else if (part['$==']("..")) {
+              } else if ($eqeq(part, "..")) {
                 return p.$pop()
               } else {
                 return p['$<<'](part)
-              };}, $$57.$$s = self, $$57.$$arity = 2, $$57)).$join("/");
-          }, $DependencyResolver_expand_path$56.$$arity = -2), nil) && 'expand_path';
+              };}, 2).$join("/");
+          }, -2);
         })($nesting[0], null, $nesting);
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+      })($nesting[0], $$('Base'), $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/csend"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send;
+Opal.modules["opal/nodes/csend"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$helper', '$conditional_send', '$recv', '$receiver_sexp', '$push', '$compile_method_name', '$compile_arguments', '$compile_block_pass']);
+  Opal.add_stubs('require,handle,helper,conditional_send,recv,receiver_sexp,push,compile_method_name,compile_arguments,compile_block_pass');
   
   self.$require("opal/nodes/call");
   return (function($base, $parent_nesting) {
@@ -34197,43 +30962,39 @@ Opal.modules["opal/nodes/csend"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'CSendNode');
 
-        var $nesting = [self].concat($parent_nesting), $CSendNode_default_compile$1;
-
+        
         
         self.$handle("csend");
-        return (Opal.def(self, '$default_compile', $CSendNode_default_compile$1 = function $$default_compile() {
-          var $$2, self = this;
+        return $def(self, '$default_compile', function $$default_compile() {
+          var self = this;
 
           
           self.$helper("send");
-          return $send(self, 'conditional_send', [self.$recv(self.$receiver_sexp())], ($$2 = function(receiver_temp){var self = $$2.$$s == null ? this : $$2.$$s;
+          return $send(self, 'conditional_send', [self.$recv(self.$receiver_sexp())], function $$1(receiver_temp){var self = $$1.$$s == null ? this : $$1.$$s;
 
             
             
-            if (receiver_temp == null) {
-              receiver_temp = nil;
-            };
+            if (receiver_temp == null) receiver_temp = nil;;
             self.$push("$send(", receiver_temp);
             self.$compile_method_name();
             self.$compile_arguments();
             self.$compile_block_pass();
-            return self.$push(")");}, $$2.$$s = self, $$2.$$arity = 1, $$2));
-        }, $CSendNode_default_compile$1.$$arity = 0), nil) && 'default_compile';
-      })($nesting[0], $$($nesting, 'CallNode'), $nesting)
+            return self.$push(")");}, {$$arity: 1, $$s: self});
+        }, 0);
+      })($nesting[0], $$('CallNode'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/call_special"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $truthy = Opal.truthy;
+Opal.modules["opal/nodes/call_special"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $def = Opal.def, $send2 = Opal.send2, $find_super = Opal.find_super, $to_a = Opal.to_a, $truthy = Opal.truthy, $eqeq = Opal.eqeq, $send = Opal.send;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$push', '$recv', '$recvr', '$expr', '$property', '$value', '$<<', '$default_compile', '$meth', '$receiver_sexp', '$method_jsid', '$compile_arguments', '$iter', '$s', '$lhs', '$rhs', '$process']);
+  Opal.add_stubs('require,handle,children,push,recv,recvr,expr,property,value,<<,default_compile,meth,receiver_sexp,method_jsid,compile_arguments,iter,s,lhs,rhs,==,type,first,map,flatten,scan,to_proc,empty?,stmt?,process');
   
   self.$require("opal/nodes/base");
   self.$require("opal/nodes/call");
@@ -34245,118 +31006,128 @@ Opal.modules["opal/nodes/call_special"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
-      (function($base, $super, $parent_nesting) {
+      (function($base, $super) {
         var self = $klass($base, $super, 'JsAttrNode');
 
-        var $nesting = [self].concat($parent_nesting), $JsAttrNode_compile$1;
-
+        
         
         self.$handle("jsattr");
         self.$children("recvr", "property");
-        return (Opal.def(self, '$compile', $JsAttrNode_compile$1 = function $$compile() {
+        return $def(self, '$compile', function $$compile() {
           var self = this;
 
           return self.$push(self.$recv(self.$recvr()), "[", self.$expr(self.$property()), "]")
-        }, $JsAttrNode_compile$1.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'JsAttrAsgnNode');
 
-        var $nesting = [self].concat($parent_nesting), $JsAttrAsgnNode_compile$2;
-
+        
         
         self.$handle("jsattrasgn");
         self.$children("recvr", "property", "value");
-        return (Opal.def(self, '$compile', $JsAttrAsgnNode_compile$2 = function $$compile() {
+        return $def(self, '$compile', function $$compile() {
           var self = this;
 
           return self.$push(self.$recv(self.$recvr()), "[", self.$expr(self.$property()), "] = ", self.$expr(self.$value()))
-        }, $JsAttrAsgnNode_compile$2.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'JsCallNode');
 
-        var $nesting = [self].concat($parent_nesting), $JsCallNode_initialize$3, $JsCallNode_compile$4, $JsCallNode_method_jsid$5, $JsCallNode_compile_using_send$6;
+        var $proto = self.$$prototype;
 
-        self.$$prototype.iter = self.$$prototype.arglist = nil;
+        $proto.iter = $proto.arglist = nil;
         
         self.$handle("jscall");
         
-        Opal.def(self, '$initialize', $JsCallNode_initialize$3 = function $$initialize($a) {
-          var $post_args, $iter = $JsCallNode_initialize$3.$$p, $yield = $iter || nil, self = this, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        $def(self, '$initialize', function $$initialize($a) {
+          var $post_args, $rest_arg, $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $JsCallNode_initialize$3.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$initialize.$$p;
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
-          ;
-          $send2(self, $find_super(self, 'initialize', $JsCallNode_initialize$3, false, true), 'initialize', $zuper, $iter);
+          $post_args = Opal.slice.call(arguments);
+          
+          $rest_arg = $post_args;;
+          $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', $to_a($rest_arg), $yield);
           if ($truthy(self.iter)) {
-            self.arglist = self.arglist['$<<'](self.iter)};
+            self.arglist = self.arglist['$<<'](self.iter)
+          };
           return (self.iter = nil);
-        }, $JsCallNode_initialize$3.$$arity = -1);
+        }, -1);
         
-        Opal.def(self, '$compile', $JsCallNode_compile$4 = function $$compile() {
+        $def(self, '$compile', function $$compile() {
           var self = this;
 
           return self.$default_compile()
-        }, $JsCallNode_compile$4.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$method_jsid', $JsCallNode_method_jsid$5 = function $$method_jsid() {
+        $def(self, '$method_jsid', function $$method_jsid() {
           var self = this;
 
-          return "" + "." + (self.$meth())
-        }, $JsCallNode_method_jsid$5.$$arity = 0);
-        return (Opal.def(self, '$compile_using_send', $JsCallNode_compile_using_send$6 = function $$compile_using_send() {
+          return "." + (self.$meth())
+        }, 0);
+        return $def(self, '$compile_using_send', function $$compile_using_send() {
           var self = this;
 
           
           self.$push(self.$recv(self.$receiver_sexp()), self.$method_jsid(), ".apply(null");
           self.$compile_arguments();
           if ($truthy(self.$iter())) {
-            self.$push(".concat(", self.$expr(self.$iter()), ")")};
+            self.$push(".concat(", self.$expr(self.$iter()), ")")
+          };
           return self.$push(")");
-        }, $JsCallNode_compile_using_send$6.$$arity = 0), nil) && 'compile_using_send';
-      })($nesting[0], $$($nesting, 'CallNode'), $nesting);
-      return (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('CallNode'));
+      return (function($base, $super) {
         var self = $klass($base, $super, 'Match3Node');
 
-        var $nesting = [self].concat($parent_nesting), $Match3Node_compile$7;
+        var $proto = self.$$prototype;
 
-        self.$$prototype.level = nil;
+        $proto.level = nil;
         
         self.$handle("match_with_lvasgn");
         self.$children("lhs", "rhs");
-        return (Opal.def(self, '$compile', $Match3Node_compile$7 = function $$compile() {
-          var self = this, sexp = nil;
+        return $def(self, '$compile', function $$compile() {
+          var self = this, sexp = nil, re = nil, names = nil, names_def = nil;
 
           
           sexp = self.$s("send", self.$lhs(), "=~", self.$rhs());
+          if (($eqeq(self.$lhs().$type(), "regexp") && ($eqeq(self.$lhs().$children().$first().$type(), "str")))) {
+            
+            re = self.$lhs().$children().$first().$children().$first();
+            names = $send(re.$scan(/\(\?<([^>]*)>/).$flatten(), 'map', [], "to_sym".$to_proc());
+            if (!$truthy(names['$empty?']())) {
+              
+              names_def = self.$s("lvasgn", "$m3names", self.$s("if", self.$s("gvar", "$~"), self.$s("send", self.$s("gvar", "$~"), "named_captures"), self.$s("hash")));
+              names = $send(names, 'map', [], function $$1(name){var self = $$1.$$s == null ? this : $$1.$$s;
+
+                
+                
+                if (name == null) name = nil;;
+                return self.$s("lvasgn", name, self.$s("send", self.$s("lvar", "$m3names"), "[]", self.$s("sym", name)));}, {$$arity: 1, $$s: self});
+              if ($truthy(self['$stmt?']())) {
+                sexp = $send(self, 's', ["begin", sexp, names_def].concat($to_a(names)))
+              } else {
+                sexp = $send(self, 's', ["begin", self.$s("lvasgn", "$m3tmp", sexp), names_def].concat($to_a(names)).concat([self.$s("lvar", "$m3tmp")]))
+              };
+            };
+          };
           return self.$push(self.$process(sexp, self.level));
-        }, $Match3Node_compile$7.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
+        }, 0);
+      })($nesting[0], $$('Base'));
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/scope"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $send = Opal.send, $truthy = Opal.truthy, $hash2 = Opal.hash2;
-
-  Opal.add_stubs(['$require', '$attr_accessor', '$attr_reader', '$indent', '$scope', '$compiler', '$scope=', '$-', '$==', '$top?', '$top_scope', '$parent', '$iter?', '$!', '$class?', '$dup', '$push', '$map', '$ivars', '$gvars', '$parser_indent', '$empty?', '$join', '$+', '$fragment', '$def_in_class?', '$add_proto_ivar', '$include?', '$<<', '$has_local?', '$|', '$scope_locals', '$has_temp?', '$pop', '$next_temp', '$loop', '$succ', '$uses_block!', '$identify!', '$compact', '$name', '$scope_name', '$mid', '$unique_temp', '$add_scope_temp', '$def?', '$lambda?', '$type', '$nil?', '$rescue_else_sexp', '$last', '$class', '$collect_refinements_temps', '$add_scope_local', '$new_refinements_temp']);
+Opal.modules["opal/nodes/scope"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $to_a = Opal.to_a, $def = Opal.def, $send = Opal.send, $rb_minus = Opal.rb_minus, $truthy = Opal.truthy, $not = Opal.not, $rb_plus = Opal.rb_plus, $eqeq = Opal.eqeq, $hash2 = Opal.hash2;
+
+  Opal.add_stubs('require,attr_accessor,attr_reader,indent,scope,compiler,scope=,-,==,iter?,!,class?,dup,push,map,ivars,gvars,empty?,<<,parser_indent,join,+,fragment,def_in_class?,add_proto_ivar,include?,has_local?,|,scope_locals,reject,start_with?,to_s,has_temp?,pop,next_temp,loop,succ,uses_block!,identify!,valid_name?,mid,compact,parent,name,scope_name,unique_temp,lambda?,def?,type,nil?,rescue_else_sexp,last,class,collect_refinements_temps,add_scope_local,new_refinements_temp,identity,block_name=,add_temp,block_name,line');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -34367,14 +31138,14 @@ Opal.modules["opal/nodes/scope"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'ScopeNode');
 
-        var $nesting = [self].concat($parent_nesting), $ScopeNode_initialize$1, $ScopeNode_in_scope$2, $ScopeNode_class_scope$ques$4, $ScopeNode_class$ques$5, $ScopeNode_module$ques$6, $ScopeNode_sclass$ques$7, $ScopeNode_top$ques$8, $ScopeNode_top_scope$9, $ScopeNode_iter$ques$10, $ScopeNode_def$ques$11, $ScopeNode_lambda$ques$12, $ScopeNode_is_lambda$excl$13, $ScopeNode_defines_lambda$14, $ScopeNode_lambda_definition$ques$15, $ScopeNode_def_in_class$ques$16, $ScopeNode_to_vars$17, $ScopeNode_add_scope_ivar$22, $ScopeNode_add_scope_gvar$23, $ScopeNode_add_proto_ivar$24, $ScopeNode_add_arg$25, $ScopeNode_add_scope_local$26, $ScopeNode_has_local$ques$27, $ScopeNode_scope_locals$28, $ScopeNode_add_scope_temp$29, $ScopeNode_has_temp$ques$30, $ScopeNode_new_temp$31, $ScopeNode_next_temp$32, $ScopeNode_queue_temp$34, $ScopeNode_push_while$35, $ScopeNode_pop_while$36, $ScopeNode_in_while$ques$37, $ScopeNode_uses_block$excl$38, $ScopeNode_identify$excl$39, $ScopeNode_find_parent_def$40, $ScopeNode_super_chain$41, $ScopeNode_uses_block$ques$42, $ScopeNode_has_rescue_else$ques$43, $ScopeNode_in_rescue$44, $ScopeNode_current_rescue$45, $ScopeNode_in_resbody$46, $ScopeNode_in_resbody$ques$47, $ScopeNode_in_ensure$48, $ScopeNode_in_ensure$ques$49, $ScopeNode_gen_retry_id$50, $ScopeNode_accepts_using$ques$51, $ScopeNode_collect_refinements_temps$52, $ScopeNode_new_refinements_temp$53, $ScopeNode_refinements_temp$54;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.type = self.$$prototype.is_lambda = self.$$prototype.lambda_definition = self.$$prototype.defs = self.$$prototype.parent = self.$$prototype.temps = self.$$prototype.locals = self.$$prototype.compiler = self.$$prototype.proto_ivars = self.$$prototype.ivars = self.$$prototype.gvars = self.$$prototype.args = self.$$prototype.queue = self.$$prototype.while_stack = self.$$prototype.identity = self.$$prototype.uses_block = self.$$prototype.rescues = self.$$prototype.in_resbody = self.$$prototype.in_ensure = self.$$prototype.next_retry_id = self.$$prototype.refinements_temp = nil;
+        $proto.type = $proto.is_lambda = $proto.lambda_definition = $proto.defs = $proto.parent = $proto.temps = $proto.locals = $proto.proto_ivars = $proto.compiler = $proto.ivars = $proto.gvars = $proto.args = $proto.queue = $proto.while_stack = $proto.identity = $proto.uses_block = $proto.rescues = $proto.in_resbody = $proto.in_ensure = $proto.next_retry_id = $proto.refinements_temp = $proto.block_prepared = nil;
         
         self.$attr_accessor("parent");
         self.$attr_accessor("name");
@@ -34386,24 +31157,19 @@ Opal.modules["opal/nodes/scope"] = function(Opal) {
         self.$attr_accessor("mid");
         self.$attr_accessor("defs");
         self.$attr_reader("methods");
-        self.$attr_accessor("uses_super");
-        self.$attr_accessor("uses_zuper");
         self.$attr_accessor("catch_return", "has_break", "has_retry");
         self.$attr_accessor("rescue_else_sexp");
         
-        Opal.def(self, '$initialize', $ScopeNode_initialize$1 = function $$initialize($a) {
-          var $post_args, $iter = $ScopeNode_initialize$1.$$p, $yield = $iter || nil, self = this, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        $def(self, '$initialize', function $$initialize($a) {
+          var $post_args, $rest_arg, $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $ScopeNode_initialize$1.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$initialize.$$p;
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
-          ;
-          $send2(self, $find_super(self, 'initialize', $ScopeNode_initialize$1, false, true), 'initialize', $zuper, $iter);
+          $post_args = Opal.slice.call(arguments);
+          
+          $rest_arg = $post_args;;
+          $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', $to_a($rest_arg), $yield);
           self.locals = [];
           self.temps = [];
           self.args = [];
@@ -34419,29 +31185,29 @@ Opal.modules["opal/nodes/scope"] = function(Opal) {
           self.uses_block = false;
           self.in_ensure = false;
           return (self.proto_ivars = []);
-        }, $ScopeNode_initialize$1.$$arity = -1);
+        }, -1);
         
-        Opal.def(self, '$in_scope', $ScopeNode_in_scope$2 = function $$in_scope() {
-          var $$3, $iter = $ScopeNode_in_scope$2.$$p, $yield = $iter || nil, self = this;
+        $def(self, '$in_scope', function $$in_scope() {
+          var $yield = $$in_scope.$$p || nil, self = this;
 
-          if ($iter) $ScopeNode_in_scope$2.$$p = null;
-          return $send(self, 'indent', [], ($$3 = function(){var self = $$3.$$s == null ? this : $$3.$$s, $writer = nil;
+          delete $$in_scope.$$p;
+          return $send(self, 'indent', [], function $$1(){var self = $$1.$$s == null ? this : $$1.$$s, $writer = nil;
             if (self.parent == null) self.parent = nil;
 
             
             self.parent = self.$compiler().$scope();
             
             $writer = [self];
-            $send(self.$compiler(), 'scope=', Opal.to_a($writer));
+            $send(self.$compiler(), 'scope=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
             Opal.yield1($yield, self);
             
             $writer = [self.parent];
-            $send(self.$compiler(), 'scope=', Opal.to_a($writer));
-            return $writer[$rb_minus($writer["length"], 1)];;}, $$3.$$s = self, $$3.$$arity = 0, $$3))
-        }, $ScopeNode_in_scope$2.$$arity = 0);
+            $send(self.$compiler(), 'scope=', $to_a($writer));
+            return $writer[$rb_minus($writer["length"], 1)];;}, {$$arity: 0, $$s: self})
+        }, 0);
         
-        Opal.def(self, '$class_scope?', $ScopeNode_class_scope$ques$4 = function() {
+        $def(self, '$class_scope?', function $ScopeNode_class_scope$ques$2() {
           var self = this, $ret_or_1 = nil;
 
           if ($truthy(($ret_or_1 = self.type['$==']("class")))) {
@@ -34449,173 +31215,134 @@ Opal.modules["opal/nodes/scope"] = function(Opal) {
           } else {
             return self.type['$==']("module")
           }
-        }, $ScopeNode_class_scope$ques$4.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$class?', $ScopeNode_class$ques$5 = function() {
+        $def(self, '$class?', function $ScopeNode_class$ques$3() {
           var self = this;
 
           return self.type['$==']("class")
-        }, $ScopeNode_class$ques$5.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$module?', $ScopeNode_module$ques$6 = function() {
+        $def(self, '$module?', function $ScopeNode_module$ques$4() {
           var self = this;
 
           return self.type['$==']("module")
-        }, $ScopeNode_module$ques$6.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$sclass?', $ScopeNode_sclass$ques$7 = function() {
+        $def(self, '$sclass?', function $ScopeNode_sclass$ques$5() {
           var self = this;
 
           return self.type['$==']("sclass")
-        }, $ScopeNode_sclass$ques$7.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$top?', $ScopeNode_top$ques$8 = function() {
+        $def(self, '$top?', function $ScopeNode_top$ques$6() {
           var self = this;
 
           return self.type['$==']("top")
-        }, $ScopeNode_top$ques$8.$$arity = 0);
-        
-        Opal.def(self, '$top_scope', $ScopeNode_top_scope$9 = function $$top_scope() {
-          var self = this;
-
-          if ($truthy(self['$top?']())) {
-            return self
-          } else {
-            return self.$parent().$top_scope()
-          }
-        }, $ScopeNode_top_scope$9.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$iter?', $ScopeNode_iter$ques$10 = function() {
+        $def(self, '$iter?', function $ScopeNode_iter$ques$7() {
           var self = this;
 
           return self.type['$==']("iter")
-        }, $ScopeNode_iter$ques$10.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$def?', $ScopeNode_def$ques$11 = function() {
-          var self = this, $ret_or_2 = nil;
+        $def(self, '$def?', function $ScopeNode_def$ques$8() {
+          var self = this, $ret_or_1 = nil;
 
-          if ($truthy(($ret_or_2 = self.type['$==']("def")))) {
-            return $ret_or_2
+          if ($truthy(($ret_or_1 = self.type['$==']("def")))) {
+            return $ret_or_1
           } else {
             return self.type['$==']("defs")
           }
-        }, $ScopeNode_def$ques$11.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$lambda?', $ScopeNode_lambda$ques$12 = function() {
-          var self = this, $ret_or_3 = nil;
+        $def(self, '$lambda?', function $ScopeNode_lambda$ques$9() {
+          var self = this, $ret_or_1 = nil;
 
-          if ($truthy(($ret_or_3 = self['$iter?']()))) {
+          if ($truthy(($ret_or_1 = self['$iter?']()))) {
             return self.is_lambda
           } else {
-            return $ret_or_3
+            return $ret_or_1
           }
-        }, $ScopeNode_lambda$ques$12.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$is_lambda!', $ScopeNode_is_lambda$excl$13 = function() {
+        $def(self, '$is_lambda!', function $ScopeNode_is_lambda$excl$10() {
           var self = this;
 
           return (self.is_lambda = true)
-        }, $ScopeNode_is_lambda$excl$13.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$defines_lambda', $ScopeNode_defines_lambda$14 = function $$defines_lambda() {
-          var $iter = $ScopeNode_defines_lambda$14.$$p, $yield = $iter || nil, self = this;
+        $def(self, '$defines_lambda', function $$defines_lambda() {
+          var $yield = $$defines_lambda.$$p || nil, self = this;
 
-          if ($iter) $ScopeNode_defines_lambda$14.$$p = null;
+          delete $$defines_lambda.$$p;
           
           self.lambda_definition = true;
           Opal.yieldX($yield, []);
           return (self.lambda_definition = false);
-        }, $ScopeNode_defines_lambda$14.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$lambda_definition?', $ScopeNode_lambda_definition$ques$15 = function() {
+        $def(self, '$lambda_definition?', function $ScopeNode_lambda_definition$ques$11() {
           var self = this;
 
           return self.lambda_definition
-        }, $ScopeNode_lambda_definition$ques$15.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$def_in_class?', $ScopeNode_def_in_class$ques$16 = function() {
-          var self = this, $ret_or_4 = nil, $ret_or_5 = nil, $ret_or_6 = nil;
+        $def(self, '$def_in_class?', function $ScopeNode_def_in_class$ques$12() {
+          var self = this, $ret_or_1 = nil, $ret_or_2 = nil, $ret_or_3 = nil;
 
-          if ($truthy(($ret_or_4 = (function() {if ($truthy(($ret_or_5 = (function() {if ($truthy(($ret_or_6 = self.defs['$!']()))) {
-            return self.type['$==']("def")
-          } else {
-            return $ret_or_6
-          }; return nil; })()))) {
-            return self.parent
-          } else {
-            return $ret_or_5
-          }; return nil; })()))) {
+          if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = ($truthy(($ret_or_3 = self.defs['$!']())) ? (self.type['$==']("def")) : ($ret_or_3)))) ? (self.parent) : ($ret_or_2))))) {
             return self.parent['$class?']()
           } else {
-            return $ret_or_4
+            return $ret_or_1
           }
-        }, $ScopeNode_def_in_class$ques$16.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$to_vars', $ScopeNode_to_vars$17 = function $$to_vars() {
-          var $$18, $$19, $$20, $$21, self = this, vars = nil, iv = nil, gv = nil, indent = nil, str = nil, $ret_or_7 = nil, pvars = nil, result = nil;
+        $def(self, '$to_vars', function $$to_vars() {
+          var self = this, vars = nil, iv = nil, gv = nil, indent = nil, str = nil, pvars = nil;
 
           
           vars = self.temps.$dup();
-          $send(vars, 'push', Opal.to_a($send(self.locals, 'map', [], ($$18 = function(l){var self = $$18.$$s == null ? this : $$18.$$s;
-
+          $send(vars, 'push', $to_a($send(self.locals, 'map', [], function $$13(l){
             
             
-            if (l == null) {
-              l = nil;
-            };
-            return "" + (l) + " = nil";}, $$18.$$s = self, $$18.$$arity = 1, $$18))));
-          iv = $send(self.$ivars(), 'map', [], ($$19 = function(ivar){var self = $$19.$$s == null ? this : $$19.$$s;
-
+            if (l == null) l = nil;;
+            return "" + (l) + " = nil";}, 1)));
+          iv = $send(self.$ivars(), 'map', [], function $$14(ivar){
             
             
-            if (ivar == null) {
-              ivar = nil;
-            };
-            return "" + "if (self" + (ivar) + " == null) self" + (ivar) + " = nil;\n";}, $$19.$$s = self, $$19.$$arity = 1, $$19));
-          gv = $send(self.$gvars(), 'map', [], ($$20 = function(gvar){var self = $$20.$$s == null ? this : $$20.$$s;
-
+            if (ivar == null) ivar = nil;;
+            return "if (self" + (ivar) + " == null) self" + (ivar) + " = nil;\n";}, 1);
+          gv = $send(self.$gvars(), 'map', [], function $$15(gvar){
             
             
-            if (gvar == null) {
-              gvar = nil;
-            };
-            return "" + "if ($gvars" + (gvar) + " == null) $gvars" + (gvar) + " = nil;\n";}, $$20.$$s = self, $$20.$$arity = 1, $$20));
+            if (gvar == null) gvar = nil;;
+            return "if ($gvars" + (gvar) + " == null) $gvars" + (gvar) + " = nil;\n";}, 1);
+          if (($truthy(self['$class?']()) && ($not(self.proto_ivars['$empty?']())))) {
+            vars['$<<']("$proto = self.$$prototype")
+          };
           indent = self.compiler.$parser_indent();
-          str = (function() {if ($truthy(vars['$empty?']())) {
-            return ""
-          } else {
-            return "" + "var " + (vars.$join(", ")) + ";\n"
-          }; return nil; })();
-          if ($truthy(self.$ivars()['$empty?']())) {
-          } else {
+          str = ($truthy(vars['$empty?']()) ? ("") : ("var " + (vars.$join(", ")) + ";\n"));
+          if (!$truthy(self.$ivars()['$empty?']())) {
             str = $rb_plus(str, "" + (indent) + (iv.$join(indent)))
           };
-          if ($truthy(self.$gvars()['$empty?']())) {
-          } else {
+          if (!$truthy(self.$gvars()['$empty?']())) {
             str = $rb_plus(str, "" + (indent) + (gv.$join(indent)))
           };
-          if ($truthy((function() {if ($truthy(($ret_or_7 = self['$class?']()))) {
-            return self.proto_ivars['$empty?']()['$!']()
-          } else {
-            return $ret_or_7
-          }; return nil; })())) {
+          if (($truthy(self['$class?']()) && ($not(self.proto_ivars['$empty?']())))) {
             
-            pvars = $send(self.proto_ivars, 'map', [], ($$21 = function(i){var self = $$21.$$s == null ? this : $$21.$$s;
-
+            pvars = $send(self.proto_ivars, 'map', [], function $$16(i){
               
               
-              if (i == null) {
-                i = nil;
-              };
-              return "" + "self.$$prototype" + (i);}, $$21.$$s = self, $$21.$$arity = 1, $$21)).$join(" = ");
-            result = "" + (str) + "\n" + (indent) + (pvars) + " = nil;";
-          } else {
-            result = str
+              if (i == null) i = nil;;
+              return "$proto" + (i);}, 1).$join(" = ");
+            str = "" + (str) + "\n" + (indent) + (pvars) + " = nil;";
           };
-          return self.$fragment(result);
-        }, $ScopeNode_to_vars$17.$$arity = 0);
+          return self.$fragment(str);
+        }, 0);
         
-        Opal.def(self, '$add_scope_ivar', $ScopeNode_add_scope_ivar$22 = function $$add_scope_ivar(ivar) {
+        $def(self, '$add_scope_ivar', function $$add_scope_ivar(ivar) {
           var self = this;
 
           if ($truthy(self['$def_in_class?']())) {
@@ -34625,9 +31352,9 @@ Opal.modules["opal/nodes/scope"] = function(Opal) {
           } else {
             return self.ivars['$<<'](ivar)
           }
-        }, $ScopeNode_add_scope_ivar$22.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$add_scope_gvar', $ScopeNode_add_scope_gvar$23 = function $$add_scope_gvar(gvar) {
+        $def(self, '$add_scope_gvar', function $$add_scope_gvar(gvar) {
           var self = this;
 
           if ($truthy(self.gvars['$include?'](gvar))) {
@@ -34635,9 +31362,9 @@ Opal.modules["opal/nodes/scope"] = function(Opal) {
           } else {
             return self.gvars['$<<'](gvar)
           }
-        }, $ScopeNode_add_scope_gvar$23.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$add_proto_ivar', $ScopeNode_add_proto_ivar$24 = function $$add_proto_ivar(ivar) {
+        $def(self, '$add_proto_ivar', function $$add_proto_ivar(ivar) {
           var self = this;
 
           if ($truthy(self.proto_ivars['$include?'](ivar))) {
@@ -34645,365 +31372,371 @@ Opal.modules["opal/nodes/scope"] = function(Opal) {
           } else {
             return self.proto_ivars['$<<'](ivar)
           }
-        }, $ScopeNode_add_proto_ivar$24.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$add_arg', $ScopeNode_add_arg$25 = function $$add_arg(arg) {
+        $def(self, '$add_arg', function $$add_arg(arg) {
           var self = this;
 
           
-          if ($truthy(self.args['$include?'](arg))) {
-          } else {
+          if (!$truthy(self.args['$include?'](arg))) {
             self.args['$<<'](arg)
           };
           return arg;
-        }, $ScopeNode_add_arg$25.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$add_scope_local', $ScopeNode_add_scope_local$26 = function $$add_scope_local(local) {
+        $def(self, '$add_scope_local', function $$add_scope_local(local) {
           var self = this;
 
           
           if ($truthy(self['$has_local?'](local))) {
-            return nil};
+            return nil
+          };
           return self.locals['$<<'](local);
-        }, $ScopeNode_add_scope_local$26.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$has_local?', $ScopeNode_has_local$ques$27 = function(local) {
-          var self = this, $ret_or_8 = nil, $ret_or_9 = nil, $ret_or_10 = nil;
+        $def(self, '$has_local?', function $ScopeNode_has_local$ques$17(local) {
+          var self = this;
 
           
-          if ($truthy((function() {if ($truthy(($ret_or_8 = (function() {if ($truthy(($ret_or_9 = self.locals['$include?'](local)))) {
-            return $ret_or_9
-          } else {
-            return self.args['$include?'](local)
-          }; return nil; })()))) {
-            return $ret_or_8
-          } else {
-            return self.temps['$include?'](local)
-          }; return nil; })())) {
-            return true};
-          if ($truthy((function() {if ($truthy(($ret_or_10 = self.parent))) {
-            return self.type['$==']("iter")
-          } else {
-            return $ret_or_10
-          }; return nil; })())) {
-            return self.parent['$has_local?'](local)};
+          if ((($truthy(self.locals['$include?'](local)) || ($truthy(self.args['$include?'](local)))) || ($truthy(self.temps['$include?'](local))))) {
+            return true
+          };
+          if (($truthy(self.parent) && ($eqeq(self.type, "iter")))) {
+            return self.parent['$has_local?'](local)
+          };
           return false;
-        }, $ScopeNode_has_local$ques$27.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$scope_locals', $ScopeNode_scope_locals$28 = function $$scope_locals() {
-          var self = this, $ret_or_11 = nil;
+        $def(self, '$scope_locals', function $$scope_locals() {
+          var self = this, locals = nil;
 
-          return self.locals['$|'](self.args)['$|']((function() {if ($truthy((function() {if ($truthy(($ret_or_11 = self.parent))) {
-            return self.type['$==']("iter")
-          } else {
-            return $ret_or_11
-          }; return nil; })())) {
-            return self.parent.$scope_locals()
-          } else {
-            return []
-          }; return nil; })())
-        }, $ScopeNode_scope_locals$28.$$arity = 0);
+          
+          locals = self.locals['$|'](self.args)['$|']((($truthy(self.parent) && ($eqeq(self.type, "iter"))) ? (self.parent.$scope_locals()) : ([])));
+          return $send(locals, 'reject', [], function $$18(i){
+            
+            
+            if (i == null) i = nil;;
+            return i.$to_s()['$start_with?']("$");}, 1);
+        }, 0);
         
-        Opal.def(self, '$add_scope_temp', $ScopeNode_add_scope_temp$29 = function $$add_scope_temp(tmp) {
+        $def(self, '$add_scope_temp', function $$add_scope_temp(tmp) {
           var self = this;
 
           
           if ($truthy(self['$has_temp?'](tmp))) {
-            return nil};
+            return nil
+          };
           return self.temps.$push(tmp);
-        }, $ScopeNode_add_scope_temp$29.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$has_temp?', $ScopeNode_has_temp$ques$30 = function(tmp) {
+        $def(self, '$has_temp?', function $ScopeNode_has_temp$ques$19(tmp) {
           var self = this;
 
           return self.temps['$include?'](tmp)
-        }, $ScopeNode_has_temp$ques$30.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$new_temp', $ScopeNode_new_temp$31 = function $$new_temp() {
+        $def(self, '$new_temp', function $$new_temp() {
           var self = this, tmp = nil;
 
           
-          if ($truthy(self.queue['$empty?']())) {
-          } else {
+          if (!$truthy(self.queue['$empty?']())) {
             return self.queue.$pop()
           };
           tmp = self.$next_temp();
           self.temps['$<<'](tmp);
           return tmp;
-        }, $ScopeNode_new_temp$31.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$next_temp', $ScopeNode_next_temp$32 = function $$next_temp() {
-          var $$33, self = this, tmp = nil;
+        $def(self, '$next_temp', function $$next_temp() {
+          var self = this, tmp = nil;
 
           
           tmp = nil;
-          (function(){var $brk = Opal.new_brk(); try {return $send(self, 'loop', [], ($$33 = function(){var self = $$33.$$s == null ? this : $$33.$$s;
+          (function(){var $brk = Opal.new_brk(); try {return $send(self, 'loop', [], function $$20(){var self = $$20.$$s == null ? this : $$20.$$s;
             if (self.unique == null) self.unique = nil;
 
             
-            tmp = "" + "$" + (self.unique);
+            tmp = "$" + (self.unique);
             self.unique = self.unique.$succ();
             if ($truthy(self['$has_local?'](tmp))) {
               return nil
             } else {
               
               Opal.brk(nil, $brk)
-            };}, $$33.$$s = self, $$33.$$brk = $brk, $$33.$$arity = 0, $$33))
+            };}, {$$arity: 0, $$s: self, $$brk: $brk})
           } catch (err) { if (err === $brk) { return err.$v } else { throw err } }})();
           return tmp;
-        }, $ScopeNode_next_temp$32.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$queue_temp', $ScopeNode_queue_temp$34 = function $$queue_temp(name) {
+        $def(self, '$queue_temp', function $$queue_temp(name) {
           var self = this;
 
           return self.queue['$<<'](name)
-        }, $ScopeNode_queue_temp$34.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$push_while', $ScopeNode_push_while$35 = function $$push_while() {
+        $def(self, '$push_while', function $$push_while() {
           var self = this, info = nil;
 
           
           info = $hash2([], {});
           self.while_stack.$push(info);
           return info;
-        }, $ScopeNode_push_while$35.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$pop_while', $ScopeNode_pop_while$36 = function $$pop_while() {
+        $def(self, '$pop_while', function $$pop_while() {
           var self = this;
 
           return self.while_stack.$pop()
-        }, $ScopeNode_pop_while$36.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$in_while?', $ScopeNode_in_while$ques$37 = function() {
+        $def(self, '$in_while?', function $ScopeNode_in_while$ques$21() {
           var self = this;
 
           return self.while_stack['$empty?']()['$!']()
-        }, $ScopeNode_in_while$ques$37.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$uses_block!', $ScopeNode_uses_block$excl$38 = function() {
-          var self = this, $ret_or_12 = nil;
+        $def(self, '$uses_block!', function $ScopeNode_uses_block$excl$22() {
+          var self = this;
 
-          if ($truthy((function() {if ($truthy(($ret_or_12 = self.type['$==']("iter")))) {
-            return self.parent
-          } else {
-            return $ret_or_12
-          }; return nil; })())) {
+          if (($eqeq(self.type, "iter") && ($truthy(self.parent)))) {
             return self.parent['$uses_block!']()
           } else {
             
             self.uses_block = true;
             return self['$identify!']();
           }
-        }, $ScopeNode_uses_block$excl$38.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$identify!', $ScopeNode_identify$excl$39 = function(name) {
-          var self = this, $ret_or_13 = nil, $ret_or_14 = nil, $ret_or_15 = nil;
+        $def(self, '$identify!', function $ScopeNode_identify$excl$23(name) {
+          var self = this, $ret_or_1 = nil, $ret_or_2 = nil, $ret_or_3 = nil;
 
           
           
-          if (name == null) {
-            name = nil;
-          };
+          if (name == null) name = nil;;
           if ($truthy(self.identity)) {
-            return self.identity};
-          name = (function() {if ($truthy(($ret_or_13 = name))) {
-            return $ret_or_13
+            return self.identity
+          };
+          if ($truthy(self['$valid_name?'](self.$mid()))) {
+            self.identity = "$$" + (self.$mid())
           } else {
-            return [(function() {if ($truthy(($ret_or_14 = self.$parent()))) {
-              
-              if ($truthy(($ret_or_15 = self.$parent().$name()))) {
-                return $ret_or_15
-              } else {
-                return self.$parent().$scope_name()
-              };
-            } else {
-              return $ret_or_14
-            }; return nil; })(), self.$mid()].$compact().$join("_")
-          }; return nil; })();
-          self.identity = self.compiler.$unique_temp(name);
-          if ($truthy(self.parent)) {
-            self.parent.$add_scope_temp(self.identity)};
+            
+            name = ($truthy(($ret_or_1 = name)) ? ($ret_or_1) : ([($truthy(($ret_or_2 = self.$parent())) ? (($truthy(($ret_or_3 = self.$parent().$name())) ? ($ret_or_3) : (self.$parent().$scope_name()))) : ($ret_or_2)), self.$mid()].$compact().$join("_")));
+            self.identity = self.compiler.$unique_temp(name);
+          };
           return self.identity;
-        }, $ScopeNode_identify$excl$39.$$arity = -1);
+        }, -1);
         self.$attr_reader("identity");
         
-        Opal.def(self, '$find_parent_def', $ScopeNode_find_parent_def$40 = function $$find_parent_def() {
-          var $a, self = this, scope = nil, $ret_or_16 = nil;
+        $def(self, '$find_parent_def', function $$find_parent_def() {
+          var $a, self = this, scope = nil;
 
           
           scope = self;
           while ($truthy((scope = scope.$parent()))) {
-            if ($truthy((function() {if ($truthy(($ret_or_16 = scope['$def?']()))) {
-              return $ret_or_16
-            } else {
-              return scope['$lambda?']()
-            }; return nil; })())) {
-              return scope}
+            if (($truthy(scope['$def?']()) || ($truthy(scope['$lambda?']())))) {
+              return scope
+            }
           };
           return nil;
-        }, $ScopeNode_find_parent_def$40.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$super_chain', $ScopeNode_super_chain$41 = function $$super_chain() {
+        $def(self, '$super_chain', function $$super_chain() {
           var $a, self = this, chain = nil, scope = nil, defn = nil, mid = nil;
 
           
           $a = [[], self, "null", "null"], (chain = $a[0]), (scope = $a[1]), (defn = $a[2]), (mid = $a[3]), $a;
           while ($truthy(scope)) {
-            if (scope.$type()['$==']("iter")) {
+            if ($eqeq(scope.$type(), "iter")) {
               
               chain['$<<'](scope['$identify!']());
               if ($truthy(scope.$parent())) {
-                scope = scope.$parent()};
+                scope = scope.$parent()
+              };
             } else if ($truthy(["def", "defs"]['$include?'](scope.$type()))) {
               
               defn = scope['$identify!']();
-              mid = "" + "'" + (scope.$mid()) + "'";
+              mid = "'" + (scope.$mid()) + "'";
               break;;
             } else {
               break;
             }
           };
           return [chain, defn, mid];
-        }, $ScopeNode_super_chain$41.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$uses_block?', $ScopeNode_uses_block$ques$42 = function() {
+        $def(self, '$uses_block?', function $ScopeNode_uses_block$ques$24() {
           var self = this;
 
           return self.uses_block
-        }, $ScopeNode_uses_block$ques$42.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$has_rescue_else?', $ScopeNode_has_rescue_else$ques$43 = function() {
+        $def(self, '$has_rescue_else?', function $ScopeNode_has_rescue_else$ques$25() {
           var self = this;
 
           return self.$rescue_else_sexp()['$nil?']()['$!']()
-        }, $ScopeNode_has_rescue_else$ques$43.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$in_rescue', $ScopeNode_in_rescue$44 = function $$in_rescue(node) {
-          var $iter = $ScopeNode_in_rescue$44.$$p, $yield = $iter || nil, self = this, $ret_or_17 = nil, result = nil;
+        $def(self, '$in_rescue', function $$in_rescue(node) {
+          var $yield = $$in_rescue.$$p || nil, self = this, $ret_or_1 = nil, result = nil;
 
-          if ($iter) $ScopeNode_in_rescue$44.$$p = null;
+          delete $$in_rescue.$$p;
           
-          self.rescues = (function() {if ($truthy(($ret_or_17 = self.rescues))) {
-            return $ret_or_17
-          } else {
-            return []
-          }; return nil; })();
+          self.rescues = ($truthy(($ret_or_1 = self.rescues)) ? ($ret_or_1) : ([]));
           self.rescues.$push(node);
           result = Opal.yieldX($yield, []);
           self.rescues.$pop();
           return result;
-        }, $ScopeNode_in_rescue$44.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$current_rescue', $ScopeNode_current_rescue$45 = function $$current_rescue() {
+        $def(self, '$current_rescue', function $$current_rescue() {
           var self = this;
 
           return self.rescues.$last()
-        }, $ScopeNode_current_rescue$45.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$in_resbody', $ScopeNode_in_resbody$46 = function $$in_resbody() {
-          var $iter = $ScopeNode_in_resbody$46.$$p, $yield = $iter || nil, self = this, result = nil;
+        $def(self, '$in_resbody', function $$in_resbody() {
+          var $yield = $$in_resbody.$$p || nil, self = this, result = nil;
 
-          if ($iter) $ScopeNode_in_resbody$46.$$p = null;
+          delete $$in_resbody.$$p;
           
-          if (($yield !== nil)) {
-          } else {
+          if (!($yield !== nil)) {
             return nil
           };
           self.in_resbody = true;
           result = Opal.yieldX($yield, []);
           self.in_resbody = false;
           return result;
-        }, $ScopeNode_in_resbody$46.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$in_resbody?', $ScopeNode_in_resbody$ques$47 = function() {
+        $def(self, '$in_resbody?', function $ScopeNode_in_resbody$ques$26() {
           var self = this;
 
           return self.in_resbody
-        }, $ScopeNode_in_resbody$ques$47.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$in_ensure', $ScopeNode_in_ensure$48 = function $$in_ensure() {
-          var $iter = $ScopeNode_in_ensure$48.$$p, $yield = $iter || nil, self = this, result = nil;
+        $def(self, '$in_ensure', function $$in_ensure() {
+          var $yield = $$in_ensure.$$p || nil, self = this, result = nil;
 
-          if ($iter) $ScopeNode_in_ensure$48.$$p = null;
+          delete $$in_ensure.$$p;
           
-          if (($yield !== nil)) {
-          } else {
+          if (!($yield !== nil)) {
             return nil
           };
           self.in_ensure = true;
           result = Opal.yieldX($yield, []);
           self.in_ensure = false;
           return result;
-        }, $ScopeNode_in_ensure$48.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$in_ensure?', $ScopeNode_in_ensure$ques$49 = function() {
+        $def(self, '$in_ensure?', function $ScopeNode_in_ensure$ques$27() {
           var self = this;
 
           return self.in_ensure
-        }, $ScopeNode_in_ensure$ques$49.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$gen_retry_id', $ScopeNode_gen_retry_id$50 = function $$gen_retry_id() {
-          var self = this, $ret_or_18 = nil;
+        $def(self, '$gen_retry_id', function $$gen_retry_id() {
+          var self = this, $ret_or_1 = nil;
 
           
-          self.next_retry_id = (function() {if ($truthy(($ret_or_18 = self.next_retry_id))) {
-            return $ret_or_18
-          } else {
-            return "retry_0"
-          }; return nil; })();
+          self.next_retry_id = ($truthy(($ret_or_1 = self.next_retry_id)) ? ($ret_or_1) : ("retry_0"));
           return (self.next_retry_id = self.next_retry_id.$succ());
-        }, $ScopeNode_gen_retry_id$50.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$accepts_using?', $ScopeNode_accepts_using$ques$51 = function() {
+        $def(self, '$accepts_using?', function $ScopeNode_accepts_using$ques$28() {
           var self = this;
 
-          return [$$($nesting, 'TopNode'), $$($nesting, 'ModuleNode'), $$($nesting, 'ClassNode'), $$($nesting, 'IterNode')]['$include?'](self.$class())
-        }, $ScopeNode_accepts_using$ques$51.$$arity = 0);
+          return [$$('TopNode'), $$('ModuleNode'), $$('ClassNode'), $$('IterNode')]['$include?'](self.$class())
+        }, 0);
         
-        Opal.def(self, '$collect_refinements_temps', $ScopeNode_collect_refinements_temps$52 = function $$collect_refinements_temps(temps) {
+        $def(self, '$collect_refinements_temps', function $$collect_refinements_temps(temps) {
           var self = this;
 
           
           
-          if (temps == null) {
-            temps = [];
-          };
+          if (temps == null) temps = [];;
           if ($truthy(self.refinements_temp)) {
-            temps['$<<'](self.refinements_temp)};
+            temps['$<<'](self.refinements_temp)
+          };
           if ($truthy(self.$parent())) {
-            return self.$parent().$collect_refinements_temps(temps)};
+            return self.$parent().$collect_refinements_temps(temps)
+          };
           return temps;
-        }, $ScopeNode_collect_refinements_temps$52.$$arity = -1);
+        }, -1);
         
-        Opal.def(self, '$new_refinements_temp', $ScopeNode_new_refinements_temp$53 = function $$new_refinements_temp() {
+        $def(self, '$new_refinements_temp', function $$new_refinements_temp() {
           var self = this, var$ = nil;
 
           
           var$ = self.$compiler().$unique_temp("$refn");
           self.$add_scope_local(var$);
           return var$;
-        }, $ScopeNode_new_refinements_temp$53.$$arity = 0);
-        return (Opal.def(self, '$refinements_temp', $ScopeNode_refinements_temp$54 = function $$refinements_temp() {
+        }, 0);
+        
+        $def(self, '$refinements_temp', function $$refinements_temp() {
           var $a, self = this, prev = nil, curr = nil;
 
           
           $a = [self.refinements_temp, self.$new_refinements_temp()], (prev = $a[0]), (curr = $a[1]), $a;
           self.refinements_temp = curr;
           return [prev, curr];
-        }, $ScopeNode_refinements_temp$54.$$arity = 0), nil) && 'refinements_temp';
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+        }, 0);
+        
+        $def(self, '$self', function $$self() {
+          var self = this;
+
+          
+          self.define_self = true;
+          return "self";
+        }, 0);
+        
+        $def(self, '$nesting', function $$nesting() {
+          var self = this;
+
+          
+          self.define_nesting = true;
+          return "$nesting";
+        }, 0);
+        
+        $def(self, '$relative_access', function $$relative_access() {
+          var self = this;
+
+          
+          self.define_relative_access = (self.define_nesting = true);
+          return "$$";
+        }, 0);
+        
+        $def(self, '$prepare_block', function $$prepare_block(block_name) {
+          var self = this, scope_name = nil, $writer = nil;
+
+          
+          
+          if (block_name == null) block_name = nil;;
+          scope_name = self.$scope().$identity();
+          if ($truthy(block_name)) {
+            
+            $writer = [block_name];
+            $send(self, 'block_name=', $to_a($writer));
+            $writer[$rb_minus($writer["length"], 1)];
+          };
+          self.$add_temp("" + (self.$block_name()) + " = " + (scope_name) + ".$$p || nil");
+          if ($truthy(self.block_prepared)) {
+            return nil
+          } else {
+            
+            self.$line("delete " + (scope_name) + ".$$p;");
+            return (self.block_prepared = true);
+          };
+        }, -1);
+        return self.$attr_accessor("await_encountered");
+      })($nesting[0], $$('Base'), $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/module"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy;
+Opal.modules["opal/nodes/module"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $to_ary = Opal.to_ary, $truthy = Opal.truthy, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $rb_plus = Opal.rb_plus, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$name_and_base', '$helper', '$push', '$line', '$in_scope', '$name=', '$scope', '$-', '$compile_body', '$private', '$cid', '$nil?', '$expr', '$add_temp', '$stmt', '$returns', '$compiler', '$body', '$s', '$empty_line', '$to_vars']);
+  Opal.add_stubs('require,handle,children,name_and_base,helper,nil?,body,stmt?,unshift,line,in_scope,name=,scope,-,compile_body,await_encountered,await_encountered=,parent,+,nesting,private,cid,expr,stmt,returns,compiler,empty_line,add_temp,to_vars');
   
   self.$require("opal/nodes/scope");
   return (function($base, $parent_nesting) {
@@ -35014,75 +31747,94 @@ Opal.modules["opal/nodes/module"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'ModuleNode');
 
-        var $nesting = [self].concat($parent_nesting), $ModuleNode_compile$1, $ModuleNode_name_and_base$3, $ModuleNode_compile_body$4;
+        var $proto = self.$$prototype;
 
+        $proto.define_nesting = $proto.define_relative_access = nil;
         
         self.$handle("module");
         self.$children("cid", "body");
         
-        Opal.def(self, '$compile', $ModuleNode_compile$1 = function $$compile() {
-          var $a, $b, $$2, self = this, name = nil, base = nil;
+        $def(self, '$compile', function $$compile() {
+          var $a, $b, self = this, name = nil, base = nil, await_begin = nil, await_end = nil, async = nil, $writer = nil;
 
           
-          $b = self.$name_and_base(), $a = Opal.to_ary($b), (name = ($a[0] == null ? nil : $a[0])), (base = ($a[1] == null ? nil : $a[1])), $b;
+          $b = self.$name_and_base(), $a = $to_ary($b), (name = ($a[0] == null ? nil : $a[0])), (base = ($a[1] == null ? nil : $a[1])), $b;
           self.$helper("module");
-          self.$push("(function($base, $parent_nesting) {");
-          self.$line("" + "  var self = $module($base, '" + (name) + "');");
-          $send(self, 'in_scope', [], ($$2 = function(){var self = $$2.$$s == null ? this : $$2.$$s, $writer = nil;
-
-            
+          if ($truthy(self.$body()['$nil?']())) {
+            if ($truthy(self['$stmt?']())) {
+              return self.$unshift("$module(", base, ", '" + (name) + "')")
+            } else {
+              return self.$unshift("($module(", base, ", '" + (name) + "'), nil)")
+            }
+          } else {
             
-            $writer = [name];
-            $send(self.$scope(), 'name=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];;
-            return self.$compile_body();}, $$2.$$s = self, $$2.$$arity = 0, $$2));
-          return self.$line("})(", base, ", $nesting)");
-        }, $ModuleNode_compile$1.$$arity = 0);
+            self.$line("  var self = $module($base, '" + (name) + "');");
+            $send(self, 'in_scope', [], function $$1(){var self = $$1.$$s == null ? this : $$1.$$s, $writer = nil;
+
+              
+              
+              $writer = [name];
+              $send(self.$scope(), 'name=', $to_a($writer));
+              $writer[$rb_minus($writer["length"], 1)];;
+              return self.$compile_body();}, {$$arity: 0, $$s: self});
+            if ($truthy(self.$await_encountered())) {
+              
+              await_begin = "(await ";
+              await_end = ")";
+              async = "async ";
+              
+              $writer = [true];
+              $send(self.$parent(), 'await_encountered=', $to_a($writer));
+              $writer[$rb_minus($writer["length"], 1)];;
+            } else {
+              $a = ["", "", ""], (await_begin = $a[0]), (await_end = $a[1]), (async = $a[2]), $a
+            };
+            self.$unshift("" + (await_begin) + "(" + (async) + "function($base" + (($truthy(self.define_nesting) ? (", $parent_nesting") : nil)) + ") {");
+            return self.$line("})(", base, "" + (($truthy(self.define_nesting) ? ($rb_plus(", ", self.$scope().$nesting())) : nil)) + ")" + (await_end));
+          };
+        }, 0);
         self.$private();
         
-        Opal.def(self, '$name_and_base', $ModuleNode_name_and_base$3 = function $$name_and_base() {
+        $def(self, '$name_and_base', function $$name_and_base() {
           var $a, $b, self = this, base = nil, name = nil;
 
           
-          $b = self.$cid().$children(), $a = Opal.to_ary($b), (base = ($a[0] == null ? nil : $a[0])), (name = ($a[1] == null ? nil : $a[1])), $b;
+          $b = self.$cid().$children(), $a = $to_ary($b), (base = ($a[0] == null ? nil : $a[0])), (name = ($a[1] == null ? nil : $a[1])), $b;
           if ($truthy(base['$nil?']())) {
-            return [name, "$nesting[0]"]
+            return [name, "" + (self.$scope().$nesting()) + "[0]"]
           } else {
             return [name, self.$expr(base)]
           };
-        }, $ModuleNode_name_and_base$3.$$arity = 0);
-        return (Opal.def(self, '$compile_body', $ModuleNode_compile_body$4 = function $$compile_body() {
-          var self = this, body_code = nil, $ret_or_1 = nil;
+        }, 0);
+        return $def(self, '$compile_body', function $$compile_body() {
+          var self = this, body_code = nil;
 
           
-          self.$add_temp("$nesting = [self].concat($parent_nesting)");
-          body_code = self.$stmt(self.$compiler().$returns((function() {if ($truthy(($ret_or_1 = self.$body()))) {
-            return $ret_or_1
-          } else {
-            return self.$s("nil")
-          }; return nil; })()));
+          body_code = self.$stmt(self.$compiler().$returns(self.$body()));
           self.$empty_line();
+          if ($truthy(self.define_nesting)) {
+            self.$add_temp("$nesting = [self].concat($parent_nesting)")
+          };
+          if ($truthy(self.define_relative_access)) {
+            self.$add_temp("$$ = Opal.$r($nesting)")
+          };
           self.$line(self.$scope().$to_vars());
           return self.$line(body_code);
-        }, $ModuleNode_compile_body$4.$$arity = 0), nil) && 'compile_body';
-      })($nesting[0], $$($nesting, 'ScopeNode'), $nesting)
+        }, 0);
+      })($nesting[0], $$('ScopeNode'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/class"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy;
+Opal.modules["opal/nodes/class"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $to_ary = Opal.to_ary, $truthy = Opal.truthy, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $rb_plus = Opal.rb_plus, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$name_and_base', '$helper', '$push', '$line', '$in_scope', '$name=', '$scope', '$-', '$compile_body', '$super_code', '$sup', '$expr']);
+  Opal.add_stubs('require,handle,children,name_and_base,helper,nil?,body,stmt?,unshift,super_code,line,in_scope,name=,scope,-,compile_body,await_encountered,await_encountered=,parent,+,nesting,sup,expr');
   
   self.$require("opal/nodes/module");
   return (function($base, $parent_nesting) {
@@ -35093,36 +31845,58 @@ Opal.modules["opal/nodes/class"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'ClassNode');
 
-        var $nesting = [self].concat($parent_nesting), $ClassNode_compile$1, $ClassNode_super_code$3;
+        var $proto = self.$$prototype;
 
+        $proto.define_nesting = nil;
         
         self.$handle("class");
         self.$children("cid", "sup", "body");
         
-        Opal.def(self, '$compile', $ClassNode_compile$1 = function $$compile() {
-          var $a, $b, $$2, self = this, name = nil, base = nil;
+        $def(self, '$compile', function $$compile() {
+          var $a, $b, self = this, name = nil, base = nil, await_begin = nil, await_end = nil, async = nil, $writer = nil;
 
           
-          $b = self.$name_and_base(), $a = Opal.to_ary($b), (name = ($a[0] == null ? nil : $a[0])), (base = ($a[1] == null ? nil : $a[1])), $b;
+          $b = self.$name_and_base(), $a = $to_ary($b), (name = ($a[0] == null ? nil : $a[0])), (base = ($a[1] == null ? nil : $a[1])), $b;
           self.$helper("klass");
-          self.$push("(function($base, $super, $parent_nesting) {");
-          self.$line("" + "  var self = $klass($base, $super, '" + (name) + "');");
-          $send(self, 'in_scope', [], ($$2 = function(){var self = $$2.$$s == null ? this : $$2.$$s, $writer = nil;
-
-            
+          if ($truthy(self.$body()['$nil?']())) {
+            if ($truthy(self['$stmt?']())) {
+              return self.$unshift("$klass(", base, ", ", self.$super_code(), ", '" + (name) + "')")
+            } else {
+              return self.$unshift("($klass(", base, ", ", self.$super_code(), ", '" + (name) + "'), nil)")
+            }
+          } else {
             
-            $writer = [name];
-            $send(self.$scope(), 'name=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];;
-            return self.$compile_body();}, $$2.$$s = self, $$2.$$arity = 0, $$2));
-          return self.$line("})(", base, ", ", self.$super_code(), ", $nesting)");
-        }, $ClassNode_compile$1.$$arity = 0);
-        return (Opal.def(self, '$super_code', $ClassNode_super_code$3 = function $$super_code() {
+            self.$line("  var self = $klass($base, $super, '" + (name) + "');");
+            $send(self, 'in_scope', [], function $$1(){var self = $$1.$$s == null ? this : $$1.$$s, $writer = nil;
+
+              
+              
+              $writer = [name];
+              $send(self.$scope(), 'name=', $to_a($writer));
+              $writer[$rb_minus($writer["length"], 1)];;
+              return self.$compile_body();}, {$$arity: 0, $$s: self});
+            if ($truthy(self.$await_encountered())) {
+              
+              await_begin = "(await ";
+              await_end = ")";
+              async = "async ";
+              
+              $writer = [true];
+              $send(self.$parent(), 'await_encountered=', $to_a($writer));
+              $writer[$rb_minus($writer["length"], 1)];;
+            } else {
+              $a = ["", "", ""], (await_begin = $a[0]), (await_end = $a[1]), (async = $a[2]), $a
+            };
+            self.$unshift("" + (await_begin) + "(" + (async) + "function($base, $super" + (($truthy(self.define_nesting) ? (", $parent_nesting") : nil)) + ") {");
+            return self.$line("})(", base, ", ", self.$super_code(), "" + (($truthy(self.define_nesting) ? ($rb_plus(", ", self.$scope().$nesting())) : nil)) + ")" + (await_end));
+          };
+        }, 0);
+        return $def(self, '$super_code', function $$super_code() {
           var self = this;
 
           if ($truthy(self.$sup())) {
@@ -35130,17 +31904,16 @@ Opal.modules["opal/nodes/class"] = function(Opal) {
           } else {
             return "null"
           }
-        }, $ClassNode_super_code$3.$$arity = 0), nil) && 'super_code';
-      })($nesting[0], $$($nesting, 'ModuleNode'), $nesting)
+        }, 0);
+      })($nesting[0], $$('ModuleNode'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/singleton_class"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send;
+Opal.modules["opal/nodes/singleton_class"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$push', '$in_scope', '$add_temp', '$stmt', '$returns', '$compiler', '$body', '$line', '$to_vars', '$scope', '$recv', '$object']);
+  Opal.add_stubs('require,handle,children,push,in_scope,stmt,returns,compiler,body,add_temp,line,to_vars,scope,recv,object,nesting');
   
   self.$require("opal/nodes/scope");
   return (function($base, $parent_nesting) {
@@ -35151,40 +31924,45 @@ Opal.modules["opal/nodes/singleton_class"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'SingletonClassNode');
 
-        var $nesting = [self].concat($parent_nesting), $SingletonClassNode_compile$1;
-
+        
         
         self.$handle("sclass");
         self.$children("object", "body");
-        return (Opal.def(self, '$compile', $SingletonClassNode_compile$1 = function $$compile() {
-          var $$2, self = this;
+        return $def(self, '$compile', function $$compile() {
+          var self = this;
 
           
           self.$push("(function(self, $parent_nesting) {");
-          $send(self, 'in_scope', [], ($$2 = function(){var self = $$2.$$s == null ? this : $$2.$$s, body_stmt = nil;
+          $send(self, 'in_scope', [], function $$1(){var self = $$1.$$s == null ? this : $$1.$$s, body_stmt = nil;
+            if (self.define_nesting == null) self.define_nesting = nil;
+            if (self.define_relative_access == null) self.define_relative_access = nil;
 
             
-            self.$add_temp("$nesting = [self].concat($parent_nesting)");
             body_stmt = self.$stmt(self.$compiler().$returns(self.$body()));
+            if ($truthy(self.define_nesting)) {
+              self.$add_temp("$nesting = [self].concat($parent_nesting)")
+            };
+            if ($truthy(self.define_relative_access)) {
+              self.$add_temp("$$ = Opal.$r($nesting)")
+            };
             self.$line(self.$scope().$to_vars());
-            return self.$line(body_stmt);}, $$2.$$s = self, $$2.$$arity = 0, $$2));
-          return self.$line("})(Opal.get_singleton_class(", self.$recv(self.$object()), "), $nesting)");
-        }, $SingletonClassNode_compile$1.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'ScopeNode'), $nesting)
+            return self.$line(body_stmt);}, {$$arity: 0, $$s: self});
+          return self.$line("})(Opal.get_singleton_class(", self.$recv(self.$object()), "), " + (self.$scope().$nesting()) + ")");
+        }, 0);
+      })($nesting[0], $$('ScopeNode'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/args/arg"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass;
+Opal.modules["opal/nodes/args/arg"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$add_arg', '$scope', '$name', '$push', '$to_s']);
+  Opal.add_stubs('require,handle,children,add_arg,scope,name,push,to_s');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -35200,46 +31978,32 @@ Opal.modules["opal/nodes/args/arg"] = function(Opal) {
       return (function($base, $parent_nesting) {
         var self = $module($base, 'Args');
 
-        var $nesting = [self].concat($parent_nesting);
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-        return (function($base, $super, $parent_nesting) {
+        return (function($base, $super) {
           var self = $klass($base, $super, 'ArgNode');
 
-          var $nesting = [self].concat($parent_nesting), $ArgNode_compile$1;
-
+          
           
           self.$handle("arg");
           self.$children("name");
-          return (Opal.def(self, '$compile', $ArgNode_compile$1 = function $$compile() {
+          return $def(self, '$compile', function $$compile() {
             var self = this;
 
             
             self.$scope().$add_arg(self.$name());
             return self.$push(self.$name().$to_s());
-          }, $ArgNode_compile$1.$$arity = 0), nil) && 'compile';
-        })($nesting[0], $$($nesting, 'Base'), $nesting)
+          }, 0);
+        })($nesting[0], $$('Base'))
       })($nesting[0], $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/args/arity_check"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $send = Opal.send, $truthy = Opal.truthy;
-
-  Opal.add_stubs(['$require', '$handle', '$children', '$new', '$args_node', '$args', '$optargs', '$restarg', '$postargs', '$kwargs', '$kwoptargs', '$kwrestarg', '$kwnilarg', '$arity', '$arity=', '$scope', '$-', '$arity_check?', '$compiler', '$empty?', '$arity_checks', '$helper', '$inspect', '$to_s', '$mid', '$line', '$push', '$join', '$compact', '$size', '$all_args', '$!', '$-@', '$<', '$+', '$>', '$<<', '$any?', '$has_only_optional_kwargs?', '$negative_arity', '$positive_arity', '$select', '$include?', '$type', '$has_required_kwargs?', '$all?', '$==', '$def?', '$class_scope?', '$top?', '$parent', '$class?', '$name', '$module?', '$identity']);
+Opal.modules["opal/nodes/args/arity_check"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $to_a = Opal.to_a, $def = Opal.def, $send = Opal.send, $rb_minus = Opal.rb_minus, $truthy = Opal.truthy, $not = Opal.not, $rb_lt = Opal.rb_lt, $rb_plus = Opal.rb_plus, $rb_gt = Opal.rb_gt;
+
+  Opal.add_stubs('require,handle,children,new,args_node,args,optargs,restarg,postargs,kwargs,kwoptargs,kwrestarg,kwnilarg,arity,arity=,scope,-,arity_check?,compiler,empty?,arity_checks,helper,inspect,to_s,mid,line,push,join,compact,size,all_args,!,-@,<,+,>,<<,has_only_optional_kwargs?,any?,negative_arity,positive_arity,select,include?,type,has_required_kwargs?,all?,==,def?,class_scope?,top?,parent,class?,name,module?,identity');
   
   self.$require("opal/nodes/base");
   self.$require("opal/rewriters/arguments");
@@ -35251,33 +32015,30 @@ Opal.modules["opal/nodes/args/arity_check"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
       (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'ArityCheckNode');
 
-        var $nesting = [self].concat($parent_nesting), $ArityCheckNode_initialize$1, $ArityCheckNode_compile$2, $ArityCheckNode_kwargs$3, $ArityCheckNode_all_args$4, $ArityCheckNode_arity_checks$5, $ArityCheckNode_arity$6, $ArityCheckNode_negative_arity$7, $ArityCheckNode_positive_arity$9, $ArityCheckNode_has_only_optional_kwargs$ques$10, $ArityCheckNode_has_required_kwargs$ques$12;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.kwargs = self.$$prototype.kwoptargs = self.$$prototype.kwrestarg = self.$$prototype.all_args = self.$$prototype.args = self.$$prototype.optargs = self.$$prototype.restarg = self.$$prototype.postargs = self.$$prototype.arity_checks = nil;
+        $proto.kwargs = $proto.kwoptargs = $proto.kwrestarg = $proto.all_args = $proto.args = $proto.optargs = $proto.restarg = $proto.postargs = $proto.arity_checks = nil;
         
         self.$handle("arity_check");
         self.$children("args_node");
         
-        Opal.def(self, '$initialize', $ArityCheckNode_initialize$1 = function $$initialize($a) {
-          var $post_args, $iter = $ArityCheckNode_initialize$1.$$p, $yield = $iter || nil, self = this, arguments$ = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        $def(self, '$initialize', function $$initialize($a) {
+          var $post_args, $rest_arg, $yield = $$initialize.$$p || nil, self = this, arguments$ = nil;
 
-          if ($iter) $ArityCheckNode_initialize$1.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$initialize.$$p;
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
-          ;
-          $send2(self, $find_super(self, 'initialize', $ArityCheckNode_initialize$1, false, true), 'initialize', $zuper, $iter);
-          arguments$ = $$$($$($nesting, 'Rewriters'), 'Arguments').$new(self.$args_node().$children());
+          $post_args = Opal.slice.call(arguments);
+          
+          $rest_arg = $post_args;;
+          $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', $to_a($rest_arg), $yield);
+          arguments$ = $$$($$('Rewriters'), 'Arguments').$new(self.$args_node().$children());
           self.args = arguments$.$args();
           self.optargs = arguments$.$optargs();
           self.restarg = arguments$.$restarg();
@@ -35286,18 +32047,17 @@ Opal.modules["opal/nodes/args/arity_check"] = function(Opal) {
           self.kwoptargs = arguments$.$kwoptargs();
           self.kwrestarg = arguments$.$kwrestarg();
           return (self.kwnilarg = arguments$.$kwnilarg());
-        }, $ArityCheckNode_initialize$1.$$arity = -1);
+        }, -1);
         
-        Opal.def(self, '$compile', $ArityCheckNode_compile$2 = function $$compile() {
+        $def(self, '$compile', function $$compile() {
           var self = this, $writer = nil, meth = nil;
 
           
           
           $writer = [self.$arity()];
-          $send(self.$scope(), 'arity=', Opal.to_a($writer));
+          $send(self.$scope(), 'arity=', $to_a($writer));
           $writer[$rb_minus($writer["length"], 1)];;
-          if ($truthy(self.$compiler()['$arity_check?']())) {
-          } else {
+          if (!$truthy(self.$compiler()['$arity_check?']())) {
             return nil
           };
           if ($truthy(self.$arity_checks()['$empty?']())) {
@@ -35307,158 +32067,132 @@ Opal.modules["opal/nodes/args/arity_check"] = function(Opal) {
             self.$helper("ac");
             meth = self.$scope().$mid().$to_s().$inspect();
             self.$line("var $arity = arguments.length;");
-            return self.$push("" + " if (" + (self.$arity_checks().$join(" || ")) + ") { $ac($arity, " + (self.$arity()) + ", this, " + (meth) + "); }");
+            return self.$push(" if (" + (self.$arity_checks().$join(" || ")) + ") { $ac($arity, " + (self.$arity()) + ", this, " + (meth) + "); }");
           };
-        }, $ArityCheckNode_compile$2.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$kwargs', $ArityCheckNode_kwargs$3 = function $$kwargs() {
+        $def(self, '$kwargs', function $$kwargs() {
           var self = this;
 
-          return [].concat(Opal.to_a(self.kwargs)).concat(Opal.to_a(self.kwoptargs)).concat([self.kwrestarg]).$compact()
-        }, $ArityCheckNode_kwargs$3.$$arity = 0);
+          return [].concat($to_a(self.kwargs)).concat($to_a(self.kwoptargs)).concat([self.kwrestarg]).$compact()
+        }, 0);
         
-        Opal.def(self, '$all_args', $ArityCheckNode_all_args$4 = function $$all_args() {
+        $def(self, '$all_args', function $$all_args() {
           var self = this, $ret_or_1 = nil;
 
-          return (self.all_args = (function() {if ($truthy(($ret_or_1 = self.all_args))) {
-            return $ret_or_1
-          } else {
-            return [].concat(Opal.to_a(self.args)).concat(Opal.to_a(self.optargs)).concat([self.restarg]).concat(Opal.to_a(self.postargs)).concat(Opal.to_a(self.$kwargs())).$compact()
-          }; return nil; })())
-        }, $ArityCheckNode_all_args$4.$$arity = 0);
+          return (self.all_args = ($truthy(($ret_or_1 = self.all_args)) ? ($ret_or_1) : ([].concat($to_a(self.args)).concat($to_a(self.optargs)).concat([self.restarg]).concat($to_a(self.postargs)).concat($to_a(self.$kwargs())).$compact())))
+        }, 0);
         
-        Opal.def(self, '$arity_checks', $ArityCheckNode_arity_checks$5 = function $$arity_checks() {
-          var $a, self = this, arity = nil, $ret_or_2 = nil, $ret_or_3 = nil, min_arity = nil, max_arity = nil;
+        $def(self, '$arity_checks', function $$arity_checks() {
+          var $a, self = this, arity = nil, min_arity = nil, max_arity = nil;
 
           
           if ($truthy((($a = self['arity_checks'], $a != null && $a !== nil) ? 'instance-variable' : nil))) {
-            return self.arity_checks};
+            return self.arity_checks
+          };
           arity = self.$all_args().$size();
           arity = $rb_minus(arity, self.optargs.$size());
           if ($truthy(self.restarg)) {
-            arity = $rb_minus(arity, 1)};
+            arity = $rb_minus(arity, 1)
+          };
           arity = $rb_minus(arity, self.$kwargs().$size());
-          if ($truthy((function() {if ($truthy(($ret_or_2 = (function() {if ($truthy(($ret_or_3 = self.optargs['$empty?']()['$!']()))) {
-            return $ret_or_3
-          } else {
-            return self.$kwargs()['$empty?']()['$!']()
-          }; return nil; })()))) {
-            return $ret_or_2
-          } else {
-            return self.restarg
-          }; return nil; })())) {
-            arity = $rb_minus(arity['$-@'](), 1)};
+          if ((($not(self.optargs['$empty?']()) || ($not(self.$kwargs()['$empty?']()))) || ($truthy(self.restarg)))) {
+            arity = $rb_minus(arity['$-@'](), 1)
+          };
           self.arity_checks = [];
           if ($truthy($rb_lt(arity, 0))) {
             
             min_arity = $rb_plus(arity, 1)['$-@']();
             max_arity = self.$all_args().$size();
             if ($truthy($rb_gt(min_arity, 0))) {
-              self.arity_checks['$<<']("" + "$arity < " + (min_arity))};
-            if ($truthy(self.restarg)) {
-            } else {
-              self.arity_checks['$<<']("" + "$arity > " + (max_arity))
+              self.arity_checks['$<<']("$arity < " + (min_arity))
+            };
+            if (!$truthy(self.restarg)) {
+              self.arity_checks['$<<']("$arity > " + (max_arity))
             };
           } else {
-            self.arity_checks['$<<']("" + "$arity !== " + (arity))
+            self.arity_checks['$<<']("$arity !== " + (arity))
           };
           return self.arity_checks;
-        }, $ArityCheckNode_arity_checks$5.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$arity', $ArityCheckNode_arity$6 = function $$arity() {
-          var self = this, $ret_or_4 = nil, $ret_or_5 = nil;
+        $def(self, '$arity', function $$arity() {
+          var self = this;
 
-          if ($truthy((function() {if ($truthy(($ret_or_4 = (function() {if ($truthy(($ret_or_5 = self.restarg))) {
-            return $ret_or_5
-          } else {
-            return self.optargs['$any?']()
-          }; return nil; })()))) {
-            return $ret_or_4
-          } else {
-            return self['$has_only_optional_kwargs?']()
-          }; return nil; })())) {
+          if ((($truthy(self.restarg) || ($truthy(self.optargs['$any?']()))) || ($truthy(self['$has_only_optional_kwargs?']())))) {
             return self.$negative_arity()
           } else {
             return self.$positive_arity()
           }
-        }, $ArityCheckNode_arity$6.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$negative_arity', $ArityCheckNode_negative_arity$7 = function $$negative_arity() {
-          var $$8, self = this, required_plain_args = nil, result = nil;
+        $def(self, '$negative_arity', function $$negative_arity() {
+          var self = this, required_plain_args = nil, result = nil;
 
           
-          required_plain_args = $send(self.$all_args(), 'select', [], ($$8 = function(arg){var self = $$8.$$s == null ? this : $$8.$$s;
-
+          required_plain_args = $send(self.$all_args(), 'select', [], function $$1(arg){
             
             
-            if (arg == null) {
-              arg = nil;
-            };
-            return ["arg", "mlhs"]['$include?'](arg.$type());}, $$8.$$s = self, $$8.$$arity = 1, $$8));
+            if (arg == null) arg = nil;;
+            return ["arg", "mlhs"]['$include?'](arg.$type());}, 1);
           result = required_plain_args.$size();
           if ($truthy(self['$has_required_kwargs?']())) {
-            result = $rb_plus(result, 1)};
+            result = $rb_plus(result, 1)
+          };
           result = $rb_minus(result['$-@'](), 1);
           return result;
-        }, $ArityCheckNode_negative_arity$7.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$positive_arity', $ArityCheckNode_positive_arity$9 = function $$positive_arity() {
+        $def(self, '$positive_arity', function $$positive_arity() {
           var self = this, result = nil;
 
           
           result = self.$all_args().$size();
           result = $rb_minus(result, self.$kwargs().$size());
           if ($truthy(self.$kwargs()['$any?']())) {
-            result = $rb_plus(result, 1)};
+            result = $rb_plus(result, 1)
+          };
           return result;
-        }, $ArityCheckNode_positive_arity$9.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$has_only_optional_kwargs?', $ArityCheckNode_has_only_optional_kwargs$ques$10 = function() {
-          var $$11, self = this, $ret_or_6 = nil;
-
-          if ($truthy(($ret_or_6 = self.$kwargs()['$any?']()))) {
-            return $send(self.$kwargs(), 'all?', [], ($$11 = function(arg){var self = $$11.$$s == null ? this : $$11.$$s;
+        $def(self, '$has_only_optional_kwargs?', function $ArityCheckNode_has_only_optional_kwargs$ques$2() {
+          var self = this, $ret_or_1 = nil;
 
+          if ($truthy(($ret_or_1 = self.$kwargs()['$any?']()))) {
+            return $send(self.$kwargs(), 'all?', [], function $$3(arg){
               
               
-              if (arg == null) {
-                arg = nil;
-              };
-              return ["kwoptarg", "kwrestarg"]['$include?'](arg.$type());}, $$11.$$s = self, $$11.$$arity = 1, $$11))
+              if (arg == null) arg = nil;;
+              return ["kwoptarg", "kwrestarg"]['$include?'](arg.$type());}, 1)
           } else {
-            return $ret_or_6
+            return $ret_or_1
           }
-        }, $ArityCheckNode_has_only_optional_kwargs$ques$10.$$arity = 0);
-        return (Opal.def(self, '$has_required_kwargs?', $ArityCheckNode_has_required_kwargs$ques$12 = function() {
-          var $$13, self = this;
-
-          return $send(self.$kwargs(), 'any?', [], ($$13 = function(arg){var self = $$13.$$s == null ? this : $$13.$$s;
+        }, 0);
+        return $def(self, '$has_required_kwargs?', function $ArityCheckNode_has_required_kwargs$ques$4() {
+          var self = this;
 
+          return $send(self.$kwargs(), 'any?', [], function $$5(arg){
             
             
-            if (arg == null) {
-              arg = nil;
-            };
-            return arg.$type()['$==']("kwarg");}, $$13.$$s = self, $$13.$$arity = 1, $$13))
-        }, $ArityCheckNode_has_required_kwargs$ques$12.$$arity = 0), nil) && 'has_required_kwargs?';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      return (function($base, $super, $parent_nesting) {
+            if (arg == null) arg = nil;;
+            return arg.$type()['$==']("kwarg");}, 1)
+        }, 0);
+      })($nesting[0], $$('Base'), $nesting);
+      return (function($base, $super) {
         var self = $klass($base, $super, 'IterArityCheckNode');
 
-        var $nesting = [self].concat($parent_nesting), $IterArityCheckNode_compile$14;
-
+        
         
         self.$handle("iter_arity_check");
-        return (Opal.def(self, '$compile', $IterArityCheckNode_compile$14 = function $$compile() {
-          var $a, self = this, $writer = nil, parent_scope = nil, $ret_or_7 = nil, $ret_or_8 = nil, context = nil, identity = nil;
+        return $def(self, '$compile', function $$compile() {
+          var $a, self = this, $writer = nil, parent_scope = nil, $ret_or_1 = nil, $ret_or_2 = nil, context = nil, identity = nil;
 
           
           
           $writer = [self.$arity()];
-          $send(self.$scope(), 'arity=', Opal.to_a($writer));
+          $send(self.$scope(), 'arity=', $to_a($writer));
           $writer[$rb_minus($writer["length"], 1)];;
-          if ($truthy(self.$compiler()['$arity_check?']())) {
-          } else {
+          if (!$truthy(self.$compiler()['$arity_check?']())) {
             return nil
           };
           if ($truthy(self.$arity_checks()['$empty?']())) {
@@ -35466,45 +32200,26 @@ Opal.modules["opal/nodes/args/arity_check"] = function(Opal) {
           } else {
             
             parent_scope = self.$scope();
-            while (!($truthy((function() {if ($truthy(($ret_or_7 = (function() {if ($truthy(($ret_or_8 = parent_scope['$def?']()))) {
-              return $ret_or_8
-            } else {
-              return parent_scope['$class_scope?']()
-            }; return nil; })()))) {
-              return $ret_or_7
-            } else {
-              return parent_scope['$top?']()
-            }; return nil; })()))) {
+            while (!($truthy(($truthy(($ret_or_1 = ($truthy(($ret_or_2 = parent_scope['$def?']())) ? ($ret_or_2) : (parent_scope['$class_scope?']())))) ? ($ret_or_1) : (parent_scope['$top?']()))))) {
               parent_scope = parent_scope.$parent()
             };
-            context = (function() {if ($truthy(parent_scope['$top?']())) {
-              return "'<main>'"
-            } else if ($truthy(parent_scope['$def?']())) {
-              return "" + "'" + (parent_scope.$mid()) + "'"
-            } else if ($truthy(parent_scope['$class?']())) {
-              return "" + "'<class:" + (parent_scope.$name()) + ">'"
-            } else if ($truthy(parent_scope['$module?']())) {
-              return "" + "'<module:" + (parent_scope.$name()) + ">'"
-            } else {
-              return nil
-            }; return nil; })();
+            context = ($truthy(parent_scope['$top?']()) ? ("'<main>'") : ($truthy(parent_scope['$def?']()) ? ("'" + (parent_scope.$mid()) + "'") : ($truthy(parent_scope['$class?']()) ? ("'<class:" + (parent_scope.$name()) + ">'") : ($truthy(parent_scope['$module?']()) ? ("'<module:" + (parent_scope.$name()) + ">'") : nil))));
             identity = self.$scope().$identity();
-            self.$line("" + "if (" + (identity) + ".$$is_lambda || " + (identity) + ".$$define_meth) {");
+            self.$line("if (" + (identity) + ".$$is_lambda || " + (identity) + ".$$define_meth) {");
             self.$line("  var $arity = arguments.length;");
-            self.$line("" + "  if (" + (self.$arity_checks().$join(" || ")) + ") { Opal.block_ac($arity, " + (self.$arity()) + ", " + (context) + "); }");
+            self.$line("  if (" + (self.$arity_checks().$join(" || ")) + ") { Opal.block_ac($arity, " + (self.$arity()) + ", " + (context) + "); }");
             return self.$line("}");
           };
-        }, $IterArityCheckNode_compile$14.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'ArityCheckNode'), $nesting);
+        }, 0);
+      })($nesting[0], $$('ArityCheckNode'));
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/args/ensure_kwargs_are_kwargs"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass;
+Opal.modules["opal/nodes/args/ensure_kwargs_are_kwargs"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$helper', '$line']);
+  Opal.add_stubs('require,handle,helper,line');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -35520,16 +32235,15 @@ Opal.modules["opal/nodes/args/ensure_kwargs_are_kwargs"] = function(Opal) {
       return (function($base, $parent_nesting) {
         var self = $module($base, 'Args');
 
-        var $nesting = [self].concat($parent_nesting);
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-        return (function($base, $super, $parent_nesting) {
+        return (function($base, $super) {
           var self = $klass($base, $super, 'EnsureKwargsAreKwargs');
 
-          var $nesting = [self].concat($parent_nesting), $EnsureKwargsAreKwargs_compile$1;
-
+          
           
           self.$handle("ensure_kwargs_are_kwargs");
-          return (Opal.def(self, '$compile', $EnsureKwargsAreKwargs_compile$1 = function $$compile() {
+          return $def(self, '$compile', function $$compile() {
             var self = this;
 
             
@@ -35539,21 +32253,17 @@ Opal.modules["opal/nodes/args/ensure_kwargs_are_kwargs"] = function(Opal) {
             self.$line("} else if (!$kwargs.$$is_hash) {");
             self.$line("  throw Opal.ArgumentError.$new('expected kwargs');");
             return self.$line("}");
-          }, $EnsureKwargsAreKwargs_compile$1.$$arity = 0), nil) && 'compile';
-        })($nesting[0], $$($nesting, 'Base'), $nesting)
+          }, 0);
+        })($nesting[0], $$('Base'))
       })($nesting[0], $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/args/extract_block_arg"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send;
+Opal.modules["opal/nodes/args/extract_block_arg"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$uses_block!', '$scope', '$add_arg', '$name', '$block_name=', '$-', '$identity', '$block_name', '$add_temp', '$line']);
+  Opal.add_stubs('require,handle,children,uses_block!,scope,add_arg,name,prepare_block');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -35569,43 +32279,33 @@ Opal.modules["opal/nodes/args/extract_block_arg"] = function(Opal) {
       return (function($base, $parent_nesting) {
         var self = $module($base, 'Args');
 
-        var $nesting = [self].concat($parent_nesting);
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-        return (function($base, $super, $parent_nesting) {
+        return (function($base, $super) {
           var self = $klass($base, $super, 'ExtractBlockarg');
 
-          var $nesting = [self].concat($parent_nesting), $ExtractBlockarg_compile$1;
-
+          
           
           self.$handle("extract_blockarg");
           self.$children("name");
-          return (Opal.def(self, '$compile', $ExtractBlockarg_compile$1 = function $$compile() {
-            var self = this, $writer = nil, scope_name = nil, yielder = nil;
+          return $def(self, '$compile', function $$compile() {
+            var self = this;
 
             
             self.$scope()['$uses_block!']();
             self.$scope().$add_arg(self.$name());
-            
-            $writer = [self.$name()];
-            $send(self.$scope(), 'block_name=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];;
-            scope_name = self.$scope().$identity();
-            yielder = self.$scope().$block_name();
-            self.$add_temp("" + "$iter = " + (scope_name) + ".$$p");
-            self.$add_temp("" + (yielder) + " = $iter || nil");
-            return self.$line("" + "if ($iter) " + (scope_name) + ".$$p = null;");
-          }, $ExtractBlockarg_compile$1.$$arity = 0), nil) && 'compile';
-        })($nesting[0], $$($nesting, 'Base'), $nesting)
+            return self.$scope().$prepare_block(self.$name());
+          }, 0);
+        })($nesting[0], $$('Base'))
       })($nesting[0], $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/args/extract_kwarg"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass;
+Opal.modules["opal/nodes/args/extract_kwarg"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$[]', '$meta', '$<<', '$used_kwargs', '$scope', '$add_temp', '$lvar_name', '$line', '$inspect', '$to_s']);
+  Opal.add_stubs('require,handle,children,[],meta,<<,used_kwargs,scope,add_temp,lvar_name,line,inspect,to_s');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -35621,40 +32321,39 @@ Opal.modules["opal/nodes/args/extract_kwarg"] = function(Opal) {
       return (function($base, $parent_nesting) {
         var self = $module($base, 'Args');
 
-        var $nesting = [self].concat($parent_nesting);
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-        return (function($base, $super, $parent_nesting) {
+        return (function($base, $super) {
           var self = $klass($base, $super, 'ExtractKwarg');
 
-          var $nesting = [self].concat($parent_nesting), $ExtractKwarg_compile$1;
+          var $proto = self.$$prototype;
 
-          self.$$prototype.sexp = nil;
+          $proto.sexp = nil;
           
           self.$handle("extract_kwarg");
           self.$children("lvar_name");
-          return (Opal.def(self, '$compile', $ExtractKwarg_compile$1 = function $$compile() {
+          return $def(self, '$compile', function $$compile() {
             var self = this, key_name = nil;
 
             
             key_name = self.sexp.$meta()['$[]']("arg_name");
             self.$scope().$used_kwargs()['$<<'](key_name);
             self.$add_temp(self.$lvar_name());
-            self.$line("" + "if (!Opal.hasOwnProperty.call($kwargs.$$smap, '" + (key_name) + "')) {");
-            self.$line("" + "  throw Opal.ArgumentError.$new('missing keyword: " + (key_name) + "');");
+            self.$line("if (!Opal.hasOwnProperty.call($kwargs.$$smap, '" + (key_name) + "')) {");
+            self.$line("  throw Opal.ArgumentError.$new('missing keyword: " + (key_name) + "');");
             self.$line("}");
             return self.$line("" + (self.$lvar_name()) + " = $kwargs.$$smap[" + (key_name.$to_s().$inspect()) + "];");
-          }, $ExtractKwarg_compile$1.$$arity = 0), nil) && 'compile';
-        })($nesting[0], $$($nesting, 'Base'), $nesting)
+          }, 0);
+        })($nesting[0], $$('Base'))
       })($nesting[0], $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/args/extract_kwargs"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass;
+Opal.modules["opal/nodes/args/extract_kwargs"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$add_temp', '$line']);
+  Opal.add_stubs('require,handle,add_temp,line');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -35670,33 +32369,31 @@ Opal.modules["opal/nodes/args/extract_kwargs"] = function(Opal) {
       return (function($base, $parent_nesting) {
         var self = $module($base, 'Args');
 
-        var $nesting = [self].concat($parent_nesting);
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-        return (function($base, $super, $parent_nesting) {
+        return (function($base, $super) {
           var self = $klass($base, $super, 'ExtractKwargs');
 
-          var $nesting = [self].concat($parent_nesting), $ExtractKwargs_compile$1;
-
+          
           
           self.$handle("extract_kwargs");
-          return (Opal.def(self, '$compile', $ExtractKwargs_compile$1 = function $$compile() {
+          return $def(self, '$compile', function $$compile() {
             var self = this;
 
             
             self.$add_temp("$kwargs");
             return self.$line("$kwargs = Opal.extract_kwargs($post_args)");
-          }, $ExtractKwargs_compile$1.$$arity = 0), nil) && 'compile';
-        })($nesting[0], $$($nesting, 'Base'), $nesting)
+          }, 0);
+        })($nesting[0], $$('Base'))
       })($nesting[0], $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/args/extract_kwoptarg"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass;
+Opal.modules["opal/nodes/args/extract_kwoptarg"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $eqeq = Opal.eqeq, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$[]', '$meta', '$<<', '$used_kwargs', '$scope', '$add_temp', '$lvar_name', '$line', '$inspect', '$to_s', '$==', '$default_value', '$expr']);
+  Opal.add_stubs('require,handle,children,[],meta,<<,used_kwargs,scope,add_temp,lvar_name,line,inspect,to_s,==,default_value,expr');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -35712,18 +32409,18 @@ Opal.modules["opal/nodes/args/extract_kwoptarg"] = function(Opal) {
       return (function($base, $parent_nesting) {
         var self = $module($base, 'Args');
 
-        var $nesting = [self].concat($parent_nesting);
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-        return (function($base, $super, $parent_nesting) {
+        return (function($base, $super) {
           var self = $klass($base, $super, 'ExtractKwoptarg');
 
-          var $nesting = [self].concat($parent_nesting), $ExtractKwoptarg_compile$1;
+          var $proto = self.$$prototype;
 
-          self.$$prototype.sexp = nil;
+          $proto.sexp = nil;
           
           self.$handle("extract_kwoptarg");
           self.$children("lvar_name", "default_value");
-          return (Opal.def(self, '$compile', $ExtractKwoptarg_compile$1 = function $$compile() {
+          return $def(self, '$compile', function $$compile() {
             var self = this, key_name = nil;
 
             
@@ -35731,23 +32428,21 @@ Opal.modules["opal/nodes/args/extract_kwoptarg"] = function(Opal) {
             self.$scope().$used_kwargs()['$<<'](key_name);
             self.$add_temp(self.$lvar_name());
             self.$line("" + (self.$lvar_name()) + " = $kwargs.$$smap[" + (key_name.$to_s().$inspect()) + "];");
-            if (self.$default_value().$children()['$[]'](1)['$==']("undefined")) {
-              return nil};
-            self.$line("" + "if (" + (self.$lvar_name()) + " == null) {");
-            self.$line("" + "  " + (self.$lvar_name()) + " = ", self.$expr(self.$default_value()));
-            return self.$line("}");
-          }, $ExtractKwoptarg_compile$1.$$arity = 0), nil) && 'compile';
-        })($nesting[0], $$($nesting, 'Base'), $nesting)
+            if ($eqeq(self.$default_value().$children()['$[]'](1), "undefined")) {
+              return nil
+            };
+            return self.$line("if (" + (self.$lvar_name()) + " == null) " + (self.$lvar_name()) + " = ", self.$expr(self.$default_value()));
+          }, 0);
+        })($nesting[0], $$('Base'))
       })($nesting[0], $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/args/extract_kwrestarg"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send;
+Opal.modules["opal/nodes/args/extract_kwrestarg"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $def = Opal.def, $send = Opal.send;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$name', '$add_temp', '$line', '$used_kwargs', '$map', '$scope', '$join']);
+  Opal.add_stubs('require,handle,children,name,add_temp,line,used_kwargs,map,scope,join');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -35763,53 +32458,45 @@ Opal.modules["opal/nodes/args/extract_kwrestarg"] = function(Opal) {
       return (function($base, $parent_nesting) {
         var self = $module($base, 'Args');
 
-        var $nesting = [self].concat($parent_nesting);
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-        return (function($base, $super, $parent_nesting) {
+        return (function($base, $super) {
           var self = $klass($base, $super, 'ExtractKwrestarg');
 
-          var $nesting = [self].concat($parent_nesting), $ExtractKwrestarg_compile$1, $ExtractKwrestarg_used_kwargs$2;
-
+          
           
           self.$handle("extract_kwrestarg");
           self.$children("name");
           
-          Opal.def(self, '$compile', $ExtractKwrestarg_compile$1 = function $$compile() {
-            var self = this;
-
-            if ($truthy(self.$name())) {
-              
-              self.$add_temp(self.$name());
-              return self.$line("" + (self.$name()) + " = Opal.kwrestargs($kwargs, " + (self.$used_kwargs()) + ");");
-            } else {
-              return nil
-            }
-          }, $ExtractKwrestarg_compile$1.$$arity = 0);
-          return (Opal.def(self, '$used_kwargs', $ExtractKwrestarg_used_kwargs$2 = function $$used_kwargs() {
-            var $$3, self = this, args = nil;
+          $def(self, '$compile', function $$compile() {
+            var self = this, name = nil, $ret_or_1 = nil;
 
             
-            args = $send(self.$scope().$used_kwargs(), 'map', [], ($$3 = function(arg_name){var self = $$3.$$s == null ? this : $$3.$$s;
+            name = ($truthy(($ret_or_1 = self.$name())) ? ($ret_or_1) : ("$kw_rest_arg"));
+            self.$add_temp(name);
+            return self.$line("" + (name) + " = Opal.kwrestargs($kwargs, " + (self.$used_kwargs()) + ");");
+          }, 0);
+          return $def(self, '$used_kwargs', function $$used_kwargs() {
+            var self = this, args = nil;
 
+            
+            args = $send(self.$scope().$used_kwargs(), 'map', [], function $$1(arg_name){
               
               
-              if (arg_name == null) {
-                arg_name = nil;
-              };
-              return "" + "'" + (arg_name) + "': true";}, $$3.$$s = self, $$3.$$arity = 1, $$3));
-            return "" + "{" + (args.$join(",")) + "}";
-          }, $ExtractKwrestarg_used_kwargs$2.$$arity = 0), nil) && 'used_kwargs';
-        })($nesting[0], $$($nesting, 'Base'), $nesting)
+              if (arg_name == null) arg_name = nil;;
+              return "'" + (arg_name) + "': true";}, 1);
+            return "{" + (args.$join(",")) + "}";
+          }, 0);
+        })($nesting[0], $$('Base'))
       })($nesting[0], $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/args/extract_optarg"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass;
+Opal.modules["opal/nodes/args/extract_optarg"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $eqeq = Opal.eqeq, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$==', '$[]', '$default_value', '$line', '$name', '$expr']);
+  Opal.add_stubs('require,handle,children,==,[],default_value,line,name,expr');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -35825,37 +32512,34 @@ Opal.modules["opal/nodes/args/extract_optarg"] = function(Opal) {
       return (function($base, $parent_nesting) {
         var self = $module($base, 'Args');
 
-        var $nesting = [self].concat($parent_nesting);
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-        return (function($base, $super, $parent_nesting) {
+        return (function($base, $super) {
           var self = $klass($base, $super, 'ExtractOptargNode');
 
-          var $nesting = [self].concat($parent_nesting), $ExtractOptargNode_compile$1;
-
+          
           
           self.$handle("extract_optarg");
           self.$children("name", "default_value");
-          return (Opal.def(self, '$compile', $ExtractOptargNode_compile$1 = function $$compile() {
+          return $def(self, '$compile', function $$compile() {
             var self = this;
 
             
-            if (self.$default_value().$children()['$[]'](1)['$==']("undefined")) {
-              return nil};
-            self.$line("" + "if (" + (self.$name()) + " == null) {");
-            self.$line("" + "  " + (self.$name()) + " = ", self.$expr(self.$default_value()), ";");
-            return self.$line("}");
-          }, $ExtractOptargNode_compile$1.$$arity = 0), nil) && 'compile';
-        })($nesting[0], $$($nesting, 'Base'), $nesting)
+            if ($eqeq(self.$default_value().$children()['$[]'](1), "undefined")) {
+              return nil
+            };
+            return self.$line("if (" + (self.$name()) + " == null) " + (self.$name()) + " = ", self.$expr(self.$default_value()), ";");
+          }, 0);
+        })($nesting[0], $$('Base'))
       })($nesting[0], $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/args/extract_post_arg"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass;
+Opal.modules["opal/nodes/args/extract_post_arg"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$add_temp', '$name', '$line']);
+  Opal.add_stubs('require,handle,children,add_temp,name,line');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -35871,38 +32555,33 @@ Opal.modules["opal/nodes/args/extract_post_arg"] = function(Opal) {
       return (function($base, $parent_nesting) {
         var self = $module($base, 'Args');
 
-        var $nesting = [self].concat($parent_nesting);
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-        return (function($base, $super, $parent_nesting) {
+        return (function($base, $super) {
           var self = $klass($base, $super, 'ExtractPostArg');
 
-          var $nesting = [self].concat($parent_nesting), $ExtractPostArg_compile$1;
-
+          
           
           self.$handle("extract_post_arg");
           self.$children("name");
-          return (Opal.def(self, '$compile', $ExtractPostArg_compile$1 = function $$compile() {
+          return $def(self, '$compile', function $$compile() {
             var self = this;
 
             
             self.$add_temp(self.$name());
-            self.$line("" + (self.$name()) + " = $post_args[0];");
-            self.$line("$post_args.splice(0, 1);");
-            self.$line("" + "if (" + (self.$name()) + " == null) {");
-            self.$line("" + "  " + (self.$name()) + " = nil");
-            return self.$line("}");
-          }, $ExtractPostArg_compile$1.$$arity = 0), nil) && 'compile';
-        })($nesting[0], $$($nesting, 'Base'), $nesting)
+            self.$line("" + (self.$name()) + " = $post_args.shift();");
+            return self.$line("if (" + (self.$name()) + " == null) " + (self.$name()) + " = nil;");
+          }, 0);
+        })($nesting[0], $$('Base'))
       })($nesting[0], $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/args/extract_post_optarg"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass;
+Opal.modules["opal/nodes/args/extract_post_optarg"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $eqeq = Opal.eqeq, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$add_temp', '$name', '$line', '$args_to_keep', '$==', '$[]', '$default_value', '$expr']);
+  Opal.add_stubs('require,handle,children,add_temp,name,line,args_to_keep,==,[],default_value,expr');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -35918,42 +32597,36 @@ Opal.modules["opal/nodes/args/extract_post_optarg"] = function(Opal) {
       return (function($base, $parent_nesting) {
         var self = $module($base, 'Args');
 
-        var $nesting = [self].concat($parent_nesting);
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-        return (function($base, $super, $parent_nesting) {
+        return (function($base, $super) {
           var self = $klass($base, $super, 'ExtractPostOptarg');
 
-          var $nesting = [self].concat($parent_nesting), $ExtractPostOptarg_compile$1;
-
+          
           
           self.$handle("extract_post_optarg");
           self.$children("name", "default_value", "args_to_keep");
-          return (Opal.def(self, '$compile', $ExtractPostOptarg_compile$1 = function $$compile() {
+          return $def(self, '$compile', function $$compile() {
             var self = this;
 
             
             self.$add_temp(self.$name());
-            self.$line("" + "if ($post_args.length > " + (self.$args_to_keep()) + ") {");
-            self.$line("" + "  " + (self.$name()) + " = $post_args[0];");
-            self.$line("  $post_args.splice(0, 1);");
-            self.$line("}");
-            if (self.$default_value().$children()['$[]'](1)['$==']("undefined")) {
-              return nil};
-            self.$line("" + "if (" + (self.$name()) + " == null) {");
-            self.$line("" + "  " + (self.$name()) + " = ", self.$expr(self.$default_value()), ";");
-            return self.$line("}");
-          }, $ExtractPostOptarg_compile$1.$$arity = 0), nil) && 'compile';
-        })($nesting[0], $$($nesting, 'Base'), $nesting)
+            self.$line("if ($post_args.length > " + (self.$args_to_keep()) + ") " + (self.$name()) + " = $post_args.shift();");
+            if ($eqeq(self.$default_value().$children()['$[]'](1), "undefined")) {
+              return nil
+            };
+            return self.$line("if (" + (self.$name()) + " == null) " + (self.$name()) + " = ", self.$expr(self.$default_value()), ";");
+          }, 0);
+        })($nesting[0], $$('Base'))
       })($nesting[0], $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/args/extract_restarg"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy;
+Opal.modules["opal/nodes/args/extract_restarg"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $eqeq = Opal.eqeq, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$name', '$add_temp', '$==', '$args_to_keep', '$line', '$!=']);
+  Opal.add_stubs('require,handle,children,name,add_temp,==,args_to_keep,line');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -35969,44 +32642,37 @@ Opal.modules["opal/nodes/args/extract_restarg"] = function(Opal) {
       return (function($base, $parent_nesting) {
         var self = $module($base, 'Args');
 
-        var $nesting = [self].concat($parent_nesting);
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-        return (function($base, $super, $parent_nesting) {
+        return (function($base, $super) {
           var self = $klass($base, $super, 'ExtractRestarg');
 
-          var $nesting = [self].concat($parent_nesting), $ExtractRestarg_compile$1;
-
+          
           
           self.$handle("extract_restarg");
           self.$children("name", "args_to_keep");
-          return (Opal.def(self, '$compile', $ExtractRestarg_compile$1 = function $$compile() {
-            var self = this;
+          return $def(self, '$compile', function $$compile() {
+            var self = this, name = nil, $ret_or_1 = nil;
 
-            if ($truthy(self.$name())) {
-              
-              self.$add_temp(self.$name());
-              if (self.$args_to_keep()['$=='](0)) {
-                return self.$line("" + (self.$name()) + " = $post_args;")
-              } else {
-                return self.$line("" + (self.$name()) + " = $post_args.splice(0, $post_args.length - " + (self.$args_to_keep()) + ");")
-              };
-            } else if ($truthy(self.$args_to_keep()['$!='](0))) {
-              return self.$line("" + "$post_args.splice(0, $post_args.length - " + (self.$args_to_keep()) + ");")
+            
+            name = ($truthy(($ret_or_1 = self.$name())) ? ($ret_or_1) : ("$rest_arg"));
+            self.$add_temp(name);
+            if ($eqeq(self.$args_to_keep(), 0)) {
+              return self.$line("" + (name) + " = $post_args;")
             } else {
-              return nil
-            }
-          }, $ExtractRestarg_compile$1.$$arity = 0), nil) && 'compile';
-        })($nesting[0], $$($nesting, 'Base'), $nesting)
+              return self.$line("" + (name) + " = $post_args.splice(0, $post_args.length - " + (self.$args_to_keep()) + ");")
+            };
+          }, 0);
+        })($nesting[0], $$('Base'))
       })($nesting[0], $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/args/fake_arg"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass;
+Opal.modules["opal/nodes/args/fake_arg"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$next_temp', '$scope', '$add_arg', '$push']);
+  Opal.add_stubs('require,handle,next_temp,scope,add_arg,push');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -36022,34 +32688,32 @@ Opal.modules["opal/nodes/args/fake_arg"] = function(Opal) {
       return (function($base, $parent_nesting) {
         var self = $module($base, 'Args');
 
-        var $nesting = [self].concat($parent_nesting);
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-        return (function($base, $super, $parent_nesting) {
+        return (function($base, $super) {
           var self = $klass($base, $super, 'FakeArgNode');
 
-          var $nesting = [self].concat($parent_nesting), $FakeArgNode_compile$1;
-
+          
           
           self.$handle("fake_arg");
-          return (Opal.def(self, '$compile', $FakeArgNode_compile$1 = function $$compile() {
+          return $def(self, '$compile', function $$compile() {
             var self = this, name = nil;
 
             
             name = self.$scope().$next_temp();
             self.$scope().$add_arg(name);
             return self.$push(name);
-          }, $FakeArgNode_compile$1.$$arity = 0), nil) && 'compile';
-        })($nesting[0], $$($nesting, 'Base'), $nesting)
+          }, 0);
+        })($nesting[0], $$('Base'))
       })($nesting[0], $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/args/initialize_iterarg"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass;
+Opal.modules["opal/nodes/args/initialize_iterarg"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$line', '$name']);
+  Opal.add_stubs('require,handle,children,line,name');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -36065,35 +32729,30 @@ Opal.modules["opal/nodes/args/initialize_iterarg"] = function(Opal) {
       return (function($base, $parent_nesting) {
         var self = $module($base, 'Args');
 
-        var $nesting = [self].concat($parent_nesting);
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-        return (function($base, $super, $parent_nesting) {
+        return (function($base, $super) {
           var self = $klass($base, $super, 'InitializeIterarg');
 
-          var $nesting = [self].concat($parent_nesting), $InitializeIterarg_compile$1;
-
+          
           
           self.$handle("initialize_iter_arg");
           self.$children("name");
-          return (Opal.def(self, '$compile', $InitializeIterarg_compile$1 = function $$compile() {
+          return $def(self, '$compile', function $$compile() {
             var self = this;
 
-            
-            self.$line("" + "if (" + (self.$name()) + " == null) {");
-            self.$line("" + "  " + (self.$name()) + " = nil;");
-            return self.$line("}");
-          }, $InitializeIterarg_compile$1.$$arity = 0), nil) && 'compile';
-        })($nesting[0], $$($nesting, 'Base'), $nesting)
+            return self.$line("if (" + (self.$name()) + " == null) " + (self.$name()) + " = nil;")
+          }, 0);
+        })($nesting[0], $$('Base'))
       })($nesting[0], $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/args/initialize_shadowarg"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass;
+Opal.modules["opal/nodes/args/initialize_shadowarg"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$<<', '$locals', '$scope', '$name', '$add_arg', '$line']);
+  Opal.add_stubs('require,handle,children,<<,locals,scope,name,add_arg,line');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -36109,35 +32768,33 @@ Opal.modules["opal/nodes/args/initialize_shadowarg"] = function(Opal) {
       return (function($base, $parent_nesting) {
         var self = $module($base, 'Args');
 
-        var $nesting = [self].concat($parent_nesting);
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-        return (function($base, $super, $parent_nesting) {
+        return (function($base, $super) {
           var self = $klass($base, $super, 'InitializeShadowarg');
 
-          var $nesting = [self].concat($parent_nesting), $InitializeShadowarg_compile$1;
-
+          
           
           self.$handle("initialize_shadowarg");
           self.$children("name");
-          return (Opal.def(self, '$compile', $InitializeShadowarg_compile$1 = function $$compile() {
+          return $def(self, '$compile', function $$compile() {
             var self = this;
 
             
             self.$scope().$locals()['$<<'](self.$name());
             self.$scope().$add_arg(self.$name());
             return self.$line("" + (self.$name()) + " = nil;");
-          }, $InitializeShadowarg_compile$1.$$arity = 0), nil) && 'compile';
-        })($nesting[0], $$($nesting, 'Base'), $nesting)
+          }, 0);
+        })($nesting[0], $$('Base'))
       })($nesting[0], $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/args/parameters"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy;
+Opal.modules["opal/nodes/args/parameters"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $def = Opal.def, $send = Opal.send, $to_a = Opal.to_a, $truthy = Opal.truthy, $eqeq = Opal.eqeq;
 
-  Opal.add_stubs(['$children', '$map', '$public_send', '$type', '$join', '$compact', '$==']);
+  Opal.add_stubs('children,map,public_send,type,join,compact,==');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Opal');
 
@@ -36153,132 +32810,119 @@ Opal.modules["opal/nodes/args/parameters"] = function(Opal) {
 
         var $nesting = [self].concat($parent_nesting);
 
-        return (function($base, $super, $parent_nesting) {
+        return (function($base, $super) {
           var self = $klass($base, $super, 'Parameters');
 
-          var $nesting = [self].concat($parent_nesting), $Parameters_initialize$1, $Parameters_to_code$2, $Parameters_on_arg$4, $Parameters_on_mlhs$5, $Parameters_on_optarg$6, $Parameters_on_restarg$7, $Parameters_on_kwarg$8, $Parameters_on_kwoptarg$9, $Parameters_on_kwrestarg$10, $Parameters_on_blockarg$11, $Parameters_on_kwnilarg$12, $Parameters_on_shadowarg$13;
+          var $proto = self.$$prototype;
 
-          self.$$prototype.args = nil;
+          $proto.args = nil;
           
           
-          Opal.def(self, '$initialize', $Parameters_initialize$1 = function $$initialize(args) {
+          $def(self, '$initialize', function $$initialize(args) {
             var self = this;
 
             return (self.args = args.$children())
-          }, $Parameters_initialize$1.$$arity = 1);
+          }, 1);
           
-          Opal.def(self, '$to_code', $Parameters_to_code$2 = function $$to_code() {
-            var $$3, self = this, stringified_parameters = nil;
+          $def(self, '$to_code', function $$to_code() {
+            var self = this, stringified_parameters = nil;
 
             
-            stringified_parameters = $send(self.args, 'map', [], ($$3 = function(arg){var self = $$3.$$s == null ? this : $$3.$$s;
+            stringified_parameters = $send(self.args, 'map', [], function $$1(arg){var self = $$1.$$s == null ? this : $$1.$$s;
 
               
               
-              if (arg == null) {
-                arg = nil;
-              };
-              return $send(self, 'public_send', ["" + "on_" + (arg.$type())].concat(Opal.to_a(arg)));}, $$3.$$s = self, $$3.$$arity = 1, $$3));
-            return "" + "[" + (stringified_parameters.$compact().$join(", ")) + "]";
-          }, $Parameters_to_code$2.$$arity = 0);
+              if (arg == null) arg = nil;;
+              return $send(self, 'public_send', ["on_" + (arg.$type())].concat($to_a(arg)));}, {$$arity: 1, $$s: self});
+            return "[" + (stringified_parameters.$compact().$join(", ")) + "]";
+          }, 0);
           
-          Opal.def(self, '$on_arg', $Parameters_on_arg$4 = function $$on_arg(arg_name) {
-            var self = this;
-
-            return "" + "['req', '" + (arg_name) + "']"
-          }, $Parameters_on_arg$4.$$arity = 1);
+          $def(self, '$on_arg', function $$on_arg(arg_name) {
+            
+            return "['req', '" + (arg_name) + "']"
+          }, 1);
           
-          Opal.def(self, '$on_mlhs', $Parameters_on_mlhs$5 = function $$on_mlhs($a) {
-            var $post_args, self = this;
+          $def(self, '$on_mlhs', function $$on_mlhs($a) {
+            var $post_args, $rest_arg;
 
             
             
-            $post_args = Opal.slice.call(arguments, 0, arguments.length);
-            ;
+            $post_args = Opal.slice.call(arguments);
+            
+            $rest_arg = $post_args;;
             return "['req']";
-          }, $Parameters_on_mlhs$5.$$arity = -1);
+          }, -1);
           
-          Opal.def(self, '$on_optarg', $Parameters_on_optarg$6 = function $$on_optarg(arg_name, _default_value) {
-            var self = this;
-
-            return "" + "['opt', '" + (arg_name) + "']"
-          }, $Parameters_on_optarg$6.$$arity = 2);
+          $def(self, '$on_optarg', function $$on_optarg(arg_name, _default_value) {
+            
+            return "['opt', '" + (arg_name) + "']"
+          }, 2);
           
-          Opal.def(self, '$on_restarg', $Parameters_on_restarg$7 = function $$on_restarg(arg_name) {
-            var self = this;
-
+          $def(self, '$on_restarg', function $$on_restarg(arg_name) {
             
             
-            if (arg_name == null) {
-              arg_name = nil;
-            };
+            
+            if (arg_name == null) arg_name = nil;;
             if ($truthy(arg_name)) {
               
-              if (arg_name['$==']("fwd_rest_arg")) {
-                arg_name = "*"};
-              return "" + "['rest', '" + (arg_name) + "']";
+              if ($eqeq(arg_name, "fwd_rest_arg")) {
+                arg_name = "*"
+              };
+              return "['rest', '" + (arg_name) + "']";
             } else {
               return "['rest']"
             };
-          }, $Parameters_on_restarg$7.$$arity = -1);
+          }, -1);
           
-          Opal.def(self, '$on_kwarg', $Parameters_on_kwarg$8 = function $$on_kwarg(arg_name) {
-            var self = this;
-
-            return "" + "['keyreq', '" + (arg_name) + "']"
-          }, $Parameters_on_kwarg$8.$$arity = 1);
+          $def(self, '$on_kwarg', function $$on_kwarg(arg_name) {
+            
+            return "['keyreq', '" + (arg_name) + "']"
+          }, 1);
           
-          Opal.def(self, '$on_kwoptarg', $Parameters_on_kwoptarg$9 = function $$on_kwoptarg(arg_name, _default_value) {
-            var self = this;
-
-            return "" + "['key', '" + (arg_name) + "']"
-          }, $Parameters_on_kwoptarg$9.$$arity = 2);
+          $def(self, '$on_kwoptarg', function $$on_kwoptarg(arg_name, _default_value) {
+            
+            return "['key', '" + (arg_name) + "']"
+          }, 2);
           
-          Opal.def(self, '$on_kwrestarg', $Parameters_on_kwrestarg$10 = function $$on_kwrestarg(arg_name) {
-            var self = this;
-
+          $def(self, '$on_kwrestarg', function $$on_kwrestarg(arg_name) {
             
             
-            if (arg_name == null) {
-              arg_name = nil;
-            };
+            
+            if (arg_name == null) arg_name = nil;;
             if ($truthy(arg_name)) {
-              return "" + "['keyrest', '" + (arg_name) + "']"
+              return "['keyrest', '" + (arg_name) + "']"
             } else {
               return "['keyrest']"
             };
-          }, $Parameters_on_kwrestarg$10.$$arity = -1);
+          }, -1);
           
-          Opal.def(self, '$on_blockarg', $Parameters_on_blockarg$11 = function $$on_blockarg(arg_name) {
-            var self = this;
-
+          $def(self, '$on_blockarg', function $$on_blockarg(arg_name) {
             
-            if (arg_name['$==']("fwd_block_arg")) {
-              arg_name = "&"};
-            return "" + "['block', '" + (arg_name) + "']";
-          }, $Parameters_on_blockarg$11.$$arity = 1);
+            
+            if ($eqeq(arg_name, "fwd_block_arg")) {
+              arg_name = "&"
+            };
+            return "['block', '" + (arg_name) + "']";
+          }, 1);
           
-          Opal.def(self, '$on_kwnilarg', $Parameters_on_kwnilarg$12 = function $$on_kwnilarg() {
-            var self = this;
-
+          $def(self, '$on_kwnilarg', function $$on_kwnilarg() {
+            
             return "['nokey']"
-          }, $Parameters_on_kwnilarg$12.$$arity = 0);
-          return (Opal.def(self, '$on_shadowarg', $Parameters_on_shadowarg$13 = function $$on_shadowarg(_arg_name) {
-            var self = this;
-
+          }, 0);
+          return $def(self, '$on_shadowarg', function $$on_shadowarg(_arg_name) {
+            
             return nil
-          }, $Parameters_on_shadowarg$13.$$arity = 1), nil) && 'on_shadowarg';
-        })($nesting[0], null, $nesting)
+          }, 1);
+        })($nesting[0], null)
       })($nesting[0], $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/args/prepare_post_args"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass;
+Opal.modules["opal/nodes/args/prepare_post_args"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $eqeq = Opal.eqeq, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$add_temp', '$line', '$offset']);
+  Opal.add_stubs('require,handle,children,add_temp,==,offset,line');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -36294,43 +32938,36 @@ Opal.modules["opal/nodes/args/prepare_post_args"] = function(Opal) {
       return (function($base, $parent_nesting) {
         var self = $module($base, 'Args');
 
-        var $nesting = [self].concat($parent_nesting);
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-        return (function($base, $super, $parent_nesting) {
+        return (function($base, $super) {
           var self = $klass($base, $super, 'PreparePostArgs');
 
-          var $nesting = [self].concat($parent_nesting), $PreparePostArgs_compile$1;
-
+          
           
           self.$handle("prepare_post_args");
           self.$children("offset");
-          return (Opal.def(self, '$compile', $PreparePostArgs_compile$1 = function $$compile() {
+          return $def(self, '$compile', function $$compile() {
             var self = this;
 
             
             self.$add_temp("$post_args");
-            return self.$line("" + "$post_args = Opal.slice.call(arguments, " + (self.$offset()) + ", arguments.length)");
-          }, $PreparePostArgs_compile$1.$$arity = 0), nil) && 'compile';
-        })($nesting[0], $$($nesting, 'Base'), $nesting)
+            if ($eqeq(self.$offset(), 0)) {
+              return self.$line("$post_args = Opal.slice.call(arguments)")
+            } else {
+              return self.$line("$post_args = Opal.slice.call(arguments, " + (self.$offset()) + ")")
+            };
+          }, 0);
+        })($nesting[0], $$('Base'))
       })($nesting[0], $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/args"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $hash2 = Opal.hash2, $send = Opal.send, $truthy = Opal.truthy;
-
-  Opal.add_stubs(['$require', '$handle', '$each_with_index', '$children', '$multiple_underscore?', '$[]', '$[]=', '$-', '$+', '$>', '$s', '$type', '$!=', '$push', '$process', '$==', '$count', '$start_with?', '$to_s', '$first']);
+Opal.modules["opal/nodes/args"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $hash2 = Opal.hash2, $send = Opal.send, $truthy = Opal.truthy, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $rb_plus = Opal.rb_plus, $rb_gt = Opal.rb_gt, $neqeq = Opal.neqeq, $def = Opal.def;
+
+  Opal.add_stubs('require,handle,each_with_index,children,multiple_underscore?,[],[]=,-,+,>,s,type,!=,push,process,==,count,start_with?,to_s,first');
   
   self.$require("opal/nodes/base");
   self.$require("opal/nodes/args/arg");
@@ -36358,32 +32995,27 @@ Opal.modules["opal/nodes/args"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'ArgsNode');
 
-        var $nesting = [self].concat($parent_nesting), $ArgsNode_compile$1, $ArgsNode_multiple_underscore$ques$3;
-
+        
         
         self.$handle("args");
         
-        Opal.def(self, '$compile', $ArgsNode_compile$1 = function $$compile() {
-          var $$2, self = this, same_arg_counter = nil;
+        $def(self, '$compile', function $$compile() {
+          var self = this, same_arg_counter = nil;
 
           
           same_arg_counter = $hash2([], {});
-          return $send(self.$children(), 'each_with_index', [], ($$2 = function(arg, idx){var self = $$2.$$s == null ? this : $$2.$$s, $ret_or_1 = nil, $writer = nil;
+          return $send(self.$children(), 'each_with_index', [], function $$1(arg, idx){var self = $$1.$$s == null ? this : $$1.$$s, $ret_or_1 = nil, $writer = nil;
 
             
             
-            if (arg == null) {
-              arg = nil;
-            };
+            if (arg == null) arg = nil;;
             
-            if (idx == null) {
-              idx = nil;
-            };
+            if (idx == null) idx = nil;;
             if ($truthy(self['$multiple_underscore?'](arg))) {
               
               if ($truthy(($ret_or_1 = same_arg_counter['$[]'](arg)))) {
@@ -36391,46 +33023,40 @@ Opal.modules["opal/nodes/args"] = function(Opal) {
               } else {
                 
                 $writer = [arg, 0];
-                $send(same_arg_counter, '[]=', Opal.to_a($writer));
+                $send(same_arg_counter, '[]=', $to_a($writer));
                 $writer[$rb_minus($writer["length"], 1)];
               };
               
               $writer = [arg, $rb_plus(same_arg_counter['$[]'](arg), 1)];
-              $send(same_arg_counter, '[]=', Opal.to_a($writer));
+              $send(same_arg_counter, '[]=', $to_a($writer));
               $writer[$rb_minus($writer["length"], 1)];;
               if ($truthy($rb_gt(same_arg_counter['$[]'](arg), 1))) {
-                arg = self.$s(arg.$type(), "" + (arg.$children()['$[]'](0)) + "_$" + (same_arg_counter['$[]'](arg)))};};
-            if ($truthy(idx['$!='](0))) {
-              self.$push(", ")};
-            return self.$push(self.$process(arg));}, $$2.$$s = self, $$2.$$arity = 2, $$2));
-        }, $ArgsNode_compile$1.$$arity = 0);
-        return (Opal.def(self, '$multiple_underscore?', $ArgsNode_multiple_underscore$ques$3 = function(arg) {
-          var self = this, $ret_or_2 = nil, $ret_or_3 = nil, $ret_or_4 = nil;
-
-          if ($truthy(($ret_or_2 = (function() {if ($truthy(($ret_or_3 = (function() {if ($truthy(($ret_or_4 = arg.$type()['$==']("arg")))) {
-            return arg.$children().$count()['$=='](1)
-          } else {
-            return $ret_or_4
-          }; return nil; })()))) {
-            return arg.$children().$first().$to_s()['$start_with?']("_")
-          } else {
-            return $ret_or_3
-          }; return nil; })()))) {
+                arg = self.$s(arg.$type(), "" + (arg.$children()['$[]'](0)) + "_$" + (same_arg_counter['$[]'](arg)))
+              };
+            };
+            if ($neqeq(idx, 0)) {
+              self.$push(", ")
+            };
+            return self.$push(self.$process(arg));}, {$$arity: 2, $$s: self});
+        }, 0);
+        return $def(self, '$multiple_underscore?', function $ArgsNode_multiple_underscore$ques$2(arg) {
+          var self = this, $ret_or_1 = nil, $ret_or_2 = nil, $ret_or_3 = nil;
+
+          if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = ($truthy(($ret_or_3 = arg.$type()['$==']("arg"))) ? (arg.$children().$count()['$=='](1)) : ($ret_or_3)))) ? (arg.$children().$first().$to_s()['$start_with?']("_")) : ($ret_or_2))))) {
             return $rb_gt(self.$children().$count(arg), 1)
           } else {
-            return $ret_or_2
+            return $ret_or_1
           }
-        }, $ArgsNode_multiple_underscore$ques$3.$$arity = 1), nil) && 'multiple_underscore?';
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+        }, 1);
+      })($nesting[0], $$('Base'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/node_with_args"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $truthy = Opal.truthy;
+Opal.modules["opal/nodes/node_with_args"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $to_a = Opal.to_a, $def = Opal.def, $truthy = Opal.truthy;
 
-  Opal.add_stubs(['$require', '$attr_reader', '$attr_accessor', '$[]', '$meta', '$s', '$original_args', '$push', '$process', '$arity_check_node', '$uses_block?', '$scope', '$identity', '$block_name', '$add_temp', '$line', '$to_code', '$new']);
+  Opal.add_stubs('require,attr_reader,attr_accessor,[],meta,s,original_args,push,process,arity_check_node,uses_block?,scope,prepare_block,to_code,new');
   
   self.$require("opal/nodes/scope");
   self.$require("opal/nodes/args/parameters");
@@ -36442,85 +33068,69 @@ Opal.modules["opal/nodes/node_with_args"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'NodeWithArgs');
 
-        var $nesting = [self].concat($parent_nesting), $NodeWithArgs_initialize$1, $NodeWithArgs_arity_check_node$2, $NodeWithArgs_compile_arity_check$3, $NodeWithArgs_compile_block_arg$4, $NodeWithArgs_parameters_code$5;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.sexp = nil;
+        $proto.sexp = nil;
         
         self.$attr_reader("used_kwargs");
         self.$attr_accessor("arity");
         self.$attr_reader("original_args");
         
-        Opal.def(self, '$initialize', $NodeWithArgs_initialize$1 = function $$initialize($a) {
-          var $post_args, $iter = $NodeWithArgs_initialize$1.$$p, $yield = $iter || nil, self = this, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        $def(self, '$initialize', function $$initialize($a) {
+          var $post_args, $rest_arg, $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $NodeWithArgs_initialize$1.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$initialize.$$p;
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
-          ;
-          $send2(self, $find_super(self, 'initialize', $NodeWithArgs_initialize$1, false, true), 'initialize', $zuper, $iter);
+          $post_args = Opal.slice.call(arguments);
+          
+          $rest_arg = $post_args;;
+          $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', $to_a($rest_arg), $yield);
           self.original_args = self.sexp.$meta()['$[]']("original_args");
           self.used_kwargs = [];
           return (self.arity = 0);
-        }, $NodeWithArgs_initialize$1.$$arity = -1);
+        }, -1);
         
-        Opal.def(self, '$arity_check_node', $NodeWithArgs_arity_check_node$2 = function $$arity_check_node() {
+        $def(self, '$arity_check_node', function $$arity_check_node() {
           var self = this;
 
           return self.$s("arity_check", self.$original_args())
-        }, $NodeWithArgs_arity_check_node$2.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_arity_check', $NodeWithArgs_compile_arity_check$3 = function $$compile_arity_check() {
+        $def(self, '$compile_arity_check', function $$compile_arity_check() {
           var self = this;
 
           return self.$push(self.$process(self.$arity_check_node()))
-        }, $NodeWithArgs_compile_arity_check$3.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_block_arg', $NodeWithArgs_compile_block_arg$4 = function $$compile_block_arg() {
-          var self = this, scope_name = nil, yielder = nil, $ret_or_1 = nil;
+        $def(self, '$compile_block_arg', function $$compile_block_arg() {
+          var self = this;
 
           if ($truthy(self.$scope()['$uses_block?']())) {
-            
-            scope_name = self.$scope().$identity();
-            yielder = (function() {if ($truthy(($ret_or_1 = self.$scope().$block_name()))) {
-              return $ret_or_1
-            } else {
-              return "$yield"
-            }; return nil; })();
-            self.$add_temp("" + "$iter = " + (scope_name) + ".$$p");
-            self.$add_temp("" + (yielder) + " = $iter || nil");
-            return self.$line("" + "if ($iter) " + (scope_name) + ".$$p = null;");
+            return self.$scope().$prepare_block()
           } else {
             return nil
           }
-        }, $NodeWithArgs_compile_block_arg$4.$$arity = 0);
-        return (Opal.def(self, '$parameters_code', $NodeWithArgs_parameters_code$5 = function $$parameters_code() {
+        }, 0);
+        return $def(self, '$parameters_code', function $$parameters_code() {
           var self = this;
 
-          return $$$($$($nesting, 'Args'), 'Parameters').$new(self.$original_args()).$to_code()
-        }, $NodeWithArgs_parameters_code$5.$$arity = 0), nil) && 'parameters_code';
-      })($nesting[0], $$($nesting, 'ScopeNode'), $nesting)
+          return $$$($$('Args'), 'Parameters').$new(self.$original_args()).$to_code()
+        }, 0);
+      })($nesting[0], $$('ScopeNode'), $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/iter"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send;
+Opal.modules["opal/nodes/iter"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send, $eqeq = Opal.eqeq, $rb_gt = Opal.rb_gt, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$lambda_definition?', '$scope', '$is_lambda!', '$in_scope', '$identify!', '$add_temp', '$process', '$inline_args', '$compile_arity_check', '$stmt', '$returned_body', '$to_vars', '$line', '$catch_return', '$unshift', '$push', '$contains_break?', '$arity', '$arity_check?', '$compiler', '$parameters_code', '$has_top_level_mlhs_arg?', '$has_trailing_comma_in_args?', '$block_arg', '$block_name=', '$-', '$each', '$args', '$first', '$==', '$<<', '$updated', '$body', '$returns', '$s', '$any?', '$original_args', '$type', '$loc', '$expression', '$source', '$match', '$new', '$found_break?']);
+  Opal.add_stubs('require,handle,children,lambda_definition?,scope,is_lambda!,in_scope,identify!,process,inline_args,compile_arity_check,stmt,returned_body,add_temp,to_vars,line,catch_return,unshift,push,await_encountered,<<,arity,self,contains_break?,arity_check?,compiler,parameters_code,has_top_level_mlhs_arg?,has_trailing_comma_in_args?,==,length,>,join,nesting,relative_access,block_arg,prepare_block,each,args,first,updated,body,returns,s,any?,original_args,type,expression,loc,source,match,new,found_break?');
   
   self.$require("opal/nodes/node_with_args");
   self.$require("opal/rewriters/break_finder");
@@ -36532,34 +33142,38 @@ Opal.modules["opal/nodes/iter"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'IterNode');
 
-        var $nesting = [self].concat($parent_nesting), $IterNode_compile$1, $IterNode_compile_block_arg$3, $IterNode_extract_underscore_args$4, $IterNode_returned_body$6, $IterNode_has_top_level_mlhs_arg$ques$7, $IterNode_has_trailing_comma_in_args$ques$9, $IterNode_arity_check_node$10, $IterNode_contains_break$ques$11;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.sexp = nil;
+        $proto.define_self = $proto.define_nesting = $proto.define_relative_access = $proto.sexp = nil;
         
         self.$handle("iter");
         self.$children("inline_args", "body");
         
-        Opal.def(self, '$compile', $IterNode_compile$1 = function $$compile() {
-          var $$2, self = this, inline_params = nil, to_vars = nil, identity = nil, body_code = nil;
+        $def(self, '$compile', function $$compile() {
+          var self = this, inline_params = nil, to_vars = nil, identity = nil, body_code = nil, blockopts = nil;
 
           
           if ($truthy(self.$scope()['$lambda_definition?']())) {
-            self['$is_lambda!']()};
+            self['$is_lambda!']()
+          };
           inline_params = nil;
           to_vars = (identity = (body_code = nil));
-          $send(self, 'in_scope', [], ($$2 = function(){var self = $$2.$$s == null ? this : $$2.$$s;
+          $send(self, 'in_scope', [], function $$1(){var self = $$1.$$s == null ? this : $$1.$$s;
+            if (self.define_self == null) self.define_self = nil;
 
             
             identity = self.$scope()['$identify!']();
-            self.$add_temp("" + "self = " + (identity) + ".$$s == null ? this : " + (identity) + ".$$s");
             inline_params = self.$process(self.$inline_args());
             self.$compile_arity_check();
             body_code = self.$stmt(self.$returned_body());
+            if ($truthy(self.define_self)) {
+              self.$add_temp("self = " + (identity) + ".$$s == null ? this : " + (identity) + ".$$s")
+            };
             to_vars = self.$scope().$to_vars();
             self.$line(body_code);
             if ($truthy(self.$scope().$catch_return())) {
@@ -36569,55 +33183,69 @@ Opal.modules["opal/nodes/iter"] = function(Opal) {
               return self.$push(" throw $returner; }");
             } else {
               return nil
-            };}, $$2.$$s = self, $$2.$$arity = 0, $$2));
+            };}, {$$arity: 0, $$s: self});
           self.$unshift(to_vars);
-          self.$unshift("" + "(" + (identity) + " = function(", inline_params, "){");
-          self.$push("" + "}, " + (identity) + ".$$s = self,");
+          if ($truthy(self.$await_encountered())) {
+            self.$unshift("async function " + (identity) + "(", inline_params, "){")
+          } else {
+            self.$unshift("function " + (identity) + "(", inline_params, "){")
+          };
+          self.$push("}");
+          blockopts = [];
+          blockopts['$<<']("$$arity: " + (self.$arity()));
+          if ($truthy(self.define_self)) {
+            blockopts['$<<']("$$s: " + (self.$scope().$self()))
+          };
           if ($truthy(self['$contains_break?']())) {
-            self.$push("" + " " + (identity) + ".$$brk = $brk,")};
-          self.$push("" + " " + (identity) + ".$$arity = " + (self.$arity()) + ",");
+            blockopts['$<<']("$$brk: $brk")
+          };
           if ($truthy(self.$compiler()['$arity_check?']())) {
-            self.$push("" + " " + (identity) + ".$$parameters = " + (self.$parameters_code()) + ",")};
+            blockopts['$<<']("$$parameters: " + (self.$parameters_code()))
+          };
           if ($truthy(self['$has_top_level_mlhs_arg?']())) {
-            self.$push("" + " " + (identity) + ".$$has_top_level_mlhs_arg = true,")};
+            blockopts['$<<']("$$has_top_level_mlhs_arg: true")
+          };
           if ($truthy(self['$has_trailing_comma_in_args?']())) {
-            self.$push("" + " " + (identity) + ".$$has_trailing_comma_in_args = true,")};
-          return self.$push("" + " " + (identity) + ")");
-        }, $IterNode_compile$1.$$arity = 0);
+            blockopts['$<<']("$$has_trailing_comma_in_args: true")
+          };
+          if ($eqeq(blockopts.$length(), 1)) {
+            self.$push(", " + (self.$arity()))
+          } else if ($truthy($rb_gt(blockopts.$length(), 1))) {
+            self.$push(", {", blockopts.$join(", "), "}")
+          };
+          if ($truthy(self.define_nesting)) {
+            self.$scope().$nesting()
+          };
+          if ($truthy(self.define_relative_access)) {
+            return self.$scope().$relative_access()
+          } else {
+            return nil
+          };
+        }, 0);
         
-        Opal.def(self, '$compile_block_arg', $IterNode_compile_block_arg$3 = function $$compile_block_arg() {
-          var self = this, $writer = nil, scope_name = nil;
+        $def(self, '$compile_block_arg', function $$compile_block_arg() {
+          var self = this;
 
           if ($truthy(self.$block_arg())) {
-            
-            
-            $writer = [self.$block_arg()];
-            $send(self.$scope(), 'block_name=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];;
-            self.$scope().$add_temp(self.$block_arg());
-            scope_name = self.$scope()['$identify!']();
-            self.$line("" + (self.$block_arg()) + " = " + (scope_name) + ".$$p || nil;");
-            return self.$line("" + "if (" + (self.$block_arg()) + ") " + (scope_name) + ".$$p = null;");
+            return self.$scope().$prepare_block()
           } else {
             return nil
           }
-        }, $IterNode_compile_block_arg$3.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$extract_underscore_args', $IterNode_extract_underscore_args$4 = function $$extract_underscore_args() {
-          var $$5, self = this, valid_args = nil, caught_blank_argument = nil;
+        $def(self, '$extract_underscore_args', function $$extract_underscore_args() {
+          var self = this, valid_args = nil, caught_blank_argument = nil;
 
           
           valid_args = [];
           caught_blank_argument = false;
-          $send(self.$args().$children(), 'each', [], ($$5 = function(arg){var self = $$5.$$s == null ? this : $$5.$$s, arg_name = nil;
+          $send(self.$args().$children(), 'each', [], function $$2(arg){var arg_name = nil;
 
             
             
-            if (arg == null) {
-              arg = nil;
-            };
+            if (arg == null) arg = nil;;
             arg_name = arg.$children().$first();
-            if (arg_name['$==']("_")) {
+            if ($eqeq(arg_name, "_")) {
               if ($truthy(caught_blank_argument)) {
                 return nil
               } else {
@@ -36627,78 +33255,60 @@ Opal.modules["opal/nodes/iter"] = function(Opal) {
               }
             } else {
               return valid_args['$<<'](arg)
-            };}, $$5.$$s = self, $$5.$$arity = 1, $$5));
+            };}, 1);
           return (self.sexp = self.sexp.$updated(nil, [self.$args().$updated(nil, valid_args), self.$body()]));
-        }, $IterNode_extract_underscore_args$4.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$returned_body', $IterNode_returned_body$6 = function $$returned_body() {
+        $def(self, '$returned_body', function $$returned_body() {
           var self = this, $ret_or_1 = nil;
 
-          return self.$compiler().$returns((function() {if ($truthy(($ret_or_1 = self.$body()))) {
-            return $ret_or_1
-          } else {
-            return self.$s("nil")
-          }; return nil; })())
-        }, $IterNode_returned_body$6.$$arity = 0);
+          return self.$compiler().$returns(($truthy(($ret_or_1 = self.$body())) ? ($ret_or_1) : (self.$s("nil"))))
+        }, 0);
         
-        Opal.def(self, '$has_top_level_mlhs_arg?', $IterNode_has_top_level_mlhs_arg$ques$7 = function() {
-          var $$8, self = this;
-
-          return $send(self.$original_args().$children(), 'any?', [], ($$8 = function(arg){var self = $$8.$$s == null ? this : $$8.$$s;
+        $def(self, '$has_top_level_mlhs_arg?', function $IterNode_has_top_level_mlhs_arg$ques$3() {
+          var self = this;
 
+          return $send(self.$original_args().$children(), 'any?', [], function $$4(arg){
             
             
-            if (arg == null) {
-              arg = nil;
-            };
-            return arg.$type()['$==']("mlhs");}, $$8.$$s = self, $$8.$$arity = 1, $$8))
-        }, $IterNode_has_top_level_mlhs_arg$ques$7.$$arity = 0);
+            if (arg == null) arg = nil;;
+            return arg.$type()['$==']("mlhs");}, 1)
+        }, 0);
         
-        Opal.def(self, '$has_trailing_comma_in_args?', $IterNode_has_trailing_comma_in_args$ques$9 = function() {
-          var self = this, $ret_or_2 = nil, args_source = nil;
+        $def(self, '$has_trailing_comma_in_args?', function $IterNode_has_trailing_comma_in_args$ques$5() {
+          var self = this, args_source = nil;
 
-          if ($truthy((function() {if ($truthy(($ret_or_2 = self.$original_args().$loc()))) {
-            return self.$original_args().$loc().$expression()
-          } else {
-            return $ret_or_2
-          }; return nil; })())) {
+          if (($truthy(self.$original_args().$loc()) && ($truthy(self.$original_args().$loc().$expression())))) {
             
             args_source = self.$original_args().$loc().$expression().$source();
             return args_source.$match(/,\s*\|/);
           } else {
             return nil
           }
-        }, $IterNode_has_trailing_comma_in_args$ques$9.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$arity_check_node', $IterNode_arity_check_node$10 = function $$arity_check_node() {
+        $def(self, '$arity_check_node', function $$arity_check_node() {
           var self = this;
 
           return self.$s("iter_arity_check", self.$original_args())
-        }, $IterNode_arity_check_node$10.$$arity = 0);
-        return (Opal.def(self, '$contains_break?', $IterNode_contains_break$ques$11 = function() {
+        }, 0);
+        return $def(self, '$contains_break?', function $IterNode_contains_break$ques$6() {
           var self = this, finder = nil;
 
           
-          finder = $$$($$$($$($nesting, 'Opal'), 'Rewriters'), 'BreakFinder').$new();
+          finder = $$$($$$($$('Opal'), 'Rewriters'), 'BreakFinder').$new();
           finder.$process(self.sexp);
           return finder['$found_break?']();
-        }, $IterNode_contains_break$ques$11.$$arity = 0), nil) && 'contains_break?';
-      })($nesting[0], $$($nesting, 'NodeWithArgs'), $nesting)
+        }, 0);
+      })($nesting[0], $$('NodeWithArgs'), $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/def"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy;
-
-  Opal.add_stubs(['$require', '$handle', '$children', '$in_scope', '$mid', '$mid=', '$scope', '$-', '$==', '$type', '$defs=', '$identify!', '$identity', '$block_name=', '$process', '$inline_args', '$stmt', '$returns', '$compiler', '$stmts', '$compile_block_arg', '$add_temp', '$compile_arity_check', '$uses_zuper', '$prepare_super', '$unshift', '$current_indent', '$to_vars', '$line', '$catch_return', '$push', '$valid_name?', '$arity', '$arity_check?', '$parameters_code', '$parse_comments?', '$comments_code', '$enable_source_location?', '$source_location', '$wrap_with_definition', '$wrap', '$expr?', '$+', '$join', '$map', '$comments', '$inspect', '$text', '$add_local']);
+Opal.modules["opal/nodes/def"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $eqeq = Opal.eqeq, $truthy = Opal.truthy, $rb_gt = Opal.rb_gt, $def = Opal.def, $rb_plus = Opal.rb_plus;
+
+  Opal.add_stubs('require,handle,children,in_scope,mid,mid=,scope,-,==,type,defs=,identify!,identity,block_name=,process,inline_args,stmt,returns,compiler,stmts,compile_block_arg,add_temp,compile_arity_check,unshift,current_indent,to_vars,line,catch_return,push,await_encountered,<<,arity,arity_check?,parameters_code,parse_comments?,comments_code,enable_source_location?,source_location,length,>,join,wrap_with_definition,nesting,relative_access,helper,wrap,self,expr?,+,map,comments,inspect,text');
   
   self.$require("opal/nodes/node_with_args");
   return (function($base, $parent_nesting) {
@@ -36709,50 +33319,53 @@ Opal.modules["opal/nodes/def"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'DefNode');
 
-        var $nesting = [self].concat($parent_nesting), $DefNode_compile$1, $DefNode_wrap_with_definition$3, $DefNode_comments_code$4, $DefNode_prepare_super$6;
+        var $proto = self.$$prototype;
 
+        $proto.define_nesting = $proto.define_relative_access = nil;
         
         self.$handle("def");
         self.$children("mid", "inline_args", "stmts");
         
-        Opal.def(self, '$compile', $DefNode_compile$1 = function $$compile() {
-          var $$2, self = this, inline_params = nil, scope_name = nil, function_name = nil;
+        $def(self, '$compile', function $$compile() {
+          var self = this, inline_params = nil, scope_name = nil, blockopts = nil;
 
           
           inline_params = nil;
           scope_name = nil;
-          $send(self, 'in_scope', [], ($$2 = function(){var self = $$2.$$s == null ? this : $$2.$$s, $writer = nil, stmt_code = nil;
+          $send(self, 'in_scope', [], function $$1(){var self = $$1.$$s == null ? this : $$1.$$s, $writer = nil, stmt_code = nil;
             if (self.sexp == null) self.sexp = nil;
+            if (self.define_self == null) self.define_self = nil;
 
             
             
             $writer = [self.$mid()];
-            $send(self.$scope(), 'mid=', Opal.to_a($writer));
+            $send(self.$scope(), 'mid=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
-            if (self.sexp.$type()['$==']("defs")) {
+            if ($eqeq(self.sexp.$type(), "defs")) {
               
               $writer = [true];
-              $send(self.$scope(), 'defs=', Opal.to_a($writer));
-              $writer[$rb_minus($writer["length"], 1)];};
+              $send(self.$scope(), 'defs=', $to_a($writer));
+              $writer[$rb_minus($writer["length"], 1)];
+            };
             self.$scope()['$identify!']();
             scope_name = self.$scope().$identity();
             
             $writer = ["$yield"];
-            $send(self.$scope(), 'block_name=', Opal.to_a($writer));
+            $send(self.$scope(), 'block_name=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
             inline_params = self.$process(self.$inline_args());
             stmt_code = self.$stmt(self.$compiler().$returns(self.$stmts()));
             self.$compile_block_arg();
-            self.$add_temp("self = this");
+            if ($truthy(self.define_self)) {
+              self.$add_temp("self = this")
+            };
             self.$compile_arity_check();
-            if ($truthy(self.$scope().$uses_zuper())) {
-              self.$prepare_super()};
-            self.$unshift("" + "\n" + (self.$current_indent()), self.$scope().$to_vars());
+            self.$unshift("\n" + (self.$current_indent()), self.$scope().$to_vars());
             self.$line(stmt_code);
             if ($truthy(self.$scope().$catch_return())) {
               
@@ -36761,74 +33374,71 @@ Opal.modules["opal/nodes/def"] = function(Opal) {
               return self.$push(" throw $returner; }");
             } else {
               return nil
-            };}, $$2.$$s = self, $$2.$$arity = 0, $$2));
-          function_name = (function() {if ($truthy(self['$valid_name?'](self.$mid()))) {
-            return "" + " $$" + (self.$mid())
-          } else {
-            return ""
-          }; return nil; })();
+            };}, {$$arity: 0, $$s: self});
           self.$unshift(") {");
           self.$unshift(inline_params);
-          self.$unshift("" + "function" + (function_name) + "(");
-          if ($truthy(scope_name)) {
-            self.$unshift("" + (scope_name) + " = ")};
+          self.$unshift("function " + (scope_name) + "(");
+          if ($truthy(self.$await_encountered())) {
+            self.$unshift("async ")
+          };
           self.$line("}");
-          self.$push("" + ", " + (scope_name) + ".$$arity = " + (self.$arity()));
+          blockopts = [];
+          blockopts['$<<']("$$arity: " + (self.$arity()));
           if ($truthy(self.$compiler()['$arity_check?']())) {
-            self.$push("" + ", " + (scope_name) + ".$$parameters = " + (self.$parameters_code()))};
+            blockopts['$<<']("$$parameters: " + (self.$parameters_code()))
+          };
           if ($truthy(self.$compiler()['$parse_comments?']())) {
-            self.$push("" + ", " + (scope_name) + ".$$comments = " + (self.$comments_code()))};
+            blockopts['$<<']("$$comments: " + (self.$comments_code()))
+          };
           if ($truthy(self.$compiler()['$enable_source_location?']())) {
-            self.$push("" + ", " + (scope_name) + ".$$source_location = " + (self.$source_location()))};
-          return self.$wrap_with_definition();
-        }, $DefNode_compile$1.$$arity = 0);
+            blockopts['$<<']("$$source_location: " + (self.$source_location()))
+          };
+          if ($eqeq(blockopts.$length(), 1)) {
+            self.$push(", " + (self.$arity()))
+          } else if ($truthy($rb_gt(blockopts.$length(), 1))) {
+            self.$push(", {", blockopts.$join(", "), "}")
+          };
+          self.$wrap_with_definition();
+          if ($truthy(self.define_nesting)) {
+            self.$scope().$nesting()
+          };
+          if ($truthy(self.define_relative_access)) {
+            return self.$scope().$relative_access()
+          } else {
+            return nil
+          };
+        }, 0);
         
-        Opal.def(self, '$wrap_with_definition', $DefNode_wrap_with_definition$3 = function $$wrap_with_definition() {
+        $def(self, '$wrap_with_definition', function $$wrap_with_definition() {
           var self = this;
 
           
-          self.$wrap("" + "Opal.def(self, '$" + (self.$mid()) + "', ", ")");
+          self.$helper("def");
+          self.$wrap("$def(" + (self.$scope().$self()) + ", '$" + (self.$mid()) + "', ", ")");
           if ($truthy(self['$expr?']())) {
-            return self.$wrap("(", "" + ", nil) && '" + (self.$mid()) + "'")
+            return nil
           } else {
-            return self.$unshift("" + "\n" + (self.$current_indent()))
+            return self.$unshift("\n" + (self.$current_indent()))
           };
-        }, $DefNode_wrap_with_definition$3.$$arity = 0);
-        
-        Opal.def(self, '$comments_code', $DefNode_comments_code$4 = function $$comments_code() {
-          var $$5, self = this;
-
-          return $rb_plus($rb_plus("[", $send(self.$comments(), 'map', [], ($$5 = function(comment){var self = $$5.$$s == null ? this : $$5.$$s;
+        }, 0);
+        return $def(self, '$comments_code', function $$comments_code() {
+          var self = this;
 
+          return $rb_plus($rb_plus("[", $send(self.$comments(), 'map', [], function $$2(comment){
             
             
-            if (comment == null) {
-              comment = nil;
-            };
-            return comment.$text().$inspect();}, $$5.$$s = self, $$5.$$arity = 1, $$5)).$join(", ")), "]")
-        }, $DefNode_comments_code$4.$$arity = 0);
-        return (Opal.def(self, '$prepare_super', $DefNode_prepare_super$6 = function $$prepare_super() {
-          var self = this;
-
-          
-          self.$add_local("$zuper");
-          self.$add_local("$zuper_i");
-          self.$add_local("$zuper_ii");
-          self.$line("// Prepare super implicit arguments");
-          self.$line("for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {");
-          self.$line("  $zuper[$zuper_i] = arguments[$zuper_i];");
-          return self.$line("}");
-        }, $DefNode_prepare_super$6.$$arity = 0), nil) && 'prepare_super';
-      })($nesting[0], $$($nesting, 'NodeWithArgs'), $nesting)
+            if (comment == null) comment = nil;;
+            return comment.$text().$inspect();}, 1).$join(", ")), "]")
+        }, 0);
+      })($nesting[0], $$('NodeWithArgs'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/defs"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy;
+Opal.modules["opal/nodes/defs"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$unshift', '$expr', '$recvr', '$mid', '$push', '$expr?', '$wrap']);
+  Opal.add_stubs('require,handle,children,helper,unshift,expr,recvr,mid,push');
   
   self.$require("opal/nodes/def");
   return (function($base, $parent_nesting) {
@@ -36839,38 +33449,32 @@ Opal.modules["opal/nodes/defs"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'DefsNode');
 
-        var $nesting = [self].concat($parent_nesting), $DefsNode_wrap_with_definition$1;
-
+        
         
         self.$handle("defs");
         self.$children("recvr", "mid", "inline_args", "stmts");
-        return (Opal.def(self, '$wrap_with_definition', $DefsNode_wrap_with_definition$1 = function $$wrap_with_definition() {
+        return $def(self, '$wrap_with_definition', function $$wrap_with_definition() {
           var self = this;
 
           
-          self.$unshift("Opal.defs(", self.$expr(self.$recvr()), "" + ", '$" + (self.$mid()) + "', ");
-          self.$push(")");
-          if ($truthy(self['$expr?']())) {
-            return self.$wrap("(", "" + ", nil) && '" + (self.$mid()) + "'")
-          } else {
-            return nil
-          };
-        }, $DefsNode_wrap_with_definition$1.$$arity = 0), nil) && 'wrap_with_definition';
-      })($nesting[0], $$($nesting, 'DefNode'), $nesting)
+          self.$helper("defs");
+          self.$unshift("$defs(", self.$expr(self.$recvr()), ", '$" + (self.$mid()) + "', ");
+          return self.$push(")");
+        }, 0);
+      })($nesting[0], $$('DefNode'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/if"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send;
+Opal.modules["opal/nodes/if"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $eqeq = Opal.eqeq, $def = Opal.def, $not = Opal.not, $send = Opal.send, $eqeqeq = Opal.eqeqeq;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$truthy', '$falsy', '$push', '$js_truthy', '$test', '$indent', '$line', '$stmt', '$==', '$type', '$needs_wrapper?', '$wrap', '$returns', '$compiler', '$true_body', '$s', '$false_body', '$expr?', '$recv?', '$helper', '$new_temp', '$top_scope', '$excl', '$from', '$to']);
+  Opal.add_stubs('require,handle,children,should_compile_as_simple_expression?,==,true_body,s,compile_with_binary_or,false_body,compile_with_binary_and,compile_with_ternary,compile_with_if,truthy,falsy,!,push,js_truthy,test,indent,line,stmt,type,expects_expression?,await_encountered,scope,wrap,returnify,returns,compiler,expr?,recv?,simple?,expr,[],meta,sexp,===,single_line?,strip_empty_children,all?,helper,new_temp,top_scope,excl,from,to');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -36881,152 +33485,244 @@ Opal.modules["opal/nodes/if"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
       (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'IfNode');
 
-        var $nesting = [self].concat($parent_nesting), $IfNode_compile$1, $IfNode_truthy$4, $IfNode_falsy$5, $IfNode_needs_wrapper$ques$6;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
         
         self.$handle("if");
         self.$children("test", "true_body", "false_body");
         
-        Opal.def(self, '$compile', $IfNode_compile$1 = function $$compile() {
-          var $$2, $$3, self = this, truthy = nil, falsy = nil;
+        $def(self, '$compile', function $$compile() {
+          var self = this;
+
+          if ($truthy(self['$should_compile_as_simple_expression?']())) {
+            if ($eqeq(self.$true_body(), self.$s("true"))) {
+              return self.$compile_with_binary_or()
+            } else if ($eqeq(self.$false_body(), self.$s("false"))) {
+              return self.$compile_with_binary_and()
+            } else {
+              return self.$compile_with_ternary()
+            }
+          } else {
+            return self.$compile_with_if()
+          }
+        }, 0);
+        
+        $def(self, '$compile_with_if', function $$compile_with_if() {
+          var $a, self = this, truthy = nil, falsy = nil;
 
           
           truthy = self.$truthy();
           falsy = self.$falsy();
-          self.$push("if (", self.$js_truthy(self.$test()), ") {");
+          if (($truthy(falsy) && ($not(truthy)))) {
+            
+            self.$push("if (!", self.$js_truthy(self.$test()), ") {");
+            $a = [truthy, falsy], (falsy = $a[0]), (truthy = $a[1]), $a;
+          } else {
+            self.$push("if (", self.$js_truthy(self.$test()), ") {")
+          };
           if ($truthy(truthy)) {
-            $send(self, 'indent', [], ($$2 = function(){var self = $$2.$$s == null ? this : $$2.$$s;
+            $send(self, 'indent', [], function $$1(){var self = $$1.$$s == null ? this : $$1.$$s;
 
-              return self.$line(self.$stmt(truthy))}, $$2.$$s = self, $$2.$$arity = 0, $$2))};
+              return self.$line(self.$stmt(truthy))}, {$$arity: 0, $$s: self})
+          };
           if ($truthy(falsy)) {
-            if (falsy.$type()['$==']("if")) {
+            if ($eqeq(falsy.$type(), "if")) {
               self.$line("} else ", self.$stmt(falsy))
             } else {
               
               self.$line("} else {");
-              $send(self, 'indent', [], ($$3 = function(){var self = $$3.$$s == null ? this : $$3.$$s;
+              $send(self, 'indent', [], function $$2(){var self = $$2.$$s == null ? this : $$2.$$s;
 
-                return self.$line(self.$stmt(falsy))}, $$3.$$s = self, $$3.$$arity = 0, $$3));
+                return self.$line(self.$stmt(falsy))}, {$$arity: 0, $$s: self});
               self.$line("}");
             }
           } else {
-            self.$push("}")
+            
+            self.$line("}");
+            if ($truthy(self['$expects_expression?']())) {
+              self.$line("return nil;")
+            };
           };
-          if ($truthy(self['$needs_wrapper?']())) {
-            return self.$wrap("(function() {", "; return nil; })()")
+          if ($truthy(self['$expects_expression?']())) {
+            if ($truthy(self.$scope().$await_encountered())) {
+              return self.$wrap("(await (async function() {", "})())")
+            } else {
+              return self.$wrap("(function() {", "})()")
+            }
           } else {
             return nil
           };
-        }, $IfNode_compile$1.$$arity = 0);
+        }, 0);
+        
+        $def(self, '$truthy', function $$truthy() {
+          var self = this;
+
+          return self.$returnify(self.$true_body())
+        }, 0);
+        
+        $def(self, '$falsy', function $$falsy() {
+          var self = this;
+
+          return self.$returnify(self.$false_body())
+        }, 0);
+        
+        $def(self, '$returnify', function $$returnify(body) {
+          var self = this;
+
+          if (($truthy(self['$expects_expression?']()) && ($truthy(body)))) {
+            return self.$compiler().$returns(body)
+          } else {
+            return body
+          }
+        }, 1);
         
-        Opal.def(self, '$truthy', $IfNode_truthy$4 = function $$truthy() {
+        $def(self, '$expects_expression?', function $IfNode_expects_expression$ques$3() {
           var self = this, $ret_or_1 = nil;
 
-          if ($truthy(self['$needs_wrapper?']())) {
-            return self.$compiler().$returns((function() {if ($truthy(($ret_or_1 = self.$true_body()))) {
-              return $ret_or_1
-            } else {
-              return self.$s("nil")
-            }; return nil; })())
+          if ($truthy(($ret_or_1 = self['$expr?']()))) {
+            return $ret_or_1
           } else {
-            return self.$true_body()
+            return self['$recv?']()
           }
-        }, $IfNode_truthy$4.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$falsy', $IfNode_falsy$5 = function $$falsy() {
-          var self = this, $ret_or_2 = nil;
+        $def(self, '$should_compile_as_simple_expression?', function $IfNode_should_compile_as_simple_expression$ques$4() {
+          var self = this, $ret_or_1 = nil, $ret_or_2 = nil;
 
-          if ($truthy(self['$needs_wrapper?']())) {
-            return self.$compiler().$returns((function() {if ($truthy(($ret_or_2 = self.$false_body()))) {
-              return $ret_or_2
-            } else {
-              return self.$s("nil")
-            }; return nil; })())
+          if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = self['$expects_expression?']())) ? (self['$simple?'](self.$true_body())) : ($ret_or_2))))) {
+            return self['$simple?'](self.$false_body())
           } else {
-            return self.$false_body()
+            return $ret_or_1
           }
-        }, $IfNode_falsy$5.$$arity = 0);
-        return (Opal.def(self, '$needs_wrapper?', $IfNode_needs_wrapper$ques$6 = function() {
-          var self = this, $ret_or_3 = nil;
+        }, 0);
+        
+        $def(self, '$compile_with_ternary', function $$compile_with_ternary() {
+          var self = this, truthy = nil, falsy = nil, $ret_or_1 = nil;
 
-          if ($truthy(($ret_or_3 = self['$expr?']()))) {
-            return $ret_or_3
+          
+          truthy = self.$true_body();
+          falsy = self.$false_body();
+          self.$push("(");
+          self.$push(self.$js_truthy(self.$test()), " ? ");
+          self.$push("(", self.$expr(($truthy(($ret_or_1 = truthy)) ? ($ret_or_1) : (self.$s("nil")))), ") : ");
+          if (($not(falsy) || ($eqeq(falsy.$type(), "if")))) {
+            self.$push(self.$expr(($truthy(($ret_or_1 = falsy)) ? ($ret_or_1) : (self.$s("nil")))))
           } else {
-            return self['$recv?']()
+            self.$push("(", self.$expr(($truthy(($ret_or_1 = falsy)) ? ($ret_or_1) : (self.$s("nil")))), ")")
+          };
+          return self.$push(")");
+        }, 0);
+        
+        $def(self, '$compile_with_binary_and', function $$compile_with_binary_and() {
+          var self = this, truthy = nil, $ret_or_1 = nil;
+
+          
+          if ($truthy(self.$sexp().$meta()['$[]']("do_js_truthy_on_true_body"))) {
+            truthy = self.$js_truthy(($truthy(($ret_or_1 = self.$true_body())) ? ($ret_or_1) : (self.$s("nil"))))
+          } else {
+            truthy = self.$expr(($truthy(($ret_or_1 = self.$true_body())) ? ($ret_or_1) : (self.$s("nil"))))
+          };
+          self.$push("(");
+          self.$push(self.$js_truthy(self.$test()), " && ");
+          self.$push("(", truthy, ")");
+          return self.$push(")");
+        }, 0);
+        
+        $def(self, '$compile_with_binary_or', function $$compile_with_binary_or() {
+          var self = this, falsy = nil, $ret_or_1 = nil;
+
+          
+          if ($truthy(self.$sexp().$meta()['$[]']("do_js_truthy_on_false_body"))) {
+            falsy = self.$js_truthy(($truthy(($ret_or_1 = self.$false_body())) ? ($ret_or_1) : (self.$s("nil"))))
+          } else {
+            falsy = self.$expr(($truthy(($ret_or_1 = self.$false_body())) ? ($ret_or_1) : (self.$s("nil"))))
+          };
+          self.$push("(");
+          self.$push(self.$js_truthy(self.$test()), " || ");
+          self.$push("(", falsy, ")");
+          return self.$push(")");
+        }, 0);
+        return $def(self, '$simple?', function $IfNode_simple$ques$5(body) {
+          var self = this, $ret_or_1 = nil, $ret_or_2 = nil;
+
+          if ($eqeqeq($$$($$('AST'), 'Node'), ($ret_or_1 = body))) {
+            if (($eqeqeq("return", ($ret_or_2 = body.$type())) || (($eqeqeq("js_return", $ret_or_2) || (($eqeqeq("break", $ret_or_2) || (($eqeqeq("next", $ret_or_2) || (($eqeqeq("redo", $ret_or_2) || ($eqeqeq("retry", $ret_or_2)))))))))))) {
+              return false
+            } else if ($eqeqeq("xstr", $ret_or_2)) {
+              return $$('XStringNode')['$single_line?']($$('XStringNode').$strip_empty_children(body.$children()))
+            } else {
+              return $send(body.$children(), 'all?', [], function $$6(i){var self = $$6.$$s == null ? this : $$6.$$s;
+
+                
+                
+                if (i == null) i = nil;;
+                return self['$simple?'](i);}, {$$arity: 1, $$s: self})
+            }
+          } else {
+            return true
           }
-        }, $IfNode_needs_wrapper$ques$6.$$arity = 0), nil) && 'needs_wrapper?';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 1);
+      })($nesting[0], $$('Base'), $nesting);
+      (function($base, $super) {
         var self = $klass($base, $super, 'IFlipFlop');
 
-        var $nesting = [self].concat($parent_nesting), $IFlipFlop_excl$7, $IFlipFlop_compile$8;
-
+        
         
         self.$handle("iflipflop");
         self.$children("from", "to");
         
-        Opal.def(self, '$excl', $IFlipFlop_excl$7 = function $$excl() {
-          var self = this;
-
+        $def(self, '$excl', function $$excl() {
+          
           return ""
-        }, $IFlipFlop_excl$7.$$arity = 0);
-        return (Opal.def(self, '$compile', $IFlipFlop_compile$8 = function $$compile() {
+        }, 0);
+        return $def(self, '$compile', function $$compile() {
           var self = this, fun_name = nil, ff = nil;
 
           
           self.$helper("truthy");
           fun_name = self.$top_scope().$new_temp();
           ff = "" + (fun_name) + ".$$ff";
-          self.$push("" + "(typeof " + (fun_name) + " === 'undefined' ? (" + (fun_name) + " = function(from, to){");
-          self.$push("" + "  if (typeof " + (ff) + " === 'undefined') " + (ff) + " = false;");
-          self.$push("" + "  var retval = " + (ff) + ";");
-          self.$push("" + "  if (!" + (ff) + ") {");
-          self.$push("" + "    " + (ff) + " = retval = $truthy(from());");
+          self.$push("(typeof " + (fun_name) + " === 'undefined' ? (" + (fun_name) + " = function(from, to){");
+          self.$push("  if (typeof " + (ff) + " === 'undefined') " + (ff) + " = false;");
+          self.$push("  var retval = " + (ff) + ";");
+          self.$push("  if (!" + (ff) + ") {");
+          self.$push("    " + (ff) + " = retval = $truthy(from());");
           self.$push("  }");
-          self.$push("" + "  " + (self.$excl()) + "if (" + (ff) + ") {");
-          self.$push("" + "    if ($truthy(to())) " + (ff) + " = false;");
+          self.$push("  " + (self.$excl()) + "if (" + (ff) + ") {");
+          self.$push("    if ($truthy(to())) " + (ff) + " = false;");
           self.$push("  }");
           self.$push("  return retval;");
-          self.$push("" + "}) : " + (fun_name) + ")(");
+          self.$push("}) : " + (fun_name) + ")(");
           self.$push("  function() { ", self.$stmt(self.$compiler().$returns(self.$from())), " },");
           self.$push("  function() { ", self.$stmt(self.$compiler().$returns(self.$to())), " }");
           return self.$push(")");
-        }, $IFlipFlop_compile$8.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      return (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('Base'));
+      return (function($base, $super) {
         var self = $klass($base, $super, 'EFlipFlop');
 
-        var $nesting = [self].concat($parent_nesting), $EFlipFlop_excl$9;
-
+        
         
         self.$handle("eflipflop");
-        return (Opal.def(self, '$excl', $EFlipFlop_excl$9 = function $$excl() {
-          var self = this;
-
+        return $def(self, '$excl', function $$excl() {
+          
           return "else "
-        }, $EFlipFlop_excl$9.$$arity = 0), nil) && 'excl';
-      })($nesting[0], $$($nesting, 'IFlipFlop'), $nesting);
+        }, 0);
+      })($nesting[0], $$('IFlipFlop'));
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/logic"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send;
-
-  Opal.add_stubs(['$require', '$handle', '$in_while?', '$push', '$iter?', '$scope', '$expr_or_nil', '$value', '$error', '$size', '$children', '$===', '$s', '$first', '$compile_while', '$compile_iter', '$[]', '$while_loop', '$stmt?', '$line', '$break_val', '$nil?', '$expr', '$[]=', '$-', '$helper', '$identity', '$==', '$empty_splat?', '$recv', '$>', '$!', '$lambda?', '$find_parent_def', '$expr?', '$def?', '$return_in_iter?', '$return_expr_in_def?', '$scope_to_catch_return', '$catch_return=', '$return_val', '$to_s']);
+Opal.modules["opal/nodes/logic"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $def = Opal.def, $eqeqeq = Opal.eqeqeq, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $rb_gt = Opal.rb_gt, $not = Opal.not;
+
+  Opal.add_stubs('require,handle,in_while?,push,iter?,scope,expr_or_nil,value,error,===,size,children,s,first,compile_while,compile_iter,[],while_loop,stmt?,line,break_val,nil?,expr,[]=,-,helper,identity,==,empty_splat?,recv,>,find_parent_def,!,lambda?,def?,expr?,return_in_iter?,return_expr_in_def?,scope_to_catch_return,catch_return=,return_val,to_s');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -37037,18 +33733,17 @@ Opal.modules["opal/nodes/logic"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
-      (function($base, $super, $parent_nesting) {
+      (function($base, $super) {
         var self = $klass($base, $super, 'NextNode');
 
-        var $nesting = [self].concat($parent_nesting), $NextNode_compile$1, $NextNode_value$2;
-
+        
         
         self.$handle("next");
         
-        Opal.def(self, '$compile', $NextNode_compile$1 = function $$compile() {
+        $def(self, '$compile', function $$compile() {
           var self = this;
 
           if ($truthy(self['$in_while?']())) {
@@ -37058,26 +33753,28 @@ Opal.modules["opal/nodes/logic"] = function(Opal) {
           } else {
             return self.$error("Invalid next")
           }
-        }, $NextNode_compile$1.$$arity = 0);
-        return (Opal.def(self, '$value', $NextNode_value$2 = function $$value() {
-          var self = this, $case = nil;
-
-          return (function() {$case = self.$children().$size();
-          if ((0)['$===']($case)) {return self.$s("nil")}
-          else if ((1)['$===']($case)) {return self.$children().$first()}
-          else {return $send(self, 's', ["array"].concat(Opal.to_a(self.$children())))}})()
-        }, $NextNode_value$2.$$arity = 0), nil) && 'value';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
-        var self = $klass($base, $super, 'BreakNode');
+        }, 0);
+        return $def(self, '$value', function $$value() {
+          var self = this, $ret_or_1 = nil;
 
-        var $nesting = [self].concat($parent_nesting), $BreakNode_compile$3, $BreakNode_compile_while$4, $BreakNode_compile_iter$5, $BreakNode_break_val$6;
+          if ($eqeqeq(0, ($ret_or_1 = self.$children().$size()))) {
+            return self.$s("nil")
+          } else if ($eqeqeq(1, $ret_or_1)) {
+            return self.$children().$first()
+          } else {
+            return $send(self, 's', ["array"].concat($to_a(self.$children())))
+          }
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
+        var self = $klass($base, $super, 'BreakNode');
 
         
+        
         self.$handle("break");
         self.$children("value");
         
-        Opal.def(self, '$compile', $BreakNode_compile$3 = function $$compile() {
+        $def(self, '$compile', function $$compile() {
           var self = this;
 
           if ($truthy(self['$in_while?']())) {
@@ -37087,9 +33784,9 @@ Opal.modules["opal/nodes/logic"] = function(Opal) {
           } else {
             return self.$error("void value expression: cannot use break outside of iter/while")
           }
-        }, $BreakNode_compile$3.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_while', $BreakNode_compile_while$4 = function $$compile_while() {
+        $def(self, '$compile_while', function $$compile_while() {
           var self = this;
 
           if ($truthy(self.$while_loop()['$[]']("closure"))) {
@@ -37097,19 +33794,18 @@ Opal.modules["opal/nodes/logic"] = function(Opal) {
           } else {
             return self.$push("break;")
           }
-        }, $BreakNode_compile_while$4.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_iter', $BreakNode_compile_iter$5 = function $$compile_iter() {
+        $def(self, '$compile_iter', function $$compile_iter() {
           var self = this;
 
           
-          if ($truthy(self['$stmt?']())) {
-          } else {
+          if (!$truthy(self['$stmt?']())) {
             self.$error("break must be used as a statement")
           };
           return self.$line("Opal.brk(", self.$break_val(), ", $brk)");
-        }, $BreakNode_compile_iter$5.$$arity = 0);
-        return (Opal.def(self, '$break_val', $BreakNode_break_val$6 = function $$break_val() {
+        }, 0);
+        return $def(self, '$break_val', function $$break_val() {
           var self = this;
 
           if ($truthy(self.$value()['$nil?']())) {
@@ -37117,17 +33813,16 @@ Opal.modules["opal/nodes/logic"] = function(Opal) {
           } else {
             return self.$expr(self.$value())
           }
-        }, $BreakNode_break_val$6.$$arity = 0), nil) && 'break_val';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'RedoNode');
 
-        var $nesting = [self].concat($parent_nesting), $RedoNode_compile$7, $RedoNode_compile_while$8, $RedoNode_compile_iter$9;
-
+        
         
         self.$handle("redo");
         
-        Opal.def(self, '$compile', $RedoNode_compile$7 = function $$compile() {
+        $def(self, '$compile', function $$compile() {
           var self = this;
 
           if ($truthy(self['$in_while?']())) {
@@ -37137,125 +33832,108 @@ Opal.modules["opal/nodes/logic"] = function(Opal) {
           } else {
             return self.$push("REDO()")
           }
-        }, $RedoNode_compile$7.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_while', $RedoNode_compile_while$8 = function $$compile_while() {
+        $def(self, '$compile_while', function $$compile_while() {
           var self = this, $writer = nil;
 
           
           
           $writer = ["use_redo", true];
-          $send(self.$while_loop(), '[]=', Opal.to_a($writer));
+          $send(self.$while_loop(), '[]=', $to_a($writer));
           $writer[$rb_minus($writer["length"], 1)];;
           return self.$push("" + (self.$while_loop()['$[]']("redo_var")) + " = true; continue;");
-        }, $RedoNode_compile_while$8.$$arity = 0);
-        return (Opal.def(self, '$compile_iter', $RedoNode_compile_iter$9 = function $$compile_iter() {
+        }, 0);
+        return $def(self, '$compile_iter', function $$compile_iter() {
           var self = this;
 
           
           self.$helper("slice");
-          return self.$push("" + "return " + (self.$scope().$identity()) + ".apply(null, $slice.call(arguments))");
-        }, $RedoNode_compile_iter$9.$$arity = 0), nil) && 'compile_iter';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+          return self.$push("return " + (self.$scope().$identity()) + ".apply(null, $slice.call(arguments))");
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'SplatNode');
 
-        var $nesting = [self].concat($parent_nesting), $SplatNode_empty_splat$ques$10, $SplatNode_compile$11;
-
+        
         
         self.$handle("splat");
         self.$children("value");
         
-        Opal.def(self, '$empty_splat?', $SplatNode_empty_splat$ques$10 = function() {
+        $def(self, '$empty_splat?', function $SplatNode_empty_splat$ques$1() {
           var self = this;
 
           return self.$value()['$=='](self.$s("array"))
-        }, $SplatNode_empty_splat$ques$10.$$arity = 0);
-        return (Opal.def(self, '$compile', $SplatNode_compile$11 = function $$compile() {
+        }, 0);
+        return $def(self, '$compile', function $$compile() {
           var self = this;
 
           if ($truthy(self['$empty_splat?']())) {
             return self.$push("[]")
           } else {
-            return self.$push("Opal.to_a(", self.$recv(self.$value()), ")")
+            
+            self.$helper("to_a");
+            return self.$push("$to_a(", self.$recv(self.$value()), ")");
           }
-        }, $SplatNode_compile$11.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'ReturnNode');
 
-        var $nesting = [self].concat($parent_nesting), $ReturnNode_return_val$12, $ReturnNode_return_in_iter$ques$13, $ReturnNode_return_expr_in_def$ques$14, $ReturnNode_scope_to_catch_return$15, $ReturnNode_compile$16;
-
+        
         
         self.$handle("return");
         self.$children("value");
         
-        Opal.def(self, '$return_val', $ReturnNode_return_val$12 = function $$return_val() {
+        $def(self, '$return_val', function $$return_val() {
           var self = this;
 
           if ($truthy(self.$value()['$nil?']())) {
             return self.$expr(self.$s("nil"))
           } else if ($truthy($rb_gt(self.$children().$size(), 1))) {
-            return self.$expr($send(self, 's', ["array"].concat(Opal.to_a(self.$children()))))
+            return self.$expr($send(self, 's', ["array"].concat($to_a(self.$children()))))
           } else {
             return self.$expr(self.$value())
           }
-        }, $ReturnNode_return_val$12.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$return_in_iter?', $ReturnNode_return_in_iter$ques$13 = function() {
-          var self = this, $ret_or_1 = nil, $ret_or_2 = nil, parent_def = nil;
+        $def(self, '$return_in_iter?', function $ReturnNode_return_in_iter$ques$2() {
+          var self = this, parent_def = nil;
 
-          if ($truthy((function() {if ($truthy(($ret_or_1 = (function() {if ($truthy(($ret_or_2 = self.$scope()['$iter?']()))) {
-            return self.$scope()['$lambda?']()['$!']()
-          } else {
-            return $ret_or_2
-          }; return nil; })()))) {
-            return (parent_def = self.$scope().$find_parent_def())
-          } else {
-            return $ret_or_1
-          }; return nil; })())) {
+          if ((($truthy(self.$scope()['$iter?']()) && ($not(self.$scope()['$lambda?']()))) && ($truthy((parent_def = self.$scope().$find_parent_def()))))) {
             return parent_def
           } else {
             return nil
           }
-        }, $ReturnNode_return_in_iter$ques$13.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$return_expr_in_def?', $ReturnNode_return_expr_in_def$ques$14 = function() {
-          var self = this, $ret_or_3 = nil, $ret_or_4 = nil;
+        $def(self, '$return_expr_in_def?', function $ReturnNode_return_expr_in_def$ques$3() {
+          var self = this;
 
-          if ($truthy((function() {if ($truthy(($ret_or_3 = self['$expr?']()))) {
-            
-            if ($truthy(($ret_or_4 = self.$scope()['$def?']()))) {
-              return $ret_or_4
-            } else {
-              return self.$scope()['$lambda?']()
-            };
-          } else {
-            return $ret_or_3
-          }; return nil; })())) {
+          if (($truthy(self['$expr?']()) && (($truthy(self.$scope()['$def?']()) || ($truthy(self.$scope()['$lambda?']())))))) {
             return self.$scope()
           } else {
             return nil
           }
-        }, $ReturnNode_return_expr_in_def$ques$14.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$scope_to_catch_return', $ReturnNode_scope_to_catch_return$15 = function $$scope_to_catch_return() {
-          var self = this, $ret_or_5 = nil;
+        $def(self, '$scope_to_catch_return', function $$scope_to_catch_return() {
+          var self = this, $ret_or_1 = nil;
 
-          if ($truthy(($ret_or_5 = self['$return_in_iter?']()))) {
-            return $ret_or_5
+          if ($truthy(($ret_or_1 = self['$return_in_iter?']()))) {
+            return $ret_or_1
           } else {
             return self['$return_expr_in_def?']()
           }
-        }, $ReturnNode_scope_to_catch_return$15.$$arity = 0);
-        return (Opal.def(self, '$compile', $ReturnNode_compile$16 = function $$compile() {
+        }, 0);
+        return $def(self, '$compile', function $$compile() {
           var self = this, def_scope = nil, $writer = nil;
 
           if ($truthy((def_scope = self.$scope_to_catch_return()))) {
             
             
             $writer = [true];
-            $send(def_scope, 'catch_return=', Opal.to_a($writer));
+            $send(def_scope, 'catch_return=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
             return self.$push("Opal.ret(", self.$return_val(), ")");
           } else if ($truthy(self['$stmt?']())) {
@@ -37263,67 +33941,57 @@ Opal.modules["opal/nodes/logic"] = function(Opal) {
           } else {
             return self.$error("void value expression: cannot return as an expression")
           }
-        }, $ReturnNode_compile$16.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'JSReturnNode');
 
-        var $nesting = [self].concat($parent_nesting), $JSReturnNode_compile$17;
-
+        
         
         self.$handle("js_return");
         self.$children("value");
-        return (Opal.def(self, '$compile', $JSReturnNode_compile$17 = function $$compile() {
+        return $def(self, '$compile', function $$compile() {
           var self = this;
 
           
           self.$push("return ");
           return self.$push(self.$expr(self.$value()));
-        }, $JSReturnNode_compile$17.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'JSTempNode');
 
-        var $nesting = [self].concat($parent_nesting), $JSTempNode_compile$18;
-
+        
         
         self.$handle("js_tmp");
         self.$children("value");
-        return (Opal.def(self, '$compile', $JSTempNode_compile$18 = function $$compile() {
+        return $def(self, '$compile', function $$compile() {
           var self = this;
 
           return self.$push(self.$value().$to_s())
-        }, $JSTempNode_compile$18.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      return (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('Base'));
+      return (function($base, $super) {
         var self = $klass($base, $super, 'BlockPassNode');
 
-        var $nesting = [self].concat($parent_nesting), $BlockPassNode_compile$19;
-
+        
         
         self.$handle("block_pass");
         self.$children("value");
-        return (Opal.def(self, '$compile', $BlockPassNode_compile$19 = function $$compile() {
+        return $def(self, '$compile', function $$compile() {
           var self = this;
 
           return self.$push(self.$expr(self.$s("send", self.$value(), "to_proc", self.$s("arglist"))))
-        }, $BlockPassNode_compile$19.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
+        }, 0);
+      })($nesting[0], $$('Base'));
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/definitions"] = function(Opal) {
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $range = Opal.range, $truthy = Opal.truthy, $slice = Opal.slice;
-
-  Opal.add_stubs(['$require', '$handle', '$children', '$each', '$line', '$expr', '$type', '$new_name', '$===', '$helper', '$inspect', '$[]', '$to_s', '$first', '$old_name', '$push', '$error', '$empty?', '$stmt?', '$compile_children', '$simple_children?', '$compile_inline_children', '$>', '$size', '$wrap', '$==', '$returned_children', '$+', '$returns', '$compiler', '$s', '$process', '$freeze', '$none?', '$include?', '$map', '$each_with_index', '$reject', '$to_proc']);
+Opal.modules["opal/nodes/definitions"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $def = Opal.def, $eqeqeq = Opal.eqeqeq, $range = Opal.range, $truthy = Opal.truthy, $rb_gt = Opal.rb_gt, $eqeq = Opal.eqeq, $to_a = Opal.to_a, $slice = Opal.slice, $rb_plus = Opal.rb_plus, $hash2 = Opal.hash2, $const_set = Opal.const_set;
+
+  Opal.add_stubs('require,handle,children,each,line,self,scope,expr,===,type,new_name,helper,inspect,[],to_s,first,old_name,push,error,empty?,stmt?,compile_children,simple_children?,compile_inline_children,>,size,wrap,==,returned_children,await_encountered,parent,+,returns,compiler,s,process,fragment,freeze,none?,include?,map,each_with_index,reject,to_proc');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -37334,68 +34002,68 @@ Opal.modules["opal/nodes/definitions"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
-      (function($base, $super, $parent_nesting) {
+      (function($base, $super) {
         var self = $klass($base, $super, 'UndefNode');
 
-        var $nesting = [self].concat($parent_nesting), $UndefNode_compile$1;
-
+        
         
         self.$handle("undef");
         self.$children("value");
-        return (Opal.def(self, '$compile', $UndefNode_compile$1 = function $$compile() {
-          var $$2, self = this;
+        return $def(self, '$compile', function $$compile() {
+          var self = this;
 
-          return $send(self.$children(), 'each', [], ($$2 = function(child){var self = $$2.$$s == null ? this : $$2.$$s;
+          return $send(self.$children(), 'each', [], function $$1(child){var self = $$1.$$s == null ? this : $$1.$$s;
 
             
             
-            if (child == null) {
-              child = nil;
-            };
-            return self.$line("Opal.udef(self, '$' + ", self.$expr(child), ");");}, $$2.$$s = self, $$2.$$arity = 1, $$2))
-        }, $UndefNode_compile$1.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+            if (child == null) child = nil;;
+            return self.$line("Opal.udef(" + (self.$scope().$self()) + ", '$' + ", self.$expr(child), ");");}, {$$arity: 1, $$s: self})
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'AliasNode');
 
-        var $nesting = [self].concat($parent_nesting), $AliasNode_compile$3;
-
+        
         
         self.$handle("alias");
         self.$children("new_name", "old_name");
-        return (Opal.def(self, '$compile', $AliasNode_compile$3 = function $$compile() {
-          var self = this, $case = nil, new_name_str = nil, old_name_str = nil;
-
-          return (function() {$case = self.$new_name().$type();
-          if ("gvar"['$===']($case)) {
-          self.$helper("alias_gvar");
-          new_name_str = self.$new_name().$children().$first().$to_s()['$[]']($range(1, -1, false)).$inspect();
-          old_name_str = self.$old_name().$children().$first().$to_s()['$[]']($range(1, -1, false)).$inspect();
-          return self.$push("$alias_gvar(", new_name_str, ", ", old_name_str, ")");}
-          else if ("dsym"['$===']($case) || "sym"['$===']($case)) {
-          self.$helper("alias");
-          return self.$push("$alias(self, ", self.$expr(self.$new_name()), ", ", self.$expr(self.$old_name()), ")");}
-          else {return self.$error("" + "Opal doesn't know yet how to alias with " + (self.$new_name().$type()))}})()
-        }, $AliasNode_compile$3.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
+        return $def(self, '$compile', function $$compile() {
+          var self = this, $ret_or_1 = nil, new_name_str = nil, old_name_str = nil;
+
+          if ($eqeqeq("gvar", ($ret_or_1 = self.$new_name().$type()))) {
+            
+            self.$helper("alias_gvar");
+            new_name_str = self.$new_name().$children().$first().$to_s()['$[]']($range(1, -1, false)).$inspect();
+            old_name_str = self.$old_name().$children().$first().$to_s()['$[]']($range(1, -1, false)).$inspect();
+            return self.$push("$alias_gvar(", new_name_str, ", ", old_name_str, ")");
+          } else if (($eqeqeq("dsym", $ret_or_1) || ($eqeqeq("sym", $ret_or_1)))) {
+            
+            self.$helper("alias");
+            return self.$push("$alias(" + (self.$scope().$self()) + ", ", self.$expr(self.$new_name()), ", ", self.$expr(self.$old_name()), ")");
+          } else {
+            return self.$error("Opal doesn't know yet how to alias with " + (self.$new_name().$type()))
+          }
+        }, 0);
+      })($nesting[0], $$('Base'));
       (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'BeginNode');
 
-        var $nesting = [self].concat($parent_nesting), $BeginNode_compile$4, $BeginNode_returned_children$5, $BeginNode_compile_children$6, $BeginNode_simple_children$ques$8, $BeginNode_compile_inline_children$10;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.level = self.$$prototype.returned_children = nil;
+        $proto.level = $proto.returned_children = nil;
         
         self.$handle("begin");
         
-        Opal.def(self, '$compile', $BeginNode_compile$4 = function $$compile() {
+        $def(self, '$compile', function $$compile() {
           var self = this;
 
           
           if ($truthy(self.$children()['$empty?']())) {
-            return self.$push("nil")};
+            return self.$push("nil")
+          };
           if ($truthy(self['$stmt?']())) {
             return self.$compile_children(self.$children(), self.level)
           } else if ($truthy(self['$simple_children?']())) {
@@ -37406,106 +34074,83 @@ Opal.modules["opal/nodes/definitions"] = function(Opal) {
             } else {
               return nil
             };
-          } else if (self.$children().$size()['$=='](1)) {
+          } else if ($eqeq(self.$children().$size(), 1)) {
             return self.$compile_inline_children(self.$returned_children(), self.level)
           } else {
             
             self.$compile_children(self.$returned_children(), self.level);
-            return self.$wrap("(function() {", "})()");
+            if ($truthy(self.$scope().$parent().$await_encountered())) {
+              return self.$wrap("(await (async function() {", "})())")
+            } else {
+              return self.$wrap("(function() {", "})()")
+            };
           };
-        }, $BeginNode_compile$4.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$returned_children', $BeginNode_returned_children$5 = function $$returned_children() {
+        $def(self, '$returned_children', function $$returned_children() {
           var $a, $b, self = this, $ret_or_1 = nil, rest = nil, last_child = nil;
 
-          return (self.returned_children = (function() {if ($truthy(($ret_or_1 = self.returned_children))) {
-            return $ret_or_1
-          } else {
-            
-            $a = [].concat(Opal.to_a(self.$children())), $b = $a.length - 1, $b = ($b < 0) ? 0 : $b, (rest = $slice.call($a, 0, $b)), (last_child = ($a[$b] == null ? nil : $a[$b])), $a;
-            if ($truthy(last_child)) {
-              return $rb_plus(rest, [self.$compiler().$returns(last_child)])
-            } else {
-              return [self.$s("nil")]
-            };
-          }; return nil; })())
-        }, $BeginNode_returned_children$5.$$arity = 0);
+          return (self.returned_children = ($truthy(($ret_or_1 = self.returned_children)) ? ($ret_or_1) : (($a = [].concat($to_a(self.$children())), $b = $a.length - 1, $b = ($b < 0) ? 0 : $b, (rest = $slice.call($a, 0, $b)), (last_child = ($a[$b] == null ? nil : $a[$b])), $a, ($truthy(last_child) ? ($rb_plus(rest, [self.$compiler().$returns(last_child)])) : ([self.$s("nil")]))))))
+        }, 0);
         
-        Opal.def(self, '$compile_children', $BeginNode_compile_children$6 = function $$compile_children(children, level) {
-          var $$7, self = this;
+        $def(self, '$compile_children', function $$compile_children(children, level) {
+          var self = this;
 
-          return $send(children, 'each', [], ($$7 = function(child){var self = $$7.$$s == null ? this : $$7.$$s;
+          return $send(children, 'each', [], function $$2(child){var self = $$2.$$s == null ? this : $$2.$$s;
 
             
             
-            if (child == null) {
-              child = nil;
-            };
-            return self.$line(self.$process(child, level), ";");}, $$7.$$s = self, $$7.$$arity = 1, $$7))
-        }, $BeginNode_compile_children$6.$$arity = 2);
-        Opal.const_set($nesting[0], 'COMPLEX_CHILDREN', ["while", "while_post", "until", "until_post", "js_return"].$freeze());
+            if (child == null) child = nil;;
+            return self.$line(self.$process(child, level), self.$fragment(";", $hash2(["loc"], {"loc": false})));}, {$$arity: 1, $$s: self})
+        }, 2);
+        $const_set($nesting[0], 'COMPLEX_CHILDREN', ["while", "while_post", "until", "until_post", "js_return"].$freeze());
         
-        Opal.def(self, '$simple_children?', $BeginNode_simple_children$ques$8 = function() {
-          var $$9, self = this;
-
-          return $send(self.$children(), 'none?', [], ($$9 = function(child){var self = $$9.$$s == null ? this : $$9.$$s;
+        $def(self, '$simple_children?', function $BeginNode_simple_children$ques$3() {
+          var self = this;
 
+          return $send(self.$children(), 'none?', [], function $$4(child){
             
             
-            if (child == null) {
-              child = nil;
-            };
-            return $$($nesting, 'COMPLEX_CHILDREN')['$include?'](child.$type());}, $$9.$$s = self, $$9.$$arity = 1, $$9))
-        }, $BeginNode_simple_children$ques$8.$$arity = 0);
-        return (Opal.def(self, '$compile_inline_children', $BeginNode_compile_inline_children$10 = function $$compile_inline_children(children, level) {
-          var $$11, $$12, self = this, processed_children = nil;
+            if (child == null) child = nil;;
+            return $$('COMPLEX_CHILDREN')['$include?'](child.$type());}, 1)
+        }, 0);
+        return $def(self, '$compile_inline_children', function $$compile_inline_children(children, level) {
+          var self = this, processed_children = nil;
 
           
-          processed_children = $send(children, 'map', [], ($$11 = function(child){var self = $$11.$$s == null ? this : $$11.$$s;
+          processed_children = $send(children, 'map', [], function $$5(child){var self = $$5.$$s == null ? this : $$5.$$s;
 
             
             
-            if (child == null) {
-              child = nil;
-            };
-            return self.$process(child, level);}, $$11.$$s = self, $$11.$$arity = 1, $$11));
-          return $send($send(processed_children, 'reject', [], "empty?".$to_proc()), 'each_with_index', [], ($$12 = function(child, idx){var self = $$12.$$s == null ? this : $$12.$$s;
+            if (child == null) child = nil;;
+            return self.$process(child, level);}, {$$arity: 1, $$s: self});
+          return $send($send(processed_children, 'reject', [], "empty?".$to_proc()), 'each_with_index', [], function $$6(child, idx){var self = $$6.$$s == null ? this : $$6.$$s;
 
             
             
-            if (child == null) {
-              child = nil;
-            };
+            if (child == null) child = nil;;
             
-            if (idx == null) {
-              idx = nil;
-            };
-            if (idx['$=='](0)) {
-            } else {
-              self.$push(", ")
+            if (idx == null) idx = nil;;
+            if (!$eqeq(idx, 0)) {
+              self.$push(self.$fragment(", ", $hash2(["loc"], {"loc": false})))
             };
-            return self.$push(child);}, $$12.$$s = self, $$12.$$arity = 2, $$12));
-        }, $BeginNode_compile_inline_children$10.$$arity = 2), nil) && 'compile_inline_children';
-      })($nesting[0], $$($nesting, 'ScopeNode'), $nesting);
-      return (function($base, $super, $parent_nesting) {
+            return self.$push(child);}, {$$arity: 2, $$s: self});
+        }, 2);
+      })($nesting[0], $$('ScopeNode'), $nesting);
+      return (function($base, $super) {
         var self = $klass($base, $super, 'KwBeginNode');
 
-        var $nesting = [self].concat($parent_nesting);
-
+        
         return self.$handle("kwbegin")
-      })($nesting[0], $$($nesting, 'BeginNode'), $nesting);
+      })($nesting[0], $$('BeginNode'));
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/yield"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send;
+Opal.modules["opal/nodes/yield"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$find_yielding_scope', '$uses_block!', '$block_name', '$block_name=', '$-', '$yields_single_arg?', '$children', '$push', '$expr', '$first', '$wrap', '$s', '$uses_splat?', '$scope', '$def?', '$parent', '$!', '$==', '$size', '$any?', '$type', '$handle', '$compile_call']);
+  Opal.add_stubs('require,find_yielding_scope,uses_block!,block_name,block_name=,-,yields_single_arg?,children,push,expr,first,wrap,s,uses_splat?,scope,def?,parent,!,==,size,any?,type,handle,compile_call');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -37516,17 +34161,16 @@ Opal.modules["opal/nodes/yield"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
-      (function($base, $super, $parent_nesting) {
+      (function($base, $super) {
         var self = $klass($base, $super, 'BaseYieldNode');
 
-        var $nesting = [self].concat($parent_nesting), $BaseYieldNode_compile_call$1, $BaseYieldNode_find_yielding_scope$2, $BaseYieldNode_yields_single_arg$ques$3, $BaseYieldNode_uses_splat$ques$4;
-
         
         
-        Opal.def(self, '$compile_call', $BaseYieldNode_compile_call$1 = function $$compile_call() {
+        
+        $def(self, '$compile_call', function $$compile_call() {
           var self = this, yielding_scope = nil, $ret_or_1 = nil, $writer = nil, block_name = nil;
 
           
@@ -37537,105 +34181,92 @@ Opal.modules["opal/nodes/yield"] = function(Opal) {
           } else {
             
             $writer = ["$yield"];
-            $send(yielding_scope, 'block_name=', Opal.to_a($writer));
+            $send(yielding_scope, 'block_name=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];
           };
           block_name = yielding_scope.$block_name();
           if ($truthy(self['$yields_single_arg?'](self.$children()))) {
             
             self.$push(self.$expr(self.$children().$first()));
-            return self.$wrap("" + "Opal.yield1(" + (block_name) + ", ", ")");
+            return self.$wrap("Opal.yield1(" + (block_name) + ", ", ")");
           } else {
             
-            self.$push(self.$expr($send(self, 's', ["arglist"].concat(Opal.to_a(self.$children())))));
+            self.$push(self.$expr($send(self, 's', ["arglist"].concat($to_a(self.$children())))));
             if ($truthy(self['$uses_splat?'](self.$children()))) {
-              return self.$wrap("" + "Opal.yieldX(" + (block_name) + ", ", ")")
+              return self.$wrap("Opal.yieldX(" + (block_name) + ", ", ")")
             } else {
-              return self.$wrap("" + "Opal.yieldX(" + (block_name) + ", [", "])")
+              return self.$wrap("Opal.yieldX(" + (block_name) + ", [", "])")
             };
           };
-        }, $BaseYieldNode_compile_call$1.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$find_yielding_scope', $BaseYieldNode_find_yielding_scope$2 = function $$find_yielding_scope() {
-          var $a, self = this, working = nil, $ret_or_2 = nil;
+        $def(self, '$find_yielding_scope', function $$find_yielding_scope() {
+          var $a, self = this, working = nil;
 
           
           working = self.$scope();
           while ($truthy(working)) {
             
-            if ($truthy((function() {if ($truthy(($ret_or_2 = working.$block_name()))) {
-              return $ret_or_2
-            } else {
-              return working['$def?']()
-            }; return nil; })())) {
-              break;};
+            if (($truthy(working.$block_name()) || ($truthy(working['$def?']())))) {
+              break;
+            };
             working = working.$parent();
           };
           return working;
-        }, $BaseYieldNode_find_yielding_scope$2.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$yields_single_arg?', $BaseYieldNode_yields_single_arg$ques$3 = function(children) {
-          var self = this, $ret_or_3 = nil;
+        $def(self, '$yields_single_arg?', function $BaseYieldNode_yields_single_arg$ques$1(children) {
+          var self = this, $ret_or_1 = nil;
 
-          if ($truthy(($ret_or_3 = self['$uses_splat?'](children)['$!']()))) {
+          if ($truthy(($ret_or_1 = self['$uses_splat?'](children)['$!']()))) {
             return children.$size()['$=='](1)
           } else {
-            return $ret_or_3
+            return $ret_or_1
           }
-        }, $BaseYieldNode_yields_single_arg$ques$3.$$arity = 1);
-        return (Opal.def(self, '$uses_splat?', $BaseYieldNode_uses_splat$ques$4 = function(children) {
-          var $$5, self = this;
-
-          return $send(children, 'any?', [], ($$5 = function(child){var self = $$5.$$s == null ? this : $$5.$$s;
-
+        }, 1);
+        return $def(self, '$uses_splat?', function $BaseYieldNode_uses_splat$ques$2(children) {
+          
+          return $send(children, 'any?', [], function $$3(child){
             
             
-            if (child == null) {
-              child = nil;
-            };
-            return child.$type()['$==']("splat");}, $$5.$$s = self, $$5.$$arity = 1, $$5))
-        }, $BaseYieldNode_uses_splat$ques$4.$$arity = 1), nil) && 'uses_splat?';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+            if (child == null) child = nil;;
+            return child.$type()['$==']("splat");}, 1)
+        }, 1);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'YieldNode');
 
-        var $nesting = [self].concat($parent_nesting), $YieldNode_compile$6;
-
+        
         
         self.$handle("yield");
-        return (Opal.def(self, '$compile', $YieldNode_compile$6 = function $$compile() {
+        return $def(self, '$compile', function $$compile() {
           var self = this;
 
           return self.$compile_call()
-        }, $YieldNode_compile$6.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'BaseYieldNode'), $nesting);
-      return (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('BaseYieldNode'));
+      return (function($base, $super) {
         var self = $klass($base, $super, 'ReturnableYieldNode');
 
-        var $nesting = [self].concat($parent_nesting), $ReturnableYieldNode_compile$7;
-
+        
         
         self.$handle("returnable_yield");
-        return (Opal.def(self, '$compile', $ReturnableYieldNode_compile$7 = function $$compile() {
+        return $def(self, '$compile', function $$compile() {
           var self = this;
 
           
           self.$compile_call();
           return self.$wrap("return ", ";");
-        }, $ReturnableYieldNode_compile$7.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'BaseYieldNode'), $nesting);
+        }, 0);
+      })($nesting[0], $$('BaseYieldNode'));
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/rescue"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy, $range = Opal.range;
+Opal.modules["opal/nodes/rescue"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy, $def = Opal.def, $range = Opal.range, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $eqeq = Opal.eqeq;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$push', '$in_ensure', '$line', '$stmt', '$body_sexp', '$indent', '$has_rescue_else?', '$unshift', '$rescue_else_code', '$process', '$compiler', '$ensr_sexp', '$wrap_in_closure?', '$wrap', '$returns', '$begn', '$ensr', '$s', '$recv?', '$expr?', '$rescue_else_sexp', '$scope', '$stmt?', '$detect', '$[]', '$!=', '$type', '$rescue_else_sexp=', '$-', '$handle_rescue_else_manually?', '$in_rescue', '$body_code', '$each_with_index', '$==', '$retry_id', '$nil?', '$body', '$!', '$in_ensure?', '$gen_retry_id', '$attr_reader', '$expr', '$klasses', '$lvar', '$updated', '$in_resbody', '$rescue_body', '$klasses_sexp', '$in_resbody?', '$error', '$current_rescue']);
+  Opal.add_stubs('require,handle,children,push,in_ensure,line,stmt,body_sexp,indent,has_rescue_else?,unshift,rescue_else_code,process,compiler,ensr_sexp,wrap_in_closure?,await_encountered,scope,wrap,returns,begn,ensr,s,recv?,expr?,rescue_else_sexp,stmt?,detect,[],!=,type,rescue_else_sexp=,-,handle_rescue_else_manually?,in_rescue,body_code,each_with_index,==,retry_id,body,nil?,!,in_ensure?,gen_retry_id,attr_reader,expr,klasses,lvar,updated,in_resbody,rescue_body,klasses_sexp,in_resbody?,error,current_rescue');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -37646,28 +34277,27 @@ Opal.modules["opal/nodes/rescue"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
-      (function($base, $super, $parent_nesting) {
+      (function($base, $super) {
         var self = $klass($base, $super, 'EnsureNode');
 
-        var $nesting = [self].concat($parent_nesting), $EnsureNode_compile$1, $EnsureNode_body_sexp$6, $EnsureNode_ensr_sexp$7, $EnsureNode_wrap_in_closure$ques$8, $EnsureNode_rescue_else_code$9;
-
+        
         
         self.$handle("ensure");
         self.$children("begn", "ensr");
         
-        Opal.def(self, '$compile', $EnsureNode_compile$1 = function $$compile() {
-          var $$2, $$3, self = this;
+        $def(self, '$compile', function $$compile() {
+          var self = this;
 
           
           self.$push("try {");
-          $send(self, 'in_ensure', [], ($$2 = function(){var self = $$2.$$s == null ? this : $$2.$$s;
+          $send(self, 'in_ensure', [], function $$1(){var self = $$1.$$s == null ? this : $$1.$$s;
 
-            return self.$line(self.$stmt(self.$body_sexp()))}, $$2.$$s = self, $$2.$$arity = 0, $$2));
+            return self.$line(self.$stmt(self.$body_sexp()))}, {$$arity: 0, $$s: self});
           self.$line("} finally {");
-          $send(self, 'indent', [], ($$3 = function(){var self = $$3.$$s == null ? this : $$3.$$s, $$4;
+          $send(self, 'indent', [], function $$2(){var self = $$2.$$s == null ? this : $$2.$$s;
             if (self.level == null) self.level = nil;
 
             if ($truthy(self['$has_rescue_else?']())) {
@@ -37675,29 +34305,33 @@ Opal.modules["opal/nodes/rescue"] = function(Opal) {
               self.$unshift("var $no_errors = true; ");
               self.$line("var $rescue_else_result;");
               self.$line("if ($no_errors) { ");
-              $send(self, 'indent', [], ($$4 = function(){var self = $$4.$$s == null ? this : $$4.$$s, $$5;
+              $send(self, 'indent', [], function $$3(){var self = $$3.$$s == null ? this : $$3.$$s;
 
                 
                 self.$line("$rescue_else_result = (function() {");
-                $send(self, 'indent', [], ($$5 = function(){var self = $$5.$$s == null ? this : $$5.$$s;
+                $send(self, 'indent', [], function $$4(){var self = $$4.$$s == null ? this : $$4.$$s;
 
-                  return self.$line(self.$stmt(self.$rescue_else_code()))}, $$5.$$s = self, $$5.$$arity = 0, $$5));
-                return self.$line("})();");}, $$4.$$s = self, $$4.$$arity = 0, $$4));
+                  return self.$line(self.$stmt(self.$rescue_else_code()))}, {$$arity: 0, $$s: self});
+                return self.$line("})();");}, {$$arity: 0, $$s: self});
               self.$line("}");
               self.$line(self.$compiler().$process(self.$ensr_sexp(), self.level));
               return self.$line("if ($no_errors) { return $rescue_else_result; }");
             } else {
               return self.$line(self.$compiler().$process(self.$ensr_sexp(), self.level))
-            }}, $$3.$$s = self, $$3.$$arity = 0, $$3));
+            }}, {$$arity: 0, $$s: self});
           self.$line("}");
           if ($truthy(self['$wrap_in_closure?']())) {
-            return self.$wrap("(function() { ", "; })()")
+            if ($truthy(self.$scope().$await_encountered())) {
+              return self.$wrap("(await (async function() { ", "; })())")
+            } else {
+              return self.$wrap("(function() { ", "; })()")
+            }
           } else {
             return nil
           };
-        }, $EnsureNode_compile$1.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$body_sexp', $EnsureNode_body_sexp$6 = function $$body_sexp() {
+        $def(self, '$body_sexp', function $$body_sexp() {
           var self = this;
 
           if ($truthy(self['$wrap_in_closure?']())) {
@@ -37705,9 +34339,9 @@ Opal.modules["opal/nodes/rescue"] = function(Opal) {
           } else {
             return self.$begn()
           }
-        }, $EnsureNode_body_sexp$6.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$ensr_sexp', $EnsureNode_ensr_sexp$7 = function $$ensr_sexp() {
+        $def(self, '$ensr_sexp', function $$ensr_sexp() {
           var self = this, $ret_or_1 = nil;
 
           if ($truthy(($ret_or_1 = self.$ensr()))) {
@@ -37715,462 +34349,232 @@ Opal.modules["opal/nodes/rescue"] = function(Opal) {
           } else {
             return self.$s("nil")
           }
-        }, $EnsureNode_ensr_sexp$7.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$wrap_in_closure?', $EnsureNode_wrap_in_closure$ques$8 = function() {
-          var self = this, $ret_or_2 = nil, $ret_or_3 = nil;
+        $def(self, '$wrap_in_closure?', function $EnsureNode_wrap_in_closure$ques$5() {
+          var self = this, $ret_or_1 = nil, $ret_or_2 = nil;
 
-          if ($truthy(($ret_or_2 = (function() {if ($truthy(($ret_or_3 = self['$recv?']()))) {
-            return $ret_or_3
-          } else {
-            return self['$expr?']()
-          }; return nil; })()))) {
-            return $ret_or_2
+          if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = self['$recv?']())) ? ($ret_or_2) : (self['$expr?']()))))) {
+            return $ret_or_1
           } else {
             return self['$has_rescue_else?']()
           }
-        }, $EnsureNode_wrap_in_closure$ques$8.$$arity = 0);
-        return (Opal.def(self, '$rescue_else_code', $EnsureNode_rescue_else_code$9 = function $$rescue_else_code() {
+        }, 0);
+        return $def(self, '$rescue_else_code', function $$rescue_else_code() {
           var self = this, rescue_else_code = nil;
 
           
           rescue_else_code = self.$scope().$rescue_else_sexp();
-          if ($truthy(self['$stmt?']())) {
-          } else {
+          if (!$truthy(self['$stmt?']())) {
             rescue_else_code = self.$compiler().$returns(rescue_else_code)
           };
           return rescue_else_code;
-        }, $EnsureNode_rescue_else_code$9.$$arity = 0), nil) && 'rescue_else_code';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'RescueNode');
 
-        var $nesting = [self].concat($parent_nesting), $RescueNode_compile$10, $RescueNode_body_code$18, $RescueNode_rescue_else_code$19, $RescueNode_handle_rescue_else_manually$ques$20, $RescueNode_gen_retry_id$21;
+        var $proto = self.$$prototype;
 
-        self.$$prototype.retry_id = nil;
+        $proto.retry_id = nil;
         
         self.$handle("rescue");
         self.$children("body");
         
-        Opal.def(self, '$compile', $RescueNode_compile$10 = function $$compile() {
-          var $$11, $$12, self = this, $writer = nil, _has_rescue_handlers = nil, $ret_or_6 = nil;
+        $def(self, '$compile', function $$compile() {
+          var self = this, $writer = nil, _has_rescue_handlers = nil;
 
           
           
-          $writer = [$send(self.$children()['$[]']($range(1, -1, false)), 'detect', [], ($$11 = function(sexp){var self = $$11.$$s == null ? this : $$11.$$s, $ret_or_4 = nil;
+          $writer = [$send(self.$children()['$[]']($range(1, -1, false)), 'detect', [], function $$6(sexp){var $ret_or_1 = nil;
 
             
             
-            if (sexp == null) {
-              sexp = nil;
-            };
-            if ($truthy(($ret_or_4 = sexp))) {
+            if (sexp == null) sexp = nil;;
+            if ($truthy(($ret_or_1 = sexp))) {
               return sexp.$type()['$!=']("resbody")
             } else {
-              return $ret_or_4
-            };}, $$11.$$s = self, $$11.$$arity = 1, $$11))];
-          $send(self.$scope(), 'rescue_else_sexp=', Opal.to_a($writer));
+              return $ret_or_1
+            };}, 1)];
+          $send(self.$scope(), 'rescue_else_sexp=', $to_a($writer));
           $writer[$rb_minus($writer["length"], 1)];;
           _has_rescue_handlers = false;
           if ($truthy(self['$handle_rescue_else_manually?']())) {
-            self.$line("var $no_errors = true;")};
-          $send(self, 'in_rescue', [self], ($$12 = function(){var self = $$12.$$s == null ? this : $$12.$$s, $$13, $$14, $$16;
+            self.$line("var $no_errors = true;")
+          };
+          $send(self, 'in_rescue', [self], function $$7(){var self = $$7.$$s == null ? this : $$7.$$s;
 
             
             self.$push("try {");
-            $send(self, 'indent', [], ($$13 = function(){var self = $$13.$$s == null ? this : $$13.$$s;
+            $send(self, 'indent', [], function $$8(){var self = $$8.$$s == null ? this : $$8.$$s;
 
-              return self.$line(self.$stmt(self.$body_code()))}, $$13.$$s = self, $$13.$$arity = 0, $$13));
+              return self.$line(self.$stmt(self.$body_code()))}, {$$arity: 0, $$s: self});
             self.$line("} catch ($err) {");
-            $send(self, 'indent', [], ($$14 = function(){var self = $$14.$$s == null ? this : $$14.$$s, $$15;
+            $send(self, 'indent', [], function $$9(){var self = $$9.$$s == null ? this : $$9.$$s;
 
               
               if ($truthy(self['$has_rescue_else?']())) {
-                self.$line("$no_errors = false;")};
-              $send(self.$children()['$[]']($range(1, -1, false)), 'each_with_index', [], ($$15 = function(child, idx){var self = $$15.$$s == null ? this : $$15.$$s, $ret_or_5 = nil;
+                self.$line("$no_errors = false;")
+              };
+              $send(self.$children()['$[]']($range(1, -1, false)), 'each_with_index', [], function $$10(child, idx){var self = $$10.$$s == null ? this : $$10.$$s;
                 if (self.level == null) self.level = nil;
 
                 
                 
-                if (child == null) {
-                  child = nil;
-                };
+                if (child == null) child = nil;;
                 
-                if (idx == null) {
-                  idx = nil;
-                };
-                if ($truthy((function() {if ($truthy(($ret_or_5 = child))) {
-                  return child.$type()['$==']("resbody")
-                } else {
-                  return $ret_or_5
-                }; return nil; })())) {
-                } else {
+                if (idx == null) idx = nil;;
+                if (!($truthy(child) && ($eqeq(child.$type(), "resbody")))) {
                   return nil;
                 };
                 _has_rescue_handlers = true;
-                if (idx['$=='](0)) {
-                } else {
+                if (!$eqeq(idx, 0)) {
                   self.$push(" else ")
                 };
-                return self.$line(self.$process(child, self.level));}, $$15.$$s = self, $$15.$$arity = 2, $$15));
-              return self.$push(" else { throw $err; }");}, $$14.$$s = self, $$14.$$arity = 0, $$14));
+                return self.$line(self.$process(child, self.level));}, {$$arity: 2, $$s: self});
+              return self.$push(" else { throw $err; }");}, {$$arity: 0, $$s: self});
             self.$line("}");
             if ($truthy(self['$handle_rescue_else_manually?']())) {
               
               self.$push("finally {");
-              $send(self, 'indent', [], ($$16 = function(){var self = $$16.$$s == null ? this : $$16.$$s, $$17;
+              $send(self, 'indent', [], function $$11(){var self = $$11.$$s == null ? this : $$11.$$s;
 
                 
                 self.$line("if ($no_errors) { ");
-                $send(self, 'indent', [], ($$17 = function(){var self = $$17.$$s == null ? this : $$17.$$s;
+                $send(self, 'indent', [], function $$12(){var self = $$12.$$s == null ? this : $$12.$$s;
 
-                  return self.$line(self.$stmt(self.$rescue_else_code()))}, $$17.$$s = self, $$17.$$arity = 0, $$17));
-                return self.$line("}");}, $$16.$$s = self, $$16.$$arity = 0, $$16));
-              self.$push("}");};
+                  return self.$line(self.$stmt(self.$rescue_else_code()))}, {$$arity: 0, $$s: self});
+                return self.$line("}");}, {$$arity: 0, $$s: self});
+              self.$push("}");
+            };
             if ($truthy(self.$retry_id())) {
               return self.$wrap("" + (self.$retry_id()) + ": do { ", " break; } while(1)")
             } else {
               return nil
-            };}, $$12.$$s = self, $$12.$$arity = 0, $$12));
-          if ($truthy((function() {if ($truthy(($ret_or_6 = self['$expr?']()))) {
-            return $ret_or_6
-          } else {
-            return self['$recv?']()
-          }; return nil; })())) {
-            return self.$wrap("(function() { ", "})()")
+            };}, {$$arity: 0, $$s: self});
+          if (($truthy(self['$expr?']()) || ($truthy(self['$recv?']())))) {
+            if ($truthy(self.$scope().$await_encountered())) {
+              return self.$wrap("(await (async function() { ", "})())")
+            } else {
+              return self.$wrap("(function() { ", "})()")
+            }
           } else {
             return nil
           };
-        }, $RescueNode_compile$10.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$body_code', $RescueNode_body_code$18 = function $$body_code() {
-          var self = this, body_code = nil, $ret_or_7 = nil;
+        $def(self, '$body_code', function $$body_code() {
+          var self = this, body_code = nil;
 
           
-          body_code = (function() {if ($truthy((function() {if ($truthy(($ret_or_7 = self.$body()['$nil?']()))) {
-            return $ret_or_7
-          } else {
-            return self.$body().$type()['$==']("resbody")
-          }; return nil; })())) {
-            return self.$s("nil")
-          } else {
-            return self.$body()
-          }; return nil; })();
-          if ($truthy(self['$stmt?']())) {
-          } else {
+          body_code = (($truthy(self.$body()['$nil?']()) || ($eqeq(self.$body().$type(), "resbody"))) ? (self.$s("nil")) : (self.$body()));
+          if (!$truthy(self['$stmt?']())) {
             body_code = self.$compiler().$returns(body_code)
           };
           return body_code;
-        }, $RescueNode_body_code$18.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$rescue_else_code', $RescueNode_rescue_else_code$19 = function $$rescue_else_code() {
+        $def(self, '$rescue_else_code', function $$rescue_else_code() {
           var self = this, rescue_else_code = nil;
 
           
           rescue_else_code = self.$scope().$rescue_else_sexp();
-          if ($truthy(self['$stmt?']())) {
-          } else {
+          if (!$truthy(self['$stmt?']())) {
             rescue_else_code = self.$compiler().$returns(rescue_else_code)
           };
           return rescue_else_code;
-        }, $RescueNode_rescue_else_code$19.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$handle_rescue_else_manually?', $RescueNode_handle_rescue_else_manually$ques$20 = function() {
-          var self = this, $ret_or_8 = nil;
+        $def(self, '$handle_rescue_else_manually?', function $RescueNode_handle_rescue_else_manually$ques$13() {
+          var self = this, $ret_or_1 = nil;
 
-          if ($truthy(($ret_or_8 = self['$in_ensure?']()['$!']()))) {
+          if ($truthy(($ret_or_1 = self['$in_ensure?']()['$!']()))) {
             return self['$has_rescue_else?']()
           } else {
-            return $ret_or_8
+            return $ret_or_1
           }
-        }, $RescueNode_handle_rescue_else_manually$ques$20.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$gen_retry_id', $RescueNode_gen_retry_id$21 = function $$gen_retry_id() {
-          var self = this, $ret_or_9 = nil;
+        $def(self, '$gen_retry_id', function $$gen_retry_id() {
+          var self = this, $ret_or_1 = nil;
 
-          return (self.retry_id = (function() {if ($truthy(($ret_or_9 = self.retry_id))) {
-            return $ret_or_9
-          } else {
-            return self.$scope().$gen_retry_id()
-          }; return nil; })())
-        }, $RescueNode_gen_retry_id$21.$$arity = 0);
+          return (self.retry_id = ($truthy(($ret_or_1 = self.retry_id)) ? ($ret_or_1) : (self.$scope().$gen_retry_id())))
+        }, 0);
         return self.$attr_reader("retry_id");
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'ResBodyNode');
 
-        var $nesting = [self].concat($parent_nesting), $ResBodyNode_compile$22, $ResBodyNode_klasses$26, $ResBodyNode_rescue_body$27;
-
+        
         
         self.$handle("resbody");
         self.$children("klasses_sexp", "lvar", "body");
         
-        Opal.def(self, '$compile', $ResBodyNode_compile$22 = function $$compile() {
-          var $$23, self = this;
+        $def(self, '$compile', function $$compile() {
+          var self = this;
 
           
           self.$push("if (Opal.rescue($err, ", self.$expr(self.$klasses()), ")) {");
-          $send(self, 'indent', [], ($$23 = function(){var self = $$23.$$s == null ? this : $$23.$$s, $$24;
+          $send(self, 'indent', [], function $$14(){var self = $$14.$$s == null ? this : $$14.$$s;
 
             
             if ($truthy(self.$lvar())) {
-              self.$push(self.$expr(self.$lvar().$updated(nil, [].concat(Opal.to_a(self.$lvar().$children())).concat([self.$s("js_tmp", "$err")]))))};
+              self.$push(self.$expr(self.$lvar().$updated(nil, [].concat($to_a(self.$lvar().$children())).concat([self.$s("js_tmp", "$err")]))))
+            };
             self.$line("try {");
-            $send(self, 'indent', [], ($$24 = function(){var self = $$24.$$s == null ? this : $$24.$$s, $$25;
+            $send(self, 'indent', [], function $$15(){var self = $$15.$$s == null ? this : $$15.$$s;
 
-              return $send(self, 'in_resbody', [], ($$25 = function(){var self = $$25.$$s == null ? this : $$25.$$s;
+              return $send(self, 'in_resbody', [], function $$16(){var self = $$16.$$s == null ? this : $$16.$$s;
 
-                return self.$line(self.$stmt(self.$rescue_body()))}, $$25.$$s = self, $$25.$$arity = 0, $$25))}, $$24.$$s = self, $$24.$$arity = 0, $$24));
-            return self.$line("} finally { Opal.pop_exception(); }");}, $$23.$$s = self, $$23.$$arity = 0, $$23));
+                return self.$line(self.$stmt(self.$rescue_body()))}, {$$arity: 0, $$s: self})}, {$$arity: 0, $$s: self});
+            return self.$line("} finally { Opal.pop_exception(); }");}, {$$arity: 0, $$s: self});
           return self.$line("}");
-        }, $ResBodyNode_compile$22.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$klasses', $ResBodyNode_klasses$26 = function $$klasses() {
-          var self = this, $ret_or_10 = nil;
+        $def(self, '$klasses', function $$klasses() {
+          var self = this, $ret_or_1 = nil;
 
-          if ($truthy(($ret_or_10 = self.$klasses_sexp()))) {
-            return $ret_or_10
+          if ($truthy(($ret_or_1 = self.$klasses_sexp()))) {
+            return $ret_or_1
           } else {
             return self.$s("array", self.$s("const", nil, "StandardError"))
           }
-        }, $ResBodyNode_klasses$26.$$arity = 0);
-        return (Opal.def(self, '$rescue_body', $ResBodyNode_rescue_body$27 = function $$rescue_body() {
-          var self = this, body_code = nil, $ret_or_11 = nil;
+        }, 0);
+        return $def(self, '$rescue_body', function $$rescue_body() {
+          var self = this, body_code = nil, $ret_or_1 = nil;
 
           
-          body_code = (function() {if ($truthy(($ret_or_11 = self.$body()))) {
-            return $ret_or_11
-          } else {
-            return self.$s("nil")
-          }; return nil; })();
-          if ($truthy(self['$stmt?']())) {
-          } else {
+          body_code = ($truthy(($ret_or_1 = self.$body())) ? ($ret_or_1) : (self.$s("nil")));
+          if (!$truthy(self['$stmt?']())) {
             body_code = self.$compiler().$returns(body_code)
           };
           return body_code;
-        }, $ResBodyNode_rescue_body$27.$$arity = 0), nil) && 'rescue_body';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      return (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('Base'));
+      return (function($base, $super) {
         var self = $klass($base, $super, 'RetryNode');
 
-        var $nesting = [self].concat($parent_nesting), $RetryNode_compile$28;
-
+        
         
         self.$handle("retry");
-        return (Opal.def(self, '$compile', $RetryNode_compile$28 = function $$compile() {
+        return $def(self, '$compile', function $$compile() {
           var self = this;
 
           
-          if ($truthy(self['$in_resbody?']())) {
-          } else {
+          if (!$truthy(self['$in_resbody?']())) {
             self.$error("Invalid retry")
           };
-          return self.$push("" + "continue " + (self.$scope().$current_rescue().$gen_retry_id()));
-        }, $RetryNode_compile$28.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-    })($nesting[0], $nesting)
-  })($nesting[0], $nesting);
-};
-
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/case"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy, $range = Opal.range;
-
-  Opal.add_stubs(['$require', '$handle', '$children', '$in_case', '$compiler', '$compile_code', '$needs_closure?', '$wrap', '$condition', '$[]=', '$case_stmt', '$-', '$add_local', '$push', '$expr', '$each_with_index', '$case_parts', '$line', '$type', '$===', '$returns', '$==', '$stmt', '$!', '$stmt?', '$[]', '$when_checks', '$js_truthy', '$s', '$process', '$body_code', '$last']);
-  
-  self.$require("opal/nodes/base");
-  return (function($base, $parent_nesting) {
-    var self = $module($base, 'Opal');
-
-    var $nesting = [self].concat($parent_nesting);
-
-    return (function($base, $parent_nesting) {
-      var self = $module($base, 'Nodes');
-
-      var $nesting = [self].concat($parent_nesting);
-
-      
-      (function($base, $super, $parent_nesting) {
-        var self = $klass($base, $super, 'CaseNode');
-
-        var $nesting = [self].concat($parent_nesting), $CaseNode_compile$1, $CaseNode_compile_code$3, $CaseNode_needs_closure$ques$5, $CaseNode_case_parts$6, $CaseNode_case_stmt$7;
-
-        
-        self.$handle("case");
-        self.$children("condition");
-        
-        Opal.def(self, '$compile', $CaseNode_compile$1 = function $$compile() {
-          var $$2, self = this;
-
-          return $send(self.$compiler(), 'in_case', [], ($$2 = function(){var self = $$2.$$s == null ? this : $$2.$$s;
-
-            
-            self.$compile_code();
-            if ($truthy(self['$needs_closure?']())) {
-              return self.$wrap("(function() {", "})()")
-            } else {
-              return nil
-            };}, $$2.$$s = self, $$2.$$arity = 0, $$2))
-        }, $CaseNode_compile$1.$$arity = 0);
-        
-        Opal.def(self, '$compile_code', $CaseNode_compile_code$3 = function $$compile_code() {
-          var $$4, self = this, handled_else = nil, $writer = nil, $ret_or_1 = nil;
-
-          
-          handled_else = false;
-          if ($truthy(self.$condition())) {
-            
-            
-            $writer = ["cond", true];
-            $send(self.$case_stmt(), '[]=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];;
-            self.$add_local("$case");
-            self.$push("$case = ", self.$expr(self.$condition()), ";");};
-          $send(self.$case_parts(), 'each_with_index', [], ($$4 = function(wen, idx){var self = $$4.$$s == null ? this : $$4.$$s, $case = nil;
-
-            
-            
-            if (wen == null) {
-              wen = nil;
-            };
-            
-            if (idx == null) {
-              idx = nil;
-            };
-            if ($truthy(wen)) {
-            } else {
-              return nil;
-            };
-            self.$line();
-            return (function() {$case = wen.$type();
-            if ("when"['$===']($case)) {
-            if ($truthy(self['$needs_closure?']())) {
-              wen = self.$compiler().$returns(wen)};
-            if (idx['$=='](0)) {
-            } else {
-              self.$push("else ")
-            };
-            return self.$push(self.$stmt(wen));}
-            else {
-            handled_else = true;
-            if ($truthy(self['$needs_closure?']())) {
-              wen = self.$compiler().$returns(wen)};
-            return self.$push("else {", self.$stmt(wen), "}");}})();}, $$4.$$s = self, $$4.$$arity = 2, $$4));
-          if ($truthy((function() {if ($truthy(($ret_or_1 = self['$needs_closure?']()))) {
-            return handled_else['$!']()
-          } else {
-            return $ret_or_1
-          }; return nil; })())) {
-            
-            self.$line();
-            return self.$push("else { return nil }");
-          } else {
-            return nil
-          };
-        }, $CaseNode_compile_code$3.$$arity = 0);
-        
-        Opal.def(self, '$needs_closure?', $CaseNode_needs_closure$ques$5 = function() {
-          var self = this;
-
-          return self['$stmt?']()['$!']()
-        }, $CaseNode_needs_closure$ques$5.$$arity = 0);
-        
-        Opal.def(self, '$case_parts', $CaseNode_case_parts$6 = function $$case_parts() {
-          var self = this;
-
-          return self.$children()['$[]']($range(1, -1, false))
-        }, $CaseNode_case_parts$6.$$arity = 0);
-        return (Opal.def(self, '$case_stmt', $CaseNode_case_stmt$7 = function $$case_stmt() {
-          var self = this;
-
-          return self.$compiler().$case_stmt()
-        }, $CaseNode_case_stmt$7.$$arity = 0), nil) && 'case_stmt';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      return (function($base, $super, $parent_nesting) {
-        var self = $klass($base, $super, 'WhenNode');
-
-        var $nesting = [self].concat($parent_nesting), $WhenNode_compile$8, $WhenNode_when_checks$10, $WhenNode_case_stmt$11, $WhenNode_body_code$12;
-
-        self.$$prototype.level = nil;
-        
-        self.$handle("when");
-        self.$children("whens", "body");
-        
-        Opal.def(self, '$compile', $WhenNode_compile$8 = function $$compile() {
-          var $$9, self = this;
-
-          
-          self.$push("if (");
-          $send(self.$when_checks(), 'each_with_index', [], ($$9 = function(check, idx){var self = $$9.$$s == null ? this : $$9.$$s, call = nil;
-
-            
-            
-            if (check == null) {
-              check = nil;
-            };
-            
-            if (idx == null) {
-              idx = nil;
-            };
-            if (idx['$=='](0)) {
-            } else {
-              self.$push(" || ")
-            };
-            if (check.$type()['$==']("splat")) {
-              
-              self.$push("(function($splt) { for (var i = 0, ii = $splt.length; i < ii; i++) {");
-              if ($truthy(self.$case_stmt()['$[]']("cond"))) {
-                self.$push("if ($splt[i]['$===']($case)) { return true; }")
-              } else {
-                self.$push("if (", self.$js_truthy(check), ")) { return true; }")
-              };
-              return self.$push("} return false; })(", self.$expr(check.$children()['$[]'](0)), ")");
-            } else if ($truthy(self.$case_stmt()['$[]']("cond"))) {
-              
-              call = self.$s("send", check, "===", self.$s("arglist", self.$s("js_tmp", "$case")));
-              return self.$push(self.$expr(call));
-            } else {
-              return self.$push(self.$js_truthy(check))
-            };}, $$9.$$s = self, $$9.$$arity = 2, $$9));
-          return self.$push(") {", self.$process(self.$body_code(), self.level), "}");
-        }, $WhenNode_compile$8.$$arity = 0);
-        
-        Opal.def(self, '$when_checks', $WhenNode_when_checks$10 = function $$when_checks() {
-          var self = this;
-
-          return self.$children()['$[]']($range(0, -2, false))
-        }, $WhenNode_when_checks$10.$$arity = 0);
-        
-        Opal.def(self, '$case_stmt', $WhenNode_case_stmt$11 = function $$case_stmt() {
-          var self = this;
-
-          return self.$compiler().$case_stmt()
-        }, $WhenNode_case_stmt$11.$$arity = 0);
-        return (Opal.def(self, '$body_code', $WhenNode_body_code$12 = function $$body_code() {
-          var self = this, $ret_or_2 = nil;
-
-          if ($truthy(($ret_or_2 = self.$children().$last()))) {
-            return $ret_or_2
-          } else {
-            return self.$s("nil")
-          }
-        }, $WhenNode_body_code$12.$$arity = 0), nil) && 'body_code';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
+          return self.$push("continue " + (self.$scope().$current_rescue().$gen_retry_id()));
+        }, 0);
+      })($nesting[0], $$('Base'));
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/super"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $slice = Opal.slice, $truthy = Opal.truthy, $send = Opal.send;
+Opal.modules["opal/nodes/super"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $to_a = Opal.to_a, $slice = Opal.slice, $truthy = Opal.truthy, $send = Opal.send, $def = Opal.def, $to_ary = Opal.to_ary, $eqeq = Opal.eqeq, $not = Opal.not, $eqeqeq = Opal.eqeqeq, $rb_plus = Opal.rb_plus, $rb_minus = Opal.rb_minus, $rb_gt = Opal.rb_gt;
 
-  Opal.add_stubs(['$require', '$include?', '$type', '$s', '$helper', '$push', '$compile_receiver', '$compile_method_body', '$compile_method_name', '$compile_arguments', '$compile_block_pass', '$private', '$def?', '$scope', '$find_parent_def', '$to_s', '$mid', '$def_scope', '$identify!', '$method_id', '$def_scope_identity', '$defined_check_param', '$allow_stubs', '$super_chain', '$join', '$map', '$implicit_arguments_param', '$super_method_invocation', '$iter?', '$super_block_invocation', '$raise', '$handle', '$wrap', '$uses_block!', '$compile_using_send', '$==', '$iter', '$uses_zuper=', '$-', '$block_name', '$!', '$<<', '$empty?', '$children', '$arglist', '$expr', '$===']);
+  Opal.add_stubs('require,include?,type,s,helper,push,compile_receiver,compile_method_body,compile_method_name,compile_arguments,compile_block_pass,private,def?,scope,find_parent_def,to_s,mid,def_scope,identify!,self,method_id,def_scope_identity,defined_check_param,allow_stubs,super_chain,join,map,implicit_arguments_param,super_method_invocation,iter?,super_block_invocation,raise,handle,wrap,uses_block!,compile_using_send,==,iter,block_name,implicit_arglist,!,<<,new,each,children,original_args,[],===,+,[]=,-,>,meta,empty?');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -38181,48 +34585,41 @@ Opal.modules["opal/nodes/super"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
-      (function($base, $super, $parent_nesting) {
+      (function($base, $super) {
         var self = $klass($base, $super, 'BaseSuperNode');
 
-        var $nesting = [self].concat($parent_nesting), $BaseSuperNode_initialize$1, $BaseSuperNode_compile_using_send$2, $BaseSuperNode_def_scope$3, $BaseSuperNode_defined_check_param$4, $BaseSuperNode_implicit_arguments_param$5, $BaseSuperNode_method_id$6, $BaseSuperNode_def_scope_identity$7, $BaseSuperNode_allow_stubs$8, $BaseSuperNode_super_method_invocation$9, $BaseSuperNode_super_block_invocation$10, $BaseSuperNode_compile_method_body$12, $BaseSuperNode_compile_method_name$13;
+        var $proto = self.$$prototype;
 
-        self.$$prototype.sexp = self.$$prototype.def_scope = nil;
+        $proto.sexp = $proto.def_scope = nil;
         
         
-        Opal.def(self, '$initialize', $BaseSuperNode_initialize$1 = function $$initialize($a) {
-          var $post_args, $b, $c, $iter = $BaseSuperNode_initialize$1.$$p, $yield = $iter || nil, self = this, args = nil, rest = nil, last_child = nil, $ret_or_1 = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        $def(self, '$initialize', function $$initialize($a) {
+          var $post_args, $rest_arg, $b, $c, $yield = $$initialize.$$p || nil, self = this, args = nil, rest = nil, last_child = nil;
 
-          if ($iter) $BaseSuperNode_initialize$1.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$initialize.$$p;
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
-          ;
-          $send2(self, $find_super(self, 'initialize', $BaseSuperNode_initialize$1, false, true), 'initialize', $zuper, $iter);
-          args = [].concat(Opal.to_a(self.sexp));
-          $b = [].concat(Opal.to_a(args)), $c = $b.length - 1, $c = ($c < 0) ? 0 : $c, (rest = $slice.call($b, 0, $c)), (last_child = ($b[$c] == null ? nil : $b[$c])), $b;
-          if ($truthy((function() {if ($truthy(($ret_or_1 = last_child))) {
-            return ["iter", "block_pass"]['$include?'](last_child.$type())
-          } else {
-            return $ret_or_1
-          }; return nil; })())) {
+          $post_args = Opal.slice.call(arguments);
+          
+          $rest_arg = $post_args;;
+          $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', $to_a($rest_arg), $yield);
+          args = [].concat($to_a(self.sexp));
+          $b = [].concat($to_a(args)), $c = $b.length - 1, $c = ($c < 0) ? 0 : $c, (rest = $slice.call($b, 0, $c)), (last_child = ($b[$c] == null ? nil : $b[$c])), $b;
+          if (($truthy(last_child) && ($truthy(["iter", "block_pass"]['$include?'](last_child.$type()))))) {
             
             self.iter = last_child;
             args = rest;
           } else {
             self.iter = self.$s("js_tmp", "null")
           };
-          self.arglist = $send(self, 's', ["arglist"].concat(Opal.to_a(args)));
+          self.arglist = $send(self, 's', ["arglist"].concat($to_a(args)));
           return (self.recvr = self.$s("self"));
-        }, $BaseSuperNode_initialize$1.$$arity = -1);
+        }, -1);
         
-        Opal.def(self, '$compile_using_send', $BaseSuperNode_compile_using_send$2 = function $$compile_using_send() {
+        $def(self, '$compile_using_send', function $$compile_using_send() {
           var self = this;
 
           
@@ -38234,77 +34631,65 @@ Opal.modules["opal/nodes/super"] = function(Opal) {
           self.$compile_arguments();
           self.$compile_block_pass();
           return self.$push(")");
-        }, $BaseSuperNode_compile_using_send$2.$$arity = 0);
+        }, 0);
         self.$private();
         
-        Opal.def(self, '$def_scope', $BaseSuperNode_def_scope$3 = function $$def_scope() {
-          var self = this, $ret_or_2 = nil;
+        $def(self, '$def_scope', function $$def_scope() {
+          var self = this, $ret_or_1 = nil;
 
-          return (self.def_scope = (function() {if ($truthy(($ret_or_2 = self.def_scope))) {
-            return $ret_or_2
-          } else if ($truthy(self.$scope()['$def?']())) {
-            return self.$scope()
-          } else {
-            return self.$scope().$find_parent_def()
-          }; return nil; })())
-        }, $BaseSuperNode_def_scope$3.$$arity = 0);
+          return (self.def_scope = ($truthy(($ret_or_1 = self.def_scope)) ? ($ret_or_1) : ($truthy(self.$scope()['$def?']()) ? (self.$scope()) : (self.$scope().$find_parent_def()))))
+        }, 0);
         
-        Opal.def(self, '$defined_check_param', $BaseSuperNode_defined_check_param$4 = function $$defined_check_param() {
-          var self = this;
-
+        $def(self, '$defined_check_param', function $$defined_check_param() {
+          
           return "false"
-        }, $BaseSuperNode_defined_check_param$4.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$implicit_arguments_param', $BaseSuperNode_implicit_arguments_param$5 = function $$implicit_arguments_param() {
-          var self = this;
-
+        $def(self, '$implicit_arguments_param', function $$implicit_arguments_param() {
+          
           return "false"
-        }, $BaseSuperNode_implicit_arguments_param$5.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$method_id', $BaseSuperNode_method_id$6 = function $$method_id() {
+        $def(self, '$method_id', function $$method_id() {
           var self = this;
 
           return self.$def_scope().$mid().$to_s()
-        }, $BaseSuperNode_method_id$6.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$def_scope_identity', $BaseSuperNode_def_scope_identity$7 = function $$def_scope_identity() {
+        $def(self, '$def_scope_identity', function $$def_scope_identity() {
           var self = this;
 
           return self.$def_scope()['$identify!'](self.$def_scope().$mid())
-        }, $BaseSuperNode_def_scope_identity$7.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$allow_stubs', $BaseSuperNode_allow_stubs$8 = function $$allow_stubs() {
-          var self = this;
-
+        $def(self, '$allow_stubs', function $$allow_stubs() {
+          
           return "true"
-        }, $BaseSuperNode_allow_stubs$8.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$super_method_invocation', $BaseSuperNode_super_method_invocation$9 = function $$super_method_invocation() {
+        $def(self, '$super_method_invocation', function $$super_method_invocation() {
           var self = this;
 
           
           self.$helper("find_super");
-          return "" + "$find_super(self, '" + (self.$method_id()) + "', " + (self.$def_scope_identity()) + ", " + (self.$defined_check_param()) + ", " + (self.$allow_stubs()) + ")";
-        }, $BaseSuperNode_super_method_invocation$9.$$arity = 0);
+          return "$find_super(" + (self.$scope().$self()) + ", '" + (self.$method_id()) + "', " + (self.$def_scope_identity()) + ", " + (self.$defined_check_param()) + ", " + (self.$allow_stubs()) + ")";
+        }, 0);
         
-        Opal.def(self, '$super_block_invocation', $BaseSuperNode_super_block_invocation$10 = function $$super_block_invocation() {
-          var $a, $b, $$11, self = this, chain = nil, cur_defn = nil, mid = nil, trys = nil;
+        $def(self, '$super_block_invocation', function $$super_block_invocation() {
+          var $a, $b, self = this, chain = nil, cur_defn = nil, mid = nil, trys = nil;
 
           
           self.$helper("find_block_super");
-          $b = self.$scope().$super_chain(), $a = Opal.to_ary($b), (chain = ($a[0] == null ? nil : $a[0])), (cur_defn = ($a[1] == null ? nil : $a[1])), (mid = ($a[2] == null ? nil : $a[2])), $b;
-          trys = $send(chain, 'map', [], ($$11 = function(c){var self = $$11.$$s == null ? this : $$11.$$s;
-
+          $b = self.$scope().$super_chain(), $a = $to_ary($b), (chain = ($a[0] == null ? nil : $a[0])), (cur_defn = ($a[1] == null ? nil : $a[1])), (mid = ($a[2] == null ? nil : $a[2])), $b;
+          trys = $send(chain, 'map', [], function $$1(c){
             
             
-            if (c == null) {
-              c = nil;
-            };
-            return "" + (c) + ".$$def";}, $$11.$$s = self, $$11.$$arity = 1, $$11)).$join(" || ");
-          return "" + "$find_block_super(self, " + (mid) + ", (" + (trys) + " || " + (cur_defn) + "), " + (self.$defined_check_param()) + ", " + (self.$implicit_arguments_param()) + ")";
-        }, $BaseSuperNode_super_block_invocation$10.$$arity = 0);
+            if (c == null) c = nil;;
+            return "" + (c) + ".$$def";}, 1).$join(" || ");
+          return "$find_block_super(" + (self.$scope().$self()) + ", " + (mid) + ", (" + (trys) + " || " + (cur_defn) + "), " + (self.$defined_check_param()) + ", " + (self.$implicit_arguments_param()) + ")";
+        }, 0);
         
-        Opal.def(self, '$compile_method_body', $BaseSuperNode_compile_method_body$12 = function $$compile_method_body() {
+        $def(self, '$compile_method_body', function $$compile_method_body() {
           var self = this;
 
           
@@ -38316,183 +34701,203 @@ Opal.modules["opal/nodes/super"] = function(Opal) {
           } else {
             return self.$raise("super must be called from method body or block")
           };
-        }, $BaseSuperNode_compile_method_body$12.$$arity = 0);
-        return (Opal.def(self, '$compile_method_name', $BaseSuperNode_compile_method_name$13 = function $$compile_method_name() {
+        }, 0);
+        return $def(self, '$compile_method_name', function $$compile_method_name() {
           var $a, $b, self = this, _chain = nil, _cur_defn = nil, mid = nil;
 
           if ($truthy(self.$scope()['$def?']())) {
-            return self.$push("" + ", '" + (self.$method_id()) + "'")
+            return self.$push(", '" + (self.$method_id()) + "'")
           } else if ($truthy(self.$scope()['$iter?']())) {
             
-            $b = self.$scope().$super_chain(), $a = Opal.to_ary($b), (_chain = ($a[0] == null ? nil : $a[0])), (_cur_defn = ($a[1] == null ? nil : $a[1])), (mid = ($a[2] == null ? nil : $a[2])), $b;
-            return self.$push("" + ", " + (mid));
+            $b = self.$scope().$super_chain(), $a = $to_ary($b), (_chain = ($a[0] == null ? nil : $a[0])), (_cur_defn = ($a[1] == null ? nil : $a[1])), (mid = ($a[2] == null ? nil : $a[2])), $b;
+            return self.$push(", " + (mid));
           } else {
             return nil
           }
-        }, $BaseSuperNode_compile_method_name$13.$$arity = 0), nil) && 'compile_method_name';
-      })($nesting[0], $$($nesting, 'CallNode'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('CallNode'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'DefinedSuperNode');
 
-        var $nesting = [self].concat($parent_nesting), $DefinedSuperNode_allow_stubs$14, $DefinedSuperNode_defined_check_param$15, $DefinedSuperNode_compile$16;
-
+        
         
         self.$handle("defined_super");
         
-        Opal.def(self, '$allow_stubs', $DefinedSuperNode_allow_stubs$14 = function $$allow_stubs() {
-          var self = this;
-
+        $def(self, '$allow_stubs', function $$allow_stubs() {
+          
           return "false"
-        }, $DefinedSuperNode_allow_stubs$14.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$defined_check_param', $DefinedSuperNode_defined_check_param$15 = function $$defined_check_param() {
-          var self = this;
-
+        $def(self, '$defined_check_param', function $$defined_check_param() {
+          
           return "true"
-        }, $DefinedSuperNode_defined_check_param$15.$$arity = 0);
-        return (Opal.def(self, '$compile', $DefinedSuperNode_compile$16 = function $$compile() {
+        }, 0);
+        return $def(self, '$compile', function $$compile() {
           var self = this;
 
           
           self.$compile_receiver();
           self.$compile_method_body();
           return self.$wrap("((", ") != null ? \"super\" : nil)");
-        }, $DefinedSuperNode_compile$16.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'BaseSuperNode'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('BaseSuperNode'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'SuperNode');
 
-        var $nesting = [self].concat($parent_nesting), $SuperNode_initialize$17, $SuperNode_compile$18;
-
+        
         
         self.$handle("super");
         
-        Opal.def(self, '$initialize', $SuperNode_initialize$17 = function $$initialize($a) {
-          var $post_args, $iter = $SuperNode_initialize$17.$$p, $yield = $iter || nil, self = this, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        $def(self, '$initialize', function $$initialize($a) {
+          var $post_args, $rest_arg, $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $SuperNode_initialize$17.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$initialize.$$p;
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
-          ;
-          $send2(self, $find_super(self, 'initialize', $SuperNode_initialize$17, false, true), 'initialize', $zuper, $iter);
+          $post_args = Opal.slice.call(arguments);
+          
+          $rest_arg = $post_args;;
+          $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', $to_a($rest_arg), $yield);
           if ($truthy(self.$scope()['$def?']())) {
             return self.$scope()['$uses_block!']()
           } else {
             return nil
           };
-        }, $SuperNode_initialize$17.$$arity = -1);
-        return (Opal.def(self, '$compile', $SuperNode_compile$18 = function $$compile() {
+        }, -1);
+        return $def(self, '$compile', function $$compile() {
           var self = this;
 
           return self.$compile_using_send()
-        }, $SuperNode_compile$18.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'BaseSuperNode'), $nesting);
+        }, 0);
+      })($nesting[0], $$('BaseSuperNode'));
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'ZsuperNode');
 
-        var $nesting = [self].concat($parent_nesting), $ZsuperNode_implicit_arguments_param$19, $ZsuperNode_initialize$20, $ZsuperNode_compile$21, $ZsuperNode_compile_arguments$22, $ZsuperNode_block_name$23;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
         
         self.$handle("zsuper");
         
-        Opal.def(self, '$implicit_arguments_param', $ZsuperNode_implicit_arguments_param$19 = function $$implicit_arguments_param() {
-          var self = this;
-
+        $def(self, '$implicit_arguments_param', function $$implicit_arguments_param() {
+          
           return "true"
-        }, $ZsuperNode_implicit_arguments_param$19.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$initialize', $ZsuperNode_initialize$20 = function $$initialize($a) {
-          var $post_args, $iter = $ZsuperNode_initialize$20.$$p, $yield = $iter || nil, self = this, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        $def(self, '$initialize', function $$initialize($a) {
+          var $post_args, $rest_arg, $yield = $$initialize.$$p || nil, self = this, $ret_or_1 = nil;
 
-          if ($iter) $ZsuperNode_initialize$20.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$initialize.$$p;
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
-          ;
-          $send2(self, $find_super(self, 'initialize', $ZsuperNode_initialize$20, false, true), 'initialize', $zuper, $iter);
-          if (self.$iter().$type()['$==']("iter")) {
+          $post_args = Opal.slice.call(arguments);
+          
+          $rest_arg = $post_args;;
+          $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', $to_a($rest_arg), $yield);
+          if ($eqeq(self.$iter().$type(), "iter")) {
             return nil
           } else {
             
             self.$scope()['$uses_block!']();
-            return (self.iter = self.$s("js_tmp", "$iter"));
+            return (self.iter = self.$s("js_tmp", ($truthy(($ret_or_1 = self.$scope().$block_name())) ? ($ret_or_1) : ("$yield"))));
           };
-        }, $ZsuperNode_initialize$20.$$arity = -1);
+        }, -1);
         
-        Opal.def(self, '$compile', $ZsuperNode_compile$21 = function $$compile() {
-          var self = this, $writer = nil, implicit_args = nil, $ret_or_3 = nil, block_pass = nil;
+        $def(self, '$compile', function $$compile() {
+          var self = this, implicit_args = nil, block_pass = nil;
 
           
           if ($truthy(self.$def_scope())) {
             
-            
-            $writer = [true];
-            $send(self.$def_scope(), 'uses_zuper=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];;
-            implicit_args = [self.$s("js_tmp", "$zuper")];
-            if ($truthy((function() {if ($truthy(($ret_or_3 = self.$block_name()))) {
-              return self.$iter()['$!']()
-            } else {
-              return $ret_or_3
-            }; return nil; })())) {
+            implicit_args = self.$implicit_arglist();
+            if (($truthy(self.$block_name()) && ($not(self.$iter())))) {
               
               block_pass = self.$s("block_pass", self.$s("lvar", self.$block_name()));
-              implicit_args['$<<'](block_pass);};
-            self.arglist = $send(self, 's', ["arglist"].concat(Opal.to_a(implicit_args)));};
+              implicit_args['$<<'](block_pass);
+            };
+            self.arglist = $send(self, 's', ["arglist"].concat($to_a(implicit_args)));
+          };
           return self.$compile_using_send();
-        }, $ZsuperNode_compile$21.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_arguments', $ZsuperNode_compile_arguments$22 = function $$compile_arguments() {
-          var self = this;
+        $def(self, '$implicit_arglist', function $$implicit_arglist() {
+          var self = this, args = nil, kwargs = nil, same_arg_counter = nil;
 
           
-          self.$push(", ");
-          if ($truthy(self.$arglist().$children()['$empty?']())) {
-            return self.$push("[]")
-          } else {
-            return self.$push(self.$expr(self.$arglist()))
+          args = [];
+          kwargs = [];
+          same_arg_counter = $$('Hash').$new(0);
+          $send(self.$def_scope().$original_args().$children(), 'each', [], function $$2(sexp){var self = $$2.$$s == null ? this : $$2.$$s, lvar_name = nil, $ret_or_1 = nil, arg_node = nil, $writer = nil, key_name = nil;
+
+            
+            
+            if (sexp == null) sexp = nil;;
+            lvar_name = sexp.$children()['$[]'](0);
+            if (($eqeqeq("arg", ($ret_or_1 = sexp.$type())) || ($eqeqeq("optarg", $ret_or_1)))) {
+              
+              arg_node = self.$s("lvar", lvar_name);
+              if ($eqeq(lvar_name['$[]'](0), "_")) {
+                
+                
+                $writer = [lvar_name, $rb_plus(same_arg_counter['$[]'](lvar_name), 1)];
+                $send(same_arg_counter, '[]=', $to_a($writer));
+                $writer[$rb_minus($writer["length"], 1)];;
+                if ($truthy($rb_gt(same_arg_counter['$[]'](lvar_name), 1))) {
+                  arg_node = self.$s("js_tmp", "" + (lvar_name) + "_$" + (same_arg_counter['$[]'](lvar_name)))
+                };
+              };
+              return args['$<<'](arg_node);
+            } else if ($eqeqeq("restarg", $ret_or_1)) {
+              
+              arg_node = ($truthy(lvar_name) ? (self.$s("lvar", lvar_name)) : (self.$s("js_tmp", "$rest_arg")));
+              return args['$<<'](self.$s("splat", arg_node));
+            } else if (($eqeqeq("kwarg", $ret_or_1) || ($eqeqeq("kwoptarg", $ret_or_1)))) {
+              
+              key_name = sexp.$meta()['$[]']("arg_name");
+              return kwargs['$<<'](self.$s("pair", self.$s("sym", key_name), self.$s("lvar", lvar_name)));
+            } else if ($eqeqeq("kwrestarg", $ret_or_1)) {
+              
+              arg_node = ($truthy(lvar_name) ? (self.$s("lvar", lvar_name)) : (self.$s("js_tmp", "$kw_rest_arg")));
+              return kwargs['$<<'](self.$s("kwsplat", arg_node));
+            } else {
+              return nil
+            };}, {$$arity: 1, $$s: self});
+          if (!$truthy(kwargs['$empty?']())) {
+            args['$<<']($send(self, 's', ["hash"].concat($to_a(kwargs))))
           };
-        }, $ZsuperNode_compile_arguments$22.$$arity = 0);
-        return (Opal.def(self, '$block_name', $ZsuperNode_block_name$23 = function $$block_name() {
-          var self = this, $case = nil;
+          return args;
+        }, 0);
+        return $def(self, '$block_name', function $$block_name() {
+          var self = this, $ret_or_1 = nil;
 
-          return (function() {$case = self.$def_scope();
-          if ($$$($$$($$($nesting, 'Opal'), 'Nodes'), 'IterNode')['$===']($case)) {return self.$def_scope().$block_name()}
-          else if ($$$($$$($$($nesting, 'Opal'), 'Nodes'), 'DefNode')['$===']($case)) {return self.$def_scope().$block_name()}
-          else {return self.$raise("" + "Don't know what to do with super in the scope " + (self.$def_scope()))}})()
-        }, $ZsuperNode_block_name$23.$$arity = 0), nil) && 'block_name';
-      })($nesting[0], $$($nesting, 'SuperNode'), $nesting);
+          if ($eqeqeq($$$($$$($$('Opal'), 'Nodes'), 'IterNode'), ($ret_or_1 = self.$def_scope()))) {
+            return self.$def_scope().$block_name()
+          } else if ($eqeqeq($$$($$$($$('Opal'), 'Nodes'), 'DefNode'), $ret_or_1)) {
+            return self.$def_scope().$block_name()
+          } else {
+            return self.$raise("Don't know what to do with super in the scope " + (self.$def_scope()))
+          }
+        }, 0);
+      })($nesting[0], $$('SuperNode'), $nesting);
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/version"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module;
+Opal.modules["opal/version"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $const_set = Opal.const_set;
 
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Opal');
 
     var $nesting = [self].concat($parent_nesting);
 
-    return Opal.const_set($nesting[0], 'VERSION', "1.3.0.dev")
+    return $const_set($nesting[0], 'VERSION', "1.5.0.dev")
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/top"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy;
+Opal.modules["opal/nodes/top"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $truthy = Opal.truthy, $eqeq = Opal.eqeq, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$push', '$version_comment', '$opening', '$in_scope', '$use_strict?', '$compiler', '$line', '$stmt', '$stmts', '$is_a?', '$eval?', '$add_temp', '$add_used_helpers', '$add_used_operators', '$to_vars', '$scope', '$compile_method_stubs', '$compile_irb_vars', '$compile_end_construct', '$closing', '$requirable?', '$inspect', '$module_name', '$file', '$esm?', '$returns', '$body', '$irb?', '$each', '$to_a', '$helpers', '$operator_helpers', '$[]', '$method_missing?', '$method_calls', '$join', '$map', '$empty?', '$eof_content']);
+  Opal.add_stubs('require,handle,children,top_scope=,compiler,-,[],meta,sexp,dynamic_cache_result=,push,version_comment,in_scope,==,body,s,line,use_strict?,stmt,stmts,is_a?,eval?,add_temp,add_used_helpers,to_vars,scope,compile_method_stubs,compile_irb_vars,compile_end_construct,opening,closing,await_encountered,requirable?,unshift,inspect,module_name,file,esm?,returns,irb?,each,to_a,helpers,method_missing?,method_calls,join,map,to_proc,empty?,eof_content');
   
   self.$require("pathname");
   self.$require("opal/version");
@@ -38505,86 +34910,125 @@ Opal.modules["opal/nodes/top"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'TopNode');
 
-        var $nesting = [self].concat($parent_nesting), $TopNode_compile$1, $TopNode_opening$3, $TopNode_closing$4, $TopNode_stmts$5, $TopNode_compile_irb_vars$6, $TopNode_add_used_helpers$7, $TopNode_add_used_operators$9, $TopNode_compile_method_stubs$11, $TopNode_compile_end_construct$13, $TopNode_version_comment$14;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
         
         self.$handle("top");
         self.$children("body");
         
-        Opal.def(self, '$compile', $TopNode_compile$1 = function $$compile() {
-          var $$2, self = this;
+        $def(self, '$compile', function $$compile() {
+          var self = this, $writer = nil;
 
           
+          
+          $writer = [self];
+          $send(self.$compiler(), 'top_scope=', $to_a($writer));
+          $writer[$rb_minus($writer["length"], 1)];;
+          if ($truthy(self.$sexp().$meta()['$[]']("dynamic_cache_result"))) {
+            
+            $writer = [true];
+            $send(self.$compiler(), 'dynamic_cache_result=', $to_a($writer));
+            $writer[$rb_minus($writer["length"], 1)];
+          };
           self.$push(self.$version_comment());
-          self.$opening();
-          $send(self, 'in_scope', [], ($$2 = function(){var self = $$2.$$s == null ? this : $$2.$$s, body_code = nil;
+          $send(self, 'in_scope', [], function $$1(){var self = $$1.$$s == null ? this : $$1.$$s, body_code = nil;
+            if (self.define_nesting == null) self.define_nesting = nil;
+            if (self.define_self == null) self.define_self = nil;
+            if (self.define_relative_access == null) self.define_relative_access = nil;
+            if (self.define_absolute_const == null) self.define_absolute_const = nil;
 
-            
-            if ($truthy(self.$compiler()['$use_strict?']())) {
-              self.$line("\"use strict\";")};
-            body_code = self.$stmt(self.$stmts());
-            if ($truthy(body_code['$is_a?']($$($nesting, 'Array')))) {
-            } else {
-              body_code = [body_code]
-            };
-            if ($truthy(self.$compiler()['$eval?']())) {
-              self.$add_temp("$nesting = self.$$is_a_module ? [self] : [self.$$class]")
+            if ($eqeq(self.$body(), self.$s("nil"))) {
+              return self.$line("return Opal.nil;")
             } else {
               
-              self.$add_temp("self = Opal.top");
-              self.$add_temp("$nesting = []");
-            };
-            self.$add_temp("nil = Opal.nil");
-            self.$add_temp("$$$ = Opal.$$$");
-            self.$add_temp("$$ = Opal.$$");
-            self.$add_used_helpers();
-            self.$add_used_operators();
-            self.$line(self.$scope().$to_vars());
-            self.$compile_method_stubs();
-            self.$compile_irb_vars();
-            self.$compile_end_construct();
-            return self.$line(body_code);}, $$2.$$s = self, $$2.$$arity = 0, $$2));
+              if ($truthy(self.$compiler()['$use_strict?']())) {
+                self.$line("\"use strict\";")
+              };
+              body_code = self.$stmt(self.$stmts());
+              if (!$truthy(body_code['$is_a?']($$('Array')))) {
+                body_code = [body_code]
+              };
+              if ($truthy(self.$compiler()['$eval?']())) {
+                if ($truthy(self.define_nesting)) {
+                  self.$add_temp("$nesting = self.$$is_a_module ? [self] : [self.$$class]")
+                }
+              } else {
+                
+                if ($truthy(self.define_self)) {
+                  self.$add_temp("self = Opal.top")
+                };
+                if ($truthy(self.define_nesting)) {
+                  self.$add_temp("$nesting = []")
+                };
+              };
+              if ($truthy(self.define_relative_access)) {
+                self.$add_temp("$$ = Opal.$r($nesting)")
+              };
+              self.$add_temp("nil = Opal.nil");
+              if ($truthy(self.define_absolute_const)) {
+                self.$add_temp("$$$ = Opal.$$$")
+              };
+              self.$add_used_helpers();
+              self.$line(self.$scope().$to_vars());
+              self.$compile_method_stubs();
+              self.$compile_irb_vars();
+              self.$compile_end_construct();
+              return self.$line(body_code);
+            }}, {$$arity: 0, $$s: self});
+          self.$opening();
           return self.$closing();
-        }, $TopNode_compile$1.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$opening', $TopNode_opening$3 = function $$opening() {
-          var self = this;
+        $def(self, '$opening', function $$opening() {
+          var self = this, async_prefix = nil;
 
+          
+          if ($truthy(self.$await_encountered())) {
+            async_prefix = "async "
+          };
           if ($truthy(self.$compiler()['$requirable?']())) {
-            return self.$line("" + "Opal.modules[" + ($$$($$($nesting, 'Opal'), 'Compiler').$module_name(self.$compiler().$file()).$inspect()) + "] = function(Opal) {")
+            return self.$unshift("Opal.modules[" + ($$$($$('Opal'), 'Compiler').$module_name(self.$compiler().$file()).$inspect()) + "] = " + (async_prefix) + "function(Opal) {")
           } else if ($truthy(self.$compiler()['$eval?']())) {
-            return self.$line("(function(Opal, self) {")
+            return self.$unshift("(" + (async_prefix) + "function(Opal, self) {")
           } else if ($truthy(self.$compiler()['$esm?']())) {
-            return self.$line("export default (function(Opal) {")
+            return self.$unshift("export default Opal.queue(" + (async_prefix) + "function(Opal) {")
           } else {
-            return self.$line("(function(Opal) {")
-          }
-        }, $TopNode_opening$3.$$arity = 0);
+            return self.$unshift("Opal.queue(" + (async_prefix) + "function(Opal) {")
+          };
+        }, 0);
         
-        Opal.def(self, '$closing', $TopNode_closing$4 = function $$closing() {
+        $def(self, '$closing', function $$closing() {
           var self = this;
 
           if ($truthy(self.$compiler()['$requirable?']())) {
             return self.$line("};\n")
           } else if ($truthy(self.$compiler()['$eval?']())) {
-            return self.$line("})(Opal, self)")
+            return self.$line("})(Opal, self);")
           } else {
-            return self.$line("})(Opal);\n")
+            return self.$line("});\n")
           }
-        }, $TopNode_closing$4.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$stmts', $TopNode_stmts$5 = function $$stmts() {
+        $def(self, '$stmts', function $$stmts() {
           var self = this;
 
           return self.$compiler().$returns(self.$body())
-        }, $TopNode_stmts$5.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_irb_vars', $TopNode_compile_irb_vars$6 = function $$compile_irb_vars() {
+        $def(self, '$absolute_const', function $$absolute_const() {
+          var self = this;
+
+          
+          self.define_absolute_const = true;
+          return "$$$";
+        }, 0);
+        
+        $def(self, '$compile_irb_vars', function $$compile_irb_vars() {
           var self = this;
 
           if ($truthy(self.$compiler()['$irb?']())) {
@@ -38592,92 +35036,60 @@ Opal.modules["opal/nodes/top"] = function(Opal) {
           } else {
             return nil
           }
-        }, $TopNode_compile_irb_vars$6.$$arity = 0);
-        
-        Opal.def(self, '$add_used_helpers', $TopNode_add_used_helpers$7 = function $$add_used_helpers() {
-          var $$8, self = this;
-
-          return $send(self.$compiler().$helpers().$to_a(), 'each', [], ($$8 = function(h){var self = $$8.$$s == null ? this : $$8.$$s;
-
-            
-            
-            if (h == null) {
-              h = nil;
-            };
-            return self.$add_temp("" + "$" + (h) + " = Opal." + (h));}, $$8.$$s = self, $$8.$$arity = 1, $$8))
-        }, $TopNode_add_used_helpers$7.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$add_used_operators', $TopNode_add_used_operators$9 = function $$add_used_operators() {
-          var $$10, self = this, operators = nil;
+        $def(self, '$add_used_helpers', function $$add_used_helpers() {
+          var self = this;
 
-          
-          operators = self.$compiler().$operator_helpers().$to_a();
-          return $send(operators, 'each', [], ($$10 = function(op){var self = $$10.$$s == null ? this : $$10.$$s, name = nil;
+          return $send(self.$compiler().$helpers().$to_a(), 'each', [], function $$2(h){var self = $$2.$$s == null ? this : $$2.$$s;
 
             
             
-            if (op == null) {
-              op = nil;
-            };
-            name = $$$($$$($$($nesting, 'Nodes'), 'CallNode'), 'OPERATORS')['$[]'](op);
-            self.$line("" + "function $rb_" + (name) + "(lhs, rhs) {");
-            self.$line("" + "  return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs " + (op) + " rhs : lhs['$" + (op) + "'](rhs);");
-            return self.$line("}");}, $$10.$$s = self, $$10.$$arity = 1, $$10));
-        }, $TopNode_add_used_operators$9.$$arity = 0);
+            if (h == null) h = nil;;
+            return self.$add_temp("$" + (h) + " = Opal." + (h));}, {$$arity: 1, $$s: self})
+        }, 0);
         
-        Opal.def(self, '$compile_method_stubs', $TopNode_compile_method_stubs$11 = function $$compile_method_stubs() {
-          var $$12, self = this, calls = nil, stubs = nil;
+        $def(self, '$compile_method_stubs', function $$compile_method_stubs() {
+          var self = this, calls = nil, stubs = nil;
 
           if ($truthy(self.$compiler()['$method_missing?']())) {
             
             calls = self.$compiler().$method_calls();
-            stubs = $send(calls.$to_a(), 'map', [], ($$12 = function(k){var self = $$12.$$s == null ? this : $$12.$$s;
-
-              
-              
-              if (k == null) {
-                k = nil;
-              };
-              return "" + "'$" + (k) + "'";}, $$12.$$s = self, $$12.$$arity = 1, $$12)).$join(", ");
+            stubs = $send(calls.$to_a(), 'map', [], "to_s".$to_proc()).$join(",");
             if ($truthy(stubs['$empty?']())) {
               return nil
             } else {
-              return self.$line("" + "Opal.add_stubs([" + (stubs) + "]);")
+              return self.$line("Opal.add_stubs('" + (stubs) + "');")
             };
           } else {
             return nil
           }
-        }, $TopNode_compile_method_stubs$11.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_end_construct', $TopNode_compile_end_construct$13 = function $$compile_end_construct() {
+        $def(self, '$compile_end_construct', function $$compile_end_construct() {
           var self = this, content = nil;
 
           if ($truthy((content = self.$compiler().$eof_content()))) {
             
             self.$line("var $__END__ = Opal.Object.$new();");
-            return self.$line("" + "$__END__.$read = function() { return " + (content.$inspect()) + "; };");
+            return self.$line("$__END__.$read = function() { return " + (content.$inspect()) + "; };");
           } else {
             return nil
           }
-        }, $TopNode_compile_end_construct$13.$$arity = 0);
-        return (Opal.def(self, '$version_comment', $TopNode_version_comment$14 = function $$version_comment() {
-          var self = this;
-
-          return "" + "/* Generated by Opal " + ($$$($$($nesting, 'Opal'), 'VERSION')) + " */"
-        }, $TopNode_version_comment$14.$$arity = 0), nil) && 'version_comment';
-      })($nesting[0], $$($nesting, 'ScopeNode'), $nesting)
+        }, 0);
+        return $def(self, '$version_comment', function $$version_comment() {
+          
+          return "/* Generated by Opal " + ($$$($$('Opal'), 'VERSION')) + " */"
+        }, 0);
+      })($nesting[0], $$('ScopeNode'), $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/while"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy;
+Opal.modules["opal/nodes/while"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$js_truthy', '$test', '$with_temp', '$in_while', '$compiler', '$wrap_in_closure?', '$[]=', '$while_loop', '$-', '$indent', '$stmt', '$body', '$uses_redo?', '$compile_with_redo', '$compile_without_redo', '$wrap', '$private', '$push', '$compile_while', '$while_open', '$while_close', '$line', '$[]', '$expr?', '$recv?']);
+  Opal.add_stubs('require,handle,children,js_truthy,test,with_temp,in_while,compiler,wrap_in_closure?,[]=,while_loop,-,indent,stmt,body,uses_redo?,compile_with_redo,compile_without_redo,await_encountered,scope,wrap,private,push,compile_while,while_open,while_close,line,[],expr?,recv?');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -38688,101 +35100,101 @@ Opal.modules["opal/nodes/while"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
-      (function($base, $super, $parent_nesting) {
+      (function($base, $super) {
         var self = $klass($base, $super, 'WhileNode');
 
-        var $nesting = [self].concat($parent_nesting), $WhileNode_compile$1, $WhileNode_compile_with_redo$5, $WhileNode_compile_without_redo$6, $WhileNode_compile_while$7, $WhileNode_while_open$9, $WhileNode_while_close$10, $WhileNode_uses_redo$ques$11, $WhileNode_wrap_in_closure$ques$12;
-
+        
         
         self.$handle("while");
         self.$children("test", "body");
         
-        Opal.def(self, '$compile', $WhileNode_compile$1 = function $$compile() {
-          var $$2, self = this, test_code = nil;
+        $def(self, '$compile', function $$compile() {
+          var self = this, test_code = nil;
 
           
           test_code = self.$js_truthy(self.$test());
-          $send(self, 'with_temp', [], ($$2 = function(redo_var){var self = $$2.$$s == null ? this : $$2.$$s, $$3;
+          $send(self, 'with_temp', [], function $$1(redo_var){var self = $$1.$$s == null ? this : $$1.$$s;
 
             
             
-            if (redo_var == null) {
-              redo_var = nil;
-            };
-            return $send(self.$compiler(), 'in_while', [], ($$3 = function(){var self = $$3.$$s == null ? this : $$3.$$s, $$4, $writer = nil, body_code = nil;
+            if (redo_var == null) redo_var = nil;;
+            return $send(self.$compiler(), 'in_while', [], function $$2(){var self = $$2.$$s == null ? this : $$2.$$s, $writer = nil, body_code = nil;
 
               
               if ($truthy(self['$wrap_in_closure?']())) {
                 
                 $writer = ["closure", true];
-                $send(self.$while_loop(), '[]=', Opal.to_a($writer));
-                $writer[$rb_minus($writer["length"], 1)];};
+                $send(self.$while_loop(), '[]=', $to_a($writer));
+                $writer[$rb_minus($writer["length"], 1)];
+              };
               
               $writer = ["redo_var", redo_var];
-              $send(self.$while_loop(), '[]=', Opal.to_a($writer));
+              $send(self.$while_loop(), '[]=', $to_a($writer));
               $writer[$rb_minus($writer["length"], 1)];;
-              body_code = $send(self, 'indent', [], ($$4 = function(){var self = $$4.$$s == null ? this : $$4.$$s;
+              body_code = $send(self, 'indent', [], function $$3(){var self = $$3.$$s == null ? this : $$3.$$s;
 
-                return self.$stmt(self.$body())}, $$4.$$s = self, $$4.$$arity = 0, $$4));
+                return self.$stmt(self.$body())}, {$$arity: 0, $$s: self});
               if ($truthy(self['$uses_redo?']())) {
                 return self.$compile_with_redo(test_code, body_code, redo_var)
               } else {
                 return self.$compile_without_redo(test_code, body_code)
-              };}, $$3.$$s = self, $$3.$$arity = 0, $$3));}, $$2.$$s = self, $$2.$$arity = 1, $$2));
+              };}, {$$arity: 0, $$s: self});}, {$$arity: 1, $$s: self});
           if ($truthy(self['$wrap_in_closure?']())) {
-            return self.$wrap("(function() {", "; return nil; })()")
+            if ($truthy(self.$scope().$await_encountered())) {
+              return self.$wrap("(await (async function() {", "; return nil; })())")
+            } else {
+              return self.$wrap("(function() {", "; return nil; })()")
+            }
           } else {
             return nil
           };
-        }, $WhileNode_compile$1.$$arity = 0);
+        }, 0);
         self.$private();
         
-        Opal.def(self, '$compile_with_redo', $WhileNode_compile_with_redo$5 = function $$compile_with_redo(test_code, body_code, redo_var) {
+        $def(self, '$compile_with_redo', function $$compile_with_redo(test_code, body_code, redo_var) {
           var self = this;
 
           
           self.$push("" + (redo_var) + " = false; ");
           return self.$compile_while([redo_var, " || ", test_code], ["" + (redo_var) + " = false;", body_code]);
-        }, $WhileNode_compile_with_redo$5.$$arity = 3);
+        }, 3);
         
-        Opal.def(self, '$compile_without_redo', $WhileNode_compile_without_redo$6 = function $$compile_without_redo(test_code, body_code) {
+        $def(self, '$compile_without_redo', function $$compile_without_redo(test_code, body_code) {
           var self = this;
 
           return self.$compile_while([test_code], [body_code])
-        }, $WhileNode_compile_without_redo$6.$$arity = 2);
+        }, 2);
         
-        Opal.def(self, '$compile_while', $WhileNode_compile_while$7 = function $$compile_while(test_code, body_code) {
-          var $$8, self = this;
+        $def(self, '$compile_while', function $$compile_while(test_code, body_code) {
+          var self = this;
 
           
-          $send(self, 'push', [self.$while_open()].concat(Opal.to_a(test_code)).concat([self.$while_close()]));
-          $send(self, 'indent', [], ($$8 = function(){var self = $$8.$$s == null ? this : $$8.$$s;
+          $send(self, 'push', [self.$while_open()].concat($to_a(test_code)).concat([self.$while_close()]));
+          $send(self, 'indent', [], function $$4(){var self = $$4.$$s == null ? this : $$4.$$s;
 
-            return $send(self, 'line', Opal.to_a(body_code))}, $$8.$$s = self, $$8.$$arity = 0, $$8));
+            return $send(self, 'line', $to_a(body_code))}, {$$arity: 0, $$s: self});
           return self.$line("}");
-        }, $WhileNode_compile_while$7.$$arity = 2);
+        }, 2);
         
-        Opal.def(self, '$while_open', $WhileNode_while_open$9 = function $$while_open() {
-          var self = this;
-
+        $def(self, '$while_open', function $$while_open() {
+          
           return "while ("
-        }, $WhileNode_while_open$9.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$while_close', $WhileNode_while_close$10 = function $$while_close() {
-          var self = this;
-
+        $def(self, '$while_close', function $$while_close() {
+          
           return ") {"
-        }, $WhileNode_while_close$10.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$uses_redo?', $WhileNode_uses_redo$ques$11 = function() {
+        $def(self, '$uses_redo?', function $WhileNode_uses_redo$ques$5() {
           var self = this;
 
           return self.$while_loop()['$[]']("use_redo")
-        }, $WhileNode_uses_redo$ques$11.$$arity = 0);
-        return (Opal.def(self, '$wrap_in_closure?', $WhileNode_wrap_in_closure$ques$12 = function() {
+        }, 0);
+        return $def(self, '$wrap_in_closure?', function $WhileNode_wrap_in_closure$ques$6() {
           var self = this, $ret_or_1 = nil;
 
           if ($truthy(($ret_or_1 = self['$expr?']()))) {
@@ -38790,85 +35202,73 @@ Opal.modules["opal/nodes/while"] = function(Opal) {
           } else {
             return self['$recv?']()
           }
-        }, $WhileNode_wrap_in_closure$ques$12.$$arity = 0), nil) && 'wrap_in_closure?';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'UntilNode');
 
-        var $nesting = [self].concat($parent_nesting), $UntilNode_while_open$13, $UntilNode_while_close$14;
-
+        
         
         self.$handle("until");
         self.$private();
         
-        Opal.def(self, '$while_open', $UntilNode_while_open$13 = function $$while_open() {
-          var self = this;
-
+        $def(self, '$while_open', function $$while_open() {
+          
           return "while (!("
-        }, $UntilNode_while_open$13.$$arity = 0);
-        return (Opal.def(self, '$while_close', $UntilNode_while_close$14 = function $$while_close() {
-          var self = this;
-
+        }, 0);
+        return $def(self, '$while_close', function $$while_close() {
+          
           return ")) {"
-        }, $UntilNode_while_close$14.$$arity = 0), nil) && 'while_close';
-      })($nesting[0], $$($nesting, 'WhileNode'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('WhileNode'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'WhilePostNode');
 
-        var $nesting = [self].concat($parent_nesting), $WhilePostNode_compile_while$15, $WhilePostNode_while_close$17;
-
+        
         
         self.$handle("while_post");
         self.$private();
         
-        Opal.def(self, '$compile_while', $WhilePostNode_compile_while$15 = function $$compile_while(test_code, body_code) {
-          var $$16, self = this;
+        $def(self, '$compile_while', function $$compile_while(test_code, body_code) {
+          var self = this;
 
           
           self.$push("do {");
-          $send(self, 'indent', [], ($$16 = function(){var self = $$16.$$s == null ? this : $$16.$$s;
-
-            return $send(self, 'line', Opal.to_a(body_code))}, $$16.$$s = self, $$16.$$arity = 0, $$16));
-          return $send(self, 'line', ["} ", self.$while_open()].concat(Opal.to_a(test_code)).concat([self.$while_close()]));
-        }, $WhilePostNode_compile_while$15.$$arity = 2);
-        return (Opal.def(self, '$while_close', $WhilePostNode_while_close$17 = function $$while_close() {
-          var self = this;
+          $send(self, 'indent', [], function $$7(){var self = $$7.$$s == null ? this : $$7.$$s;
 
+            return $send(self, 'line', $to_a(body_code))}, {$$arity: 0, $$s: self});
+          return $send(self, 'line', ["} ", self.$while_open()].concat($to_a(test_code)).concat([self.$while_close()]));
+        }, 2);
+        return $def(self, '$while_close', function $$while_close() {
+          
           return ");"
-        }, $WhilePostNode_while_close$17.$$arity = 0), nil) && 'while_close';
-      })($nesting[0], $$($nesting, 'WhileNode'), $nesting);
-      return (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('WhileNode'));
+      return (function($base, $super) {
         var self = $klass($base, $super, 'UntilPostNode');
 
-        var $nesting = [self].concat($parent_nesting), $UntilPostNode_while_open$18, $UntilPostNode_while_close$19;
-
+        
         
         self.$handle("until_post");
         self.$private();
         
-        Opal.def(self, '$while_open', $UntilPostNode_while_open$18 = function $$while_open() {
-          var self = this;
-
+        $def(self, '$while_open', function $$while_open() {
+          
           return "while(!("
-        }, $UntilPostNode_while_open$18.$$arity = 0);
-        return (Opal.def(self, '$while_close', $UntilPostNode_while_close$19 = function $$while_close() {
-          var self = this;
-
+        }, 0);
+        return $def(self, '$while_close', function $$while_close() {
+          
           return "));"
-        }, $UntilPostNode_while_close$19.$$arity = 0), nil) && 'while_close';
-      })($nesting[0], $$($nesting, 'WhilePostNode'), $nesting);
+        }, 0);
+      })($nesting[0], $$('WhilePostNode'));
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/hash"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $send = Opal.send, $truthy = Opal.truthy, $hash2 = Opal.hash2;
+Opal.modules["opal/nodes/hash"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $to_a = Opal.to_a, $send = Opal.send, $eqeqeq = Opal.eqeqeq, $def = Opal.def, $truthy = Opal.truthy, $eqeq = Opal.eqeq, $to_ary = Opal.to_ary, $hash2 = Opal.hash2, $rb_minus = Opal.rb_minus;
 
-  Opal.add_stubs(['$require', '$handle', '$attr_accessor', '$each', '$children', '$type', '$===', '$<<', '$[]', '$all?', '$keys', '$include?', '$has_kwsplat', '$compile_merge', '$simple_keys?', '$compile_hash2', '$compile_hash', '$helper', '$==', '$empty?', '$expr', '$s', '$each_with_index', '$push', '$wrap', '$times', '$size', '$inspect', '$to_s', '$values', '$[]=', '$-', '$join', '$value']);
+  Opal.add_stubs('require,handle,attr_accessor,each,children,===,type,<<,[],all?,keys,include?,has_kwsplat,compile_merge,simple_keys?,compile_hash2,compile_hash,helper,==,empty?,expr,s,each_with_index,push,wrap,times,size,inspect,to_s,values,[]=,-,join,value');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -38879,65 +35279,59 @@ Opal.modules["opal/nodes/hash"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
-      (function($base, $super, $parent_nesting) {
+      (function($base, $super) {
         var self = $klass($base, $super, 'HashNode');
 
-        var $nesting = [self].concat($parent_nesting), $HashNode_initialize$1, $HashNode_simple_keys$ques$3, $HashNode_compile$5, $HashNode_compile_merge$6, $HashNode_compile_hash$9, $HashNode_compile_hash2$11;
-
+        
         
         self.$handle("hash");
         self.$attr_accessor("has_kwsplat", "keys", "values");
         
-        Opal.def(self, '$initialize', $HashNode_initialize$1 = function $$initialize($a) {
-          var $post_args, $$2, $iter = $HashNode_initialize$1.$$p, $yield = $iter || nil, self = this, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        $def(self, '$initialize', function $$initialize($a) {
+          var $post_args, $rest_arg, $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $HashNode_initialize$1.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$initialize.$$p;
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
-          ;
-          $send2(self, $find_super(self, 'initialize', $HashNode_initialize$1, false, true), 'initialize', $zuper, $iter);
+          $post_args = Opal.slice.call(arguments);
+          
+          $rest_arg = $post_args;;
+          $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', $to_a($rest_arg), $yield);
           self.has_kwsplat = false;
           self.keys = [];
           self.values = [];
-          return $send(self.$children(), 'each', [], ($$2 = function(child){var self = $$2.$$s == null ? this : $$2.$$s, $case = nil;
+          return $send(self.$children(), 'each', [], function $$1(child){var self = $$1.$$s == null ? this : $$1.$$s, $ret_or_1 = nil;
             if (self.keys == null) self.keys = nil;
             if (self.values == null) self.values = nil;
 
             
             
-            if (child == null) {
-              child = nil;
-            };
-            return (function() {$case = child.$type();
-            if ("kwsplat"['$===']($case)) {return (self.has_kwsplat = true)}
-            else if ("pair"['$===']($case)) {
-            self.keys['$<<'](child.$children()['$[]'](0));
-            return self.values['$<<'](child.$children()['$[]'](1));}
-            else { return nil }})();}, $$2.$$s = self, $$2.$$arity = 1, $$2));
-        }, $HashNode_initialize$1.$$arity = -1);
+            if (child == null) child = nil;;
+            if ($eqeqeq("kwsplat", ($ret_or_1 = child.$type()))) {
+              return (self.has_kwsplat = true)
+            } else if ($eqeqeq("pair", $ret_or_1)) {
+              
+              self.keys['$<<'](child.$children()['$[]'](0));
+              return self.values['$<<'](child.$children()['$[]'](1));
+            } else {
+              return nil
+            };}, {$$arity: 1, $$s: self});
+        }, -1);
         
-        Opal.def(self, '$simple_keys?', $HashNode_simple_keys$ques$3 = function() {
-          var $$4, self = this;
-
-          return $send(self.$keys(), 'all?', [], ($$4 = function(key){var self = $$4.$$s == null ? this : $$4.$$s;
+        $def(self, '$simple_keys?', function $HashNode_simple_keys$ques$2() {
+          var self = this;
 
+          return $send(self.$keys(), 'all?', [], function $$3(key){
             
             
-            if (key == null) {
-              key = nil;
-            };
-            return ["sym", "str"]['$include?'](key.$type());}, $$4.$$s = self, $$4.$$arity = 1, $$4))
-        }, $HashNode_simple_keys$ques$3.$$arity = 0);
+            if (key == null) key = nil;;
+            return ["sym", "str"]['$include?'](key.$type());}, 1)
+        }, 0);
         
-        Opal.def(self, '$compile', $HashNode_compile$5 = function $$compile() {
+        $def(self, '$compile', function $$compile() {
           var self = this;
 
           if ($truthy(self.$has_kwsplat())) {
@@ -38947,143 +35341,120 @@ Opal.modules["opal/nodes/hash"] = function(Opal) {
           } else {
             return self.$compile_hash()
           }
-        }, $HashNode_compile$5.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_merge', $HashNode_compile_merge$6 = function $$compile_merge() {
-          var $a, $$7, $$8, self = this, result = nil, seq = nil;
+        $def(self, '$compile_merge', function $$compile_merge() {
+          var $a, self = this, result = nil, seq = nil;
 
           
           self.$helper("hash");
           $a = [[], []], (result = $a[0]), (seq = $a[1]), $a;
-          $send(self.$children(), 'each', [], ($$7 = function(child){var self = $$7.$$s == null ? this : $$7.$$s;
+          $send(self.$children(), 'each', [], function $$4(child){var self = $$4.$$s == null ? this : $$4.$$s;
 
             
             
-            if (child == null) {
-              child = nil;
-            };
-            if (child.$type()['$==']("kwsplat")) {
+            if (child == null) child = nil;;
+            if ($eqeq(child.$type(), "kwsplat")) {
               
-              if ($truthy(seq['$empty?']())) {
-              } else {
-                result['$<<'](self.$expr($send(self, 's', ["hash"].concat(Opal.to_a(seq)))))
+              if (!$truthy(seq['$empty?']())) {
+                result['$<<'](self.$expr($send(self, 's', ["hash"].concat($to_a(seq)))))
               };
               result['$<<'](self.$expr(child));
               return (seq = []);
             } else {
               return seq['$<<'](child)
-            };}, $$7.$$s = self, $$7.$$arity = 1, $$7));
-          if ($truthy(seq['$empty?']())) {
-          } else {
-            result['$<<'](self.$expr($send(self, 's', ["hash"].concat(Opal.to_a(seq)))))
+            };}, {$$arity: 1, $$s: self});
+          if (!$truthy(seq['$empty?']())) {
+            result['$<<'](self.$expr($send(self, 's', ["hash"].concat($to_a(seq)))))
           };
-          return $send(result, 'each_with_index', [], ($$8 = function(fragment, idx){var self = $$8.$$s == null ? this : $$8.$$s;
+          return $send(result, 'each_with_index', [], function $$5(fragment, idx){var self = $$5.$$s == null ? this : $$5.$$s;
 
             
             
-            if (fragment == null) {
-              fragment = nil;
-            };
+            if (fragment == null) fragment = nil;;
             
-            if (idx == null) {
-              idx = nil;
-            };
-            if (idx['$=='](0)) {
+            if (idx == null) idx = nil;;
+            if ($eqeq(idx, 0)) {
               return self.$push(fragment)
             } else {
               return self.$push(".$merge(", fragment, ")")
-            };}, $$8.$$s = self, $$8.$$arity = 2, $$8));
-        }, $HashNode_compile_merge$6.$$arity = 0);
+            };}, {$$arity: 2, $$s: self});
+        }, 0);
         
-        Opal.def(self, '$compile_hash', $HashNode_compile_hash$9 = function $$compile_hash() {
-          var $$10, self = this;
+        $def(self, '$compile_hash', function $$compile_hash() {
+          var self = this;
 
           
           self.$helper("hash");
-          $send(self.$children(), 'each_with_index', [], ($$10 = function(pair, idx){var self = $$10.$$s == null ? this : $$10.$$s, $a, $b, key = nil, value = nil;
+          $send(self.$children(), 'each_with_index', [], function $$6(pair, idx){var $a, $b, self = $$6.$$s == null ? this : $$6.$$s, key = nil, value = nil;
 
             
             
-            if (pair == null) {
-              pair = nil;
-            };
+            if (pair == null) pair = nil;;
             
-            if (idx == null) {
-              idx = nil;
-            };
-            $b = pair.$children(), $a = Opal.to_ary($b), (key = ($a[0] == null ? nil : $a[0])), (value = ($a[1] == null ? nil : $a[1])), $b;
-            if (idx['$=='](0)) {
-            } else {
+            if (idx == null) idx = nil;;
+            $b = pair.$children(), $a = $to_ary($b), (key = ($a[0] == null ? nil : $a[0])), (value = ($a[1] == null ? nil : $a[1])), $b;
+            if (!$eqeq(idx, 0)) {
               self.$push(", ")
             };
-            return self.$push(self.$expr(key), ", ", self.$expr(value));}, $$10.$$s = self, $$10.$$arity = 2, $$10));
+            return self.$push(self.$expr(key), ", ", self.$expr(value));}, {$$arity: 2, $$s: self});
           return self.$wrap("$hash(", ")");
-        }, $HashNode_compile_hash$9.$$arity = 0);
-        return (Opal.def(self, '$compile_hash2', $HashNode_compile_hash2$11 = function $$compile_hash2() {
-          var $a, $$12, $$13, self = this, hash_obj = nil, hash_keys = nil;
+        }, 0);
+        return $def(self, '$compile_hash2', function $$compile_hash2() {
+          var $a, self = this, hash_obj = nil, hash_keys = nil;
 
           
           $a = [$hash2([], {}), []], (hash_obj = $a[0]), (hash_keys = $a[1]), $a;
           self.$helper("hash2");
-          $send(self.$keys().$size(), 'times', [], ($$12 = function(idx){var self = $$12.$$s == null ? this : $$12.$$s, key = nil, $writer = nil;
+          $send(self.$keys().$size(), 'times', [], function $$7(idx){var self = $$7.$$s == null ? this : $$7.$$s, key = nil, $writer = nil;
 
             
             
-            if (idx == null) {
-              idx = nil;
-            };
+            if (idx == null) idx = nil;;
             key = self.$keys()['$[]'](idx).$children()['$[]'](0).$to_s().$inspect();
-            if ($truthy(hash_obj['$include?'](key))) {
-            } else {
+            if (!$truthy(hash_obj['$include?'](key))) {
               hash_keys['$<<'](key)
             };
             
             $writer = [key, self.$expr(self.$values()['$[]'](idx))];
-            $send(hash_obj, '[]=', Opal.to_a($writer));
-            return $writer[$rb_minus($writer["length"], 1)];;}, $$12.$$s = self, $$12.$$arity = 1, $$12));
-          $send(hash_keys, 'each_with_index', [], ($$13 = function(key, idx){var self = $$13.$$s == null ? this : $$13.$$s;
+            $send(hash_obj, '[]=', $to_a($writer));
+            return $writer[$rb_minus($writer["length"], 1)];;}, {$$arity: 1, $$s: self});
+          $send(hash_keys, 'each_with_index', [], function $$8(key, idx){var self = $$8.$$s == null ? this : $$8.$$s;
 
             
             
-            if (key == null) {
-              key = nil;
-            };
+            if (key == null) key = nil;;
             
-            if (idx == null) {
-              idx = nil;
-            };
-            if (idx['$=='](0)) {
-            } else {
+            if (idx == null) idx = nil;;
+            if (!$eqeq(idx, 0)) {
               self.$push(", ")
             };
             self.$push("" + (key) + ": ");
-            return self.$push(hash_obj['$[]'](key));}, $$13.$$s = self, $$13.$$arity = 2, $$13));
-          return self.$wrap("" + "$hash2([" + (hash_keys.$join(", ")) + "], {", "})");
-        }, $HashNode_compile_hash2$11.$$arity = 0), nil) && 'compile_hash2';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      return (function($base, $super, $parent_nesting) {
+            return self.$push(hash_obj['$[]'](key));}, {$$arity: 2, $$s: self});
+          return self.$wrap("$hash2([" + (hash_keys.$join(", ")) + "], {", "})");
+        }, 0);
+      })($nesting[0], $$('Base'));
+      return (function($base, $super) {
         var self = $klass($base, $super, 'KwSplatNode');
 
-        var $nesting = [self].concat($parent_nesting), $KwSplatNode_compile$14;
-
+        
         
         self.$handle("kwsplat");
         self.$children("value");
-        return (Opal.def(self, '$compile', $KwSplatNode_compile$14 = function $$compile() {
+        return $def(self, '$compile', function $$compile() {
           var self = this;
 
           return self.$push("Opal.to_hash(", self.$expr(self.$value()), ")")
-        }, $KwSplatNode_compile$14.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
+        }, 0);
+      })($nesting[0], $$('Base'));
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/array"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send;
+Opal.modules["opal/nodes/array"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$empty?', '$children', '$push', '$each', '$==', '$type', '$expr', '$<<', '$fragment']);
+  Opal.add_stubs('require,handle,empty?,children,push,each,==,type,expr,<<,fragment');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -39094,29 +35465,27 @@ Opal.modules["opal/nodes/array"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'ArrayNode');
 
-        var $nesting = [self].concat($parent_nesting), $ArrayNode_compile$1;
-
+        
         
         self.$handle("array");
-        return (Opal.def(self, '$compile', $ArrayNode_compile$1 = function $$compile() {
-          var $a, $$2, self = this, code = nil, work = nil, join = nil;
+        return $def(self, '$compile', function $$compile() {
+          var $a, self = this, code = nil, work = nil, join = nil;
 
           
           if ($truthy(self.$children()['$empty?']())) {
-            return self.$push("[]")};
+            return self.$push("[]")
+          };
           $a = [[], []], (code = $a[0]), (work = $a[1]), $a;
-          $send(self.$children(), 'each', [], ($$2 = function(child){var self = $$2.$$s == null ? this : $$2.$$s, splat = nil, part = nil;
+          $send(self.$children(), 'each', [], function $$1(child){var self = $$1.$$s == null ? this : $$1.$$s, splat = nil, part = nil;
 
             
             
-            if (child == null) {
-              child = nil;
-            };
+            if (child == null) child = nil;;
             splat = child.$type()['$==']("splat");
             part = self.$expr(child);
             if ($truthy(splat)) {
@@ -39139,14 +35508,12 @@ Opal.modules["opal/nodes/array"] = function(Opal) {
               return (work = []);
             } else {
               
-              if ($truthy(work['$empty?']())) {
-              } else {
+              if (!$truthy(work['$empty?']())) {
                 work['$<<'](self.$fragment(", "))
               };
               return work['$<<'](part);
-            };}, $$2.$$s = self, $$2.$$arity = 1, $$2));
-          if ($truthy(work['$empty?']())) {
-          } else {
+            };}, {$$arity: 1, $$s: self});
+          if (!$truthy(work['$empty?']())) {
             
             join = [self.$fragment("["), work, self.$fragment("]")];
             if ($truthy(code['$empty?']())) {
@@ -39156,17 +35523,16 @@ Opal.modules["opal/nodes/array"] = function(Opal) {
             };
           };
           return self.$push(code);
-        }, $ArrayNode_compile$1.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+        }, 0);
+      })($nesting[0], $$('Base'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/defined"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $slice = Opal.slice, $send = Opal.send, $range = Opal.range;
+Opal.modules["opal/nodes/defined"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $eqeqeq = Opal.eqeqeq, $eqeq = Opal.eqeq, $def = Opal.def, $truthy = Opal.truthy, $to_a = Opal.to_a, $slice = Opal.slice, $send = Opal.send, $range = Opal.range;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$type', '$value', '$===', '$push', '$inspect', '$to_s', '$==', '$size', '$[]', '$compile_defined_send', '$wrap', '$compile_defined_ivar', '$compile_defined_super', '$compile_defined_yield', '$compile_defined_xstr', '$compile_defined_const', '$compile_defined_cvar', '$compile_defined_gvar', '$compile_defined_back_ref', '$compile_defined_nth_ref', '$compile_defined_array', '$respond_to?', '$__send__', '$new_temp', '$scope', '$expr', '$wrap_with_try_catch', '$mid_to_jsid', '$compile_defined', '$compile_send_recv_doesnt_raise', '$each', '$s', '$uses_block!', '$block_name', '$find_parent_def', '$nil?', '$class_variable_owner', '$helper', '$include?', '$each_with_index']);
+  Opal.add_stubs('require,handle,children,===,type,value,push,inspect,to_s,==,[],size,compile_defined_send,wrap,compile_defined_ivar,compile_defined_super,compile_defined_yield,compile_defined_xstr,compile_defined_const,compile_defined_cvar,compile_defined_gvar,compile_defined_back_ref,compile_defined_nth_ref,compile_defined_array,respond_to?,__send__,new_temp,scope,expr,wrap_with_try_catch,mid_to_jsid,compile_defined,compile_send_recv_doesnt_raise,self,each,s,uses_block!,block_name,find_parent_def,nil?,relative_access,absolute_const,top_scope,class_variable_owner,helper,include?,each_with_index');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -39177,87 +35543,98 @@ Opal.modules["opal/nodes/defined"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'DefinedNode');
 
-        var $nesting = [self].concat($parent_nesting), $DefinedNode_compile$1, $DefinedNode_compile_defined$2, $DefinedNode_wrap_with_try_catch$3, $DefinedNode_compile_send_recv_doesnt_raise$4, $DefinedNode_compile_defined_send$5, $DefinedNode_compile_defined_ivar$7, $DefinedNode_compile_defined_super$8, $DefinedNode_compile_defined_yield$9, $DefinedNode_compile_defined_xstr$10, $DefinedNode_compile_defined_const$11, $DefinedNode_compile_defined_cvar$12, $DefinedNode_compile_defined_gvar$13, $DefinedNode_compile_defined_back_ref$14, $DefinedNode_compile_defined_nth_ref$15, $DefinedNode_compile_defined_array$16;
-
+        
         
         self.$handle("defined?");
         self.$children("value");
         
-        Opal.def(self, '$compile', $DefinedNode_compile$1 = function $$compile() {
-          var self = this, $case = nil, $ret_or_1 = nil;
+        $def(self, '$compile', function $$compile() {
+          var self = this, $ret_or_1 = nil;
 
-          return (function() {$case = self.$value().$type();
-          if ("self"['$===']($case) || "nil"['$===']($case) || "false"['$===']($case) || "true"['$===']($case)) {return self.$push(self.$value().$type().$to_s().$inspect())}
-          else if ("lvasgn"['$===']($case) || "ivasgn"['$===']($case) || "gvasgn"['$===']($case) || "cvasgn"['$===']($case) || "casgn"['$===']($case) || "op_asgn"['$===']($case) || "or_asgn"['$===']($case) || "and_asgn"['$===']($case)) {return self.$push("'assignment'")}
-          else if ("lvar"['$===']($case)) {return self.$push("'local-variable'")}
-          else if ("begin"['$===']($case)) {if ($truthy((function() {if ($truthy(($ret_or_1 = self.$value().$children().$size()['$=='](1)))) {
-            return self.$value().$children()['$[]'](0).$type()['$==']("masgn")
-          } else {
-            return $ret_or_1
-          }; return nil; })())) {
+          if (($eqeqeq("self", ($ret_or_1 = self.$value().$type())) || (($eqeqeq("nil", $ret_or_1) || (($eqeqeq("false", $ret_or_1) || ($eqeqeq("true", $ret_or_1)))))))) {
+            return self.$push(self.$value().$type().$to_s().$inspect())
+          } else if (($eqeqeq("lvasgn", $ret_or_1) || (($eqeqeq("ivasgn", $ret_or_1) || (($eqeqeq("gvasgn", $ret_or_1) || (($eqeqeq("cvasgn", $ret_or_1) || (($eqeqeq("casgn", $ret_or_1) || (($eqeqeq("op_asgn", $ret_or_1) || (($eqeqeq("or_asgn", $ret_or_1) || ($eqeqeq("and_asgn", $ret_or_1)))))))))))))))) {
             return self.$push("'assignment'")
+          } else if ($eqeqeq("lvar", $ret_or_1)) {
+            return self.$push("'local-variable'")
+          } else if ($eqeqeq("begin", $ret_or_1)) {
+            if (($eqeq(self.$value().$children().$size(), 1) && ($eqeq(self.$value().$children()['$[]'](0).$type(), "masgn")))) {
+              return self.$push("'assignment'")
+            } else {
+              return self.$push("'expression'")
+            }
+          } else if ($eqeqeq("send", $ret_or_1)) {
+            
+            self.$compile_defined_send(self.$value());
+            return self.$wrap("(", " ? 'method' : nil)");
+          } else if ($eqeqeq("ivar", $ret_or_1)) {
+            
+            self.$compile_defined_ivar(self.$value());
+            return self.$wrap("(", " ? 'instance-variable' : nil)");
+          } else if (($eqeqeq("zsuper", $ret_or_1) || ($eqeqeq("super", $ret_or_1)))) {
+            return self.$compile_defined_super()
+          } else if ($eqeqeq("yield", $ret_or_1)) {
+            
+            self.$compile_defined_yield();
+            return self.$wrap("(", " ? 'yield' : nil)");
+          } else if ($eqeqeq("xstr", $ret_or_1)) {
+            return self.$compile_defined_xstr(self.$value())
+          } else if ($eqeqeq("const", $ret_or_1)) {
+            
+            self.$compile_defined_const(self.$value());
+            return self.$wrap("(", " ? 'constant' : nil)");
+          } else if ($eqeqeq("cvar", $ret_or_1)) {
+            
+            self.$compile_defined_cvar(self.$value());
+            return self.$wrap("(", " ? 'class variable' : nil)");
+          } else if ($eqeqeq("gvar", $ret_or_1)) {
+            
+            self.$compile_defined_gvar(self.$value());
+            return self.$wrap("(", " ? 'global-variable' : nil)");
+          } else if ($eqeqeq("back_ref", $ret_or_1)) {
+            
+            self.$compile_defined_back_ref();
+            return self.$wrap("(", " ? 'global-variable' : nil)");
+          } else if ($eqeqeq("nth_ref", $ret_or_1)) {
+            
+            self.$compile_defined_nth_ref();
+            return self.$wrap("(", " ? 'global-variable' : nil)");
+          } else if ($eqeqeq("array", $ret_or_1)) {
+            
+            self.$compile_defined_array(self.$value());
+            return self.$wrap("(", " ? 'expression' : nil)");
           } else {
             return self.$push("'expression'")
-          }}
-          else if ("send"['$===']($case)) {
-          self.$compile_defined_send(self.$value());
-          return self.$wrap("(", " ? 'method' : nil)");}
-          else if ("ivar"['$===']($case)) {
-          self.$compile_defined_ivar(self.$value());
-          return self.$wrap("(", " ? 'instance-variable' : nil)");}
-          else if ("zsuper"['$===']($case) || "super"['$===']($case)) {return self.$compile_defined_super()}
-          else if ("yield"['$===']($case)) {
-          self.$compile_defined_yield();
-          return self.$wrap("(", " ? 'yield' : nil)");}
-          else if ("xstr"['$===']($case)) {return self.$compile_defined_xstr(self.$value())}
-          else if ("const"['$===']($case)) {
-          self.$compile_defined_const(self.$value());
-          return self.$wrap("(", " ? 'constant' : nil)");}
-          else if ("cvar"['$===']($case)) {
-          self.$compile_defined_cvar(self.$value());
-          return self.$wrap("(", " ? 'class variable' : nil)");}
-          else if ("gvar"['$===']($case)) {
-          self.$compile_defined_gvar(self.$value());
-          return self.$wrap("(", " ? 'global-variable' : nil)");}
-          else if ("back_ref"['$===']($case)) {
-          self.$compile_defined_back_ref();
-          return self.$wrap("(", " ? 'global-variable' : nil)");}
-          else if ("nth_ref"['$===']($case)) {
-          self.$compile_defined_nth_ref();
-          return self.$wrap("(", " ? 'global-variable' : nil)");}
-          else if ("array"['$===']($case)) {
-          self.$compile_defined_array(self.$value());
-          return self.$wrap("(", " ? 'expression' : nil)");}
-          else {return self.$push("'expression'")}})()
-        }, $DefinedNode_compile$1.$$arity = 0);
-        
-        Opal.def(self, '$compile_defined', $DefinedNode_compile_defined$2 = function $$compile_defined(node) {
+          }
+        }, 0);
+        
+        $def(self, '$compile_defined', function $$compile_defined(node) {
           var self = this, type = nil, node_tmp = nil;
 
           
           type = node.$type();
-          if ($truthy(self['$respond_to?']("" + "compile_defined_" + (type)))) {
-            return self.$__send__("" + "compile_defined_" + (type), node)
+          if ($truthy(self['$respond_to?']("compile_defined_" + (type)))) {
+            return self.$__send__("compile_defined_" + (type), node)
           } else {
             
             node_tmp = self.$scope().$new_temp();
-            self.$push("" + "(" + (node_tmp) + " = ", self.$expr(node), ")");
+            self.$push("(" + (node_tmp) + " = ", self.$expr(node), ")");
             return node_tmp;
           };
-        }, $DefinedNode_compile_defined$2.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$wrap_with_try_catch', $DefinedNode_wrap_with_try_catch$3 = function $$wrap_with_try_catch(code) {
+        $def(self, '$wrap_with_try_catch', function $$wrap_with_try_catch(code) {
           var self = this, returning_tmp = nil;
 
           
           returning_tmp = self.$scope().$new_temp();
-          self.$push("" + "(" + (returning_tmp) + " = (function() { try {");
-          self.$push("" + "  return " + (code) + ";");
+          self.$push("(" + (returning_tmp) + " = (function() { try {");
+          self.$push("  return " + (code) + ";");
           self.$push("} catch ($err) {");
           self.$push("  if (Opal.rescue($err, [Opal.Exception])) {");
           self.$push("    try {");
@@ -39266,119 +35643,116 @@ Opal.modules["opal/nodes/defined"] = function(Opal) {
           self.$push("  } else { throw $err; }");
           self.$push("}})())");
           return returning_tmp;
-        }, $DefinedNode_wrap_with_try_catch$3.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$compile_send_recv_doesnt_raise', $DefinedNode_compile_send_recv_doesnt_raise$4 = function $$compile_send_recv_doesnt_raise(recv_code) {
+        $def(self, '$compile_send_recv_doesnt_raise', function $$compile_send_recv_doesnt_raise(recv_code) {
           var self = this;
 
           return self.$wrap_with_try_catch(recv_code)
-        }, $DefinedNode_compile_send_recv_doesnt_raise$4.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$compile_defined_send', $DefinedNode_compile_defined_send$5 = function $$compile_defined_send(node) {
-          var $a, $$6, self = this, recv = nil, method_name = nil, args = nil, mid = nil, recv_code = nil, recv_tmp = nil, recv_value_tmp = nil, meth_tmp = nil;
+        $def(self, '$compile_defined_send', function $$compile_defined_send(node) {
+          var $a, self = this, recv = nil, method_name = nil, args = nil, mid = nil, recv_code = nil, recv_tmp = nil, recv_value_tmp = nil, meth_tmp = nil;
 
           
-          $a = [].concat(Opal.to_a(node)), (recv = ($a[0] == null ? nil : $a[0])), (method_name = ($a[1] == null ? nil : $a[1])), (args = $slice.call($a, 2)), $a;
+          $a = [].concat($to_a(node)), (recv = ($a[0] == null ? nil : $a[0])), (method_name = ($a[1] == null ? nil : $a[1])), (args = $slice.call($a, 2)), $a;
           mid = self.$mid_to_jsid(method_name.$to_s());
           if ($truthy(recv)) {
             
             recv_code = self.$compile_defined(recv);
             self.$push(" && ");
-            if (recv.$type()['$==']("send")) {
+            if ($eqeq(recv.$type(), "send")) {
               
               recv_code = self.$compile_send_recv_doesnt_raise(recv_code);
-              self.$push(" && ");};
+              self.$push(" && ");
+            };
             recv_tmp = self.$scope().$new_temp();
-            self.$push("" + "(" + (recv_tmp) + " = ", recv_code, "" + ", " + (recv_tmp) + ") && ");
+            self.$push("(" + (recv_tmp) + " = ", recv_code, ", " + (recv_tmp) + ") && ");
           } else {
-            recv_tmp = "self"
+            recv_tmp = self.$scope().$self()
           };
           recv_value_tmp = self.$scope().$new_temp();
-          self.$push("" + "(" + (recv_value_tmp) + " = " + (recv_tmp) + ") && ");
+          self.$push("(" + (recv_value_tmp) + " = " + (recv_tmp) + ") && ");
           meth_tmp = self.$scope().$new_temp();
-          self.$push("" + "(((" + (meth_tmp) + " = " + (recv_value_tmp) + (mid) + ") && !" + (meth_tmp) + ".$$stub)");
-          self.$push("" + " || " + (recv_value_tmp) + "['$respond_to_missing?']('" + (method_name) + "'))");
-          $send(args, 'each', [], ($$6 = function(arg){var self = $$6.$$s == null ? this : $$6.$$s, $case = nil;
+          self.$push("(((" + (meth_tmp) + " = " + (recv_value_tmp) + (mid) + ") && !" + (meth_tmp) + ".$$stub)");
+          self.$push(" || " + (recv_value_tmp) + "['$respond_to_missing?']('" + (method_name) + "'))");
+          $send(args, 'each', [], function $$1(arg){var self = $$1.$$s == null ? this : $$1.$$s, $ret_or_1 = nil;
 
             
             
-            if (arg == null) {
-              arg = nil;
-            };
-            return (function() {$case = arg.$type();
-            if ("block_pass"['$===']($case)) {return nil}
-            else {
-            self.$push(" && ");
-            return self.$compile_defined(arg);}})();}, $$6.$$s = self, $$6.$$arity = 1, $$6));
+            if (arg == null) arg = nil;;
+            if ($eqeqeq("block_pass", ($ret_or_1 = arg.$type()))) {
+              return nil
+            } else {
+              
+              self.$push(" && ");
+              return self.$compile_defined(arg);
+            };}, {$$arity: 1, $$s: self});
           self.$wrap("(", ")");
           return "" + (meth_tmp) + "()";
-        }, $DefinedNode_compile_defined_send$5.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$compile_defined_ivar', $DefinedNode_compile_defined_ivar$7 = function $$compile_defined_ivar(node) {
+        $def(self, '$compile_defined_ivar', function $$compile_defined_ivar(node) {
           var self = this, name = nil, tmp = nil;
 
           
           name = node.$children()['$[]'](0).$to_s()['$[]']($range(1, -1, false));
           tmp = self.$scope().$new_temp();
-          self.$push("" + "(" + (tmp) + " = self['" + (name) + "'], " + (tmp) + " != null && " + (tmp) + " !== nil)");
+          self.$push("(" + (tmp) + " = " + (self.$scope().$self()) + "['" + (name) + "'], " + (tmp) + " != null && " + (tmp) + " !== nil)");
           return tmp;
-        }, $DefinedNode_compile_defined_ivar$7.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$compile_defined_super', $DefinedNode_compile_defined_super$8 = function $$compile_defined_super() {
+        $def(self, '$compile_defined_super', function $$compile_defined_super() {
           var self = this;
 
           return self.$push(self.$expr(self.$s("defined_super")))
-        }, $DefinedNode_compile_defined_super$8.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_defined_yield', $DefinedNode_compile_defined_yield$9 = function $$compile_defined_yield() {
-          var self = this, block_name = nil, $ret_or_2 = nil;
+        $def(self, '$compile_defined_yield', function $$compile_defined_yield() {
+          var self = this, block_name = nil, $ret_or_1 = nil;
 
           
           self.$scope()['$uses_block!']();
-          block_name = (function() {if ($truthy(($ret_or_2 = self.$scope().$block_name()))) {
-            return $ret_or_2
-          } else {
-            return self.$scope().$find_parent_def().$block_name()
-          }; return nil; })();
-          self.$push("" + "(" + (block_name) + " != null && " + (block_name) + " !== nil)");
+          block_name = ($truthy(($ret_or_1 = self.$scope().$block_name())) ? ($ret_or_1) : (self.$scope().$find_parent_def().$block_name()));
+          self.$push("(" + (block_name) + " != null && " + (block_name) + " !== nil)");
           return block_name;
-        }, $DefinedNode_compile_defined_yield$9.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_defined_xstr', $DefinedNode_compile_defined_xstr$10 = function $$compile_defined_xstr(node) {
+        $def(self, '$compile_defined_xstr', function $$compile_defined_xstr(node) {
           var self = this;
 
           return self.$push("(typeof(", self.$expr(node), ") !== \"undefined\")")
-        }, $DefinedNode_compile_defined_xstr$10.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$compile_defined_const', $DefinedNode_compile_defined_const$11 = function $$compile_defined_const(node) {
+        $def(self, '$compile_defined_const', function $$compile_defined_const(node) {
           var $a, self = this, const_scope = nil, const_name = nil, const_tmp = nil, const_scope_tmp = nil;
 
           
-          $a = [].concat(Opal.to_a(node)), (const_scope = ($a[0] == null ? nil : $a[0])), (const_name = ($a[1] == null ? nil : $a[1])), $a;
+          $a = [].concat($to_a(node)), (const_scope = ($a[0] == null ? nil : $a[0])), (const_name = ($a[1] == null ? nil : $a[1])), $a;
           const_tmp = self.$scope().$new_temp();
           if ($truthy(const_scope['$nil?']())) {
-            self.$push("" + "(" + (const_tmp) + " = $$($nesting, '" + (const_name) + "', 'skip_raise'))")
-          } else if (const_scope['$=='](self.$s("cbase"))) {
-            self.$push("" + "(" + (const_tmp) + " = $$$('::', '" + (const_name) + "', 'skip_raise'))")
+            self.$push("(" + (const_tmp) + " = " + (self.$scope().$relative_access()) + "('" + (const_name) + "', 'skip_raise'))")
+          } else if ($eqeq(const_scope, self.$s("cbase"))) {
+            self.$push("(" + (const_tmp) + " = " + (self.$top_scope().$absolute_const()) + "('::', '" + (const_name) + "', 'skip_raise'))")
           } else {
             
             const_scope_tmp = self.$compile_defined(const_scope);
-            self.$push("" + " && (" + (const_tmp) + " = $$$(" + (const_scope_tmp) + ", '" + (const_name) + "', 'skip_raise'))");
+            self.$push(" && (" + (const_tmp) + " = " + (self.$top_scope().$absolute_const()) + "(" + (const_scope_tmp) + ", '" + (const_name) + "', 'skip_raise'))");
           };
           return const_tmp;
-        }, $DefinedNode_compile_defined_const$11.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$compile_defined_cvar', $DefinedNode_compile_defined_cvar$12 = function $$compile_defined_cvar(node) {
+        $def(self, '$compile_defined_cvar', function $$compile_defined_cvar(node) {
           var $a, self = this, cvar_name = nil, _ = nil, cvar_tmp = nil;
 
           
-          $a = [].concat(Opal.to_a(node)), (cvar_name = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $a;
+          $a = [].concat($to_a(node)), (cvar_name = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $a;
           cvar_tmp = self.$scope().$new_temp();
-          self.$push("" + "(" + (cvar_tmp) + " = " + (self.$class_variable_owner()) + ".$$cvars['" + (cvar_name) + "'], " + (cvar_tmp) + " != null)");
+          self.$push("(" + (cvar_tmp) + " = " + (self.$class_variable_owner()) + ".$$cvars['" + (cvar_name) + "'], " + (cvar_tmp) + " != null)");
           return cvar_tmp;
-        }, $DefinedNode_compile_defined_cvar$12.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$compile_defined_gvar', $DefinedNode_compile_defined_gvar$13 = function $$compile_defined_gvar(node) {
+        $def(self, '$compile_defined_gvar', function $$compile_defined_gvar(node) {
           var self = this, name = nil, gvar_temp = nil;
 
           
@@ -39386,68 +35760,56 @@ Opal.modules["opal/nodes/defined"] = function(Opal) {
           name = node.$children()['$[]'](0).$to_s()['$[]']($range(1, -1, false));
           gvar_temp = self.$scope().$new_temp();
           if ($truthy(["~", "!"]['$include?'](name))) {
-            self.$push("" + "(" + (gvar_temp) + " = ", self.$expr(node), " || true)")
+            self.$push("(" + (gvar_temp) + " = ", self.$expr(node), " || true)")
           } else {
-            self.$push("" + "(" + (gvar_temp) + " = $gvars[" + (name.$inspect()) + "], " + (gvar_temp) + " != null)")
+            self.$push("(" + (gvar_temp) + " = $gvars[" + (name.$inspect()) + "], " + (gvar_temp) + " != null)")
           };
           return gvar_temp;
-        }, $DefinedNode_compile_defined_gvar$13.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$compile_defined_back_ref', $DefinedNode_compile_defined_back_ref$14 = function $$compile_defined_back_ref() {
+        $def(self, '$compile_defined_back_ref', function $$compile_defined_back_ref() {
           var self = this, back_ref_temp = nil;
 
           
           self.$helper("gvars");
           back_ref_temp = self.$scope().$new_temp();
-          self.$push("" + "(" + (back_ref_temp) + " = $gvars['~'], " + (back_ref_temp) + " != null && " + (back_ref_temp) + " !== nil)");
+          self.$push("(" + (back_ref_temp) + " = $gvars['~'], " + (back_ref_temp) + " != null && " + (back_ref_temp) + " !== nil)");
           return back_ref_temp;
-        }, $DefinedNode_compile_defined_back_ref$14.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_defined_nth_ref', $DefinedNode_compile_defined_nth_ref$15 = function $$compile_defined_nth_ref() {
+        $def(self, '$compile_defined_nth_ref', function $$compile_defined_nth_ref() {
           var self = this, nth_ref_tmp = nil;
 
           
           self.$helper("gvars");
           nth_ref_tmp = self.$scope().$new_temp();
-          self.$push("" + "(" + (nth_ref_tmp) + " = $gvars['~'], " + (nth_ref_tmp) + " != null && " + (nth_ref_tmp) + " != nil)");
+          self.$push("(" + (nth_ref_tmp) + " = $gvars['~'], " + (nth_ref_tmp) + " != null && " + (nth_ref_tmp) + " != nil)");
           return nth_ref_tmp;
-        }, $DefinedNode_compile_defined_nth_ref$15.$$arity = 0);
-        return (Opal.def(self, '$compile_defined_array', $DefinedNode_compile_defined_array$16 = function $$compile_defined_array(node) {
-          var $$17, self = this;
+        }, 0);
+        return $def(self, '$compile_defined_array', function $$compile_defined_array(node) {
+          var self = this;
 
-          return $send(node.$children(), 'each_with_index', [], ($$17 = function(child, idx){var self = $$17.$$s == null ? this : $$17.$$s;
+          return $send(node.$children(), 'each_with_index', [], function $$2(child, idx){var self = $$2.$$s == null ? this : $$2.$$s;
 
             
             
-            if (child == null) {
-              child = nil;
-            };
+            if (child == null) child = nil;;
             
-            if (idx == null) {
-              idx = nil;
-            };
-            if (idx['$=='](0)) {
-            } else {
+            if (idx == null) idx = nil;;
+            if (!$eqeq(idx, 0)) {
               self.$push(" && ")
             };
-            return self.$compile_defined(child);}, $$17.$$s = self, $$17.$$arity = 2, $$17))
-        }, $DefinedNode_compile_defined_array$16.$$arity = 1), nil) && 'compile_defined_array';
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+            return self.$compile_defined(child);}, {$$arity: 2, $$s: self})
+        }, 1);
+      })($nesting[0], $$('Base'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/masgn"] = function(Opal) {
-  function $rb_ge(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs >= rhs : lhs['$>='](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send;
-
-  Opal.add_stubs(['$require', '$freeze', '$handle', '$children', '$new_temp', '$scope', '$==', '$type', '$rhs', '$push', '$expr', '$any?', '$size', '$compile_masgn', '$lhs', '$queue_temp', '$take_while', '$!=', '$drop', '$each_with_index', '$compile_assignment', '$empty?', '$shift', '$[]', '$helper', '$<<', '$dup', '$s', '$!', '$>=', '$updated', '$include?', '$+', '$last', '$raise']);
+Opal.modules["opal/nodes/masgn"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $const_set = Opal.const_set, $eqeq = Opal.eqeq, $truthy = Opal.truthy, $send = Opal.send, $def = Opal.def, $rb_ge = Opal.rb_ge, $not = Opal.not, $rb_plus = Opal.rb_plus;
+
+  Opal.add_stubs('require,freeze,handle,children,new_temp,scope,==,type,rhs,push,expr,any?,size,compile_masgn,lhs,helper,queue_temp,take_while,!=,drop,each_with_index,compile_assignment,empty?,shift,[],<<,dup,s,>=,!,updated,include?,+,last,raise');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -39458,89 +35820,66 @@ Opal.modules["opal/nodes/masgn"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'MassAssignNode');
 
-        var $nesting = [self].concat($parent_nesting), $MassAssignNode_compile$1, $MassAssignNode_compile_masgn$3, $MassAssignNode_compile_assignment$7;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
         
-        Opal.const_set($nesting[0], 'SIMPLE_ASSIGNMENT', ["lvasgn", "ivasgn", "lvar", "gvasgn", "cdecl", "casgn"].$freeze());
+        $const_set($nesting[0], 'SIMPLE_ASSIGNMENT', ["lvasgn", "ivasgn", "lvar", "gvasgn", "cdecl", "casgn"].$freeze());
         self.$handle("masgn");
         self.$children("lhs", "rhs");
         
-        Opal.def(self, '$compile', $MassAssignNode_compile$1 = function $$compile() {
-          var $$2, self = this, array = nil, rhs_len = nil, retval = nil;
+        $def(self, '$compile', function $$compile() {
+          var self = this, array = nil, rhs_len = nil, retval = nil;
 
           
           array = self.$scope().$new_temp();
-          if (self.$rhs().$type()['$==']("array")) {
+          if ($eqeq(self.$rhs().$type(), "array")) {
             
             self.$push("" + (array) + " = ", self.$expr(self.$rhs()));
-            rhs_len = (function() {if ($truthy($send(self.$rhs().$children(), 'any?', [], ($$2 = function(c){var self = $$2.$$s == null ? this : $$2.$$s;
-
+            rhs_len = ($truthy($send(self.$rhs().$children(), 'any?', [], function $$1(c){
               
               
-              if (c == null) {
-                c = nil;
-              };
-              return c.$type()['$==']("splat");}, $$2.$$s = self, $$2.$$arity = 1, $$2)))) {
-              return nil
-            } else {
-              return self.$rhs().$children().$size()
-            }; return nil; })();
+              if (c == null) c = nil;;
+              return c.$type()['$==']("splat");}, 1)) ? (nil) : (self.$rhs().$children().$size()));
             self.$compile_masgn(self.$lhs().$children(), array, rhs_len);
-            self.$push("" + ", " + (array));
-          } else if (self.$rhs().$type()['$==']("begin")) {
-            
-            retval = self.$scope().$new_temp();
-            self.$push("" + (retval) + " = ", self.$expr(self.$rhs()));
-            self.$push("" + ", " + (array) + " = Opal.to_ary(" + (retval) + ")");
-            self.$compile_masgn(self.$lhs().$children(), array);
-            self.$push("" + ", " + (retval));
-            self.$scope().$queue_temp(retval);
+            self.$push(", " + (array));
           } else {
             
+            self.$helper("to_ary");
             retval = self.$scope().$new_temp();
             self.$push("" + (retval) + " = ", self.$expr(self.$rhs()));
-            self.$push("" + ", " + (array) + " = Opal.to_ary(" + (retval) + ")");
+            self.$push(", " + (array) + " = $to_ary(" + (retval) + ")");
             self.$compile_masgn(self.$lhs().$children(), array);
-            self.$push("" + ", " + (retval));
+            self.$push(", " + (retval));
             self.$scope().$queue_temp(retval);
           };
           return self.$scope().$queue_temp(array);
-        }, $MassAssignNode_compile$1.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_masgn', $MassAssignNode_compile_masgn$3 = function $$compile_masgn(lhs_items, array, len) {
-          var $$4, $$5, $$6, self = this, pre_splat = nil, post_splat = nil, splat = nil, part = nil, tmp = nil;
+        $def(self, '$compile_masgn', function $$compile_masgn(lhs_items, array, len) {
+          var self = this, pre_splat = nil, post_splat = nil, splat = nil, part = nil, tmp = nil;
 
           
           
-          if (len == null) {
-            len = nil;
-          };
-          pre_splat = $send(lhs_items, 'take_while', [], ($$4 = function(child){var self = $$4.$$s == null ? this : $$4.$$s;
-
+          if (len == null) len = nil;;
+          pre_splat = $send(lhs_items, 'take_while', [], function $$2(child){
             
             
-            if (child == null) {
-              child = nil;
-            };
-            return child.$type()['$!=']("splat");}, $$4.$$s = self, $$4.$$arity = 1, $$4));
+            if (child == null) child = nil;;
+            return child.$type()['$!=']("splat");}, 1);
           post_splat = lhs_items.$drop(pre_splat.$size());
-          $send(pre_splat, 'each_with_index', [], ($$5 = function(child, idx){var self = $$5.$$s == null ? this : $$5.$$s;
+          $send(pre_splat, 'each_with_index', [], function $$3(child, idx){var self = $$3.$$s == null ? this : $$3.$$s;
 
             
             
-            if (child == null) {
-              child = nil;
-            };
+            if (child == null) child = nil;;
             
-            if (idx == null) {
-              idx = nil;
-            };
-            return self.$compile_assignment(child, array, idx, len);}, $$5.$$s = self, $$5.$$arity = 2, $$5));
+            if (idx == null) idx = nil;;
+            return self.$compile_assignment(child, array, idx, len);}, {$$arity: 2, $$s: self});
           if ($truthy(post_splat['$empty?']())) {
             return nil
           } else {
@@ -39550,7 +35889,7 @@ Opal.modules["opal/nodes/masgn"] = function(Opal) {
               if ($truthy((part = splat.$children()['$[]'](0)))) {
                 
                 self.$helper("slice");
-                part = part.$dup()['$<<'](self.$s("js_tmp", "" + "$slice.call(" + (array) + ", " + (pre_splat.$size()) + ")"));
+                part = part.$dup()['$<<'](self.$s("js_tmp", "$slice.call(" + (array) + ", " + (pre_splat.$size()) + ")"));
                 self.$push(", ");
                 return self.$push(self.$expr(part));
               } else {
@@ -39559,82 +35898,69 @@ Opal.modules["opal/nodes/masgn"] = function(Opal) {
             } else {
               
               tmp = self.$scope().$new_temp();
-              self.$push("" + ", " + (tmp) + " = " + (array) + ".length - " + (post_splat.$size()));
-              self.$push("" + ", " + (tmp) + " = (" + (tmp) + " < " + (pre_splat.$size()) + ") ? " + (pre_splat.$size()) + " : " + (tmp));
+              self.$push(", " + (tmp) + " = " + (array) + ".length - " + (post_splat.$size()));
+              self.$push(", " + (tmp) + " = (" + (tmp) + " < " + (pre_splat.$size()) + ") ? " + (pre_splat.$size()) + " : " + (tmp));
               if ($truthy((part = splat.$children()['$[]'](0)))) {
                 
                 self.$helper("slice");
-                part = part.$dup()['$<<'](self.$s("js_tmp", "" + "$slice.call(" + (array) + ", " + (pre_splat.$size()) + ", " + (tmp) + ")"));
+                part = part.$dup()['$<<'](self.$s("js_tmp", "$slice.call(" + (array) + ", " + (pre_splat.$size()) + ", " + (tmp) + ")"));
                 self.$push(", ");
-                self.$push(self.$expr(part));};
-              $send(post_splat, 'each_with_index', [], ($$6 = function(child, idx){var self = $$6.$$s == null ? this : $$6.$$s;
+                self.$push(self.$expr(part));
+              };
+              $send(post_splat, 'each_with_index', [], function $$4(child, idx){var self = $$4.$$s == null ? this : $$4.$$s;
 
                 
                 
-                if (child == null) {
-                  child = nil;
-                };
+                if (child == null) child = nil;;
                 
-                if (idx == null) {
-                  idx = nil;
-                };
-                if (idx['$=='](0)) {
+                if (idx == null) idx = nil;;
+                if ($eqeq(idx, 0)) {
                   return self.$compile_assignment(child, array, tmp)
                 } else {
                   return self.$compile_assignment(child, array, "" + (tmp) + " + " + (idx))
-                };}, $$6.$$s = self, $$6.$$arity = 2, $$6));
+                };}, {$$arity: 2, $$s: self});
               return self.$scope().$queue_temp(tmp);
             };
           };
-        }, $MassAssignNode_compile_masgn$3.$$arity = -3);
-        return (Opal.def(self, '$compile_assignment', $MassAssignNode_compile_assignment$7 = function $$compile_assignment(child, array, idx, len) {
-          var self = this, assign = nil, $ret_or_1 = nil, part = nil, tmp = nil;
+        }, -3);
+        return $def(self, '$compile_assignment', function $$compile_assignment(child, array, idx, len) {
+          var self = this, assign = nil, part = nil, tmp = nil;
 
           
           
-          if (len == null) {
-            len = nil;
-          };
-          assign = (function() {if ($truthy((function() {if ($truthy(($ret_or_1 = len['$!']()))) {
-            return $ret_or_1
-          } else {
-            return $rb_ge(idx, len)
-          }; return nil; })())) {
-            return self.$s("js_tmp", "" + "(" + (array) + "[" + (idx) + "] == null ? nil : " + (array) + "[" + (idx) + "])")
-          } else {
-            return self.$s("js_tmp", "" + (array) + "[" + (idx) + "]")
-          }; return nil; })();
+          if (len == null) len = nil;;
+          assign = (($not(len) || ($truthy($rb_ge(idx, len)))) ? (self.$s("js_tmp", "(" + (array) + "[" + (idx) + "] == null ? nil : " + (array) + "[" + (idx) + "])")) : (self.$s("js_tmp", "" + (array) + "[" + (idx) + "]")));
           part = child.$updated();
-          if ($truthy($$($nesting, 'SIMPLE_ASSIGNMENT')['$include?'](child.$type()))) {
+          if ($truthy($$('SIMPLE_ASSIGNMENT')['$include?'](child.$type()))) {
             part = part.$updated(nil, $rb_plus(part.$children(), [assign]))
-          } else if (child.$type()['$==']("send")) {
+          } else if ($eqeq(child.$type(), "send")) {
             part = part.$updated(nil, $rb_plus(part.$children(), [assign]))
-          } else if (child.$type()['$==']("attrasgn")) {
+          } else if ($eqeq(child.$type(), "attrasgn")) {
             part.$last()['$<<'](assign)
-          } else if (child.$type()['$==']("mlhs")) {
+          } else if ($eqeq(child.$type(), "mlhs")) {
             
+            self.$helper("to_ary");
             tmp = self.$scope().$new_temp();
-            self.$push("" + ", (" + (tmp) + " = Opal.to_ary(" + (assign.$children()['$[]'](0)) + ")");
+            self.$push(", (" + (tmp) + " = $to_ary(" + (assign.$children()['$[]'](0)) + ")");
             self.$compile_masgn(child.$children(), tmp);
             self.$push(")");
             self.$scope().$queue_temp(tmp);
             return nil;
           } else {
-            self.$raise("" + "Bad child node in masgn LHS: " + (child) + ". LHS: " + (self.$lhs()))
+            self.$raise("Bad child node in masgn LHS: " + (child) + ". LHS: " + (self.$lhs()))
           };
           self.$push(", ");
           return self.$push(self.$expr(part));
-        }, $MassAssignNode_compile_assignment$7.$$arity = -4), nil) && 'compile_assignment';
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+        }, -4);
+      })($nesting[0], $$('Base'), $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/arglist"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy;
+Opal.modules["opal/nodes/arglist"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy, $to_a = Opal.to_a, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$each', '$children', '$==', '$type', '$expr', '$empty?', '$<<', '$fragment', '$push']);
+  Opal.add_stubs('require,handle,each,children,==,type,expr,empty?,<<,fragment,push');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -39645,27 +35971,24 @@ Opal.modules["opal/nodes/arglist"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'ArglistNode');
 
-        var $nesting = [self].concat($parent_nesting), $ArglistNode_compile$1;
-
+        
         
         self.$handle("arglist");
-        return (Opal.def(self, '$compile', $ArglistNode_compile$1 = function $$compile() {
-          var $a, $$2, self = this, code = nil, work = nil, join = nil;
+        return $def(self, '$compile', function $$compile() {
+          var $a, self = this, code = nil, work = nil, join = nil;
 
           
           $a = [[], []], (code = $a[0]), (work = $a[1]), $a;
-          $send(self.$children(), 'each', [], ($$2 = function(current){var self = $$2.$$s == null ? this : $$2.$$s, splat = nil, arg = nil;
+          $send(self.$children(), 'each', [], function $$1(current){var self = $$1.$$s == null ? this : $$1.$$s, splat = nil, arg = nil;
 
             
             
-            if (current == null) {
-              current = nil;
-            };
+            if (current == null) current = nil;;
             splat = current.$type()['$==']("splat");
             arg = self.$expr(current);
             if ($truthy(splat)) {
@@ -39688,14 +36011,12 @@ Opal.modules["opal/nodes/arglist"] = function(Opal) {
               return (work = []);
             } else {
               
-              if ($truthy(work['$empty?']())) {
-              } else {
+              if (!$truthy(work['$empty?']())) {
                 work['$<<'](self.$fragment(", "))
               };
               return work['$<<'](arg);
-            };}, $$2.$$s = self, $$2.$$arity = 1, $$2));
-          if ($truthy(work['$empty?']())) {
-          } else {
+            };}, {$$arity: 1, $$s: self});
+          if (!$truthy(work['$empty?']())) {
             
             join = work;
             if ($truthy(code['$empty?']())) {
@@ -39704,18 +36025,17 @@ Opal.modules["opal/nodes/arglist"] = function(Opal) {
               code['$<<'](self.$fragment(".concat(["))['$<<'](join)['$<<'](self.$fragment("])"))
             };
           };
-          return $send(self, 'push', Opal.to_a(code));
-        }, $ArglistNode_compile$1.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+          return $send(self, 'push', $to_a(code));
+        }, 0);
+      })($nesting[0], $$('Base'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/x_string"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send, $range = Opal.range, $lambda = Opal.lambda;
+Opal.modules["opal/nodes/x_string"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send, $def = Opal.def, $defs = Opal.defs, $lambda = Opal.lambda, $eqeqeq = Opal.eqeqeq, $eqeq = Opal.eqeq, $not = Opal.not, $range = Opal.range;
 
-  Opal.add_stubs(['$handle', '$unpack_return', '$children', '$strip_empty_children', '$single_line?', '$compile_single_line', '$each', '$compile_child', '$recv?', '$wrap', '$push', '$private', '$type', '$===', '$source', '$expression', '$loc', '$new', '$scope', '$expr', '$raise', '$shift', '$empty?', '$s', '$==', '$strip', '$=~', '$!', '$pop', '$extract_last_value', '$rstrip', '$expr?', '$end_with?', '$warning', '$compiler', '$line', '$[]', '$size', '$none?', '$first', '$dup', '$nil?', '$any?', '$last']);
+  Opal.add_stubs('handle,unpack_return,children,strip_empty_children,single_line?,compile_single_line,each,compile_child,recv?,wrap,push,==,size,none?,type,end_with?,source,expression,loc,dup,nil?,empty?,rstrip,any?,[],first,shift,last,pop,private,===,include?,self,scope,new,expr,raise,s,strip,=~,!,extract_last_value,expr?,warning,compiler,line');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Opal');
 
@@ -39724,210 +36044,186 @@ Opal.modules["opal/nodes/x_string"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'XStringNode');
 
-        var $nesting = [self].concat($parent_nesting), $XStringNode_compile$1, $XStringNode_compile_child$3, $XStringNode_compile_single_line$4, $XStringNode_extract_last_value$6, $XStringNode_single_line$ques$7, $XStringNode_unpack_return$9, $XStringNode_strip_empty_children$10;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.should_add_semicolon = self.$$prototype.returning = nil;
+        $proto.should_add_semicolon = $proto.returning = nil;
         
         self.$handle("xstr");
         
-        Opal.def(self, '$compile', $XStringNode_compile$1 = function $$compile() {
-          var $$2, self = this, unpacked_children = nil, stripped_children = nil;
+        $def(self, '$compile', function $$compile() {
+          var self = this, unpacked_children = nil, stripped_children = nil;
 
           
           self.should_add_semicolon = false;
           unpacked_children = self.$unpack_return(self.$children());
-          stripped_children = self.$strip_empty_children(unpacked_children);
-          if ($truthy(self['$single_line?'](stripped_children))) {
+          stripped_children = $$('XStringNode').$strip_empty_children(unpacked_children);
+          if ($truthy($$('XStringNode')['$single_line?'](stripped_children))) {
             self.$compile_single_line(stripped_children)
           } else {
-            $send(unpacked_children, 'each', [], ($$2 = function(c){var self = $$2.$$s == null ? this : $$2.$$s;
+            $send(unpacked_children, 'each', [], function $$1(c){var self = $$1.$$s == null ? this : $$1.$$s;
 
               
               
-              if (c == null) {
-                c = nil;
-              };
-              return self.$compile_child(c);}, $$2.$$s = self, $$2.$$arity = 1, $$2))
+              if (c == null) c = nil;;
+              return self.$compile_child(c);}, {$$arity: 1, $$s: self})
           };
           if ($truthy(self['$recv?']())) {
-            self.$wrap("(", ")")};
+            self.$wrap("(", ")")
+          };
           if ($truthy(self.should_add_semicolon)) {
             return self.$push(";")
           } else {
             return nil
           };
-        }, $XStringNode_compile$1.$$arity = 0);
+        }, 0);
+        $defs(self, '$single_line?', function $XStringNode_single_line$ques$2(children) {
+          var $ret_or_1 = nil;
+
+          if ($truthy(($ret_or_1 = children.$size()['$=='](1)))) {
+            return $ret_or_1
+          } else {
+            return $send(children, 'none?', [], function $$3(c){var $ret_or_2 = nil;
+
+              
+              
+              if (c == null) c = nil;;
+              if ($truthy(($ret_or_2 = c.$type()['$==']("str")))) {
+                return c.$loc().$expression().$source()['$end_with?']("\n")
+              } else {
+                return $ret_or_2
+              };}, 1)
+          }
+        }, 1);
+        $defs(self, '$strip_empty_children', function $$strip_empty_children(children) {
+          var $a, empty_line = nil, $ret_or_1 = nil;
+
+          
+          children = children.$dup();
+          empty_line = $lambda(function $$4(child){var $ret_or_1 = nil, $ret_or_2 = nil;
+
+            
+            
+            if (child == null) child = nil;;
+            if ($truthy(($ret_or_1 = child['$nil?']()))) {
+              return $ret_or_1
+            } else {
+              
+              if ($truthy(($ret_or_2 = child.$type()['$==']("str")))) {
+                return child.$loc().$expression().$source().$rstrip()['$empty?']()
+              } else {
+                return $ret_or_2
+              };
+            };}, 1);
+          while ($truthy(($truthy(($ret_or_1 = children['$any?']())) ? (empty_line['$[]'](children.$first())) : ($ret_or_1)))) {
+            children.$shift()
+          };
+          while ($truthy(($truthy(($ret_or_1 = children['$any?']())) ? (empty_line['$[]'](children.$last())) : ($ret_or_1)))) {
+            children.$pop()
+          };
+          return children;
+        }, 1);
         self.$private();
         
-        Opal.def(self, '$compile_child', $XStringNode_compile_child$3 = function $$compile_child(child) {
-          var self = this, $case = nil, value = nil;
+        $def(self, '$compile_child', function $$compile_child(child) {
+          var self = this, $ret_or_1 = nil, value = nil;
 
-          return (function() {$case = child.$type();
-          if ("str"['$===']($case)) {
-          value = child.$loc().$expression().$source();
-          return self.$push($$($nesting, 'Fragment').$new(value, self.$scope(), child));}
-          else if ("begin"['$===']($case) || "gvar"['$===']($case) || "ivar"['$===']($case) || "nil"['$===']($case)) {return self.$push(self.$expr(child))}
-          else {return self.$raise("" + "Unsupported xstr part: " + (child.$type()))}})()
-        }, $XStringNode_compile_child$3.$$arity = 1);
+          if ($eqeqeq("str", ($ret_or_1 = child.$type()))) {
+            
+            value = child.$loc().$expression().$source();
+            if ($truthy(value['$include?']("self"))) {
+              self.$scope().$self()
+            };
+            return self.$push($$('Fragment').$new(value, self.$scope(), child));
+          } else if (($eqeqeq("begin", $ret_or_1) || (($eqeqeq("gvar", $ret_or_1) || (($eqeqeq("ivar", $ret_or_1) || ($eqeqeq("nil", $ret_or_1)))))))) {
+            return self.$push(self.$expr(child))
+          } else {
+            return self.$raise("Unsupported xstr part: " + (child.$type()))
+          }
+        }, 1);
         
-        Opal.def(self, '$compile_single_line', $XStringNode_compile_single_line$4 = function $$compile_single_line(children) {
-          var $$5, self = this, has_embeded_return = nil, first_child = nil, single_child = nil, $ret_or_1 = nil, first_value = nil, $ret_or_2 = nil, last_child = nil, $ret_or_3 = nil, last_value = nil;
+        $def(self, '$compile_single_line', function $$compile_single_line(children) {
+          var self = this, has_embeded_return = nil, first_child = nil, single_child = nil, $ret_or_1 = nil, first_value = nil, last_child = nil, last_value = nil;
 
           
           has_embeded_return = false;
           first_child = children.$shift();
           single_child = children['$empty?']();
-          first_child = (function() {if ($truthy(($ret_or_1 = first_child))) {
-            return $ret_or_1
-          } else {
-            return self.$s("nil")
-          }; return nil; })();
-          if (first_child.$type()['$==']("str")) {
+          first_child = ($truthy(($ret_or_1 = first_child)) ? ($ret_or_1) : (self.$s("nil")));
+          if ($eqeq(first_child.$type(), "str")) {
             
             first_value = first_child.$loc().$expression().$source().$strip();
-            has_embeded_return = first_value['$=~'](/^return\b/);};
-          if ($truthy((function() {if ($truthy(($ret_or_2 = self.returning))) {
-            return has_embeded_return['$!']()
-          } else {
-            return $ret_or_2
-          }; return nil; })())) {
-            self.$push("return ")};
-          last_child = (function() {if ($truthy(($ret_or_3 = children.$pop()))) {
-            return $ret_or_3
-          } else {
-            return first_child
-          }; return nil; })();
-          if (last_child.$type()['$==']("str")) {
-            last_value = self.$extract_last_value(last_child)};
-          if ($truthy(single_child)) {
-          } else {
+            has_embeded_return = first_value['$=~'](/^return\b/);
+          };
+          if (($truthy(self.returning) && ($not(has_embeded_return)))) {
+            self.$push("return ")
+          };
+          last_child = ($truthy(($ret_or_1 = children.$pop())) ? ($ret_or_1) : (first_child));
+          if ($eqeq(last_child.$type(), "str")) {
+            last_value = self.$extract_last_value(last_child)
+          };
+          if (!$truthy(single_child)) {
             
             self.should_add_semicolon = false;
             self.$compile_child(first_child);
-            $send(children, 'each', [], ($$5 = function(c){var self = $$5.$$s == null ? this : $$5.$$s;
+            $send(children, 'each', [], function $$5(c){var self = $$5.$$s == null ? this : $$5.$$s;
 
               
               
-              if (c == null) {
-                c = nil;
-              };
-              return self.$compile_child(c);}, $$5.$$s = self, $$5.$$arity = 1, $$5));
+              if (c == null) c = nil;;
+              return self.$compile_child(c);}, {$$arity: 1, $$s: self});
           };
-          if (last_child.$type()['$==']("str")) {
-            return self.$push($$($nesting, 'Fragment').$new(last_value, self.$scope(), last_child))
+          if ($eqeq(last_child.$type(), "str")) {
+            return self.$push($$('Fragment').$new(last_value, self.$scope(), last_child))
           } else {
             return self.$compile_child(last_child)
           };
-        }, $XStringNode_compile_single_line$4.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$extract_last_value', $XStringNode_extract_last_value$6 = function $$extract_last_value(last_child) {
-          var self = this, last_value = nil, $ret_or_4 = nil, $ret_or_5 = nil;
+        $def(self, '$extract_last_value', function $$extract_last_value(last_child) {
+          var self = this, last_value = nil;
 
           
           last_value = last_child.$loc().$expression().$source().$rstrip();
-          if ($truthy((function() {if ($truthy(($ret_or_4 = (function() {if ($truthy(($ret_or_5 = self.returning))) {
-            return $ret_or_5
-          } else {
-            return self['$expr?']()
-          }; return nil; })()))) {
-            return last_value['$end_with?'](";")
-          } else {
-            return $ret_or_4
-          }; return nil; })())) {
+          if ($truthy(last_value['$include?']("self"))) {
+            self.$scope().$self()
+          };
+          if ((($truthy(self.returning) || ($truthy(self['$expr?']()))) && ($truthy(last_value['$end_with?'](";"))))) {
             
-            self.$compiler().$warning("Removed semicolon ending x-string expression, interpreted as unintentional", last_child.$line());
-            last_value = last_value['$[]']($range(0, -2, false));};
-          if ($truthy(self.returning)) {
-            self.should_add_semicolon = true};
-          return last_value;
-        }, $XStringNode_extract_last_value$6.$$arity = 1);
-        
-        Opal.def(self, '$single_line?', $XStringNode_single_line$ques$7 = function(children) {
-          var $$8, self = this, $ret_or_6 = nil;
-
-          if ($truthy(($ret_or_6 = children.$size()['$=='](1)))) {
-            return $ret_or_6
-          } else {
-            return $send(children, 'none?', [], ($$8 = function(c){var self = $$8.$$s == null ? this : $$8.$$s, $ret_or_7 = nil;
-
-              
-              
-              if (c == null) {
-                c = nil;
-              };
-              if ($truthy(($ret_or_7 = c.$type()['$==']("str")))) {
-                return c.$loc().$expression().$source()['$end_with?']("\n")
-              } else {
-                return $ret_or_7
-              };}, $$8.$$s = self, $$8.$$arity = 1, $$8))
-          }
-        }, $XStringNode_single_line$ques$7.$$arity = 1);
-        
-        Opal.def(self, '$unpack_return', $XStringNode_unpack_return$9 = function $$unpack_return(children) {
+            self.$compiler().$warning("Removed semicolon ending x-string expression, interpreted as unintentional", last_child.$line());
+            last_value = last_value['$[]']($range(0, -2, false));
+          };
+          if ($truthy(self.returning)) {
+            self.should_add_semicolon = true
+          };
+          return last_value;
+        }, 1);
+        return $def(self, '$unpack_return', function $$unpack_return(children) {
           var self = this, first_child = nil;
 
           
           first_child = children.$first();
           self.returning = false;
-          if (first_child.$type()['$==']("js_return")) {
+          if ($eqeq(first_child.$type(), "js_return")) {
             
             self.returning = true;
-            children = first_child.$children();};
-          return children;
-        }, $XStringNode_unpack_return$9.$$arity = 1);
-        return (Opal.def(self, '$strip_empty_children', $XStringNode_strip_empty_children$10 = function $$strip_empty_children(children) {
-          var $$11, $a, self = this, empty_line = nil, $ret_or_10 = nil, $ret_or_11 = nil;
-
-          
-          children = children.$dup();
-          empty_line = $lambda(($$11 = function(child){var self = $$11.$$s == null ? this : $$11.$$s, $ret_or_8 = nil, $ret_or_9 = nil;
-
-            
-            
-            if (child == null) {
-              child = nil;
-            };
-            if ($truthy(($ret_or_8 = child['$nil?']()))) {
-              return $ret_or_8
-            } else {
-              
-              if ($truthy(($ret_or_9 = child.$type()['$==']("str")))) {
-                return child.$loc().$expression().$source().$rstrip()['$empty?']()
-              } else {
-                return $ret_or_9
-              };
-            };}, $$11.$$s = self, $$11.$$arity = 1, $$11));
-          while ($truthy((function() {if ($truthy(($ret_or_10 = children['$any?']()))) {
-            return empty_line['$[]'](children.$first())
-          } else {
-            return $ret_or_10
-          }; return nil; })())) {
-            children.$shift()
-          };
-          while ($truthy((function() {if ($truthy(($ret_or_11 = children['$any?']()))) {
-            return empty_line['$[]'](children.$last())
-          } else {
-            return $ret_or_11
-          }; return nil; })())) {
-            children.$pop()
+            children = first_child.$children();
           };
           return children;
-        }, $XStringNode_strip_empty_children$10.$$arity = 1), nil) && 'strip_empty_children';
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+        }, 1);
+      })($nesting[0], $$('Base'), $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/lambda"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send;
+Opal.modules["opal/nodes/lambda"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$helper', '$defines_lambda', '$scope', '$push', '$expr', '$iter']);
+  Opal.add_stubs('require,handle,children,helper,defines_lambda,scope,push,expr,iter');
   
   self.$require("opal/nodes/call");
   return (function($base, $parent_nesting) {
@@ -39938,35 +36234,33 @@ Opal.modules["opal/nodes/lambda"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'LambdaNode');
 
-        var $nesting = [self].concat($parent_nesting), $LambdaNode_compile$1;
-
+        
         
         self.$handle("lambda");
         self.$children("iter");
-        return (Opal.def(self, '$compile', $LambdaNode_compile$1 = function $$compile() {
-          var $$2, self = this;
+        return $def(self, '$compile', function $$compile() {
+          var self = this;
 
           
           self.$helper("lambda");
-          return $send(self.$scope(), 'defines_lambda', [], ($$2 = function(){var self = $$2.$$s == null ? this : $$2.$$s;
+          return $send(self.$scope(), 'defines_lambda', [], function $$1(){var self = $$1.$$s == null ? this : $$1.$$s;
 
-            return self.$push("$lambda(", self.$expr(self.$iter()), ")")}, $$2.$$s = self, $$2.$$arity = 0, $$2));
-        }, $LambdaNode_compile$1.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+            return self.$push("$lambda(", self.$expr(self.$iter()), ")")}, {$$arity: 0, $$s: self});
+        }, 0);
+      })($nesting[0], $$('Base'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$;
+Opal.modules["opal/nodes"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, nil = Opal.nil;
 
-  Opal.add_stubs(['$require']);
+  Opal.add_stubs('require');
   
   self.$require("opal/nodes/base");
   self.$require("opal/nodes/literal");
@@ -39988,7 +36282,6 @@ Opal.modules["opal/nodes"] = function(Opal) {
   self.$require("opal/nodes/definitions");
   self.$require("opal/nodes/yield");
   self.$require("opal/nodes/rescue");
-  self.$require("opal/nodes/case");
   self.$require("opal/nodes/super");
   self.$require("opal/nodes/top");
   self.$require("opal/nodes/while");
@@ -40001,11 +36294,10 @@ Opal.modules["opal/nodes"] = function(Opal) {
   return self.$require("opal/nodes/lambda");
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/eof_content"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send, $range = Opal.range;
+Opal.modules["opal/eof_content"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $const_set = Opal.const_set, $def = Opal.def, $truthy = Opal.truthy, $send = Opal.send, $eqeq = Opal.eqeq, $range = Opal.range, $to_ary = Opal.to_ary;
 
-  Opal.add_stubs(['$empty?', '$[]', '$last_token_position', '$drop_while', '$lines', '$==', '$join', '$private', '$last', '$end_pos']);
+  Opal.add_stubs('empty?,[],last_token_position,drop_while,lines,==,join,private,last,end_pos');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Opal');
 
@@ -40014,329 +36306,259 @@ Opal.modules["opal/eof_content"] = function(Opal) {
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'EofContent');
 
-      var $nesting = [self].concat($parent_nesting), $EofContent_initialize$1, $EofContent_eof$2, $EofContent_last_token_position$4;
+      var $nesting = [self].concat($parent_nesting), $proto = self.$$prototype;
 
-      self.$$prototype.tokens = self.$$prototype.source = nil;
+      $proto.tokens = $proto.source = nil;
       
-      Opal.const_set($nesting[0], 'DATA_SEPARATOR', "__END__\n");
+      $const_set($nesting[0], 'DATA_SEPARATOR', "__END__\n");
       
-      Opal.def(self, '$initialize', $EofContent_initialize$1 = function $$initialize(tokens, source) {
+      $def(self, '$initialize', function $$initialize(tokens, source) {
         var self = this;
 
         
         self.tokens = tokens;
         return (self.source = source);
-      }, $EofContent_initialize$1.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$eof', $EofContent_eof$2 = function $$eof() {
-        var $$3, self = this, eof_content = nil, $ret_or_1 = nil;
+      $def(self, '$eof', function $$eof() {
+        var self = this, eof_content = nil, $ret_or_1 = nil;
 
         
         if ($truthy(self.tokens['$empty?']())) {
-          return nil};
+          return nil
+        };
         eof_content = self.source['$[]'](Opal.Range.$new(self.$last_token_position(), -1, false));
-        if ($truthy(eof_content)) {
-        } else {
+        if (!$truthy(eof_content)) {
           return nil
         };
-        eof_content = $send(eof_content.$lines(), 'drop_while', [], ($$3 = function(line){var self = $$3.$$s == null ? this : $$3.$$s;
-
+        eof_content = $send(eof_content.$lines(), 'drop_while', [], function $$1(line){
           
           
-          if (line == null) {
-            line = nil;
-          };
-          return line['$==']("\n");}, $$3.$$s = self, $$3.$$arity = 1, $$3));
-        if (eof_content['$[]'](0)['$==']("__END__\n")) {
+          if (line == null) line = nil;;
+          return line['$==']("\n");}, 1);
+        if ($eqeq(eof_content['$[]'](0), "__END__\n")) {
           
-          eof_content = (function() {if ($truthy(($ret_or_1 = eof_content['$[]']($range(1, -1, false))))) {
-            return $ret_or_1
-          } else {
-            return []
-          }; return nil; })();
+          eof_content = ($truthy(($ret_or_1 = eof_content['$[]']($range(1, -1, false)))) ? ($ret_or_1) : ([]));
           return eof_content.$join();
-        } else if (eof_content['$=='](["__END__"])) {
+        } else if ($eqeq(eof_content, ["__END__"])) {
           return ""
         } else {
           return nil
         };
-      }, $EofContent_eof$2.$$arity = 0);
+      }, 0);
       self.$private();
-      return (Opal.def(self, '$last_token_position', $EofContent_last_token_position$4 = function $$last_token_position() {
+      return $def(self, '$last_token_position', function $$last_token_position() {
         var $a, $b, self = this, _ = nil, last_token_info = nil, last_token_range = nil;
 
         
-        $b = self.tokens.$last(), $a = Opal.to_ary($b), (_ = ($a[0] == null ? nil : $a[0])), (last_token_info = ($a[1] == null ? nil : $a[1])), $b;
-        $b = last_token_info, $a = Opal.to_ary($b), (_ = ($a[0] == null ? nil : $a[0])), (last_token_range = ($a[1] == null ? nil : $a[1])), $b;
+        $b = self.tokens.$last(), $a = $to_ary($b), (_ = ($a[0] == null ? nil : $a[0])), (last_token_info = ($a[1] == null ? nil : $a[1])), $b;
+        $b = last_token_info, $a = $to_ary($b), (_ = ($a[0] == null ? nil : $a[0])), (last_token_range = ($a[1] == null ? nil : $a[1])), $b;
         return last_token_range.$end_pos();
-      }, $EofContent_last_token_position$4.$$arity = 0), nil) && 'last_token_position';
+      }, 0);
     })($nesting[0], null, $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/errors"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $truthy = Opal.truthy, $send = Opal.send, $alias = Opal.alias;
-
-  Opal.add_stubs(['$attr_reader', '$attr_accessor', '$new', '$respond_to?', '$location', '$location=', '$-', '$diagnostic', '$diagnostic=', '$to_a', '$backtrace', '$unshift', '$to_s', '$set_backtrace', '$path', '$lineno', '$+', '$label', '$line', '$lineno=', '$source_line', '$label=', '$expression']);
+Opal.modules["opal/errors"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def, $truthy = Opal.truthy, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $defs = Opal.defs, $rb_plus = Opal.rb_plus, $alias = Opal.alias;
+
+  Opal.add_stubs('attr_reader,attr_accessor,new,respond_to?,location,location=,-,diagnostic,diagnostic=,to_a,backtrace,unshift,to_s,set_backtrace,path,lineno,+,label,line,lineno=,source_line,label=,expression');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Opal');
 
-    var $nesting = [self].concat($parent_nesting), $Opal_opal_location_from_error$2, $Opal_add_opal_location_to_error$3;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
-    (function($base, $super, $parent_nesting) {
-      var self = $klass($base, $super, 'Error');
-
-      var $nesting = [self].concat($parent_nesting);
-
-      return nil
-    })($nesting[0], $$($nesting, 'StandardError'), $nesting);
-    (function($base, $super, $parent_nesting) {
+    $klass($nesting[0], $$('StandardError'), 'Error');
+    (function($base, $super) {
       var self = $klass($base, $super, 'GemNotFound');
 
-      var $nesting = [self].concat($parent_nesting), $GemNotFound_initialize$1;
-
+      
       
       self.$attr_reader("gem_name");
-      return (Opal.def(self, '$initialize', $GemNotFound_initialize$1 = function $$initialize(gem_name) {
-        var $iter = $GemNotFound_initialize$1.$$p, $yield = $iter || nil, self = this;
+      return $def(self, '$initialize', function $$initialize(gem_name) {
+        var $yield = $$initialize.$$p || nil, self = this;
 
-        if ($iter) $GemNotFound_initialize$1.$$p = null;
+        delete $$initialize.$$p;
         
         self.gem_name = gem_name;
-        return $send2(self, $find_super(self, 'initialize', $GemNotFound_initialize$1, false, true), 'initialize', ["" + "can't find gem " + (gem_name)], null);
-      }, $GemNotFound_initialize$1.$$arity = 1), nil) && 'initialize';
-    })($nesting[0], $$($nesting, 'Error'), $nesting);
-    (function($base, $super, $parent_nesting) {
+        return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', ["can't find gem " + (gem_name)], null);
+      }, 1);
+    })($nesting[0], $$('Error'));
+    (function($base, $super) {
       var self = $klass($base, $super, 'CompilationError');
 
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("location")
-    })($nesting[0], $$($nesting, 'Error'), $nesting);
-    (function($base, $super, $parent_nesting) {
-      var self = $klass($base, $super, 'ParsingError');
-
-      var $nesting = [self].concat($parent_nesting);
-
-      return nil
-    })($nesting[0], $$($nesting, 'CompilationError'), $nesting);
-    (function($base, $super, $parent_nesting) {
-      var self = $klass($base, $super, 'RewritingError');
-
-      var $nesting = [self].concat($parent_nesting);
-
-      return nil
-    })($nesting[0], $$($nesting, 'ParsingError'), $nesting);
-    (function($base, $super, $parent_nesting) {
+    })($nesting[0], $$('Error'));
+    $klass($nesting[0], $$('CompilationError'), 'ParsingError');
+    $klass($nesting[0], $$('ParsingError'), 'RewritingError');
+    (function($base, $super) {
       var self = $klass($base, $super, 'SyntaxError');
 
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("location")
-    })($nesting[0], $$$('::', 'SyntaxError'), $nesting);
-    Opal.defs(self, '$opal_location_from_error', $Opal_opal_location_from_error$2 = function $$opal_location_from_error(error) {
-      var self = this, opal_location = nil, $writer = nil;
+    })($nesting[0], $$$('SyntaxError'));
+    $defs(self, '$opal_location_from_error', function $$opal_location_from_error(error) {
+      var opal_location = nil, $writer = nil;
 
       
-      opal_location = $$($nesting, 'OpalBacktraceLocation').$new();
+      opal_location = $$('OpalBacktraceLocation').$new();
       if ($truthy(error['$respond_to?']("location"))) {
         
         $writer = [error.$location()];
-        $send(opal_location, 'location=', Opal.to_a($writer));
-        $writer[$rb_minus($writer["length"], 1)];};
+        $send(opal_location, 'location=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];
+      };
       if ($truthy(error['$respond_to?']("diagnostic"))) {
         
         $writer = [error.$diagnostic()];
-        $send(opal_location, 'diagnostic=', Opal.to_a($writer));
-        $writer[$rb_minus($writer["length"], 1)];};
+        $send(opal_location, 'diagnostic=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];
+      };
       return opal_location;
-    }, $Opal_opal_location_from_error$2.$$arity = 1);
-    Opal.defs(self, '$add_opal_location_to_error', $Opal_add_opal_location_to_error$3 = function $$add_opal_location_to_error(opal_location, error) {
-      var self = this, backtrace = nil;
+    }, 1);
+    $defs(self, '$add_opal_location_to_error', function $$add_opal_location_to_error(opal_location, error) {
+      var backtrace = nil;
 
       
       backtrace = error.$backtrace().$to_a();
       backtrace.$unshift(opal_location.$to_s());
       error.$set_backtrace(backtrace);
       return error;
-    }, $Opal_add_opal_location_to_error$3.$$arity = 2);
-    return (function($base, $super, $parent_nesting) {
+    }, 2);
+    return (function($base, $super) {
       var self = $klass($base, $super, 'OpalBacktraceLocation');
 
-      var $nesting = [self].concat($parent_nesting), $OpalBacktraceLocation_initialize$4, $OpalBacktraceLocation_to_s$5, $OpalBacktraceLocation_diagnostic$eq$6, $OpalBacktraceLocation_location$eq$7;
-
+      
       
       self.$attr_accessor("path", "lineno", "label");
       
-      Opal.def(self, '$initialize', $OpalBacktraceLocation_initialize$4 = function $$initialize(path, lineno, label) {
+      $def(self, '$initialize', function $$initialize(path, lineno, label) {
         var $a, self = this;
 
         
         
-        if (path == null) {
-          path = nil;
-        };
+        if (path == null) path = nil;;
         
-        if (lineno == null) {
-          lineno = nil;
-        };
+        if (lineno == null) lineno = nil;;
         
-        if (label == null) {
-          label = nil;
-        };
+        if (label == null) label = nil;;
         return $a = [path, lineno, label], (self.path = $a[0]), (self.lineno = $a[1]), (self.label = $a[2]), $a;
-      }, $OpalBacktraceLocation_initialize$4.$$arity = -1);
+      }, -1);
       
-      Opal.def(self, '$to_s', $OpalBacktraceLocation_to_s$5 = function $$to_s() {
+      $def(self, '$to_s', function $$to_s() {
         var self = this, string = nil;
 
         
         string = self.$path();
         if ($truthy(self.$lineno())) {
-          string = $rb_plus(string, "" + ":" + (self.$lineno()))};
+          string = $rb_plus(string, ":" + (self.$lineno()))
+        };
         string = $rb_plus(string, ":in ");
         if ($truthy(self.$label())) {
-          string = $rb_plus(string, "" + "`" + (self.$label()) + "'")
+          string = $rb_plus(string, "`" + (self.$label()) + "'")
         } else {
           string = $rb_plus(string, "unknown")
         };
         return string;
-      }, $OpalBacktraceLocation_to_s$5.$$arity = 0);
+      }, 0);
       $alias(self, "line", "lineno");
       
-      Opal.def(self, '$diagnostic=', $OpalBacktraceLocation_diagnostic$eq$6 = function(diagnostic) {
+      $def(self, '$diagnostic=', function $OpalBacktraceLocation_diagnostic$eq$1(diagnostic) {
         var self = this, $writer = nil;
 
         
-        if ($truthy(diagnostic)) {
-        } else {
+        if (!$truthy(diagnostic)) {
           return nil
         };
         
         $writer = [diagnostic.$location()];
-        $send(self, 'location=', Opal.to_a($writer));
+        $send(self, 'location=', $to_a($writer));
         return $writer[$rb_minus($writer["length"], 1)];;
-      }, $OpalBacktraceLocation_diagnostic$eq$6.$$arity = 1);
-      return (Opal.def(self, '$location=', $OpalBacktraceLocation_location$eq$7 = function(location) {
+      }, 1);
+      return $def(self, '$location=', function $OpalBacktraceLocation_location$eq$2(location) {
         var self = this, $writer = nil;
 
         
-        if ($truthy(location)) {
-        } else {
+        if (!$truthy(location)) {
           return nil
         };
         
         $writer = [location.$line()];
-        $send(self, 'lineno=', Opal.to_a($writer));
+        $send(self, 'lineno=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         if ($truthy(location['$respond_to?']("source_line"))) {
           
           $writer = [location.$source_line()];
-          $send(self, 'label=', Opal.to_a($writer));
+          $send(self, 'label=', $to_a($writer));
           return $writer[$rb_minus($writer["length"], 1)];
         } else if ($truthy(location['$respond_to?']("expression"))) {
           
           $writer = [location.$expression().$source_line()];
-          $send(self, 'label=', Opal.to_a($writer));
+          $send(self, 'label=', $to_a($writer));
           return $writer[$rb_minus($writer["length"], 1)];
         } else {
           return nil
         };
-      }, $OpalBacktraceLocation_location$eq$7.$$arity = 1), nil) && 'location=';
-    })($nesting[0], null, $nesting);
+      }, 1);
+    })($nesting[0], null);
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/magic_comments"] = function(Opal) {
-  function $rb_ge(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs >= rhs : lhs['$>='](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $hash2 = Opal.hash2, $truthy = Opal.truthy, $send = Opal.send;
-
-  Opal.add_stubs(['$freeze', '$line', '$loc', '$take', '$each', '$>=', '$any?', '$scan', '$text', '$to_sym', '$===', '$[]=', '$-']);
+Opal.modules["opal/magic_comments"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $module = Opal.module, $const_set = Opal.const_set, $hash2 = Opal.hash2, $truthy = Opal.truthy, $send = Opal.send, $rb_ge = Opal.rb_ge, $eqeqeq = Opal.eqeqeq, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $defs = Opal.defs;
+
+  Opal.add_stubs('freeze,line,loc,take,each,>=,any?,scan,text,to_sym,===,[]=,-');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'MagicComments');
 
-    var $nesting = [self].concat($parent_nesting), $MagicComments_parse$1;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
-    Opal.const_set($nesting[0], 'MAGIC_COMMENT_RE', /^# *(\w+) *: *(\S+.*?) *$/.$freeze());
-    Opal.const_set($nesting[0], 'EMACS_MAGIC_COMMENT_RE', /^# *-\*- *(\w+) *: *(\S+.*?) *-\*- *$/.$freeze());
-    return (Opal.defs(self, '$parse', $MagicComments_parse$1 = function $$parse(sexp, comments) {
-      var $$2, self = this, flags = nil, first_line = nil;
+    $const_set($nesting[0], 'MAGIC_COMMENT_RE', /^# *(\w+) *: *(\S+.*?) *$/.$freeze());
+    $const_set($nesting[0], 'EMACS_MAGIC_COMMENT_RE', /^# *-\*- *(\w+) *: *(\S+.*?) *-\*- *$/.$freeze());
+    return $defs(self, '$parse', function $$parse(sexp, comments) {
+      var flags = nil, first_line = nil;
 
       
       flags = $hash2([], {});
       if ($truthy(sexp)) {
         
         first_line = sexp.$loc().$line();
-        comments = comments.$take(first_line);};
-      $send(comments, 'each', [], ($$2 = function(comment){var self = $$2.$$s == null ? this : $$2.$$s, $$3, $ret_or_1 = nil, $ret_or_2 = nil, parts = nil;
+        comments = comments.$take(first_line);
+      };
+      $send(comments, 'each', [], function $$1(comment){var parts = nil;
 
         
         
-        if (comment == null) {
-          comment = nil;
+        if (comment == null) comment = nil;;
+        if (($truthy(first_line) && ($truthy($rb_ge(comment.$loc().$line(), first_line))))) {
+          return nil;
         };
-        if ($truthy((function() {if ($truthy(($ret_or_1 = first_line))) {
-          return $rb_ge(comment.$loc().$line(), first_line)
-        } else {
-          return $ret_or_1
-        }; return nil; })())) {
-          return nil;};
-        if ($truthy((function() {if ($truthy(($ret_or_2 = (parts = comment.$text().$scan($$($nesting, 'MAGIC_COMMENT_RE')))['$any?']()))) {
-          return $ret_or_2
-        } else {
-          return (parts = comment.$text().$scan($$($nesting, 'EMACS_MAGIC_COMMENT_RE')))['$any?']()
-        }; return nil; })())) {
-          return $send(parts, 'each', [], ($$3 = function(key, value){var self = $$3.$$s == null ? this : $$3.$$s, $writer = nil, $case = nil;
+        if (($truthy((parts = comment.$text().$scan($$('MAGIC_COMMENT_RE')))['$any?']()) || ($truthy((parts = comment.$text().$scan($$('EMACS_MAGIC_COMMENT_RE')))['$any?']())))) {
+          return $send(parts, 'each', [], function $$2(key, value){var $writer = nil, $ret_or_1 = nil;
 
             
             
-            if (key == null) {
-              key = nil;
-            };
+            if (key == null) key = nil;;
             
-            if (value == null) {
-              value = nil;
-            };
-            $writer = [key.$to_sym(), (function() {$case = value;
-            if ("true"['$===']($case)) {return true}
-            else if ("false"['$===']($case)) {return false}
-            else {return value}})()];
-            $send(flags, '[]=', Opal.to_a($writer));
-            return $writer[$rb_minus($writer["length"], 1)];}, $$3.$$s = self, $$3.$$arity = 2, $$3))
+            if (value == null) value = nil;;
+            $writer = [key.$to_sym(), ($eqeqeq("true", ($ret_or_1 = value)) || (($eqeqeq("false", $ret_or_1) ? (false) : (value))))];
+            $send(flags, '[]=', $to_a($writer));
+            return $writer[$rb_minus($writer["length"], 1)];}, 2)
         } else {
           return nil
-        };}, $$2.$$s = self, $$2.$$arity = 1, $$2));
+        };}, 1);
       return flags;
-    }, $MagicComments_parse$1.$$arity = 2), nil) && 'parse';
-  })($$($nesting, 'Opal'), $nesting)
+    }, 2);
+  })($$('Opal'), $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/compiler"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $hash2 = Opal.hash2, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy, $slice = Opal.slice;
-
-  Opal.add_stubs(['$require', '$compile', '$new', '$freeze', '$join', '$dirname', '$first', '$split', '$basename', '$to_s', '$cleanpath', '$Pathname', '$fetch', '$define_method', '$option_value', '$key?', '$[]', '$!', '$include?', '$raise', '$inspect', '$[]=', '$-', '$compiler_option', '$attr_reader', '$attr_accessor', '$parse', '$re_raise_with_location', '$flatten', '$process', '$end_with?', '$code', '$last', '$<<', '$fragment', '$s', '$map', '$to_proc', '$file', '$source=', '$default_parser', '$tokenize', '$associate_locations', '$eof', '$magic_comments', '$to_sym', '$strip', '$location=', '$opal_location_from_error', '$path=', '$label', '$lines', '$to_i', '$line', '$label=', '$message', '$set_backtrace', '$backtrace', '$add_opal_location_to_error', '$warn', '$empty?', '$gsub', '$+', '$start_with?', '$helpers', '$new_temp', '$queue_temp', '$push_while', '$pop_while', '$in_while?', '$nil?', '$scope', '$handlers', '$type', '$compile_to_fragments', '$error', '$returns', '$===', '$updated', '$children', '$loc', '$uses_block!', '$block_name', '$find_parent_def', '$cache', '$source_map']);
+Opal.modules["opal/compiler"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $hash2 = Opal.hash2, $defs = Opal.defs, $klass = Opal.klass, $const_set = Opal.const_set, $send = Opal.send, $truthy = Opal.truthy, $not = Opal.not, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $def = Opal.def, $Opal = Opal.Opal, $to_ary = Opal.to_ary, $alias = Opal.alias, $eqeqeq = Opal.eqeqeq, $regexp = Opal.regexp, $rb_plus = Opal.rb_plus, $slice = Opal.slice, $eqeq = Opal.eqeq;
+
+  Opal.add_stubs('require,compile,new,freeze,join,dirname,first,split,basename,to_s,cleanpath,Pathname,fetch,define_method,option_value,key?,[],!,include?,raise,inspect,[]=,-,compiler_option,attr_reader,attr_accessor,parse,re_raise_with_location,flatten,process,end_with?,code,last,<<,fragment,s,map,to_proc,file,source=,default_parser,tokenize,requirable?,eval?,tap,meta,location,children,associate_locations,eof,magic_comments,to_sym,strip,async_await_before_typecasting,===,async_await_set_to_regexp,to_a,gsub,escape,location=,opal_location_from_error,path=,label,lines,to_i,line,label=,message,set_backtrace,backtrace,add_opal_location_to_error,warn,empty?,+,start_with?,helpers,new_temp,queue_temp,push_while,pop_while,in_while?,nil?,scope,handlers,type,compile_to_fragments,error,returns,updated,==,uses_block!,block_name,find_parent_def,cache,source_map');
   
   self.$require("set");
   self.$require("opal/parser");
@@ -40348,76 +36570,66 @@ Opal.modules["opal/compiler"] = function(Opal) {
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Opal');
 
-    var $nesting = [self].concat($parent_nesting), $Opal_compile$1;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
-    Opal.defs(self, '$compile', $Opal_compile$1 = function $$compile(source, options) {
-      var self = this;
-
+    $defs(self, '$compile', function $$compile(source, options) {
       
       
-      if (options == null) {
-        options = $hash2([], {});
-      };
-      return $$($nesting, 'Compiler').$new(source, options).$compile();
-    }, $Opal_compile$1.$$arity = -2);
+      
+      if (options == null) options = $hash2([], {});;
+      return $$('Compiler').$new(source, options).$compile();
+    }, -2);
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Compiler');
 
-      var $nesting = [self].concat($parent_nesting), $Compiler_module_name$2, $Compiler_compiler_option$3, $Compiler_option_value$5, $Compiler_initialize$6, $Compiler_compile$7, $Compiler_parse$9, $Compiler_source_map$11, $Compiler_helpers$12, $Compiler_operator_helpers$14, $Compiler_method_calls$15, $Compiler_error$16, $Compiler_re_raise_with_location$17, $Compiler_warning$18, $Compiler_parser_indent$19, $Compiler_s$20, $Compiler_fragment$21, $Compiler_unique_temp$22, $Compiler_helper$23, $Compiler_indent$24, $Compiler_with_temp$25, $Compiler_in_while$26, $Compiler_in_case$27, $Compiler_in_while$ques$28, $Compiler_process$29, $Compiler_handlers$30, $Compiler_requires$31, $Compiler_required_trees$32, $Compiler_returns$33, $Compiler_handle_block_given_call$35, $Compiler_marshal_dump$36, $Compiler_marshal_load$37;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.option_values = self.$$prototype.options = self.$$prototype.magic_comments = self.$$prototype.fragments = self.$$prototype.source = self.$$prototype.buffer = self.$$prototype.source_map = self.$$prototype.result = self.$$prototype.helpers = self.$$prototype.operator_helpers = self.$$prototype.method_calls = self.$$prototype.indent = self.$$prototype.unique = self.$$prototype.scope = self.$$prototype.case_stmt = self.$$prototype.handlers = self.$$prototype.requires = self.$$prototype.required_trees = nil;
+      $proto.option_values = $proto.options = $proto.magic_comments = $proto.fragments = $proto.source = $proto.buffer = $proto.source_map = $proto.result = $proto.helpers = $proto.method_calls = $proto.async_await = $proto.indent = $proto.unique = $proto.scope = $proto.case_stmt = $proto.handlers = $proto.requires = $proto.required_trees = $proto.autoloads = nil;
       
-      Opal.const_set($nesting[0], 'INDENT', "  ");
-      Opal.const_set($nesting[0], 'COMPARE', ["<", ">", "<=", ">="].$freeze());
-      Opal.defs(self, '$module_name', $Compiler_module_name$2 = function $$module_name(path) {
+      $const_set($nesting[0], 'INDENT', "  ");
+      $const_set($nesting[0], 'COMPARE', ["<", ">", "<=", ">="].$freeze());
+      $defs(self, '$module_name', function $$module_name(path) {
         var self = this;
 
         
-        path = $$($nesting, 'File').$join($$($nesting, 'File').$dirname(path), $$($nesting, 'File').$basename(path).$split(".").$first());
+        path = $$('File').$join($$('File').$dirname(path), $$('File').$basename(path).$split(".").$first());
         return self.$Pathname(path).$cleanpath().$to_s();
-      }, $Compiler_module_name$2.$$arity = 1);
-      Opal.defs(self, '$compiler_option', $Compiler_compiler_option$3 = function $$compiler_option(name, config) {
-        var $$4, self = this, method_name = nil;
+      }, 1);
+      $defs(self, '$compiler_option', function $$compiler_option(name, config) {
+        var self = this, method_name = nil;
 
         
         
-        if (config == null) {
-          config = $hash2([], {});
-        };
+        if (config == null) config = $hash2([], {});;
         method_name = config.$fetch("as", name);
-        return $send(self, 'define_method', [method_name], ($$4 = function(){var self = $$4.$$s == null ? this : $$4.$$s;
+        return $send(self, 'define_method', [method_name], function $$1(){var self = $$1.$$s == null ? this : $$1.$$s;
 
-          return self.$option_value(name, config)}, $$4.$$s = self, $$4.$$arity = 0, $$4));
-      }, $Compiler_compiler_option$3.$$arity = -2);
+          return self.$option_value(name, config)}, {$$arity: 0, $$s: self});
+      }, -2);
       
-      Opal.def(self, '$option_value', $Compiler_option_value$5 = function $$option_value(name, config) {
-        var self = this, default_value = nil, valid_values = nil, magic_comment = nil, value = nil, $ret_or_1 = nil, $ret_or_2 = nil, $writer = nil;
+      $def(self, '$option_value', function $$option_value(name, config) {
+        var self = this, default_value = nil, valid_values = nil, magic_comment = nil, value = nil, $writer = nil;
 
         
         if ($truthy(self.option_values['$key?'](name))) {
-          return self.option_values['$[]'](name)};
+          return self.option_values['$[]'](name)
+        };
         default_value = config['$[]']("default");
         valid_values = config['$[]']("valid_values");
         magic_comment = config['$[]']("magic_comment");
         value = self.options.$fetch(name, default_value);
-        if ($truthy((function() {if ($truthy(($ret_or_1 = magic_comment))) {
-          return self.magic_comments['$key?'](name)
-        } else {
-          return $ret_or_1
-        }; return nil; })())) {
-          value = self.magic_comments.$fetch(name)};
-        if ($truthy((function() {if ($truthy(($ret_or_2 = valid_values))) {
-          return valid_values['$include?'](value)['$!']()
-        } else {
-          return $ret_or_2
-        }; return nil; })())) {
-          self.$raise($$($nesting, 'ArgumentError'), "" + ("" + "invalid value " + (value.$inspect()) + " for option " + (name.$inspect()) + " ") + ("" + "(valid values: " + (valid_values.$inspect()) + ")"))};
+        if (($truthy(magic_comment) && ($truthy(self.magic_comments['$key?'](name))))) {
+          value = self.magic_comments.$fetch(name)
+        };
+        if (($truthy(valid_values) && ($not(valid_values['$include?'](value))))) {
+          self.$raise($$('ArgumentError'), "" + ("invalid value " + (value.$inspect()) + " for option " + (name.$inspect()) + " ") + ("(valid values: " + (valid_values.$inspect()) + ")"))
+        };
         
         $writer = [name, value];
-        $send(self.option_values, '[]=', Opal.to_a($writer));
+        $send(self.option_values, '[]=', $to_a($writer));
         return $writer[$rb_minus($writer["length"], 1)];;
-      }, $Compiler_option_value$5.$$arity = 2);
+      }, 2);
       self.$compiler_option("file", $hash2(["default"], {"default": "(file)"}));
       self.$compiler_option("method_missing", $hash2(["default", "as"], {"default": true, "as": "method_missing?"}));
       self.$compiler_option("arity_check", $hash2(["default", "as"], {"default": false, "as": "arity_check?"}));
@@ -40432,431 +36644,424 @@ Opal.modules["opal/compiler"] = function(Opal) {
       self.$compiler_option("use_strict", $hash2(["default", "as", "magic_comment"], {"default": false, "as": "use_strict?", "magic_comment": true}));
       self.$compiler_option("parse_comments", $hash2(["default", "as"], {"default": false, "as": "parse_comments?"}));
       self.$compiler_option("scope_variables", $hash2(["default"], {"default": []}));
+      self.$compiler_option("await", $hash2(["default", "as", "magic_comment"], {"default": false, "as": "async_await", "magic_comment": true}));
       self.$attr_reader("result");
       self.$attr_reader("fragments");
       self.$attr_accessor("scope");
+      self.$attr_accessor("top_scope");
       self.$attr_reader("case_stmt");
       self.$attr_reader("eof_content");
       self.$attr_reader("comments");
       self.$attr_reader("magic_comments");
+      self.$attr_accessor("dynamic_cache_result");
       
-      Opal.def(self, '$initialize', $Compiler_initialize$6 = function $$initialize(source, options) {
+      $def(self, '$initialize', function $$initialize(source, options) {
         var self = this;
 
         
         
-        if (options == null) {
-          options = $hash2([], {});
-        };
+        if (options == null) options = $hash2([], {});;
         self.source = source;
         self.indent = "";
         self.unique = 0;
         self.options = options;
-        self.comments = $$($nesting, 'Hash').$new([]);
+        self.comments = $$('Hash').$new([]);
         self.case_stmt = nil;
         self.option_values = $hash2([], {});
-        return (self.magic_comments = $hash2([], {}));
-      }, $Compiler_initialize$6.$$arity = -2);
+        self.magic_comments = $hash2([], {});
+        return (self.dynamic_cache_result = false);
+      }, -2);
       
-      Opal.def(self, '$compile', $Compiler_compile$7 = function $$compile() {
-        var $$8, self = this;
+      $def(self, '$compile', function $$compile() {
+        var self = this;
 
         
         self.$parse();
-        self.fragments = $send(self, 're_raise_with_location', [], ($$8 = function(){var self = $$8.$$s == null ? this : $$8.$$s;
+        self.fragments = $send(self, 're_raise_with_location', [], function $$2(){var self = $$2.$$s == null ? this : $$2.$$s;
           if (self.sexp == null) self.sexp = nil;
 
-          return self.$process(self.sexp).$flatten()}, $$8.$$s = self, $$8.$$arity = 0, $$8));
-        if ($truthy(self.fragments.$last().$code()['$end_with?']("\n"))) {
-        } else {
+          return self.$process(self.sexp).$flatten()}, {$$arity: 0, $$s: self});
+        if (!$truthy(self.fragments.$last().$code()['$end_with?']("\n"))) {
           self.fragments['$<<'](self.$fragment("\n", nil, self.$s("newline")))
         };
         return (self.result = $send(self.fragments, 'map', [], "code".$to_proc()).$join(""));
-      }, $Compiler_compile$7.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$parse', $Compiler_parse$9 = function $$parse() {
-        var $a, $b, $$10, self = this, $writer = nil, sexp = nil, comments = nil, tokens = nil, $ret_or_3 = nil;
+      $def(self, '$parse', function $$parse() {
+        var $a, $b, self = this, $writer = nil, sexp = nil, comments = nil, tokens = nil, kind = nil, first_node = nil;
 
         
-        self.buffer = $$$($$$($$$('::', 'Opal'), 'Parser'), 'SourceBuffer').$new(self.$file(), 1);
+        self.buffer = $$$($$$($Opal, 'Parser'), 'SourceBuffer').$new(self.$file(), 1);
         
         $writer = [self.source];
-        $send(self.buffer, 'source=', Opal.to_a($writer));
+        $send(self.buffer, 'source=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
-        self.parser = $$$($$($nesting, 'Opal'), 'Parser').$default_parser();
-        $b = $send(self, 're_raise_with_location', [], ($$10 = function(){var self = $$10.$$s == null ? this : $$10.$$s;
+        self.parser = $$$($$('Opal'), 'Parser').$default_parser();
+        $b = $send(self, 're_raise_with_location', [], function $$3(){var self = $$3.$$s == null ? this : $$3.$$s;
           if (self.parser == null) self.parser = nil;
           if (self.buffer == null) self.buffer = nil;
 
-          return self.parser.$tokenize(self.buffer)}, $$10.$$s = self, $$10.$$arity = 0, $$10)), $a = Opal.to_ary($b), (sexp = ($a[0] == null ? nil : $a[0])), (comments = ($a[1] == null ? nil : $a[1])), (tokens = ($a[2] == null ? nil : $a[2])), $b;
-        self.sexp = self.$s("top", (function() {if ($truthy(($ret_or_3 = sexp))) {
-          return $ret_or_3
-        } else {
-          return self.$s("nil")
-        }; return nil; })());
-        self.comments = $$$($$$($$$('::', 'Parser'), 'Source'), 'Comment').$associate_locations(sexp, comments);
-        self.magic_comments = $$($nesting, 'MagicComments').$parse(sexp, comments);
-        return (self.eof_content = $$($nesting, 'EofContent').$new(tokens, self.source).$eof());
-      }, $Compiler_parse$9.$$arity = 0);
-      
-      Opal.def(self, '$source_map', $Compiler_source_map$11 = function $$source_map() {
-        var self = this, $ret_or_4 = nil;
-
-        if ($truthy(($ret_or_4 = self.source_map))) {
-          return $ret_or_4
-        } else {
-          return $$$($$$($$$('::', 'Opal'), 'SourceMap'), 'File').$new(self.fragments, self.$file(), self.source, self.result)
-        }
-      }, $Compiler_source_map$11.$$arity = 0);
+          return self.parser.$tokenize(self.buffer)}, {$$arity: 0, $$s: self}), $a = $to_ary($b), (sexp = ($a[0] == null ? nil : $a[0])), (comments = ($a[1] == null ? nil : $a[1])), (tokens = ($a[2] == null ? nil : $a[2])), $b;
+        kind = ($truthy(self['$requirable?']()) ? ("require") : ($truthy(self['$eval?']()) ? ("eval") : ("main")));
+        self.sexp = $send(sexp, 'tap', [], function $$4(i){
+          
+          
+          if (i == null) i = nil;;
+          $writer = ["kind", kind];
+          $send(i.$meta(), '[]=', $to_a($writer));
+          return $writer[$rb_minus($writer["length"], 1)];}, 1);
+        if ($truthy(sexp.$children().$first().$location())) {
+          first_node = sexp.$children().$first()
+        };
+        self.comments = $$$($$$($$$('Parser'), 'Source'), 'Comment').$associate_locations(first_node, comments);
+        self.magic_comments = $$('MagicComments').$parse(first_node, comments);
+        return (self.eof_content = $$('EofContent').$new(tokens, self.source).$eof());
+      }, 0);
       
-      Opal.def(self, '$helpers', $Compiler_helpers$12 = function $$helpers() {
-        var $$13, self = this, $ret_or_5 = nil;
+      $def(self, '$source_map', function $$source_map() {
+        var self = this, $ret_or_1 = nil;
 
-        return (self.helpers = (function() {if ($truthy(($ret_or_5 = self.helpers))) {
-          return $ret_or_5
+        if ($truthy(($ret_or_1 = self.source_map))) {
+          return $ret_or_1
         } else {
-          return $$($nesting, 'Set').$new($send(self.$magic_comments()['$[]']("helpers").$to_s().$split(","), 'map', [], ($$13 = function(h){var self = $$13.$$s == null ? this : $$13.$$s;
+          return $$$($$$($Opal, 'SourceMap'), 'File').$new(self.fragments, self.$file(), self.source, self.result)
+        }
+      }, 0);
+      
+      $def(self, '$helpers', function $$helpers() {
+        var self = this, $ret_or_1 = nil;
 
-            
-            
-            if (h == null) {
-              h = nil;
-            };
-            return h.$strip().$to_sym();}, $$13.$$s = self, $$13.$$arity = 1, $$13)))
-        }; return nil; })())
-      }, $Compiler_helpers$12.$$arity = 0);
+        return (self.helpers = ($truthy(($ret_or_1 = self.helpers)) ? ($ret_or_1) : ($$('Set').$new($send(self.$magic_comments()['$[]']("helpers").$to_s().$split(","), 'map', [], function $$5(h){
+          
+          
+          if (h == null) h = nil;;
+          return h.$strip().$to_sym();}, 1)))))
+      }, 0);
       
-      Opal.def(self, '$operator_helpers', $Compiler_operator_helpers$14 = function $$operator_helpers() {
-        var self = this, $ret_or_6 = nil;
+      $def(self, '$method_calls', function $$method_calls() {
+        var self = this, $ret_or_1 = nil;
 
-        return (self.operator_helpers = (function() {if ($truthy(($ret_or_6 = self.operator_helpers))) {
-          return $ret_or_6
-        } else {
-          return $$($nesting, 'Set').$new()
-        }; return nil; })())
-      }, $Compiler_operator_helpers$14.$$arity = 0);
+        return (self.method_calls = ($truthy(($ret_or_1 = self.method_calls)) ? ($ret_or_1) : ($$('Set').$new())))
+      }, 0);
+      $alias(self, "async_await_before_typecasting", "async_await");
       
-      Opal.def(self, '$method_calls', $Compiler_method_calls$15 = function $$method_calls() {
-        var self = this, $ret_or_7 = nil;
+      $def(self, '$async_await', function $$async_await() {
+        var $a, self = this, original = nil, $ret_or_1 = nil;
 
-        return (self.method_calls = (function() {if ($truthy(($ret_or_7 = self.method_calls))) {
-          return $ret_or_7
+        if ($truthy((($a = self['async_await'], $a != null && $a !== nil) ? 'instance-variable' : nil))) {
+          return self.async_await
         } else {
-          return $$($nesting, 'Set').$new()
-        }; return nil; })())
-      }, $Compiler_method_calls$15.$$arity = 0);
+          
+          original = self.$async_await_before_typecasting();
+          return (self.async_await = ($eqeqeq($$('String'), ($ret_or_1 = original)) ? (self.$async_await_set_to_regexp($send(original.$split(","), 'map', [], function $$6(h){
+            
+            
+            if (h == null) h = nil;;
+            return h.$strip().$to_sym();}, 1))) : (($eqeqeq($$('Array'), $ret_or_1) || ($eqeqeq($$('Set'), $ret_or_1))) ? (self.$async_await_set_to_regexp($send(original.$to_a(), 'map', [], "to_sym".$to_proc()))) : (($eqeqeq($$('Regexp'), $ret_or_1) || (($eqeqeq(true, $ret_or_1) || ($eqeqeq(false, $ret_or_1))))) ? (original) : (self.$raise("A value of await compiler option can be either " + "a Set, an Array, a String or a Boolean."))))));
+        }
+      }, 0);
+      
+      $def(self, '$async_await_set_to_regexp', function $$async_await_set_to_regexp(set) {
+        
+        
+        set = $send(set, 'map', [], function $$7(name){
+          
+          
+          if (name == null) name = nil;;
+          return $$('Regexp').$escape(name.$to_s()).$gsub("\\*", ".*?");}, 1);
+        set = set.$join("|");
+        return $regexp(["^(", set, ")$"]);
+      }, 1);
       
-      Opal.def(self, '$error', $Compiler_error$16 = function $$error(msg, line) {
+      $def(self, '$error', function $$error(msg, line) {
         var self = this, error = nil, $writer = nil;
 
         
         
-        if (line == null) {
-          line = nil;
-        };
-        error = $$$($$$('::', 'Opal'), 'SyntaxError').$new(msg);
+        if (line == null) line = nil;;
+        error = $$$($Opal, 'SyntaxError').$new(msg);
         
-        $writer = [$$$($$($nesting, 'Opal'), 'OpalBacktraceLocation').$new(self.$file(), line)];
-        $send(error, 'location=', Opal.to_a($writer));
+        $writer = [$$$($$('Opal'), 'OpalBacktraceLocation').$new(self.$file(), line)];
+        $send(error, 'location=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return self.$raise(error);
-      }, $Compiler_error$16.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$re_raise_with_location', $Compiler_re_raise_with_location$17 = function $$re_raise_with_location() {
-        var $iter = $Compiler_re_raise_with_location$17.$$p, $yield = $iter || nil, self = this, error = nil, opal_location = nil, $writer = nil, $ret_or_8 = nil, new_error = nil;
+      $def(self, '$re_raise_with_location', function $$re_raise_with_location() {
+        var $yield = $$re_raise_with_location.$$p || nil, self = this, error = nil, opal_location = nil, $writer = nil, $ret_or_1 = nil, new_error = nil;
 
-        if ($iter) $Compiler_re_raise_with_location$17.$$p = null;
+        delete $$re_raise_with_location.$$p;
         try {
           return Opal.yieldX($yield, []);
         } catch ($err) {
-          if (Opal.rescue($err, [$$($nesting, 'StandardError'), $$$($$$('::', 'Opal'), 'SyntaxError')])) {(error = $err)
+          if (Opal.rescue($err, [$$('StandardError'), $$$($Opal, 'SyntaxError')])) {(error = $err)
             try {
               
-              opal_location = $$$('::', 'Opal').$opal_location_from_error(error);
+              opal_location = $Opal.$opal_location_from_error(error);
               
               $writer = [self.$file()];
-              $send(opal_location, 'path=', Opal.to_a($writer));
+              $send(opal_location, 'path=', $to_a($writer));
               $writer[$rb_minus($writer["length"], 1)];;
-              if ($truthy(($ret_or_8 = opal_location.$label()))) {
-                $ret_or_8
+              if ($truthy(($ret_or_1 = opal_location.$label()))) {
+                $ret_or_1
               } else {
                 
                 $writer = [self.source.$lines()['$[]']($rb_minus(opal_location.$line().$to_i(), 1)).$strip()];
-                $send(opal_location, 'label=', Opal.to_a($writer));
+                $send(opal_location, 'label=', $to_a($writer));
                 $writer[$rb_minus($writer["length"], 1)];
               };
-              new_error = $$$($$$('::', 'Opal'), 'SyntaxError').$new(error.$message());
+              new_error = $$$($Opal, 'SyntaxError').$new(error.$message());
               new_error.$set_backtrace(error.$backtrace());
-              $$$('::', 'Opal').$add_opal_location_to_error(opal_location, new_error);
+              $Opal.$add_opal_location_to_error(opal_location, new_error);
               return self.$raise(new_error);
             } finally { Opal.pop_exception(); }
           } else { throw $err; }
         }
-      }, $Compiler_re_raise_with_location$17.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$warning', $Compiler_warning$18 = function $$warning(msg, line) {
+      $def(self, '$warning', function $$warning(msg, line) {
         var self = this;
 
         
         
-        if (line == null) {
-          line = nil;
-        };
-        return self.$warn("" + "warning: " + (msg) + " -- " + (self.$file()) + ":" + (line));
-      }, $Compiler_warning$18.$$arity = -2);
+        if (line == null) line = nil;;
+        return self.$warn("warning: " + (msg) + " -- " + (self.$file()) + ":" + (line));
+      }, -2);
       
-      Opal.def(self, '$parser_indent', $Compiler_parser_indent$19 = function $$parser_indent() {
+      $def(self, '$parser_indent', function $$parser_indent() {
         var self = this;
 
         return self.indent
-      }, $Compiler_parser_indent$19.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$s', $Compiler_s$20 = function $$s(type, $a) {
-        var $post_args, children, self = this;
+      $def(self, '$s', function $$s(type, $a) {
+        var $post_args, children;
 
         
         
-        $post_args = Opal.slice.call(arguments, 1, arguments.length);
+        $post_args = Opal.slice.call(arguments, 1);
         
         children = $post_args;;
-        return $$$($$$($$$('::', 'Opal'), 'AST'), 'Node').$new(type, children);
-      }, $Compiler_s$20.$$arity = -2);
+        return $$$($$$($Opal, 'AST'), 'Node').$new(type, children);
+      }, -2);
       
-      Opal.def(self, '$fragment', $Compiler_fragment$21 = function $$fragment(str, scope, sexp) {
-        var self = this;
-
+      $def(self, '$fragment', function $$fragment(str, scope, sexp) {
         
         
-        if (sexp == null) {
-          sexp = nil;
-        };
-        return $$($nesting, 'Fragment').$new(str, scope, sexp);
-      }, $Compiler_fragment$21.$$arity = -3);
+        
+        if (sexp == null) sexp = nil;;
+        return $$('Fragment').$new(str, scope, sexp);
+      }, -3);
       
-      Opal.def(self, '$unique_temp', $Compiler_unique_temp$22 = function $$unique_temp(name) {
-        var self = this, $ret_or_9 = nil, unique = nil;
+      $def(self, '$unique_temp', function $$unique_temp(name) {
+        var self = this, unique = nil;
 
         
         name = name.$to_s();
-        if ($truthy((function() {if ($truthy(($ret_or_9 = name))) {
-          return name['$empty?']()['$!']()
-        } else {
-          return $ret_or_9
-        }; return nil; })())) {
-          name = name.$to_s().$gsub("<=>", "$lt_eq_gt").$gsub("===", "$eq_eq_eq").$gsub("==", "$eq_eq").$gsub("=~", "$eq_tilde").$gsub("!~", "$excl_tilde").$gsub("!=", "$not_eq").$gsub("<=", "$lt_eq").$gsub(">=", "$gt_eq").$gsub("=", "$eq").$gsub("?", "$ques").$gsub("!", "$excl").$gsub("/", "$slash").$gsub("%", "$percent").$gsub("+", "$plus").$gsub("-", "$minus").$gsub("<", "$lt").$gsub(">", "$gt").$gsub(/[^\w\$]/, "$")};
+        if (($truthy(name) && ($not(name['$empty?']())))) {
+          name = name.$to_s().$gsub("<=>", "$lt_eq_gt").$gsub("===", "$eq_eq_eq").$gsub("==", "$eq_eq").$gsub("=~", "$eq_tilde").$gsub("!~", "$excl_tilde").$gsub("!=", "$not_eq").$gsub("<=", "$lt_eq").$gsub(">=", "$gt_eq").$gsub("=", "$eq").$gsub("?", "$ques").$gsub("!", "$excl").$gsub("/", "$slash").$gsub("%", "$percent").$gsub("+", "$plus").$gsub("-", "$minus").$gsub("<", "$lt").$gsub(">", "$gt").$gsub(/[^\w\$]/, "$")
+        };
         unique = (self.unique = $rb_plus(self.unique, 1));
-        return "" + ((function() {if ($truthy(name['$start_with?']("$"))) {
-          return nil
-        } else {
-          return "$"
-        }; return nil; })()) + (name) + "$" + (unique);
-      }, $Compiler_unique_temp$22.$$arity = 1);
+        return "" + (($truthy(name['$start_with?']("$")) ? (nil) : ("$"))) + (name) + "$" + (unique);
+      }, 1);
       
-      Opal.def(self, '$helper', $Compiler_helper$23 = function $$helper(name) {
+      $def(self, '$helper', function $$helper(name) {
         var self = this;
 
         return self.$helpers()['$<<'](name)
-      }, $Compiler_helper$23.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$indent', $Compiler_indent$24 = function $$indent() {
-        var $iter = $Compiler_indent$24.$$p, $yield = $iter || nil, self = this, indent = nil, res = nil;
+      $def(self, '$indent', function $$indent() {
+        var $yield = $$indent.$$p || nil, self = this, indent = nil, res = nil;
 
-        if ($iter) $Compiler_indent$24.$$p = null;
+        delete $$indent.$$p;
         
         indent = self.indent;
-        self.indent = $rb_plus(self.indent, $$($nesting, 'INDENT'));
-        self.space = "" + "\n" + (self.indent);
+        self.indent = $rb_plus(self.indent, $$('INDENT'));
+        self.space = "\n" + (self.indent);
         res = Opal.yieldX($yield, []);
         self.indent = indent;
-        self.space = "" + "\n" + (self.indent);
+        self.space = "\n" + (self.indent);
         return res;
-      }, $Compiler_indent$24.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$with_temp', $Compiler_with_temp$25 = function $$with_temp() {
-        var $iter = $Compiler_with_temp$25.$$p, $yield = $iter || nil, self = this, tmp = nil, res = nil;
+      $def(self, '$with_temp', function $$with_temp() {
+        var $yield = $$with_temp.$$p || nil, self = this, tmp = nil, res = nil;
 
-        if ($iter) $Compiler_with_temp$25.$$p = null;
+        delete $$with_temp.$$p;
         
         tmp = self.scope.$new_temp();
         res = Opal.yield1($yield, tmp);
         self.scope.$queue_temp(tmp);
         return res;
-      }, $Compiler_with_temp$25.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$in_while', $Compiler_in_while$26 = function $$in_while() {
-        var $iter = $Compiler_in_while$26.$$p, $yield = $iter || nil, self = this, result = nil;
+      $def(self, '$in_while', function $$in_while() {
+        var $yield = $$in_while.$$p || nil, self = this, result = nil;
 
-        if ($iter) $Compiler_in_while$26.$$p = null;
+        delete $$in_while.$$p;
         
-        if (($yield !== nil)) {
-        } else {
+        if (!($yield !== nil)) {
           return nil
         };
         self.while_loop = self.scope.$push_while();
         result = Opal.yieldX($yield, []);
         self.scope.$pop_while();
         return result;
-      }, $Compiler_in_while$26.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$in_case', $Compiler_in_case$27 = function $$in_case() {
-        var $iter = $Compiler_in_case$27.$$p, $yield = $iter || nil, self = this, old = nil;
+      $def(self, '$in_case', function $$in_case() {
+        var $yield = $$in_case.$$p || nil, self = this, old = nil;
 
-        if ($iter) $Compiler_in_case$27.$$p = null;
+        delete $$in_case.$$p;
         
-        if (($yield !== nil)) {
-        } else {
+        if (!($yield !== nil)) {
           return nil
         };
         old = self.case_stmt;
         self.case_stmt = $hash2([], {});
         Opal.yieldX($yield, []);
         return (self.case_stmt = old);
-      }, $Compiler_in_case$27.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$in_while?', $Compiler_in_while$ques$28 = function() {
+      $def(self, '$in_while?', function $Compiler_in_while$ques$8() {
         var self = this;
 
         return self.scope['$in_while?']()
-      }, $Compiler_in_while$ques$28.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$process', $Compiler_process$29 = function $$process(sexp, level) {
+      $def(self, '$process', function $$process(sexp, level) {
         var self = this, handler = nil;
 
         
         
-        if (level == null) {
-          level = "expr";
-        };
+        if (level == null) level = "expr";;
         if ($truthy(sexp['$nil?']())) {
-          return self.$fragment("", self.$scope())};
+          return self.$fragment("", self.$scope())
+        };
         if ($truthy((handler = self.$handlers()['$[]'](sexp.$type())))) {
           return handler.$new(sexp, level, self).$compile_to_fragments()
         } else {
-          return self.$error("" + "Unsupported sexp: " + (sexp.$type()))
+          return self.$error("Unsupported sexp: " + (sexp.$type()))
         };
-      }, $Compiler_process$29.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$handlers', $Compiler_handlers$30 = function $$handlers() {
-        var self = this, $ret_or_10 = nil;
+      $def(self, '$handlers', function $$handlers() {
+        var self = this, $ret_or_1 = nil;
 
-        return (self.handlers = (function() {if ($truthy(($ret_or_10 = self.handlers))) {
-          return $ret_or_10
-        } else {
-          return $$$($$$($$($nesting, 'Opal'), 'Nodes'), 'Base').$handlers()
-        }; return nil; })())
-      }, $Compiler_handlers$30.$$arity = 0);
+        return (self.handlers = ($truthy(($ret_or_1 = self.handlers)) ? ($ret_or_1) : ($$$($$$($$('Opal'), 'Nodes'), 'Base').$handlers())))
+      }, 0);
       
-      Opal.def(self, '$requires', $Compiler_requires$31 = function $$requires() {
-        var self = this, $ret_or_11 = nil;
+      $def(self, '$requires', function $$requires() {
+        var self = this, $ret_or_1 = nil;
 
-        return (self.requires = (function() {if ($truthy(($ret_or_11 = self.requires))) {
-          return $ret_or_11
-        } else {
-          return []
-        }; return nil; })())
-      }, $Compiler_requires$31.$$arity = 0);
+        return (self.requires = ($truthy(($ret_or_1 = self.requires)) ? ($ret_or_1) : ([])))
+      }, 0);
       
-      Opal.def(self, '$required_trees', $Compiler_required_trees$32 = function $$required_trees() {
-        var self = this, $ret_or_12 = nil;
+      $def(self, '$required_trees', function $$required_trees() {
+        var self = this, $ret_or_1 = nil;
 
-        return (self.required_trees = (function() {if ($truthy(($ret_or_12 = self.required_trees))) {
-          return $ret_or_12
-        } else {
-          return []
-        }; return nil; })())
-      }, $Compiler_required_trees$32.$$arity = 0);
+        return (self.required_trees = ($truthy(($ret_or_1 = self.required_trees)) ? ($ret_or_1) : ([])))
+      }, 0);
       
-      Opal.def(self, '$returns', $Compiler_returns$33 = function $$returns(sexp) {
-        var $a, $b, $$34, self = this, $case = nil, when_sexp = nil, then_sexp = nil, body_sexp = nil, resbodies = nil, else_sexp = nil, klass = nil, lvar = nil, body = nil, rescue_sexp = nil, ensure_body = nil, rest = nil, last = nil, cond = nil, true_body = nil, false_body = nil;
+      $def(self, '$autoloads', function $$autoloads() {
+        var self = this, $ret_or_1 = nil;
+
+        return (self.autoloads = ($truthy(($ret_or_1 = self.autoloads)) ? ($ret_or_1) : ([])))
+      }, 0);
+      
+      $def(self, '$returns', function $$returns(sexp) {
+        var $a, $b, self = this, $ret_or_1 = nil, when_sexp = nil, then_sexp = nil, body_sexp = nil, resbodies = nil, else_sexp = nil, klass = nil, lvar = nil, body = nil, rescue_sexp = nil, ensure_body = nil, rest = nil, last = nil, cond = nil, true_body = nil, false_body = nil;
 
         
-        if ($truthy(sexp)) {
-        } else {
+        if (!$truthy(sexp)) {
           return self.$returns(self.$s("nil"))
         };
-        return (function() {$case = sexp.$type();
-        if ("undef"['$===']($case)) {return self.$returns(self.$s("begin", sexp, self.$s("nil")))}
-        else if ("break"['$===']($case) || "next"['$===']($case) || "redo"['$===']($case) || "retry"['$===']($case)) {return sexp}
-        else if ("yield"['$===']($case)) {return sexp.$updated("returnable_yield", nil)}
-        else if ("when"['$===']($case)) {
-        $a = [].concat(Opal.to_a(sexp)), $b = $a.length - 1, $b = ($b < 0) ? 0 : $b, (when_sexp = $slice.call($a, 0, $b)), (then_sexp = ($a[$b] == null ? nil : $a[$b])), $a;
-        return sexp.$updated(nil, [].concat(Opal.to_a(when_sexp)).concat([self.$returns(then_sexp)]));}
-        else if ("rescue"['$===']($case)) {
-        $a = [].concat(Opal.to_a(sexp)), (body_sexp = ($a[0] == null ? nil : $a[0])), $b = $a.length - 1, $b = ($b < 1) ? 1 : $b, (resbodies = $slice.call($a, 1, $b)), (else_sexp = ($a[$b] == null ? nil : $a[$b])), $a;
-        resbodies = $send(resbodies, 'map', [], ($$34 = function(resbody){var self = $$34.$$s == null ? this : $$34.$$s;
-
-          
-          
-          if (resbody == null) {
-            resbody = nil;
-          };
-          return self.$returns(resbody);}, $$34.$$s = self, $$34.$$arity = 1, $$34));
-        if ($truthy(else_sexp)) {
-          else_sexp = self.$returns(else_sexp)};
-        return sexp.$updated(nil, [self.$returns(body_sexp)].concat(Opal.to_a(resbodies)).concat([else_sexp]));}
-        else if ("resbody"['$===']($case)) {
-        $a = [].concat(Opal.to_a(sexp)), (klass = ($a[0] == null ? nil : $a[0])), (lvar = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), $a;
-        return sexp.$updated(nil, [klass, lvar, self.$returns(body)]);}
-        else if ("ensure"['$===']($case)) {
-        $a = [].concat(Opal.to_a(sexp)), (rescue_sexp = ($a[0] == null ? nil : $a[0])), (ensure_body = ($a[1] == null ? nil : $a[1])), $a;
-        sexp = sexp.$updated(nil, [self.$returns(rescue_sexp), ensure_body]);
-        return self.$s("js_return", sexp);}
-        else if ("begin"['$===']($case) || "kwbegin"['$===']($case)) {
-        $a = [].concat(Opal.to_a(sexp)), $b = $a.length - 1, $b = ($b < 0) ? 0 : $b, (rest = $slice.call($a, 0, $b)), (last = ($a[$b] == null ? nil : $a[$b])), $a;
-        return sexp.$updated(nil, [].concat(Opal.to_a(rest)).concat([self.$returns(last)]));}
-        else if ("while"['$===']($case) || "until"['$===']($case) || "while_post"['$===']($case) || "until_post"['$===']($case)) {return sexp}
-        else if ("return"['$===']($case) || "js_return"['$===']($case) || "returnable_yield"['$===']($case)) {return sexp}
-        else if ("xstr"['$===']($case)) {return sexp.$updated(nil, [$send(self, 's', ["js_return"].concat(Opal.to_a(sexp.$children())))])}
-        else if ("if"['$===']($case)) {
-        $a = [].concat(Opal.to_a(sexp)), (cond = ($a[0] == null ? nil : $a[0])), (true_body = ($a[1] == null ? nil : $a[1])), (false_body = ($a[2] == null ? nil : $a[2])), $a;
-        return sexp.$updated(nil, [cond, self.$returns(true_body), self.$returns(false_body)]);}
-        else {return self.$s("js_return", sexp).$updated(nil, nil, $hash2(["location"], {"location": sexp.$loc()}))}})();
-      }, $Compiler_returns$33.$$arity = 1);
-      
-      Opal.def(self, '$handle_block_given_call', $Compiler_handle_block_given_call$35 = function $$handle_block_given_call(sexp) {
-        var self = this, $ret_or_13 = nil, scope = nil;
+        if ($eqeqeq("undef", ($ret_or_1 = sexp.$type()))) {
+          return self.$returns(sexp.$updated("begin", [sexp, self.$s("nil")]))
+        } else if (($eqeqeq("break", $ret_or_1) || (($eqeqeq("next", $ret_or_1) || (($eqeqeq("redo", $ret_or_1) || ($eqeqeq("retry", $ret_or_1)))))))) {
+          return sexp
+        } else if ($eqeqeq("yield", $ret_or_1)) {
+          return sexp.$updated("returnable_yield", nil)
+        } else if ($eqeqeq("when", $ret_or_1)) {
+          
+          $a = [].concat($to_a(sexp)), $b = $a.length - 1, $b = ($b < 0) ? 0 : $b, (when_sexp = $slice.call($a, 0, $b)), (then_sexp = ($a[$b] == null ? nil : $a[$b])), $a;
+          return sexp.$updated(nil, [].concat($to_a(when_sexp)).concat([self.$returns(then_sexp)]));
+        } else if ($eqeqeq("rescue", $ret_or_1)) {
+          
+          $a = [].concat($to_a(sexp)), (body_sexp = ($a[0] == null ? nil : $a[0])), $b = $a.length - 1, $b = ($b < 1) ? 1 : $b, (resbodies = $slice.call($a, 1, $b)), (else_sexp = ($a[$b] == null ? nil : $a[$b])), $a;
+          resbodies = $send(resbodies, 'map', [], function $$9(resbody){var self = $$9.$$s == null ? this : $$9.$$s;
+
+            
+            
+            if (resbody == null) resbody = nil;;
+            return self.$returns(resbody);}, {$$arity: 1, $$s: self});
+          if ($truthy(else_sexp)) {
+            else_sexp = self.$returns(else_sexp)
+          };
+          return sexp.$updated(nil, [self.$returns(body_sexp)].concat($to_a(resbodies)).concat([else_sexp]));
+        } else if ($eqeqeq("resbody", $ret_or_1)) {
+          
+          $a = [].concat($to_a(sexp)), (klass = ($a[0] == null ? nil : $a[0])), (lvar = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), $a;
+          return sexp.$updated(nil, [klass, lvar, self.$returns(body)]);
+        } else if ($eqeqeq("ensure", $ret_or_1)) {
+          
+          $a = [].concat($to_a(sexp)), (rescue_sexp = ($a[0] == null ? nil : $a[0])), (ensure_body = ($a[1] == null ? nil : $a[1])), $a;
+          sexp = sexp.$updated(nil, [self.$returns(rescue_sexp), ensure_body]);
+          return sexp.$updated("js_return", [sexp]);
+        } else if (($eqeqeq("begin", $ret_or_1) || ($eqeqeq("kwbegin", $ret_or_1)))) {
+          
+          $a = [].concat($to_a(sexp)), $b = $a.length - 1, $b = ($b < 0) ? 0 : $b, (rest = $slice.call($a, 0, $b)), (last = ($a[$b] == null ? nil : $a[$b])), $a;
+          return sexp.$updated(nil, [].concat($to_a(rest)).concat([self.$returns(last)]));
+        } else if (($eqeqeq("while", $ret_or_1) || (($eqeqeq("until", $ret_or_1) || (($eqeqeq("while_post", $ret_or_1) || ($eqeqeq("until_post", $ret_or_1)))))))) {
+          return sexp
+        } else if (($eqeqeq("return", $ret_or_1) || (($eqeqeq("js_return", $ret_or_1) || ($eqeqeq("returnable_yield", $ret_or_1)))))) {
+          return sexp
+        } else if ($eqeqeq("xstr", $ret_or_1)) {
+          return sexp.$updated(nil, [$send(self, 's', ["js_return"].concat($to_a(sexp.$children())))])
+        } else if ($eqeqeq("if", $ret_or_1)) {
+          
+          $a = [].concat($to_a(sexp)), (cond = ($a[0] == null ? nil : $a[0])), (true_body = ($a[1] == null ? nil : $a[1])), (false_body = ($a[2] == null ? nil : $a[2])), $a;
+          return sexp.$updated(nil, [cond, self.$returns(true_body), self.$returns(false_body)]);
+        } else if (($eqeq(sexp.$type(), "send") && ($eqeq(sexp.$children()['$[]'](1), "debugger")))) {
+          return sexp.$updated("begin", [sexp, self.$s("js_return", self.$s("nil"))])
+        } else {
+          return sexp.$updated("js_return", [sexp])
+        };
+      }, 1);
+      
+      $def(self, '$handle_block_given_call', function $$handle_block_given_call(sexp) {
+        var self = this, scope = nil;
 
         
         self.scope['$uses_block!']();
         if ($truthy(self.scope.$block_name())) {
-          return self.$fragment("" + "(" + (self.scope.$block_name()) + " !== nil)", self.$scope(), sexp)
-        } else if ($truthy((function() {if ($truthy(($ret_or_13 = (scope = self.scope.$find_parent_def())))) {
-          return scope.$block_name()
-        } else {
-          return $ret_or_13
-        }; return nil; })())) {
-          return self.$fragment("" + "(" + (scope.$block_name()) + " !== nil)", scope, sexp)
+          return self.$fragment("(" + (self.scope.$block_name()) + " !== nil)", self.$scope(), sexp)
+        } else if (($truthy((scope = self.scope.$find_parent_def())) && ($truthy(scope.$block_name())))) {
+          return self.$fragment("(" + (scope.$block_name()) + " !== nil)", scope, sexp)
         } else {
           return self.$fragment("false", scope, sexp)
         };
-      }, $Compiler_handle_block_given_call$35.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$marshal_dump', $Compiler_marshal_dump$36 = function $$marshal_dump() {
-        var self = this, $ret_or_14 = nil;
+      $def(self, '$marshal_dump', function $$marshal_dump() {
+        var self = this, $ret_or_1 = nil;
 
-        return [self.options, self.option_values, (self.source_map = (function() {if ($truthy(($ret_or_14 = self.source_map))) {
-          return $ret_or_14
-        } else {
-          return self.$source_map().$cache()
-        }; return nil; })()), self.magic_comments, self.result, self.required_trees, self.requires]
-      }, $Compiler_marshal_dump$36.$$arity = 0);
-      return (Opal.def(self, '$marshal_load', $Compiler_marshal_load$37 = function $$marshal_load(src) {
+        return [self.options, self.option_values, (self.source_map = ($truthy(($ret_or_1 = self.source_map)) ? ($ret_or_1) : (self.$source_map().$cache()))), self.magic_comments, self.result, self.required_trees, self.requires, self.autoloads]
+      }, 0);
+      return $def(self, '$marshal_load', function $$marshal_load(src) {
         var $a, $b, self = this;
 
-        return $b = src, $a = Opal.to_ary($b), (self.options = ($a[0] == null ? nil : $a[0])), (self.option_values = ($a[1] == null ? nil : $a[1])), (self.source_map = ($a[2] == null ? nil : $a[2])), (self.magic_comments = ($a[3] == null ? nil : $a[3])), (self.result = ($a[4] == null ? nil : $a[4])), (self.required_trees = ($a[5] == null ? nil : $a[5])), (self.requires = ($a[6] == null ? nil : $a[6])), $b
-      }, $Compiler_marshal_load$37.$$arity = 1), nil) && 'marshal_load';
+        return $b = src, $a = $to_ary($b), (self.options = ($a[0] == null ? nil : $a[0])), (self.option_values = ($a[1] == null ? nil : $a[1])), (self.source_map = ($a[2] == null ? nil : $a[2])), (self.magic_comments = ($a[3] == null ? nil : $a[3])), (self.result = ($a[4] == null ? nil : $a[4])), (self.required_trees = ($a[5] == null ? nil : $a[5])), (self.requires = ($a[6] == null ? nil : $a[6])), (self.autoloads = ($a[7] == null ? nil : $a[7])), $b
+      }, 1);
     })($nesting[0], null, $nesting);
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/erb"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send;
+Opal.modules["opal/erb"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $defs = Opal.defs, $klass = Opal.klass, $const_set = Opal.const_set, $def = Opal.def, $truthy = Opal.truthy, $rb_plus = Opal.rb_plus, $send = Opal.send, $regexp = Opal.regexp;
 
-  Opal.add_stubs(['$require', '$compile', '$new', '$freeze', '$fix_quotes', '$find_contents', '$find_code', '$wrap_compiled', '$require_erb', '$prepared_source', '$gsub', '$+', '$last_match', '$=~', '$sub']);
+  Opal.add_stubs('require,compile,new,freeze,fix_quotes,find_contents,find_code,wrap_compiled,require_erb,prepared_source,gsub,+,last_match,=~,sub');
   
   self.$require("opal/compiler");
   return (function($base, $parent_nesting) {
@@ -40867,117 +37072,93 @@ Opal.modules["opal/erb"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'ERB');
 
-      var $nesting = [self].concat($parent_nesting), $ERB_compile$1;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
-      Opal.defs(self, '$compile', $ERB_compile$1 = function $$compile(source, file_name) {
-        var self = this;
-
+      $defs(self, '$compile', function $$compile(source, file_name) {
         
         
-        if (file_name == null) {
-          file_name = "(erb)";
-        };
-        return $$($nesting, 'Compiler').$new(source, file_name).$compile();
-      }, $ERB_compile$1.$$arity = -2);
+        
+        if (file_name == null) file_name = "(erb)";;
+        return $$('Compiler').$new(source, file_name).$compile();
+      }, -2);
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'Compiler');
 
-        var $nesting = [self].concat($parent_nesting), $Compiler_initialize$2, $Compiler_prepared_source$3, $Compiler_compile$4, $Compiler_fix_quotes$5, $Compiler_require_erb$6, $Compiler_find_contents$7, $Compiler_find_code$9, $Compiler_wrap_compiled$11;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.prepared_source = self.$$prototype.source = self.$$prototype.file_name = nil;
+        $proto.prepared_source = $proto.source = $proto.file_name = nil;
         
-        Opal.const_set($nesting[0], 'BLOCK_EXPR', /\s+(do|\{)(\s*\|[^|]*\|)?\s*\Z/.$freeze());
+        $const_set($nesting[0], 'BLOCK_EXPR', /\s+(do|\{)(\s*\|[^|]*\|)?\s*\Z/.$freeze());
         
-        Opal.def(self, '$initialize', $Compiler_initialize$2 = function $$initialize(source, file_name) {
+        $def(self, '$initialize', function $$initialize(source, file_name) {
           var $a, self = this;
 
           
           
-          if (file_name == null) {
-            file_name = "(erb)";
-          };
+          if (file_name == null) file_name = "(erb)";;
           return $a = [source, file_name, source], (self.source = $a[0]), (self.file_name = $a[1]), (self.result = $a[2]), $a;
-        }, $Compiler_initialize$2.$$arity = -2);
+        }, -2);
         
-        Opal.def(self, '$prepared_source', $Compiler_prepared_source$3 = function $$prepared_source() {
+        $def(self, '$prepared_source', function $$prepared_source() {
           var self = this, $ret_or_1 = nil, source = nil;
 
-          return (self.prepared_source = (function() {if ($truthy(($ret_or_1 = self.prepared_source))) {
-            return $ret_or_1
-          } else {
-            
-            source = self.source;
-            source = self.$fix_quotes(source);
-            source = self.$find_contents(source);
-            source = self.$find_code(source);
-            source = self.$wrap_compiled(source);
-            source = self.$require_erb(source);
-            return source;
-          }; return nil; })())
-        }, $Compiler_prepared_source$3.$$arity = 0);
+          return (self.prepared_source = ($truthy(($ret_or_1 = self.prepared_source)) ? ($ret_or_1) : (((source = self.source), (source = self.$fix_quotes(source)), (source = self.$find_contents(source)), (source = self.$find_code(source)), (source = self.$wrap_compiled(source)), (source = self.$require_erb(source)), source))))
+        }, 0);
         
-        Opal.def(self, '$compile', $Compiler_compile$4 = function $$compile() {
+        $def(self, '$compile', function $$compile() {
           var self = this;
 
-          return $$($nesting, 'Opal').$compile(self.$prepared_source())
-        }, $Compiler_compile$4.$$arity = 0);
+          return $$('Opal').$compile(self.$prepared_source())
+        }, 0);
         
-        Opal.def(self, '$fix_quotes', $Compiler_fix_quotes$5 = function $$fix_quotes(result) {
-          var self = this;
-
+        $def(self, '$fix_quotes', function $$fix_quotes(result) {
+          
           return result.$gsub("\"", "\\\"")
-        }, $Compiler_fix_quotes$5.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$require_erb', $Compiler_require_erb$6 = function $$require_erb(result) {
-          var self = this;
-
+        $def(self, '$require_erb', function $$require_erb(result) {
+          
           return $rb_plus("require \"erb\";", result)
-        }, $Compiler_require_erb$6.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$find_contents', $Compiler_find_contents$7 = function $$find_contents(result) {
-          var $$8, self = this;
-
-          return $send(result, 'gsub', [/<%=([\s\S]+?)%>/], ($$8 = function(){var self = $$8.$$s == null ? this : $$8.$$s, inner = nil;
+        $def(self, '$find_contents', function $$find_contents(result) {
+          
+          return $send(result, 'gsub', [/<%=([\s\S]+?)%>/], function $$1(){var inner = nil;
 
             
-            inner = $$($nesting, 'Regexp').$last_match(1).$gsub(/\\'/, "'").$gsub(/\\"/, "\"");
-            if ($truthy(inner['$=~']($$($nesting, 'BLOCK_EXPR')))) {
-              return "" + "\")\noutput_buffer.append= " + (inner) + "\noutput_buffer.append(\""
+            inner = $$('Regexp').$last_match(1).$gsub(/\\'/, "'").$gsub(/\\"/, "\"");
+            if ($truthy(inner['$=~']($$('BLOCK_EXPR')))) {
+              return "\")\noutput_buffer.append= " + (inner) + "\noutput_buffer.append(\""
             } else {
-              return "" + "\")\noutput_buffer.append=(" + (inner) + ")\noutput_buffer.append(\""
-            };}, $$8.$$s = self, $$8.$$arity = 0, $$8))
-        }, $Compiler_find_contents$7.$$arity = 1);
+              return "\")\noutput_buffer.append=(" + (inner) + ")\noutput_buffer.append(\""
+            };}, 0)
+        }, 1);
         
-        Opal.def(self, '$find_code', $Compiler_find_code$9 = function $$find_code(result) {
-          var $$10, self = this;
-
-          return $send(result, 'gsub', [/<%([\s\S]+?)%>/], ($$10 = function(){var self = $$10.$$s == null ? this : $$10.$$s, inner = nil;
+        $def(self, '$find_code', function $$find_code(result) {
+          
+          return $send(result, 'gsub', [/<%([\s\S]+?)%>/], function $$2(){var inner = nil;
 
             
-            inner = $$($nesting, 'Regexp').$last_match(1).$gsub(/\\"/, "\"");
-            return "" + "\")\n" + (inner) + "\noutput_buffer.append(\"";}, $$10.$$s = self, $$10.$$arity = 0, $$10))
-        }, $Compiler_find_code$9.$$arity = 1);
-        return (Opal.def(self, '$wrap_compiled', $Compiler_wrap_compiled$11 = function $$wrap_compiled(result) {
+            inner = $$('Regexp').$last_match(1).$gsub(/\\"/, "\"");
+            return "\")\n" + (inner) + "\noutput_buffer.append(\"";}, 0)
+        }, 1);
+        return $def(self, '$wrap_compiled', function $$wrap_compiled(result) {
           var self = this, path = nil;
 
           
-          path = self.file_name.$sub(Opal.regexp(["\\.opalerb", $$($nesting, 'REGEXP_END')]), "");
-          return "" + "Template.new('" + (path) + "') do |output_buffer|\noutput_buffer.append(\"" + (result) + "\")\noutput_buffer.join\nend\n";
-        }, $Compiler_wrap_compiled$11.$$arity = 1), nil) && 'wrap_compiled';
+          path = self.file_name.$sub($regexp(["\\.opalerb", $$('REGEXP_END')]), "");
+          return "Template.new('" + (path) + "') do |output_buffer|\noutput_buffer.append(\"" + (result) + "\")\noutput_buffer.join\nend\n";
+        }, 1);
       })($nesting[0], null, $nesting);
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/builder_processors"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $hash2 = Opal.hash2, $truthy = Opal.truthy, $send = Opal.send, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["opal/builder_processors"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $hash2 = Opal.hash2, $truthy = Opal.truthy, $rb_plus = Opal.rb_plus, $send = Opal.send, $def = Opal.def, $eqeq = Opal.eqeq, $Opal = Opal.Opal, $const_set = Opal.const_set, $send2 = Opal.send2, $find_super = Opal.find_super, $defs = Opal.defs, $to_a = Opal.to_a;
 
-  Opal.add_stubs(['$require', '$end_with?', '$+', '$dup', '$delete', '$cache', '$attr_reader', '$to_s', '$source', '$join', '$==', '$size', '$new', '$register_processor', '$is_a?', '$match', '$match_regexp', '$raise', '$inspect', '$handles', '$map', '$with_index', '$each_line', '$index', '$filename', '$mark_as_required', '$result', '$compiled', '$source_map', '$fetch', '$cache_key', '$compiler_for', '$compile', '$class', '$merge', '$requires', '$required_trees', '$extname', '$prepare', '$private', '$prepared_source', '$module_name']);
+  Opal.add_stubs('require,end_with?,+,dup,delete,cache,attr_reader,to_s,source,join,==,size,new,register_processor,is_a?,match,match_regexp,raise,inspect,handles,map,with_index,each_line,index,filename,mark_as_required,result,compiled,source_map,fetch,cache_key,compiler_for,compile,class,merge,requires,required_trees,autoloads,extname,prepare,private,prepared_source,module_name');
   
   self.$require("opal/compiler");
   self.$require("opal/erb");
@@ -40989,288 +37170,259 @@ Opal.modules["opal/builder_processors"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'BuilderProcessors');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
       (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'Processor');
 
-        var $nesting = [self].concat($parent_nesting), $Processor_initialize$1, $Processor_to_s$3, $Processor_mark_as_required$7;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.options = nil;
+        $proto.options = nil;
         
         
-        Opal.def(self, '$initialize', $Processor_initialize$1 = function $$initialize(source, filename, options) {
-          var $a, $$2, self = this;
+        $def(self, '$initialize', function $$initialize(source, filename, options) {
+          var $a, self = this;
 
           
           
-          if (options == null) {
-            options = $hash2([], {});
-          };
-          if ($truthy(source['$end_with?']("\n"))) {
-          } else {
+          if (options == null) options = $hash2([], {});;
+          if (!$truthy(source['$end_with?']("\n"))) {
             source = $rb_plus(source, "\n")
           };
           $a = [source, filename, options.$dup()], (self.source = $a[0]), (self.filename = $a[1]), (self.options = $a[2]), $a;
-          self.cache = $send(self.options, 'delete', ["cache"], ($$2 = function(){var self = $$2.$$s == null ? this : $$2.$$s;
-
-            return $$($nesting, 'Opal').$cache()}, $$2.$$s = self, $$2.$$arity = 0, $$2));
+          self.cache = $send(self.options, 'delete', ["cache"], function $$1(){
+            return $$('Opal').$cache()}, 0);
           self.requires = [];
-          return (self.required_trees = []);
-        }, $Processor_initialize$1.$$arity = -3);
-        self.$attr_reader("source", "filename", "options", "requires", "required_trees");
+          self.required_trees = [];
+          return (self.autoloads = []);
+        }, -3);
+        self.$attr_reader("source", "filename", "options", "requires", "required_trees", "autoloads");
         
-        Opal.def(self, '$to_s', $Processor_to_s$3 = function $$to_s() {
+        $def(self, '$to_s', function $$to_s() {
           var self = this;
 
           return self.$source().$to_s()
-        }, $Processor_to_s$3.$$arity = 0);
+        }, 0);
         (function(self, $parent_nesting) {
-          var $nesting = [self].concat($parent_nesting), $handles$4, $match$ques$5, $match_regexp$6;
+          var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
           
           self.$attr_reader("extensions");
           
-          Opal.def(self, '$handles', $handles$4 = function $$handles($a) {
+          $def(self, '$handles', function $$handles($a) {
             var $post_args, extensions, self = this, matches = nil;
 
             
             
-            $post_args = Opal.slice.call(arguments, 0, arguments.length);
+            $post_args = Opal.slice.call(arguments);
             
             extensions = $post_args;;
             self.extensions = extensions;
             matches = extensions.$join("|");
-            if (extensions.$size()['$=='](1)) {
-            } else {
-              matches = "" + "(" + (matches) + ")"
+            if (!$eqeq(extensions.$size(), 1)) {
+              matches = "(" + (matches) + ")"
             };
-            self.match_regexp = $$($nesting, 'Regexp').$new("" + "\\." + (matches) + ($$($nesting, 'REGEXP_END')));
-            $$$($$$('::', 'Opal'), 'Builder').$register_processor(self, extensions);
+            self.match_regexp = $$('Regexp').$new("\\." + (matches) + ($$('REGEXP_END')));
+            $$$($Opal, 'Builder').$register_processor(self, extensions);
             return nil;
-          }, $handles$4.$$arity = -1);
+          }, -1);
           
-          Opal.def(self, '$match?', $match$ques$5 = function(other) {
+          $def(self, '$match?', function $match$ques$2(other) {
             var self = this, $ret_or_1 = nil;
 
-            if ($truthy(($ret_or_1 = other['$is_a?']($$($nesting, 'String'))))) {
+            if ($truthy(($ret_or_1 = other['$is_a?']($$('String'))))) {
               return other.$match(self.$match_regexp())
             } else {
               return $ret_or_1
             }
-          }, $match$ques$5.$$arity = 1);
-          return (Opal.def(self, '$match_regexp', $match_regexp$6 = function $$match_regexp() {
-            var self = this, $ret_or_2 = nil;
+          }, 1);
+          return $def(self, '$match_regexp', function $$match_regexp() {
+            var self = this, $ret_or_1 = nil;
             if (self.match_regexp == null) self.match_regexp = nil;
 
-            if ($truthy(($ret_or_2 = self.match_regexp))) {
-              return $ret_or_2
+            if ($truthy(($ret_or_1 = self.match_regexp))) {
+              return $ret_or_1
             } else {
-              return self.$raise($$($nesting, 'NotImplementedError'))
+              return self.$raise($$('NotImplementedError'))
             }
-          }, $match_regexp$6.$$arity = 0), nil) && 'match_regexp';
+          }, 0);
         })(Opal.get_singleton_class(self), $nesting);
-        return (Opal.def(self, '$mark_as_required', $Processor_mark_as_required$7 = function $$mark_as_required(filename) {
-          var self = this;
-
-          return "" + "Opal.loaded([" + (filename.$to_s().$inspect()) + "]);"
-        }, $Processor_mark_as_required$7.$$arity = 1), nil) && 'mark_as_required';
+        return $def(self, '$mark_as_required', function $$mark_as_required(filename) {
+          
+          return "Opal.loaded([" + (filename.$to_s().$inspect()) + "]);"
+        }, 1);
       })($nesting[0], null, $nesting);
       (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'JsProcessor');
 
-        var $nesting = [self].concat($parent_nesting), $JsProcessor_source_map$8, $JsProcessor_source$10;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.source_map = self.$$prototype.source = self.$$prototype.filename = nil;
+        $proto.source_map = $proto.source = $proto.filename = nil;
         
         self.$handles("js");
-        Opal.const_set($nesting[0], 'ManualFragment', $$($nesting, 'Struct').$new("line", "column", "code", "source_map_name"));
+        $const_set($nesting[0], 'ManualFragment', $$('Struct').$new("line", "column", "code", "source_map_name"));
         
-        Opal.def(self, '$source_map', $JsProcessor_source_map$8 = function $$source_map() {
-          var $$9, self = this, $ret_or_3 = nil, manual_fragments = nil;
+        $def(self, '$source_map', function $$source_map() {
+          var self = this, $ret_or_1 = nil, manual_fragments = nil;
 
-          return (self.source_map = (function() {if ($truthy(($ret_or_3 = self.source_map))) {
-            return $ret_or_3
-          } else {
-            
-            manual_fragments = $send(self.$source().$each_line().$with_index(), 'map', [], ($$9 = function(line_source, index){var self = $$9.$$s == null ? this : $$9.$$s, column = nil, line = nil;
+          return (self.source_map = ($truthy(($ret_or_1 = self.source_map)) ? ($ret_or_1) : (((manual_fragments = $send(self.$source().$each_line().$with_index(), 'map', [], function $$3(line_source, index){var column = nil, line = nil;
 
-              
-              
-              if (line_source == null) {
-                line_source = nil;
-              };
-              
-              if (index == null) {
-                index = nil;
-              };
-              column = line_source.$index(/\S/);
-              line = $rb_plus(index, 1);
-              return $$($nesting, 'ManualFragment').$new(line, column, line_source, nil);}, $$9.$$s = self, $$9.$$arity = 2, $$9));
-            return $$$($$$($$$('::', 'Opal'), 'SourceMap'), 'File').$new(manual_fragments, self.$filename(), self.$source());
-          }; return nil; })())
-        }, $JsProcessor_source_map$8.$$arity = 0);
-        return (Opal.def(self, '$source', $JsProcessor_source$10 = function $$source() {
+            
+            
+            if (line_source == null) line_source = nil;;
+            
+            if (index == null) index = nil;;
+            column = line_source.$index(/\S/);
+            line = $rb_plus(index, 1);
+            return $$('ManualFragment').$new(line, column, line_source, nil);}, 2)), $$$($$$($Opal, 'SourceMap'), 'File').$new(manual_fragments, self.$filename(), self.$source())))))
+        }, 0);
+        return $def(self, '$source', function $$source() {
           var self = this;
 
           return $rb_plus(self.source.$to_s(), self.$mark_as_required(self.filename))
-        }, $JsProcessor_source$10.$$arity = 0), nil) && 'source';
-      })($nesting[0], $$($nesting, 'Processor'), $nesting);
+        }, 0);
+      })($nesting[0], $$('Processor'), $nesting);
       (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'RubyProcessor');
 
-        var $nesting = [self].concat($parent_nesting), $RubyProcessor_source$11, $RubyProcessor_source_map$12, $RubyProcessor_compiled$13, $RubyProcessor_cache_key$15, $RubyProcessor_compiler_for$16, $RubyProcessor_requires$17, $RubyProcessor_required_trees$18, $RubyProcessor_match$ques$19;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.compiled = self.$$prototype.cache = self.$$prototype.filename = self.$$prototype.source = self.$$prototype.options = nil;
+        $proto.compiled = $proto.cache = $proto.filename = $proto.source = $proto.options = nil;
         
         self.$handles("rb", "opal");
         
-        Opal.def(self, '$source', $RubyProcessor_source$11 = function $$source() {
+        $def(self, '$source', function $$source() {
           var self = this;
 
           return self.$compiled().$result()
-        }, $RubyProcessor_source$11.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$source_map', $RubyProcessor_source_map$12 = function $$source_map() {
+        $def(self, '$source_map', function $$source_map() {
           var self = this;
 
           return self.$compiled().$source_map()
-        }, $RubyProcessor_source_map$12.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compiled', $RubyProcessor_compiled$13 = function $$compiled() {
-          var $$14, self = this, $ret_or_4 = nil;
+        $def(self, '$compiled', function $$compiled() {
+          var self = this, $ret_or_1 = nil;
 
-          return (self.compiled = (function() {if ($truthy(($ret_or_4 = self.compiled))) {
-            return $ret_or_4
-          } else {
-            return $send($$$($$($nesting, 'Opal'), 'Cache'), 'fetch', [self.cache, self.$cache_key()], ($$14 = function(){var self = $$14.$$s == null ? this : $$14.$$s, compiler = nil;
-              if (self.source == null) self.source = nil;
-              if (self.filename == null) self.filename = nil;
+          return (self.compiled = ($truthy(($ret_or_1 = self.compiled)) ? ($ret_or_1) : ($send($$$($$('Opal'), 'Cache'), 'fetch', [self.cache, self.$cache_key()], function $$4(){var self = $$4.$$s == null ? this : $$4.$$s, compiler = nil;
+            if (self.source == null) self.source = nil;
+            if (self.filename == null) self.filename = nil;
 
-              
-              compiler = self.$compiler_for(self.source, $hash2(["file"], {"file": self.filename}));
-              compiler.$compile();
-              return compiler;}, $$14.$$s = self, $$14.$$arity = 0, $$14))
-          }; return nil; })())
-        }, $RubyProcessor_compiled$13.$$arity = 0);
+            
+            compiler = self.$compiler_for(self.source, $hash2(["file"], {"file": self.filename}));
+            compiler.$compile();
+            return compiler;}, {$$arity: 0, $$s: self}))))
+        }, 0);
         
-        Opal.def(self, '$cache_key', $RubyProcessor_cache_key$15 = function $$cache_key() {
+        $def(self, '$cache_key', function $$cache_key() {
           var self = this;
 
           return [self.$class(), self.filename, self.source, self.options]
-        }, $RubyProcessor_cache_key$15.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compiler_for', $RubyProcessor_compiler_for$16 = function $$compiler_for(source, options) {
+        $def(self, '$compiler_for', function $$compiler_for(source, options) {
           var self = this;
 
           
           
-          if (options == null) {
-            options = $hash2([], {});
-          };
-          return $$$($$$('::', 'Opal'), 'Compiler').$new(source, self.options.$merge(options));
-        }, $RubyProcessor_compiler_for$16.$$arity = -2);
+          if (options == null) options = $hash2([], {});;
+          return $$$($Opal, 'Compiler').$new(source, self.options.$merge(options));
+        }, -2);
         
-        Opal.def(self, '$requires', $RubyProcessor_requires$17 = function $$requires() {
+        $def(self, '$requires', function $$requires() {
           var self = this;
 
           return self.$compiled().$requires()
-        }, $RubyProcessor_requires$17.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$required_trees', $RubyProcessor_required_trees$18 = function $$required_trees() {
+        $def(self, '$required_trees', function $$required_trees() {
           var self = this;
 
           return self.$compiled().$required_trees()
-        }, $RubyProcessor_required_trees$18.$$arity = 0);
-        return (Opal.defs(self, '$match?', $RubyProcessor_match$ques$19 = function(other) {
-          var $iter = $RubyProcessor_match$ques$19.$$p, $yield = $iter || nil, self = this, $ret_or_5 = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
-
-          if ($iter) $RubyProcessor_match$ques$19.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
-          if ($truthy(($ret_or_5 = $send2(self, $find_super(self, 'match?', $RubyProcessor_match$ques$19, false, true), 'match?', $zuper, $iter)))) {
-            return $ret_or_5
+        }, 0);
+        
+        $def(self, '$autoloads', function $$autoloads() {
+          var self = this;
+
+          return self.$compiled().$autoloads()
+        }, 0);
+        return $defs(self, '$match?', function $RubyProcessor_match$ques$5(other) {
+          var $yield = $RubyProcessor_match$ques$5.$$p || nil, self = this, $ret_or_1 = nil;
+
+          delete $RubyProcessor_match$ques$5.$$p;
+          if ($truthy(($ret_or_1 = $send2(self, $find_super(self, 'match?', $RubyProcessor_match$ques$5, false, true), 'match?', [other], $yield)))) {
+            return $ret_or_1
           } else {
-            return $$($nesting, 'File').$extname(other.$to_s())['$==']("")
+            return $$('File').$extname(other.$to_s())['$==']("")
           }
-        }, $RubyProcessor_match$ques$19.$$arity = 1), nil) && 'match?';
-      })($nesting[0], $$($nesting, 'Processor'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 1);
+      })($nesting[0], $$('Processor'), $nesting);
+      (function($base, $super) {
         var self = $klass($base, $super, 'OpalERBProcessor');
 
-        var $nesting = [self].concat($parent_nesting), $OpalERBProcessor_initialize$20, $OpalERBProcessor_requires$21, $OpalERBProcessor_prepare$22;
+        var $proto = self.$$prototype;
 
-        self.$$prototype.source = self.$$prototype.filename = nil;
+        $proto.source = $proto.filename = nil;
         
         self.$handles("opalerb");
         
-        Opal.def(self, '$initialize', $OpalERBProcessor_initialize$20 = function $$initialize($a) {
-          var $post_args, args, $iter = $OpalERBProcessor_initialize$20.$$p, $yield = $iter || nil, self = this, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        $def(self, '$initialize', function $$initialize($a) {
+          var $post_args, args, $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $OpalERBProcessor_initialize$20.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$initialize.$$p;
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
           args = $post_args;;
-          $send2(self, $find_super(self, 'initialize', $OpalERBProcessor_initialize$20, false, true), 'initialize', $zuper, $iter);
+          $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', $to_a(args), $yield);
           return (self.source = self.$prepare(self.source, self.filename));
-        }, $OpalERBProcessor_initialize$20.$$arity = -1);
+        }, -1);
         
-        Opal.def(self, '$requires', $OpalERBProcessor_requires$21 = function $$requires() {
-          var $iter = $OpalERBProcessor_requires$21.$$p, $yield = $iter || nil, self = this, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        $def(self, '$requires', function $$requires() {
+          var $yield = $$requires.$$p || nil, self = this;
 
-          if ($iter) $OpalERBProcessor_requires$21.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
-          return $rb_plus(["erb"], $send2(self, $find_super(self, 'requires', $OpalERBProcessor_requires$21, false, true), 'requires', $zuper, $iter))
-        }, $OpalERBProcessor_requires$21.$$arity = 0);
+          delete $$requires.$$p;
+          return $rb_plus(["erb"], $send2(self, $find_super(self, 'requires', $$requires, false, true), 'requires', [], $yield))
+        }, 0);
         self.$private();
-        return (Opal.def(self, '$prepare', $OpalERBProcessor_prepare$22 = function $$prepare(source, path) {
-          var self = this;
-
-          return $$$($$$($$$('::', 'Opal'), 'ERB'), 'Compiler').$new(source, path).$prepared_source()
-        }, $OpalERBProcessor_prepare$22.$$arity = 2), nil) && 'prepare';
-      })($nesting[0], $$($nesting, 'RubyProcessor'), $nesting);
-      return (function($base, $super, $parent_nesting) {
+        return $def(self, '$prepare', function $$prepare(source, path) {
+          
+          return $$$($$$($Opal, 'ERB'), 'Compiler').$new(source, path).$prepared_source()
+        }, 2);
+      })($nesting[0], $$('RubyProcessor'));
+      return (function($base, $super) {
         var self = $klass($base, $super, 'ERBProcessor');
 
-        var $nesting = [self].concat($parent_nesting), $ERBProcessor_source$23;
+        var $proto = self.$$prototype;
 
-        self.$$prototype.source = self.$$prototype.filename = nil;
+        $proto.source = $proto.filename = nil;
         
         self.$handles("erb");
-        return (Opal.def(self, '$source', $ERBProcessor_source$23 = function $$source() {
+        return $def(self, '$source', function $$source() {
           var self = this, result = nil, module_name = nil;
 
           
-          result = $$$('::', 'ERB').$new(self.source.$to_s()).$result();
-          module_name = $$$($$$('::', 'Opal'), 'Compiler').$module_name(self.filename);
-          return "" + "Opal.modules[" + (module_name.$inspect()) + "] = function() {" + (result) + "};";
-        }, $ERBProcessor_source$23.$$arity = 0), nil) && 'source';
-      })($nesting[0], $$($nesting, 'Processor'), $nesting);
+          result = $$$('ERB').$new(self.source.$to_s()).$result();
+          module_name = $$$($Opal, 'Compiler').$module_name(self.filename);
+          return "Opal.modules[" + (module_name.$inspect()) + "] = function() {" + (result) + "};";
+        }, 0);
+      })($nesting[0], $$('Processor'));
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["base64"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $hash2 = Opal.hash2, $truthy = Opal.truthy;
+Opal.modules["base64"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $defs = Opal.defs, $hash2 = Opal.hash2, $truthy = Opal.truthy;
 
-  Opal.add_stubs(['$raise', '$delete']);
+  Opal.add_stubs('raise,delete');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Base64');
 
-    var $nesting = [self].concat($parent_nesting), $Base64_decode64$1, $Base64_encode64$2, $Base64_strict_decode64$3, $Base64_strict_encode64$4, $Base64_urlsafe_decode64$5, $Base64_urlsafe_encode64$6;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
     
@@ -41294,7 +37446,7 @@ Opal.modules["base64"] = function(Opal) {
       ) {
         charCode = str.charCodeAt(idx += 3/4);
         if (charCode > 0xFF) {
-          self.$raise($$($nesting, 'ArgumentError'), "invalid character (failed: The string to be encoded contains characters outside of the Latin1 range.)");
+          self.$raise($$('ArgumentError'), "invalid character (failed: The string to be encoded contains characters outside of the Latin1 range.)");
         }
         block = block << 8 | charCode;
       }
@@ -41307,7 +37459,7 @@ Opal.modules["base64"] = function(Opal) {
     decode = function (input) {
       var str = String(input).replace(/=+$/, '');
       if (str.length % 4 == 1) {
-        self.$raise($$($nesting, 'ArgumentError'), "invalid base64 (failed: The string to be decoded is not correctly encoded.)");
+        self.$raise($$('ArgumentError'), "invalid base64 (failed: The string to be decoded is not correctly encoded.)");
       }
       /* eslint-disable */
       for (
@@ -41328,33 +37480,28 @@ Opal.modules["base64"] = function(Opal) {
       /* eslint-enable */
     };
   ;
-    Opal.defs(self, '$decode64', $Base64_decode64$1 = function $$decode64(string) {
-      var self = this;
-
+    $defs(self, '$decode64', function $$decode64(string) {
+      
       return decode(string.replace(/\r?\n/g, ''));
-    }, $Base64_decode64$1.$$arity = 1);
-    Opal.defs(self, '$encode64', $Base64_encode64$2 = function $$encode64(string) {
-      var self = this;
-
+    }, 1);
+    $defs(self, '$encode64', function $$encode64(string) {
+      
       return encode(string).replace(/(.{60})/g, "$1\n").replace(/([^\n])$/g, "$1\n");
-    }, $Base64_encode64$2.$$arity = 1);
-    Opal.defs(self, '$strict_decode64', $Base64_strict_decode64$3 = function $$strict_decode64(string) {
-      var self = this;
-
+    }, 1);
+    $defs(self, '$strict_decode64', function $$strict_decode64(string) {
+      
       return decode(string);
-    }, $Base64_strict_decode64$3.$$arity = 1);
-    Opal.defs(self, '$strict_encode64', $Base64_strict_encode64$4 = function $$strict_encode64(string) {
-      var self = this;
-
+    }, 1);
+    $defs(self, '$strict_encode64', function $$strict_encode64(string) {
+      
       return encode(string);
-    }, $Base64_strict_encode64$4.$$arity = 1);
-    Opal.defs(self, '$urlsafe_decode64', $Base64_urlsafe_decode64$5 = function $$urlsafe_decode64(string) {
-      var self = this;
-
+    }, 1);
+    $defs(self, '$urlsafe_decode64', function $$urlsafe_decode64(string) {
+      
       return decode(string.replace(/\-/g, '+').replace(/_/g, '/'));
-    }, $Base64_urlsafe_decode64$5.$$arity = 1);
-    return (Opal.defs(self, '$urlsafe_encode64', $Base64_urlsafe_encode64$6 = function $$urlsafe_encode64(string, $kwargs) {
-      var padding, self = this, str = nil;
+    }, 1);
+    return $defs(self, '$urlsafe_encode64', function $$urlsafe_encode64(string, $kwargs) {
+      var padding, str = nil;
 
       
       
@@ -41365,29 +37512,24 @@ Opal.modules["base64"] = function(Opal) {
       };
       
       padding = $kwargs.$$smap["padding"];
-      if (padding == null) {
-        padding = true
-      };
+      if (padding == null) padding = true;
       str = encode(string).replace(/\+/g, '-').replace(/\//g, '_');
-      if ($truthy(padding)) {
-      } else {
+      if (!$truthy(padding)) {
         str = str.$delete("=")
       };
       return str;
-    }, $Base64_urlsafe_encode64$6.$$arity = -2), nil) && 'urlsafe_encode64';
+    }, -2);
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/pack_unpack/format_string_parser"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module;
+Opal.modules["corelib/pack_unpack/format_string_parser"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $Kernel = Opal.Kernel;
 
-  Opal.add_stubs(['$raise']);
-  return (function($base, $parent_nesting) {
+  Opal.add_stubs('raise');
+  return (function($base) {
     var self = $module($base, 'PackUnpack');
 
-    var $nesting = [self].concat($parent_nesting);
-
+    
     
     var directives = [
       // Integer
@@ -41473,11 +37615,11 @@ Opal.modules["corelib/pack_unpack/format_string_parser"] = function(Opal) {
         var directiveSupportsModifiers = /[sSiIlLqQjJ]/.test(currentDirective);
 
         if (!directiveSupportsModifiers && currentModifiers.length > 0) {
-          self.$raise($$($nesting, 'ArgumentError'), "" + "'" + (currentModifiers[0]) + "' allowed only after types sSiIlLqQjJ")
+          $Kernel.$raise($$$('ArgumentError'), "'" + (currentModifiers[0]) + "' allowed only after types sSiIlLqQjJ")
         }
 
         if (currentModifiers.indexOf('<') !== -1 && currentModifiers.indexOf('>') !== -1) {
-          self.$raise($$($nesting, 'RangeError'), "Can't use both '<' and '>'")
+          $Kernel.$raise($$$('RangeError'), "Can't use both '<' and '>'")
         }
 
         if (!countSpecified) {
@@ -41521,21 +37663,20 @@ Opal.modules["corelib/pack_unpack/format_string_parser"] = function(Opal) {
       yieldAndReset();
     }
   
-  })($nesting[0], $nesting)
+  })('::')
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/string/unpack"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass;
+Opal.modules["corelib/string/unpack"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $Kernel = Opal.Kernel, $hash2 = Opal.hash2, $truthy = Opal.truthy, $rb_lt = Opal.rb_lt, $Opal = Opal.Opal, $rb_gt = Opal.rb_gt, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$flatten', '$decode64', '$raise', '$delete', '$gsub', '$coerce_to!', '$inspect', '$[]', '$unpack']);
+  Opal.add_stubs('require,flatten,decode64,raise,<,delete,gsub,coerce_to!,>,length,inspect,[],unpack');
   
   self.$require("base64");
   self.$require("corelib/pack_unpack/format_string_parser");
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'String');
 
-    var $nesting = [self].concat($parent_nesting), $String_unpack$1, $String_unpack1$2, expected = nil, given = nil;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), expected = nil, given = nil;
 
     
     
@@ -41739,7 +37880,7 @@ Opal.modules["corelib/string/unpack"] = function(Opal) {
 
     function base64Decode(callback) {
       return function(data) {
-        return $$($nesting, 'Base64').$decode64(callback(data));
+        return $$('Base64').$decode64(callback(data));
       }
     }
 
@@ -41841,7 +37982,7 @@ Opal.modules["corelib/string/unpack"] = function(Opal) {
       }
 
       if (c >> 6 == 0x02) {
-        self.$raise($$($nesting, 'ArgumentError'), "malformed UTF-8 character")
+        $Kernel.$raise($$$('ArgumentError'), "malformed UTF-8 character")
       }
 
       if (c >> 5 == 0x06) {
@@ -41860,11 +38001,11 @@ Opal.modules["corelib/string/unpack"] = function(Opal) {
         // 1111 110x (six bytes)
         extraLength = 5;
       } else {
-        self.$raise("malformed UTF-8 character")
+        $Kernel.$raise("malformed UTF-8 character")
       }
 
       if (extraLength > bytesLength) {
-        ((expected = extraLength + 1), (given = bytesLength + 1), self.$raise($$($nesting, 'ArgumentError'), "" + "malformed UTF-8 character (expected " + (expected) + " bytes, given " + (given) + " bytes)"))
+        ((expected = extraLength + 1), (given = bytesLength + 1), $Kernel.$raise($$$('ArgumentError'), "malformed UTF-8 character (expected " + (expected) + " bytes, given " + (given) + " bytes)"))
       }
 
       // Remove the UTF-8 prefix from the char
@@ -41875,7 +38016,7 @@ Opal.modules["corelib/string/unpack"] = function(Opal) {
         c = readByte();
 
         if (c >> 6 != 0x02) {
-          self.$raise("Invalid multibyte sequence")
+          $Kernel.$raise("Invalid multibyte sequence")
         }
 
         result = (result << 6) | (c & 0x3f);
@@ -42207,11 +38348,23 @@ Opal.modules["corelib/string/unpack"] = function(Opal) {
     alias('L', 'V');
   ;
     
-    Opal.def(self, '$unpack', $String_unpack$1 = function $$unpack(format) {
-      var self = this;
+    $def(self, '$unpack', function $$unpack(format, $kwargs) {
+      var offset, self = this;
 
       
-      format = $$($nesting, 'Opal')['$coerce_to!'](format, $$($nesting, 'String'), "to_str").$gsub(/\s/, "").$delete("\u0000");
+      
+      if ($kwargs == null) {
+        $kwargs = $hash2([], {});
+      } else if (!$kwargs.$$is_hash) {
+        throw Opal.ArgumentError.$new('expected kwargs');
+      };
+      
+      offset = $kwargs.$$smap["offset"];
+      if (offset == null) offset = 0;
+      if ($truthy($rb_lt(offset, 0))) {
+        $Kernel.$raise($$$('ArgumentError'), "offset can't be negative")
+      };
+      format = $Opal['$coerce_to!'](format, $$$('String'), "to_str").$gsub(/\s/, "").$delete("\u0000");
       
       var output = [];
 
@@ -42223,7 +38376,7 @@ Opal.modules["corelib/string/unpack"] = function(Opal) {
         var cp, j = 0;
 
         output = new Array(self.length);
-        for (var i = 0; i < self.length; i++) {
+        for (var i = offset; i < self.length; i++) {
           cp = output[j++] = self.codePointAt(i);
           if (cp > 0xffff) i++;
         }
@@ -42232,6 +38385,10 @@ Opal.modules["corelib/string/unpack"] = function(Opal) {
 
       var buffer = self.$bytes();
 
+      ($truthy($rb_gt(offset, (buffer).$length())) ? ($Kernel.$raise($$$('ArgumentError'), "offset outside of string")) : nil)
+
+      buffer = buffer.slice(offset);
+
 
       // optimization
       var optimizedHandler = optimized[format];
@@ -42252,7 +38409,7 @@ Opal.modules["corelib/string/unpack"] = function(Opal) {
             chunkReader = readChunk[directive];
 
         if (chunkReader == null) {
-          self.$raise("" + "Unsupported unpack directive " + ((directive).$inspect()) + " (no chunk reader defined)")
+          $Kernel.$raise("Unsupported unpack directive " + ((directive).$inspect()) + " (no chunk reader defined)")
         }
 
         var chunkData = chunkReader(buffer, count);
@@ -42262,7 +38419,7 @@ Opal.modules["corelib/string/unpack"] = function(Opal) {
         var handler = handlers[directive];
 
         if (handler == null) {
-          self.$raise("" + "Unsupported unpack directive " + ((directive).$inspect()) + " (no handler defined)")
+          $Kernel.$raise("Unsupported unpack directive " + ((directive).$inspect()) + " (no handler defined)")
         }
 
         return handler(chunk);
@@ -42275,7 +38432,7 @@ Opal.modules["corelib/string/unpack"] = function(Opal) {
           var shouldAutocomplete = autocompletion[directive];
 
           if (shouldAutocomplete == null) {
-            self.$raise("" + "Unsupported unpack directive " + ((directive).$inspect()) + " (no autocompletion rule defined)")
+            $Kernel.$raise("Unsupported unpack directive " + ((directive).$inspect()) + " (no autocompletion rule defined)")
           }
 
           if (shouldAutocomplete) {
@@ -42288,22 +38445,30 @@ Opal.modules["corelib/string/unpack"] = function(Opal) {
 
       return output;
     ;
-    }, $String_unpack$1.$$arity = 1);
-    return (Opal.def(self, '$unpack1', $String_unpack1$2 = function $$unpack1(format) {
-      var self = this;
+    }, -2);
+    return $def(self, '$unpack1', function $$unpack1(format, $kwargs) {
+      var offset, self = this;
 
       
-      format = $$($nesting, 'Opal')['$coerce_to!'](format, $$($nesting, 'String'), "to_str").$gsub(/\s/, "").$delete("\u0000");
-      return self.$unpack(format['$[]'](0))['$[]'](0);
-    }, $String_unpack1$2.$$arity = 1), nil) && 'unpack1';
-  })($nesting[0], null, $nesting);
+      
+      if ($kwargs == null) {
+        $kwargs = $hash2([], {});
+      } else if (!$kwargs.$$is_hash) {
+        throw Opal.ArgumentError.$new('expected kwargs');
+      };
+      
+      offset = $kwargs.$$smap["offset"];
+      if (offset == null) offset = 0;
+      format = $Opal['$coerce_to!'](format, $$$('String'), "to_str").$gsub(/\s/, "").$delete("\u0000");
+      return self.$unpack(format['$[]'](0), $hash2(["offset"], {"offset": offset}))['$[]'](0);
+    }, -2);
+  })('::', null, $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal-builder"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$;
+Opal.modules["opal-builder"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, nil = Opal.nil;
 
-  Opal.add_stubs(['$require']);
+  Opal.add_stubs('require');
   
   self.$require("opal/builder");
   self.$require("opal/builder_processors");
diff --git a/opal/master/opal-builder.min.js b/opal/master/opal-builder.min.js
index 97d44c73..5aefb97a 100644
--- a/opal/master/opal-builder.min.js
+++ b/opal/master/opal-builder.min.js
@@ -1 +1 @@
-Opal.modules["opal/regexp_anchors"]=function(Opal){Opal.top;var $nesting=[],$$=(Opal.nil,Opal.$$$,Opal.$$),$module=Opal.module;return Opal.add_stubs(["$new"]),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return Opal.const_set($nesting[0],"REGEXP_START","^"),Opal.const_set($nesting[0],"REGEXP_END","$"),Opal.const_set($nesting[0],"FORBIDDEN_STARTING_IDENTIFIER_CHARS","\\u0001-\\u002F\\u003A-\\u0040\\u005B-\\u005E\\u0060\\u007B-\\u007F"),Opal.const_set($nesting[0],"FORBIDDEN_ENDING_IDENTIFIER_CHARS","\\u0001-\\u0020\\u0022-\\u002F\\u003A-\\u003E\\u0040\\u005B-\\u005E\\u0060\\u007B-\\u007F"),Opal.const_set($nesting[0],"INLINE_IDENTIFIER_REGEXP",$$($nesting,"Regexp").$new("[^"+$$($nesting,"FORBIDDEN_STARTING_IDENTIFIER_CHARS")+"]*[^"+$$($nesting,"FORBIDDEN_ENDING_IDENTIFIER_CHARS")+"]")),Opal.const_set($nesting[0],"FORBIDDEN_CONST_NAME_CHARS","\\u0001-\\u0020\\u0021-\\u002F\\u003B-\\u003F\\u0040\\u005B-\\u005E\\u0060\\u007B-\\u007F"),Opal.const_set($nesting[0],"CONST_NAME_REGEXP",$$($nesting,"Regexp").$new($$($nesting,"REGEXP_START")+"(::)?[A-Z][^"+$$($nesting,"FORBIDDEN_CONST_NAME_CHARS")+"]*"+$$($nesting,"REGEXP_END")))}($nesting[0],$nesting)},Opal.modules["corelib/comparable"]=function(Opal){function $rb_gt(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?rhs<lhs:lhs["$>"](rhs)}function $rb_lt(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs<rhs:lhs["$<"](rhs)}Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$falsy=Opal.falsy,$module=Opal.module,$truthy=Opal.truthy;return Opal.add_stubs(["$>","$<","$===","$raise","$class","$<=>","$equal?"]),function($base,$Comparable_clamp$7){var self=$module($base,"Comparable"),$nesting=[self].concat($Comparable_clamp$7),$case=nil;function normalize(what){return Opal.is_a(what,Opal.Integer)?what:$rb_gt(what,0)?1:$rb_lt(what,0)?-1:0}function cmp_or_fail(lhs,rhs){var cmp=lhs["$<=>"](rhs);return $falsy(cmp)&&function(lhs,class_name){$case=class_name,class_name=nil["$==="]($case)||(!0)["$==="]($case)||(!1)["$==="]($case)||$$($nesting,"Integer")["$==="]($case)||$$($nesting,"Float")["$==="]($case)?class_name.$inspect():class_name.$$class,self.$raise($$($nesting,"ArgumentError"),"comparison of "+lhs.$class()+" with "+class_name+" failed")}(lhs,rhs),normalize(cmp)}return Opal.def(self,"$==",$Comparable_clamp$7=function(other){var cmp;return!!$truthy(this["$equal?"](other))||this["$<=>"]!=Opal.Kernel["$<=>"]&&(this.$$comparable?(delete this.$$comparable,!1):!!$truthy(cmp=this["$<=>"](other))&&0==normalize(cmp))},$Comparable_clamp$7.$$arity=1),Opal.def(self,"$>",$Comparable_clamp$7=function(other){return 0<cmp_or_fail(this,other)},$Comparable_clamp$7.$$arity=1),Opal.def(self,"$>=",$Comparable_clamp$7=function(other){return 0<=cmp_or_fail(this,other)},$Comparable_clamp$7.$$arity=1),Opal.def(self,"$<",$Comparable_clamp$7=function(other){return cmp_or_fail(this,other)<0},$Comparable_clamp$7.$$arity=1),Opal.def(self,"$<=",$Comparable_clamp$7=function(other){return cmp_or_fail(this,other)<=0},$Comparable_clamp$7.$$arity=1),Opal.def(self,"$between?",$Comparable_clamp$7=function(min,max){return!$rb_lt(this,min)&&!$rb_gt(this,max)},$Comparable_clamp$7.$$arity=2),Opal.def(self,"$clamp",$Comparable_clamp$7=function(min,max){var c,excl;if(null==max&&(max=nil),max===nil&&(Opal.is_a(min,Opal.Range)||this.$raise($$($nesting,"TypeError"),"wrong argument type "+min.$class()+" (expected Range)"),excl=min.excl,max=min.end,min=min.begin,max!==nil&&excl&&this.$raise($$($nesting,"ArgumentError"),"cannot clamp with an exclusive range")),min!==nil&&max!==nil&&0<cmp_or_fail(min,max)&&this.$raise($$($nesting,"ArgumentError"),"min argument must be smaller than max argument"),min!==nil){if(0==(c=cmp_or_fail(this,min)))return this;if(c<0)return min}return max!==nil&&0<(c=cmp_or_fail(this,max))?max:this},$Comparable_clamp$7.$$arity=-2),nil&&"clamp"}($nesting[0],$nesting)},Opal.modules.pathname=function(Opal){function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send,$alias=Opal.alias,$module=Opal.module;return Opal.add_stubs(["$require","$include","$quote","$===","$to_s","$path","$respond_to?","$to_path","$is_a?","$nil?","$raise","$class","$==","$attr_reader","$!","$relative?","$chop_basename","$basename","$=~","$new","$source","$[]","$rindex","$sub","$absolute?","$expand_path","$plus","$unshift","$length","$!=","$empty?","$first","$shift","$+","$join","$dirname","$pop","$reverse_each","$directory?","$extname","$<=>","$nonzero?","$proc","$casecmp","$cleanpath","$inspect","$include?","$fill","$map","$entries"]),self.$require("corelib/comparable"),function($Pathname_entries$26,$Pathname_relative_path_from$25){var $Pathname$23,$Pathname$24,$nesting=[$Pathname_entries$26=$klass($Pathname_entries$26,null,"Pathname")].concat($Pathname_relative_path_from$25);$Pathname_entries$26.$$prototype.path=nil,$Pathname_entries$26.$include($$($nesting,"Comparable")),Opal.const_set($nesting[0],"SEPARATOR_PAT",Opal.regexp([$$($nesting,"Regexp").$quote($$$($$($nesting,"File"),"SEPARATOR"))])),Opal.def($Pathname_entries$26,"$initialize",$Pathname_relative_path_from$25=function(path){return $truthy($$($nesting,"Pathname")["$==="](path))?this.path=path.$path().$to_s():$truthy(path["$respond_to?"]("to_path"))?this.path=path.$to_path():$truthy(path["$is_a?"]($$($nesting,"String")))?this.path=path:$truthy(path["$nil?"]())?this.$raise($$($nesting,"TypeError"),"no implicit conversion of nil into String"):this.$raise($$($nesting,"TypeError"),"no implicit conversion of "+path.$class()+" into String"),this.path["$=="]("\0")?this.$raise($$($nesting,"ArgumentError")):nil},$Pathname_relative_path_from$25.$$arity=1),$Pathname_entries$26.$attr_reader("path"),Opal.def($Pathname_entries$26,"$==",$Pathname_relative_path_from$25=function(other){return other.$path()["$=="](this.path)},$Pathname_relative_path_from$25.$$arity=1),Opal.def($Pathname_entries$26,"$absolute?",$Pathname_relative_path_from$25=function(){return this["$relative?"]()["$!"]()},$Pathname_relative_path_from$25.$$arity=0),Opal.def($Pathname_entries$26,"$relative?",$Pathname_relative_path_from$25=function(){for(var $b,r,path=nil,path=this.path;$truthy(r=this.$chop_basename(path));)$b=r,path=null==($b=Opal.to_ary($b))[0]?nil:$b[0];return path["$=="]("")},$Pathname_relative_path_from$25.$$arity=0),Opal.def($Pathname_entries$26,"$chop_basename",$Pathname_relative_path_from$25=function(path){var base=$$($nesting,"File").$basename(path);return $truthy($$($nesting,"Regexp").$new("^"+$$$($$($nesting,"Pathname"),"SEPARATOR_PAT").$source()+"?$")["$=~"](base))?nil:[path["$[]"](0,path.$rindex(base)),base]},$Pathname_relative_path_from$25.$$arity=1),Opal.def($Pathname_entries$26,"$root?",$Pathname_relative_path_from$25=function(){return this.path["$=="]("/")},$Pathname_relative_path_from$25.$$arity=0),Opal.def($Pathname_entries$26,"$parent",$Pathname_relative_path_from$25=function(){var self=this,new_path=nil;return(new_path=self.path.$sub(/\/([^\/]+\/?$)/,""))["$=="]("")&&(new_path=$truthy(self["$absolute?"]())?"/":"."),$$($nesting,"Pathname").$new(new_path)},$Pathname_relative_path_from$25.$$arity=0),Opal.def($Pathname_entries$26,"$sub",$Pathname_relative_path_from$25=function($a){var args=Opal.slice.call(arguments,0,arguments.length);return $$($nesting,"Pathname").$new($send(this.path,"sub",Opal.to_a(args)))},$Pathname_relative_path_from$25.$$arity=-1),Opal.def($Pathname_entries$26,"$cleanpath",$Pathname_relative_path_from$25=function(){return Opal.normalize(this.path)},$Pathname_relative_path_from$25.$$arity=0),Opal.def($Pathname_entries$26,"$to_path",$Pathname_relative_path_from$25=function(){return this.path},$Pathname_relative_path_from$25.$$arity=0),Opal.def($Pathname_entries$26,"$hash",$Pathname_relative_path_from$25=function(){return this.path},$Pathname_relative_path_from$25.$$arity=0),Opal.def($Pathname_entries$26,"$expand_path",$Pathname_relative_path_from$25=function(){return $$($nesting,"Pathname").$new($$($nesting,"File").$expand_path(this.path))},$Pathname_relative_path_from$25.$$arity=0),Opal.def($Pathname_entries$26,"$+",$Pathname_relative_path_from$25=function(other){return $truthy($$($nesting,"Pathname")["$==="](other))||(other=$$($nesting,"Pathname").$new(other)),$$($nesting,"Pathname").$new(this.$plus(this.path,other.$to_s()))},$Pathname_relative_path_from$25.$$arity=1),Opal.def($Pathname_entries$26,"$plus",$Pathname_relative_path_from$25=function(path1,path2){for(var $b,$c,r2,basename2,suffix2,prefix2=nil,index_list2=nil,basename_list2=nil,prefix1=nil,$ret_or_1=nil,r1=nil,basename1=nil,$ret_or_2=nil,$ret_or_3=nil,$ret_or_4=nil,$ret_or_5=nil,prefix2=path2,index_list2=[],basename_list2=[];$truthy(r2=this.$chop_basename(prefix2));)$c=r2,prefix2=null==($b=Opal.to_ary($c))[0]?nil:$b[0],basename2=null==$b[1]?nil:$b[1],index_list2.$unshift(prefix2.$length()),basename_list2.$unshift(basename2);if($truthy(prefix2["$!="]("")))return path2;for(prefix1=path1;$truthy(!0);){for(;$truthy($truthy($ret_or_1=basename_list2["$empty?"]()["$!"]())?basename_list2.$first()["$=="]("."):$ret_or_1);)index_list2.$shift(),basename_list2.$shift();if(!$truthy(r1=this.$chop_basename(prefix1)))break;if($c=r1,$b=Opal.to_ary($c),prefix1=null==$b[0]?nil:$b[0],!(basename1=null==$b[1]?nil:$b[1])["$=="](".")){if($truthy($truthy($ret_or_2=$truthy($ret_or_3=basename1["$=="](".."))?$ret_or_3:basename_list2["$empty?"]())?$ret_or_2:basename_list2.$first()["$!="](".."))){prefix1=$rb_plus(prefix1,basename1);break}index_list2.$shift(),basename_list2.$shift()}}if(r1=this.$chop_basename(prefix1),$truthy($truthy($ret_or_4=r1["$!"]())?Opal.regexp([$$($nesting,"SEPARATOR_PAT")])["$=~"]($$($nesting,"File").$basename(prefix1)):$ret_or_4))for(;$truthy($truthy($ret_or_5=basename_list2["$empty?"]()["$!"]())?basename_list2.$first()["$=="](".."):$ret_or_5);)index_list2.$shift(),basename_list2.$shift();return $truthy(basename_list2["$empty?"]()["$!"]())?(suffix2=path2["$[]"](Opal.Range.$new(index_list2.$first(),-1,!1)),$truthy(r1)?$$($nesting,"File").$join(prefix1,suffix2):$rb_plus(prefix1,suffix2)):$truthy(r1)?prefix1:$$($nesting,"File").$dirname(prefix1)},$Pathname_relative_path_from$25.$$arity=2),Opal.def($Pathname_entries$26,"$join",$Pathname_relative_path_from$25=function($a){try{var $$16,result=nil,args=Opal.slice.call(arguments,0,arguments.length);return $truthy(args["$empty?"]())?this:(result=args.$pop(),$truthy($$($nesting,"Pathname")["$==="](result))||(result=$$($nesting,"Pathname").$new(result)),$truthy(result["$absolute?"]())?result:($send(args,"reverse_each",[],(($$16=function(arg){null==$$16.$$s||$$16.$$s;if(null==arg&&(arg=nil),$truthy($$($nesting,"Pathname")["$==="](arg))||(arg=$$($nesting,"Pathname").$new(arg)),result=$rb_plus(arg,result),!$truthy(result["$absolute?"]()))return nil;Opal.ret(result)}).$$s=this,$$16.$$arity=1,$$16)),$rb_plus(this,result)))}catch($returner){if($returner===Opal.returner)return $returner.$v;throw $returner}},$Pathname_relative_path_from$25.$$arity=-1),Opal.def($Pathname_entries$26,"$split",$Pathname_relative_path_from$25=function(){return[this.$dirname(),this.$basename()]},$Pathname_relative_path_from$25.$$arity=0),Opal.def($Pathname_entries$26,"$dirname",$Pathname_relative_path_from$25=function(){return $$($nesting,"Pathname").$new($$($nesting,"File").$dirname(this.path))},$Pathname_relative_path_from$25.$$arity=0),Opal.def($Pathname_entries$26,"$basename",$Pathname_relative_path_from$25=function(){return $$($nesting,"Pathname").$new($$($nesting,"File").$basename(this.path))},$Pathname_relative_path_from$25.$$arity=0),Opal.def($Pathname_entries$26,"$directory?",$Pathname_relative_path_from$25=function(){return 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$$8,$$9,gem_dir,paths=nil,spec=nil,paths=[],spec=$$$($$($nesting,"Gem"),"Specification").$find_by_name(gem_name);return $truthy(spec)||this.$raise($$($nesting,"GemNotFound"),gem_name),$truthy(include_dependencies)&&$send(spec.$runtime_dependencies(),"each",[],(($$8=function(rhs){var lhs,self=null==$$8.$$s?this:$$8.$$s;return null==rhs&&(rhs=nil),lhs=paths,rhs=self.$require_paths_for_gem(rhs.$name(),include_dependencies),paths="number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}).$$s=this,$$8.$$arity=1,$$8)),gem_dir=spec.$gem_dir(),$send(spec.$require_paths(),"map",[],(($$9=function(path){null==$$9.$$s||$$9.$$s;return null==path&&(path=nil),paths["$<<"]($$($nesting,"File").$join(gem_dir,path))}).$$s=this,$$9.$$arity=1,$$9)),paths},$UseGem_require_paths_for_gem$7.$$arity=2)}($nesting[0],$nesting),self.$extend($$($nesting,"UseGem")),Opal.defs(self,"$paths",$Opal_reset_paths$excl$11=function(){return 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this.racc_state=[0],this.racc_tstack=[],this.racc_vstack=[],this.racc_t=nil,this.racc_val=nil,this.racc_read_next=!0,this.racc_user_yyerror=!1,this.racc_error_status=0},$Parser_racc_token2str$30.$$arity=0),Opal.def($Parser_token_to_str$31,"$do_parse",$Parser_racc_token2str$30=function(){return this.$__send__($$($nesting,"Racc_Main_Parsing_Routine"),this.$_racc_setup(),!1)},$Parser_racc_token2str$30.$$arity=0),Opal.def($Parser_token_to_str$31,"$next_token",$Parser_racc_token2str$30=function(){return this.$raise($$($nesting,"NotImplementedError"),this.$class()+"#next_token is not defined")},$Parser_racc_token2str$30.$$arity=0),Opal.def($Parser_token_to_str$31,"$_racc_do_parse_rb",$Parser_racc_token2str$30=function(arg){var $$7,tok,action_table=nil,action_check=nil,action_default=nil,action_pointer=nil,token_table=nil,act=nil,i=nil,$a=arg,$a=Opal.to_ary($a),action_table=null==$a[0]?nil:$a[0],action_check=null==$a[1]?nil:$a[1],action_default=null==$a[2]?nil:$a[2],action_pointer=null==$a[3]?nil:$a[3];null==$a[4]||$a[4];return null==$a[5]||$a[5],null==$a[6]||$a[6],null==$a[7]||$a[7],null==$a[8]||$a[8],null==$a[9]||$a[9],token_table=null==$a[10]?nil:$a[10],null==$a[11]||$a[11],null==$a[12]||$a[12],null==$a[13]||$a[13],this.$_racc_init_sysvars(),act=i=nil,$send(this,"catch",["racc_end_parse"],(($$7=function(){var $d,self=null==$$7.$$s?this:$$7.$$s,$ret_or_2=nil,$ret_or_3=nil,$ret_or_4=nil;for(null==self.racc_state&&(self.racc_state=nil),null==self.racc_read_next&&(self.racc_read_next=nil),null==self.racc_t&&(self.racc_t=nil),null==self.yydebug&&(self.yydebug=nil),null==self.racc_val&&(self.racc_val=nil);$truthy(!0);)for($truthy(i=action_pointer["$[]"](self.racc_state["$[]"](-1)))?($truthy(self.racc_read_next)&&$truthy(self.racc_t["$!="](0))&&($d=self.$next_token(),$d=Opal.to_ary($d),tok=null==$d[0]?nil:$d[0],self.racc_val=null==$d[1]?nil:$d[1],$truthy(tok)?self.racc_t=$truthy($ret_or_2=token_table["$[]"](tok))?$ret_or_2:1:self.racc_t=0,$truthy(self.yydebug)&&self.$racc_read_token(self.racc_t,tok,self.racc_val),self.racc_read_next=!1),i=$rb_plus(i,self.racc_t),$truthy($truthy($ret_or_3=$truthy($ret_or_4=$rb_ge(i,0))?act=action_table["$[]"](i):$ret_or_4)?action_check["$[]"](i)["$=="](self.racc_state["$[]"](-1)):$ret_or_3)||(act=action_default["$[]"](self.racc_state["$[]"](-1)))):act=action_default["$[]"](self.racc_state["$[]"](-1));$truthy(act=self.$_racc_evalact(act,arg)););}).$$s=this,$$7.$$arity=0,$$7))},$Parser_racc_token2str$30.$$arity=2),Opal.def($Parser_token_to_str$31,"$yyparse",$Parser_racc_token2str$30=function(recv,mid){return this.$__send__($$($nesting,"Racc_YY_Parse_Method"),recv,mid,this.$_racc_setup(),!0)},$Parser_racc_token2str$30.$$arity=2),Opal.def($Parser_token_to_str$31,"$_racc_yyparse_rb",$Parser_racc_token2str$30=function(recv,mid,arg){var $$10,action_table=nil,action_check=nil,action_default=nil,action_pointer=nil,token_table=nil,act=nil,i=nil,$a=arg,$a=Opal.to_ary($a),action_table=null==$a[0]?nil:$a[0],action_check=null==$a[1]?nil:$a[1],action_default=null==$a[2]?nil:$a[2],action_pointer=null==$a[3]?nil:$a[3];null==$a[4]||$a[4];return null==$a[5]||$a[5],null==$a[6]||$a[6],null==$a[7]||$a[7],null==$a[8]||$a[8],null==$a[9]||$a[9],token_table=null==$a[10]?nil:$a[10],null==$a[11]||$a[11],null==$a[12]||$a[12],null==$a[13]||$a[13],this.$_racc_init_sysvars(),i=act=nil,$send(this,"catch",["racc_end_parse"],(($$10=function(){var $$11,self=null==$$10.$$s?this:$$10.$$s;for(null==self.racc_state&&(self.racc_state=nil);!$truthy(i=action_pointer["$[]"](self.racc_state["$[]"](-1)));)for(;$truthy(act=self.$_racc_evalact(action_default["$[]"](self.racc_state["$[]"](-1)),arg)););return $send(recv,"__send__",[mid],(($$11=function(tok,val){var self=null==$$11.$$s?this:$$11.$$s,$ret_or_5=nil,$ret_or_6=nil,$ret_or_7=nil,$ret_or_8=nil,$ret_or_9=nil,$ret_or_10=nil,$ret_or_11=nil,$ret_or_12=nil,$ret_or_13=nil;for(null==self.racc_t&&(self.racc_t=nil),null==self.racc_state&&(self.racc_state=nil),null==self.racc_read_next&&(self.racc_read_next=nil),null==tok&&(tok=nil),null==val&&(val=nil),$truthy(tok)?self.racc_t=$truthy($ret_or_5=token_table["$[]"](tok))?$ret_or_5:1:self.racc_t=0,self.racc_val=val,self.racc_read_next=!1,i=$rb_plus(i,self.racc_t),$truthy($truthy($ret_or_6=$truthy($ret_or_7=$rb_ge(i,0))?act=action_table["$[]"](i):$ret_or_7)?action_check["$[]"](i)["$=="](self.racc_state["$[]"](-1)):$ret_or_6)||(act=action_default["$[]"](self.racc_state["$[]"](-1)));$truthy(act=self.$_racc_evalact(act,arg)););for(;$truthy($truthy($ret_or_8=$truthy($ret_or_9=(i=action_pointer["$[]"](self.racc_state["$[]"](-1)))["$!"]())?$ret_or_9:self.racc_read_next["$!"]())?$ret_or_8:self.racc_t["$=="](0));)for($truthy($truthy($ret_or_10=$truthy($ret_or_11=$truthy($ret_or_12=$truthy($ret_or_13=i)?i=$rb_plus(i,self.racc_t):$ret_or_13)?$rb_ge(i,0):$ret_or_12)?act=action_table["$[]"](i):$ret_or_11)?action_check["$[]"](i)["$=="](self.racc_state["$[]"](-1)):$ret_or_10)||(act=action_default["$[]"](self.racc_state["$[]"](-1)));$truthy(act=self.$_racc_evalact(act,arg)););}).$$s=self,$$11.$$arity=2,$$11))}).$$s=this,$$10.$$arity=0,$$10))},$Parser_racc_token2str$30.$$arity=4),Opal.def($Parser_token_to_str$31,"$_racc_evalact",$Parser_racc_token2str$30=function(act,arg){var $$13,shift_n,code,i,lhs,rhs,self=this,action_table=nil,action_check=nil,action_pointer=nil,reduce_n=nil,$ret_or_14=nil,$ret_or_15=nil,$case=nil,$ret_or_16=nil,$ret_or_17=nil,$a=arg,$a=Opal.to_ary($a),action_table=null==$a[0]?nil:$a[0],action_check=null==$a[1]?nil:$a[1],action_pointer=(null==$a[2]||$a[2],null==$a[3]?nil:$a[3]);if(null==$a[4]||$a[4],null==$a[5]||$a[5],null==$a[6]||$a[6],null==$a[7]||$a[7],null==$a[8]||$a[8],null==$a[9]||$a[9],null==$a[10]||$a[10],shift_n=null==$a[11]?nil:$a[11],reduce_n=null==$a[12]?nil:$a[12],null==$a[13]||$a[13],null==$a[14]||$a[14],$truthy($truthy($ret_or_14=$rb_gt(act,0))?$rb_lt(act,shift_n):$ret_or_14))$truthy($rb_gt(self.racc_error_status,0))&&(self.racc_t["$=="](1)||(self.racc_error_status=$rb_minus(self.racc_error_status,1))),self.racc_vstack.$push(self.racc_val),self.racc_state.$push(act),self.racc_read_next=!0,$truthy(self.yydebug)&&(self.racc_tstack.$push(self.racc_t),self.$racc_shift(self.racc_t,self.racc_tstack,self.racc_vstack));else if($truthy($truthy($ret_or_15=$rb_lt(act,0))?$rb_gt(act,reduce_n["$-@"]()):$ret_or_15)){if(code=$send(self,"catch",["racc_jump"],(($$13=function(){var self=null==$$13.$$s?this:$$13.$$s;return null==self.racc_state&&(self.racc_state=nil),self.racc_state.$push(self.$_racc_do_reduce(arg,act)),!1}).$$s=self,$$13.$$arity=0,$$13)),$truthy(code)){if(1["$==="]($case=code))return self.racc_user_yyerror=!0,reduce_n["$-@"]();if(2["$==="]($case))return shift_n;self.$raise("[Racc Bug] unknown jump code")}}else if(act["$=="](shift_n))$truthy(self.yydebug)&&self.$racc_accept(),self.$throw("racc_end_parse",self.racc_vstack["$[]"](0));else{if(act["$=="](reduce_n["$-@"]())){for($case=self.racc_error_status,0["$==="]($case)?$truthy(arg["$[]"](21))||self.$on_error(self.racc_t,self.racc_val,self.racc_vstack):3["$==="]($case)&&(self.racc_t["$=="](0)&&self.$throw("racc_end_parse",nil),self.racc_read_next=!0),self.racc_user_yyerror=!1,self.racc_error_status=3;$truthy(!0)&&(!$truthy(i=action_pointer["$[]"](self.racc_state["$[]"](-1)))||(i=$rb_plus(i,1),!$truthy($truthy($ret_or_16=$truthy($ret_or_17=$rb_ge(i,0))?act=action_table["$[]"](i):$ret_or_17)?action_check["$[]"](i)["$=="](self.racc_state["$[]"](-1)):$ret_or_16)));)$truthy((lhs=self.racc_state.$size(),rhs=1,"number"==typeof lhs&&"number"==typeof rhs?lhs<=rhs:lhs["$<="](rhs)))&&self.$throw("racc_end_parse",nil),self.racc_state.$pop(),self.racc_vstack.$pop(),$truthy(self.yydebug)&&(self.racc_tstack.$pop(),self.$racc_e_pop(self.racc_state,self.racc_tstack,self.racc_vstack));return act}self.$raise("[Racc Bug] unknown action "+act.$inspect())}return $truthy(self.yydebug)&&self.$racc_next_state(self.racc_state["$[]"](-1),self.racc_state),nil},$Parser_racc_token2str$30.$$arity=2),Opal.def($Parser_token_to_str$31,"$_racc_do_reduce",$Parser_racc_token2str$30=function(rhs,lhs){var nt_base,use_result,reduce_to,method_id,void_array,k1,goto_table=nil,goto_check=nil,goto_default=nil,goto_pointer=nil,reduce_table=nil,state=nil,vstack=nil,tstack=nil,i=nil,len=nil,tmp_t=nil,tmp_v=nil,$writer=nil,$ret_or_18=nil,$ret_or_19=nil,curstate=nil,rhs=rhs,rhs=Opal.to_ary(rhs);null==rhs[0]||rhs[0];return null==rhs[1]||rhs[1],null==rhs[2]||rhs[2],null==rhs[3]||rhs[3],goto_table=null==rhs[4]?nil:rhs[4],goto_check=null==rhs[5]?nil:rhs[5],goto_default=null==rhs[6]?nil:rhs[6],goto_pointer=null==rhs[7]?nil:rhs[7],nt_base=null==rhs[8]?nil:rhs[8],reduce_table=null==rhs[9]?nil:rhs[9],null==rhs[10]||rhs[10],null==rhs[11]||rhs[11],null==rhs[12]||rhs[12],use_result=null==rhs[13]?nil:rhs[13],state=this.racc_state,vstack=this.racc_vstack,tstack=this.racc_tstack,rhs=-3,i="number"==typeof(lhs=lhs)&&"number"==typeof rhs?lhs*rhs:lhs["$*"](rhs),len=reduce_table["$[]"](i),reduce_to=reduce_table["$[]"]($rb_plus(i,1)),method_id=reduce_table["$[]"]($rb_plus(i,2)),void_array=[],$truthy(this.yydebug)&&(tmp_t=tstack["$[]"](len["$-@"](),len)),tmp_v=vstack["$[]"](len["$-@"](),len),$truthy(this.yydebug)&&($writer=[len["$-@"](),len,void_array],$send(tstack,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]),$writer=[len["$-@"](),len,void_array],$send(vstack,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)],$writer=[len["$-@"](),len,void_array],$send(state,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)],$truthy(use_result)?vstack.$push(this.$__send__(method_id,tmp_v,vstack,tmp_v["$[]"](0))):vstack.$push(this.$__send__(method_id,tmp_v,vstack)),tstack.$push(reduce_to),$truthy(this.yydebug)&&this.$racc_reduce(tmp_t,reduce_to,tstack,vstack),k1=$rb_minus(reduce_to,nt_base),$truthy(i=goto_pointer["$[]"](k1))&&(i=$rb_plus(i,state["$[]"](-1)),$truthy($truthy($ret_or_18=$truthy($ret_or_19=$rb_ge(i,0))?curstate=goto_table["$[]"](i):$ret_or_19)?goto_check["$[]"](i)["$=="](k1):$ret_or_18))?curstate:goto_default["$[]"](k1)},$Parser_racc_token2str$30.$$arity=2),Opal.def($Parser_token_to_str$31,"$on_error",$Parser_racc_token2str$30=function(t,val){var self=this,$ret_or_20=nil;return self.$raise($$($nesting,"ParseError"),self.$sprintf("\nparse error on value %s (%s)",val.$inspect(),$truthy($ret_or_20=self.$token_to_str(t))?$ret_or_20:"?"))},$Parser_racc_token2str$30.$$arity=3),Opal.def($Parser_token_to_str$31,"$yyerror",$Parser_racc_token2str$30=function(){return this.$throw("racc_jump",1)},$Parser_racc_token2str$30.$$arity=0),Opal.def($Parser_token_to_str$31,"$yyaccept",$Parser_racc_token2str$30=function(){return this.$throw("racc_jump",2)},$Parser_racc_token2str$30.$$arity=0),Opal.def($Parser_token_to_str$31,"$yyerrok",$Parser_racc_token2str$30=function(){return this.racc_error_status=0},$Parser_racc_token2str$30.$$arity=0),Opal.def($Parser_token_to_str$31,"$racc_read_token",$Parser_racc_token2str$30=function(t,tok,val){return this.racc_debug_out.$print("read    "),this.racc_debug_out.$print(tok.$inspect(),"(",this.$racc_token2str(t),") "),this.racc_debug_out.$puts(val.$inspect()),this.racc_debug_out.$puts()},$Parser_racc_token2str$30.$$arity=3),Opal.def($Parser_token_to_str$31,"$racc_shift",$Parser_racc_token2str$30=function(tok,tstack,vstack){return this.racc_debug_out.$puts("shift   "+this.$racc_token2str(tok)),this.$racc_print_stacks(tstack,vstack),this.racc_debug_out.$puts()},$Parser_racc_token2str$30.$$arity=3),Opal.def($Parser_token_to_str$31,"$racc_reduce",$Parser_racc_token2str$30=function(toks,sim,tstack,vstack){var $$22,out=nil;return(out=this.racc_debug_out).$print("reduce "),$truthy(toks["$empty?"]())?out.$print(" <none>"):$send(toks,"each",[],(($$22=function(t){var self=null==$$22.$$s?this:$$22.$$s;return null==t&&(t=nil),out.$print(" ",self.$racc_token2str(t))}).$$s=this,$$22.$$arity=1,$$22)),out.$puts(" --\x3e "+this.$racc_token2str(sim)),this.$racc_print_stacks(tstack,vstack),this.racc_debug_out.$puts()},$Parser_racc_token2str$30.$$arity=4),Opal.def($Parser_token_to_str$31,"$racc_accept",$Parser_racc_token2str$30=function(){return this.racc_debug_out.$puts("accept"),this.racc_debug_out.$puts()},$Parser_racc_token2str$30.$$arity=0),Opal.def($Parser_token_to_str$31,"$racc_e_pop",$Parser_racc_token2str$30=function(state,tstack,vstack){return this.racc_debug_out.$puts("error recovering mode: pop token"),this.$racc_print_states(state),this.$racc_print_stacks(tstack,vstack),this.racc_debug_out.$puts()},$Parser_racc_token2str$30.$$arity=3),Opal.def($Parser_token_to_str$31,"$racc_next_state",$Parser_racc_token2str$30=function(curstate,state){return this.racc_debug_out.$puts("goto    "+curstate),this.$racc_print_states(state),this.racc_debug_out.$puts()},$Parser_racc_token2str$30.$$arity=2),Opal.def($Parser_token_to_str$31,"$racc_print_stacks",$Parser_racc_token2str$30=function(t,v){var $$27,out=nil;return(out=this.racc_debug_out).$print("        ["),$send(t,"each_index",[],(($$27=function(i){var self=null==$$27.$$s?this:$$27.$$s;return null==i&&(i=nil),out.$print(" (",self.$racc_token2str(t["$[]"](i))," ",v["$[]"](i).$inspect(),")")}).$$s=this,$$27.$$arity=1,$$27)),out.$puts(" ]")},$Parser_racc_token2str$30.$$arity=2),Opal.def($Parser_token_to_str$31,"$racc_print_states",$Parser_racc_token2str$30=function(s){var $$29,out=nil;return(out=this.racc_debug_out).$print("        ["),$send(s,"each",[],(($$29=function(st){null==$$29.$$s||$$29.$$s;return null==st&&(st=nil),out.$print(" ",st)}).$$s=this,$$29.$$arity=1,$$29)),out.$puts(" ]")},$Parser_racc_token2str$30.$$arity=1),Opal.def($Parser_token_to_str$31,"$racc_token2str",$Parser_racc_token2str$30=function(tok){var $ret_or_21;return $truthy($ret_or_21=$$$(this.$class(),"Racc_token_to_s_table")["$[]"](tok))?$ret_or_21:this.$raise("[Racc Bug] can't convert token "+tok+" to string")},$Parser_racc_token2str$30.$$arity=1),Opal.def($Parser_token_to_str$31,"$token_to_str",$Parser_token_to_str$31=function(t){return $$$(this.$class(),"Racc_token_to_s_table")["$[]"](t)},$Parser_token_to_str$31.$$arity=1),nil&&"token_to_str"}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/version"]=function(Opal){Opal.top;var $nesting=[],$module=(Opal.nil,Opal.$$$,Opal.$$,Opal.module);return function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return Opal.const_set($nesting[0],"VERSION","3.1.1.0")}($nesting[0],$nesting)},Opal.modules["racc/parser"]=function(Opal){function $rb_lt(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs<rhs:lhs["$<"](rhs)}function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}function $rb_ge(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?rhs<=lhs:lhs["$>="](rhs)}function $rb_gt(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?rhs<lhs:lhs["$>"](rhs)}Opal.top;var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$gvars=Opal.gvars,$send=Opal.send;return Opal.add_stubs(["$[]","$class","$<","$size","$[]=","$-","$__send__","$_racc_setup","$raise","$_racc_init_sysvars","$catch","$!=","$next_token","$racc_read_token","$+","$>=","$==","$_racc_evalact","$!","$>","$push","$racc_shift","$-@","$_racc_do_reduce","$===","$racc_accept","$throw","$on_error","$<=","$pop","$racc_e_pop","$inspect","$racc_next_state","$*","$racc_reduce","$sprintf","$token_to_str","$print","$racc_token2str","$puts","$racc_print_stacks","$empty?","$each","$racc_print_states","$each_index"]),function($base,$nesting){!function($base,$super,$parent_nesting){[$klass($base,$super,"ParseError")].concat($parent_nesting)}(($nesting=[$module($base,"Racc")].concat($nesting))[0],$$($nesting,"StandardError"),$nesting)}($nesting[0],$nesting),$truthy($$$("::","ParseError","skip_raise")?"constant":nil)||Opal.const_set($nesting[0],"ParseError",$$$($$($nesting,"Racc"),"ParseError")),function($base,$nesting){$nesting=[$module($base,"Racc")].concat($nesting);return $truthy($$($nesting,"Racc_No_Extensions","skip_raise")?"constant":nil)||Opal.const_set($nesting[0],"Racc_No_Extensions",!1),function($Parser_token_to_str$31,$Parser_racc_token2str$30){var $Parser_token_to_str$31=$klass($Parser_token_to_str$31,null,"Parser"),$nesting=[$Parser_token_to_str$31].concat($Parser_racc_token2str$30);return $Parser_token_to_str$31.$$prototype.yydebug=$Parser_token_to_str$31.$$prototype.racc_debug_out=$Parser_token_to_str$31.$$prototype.racc_error_status=$Parser_token_to_str$31.$$prototype.racc_t=$Parser_token_to_str$31.$$prototype.racc_vstack=$Parser_token_to_str$31.$$prototype.racc_val=$Parser_token_to_str$31.$$prototype.racc_state=$Parser_token_to_str$31.$$prototype.racc_tstack=nil,Opal.const_set($nesting[0],"Racc_Runtime_Version","1.4.6"),Opal.const_set($nesting[0],"Racc_Runtime_Revision",["originalRevision:","1.8"]["$[]"](1)),Opal.const_set($nesting[0],"Racc_Runtime_Core_Version_R","1.4.6"),Opal.const_set($nesting[0],"Racc_Runtime_Core_Revision_R",["originalRevision:","1.8"]["$[]"](1)),Opal.const_set($nesting[0],"Racc_Main_Parsing_Routine","_racc_do_parse_rb"),Opal.const_set($nesting[0],"Racc_YY_Parse_Method","_racc_yyparse_rb"),Opal.const_set($nesting[0],"Racc_Runtime_Core_Version",$$($nesting,"Racc_Runtime_Core_Version_R")),Opal.const_set($nesting[0],"Racc_Runtime_Core_Revision",$$($nesting,"Racc_Runtime_Core_Revision_R")),Opal.const_set($nesting[0],"Racc_Runtime_Type","ruby"),Opal.defs($$($nesting,"Parser"),"$racc_runtime_type",$Parser_racc_token2str$30=function(){return $$($nesting,"Racc_Runtime_Type")},$Parser_racc_token2str$30.$$arity=0),Opal.def($Parser_token_to_str$31,"$_racc_setup",$Parser_racc_token2str$30=function(){var $b,$writer,self=this,$ret_or_1=nil,arg=nil;return null==$gvars.stderr&&($gvars.stderr=nil),$truthy($$$(self.$class(),"Racc_debug_parser"))||(self.yydebug=!1),$truthy(null!=($b=self.yydebug)&&$b!==nil?"instance-variable":nil)||(self.yydebug=!1),$truthy(self.yydebug)&&($truthy(null!=($b=self.racc_debug_out)&&$b!==nil?"instance-variable":nil)||(self.racc_debug_out=$gvars.stderr),self.racc_debug_out=$truthy($ret_or_1=self.racc_debug_out)?$ret_or_1:$gvars.stderr),arg=$$$(self.$class(),"Racc_arg"),$truthy($rb_lt(arg.$size(),14))&&($writer=[13,!0],$send(arg,"[]=",Opal.to_a($writer)),$rb_minus($writer.length,1)),arg},$Parser_racc_token2str$30.$$arity=0),Opal.def($Parser_token_to_str$31,"$_racc_init_sysvars",$Parser_racc_token2str$30=function(){return this.racc_state=[0],this.racc_tstack=[],this.racc_vstack=[],this.racc_t=nil,this.racc_val=nil,this.racc_read_next=!0,this.racc_user_yyerror=!1,this.racc_error_status=0},$Parser_racc_token2str$30.$$arity=0),Opal.def($Parser_token_to_str$31,"$do_parse",$Parser_racc_token2str$30=function(){return this.$__send__($$($nesting,"Racc_Main_Parsing_Routine"),this.$_racc_setup(),!1)},$Parser_racc_token2str$30.$$arity=0),Opal.def($Parser_token_to_str$31,"$next_token",$Parser_racc_token2str$30=function(){return this.$raise($$($nesting,"NotImplementedError"),this.$class()+"#next_token is not defined")},$Parser_racc_token2str$30.$$arity=0),Opal.def($Parser_token_to_str$31,"$_racc_do_parse_rb",$Parser_racc_token2str$30=function(arg){var $$7,tok,action_table=nil,action_check=nil,action_default=nil,action_pointer=nil,token_table=nil,act=nil,i=nil,$a=arg,$a=Opal.to_ary($a),action_table=null==$a[0]?nil:$a[0],action_check=null==$a[1]?nil:$a[1],action_default=null==$a[2]?nil:$a[2],action_pointer=null==$a[3]?nil:$a[3];null==$a[4]||$a[4];return null==$a[5]||$a[5],null==$a[6]||$a[6],null==$a[7]||$a[7],null==$a[8]||$a[8],null==$a[9]||$a[9],token_table=null==$a[10]?nil:$a[10],null==$a[11]||$a[11],null==$a[12]||$a[12],null==$a[13]||$a[13],this.$_racc_init_sysvars(),act=i=nil,$send(this,"catch",["racc_end_parse"],(($$7=function(){var $d,self=null==$$7.$$s?this:$$7.$$s,$ret_or_2=nil,$ret_or_3=nil,$ret_or_4=nil;for(null==self.racc_state&&(self.racc_state=nil),null==self.racc_read_next&&(self.racc_read_next=nil),null==self.racc_t&&(self.racc_t=nil),null==self.yydebug&&(self.yydebug=nil),null==self.racc_val&&(self.racc_val=nil);$truthy(!0);)for($truthy(i=action_pointer["$[]"](self.racc_state["$[]"](-1)))?($truthy(self.racc_read_next)&&$truthy(self.racc_t["$!="](0))&&($d=self.$next_token(),$d=Opal.to_ary($d),tok=null==$d[0]?nil:$d[0],self.racc_val=null==$d[1]?nil:$d[1],$truthy(tok)?self.racc_t=$truthy($ret_or_2=token_table["$[]"](tok))?$ret_or_2:1:self.racc_t=0,$truthy(self.yydebug)&&self.$racc_read_token(self.racc_t,tok,self.racc_val),self.racc_read_next=!1),i=$rb_plus(i,self.racc_t),$truthy($truthy($ret_or_3=$truthy($ret_or_4=$rb_ge(i,0))?act=action_table["$[]"](i):$ret_or_4)?action_check["$[]"](i)["$=="](self.racc_state["$[]"](-1)):$ret_or_3)||(act=action_default["$[]"](self.racc_state["$[]"](-1)))):act=action_default["$[]"](self.racc_state["$[]"](-1));$truthy(act=self.$_racc_evalact(act,arg)););}).$$s=this,$$7.$$arity=0,$$7))},$Parser_racc_token2str$30.$$arity=2),Opal.def($Parser_token_to_str$31,"$yyparse",$Parser_racc_token2str$30=function(recv,mid){return this.$__send__($$($nesting,"Racc_YY_Parse_Method"),recv,mid,this.$_racc_setup(),!0)},$Parser_racc_token2str$30.$$arity=2),Opal.def($Parser_token_to_str$31,"$_racc_yyparse_rb",$Parser_racc_token2str$30=function(recv,mid,arg){var $$10,action_table=nil,action_check=nil,action_default=nil,action_pointer=nil,token_table=nil,act=nil,i=nil,$a=arg,$a=Opal.to_ary($a),action_table=null==$a[0]?nil:$a[0],action_check=null==$a[1]?nil:$a[1],action_default=null==$a[2]?nil:$a[2],action_pointer=null==$a[3]?nil:$a[3];null==$a[4]||$a[4];return null==$a[5]||$a[5],null==$a[6]||$a[6],null==$a[7]||$a[7],null==$a[8]||$a[8],null==$a[9]||$a[9],token_table=null==$a[10]?nil:$a[10],null==$a[11]||$a[11],null==$a[12]||$a[12],null==$a[13]||$a[13],this.$_racc_init_sysvars(),i=act=nil,$send(this,"catch",["racc_end_parse"],(($$10=function(){var $$11,self=null==$$10.$$s?this:$$10.$$s;for(null==self.racc_state&&(self.racc_state=nil);!$truthy(i=action_pointer["$[]"](self.racc_state["$[]"](-1)));)for(;$truthy(act=self.$_racc_evalact(action_default["$[]"](self.racc_state["$[]"](-1)),arg)););return $send(recv,"__send__",[mid],(($$11=function(tok,val){var self=null==$$11.$$s?this:$$11.$$s,$ret_or_5=nil,$ret_or_6=nil,$ret_or_7=nil,$ret_or_8=nil,$ret_or_9=nil,$ret_or_10=nil,$ret_or_11=nil,$ret_or_12=nil,$ret_or_13=nil;for(null==self.racc_t&&(self.racc_t=nil),null==self.racc_state&&(self.racc_state=nil),null==self.racc_read_next&&(self.racc_read_next=nil),null==tok&&(tok=nil),null==val&&(val=nil),$truthy(tok)?self.racc_t=$truthy($ret_or_5=token_table["$[]"](tok))?$ret_or_5:1:self.racc_t=0,self.racc_val=val,self.racc_read_next=!1,i=$rb_plus(i,self.racc_t),$truthy($truthy($ret_or_6=$truthy($ret_or_7=$rb_ge(i,0))?act=action_table["$[]"](i):$ret_or_7)?action_check["$[]"](i)["$=="](self.racc_state["$[]"](-1)):$ret_or_6)||(act=action_default["$[]"](self.racc_state["$[]"](-1)));$truthy(act=self.$_racc_evalact(act,arg)););for(;$truthy($truthy($ret_or_8=$truthy($ret_or_9=(i=action_pointer["$[]"](self.racc_state["$[]"](-1)))["$!"]())?$ret_or_9:self.racc_read_next["$!"]())?$ret_or_8:self.racc_t["$=="](0));)for($truthy($truthy($ret_or_10=$truthy($ret_or_11=$truthy($ret_or_12=$truthy($ret_or_13=i)?i=$rb_plus(i,self.racc_t):$ret_or_13)?$rb_ge(i,0):$ret_or_12)?act=action_table["$[]"](i):$ret_or_11)?action_check["$[]"](i)["$=="](self.racc_state["$[]"](-1)):$ret_or_10)||(act=action_default["$[]"](self.racc_state["$[]"](-1)));$truthy(act=self.$_racc_evalact(act,arg)););}).$$s=self,$$11.$$arity=2,$$11))}).$$s=this,$$10.$$arity=0,$$10))},$Parser_racc_token2str$30.$$arity=4),Opal.def($Parser_token_to_str$31,"$_racc_evalact",$Parser_racc_token2str$30=function(act,arg){var $$13,shift_n,code,i,lhs,rhs,self=this,action_table=nil,action_check=nil,action_pointer=nil,reduce_n=nil,$ret_or_14=nil,$ret_or_15=nil,$case=nil,$ret_or_16=nil,$ret_or_17=nil,$a=arg,$a=Opal.to_ary($a),action_table=null==$a[0]?nil:$a[0],action_check=null==$a[1]?nil:$a[1],action_pointer=(null==$a[2]||$a[2],null==$a[3]?nil:$a[3]);if(null==$a[4]||$a[4],null==$a[5]||$a[5],null==$a[6]||$a[6],null==$a[7]||$a[7],null==$a[8]||$a[8],null==$a[9]||$a[9],null==$a[10]||$a[10],shift_n=null==$a[11]?nil:$a[11],reduce_n=null==$a[12]?nil:$a[12],null==$a[13]||$a[13],null==$a[14]||$a[14],$truthy($truthy($ret_or_14=$rb_gt(act,0))?$rb_lt(act,shift_n):$ret_or_14))$truthy($rb_gt(self.racc_error_status,0))&&(self.racc_t["$=="](1)||(self.racc_error_status=$rb_minus(self.racc_error_status,1))),self.racc_vstack.$push(self.racc_val),self.racc_state.$push(act),self.racc_read_next=!0,$truthy(self.yydebug)&&(self.racc_tstack.$push(self.racc_t),self.$racc_shift(self.racc_t,self.racc_tstack,self.racc_vstack));else if($truthy($truthy($ret_or_15=$rb_lt(act,0))?$rb_gt(act,reduce_n["$-@"]()):$ret_or_15)){if(code=$send(self,"catch",["racc_jump"],(($$13=function(){var self=null==$$13.$$s?this:$$13.$$s;return null==self.racc_state&&(self.racc_state=nil),self.racc_state.$push(self.$_racc_do_reduce(arg,act)),!1}).$$s=self,$$13.$$arity=0,$$13)),$truthy(code)){if(1["$==="]($case=code))return self.racc_user_yyerror=!0,reduce_n["$-@"]();if(2["$==="]($case))return shift_n;self.$raise("[Racc Bug] unknown jump code")}}else if(act["$=="](shift_n))$truthy(self.yydebug)&&self.$racc_accept(),self.$throw("racc_end_parse",self.racc_vstack["$[]"](0));else{if(act["$=="](reduce_n["$-@"]())){for($case=self.racc_error_status,0["$==="]($case)?$truthy(arg["$[]"](21))||self.$on_error(self.racc_t,self.racc_val,self.racc_vstack):3["$==="]($case)&&(self.racc_t["$=="](0)&&self.$throw("racc_end_parse",nil),self.racc_read_next=!0),self.racc_user_yyerror=!1,self.racc_error_status=3;$truthy(!0)&&(!$truthy(i=action_pointer["$[]"](self.racc_state["$[]"](-1)))||(i=$rb_plus(i,1),!$truthy($truthy($ret_or_16=$truthy($ret_or_17=$rb_ge(i,0))?act=action_table["$[]"](i):$ret_or_17)?action_check["$[]"](i)["$=="](self.racc_state["$[]"](-1)):$ret_or_16)));)$truthy((lhs=self.racc_state.$size(),rhs=1,"number"==typeof lhs&&"number"==typeof rhs?lhs<=rhs:lhs["$<="](rhs)))&&self.$throw("racc_end_parse",nil),self.racc_state.$pop(),self.racc_vstack.$pop(),$truthy(self.yydebug)&&(self.racc_tstack.$pop(),self.$racc_e_pop(self.racc_state,self.racc_tstack,self.racc_vstack));return act}self.$raise("[Racc Bug] unknown action "+act.$inspect())}return $truthy(self.yydebug)&&self.$racc_next_state(self.racc_state["$[]"](-1),self.racc_state),nil},$Parser_racc_token2str$30.$$arity=2),Opal.def($Parser_token_to_str$31,"$_racc_do_reduce",$Parser_racc_token2str$30=function(rhs,lhs){var nt_base,use_result,reduce_to,method_id,void_array,k1,goto_table=nil,goto_check=nil,goto_default=nil,goto_pointer=nil,reduce_table=nil,state=nil,vstack=nil,tstack=nil,i=nil,len=nil,tmp_t=nil,tmp_v=nil,$writer=nil,$ret_or_18=nil,$ret_or_19=nil,curstate=nil,rhs=rhs,rhs=Opal.to_ary(rhs);null==rhs[0]||rhs[0];return null==rhs[1]||rhs[1],null==rhs[2]||rhs[2],null==rhs[3]||rhs[3],goto_table=null==rhs[4]?nil:rhs[4],goto_check=null==rhs[5]?nil:rhs[5],goto_default=null==rhs[6]?nil:rhs[6],goto_pointer=null==rhs[7]?nil:rhs[7],nt_base=null==rhs[8]?nil:rhs[8],reduce_table=null==rhs[9]?nil:rhs[9],null==rhs[10]||rhs[10],null==rhs[11]||rhs[11],null==rhs[12]||rhs[12],use_result=null==rhs[13]?nil:rhs[13],state=this.racc_state,vstack=this.racc_vstack,tstack=this.racc_tstack,rhs=-3,i="number"==typeof(lhs=lhs)&&"number"==typeof rhs?lhs*rhs:lhs["$*"](rhs),len=reduce_table["$[]"](i),reduce_to=reduce_table["$[]"]($rb_plus(i,1)),method_id=reduce_table["$[]"]($rb_plus(i,2)),void_array=[],$truthy(this.yydebug)&&(tmp_t=tstack["$[]"](len["$-@"](),len)),tmp_v=vstack["$[]"](len["$-@"](),len),$truthy(this.yydebug)&&($writer=[len["$-@"](),len,void_array],$send(tstack,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]),$writer=[len["$-@"](),len,void_array],$send(vstack,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)],$writer=[len["$-@"](),len,void_array],$send(state,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)],$truthy(use_result)?vstack.$push(this.$__send__(method_id,tmp_v,vstack,tmp_v["$[]"](0))):vstack.$push(this.$__send__(method_id,tmp_v,vstack)),tstack.$push(reduce_to),$truthy(this.yydebug)&&this.$racc_reduce(tmp_t,reduce_to,tstack,vstack),k1=$rb_minus(reduce_to,nt_base),$truthy(i=goto_pointer["$[]"](k1))&&(i=$rb_plus(i,state["$[]"](-1)),$truthy($truthy($ret_or_18=$truthy($ret_or_19=$rb_ge(i,0))?curstate=goto_table["$[]"](i):$ret_or_19)?goto_check["$[]"](i)["$=="](k1):$ret_or_18))?curstate:goto_default["$[]"](k1)},$Parser_racc_token2str$30.$$arity=2),Opal.def($Parser_token_to_str$31,"$on_error",$Parser_racc_token2str$30=function(t,val){var self=this,$ret_or_20=nil;return self.$raise($$($nesting,"ParseError"),self.$sprintf("\nparse error on value %s (%s)",val.$inspect(),$truthy($ret_or_20=self.$token_to_str(t))?$ret_or_20:"?"))},$Parser_racc_token2str$30.$$arity=3),Opal.def($Parser_token_to_str$31,"$yyerror",$Parser_racc_token2str$30=function(){return this.$throw("racc_jump",1)},$Parser_racc_token2str$30.$$arity=0),Opal.def($Parser_token_to_str$31,"$yyaccept",$Parser_racc_token2str$30=function(){return this.$throw("racc_jump",2)},$Parser_racc_token2str$30.$$arity=0),Opal.def($Parser_token_to_str$31,"$yyerrok",$Parser_racc_token2str$30=function(){return this.racc_error_status=0},$Parser_racc_token2str$30.$$arity=0),Opal.def($Parser_token_to_str$31,"$racc_read_token",$Parser_racc_token2str$30=function(t,tok,val){return this.racc_debug_out.$print("read    "),this.racc_debug_out.$print(tok.$inspect(),"(",this.$racc_token2str(t),") "),this.racc_debug_out.$puts(val.$inspect()),this.racc_debug_out.$puts()},$Parser_racc_token2str$30.$$arity=3),Opal.def($Parser_token_to_str$31,"$racc_shift",$Parser_racc_token2str$30=function(tok,tstack,vstack){return this.racc_debug_out.$puts("shift   "+this.$racc_token2str(tok)),this.$racc_print_stacks(tstack,vstack),this.racc_debug_out.$puts()},$Parser_racc_token2str$30.$$arity=3),Opal.def($Parser_token_to_str$31,"$racc_reduce",$Parser_racc_token2str$30=function(toks,sim,tstack,vstack){var $$22,out=nil;return(out=this.racc_debug_out).$print("reduce "),$truthy(toks["$empty?"]())?out.$print(" <none>"):$send(toks,"each",[],(($$22=function(t){var self=null==$$22.$$s?this:$$22.$$s;return null==t&&(t=nil),out.$print(" ",self.$racc_token2str(t))}).$$s=this,$$22.$$arity=1,$$22)),out.$puts(" --\x3e "+this.$racc_token2str(sim)),this.$racc_print_stacks(tstack,vstack),this.racc_debug_out.$puts()},$Parser_racc_token2str$30.$$arity=4),Opal.def($Parser_token_to_str$31,"$racc_accept",$Parser_racc_token2str$30=function(){return this.racc_debug_out.$puts("accept"),this.racc_debug_out.$puts()},$Parser_racc_token2str$30.$$arity=0),Opal.def($Parser_token_to_str$31,"$racc_e_pop",$Parser_racc_token2str$30=function(state,tstack,vstack){return this.racc_debug_out.$puts("error recovering mode: pop token"),this.$racc_print_states(state),this.$racc_print_stacks(tstack,vstack),this.racc_debug_out.$puts()},$Parser_racc_token2str$30.$$arity=3),Opal.def($Parser_token_to_str$31,"$racc_next_state",$Parser_racc_token2str$30=function(curstate,state){return this.racc_debug_out.$puts("goto    "+curstate),this.$racc_print_states(state),this.racc_debug_out.$puts()},$Parser_racc_token2str$30.$$arity=2),Opal.def($Parser_token_to_str$31,"$racc_print_stacks",$Parser_racc_token2str$30=function(t,v){var $$27,out=nil;return(out=this.racc_debug_out).$print("        ["),$send(t,"each_index",[],(($$27=function(i){var self=null==$$27.$$s?this:$$27.$$s;return null==i&&(i=nil),out.$print(" (",self.$racc_token2str(t["$[]"](i))," ",v["$[]"](i).$inspect(),")")}).$$s=this,$$27.$$arity=1,$$27)),out.$puts(" ]")},$Parser_racc_token2str$30.$$arity=2),Opal.def($Parser_token_to_str$31,"$racc_print_states",$Parser_racc_token2str$30=function(s){var $$29,out=nil;return(out=this.racc_debug_out).$print("        ["),$send(s,"each",[],(($$29=function(st){null==$$29.$$s||$$29.$$s;return null==st&&(st=nil),out.$print(" ",st)}).$$s=this,$$29.$$arity=1,$$29)),out.$puts(" ]")},$Parser_racc_token2str$30.$$arity=1),Opal.def($Parser_token_to_str$31,"$racc_token2str",$Parser_racc_token2str$30=function(tok){var $ret_or_21;return $truthy($ret_or_21=$$$(this.$class(),"Racc_token_to_s_table")["$[]"](tok))?$ret_or_21:this.$raise("[Racc Bug] can't convert token "+tok+" to string")},$Parser_racc_token2str$30.$$arity=1),Opal.def($Parser_token_to_str$31,"$token_to_str",$Parser_token_to_str$31=function(t){return $$$(this.$class(),"Racc_token_to_s_table")["$[]"](t)},$Parser_token_to_str$31.$$arity=1),nil&&"token_to_str"}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/messages"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$hash2=Opal.hash2,$truthy=Opal.truthy;return Opal.add_stubs(["$freeze","$[]","$===","$empty?","$format"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return Opal.const_set($nesting[0],"MESSAGES",$hash2(["unicode_point_too_large","invalid_escape","incomplete_escape","invalid_hex_escape","invalid_unicode_escape","unterminated_unicode","escape_eof","string_eof","regexp_options","cvar_name","ivar_name","trailing_in_number","empty_numeric","invalid_octal","no_dot_digit_literal","bare_backslash","unexpected","embedded_document","heredoc_id_has_newline","heredoc_id_ends_with_nl","unterminated_heredoc_id","invalid_escape_use","ambiguous_literal","ambiguous_regexp","ambiguous_prefix","triple_dot_at_eol","nth_ref_alias","begin_in_method","backref_assignment","invalid_assignment","module_name_const","unexpected_token","argument_const","argument_ivar","argument_gvar","argument_cvar","duplicate_argument","empty_symbol","odd_hash","singleton_literal","dynamic_const","const_reassignment","module_in_def","class_in_def","unexpected_percent_str","block_and_blockarg","masgn_as_condition","block_given_to_yield","invalid_regexp","invalid_return","csend_in_lhs_of_masgn","cant_assign_to_numparam","reserved_for_numparam","ordinary_param_defined","numparam_used_in_outer_scope","circular_argument_reference","pm_interp_in_var_name","lvar_name","undefined_lvar","duplicate_variable_name","duplicate_pattern_key","endless_setter","invalid_id_to_get","forward_arg_after_restarg","no_anonymous_blockarg","useless_else","duplicate_hash_key","invalid_encoding","invalid_action","clobbered","different_replacements","swallowed_insertions","swallowed_insertions_conflict","crossing_deletions","crossing_deletions_conflict","crossing_insertions","crossing_insertions_conflict"],{unicode_point_too_large:"invalid Unicode codepoint (too large)",invalid_escape:"invalid escape character syntax",incomplete_escape:"incomplete character syntax",invalid_hex_escape:"invalid hex escape",invalid_unicode_escape:"invalid Unicode escape",unterminated_unicode:"unterminated Unicode escape",escape_eof:"escape sequence meets end of file",string_eof:"unterminated string meets end of file",regexp_options:"unknown regexp options: %{options}",cvar_name:"`%{name}' is not allowed as a class variable name",ivar_name:"`%{name}' is not allowed as an instance variable name",trailing_in_number:"trailing `%{character}' in number",empty_numeric:"numeric literal without digits",invalid_octal:"invalid octal digit",no_dot_digit_literal:"no .<digit> floating literal anymore; put 0 before dot",bare_backslash:"bare backslash only allowed before newline",unexpected:"unexpected `%{character}'",embedded_document:"embedded document meets end of file (and they embark on a romantic journey)",heredoc_id_has_newline:"here document identifier across newlines, never match",heredoc_id_ends_with_nl:"here document identifier ends with a newline",unterminated_heredoc_id:"unterminated heredoc id",invalid_escape_use:"invalid character syntax; use ?%{escape}",ambiguous_literal:"ambiguous first argument; put parentheses or a space even after the operator",ambiguous_regexp:"ambiguity between regexp and two divisions: wrap regexp in parentheses or add a space after `/' operator",ambiguous_prefix:"`%{prefix}' interpreted as argument prefix",triple_dot_at_eol:"... at EOL, should be parenthesized",nth_ref_alias:"cannot define an alias for a back-reference variable",begin_in_method:"BEGIN in method",backref_assignment:"cannot assign to a back-reference variable",invalid_assignment:"cannot assign to a keyword",module_name_const:"class or module name must be a constant literal",unexpected_token:"unexpected token %{token}",argument_const:"formal argument cannot be a constant",argument_ivar:"formal argument cannot be an instance variable",argument_gvar:"formal argument cannot be a global variable",argument_cvar:"formal argument cannot be a class variable",duplicate_argument:"duplicate argument name",empty_symbol:"empty symbol literal",odd_hash:"odd number of entries for a hash",singleton_literal:"cannot define a singleton method for a literal",dynamic_const:"dynamic constant assignment",const_reassignment:"constant re-assignment",module_in_def:"module definition in method body",class_in_def:"class definition in method body",unexpected_percent_str:"%{type}: unknown type of percent-literal",block_and_blockarg:"both block argument and literal block are passed",masgn_as_condition:"multiple assignment in conditional context",block_given_to_yield:"block given to yield",invalid_regexp:"%{message}",invalid_return:"Invalid return in class/module body",csend_in_lhs_of_masgn:"&. inside multiple assignment destination",cant_assign_to_numparam:"cannot assign to numbered parameter %{name}",reserved_for_numparam:"%{name} is reserved for numbered parameter",ordinary_param_defined:"ordinary parameter is defined",numparam_used_in_outer_scope:"numbered parameter is already used in an outer scope",circular_argument_reference:"circular argument reference %{var_name}",pm_interp_in_var_name:"symbol literal with interpolation is not allowed",lvar_name:"`%{name}' is not allowed as a local variable name",undefined_lvar:"no such local variable: `%{name}'",duplicate_variable_name:"duplicate variable name %{name}",duplicate_pattern_key:"duplicate hash pattern key %{name}",endless_setter:"setter method cannot be defined in an endless method definition",invalid_id_to_get:"identifier %{identifier} is not valid to get",forward_arg_after_restarg:"... after rest argument",no_anonymous_blockarg:"no anonymous block parameter",useless_else:"else without rescue is useless",duplicate_hash_key:"key is duplicated and overwritten",invalid_encoding:"literal contains escape sequences incompatible with UTF-8",invalid_action:"cannot %{action}",clobbered:"clobbered by: %{action}",different_replacements:"different replacements: %{replacement} vs %{other_replacement}",swallowed_insertions:"this replacement:",swallowed_insertions_conflict:"swallows some inner rewriting actions:",crossing_deletions:"the deletion of:",crossing_deletions_conflict:"is crossing:",crossing_insertions:"the rewriting action on:",crossing_insertions_conflict:"is crossing that on:"}).$freeze()),function($Messages_compile$1,$parent_nesting){var $Messages_compile$1=$module($Messages_compile$1,"Messages"),$nesting=[$Messages_compile$1].concat($parent_nesting);return Opal.defs($Messages_compile$1,"$compile",$Messages_compile$1=function(reason,arguments$){var $ret_or_1=nil,template=$$($nesting,"MESSAGES")["$[]"](reason);return $truthy($truthy($ret_or_1=$$($nesting,"Hash")["$==="](arguments$))?arguments$["$empty?"]():$ret_or_1)?template:this.$format(template,arguments$)},$Messages_compile$1.$$arity=2),nil&&"compile"}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/deprecation"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$module=(Opal.$$,Opal.module),$truthy=Opal.truthy;return Opal.add_stubs(["$attr_writer","$warn"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($Deprecation_warn_of_deprecation$1,$parent_nesting){$Deprecation_warn_of_deprecation$1=$module($Deprecation_warn_of_deprecation$1,"Deprecation"),[$Deprecation_warn_of_deprecation$1].concat($parent_nesting);return $Deprecation_warn_of_deprecation$1.$attr_writer("warned_of_deprecation"),Opal.def($Deprecation_warn_of_deprecation$1,"$warn_of_deprecation",$Deprecation_warn_of_deprecation$1=function(){var self=this,$ret_or_1=nil,$ret_or_2=nil;return null==self.warned_of_deprecation&&(self.warned_of_deprecation=nil),self.warned_of_deprecation=$truthy($ret_or_1=self.warned_of_deprecation)?$ret_or_1:!$truthy($ret_or_2=self.$warn($$$(self,"DEPRECATION_WARNING")))||$ret_or_2},$Deprecation_warn_of_deprecation$1.$$arity=0),nil&&"warn_of_deprecation"}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/ast/processor"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$alias=Opal.alias,$truthy=Opal.truthy,$slice=Opal.slice;return Opal.add_stubs(["$updated","$process_all","$on_var","$!","$nil?","$process","$on_vasgn","$on_argument","$is_a?","$[]","$children","$process_regular_node","$warn"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"AST")].concat($nesting);return function($base,$Processor_on_empty_else$19,$Processor_process_argument_node$18){var $Processor_on_empty_else$19=$klass($base,$Processor_on_empty_else$19,"Processor"),$nesting=[$Processor_on_empty_else$19].concat($Processor_process_argument_node$18);return Opal.def($Processor_on_empty_else$19,"$process_regular_node",$Processor_process_argument_node$18=function(node){return node.$updated(nil,this.$process_all(node))},$Processor_process_argument_node$18.$$arity=1),$alias($Processor_on_empty_else$19,"on_dstr","process_regular_node"),$alias($Processor_on_empty_else$19,"on_dsym","process_regular_node"),$alias($Processor_on_empty_else$19,"on_regexp","process_regular_node"),$alias($Processor_on_empty_else$19,"on_xstr","process_regular_node"),$alias($Processor_on_empty_else$19,"on_splat","process_regular_node"),$alias($Processor_on_empty_else$19,"on_kwsplat","process_regular_node"),$alias($Processor_on_empty_else$19,"on_array","process_regular_node"),$alias($Processor_on_empty_else$19,"on_pair","process_regular_node"),$alias($Processor_on_empty_else$19,"on_hash","process_regular_node"),$alias($Processor_on_empty_else$19,"on_kwargs","process_regular_node"),$alias($Processor_on_empty_else$19,"on_irange","process_regular_node"),$alias($Processor_on_empty_else$19,"on_erange","process_regular_node"),Opal.def($Processor_on_empty_else$19,"$on_var",$Processor_process_argument_node$18=function(node){return node},$Processor_process_argument_node$18.$$arity=1),Opal.def($Processor_on_empty_else$19,"$process_variable_node",$Processor_process_argument_node$18=function(node){return this.$on_var(node)},$Processor_process_argument_node$18.$$arity=1),$alias($Processor_on_empty_else$19,"on_lvar","process_variable_node"),$alias($Processor_on_empty_else$19,"on_ivar","process_variable_node"),$alias($Processor_on_empty_else$19,"on_gvar","process_variable_node"),$alias($Processor_on_empty_else$19,"on_cvar","process_variable_node"),$alias($Processor_on_empty_else$19,"on_back_ref","process_variable_node"),$alias($Processor_on_empty_else$19,"on_nth_ref","process_variable_node"),Opal.def($Processor_on_empty_else$19,"$on_vasgn",$Processor_process_argument_node$18=function(node){var value_node=nil,$a=[].concat(Opal.to_a(node)),name=null==$a[0]?nil:$a[0],value_node=null==$a[1]?nil:$a[1];return $truthy(value_node["$nil?"]()["$!"]())?node.$updated(nil,[name,this.$process(value_node)]):node},$Processor_process_argument_node$18.$$arity=1),Opal.def($Processor_on_empty_else$19,"$process_var_asgn_node",$Processor_process_argument_node$18=function(node){return this.$on_vasgn(node)},$Processor_process_argument_node$18.$$arity=1),$alias($Processor_on_empty_else$19,"on_lvasgn","process_var_asgn_node"),$alias($Processor_on_empty_else$19,"on_ivasgn","process_var_asgn_node"),$alias($Processor_on_empty_else$19,"on_gvasgn","process_var_asgn_node"),$alias($Processor_on_empty_else$19,"on_cvasgn","process_var_asgn_node"),$alias($Processor_on_empty_else$19,"on_and_asgn","process_regular_node"),$alias($Processor_on_empty_else$19,"on_or_asgn","process_regular_node"),Opal.def($Processor_on_empty_else$19,"$on_op_asgn",$Processor_process_argument_node$18=function(node){var $a=[].concat(Opal.to_a(node)),var_node=null==$a[0]?nil:$a[0],method_name=null==$a[1]?nil:$a[1],value_node=null==$a[2]?nil:$a[2];return node.$updated(nil,[this.$process(var_node),method_name,this.$process(value_node)])},$Processor_process_argument_node$18.$$arity=1),$alias($Processor_on_empty_else$19,"on_mlhs","process_regular_node"),$alias($Processor_on_empty_else$19,"on_masgn","process_regular_node"),Opal.def($Processor_on_empty_else$19,"$on_const",$Processor_process_argument_node$18=function(node){var $a=[].concat(Opal.to_a(node)),scope_node=null==$a[0]?nil:$a[0],name=null==$a[1]?nil:$a[1];return node.$updated(nil,[this.$process(scope_node),name])},$Processor_process_argument_node$18.$$arity=1),Opal.def($Processor_on_empty_else$19,"$on_casgn",$Processor_process_argument_node$18=function(node){var value_node=nil,$a=[].concat(Opal.to_a(node)),scope_node=null==$a[0]?nil:$a[0],name=null==$a[1]?nil:$a[1],value_node=null==$a[2]?nil:$a[2];return $truthy(value_node["$nil?"]()["$!"]())?node.$updated(nil,[this.$process(scope_node),name,this.$process(value_node)]):node.$updated(nil,[this.$process(scope_node),name])},$Processor_process_argument_node$18.$$arity=1),$alias($Processor_on_empty_else$19,"on_args","process_regular_node"),Opal.def($Processor_on_empty_else$19,"$on_argument",$Processor_process_argument_node$18=function(node){var value_node=nil,$a=[].concat(Opal.to_a(node)),arg_name=null==$a[0]?nil:$a[0],value_node=null==$a[1]?nil:$a[1];return $truthy(value_node["$nil?"]()["$!"]())?node.$updated(nil,[arg_name,this.$process(value_node)]):node},$Processor_process_argument_node$18.$$arity=1),Opal.def($Processor_on_empty_else$19,"$process_argument_node",$Processor_process_argument_node$18=function(node){return this.$on_argument(node)},$Processor_process_argument_node$18.$$arity=1),$alias($Processor_on_empty_else$19,"on_arg","process_argument_node"),$alias($Processor_on_empty_else$19,"on_optarg","process_argument_node"),$alias($Processor_on_empty_else$19,"on_restarg","process_argument_node"),$alias($Processor_on_empty_else$19,"on_blockarg","process_argument_node"),$alias($Processor_on_empty_else$19,"on_shadowarg","process_argument_node"),$alias($Processor_on_empty_else$19,"on_kwarg","process_argument_node"),$alias($Processor_on_empty_else$19,"on_kwoptarg","process_argument_node"),$alias($Processor_on_empty_else$19,"on_kwrestarg","process_argument_node"),$alias($Processor_on_empty_else$19,"on_forward_arg","process_argument_node"),Opal.def($Processor_on_empty_else$19,"$on_procarg0",$Processor_process_argument_node$18=function(node){return $truthy(node.$children()["$[]"](0)["$is_a?"]($$($nesting,"Symbol")))?this.$on_argument(node):this.$process_regular_node(node)},$Processor_process_argument_node$18.$$arity=1),$alias($Processor_on_empty_else$19,"on_arg_expr","process_regular_node"),$alias($Processor_on_empty_else$19,"on_restarg_expr","process_regular_node"),$alias($Processor_on_empty_else$19,"on_blockarg_expr","process_regular_node"),$alias($Processor_on_empty_else$19,"on_block_pass","process_regular_node"),$alias($Processor_on_empty_else$19,"on_module","process_regular_node"),$alias($Processor_on_empty_else$19,"on_class","process_regular_node"),$alias($Processor_on_empty_else$19,"on_sclass","process_regular_node"),Opal.def($Processor_on_empty_else$19,"$on_def",$Processor_process_argument_node$18=function(node){var $a=[].concat(Opal.to_a(node)),name=null==$a[0]?nil:$a[0],args_node=null==$a[1]?nil:$a[1],body_node=null==$a[2]?nil:$a[2];return node.$updated(nil,[name,this.$process(args_node),this.$process(body_node)])},$Processor_process_argument_node$18.$$arity=1),Opal.def($Processor_on_empty_else$19,"$on_defs",$Processor_process_argument_node$18=function(node){var $a=[].concat(Opal.to_a(node)),definee_node=null==$a[0]?nil:$a[0],name=null==$a[1]?nil:$a[1],args_node=null==$a[2]?nil:$a[2],body_node=null==$a[3]?nil:$a[3];return node.$updated(nil,[this.$process(definee_node),name,this.$process(args_node),this.$process(body_node)])},$Processor_process_argument_node$18.$$arity=1),$alias($Processor_on_empty_else$19,"on_undef","process_regular_node"),$alias($Processor_on_empty_else$19,"on_alias","process_regular_node"),Opal.def($Processor_on_empty_else$19,"$on_send",$Processor_process_argument_node$18=function(node){var receiver_node=nil,method_name=nil,$a=[].concat(Opal.to_a(node)),receiver_node=null==$a[0]?nil:$a[0],method_name=null==$a[1]?nil:$a[1],arg_nodes=$slice.call($a,2);return $truthy(receiver_node)&&(receiver_node=this.$process(receiver_node)),node.$updated(nil,[receiver_node,method_name].concat(Opal.to_a(this.$process_all(arg_nodes))))},$Processor_process_argument_node$18.$$arity=1),$alias($Processor_on_empty_else$19,"on_csend","on_send"),$alias($Processor_on_empty_else$19,"on_index","process_regular_node"),$alias($Processor_on_empty_else$19,"on_indexasgn","process_regular_node"),$alias($Processor_on_empty_else$19,"on_block","process_regular_node"),$alias($Processor_on_empty_else$19,"on_lambda","process_regular_node"),Opal.def($Processor_on_empty_else$19,"$on_numblock",$Processor_process_argument_node$18=function(node){var $a=[].concat(Opal.to_a(node)),method_call=null==$a[0]?nil:$a[0],max_numparam=null==$a[1]?nil:$a[1],body=null==$a[2]?nil:$a[2];return node.$updated(nil,[this.$process(method_call),max_numparam,this.$process(body)])},$Processor_process_argument_node$18.$$arity=1),$alias($Processor_on_empty_else$19,"on_while","process_regular_node"),$alias($Processor_on_empty_else$19,"on_while_post","process_regular_node"),$alias($Processor_on_empty_else$19,"on_until","process_regular_node"),$alias($Processor_on_empty_else$19,"on_until_post","process_regular_node"),$alias($Processor_on_empty_else$19,"on_for","process_regular_node"),$alias($Processor_on_empty_else$19,"on_return","process_regular_node"),$alias($Processor_on_empty_else$19,"on_break","process_regular_node"),$alias($Processor_on_empty_else$19,"on_next","process_regular_node"),$alias($Processor_on_empty_else$19,"on_redo","process_regular_node"),$alias($Processor_on_empty_else$19,"on_retry","process_regular_node"),$alias($Processor_on_empty_else$19,"on_super","process_regular_node"),$alias($Processor_on_empty_else$19,"on_yield","process_regular_node"),$alias($Processor_on_empty_else$19,"on_defined?","process_regular_node"),$alias($Processor_on_empty_else$19,"on_not","process_regular_node"),$alias($Processor_on_empty_else$19,"on_and","process_regular_node"),$alias($Processor_on_empty_else$19,"on_or","process_regular_node"),$alias($Processor_on_empty_else$19,"on_if","process_regular_node"),$alias($Processor_on_empty_else$19,"on_when","process_regular_node"),$alias($Processor_on_empty_else$19,"on_case","process_regular_node"),$alias($Processor_on_empty_else$19,"on_iflipflop","process_regular_node"),$alias($Processor_on_empty_else$19,"on_eflipflop","process_regular_node"),$alias($Processor_on_empty_else$19,"on_match_current_line","process_regular_node"),$alias($Processor_on_empty_else$19,"on_match_with_lvasgn","process_regular_node"),$alias($Processor_on_empty_else$19,"on_resbody","process_regular_node"),$alias($Processor_on_empty_else$19,"on_rescue","process_regular_node"),$alias($Processor_on_empty_else$19,"on_ensure","process_regular_node"),$alias($Processor_on_empty_else$19,"on_begin","process_regular_node"),$alias($Processor_on_empty_else$19,"on_kwbegin","process_regular_node"),$alias($Processor_on_empty_else$19,"on_preexe","process_regular_node"),$alias($Processor_on_empty_else$19,"on_postexe","process_regular_node"),$alias($Processor_on_empty_else$19,"on_case_match","process_regular_node"),$alias($Processor_on_empty_else$19,"on_in_match","process_regular_node"),$alias($Processor_on_empty_else$19,"on_match_pattern","process_regular_node"),$alias($Processor_on_empty_else$19,"on_match_pattern_p","process_regular_node"),$alias($Processor_on_empty_else$19,"on_in_pattern","process_regular_node"),$alias($Processor_on_empty_else$19,"on_if_guard","process_regular_node"),$alias($Processor_on_empty_else$19,"on_unless_guard","process_regular_node"),$alias($Processor_on_empty_else$19,"on_match_var","process_variable_node"),$alias($Processor_on_empty_else$19,"on_match_rest","process_regular_node"),$alias($Processor_on_empty_else$19,"on_pin","process_regular_node"),$alias($Processor_on_empty_else$19,"on_match_alt","process_regular_node"),$alias($Processor_on_empty_else$19,"on_match_as","process_regular_node"),$alias($Processor_on_empty_else$19,"on_array_pattern","process_regular_node"),$alias($Processor_on_empty_else$19,"on_array_pattern_with_tail","process_regular_node"),$alias($Processor_on_empty_else$19,"on_hash_pattern","process_regular_node"),$alias($Processor_on_empty_else$19,"on_const_pattern","process_regular_node"),$alias($Processor_on_empty_else$19,"on_find_pattern","process_regular_node"),Opal.def($Processor_on_empty_else$19,"$process_variable_node",$Processor_process_argument_node$18=function(node){return this.$warn("Parser::AST::Processor#process_variable_node is deprecated as a public API and will be removed. Please use Parser::AST::Processor#on_var instead."),this.$on_var(node)},$Processor_process_argument_node$18.$$arity=1),Opal.def($Processor_on_empty_else$19,"$process_var_asgn_node",$Processor_process_argument_node$18=function(node){return this.$warn("Parser::AST::Processor#process_var_asgn_node is deprecated as a public API and will be removed. Please use Parser::AST::Processor#on_vasgn instead."),this.$on_vasgn(node)},$Processor_process_argument_node$18.$$arity=1),Opal.def($Processor_on_empty_else$19,"$process_argument_node",$Processor_process_argument_node$18=function(node){return this.$warn("Parser::AST::Processor#process_argument_node is deprecated as a public API and will be removed. 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0<$post_args.length&&(first_line=$post_args[0],$post_args.splice(0,1)),null==first_line&&(first_line=1),null==(source=source.$$smap.source)&&(source=nil),this.name=name.$to_s(),this.source=nil,this.first_line=first_line,this.lines=nil,this.line_begins=nil,this.slice_source=nil,this.line_index_for_position=$hash2([],{}),$truthy(source)?($writer=[source],$send(this,"source=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]):nil},$Buffer_bsearch$23.$$arity=-2),Opal.def($Buffer_bsearch$25,"$read",$Buffer_bsearch$23=function(){var $$5;return $send($$($nesting,"File"),"open",[this.name,$enc("rb","ASCII-8BIT")],(($$5=function(io){var $writer,self=null==$$5.$$s?this:$$5.$$s;return null==io&&(io=nil),$writer=[io.$read()],$send(self,"source=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]}).$$s=this,$$5.$$arity=1,$$5)),this},$Buffer_bsearch$23.$$arity=0),Opal.def($Buffer_bsearch$25,"$source",$Buffer_bsearch$23=function(){return $truthy(this.source["$nil?"]())&&this.$raise($$($nesting,"RuntimeError"),$enc("Cannot extract source from uninitialized Source::Buffer","ASCII-8BIT")),this.source},$Buffer_bsearch$23.$$arity=0),Opal.def($Buffer_bsearch$25,"$source=",$Buffer_bsearch$23=function(input){var $writer;return $truthy(input["$frozen?"]())&&(input=input.$dup()),input=this.$class().$reencode_string(input),$truthy(input["$valid_encoding?"]())||this.$raise($$($nesting,"EncodingError"),"invalid byte sequence in "+input.$encoding().$name()),$writer=[input],$send(this,"raw_source=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]},$Buffer_bsearch$23.$$arity=1),Opal.def($Buffer_bsearch$25,"$raw_source=",$Buffer_bsearch$23=function(input){var self=this,$ret_or_4=nil,$ret_or_5=nil;return $truthy(self.source)&&self.$raise($$($nesting,"ArgumentError"),$enc("Source::Buffer is 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line_index=this.$line_index_for_position(position),line_begin=this.$line_begins()["$[]"](line_index);return[$rb_plus(this.first_line,line_index),$rb_minus(position,line_begin)]},$Buffer_bsearch$23.$$arity=1),Opal.def($Buffer_bsearch$25,"$line_for_position",$Buffer_bsearch$23=function(position){return $rb_plus(this.$line_index_for_position(position),this.first_line)},$Buffer_bsearch$23.$$arity=1),Opal.def($Buffer_bsearch$25,"$column_for_position",$Buffer_bsearch$23=function(position){var line_index=this.$line_index_for_position(position);return $rb_minus(position,this.$line_begins()["$[]"](line_index))},$Buffer_bsearch$23.$$arity=1),Opal.def($Buffer_bsearch$25,"$source_lines",$Buffer_bsearch$23=function(){var $$14,$ret_or_6,self=this,lines=nil;return self.lines=$truthy($ret_or_6=self.lines)?$ret_or_6:(lines=self.source.$lines().$to_a(),$truthy(self.source["$end_with?"]($enc("\n","ASCII-8BIT").$freeze()))&&lines["$<<"]($enc("","ASCII-8BIT").$dup()),$send(lines,"each",[],(($$14=function(line){null==$$14.$$s||$$14.$$s;return null==line&&(line=nil),line["$chomp!"]($enc("\n","ASCII-8BIT").$freeze()),line.$freeze()}).$$s=self,$$14.$$arity=1,$$14)),lines.$freeze())},$Buffer_bsearch$23.$$arity=0),Opal.def($Buffer_bsearch$25,"$source_line",$Buffer_bsearch$23=function(lineno){return this.$source_lines().$fetch($rb_minus(lineno,this.first_line)).$dup()},$Buffer_bsearch$23.$$arity=1),Opal.def($Buffer_bsearch$25,"$line_range",$Buffer_bsearch$23=function(lineno){var lhs,self=this,rhs=nil,index=$rb_minus(lineno,self.first_line);return $truthy($truthy(rhs=$rb_lt(index,0))?rhs:(lhs=$rb_plus(index,1),rhs=self.$line_begins().$size(),"number"==typeof lhs&&"number"==typeof rhs?rhs<=lhs:lhs["$>="](rhs)))?self.$raise($$($nesting,"IndexError"),"Parser::Source::Buffer: range for line "+lineno+" requested, valid line numbers are "+self.first_line+".."+$rb_minus($rb_plus(self.first_line,self.$line_begins().$size()),2)):$$($nesting,"Range").$new(self,self.$line_begins()["$[]"](index),$rb_minus(self.$line_begins()["$[]"]($rb_plus(index,1)),1))},$Buffer_bsearch$23.$$arity=1),Opal.def($Buffer_bsearch$25,"$source_range",$Buffer_bsearch$23=function(){var self=this,$ret_or_8=nil;return self.source_range=$truthy($ret_or_8=self.source_range)?$ret_or_8:$$($nesting,"Range").$new(self,0,self.$source().$size())},$Buffer_bsearch$23.$$arity=0),Opal.def($Buffer_bsearch$25,"$last_line",$Buffer_bsearch$23=function(){return $rb_minus($rb_plus(this.$line_begins().$size(),this.first_line),2)},$Buffer_bsearch$23.$$arity=0),Opal.def($Buffer_bsearch$25,"$freeze",$Buffer_freeze$19=function(){var $zuper_ii,$iter=$Buffer_freeze$19.$$p,$zuper=nil,$zuper_i=nil;for($iter&&($Buffer_freeze$19.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return this.$source_lines(),this.$line_begins(),this.$source_range(),$send2(this,$find_super(this,"freeze",$Buffer_freeze$19,!1,!0),"freeze",$zuper,$iter)},$Buffer_freeze$19.$$arity=0),Opal.def($Buffer_bsearch$25,"$inspect",$Buffer_bsearch$23=function(){return"#<"+this.$class()+" "+this.$name()+">"},$Buffer_bsearch$23.$$arity=0),$Buffer_bsearch$25.$private(),Opal.def($Buffer_bsearch$25,"$line_begins",$Buffer_bsearch$23=function(){var $ret_or_9,self=this,begins=nil,index=nil;return self.line_begins=function(){if($truthy($ret_or_9=self.line_begins))return $ret_or_9;for(begins=[0],index=0;$truthy(index=self.source.$index($enc("\n","ASCII-8BIT").$freeze(),index));)index=$rb_plus(index,1),begins["$<<"](index);return begins["$<<"]($rb_plus(self.source.$size(),1)),begins}()},$Buffer_bsearch$23.$$arity=0),Opal.def($Buffer_bsearch$25,"$line_index_for_position",$Buffer_bsearch$23=function(position){var $ret_or_10,index,$writer;return $truthy($ret_or_10=this.line_index_for_position["$[]"](position))?$ret_or_10:(index=$rb_minus(this.$bsearch(this.$line_begins(),position),1),$truthy(this.line_index_for_position["$frozen?"]())||($writer=[position,index],$send(this.line_index_for_position,"[]=",Opal.to_a($writer)),$rb_minus($writer.length,1)),index)},$Buffer_bsearch$23.$$arity=1),$truthy($$($nesting,"Array")["$method_defined?"]("bsearch_index"))?Opal.def($Buffer_bsearch$25,"$bsearch",$Buffer_bsearch$23=function(line_begins,position){var $$24,$ret_or_11;return $truthy($ret_or_11=$send(line_begins,"bsearch_index",[],(($$24=function(line_begin){null==$$24.$$s||$$24.$$s;return 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rhs?rhs<=lhs:lhs["$>="](rhs)}Opal.top;var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$hash2=Opal.hash2,$alias=Opal.alias;return Opal.add_stubs(["$include","$attr_reader","$<","$raise","$nil?","$freeze","$with","$-","$line_for_position","$alias_method","$column_for_position","$!=","$line","$last_line","$inspect","$column","$last_column","$source_line","$slice","$begin_pos","$end_pos","$include?","$source","$to_a","$decompose_position","$join","$name","$+","$new","$min","$max","$disjoint?","$empty?","$>=","$!","$<=>","$contains?","$overlaps?","$==","$*","$is_a?","$source_buffer","$nonzero?","$hash"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($Range_inspect$29,$Range_hash$28){var $Range_inspect$29=$klass($Range_inspect$29,null,"Range"),$nesting=[$Range_inspect$29].concat($Range_hash$28);return 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null==(begin_pos=end_pos.$$smap.begin_pos)&&(begin_pos=this.begin_pos),null==(end_pos=end_pos.$$smap.end_pos)&&(end_pos=this.end_pos),$$($nesting,"Range").$new(this.source_buffer,begin_pos,end_pos)},$Range_hash$28.$$arity=-1),Opal.def($Range_inspect$29,"$adjust",$Range_hash$28=function(end_pos){var begin_pos;if(null==end_pos)end_pos=$hash2([],{});else if(!end_pos.$$is_hash)throw Opal.ArgumentError.$new("expected kwargs");return null==(begin_pos=end_pos.$$smap.begin_pos)&&(begin_pos=0),null==(end_pos=end_pos.$$smap.end_pos)&&(end_pos=0),$$($nesting,"Range").$new(this.source_buffer,$rb_plus(this.begin_pos,begin_pos),$rb_plus(this.end_pos,end_pos))},$Range_hash$28.$$arity=-1),Opal.def($Range_inspect$29,"$resize",$Range_hash$28=function(new_size){return this.$with($hash2(["end_pos"],{end_pos:$rb_plus(this.begin_pos,new_size)}))},$Range_hash$28.$$arity=1),Opal.def($Range_inspect$29,"$join",$Range_hash$28=function(other){return $$($nesting,"Range").$new(this.source_buffer,[this.begin_pos,other.$begin_pos()].$min(),[this.end_pos,other.$end_pos()].$max())},$Range_hash$28.$$arity=1),Opal.def($Range_inspect$29,"$intersect",$Range_hash$28=function(other){return $truthy(this["$disjoint?"](other))?nil:$$($nesting,"Range").$new(this.source_buffer,[this.begin_pos,other.$begin_pos()].$max(),[this.end_pos,other.$end_pos()].$min())},$Range_hash$28.$$arity=1),Opal.def($Range_inspect$29,"$disjoint?",$Range_hash$28=function(other){var $ret_or_2,self=this,$ret_or_1=nil;return $truthy($truthy($ret_or_1=self["$empty?"]())?other["$empty?"]():$ret_or_1)?self.begin_pos["$!="](other.$begin_pos()):$truthy($ret_or_2=$rb_ge(self.begin_pos,other.$end_pos()))?$ret_or_2:$rb_ge(other.$begin_pos(),self.end_pos)},$Range_hash$28.$$arity=1),Opal.def($Range_inspect$29,"$overlaps?",$Range_hash$28=function(other){return this["$disjoint?"](other)["$!"]()},$Range_hash$28.$$arity=1),Opal.def($Range_inspect$29,"$contains?",$Range_hash$28=function(other){return $rb_ge($rb_plus(other.$begin_pos()["$<=>"](this.begin_pos),this.end_pos["$<=>"](other.$end_pos())),$truthy(other["$empty?"]())?2:1)},$Range_hash$28.$$arity=1),Opal.def($Range_inspect$29,"$contained?",$Range_hash$28=function(other){return other["$contains?"](this)},$Range_hash$28.$$arity=1),Opal.def($Range_inspect$29,"$crossing?",$Range_hash$28=function(rhs){var lhs;return!!$truthy(this["$overlaps?"](rhs))&&(lhs=this.begin_pos["$<=>"](rhs.$begin_pos()),rhs=this.end_pos["$<=>"](rhs.$end_pos()),("number"==typeof lhs&&"number"==typeof rhs?lhs*rhs:lhs["$*"](rhs))["$=="](1))},$Range_hash$28.$$arity=1),Opal.def($Range_inspect$29,"$empty?",$Range_hash$28=function(){return this.begin_pos["$=="](this.end_pos)},$Range_hash$28.$$arity=0),Opal.def($Range_inspect$29,"$<=>",$Range_hash$28=function(other){var $ret_or_4,self=this,$ret_or_3=nil;return $truthy($truthy($ret_or_3=other["$is_a?"]($$$($$$($$$("::","Parser"),"Source"),"Range")))?self.source_buffer["$=="](other.$source_buffer()):$ret_or_3)?$truthy($ret_or_4=self.begin_pos["$<=>"](other.$begin_pos())["$nonzero?"]())?$ret_or_4:self.end_pos["$<=>"](other.$end_pos()):nil},$Range_hash$28.$$arity=1),$Range_inspect$29.$alias_method("eql?","=="),Opal.def($Range_inspect$29,"$hash",$Range_hash$28=function(){return[this.source_buffer,this.begin_pos,this.end_pos].$hash()},$Range_hash$28.$$arity=0),Opal.def($Range_inspect$29,"$inspect",$Range_inspect$29=function(){return"#<Parser::Source::Range "+this.source_buffer.$name()+" "+this.begin_pos+"..."+this.end_pos+">"},$Range_inspect$29.$$arity=0),nil&&"inspect"}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/comment"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy;return Opal.add_stubs(["$attr_reader","$alias_method","$new","$associate","$associate_locations","$associate_by_identity","$freeze","$source","$start_with?","$text","$==","$type","$is_a?","$location","$to_s","$expression","$inspect"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($Comment_inspect$9,$Comment_$eq_eq$8){var $Comment_inspect$9=$klass($Comment_inspect$9,null,"Comment"),$nesting=[$Comment_inspect$9].concat($Comment_$eq_eq$8);return $Comment_inspect$9.$$prototype.location=nil,$Comment_inspect$9.$attr_reader("text"),$Comment_inspect$9.$attr_reader("location"),$Comment_inspect$9.$alias_method("loc","location"),Opal.defs($Comment_inspect$9,"$associate",$Comment_$eq_eq$8=function(ast,comments){return $$($nesting,"Associator").$new(ast,comments).$associate()},$Comment_$eq_eq$8.$$arity=2),Opal.defs($Comment_inspect$9,"$associate_locations",$Comment_$eq_eq$8=function(ast,comments){return $$($nesting,"Associator").$new(ast,comments).$associate_locations()},$Comment_$eq_eq$8.$$arity=2),Opal.defs($Comment_inspect$9,"$associate_by_identity",$Comment_$eq_eq$8=function(ast,comments){return $$($nesting,"Associator").$new(ast,comments).$associate_by_identity()},$Comment_$eq_eq$8.$$arity=2),Opal.def($Comment_inspect$9,"$initialize",$Comment_$eq_eq$8=function(range){return this.location=$$$($$$($$($nesting,"Parser"),"Source"),"Map").$new(range),this.text=range.$source().$freeze(),this.$freeze()},$Comment_$eq_eq$8.$$arity=1),Opal.def($Comment_inspect$9,"$type",$Comment_$eq_eq$8=function(){return $truthy(this.$text()["$start_with?"]("#".$freeze()))?"inline":$truthy(this.$text()["$start_with?"]("=begin".$freeze()))?"document":nil},$Comment_$eq_eq$8.$$arity=0),Opal.def($Comment_inspect$9,"$inline?",$Comment_$eq_eq$8=function(){return this.$type()["$=="]("inline")},$Comment_$eq_eq$8.$$arity=0),Opal.def($Comment_inspect$9,"$document?",$Comment_$eq_eq$8=function(){return this.$type()["$=="]("document")},$Comment_$eq_eq$8.$$arity=0),Opal.def($Comment_inspect$9,"$==",$Comment_$eq_eq$8=function(other){var $ret_or_1;return $truthy($ret_or_1=other["$is_a?"]($$$($$($nesting,"Source"),"Comment")))?this.location["$=="](other.$location()):$ret_or_1},$Comment_$eq_eq$8.$$arity=1),Opal.def($Comment_inspect$9,"$inspect",$Comment_inspect$9=function(){return"#<Parser::Source::Comment "+this.location.$expression().$to_s()+" "+this.$text().$inspect()+">"},$Comment_inspect$9.$$arity=0),nil&&"inspect"}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/comment/associator"]=function(Opal){function $rb_le(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs<=rhs:lhs["$<="](rhs)}Opal.top;var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send;return Opal.add_stubs(["$attr_accessor","$do_associate","$private","$freeze","$[]","$include?","$type","$sort_by","$compact","$children","$begin_pos","$expression","$loc","$select","$is_a?","$new","$[]=","$-","$==","$compare_by_identity","$advance_comment","$advance_through_directives","$visit","$process_leading_comments","$location","$<=","$line","$last_line","$each","$children_in_source_order","$process_trailing_comments","$current_comment_before?","$associate_and_advance_comment","$current_comment_before_end?","$current_comment_decorates?","$+","$!","$end_pos","$<<","$start_with?","$text","$=~"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($Associator_advance_through_directives$19,$Associator_associate_and_advance_comment$18){var $Associator_advance_through_directives$19=$klass($Associator_advance_through_directives$19,null,"Associator"),$nesting=[$Associator_advance_through_directives$19].concat($Associator_associate_and_advance_comment$18);return $Associator_advance_through_directives$19.$$prototype.map_using=$Associator_advance_through_directives$19.$$prototype.mapping=$Associator_advance_through_directives$19.$$prototype.skip_directives=$Associator_advance_through_directives$19.$$prototype.ast=$Associator_advance_through_directives$19.$$prototype.current_comment=$Associator_advance_through_directives$19.$$prototype.comment_num=$Associator_advance_through_directives$19.$$prototype.comments=nil,$Associator_advance_through_directives$19.$attr_accessor("skip_directives"),Opal.def($Associator_advance_through_directives$19,"$initialize",$Associator_associate_and_advance_comment$18=function(ast,comments){return this.ast=ast,this.comments=comments,this.skip_directives=!0},$Associator_associate_and_advance_comment$18.$$arity=2),Opal.def($Associator_advance_through_directives$19,"$associate",$Associator_associate_and_advance_comment$18=function(){return this.map_using="eql",this.$do_associate()},$Associator_associate_and_advance_comment$18.$$arity=0),Opal.def($Associator_advance_through_directives$19,"$associate_locations",$Associator_associate_and_advance_comment$18=function(){return this.map_using="location",this.$do_associate()},$Associator_associate_and_advance_comment$18.$$arity=0),Opal.def($Associator_advance_through_directives$19,"$associate_by_identity",$Associator_associate_and_advance_comment$18=function(){return this.map_using="identity",this.$do_associate()},$Associator_associate_and_advance_comment$18.$$arity=0),$Associator_advance_through_directives$19.$private(),Opal.const_set($nesting[0],"POSTFIX_TYPES",$$($nesting,"Set")["$[]"]("if","while","while_post","until","until_post","masgn").$freeze()),Opal.def($Associator_advance_through_directives$19,"$children_in_source_order",$Associator_associate_and_advance_comment$18=function(node){var $$6,$$7;return $truthy($$($nesting,"POSTFIX_TYPES")["$include?"](node.$type()))?$send(node.$children().$compact(),"sort_by",[],(($$6=function(child){null==$$6.$$s||$$6.$$s;return null==child&&(child=nil),child.$loc().$expression().$begin_pos()}).$$s=this,$$6.$$arity=1,$$6)):$send(node.$children(),"select",[],(($$7=function(child){null==$$7.$$s||$$7.$$s;var $ret_or_1,$ret_or_2=nil;return null==child&&(child=nil),$truthy($ret_or_1=$truthy($ret_or_2=child["$is_a?"]($$$($$($nesting,"AST"),"Node")))?child.$loc():$ret_or_2)?child.$loc().$expression():$ret_or_1}).$$s=this,$$7.$$arity=1,$$7))},$Associator_associate_and_advance_comment$18.$$arity=1),Opal.def($Associator_advance_through_directives$19,"$do_associate",$Associator_associate_and_advance_comment$18=function(){var $$9;return this.mapping=$send($$($nesting,"Hash"),"new",[],(($$9=function(rhs,k){null==$$9.$$s||$$9.$$s;var lhs=nil;return null==rhs&&(rhs=nil),null==k&&(k=nil),lhs=[k,[]],$send(rhs,"[]=",Opal.to_a(lhs)),lhs[rhs=1,"number"==typeof(lhs=lhs.length)&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)]}).$$s=this,$$9.$$arity=2,$$9)),this.map_using["$=="]("identity")&&this.mapping.$compare_by_identity(),this.comment_num=-1,this.$advance_comment(),$truthy(this.skip_directives)&&this.$advance_through_directives(),$truthy(this.ast)&&this.$visit(this.ast),this.mapping},$Associator_associate_and_advance_comment$18.$$arity=0),Opal.def($Associator_advance_through_directives$19,"$visit",$Associator_associate_and_advance_comment$18=function(node){var $$11,self=this,node_loc=nil,$ret_or_3=nil;return self.$process_leading_comments(node),$truthy(self.current_comment)?(node_loc=node.$location(),$truthy($truthy($ret_or_3=$rb_le(self.current_comment.$location().$line(),node_loc.$last_line()))?$ret_or_3:node_loc["$is_a?"]($$$($$($nesting,"Map"),"Heredoc")))?($send(self.$children_in_source_order(node),"each",[],(($$11=function(child){var self=null==$$11.$$s?this:$$11.$$s;return null==child&&(child=nil),self.$visit(child)}).$$s=self,$$11.$$arity=1,$$11)),self.$process_trailing_comments(node)):nil):nil},$Associator_associate_and_advance_comment$18.$$arity=1),Opal.def($Associator_advance_through_directives$19,"$process_leading_comments",$Associator_associate_and_advance_comment$18=function(node){if(node.$type()["$=="]("begin"))return nil;for(;$truthy(this["$current_comment_before?"](node));)this.$associate_and_advance_comment(node)},$Associator_associate_and_advance_comment$18.$$arity=1),Opal.def($Associator_advance_through_directives$19,"$process_trailing_comments",$Associator_associate_and_advance_comment$18=function(node){for(;$truthy(this["$current_comment_before_end?"](node));)this.$associate_and_advance_comment(node);for(;$truthy(this["$current_comment_decorates?"](node));)this.$associate_and_advance_comment(node)},$Associator_associate_and_advance_comment$18.$$arity=1),Opal.def($Associator_advance_through_directives$19,"$advance_comment",$Associator_associate_and_advance_comment$18=function(){var lhs,rhs;return this.comment_num=(lhs=this.comment_num,rhs=1,"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)),this.current_comment=this.comments["$[]"](this.comment_num)},$Associator_associate_and_advance_comment$18.$$arity=0),Opal.def($Associator_advance_through_directives$19,"$current_comment_before?",$Associator_associate_and_advance_comment$18=function(node){var comment_loc=nil,node_loc=nil;return!$truthy(this.current_comment["$!"]())&&(comment_loc=this.current_comment.$location().$expression(),node_loc=node.$location().$expression(),$rb_le(comment_loc.$end_pos(),node_loc.$begin_pos()))},$Associator_associate_and_advance_comment$18.$$arity=1),Opal.def($Associator_advance_through_directives$19,"$current_comment_before_end?",$Associator_associate_and_advance_comment$18=function(node){var comment_loc=nil,node_loc=nil;return!$truthy(this.current_comment["$!"]())&&(comment_loc=this.current_comment.$location().$expression(),node_loc=node.$location().$expression(),$rb_le(comment_loc.$end_pos(),node_loc.$end_pos()))},$Associator_associate_and_advance_comment$18.$$arity=1),Opal.def($Associator_advance_through_directives$19,"$current_comment_decorates?",$Associator_associate_and_advance_comment$18=function(node){return!$truthy(this.current_comment["$!"]())&&this.current_comment.$location().$line()["$=="](node.$location().$last_line())},$Associator_associate_and_advance_comment$18.$$arity=1),Opal.def($Associator_advance_through_directives$19,"$associate_and_advance_comment",$Associator_associate_and_advance_comment$18=function(node){var self=this,key=self.map_using["$=="]("location")?node.$location():node;return self.mapping["$[]"](key)["$<<"](self.current_comment),self.$advance_comment()},$Associator_associate_and_advance_comment$18.$$arity=1),Opal.const_set($nesting[0],"MAGIC_COMMENT_RE",/^#\s*(-\*-|)\s*(frozen_string_literal|warn_indent|warn_past_scope):.*\1$/),Opal.def($Associator_advance_through_directives$19,"$advance_through_directives",$Associator_advance_through_directives$19=function(){var self=this,$ret_or_4=nil,$ret_or_5=nil,$ret_or_6=nil;return $truthy($truthy($ret_or_4=self.current_comment)?self.current_comment.$text()["$start_with?"]("#!".$freeze()):$ret_or_4)&&self.$advance_comment(),$truthy($truthy($ret_or_5=self.current_comment)?self.current_comment.$text()["$=~"]($$($nesting,"MAGIC_COMMENT_RE")):$ret_or_5)&&self.$advance_comment(),$truthy($truthy($ret_or_6=self.current_comment)?self.current_comment.$text()["$=~"]($$$($$($nesting,"Buffer"),"ENCODING_RE")):$ret_or_6)?self.$advance_comment():nil},$Associator_advance_through_directives$19.$$arity=0),nil&&"advance_through_directives"}($$($nesting,"Comment"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/rewriter"]=function(Opal){function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}function $rb_le(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs<=rhs:lhs["$<="](rhs)}Opal.top;var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$send=Opal.send,$gvars=Opal.gvars,$truthy=Opal.truthy,$hash2=Opal.hash2;return Opal.add_stubs(["$attr_reader","$warn_of_deprecation","$class","$new","$lambda","$puts","$render","$consumer=","$-","$append","$freeze","$begin","$end","$+","$in_transaction?","$raise","$dup","$source","$each","$sort","$begin_pos","$range","$length","$replacement","$[]=","$private","$empty?","$!","$allow_multiple_insertions?","$clobbered_insertion?","$raise_clobber_error","$record_insertion","$adjacent_updates?","$find","$overlaps?","$replace_compatible_with_insertion?","$merge_actions!","$<<","$active_queue","$adjacent_insertions?","$merge_actions","$delete","$can_merge?","$record_replace","$|","$active_insertions","$active_insertions=","$active_clobber","$clobbered_position_mask","$active_clobber=","$size","$!=","$&","$<=","$end_pos","$adjacent_insertion_mask","$select","$adjacent?","$adjacent_position_mask","$>=","$==","$[]","$all?","$intersect","$nil?","$max","$sort_by","$push","$join","$first","$max_by","$merge_replacements","$replace_actions","$disjoint?","$<","$process","$extend"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function(self,$Rewriter_adjacent$ques$45){var $Rewriter_transaction$12,self=$klass(self,null,"Rewriter"),$nesting=[self].concat($Rewriter_adjacent$ques$45);return self.$$prototype.diagnostics=self.$$prototype.insert_before_multi_order=self.$$prototype.insert_after_multi_order=self.$$prototype.source_buffer=self.$$prototype.queue=self.$$prototype.clobber=self.$$prototype.insertions=self.$$prototype.pending_queue=self.$$prototype.pending_clobber=self.$$prototype.pending_insertions=nil,self.$attr_reader("source_buffer"),self.$attr_reader("diagnostics"),Opal.def(self,"$initialize",$Rewriter_adjacent$ques$45=function(source_buffer){var $$2,$writer;return this.$class().$warn_of_deprecation(),this.diagnostics=$$$($$($nesting,"Diagnostic"),"Engine").$new(),$writer=[$send(this,"lambda",[],(($$2=function(diag){null==$$2.$$s||$$2.$$s;return null==$gvars.stderr&&($gvars.stderr=nil),null==diag&&(diag=nil),$gvars.stderr.$puts(diag.$render())}).$$s=this,$$2.$$arity=1,$$2))],$send(this.diagnostics,"consumer=",Opal.to_a($writer)),$rb_minus($writer.length,1),this.source_buffer=source_buffer,this.queue=[],this.clobber=0,this.insertions=0,this.insert_before_multi_order=0,this.insert_after_multi_order=0,this.pending_queue=nil,this.pending_clobber=nil,this.pending_insertions=nil},$Rewriter_adjacent$ques$45.$$arity=1),Opal.def(self,"$remove",$Rewriter_adjacent$ques$45=function(range){return this.$append($$$($$($nesting,"Rewriter"),"Action").$new(range,"".$freeze()))},$Rewriter_adjacent$ques$45.$$arity=1),Opal.def(self,"$insert_before",$Rewriter_adjacent$ques$45=function(range,content){return this.$append($$$($$($nesting,"Rewriter"),"Action").$new(range.$begin(),content))},$Rewriter_adjacent$ques$45.$$arity=2),Opal.def(self,"$wrap",$Rewriter_adjacent$ques$45=function(range,before,after){return this.$append($$$($$($nesting,"Rewriter"),"Action").$new(range.$begin(),before)),this.$append($$$($$($nesting,"Rewriter"),"Action").$new(range.$end(),after))},$Rewriter_adjacent$ques$45.$$arity=3),Opal.def(self,"$insert_before_multi",$Rewriter_adjacent$ques$45=function(range,content){return this.insert_before_multi_order=$rb_minus(this.insert_before_multi_order,1),this.$append($$$($$($nesting,"Rewriter"),"Action").$new(range.$begin(),content,!0,this.insert_before_multi_order))},$Rewriter_adjacent$ques$45.$$arity=2),Opal.def(self,"$insert_after",$Rewriter_adjacent$ques$45=function(range,content){return this.$append($$$($$($nesting,"Rewriter"),"Action").$new(range.$end(),content))},$Rewriter_adjacent$ques$45.$$arity=2),Opal.def(self,"$insert_after_multi",$Rewriter_adjacent$ques$45=function(range,content){return this.insert_after_multi_order=$rb_plus(this.insert_after_multi_order,1),this.$append($$$($$($nesting,"Rewriter"),"Action").$new(range.$end(),content,!0,this.insert_after_multi_order))},$Rewriter_adjacent$ques$45.$$arity=2),Opal.def(self,"$replace",$Rewriter_adjacent$ques$45=function(range,content){return this.$append($$$($$($nesting,"Rewriter"),"Action").$new(range,content))},$Rewriter_adjacent$ques$45.$$arity=2),Opal.def(self,"$process",$Rewriter_adjacent$ques$45=function(){var $$11,source,adjustment=nil;return $truthy(this["$in_transaction?"]())&&this.$raise("Do not call "+this.$class()+"#process inside a transaction"),adjustment=0,source=this.source_buffer.$source().$dup(),$send(this.queue.$sort(),"each",[],(($$11=function(action){var begin_pos,end_pos,$writer;null==$$11.$$s||$$11.$$s;return null==action&&(action=nil),begin_pos=$rb_plus(action.$range().$begin_pos(),adjustment),end_pos=$rb_plus(begin_pos,action.$range().$length()),$writer=[Opal.Range.$new(begin_pos,end_pos,!0),action.$replacement()],$send(source,"[]=",Opal.to_a($writer)),$rb_minus($writer.length,1),adjustment=$rb_plus(adjustment,$rb_minus(action.$replacement().$length(),action.$range().$length()))}).$$s=this,$$11.$$arity=1,$$11)),source},$Rewriter_adjacent$ques$45.$$arity=0),Opal.def(self,"$transaction",$Rewriter_transaction$12=function(){var $iter=$Rewriter_transaction$12.$$p,$yield=$iter||nil,self=this;return $iter&&($Rewriter_transaction$12.$$p=null),function(){try{return $yield!==nil||self.$raise(self.$class()+"#transaction requires block"),$truthy(self["$in_transaction?"]())&&self.$raise("Nested transaction is not supported"),self.pending_queue=self.queue.$dup(),self.pending_clobber=self.clobber,self.pending_insertions=self.insertions,Opal.yieldX($yield,[]),self.queue=self.pending_queue,self.clobber=self.pending_clobber,self.insertions=self.pending_insertions,self}finally{self.pending_queue=nil,self.pending_clobber=nil,self.pending_insertions=nil}}()},$Rewriter_transaction$12.$$arity=0),self.$private(),Opal.def(self,"$append",$Rewriter_adjacent$ques$45=function(action){var $$14,$$15,insertions,self=this,range=nil,$ret_or_1=nil,conflicting=nil,adjacent=nil,range=action.$range();if($truthy(range["$empty?"]())){if($truthy(action.$replacement()["$empty?"]()))return self;$truthy($truthy($ret_or_1=action["$allow_multiple_insertions?"]()["$!"]())?conflicting=self["$clobbered_insertion?"](range):$ret_or_1)&&self.$raise_clobber_error(action,[conflicting]),self.$record_insertion(range),$truthy(adjacent=self["$adjacent_updates?"](range))?(conflicting=$send(adjacent,"find",[],(($$14=function(a){var $ret_or_2,self=null==$$14.$$s?this:$$14.$$s;return null==a&&(a=nil),$truthy($ret_or_2=a.$range()["$overlaps?"](range))?self["$replace_compatible_with_insertion?"](a,action)["$!"]():$ret_or_2}).$$s=self,$$14.$$arity=1,$$14)),$truthy(conflicting)&&self.$raise_clobber_error(action,[conflicting]),self["$merge_actions!"](action,adjacent)):self.$active_queue()["$<<"](action)}else $truthy(insertions=self["$adjacent_insertions?"](range))&&$send(insertions,"each",[],(($$15=function(insertion){var self=null==$$15.$$s?this:$$15.$$s,$ret_or_3=nil;return null==insertion&&(insertion=nil),$truthy($truthy($ret_or_3=range["$overlaps?"](insertion.$range()))?self["$replace_compatible_with_insertion?"](action,insertion)["$!"]():$ret_or_3)?self.$raise_clobber_error(action,[insertion]):(action=self.$merge_actions(action,[insertion]),self.$active_queue().$delete(insertion))}).$$s=self,$$15.$$arity=1,$$15)),$truthy(adjacent=self["$adjacent_updates?"](range))?$truthy(self["$can_merge?"](action,adjacent))?(self.$record_replace(range),self["$merge_actions!"](action,adjacent)):self.$raise_clobber_error(action,adjacent):(self.$record_replace(range),self.$active_queue()["$<<"](action));return self},$Rewriter_adjacent$ques$45.$$arity=1),Opal.def(self,"$record_insertion",$Rewriter_adjacent$ques$45=function(range){var $writer=[this.$active_insertions()["$|"](1["$<<"](range.$begin_pos()))];return $send(this,"active_insertions=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]},$Rewriter_adjacent$ques$45.$$arity=1),Opal.def(self,"$record_replace",$Rewriter_adjacent$ques$45=function(range){var $writer=[this.$active_clobber()["$|"](this.$clobbered_position_mask(range))];return $send(this,"active_clobber=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]},$Rewriter_adjacent$ques$45.$$arity=1),Opal.def(self,"$clobbered_position_mask",$Rewriter_adjacent$ques$45=function(range){return $rb_minus(1["$<<"](range.$size()),1)["$<<"](range.$begin_pos())},$Rewriter_adjacent$ques$45.$$arity=1),Opal.def(self,"$adjacent_position_mask",$Rewriter_adjacent$ques$45=function(range){return $rb_minus(1["$<<"]($rb_plus(range.$size(),2)),1)["$<<"]($rb_minus(range.$begin_pos(),1))},$Rewriter_adjacent$ques$45.$$arity=1),Opal.def(self,"$adjacent_insertion_mask",$Rewriter_adjacent$ques$45=function(range){return $rb_minus(1["$<<"]($rb_plus(range.$size(),1)),1)["$<<"](range.$begin_pos())},$Rewriter_adjacent$ques$45.$$arity=1),Opal.def(self,"$clobbered_insertion?",$Rewriter_adjacent$ques$45=function(insertion){var $$22,insertion_pos=insertion.$begin_pos();return $truthy(this.$active_insertions()["$&"](1["$<<"](insertion_pos))["$!="](0))?$send(this.$active_queue(),"find",[],(($$22=function(a){var $ret_or_4;null==$$22.$$s||$$22.$$s;return null==a&&(a=nil),$truthy($ret_or_4=$rb_le(a.$range().$begin_pos(),insertion_pos))?$rb_le(insertion_pos,a.$range().$end_pos()):$ret_or_4}).$$s=this,$$22.$$arity=1,$$22)):nil},$Rewriter_adjacent$ques$45.$$arity=1),Opal.def(self,"$adjacent_insertions?",$Rewriter_adjacent$ques$45=function(range){var $$24,result=nil;return $truthy(this.$active_insertions()["$&"](this.$adjacent_insertion_mask(range))["$!="](0))?(result=$send(this.$active_queue(),"select",[],(($$24=function(a){var $ret_or_5,self=null==$$24.$$s?this:$$24.$$s;return null==a&&(a=nil),$truthy($ret_or_5=a.$range()["$empty?"]())?self["$adjacent?"](range,a.$range()):$ret_or_5}).$$s=this,$$24.$$arity=1,$$24)),$truthy(result["$empty?"]())?nil:result):nil},$Rewriter_adjacent$ques$45.$$arity=1),Opal.def(self,"$adjacent_updates?",$Rewriter_adjacent$ques$45=function(range){var $$26;return $truthy(this.$active_clobber()["$&"](this.$adjacent_position_mask(range))["$!="](0))?$send(this.$active_queue(),"select",[],(($$26=function(a){var self=null==$$26.$$s?this:$$26.$$s;return null==a&&(a=nil),self["$adjacent?"](range,a.$range())}).$$s=this,$$26.$$arity=1,$$26)):nil},$Rewriter_adjacent$ques$45.$$arity=1),Opal.def(self,"$replace_compatible_with_insertion?",$Rewriter_adjacent$ques$45=function(replace,insertion){var $ret_or_6,lhs,rhs,$ret_or_7=nil,offset=nil;return $truthy($ret_or_6=$truthy((lhs=$rb_minus(replace.$replacement().$length(),replace.$range().$size()),rhs=insertion.$range().$size(),$ret_or_7="number"==typeof lhs&&"number"==typeof rhs?rhs<=lhs:lhs["$>="](rhs)))?offset=$rb_minus(insertion.$range().$begin_pos(),replace.$range().$begin_pos()):$ret_or_7)?replace.$replacement()["$[]"](offset,insertion.$replacement().$length())["$=="](insertion.$replacement()):$ret_or_6},$Rewriter_adjacent$ques$45.$$arity=2),Opal.def(self,"$can_merge?",$Rewriter_adjacent$ques$45=function(action,existing){var $$29,range=nil,range=action.$range();return $send(existing,"all?",[],(($$29=function(other){null==$$29.$$s||$$29.$$s;var repl1_offset,repl2_offset,repl1_length,repl2_length,replacement2,overlap=nil,replacement1=nil,$ret_or_8=nil,$ret_or_9=nil;return null==other&&(other=nil),overlap=range.$intersect(other.$range()),!!$truthy(overlap["$nil?"]())||(repl1_offset=$rb_minus(overlap.$begin_pos(),range.$begin_pos()),repl2_offset=$rb_minus(overlap.$begin_pos(),other.$range().$begin_pos()),repl1_length=[$rb_minus(other.$range().$length(),repl2_offset),$rb_minus(other.$replacement().$length(),repl2_offset)].$max(),repl2_length=[$rb_minus(range.$length(),repl1_offset),$rb_minus(action.$replacement().$length(),repl1_offset)].$max(),replacement1=$truthy($ret_or_8=action.$replacement()["$[]"](repl1_offset,repl1_length))?$ret_or_8:"".$freeze(),replacement2=$truthy($ret_or_9=other.$replacement()["$[]"](repl2_offset,repl2_length))?$ret_or_9:"".$freeze(),replacement1["$=="](replacement2))}).$$s=this,$$29.$$arity=1,$$29))},$Rewriter_adjacent$ques$45.$$arity=2),Opal.def(self,"$merge_actions",$Rewriter_adjacent$ques$45=function(action,existing){var $$31,$$32,actions=nil,range=(actions=$send(existing.$push(action),"sort_by",[],(($$31=function(a){null==$$31.$$s||$$31.$$s;return null==a&&(a=nil),[a.$range().$begin_pos(),a.$range().$end_pos()]}).$$s=this,$$31.$$arity=1,$$31))).$first().$range().$join($send(actions,"max_by",[],(($$32=function(a){null==$$32.$$s||$$32.$$s;return null==a&&(a=nil),a.$range().$end_pos()}).$$s=this,$$32.$$arity=1,$$32)).$range());return $$$($$($nesting,"Rewriter"),"Action").$new(range,this.$merge_replacements(actions))},$Rewriter_adjacent$ques$45.$$arity=2),Opal.def(self,"$merge_actions!",$Rewriter_adjacent$ques$45=function(action,existing){var new_action=this.$merge_actions(action,existing);return this.$active_queue().$delete(action),this.$replace_actions(existing,new_action)},$Rewriter_adjacent$ques$45.$$arity=2),Opal.def(self,"$merge_replacements",$Rewriter_adjacent$ques$45=function(actions){var $$35,result=nil,prev_act=nil,result="".$dup(),prev_act=nil;return $send(actions,"each",[],(($$35=function(act){null==$$35.$$s||$$35.$$s;var offset,lhs,rhs=nil;return null==act&&(act=nil),$truthy($truthy(rhs=prev_act["$!"]())?rhs:act.$range()["$disjoint?"](prev_act.$range()))?result["$<<"](act.$replacement()):(offset=$rb_minus([$rb_plus(prev_act.$range().$begin_pos(),prev_act.$replacement().$length()),prev_act.$range().$end_pos()].$max(),act.$range().$begin_pos()),$truthy((lhs=offset,rhs=act.$replacement().$size(),"number"==typeof lhs&&"number"==typeof rhs?lhs<rhs:lhs["$<"](rhs)))&&result["$<<"](act.$replacement()["$[]"](Opal.Range.$new(offset,-1,!1)))),prev_act=act}).$$s=this,$$35.$$arity=1,$$35)),result},$Rewriter_adjacent$ques$45.$$arity=1),Opal.def(self,"$replace_actions",$Rewriter_adjacent$ques$45=function(old,updated){var $$37;return $send(old,"each",[],(($$37=function(act){var self=null==$$37.$$s?this:$$37.$$s;return null==act&&(act=nil),self.$active_queue().$delete(act)}).$$s=this,$$37.$$arity=1,$$37)),this.$active_queue()["$<<"](updated)},$Rewriter_adjacent$ques$45.$$arity=2),Opal.def(self,"$raise_clobber_error",$Rewriter_adjacent$ques$45=function(action,existing){var diagnostic=$$($nesting,"Diagnostic").$new("error","invalid_action",$hash2(["action"],{action:action}),action.$range());return this.diagnostics.$process(diagnostic),diagnostic=$$($nesting,"Diagnostic").$new("note","clobbered",$hash2(["action"],{action:existing["$[]"](0)}),existing["$[]"](0).$range()),this.diagnostics.$process(diagnostic),this.$raise($$($nesting,"ClobberingError"),"Parser::Source::Rewriter detected clobbering")},$Rewriter_adjacent$ques$45.$$arity=2),Opal.def(self,"$in_transaction?",$Rewriter_adjacent$ques$45=function(){return this.pending_queue["$nil?"]()["$!"]()},$Rewriter_adjacent$ques$45.$$arity=0),Opal.def(self,"$active_queue",$Rewriter_adjacent$ques$45=function(){var $ret_or_11;return $truthy($ret_or_11=this.pending_queue)?$ret_or_11:this.queue},$Rewriter_adjacent$ques$45.$$arity=0),Opal.def(self,"$active_clobber",$Rewriter_adjacent$ques$45=function(){var $ret_or_12;return $truthy($ret_or_12=this.pending_clobber)?$ret_or_12:this.clobber},$Rewriter_adjacent$ques$45.$$arity=0),Opal.def(self,"$active_insertions",$Rewriter_adjacent$ques$45=function(){var $ret_or_13;return $truthy($ret_or_13=this.pending_insertions)?$ret_or_13:this.insertions},$Rewriter_adjacent$ques$45.$$arity=0),Opal.def(self,"$active_clobber=",$Rewriter_adjacent$ques$45=function(value){return $truthy(this.pending_clobber)?this.pending_clobber=value:this.clobber=value},$Rewriter_adjacent$ques$45.$$arity=1),Opal.def(self,"$active_insertions=",$Rewriter_adjacent$ques$45=function(value){return $truthy(this.pending_insertions)?this.pending_insertions=value:this.insertions=value},$Rewriter_adjacent$ques$45.$$arity=1),Opal.def(self,"$adjacent?",$Rewriter_adjacent$ques$45=function(range1,range2){var $ret_or_14;return $truthy($ret_or_14=$rb_le(range1.$begin_pos(),range2.$end_pos()))?$rb_le(range2.$begin_pos(),range1.$end_pos()):$ret_or_14},$Rewriter_adjacent$ques$45.$$arity=2),Opal.const_set($nesting[0],"DEPRECATION_WARNING",["Parser::Source::Rewriter is deprecated.","Please update your code to use Parser::Source::TreeRewriter instead"].$join("\n").$freeze()),self.$extend($$($nesting,"Deprecation"))}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/rewriter/action"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy;return Opal.add_stubs(["$include","$attr_reader","$alias_method","$freeze","$<=>","$begin_pos","$range","$zero?","$order","$==","$length","$empty?","$inspect"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($Action_to_s$3,$Action_$lt_eq_gt$2){$Action_to_s$3=$klass($Action_to_s$3,null,"Action"),$Action_$lt_eq_gt$2=[$Action_to_s$3].concat($Action_$lt_eq_gt$2);return $Action_to_s$3.$$prototype.range=$Action_to_s$3.$$prototype.replacement=nil,$Action_to_s$3.$include($$($Action_$lt_eq_gt$2,"Comparable")),$Action_to_s$3.$attr_reader("range","replacement","allow_multiple_insertions","order"),$Action_to_s$3.$alias_method("allow_multiple_insertions?","allow_multiple_insertions"),Opal.def($Action_to_s$3,"$initialize",$Action_$lt_eq_gt$2=function(range,replacement,allow_multiple_insertions,order){return null==replacement&&(replacement=""),null==allow_multiple_insertions&&(allow_multiple_insertions=!1),null==order&&(order=0),this.range=range,this.replacement=replacement,this.allow_multiple_insertions=allow_multiple_insertions,this.order=order,this.$freeze()},$Action_$lt_eq_gt$2.$$arity=-2),Opal.def($Action_to_s$3,"$<=>",$Action_$lt_eq_gt$2=function(other){var result=nil,result=this.$range().$begin_pos()["$<=>"](other.$range().$begin_pos());return $truthy(result["$zero?"]())?this.$order()["$<=>"](other.$order()):result},$Action_$lt_eq_gt$2.$$arity=1),Opal.def($Action_to_s$3,"$to_s",$Action_to_s$3=function(){var self=this,$ret_or_1=nil;return $truthy($truthy($ret_or_1=self.range.$length()["$=="](0))?self.replacement["$empty?"]():$ret_or_1)?"do nothing":self.range.$length()["$=="](0)?"insert "+self.replacement.$inspect():$truthy(self.replacement["$empty?"]())?"remove "+self.range.$length()+" character(s)":"replace "+self.range.$length()+" character(s) with "+self.replacement.$inspect()},$Action_to_s$3.$$arity=0),nil&&"to_s"}($$($nesting,"Rewriter"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/tree_rewriter"]=function(Opal){function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}Opal.top;var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$hash2=Opal.hash2,$lambda=Opal.lambda,$gvars=Opal.gvars,$send=Opal.send,$truthy=Opal.truthy,$range=Opal.range,$slice=(Opal.hash,Opal.slice);return Opal.add_stubs(["$attr_reader","$new","$puts","$render","$consumer=","$-","$freeze","$check_policy_validity","$method","$adjust","$source_range","$empty?","$==","$source_buffer","$raise","$combine","$action_root","$merge!","$dup","$contract","$+","$begin_pos","$range","$end_pos","$check_range_validity","$moved","$to_s","$replace","$wrap","$source","$each","$ordered_replacements","$<<","$[]","$length","$join","$nested_actions","$class","$name","$action_summary","$warn_of_deprecation","$insert_before","$insert_after","$extend","$protected","$private","$as_replacements","$size","$===","$first","$map","$to_range","$inspect","$values","$<","$>","$trigger_policy","$process"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($TreeRewriter_trigger_policy$27,$TreeRewriter_check_range_validity$25){var $TreeRewriter_transaction$16,$TreeRewriter_enforce_policy$26,$TreeRewriter_trigger_policy$27=$klass($TreeRewriter_trigger_policy$27,null,"TreeRewriter"),$nesting=[$TreeRewriter_trigger_policy$27].concat($TreeRewriter_check_range_validity$25);return $TreeRewriter_trigger_policy$27.$$prototype.diagnostics=$TreeRewriter_trigger_policy$27.$$prototype.source_buffer=$TreeRewriter_trigger_policy$27.$$prototype.enforcer=$TreeRewriter_trigger_policy$27.$$prototype.action_root=$TreeRewriter_trigger_policy$27.$$prototype.in_transaction=$TreeRewriter_trigger_policy$27.$$prototype.policy=nil,$TreeRewriter_trigger_policy$27.$attr_reader("source_buffer"),$TreeRewriter_trigger_policy$27.$attr_reader("diagnostics"),Opal.def($TreeRewriter_trigger_policy$27,"$initialize",$TreeRewriter_check_range_validity$25=function(source_buffer,swallowed_insertions){var crossing_deletions,different_replacements,$$2,$writer,all_encompassing_range;if(null==swallowed_insertions)swallowed_insertions=$hash2([],{});else if(!swallowed_insertions.$$is_hash)throw Opal.ArgumentError.$new("expected kwargs");return null==(crossing_deletions=swallowed_insertions.$$smap.crossing_deletions)&&(crossing_deletions="accept"),null==(different_replacements=swallowed_insertions.$$smap.different_replacements)&&(different_replacements="accept"),null==(swallowed_insertions=swallowed_insertions.$$smap.swallowed_insertions)&&(swallowed_insertions="accept"),this.diagnostics=$$$($$($nesting,"Diagnostic"),"Engine").$new(),$writer=[$lambda((($$2=function(diag){null==$$2.$$s||$$2.$$s;return null==$gvars.stderr&&($gvars.stderr=nil),null==diag&&(diag=nil),$gvars.stderr.$puts(diag.$render())}).$$s=this,$$2.$$arity=1,$$2))],$send(this.diagnostics,"consumer=",Opal.to_a($writer)),$rb_minus($writer.length,1),this.source_buffer=source_buffer,this.in_transaction=!1,this.policy=$hash2(["crossing_deletions","different_replacements","swallowed_insertions"],{crossing_deletions:crossing_deletions,different_replacements:different_replacements,swallowed_insertions:swallowed_insertions}).$freeze(),this.$check_policy_validity(),this.enforcer=this.$method("enforce_policy"),all_encompassing_range=this.source_buffer.$source_range().$adjust($hash2(["begin_pos","end_pos"],{begin_pos:-1,end_pos:1})),this.action_root=$$$($$($nesting,"TreeRewriter"),"Action").$new(all_encompassing_range,this.enforcer)},$TreeRewriter_check_range_validity$25.$$arity=-2),Opal.def($TreeRewriter_trigger_policy$27,"$empty?",$TreeRewriter_check_range_validity$25=function(){return this.action_root["$empty?"]()},$TreeRewriter_check_range_validity$25.$$arity=0),Opal.def($TreeRewriter_trigger_policy$27,"$merge!",$TreeRewriter_check_range_validity$25=function(with$){return this.$source_buffer()["$=="](with$.$source_buffer())||this.$raise("TreeRewriter are not for the same source_buffer"),this.action_root=this.action_root.$combine(with$.$action_root()),this},$TreeRewriter_check_range_validity$25.$$arity=1),Opal.def($TreeRewriter_trigger_policy$27,"$merge",$TreeRewriter_check_range_validity$25=function(with$){return this.$dup()["$merge!"](with$)},$TreeRewriter_check_range_validity$25.$$arity=1),Opal.def($TreeRewriter_trigger_policy$27,"$import!",$TreeRewriter_check_range_validity$25=function(foreign_rewriter,offset){var merge_effective_range,merge_with,contracted=nil;if(null==offset)offset=$hash2([],{});else if(!offset.$$is_hash)throw Opal.ArgumentError.$new("expected kwargs");return null==(offset=offset.$$smap.offset)&&(offset=0),$truthy(foreign_rewriter["$empty?"]())||(contracted=foreign_rewriter.$action_root().$contract(),merge_effective_range=$$$($$$($$$("::","Parser"),"Source"),"Range").$new(this.source_buffer,$rb_plus(contracted.$range().$begin_pos(),offset),$rb_plus(contracted.$range().$end_pos(),offset)),this.$check_range_validity(merge_effective_range),merge_with=contracted.$moved(this.source_buffer,offset),this.action_root=this.action_root.$combine(merge_with)),this},$TreeRewriter_check_range_validity$25.$$arity=-2),Opal.def($TreeRewriter_trigger_policy$27,"$replace",$TreeRewriter_check_range_validity$25=function(range,content){return this.$combine(range,$hash2(["replacement"],{replacement:content}))},$TreeRewriter_check_range_validity$25.$$arity=2),Opal.def($TreeRewriter_trigger_policy$27,"$wrap",$TreeRewriter_check_range_validity$25=function(range,insert_before,insert_after){return this.$combine(range,$hash2(["insert_before","insert_after"],{insert_before:insert_before.$to_s(),insert_after:insert_after.$to_s()}))},$TreeRewriter_check_range_validity$25.$$arity=3),Opal.def($TreeRewriter_trigger_policy$27,"$remove",$TreeRewriter_check_range_validity$25=function(range){return this.$replace(range,"".$freeze())},$TreeRewriter_check_range_validity$25.$$arity=1),Opal.def($TreeRewriter_trigger_policy$27,"$insert_before",$TreeRewriter_check_range_validity$25=function(range,content){return this.$wrap(range,content,nil)},$TreeRewriter_check_range_validity$25.$$arity=2),Opal.def($TreeRewriter_trigger_policy$27,"$insert_after",$TreeRewriter_check_range_validity$25=function(range,content){return this.$wrap(range,nil,content)},$TreeRewriter_check_range_validity$25.$$arity=2),Opal.def($TreeRewriter_trigger_policy$27,"$process",$TreeRewriter_check_range_validity$25=function(){var $$13,source=nil,chunks=nil,last_end=nil,source=this.source_buffer.$source(),chunks=[],last_end=0;return $send(this.action_root.$ordered_replacements(),"each",[],(($$13=function(range,replacement){null==$$13.$$s||$$13.$$s;return null==range&&(range=nil),null==replacement&&(replacement=nil),chunks["$<<"](source["$[]"](Opal.Range.$new(last_end,range.$begin_pos(),!0)))["$<<"](replacement),last_end=range.$end_pos()}).$$s=this,$$13.$$arity=2,$$13)),chunks["$<<"](source["$[]"](Opal.Range.$new(last_end,source.$length(),!0))),chunks.$join()},$TreeRewriter_check_range_validity$25.$$arity=0),Opal.def($TreeRewriter_trigger_policy$27,"$as_replacements",$TreeRewriter_check_range_validity$25=function(){return this.action_root.$ordered_replacements()},$TreeRewriter_check_range_validity$25.$$arity=0),Opal.def($TreeRewriter_trigger_policy$27,"$as_nested_actions",$TreeRewriter_check_range_validity$25=function(){return this.action_root.$nested_actions()},$TreeRewriter_check_range_validity$25.$$arity=0),Opal.def($TreeRewriter_trigger_policy$27,"$transaction",$TreeRewriter_transaction$16=function(){var $iter=$TreeRewriter_transaction$16.$$p,$yield=$iter||nil,self=this,previous=nil,restore_root=nil;return $iter&&($TreeRewriter_transaction$16.$$p=null),function(){try{return $yield!==nil||self.$raise(self.$class()+"#transaction requires block"),previous=self.in_transaction,self.in_transaction=!0,restore_root=self.action_root,Opal.yieldX($yield,[]),restore_root=nil,self}finally{$truthy(restore_root)&&(self.action_root=restore_root),self.in_transaction=previous}}()},$TreeRewriter_transaction$16.$$arity=0),Opal.def($TreeRewriter_trigger_policy$27,"$in_transaction?",$TreeRewriter_check_range_validity$25=function(){return this.in_transaction},$TreeRewriter_check_range_validity$25.$$arity=0),Opal.def($TreeRewriter_trigger_policy$27,"$inspect",$TreeRewriter_check_range_validity$25=function(){return"#<"+this.$class()+" "+this.$source_buffer().$name()+": "+this.$action_summary()+">"},$TreeRewriter_check_range_validity$25.$$arity=0),Opal.def($TreeRewriter_trigger_policy$27,"$insert_before_multi",$TreeRewriter_check_range_validity$25=function(range,text){return this.$class().$warn_of_deprecation(),this.$insert_before(range,text)},$TreeRewriter_check_range_validity$25.$$arity=2),Opal.def($TreeRewriter_trigger_policy$27,"$insert_after_multi",$TreeRewriter_check_range_validity$25=function(range,text){return this.$class().$warn_of_deprecation(),this.$insert_after(range,text)},$TreeRewriter_check_range_validity$25.$$arity=2),Opal.const_set($nesting[0],"DEPRECATION_WARNING",["TreeRewriter#insert_before_multi and insert_before_multi exist only for legacy compatibility.","Please update your code to use `wrap`, `insert_before` or `insert_after` instead."].$join("\n").$freeze()),$TreeRewriter_trigger_policy$27.$extend($$($nesting,"Deprecation")),$TreeRewriter_trigger_policy$27.$protected(),$TreeRewriter_trigger_policy$27.$attr_reader("action_root"),$TreeRewriter_trigger_policy$27.$private(),Opal.def($TreeRewriter_trigger_policy$27,"$action_summary",$TreeRewriter_check_range_validity$25=function(){var $$22,replacements=nil,suffix=nil,parts=nil,$case=(replacements=this.$as_replacements()).$size();return 0["$==="]($case)?"empty":($range(1,3,!1)["$==="]($case)||(replacements=replacements.$first(3),suffix="…"),parts=$send(replacements,"map",[],(($$22=function($a){null==$$22.$$s||$$22.$$s;var range=nil,str=nil;return null==$a&&($a=nil),$a=$a,range=null==($a=Opal.to_ary($a))[0]?nil:$a[0],str=null==$a[1]?nil:$a[1],$truthy(str["$empty?"]())?"-"+range.$to_range():range.$size()["$=="](0)?"+"+str.$inspect()+"@"+range.$begin_pos():"^"+str.$inspect()+"@"+range.$to_range()}).$$s=this,$$22.$$arity=1,$$22.$$has_top_level_mlhs_arg=!0,$$22)),$truthy(suffix)&&parts["$<<"](suffix),parts.$join(", "))},$TreeRewriter_check_range_validity$25.$$arity=0),Opal.const_set($nesting[0],"ACTIONS",["accept","warn","raise"].$freeze()),Opal.def($TreeRewriter_trigger_policy$27,"$check_policy_validity",$TreeRewriter_check_range_validity$25=function(){var invalid=nil,invalid=$rb_minus(this.policy.$values(),$$($nesting,"ACTIONS"));return $truthy(invalid["$empty?"]())?nil:this.$raise($$($nesting,"ArgumentError"),"Invalid policy: "+invalid.$join(", "))},$TreeRewriter_check_range_validity$25.$$arity=0),Opal.def($TreeRewriter_trigger_policy$27,"$combine",$TreeRewriter_check_range_validity$25=function(range,attributes){var action;return range=this.$check_range_validity(range),action=$$$($$($nesting,"TreeRewriter"),"Action").$new(range,this.enforcer,Opal.to_hash(attributes)),this.action_root=this.action_root.$combine(action),this},$TreeRewriter_check_range_validity$25.$$arity=2),Opal.def($TreeRewriter_trigger_policy$27,"$check_range_validity",$TreeRewriter_check_range_validity$25=function(range){var lhs,rhs,self=this,$ret_or_1=nil;return $truthy($truthy((lhs=range.$begin_pos(),rhs=0,$ret_or_1="number"==typeof lhs&&"number"==typeof rhs?lhs<rhs:lhs["$<"](rhs)))?$ret_or_1:function(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?rhs<lhs:lhs["$>"](rhs)}(range.$end_pos(),self.source_buffer.$source().$size()))&&self.$raise($$($nesting,"IndexError"),"The range "+range.$to_range()+" is outside the bounds of the source"),range},$TreeRewriter_check_range_validity$25.$$arity=1),Opal.def($TreeRewriter_trigger_policy$27,"$enforce_policy",$TreeRewriter_enforce_policy$26=function(event){var values,$iter=$TreeRewriter_enforce_policy$26.$$p,$yield=$iter||nil;return $iter&&($TreeRewriter_enforce_policy$26.$$p=null),!this.policy["$[]"](event)["$=="]("accept")&&$truthy(values=Opal.yieldX($yield,[]))?this.$trigger_policy(event,Opal.to_hash(values)):nil},$TreeRewriter_enforce_policy$26.$$arity=1),Opal.const_set($nesting[0],"POLICY_TO_LEVEL",$hash2(["warn","raise"],{warn:"warning",raise:"error"}).$freeze()),Opal.def($TreeRewriter_trigger_policy$27,"$trigger_policy",$TreeRewriter_trigger_policy$27=function(event,arguments$){var range,$a,diag,highlights,self=this,action=nil,$ret_or_2=nil;if(null==arguments$)arguments$=$hash2([],{});else if(!arguments$.$$is_hash)throw Opal.ArgumentError.$new("expected kwargs");return null==(range=arguments$.$$smap.range)&&(range=self.$raise()),null==($a=arguments$.$$smap.conflict)&&($a=nil),arguments$=Opal.kwrestargs(arguments$,{range:!0,conflict:!0}),action=$truthy($ret_or_2=self.policy["$[]"](event))?$ret_or_2:"raise",diag=$$$($$($nesting,"Parser"),"Diagnostic").$new($$($nesting,"POLICY_TO_LEVEL")["$[]"](action),event,arguments$,range),self.diagnostics.$process(diag),$truthy($a)&&($a=$a,range=null==($a=Opal.to_ary($a))[0]?nil:$a[0],highlights=$slice.call($a,1),diag=$$$($$($nesting,"Parser"),"Diagnostic").$new($$($nesting,"POLICY_TO_LEVEL")["$[]"](action),event+"_conflict",arguments$,range,highlights),self.diagnostics.$process(diag)),action["$=="]("raise")?self.$raise($$$($$($nesting,"Parser"),"ClobberingError"),"Parser::Source::TreeRewriter detected clobbering"):nil},$TreeRewriter_trigger_policy$27.$$arity=-2),nil&&"trigger_policy"}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/tree_rewriter/action"]=function(Opal){function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}function $rb_gt(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?rhs<lhs:lhs["$>"](rhs)}function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}function $rb_ge(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?rhs<=lhs:lhs["$>="](rhs)}Opal.top;var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$hash2=Opal.hash2,$truthy=Opal.truthy,$send=Opal.send;return Opal.add_stubs(["$attr_reader","$freeze","$empty?","$do_combine","$==","$<<","$begin","$concat","$flat_map","$to_proc","$end","$!","$insert_before","$insert_after","$replacement","$raise","$insertion?","$with","$begin_pos","$range","$first","$children","$end_pos","$last","$new","$+","$map","$moved","$protected","$swallow","$class","$merge","$place_in_hierarchy","$analyse_hierarchy","$[]","$fuse_deletions","$combine_children","$inject","$size","$bsearch","$bsearch_child_index","$>","$-","$>=","$===","$<=>","$<=","$check_fusible","$<","$shift","$pop","$compact!","$each","$call","$call_enforcer_for_merge","$!=","$select"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($Action_swallow$27,$Action_call_enforcer_for_merge$25){var $Action_bsearch_child_index$16,$Action_swallow$27=$klass($Action_swallow$27,null,"Action");[$Action_swallow$27].concat($Action_call_enforcer_for_merge$25);return $Action_swallow$27.$$prototype.insert_before=$Action_swallow$27.$$prototype.insert_after=$Action_swallow$27.$$prototype.children=$Action_swallow$27.$$prototype.replacement=$Action_swallow$27.$$prototype.range=$Action_swallow$27.$$prototype.enforcer=nil,$Action_swallow$27.$attr_reader("range","replacement","insert_before","insert_after"),Opal.def($Action_swallow$27,"$initialize",$Action_call_enforcer_for_merge$25=function(range,enforcer,children){var insert_before,replacement,$a;if(null==children)children=$hash2([],{});else if(!children.$$is_hash)throw Opal.ArgumentError.$new("expected kwargs");return null==(insert_before=children.$$smap.insert_before)&&(insert_before=""),null==(replacement=children.$$smap.replacement)&&(replacement=nil),null==($a=children.$$smap.insert_after)&&($a=""),null==(children=children.$$smap.children)&&(children=[]),$a=[range,enforcer,children.$freeze(),insert_before.$freeze(),replacement,$a.$freeze()],this.range=$a[0],this.enforcer=$a[1],this.children=$a[2],this.insert_before=$a[3],this.replacement=$a[4],this.insert_after=$a[5],this.$freeze()},$Action_call_enforcer_for_merge$25.$$arity=-3),Opal.def($Action_swallow$27,"$combine",$Action_call_enforcer_for_merge$25=function(action){return $truthy(action["$empty?"]())?this:this.$do_combine(action)},$Action_call_enforcer_for_merge$25.$$arity=1),Opal.def($Action_swallow$27,"$empty?",$Action_call_enforcer_for_merge$25=function(){var $ret_or_1,$ret_or_4,$ret_or_5,self=this,$ret_or_2=nil,$ret_or_3=nil;return $truthy($ret_or_1=$truthy($ret_or_2=$truthy($ret_or_3=self.insert_before["$empty?"]())?self.insert_after["$empty?"]():$ret_or_3)?self.children["$empty?"]():$ret_or_2)?$truthy($ret_or_4=self.replacement["$=="](nil))?$ret_or_4:$truthy($ret_or_5=self.replacement["$empty?"]())?self.range["$empty?"]():$ret_or_5:$ret_or_1},$Action_call_enforcer_for_merge$25.$$arity=0),Opal.def($Action_swallow$27,"$ordered_replacements",$Action_call_enforcer_for_merge$25=function(){var reps=nil,reps=[];return $truthy(this.insert_before["$empty?"]())||reps["$<<"]([this.range.$begin(),this.insert_before]),$truthy(this.replacement)&&reps["$<<"]([this.range,this.replacement]),reps.$concat($send(this.children,"flat_map",[],"ordered_replacements".$to_proc())),$truthy(this.insert_after["$empty?"]())||reps["$<<"]([this.range.$end(),this.insert_after]),reps},$Action_call_enforcer_for_merge$25.$$arity=0),Opal.def($Action_swallow$27,"$nested_actions",$Action_call_enforcer_for_merge$25=function(){var self=this,actions=nil,$ret_or_6=nil,actions=[];return $truthy($truthy($ret_or_6=self.insert_before["$empty?"]()["$!"]())?$ret_or_6:self.insert_after["$empty?"]()["$!"]())&&actions["$<<"](["wrap",self.range,self.insert_before,self.insert_after]),$truthy(self.replacement)&&actions["$<<"](["replace",self.range,self.replacement]),actions.$concat($send(self.children,"flat_map",[],"nested_actions".$to_proc()))},$Action_call_enforcer_for_merge$25.$$arity=0),Opal.def($Action_swallow$27,"$insertion?",$Action_call_enforcer_for_merge$25=function(){var $ret_or_7,$ret_or_9,self=this,$ret_or_8=nil;return $truthy($ret_or_7=$truthy($ret_or_8=self.$insert_before()["$empty?"]()["$!"]())?$ret_or_8:self.$insert_after()["$empty?"]()["$!"]())?$ret_or_7:$truthy($ret_or_9=self.$replacement())?self.$replacement()["$empty?"]()["$!"]():$ret_or_9},$Action_call_enforcer_for_merge$25.$$arity=0),Opal.def($Action_swallow$27,"$contract",$Action_call_enforcer_for_merge$25=function(){var range;return $truthy(this["$empty?"]())&&this.$raise("Empty actions can not be contracted"),$truthy(this["$insertion?"]())?this:(range=this.range.$with($hash2(["begin_pos","end_pos"],{begin_pos:this.$children().$first().$range().$begin_pos(),end_pos:this.$children().$last().$range().$end_pos()})),this.$with($hash2(["range"],{range:range})))},$Action_call_enforcer_for_merge$25.$$arity=0),Opal.def($Action_swallow$27,"$moved",$Action_call_enforcer_for_merge$25=function(source_buffer,offset){var $$9,moved_range=$$$($$$($$$("::","Parser"),"Source"),"Range").$new(source_buffer,$rb_plus(this.range.$begin_pos(),offset),$rb_plus(this.range.$end_pos(),offset));return this.$with($hash2(["range","children"],{range:moved_range,children:$send(this.$children(),"map",[],(($$9=function(child){null==$$9.$$s||$$9.$$s;return null==child&&(child=nil),child.$moved(source_buffer,offset)}).$$s=this,$$9.$$arity=1,$$9))}))},$Action_call_enforcer_for_merge$25.$$arity=2),$Action_swallow$27.$protected(),$Action_swallow$27.$attr_reader("children"),Opal.def($Action_swallow$27,"$with",$Action_call_enforcer_for_merge$25=function(insert_after){var range,enforcer,children,insert_before,replacement;if(null==insert_after)insert_after=$hash2([],{});else if(!insert_after.$$is_hash)throw Opal.ArgumentError.$new("expected kwargs");return null==(range=insert_after.$$smap.range)&&(range=this.range),null==(enforcer=insert_after.$$smap.enforcer)&&(enforcer=this.enforcer),null==(children=insert_after.$$smap.children)&&(children=this.children),null==(insert_before=insert_after.$$smap.insert_before)&&(insert_before=this.insert_before),null==(replacement=insert_after.$$smap.replacement)&&(replacement=this.replacement),null==(insert_after=insert_after.$$smap.insert_after)&&(insert_after=this.insert_after),$truthy(replacement)&&(children=this.$swallow(children)),this.$class().$new(range,enforcer,$hash2(["children","insert_before","replacement","insert_after"],{children:children,insert_before:insert_before,replacement:replacement,insert_after:insert_after}))},$Action_call_enforcer_for_merge$25.$$arity=-1),Opal.def($Action_swallow$27,"$do_combine",$Action_call_enforcer_for_merge$25=function(action){return action.$range()["$=="](this.range)?this.$merge(action):this.$place_in_hierarchy(action)},$Action_call_enforcer_for_merge$25.$$arity=1),Opal.def($Action_swallow$27,"$place_in_hierarchy",$Action_call_enforcer_for_merge$25=function(action){var extra_sibbling,self=this,family=nil,family=self.$analyse_hierarchy(action);return $truthy(family["$[]"]("fusible"))?self.$fuse_deletions(action,family["$[]"]("fusible"),[].concat(Opal.to_a(family["$[]"]("sibbling_left"))).concat(Opal.to_a(family["$[]"]("child"))).concat(Opal.to_a(family["$[]"]("sibbling_right")))):(extra_sibbling=$truthy(family["$[]"]("parent"))?family["$[]"]("parent").$do_combine(action):$truthy(family["$[]"]("child"))?action.$with($hash2(["children","enforcer"],{children:family["$[]"]("child"),enforcer:self.enforcer})).$combine_children(action.$children()):action,self.$with($hash2(["children"],{children:[].concat(Opal.to_a(family["$[]"]("sibbling_left"))).concat([extra_sibbling]).concat(Opal.to_a(family["$[]"]("sibbling_right")))})))},$Action_call_enforcer_for_merge$25.$$arity=1),Opal.def($Action_swallow$27,"$combine_children",$Action_call_enforcer_for_merge$25=function(more_children){var $$14;return $send(more_children,"inject",[this],(($$14=function(parent,new_child){null==$$14.$$s||$$14.$$s;return null==parent&&(parent=nil),null==new_child&&(new_child=nil),parent.$place_in_hierarchy(new_child)}).$$s=this,$$14.$$arity=2,$$14))},$Action_call_enforcer_for_merge$25.$$arity=1),Opal.def($Action_swallow$27,"$fuse_deletions",$Action_call_enforcer_for_merge$25=function(action,fusible,other_sibblings){var without_fusible=nil,without_fusible=this.$with($hash2(["children"],{children:other_sibblings})),fused_range=$send([action].concat(Opal.to_a(fusible)),"map",[],"range".$to_proc()).$inject("join"),fused_deletion=action.$with($hash2(["range"],{range:fused_range}));return without_fusible.$do_combine(fused_deletion)},$Action_call_enforcer_for_merge$25.$$arity=3),Opal.def($Action_swallow$27,"$bsearch_child_index",$Action_bsearch_child_index$16=function(from){var $$17,size,$ret_or_10,$iter=$Action_bsearch_child_index$16.$$p,$yield=$iter||nil;return $iter&&($Action_bsearch_child_index$16.$$p=null),null==from&&(from=0),size=this.children.$size(),$truthy($ret_or_10=$send(Opal.Range.$new(from,size,!0),"bsearch",[],(($$17=function(i){var self=null==$$17.$$s?this:$$17.$$s;return null==self.children&&(self.children=nil),null==i&&(i=nil),Opal.yield1($yield,self.children["$[]"](i))}).$$s=this,$$17.$$arity=1,$$17)))?$ret_or_10:size},$Action_bsearch_child_index$16.$$arity=-1),Opal.def($Action_swallow$27,"$analyse_hierarchy",$Action_call_enforcer_for_merge$25=function(action){var $$19,$$20,overlap_left,overlap_right,$ret_or_11,$ret_or_12,r=nil,left_index=nil,right_index=nil,lhs=nil,rhs=nil,parent=nil,contained=nil,fusible=nil,r=action.$range(),start=(left_index=$send(this,"bsearch_child_index",[],(($$19=function(child){null==$$19.$$s||$$19.$$s;return null==child&&(child=nil),$rb_gt(child.$range().$end_pos(),r.$begin_pos())}).$$s=this,$$19.$$arity=1,$$19)))["$=="](0)?0:$rb_minus(left_index,1),lhs=$rb_minus(right_index=$send(this,"bsearch_child_index",[start],(($$20=function(child){null==$$20.$$s||$$20.$$s;return null==child&&(child=nil),$rb_ge(child.$range().$begin_pos(),r.$end_pos())}).$$s=this,$$20.$$arity=1,$$20)),left_index);return 0["$==="](rhs=lhs)||((-1)["$==="](rhs)?(left_index=$rb_minus(left_index,1),right_index=$rb_plus(right_index,1),parent=this.children["$[]"](left_index)):(overlap_left=this.children["$[]"](left_index).$range().$begin_pos()["$<=>"](r.$begin_pos()),overlap_right=this.children["$[]"]($rb_minus(right_index,1)).$range().$end_pos()["$<=>"](r.$end_pos()),$truthy($truthy($ret_or_11=$truthy($ret_or_12=lhs["$=="](1))?(rhs=0,"number"==typeof(lhs=overlap_left)&&"number"==typeof rhs?lhs<=rhs:lhs["$<="](rhs)):$ret_or_12)?$rb_ge(overlap_right,0):$ret_or_11)?parent=this.children["$[]"](left_index):(contained=this.children["$[]"](Opal.Range.$new(left_index,right_index,!0)),fusible=this.$check_fusible(action,function(){return $truthy((rhs=0,"number"==typeof(lhs=overlap_left)&&"number"==typeof rhs?lhs<rhs:lhs["$<"](rhs)))?contained.$shift():nil;var lhs,rhs}(),$truthy($rb_gt(overlap_right,0))?contained.$pop():nil)))),$hash2(["parent","sibbling_left","sibbling_right","fusible","child"],{parent:parent,sibbling_left:this.children["$[]"](Opal.Range.$new(0,left_index,!0)),sibbling_right:this.children["$[]"](Opal.Range.$new(right_index,this.children.$size(),!0)),fusible:fusible,child:contained})},$Action_call_enforcer_for_merge$25.$$arity=1),Opal.def($Action_swallow$27,"$check_fusible",$Action_call_enforcer_for_merge$25=function(action,$a){var $$22,fusible=Opal.slice.call(arguments,1,arguments.length);return fusible["$compact!"](),$truthy(fusible["$empty?"]())?nil:($send(fusible,"each",[],(($$22=function(child){var $$23,kind,self=null==$$22.$$s?this:$$22.$$s,$ret_or_13=nil;return null==self.enforcer&&(self.enforcer=nil),null==child&&(child=nil),kind=$truthy($truthy($ret_or_13=action["$insertion?"]())?$ret_or_13:child["$insertion?"]())?"crossing_insertions":"crossing_deletions",$send(self.enforcer,"call",[kind],(($$23=function(){null==$$23.$$s||$$23.$$s;return $hash2(["range","conflict"],{range:action.$range(),conflict:child.$range()})}).$$s=self,$$23.$$arity=0,$$23))}).$$s=this,$$22.$$arity=1,$$22)),fusible)},$Action_call_enforcer_for_merge$25.$$arity=-2),Opal.def($Action_swallow$27,"$merge",$Action_call_enforcer_for_merge$25=function(action){var self=this,$ret_or_14=nil;return self.$call_enforcer_for_merge(action),self.$with($hash2(["insert_before","replacement","insert_after"],{insert_before:""+action.$insert_before()+self.$insert_before(),replacement:$truthy($ret_or_14=action.$replacement())?$ret_or_14:self.replacement,insert_after:""+self.$insert_after()+action.$insert_after()})).$combine_children(action.$children())},$Action_call_enforcer_for_merge$25.$$arity=1),Opal.def($Action_swallow$27,"$call_enforcer_for_merge",$Action_call_enforcer_for_merge$25=function(action){var $$26;return $send(this.enforcer,"call",["different_replacements"],(($$26=function(){var self=null==$$26.$$s?this:$$26.$$s,$ret_or_15=nil,$ret_or_16=nil;return null==self.replacement&&(self.replacement=nil),null==self.range&&(self.range=nil),$truthy($truthy($ret_or_15=$truthy($ret_or_16=self.replacement)?action.$replacement():$ret_or_16)?self.replacement["$!="](action.$replacement()):$ret_or_15)?$hash2(["range","replacement","other_replacement"],{range:self.range,replacement:action.$replacement(),other_replacement:self.replacement}):nil}).$$s=this,$$26.$$arity=0,$$26))},$Action_call_enforcer_for_merge$25.$$arity=1),Opal.def($Action_swallow$27,"$swallow",$Action_swallow$27=function(children){var $$28;return $send(this.enforcer,"call",["swallowed_insertions"],(($$28=function(){var self=null==$$28.$$s?this:$$28.$$s,insertions=nil;return null==self.range&&(self.range=nil),insertions=$send(children,"select",[],"insertion?".$to_proc()),$truthy(insertions["$empty?"]())?nil:$hash2(["range","conflict"],{range:self.range,conflict:$send(insertions,"map",[],"range".$to_proc())})}).$$s=this,$$28.$$arity=0,$$28)),[]},$Action_swallow$27.$$arity=1),nil&&"swallow"}($$($nesting,"TreeRewriter"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$module=(Opal.$$$,Opal.$$,Opal.module),$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$send=Opal.send,$truthy=Opal.truthy,$hash2=Opal.hash2,$range=Opal.range;return Opal.add_stubs(["$attr_reader","$freeze","$line","$alias_method","$column","$last_line","$last_column","$with","$update_expression","$==","$class","$reduce","$map","$instance_variables","$instance_variable_get","$send","$inject","$to_sym","$[]","$[]=","$-","$protected","$tap","$dup","$to_proc"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($Map_update_expression$15,$Map_to_hash$12){var $Map_initialize_copy$2,$Map_with$14,$Map_update_expression$15=$klass($Map_update_expression$15,null,"Map");[$Map_update_expression$15].concat($Map_to_hash$12);return $Map_update_expression$15.$$prototype.node=$Map_update_expression$15.$$prototype.expression=nil,$Map_update_expression$15.$attr_reader("node"),$Map_update_expression$15.$attr_reader("expression"),Opal.def($Map_update_expression$15,"$initialize",$Map_to_hash$12=function(expression){return this.expression=expression},$Map_to_hash$12.$$arity=1),Opal.def($Map_update_expression$15,"$initialize_copy",$Map_initialize_copy$2=function(other){var $zuper_ii,$iter=$Map_initialize_copy$2.$$p,$zuper=nil,$zuper_i=nil;for($iter&&($Map_initialize_copy$2.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return $send2(this,$find_super(this,"initialize_copy",$Map_initialize_copy$2,!1,!0),"initialize_copy",$zuper,$iter),this.node=nil},$Map_initialize_copy$2.$$arity=1),Opal.def($Map_update_expression$15,"$node=",$Map_to_hash$12=function(node){return this.node=node,this.$freeze(),this.node},$Map_to_hash$12.$$arity=1),Opal.def($Map_update_expression$15,"$line",$Map_to_hash$12=function(){return this.expression.$line()},$Map_to_hash$12.$$arity=0),$Map_update_expression$15.$alias_method("first_line","line"),Opal.def($Map_update_expression$15,"$column",$Map_to_hash$12=function(){return this.expression.$column()},$Map_to_hash$12.$$arity=0),Opal.def($Map_update_expression$15,"$last_line",$Map_to_hash$12=function(){return this.expression.$last_line()},$Map_to_hash$12.$$arity=0),Opal.def($Map_update_expression$15,"$last_column",$Map_to_hash$12=function(){return this.expression.$last_column()},$Map_to_hash$12.$$arity=0),Opal.def($Map_update_expression$15,"$with_expression",$Map_to_hash$12=function(expression_l){var $$9;return $send(this,"with",[],(($$9=function(map){null==$$9.$$s||$$9.$$s;return null==map&&(map=nil),map.$update_expression(expression_l)}).$$s=this,$$9.$$arity=1,$$9))},$Map_to_hash$12.$$arity=1),Opal.def($Map_update_expression$15,"$==",$Map_to_hash$12=function(other){var $$11,$ret_or_1;return $truthy($ret_or_1=other.$class()["$=="](this.$class()))?$send(this.$instance_variables(),"map",[],(($$11=function(ivar){var self=null==$$11.$$s?this:$$11.$$s;return null==ivar&&(ivar=nil),self.$instance_variable_get(ivar)["$=="](other.$send("instance_variable_get",ivar))}).$$s=this,$$11.$$arity=1,$$11)).$reduce("&"):$ret_or_1},$Map_to_hash$12.$$arity=1),Opal.def($Map_update_expression$15,"$to_hash",$Map_to_hash$12=function(){var $$13;return $send(this.$instance_variables(),"inject",[$hash2([],{})],(($$13=function(hash,rhs){var self=null==$$13.$$s?this:$$13.$$s,lhs=nil;return null==hash&&(hash=nil),null==rhs&&(rhs=nil),rhs.$to_sym()["$=="]("@node")||(lhs=[rhs["$[]"]($range(1,-1,!1)).$to_sym(),self.$instance_variable_get(rhs)],$send(hash,"[]=",Opal.to_a(lhs)),rhs=1,"number"==typeof(lhs=lhs.length)&&"number"==typeof rhs||lhs["$-"](rhs)),hash}).$$s=this,$$13.$$arity=2,$$13))},$Map_to_hash$12.$$arity=0),$Map_update_expression$15.$protected(),Opal.def($Map_update_expression$15,"$with",$Map_with$14=function(){var $iter=$Map_with$14.$$p,block=$iter||nil;return $iter&&($Map_with$14.$$p=null),$iter&&($Map_with$14.$$p=null),$send(this.$dup(),"tap",[],block.$to_proc())},$Map_with$14.$$arity=0),Opal.def($Map_update_expression$15,"$update_expression",$Map_update_expression$15=function(expression_l){return this.expression=expression_l},$Map_update_expression$15.$$arity=1),nil&&"update_expression"}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/operator"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super;return Opal.add_stubs(["$attr_reader"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($base,self,$parent_nesting){var $Operator_initialize$1,self=$klass($base,self,"Operator");[self].concat($parent_nesting);return self.$attr_reader("operator"),Opal.def(self,"$initialize",$Operator_initialize$1=function(operator,expression){var $iter=$Operator_initialize$1.$$p;return $iter&&($Operator_initialize$1.$$p=null),this.operator=operator,$send2(this,$find_super(this,"initialize",$Operator_initialize$1,!1,!0),"initialize",[expression],null)},$Operator_initialize$1.$$arity=2),nil&&"initialize"}($$($nesting,"Map"),$$($nesting,"Map"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/collection"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super;return Opal.add_stubs(["$attr_reader"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($base,self,$parent_nesting){var $Collection_initialize$1,self=$klass($base,self,"Collection");[self].concat($parent_nesting);return self.$attr_reader("begin"),self.$attr_reader("end"),Opal.def(self,"$initialize",$Collection_initialize$1=function(begin_l,$a,expression_l){var $iter=$Collection_initialize$1.$$p;return $iter&&($Collection_initialize$1.$$p=null),$a=[begin_l,$a],this.begin=$a[0],this.end=$a[1],$send2(this,$find_super(this,"initialize",$Collection_initialize$1,!1,!0),"initialize",[expression_l],null)},$Collection_initialize$1.$$arity=3),nil&&"initialize"}($$($nesting,"Map"),$$($nesting,"Map"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/constant"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$send=Opal.send;return Opal.add_stubs(["$attr_reader","$with","$update_operator","$protected"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($base,$Constant_update_operator$4,$Constant_with_operator$2){var $Constant_initialize$1,$Constant_update_operator$4=$klass($base,$Constant_update_operator$4,"Constant");[$Constant_update_operator$4].concat($Constant_with_operator$2);return $Constant_update_operator$4.$attr_reader("double_colon"),$Constant_update_operator$4.$attr_reader("name"),$Constant_update_operator$4.$attr_reader("operator"),Opal.def($Constant_update_operator$4,"$initialize",$Constant_initialize$1=function(double_colon,$a,expression){var $iter=$Constant_initialize$1.$$p;return $iter&&($Constant_initialize$1.$$p=null),$a=[double_colon,$a],this.double_colon=$a[0],this.name=$a[1],$send2(this,$find_super(this,"initialize",$Constant_initialize$1,!1,!0),"initialize",[expression],null)},$Constant_initialize$1.$$arity=3),Opal.def($Constant_update_operator$4,"$with_operator",$Constant_with_operator$2=function(operator_l){var $$3;return $send(this,"with",[],(($$3=function(map){null==$$3.$$s||$$3.$$s;return null==map&&(map=nil),map.$update_operator(operator_l)}).$$s=this,$$3.$$arity=1,$$3))},$Constant_with_operator$2.$$arity=1),$Constant_update_operator$4.$protected(),Opal.def($Constant_update_operator$4,"$update_operator",$Constant_update_operator$4=function(operator_l){return this.operator=operator_l},$Constant_update_operator$4.$$arity=1),nil&&"update_operator"}($$($nesting,"Map"),$$($nesting,"Map"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/variable"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$send=Opal.send;return Opal.add_stubs(["$attr_reader","$with","$update_operator","$protected"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($base,$Variable_update_operator$4,$Variable_with_operator$2){var $Variable_initialize$1,$Variable_update_operator$4=$klass($base,$Variable_update_operator$4,"Variable");[$Variable_update_operator$4].concat($Variable_with_operator$2);return $Variable_update_operator$4.$attr_reader("name"),$Variable_update_operator$4.$attr_reader("operator"),Opal.def($Variable_update_operator$4,"$initialize",$Variable_initialize$1=function(name_l,expression_l){var $iter=$Variable_initialize$1.$$p;return $iter&&($Variable_initialize$1.$$p=null),null==expression_l&&(expression_l=name_l),this.name=name_l,$send2(this,$find_super(this,"initialize",$Variable_initialize$1,!1,!0),"initialize",[expression_l],null)},$Variable_initialize$1.$$arity=-2),Opal.def($Variable_update_operator$4,"$with_operator",$Variable_with_operator$2=function(operator_l){var $$3;return $send(this,"with",[],(($$3=function(map){null==$$3.$$s||$$3.$$s;return null==map&&(map=nil),map.$update_operator(operator_l)}).$$s=this,$$3.$$arity=1,$$3))},$Variable_with_operator$2.$$arity=1),$Variable_update_operator$4.$protected(),Opal.def($Variable_update_operator$4,"$update_operator",$Variable_update_operator$4=function(operator_l){return this.operator=operator_l},$Variable_update_operator$4.$$arity=1),nil&&"update_operator"}($$($nesting,"Map"),$$($nesting,"Map"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/keyword"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super;return Opal.add_stubs(["$attr_reader"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($base,self,$parent_nesting){var $Keyword_initialize$1,self=$klass($base,self,"Keyword");[self].concat($parent_nesting);return self.$attr_reader("keyword"),self.$attr_reader("begin"),self.$attr_reader("end"),Opal.def(self,"$initialize",$Keyword_initialize$1=function(keyword_l,begin_l,$a,expression_l){var $iter=$Keyword_initialize$1.$$p;return $iter&&($Keyword_initialize$1.$$p=null),this.keyword=keyword_l,$a=[begin_l,$a],this.begin=$a[0],this.end=$a[1],$send2(this,$find_super(this,"initialize",$Keyword_initialize$1,!1,!0),"initialize",[expression_l],null)},$Keyword_initialize$1.$$arity=4),nil&&"initialize"}($$($nesting,"Map"),$$($nesting,"Map"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/definition"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super;return Opal.add_stubs(["$attr_reader","$join"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($base,self,$parent_nesting){var $Definition_initialize$1,self=$klass($base,self,"Definition");[self].concat($parent_nesting);return self.$$prototype.keyword=self.$$prototype.end=nil,self.$attr_reader("keyword"),self.$attr_reader("operator"),self.$attr_reader("name"),self.$attr_reader("end"),Opal.def(self,"$initialize",$Definition_initialize$1=function(keyword_l,operator_l,name_l,end_l){var $iter=$Definition_initialize$1.$$p;return $iter&&($Definition_initialize$1.$$p=null),this.keyword=keyword_l,this.operator=operator_l,this.name=name_l,this.end=end_l,$send2(this,$find_super(this,"initialize",$Definition_initialize$1,!1,!0),"initialize",[this.keyword.$join(this.end)],null)},$Definition_initialize$1.$$arity=4),nil&&"initialize"}($$($nesting,"Map"),$$($nesting,"Map"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/method_definition"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$truthy=Opal.truthy;return Opal.add_stubs(["$attr_reader","$join"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($base,self,$parent_nesting){var $MethodDefinition_initialize$1,self=$klass($base,self,"MethodDefinition");[self].concat($parent_nesting);return self.$$prototype.keyword=nil,self.$attr_reader("keyword"),self.$attr_reader("operator"),self.$attr_reader("name"),self.$attr_reader("end"),self.$attr_reader("assignment"),Opal.def(self,"$initialize",$MethodDefinition_initialize$1=function(keyword_l,operator_l,name_l,end_l,assignment_l,body_l){var $iter=$MethodDefinition_initialize$1.$$p,$ret_or_1=nil;return $iter&&($MethodDefinition_initialize$1.$$p=null),this.keyword=keyword_l,this.operator=operator_l,this.name=name_l,this.end=end_l,this.assignment=assignment_l,$send2(this,$find_super(this,"initialize",$MethodDefinition_initialize$1,!1,!0),"initialize",[this.keyword.$join($truthy($ret_or_1=end_l)?$ret_or_1:body_l)],null)},$MethodDefinition_initialize$1.$$arity=6),nil&&"initialize"}($$($nesting,"Map"),$$($nesting,"Map"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/send"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$send=Opal.send;return Opal.add_stubs(["$attr_reader","$with","$update_operator","$protected"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($base,$Send_update_operator$4,$Send_with_operator$2){var $Send_initialize$1,$Send_update_operator$4=$klass($base,$Send_update_operator$4,"Send");[$Send_update_operator$4].concat($Send_with_operator$2);return $Send_update_operator$4.$attr_reader("dot"),$Send_update_operator$4.$attr_reader("selector"),$Send_update_operator$4.$attr_reader("operator"),$Send_update_operator$4.$attr_reader("begin"),$Send_update_operator$4.$attr_reader("end"),Opal.def($Send_update_operator$4,"$initialize",$Send_initialize$1=function(dot_l,selector_l,begin_l,$a,expression_l){var $iter=$Send_initialize$1.$$p;return $iter&&($Send_initialize$1.$$p=null),this.dot=dot_l,this.selector=selector_l,$a=[begin_l,$a],this.begin=$a[0],this.end=$a[1],$send2(this,$find_super(this,"initialize",$Send_initialize$1,!1,!0),"initialize",[expression_l],null)},$Send_initialize$1.$$arity=5),Opal.def($Send_update_operator$4,"$with_operator",$Send_with_operator$2=function(operator_l){var $$3;return $send(this,"with",[],(($$3=function(map){null==$$3.$$s||$$3.$$s;return null==map&&(map=nil),map.$update_operator(operator_l)}).$$s=this,$$3.$$arity=1,$$3))},$Send_with_operator$2.$$arity=1),$Send_update_operator$4.$protected(),Opal.def($Send_update_operator$4,"$update_operator",$Send_update_operator$4=function(operator_l){return this.operator=operator_l},$Send_update_operator$4.$$arity=1),nil&&"update_operator"}($$($nesting,"Map"),$$($nesting,"Map"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/index"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$send=Opal.send;return Opal.add_stubs(["$attr_reader","$with","$update_operator","$protected"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($base,$Index_update_operator$4,$Index_with_operator$2){var $Index_initialize$1,$Index_update_operator$4=$klass($base,$Index_update_operator$4,"Index");[$Index_update_operator$4].concat($Index_with_operator$2);return $Index_update_operator$4.$attr_reader("begin"),$Index_update_operator$4.$attr_reader("end"),$Index_update_operator$4.$attr_reader("operator"),Opal.def($Index_update_operator$4,"$initialize",$Index_initialize$1=function(begin_l,$a,expression_l){var $iter=$Index_initialize$1.$$p;return $iter&&($Index_initialize$1.$$p=null),$a=[begin_l,$a],this.begin=$a[0],this.end=$a[1],this.operator=nil,$send2(this,$find_super(this,"initialize",$Index_initialize$1,!1,!0),"initialize",[expression_l],null)},$Index_initialize$1.$$arity=3),Opal.def($Index_update_operator$4,"$with_operator",$Index_with_operator$2=function(operator_l){var $$3;return $send(this,"with",[],(($$3=function(map){null==$$3.$$s||$$3.$$s;return null==map&&(map=nil),map.$update_operator(operator_l)}).$$s=this,$$3.$$arity=1,$$3))},$Index_with_operator$2.$$arity=1),$Index_update_operator$4.$protected(),Opal.def($Index_update_operator$4,"$update_operator",$Index_update_operator$4=function(operator_l){return this.operator=operator_l},$Index_update_operator$4.$$arity=1),nil&&"update_operator"}($$($nesting,"Map"),$$($nesting,"Map"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/condition"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super;return Opal.add_stubs(["$attr_reader"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($base,self,$parent_nesting){var $Condition_initialize$1,self=$klass($base,self,"Condition");[self].concat($parent_nesting);return 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function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($base,self,$parent_nesting){var $Ternary_initialize$1,self=$klass($base,self,"Ternary");[self].concat($parent_nesting);return self.$attr_reader("question"),self.$attr_reader("colon"),Opal.def(self,"$initialize",$Ternary_initialize$1=function(question_l,$a,expression_l){var $iter=$Ternary_initialize$1.$$p;return $iter&&($Ternary_initialize$1.$$p=null),$a=[question_l,$a],this.question=$a[0],this.colon=$a[1],$send2(this,$find_super(this,"initialize",$Ternary_initialize$1,!1,!0),"initialize",[expression_l],null)},$Ternary_initialize$1.$$arity=3),nil&&"initialize"}($$($nesting,"Map"),$$($nesting,"Map"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/for"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super;return Opal.add_stubs(["$attr_reader"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($base,self,$parent_nesting){var $For_initialize$1,self=$klass($base,self,"For");[self].concat($parent_nesting);return self.$attr_reader("keyword","in"),self.$attr_reader("begin","end"),Opal.def(self,"$initialize",$For_initialize$1=function(keyword_l,$a,begin_l,end_l,expression_l){var $iter=$For_initialize$1.$$p;return $iter&&($For_initialize$1.$$p=null),$a=[keyword_l,$a],this.keyword=$a[0],this.in=$a[1],$a=[begin_l,end_l],this.begin=$a[0],this.end=$a[1],$send2(this,$find_super(this,"initialize",$For_initialize$1,!1,!0),"initialize",[expression_l],null)},$For_initialize$1.$$arity=5),nil&&"initialize"}($$($nesting,"Map"),$$($nesting,"Map"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/rescue_body"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super;return Opal.add_stubs(["$attr_reader"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($base,self,$parent_nesting){var $RescueBody_initialize$1,self=$klass($base,self,"RescueBody");[self].concat($parent_nesting);return self.$attr_reader("keyword"),self.$attr_reader("assoc"),self.$attr_reader("begin"),Opal.def(self,"$initialize",$RescueBody_initialize$1=function(keyword_l,assoc_l,begin_l,expression_l){var $iter=$RescueBody_initialize$1.$$p;return 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$ObjcKwarg_initialize$1,self=$klass($base,self,"ObjcKwarg");[self].concat($parent_nesting);return self.$attr_reader("keyword"),self.$attr_reader("operator"),self.$attr_reader("argument"),Opal.def(self,"$initialize",$ObjcKwarg_initialize$1=function(keyword_l,operator_l,$a,expression_l){var $iter=$ObjcKwarg_initialize$1.$$p;return $iter&&($ObjcKwarg_initialize$1.$$p=null),$a=[keyword_l,operator_l,$a],this.keyword=$a[0],this.operator=$a[1],this.argument=$a[2],$send2(this,$find_super(this,"initialize",$ObjcKwarg_initialize$1,!1,!0),"initialize",[expression_l],null)},$ObjcKwarg_initialize$1.$$arity=4),nil&&"initialize"}($$($nesting,"Map"),$$($nesting,"Map"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/syntax_error"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super;return Opal.add_stubs(["$attr_reader","$message"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,self,$parent_nesting){var $SyntaxError_initialize$1,self=$klass($base,self,"SyntaxError");[self].concat($parent_nesting);return self.$attr_reader("diagnostic"),Opal.def(self,"$initialize",$SyntaxError_initialize$1=function(diagnostic){var $iter=$SyntaxError_initialize$1.$$p;return $iter&&($SyntaxError_initialize$1.$$p=null),this.diagnostic=diagnostic,$send2(this,$find_super(this,"initialize",$SyntaxError_initialize$1,!1,!0),"initialize",[diagnostic.$message()],null)},$SyntaxError_initialize$1.$$arity=1),nil&&"initialize"}($nesting[0],$$($nesting,"StandardError"),$nesting)}($nesting[0],$nesting)},Opal.modules["parser/clobbering_error"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass;return function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$super,$parent_nesting){[$klass($base,$super,"ClobberingError")].concat($parent_nesting);return nil}($nesting[0],$$($nesting,"RuntimeError"),$nesting)}($nesting[0],$nesting)},Opal.modules["parser/diagnostic"]=function(Opal){function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}function $rb_times(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs*rhs:lhs["$*"](rhs)}Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$hash2=Opal.hash2,$send=Opal.send;return 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null==ellipsis&&(ellipsis=!1),null==rhs&&(rhs=!1),source_line=range.$source_line(),highlight_line=$rb_times(" ",source_line.$length()),$send(this.highlights,"each",[],(($$5=function(highlight){var line_range,$writer;null==$$5.$$s||$$5.$$s;return null==highlight&&(highlight=nil),line_range=range.$source_buffer().$line_range(range.$line()),$truthy(highlight=highlight.$intersect(line_range))?($writer=[highlight.$column_range(),$rb_times("~",highlight.$size())],$send(highlight_line,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]):nil}).$$s=this,$$5.$$arity=1,$$5)),$truthy(range["$is?"]("\n"))?highlight_line=$rb_plus(highlight_line,"^"):($writer=$truthy($truthy($ret_or_3=rhs["$!"]())?(lhs=range.$size(),rhs=1,"number"==typeof lhs&&"number"==typeof 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$truthy(range.$line()["$!="](range.$last_line()))?range.$adjust($hash2(["begin_pos"],{begin_pos:range.$source()["$=~"](/[^\n]*$/)})):range},$Diagnostic_last_line_only$8.$$arity=1),nil&&"last_line_only"}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/diagnostic/engine"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy;return Opal.add_stubs(["$attr_accessor","$ignore?","$call","$raise?","$raise","$protected","$==","$level"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($Engine_raise$ques$4,$Engine_ignore$ques$3){var $Engine_raise$ques$4=$klass($Engine_raise$ques$4,null,"Engine"),$nesting=[$Engine_raise$ques$4].concat($Engine_ignore$ques$3);return 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$StaticEnvironment_empty$ques$12=$klass($StaticEnvironment_empty$ques$12,null,"StaticEnvironment"),$nesting=[$StaticEnvironment_empty$ques$12].concat($StaticEnvironment_declared_anonymous_blockarg$ques$11);return $StaticEnvironment_empty$ques$12.$$prototype.stack=$StaticEnvironment_empty$ques$12.$$prototype.variables=nil,Opal.const_set($nesting[0],"FORWARD_ARGS","FORWARD_ARGS"),Opal.const_set($nesting[0],"ANONYMOUS_BLOCKARG","ANONYMOUS_BLOCKARG"),Opal.def($StaticEnvironment_empty$ques$12,"$initialize",$StaticEnvironment_declared_anonymous_blockarg$ques$11=function(){return this.$reset()},$StaticEnvironment_declared_anonymous_blockarg$ques$11.$$arity=0),Opal.def($StaticEnvironment_empty$ques$12,"$reset",$StaticEnvironment_declared_anonymous_blockarg$ques$11=function(){return 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null==lookahead&&(lookahead=nil),delimiter=self.$coerce_encoding(delimiter),$truthy($truthy($ret_or_9=self.start_delim)?self.start_delim["$=="](delimiter):$ret_or_9)?self.nesting=$rb_plus(self.nesting,1):$truthy(self["$delimiter?"](delimiter))&&(self.nesting=$rb_minus(self.nesting,1)),self.nesting["$=="](0)?($truthy(self["$words?"]())&&self.$extend_space(ts,ts),$truthy($truthy($ret_or_10=$truthy($ret_or_11=$truthy($ret_or_12=$truthy($ret_or_13=lookahead)?self.label_allowed:$ret_or_13)?lookahead["$[]"](0)["$=="]($enc(":","ASCII-8BIT")):$ret_or_12)?lookahead["$[]"](1)["$!="]($enc(":","ASCII-8BIT")):$ret_or_11)?self.start_tok["$=="]("tSTRING_BEG"):$ret_or_10)?(self.$flush_string(),self.$emit("tLABEL_END",self.end_delim,ts,$rb_plus(te,1))):$truthy(self.monolithic)?self.$emit("tSTRING",self.buffer,self.str_s,te):($truthy(self["$heredoc?"]())||self.$flush_string(),self.$emit("tSTRING_END",self.end_delim,ts,te))):nil},$Literal_emit_start_tok$24.$$arity=-4),Opal.def($Literal_emit$25,"$infer_indent_level",$Literal_emit_start_tok$24=function(line){var $$13,self=this,indent_level=nil;return $truthy(self.dedent_body["$!"]())?nil:(indent_level=0,function(){var $brk=Opal.new_brk();try{return $send(line,"each_char",[],(($$13=function(char$){var self=null==$$13.$$s?this:$$13.$$s,lhs=nil,rhs=nil;return null==self.dedent_level&&(self.dedent_level=nil),null==char$&&(char$=nil)," "["$==="](lhs=char$)?indent_level=$rb_plus(indent_level,1):"\t"["$==="](lhs)?indent_level=$rb_plus(indent_level,$rb_minus(8,indent_level["$%"](8))):($truthy($truthy(rhs=self.dedent_level["$nil?"]())?rhs:(lhs=self.dedent_level,rhs=indent_level,"number"==typeof lhs&&"number"==typeof rhs?rhs<lhs:lhs["$>"](rhs)))&&(self.dedent_level=indent_level),void Opal.brk(nil,$brk))}).$$s=self,$$13.$$brk=$brk,$$13.$$arity=1,$$13))}catch(err){if(err===$brk)return err.$v;throw err}}())},$Literal_emit_start_tok$24.$$arity=1),Opal.def($Literal_emit$25,"$start_interp_brace",$Literal_emit_start_tok$24=function(){return 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self=this,$ret_or_17=nil,str_e=$truthy($ret_or_17=self.heredoc_e)?$ret_or_17:$rb_plus(self.str_s,self.str_type.$length());return self.$emit(self.start_tok,self.str_type,self.str_s,str_e)},$Literal_emit_start_tok$24.$$arity=0),Opal.def($Literal_emit$25,"$emit",$Literal_emit$25=function(token,type,s,e){return this.lexer.$send("emit",token,type,s,e)},$Literal_emit$25.$$arity=4),nil&&"emit"}($$($nesting,"Lexer"),$nesting)}($nesting[0],$nesting)},Opal.modules["parser/lexer/stack_state"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$alias=Opal.alias;return Opal.add_stubs(["$freeze","$clear","$|","$<<","$&","$>>","$==","$[]","$to_s"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function(self,$StackState_to_s$8){self=$klass(self,null,"StackState"),[self].concat($StackState_to_s$8);return 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this.emit_lambda=!0,this.emit_procarg0=!0,this.emit_encoding=!0,this.emit_index=!0,this.emit_arg_inside_procarg0=!0,this.emit_forward_arg=!0,this.emit_kwargs=!0,this.emit_match_pattern=!0},$modernize$1.$$arity=0)}(Opal.get_singleton_class($Default_kwargs$ques$207),$nesting),$Default_kwargs$ques$207.$attr_accessor("parser"),$Default_kwargs$ques$207.$attr_accessor("emit_file_line_as_literals"),Opal.def($Default_kwargs$ques$207,"$initialize",$Default_rewrite_hash_args_to_kwargs$206=function(){return this.emit_file_line_as_literals=!0},$Default_rewrite_hash_args_to_kwargs$206.$$arity=0),Opal.def($Default_kwargs$ques$207,"$nil",$Default_rewrite_hash_args_to_kwargs$206=function(nil_t){return this.$n0("nil",this.$token_map(nil_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$true",$Default_rewrite_hash_args_to_kwargs$206=function(true_t){return this.$n0("true",this.$token_map(true_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$false",$Default_rewrite_hash_args_to_kwargs$206=function(false_t){return this.$n0("false",this.$token_map(false_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$integer",$Default_rewrite_hash_args_to_kwargs$206=function(integer_t){return this.$numeric("int",integer_t)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$float",$Default_rewrite_hash_args_to_kwargs$206=function(float_t){return this.$numeric("float",float_t)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$rational",$Default_rewrite_hash_args_to_kwargs$206=function(rational_t){return 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value=nil,operator_loc=nil,$a=[].concat(Opal.to_a(numeric)),value=null==$a[0]?nil:$a[0],operator_loc=this.$loc(unary_t),$case=this.$value(unary_t);return"+"["$==="]($case)?value=value["$+@"]():"-"["$==="]($case)&&(value=value["$-@"]()),numeric.$updated(nil,[value],$hash2(["location"],{location:$$$($$$($$($nesting,"Source"),"Map"),"Operator").$new(operator_loc,operator_loc.$join(numeric.$loc().$expression()))}))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$__LINE__",$Default_rewrite_hash_args_to_kwargs$206=function(__LINE__t){return this.$n0("__LINE__",this.$token_map(__LINE__t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$string",$Default_rewrite_hash_args_to_kwargs$206=function(string_t){return 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self=this,str=nil,$ret_or_2=nil;return $truthy(self["$collapse_string_parts?"](parts))?(str=parts.$first(),self.$n("sym",[str.$children().$first().$to_sym()],self.$collection_map(begin_t,str.$loc().$expression(),end_t))):$truthy($truthy($ret_or_2=self.parser.$version()["$=="](18))?parts["$empty?"]():$ret_or_2)?self.$diagnostic("error","empty_symbol",nil,self.$loc(begin_t).$join(self.$loc(end_t))):self.$n("dsym",[].concat(Opal.to_a(parts)),self.$collection_map(begin_t,parts,end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$xstring_compose",$Default_rewrite_hash_args_to_kwargs$206=function(begin_t,parts,end_t){return this.$n("xstr",[].concat(Opal.to_a(parts)),this.$string_map(begin_t,parts,end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$dedent_string",$Default_rewrite_hash_args_to_kwargs$206=function(node,dedent_level){var $$23,$case,dedenter=nil,str=nil,children=nil;return 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this.$n("regopt",options,this.$token_map(regopt_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$regexp_compose",$Default_rewrite_hash_args_to_kwargs$206=function(begin_t,parts,end_t,options){var e=nil;try{this.$static_regexp(parts,options)}catch($err){if(!Opal.rescue($err,[$$($nesting,"RegexpError")]))throw $err;e=$err;try{this.$diagnostic("error","invalid_regexp",$hash2(["message"],{message:e.$message()}),this.$loc(begin_t).$join(this.$loc(end_t)))}finally{Opal.pop_exception()}}return this.$n("regexp",parts["$<<"](options),this.$regexp_map(begin_t,end_t,options))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=4),Opal.def($Default_kwargs$ques$207,"$array",$Default_rewrite_hash_args_to_kwargs$206=function(begin_t,elements,end_t){return 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this.$n("array",[].concat(Opal.to_a(parts)),this.$collection_map(begin_t,parts,end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$symbols_compose",$Default_rewrite_hash_args_to_kwargs$206=function(begin_t,parts,end_t){var $$31;return parts=$send(parts,"map",[],(($$31=function(part){null==$$31.$$s||$$31.$$s;var $a,$case=nil,value=nil;return null==part&&(part=nil),$case=part.$type(),"str"["$==="]($case)?($a=[].concat(Opal.to_a(part)),value=null==$a[0]?nil:$a[0],part.$updated("sym",[value.$to_sym()])):"dstr"["$==="]($case)?part.$updated("dsym"):part}).$$s=this,$$31.$$arity=1,$$31)),this.$n("array",[].concat(Opal.to_a(parts)),this.$collection_map(begin_t,parts,end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$pair",$Default_rewrite_hash_args_to_kwargs$206=function(key,assoc_t,value){return this.$n("pair",[key,value],this.$binary_op_map(key,assoc_t,value))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$pair_list_18",$Default_rewrite_hash_args_to_kwargs$206=function(list){var $$34;return $truthy(list.$size()["$%"](2)["$!="](0))?this.$diagnostic("error","odd_hash",nil,list.$last().$loc().$expression()):$send(list.$each_slice(2),"map",[],(($$34=function(key,value){var self=null==$$34.$$s?this:$$34.$$s;return null==key&&(key=nil),null==value&&(value=nil),self.$n("pair",[key,value],self.$binary_op_map(key,nil,value))}).$$s=this,$$34.$$arity=2,$$34))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$pair_keyword",$Default_rewrite_hash_args_to_kwargs$206=function(key_t,value){var $a=this.$pair_keyword_map(key_t,value),$a=Opal.to_ary($a),key_map=null==$a[0]?nil:$a[0],pair_map=null==$a[1]?nil:$a[1],key=this.$n("sym",[this.$value(key_t).$to_sym()],key_map);return this.$n("pair",[key,value],pair_map)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$pair_quoted",$Default_rewrite_hash_args_to_kwargs$206=function(begin_t,parts,end_t,value){var pair_map,key,$a=this.$pair_quoted_map(begin_t,end_t,value),$a=Opal.to_ary($a);return end_t=null==$a[0]?nil:$a[0],pair_map=null==$a[1]?nil:$a[1],key=this.$symbol_compose(begin_t,parts,end_t),this.$n("pair",[key,value],pair_map)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=4),Opal.def($Default_kwargs$ques$207,"$pair_label",$Default_rewrite_hash_args_to_kwargs$206=function(key_t){var self=this,label=nil,value_l=self.$loc(key_t).$adjust($hash2(["end_pos"],{end_pos:-1})),label=self.$value(key_t),value=$truthy(label["$=~"](/^[[:lower:]]/))?self.$n("ident",[label.$to_sym()],$$$($$$($$($nesting,"Source"),"Map"),"Variable").$new(value_l)):self.$n("const",[nil,label.$to_sym()],$$$($$$($$($nesting,"Source"),"Map"),"Constant").$new(nil,value_l,value_l));return self.$pair_keyword(key_t,self.$accessible(value))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$kwsplat",$Default_rewrite_hash_args_to_kwargs$206=function(dstar_t,arg){return this.$n("kwsplat",[arg],this.$unary_op_map(dstar_t,arg))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$associate",$Default_rewrite_hash_args_to_kwargs$206=function(begin_t,pairs,end_t){var $$40;return $send(0,"upto",[$rb_minus(pairs.$length(),1)],(($$40=function(i){var $$41,self=null==$$40.$$s?this:$$40.$$s;return null==i&&(i=nil),$send($rb_plus(i,1),"upto",[$rb_minus(pairs.$length(),1)],(($$41=function(j){var $a,$case,self=null==$$41.$$s?this:$$41.$$s,key1=nil,key2=nil,do_warn=nil,$ret_or_3=nil;return 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this.$n("ivar",[this.$value(token).$to_sym()],this.$variable_map(token))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$gvar",$Default_rewrite_hash_args_to_kwargs$206=function(token){return this.$n("gvar",[this.$value(token).$to_sym()],this.$variable_map(token))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$cvar",$Default_rewrite_hash_args_to_kwargs$206=function(token){return this.$n("cvar",[this.$value(token).$to_sym()],this.$variable_map(token))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$back_ref",$Default_rewrite_hash_args_to_kwargs$206=function(token){return this.$n("back_ref",[this.$value(token).$to_sym()],this.$token_map(token))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$nth_ref",$Default_rewrite_hash_args_to_kwargs$206=function(token){return this.$n("nth_ref",[this.$value(token)],this.$token_map(token))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$accessible",$Default_rewrite_hash_args_to_kwargs$206=function(node){var $$52,$a,self=this,name=nil,$ret_or_4=nil;return $a=node.$type(),"__FILE__"["$==="]($a)?$truthy(self.emit_file_line_as_literals)?self.$n("str",[node.$loc().$expression().$source_buffer().$name()],node.$loc().$dup()):node:"__LINE__"["$==="]($a)?$truthy(self.emit_file_line_as_literals)?self.$n("int",[node.$loc().$expression().$line()],node.$loc().$dup()):node:"__ENCODING__"["$==="]($a)?$truthy(self.$class().$emit_encoding()["$!"]())?self.$n("const",[self.$n("const",[nil,"Encoding"],nil),"UTF_8"],node.$loc().$dup()):node:"ident"["$==="]($a)?($a=[].concat(Opal.to_a(node)),name=null==$a[0]?nil:$a[0],$truthy($send(["?","!"],"any?",[],(($$52=function(c){null==$$52.$$s||$$52.$$s;return null==c&&(c=nil),name.$to_s()["$end_with?"](c)}).$$s=self,$$52.$$arity=1,$$52)))&&self.$diagnostic("error","invalid_id_to_get",$hash2(["identifier"],{identifier:name.$to_s()}),node.$loc().$expression()),$truthy($truthy($ret_or_4=$rb_ge(self.parser.$version(),27))?self.parser.$try_declare_numparam(node):$ret_or_4)?node.$updated("lvar"):$truthy(self.parser.$static_env()["$declared?"](name))?(name.$to_s()["$=="](self.$parser().$current_arg_stack().$top())&&self.$diagnostic("error","circular_argument_reference",$hash2(["var_name"],{var_name:name.$to_s()}),node.$loc().$expression()),node.$updated("lvar")):self.$n("send",[nil,name],self.$var_send_map(node))):node},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$const",$Default_rewrite_hash_args_to_kwargs$206=function(name_t){return this.$n("const",[nil,this.$value(name_t).$to_sym()],this.$constant_map(nil,nil,name_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$const_global",$Default_rewrite_hash_args_to_kwargs$206=function(t_colon3,name_t){var cbase=this.$n0("cbase",this.$token_map(t_colon3));return this.$n("const",[cbase,this.$value(name_t).$to_sym()],this.$constant_map(cbase,t_colon3,name_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$const_fetch",$Default_rewrite_hash_args_to_kwargs$206=function(scope,t_colon2,name_t){return this.$n("const",[scope,this.$value(name_t).$to_sym()],this.$constant_map(scope,t_colon2,name_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$__ENCODING__",$Default_rewrite_hash_args_to_kwargs$206=function(__ENCODING__t){return this.$n0("__ENCODING__",this.$token_map(__ENCODING__t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$assignable",$Default_rewrite_hash_args_to_kwargs$206=function(node){var $a,self=this,$case=nil,name=nil,var_name=nil,name_loc=nil;return $case=node.$type(),"cvar"["$==="]($case)?node.$updated("cvasgn"):"ivar"["$==="]($case)?node.$updated("ivasgn"):"gvar"["$==="]($case)?node.$updated("gvasgn"):"const"["$==="]($case)?($truthy(self.parser.$context().$in_def())&&self.$diagnostic("error","dynamic_const",nil,node.$loc().$expression()),node.$updated("casgn")):"ident"["$==="]($case)?($a=[].concat(Opal.to_a(node)),name=null==$a[0]?nil:$a[0],var_name=node.$children()["$[]"](0).$to_s(),name_loc=node.$loc().$expression(),self.$check_assignment_to_numparam(var_name,name_loc),self.$check_reserved_for_numparam(var_name,name_loc),self.parser.$static_env().$declare(name),node.$updated("lvasgn")):"match_var"["$==="]($case)?($a=[].concat(Opal.to_a(node)),name=null==$a[0]?nil:$a[0],var_name=node.$children()["$[]"](0).$to_s(),name_loc=node.$loc().$expression(),self.$check_assignment_to_numparam(var_name,name_loc),self.$check_reserved_for_numparam(var_name,name_loc),node):"nil"["$==="]($case)||"self"["$==="]($case)||"true"["$==="]($case)||"false"["$==="]($case)||"__FILE__"["$==="]($case)||"__LINE__"["$==="]($case)||"__ENCODING__"["$==="]($case)?self.$diagnostic("error","invalid_assignment",nil,node.$loc().$expression()):"back_ref"["$==="]($case)||"nth_ref"["$==="]($case)?self.$diagnostic("error","backref_assignment",nil,node.$loc().$expression()):nil},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$const_op_assignable",$Default_rewrite_hash_args_to_kwargs$206=function(node){return node.$updated("casgn")},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$assign",$Default_rewrite_hash_args_to_kwargs$206=function(lhs,eql_t,rhs){return lhs["$<<"](rhs).$updated(nil,nil,$hash2(["location"],{location:lhs.$loc().$with_operator(this.$loc(eql_t)).$with_expression(this.$join_exprs(lhs,rhs))}))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$op_assign",$Default_rewrite_hash_args_to_kwargs$206=function(lhs,op_t,rhs){var self=this,$case=nil,operator=nil,source_map=nil;return $case=lhs.$type(),"gvasgn"["$==="]($case)||"ivasgn"["$==="]($case)||"lvasgn"["$==="]($case)||"cvasgn"["$==="]($case)||"casgn"["$==="]($case)||"send"["$==="]($case)||"csend"["$==="]($case)||"index"["$==="]($case)?(operator=self.$value(op_t)["$[]"]($range(0,-1,!1)).$to_sym(),source_map=lhs.$loc().$with_operator(self.$loc(op_t)).$with_expression(self.$join_exprs(lhs,rhs)),lhs.$type()["$=="]("index")&&(lhs=lhs.$updated("indexasgn")),"&&"["$==="]($case=operator)?self.$n("and_asgn",[lhs,rhs],source_map):"||"["$==="]($case)?self.$n("or_asgn",[lhs,rhs],source_map):self.$n("op_asgn",[lhs,operator,rhs],source_map)):"back_ref"["$==="]($case)||"nth_ref"["$==="]($case)?self.$diagnostic("error","backref_assignment",nil,lhs.$loc().$expression()):nil},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$multi_lhs",$Default_rewrite_hash_args_to_kwargs$206=function(begin_t,items,end_t){return this.$n("mlhs",[].concat(Opal.to_a(items)),this.$collection_map(begin_t,items,end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$multi_assign",$Default_rewrite_hash_args_to_kwargs$206=function(lhs,eql_t,rhs){return this.$n("masgn",[lhs,rhs],this.$binary_op_map(lhs,eql_t,rhs))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$def_class",$Default_rewrite_hash_args_to_kwargs$206=function(class_t,name,lt_t,superclass,body,end_t){return this.$n("class",[name,superclass,body],this.$module_definition_map(class_t,name,lt_t,end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=6),Opal.def($Default_kwargs$ques$207,"$def_sclass",$Default_rewrite_hash_args_to_kwargs$206=function(class_t,lshft_t,expr,body,end_t){return this.$n("sclass",[expr,body],this.$module_definition_map(class_t,nil,lshft_t,end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=5),Opal.def($Default_kwargs$ques$207,"$def_module",$Default_rewrite_hash_args_to_kwargs$206=function(module_t,name,body,end_t){return this.$n("module",[name,body],this.$module_definition_map(module_t,name,nil,end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=4),Opal.def($Default_kwargs$ques$207,"$def_method",$Default_rewrite_hash_args_to_kwargs$206=function(def_t,name_t,args,body,end_t){return this.$check_reserved_for_numparam(this.$value(name_t),this.$loc(name_t)),this.$n("def",[this.$value(name_t).$to_sym(),args,body],this.$definition_map(def_t,nil,name_t,end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=5),Opal.def($Default_kwargs$ques$207,"$def_endless_method",$Default_rewrite_hash_args_to_kwargs$206=function(def_t,name_t,args,assignment_t,body){return this.$check_reserved_for_numparam(this.$value(name_t),this.$loc(name_t)),this.$n("def",[this.$value(name_t).$to_sym(),args,body],this.$endless_definition_map(def_t,nil,name_t,assignment_t,body))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=5),Opal.def($Default_kwargs$ques$207,"$def_singleton",$Default_rewrite_hash_args_to_kwargs$206=function(def_t,definee,dot_t,name_t,args,body,end_t){return this.$validate_definee(definee),this.$check_reserved_for_numparam(this.$value(name_t),this.$loc(name_t)),this.$n("defs",[definee,this.$value(name_t).$to_sym(),args,body],this.$definition_map(def_t,dot_t,name_t,end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=7),Opal.def($Default_kwargs$ques$207,"$def_endless_singleton",$Default_rewrite_hash_args_to_kwargs$206=function(def_t,definee,dot_t,name_t,args,assignment_t,body){return this.$validate_definee(definee),this.$check_reserved_for_numparam(this.$value(name_t),this.$loc(name_t)),this.$n("defs",[definee,this.$value(name_t).$to_sym(),args,body],this.$endless_definition_map(def_t,dot_t,name_t,assignment_t,body))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=7),Opal.def($Default_kwargs$ques$207,"$undef_method",$Default_rewrite_hash_args_to_kwargs$206=function(undef_t,names){return this.$n("undef",[].concat(Opal.to_a(names)),this.$keyword_map(undef_t,nil,names,nil))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$alias",$Default_rewrite_hash_args_to_kwargs$206=function(alias_t,to,from){return this.$n("alias",[to,from],this.$keyword_map(alias_t,nil,[to,from],nil))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$args",$Default_rewrite_hash_args_to_kwargs$206=function(begin_t,args,end_t,check_args){var map,self=this,$ret_or_5=nil,$ret_or_6=nil;return null==check_args&&(check_args=!0),$truthy(check_args)&&(args=self.$check_duplicate_args(args)),self.$validate_no_forward_arg_after_restarg(args),map=self.$collection_map(begin_t,args,end_t),$truthy($truthy($ret_or_5=$truthy($ret_or_6=self.$class().$emit_forward_arg()["$!"]())?args.$length()["$=="](1):$ret_or_6)?args["$[]"](0).$type()["$=="]("forward_arg"):$ret_or_5)?self.$n("forward_args",[],map):self.$n("args",args,map)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=-4),Opal.def($Default_kwargs$ques$207,"$numargs",$Default_rewrite_hash_args_to_kwargs$206=function(max_numparam){return this.$n("numargs",[max_numparam],nil)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$forward_only_args",$Default_rewrite_hash_args_to_kwargs$206=function(begin_t,dots_t,end_t){var arg;return $truthy(this.$class().$emit_forward_arg())?(arg=this.$forward_arg(dots_t),this.$n("args",[arg],this.$collection_map(begin_t,[arg],end_t))):this.$n("forward_args",[],this.$collection_map(begin_t,this.$token_map(dots_t),end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$forward_arg",$Default_rewrite_hash_args_to_kwargs$206=function(dots_t){return this.$n("forward_arg",[],this.$token_map(dots_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$arg",$Default_rewrite_hash_args_to_kwargs$206=function(name_t){return this.$check_reserved_for_numparam(this.$value(name_t),this.$loc(name_t)),this.$n("arg",[this.$value(name_t).$to_sym()],this.$variable_map(name_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$optarg",$Default_rewrite_hash_args_to_kwargs$206=function(name_t,eql_t,value){return this.$check_reserved_for_numparam(this.$value(name_t),this.$loc(name_t)),this.$n("optarg",[this.$value(name_t).$to_sym(),value],this.$variable_map(name_t).$with_operator(this.$loc(eql_t)).$with_expression(this.$loc(name_t).$join(value.$loc().$expression())))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$restarg",$Default_rewrite_hash_args_to_kwargs$206=function(star_t,name_t){return null==name_t&&(name_t=nil),$truthy(name_t)?(this.$check_reserved_for_numparam(this.$value(name_t),this.$loc(name_t)),this.$n("restarg",[this.$value(name_t).$to_sym()],this.$arg_prefix_map(star_t,name_t))):this.$n0("restarg",this.$arg_prefix_map(star_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=-2),Opal.def($Default_kwargs$ques$207,"$kwarg",$Default_rewrite_hash_args_to_kwargs$206=function(name_t){return this.$check_reserved_for_numparam(this.$value(name_t),this.$loc(name_t)),this.$n("kwarg",[this.$value(name_t).$to_sym()],this.$kwarg_map(name_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$kwoptarg",$Default_rewrite_hash_args_to_kwargs$206=function(name_t,value){return this.$check_reserved_for_numparam(this.$value(name_t),this.$loc(name_t)),this.$n("kwoptarg",[this.$value(name_t).$to_sym(),value],this.$kwarg_map(name_t,value))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$kwrestarg",$Default_rewrite_hash_args_to_kwargs$206=function(dstar_t,name_t){return null==name_t&&(name_t=nil),$truthy(name_t)?(this.$check_reserved_for_numparam(this.$value(name_t),this.$loc(name_t)),this.$n("kwrestarg",[this.$value(name_t).$to_sym()],this.$arg_prefix_map(dstar_t,name_t))):this.$n0("kwrestarg",this.$arg_prefix_map(dstar_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=-2),Opal.def($Default_kwargs$ques$207,"$kwnilarg",$Default_rewrite_hash_args_to_kwargs$206=function(dstar_t,nil_t){return this.$n0("kwnilarg",this.$arg_prefix_map(dstar_t,nil_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$shadowarg",$Default_rewrite_hash_args_to_kwargs$206=function(name_t){return this.$check_reserved_for_numparam(this.$value(name_t),this.$loc(name_t)),this.$n("shadowarg",[this.$value(name_t).$to_sym()],this.$variable_map(name_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$blockarg",$Default_rewrite_hash_args_to_kwargs$206=function(amper_t,name_t){var arg_name,self=this;return $truthy(name_t["$nil?"]()["$!"]())&&self.$check_reserved_for_numparam(self.$value(name_t),self.$loc(name_t)),arg_name=$truthy(name_t)?self.$value(name_t).$to_sym():nil,self.$n("blockarg",[arg_name],self.$arg_prefix_map(amper_t,name_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$procarg0",$Default_rewrite_hash_args_to_kwargs$206=function(arg){var self=this,$ret_or_7=nil;return $truthy(self.$class().$emit_procarg0())?$truthy($truthy($ret_or_7=arg.$type()["$=="]("arg"))?self.$class().$emit_arg_inside_procarg0():$ret_or_7)?self.$n("procarg0",[arg],$$$($$$($$($nesting,"Source"),"Map"),"Collection").$new(nil,nil,arg.$location().$expression())):arg.$updated("procarg0"):arg},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$arg_expr",$Default_rewrite_hash_args_to_kwargs$206=function(expr){return expr.$type()["$=="]("lvasgn")?expr.$updated("arg"):this.$n("arg_expr",[expr],expr.$loc().$dup())},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$restarg_expr",$Default_rewrite_hash_args_to_kwargs$206=function(star_t,expr){return null==expr&&(expr=nil),$truthy(expr["$nil?"]())?this.$n0("restarg",this.$token_map(star_t)):expr.$type()["$=="]("lvasgn")?expr.$updated("restarg"):this.$n("restarg_expr",[expr],expr.$loc().$dup())},$Default_rewrite_hash_args_to_kwargs$206.$$arity=-2),Opal.def($Default_kwargs$ques$207,"$blockarg_expr",$Default_rewrite_hash_args_to_kwargs$206=function(amper_t,expr){return expr.$type()["$=="]("lvasgn")?expr.$updated("blockarg"):this.$n("blockarg_expr",[expr],expr.$loc().$dup())},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$objc_kwarg",$Default_rewrite_hash_args_to_kwargs$206=function(kwname_t,assoc_t,name_t){var kwname_l=nil,operator_l=nil,kwname_l=this.$loc(kwname_t),operator_l=$truthy(assoc_t["$nil?"]())?(kwname_l=kwname_l.$resize($rb_minus(kwname_l.$size(),1))).$end().$resize(1):this.$loc(assoc_t);return this.$n("objc_kwarg",[this.$value(kwname_t).$to_sym(),this.$value(name_t).$to_sym()],$$$($$$($$($nesting,"Source"),"Map"),"ObjcKwarg").$new(kwname_l,operator_l,this.$loc(name_t),kwname_l.$join(this.$loc(name_t))))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$objc_restarg",$Default_rewrite_hash_args_to_kwargs$206=function(star_t,name){return null==name&&(name=nil),$truthy(name["$nil?"]())?this.$n0("restarg",this.$arg_prefix_map(star_t)):name.$type()["$=="]("arg")?name.$updated("restarg",nil,$hash2(["location"],{location:name.$loc().$with_operator(this.$loc(star_t))})):this.$n("objc_restarg",[name],this.$unary_op_map(star_t,name))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=-2),Opal.def($Default_kwargs$ques$207,"$call_type_for_dot",$Default_rewrite_hash_args_to_kwargs$206=function(dot_t){var self=this,$ret_or_8=nil;return $truthy($truthy($ret_or_8=dot_t["$nil?"]()["$!"]())?self.$value(dot_t)["$=="]("anddot"):$ret_or_8)?"csend":"send"},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$forwarded_args",$Default_rewrite_hash_args_to_kwargs$206=function(dots_t){return this.$n("forwarded_args",[],this.$token_map(dots_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$call_method",$Default_rewrite_hash_args_to_kwargs$206=function(receiver,dot_t,selector_t,lparen_t,args,rparen_t){var type;return null==lparen_t&&(lparen_t=nil),null==args&&(args=[]),null==rparen_t&&(rparen_t=nil),type=this.$call_type_for_dot(dot_t),$truthy(this.$class().$emit_kwargs())&&this.$rewrite_hash_args_to_kwargs(args),$truthy(selector_t["$nil?"]())?this.$n(type,[receiver,"call"].concat(Opal.to_a(args)),this.$send_map(receiver,dot_t,nil,lparen_t,args,rparen_t)):this.$n(type,[receiver,this.$value(selector_t).$to_sym()].concat(Opal.to_a(args)),this.$send_map(receiver,dot_t,selector_t,lparen_t,args,rparen_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=-4),Opal.def($Default_kwargs$ques$207,"$call_lambda",$Default_rewrite_hash_args_to_kwargs$206=function(lambda_t){return $truthy(this.$class().$emit_lambda())?this.$n0("lambda",this.$expr_map(this.$loc(lambda_t))):this.$n("send",[nil,"lambda"],this.$send_map(nil,nil,lambda_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$block",$Default_rewrite_hash_args_to_kwargs$206=function(method_call,begin_t,args,body,end_t){var block,call_args=nil,last_arg=nil,$ret_or_9=nil,$ret_or_10=nil,block_type=nil,actual_send=nil,$a=[].concat(Opal.to_a(method_call)),call_args=(null==$a[0]||$a[0],null==$a[1]||$a[1],$slice.call($a,2));return method_call.$type()["$=="]("yield")&&this.$diagnostic("error","block_given_to_yield",nil,method_call.$loc().$keyword(),[this.$loc(begin_t)]),last_arg=call_args.$last(),$truthy($truthy($ret_or_9=last_arg)?$truthy($ret_or_10=last_arg.$type()["$=="]("block_pass"))?$ret_or_10:last_arg.$type()["$=="]("forwarded_args"):$ret_or_9)&&this.$diagnostic("error","block_and_blockarg",nil,last_arg.$loc().$expression(),[this.$loc(begin_t)]),args.$type()["$=="]("numargs")?(block_type="numblock",args=args.$children()["$[]"](0)):block_type="block",$truthy(["send","csend","index","super","zsuper","lambda"]["$include?"](method_call.$type()))?this.$n(block_type,[method_call,args,body],this.$block_map(method_call.$loc().$expression(),begin_t,end_t)):(actual_send=null==($a=[].concat(Opal.to_a(method_call)))[0]?nil:$a[0],block=this.$n(block_type,[actual_send,args,body],this.$block_map(actual_send.$loc().$expression(),begin_t,end_t)),this.$n(method_call.$type(),[block],method_call.$loc().$with_expression(this.$join_exprs(method_call,block))))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=5),Opal.def($Default_kwargs$ques$207,"$block_pass",$Default_rewrite_hash_args_to_kwargs$206=function(amper_t,arg){return this.$n("block_pass",[arg],this.$unary_op_map(amper_t,arg))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$objc_varargs",$Default_rewrite_hash_args_to_kwargs$206=function(pair,rest_of_varargs){var first_vararg=nil,vararg_array=nil,$a=[].concat(Opal.to_a(pair)),value=null==$a[0]?nil:$a[0],first_vararg=null==$a[1]?nil:$a[1],vararg_array=this.$array(nil,[first_vararg].concat(Opal.to_a(rest_of_varargs)),nil).$updated("objc_varargs");return pair.$updated(nil,[value,vararg_array],$hash2(["location"],{location:pair.$loc().$with_expression(pair.$loc().$expression().$join(vararg_array.$loc().$expression()))}))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$attr_asgn",$Default_rewrite_hash_args_to_kwargs$206=function(receiver,dot_t,selector_t){var method_name=$rb_plus(this.$value(selector_t),"=").$to_sym(),type=this.$call_type_for_dot(dot_t);return this.$n(type,[receiver,method_name],this.$send_map(receiver,dot_t,selector_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$index",$Default_rewrite_hash_args_to_kwargs$206=function(receiver,lbrack_t,indexes,rbrack_t){return $truthy(this.$class().$emit_kwargs())&&this.$rewrite_hash_args_to_kwargs(indexes),$truthy(this.$class().$emit_index())?this.$n("index",[receiver].concat(Opal.to_a(indexes)),this.$index_map(receiver,lbrack_t,rbrack_t)):this.$n("send",[receiver,"[]"].concat(Opal.to_a(indexes)),this.$send_index_map(receiver,lbrack_t,rbrack_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=4),Opal.def($Default_kwargs$ques$207,"$index_asgn",$Default_rewrite_hash_args_to_kwargs$206=function(receiver,lbrack_t,indexes,rbrack_t){return $truthy(this.$class().$emit_index())?this.$n("indexasgn",[receiver].concat(Opal.to_a(indexes)),this.$index_map(receiver,lbrack_t,rbrack_t)):this.$n("send",[receiver,"[]="].concat(Opal.to_a(indexes)),this.$send_index_map(receiver,lbrack_t,rbrack_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=4),Opal.def($Default_kwargs$ques$207,"$binary_op",$Default_rewrite_hash_args_to_kwargs$206=function(receiver,operator_t,arg){var source_map=nil,operator=nil,method_call=nil,source_map=this.$send_binary_op_map(receiver,operator_t,arg);return this.parser.$version()["$=="](18)&&((operator=this.$value(operator_t))["$=="]("!=")?method_call=this.$n("send",[receiver,"==",arg],source_map):operator["$=="]("!~")&&(method_call=this.$n("send",[receiver,"=~",arg],source_map)),$truthy(["!=","!~"]["$include?"](operator)))?this.$n("not",[method_call],this.$expr_map(source_map.$expression())):this.$n("send",[receiver,this.$value(operator_t).$to_sym(),arg],source_map)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$match_op",$Default_rewrite_hash_args_to_kwargs$206=function(receiver,match_t,arg){var $$103,regexp=nil,source_map=this.$send_binary_op_map(receiver,match_t,arg);return $truthy(regexp=this.$static_regexp_node(receiver))?($send(regexp.$names(),"each",[],(($$103=function(name){var self=null==$$103.$$s?this:$$103.$$s;return null==self.parser&&(self.parser=nil),null==name&&(name=nil),self.parser.$static_env().$declare(name)}).$$s=this,$$103.$$arity=1,$$103)),this.$n("match_with_lvasgn",[receiver,arg],source_map)):this.$n("send",[receiver,"=~",arg],source_map)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$unary_op",$Default_rewrite_hash_args_to_kwargs$206=function(op_t,receiver){var method=nil,$case=this.$value(op_t),method="+"["$==="]($case)||"-"["$==="]($case)?$rb_plus(this.$value(op_t),"@"):this.$value(op_t);return this.$n("send",[receiver,method.$to_sym()],this.$send_unary_op_map(op_t,receiver))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$not_op",$Default_rewrite_hash_args_to_kwargs$206=function(not_t,begin_t,receiver,end_t){var nil_node;return null==begin_t&&(begin_t=nil),null==receiver&&(receiver=nil),null==end_t&&(end_t=nil),this.parser.$version()["$=="](18)?this.$n("not",[this.$check_condition(receiver)],this.$unary_op_map(not_t,receiver)):$truthy(receiver["$nil?"]())?(nil_node=this.$n0("begin",this.$collection_map(begin_t,nil,end_t)),this.$n("send",[nil_node,"!"],this.$send_unary_op_map(not_t,nil_node))):this.$n("send",[this.$check_condition(receiver),"!"],this.$send_map(nil,nil,not_t,begin_t,[receiver],end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=-2),Opal.def($Default_kwargs$ques$207,"$logical_op",$Default_rewrite_hash_args_to_kwargs$206=function(type,lhs,op_t,rhs){return this.$n(type,[lhs,rhs],this.$binary_op_map(lhs,op_t,rhs))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=4),Opal.def($Default_kwargs$ques$207,"$condition",$Default_rewrite_hash_args_to_kwargs$206=function(cond_t,cond,then_t,if_true,else_t,if_false,end_t){return this.$n("if",[this.$check_condition(cond),if_true,if_false],this.$condition_map(cond_t,cond,then_t,if_true,else_t,if_false,end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=7),Opal.def($Default_kwargs$ques$207,"$condition_mod",$Default_rewrite_hash_args_to_kwargs$206=function(if_true,if_false,cond_t,cond){var $ret_or_11=nil;return this.$n("if",[this.$check_condition(cond),if_true,if_false],this.$keyword_mod_map($truthy($ret_or_11=if_true)?$ret_or_11:if_false,cond_t,cond))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=4),Opal.def($Default_kwargs$ques$207,"$ternary",$Default_rewrite_hash_args_to_kwargs$206=function(cond,question_t,if_true,colon_t,if_false){return this.$n("if",[this.$check_condition(cond),if_true,if_false],this.$ternary_map(cond,question_t,if_true,colon_t,if_false))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=5),Opal.def($Default_kwargs$ques$207,"$when",$Default_rewrite_hash_args_to_kwargs$206=function(when_t,patterns,then_t,body){var children=patterns["$<<"](body);return this.$n("when",children,this.$keyword_map(when_t,then_t,children,nil))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=4),Opal.def($Default_kwargs$ques$207,"$case",$Default_rewrite_hash_args_to_kwargs$206=function(case_t,expr,when_bodies,else_t,else_body,end_t){return this.$n("case",[expr].concat(Opal.to_a(when_bodies["$<<"](else_body))),this.$condition_map(case_t,expr,nil,nil,else_t,else_body,end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=6),Opal.def($Default_kwargs$ques$207,"$loop",$Default_rewrite_hash_args_to_kwargs$206=function(type,keyword_t,cond,do_t,body,end_t){return this.$n(type,[this.$check_condition(cond),body],this.$keyword_map(keyword_t,do_t,nil,end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=6),Opal.def($Default_kwargs$ques$207,"$loop_mod",$Default_rewrite_hash_args_to_kwargs$206=function(type,body,keyword_t,cond){return body.$type()["$=="]("kwbegin")&&(type+="_post"),this.$n(type,[this.$check_condition(cond),body],this.$keyword_mod_map(body,keyword_t,cond))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=4),Opal.def($Default_kwargs$ques$207,"$for",$Default_rewrite_hash_args_to_kwargs$206=function(for_t,iterator,in_t,iteratee,do_t,body,end_t){return this.$n("for",[iterator,iteratee,body],this.$for_map(for_t,in_t,do_t,end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=7),Opal.def($Default_kwargs$ques$207,"$keyword_cmd",$Default_rewrite_hash_args_to_kwargs$206=function(type,keyword_t,lparen_t,args,rparen_t){var self=this,$ret_or_12=nil,last_arg=nil,$ret_or_13=nil;return null==lparen_t&&(lparen_t=nil),null==args&&(args=[]),null==rparen_t&&(rparen_t=nil),$truthy($truthy($ret_or_12=type["$=="]("yield"))?$rb_gt(args.$count(),0):$ret_or_12)&&(last_arg=args.$last()).$type()["$=="]("block_pass")&&self.$diagnostic("error","block_given_to_yield",nil,self.$loc(keyword_t),[last_arg.$loc().$expression()]),$truthy($truthy($ret_or_13=["yield","super"]["$include?"](type))?self.$class().$emit_kwargs():$ret_or_13)&&self.$rewrite_hash_args_to_kwargs(args),self.$n(type,args,self.$keyword_map(keyword_t,lparen_t,args,rparen_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=-3),Opal.def($Default_kwargs$ques$207,"$preexe",$Default_rewrite_hash_args_to_kwargs$206=function(preexe_t,lbrace_t,compstmt,rbrace_t){return this.$n("preexe",[compstmt],this.$keyword_map(preexe_t,lbrace_t,[],rbrace_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=4),Opal.def($Default_kwargs$ques$207,"$postexe",$Default_rewrite_hash_args_to_kwargs$206=function(postexe_t,lbrace_t,compstmt,rbrace_t){return this.$n("postexe",[compstmt],this.$keyword_map(postexe_t,lbrace_t,[],rbrace_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=4),Opal.def($Default_kwargs$ques$207,"$rescue_body",$Default_rewrite_hash_args_to_kwargs$206=function(rescue_t,exc_list,assoc_t,exc_var,then_t,compound_stmt){return this.$n("resbody",[exc_list,exc_var,compound_stmt],this.$rescue_body_map(rescue_t,exc_list,assoc_t,exc_var,then_t,compound_stmt))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=6),Opal.def($Default_kwargs$ques$207,"$begin_body",$Default_rewrite_hash_args_to_kwargs$206=function(compound_stmt,rescue_bodies,else_t,else_,ensure_t,ensure_){var statements=nil;return null==rescue_bodies&&(rescue_bodies=[]),null==else_t&&(else_t=nil),null==else_&&(else_=nil),null==ensure_t&&(ensure_t=nil),null==ensure_&&(ensure_=nil),$truthy(rescue_bodies["$any?"]())?compound_stmt=$truthy(else_t)?this.$n("rescue",[compound_stmt].concat(Opal.to_a($rb_plus(rescue_bodies,[else_]))),this.$eh_keyword_map(compound_stmt,nil,rescue_bodies,else_t,else_)):this.$n("rescue",[compound_stmt].concat(Opal.to_a($rb_plus(rescue_bodies,[nil]))),this.$eh_keyword_map(compound_stmt,nil,rescue_bodies,nil,nil)):$truthy(else_t)&&(statements=[],$truthy(compound_stmt["$nil?"]()["$!"]())&&(compound_stmt.$type()["$=="]("begin")?statements=$rb_plus(statements,compound_stmt.$children()):statements.$push(compound_stmt)),statements.$push(this.$n("begin",[else_],this.$collection_map(else_t,[else_],nil))),compound_stmt=this.$n("begin",statements,this.$collection_map(nil,statements,nil))),$truthy(ensure_t)&&(compound_stmt=this.$n("ensure",[compound_stmt,ensure_],this.$eh_keyword_map(compound_stmt,ensure_t,[ensure_],nil,nil))),compound_stmt},$Default_rewrite_hash_args_to_kwargs$206.$$arity=-2),Opal.def($Default_kwargs$ques$207,"$compstmt",$Default_rewrite_hash_args_to_kwargs$206=function(statements){var self=this;return $truthy(statements["$none?"]())?nil:$truthy(statements["$one?"]())?statements.$first():self.$n("begin",statements,self.$collection_map(nil,statements,nil))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$begin",$Default_rewrite_hash_args_to_kwargs$206=function(begin_t,body,end_t){var $ret_or_14=nil,$ret_or_15=nil,$ret_or_16=nil;return $truthy(body["$nil?"]())?this.$n0("begin",this.$collection_map(begin_t,nil,end_t)):$truthy($truthy($ret_or_14=body.$type()["$=="]("mlhs"))?$ret_or_14:$truthy($ret_or_15=$truthy($ret_or_16=body.$type()["$=="]("begin"))?body.$loc().$begin()["$nil?"]():$ret_or_16)?body.$loc().$end()["$nil?"]():$ret_or_15)?this.$n(body.$type(),body.$children(),this.$collection_map(begin_t,body.$children(),end_t)):this.$n("begin",[body],this.$collection_map(begin_t,[body],end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$begin_keyword",$Default_rewrite_hash_args_to_kwargs$206=function(begin_t,body,end_t){var $ret_or_17=nil,$ret_or_18=nil;return $truthy(body["$nil?"]())?this.$n0("kwbegin",this.$collection_map(begin_t,nil,end_t)):$truthy($truthy($ret_or_17=$truthy($ret_or_18=body.$type()["$=="]("begin"))?body.$loc().$begin()["$nil?"]():$ret_or_18)?body.$loc().$end()["$nil?"]():$ret_or_17)?this.$n("kwbegin",body.$children(),this.$collection_map(begin_t,body.$children(),end_t)):this.$n("kwbegin",[body],this.$collection_map(begin_t,[body],end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$case_match",$Default_rewrite_hash_args_to_kwargs$206=function(case_t,expr,in_bodies,else_t,else_body,end_t){var $ret_or_19=nil;return $truthy($truthy($ret_or_19=else_t)?else_body["$!"]():$ret_or_19)&&(else_body=this.$n("empty_else",nil,this.$token_map(else_t))),this.$n("case_match",[expr].concat(Opal.to_a(in_bodies["$<<"](else_body))),this.$condition_map(case_t,expr,nil,nil,else_t,else_body,end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=6),Opal.def($Default_kwargs$ques$207,"$in_match",$Default_rewrite_hash_args_to_kwargs$206=function(lhs,in_t,rhs){return this.$n("in_match",[lhs,rhs],this.$binary_op_map(lhs,in_t,rhs))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$match_pattern",$Default_rewrite_hash_args_to_kwargs$206=function(lhs,match_t,rhs){return this.$n("match_pattern",[lhs,rhs],this.$binary_op_map(lhs,match_t,rhs))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$match_pattern_p",$Default_rewrite_hash_args_to_kwargs$206=function(lhs,match_t,rhs){return this.$n("match_pattern_p",[lhs,rhs],this.$binary_op_map(lhs,match_t,rhs))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$in_pattern",$Default_rewrite_hash_args_to_kwargs$206=function(in_t,pattern,guard,then_t,body){var children=nil,children=[pattern,guard,body];return this.$n("in_pattern",children,this.$keyword_map(in_t,then_t,children.$compact(),nil))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=5),Opal.def($Default_kwargs$ques$207,"$if_guard",$Default_rewrite_hash_args_to_kwargs$206=function(if_t,if_body){return this.$n("if_guard",[if_body],this.$guard_map(if_t,if_body))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$unless_guard",$Default_rewrite_hash_args_to_kwargs$206=function(unless_t,unless_body){return this.$n("unless_guard",[unless_body],this.$guard_map(unless_t,unless_body))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$match_var",$Default_rewrite_hash_args_to_kwargs$206=function(name_t){var name=this.$value(name_t).$to_sym(),name_l=this.$loc(name_t);return this.$check_lvar_name(name,name_l),this.$check_duplicate_pattern_variable(name,name_l),this.parser.$static_env().$declare(name),this.$n("match_var",[name],this.$variable_map(name_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$match_hash_var",$Default_rewrite_hash_args_to_kwargs$206=function(name_t){var expr_l=nil,name=this.$value(name_t).$to_sym(),name_l=(expr_l=this.$loc(name_t)).$adjust($hash2(["end_pos"],{end_pos:-1}));return this.$check_lvar_name(name,name_l),this.$check_duplicate_pattern_variable(name,name_l),this.parser.$static_env().$declare(name),this.$n("match_var",[name],$$$($$$($$($nesting,"Source"),"Map"),"Variable").$new(name_l,expr_l))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$match_hash_var_from_str",$Default_rewrite_hash_args_to_kwargs$206=function(begin_t,$a,end_t){var self=this,string=nil,$case=nil,name=nil,name_l=nil,begin_l=nil,end_l=nil,expr_l=nil;return $truthy($rb_gt($a.$length(),1))&&self.$diagnostic("error","pm_interp_in_var_name",nil,self.$loc(begin_t).$join(self.$loc(end_t))),string=$a["$[]"](0),$case=string.$type(),"str"["$==="]($case)?($a=[].concat(Opal.to_a(string)),name=null==$a[0]?nil:$a[0],name_l=string.$loc().$expression(),self.$check_lvar_name(name,name_l),self.$check_duplicate_pattern_variable(name,name_l),self.parser.$static_env().$declare(name),$truthy(begin_l=string.$loc().$begin())&&(name_l=name_l.$adjust($hash2(["begin_pos"],{begin_pos:begin_l.$length()}))),$truthy(end_l=string.$loc().$end())&&(name_l=name_l.$adjust($hash2(["end_pos"],{end_pos:end_l.$length()["$-@"]()}))),expr_l=self.$loc(begin_t).$join(string.$loc().$expression()).$join(self.$loc(end_t)),self.$n("match_var",[name.$to_sym()],$$$($$$($$($nesting,"Source"),"Map"),"Variable").$new(name_l,expr_l))):"begin"["$==="]($case)?self.$match_hash_var_from_str(begin_t,string.$children(),end_t):self.$diagnostic("error","pm_interp_in_var_name",nil,self.$loc(begin_t).$join(self.$loc(end_t)))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$match_rest",$Default_rewrite_hash_args_to_kwargs$206=function(star_t,name_t){var name;return null==name_t&&(name_t=nil),$truthy(name_t["$nil?"]())?this.$n0("match_rest",this.$unary_op_map(star_t)):(name=this.$match_var(name_t),this.$n("match_rest",[name],this.$unary_op_map(star_t,name)))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=-2),Opal.def($Default_kwargs$ques$207,"$hash_pattern",$Default_rewrite_hash_args_to_kwargs$206=function(lbrace_t,kwargs,rbrace_t){var args=this.$check_duplicate_args(kwargs);return this.$n("hash_pattern",args,this.$collection_map(lbrace_t,args,rbrace_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$array_pattern",$Default_rewrite_hash_args_to_kwargs$206=function(lbrack_t,elements,rbrack_t){var $$136,node_elements,node_type,trailing_comma=nil;return $truthy(elements["$nil?"]())?this.$n("array_pattern",nil,this.$collection_map(lbrack_t,[],rbrack_t)):(trailing_comma=!1,node_elements=$send(elements,"map",[],(($$136=function(element){null==$$136.$$s||$$136.$$s;return null==element&&(element=nil),element.$type()["$=="]("match_with_trailing_comma")?(trailing_comma=!0,element.$children().$first()):(trailing_comma=!1,element)}).$$s=this,$$136.$$arity=1,$$136)),node_type=$truthy(trailing_comma)?"array_pattern_with_tail":"array_pattern",this.$n(node_type,node_elements,this.$collection_map(lbrack_t,elements,rbrack_t)))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$find_pattern",$Default_rewrite_hash_args_to_kwargs$206=function(lbrack_t,elements,rbrack_t){return this.$n("find_pattern",elements,this.$collection_map(lbrack_t,elements,rbrack_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$match_with_trailing_comma",$Default_rewrite_hash_args_to_kwargs$206=function(match,comma_t){return this.$n("match_with_trailing_comma",[match],this.$expr_map(match.$loc().$expression().$join(this.$loc(comma_t))))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$const_pattern",$Default_rewrite_hash_args_to_kwargs$206=function(const$,ldelim_t,pattern,rdelim_t){return this.$n("const_pattern",[const$,pattern],$$$($$$($$($nesting,"Source"),"Map"),"Collection").$new(this.$loc(ldelim_t),this.$loc(rdelim_t),const$.$loc().$expression().$join(this.$loc(rdelim_t))))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=4),Opal.def($Default_kwargs$ques$207,"$pin",$Default_rewrite_hash_args_to_kwargs$206=function(pin_t,var$){return this.$n("pin",[var$],this.$send_unary_op_map(pin_t,var$))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$match_alt",$Default_rewrite_hash_args_to_kwargs$206=function(left,pipe_t,right){var source_map=this.$binary_op_map(left,pipe_t,right);return this.$n("match_alt",[left,right],source_map)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$match_as",$Default_rewrite_hash_args_to_kwargs$206=function(value,assoc_t,as){var source_map=this.$binary_op_map(value,assoc_t,as);return this.$n("match_as",[value,as],source_map)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$match_nil_pattern",$Default_rewrite_hash_args_to_kwargs$206=function(dstar_t,nil_t){return this.$n0("match_nil_pattern",this.$arg_prefix_map(dstar_t,nil_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$match_pair",$Default_rewrite_hash_args_to_kwargs$206=function(label_type,$a,value){var begin_t,parts,end_t,label_loc,var_name;return label_type["$=="]("label")?(this.$check_duplicate_pattern_key($a["$[]"](0),$a["$[]"](1)),this.$pair_keyword($a,value)):($a=$a,begin_t=null==($a=Opal.to_ary($a))[0]?nil:$a[0],parts=null==$a[1]?nil:$a[1],end_t=null==$a[2]?nil:$a[2],label_loc=this.$loc(begin_t).$join(this.$loc(end_t)),$truthy(var_name=this.$static_string(parts))?this.$check_duplicate_pattern_key(var_name,label_loc):this.$diagnostic("error","pm_interp_in_var_name",nil,label_loc),this.$pair_quoted(begin_t,parts,end_t,value))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$match_label",$Default_rewrite_hash_args_to_kwargs$206=function(label_type,$a){var begin_t,strings,end_t;return label_type["$=="]("label")?this.$match_hash_var($a):($a=$a,begin_t=null==($a=Opal.to_ary($a))[0]?nil:$a[0],strings=null==$a[1]?nil:$a[1],end_t=null==$a[2]?nil:$a[2],this.$match_hash_var_from_str(begin_t,strings,end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),$Default_kwargs$ques$207.$private(),Opal.def($Default_kwargs$ques$207,"$check_condition",$Default_rewrite_hash_args_to_kwargs$206=function(cond){var $a,lhs,rhs,self=this,$case=nil,type=nil,$ret_or_20=nil;return $case=cond.$type(),"masgn"["$==="]($case)?$truthy(function(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs<=rhs:lhs["$<="](rhs)}(self.parser.$version(),23))?self.$diagnostic("error","masgn_as_condition",nil,cond.$loc().$expression()):cond:"begin"["$==="]($case)?cond.$children().$count()["$=="](1)?cond.$updated(nil,[self.$check_condition(cond.$children().$last())]):cond:"and"["$==="]($case)||"or"["$==="]($case)||"irange"["$==="]($case)||"erange"["$==="]($case)?($a=[].concat(Opal.to_a(cond)),lhs=null==$a[0]?nil:$a[0],rhs=null==$a[1]?nil:$a[1],$case=cond.$type(),type="irange"["$==="]($case)?"iflipflop":"erange"["$==="]($case)?"eflipflop":nil,$truthy($truthy($ret_or_20=["and","or"]["$include?"](cond.$type()))?self.parser.$version()["$=="](18):$ret_or_20)?cond:cond.$updated(type,[self.$check_condition(lhs),self.$check_condition(rhs)])):"regexp"["$==="]($case)?self.$n("match_current_line",[cond],self.$expr_map(cond.$loc().$expression())):cond},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$check_duplicate_args",$Default_rewrite_hash_args_to_kwargs$206=function(args,map){var $$148;return null==map&&(map=$hash2([],{})),$send(args,"each",[],(($$148=function(this_arg){var self=null==$$148.$$s?this:$$148.$$s,$case=nil;return null==this_arg&&(this_arg=nil),$case=this_arg.$type(),"arg"["$==="]($case)||"optarg"["$==="]($case)||"restarg"["$==="]($case)||"blockarg"["$==="]($case)||"kwarg"["$==="]($case)||"kwoptarg"["$==="]($case)||"kwrestarg"["$==="]($case)||"shadowarg"["$==="]($case)?self.$check_duplicate_arg(this_arg,map):"procarg0"["$==="]($case)?$truthy(this_arg.$children()["$[]"](0)["$is_a?"]($$($nesting,"Symbol")))?self.$check_duplicate_arg(this_arg,map):self.$check_duplicate_args(this_arg.$children(),map):"mlhs"["$==="]($case)?self.$check_duplicate_args(this_arg.$children(),map):nil}).$$s=this,$$148.$$arity=1,$$148))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=-2),Opal.def($Default_kwargs$ques$207,"$check_duplicate_arg",$Default_rewrite_hash_args_to_kwargs$206=function(this_arg,map){var $a,this_name,that_name,$writer,that_arg=nil;return null==map&&(map=$hash2([],{})),this_name=null==($a=[].concat(Opal.to_a(this_arg)))[0]?nil:$a[0],that_arg=map["$[]"](this_name),that_name=null==($a=[].concat(Opal.to_a(that_arg)))[0]?nil:$a[0],$truthy(that_arg["$nil?"]())?($writer=[this_name,this_arg],$send(map,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]):$truthy(this["$arg_name_collides?"](this_name,that_name))?this.$diagnostic("error","duplicate_argument",nil,this_arg.$loc().$name(),[that_arg.$loc().$name()]):nil},$Default_rewrite_hash_args_to_kwargs$206.$$arity=-2),Opal.def($Default_kwargs$ques$207,"$validate_no_forward_arg_after_restarg",$Default_rewrite_hash_args_to_kwargs$206=function(args){var $$151,restarg=nil,forward_arg=nil,$ret_or_21=nil,restarg=nil,forward_arg=nil;return $send(args,"each",[],(($$151=function(arg){null==$$151.$$s||$$151.$$s;var $case=nil;return null==arg&&(arg=nil),$case=arg.$type(),"restarg"["$==="]($case)?restarg=arg:"forward_arg"["$==="]($case)?forward_arg=arg:nil}).$$s=this,$$151.$$arity=1,$$151)),$truthy($truthy($ret_or_21=forward_arg["$nil?"]()["$!"]())?restarg["$nil?"]()["$!"]():$ret_or_21)?this.$diagnostic("error","forward_arg_after_restarg",nil,forward_arg.$loc().$expression(),[restarg.$loc().$expression()]):nil},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$check_assignment_to_numparam",$Default_rewrite_hash_args_to_kwargs$206=function(name,loc){var assigning_to_numparam,self=this,$ret_or_22=nil,$ret_or_23=nil;return $truthy($rb_lt(self.parser.$version(),27))?nil:(assigning_to_numparam=$truthy($ret_or_22=$truthy($ret_or_23=self.parser.$context()["$in_dynamic_block?"]())?name["$=~"](/^_([1-9])$/):$ret_or_23)?self.parser.$max_numparam_stack()["$has_numparams?"]():$ret_or_22,$truthy(assigning_to_numparam)?self.$diagnostic("error","cant_assign_to_numparam",$hash2(["name"],{name:name}),loc):nil)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$check_reserved_for_numparam",$Default_rewrite_hash_args_to_kwargs$206=function(name,loc){return!$truthy($rb_lt(this.parser.$version(),30))&&$truthy(name["$=~"](/^_([1-9])$/))?this.$diagnostic("error","reserved_for_numparam",$hash2(["name"],{name:name}),loc):nil},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$arg_name_collides?",$Default_rewrite_hash_args_to_kwargs$206=function(this_name,that_name){var $case=nil,$ret_or_24=nil,$ret_or_25=nil,$ret_or_26=nil;return $case=this.parser.$version(),18["$==="]($case)?this_name["$=="](that_name):19["$==="]($case)?$truthy($ret_or_24=this_name["$!="]("_"))?this_name["$=="](that_name):$ret_or_24:$truthy($ret_or_25=$truthy($ret_or_26=this_name)?this_name["$[]"](0)["$!="]("_"):$ret_or_26)?this_name["$=="](that_name):$ret_or_25},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$check_lvar_name",$Default_rewrite_hash_args_to_kwargs$206=function(name,loc){return $truthy(name["$=~"](/^[[[:lower:]]_][[[:alnum:]]_]*$/))?nil:this.$diagnostic("error","lvar_name",$hash2(["name"],{name:name}),loc)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$check_duplicate_pattern_variable",$Default_rewrite_hash_args_to_kwargs$206=function(name,loc){return $truthy(name.$to_s()["$start_with?"]("_"))?nil:($truthy(this.parser.$pattern_variables()["$declared?"](name))&&this.$diagnostic("error","duplicate_variable_name",$hash2(["name"],{name:name.$to_s()}),loc),this.parser.$pattern_variables().$declare(name))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$check_duplicate_pattern_key",$Default_rewrite_hash_args_to_kwargs$206=function(name,loc){return $truthy(this.parser.$pattern_hash_keys()["$declared?"](name))&&this.$diagnostic("error","duplicate_pattern_key",$hash2(["name"],{name:name.$to_s()}),loc),this.parser.$pattern_hash_keys().$declare(name)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$n",$Default_rewrite_hash_args_to_kwargs$206=function(type,children,source_map){return $$$($$($nesting,"AST"),"Node").$new(type,children,$hash2(["location"],{location:source_map}))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$n0",$Default_rewrite_hash_args_to_kwargs$206=function(type,source_map){return this.$n(type,[],source_map)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$join_exprs",$Default_rewrite_hash_args_to_kwargs$206=function(left_expr,right_expr){return left_expr.$loc().$expression().$join(right_expr.$loc().$expression())},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$token_map",$Default_rewrite_hash_args_to_kwargs$206=function(token){return $$$($$($nesting,"Source"),"Map").$new(this.$loc(token))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$delimited_string_map",$Default_rewrite_hash_args_to_kwargs$206=function(string_t){var str_range=nil,begin_l=(str_range=this.$loc(string_t)).$with($hash2(["end_pos"],{end_pos:$rb_plus(str_range.$begin_pos(),1)})),end_l=str_range.$with($hash2(["begin_pos"],{begin_pos:$rb_minus(str_range.$end_pos(),1)}));return $$$($$$($$($nesting,"Source"),"Map"),"Collection").$new(begin_l,end_l,this.$loc(string_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$prefix_string_map",$Default_rewrite_hash_args_to_kwargs$206=function(symbol){var str_range=nil,begin_l=(str_range=this.$loc(symbol)).$with($hash2(["end_pos"],{end_pos:$rb_plus(str_range.$begin_pos(),1)}));return $$$($$$($$($nesting,"Source"),"Map"),"Collection").$new(begin_l,nil,this.$loc(symbol))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$unquoted_map",$Default_rewrite_hash_args_to_kwargs$206=function(token){return $$$($$$($$($nesting,"Source"),"Map"),"Collection").$new(nil,nil,this.$loc(token))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$pair_keyword_map",$Default_rewrite_hash_args_to_kwargs$206=function(key_t,value_e){var key_range=nil,key_l=(key_range=this.$loc(key_t)).$adjust($hash2(["end_pos"],{end_pos:-1})),colon_l=key_range.$with($hash2(["begin_pos"],{begin_pos:$rb_minus(key_range.$end_pos(),1)}));return[$$$($$$($$($nesting,"Source"),"Map"),"Collection").$new(nil,nil,key_l),$$$($$$($$($nesting,"Source"),"Map"),"Operator").$new(colon_l,key_range.$join(value_e.$loc().$expression()))]},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$pair_quoted_map",$Default_rewrite_hash_args_to_kwargs$206=function(begin_t,end_t,value_e){var end_l=nil,quote_l=(end_l=this.$loc(end_t)).$with($hash2(["begin_pos","end_pos"],{begin_pos:$rb_minus(end_l.$end_pos(),2),end_pos:$rb_minus(end_l.$end_pos(),1)})),colon_l=end_l.$with($hash2(["begin_pos"],{begin_pos:$rb_minus(end_l.$end_pos(),1)}));return[[this.$value(end_t),quote_l],$$$($$$($$($nesting,"Source"),"Map"),"Operator").$new(colon_l,this.$loc(begin_t).$join(value_e.$loc().$expression()))]},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$expr_map",$Default_rewrite_hash_args_to_kwargs$206=function(loc){return $$$($$($nesting,"Source"),"Map").$new(loc)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$collection_map",$Default_rewrite_hash_args_to_kwargs$206=function(begin_t,parts,end_t){var $ret_or_27=nil,expr_l=nil;return $truthy($truthy($ret_or_27=begin_t["$nil?"]())?$ret_or_27:end_t["$nil?"]())?$truthy(parts["$any?"]())?expr_l=this.$join_exprs(parts.$first(),parts.$last()):$truthy(begin_t["$nil?"]()["$!"]())?expr_l=this.$loc(begin_t):$truthy(end_t["$nil?"]()["$!"]())&&(expr_l=this.$loc(end_t)):expr_l=this.$loc(begin_t).$join(this.$loc(end_t)),$$$($$$($$($nesting,"Source"),"Map"),"Collection").$new(this.$loc(begin_t),this.$loc(end_t),expr_l)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$string_map",$Default_rewrite_hash_args_to_kwargs$206=function(begin_t,parts,end_t){var self=this,$ret_or_28=nil,expr_l=nil;return $truthy($truthy($ret_or_28=begin_t)?self.$value(begin_t)["$start_with?"]("<<"):$ret_or_28)?(expr_l=$truthy(parts["$any?"]())?self.$join_exprs(parts.$first(),parts.$last()):self.$loc(end_t).$begin(),$$$($$$($$($nesting,"Source"),"Map"),"Heredoc").$new(self.$loc(begin_t),expr_l,self.$loc(end_t))):self.$collection_map(begin_t,parts,end_t)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$regexp_map",$Default_rewrite_hash_args_to_kwargs$206=function(begin_t,end_t,options_e){return $$$($$$($$($nesting,"Source"),"Map"),"Collection").$new(this.$loc(begin_t),this.$loc(end_t),this.$loc(begin_t).$join(options_e.$loc().$expression()))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$constant_map",$Default_rewrite_hash_args_to_kwargs$206=function(scope,colon2_t,name_t){var expr_l=nil,expr_l=$truthy(scope["$nil?"]())?this.$loc(name_t):scope.$loc().$expression().$join(this.$loc(name_t));return $$$($$$($$($nesting,"Source"),"Map"),"Constant").$new(this.$loc(colon2_t),this.$loc(name_t),expr_l)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$variable_map",$Default_rewrite_hash_args_to_kwargs$206=function(name_t){return $$$($$$($$($nesting,"Source"),"Map"),"Variable").$new(this.$loc(name_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$binary_op_map",$Default_rewrite_hash_args_to_kwargs$206=function(left_e,op_t,right_e){return $$$($$$($$($nesting,"Source"),"Map"),"Operator").$new(this.$loc(op_t),this.$join_exprs(left_e,right_e))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$unary_op_map",$Default_rewrite_hash_args_to_kwargs$206=function(op_t,arg_e){var expr_l=nil;return null==arg_e&&(arg_e=nil),expr_l=$truthy(arg_e["$nil?"]())?this.$loc(op_t):this.$loc(op_t).$join(arg_e.$loc().$expression()),$$$($$$($$($nesting,"Source"),"Map"),"Operator").$new(this.$loc(op_t),expr_l)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=-2),Opal.def($Default_kwargs$ques$207,"$range_map",$Default_rewrite_hash_args_to_kwargs$206=function(start_e,op_t,end_e){var $ret_or_29=nil,expr_l=nil;return $truthy($truthy($ret_or_29=start_e)?end_e:$ret_or_29)?expr_l=this.$join_exprs(start_e,end_e):$truthy(start_e)?expr_l=start_e.$loc().$expression().$join(this.$loc(op_t)):$truthy(end_e)&&(expr_l=this.$loc(op_t).$join(end_e.$loc().$expression())),$$$($$$($$($nesting,"Source"),"Map"),"Operator").$new(this.$loc(op_t),expr_l)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$arg_prefix_map",$Default_rewrite_hash_args_to_kwargs$206=function(op_t,name_t){var expr_l=nil;return null==name_t&&(name_t=nil),expr_l=$truthy(name_t["$nil?"]())?this.$loc(op_t):this.$loc(op_t).$join(this.$loc(name_t)),$$$($$$($$($nesting,"Source"),"Map"),"Variable").$new(this.$loc(name_t),expr_l)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=-2),Opal.def($Default_kwargs$ques$207,"$kwarg_map",$Default_rewrite_hash_args_to_kwargs$206=function(name_t,value_e){var name_range,expr_l=nil;return null==value_e&&(value_e=nil),name_range=this.$loc(name_t).$adjust($hash2(["end_pos"],{end_pos:-1})),expr_l=$truthy(value_e)?this.$loc(name_t).$join(value_e.$loc().$expression()):this.$loc(name_t),$$$($$$($$($nesting,"Source"),"Map"),"Variable").$new(name_range,expr_l)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=-2),Opal.def($Default_kwargs$ques$207,"$module_definition_map",$Default_rewrite_hash_args_to_kwargs$206=function(keyword_t,name_e,operator_t,end_t){var name_l=nil;return $truthy(name_e)&&(name_l=name_e.$loc().$expression()),$$$($$$($$($nesting,"Source"),"Map"),"Definition").$new(this.$loc(keyword_t),this.$loc(operator_t),name_l,this.$loc(end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=4),Opal.def($Default_kwargs$ques$207,"$definition_map",$Default_rewrite_hash_args_to_kwargs$206=function(keyword_t,operator_t,name_t,end_t){return $$$($$$($$($nesting,"Source"),"Map"),"MethodDefinition").$new(this.$loc(keyword_t),this.$loc(operator_t),this.$loc(name_t),this.$loc(end_t),nil,nil)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=4),Opal.def($Default_kwargs$ques$207,"$endless_definition_map",$Default_rewrite_hash_args_to_kwargs$206=function(keyword_t,operator_t,name_t,assignment_t,body_e){var body_l=body_e.$loc().$expression();return $$$($$$($$($nesting,"Source"),"Map"),"MethodDefinition").$new(this.$loc(keyword_t),this.$loc(operator_t),this.$loc(name_t),nil,this.$loc(assignment_t),body_l)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=5),Opal.def($Default_kwargs$ques$207,"$send_map",$Default_rewrite_hash_args_to_kwargs$206=function(receiver_e,dot_t,selector_t,begin_t,args,end_t){var begin_l=nil,end_l=nil;return null==begin_t&&(begin_t=nil),null==args&&(args=[]),null==end_t&&(end_t=nil),$truthy(receiver_e)?begin_l=receiver_e.$loc().$expression():$truthy(selector_t)&&(begin_l=this.$loc(selector_t)),$truthy(end_t)?end_l=this.$loc(end_t):$truthy(args["$any?"]())?end_l=args.$last().$loc().$expression():$truthy(selector_t)&&(end_l=this.$loc(selector_t)),$$$($$$($$($nesting,"Source"),"Map"),"Send").$new(this.$loc(dot_t),this.$loc(selector_t),this.$loc(begin_t),this.$loc(end_t),begin_l.$join(end_l))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=-4),Opal.def($Default_kwargs$ques$207,"$var_send_map",$Default_rewrite_hash_args_to_kwargs$206=function(variable_e){return $$$($$$($$($nesting,"Source"),"Map"),"Send").$new(nil,variable_e.$loc().$expression(),nil,nil,variable_e.$loc().$expression())},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$send_binary_op_map",$Default_rewrite_hash_args_to_kwargs$206=function(lhs_e,selector_t,rhs_e){return $$$($$$($$($nesting,"Source"),"Map"),"Send").$new(nil,this.$loc(selector_t),nil,nil,this.$join_exprs(lhs_e,rhs_e))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$send_unary_op_map",$Default_rewrite_hash_args_to_kwargs$206=function(selector_t,arg_e){var expr_l=nil,expr_l=$truthy(arg_e["$nil?"]())?this.$loc(selector_t):this.$loc(selector_t).$join(arg_e.$loc().$expression());return $$$($$$($$($nesting,"Source"),"Map"),"Send").$new(nil,this.$loc(selector_t),nil,nil,expr_l)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$index_map",$Default_rewrite_hash_args_to_kwargs$206=function(receiver_e,lbrack_t,rbrack_t){return $$$($$$($$($nesting,"Source"),"Map"),"Index").$new(this.$loc(lbrack_t),this.$loc(rbrack_t),receiver_e.$loc().$expression().$join(this.$loc(rbrack_t)))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$send_index_map",$Default_rewrite_hash_args_to_kwargs$206=function(receiver_e,lbrack_t,rbrack_t){return $$$($$$($$($nesting,"Source"),"Map"),"Send").$new(nil,this.$loc(lbrack_t).$join(this.$loc(rbrack_t)),nil,nil,receiver_e.$loc().$expression().$join(this.$loc(rbrack_t)))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$block_map",$Default_rewrite_hash_args_to_kwargs$206=function(receiver_l,begin_t,end_t){return $$$($$$($$($nesting,"Source"),"Map"),"Collection").$new(this.$loc(begin_t),this.$loc(end_t),receiver_l.$join(this.$loc(end_t)))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$keyword_map",$Default_rewrite_hash_args_to_kwargs$206=function(keyword_t,begin_t,args,end_t){var $ret_or_30=nil,end_l=nil,$ret_or_31=nil,$ret_or_32=nil;return args=$truthy($ret_or_30=args)?$ret_or_30:[],end_l=$truthy(end_t)?this.$loc(end_t):$truthy($truthy($ret_or_31=args["$any?"]())?args.$last()["$nil?"]()["$!"]():$ret_or_31)?args.$last().$loc().$expression():$truthy($truthy($ret_or_32=args["$any?"]())?$rb_gt(args.$count(),1):$ret_or_32)?args["$[]"](-2).$loc().$expression():this.$loc(keyword_t),$$$($$$($$($nesting,"Source"),"Map"),"Keyword").$new(this.$loc(keyword_t),this.$loc(begin_t),this.$loc(end_t),this.$loc(keyword_t).$join(end_l))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=4),Opal.def($Default_kwargs$ques$207,"$keyword_mod_map",$Default_rewrite_hash_args_to_kwargs$206=function(pre_e,keyword_t,post_e){return $$$($$$($$($nesting,"Source"),"Map"),"Keyword").$new(this.$loc(keyword_t),nil,nil,this.$join_exprs(pre_e,post_e))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$condition_map",$Default_rewrite_hash_args_to_kwargs$206=function(keyword_t,cond_e,begin_t,body_e,else_t,else_e,end_t){var end_l=nil,$ret_or_33=nil,$ret_or_34=nil,end_l=$truthy(end_t)?this.$loc(end_t):$truthy($truthy($ret_or_33=else_e)?else_e.$loc().$expression():$ret_or_33)?else_e.$loc().$expression():$truthy(this.$loc(else_t))?this.$loc(else_t):$truthy($truthy($ret_or_34=body_e)?body_e.$loc().$expression():$ret_or_34)?body_e.$loc().$expression():$truthy(this.$loc(begin_t))?this.$loc(begin_t):cond_e.$loc().$expression();return $$$($$$($$($nesting,"Source"),"Map"),"Condition").$new(this.$loc(keyword_t),this.$loc(begin_t),this.$loc(else_t),this.$loc(end_t),this.$loc(keyword_t).$join(end_l))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=7),Opal.def($Default_kwargs$ques$207,"$ternary_map",$Default_rewrite_hash_args_to_kwargs$206=function(begin_e,question_t,mid_e,colon_t,end_e){return $$$($$$($$($nesting,"Source"),"Map"),"Ternary").$new(this.$loc(question_t),this.$loc(colon_t),this.$join_exprs(begin_e,end_e))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=5),Opal.def($Default_kwargs$ques$207,"$for_map",$Default_rewrite_hash_args_to_kwargs$206=function(keyword_t,in_t,begin_t,end_t){return $$$($$$($$($nesting,"Source"),"Map"),"For").$new(this.$loc(keyword_t),this.$loc(in_t),this.$loc(begin_t),this.$loc(end_t),this.$loc(keyword_t).$join(this.$loc(end_t)))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=4),Opal.def($Default_kwargs$ques$207,"$rescue_body_map",$Default_rewrite_hash_args_to_kwargs$206=function(keyword_t,exc_list_e,assoc_t,exc_var_e,then_t,compstmt_e){var end_l=nil,$ret_or_35=nil,$ret_or_36=nil,$ret_or_37=nil;return $truthy(compstmt_e)&&(end_l=compstmt_e.$loc().$expression()),$truthy($truthy($ret_or_35=end_l["$nil?"]())?then_t:$ret_or_35)&&(end_l=this.$loc(then_t)),$truthy($truthy($ret_or_36=end_l["$nil?"]())?exc_var_e:$ret_or_36)&&(end_l=exc_var_e.$loc().$expression()),$truthy($truthy($ret_or_37=end_l["$nil?"]())?exc_list_e:$ret_or_37)&&(end_l=exc_list_e.$loc().$expression()),$truthy(end_l["$nil?"]())&&(end_l=this.$loc(keyword_t)),$$$($$$($$($nesting,"Source"),"Map"),"RescueBody").$new(this.$loc(keyword_t),this.$loc(assoc_t),this.$loc(then_t),this.$loc(keyword_t).$join(end_l))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=6),Opal.def($Default_kwargs$ques$207,"$eh_keyword_map",$Default_rewrite_hash_args_to_kwargs$206=function(compstmt_e,keyword_t,body_es,else_t,else_e){var begin_l=nil,end_l=nil,begin_l=$truthy(compstmt_e["$nil?"]())?$truthy(keyword_t["$nil?"]())?body_es.$first().$loc().$expression():this.$loc(keyword_t):compstmt_e.$loc().$expression(),end_l=$truthy(else_t)?$truthy(else_e["$nil?"]())?this.$loc(else_t):else_e.$loc().$expression():$truthy(body_es.$last()["$nil?"]()["$!"]())?body_es.$last().$loc().$expression():this.$loc(keyword_t);return $$$($$$($$($nesting,"Source"),"Map"),"Condition").$new(this.$loc(keyword_t),nil,this.$loc(else_t),nil,begin_l.$join(end_l))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=5),Opal.def($Default_kwargs$ques$207,"$guard_map",$Default_rewrite_hash_args_to_kwargs$206=function(keyword_t,guard_body_e){var keyword_l=nil,keyword_l=this.$loc(keyword_t),guard_body_l=guard_body_e.$loc().$expression();return $$$($$$($$($nesting,"Source"),"Map"),"Keyword").$new(keyword_l,nil,nil,keyword_l.$join(guard_body_l))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$static_string",$Default_rewrite_hash_args_to_kwargs$206=function(nodes){try{var $$197;return $send(nodes,"map",[],(($$197=function(node){var $case,string,self=null==$$197.$$s?this:$$197.$$s;return null==node&&(node=nil),function(){if($case=node.$type(),"str"["$==="]($case))return node.$children()["$[]"](0);if("begin"["$==="]($case)){if($truthy(string=self.$static_string(node.$children())))return string;Opal.ret(nil)}else Opal.ret(nil)}()}).$$s=this,$$197.$$arity=1,$$197)).$join()}catch($returner){if($returner===Opal.returner)return $returner.$v;throw $returner}},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$static_regexp",$Default_rewrite_hash_args_to_kwargs$206=function(parts,options){var source=nil,source=this.$static_string(parts);return $truthy(source["$nil?"]())?nil:(source=$truthy(options.$children()["$include?"]("u"))?source.$encode($$$($$($nesting,"Encoding"),"UTF_8")):$truthy(options.$children()["$include?"]("e"))?source.$encode($$$($$($nesting,"Encoding"),"EUC_JP")):$truthy(options.$children()["$include?"]("s"))?source.$encode($$$($$($nesting,"Encoding"),"WINDOWS_31J")):$truthy(options.$children()["$include?"]("n"))?source.$encode($$$($$($nesting,"Encoding"),"BINARY")):source,$$($nesting,"Regexp").$new(source,$truthy(options.$children()["$include?"]("x"))?$$$($$($nesting,"Regexp"),"EXTENDED"):nil))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$static_regexp_node",$Default_rewrite_hash_args_to_kwargs$206=function($a){var parts,options;return $a.$type()["$=="]("regexp")?(parts=($a=[$a.$children()["$[]"]($range(0,-2,!1)),$a.$children()["$[]"](-1)])[0],options=$a[1],this.$static_regexp(parts,options)):nil},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$collapse_string_parts?",$Default_rewrite_hash_args_to_kwargs$206=function(parts){var $ret_or_38;return $truthy($ret_or_38=parts["$one?"]())?["str","dstr"]["$include?"](parts.$first().$type()):$ret_or_38},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$value",$Default_rewrite_hash_args_to_kwargs$206=function(token){return token["$[]"](0)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$string_value",$Default_rewrite_hash_args_to_kwargs$206=function(token){return $truthy(token["$[]"](0)["$valid_encoding?"]())||this.$diagnostic("error","invalid_encoding",nil,token["$[]"](1)),token["$[]"](0)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$loc",$Default_rewrite_hash_args_to_kwargs$206=function(token){var $ret_or_39=nil;return $truthy($truthy($ret_or_39=token)?token["$[]"](0):$ret_or_39)?token["$[]"](1):nil},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$diagnostic",$Default_rewrite_hash_args_to_kwargs$206=function(type,reason,arguments$,location,highlights){return null==highlights&&(highlights=[]),this.parser.$diagnostics().$process($$($nesting,"Diagnostic").$new(type,reason,arguments$,location,highlights)),type["$=="]("error")?this.parser.$send("yyerror"):nil},$Default_rewrite_hash_args_to_kwargs$206.$$arity=-5),Opal.def($Default_kwargs$ques$207,"$validate_definee",$Default_rewrite_hash_args_to_kwargs$206=function(definee){var self=this,$case=nil;return $case=definee.$type(),!("int"["$==="]($case)||"str"["$==="]($case)||"dstr"["$==="]($case)||"sym"["$==="]($case)||"dsym"["$==="]($case)||"regexp"["$==="]($case)||"array"["$==="]($case)||"hash"["$==="]($case))||(self.$diagnostic("error","singleton_literal",nil,definee.$loc().$expression()),!1)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$rewrite_hash_args_to_kwargs",$Default_rewrite_hash_args_to_kwargs$206=function(args){var self=this,$ret_or_40=nil,$writer=nil,$ret_or_41=nil,$ret_or_42=nil;return $truthy($truthy($ret_or_40=args["$any?"]())?self["$kwargs?"](args.$last()):$ret_or_40)?($writer=[$rb_minus(args.$length(),1),args["$[]"]($rb_minus(args.$length(),1)).$updated("kwargs")],$send(args,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]):$truthy($truthy($ret_or_41=$truthy($ret_or_42=$rb_gt(args.$length(),1))?args.$last().$type()["$=="]("block_pass"):$ret_or_42)?self["$kwargs?"](args["$[]"]($rb_minus(args.$length(),2))):$ret_or_41)?($writer=[$rb_minus(args.$length(),2),args["$[]"]($rb_minus(args.$length(),2)).$updated("kwargs")],$send(args,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]):nil},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$kwargs?",$Default_kwargs$ques$207=function(node){var $ret_or_43,$ret_or_44=nil;return $truthy($ret_or_43=$truthy($ret_or_44=node.$type()["$=="]("hash"))?node.$loc().$begin()["$nil?"]():$ret_or_44)?node.$loc().$end()["$nil?"]():$ret_or_43},$Default_kwargs$ques$207.$$arity=1),nil&&"kwargs?"}($$($nesting,"Builders"),$nesting)}($nesting[0],$nesting)},Opal.modules["parser/context"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send=Opal.send,$truthy=Opal.truthy;return Opal.add_stubs(["$reset","$attr_accessor","$in_block","$in_lambda"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($nesting,$Context_reset$2){var $Context_in_dynamic_block$ques$3=$klass($nesting,null,"Context"),$nesting=[$Context_in_dynamic_block$ques$3].concat($Context_reset$2);return Opal.const_set($nesting[0],"FLAGS",["in_defined","in_kwarg","in_argdef","in_def","in_class","in_block","in_lambda"]),Opal.def($Context_in_dynamic_block$ques$3,"$initialize",$Context_reset$2=function(){return this.$reset()},$Context_reset$2.$$arity=0),Opal.def($Context_in_dynamic_block$ques$3,"$reset",$Context_reset$2=function(){return this.in_defined=!1,this.in_kwarg=!1,this.in_argdef=!1,this.in_def=!1,this.in_class=!1,this.in_block=!1,this.in_lambda=!1},$Context_reset$2.$$arity=0),$send($Context_in_dynamic_block$ques$3,"attr_accessor",Opal.to_a($$($nesting,"FLAGS"))),Opal.def($Context_in_dynamic_block$ques$3,"$in_dynamic_block?",$Context_in_dynamic_block$ques$3=function(){var $ret_or_1;return $truthy($ret_or_1=this.$in_block())?$ret_or_1:this.$in_lambda()},$Context_in_dynamic_block$ques$3.$$arity=0),nil&&"in_dynamic_block?"}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/max_numparam_stack"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$hash2=Opal.hash2,$send=Opal.send;return Opal.add_stubs(["$attr_reader","$==","$size","$set","$top","$>","$max","$[]","$last","$push","$pop","$private","$[]=","$-"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($MaxNumparamStack_set$10,$MaxNumparamStack_pop$9){var $MaxNumparamStack_set$10=$klass($MaxNumparamStack_set$10,null,"MaxNumparamStack"),$nesting=[$MaxNumparamStack_set$10].concat($MaxNumparamStack_pop$9);return $MaxNumparamStack_set$10.$$prototype.stack=nil,$MaxNumparamStack_set$10.$attr_reader("stack"),Opal.const_set($nesting[0],"ORDINARY_PARAMS",-1),Opal.def($MaxNumparamStack_set$10,"$initialize",$MaxNumparamStack_pop$9=function(){return this.stack=[]},$MaxNumparamStack_pop$9.$$arity=0),Opal.def($MaxNumparamStack_set$10,"$empty?",$MaxNumparamStack_pop$9=function(){return this.stack.$size()["$=="](0)},$MaxNumparamStack_pop$9.$$arity=0),Opal.def($MaxNumparamStack_set$10,"$has_ordinary_params!",$MaxNumparamStack_pop$9=function(){return this.$set($$($nesting,"ORDINARY_PARAMS"))},$MaxNumparamStack_pop$9.$$arity=0),Opal.def($MaxNumparamStack_set$10,"$has_ordinary_params?",$MaxNumparamStack_pop$9=function(){return this.$top()["$=="]($$($nesting,"ORDINARY_PARAMS"))},$MaxNumparamStack_pop$9.$$arity=0),Opal.def($MaxNumparamStack_set$10,"$has_numparams?",$MaxNumparamStack_pop$9=function(){var $ret_or_1,lhs,rhs;return $truthy($ret_or_1=this.$top())?(lhs=this.$top(),rhs=0,"number"==typeof lhs&&"number"==typeof rhs?rhs<lhs:lhs["$>"](rhs)):$ret_or_1},$MaxNumparamStack_pop$9.$$arity=0),Opal.def($MaxNumparamStack_set$10,"$register",$MaxNumparamStack_pop$9=function(numparam){return this.$set([this.$top(),numparam].$max())},$MaxNumparamStack_pop$9.$$arity=1),Opal.def($MaxNumparamStack_set$10,"$top",$MaxNumparamStack_pop$9=function(){return this.stack.$last()["$[]"]("value")},$MaxNumparamStack_pop$9.$$arity=0),Opal.def($MaxNumparamStack_set$10,"$push",$MaxNumparamStack_pop$9=function(static$){if(null==static$)static$=$hash2([],{});else if(!static$.$$is_hash)throw Opal.ArgumentError.$new("expected kwargs");if(!Opal.hasOwnProperty.call(static$.$$smap,"static"))throw Opal.ArgumentError.$new("missing keyword: static");return static$=static$.$$smap.static,this.stack.$push($hash2(["value","static"],{value:0,static:static$}))},$MaxNumparamStack_pop$9.$$arity=1),Opal.def($MaxNumparamStack_set$10,"$pop",$MaxNumparamStack_pop$9=function(){return this.stack.$pop()["$[]"]("value")},$MaxNumparamStack_pop$9.$$arity=0),$MaxNumparamStack_set$10.$private(),Opal.def($MaxNumparamStack_set$10,"$set",$MaxNumparamStack_set$10=function(rhs){var lhs=nil,lhs=["value",rhs];return $send(this.stack.$last(),"[]=",Opal.to_a(lhs)),lhs[rhs=1,"number"==typeof(lhs=lhs.length)&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)]},$MaxNumparamStack_set$10.$$arity=1),nil&&"set"}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/current_arg_stack"]=function(Opal){function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}Opal.top;var $nesting=[],nil=Opal.nil,$module=(Opal.$$$,Opal.$$,Opal.module),$klass=Opal.klass,$send=Opal.send;return Opal.add_stubs(["$attr_reader","$freeze","$==","$size","$<<","$-","$length","$[]=","$pop","$clear","$last"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($CurrentArgStack_top$7,$CurrentArgStack_reset$6){$CurrentArgStack_top$7=$klass($CurrentArgStack_top$7,null,"CurrentArgStack"),[$CurrentArgStack_top$7].concat($CurrentArgStack_reset$6);return $CurrentArgStack_top$7.$$prototype.stack=nil,$CurrentArgStack_top$7.$attr_reader("stack"),Opal.def($CurrentArgStack_top$7,"$initialize",$CurrentArgStack_reset$6=function(){return this.stack=[],this.$freeze()},$CurrentArgStack_reset$6.$$arity=0),Opal.def($CurrentArgStack_top$7,"$empty?",$CurrentArgStack_reset$6=function(){return this.stack.$size()["$=="](0)},$CurrentArgStack_reset$6.$$arity=0),Opal.def($CurrentArgStack_top$7,"$push",$CurrentArgStack_reset$6=function(value){return this.stack["$<<"](value)},$CurrentArgStack_reset$6.$$arity=1),Opal.def($CurrentArgStack_top$7,"$set",$CurrentArgStack_reset$6=function(value){var $writer=[$rb_minus(this.stack.$length(),1),value];return $send(this.stack,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]},$CurrentArgStack_reset$6.$$arity=1),Opal.def($CurrentArgStack_top$7,"$pop",$CurrentArgStack_reset$6=function(){return this.stack.$pop()},$CurrentArgStack_reset$6.$$arity=0),Opal.def($CurrentArgStack_top$7,"$reset",$CurrentArgStack_reset$6=function(){return this.stack.$clear()},$CurrentArgStack_reset$6.$$arity=0),Opal.def($CurrentArgStack_top$7,"$top",$CurrentArgStack_top$7=function(){return this.stack.$last()},$CurrentArgStack_top$7.$$arity=0),nil&&"top"}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/variables_stack"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass;return Opal.add_stubs(["$push","$empty?","$<<","$new","$pop","$clear","$last","$to_sym","$include?"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($VariablesStack_declared$ques$7,$VariablesStack_declare$6){var $VariablesStack_declared$ques$7=$klass($VariablesStack_declared$ques$7,null,"VariablesStack"),$nesting=[$VariablesStack_declared$ques$7].concat($VariablesStack_declare$6);return $VariablesStack_declared$ques$7.$$prototype.stack=nil,Opal.def($VariablesStack_declared$ques$7,"$initialize",$VariablesStack_declare$6=function(){return 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0},$DummyLocation_column$7.$$arity=0),Opal.def($DummyLocation_last_line$8,"$source",$DummyLocation_column$7=function(){return""},$DummyLocation_column$7.$$arity=0),Opal.def($DummyLocation_last_line$8,"$line",$DummyLocation_column$7=function(){return 0},$DummyLocation_column$7.$$arity=0),Opal.def($DummyLocation_last_line$8,"$column",$DummyLocation_column$7=function(){return 0},$DummyLocation_column$7.$$arity=0),Opal.def($DummyLocation_last_line$8,"$last_line",$DummyLocation_last_line$8=function(){return $$$($$($nesting,"Float"),"INFINITY")},$DummyLocation_last_line$8.$$arity=0)}($nesting[0],$nesting),Opal.const_set($nesting[0],"DUMMY_LOCATION",$$($nesting,"DummyLocation").$new()),Opal.def($Base_error$16,"$s",$Base_begin_with_stmts$14=function(type,$a){var self=this,children=Opal.slice.call(arguments,1,arguments.length),loc=$truthy(self.$current_node())?self.$current_node().$loc():$$($nesting,"DUMMY_LOCATION");return $$$($$$($$$("::","Opal"),"AST"),"Node").$new(type,children,$hash2(["location"],{location:loc}))},$Base_begin_with_stmts$14.$$arity=-2),Opal.defs($Base_error$16,"$s",$Base_begin_with_stmts$14=function(type,$a){var children=Opal.slice.call(arguments,1,arguments.length);return $$$($$$($$$("::","Opal"),"AST"),"Node").$new(type,children,$hash2(["location"],{location:$$($nesting,"DUMMY_LOCATION")}))},$Base_begin_with_stmts$14.$$arity=-2),$alias($Base_error$16,"on_iter","process_regular_node"),$alias($Base_error$16,"on_top","process_regular_node"),$alias($Base_error$16,"on_zsuper","process_regular_node"),$alias($Base_error$16,"on_jscall","on_send"),$alias($Base_error$16,"on_jsattr","process_regular_node"),$alias($Base_error$16,"on_jsattrasgn","process_regular_node"),$alias($Base_error$16,"on_kwsplat","process_regular_node"),Opal.def($Base_error$16,"$prepend_to_body",$Base_begin_with_stmts$14=function(body,node){var stmts=$rb_plus(this.$stmts_of(node),this.$stmts_of(body));return this.$begin_with_stmts(stmts)},$Base_begin_with_stmts$14.$$arity=2),Opal.def($Base_error$16,"$append_to_body",$Base_begin_with_stmts$14=function(body,node){var stmts=$rb_plus(this.$stmts_of(body),this.$stmts_of(node));return this.$begin_with_stmts(stmts)},$Base_begin_with_stmts$14.$$arity=2),Opal.def($Base_error$16,"$stmts_of",$Base_begin_with_stmts$14=function(node){return $truthy(node["$nil?"]())?[]:$truthy(["begin","kwbegin"]["$include?"](node.$type()))?node.$children():[node]},$Base_begin_with_stmts$14.$$arity=1),Opal.def($Base_error$16,"$begin_with_stmts",$Base_begin_with_stmts$14=function(stmts){var self=this,$case=nil;return $case=stmts.$length(),0["$==="]($case)?nil:1["$==="]($case)?stmts["$[]"](0):$send(self,"s",["begin"].concat(Opal.to_a(stmts)))},$Base_begin_with_stmts$14.$$arity=1),$Base_error$16.$attr_accessor("current_node"),Opal.def($Base_error$16,"$process",$Base_process$15=function(node){var $zuper_ii,$iter=$Base_process$15.$$p,self=this,$writer=nil,$zuper=nil,$zuper_i=nil;for($iter&&($Base_process$15.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return function(){try{return $writer=[node],$send(self,"current_node=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)],$send2(self,$find_super(self,"process",$Base_process$15,!1,!0),"process",$zuper,$iter)}finally{$writer=[nil],$send(self,"current_node=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]}}()},$Base_process$15.$$arity=1),Opal.def($Base_error$16,"$error",$Base_error$16=function(msg){var $writer,error=$$$($$$("::","Opal"),"RewritingError").$new(msg);return $truthy(this.$current_node())&&($writer=[this.$current_node().$loc()],$send(error,"location=",Opal.to_a($writer)),$rb_minus($writer.length,1)),this.$raise(error)},$Base_error$16.$$arity=1),nil&&"error"}($nesting[0],$$$($$$($$$("::","Parser"),"AST"),"Processor"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/opal_engine_check"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$send2=Opal.send2,$find_super=Opal.find_super;return Opal.add_stubs(["$require","$children","$skip_check_present?","$process","$s","$skip_check_present_not?","$=="]),self.$require("opal/rewriters/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Rewriters")].concat($nesting);return function($base,self,$OpalEngineCheck_skip_check_present_not$ques$3){var $OpalEngineCheck_on_if$1,self=$klass($base,self,"OpalEngineCheck"),$nesting=[self].concat($OpalEngineCheck_skip_check_present_not$ques$3);return Opal.def(self,"$on_if",$OpalEngineCheck_on_if$1=function(node){var $a,test,true_body,false_body,$zuper_ii,$iter=$OpalEngineCheck_on_if$1.$$p,self=this,$ret_or_1=nil,$ret_or_2=nil,$zuper=nil,$zuper_i=nil;for($iter&&($OpalEngineCheck_on_if$1.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return test=null==($a=[].concat(Opal.to_a(node.$children())))[0]?nil:$a[0],true_body=null==$a[1]?nil:$a[1],false_body=null==$a[2]?nil:$a[2],$truthy(self["$skip_check_present?"](test))?self.$process($truthy($ret_or_1=true_body)?$ret_or_1:self.$s("nil")):$truthy(self["$skip_check_present_not?"](test))?self.$process($truthy($ret_or_2=false_body)?$ret_or_2:self.$s("nil")):$send2(self,$find_super(self,"on_if",$OpalEngineCheck_on_if$1,!1,!0),"on_if",$zuper,$iter)},$OpalEngineCheck_on_if$1.$$arity=1),Opal.def(self,"$skip_check_present?",$OpalEngineCheck_skip_check_present_not$ques$3=function(test){var $ret_or_3;return $truthy($ret_or_3=test["$=="]($$($nesting,"RUBY_ENGINE_CHECK")))?$ret_or_3:test["$=="]($$($nesting,"RUBY_PLATFORM_CHECK"))},$OpalEngineCheck_skip_check_present_not$ques$3.$$arity=1),Opal.def(self,"$skip_check_present_not?",$OpalEngineCheck_skip_check_present_not$ques$3=function(test){var $ret_or_4;return $truthy($ret_or_4=test["$=="]($$($nesting,"RUBY_ENGINE_CHECK_NOT")))?$ret_or_4:test["$=="]($$($nesting,"RUBY_PLATFORM_CHECK_NOT"))},$OpalEngineCheck_skip_check_present_not$ques$3.$$arity=1),Opal.const_set($nesting[0],"RUBY_ENGINE_CHECK",self.$s("send",self.$s("const",nil,"RUBY_ENGINE"),"==",self.$s("str","opal"))),Opal.const_set($nesting[0],"RUBY_ENGINE_CHECK_NOT",self.$s("send",self.$s("const",nil,"RUBY_ENGINE"),"!=",self.$s("str","opal"))),Opal.const_set($nesting[0],"RUBY_PLATFORM_CHECK",self.$s("send",self.$s("const",nil,"RUBY_PLATFORM"),"==",self.$s("str","opal"))),Opal.const_set($nesting[0],"RUBY_PLATFORM_CHECK_NOT",self.$s("send",self.$s("const",nil,"RUBY_PLATFORM"),"!=",self.$s("str","opal")))}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/for_rewriter"]=function(Opal){function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send,$send2=Opal.send2,$find_super=Opal.find_super;return Opal.add_stubs(["$require","$+","$find","$map","$s","$next_tmp","$class","$type","$===","$<<","$prepend_to_body","$process","$attr_reader","$new","$to_a","$result"]),self.$require("opal/rewriters/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Rewriters")].concat($nesting);return function($base,$ForRewriter_on_for$3,$ForRewriter_next_tmp$2){var $ForRewriter_on_for$3=$klass($base,$ForRewriter_on_for$3,"ForRewriter"),$nesting=[$ForRewriter_on_for$3].concat($ForRewriter_next_tmp$2);return Opal.defs($ForRewriter_on_for$3,"$reset_tmp_counter!",$ForRewriter_next_tmp$2=function(){return this.counter=0},$ForRewriter_next_tmp$2.$$arity=0),Opal.defs($ForRewriter_on_for$3,"$next_tmp",$ForRewriter_next_tmp$2=function(){var self=this,$ret_or_1=nil;return null==self.counter&&(self.counter=nil),self.counter=$truthy($ret_or_1=self.counter)?$ret_or_1:0,self.counter=$rb_plus(self.counter,1),"$for_tmp"+self.counter},$ForRewriter_next_tmp$2.$$arity=0),Opal.def($ForRewriter_on_for$3,"$on_for",$ForRewriter_on_for$3=function(node){var $$4,self=this,loop_variable=nil,loop_variable_assignment=nil,$case=nil,$a=[].concat(Opal.to_a(node)),loop_variable=null==$a[0]?nil:$a[0],iterating_value=null==$a[1]?nil:$a[1],loop_body=null==$a[2]?nil:$a[2],iterating_lvars=$$($nesting,"LocalVariableAssigns").$find(loop_variable),lvars_declared_in_body=$$($nesting,"LocalVariableAssigns").$find(loop_body),outer_assigns=$send($rb_plus(iterating_lvars,lvars_declared_in_body),"map",[],(($$4=function(lvar_name){var self=null==$$4.$$s?this:$$4.$$s;return null==lvar_name&&(lvar_name=nil),self.$s("lvdeclare",lvar_name)}).$$s=self,$$4.$$arity=1,$$4)),tmp_loop_variable=self.$class().$next_tmp(),get_tmp_loop_variable=self.$s("js_tmp",tmp_loop_variable);return $case=loop_variable.$type(),loop_variable_assignment="mlhs"["$==="]($case)?self.$s("masgn",loop_variable,get_tmp_loop_variable):loop_variable["$<<"](get_tmp_loop_variable),loop_body=self.$prepend_to_body(loop_body,loop_variable_assignment),node=self.$s("send",iterating_value,"each",self.$s("iter",self.$s("args",self.$s("arg",tmp_loop_variable)),self.$process(loop_body))),$send(self,"s",["begin"].concat(Opal.to_a(outer_assigns)).concat([node]))},$ForRewriter_on_for$3.$$arity=1),function($base,self,$LocalVariableAssigns_initialize$6){var $LocalVariableAssigns_on_lvasgn$7,self=$klass($base,self,"LocalVariableAssigns"),$nesting=[self].concat($LocalVariableAssigns_initialize$6);return self.$attr_reader("result"),Opal.defs(self,"$find",$LocalVariableAssigns_initialize$6=function(node){var processor=nil;return(processor=this.$new()).$process(node),processor.$result().$to_a()},$LocalVariableAssigns_initialize$6.$$arity=1),Opal.def(self,"$initialize",$LocalVariableAssigns_initialize$6=function(){return this.result=$$($nesting,"Set").$new()},$LocalVariableAssigns_initialize$6.$$arity=0),Opal.def(self,"$on_lvasgn",$LocalVariableAssigns_on_lvasgn$7=function(node){var $a,name,$zuper_ii,$iter=$LocalVariableAssigns_on_lvasgn$7.$$p,$zuper=nil,$zuper_i=nil;for($iter&&($LocalVariableAssigns_on_lvasgn$7.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return name=null==($a=[].concat(Opal.to_a(node)))[0]?nil:$a[0],null==$a[1]||$a[1],this.$result()["$<<"](name),$send2(this,$find_super(this,"on_lvasgn",$LocalVariableAssigns_on_lvasgn$7,!1,!0),"on_lvasgn",$zuper,$iter)},$LocalVariableAssigns_on_lvasgn$7.$$arity=1),nil&&"on_lvasgn"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/explicit_writer_return"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$send2=Opal.send2,$find_super=Opal.find_super,$slice=Opal.slice,$send=Opal.send;return Opal.add_stubs(["$require","$s","$=~","$to_s","$==","$process_all","$updated"]),self.$require("opal/rewriters/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Rewriters")].concat($nesting);return function($base,self,$ExplicitWriterReturn_initialize$1){var $ExplicitWriterReturn_on_send$2,$ExplicitWriterReturn_on_masgn$3,self=$klass($base,self,"ExplicitWriterReturn"),$nesting=[self].concat($ExplicitWriterReturn_initialize$1);return self.$$prototype.in_masgn=nil,Opal.def(self,"$initialize",$ExplicitWriterReturn_initialize$1=function(){return this.in_masgn=!1},$ExplicitWriterReturn_initialize$1.$$arity=0),Opal.const_set($nesting[0],"TMP_NAME","$writer"),Opal.const_set($nesting[0],"GET_ARGS_NODE",self.$s("lvar",$$($nesting,"TMP_NAME"))),Opal.const_set($nesting[0],"RETURN_ARGS_NODE",self.$s("jsattr",$$($nesting,"GET_ARGS_NODE"),self.$s("send",self.$s("jsattr",$$($nesting,"GET_ARGS_NODE"),self.$s("str","length")),"-",self.$s("int",1)))),Opal.def(self,"$on_send",$ExplicitWriterReturn_on_send$2=function(node){var $a,recv,args,set_args_node,$zuper_ii,$iter=$ExplicitWriterReturn_on_send$2.$$p,method_name=nil,$ret_or_1=nil,$zuper=nil,$zuper_i=nil;for($iter&&($ExplicitWriterReturn_on_send$2.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return $truthy(this.in_masgn)?$send2(this,$find_super(this,"on_send",$ExplicitWriterReturn_on_send$2,!1,!0),"on_send",$zuper,$iter):(recv=null==($a=[].concat(Opal.to_a(node)))[0]?nil:$a[0],method_name=null==$a[1]?nil:$a[1],args=$slice.call($a,2),$truthy($truthy($ret_or_1=method_name.$to_s()["$=~"](Opal.regexp([$$($nesting,"REGEXP_START"),"\\w+=",$$($nesting,"REGEXP_END")])))?$ret_or_1:method_name.$to_s()["$=="]("[]="))?(set_args_node=this.$s("lvasgn",$$($nesting,"TMP_NAME"),$send(this,"s",["array"].concat(Opal.to_a(this.$process_all(args))))),this.$s("begin",set_args_node,node.$updated(nil,[recv,method_name,this.$s("splat",$$($nesting,"GET_ARGS_NODE"))]),$$($nesting,"RETURN_ARGS_NODE"))):$send2(this,$find_super(this,"on_send",$ExplicitWriterReturn_on_send$2,!1,!0),"on_send",$zuper,$iter))},$ExplicitWriterReturn_on_send$2.$$arity=1),Opal.def(self,"$on_masgn",$ExplicitWriterReturn_on_masgn$3=function(node){var result,$zuper_ii,$iter=$ExplicitWriterReturn_on_masgn$3.$$p,$zuper=nil,$zuper_i=nil;for($iter&&($ExplicitWriterReturn_on_masgn$3.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return this.in_masgn=!0,result=$send2(this,$find_super(this,"on_masgn",$ExplicitWriterReturn_on_masgn$3,!1,!0),"on_masgn",$zuper,$iter),this.in_masgn=!1,result},$ExplicitWriterReturn_on_masgn$3.$$arity=1),nil&&"on_masgn"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/js_reserved_words"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$range=Opal.range,$send2=Opal.send2,$find_super=Opal.find_super,$hash2=Opal.hash2;return Opal.add_stubs(["$require","$freeze","$=~","$!","$valid_name?","$class","$to_sym","$valid_ivar_name?","$[]","$to_s","$updated","$fix_var_name","$fix_ivar_name"]),self.$require("opal/rewriters/base"),self.$require("opal/regexp_anchors"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Rewriters")].concat($nesting);return function($base,self,$JsReservedWords_on_restarg$9){var $JsReservedWords_on_lvar$5,$JsReservedWords_on_lvasgn$6,$JsReservedWords_on_ivar$7,$JsReservedWords_on_ivasgn$8,$JsReservedWords_on_argument$10,self=$klass($base,self,"JsReservedWords"),$nesting=[self].concat($JsReservedWords_on_restarg$9);return Opal.const_set($nesting[0],"ES51_RESERVED_WORD",Opal.regexp([$$($nesting,"REGEXP_START"),"(?:do|if|in|for|let|new|try|var|case|else|enum|eval|false|null|this|true|void|with|break|catch|class|const|super|throw|while|yield|delete|export|import|public|return|static|switch|typeof|default|extends|finally|package|private|continue|debugger|function|arguments|interface|protected|implements|instanceof)",$$($nesting,"REGEXP_END")]).$freeze()),Opal.const_set($nesting[0],"ES3_RESERVED_WORD_EXCLUSIVE",Opal.regexp([$$($nesting,"REGEXP_START"),"(?:int|byte|char|goto|long|final|float|short|double|native|throws|boolean|abstract|volatile|transient|synchronized)",$$($nesting,"REGEXP_END")]).$freeze()),Opal.const_set($nesting[0],"PROTO_SPECIAL_PROPS",Opal.regexp([$$($nesting,"REGEXP_START"),"(?:constructor|displayName|__proto__|__parent__|__noSuchMethod__|__count__)",$$($nesting,"REGEXP_END")]).$freeze()),Opal.const_set($nesting[0],"PROTO_SPECIAL_METHODS",Opal.regexp([$$($nesting,"REGEXP_START"),"(?:hasOwnProperty|valueOf)",$$($nesting,"REGEXP_END")]).$freeze()),Opal.const_set($nesting[0],"IMMUTABLE_PROPS",Opal.regexp([$$($nesting,"REGEXP_START"),"(?:NaN|Infinity|undefined)",$$($nesting,"REGEXP_END")]).$freeze()),Opal.const_set($nesting[0],"BASIC_IDENTIFIER_RULES",Opal.regexp([$$($nesting,"REGEXP_START"),"[$_a-z][$_a-z\\d]*",$$($nesting,"REGEXP_END")],"i").$freeze()),Opal.const_set($nesting[0],"RESERVED_FUNCTION_NAMES",Opal.regexp([$$($nesting,"REGEXP_START"),"(?:Array)",$$($nesting,"REGEXP_END")]).$freeze()),Opal.defs(self,"$valid_name?",$JsReservedWords_on_restarg$9=function(name){var $ret_or_1,$ret_or_2=nil,$ret_or_3=nil;return $truthy($ret_or_1=$$($nesting,"BASIC_IDENTIFIER_RULES")["$=~"](name))?($truthy($ret_or_2=$truthy($ret_or_3=$$($nesting,"ES51_RESERVED_WORD")["$=~"](name))?$ret_or_3:$$($nesting,"ES3_RESERVED_WORD_EXCLUSIVE")["$=~"](name))?$ret_or_2:$$($nesting,"IMMUTABLE_PROPS")["$=~"](name))["$!"]():$ret_or_1},$JsReservedWords_on_restarg$9.$$arity=1),Opal.defs(self,"$valid_ivar_name?",$JsReservedWords_on_restarg$9=function(name){var $ret_or_4=nil;return($truthy($ret_or_4=$$($nesting,"PROTO_SPECIAL_PROPS")["$=~"](name))?$ret_or_4:$$($nesting,"PROTO_SPECIAL_METHODS")["$=~"](name))["$!"]()},$JsReservedWords_on_restarg$9.$$arity=1),Opal.def(self,"$fix_var_name",$JsReservedWords_on_restarg$9=function(name){return $truthy(this.$class()["$valid_name?"](name))?name:(name+"$").$to_sym()},$JsReservedWords_on_restarg$9.$$arity=1),Opal.def(self,"$fix_ivar_name",$JsReservedWords_on_restarg$9=function(name){return $truthy(this.$class()["$valid_ivar_name?"](name.$to_s()["$[]"]($range(1,-1,!1))))?name:(name+"$").$to_sym()},$JsReservedWords_on_restarg$9.$$arity=1),Opal.def(self,"$on_lvar",$JsReservedWords_on_lvar$5=function(node){var name,$a=$JsReservedWords_on_lvar$5.$$p;return $a&&($JsReservedWords_on_lvar$5.$$p=null),name=null==($a=[].concat(Opal.to_a(node)))[0]?nil:$a[0],null==$a[1]||$a[1],node=node.$updated(nil,[this.$fix_var_name(name)]),$send2(this,$find_super(this,"on_lvar",$JsReservedWords_on_lvar$5,!1,!0),"on_lvar",[node],null)},$JsReservedWords_on_lvar$5.$$arity=1),Opal.def(self,"$on_lvasgn",$JsReservedWords_on_lvasgn$6=function(node){var name,value,$a=$JsReservedWords_on_lvasgn$6.$$p,self=this;return $a&&($JsReservedWords_on_lvasgn$6.$$p=null),$a=[].concat(Opal.to_a(node)),name=null==$a[0]?nil:$a[0],value=null==$a[1]?nil:$a[1],node=$truthy(value)?node.$updated(nil,[self.$fix_var_name(name),value]):node.$updated(nil,[self.$fix_var_name(name)]),$send2(self,$find_super(self,"on_lvasgn",$JsReservedWords_on_lvasgn$6,!1,!0),"on_lvasgn",[node],null)},$JsReservedWords_on_lvasgn$6.$$arity=1),Opal.def(self,"$on_ivar",$JsReservedWords_on_ivar$7=function(node){var name,$a=$JsReservedWords_on_ivar$7.$$p;return $a&&($JsReservedWords_on_ivar$7.$$p=null),name=null==($a=[].concat(Opal.to_a(node)))[0]?nil:$a[0],null==$a[1]||$a[1],node=node.$updated(nil,[this.$fix_ivar_name(name)]),$send2(this,$find_super(this,"on_ivar",$JsReservedWords_on_ivar$7,!1,!0),"on_ivar",[node],null)},$JsReservedWords_on_ivar$7.$$arity=1),Opal.def(self,"$on_ivasgn",$JsReservedWords_on_ivasgn$8=function(node){var name,value,$a=$JsReservedWords_on_ivasgn$8.$$p,self=this;return $a&&($JsReservedWords_on_ivasgn$8.$$p=null),$a=[].concat(Opal.to_a(node)),name=null==$a[0]?nil:$a[0],value=null==$a[1]?nil:$a[1],node=$truthy(value)?node.$updated(nil,[self.$fix_ivar_name(name),value]):node.$updated(nil,[self.$fix_ivar_name(name)]),$send2(self,$find_super(self,"on_ivasgn",$JsReservedWords_on_ivasgn$8,!1,!0),"on_ivasgn",[node],null)},$JsReservedWords_on_ivasgn$8.$$arity=1),Opal.def(self,"$on_restarg",$JsReservedWords_on_restarg$9=function(node){var $a=[].concat(Opal.to_a(node)),name=null==$a[0]?nil:$a[0];null==$a[1]||$a[1];return $truthy(name)&&(node=node.$updated(nil,[this.$fix_var_name(name)],$hash2(["meta"],{meta:$hash2(["arg_name"],{arg_name:name})}))),node},$JsReservedWords_on_restarg$9.$$arity=1),Opal.def(self,"$on_argument",$JsReservedWords_on_argument$10=function(node){var name,value,fixed_name,new_children,$a=$JsReservedWords_on_argument$10.$$p;return $a&&($JsReservedWords_on_argument$10.$$p=null),node=$send2(this,$find_super(this,"on_argument",$JsReservedWords_on_argument$10,!1,!0),"on_argument",[node],null),name=null==($a=[].concat(Opal.to_a(node)))[0]?nil:$a[0],value=null==$a[1]?nil:$a[1],fixed_name=this.$fix_var_name(name),new_children=$truthy(value)?[fixed_name,value]:[fixed_name],node.$updated(nil,new_children,$hash2(["meta"],{meta:$hash2(["arg_name"],{arg_name:name})}))},$JsReservedWords_on_argument$10.$$arity=1),nil&&"on_argument"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/block_to_iter"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super;return Opal.add_stubs(["$require","$s","$updated","$+","$children"]),self.$require("opal/rewriters/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Rewriters")].concat($nesting);return function($base,self,$parent_nesting){var $BlockToIter_on_block$1,self=$klass($base,self,"BlockToIter");[self].concat($parent_nesting);return Opal.def(self,"$on_block",$BlockToIter_on_block$1=function(node){var args,body,$zuper_ii,$a=$BlockToIter_on_block$1.$$p,lhs=nil,rhs=nil,$zuper=nil,$zuper_i=nil;for($a&&($BlockToIter_on_block$1.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return lhs=null==($a=[].concat(Opal.to_a($send2(this,$find_super(this,"on_block",$BlockToIter_on_block$1,!1,!0),"on_block",$zuper,$a))))[0]?nil:$a[0],args=null==$a[1]?nil:$a[1],body=null==$a[2]?nil:$a[2],rhs=this.$s("iter",args,body),lhs.$updated(nil,(lhs=lhs.$children(),rhs=[rhs],"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)))},$BlockToIter_on_block$1.$$arity=1),nil&&"on_block"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/dot_js_syntax"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$slice=Opal.slice,$truthy=Opal.truthy,$send2=Opal.send2,$find_super=Opal.find_super,$send=Opal.send;return Opal.add_stubs(["$require","$==","$type","$===","$!=","$size","$error","$first","$to_js_attr_call","$to_js_attr_assign_call","$to_native_js_call","$s"]),self.$require("opal/rewriters/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Rewriters")].concat($nesting);return function($base,$DotJsSyntax_to_js_attr_assign_call$4,$DotJsSyntax_to_js_attr_call$3){var $DotJsSyntax_on_send$1,$DotJsSyntax_to_js_attr_assign_call$4=$klass($base,$DotJsSyntax_to_js_attr_assign_call$4,"DotJsSyntax");[$DotJsSyntax_to_js_attr_assign_call$4].concat($DotJsSyntax_to_js_attr_call$3);return Opal.def($DotJsSyntax_to_js_attr_assign_call$4,"$on_send",$DotJsSyntax_on_send$1=function(node){var $a,meth,recv_of_recv,$case,value,$zuper_ii,$iter=$DotJsSyntax_on_send$1.$$p,recv=nil,args=nil,$ret_or_1=nil,meth_of_recv=nil,property=nil,$zuper=nil,$zuper_i=nil;for($iter&&($DotJsSyntax_on_send$1.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return $a=[].concat(Opal.to_a(node)),recv=null==$a[0]?nil:$a[0],meth=null==$a[1]?nil:$a[1],args=$slice.call($a,2),$truthy($truthy($ret_or_1=recv)?recv.$type()["$=="]("send"):$ret_or_1)?(recv_of_recv=null==($a=[].concat(Opal.to_a(recv)))[0]?nil:$a[0],meth_of_recv=null==$a[1]?nil:$a[1],null==$a[2]||$a[2],meth_of_recv["$=="]("JS")?(node="[]"["$==="]($case=meth)?($truthy(args.$size()["$!="](1))&&this.$error(".JS[:property] syntax supports only one argument"),property=args.$first(),this.$to_js_attr_call(recv_of_recv,property)):"[]="["$==="]($case)?($truthy(args.$size()["$!="](2))&&this.$error(".JS[:property]= syntax supports only two arguments"),property=null==($a=[].concat(Opal.to_a(args)))[0]?nil:$a[0],value=null==$a[1]?nil:$a[1],this.$to_js_attr_assign_call(recv_of_recv,property,value)):this.$to_native_js_call(recv_of_recv,meth,args),$send2(this,$find_super(this,"on_send",$DotJsSyntax_on_send$1,!1,!0),"on_send",[node],null)):$send2(this,$find_super(this,"on_send",$DotJsSyntax_on_send$1,!1,!0),"on_send",$zuper,$iter)):$send2(this,$find_super(this,"on_send",$DotJsSyntax_on_send$1,!1,!0),"on_send",$zuper,$iter)},$DotJsSyntax_on_send$1.$$arity=1),Opal.def($DotJsSyntax_to_js_attr_assign_call$4,"$to_native_js_call",$DotJsSyntax_to_js_attr_call$3=function(recv,meth,args){return $send(this,"s",["jscall",recv,meth].concat(Opal.to_a(args)))},$DotJsSyntax_to_js_attr_call$3.$$arity=3),Opal.def($DotJsSyntax_to_js_attr_assign_call$4,"$to_js_attr_call",$DotJsSyntax_to_js_attr_call$3=function(recv,property){return this.$s("jsattr",recv,property)},$DotJsSyntax_to_js_attr_call$3.$$arity=2),Opal.def($DotJsSyntax_to_js_attr_assign_call$4,"$to_js_attr_assign_call",$DotJsSyntax_to_js_attr_assign_call$4=function(recv,property,value){return this.$s("jsattrasgn",recv,property,value)},$DotJsSyntax_to_js_attr_assign_call$4.$$arity=3),nil&&"to_js_attr_assign_call"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/pattern_matching"]=function(Opal){function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$slice=Opal.slice,$truthy=Opal.truthy,$send=Opal.send,$alias=Opal.alias;return Opal.add_stubs(["$require","$s","$convert_full_pattern","$raise_no_matching_pattern_error","$+","$process","$single_case_match","$private","$shift","$type","$===","$!","$empty?","$!=","$==","$class","$new","$run!","$variables","$pattern","$map","$<<","$array","$on_literal","$first","$children","$to_proc","$method","$each","$to_ast","$on_array_pattern","$compact","$[]"]),self.$require("opal/rewriters/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Rewriters")].concat($nesting);return function($base,$PatternMatching_convert_full_pattern$7,$PatternMatching_single_case_match$6){var $PatternMatching_initialize$1,$PatternMatching_convert_full_pattern$7=$klass($base,$PatternMatching_convert_full_pattern$7,"PatternMatching"),$nesting=[$PatternMatching_convert_full_pattern$7].concat($PatternMatching_single_case_match$6);return $PatternMatching_convert_full_pattern$7.$$prototype.depth=nil,Opal.def($PatternMatching_convert_full_pattern$7,"$initialize",$PatternMatching_initialize$1=function(){var $zuper_ii,$iter=$PatternMatching_initialize$1.$$p,$zuper=nil,$zuper_i=nil;for($iter&&($PatternMatching_initialize$1.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return this.depth=0,$send2(this,$find_super(this,"initialize",$PatternMatching_initialize$1,!1,!0),"initialize",$zuper,$iter)},$PatternMatching_initialize$1.$$arity=0),Opal.def($PatternMatching_convert_full_pattern$7,"$on_match_pattern",$PatternMatching_single_case_match$6=function($a){var $a=[].concat(Opal.to_a($a)),from=null==$a[0]?nil:$a[0],pat=null==$a[1]?nil:$a[1];return this.$s("begin",this.$s("lvasgn","$pmvar",from),this.$s("if",this.$convert_full_pattern(from,pat),nil,this.$raise_no_matching_pattern_error("$pmvar")))},$PatternMatching_single_case_match$6.$$arity=1),Opal.def($PatternMatching_convert_full_pattern$7,"$on_match_pattern_p",$PatternMatching_single_case_match$6=function($a){var $a=[].concat(Opal.to_a($a)),from=null==$a[0]?nil:$a[0],pat=null==$a[1]?nil:$a[1];return this.$s("if",this.$convert_full_pattern(from,pat),this.$s("true"),this.$s("false"))},$PatternMatching_single_case_match$6.$$arity=1),Opal.def($PatternMatching_convert_full_pattern$7,"$on_case_match",$PatternMatching_single_case_match$6=function($b){var $a,from,cases,cmvar=nil,els=nil;return this.depth=$rb_plus(this.depth,1),cmvar="$cmvar"+this.depth,from=null==($a=[].concat(Opal.to_a($b)))[0]?nil:$a[0],$b=($b=$a.length-1)<1?1:$b,cases=$slice.call($a,1,$b),els=null==$a[$b]?nil:$a[$b],$truthy(els)?this.$process(els):els=this.$raise_no_matching_pattern_error(cmvar),this.$s("begin",this.$s("lvasgn",cmvar,from),$send(this,"single_case_match",[cmvar].concat(Opal.to_a(cases)).concat([els])))},$PatternMatching_single_case_match$6.$$arity=1),$PatternMatching_convert_full_pattern$7.$private(),Opal.def($PatternMatching_convert_full_pattern$7,"$raise_no_matching_pattern_error",$PatternMatching_single_case_match$6=function(from){return this.$s("send",nil,"raise",this.$s("const",nil,"NoMatchingPatternError"),this.$s("lvar",from))},$PatternMatching_single_case_match$6.$$arity=1),Opal.def($PatternMatching_convert_full_pattern$7,"$single_case_match",$PatternMatching_single_case_match$6=function(from,$a,$b){var body,guard,$case,self=this,$c=nil,pat=nil,if_guard=nil,$post_args=Opal.slice.call(arguments,1,arguments.length),cases=$post_args.splice(0,$post_args.length-1),els=$post_args[0];return $post_args.splice(0,1),null==els&&(els=nil),$c=cases.$shift(),pat=null==($c=[].concat(Opal.to_a($c)))[0]?nil:$c[0],if_guard=null==$c[1]?nil:$c[1],body=null==$c[2]?nil:$c[2],pat=self.$convert_full_pattern(from,pat),$truthy(if_guard)&&(guard=null==($c=[].concat(Opal.to_a(if_guard)))[0]?nil:$c[0],$case=if_guard.$type(),"if_guard"["$==="]($case)?pat=self.$s("and",pat,guard):"unless_guard"["$==="]($case)&&(pat=self.$s("and",pat,self.$s("send",guard,"!")))),self.$s("if",pat,self.$process(body),$truthy(cases["$empty?"]()["$!"]())?$send(self,"single_case_match",[from].concat(Opal.to_a(cases)).concat([els])):$truthy(els["$!="](self.$s("empty_else")))?els:nil)},$PatternMatching_single_case_match$6.$$arity=-3),Opal.def($PatternMatching_convert_full_pattern$7,"$convert_full_pattern",$PatternMatching_convert_full_pattern$7=function(from,pat){var converter=nil;return from.$class()["$=="]($$($nesting,"Symbol"))&&(from=this.$s("lvar",from)),(converter=$$($nesting,"PatternConverter").$new(pat))["$run!"](),this.$s("masgn",$send(this,"s",["mlhs"].concat(Opal.to_a(converter.$variables()))),this.$s("send",this.$s("const",this.$s("cbase"),"PatternMatching"),"call",from,converter.$pattern()))},$PatternMatching_convert_full_pattern$7.$$arity=2),function($base,$PatternConverter_to_ast$27,$PatternConverter_array$26){var $PatternConverter_to_ast$27=$klass($base,$PatternConverter_to_ast$27,"PatternConverter"),$nesting=[$PatternConverter_to_ast$27].concat($PatternConverter_array$26);return $PatternConverter_to_ast$27.$$prototype.pat=$PatternConverter_to_ast$27.$$prototype.outpat=$PatternConverter_to_ast$27.$$prototype.variables=nil,Opal.def($PatternConverter_to_ast$27,"$initialize",$PatternConverter_array$26=function(pat){return this.pat=pat,this.variables=[]},$PatternConverter_array$26.$$arity=1),Opal.def($PatternConverter_to_ast$27,"$run!",$PatternConverter_array$26=function(){return this.outpat=this.$process(this.pat)},$PatternConverter_array$26.$$arity=0),Opal.def($PatternConverter_to_ast$27,"$pattern",$PatternConverter_array$26=function(){return this.outpat},$PatternConverter_array$26.$$arity=0),Opal.def($PatternConverter_to_ast$27,"$variables",$PatternConverter_array$26=function(){var $$12;return $send(this.variables,"map",[],(($$12=function(i){var self=null==$$12.$$s?this:$$12.$$s;return null==i&&(i=nil),self.$s("lvasgn",i)}).$$s=this,$$12.$$arity=1,$$12))},$PatternConverter_array$26.$$arity=0),Opal.def($PatternConverter_to_ast$27,"$on_match_var",$PatternConverter_array$26=function($a){var $a=[].concat(Opal.to_a($a)),var$=null==$a[0]?nil:$a[0];return this.variables["$<<"](var$),this.$s("sym","var")},$PatternConverter_array$26.$$arity=1),Opal.def($PatternConverter_to_ast$27,"$on_match_as",$PatternConverter_array$26=function($a){var $a=[].concat(Opal.to_a($a)),pat=null==$a[0]?nil:$a[0],save=null==$a[1]?nil:$a[1];return this.$process(save),this.$array(this.$s("sym","save"),this.$process(pat))},$PatternConverter_array$26.$$arity=1),Opal.def($PatternConverter_to_ast$27,"$on_literal",$PatternConverter_array$26=function(node){return this.$array(this.$s("sym","lit"),node)},$PatternConverter_array$26.$$arity=1),$alias($PatternConverter_to_ast$27,"on_int","on_literal"),$alias($PatternConverter_to_ast$27,"on_float","on_literal"),$alias($PatternConverter_to_ast$27,"on_complex","on_literal"),$alias($PatternConverter_to_ast$27,"on_rational","on_literal"),$alias($PatternConverter_to_ast$27,"on_array","on_literal"),$alias($PatternConverter_to_ast$27,"on_str","on_literal"),$alias($PatternConverter_to_ast$27,"on_dstr","on_literal"),$alias($PatternConverter_to_ast$27,"on_xstr","on_literal"),$alias($PatternConverter_to_ast$27,"on_sym","on_literal"),$alias($PatternConverter_to_ast$27,"on_irange","on_literal"),$alias($PatternConverter_to_ast$27,"on_erange","on_literal"),$alias($PatternConverter_to_ast$27,"on_const","on_literal"),$alias($PatternConverter_to_ast$27,"on_regexp","on_literal"),$alias($PatternConverter_to_ast$27,"on_lambda","on_literal"),$alias($PatternConverter_to_ast$27,"on_begin","on_literal"),Opal.def($PatternConverter_to_ast$27,"$on_pin",$PatternConverter_array$26=function(node){return 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Opal.add_stubs(["$require","$+","$updated","$s","$include?","$==","$[]","$type","$new_temp","$freeze","$call","$fetch","$error","$process"]),self.$require("opal/rewriters/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Rewriters")].concat($nesting);return function($base,self,$LogicalOperatorAssignment_on_and_asgn$9){var $LogicalOperatorAssignment$3,$LogicalOperatorAssignment_on_defined$ques$11,self=$klass($base,self,"LogicalOperatorAssignment"),$nesting=[self].concat($LogicalOperatorAssignment_on_and_asgn$9);return Opal.defs(self,"$reset_tmp_counter!",$LogicalOperatorAssignment_on_and_asgn$9=function(){return $class_variable_set($nesting[0],"@@counter",0)},$LogicalOperatorAssignment_on_and_asgn$9.$$arity=0),Opal.defs(self,"$new_temp",$LogicalOperatorAssignment_on_and_asgn$9=function(){var lhs,rhs=nil;return 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$truthy($truthy($ret_or_3=recvr)?recvr.$type()["$=="]("send"):$ret_or_3)&&(recvr_tmp=this.$new_temp(),cache_recvr=this.$s("lvasgn",recvr_tmp,recvr),recvr=this.$s("js_tmp",recvr_tmp)),writer_method=reader_method+"=",call_reader=lhs.$updated("send",[recvr,reader_method].concat(Opal.to_a(args))),call_writer=lhs.$updated("send",[recvr,writer_method].concat(Opal.to_a(args)).concat([rhs])),get_or_set=this.$s(root_type,call_reader,call_writer),$truthy(cache_recvr)?this.$s("begin",cache_recvr,get_or_set):get_or_set},$SendHandler_call$5.$$arity=3)}($nesting[0],self,$nesting),function($base,$ConditionalSendHandler_call$6,$parent_nesting){[$ConditionalSendHandler_call$6=$klass($base,$ConditionalSendHandler_call$6,"ConditionalSendHandler")].concat($parent_nesting),Opal.defs($ConditionalSendHandler_call$6,"$call",$ConditionalSendHandler_call$6=function(lhs,rhs,root_type){var $a,args,recvr_tmp,cache_recvr,recvr_is_nil,plain_send,plain_or_asgn,recvr=nil,meth=nil;return root_type+="_asgn",recvr=null==($a=[].concat(Opal.to_a(lhs)))[0]?nil:$a[0],meth=null==$a[1]?nil:$a[1],args=$slice.call($a,2),recvr_tmp=this.$new_temp(),cache_recvr=this.$s("lvasgn",recvr_tmp,recvr),recvr=this.$s("js_tmp",recvr_tmp),recvr_is_nil=this.$s("send",recvr,"nil?"),plain_send=lhs.$updated("send",[recvr,meth].concat(Opal.to_a(args))),plain_or_asgn=this.$s(root_type,plain_send,rhs),this.$s("begin",cache_recvr,this.$s("if",recvr_is_nil,this.$s("nil"),plain_or_asgn))},$ConditionalSendHandler_call$6.$$arity=3)}($nesting[0],self,$nesting),Opal.const_set($nesting[0],"HANDLERS",$hash2(["lvasgn","ivasgn","casgn","gvasgn","cvasgn","send","csend"],{lvasgn:$$($nesting,"LocalVariableHandler"),ivasgn:$$($nesting,"InstanceVariableHandler"),casgn:$$($nesting,"ConstantHandler"),gvasgn:$$($nesting,"GlobalVariableHandler"),cvasgn:$$($nesting,"ClassVariableHandler"),send:$$($nesting,"SendHandler"),csend:$$($nesting,"ConditionalSendHandler")}).$freeze()),Opal.def(self,"$on_or_asgn",$LogicalOperatorAssignment_on_and_asgn$9=function($a){var $$8,lhs=nil,$a=[].concat(Opal.to_a($a)),lhs=null==$a[0]?nil:$a[0],rhs=null==$a[1]?nil:$a[1],result=$send($$($nesting,"HANDLERS"),"fetch",[lhs.$type()],(($$8=function(){return(null==$$8.$$s?this:$$8.$$s).$error("cannot handle LHS type: "+lhs.$type())}).$$s=this,$$8.$$arity=0,$$8)).$call(lhs,rhs,"or");return this.$process(result)},$LogicalOperatorAssignment_on_and_asgn$9.$$arity=1),Opal.def(self,"$on_and_asgn",$LogicalOperatorAssignment_on_and_asgn$9=function($a){var $$10,lhs=nil,$a=[].concat(Opal.to_a($a)),lhs=null==$a[0]?nil:$a[0],rhs=null==$a[1]?nil:$a[1],result=$send($$($nesting,"HANDLERS"),"fetch",[lhs.$type()],(($$10=function(){return(null==$$10.$$s?this:$$10.$$s).$error("cannot handle LHS type: "+lhs.$type())}).$$s=this,$$10.$$arity=0,$$10)).$call(lhs,rhs,"and");return this.$process(result)},$LogicalOperatorAssignment_on_and_asgn$9.$$arity=1),Opal.const_set($nesting[0],"ASSIGNMENT_STRING_NODE",self.$s("str","assignment")),Opal.def(self,"$on_defined?",$LogicalOperatorAssignment_on_defined$ques$11=function(node){var $a=$LogicalOperatorAssignment_on_defined$ques$11.$$p,inner=nil;return $a&&($LogicalOperatorAssignment_on_defined$ques$11.$$p=null),inner=null==($a=[].concat(Opal.to_a(node)))[0]?nil:$a[0],null==$a[1]||$a[1],$truthy(["or_asgn","and_asgn"]["$include?"](inner.$type()))?$$($nesting,"ASSIGNMENT_STRING_NODE"):$send2(this,$find_super(this,"on_defined?",$LogicalOperatorAssignment_on_defined$ques$11,!1,!0),"on_defined?",[node],null)},$LogicalOperatorAssignment_on_defined$ques$11.$$arity=1),nil&&"on_defined?"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/binary_operator_assignment"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$class_variable_set=Opal.class_variable_set,$truthy=Opal.truthy,$class_variable_get=Opal.class_variable_get,$lambda=Opal.lambda,$slice=Opal.slice,$hash2=Opal.hash2,$send=Opal.send,$send2=Opal.send2,$find_super=Opal.find_super;return Opal.add_stubs(["$require","$+","$updated","$s","$[]","$==","$type","$new_temp","$freeze","$call","$fetch","$error","$process"]),self.$require("opal/rewriters/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Rewriters")].concat($nesting);return function($base,self,$BinaryOperatorAssignment_on_op_asgn$7){var $BinaryOperatorAssignment$3,$BinaryOperatorAssignment_on_defined$ques$9,self=$klass($base,self,"BinaryOperatorAssignment"),$nesting=[self].concat($BinaryOperatorAssignment_on_op_asgn$7);return 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recvr=this.$s("js_tmp",recvr_tmp),recvr_is_nil=this.$s("send",recvr,"nil?"),plain_send=lhs.$updated("send",[recvr,meth].concat(Opal.to_a(args))),plain_op_asgn=this.$s("op_asgn",plain_send,operation,rhs),this.$s("begin",cache_recvr,this.$s("if",recvr_is_nil,this.$s("nil"),plain_op_asgn))},$ConditionalSendHandler_call$6.$$arity=3)}($nesting[0],self,$nesting),Opal.const_set($nesting[0],"HANDLERS",$hash2(["lvasgn","ivasgn","casgn","gvasgn","cvasgn","send","csend"],{lvasgn:$$($nesting,"LocalVariableHandler"),ivasgn:$$($nesting,"InstanceVariableHandler"),casgn:$$($nesting,"ConstantHandler"),gvasgn:$$($nesting,"GlobalVariableHandler"),cvasgn:$$($nesting,"ClassVariableHandler"),send:$$($nesting,"SendHandler"),csend:$$($nesting,"ConditionalSendHandler")}).$freeze()),Opal.def(self,"$on_op_asgn",$BinaryOperatorAssignment_on_op_asgn$7=function($a){var $$8,lhs=nil,$a=[].concat(Opal.to_a($a)),lhs=null==$a[0]?nil:$a[0],op=null==$a[1]?nil:$a[1],rhs=null==$a[2]?nil:$a[2],result=$send($$($nesting,"HANDLERS"),"fetch",[lhs.$type()],(($$8=function(){return(null==$$8.$$s?this:$$8.$$s).$error("cannot handle LHS type: "+lhs.$type())}).$$s=this,$$8.$$arity=0,$$8)).$call(lhs,op,rhs);return this.$process(result)},$BinaryOperatorAssignment_on_op_asgn$7.$$arity=1),Opal.const_set($nesting[0],"ASSIGNMENT_STRING_NODE",self.$s("str","assignment")),Opal.def(self,"$on_defined?",$BinaryOperatorAssignment_on_defined$ques$9=function(node){var $a=$BinaryOperatorAssignment_on_defined$ques$9.$$p,inner=nil;return $a&&($BinaryOperatorAssignment_on_defined$ques$9.$$p=null),inner=null==($a=[].concat(Opal.to_a(node)))[0]?nil:$a[0],null==$a[1]||$a[1],inner.$type()["$=="]("op_asgn")?$$($nesting,"ASSIGNMENT_STRING_NODE"):$send2(this,$find_super(this,"on_defined?",$BinaryOperatorAssignment_on_defined$ques$9,!1,!0),"on_defined?",[node],null)},$BinaryOperatorAssignment_on_defined$ques$9.$$arity=1),nil&&"on_defined?"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/hashes/key_duplicates_rewriter"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$truthy=Opal.truthy;return Opal.add_stubs(["$require","$new","$include?","$type","$<<","$==","$process_regular_node","$updated","$inspect","$warn"]),self.$require("opal/rewriters/base"),self.$require("set"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Rewriters")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Hashes")].concat($nesting);return function($base,$KeyDuplicatesRewriter_on_kwsplat$4,$KeyDuplicatesRewriter_initialize$1){var $KeyDuplicatesRewriter_on_hash$2,$KeyDuplicatesRewriter_on_pair$3,$KeyDuplicatesRewriter_on_kwsplat$4=$klass($base,$KeyDuplicatesRewriter_on_kwsplat$4,"KeyDuplicatesRewriter"),$nesting=[$KeyDuplicatesRewriter_on_kwsplat$4].concat($KeyDuplicatesRewriter_initialize$1);return $KeyDuplicatesRewriter_on_kwsplat$4.$$prototype.keys=nil,Opal.def($KeyDuplicatesRewriter_on_kwsplat$4,"$initialize",$KeyDuplicatesRewriter_initialize$1=function(){return this.keys=$$($nesting,"UniqKeysSet").$new()},$KeyDuplicatesRewriter_initialize$1.$$arity=0),Opal.def($KeyDuplicatesRewriter_on_kwsplat$4,"$on_hash",$KeyDuplicatesRewriter_on_hash$2=function(node){var $a,$iter=$KeyDuplicatesRewriter_on_hash$2.$$p,self=this,previous_keys=nil;return $iter&&($KeyDuplicatesRewriter_on_hash$2.$$p=null),function(){try{return $a=[self.keys,$$($nesting,"UniqKeysSet").$new()],previous_keys=$a[0],self.keys=$a[1],$send2(self,$find_super(self,"on_hash",$KeyDuplicatesRewriter_on_hash$2,!1,!0),"on_hash",[node],null)}finally{self.keys=previous_keys}}()},$KeyDuplicatesRewriter_on_hash$2.$$arity=1),Opal.def($KeyDuplicatesRewriter_on_kwsplat$4,"$on_pair",$KeyDuplicatesRewriter_on_pair$3=function(node){var $a=$KeyDuplicatesRewriter_on_pair$3.$$p,key=nil;return $a&&($KeyDuplicatesRewriter_on_pair$3.$$p=null),key=null==($a=[].concat(Opal.to_a(node)))[0]?nil:$a[0],null==$a[1]||$a[1],$truthy(["str","sym"]["$include?"](key.$type()))&&this.keys["$<<"](key),$send2(this,$find_super(this,"on_pair",$KeyDuplicatesRewriter_on_pair$3,!1,!0),"on_pair",[node],null)},$KeyDuplicatesRewriter_on_pair$3.$$arity=1),Opal.def($KeyDuplicatesRewriter_on_kwsplat$4,"$on_kwsplat",$KeyDuplicatesRewriter_on_kwsplat$4=function(node){var hash=nil,$a=[].concat(Opal.to_a(node)),hash=null==$a[0]?nil:$a[0];null==$a[1]||$a[1];return hash.$type()["$=="]("hash")&&(hash=this.$process_regular_node(hash)),node.$updated(nil,[hash])},$KeyDuplicatesRewriter_on_kwsplat$4.$$arity=1),function($UniqKeysSet_$lt$lt$6,$UniqKeysSet_initialize$5){var $UniqKeysSet_$lt$lt$6=$klass($UniqKeysSet_$lt$lt$6,null,"UniqKeysSet"),$nesting=[$UniqKeysSet_$lt$lt$6].concat($UniqKeysSet_initialize$5);return $UniqKeysSet_$lt$lt$6.$$prototype.set=nil,Opal.def($UniqKeysSet_$lt$lt$6,"$initialize",$UniqKeysSet_initialize$5=function(){return this.set=$$($nesting,"Set").$new()},$UniqKeysSet_initialize$5.$$arity=0),Opal.def($UniqKeysSet_$lt$lt$6,"$<<",$UniqKeysSet_$lt$lt$6=function(element){var $a,key=nil;return $truthy(this.set["$include?"](element))?($a=[].concat(Opal.to_a(element)),key=null==$a[0]?nil:$a[0],null==$a[1]||$a[1],key=element.$type()["$=="]("str")?key.$inspect():":"+key,$$($nesting,"Kernel").$warn("warning: key "+key+" is duplicated and overwritten")):this.set["$<<"](element)},$UniqKeysSet_$lt$lt$6.$$arity=1),nil&&"<<"}($nesting[0],$nesting)}($nesting[0],$$$($$$($$$("::","Opal"),"Rewriters"),"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/dump_args"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$hash2=Opal.hash2;return Opal.add_stubs(["$require","$updated"]),self.$require("opal/rewriters/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Rewriters")].concat($nesting);return function($base,self,$parent_nesting){var $DumpArgs_on_def$1,$DumpArgs_on_defs$2,$DumpArgs_on_iter$3,self=$klass($base,self,"DumpArgs");[self].concat($parent_nesting);return Opal.def(self,"$on_def",$DumpArgs_on_def$1=function(node){var args,$a=$DumpArgs_on_def$1.$$p;return $a&&($DumpArgs_on_def$1.$$p=null),node=$send2(this,$find_super(this,"on_def",$DumpArgs_on_def$1,!1,!0),"on_def",[node],null),null==($a=[].concat(Opal.to_a(node)))[0]||$a[0],args=null==$a[1]?nil:$a[1],null==$a[2]||$a[2],node.$updated(nil,nil,$hash2(["meta"],{meta:$hash2(["original_args"],{original_args:args})}))},$DumpArgs_on_def$1.$$arity=1),Opal.def(self,"$on_defs",$DumpArgs_on_defs$2=function(node){var args,$a=$DumpArgs_on_defs$2.$$p;return $a&&($DumpArgs_on_defs$2.$$p=null),node=$send2(this,$find_super(this,"on_defs",$DumpArgs_on_defs$2,!1,!0),"on_defs",[node],null),null==($a=[].concat(Opal.to_a(node)))[0]||$a[0],null==$a[1]||$a[1],args=null==$a[2]?nil:$a[2],null==$a[3]||$a[3],node.$updated(nil,nil,$hash2(["meta"],{meta:$hash2(["original_args"],{original_args:args})}))},$DumpArgs_on_defs$2.$$arity=1),Opal.def(self,"$on_iter",$DumpArgs_on_iter$3=function(node){var args,$a=$DumpArgs_on_iter$3.$$p;return $a&&($DumpArgs_on_iter$3.$$p=null),node=$send2(this,$find_super(this,"on_iter",$DumpArgs_on_iter$3,!1,!0),"on_iter",[node],null),args=null==($a=[].concat(Opal.to_a(node)))[0]?nil:$a[0],null==$a[1]||$a[1],node.$updated(nil,nil,$hash2(["meta"],{meta:$hash2(["original_args"],{original_args:args})}))},$DumpArgs_on_iter$3.$$arity=1),nil&&"on_iter"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/mlhs_args"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$truthy=Opal.truthy,$send=Opal.send,$hash2=Opal.hash2;return Opal.add_stubs(["$require","$new","$updated","$rewritten","$initialization","$s","$prepend_to_body","$attr_reader","$split!","$+","$each","$children","$==","$type","$new_mlhs_tmp","$process","$<<","$length","$[]","$empty?"]),self.$require("opal/rewriters/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Rewriters")].concat($nesting);return function($base,self,$parent_nesting){var $MlhsArgs_on_def$1,$MlhsArgs_on_defs$2,$MlhsArgs_on_iter$3,self=$klass($base,self,"MlhsArgs"),$nesting=[self].concat($parent_nesting);return Opal.def(self,"$on_def",$MlhsArgs_on_def$1=function(node){var mid,$a=$MlhsArgs_on_def$1.$$p,self=this,args=nil,body=nil,arguments$=nil,$ret_or_1=nil;return $a&&($MlhsArgs_on_def$1.$$p=null),node=$send2(self,$find_super(self,"on_def",$MlhsArgs_on_def$1,!1,!0),"on_def",[node],null),mid=null==($a=[].concat(Opal.to_a(node)))[0]?nil:$a[0],args=null==$a[1]?nil:$a[1],body=null==$a[2]?nil:$a[2],arguments$=$$($nesting,"Arguments").$new(args),args=args.$updated(nil,arguments$.$rewritten()),$truthy(arguments$.$initialization())&&(body=$truthy($ret_or_1=body)?$ret_or_1:self.$s("nil"),body=self.$prepend_to_body(body,arguments$.$initialization())),node.$updated(nil,[mid,args,body])},$MlhsArgs_on_def$1.$$arity=1),Opal.def(self,"$on_defs",$MlhsArgs_on_defs$2=function(node){var recv,mid,$a=$MlhsArgs_on_defs$2.$$p,self=this,args=nil,body=nil,arguments$=nil,$ret_or_2=nil;return $a&&($MlhsArgs_on_defs$2.$$p=null),node=$send2(self,$find_super(self,"on_defs",$MlhsArgs_on_defs$2,!1,!0),"on_defs",[node],null),recv=null==($a=[].concat(Opal.to_a(node)))[0]?nil:$a[0],mid=null==$a[1]?nil:$a[1],args=null==$a[2]?nil:$a[2],body=null==$a[3]?nil:$a[3],arguments$=$$($nesting,"Arguments").$new(args),args=args.$updated(nil,arguments$.$rewritten()),$truthy(arguments$.$initialization())&&(body=$truthy($ret_or_2=body)?$ret_or_2:self.$s("nil"),body=self.$prepend_to_body(body,arguments$.$initialization())),node.$updated(nil,[recv,mid,args,body])},$MlhsArgs_on_defs$2.$$arity=1),Opal.def(self,"$on_iter",$MlhsArgs_on_iter$3=function(node){var $a=$MlhsArgs_on_iter$3.$$p,self=this,args=nil,body=nil,arguments$=nil,$ret_or_3=nil;return $a&&($MlhsArgs_on_iter$3.$$p=null),node=$send2(self,$find_super(self,"on_iter",$MlhsArgs_on_iter$3,!1,!0),"on_iter",[node],null),args=null==($a=[].concat(Opal.to_a(node)))[0]?nil:$a[0],body=null==$a[1]?nil:$a[1],arguments$=$$($nesting,"Arguments").$new(args),args=args.$updated(nil,arguments$.$rewritten()),$truthy(arguments$.$initialization())&&(body=$truthy($ret_or_3=body)?$ret_or_3:self.$s("nil"),body=self.$prepend_to_body(body,arguments$.$initialization())),node.$updated(nil,[args,body])},$MlhsArgs_on_iter$3.$$arity=1),function($base,$Arguments_split$excl$7,$Arguments_new_mlhs_tmp$6){var $nesting=[$Arguments_split$excl$7=$klass($base,$Arguments_split$excl$7,"Arguments")].concat($Arguments_new_mlhs_tmp$6);$Arguments_split$excl$7.$$prototype.counter=$Arguments_split$excl$7.$$prototype.args=$Arguments_split$excl$7.$$prototype.initialization=nil,$Arguments_split$excl$7.$attr_reader("rewritten","initialization"),Opal.def($Arguments_split$excl$7,"$initialize",$Arguments_new_mlhs_tmp$6=function(args){return this.args=args,this.rewritten=[],this.initialization=[],this.rewriter=$$($nesting,"MlhsRewriter").$new(),this["$split!"]()},$Arguments_new_mlhs_tmp$6.$$arity=1),Opal.def($Arguments_split$excl$7,"$reset_tmp_counter!",$Arguments_new_mlhs_tmp$6=function(){return this.counter=0},$Arguments_new_mlhs_tmp$6.$$arity=0),Opal.def($Arguments_split$excl$7,"$new_mlhs_tmp",$Arguments_new_mlhs_tmp$6=function(){var lhs,self=this,rhs=nil;return self.counter=$truthy(rhs=self.counter)?rhs:0,self.counter=(lhs=self.counter,rhs=1,"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)),"$mlhs_tmp"+self.counter},$Arguments_new_mlhs_tmp$6.$$arity=0),Opal.def($Arguments_split$excl$7,"$split!",$Arguments_split$excl$7=function(){var $$8;return $send(this.args.$children(),"each",[],(($$8=function(arg){var var_name,rhs,mlhs,self=null==$$8.$$s?this:$$8.$$s;return null==self.rewriter&&(self.rewriter=nil),null==self.initialization&&(self.initialization=nil),null==self.rewritten&&(self.rewritten=nil),null==arg&&(arg=nil),arg.$type()["$=="]("mlhs")?(var_name=self.$new_mlhs_tmp(),rhs=self.$s("lvar",var_name),mlhs=self.rewriter.$process(arg),self.initialization["$<<"](self.$s("masgn",mlhs,rhs)),self.rewritten["$<<"](self.$s("arg",var_name).$updated(nil,nil,$hash2(["meta"],{meta:$hash2(["arg_name"],{arg_name:var_name})})))):self.rewritten["$<<"](arg)}).$$s=this,$$8.$$arity=1,$$8)),this.initialization.$length()["$=="](1)?this.initialization=this.initialization["$[]"](0):$truthy(this.initialization["$empty?"]())?this.initialization=nil:this.initialization=$send(this,"s",["begin"].concat(Opal.to_a(this.initialization)))},$Arguments_split$excl$7.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$MlhsRewriter_on_restarg$10,$MlhsRewriter_on_arg$9){$MlhsRewriter_on_restarg$10=$klass($base,$MlhsRewriter_on_restarg$10,"MlhsRewriter"),[$MlhsRewriter_on_restarg$10].concat($MlhsRewriter_on_arg$9);return Opal.def($MlhsRewriter_on_restarg$10,"$on_arg",$MlhsRewriter_on_arg$9=function(node){return node.$updated("lvasgn")},$MlhsRewriter_on_arg$9.$$arity=1),Opal.def($MlhsRewriter_on_restarg$10,"$on_restarg",$MlhsRewriter_on_restarg$10=function(node){var name=node.$children()["$[]"](0);return $truthy(name)?this.$s("splat",node.$updated("lvasgn")):this.$s("splat")},$MlhsRewriter_on_restarg$10.$$arity=1),nil&&"on_restarg"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/arguments"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$module=(Opal.$$$,Opal.$$,Opal.module),$klass=Opal.klass,$send=Opal.send,$truthy=Opal.truthy;return Opal.add_stubs(["$attr_reader","$each","$type","$===","$<<","$any?","$raise","$!","$nil?","$has_any_kwargs?","$can_inline_kwargs?","$empty?"]),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Rewriters")].concat($nesting);return function($Arguments_can_inline_kwargs$ques$5,$Arguments_has_any_kwargs$ques$4){$Arguments_can_inline_kwargs$ques$5=$klass($Arguments_can_inline_kwargs$ques$5,null,"Arguments"),[$Arguments_can_inline_kwargs$ques$5].concat($Arguments_has_any_kwargs$ques$4);return $Arguments_can_inline_kwargs$ques$5.$$prototype.restarg=$Arguments_can_inline_kwargs$ques$5.$$prototype.postargs=$Arguments_can_inline_kwargs$ques$5.$$prototype.kwargs=$Arguments_can_inline_kwargs$ques$5.$$prototype.kwoptargs=$Arguments_can_inline_kwargs$ques$5.$$prototype.kwrestarg=$Arguments_can_inline_kwargs$ques$5.$$prototype.optargs=nil,$Arguments_can_inline_kwargs$ques$5.$attr_reader("args","optargs","restarg","postargs","kwargs","kwoptargs","kwrestarg","kwnilarg","shadowargs","blockarg"),Opal.def($Arguments_can_inline_kwargs$ques$5,"$initialize",$Arguments_has_any_kwargs$ques$4=function(args){var $$2;return this.args=[],this.optargs=[],this.restarg=nil,this.postargs=[],this.kwargs=[],this.kwoptargs=[],this.kwrestarg=nil,this.kwnilarg=!1,this.shadowargs=[],this.blockarg=nil,$send(args,"each",[],(($$2=function(arg){var self=null==$$2.$$s?this:$$2.$$s,$case=nil,$ret_or_1=nil;return null==self.restarg&&(self.restarg=nil),null==self.optargs&&(self.optargs=nil),null==self.postargs&&(self.postargs=nil),null==self.args&&(self.args=nil),null==self.kwargs&&(self.kwargs=nil),null==self.kwoptargs&&(self.kwoptargs=nil),null==self.shadowargs&&(self.shadowargs=nil),null==arg&&(arg=nil),$case=arg.$type(),"arg"["$==="]($case)||"mlhs"["$==="]($case)?($truthy($truthy($ret_or_1=self.restarg)?$ret_or_1:self.optargs["$any?"]())?self.postargs:self.args)["$<<"](arg):"optarg"["$==="]($case)?self.optargs["$<<"](arg):"restarg"["$==="]($case)?self.restarg=arg:"kwarg"["$==="]($case)?self.kwargs["$<<"](arg):"kwoptarg"["$==="]($case)?self.kwoptargs["$<<"](arg):"kwnilarg"["$==="]($case)?self.kwnilarg=!0:"kwrestarg"["$==="]($case)?self.kwrestarg=arg:"shadowarg"["$==="]($case)?self.shadowargs["$<<"](arg):"blockarg"["$==="]($case)?self.blockarg=arg:self.$raise("Unsupported arg type "+arg.$type())}).$$s=this,$$2.$$arity=1,$$2))},$Arguments_has_any_kwargs$ques$4.$$arity=1),Opal.def($Arguments_can_inline_kwargs$ques$5,"$has_post_args?",$Arguments_has_any_kwargs$ques$4=function(){var $ret_or_2,$ret_or_4,self=this,$ret_or_3=nil;return $truthy($ret_or_2=$truthy($ret_or_3=self.restarg["$nil?"]()["$!"]())?$ret_or_3:self.postargs["$any?"]())?$ret_or_2:$truthy($ret_or_4=self["$has_any_kwargs?"]())?self["$can_inline_kwargs?"]()["$!"]():$ret_or_4},$Arguments_has_any_kwargs$ques$4.$$arity=0),Opal.def($Arguments_can_inline_kwargs$ques$5,"$has_any_kwargs?",$Arguments_has_any_kwargs$ques$4=function(){var $ret_or_5,self=this,$ret_or_6=nil;return $truthy($ret_or_5=$truthy($ret_or_6=self.kwargs["$any?"]())?$ret_or_6:self.kwoptargs["$any?"]())?$ret_or_5:self.kwrestarg["$nil?"]()["$!"]()},$Arguments_has_any_kwargs$ques$4.$$arity=0),Opal.def($Arguments_can_inline_kwargs$ques$5,"$can_inline_kwargs?",$Arguments_can_inline_kwargs$ques$5=function(){var $ret_or_7,self=this,$ret_or_8=nil;return $truthy($ret_or_7=$truthy($ret_or_8=self.optargs["$empty?"]())?self.restarg["$nil?"]():$ret_or_8)?self.postargs["$empty?"]():$ret_or_7},$Arguments_can_inline_kwargs$ques$5.$$arity=0),nil&&"can_inline_kwargs?"}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/inline_args"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$truthy=Opal.truthy,$hash2=Opal.hash2,$send=Opal.send;return Opal.add_stubs(["$require","$s","$new","$updated","$inline","$prepend_to_body","$initialization","$attr_reader","$freeze","$children","$each","$send","$any?","$blockarg","$<<","$shadowargs","$args","$==","$[]","$has_post_args?","$length","$has_any_kwargs?","$can_inline_kwargs?","$kwargs","$kwoptargs","$kwrestarg","$postargs","$optargs","$args_to_keep","$restarg"]),self.$require("opal/rewriters/base"),self.$require("opal/rewriters/arguments"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Rewriters")].concat($nesting);return function($base,self,$parent_nesting){var $InlineArgs_on_def$1,$InlineArgs_on_defs$2,$InlineArgs_on_iter$3,self=$klass($base,self,"InlineArgs"),$nesting=[self].concat($parent_nesting);return Opal.def(self,"$on_def",$InlineArgs_on_def$1=function(node){var mid,inline_args,$a=$InlineArgs_on_def$1.$$p,self=this,args=nil,body=nil,$ret_or_1=nil,initializer=nil;return $a&&($InlineArgs_on_def$1.$$p=null),node=$send2(self,$find_super(self,"on_def",$InlineArgs_on_def$1,!1,!0),"on_def",[node],null),mid=null==($a=[].concat(Opal.to_a(node)))[0]?nil:$a[0],args=null==$a[1]?nil:$a[1],body=null==$a[2]?nil:$a[2],body=$truthy($ret_or_1=body)?$ret_or_1:self.$s("nil"),initializer=$$($nesting,"Initializer").$new(args,$hash2(["type"],{type:"def"})),inline_args=args.$updated(nil,initializer.$inline()),body=self.$prepend_to_body(body,initializer.$initialization()),node.$updated(nil,[mid,inline_args,body])},$InlineArgs_on_def$1.$$arity=1),Opal.def(self,"$on_defs",$InlineArgs_on_defs$2=function(node){var recv,mid,inline_args,$a=$InlineArgs_on_defs$2.$$p,self=this,args=nil,body=nil,$ret_or_2=nil,initializer=nil;return $a&&($InlineArgs_on_defs$2.$$p=null),node=$send2(self,$find_super(self,"on_defs",$InlineArgs_on_defs$2,!1,!0),"on_defs",[node],null),recv=null==($a=[].concat(Opal.to_a(node)))[0]?nil:$a[0],mid=null==$a[1]?nil:$a[1],args=null==$a[2]?nil:$a[2],body=null==$a[3]?nil:$a[3],body=$truthy($ret_or_2=body)?$ret_or_2:self.$s("nil"),initializer=$$($nesting,"Initializer").$new(args,$hash2(["type"],{type:"defs"})),inline_args=args.$updated(nil,initializer.$inline()),body=self.$prepend_to_body(body,initializer.$initialization()),node.$updated(nil,[recv,mid,inline_args,body])},$InlineArgs_on_defs$2.$$arity=1),Opal.def(self,"$on_iter",$InlineArgs_on_iter$3=function(node){var inline_args,$a=$InlineArgs_on_iter$3.$$p,self=this,args=nil,body=nil,$ret_or_3=nil,initializer=nil;return $a&&($InlineArgs_on_iter$3.$$p=null),node=$send2(self,$find_super(self,"on_iter",$InlineArgs_on_iter$3,!1,!0),"on_iter",[node],null),args=null==($a=[].concat(Opal.to_a(node)))[0]?nil:$a[0],body=null==$a[1]?nil:$a[1],body=$truthy($ret_or_3=body)?$ret_or_3:self.$s("nil"),initializer=$$($nesting,"Initializer").$new(args,$hash2(["type"],{type:"iter"})),inline_args=args.$updated(nil,initializer.$inline()),body=self.$prepend_to_body(body,initializer.$initialization()),node.$updated(nil,[inline_args,body])},$InlineArgs_on_iter$3.$$arity=1),function($base,$Initializer_args_to_keep$23,$Initializer_extract_restarg$22){var $Initializer_args_to_keep$23=$klass($base,$Initializer_args_to_keep$23,"Initializer"),$nesting=[$Initializer_args_to_keep$23].concat($Initializer_extract_restarg$22);return $Initializer_args_to_keep$23.$$prototype.initialization=$Initializer_args_to_keep$23.$$prototype.args=$Initializer_args_to_keep$23.$$prototype.inline=nil,$Initializer_args_to_keep$23.$attr_reader("inline","initialization"),Opal.const_set($nesting[0],"STEPS",["extract_blockarg","initialize_shadowargs","extract_args","prepare_post_args","prepare_kwargs","extract_optargs","extract_restarg","extract_post_args","extract_kwargs","extract_kwoptargs","extract_kwrestarg"].$freeze()),Opal.def($Initializer_args_to_keep$23,"$initialize",$Initializer_extract_restarg$22=function(args,type){var $$5;if(null==type)type=$hash2([],{});else if(!type.$$is_hash)throw Opal.ArgumentError.$new("expected kwargs");if(!Opal.hasOwnProperty.call(type.$$smap,"type"))throw Opal.ArgumentError.$new("missing keyword: type");return type=type.$$smap.type,this.args=$$($nesting,"Arguments").$new(args.$children()),this.inline=[],this.initialization=[],this.type=type,this.underscore_found=!1,$send($$($nesting,"STEPS"),"each",[],(($$5=function(step){var self=null==$$5.$$s?this:$$5.$$s;return null==step&&(step=nil),self.$send(step)}).$$s=this,$$5.$$arity=1,$$5)),$truthy(this.initialization["$any?"]())?this.initialization=$send(this,"s",["begin"].concat(Opal.to_a(this.initialization))):this.initialization=nil},$Initializer_extract_restarg$22.$$arity=2),Opal.def($Initializer_args_to_keep$23,"$extract_blockarg",$Initializer_extract_restarg$22=function(){var arg=nil;return $truthy(arg=this.args.$blockarg())?this.initialization["$<<"](arg.$updated("extract_blockarg")):nil},$Initializer_extract_restarg$22.$$arity=0),Opal.def($Initializer_args_to_keep$23,"$initialize_shadowargs",$Initializer_extract_restarg$22=function(){var $$8;return $send(this.args.$shadowargs(),"each",[],(($$8=function(arg){var self=null==$$8.$$s?this:$$8.$$s;return null==self.initialization&&(self.initialization=nil),null==arg&&(arg=nil),self.initialization["$<<"](arg.$updated("initialize_shadowarg"))}).$$s=this,$$8.$$arity=1,$$8))},$Initializer_extract_restarg$22.$$arity=0),Opal.def($Initializer_args_to_keep$23,"$extract_args",$Initializer_extract_restarg$22=function(){var $$10;return $send(this.args.$args(),"each",[],(($$10=function(arg){var self=null==$$10.$$s?this:$$10.$$s;return null==self.type&&(self.type=nil),null==self.initialization&&(self.initialization=nil),null==self.underscore_found&&(self.underscore_found=nil),null==self.inline&&(self.inline=nil),null==arg&&(arg=nil),self.type["$=="]("iter")&&(self.initialization["$<<"](arg.$updated("initialize_iter_arg")),arg.$children()["$[]"](0)["$=="]("_")&&($truthy(self.underscore_found)&&(arg=self.$s("fake_arg")),self.underscore_found=!0)),self.inline["$<<"](arg)}).$$s=this,$$10.$$arity=1,$$10))},$Initializer_extract_restarg$22.$$arity=0),Opal.def($Initializer_args_to_keep$23,"$prepare_post_args",$Initializer_extract_restarg$22=function(){return $truthy(this.args["$has_post_args?"]())?this.initialization["$<<"](this.$s("prepare_post_args",this.args.$args().$length())):nil},$Initializer_extract_restarg$22.$$arity=0),Opal.def($Initializer_args_to_keep$23,"$prepare_kwargs",$Initializer_extract_restarg$22=function(){return $truthy(this.args["$has_any_kwargs?"]())?($truthy(this.args["$can_inline_kwargs?"]())?this.inline["$<<"](this.$s("arg","$kwargs")):(this.initialization["$<<"](this.$s("extract_kwargs")),this.inline["$<<"](this.$s("fake_arg"))),this.initialization["$<<"](this.$s("ensure_kwargs_are_kwargs"))):nil},$Initializer_extract_restarg$22.$$arity=0),Opal.def($Initializer_args_to_keep$23,"$extract_kwargs",$Initializer_extract_restarg$22=function(){var $$14;return $send(this.args.$kwargs(),"each",[],(($$14=function(arg){var self=null==$$14.$$s?this:$$14.$$s;return null==self.initialization&&(self.initialization=nil),null==arg&&(arg=nil),self.initialization["$<<"](arg.$updated("extract_kwarg"))}).$$s=this,$$14.$$arity=1,$$14))},$Initializer_extract_restarg$22.$$arity=0),Opal.def($Initializer_args_to_keep$23,"$extract_kwoptargs",$Initializer_extract_restarg$22=function(){var $$16;return $send(this.args.$kwoptargs(),"each",[],(($$16=function(arg){var self=null==$$16.$$s?this:$$16.$$s;return null==self.initialization&&(self.initialization=nil),null==arg&&(arg=nil),self.initialization["$<<"](arg.$updated("extract_kwoptarg"))}).$$s=this,$$16.$$arity=1,$$16))},$Initializer_extract_restarg$22.$$arity=0),Opal.def($Initializer_args_to_keep$23,"$extract_kwrestarg",$Initializer_extract_restarg$22=function(){var arg=nil;return $truthy(arg=this.args.$kwrestarg())?this.initialization["$<<"](arg.$updated("extract_kwrestarg")):nil},$Initializer_extract_restarg$22.$$arity=0),Opal.def($Initializer_args_to_keep$23,"$extract_post_args",$Initializer_extract_restarg$22=function(){var $$19;return $send(this.args.$postargs(),"each",[],(($$19=function(arg){var self=null==$$19.$$s?this:$$19.$$s;return null==self.initialization&&(self.initialization=nil),null==self.inline&&(self.inline=nil),null==arg&&(arg=nil),self.initialization["$<<"](arg.$updated("extract_post_arg")),self.inline["$<<"](self.$s("fake_arg"))}).$$s=this,$$19.$$arity=1,$$19))},$Initializer_extract_restarg$22.$$arity=0),Opal.def($Initializer_args_to_keep$23,"$extract_optargs",$Initializer_extract_restarg$22=function(){var $$21,has_post_args=this.args["$has_post_args?"]();return $send(this.args.$optargs(),"each",[],(($$21=function(arg){var $a,arg_name,default_value,self=null==$$21.$$s?this:$$21.$$s;return null==self.initialization&&(self.initialization=nil),null==self.inline&&(self.inline=nil),null==arg&&(arg=nil),$truthy(has_post_args)?(arg_name=null==($a=[].concat(Opal.to_a(arg)))[0]?nil:$a[0],default_value=null==$a[1]?nil:$a[1],self.initialization["$<<"](arg.$updated("extract_post_optarg",[arg_name,default_value,self.$args_to_keep()])),self.inline["$<<"](self.$s("fake_arg"))):(self.inline["$<<"](arg.$updated("arg")),self.initialization["$<<"](arg.$updated("extract_optarg")))}).$$s=this,$$21.$$arity=1,$$21))},$Initializer_extract_restarg$22.$$arity=0),Opal.def($Initializer_args_to_keep$23,"$extract_restarg",$Initializer_extract_restarg$22=function(){var arg_name,arg=nil;return $truthy(arg=this.args.$restarg())?(arg_name=arg.$children()["$[]"](0),this.initialization["$<<"](arg.$updated("extract_restarg",[arg_name,this.$args_to_keep()])),this.inline["$<<"](this.$s("fake_arg"))):nil},$Initializer_extract_restarg$22.$$arity=0),Opal.def($Initializer_args_to_keep$23,"$args_to_keep",$Initializer_args_to_keep$23=function(){return this.args.$postargs().$length()},$Initializer_args_to_keep$23.$$arity=0),nil&&"args_to_keep"}($nesting[0],$$$($$$($$$("::","Opal"),"Rewriters"),"Base"),$nesting)}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/numblocks"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send=Opal.send;return Opal.add_stubs(["$require","$children","$s","$gen_args","$map"]),self.$require("opal/rewriters/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Rewriters")].concat($nesting);return function($base,$Numblocks_gen_args$2,$Numblocks_on_numblock$1){$Numblocks_gen_args$2=$klass($base,$Numblocks_gen_args$2,"Numblocks"),[$Numblocks_gen_args$2].concat($Numblocks_on_numblock$1);return Opal.def($Numblocks_gen_args$2,"$on_numblock",$Numblocks_on_numblock$1=function($a){var $a=$a.$children(),$a=Opal.to_ary($a),left=null==$a[0]?nil:$a[0],arg_count=null==$a[1]?nil:$a[1],right=null==$a[2]?nil:$a[2];return this.$s("block",left,$send(this,"s",["args"].concat(Opal.to_a(this.$gen_args(arg_count)))),right)},$Numblocks_on_numblock$1.$$arity=1),Opal.def($Numblocks_gen_args$2,"$gen_args",$Numblocks_gen_args$2=function(arg_count){var $$3;return $send(Opal.Range.$new(1,arg_count,!1),"map",[],(($$3=function(i){var self=null==$$3.$$s?this:$$3.$$s;return null==i&&(i=nil),self.$s("arg","_"+i)}).$$s=this,$$3.$$arity=1,$$3))},$Numblocks_gen_args$2.$$arity=1),nil&&"gen_args"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/returnable_logic"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy;return Opal.add_stubs(["$require","$+","$children","$next_tmp","$updated","$s","$process"]),self.$require("opal/rewriters/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Rewriters")].concat($nesting);return function($base,$ReturnableLogic_on_and$4,$ReturnableLogic_on_or$3){$ReturnableLogic_on_and$4=$klass($base,$ReturnableLogic_on_and$4,"ReturnableLogic"),[$ReturnableLogic_on_and$4].concat($ReturnableLogic_on_or$3);return $ReturnableLogic_on_and$4.$$prototype.counter=nil,Opal.def($ReturnableLogic_on_and$4,"$next_tmp",$ReturnableLogic_on_or$3=function(){var lhs,self=this,rhs=nil;return self.counter=$truthy(rhs=self.counter)?rhs:0,self.counter=(lhs=self.counter,rhs=1,"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)),"$ret_or_"+self.counter},$ReturnableLogic_on_or$3.$$arity=0),Opal.def($ReturnableLogic_on_and$4,"$reset_tmp_counter!",$ReturnableLogic_on_or$3=function(){return this.counter=nil},$ReturnableLogic_on_or$3.$$arity=0),Opal.def($ReturnableLogic_on_and$4,"$on_or",$ReturnableLogic_on_or$3=function(node){var $a=[].concat(Opal.to_a(node.$children())),lhs=null==$a[0]?nil:$a[0],rhs=null==$a[1]?nil:$a[1],lhs_tmp=this.$next_tmp();return node.$updated("if",[this.$s("lvasgn",lhs_tmp,this.$process(lhs)),this.$s("js_tmp",lhs_tmp),this.$process(rhs)])},$ReturnableLogic_on_or$3.$$arity=1),Opal.def($ReturnableLogic_on_and$4,"$on_and",$ReturnableLogic_on_and$4=function(node){var $a=[].concat(Opal.to_a(node.$children())),lhs=null==$a[0]?nil:$a[0],rhs=null==$a[1]?nil:$a[1],lhs_tmp=this.$next_tmp();return node.$updated("if",[this.$s("lvasgn",lhs_tmp,this.$process(lhs)),this.$process(rhs),this.$s("js_tmp",lhs_tmp)])},$ReturnableLogic_on_and$4.$$arity=1),nil&&"on_and"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/forward_args"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$range=Opal.range,$send2=Opal.send2,$find_super=Opal.find_super;return Opal.add_stubs(["$require","$process","$s","$last","$children","$==","$type","$[]","$updated","$!=","$class"]),self.$require("opal/rewriters/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Rewriters")].concat($nesting);return function($base,self,$ForwardArgs_on_forward_args$1){var $ForwardArgs_on_args$2,$ForwardArgs_on_send$3,self=$klass($base,self,"ForwardArgs"),$nesting=[self].concat($ForwardArgs_on_forward_args$1);return Opal.def(self,"$on_forward_args",$ForwardArgs_on_forward_args$1=function(){return this.$process(this.$s("args",this.$s("forward_arg","$")))},$ForwardArgs_on_forward_args$1.$$arity=1),Opal.def(self,"$on_args",$ForwardArgs_on_args$2=function(node){var prev_children,$zuper_ii,$iter=$ForwardArgs_on_args$2.$$p,$ret_or_1=nil,$zuper=nil,$zuper_i=nil;for($iter&&($ForwardArgs_on_args$2.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return $truthy($truthy($ret_or_1=node.$children().$last())?node.$children().$last().$type()["$=="]("forward_arg"):$ret_or_1)?(prev_children=node.$children()["$[]"]($range(0,-2,!1)),node.$updated(nil,[].concat(Opal.to_a(prev_children)).concat([this.$s("restarg","$fwd_rest"),this.$s("blockarg","$fwd_block")]))):$send2(this,$find_super(this,"on_args",$ForwardArgs_on_args$2,!1,!0),"on_args",$zuper,$iter)},$ForwardArgs_on_args$2.$$arity=1),Opal.def(self,"$on_send",$ForwardArgs_on_send$3=function(node){var prev_children,$zuper_ii,$iter=$ForwardArgs_on_send$3.$$p,$ret_or_2=nil,$ret_or_3=nil,$zuper=nil,$zuper_i=nil;for($iter&&($ForwardArgs_on_send$3.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return $truthy($truthy($ret_or_2=$truthy($ret_or_3=node.$children().$last())?node.$children().$last().$class()["$!="]($$($nesting,"Symbol")):$ret_or_3)?node.$children().$last().$type()["$=="]("forwarded_args"):$ret_or_2)?(prev_children=node.$children()["$[]"]($range(0,-2,!1)),node.$updated(nil,[].concat(Opal.to_a(prev_children)).concat([this.$s("splat",this.$s("lvar","$fwd_rest")),this.$s("block_pass",this.$s("lvar","$fwd_block"))]))):$send2(this,$find_super(this,"on_send",$ForwardArgs_on_send$3,!1,!0),"on_send",$zuper,$iter)},$ForwardArgs_on_send$3.$$arity=1),nil&&"on_send"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriter"]=function(Opal){var $Rewriter_process$7,$disable$4,$delete$3=Opal.top,$disabled$ques$5=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$Rewriter_initialize$6=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send;return Opal.add_stubs(["$require","$<<","$list","$delete","$use","$disabled?","$class","$each","$new","$process"]),$delete$3.$require("opal/rewriters/opal_engine_check"),$delete$3.$require("opal/rewriters/for_rewriter"),$delete$3.$require("opal/rewriters/explicit_writer_return"),$delete$3.$require("opal/rewriters/js_reserved_words"),$delete$3.$require("opal/rewriters/block_to_iter"),$delete$3.$require("opal/rewriters/dot_js_syntax"),$delete$3.$require("opal/rewriters/pattern_matching"),$delete$3.$require("opal/rewriters/logical_operator_assignment"),$delete$3.$require("opal/rewriters/binary_operator_assignment"),$delete$3.$require("opal/rewriters/hashes/key_duplicates_rewriter"),$delete$3.$require("opal/rewriters/dump_args"),$delete$3.$require("opal/rewriters/mlhs_args"),$delete$3.$require("opal/rewriters/inline_args"),$delete$3.$require("opal/rewriters/numblocks"),$delete$3.$require("opal/rewriters/returnable_logic"),$delete$3.$require("opal/rewriters/forward_args"),$Rewriter_initialize$6=[$Rewriter_initialize$6($delete$3=($Rewriter_process$7=$disabled$ques$5)[0],"Opal")].concat($Rewriter_process$7),$disabled$ques$5=$Rewriter_initialize$6[0],$delete$3=$Rewriter_initialize$6,$Rewriter_process$7=$klass($disabled$ques$5,null,"Rewriter"),$Rewriter_initialize$6=[$Rewriter_process$7].concat($delete$3),$Rewriter_process$7.$$prototype.sexp=nil,[$disabled$ques$5=Opal.get_singleton_class($Rewriter_process$7)].concat($delete$3=$Rewriter_initialize$6),Opal.def($disabled$ques$5,"$list",$delete$3=function(){var self=this,$ret_or_1=nil;return null==self.list&&(self.list=nil),self.list=$truthy($ret_or_1=self.list)?$ret_or_1:[]},$delete$3.$$arity=0),Opal.def($disabled$ques$5,"$use",$delete$3=function(rewriter){return this.$list()["$<<"](rewriter)},$delete$3.$$arity=1),Opal.def($disabled$ques$5,"$delete",$delete$3=function(rewriter){return this.$list().$delete(rewriter)},$delete$3.$$arity=1),Opal.def($disabled$ques$5,"$disable",$disable$4=function(){var $iter=$disable$4.$$p,$yield=$iter||nil,self=this;return $iter&&($disable$4.$$p=null),function(){try{return self.disabled=!0,Opal.yieldX($yield,[])}finally{self.disabled=!1}}()},$disable$4.$$arity=0),Opal.def($disabled$ques$5,"$disabled?",$disabled$ques$5=function(){var $a;return null==this.disabled&&(this.disabled=nil),$truthy(null!=($a=this.disabled)&&$a!==nil?"instance-variable":nil)?this.disabled:nil},$disabled$ques$5.$$arity=0),$Rewriter_process$7.$use($$$($$($Rewriter_initialize$6,"Rewriters"),"OpalEngineCheck")),$Rewriter_process$7.$use($$$($$($Rewriter_initialize$6,"Rewriters"),"ForRewriter")),$Rewriter_process$7.$use($$$($$($Rewriter_initialize$6,"Rewriters"),"Numblocks")),$Rewriter_process$7.$use($$$($$($Rewriter_initialize$6,"Rewriters"),"ForwardArgs")),$Rewriter_process$7.$use($$$($$($Rewriter_initialize$6,"Rewriters"),"BlockToIter")),$Rewriter_process$7.$use($$$($$($Rewriter_initialize$6,"Rewriters"),"DotJsSyntax")),$Rewriter_process$7.$use($$$($$($Rewriter_initialize$6,"Rewriters"),"PatternMatching")),$Rewriter_process$7.$use($$$($$($Rewriter_initialize$6,"Rewriters"),"JsReservedWords")),$Rewriter_process$7.$use($$$($$($Rewriter_initialize$6,"Rewriters"),"LogicalOperatorAssignment")),$Rewriter_process$7.$use($$$($$($Rewriter_initialize$6,"Rewriters"),"BinaryOperatorAssignment")),$Rewriter_process$7.$use($$$($$($Rewriter_initialize$6,"Rewriters"),"ExplicitWriterReturn")),$Rewriter_process$7.$use($$$($$$($$($Rewriter_initialize$6,"Rewriters"),"Hashes"),"KeyDuplicatesRewriter")),$Rewriter_process$7.$use($$$($$($Rewriter_initialize$6,"Rewriters"),"ReturnableLogic")),$Rewriter_process$7.$use($$$($$($Rewriter_initialize$6,"Rewriters"),"DumpArgs")),$Rewriter_process$7.$use($$$($$($Rewriter_initialize$6,"Rewriters"),"MlhsArgs")),$Rewriter_process$7.$use($$$($$($Rewriter_initialize$6,"Rewriters"),"InlineArgs")),Opal.def($Rewriter_process$7,"$initialize",$Rewriter_initialize$6=function(sexp){return this.sexp=sexp},$Rewriter_initialize$6.$$arity=1),Opal.def($Rewriter_process$7,"$process",$Rewriter_process$7=function(){var $$8;return $truthy(this.$class()["$disabled?"]())||$send(this.$class().$list(),"each",[],(($$8=function(rewriter_class){var self=null==$$8.$$s?this:$$8.$$s,rewriter=nil;return null==self.sexp&&(self.sexp=nil),null==rewriter_class&&(rewriter_class=nil),rewriter=rewriter_class.$new(),self.sexp=rewriter.$process(self.sexp)}).$$s=this,$$8.$$arity=1,$$8)),this.sexp},$Rewriter_process$7.$$arity=0),nil&&"process"},Opal.modules["opal/parser/source_buffer"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$send2=Opal.send2,$find_super=Opal.find_super;return function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,self,$parent_nesting){var $SourceBuffer_recognize_encoding$1,self=$klass($base,self,"SourceBuffer"),$nesting=[self].concat($parent_nesting);return Opal.defs(self,"$recognize_encoding",$SourceBuffer_recognize_encoding$1=function(string){var $ret_or_1,$zuper_ii,$iter=$SourceBuffer_recognize_encoding$1.$$p,$zuper=nil,$zuper_i=nil;for($iter&&($SourceBuffer_recognize_encoding$1.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return $truthy($ret_or_1=$send2(this,$find_super(this,"recognize_encoding",$SourceBuffer_recognize_encoding$1,!1,!0),"recognize_encoding",$zuper,$iter))?$ret_or_1:$$$($$($nesting,"Encoding"),"UTF_8")},$SourceBuffer_recognize_encoding$1.$$arity=1),nil&&"recognize_encoding"}($nesting[0],$$$($$$($$$("::","Parser"),"Source"),"Buffer"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/parser/default_config"]=function(Opal){function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}Opal.top;var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$send2=Opal.send2,$find_super=Opal.find_super,$send=Opal.send,$lambda=Opal.lambda;return Opal.add_stubs(["$attr_accessor","$all_errors_are_fatal=","$diagnostics","$-","$ignore_warnings=","$diagnostics_consumer","$consumer=","$extend","$diagnostics_consumer=","$new","$rewrite","$process","$default_parser","$default_parser_class"]),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function(self,$nesting){self=$module(self,"Parser"),$nesting=[self].concat($nesting);return function($DefaultConfig_rewrite$6,$DefaultConfig_included$2){var $DefaultConfig_initialize$4,$DefaultConfig_parse$5,$nesting=[$DefaultConfig_rewrite$6=$module($DefaultConfig_rewrite$6,"DefaultConfig")].concat($DefaultConfig_included$2);(function(self,$parent_nesting){var 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$truthy(null!=($a=this.fragments)&&$a!==nil?"instance-variable":nil)||(this.fragments=[],this.$compile()),this.fragments},$Base_comments$46.$$arity=0),Opal.def($Base_source_location$47,"$compile",$Base_comments$46=function(){return this.$raise("Not Implemented")},$Base_comments$46.$$arity=0),Opal.def($Base_source_location$47,"$push",$Base_comments$46=function($a){var $$13,$post_args=Opal.slice.call(arguments,0,arguments.length);return $send($post_args,"each",[],(($$13=function(str){var self=null==$$13.$$s?this:$$13.$$s;return null==self.fragments&&(self.fragments=nil),null==str&&(str=nil),$truthy(str["$is_a?"]($$($nesting,"String")))&&(str=self.$fragment(str)),self.fragments["$<<"](str)}).$$s=this,$$13.$$arity=1,$$13))},$Base_comments$46.$$arity=-1),Opal.def($Base_source_location$47,"$unshift",$Base_comments$46=function($a){var $$15,$post_args=Opal.slice.call(arguments,0,arguments.length);return $send($post_args,"reverse_each",[],(($$15=function(str){var self=null==$$15.$$s?this:$$15.$$s;return null==self.fragments&&(self.fragments=nil),null==str&&(str=nil),$truthy(str["$is_a?"]($$($nesting,"String")))&&(str=self.$fragment(str)),self.fragments.$unshift(str)}).$$s=this,$$15.$$arity=1,$$15))},$Base_comments$46.$$arity=-1),Opal.def($Base_source_location$47,"$wrap",$Base_comments$46=function(pre,post){return this.$unshift(pre),this.$push(post)},$Base_comments$46.$$arity=2),Opal.def($Base_source_location$47,"$fragment",$Base_comments$46=function(str){return $$$($$($nesting,"Opal"),"Fragment").$new(str,this.$scope(),this.sexp)},$Base_comments$46.$$arity=1),Opal.def($Base_source_location$47,"$error",$Base_comments$46=function(msg){return this.compiler.$error(msg)},$Base_comments$46.$$arity=1),Opal.def($Base_source_location$47,"$scope",$Base_comments$46=function(){return this.compiler.$scope()},$Base_comments$46.$$arity=0),Opal.def($Base_source_location$47,"$top_scope",$Base_comments$46=function(){return this.$scope().$top_scope()},$Base_comments$46.$$arity=0),Opal.def($Base_source_location$47,"$s",$Base_comments$46=function($a){var $post_args=Opal.slice.call(arguments,0,arguments.length);return $send(this.compiler,"s",Opal.to_a($post_args))},$Base_comments$46.$$arity=-1),Opal.def($Base_source_location$47,"$expr?",$Base_comments$46=function(){return this.level["$=="]("expr")},$Base_comments$46.$$arity=0),Opal.def($Base_source_location$47,"$recv?",$Base_comments$46=function(){return this.level["$=="]("recv")},$Base_comments$46.$$arity=0),Opal.def($Base_source_location$47,"$stmt?",$Base_comments$46=function(){return this.level["$=="]("stmt")},$Base_comments$46.$$arity=0),Opal.def($Base_source_location$47,"$process",$Base_comments$46=function(sexp,level){return null==level&&(level="expr"),this.compiler.$process(sexp,level)},$Base_comments$46.$$arity=-2),Opal.def($Base_source_location$47,"$expr",$Base_comments$46=function(sexp){return this.compiler.$process(sexp,"expr")},$Base_comments$46.$$arity=1),Opal.def($Base_source_location$47,"$recv",$Base_comments$46=function(sexp){return this.compiler.$process(sexp,"recv")},$Base_comments$46.$$arity=1),Opal.def($Base_source_location$47,"$stmt",$Base_comments$46=function(sexp){return this.compiler.$process(sexp,"stmt")},$Base_comments$46.$$arity=1),Opal.def($Base_source_location$47,"$expr_or_nil",$Base_comments$46=function(sexp){return $truthy(sexp)?this.$expr(sexp):"nil"},$Base_comments$46.$$arity=1),Opal.def($Base_source_location$47,"$add_local",$Base_comments$46=function(name){return this.$scope().$add_scope_local(name.$to_sym())},$Base_comments$46.$$arity=1),Opal.def($Base_source_location$47,"$add_ivar",$Base_comments$46=function(name){return this.$scope().$add_scope_ivar(name)},$Base_comments$46.$$arity=1),Opal.def($Base_source_location$47,"$add_gvar",$Base_comments$46=function(name){return this.$scope().$add_scope_gvar(name)},$Base_comments$46.$$arity=1),Opal.def($Base_source_location$47,"$add_temp",$Base_comments$46=function(temp){return this.$scope().$add_scope_temp(temp)},$Base_comments$46.$$arity=1),Opal.def($Base_source_location$47,"$helper",$Base_comments$46=function(name){return this.compiler.$helper(name)},$Base_comments$46.$$arity=1),Opal.def($Base_source_location$47,"$with_temp",$Base_with_temp$35=function(){var $iter=$Base_with_temp$35.$$p,block=$iter||nil;return $iter&&($Base_with_temp$35.$$p=null),$iter&&($Base_with_temp$35.$$p=null),$send(this.compiler,"with_temp",[],block.$to_proc())},$Base_with_temp$35.$$arity=0),Opal.def($Base_source_location$47,"$in_while?",$Base_comments$46=function(){return this.compiler["$in_while?"]()},$Base_comments$46.$$arity=0),Opal.def($Base_source_location$47,"$while_loop",$Base_comments$46=function(){return this.compiler.$instance_variable_get("@while_loop")},$Base_comments$46.$$arity=0),Opal.def($Base_source_location$47,"$has_rescue_else?",$Base_comments$46=function(){return this.$scope()["$has_rescue_else?"]()},$Base_comments$46.$$arity=0),Opal.def($Base_source_location$47,"$in_ensure",$Base_in_ensure$39=function(){var $iter=$Base_in_ensure$39.$$p,block=$iter||nil;return $iter&&($Base_in_ensure$39.$$p=null),$iter&&($Base_in_ensure$39.$$p=null),$send(this.$scope(),"in_ensure",[],block.$to_proc())},$Base_in_ensure$39.$$arity=0),Opal.def($Base_source_location$47,"$in_ensure?",$Base_comments$46=function(){return this.$scope()["$in_ensure?"]()},$Base_comments$46.$$arity=0),Opal.def($Base_source_location$47,"$in_resbody",$Base_in_resbody$41=function(){var $iter=$Base_in_resbody$41.$$p,block=$iter||nil;return $iter&&($Base_in_resbody$41.$$p=null),$iter&&($Base_in_resbody$41.$$p=null),$send(this.$scope(),"in_resbody",[],block.$to_proc())},$Base_in_resbody$41.$$arity=0),Opal.def($Base_source_location$47,"$in_resbody?",$Base_comments$46=function(){return this.$scope()["$in_resbody?"]()},$Base_comments$46.$$arity=0),Opal.def($Base_source_location$47,"$in_rescue",$Base_in_rescue$43=function(node){var $iter=$Base_in_rescue$43.$$p,block=$iter||nil;return $iter&&($Base_in_rescue$43.$$p=null),$iter&&($Base_in_rescue$43.$$p=null),$send(this.$scope(),"in_rescue",[node],block.$to_proc())},$Base_in_rescue$43.$$arity=1),Opal.def($Base_source_location$47,"$class_variable_owner_nesting_level",$Base_comments$46=function(){for(var lhs,rhs,cvar_scope=nil,nesting_level=nil,$ret_or_2=nil,cvar_scope=this.$scope(),nesting_level=0;$truthy($truthy($ret_or_2=cvar_scope)?cvar_scope["$class_scope?"]()["$!"]():$ret_or_2);)$truthy(cvar_scope["$sclass?"]())&&(rhs=1,nesting_level="number"==typeof(lhs=nesting_level)&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)),cvar_scope=cvar_scope.$parent();return nesting_level},$Base_comments$46.$$arity=0),Opal.def($Base_source_location$47,"$class_variable_owner",$Base_comments$46=function(){return $truthy(this.$scope())?"$nesting["+this.$class_variable_owner_nesting_level()+"]":"Opal.Object"},$Base_comments$46.$$arity=0),Opal.def($Base_source_location$47,"$comments",$Base_comments$46=function(){return this.$compiler().$comments()["$[]"](this.sexp.$loc())},$Base_comments$46.$$arity=0),Opal.def($Base_source_location$47,"$source_location",$Base_source_location$47=function(){var file=nil,file=this.sexp.$loc().$expression().$source_buffer().$name();return $truthy(file["$start_with?"]("corelib/"))&&(file="<internal:"+file+">"),$truthy(file["$end_with?"](".js"))&&(file="<js:"+file+">"),"['"+file+"', "+this.sexp.$loc().$line()+"]"},$Base_source_location$47.$$arity=0),nil&&"source_location"}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/literal"]=function(Opal){function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$hash2=Opal.hash2,$send=Opal.send,$lambda=Opal.lambda,$send2=Opal.send2,$find_super=Opal.find_super,$slice=Opal.slice;return 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function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$ValueNode_truthy_optimize$ques$2,$ValueNode_compile$1){[$ValueNode_truthy_optimize$ques$2=$klass($base,$ValueNode_truthy_optimize$ques$2,"ValueNode")].concat($ValueNode_compile$1),$ValueNode_truthy_optimize$ques$2.$handle("true","false","self","nil"),Opal.def($ValueNode_truthy_optimize$ques$2,"$compile",$ValueNode_compile$1=function(){return this.$push(this.$type().$to_s())},$ValueNode_compile$1.$$arity=0),Opal.defs($ValueNode_truthy_optimize$ques$2,"$truthy_optimize?",$ValueNode_truthy_optimize$ques$2=function(){return!0},$ValueNode_truthy_optimize$ques$2.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$NumericNode_truthy_optimize$ques$4,$NumericNode_compile$3){[$NumericNode_truthy_optimize$ques$4=$klass($base,$NumericNode_truthy_optimize$ques$4,"NumericNode")].concat($NumericNode_compile$3),$NumericNode_truthy_optimize$ques$4.$handle("int","float"),$NumericNode_truthy_optimize$ques$4.$children("value"),Opal.def($NumericNode_truthy_optimize$ques$4,"$compile",$NumericNode_compile$3=function(){return this.$push(this.$value().$to_s()),$truthy(this["$recv?"]())?this.$wrap("(",")"):nil},$NumericNode_compile$3.$$arity=0),Opal.defs($NumericNode_truthy_optimize$ques$4,"$truthy_optimize?",$NumericNode_truthy_optimize$ques$4=function(){return!0},$NumericNode_truthy_optimize$ques$4.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$StringNode_to_utf16$9,$StringNode_compile$7){var $nesting=[$StringNode_to_utf16$9=$klass($base,$StringNode_to_utf16$9,"StringNode")].concat($StringNode_compile$7);$StringNode_to_utf16$9.$handle("str"),$StringNode_to_utf16$9.$children("value"),Opal.const_set($nesting[0],"ESCAPE_CHARS",$hash2(["a","e"],{a:"\\u0007",e:"\\u001b"}).$freeze()),Opal.const_set($nesting[0],"ESCAPE_REGEX",Opal.regexp(["(\\\\+)([",$$($nesting,"ESCAPE_CHARS").$keys().$join(""),"])"]).$freeze()),Opal.def($StringNode_to_utf16$9,"$translate_escape_chars",$StringNode_compile$7=function(inspect_string){var $$6;return $send(inspect_string,"gsub",[$$($nesting,"ESCAPE_REGEX")],(($$6=function(original){null==$$6.$$s||$$6.$$s;return null==original&&(original=nil),$truthy($$($nesting,"Regexp").$last_match(1).$length()["$even?"]())?original:$rb_plus($$($nesting,"Regexp").$last_match(1).$chop(),$$($nesting,"ESCAPE_CHARS")["$[]"]($$($nesting,"Regexp").$last_match(2)))}).$$s=this,$$6.$$arity=1,$$6))},$StringNode_compile$7.$$arity=1),Opal.def($StringNode_to_utf16$9,"$compile",$StringNode_compile$7=function(){var $$8,string_value=nil,string_value=this.$value(),sanitized_value=$send(string_value.$inspect(),"gsub",[/\\u\{([0-9a-f]+)\}/],(($$8=function(){var self=null==$$8.$$s?this:$$8.$$s,code_point=$$($nesting,"Regexp").$last_match(1).$to_i(16);return self.$to_utf16(code_point)}).$$s=this,$$8.$$arity=0,$$8));return this.$push(this.$translate_escape_chars(sanitized_value)),$truthy(this.$value()["$valid_encoding?"]())?nil:(this.$helper("binary"),this.$wrap("$binary(",")"))},$StringNode_compile$7.$$arity=0),Opal.def($StringNode_to_utf16$9,"$to_utf16",$StringNode_to_utf16$9=function(code_point){var $$10,lead_surrogate,tail_surrogate,lhs,rhs,u=nil,u=$lambda((($$10=function(code_unit){null==$$10.$$s||$$10.$$s;return null==code_unit&&(code_unit=nil),$rb_plus("\\u",code_unit.$to_s(16).$upcase())}).$$s=this,$$10.$$arity=1,$$10));return $truthy((rhs=65535,"number"==typeof(lhs=code_point)&&"number"==typeof 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$RegexpNode_initialize$12,$nesting=[$RegexpNode_single_line$ques$21=$klass($base,$RegexpNode_single_line$ques$21,"RegexpNode")].concat($RegexpNode_raw_value$20);$RegexpNode_single_line$ques$21.$$prototype.sexp=nil,$RegexpNode_single_line$ques$21.$handle("regexp"),$RegexpNode_single_line$ques$21.$attr_accessor("value","flags"),Opal.const_set($nesting[0],"SUPPORTED_FLAGS",/[gimuy]/.$freeze()),Opal.def($RegexpNode_single_line$ques$21,"$initialize",$RegexpNode_initialize$12=function($a){var $zuper_ii,$iter=$RegexpNode_initialize$12.$$p,$zuper=nil,$zuper_i=nil;for($iter&&($RegexpNode_initialize$12.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return Opal.slice.call(arguments,0,arguments.length),$send2(this,$find_super(this,"initialize",$RegexpNode_initialize$12,!1,!0),"initialize",$zuper,$iter),this.$extract_flags_and_value()},$RegexpNode_initialize$12.$$arity=-1),Opal.def($RegexpNode_single_line$ques$21,"$compile",$RegexpNode_raw_value$20=function(){var $$14;return $send(this.$flags(),"select!",[],(($$14=function(flag){var self=null==$$14.$$s?this:$$14.$$s;return null==flag&&(flag=nil),!!$truthy($$($nesting,"SUPPORTED_FLAGS")["$=~"](flag))||(self.$compiler().$warning("Skipping the '"+flag+"' Regexp flag as it's not widely supported by JavaScript vendors."),!1)}).$$s=this,$$14.$$arity=1,$$14)),this.$value().$type()["$=="]("str")?this.$compile_static_regexp():this.$compile_dynamic_regexp()},$RegexpNode_raw_value$20.$$arity=0),Opal.def($RegexpNode_single_line$ques$21,"$compile_dynamic_regexp",$RegexpNode_raw_value$20=function(){var $$16;return this.$push("Opal.regexp(["),$send(this.$value().$children(),"each_with_index",[],(($$16=function(v,index){var self=null==$$16.$$s?this:$$16.$$s;return null==v&&(v=nil),null==index&&(index=nil),$truthy(index["$zero?"]())||self.$push(", "),self.$push(self.$expr(v))}).$$s=this,$$16.$$arity=2,$$16)),this.$push("]"),$truthy(this.$flags()["$any?"]())&&this.$push(", '"+this.$flags().$join()+"'"),this.$push(")")},$RegexpNode_raw_value$20.$$arity=0),Opal.def($RegexpNode_single_line$ques$21,"$compile_static_regexp",$RegexpNode_raw_value$20=function(){var self=this,value=self.$value().$children()["$[]"](0);return""["$==="](value)?self.$push("/(?:)/"):self.$push(""+$$($nesting,"Regexp").$new(value).$inspect()+self.$flags().$join())},$RegexpNode_raw_value$20.$$arity=0),Opal.def($RegexpNode_single_line$ques$21,"$extract_flags_and_value",$RegexpNode_raw_value$20=function(){var $$19,parts,self=this,values=nil,flags_sexp=nil,$writer=nil,$a=[].concat(Opal.to_a(self.$children())),$b=$a.length-1;return $b=$b<0?0:$b,values=$slice.call($a,0,$b),flags_sexp=null==$a[$b]?nil:$a[$b],$writer=[$send(flags_sexp.$children(),"map",[],"to_s".$to_proc())],$send(self,"flags=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)],$writer=[$truthy(values["$empty?"]())?self.$s("str",""):$truthy(self["$single_line?"](values))?values["$[]"](0):$send(self,"s",["dstr"].concat(Opal.to_a(values)))],$send(self,"value=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)],$truthy(self.$flags()["$include?"]("x"))&&(parts=$send(self.$value().$children(),"map",[],(($$19=function(part){var trimmed_value,self=null==$$19.$$s?this:$$19.$$s,$ret_or_1=nil;return 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$send(this,"value=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]},$RegexpNode_raw_value$20.$$arity=0),$RegexpNode_single_line$ques$21.$private(),Opal.def($RegexpNode_single_line$ques$21,"$single_line?",$RegexpNode_single_line$ques$21=function(values){var $ret_or_2,lhs,rhs,value=nil;return!$truthy((lhs=values.$length(),rhs=1,"number"==typeof lhs&&"number"==typeof 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this.$push(this.$expr(send_node))},$MatchCurrentLineNode_compile$22.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$DynamicStringNode_compile$23,$parent_nesting){[$DynamicStringNode_compile$23=$klass($base,$DynamicStringNode_compile$23,"DynamicStringNode")].concat($parent_nesting),$DynamicStringNode_compile$23.$handle("dstr"),Opal.def($DynamicStringNode_compile$23,"$compile",$DynamicStringNode_compile$23=function(){var $$24;return this.$push('""'),$send(this.$children(),"each",[],(($$24=function(part){var self=null==$$24.$$s?this:$$24.$$s;return null==part&&(part=nil),self.$push(" + 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$truthy(this["$compile_inline?"]())?(this.$helper("range"),this.$compile_inline()):this.$compile_range_initialize()},$RangeNode_compile_inline$27.$$arity=0),Opal.def($RangeNode_compile_range_initialize$28,"$compile_inline?",$RangeNode_compile_inline$27=function(){var $ret_or_3,$ret_or_6,$ret_or_7,self=this,$ret_or_4=nil,$ret_or_5=nil;return $truthy($ret_or_3=$truthy($ret_or_4=self.$start()["$!"]())?$ret_or_4:$truthy($ret_or_5=self.$start().$type())?$$($nesting,"SIMPLE_CHILDREN_TYPES")["$include?"](self.$start().$type()):$ret_or_5)?$truthy($ret_or_6=self.$finish()["$!"]())?$ret_or_6:$truthy($ret_or_7=self.$finish().$type())?$$($nesting,"SIMPLE_CHILDREN_TYPES")["$include?"](self.$finish().$type()):$ret_or_7:$ret_or_3},$RangeNode_compile_inline$27.$$arity=0),Opal.def($RangeNode_compile_range_initialize$28,"$compile_inline",$RangeNode_compile_inline$27=function(){return this.$raise($$($nesting,"NotImplementedError"))},$RangeNode_compile_inline$27.$$arity=0),Opal.def($RangeNode_compile_range_initialize$28,"$compile_range_initialize",$RangeNode_compile_range_initialize$28=function(){return this.$raise($$($nesting,"NotImplementedError"))},$RangeNode_compile_range_initialize$28.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$InclusiveRangeNode_compile_range_initialize$30,$InclusiveRangeNode_compile_inline$29){[$InclusiveRangeNode_compile_range_initialize$30=$klass($base,$InclusiveRangeNode_compile_range_initialize$30,"InclusiveRangeNode")].concat($InclusiveRangeNode_compile_inline$29),$InclusiveRangeNode_compile_range_initialize$30.$handle("irange"),Opal.def($InclusiveRangeNode_compile_range_initialize$30,"$compile_inline",$InclusiveRangeNode_compile_inline$29=function(){return this.$push("$range(",this.$expr_or_nil(this.$start()),", ",this.$expr_or_nil(this.$finish()),", false)")},$InclusiveRangeNode_compile_inline$29.$$arity=0),Opal.def($InclusiveRangeNode_compile_range_initialize$30,"$compile_range_initialize",$InclusiveRangeNode_compile_range_initialize$30=function(){return this.$push("Opal.Range.$new(",this.$expr_or_nil(this.$start()),", ",this.$expr_or_nil(this.$finish()),", false)")},$InclusiveRangeNode_compile_range_initialize$30.$$arity=0)}($nesting[0],$$($nesting,"RangeNode"),$nesting),function($base,$ExclusiveRangeNode_compile_range_initialize$32,$ExclusiveRangeNode_compile_inline$31){[$ExclusiveRangeNode_compile_range_initialize$32=$klass($base,$ExclusiveRangeNode_compile_range_initialize$32,"ExclusiveRangeNode")].concat($ExclusiveRangeNode_compile_inline$31),$ExclusiveRangeNode_compile_range_initialize$32.$handle("erange"),Opal.def($ExclusiveRangeNode_compile_range_initialize$32,"$compile_inline",$ExclusiveRangeNode_compile_inline$31=function(){return this.$push("$range(",this.$expr_or_nil(this.$start()),", ",this.$expr_or_nil(this.$finish()),", true)")},$ExclusiveRangeNode_compile_inline$31.$$arity=0),Opal.def($ExclusiveRangeNode_compile_range_initialize$32,"$compile_range_initialize",$ExclusiveRangeNode_compile_range_initialize$32=function(){return this.$push("Opal.Range.$new(",this.$expr_or_nil(this.$start()),",",this.$expr_or_nil(this.$finish()),", true)")},$ExclusiveRangeNode_compile_range_initialize$32.$$arity=0)}($nesting[0],$$($nesting,"RangeNode"),$nesting),function($base,$RationalNode_compile$33,$parent_nesting){[$RationalNode_compile$33=$klass($base,$RationalNode_compile$33,"RationalNode")].concat($parent_nesting),$RationalNode_compile$33.$handle("rational"),$RationalNode_compile$33.$children("value"),Opal.def($RationalNode_compile$33,"$compile",$RationalNode_compile$33=function(){return this.$push("Opal.Rational.$new("+this.$value().$numerator()+", "+this.$value().$denominator()+")")},$RationalNode_compile$33.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$ComplexNode_compile$34,$parent_nesting){$ComplexNode_compile$34=$klass($base,$ComplexNode_compile$34,"ComplexNode"),[$ComplexNode_compile$34].concat($parent_nesting);return $ComplexNode_compile$34.$handle("complex"),$ComplexNode_compile$34.$children("value"),Opal.def($ComplexNode_compile$34,"$compile",$ComplexNode_compile$34=function(){return this.$push("Opal.Complex.$new("+this.$value().$real()+", "+this.$value().$imag()+")")},$ComplexNode_compile$34.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/variables"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send,$range=Opal.range,$send2=Opal.send2,$find_super=Opal.find_super;return Opal.add_stubs(["$require","$handle","$children","$irb?","$compiler","$top?","$scope","$using_irb?","$push","$to_s","$var_name","$with_temp","$property","$wrap","$add_local","$expr","$value","$recv?","$expr?","$[]","$name","$add_ivar","$helper","$add_gvar","$===","$handle_global_match","$handle_post_match","$handle_pre_match","$raise","$index","$stmt?","$class_variable_owner","$inspect"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$LocalVariableNode_compile$2,$LocalVariableNode_using_irb$ques$1){[$LocalVariableNode_compile$2=$klass($base,$LocalVariableNode_compile$2,"LocalVariableNode")].concat($LocalVariableNode_using_irb$ques$1),$LocalVariableNode_compile$2.$handle("lvar"),$LocalVariableNode_compile$2.$children("var_name"),Opal.def($LocalVariableNode_compile$2,"$using_irb?",$LocalVariableNode_using_irb$ques$1=function(){var $ret_or_1;return $truthy($ret_or_1=this.$compiler()["$irb?"]())?this.$scope()["$top?"]():$ret_or_1},$LocalVariableNode_using_irb$ques$1.$$arity=0),Opal.def($LocalVariableNode_compile$2,"$compile",$LocalVariableNode_compile$2=function(){var $$3;return $truthy(this["$using_irb?"]())?$send(this,"with_temp",[],(($$3=function(tmp){var self=null==$$3.$$s?this:$$3.$$s;return null==tmp&&(tmp=nil),self.$push(self.$property(self.$var_name().$to_s())),self.$wrap("(("+tmp+" = Opal.irb_vars",") == null ? nil : "+tmp+")")}).$$s=this,$$3.$$arity=1,$$3)):this.$push(this.$var_name().$to_s())},$LocalVariableNode_compile$2.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$LocalAssignNode_compile$5,$LocalAssignNode_using_irb$ques$4){[$LocalAssignNode_compile$5=$klass($base,$LocalAssignNode_compile$5,"LocalAssignNode")].concat($LocalAssignNode_using_irb$ques$4),$LocalAssignNode_compile$5.$handle("lvasgn"),$LocalAssignNode_compile$5.$children("var_name","value"),Opal.def($LocalAssignNode_compile$5,"$using_irb?",$LocalAssignNode_using_irb$ques$4=function(){var $ret_or_2;return $truthy($ret_or_2=this.$compiler()["$irb?"]())?this.$scope()["$top?"]():$ret_or_2},$LocalAssignNode_using_irb$ques$4.$$arity=0),Opal.def($LocalAssignNode_compile$5,"$compile",$LocalAssignNode_compile$5=function(){var self=this,$ret_or_3=nil,$ret_or_4=nil;return $truthy(self["$using_irb?"]())?self.$push("Opal.irb_vars"+self.$property(self.$var_name().$to_s())+" = "):(self.$add_local(self.$var_name().$to_s()),self.$push(self.$var_name()+" = ")),self.$push(self.$expr(self.$value())),$truthy($truthy($ret_or_3=$truthy($ret_or_4=self["$recv?"]())?$ret_or_4:self["$expr?"]())?self.$value():$ret_or_3)?self.$wrap("(",")"):nil},$LocalAssignNode_compile$5.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$LocalDeclareNode_compile$6,$parent_nesting){[$LocalDeclareNode_compile$6=$klass($base,$LocalDeclareNode_compile$6,"LocalDeclareNode")].concat($parent_nesting),$LocalDeclareNode_compile$6.$handle("lvdeclare"),$LocalDeclareNode_compile$6.$children("var_name"),Opal.def($LocalDeclareNode_compile$6,"$compile",$LocalDeclareNode_compile$6=function(){return this.$add_local(this.$var_name().$to_s()),nil},$LocalDeclareNode_compile$6.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$InstanceVariableNode_compile$8,$InstanceVariableNode_var_name$7){[$InstanceVariableNode_compile$8=$klass($base,$InstanceVariableNode_compile$8,"InstanceVariableNode")].concat($InstanceVariableNode_var_name$7),$InstanceVariableNode_compile$8.$handle("ivar"),$InstanceVariableNode_compile$8.$children("name"),Opal.def($InstanceVariableNode_compile$8,"$var_name",$InstanceVariableNode_var_name$7=function(){return this.$name().$to_s()["$[]"]($range(1,-1,!1))},$InstanceVariableNode_var_name$7.$$arity=0),Opal.def($InstanceVariableNode_compile$8,"$compile",$InstanceVariableNode_compile$8=function(){var name=this.$property(this.$var_name());return this.$add_ivar(name),this.$push("self"+name)},$InstanceVariableNode_compile$8.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$InstanceAssignNode_compile$10,$InstanceAssignNode_var_name$9){[$InstanceAssignNode_compile$10=$klass($base,$InstanceAssignNode_compile$10,"InstanceAssignNode")].concat($InstanceAssignNode_var_name$9),$InstanceAssignNode_compile$10.$handle("ivasgn"),$InstanceAssignNode_compile$10.$children("name","value"),Opal.def($InstanceAssignNode_compile$10,"$var_name",$InstanceAssignNode_var_name$9=function(){return this.$name().$to_s()["$[]"]($range(1,-1,!1))},$InstanceAssignNode_var_name$9.$$arity=0),Opal.def($InstanceAssignNode_compile$10,"$compile",$InstanceAssignNode_compile$10=function(){var self=this,$ret_or_5=nil,$ret_or_6=nil,name=self.$property(self.$var_name());return self.$push("self"+name+" = "),self.$push(self.$expr(self.$value())),$truthy($truthy($ret_or_5=$truthy($ret_or_6=self["$recv?"]())?$ret_or_6:self["$expr?"]())?self.$value():$ret_or_5)?self.$wrap("(",")"):nil},$InstanceAssignNode_compile$10.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$GlobalVariableNode_compile$12,$GlobalVariableNode_var_name$11){[$GlobalVariableNode_compile$12=$klass($base,$GlobalVariableNode_compile$12,"GlobalVariableNode")].concat($GlobalVariableNode_var_name$11),$GlobalVariableNode_compile$12.$handle("gvar"),$GlobalVariableNode_compile$12.$children("name"),Opal.def($GlobalVariableNode_compile$12,"$var_name",$GlobalVariableNode_var_name$11=function(){return this.$name().$to_s()["$[]"]($range(1,-1,!1))},$GlobalVariableNode_var_name$11.$$arity=0),Opal.def($GlobalVariableNode_compile$12,"$compile",$GlobalVariableNode_compile$12=function(){var name;return this.$helper("gvars"),name=this.$property(this.$var_name()),this.$add_gvar(name),this.$push("$gvars"+name)},$GlobalVariableNode_compile$12.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$BackRefNode_handle_post_match$18,$BackRefNode_handle_pre_match$16){var $BackRefNode_compile$13,$nesting=[$BackRefNode_handle_post_match$18=$klass($base,$BackRefNode_handle_post_match$18,"BackRefNode")].concat($BackRefNode_handle_pre_match$16);$BackRefNode_handle_post_match$18.$handle("back_ref"),Opal.def($BackRefNode_handle_post_match$18,"$compile",$BackRefNode_compile$13=function(){var $zuper_ii,$iter=$BackRefNode_compile$13.$$p,self=this,$case=nil,$zuper=nil,$zuper_i=nil;for($iter&&($BackRefNode_compile$13.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return self.$helper("gvars"),$case=self.$var_name(),"&"["$==="]($case)?self.$handle_global_match():"'"["$==="]($case)?self.$handle_post_match():"`"["$==="]($case)?self.$handle_pre_match():"+"["$==="]($case)?$send2(self,$find_super(self,"compile",$BackRefNode_compile$13,!1,!0),"compile",$zuper,$iter):self.$raise($$($nesting,"NotImplementedError"))},$BackRefNode_compile$13.$$arity=0),Opal.def($BackRefNode_handle_post_match$18,"$handle_global_match",$BackRefNode_handle_pre_match$16=function(){var $$15;return $send(this,"with_temp",[],(($$15=function(tmp){var self=null==$$15.$$s?this:$$15.$$s;return null==tmp&&(tmp=nil),self.$push("(("+tmp+" = $gvars['~']) === nil ? nil : "+tmp+"['$[]'](0))")}).$$s=this,$$15.$$arity=1,$$15))},$BackRefNode_handle_pre_match$16.$$arity=0),Opal.def($BackRefNode_handle_post_match$18,"$handle_pre_match",$BackRefNode_handle_pre_match$16=function(){var $$17;return $send(this,"with_temp",[],(($$17=function(tmp){var self=null==$$17.$$s?this:$$17.$$s;return null==tmp&&(tmp=nil),self.$push("(("+tmp+" = $gvars['~']) === nil ? nil : "+tmp+".$pre_match())")}).$$s=this,$$17.$$arity=1,$$17))},$BackRefNode_handle_pre_match$16.$$arity=0),Opal.def($BackRefNode_handle_post_match$18,"$handle_post_match",$BackRefNode_handle_post_match$18=function(){var $$19;return $send(this,"with_temp",[],(($$19=function(tmp){var self=null==$$19.$$s?this:$$19.$$s;return null==tmp&&(tmp=nil),self.$push("(("+tmp+" = $gvars['~']) === nil ? nil : "+tmp+".$post_match())")}).$$s=this,$$19.$$arity=1,$$19))},$BackRefNode_handle_post_match$18.$$arity=0)}($nesting[0],$$($nesting,"GlobalVariableNode"),$nesting),function($base,$GlobalAssignNode_compile$21,$GlobalAssignNode_var_name$20){[$GlobalAssignNode_compile$21=$klass($base,$GlobalAssignNode_compile$21,"GlobalAssignNode")].concat($GlobalAssignNode_var_name$20),$GlobalAssignNode_compile$21.$handle("gvasgn"),$GlobalAssignNode_compile$21.$children("name","value"),Opal.def($GlobalAssignNode_compile$21,"$var_name",$GlobalAssignNode_var_name$20=function(){return this.$name().$to_s()["$[]"]($range(1,-1,!1))},$GlobalAssignNode_var_name$20.$$arity=0),Opal.def($GlobalAssignNode_compile$21,"$compile",$GlobalAssignNode_compile$21=function(){var name,self=this,$ret_or_7=nil,$ret_or_8=nil;return self.$helper("gvars"),name=self.$property(self.$var_name()),self.$push("$gvars"+name+" = "),self.$push(self.$expr(self.$value())),$truthy($truthy($ret_or_7=$truthy($ret_or_8=self["$recv?"]())?$ret_or_8:self["$expr?"]())?self.$value():$ret_or_7)?self.$wrap("(",")"):nil},$GlobalAssignNode_compile$21.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$NthrefNode_compile$22,$parent_nesting){[$NthrefNode_compile$22=$klass($base,$NthrefNode_compile$22,"NthrefNode")].concat($parent_nesting),$NthrefNode_compile$22.$handle("nth_ref"),$NthrefNode_compile$22.$children("index"),Opal.def($NthrefNode_compile$22,"$compile",$NthrefNode_compile$22=function(){var $$23;return this.$helper("gvars"),$send(this,"with_temp",[],(($$23=function(tmp){var self=null==$$23.$$s?this:$$23.$$s;return null==tmp&&(tmp=nil),self.$push("(("+tmp+" = $gvars['~']) === nil ? nil : "+tmp+"['$[]']("+self.$index()+"))")}).$$s=this,$$23.$$arity=1,$$23))},$NthrefNode_compile$22.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$ClassVariableNode_compile$24,$parent_nesting){[$ClassVariableNode_compile$24=$klass($base,$ClassVariableNode_compile$24,"ClassVariableNode")].concat($parent_nesting),$ClassVariableNode_compile$24.$handle("cvar"),$ClassVariableNode_compile$24.$children("name"),Opal.def($ClassVariableNode_compile$24,"$compile",$ClassVariableNode_compile$24=function(){var tolerant=nil;return this.$helper("class_variable_get"),tolerant=!1,$truthy(this["$stmt?"]())&&(tolerant=!0),this.$push("$class_variable_get("+this.$class_variable_owner()+", '"+this.$name()+"', "+tolerant.$inspect()+")")},$ClassVariableNode_compile$24.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$ClassVarAssignNode_compile$25,$parent_nesting){$ClassVarAssignNode_compile$25=$klass($base,$ClassVarAssignNode_compile$25,"ClassVarAssignNode"),[$ClassVarAssignNode_compile$25].concat($parent_nesting);return $ClassVarAssignNode_compile$25.$handle("cvasgn"),$ClassVarAssignNode_compile$25.$children("name","value"),Opal.def($ClassVarAssignNode_compile$25,"$compile",$ClassVarAssignNode_compile$25=function(){return this.$helper("class_variable_set"),this.$push("$class_variable_set("+this.$class_variable_owner()+", '"+this.$name()+"', ",this.$expr(this.$value()),")")},$ClassVarAssignNode_compile$25.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/constants"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy;return Opal.add_stubs(["$require","$handle","$children","$magical_data_const?","$push","$const_scope","$recv","$name","$eval?","$compiler","$nil?","$==","$eof_content","$base","$expr","$value"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$ConstNode_magical_data_const$ques$2,$ConstNode_compile$1){[$ConstNode_magical_data_const$ques$2=$klass($base,$ConstNode_magical_data_const$ques$2,"ConstNode")].concat($ConstNode_compile$1),$ConstNode_magical_data_const$ques$2.$handle("const"),$ConstNode_magical_data_const$ques$2.$children("const_scope","name"),Opal.def($ConstNode_magical_data_const$ques$2,"$compile",$ConstNode_compile$1=function(){return $truthy(this["$magical_data_const?"]())?this.$push("$__END__"):$truthy(this.$const_scope())?this.$push("$$$(",this.$recv(this.$const_scope()),", '"+this.$name()+"')"):($truthy(this.$compiler()["$eval?"]()),this.$push("$$($nesting, '"+this.$name()+"')"))},$ConstNode_compile$1.$$arity=0),Opal.def($ConstNode_magical_data_const$ques$2,"$magical_data_const?",$ConstNode_magical_data_const$ques$2=function(){var $ret_or_1,self=this,$ret_or_2=nil;return $truthy($ret_or_1=$truthy($ret_or_2=self.$const_scope()["$nil?"]())?self.$name()["$=="]("DATA"):$ret_or_2)?self.$compiler().$eof_content():$ret_or_1},$ConstNode_magical_data_const$ques$2.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$CbaseNode_compile$3,$parent_nesting){[$CbaseNode_compile$3=$klass($base,$CbaseNode_compile$3,"CbaseNode")].concat($parent_nesting),$CbaseNode_compile$3.$handle("cbase"),Opal.def($CbaseNode_compile$3,"$compile",$CbaseNode_compile$3=function(){return this.$push("'::'")},$CbaseNode_compile$3.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$ConstAssignNode_compile$4,$parent_nesting){$ConstAssignNode_compile$4=$klass($base,$ConstAssignNode_compile$4,"ConstAssignNode"),[$ConstAssignNode_compile$4].concat($parent_nesting);return $ConstAssignNode_compile$4.$handle("casgn"),$ConstAssignNode_compile$4.$children("base","name","value"),Opal.def($ConstAssignNode_compile$4,"$compile",$ConstAssignNode_compile$4=function(){return $truthy(this.$base())?this.$push("Opal.const_set(",this.$expr(this.$base()),", '"+this.$name()+"', ",this.$expr(this.$value()),")"):this.$push("Opal.const_set($nesting[0], '"+this.$name()+"', ",this.$expr(this.$value()),")")},$ConstAssignNode_compile$4.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/break_finder"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$alias=Opal.alias;return Opal.add_stubs(["$require"]),self.$require("opal/rewriter"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Rewriters")].concat($nesting);return function($base,self,$BreakFinder_stop_lookup$4){self=$klass($base,self,"BreakFinder"),[self].concat($BreakFinder_stop_lookup$4);return self.$$prototype.found_break=nil,Opal.def(self,"$initialize",$BreakFinder_stop_lookup$4=function(){return this.found_break=!1},$BreakFinder_stop_lookup$4.$$arity=0),Opal.def(self,"$found_break?",$BreakFinder_stop_lookup$4=function(){return this.found_break},$BreakFinder_stop_lookup$4.$$arity=0),Opal.def(self,"$on_break",$BreakFinder_stop_lookup$4=function(node){return this.found_break=!0,node},$BreakFinder_stop_lookup$4.$$arity=1),Opal.def(self,"$stop_lookup",$BreakFinder_stop_lookup$4=function(){return nil},$BreakFinder_stop_lookup$4.$$arity=1),$alias(self,"on_for","stop_lookup"),$alias(self,"on_while","stop_lookup"),$alias(self,"on_while_post","stop_lookup"),$alias(self,"on_until","stop_lookup"),$alias(self,"on_until_post","stop_lookup"),$alias(self,"on_block","stop_lookup")}($nesting[0],$$$($$$($$($nesting,"Opal"),"Rewriters"),"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/call"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$hash2=Opal.hash2,$send=Opal.send,$send2=Opal.send2,$find_super=Opal.find_super,$slice=Opal.slice,$truthy=Opal.truthy,$range=Opal.range;return 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function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$CallNode_push_nesting$ques$51,$CallNode_using_refinement$42){var $CallNode_add_special$1,$CallNode_initialize$2,$CallNode_handle_special$31,$CallNode$32,$CallNode$34,$CallNode$35,$CallNode$36,$CallNode$37,$CallNode$38,$CallNode$39,$CallNode$40,$CallNode$41,$CallNode$43,$CallNode$44,$CallNode$45,$CallNode$47,$CallNode$48,$CallNode$49,$CallNode$50,$CallNode_push_nesting$ques$51=$klass($base,$CallNode_push_nesting$ques$51,"CallNode"),$nesting=[$CallNode_push_nesting$ques$51].concat($CallNode_using_refinement$42);return 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Opal.slice.call(arguments,0,arguments.length),$send2(this,$find_super(this,"initialize",$CallNode_initialize$2,!1,!0),"initialize",$zuper,$c),$b=[].concat(Opal.to_a(this.sexp)),this.recvr=null==$b[0]?nil:$b[0],this.meth=null==$b[1]?nil:$b[1],args=$slice.call($b,2),$c=($c=($b=[].concat(Opal.to_a(args))).length-1)<0?0:$c,rest=$slice.call($b,0,$c),last_arg=null==$b[$c]?nil:$b[$c],$truthy($truthy($ret_or_1=last_arg)?["iter","block_pass"]["$include?"](last_arg.$type()):$ret_or_1)?(this.iter=last_arg,args=rest):this.iter=nil,this.arglist=$send(this,"s",["arglist"].concat(Opal.to_a(args)))},$CallNode_initialize$2.$$arity=-1),Opal.def($CallNode_push_nesting$ques$51,"$compile",$CallNode_using_refinement$42=function(){try{var $$4;return $send(this,"handle_special",[],(($$4=function(){var self=null==$$4.$$s?this:$$4.$$s;return $truthy(self["$record_method?"]())&&self.$compiler().$method_calls()["$<<"](self.$meth().$to_sym()),$truthy(self["$using_eval?"]())&&Opal.ret(self.$compile_eval_var()),$truthy(self["$using_irb?"]())&&Opal.ret(self.$compile_irb_var()),self.$default_compile()}).$$s=this,$$4.$$arity=0,$$4))}catch($returner){if($returner===Opal.returner)return $returner.$v;throw $returner}},$CallNode_using_refinement$42.$$arity=0),$CallNode_push_nesting$ques$51.$private(),Opal.def($CallNode_push_nesting$ques$51,"$iter_has_break?",$CallNode_using_refinement$42=function(){var finder=nil;return!!$truthy(this.$iter())&&((finder=$$$($$$($$($nesting,"Opal"),"Rewriters"),"BreakFinder").$new()).$process(this.$iter()),finder["$found_break?"]())},$CallNode_using_refinement$42.$$arity=0),Opal.def($CallNode_push_nesting$ques$51,"$invoke_using_send?",$CallNode_using_refinement$42=function(){var $ret_or_2;return $truthy($ret_or_2=this.$iter())?$ret_or_2:this["$splat?"]()},$CallNode_using_refinement$42.$$arity=0),Opal.def($CallNode_push_nesting$ques$51,"$invoke_using_refinement?",$CallNode_using_refinement$42=function(){return this.$scope().$scope().$collect_refinements_temps()["$empty?"]()["$!"]()},$CallNode_using_refinement$42.$$arity=0),Opal.def($CallNode_push_nesting$ques$51,"$default_compile",$CallNode_using_refinement$42=function(){return $truthy(this["$invoke_using_refinement?"]())?this.$compile_using_refined_send():$truthy(this["$invoke_using_send?"]())?this.$compile_using_send():this.$compile_simple_call_chain(),this.$compile_break_catcher()},$CallNode_using_refinement$42.$$arity=0),Opal.def($CallNode_push_nesting$ques$51,"$compile_using_send",$CallNode_using_refinement$42=function(){return this.$helper("send"),this.$push("$send("),this.$compile_receiver(),this.$compile_method_name(),this.$compile_arguments(),this.$compile_block_pass(),this.$push(")")},$CallNode_using_refinement$42.$$arity=0),Opal.def($CallNode_push_nesting$ques$51,"$compile_using_refined_send",$CallNode_using_refinement$42=function(){return this.$helper("refined_send"),this.$push("$refined_send("),this.$compile_refinements(),this.$compile_receiver(),this.$compile_method_name(),this.$compile_arguments(),this.$compile_block_pass(),this.$push(")")},$CallNode_using_refinement$42.$$arity=0),Opal.def($CallNode_push_nesting$ques$51,"$compile_receiver",$CallNode_using_refinement$42=function(){return this.$push(this.$recv(this.$receiver_sexp()))},$CallNode_using_refinement$42.$$arity=0),Opal.def($CallNode_push_nesting$ques$51,"$compile_method_name",$CallNode_using_refinement$42=function(){return this.$push(", '"+this.$meth()+"'")},$CallNode_using_refinement$42.$$arity=0),Opal.def($CallNode_push_nesting$ques$51,"$compile_arguments",$CallNode_using_refinement$42=function(){return this.$push(", "),$truthy(this["$splat?"]())?this.$push(this.$expr(this.$arglist())):$truthy(this.$arglist().$children()["$empty?"]())?this.$push("[]"):this.$push("[",this.$expr(this.$arglist()),"]")},$CallNode_using_refinement$42.$$arity=0),Opal.def($CallNode_push_nesting$ques$51,"$compile_block_pass",$CallNode_using_refinement$42=function(){return $truthy(this.$iter())?this.$push(", ",this.$expr(this.$iter())):nil},$CallNode_using_refinement$42.$$arity=0),Opal.def($CallNode_push_nesting$ques$51,"$compile_refinements",$CallNode_using_refinement$42=function(){var $$16,refinements=$send(this.$scope().$collect_refinements_temps(),"map",[],(($$16=function(i){var self=null==$$16.$$s?this:$$16.$$s;return null==i&&(i=nil),self.$s("js_tmp",i)}).$$s=this,$$16.$$arity=1,$$16));return 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null==tmp&&(tmp=nil),lvar=self.$meth(),call=self.$s("send",self.$s("self"),self.$meth().$intern(),self.$s("arglist")),self.$push("(("+tmp+" = Opal.irb_vars."+lvar+") == null ? ",self.$expr(call)," : "+tmp+")")}).$$s=this,$$25.$$arity=1,$$25))},$CallNode_using_refinement$42.$$arity=0),Opal.def($CallNode_push_nesting$ques$51,"$compile_eval_var",$CallNode_using_refinement$42=function(){return this.$push(this.$meth().$to_s())},$CallNode_using_refinement$42.$$arity=0),Opal.def($CallNode_push_nesting$ques$51,"$using_irb?",$CallNode_using_refinement$42=function(){var $ret_or_4,self=this,$ret_or_5=nil;return $truthy($ret_or_4=$truthy($ret_or_5=self.compiler["$irb?"]())?self.$scope()["$top?"]():$ret_or_5)?self["$variable_like?"]():$ret_or_4},$CallNode_using_refinement$42.$$arity=0),Opal.def($CallNode_push_nesting$ques$51,"$using_eval?",$CallNode_using_refinement$42=function(){var $ret_or_6,self=this,$ret_or_7=nil;return $truthy($ret_or_6=$truthy($ret_or_7=self.compiler["$eval?"]())?self.$scope()["$top?"]():$ret_or_7)?self.compiler.$scope_variables()["$include?"](self.$meth()):$ret_or_6},$CallNode_using_refinement$42.$$arity=0),Opal.def($CallNode_push_nesting$ques$51,"$variable_like?",$CallNode_using_refinement$42=function(){var $ret_or_8,self=this,$ret_or_9=nil;return $truthy($ret_or_8=$truthy($ret_or_9=self.$arglist()["$=="](self.$s("arglist")))?self.$recvr()["$nil?"]():$ret_or_9)?self.$iter()["$nil?"]():$ret_or_8},$CallNode_using_refinement$42.$$arity=0),Opal.def($CallNode_push_nesting$ques$51,"$sexp_with_arglist",$CallNode_using_refinement$42=function(){return this.sexp.$updated(nil,[this.$recvr(),this.$meth(),this.$arglist()])},$CallNode_using_refinement$42.$$arity=0),Opal.def($CallNode_push_nesting$ques$51,"$handle_special",$CallNode_handle_special$31=function(){var $iter=$CallNode_handle_special$31.$$p,compile_default=$iter||nil,method=nil;return $iter&&($CallNode_handle_special$31.$$p=null),$iter&&($CallNode_handle_special$31.$$p=null),$truthy($$($nesting,"SPECIALS")["$include?"](this.$meth()))?(method=this.$method("handle_"+this.$meth())).$arity()["$=="](1)?method["$[]"](compile_default):method["$[]"]():Opal.yieldX(compile_default,[])},$CallNode_handle_special$31.$$arity=0),$send($$($nesting,"OPERATORS"),"each",[],(($CallNode$32=function(operator,name){var $$33,self=null==$CallNode$32.$$s?this:$CallNode$32.$$s;return null==operator&&(operator=nil),null==name&&(name=nil),$send(self,"add_special",[operator.$to_sym()],(($$33=function(compile_default){var $a,lhs,rhs,self=null==$$33.$$s?this:$$33.$$s;return 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function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$CSendNode_default_compile$1,$parent_nesting){$CSendNode_default_compile$1=$klass($base,$CSendNode_default_compile$1,"CSendNode"),[$CSendNode_default_compile$1].concat($parent_nesting);return $CSendNode_default_compile$1.$handle("csend"),Opal.def($CSendNode_default_compile$1,"$default_compile",$CSendNode_default_compile$1=function(){var $$2;return this.$helper("send"),$send(this,"conditional_send",[this.$recv(this.$receiver_sexp())],(($$2=function(receiver_temp){var self=null==$$2.$$s?this:$$2.$$s;return 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function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$JsAttrNode_compile$1,$parent_nesting){[$JsAttrNode_compile$1=$klass($base,$JsAttrNode_compile$1,"JsAttrNode")].concat($parent_nesting),$JsAttrNode_compile$1.$handle("jsattr"),$JsAttrNode_compile$1.$children("recvr","property"),Opal.def($JsAttrNode_compile$1,"$compile",$JsAttrNode_compile$1=function(){return this.$push(this.$recv(this.$recvr()),"[",this.$expr(this.$property()),"]")},$JsAttrNode_compile$1.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$JsAttrAsgnNode_compile$2,$parent_nesting){[$JsAttrAsgnNode_compile$2=$klass($base,$JsAttrAsgnNode_compile$2,"JsAttrAsgnNode")].concat($parent_nesting),$JsAttrAsgnNode_compile$2.$handle("jsattrasgn"),$JsAttrAsgnNode_compile$2.$children("recvr","property","value"),Opal.def($JsAttrAsgnNode_compile$2,"$compile",$JsAttrAsgnNode_compile$2=function(){return 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Opal.slice.call(arguments,0,arguments.length),$send2(this,$find_super(this,"initialize",$JsCallNode_initialize$3,!1,!0),"initialize",$zuper,$iter),$truthy(this.iter)&&(this.arglist=this.arglist["$<<"](this.iter)),this.iter=nil},$JsCallNode_initialize$3.$$arity=-1),Opal.def($JsCallNode_compile_using_send$6,"$compile",$JsCallNode_method_jsid$5=function(){return this.$default_compile()},$JsCallNode_method_jsid$5.$$arity=0),Opal.def($JsCallNode_compile_using_send$6,"$method_jsid",$JsCallNode_method_jsid$5=function(){return"."+this.$meth()},$JsCallNode_method_jsid$5.$$arity=0),Opal.def($JsCallNode_compile_using_send$6,"$compile_using_send",$JsCallNode_compile_using_send$6=function(){return 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$zuper_ii,$iter=$ScopeNode_initialize$1.$$p,$zuper=nil,$zuper_i=nil;for($iter&&($ScopeNode_initialize$1.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return Opal.slice.call(arguments,0,arguments.length),$send2(this,$find_super(this,"initialize",$ScopeNode_initialize$1,!1,!0),"initialize",$zuper,$iter),this.locals=[],this.temps=[],this.args=[],this.ivars=[],this.gvars=[],this.parent=nil,this.queue=[],this.unique="a",this.while_stack=[],this.identity=nil,this.defs=nil,this.methods=[],this.uses_block=!1,this.in_ensure=!1,this.proto_ivars=[]},$ScopeNode_initialize$1.$$arity=-1),Opal.def($ScopeNode_refinements_temp$54,"$in_scope",$ScopeNode_in_scope$2=function(){var $$3,$iter=$ScopeNode_in_scope$2.$$p,$yield=$iter||nil;return $iter&&($ScopeNode_in_scope$2.$$p=null),$send(this,"indent",[],(($$3=function(){var $writer,self=null==$$3.$$s?this:$$3.$$s;return 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this.lambda_definition},$ScopeNode_new_refinements_temp$53.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$def_in_class?",$ScopeNode_new_refinements_temp$53=function(){var $ret_or_4,self=this,$ret_or_5=nil,$ret_or_6=nil;return $truthy($ret_or_4=$truthy($ret_or_5=$truthy($ret_or_6=self.defs["$!"]())?self.type["$=="]("def"):$ret_or_6)?self.parent:$ret_or_5)?self.parent["$class?"]():$ret_or_4},$ScopeNode_new_refinements_temp$53.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$to_vars",$ScopeNode_new_refinements_temp$53=function(){var $$18,$$19,$$20,$$21,indent,self=this,vars=nil,iv=nil,gv=nil,str=nil,$ret_or_7=nil,result=nil,vars=self.temps.$dup();return $send(vars,"push",Opal.to_a($send(self.locals,"map",[],(($$18=function(l){null==$$18.$$s||$$18.$$s;return null==l&&(l=nil),l+" = nil"}).$$s=self,$$18.$$arity=1,$$18)))),iv=$send(self.$ivars(),"map",[],(($$19=function(ivar){null==$$19.$$s||$$19.$$s;return null==ivar&&(ivar=nil),"if (self"+ivar+" == null) self"+ivar+" = nil;\n"}).$$s=self,$$19.$$arity=1,$$19)),gv=$send(self.$gvars(),"map",[],(($$20=function(gvar){null==$$20.$$s||$$20.$$s;return null==gvar&&(gvar=nil),"if ($gvars"+gvar+" == null) $gvars"+gvar+" = nil;\n"}).$$s=self,$$20.$$arity=1,$$20)),indent=self.compiler.$parser_indent(),str=$truthy(vars["$empty?"]())?"":"var "+vars.$join(", ")+";\n",$truthy(self.$ivars()["$empty?"]())||(str=$rb_plus(str,""+indent+iv.$join(indent))),$truthy(self.$gvars()["$empty?"]())||(str=$rb_plus(str,""+indent+gv.$join(indent))),result=$truthy($truthy($ret_or_7=self["$class?"]())?self.proto_ivars["$empty?"]()["$!"]():$ret_or_7)?str+"\n"+indent+$send(self.proto_ivars,"map",[],(($$21=function(i){null==$$21.$$s||$$21.$$s;return null==i&&(i=nil),"self.$$prototype"+i}).$$s=self,$$21.$$arity=1,$$21)).$join(" = ")+" = nil;":str,self.$fragment(result)},$ScopeNode_new_refinements_temp$53.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$add_scope_ivar",$ScopeNode_new_refinements_temp$53=function(ivar){return $truthy(this["$def_in_class?"]())?this.parent.$add_proto_ivar(ivar):$truthy(this.ivars["$include?"](ivar))?nil:this.ivars["$<<"](ivar)},$ScopeNode_new_refinements_temp$53.$$arity=1),Opal.def($ScopeNode_refinements_temp$54,"$add_scope_gvar",$ScopeNode_new_refinements_temp$53=function(gvar){return $truthy(this.gvars["$include?"](gvar))?nil:this.gvars["$<<"](gvar)},$ScopeNode_new_refinements_temp$53.$$arity=1),Opal.def($ScopeNode_refinements_temp$54,"$add_proto_ivar",$ScopeNode_new_refinements_temp$53=function(ivar){return $truthy(this.proto_ivars["$include?"](ivar))?nil:this.proto_ivars["$<<"](ivar)},$ScopeNode_new_refinements_temp$53.$$arity=1),Opal.def($ScopeNode_refinements_temp$54,"$add_arg",$ScopeNode_new_refinements_temp$53=function(arg){return $truthy(this.args["$include?"](arg))||this.args["$<<"](arg),arg},$ScopeNode_new_refinements_temp$53.$$arity=1),Opal.def($ScopeNode_refinements_temp$54,"$add_scope_local",$ScopeNode_new_refinements_temp$53=function(local){return $truthy(this["$has_local?"](local))?nil:this.locals["$<<"](local)},$ScopeNode_new_refinements_temp$53.$$arity=1),Opal.def($ScopeNode_refinements_temp$54,"$has_local?",$ScopeNode_new_refinements_temp$53=function(local){var self=this,$ret_or_8=nil,$ret_or_9=nil,$ret_or_10=nil;return!!$truthy($truthy($ret_or_8=$truthy($ret_or_9=self.locals["$include?"](local))?$ret_or_9:self.args["$include?"](local))?$ret_or_8:self.temps["$include?"](local))||!!$truthy($truthy($ret_or_10=self.parent)?self.type["$=="]("iter"):$ret_or_10)&&self.parent["$has_local?"](local)},$ScopeNode_new_refinements_temp$53.$$arity=1),Opal.def($ScopeNode_refinements_temp$54,"$scope_locals",$ScopeNode_new_refinements_temp$53=function(){var self=this,$ret_or_11=nil;return self.locals["$|"](self.args)["$|"]($truthy($truthy($ret_or_11=self.parent)?self.type["$=="]("iter"):$ret_or_11)?self.parent.$scope_locals():[])},$ScopeNode_new_refinements_temp$53.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$add_scope_temp",$ScopeNode_new_refinements_temp$53=function(tmp){return $truthy(this["$has_temp?"](tmp))?nil:this.temps.$push(tmp)},$ScopeNode_new_refinements_temp$53.$$arity=1),Opal.def($ScopeNode_refinements_temp$54,"$has_temp?",$ScopeNode_new_refinements_temp$53=function(tmp){return this.temps["$include?"](tmp)},$ScopeNode_new_refinements_temp$53.$$arity=1),Opal.def($ScopeNode_refinements_temp$54,"$new_temp",$ScopeNode_new_refinements_temp$53=function(){var tmp;return $truthy(this.queue["$empty?"]())?(tmp=this.$next_temp(),this.temps["$<<"](tmp),tmp):this.queue.$pop()},$ScopeNode_new_refinements_temp$53.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$next_temp",$ScopeNode_new_refinements_temp$53=function(){var $$33,self=this,tmp=nil,tmp=nil;return function(){var $brk=Opal.new_brk();try{$send(self,"loop",[],(($$33=function(){var self=null==$$33.$$s?this:$$33.$$s;if(null==self.unique&&(self.unique=nil),tmp="$"+self.unique,self.unique=self.unique.$succ(),$truthy(self["$has_local?"](tmp)))return nil;Opal.brk(nil,$brk)}).$$s=self,$$33.$$brk=$brk,$$33.$$arity=0,$$33))}catch(err){if(err===$brk)return err.$v;throw err}}(),tmp},$ScopeNode_new_refinements_temp$53.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$queue_temp",$ScopeNode_new_refinements_temp$53=function(name){return this.queue["$<<"](name)},$ScopeNode_new_refinements_temp$53.$$arity=1),Opal.def($ScopeNode_refinements_temp$54,"$push_while",$ScopeNode_new_refinements_temp$53=function(){var info=$hash2([],{});return this.while_stack.$push(info),info},$ScopeNode_new_refinements_temp$53.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$pop_while",$ScopeNode_new_refinements_temp$53=function(){return this.while_stack.$pop()},$ScopeNode_new_refinements_temp$53.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$in_while?",$ScopeNode_new_refinements_temp$53=function(){return this.while_stack["$empty?"]()["$!"]()},$ScopeNode_new_refinements_temp$53.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$uses_block!",$ScopeNode_new_refinements_temp$53=function(){var self=this,$ret_or_12=nil;return $truthy($truthy($ret_or_12=self.type["$=="]("iter"))?self.parent:$ret_or_12)?self.parent["$uses_block!"]():(self.uses_block=!0,self["$identify!"]())},$ScopeNode_new_refinements_temp$53.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$identify!",$ScopeNode_new_refinements_temp$53=function(name){var self=this,$ret_or_13=nil,$ret_or_14=nil,$ret_or_15=nil;return null==name&&(name=nil),$truthy(self.identity)||(name=$truthy($ret_or_13=name)?$ret_or_13:[$truthy($ret_or_14=self.$parent())?$truthy($ret_or_15=self.$parent().$name())?$ret_or_15:self.$parent().$scope_name():$ret_or_14,self.$mid()].$compact().$join("_"),self.identity=self.compiler.$unique_temp(name),$truthy(self.parent)&&self.parent.$add_scope_temp(self.identity)),self.identity},$ScopeNode_new_refinements_temp$53.$$arity=-1),$ScopeNode_refinements_temp$54.$attr_reader("identity"),Opal.def($ScopeNode_refinements_temp$54,"$find_parent_def",$ScopeNode_new_refinements_temp$53=function(){for(var scope=nil,$ret_or_16=nil,scope=this;$truthy(scope=scope.$parent());)if($truthy($truthy($ret_or_16=scope["$def?"]())?$ret_or_16:scope["$lambda?"]()))return scope;return nil},$ScopeNode_new_refinements_temp$53.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$super_chain",$ScopeNode_new_refinements_temp$53=function(){for(var chain=nil,scope=nil,defn=nil,mid=nil,$a=[[],this,"null","null"],chain=$a[0],scope=$a[1],defn=$a[2],mid=$a[3];$truthy(scope);){if(!scope.$type()["$=="]("iter")){if($truthy(["def","defs"]["$include?"](scope.$type()))){defn=scope["$identify!"](),mid="'"+scope.$mid()+"'";break}break}chain["$<<"](scope["$identify!"]()),$truthy(scope.$parent())&&(scope=scope.$parent())}return[chain,defn,mid]},$ScopeNode_new_refinements_temp$53.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$uses_block?",$ScopeNode_new_refinements_temp$53=function(){return this.uses_block},$ScopeNode_new_refinements_temp$53.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$has_rescue_else?",$ScopeNode_new_refinements_temp$53=function(){return this.$rescue_else_sexp()["$nil?"]()["$!"]()},$ScopeNode_new_refinements_temp$53.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$in_rescue",$ScopeNode_in_rescue$44=function(node){var result,$iter=$ScopeNode_in_rescue$44.$$p,$yield=$iter||nil,self=this,$ret_or_17=nil;return $iter&&($ScopeNode_in_rescue$44.$$p=null),self.rescues=$truthy($ret_or_17=self.rescues)?$ret_or_17:[],self.rescues.$push(node),result=Opal.yieldX($yield,[]),self.rescues.$pop(),result},$ScopeNode_in_rescue$44.$$arity=1),Opal.def($ScopeNode_refinements_temp$54,"$current_rescue",$ScopeNode_new_refinements_temp$53=function(){return this.rescues.$last()},$ScopeNode_new_refinements_temp$53.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$in_resbody",$ScopeNode_in_resbody$46=function(){var result,$iter=$ScopeNode_in_resbody$46.$$p,$yield=$iter||nil;return $iter&&($ScopeNode_in_resbody$46.$$p=null),$yield===nil?nil:(this.in_resbody=!0,result=Opal.yieldX($yield,[]),this.in_resbody=!1,result)},$ScopeNode_in_resbody$46.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$in_resbody?",$ScopeNode_new_refinements_temp$53=function(){return this.in_resbody},$ScopeNode_new_refinements_temp$53.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$in_ensure",$ScopeNode_in_ensure$48=function(){var result,$iter=$ScopeNode_in_ensure$48.$$p,$yield=$iter||nil;return $iter&&($ScopeNode_in_ensure$48.$$p=null),$yield===nil?nil:(this.in_ensure=!0,result=Opal.yieldX($yield,[]),this.in_ensure=!1,result)},$ScopeNode_in_ensure$48.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$in_ensure?",$ScopeNode_new_refinements_temp$53=function(){return this.in_ensure},$ScopeNode_new_refinements_temp$53.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$gen_retry_id",$ScopeNode_new_refinements_temp$53=function(){var self=this,$ret_or_18=nil;return self.next_retry_id=$truthy($ret_or_18=self.next_retry_id)?$ret_or_18:"retry_0",self.next_retry_id=self.next_retry_id.$succ()},$ScopeNode_new_refinements_temp$53.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$accepts_using?",$ScopeNode_new_refinements_temp$53=function(){return[$$($nesting,"TopNode"),$$($nesting,"ModuleNode"),$$($nesting,"ClassNode"),$$($nesting,"IterNode")]["$include?"](this.$class())},$ScopeNode_new_refinements_temp$53.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$collect_refinements_temps",$ScopeNode_new_refinements_temp$53=function(temps){return null==temps&&(temps=[]),$truthy(this.refinements_temp)&&temps["$<<"](this.refinements_temp),$truthy(this.$parent())?this.$parent().$collect_refinements_temps(temps):temps},$ScopeNode_new_refinements_temp$53.$$arity=-1),Opal.def($ScopeNode_refinements_temp$54,"$new_refinements_temp",$ScopeNode_new_refinements_temp$53=function(){var var$=this.$compiler().$unique_temp("$refn");return this.$add_scope_local(var$),var$},$ScopeNode_new_refinements_temp$53.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$refinements_temp",$ScopeNode_refinements_temp$54=function(){var $a=[this.refinements_temp,this.$new_refinements_temp()],curr=$a[1];return[$a[0],this.refinements_temp=curr]},$ScopeNode_refinements_temp$54.$$arity=0),nil&&"refinements_temp"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/module"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send=Opal.send,$truthy=Opal.truthy;return Opal.add_stubs(["$require","$handle","$children","$name_and_base","$helper","$push","$line","$in_scope","$name=","$scope","$-","$compile_body","$private","$cid","$nil?","$expr","$add_temp","$stmt","$returns","$compiler","$body","$s","$empty_line","$to_vars"]),self.$require("opal/nodes/scope"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$ModuleNode_compile_body$4,$ModuleNode_name_and_base$3){$ModuleNode_compile_body$4=$klass($base,$ModuleNode_compile_body$4,"ModuleNode"),[$ModuleNode_compile_body$4].concat($ModuleNode_name_and_base$3);return $ModuleNode_compile_body$4.$handle("module"),$ModuleNode_compile_body$4.$children("cid","body"),Opal.def($ModuleNode_compile_body$4,"$compile",$ModuleNode_name_and_base$3=function(){var $$2,$a=this.$name_and_base(),$a=Opal.to_ary($a),name=null==$a[0]?nil:$a[0],base=null==$a[1]?nil:$a[1];return this.$helper("module"),this.$push("(function($base, $parent_nesting) {"),this.$line("  var self = $module($base, '"+name+"');"),$send(this,"in_scope",[],(($$2=function(){var rhs,self=null==$$2.$$s?this:$$2.$$s,lhs=nil,lhs=[name];return $send(self.$scope(),"name=",Opal.to_a(lhs)),rhs=1,"number"==typeof(lhs=lhs.length)&&"number"==typeof rhs||lhs["$-"](rhs),self.$compile_body()}).$$s=this,$$2.$$arity=0,$$2)),this.$line("})(",base,", $nesting)")},$ModuleNode_name_and_base$3.$$arity=0),$ModuleNode_compile_body$4.$private(),Opal.def($ModuleNode_compile_body$4,"$name_and_base",$ModuleNode_name_and_base$3=function(){var base=nil,$a=this.$cid().$children(),$a=Opal.to_ary($a),base=null==$a[0]?nil:$a[0],name=null==$a[1]?nil:$a[1];return $truthy(base["$nil?"]())?[name,"$nesting[0]"]:[name,this.$expr(base)]},$ModuleNode_name_and_base$3.$$arity=0),Opal.def($ModuleNode_compile_body$4,"$compile_body",$ModuleNode_compile_body$4=function(){var body_code,self=this,$ret_or_1=nil;return self.$add_temp("$nesting = [self].concat($parent_nesting)"),body_code=self.$stmt(self.$compiler().$returns($truthy($ret_or_1=self.$body())?$ret_or_1:self.$s("nil"))),self.$empty_line(),self.$line(self.$scope().$to_vars()),self.$line(body_code)},$ModuleNode_compile_body$4.$$arity=0),nil&&"compile_body"}($nesting[0],$$($nesting,"ScopeNode"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/class"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send=Opal.send,$truthy=Opal.truthy;return Opal.add_stubs(["$require","$handle","$children","$name_and_base","$helper","$push","$line","$in_scope","$name=","$scope","$-","$compile_body","$super_code","$sup","$expr"]),self.$require("opal/nodes/module"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$ClassNode_super_code$3,$ClassNode_compile$1){$ClassNode_super_code$3=$klass($base,$ClassNode_super_code$3,"ClassNode"),[$ClassNode_super_code$3].concat($ClassNode_compile$1);return $ClassNode_super_code$3.$handle("class"),$ClassNode_super_code$3.$children("cid","sup","body"),Opal.def($ClassNode_super_code$3,"$compile",$ClassNode_compile$1=function(){var $$2,$a=this.$name_and_base(),$a=Opal.to_ary($a),name=null==$a[0]?nil:$a[0],base=null==$a[1]?nil:$a[1];return this.$helper("klass"),this.$push("(function($base, $super, $parent_nesting) {"),this.$line("  var self = $klass($base, $super, '"+name+"');"),$send(this,"in_scope",[],(($$2=function(){var rhs,self=null==$$2.$$s?this:$$2.$$s,lhs=nil,lhs=[name];return $send(self.$scope(),"name=",Opal.to_a(lhs)),rhs=1,"number"==typeof(lhs=lhs.length)&&"number"==typeof rhs||lhs["$-"](rhs),self.$compile_body()}).$$s=this,$$2.$$arity=0,$$2)),this.$line("})(",base,", ",this.$super_code(),", $nesting)")},$ClassNode_compile$1.$$arity=0),Opal.def($ClassNode_super_code$3,"$super_code",$ClassNode_super_code$3=function(){return $truthy(this.$sup())?this.$expr(this.$sup()):"null"},$ClassNode_super_code$3.$$arity=0),nil&&"super_code"}($nesting[0],$$($nesting,"ModuleNode"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/singleton_class"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send=Opal.send;return Opal.add_stubs(["$require","$handle","$children","$push","$in_scope","$add_temp","$stmt","$returns","$compiler","$body","$line","$to_vars","$scope","$recv","$object"]),self.$require("opal/nodes/scope"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$SingletonClassNode_compile$1,$parent_nesting){$SingletonClassNode_compile$1=$klass($base,$SingletonClassNode_compile$1,"SingletonClassNode"),[$SingletonClassNode_compile$1].concat($parent_nesting);return $SingletonClassNode_compile$1.$handle("sclass"),$SingletonClassNode_compile$1.$children("object","body"),Opal.def($SingletonClassNode_compile$1,"$compile",$SingletonClassNode_compile$1=function(){var $$2;return this.$push("(function(self, $parent_nesting) {"),$send(this,"in_scope",[],(($$2=function(){var body_stmt,self=null==$$2.$$s?this:$$2.$$s;return self.$add_temp("$nesting = [self].concat($parent_nesting)"),body_stmt=self.$stmt(self.$compiler().$returns(self.$body())),self.$line(self.$scope().$to_vars()),self.$line(body_stmt)}).$$s=this,$$2.$$arity=0,$$2)),this.$line("})(Opal.get_singleton_class(",this.$recv(this.$object()),"), $nesting)")},$SingletonClassNode_compile$1.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"ScopeNode"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/arg"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass;return Opal.add_stubs(["$require","$handle","$children","$add_arg","$scope","$name","$push","$to_s"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Args")].concat($nesting);return function($base,$ArgNode_compile$1,$parent_nesting){$ArgNode_compile$1=$klass($base,$ArgNode_compile$1,"ArgNode"),[$ArgNode_compile$1].concat($parent_nesting);return $ArgNode_compile$1.$handle("arg"),$ArgNode_compile$1.$children("name"),Opal.def($ArgNode_compile$1,"$compile",$ArgNode_compile$1=function(){return this.$scope().$add_arg(this.$name()),this.$push(this.$name().$to_s())},$ArgNode_compile$1.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/arity_check"]=function(Opal){function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$send=Opal.send,$truthy=Opal.truthy;return Opal.add_stubs(["$require","$handle","$children","$new","$args_node","$args","$optargs","$restarg","$postargs","$kwargs","$kwoptargs","$kwrestarg","$kwnilarg","$arity","$arity=","$scope","$-","$arity_check?","$compiler","$empty?","$arity_checks","$helper","$inspect","$to_s","$mid","$line","$push","$join","$compact","$size","$all_args","$!","$-@","$<","$+","$>","$<<","$any?","$has_only_optional_kwargs?","$negative_arity","$positive_arity","$select","$include?","$type","$has_required_kwargs?","$all?","$==","$def?","$class_scope?","$top?","$parent","$class?","$name","$module?","$identity"]),self.$require("opal/nodes/base"),self.$require("opal/rewriters/arguments"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$ArityCheckNode_has_required_kwargs$ques$12,$ArityCheckNode_has_only_optional_kwargs$ques$10){var $ArityCheckNode_initialize$1,$nesting=[$ArityCheckNode_has_required_kwargs$ques$12=$klass($base,$ArityCheckNode_has_required_kwargs$ques$12,"ArityCheckNode")].concat($ArityCheckNode_has_only_optional_kwargs$ques$10);$ArityCheckNode_has_required_kwargs$ques$12.$$prototype.kwargs=$ArityCheckNode_has_required_kwargs$ques$12.$$prototype.kwoptargs=$ArityCheckNode_has_required_kwargs$ques$12.$$prototype.kwrestarg=$ArityCheckNode_has_required_kwargs$ques$12.$$prototype.all_args=$ArityCheckNode_has_required_kwargs$ques$12.$$prototype.args=$ArityCheckNode_has_required_kwargs$ques$12.$$prototype.optargs=$ArityCheckNode_has_required_kwargs$ques$12.$$prototype.restarg=$ArityCheckNode_has_required_kwargs$ques$12.$$prototype.postargs=$ArityCheckNode_has_required_kwargs$ques$12.$$prototype.arity_checks=nil,$ArityCheckNode_has_required_kwargs$ques$12.$handle("arity_check"),$ArityCheckNode_has_required_kwargs$ques$12.$children("args_node"),Opal.def($ArityCheckNode_has_required_kwargs$ques$12,"$initialize",$ArityCheckNode_initialize$1=function($a){var $zuper_ii,$iter=$ArityCheckNode_initialize$1.$$p,arguments$=nil,$zuper=nil,$zuper_i=nil;for($iter&&($ArityCheckNode_initialize$1.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return Opal.slice.call(arguments,0,arguments.length),$send2(this,$find_super(this,"initialize",$ArityCheckNode_initialize$1,!1,!0),"initialize",$zuper,$iter),arguments$=$$$($$($nesting,"Rewriters"),"Arguments").$new(this.$args_node().$children()),this.args=arguments$.$args(),this.optargs=arguments$.$optargs(),this.restarg=arguments$.$restarg(),this.postargs=arguments$.$postargs(),this.kwargs=arguments$.$kwargs(),this.kwoptargs=arguments$.$kwoptargs(),this.kwrestarg=arguments$.$kwrestarg(),this.kwnilarg=arguments$.$kwnilarg()},$ArityCheckNode_initialize$1.$$arity=-1),Opal.def($ArityCheckNode_has_required_kwargs$ques$12,"$compile",$ArityCheckNode_has_only_optional_kwargs$ques$10=function(){var meth,$writer=[this.$arity()];return $send(this.$scope(),"arity=",Opal.to_a($writer)),$rb_minus($writer.length,1),!$truthy(this.$compiler()["$arity_check?"]())||$truthy(this.$arity_checks()["$empty?"]())?nil:(this.$helper("ac"),meth=this.$scope().$mid().$to_s().$inspect(),this.$line("var $arity = arguments.length;"),this.$push(" if ("+this.$arity_checks().$join(" || ")+") { $ac($arity, "+this.$arity()+", this, "+meth+"); }"))},$ArityCheckNode_has_only_optional_kwargs$ques$10.$$arity=0),Opal.def($ArityCheckNode_has_required_kwargs$ques$12,"$kwargs",$ArityCheckNode_has_only_optional_kwargs$ques$10=function(){return[].concat(Opal.to_a(this.kwargs)).concat(Opal.to_a(this.kwoptargs)).concat([this.kwrestarg]).$compact()},$ArityCheckNode_has_only_optional_kwargs$ques$10.$$arity=0),Opal.def($ArityCheckNode_has_required_kwargs$ques$12,"$all_args",$ArityCheckNode_has_only_optional_kwargs$ques$10=function(){var self=this,$ret_or_1=nil;return self.all_args=$truthy($ret_or_1=self.all_args)?$ret_or_1:[].concat(Opal.to_a(self.args)).concat(Opal.to_a(self.optargs)).concat([self.restarg]).concat(Opal.to_a(self.postargs)).concat(Opal.to_a(self.$kwargs())).$compact()},$ArityCheckNode_has_only_optional_kwargs$ques$10.$$arity=0),Opal.def($ArityCheckNode_has_required_kwargs$ques$12,"$arity_checks",$ArityCheckNode_has_only_optional_kwargs$ques$10=function(){var $a,min_arity,max_arity,self=this,arity=nil,lhs=nil,rhs=nil;return $truthy(null!=($a=self.arity_checks)&&$a!==nil?"instance-variable":nil)||(arity=$rb_minus(arity=self.$all_args().$size(),self.optargs.$size()),$truthy(self.restarg)&&(arity=$rb_minus(arity,1)),arity=$rb_minus(arity,self.$kwargs().$size()),$truthy($truthy(lhs=$truthy(rhs=self.optargs["$empty?"]()["$!"]())?rhs:self.$kwargs()["$empty?"]()["$!"]())?lhs:self.restarg)&&(arity=$rb_minus(arity["$-@"](),1)),self.arity_checks=[],$truthy((rhs=0,"number"==typeof(lhs=arity)&&"number"==typeof rhs?lhs<rhs:lhs["$<"](rhs)))?(min_arity=$rb_plus(arity,1)["$-@"](),max_arity=self.$all_args().$size(),$truthy(function(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?rhs<lhs:lhs["$>"](rhs)}(min_arity,0))&&self.arity_checks["$<<"]("$arity < "+min_arity),$truthy(self.restarg)||self.arity_checks["$<<"]("$arity > "+max_arity)):self.arity_checks["$<<"]("$arity !== "+arity)),self.arity_checks},$ArityCheckNode_has_only_optional_kwargs$ques$10.$$arity=0),Opal.def($ArityCheckNode_has_required_kwargs$ques$12,"$arity",$ArityCheckNode_has_only_optional_kwargs$ques$10=function(){var self=this,$ret_or_4=nil,$ret_or_5=nil;return $truthy($truthy($ret_or_4=$truthy($ret_or_5=self.restarg)?$ret_or_5:self.optargs["$any?"]())?$ret_or_4:self["$has_only_optional_kwargs?"]())?self.$negative_arity():self.$positive_arity()},$ArityCheckNode_has_only_optional_kwargs$ques$10.$$arity=0),Opal.def($ArityCheckNode_has_required_kwargs$ques$12,"$negative_arity",$ArityCheckNode_has_only_optional_kwargs$ques$10=function(){var $$8,result=nil,result=$send(this.$all_args(),"select",[],(($$8=function(arg){null==$$8.$$s||$$8.$$s;return null==arg&&(arg=nil),["arg","mlhs"]["$include?"](arg.$type())}).$$s=this,$$8.$$arity=1,$$8)).$size();return $truthy(this["$has_required_kwargs?"]())&&(result=$rb_plus(result,1)),result=$rb_minus(result["$-@"](),1)},$ArityCheckNode_has_only_optional_kwargs$ques$10.$$arity=0),Opal.def($ArityCheckNode_has_required_kwargs$ques$12,"$positive_arity",$ArityCheckNode_has_only_optional_kwargs$ques$10=function(){var result=nil;return result=$rb_minus(result=this.$all_args().$size(),this.$kwargs().$size()),$truthy(this.$kwargs()["$any?"]())&&(result=$rb_plus(result,1)),result},$ArityCheckNode_has_only_optional_kwargs$ques$10.$$arity=0),Opal.def($ArityCheckNode_has_required_kwargs$ques$12,"$has_only_optional_kwargs?",$ArityCheckNode_has_only_optional_kwargs$ques$10=function(){var $$11,$ret_or_6;return $truthy($ret_or_6=this.$kwargs()["$any?"]())?$send(this.$kwargs(),"all?",[],(($$11=function(arg){null==$$11.$$s||$$11.$$s;return null==arg&&(arg=nil),["kwoptarg","kwrestarg"]["$include?"](arg.$type())}).$$s=this,$$11.$$arity=1,$$11)):$ret_or_6},$ArityCheckNode_has_only_optional_kwargs$ques$10.$$arity=0),Opal.def($ArityCheckNode_has_required_kwargs$ques$12,"$has_required_kwargs?",$ArityCheckNode_has_required_kwargs$ques$12=function(){var $$13;return $send(this.$kwargs(),"any?",[],(($$13=function(arg){null==$$13.$$s||$$13.$$s;return null==arg&&(arg=nil),arg.$type()["$=="]("kwarg")}).$$s=this,$$13.$$arity=1,$$13))},$ArityCheckNode_has_required_kwargs$ques$12.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$IterArityCheckNode_compile$14,$parent_nesting){$IterArityCheckNode_compile$14=$klass($base,$IterArityCheckNode_compile$14,"IterArityCheckNode"),[$IterArityCheckNode_compile$14].concat($parent_nesting);return $IterArityCheckNode_compile$14.$handle("iter_arity_check"),Opal.def($IterArityCheckNode_compile$14,"$compile",$IterArityCheckNode_compile$14=function(){var context,identity,parent_scope=nil,$ret_or_7=nil,$ret_or_8=nil,$writer=[this.$arity()];if($send(this.$scope(),"arity=",Opal.to_a($writer)),$rb_minus($writer.length,1),!$truthy(this.$compiler()["$arity_check?"]()))return nil;if($truthy(this.$arity_checks()["$empty?"]()))return nil;for(parent_scope=this.$scope();!$truthy($truthy($ret_or_7=$truthy($ret_or_8=parent_scope["$def?"]())?$ret_or_8:parent_scope["$class_scope?"]())?$ret_or_7:parent_scope["$top?"]());)parent_scope=parent_scope.$parent();return context=$truthy(parent_scope["$top?"]())?"'<main>'":$truthy(parent_scope["$def?"]())?"'"+parent_scope.$mid()+"'":$truthy(parent_scope["$class?"]())?"'<class:"+parent_scope.$name()+">'":$truthy(parent_scope["$module?"]())?"'<module:"+parent_scope.$name()+">'":nil,identity=this.$scope().$identity(),this.$line("if ("+identity+".$$is_lambda || "+identity+".$$define_meth) {"),this.$line("  var $arity = arguments.length;"),this.$line("  if ("+this.$arity_checks().$join(" || ")+") { Opal.block_ac($arity, "+this.$arity()+", "+context+"); }"),this.$line("}")},$IterArityCheckNode_compile$14.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"ArityCheckNode"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/ensure_kwargs_are_kwargs"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass;return Opal.add_stubs(["$require","$handle","$helper","$line"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Args")].concat($nesting);return function($base,$EnsureKwargsAreKwargs_compile$1,$parent_nesting){$EnsureKwargsAreKwargs_compile$1=$klass($base,$EnsureKwargsAreKwargs_compile$1,"EnsureKwargsAreKwargs"),[$EnsureKwargsAreKwargs_compile$1].concat($parent_nesting);return $EnsureKwargsAreKwargs_compile$1.$handle("ensure_kwargs_are_kwargs"),Opal.def($EnsureKwargsAreKwargs_compile$1,"$compile",$EnsureKwargsAreKwargs_compile$1=function(){return this.$helper("hash2"),this.$line("if ($kwargs == null) {"),this.$line("  $kwargs = $hash2([], {});"),this.$line("} else if (!$kwargs.$$is_hash) {"),this.$line("  throw Opal.ArgumentError.$new('expected kwargs');"),this.$line("}")},$EnsureKwargsAreKwargs_compile$1.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/extract_block_arg"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send=Opal.send;return Opal.add_stubs(["$require","$handle","$children","$uses_block!","$scope","$add_arg","$name","$block_name=","$-","$identity","$block_name","$add_temp","$line"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Args")].concat($nesting);return function($base,$ExtractBlockarg_compile$1,$parent_nesting){$ExtractBlockarg_compile$1=$klass($base,$ExtractBlockarg_compile$1,"ExtractBlockarg"),[$ExtractBlockarg_compile$1].concat($parent_nesting);return $ExtractBlockarg_compile$1.$handle("extract_blockarg"),$ExtractBlockarg_compile$1.$children("name"),Opal.def($ExtractBlockarg_compile$1,"$compile",$ExtractBlockarg_compile$1=function(){var scope_name,yielder,rhs,lhs=nil;return this.$scope()["$uses_block!"](),this.$scope().$add_arg(this.$name()),lhs=[this.$name()],$send(this.$scope(),"block_name=",Opal.to_a(lhs)),rhs=1,"number"==typeof(lhs=lhs.length)&&"number"==typeof rhs||lhs["$-"](rhs),scope_name=this.$scope().$identity(),yielder=this.$scope().$block_name(),this.$add_temp("$iter = "+scope_name+".$$p"),this.$add_temp(yielder+" = $iter || nil"),this.$line("if ($iter) "+scope_name+".$$p = null;")},$ExtractBlockarg_compile$1.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/extract_kwarg"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass;return Opal.add_stubs(["$require","$handle","$children","$[]","$meta","$<<","$used_kwargs","$scope","$add_temp","$lvar_name","$line","$inspect","$to_s"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Args")].concat($nesting);return function($base,$ExtractKwarg_compile$1,$parent_nesting){$ExtractKwarg_compile$1=$klass($base,$ExtractKwarg_compile$1,"ExtractKwarg"),[$ExtractKwarg_compile$1].concat($parent_nesting);return $ExtractKwarg_compile$1.$$prototype.sexp=nil,$ExtractKwarg_compile$1.$handle("extract_kwarg"),$ExtractKwarg_compile$1.$children("lvar_name"),Opal.def($ExtractKwarg_compile$1,"$compile",$ExtractKwarg_compile$1=function(){var key_name=nil,key_name=this.sexp.$meta()["$[]"]("arg_name");return this.$scope().$used_kwargs()["$<<"](key_name),this.$add_temp(this.$lvar_name()),this.$line("if (!Opal.hasOwnProperty.call($kwargs.$$smap, '"+key_name+"')) {"),this.$line("  throw Opal.ArgumentError.$new('missing keyword: "+key_name+"');"),this.$line("}"),this.$line(this.$lvar_name()+" = $kwargs.$$smap["+key_name.$to_s().$inspect()+"];")},$ExtractKwarg_compile$1.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/extract_kwargs"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass;return Opal.add_stubs(["$require","$handle","$add_temp","$line"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Args")].concat($nesting);return function($base,$ExtractKwargs_compile$1,$parent_nesting){$ExtractKwargs_compile$1=$klass($base,$ExtractKwargs_compile$1,"ExtractKwargs"),[$ExtractKwargs_compile$1].concat($parent_nesting);return $ExtractKwargs_compile$1.$handle("extract_kwargs"),Opal.def($ExtractKwargs_compile$1,"$compile",$ExtractKwargs_compile$1=function(){return this.$add_temp("$kwargs"),this.$line("$kwargs = Opal.extract_kwargs($post_args)")},$ExtractKwargs_compile$1.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/extract_kwoptarg"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass;return Opal.add_stubs(["$require","$handle","$children","$[]","$meta","$<<","$used_kwargs","$scope","$add_temp","$lvar_name","$line","$inspect","$to_s","$==","$default_value","$expr"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Args")].concat($nesting);return function($base,$ExtractKwoptarg_compile$1,$parent_nesting){$ExtractKwoptarg_compile$1=$klass($base,$ExtractKwoptarg_compile$1,"ExtractKwoptarg"),[$ExtractKwoptarg_compile$1].concat($parent_nesting);return $ExtractKwoptarg_compile$1.$$prototype.sexp=nil,$ExtractKwoptarg_compile$1.$handle("extract_kwoptarg"),$ExtractKwoptarg_compile$1.$children("lvar_name","default_value"),Opal.def($ExtractKwoptarg_compile$1,"$compile",$ExtractKwoptarg_compile$1=function(){var key_name=nil,key_name=this.sexp.$meta()["$[]"]("arg_name");return this.$scope().$used_kwargs()["$<<"](key_name),this.$add_temp(this.$lvar_name()),this.$line(this.$lvar_name()+" = $kwargs.$$smap["+key_name.$to_s().$inspect()+"];"),this.$default_value().$children()["$[]"](1)["$=="]("undefined")?nil:(this.$line("if ("+this.$lvar_name()+" == null) {"),this.$line("  "+this.$lvar_name()+" = ",this.$expr(this.$default_value())),this.$line("}"))},$ExtractKwoptarg_compile$1.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/extract_kwrestarg"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send;return Opal.add_stubs(["$require","$handle","$children","$name","$add_temp","$line","$used_kwargs","$map","$scope","$join"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Args")].concat($nesting);return function($base,$ExtractKwrestarg_used_kwargs$2,$ExtractKwrestarg_compile$1){$ExtractKwrestarg_used_kwargs$2=$klass($base,$ExtractKwrestarg_used_kwargs$2,"ExtractKwrestarg"),[$ExtractKwrestarg_used_kwargs$2].concat($ExtractKwrestarg_compile$1);return $ExtractKwrestarg_used_kwargs$2.$handle("extract_kwrestarg"),$ExtractKwrestarg_used_kwargs$2.$children("name"),Opal.def($ExtractKwrestarg_used_kwargs$2,"$compile",$ExtractKwrestarg_compile$1=function(){return $truthy(this.$name())?(this.$add_temp(this.$name()),this.$line(this.$name()+" = Opal.kwrestargs($kwargs, "+this.$used_kwargs()+");")):nil},$ExtractKwrestarg_compile$1.$$arity=0),Opal.def($ExtractKwrestarg_used_kwargs$2,"$used_kwargs",$ExtractKwrestarg_used_kwargs$2=function(){var $$3;return"{"+$send(this.$scope().$used_kwargs(),"map",[],(($$3=function(arg_name){null==$$3.$$s||$$3.$$s;return null==arg_name&&(arg_name=nil),"'"+arg_name+"': true"}).$$s=this,$$3.$$arity=1,$$3)).$join(",")+"}"},$ExtractKwrestarg_used_kwargs$2.$$arity=0),nil&&"used_kwargs"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/extract_optarg"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass;return Opal.add_stubs(["$require","$handle","$children","$==","$[]","$default_value","$line","$name","$expr"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Args")].concat($nesting);return function($base,$ExtractOptargNode_compile$1,$parent_nesting){$ExtractOptargNode_compile$1=$klass($base,$ExtractOptargNode_compile$1,"ExtractOptargNode"),[$ExtractOptargNode_compile$1].concat($parent_nesting);return $ExtractOptargNode_compile$1.$handle("extract_optarg"),$ExtractOptargNode_compile$1.$children("name","default_value"),Opal.def($ExtractOptargNode_compile$1,"$compile",$ExtractOptargNode_compile$1=function(){return this.$default_value().$children()["$[]"](1)["$=="]("undefined")?nil:(this.$line("if ("+this.$name()+" == null) {"),this.$line("  "+this.$name()+" = ",this.$expr(this.$default_value()),";"),this.$line("}"))},$ExtractOptargNode_compile$1.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/extract_post_arg"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass;return Opal.add_stubs(["$require","$handle","$children","$add_temp","$name","$line"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Args")].concat($nesting);return function($base,$ExtractPostArg_compile$1,$parent_nesting){$ExtractPostArg_compile$1=$klass($base,$ExtractPostArg_compile$1,"ExtractPostArg"),[$ExtractPostArg_compile$1].concat($parent_nesting);return $ExtractPostArg_compile$1.$handle("extract_post_arg"),$ExtractPostArg_compile$1.$children("name"),Opal.def($ExtractPostArg_compile$1,"$compile",$ExtractPostArg_compile$1=function(){return this.$add_temp(this.$name()),this.$line(this.$name()+" = $post_args[0];"),this.$line("$post_args.splice(0, 1);"),this.$line("if ("+this.$name()+" == null) {"),this.$line("  "+this.$name()+" = nil"),this.$line("}")},$ExtractPostArg_compile$1.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/extract_post_optarg"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass;return Opal.add_stubs(["$require","$handle","$children","$add_temp","$name","$line","$args_to_keep","$==","$[]","$default_value","$expr"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Args")].concat($nesting);return function($base,$ExtractPostOptarg_compile$1,$parent_nesting){$ExtractPostOptarg_compile$1=$klass($base,$ExtractPostOptarg_compile$1,"ExtractPostOptarg"),[$ExtractPostOptarg_compile$1].concat($parent_nesting);return $ExtractPostOptarg_compile$1.$handle("extract_post_optarg"),$ExtractPostOptarg_compile$1.$children("name","default_value","args_to_keep"),Opal.def($ExtractPostOptarg_compile$1,"$compile",$ExtractPostOptarg_compile$1=function(){return this.$add_temp(this.$name()),this.$line("if ($post_args.length > "+this.$args_to_keep()+") {"),this.$line("  "+this.$name()+" = $post_args[0];"),this.$line("  $post_args.splice(0, 1);"),this.$line("}"),this.$default_value().$children()["$[]"](1)["$=="]("undefined")?nil:(this.$line("if ("+this.$name()+" == null) {"),this.$line("  "+this.$name()+" = ",this.$expr(this.$default_value()),";"),this.$line("}"))},$ExtractPostOptarg_compile$1.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/extract_restarg"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy;return Opal.add_stubs(["$require","$handle","$children","$name","$add_temp","$==","$args_to_keep","$line","$!="]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Args")].concat($nesting);return function($base,$ExtractRestarg_compile$1,$parent_nesting){$ExtractRestarg_compile$1=$klass($base,$ExtractRestarg_compile$1,"ExtractRestarg"),[$ExtractRestarg_compile$1].concat($parent_nesting);return $ExtractRestarg_compile$1.$handle("extract_restarg"),$ExtractRestarg_compile$1.$children("name","args_to_keep"),Opal.def($ExtractRestarg_compile$1,"$compile",$ExtractRestarg_compile$1=function(){return $truthy(this.$name())?(this.$add_temp(this.$name()),this.$args_to_keep()["$=="](0)?this.$line(this.$name()+" = $post_args;"):this.$line(this.$name()+" = $post_args.splice(0, $post_args.length - "+this.$args_to_keep()+");")):$truthy(this.$args_to_keep()["$!="](0))?this.$line("$post_args.splice(0, $post_args.length - "+this.$args_to_keep()+");"):nil},$ExtractRestarg_compile$1.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/fake_arg"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass;return Opal.add_stubs(["$require","$handle","$next_temp","$scope","$add_arg","$push"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Args")].concat($nesting);return function($base,$FakeArgNode_compile$1,$parent_nesting){$FakeArgNode_compile$1=$klass($base,$FakeArgNode_compile$1,"FakeArgNode"),[$FakeArgNode_compile$1].concat($parent_nesting);return $FakeArgNode_compile$1.$handle("fake_arg"),Opal.def($FakeArgNode_compile$1,"$compile",$FakeArgNode_compile$1=function(){var name=this.$scope().$next_temp();return this.$scope().$add_arg(name),this.$push(name)},$FakeArgNode_compile$1.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/initialize_iterarg"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass;return Opal.add_stubs(["$require","$handle","$children","$line","$name"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Args")].concat($nesting);return function($base,$InitializeIterarg_compile$1,$parent_nesting){$InitializeIterarg_compile$1=$klass($base,$InitializeIterarg_compile$1,"InitializeIterarg"),[$InitializeIterarg_compile$1].concat($parent_nesting);return $InitializeIterarg_compile$1.$handle("initialize_iter_arg"),$InitializeIterarg_compile$1.$children("name"),Opal.def($InitializeIterarg_compile$1,"$compile",$InitializeIterarg_compile$1=function(){return this.$line("if ("+this.$name()+" == null) {"),this.$line("  "+this.$name()+" = nil;"),this.$line("}")},$InitializeIterarg_compile$1.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/initialize_shadowarg"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass;return Opal.add_stubs(["$require","$handle","$children","$<<","$locals","$scope","$name","$add_arg","$line"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Args")].concat($nesting);return function($base,$InitializeShadowarg_compile$1,$parent_nesting){$InitializeShadowarg_compile$1=$klass($base,$InitializeShadowarg_compile$1,"InitializeShadowarg"),[$InitializeShadowarg_compile$1].concat($parent_nesting);return $InitializeShadowarg_compile$1.$handle("initialize_shadowarg"),$InitializeShadowarg_compile$1.$children("name"),Opal.def($InitializeShadowarg_compile$1,"$compile",$InitializeShadowarg_compile$1=function(){return this.$scope().$locals()["$<<"](this.$name()),this.$scope().$add_arg(this.$name()),this.$line(this.$name()+" = nil;")},$InitializeShadowarg_compile$1.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/parameters"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$module=(Opal.$$$,Opal.$$,Opal.module),$klass=Opal.klass,$send=Opal.send,$truthy=Opal.truthy;return Opal.add_stubs(["$children","$map","$public_send","$type","$join","$compact","$=="]),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Args")].concat($nesting);return function($Parameters_on_shadowarg$13,$Parameters_on_kwnilarg$12){$Parameters_on_shadowarg$13=$klass($Parameters_on_shadowarg$13,null,"Parameters"),[$Parameters_on_shadowarg$13].concat($Parameters_on_kwnilarg$12);return $Parameters_on_shadowarg$13.$$prototype.args=nil,Opal.def($Parameters_on_shadowarg$13,"$initialize",$Parameters_on_kwnilarg$12=function(args){return this.args=args.$children()},$Parameters_on_kwnilarg$12.$$arity=1),Opal.def($Parameters_on_shadowarg$13,"$to_code",$Parameters_on_kwnilarg$12=function(){var $$3;return"["+$send(this.args,"map",[],(($$3=function(arg){var self=null==$$3.$$s?this:$$3.$$s;return null==arg&&(arg=nil),$send(self,"public_send",["on_"+arg.$type()].concat(Opal.to_a(arg)))}).$$s=this,$$3.$$arity=1,$$3)).$compact().$join(", ")+"]"},$Parameters_on_kwnilarg$12.$$arity=0),Opal.def($Parameters_on_shadowarg$13,"$on_arg",$Parameters_on_kwnilarg$12=function(arg_name){return"['req', '"+arg_name+"']"},$Parameters_on_kwnilarg$12.$$arity=1),Opal.def($Parameters_on_shadowarg$13,"$on_mlhs",$Parameters_on_kwnilarg$12=function($a){Opal.slice.call(arguments,0,arguments.length);return"['req']"},$Parameters_on_kwnilarg$12.$$arity=-1),Opal.def($Parameters_on_shadowarg$13,"$on_optarg",$Parameters_on_kwnilarg$12=function(arg_name){return"['opt', '"+arg_name+"']"},$Parameters_on_kwnilarg$12.$$arity=2),Opal.def($Parameters_on_shadowarg$13,"$on_restarg",$Parameters_on_kwnilarg$12=function(arg_name){return null==arg_name&&(arg_name=nil),$truthy(arg_name)?(arg_name["$=="]("fwd_rest_arg")&&(arg_name="*"),"['rest', '"+arg_name+"']"):"['rest']"},$Parameters_on_kwnilarg$12.$$arity=-1),Opal.def($Parameters_on_shadowarg$13,"$on_kwarg",$Parameters_on_kwnilarg$12=function(arg_name){return"['keyreq', '"+arg_name+"']"},$Parameters_on_kwnilarg$12.$$arity=1),Opal.def($Parameters_on_shadowarg$13,"$on_kwoptarg",$Parameters_on_kwnilarg$12=function(arg_name){return"['key', '"+arg_name+"']"},$Parameters_on_kwnilarg$12.$$arity=2),Opal.def($Parameters_on_shadowarg$13,"$on_kwrestarg",$Parameters_on_kwnilarg$12=function(arg_name){return null==arg_name&&(arg_name=nil),$truthy(arg_name)?"['keyrest', '"+arg_name+"']":"['keyrest']"},$Parameters_on_kwnilarg$12.$$arity=-1),Opal.def($Parameters_on_shadowarg$13,"$on_blockarg",$Parameters_on_kwnilarg$12=function(arg_name){return arg_name["$=="]("fwd_block_arg")&&(arg_name="&"),"['block', '"+arg_name+"']"},$Parameters_on_kwnilarg$12.$$arity=1),Opal.def($Parameters_on_shadowarg$13,"$on_kwnilarg",$Parameters_on_kwnilarg$12=function(){return"['nokey']"},$Parameters_on_kwnilarg$12.$$arity=0),Opal.def($Parameters_on_shadowarg$13,"$on_shadowarg",$Parameters_on_shadowarg$13=function(){return nil},$Parameters_on_shadowarg$13.$$arity=1),nil&&"on_shadowarg"}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/prepare_post_args"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass;return Opal.add_stubs(["$require","$handle","$children","$add_temp","$line","$offset"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Args")].concat($nesting);return function($base,$PreparePostArgs_compile$1,$parent_nesting){$PreparePostArgs_compile$1=$klass($base,$PreparePostArgs_compile$1,"PreparePostArgs"),[$PreparePostArgs_compile$1].concat($parent_nesting);return $PreparePostArgs_compile$1.$handle("prepare_post_args"),$PreparePostArgs_compile$1.$children("offset"),Opal.def($PreparePostArgs_compile$1,"$compile",$PreparePostArgs_compile$1=function(){return this.$add_temp("$post_args"),this.$line("$post_args = Opal.slice.call(arguments, "+this.$offset()+", arguments.length)")},$PreparePostArgs_compile$1.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args"]=function(Opal){function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}function $rb_gt(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?rhs<lhs:lhs["$>"](rhs)}var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$hash2=Opal.hash2,$send=Opal.send,$truthy=Opal.truthy;return Opal.add_stubs(["$require","$handle","$each_with_index","$children","$multiple_underscore?","$[]","$[]=","$-","$+","$>","$s","$type","$!=","$push","$process","$==","$count","$start_with?","$to_s","$first"]),self.$require("opal/nodes/base"),self.$require("opal/nodes/args/arg"),self.$require("opal/nodes/args/arity_check"),self.$require("opal/nodes/args/ensure_kwargs_are_kwargs"),self.$require("opal/nodes/args/extract_block_arg"),self.$require("opal/nodes/args/extract_kwarg"),self.$require("opal/nodes/args/extract_kwargs"),self.$require("opal/nodes/args/extract_kwoptarg"),self.$require("opal/nodes/args/extract_kwrestarg"),self.$require("opal/nodes/args/extract_optarg"),self.$require("opal/nodes/args/extract_post_arg"),self.$require("opal/nodes/args/extract_post_optarg"),self.$require("opal/nodes/args/extract_restarg"),self.$require("opal/nodes/args/fake_arg"),self.$require("opal/nodes/args/initialize_iterarg"),self.$require("opal/nodes/args/initialize_shadowarg"),self.$require("opal/nodes/args/parameters"),self.$require("opal/nodes/args/prepare_post_args"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$ArgsNode_multiple_underscore$ques$3,$ArgsNode_compile$1){$ArgsNode_multiple_underscore$ques$3=$klass($base,$ArgsNode_multiple_underscore$ques$3,"ArgsNode"),[$ArgsNode_multiple_underscore$ques$3].concat($ArgsNode_compile$1);return $ArgsNode_multiple_underscore$ques$3.$handle("args"),Opal.def($ArgsNode_multiple_underscore$ques$3,"$compile",$ArgsNode_compile$1=function(){var $$2,same_arg_counter=nil,same_arg_counter=$hash2([],{});return $send(this.$children(),"each_with_index",[],(($$2=function(arg,idx){var lhs,rhs,self=null==$$2.$$s?this:$$2.$$s,$writer=nil;return null==arg&&(arg=nil),null==idx&&(idx=nil),$truthy(self["$multiple_underscore?"](arg))&&($truthy(same_arg_counter["$[]"](arg))||($writer=[arg,0],$send(same_arg_counter,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]),$writer=[arg,(lhs=same_arg_counter["$[]"](arg),rhs=1,"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs))],$send(same_arg_counter,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)],$truthy($rb_gt(same_arg_counter["$[]"](arg),1))&&(arg=self.$s(arg.$type(),arg.$children()["$[]"](0)+"_$"+same_arg_counter["$[]"](arg)))),$truthy(idx["$!="](0))&&self.$push(", "),self.$push(self.$process(arg))}).$$s=this,$$2.$$arity=2,$$2))},$ArgsNode_compile$1.$$arity=0),Opal.def($ArgsNode_multiple_underscore$ques$3,"$multiple_underscore?",$ArgsNode_multiple_underscore$ques$3=function(arg){var $ret_or_2,$ret_or_3=nil,$ret_or_4=nil;return $truthy($ret_or_2=$truthy($ret_or_3=$truthy($ret_or_4=arg.$type()["$=="]("arg"))?arg.$children().$count()["$=="](1):$ret_or_4)?arg.$children().$first().$to_s()["$start_with?"]("_"):$ret_or_3)?$rb_gt(this.$children().$count(arg),1):$ret_or_2},$ArgsNode_multiple_underscore$ques$3.$$arity=1),nil&&"multiple_underscore?"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/node_with_args"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$truthy=Opal.truthy;return Opal.add_stubs(["$require","$attr_reader","$attr_accessor","$[]","$meta","$s","$original_args","$push","$process","$arity_check_node","$uses_block?","$scope","$identity","$block_name","$add_temp","$line","$to_code","$new"]),self.$require("opal/nodes/scope"),self.$require("opal/nodes/args/parameters"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$NodeWithArgs_parameters_code$5,$NodeWithArgs_compile_block_arg$4){var $NodeWithArgs_initialize$1,$NodeWithArgs_parameters_code$5=$klass($base,$NodeWithArgs_parameters_code$5,"NodeWithArgs"),$nesting=[$NodeWithArgs_parameters_code$5].concat($NodeWithArgs_compile_block_arg$4);return $NodeWithArgs_parameters_code$5.$$prototype.sexp=nil,$NodeWithArgs_parameters_code$5.$attr_reader("used_kwargs"),$NodeWithArgs_parameters_code$5.$attr_accessor("arity"),$NodeWithArgs_parameters_code$5.$attr_reader("original_args"),Opal.def($NodeWithArgs_parameters_code$5,"$initialize",$NodeWithArgs_initialize$1=function($a){var $zuper_ii,$iter=$NodeWithArgs_initialize$1.$$p,$zuper=nil,$zuper_i=nil;for($iter&&($NodeWithArgs_initialize$1.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return Opal.slice.call(arguments,0,arguments.length),$send2(this,$find_super(this,"initialize",$NodeWithArgs_initialize$1,!1,!0),"initialize",$zuper,$iter),this.original_args=this.sexp.$meta()["$[]"]("original_args"),this.used_kwargs=[],this.arity=0},$NodeWithArgs_initialize$1.$$arity=-1),Opal.def($NodeWithArgs_parameters_code$5,"$arity_check_node",$NodeWithArgs_compile_block_arg$4=function(){return this.$s("arity_check",this.$original_args())},$NodeWithArgs_compile_block_arg$4.$$arity=0),Opal.def($NodeWithArgs_parameters_code$5,"$compile_arity_check",$NodeWithArgs_compile_block_arg$4=function(){return this.$push(this.$process(this.$arity_check_node()))},$NodeWithArgs_compile_block_arg$4.$$arity=0),Opal.def($NodeWithArgs_parameters_code$5,"$compile_block_arg",$NodeWithArgs_compile_block_arg$4=function(){var scope_name,yielder,self=this,$ret_or_1=nil;return $truthy(self.$scope()["$uses_block?"]())?(scope_name=self.$scope().$identity(),yielder=$truthy($ret_or_1=self.$scope().$block_name())?$ret_or_1:"$yield",self.$add_temp("$iter = "+scope_name+".$$p"),self.$add_temp(yielder+" = $iter || nil"),self.$line("if ($iter) "+scope_name+".$$p = null;")):nil},$NodeWithArgs_compile_block_arg$4.$$arity=0),Opal.def($NodeWithArgs_parameters_code$5,"$parameters_code",$NodeWithArgs_parameters_code$5=function(){return $$$($$($nesting,"Args"),"Parameters").$new(this.$original_args()).$to_code()},$NodeWithArgs_parameters_code$5.$$arity=0),nil&&"parameters_code"}($nesting[0],$$($nesting,"ScopeNode"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/iter"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send;return Opal.add_stubs(["$require","$handle","$children","$lambda_definition?","$scope","$is_lambda!","$in_scope","$identify!","$add_temp","$process","$inline_args","$compile_arity_check","$stmt","$returned_body","$to_vars","$line","$catch_return","$unshift","$push","$contains_break?","$arity","$arity_check?","$compiler","$parameters_code","$has_top_level_mlhs_arg?","$has_trailing_comma_in_args?","$block_arg","$block_name=","$-","$each","$args","$first","$==","$<<","$updated","$body","$returns","$s","$any?","$original_args","$type","$loc","$expression","$source","$match","$new","$found_break?"]),self.$require("opal/nodes/node_with_args"),self.$require("opal/rewriters/break_finder"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$IterNode_contains_break$ques$11,$IterNode_arity_check_node$10){var $IterNode_contains_break$ques$11=$klass($base,$IterNode_contains_break$ques$11,"IterNode"),$nesting=[$IterNode_contains_break$ques$11].concat($IterNode_arity_check_node$10);return $IterNode_contains_break$ques$11.$$prototype.sexp=nil,$IterNode_contains_break$ques$11.$handle("iter"),$IterNode_contains_break$ques$11.$children("inline_args","body"),Opal.def($IterNode_contains_break$ques$11,"$compile",$IterNode_arity_check_node$10=function(){var $$2,body_code,inline_params=nil,to_vars=nil,identity=nil;return $truthy(this.$scope()["$lambda_definition?"]())&&this["$is_lambda!"](),to_vars=identity=inline_params=nil,$send(this,"in_scope",[],(($$2=function(){var self=null==$$2.$$s?this:$$2.$$s;return identity=self.$scope()["$identify!"](),self.$add_temp("self = "+identity+".$$s == null ? this : "+identity+".$$s"),inline_params=self.$process(self.$inline_args()),self.$compile_arity_check(),body_code=self.$stmt(self.$returned_body()),to_vars=self.$scope().$to_vars(),self.$line(body_code),$truthy(self.$scope().$catch_return())?(self.$unshift("try {\n"),self.$line("} catch ($returner) { if ($returner === Opal.returner) { return $returner.$v }"),self.$push(" throw $returner; }")):nil}).$$s=this,$$2.$$arity=0,$$2)),this.$unshift(to_vars),this.$unshift("("+identity+" = function(",inline_params,"){"),this.$push("}, "+identity+".$$s = self,"),$truthy(this["$contains_break?"]())&&this.$push(" "+identity+".$$brk = $brk,"),this.$push(" "+identity+".$$arity = "+this.$arity()+","),$truthy(this.$compiler()["$arity_check?"]())&&this.$push(" "+identity+".$$parameters = "+this.$parameters_code()+","),$truthy(this["$has_top_level_mlhs_arg?"]())&&this.$push(" "+identity+".$$has_top_level_mlhs_arg = true,"),$truthy(this["$has_trailing_comma_in_args?"]())&&this.$push(" "+identity+".$$has_trailing_comma_in_args = true,"),this.$push(" "+identity+")")},$IterNode_arity_check_node$10.$$arity=0),Opal.def($IterNode_contains_break$ques$11,"$compile_block_arg",$IterNode_arity_check_node$10=function(){var scope_name,rhs,lhs=nil;return $truthy(this.$block_arg())?(lhs=[this.$block_arg()],$send(this.$scope(),"block_name=",Opal.to_a(lhs)),rhs=1,"number"==typeof(lhs=lhs.length)&&"number"==typeof rhs||lhs["$-"](rhs),this.$scope().$add_temp(this.$block_arg()),scope_name=this.$scope()["$identify!"](),this.$line(this.$block_arg()+" = "+scope_name+".$$p || nil;"),this.$line("if ("+this.$block_arg()+") "+scope_name+".$$p = null;")):nil},$IterNode_arity_check_node$10.$$arity=0),Opal.def($IterNode_contains_break$ques$11,"$extract_underscore_args",$IterNode_arity_check_node$10=function(){var $$5,valid_args=nil,caught_blank_argument=nil,valid_args=[],caught_blank_argument=!1;return $send(this.$args().$children(),"each",[],(($$5=function(arg){null==$$5.$$s||$$5.$$s;return null==arg&&(arg=nil),arg.$children().$first()["$=="]("_")?$truthy(caught_blank_argument)?nil:(caught_blank_argument=!0,valid_args["$<<"](arg)):valid_args["$<<"](arg)}).$$s=this,$$5.$$arity=1,$$5)),this.sexp=this.sexp.$updated(nil,[this.$args().$updated(nil,valid_args),this.$body()])},$IterNode_arity_check_node$10.$$arity=0),Opal.def($IterNode_contains_break$ques$11,"$returned_body",$IterNode_arity_check_node$10=function(){var self=this,$ret_or_1=nil;return self.$compiler().$returns($truthy($ret_or_1=self.$body())?$ret_or_1:self.$s("nil"))},$IterNode_arity_check_node$10.$$arity=0),Opal.def($IterNode_contains_break$ques$11,"$has_top_level_mlhs_arg?",$IterNode_arity_check_node$10=function(){var $$8;return $send(this.$original_args().$children(),"any?",[],(($$8=function(arg){null==$$8.$$s||$$8.$$s;return null==arg&&(arg=nil),arg.$type()["$=="]("mlhs")}).$$s=this,$$8.$$arity=1,$$8))},$IterNode_arity_check_node$10.$$arity=0),Opal.def($IterNode_contains_break$ques$11,"$has_trailing_comma_in_args?",$IterNode_arity_check_node$10=function(){var self=this,$ret_or_2=nil;return $truthy($truthy($ret_or_2=self.$original_args().$loc())?self.$original_args().$loc().$expression():$ret_or_2)?self.$original_args().$loc().$expression().$source().$match(/,\s*\|/):nil},$IterNode_arity_check_node$10.$$arity=0),Opal.def($IterNode_contains_break$ques$11,"$arity_check_node",$IterNode_arity_check_node$10=function(){return this.$s("iter_arity_check",this.$original_args())},$IterNode_arity_check_node$10.$$arity=0),Opal.def($IterNode_contains_break$ques$11,"$contains_break?",$IterNode_contains_break$ques$11=function(){var finder=nil;return(finder=$$$($$$($$($nesting,"Opal"),"Rewriters"),"BreakFinder").$new()).$process(this.sexp),finder["$found_break?"]()},$IterNode_contains_break$ques$11.$$arity=0),nil&&"contains_break?"}($nesting[0],$$($nesting,"NodeWithArgs"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/def"]=function(Opal){function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send=Opal.send,$truthy=Opal.truthy;return Opal.add_stubs(["$require","$handle","$children","$in_scope","$mid","$mid=","$scope","$-","$==","$type","$defs=","$identify!","$identity","$block_name=","$process","$inline_args","$stmt","$returns","$compiler","$stmts","$compile_block_arg","$add_temp","$compile_arity_check","$uses_zuper","$prepare_super","$unshift","$current_indent","$to_vars","$line","$catch_return","$push","$valid_name?","$arity","$arity_check?","$parameters_code","$parse_comments?","$comments_code","$enable_source_location?","$source_location","$wrap_with_definition","$wrap","$expr?","$+","$join","$map","$comments","$inspect","$text","$add_local"]),self.$require("opal/nodes/node_with_args"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$DefNode_prepare_super$6,$DefNode_comments_code$4){$DefNode_prepare_super$6=$klass($base,$DefNode_prepare_super$6,"DefNode"),[$DefNode_prepare_super$6].concat($DefNode_comments_code$4);return $DefNode_prepare_super$6.$handle("def"),$DefNode_prepare_super$6.$children("mid","inline_args","stmts"),Opal.def($DefNode_prepare_super$6,"$compile",$DefNode_comments_code$4=function(){var $$2,function_name,self=this,inline_params=nil,scope_name=nil,inline_params=nil,scope_name=nil;return $send(self,"in_scope",[],(($$2=function(){var stmt_code,self=null==$$2.$$s?this:$$2.$$s,$writer=nil;return null==self.sexp&&(self.sexp=nil),$writer=[self.$mid()],$send(self.$scope(),"mid=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)],self.sexp.$type()["$=="]("defs")&&($writer=[!0],$send(self.$scope(),"defs=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]),self.$scope()["$identify!"](),scope_name=self.$scope().$identity(),$writer=["$yield"],$send(self.$scope(),"block_name=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)],inline_params=self.$process(self.$inline_args()),stmt_code=self.$stmt(self.$compiler().$returns(self.$stmts())),self.$compile_block_arg(),self.$add_temp("self = this"),self.$compile_arity_check(),$truthy(self.$scope().$uses_zuper())&&self.$prepare_super(),self.$unshift("\n"+self.$current_indent(),self.$scope().$to_vars()),self.$line(stmt_code),$truthy(self.$scope().$catch_return())?(self.$unshift("try {\n"),self.$line("} catch ($returner) { if ($returner === Opal.returner) { return $returner.$v }"),self.$push(" throw $returner; }")):nil}).$$s=self,$$2.$$arity=0,$$2)),function_name=$truthy(self["$valid_name?"](self.$mid()))?" $$"+self.$mid():"",self.$unshift(") {"),self.$unshift(inline_params),self.$unshift("function"+function_name+"("),$truthy(scope_name)&&self.$unshift(scope_name+" = "),self.$line("}"),self.$push(", "+scope_name+".$$arity = "+self.$arity()),$truthy(self.$compiler()["$arity_check?"]())&&self.$push(", "+scope_name+".$$parameters = "+self.$parameters_code()),$truthy(self.$compiler()["$parse_comments?"]())&&self.$push(", "+scope_name+".$$comments = "+self.$comments_code()),$truthy(self.$compiler()["$enable_source_location?"]())&&self.$push(", "+scope_name+".$$source_location = "+self.$source_location()),self.$wrap_with_definition()},$DefNode_comments_code$4.$$arity=0),Opal.def($DefNode_prepare_super$6,"$wrap_with_definition",$DefNode_comments_code$4=function(){return this.$wrap("Opal.def(self, '$"+this.$mid()+"', ",")"),$truthy(this["$expr?"]())?this.$wrap("(",", nil) && '"+this.$mid()+"'"):this.$unshift("\n"+this.$current_indent())},$DefNode_comments_code$4.$$arity=0),Opal.def($DefNode_prepare_super$6,"$comments_code",$DefNode_comments_code$4=function(){var $$5;return $rb_plus($rb_plus("[",$send(this.$comments(),"map",[],(($$5=function(comment){null==$$5.$$s||$$5.$$s;return null==comment&&(comment=nil),comment.$text().$inspect()}).$$s=this,$$5.$$arity=1,$$5)).$join(", ")),"]")},$DefNode_comments_code$4.$$arity=0),Opal.def($DefNode_prepare_super$6,"$prepare_super",$DefNode_prepare_super$6=function(){return this.$add_local("$zuper"),this.$add_local("$zuper_i"),this.$add_local("$zuper_ii"),this.$line("// Prepare super implicit arguments"),this.$line("for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {"),this.$line("  $zuper[$zuper_i] = arguments[$zuper_i];"),this.$line("}")},$DefNode_prepare_super$6.$$arity=0),nil&&"prepare_super"}($nesting[0],$$($nesting,"NodeWithArgs"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/defs"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy;return Opal.add_stubs(["$require","$handle","$children","$unshift","$expr","$recvr","$mid","$push","$expr?","$wrap"]),self.$require("opal/nodes/def"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$DefsNode_wrap_with_definition$1,$parent_nesting){$DefsNode_wrap_with_definition$1=$klass($base,$DefsNode_wrap_with_definition$1,"DefsNode"),[$DefsNode_wrap_with_definition$1].concat($parent_nesting);return $DefsNode_wrap_with_definition$1.$handle("defs"),$DefsNode_wrap_with_definition$1.$children("recvr","mid","inline_args","stmts"),Opal.def($DefsNode_wrap_with_definition$1,"$wrap_with_definition",$DefsNode_wrap_with_definition$1=function(){return this.$unshift("Opal.defs(",this.$expr(this.$recvr()),", '$"+this.$mid()+"', "),this.$push(")"),$truthy(this["$expr?"]())?this.$wrap("(",", nil) && '"+this.$mid()+"'"):nil},$DefsNode_wrap_with_definition$1.$$arity=0),nil&&"wrap_with_definition"}($nesting[0],$$($nesting,"DefNode"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/if"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send;return Opal.add_stubs(["$require","$handle","$children","$truthy","$falsy","$push","$js_truthy","$test","$indent","$line","$stmt","$==","$type","$needs_wrapper?","$wrap","$returns","$compiler","$true_body","$s","$false_body","$expr?","$recv?","$helper","$new_temp","$top_scope","$excl","$from","$to"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$IfNode_needs_wrapper$ques$6,$IfNode_falsy$5){[$IfNode_needs_wrapper$ques$6=$klass($base,$IfNode_needs_wrapper$ques$6,"IfNode")].concat($IfNode_falsy$5),$IfNode_needs_wrapper$ques$6.$handle("if"),$IfNode_needs_wrapper$ques$6.$children("test","true_body","false_body"),Opal.def($IfNode_needs_wrapper$ques$6,"$compile",$IfNode_falsy$5=function(){var $$2,$$3,falsy=nil,truthy=this.$truthy(),falsy=this.$falsy();return this.$push("if (",this.$js_truthy(this.$test()),") {"),$truthy(truthy)&&$send(this,"indent",[],(($$2=function(){var self=null==$$2.$$s?this:$$2.$$s;return self.$line(self.$stmt(truthy))}).$$s=this,$$2.$$arity=0,$$2)),$truthy(falsy)?falsy.$type()["$=="]("if")?this.$line("} else ",this.$stmt(falsy)):(this.$line("} else {"),$send(this,"indent",[],(($$3=function(){var self=null==$$3.$$s?this:$$3.$$s;return self.$line(self.$stmt(falsy))}).$$s=this,$$3.$$arity=0,$$3)),this.$line("}")):this.$push("}"),$truthy(this["$needs_wrapper?"]())?this.$wrap("(function() {","; return nil; })()"):nil},$IfNode_falsy$5.$$arity=0),Opal.def($IfNode_needs_wrapper$ques$6,"$truthy",$IfNode_falsy$5=function(){var self=this,$ret_or_1=nil;return $truthy(self["$needs_wrapper?"]())?self.$compiler().$returns($truthy($ret_or_1=self.$true_body())?$ret_or_1:self.$s("nil")):self.$true_body()},$IfNode_falsy$5.$$arity=0),Opal.def($IfNode_needs_wrapper$ques$6,"$falsy",$IfNode_falsy$5=function(){var self=this,$ret_or_2=nil;return $truthy(self["$needs_wrapper?"]())?self.$compiler().$returns($truthy($ret_or_2=self.$false_body())?$ret_or_2:self.$s("nil")):self.$false_body()},$IfNode_falsy$5.$$arity=0),Opal.def($IfNode_needs_wrapper$ques$6,"$needs_wrapper?",$IfNode_needs_wrapper$ques$6=function(){var $ret_or_3;return $truthy($ret_or_3=this["$expr?"]())?$ret_or_3:this["$recv?"]()},$IfNode_needs_wrapper$ques$6.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$IFlipFlop_compile$8,$IFlipFlop_excl$7){[$IFlipFlop_compile$8=$klass($base,$IFlipFlop_compile$8,"IFlipFlop")].concat($IFlipFlop_excl$7),$IFlipFlop_compile$8.$handle("iflipflop"),$IFlipFlop_compile$8.$children("from","to"),Opal.def($IFlipFlop_compile$8,"$excl",$IFlipFlop_excl$7=function(){return""},$IFlipFlop_excl$7.$$arity=0),Opal.def($IFlipFlop_compile$8,"$compile",$IFlipFlop_compile$8=function(){var fun_name,ff;return this.$helper("truthy"),ff=(fun_name=this.$top_scope().$new_temp())+".$$ff",this.$push("(typeof "+fun_name+" === 'undefined' ? ("+fun_name+" = function(from, to){"),this.$push("  if (typeof "+ff+" === 'undefined') "+ff+" = false;"),this.$push("  var retval = "+ff+";"),this.$push("  if (!"+ff+") {"),this.$push("    "+ff+" = retval = $truthy(from());"),this.$push("  }"),this.$push("  "+this.$excl()+"if ("+ff+") {"),this.$push("    if ($truthy(to())) "+ff+" = false;"),this.$push("  }"),this.$push("  return retval;"),this.$push("}) : "+fun_name+")("),this.$push("  function() { ",this.$stmt(this.$compiler().$returns(this.$from()))," },"),this.$push("  function() { ",this.$stmt(this.$compiler().$returns(this.$to()))," }"),this.$push(")")},$IFlipFlop_compile$8.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$EFlipFlop_excl$9,$parent_nesting){$EFlipFlop_excl$9=$klass($base,$EFlipFlop_excl$9,"EFlipFlop"),[$EFlipFlop_excl$9].concat($parent_nesting);return $EFlipFlop_excl$9.$handle("eflipflop"),Opal.def($EFlipFlop_excl$9,"$excl",$EFlipFlop_excl$9=function(){return"else "},$EFlipFlop_excl$9.$$arity=0),nil&&"excl"}($nesting[0],$$($nesting,"IFlipFlop"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/logic"]=function(Opal){function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send;return Opal.add_stubs(["$require","$handle","$in_while?","$push","$iter?","$scope","$expr_or_nil","$value","$error","$size","$children","$===","$s","$first","$compile_while","$compile_iter","$[]","$while_loop","$stmt?","$line","$break_val","$nil?","$expr","$[]=","$-","$helper","$identity","$==","$empty_splat?","$recv","$>","$!","$lambda?","$find_parent_def","$expr?","$def?","$return_in_iter?","$return_expr_in_def?","$scope_to_catch_return","$catch_return=","$return_val","$to_s"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$NextNode_value$2,$NextNode_compile$1){[$NextNode_value$2=$klass($base,$NextNode_value$2,"NextNode")].concat($NextNode_compile$1),$NextNode_value$2.$handle("next"),Opal.def($NextNode_value$2,"$compile",$NextNode_compile$1=function(){return $truthy(this["$in_while?"]())?this.$push("continue;"):$truthy(this.$scope()["$iter?"]())?this.$push("return ",this.$expr_or_nil(this.$value()),";"):this.$error("Invalid next")},$NextNode_compile$1.$$arity=0),Opal.def($NextNode_value$2,"$value",$NextNode_value$2=function(){var self=this,$case=nil;return $case=self.$children().$size(),0["$==="]($case)?self.$s("nil"):1["$==="]($case)?self.$children().$first():$send(self,"s",["array"].concat(Opal.to_a(self.$children())))},$NextNode_value$2.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$BreakNode_break_val$6,$BreakNode_compile_iter$5){[$BreakNode_break_val$6=$klass($base,$BreakNode_break_val$6,"BreakNode")].concat($BreakNode_compile_iter$5),$BreakNode_break_val$6.$handle("break"),$BreakNode_break_val$6.$children("value"),Opal.def($BreakNode_break_val$6,"$compile",$BreakNode_compile_iter$5=function(){return $truthy(this["$in_while?"]())?this.$compile_while():$truthy(this.$scope()["$iter?"]())?this.$compile_iter():this.$error("void value expression: cannot use break outside of iter/while")},$BreakNode_compile_iter$5.$$arity=0),Opal.def($BreakNode_break_val$6,"$compile_while",$BreakNode_compile_iter$5=function(){return $truthy(this.$while_loop()["$[]"]("closure"))?this.$push("return ",this.$expr_or_nil(this.$value())):this.$push("break;")},$BreakNode_compile_iter$5.$$arity=0),Opal.def($BreakNode_break_val$6,"$compile_iter",$BreakNode_compile_iter$5=function(){return $truthy(this["$stmt?"]())||this.$error("break must be used as a statement"),this.$line("Opal.brk(",this.$break_val(),", $brk)")},$BreakNode_compile_iter$5.$$arity=0),Opal.def($BreakNode_break_val$6,"$break_val",$BreakNode_break_val$6=function(){return $truthy(this.$value()["$nil?"]())?this.$expr(this.$s("nil")):this.$expr(this.$value())},$BreakNode_break_val$6.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$RedoNode_compile_iter$9,$RedoNode_compile_while$8){[$RedoNode_compile_iter$9=$klass($base,$RedoNode_compile_iter$9,"RedoNode")].concat($RedoNode_compile_while$8),$RedoNode_compile_iter$9.$handle("redo"),Opal.def($RedoNode_compile_iter$9,"$compile",$RedoNode_compile_while$8=function(){return $truthy(this["$in_while?"]())?this.$compile_while():$truthy(this.$scope()["$iter?"]())?this.$compile_iter():this.$push("REDO()")},$RedoNode_compile_while$8.$$arity=0),Opal.def($RedoNode_compile_iter$9,"$compile_while",$RedoNode_compile_while$8=function(){var $writer=["use_redo",!0];return $send(this.$while_loop(),"[]=",Opal.to_a($writer)),$rb_minus($writer.length,1),this.$push(this.$while_loop()["$[]"]("redo_var")+" = true; continue;")},$RedoNode_compile_while$8.$$arity=0),Opal.def($RedoNode_compile_iter$9,"$compile_iter",$RedoNode_compile_iter$9=function(){return this.$helper("slice"),this.$push("return "+this.$scope().$identity()+".apply(null, $slice.call(arguments))")},$RedoNode_compile_iter$9.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$SplatNode_compile$11,$SplatNode_empty_splat$ques$10){[$SplatNode_compile$11=$klass($base,$SplatNode_compile$11,"SplatNode")].concat($SplatNode_empty_splat$ques$10),$SplatNode_compile$11.$handle("splat"),$SplatNode_compile$11.$children("value"),Opal.def($SplatNode_compile$11,"$empty_splat?",$SplatNode_empty_splat$ques$10=function(){return this.$value()["$=="](this.$s("array"))},$SplatNode_empty_splat$ques$10.$$arity=0),Opal.def($SplatNode_compile$11,"$compile",$SplatNode_compile$11=function(){return $truthy(this["$empty_splat?"]())?this.$push("[]"):this.$push("Opal.to_a(",this.$recv(this.$value()),")")},$SplatNode_compile$11.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$ReturnNode_compile$16,$ReturnNode_scope_to_catch_return$15){[$ReturnNode_compile$16=$klass($base,$ReturnNode_compile$16,"ReturnNode")].concat($ReturnNode_scope_to_catch_return$15),$ReturnNode_compile$16.$handle("return"),$ReturnNode_compile$16.$children("value"),Opal.def($ReturnNode_compile$16,"$return_val",$ReturnNode_scope_to_catch_return$15=function(){var lhs,rhs;return $truthy(this.$value()["$nil?"]())?this.$expr(this.$s("nil")):$truthy((lhs=this.$children().$size(),rhs=1,"number"==typeof lhs&&"number"==typeof rhs?rhs<lhs:lhs["$>"](rhs)))?this.$expr($send(this,"s",["array"].concat(Opal.to_a(this.$children())))):this.$expr(this.$value())},$ReturnNode_scope_to_catch_return$15.$$arity=0),Opal.def($ReturnNode_compile$16,"$return_in_iter?",$ReturnNode_scope_to_catch_return$15=function(){var self=this,$ret_or_1=nil,$ret_or_2=nil,parent_def=nil;return $truthy($truthy($ret_or_1=$truthy($ret_or_2=self.$scope()["$iter?"]())?self.$scope()["$lambda?"]()["$!"]():$ret_or_2)?parent_def=self.$scope().$find_parent_def():$ret_or_1)?parent_def:nil},$ReturnNode_scope_to_catch_return$15.$$arity=0),Opal.def($ReturnNode_compile$16,"$return_expr_in_def?",$ReturnNode_scope_to_catch_return$15=function(){var self=this,$ret_or_3=nil,$ret_or_4=nil;return $truthy($truthy($ret_or_3=self["$expr?"]())?$truthy($ret_or_4=self.$scope()["$def?"]())?$ret_or_4:self.$scope()["$lambda?"]():$ret_or_3)?self.$scope():nil},$ReturnNode_scope_to_catch_return$15.$$arity=0),Opal.def($ReturnNode_compile$16,"$scope_to_catch_return",$ReturnNode_scope_to_catch_return$15=function(){var $ret_or_5;return $truthy($ret_or_5=this["$return_in_iter?"]())?$ret_or_5:this["$return_expr_in_def?"]()},$ReturnNode_scope_to_catch_return$15.$$arity=0),Opal.def($ReturnNode_compile$16,"$compile",$ReturnNode_compile$16=function(){var def_scope,$writer;return $truthy(def_scope=this.$scope_to_catch_return())?($writer=[!0],$send(def_scope,"catch_return=",Opal.to_a($writer)),$rb_minus($writer.length,1),this.$push("Opal.ret(",this.$return_val(),")")):$truthy(this["$stmt?"]())?this.$push("return ",this.$return_val()):this.$error("void value expression: cannot return as an expression")},$ReturnNode_compile$16.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$JSReturnNode_compile$17,$parent_nesting){[$JSReturnNode_compile$17=$klass($base,$JSReturnNode_compile$17,"JSReturnNode")].concat($parent_nesting),$JSReturnNode_compile$17.$handle("js_return"),$JSReturnNode_compile$17.$children("value"),Opal.def($JSReturnNode_compile$17,"$compile",$JSReturnNode_compile$17=function(){return this.$push("return "),this.$push(this.$expr(this.$value()))},$JSReturnNode_compile$17.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$JSTempNode_compile$18,$parent_nesting){[$JSTempNode_compile$18=$klass($base,$JSTempNode_compile$18,"JSTempNode")].concat($parent_nesting),$JSTempNode_compile$18.$handle("js_tmp"),$JSTempNode_compile$18.$children("value"),Opal.def($JSTempNode_compile$18,"$compile",$JSTempNode_compile$18=function(){return this.$push(this.$value().$to_s())},$JSTempNode_compile$18.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$BlockPassNode_compile$19,$parent_nesting){$BlockPassNode_compile$19=$klass($base,$BlockPassNode_compile$19,"BlockPassNode"),[$BlockPassNode_compile$19].concat($parent_nesting);return $BlockPassNode_compile$19.$handle("block_pass"),$BlockPassNode_compile$19.$children("value"),Opal.def($BlockPassNode_compile$19,"$compile",$BlockPassNode_compile$19=function(){return this.$push(this.$expr(this.$s("send",this.$value(),"to_proc",this.$s("arglist"))))},$BlockPassNode_compile$19.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/definitions"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send=Opal.send,$range=Opal.range,$truthy=Opal.truthy,$slice=Opal.slice;return Opal.add_stubs(["$require","$handle","$children","$each","$line","$expr","$type","$new_name","$===","$helper","$inspect","$[]","$to_s","$first","$old_name","$push","$error","$empty?","$stmt?","$compile_children","$simple_children?","$compile_inline_children","$>","$size","$wrap","$==","$returned_children","$+","$returns","$compiler","$s","$process","$freeze","$none?","$include?","$map","$each_with_index","$reject","$to_proc"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$UndefNode_compile$1,$parent_nesting){[$UndefNode_compile$1=$klass($base,$UndefNode_compile$1,"UndefNode")].concat($parent_nesting),$UndefNode_compile$1.$handle("undef"),$UndefNode_compile$1.$children("value"),Opal.def($UndefNode_compile$1,"$compile",$UndefNode_compile$1=function(){var $$2;return $send(this.$children(),"each",[],(($$2=function(child){var self=null==$$2.$$s?this:$$2.$$s;return null==child&&(child=nil),self.$line("Opal.udef(self, '$' + ",self.$expr(child),");")}).$$s=this,$$2.$$arity=1,$$2))},$UndefNode_compile$1.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$AliasNode_compile$3,$parent_nesting){[$AliasNode_compile$3=$klass($base,$AliasNode_compile$3,"AliasNode")].concat($parent_nesting),$AliasNode_compile$3.$handle("alias"),$AliasNode_compile$3.$children("new_name","old_name"),Opal.def($AliasNode_compile$3,"$compile",$AliasNode_compile$3=function(){var self=this,$case=nil,new_name_str=nil,old_name_str=nil;return $case=self.$new_name().$type(),"gvar"["$==="]($case)?(self.$helper("alias_gvar"),new_name_str=self.$new_name().$children().$first().$to_s()["$[]"]($range(1,-1,!1)).$inspect(),old_name_str=self.$old_name().$children().$first().$to_s()["$[]"]($range(1,-1,!1)).$inspect(),self.$push("$alias_gvar(",new_name_str,", ",old_name_str,")")):"dsym"["$==="]($case)||"sym"["$==="]($case)?(self.$helper("alias"),self.$push("$alias(self, ",self.$expr(self.$new_name()),", ",self.$expr(self.$old_name()),")")):self.$error("Opal doesn't know yet how to alias with "+self.$new_name().$type())},$AliasNode_compile$3.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$BeginNode_compile_inline_children$10,$BeginNode_simple_children$ques$8){var $nesting=[$BeginNode_compile_inline_children$10=$klass($base,$BeginNode_compile_inline_children$10,"BeginNode")].concat($BeginNode_simple_children$ques$8);$BeginNode_compile_inline_children$10.$$prototype.level=$BeginNode_compile_inline_children$10.$$prototype.returned_children=nil,$BeginNode_compile_inline_children$10.$handle("begin"),Opal.def($BeginNode_compile_inline_children$10,"$compile",$BeginNode_simple_children$ques$8=function(){var lhs,rhs;return $truthy(this.$children()["$empty?"]())?this.$push("nil"):$truthy(this["$stmt?"]())?this.$compile_children(this.$children(),this.level):$truthy(this["$simple_children?"]())?(this.$compile_inline_children(this.$children(),this.level),$truthy((lhs=this.$children().$size(),rhs=1,"number"==typeof lhs&&"number"==typeof rhs?rhs<lhs:lhs["$>"](rhs)))?this.$wrap("(",")"):nil):this.$children().$size()["$=="](1)?this.$compile_inline_children(this.$returned_children(),this.level):(this.$compile_children(this.$returned_children(),this.level),this.$wrap("(function() {","})()"))},$BeginNode_simple_children$ques$8.$$arity=0),Opal.def($BeginNode_compile_inline_children$10,"$returned_children",$BeginNode_simple_children$ques$8=function(){var $a,self=this,$b=nil,lhs=nil,rhs=nil;return self.returned_children=$truthy($b=self.returned_children)?$b:($a=[].concat(Opal.to_a(self.$children())),$b=($b=$a.length-1)<0?0:$b,lhs=$slice.call($a,0,$b),rhs=null==$a[$b]?nil:$a[$b],$truthy(rhs)?(lhs=lhs,rhs=[self.$compiler().$returns(rhs)],"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)):[self.$s("nil")])},$BeginNode_simple_children$ques$8.$$arity=0),Opal.def($BeginNode_compile_inline_children$10,"$compile_children",$BeginNode_simple_children$ques$8=function(children,level){var $$7;return $send(children,"each",[],(($$7=function(child){var self=null==$$7.$$s?this:$$7.$$s;return null==child&&(child=nil),self.$line(self.$process(child,level),";")}).$$s=this,$$7.$$arity=1,$$7))},$BeginNode_simple_children$ques$8.$$arity=2),Opal.const_set($nesting[0],"COMPLEX_CHILDREN",["while","while_post","until","until_post","js_return"].$freeze()),Opal.def($BeginNode_compile_inline_children$10,"$simple_children?",$BeginNode_simple_children$ques$8=function(){var $$9;return $send(this.$children(),"none?",[],(($$9=function(child){null==$$9.$$s||$$9.$$s;return null==child&&(child=nil),$$($nesting,"COMPLEX_CHILDREN")["$include?"](child.$type())}).$$s=this,$$9.$$arity=1,$$9))},$BeginNode_simple_children$ques$8.$$arity=0),Opal.def($BeginNode_compile_inline_children$10,"$compile_inline_children",$BeginNode_compile_inline_children$10=function(children,level){var $$11,$$12,processed_children=$send(children,"map",[],(($$11=function(child){var self=null==$$11.$$s?this:$$11.$$s;return null==child&&(child=nil),self.$process(child,level)}).$$s=this,$$11.$$arity=1,$$11));return $send($send(processed_children,"reject",[],"empty?".$to_proc()),"each_with_index",[],(($$12=function(child,idx){var self=null==$$12.$$s?this:$$12.$$s;return null==child&&(child=nil),null==idx&&(idx=nil),idx["$=="](0)||self.$push(", "),self.$push(child)}).$$s=this,$$12.$$arity=2,$$12))},$BeginNode_compile_inline_children$10.$$arity=2)}($nesting[0],$$($nesting,"ScopeNode"),$nesting),function($base,self,$parent_nesting){self=$klass($base,self,"KwBeginNode"),[self].concat($parent_nesting);return self.$handle("kwbegin")}($nesting[0],$$($nesting,"BeginNode"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/yield"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send;return Opal.add_stubs(["$require","$find_yielding_scope","$uses_block!","$block_name","$block_name=","$-","$yields_single_arg?","$children","$push","$expr","$first","$wrap","$s","$uses_splat?","$scope","$def?","$parent","$!","$==","$size","$any?","$type","$handle","$compile_call"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$BaseYieldNode_uses_splat$ques$4,$BaseYieldNode_yields_single_arg$ques$3){[$BaseYieldNode_uses_splat$ques$4=$klass($base,$BaseYieldNode_uses_splat$ques$4,"BaseYieldNode")].concat($BaseYieldNode_yields_single_arg$ques$3),Opal.def($BaseYieldNode_uses_splat$ques$4,"$compile_call",$BaseYieldNode_yields_single_arg$ques$3=function(){var block_name,rhs,yielding_scope=nil,lhs=nil;return(yielding_scope=this.$find_yielding_scope())["$uses_block!"](),$truthy(yielding_scope.$block_name())||(lhs=["$yield"],$send(yielding_scope,"block_name=",Opal.to_a(lhs)),rhs=1,"number"==typeof(lhs=lhs.length)&&"number"==typeof rhs||lhs["$-"](rhs)),block_name=yielding_scope.$block_name(),$truthy(this["$yields_single_arg?"](this.$children()))?(this.$push(this.$expr(this.$children().$first())),this.$wrap("Opal.yield1("+block_name+", ",")")):(this.$push(this.$expr($send(this,"s",["arglist"].concat(Opal.to_a(this.$children()))))),$truthy(this["$uses_splat?"](this.$children()))?this.$wrap("Opal.yieldX("+block_name+", ",")"):this.$wrap("Opal.yieldX("+block_name+", [","])"))},$BaseYieldNode_yields_single_arg$ques$3.$$arity=0),Opal.def($BaseYieldNode_uses_splat$ques$4,"$find_yielding_scope",$BaseYieldNode_yields_single_arg$ques$3=function(){for(var working=nil,$ret_or_2=nil,working=this.$scope();$truthy(working)&&!$truthy($truthy($ret_or_2=working.$block_name())?$ret_or_2:working["$def?"]());)working=working.$parent();return working},$BaseYieldNode_yields_single_arg$ques$3.$$arity=0),Opal.def($BaseYieldNode_uses_splat$ques$4,"$yields_single_arg?",$BaseYieldNode_yields_single_arg$ques$3=function(children){var $ret_or_3;return $truthy($ret_or_3=this["$uses_splat?"](children)["$!"]())?children.$size()["$=="](1):$ret_or_3},$BaseYieldNode_yields_single_arg$ques$3.$$arity=1),Opal.def($BaseYieldNode_uses_splat$ques$4,"$uses_splat?",$BaseYieldNode_uses_splat$ques$4=function(children){var $$5;return $send(children,"any?",[],(($$5=function(child){null==$$5.$$s||$$5.$$s;return null==child&&(child=nil),child.$type()["$=="]("splat")}).$$s=this,$$5.$$arity=1,$$5))},$BaseYieldNode_uses_splat$ques$4.$$arity=1)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$YieldNode_compile$6,$parent_nesting){[$YieldNode_compile$6=$klass($base,$YieldNode_compile$6,"YieldNode")].concat($parent_nesting),$YieldNode_compile$6.$handle("yield"),Opal.def($YieldNode_compile$6,"$compile",$YieldNode_compile$6=function(){return this.$compile_call()},$YieldNode_compile$6.$$arity=0)}($nesting[0],$$($nesting,"BaseYieldNode"),$nesting),function($base,$ReturnableYieldNode_compile$7,$parent_nesting){$ReturnableYieldNode_compile$7=$klass($base,$ReturnableYieldNode_compile$7,"ReturnableYieldNode"),[$ReturnableYieldNode_compile$7].concat($parent_nesting);return $ReturnableYieldNode_compile$7.$handle("returnable_yield"),Opal.def($ReturnableYieldNode_compile$7,"$compile",$ReturnableYieldNode_compile$7=function(){return this.$compile_call(),this.$wrap("return ",";")},$ReturnableYieldNode_compile$7.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"BaseYieldNode"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/rescue"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send=Opal.send,$truthy=Opal.truthy,$range=Opal.range;return Opal.add_stubs(["$require","$handle","$children","$push","$in_ensure","$line","$stmt","$body_sexp","$indent","$has_rescue_else?","$unshift","$rescue_else_code","$process","$compiler","$ensr_sexp","$wrap_in_closure?","$wrap","$returns","$begn","$ensr","$s","$recv?","$expr?","$rescue_else_sexp","$scope","$stmt?","$detect","$[]","$!=","$type","$rescue_else_sexp=","$-","$handle_rescue_else_manually?","$in_rescue","$body_code","$each_with_index","$==","$retry_id","$nil?","$body","$!","$in_ensure?","$gen_retry_id","$attr_reader","$expr","$klasses","$lvar","$updated","$in_resbody","$rescue_body","$klasses_sexp","$in_resbody?","$error","$current_rescue"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$EnsureNode_rescue_else_code$9,$EnsureNode_wrap_in_closure$ques$8){[$EnsureNode_rescue_else_code$9=$klass($base,$EnsureNode_rescue_else_code$9,"EnsureNode")].concat($EnsureNode_wrap_in_closure$ques$8),$EnsureNode_rescue_else_code$9.$handle("ensure"),$EnsureNode_rescue_else_code$9.$children("begn","ensr"),Opal.def($EnsureNode_rescue_else_code$9,"$compile",$EnsureNode_wrap_in_closure$ques$8=function(){var $$2,$$3;return this.$push("try {"),$send(this,"in_ensure",[],(($$2=function(){var self=null==$$2.$$s?this:$$2.$$s;return self.$line(self.$stmt(self.$body_sexp()))}).$$s=this,$$2.$$arity=0,$$2)),this.$line("} finally {"),$send(this,"indent",[],(($$3=function(){var $$4,self=null==$$3.$$s?this:$$3.$$s;return null==self.level&&(self.level=nil),$truthy(self["$has_rescue_else?"]())?(self.$unshift("var $no_errors = true; "),self.$line("var $rescue_else_result;"),self.$line("if ($no_errors) { "),$send(self,"indent",[],(($$4=function(){var $$5,self=null==$$4.$$s?this:$$4.$$s;return self.$line("$rescue_else_result = (function() {"),$send(self,"indent",[],(($$5=function(){var self=null==$$5.$$s?this:$$5.$$s;return self.$line(self.$stmt(self.$rescue_else_code()))}).$$s=self,$$5.$$arity=0,$$5)),self.$line("})();")}).$$s=self,$$4.$$arity=0,$$4)),self.$line("}"),self.$line(self.$compiler().$process(self.$ensr_sexp(),self.level)),self.$line("if ($no_errors) { return $rescue_else_result; }")):self.$line(self.$compiler().$process(self.$ensr_sexp(),self.level))}).$$s=this,$$3.$$arity=0,$$3)),this.$line("}"),$truthy(this["$wrap_in_closure?"]())?this.$wrap("(function() { ","; })()"):nil},$EnsureNode_wrap_in_closure$ques$8.$$arity=0),Opal.def($EnsureNode_rescue_else_code$9,"$body_sexp",$EnsureNode_wrap_in_closure$ques$8=function(){return $truthy(this["$wrap_in_closure?"]())?this.$compiler().$returns(this.$begn()):this.$begn()},$EnsureNode_wrap_in_closure$ques$8.$$arity=0),Opal.def($EnsureNode_rescue_else_code$9,"$ensr_sexp",$EnsureNode_wrap_in_closure$ques$8=function(){var $ret_or_1;return $truthy($ret_or_1=this.$ensr())?$ret_or_1:this.$s("nil")},$EnsureNode_wrap_in_closure$ques$8.$$arity=0),Opal.def($EnsureNode_rescue_else_code$9,"$wrap_in_closure?",$EnsureNode_wrap_in_closure$ques$8=function(){var $ret_or_2,self=this,$ret_or_3=nil;return $truthy($ret_or_2=$truthy($ret_or_3=self["$recv?"]())?$ret_or_3:self["$expr?"]())?$ret_or_2:self["$has_rescue_else?"]()},$EnsureNode_wrap_in_closure$ques$8.$$arity=0),Opal.def($EnsureNode_rescue_else_code$9,"$rescue_else_code",$EnsureNode_rescue_else_code$9=function(){var rescue_else_code=nil,rescue_else_code=this.$scope().$rescue_else_sexp();return $truthy(this["$stmt?"]())||(rescue_else_code=this.$compiler().$returns(rescue_else_code)),rescue_else_code},$EnsureNode_rescue_else_code$9.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,self,$RescueNode_gen_retry_id$21){[self=$klass($base,self,"RescueNode")].concat($RescueNode_gen_retry_id$21),self.$$prototype.retry_id=nil,self.$handle("rescue"),self.$children("body"),Opal.def(self,"$compile",$RescueNode_gen_retry_id$21=function(){var $$11,$$12,rhs,self=this,lhs=nil,$ret_or_6=nil,lhs=[$send(self.$children()["$[]"]($range(1,-1,!1)),"detect",[],(($$11=function(sexp){var $ret_or_4;null==$$11.$$s||$$11.$$s;return null==sexp&&(sexp=nil),$truthy($ret_or_4=sexp)?sexp.$type()["$!="]("resbody"):$ret_or_4}).$$s=self,$$11.$$arity=1,$$11))];return $send(self.$scope(),"rescue_else_sexp=",Opal.to_a(lhs)),rhs=1,"number"==typeof(lhs=lhs.length)&&"number"==typeof rhs||lhs["$-"](rhs),$truthy(self["$handle_rescue_else_manually?"]())&&self.$line("var $no_errors = true;"),$send(self,"in_rescue",[self],(($$12=function(){var $$13,$$14,$$16,self=null==$$12.$$s?this:$$12.$$s;return self.$push("try {"),$send(self,"indent",[],(($$13=function(){var self=null==$$13.$$s?this:$$13.$$s;return self.$line(self.$stmt(self.$body_code()))}).$$s=self,$$13.$$arity=0,$$13)),self.$line("} catch ($err) {"),$send(self,"indent",[],(($$14=function(){var $$15,self=null==$$14.$$s?this:$$14.$$s;return $truthy(self["$has_rescue_else?"]())&&self.$line("$no_errors = false;"),$send(self.$children()["$[]"]($range(1,-1,!1)),"each_with_index",[],(($$15=function(child,idx){var self=null==$$15.$$s?this:$$15.$$s,$ret_or_5=nil;return null==self.level&&(self.level=nil),null==child&&(child=nil),null==idx&&(idx=nil),$truthy($truthy($ret_or_5=child)?child.$type()["$=="]("resbody"):$ret_or_5)?(idx["$=="](0)||self.$push(" else "),self.$line(self.$process(child,self.level))):nil}).$$s=self,$$15.$$arity=2,$$15)),self.$push(" else { throw $err; }")}).$$s=self,$$14.$$arity=0,$$14)),self.$line("}"),$truthy(self["$handle_rescue_else_manually?"]())&&(self.$push("finally {"),$send(self,"indent",[],(($$16=function(){var $$17,self=null==$$16.$$s?this:$$16.$$s;return self.$line("if ($no_errors) { "),$send(self,"indent",[],(($$17=function(){var self=null==$$17.$$s?this:$$17.$$s;return self.$line(self.$stmt(self.$rescue_else_code()))}).$$s=self,$$17.$$arity=0,$$17)),self.$line("}")}).$$s=self,$$16.$$arity=0,$$16)),self.$push("}")),$truthy(self.$retry_id())?self.$wrap(self.$retry_id()+": do { "," break; } while(1)"):nil}).$$s=self,$$12.$$arity=0,$$12)),$truthy($truthy($ret_or_6=self["$expr?"]())?$ret_or_6:self["$recv?"]())?self.$wrap("(function() { ","})()"):nil},$RescueNode_gen_retry_id$21.$$arity=0),Opal.def(self,"$body_code",$RescueNode_gen_retry_id$21=function(){var self=this,body_code=nil,$ret_or_7=nil,body_code=$truthy($truthy($ret_or_7=self.$body()["$nil?"]())?$ret_or_7:self.$body().$type()["$=="]("resbody"))?self.$s("nil"):self.$body();return $truthy(self["$stmt?"]())||(body_code=self.$compiler().$returns(body_code)),body_code},$RescueNode_gen_retry_id$21.$$arity=0),Opal.def(self,"$rescue_else_code",$RescueNode_gen_retry_id$21=function(){var rescue_else_code=nil,rescue_else_code=this.$scope().$rescue_else_sexp();return $truthy(this["$stmt?"]())||(rescue_else_code=this.$compiler().$returns(rescue_else_code)),rescue_else_code},$RescueNode_gen_retry_id$21.$$arity=0),Opal.def(self,"$handle_rescue_else_manually?",$RescueNode_gen_retry_id$21=function(){var $ret_or_8;return $truthy($ret_or_8=this["$in_ensure?"]()["$!"]())?this["$has_rescue_else?"]():$ret_or_8},$RescueNode_gen_retry_id$21.$$arity=0),Opal.def(self,"$gen_retry_id",$RescueNode_gen_retry_id$21=function(){var self=this,$ret_or_9=nil;return self.retry_id=$truthy($ret_or_9=self.retry_id)?$ret_or_9:self.$scope().$gen_retry_id()},$RescueNode_gen_retry_id$21.$$arity=0),self.$attr_reader("retry_id")}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$ResBodyNode_rescue_body$27,$ResBodyNode_klasses$26){[$ResBodyNode_rescue_body$27=$klass($base,$ResBodyNode_rescue_body$27,"ResBodyNode")].concat($ResBodyNode_klasses$26),$ResBodyNode_rescue_body$27.$handle("resbody"),$ResBodyNode_rescue_body$27.$children("klasses_sexp","lvar","body"),Opal.def($ResBodyNode_rescue_body$27,"$compile",$ResBodyNode_klasses$26=function(){var $$23;return this.$push("if (Opal.rescue($err, ",this.$expr(this.$klasses()),")) {"),$send(this,"indent",[],(($$23=function(){var $$24,self=null==$$23.$$s?this:$$23.$$s;return $truthy(self.$lvar())&&self.$push(self.$expr(self.$lvar().$updated(nil,[].concat(Opal.to_a(self.$lvar().$children())).concat([self.$s("js_tmp","$err")])))),self.$line("try {"),$send(self,"indent",[],(($$24=function(){var $$25,self=null==$$24.$$s?this:$$24.$$s;return $send(self,"in_resbody",[],(($$25=function(){var self=null==$$25.$$s?this:$$25.$$s;return self.$line(self.$stmt(self.$rescue_body()))}).$$s=self,$$25.$$arity=0,$$25))}).$$s=self,$$24.$$arity=0,$$24)),self.$line("} finally { Opal.pop_exception(); }")}).$$s=this,$$23.$$arity=0,$$23)),this.$line("}")},$ResBodyNode_klasses$26.$$arity=0),Opal.def($ResBodyNode_rescue_body$27,"$klasses",$ResBodyNode_klasses$26=function(){var $ret_or_10;return $truthy($ret_or_10=this.$klasses_sexp())?$ret_or_10:this.$s("array",this.$s("const",nil,"StandardError"))},$ResBodyNode_klasses$26.$$arity=0),Opal.def($ResBodyNode_rescue_body$27,"$rescue_body",$ResBodyNode_rescue_body$27=function(){var self=this,body_code=nil,$ret_or_11=nil,body_code=$truthy($ret_or_11=self.$body())?$ret_or_11:self.$s("nil");return $truthy(self["$stmt?"]())||(body_code=self.$compiler().$returns(body_code)),body_code},$ResBodyNode_rescue_body$27.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$RetryNode_compile$28,$parent_nesting){$RetryNode_compile$28=$klass($base,$RetryNode_compile$28,"RetryNode"),[$RetryNode_compile$28].concat($parent_nesting);return $RetryNode_compile$28.$handle("retry"),Opal.def($RetryNode_compile$28,"$compile",$RetryNode_compile$28=function(){return $truthy(this["$in_resbody?"]())||this.$error("Invalid retry"),this.$push("continue "+this.$scope().$current_rescue().$gen_retry_id())},$RetryNode_compile$28.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/case"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send=Opal.send,$truthy=Opal.truthy,$range=Opal.range;return Opal.add_stubs(["$require","$handle","$children","$in_case","$compiler","$compile_code","$needs_closure?","$wrap","$condition","$[]=","$case_stmt","$-","$add_local","$push","$expr","$each_with_index","$case_parts","$line","$type","$===","$returns","$==","$stmt","$!","$stmt?","$[]","$when_checks","$js_truthy","$s","$process","$body_code","$last"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$CaseNode_case_stmt$7,$CaseNode_case_parts$6){[$CaseNode_case_stmt$7=$klass($base,$CaseNode_case_stmt$7,"CaseNode")].concat($CaseNode_case_parts$6),$CaseNode_case_stmt$7.$handle("case"),$CaseNode_case_stmt$7.$children("condition"),Opal.def($CaseNode_case_stmt$7,"$compile",$CaseNode_case_parts$6=function(){var $$2;return $send(this.$compiler(),"in_case",[],(($$2=function(){var self=null==$$2.$$s?this:$$2.$$s;return self.$compile_code(),$truthy(self["$needs_closure?"]())?self.$wrap("(function() {","})()"):nil}).$$s=this,$$2.$$arity=0,$$2))},$CaseNode_case_parts$6.$$arity=0),Opal.def($CaseNode_case_stmt$7,"$compile_code",$CaseNode_case_parts$6=function(){var $$4,rhs,self=this,handled_else=nil,lhs=nil,$ret_or_1=nil,handled_else=!1;return $truthy(self.$condition())&&(lhs=["cond",!0],$send(self.$case_stmt(),"[]=",Opal.to_a(lhs)),rhs=1,"number"==typeof(lhs=lhs.length)&&"number"==typeof rhs||lhs["$-"](rhs),self.$add_local("$case"),self.$push("$case = ",self.$expr(self.$condition()),";")),$send(self.$case_parts(),"each_with_index",[],(($$4=function(wen,idx){var self=null==$$4.$$s?this:$$4.$$s,$case=nil;return null==wen&&(wen=nil),null==idx&&(idx=nil),$truthy(wen)?(self.$line(),$case=wen.$type(),"when"["$==="]($case)?($truthy(self["$needs_closure?"]())&&(wen=self.$compiler().$returns(wen)),idx["$=="](0)||self.$push("else "),self.$push(self.$stmt(wen))):(handled_else=!0,$truthy(self["$needs_closure?"]())&&(wen=self.$compiler().$returns(wen)),self.$push("else {",self.$stmt(wen),"}"))):nil}).$$s=self,$$4.$$arity=2,$$4)),$truthy($truthy($ret_or_1=self["$needs_closure?"]())?handled_else["$!"]():$ret_or_1)?(self.$line(),self.$push("else { return nil }")):nil},$CaseNode_case_parts$6.$$arity=0),Opal.def($CaseNode_case_stmt$7,"$needs_closure?",$CaseNode_case_parts$6=function(){return this["$stmt?"]()["$!"]()},$CaseNode_case_parts$6.$$arity=0),Opal.def($CaseNode_case_stmt$7,"$case_parts",$CaseNode_case_parts$6=function(){return this.$children()["$[]"]($range(1,-1,!1))},$CaseNode_case_parts$6.$$arity=0),Opal.def($CaseNode_case_stmt$7,"$case_stmt",$CaseNode_case_stmt$7=function(){return this.$compiler().$case_stmt()},$CaseNode_case_stmt$7.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$WhenNode_body_code$12,$WhenNode_case_stmt$11){$WhenNode_body_code$12=$klass($base,$WhenNode_body_code$12,"WhenNode"),[$WhenNode_body_code$12].concat($WhenNode_case_stmt$11);return $WhenNode_body_code$12.$$prototype.level=nil,$WhenNode_body_code$12.$handle("when"),$WhenNode_body_code$12.$children("whens","body"),Opal.def($WhenNode_body_code$12,"$compile",$WhenNode_case_stmt$11=function(){var $$9;return this.$push("if ("),$send(this.$when_checks(),"each_with_index",[],(($$9=function(check,idx){var call,self=null==$$9.$$s?this:$$9.$$s;return null==check&&(check=nil),null==idx&&(idx=nil),idx["$=="](0)||self.$push(" || "),check.$type()["$=="]("splat")?(self.$push("(function($splt) { for (var i = 0, ii = $splt.length; i < ii; i++) {"),$truthy(self.$case_stmt()["$[]"]("cond"))?self.$push("if ($splt[i]['$===']($case)) { return true; }"):self.$push("if (",self.$js_truthy(check),")) { return true; }"),self.$push("} return false; })(",self.$expr(check.$children()["$[]"](0)),")")):$truthy(self.$case_stmt()["$[]"]("cond"))?(call=self.$s("send",check,"===",self.$s("arglist",self.$s("js_tmp","$case"))),self.$push(self.$expr(call))):self.$push(self.$js_truthy(check))}).$$s=this,$$9.$$arity=2,$$9)),this.$push(") {",this.$process(this.$body_code(),this.level),"}")},$WhenNode_case_stmt$11.$$arity=0),Opal.def($WhenNode_body_code$12,"$when_checks",$WhenNode_case_stmt$11=function(){return this.$children()["$[]"]($range(0,-2,!1))},$WhenNode_case_stmt$11.$$arity=0),Opal.def($WhenNode_body_code$12,"$case_stmt",$WhenNode_case_stmt$11=function(){return this.$compiler().$case_stmt()},$WhenNode_case_stmt$11.$$arity=0),Opal.def($WhenNode_body_code$12,"$body_code",$WhenNode_body_code$12=function(){var $ret_or_2;return $truthy($ret_or_2=this.$children().$last())?$ret_or_2:this.$s("nil")},$WhenNode_body_code$12.$$arity=0),nil&&"body_code"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/super"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$slice=Opal.slice,$truthy=Opal.truthy,$send=Opal.send;return Opal.add_stubs(["$require","$include?","$type","$s","$helper","$push","$compile_receiver","$compile_method_body","$compile_method_name","$compile_arguments","$compile_block_pass","$private","$def?","$scope","$find_parent_def","$to_s","$mid","$def_scope","$identify!","$method_id","$def_scope_identity","$defined_check_param","$allow_stubs","$super_chain","$join","$map","$implicit_arguments_param","$super_method_invocation","$iter?","$super_block_invocation","$raise","$handle","$wrap","$uses_block!","$compile_using_send","$==","$iter","$uses_zuper=","$-","$block_name","$!","$<<","$empty?","$children","$arglist","$expr","$==="]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$BaseSuperNode_compile_method_name$13,$BaseSuperNode_compile_method_body$12){var $BaseSuperNode_initialize$1;[$BaseSuperNode_compile_method_name$13=$klass($base,$BaseSuperNode_compile_method_name$13,"BaseSuperNode")].concat($BaseSuperNode_compile_method_body$12),$BaseSuperNode_compile_method_name$13.$$prototype.sexp=$BaseSuperNode_compile_method_name$13.$$prototype.def_scope=nil,Opal.def($BaseSuperNode_compile_method_name$13,"$initialize",$BaseSuperNode_initialize$1=function($a){var $b,rest,$zuper_ii,$c=$BaseSuperNode_initialize$1.$$p,args=nil,last_child=nil,$ret_or_1=nil,$zuper=nil,$zuper_i=nil;for($c&&($BaseSuperNode_initialize$1.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return Opal.slice.call(arguments,0,arguments.length),$send2(this,$find_super(this,"initialize",$BaseSuperNode_initialize$1,!1,!0),"initialize",$zuper,$c),args=[].concat(Opal.to_a(this.sexp)),$c=($c=($b=[].concat(Opal.to_a(args))).length-1)<0?0:$c,rest=$slice.call($b,0,$c),last_child=null==$b[$c]?nil:$b[$c],$truthy($truthy($ret_or_1=last_child)?["iter","block_pass"]["$include?"](last_child.$type()):$ret_or_1)?(this.iter=last_child,args=rest):this.iter=this.$s("js_tmp","null"),this.arglist=$send(this,"s",["arglist"].concat(Opal.to_a(args))),this.recvr=this.$s("self")},$BaseSuperNode_initialize$1.$$arity=-1),Opal.def($BaseSuperNode_compile_method_name$13,"$compile_using_send",$BaseSuperNode_compile_method_body$12=function(){return this.$helper("send2"),this.$push("$send2("),this.$compile_receiver(),this.$compile_method_body(),this.$compile_method_name(),this.$compile_arguments(),this.$compile_block_pass(),this.$push(")")},$BaseSuperNode_compile_method_body$12.$$arity=0),$BaseSuperNode_compile_method_name$13.$private(),Opal.def($BaseSuperNode_compile_method_name$13,"$def_scope",$BaseSuperNode_compile_method_body$12=function(){var self=this,$ret_or_2=nil;return self.def_scope=$truthy($ret_or_2=self.def_scope)?$ret_or_2:$truthy(self.$scope()["$def?"]())?self.$scope():self.$scope().$find_parent_def()},$BaseSuperNode_compile_method_body$12.$$arity=0),Opal.def($BaseSuperNode_compile_method_name$13,"$defined_check_param",$BaseSuperNode_compile_method_body$12=function(){return"false"},$BaseSuperNode_compile_method_body$12.$$arity=0),Opal.def($BaseSuperNode_compile_method_name$13,"$implicit_arguments_param",$BaseSuperNode_compile_method_body$12=function(){return"false"},$BaseSuperNode_compile_method_body$12.$$arity=0),Opal.def($BaseSuperNode_compile_method_name$13,"$method_id",$BaseSuperNode_compile_method_body$12=function(){return this.$def_scope().$mid().$to_s()},$BaseSuperNode_compile_method_body$12.$$arity=0),Opal.def($BaseSuperNode_compile_method_name$13,"$def_scope_identity",$BaseSuperNode_compile_method_body$12=function(){return this.$def_scope()["$identify!"](this.$def_scope().$mid())},$BaseSuperNode_compile_method_body$12.$$arity=0),Opal.def($BaseSuperNode_compile_method_name$13,"$allow_stubs",$BaseSuperNode_compile_method_body$12=function(){return"true"},$BaseSuperNode_compile_method_body$12.$$arity=0),Opal.def($BaseSuperNode_compile_method_name$13,"$super_method_invocation",$BaseSuperNode_compile_method_body$12=function(){return this.$helper("find_super"),"$find_super(self, '"+this.$method_id()+"', "+this.$def_scope_identity()+", "+this.$defined_check_param()+", "+this.$allow_stubs()+")"},$BaseSuperNode_compile_method_body$12.$$arity=0),Opal.def($BaseSuperNode_compile_method_name$13,"$super_block_invocation",$BaseSuperNode_compile_method_body$12=function(){var $a,$$11,chain,cur_defn;return this.$helper("find_block_super"),$a=this.$scope().$super_chain(),chain=null==($a=Opal.to_ary($a))[0]?nil:$a[0],cur_defn=null==$a[1]?nil:$a[1],"$find_block_super(self, "+(null==$a[2]?nil:$a[2])+", ("+$send(chain,"map",[],(($$11=function(c){null==$$11.$$s||$$11.$$s;return null==c&&(c=nil),c+".$$def"}).$$s=this,$$11.$$arity=1,$$11)).$join(" || ")+" || "+cur_defn+"), "+this.$defined_check_param()+", "+this.$implicit_arguments_param()+")"},$BaseSuperNode_compile_method_body$12.$$arity=0),Opal.def($BaseSuperNode_compile_method_name$13,"$compile_method_body",$BaseSuperNode_compile_method_body$12=function(){return this.$push(", "),$truthy(this.$scope()["$def?"]())?this.$push(this.$super_method_invocation()):$truthy(this.$scope()["$iter?"]())?this.$push(this.$super_block_invocation()):this.$raise("super must be called from method body or block")},$BaseSuperNode_compile_method_body$12.$$arity=0),Opal.def($BaseSuperNode_compile_method_name$13,"$compile_method_name",$BaseSuperNode_compile_method_name$13=function(){var $a,mid;return $truthy(this.$scope()["$def?"]())?this.$push(", '"+this.$method_id()+"'"):$truthy(this.$scope()["$iter?"]())?($a=this.$scope().$super_chain(),null==($a=Opal.to_ary($a))[0]||$a[0],null==$a[1]||$a[1],mid=null==$a[2]?nil:$a[2],this.$push(", "+mid)):nil},$BaseSuperNode_compile_method_name$13.$$arity=0)}($nesting[0],$$($nesting,"CallNode"),$nesting),function($base,$DefinedSuperNode_compile$16,$DefinedSuperNode_defined_check_param$15){[$DefinedSuperNode_compile$16=$klass($base,$DefinedSuperNode_compile$16,"DefinedSuperNode")].concat($DefinedSuperNode_defined_check_param$15),$DefinedSuperNode_compile$16.$handle("defined_super"),Opal.def($DefinedSuperNode_compile$16,"$allow_stubs",$DefinedSuperNode_defined_check_param$15=function(){return"false"},$DefinedSuperNode_defined_check_param$15.$$arity=0),Opal.def($DefinedSuperNode_compile$16,"$defined_check_param",$DefinedSuperNode_defined_check_param$15=function(){return"true"},$DefinedSuperNode_defined_check_param$15.$$arity=0),Opal.def($DefinedSuperNode_compile$16,"$compile",$DefinedSuperNode_compile$16=function(){return this.$compile_receiver(),this.$compile_method_body(),this.$wrap("((",') != null ? "super" : nil)')},$DefinedSuperNode_compile$16.$$arity=0)}($nesting[0],$$($nesting,"BaseSuperNode"),$nesting),function($base,$SuperNode_compile$18,$parent_nesting){var $SuperNode_initialize$17;[$SuperNode_compile$18=$klass($base,$SuperNode_compile$18,"SuperNode")].concat($parent_nesting),$SuperNode_compile$18.$handle("super"),Opal.def($SuperNode_compile$18,"$initialize",$SuperNode_initialize$17=function($a){var $zuper_ii,$iter=$SuperNode_initialize$17.$$p,$zuper=nil,$zuper_i=nil;for($iter&&($SuperNode_initialize$17.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return Opal.slice.call(arguments,0,arguments.length),$send2(this,$find_super(this,"initialize",$SuperNode_initialize$17,!1,!0),"initialize",$zuper,$iter),$truthy(this.$scope()["$def?"]())?this.$scope()["$uses_block!"]():nil},$SuperNode_initialize$17.$$arity=-1),Opal.def($SuperNode_compile$18,"$compile",$SuperNode_compile$18=function(){return this.$compile_using_send()},$SuperNode_compile$18.$$arity=0)}($nesting[0],$$($nesting,"BaseSuperNode"),$nesting),function($base,$ZsuperNode_block_name$23,$ZsuperNode_compile_arguments$22){var $ZsuperNode_initialize$20,$ZsuperNode_block_name$23=$klass($base,$ZsuperNode_block_name$23,"ZsuperNode"),$nesting=[$ZsuperNode_block_name$23].concat($ZsuperNode_compile_arguments$22);return $ZsuperNode_block_name$23.$handle("zsuper"),Opal.def($ZsuperNode_block_name$23,"$implicit_arguments_param",$ZsuperNode_compile_arguments$22=function(){return"true"},$ZsuperNode_compile_arguments$22.$$arity=0),Opal.def($ZsuperNode_block_name$23,"$initialize",$ZsuperNode_initialize$20=function($a){var $zuper_ii,$iter=$ZsuperNode_initialize$20.$$p,$zuper=nil,$zuper_i=nil;for($iter&&($ZsuperNode_initialize$20.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return Opal.slice.call(arguments,0,arguments.length),$send2(this,$find_super(this,"initialize",$ZsuperNode_initialize$20,!1,!0),"initialize",$zuper,$iter),this.$iter().$type()["$=="]("iter")?nil:(this.$scope()["$uses_block!"](),this.iter=this.$s("js_tmp","$iter"))},$ZsuperNode_initialize$20.$$arity=-1),Opal.def($ZsuperNode_block_name$23,"$compile",$ZsuperNode_compile_arguments$22=function(){var block_pass,rhs,self=this,lhs=nil,implicit_args=nil,$ret_or_3=nil;return $truthy(self.$def_scope())&&(lhs=[!0],$send(self.$def_scope(),"uses_zuper=",Opal.to_a(lhs)),rhs=1,"number"==typeof(lhs=lhs.length)&&"number"==typeof rhs||lhs["$-"](rhs),implicit_args=[self.$s("js_tmp","$zuper")],$truthy($truthy($ret_or_3=self.$block_name())?self.$iter()["$!"]():$ret_or_3)&&(block_pass=self.$s("block_pass",self.$s("lvar",self.$block_name())),implicit_args["$<<"](block_pass)),self.arglist=$send(self,"s",["arglist"].concat(Opal.to_a(implicit_args)))),self.$compile_using_send()},$ZsuperNode_compile_arguments$22.$$arity=0),Opal.def($ZsuperNode_block_name$23,"$compile_arguments",$ZsuperNode_compile_arguments$22=function(){return this.$push(", "),$truthy(this.$arglist().$children()["$empty?"]())?this.$push("[]"):this.$push(this.$expr(this.$arglist()))},$ZsuperNode_compile_arguments$22.$$arity=0),Opal.def($ZsuperNode_block_name$23,"$block_name",$ZsuperNode_block_name$23=function(){var self=this,$case=nil;return $case=self.$def_scope(),$$$($$$($$($nesting,"Opal"),"Nodes"),"IterNode")["$==="]($case)||$$$($$$($$($nesting,"Opal"),"Nodes"),"DefNode")["$==="]($case)?self.$def_scope().$block_name():self.$raise("Don't know what to do with super in the scope "+self.$def_scope())},$ZsuperNode_block_name$23.$$arity=0),nil&&"block_name"}($nesting[0],$$($nesting,"SuperNode"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/version"]=function(Opal){Opal.top;var $nesting=[],$module=(Opal.nil,Opal.$$$,Opal.$$,Opal.module);return function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return Opal.const_set($nesting[0],"VERSION","1.3.0.dev")}($nesting[0],$nesting)},Opal.modules["opal/nodes/top"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$send=Opal.send,$truthy=Opal.truthy;return Opal.add_stubs(["$require","$handle","$children","$push","$version_comment","$opening","$in_scope","$use_strict?","$compiler","$line","$stmt","$stmts","$is_a?","$eval?","$add_temp","$add_used_helpers","$add_used_operators","$to_vars","$scope","$compile_method_stubs","$compile_irb_vars","$compile_end_construct","$closing","$requirable?","$inspect","$module_name","$file","$esm?","$returns","$body","$irb?","$each","$to_a","$helpers","$operator_helpers","$[]","$method_missing?","$method_calls","$join","$map","$empty?","$eof_content"]),self.$require("pathname"),self.$require("opal/version"),self.$require("opal/nodes/scope"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$TopNode_version_comment$14,$TopNode_compile_end_construct$13){var $TopNode_version_comment$14=$klass($base,$TopNode_version_comment$14,"TopNode"),$nesting=[$TopNode_version_comment$14].concat($TopNode_compile_end_construct$13);return $TopNode_version_comment$14.$handle("top"),$TopNode_version_comment$14.$children("body"),Opal.def($TopNode_version_comment$14,"$compile",$TopNode_compile_end_construct$13=function(){var $$2;return this.$push(this.$version_comment()),this.$opening(),$send(this,"in_scope",[],(($$2=function(){var self=null==$$2.$$s?this:$$2.$$s,body_code=nil;return $truthy(self.$compiler()["$use_strict?"]())&&self.$line('"use strict";'),body_code=self.$stmt(self.$stmts()),$truthy(body_code["$is_a?"]($$($nesting,"Array")))||(body_code=[body_code]),$truthy(self.$compiler()["$eval?"]())?self.$add_temp("$nesting = self.$$is_a_module ? [self] : [self.$$class]"):(self.$add_temp("self = Opal.top"),self.$add_temp("$nesting = []")),self.$add_temp("nil = Opal.nil"),self.$add_temp("$$$ = Opal.$$$"),self.$add_temp("$$ = Opal.$$"),self.$add_used_helpers(),self.$add_used_operators(),self.$line(self.$scope().$to_vars()),self.$compile_method_stubs(),self.$compile_irb_vars(),self.$compile_end_construct(),self.$line(body_code)}).$$s=this,$$2.$$arity=0,$$2)),this.$closing()},$TopNode_compile_end_construct$13.$$arity=0),Opal.def($TopNode_version_comment$14,"$opening",$TopNode_compile_end_construct$13=function(){return $truthy(this.$compiler()["$requirable?"]())?this.$line("Opal.modules["+$$$($$($nesting,"Opal"),"Compiler").$module_name(this.$compiler().$file()).$inspect()+"] = function(Opal) {"):$truthy(this.$compiler()["$eval?"]())?this.$line("(function(Opal, self) {"):$truthy(this.$compiler()["$esm?"]())?this.$line("export default (function(Opal) {"):this.$line("(function(Opal) {")},$TopNode_compile_end_construct$13.$$arity=0),Opal.def($TopNode_version_comment$14,"$closing",$TopNode_compile_end_construct$13=function(){return $truthy(this.$compiler()["$requirable?"]())?this.$line("};\n"):$truthy(this.$compiler()["$eval?"]())?this.$line("})(Opal, self)"):this.$line("})(Opal);\n")},$TopNode_compile_end_construct$13.$$arity=0),Opal.def($TopNode_version_comment$14,"$stmts",$TopNode_compile_end_construct$13=function(){return this.$compiler().$returns(this.$body())},$TopNode_compile_end_construct$13.$$arity=0),Opal.def($TopNode_version_comment$14,"$compile_irb_vars",$TopNode_compile_end_construct$13=function(){return $truthy(this.$compiler()["$irb?"]())?this.$line("if (!Opal.irb_vars) { Opal.irb_vars = {}; }"):nil},$TopNode_compile_end_construct$13.$$arity=0),Opal.def($TopNode_version_comment$14,"$add_used_helpers",$TopNode_compile_end_construct$13=function(){var $$8;return $send(this.$compiler().$helpers().$to_a(),"each",[],(($$8=function(h){var self=null==$$8.$$s?this:$$8.$$s;return null==h&&(h=nil),self.$add_temp("$"+h+" = Opal."+h)}).$$s=this,$$8.$$arity=1,$$8))},$TopNode_compile_end_construct$13.$$arity=0),Opal.def($TopNode_version_comment$14,"$add_used_operators",$TopNode_compile_end_construct$13=function(){var $$10,operators=this.$compiler().$operator_helpers().$to_a();return $send(operators,"each",[],(($$10=function(op){var name,self=null==$$10.$$s?this:$$10.$$s;return null==op&&(op=nil),name=$$$($$$($$($nesting,"Nodes"),"CallNode"),"OPERATORS")["$[]"](op),self.$line("function $rb_"+name+"(lhs, rhs) {"),self.$line("  return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs "+op+" rhs : lhs['$"+op+"'](rhs);"),self.$line("}")}).$$s=this,$$10.$$arity=1,$$10))},$TopNode_compile_end_construct$13.$$arity=0),Opal.def($TopNode_version_comment$14,"$compile_method_stubs",$TopNode_compile_end_construct$13=function(){var $$12,calls=nil,stubs=nil;return $truthy(this.$compiler()["$method_missing?"]())?(calls=this.$compiler().$method_calls(),stubs=$send(calls.$to_a(),"map",[],(($$12=function(k){null==$$12.$$s||$$12.$$s;return null==k&&(k=nil),"'$"+k+"'"}).$$s=this,$$12.$$arity=1,$$12)).$join(", "),$truthy(stubs["$empty?"]())?nil:this.$line("Opal.add_stubs(["+stubs+"]);")):nil},$TopNode_compile_end_construct$13.$$arity=0),Opal.def($TopNode_version_comment$14,"$compile_end_construct",$TopNode_compile_end_construct$13=function(){var content=nil;return $truthy(content=this.$compiler().$eof_content())?(this.$line("var $__END__ = Opal.Object.$new();"),this.$line("$__END__.$read = function() { return "+content.$inspect()+"; };")):nil},$TopNode_compile_end_construct$13.$$arity=0),Opal.def($TopNode_version_comment$14,"$version_comment",$TopNode_version_comment$14=function(){return"/* Generated by Opal "+$$$($$($nesting,"Opal"),"VERSION")+" */"},$TopNode_version_comment$14.$$arity=0),nil&&"version_comment"}($nesting[0],$$($nesting,"ScopeNode"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/while"]=function(Opal){function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send=Opal.send,$truthy=Opal.truthy;return Opal.add_stubs(["$require","$handle","$children","$js_truthy","$test","$with_temp","$in_while","$compiler","$wrap_in_closure?","$[]=","$while_loop","$-","$indent","$stmt","$body","$uses_redo?","$compile_with_redo","$compile_without_redo","$wrap","$private","$push","$compile_while","$while_open","$while_close","$line","$[]","$expr?","$recv?"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$WhileNode_wrap_in_closure$ques$12,$WhileNode_uses_redo$ques$11){[$WhileNode_wrap_in_closure$ques$12=$klass($base,$WhileNode_wrap_in_closure$ques$12,"WhileNode")].concat($WhileNode_uses_redo$ques$11),$WhileNode_wrap_in_closure$ques$12.$handle("while"),$WhileNode_wrap_in_closure$ques$12.$children("test","body"),Opal.def($WhileNode_wrap_in_closure$ques$12,"$compile",$WhileNode_uses_redo$ques$11=function(){var $$2,test_code=this.$js_truthy(this.$test());return $send(this,"with_temp",[],(($$2=function(redo_var){var $$3,self=null==$$2.$$s?this:$$2.$$s;return null==redo_var&&(redo_var=nil),$send(self.$compiler(),"in_while",[],(($$3=function(){var $$4,body_code,self=null==$$3.$$s?this:$$3.$$s,$writer=nil;return $truthy(self["$wrap_in_closure?"]())&&($writer=["closure",!0],$send(self.$while_loop(),"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]),$writer=["redo_var",redo_var],$send(self.$while_loop(),"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)],body_code=$send(self,"indent",[],(($$4=function(){var self=null==$$4.$$s?this:$$4.$$s;return self.$stmt(self.$body())}).$$s=self,$$4.$$arity=0,$$4)),$truthy(self["$uses_redo?"]())?self.$compile_with_redo(test_code,body_code,redo_var):self.$compile_without_redo(test_code,body_code)}).$$s=self,$$3.$$arity=0,$$3))}).$$s=this,$$2.$$arity=1,$$2)),$truthy(this["$wrap_in_closure?"]())?this.$wrap("(function() {","; return nil; })()"):nil},$WhileNode_uses_redo$ques$11.$$arity=0),$WhileNode_wrap_in_closure$ques$12.$private(),Opal.def($WhileNode_wrap_in_closure$ques$12,"$compile_with_redo",$WhileNode_uses_redo$ques$11=function(test_code,body_code,redo_var){return this.$push(redo_var+" = false; "),this.$compile_while([redo_var," || ",test_code],[redo_var+" = false;",body_code])},$WhileNode_uses_redo$ques$11.$$arity=3),Opal.def($WhileNode_wrap_in_closure$ques$12,"$compile_without_redo",$WhileNode_uses_redo$ques$11=function(test_code,body_code){return this.$compile_while([test_code],[body_code])},$WhileNode_uses_redo$ques$11.$$arity=2),Opal.def($WhileNode_wrap_in_closure$ques$12,"$compile_while",$WhileNode_uses_redo$ques$11=function(test_code,body_code){var $$8;return $send(this,"push",[this.$while_open()].concat(Opal.to_a(test_code)).concat([this.$while_close()])),$send(this,"indent",[],(($$8=function(){var self=null==$$8.$$s?this:$$8.$$s;return $send(self,"line",Opal.to_a(body_code))}).$$s=this,$$8.$$arity=0,$$8)),this.$line("}")},$WhileNode_uses_redo$ques$11.$$arity=2),Opal.def($WhileNode_wrap_in_closure$ques$12,"$while_open",$WhileNode_uses_redo$ques$11=function(){return"while ("},$WhileNode_uses_redo$ques$11.$$arity=0),Opal.def($WhileNode_wrap_in_closure$ques$12,"$while_close",$WhileNode_uses_redo$ques$11=function(){return") {"},$WhileNode_uses_redo$ques$11.$$arity=0),Opal.def($WhileNode_wrap_in_closure$ques$12,"$uses_redo?",$WhileNode_uses_redo$ques$11=function(){return this.$while_loop()["$[]"]("use_redo")},$WhileNode_uses_redo$ques$11.$$arity=0),Opal.def($WhileNode_wrap_in_closure$ques$12,"$wrap_in_closure?",$WhileNode_wrap_in_closure$ques$12=function(){var $ret_or_1;return $truthy($ret_or_1=this["$expr?"]())?$ret_or_1:this["$recv?"]()},$WhileNode_wrap_in_closure$ques$12.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$UntilNode_while_close$14,$UntilNode_while_open$13){[$UntilNode_while_close$14=$klass($base,$UntilNode_while_close$14,"UntilNode")].concat($UntilNode_while_open$13),$UntilNode_while_close$14.$handle("until"),$UntilNode_while_close$14.$private(),Opal.def($UntilNode_while_close$14,"$while_open",$UntilNode_while_open$13=function(){return"while (!("},$UntilNode_while_open$13.$$arity=0),Opal.def($UntilNode_while_close$14,"$while_close",$UntilNode_while_close$14=function(){return")) {"},$UntilNode_while_close$14.$$arity=0)}($nesting[0],$$($nesting,"WhileNode"),$nesting),function($base,$WhilePostNode_while_close$17,$WhilePostNode_compile_while$15){[$WhilePostNode_while_close$17=$klass($base,$WhilePostNode_while_close$17,"WhilePostNode")].concat($WhilePostNode_compile_while$15),$WhilePostNode_while_close$17.$handle("while_post"),$WhilePostNode_while_close$17.$private(),Opal.def($WhilePostNode_while_close$17,"$compile_while",$WhilePostNode_compile_while$15=function(test_code,body_code){var $$16;return this.$push("do {"),$send(this,"indent",[],(($$16=function(){var self=null==$$16.$$s?this:$$16.$$s;return $send(self,"line",Opal.to_a(body_code))}).$$s=this,$$16.$$arity=0,$$16)),$send(this,"line",["} ",this.$while_open()].concat(Opal.to_a(test_code)).concat([this.$while_close()]))},$WhilePostNode_compile_while$15.$$arity=2),Opal.def($WhilePostNode_while_close$17,"$while_close",$WhilePostNode_while_close$17=function(){return");"},$WhilePostNode_while_close$17.$$arity=0)}($nesting[0],$$($nesting,"WhileNode"),$nesting),function($base,$UntilPostNode_while_close$19,$UntilPostNode_while_open$18){$UntilPostNode_while_close$19=$klass($base,$UntilPostNode_while_close$19,"UntilPostNode"),[$UntilPostNode_while_close$19].concat($UntilPostNode_while_open$18);return $UntilPostNode_while_close$19.$handle("until_post"),$UntilPostNode_while_close$19.$private(),Opal.def($UntilPostNode_while_close$19,"$while_open",$UntilPostNode_while_open$18=function(){return"while(!("},$UntilPostNode_while_open$18.$$arity=0),Opal.def($UntilPostNode_while_close$19,"$while_close",$UntilPostNode_while_close$19=function(){return"));"},$UntilPostNode_while_close$19.$$arity=0),nil&&"while_close"}($nesting[0],$$($nesting,"WhilePostNode"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/hash"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$send=Opal.send,$truthy=Opal.truthy,$hash2=Opal.hash2;return Opal.add_stubs(["$require","$handle","$attr_accessor","$each","$children","$type","$===","$<<","$[]","$all?","$keys","$include?","$has_kwsplat","$compile_merge","$simple_keys?","$compile_hash2","$compile_hash","$helper","$==","$empty?","$expr","$s","$each_with_index","$push","$wrap","$times","$size","$inspect","$to_s","$values","$[]=","$-","$join","$value"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$HashNode_compile_hash2$11,$HashNode_compile_hash$9){var $HashNode_initialize$1;[$HashNode_compile_hash2$11=$klass($base,$HashNode_compile_hash2$11,"HashNode")].concat($HashNode_compile_hash$9),$HashNode_compile_hash2$11.$handle("hash"),$HashNode_compile_hash2$11.$attr_accessor("has_kwsplat","keys","values"),Opal.def($HashNode_compile_hash2$11,"$initialize",$HashNode_initialize$1=function($a){var $$2,$zuper_ii,$iter=$HashNode_initialize$1.$$p,$zuper=nil,$zuper_i=nil;for($iter&&($HashNode_initialize$1.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return Opal.slice.call(arguments,0,arguments.length),$send2(this,$find_super(this,"initialize",$HashNode_initialize$1,!1,!0),"initialize",$zuper,$iter),this.has_kwsplat=!1,this.keys=[],this.values=[],$send(this.$children(),"each",[],(($$2=function(child){var self=null==$$2.$$s?this:$$2.$$s,$case=nil;return null==self.keys&&(self.keys=nil),null==self.values&&(self.values=nil),null==child&&(child=nil),$case=child.$type(),"kwsplat"["$==="]($case)?self.has_kwsplat=!0:"pair"["$==="]($case)?(self.keys["$<<"](child.$children()["$[]"](0)),self.values["$<<"](child.$children()["$[]"](1))):nil}).$$s=this,$$2.$$arity=1,$$2))},$HashNode_initialize$1.$$arity=-1),Opal.def($HashNode_compile_hash2$11,"$simple_keys?",$HashNode_compile_hash$9=function(){var $$4;return $send(this.$keys(),"all?",[],(($$4=function(key){null==$$4.$$s||$$4.$$s;return null==key&&(key=nil),["sym","str"]["$include?"](key.$type())}).$$s=this,$$4.$$arity=1,$$4))},$HashNode_compile_hash$9.$$arity=0),Opal.def($HashNode_compile_hash2$11,"$compile",$HashNode_compile_hash$9=function(){return $truthy(this.$has_kwsplat())?this.$compile_merge():$truthy(this["$simple_keys?"]())?this.$compile_hash2():this.$compile_hash()},$HashNode_compile_hash$9.$$arity=0),Opal.def($HashNode_compile_hash2$11,"$compile_merge",$HashNode_compile_hash$9=function(){var $a,$$7,$$8,result=nil,seq=nil;return this.$helper("hash"),result=($a=[[],[]])[0],seq=$a[1],$send(this.$children(),"each",[],(($$7=function(child){var self=null==$$7.$$s?this:$$7.$$s;return null==child&&(child=nil),child.$type()["$=="]("kwsplat")?($truthy(seq["$empty?"]())||result["$<<"](self.$expr($send(self,"s",["hash"].concat(Opal.to_a(seq))))),result["$<<"](self.$expr(child)),seq=[]):seq["$<<"](child)}).$$s=this,$$7.$$arity=1,$$7)),$truthy(seq["$empty?"]())||result["$<<"](this.$expr($send(this,"s",["hash"].concat(Opal.to_a(seq))))),$send(result,"each_with_index",[],(($$8=function(fragment,idx){var self=null==$$8.$$s?this:$$8.$$s;return null==fragment&&(fragment=nil),null==idx&&(idx=nil),idx["$=="](0)?self.$push(fragment):self.$push(".$merge(",fragment,")")}).$$s=this,$$8.$$arity=2,$$8))},$HashNode_compile_hash$9.$$arity=0),Opal.def($HashNode_compile_hash2$11,"$compile_hash",$HashNode_compile_hash$9=function(){var $$10;return this.$helper("hash"),$send(this.$children(),"each_with_index",[],(($$10=function($a,idx){var key,value,self=null==$$10.$$s?this:$$10.$$s;return null==$a&&($a=nil),null==idx&&(idx=nil),$a=$a.$children(),key=null==($a=Opal.to_ary($a))[0]?nil:$a[0],value=null==$a[1]?nil:$a[1],idx["$=="](0)||self.$push(", "),self.$push(self.$expr(key),", ",self.$expr(value))}).$$s=this,$$10.$$arity=2,$$10)),this.$wrap("$hash(",")")},$HashNode_compile_hash$9.$$arity=0),Opal.def($HashNode_compile_hash2$11,"$compile_hash2",$HashNode_compile_hash2$11=function(){var $$12,$$13,hash_obj=nil,hash_keys=nil,$a=[$hash2([],{}),[]],hash_obj=$a[0],hash_keys=$a[1];return this.$helper("hash2"),$send(this.$keys().$size(),"times",[],(($$12=function(rhs){var key,self=null==$$12.$$s?this:$$12.$$s,lhs=nil;return null==rhs&&(rhs=nil),key=self.$keys()["$[]"](rhs).$children()["$[]"](0).$to_s().$inspect(),$truthy(hash_obj["$include?"](key))||hash_keys["$<<"](key),lhs=[key,self.$expr(self.$values()["$[]"](rhs))],$send(hash_obj,"[]=",Opal.to_a(lhs)),lhs[rhs=1,"number"==typeof(lhs=lhs.length)&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)]}).$$s=this,$$12.$$arity=1,$$12)),$send(hash_keys,"each_with_index",[],(($$13=function(key,idx){var self=null==$$13.$$s?this:$$13.$$s;return null==key&&(key=nil),null==idx&&(idx=nil),idx["$=="](0)||self.$push(", "),self.$push(key+": "),self.$push(hash_obj["$[]"](key))}).$$s=this,$$13.$$arity=2,$$13)),this.$wrap("$hash2(["+hash_keys.$join(", ")+"], {","})")},$HashNode_compile_hash2$11.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$KwSplatNode_compile$14,$parent_nesting){$KwSplatNode_compile$14=$klass($base,$KwSplatNode_compile$14,"KwSplatNode"),[$KwSplatNode_compile$14].concat($parent_nesting);return $KwSplatNode_compile$14.$handle("kwsplat"),$KwSplatNode_compile$14.$children("value"),Opal.def($KwSplatNode_compile$14,"$compile",$KwSplatNode_compile$14=function(){return this.$push("Opal.to_hash(",this.$expr(this.$value()),")")},$KwSplatNode_compile$14.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/array"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send;return Opal.add_stubs(["$require","$handle","$empty?","$children","$push","$each","$==","$type","$expr","$<<","$fragment"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$ArrayNode_compile$1,$parent_nesting){$ArrayNode_compile$1=$klass($base,$ArrayNode_compile$1,"ArrayNode"),[$ArrayNode_compile$1].concat($parent_nesting);return $ArrayNode_compile$1.$handle("array"),Opal.def($ArrayNode_compile$1,"$compile",$ArrayNode_compile$1=function(){var $a,$$2,join,code=nil,work=nil;return $truthy(this.$children()["$empty?"]())?this.$push("[]"):(code=($a=[[],[]])[0],work=$a[1],$send(this.$children(),"each",[],(($$2=function(child){var splat,part,self=null==$$2.$$s?this:$$2.$$s;return null==child&&(child=nil),splat=child.$type()["$=="]("splat"),part=self.$expr(child),$truthy(splat)?($truthy(work["$empty?"]())?($truthy(code["$empty?"]())?code["$<<"](self.$fragment("[].concat(")):code["$<<"](self.$fragment(".concat(")))["$<<"](part)["$<<"](self.$fragment(")")):($truthy(code["$empty?"]())?code["$<<"](self.$fragment("["))["$<<"](work)["$<<"](self.$fragment("]")):code["$<<"](self.$fragment(".concat(["))["$<<"](work)["$<<"](self.$fragment("])")),code["$<<"](self.$fragment(".concat("))["$<<"](part)["$<<"](self.$fragment(")"))),work=[]):($truthy(work["$empty?"]())||work["$<<"](self.$fragment(", ")),work["$<<"](part))}).$$s=this,$$2.$$arity=1,$$2)),$truthy(work["$empty?"]())||(join=[this.$fragment("["),work,this.$fragment("]")],$truthy(code["$empty?"]())?code=join:code.$push([this.$fragment(".concat("),join,this.$fragment(")")])),this.$push(code))},$ArrayNode_compile$1.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/defined"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$slice=Opal.slice,$send=Opal.send,$range=Opal.range;return Opal.add_stubs(["$require","$handle","$children","$type","$value","$===","$push","$inspect","$to_s","$==","$size","$[]","$compile_defined_send","$wrap","$compile_defined_ivar","$compile_defined_super","$compile_defined_yield","$compile_defined_xstr","$compile_defined_const","$compile_defined_cvar","$compile_defined_gvar","$compile_defined_back_ref","$compile_defined_nth_ref","$compile_defined_array","$respond_to?","$__send__","$new_temp","$scope","$expr","$wrap_with_try_catch","$mid_to_jsid","$compile_defined","$compile_send_recv_doesnt_raise","$each","$s","$uses_block!","$block_name","$find_parent_def","$nil?","$class_variable_owner","$helper","$include?","$each_with_index"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$DefinedNode_compile_defined_array$16,$DefinedNode_compile_defined_nth_ref$15){$DefinedNode_compile_defined_array$16=$klass($base,$DefinedNode_compile_defined_array$16,"DefinedNode"),[$DefinedNode_compile_defined_array$16].concat($DefinedNode_compile_defined_nth_ref$15);return $DefinedNode_compile_defined_array$16.$handle("defined?"),$DefinedNode_compile_defined_array$16.$children("value"),Opal.def($DefinedNode_compile_defined_array$16,"$compile",$DefinedNode_compile_defined_nth_ref$15=function(){var self=this,$case=nil,$ret_or_1=nil;return $case=self.$value().$type(),"self"["$==="]($case)||"nil"["$==="]($case)||"false"["$==="]($case)||"true"["$==="]($case)?self.$push(self.$value().$type().$to_s().$inspect()):"lvasgn"["$==="]($case)||"ivasgn"["$==="]($case)||"gvasgn"["$==="]($case)||"cvasgn"["$==="]($case)||"casgn"["$==="]($case)||"op_asgn"["$==="]($case)||"or_asgn"["$==="]($case)||"and_asgn"["$==="]($case)?self.$push("'assignment'"):"lvar"["$==="]($case)?self.$push("'local-variable'"):"begin"["$==="]($case)?$truthy($truthy($ret_or_1=self.$value().$children().$size()["$=="](1))?self.$value().$children()["$[]"](0).$type()["$=="]("masgn"):$ret_or_1)?self.$push("'assignment'"):self.$push("'expression'"):"send"["$==="]($case)?(self.$compile_defined_send(self.$value()),self.$wrap("("," ? 'method' : nil)")):"ivar"["$==="]($case)?(self.$compile_defined_ivar(self.$value()),self.$wrap("("," ? 'instance-variable' : nil)")):"zsuper"["$==="]($case)||"super"["$==="]($case)?self.$compile_defined_super():"yield"["$==="]($case)?(self.$compile_defined_yield(),self.$wrap("("," ? 'yield' : nil)")):"xstr"["$==="]($case)?self.$compile_defined_xstr(self.$value()):"const"["$==="]($case)?(self.$compile_defined_const(self.$value()),self.$wrap("("," ? 'constant' : nil)")):"cvar"["$==="]($case)?(self.$compile_defined_cvar(self.$value()),self.$wrap("("," ? 'class variable' : nil)")):"gvar"["$==="]($case)?(self.$compile_defined_gvar(self.$value()),self.$wrap("("," ? 'global-variable' : nil)")):"back_ref"["$==="]($case)?(self.$compile_defined_back_ref(),self.$wrap("("," ? 'global-variable' : nil)")):"nth_ref"["$==="]($case)?(self.$compile_defined_nth_ref(),self.$wrap("("," ? 'global-variable' : nil)")):"array"["$==="]($case)?(self.$compile_defined_array(self.$value()),self.$wrap("("," ? 'expression' : nil)")):self.$push("'expression'")},$DefinedNode_compile_defined_nth_ref$15.$$arity=0),Opal.def($DefinedNode_compile_defined_array$16,"$compile_defined",$DefinedNode_compile_defined_nth_ref$15=function(node){var node_tmp,type=node.$type();return $truthy(this["$respond_to?"]("compile_defined_"+type))?this.$__send__("compile_defined_"+type,node):(node_tmp=this.$scope().$new_temp(),this.$push("("+node_tmp+" = ",this.$expr(node),")"),node_tmp)},$DefinedNode_compile_defined_nth_ref$15.$$arity=1),Opal.def($DefinedNode_compile_defined_array$16,"$wrap_with_try_catch",$DefinedNode_compile_defined_nth_ref$15=function(code){var returning_tmp=this.$scope().$new_temp();return this.$push("("+returning_tmp+" = (function() { try {"),this.$push("  return "+code+";"),this.$push("} catch ($err) {"),this.$push("  if (Opal.rescue($err, [Opal.Exception])) {"),this.$push("    try {"),this.$push("      return false;"),this.$push("    } finally { Opal.pop_exception() }"),this.$push("  } else { throw $err; }"),this.$push("}})())"),returning_tmp},$DefinedNode_compile_defined_nth_ref$15.$$arity=1),Opal.def($DefinedNode_compile_defined_array$16,"$compile_send_recv_doesnt_raise",$DefinedNode_compile_defined_nth_ref$15=function(recv_code){return this.$wrap_with_try_catch(recv_code)},$DefinedNode_compile_defined_nth_ref$15.$$arity=1),Opal.def($DefinedNode_compile_defined_array$16,"$compile_defined_send",$DefinedNode_compile_defined_nth_ref$15=function($a){var $$6,recv_value_tmp,meth_tmp,recv=nil,method_name=nil,recv_code=nil,recv_tmp=nil,$a=[].concat(Opal.to_a($a)),recv=null==$a[0]?nil:$a[0],method_name=null==$a[1]?nil:$a[1],args=$slice.call($a,2),mid=this.$mid_to_jsid(method_name.$to_s());return $truthy(recv)?(recv_code=this.$compile_defined(recv),this.$push(" && "),recv.$type()["$=="]("send")&&(recv_code=this.$compile_send_recv_doesnt_raise(recv_code),this.$push(" && ")),recv_tmp=this.$scope().$new_temp(),this.$push("("+recv_tmp+" = ",recv_code,", "+recv_tmp+") && ")):recv_tmp="self",recv_value_tmp=this.$scope().$new_temp(),this.$push("("+recv_value_tmp+" = "+recv_tmp+") && "),meth_tmp=this.$scope().$new_temp(),this.$push("((("+meth_tmp+" = "+recv_value_tmp+mid+") && !"+meth_tmp+".$$stub)"),this.$push(" || "+recv_value_tmp+"['$respond_to_missing?']('"+method_name+"'))"),$send(args,"each",[],(($$6=function(arg){var self=null==$$6.$$s?this:$$6.$$s,$case=nil;return null==arg&&(arg=nil),$case=arg.$type(),"block_pass"["$==="]($case)?nil:(self.$push(" && "),self.$compile_defined(arg))}).$$s=this,$$6.$$arity=1,$$6)),this.$wrap("(",")"),meth_tmp+"()"},$DefinedNode_compile_defined_nth_ref$15.$$arity=1),Opal.def($DefinedNode_compile_defined_array$16,"$compile_defined_ivar",$DefinedNode_compile_defined_nth_ref$15=function(node){var name=node.$children()["$[]"](0).$to_s()["$[]"]($range(1,-1,!1)),tmp=this.$scope().$new_temp();return this.$push("("+tmp+" = self['"+name+"'], "+tmp+" != null && "+tmp+" !== nil)"),tmp},$DefinedNode_compile_defined_nth_ref$15.$$arity=1),Opal.def($DefinedNode_compile_defined_array$16,"$compile_defined_super",$DefinedNode_compile_defined_nth_ref$15=function(){return this.$push(this.$expr(this.$s("defined_super")))},$DefinedNode_compile_defined_nth_ref$15.$$arity=0),Opal.def($DefinedNode_compile_defined_array$16,"$compile_defined_yield",$DefinedNode_compile_defined_nth_ref$15=function(){var block_name,self=this,$ret_or_2=nil;return self.$scope()["$uses_block!"](),block_name=$truthy($ret_or_2=self.$scope().$block_name())?$ret_or_2:self.$scope().$find_parent_def().$block_name(),self.$push("("+block_name+" != null && "+block_name+" !== nil)"),block_name},$DefinedNode_compile_defined_nth_ref$15.$$arity=0),Opal.def($DefinedNode_compile_defined_array$16,"$compile_defined_xstr",$DefinedNode_compile_defined_nth_ref$15=function(node){return this.$push("(typeof(",this.$expr(node),') !== "undefined")')},$DefinedNode_compile_defined_nth_ref$15.$$arity=1),Opal.def($DefinedNode_compile_defined_array$16,"$compile_defined_const",$DefinedNode_compile_defined_nth_ref$15=function($a){var const_scope_tmp,const_scope=nil,$a=[].concat(Opal.to_a($a)),const_scope=null==$a[0]?nil:$a[0],const_name=null==$a[1]?nil:$a[1],const_tmp=this.$scope().$new_temp();return $truthy(const_scope["$nil?"]())?this.$push("("+const_tmp+" = $$($nesting, '"+const_name+"', 'skip_raise'))"):const_scope["$=="](this.$s("cbase"))?this.$push("("+const_tmp+" = $$$('::', '"+const_name+"', 'skip_raise'))"):(const_scope_tmp=this.$compile_defined(const_scope),this.$push(" && ("+const_tmp+" = $$$("+const_scope_tmp+", '"+const_name+"', 'skip_raise'))")),const_tmp},$DefinedNode_compile_defined_nth_ref$15.$$arity=1),Opal.def($DefinedNode_compile_defined_array$16,"$compile_defined_cvar",$DefinedNode_compile_defined_nth_ref$15=function($a){var $a=[].concat(Opal.to_a($a)),cvar_name=null==$a[0]?nil:$a[0],cvar_tmp=(null==$a[1]||$a[1],this.$scope().$new_temp());return this.$push("("+cvar_tmp+" = "+this.$class_variable_owner()+".$$cvars['"+cvar_name+"'], "+cvar_tmp+" != null)"),cvar_tmp},$DefinedNode_compile_defined_nth_ref$15.$$arity=1),Opal.def($DefinedNode_compile_defined_array$16,"$compile_defined_gvar",$DefinedNode_compile_defined_nth_ref$15=function(node){var gvar_temp,name=nil;return this.$helper("gvars"),name=node.$children()["$[]"](0).$to_s()["$[]"]($range(1,-1,!1)),gvar_temp=this.$scope().$new_temp(),$truthy(["~","!"]["$include?"](name))?this.$push("("+gvar_temp+" = ",this.$expr(node)," || true)"):this.$push("("+gvar_temp+" = $gvars["+name.$inspect()+"], "+gvar_temp+" != null)"),gvar_temp},$DefinedNode_compile_defined_nth_ref$15.$$arity=1),Opal.def($DefinedNode_compile_defined_array$16,"$compile_defined_back_ref",$DefinedNode_compile_defined_nth_ref$15=function(){var back_ref_temp;return this.$helper("gvars"),back_ref_temp=this.$scope().$new_temp(),this.$push("("+back_ref_temp+" = $gvars['~'], "+back_ref_temp+" != null && "+back_ref_temp+" !== nil)"),back_ref_temp},$DefinedNode_compile_defined_nth_ref$15.$$arity=0),Opal.def($DefinedNode_compile_defined_array$16,"$compile_defined_nth_ref",$DefinedNode_compile_defined_nth_ref$15=function(){var nth_ref_tmp;return this.$helper("gvars"),nth_ref_tmp=this.$scope().$new_temp(),this.$push("("+nth_ref_tmp+" = $gvars['~'], "+nth_ref_tmp+" != null && "+nth_ref_tmp+" != nil)"),nth_ref_tmp},$DefinedNode_compile_defined_nth_ref$15.$$arity=0),Opal.def($DefinedNode_compile_defined_array$16,"$compile_defined_array",$DefinedNode_compile_defined_array$16=function(node){var $$17;return $send(node.$children(),"each_with_index",[],(($$17=function(child,idx){var self=null==$$17.$$s?this:$$17.$$s;return null==child&&(child=nil),null==idx&&(idx=nil),idx["$=="](0)||self.$push(" && "),self.$compile_defined(child)}).$$s=this,$$17.$$arity=2,$$17))},$DefinedNode_compile_defined_array$16.$$arity=1),nil&&"compile_defined_array"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/masgn"]=function(Opal){function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send;return Opal.add_stubs(["$require","$freeze","$handle","$children","$new_temp","$scope","$==","$type","$rhs","$push","$expr","$any?","$size","$compile_masgn","$lhs","$queue_temp","$take_while","$!=","$drop","$each_with_index","$compile_assignment","$empty?","$shift","$[]","$helper","$<<","$dup","$s","$!","$>=","$updated","$include?","$+","$last","$raise"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$MassAssignNode_compile_assignment$7,$MassAssignNode_compile_masgn$3){var $MassAssignNode_compile_assignment$7=$klass($base,$MassAssignNode_compile_assignment$7,"MassAssignNode"),$nesting=[$MassAssignNode_compile_assignment$7].concat($MassAssignNode_compile_masgn$3);return Opal.const_set($nesting[0],"SIMPLE_ASSIGNMENT",["lvasgn","ivasgn","lvar","gvasgn","cdecl","casgn"].$freeze()),$MassAssignNode_compile_assignment$7.$handle("masgn"),$MassAssignNode_compile_assignment$7.$children("lhs","rhs"),Opal.def($MassAssignNode_compile_assignment$7,"$compile",$MassAssignNode_compile_masgn$3=function(){var $$2,rhs_len,self=this,retval=nil,array=self.$scope().$new_temp();return self.$rhs().$type()["$=="]("array")?(self.$push(array+" = ",self.$expr(self.$rhs())),rhs_len=$truthy($send(self.$rhs().$children(),"any?",[],(($$2=function(c){null==$$2.$$s||$$2.$$s;return null==c&&(c=nil),c.$type()["$=="]("splat")}).$$s=self,$$2.$$arity=1,$$2)))?nil:self.$rhs().$children().$size(),self.$compile_masgn(self.$lhs().$children(),array,rhs_len),self.$push(", "+array)):(self.$rhs().$type()["$=="]("begin"),retval=self.$scope().$new_temp(),self.$push(retval+" = ",self.$expr(self.$rhs())),self.$push(", "+array+" = Opal.to_ary("+retval+")"),self.$compile_masgn(self.$lhs().$children(),array),self.$push(", "+retval),self.$scope().$queue_temp(retval)),self.$scope().$queue_temp(array)},$MassAssignNode_compile_masgn$3.$$arity=0),Opal.def($MassAssignNode_compile_assignment$7,"$compile_masgn",$MassAssignNode_compile_masgn$3=function(lhs_items,array,len){var $$4,$$5,$$6,tmp,pre_splat=nil,post_splat=nil,splat=nil,part=nil;return null==len&&(len=nil),pre_splat=$send(lhs_items,"take_while",[],(($$4=function(child){null==$$4.$$s||$$4.$$s;return null==child&&(child=nil),child.$type()["$!="]("splat")}).$$s=this,$$4.$$arity=1,$$4)),post_splat=lhs_items.$drop(pre_splat.$size()),$send(pre_splat,"each_with_index",[],(($$5=function(child,idx){var self=null==$$5.$$s?this:$$5.$$s;return null==child&&(child=nil),null==idx&&(idx=nil),self.$compile_assignment(child,array,idx,len)}).$$s=this,$$5.$$arity=2,$$5)),$truthy(post_splat["$empty?"]())?nil:(splat=post_splat.$shift(),$truthy(post_splat["$empty?"]())?$truthy(part=splat.$children()["$[]"](0))?(this.$helper("slice"),part=part.$dup()["$<<"](this.$s("js_tmp","$slice.call("+array+", "+pre_splat.$size()+")")),this.$push(", "),this.$push(this.$expr(part))):nil:(tmp=this.$scope().$new_temp(),this.$push(", "+tmp+" = "+array+".length - "+post_splat.$size()),this.$push(", "+tmp+" = ("+tmp+" < "+pre_splat.$size()+") ? "+pre_splat.$size()+" : "+tmp),$truthy(part=splat.$children()["$[]"](0))&&(this.$helper("slice"),part=part.$dup()["$<<"](this.$s("js_tmp","$slice.call("+array+", "+pre_splat.$size()+", "+tmp+")")),this.$push(", "),this.$push(this.$expr(part))),$send(post_splat,"each_with_index",[],(($$6=function(child,idx){var self=null==$$6.$$s?this:$$6.$$s;return null==child&&(child=nil),null==idx&&(idx=nil),idx["$=="](0)?self.$compile_assignment(child,array,tmp):self.$compile_assignment(child,array,tmp+" + "+idx)}).$$s=this,$$6.$$arity=2,$$6)),this.$scope().$queue_temp(tmp)))},$MassAssignNode_compile_masgn$3.$$arity=-3),Opal.def($MassAssignNode_compile_assignment$7,"$compile_assignment",$MassAssignNode_compile_assignment$7=function(child,array,idx,lhs){var tmp,self=this,assign=nil,rhs=nil,part=nil;if(null==lhs&&(lhs=nil),assign=$truthy($truthy(rhs=lhs["$!"]())?rhs:(rhs=lhs,"number"==typeof(lhs=idx)&&"number"==typeof rhs?rhs<=lhs:lhs["$>="](rhs)))?self.$s("js_tmp","("+array+"["+idx+"] == null ? nil : "+array+"["+idx+"])"):self.$s("js_tmp",array+"["+idx+"]"),part=child.$updated(),$truthy($$($nesting,"SIMPLE_ASSIGNMENT")["$include?"](child.$type())))part=part.$updated(nil,$rb_plus(part.$children(),[assign]));else if(child.$type()["$=="]("send"))part=part.$updated(nil,$rb_plus(part.$children(),[assign]));else if(child.$type()["$=="]("attrasgn"))part.$last()["$<<"](assign);else{if(child.$type()["$=="]("mlhs"))return tmp=self.$scope().$new_temp(),self.$push(", ("+tmp+" = Opal.to_ary("+assign.$children()["$[]"](0)+")"),self.$compile_masgn(child.$children(),tmp),self.$push(")"),self.$scope().$queue_temp(tmp),nil;self.$raise("Bad child node in masgn LHS: "+child+". LHS: "+self.$lhs())}return self.$push(", "),self.$push(self.$expr(part))},$MassAssignNode_compile_assignment$7.$$arity=-4),nil&&"compile_assignment"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/arglist"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send=Opal.send,$truthy=Opal.truthy;return Opal.add_stubs(["$require","$handle","$each","$children","$==","$type","$expr","$empty?","$<<","$fragment","$push"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$ArglistNode_compile$1,$parent_nesting){$ArglistNode_compile$1=$klass($base,$ArglistNode_compile$1,"ArglistNode"),[$ArglistNode_compile$1].concat($parent_nesting);return $ArglistNode_compile$1.$handle("arglist"),Opal.def($ArglistNode_compile$1,"$compile",$ArglistNode_compile$1=function(){var $$2,join,code=nil,work=nil,$a=[[],[]],code=$a[0],work=$a[1];return $send(this.$children(),"each",[],(($$2=function(current){var splat,arg,self=null==$$2.$$s?this:$$2.$$s;return null==current&&(current=nil),splat=current.$type()["$=="]("splat"),arg=self.$expr(current),$truthy(splat)?($truthy(work["$empty?"]())?$truthy(code["$empty?"]())?code["$<<"](arg):code["$<<"](self.$fragment(".concat("))["$<<"](arg)["$<<"](self.$fragment(")")):($truthy(code["$empty?"]())?code["$<<"](self.$fragment("["))["$<<"](work)["$<<"](self.$fragment("]")):code["$<<"](self.$fragment(".concat(["))["$<<"](work)["$<<"](self.$fragment("])")),code["$<<"](self.$fragment(".concat("))["$<<"](arg)["$<<"](self.$fragment(")"))),work=[]):($truthy(work["$empty?"]())||work["$<<"](self.$fragment(", ")),work["$<<"](arg))}).$$s=this,$$2.$$arity=1,$$2)),$truthy(work["$empty?"]())||(join=work,$truthy(code["$empty?"]())?code=join:code["$<<"](this.$fragment(".concat(["))["$<<"](join)["$<<"](this.$fragment("])"))),$send(this,"push",Opal.to_a(code))},$ArglistNode_compile$1.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/x_string"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send,$range=Opal.range,$lambda=Opal.lambda;return Opal.add_stubs(["$handle","$unpack_return","$children","$strip_empty_children","$single_line?","$compile_single_line","$each","$compile_child","$recv?","$wrap","$push","$private","$type","$===","$source","$expression","$loc","$new","$scope","$expr","$raise","$shift","$empty?","$s","$==","$strip","$=~","$!","$pop","$extract_last_value","$rstrip","$expr?","$end_with?","$warning","$compiler","$line","$[]","$size","$none?","$first","$dup","$nil?","$any?","$last"]),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$XStringNode_strip_empty_children$10,$XStringNode_unpack_return$9){var $XStringNode_strip_empty_children$10=$klass($base,$XStringNode_strip_empty_children$10,"XStringNode"),$nesting=[$XStringNode_strip_empty_children$10].concat($XStringNode_unpack_return$9);return 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$nesting=[],nil=Opal.nil,$module=(Opal.$$$,Opal.$$,Opal.module),$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send,$range=Opal.range;return Opal.add_stubs(["$empty?","$[]","$last_token_position","$drop_while","$lines","$==","$join","$private","$last","$end_pos"]),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($EofContent_last_token_position$4,$EofContent_eof$2){$EofContent_last_token_position$4=$klass($EofContent_last_token_position$4,null,"EofContent"),$EofContent_eof$2=[$EofContent_last_token_position$4].concat($EofContent_eof$2);return $EofContent_last_token_position$4.$$prototype.tokens=$EofContent_last_token_position$4.$$prototype.source=nil,Opal.const_set($EofContent_eof$2[0],"DATA_SEPARATOR","__END__\n"),Opal.def($EofContent_last_token_position$4,"$initialize",$EofContent_eof$2=function(tokens,source){return 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$b=null==$a[1]?nil:$a[1],null==($a=Opal.to_ary($b))[0]||$a[0],(null==$a[1]?nil:$a[1]).$end_pos()},$EofContent_last_token_position$4.$$arity=0),nil&&"last_token_position"}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/errors"]=function(Opal){function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}Opal.top;var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$truthy=Opal.truthy,$send=Opal.send,$alias=Opal.alias;return 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$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$hash2=Opal.hash2,$truthy=Opal.truthy,$send=Opal.send;return Opal.add_stubs(["$freeze","$line","$loc","$take","$each","$>=","$any?","$scan","$text","$to_sym","$===","$[]=","$-"]),function($MagicComments_parse$1,$parent_nesting){var $MagicComments_parse$1=$module($MagicComments_parse$1,"MagicComments"),$nesting=[$MagicComments_parse$1].concat($parent_nesting);return Opal.const_set($nesting[0],"MAGIC_COMMENT_RE",/^# *(\w+) *: *(\S+.*?) *$/.$freeze()),Opal.const_set($nesting[0],"EMACS_MAGIC_COMMENT_RE",/^# *-\*- *(\w+) *: *(\S+.*?) *-\*- *$/.$freeze()),Opal.defs($MagicComments_parse$1,"$parse",$MagicComments_parse$1=function(sexp,comments){var $$2,first_line=nil,flags=$hash2([],{});return $truthy(sexp)&&(first_line=sexp.$loc().$line(),comments=comments.$take(first_line)),$send(comments,"each",[],(($$2=function(comment){var $$3,$ret_or_1,lhs,rhs,self=null==$$2.$$s?this:$$2.$$s,$ret_or_2=nil,parts=nil;return 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null==options&&(options=$hash2([],{})),this.source=source,this.indent="",this.unique=0,this.options=options,this.comments=$$($nesting,"Hash").$new([]),this.case_stmt=nil,this.option_values=$hash2([],{}),this.magic_comments=$hash2([],{})},$Compiler_marshal_dump$36.$$arity=-2),Opal.def($Compiler_marshal_load$37,"$compile",$Compiler_marshal_dump$36=function(){var $$8;return this.$parse(),this.fragments=$send(this,"re_raise_with_location",[],(($$8=function(){var self=null==$$8.$$s?this:$$8.$$s;return null==self.sexp&&(self.sexp=nil),self.$process(self.sexp).$flatten()}).$$s=this,$$8.$$arity=0,$$8)),$truthy(this.fragments.$last().$code()["$end_with?"]("\n"))||this.fragments["$<<"](this.$fragment("\n",nil,this.$s("newline"))),this.result=$send(this.fragments,"map",[],"code".$to_proc()).$join("")},$Compiler_marshal_dump$36.$$arity=0),Opal.def($Compiler_marshal_load$37,"$parse",$Compiler_marshal_dump$36=function(){var $$10,$a,sexp,comments,tokens,self=this,$ret_or_3=nil;return 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$$13,$ret_or_5,self=this;return self.helpers=$truthy($ret_or_5=self.helpers)?$ret_or_5:$$($nesting,"Set").$new($send(self.$magic_comments()["$[]"]("helpers").$to_s().$split(","),"map",[],(($$13=function(h){null==$$13.$$s||$$13.$$s;return null==h&&(h=nil),h.$strip().$to_sym()}).$$s=self,$$13.$$arity=1,$$13)))},$Compiler_marshal_dump$36.$$arity=0),Opal.def($Compiler_marshal_load$37,"$operator_helpers",$Compiler_marshal_dump$36=function(){var self=this,$ret_or_6=nil;return self.operator_helpers=$truthy($ret_or_6=self.operator_helpers)?$ret_or_6:$$($nesting,"Set").$new()},$Compiler_marshal_dump$36.$$arity=0),Opal.def($Compiler_marshal_load$37,"$method_calls",$Compiler_marshal_dump$36=function(){var self=this,$ret_or_7=nil;return self.method_calls=$truthy($ret_or_7=self.method_calls)?$ret_or_7:$$($nesting,"Set").$new()},$Compiler_marshal_dump$36.$$arity=0),Opal.def($Compiler_marshal_load$37,"$error",$Compiler_marshal_dump$36=function(msg,line){var error,$writer;return null==line&&(line=nil),error=$$$($$$("::","Opal"),"SyntaxError").$new(msg),$writer=[$$$($$($nesting,"Opal"),"OpalBacktraceLocation").$new(this.$file(),line)],$send(error,"location=",Opal.to_a($writer)),$rb_minus($writer.length,1),this.$raise(error)},$Compiler_marshal_dump$36.$$arity=-2),Opal.def($Compiler_marshal_load$37,"$re_raise_with_location",$Compiler_re_raise_with_location$17=function(){var $writer,$iter=$Compiler_re_raise_with_location$17.$$p,$yield=$iter||nil,error=nil,opal_location=nil,new_error=nil;$iter&&($Compiler_re_raise_with_location$17.$$p=null);try{return Opal.yieldX($yield,[])}catch($err){if(!Opal.rescue($err,[$$($nesting,"StandardError"),$$$($$$("::","Opal"),"SyntaxError")]))throw $err;error=$err;try{return 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old,$iter=$Compiler_in_case$27.$$p,$yield=$iter||nil;return $iter&&($Compiler_in_case$27.$$p=null),$yield===nil?nil:(old=this.case_stmt,this.case_stmt=$hash2([],{}),Opal.yieldX($yield,[]),this.case_stmt=old)},$Compiler_in_case$27.$$arity=0),Opal.def($Compiler_marshal_load$37,"$in_while?",$Compiler_marshal_dump$36=function(){return this.scope["$in_while?"]()},$Compiler_marshal_dump$36.$$arity=0),Opal.def($Compiler_marshal_load$37,"$process",$Compiler_marshal_dump$36=function(sexp,level){var handler=nil;return null==level&&(level="expr"),$truthy(sexp["$nil?"]())?this.$fragment("",this.$scope()):$truthy(handler=this.$handlers()["$[]"](sexp.$type()))?handler.$new(sexp,level,this).$compile_to_fragments():this.$error("Unsupported sexp: "+sexp.$type())},$Compiler_marshal_dump$36.$$arity=-2),Opal.def($Compiler_marshal_load$37,"$handlers",$Compiler_marshal_dump$36=function(){var self=this,$ret_or_10=nil;return self.handlers=$truthy($ret_or_10=self.handlers)?$ret_or_10:$$$($$$($$($nesting,"Opal"),"Nodes"),"Base").$handlers()},$Compiler_marshal_dump$36.$$arity=0),Opal.def($Compiler_marshal_load$37,"$requires",$Compiler_marshal_dump$36=function(){var self=this,$ret_or_11=nil;return self.requires=$truthy($ret_or_11=self.requires)?$ret_or_11:[]},$Compiler_marshal_dump$36.$$arity=0),Opal.def($Compiler_marshal_load$37,"$required_trees",$Compiler_marshal_dump$36=function(){var self=this,$ret_or_12=nil;return self.required_trees=$truthy($ret_or_12=self.required_trees)?$ret_or_12:[]},$Compiler_marshal_dump$36.$$arity=0),Opal.def($Compiler_marshal_load$37,"$returns",$Compiler_marshal_dump$36=function(sexp){var $a,$b,$$34,$case,when_sexp,then_sexp,body_sexp,resbodies,klass,lvar,body,rescue_sexp,ensure_body,rest,last,cond,true_body,false_body,self=this,else_sexp=nil;return $truthy(sexp)?($case=sexp.$type(),"undef"["$==="]($case)?self.$returns(self.$s("begin",sexp,self.$s("nil"))):"break"["$==="]($case)||"next"["$==="]($case)||"redo"["$==="]($case)||"retry"["$==="]($case)?sexp:"yield"["$==="]($case)?sexp.$updated("returnable_yield",nil):"when"["$==="]($case)?($a=[].concat(Opal.to_a(sexp)),$b=($b=$a.length-1)<0?0:$b,when_sexp=$slice.call($a,0,$b),then_sexp=null==$a[$b]?nil:$a[$b],sexp.$updated(nil,[].concat(Opal.to_a(when_sexp)).concat([self.$returns(then_sexp)]))):"rescue"["$==="]($case)?($a=[].concat(Opal.to_a(sexp)),body_sexp=null==$a[0]?nil:$a[0],$b=($b=$a.length-1)<1?1:$b,resbodies=$slice.call($a,1,$b),else_sexp=null==$a[$b]?nil:$a[$b],resbodies=$send(resbodies,"map",[],(($$34=function(resbody){var self=null==$$34.$$s?this:$$34.$$s;return 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self=this,$ret_or_13=nil,scope=nil;return self.scope["$uses_block!"](),$truthy(self.scope.$block_name())?self.$fragment("("+self.scope.$block_name()+" !== nil)",self.$scope(),sexp):$truthy($truthy($ret_or_13=scope=self.scope.$find_parent_def())?scope.$block_name():$ret_or_13)?self.$fragment("("+scope.$block_name()+" !== nil)",scope,sexp):self.$fragment("false",scope,sexp)},$Compiler_marshal_dump$36.$$arity=1),Opal.def($Compiler_marshal_load$37,"$marshal_dump",$Compiler_marshal_dump$36=function(){var self=this,$ret_or_14=nil;return[self.options,self.option_values,self.source_map=$truthy($ret_or_14=self.source_map)?$ret_or_14:self.$source_map().$cache(),self.magic_comments,self.result,self.required_trees,self.requires]},$Compiler_marshal_dump$36.$$arity=0),Opal.def($Compiler_marshal_load$37,"$marshal_load",$Compiler_marshal_load$37=function($a){var $b=$a,$a=Opal.to_ary($b);return this.options=null==$a[0]?nil:$a[0],this.option_values=null==$a[1]?nil:$a[1],this.source_map=null==$a[2]?nil:$a[2],this.magic_comments=null==$a[3]?nil:$a[3],this.result=null==$a[4]?nil:$a[4],this.required_trees=null==$a[5]?nil:$a[5],this.requires=null==$a[6]?nil:$a[6],$b},$Compiler_marshal_load$37.$$arity=1),nil&&"marshal_load"}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/erb"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send;return Opal.add_stubs(["$require","$compile","$new","$freeze","$fix_quotes","$find_contents","$find_code","$wrap_compiled","$require_erb","$prepared_source","$gsub","$+","$last_match","$=~","$sub"]),self.$require("opal/compiler"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($ERB_compile$1,$parent_nesting){var $ERB_compile$1=$module($ERB_compile$1,"ERB"),$nesting=[$ERB_compile$1].concat($parent_nesting);return Opal.defs($ERB_compile$1,"$compile",$ERB_compile$1=function(source,file_name){return null==file_name&&(file_name="(erb)"),$$($nesting,"Compiler").$new(source,file_name).$compile()},$ERB_compile$1.$$arity=-2),function($Compiler_wrap_compiled$11,$Compiler_find_code$9){var $Compiler_wrap_compiled$11=$klass($Compiler_wrap_compiled$11,null,"Compiler"),$nesting=[$Compiler_wrap_compiled$11].concat($Compiler_find_code$9);return $Compiler_wrap_compiled$11.$$prototype.prepared_source=$Compiler_wrap_compiled$11.$$prototype.source=$Compiler_wrap_compiled$11.$$prototype.file_name=nil,Opal.const_set($nesting[0],"BLOCK_EXPR",/\s+(do|\{)(\s*\|[^|]*\|)?\s*\Z/.$freeze()),Opal.def($Compiler_wrap_compiled$11,"$initialize",$Compiler_find_code$9=function($a,file_name){return null==file_name&&(file_name="(erb)"),$a=[$a,file_name,$a],this.source=$a[0],this.file_name=$a[1],this.result=$a[2],$a},$Compiler_find_code$9.$$arity=-2),Opal.def($Compiler_wrap_compiled$11,"$prepared_source",$Compiler_find_code$9=function(){var self=this,$ret_or_1=nil,source=nil;return self.prepared_source=$truthy($ret_or_1=self.prepared_source)?$ret_or_1:(source=self.source,source=self.$fix_quotes(source),source=self.$find_contents(source),source=self.$find_code(source),source=self.$wrap_compiled(source),source=self.$require_erb(source))},$Compiler_find_code$9.$$arity=0),Opal.def($Compiler_wrap_compiled$11,"$compile",$Compiler_find_code$9=function(){return $$($nesting,"Opal").$compile(this.$prepared_source())},$Compiler_find_code$9.$$arity=0),Opal.def($Compiler_wrap_compiled$11,"$fix_quotes",$Compiler_find_code$9=function(result){return result.$gsub('"','\\"')},$Compiler_find_code$9.$$arity=1),Opal.def($Compiler_wrap_compiled$11,"$require_erb",$Compiler_find_code$9=function(lhs){var rhs;return rhs=lhs,"number"==typeof(lhs='require "erb";')&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)},$Compiler_find_code$9.$$arity=1),Opal.def($Compiler_wrap_compiled$11,"$find_contents",$Compiler_find_code$9=function(result){var $$8;return $send(result,"gsub",[/<%=([\s\S]+?)%>/],(($$8=function(){null==$$8.$$s||$$8.$$s;var inner=nil,inner=$$($nesting,"Regexp").$last_match(1).$gsub(/\\'/,"'").$gsub(/\\"/,'"');return $truthy(inner["$=~"]($$($nesting,"BLOCK_EXPR")))?'")\noutput_buffer.append= '+inner+'\noutput_buffer.append("':'")\noutput_buffer.append=('+inner+')\noutput_buffer.append("'}).$$s=this,$$8.$$arity=0,$$8))},$Compiler_find_code$9.$$arity=1),Opal.def($Compiler_wrap_compiled$11,"$find_code",$Compiler_find_code$9=function(result){var $$10;return $send(result,"gsub",[/<%([\s\S]+?)%>/],(($$10=function(){null==$$10.$$s||$$10.$$s;return'")\n'+$$($nesting,"Regexp").$last_match(1).$gsub(/\\"/,'"')+'\noutput_buffer.append("'}).$$s=this,$$10.$$arity=0,$$10))},$Compiler_find_code$9.$$arity=1),Opal.def($Compiler_wrap_compiled$11,"$wrap_compiled",$Compiler_wrap_compiled$11=function(result){return"Template.new('"+this.file_name.$sub(Opal.regexp(["\\.opalerb",$$($nesting,"REGEXP_END")]),"")+"') do |output_buffer|\noutput_buffer.append(\""+result+'")\noutput_buffer.join\nend\n'},$Compiler_wrap_compiled$11.$$arity=1),nil&&"wrap_compiled"}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/builder_processors"]=function(Opal){function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$hash2=Opal.hash2,$truthy=Opal.truthy,$send=Opal.send,$send2=Opal.send2,$find_super=Opal.find_super;return Opal.add_stubs(["$require","$end_with?","$+","$dup","$delete","$cache","$attr_reader","$to_s","$source","$join","$==","$size","$new","$register_processor","$is_a?","$match","$match_regexp","$raise","$inspect","$handles","$map","$with_index","$each_line","$index","$filename","$mark_as_required","$result","$compiled","$source_map","$fetch","$cache_key","$compiler_for","$compile","$class","$merge","$requires","$required_trees","$extname","$prepare","$private","$prepared_source","$module_name"]),self.$require("opal/compiler"),self.$require("opal/erb"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"BuilderProcessors")].concat($nesting);return function($Processor_mark_as_required$7,$Processor_to_s$3){var $nesting=[$Processor_mark_as_required$7=$klass($Processor_mark_as_required$7,null,"Processor")].concat($Processor_to_s$3);$Processor_mark_as_required$7.$$prototype.options=nil,Opal.def($Processor_mark_as_required$7,"$initialize",$Processor_to_s$3=function(source,filename,$a){var $$2;return null==$a&&($a=$hash2([],{})),$truthy(source["$end_with?"]("\n"))||(source=$rb_plus(source,"\n")),$a=[source,filename,$a.$dup()],this.source=$a[0],this.filename=$a[1],this.options=$a[2],this.cache=$send(this.options,"delete",["cache"],(($$2=function(){null==$$2.$$s||$$2.$$s;return $$($nesting,"Opal").$cache()}).$$s=this,$$2.$$arity=0,$$2)),this.requires=[],this.required_trees=[]},$Processor_to_s$3.$$arity=-3),$Processor_mark_as_required$7.$attr_reader("source","filename","options","requires","required_trees"),Opal.def($Processor_mark_as_required$7,"$to_s",$Processor_to_s$3=function(){return this.$source().$to_s()},$Processor_to_s$3.$$arity=0),function($match_regexp$6,$match$ques$5){var $nesting=[$match_regexp$6].concat($match$ques$5);$match_regexp$6.$attr_reader("extensions"),Opal.def($match_regexp$6,"$handles",$match$ques$5=function($a){var matches=nil,extensions=Opal.slice.call(arguments,0,arguments.length),matches=(this.extensions=extensions).$join("|");return extensions.$size()["$=="](1)||(matches="("+matches+")"),this.match_regexp=$$($nesting,"Regexp").$new("\\."+matches+$$($nesting,"REGEXP_END")),$$$($$$("::","Opal"),"Builder").$register_processor(this,extensions),nil},$match$ques$5.$$arity=-1),Opal.def($match_regexp$6,"$match?",$match$ques$5=function(other){var $ret_or_1;return $truthy($ret_or_1=other["$is_a?"]($$($nesting,"String")))?other.$match(this.$match_regexp()):$ret_or_1},$match$ques$5.$$arity=1),Opal.def($match_regexp$6,"$match_regexp",$match_regexp$6=function(){var $ret_or_2;return null==this.match_regexp&&(this.match_regexp=nil),$truthy($ret_or_2=this.match_regexp)?$ret_or_2:this.$raise($$($nesting,"NotImplementedError"))},$match_regexp$6.$$arity=0)}(Opal.get_singleton_class($Processor_mark_as_required$7),$nesting),Opal.def($Processor_mark_as_required$7,"$mark_as_required",$Processor_mark_as_required$7=function(filename){return"Opal.loaded(["+filename.$to_s().$inspect()+"]);"},$Processor_mark_as_required$7.$$arity=1)}($nesting[0],$nesting),function($base,$JsProcessor_source$10,$JsProcessor_source_map$8){var $nesting=[$JsProcessor_source$10=$klass($base,$JsProcessor_source$10,"JsProcessor")].concat($JsProcessor_source_map$8);$JsProcessor_source$10.$$prototype.source_map=$JsProcessor_source$10.$$prototype.source=$JsProcessor_source$10.$$prototype.filename=nil,$JsProcessor_source$10.$handles("js"),Opal.const_set($nesting[0],"ManualFragment",$$($nesting,"Struct").$new("line","column","code","source_map_name")),Opal.def($JsProcessor_source$10,"$source_map",$JsProcessor_source_map$8=function(){var $$9,$ret_or_3,manual_fragments,self=this;return self.source_map=$truthy($ret_or_3=self.source_map)?$ret_or_3:(manual_fragments=$send(self.$source().$each_line().$with_index(),"map",[],(($$9=function(line_source,index){var column,line;null==$$9.$$s||$$9.$$s;return null==line_source&&(line_source=nil),null==index&&(index=nil),column=line_source.$index(/\S/),line=$rb_plus(index,1),$$($nesting,"ManualFragment").$new(line,column,line_source,nil)}).$$s=self,$$9.$$arity=2,$$9)),$$$($$$($$$("::","Opal"),"SourceMap"),"File").$new(manual_fragments,self.$filename(),self.$source()))},$JsProcessor_source_map$8.$$arity=0),Opal.def($JsProcessor_source$10,"$source",$JsProcessor_source$10=function(){return $rb_plus(this.source.$to_s(),this.$mark_as_required(this.filename))},$JsProcessor_source$10.$$arity=0)}($nesting[0],$$($nesting,"Processor"),$nesting),function($base,self,$RubyProcessor_required_trees$18){var $RubyProcessor_match$ques$19,$nesting=[self=$klass($base,self,"RubyProcessor")].concat($RubyProcessor_required_trees$18);self.$$prototype.compiled=self.$$prototype.cache=self.$$prototype.filename=self.$$prototype.source=self.$$prototype.options=nil,self.$handles("rb","opal"),Opal.def(self,"$source",$RubyProcessor_required_trees$18=function(){return this.$compiled().$result()},$RubyProcessor_required_trees$18.$$arity=0),Opal.def(self,"$source_map",$RubyProcessor_required_trees$18=function(){return this.$compiled().$source_map()},$RubyProcessor_required_trees$18.$$arity=0),Opal.def(self,"$compiled",$RubyProcessor_required_trees$18=function(){var $$14,$ret_or_4,self=this;return self.compiled=$truthy($ret_or_4=self.compiled)?$ret_or_4:$send($$$($$($nesting,"Opal"),"Cache"),"fetch",[self.cache,self.$cache_key()],(($$14=function(){var self=null==$$14.$$s?this:$$14.$$s,compiler=nil;return null==self.source&&(self.source=nil),null==self.filename&&(self.filename=nil),(compiler=self.$compiler_for(self.source,$hash2(["file"],{file:self.filename}))).$compile(),compiler}).$$s=self,$$14.$$arity=0,$$14))},$RubyProcessor_required_trees$18.$$arity=0),Opal.def(self,"$cache_key",$RubyProcessor_required_trees$18=function(){return[this.$class(),this.filename,this.source,this.options]},$RubyProcessor_required_trees$18.$$arity=0),Opal.def(self,"$compiler_for",$RubyProcessor_required_trees$18=function(source,options){return null==options&&(options=$hash2([],{})),$$$($$$("::","Opal"),"Compiler").$new(source,this.options.$merge(options))},$RubyProcessor_required_trees$18.$$arity=-2),Opal.def(self,"$requires",$RubyProcessor_required_trees$18=function(){return this.$compiled().$requires()},$RubyProcessor_required_trees$18.$$arity=0),Opal.def(self,"$required_trees",$RubyProcessor_required_trees$18=function(){return this.$compiled().$required_trees()},$RubyProcessor_required_trees$18.$$arity=0),Opal.defs(self,"$match?",$RubyProcessor_match$ques$19=function(other){var $ret_or_5,$zuper_ii,$iter=$RubyProcessor_match$ques$19.$$p,$zuper=nil,$zuper_i=nil;for($iter&&($RubyProcessor_match$ques$19.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return $truthy($ret_or_5=$send2(this,$find_super(this,"match?",$RubyProcessor_match$ques$19,!1,!0),"match?",$zuper,$iter))?$ret_or_5:$$($nesting,"File").$extname(other.$to_s())["$=="]("")},$RubyProcessor_match$ques$19.$$arity=1)}($nesting[0],$$($nesting,"Processor"),$nesting),function($base,$OpalERBProcessor_prepare$22,$parent_nesting){var $OpalERBProcessor_initialize$20,$OpalERBProcessor_requires$21;[$OpalERBProcessor_prepare$22=$klass($base,$OpalERBProcessor_prepare$22,"OpalERBProcessor")].concat($parent_nesting),$OpalERBProcessor_prepare$22.$$prototype.source=$OpalERBProcessor_prepare$22.$$prototype.filename=nil,$OpalERBProcessor_prepare$22.$handles("opalerb"),Opal.def($OpalERBProcessor_prepare$22,"$initialize",$OpalERBProcessor_initialize$20=function($a){var $zuper_ii,$iter=$OpalERBProcessor_initialize$20.$$p,$zuper=nil,$zuper_i=nil;for($iter&&($OpalERBProcessor_initialize$20.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return Opal.slice.call(arguments,0,arguments.length),$send2(this,$find_super(this,"initialize",$OpalERBProcessor_initialize$20,!1,!0),"initialize",$zuper,$iter),this.source=this.$prepare(this.source,this.filename)},$OpalERBProcessor_initialize$20.$$arity=-1),Opal.def($OpalERBProcessor_prepare$22,"$requires",$OpalERBProcessor_requires$21=function(){var $zuper_ii,$iter=$OpalERBProcessor_requires$21.$$p,$zuper=nil,$zuper_i=nil;for($iter&&($OpalERBProcessor_requires$21.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return $rb_plus(["erb"],$send2(this,$find_super(this,"requires",$OpalERBProcessor_requires$21,!1,!0),"requires",$zuper,$iter))},$OpalERBProcessor_requires$21.$$arity=0),$OpalERBProcessor_prepare$22.$private(),Opal.def($OpalERBProcessor_prepare$22,"$prepare",$OpalERBProcessor_prepare$22=function(source,path){return $$$($$$($$$("::","Opal"),"ERB"),"Compiler").$new(source,path).$prepared_source()},$OpalERBProcessor_prepare$22.$$arity=2)}($nesting[0],$$($nesting,"RubyProcessor"),$nesting),function($base,$ERBProcessor_source$23,$parent_nesting){$ERBProcessor_source$23=$klass($base,$ERBProcessor_source$23,"ERBProcessor"),[$ERBProcessor_source$23].concat($parent_nesting);return $ERBProcessor_source$23.$$prototype.source=$ERBProcessor_source$23.$$prototype.filename=nil,$ERBProcessor_source$23.$handles("erb"),Opal.def($ERBProcessor_source$23,"$source",$ERBProcessor_source$23=function(){var result=$$$("::","ERB").$new(this.source.$to_s()).$result();return"Opal.modules["+$$$($$$("::","Opal"),"Compiler").$module_name(this.filename).$inspect()+"] = function() {"+result+"};"},$ERBProcessor_source$23.$$arity=0),nil&&"source"}($nesting[0],$$($nesting,"Processor"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules.base64=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$hash2=Opal.hash2,$truthy=Opal.truthy;return Opal.add_stubs(["$raise","$delete"]),function($base,$Base64_urlsafe_encode64$6){var self=$module($base,"Base64"),$nesting=[self].concat($Base64_urlsafe_encode64$6),chars="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",encode=function(input){for(var block,charCode,str=String(input),idx=0,map=chars,output="";str.charAt(0|idx)||(map="=",idx%1);output+=map.charAt(63&block>>8-idx%1*8))255<(charCode=str.charCodeAt(idx+=.75))&&self.$raise($$($nesting,"ArgumentError"),"invalid character (failed: The string to be encoded contains characters outside of the Latin1 range.)"),block=block<<8|charCode;return output},decode=function(input){var str=String(input).replace(/=+$/,"");str.length%4==1&&self.$raise($$($nesting,"ArgumentError"),"invalid base64 (failed: The string to be decoded is not correctly encoded.)");for(var bs,buffer,bc=0,idx=0,output="";buffer=str.charAt(idx++);~buffer&&(bs=bc%4?64*bs+buffer:buffer,bc++%4)&&(output+=String.fromCharCode(255&bs>>(-2*bc&6))))buffer=chars.indexOf(buffer);return output};return Opal.defs(self,"$decode64",$Base64_urlsafe_encode64$6=function(string){return decode(string.replace(/\r?\n/g,""))},$Base64_urlsafe_encode64$6.$$arity=1),Opal.defs(self,"$encode64",$Base64_urlsafe_encode64$6=function(string){return encode(string).replace(/(.{60})/g,"$1\n").replace(/([^\n])$/g,"$1\n")},$Base64_urlsafe_encode64$6.$$arity=1),Opal.defs(self,"$strict_decode64",$Base64_urlsafe_encode64$6=function(string){return decode(string)},$Base64_urlsafe_encode64$6.$$arity=1),Opal.defs(self,"$strict_encode64",$Base64_urlsafe_encode64$6=function(string){return encode(string)},$Base64_urlsafe_encode64$6.$$arity=1),Opal.defs(self,"$urlsafe_decode64",$Base64_urlsafe_encode64$6=function(string){return decode(string.replace(/\-/g,"+").replace(/_/g,"/"))},$Base64_urlsafe_encode64$6.$$arity=1),Opal.defs(self,"$urlsafe_encode64",$Base64_urlsafe_encode64$6=function(string,padding){var str=nil;if(null==padding)padding=$hash2([],{});else if(!padding.$$is_hash)throw Opal.ArgumentError.$new("expected kwargs");return null==(padding=padding.$$smap.padding)&&(padding=!0),str=encode(string).replace(/\+/g,"-").replace(/\//g,"_"),$truthy(padding)||(str=str.$delete("=")),str},$Base64_urlsafe_encode64$6.$$arity=-2),nil&&"urlsafe_encode64"}($nesting[0],$nesting)},Opal.modules["corelib/pack_unpack/format_string_parser"]=function(Opal){Opal.top;var $nesting=[],$$=(Opal.nil,Opal.$$$,Opal.$$),$module=Opal.module;return Opal.add_stubs(["$raise"]),function($base,$parent_nesting){var self=$module($base,"PackUnpack"),$nesting=[self].concat($parent_nesting),directives=["C","S","L","Q","J","c","s","l","q","j","n","N","v","V","U","w","D","d","F","f","E","e","G","g","A","a","Z","B","b","H","h","u","M","m","P","p","@","X","x"],modifiers=["!","_",">","<"];self.eachDirectiveAndCount=function(format,callback){var currentDirective,currentCount,currentModifiers,countSpecified;function reset(){currentDirective=null,currentCount=0,countSpecified=!(currentModifiers=[])}function yieldAndReset(){null!=currentDirective&&(!/[sSiIlLqQjJ]/.test(currentDirective)&&0<currentModifiers.length&&self.$raise($$($nesting,"ArgumentError"),"'"+currentModifiers[0]+"' allowed only after types sSiIlLqQjJ"),-1!==currentModifiers.indexOf("<")&&-1!==currentModifiers.indexOf(">")&&self.$raise($$($nesting,"RangeError"),"Can't use both '<' and '>'"),countSpecified||(currentCount=1),-1!==currentModifiers.indexOf(">")&&(currentDirective+=">"),callback(currentDirective,currentCount)),reset()}reset();for(var i=0;i<format.length;i++){var currentChar=format[i];-1!==directives.indexOf(currentChar)?(yieldAndReset(),currentDirective=currentChar):currentDirective&&(/\d/.test(currentChar)?(currentCount=10*currentCount+parseInt(currentChar,10),countSpecified=!0):"*"===currentChar&&!1===countSpecified?(currentCount=1/0,countSpecified=!0):-1!==modifiers.indexOf(currentChar)&&!1===countSpecified?currentModifiers.push(currentChar):yieldAndReset())}yieldAndReset()}}($nesting[0],$nesting)},Opal.modules["corelib/string/unpack"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$klass=Opal.klass;return Opal.add_stubs(["$require","$flatten","$decode64","$raise","$delete","$gsub","$coerce_to!","$inspect","$[]","$unpack"]),self.$require("base64"),self.$require("corelib/pack_unpack/format_string_parser"),function($base,$String_unpack1$2){var expected,given,charCodesToFilter,self=$klass($base,null,"String"),$nesting=[self].concat($String_unpack1$2),eachDirectiveAndCount=Opal.PackUnpack.eachDirectiveAndCount;function mapChunksToWords(callback){return function(data){return callback(data).map(function(chunk){return chunk.reverse().reduce(function(result,singleByte){return 256*result+singleByte},0)})}}function chunkBy(chunkSize,callback){return function(data){for(var array=callback(data),chunks=[],chunksCount=array.length/chunkSize,i=0;i<chunksCount;i++){var chunk=array.splice(0,chunkSize);chunk.length===chunkSize&&chunks.push(chunk)}return chunks}}function toNByteSigned(bytesCount,callback){return function(bitsCount){var unsignedBits=callback(bitsCount),bitsCount=8*bytesCount,limit=Math.pow(2,bitsCount);return unsignedBits.map(function(n){return limit/2<=n&&(n-=limit),n})}}function bytesToAsciiChars(callback){return function(data){return callback(data).map(function(singleByte){return String.fromCharCode(singleByte)})}}function joinChars(callback){return function(data){return callback(data).join("")}}function wrapIntoArray(callback){return function(data){return[callback(data)]}}function invertChunks(callback){return function(data){return callback(data).map(function(chunk){return chunk.reverse()})}}function identityFunction(value){return value}var callback,handlers={C:identityFunction,S:mapChunksToWords(chunkBy(2,identityFunction)),L:mapChunksToWords(chunkBy(4,identityFunction)),Q:mapChunksToWords(chunkBy(8,identityFunction)),J:null,"S>":mapChunksToWords(invertChunks(chunkBy(2,identityFunction))),"L>":mapChunksToWords(invertChunks(chunkBy(4,identityFunction))),"Q>":mapChunksToWords(invertChunks(chunkBy(8,identityFunction))),c:toNByteSigned(1,identityFunction),s:toNByteSigned(2,mapChunksToWords(chunkBy(2,identityFunction))),l:toNByteSigned(4,mapChunksToWords(chunkBy(4,identityFunction))),q:toNByteSigned(8,mapChunksToWords(chunkBy(8,identityFunction))),j:null,"s>":toNByteSigned(2,mapChunksToWords(invertChunks(chunkBy(2,identityFunction)))),"l>":toNByteSigned(4,mapChunksToWords(invertChunks(chunkBy(4,identityFunction)))),"q>":toNByteSigned(8,mapChunksToWords(invertChunks(chunkBy(8,identityFunction)))),n:null,N:null,v:null,V:null,U:identityFunction,w:function(data){for(var bytes=callback(data),result=[],buffer="",i=0;i<bytes.length;i++){var bits=bytes[i].toString(2),decoded=(bits=Array(8-bits.length+1).join("0").concat(bits))[0];bits=bits.slice(1,bits.length),buffer=buffer.concat(bits),"0"===decoded&&(decoded=parseInt(buffer,2),result.push(decoded),buffer="")}return result},D:null,d:null,F:null,f:null,E:null,e:null,G:null,g:null,A:wrapIntoArray(joinChars(bytesToAsciiChars((charCodesToFilter=["\0"," "].map(function(s){return s.charCodeAt(0)}),function(callback){return function(data){for(var charCodes=callback(data);-1!==charCodesToFilter.indexOf(charCodes[charCodes.length-1]);)charCodes=charCodes.slice(0,charCodes.length-1);return charCodes}})(callback=identityFunction)))),a:wrapIntoArray(joinChars(bytesToAsciiChars(identityFunction))),Z:joinChars(bytesToAsciiChars(identityFunction)),B:joinChars(identityFunction),b:joinChars(identityFunction),H:joinChars(identityFunction),h:joinChars(identityFunction),u:joinChars(bytesToAsciiChars(function(callback){return function(data){for(var bytes=callback(data),i=0,length=0,result=[];;){if(!(i<bytes.length))break;var n=bytes[i]-32&63;if(10!==bytes[++i]){if(45<n)return"";for(length+=n;0<n;){var b1=bytes[i],b2=bytes[i+1],b3=bytes[i+2],b1=(b1-32&63)<<2|(b2-32&63)>>4,b2=(b2-32&63)<<4|(b3-32&63)>>2,b3=(b3-32&63)<<6|bytes[i+3]-32&63;result.push(255&b1),result.push(255&b2),result.push(255&b3),i+=4,n-=3}++i}}return result.slice(0,length)}}(identityFunction))),M:function(callback){return function(data){return callback(data).replace(/[\t\x20]$/gm,"").replace(/=(?:\r\n?|\n|$)/g,"").replace(/=([a-fA-F0-9]{2})/g,function($0,codePoint){codePoint=parseInt(codePoint,16);return 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self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$module=Opal.module,$klass=Opal.klass,$const_set=Opal.const_set,$regexp=Opal.regexp,$send=Opal.send,$to_a=Opal.to_a,$def=Opal.def,$truthy=Opal.truthy;return Opal.add_stubs("require,freeze,quote,paths,new,append_paths,append_extensions,expand,nil?,exist?,open,to_proc,=~,absolute?,find_path,file_finder,extensions,private,Pathname,find,attr_reader"),self.$require("opal/regexp_anchors"),self.$require("opal/hike"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$super,$parent_nesting){var self=$klass($base,null,"PathReader"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return 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null==name&&(name=nil),null==value&&(value=nil),(null==$$2.$$s?this:$$2.$$s).$instance_variable_set("@"+name,value)}),{$$arity:2,$$s:this}),nil}),1),self.$protected("assign_properties"),$alias(self,"original_dup","dup"),self.$private("original_dup"),$def(self,"$dup",(function(){return this}),0),$alias(self,"clone","dup"),$def(self,"$updated",(function(type,children,properties){var new_type,new_children,new_properties,$ret_or_1=nil,copy=nil;return null==type&&(type=nil),null==children&&(children=nil),null==properties&&(properties=nil),new_type=$truthy($ret_or_1=type)?$ret_or_1:this.type,new_children=$truthy($ret_or_1=children)?$ret_or_1:this.children,new_properties=$truthy($ret_or_1=properties)?$ret_or_1:$hash2([],{}),$eqeq(this.type,new_type)&&$eqeq(this.children,new_children)&&$truthy(properties["$nil?"]())?this:((copy=this.$original_dup()).$send("initialize",new_type,new_children,new_properties),copy)}),-1),$def(self,"$==",(function(other){var $ret_or_1=nil;return!!$truthy(this["$equal?"](other))||!!$truthy(other["$respond_to?"]("to_ast"))&&(other=other.$to_ast(),$truthy($ret_or_1=other.$type()["$=="](this.$type()))?other.$children()["$=="](this.$children()):$ret_or_1)}),1),$def(self,"$concat",(function(array){return this.$updated(nil,$rb_plus(this.children,array.$to_a()))}),1),$alias(self,"+","concat"),$def(self,"$append",(function(element){return this.$updated(nil,$rb_plus(this.children,[element]))}),1),$alias(self,"<<","append"),$def(self,"$to_sexp",(function(indent){var indented,sexp=nil;return null==indent&&(indent=0),indented=$rb_times("  ",indent),sexp=indented+"("+this.$fancy_type(),$send(this.$children(),"each",[],(function(child){return null==child&&(child=nil),sexp=$truthy(child["$is_a?"]($$("Node")))?$rb_plus(sexp,"\n"+child.$to_sexp($rb_plus(indent,1))):$rb_plus(sexp," "+child.$inspect())}),1),sexp=$rb_plus(sexp,")")}),-1),$alias(self,"to_s","to_sexp"),$def(self,"$inspect",(function(indent){var indented,sexp=nil;return null==indent&&(indent=0),indented=$rb_times("  ",indent),sexp=indented+"s(:"+this.type,$send(this.$children(),"each",[],(function(child){return null==child&&(child=nil),sexp=$truthy(child["$is_a?"]($$("Node")))?$rb_plus(sexp,",\n"+child.$inspect($rb_plus(indent,1))):$rb_plus(sexp,", "+child.$inspect())}),1),sexp=$rb_plus(sexp,")")}),-1),$def(self,"$to_ast",(function(){return this}),0),$def(self,"$to_sexp_array",(function(){var children_sexp_arrs;return children_sexp_arrs=$send(this.$children(),"map",[],(function(child){return null==child&&(child=nil),$truthy(child["$is_a?"]($$("Node")))?child.$to_sexp_array():child}),1),[this.$type()].concat($to_a(children_sexp_arrs))}),0),$def(self,"$deconstruct",(function(){return[this.$type()].concat($to_a(this.$children()))}),0),self.$protected(),$def(self,"$fancy_type",(function(){return this.type.$to_s().$gsub("_","-")}),0)}($nesting[0],0,$nesting)}($nesting[0],$nesting)},Opal.modules["ast/processor/mixin"]=function(Opal){var $nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$def=Opal.def,$send=Opal.send;return Opal.add_stubs("nil?,to_ast,type,respond_to?,send,handler_missing,map,to_a,process"),function($base,$parent_nesting){var $nesting=[$module($base,"AST")].concat($parent_nesting);return function($base,$super,$parent_nesting){return function($base){var self=$module($base,"Mixin");return $def(self,"$process",(function(node){var on_handler,new_node=nil;return $truthy(node["$nil?"]())?nil:(on_handler="on_"+(node=node.$to_ast()).$type(),new_node=$truthy(this["$respond_to?"](on_handler))?this.$send(on_handler,node):this.$handler_missing(node),$truthy(new_node)&&(node=new_node),node)}),1),$def(self,"$process_all",(function(nodes){return $send(nodes.$to_a(),"map",[],(function $$1(node){return null==node&&(node=nil),(null==$$1.$$s?this:$$1.$$s).$process(node)}),{$$arity:1,$$s:this})}),1),$def(self,"$handler_missing",(function(node){return nil}),1)}([$klass($base,null,"Processor")].concat($parent_nesting)[0])}($nesting[0],0,$nesting)}($nesting[0],$nesting)},Opal.modules["ast/processor"]=function(Opal){var $nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass;return Opal.add_stubs("require,include"),function($base,$parent_nesting){var $nesting=[$module($base,"AST")].concat($parent_nesting);return function($base,$super,$parent_nesting){var self=$klass($base,null,"Processor"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return self.$require("ast/processor/mixin"),self.$include($$("Mixin"))}($nesting[0],0,$nesting)}($nesting[0],$nesting)},Opal.modules["ast/sexp"]=function(Opal){var $nesting=[],$module=(Opal.nil,Opal.module),$def=Opal.def;return Opal.add_stubs("new"),function($base,$parent_nesting){var $nesting=[$module($base,"AST")].concat($parent_nesting);return function($base,$parent_nesting){var self=$module($base,"Sexp"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return $def(self,"$s",(function(type,$a){var children;return children=Opal.slice.call(arguments,1),$$("Node").$new(type,children)}),-2)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules.ast=function(Opal){Opal.nil;var self,$module=Opal.module;return Opal.add_stubs("require"),(self=$module([][0],"AST")).$require("ast/node"),self.$require("ast/processor"),self.$require("ast/sexp")},Opal.modules["parser/ast/node"]=function(Opal){var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$module=Opal.module,$klass=Opal.klass,$alias=Opal.alias,$truthy=Opal.truthy,$send=Opal.send,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$def=Opal.def;return Opal.add_stubs("attr_reader,[],frozen?,dup,node=,-"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$parent_nesting){return function($base,$super){var self=$klass($base,$super,"Node");return self.$attr_reader("location"),$alias(self,"loc","location"),$def(self,"$assign_properties",(function(properties){var location=nil,$writer=nil;return $truthy(location=properties["$[]"]("location"))?($truthy(location["$frozen?"]())&&(location=location.$dup()),$send(location,"node=",$to_a($writer=[this])),$writer[$rb_minus($writer.length,1)],this.location=location):nil}),1)}([$module($base,"AST")].concat($parent_nesting)[0],$$$($$$("AST"),"Node"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/ast/node"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$hash2=Opal.hash2,$send2=Opal.send2,$find_super=Opal.find_super,$def=Opal.def;return Opal.add_stubs("require,attr_reader,[],frozen?,dup,merge!,loc,line,column"),self.$require("ast"),self.$require("parser/ast/node"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){return function($base,$super){var self=$klass($base,$super,"Node");return self.$$prototype.meta=nil,self.$attr_reader("meta"),$def(self,"$assign_properties",(function $$assign_properties(properties){var $yield=$$assign_properties.$$p||nil,meta=nil,$ret_or_1=nil;return delete $$assign_properties.$$p,$truthy(meta=properties["$[]"]("meta"))?($truthy(meta["$frozen?"]())&&(meta=meta.$dup()),this.meta["$merge!"](meta)):this.meta=$truthy($ret_or_1=this.meta)?$ret_or_1:$hash2([],{}),$send2(this,$find_super(this,"assign_properties",$$assign_properties,!1,!0),"assign_properties",[properties],$yield)}),1),$def(self,"$line",(function(){return $truthy(this.$loc())?this.$loc().$line():nil}),0),$def(self,"$column",(function(){return $truthy(this.$loc())?this.$loc().$column():nil}),0)}([$module($base,"AST")].concat($parent_nesting)[0],$$$($$$($$$("Parser"),"AST"),"Node"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["racc/parser"]=function(Opal){var $nesting=[],$$=Opal.$r($nesting),nil=Opal.nil,$$$=Opal.$$$,$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$const_set=Opal.const_set,$defs=Opal.defs,$gvars=Opal.gvars,$rb_lt=Opal.rb_lt,$send=Opal.send,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$def=Opal.def,$to_ary=Opal.to_ary,$neqeq=Opal.neqeq,$rb_plus=Opal.rb_plus,$eqeq=Opal.eqeq,$rb_ge=Opal.rb_ge,$rb_gt=Opal.rb_gt,$eqeqeq=Opal.eqeqeq,$rb_le=Opal.rb_le,$rb_times=Opal.rb_times;return Opal.add_stubs("[],class,<,size,[]=,-,__send__,_racc_setup,raise,_racc_init_sysvars,catch,!=,next_token,racc_read_token,+,==,>=,_racc_evalact,!,>,push,racc_shift,-@,_racc_do_reduce,===,racc_accept,throw,on_error,<=,pop,racc_e_pop,inspect,racc_next_state,*,racc_reduce,sprintf,token_to_str,print,racc_token2str,puts,racc_print_stacks,empty?,each,racc_print_states,each_index"),function($base,$parent_nesting){var $nesting=[$module($base,"Racc")].concat($parent_nesting),$$=Opal.$r($nesting);$klass($nesting[0],$$("StandardError"),"ParseError")}($nesting[0],$nesting),$truthy($$$("::","ParseError","skip_raise")?"constant":nil)||$const_set($nesting[0],"ParseError",$$$($$("Racc"),"ParseError")),function($base,$parent_nesting){var $nesting=[$module($base,"Racc")].concat($parent_nesting),$$=Opal.$r($nesting);return $truthy($$("Racc_No_Extensions","skip_raise")?"constant":nil)||$const_set($nesting[0],"Racc_No_Extensions",!1),function($base,$super,$parent_nesting){var self=$klass($base,null,"Parser"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;return $proto.yydebug=$proto.racc_debug_out=$proto.racc_error_status=$proto.racc_t=$proto.racc_vstack=$proto.racc_val=$proto.racc_state=$proto.racc_tstack=nil,$const_set($nesting[0],"Racc_Runtime_Version","1.4.6"),$const_set($nesting[0],"Racc_Runtime_Revision",["originalRevision:","1.8"]["$[]"](1)),$const_set($nesting[0],"Racc_Runtime_Core_Version_R","1.4.6"),$const_set($nesting[0],"Racc_Runtime_Core_Revision_R",["originalRevision:","1.8"]["$[]"](1)),$const_set($nesting[0],"Racc_Main_Parsing_Routine","_racc_do_parse_rb"),$const_set($nesting[0],"Racc_YY_Parse_Method","_racc_yyparse_rb"),$const_set($nesting[0],"Racc_Runtime_Core_Version",$$("Racc_Runtime_Core_Version_R")),$const_set($nesting[0],"Racc_Runtime_Core_Revision",$$("Racc_Runtime_Core_Revision_R")),$const_set($nesting[0],"Racc_Runtime_Type","ruby"),$defs($$("Parser"),"$racc_runtime_type",(function(){return $$("Racc_Runtime_Type")}),0),$def(self,"$_racc_setup",(function(){var $a,$b,$ret_or_1=nil,arg=nil,$writer=nil;return null==$gvars.stderr&&($gvars.stderr=nil),$truthy($$$(this.$class(),"Racc_debug_parser"))||(this.yydebug=!1),$truthy(null!=($a=this.yydebug)&&$a!==nil?"instance-variable":nil)||(this.yydebug=!1),$truthy(this.yydebug)&&($truthy(null!=($b=this.racc_debug_out)&&$b!==nil?"instance-variable":nil)||(this.racc_debug_out=$gvars.stderr),this.racc_debug_out=$truthy($ret_or_1=this.racc_debug_out)?$ret_or_1:$gvars.stderr),arg=$$$(this.$class(),"Racc_arg"),$truthy($rb_lt(arg.$size(),14))&&($send(arg,"[]=",$to_a($writer=[13,!0])),$writer[$rb_minus($writer.length,1)]),arg}),0),$def(self,"$_racc_init_sysvars",(function(){return this.racc_state=[0],this.racc_tstack=[],this.racc_vstack=[],this.racc_t=nil,this.racc_val=nil,this.racc_read_next=!0,this.racc_user_yyerror=!1,this.racc_error_status=0}),0),$def(self,"$do_parse",(function(){return 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this.$__send__($$("Racc_YY_Parse_Method"),recv,mid,this.$_racc_setup(),!0)}),2),$def(self,"$_racc_yyparse_rb",(function(recv,mid,arg,c_debug){var $a,action_table=nil,action_check=nil,action_default=nil,action_pointer=nil,token_table=nil,act=nil,i=nil;return $a=$to_ary(arg),action_table=null==$a[0]?nil:$a[0],action_check=null==$a[1]?nil:$a[1],action_default=null==$a[2]?nil:$a[2],action_pointer=null==$a[3]?nil:$a[3],null==$a[4]?nil:$a[4],null==$a[5]?nil:$a[5],null==$a[6]?nil:$a[6],null==$a[7]?nil:$a[7],null==$a[8]?nil:$a[8],null==$a[9]?nil:$a[9],token_table=null==$a[10]?nil:$a[10],null==$a[11]?nil:$a[11],null==$a[12]?nil:$a[12],null==$a[13]?nil:$a[13],this.$_racc_init_sysvars(),act=nil,i=nil,$send(this,"catch",["racc_end_parse"],(function $$2(){var self=null==$$2.$$s?this:$$2.$$s;for(null==self.racc_state&&(self.racc_state=nil);!$truthy(i=action_pointer["$[]"](self.racc_state["$[]"](-1)));)for(;$truthy(act=self.$_racc_evalact(action_default["$[]"](self.racc_state["$[]"](-1)),arg)););return $send(recv,"__send__",[mid],(function $$3(tok,val){var self=null==$$3.$$s?this:$$3.$$s,$ret_or_1=nil,$ret_or_2=nil;for(null==self.racc_t&&(self.racc_t=nil),null==self.racc_state&&(self.racc_state=nil),null==self.racc_read_next&&(self.racc_read_next=nil),null==tok&&(tok=nil),null==val&&(val=nil),$truthy(tok)?self.racc_t=$truthy($ret_or_1=token_table["$[]"](tok))?$ret_or_1:1:self.racc_t=0,self.racc_val=val,self.racc_read_next=!1,i=$rb_plus(i,self.racc_t),$truthy($rb_ge(i,0))&&$truthy(act=action_table["$[]"](i))&&$eqeq(action_check["$[]"](i),self.racc_state["$[]"](-1))||(act=action_default["$[]"](self.racc_state["$[]"](-1)));$truthy(act=self.$_racc_evalact(act,arg)););for(;$truthy($truthy($ret_or_1=$truthy($ret_or_2=(i=action_pointer["$[]"](self.racc_state["$[]"](-1)))["$!"]())?$ret_or_2:self.racc_read_next["$!"]())?$ret_or_1:self.racc_t["$=="](0));)for($truthy(i)&&$truthy(i=$rb_plus(i,self.racc_t))&&$truthy($rb_ge(i,0))&&$truthy(act=action_table["$[]"](i))&&$eqeq(action_check["$[]"](i),self.racc_state["$[]"](-1))||(act=action_default["$[]"](self.racc_state["$[]"](-1)));$truthy(act=self.$_racc_evalact(act,arg)););}),{$$arity:2,$$s:self})}),{$$arity:0,$$s:this})}),4),$def(self,"$_racc_evalact",(function(act,arg){var $a,shift_n,action_table=nil,action_check=nil,action_pointer=nil,reduce_n=nil,code=nil,$ret_or_1=nil,i=nil;if(action_table=null==($a=$to_ary(arg))[0]?nil:$a[0],action_check=null==$a[1]?nil:$a[1],null==$a[2]?nil:$a[2],action_pointer=null==$a[3]?nil:$a[3],null==$a[4]?nil:$a[4],null==$a[5]?nil:$a[5],null==$a[6]?nil:$a[6],null==$a[7]?nil:$a[7],null==$a[8]?nil:$a[8],null==$a[9]?nil:$a[9],null==$a[10]?nil:$a[10],shift_n=null==$a[11]?nil:$a[11],reduce_n=null==$a[12]?nil:$a[12],null==$a[13]?nil:$a[13],null==$a[14]?nil:$a[14],$truthy($rb_gt(act,0))&&$truthy($rb_lt(act,shift_n)))$truthy($rb_gt(this.racc_error_status,0))&&($eqeq(this.racc_t,1)||(this.racc_error_status=$rb_minus(this.racc_error_status,1))),this.racc_vstack.$push(this.racc_val),this.racc_state.$push(act),this.racc_read_next=!0,$truthy(this.yydebug)&&(this.racc_tstack.$push(this.racc_t),this.$racc_shift(this.racc_t,this.racc_tstack,this.racc_vstack));else if($truthy($rb_lt(act,0))&&$truthy($rb_gt(act,reduce_n["$-@"]()))){if(code=$send(this,"catch",["racc_jump"],(function $$4(){var self=null==$$4.$$s?this:$$4.$$s;return null==self.racc_state&&(self.racc_state=nil),self.racc_state.$push(self.$_racc_do_reduce(arg,act)),!1}),{$$arity:0,$$s:this}),$truthy(code)){if($eqeqeq(1,$ret_or_1=code))return this.racc_user_yyerror=!0,reduce_n["$-@"]();if($eqeqeq(2,$ret_or_1))return shift_n;this.$raise("[Racc Bug] unknown jump code")}}else if($eqeq(act,shift_n))$truthy(this.yydebug)&&this.$racc_accept(),this.$throw("racc_end_parse",this.racc_vstack["$[]"](0));else{if($eqeq(act,reduce_n["$-@"]())){for($eqeqeq(0,$ret_or_1=this.racc_error_status)?$truthy(arg["$[]"](21))||this.$on_error(this.racc_t,this.racc_val,this.racc_vstack):$eqeqeq(3,$ret_or_1)&&($eqeq(this.racc_t,0)&&this.$throw("racc_end_parse",nil),this.racc_read_next=!0),this.racc_user_yyerror=!1,this.racc_error_status=3;$truthy(!0)&&!($truthy(i=action_pointer["$[]"](this.racc_state["$[]"](-1)))&&(i=$rb_plus(i,1),$truthy($rb_ge(i,0))&&$truthy(act=action_table["$[]"](i))&&$eqeq(action_check["$[]"](i),this.racc_state["$[]"](-1))));)$truthy($rb_le(this.racc_state.$size(),1))&&this.$throw("racc_end_parse",nil),this.racc_state.$pop(),this.racc_vstack.$pop(),$truthy(this.yydebug)&&(this.racc_tstack.$pop(),this.$racc_e_pop(this.racc_state,this.racc_tstack,this.racc_vstack));return act}this.$raise("[Racc Bug] unknown action "+act.$inspect())}return 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reserved for numbered parameter",ordinary_param_defined:"ordinary parameter is defined",numparam_used_in_outer_scope:"numbered parameter is already used in an outer scope",circular_argument_reference:"circular argument reference %{var_name}",pm_interp_in_var_name:"symbol literal with interpolation is not allowed",lvar_name:"`%{name}' is not allowed as a local variable name",undefined_lvar:"no such local variable: `%{name}'",duplicate_variable_name:"duplicate variable name %{name}",duplicate_pattern_key:"duplicate hash pattern key %{name}",endless_setter:"setter method cannot be defined in an endless method definition",invalid_id_to_get:"identifier %{identifier} is not valid to get",forward_arg_after_restarg:"... after rest argument",no_anonymous_blockarg:"no anonymous block parameter",useless_else:"else without rescue is useless",duplicate_hash_key:"key is duplicated and overwritten",invalid_encoding:"literal contains escape sequences incompatible with UTF-8",invalid_action:"cannot %{action}",clobbered:"clobbered by: %{action}",different_replacements:"different replacements: %{replacement} vs %{other_replacement}",swallowed_insertions:"this replacement:",swallowed_insertions_conflict:"swallows some inner rewriting actions:",crossing_deletions:"the deletion of:",crossing_deletions_conflict:"is crossing:",crossing_insertions:"the rewriting action on:",crossing_insertions_conflict:"is crossing that on:"}).$freeze()),function($base,$parent_nesting){var self=$module($base,"Messages"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return $defs(self,"$compile",(function(reason,arguments$){var template;return template=$$("MESSAGES")["$[]"](reason),$eqeqeq($$("Hash"),arguments$)&&$truthy(arguments$["$empty?"]())?template:this.$format(template,arguments$)}),2)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/deprecation"]=function(Opal){var 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$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$module=Opal.module,$klass=Opal.klass,$hash2=Opal.hash2,$lambda=Opal.lambda,$gvars=Opal.gvars,$send=Opal.send,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$def=Opal.def,$eqeq=Opal.eqeq,$truthy=Opal.truthy,$rb_plus=Opal.rb_plus,$const_set=Opal.const_set,$eqeqeq=Opal.eqeqeq,$range=Opal.range,$to_ary=Opal.to_ary,$rb_gt=(Opal.hash,Opal.rb_gt),$rb_lt=Opal.rb_lt,$slice=Opal.slice;return Opal.add_stubs("attr_reader,new,puts,render,consumer=,-,freeze,check_policy_validity,method,adjust,source_range,empty?,==,source_buffer,raise,combine,action_root,merge!,dup,contract,+,begin_pos,range,end_pos,check_range_validity,moved,to_s,replace,wrap,source,each,ordered_replacements,<<,[],length,join,nested_actions,class,name,action_summary,warn_of_deprecation,insert_before,insert_after,extend,protected,private,as_replacements,===,size,first,map,to_range,inspect,values,>,<,trigger_policy,process"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Source")].concat($parent_nesting);return function($base,$super,$parent_nesting){var self=$klass($base,null,"TreeRewriter"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;return $proto.diagnostics=$proto.source_buffer=$proto.enforcer=$proto.action_root=$proto.in_transaction=$proto.policy=nil,self.$attr_reader("source_buffer"),self.$attr_reader("diagnostics"),$def(self,"$initialize",(function(source_buffer,$kwargs){var crossing_deletions,different_replacements,swallowed_insertions,$writer,all_encompassing_range;if(null==$kwargs)$kwargs=$hash2([],{});else if(!$kwargs.$$is_hash)throw Opal.ArgumentError.$new("expected kwargs");return null==(crossing_deletions=$kwargs.$$smap.crossing_deletions)&&(crossing_deletions="accept"),null==(different_replacements=$kwargs.$$smap.different_replacements)&&(different_replacements="accept"),null==(swallowed_insertions=$kwargs.$$smap.swallowed_insertions)&&(swallowed_insertions="accept"),this.diagnostics=$$$($$("Diagnostic"),"Engine").$new(),$writer=[$lambda((function(diag){return null==$gvars.stderr&&($gvars.stderr=nil),null==diag&&(diag=nil),$gvars.stderr.$puts(diag.$render())}),1)],$send(this.diagnostics,"consumer=",$to_a($writer)),$rb_minus($writer.length,1),this.source_buffer=source_buffer,this.in_transaction=!1,this.policy=$hash2(["crossing_deletions","different_replacements","swallowed_insertions"],{crossing_deletions:crossing_deletions,different_replacements:different_replacements,swallowed_insertions:swallowed_insertions}).$freeze(),this.$check_policy_validity(),this.enforcer=this.$method("enforce_policy"),all_encompassing_range=this.source_buffer.$source_range().$adjust($hash2(["begin_pos","end_pos"],{begin_pos:-1,end_pos:1})),this.action_root=$$$($$("TreeRewriter"),"Action").$new(all_encompassing_range,this.enforcer)}),-2),$def(self,"$empty?",(function(){return this.action_root["$empty?"]()}),0),$def(self,"$merge!",(function(with$){return $eqeq(this.$source_buffer(),with$.$source_buffer())||this.$raise("TreeRewriter are not for the same 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this.$combine(range,$hash2(["replacement"],{replacement:content}))}),2),$def(self,"$wrap",(function(range,insert_before,insert_after){return this.$combine(range,$hash2(["insert_before","insert_after"],{insert_before:insert_before.$to_s(),insert_after:insert_after.$to_s()}))}),3),$def(self,"$remove",(function(range){return this.$replace(range,"".$freeze())}),1),$def(self,"$insert_before",(function(range,content){return this.$wrap(range,content,nil)}),2),$def(self,"$insert_after",(function(range,content){return this.$wrap(range,nil,content)}),2),$def(self,"$process",(function(){var source=nil,chunks=nil,last_end=nil;return source=this.source_buffer.$source(),chunks=[],last_end=0,$send(this.action_root.$ordered_replacements(),"each",[],(function(range,replacement){return null==range&&(range=nil),null==replacement&&(replacement=nil),chunks["$<<"](source["$[]"](Opal.Range.$new(last_end,range.$begin_pos(),!0)))["$<<"](replacement),last_end=range.$end_pos()}),2),chunks["$<<"](source["$[]"](Opal.Range.$new(last_end,source.$length(),!0))),chunks.$join()}),0),$def(self,"$as_replacements",(function(){return this.action_root.$ordered_replacements()}),0),$def(self,"$as_nested_actions",(function(){return this.action_root.$nested_actions()}),0),$def(self,"$transaction",(function $$transaction(){var $yield=$$transaction.$$p||nil,self=this,previous=nil,restore_root=nil;return delete $$transaction.$$p,function(){try{return $yield===nil&&self.$raise(self.$class()+"#transaction requires block"),previous=self.in_transaction,self.in_transaction=!0,restore_root=self.action_root,Opal.yieldX($yield,[]),restore_root=nil,self}finally{$truthy(restore_root)&&(self.action_root=restore_root),self.in_transaction=previous}}()}),0),$def(self,"$in_transaction?",(function(){return this.in_transaction}),0),$def(self,"$inspect",(function(){return"#<"+this.$class()+" "+this.$source_buffer().$name()+": "+this.$action_summary()+">"}),0),$def(self,"$insert_before_multi",(function(range,text){return this.$class().$warn_of_deprecation(),this.$insert_before(range,text)}),2),$def(self,"$insert_after_multi",(function(range,text){return this.$class().$warn_of_deprecation(),this.$insert_after(range,text)}),2),$const_set($nesting[0],"DEPRECATION_WARNING",["TreeRewriter#insert_before_multi and insert_before_multi exist only for legacy compatibility.","Please update your code to use `wrap`, `insert_before` or `insert_after` instead."].$join("\n").$freeze()),self.$extend($$("Deprecation")),self.$protected(),self.$attr_reader("action_root"),self.$private(),$def(self,"$action_summary",(function(){var $ret_or_1,replacements=nil,suffix=nil,parts=nil;return replacements=this.$as_replacements(),$eqeqeq(0,$ret_or_1=replacements.$size())?"empty":($eqeqeq($range(1,3,!1),$ret_or_1)||(replacements=replacements.$first(3),suffix="…"),parts=$send(replacements,"map",[],(function($mlhs_tmp1){var $a,range=nil,str=nil;return null==$mlhs_tmp1&&($mlhs_tmp1=nil),range=null==($a=$to_ary($mlhs_tmp1))[0]?nil:$a[0],str=null==$a[1]?nil:$a[1],$truthy(str["$empty?"]())?"-"+range.$to_range():$eqeq(range.$size(),0)?"+"+str.$inspect()+"@"+range.$begin_pos():"^"+str.$inspect()+"@"+range.$to_range()}),{$$arity:1,$$has_top_level_mlhs_arg:!0}),$truthy(suffix)&&parts["$<<"](suffix),parts.$join(", "))}),0),$const_set($nesting[0],"ACTIONS",["accept","warn","raise"].$freeze()),$def(self,"$check_policy_validity",(function(){var invalid=nil;return invalid=$rb_minus(this.policy.$values(),$$("ACTIONS")),$truthy(invalid["$empty?"]())?nil:this.$raise($$("ArgumentError"),"Invalid policy: "+invalid.$join(", "))}),0),$def(self,"$combine",(function(range,attributes){var action;return range=this.$check_range_validity(range),action=$$$($$("TreeRewriter"),"Action").$new(range,this.enforcer,Opal.to_hash(attributes)),this.action_root=this.action_root.$combine(action),this}),2),$def(self,"$check_range_validity",(function(range){return($truthy($rb_lt(range.$begin_pos(),0))||$truthy($rb_gt(range.$end_pos(),this.source_buffer.$source().$size())))&&this.$raise($$("IndexError"),"The range "+range.$to_range()+" is outside the bounds of the source"),range}),1),$def(self,"$enforce_policy",(function $$enforce_policy(event){var values,$yield=$$enforce_policy.$$p||nil;return delete $$enforce_policy.$$p,$eqeq(this.policy["$[]"](event),"accept")?nil:$truthy(values=Opal.yieldX($yield,[]))?this.$trigger_policy(event,Opal.to_hash(values)):nil}),1),$const_set($nesting[0],"POLICY_TO_LEVEL",$hash2(["warn","raise"],{warn:"warning",raise:"error"}).$freeze()),$def(self,"$trigger_policy",(function(event,$kwargs){var range,conflict,arguments$,$a,action,$ret_or_1,diag=nil,highlights=nil;if(null==$kwargs)$kwargs=$hash2([],{});else if(!$kwargs.$$is_hash)throw Opal.ArgumentError.$new("expected kwargs");return null==(range=$kwargs.$$smap.range)&&(range=this.$raise()),null==(conflict=$kwargs.$$smap.conflict)&&(conflict=nil),arguments$=Opal.kwrestargs($kwargs,{range:!0,conflict:!0}),action=$truthy($ret_or_1=this.policy["$[]"](event))?$ret_or_1:"raise",diag=$$$($$("Parser"),"Diagnostic").$new($$("POLICY_TO_LEVEL")["$[]"](action),event,arguments$,range),this.diagnostics.$process(diag),$truthy(conflict)&&(range=null==($a=$to_ary(conflict))[0]?nil:$a[0],highlights=$slice.call($a,1),diag=$$$($$("Parser"),"Diagnostic").$new($$("POLICY_TO_LEVEL")["$[]"](action),event+"_conflict",arguments$,range,highlights),this.diagnostics.$process(diag)),$eqeq(action,"raise")?this.$raise($$$($$("Parser"),"ClobberingError"),"Parser::Source::TreeRewriter detected clobbering"):nil}),-2)}($nesting[0],0,$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/tree_rewriter/action"]=function(Opal){var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$module=Opal.module,$klass=Opal.klass,$hash2=Opal.hash2,$def=Opal.def,$truthy=Opal.truthy,$send=Opal.send,$not=Opal.not,$rb_plus=Opal.rb_plus,$eqeq=Opal.eqeq,$to_a=Opal.to_a,$rb_gt=Opal.rb_gt,$rb_minus=Opal.rb_minus,$rb_ge=Opal.rb_ge,$eqeqeq=Opal.eqeqeq,$rb_le=Opal.rb_le,$rb_lt=Opal.rb_lt,$neqeq=Opal.neqeq;return Opal.add_stubs("attr_reader,freeze,empty?,do_combine,==,<<,begin,concat,flat_map,to_proc,end,!,insert_before,insert_after,replacement,raise,insertion?,with,begin_pos,range,first,children,end_pos,last,new,+,map,moved,protected,swallow,class,merge,place_in_hierarchy,analyse_hierarchy,[],fuse_deletions,combine_children,inject,size,bsearch,bsearch_child_index,>,-,>=,===,<=>,<=,check_fusible,<,shift,pop,compact!,each,call,call_enforcer_for_merge,!=,select"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Source")].concat($parent_nesting);return function($base,$super){var self=$klass($base,null,"Action"),$proto=self.$$prototype;return $proto.insert_before=$proto.insert_after=$proto.children=$proto.replacement=$proto.range=$proto.enforcer=nil,self.$attr_reader("range","replacement","insert_before","insert_after"),$def(self,"$initialize",(function(range,enforcer,$kwargs){var insert_before,replacement,insert_after,children,$a;if(null==$kwargs)$kwargs=$hash2([],{});else if(!$kwargs.$$is_hash)throw Opal.ArgumentError.$new("expected kwargs");return null==(insert_before=$kwargs.$$smap.insert_before)&&(insert_before=""),null==(replacement=$kwargs.$$smap.replacement)&&(replacement=nil),null==(insert_after=$kwargs.$$smap.insert_after)&&(insert_after=""),null==(children=$kwargs.$$smap.children)&&(children=[]),$a=[range,enforcer,children.$freeze(),insert_before.$freeze(),replacement,insert_after.$freeze()],this.range=$a[0],this.enforcer=$a[1],this.children=$a[2],this.insert_before=$a[3],this.replacement=$a[4],this.insert_after=$a[5],this.$freeze()}),-3),$def(self,"$combine",(function(action){return $truthy(action["$empty?"]())?this:this.$do_combine(action)}),1),$def(self,"$empty?",(function(){var $ret_or_1,$ret_or_2=nil,$ret_or_3=nil;return $truthy($ret_or_1=$truthy($ret_or_2=$truthy($ret_or_3=this.insert_before["$empty?"]())?this.insert_after["$empty?"]():$ret_or_3)?this.children["$empty?"]():$ret_or_2)?$truthy($ret_or_2=this.replacement["$=="](nil))?$ret_or_2:$truthy($ret_or_3=this.replacement["$empty?"]())?this.range["$empty?"]():$ret_or_3:$ret_or_1}),0),$def(self,"$ordered_replacements",(function(){var reps=nil;return reps=[],$truthy(this.insert_before["$empty?"]())||reps["$<<"]([this.range.$begin(),this.insert_before]),$truthy(this.replacement)&&reps["$<<"]([this.range,this.replacement]),reps.$concat($send(this.children,"flat_map",[],"ordered_replacements".$to_proc())),$truthy(this.insert_after["$empty?"]())||reps["$<<"]([this.range.$end(),this.insert_after]),reps}),0),$def(self,"$nested_actions",(function(){var actions=nil;return actions=[],($not(this.insert_before["$empty?"]())||$not(this.insert_after["$empty?"]()))&&actions["$<<"](["wrap",this.range,this.insert_before,this.insert_after]),$truthy(this.replacement)&&actions["$<<"](["replace",this.range,this.replacement]),actions.$concat($send(this.children,"flat_map",[],"nested_actions".$to_proc()))}),0),$def(self,"$insertion?",(function(){var $ret_or_1,$ret_or_2=nil;return $truthy($ret_or_1=$truthy($ret_or_2=this.$insert_before()["$empty?"]()["$!"]())?$ret_or_2:this.$insert_after()["$empty?"]()["$!"]())?$ret_or_1:$truthy($ret_or_2=this.$replacement())?this.$replacement()["$empty?"]()["$!"]():$ret_or_2}),0),$def(self,"$contract",(function(){var range;return $truthy(this["$empty?"]())&&this.$raise("Empty actions can not be 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family=this.$analyse_hierarchy(action),$truthy(family["$[]"]("fusible"))?this.$fuse_deletions(action,family["$[]"]("fusible"),[].concat($to_a(family["$[]"]("sibbling_left"))).concat($to_a(family["$[]"]("child"))).concat($to_a(family["$[]"]("sibbling_right")))):(extra_sibbling=$truthy(family["$[]"]("parent"))?family["$[]"]("parent").$do_combine(action):$truthy(family["$[]"]("child"))?action.$with($hash2(["children","enforcer"],{children:family["$[]"]("child"),enforcer:this.enforcer})).$combine_children(action.$children()):action,this.$with($hash2(["children"],{children:[].concat($to_a(family["$[]"]("sibbling_left"))).concat([extra_sibbling]).concat($to_a(family["$[]"]("sibbling_right")))})))}),1),$def(self,"$combine_children",(function(more_children){return $send(more_children,"inject",[this],(function(parent,new_child){return 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null==self.children&&(self.children=nil),null==i&&(i=nil),Opal.yield1($yield,self.children["$[]"](i))}),{$$arity:1,$$s:this}))?$ret_or_1:size}),-1),$def(self,"$analyse_hierarchy",(function(action){var start,center,$ret_or_1,r=nil,left_index=nil,right_index=nil,parent=nil,overlap_left=nil,overlap_right=nil,contained=nil,fusible=nil;return r=action.$range(),left_index=$send(this,"bsearch_child_index",[],(function(child){return null==child&&(child=nil),$rb_gt(child.$range().$end_pos(),r.$begin_pos())}),1),start=$eqeq(left_index,0)?0:$rb_minus(left_index,1),right_index=$send(this,"bsearch_child_index",[start],(function(child){return null==child&&(child=nil),$rb_ge(child.$range().$begin_pos(),r.$end_pos())}),1),center=$rb_minus(right_index,left_index),$eqeqeq(0,$ret_or_1=center)||($eqeqeq(-1,$ret_or_1)?(left_index=$rb_minus(left_index,1),right_index=$rb_plus(right_index,1),parent=this.children["$[]"](left_index)):(overlap_left=this.children["$[]"](left_index).$range().$begin_pos()["$<=>"](r.$begin_pos()),overlap_right=this.children["$[]"]($rb_minus(right_index,1)).$range().$end_pos()["$<=>"](r.$end_pos()),$eqeq(center,1)&&$truthy($rb_le(overlap_left,0))&&$truthy($rb_ge(overlap_right,0))?parent=this.children["$[]"](left_index):(contained=this.children["$[]"](Opal.Range.$new(left_index,right_index,!0)),fusible=this.$check_fusible(action,$truthy($rb_lt(overlap_left,0))?contained.$shift():nil,$truthy($rb_gt(overlap_right,0))?contained.$pop():nil)))),$hash2(["parent","sibbling_left","sibbling_right","fusible","child"],{parent:parent,sibbling_left:this.children["$[]"](Opal.Range.$new(0,left_index,!0)),sibbling_right:this.children["$[]"](Opal.Range.$new(right_index,this.children.$size(),!0)),fusible:fusible,child:contained})}),1),$def(self,"$check_fusible",(function(action,$a){var fusible,self=this;return(fusible=Opal.slice.call(arguments,1))["$compact!"](),$truthy(fusible["$empty?"]())?nil:($send(fusible,"each",[],(function $$9(child){var kind,self=null==$$9.$$s?this:$$9.$$s;return null==self.enforcer&&(self.enforcer=nil),null==child&&(child=nil),kind=$truthy(action["$insertion?"]())||$truthy(child["$insertion?"]())?"crossing_insertions":"crossing_deletions",$send(self.enforcer,"call",[kind],(function(){return $hash2(["range","conflict"],{range:action.$range(),conflict:child.$range()})}),0)}),{$$arity:1,$$s:self}),fusible)}),-2),$def(self,"$merge",(function(action){var $ret_or_1;return this.$call_enforcer_for_merge(action),this.$with($hash2(["insert_before","replacement","insert_after"],{insert_before:""+action.$insert_before()+this.$insert_before(),replacement:$truthy($ret_or_1=action.$replacement())?$ret_or_1:this.replacement,insert_after:""+this.$insert_after()+action.$insert_after()})).$combine_children(action.$children())}),1),$def(self,"$call_enforcer_for_merge",(function(action){return $send(this.enforcer,"call",["different_replacements"],(function $$11(){var self=null==$$11.$$s?this:$$11.$$s;return null==self.replacement&&(self.replacement=nil),null==self.range&&(self.range=nil),$truthy(self.replacement)&&$truthy(action.$replacement())&&$neqeq(self.replacement,action.$replacement())?$hash2(["range","replacement","other_replacement"],{range:self.range,replacement:action.$replacement(),other_replacement:self.replacement}):nil}),{$$arity:0,$$s:this})}),1),$def(self,"$swallow",(function(children){return $send(this.enforcer,"call",["swallowed_insertions"],(function $$12(){var self=null==$$12.$$s?this:$$12.$$s,insertions=nil;return null==self.range&&(self.range=nil),insertions=$send(children,"select",[],"insertion?".$to_proc()),$truthy(insertions["$empty?"]())?nil:$hash2(["range","conflict"],{range:self.range,conflict:$send(insertions,"map",[],"range".$to_proc())})}),{$$arity:0,$$s:this}),[]}),1)}(Opal.$r($nesting)("TreeRewriter"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map"]=function(Opal){var $nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$def=Opal.def,$send2=Opal.send2,$find_super=Opal.find_super,$send=Opal.send,$truthy=Opal.truthy,$hash2=Opal.hash2,$eqeq=Opal.eqeq,$range=Opal.range,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus;return Opal.add_stubs("attr_reader,freeze,line,alias_method,column,last_line,last_column,with,update_expression,==,class,reduce,map,instance_variables,instance_variable_get,send,inject,to_sym,[],[]=,-,protected,tap,dup,to_proc"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$parent_nesting){return function($base,$super){var self=$klass($base,null,"Map"),$proto=self.$$prototype;return $proto.node=$proto.expression=nil,self.$attr_reader("node"),self.$attr_reader("expression"),$def(self,"$initialize",(function(expression){return this.expression=expression}),1),$def(self,"$initialize_copy",(function $$initialize_copy(other){var $yield=$$initialize_copy.$$p||nil;return delete $$initialize_copy.$$p,$send2(this,$find_super(this,"initialize_copy",$$initialize_copy,!1,!0),"initialize_copy",[other],$yield),this.node=nil}),1),$def(self,"$node=",(function(node){return this.node=node,this.$freeze(),this.node}),1),$def(self,"$line",(function(){return this.expression.$line()}),0),self.$alias_method("first_line","line"),$def(self,"$column",(function(){return this.expression.$column()}),0),$def(self,"$last_line",(function(){return this.expression.$last_line()}),0),$def(self,"$last_column",(function(){return this.expression.$last_column()}),0),$def(self,"$with_expression",(function(expression_l){return $send(this,"with",[],(function(map){return null==map&&(map=nil),map.$update_expression(expression_l)}),1)}),1),$def(self,"$==",(function(other){var $ret_or_1;return $truthy($ret_or_1=other.$class()["$=="](this.$class()))?$send(this.$instance_variables(),"map",[],(function $$4(ivar){return null==ivar&&(ivar=nil),(null==$$4.$$s?this:$$4.$$s).$instance_variable_get(ivar)["$=="](other.$send("instance_variable_get",ivar))}),{$$arity:1,$$s:this}).$reduce("&"):$ret_or_1}),1),$def(self,"$to_hash",(function(){return $send(this.$instance_variables(),"inject",[$hash2([],{})],(function $$5(hash,ivar){var $writer,self=null==$$5.$$s?this:$$5.$$s;return null==hash&&(hash=nil),null==ivar&&(ivar=nil),$eqeq(ivar.$to_sym(),"@node")||($writer=[ivar["$[]"]($range(1,-1,!1)).$to_sym(),self.$instance_variable_get(ivar)],$send(hash,"[]=",$to_a($writer)),$rb_minus($writer.length,1)),hash}),{$$arity:2,$$s:this})}),0),self.$protected(),$def(self,"$with",(function $Map_with$6(){var block=$Map_with$6.$$p||nil;return delete $Map_with$6.$$p,$send(this.$dup(),"tap",[],block.$to_proc())}),0),$def(self,"$update_expression",(function(expression_l){return this.expression=expression_l}),1)}([$module($base,"Source")].concat($parent_nesting)[0])}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/operator"]=function(Opal){var $nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$def=Opal.def;return Opal.add_stubs("attr_reader"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Source")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"Operator");return self.$attr_reader("operator"),$def(self,"$initialize",(function $$initialize(operator,expression){return delete $$initialize.$$p,this.operator=operator,$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[expression],null)}),2)}($$("Map"),$$("Map"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/collection"]=function(Opal){var $nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$def=Opal.def;return Opal.add_stubs("attr_reader"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Source")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"Collection");return self.$attr_reader("begin"),self.$attr_reader("end"),$def(self,"$initialize",(function $$initialize(begin_l,end_l,expression_l){var $a;return delete $$initialize.$$p,$a=[begin_l,end_l],this.begin=$a[0],this.end=$a[1],$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[expression_l],null)}),3)}($$("Map"),$$("Map"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/constant"]=function(Opal){var $nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$def=Opal.def,$send=Opal.send;return Opal.add_stubs("attr_reader,with,update_operator,protected"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Source")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"Constant");return self.$attr_reader("double_colon"),self.$attr_reader("name"),self.$attr_reader("operator"),$def(self,"$initialize",(function $$initialize(double_colon,name,expression){var $a;return delete $$initialize.$$p,$a=[double_colon,name],this.double_colon=$a[0],this.name=$a[1],$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[expression],null)}),3),$def(self,"$with_operator",(function(operator_l){return $send(this,"with",[],(function(map){return null==map&&(map=nil),map.$update_operator(operator_l)}),1)}),1),self.$protected(),$def(self,"$update_operator",(function(operator_l){return this.operator=operator_l}),1)}($$("Map"),$$("Map"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/variable"]=function(Opal){var $nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$def=Opal.def,$send=Opal.send;return Opal.add_stubs("attr_reader,with,update_operator,protected"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Source")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"Variable");return self.$attr_reader("name"),self.$attr_reader("operator"),$def(self,"$initialize",(function $$initialize(name_l,expression_l){return delete $$initialize.$$p,null==expression_l&&(expression_l=name_l),this.name=name_l,$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[expression_l],null)}),-2),$def(self,"$with_operator",(function(operator_l){return $send(this,"with",[],(function(map){return null==map&&(map=nil),map.$update_operator(operator_l)}),1)}),1),self.$protected(),$def(self,"$update_operator",(function(operator_l){return this.operator=operator_l}),1)}($$("Map"),$$("Map"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/keyword"]=function(Opal){var $nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$def=Opal.def;return Opal.add_stubs("attr_reader"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Source")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"Keyword");return self.$attr_reader("keyword"),self.$attr_reader("begin"),self.$attr_reader("end"),$def(self,"$initialize",(function $$initialize(keyword_l,begin_l,end_l,expression_l){var $a;return delete $$initialize.$$p,this.keyword=keyword_l,$a=[begin_l,end_l],this.begin=$a[0],this.end=$a[1],$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[expression_l],null)}),4)}($$("Map"),$$("Map"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/definition"]=function(Opal){var $nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$def=Opal.def;return Opal.add_stubs("attr_reader,join"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Source")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"Definition"),$proto=self.$$prototype;return $proto.keyword=$proto.end=nil,self.$attr_reader("keyword"),self.$attr_reader("operator"),self.$attr_reader("name"),self.$attr_reader("end"),$def(self,"$initialize",(function $$initialize(keyword_l,operator_l,name_l,end_l){return delete $$initialize.$$p,this.keyword=keyword_l,this.operator=operator_l,this.name=name_l,this.end=end_l,$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[this.keyword.$join(this.end)],null)}),4)}($$("Map"),$$("Map"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/method_definition"]=function(Opal){var $nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$truthy=Opal.truthy,$def=Opal.def;return Opal.add_stubs("attr_reader,join"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Source")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"MethodDefinition");return self.$$prototype.keyword=nil,self.$attr_reader("keyword"),self.$attr_reader("operator"),self.$attr_reader("name"),self.$attr_reader("end"),self.$attr_reader("assignment"),$def(self,"$initialize",(function $$initialize(keyword_l,operator_l,name_l,end_l,assignment_l,body_l){var $ret_or_1;return delete $$initialize.$$p,this.keyword=keyword_l,this.operator=operator_l,this.name=name_l,this.end=end_l,this.assignment=assignment_l,$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[this.keyword.$join($truthy($ret_or_1=end_l)?$ret_or_1:body_l)],null)}),6)}($$("Map"),$$("Map"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/send"]=function(Opal){var $nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$def=Opal.def,$send=Opal.send;return Opal.add_stubs("attr_reader,with,update_operator,protected"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Source")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"Send");return self.$attr_reader("dot"),self.$attr_reader("selector"),self.$attr_reader("operator"),self.$attr_reader("begin"),self.$attr_reader("end"),$def(self,"$initialize",(function $$initialize(dot_l,selector_l,begin_l,end_l,expression_l){var $a;return delete $$initialize.$$p,this.dot=dot_l,this.selector=selector_l,$a=[begin_l,end_l],this.begin=$a[0],this.end=$a[1],$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[expression_l],null)}),5),$def(self,"$with_operator",(function(operator_l){return $send(this,"with",[],(function(map){return null==map&&(map=nil),map.$update_operator(operator_l)}),1)}),1),self.$protected(),$def(self,"$update_operator",(function(operator_l){return this.operator=operator_l}),1)}($$("Map"),$$("Map"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/index"]=function(Opal){var $nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$def=Opal.def,$send=Opal.send;return Opal.add_stubs("attr_reader,with,update_operator,protected"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Source")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"Index");return self.$attr_reader("begin"),self.$attr_reader("end"),self.$attr_reader("operator"),$def(self,"$initialize",(function $$initialize(begin_l,end_l,expression_l){var $a;return delete $$initialize.$$p,$a=[begin_l,end_l],this.begin=$a[0],this.end=$a[1],this.operator=nil,$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[expression_l],null)}),3),$def(self,"$with_operator",(function(operator_l){return $send(this,"with",[],(function(map){return null==map&&(map=nil),map.$update_operator(operator_l)}),1)}),1),self.$protected(),$def(self,"$update_operator",(function(operator_l){return this.operator=operator_l}),1)}($$("Map"),$$("Map"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/condition"]=function(Opal){var $nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$def=Opal.def;return Opal.add_stubs("attr_reader"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Source")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"Condition");return self.$attr_reader("keyword"),self.$attr_reader("begin"),self.$attr_reader("else"),self.$attr_reader("end"),$def(self,"$initialize",(function $$initialize(keyword_l,begin_l,else_l,end_l,expression_l){var $a;return delete $$initialize.$$p,this.keyword=keyword_l,$a=[begin_l,else_l,end_l],this.begin=$a[0],this.else=$a[1],this.end=$a[2],$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[expression_l],null)}),5)}($$("Map"),$$("Map"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/ternary"]=function(Opal){var $nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$def=Opal.def;return Opal.add_stubs("attr_reader"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Source")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"Ternary");return self.$attr_reader("question"),self.$attr_reader("colon"),$def(self,"$initialize",(function $$initialize(question_l,colon_l,expression_l){var $a;return delete $$initialize.$$p,$a=[question_l,colon_l],this.question=$a[0],this.colon=$a[1],$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[expression_l],null)}),3)}($$("Map"),$$("Map"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/for"]=function(Opal){var $nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$def=Opal.def;return Opal.add_stubs("attr_reader"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Source")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"For");return self.$attr_reader("keyword","in"),self.$attr_reader("begin","end"),$def(self,"$initialize",(function $$initialize(keyword_l,in_l,begin_l,end_l,expression_l){var $a;return delete $$initialize.$$p,$a=[keyword_l,in_l],this.keyword=$a[0],this.in=$a[1],$a=[begin_l,end_l],this.begin=$a[0],this.end=$a[1],$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[expression_l],null)}),5)}($$("Map"),$$("Map"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/rescue_body"]=function(Opal){var $nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$def=Opal.def;return Opal.add_stubs("attr_reader"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Source")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"RescueBody");return self.$attr_reader("keyword"),self.$attr_reader("assoc"),self.$attr_reader("begin"),$def(self,"$initialize",(function $$initialize(keyword_l,assoc_l,begin_l,expression_l){return delete $$initialize.$$p,this.keyword=keyword_l,this.assoc=assoc_l,this.begin=begin_l,$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[expression_l],null)}),4)}($$("Map"),$$("Map"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/heredoc"]=function(Opal){var $nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$def=Opal.def;return Opal.add_stubs("attr_reader"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Source")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"Heredoc");return self.$attr_reader("heredoc_body"),self.$attr_reader("heredoc_end"),$def(self,"$initialize",(function $$initialize(begin_l,body_l,end_l){return delete $$initialize.$$p,this.heredoc_body=body_l,this.heredoc_end=end_l,$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[begin_l],null)}),3)}($$("Map"),$$("Map"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/objc_kwarg"]=function(Opal){var $nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$def=Opal.def;return Opal.add_stubs("attr_reader"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Source")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"ObjcKwarg");return self.$attr_reader("keyword"),self.$attr_reader("operator"),self.$attr_reader("argument"),$def(self,"$initialize",(function $$initialize(keyword_l,operator_l,argument_l,expression_l){var $a;return delete $$initialize.$$p,$a=[keyword_l,operator_l,argument_l],this.keyword=$a[0],this.operator=$a[1],this.argument=$a[2],$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[expression_l],null)}),4)}($$("Map"),$$("Map"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/syntax_error"]=function(Opal){var $nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$def=Opal.def;return Opal.add_stubs("attr_reader,message"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"SyntaxError");return self.$attr_reader("diagnostic"),$def(self,"$initialize",(function $$initialize(diagnostic){return delete $$initialize.$$p,this.diagnostic=diagnostic,$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[diagnostic.$message()],null)}),1)}($nesting[0],$$("StandardError"))}($nesting[0],$nesting)},Opal.modules["parser/clobbering_error"]=function(Opal){var $nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass;return function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting),$$=Opal.$r($nesting);return $klass($nesting[0],$$("RuntimeError"),"ClobberingError"),nil}($nesting[0],$nesting)},Opal.modules["parser/diagnostic"]=function(Opal){var $nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$const_set=Opal.const_set,$truthy=Opal.truthy,$hash2=Opal.hash2,$def=Opal.def,$eqeq=Opal.eqeq,$rb_plus=Opal.rb_plus,$rb_minus=Opal.rb_minus,$to_ary=Opal.to_ary,$rb_gt=Opal.rb_gt,$rb_times=Opal.rb_times,$send=Opal.send,$to_a=Opal.to_a,$rb_ge=Opal.rb_ge,$not=Opal.not,$neqeq=Opal.neqeq;return Opal.add_stubs("freeze,attr_reader,include?,raise,join,inspect,dup,compile,is?,==,line,last_line,+,message,render_line,first_line_only,last_line_only,-,source_buffer,decompose_position,end_pos,>,private,source_line,*,length,each,line_range,intersect,column_range,size,[]=,>=,!,map,name,!=,resize,=~,source,adjust"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$super,$parent_nesting){var self=$klass($base,null,"Diagnostic"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;return $proto.reason=$proto.arguments=$proto.location=$proto.level=$proto.highlights=nil,$const_set($nesting[0],"LEVELS",["note","warning","error","fatal"].$freeze()),self.$attr_reader("level","reason","arguments"),self.$attr_reader("location","highlights"),$def(self,"$initialize",(function(level,reason,arguments$,location,highlights){var $ret_or_1;return null==highlights&&(highlights=[]),$truthy($$("LEVELS")["$include?"](level))||this.$raise($$("ArgumentError"),"Diagnostic#level must be one of "+$$("LEVELS").$join(", ")+"; "+level.$inspect()+" provided."),$truthy(location)||this.$raise("Expected a location"),this.level=level,this.reason=reason,this.arguments=($truthy($ret_or_1=arguments$)?$ret_or_1:$hash2([],{})).$dup().$freeze(),this.location=location,this.highlights=highlights.$dup().$freeze(),this.$freeze()}),-5),$def(self,"$message",(function(){return $$("Messages").$compile(this.reason,this.arguments)}),0),$def(self,"$render",(function(){var $a,$b,first_line=nil,last_line=nil,num_lines=nil,last_lineno=nil,last_column=nil;return $eqeq(this.location.$line(),this.location.$last_line())||$truthy(this.location["$is?"]("\n"))?$rb_plus([this.location+": "+this.level+": 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null==highlight&&(highlight=nil),line_range=range.$source_buffer().$line_range(range.$line()),$truthy(highlight=highlight.$intersect(line_range))?($writer=[highlight.$column_range(),$rb_times("~",highlight.$size())],$send(highlight_line,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]):nil}),1),$truthy(range["$is?"]("\n"))?highlight_line=$rb_plus(highlight_line,"^"):$not(range_end)&&$truthy($rb_ge(range.$size(),1))?($writer=[range.$column_range(),$rb_plus("^",$rb_times("~",$rb_minus(range.$size(),1)))],$send(highlight_line,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]):($writer=[range.$column_range(),$rb_times("~",range.$size())],$send(highlight_line,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]),$truthy(ellipsis)&&(highlight_line=$rb_plus(highlight_line,"...")),$send([source_line,highlight_line],"map",[],(function(line){return null==line&&(line=nil),range.$source_buffer().$name()+":"+range.$line()+": "+line}),1)}),-2),$def(self,"$first_line_only",(function(range){return $neqeq(range.$line(),range.$last_line())?range.$resize(range.$source()["$=~"](/\n/)):range}),1),$def(self,"$last_line_only",(function(range){return $neqeq(range.$line(),range.$last_line())?range.$adjust($hash2(["begin_pos"],{begin_pos:range.$source()["$=~"](/[^\n]*$/)})):range}),1)}($nesting[0],0,$nesting)}($nesting[0],$nesting)},Opal.modules["parser/diagnostic/engine"]=function(Opal){var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$module=Opal.module,$klass=Opal.klass,$def=Opal.def,$truthy=Opal.truthy;return Opal.add_stubs("attr_accessor,ignore?,call,raise?,raise,protected,==,level"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$super,$parent_nesting){var self=$klass($base,null,"Engine"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;return $proto.consumer=$proto.ignore_warnings=$proto.all_errors_are_fatal=nil,self.$attr_accessor("consumer"),self.$attr_accessor("all_errors_are_fatal"),self.$attr_accessor("ignore_warnings"),$def(self,"$initialize",(function(consumer){return null==consumer&&(consumer=nil),this.consumer=consumer,this.all_errors_are_fatal=!1,this.ignore_warnings=!1}),-1),$def(self,"$process",(function(diagnostic){return $truthy(this["$ignore?"](diagnostic))||$truthy(this.consumer)&&this.consumer.$call(diagnostic),$truthy(this["$raise?"](diagnostic))&&this.$raise($$$($$("Parser"),"SyntaxError"),diagnostic),this}),1),self.$protected(),$def(self,"$ignore?",(function(diagnostic){var $ret_or_1;return $truthy($ret_or_1=this.ignore_warnings)?diagnostic.$level()["$=="]("warning"):$ret_or_1}),1),$def(self,"$raise?",(function(diagnostic){var $ret_or_1,$ret_or_2;return $truthy($ret_or_1=$truthy($ret_or_2=this.all_errors_are_fatal)?diagnostic.$level()["$=="]("error"):$ret_or_2)?$ret_or_1:diagnostic.$level()["$=="]("fatal")}),1)}(Opal.$r($nesting)("Diagnostic"),0,$nesting)}($nesting[0],$nesting)},Opal.modules["parser/static_environment"]=function(Opal){var $nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$const_set=Opal.const_set,$def=Opal.def;return Opal.add_stubs("reset,[],push,dup,pop,add,to_sym,include?,declare,declared?,empty?"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$super,$parent_nesting){var self=$klass($base,null,"StaticEnvironment"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;return $proto.stack=$proto.variables=nil,$const_set($nesting[0],"FORWARD_ARGS","FORWARD_ARGS"),$const_set($nesting[0],"ANONYMOUS_BLOCKARG","ANONYMOUS_BLOCKARG"),$def(self,"$initialize",(function(){return 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this["$declared?"]($$("ANONYMOUS_BLOCKARG"))}),0),$def(self,"$empty?",(function(){return this.stack["$empty?"]()}),0)}($nesting[0],0,$nesting)}($nesting[0],$nesting)},Opal.modules["parser/lexer"]=function(Opal){var $nesting=[],$$=Opal.$r($nesting),nil=Opal.nil,$$$=Opal.$$$,$klass=Opal.klass,$send=Opal.send,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$const_set=Opal.const_set,$hash=Opal.hash,$def=Opal.def,$truthy=Opal.truthy,$eqeq=Opal.eqeq,$hash2=Opal.hash2,$rb_plus=Opal.rb_plus,$to_ary=Opal.to_ary,$rb_le=Opal.rb_le,$eqeqeq=Opal.eqeqeq,$rb_gt=Opal.rb_gt,$neqeq=Opal.neqeq,$not=Opal.not,$rb_ge=Opal.rb_ge,$range=Opal.range,$rb_lt=Opal.rb_lt,$gvars=Opal.gvars;return Opal.add_stubs("attr_accessor,private,_lex_trans_keys=,-,_lex_key_spans=,_lex_index_offsets=,_lex_indicies=,_lex_trans_targs=,_lex_trans_actions=,_lex_to_state_actions=,_lex_from_state_actions=,_lex_eof_trans=,lex_start=,lex_error=,lex_en_interp_words=,lex_en_interp_string=,lex_en_plain_words=,lex_en_plain_string=,lex_en_interp_backslash_delimited=,lex_en_plain_backslash_delimited=,lex_en_interp_backslash_delimited_words=,lex_en_plain_backslash_delimited_words=,lex_en_regexp_modifiers=,lex_en_expr_variable=,lex_en_expr_fname=,lex_en_expr_endfn=,lex_en_expr_dot=,lex_en_expr_arg=,lex_en_expr_cmdarg=,lex_en_expr_endarg=,lex_en_expr_mid=,lex_en_expr_beg=,lex_en_expr_labelarg=,lex_en_expr_value=,lex_en_expr_end=,lex_en_leading_dot=,lex_en_line_comment=,lex_en_line_begin=,freeze,ord,union,chars,attr_reader,reset,lex_en_line_begin,class,new,source,==,encoding,unpack,[],lex_en_expr_dot,lex_en_expr_fname,lex_en_expr_value,lex_en_expr_beg,lex_en_expr_mid,lex_en_expr_arg,lex_en_expr_cmdarg,lex_en_expr_end,lex_en_expr_endarg,lex_en_expr_endfn,lex_en_expr_labelarg,lex_en_interp_string,lex_en_interp_words,lex_en_plain_string,fetch,invert,push,count,pop,any?,shift,send,+,size,<=,===,<<,>,!=,emit_comment,tok,literal,flush_string,extend_content,emit,heredoc?,saved_herebody_s=,start_interp_brace,[]=,diagnostic,range,str_s,gsub,version?,nest_and_try_closing,heredoc_e,pop_literal,infer_indent_level,!,eof_codepoint?,words?,extend_space,extend_string,active?,>=,slice,start_with?,chr,munge_escape?,match,regexp?,squiggly_heredoc?,supports_line_continuation_via_slash?,include?,scan,join,=~,to_i,stack_pop,emit_table,push_literal,in_argdef,arg_or_cmdarg,<,emit_do,declared?,nil?,last,getbyte,inspect,end_with?,empty?,index,call,Float,to_f,length,lambda,Rational,Complex,each,encode_escape,%,in_kwarg,end_interp_brace_and_try_closing,lexpop,saved_herebody_s,next_state_for_literal,rstrip,&,|,lex_error,protected,force_encoding,process,backslash_delimited?,interpolate?,lex_en_interp_backslash_delimited_words,lex_en_plain_backslash_delimited_words,lex_en_plain_words,lex_en_interp_backslash_delimited,lex_en_plain_backslash_delimited,dedent_level,type,lex_en_regexp_modifiers,upcase"),function($base,$super,$parent_nesting){var 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if($eqeqeq(117,$ret_or_1))self.escape_s=p,self.escape=nil;else if($eqeqeq(30,$ret_or_1))$truthy(self.herebody_s)&&(p=self.herebody_s,self.herebody_s=nil);else if($eqeqeq(60,$ret_or_1))self.sharp_s=$rb_minus(p,1);else if($eqeqeq(64,$ret_or_1))self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p);else if($eqeqeq(310,$ret_or_1))tm=p;else if($eqeqeq(37,$ret_or_1))tm=p;else if($eqeqeq(39,$ret_or_1))tm=p;else if($eqeqeq(41,$ret_or_1))tm=p;else if($eqeqeq(71,$ret_or_1))heredoc_e=p;else if($eqeqeq(349,$ret_or_1))tm=$rb_minus(p,1),diag_msg="ivar_name";else if($eqeqeq(352,$ret_or_1))tm=$rb_minus(p,2),diag_msg="cvar_name";else if($eqeqeq(360,$ret_or_1))self.escape=nil;else if($eqeqeq(392,$ret_or_1))tm=p;else if($eqeqeq(308,$ret_or_1))ident_tok=self.$tok(),ident_ts=self.ts,ident_te=self.te;else if($eqeqeq(479,$ret_or_1))self.num_base=16,self.num_digits_s=p;else if($eqeqeq(473,$ret_or_1))self.num_base=10,self.num_digits_s=p;else if($eqeqeq(476,$ret_or_1))self.num_base=8,self.num_digits_s=p;else if($eqeqeq(470,$ret_or_1))self.num_base=2,self.num_digits_s=p;else if($eqeqeq(485,$ret_or_1))self.num_base=10,self.num_digits_s=self.ts;else if($eqeqeq(447,$ret_or_1))self.num_base=8,self.num_digits_s=self.ts;else if($eqeqeq(462,$ret_or_1))self.num_suffix_s=p;else if($eqeqeq(455,$ret_or_1))self.num_suffix_s=p;else if($eqeqeq(452,$ret_or_1))self.num_suffix_s=p;else if($eqeqeq(89,$ret_or_1))tm=p;else if($eqeqeq(7,$ret_or_1))self.te=$rb_plus(p,1);else{if($eqeqeq(113,$ret_or_1)){self.te=$rb_plus(p,1),(current_literal=self.$literal()).$flush_string(),current_literal.$extend_content(),self.$emit("tSTRING_DBEG","#{".$freeze()),$truthy(current_literal["$heredoc?"]())&&($writer=[self.herebody_s],$send(current_literal,"saved_herebody_s=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],self.herebody_s=nil),current_literal.$start_interp_brace(),self.command_start=!0,self.cs=802,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(5,$ret_or_1)){self.te=$rb_plus(p,1),(current_literal=self.$literal()).$flush_string(),current_literal.$extend_content(),self.$emit("tSTRING_DVAR",nil,self.ts,$rb_plus(self.ts,1)),p=self.ts,$writer=[self.top,self.cs],$send(self.stack,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],self.top=$rb_plus(self.top,1),self.cs=347,_goto_level=20;continue}if($eqeqeq(109,$ret_or_1)){if(self.te=$rb_plus(p,1),current_literal=self.$literal(),$eqeq(self.te,pe)&&self.$diagnostic("fatal","string_eof",nil,self.$range(current_literal.$str_s(),$rb_plus(current_literal.$str_s(),1))),$truthy(current_literal["$heredoc?"]())){if(line=self.$tok(self.herebody_s,self.ts).$gsub(/\r+$/,"".$freeze()),$truthy(self["$version?"](18,19,20))&&(line=line.$gsub(/\r.*$/,"".$freeze())),$truthy(current_literal.$nest_and_try_closing(line,self.herebody_s,self.ts))){self.herebody_s=self.te,p=$rb_minus(current_literal.$heredoc_e(),1),self.cs=self.$pop_literal(),p=$rb_plus(p,1),_goto_level=40;continue}current_literal.$infer_indent_level(line),self.herebody_s=self.te}else{if($truthy(current_literal.$nest_and_try_closing(self.$tok(),self.ts,self.te))){self.cs=self.$pop_literal(),p=$rb_plus(p,1),_goto_level=40;continue}$truthy(self.herebody_s)&&(p=$rb_minus(self.herebody_s,1),self.herebody_s=nil)}$truthy(current_literal["$words?"]())&&$not(self["$eof_codepoint?"](self.source_pts["$[]"](p)))?current_literal.$extend_space(self.ts,self.te):(current_literal.$extend_string(self.$tok(),self.ts,self.te),current_literal.$flush_string())}else if($eqeqeq(108,$ret_or_1)){if(self.te=$rb_plus(p,1),string=self.$tok(),$truthy($rb_ge(self.version,22))&&$not(self.cond["$active?"]())&&(lookahead=self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te,2),!0))),current_literal=self.$literal(),$not(current_literal["$heredoc?"]())&&$truthy(token=current_literal.$nest_and_try_closing(string,self.ts,self.te,lookahead))){$eqeq(token["$[]"](0),"tLABEL_END")?(p=$rb_plus(p,1),self.$pop_literal(),self.cs=795):self.cs=self.$pop_literal(),p=$rb_plus(p,1),_goto_level=40;continue}current_literal.$extend_string(string,self.ts,self.te)}else if($eqeqeq(115,$ret_or_1))self.te=p,p=$rb_minus(p,1),$truthy($rb_ge(self.version,27))?self.$literal().$extend_string(self.$tok(),self.ts,self.te):(message=$truthy(self.$tok()["$start_with?"]("#@@"))?"cvar_name":"ivar_name",self.$diagnostic("error",message,$hash2(["name"],{name:self.$tok($rb_plus(self.ts,1),self.te)}),self.$range($rb_plus(self.ts,1),self.te)));else{if($eqeqeq(114,$ret_or_1)){self.te=p,p=$rb_minus(p,1),(current_literal=self.$literal()).$flush_string(),current_literal.$extend_content(),self.$emit("tSTRING_DVAR",nil,self.ts,$rb_plus(self.ts,1)),p=self.ts,$writer=[self.top,self.cs],$send(self.stack,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],self.top=$rb_plus(self.top,1),self.cs=347,_goto_level=20;continue}if($eqeqeq(111,$ret_or_1))self.te=p,p=$rb_minus(p,1),self.$literal().$extend_space(self.ts,self.te);else if($eqeqeq(112,$ret_or_1)){if(self.te=p,p=$rb_minus(p,1),string=self.$tok(),$truthy($rb_ge(self.version,22))&&$not(self.cond["$active?"]())&&(lookahead=self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te,2),!0))),current_literal=self.$literal(),$not(current_literal["$heredoc?"]())&&$truthy(token=current_literal.$nest_and_try_closing(string,self.ts,self.te,lookahead))){$eqeq(token["$[]"](0),"tLABEL_END")?(p=$rb_plus(p,1),self.$pop_literal(),self.cs=795):self.cs=self.$pop_literal(),p=$rb_plus(p,1),_goto_level=40;continue}current_literal.$extend_string(string,self.ts,self.te)}else if($eqeqeq(6,$ret_or_1))p=$rb_minus(self.te,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(4,$ret_or_1)){if(p=$rb_minus(self.te,1),string=self.$tok(),$truthy($rb_ge(self.version,22))&&$not(self.cond["$active?"]())&&(lookahead=self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te,2),!0))),current_literal=self.$literal(),$not(current_literal["$heredoc?"]())&&$truthy(token=current_literal.$nest_and_try_closing(string,self.ts,self.te,lookahead))){$eqeq(token["$[]"](0),"tLABEL_END")?(p=$rb_plus(p,1),self.$pop_literal(),self.cs=795):self.cs=self.$pop_literal(),p=$rb_plus(p,1),_goto_level=40;continue}current_literal.$extend_string(string,self.ts,self.te)}else{if($eqeqeq(145,$ret_or_1)){self.te=$rb_plus(p,1),(current_literal=self.$literal()).$flush_string(),current_literal.$extend_content(),self.$emit("tSTRING_DBEG","#{".$freeze()),$truthy(current_literal["$heredoc?"]())&&($writer=[self.herebody_s],$send(current_literal,"saved_herebody_s=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],self.herebody_s=nil),current_literal.$start_interp_brace(),self.command_start=!0,self.cs=802,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(10,$ret_or_1)){self.te=$rb_plus(p,1),(current_literal=self.$literal()).$flush_string(),current_literal.$extend_content(),self.$emit("tSTRING_DVAR",nil,self.ts,$rb_plus(self.ts,1)),p=self.ts,$writer=[self.top,self.cs],$send(self.stack,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],self.top=$rb_plus(self.top,1),self.cs=347,_goto_level=20;continue}if($eqeqeq(142,$ret_or_1)){if(self.te=$rb_plus(p,1),current_literal=self.$literal(),$eqeq(self.te,pe)&&self.$diagnostic("fatal","string_eof",nil,self.$range(current_literal.$str_s(),$rb_plus(current_literal.$str_s(),1))),$truthy(current_literal["$heredoc?"]())){if(line=self.$tok(self.herebody_s,self.ts).$gsub(/\r+$/,"".$freeze()),$truthy(self["$version?"](18,19,20))&&(line=line.$gsub(/\r.*$/,"".$freeze())),$truthy(current_literal.$nest_and_try_closing(line,self.herebody_s,self.ts))){self.herebody_s=self.te,p=$rb_minus(current_literal.$heredoc_e(),1),self.cs=self.$pop_literal(),p=$rb_plus(p,1),_goto_level=40;continue}current_literal.$infer_indent_level(line),self.herebody_s=self.te}else{if($truthy(current_literal.$nest_and_try_closing(self.$tok(),self.ts,self.te))){self.cs=self.$pop_literal(),p=$rb_plus(p,1),_goto_level=40;continue}$truthy(self.herebody_s)&&(p=$rb_minus(self.herebody_s,1),self.herebody_s=nil)}$truthy(current_literal["$words?"]())&&$not(self["$eof_codepoint?"](self.source_pts["$[]"](p)))?current_literal.$extend_space(self.ts,self.te):(current_literal.$extend_string(self.$tok(),self.ts,self.te),current_literal.$flush_string())}else if($eqeqeq(141,$ret_or_1)){if(self.te=$rb_plus(p,1),string=self.$tok(),$truthy($rb_ge(self.version,22))&&$not(self.cond["$active?"]())&&(lookahead=self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te,2),!0))),current_literal=self.$literal(),$not(current_literal["$heredoc?"]())&&$truthy(token=current_literal.$nest_and_try_closing(string,self.ts,self.te,lookahead))){$eqeq(token["$[]"](0),"tLABEL_END")?(p=$rb_plus(p,1),self.$pop_literal(),self.cs=795):self.cs=self.$pop_literal(),p=$rb_plus(p,1),_goto_level=40;continue}current_literal.$extend_string(string,self.ts,self.te)}else if($eqeqeq(147,$ret_or_1))self.te=p,p=$rb_minus(p,1),$truthy($rb_ge(self.version,27))?self.$literal().$extend_string(self.$tok(),self.ts,self.te):(message=$truthy(self.$tok()["$start_with?"]("#@@"))?"cvar_name":"ivar_name",self.$diagnostic("error",message,$hash2(["name"],{name:self.$tok($rb_plus(self.ts,1),self.te)}),self.$range($rb_plus(self.ts,1),self.te)));else{if($eqeqeq(146,$ret_or_1)){self.te=p,p=$rb_minus(p,1),(current_literal=self.$literal()).$flush_string(),current_literal.$extend_content(),self.$emit("tSTRING_DVAR",nil,self.ts,$rb_plus(self.ts,1)),p=self.ts,$writer=[self.top,self.cs],$send(self.stack,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],self.top=$rb_plus(self.top,1),self.cs=347,_goto_level=20;continue}if($eqeqeq(144,$ret_or_1)){if(self.te=p,p=$rb_minus(p,1),string=self.$tok(),$truthy($rb_ge(self.version,22))&&$not(self.cond["$active?"]())&&(lookahead=self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te,2),!0))),current_literal=self.$literal(),$not(current_literal["$heredoc?"]())&&$truthy(token=current_literal.$nest_and_try_closing(string,self.ts,self.te,lookahead))){$eqeq(token["$[]"](0),"tLABEL_END")?(p=$rb_plus(p,1),self.$pop_literal(),self.cs=795):self.cs=self.$pop_literal(),p=$rb_plus(p,1),_goto_level=40;continue}current_literal.$extend_string(string,self.ts,self.te)}else if($eqeqeq(11,$ret_or_1))p=$rb_minus(self.te,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(9,$ret_or_1)){if(p=$rb_minus(self.te,1),string=self.$tok(),$truthy($rb_ge(self.version,22))&&$not(self.cond["$active?"]())&&(lookahead=self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te,2),!0))),current_literal=self.$literal(),$not(current_literal["$heredoc?"]())&&$truthy(token=current_literal.$nest_and_try_closing(string,self.ts,self.te,lookahead))){$eqeq(token["$[]"](0),"tLABEL_END")?(p=$rb_plus(p,1),self.$pop_literal(),self.cs=795):self.cs=self.$pop_literal(),p=$rb_plus(p,1),_goto_level=40;continue}current_literal.$extend_string(string,self.ts,self.te)}else if($eqeqeq(173,$ret_or_1)){if(self.te=$rb_plus(p,1),current_literal=self.$literal(),$eqeq(self.te,pe)&&self.$diagnostic("fatal","string_eof",nil,self.$range(current_literal.$str_s(),$rb_plus(current_literal.$str_s(),1))),$truthy(current_literal["$heredoc?"]())){if(line=self.$tok(self.herebody_s,self.ts).$gsub(/\r+$/,"".$freeze()),$truthy(self["$version?"](18,19,20))&&(line=line.$gsub(/\r.*$/,"".$freeze())),$truthy(current_literal.$nest_and_try_closing(line,self.herebody_s,self.ts))){self.herebody_s=self.te,p=$rb_minus(current_literal.$heredoc_e(),1),self.cs=self.$pop_literal(),p=$rb_plus(p,1),_goto_level=40;continue}current_literal.$infer_indent_level(line),self.herebody_s=self.te}else{if($truthy(current_literal.$nest_and_try_closing(self.$tok(),self.ts,self.te))){self.cs=self.$pop_literal(),p=$rb_plus(p,1),_goto_level=40;continue}$truthy(self.herebody_s)&&(p=$rb_minus(self.herebody_s,1),self.herebody_s=nil)}$truthy(current_literal["$words?"]())&&$not(self["$eof_codepoint?"](self.source_pts["$[]"](p)))?current_literal.$extend_space(self.ts,self.te):(current_literal.$extend_string(self.$tok(),self.ts,self.te),current_literal.$flush_string())}else if($eqeqeq(172,$ret_or_1)){if(self.te=$rb_plus(p,1),string=self.$tok(),$truthy($rb_ge(self.version,22))&&$not(self.cond["$active?"]())&&(lookahead=self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te,2),!0))),current_literal=self.$literal(),$not(current_literal["$heredoc?"]())&&$truthy(token=current_literal.$nest_and_try_closing(string,self.ts,self.te,lookahead))){$eqeq(token["$[]"](0),"tLABEL_END")?(p=$rb_plus(p,1),self.$pop_literal(),self.cs=795):self.cs=self.$pop_literal(),p=$rb_plus(p,1),_goto_level=40;continue}current_literal.$extend_string(string,self.ts,self.te)}else if($eqeqeq(175,$ret_or_1))self.te=p,p=$rb_minus(p,1),self.$literal().$extend_space(self.ts,self.te);else 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null==chars&&(chars=nil),self.$emit("tRATIONAL",self.$Rational(chars))}),{$$arity:1,$$s:self}),self.te=p,p=$rb_minus(p,1),digits=self.$tok(self.ts,self.num_suffix_s),$truthy(self["$version?"](18,19,20))?(self.$emit("tFLOAT",self.$Float(digits),self.ts,self.num_suffix_s),p=$rb_minus(self.num_suffix_s,1)):self.num_xfrm.$call(digits),p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(460,$ret_or_1)){self.num_xfrm=$send(self,"lambda",[],(function $$12(chars){var self=null==$$12.$$s?this:$$12.$$s;return null==chars&&(chars=nil),self.$emit("tIMAGINARY",self.$Complex(0,self.$Rational(chars)))}),{$$arity:1,$$s:self}),self.te=p,p=$rb_minus(p,1),digits=self.$tok(self.ts,self.num_suffix_s),$truthy(self["$version?"](18,19,20))?(self.$emit("tFLOAT",self.$Float(digits),self.ts,self.num_suffix_s),p=$rb_minus(self.num_suffix_s,1)):self.num_xfrm.$call(digits),p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(459,$ret_or_1)){self.num_xfrm=$send(self,"lambda",[],(function $$13(chars){var self=null==$$13.$$s?this:$$13.$$s;return null==self.ts&&(self.ts=nil),null==self.te&&(self.te=nil),null==chars&&(chars=nil),self.$emit("tFLOAT",self.$Float(chars),self.ts,$rb_minus(self.te,6)),p=$rb_minus(p,6)}),{$$arity:1,$$s:self}),self.te=p,p=$rb_minus(p,1),digits=self.$tok(self.ts,self.num_suffix_s),$truthy(self["$version?"](18,19,20))?(self.$emit("tFLOAT",self.$Float(digits),self.ts,self.num_suffix_s),p=$rb_minus(self.num_suffix_s,1)):self.num_xfrm.$call(digits),p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(137,$ret_or_1))self.escape="",codepoints=self.$tok($rb_plus(self.escape_s,2),$rb_minus(p,1)),codepoint_s=$rb_plus(self.escape_s,2),$truthy($rb_lt(self.version,24))&&(($truthy(codepoints["$start_with?"](" "))||$truthy(codepoints["$start_with?"]("\t")))&&self.$diagnostic("fatal","invalid_unicode_escape",nil,self.$range($rb_plus(self.escape_s,2),$rb_plus(self.escape_s,3))),$truthy(spaces_p=codepoints.$index(/[ \t]{2}/))&&self.$diagnostic("fatal","invalid_unicode_escape",nil,self.$range($rb_plus($rb_plus(codepoint_s,spaces_p),1),$rb_plus($rb_plus(codepoint_s,spaces_p),2))),($truthy(codepoints["$end_with?"](" "))||$truthy(codepoints["$end_with?"]("\t")))&&self.$diagnostic("fatal","invalid_unicode_escape",nil,self.$range($rb_minus(p,1),p))),function(){var $brk=Opal.new_brk();try{$send(codepoints.$scan(/([0-9a-fA-F]+)|([ \t]+)/),"each",[],(function $$14($mlhs_tmp1){var $c,self=null==$$14.$$s?this:$$14.$$s,codepoint_str=nil,spaces=nil,codepoint=nil;return null==self.escape&&(self.escape=nil),null==$mlhs_tmp1&&($mlhs_tmp1=nil),codepoint_str=null==($c=$to_ary($mlhs_tmp1))[0]?nil:$c[0],spaces=null==$c[1]?nil:$c[1],$truthy(spaces)?codepoint_s=$rb_plus(codepoint_s,spaces.$length()):(codepoint=codepoint_str.$to_i(16),$truthy($rb_ge(codepoint,1114112))&&(self.$diagnostic("error","unicode_point_too_large",nil,self.$range(codepoint_s,$rb_plus(codepoint_s,codepoint_str.$length()))),Opal.brk(nil,$brk)),self.escape=$rb_plus(self.escape,codepoint.$chr($$$($$("Encoding"),"UTF_8"))),codepoint_s=$rb_plus(codepoint_s,codepoint_str.$length()))}),{$$arity:1,$$s:self,$$brk:$brk,$$has_top_level_mlhs_arg:!0})}catch(err){if(err===$brk)return err.$v;throw err}}(),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(168,$ret_or_1))self.escape="",codepoints=self.$tok($rb_plus(self.escape_s,2),$rb_minus(p,1)),codepoint_s=$rb_plus(self.escape_s,2),$truthy($rb_lt(self.version,24))&&(($truthy(codepoints["$start_with?"](" "))||$truthy(codepoints["$start_with?"]("\t")))&&self.$diagnostic("fatal","invalid_unicode_escape",nil,self.$range($rb_plus(self.escape_s,2),$rb_plus(self.escape_s,3))),$truthy(spaces_p=codepoints.$index(/[ \t]{2}/))&&self.$diagnostic("fatal","invalid_unicode_escape",nil,self.$range($rb_plus($rb_plus(codepoint_s,spaces_p),1),$rb_plus($rb_plus(codepoint_s,spaces_p),2))),($truthy(codepoints["$end_with?"](" "))||$truthy(codepoints["$end_with?"]("\t")))&&self.$diagnostic("fatal","invalid_unicode_escape",nil,self.$range($rb_minus(p,1),p))),function(){var $brk=Opal.new_brk();try{$send(codepoints.$scan(/([0-9a-fA-F]+)|([ \t]+)/),"each",[],(function $$15($mlhs_tmp1){var $c,self=null==$$15.$$s?this:$$15.$$s,codepoint_str=nil,spaces=nil,codepoint=nil;return null==self.escape&&(self.escape=nil),null==$mlhs_tmp1&&($mlhs_tmp1=nil),codepoint_str=null==($c=$to_ary($mlhs_tmp1))[0]?nil:$c[0],spaces=null==$c[1]?nil:$c[1],$truthy(spaces)?codepoint_s=$rb_plus(codepoint_s,spaces.$length()):(codepoint=codepoint_str.$to_i(16),$truthy($rb_ge(codepoint,1114112))&&(self.$diagnostic("error","unicode_point_too_large",nil,self.$range(codepoint_s,$rb_plus(codepoint_s,codepoint_str.$length()))),Opal.brk(nil,$brk)),self.escape=$rb_plus(self.escape,codepoint.$chr($$$($$("Encoding"),"UTF_8"))),codepoint_s=$rb_plus(codepoint_s,codepoint_str.$length()))}),{$$arity:1,$$s:self,$$brk:$brk,$$has_top_level_mlhs_arg:!0})}catch(err){if(err===$brk)return err.$v;throw err}}(),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else{if($eqeqeq(382,$ret_or_1)){self.escape="",codepoints=self.$tok($rb_plus(self.escape_s,2),$rb_minus(p,1)),codepoint_s=$rb_plus(self.escape_s,2),$truthy($rb_lt(self.version,24))&&(($truthy(codepoints["$start_with?"](" "))||$truthy(codepoints["$start_with?"]("\t")))&&self.$diagnostic("fatal","invalid_unicode_escape",nil,self.$range($rb_plus(self.escape_s,2),$rb_plus(self.escape_s,3))),$truthy(spaces_p=codepoints.$index(/[ \t]{2}/))&&self.$diagnostic("fatal","invalid_unicode_escape",nil,self.$range($rb_plus($rb_plus(codepoint_s,spaces_p),1),$rb_plus($rb_plus(codepoint_s,spaces_p),2))),($truthy(codepoints["$end_with?"](" "))||$truthy(codepoints["$end_with?"]("\t")))&&self.$diagnostic("fatal","invalid_unicode_escape",nil,self.$range($rb_minus(p,1),p))),function(){var $brk=Opal.new_brk();try{$send(codepoints.$scan(/([0-9a-fA-F]+)|([ \t]+)/),"each",[],(function $$16($mlhs_tmp1){var $c,self=null==$$16.$$s?this:$$16.$$s,codepoint_str=nil,spaces=nil,codepoint=nil;return null==self.escape&&(self.escape=nil),null==$mlhs_tmp1&&($mlhs_tmp1=nil),codepoint_str=null==($c=$to_ary($mlhs_tmp1))[0]?nil:$c[0],spaces=null==$c[1]?nil:$c[1],$truthy(spaces)?codepoint_s=$rb_plus(codepoint_s,spaces.$length()):(codepoint=codepoint_str.$to_i(16),$truthy($rb_ge(codepoint,1114112))&&(self.$diagnostic("error","unicode_point_too_large",nil,self.$range(codepoint_s,$rb_plus(codepoint_s,codepoint_str.$length()))),Opal.brk(nil,$brk)),self.escape=$rb_plus(self.escape,codepoint.$chr($$$($$("Encoding"),"UTF_8"))),codepoint_s=$rb_plus(codepoint_s,codepoint_str.$length()))}),{$$arity:1,$$s:self,$$brk:$brk,$$has_top_level_mlhs_arg:!0})}catch(err){if(err===$brk)return err.$v;throw err}}(),self.te=p,p=$rb_minus(p,1),value=$truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok($rb_plus(self.ts,1)),$truthy(self["$version?"](18))?self.$emit("tINTEGER",value.$getbyte(0)):self.$emit("tCHARACTER",value),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(118,$ret_or_1))codepoint=self.source_pts["$[]"]($rb_minus(p,1)),$truthy($rb_ge(self.version,30))&&($eqeq(codepoint,117)||$eqeq(codepoint,85))&&self.$diagnostic("fatal","invalid_escape"),$truthy((self.escape=$$("ESCAPES")["$[]"](codepoint))["$nil?"]())&&(self.escape=self.$encode_escape(self.source_buffer.$slice($rb_minus(p,1)))),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(149,$ret_or_1))codepoint=self.source_pts["$[]"]($rb_minus(p,1)),$truthy($rb_ge(self.version,30))&&($eqeq(codepoint,117)||$eqeq(codepoint,85))&&self.$diagnostic("fatal","invalid_escape"),$truthy((self.escape=$$("ESCAPES")["$[]"](codepoint))["$nil?"]())&&(self.escape=self.$encode_escape(self.source_buffer.$slice($rb_minus(p,1)))),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else{if($eqeqeq(363,$ret_or_1)){codepoint=self.source_pts["$[]"]($rb_minus(p,1)),$truthy($rb_ge(self.version,30))&&($eqeq(codepoint,117)||$eqeq(codepoint,85))&&self.$diagnostic("fatal","invalid_escape"),$truthy((self.escape=$$("ESCAPES")["$[]"](codepoint))["$nil?"]())&&(self.escape=self.$encode_escape(self.source_buffer.$slice($rb_minus(p,1)))),self.te=p,p=$rb_minus(p,1),value=$truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok($rb_plus(self.ts,1)),$truthy(self["$version?"](18))?self.$emit("tINTEGER",value.$getbyte(0)):self.$emit("tCHARACTER",value),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(121,$ret_or_1))self.$diagnostic("fatal","invalid_escape"),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(152,$ret_or_1))self.$diagnostic("fatal","invalid_escape"),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else{if($eqeqeq(366,$ret_or_1)){self.$diagnostic("fatal","invalid_escape"),self.te=p,p=$rb_minus(p,1),value=$truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok($rb_plus(self.ts,1)),$truthy(self["$version?"](18))?self.$emit("tINTEGER",value.$getbyte(0)):self.$emit("tCHARACTER",value),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(123,$ret_or_1))self.escape="",self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(154,$ret_or_1))self.escape="",self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else{if($eqeqeq(368,$ret_or_1)){self.escape="",self.te=p,p=$rb_minus(p,1),value=$truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok($rb_plus(self.ts,1)),$truthy(self["$version?"](18))?self.$emit("tINTEGER",value.$getbyte(0)):self.$emit("tCHARACTER",value),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(120,$ret_or_1))self.escape=self.$encode_escape(self.$tok(self.escape_s,p).$to_i(8)["$%"](256)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(151,$ret_or_1))self.escape=self.$encode_escape(self.$tok(self.escape_s,p).$to_i(8)["$%"](256)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else{if($eqeqeq(365,$ret_or_1)){self.escape=self.$encode_escape(self.$tok(self.escape_s,p).$to_i(8)["$%"](256)),self.te=p,p=$rb_minus(p,1),value=$truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok($rb_plus(self.ts,1)),$truthy(self["$version?"](18))?self.$emit("tINTEGER",value.$getbyte(0)):self.$emit("tCHARACTER",value),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(140,$ret_or_1))self.escape=self.$encode_escape(self.$tok($rb_plus(self.escape_s,1),p).$to_i(16)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(171,$ret_or_1))self.escape=self.$encode_escape(self.$tok($rb_plus(self.escape_s,1),p).$to_i(16)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else{if($eqeqeq(385,$ret_or_1)){self.escape=self.$encode_escape(self.$tok($rb_plus(self.escape_s,1),p).$to_i(16)),self.te=p,p=$rb_minus(p,1),value=$truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok($rb_plus(self.ts,1)),$truthy(self["$version?"](18))?self.$emit("tINTEGER",value.$getbyte(0)):self.$emit("tCHARACTER",value),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(139,$ret_or_1))self.$diagnostic("fatal","invalid_hex_escape",nil,self.$range($rb_minus(self.escape_s,1),$rb_plus(p,2))),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(170,$ret_or_1))self.$diagnostic("fatal","invalid_hex_escape",nil,self.$range($rb_minus(self.escape_s,1),$rb_plus(p,2))),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else{if($eqeqeq(384,$ret_or_1)){self.$diagnostic("fatal","invalid_hex_escape",nil,self.$range($rb_minus(self.escape_s,1),$rb_plus(p,2))),self.te=p,p=$rb_minus(p,1),value=$truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok($rb_plus(self.ts,1)),$truthy(self["$version?"](18))?self.$emit("tINTEGER",value.$getbyte(0)):self.$emit("tCHARACTER",value),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(134,$ret_or_1))self.escape=self.$tok($rb_plus(self.escape_s,1),p).$to_i(16).$chr($$$($$("Encoding"),"UTF_8")),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(165,$ret_or_1))self.escape=self.$tok($rb_plus(self.escape_s,1),p).$to_i(16).$chr($$$($$("Encoding"),"UTF_8")),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else{if($eqeqeq(379,$ret_or_1)){self.escape=self.$tok($rb_plus(self.escape_s,1),p).$to_i(16).$chr($$$($$("Encoding"),"UTF_8")),self.te=p,p=$rb_minus(p,1),value=$truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok($rb_plus(self.ts,1)),$truthy(self["$version?"](18))?self.$emit("tINTEGER",value.$getbyte(0)):self.$emit("tCHARACTER",value),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(133,$ret_or_1))self.$diagnostic("fatal","invalid_unicode_escape",nil,self.$range($rb_minus(self.escape_s,1),p)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(164,$ret_or_1))self.$diagnostic("fatal","invalid_unicode_escape",nil,self.$range($rb_minus(self.escape_s,1),p)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else{if($eqeqeq(378,$ret_or_1)){self.$diagnostic("fatal","invalid_unicode_escape",nil,self.$range($rb_minus(self.escape_s,1),p)),self.te=p,p=$rb_minus(p,1),value=$truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok($rb_plus(self.ts,1)),$truthy(self["$version?"](18))?self.$emit("tINTEGER",value.$getbyte(0)):self.$emit("tCHARACTER",value),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(138,$ret_or_1))self.$diagnostic("fatal","invalid_unicode_escape",nil,self.$range($rb_minus(self.escape_s,1),p)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else 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if($eqeqeq(65,$ret_or_1))self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.newline_s=p;else if($eqeqeq(222,$ret_or_1))self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.te=p,p=$rb_minus(p,1);else if($eqeqeq(237,$ret_or_1))self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.te=p,p=$rb_minus(p,1);else if($eqeqeq(249,$ret_or_1))self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.te=p,p=$rb_minus(p,1);else{if($eqeqeq(271,$ret_or_1)){self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.te=p,p=$rb_minus(p,1),self.cs=810,_goto_level=20;continue}if($eqeqeq(286,$ret_or_1))self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.te=p,p=$rb_minus(p,1);else if($eqeqeq(298,$ret_or_1))self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.te=p,p=$rb_minus(p,1);else if($eqeqeq(324,$ret_or_1))self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.te=p,p=$rb_minus(p,1);else 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if($eqeqeq(103,$ret_or_1))self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.te=p,p=$rb_minus(p,1);else{if($eqeqeq(243,$ret_or_1)){tm=p,self.te=p,p=$rb_minus(p,1),self.$emit("tFID",self.$tok(self.ts,tm),self.ts,tm),self.cs=self.$arg_or_cmdarg(cmd_state),p=$rb_minus(tm,1),p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(338,$ret_or_1)){tm=p,self.te=p,p=$rb_minus(p,1),self.$emit("tSYMBOL",self.$tok($rb_plus(self.ts,1),tm),self.ts,tm),p=$rb_minus(tm,1),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(309,$ret_or_1)){tm=p,self.te=p,p=$rb_minus(p,1),p=$rb_minus(self.ts,1),self.cs=810,_goto_level=20;continue}if($eqeqeq(424,$ret_or_1)){if(tm=p,$eqeqeq(145,$ret_or_2=self.act)){p=$rb_minus(self.te,1),$eqeq(self.lambda_stack.$last(),self.paren_nest)?(self.lambda_stack.$pop(),$eqeq(self.$tok(),"{".$freeze())?self.$emit("tLAMBEG","{".$freeze()):self.$emit("kDO_LAMBDA","do".$freeze())):$eqeq(self.$tok(),"{".$freeze())?self.$emit("tLCURLY","{".$freeze()):self.$emit_do(),$eqeq(self.$tok(),"{".$freeze())&&(self.paren_nest=$rb_plus(self.paren_nest,1)),self.command_start=!0,self.cs=802,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(146,$ret_or_2)){p=$rb_minus(self.te,1),self.$emit_table($$("KEYWORDS")),self.cs=352,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(147,$ret_or_2)){p=$rb_minus(self.te,1),self.$emit("kCLASS","class".$freeze(),self.ts,$rb_plus(self.ts,5)),self.$emit("tLSHFT","<<".$freeze(),$rb_minus(self.te,2),self.te),self.cs=802,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(148,$ret_or_2)){p=$rb_minus(self.te,1),self.$emit_table($$("KEYWORDS")),self.cs=563,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(149,$ret_or_2)){p=$rb_minus(self.te,1),self.$emit_table($$("KEYWORDS")),self.command_start=!0,self.cs=802,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(150,$ret_or_2)){p=$rb_minus(self.te,1),self.$emit_table($$("KEYWORDS")),self.cs=539,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(151,$ret_or_2)){if(p=$rb_minus(self.te,1),self.$emit_table($$("KEYWORDS")),$truthy(self["$version?"](18))&&$eqeq(self.$tok(),"not".$freeze())){self.cs=563,p=$rb_plus(p,1),_goto_level=40;continue}self.cs=494,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(152,$ret_or_2)){p=$rb_minus(self.te,1),$truthy(self["$version?"](18))?(self.$emit("tIDENTIFIER"),$not(self.static_env["$nil?"]())&&$truthy(self.static_env["$declared?"](self.$tok()))||(self.cs=self.$arg_or_cmdarg(cmd_state))):self.$emit("k__ENCODING__","__ENCODING__".$freeze()),p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(153,$ret_or_2)){p=$rb_minus(self.te,1),self.$emit_table($$("KEYWORDS")),p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(154,$ret_or_2)){p=$rb_minus(self.te,1),digits=self.$tok(self.num_digits_s,self.num_suffix_s),$truthy(digits["$end_with?"]("_".$freeze()))?self.$diagnostic("error","trailing_in_number",$hash2(["character"],{character:"_".$freeze()}),self.$range($rb_minus(self.te,1),self.te)):$truthy(digits["$empty?"]())&&$eqeq(self.num_base,8)&&$truthy(self["$version?"](18))?digits="0".$freeze():$truthy(digits["$empty?"]())?self.$diagnostic("error","empty_numeric"):$eqeq(self.num_base,8)&&$truthy(invalid_idx=digits.$index(/[89]/))&&(invalid_s=$rb_plus(self.num_digits_s,invalid_idx),self.$diagnostic("error","invalid_octal",nil,self.$range(invalid_s,$rb_plus(invalid_s,1)))),$truthy(self["$version?"](18,19,20))?(self.$emit("tINTEGER",digits.$to_i(self.num_base),self.ts,self.num_suffix_s),p=$rb_minus(self.num_suffix_s,1)):self.num_xfrm.$call(digits.$to_i(self.num_base)),p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(156,$ret_or_2)){if(p=$rb_minus(self.te,1),!$truthy(self["$version?"](18,19,20))){self.$emit("tINTEGER",self.$tok(self.ts,$rb_minus(self.te,1)).$to_i(),self.ts,$rb_minus(self.te,1)),p=$rb_minus(p,1),p=$rb_plus(p,1),_goto_level=40;continue}self.$diagnostic("error","trailing_in_number",$hash2(["character"],{character:self.$tok($rb_minus(self.te,1),self.te)}),self.$range($rb_minus(self.te,1),self.te))}else if($eqeqeq(157,$ret_or_2)){if(p=$rb_minus(self.te,1),!$truthy(self["$version?"](18,19,20))){self.$emit("tFLOAT",self.$tok(self.ts,$rb_minus(self.te,1)).$to_f(),self.ts,$rb_minus(self.te,1)),p=$rb_minus(p,1),p=$rb_plus(p,1),_goto_level=40;continue}self.$diagnostic("error","trailing_in_number",$hash2(["character"],{character:self.$tok($rb_minus(self.te,1),self.te)}),self.$range($rb_minus(self.te,1),self.te))}else{if($eqeqeq(158,$ret_or_2)){p=$rb_minus(self.te,1),digits=self.$tok(self.ts,self.num_suffix_s),$truthy(self["$version?"](18,19,20))?(self.$emit("tFLOAT",self.$Float(digits),self.ts,self.num_suffix_s),p=$rb_minus(self.num_suffix_s,1)):self.num_xfrm.$call(digits),p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(160,$ret_or_2)){p=$rb_minus(self.te,1),self.$emit("tCONSTANT"),self.cs=self.$arg_or_cmdarg(cmd_state),p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(164,$ret_or_2)){if(p=$rb_minus(self.te,1),self.$emit("tIDENTIFIER"),$not(self.static_env["$nil?"]())&&$truthy(self.static_env["$declared?"](self.$tok()))){self.cs=465,p=$rb_plus(p,1),_goto_level=40;continue}self.cs=self.$arg_or_cmdarg(cmd_state),p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(165,$ret_or_2)){p=$rb_minus(self.te,1),$eqeq(tm,self.te)?self.$emit("tFID"):(self.$emit("tIDENTIFIER",self.$tok(self.ts,tm),self.ts,tm),p=$rb_minus(tm,1)),self.cs=494,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(167,$ret_or_2)){p=$rb_minus(self.te,1),self.$emit_table($$("PUNCTUATION")),self.cs=802,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(168,$ret_or_2)){p=$rb_minus(self.te,1),self.$emit_table($$("PUNCTUATION")),self.cs=563,p=$rb_plus(p,1),_goto_level=40;continue}}}else{if($eqeqeq(244,$ret_or_1)){tm=$rb_minus(p,2),self.te=p,p=$rb_minus(p,1),self.$emit("tFID",self.$tok(self.ts,tm),self.ts,tm),self.cs=self.$arg_or_cmdarg(cmd_state),p=$rb_minus(tm,1),p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(339,$ret_or_1)){tm=$rb_minus(p,2),self.te=p,p=$rb_minus(p,1),self.$emit("tSYMBOL",self.$tok($rb_plus(self.ts,1),tm),self.ts,tm),p=$rb_minus(tm,1),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(311,$ret_or_1)){tm=$rb_minus(p,2),self.te=p,p=$rb_minus(p,1),p=$rb_minus(self.ts,1),self.cs=810,_goto_level=20;continue}if($eqeqeq(425,$ret_or_1)){tm=$rb_minus(p,2),self.te=p,p=$rb_minus(p,1),$eqeq(tm,self.te)?self.$emit("tFID"):(self.$emit("tIDENTIFIER",self.$tok(self.ts,tm),self.ts,tm),p=$rb_minus(tm,1)),self.cs=494,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(340,$ret_or_1)){tm=p,self.te=p,p=$rb_minus(p,1),self.$emit("tSYMBOL",self.$tok($rb_plus(self.ts,1),tm),self.ts,tm),p=$rb_minus(tm,1),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(312,$ret_or_1)){tm=p,self.te=p,p=$rb_minus(p,1),p=$rb_minus(self.ts,1),self.cs=810,_goto_level=20;continue}if($eqeqeq(341,$ret_or_1)){tm=$rb_minus(p,2),self.te=p,p=$rb_minus(p,1),self.$emit("tSYMBOL",self.$tok($rb_plus(self.ts,1),tm),self.ts,tm),p=$rb_minus(tm,1),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(313,$ret_or_1)){tm=$rb_minus(p,2),self.te=p,p=$rb_minus(p,1),p=$rb_minus(self.ts,1),self.cs=810,_goto_level=20;continue}if($eqeqeq(345,$ret_or_1)){tm=$rb_minus(p,2),self.te=p,p=$rb_minus(p,1),self.$emit("tSYMBOL",self.$tok($rb_plus(self.ts,1),tm),self.ts,tm),p=$rb_minus(tm,1),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(316,$ret_or_1)){tm=$rb_minus(p,2),self.te=p,p=$rb_minus(p,1),p=$rb_minus(self.ts,1),self.cs=810,_goto_level=20;continue}if($eqeqeq(344,$ret_or_1)){tm=$rb_minus(p,2),self.te=p,p=$rb_minus(p,1),self.$emit("tSYMBOL",self.$tok($rb_plus(self.ts,1),tm),self.ts,tm),p=$rb_minus(tm,1),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(315,$ret_or_1)){if(tm=$rb_minus(p,2),$eqeqeq(99,$ret_or_2=self.act)){p=$rb_minus(self.te,1),self.$emit("tUNARY_NUM",self.$tok(self.ts,$rb_plus(self.ts,1)),self.ts,$rb_plus(self.ts,1)),p=$rb_minus(p,1),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(106,$ret_or_2))p=$rb_minus(self.te,1),self.$diagnostic("error","unterminated_heredoc_id",nil,self.$range(self.ts,$rb_plus(self.ts,1)));else{if($eqeqeq(117,$ret_or_2)){if(p=$rb_minus(self.te,1),$truthy($rb_ge(self.version,27))){self.$emit("tPIPE",self.$tok(self.ts,$rb_plus(self.ts,1)),self.ts,$rb_plus(self.ts,1)),p=$rb_minus(p,1),self.cs=563,p=$rb_plus(p,1),_goto_level=40;continue}p=$rb_minus(p,2),self.cs=810,_goto_level=20;continue}if($eqeqeq(121,$ret_or_2)){p=$rb_minus(self.te,1),self.$emit_table($$("PUNCTUATION_BEGIN")),p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(122,$ret_or_2)){p=$rb_minus(self.te,1),self.$emit("kRESCUE","rescue".$freeze(),self.ts,tm),p=$rb_minus(tm,1),self.cs=539,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(123,$ret_or_2)){p=$rb_minus(self.te,1),self.$emit_table($$("KEYWORDS_BEGIN")),self.command_start=!0,self.cs=802,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(127,$ret_or_2)){p=$rb_minus(self.te,1),p=$rb_minus(self.ts,1),self.cs=810,_goto_level=20;continue}if($eqeqeq(128,$ret_or_2)){if(p=$rb_minus(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if($eqeqeq(474,$ret_or_1))self.num_base=10,self.num_digits_s=p,self.num_suffix_s=p;else if($eqeqeq(477,$ret_or_1))self.num_base=8,self.num_digits_s=p,self.num_suffix_s=p;else if($eqeqeq(471,$ret_or_1))self.num_base=2,self.num_digits_s=p,self.num_suffix_s=p;else if($eqeqeq(486,$ret_or_1))self.num_base=10,self.num_digits_s=self.ts,self.num_suffix_s=p;else if($eqeqeq(449,$ret_or_1))self.num_base=8,self.num_digits_s=self.ts,self.num_suffix_s=p;else if($eqeqeq(487,$ret_or_1))self.num_suffix_s=p,self.num_xfrm=$send(self,"lambda",[],(function $$17(chars){return null==chars&&(chars=nil),(null==$$17.$$s?this:$$17.$$s).$emit("tINTEGER",chars)}),{$$arity:1,$$s:self});else if($eqeqeq(8,$ret_or_1))self.te=$rb_plus(p,1),self.newline_s=p;else if($eqeqeq(453,$ret_or_1))self.te=$rb_plus(p,1),self.num_suffix_s=p;else if($eqeqeq(228,$ret_or_1))self.te=$rb_plus(p,1),self.act=43;else if($eqeqeq(215,$ret_or_1))self.te=$rb_plus(p,1),self.act=44;else if($eqeqeq(211,$ret_or_1))self.te=$rb_plus(p,1),self.act=45;else if($eqeqeq(27,$ret_or_1))self.te=$rb_plus(p,1),self.act=72;else if($eqeqeq(261,$ret_or_1))self.te=$rb_plus(p,1),self.act=73;else if($eqeqeq(28,$ret_or_1))self.te=$rb_plus(p,1),self.act=78;else if($eqeqeq(254,$ret_or_1))self.te=$rb_plus(p,1),self.act=79;else if($eqeqeq(281,$ret_or_1))self.te=$rb_plus(p,1),self.act=85;else if($eqeqeq(46,$ret_or_1))self.te=$rb_plus(p,1),self.act=86;else if($eqeqeq(302,$ret_or_1))self.te=$rb_plus(p,1),self.act=93;else if($eqeqeq(291,$ret_or_1))self.te=$rb_plus(p,1),self.act=94;else if($eqeqeq(70,$ret_or_1))self.te=$rb_plus(p,1),self.act=106;else if($eqeqeq(394,$ret_or_1))self.te=$rb_plus(p,1),self.act=117;else if($eqeqeq(305,$ret_or_1))self.te=$rb_plus(p,1),self.act=121;else if($eqeqeq(388,$ret_or_1))self.te=$rb_plus(p,1),self.act=122;else if($eqeqeq(387,$ret_or_1))self.te=$rb_plus(p,1),self.act=123;else if($eqeqeq(75,$ret_or_1))self.te=$rb_plus(p,1),self.act=127;else 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if($eqeqeq(423,$ret_or_1))self.te=$rb_plus(p,1),self.act=165;else if($eqeqeq(416,$ret_or_1))self.te=$rb_plus(p,1),self.act=167;else if($eqeqeq(422,$ret_or_1))self.te=$rb_plus(p,1),self.act=168;else if($eqeqeq(88,$ret_or_1))self.te=$rb_plus(p,1),self.act=181;else if($eqeqeq(511,$ret_or_1))self.te=$rb_plus(p,1),self.act=185;else if($eqeqeq(183,$ret_or_1)){if(self.newline_s=p,self.te=$rb_plus(p,1),current_literal=self.$literal(),$eqeq(self.te,pe)&&self.$diagnostic("fatal","string_eof",nil,self.$range(current_literal.$str_s(),$rb_plus(current_literal.$str_s(),1))),$truthy(current_literal["$heredoc?"]())){if(line=self.$tok(self.herebody_s,self.ts).$gsub(/\r+$/,"".$freeze()),$truthy(self["$version?"](18,19,20))&&(line=line.$gsub(/\r.*$/,"".$freeze())),$truthy(current_literal.$nest_and_try_closing(line,self.herebody_s,self.ts))){self.herebody_s=self.te,p=$rb_minus(current_literal.$heredoc_e(),1),self.cs=self.$pop_literal(),p=$rb_plus(p,1),_goto_level=40;continue}current_literal.$infer_indent_level(line),self.herebody_s=self.te}else{if($truthy(current_literal.$nest_and_try_closing(self.$tok(),self.ts,self.te))){self.cs=self.$pop_literal(),p=$rb_plus(p,1),_goto_level=40;continue}$truthy(self.herebody_s)&&(p=$rb_minus(self.herebody_s,1),self.herebody_s=nil)}$truthy(current_literal["$words?"]())&&$not(self["$eof_codepoint?"](self.source_pts["$[]"](p)))?current_literal.$extend_space(self.ts,self.te):(current_literal.$extend_string(self.$tok(),self.ts,self.te),current_literal.$flush_string()),self.escape_s=p,self.escape=nil}else if($eqeqeq(124,$ret_or_1))codepoint=self.source_pts["$[]"]($rb_minus(p,1)),$truthy($rb_ge(self.version,30))&&($eqeq(codepoint,117)||$eqeq(codepoint,85))&&self.$diagnostic("fatal","invalid_escape"),$truthy((self.escape=$$("ESCAPES")["$[]"](codepoint))["$nil?"]())&&(self.escape=self.$encode_escape(self.source_buffer.$slice($rb_minus(p,1)))),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$&"](159)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(155,$ret_or_1))codepoint=self.source_pts["$[]"]($rb_minus(p,1)),$truthy($rb_ge(self.version,30))&&($eqeq(codepoint,117)||$eqeq(codepoint,85))&&self.$diagnostic("fatal","invalid_escape"),$truthy((self.escape=$$("ESCAPES")["$[]"](codepoint))["$nil?"]())&&(self.escape=self.$encode_escape(self.source_buffer.$slice($rb_minus(p,1)))),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$&"](159)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else{if($eqeqeq(369,$ret_or_1)){codepoint=self.source_pts["$[]"]($rb_minus(p,1)),$truthy($rb_ge(self.version,30))&&($eqeq(codepoint,117)||$eqeq(codepoint,85))&&self.$diagnostic("fatal","invalid_escape"),$truthy((self.escape=$$("ESCAPES")["$[]"](codepoint))["$nil?"]())&&(self.escape=self.$encode_escape(self.source_buffer.$slice($rb_minus(p,1)))),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$&"](159)),self.te=p,p=$rb_minus(p,1),value=$truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok($rb_plus(self.ts,1)),$truthy(self["$version?"](18))?self.$emit("tINTEGER",value.$getbyte(0)):self.$emit("tCHARACTER",value),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(131,$ret_or_1))codepoint=self.source_pts["$[]"]($rb_minus(p,1)),$truthy($rb_ge(self.version,30))&&($eqeq(codepoint,117)||$eqeq(codepoint,85))&&self.$diagnostic("fatal","invalid_escape"),$truthy((self.escape=$$("ESCAPES")["$[]"](codepoint))["$nil?"]())&&(self.escape=self.$encode_escape(self.source_buffer.$slice($rb_minus(p,1)))),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(162,$ret_or_1))codepoint=self.source_pts["$[]"]($rb_minus(p,1)),$truthy($rb_ge(self.version,30))&&($eqeq(codepoint,117)||$eqeq(codepoint,85))&&self.$diagnostic("fatal","invalid_escape"),$truthy((self.escape=$$("ESCAPES")["$[]"](codepoint))["$nil?"]())&&(self.escape=self.$encode_escape(self.source_buffer.$slice($rb_minus(p,1)))),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else{if($eqeqeq(376,$ret_or_1)){codepoint=self.source_pts["$[]"]($rb_minus(p,1)),$truthy($rb_ge(self.version,30))&&($eqeq(codepoint,117)||$eqeq(codepoint,85))&&self.$diagnostic("fatal","invalid_escape"),$truthy((self.escape=$$("ESCAPES")["$[]"](codepoint))["$nil?"]())&&(self.escape=self.$encode_escape(self.source_buffer.$slice($rb_minus(p,1)))),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),value=$truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok($rb_plus(self.ts,1)),$truthy(self["$version?"](18))?self.$emit("tINTEGER",value.$getbyte(0)):self.$emit("tCHARACTER",value),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(122,$ret_or_1))self.escape=self.source_buffer.$slice($rb_minus(p,1)).$chr(),$truthy($rb_ge(self.version,27))&&($truthy($range(0,8,!1)["$include?"](self.escape.$ord()))||$truthy($range(14,31,!1)["$include?"](self.escape.$ord())))&&self.$diagnostic("fatal","invalid_escape"),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$&"](159)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(153,$ret_or_1))self.escape=self.source_buffer.$slice($rb_minus(p,1)).$chr(),$truthy($rb_ge(self.version,27))&&($truthy($range(0,8,!1)["$include?"](self.escape.$ord()))||$truthy($range(14,31,!1)["$include?"](self.escape.$ord())))&&self.$diagnostic("fatal","invalid_escape"),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$&"](159)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else{if($eqeqeq(367,$ret_or_1)){self.escape=self.source_buffer.$slice($rb_minus(p,1)).$chr(),$truthy($rb_ge(self.version,27))&&($truthy($range(0,8,!1)["$include?"](self.escape.$ord()))||$truthy($range(14,31,!1)["$include?"](self.escape.$ord())))&&self.$diagnostic("fatal","invalid_escape"),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$&"](159)),self.te=p,p=$rb_minus(p,1),value=$truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok($rb_plus(self.ts,1)),$truthy(self["$version?"](18))?self.$emit("tINTEGER",value.$getbyte(0)):self.$emit("tCHARACTER",value),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(130,$ret_or_1))self.escape=self.source_buffer.$slice($rb_minus(p,1)).$chr(),$truthy($rb_ge(self.version,27))&&($truthy($range(0,8,!1)["$include?"](self.escape.$ord()))||$truthy($range(14,31,!1)["$include?"](self.escape.$ord())))&&self.$diagnostic("fatal","invalid_escape"),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(161,$ret_or_1))self.escape=self.source_buffer.$slice($rb_minus(p,1)).$chr(),$truthy($rb_ge(self.version,27))&&($truthy($range(0,8,!1)["$include?"](self.escape.$ord()))||$truthy($range(14,31,!1)["$include?"](self.escape.$ord())))&&self.$diagnostic("fatal","invalid_escape"),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else{if($eqeqeq(375,$ret_or_1)){self.escape=self.source_buffer.$slice($rb_minus(p,1)).$chr(),$truthy($rb_ge(self.version,27))&&($truthy($range(0,8,!1)["$include?"](self.escape.$ord()))||$truthy($range(14,31,!1)["$include?"](self.escape.$ord())))&&self.$diagnostic("fatal","invalid_escape"),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),value=$truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok($rb_plus(self.ts,1)),$truthy(self["$version?"](18))?self.$emit("tINTEGER",value.$getbyte(0)):self.$emit("tCHARACTER",value),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(126,$ret_or_1))self.escape="",self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(157,$ret_or_1))self.escape="",self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else{if($eqeqeq(371,$ret_or_1)){self.escape="",self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),value=$truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok($rb_plus(self.ts,1)),$truthy(self["$version?"](18))?self.$emit("tINTEGER",value.$getbyte(0)):self.$emit("tCHARACTER",value),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(129,$ret_or_1))self.escape=self.$encode_escape(self.$tok($rb_minus(p,2),p).$to_i(16)),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$&"](159)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else 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if($eqeqeq(167,$ret_or_1))self.$diagnostic("fatal","invalid_unicode_escape",nil,self.$range($rb_minus(self.escape_s,1),p)),self.$diagnostic("fatal","unterminated_unicode",nil,self.$range($rb_minus(p,1),p)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else{if($eqeqeq(381,$ret_or_1)){self.$diagnostic("fatal","invalid_unicode_escape",nil,self.$range($rb_minus(self.escape_s,1),p)),self.$diagnostic("fatal","unterminated_unicode",nil,self.$range($rb_minus(p,1),p)),self.te=p,p=$rb_minus(p,1),value=$truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok($rb_plus(self.ts,1)),$truthy(self["$version?"](18))?self.$emit("tINTEGER",value.$getbyte(0)):self.$emit("tCHARACTER",value),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(116,$ret_or_1))self.escape_s=p,self.escape=nil,self.$diagnostic("fatal","escape_eof",nil,self.$range($rb_minus(p,1),p)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(148,$ret_or_1))self.escape_s=p,self.escape=nil,self.$diagnostic("fatal","escape_eof",nil,self.$range($rb_minus(p,1),p)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else{if($eqeqeq(362,$ret_or_1)){self.escape_s=p,self.escape=nil,self.$diagnostic("fatal","escape_eof",nil,self.$range($rb_minus(p,1),p)),self.te=p,p=$rb_minus(p,1),value=$truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok($rb_plus(self.ts,1)),$truthy(self["$version?"](18))?self.$emit("tINTEGER",value.$getbyte(0)):self.$emit("tCHARACTER",value),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(62,$ret_or_1))self.sharp_s=$rb_minus(p,1),self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.newline_s=p;else if($eqeqeq(221,$ret_or_1))self.sharp_s=$rb_minus(p,1),self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.te=p,p=$rb_minus(p,1);else if($eqeqeq(236,$ret_or_1))self.sharp_s=$rb_minus(p,1),self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.te=p,p=$rb_minus(p,1);else if($eqeqeq(248,$ret_or_1))self.sharp_s=$rb_minus(p,1),self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.te=p,p=$rb_minus(p,1);else{if($eqeqeq(270,$ret_or_1)){self.sharp_s=$rb_minus(p,1),self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.te=p,p=$rb_minus(p,1),self.cs=810,_goto_level=20;continue}if($eqeqeq(285,$ret_or_1))self.sharp_s=$rb_minus(p,1),self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.te=p,p=$rb_minus(p,1);else if($eqeqeq(297,$ret_or_1))self.sharp_s=$rb_minus(p,1),self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.te=p,p=$rb_minus(p,1);else if($eqeqeq(323,$ret_or_1))self.sharp_s=$rb_minus(p,1),self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.te=p,p=$rb_minus(p,1);else if($eqeqeq(399,$ret_or_1))self.sharp_s=$rb_minus(p,1),self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.te=p,p=$rb_minus(p,1);else if($eqeqeq(409,$ret_or_1))self.sharp_s=$rb_minus(p,1),self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.te=p,p=$rb_minus(p,1);else if($eqeqeq(430,$ret_or_1))self.sharp_s=$rb_minus(p,1),self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.te=p,p=$rb_minus(p,1);else if($eqeqeq(102,$ret_or_1))self.sharp_s=$rb_minus(p,1),self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.te=p,p=$rb_minus(p,1);else if($eqeqeq(482,$ret_or_1))self.num_base=10,self.num_digits_s=self.ts,self.num_suffix_s=p,self.num_xfrm=$send(self,"lambda",[],(function $$18(chars){return null==chars&&(chars=nil),(null==$$18.$$s?this:$$18.$$s).$emit("tINTEGER",chars)}),{$$arity:1,$$s:self});else if($eqeqeq(446,$ret_or_1))self.num_base=8,self.num_digits_s=self.ts,self.num_suffix_s=p,self.num_xfrm=$send(self,"lambda",[],(function $$19(chars){return null==chars&&(chars=nil),(null==$$19.$$s?this:$$19.$$s).$emit("tINTEGER",chars)}),{$$arity:1,$$s:self});else{if($eqeqeq(461,$ret_or_1)){self.num_suffix_s=p,self.num_xfrm=$send(self,"lambda",[],(function $$20(chars){return null==chars&&(chars=nil),(null==$$20.$$s?this:$$20.$$s).$emit("tINTEGER",chars)}),{$$arity:1,$$s:self}),self.te=p,p=$rb_minus(p,1),digits=self.$tok(self.num_digits_s,self.num_suffix_s),$truthy(digits["$end_with?"]("_".$freeze()))?self.$diagnostic("error","trailing_in_number",$hash2(["character"],{character:"_".$freeze()}),self.$range($rb_minus(self.te,1),self.te)):$truthy(digits["$empty?"]())&&$eqeq(self.num_base,8)&&$truthy(self["$version?"](18))?digits="0".$freeze():$truthy(digits["$empty?"]())?self.$diagnostic("error","empty_numeric"):$eqeq(self.num_base,8)&&$truthy(invalid_idx=digits.$index(/[89]/))&&(invalid_s=$rb_plus(self.num_digits_s,invalid_idx),self.$diagnostic("error","invalid_octal",nil,self.$range(invalid_s,$rb_plus(invalid_s,1)))),$truthy(self["$version?"](18,19,20))?(self.$emit("tINTEGER",digits.$to_i(self.num_base),self.ts,self.num_suffix_s),p=$rb_minus(self.num_suffix_s,1)):self.num_xfrm.$call(digits.$to_i(self.num_base)),p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(454,$ret_or_1)){self.num_suffix_s=p,self.num_xfrm=$send(self,"lambda",[],(function $$21(chars){var self=null==$$21.$$s?this:$$21.$$s;return null==chars&&(chars=nil),self.$emit("tFLOAT",self.$Float(chars))}),{$$arity:1,$$s:self}),self.te=p,p=$rb_minus(p,1),digits=self.$tok(self.ts,self.num_suffix_s),$truthy(self["$version?"](18,19,20))?(self.$emit("tFLOAT",self.$Float(digits),self.ts,self.num_suffix_s),p=$rb_minus(self.num_suffix_s,1)):self.num_xfrm.$call(digits),p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(450,$ret_or_1)){self.num_suffix_s=p,self.num_xfrm=$send(self,"lambda",[],(function $$22(chars){var self=null==$$22.$$s?this:$$22.$$s;return null==chars&&(chars=nil),self.$emit("tFLOAT",self.$Float(chars))}),{$$arity:1,$$s:self}),self.te=p,p=$rb_minus(p,1),digits=self.$tok(self.ts,self.num_suffix_s),$truthy(self["$version?"](18,19,20))?(self.$emit("tFLOAT",self.$Float(digits),self.ts,self.num_suffix_s),p=$rb_minus(self.num_suffix_s,1)):self.num_xfrm.$call(digits),p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(276,$ret_or_1))self.te=$rb_plus(p,1),self.newline_s=p,self.act=79;else if($eqeqeq(36,$ret_or_1))self.te=$rb_plus(p,1),$truthy(self.herebody_s)&&(p=self.herebody_s,self.herebody_s=nil),self.act=78;else if($eqeqeq(47,$ret_or_1))self.te=$rb_plus(p,1),$truthy(self.herebody_s)&&(p=self.herebody_s,self.herebody_s=nil),self.act=86;else if($eqeqeq(94,$ret_or_1))self.te=$rb_plus(p,1),$truthy(self.herebody_s)&&(p=self.herebody_s,self.herebody_s=nil),self.act=181;else if($eqeqeq(66,$ret_or_1))self.te=$rb_plus(p,1),self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.act=99;else if($eqeqeq(85,$ret_or_1))self.te=$rb_plus(p,1),self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.act=147;else if($eqeqeq(93,$ret_or_1))self.te=$rb_plus(p,1),self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.act=181;else if($eqeqeq(38,$ret_or_1))self.te=$rb_plus(p,1),tm=p,self.act=73;else if($eqeqeq(391,$ret_or_1))self.te=$rb_plus(p,1),tm=p,self.act=127;else if($eqeqeq(390,$ret_or_1))self.te=$rb_plus(p,1),tm=p,self.act=128;else if($eqeqeq(483,$ret_or_1))self.te=$rb_plus(p,1),self.num_base=10,self.num_digits_s=self.ts,self.act=154;else if($eqeqeq(127,$ret_or_1))codepoint=self.source_pts["$[]"]($rb_minus(p,1)),$truthy($rb_ge(self.version,30))&&($eqeq(codepoint,117)||$eqeq(codepoint,85))&&self.$diagnostic("fatal","invalid_escape"),$truthy((self.escape=$$("ESCAPES")["$[]"](codepoint))["$nil?"]())&&(self.escape=self.$encode_escape(self.source_buffer.$slice($rb_minus(p,1)))),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$&"](159)),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(158,$ret_or_1))codepoint=self.source_pts["$[]"]($rb_minus(p,1)),$truthy($rb_ge(self.version,30))&&($eqeq(codepoint,117)||$eqeq(codepoint,85))&&self.$diagnostic("fatal","invalid_escape"),$truthy((self.escape=$$("ESCAPES")["$[]"](codepoint))["$nil?"]())&&(self.escape=self.$encode_escape(self.source_buffer.$slice($rb_minus(p,1)))),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$&"](159)),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else{if($eqeqeq(372,$ret_or_1)){codepoint=self.source_pts["$[]"]($rb_minus(p,1)),$truthy($rb_ge(self.version,30))&&($eqeq(codepoint,117)||$eqeq(codepoint,85))&&self.$diagnostic("fatal","invalid_escape"),$truthy((self.escape=$$("ESCAPES")["$[]"](codepoint))["$nil?"]())&&(self.escape=self.$encode_escape(self.source_buffer.$slice($rb_minus(p,1)))),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$&"](159)),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),value=$truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok($rb_plus(self.ts,1)),$truthy(self["$version?"](18))?self.$emit("tINTEGER",value.$getbyte(0)):self.$emit("tCHARACTER",value),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(125,$ret_or_1))self.escape=self.source_buffer.$slice($rb_minus(p,1)).$chr(),$truthy($rb_ge(self.version,27))&&($truthy($range(0,8,!1)["$include?"](self.escape.$ord()))||$truthy($range(14,31,!1)["$include?"](self.escape.$ord())))&&self.$diagnostic("fatal","invalid_escape"),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$&"](159)),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(156,$ret_or_1))self.escape=self.source_buffer.$slice($rb_minus(p,1)).$chr(),$truthy($rb_ge(self.version,27))&&($truthy($range(0,8,!1)["$include?"](self.escape.$ord()))||$truthy($range(14,31,!1)["$include?"](self.escape.$ord())))&&self.$diagnostic("fatal","invalid_escape"),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$&"](159)),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else{if($eqeqeq(370,$ret_or_1)){self.escape=self.source_buffer.$slice($rb_minus(p,1)).$chr(),$truthy($rb_ge(self.version,27))&&($truthy($range(0,8,!1)["$include?"](self.escape.$ord()))||$truthy($range(14,31,!1)["$include?"](self.escape.$ord())))&&self.$diagnostic("fatal","invalid_escape"),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$&"](159)),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),value=$truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok($rb_plus(self.ts,1)),$truthy(self["$version?"](18))?self.$emit("tINTEGER",value.$getbyte(0)):self.$emit("tCHARACTER",value),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(132,$ret_or_1))self.escape=self.$encode_escape(self.$tok($rb_minus(p,2),p).$to_i(16)),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$&"](159)),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(163,$ret_or_1))self.escape=self.$encode_escape(self.$tok($rb_minus(p,2),p).$to_i(16)),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$&"](159)),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else{if($eqeqeq(377,$ret_or_1)){self.escape=self.$encode_escape(self.$tok($rb_minus(p,2),p).$to_i(16)),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$&"](159)),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),value=$truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok($rb_plus(self.ts,1)),$truthy(self["$version?"](18))?self.$emit("tINTEGER",value.$getbyte(0)):self.$emit("tCHARACTER",value),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(128,$ret_or_1))self.escape=self.$encode_escape(self.$tok($rb_minus(p,2),p).$to_i(16)),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$&"](159)),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(159,$ret_or_1))self.escape=self.$encode_escape(self.$tok($rb_minus(p,2),p).$to_i(16)),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$&"](159)),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else{if($eqeqeq(373,$ret_or_1)){self.escape=self.$encode_escape(self.$tok($rb_minus(p,2),p).$to_i(16)),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$&"](159)),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),value=$truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok($rb_plus(self.ts,1)),$truthy(self["$version?"](18))?self.$emit("tINTEGER",value.$getbyte(0)):self.$emit("tCHARACTER",value),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(478,$ret_or_1)){self.num_base=16,self.num_digits_s=p,self.num_suffix_s=p,self.num_xfrm=$send(self,"lambda",[],(function $$23(chars){return null==chars&&(chars=nil),(null==$$23.$$s?this:$$23.$$s).$emit("tINTEGER",chars)}),{$$arity:1,$$s:self}),self.te=p,p=$rb_minus(p,1),digits=self.$tok(self.num_digits_s,self.num_suffix_s),$truthy(digits["$end_with?"]("_".$freeze()))?self.$diagnostic("error","trailing_in_number",$hash2(["character"],{character:"_".$freeze()}),self.$range($rb_minus(self.te,1),self.te)):$truthy(digits["$empty?"]())&&$eqeq(self.num_base,8)&&$truthy(self["$version?"](18))?digits="0".$freeze():$truthy(digits["$empty?"]())?self.$diagnostic("error","empty_numeric"):$eqeq(self.num_base,8)&&$truthy(invalid_idx=digits.$index(/[89]/))&&(invalid_s=$rb_plus(self.num_digits_s,invalid_idx),self.$diagnostic("error","invalid_octal",nil,self.$range(invalid_s,$rb_plus(invalid_s,1)))),$truthy(self["$version?"](18,19,20))?(self.$emit("tINTEGER",digits.$to_i(self.num_base),self.ts,self.num_suffix_s),p=$rb_minus(self.num_suffix_s,1)):self.num_xfrm.$call(digits.$to_i(self.num_base)),p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(472,$ret_or_1)){self.num_base=10,self.num_digits_s=p,self.num_suffix_s=p,self.num_xfrm=$send(self,"lambda",[],(function $$24(chars){return null==chars&&(chars=nil),(null==$$24.$$s?this:$$24.$$s).$emit("tINTEGER",chars)}),{$$arity:1,$$s:self}),self.te=p,p=$rb_minus(p,1),digits=self.$tok(self.num_digits_s,self.num_suffix_s),$truthy(digits["$end_with?"]("_".$freeze()))?self.$diagnostic("error","trailing_in_number",$hash2(["character"],{character:"_".$freeze()}),self.$range($rb_minus(self.te,1),self.te)):$truthy(digits["$empty?"]())&&$eqeq(self.num_base,8)&&$truthy(self["$version?"](18))?digits="0".$freeze():$truthy(digits["$empty?"]())?self.$diagnostic("error","empty_numeric"):$eqeq(self.num_base,8)&&$truthy(invalid_idx=digits.$index(/[89]/))&&(invalid_s=$rb_plus(self.num_digits_s,invalid_idx),self.$diagnostic("error","invalid_octal",nil,self.$range(invalid_s,$rb_plus(invalid_s,1)))),$truthy(self["$version?"](18,19,20))?(self.$emit("tINTEGER",digits.$to_i(self.num_base),self.ts,self.num_suffix_s),p=$rb_minus(self.num_suffix_s,1)):self.num_xfrm.$call(digits.$to_i(self.num_base)),p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(475,$ret_or_1)){self.num_base=8,self.num_digits_s=p,self.num_suffix_s=p,self.num_xfrm=$send(self,"lambda",[],(function $$25(chars){return null==chars&&(chars=nil),(null==$$25.$$s?this:$$25.$$s).$emit("tINTEGER",chars)}),{$$arity:1,$$s:self}),self.te=p,p=$rb_minus(p,1),digits=self.$tok(self.num_digits_s,self.num_suffix_s),$truthy(digits["$end_with?"]("_".$freeze()))?self.$diagnostic("error","trailing_in_number",$hash2(["character"],{character:"_".$freeze()}),self.$range($rb_minus(self.te,1),self.te)):$truthy(digits["$empty?"]())&&$eqeq(self.num_base,8)&&$truthy(self["$version?"](18))?digits="0".$freeze():$truthy(digits["$empty?"]())?self.$diagnostic("error","empty_numeric"):$eqeq(self.num_base,8)&&$truthy(invalid_idx=digits.$index(/[89]/))&&(invalid_s=$rb_plus(self.num_digits_s,invalid_idx),self.$diagnostic("error","invalid_octal",nil,self.$range(invalid_s,$rb_plus(invalid_s,1)))),$truthy(self["$version?"](18,19,20))?(self.$emit("tINTEGER",digits.$to_i(self.num_base),self.ts,self.num_suffix_s),p=$rb_minus(self.num_suffix_s,1)):self.num_xfrm.$call(digits.$to_i(self.num_base)),p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(469,$ret_or_1)){self.num_base=2,self.num_digits_s=p,self.num_suffix_s=p,self.num_xfrm=$send(self,"lambda",[],(function $$26(chars){return null==chars&&(chars=nil),(null==$$26.$$s?this:$$26.$$s).$emit("tINTEGER",chars)}),{$$arity:1,$$s:self}),self.te=p,p=$rb_minus(p,1),digits=self.$tok(self.num_digits_s,self.num_suffix_s),$truthy(digits["$end_with?"]("_".$freeze()))?self.$diagnostic("error","trailing_in_number",$hash2(["character"],{character:"_".$freeze()}),self.$range($rb_minus(self.te,1),self.te)):$truthy(digits["$empty?"]())&&$eqeq(self.num_base,8)&&$truthy(self["$version?"](18))?digits="0".$freeze():$truthy(digits["$empty?"]())?self.$diagnostic("error","empty_numeric"):$eqeq(self.num_base,8)&&$truthy(invalid_idx=digits.$index(/[89]/))&&(invalid_s=$rb_plus(self.num_digits_s,invalid_idx),self.$diagnostic("error","invalid_octal",nil,self.$range(invalid_s,$rb_plus(invalid_s,1)))),$truthy(self["$version?"](18,19,20))?(self.$emit("tINTEGER",digits.$to_i(self.num_base),self.ts,self.num_suffix_s),p=$rb_minus(self.num_suffix_s,1)):self.num_xfrm.$call(digits.$to_i(self.num_base)),p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(481,$ret_or_1)){self.num_base=10,self.num_digits_s=self.ts,self.num_suffix_s=p,self.num_xfrm=$send(self,"lambda",[],(function $$27(chars){return 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$a,test,true_body,false_body,$yield=$$on_if.$$p||nil,$ret_or_1=nil;return delete $$on_if.$$p,test=null==($a=[].concat($to_a(node.$children())))[0]?nil:$a[0],true_body=null==$a[1]?nil:$a[1],false_body=null==$a[2]?nil:$a[2],$truthy(this["$skip_check_present?"](test))?this.$process($truthy($ret_or_1=true_body)?$ret_or_1:this.$s("nil")):$truthy(this["$skip_check_present_not?"](test))?this.$process($truthy($ret_or_1=false_body)?$ret_or_1:this.$s("nil")):$send2(this,$find_super(this,"on_if",$$on_if,!1,!0),"on_if",[node],$yield)}),1),$def(self,"$skip_check_present?",(function(test){var $ret_or_1;return $truthy($ret_or_1=test["$=="]($$("RUBY_ENGINE_CHECK")))?$ret_or_1:test["$=="]($$("RUBY_PLATFORM_CHECK"))}),1),$def(self,"$skip_check_present_not?",(function(test){var $ret_or_1;return $truthy($ret_or_1=test["$=="]($$("RUBY_ENGINE_CHECK_NOT")))?$ret_or_1:test["$=="]($$("RUBY_PLATFORM_CHECK_NOT"))}),1),$const_set($nesting[0],"RUBY_ENGINE_CHECK",self.$s("send",self.$s("const",nil,"RUBY_ENGINE"),"==",self.$s("str","opal"))),$const_set($nesting[0],"RUBY_ENGINE_CHECK_NOT",self.$s("send",self.$s("const",nil,"RUBY_ENGINE"),"!=",self.$s("str","opal"))),$const_set($nesting[0],"RUBY_PLATFORM_CHECK",self.$s("send",self.$s("const",nil,"RUBY_PLATFORM"),"==",self.$s("str","opal"))),$const_set($nesting[0],"RUBY_PLATFORM_CHECK_NOT",self.$s("send",self.$s("const",nil,"RUBY_PLATFORM"),"!=",self.$s("str","opal")))}($nesting[0],$$("Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/for_rewriter"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$defs=Opal.defs,$truthy=Opal.truthy,$rb_plus=Opal.rb_plus,$to_a=Opal.to_a,$send=Opal.send,$eqeqeq=Opal.eqeqeq,$def=Opal.def,$send2=Opal.send2,$find_super=Opal.find_super;return Opal.add_stubs("require,+,find,map,s,next_tmp,class,===,type,updated,<<,prepend_to_body,process,attr_reader,new,to_a,result"),self.$require("opal/rewriters/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Rewriters")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super,$parent_nesting){var self=$klass($base,$super,"ForRewriter"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return $defs(self,"$reset_tmp_counter!",(function(){return this.counter=0}),0),$defs(self,"$next_tmp",(function(){var $ret_or_1;return null==this.counter&&(this.counter=nil),this.counter=$truthy($ret_or_1=this.counter)?$ret_or_1:0,this.counter=$rb_plus(this.counter,1),"$for_tmp"+this.counter}),0),$def(self,"$on_for",(function(node){var $a,iterating_value,iterating_lvars,lvars_declared_in_body,outer_assigns,tmp_loop_variable,get_tmp_loop_variable,loop_variable_assignment,loop_variable=nil,loop_body=nil;return loop_variable=null==($a=[].concat($to_a(node)))[0]?nil:$a[0],iterating_value=null==$a[1]?nil:$a[1],loop_body=null==$a[2]?nil:$a[2],iterating_lvars=$$("LocalVariableAssigns").$find(loop_variable),lvars_declared_in_body=$$("LocalVariableAssigns").$find(loop_body),outer_assigns=$send($rb_plus(iterating_lvars,lvars_declared_in_body),"map",[],(function $$2(lvar_name){return null==lvar_name&&(lvar_name=nil),(null==$$2.$$s?this:$$2.$$s).$s("lvdeclare",lvar_name)}),{$$arity:1,$$s:this}),tmp_loop_variable=this.$class().$next_tmp(),get_tmp_loop_variable=this.$s("js_tmp",tmp_loop_variable),loop_variable_assignment=$eqeqeq("mlhs",loop_variable.$type())?loop_variable.$updated("masgn",[loop_variable,get_tmp_loop_variable]):loop_variable["$<<"](get_tmp_loop_variable),loop_body=this.$prepend_to_body(loop_body,loop_variable_assignment),(node=node.$updated("send",[iterating_value,"each",node.$updated("iter",[this.$s("args",this.$s("arg",tmp_loop_variable)),this.$process(loop_body)])])).$updated("begin",[].concat($to_a(outer_assigns)).concat([node]))}),1),function($base,$super,$parent_nesting){var self=$klass($base,$super,"LocalVariableAssigns"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return self.$attr_reader("result"),$defs(self,"$find",(function(node){var processor=nil;return(processor=this.$new()).$process(node),processor.$result().$to_a()}),1),$def(self,"$initialize",(function(){return this.result=$$("Set").$new()}),0),$def(self,"$on_lvasgn",(function $$on_lvasgn(node){var $a,name,$yield=$$on_lvasgn.$$p||nil;return delete $$on_lvasgn.$$p,name=null==($a=[].concat($to_a(node)))[0]?nil:$a[0],null==$a[1]?nil:$a[1],this.$result()["$<<"](name),$send2(this,$find_super(this,"on_lvasgn",$$on_lvasgn,!1,!0),"on_lvasgn",[node],$yield)}),1)}($nesting[0],$$("Base"),$nesting)}($nesting[0],$$("Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/explicit_writer_return"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$def=Opal.def,$const_set=Opal.const_set,$truthy=Opal.truthy,$send2=Opal.send2,$find_super=Opal.find_super,$to_a=Opal.to_a,$slice=Opal.slice,$eqeq=Opal.eqeq,$regexp=Opal.regexp,$send=Opal.send;return Opal.add_stubs("require,s,==,to_s,=~,process_all,updated"),self.$require("opal/rewriters/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Rewriters")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super,$parent_nesting){var self=$klass($base,$super,"ExplicitWriterReturn"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return self.$$prototype.in_masgn=nil,$def(self,"$initialize",(function(){return this.in_masgn=!1}),0),$const_set($nesting[0],"TMP_NAME","$writer"),$const_set($nesting[0],"GET_ARGS_NODE",self.$s("lvar",$$("TMP_NAME"))),$const_set($nesting[0],"RETURN_ARGS_NODE",self.$s("jsattr",$$("GET_ARGS_NODE"),self.$s("send",self.$s("jsattr",$$("GET_ARGS_NODE"),self.$s("str","length")),"-",self.$s("int",1)))),$def(self,"$on_send",(function $$on_send(node){var $a,recv,args,$yield=$$on_send.$$p||nil,method_name=nil,set_args_node=nil;return delete $$on_send.$$p,$truthy(this.in_masgn)?$send2(this,$find_super(this,"on_send",$$on_send,!1,!0),"on_send",[node],$yield):(recv=null==($a=[].concat($to_a(node)))[0]?nil:$a[0],method_name=null==$a[1]?nil:$a[1],args=$slice.call($a,2),$truthy(method_name.$to_s()["$=~"]($regexp([$$("REGEXP_START"),"\\w+=",$$("REGEXP_END")])))||$eqeq(method_name.$to_s(),"[]=")?(set_args_node=this.$s("lvasgn",$$("TMP_NAME"),$send(this,"s",["array"].concat($to_a(this.$process_all(args))))),this.$s("begin",set_args_node,node.$updated(nil,[recv,method_name,this.$s("splat",$$("GET_ARGS_NODE"))]),$$("RETURN_ARGS_NODE"))):$send2(this,$find_super(this,"on_send",$$on_send,!1,!0),"on_send",[node],$yield))}),1),$def(self,"$on_masgn",(function $$on_masgn(node){var result,$yield=$$on_masgn.$$p||nil;return delete $$on_masgn.$$p,this.in_masgn=!0,result=$send2(this,$find_super(this,"on_masgn",$$on_masgn,!1,!0),"on_masgn",[node],$yield),this.in_masgn=!1,result}),1)}($nesting[0],$$("Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/js_reserved_words"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$const_set=Opal.const_set,$regexp=Opal.regexp,$truthy=Opal.truthy,$defs=Opal.defs,$def=Opal.def,$range=Opal.range,$to_a=Opal.to_a,$send2=Opal.send2,$find_super=Opal.find_super,$hash2=Opal.hash2,$alias=Opal.alias;return Opal.add_stubs("require,freeze,=~,!,valid_name?,class,to_sym,valid_ivar_name?,[],to_s,updated,fix_var_name,fix_ivar_name"),self.$require("opal/rewriters/base"),self.$require("opal/regexp_anchors"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Rewriters")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super,$parent_nesting){var self=$klass($base,$super,"JsReservedWords"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return $const_set($nesting[0],"ES51_RESERVED_WORD",$regexp([$$("REGEXP_START"),"(?:do|if|in|for|let|new|try|var|case|else|enum|eval|false|null|this|true|void|with|break|catch|class|const|super|throw|while|yield|delete|export|import|public|return|static|switch|typeof|default|extends|finally|package|private|continue|debugger|function|arguments|interface|protected|implements|instanceof)",$$("REGEXP_END")]).$freeze()),$const_set($nesting[0],"ES3_RESERVED_WORD_EXCLUSIVE",$regexp([$$("REGEXP_START"),"(?:int|byte|char|goto|long|final|float|short|double|native|throws|boolean|abstract|volatile|transient|synchronized)",$$("REGEXP_END")]).$freeze()),$const_set($nesting[0],"PROTO_SPECIAL_PROPS",$regexp([$$("REGEXP_START"),"(?:constructor|displayName|__proto__|__parent__|__noSuchMethod__|__count__)",$$("REGEXP_END")]).$freeze()),$const_set($nesting[0],"PROTO_SPECIAL_METHODS",$regexp([$$("REGEXP_START"),"(?:hasOwnProperty|valueOf)",$$("REGEXP_END")]).$freeze()),$const_set($nesting[0],"IMMUTABLE_PROPS",$regexp([$$("REGEXP_START"),"(?:NaN|Infinity|undefined)",$$("REGEXP_END")]).$freeze()),$const_set($nesting[0],"BASIC_IDENTIFIER_RULES",$regexp([$$("REGEXP_START"),"[$_a-z][$_a-z\\d]*",$$("REGEXP_END")],"i").$freeze()),$const_set($nesting[0],"RESERVED_FUNCTION_NAMES",$regexp([$$("REGEXP_START"),"(?:Array)",$$("REGEXP_END")]).$freeze()),$defs(self,"$valid_name?",(function(name){var $ret_or_1,$ret_or_2=nil,$ret_or_3=nil;return $truthy($ret_or_1=$$("BASIC_IDENTIFIER_RULES")["$=~"](name))?($truthy($ret_or_2=$truthy($ret_or_3=$$("ES51_RESERVED_WORD")["$=~"](name))?$ret_or_3:$$("ES3_RESERVED_WORD_EXCLUSIVE")["$=~"](name))?$ret_or_2:$$("IMMUTABLE_PROPS")["$=~"](name))["$!"]():$ret_or_1}),1),$defs(self,"$valid_ivar_name?",(function(name){var $ret_or_1;return($truthy($ret_or_1=$$("PROTO_SPECIAL_PROPS")["$=~"](name))?$ret_or_1:$$("PROTO_SPECIAL_METHODS")["$=~"](name))["$!"]()}),1),$def(self,"$fix_var_name",(function(name){return $truthy(this.$class()["$valid_name?"](name))?name:(name+"$").$to_sym()}),1),$def(self,"$fix_ivar_name",(function(name){return $truthy(this.$class()["$valid_ivar_name?"](name.$to_s()["$[]"]($range(1,-1,!1))))?name:(name+"$").$to_sym()}),1),$def(self,"$on_lvar",(function $$on_lvar(node){var $a,name;return delete $$on_lvar.$$p,name=null==($a=[].concat($to_a(node)))[0]?nil:$a[0],null==$a[1]?nil:$a[1],node=node.$updated(nil,[this.$fix_var_name(name)]),$send2(this,$find_super(this,"on_lvar",$$on_lvar,!1,!0),"on_lvar",[node],null)}),1),$def(self,"$on_lvasgn",(function $$on_lvasgn(node){var $a,name,value;return delete $$on_lvasgn.$$p,name=null==($a=[].concat($to_a(node)))[0]?nil:$a[0],value=null==$a[1]?nil:$a[1],node=$truthy(value)?node.$updated(nil,[this.$fix_var_name(name),value]):node.$updated(nil,[this.$fix_var_name(name)]),$send2(this,$find_super(this,"on_lvasgn",$$on_lvasgn,!1,!0),"on_lvasgn",[node],null)}),1),$def(self,"$on_ivar",(function $$on_ivar(node){var $a,name;return delete $$on_ivar.$$p,name=null==($a=[].concat($to_a(node)))[0]?nil:$a[0],null==$a[1]?nil:$a[1],node=node.$updated(nil,[this.$fix_ivar_name(name)]),$send2(this,$find_super(this,"on_ivar",$$on_ivar,!1,!0),"on_ivar",[node],null)}),1),$def(self,"$on_ivasgn",(function $$on_ivasgn(node){var $a,name,value;return delete $$on_ivasgn.$$p,name=null==($a=[].concat($to_a(node)))[0]?nil:$a[0],value=null==$a[1]?nil:$a[1],node=$truthy(value)?node.$updated(nil,[this.$fix_ivar_name(name),value]):node.$updated(nil,[this.$fix_ivar_name(name)]),$send2(this,$find_super(this,"on_ivasgn",$$on_ivasgn,!1,!0),"on_ivasgn",[node],null)}),1),$def(self,"$on_restarg",(function(node){var $a,name;return name=null==($a=[].concat($to_a(node)))[0]?nil:$a[0],null==$a[1]?nil:$a[1],$truthy(name)&&(node=node.$updated(nil,[this.$fix_var_name(name)],$hash2(["meta"],{meta:$hash2(["arg_name"],{arg_name:name})}))),node}),1),$alias(self,"on_kwrestarg","on_restarg"),$def(self,"$on_argument",(function $$on_argument(node){var $a,name,value,fixed_name,new_children;return delete $$on_argument.$$p,node=$send2(this,$find_super(this,"on_argument",$$on_argument,!1,!0),"on_argument",[node],null),name=null==($a=[].concat($to_a(node)))[0]?nil:$a[0],value=null==$a[1]?nil:$a[1],fixed_name=this.$fix_var_name(name),new_children=$truthy(value)?[fixed_name,value]:[fixed_name],node.$updated(nil,new_children,$hash2(["meta"],{meta:$hash2(["arg_name"],{arg_name:name})}))}),1)}($nesting[0],$$("Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/block_to_iter"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$to_a=Opal.to_a,$rb_plus=Opal.rb_plus,$def=Opal.def;return Opal.add_stubs("require,s,process,updated,+,children"),self.$require("opal/rewriters/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Rewriters")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"BlockToIter");return $def(self,"$on_block",(function(node){var $a,args,body,iter_node,recvr=nil;return recvr=null==($a=[].concat($to_a(node)))[0]?nil:$a[0],args=null==$a[1]?nil:$a[1],body=null==$a[2]?nil:$a[2],iter_node=this.$s("iter",args,body),this.$process(recvr.$updated(nil,$rb_plus(recvr.$children(),[iter_node])))}),1)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/dot_js_syntax"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$to_a=Opal.to_a,$slice=Opal.slice,$eqeq=Opal.eqeq,$truthy=Opal.truthy,$eqeqeq=Opal.eqeqeq,$neqeq=Opal.neqeq,$send2=Opal.send2,$find_super=Opal.find_super,$def=Opal.def,$send=Opal.send;return Opal.add_stubs("require,==,type,===,!=,size,error,first,to_js_attr_call,to_js_attr_assign_call,to_native_js_call,s"),self.$require("opal/rewriters/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Rewriters")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"DotJsSyntax");return $def(self,"$on_send",(function $$on_send(node){var $a,meth,$yield=$$on_send.$$p||nil,recv=nil,args=nil,recv_of_recv=nil,meth_of_recv=nil,$ret_or_1=nil,property=nil,value=nil;return delete $$on_send.$$p,recv=null==($a=[].concat($to_a(node)))[0]?nil:$a[0],meth=null==$a[1]?nil:$a[1],args=$slice.call($a,2),$truthy(recv)&&$eqeq(recv.$type(),"send")?(recv_of_recv=null==($a=[].concat($to_a(recv)))[0]?nil:$a[0],meth_of_recv=null==$a[1]?nil:$a[1],null==$a[2]?nil:$a[2],$eqeq(meth_of_recv,"JS")?($eqeqeq("[]",$ret_or_1=meth)?($neqeq(args.$size(),1)&&this.$error(".JS[:property] syntax supports only one argument"),property=args.$first(),node=this.$to_js_attr_call(recv_of_recv,property)):$eqeqeq("[]=",$ret_or_1)?($neqeq(args.$size(),2)&&this.$error(".JS[:property]= syntax supports only two arguments"),property=null==($a=[].concat($to_a(args)))[0]?nil:$a[0],value=null==$a[1]?nil:$a[1],node=this.$to_js_attr_assign_call(recv_of_recv,property,value)):node=this.$to_native_js_call(recv_of_recv,meth,args),$send2(this,$find_super(this,"on_send",$$on_send,!1,!0),"on_send",[node],null)):$send2(this,$find_super(this,"on_send",$$on_send,!1,!0),"on_send",[node],$yield)):$send2(this,$find_super(this,"on_send",$$on_send,!1,!0),"on_send",[node],$yield)}),1),$def(self,"$to_native_js_call",(function(recv,meth,args){return $send(this,"s",["jscall",recv,meth].concat($to_a(args)))}),3),$def(self,"$to_js_attr_call",(function(recv,property){return this.$s("jsattr",recv,property)}),2),$def(self,"$to_js_attr_assign_call",(function(recv,property,value){return this.$s("jsattrasgn",recv,property,value)}),3)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/pattern_matching"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$def=Opal.def,$to_a=Opal.to_a,$rb_plus=Opal.rb_plus,$slice=Opal.slice,$truthy=Opal.truthy,$send=Opal.send,$eqeqeq=Opal.eqeqeq,$not=Opal.not,$neqeq=Opal.neqeq,$eqeq=Opal.eqeq,$alias=Opal.alias,$Opal=Opal.Opal;return Opal.add_stubs("require,s,convert_full_pattern,raise_no_matching_pattern_error,+,process,single_case_match,private,shift,===,type,!,empty?,!=,==,class,new,run!,variables,pattern,map,<<,array,on_literal,first,children,to_proc,method,each,to_ast,on_array_pattern,compact,[]"),self.$require("opal/rewriters/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var 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self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$module=Opal.module,$klass=Opal.klass,$def=Opal.def,$send2=Opal.send2,$find_super=Opal.find_super,$to_a=Opal.to_a,$truthy=Opal.truthy,$eqeq=Opal.eqeq,$Opal=Opal.Opal;return Opal.add_stubs("require,new,include?,type,<<,==,process_regular_node,updated,inspect,warn"),self.$require("opal/rewriters/base"),self.$require("set"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Rewriters")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Hashes")].concat($parent_nesting);return function($base,$super,$parent_nesting){var self=$klass($base,$super,"KeyDuplicatesRewriter"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return self.$$prototype.keys=nil,$def(self,"$initialize",(function(){return this.keys=$$("UniqKeysSet").$new()}),0),$def(self,"$on_hash",(function 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function($base,$parent_nesting){var $nesting=[$module($base,"Rewriters")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"DumpArgs");return $def(self,"$on_def",(function $$on_def(node){var $a,args;return delete $$on_def.$$p,node=$send2(this,$find_super(this,"on_def",$$on_def,!1,!0),"on_def",[node],null),null==($a=[].concat($to_a(node)))[0]?nil:$a[0],args=null==$a[1]?nil:$a[1],null==$a[2]?nil:$a[2],node.$updated(nil,nil,$hash2(["meta"],{meta:$hash2(["original_args"],{original_args:args})}))}),1),$def(self,"$on_defs",(function $$on_defs(node){var $a,args;return delete $$on_defs.$$p,node=$send2(this,$find_super(this,"on_defs",$$on_defs,!1,!0),"on_defs",[node],null),null==($a=[].concat($to_a(node)))[0]?nil:$a[0],null==$a[1]?nil:$a[1],args=null==$a[2]?nil:$a[2],null==$a[3]?nil:$a[3],node.$updated(nil,nil,$hash2(["meta"],{meta:$hash2(["original_args"],{original_args:args})}))}),1),$def(self,"$on_iter",(function $$on_iter(node){var 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$ret_or_1,$ret_or_2=nil;return $truthy($ret_or_1=$truthy($ret_or_2=this.restarg["$nil?"]()["$!"]())?$ret_or_2:this.postargs["$any?"]())?$ret_or_1:$truthy($ret_or_2=this["$has_any_kwargs?"]())?this["$can_inline_kwargs?"]()["$!"]():$ret_or_2}),0),$def(self,"$has_any_kwargs?",(function(){var $ret_or_1,$ret_or_2;return $truthy($ret_or_1=$truthy($ret_or_2=this.kwargs["$any?"]())?$ret_or_2:this.kwoptargs["$any?"]())?$ret_or_1:this.kwrestarg["$nil?"]()["$!"]()}),0),$def(self,"$can_inline_kwargs?",(function(){var $ret_or_1,$ret_or_2;return $truthy($ret_or_1=$truthy($ret_or_2=this.optargs["$empty?"]())?this.restarg["$nil?"]():$ret_or_2)?this.postargs["$empty?"]():$ret_or_1}),0)}([$module($base,"Rewriters")].concat($parent_nesting)[0])}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/inline_args"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$to_a=Opal.to_a,$truthy=Opal.truthy,$hash2=Opal.hash2,$def=Opal.def,$const_set=Opal.const_set,$send=Opal.send,$eqeq=Opal.eqeq,$Opal=Opal.Opal;return Opal.add_stubs("require,s,new,updated,inline,prepend_to_body,initialization,attr_reader,freeze,children,each,send,any?,blockarg,<<,shadowargs,args,==,[],has_post_args?,length,has_any_kwargs?,can_inline_kwargs?,kwargs,kwoptargs,kwrestarg,postargs,optargs,args_to_keep,restarg"),self.$require("opal/rewriters/base"),self.$require("opal/rewriters/arguments"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Rewriters")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super,$parent_nesting){var 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Opal.add_stubs("attr_accessor,all_errors_are_fatal=,diagnostics,-,ignore_warnings=,diagnostics_consumer,consumer=,extend,diagnostics_consumer=,new,rewrite,process,default_parser,default_parser_class"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var self=$module($base,"Parser"),$nesting=[self].concat($parent_nesting);return function($base,$parent_nesting){var self=$module($base,"DefaultConfig"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);(function($base){var self=$module($base,"ClassMethods");self.$attr_accessor("diagnostics_consumer"),$def(self,"$default_parser",(function $$default_parser(){var $yield=$$default_parser.$$p||nil,parser=nil,$writer=nil;return delete 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null==block_name&&(block_name=nil),scope_name=this.$scope().$identity(),$truthy(block_name)&&($send(this,"block_name=",$to_a($writer=[block_name])),$writer[$rb_minus($writer.length,1)]),this.$add_temp(this.$block_name()+" = "+scope_name+".$$p || nil"),$truthy(this.block_prepared)?nil:(this.$line("delete "+scope_name+".$$p;"),this.block_prepared=!0)}),-1),self.$attr_accessor("await_encountered")}($nesting[0],$$("Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/module"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$to_ary=Opal.to_ary,$truthy=Opal.truthy,$send=Opal.send,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$rb_plus=Opal.rb_plus,$def=Opal.def;return Opal.add_stubs("require,handle,children,name_and_base,helper,nil?,body,stmt?,unshift,line,in_scope,name=,scope,-,compile_body,await_encountered,await_encountered=,parent,+,nesting,private,cid,expr,stmt,returns,compiler,empty_line,add_temp,to_vars"),self.$require("opal/nodes/scope"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"ModuleNode"),$proto=self.$$prototype;return $proto.define_nesting=$proto.define_relative_access=nil,self.$handle("module"),self.$children("cid","body"),$def(self,"$compile",(function(){var $a,$b,name,base,await_begin=nil,await_end=nil,async=nil,$writer=nil;return 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self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$to_ary=Opal.to_ary,$truthy=Opal.truthy,$send=Opal.send,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$rb_plus=Opal.rb_plus,$def=Opal.def;return Opal.add_stubs("require,handle,children,name_and_base,helper,nil?,body,stmt?,unshift,super_code,line,in_scope,name=,scope,-,compile_body,await_encountered,await_encountered=,parent,+,nesting,sup,expr"),self.$require("opal/nodes/module"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"ClassNode");return self.$$prototype.define_nesting=nil,self.$handle("class"),self.$children("cid","sup","body"),$def(self,"$compile",(function(){var $a,$b,name,base,await_begin=nil,await_end=nil,async=nil,$writer=nil;return $b=this.$name_and_base(),$a=$to_ary($b),name=null==$a[0]?nil:$a[0],base=null==$a[1]?nil:$a[1],this.$helper("klass"),$truthy(this.$body()["$nil?"]())?$truthy(this["$stmt?"]())?this.$unshift("$klass(",base,", ",this.$super_code(),", '"+name+"')"):this.$unshift("($klass(",base,", ",this.$super_code(),", '"+name+"'), nil)"):(this.$line("  var self = $klass($base, $super, '"+name+"');"),$send(this,"in_scope",[],(function $$1(){var $writer,self=null==$$1.$$s?this:$$1.$$s;return $writer=[name],$send(self.$scope(),"name=",$to_a($writer)),$rb_minus($writer.length,1),self.$compile_body()}),{$$arity:0,$$s:this}),$truthy(this.$await_encountered())?(await_begin="(await ",await_end=")",async="async ",$writer=[!0],$send(this.$parent(),"await_encountered=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]):(await_begin=($a=["","",""])[0],await_end=$a[1],async=$a[2]),this.$unshift(await_begin+"("+async+"function($base, $super"+($truthy(this.define_nesting)?", $parent_nesting":nil)+") {"),this.$line("})(",base,", ",this.$super_code(),($truthy(this.define_nesting)?$rb_plus(", ",this.$scope().$nesting()):nil)+")"+await_end))}),0),$def(self,"$super_code",(function(){return $truthy(this.$sup())?this.$expr(this.$sup()):"null"}),0)}($nesting[0],$$("ModuleNode"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/singleton_class"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$send=Opal.send,$truthy=Opal.truthy,$def=Opal.def;return Opal.add_stubs("require,handle,children,push,in_scope,stmt,returns,compiler,body,add_temp,line,to_vars,scope,recv,object,nesting"),self.$require("opal/nodes/scope"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"SingletonClassNode");return self.$handle("sclass"),self.$children("object","body"),$def(self,"$compile",(function(){return this.$push("(function(self, $parent_nesting) {"),$send(this,"in_scope",[],(function $$1(){var body_stmt,self=null==$$1.$$s?this:$$1.$$s;return null==self.define_nesting&&(self.define_nesting=nil),null==self.define_relative_access&&(self.define_relative_access=nil),body_stmt=self.$stmt(self.$compiler().$returns(self.$body())),$truthy(self.define_nesting)&&self.$add_temp("$nesting = [self].concat($parent_nesting)"),$truthy(self.define_relative_access)&&self.$add_temp("$$ = Opal.$r($nesting)"),self.$line(self.$scope().$to_vars()),self.$line(body_stmt)}),{$$arity:0,$$s:this}),this.$line("})(Opal.get_singleton_class(",this.$recv(this.$object()),"), "+this.$scope().$nesting()+")")}),0)}($nesting[0],$$("ScopeNode"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/arg"]=function(Opal){var self=Opal.top,$nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass,$def=Opal.def;return Opal.add_stubs("require,handle,children,add_arg,scope,name,push,to_s"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Args")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"ArgNode");return self.$handle("arg"),self.$children("name"),$def(self,"$compile",(function(){return this.$scope().$add_arg(this.$name()),this.$push(this.$name().$to_s())}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/arity_check"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$to_a=Opal.to_a,$def=Opal.def,$send=Opal.send,$rb_minus=Opal.rb_minus,$truthy=Opal.truthy,$not=Opal.not,$rb_lt=Opal.rb_lt,$rb_plus=Opal.rb_plus,$rb_gt=Opal.rb_gt;return Opal.add_stubs("require,handle,children,new,args_node,args,optargs,restarg,postargs,kwargs,kwoptargs,kwrestarg,kwnilarg,arity,arity=,scope,-,arity_check?,compiler,empty?,arity_checks,helper,inspect,to_s,mid,line,push,join,compact,size,all_args,!,-@,<,+,>,<<,has_only_optional_kwargs?,any?,negative_arity,positive_arity,select,include?,type,has_required_kwargs?,all?,==,def?,class_scope?,top?,parent,class?,name,module?,identity"),self.$require("opal/nodes/base"),self.$require("opal/rewriters/arguments"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super,$parent_nesting){var self=$klass($base,$super,"ArityCheckNode"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;$proto.kwargs=$proto.kwoptargs=$proto.kwrestarg=$proto.all_args=$proto.args=$proto.optargs=$proto.restarg=$proto.postargs=$proto.arity_checks=nil,self.$handle("arity_check"),self.$children("args_node"),$def(self,"$initialize",(function $$initialize($a){var $rest_arg,$yield=$$initialize.$$p||nil,self=this,arguments$=nil;return delete 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}")):nil}),0),$def(self,"$kwargs",(function(){return[].concat($to_a(this.kwargs)).concat($to_a(this.kwoptargs)).concat([this.kwrestarg]).$compact()}),0),$def(self,"$all_args",(function(){var $ret_or_1;return this.all_args=$truthy($ret_or_1=this.all_args)?$ret_or_1:[].concat($to_a(this.args)).concat($to_a(this.optargs)).concat([this.restarg]).concat($to_a(this.postargs)).concat($to_a(this.$kwargs())).$compact()}),0),$def(self,"$arity_checks",(function(){var $a,arity=nil,min_arity=nil,max_arity=nil;return 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result=$send(this.$all_args(),"select",[],(function(arg){return null==arg&&(arg=nil),["arg","mlhs"]["$include?"](arg.$type())}),1).$size(),$truthy(this["$has_required_kwargs?"]())&&(result=$rb_plus(result,1)),result=$rb_minus(result["$-@"](),1)}),0),$def(self,"$positive_arity",(function(){var result=nil;return result=this.$all_args().$size(),result=$rb_minus(result,this.$kwargs().$size()),$truthy(this.$kwargs()["$any?"]())&&(result=$rb_plus(result,1)),result}),0),$def(self,"$has_only_optional_kwargs?",(function(){var $ret_or_1;return $truthy($ret_or_1=this.$kwargs()["$any?"]())?$send(this.$kwargs(),"all?",[],(function(arg){return null==arg&&(arg=nil),["kwoptarg","kwrestarg"]["$include?"](arg.$type())}),1):$ret_or_1}),0),$def(self,"$has_required_kwargs?",(function(){return $send(this.$kwargs(),"any?",[],(function(arg){return null==arg&&(arg=nil),arg.$type()["$=="]("kwarg")}),1)}),0)}($nesting[0],$$("Base"),$nesting),function($base,$super){var self=$klass($base,$super,"IterArityCheckNode");return self.$handle("iter_arity_check"),$def(self,"$compile",(function(){var $writer,parent_scope=nil,$ret_or_1=nil,$ret_or_2=nil,context=nil,identity=nil;if($writer=[this.$arity()],$send(this.$scope(),"arity=",$to_a($writer)),$rb_minus($writer.length,1),!$truthy(this.$compiler()["$arity_check?"]()))return nil;if($truthy(this.$arity_checks()["$empty?"]()))return nil;for(parent_scope=this.$scope();!$truthy($truthy($ret_or_1=$truthy($ret_or_2=parent_scope["$def?"]())?$ret_or_2:parent_scope["$class_scope?"]())?$ret_or_1:parent_scope["$top?"]());)parent_scope=parent_scope.$parent();return context=$truthy(parent_scope["$top?"]())?"'<main>'":$truthy(parent_scope["$def?"]())?"'"+parent_scope.$mid()+"'":$truthy(parent_scope["$class?"]())?"'<class:"+parent_scope.$name()+">'":$truthy(parent_scope["$module?"]())?"'<module:"+parent_scope.$name()+">'":nil,identity=this.$scope().$identity(),this.$line("if ("+identity+".$$is_lambda || 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self.$handle("ensure_kwargs_are_kwargs"),$def(self,"$compile",(function(){return this.$helper("hash2"),this.$line("if ($kwargs == null) {"),this.$line("  $kwargs = $hash2([], {});"),this.$line("} else if (!$kwargs.$$is_hash) {"),this.$line("  throw Opal.ArgumentError.$new('expected kwargs');"),this.$line("}")}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/extract_block_arg"]=function(Opal){var self=Opal.top,$nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass,$def=Opal.def;return Opal.add_stubs("require,handle,children,uses_block!,scope,add_arg,name,prepare_block"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Args")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"ExtractBlockarg");return self.$handle("extract_blockarg"),self.$children("name"),$def(self,"$compile",(function(){return this.$scope()["$uses_block!"](),this.$scope().$add_arg(this.$name()),this.$scope().$prepare_block(this.$name())}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/extract_kwarg"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$def=Opal.def;return Opal.add_stubs("require,handle,children,[],meta,<<,used_kwargs,scope,add_temp,lvar_name,line,inspect,to_s"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Args")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"ExtractKwarg");return self.$$prototype.sexp=nil,self.$handle("extract_kwarg"),self.$children("lvar_name"),$def(self,"$compile",(function(){var key_name=nil;return key_name=this.sexp.$meta()["$[]"]("arg_name"),this.$scope().$used_kwargs()["$<<"](key_name),this.$add_temp(this.$lvar_name()),this.$line("if (!Opal.hasOwnProperty.call($kwargs.$$smap, '"+key_name+"')) {"),this.$line("  throw Opal.ArgumentError.$new('missing keyword: "+key_name+"');"),this.$line("}"),this.$line(this.$lvar_name()+" = $kwargs.$$smap["+key_name.$to_s().$inspect()+"];")}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/extract_kwargs"]=function(Opal){var self=Opal.top,$nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass,$def=Opal.def;return Opal.add_stubs("require,handle,add_temp,line"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Args")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"ExtractKwargs");return self.$handle("extract_kwargs"),$def(self,"$compile",(function(){return this.$add_temp("$kwargs"),this.$line("$kwargs = Opal.extract_kwargs($post_args)")}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/extract_kwoptarg"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$eqeq=Opal.eqeq,$def=Opal.def;return Opal.add_stubs("require,handle,children,[],meta,<<,used_kwargs,scope,add_temp,lvar_name,line,inspect,to_s,==,default_value,expr"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Args")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"ExtractKwoptarg");return self.$$prototype.sexp=nil,self.$handle("extract_kwoptarg"),self.$children("lvar_name","default_value"),$def(self,"$compile",(function(){var key_name=nil;return key_name=this.sexp.$meta()["$[]"]("arg_name"),this.$scope().$used_kwargs()["$<<"](key_name),this.$add_temp(this.$lvar_name()),this.$line(this.$lvar_name()+" = $kwargs.$$smap["+key_name.$to_s().$inspect()+"];"),$eqeq(this.$default_value().$children()["$[]"](1),"undefined")?nil:this.$line("if ("+this.$lvar_name()+" == null) "+this.$lvar_name()+" = ",this.$expr(this.$default_value()))}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/extract_kwrestarg"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$def=Opal.def,$send=Opal.send;return Opal.add_stubs("require,handle,children,name,add_temp,line,used_kwargs,map,scope,join"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Args")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"ExtractKwrestarg");return self.$handle("extract_kwrestarg"),self.$children("name"),$def(self,"$compile",(function(){var name,$ret_or_1;return name=$truthy($ret_or_1=this.$name())?$ret_or_1:"$kw_rest_arg",this.$add_temp(name),this.$line(name+" = Opal.kwrestargs($kwargs, "+this.$used_kwargs()+");")}),0),$def(self,"$used_kwargs",(function(){return"{"+$send(this.$scope().$used_kwargs(),"map",[],(function(arg_name){return null==arg_name&&(arg_name=nil),"'"+arg_name+"': true"}),1).$join(",")+"}"}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/extract_optarg"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$eqeq=Opal.eqeq,$def=Opal.def;return Opal.add_stubs("require,handle,children,==,[],default_value,line,name,expr"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Args")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"ExtractOptargNode");return self.$handle("extract_optarg"),self.$children("name","default_value"),$def(self,"$compile",(function(){return $eqeq(this.$default_value().$children()["$[]"](1),"undefined")?nil:this.$line("if ("+this.$name()+" == null) "+this.$name()+" = ",this.$expr(this.$default_value()),";")}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/extract_post_arg"]=function(Opal){var self=Opal.top,$nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass,$def=Opal.def;return Opal.add_stubs("require,handle,children,add_temp,name,line"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Args")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"ExtractPostArg");return self.$handle("extract_post_arg"),self.$children("name"),$def(self,"$compile",(function(){return this.$add_temp(this.$name()),this.$line(this.$name()+" = $post_args.shift();"),this.$line("if ("+this.$name()+" == null) "+this.$name()+" = nil;")}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/extract_post_optarg"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$eqeq=Opal.eqeq,$def=Opal.def;return Opal.add_stubs("require,handle,children,add_temp,name,line,args_to_keep,==,[],default_value,expr"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Args")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"ExtractPostOptarg");return self.$handle("extract_post_optarg"),self.$children("name","default_value","args_to_keep"),$def(self,"$compile",(function(){return this.$add_temp(this.$name()),this.$line("if ($post_args.length > "+this.$args_to_keep()+") "+this.$name()+" = $post_args.shift();"),$eqeq(this.$default_value().$children()["$[]"](1),"undefined")?nil:this.$line("if ("+this.$name()+" == null) "+this.$name()+" = ",this.$expr(this.$default_value()),";")}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/extract_restarg"]=function(Opal){var self=Opal.top,$nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass,$truthy=Opal.truthy,$eqeq=Opal.eqeq,$def=Opal.def;return Opal.add_stubs("require,handle,children,name,add_temp,==,args_to_keep,line"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Args")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"ExtractRestarg");return self.$handle("extract_restarg"),self.$children("name","args_to_keep"),$def(self,"$compile",(function(){var name,$ret_or_1;return name=$truthy($ret_or_1=this.$name())?$ret_or_1:"$rest_arg",this.$add_temp(name),$eqeq(this.$args_to_keep(),0)?this.$line(name+" = $post_args;"):this.$line(name+" = $post_args.splice(0, $post_args.length - "+this.$args_to_keep()+");")}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/fake_arg"]=function(Opal){var self=Opal.top,$nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass,$def=Opal.def;return Opal.add_stubs("require,handle,next_temp,scope,add_arg,push"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Args")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"FakeArgNode");return self.$handle("fake_arg"),$def(self,"$compile",(function(){var name;return name=this.$scope().$next_temp(),this.$scope().$add_arg(name),this.$push(name)}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/initialize_iterarg"]=function(Opal){var self=Opal.top,$nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass,$def=Opal.def;return Opal.add_stubs("require,handle,children,line,name"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Args")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"InitializeIterarg");return self.$handle("initialize_iter_arg"),self.$children("name"),$def(self,"$compile",(function(){return this.$line("if ("+this.$name()+" == null) "+this.$name()+" = nil;")}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/initialize_shadowarg"]=function(Opal){var self=Opal.top,$nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass,$def=Opal.def;return Opal.add_stubs("require,handle,children,<<,locals,scope,name,add_arg,line"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Args")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"InitializeShadowarg");return self.$handle("initialize_shadowarg"),self.$children("name"),$def(self,"$compile",(function(){return this.$scope().$locals()["$<<"](this.$name()),this.$scope().$add_arg(this.$name()),this.$line(this.$name()+" = nil;")}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/parameters"]=function(Opal){var $nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$def=Opal.def,$send=Opal.send,$to_a=Opal.to_a,$truthy=Opal.truthy,$eqeq=Opal.eqeq;return Opal.add_stubs("children,map,public_send,type,join,compact,=="),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting);return function($base,$parent_nesting){return function($base,$super){var self=$klass($base,null,"Parameters");return self.$$prototype.args=nil,$def(self,"$initialize",(function(args){return this.args=args.$children()}),1),$def(self,"$to_code",(function(){return"["+$send(this.args,"map",[],(function $$1(arg){return null==arg&&(arg=nil),$send(null==$$1.$$s?this:$$1.$$s,"public_send",["on_"+arg.$type()].concat($to_a(arg)))}),{$$arity:1,$$s:this}).$compact().$join(", ")+"]"}),0),$def(self,"$on_arg",(function(arg_name){return"['req', '"+arg_name+"']"}),1),$def(self,"$on_mlhs",(function($a){return Opal.slice.call(arguments),"['req']"}),-1),$def(self,"$on_optarg",(function(arg_name,_default_value){return"['opt', '"+arg_name+"']"}),2),$def(self,"$on_restarg",(function(arg_name){return null==arg_name&&(arg_name=nil),$truthy(arg_name)?($eqeq(arg_name,"fwd_rest_arg")&&(arg_name="*"),"['rest', '"+arg_name+"']"):"['rest']"}),-1),$def(self,"$on_kwarg",(function(arg_name){return"['keyreq', '"+arg_name+"']"}),1),$def(self,"$on_kwoptarg",(function(arg_name,_default_value){return"['key', 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$nesting=[$module($base,"Nodes")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Args")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"PreparePostArgs");return self.$handle("prepare_post_args"),self.$children("offset"),$def(self,"$compile",(function(){return this.$add_temp("$post_args"),$eqeq(this.$offset(),0)?this.$line("$post_args = Opal.slice.call(arguments)"):this.$line("$post_args = Opal.slice.call(arguments, "+this.$offset()+")")}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$hash2=Opal.hash2,$send=Opal.send,$truthy=Opal.truthy,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$rb_plus=Opal.rb_plus,$rb_gt=Opal.rb_gt,$neqeq=Opal.neqeq,$def=Opal.def;return Opal.add_stubs("require,handle,each_with_index,children,multiple_underscore?,[],[]=,-,+,>,s,type,!=,push,process,==,count,start_with?,to_s,first"),self.$require("opal/nodes/base"),self.$require("opal/nodes/args/arg"),self.$require("opal/nodes/args/arity_check"),self.$require("opal/nodes/args/ensure_kwargs_are_kwargs"),self.$require("opal/nodes/args/extract_block_arg"),self.$require("opal/nodes/args/extract_kwarg"),self.$require("opal/nodes/args/extract_kwargs"),self.$require("opal/nodes/args/extract_kwoptarg"),self.$require("opal/nodes/args/extract_kwrestarg"),self.$require("opal/nodes/args/extract_optarg"),self.$require("opal/nodes/args/extract_post_arg"),self.$require("opal/nodes/args/extract_post_optarg"),self.$require("opal/nodes/args/extract_restarg"),self.$require("opal/nodes/args/fake_arg"),self.$require("opal/nodes/args/initialize_iterarg"),self.$require("opal/nodes/args/initialize_shadowarg"),self.$require("opal/nodes/args/parameters"),self.$require("opal/nodes/args/prepare_post_args"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"ArgsNode");return self.$handle("args"),$def(self,"$compile",(function(){var same_arg_counter=nil;return same_arg_counter=$hash2([],{}),$send(this.$children(),"each_with_index",[],(function $$1(arg,idx){var self=null==$$1.$$s?this:$$1.$$s,$writer=nil;return null==arg&&(arg=nil),null==idx&&(idx=nil),$truthy(self["$multiple_underscore?"](arg))&&($truthy(same_arg_counter["$[]"](arg))||($send(same_arg_counter,"[]=",$to_a($writer=[arg,0])),$writer[$rb_minus($writer.length,1)]),$writer=[arg,$rb_plus(same_arg_counter["$[]"](arg),1)],$send(same_arg_counter,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],$truthy($rb_gt(same_arg_counter["$[]"](arg),1))&&(arg=self.$s(arg.$type(),arg.$children()["$[]"](0)+"_$"+same_arg_counter["$[]"](arg)))),$neqeq(idx,0)&&self.$push(", "),self.$push(self.$process(arg))}),{$$arity:2,$$s:this})}),0),$def(self,"$multiple_underscore?",(function(arg){var $ret_or_1,$ret_or_2,$ret_or_3;return $truthy($ret_or_1=$truthy($ret_or_2=$truthy($ret_or_3=arg.$type()["$=="]("arg"))?arg.$children().$count()["$=="](1):$ret_or_3)?arg.$children().$first().$to_s()["$start_with?"]("_"):$ret_or_2)?$rb_gt(this.$children().$count(arg),1):$ret_or_1}),1)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/node_with_args"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$to_a=Opal.to_a,$def=Opal.def,$truthy=Opal.truthy;return Opal.add_stubs("require,attr_reader,attr_accessor,[],meta,s,original_args,push,process,arity_check_node,uses_block?,scope,prepare_block,to_code,new"),self.$require("opal/nodes/scope"),self.$require("opal/nodes/args/parameters"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super,$parent_nesting){var self=$klass($base,$super,"NodeWithArgs"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return self.$$prototype.sexp=nil,self.$attr_reader("used_kwargs"),self.$attr_accessor("arity"),self.$attr_reader("original_args"),$def(self,"$initialize",(function $$initialize($a){var $rest_arg,$yield=$$initialize.$$p||nil,self=this;return delete $$initialize.$$p,$rest_arg=Opal.slice.call(arguments),$send2(self,$find_super(self,"initialize",$$initialize,!1,!0),"initialize",$to_a($rest_arg),$yield),self.original_args=self.sexp.$meta()["$[]"]("original_args"),self.used_kwargs=[],self.arity=0}),-1),$def(self,"$arity_check_node",(function(){return this.$s("arity_check",this.$original_args())}),0),$def(self,"$compile_arity_check",(function(){return this.$push(this.$process(this.$arity_check_node()))}),0),$def(self,"$compile_block_arg",(function(){return $truthy(this.$scope()["$uses_block?"]())?this.$scope().$prepare_block():nil}),0),$def(self,"$parameters_code",(function(){return $$$($$("Args"),"Parameters").$new(this.$original_args()).$to_code()}),0)}($nesting[0],$$("ScopeNode"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/iter"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send,$eqeq=Opal.eqeq,$rb_gt=Opal.rb_gt,$def=Opal.def;return Opal.add_stubs("require,handle,children,lambda_definition?,scope,is_lambda!,in_scope,identify!,process,inline_args,compile_arity_check,stmt,returned_body,add_temp,to_vars,line,catch_return,unshift,push,await_encountered,<<,arity,self,contains_break?,arity_check?,compiler,parameters_code,has_top_level_mlhs_arg?,has_trailing_comma_in_args?,==,length,>,join,nesting,relative_access,block_arg,prepare_block,each,args,first,updated,body,returns,s,any?,original_args,type,expression,loc,source,match,new,found_break?"),self.$require("opal/nodes/node_with_args"),self.$require("opal/rewriters/break_finder"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super,$parent_nesting){var self=$klass($base,$super,"IterNode"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;return 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throw $returner; }")):nil}),{$$arity:0,$$s:this}),this.$unshift(to_vars),$truthy(this.$await_encountered())?this.$unshift("async function "+identity+"(",inline_params,"){"):this.$unshift("function "+identity+"(",inline_params,"){"),this.$push("}"),(blockopts=[])["$<<"]("$$arity: "+this.$arity()),$truthy(this.define_self)&&blockopts["$<<"]("$$s: "+this.$scope().$self()),$truthy(this["$contains_break?"]())&&blockopts["$<<"]("$$brk: $brk"),$truthy(this.$compiler()["$arity_check?"]())&&blockopts["$<<"]("$$parameters: "+this.$parameters_code()),$truthy(this["$has_top_level_mlhs_arg?"]())&&blockopts["$<<"]("$$has_top_level_mlhs_arg: true"),$truthy(this["$has_trailing_comma_in_args?"]())&&blockopts["$<<"]("$$has_trailing_comma_in_args: true"),$eqeq(blockopts.$length(),1)?this.$push(", "+this.$arity()):$truthy($rb_gt(blockopts.$length(),1))&&this.$push(", {",blockopts.$join(", "),"}"),$truthy(this.define_nesting)&&this.$scope().$nesting(),$truthy(this.define_relative_access)?this.$scope().$relative_access():nil}),0),$def(self,"$compile_block_arg",(function(){return $truthy(this.$block_arg())?this.$scope().$prepare_block():nil}),0),$def(self,"$extract_underscore_args",(function(){var valid_args=nil,caught_blank_argument=nil;return valid_args=[],caught_blank_argument=!1,$send(this.$args().$children(),"each",[],(function(arg){var arg_name;return null==arg&&(arg=nil),arg_name=arg.$children().$first(),$eqeq(arg_name,"_")?$truthy(caught_blank_argument)?nil:(caught_blank_argument=!0,valid_args["$<<"](arg)):valid_args["$<<"](arg)}),1),this.sexp=this.sexp.$updated(nil,[this.$args().$updated(nil,valid_args),this.$body()])}),0),$def(self,"$returned_body",(function(){var $ret_or_1;return this.$compiler().$returns($truthy($ret_or_1=this.$body())?$ret_or_1:this.$s("nil"))}),0),$def(self,"$has_top_level_mlhs_arg?",(function(){return $send(this.$original_args().$children(),"any?",[],(function(arg){return null==arg&&(arg=nil),arg.$type()["$=="]("mlhs")}),1)}),0),$def(self,"$has_trailing_comma_in_args?",(function(){return $truthy(this.$original_args().$loc())&&$truthy(this.$original_args().$loc().$expression())?this.$original_args().$loc().$expression().$source().$match(/,\s*\|/):nil}),0),$def(self,"$arity_check_node",(function(){return this.$s("iter_arity_check",this.$original_args())}),0),$def(self,"$contains_break?",(function(){var finder=nil;return(finder=$$$($$$($$("Opal"),"Rewriters"),"BreakFinder").$new()).$process(this.sexp),finder["$found_break?"]()}),0)}($nesting[0],$$("NodeWithArgs"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/def"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$send=Opal.send,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$eqeq=Opal.eqeq,$truthy=Opal.truthy,$rb_gt=Opal.rb_gt,$def=Opal.def,$rb_plus=Opal.rb_plus;return Opal.add_stubs("require,handle,children,in_scope,mid,mid=,scope,-,==,type,defs=,identify!,identity,block_name=,process,inline_args,stmt,returns,compiler,stmts,compile_block_arg,add_temp,compile_arity_check,unshift,current_indent,to_vars,line,catch_return,push,await_encountered,<<,arity,arity_check?,parameters_code,parse_comments?,comments_code,enable_source_location?,source_location,length,>,join,wrap_with_definition,nesting,relative_access,helper,wrap,self,expr?,+,map,comments,inspect,text"),self.$require("opal/nodes/node_with_args"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"DefNode"),$proto=self.$$prototype;return $proto.define_nesting=$proto.define_relative_access=nil,self.$handle("def"),self.$children("mid","inline_args","stmts"),$def(self,"$compile",(function(){var inline_params=nil,scope_name=nil,blockopts=nil;return inline_params=nil,scope_name=nil,$send(this,"in_scope",[],(function $$1(){var stmt_code,self=null==$$1.$$s?this:$$1.$$s,$writer=nil;return null==self.sexp&&(self.sexp=nil),null==self.define_self&&(self.define_self=nil),$writer=[self.$mid()],$send(self.$scope(),"mid=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],$eqeq(self.sexp.$type(),"defs")&&($writer=[!0],$send(self.$scope(),"defs=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]),self.$scope()["$identify!"](),scope_name=self.$scope().$identity(),$writer=["$yield"],$send(self.$scope(),"block_name=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],inline_params=self.$process(self.$inline_args()),stmt_code=self.$stmt(self.$compiler().$returns(self.$stmts())),self.$compile_block_arg(),$truthy(self.define_self)&&self.$add_temp("self = this"),self.$compile_arity_check(),self.$unshift("\n"+self.$current_indent(),self.$scope().$to_vars()),self.$line(stmt_code),$truthy(self.$scope().$catch_return())?(self.$unshift("try {\n"),self.$line("} catch ($returner) { if ($returner === Opal.returner) { return $returner.$v }"),self.$push(" throw $returner; }")):nil}),{$$arity:0,$$s:this}),this.$unshift(") {"),this.$unshift(inline_params),this.$unshift("function "+scope_name+"("),$truthy(this.$await_encountered())&&this.$unshift("async "),this.$line("}"),(blockopts=[])["$<<"]("$$arity: "+this.$arity()),$truthy(this.$compiler()["$arity_check?"]())&&blockopts["$<<"]("$$parameters: "+this.$parameters_code()),$truthy(this.$compiler()["$parse_comments?"]())&&blockopts["$<<"]("$$comments: "+this.$comments_code()),$truthy(this.$compiler()["$enable_source_location?"]())&&blockopts["$<<"]("$$source_location: "+this.$source_location()),$eqeq(blockopts.$length(),1)?this.$push(", "+this.$arity()):$truthy($rb_gt(blockopts.$length(),1))&&this.$push(", {",blockopts.$join(", "),"}"),this.$wrap_with_definition(),$truthy(this.define_nesting)&&this.$scope().$nesting(),$truthy(this.define_relative_access)?this.$scope().$relative_access():nil}),0),$def(self,"$wrap_with_definition",(function(){return this.$helper("def"),this.$wrap("$def("+this.$scope().$self()+", '$"+this.$mid()+"', ",")"),$truthy(this["$expr?"]())?nil:this.$unshift("\n"+this.$current_indent())}),0),$def(self,"$comments_code",(function(){return $rb_plus($rb_plus("[",$send(this.$comments(),"map",[],(function(comment){return null==comment&&(comment=nil),comment.$text().$inspect()}),1).$join(", ")),"]")}),0)}($nesting[0],$$("NodeWithArgs"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/defs"]=function(Opal){var self=Opal.top,$nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass,$def=Opal.def;return Opal.add_stubs("require,handle,children,helper,unshift,expr,recvr,mid,push"),self.$require("opal/nodes/def"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"DefsNode");return self.$handle("defs"),self.$children("recvr","mid","inline_args","stmts"),$def(self,"$wrap_with_definition",(function(){return this.$helper("defs"),this.$unshift("$defs(",this.$expr(this.$recvr()),", '$"+this.$mid()+"', "),this.$push(")")}),0)}($nesting[0],$$("DefNode"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/if"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$eqeq=Opal.eqeq,$def=Opal.def,$not=Opal.not,$send=Opal.send,$eqeqeq=Opal.eqeqeq;return Opal.add_stubs("require,handle,children,should_compile_as_simple_expression?,==,true_body,s,compile_with_binary_or,false_body,compile_with_binary_and,compile_with_ternary,compile_with_if,truthy,falsy,!,push,js_truthy,test,indent,line,stmt,type,expects_expression?,await_encountered,scope,wrap,returnify,returns,compiler,expr?,recv?,simple?,expr,[],meta,sexp,===,single_line?,strip_empty_children,all?,helper,new_temp,top_scope,excl,from,to"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super,$parent_nesting){var self=$klass($base,$super,"IfNode"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);self.$handle("if"),self.$children("test","true_body","false_body"),$def(self,"$compile",(function(){return $truthy(this["$should_compile_as_simple_expression?"]())?$eqeq(this.$true_body(),this.$s("true"))?this.$compile_with_binary_or():$eqeq(this.$false_body(),this.$s("false"))?this.$compile_with_binary_and():this.$compile_with_ternary():this.$compile_with_if()}),0),$def(self,"$compile_with_if",(function(){var $a,truthy=nil,falsy=nil;return truthy=this.$truthy(),falsy=this.$falsy(),$truthy(falsy)&&$not(truthy)?(this.$push("if (!",this.$js_truthy(this.$test()),") {"),falsy=($a=[truthy,falsy])[0],truthy=$a[1]):this.$push("if (",this.$js_truthy(this.$test()),") {"),$truthy(truthy)&&$send(this,"indent",[],(function $$1(){var self=null==$$1.$$s?this:$$1.$$s;return self.$line(self.$stmt(truthy))}),{$$arity:0,$$s:this}),$truthy(falsy)?$eqeq(falsy.$type(),"if")?this.$line("} else ",this.$stmt(falsy)):(this.$line("} else {"),$send(this,"indent",[],(function $$2(){var self=null==$$2.$$s?this:$$2.$$s;return self.$line(self.$stmt(falsy))}),{$$arity:0,$$s:this}),this.$line("}")):(this.$line("}"),$truthy(this["$expects_expression?"]())&&this.$line("return nil;")),$truthy(this["$expects_expression?"]())?$truthy(this.$scope().$await_encountered())?this.$wrap("(await (async function() {","})())"):this.$wrap("(function() {","})()"):nil}),0),$def(self,"$truthy",(function(){return this.$returnify(this.$true_body())}),0),$def(self,"$falsy",(function(){return this.$returnify(this.$false_body())}),0),$def(self,"$returnify",(function(body){return $truthy(this["$expects_expression?"]())&&$truthy(body)?this.$compiler().$returns(body):body}),1),$def(self,"$expects_expression?",(function(){var $ret_or_1;return $truthy($ret_or_1=this["$expr?"]())?$ret_or_1:this["$recv?"]()}),0),$def(self,"$should_compile_as_simple_expression?",(function(){var $ret_or_1,$ret_or_2;return $truthy($ret_or_1=$truthy($ret_or_2=this["$expects_expression?"]())?this["$simple?"](this.$true_body()):$ret_or_2)?this["$simple?"](this.$false_body()):$ret_or_1}),0),$def(self,"$compile_with_ternary",(function(){var truthy,falsy=nil,$ret_or_1=nil;return truthy=this.$true_body(),falsy=this.$false_body(),this.$push("("),this.$push(this.$js_truthy(this.$test())," ? "),this.$push("(",this.$expr($truthy($ret_or_1=truthy)?$ret_or_1:this.$s("nil")),") : "),$not(falsy)||$eqeq(falsy.$type(),"if")?this.$push(this.$expr($truthy($ret_or_1=falsy)?$ret_or_1:this.$s("nil"))):this.$push("(",this.$expr($truthy($ret_or_1=falsy)?$ret_or_1:this.$s("nil")),")"),this.$push(")")}),0),$def(self,"$compile_with_binary_and",(function(){var truthy=nil,$ret_or_1=nil;return truthy=$truthy(this.$sexp().$meta()["$[]"]("do_js_truthy_on_true_body"))?this.$js_truthy($truthy($ret_or_1=this.$true_body())?$ret_or_1:this.$s("nil")):this.$expr($truthy($ret_or_1=this.$true_body())?$ret_or_1:this.$s("nil")),this.$push("("),this.$push(this.$js_truthy(this.$test())," && "),this.$push("(",truthy,")"),this.$push(")")}),0),$def(self,"$compile_with_binary_or",(function(){var falsy=nil,$ret_or_1=nil;return falsy=$truthy(this.$sexp().$meta()["$[]"]("do_js_truthy_on_false_body"))?this.$js_truthy($truthy($ret_or_1=this.$false_body())?$ret_or_1:this.$s("nil")):this.$expr($truthy($ret_or_1=this.$false_body())?$ret_or_1:this.$s("nil")),this.$push("("),this.$push(this.$js_truthy(this.$test())," || "),this.$push("(",falsy,")"),this.$push(")")}),0),$def(self,"$simple?",(function(body){var $ret_or_2=nil;return!$eqeqeq($$$($$("AST"),"Node"),body)||!($eqeqeq("return",$ret_or_2=body.$type())||$eqeqeq("js_return",$ret_or_2)||$eqeqeq("break",$ret_or_2)||$eqeqeq("next",$ret_or_2)||$eqeqeq("redo",$ret_or_2)||$eqeqeq("retry",$ret_or_2))&&($eqeqeq("xstr",$ret_or_2)?$$("XStringNode")["$single_line?"]($$("XStringNode").$strip_empty_children(body.$children())):$send(body.$children(),"all?",[],(function $$6(i){return null==i&&(i=nil),(null==$$6.$$s?this:$$6.$$s)["$simple?"](i)}),{$$arity:1,$$s:this}))}),1)}($nesting[0],$$("Base"),$nesting),function($base,$super){var self=$klass($base,$super,"IFlipFlop");self.$handle("iflipflop"),self.$children("from","to"),$def(self,"$excl",(function(){return""}),0),$def(self,"$compile",(function(){var fun_name,ff;return this.$helper("truthy"),ff=(fun_name=this.$top_scope().$new_temp())+".$$ff",this.$push("(typeof "+fun_name+" === 'undefined' ? ("+fun_name+" = function(from, to){"),this.$push("  if (typeof "+ff+" === 'undefined') "+ff+" = false;"),this.$push("  var retval = "+ff+";"),this.$push("  if (!"+ff+") {"),this.$push("    "+ff+" = retval = $truthy(from());"),this.$push("  }"),this.$push("  "+this.$excl()+"if ("+ff+") {"),this.$push("    if ($truthy(to())) "+ff+" = false;"),this.$push("  }"),this.$push("  return retval;"),this.$push("}) : "+fun_name+")("),this.$push("  function() { ",this.$stmt(this.$compiler().$returns(this.$from()))," },"),this.$push("  function() { ",this.$stmt(this.$compiler().$returns(this.$to()))," }"),this.$push(")")}),0)}($nesting[0],$$("Base")),function($base,$super){var self=$klass($base,$super,"EFlipFlop");return self.$handle("eflipflop"),$def(self,"$excl",(function(){return"else "}),0)}($nesting[0],$$("IFlipFlop"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/logic"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$def=Opal.def,$eqeqeq=Opal.eqeqeq,$send=Opal.send,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$rb_gt=Opal.rb_gt,$not=Opal.not;return Opal.add_stubs("require,handle,in_while?,push,iter?,scope,expr_or_nil,value,error,===,size,children,s,first,compile_while,compile_iter,[],while_loop,stmt?,line,break_val,nil?,expr,[]=,-,helper,identity,==,empty_splat?,recv,>,find_parent_def,!,lambda?,def?,expr?,return_in_iter?,return_expr_in_def?,scope_to_catch_return,catch_return=,return_val,to_s"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"NextNode");self.$handle("next"),$def(self,"$compile",(function(){return $truthy(this["$in_while?"]())?this.$push("continue;"):$truthy(this.$scope()["$iter?"]())?this.$push("return ",this.$expr_or_nil(this.$value()),";"):this.$error("Invalid next")}),0),$def(self,"$value",(function(){var $ret_or_1;return $eqeqeq(0,$ret_or_1=this.$children().$size())?this.$s("nil"):$eqeqeq(1,$ret_or_1)?this.$children().$first():$send(this,"s",["array"].concat($to_a(this.$children())))}),0)}($nesting[0],$$("Base")),function($base,$super){var self=$klass($base,$super,"BreakNode");self.$handle("break"),self.$children("value"),$def(self,"$compile",(function(){return $truthy(this["$in_while?"]())?this.$compile_while():$truthy(this.$scope()["$iter?"]())?this.$compile_iter():this.$error("void value expression: cannot use break outside of iter/while")}),0),$def(self,"$compile_while",(function(){return $truthy(this.$while_loop()["$[]"]("closure"))?this.$push("return ",this.$expr_or_nil(this.$value())):this.$push("break;")}),0),$def(self,"$compile_iter",(function(){return $truthy(this["$stmt?"]())||this.$error("break must be used as a statement"),this.$line("Opal.brk(",this.$break_val(),", $brk)")}),0),$def(self,"$break_val",(function(){return $truthy(this.$value()["$nil?"]())?this.$expr(this.$s("nil")):this.$expr(this.$value())}),0)}($nesting[0],$$("Base")),function($base,$super){var self=$klass($base,$super,"RedoNode");self.$handle("redo"),$def(self,"$compile",(function(){return $truthy(this["$in_while?"]())?this.$compile_while():$truthy(this.$scope()["$iter?"]())?this.$compile_iter():this.$push("REDO()")}),0),$def(self,"$compile_while",(function(){var $writer;return $writer=["use_redo",!0],$send(this.$while_loop(),"[]=",$to_a($writer)),$rb_minus($writer.length,1),this.$push(this.$while_loop()["$[]"]("redo_var")+" = true; continue;")}),0),$def(self,"$compile_iter",(function(){return this.$helper("slice"),this.$push("return "+this.$scope().$identity()+".apply(null, $slice.call(arguments))")}),0)}($nesting[0],$$("Base")),function($base,$super){var self=$klass($base,$super,"SplatNode");self.$handle("splat"),self.$children("value"),$def(self,"$empty_splat?",(function(){return this.$value()["$=="](this.$s("array"))}),0),$def(self,"$compile",(function(){return $truthy(this["$empty_splat?"]())?this.$push("[]"):(this.$helper("to_a"),this.$push("$to_a(",this.$recv(this.$value()),")"))}),0)}($nesting[0],$$("Base")),function($base,$super){var self=$klass($base,$super,"ReturnNode");self.$handle("return"),self.$children("value"),$def(self,"$return_val",(function(){return $truthy(this.$value()["$nil?"]())?this.$expr(this.$s("nil")):$truthy($rb_gt(this.$children().$size(),1))?this.$expr($send(this,"s",["array"].concat($to_a(this.$children())))):this.$expr(this.$value())}),0),$def(self,"$return_in_iter?",(function(){var parent_def=nil;return $truthy(this.$scope()["$iter?"]())&&$not(this.$scope()["$lambda?"]())&&$truthy(parent_def=this.$scope().$find_parent_def())?parent_def:nil}),0),$def(self,"$return_expr_in_def?",(function(){return $truthy(this["$expr?"]())&&($truthy(this.$scope()["$def?"]())||$truthy(this.$scope()["$lambda?"]()))?this.$scope():nil}),0),$def(self,"$scope_to_catch_return",(function(){var $ret_or_1;return $truthy($ret_or_1=this["$return_in_iter?"]())?$ret_or_1:this["$return_expr_in_def?"]()}),0),$def(self,"$compile",(function(){var def_scope,$writer=nil;return $truthy(def_scope=this.$scope_to_catch_return())?($send(def_scope,"catch_return=",$to_a($writer=[!0])),$writer[$rb_minus($writer.length,1)],this.$push("Opal.ret(",this.$return_val(),")")):$truthy(this["$stmt?"]())?this.$push("return ",this.$return_val()):this.$error("void value expression: cannot return as an expression")}),0)}($nesting[0],$$("Base")),function($base,$super){var self=$klass($base,$super,"JSReturnNode");self.$handle("js_return"),self.$children("value"),$def(self,"$compile",(function(){return this.$push("return "),this.$push(this.$expr(this.$value()))}),0)}($nesting[0],$$("Base")),function($base,$super){var self=$klass($base,$super,"JSTempNode");self.$handle("js_tmp"),self.$children("value"),$def(self,"$compile",(function(){return this.$push(this.$value().$to_s())}),0)}($nesting[0],$$("Base")),function($base,$super){var self=$klass($base,$super,"BlockPassNode");return self.$handle("block_pass"),self.$children("value"),$def(self,"$compile",(function(){return this.$push(this.$expr(this.$s("send",this.$value(),"to_proc",this.$s("arglist"))))}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/definitions"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$send=Opal.send,$def=Opal.def,$eqeqeq=Opal.eqeqeq,$range=Opal.range,$truthy=Opal.truthy,$rb_gt=Opal.rb_gt,$eqeq=Opal.eqeq,$to_a=Opal.to_a,$slice=Opal.slice,$rb_plus=Opal.rb_plus,$hash2=Opal.hash2,$const_set=Opal.const_set;return Opal.add_stubs("require,handle,children,each,line,self,scope,expr,===,type,new_name,helper,inspect,[],to_s,first,old_name,push,error,empty?,stmt?,compile_children,simple_children?,compile_inline_children,>,size,wrap,==,returned_children,await_encountered,parent,+,returns,compiler,s,process,fragment,freeze,none?,include?,map,each_with_index,reject,to_proc"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"UndefNode");self.$handle("undef"),self.$children("value"),$def(self,"$compile",(function(){return $send(this.$children(),"each",[],(function $$1(child){var self=null==$$1.$$s?this:$$1.$$s;return null==child&&(child=nil),self.$line("Opal.udef("+self.$scope().$self()+", '$' + ",self.$expr(child),");")}),{$$arity:1,$$s:this})}),0)}($nesting[0],$$("Base")),function($base,$super){var self=$klass($base,$super,"AliasNode");self.$handle("alias"),self.$children("new_name","old_name"),$def(self,"$compile",(function(){var $ret_or_1,new_name_str=nil,old_name_str=nil;return $eqeqeq("gvar",$ret_or_1=this.$new_name().$type())?(this.$helper("alias_gvar"),new_name_str=this.$new_name().$children().$first().$to_s()["$[]"]($range(1,-1,!1)).$inspect(),old_name_str=this.$old_name().$children().$first().$to_s()["$[]"]($range(1,-1,!1)).$inspect(),this.$push("$alias_gvar(",new_name_str,", ",old_name_str,")")):$eqeqeq("dsym",$ret_or_1)||$eqeqeq("sym",$ret_or_1)?(this.$helper("alias"),this.$push("$alias("+this.$scope().$self()+", ",this.$expr(this.$new_name()),", ",this.$expr(this.$old_name()),")")):this.$error("Opal doesn't know yet how to alias with "+this.$new_name().$type())}),0)}($nesting[0],$$("Base")),function($base,$super,$parent_nesting){var self=$klass($base,$super,"BeginNode"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;$proto.level=$proto.returned_children=nil,self.$handle("begin"),$def(self,"$compile",(function(){return $truthy(this.$children()["$empty?"]())?this.$push("nil"):$truthy(this["$stmt?"]())?this.$compile_children(this.$children(),this.level):$truthy(this["$simple_children?"]())?(this.$compile_inline_children(this.$children(),this.level),$truthy($rb_gt(this.$children().$size(),1))?this.$wrap("(",")"):nil):$eqeq(this.$children().$size(),1)?this.$compile_inline_children(this.$returned_children(),this.level):(this.$compile_children(this.$returned_children(),this.level),$truthy(this.$scope().$parent().$await_encountered())?this.$wrap("(await (async function() {","})())"):this.$wrap("(function() {","})()"))}),0),$def(self,"$returned_children",(function(){var $a,$b,$ret_or_1,rest=nil,last_child=nil;return this.returned_children=$truthy($ret_or_1=this.returned_children)?$ret_or_1:($b=($b=($a=[].concat($to_a(this.$children()))).length-1)<0?0:$b,rest=$slice.call($a,0,$b),last_child=null==$a[$b]?nil:$a[$b],$truthy(last_child)?$rb_plus(rest,[this.$compiler().$returns(last_child)]):[this.$s("nil")])}),0),$def(self,"$compile_children",(function(children,level){return $send(children,"each",[],(function $$2(child){var self=null==$$2.$$s?this:$$2.$$s;return null==child&&(child=nil),self.$line(self.$process(child,level),self.$fragment(";",$hash2(["loc"],{loc:!1})))}),{$$arity:1,$$s:this})}),2),$const_set($nesting[0],"COMPLEX_CHILDREN",["while","while_post","until","until_post","js_return"].$freeze()),$def(self,"$simple_children?",(function(){return $send(this.$children(),"none?",[],(function(child){return null==child&&(child=nil),$$("COMPLEX_CHILDREN")["$include?"](child.$type())}),1)}),0),$def(self,"$compile_inline_children",(function(children,level){var processed_children;return processed_children=$send(children,"map",[],(function $$5(child){return null==child&&(child=nil),(null==$$5.$$s?this:$$5.$$s).$process(child,level)}),{$$arity:1,$$s:this}),$send($send(processed_children,"reject",[],"empty?".$to_proc()),"each_with_index",[],(function $$6(child,idx){var self=null==$$6.$$s?this:$$6.$$s;return null==child&&(child=nil),null==idx&&(idx=nil),$eqeq(idx,0)||self.$push(self.$fragment(", ",$hash2(["loc"],{loc:!1}))),self.$push(child)}),{$$arity:2,$$s:this})}),2)}($nesting[0],$$("ScopeNode"),$nesting),function($base,$super){return $klass($base,$super,"KwBeginNode").$handle("kwbegin")}($nesting[0],$$("BeginNode"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/yield"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$def=Opal.def;return Opal.add_stubs("require,find_yielding_scope,uses_block!,block_name,block_name=,-,yields_single_arg?,children,push,expr,first,wrap,s,uses_splat?,scope,def?,parent,!,==,size,any?,type,handle,compile_call"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"BaseYieldNode");$def(self,"$compile_call",(function(){var block_name,yielding_scope=nil,$writer=nil;return(yielding_scope=this.$find_yielding_scope())["$uses_block!"](),$truthy(yielding_scope.$block_name())||($send(yielding_scope,"block_name=",$to_a($writer=["$yield"])),$writer[$rb_minus($writer.length,1)]),block_name=yielding_scope.$block_name(),$truthy(this["$yields_single_arg?"](this.$children()))?(this.$push(this.$expr(this.$children().$first())),this.$wrap("Opal.yield1("+block_name+", ",")")):(this.$push(this.$expr($send(this,"s",["arglist"].concat($to_a(this.$children()))))),$truthy(this["$uses_splat?"](this.$children()))?this.$wrap("Opal.yieldX("+block_name+", ",")"):this.$wrap("Opal.yieldX("+block_name+", [","])"))}),0),$def(self,"$find_yielding_scope",(function(){var working=nil;for(working=this.$scope();$truthy(working)&&!$truthy(working.$block_name())&&!$truthy(working["$def?"]());)working=working.$parent();return working}),0),$def(self,"$yields_single_arg?",(function(children){var $ret_or_1;return $truthy($ret_or_1=this["$uses_splat?"](children)["$!"]())?children.$size()["$=="](1):$ret_or_1}),1),$def(self,"$uses_splat?",(function(children){return $send(children,"any?",[],(function(child){return null==child&&(child=nil),child.$type()["$=="]("splat")}),1)}),1)}($nesting[0],$$("Base")),function($base,$super){var self=$klass($base,$super,"YieldNode");self.$handle("yield"),$def(self,"$compile",(function(){return this.$compile_call()}),0)}($nesting[0],$$("BaseYieldNode")),function($base,$super){var self=$klass($base,$super,"ReturnableYieldNode");return self.$handle("returnable_yield"),$def(self,"$compile",(function(){return this.$compile_call(),this.$wrap("return ",";")}),0)}($nesting[0],$$("BaseYieldNode"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/rescue"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$send=Opal.send,$truthy=Opal.truthy,$def=Opal.def,$range=Opal.range,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$eqeq=Opal.eqeq;return Opal.add_stubs("require,handle,children,push,in_ensure,line,stmt,body_sexp,indent,has_rescue_else?,unshift,rescue_else_code,process,compiler,ensr_sexp,wrap_in_closure?,await_encountered,scope,wrap,returns,begn,ensr,s,recv?,expr?,rescue_else_sexp,stmt?,detect,[],!=,type,rescue_else_sexp=,-,handle_rescue_else_manually?,in_rescue,body_code,each_with_index,==,retry_id,body,nil?,!,in_ensure?,gen_retry_id,attr_reader,expr,klasses,lvar,updated,in_resbody,rescue_body,klasses_sexp,in_resbody?,error,current_rescue"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"EnsureNode");self.$handle("ensure"),self.$children("begn","ensr"),$def(self,"$compile",(function(){return this.$push("try {"),$send(this,"in_ensure",[],(function $$1(){var self=null==$$1.$$s?this:$$1.$$s;return self.$line(self.$stmt(self.$body_sexp()))}),{$$arity:0,$$s:this}),this.$line("} finally {"),$send(this,"indent",[],(function $$2(){var self=null==$$2.$$s?this:$$2.$$s;return null==self.level&&(self.level=nil),$truthy(self["$has_rescue_else?"]())?(self.$unshift("var $no_errors = true; "),self.$line("var $rescue_else_result;"),self.$line("if ($no_errors) { "),$send(self,"indent",[],(function $$3(){var self=null==$$3.$$s?this:$$3.$$s;return self.$line("$rescue_else_result = (function() {"),$send(self,"indent",[],(function $$4(){var self=null==$$4.$$s?this:$$4.$$s;return self.$line(self.$stmt(self.$rescue_else_code()))}),{$$arity:0,$$s:self}),self.$line("})();")}),{$$arity:0,$$s:self}),self.$line("}"),self.$line(self.$compiler().$process(self.$ensr_sexp(),self.level)),self.$line("if ($no_errors) { return $rescue_else_result; }")):self.$line(self.$compiler().$process(self.$ensr_sexp(),self.level))}),{$$arity:0,$$s:this}),this.$line("}"),$truthy(this["$wrap_in_closure?"]())?$truthy(this.$scope().$await_encountered())?this.$wrap("(await (async function() { ","; })())"):this.$wrap("(function() { ","; })()"):nil}),0),$def(self,"$body_sexp",(function(){return $truthy(this["$wrap_in_closure?"]())?this.$compiler().$returns(this.$begn()):this.$begn()}),0),$def(self,"$ensr_sexp",(function(){var $ret_or_1;return $truthy($ret_or_1=this.$ensr())?$ret_or_1:this.$s("nil")}),0),$def(self,"$wrap_in_closure?",(function(){var $ret_or_1,$ret_or_2;return $truthy($ret_or_1=$truthy($ret_or_2=this["$recv?"]())?$ret_or_2:this["$expr?"]())?$ret_or_1:this["$has_rescue_else?"]()}),0),$def(self,"$rescue_else_code",(function(){var rescue_else_code=nil;return rescue_else_code=this.$scope().$rescue_else_sexp(),$truthy(this["$stmt?"]())||(rescue_else_code=this.$compiler().$returns(rescue_else_code)),rescue_else_code}),0)}($nesting[0],$$("Base")),function($base,$super){var self=$klass($base,$super,"RescueNode");self.$$prototype.retry_id=nil,self.$handle("rescue"),self.$children("body"),$def(self,"$compile",(function(){var $writer;return $writer=[$send(this.$children()["$[]"]($range(1,-1,!1)),"detect",[],(function(sexp){var $ret_or_1;return null==sexp&&(sexp=nil),$truthy($ret_or_1=sexp)?sexp.$type()["$!="]("resbody"):$ret_or_1}),1)],$send(this.$scope(),"rescue_else_sexp=",$to_a($writer)),$rb_minus($writer.length,1),!1,$truthy(this["$handle_rescue_else_manually?"]())&&this.$line("var $no_errors = true;"),$send(this,"in_rescue",[this],(function $$7(){var self=null==$$7.$$s?this:$$7.$$s;return self.$push("try {"),$send(self,"indent",[],(function $$8(){var self=null==$$8.$$s?this:$$8.$$s;return self.$line(self.$stmt(self.$body_code()))}),{$$arity:0,$$s:self}),self.$line("} catch ($err) {"),$send(self,"indent",[],(function $$9(){var self=null==$$9.$$s?this:$$9.$$s;return $truthy(self["$has_rescue_else?"]())&&self.$line("$no_errors = false;"),$send(self.$children()["$[]"]($range(1,-1,!1)),"each_with_index",[],(function $$10(child,idx){var self=null==$$10.$$s?this:$$10.$$s;return null==self.level&&(self.level=nil),null==child&&(child=nil),null==idx&&(idx=nil),$truthy(child)&&$eqeq(child.$type(),"resbody")?(!0,$eqeq(idx,0)||self.$push(" else "),self.$line(self.$process(child,self.level))):nil}),{$$arity:2,$$s:self}),self.$push(" else { throw $err; }")}),{$$arity:0,$$s:self}),self.$line("}"),$truthy(self["$handle_rescue_else_manually?"]())&&(self.$push("finally {"),$send(self,"indent",[],(function $$11(){var self=null==$$11.$$s?this:$$11.$$s;return self.$line("if ($no_errors) { "),$send(self,"indent",[],(function $$12(){var self=null==$$12.$$s?this:$$12.$$s;return self.$line(self.$stmt(self.$rescue_else_code()))}),{$$arity:0,$$s:self}),self.$line("}")}),{$$arity:0,$$s:self}),self.$push("}")),$truthy(self.$retry_id())?self.$wrap(self.$retry_id()+": do { "," break; } while(1)"):nil}),{$$arity:0,$$s:this}),$truthy(this["$expr?"]())||$truthy(this["$recv?"]())?$truthy(this.$scope().$await_encountered())?this.$wrap("(await (async function() { ","})())"):this.$wrap("(function() { ","})()"):nil}),0),$def(self,"$body_code",(function(){var body_code=nil;return body_code=$truthy(this.$body()["$nil?"]())||$eqeq(this.$body().$type(),"resbody")?this.$s("nil"):this.$body(),$truthy(this["$stmt?"]())||(body_code=this.$compiler().$returns(body_code)),body_code}),0),$def(self,"$rescue_else_code",(function(){var rescue_else_code=nil;return rescue_else_code=this.$scope().$rescue_else_sexp(),$truthy(this["$stmt?"]())||(rescue_else_code=this.$compiler().$returns(rescue_else_code)),rescue_else_code}),0),$def(self,"$handle_rescue_else_manually?",(function(){var $ret_or_1;return $truthy($ret_or_1=this["$in_ensure?"]()["$!"]())?this["$has_rescue_else?"]():$ret_or_1}),0),$def(self,"$gen_retry_id",(function(){var $ret_or_1;return this.retry_id=$truthy($ret_or_1=this.retry_id)?$ret_or_1:this.$scope().$gen_retry_id()}),0),self.$attr_reader("retry_id")}($nesting[0],$$("Base")),function($base,$super){var self=$klass($base,$super,"ResBodyNode");self.$handle("resbody"),self.$children("klasses_sexp","lvar","body"),$def(self,"$compile",(function(){return this.$push("if (Opal.rescue($err, ",this.$expr(this.$klasses()),")) {"),$send(this,"indent",[],(function $$14(){var self=null==$$14.$$s?this:$$14.$$s;return $truthy(self.$lvar())&&self.$push(self.$expr(self.$lvar().$updated(nil,[].concat($to_a(self.$lvar().$children())).concat([self.$s("js_tmp","$err")])))),self.$line("try {"),$send(self,"indent",[],(function $$15(){var self=null==$$15.$$s?this:$$15.$$s;return $send(self,"in_resbody",[],(function $$16(){var self=null==$$16.$$s?this:$$16.$$s;return self.$line(self.$stmt(self.$rescue_body()))}),{$$arity:0,$$s:self})}),{$$arity:0,$$s:self}),self.$line("} finally { Opal.pop_exception(); }")}),{$$arity:0,$$s:this}),this.$line("}")}),0),$def(self,"$klasses",(function(){var $ret_or_1;return $truthy($ret_or_1=this.$klasses_sexp())?$ret_or_1:this.$s("array",this.$s("const",nil,"StandardError"))}),0),$def(self,"$rescue_body",(function(){var $ret_or_1,body_code=nil;return body_code=$truthy($ret_or_1=this.$body())?$ret_or_1:this.$s("nil"),$truthy(this["$stmt?"]())||(body_code=this.$compiler().$returns(body_code)),body_code}),0)}($nesting[0],$$("Base")),function($base,$super){var self=$klass($base,$super,"RetryNode");return self.$handle("retry"),$def(self,"$compile",(function(){return $truthy(this["$in_resbody?"]())||this.$error("Invalid retry"),this.$push("continue "+this.$scope().$current_rescue().$gen_retry_id())}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/super"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$to_a=Opal.to_a,$slice=Opal.slice,$truthy=Opal.truthy,$send=Opal.send,$def=Opal.def,$to_ary=Opal.to_ary,$eqeq=Opal.eqeq,$not=Opal.not,$eqeqeq=Opal.eqeqeq,$rb_plus=Opal.rb_plus,$rb_minus=Opal.rb_minus,$rb_gt=Opal.rb_gt;return Opal.add_stubs("require,include?,type,s,helper,push,compile_receiver,compile_method_body,compile_method_name,compile_arguments,compile_block_pass,private,def?,scope,find_parent_def,to_s,mid,def_scope,identify!,self,method_id,def_scope_identity,defined_check_param,allow_stubs,super_chain,join,map,implicit_arguments_param,super_method_invocation,iter?,super_block_invocation,raise,handle,wrap,uses_block!,compile_using_send,==,iter,block_name,implicit_arglist,!,<<,new,each,children,original_args,[],===,+,[]=,-,>,meta,empty?"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"BaseSuperNode"),$proto=self.$$prototype;$proto.sexp=$proto.def_scope=nil,$def(self,"$initialize",(function $$initialize($a){var 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this.def_scope=$truthy($ret_or_1=this.def_scope)?$ret_or_1:$truthy(this.$scope()["$def?"]())?this.$scope():this.$scope().$find_parent_def()}),0),$def(self,"$defined_check_param",(function(){return"false"}),0),$def(self,"$implicit_arguments_param",(function(){return"false"}),0),$def(self,"$method_id",(function(){return this.$def_scope().$mid().$to_s()}),0),$def(self,"$def_scope_identity",(function(){return this.$def_scope()["$identify!"](this.$def_scope().$mid())}),0),$def(self,"$allow_stubs",(function(){return"true"}),0),$def(self,"$super_method_invocation",(function(){return this.$helper("find_super"),"$find_super("+this.$scope().$self()+", '"+this.$method_id()+"', "+this.$def_scope_identity()+", "+this.$defined_check_param()+", "+this.$allow_stubs()+")"}),0),$def(self,"$super_block_invocation",(function(){var $a,$b,chain,cur_defn,mid,trys;return this.$helper("find_block_super"),$b=this.$scope().$super_chain(),chain=null==($a=$to_ary($b))[0]?nil:$a[0],cur_defn=null==$a[1]?nil:$a[1],mid=null==$a[2]?nil:$a[2],trys=$send(chain,"map",[],(function(c){return null==c&&(c=nil),c+".$$def"}),1).$join(" || "),"$find_block_super("+this.$scope().$self()+", "+mid+", ("+trys+" || "+cur_defn+"), "+this.$defined_check_param()+", "+this.$implicit_arguments_param()+")"}),0),$def(self,"$compile_method_body",(function(){return this.$push(", "),$truthy(this.$scope()["$def?"]())?this.$push(this.$super_method_invocation()):$truthy(this.$scope()["$iter?"]())?this.$push(this.$super_block_invocation()):this.$raise("super must be called from method body or block")}),0),$def(self,"$compile_method_name",(function(){var $a,$b,mid=nil;return $truthy(this.$scope()["$def?"]())?this.$push(", '"+this.$method_id()+"'"):$truthy(this.$scope()["$iter?"]())?($b=this.$scope().$super_chain(),null==($a=$to_ary($b))[0]?nil:$a[0],null==$a[1]?nil:$a[1],mid=null==$a[2]?nil:$a[2],this.$push(", "+mid)):nil}),0)}($nesting[0],$$("CallNode")),function($base,$super){var self=$klass($base,$super,"DefinedSuperNode");self.$handle("defined_super"),$def(self,"$allow_stubs",(function(){return"false"}),0),$def(self,"$defined_check_param",(function(){return"true"}),0),$def(self,"$compile",(function(){return this.$compile_receiver(),this.$compile_method_body(),this.$wrap("((",') != null ? 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$ret_or_1,self=null==$$2.$$s?this:$$2.$$s,lvar_name=nil,arg_node=nil,$writer=nil,key_name=nil;return null==sexp&&(sexp=nil),lvar_name=sexp.$children()["$[]"](0),$eqeqeq("arg",$ret_or_1=sexp.$type())||$eqeqeq("optarg",$ret_or_1)?(arg_node=self.$s("lvar",lvar_name),$eqeq(lvar_name["$[]"](0),"_")&&($writer=[lvar_name,$rb_plus(same_arg_counter["$[]"](lvar_name),1)],$send(same_arg_counter,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],$truthy($rb_gt(same_arg_counter["$[]"](lvar_name),1))&&(arg_node=self.$s("js_tmp",lvar_name+"_$"+same_arg_counter["$[]"](lvar_name)))),args["$<<"](arg_node)):$eqeqeq("restarg",$ret_or_1)?(arg_node=$truthy(lvar_name)?self.$s("lvar",lvar_name):self.$s("js_tmp","$rest_arg"),args["$<<"](self.$s("splat",arg_node))):$eqeqeq("kwarg",$ret_or_1)||$eqeqeq("kwoptarg",$ret_or_1)?(key_name=sexp.$meta()["$[]"]("arg_name"),kwargs["$<<"](self.$s("pair",self.$s("sym",key_name),self.$s("lvar",lvar_name)))):$eqeqeq("kwrestarg",$ret_or_1)?(arg_node=$truthy(lvar_name)?self.$s("lvar",lvar_name):self.$s("js_tmp","$kw_rest_arg"),kwargs["$<<"](self.$s("kwsplat",arg_node))):nil}),{$$arity:1,$$s:this}),$truthy(kwargs["$empty?"]())||args["$<<"]($send(this,"s",["hash"].concat($to_a(kwargs)))),args}),0),$def(self,"$block_name",(function(){var $ret_or_1;return $eqeqeq($$$($$$($$("Opal"),"Nodes"),"IterNode"),$ret_or_1=this.$def_scope())||$eqeqeq($$$($$$($$("Opal"),"Nodes"),"DefNode"),$ret_or_1)?this.$def_scope().$block_name():this.$raise("Don't know what to do with super in the scope "+this.$def_scope())}),0)}($nesting[0],$$("SuperNode"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/version"]=function(Opal){var $nesting=[],$module=(Opal.nil,Opal.module),$const_set=Opal.const_set;return function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return $const_set($nesting[0],"VERSION","1.5.0.dev")}($nesting[0],$nesting)},Opal.modules["opal/nodes/top"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$module=Opal.module,$klass=Opal.klass,$send=Opal.send,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$truthy=Opal.truthy,$eqeq=Opal.eqeq,$def=Opal.def;return Opal.add_stubs("require,handle,children,top_scope=,compiler,-,[],meta,sexp,dynamic_cache_result=,push,version_comment,in_scope,==,body,s,line,use_strict?,stmt,stmts,is_a?,eval?,add_temp,add_used_helpers,to_vars,scope,compile_method_stubs,compile_irb_vars,compile_end_construct,opening,closing,await_encountered,requirable?,unshift,inspect,module_name,file,esm?,returns,irb?,each,to_a,helpers,method_missing?,method_calls,join,map,to_proc,empty?,eof_content"),self.$require("pathname"),self.$require("opal/version"),self.$require("opal/nodes/scope"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super,$parent_nesting){var self=$klass($base,$super,"TopNode"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return self.$handle("top"),self.$children("body"),$def(self,"$compile",(function(){var $writer=nil;return $writer=[this],$send(this.$compiler(),"top_scope=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],$truthy(this.$sexp().$meta()["$[]"]("dynamic_cache_result"))&&($writer=[!0],$send(this.$compiler(),"dynamic_cache_result=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]),this.$push(this.$version_comment()),$send(this,"in_scope",[],(function $$1(){var self=null==$$1.$$s?this:$$1.$$s,body_code=nil;return null==self.define_nesting&&(self.define_nesting=nil),null==self.define_self&&(self.define_self=nil),null==self.define_relative_access&&(self.define_relative_access=nil),null==self.define_absolute_const&&(self.define_absolute_const=nil),$eqeq(self.$body(),self.$s("nil"))?self.$line("return Opal.nil;"):($truthy(self.$compiler()["$use_strict?"]())&&self.$line('"use 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[self] : [self.$$class]"):($truthy(self.define_self)&&self.$add_temp("self = Opal.top"),$truthy(self.define_nesting)&&self.$add_temp("$nesting = []")),$truthy(self.define_relative_access)&&self.$add_temp("$$ = Opal.$r($nesting)"),self.$add_temp("nil = Opal.nil"),$truthy(self.define_absolute_const)&&self.$add_temp("$$$ = Opal.$$$"),self.$add_used_helpers(),self.$line(self.$scope().$to_vars()),self.$compile_method_stubs(),self.$compile_irb_vars(),self.$compile_end_construct(),self.$line(body_code))}),{$$arity:0,$$s:this}),this.$opening(),this.$closing()}),0),$def(self,"$opening",(function(){var async_prefix=nil;return $truthy(this.$await_encountered())&&(async_prefix="async "),$truthy(this.$compiler()["$requirable?"]())?this.$unshift("Opal.modules["+$$$($$("Opal"),"Compiler").$module_name(this.$compiler().$file()).$inspect()+"] = "+async_prefix+"function(Opal) {"):$truthy(this.$compiler()["$eval?"]())?this.$unshift("("+async_prefix+"function(Opal, self) {"):$truthy(this.$compiler()["$esm?"]())?this.$unshift("export default Opal.queue("+async_prefix+"function(Opal) {"):this.$unshift("Opal.queue("+async_prefix+"function(Opal) {")}),0),$def(self,"$closing",(function(){return $truthy(this.$compiler()["$requirable?"]())?this.$line("};\n"):$truthy(this.$compiler()["$eval?"]())?this.$line("})(Opal, self);"):this.$line("});\n")}),0),$def(self,"$stmts",(function(){return this.$compiler().$returns(this.$body())}),0),$def(self,"$absolute_const",(function(){return this.define_absolute_const=!0,"$$$"}),0),$def(self,"$compile_irb_vars",(function(){return $truthy(this.$compiler()["$irb?"]())?this.$line("if (!Opal.irb_vars) { Opal.irb_vars = {}; }"):nil}),0),$def(self,"$add_used_helpers",(function(){return $send(this.$compiler().$helpers().$to_a(),"each",[],(function $$2(h){return null==h&&(h=nil),(null==$$2.$$s?this:$$2.$$s).$add_temp("$"+h+" = Opal."+h)}),{$$arity:1,$$s:this})}),0),$def(self,"$compile_method_stubs",(function(){var calls=nil,stubs=nil;return $truthy(this.$compiler()["$method_missing?"]())?(calls=this.$compiler().$method_calls(),stubs=$send(calls.$to_a(),"map",[],"to_s".$to_proc()).$join(","),$truthy(stubs["$empty?"]())?nil:this.$line("Opal.add_stubs('"+stubs+"');")):nil}),0),$def(self,"$compile_end_construct",(function(){var content=nil;return $truthy(content=this.$compiler().$eof_content())?(this.$line("var $__END__ = Opal.Object.$new();"),this.$line("$__END__.$read = function() { return "+content.$inspect()+"; };")):nil}),0),$def(self,"$version_comment",(function(){return"/* Generated by Opal "+$$$($$("Opal"),"VERSION")+" */"}),0)}($nesting[0],$$("ScopeNode"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/while"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$send=Opal.send,$truthy=Opal.truthy,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$def=Opal.def;return Opal.add_stubs("require,handle,children,js_truthy,test,with_temp,in_while,compiler,wrap_in_closure?,[]=,while_loop,-,indent,stmt,body,uses_redo?,compile_with_redo,compile_without_redo,await_encountered,scope,wrap,private,push,compile_while,while_open,while_close,line,[],expr?,recv?"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"WhileNode");self.$handle("while"),self.$children("test","body"),$def(self,"$compile",(function(){var test_code;return test_code=this.$js_truthy(this.$test()),$send(this,"with_temp",[],(function $$1(redo_var){var self=null==$$1.$$s?this:$$1.$$s;return null==redo_var&&(redo_var=nil),$send(self.$compiler(),"in_while",[],(function $$2(){var body_code,self=null==$$2.$$s?this:$$2.$$s,$writer=nil;return $truthy(self["$wrap_in_closure?"]())&&($writer=["closure",!0],$send(self.$while_loop(),"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]),$writer=["redo_var",redo_var],$send(self.$while_loop(),"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],body_code=$send(self,"indent",[],(function $$3(){var self=null==$$3.$$s?this:$$3.$$s;return self.$stmt(self.$body())}),{$$arity:0,$$s:self}),$truthy(self["$uses_redo?"]())?self.$compile_with_redo(test_code,body_code,redo_var):self.$compile_without_redo(test_code,body_code)}),{$$arity:0,$$s:self})}),{$$arity:1,$$s:this}),$truthy(this["$wrap_in_closure?"]())?$truthy(this.$scope().$await_encountered())?this.$wrap("(await (async function() {","; return nil; })())"):this.$wrap("(function() {","; return nil; })()"):nil}),0),self.$private(),$def(self,"$compile_with_redo",(function(test_code,body_code,redo_var){return this.$push(redo_var+" = false; "),this.$compile_while([redo_var," || ",test_code],[redo_var+" = false;",body_code])}),3),$def(self,"$compile_without_redo",(function(test_code,body_code){return this.$compile_while([test_code],[body_code])}),2),$def(self,"$compile_while",(function(test_code,body_code){return $send(this,"push",[this.$while_open()].concat($to_a(test_code)).concat([this.$while_close()])),$send(this,"indent",[],(function $$4(){return $send(null==$$4.$$s?this:$$4.$$s,"line",$to_a(body_code))}),{$$arity:0,$$s:this}),this.$line("}")}),2),$def(self,"$while_open",(function(){return"while ("}),0),$def(self,"$while_close",(function(){return") {"}),0),$def(self,"$uses_redo?",(function(){return this.$while_loop()["$[]"]("use_redo")}),0),$def(self,"$wrap_in_closure?",(function(){var $ret_or_1;return $truthy($ret_or_1=this["$expr?"]())?$ret_or_1:this["$recv?"]()}),0)}($nesting[0],$$("Base")),function($base,$super){var self=$klass($base,$super,"UntilNode");self.$handle("until"),self.$private(),$def(self,"$while_open",(function(){return"while (!("}),0),$def(self,"$while_close",(function(){return")) {"}),0)}($nesting[0],$$("WhileNode")),function($base,$super){var self=$klass($base,$super,"WhilePostNode");self.$handle("while_post"),self.$private(),$def(self,"$compile_while",(function(test_code,body_code){return this.$push("do {"),$send(this,"indent",[],(function $$7(){return $send(null==$$7.$$s?this:$$7.$$s,"line",$to_a(body_code))}),{$$arity:0,$$s:this}),$send(this,"line",["} ",this.$while_open()].concat($to_a(test_code)).concat([this.$while_close()]))}),2),$def(self,"$while_close",(function(){return");"}),0)}($nesting[0],$$("WhileNode")),function($base,$super){var self=$klass($base,$super,"UntilPostNode");return self.$handle("until_post"),self.$private(),$def(self,"$while_open",(function(){return"while(!("}),0),$def(self,"$while_close",(function(){return"));"}),0)}($nesting[0],$$("WhilePostNode"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/hash"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$to_a=Opal.to_a,$send=Opal.send,$eqeqeq=Opal.eqeqeq,$def=Opal.def,$truthy=Opal.truthy,$eqeq=Opal.eqeq,$to_ary=Opal.to_ary,$hash2=Opal.hash2,$rb_minus=Opal.rb_minus;return Opal.add_stubs("require,handle,attr_accessor,each,children,===,type,<<,[],all?,keys,include?,has_kwsplat,compile_merge,simple_keys?,compile_hash2,compile_hash,helper,==,empty?,expr,s,each_with_index,push,wrap,times,size,inspect,to_s,values,[]=,-,join,value"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"HashNode");self.$handle("hash"),self.$attr_accessor("has_kwsplat","keys","values"),$def(self,"$initialize",(function $$initialize($a){var $rest_arg,$yield=$$initialize.$$p||nil,self=this;return delete $$initialize.$$p,$rest_arg=Opal.slice.call(arguments),$send2(self,$find_super(self,"initialize",$$initialize,!1,!0),"initialize",$to_a($rest_arg),$yield),self.has_kwsplat=!1,self.keys=[],self.values=[],$send(self.$children(),"each",[],(function $$1(child){var $ret_or_1,self=null==$$1.$$s?this:$$1.$$s;return null==self.keys&&(self.keys=nil),null==self.values&&(self.values=nil),null==child&&(child=nil),$eqeqeq("kwsplat",$ret_or_1=child.$type())?self.has_kwsplat=!0:$eqeqeq("pair",$ret_or_1)?(self.keys["$<<"](child.$children()["$[]"](0)),self.values["$<<"](child.$children()["$[]"](1))):nil}),{$$arity:1,$$s:self})}),-1),$def(self,"$simple_keys?",(function(){return $send(this.$keys(),"all?",[],(function(key){return null==key&&(key=nil),["sym","str"]["$include?"](key.$type())}),1)}),0),$def(self,"$compile",(function(){return $truthy(this.$has_kwsplat())?this.$compile_merge():$truthy(this["$simple_keys?"]())?this.$compile_hash2():this.$compile_hash()}),0),$def(self,"$compile_merge",(function(){var $a,result=nil,seq=nil;return this.$helper("hash"),result=($a=[[],[]])[0],seq=$a[1],$send(this.$children(),"each",[],(function $$4(child){var self=null==$$4.$$s?this:$$4.$$s;return null==child&&(child=nil),$eqeq(child.$type(),"kwsplat")?($truthy(seq["$empty?"]())||result["$<<"](self.$expr($send(self,"s",["hash"].concat($to_a(seq))))),result["$<<"](self.$expr(child)),seq=[]):seq["$<<"](child)}),{$$arity:1,$$s:this}),$truthy(seq["$empty?"]())||result["$<<"](this.$expr($send(this,"s",["hash"].concat($to_a(seq))))),$send(result,"each_with_index",[],(function $$5(fragment,idx){var self=null==$$5.$$s?this:$$5.$$s;return null==fragment&&(fragment=nil),null==idx&&(idx=nil),$eqeq(idx,0)?self.$push(fragment):self.$push(".$merge(",fragment,")")}),{$$arity:2,$$s:this})}),0),$def(self,"$compile_hash",(function(){return this.$helper("hash"),$send(this.$children(),"each_with_index",[],(function $$6(pair,idx){var $a,$b,key,value,self=null==$$6.$$s?this:$$6.$$s;return null==pair&&(pair=nil),null==idx&&(idx=nil),$b=pair.$children(),key=null==($a=$to_ary($b))[0]?nil:$a[0],value=null==$a[1]?nil:$a[1],$eqeq(idx,0)||self.$push(", "),self.$push(self.$expr(key),", ",self.$expr(value))}),{$$arity:2,$$s:this}),this.$wrap("$hash(",")")}),0),$def(self,"$compile_hash2",(function(){var $a,hash_obj=nil,hash_keys=nil;return $a=[$hash2([],{}),[]],hash_obj=$a[0],hash_keys=$a[1],this.$helper("hash2"),$send(this.$keys().$size(),"times",[],(function $$7(idx){var key,$writer,self=null==$$7.$$s?this:$$7.$$s;return null==idx&&(idx=nil),key=self.$keys()["$[]"](idx).$children()["$[]"](0).$to_s().$inspect(),$truthy(hash_obj["$include?"](key))||hash_keys["$<<"](key),$writer=[key,self.$expr(self.$values()["$[]"](idx))],$send(hash_obj,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]}),{$$arity:1,$$s:this}),$send(hash_keys,"each_with_index",[],(function $$8(key,idx){var self=null==$$8.$$s?this:$$8.$$s;return null==key&&(key=nil),null==idx&&(idx=nil),$eqeq(idx,0)||self.$push(", "),self.$push(key+": "),self.$push(hash_obj["$[]"](key))}),{$$arity:2,$$s:this}),this.$wrap("$hash2(["+hash_keys.$join(", ")+"], {","})")}),0)}($nesting[0],$$("Base")),function($base,$super){var self=$klass($base,$super,"KwSplatNode");return self.$handle("kwsplat"),self.$children("value"),$def(self,"$compile",(function(){return this.$push("Opal.to_hash(",this.$expr(this.$value()),")")}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/array"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send,$def=Opal.def;return Opal.add_stubs("require,handle,empty?,children,push,each,==,type,expr,<<,fragment"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"ArrayNode");return self.$handle("array"),$def(self,"$compile",(function(){var $a,code=nil,work=nil,join=nil;return $truthy(this.$children()["$empty?"]())?this.$push("[]"):(code=($a=[[],[]])[0],work=$a[1],$send(this.$children(),"each",[],(function $$1(child){var splat,part,self=null==$$1.$$s?this:$$1.$$s;return null==child&&(child=nil),splat=child.$type()["$=="]("splat"),part=self.$expr(child),$truthy(splat)?($truthy(work["$empty?"]())?$truthy(code["$empty?"]())?code["$<<"](self.$fragment("[].concat("))["$<<"](part)["$<<"](self.$fragment(")")):code["$<<"](self.$fragment(".concat("))["$<<"](part)["$<<"](self.$fragment(")")):($truthy(code["$empty?"]())?code["$<<"](self.$fragment("["))["$<<"](work)["$<<"](self.$fragment("]")):code["$<<"](self.$fragment(".concat(["))["$<<"](work)["$<<"](self.$fragment("])")),code["$<<"](self.$fragment(".concat("))["$<<"](part)["$<<"](self.$fragment(")"))),work=[]):($truthy(work["$empty?"]())||work["$<<"](self.$fragment(", ")),work["$<<"](part))}),{$$arity:1,$$s:this}),$truthy(work["$empty?"]())||(join=[this.$fragment("["),work,this.$fragment("]")],$truthy(code["$empty?"]())?code=join:code.$push([this.$fragment(".concat("),join,this.$fragment(")")])),this.$push(code))}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/defined"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$eqeqeq=Opal.eqeqeq,$eqeq=Opal.eqeq,$def=Opal.def,$truthy=Opal.truthy,$to_a=Opal.to_a,$slice=Opal.slice,$send=Opal.send,$range=Opal.range;return Opal.add_stubs("require,handle,children,===,type,value,push,inspect,to_s,==,[],size,compile_defined_send,wrap,compile_defined_ivar,compile_defined_super,compile_defined_yield,compile_defined_xstr,compile_defined_const,compile_defined_cvar,compile_defined_gvar,compile_defined_back_ref,compile_defined_nth_ref,compile_defined_array,respond_to?,__send__,new_temp,scope,expr,wrap_with_try_catch,mid_to_jsid,compile_defined,compile_send_recv_doesnt_raise,self,each,s,uses_block!,block_name,find_parent_def,nil?,relative_access,absolute_const,top_scope,class_variable_owner,helper,include?,each_with_index"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"DefinedNode");return self.$handle("defined?"),self.$children("value"),$def(self,"$compile",(function(){var $ret_or_1;return $eqeqeq("self",$ret_or_1=this.$value().$type())||$eqeqeq("nil",$ret_or_1)||$eqeqeq("false",$ret_or_1)||$eqeqeq("true",$ret_or_1)?this.$push(this.$value().$type().$to_s().$inspect()):$eqeqeq("lvasgn",$ret_or_1)||$eqeqeq("ivasgn",$ret_or_1)||$eqeqeq("gvasgn",$ret_or_1)||$eqeqeq("cvasgn",$ret_or_1)||$eqeqeq("casgn",$ret_or_1)||$eqeqeq("op_asgn",$ret_or_1)||$eqeqeq("or_asgn",$ret_or_1)||$eqeqeq("and_asgn",$ret_or_1)?this.$push("'assignment'"):$eqeqeq("lvar",$ret_or_1)?this.$push("'local-variable'"):$eqeqeq("begin",$ret_or_1)?$eqeq(this.$value().$children().$size(),1)&&$eqeq(this.$value().$children()["$[]"](0).$type(),"masgn")?this.$push("'assignment'"):this.$push("'expression'"):$eqeqeq("send",$ret_or_1)?(this.$compile_defined_send(this.$value()),this.$wrap("("," ? 'method' : nil)")):$eqeqeq("ivar",$ret_or_1)?(this.$compile_defined_ivar(this.$value()),this.$wrap("("," ? 'instance-variable' : nil)")):$eqeqeq("zsuper",$ret_or_1)||$eqeqeq("super",$ret_or_1)?this.$compile_defined_super():$eqeqeq("yield",$ret_or_1)?(this.$compile_defined_yield(),this.$wrap("("," ? 'yield' : nil)")):$eqeqeq("xstr",$ret_or_1)?this.$compile_defined_xstr(this.$value()):$eqeqeq("const",$ret_or_1)?(this.$compile_defined_const(this.$value()),this.$wrap("("," ? 'constant' : nil)")):$eqeqeq("cvar",$ret_or_1)?(this.$compile_defined_cvar(this.$value()),this.$wrap("("," ? 'class variable' : nil)")):$eqeqeq("gvar",$ret_or_1)?(this.$compile_defined_gvar(this.$value()),this.$wrap("("," ? 'global-variable' : nil)")):$eqeqeq("back_ref",$ret_or_1)?(this.$compile_defined_back_ref(),this.$wrap("("," ? 'global-variable' : nil)")):$eqeqeq("nth_ref",$ret_or_1)?(this.$compile_defined_nth_ref(),this.$wrap("("," ? 'global-variable' : nil)")):$eqeqeq("array",$ret_or_1)?(this.$compile_defined_array(this.$value()),this.$wrap("("," ? 'expression' : nil)")):this.$push("'expression'")}),0),$def(self,"$compile_defined",(function(node){var type,node_tmp=nil;return type=node.$type(),$truthy(this["$respond_to?"]("compile_defined_"+type))?this.$__send__("compile_defined_"+type,node):(node_tmp=this.$scope().$new_temp(),this.$push("("+node_tmp+" = ",this.$expr(node),")"),node_tmp)}),1),$def(self,"$wrap_with_try_catch",(function(code){var returning_tmp;return returning_tmp=this.$scope().$new_temp(),this.$push("("+returning_tmp+" = (function() { try {"),this.$push("  return "+code+";"),this.$push("} catch ($err) {"),this.$push("  if (Opal.rescue($err, [Opal.Exception])) {"),this.$push("    try {"),this.$push("      return false;"),this.$push("    } finally { Opal.pop_exception() }"),this.$push("  } else { throw $err; }"),this.$push("}})())"),returning_tmp}),1),$def(self,"$compile_send_recv_doesnt_raise",(function(recv_code){return this.$wrap_with_try_catch(recv_code)}),1),$def(self,"$compile_defined_send",(function(node){var $a,args,mid,recv_value_tmp,meth_tmp,recv=nil,method_name=nil,recv_code=nil,recv_tmp=nil;return recv=null==($a=[].concat($to_a(node)))[0]?nil:$a[0],method_name=null==$a[1]?nil:$a[1],args=$slice.call($a,2),mid=this.$mid_to_jsid(method_name.$to_s()),$truthy(recv)?(recv_code=this.$compile_defined(recv),this.$push(" && "),$eqeq(recv.$type(),"send")&&(recv_code=this.$compile_send_recv_doesnt_raise(recv_code),this.$push(" && ")),recv_tmp=this.$scope().$new_temp(),this.$push("("+recv_tmp+" = ",recv_code,", "+recv_tmp+") && ")):recv_tmp=this.$scope().$self(),recv_value_tmp=this.$scope().$new_temp(),this.$push("("+recv_value_tmp+" = "+recv_tmp+") && "),meth_tmp=this.$scope().$new_temp(),this.$push("((("+meth_tmp+" = "+recv_value_tmp+mid+") && !"+meth_tmp+".$$stub)"),this.$push(" || "+recv_value_tmp+"['$respond_to_missing?']('"+method_name+"'))"),$send(args,"each",[],(function $$1(arg){var self=null==$$1.$$s?this:$$1.$$s;return null==arg&&(arg=nil),$eqeqeq("block_pass",arg.$type())?nil:(self.$push(" && "),self.$compile_defined(arg))}),{$$arity:1,$$s:this}),this.$wrap("(",")"),meth_tmp+"()"}),1),$def(self,"$compile_defined_ivar",(function(node){var name,tmp;return name=node.$children()["$[]"](0).$to_s()["$[]"]($range(1,-1,!1)),tmp=this.$scope().$new_temp(),this.$push("("+tmp+" = "+this.$scope().$self()+"['"+name+"'], "+tmp+" != null && "+tmp+" !== nil)"),tmp}),1),$def(self,"$compile_defined_super",(function(){return this.$push(this.$expr(this.$s("defined_super")))}),0),$def(self,"$compile_defined_yield",(function(){var block_name,$ret_or_1;return this.$scope()["$uses_block!"](),block_name=$truthy($ret_or_1=this.$scope().$block_name())?$ret_or_1:this.$scope().$find_parent_def().$block_name(),this.$push("("+block_name+" != null && "+block_name+" !== nil)"),block_name}),0),$def(self,"$compile_defined_xstr",(function(node){return this.$push("(typeof(",this.$expr(node),') !== "undefined")')}),1),$def(self,"$compile_defined_const",(function(node){var $a,const_name,const_tmp,const_scope=nil,const_scope_tmp=nil;return const_scope=null==($a=[].concat($to_a(node)))[0]?nil:$a[0],const_name=null==$a[1]?nil:$a[1],const_tmp=this.$scope().$new_temp(),$truthy(const_scope["$nil?"]())?this.$push("("+const_tmp+" = "+this.$scope().$relative_access()+"('"+const_name+"', 'skip_raise'))"):$eqeq(const_scope,this.$s("cbase"))?this.$push("("+const_tmp+" = "+this.$top_scope().$absolute_const()+"('::', '"+const_name+"', 'skip_raise'))"):(const_scope_tmp=this.$compile_defined(const_scope),this.$push(" && ("+const_tmp+" = "+this.$top_scope().$absolute_const()+"("+const_scope_tmp+", '"+const_name+"', 'skip_raise'))")),const_tmp}),1),$def(self,"$compile_defined_cvar",(function(node){var $a,cvar_name,cvar_tmp;return cvar_name=null==($a=[].concat($to_a(node)))[0]?nil:$a[0],null==$a[1]?nil:$a[1],cvar_tmp=this.$scope().$new_temp(),this.$push("("+cvar_tmp+" = "+this.$class_variable_owner()+".$$cvars['"+cvar_name+"'], "+cvar_tmp+" != null)"),cvar_tmp}),1),$def(self,"$compile_defined_gvar",(function(node){var gvar_temp,name=nil;return this.$helper("gvars"),name=node.$children()["$[]"](0).$to_s()["$[]"]($range(1,-1,!1)),gvar_temp=this.$scope().$new_temp(),$truthy(["~","!"]["$include?"](name))?this.$push("("+gvar_temp+" = ",this.$expr(node)," || true)"):this.$push("("+gvar_temp+" = $gvars["+name.$inspect()+"], "+gvar_temp+" != null)"),gvar_temp}),1),$def(self,"$compile_defined_back_ref",(function(){var back_ref_temp;return this.$helper("gvars"),back_ref_temp=this.$scope().$new_temp(),this.$push("("+back_ref_temp+" = $gvars['~'], "+back_ref_temp+" != null && "+back_ref_temp+" !== nil)"),back_ref_temp}),0),$def(self,"$compile_defined_nth_ref",(function(){var nth_ref_tmp;return this.$helper("gvars"),nth_ref_tmp=this.$scope().$new_temp(),this.$push("("+nth_ref_tmp+" = $gvars['~'], "+nth_ref_tmp+" != null && "+nth_ref_tmp+" != nil)"),nth_ref_tmp}),0),$def(self,"$compile_defined_array",(function(node){return $send(node.$children(),"each_with_index",[],(function $$2(child,idx){var self=null==$$2.$$s?this:$$2.$$s;return null==child&&(child=nil),null==idx&&(idx=nil),$eqeq(idx,0)||self.$push(" && "),self.$compile_defined(child)}),{$$arity:2,$$s:this})}),1)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/masgn"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$const_set=Opal.const_set,$eqeq=Opal.eqeq,$truthy=Opal.truthy,$send=Opal.send,$def=Opal.def,$rb_ge=Opal.rb_ge,$not=Opal.not,$rb_plus=Opal.rb_plus;return Opal.add_stubs("require,freeze,handle,children,new_temp,scope,==,type,rhs,push,expr,any?,size,compile_masgn,lhs,helper,queue_temp,take_while,!=,drop,each_with_index,compile_assignment,empty?,shift,[],<<,dup,s,>=,!,updated,include?,+,last,raise"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super,$parent_nesting){var self=$klass($base,$super,"MassAssignNode"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return $const_set($nesting[0],"SIMPLE_ASSIGNMENT",["lvasgn","ivasgn","lvar","gvasgn","cdecl","casgn"].$freeze()),self.$handle("masgn"),self.$children("lhs","rhs"),$def(self,"$compile",(function(){var array,rhs_len=nil,retval=nil;return array=this.$scope().$new_temp(),$eqeq(this.$rhs().$type(),"array")?(this.$push(array+" = ",this.$expr(this.$rhs())),rhs_len=$truthy($send(this.$rhs().$children(),"any?",[],(function(c){return null==c&&(c=nil),c.$type()["$=="]("splat")}),1))?nil:this.$rhs().$children().$size(),this.$compile_masgn(this.$lhs().$children(),array,rhs_len),this.$push(", "+array)):(this.$helper("to_ary"),retval=this.$scope().$new_temp(),this.$push(retval+" = ",this.$expr(this.$rhs())),this.$push(", "+array+" = $to_ary("+retval+")"),this.$compile_masgn(this.$lhs().$children(),array),this.$push(", "+retval),this.$scope().$queue_temp(retval)),this.$scope().$queue_temp(array)}),0),$def(self,"$compile_masgn",(function(lhs_items,array,len){var pre_splat=nil,post_splat=nil,splat=nil,part=nil,tmp=nil;return null==len&&(len=nil),pre_splat=$send(lhs_items,"take_while",[],(function(child){return null==child&&(child=nil),child.$type()["$!="]("splat")}),1),post_splat=lhs_items.$drop(pre_splat.$size()),$send(pre_splat,"each_with_index",[],(function $$3(child,idx){return null==child&&(child=nil),null==idx&&(idx=nil),(null==$$3.$$s?this:$$3.$$s).$compile_assignment(child,array,idx,len)}),{$$arity:2,$$s:this}),$truthy(post_splat["$empty?"]())?nil:(splat=post_splat.$shift(),$truthy(post_splat["$empty?"]())?$truthy(part=splat.$children()["$[]"](0))?(this.$helper("slice"),part=part.$dup()["$<<"](this.$s("js_tmp","$slice.call("+array+", "+pre_splat.$size()+")")),this.$push(", "),this.$push(this.$expr(part))):nil:(tmp=this.$scope().$new_temp(),this.$push(", "+tmp+" = "+array+".length - "+post_splat.$size()),this.$push(", "+tmp+" = ("+tmp+" < "+pre_splat.$size()+") ? "+pre_splat.$size()+" : "+tmp),$truthy(part=splat.$children()["$[]"](0))&&(this.$helper("slice"),part=part.$dup()["$<<"](this.$s("js_tmp","$slice.call("+array+", "+pre_splat.$size()+", "+tmp+")")),this.$push(", "),this.$push(this.$expr(part))),$send(post_splat,"each_with_index",[],(function $$4(child,idx){var self=null==$$4.$$s?this:$$4.$$s;return null==child&&(child=nil),null==idx&&(idx=nil),$eqeq(idx,0)?self.$compile_assignment(child,array,tmp):self.$compile_assignment(child,array,tmp+" + "+idx)}),{$$arity:2,$$s:this}),this.$scope().$queue_temp(tmp)))}),-3),$def(self,"$compile_assignment",(function(child,array,idx,len){var assign=nil,part=nil,tmp=nil;if(null==len&&(len=nil),assign=$not(len)||$truthy($rb_ge(idx,len))?this.$s("js_tmp","("+array+"["+idx+"] == null ? nil : "+array+"["+idx+"])"):this.$s("js_tmp",array+"["+idx+"]"),part=child.$updated(),$truthy($$("SIMPLE_ASSIGNMENT")["$include?"](child.$type())))part=part.$updated(nil,$rb_plus(part.$children(),[assign]));else if($eqeq(child.$type(),"send"))part=part.$updated(nil,$rb_plus(part.$children(),[assign]));else if($eqeq(child.$type(),"attrasgn"))part.$last()["$<<"](assign);else{if($eqeq(child.$type(),"mlhs"))return this.$helper("to_ary"),tmp=this.$scope().$new_temp(),this.$push(", ("+tmp+" = $to_ary("+assign.$children()["$[]"](0)+")"),this.$compile_masgn(child.$children(),tmp),this.$push(")"),this.$scope().$queue_temp(tmp),nil;this.$raise("Bad child node in masgn LHS: "+child+". LHS: "+this.$lhs())}return this.$push(", "),this.$push(this.$expr(part))}),-4)}($nesting[0],$$("Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/arglist"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$send=Opal.send,$truthy=Opal.truthy,$to_a=Opal.to_a,$def=Opal.def;return Opal.add_stubs("require,handle,each,children,==,type,expr,empty?,<<,fragment,push"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"ArglistNode");return self.$handle("arglist"),$def(self,"$compile",(function(){var $a,code=nil,work=nil,join=nil;return code=($a=[[],[]])[0],work=$a[1],$send(this.$children(),"each",[],(function $$1(current){var splat,arg,self=null==$$1.$$s?this:$$1.$$s;return null==current&&(current=nil),splat=current.$type()["$=="]("splat"),arg=self.$expr(current),$truthy(splat)?($truthy(work["$empty?"]())?$truthy(code["$empty?"]())?code["$<<"](arg):code["$<<"](self.$fragment(".concat("))["$<<"](arg)["$<<"](self.$fragment(")")):($truthy(code["$empty?"]())?code["$<<"](self.$fragment("["))["$<<"](work)["$<<"](self.$fragment("]")):code["$<<"](self.$fragment(".concat(["))["$<<"](work)["$<<"](self.$fragment("])")),code["$<<"](self.$fragment(".concat("))["$<<"](arg)["$<<"](self.$fragment(")"))),work=[]):($truthy(work["$empty?"]())||work["$<<"](self.$fragment(", ")),work["$<<"](arg))}),{$$arity:1,$$s:this}),$truthy(work["$empty?"]())||(join=work,$truthy(code["$empty?"]())?code=join:code["$<<"](this.$fragment(".concat(["))["$<<"](join)["$<<"](this.$fragment("])"))),$send(this,"push",$to_a(code))}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/x_string"]=function(Opal){var $nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send,$def=Opal.def,$defs=Opal.defs,$lambda=Opal.lambda,$eqeqeq=Opal.eqeqeq,$eqeq=Opal.eqeq,$not=Opal.not,$range=Opal.range;return Opal.add_stubs("handle,unpack_return,children,strip_empty_children,single_line?,compile_single_line,each,compile_child,recv?,wrap,push,==,size,none?,type,end_with?,source,expression,loc,dup,nil?,empty?,rstrip,any?,[],first,shift,last,pop,private,===,include?,self,scope,new,expr,raise,s,strip,=~,!,extract_last_value,expr?,warning,compiler,line"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super,$parent_nesting){var self=$klass($base,$super,"XStringNode"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;return $proto.should_add_semicolon=$proto.returning=nil,self.$handle("xstr"),$def(self,"$compile",(function(){var unpacked_children,stripped_children;return this.should_add_semicolon=!1,unpacked_children=this.$unpack_return(this.$children()),stripped_children=$$("XStringNode").$strip_empty_children(unpacked_children),$truthy($$("XStringNode")["$single_line?"](stripped_children))?this.$compile_single_line(stripped_children):$send(unpacked_children,"each",[],(function $$1(c){return null==c&&(c=nil),(null==$$1.$$s?this:$$1.$$s).$compile_child(c)}),{$$arity:1,$$s:this}),$truthy(this["$recv?"]())&&this.$wrap("(",")"),$truthy(this.should_add_semicolon)?this.$push(";"):nil}),0),$defs(self,"$single_line?",(function(children){var $ret_or_1;return $truthy($ret_or_1=children.$size()["$=="](1))?$ret_or_1:$send(children,"none?",[],(function(c){var $ret_or_2;return null==c&&(c=nil),$truthy($ret_or_2=c.$type()["$=="]("str"))?c.$loc().$expression().$source()["$end_with?"]("\n"):$ret_or_2}),1)}),1),$defs(self,"$strip_empty_children",(function(children){var empty_line=nil,$ret_or_1=nil;for(children=children.$dup(),empty_line=$lambda((function(child){var $ret_or_1,$ret_or_2=nil;return null==child&&(child=nil),$truthy($ret_or_1=child["$nil?"]())?$ret_or_1:$truthy($ret_or_2=child.$type()["$=="]("str"))?child.$loc().$expression().$source().$rstrip()["$empty?"]():$ret_or_2}),1);$truthy($truthy($ret_or_1=children["$any?"]())?empty_line["$[]"](children.$first()):$ret_or_1);)children.$shift();for(;$truthy($truthy($ret_or_1=children["$any?"]())?empty_line["$[]"](children.$last()):$ret_or_1);)children.$pop();return children}),1),self.$private(),$def(self,"$compile_child",(function(child){var $ret_or_1,value=nil;return $eqeqeq("str",$ret_or_1=child.$type())?(value=child.$loc().$expression().$source(),$truthy(value["$include?"]("self"))&&this.$scope().$self(),this.$push($$("Fragment").$new(value,this.$scope(),child))):$eqeqeq("begin",$ret_or_1)||$eqeqeq("gvar",$ret_or_1)||$eqeqeq("ivar",$ret_or_1)||$eqeqeq("nil",$ret_or_1)?this.$push(this.$expr(child)):this.$raise("Unsupported xstr part: "+child.$type())}),1),$def(self,"$compile_single_line",(function(children){var single_child,has_embeded_return=nil,first_child=nil,$ret_or_1=nil,last_child=nil,last_value=nil;return has_embeded_return=!1,first_child=children.$shift(),single_child=children["$empty?"](),first_child=$truthy($ret_or_1=first_child)?$ret_or_1:this.$s("nil"),$eqeq(first_child.$type(),"str")&&(has_embeded_return=first_child.$loc().$expression().$source().$strip()["$=~"](/^return\b/)),$truthy(this.returning)&&$not(has_embeded_return)&&this.$push("return "),last_child=$truthy($ret_or_1=children.$pop())?$ret_or_1:first_child,$eqeq(last_child.$type(),"str")&&(last_value=this.$extract_last_value(last_child)),$truthy(single_child)||(this.should_add_semicolon=!1,this.$compile_child(first_child),$send(children,"each",[],(function $$5(c){return null==c&&(c=nil),(null==$$5.$$s?this:$$5.$$s).$compile_child(c)}),{$$arity:1,$$s:this})),$eqeq(last_child.$type(),"str")?this.$push($$("Fragment").$new(last_value,this.$scope(),last_child)):this.$compile_child(last_child)}),1),$def(self,"$extract_last_value",(function(last_child){var last_value=nil;return last_value=last_child.$loc().$expression().$source().$rstrip(),$truthy(last_value["$include?"]("self"))&&this.$scope().$self(),($truthy(this.returning)||$truthy(this["$expr?"]()))&&$truthy(last_value["$end_with?"](";"))&&(this.$compiler().$warning("Removed semicolon ending x-string expression, interpreted as unintentional",last_child.$line()),last_value=last_value["$[]"]($range(0,-2,!1))),$truthy(this.returning)&&(this.should_add_semicolon=!0),last_value}),1),$def(self,"$unpack_return",(function(children){var first_child=nil;return first_child=children.$first(),this.returning=!1,$eqeq(first_child.$type(),"js_return")&&(this.returning=!0,children=first_child.$children()),children}),1)}($nesting[0],$$("Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/lambda"]=function(Opal){var self=Opal.top,$nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass,$send=Opal.send,$def=Opal.def;return Opal.add_stubs("require,handle,children,helper,defines_lambda,scope,push,expr,iter"),self.$require("opal/nodes/call"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"LambdaNode");return self.$handle("lambda"),self.$children("iter"),$def(self,"$compile",(function(){return this.$helper("lambda"),$send(this.$scope(),"defines_lambda",[],(function $$1(){var self=null==$$1.$$s?this:$$1.$$s;return self.$push("$lambda(",self.$expr(self.$iter()),")")}),{$$arity:0,$$s:this})}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes"]=function(Opal){var self=Opal.top;Opal.nil;return Opal.add_stubs("require"),self.$require("opal/nodes/base"),self.$require("opal/nodes/literal"),self.$require("opal/nodes/variables"),self.$require("opal/nodes/constants"),self.$require("opal/nodes/call"),self.$require("opal/nodes/csend"),self.$require("opal/nodes/call_special"),self.$require("opal/nodes/module"),self.$require("opal/nodes/class"),self.$require("opal/nodes/singleton_class"),self.$require("opal/nodes/args"),self.$require("opal/nodes/args/arity_check"),self.$require("opal/nodes/iter"),self.$require("opal/nodes/def"),self.$require("opal/nodes/defs"),self.$require("opal/nodes/if"),self.$require("opal/nodes/logic"),self.$require("opal/nodes/definitions"),self.$require("opal/nodes/yield"),self.$require("opal/nodes/rescue"),self.$require("opal/nodes/super"),self.$require("opal/nodes/top"),self.$require("opal/nodes/while"),self.$require("opal/nodes/hash"),self.$require("opal/nodes/array"),self.$require("opal/nodes/defined"),self.$require("opal/nodes/masgn"),self.$require("opal/nodes/arglist"),self.$require("opal/nodes/x_string"),self.$require("opal/nodes/lambda")},Opal.modules["opal/eof_content"]=function(Opal){var $nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$const_set=Opal.const_set,$def=Opal.def,$truthy=Opal.truthy,$send=Opal.send,$eqeq=Opal.eqeq,$range=Opal.range,$to_ary=Opal.to_ary;return Opal.add_stubs("empty?,[],last_token_position,drop_while,lines,==,join,private,last,end_pos"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$super,$parent_nesting){var self=$klass($base,null,"EofContent"),$nesting=[self].concat($parent_nesting),$proto=self.$$prototype;return $proto.tokens=$proto.source=nil,$const_set($nesting[0],"DATA_SEPARATOR","__END__\n"),$def(self,"$initialize",(function(tokens,source){return this.tokens=tokens,this.source=source}),2),$def(self,"$eof",(function(){var eof_content=nil,$ret_or_1=nil;return $truthy(this.tokens["$empty?"]())?nil:(eof_content=this.source["$[]"](Opal.Range.$new(this.$last_token_position(),-1,!1)),$truthy(eof_content)?(eof_content=$send(eof_content.$lines(),"drop_while",[],(function(line){return null==line&&(line=nil),line["$=="]("\n")}),1),$eqeq(eof_content["$[]"](0),"__END__\n")?(eof_content=$truthy($ret_or_1=eof_content["$[]"]($range(1,-1,!1)))?$ret_or_1:[]).$join():$eqeq(eof_content,["__END__"])?"":nil):nil)}),0),self.$private(),$def(self,"$last_token_position",(function(){var $a,$b,last_token_info;return $b=this.tokens.$last(),null==($a=$to_ary($b))[0]?nil:$a[0],last_token_info=null==$a[1]?nil:$a[1],null==($a=$to_ary($b=last_token_info))[0]?nil:$a[0],(null==$a[1]?nil:$a[1]).$end_pos()}),0)}($nesting[0],0,$nesting)}($nesting[0],$nesting)},Opal.modules["opal/errors"]=function(Opal){var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$def=Opal.def,$truthy=Opal.truthy,$send=Opal.send,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$defs=Opal.defs,$rb_plus=Opal.rb_plus,$alias=Opal.alias;return Opal.add_stubs("attr_reader,attr_accessor,new,respond_to?,location,location=,-,diagnostic,diagnostic=,to_a,backtrace,unshift,to_s,set_backtrace,path,lineno,+,label,line,lineno=,source_line,label=,expression"),function($base,$parent_nesting){var self=$module($base,"Opal"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return $klass($nesting[0],$$("StandardError"),"Error"),function($base,$super){var self=$klass($base,$super,"GemNotFound");self.$attr_reader("gem_name"),$def(self,"$initialize",(function $$initialize(gem_name){return delete $$initialize.$$p,this.gem_name=gem_name,$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",["can't find gem "+gem_name],null)}),1)}($nesting[0],$$("Error")),function($base,$super){$klass($base,$super,"CompilationError").$attr_accessor("location")}($nesting[0],$$("Error")),$klass($nesting[0],$$("CompilationError"),"ParsingError"),$klass($nesting[0],$$("ParsingError"),"RewritingError"),function($base,$super){$klass($base,$super,"SyntaxError").$attr_accessor("location")}($nesting[0],$$$("SyntaxError")),$defs(self,"$opal_location_from_error",(function(error){var opal_location,$writer=nil;return opal_location=$$("OpalBacktraceLocation").$new(),$truthy(error["$respond_to?"]("location"))&&($writer=[error.$location()],$send(opal_location,"location=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]),$truthy(error["$respond_to?"]("diagnostic"))&&($writer=[error.$diagnostic()],$send(opal_location,"diagnostic=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]),opal_location}),1),$defs(self,"$add_opal_location_to_error",(function(opal_location,error){var backtrace=nil;return(backtrace=error.$backtrace().$to_a()).$unshift(opal_location.$to_s()),error.$set_backtrace(backtrace),error}),2),function($base,$super){var self=$klass($base,null,"OpalBacktraceLocation");return self.$attr_accessor("path","lineno","label"),$def(self,"$initialize",(function(path,lineno,label){var $a;return null==path&&(path=nil),null==lineno&&(lineno=nil),null==label&&(label=nil),$a=[path,lineno,label],this.path=$a[0],this.lineno=$a[1],this.label=$a[2],$a}),-1),$def(self,"$to_s",(function(){var string=nil;return string=this.$path(),$truthy(this.$lineno())&&(string=$rb_plus(string,":"+this.$lineno())),string=$rb_plus(string,":in "),string=$truthy(this.$label())?$rb_plus(string,"`"+this.$label()+"'"):$rb_plus(string,"unknown")}),0),$alias(self,"line","lineno"),$def(self,"$diagnostic=",(function(diagnostic){var $writer;return $truthy(diagnostic)?($writer=[diagnostic.$location()],$send(this,"location=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]):nil}),1),$def(self,"$location=",(function(location){var $writer=nil;return $truthy(location)?($writer=[location.$line()],$send(this,"lineno=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],$truthy(location["$respond_to?"]("source_line"))?($writer=[location.$source_line()],$send(this,"label=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]):$truthy(location["$respond_to?"]("expression"))?($writer=[location.$expression().$source_line()],$send(this,"label=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]):nil):nil}),1)}($nesting[0])}($nesting[0],$nesting)},Opal.modules["opal/magic_comments"]=function(Opal){var $nesting=[],$$=Opal.$r($nesting),nil=Opal.nil,$module=Opal.module,$const_set=Opal.const_set,$hash2=Opal.hash2,$truthy=Opal.truthy,$send=Opal.send,$rb_ge=Opal.rb_ge,$eqeqeq=Opal.eqeqeq,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$defs=Opal.defs;return Opal.add_stubs("freeze,line,loc,take,each,>=,any?,scan,text,to_sym,===,[]=,-"),function($base,$parent_nesting){var self=$module($base,"MagicComments"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return $const_set($nesting[0],"MAGIC_COMMENT_RE",/^# *(\w+) *: *(\S+.*?) *$/.$freeze()),$const_set($nesting[0],"EMACS_MAGIC_COMMENT_RE",/^# *-\*- *(\w+) *: *(\S+.*?) *-\*- *$/.$freeze()),$defs(self,"$parse",(function(sexp,comments){var flags,first_line=nil;return flags=$hash2([],{}),$truthy(sexp)&&(first_line=sexp.$loc().$line(),comments=comments.$take(first_line)),$send(comments,"each",[],(function(comment){var parts=nil;return null==comment&&(comment=nil),$truthy(first_line)&&$truthy($rb_ge(comment.$loc().$line(),first_line))?nil:$truthy((parts=comment.$text().$scan($$("MAGIC_COMMENT_RE")))["$any?"]())||$truthy((parts=comment.$text().$scan($$("EMACS_MAGIC_COMMENT_RE")))["$any?"]())?$send(parts,"each",[],(function(key,value){var $writer,$ret_or_1;return null==key&&(key=nil),null==value&&(value=nil),$writer=[key.$to_sym(),$eqeqeq("true",$ret_or_1=value)||!$eqeqeq("false",$ret_or_1)&&value],$send(flags,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]}),2):nil}),1),flags}),2)}($$("Opal"),$nesting)},Opal.modules["opal/compiler"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$module=Opal.module,$hash2=Opal.hash2,$defs=Opal.defs,$klass=Opal.klass,$const_set=Opal.const_set,$send=Opal.send,$truthy=Opal.truthy,$not=Opal.not,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$def=Opal.def,$Opal=Opal.Opal,$to_ary=Opal.to_ary,$alias=Opal.alias,$eqeqeq=Opal.eqeqeq,$regexp=Opal.regexp,$rb_plus=Opal.rb_plus,$slice=Opal.slice,$eqeq=Opal.eqeq;return Opal.add_stubs("require,compile,new,freeze,join,dirname,first,split,basename,to_s,cleanpath,Pathname,fetch,define_method,option_value,key?,[],!,include?,raise,inspect,[]=,-,compiler_option,attr_reader,attr_accessor,parse,re_raise_with_location,flatten,process,end_with?,code,last,<<,fragment,s,map,to_proc,file,source=,default_parser,tokenize,requirable?,eval?,tap,meta,location,children,associate_locations,eof,magic_comments,to_sym,strip,async_await_before_typecasting,===,async_await_set_to_regexp,to_a,gsub,escape,location=,opal_location_from_error,path=,label,lines,to_i,line,label=,message,set_backtrace,backtrace,add_opal_location_to_error,warn,empty?,+,start_with?,helpers,new_temp,queue_temp,push_while,pop_while,in_while?,nil?,scope,handlers,type,compile_to_fragments,error,returns,updated,==,uses_block!,block_name,find_parent_def,cache,source_map"),self.$require("set"),self.$require("opal/parser"),self.$require("opal/fragment"),self.$require("opal/nodes"),self.$require("opal/eof_content"),self.$require("opal/errors"),self.$require("opal/magic_comments"),function($base,$parent_nesting){var self=$module($base,"Opal"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return $defs(self,"$compile",(function(source,options){return null==options&&(options=$hash2([],{})),$$("Compiler").$new(source,options).$compile()}),-2),function($base,$super,$parent_nesting){var self=$klass($base,null,"Compiler"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;return $proto.option_values=$proto.options=$proto.magic_comments=$proto.fragments=$proto.source=$proto.buffer=$proto.source_map=$proto.result=$proto.helpers=$proto.method_calls=$proto.async_await=$proto.indent=$proto.unique=$proto.scope=$proto.case_stmt=$proto.handlers=$proto.requires=$proto.required_trees=$proto.autoloads=nil,$const_set($nesting[0],"INDENT","  "),$const_set($nesting[0],"COMPARE",["<",">","<=",">="].$freeze()),$defs(self,"$module_name",(function(path){return 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diff --git a/opal/master/opal-builder.min.js.gz b/opal/master/opal-builder.min.js.gz
index 4aa84a8d..c235b16e 100644
Binary files a/opal/master/opal-builder.min.js.gz and b/opal/master/opal-builder.min.js.gz differ
diff --git a/opal/master/opal-parser.js b/opal/master/opal-parser.js
index 42967508..346582e9 100644
--- a/opal/master/opal-parser.js
+++ b/opal/master/opal-parser.js
@@ -1,12 +1,11 @@
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+Opal.modules["base64"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $defs = Opal.defs, $hash2 = Opal.hash2, $truthy = Opal.truthy;
 
-  Opal.add_stubs(['$raise', '$delete']);
+  Opal.add_stubs('raise,delete');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Base64');
 
-    var $nesting = [self].concat($parent_nesting), $Base64_decode64$1, $Base64_encode64$2, $Base64_strict_decode64$3, $Base64_strict_encode64$4, $Base64_urlsafe_decode64$5, $Base64_urlsafe_encode64$6;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
     
@@ -30,7 +29,7 @@ Opal.modules["base64"] = function(Opal) {
       ) {
         charCode = str.charCodeAt(idx += 3/4);
         if (charCode > 0xFF) {
-          self.$raise($$($nesting, 'ArgumentError'), "invalid character (failed: The string to be encoded contains characters outside of the Latin1 range.)");
+          self.$raise($$('ArgumentError'), "invalid character (failed: The string to be encoded contains characters outside of the Latin1 range.)");
         }
         block = block << 8 | charCode;
       }
@@ -43,7 +42,7 @@ Opal.modules["base64"] = function(Opal) {
     decode = function (input) {
       var str = String(input).replace(/=+$/, '');
       if (str.length % 4 == 1) {
-        self.$raise($$($nesting, 'ArgumentError'), "invalid base64 (failed: The string to be decoded is not correctly encoded.)");
+        self.$raise($$('ArgumentError'), "invalid base64 (failed: The string to be decoded is not correctly encoded.)");
       }
       /* eslint-disable */
       for (
@@ -64,33 +63,28 @@ Opal.modules["base64"] = function(Opal) {
       /* eslint-enable */
     };
   ;
-    Opal.defs(self, '$decode64', $Base64_decode64$1 = function $$decode64(string) {
-      var self = this;
-
+    $defs(self, '$decode64', function $$decode64(string) {
+      
       return decode(string.replace(/\r?\n/g, ''));
-    }, $Base64_decode64$1.$$arity = 1);
-    Opal.defs(self, '$encode64', $Base64_encode64$2 = function $$encode64(string) {
-      var self = this;
-
+    }, 1);
+    $defs(self, '$encode64', function $$encode64(string) {
+      
       return encode(string).replace(/(.{60})/g, "$1\n").replace(/([^\n])$/g, "$1\n");
-    }, $Base64_encode64$2.$$arity = 1);
-    Opal.defs(self, '$strict_decode64', $Base64_strict_decode64$3 = function $$strict_decode64(string) {
-      var self = this;
-
+    }, 1);
+    $defs(self, '$strict_decode64', function $$strict_decode64(string) {
+      
       return decode(string);
-    }, $Base64_strict_decode64$3.$$arity = 1);
-    Opal.defs(self, '$strict_encode64', $Base64_strict_encode64$4 = function $$strict_encode64(string) {
-      var self = this;
-
+    }, 1);
+    $defs(self, '$strict_encode64', function $$strict_encode64(string) {
+      
       return encode(string);
-    }, $Base64_strict_encode64$4.$$arity = 1);
-    Opal.defs(self, '$urlsafe_decode64', $Base64_urlsafe_decode64$5 = function $$urlsafe_decode64(string) {
-      var self = this;
-
+    }, 1);
+    $defs(self, '$urlsafe_decode64', function $$urlsafe_decode64(string) {
+      
       return decode(string.replace(/\-/g, '+').replace(/_/g, '/'));
-    }, $Base64_urlsafe_decode64$5.$$arity = 1);
-    return (Opal.defs(self, '$urlsafe_encode64', $Base64_urlsafe_encode64$6 = function $$urlsafe_encode64(string, $kwargs) {
-      var padding, self = this, str = nil;
+    }, 1);
+    return $defs(self, '$urlsafe_encode64', function $$urlsafe_encode64(string, $kwargs) {
+      var padding, str = nil;
 
       
       
@@ -101,29 +95,24 @@ Opal.modules["base64"] = function(Opal) {
       };
       
       padding = $kwargs.$$smap["padding"];
-      if (padding == null) {
-        padding = true
-      };
+      if (padding == null) padding = true;
       str = encode(string).replace(/\+/g, '-').replace(/\//g, '_');
-      if ($truthy(padding)) {
-      } else {
+      if (!$truthy(padding)) {
         str = str.$delete("=")
       };
       return str;
-    }, $Base64_urlsafe_encode64$6.$$arity = -2), nil) && 'urlsafe_encode64';
+    }, -2);
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/pack_unpack/format_string_parser"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module;
+Opal.modules["corelib/pack_unpack/format_string_parser"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $Kernel = Opal.Kernel;
 
-  Opal.add_stubs(['$raise']);
-  return (function($base, $parent_nesting) {
+  Opal.add_stubs('raise');
+  return (function($base) {
     var self = $module($base, 'PackUnpack');
 
-    var $nesting = [self].concat($parent_nesting);
-
+    
     
     var directives = [
       // Integer
@@ -209,11 +198,11 @@ Opal.modules["corelib/pack_unpack/format_string_parser"] = function(Opal) {
         var directiveSupportsModifiers = /[sSiIlLqQjJ]/.test(currentDirective);
 
         if (!directiveSupportsModifiers && currentModifiers.length > 0) {
-          self.$raise($$($nesting, 'ArgumentError'), "" + "'" + (currentModifiers[0]) + "' allowed only after types sSiIlLqQjJ")
+          $Kernel.$raise($$$('ArgumentError'), "'" + (currentModifiers[0]) + "' allowed only after types sSiIlLqQjJ")
         }
 
         if (currentModifiers.indexOf('<') !== -1 && currentModifiers.indexOf('>') !== -1) {
-          self.$raise($$($nesting, 'RangeError'), "Can't use both '<' and '>'")
+          $Kernel.$raise($$$('RangeError'), "Can't use both '<' and '>'")
         }
 
         if (!countSpecified) {
@@ -257,21 +246,20 @@ Opal.modules["corelib/pack_unpack/format_string_parser"] = function(Opal) {
       yieldAndReset();
     }
   
-  })($nesting[0], $nesting)
+  })('::')
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/string/unpack"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass;
+Opal.modules["corelib/string/unpack"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $Kernel = Opal.Kernel, $hash2 = Opal.hash2, $truthy = Opal.truthy, $rb_lt = Opal.rb_lt, $Opal = Opal.Opal, $rb_gt = Opal.rb_gt, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$flatten', '$decode64', '$raise', '$delete', '$gsub', '$coerce_to!', '$inspect', '$[]', '$unpack']);
+  Opal.add_stubs('require,flatten,decode64,raise,<,delete,gsub,coerce_to!,>,length,inspect,[],unpack');
   
   self.$require("base64");
   self.$require("corelib/pack_unpack/format_string_parser");
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'String');
 
-    var $nesting = [self].concat($parent_nesting), $String_unpack$1, $String_unpack1$2, expected = nil, given = nil;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), expected = nil, given = nil;
 
     
     
@@ -475,7 +463,7 @@ Opal.modules["corelib/string/unpack"] = function(Opal) {
 
     function base64Decode(callback) {
       return function(data) {
-        return $$($nesting, 'Base64').$decode64(callback(data));
+        return $$('Base64').$decode64(callback(data));
       }
     }
 
@@ -577,7 +565,7 @@ Opal.modules["corelib/string/unpack"] = function(Opal) {
       }
 
       if (c >> 6 == 0x02) {
-        self.$raise($$($nesting, 'ArgumentError'), "malformed UTF-8 character")
+        $Kernel.$raise($$$('ArgumentError'), "malformed UTF-8 character")
       }
 
       if (c >> 5 == 0x06) {
@@ -596,11 +584,11 @@ Opal.modules["corelib/string/unpack"] = function(Opal) {
         // 1111 110x (six bytes)
         extraLength = 5;
       } else {
-        self.$raise("malformed UTF-8 character")
+        $Kernel.$raise("malformed UTF-8 character")
       }
 
       if (extraLength > bytesLength) {
-        ((expected = extraLength + 1), (given = bytesLength + 1), self.$raise($$($nesting, 'ArgumentError'), "" + "malformed UTF-8 character (expected " + (expected) + " bytes, given " + (given) + " bytes)"))
+        ((expected = extraLength + 1), (given = bytesLength + 1), $Kernel.$raise($$$('ArgumentError'), "malformed UTF-8 character (expected " + (expected) + " bytes, given " + (given) + " bytes)"))
       }
 
       // Remove the UTF-8 prefix from the char
@@ -611,7 +599,7 @@ Opal.modules["corelib/string/unpack"] = function(Opal) {
         c = readByte();
 
         if (c >> 6 != 0x02) {
-          self.$raise("Invalid multibyte sequence")
+          $Kernel.$raise("Invalid multibyte sequence")
         }
 
         result = (result << 6) | (c & 0x3f);
@@ -943,11 +931,23 @@ Opal.modules["corelib/string/unpack"] = function(Opal) {
     alias('L', 'V');
   ;
     
-    Opal.def(self, '$unpack', $String_unpack$1 = function $$unpack(format) {
-      var self = this;
+    $def(self, '$unpack', function $$unpack(format, $kwargs) {
+      var offset, self = this;
 
       
-      format = $$($nesting, 'Opal')['$coerce_to!'](format, $$($nesting, 'String'), "to_str").$gsub(/\s/, "").$delete("\u0000");
+      
+      if ($kwargs == null) {
+        $kwargs = $hash2([], {});
+      } else if (!$kwargs.$$is_hash) {
+        throw Opal.ArgumentError.$new('expected kwargs');
+      };
+      
+      offset = $kwargs.$$smap["offset"];
+      if (offset == null) offset = 0;
+      if ($truthy($rb_lt(offset, 0))) {
+        $Kernel.$raise($$$('ArgumentError'), "offset can't be negative")
+      };
+      format = $Opal['$coerce_to!'](format, $$$('String'), "to_str").$gsub(/\s/, "").$delete("\u0000");
       
       var output = [];
 
@@ -959,7 +959,7 @@ Opal.modules["corelib/string/unpack"] = function(Opal) {
         var cp, j = 0;
 
         output = new Array(self.length);
-        for (var i = 0; i < self.length; i++) {
+        for (var i = offset; i < self.length; i++) {
           cp = output[j++] = self.codePointAt(i);
           if (cp > 0xffff) i++;
         }
@@ -968,6 +968,10 @@ Opal.modules["corelib/string/unpack"] = function(Opal) {
 
       var buffer = self.$bytes();
 
+      ($truthy($rb_gt(offset, (buffer).$length())) ? ($Kernel.$raise($$$('ArgumentError'), "offset outside of string")) : nil)
+
+      buffer = buffer.slice(offset);
+
 
       // optimization
       var optimizedHandler = optimized[format];
@@ -988,7 +992,7 @@ Opal.modules["corelib/string/unpack"] = function(Opal) {
             chunkReader = readChunk[directive];
 
         if (chunkReader == null) {
-          self.$raise("" + "Unsupported unpack directive " + ((directive).$inspect()) + " (no chunk reader defined)")
+          $Kernel.$raise("Unsupported unpack directive " + ((directive).$inspect()) + " (no chunk reader defined)")
         }
 
         var chunkData = chunkReader(buffer, count);
@@ -998,7 +1002,7 @@ Opal.modules["corelib/string/unpack"] = function(Opal) {
         var handler = handlers[directive];
 
         if (handler == null) {
-          self.$raise("" + "Unsupported unpack directive " + ((directive).$inspect()) + " (no handler defined)")
+          $Kernel.$raise("Unsupported unpack directive " + ((directive).$inspect()) + " (no handler defined)")
         }
 
         return handler(chunk);
@@ -1011,7 +1015,7 @@ Opal.modules["corelib/string/unpack"] = function(Opal) {
           var shouldAutocomplete = autocompletion[directive];
 
           if (shouldAutocomplete == null) {
-            self.$raise("" + "Unsupported unpack directive " + ((directive).$inspect()) + " (no autocompletion rule defined)")
+            $Kernel.$raise("Unsupported unpack directive " + ((directive).$inspect()) + " (no autocompletion rule defined)")
           }
 
           if (shouldAutocomplete) {
@@ -1024,216 +1028,186 @@ Opal.modules["corelib/string/unpack"] = function(Opal) {
 
       return output;
     ;
-    }, $String_unpack$1.$$arity = 1);
-    return (Opal.def(self, '$unpack1', $String_unpack1$2 = function $$unpack1(format) {
-      var self = this;
+    }, -2);
+    return $def(self, '$unpack1', function $$unpack1(format, $kwargs) {
+      var offset, self = this;
 
       
-      format = $$($nesting, 'Opal')['$coerce_to!'](format, $$($nesting, 'String'), "to_str").$gsub(/\s/, "").$delete("\u0000");
-      return self.$unpack(format['$[]'](0))['$[]'](0);
-    }, $String_unpack1$2.$$arity = 1), nil) && 'unpack1';
-  })($nesting[0], null, $nesting);
+      
+      if ($kwargs == null) {
+        $kwargs = $hash2([], {});
+      } else if (!$kwargs.$$is_hash) {
+        throw Opal.ArgumentError.$new('expected kwargs');
+      };
+      
+      offset = $kwargs.$$smap["offset"];
+      if (offset == null) offset = 0;
+      format = $Opal['$coerce_to!'](format, $$$('String'), "to_str").$gsub(/\s/, "").$delete("\u0000");
+      return self.$unpack(format['$[]'](0), $hash2(["offset"], {"offset": offset}))['$[]'](0);
+    }, -2);
+  })('::', null, $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["set"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  function $rb_le(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs <= rhs : lhs['$<='](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $hash2 = Opal.hash2, $truthy = Opal.truthy, $send = Opal.send, $alias = Opal.alias, $module = Opal.module;
+Opal.modules["set"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $defs = Opal.defs, $hash2 = Opal.hash2, $truthy = Opal.truthy, $eqeqeq = Opal.eqeqeq, $Kernel = Opal.Kernel, $send = Opal.send, $def = Opal.def, $eqeq = Opal.eqeq, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $rb_lt = Opal.rb_lt, $rb_le = Opal.rb_le, $alias = Opal.alias, $module = Opal.module;
 
-  Opal.add_stubs(['$include', '$new', '$nil?', '$===', '$raise', '$each', '$add', '$merge', '$class', '$respond_to?', '$subtract', '$dup', '$join', '$to_a', '$equal?', '$instance_of?', '$==', '$instance_variable_get', '$is_a?', '$size', '$all?', '$include?', '$[]=', '$-', '$enum_for', '$[]', '$<<', '$replace', '$delete', '$select', '$reject', '$delete_if', '$to_proc', '$keep_if', '$each_key', '$empty?', '$eql?', '$instance_eval', '$clear', '$<', '$<=', '$any?', '$!', '$intersect?', '$keys']);
+  Opal.add_stubs('include,new,nil?,===,raise,each,add,merge,class,respond_to?,subtract,dup,join,to_a,equal?,instance_of?,==,instance_variable_get,size,is_a?,all?,include?,[]=,-,enum_for,[],<<,replace,delete,select,reject,delete_if,to_proc,keep_if,each_key,empty?,eql?,instance_eval,clear,<,<=,any?,!,intersect?,keys');
   
-  (function($base, $super, $parent_nesting) {
+  (function($base, $super) {
     var self = $klass($base, $super, 'Set');
 
-    var $nesting = [self].concat($parent_nesting), $Set_$$$1, $Set_initialize$2, $Set_dup$4, $Set_$minus$5, $Set_inspect$6, $Set_$eq_eq$7, $Set_add$9, $Set_classify$10, $Set_collect$excl$13, $Set_delete$15, $Set_delete$ques$16, $Set_delete_if$17, $Set_keep_if$20, $Set_reject$excl$23, $Set_select$excl$24, $Set_add$ques$25, $Set_each$26, $Set_empty$ques$27, $Set_eql$ques$28, $Set_clear$30, $Set_include$ques$31, $Set_merge$32, $Set_replace$34, $Set_size$35, $Set_subtract$36, $Set_$$38, $Set_superset$ques$39, $Set_proper_superset$ques$41, $Set_subset$ques$43, $Set_proper_subset$ques$45, $Set_intersect$ques$47, $Set_disjoint$ques$50, $Set_to_a$51;
+    var $ret_or_1 = nil, $proto = self.$$prototype;
 
-    self.$$prototype.hash = nil;
+    $proto.hash = nil;
     
-    self.$include($$($nesting, 'Enumerable'));
-    Opal.defs(self, '$[]', $Set_$$$1 = function($a) {
+    self.$include($$$('Enumerable'));
+    $defs(self, '$[]', function $Set_$$$1($a) {
       var $post_args, ary, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       ary = $post_args;;
       return self.$new(ary);
-    }, $Set_$$$1.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$initialize', $Set_initialize$2 = function $$initialize(enum$) {
-      var $iter = $Set_initialize$2.$$p, block = $iter || nil, $$3, self = this;
+    $def(self, '$initialize', function $$initialize(enum$) {
+      var block = $$initialize.$$p || nil, self = this;
 
-      if ($iter) $Set_initialize$2.$$p = null;
+      delete $$initialize.$$p;
       
+      ;
       
-      if ($iter) $Set_initialize$2.$$p = null;;
-      
-      if (enum$ == null) {
-        enum$ = nil;
-      };
+      if (enum$ == null) enum$ = nil;;
       self.hash = $hash2([], {});
       if ($truthy(enum$['$nil?']())) {
-        return nil};
-      if ($truthy($$($nesting, 'Enumerable')['$==='](enum$))) {
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "value must be enumerable")
+        return nil
+      };
+      if (!$eqeqeq($$$('Enumerable'), enum$)) {
+        $Kernel.$raise($$$('ArgumentError'), "value must be enumerable")
       };
       if ($truthy(block)) {
-        return $send(enum$, 'each', [], ($$3 = function(item){var self = $$3.$$s == null ? this : $$3.$$s;
+        return $send(enum$, 'each', [], function $$2(item){var self = $$2.$$s == null ? this : $$2.$$s;
 
           
           
-          if (item == null) {
-            item = nil;
-          };
-          return self.$add(Opal.yield1(block, item));}, $$3.$$s = self, $$3.$$arity = 1, $$3))
+          if (item == null) item = nil;;
+          return self.$add(Opal.yield1(block, item));}, {$$arity: 1, $$s: self})
       } else {
         return self.$merge(enum$)
       };
-    }, $Set_initialize$2.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$dup', $Set_dup$4 = function $$dup() {
+    $def(self, '$dup', function $$dup() {
       var self = this, result = nil;
 
       
       result = self.$class().$new();
       return result.$merge(self);
-    }, $Set_dup$4.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$-', $Set_$minus$5 = function(enum$) {
+    $def(self, '$-', function $Set_$minus$3(enum$) {
       var self = this;
 
       
-      if ($truthy(enum$['$respond_to?']("each"))) {
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "value must be enumerable")
+      if (!$truthy(enum$['$respond_to?']("each"))) {
+        $Kernel.$raise($$$('ArgumentError'), "value must be enumerable")
       };
       return self.$dup().$subtract(enum$);
-    }, $Set_$minus$5.$$arity = 1);
-    $alias(self, "difference", "-");
+    }, 1);
     
-    Opal.def(self, '$inspect', $Set_inspect$6 = function $$inspect() {
+    $def(self, '$inspect', function $$inspect() {
       var self = this;
 
-      return "" + "#<Set: {" + (self.$to_a().$join(",")) + "}>"
-    }, $Set_inspect$6.$$arity = 0);
+      return "#<Set: {" + (self.$to_a().$join(",")) + "}>"
+    }, 0);
     
-    Opal.def(self, '$==', $Set_$eq_eq$7 = function(other) {
-      var $$8, self = this, $ret_or_1 = nil;
+    $def(self, '$==', function $Set_$eq_eq$4(other) {
+      var self = this;
 
       if ($truthy(self['$equal?'](other))) {
         return true
       } else if ($truthy(other['$instance_of?'](self.$class()))) {
         return self.hash['$=='](other.$instance_variable_get("@hash"))
-      } else if ($truthy((function() {if ($truthy(($ret_or_1 = other['$is_a?']($$($nesting, 'Set'))))) {
-        return self.$size()['$=='](other.$size())
-      } else {
-        return $ret_or_1
-      }; return nil; })())) {
-        return $send(other, 'all?', [], ($$8 = function(o){var self = $$8.$$s == null ? this : $$8.$$s;
+      } else if (($truthy(other['$is_a?']($$$('Set'))) && ($eqeq(self.$size(), other.$size())))) {
+        return $send(other, 'all?', [], function $$5(o){var self = $$5.$$s == null ? this : $$5.$$s;
           if (self.hash == null) self.hash = nil;
 
           
           
-          if (o == null) {
-            o = nil;
-          };
-          return self.hash['$include?'](o);}, $$8.$$s = self, $$8.$$arity = 1, $$8))
+          if (o == null) o = nil;;
+          return self.hash['$include?'](o);}, {$$arity: 1, $$s: self})
       } else {
         return false
       }
-    }, $Set_$eq_eq$7.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$add', $Set_add$9 = function $$add(o) {
+    $def(self, '$add', function $$add(o) {
       var self = this, $writer = nil;
 
       
       
       $writer = [o, true];
-      $send(self.hash, '[]=', Opal.to_a($writer));
+      $send(self.hash, '[]=', $to_a($writer));
       $writer[$rb_minus($writer["length"], 1)];;
       return self;
-    }, $Set_add$9.$$arity = 1);
-    $alias(self, "<<", "add");
+    }, 1);
     
-    Opal.def(self, '$classify', $Set_classify$10 = function $$classify() {
-      var $iter = $Set_classify$10.$$p, block = $iter || nil, $$11, $$12, self = this, result = nil;
+    $def(self, '$classify', function $$classify() {
+      var block = $$classify.$$p || nil, self = this, result = nil;
 
-      if ($iter) $Set_classify$10.$$p = null;
-      
+      delete $$classify.$$p;
       
-      if ($iter) $Set_classify$10.$$p = null;;
-      if ((block !== nil)) {
-      } else {
+      ;
+      if (!(block !== nil)) {
         return self.$enum_for("classify")
       };
-      result = $send($$($nesting, 'Hash'), 'new', [], ($$11 = function(h, k){var self = $$11.$$s == null ? this : $$11.$$s, $writer = nil;
+      result = $send($$$('Hash'), 'new', [], function $$6(h, k){var self = $$6.$$s == null ? this : $$6.$$s, $writer = nil;
 
         
         
-        if (h == null) {
-          h = nil;
-        };
+        if (h == null) h = nil;;
         
-        if (k == null) {
-          k = nil;
-        };
+        if (k == null) k = nil;;
         $writer = [k, self.$class().$new()];
-        $send(h, '[]=', Opal.to_a($writer));
-        return $writer[$rb_minus($writer["length"], 1)];}, $$11.$$s = self, $$11.$$arity = 2, $$11));
-      $send(self, 'each', [], ($$12 = function(item){var self = $$12.$$s == null ? this : $$12.$$s;
-
+        $send(h, '[]=', $to_a($writer));
+        return $writer[$rb_minus($writer["length"], 1)];}, {$$arity: 2, $$s: self});
+      $send(self, 'each', [], function $$7(item){
         
         
-        if (item == null) {
-          item = nil;
-        };
-        return result['$[]'](Opal.yield1(block, item)).$add(item);}, $$12.$$s = self, $$12.$$arity = 1, $$12));
+        if (item == null) item = nil;;
+        return result['$[]'](Opal.yield1(block, item)).$add(item);}, 1);
       return result;
-    }, $Set_classify$10.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$collect!', $Set_collect$excl$13 = function() {
-      var $iter = $Set_collect$excl$13.$$p, block = $iter || nil, $$14, self = this, result = nil;
+    $def(self, '$collect!', function $Set_collect$excl$8() {
+      var block = $Set_collect$excl$8.$$p || nil, self = this, result = nil;
 
-      if ($iter) $Set_collect$excl$13.$$p = null;
-      
+      delete $Set_collect$excl$8.$$p;
       
-      if ($iter) $Set_collect$excl$13.$$p = null;;
-      if ((block !== nil)) {
-      } else {
+      ;
+      if (!(block !== nil)) {
         return self.$enum_for("collect!")
       };
       result = self.$class().$new();
-      $send(self, 'each', [], ($$14 = function(item){var self = $$14.$$s == null ? this : $$14.$$s;
-
+      $send(self, 'each', [], function $$9(item){
         
         
-        if (item == null) {
-          item = nil;
-        };
-        return result['$<<'](Opal.yield1(block, item));}, $$14.$$s = self, $$14.$$arity = 1, $$14));
+        if (item == null) item = nil;;
+        return result['$<<'](Opal.yield1(block, item));}, 1);
       return self.$replace(result);
-    }, $Set_collect$excl$13.$$arity = 0);
-    $alias(self, "map!", "collect!");
+    }, 0);
     
-    Opal.def(self, '$delete', $Set_delete$15 = function(o) {
+    $def(self, '$delete', function $Set_delete$10(o) {
       var self = this;
 
       
       self.hash.$delete(o);
       return self;
-    }, $Set_delete$15.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$delete?', $Set_delete$ques$16 = function(o) {
+    $def(self, '$delete?', function $Set_delete$ques$11(o) {
       var self = this;
 
       if ($truthy(self['$include?'](o))) {
@@ -1243,106 +1217,89 @@ Opal.modules["set"] = function(Opal) {
       } else {
         return nil
       }
-    }, $Set_delete$ques$16.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$delete_if', $Set_delete_if$17 = function $$delete_if() {
-      var $$18, $$19, $iter = $Set_delete_if$17.$$p, $yield = $iter || nil, self = this;
+    $def(self, '$delete_if', function $$delete_if() {
+      var $yield = $$delete_if.$$p || nil, self = this;
 
-      if ($iter) $Set_delete_if$17.$$p = null;
+      delete $$delete_if.$$p;
       
-      if (($yield !== nil)) {
-      } else {
+      if (!($yield !== nil)) {
         return self.$enum_for("delete_if")
       };
-      $send($send(self, 'select', [], ($$18 = function(o){var self = $$18.$$s == null ? this : $$18.$$s;
-
+      $send($send(self, 'select', [], function $$12(o){
         
         
-        if (o == null) {
-          o = nil;
-        };
-        return Opal.yield1($yield, o);;}, $$18.$$s = self, $$18.$$arity = 1, $$18)), 'each', [], ($$19 = function(o){var self = $$19.$$s == null ? this : $$19.$$s;
+        if (o == null) o = nil;;
+        return Opal.yield1($yield, o);;}, 1), 'each', [], function $$13(o){var self = $$13.$$s == null ? this : $$13.$$s;
         if (self.hash == null) self.hash = nil;
 
         
         
-        if (o == null) {
-          o = nil;
-        };
-        return self.hash.$delete(o);}, $$19.$$s = self, $$19.$$arity = 1, $$19));
+        if (o == null) o = nil;;
+        return self.hash.$delete(o);}, {$$arity: 1, $$s: self});
       return self;
-    }, $Set_delete_if$17.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$keep_if', $Set_keep_if$20 = function $$keep_if() {
-      var $$21, $$22, $iter = $Set_keep_if$20.$$p, $yield = $iter || nil, self = this;
+    $def(self, '$keep_if', function $$keep_if() {
+      var $yield = $$keep_if.$$p || nil, self = this;
 
-      if ($iter) $Set_keep_if$20.$$p = null;
+      delete $$keep_if.$$p;
       
-      if (($yield !== nil)) {
-      } else {
+      if (!($yield !== nil)) {
         return self.$enum_for("keep_if")
       };
-      $send($send(self, 'reject', [], ($$21 = function(o){var self = $$21.$$s == null ? this : $$21.$$s;
-
+      $send($send(self, 'reject', [], function $$14(o){
         
         
-        if (o == null) {
-          o = nil;
-        };
-        return Opal.yield1($yield, o);;}, $$21.$$s = self, $$21.$$arity = 1, $$21)), 'each', [], ($$22 = function(o){var self = $$22.$$s == null ? this : $$22.$$s;
+        if (o == null) o = nil;;
+        return Opal.yield1($yield, o);;}, 1), 'each', [], function $$15(o){var self = $$15.$$s == null ? this : $$15.$$s;
         if (self.hash == null) self.hash = nil;
 
         
         
-        if (o == null) {
-          o = nil;
-        };
-        return self.hash.$delete(o);}, $$22.$$s = self, $$22.$$arity = 1, $$22));
+        if (o == null) o = nil;;
+        return self.hash.$delete(o);}, {$$arity: 1, $$s: self});
       return self;
-    }, $Set_keep_if$20.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$reject!', $Set_reject$excl$23 = function() {
-      var $iter = $Set_reject$excl$23.$$p, block = $iter || nil, self = this, before = nil;
+    $def(self, '$reject!', function $Set_reject$excl$16() {
+      var block = $Set_reject$excl$16.$$p || nil, self = this, before = nil;
 
-      if ($iter) $Set_reject$excl$23.$$p = null;
+      delete $Set_reject$excl$16.$$p;
       
-      
-      if ($iter) $Set_reject$excl$23.$$p = null;;
-      if ((block !== nil)) {
-      } else {
+      ;
+      if (!(block !== nil)) {
         return self.$enum_for("reject!")
       };
       before = self.$size();
       $send(self, 'delete_if', [], block.$to_proc());
-      if (self.$size()['$=='](before)) {
+      if ($eqeq(self.$size(), before)) {
         return nil
       } else {
         return self
       };
-    }, $Set_reject$excl$23.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$select!', $Set_select$excl$24 = function() {
-      var $iter = $Set_select$excl$24.$$p, block = $iter || nil, self = this, before = nil;
+    $def(self, '$select!', function $Set_select$excl$17() {
+      var block = $Set_select$excl$17.$$p || nil, self = this, before = nil;
 
-      if ($iter) $Set_select$excl$24.$$p = null;
+      delete $Set_select$excl$17.$$p;
       
-      
-      if ($iter) $Set_select$excl$24.$$p = null;;
-      if ((block !== nil)) {
-      } else {
+      ;
+      if (!(block !== nil)) {
         return self.$enum_for("select!")
       };
       before = self.$size();
       $send(self, 'keep_if', [], block.$to_proc());
-      if (self.$size()['$=='](before)) {
+      if ($eqeq(self.$size(), before)) {
         return nil
       } else {
         return self
       };
-    }, $Set_select$excl$24.$$arity = 0);
-    $alias(self, "filter!", "select!");
+    }, 0);
     
-    Opal.def(self, '$add?', $Set_add$ques$25 = function(o) {
+    $def(self, '$add?', function $Set_add$ques$18(o) {
       var self = this;
 
       if ($truthy(self['$include?'](o))) {
@@ -1350,280 +1307,240 @@ Opal.modules["set"] = function(Opal) {
       } else {
         return self.$add(o)
       }
-    }, $Set_add$ques$25.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$each', $Set_each$26 = function $$each() {
-      var $iter = $Set_each$26.$$p, block = $iter || nil, self = this;
+    $def(self, '$each', function $$each() {
+      var block = $$each.$$p || nil, self = this;
 
-      if ($iter) $Set_each$26.$$p = null;
-      
+      delete $$each.$$p;
       
-      if ($iter) $Set_each$26.$$p = null;;
-      if ((block !== nil)) {
-      } else {
+      ;
+      if (!(block !== nil)) {
         return self.$enum_for("each")
       };
       $send(self.hash, 'each_key', [], block.$to_proc());
       return self;
-    }, $Set_each$26.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$empty?', $Set_empty$ques$27 = function() {
+    $def(self, '$empty?', function $Set_empty$ques$19() {
       var self = this;
 
       return self.hash['$empty?']()
-    }, $Set_empty$ques$27.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$eql?', $Set_eql$ques$28 = function(other) {
-      var $$29, self = this;
+    $def(self, '$eql?', function $Set_eql$ques$20(other) {
+      var self = this;
 
-      return self.hash['$eql?']($send(other, 'instance_eval', [], ($$29 = function(){var self = $$29.$$s == null ? this : $$29.$$s;
+      return self.hash['$eql?']($send(other, 'instance_eval', [], function $$21(){var self = $$21.$$s == null ? this : $$21.$$s;
         if (self.hash == null) self.hash = nil;
 
-        return self.hash}, $$29.$$s = self, $$29.$$arity = 0, $$29)))
-    }, $Set_eql$ques$28.$$arity = 1);
+        return self.hash}, {$$arity: 0, $$s: self}))
+    }, 1);
     
-    Opal.def(self, '$clear', $Set_clear$30 = function $$clear() {
+    $def(self, '$clear', function $$clear() {
       var self = this;
 
       
       self.hash.$clear();
       return self;
-    }, $Set_clear$30.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$include?', $Set_include$ques$31 = function(o) {
+    $def(self, '$include?', function $Set_include$ques$22(o) {
       var self = this;
 
       return self.hash['$include?'](o)
-    }, $Set_include$ques$31.$$arity = 1);
-    $alias(self, "member?", "include?");
+    }, 1);
     
-    Opal.def(self, '$merge', $Set_merge$32 = function $$merge(enum$) {
-      var $$33, self = this;
+    $def(self, '$merge', function $$merge(enum$) {
+      var self = this;
 
       
-      $send(enum$, 'each', [], ($$33 = function(item){var self = $$33.$$s == null ? this : $$33.$$s;
+      $send(enum$, 'each', [], function $$23(item){var self = $$23.$$s == null ? this : $$23.$$s;
 
         
         
-        if (item == null) {
-          item = nil;
-        };
-        return self.$add(item);}, $$33.$$s = self, $$33.$$arity = 1, $$33));
+        if (item == null) item = nil;;
+        return self.$add(item);}, {$$arity: 1, $$s: self});
       return self;
-    }, $Set_merge$32.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$replace', $Set_replace$34 = function $$replace(enum$) {
+    $def(self, '$replace', function $$replace(enum$) {
       var self = this;
 
       
       self.$clear();
       self.$merge(enum$);
       return self;
-    }, $Set_replace$34.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$size', $Set_size$35 = function $$size() {
+    $def(self, '$size', function $$size() {
       var self = this;
 
       return self.hash.$size()
-    }, $Set_size$35.$$arity = 0);
-    $alias(self, "length", "size");
+    }, 0);
     
-    Opal.def(self, '$subtract', $Set_subtract$36 = function $$subtract(enum$) {
-      var $$37, self = this;
+    $def(self, '$subtract', function $$subtract(enum$) {
+      var self = this;
 
       
-      $send(enum$, 'each', [], ($$37 = function(item){var self = $$37.$$s == null ? this : $$37.$$s;
+      $send(enum$, 'each', [], function $$24(item){var self = $$24.$$s == null ? this : $$24.$$s;
 
         
         
-        if (item == null) {
-          item = nil;
-        };
-        return self.$delete(item);}, $$37.$$s = self, $$37.$$arity = 1, $$37));
+        if (item == null) item = nil;;
+        return self.$delete(item);}, {$$arity: 1, $$s: self});
       return self;
-    }, $Set_subtract$36.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$|', $Set_$$38 = function(enum$) {
+    $def(self, '$|', function $Set_$$25(enum$) {
       var self = this;
 
       
-      if ($truthy(enum$['$respond_to?']("each"))) {
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "value must be enumerable")
+      if (!$truthy(enum$['$respond_to?']("each"))) {
+        $Kernel.$raise($$$('ArgumentError'), "value must be enumerable")
       };
       return self.$dup().$merge(enum$);
-    }, $Set_$$38.$$arity = 1);
+    }, 1);
+    
+    function is_set(set) {
+      ($truthy(($ret_or_1 = (set)['$is_a?']($$$('Set')))) ? ($ret_or_1) : ($Kernel.$raise($$$('ArgumentError'), "value must be a set")))
+    }
+  ;
     
-    Opal.def(self, '$superset?', $Set_superset$ques$39 = function(set) {
-      var $$40, self = this, $ret_or_2 = nil;
+    $def(self, '$superset?', function $Set_superset$ques$26(set) {
+      var self = this;
 
       
-      if ($truthy(($ret_or_2 = set['$is_a?']($$($nesting, 'Set'))))) {
-        $ret_or_2
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "value must be a set")
-      };
+      is_set(set);
       if ($truthy($rb_lt(self.$size(), set.$size()))) {
-        return false};
-      return $send(set, 'all?', [], ($$40 = function(o){var self = $$40.$$s == null ? this : $$40.$$s;
+        return false
+      };
+      return $send(set, 'all?', [], function $$27(o){var self = $$27.$$s == null ? this : $$27.$$s;
 
         
         
-        if (o == null) {
-          o = nil;
-        };
-        return self['$include?'](o);}, $$40.$$s = self, $$40.$$arity = 1, $$40));
-    }, $Set_superset$ques$39.$$arity = 1);
-    $alias(self, ">=", "superset?");
+        if (o == null) o = nil;;
+        return self['$include?'](o);}, {$$arity: 1, $$s: self});
+    }, 1);
     
-    Opal.def(self, '$proper_superset?', $Set_proper_superset$ques$41 = function(set) {
-      var $$42, self = this, $ret_or_3 = nil;
+    $def(self, '$proper_superset?', function $Set_proper_superset$ques$28(set) {
+      var self = this;
 
       
-      if ($truthy(($ret_or_3 = set['$is_a?']($$($nesting, 'Set'))))) {
-        $ret_or_3
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "value must be a set")
-      };
+      is_set(set);
       if ($truthy($rb_le(self.$size(), set.$size()))) {
-        return false};
-      return $send(set, 'all?', [], ($$42 = function(o){var self = $$42.$$s == null ? this : $$42.$$s;
+        return false
+      };
+      return $send(set, 'all?', [], function $$29(o){var self = $$29.$$s == null ? this : $$29.$$s;
 
         
         
-        if (o == null) {
-          o = nil;
-        };
-        return self['$include?'](o);}, $$42.$$s = self, $$42.$$arity = 1, $$42));
-    }, $Set_proper_superset$ques$41.$$arity = 1);
-    $alias(self, ">", "proper_superset?");
+        if (o == null) o = nil;;
+        return self['$include?'](o);}, {$$arity: 1, $$s: self});
+    }, 1);
     
-    Opal.def(self, '$subset?', $Set_subset$ques$43 = function(set) {
-      var $$44, self = this, $ret_or_4 = nil;
+    $def(self, '$subset?', function $Set_subset$ques$30(set) {
+      var self = this;
 
       
-      if ($truthy(($ret_or_4 = set['$is_a?']($$($nesting, 'Set'))))) {
-        $ret_or_4
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "value must be a set")
-      };
+      is_set(set);
       if ($truthy($rb_lt(set.$size(), self.$size()))) {
-        return false};
-      return $send(self, 'all?', [], ($$44 = function(o){var self = $$44.$$s == null ? this : $$44.$$s;
-
+        return false
+      };
+      return $send(self, 'all?', [], function $$31(o){
         
         
-        if (o == null) {
-          o = nil;
-        };
-        return set['$include?'](o);}, $$44.$$s = self, $$44.$$arity = 1, $$44));
-    }, $Set_subset$ques$43.$$arity = 1);
-    $alias(self, "<=", "subset?");
+        if (o == null) o = nil;;
+        return set['$include?'](o);}, 1);
+    }, 1);
     
-    Opal.def(self, '$proper_subset?', $Set_proper_subset$ques$45 = function(set) {
-      var $$46, self = this, $ret_or_5 = nil;
+    $def(self, '$proper_subset?', function $Set_proper_subset$ques$32(set) {
+      var self = this;
 
       
-      if ($truthy(($ret_or_5 = set['$is_a?']($$($nesting, 'Set'))))) {
-        $ret_or_5
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "value must be a set")
-      };
+      is_set(set);
       if ($truthy($rb_le(set.$size(), self.$size()))) {
-        return false};
-      return $send(self, 'all?', [], ($$46 = function(o){var self = $$46.$$s == null ? this : $$46.$$s;
-
+        return false
+      };
+      return $send(self, 'all?', [], function $$33(o){
         
         
-        if (o == null) {
-          o = nil;
-        };
-        return set['$include?'](o);}, $$46.$$s = self, $$46.$$arity = 1, $$46));
-    }, $Set_proper_subset$ques$45.$$arity = 1);
-    $alias(self, "<", "proper_subset?");
+        if (o == null) o = nil;;
+        return set['$include?'](o);}, 1);
+    }, 1);
     
-    Opal.def(self, '$intersect?', $Set_intersect$ques$47 = function(set) {
-      var $$48, $$49, self = this;
+    $def(self, '$intersect?', function $Set_intersect$ques$34(set) {
+      var self = this;
 
       
-      if ($truthy(set['$is_a?']($$($nesting, 'Set')))) {
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "value must be a set")
-      };
+      is_set(set);
       if ($truthy($rb_lt(self.$size(), set.$size()))) {
-        return $send(self, 'any?', [], ($$48 = function(o){var self = $$48.$$s == null ? this : $$48.$$s;
-
+        return $send(self, 'any?', [], function $$35(o){
           
           
-          if (o == null) {
-            o = nil;
-          };
-          return set['$include?'](o);}, $$48.$$s = self, $$48.$$arity = 1, $$48))
+          if (o == null) o = nil;;
+          return set['$include?'](o);}, 1)
       } else {
-        return $send(set, 'any?', [], ($$49 = function(o){var self = $$49.$$s == null ? this : $$49.$$s;
+        return $send(set, 'any?', [], function $$36(o){var self = $$36.$$s == null ? this : $$36.$$s;
 
           
           
-          if (o == null) {
-            o = nil;
-          };
-          return self['$include?'](o);}, $$49.$$s = self, $$49.$$arity = 1, $$49))
+          if (o == null) o = nil;;
+          return self['$include?'](o);}, {$$arity: 1, $$s: self})
       };
-    }, $Set_intersect$ques$47.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$disjoint?', $Set_disjoint$ques$50 = function(set) {
+    $def(self, '$disjoint?', function $Set_disjoint$ques$37(set) {
       var self = this;
 
       return self['$intersect?'](set)['$!']()
-    }, $Set_disjoint$ques$50.$$arity = 1);
-    $alias(self, "+", "|");
-    $alias(self, "union", "|");
-    return (Opal.def(self, '$to_a', $Set_to_a$51 = function $$to_a() {
+    }, 1);
+    
+    $def(self, '$to_a', function $$to_a() {
       var self = this;
 
       return self.hash.$keys()
-    }, $Set_to_a$51.$$arity = 0), nil) && 'to_a';
-  })($nesting[0], null, $nesting);
+    }, 0);
+    $alias(self, "+", "|");
+    $alias(self, "<", "proper_subset?");
+    $alias(self, "<<", "add");
+    $alias(self, "<=", "subset?");
+    $alias(self, ">", "proper_superset?");
+    $alias(self, ">=", "superset?");
+    $alias(self, "difference", "-");
+    $alias(self, "filter!", "select!");
+    $alias(self, "length", "size");
+    $alias(self, "map!", "collect!");
+    $alias(self, "member?", "include?");
+    return $alias(self, "union", "|");
+  })('::', null);
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Enumerable');
 
-    var $nesting = [self].concat($parent_nesting), $Enumerable_to_set$52;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-    return (Opal.def(self, '$to_set', $Enumerable_to_set$52 = function $$to_set($a, $b) {
-      var $iter = $Enumerable_to_set$52.$$p, block = $iter || nil, $post_args, klass, args, self = this;
+    return $def(self, '$to_set', function $$to_set($a, $b) {
+      var block = $$to_set.$$p || nil, $post_args, klass, args, self = this;
 
-      if ($iter) $Enumerable_to_set$52.$$p = null;
+      delete $$to_set.$$p;
       
+      ;
       
-      if ($iter) $Enumerable_to_set$52.$$p = null;;
+      $post_args = Opal.slice.call(arguments);
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
-      
-      if ($post_args.length > 0) {
-        klass = $post_args[0];
-        $post_args.splice(0, 1);
-      }
-      if (klass == null) {
-        klass = $$($nesting, 'Set');
-      };
+      if ($post_args.length > 0) klass = $post_args.shift();
+      if (klass == null) klass = $$('Set');;
       
       args = $post_args;;
-      return $send(klass, 'new', [self].concat(Opal.to_a(args)), block.$to_proc());
-    }, $Enumerable_to_set$52.$$arity = -1), nil) && 'to_set'
-  })($nesting[0], $nesting);
+      return $send(klass, 'new', [self].concat($to_a(args)), block.$to_proc());
+    }, -1)
+  })('::', $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["ast/node"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_times(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs * rhs : lhs['$*'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $alias = Opal.alias, $hash2 = Opal.hash2, $truthy = Opal.truthy, $send = Opal.send;
+Opal.modules["ast/node"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $alias = Opal.alias, $hash2 = Opal.hash2, $def = Opal.def, $truthy = Opal.truthy, $send = Opal.send, $eqeq = Opal.eqeq, $rb_plus = Opal.rb_plus, $rb_times = Opal.rb_times, $to_a = Opal.to_a;
 
-  Opal.add_stubs(['$attr_reader', '$to_sym', '$freeze', '$to_a', '$assign_properties', '$hash', '$class', '$eql?', '$type', '$children', '$each', '$instance_variable_set', '$protected', '$private', '$==', '$nil?', '$original_dup', '$send', '$equal?', '$respond_to?', '$to_ast', '$updated', '$+', '$*', '$fancy_type', '$is_a?', '$to_sexp', '$inspect', '$map', '$to_sexp_array', '$gsub', '$to_s']);
+  Opal.add_stubs('attr_reader,to_sym,freeze,to_a,assign_properties,hash,class,eql?,type,children,each,instance_variable_set,protected,private,nil?,==,original_dup,send,equal?,respond_to?,to_ast,updated,+,*,fancy_type,is_a?,to_sexp,inspect,map,to_sexp_array,gsub,to_s');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'AST');
 
@@ -1632,116 +1549,78 @@ Opal.modules["ast/node"] = function(Opal) {
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Node');
 
-      var $nesting = [self].concat($parent_nesting), $Node_initialize$1, $Node_eql$ques$2, $Node_assign_properties$3, $Node_dup$5, $Node_updated$6, $Node_$eq_eq$7, $Node_concat$8, $Node_append$9, $Node_to_sexp$10, $Node_inspect$12, $Node_to_ast$14, $Node_to_sexp_array$15, $Node_deconstruct$17, $Node_fancy_type$18;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.type = self.$$prototype.children = nil;
+      $proto.type = $proto.children = nil;
       
       self.$attr_reader("type");
       self.$attr_reader("children");
       $alias(self, "to_a", "children");
       self.$attr_reader("hash");
       
-      Opal.def(self, '$initialize', $Node_initialize$1 = function $$initialize(type, children, properties) {
+      $def(self, '$initialize', function $$initialize(type, children, properties) {
         var $a, self = this;
 
         
         
-        if (children == null) {
-          children = [];
-        };
+        if (children == null) children = [];;
         
-        if (properties == null) {
-          properties = $hash2([], {});
-        };
+        if (properties == null) properties = $hash2([], {});;
         $a = [type.$to_sym(), children.$to_a().$freeze()], (self.type = $a[0]), (self.children = $a[1]), $a;
         self.$assign_properties(properties);
         self.hash = [self.type, self.children, self.$class()].$hash();
         return self.$freeze();
-      }, $Node_initialize$1.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$eql?', $Node_eql$ques$2 = function(other) {
+      $def(self, '$eql?', function $Node_eql$ques$1(other) {
         var self = this, $ret_or_1 = nil, $ret_or_2 = nil;
 
-        if ($truthy(($ret_or_1 = (function() {if ($truthy(($ret_or_2 = self.$class()['$eql?'](other.$class())))) {
-          return self.type['$eql?'](other.$type())
-        } else {
-          return $ret_or_2
-        }; return nil; })()))) {
+        if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = self.$class()['$eql?'](other.$class()))) ? (self.type['$eql?'](other.$type())) : ($ret_or_2))))) {
           return self.children['$eql?'](other.$children())
         } else {
           return $ret_or_1
         }
-      }, $Node_eql$ques$2.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$assign_properties', $Node_assign_properties$3 = function $$assign_properties(properties) {
-        var $$4, self = this;
+      $def(self, '$assign_properties', function $$assign_properties(properties) {
+        var self = this;
 
         
-        $send(properties, 'each', [], ($$4 = function(name, value){var self = $$4.$$s == null ? this : $$4.$$s;
+        $send(properties, 'each', [], function $$2(name, value){var self = $$2.$$s == null ? this : $$2.$$s;
 
           
           
-          if (name == null) {
-            name = nil;
-          };
+          if (name == null) name = nil;;
           
-          if (value == null) {
-            value = nil;
-          };
-          return self.$instance_variable_set("" + "@" + (name), value);}, $$4.$$s = self, $$4.$$arity = 2, $$4));
+          if (value == null) value = nil;;
+          return self.$instance_variable_set("@" + (name), value);}, {$$arity: 2, $$s: self});
         return nil;
-      }, $Node_assign_properties$3.$$arity = 1);
+      }, 1);
       self.$protected("assign_properties");
       $alias(self, "original_dup", "dup");
       self.$private("original_dup");
       
-      Opal.def(self, '$dup', $Node_dup$5 = function $$dup() {
+      $def(self, '$dup', function $$dup() {
         var self = this;
 
         return self
-      }, $Node_dup$5.$$arity = 0);
+      }, 0);
       $alias(self, "clone", "dup");
       
-      Opal.def(self, '$updated', $Node_updated$6 = function $$updated(type, children, properties) {
-        var self = this, new_type = nil, $ret_or_3 = nil, new_children = nil, $ret_or_4 = nil, new_properties = nil, $ret_or_5 = nil, $ret_or_6 = nil, $ret_or_7 = nil, copy = nil;
+      $def(self, '$updated', function $$updated(type, children, properties) {
+        var self = this, new_type = nil, $ret_or_1 = nil, new_children = nil, new_properties = nil, copy = nil;
 
         
         
-        if (type == null) {
-          type = nil;
-        };
+        if (type == null) type = nil;;
         
-        if (children == null) {
-          children = nil;
-        };
+        if (children == null) children = nil;;
         
-        if (properties == null) {
-          properties = nil;
-        };
-        new_type = (function() {if ($truthy(($ret_or_3 = type))) {
-          return $ret_or_3
-        } else {
-          return self.type
-        }; return nil; })();
-        new_children = (function() {if ($truthy(($ret_or_4 = children))) {
-          return $ret_or_4
-        } else {
-          return self.children
-        }; return nil; })();
-        new_properties = (function() {if ($truthy(($ret_or_5 = properties))) {
-          return $ret_or_5
-        } else {
-          return $hash2([], {})
-        }; return nil; })();
-        if ($truthy((function() {if ($truthy(($ret_or_6 = (function() {if ($truthy(($ret_or_7 = self.type['$=='](new_type)))) {
-          return self.children['$=='](new_children)
-        } else {
-          return $ret_or_7
-        }; return nil; })()))) {
-          return properties['$nil?']()
-        } else {
-          return $ret_or_6
-        }; return nil; })())) {
+        if (properties == null) properties = nil;;
+        new_type = ($truthy(($ret_or_1 = type)) ? ($ret_or_1) : (self.type));
+        new_children = ($truthy(($ret_or_1 = children)) ? ($ret_or_1) : (self.children));
+        new_properties = ($truthy(($ret_or_1 = properties)) ? ($ret_or_1) : ($hash2([], {})));
+        if ((($eqeq(self.type, new_type) && ($eqeq(self.children, new_children))) && ($truthy(properties['$nil?']())))) {
           return self
         } else {
           
@@ -1749,138 +1628,124 @@ Opal.modules["ast/node"] = function(Opal) {
           copy.$send("initialize", new_type, new_children, new_properties);
           return copy;
         };
-      }, $Node_updated$6.$$arity = -1);
+      }, -1);
       
-      Opal.def(self, '$==', $Node_$eq_eq$7 = function(other) {
-        var self = this, $ret_or_8 = nil;
+      $def(self, '$==', function $Node_$eq_eq$3(other) {
+        var self = this, $ret_or_1 = nil;
 
         if ($truthy(self['$equal?'](other))) {
           return true
         } else if ($truthy(other['$respond_to?']("to_ast"))) {
           
           other = other.$to_ast();
-          if ($truthy(($ret_or_8 = other.$type()['$=='](self.$type())))) {
+          if ($truthy(($ret_or_1 = other.$type()['$=='](self.$type())))) {
             return other.$children()['$=='](self.$children())
           } else {
-            return $ret_or_8
+            return $ret_or_1
           };
         } else {
           return false
         }
-      }, $Node_$eq_eq$7.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$concat', $Node_concat$8 = function $$concat(array) {
+      $def(self, '$concat', function $$concat(array) {
         var self = this;
 
         return self.$updated(nil, $rb_plus(self.children, array.$to_a()))
-      }, $Node_concat$8.$$arity = 1);
+      }, 1);
       $alias(self, "+", "concat");
       
-      Opal.def(self, '$append', $Node_append$9 = function $$append(element) {
+      $def(self, '$append', function $$append(element) {
         var self = this;
 
         return self.$updated(nil, $rb_plus(self.children, [element]))
-      }, $Node_append$9.$$arity = 1);
+      }, 1);
       $alias(self, "<<", "append");
       
-      Opal.def(self, '$to_sexp', $Node_to_sexp$10 = function $$to_sexp(indent) {
-        var $$11, self = this, indented = nil, sexp = nil;
+      $def(self, '$to_sexp', function $$to_sexp(indent) {
+        var self = this, indented = nil, sexp = nil;
 
         
         
-        if (indent == null) {
-          indent = 0;
-        };
+        if (indent == null) indent = 0;;
         indented = $rb_times("  ", indent);
         sexp = "" + (indented) + "(" + (self.$fancy_type());
-        $send(self.$children(), 'each', [], ($$11 = function(child){var self = $$11.$$s == null ? this : $$11.$$s;
-
+        $send(self.$children(), 'each', [], function $$4(child){
           
           
-          if (child == null) {
-            child = nil;
-          };
-          if ($truthy(child['$is_a?']($$($nesting, 'Node')))) {
-            return (sexp = $rb_plus(sexp, "" + "\n" + (child.$to_sexp($rb_plus(indent, 1)))))
+          if (child == null) child = nil;;
+          if ($truthy(child['$is_a?']($$('Node')))) {
+            return (sexp = $rb_plus(sexp, "\n" + (child.$to_sexp($rb_plus(indent, 1)))))
           } else {
-            return (sexp = $rb_plus(sexp, "" + " " + (child.$inspect())))
-          };}, $$11.$$s = self, $$11.$$arity = 1, $$11));
+            return (sexp = $rb_plus(sexp, " " + (child.$inspect())))
+          };}, 1);
         sexp = $rb_plus(sexp, ")");
         return sexp;
-      }, $Node_to_sexp$10.$$arity = -1);
+      }, -1);
       $alias(self, "to_s", "to_sexp");
       
-      Opal.def(self, '$inspect', $Node_inspect$12 = function $$inspect(indent) {
-        var $$13, self = this, indented = nil, sexp = nil;
+      $def(self, '$inspect', function $$inspect(indent) {
+        var self = this, indented = nil, sexp = nil;
 
         
         
-        if (indent == null) {
-          indent = 0;
-        };
+        if (indent == null) indent = 0;;
         indented = $rb_times("  ", indent);
         sexp = "" + (indented) + "s(:" + (self.type);
-        $send(self.$children(), 'each', [], ($$13 = function(child){var self = $$13.$$s == null ? this : $$13.$$s;
-
+        $send(self.$children(), 'each', [], function $$5(child){
           
           
-          if (child == null) {
-            child = nil;
-          };
-          if ($truthy(child['$is_a?']($$($nesting, 'Node')))) {
-            return (sexp = $rb_plus(sexp, "" + ",\n" + (child.$inspect($rb_plus(indent, 1)))))
+          if (child == null) child = nil;;
+          if ($truthy(child['$is_a?']($$('Node')))) {
+            return (sexp = $rb_plus(sexp, ",\n" + (child.$inspect($rb_plus(indent, 1)))))
           } else {
-            return (sexp = $rb_plus(sexp, "" + ", " + (child.$inspect())))
-          };}, $$13.$$s = self, $$13.$$arity = 1, $$13));
+            return (sexp = $rb_plus(sexp, ", " + (child.$inspect())))
+          };}, 1);
         sexp = $rb_plus(sexp, ")");
         return sexp;
-      }, $Node_inspect$12.$$arity = -1);
+      }, -1);
       
-      Opal.def(self, '$to_ast', $Node_to_ast$14 = function $$to_ast() {
+      $def(self, '$to_ast', function $$to_ast() {
         var self = this;
 
         return self
-      }, $Node_to_ast$14.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$to_sexp_array', $Node_to_sexp_array$15 = function $$to_sexp_array() {
-        var $$16, self = this, children_sexp_arrs = nil;
+      $def(self, '$to_sexp_array', function $$to_sexp_array() {
+        var self = this, children_sexp_arrs = nil;
 
         
-        children_sexp_arrs = $send(self.$children(), 'map', [], ($$16 = function(child){var self = $$16.$$s == null ? this : $$16.$$s;
-
+        children_sexp_arrs = $send(self.$children(), 'map', [], function $$6(child){
           
           
-          if (child == null) {
-            child = nil;
-          };
-          if ($truthy(child['$is_a?']($$($nesting, 'Node')))) {
+          if (child == null) child = nil;;
+          if ($truthy(child['$is_a?']($$('Node')))) {
             return child.$to_sexp_array()
           } else {
             return child
-          };}, $$16.$$s = self, $$16.$$arity = 1, $$16));
-        return [self.$type()].concat(Opal.to_a(children_sexp_arrs));
-      }, $Node_to_sexp_array$15.$$arity = 0);
+          };}, 1);
+        return [self.$type()].concat($to_a(children_sexp_arrs));
+      }, 0);
       
-      Opal.def(self, '$deconstruct', $Node_deconstruct$17 = function $$deconstruct() {
+      $def(self, '$deconstruct', function $$deconstruct() {
         var self = this;
 
-        return [self.$type()].concat(Opal.to_a(self.$children()))
-      }, $Node_deconstruct$17.$$arity = 0);
+        return [self.$type()].concat($to_a(self.$children()))
+      }, 0);
       self.$protected();
-      return (Opal.def(self, '$fancy_type', $Node_fancy_type$18 = function $$fancy_type() {
+      return $def(self, '$fancy_type', function $$fancy_type() {
         var self = this;
 
         return self.type.$to_s().$gsub("_", "-")
-      }, $Node_fancy_type$18.$$arity = 0), nil) && 'fancy_type';
+      }, 0);
     })($nesting[0], null, $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["ast/processor/mixin"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send;
+Opal.modules["ast/processor/mixin"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $def = Opal.def, $send = Opal.send;
 
-  Opal.add_stubs(['$nil?', '$to_ast', '$type', '$respond_to?', '$send', '$handler_missing', '$map', '$to_a', '$process']);
+  Opal.add_stubs('nil?,to_ast,type,respond_to?,send,handler_missing,map,to_a,process');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'AST');
 
@@ -1891,58 +1756,55 @@ Opal.modules["ast/processor/mixin"] = function(Opal) {
 
       var $nesting = [self].concat($parent_nesting);
 
-      return (function($base, $parent_nesting) {
+      return (function($base) {
         var self = $module($base, 'Mixin');
 
-        var $nesting = [self].concat($parent_nesting), $Mixin_process$1, $Mixin_process_all$2, $Mixin_handler_missing$4;
-
         
         
-        Opal.def(self, '$process', $Mixin_process$1 = function $$process(node) {
+        
+        $def(self, '$process', function $$process(node) {
           var self = this, on_handler = nil, new_node = nil;
 
           
           if ($truthy(node['$nil?']())) {
-            return nil};
+            return nil
+          };
           node = node.$to_ast();
-          on_handler = "" + "on_" + (node.$type());
+          on_handler = "on_" + (node.$type());
           if ($truthy(self['$respond_to?'](on_handler))) {
             new_node = self.$send(on_handler, node)
           } else {
             new_node = self.$handler_missing(node)
           };
           if ($truthy(new_node)) {
-            node = new_node};
+            node = new_node
+          };
           return node;
-        }, $Mixin_process$1.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$process_all', $Mixin_process_all$2 = function $$process_all(nodes) {
-          var $$3, self = this;
+        $def(self, '$process_all', function $$process_all(nodes) {
+          var self = this;
 
-          return $send(nodes.$to_a(), 'map', [], ($$3 = function(node){var self = $$3.$$s == null ? this : $$3.$$s;
+          return $send(nodes.$to_a(), 'map', [], function $$1(node){var self = $$1.$$s == null ? this : $$1.$$s;
 
             
             
-            if (node == null) {
-              node = nil;
-            };
-            return self.$process(node);}, $$3.$$s = self, $$3.$$arity = 1, $$3))
-        }, $Mixin_process_all$2.$$arity = 1);
-        return (Opal.def(self, '$handler_missing', $Mixin_handler_missing$4 = function $$handler_missing(node) {
-          var self = this;
-
+            if (node == null) node = nil;;
+            return self.$process(node);}, {$$arity: 1, $$s: self})
+        }, 1);
+        return $def(self, '$handler_missing', function $$handler_missing(node) {
+          
           return nil
-        }, $Mixin_handler_missing$4.$$arity = 1), nil) && 'handler_missing';
-      })($nesting[0], $nesting)
+        }, 1);
+      })($nesting[0])
     })($nesting[0], null, $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["ast/processor"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass;
+Opal.modules["ast/processor"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass;
 
-  Opal.add_stubs(['$require', '$include']);
+  Opal.add_stubs('require,include');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'AST');
 
@@ -1951,20 +1813,19 @@ Opal.modules["ast/processor"] = function(Opal) {
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Processor');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
       self.$require("ast/processor/mixin");
-      return self.$include($$($nesting, 'Mixin'));
+      return self.$include($$('Mixin'));
     })($nesting[0], null, $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["ast/sexp"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module;
+Opal.modules["ast/sexp"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $def = Opal.def;
 
-  Opal.add_stubs(['$new']);
+  Opal.add_stubs('new');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'AST');
 
@@ -1973,47 +1834,41 @@ Opal.modules["ast/sexp"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Sexp');
 
-      var $nesting = [self].concat($parent_nesting), $Sexp_s$1;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (Opal.def(self, '$s', $Sexp_s$1 = function $$s(type, $a) {
-        var $post_args, children, self = this;
+      return $def(self, '$s', function $$s(type, $a) {
+        var $post_args, children;
 
         
         
-        $post_args = Opal.slice.call(arguments, 1, arguments.length);
+        $post_args = Opal.slice.call(arguments, 1);
         
         children = $post_args;;
-        return $$($nesting, 'Node').$new(type, children);
-      }, $Sexp_s$1.$$arity = -2), nil) && 's'
+        return $$('Node').$new(type, children);
+      }, -2)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["ast"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module;
+Opal.modules["ast"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module;
 
-  Opal.add_stubs(['$require']);
-  return (function($base, $parent_nesting) {
+  Opal.add_stubs('require');
+  return (function($base) {
     var self = $module($base, 'AST');
 
-    var $nesting = [self].concat($parent_nesting);
-
+    
     
     self.$require("ast/node");
     self.$require("ast/processor");
     return self.$require("ast/sexp");
-  })($nesting[0], $nesting)
+  })($nesting[0])
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/ast/node"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $alias = Opal.alias, $truthy = Opal.truthy, $send = Opal.send;
+Opal.modules["parser/ast/node"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $alias = Opal.alias, $truthy = Opal.truthy, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $def = Opal.def;
 
-  Opal.add_stubs(['$attr_reader', '$[]', '$frozen?', '$dup', '$node=', '$-']);
+  Opal.add_stubs('attr_reader,[],frozen?,dup,node=,-');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -2024,40 +1879,39 @@ Opal.modules["parser/ast/node"] = function(Opal) {
 
       var $nesting = [self].concat($parent_nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'Node');
 
-        var $nesting = [self].concat($parent_nesting), $Node_assign_properties$1;
-
+        
         
         self.$attr_reader("location");
         $alias(self, "loc", "location");
-        return (Opal.def(self, '$assign_properties', $Node_assign_properties$1 = function $$assign_properties(properties) {
+        return $def(self, '$assign_properties', function $$assign_properties(properties) {
           var self = this, location = nil, $writer = nil;
 
           if ($truthy((location = properties['$[]']("location")))) {
             
             if ($truthy(location['$frozen?']())) {
-              location = location.$dup()};
+              location = location.$dup()
+            };
             
             $writer = [self];
-            $send(location, 'node=', Opal.to_a($writer));
+            $send(location, 'node=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
             return (self.location = location);
           } else {
             return nil
           }
-        }, $Node_assign_properties$1.$$arity = 1), nil) && 'assign_properties';
-      })($nesting[0], $$$($$$('::', 'AST'), 'Node'), $nesting)
+        }, 1);
+      })($nesting[0], $$$($$$('AST'), 'Node'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/ast/node"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $hash2 = Opal.hash2, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["opal/ast/node"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $hash2 = Opal.hash2, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$attr_reader', '$[]', '$frozen?', '$dup', '$merge!', '$loc', '$line', '$column']);
+  Opal.add_stubs('require,attr_reader,[],frozen?,dup,merge!,loc,line,column');
   
   self.$require("ast");
   self.$require("parser/ast/node");
@@ -2071,40 +1925,33 @@ Opal.modules["opal/ast/node"] = function(Opal) {
 
       var $nesting = [self].concat($parent_nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'Node');
 
-        var $nesting = [self].concat($parent_nesting), $Node_assign_properties$1, $Node_line$2, $Node_column$3;
+        var $proto = self.$$prototype;
 
-        self.$$prototype.meta = nil;
+        $proto.meta = nil;
         
         self.$attr_reader("meta");
         
-        Opal.def(self, '$assign_properties', $Node_assign_properties$1 = function $$assign_properties(properties) {
-          var $iter = $Node_assign_properties$1.$$p, $yield = $iter || nil, self = this, meta = nil, $ret_or_1 = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        $def(self, '$assign_properties', function $$assign_properties(properties) {
+          var $yield = $$assign_properties.$$p || nil, self = this, meta = nil, $ret_or_1 = nil;
 
-          if ($iter) $Node_assign_properties$1.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$assign_properties.$$p;
           
           if ($truthy((meta = properties['$[]']("meta")))) {
             
             if ($truthy(meta['$frozen?']())) {
-              meta = meta.$dup()};
+              meta = meta.$dup()
+            };
             self.meta['$merge!'](meta);
           } else {
-            self.meta = (function() {if ($truthy(($ret_or_1 = self.meta))) {
-              return $ret_or_1
-            } else {
-              return $hash2([], {})
-            }; return nil; })()
+            self.meta = ($truthy(($ret_or_1 = self.meta)) ? ($ret_or_1) : ($hash2([], {})))
           };
-          return $send2(self, $find_super(self, 'assign_properties', $Node_assign_properties$1, false, true), 'assign_properties', $zuper, $iter);
-        }, $Node_assign_properties$1.$$arity = 1);
+          return $send2(self, $find_super(self, 'assign_properties', $$assign_properties, false, true), 'assign_properties', [properties], $yield);
+        }, 1);
         
-        Opal.def(self, '$line', $Node_line$2 = function $$line() {
+        $def(self, '$line', function $$line() {
           var self = this;
 
           if ($truthy(self.$loc())) {
@@ -2112,8 +1959,8 @@ Opal.modules["opal/ast/node"] = function(Opal) {
           } else {
             return nil
           }
-        }, $Node_line$2.$$arity = 0);
-        return (Opal.def(self, '$column', $Node_column$3 = function $$column() {
+        }, 0);
+        return $def(self, '$column', function $$column() {
           var self = this;
 
           if ($truthy(self.$loc())) {
@@ -2121,122 +1968,86 @@ Opal.modules["opal/ast/node"] = function(Opal) {
           } else {
             return nil
           }
-        }, $Node_column$3.$$arity = 0), nil) && 'column';
-      })($nesting[0], $$$($$$($$$('::', 'Parser'), 'AST'), 'Node'), $nesting)
+        }, 0);
+      })($nesting[0], $$$($$$($$$('Parser'), 'AST'), 'Node'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["racc/parser"] = function(Opal) {
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_ge(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs >= rhs : lhs['$>='](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_le(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs <= rhs : lhs['$<='](rhs);
-  }
-  function $rb_times(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs * rhs : lhs['$*'](rhs);
-  }
-  var $a, self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $gvars = Opal.gvars, $send = Opal.send;
+Opal.modules["racc/parser"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $a, $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $const_set = Opal.const_set, $defs = Opal.defs, $gvars = Opal.gvars, $rb_lt = Opal.rb_lt, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $def = Opal.def, $to_ary = Opal.to_ary, $neqeq = Opal.neqeq, $rb_plus = Opal.rb_plus, $eqeq = Opal.eqeq, $rb_ge = Opal.rb_ge, $rb_gt = Opal.rb_gt, $eqeqeq = Opal.eqeqeq, $rb_le = Opal.rb_le, $rb_times = Opal.rb_times;
 
-  Opal.add_stubs(['$[]', '$class', '$<', '$size', '$[]=', '$-', '$__send__', '$_racc_setup', '$raise', '$_racc_init_sysvars', '$catch', '$!=', '$next_token', '$racc_read_token', '$+', '$>=', '$==', '$_racc_evalact', '$!', '$>', '$push', '$racc_shift', '$-@', '$_racc_do_reduce', '$===', '$racc_accept', '$throw', '$on_error', '$<=', '$pop', '$racc_e_pop', '$inspect', '$racc_next_state', '$*', '$racc_reduce', '$sprintf', '$token_to_str', '$print', '$racc_token2str', '$puts', '$racc_print_stacks', '$empty?', '$each', '$racc_print_states', '$each_index']);
+  Opal.add_stubs('[],class,<,size,[]=,-,__send__,_racc_setup,raise,_racc_init_sysvars,catch,!=,next_token,racc_read_token,+,==,>=,_racc_evalact,!,>,push,racc_shift,-@,_racc_do_reduce,===,racc_accept,throw,on_error,<=,pop,racc_e_pop,inspect,racc_next_state,*,racc_reduce,sprintf,token_to_str,print,racc_token2str,puts,racc_print_stacks,empty?,each,racc_print_states,each_index');
   
   (function($base, $parent_nesting) {
     var self = $module($base, 'Racc');
 
-    var $nesting = [self].concat($parent_nesting);
-
-    return (function($base, $super, $parent_nesting) {
-      var self = $klass($base, $super, 'ParseError');
-
-      var $nesting = [self].concat($parent_nesting);
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return nil
-    })($nesting[0], $$($nesting, 'StandardError'), $nesting)
+    return ($klass($nesting[0], $$('StandardError'), 'ParseError'), nil)
   })($nesting[0], $nesting);
-  if ($truthy((($a = $$$('::', 'ParseError', 'skip_raise')) ? 'constant' : nil))) {
-  } else {
-    Opal.const_set($nesting[0], 'ParseError', $$$($$($nesting, 'Racc'), 'ParseError'))
+  if (!$truthy((($a = $$$('::', 'ParseError', 'skip_raise')) ? 'constant' : nil))) {
+    $const_set($nesting[0], 'ParseError', $$$($$('Racc'), 'ParseError'))
   };
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Racc');
 
-    var $nesting = [self].concat($parent_nesting), $a;
+    var $a, $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
-    if ($truthy((($a = $$($nesting, 'Racc_No_Extensions', 'skip_raise')) ? 'constant' : nil))) {
-    } else {
-      Opal.const_set($nesting[0], 'Racc_No_Extensions', false)
+    if (!$truthy((($a = $$('Racc_No_Extensions', 'skip_raise')) ? 'constant' : nil))) {
+      $const_set($nesting[0], 'Racc_No_Extensions', false)
     };
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Parser');
 
-      var $nesting = [self].concat($parent_nesting), $Parser_racc_runtime_type$1, $Parser__racc_setup$2, $Parser__racc_init_sysvars$3, $Parser_do_parse$4, $Parser_next_token$5, $Parser__racc_do_parse_rb$6, $Parser_yyparse$8, $Parser__racc_yyparse_rb$9, $Parser__racc_evalact$12, $Parser__racc_do_reduce$14, $Parser_on_error$15, $Parser_yyerror$16, $Parser_yyaccept$17, $Parser_yyerrok$18, $Parser_racc_read_token$19, $Parser_racc_shift$20, $Parser_racc_reduce$21, $Parser_racc_accept$23, $Parser_racc_e_pop$24, $Parser_racc_next_state$25, $Parser_racc_print_stacks$26, $Parser_racc_print_states$28, $Parser_racc_token2str$30, $Parser_token_to_str$31;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.yydebug = self.$$prototype.racc_debug_out = self.$$prototype.racc_error_status = self.$$prototype.racc_t = self.$$prototype.racc_vstack = self.$$prototype.racc_val = self.$$prototype.racc_state = self.$$prototype.racc_tstack = nil;
+      $proto.yydebug = $proto.racc_debug_out = $proto.racc_error_status = $proto.racc_t = $proto.racc_vstack = $proto.racc_val = $proto.racc_state = $proto.racc_tstack = nil;
       
-      Opal.const_set($nesting[0], 'Racc_Runtime_Version', "1.4.6");
-      Opal.const_set($nesting[0], 'Racc_Runtime_Revision', ["originalRevision:", "1.8"]['$[]'](1));
-      Opal.const_set($nesting[0], 'Racc_Runtime_Core_Version_R', "1.4.6");
-      Opal.const_set($nesting[0], 'Racc_Runtime_Core_Revision_R', ["originalRevision:", "1.8"]['$[]'](1));
-      Opal.const_set($nesting[0], 'Racc_Main_Parsing_Routine', "_racc_do_parse_rb");
-      Opal.const_set($nesting[0], 'Racc_YY_Parse_Method', "_racc_yyparse_rb");
-      Opal.const_set($nesting[0], 'Racc_Runtime_Core_Version', $$($nesting, 'Racc_Runtime_Core_Version_R'));
-      Opal.const_set($nesting[0], 'Racc_Runtime_Core_Revision', $$($nesting, 'Racc_Runtime_Core_Revision_R'));
-      Opal.const_set($nesting[0], 'Racc_Runtime_Type', "ruby");
-      Opal.defs($$($nesting, 'Parser'), '$racc_runtime_type', $Parser_racc_runtime_type$1 = function $$racc_runtime_type() {
-        var self = this;
-
-        return $$($nesting, 'Racc_Runtime_Type')
-      }, $Parser_racc_runtime_type$1.$$arity = 0);
+      $const_set($nesting[0], 'Racc_Runtime_Version', "1.4.6");
+      $const_set($nesting[0], 'Racc_Runtime_Revision', ["originalRevision:", "1.8"]['$[]'](1));
+      $const_set($nesting[0], 'Racc_Runtime_Core_Version_R', "1.4.6");
+      $const_set($nesting[0], 'Racc_Runtime_Core_Revision_R', ["originalRevision:", "1.8"]['$[]'](1));
+      $const_set($nesting[0], 'Racc_Main_Parsing_Routine', "_racc_do_parse_rb");
+      $const_set($nesting[0], 'Racc_YY_Parse_Method', "_racc_yyparse_rb");
+      $const_set($nesting[0], 'Racc_Runtime_Core_Version', $$('Racc_Runtime_Core_Version_R'));
+      $const_set($nesting[0], 'Racc_Runtime_Core_Revision', $$('Racc_Runtime_Core_Revision_R'));
+      $const_set($nesting[0], 'Racc_Runtime_Type', "ruby");
+      $defs($$('Parser'), '$racc_runtime_type', function $$racc_runtime_type() {
+        
+        return $$('Racc_Runtime_Type')
+      }, 0);
       
-      Opal.def(self, '$_racc_setup', $Parser__racc_setup$2 = function $$_racc_setup() {
+      $def(self, '$_racc_setup', function $$_racc_setup() {
         var $a, $b, self = this, $ret_or_1 = nil, arg = nil, $writer = nil;
         if ($gvars.stderr == null) $gvars.stderr = nil;
 
         
-        if ($truthy($$$(self.$class(), 'Racc_debug_parser'))) {
-        } else {
+        if (!$truthy($$$(self.$class(), 'Racc_debug_parser'))) {
           self.yydebug = false
         };
-        if ($truthy((($a = self['yydebug'], $a != null && $a !== nil) ? 'instance-variable' : nil))) {
-        } else {
+        if (!$truthy((($a = self['yydebug'], $a != null && $a !== nil) ? 'instance-variable' : nil))) {
           self.yydebug = false
         };
         if ($truthy(self.yydebug)) {
           
-          if ($truthy((($b = self['racc_debug_out'], $b != null && $b !== nil) ? 'instance-variable' : nil))) {
-          } else {
+          if (!$truthy((($b = self['racc_debug_out'], $b != null && $b !== nil) ? 'instance-variable' : nil))) {
             self.racc_debug_out = $gvars.stderr
           };
-          self.racc_debug_out = (function() {if ($truthy(($ret_or_1 = self.racc_debug_out))) {
-            return $ret_or_1
-          } else {
-            return $gvars.stderr
-          }; return nil; })();};
+          self.racc_debug_out = ($truthy(($ret_or_1 = self.racc_debug_out)) ? ($ret_or_1) : ($gvars.stderr));
+        };
         arg = $$$(self.$class(), 'Racc_arg');
         if ($truthy($rb_lt(arg.$size(), 14))) {
           
           $writer = [13, true];
-          $send(arg, '[]=', Opal.to_a($writer));
-          $writer[$rb_minus($writer["length"], 1)];};
+          $send(arg, '[]=', $to_a($writer));
+          $writer[$rb_minus($writer["length"], 1)];
+        };
         return arg;
-      }, $Parser__racc_setup$2.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$_racc_init_sysvars', $Parser__racc_init_sysvars$3 = function $$_racc_init_sysvars() {
+      $def(self, '$_racc_init_sysvars', function $$_racc_init_sysvars() {
         var self = this;
 
         
@@ -2248,28 +2059,28 @@ Opal.modules["racc/parser"] = function(Opal) {
         self.racc_read_next = true;
         self.racc_user_yyerror = false;
         return (self.racc_error_status = 0);
-      }, $Parser__racc_init_sysvars$3.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$do_parse', $Parser_do_parse$4 = function $$do_parse() {
+      $def(self, '$do_parse', function $$do_parse() {
         var self = this;
 
-        return self.$__send__($$($nesting, 'Racc_Main_Parsing_Routine'), self.$_racc_setup(), false)
-      }, $Parser_do_parse$4.$$arity = 0);
+        return self.$__send__($$('Racc_Main_Parsing_Routine'), self.$_racc_setup(), false)
+      }, 0);
       
-      Opal.def(self, '$next_token', $Parser_next_token$5 = function $$next_token() {
+      $def(self, '$next_token', function $$next_token() {
         var self = this;
 
-        return self.$raise($$($nesting, 'NotImplementedError'), "" + (self.$class()) + "#next_token is not defined")
-      }, $Parser_next_token$5.$$arity = 0);
+        return self.$raise($$('NotImplementedError'), "" + (self.$class()) + "#next_token is not defined")
+      }, 0);
       
-      Opal.def(self, '$_racc_do_parse_rb', $Parser__racc_do_parse_rb$6 = function $$_racc_do_parse_rb(arg, in_debug) {
-        var $a, $b, $$7, self = this, action_table = nil, action_check = nil, action_default = nil, action_pointer = nil, _ = nil, token_table = nil, tok = nil, act = nil, i = nil;
+      $def(self, '$_racc_do_parse_rb', function $$_racc_do_parse_rb(arg, in_debug) {
+        var $a, $b, self = this, action_table = nil, action_check = nil, action_default = nil, action_pointer = nil, _ = nil, token_table = nil, tok = nil, act = nil, i = nil;
 
         
-        $b = arg, $a = Opal.to_ary($b), (action_table = ($a[0] == null ? nil : $a[0])), (action_check = ($a[1] == null ? nil : $a[1])), (action_default = ($a[2] == null ? nil : $a[2])), (action_pointer = ($a[3] == null ? nil : $a[3])), (_ = ($a[4] == null ? nil : $a[4])), (_ = ($a[5] == null ? nil : $a[5])), (_ = ($a[6] == null ? nil : $a[6])), (_ = ($a[7] == null ? nil : $a[7])), (_ = ($a[8] == null ? nil : $a[8])), (_ = ($a[9] == null ? nil : $a[9])), (token_table = ($a[10] == null ? nil : $a[10])), (_ = ($a[11] == null ? nil : $a[11])), (_ = ($a[12] == null ? nil : $a[12])), (_ = ($a[13] == null ? nil : $a[13])), $b;
+        $b = arg, $a = $to_ary($b), (action_table = ($a[0] == null ? nil : $a[0])), (action_check = ($a[1] == null ? nil : $a[1])), (action_default = ($a[2] == null ? nil : $a[2])), (action_pointer = ($a[3] == null ? nil : $a[3])), (_ = ($a[4] == null ? nil : $a[4])), (_ = ($a[5] == null ? nil : $a[5])), (_ = ($a[6] == null ? nil : $a[6])), (_ = ($a[7] == null ? nil : $a[7])), (_ = ($a[8] == null ? nil : $a[8])), (_ = ($a[9] == null ? nil : $a[9])), (token_table = ($a[10] == null ? nil : $a[10])), (_ = ($a[11] == null ? nil : $a[11])), (_ = ($a[12] == null ? nil : $a[12])), (_ = ($a[13] == null ? nil : $a[13])), $b;
         self.$_racc_init_sysvars();
         tok = (act = (i = nil));
-        return $send(self, 'catch', ["racc_end_parse"], ($$7 = function(){var self = $$7.$$s == null ? this : $$7.$$s, $c, $d, $e, $ret_or_2 = nil, $ret_or_3 = nil, $ret_or_4 = nil;
+        return $send(self, 'catch', ["racc_end_parse"], function $$1(){var $c, $d, $e, self = $$1.$$s == null ? this : $$1.$$s, $ret_or_1 = nil;
           if (self.racc_state == null) self.racc_state = nil;
           if (self.racc_read_next == null) self.racc_read_next = nil;
           if (self.racc_t == null) self.racc_t = nil;
@@ -2281,32 +2092,22 @@ Opal.modules["racc/parser"] = function(Opal) {
             if ($truthy((i = action_pointer['$[]'](self.racc_state['$[]'](-1))))) {
               
               if ($truthy(self.racc_read_next)) {
-                if ($truthy(self.racc_t['$!='](0))) {
+                if ($neqeq(self.racc_t, 0)) {
                   
-                  $e = self.$next_token(), $d = Opal.to_ary($e), (tok = ($d[0] == null ? nil : $d[0])), (self.racc_val = ($d[1] == null ? nil : $d[1])), $e;
+                  $e = self.$next_token(), $d = $to_ary($e), (tok = ($d[0] == null ? nil : $d[0])), (self.racc_val = ($d[1] == null ? nil : $d[1])), $e;
                   if ($truthy(tok)) {
-                    self.racc_t = (function() {if ($truthy(($ret_or_2 = token_table['$[]'](tok)))) {
-                      return $ret_or_2
-                    } else {
-                      return 1
-                    }; return nil; })()
+                    self.racc_t = ($truthy(($ret_or_1 = token_table['$[]'](tok))) ? ($ret_or_1) : (1))
                   } else {
                     self.racc_t = 0
                   };
                   if ($truthy(self.yydebug)) {
-                    self.$racc_read_token(self.racc_t, tok, self.racc_val)};
-                  self.racc_read_next = false;}};
+                    self.$racc_read_token(self.racc_t, tok, self.racc_val)
+                  };
+                  self.racc_read_next = false;
+                }
+              };
               i = $rb_plus(i, self.racc_t);
-              if ($truthy((function() {if ($truthy(($ret_or_3 = (function() {if ($truthy(($ret_or_4 = $rb_ge(i, 0)))) {
-                return (act = action_table['$[]'](i))
-              } else {
-                return $ret_or_4
-              }; return nil; })()))) {
-                return action_check['$[]'](i)['$=='](self.racc_state['$[]'](-1))
-              } else {
-                return $ret_or_3
-              }; return nil; })())) {
-              } else {
+              if (!(($truthy($rb_ge(i, 0)) && ($truthy((act = action_table['$[]'](i))))) && ($eqeq(action_check['$[]'](i), self.racc_state['$[]'](-1))))) {
                 act = action_default['$[]'](self.racc_state['$[]'](-1))
               };
             } else {
@@ -2315,24 +2116,24 @@ Opal.modules["racc/parser"] = function(Opal) {
             while ($truthy((act = self.$_racc_evalact(act, arg)))) {
               
             };
-          }}, $$7.$$s = self, $$7.$$arity = 0, $$7));
-      }, $Parser__racc_do_parse_rb$6.$$arity = 2);
+          }}, {$$arity: 0, $$s: self});
+      }, 2);
       
-      Opal.def(self, '$yyparse', $Parser_yyparse$8 = function $$yyparse(recv, mid) {
+      $def(self, '$yyparse', function $$yyparse(recv, mid) {
         var self = this;
 
-        return self.$__send__($$($nesting, 'Racc_YY_Parse_Method'), recv, mid, self.$_racc_setup(), true)
-      }, $Parser_yyparse$8.$$arity = 2);
+        return self.$__send__($$('Racc_YY_Parse_Method'), recv, mid, self.$_racc_setup(), true)
+      }, 2);
       
-      Opal.def(self, '$_racc_yyparse_rb', $Parser__racc_yyparse_rb$9 = function $$_racc_yyparse_rb(recv, mid, arg, c_debug) {
-        var $a, $b, $$10, self = this, action_table = nil, action_check = nil, action_default = nil, action_pointer = nil, _ = nil, token_table = nil, act = nil, i = nil;
+      $def(self, '$_racc_yyparse_rb', function $$_racc_yyparse_rb(recv, mid, arg, c_debug) {
+        var $a, $b, self = this, action_table = nil, action_check = nil, action_default = nil, action_pointer = nil, _ = nil, token_table = nil, act = nil, i = nil;
 
         
-        $b = arg, $a = Opal.to_ary($b), (action_table = ($a[0] == null ? nil : $a[0])), (action_check = ($a[1] == null ? nil : $a[1])), (action_default = ($a[2] == null ? nil : $a[2])), (action_pointer = ($a[3] == null ? nil : $a[3])), (_ = ($a[4] == null ? nil : $a[4])), (_ = ($a[5] == null ? nil : $a[5])), (_ = ($a[6] == null ? nil : $a[6])), (_ = ($a[7] == null ? nil : $a[7])), (_ = ($a[8] == null ? nil : $a[8])), (_ = ($a[9] == null ? nil : $a[9])), (token_table = ($a[10] == null ? nil : $a[10])), (_ = ($a[11] == null ? nil : $a[11])), (_ = ($a[12] == null ? nil : $a[12])), (_ = ($a[13] == null ? nil : $a[13])), $b;
+        $b = arg, $a = $to_ary($b), (action_table = ($a[0] == null ? nil : $a[0])), (action_check = ($a[1] == null ? nil : $a[1])), (action_default = ($a[2] == null ? nil : $a[2])), (action_pointer = ($a[3] == null ? nil : $a[3])), (_ = ($a[4] == null ? nil : $a[4])), (_ = ($a[5] == null ? nil : $a[5])), (_ = ($a[6] == null ? nil : $a[6])), (_ = ($a[7] == null ? nil : $a[7])), (_ = ($a[8] == null ? nil : $a[8])), (_ = ($a[9] == null ? nil : $a[9])), (token_table = ($a[10] == null ? nil : $a[10])), (_ = ($a[11] == null ? nil : $a[11])), (_ = ($a[12] == null ? nil : $a[12])), (_ = ($a[13] == null ? nil : $a[13])), $b;
         self.$_racc_init_sysvars();
         act = nil;
         i = nil;
-        return $send(self, 'catch', ["racc_end_parse"], ($$10 = function(){var self = $$10.$$s == null ? this : $$10.$$s, $c, $d, $$11;
+        return $send(self, 'catch', ["racc_end_parse"], function $$2(){var $c, $d, self = $$2.$$s == null ? this : $$2.$$s;
           if (self.racc_state == null) self.racc_state = nil;
 
           
@@ -2341,141 +2142,101 @@ Opal.modules["racc/parser"] = function(Opal) {
               
             }
           };
-          return $send(recv, '__send__', [mid], ($$11 = function(tok, val){var self = $$11.$$s == null ? this : $$11.$$s, $e, $f, $ret_or_5 = nil, $ret_or_6 = nil, $ret_or_7 = nil, $ret_or_8 = nil, $ret_or_9 = nil, $ret_or_10 = nil, $ret_or_11 = nil, $ret_or_12 = nil, $ret_or_13 = nil;
+          return $send(recv, '__send__', [mid], function $$3(tok, val){var $e, $f, self = $$3.$$s == null ? this : $$3.$$s, $ret_or_1 = nil, $ret_or_2 = nil;
             if (self.racc_t == null) self.racc_t = nil;
             if (self.racc_state == null) self.racc_state = nil;
             if (self.racc_read_next == null) self.racc_read_next = nil;
 
             
             
-            if (tok == null) {
-              tok = nil;
-            };
+            if (tok == null) tok = nil;;
             
-            if (val == null) {
-              val = nil;
-            };
+            if (val == null) val = nil;;
             if ($truthy(tok)) {
-              self.racc_t = (function() {if ($truthy(($ret_or_5 = token_table['$[]'](tok)))) {
-                return $ret_or_5
-              } else {
-                return 1
-              }; return nil; })()
+              self.racc_t = ($truthy(($ret_or_1 = token_table['$[]'](tok))) ? ($ret_or_1) : (1))
             } else {
               self.racc_t = 0
             };
             self.racc_val = val;
             self.racc_read_next = false;
             i = $rb_plus(i, self.racc_t);
-            if ($truthy((function() {if ($truthy(($ret_or_6 = (function() {if ($truthy(($ret_or_7 = $rb_ge(i, 0)))) {
-              return (act = action_table['$[]'](i))
-            } else {
-              return $ret_or_7
-            }; return nil; })()))) {
-              return action_check['$[]'](i)['$=='](self.racc_state['$[]'](-1))
-            } else {
-              return $ret_or_6
-            }; return nil; })())) {
-            } else {
+            if (!(($truthy($rb_ge(i, 0)) && ($truthy((act = action_table['$[]'](i))))) && ($eqeq(action_check['$[]'](i), self.racc_state['$[]'](-1))))) {
               act = action_default['$[]'](self.racc_state['$[]'](-1))
             };
             while ($truthy((act = self.$_racc_evalact(act, arg)))) {
               
             };
-            while ($truthy((function() {if ($truthy(($ret_or_8 = (function() {if ($truthy(($ret_or_9 = (i = action_pointer['$[]'](self.racc_state['$[]'](-1)))['$!']()))) {
-              return $ret_or_9
-            } else {
-              return self.racc_read_next['$!']()
-            }; return nil; })()))) {
-              return $ret_or_8
-            } else {
-              return self.racc_t['$=='](0)
-            }; return nil; })())) {
+            while ($truthy(($truthy(($ret_or_1 = ($truthy(($ret_or_2 = (i = action_pointer['$[]'](self.racc_state['$[]'](-1)))['$!']())) ? ($ret_or_2) : (self.racc_read_next['$!']())))) ? ($ret_or_1) : (self.racc_t['$=='](0))))) {
               
-              if ($truthy((function() {if ($truthy(($ret_or_10 = (function() {if ($truthy(($ret_or_11 = (function() {if ($truthy(($ret_or_12 = (function() {if ($truthy(($ret_or_13 = i))) {
-                return (i = $rb_plus(i, self.racc_t))
-              } else {
-                return $ret_or_13
-              }; return nil; })()))) {
-                return $rb_ge(i, 0)
-              } else {
-                return $ret_or_12
-              }; return nil; })()))) {
-                return (act = action_table['$[]'](i))
-              } else {
-                return $ret_or_11
-              }; return nil; })()))) {
-                return action_check['$[]'](i)['$=='](self.racc_state['$[]'](-1))
-              } else {
-                return $ret_or_10
-              }; return nil; })())) {
-              } else {
+              if (!(((($truthy(i) && ($truthy((i = $rb_plus(i, self.racc_t))))) && ($truthy($rb_ge(i, 0)))) && ($truthy((act = action_table['$[]'](i))))) && ($eqeq(action_check['$[]'](i), self.racc_state['$[]'](-1))))) {
                 act = action_default['$[]'](self.racc_state['$[]'](-1))
               };
               while ($truthy((act = self.$_racc_evalact(act, arg)))) {
                 
               };
-            };}, $$11.$$s = self, $$11.$$arity = 2, $$11));}, $$10.$$s = self, $$10.$$arity = 0, $$10));
-      }, $Parser__racc_yyparse_rb$9.$$arity = 4);
+            };}, {$$arity: 2, $$s: self});}, {$$arity: 0, $$s: self});
+      }, 4);
       
-      Opal.def(self, '$_racc_evalact', $Parser__racc_evalact$12 = function $$_racc_evalact(act, arg) {
-        var $a, $b, $$13, self = this, action_table = nil, action_check = nil, _ = nil, action_pointer = nil, shift_n = nil, reduce_n = nil, $ret_or_14 = nil, $ret_or_15 = nil, code = nil, $case = nil, i = nil, $ret_or_16 = nil, $ret_or_17 = nil;
+      $def(self, '$_racc_evalact', function $$_racc_evalact(act, arg) {
+        var $a, $b, self = this, action_table = nil, action_check = nil, _ = nil, action_pointer = nil, shift_n = nil, reduce_n = nil, code = nil, $ret_or_1 = nil, i = nil;
 
         
-        $b = arg, $a = Opal.to_ary($b), (action_table = ($a[0] == null ? nil : $a[0])), (action_check = ($a[1] == null ? nil : $a[1])), (_ = ($a[2] == null ? nil : $a[2])), (action_pointer = ($a[3] == null ? nil : $a[3])), (_ = ($a[4] == null ? nil : $a[4])), (_ = ($a[5] == null ? nil : $a[5])), (_ = ($a[6] == null ? nil : $a[6])), (_ = ($a[7] == null ? nil : $a[7])), (_ = ($a[8] == null ? nil : $a[8])), (_ = ($a[9] == null ? nil : $a[9])), (_ = ($a[10] == null ? nil : $a[10])), (shift_n = ($a[11] == null ? nil : $a[11])), (reduce_n = ($a[12] == null ? nil : $a[12])), (_ = ($a[13] == null ? nil : $a[13])), (_ = ($a[14] == null ? nil : $a[14])), $b;
-        if ($truthy((function() {if ($truthy(($ret_or_14 = $rb_gt(act, 0)))) {
-          return $rb_lt(act, shift_n)
-        } else {
-          return $ret_or_14
-        }; return nil; })())) {
+        $b = arg, $a = $to_ary($b), (action_table = ($a[0] == null ? nil : $a[0])), (action_check = ($a[1] == null ? nil : $a[1])), (_ = ($a[2] == null ? nil : $a[2])), (action_pointer = ($a[3] == null ? nil : $a[3])), (_ = ($a[4] == null ? nil : $a[4])), (_ = ($a[5] == null ? nil : $a[5])), (_ = ($a[6] == null ? nil : $a[6])), (_ = ($a[7] == null ? nil : $a[7])), (_ = ($a[8] == null ? nil : $a[8])), (_ = ($a[9] == null ? nil : $a[9])), (_ = ($a[10] == null ? nil : $a[10])), (shift_n = ($a[11] == null ? nil : $a[11])), (reduce_n = ($a[12] == null ? nil : $a[12])), (_ = ($a[13] == null ? nil : $a[13])), (_ = ($a[14] == null ? nil : $a[14])), $b;
+        if (($truthy($rb_gt(act, 0)) && ($truthy($rb_lt(act, shift_n))))) {
           
           if ($truthy($rb_gt(self.racc_error_status, 0))) {
-            if (self.racc_t['$=='](1)) {
-            } else {
+            if (!$eqeq(self.racc_t, 1)) {
               self.racc_error_status = $rb_minus(self.racc_error_status, 1)
-            }};
+            }
+          };
           self.racc_vstack.$push(self.racc_val);
           self.racc_state.$push(act);
           self.racc_read_next = true;
           if ($truthy(self.yydebug)) {
             
             self.racc_tstack.$push(self.racc_t);
-            self.$racc_shift(self.racc_t, self.racc_tstack, self.racc_vstack);};
-        } else if ($truthy((function() {if ($truthy(($ret_or_15 = $rb_lt(act, 0)))) {
-          return $rb_gt(act, reduce_n['$-@']())
-        } else {
-          return $ret_or_15
-        }; return nil; })())) {
+            self.$racc_shift(self.racc_t, self.racc_tstack, self.racc_vstack);
+          };
+        } else if (($truthy($rb_lt(act, 0)) && ($truthy($rb_gt(act, reduce_n['$-@']()))))) {
           
-          code = $send(self, 'catch', ["racc_jump"], ($$13 = function(){var self = $$13.$$s == null ? this : $$13.$$s;
+          code = $send(self, 'catch', ["racc_jump"], function $$4(){var self = $$4.$$s == null ? this : $$4.$$s;
             if (self.racc_state == null) self.racc_state = nil;
 
             
             self.racc_state.$push(self.$_racc_do_reduce(arg, act));
-            return false;}, $$13.$$s = self, $$13.$$arity = 0, $$13));
+            return false;}, {$$arity: 0, $$s: self});
           if ($truthy(code)) {
-            $case = code;
-            if ((1)['$===']($case)) {
-            self.racc_user_yyerror = true;
-            return reduce_n['$-@']();}
-            else if ((2)['$===']($case)) {return shift_n}
-            else {self.$raise("[Racc Bug] unknown jump code")}};
-        } else if (act['$=='](shift_n)) {
-          
-          if ($truthy(self.yydebug)) {
-            self.$racc_accept()};
+            if ($eqeqeq(1, ($ret_or_1 = code))) {
+              
+              self.racc_user_yyerror = true;
+              return reduce_n['$-@']();
+            } else if ($eqeqeq(2, $ret_or_1)) {
+              return shift_n
+            } else {
+              self.$raise("[Racc Bug] unknown jump code")
+            }
+          };
+        } else if ($eqeq(act, shift_n)) {
+          
+          if ($truthy(self.yydebug)) {
+            self.$racc_accept()
+          };
           self.$throw("racc_end_parse", self.racc_vstack['$[]'](0));
-        } else if (act['$=='](reduce_n['$-@']())) {
+        } else if ($eqeq(act, reduce_n['$-@']())) {
           
-          $case = self.racc_error_status;
-          if ((0)['$===']($case)) {if ($truthy(arg['$[]'](21))) {
+          if ($eqeqeq(0, ($ret_or_1 = self.racc_error_status))) {
+            if (!$truthy(arg['$[]'](21))) {
+              self.$on_error(self.racc_t, self.racc_val, self.racc_vstack)
+            }
+          } else if ($eqeqeq(3, $ret_or_1)) {
+            
+            if ($eqeq(self.racc_t, 0)) {
+              self.$throw("racc_end_parse", nil)
+            };
+            self.racc_read_next = true;
           } else {
-            self.$on_error(self.racc_t, self.racc_val, self.racc_vstack)
-          }}
-          else if ((3)['$===']($case)) {
-          if (self.racc_t['$=='](0)) {
-            self.$throw("racc_end_parse", nil)};
-          self.racc_read_next = true;};
+            nil
+          };
           self.racc_user_yyerror = false;
           self.racc_error_status = 3;
           while ($truthy(true)) {
@@ -2483,40 +2244,36 @@ Opal.modules["racc/parser"] = function(Opal) {
             if ($truthy((i = action_pointer['$[]'](self.racc_state['$[]'](-1))))) {
               
               i = $rb_plus(i, 1);
-              if ($truthy((function() {if ($truthy(($ret_or_16 = (function() {if ($truthy(($ret_or_17 = $rb_ge(i, 0)))) {
-                
-                return (act = action_table['$[]'](i));
-              } else {
-                return $ret_or_17
-              }; return nil; })()))) {
-                return action_check['$[]'](i)['$=='](self.racc_state['$[]'](-1))
-              } else {
-                return $ret_or_16
-              }; return nil; })())) {
-                break;};};
+              if ((($truthy($rb_ge(i, 0)) && ($truthy((act = action_table['$[]'](i))))) && ($eqeq(action_check['$[]'](i), self.racc_state['$[]'](-1))))) {
+                break;
+              };
+            };
             if ($truthy($rb_le(self.racc_state.$size(), 1))) {
-              self.$throw("racc_end_parse", nil)};
+              self.$throw("racc_end_parse", nil)
+            };
             self.racc_state.$pop();
             self.racc_vstack.$pop();
             if ($truthy(self.yydebug)) {
               
               self.racc_tstack.$pop();
-              self.$racc_e_pop(self.racc_state, self.racc_tstack, self.racc_vstack);};
+              self.$racc_e_pop(self.racc_state, self.racc_tstack, self.racc_vstack);
+            };
           };
           return act;
         } else {
-          self.$raise("" + "[Racc Bug] unknown action " + (act.$inspect()))
+          self.$raise("[Racc Bug] unknown action " + (act.$inspect()))
         };
         if ($truthy(self.yydebug)) {
-          self.$racc_next_state(self.racc_state['$[]'](-1), self.racc_state)};
+          self.$racc_next_state(self.racc_state['$[]'](-1), self.racc_state)
+        };
         return nil;
-      }, $Parser__racc_evalact$12.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$_racc_do_reduce', $Parser__racc_do_reduce$14 = function $$_racc_do_reduce(arg, act) {
-        var $a, $b, self = this, _ = nil, goto_table = nil, goto_check = nil, goto_default = nil, goto_pointer = nil, nt_base = nil, reduce_table = nil, use_result = nil, state = nil, vstack = nil, tstack = nil, i = nil, len = nil, reduce_to = nil, method_id = nil, void_array = nil, tmp_t = nil, tmp_v = nil, $writer = nil, k1 = nil, $ret_or_18 = nil, $ret_or_19 = nil, curstate = nil;
+      $def(self, '$_racc_do_reduce', function $$_racc_do_reduce(arg, act) {
+        var $a, $b, self = this, _ = nil, goto_table = nil, goto_check = nil, goto_default = nil, goto_pointer = nil, nt_base = nil, reduce_table = nil, use_result = nil, state = nil, vstack = nil, tstack = nil, i = nil, len = nil, reduce_to = nil, method_id = nil, void_array = nil, tmp_t = nil, tmp_v = nil, $writer = nil, k1 = nil, curstate = nil;
 
         
-        $b = arg, $a = Opal.to_ary($b), (_ = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), (_ = ($a[2] == null ? nil : $a[2])), (_ = ($a[3] == null ? nil : $a[3])), (goto_table = ($a[4] == null ? nil : $a[4])), (goto_check = ($a[5] == null ? nil : $a[5])), (goto_default = ($a[6] == null ? nil : $a[6])), (goto_pointer = ($a[7] == null ? nil : $a[7])), (nt_base = ($a[8] == null ? nil : $a[8])), (reduce_table = ($a[9] == null ? nil : $a[9])), (_ = ($a[10] == null ? nil : $a[10])), (_ = ($a[11] == null ? nil : $a[11])), (_ = ($a[12] == null ? nil : $a[12])), (use_result = ($a[13] == null ? nil : $a[13])), $b;
+        $b = arg, $a = $to_ary($b), (_ = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), (_ = ($a[2] == null ? nil : $a[2])), (_ = ($a[3] == null ? nil : $a[3])), (goto_table = ($a[4] == null ? nil : $a[4])), (goto_check = ($a[5] == null ? nil : $a[5])), (goto_default = ($a[6] == null ? nil : $a[6])), (goto_pointer = ($a[7] == null ? nil : $a[7])), (nt_base = ($a[8] == null ? nil : $a[8])), (reduce_table = ($a[9] == null ? nil : $a[9])), (_ = ($a[10] == null ? nil : $a[10])), (_ = ($a[11] == null ? nil : $a[11])), (_ = ($a[12] == null ? nil : $a[12])), (use_result = ($a[13] == null ? nil : $a[13])), $b;
         state = self.racc_state;
         vstack = self.racc_vstack;
         tstack = self.racc_tstack;
@@ -2526,20 +2283,22 @@ Opal.modules["racc/parser"] = function(Opal) {
         method_id = reduce_table['$[]']($rb_plus(i, 2));
         void_array = [];
         if ($truthy(self.yydebug)) {
-          tmp_t = tstack['$[]'](len['$-@'](), len)};
+          tmp_t = tstack['$[]'](len['$-@'](), len)
+        };
         tmp_v = vstack['$[]'](len['$-@'](), len);
         if ($truthy(self.yydebug)) {
           
           $writer = [len['$-@'](), len, void_array];
-          $send(tstack, '[]=', Opal.to_a($writer));
-          $writer[$rb_minus($writer["length"], 1)];};
+          $send(tstack, '[]=', $to_a($writer));
+          $writer[$rb_minus($writer["length"], 1)];
+        };
         
         $writer = [len['$-@'](), len, void_array];
-        $send(vstack, '[]=', Opal.to_a($writer));
+        $send(vstack, '[]=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         
         $writer = [len['$-@'](), len, void_array];
-        $send(state, '[]=', Opal.to_a($writer));
+        $send(state, '[]=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         if ($truthy(use_result)) {
           vstack.$push(self.$__send__(method_id, tmp_v, vstack, tmp_v['$[]'](0)))
@@ -2548,54 +2307,44 @@ Opal.modules["racc/parser"] = function(Opal) {
         };
         tstack.$push(reduce_to);
         if ($truthy(self.yydebug)) {
-          self.$racc_reduce(tmp_t, reduce_to, tstack, vstack)};
+          self.$racc_reduce(tmp_t, reduce_to, tstack, vstack)
+        };
         k1 = $rb_minus(reduce_to, nt_base);
         if ($truthy((i = goto_pointer['$[]'](k1)))) {
           
           i = $rb_plus(i, state['$[]'](-1));
-          if ($truthy((function() {if ($truthy(($ret_or_18 = (function() {if ($truthy(($ret_or_19 = $rb_ge(i, 0)))) {
-            
-            return (curstate = goto_table['$[]'](i));
-          } else {
-            return $ret_or_19
-          }; return nil; })()))) {
-            return goto_check['$[]'](i)['$=='](k1)
-          } else {
-            return $ret_or_18
-          }; return nil; })())) {
-            return curstate};};
+          if ((($truthy($rb_ge(i, 0)) && ($truthy((curstate = goto_table['$[]'](i))))) && ($eqeq(goto_check['$[]'](i), k1)))) {
+            return curstate
+          };
+        };
         return goto_default['$[]'](k1);
-      }, $Parser__racc_do_reduce$14.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$on_error', $Parser_on_error$15 = function $$on_error(t, val, vstack) {
-        var self = this, $ret_or_20 = nil;
+      $def(self, '$on_error', function $$on_error(t, val, vstack) {
+        var self = this, $ret_or_1 = nil;
 
-        return self.$raise($$($nesting, 'ParseError'), self.$sprintf("\nparse error on value %s (%s)", val.$inspect(), (function() {if ($truthy(($ret_or_20 = self.$token_to_str(t)))) {
-          return $ret_or_20
-        } else {
-          return "?"
-        }; return nil; })()))
-      }, $Parser_on_error$15.$$arity = 3);
+        return self.$raise($$('ParseError'), self.$sprintf("\nparse error on value %s (%s)", val.$inspect(), ($truthy(($ret_or_1 = self.$token_to_str(t))) ? ($ret_or_1) : ("?"))))
+      }, 3);
       
-      Opal.def(self, '$yyerror', $Parser_yyerror$16 = function $$yyerror() {
+      $def(self, '$yyerror', function $$yyerror() {
         var self = this;
 
         return self.$throw("racc_jump", 1)
-      }, $Parser_yyerror$16.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$yyaccept', $Parser_yyaccept$17 = function $$yyaccept() {
+      $def(self, '$yyaccept', function $$yyaccept() {
         var self = this;
 
         return self.$throw("racc_jump", 2)
-      }, $Parser_yyaccept$17.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$yyerrok', $Parser_yyerrok$18 = function $$yyerrok() {
+      $def(self, '$yyerrok', function $$yyerrok() {
         var self = this;
 
         return (self.racc_error_status = 0)
-      }, $Parser_yyerrok$18.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$racc_read_token', $Parser_racc_read_token$19 = function $$racc_read_token(t, tok, val) {
+      $def(self, '$racc_read_token', function $$racc_read_token(t, tok, val) {
         var self = this;
 
         
@@ -2603,19 +2352,19 @@ Opal.modules["racc/parser"] = function(Opal) {
         self.racc_debug_out.$print(tok.$inspect(), "(", self.$racc_token2str(t), ") ");
         self.racc_debug_out.$puts(val.$inspect());
         return self.racc_debug_out.$puts();
-      }, $Parser_racc_read_token$19.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$racc_shift', $Parser_racc_shift$20 = function $$racc_shift(tok, tstack, vstack) {
+      $def(self, '$racc_shift', function $$racc_shift(tok, tstack, vstack) {
         var self = this;
 
         
-        self.racc_debug_out.$puts("" + "shift   " + (self.$racc_token2str(tok)));
+        self.racc_debug_out.$puts("shift   " + (self.$racc_token2str(tok)));
         self.$racc_print_stacks(tstack, vstack);
         return self.racc_debug_out.$puts();
-      }, $Parser_racc_shift$20.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$racc_reduce', $Parser_racc_reduce$21 = function $$racc_reduce(toks, sim, tstack, vstack) {
-        var $$22, self = this, out = nil;
+      $def(self, '$racc_reduce', function $$racc_reduce(toks, sim, tstack, vstack) {
+        var self = this, out = nil;
 
         
         out = self.racc_debug_out;
@@ -2623,29 +2372,27 @@ Opal.modules["racc/parser"] = function(Opal) {
         if ($truthy(toks['$empty?']())) {
           out.$print(" <none>")
         } else {
-          $send(toks, 'each', [], ($$22 = function(t){var self = $$22.$$s == null ? this : $$22.$$s;
+          $send(toks, 'each', [], function $$5(t){var self = $$5.$$s == null ? this : $$5.$$s;
 
             
             
-            if (t == null) {
-              t = nil;
-            };
-            return out.$print(" ", self.$racc_token2str(t));}, $$22.$$s = self, $$22.$$arity = 1, $$22))
+            if (t == null) t = nil;;
+            return out.$print(" ", self.$racc_token2str(t));}, {$$arity: 1, $$s: self})
         };
-        out.$puts("" + " --> " + (self.$racc_token2str(sim)));
+        out.$puts(" --> " + (self.$racc_token2str(sim)));
         self.$racc_print_stacks(tstack, vstack);
         return self.racc_debug_out.$puts();
-      }, $Parser_racc_reduce$21.$$arity = 4);
+      }, 4);
       
-      Opal.def(self, '$racc_accept', $Parser_racc_accept$23 = function $$racc_accept() {
+      $def(self, '$racc_accept', function $$racc_accept() {
         var self = this;
 
         
         self.racc_debug_out.$puts("accept");
         return self.racc_debug_out.$puts();
-      }, $Parser_racc_accept$23.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$racc_e_pop', $Parser_racc_e_pop$24 = function $$racc_e_pop(state, tstack, vstack) {
+      $def(self, '$racc_e_pop', function $$racc_e_pop(state, tstack, vstack) {
         var self = this;
 
         
@@ -2653,192 +2400,150 @@ Opal.modules["racc/parser"] = function(Opal) {
         self.$racc_print_states(state);
         self.$racc_print_stacks(tstack, vstack);
         return self.racc_debug_out.$puts();
-      }, $Parser_racc_e_pop$24.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$racc_next_state', $Parser_racc_next_state$25 = function $$racc_next_state(curstate, state) {
+      $def(self, '$racc_next_state', function $$racc_next_state(curstate, state) {
         var self = this;
 
         
-        self.racc_debug_out.$puts("" + "goto    " + (curstate));
+        self.racc_debug_out.$puts("goto    " + (curstate));
         self.$racc_print_states(state);
         return self.racc_debug_out.$puts();
-      }, $Parser_racc_next_state$25.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$racc_print_stacks', $Parser_racc_print_stacks$26 = function $$racc_print_stacks(t, v) {
-        var $$27, self = this, out = nil;
+      $def(self, '$racc_print_stacks', function $$racc_print_stacks(t, v) {
+        var self = this, out = nil;
 
         
         out = self.racc_debug_out;
         out.$print("        [");
-        $send(t, 'each_index', [], ($$27 = function(i){var self = $$27.$$s == null ? this : $$27.$$s;
+        $send(t, 'each_index', [], function $$6(i){var self = $$6.$$s == null ? this : $$6.$$s;
 
           
           
-          if (i == null) {
-            i = nil;
-          };
-          return out.$print(" (", self.$racc_token2str(t['$[]'](i)), " ", v['$[]'](i).$inspect(), ")");}, $$27.$$s = self, $$27.$$arity = 1, $$27));
+          if (i == null) i = nil;;
+          return out.$print(" (", self.$racc_token2str(t['$[]'](i)), " ", v['$[]'](i).$inspect(), ")");}, {$$arity: 1, $$s: self});
         return out.$puts(" ]");
-      }, $Parser_racc_print_stacks$26.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$racc_print_states', $Parser_racc_print_states$28 = function $$racc_print_states(s) {
-        var $$29, self = this, out = nil;
+      $def(self, '$racc_print_states', function $$racc_print_states(s) {
+        var self = this, out = nil;
 
         
         out = self.racc_debug_out;
         out.$print("        [");
-        $send(s, 'each', [], ($$29 = function(st){var self = $$29.$$s == null ? this : $$29.$$s;
-
+        $send(s, 'each', [], function $$7(st){
           
           
-          if (st == null) {
-            st = nil;
-          };
-          return out.$print(" ", st);}, $$29.$$s = self, $$29.$$arity = 1, $$29));
+          if (st == null) st = nil;;
+          return out.$print(" ", st);}, 1);
         return out.$puts(" ]");
-      }, $Parser_racc_print_states$28.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$racc_token2str', $Parser_racc_token2str$30 = function $$racc_token2str(tok) {
-        var self = this, $ret_or_21 = nil;
+      $def(self, '$racc_token2str', function $$racc_token2str(tok) {
+        var self = this, $ret_or_1 = nil;
 
-        if ($truthy(($ret_or_21 = $$$(self.$class(), 'Racc_token_to_s_table')['$[]'](tok)))) {
-          return $ret_or_21
+        if ($truthy(($ret_or_1 = $$$(self.$class(), 'Racc_token_to_s_table')['$[]'](tok)))) {
+          return $ret_or_1
         } else {
-          return self.$raise("" + "[Racc Bug] can't convert token " + (tok) + " to string")
+          return self.$raise("[Racc Bug] can't convert token " + (tok) + " to string")
         }
-      }, $Parser_racc_token2str$30.$$arity = 1);
-      return (Opal.def(self, '$token_to_str', $Parser_token_to_str$31 = function $$token_to_str(t) {
+      }, 1);
+      return $def(self, '$token_to_str', function $$token_to_str(t) {
         var self = this;
 
         return $$$(self.$class(), 'Racc_token_to_s_table')['$[]'](t)
-      }, $Parser_token_to_str$31.$$arity = 1), nil) && 'token_to_str';
+      }, 1);
     })($nesting[0], null, $nesting);
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/version"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module;
+Opal.modules["parser/version"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $const_set = Opal.const_set;
 
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
     var $nesting = [self].concat($parent_nesting);
 
-    return Opal.const_set($nesting[0], 'VERSION', "3.1.1.0")
+    return $const_set($nesting[0], 'VERSION', "3.1.1.0")
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["racc/parser"] = function(Opal) {
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_ge(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs >= rhs : lhs['$>='](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_le(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs <= rhs : lhs['$<='](rhs);
-  }
-  function $rb_times(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs * rhs : lhs['$*'](rhs);
-  }
-  var $a, self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $gvars = Opal.gvars, $send = Opal.send;
+Opal.modules["racc/parser"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $a, $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $const_set = Opal.const_set, $defs = Opal.defs, $gvars = Opal.gvars, $rb_lt = Opal.rb_lt, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $def = Opal.def, $to_ary = Opal.to_ary, $neqeq = Opal.neqeq, $rb_plus = Opal.rb_plus, $eqeq = Opal.eqeq, $rb_ge = Opal.rb_ge, $rb_gt = Opal.rb_gt, $eqeqeq = Opal.eqeqeq, $rb_le = Opal.rb_le, $rb_times = Opal.rb_times;
 
-  Opal.add_stubs(['$[]', '$class', '$<', '$size', '$[]=', '$-', '$__send__', '$_racc_setup', '$raise', '$_racc_init_sysvars', '$catch', '$!=', '$next_token', '$racc_read_token', '$+', '$>=', '$==', '$_racc_evalact', '$!', '$>', '$push', '$racc_shift', '$-@', '$_racc_do_reduce', '$===', '$racc_accept', '$throw', '$on_error', '$<=', '$pop', '$racc_e_pop', '$inspect', '$racc_next_state', '$*', '$racc_reduce', '$sprintf', '$token_to_str', '$print', '$racc_token2str', '$puts', '$racc_print_stacks', '$empty?', '$each', '$racc_print_states', '$each_index']);
+  Opal.add_stubs('[],class,<,size,[]=,-,__send__,_racc_setup,raise,_racc_init_sysvars,catch,!=,next_token,racc_read_token,+,==,>=,_racc_evalact,!,>,push,racc_shift,-@,_racc_do_reduce,===,racc_accept,throw,on_error,<=,pop,racc_e_pop,inspect,racc_next_state,*,racc_reduce,sprintf,token_to_str,print,racc_token2str,puts,racc_print_stacks,empty?,each,racc_print_states,each_index');
   
   (function($base, $parent_nesting) {
     var self = $module($base, 'Racc');
 
-    var $nesting = [self].concat($parent_nesting);
-
-    return (function($base, $super, $parent_nesting) {
-      var self = $klass($base, $super, 'ParseError');
-
-      var $nesting = [self].concat($parent_nesting);
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return nil
-    })($nesting[0], $$($nesting, 'StandardError'), $nesting)
+    return ($klass($nesting[0], $$('StandardError'), 'ParseError'), nil)
   })($nesting[0], $nesting);
-  if ($truthy((($a = $$$('::', 'ParseError', 'skip_raise')) ? 'constant' : nil))) {
-  } else {
-    Opal.const_set($nesting[0], 'ParseError', $$$($$($nesting, 'Racc'), 'ParseError'))
+  if (!$truthy((($a = $$$('::', 'ParseError', 'skip_raise')) ? 'constant' : nil))) {
+    $const_set($nesting[0], 'ParseError', $$$($$('Racc'), 'ParseError'))
   };
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Racc');
 
-    var $nesting = [self].concat($parent_nesting), $a;
+    var $a, $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
-    if ($truthy((($a = $$($nesting, 'Racc_No_Extensions', 'skip_raise')) ? 'constant' : nil))) {
-    } else {
-      Opal.const_set($nesting[0], 'Racc_No_Extensions', false)
+    if (!$truthy((($a = $$('Racc_No_Extensions', 'skip_raise')) ? 'constant' : nil))) {
+      $const_set($nesting[0], 'Racc_No_Extensions', false)
     };
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Parser');
 
-      var $nesting = [self].concat($parent_nesting), $Parser_racc_runtime_type$1, $Parser__racc_setup$2, $Parser__racc_init_sysvars$3, $Parser_do_parse$4, $Parser_next_token$5, $Parser__racc_do_parse_rb$6, $Parser_yyparse$8, $Parser__racc_yyparse_rb$9, $Parser__racc_evalact$12, $Parser__racc_do_reduce$14, $Parser_on_error$15, $Parser_yyerror$16, $Parser_yyaccept$17, $Parser_yyerrok$18, $Parser_racc_read_token$19, $Parser_racc_shift$20, $Parser_racc_reduce$21, $Parser_racc_accept$23, $Parser_racc_e_pop$24, $Parser_racc_next_state$25, $Parser_racc_print_stacks$26, $Parser_racc_print_states$28, $Parser_racc_token2str$30, $Parser_token_to_str$31;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.yydebug = self.$$prototype.racc_debug_out = self.$$prototype.racc_error_status = self.$$prototype.racc_t = self.$$prototype.racc_vstack = self.$$prototype.racc_val = self.$$prototype.racc_state = self.$$prototype.racc_tstack = nil;
+      $proto.yydebug = $proto.racc_debug_out = $proto.racc_error_status = $proto.racc_t = $proto.racc_vstack = $proto.racc_val = $proto.racc_state = $proto.racc_tstack = nil;
       
-      Opal.const_set($nesting[0], 'Racc_Runtime_Version', "1.4.6");
-      Opal.const_set($nesting[0], 'Racc_Runtime_Revision', ["originalRevision:", "1.8"]['$[]'](1));
-      Opal.const_set($nesting[0], 'Racc_Runtime_Core_Version_R', "1.4.6");
-      Opal.const_set($nesting[0], 'Racc_Runtime_Core_Revision_R', ["originalRevision:", "1.8"]['$[]'](1));
-      Opal.const_set($nesting[0], 'Racc_Main_Parsing_Routine', "_racc_do_parse_rb");
-      Opal.const_set($nesting[0], 'Racc_YY_Parse_Method', "_racc_yyparse_rb");
-      Opal.const_set($nesting[0], 'Racc_Runtime_Core_Version', $$($nesting, 'Racc_Runtime_Core_Version_R'));
-      Opal.const_set($nesting[0], 'Racc_Runtime_Core_Revision', $$($nesting, 'Racc_Runtime_Core_Revision_R'));
-      Opal.const_set($nesting[0], 'Racc_Runtime_Type', "ruby");
-      Opal.defs($$($nesting, 'Parser'), '$racc_runtime_type', $Parser_racc_runtime_type$1 = function $$racc_runtime_type() {
-        var self = this;
-
-        return $$($nesting, 'Racc_Runtime_Type')
-      }, $Parser_racc_runtime_type$1.$$arity = 0);
+      $const_set($nesting[0], 'Racc_Runtime_Version', "1.4.6");
+      $const_set($nesting[0], 'Racc_Runtime_Revision', ["originalRevision:", "1.8"]['$[]'](1));
+      $const_set($nesting[0], 'Racc_Runtime_Core_Version_R', "1.4.6");
+      $const_set($nesting[0], 'Racc_Runtime_Core_Revision_R', ["originalRevision:", "1.8"]['$[]'](1));
+      $const_set($nesting[0], 'Racc_Main_Parsing_Routine', "_racc_do_parse_rb");
+      $const_set($nesting[0], 'Racc_YY_Parse_Method', "_racc_yyparse_rb");
+      $const_set($nesting[0], 'Racc_Runtime_Core_Version', $$('Racc_Runtime_Core_Version_R'));
+      $const_set($nesting[0], 'Racc_Runtime_Core_Revision', $$('Racc_Runtime_Core_Revision_R'));
+      $const_set($nesting[0], 'Racc_Runtime_Type', "ruby");
+      $defs($$('Parser'), '$racc_runtime_type', function $$racc_runtime_type() {
+        
+        return $$('Racc_Runtime_Type')
+      }, 0);
       
-      Opal.def(self, '$_racc_setup', $Parser__racc_setup$2 = function $$_racc_setup() {
+      $def(self, '$_racc_setup', function $$_racc_setup() {
         var $a, $b, self = this, $ret_or_1 = nil, arg = nil, $writer = nil;
         if ($gvars.stderr == null) $gvars.stderr = nil;
 
         
-        if ($truthy($$$(self.$class(), 'Racc_debug_parser'))) {
-        } else {
+        if (!$truthy($$$(self.$class(), 'Racc_debug_parser'))) {
           self.yydebug = false
         };
-        if ($truthy((($a = self['yydebug'], $a != null && $a !== nil) ? 'instance-variable' : nil))) {
-        } else {
+        if (!$truthy((($a = self['yydebug'], $a != null && $a !== nil) ? 'instance-variable' : nil))) {
           self.yydebug = false
         };
         if ($truthy(self.yydebug)) {
           
-          if ($truthy((($b = self['racc_debug_out'], $b != null && $b !== nil) ? 'instance-variable' : nil))) {
-          } else {
+          if (!$truthy((($b = self['racc_debug_out'], $b != null && $b !== nil) ? 'instance-variable' : nil))) {
             self.racc_debug_out = $gvars.stderr
           };
-          self.racc_debug_out = (function() {if ($truthy(($ret_or_1 = self.racc_debug_out))) {
-            return $ret_or_1
-          } else {
-            return $gvars.stderr
-          }; return nil; })();};
+          self.racc_debug_out = ($truthy(($ret_or_1 = self.racc_debug_out)) ? ($ret_or_1) : ($gvars.stderr));
+        };
         arg = $$$(self.$class(), 'Racc_arg');
         if ($truthy($rb_lt(arg.$size(), 14))) {
           
           $writer = [13, true];
-          $send(arg, '[]=', Opal.to_a($writer));
-          $writer[$rb_minus($writer["length"], 1)];};
+          $send(arg, '[]=', $to_a($writer));
+          $writer[$rb_minus($writer["length"], 1)];
+        };
         return arg;
-      }, $Parser__racc_setup$2.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$_racc_init_sysvars', $Parser__racc_init_sysvars$3 = function $$_racc_init_sysvars() {
+      $def(self, '$_racc_init_sysvars', function $$_racc_init_sysvars() {
         var self = this;
 
         
@@ -2850,28 +2555,28 @@ Opal.modules["racc/parser"] = function(Opal) {
         self.racc_read_next = true;
         self.racc_user_yyerror = false;
         return (self.racc_error_status = 0);
-      }, $Parser__racc_init_sysvars$3.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$do_parse', $Parser_do_parse$4 = function $$do_parse() {
+      $def(self, '$do_parse', function $$do_parse() {
         var self = this;
 
-        return self.$__send__($$($nesting, 'Racc_Main_Parsing_Routine'), self.$_racc_setup(), false)
-      }, $Parser_do_parse$4.$$arity = 0);
+        return self.$__send__($$('Racc_Main_Parsing_Routine'), self.$_racc_setup(), false)
+      }, 0);
       
-      Opal.def(self, '$next_token', $Parser_next_token$5 = function $$next_token() {
+      $def(self, '$next_token', function $$next_token() {
         var self = this;
 
-        return self.$raise($$($nesting, 'NotImplementedError'), "" + (self.$class()) + "#next_token is not defined")
-      }, $Parser_next_token$5.$$arity = 0);
+        return self.$raise($$('NotImplementedError'), "" + (self.$class()) + "#next_token is not defined")
+      }, 0);
       
-      Opal.def(self, '$_racc_do_parse_rb', $Parser__racc_do_parse_rb$6 = function $$_racc_do_parse_rb(arg, in_debug) {
-        var $a, $b, $$7, self = this, action_table = nil, action_check = nil, action_default = nil, action_pointer = nil, _ = nil, token_table = nil, tok = nil, act = nil, i = nil;
+      $def(self, '$_racc_do_parse_rb', function $$_racc_do_parse_rb(arg, in_debug) {
+        var $a, $b, self = this, action_table = nil, action_check = nil, action_default = nil, action_pointer = nil, _ = nil, token_table = nil, tok = nil, act = nil, i = nil;
 
         
-        $b = arg, $a = Opal.to_ary($b), (action_table = ($a[0] == null ? nil : $a[0])), (action_check = ($a[1] == null ? nil : $a[1])), (action_default = ($a[2] == null ? nil : $a[2])), (action_pointer = ($a[3] == null ? nil : $a[3])), (_ = ($a[4] == null ? nil : $a[4])), (_ = ($a[5] == null ? nil : $a[5])), (_ = ($a[6] == null ? nil : $a[6])), (_ = ($a[7] == null ? nil : $a[7])), (_ = ($a[8] == null ? nil : $a[8])), (_ = ($a[9] == null ? nil : $a[9])), (token_table = ($a[10] == null ? nil : $a[10])), (_ = ($a[11] == null ? nil : $a[11])), (_ = ($a[12] == null ? nil : $a[12])), (_ = ($a[13] == null ? nil : $a[13])), $b;
+        $b = arg, $a = $to_ary($b), (action_table = ($a[0] == null ? nil : $a[0])), (action_check = ($a[1] == null ? nil : $a[1])), (action_default = ($a[2] == null ? nil : $a[2])), (action_pointer = ($a[3] == null ? nil : $a[3])), (_ = ($a[4] == null ? nil : $a[4])), (_ = ($a[5] == null ? nil : $a[5])), (_ = ($a[6] == null ? nil : $a[6])), (_ = ($a[7] == null ? nil : $a[7])), (_ = ($a[8] == null ? nil : $a[8])), (_ = ($a[9] == null ? nil : $a[9])), (token_table = ($a[10] == null ? nil : $a[10])), (_ = ($a[11] == null ? nil : $a[11])), (_ = ($a[12] == null ? nil : $a[12])), (_ = ($a[13] == null ? nil : $a[13])), $b;
         self.$_racc_init_sysvars();
         tok = (act = (i = nil));
-        return $send(self, 'catch', ["racc_end_parse"], ($$7 = function(){var self = $$7.$$s == null ? this : $$7.$$s, $c, $d, $e, $ret_or_2 = nil, $ret_or_3 = nil, $ret_or_4 = nil;
+        return $send(self, 'catch', ["racc_end_parse"], function $$1(){var $c, $d, $e, self = $$1.$$s == null ? this : $$1.$$s, $ret_or_1 = nil;
           if (self.racc_state == null) self.racc_state = nil;
           if (self.racc_read_next == null) self.racc_read_next = nil;
           if (self.racc_t == null) self.racc_t = nil;
@@ -2883,32 +2588,22 @@ Opal.modules["racc/parser"] = function(Opal) {
             if ($truthy((i = action_pointer['$[]'](self.racc_state['$[]'](-1))))) {
               
               if ($truthy(self.racc_read_next)) {
-                if ($truthy(self.racc_t['$!='](0))) {
+                if ($neqeq(self.racc_t, 0)) {
                   
-                  $e = self.$next_token(), $d = Opal.to_ary($e), (tok = ($d[0] == null ? nil : $d[0])), (self.racc_val = ($d[1] == null ? nil : $d[1])), $e;
+                  $e = self.$next_token(), $d = $to_ary($e), (tok = ($d[0] == null ? nil : $d[0])), (self.racc_val = ($d[1] == null ? nil : $d[1])), $e;
                   if ($truthy(tok)) {
-                    self.racc_t = (function() {if ($truthy(($ret_or_2 = token_table['$[]'](tok)))) {
-                      return $ret_or_2
-                    } else {
-                      return 1
-                    }; return nil; })()
+                    self.racc_t = ($truthy(($ret_or_1 = token_table['$[]'](tok))) ? ($ret_or_1) : (1))
                   } else {
                     self.racc_t = 0
                   };
                   if ($truthy(self.yydebug)) {
-                    self.$racc_read_token(self.racc_t, tok, self.racc_val)};
-                  self.racc_read_next = false;}};
+                    self.$racc_read_token(self.racc_t, tok, self.racc_val)
+                  };
+                  self.racc_read_next = false;
+                }
+              };
               i = $rb_plus(i, self.racc_t);
-              if ($truthy((function() {if ($truthy(($ret_or_3 = (function() {if ($truthy(($ret_or_4 = $rb_ge(i, 0)))) {
-                return (act = action_table['$[]'](i))
-              } else {
-                return $ret_or_4
-              }; return nil; })()))) {
-                return action_check['$[]'](i)['$=='](self.racc_state['$[]'](-1))
-              } else {
-                return $ret_or_3
-              }; return nil; })())) {
-              } else {
+              if (!(($truthy($rb_ge(i, 0)) && ($truthy((act = action_table['$[]'](i))))) && ($eqeq(action_check['$[]'](i), self.racc_state['$[]'](-1))))) {
                 act = action_default['$[]'](self.racc_state['$[]'](-1))
               };
             } else {
@@ -2917,24 +2612,24 @@ Opal.modules["racc/parser"] = function(Opal) {
             while ($truthy((act = self.$_racc_evalact(act, arg)))) {
               
             };
-          }}, $$7.$$s = self, $$7.$$arity = 0, $$7));
-      }, $Parser__racc_do_parse_rb$6.$$arity = 2);
+          }}, {$$arity: 0, $$s: self});
+      }, 2);
       
-      Opal.def(self, '$yyparse', $Parser_yyparse$8 = function $$yyparse(recv, mid) {
+      $def(self, '$yyparse', function $$yyparse(recv, mid) {
         var self = this;
 
-        return self.$__send__($$($nesting, 'Racc_YY_Parse_Method'), recv, mid, self.$_racc_setup(), true)
-      }, $Parser_yyparse$8.$$arity = 2);
+        return self.$__send__($$('Racc_YY_Parse_Method'), recv, mid, self.$_racc_setup(), true)
+      }, 2);
       
-      Opal.def(self, '$_racc_yyparse_rb', $Parser__racc_yyparse_rb$9 = function $$_racc_yyparse_rb(recv, mid, arg, c_debug) {
-        var $a, $b, $$10, self = this, action_table = nil, action_check = nil, action_default = nil, action_pointer = nil, _ = nil, token_table = nil, act = nil, i = nil;
+      $def(self, '$_racc_yyparse_rb', function $$_racc_yyparse_rb(recv, mid, arg, c_debug) {
+        var $a, $b, self = this, action_table = nil, action_check = nil, action_default = nil, action_pointer = nil, _ = nil, token_table = nil, act = nil, i = nil;
 
         
-        $b = arg, $a = Opal.to_ary($b), (action_table = ($a[0] == null ? nil : $a[0])), (action_check = ($a[1] == null ? nil : $a[1])), (action_default = ($a[2] == null ? nil : $a[2])), (action_pointer = ($a[3] == null ? nil : $a[3])), (_ = ($a[4] == null ? nil : $a[4])), (_ = ($a[5] == null ? nil : $a[5])), (_ = ($a[6] == null ? nil : $a[6])), (_ = ($a[7] == null ? nil : $a[7])), (_ = ($a[8] == null ? nil : $a[8])), (_ = ($a[9] == null ? nil : $a[9])), (token_table = ($a[10] == null ? nil : $a[10])), (_ = ($a[11] == null ? nil : $a[11])), (_ = ($a[12] == null ? nil : $a[12])), (_ = ($a[13] == null ? nil : $a[13])), $b;
+        $b = arg, $a = $to_ary($b), (action_table = ($a[0] == null ? nil : $a[0])), (action_check = ($a[1] == null ? nil : $a[1])), (action_default = ($a[2] == null ? nil : $a[2])), (action_pointer = ($a[3] == null ? nil : $a[3])), (_ = ($a[4] == null ? nil : $a[4])), (_ = ($a[5] == null ? nil : $a[5])), (_ = ($a[6] == null ? nil : $a[6])), (_ = ($a[7] == null ? nil : $a[7])), (_ = ($a[8] == null ? nil : $a[8])), (_ = ($a[9] == null ? nil : $a[9])), (token_table = ($a[10] == null ? nil : $a[10])), (_ = ($a[11] == null ? nil : $a[11])), (_ = ($a[12] == null ? nil : $a[12])), (_ = ($a[13] == null ? nil : $a[13])), $b;
         self.$_racc_init_sysvars();
         act = nil;
         i = nil;
-        return $send(self, 'catch', ["racc_end_parse"], ($$10 = function(){var self = $$10.$$s == null ? this : $$10.$$s, $c, $d, $$11;
+        return $send(self, 'catch', ["racc_end_parse"], function $$2(){var $c, $d, self = $$2.$$s == null ? this : $$2.$$s;
           if (self.racc_state == null) self.racc_state = nil;
 
           
@@ -2943,141 +2638,101 @@ Opal.modules["racc/parser"] = function(Opal) {
               
             }
           };
-          return $send(recv, '__send__', [mid], ($$11 = function(tok, val){var self = $$11.$$s == null ? this : $$11.$$s, $e, $f, $ret_or_5 = nil, $ret_or_6 = nil, $ret_or_7 = nil, $ret_or_8 = nil, $ret_or_9 = nil, $ret_or_10 = nil, $ret_or_11 = nil, $ret_or_12 = nil, $ret_or_13 = nil;
+          return $send(recv, '__send__', [mid], function $$3(tok, val){var $e, $f, self = $$3.$$s == null ? this : $$3.$$s, $ret_or_1 = nil, $ret_or_2 = nil;
             if (self.racc_t == null) self.racc_t = nil;
             if (self.racc_state == null) self.racc_state = nil;
             if (self.racc_read_next == null) self.racc_read_next = nil;
 
             
             
-            if (tok == null) {
-              tok = nil;
-            };
+            if (tok == null) tok = nil;;
             
-            if (val == null) {
-              val = nil;
-            };
+            if (val == null) val = nil;;
             if ($truthy(tok)) {
-              self.racc_t = (function() {if ($truthy(($ret_or_5 = token_table['$[]'](tok)))) {
-                return $ret_or_5
-              } else {
-                return 1
-              }; return nil; })()
+              self.racc_t = ($truthy(($ret_or_1 = token_table['$[]'](tok))) ? ($ret_or_1) : (1))
             } else {
               self.racc_t = 0
             };
             self.racc_val = val;
             self.racc_read_next = false;
             i = $rb_plus(i, self.racc_t);
-            if ($truthy((function() {if ($truthy(($ret_or_6 = (function() {if ($truthy(($ret_or_7 = $rb_ge(i, 0)))) {
-              return (act = action_table['$[]'](i))
-            } else {
-              return $ret_or_7
-            }; return nil; })()))) {
-              return action_check['$[]'](i)['$=='](self.racc_state['$[]'](-1))
-            } else {
-              return $ret_or_6
-            }; return nil; })())) {
-            } else {
+            if (!(($truthy($rb_ge(i, 0)) && ($truthy((act = action_table['$[]'](i))))) && ($eqeq(action_check['$[]'](i), self.racc_state['$[]'](-1))))) {
               act = action_default['$[]'](self.racc_state['$[]'](-1))
             };
             while ($truthy((act = self.$_racc_evalact(act, arg)))) {
               
             };
-            while ($truthy((function() {if ($truthy(($ret_or_8 = (function() {if ($truthy(($ret_or_9 = (i = action_pointer['$[]'](self.racc_state['$[]'](-1)))['$!']()))) {
-              return $ret_or_9
-            } else {
-              return self.racc_read_next['$!']()
-            }; return nil; })()))) {
-              return $ret_or_8
-            } else {
-              return self.racc_t['$=='](0)
-            }; return nil; })())) {
+            while ($truthy(($truthy(($ret_or_1 = ($truthy(($ret_or_2 = (i = action_pointer['$[]'](self.racc_state['$[]'](-1)))['$!']())) ? ($ret_or_2) : (self.racc_read_next['$!']())))) ? ($ret_or_1) : (self.racc_t['$=='](0))))) {
               
-              if ($truthy((function() {if ($truthy(($ret_or_10 = (function() {if ($truthy(($ret_or_11 = (function() {if ($truthy(($ret_or_12 = (function() {if ($truthy(($ret_or_13 = i))) {
-                return (i = $rb_plus(i, self.racc_t))
-              } else {
-                return $ret_or_13
-              }; return nil; })()))) {
-                return $rb_ge(i, 0)
-              } else {
-                return $ret_or_12
-              }; return nil; })()))) {
-                return (act = action_table['$[]'](i))
-              } else {
-                return $ret_or_11
-              }; return nil; })()))) {
-                return action_check['$[]'](i)['$=='](self.racc_state['$[]'](-1))
-              } else {
-                return $ret_or_10
-              }; return nil; })())) {
-              } else {
+              if (!(((($truthy(i) && ($truthy((i = $rb_plus(i, self.racc_t))))) && ($truthy($rb_ge(i, 0)))) && ($truthy((act = action_table['$[]'](i))))) && ($eqeq(action_check['$[]'](i), self.racc_state['$[]'](-1))))) {
                 act = action_default['$[]'](self.racc_state['$[]'](-1))
               };
               while ($truthy((act = self.$_racc_evalact(act, arg)))) {
                 
               };
-            };}, $$11.$$s = self, $$11.$$arity = 2, $$11));}, $$10.$$s = self, $$10.$$arity = 0, $$10));
-      }, $Parser__racc_yyparse_rb$9.$$arity = 4);
+            };}, {$$arity: 2, $$s: self});}, {$$arity: 0, $$s: self});
+      }, 4);
       
-      Opal.def(self, '$_racc_evalact', $Parser__racc_evalact$12 = function $$_racc_evalact(act, arg) {
-        var $a, $b, $$13, self = this, action_table = nil, action_check = nil, _ = nil, action_pointer = nil, shift_n = nil, reduce_n = nil, $ret_or_14 = nil, $ret_or_15 = nil, code = nil, $case = nil, i = nil, $ret_or_16 = nil, $ret_or_17 = nil;
+      $def(self, '$_racc_evalact', function $$_racc_evalact(act, arg) {
+        var $a, $b, self = this, action_table = nil, action_check = nil, _ = nil, action_pointer = nil, shift_n = nil, reduce_n = nil, code = nil, $ret_or_1 = nil, i = nil;
 
         
-        $b = arg, $a = Opal.to_ary($b), (action_table = ($a[0] == null ? nil : $a[0])), (action_check = ($a[1] == null ? nil : $a[1])), (_ = ($a[2] == null ? nil : $a[2])), (action_pointer = ($a[3] == null ? nil : $a[3])), (_ = ($a[4] == null ? nil : $a[4])), (_ = ($a[5] == null ? nil : $a[5])), (_ = ($a[6] == null ? nil : $a[6])), (_ = ($a[7] == null ? nil : $a[7])), (_ = ($a[8] == null ? nil : $a[8])), (_ = ($a[9] == null ? nil : $a[9])), (_ = ($a[10] == null ? nil : $a[10])), (shift_n = ($a[11] == null ? nil : $a[11])), (reduce_n = ($a[12] == null ? nil : $a[12])), (_ = ($a[13] == null ? nil : $a[13])), (_ = ($a[14] == null ? nil : $a[14])), $b;
-        if ($truthy((function() {if ($truthy(($ret_or_14 = $rb_gt(act, 0)))) {
-          return $rb_lt(act, shift_n)
-        } else {
-          return $ret_or_14
-        }; return nil; })())) {
+        $b = arg, $a = $to_ary($b), (action_table = ($a[0] == null ? nil : $a[0])), (action_check = ($a[1] == null ? nil : $a[1])), (_ = ($a[2] == null ? nil : $a[2])), (action_pointer = ($a[3] == null ? nil : $a[3])), (_ = ($a[4] == null ? nil : $a[4])), (_ = ($a[5] == null ? nil : $a[5])), (_ = ($a[6] == null ? nil : $a[6])), (_ = ($a[7] == null ? nil : $a[7])), (_ = ($a[8] == null ? nil : $a[8])), (_ = ($a[9] == null ? nil : $a[9])), (_ = ($a[10] == null ? nil : $a[10])), (shift_n = ($a[11] == null ? nil : $a[11])), (reduce_n = ($a[12] == null ? nil : $a[12])), (_ = ($a[13] == null ? nil : $a[13])), (_ = ($a[14] == null ? nil : $a[14])), $b;
+        if (($truthy($rb_gt(act, 0)) && ($truthy($rb_lt(act, shift_n))))) {
           
           if ($truthy($rb_gt(self.racc_error_status, 0))) {
-            if (self.racc_t['$=='](1)) {
-            } else {
+            if (!$eqeq(self.racc_t, 1)) {
               self.racc_error_status = $rb_minus(self.racc_error_status, 1)
-            }};
+            }
+          };
           self.racc_vstack.$push(self.racc_val);
           self.racc_state.$push(act);
           self.racc_read_next = true;
           if ($truthy(self.yydebug)) {
             
             self.racc_tstack.$push(self.racc_t);
-            self.$racc_shift(self.racc_t, self.racc_tstack, self.racc_vstack);};
-        } else if ($truthy((function() {if ($truthy(($ret_or_15 = $rb_lt(act, 0)))) {
-          return $rb_gt(act, reduce_n['$-@']())
-        } else {
-          return $ret_or_15
-        }; return nil; })())) {
+            self.$racc_shift(self.racc_t, self.racc_tstack, self.racc_vstack);
+          };
+        } else if (($truthy($rb_lt(act, 0)) && ($truthy($rb_gt(act, reduce_n['$-@']()))))) {
           
-          code = $send(self, 'catch', ["racc_jump"], ($$13 = function(){var self = $$13.$$s == null ? this : $$13.$$s;
+          code = $send(self, 'catch', ["racc_jump"], function $$4(){var self = $$4.$$s == null ? this : $$4.$$s;
             if (self.racc_state == null) self.racc_state = nil;
 
             
             self.racc_state.$push(self.$_racc_do_reduce(arg, act));
-            return false;}, $$13.$$s = self, $$13.$$arity = 0, $$13));
+            return false;}, {$$arity: 0, $$s: self});
           if ($truthy(code)) {
-            $case = code;
-            if ((1)['$===']($case)) {
-            self.racc_user_yyerror = true;
-            return reduce_n['$-@']();}
-            else if ((2)['$===']($case)) {return shift_n}
-            else {self.$raise("[Racc Bug] unknown jump code")}};
-        } else if (act['$=='](shift_n)) {
+            if ($eqeqeq(1, ($ret_or_1 = code))) {
+              
+              self.racc_user_yyerror = true;
+              return reduce_n['$-@']();
+            } else if ($eqeqeq(2, $ret_or_1)) {
+              return shift_n
+            } else {
+              self.$raise("[Racc Bug] unknown jump code")
+            }
+          };
+        } else if ($eqeq(act, shift_n)) {
           
           if ($truthy(self.yydebug)) {
-            self.$racc_accept()};
+            self.$racc_accept()
+          };
           self.$throw("racc_end_parse", self.racc_vstack['$[]'](0));
-        } else if (act['$=='](reduce_n['$-@']())) {
+        } else if ($eqeq(act, reduce_n['$-@']())) {
           
-          $case = self.racc_error_status;
-          if ((0)['$===']($case)) {if ($truthy(arg['$[]'](21))) {
+          if ($eqeqeq(0, ($ret_or_1 = self.racc_error_status))) {
+            if (!$truthy(arg['$[]'](21))) {
+              self.$on_error(self.racc_t, self.racc_val, self.racc_vstack)
+            }
+          } else if ($eqeqeq(3, $ret_or_1)) {
+            
+            if ($eqeq(self.racc_t, 0)) {
+              self.$throw("racc_end_parse", nil)
+            };
+            self.racc_read_next = true;
           } else {
-            self.$on_error(self.racc_t, self.racc_val, self.racc_vstack)
-          }}
-          else if ((3)['$===']($case)) {
-          if (self.racc_t['$=='](0)) {
-            self.$throw("racc_end_parse", nil)};
-          self.racc_read_next = true;};
+            nil
+          };
           self.racc_user_yyerror = false;
           self.racc_error_status = 3;
           while ($truthy(true)) {
@@ -3085,40 +2740,36 @@ Opal.modules["racc/parser"] = function(Opal) {
             if ($truthy((i = action_pointer['$[]'](self.racc_state['$[]'](-1))))) {
               
               i = $rb_plus(i, 1);
-              if ($truthy((function() {if ($truthy(($ret_or_16 = (function() {if ($truthy(($ret_or_17 = $rb_ge(i, 0)))) {
-                
-                return (act = action_table['$[]'](i));
-              } else {
-                return $ret_or_17
-              }; return nil; })()))) {
-                return action_check['$[]'](i)['$=='](self.racc_state['$[]'](-1))
-              } else {
-                return $ret_or_16
-              }; return nil; })())) {
-                break;};};
+              if ((($truthy($rb_ge(i, 0)) && ($truthy((act = action_table['$[]'](i))))) && ($eqeq(action_check['$[]'](i), self.racc_state['$[]'](-1))))) {
+                break;
+              };
+            };
             if ($truthy($rb_le(self.racc_state.$size(), 1))) {
-              self.$throw("racc_end_parse", nil)};
+              self.$throw("racc_end_parse", nil)
+            };
             self.racc_state.$pop();
             self.racc_vstack.$pop();
             if ($truthy(self.yydebug)) {
               
               self.racc_tstack.$pop();
-              self.$racc_e_pop(self.racc_state, self.racc_tstack, self.racc_vstack);};
+              self.$racc_e_pop(self.racc_state, self.racc_tstack, self.racc_vstack);
+            };
           };
           return act;
         } else {
-          self.$raise("" + "[Racc Bug] unknown action " + (act.$inspect()))
+          self.$raise("[Racc Bug] unknown action " + (act.$inspect()))
         };
         if ($truthy(self.yydebug)) {
-          self.$racc_next_state(self.racc_state['$[]'](-1), self.racc_state)};
+          self.$racc_next_state(self.racc_state['$[]'](-1), self.racc_state)
+        };
         return nil;
-      }, $Parser__racc_evalact$12.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$_racc_do_reduce', $Parser__racc_do_reduce$14 = function $$_racc_do_reduce(arg, act) {
-        var $a, $b, self = this, _ = nil, goto_table = nil, goto_check = nil, goto_default = nil, goto_pointer = nil, nt_base = nil, reduce_table = nil, use_result = nil, state = nil, vstack = nil, tstack = nil, i = nil, len = nil, reduce_to = nil, method_id = nil, void_array = nil, tmp_t = nil, tmp_v = nil, $writer = nil, k1 = nil, $ret_or_18 = nil, $ret_or_19 = nil, curstate = nil;
+      $def(self, '$_racc_do_reduce', function $$_racc_do_reduce(arg, act) {
+        var $a, $b, self = this, _ = nil, goto_table = nil, goto_check = nil, goto_default = nil, goto_pointer = nil, nt_base = nil, reduce_table = nil, use_result = nil, state = nil, vstack = nil, tstack = nil, i = nil, len = nil, reduce_to = nil, method_id = nil, void_array = nil, tmp_t = nil, tmp_v = nil, $writer = nil, k1 = nil, curstate = nil;
 
         
-        $b = arg, $a = Opal.to_ary($b), (_ = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), (_ = ($a[2] == null ? nil : $a[2])), (_ = ($a[3] == null ? nil : $a[3])), (goto_table = ($a[4] == null ? nil : $a[4])), (goto_check = ($a[5] == null ? nil : $a[5])), (goto_default = ($a[6] == null ? nil : $a[6])), (goto_pointer = ($a[7] == null ? nil : $a[7])), (nt_base = ($a[8] == null ? nil : $a[8])), (reduce_table = ($a[9] == null ? nil : $a[9])), (_ = ($a[10] == null ? nil : $a[10])), (_ = ($a[11] == null ? nil : $a[11])), (_ = ($a[12] == null ? nil : $a[12])), (use_result = ($a[13] == null ? nil : $a[13])), $b;
+        $b = arg, $a = $to_ary($b), (_ = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), (_ = ($a[2] == null ? nil : $a[2])), (_ = ($a[3] == null ? nil : $a[3])), (goto_table = ($a[4] == null ? nil : $a[4])), (goto_check = ($a[5] == null ? nil : $a[5])), (goto_default = ($a[6] == null ? nil : $a[6])), (goto_pointer = ($a[7] == null ? nil : $a[7])), (nt_base = ($a[8] == null ? nil : $a[8])), (reduce_table = ($a[9] == null ? nil : $a[9])), (_ = ($a[10] == null ? nil : $a[10])), (_ = ($a[11] == null ? nil : $a[11])), (_ = ($a[12] == null ? nil : $a[12])), (use_result = ($a[13] == null ? nil : $a[13])), $b;
         state = self.racc_state;
         vstack = self.racc_vstack;
         tstack = self.racc_tstack;
@@ -3128,20 +2779,22 @@ Opal.modules["racc/parser"] = function(Opal) {
         method_id = reduce_table['$[]']($rb_plus(i, 2));
         void_array = [];
         if ($truthy(self.yydebug)) {
-          tmp_t = tstack['$[]'](len['$-@'](), len)};
+          tmp_t = tstack['$[]'](len['$-@'](), len)
+        };
         tmp_v = vstack['$[]'](len['$-@'](), len);
         if ($truthy(self.yydebug)) {
           
           $writer = [len['$-@'](), len, void_array];
-          $send(tstack, '[]=', Opal.to_a($writer));
-          $writer[$rb_minus($writer["length"], 1)];};
+          $send(tstack, '[]=', $to_a($writer));
+          $writer[$rb_minus($writer["length"], 1)];
+        };
         
         $writer = [len['$-@'](), len, void_array];
-        $send(vstack, '[]=', Opal.to_a($writer));
+        $send(vstack, '[]=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         
         $writer = [len['$-@'](), len, void_array];
-        $send(state, '[]=', Opal.to_a($writer));
+        $send(state, '[]=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         if ($truthy(use_result)) {
           vstack.$push(self.$__send__(method_id, tmp_v, vstack, tmp_v['$[]'](0)))
@@ -3150,54 +2803,44 @@ Opal.modules["racc/parser"] = function(Opal) {
         };
         tstack.$push(reduce_to);
         if ($truthy(self.yydebug)) {
-          self.$racc_reduce(tmp_t, reduce_to, tstack, vstack)};
+          self.$racc_reduce(tmp_t, reduce_to, tstack, vstack)
+        };
         k1 = $rb_minus(reduce_to, nt_base);
         if ($truthy((i = goto_pointer['$[]'](k1)))) {
           
           i = $rb_plus(i, state['$[]'](-1));
-          if ($truthy((function() {if ($truthy(($ret_or_18 = (function() {if ($truthy(($ret_or_19 = $rb_ge(i, 0)))) {
-            
-            return (curstate = goto_table['$[]'](i));
-          } else {
-            return $ret_or_19
-          }; return nil; })()))) {
-            return goto_check['$[]'](i)['$=='](k1)
-          } else {
-            return $ret_or_18
-          }; return nil; })())) {
-            return curstate};};
+          if ((($truthy($rb_ge(i, 0)) && ($truthy((curstate = goto_table['$[]'](i))))) && ($eqeq(goto_check['$[]'](i), k1)))) {
+            return curstate
+          };
+        };
         return goto_default['$[]'](k1);
-      }, $Parser__racc_do_reduce$14.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$on_error', $Parser_on_error$15 = function $$on_error(t, val, vstack) {
-        var self = this, $ret_or_20 = nil;
+      $def(self, '$on_error', function $$on_error(t, val, vstack) {
+        var self = this, $ret_or_1 = nil;
 
-        return self.$raise($$($nesting, 'ParseError'), self.$sprintf("\nparse error on value %s (%s)", val.$inspect(), (function() {if ($truthy(($ret_or_20 = self.$token_to_str(t)))) {
-          return $ret_or_20
-        } else {
-          return "?"
-        }; return nil; })()))
-      }, $Parser_on_error$15.$$arity = 3);
+        return self.$raise($$('ParseError'), self.$sprintf("\nparse error on value %s (%s)", val.$inspect(), ($truthy(($ret_or_1 = self.$token_to_str(t))) ? ($ret_or_1) : ("?"))))
+      }, 3);
       
-      Opal.def(self, '$yyerror', $Parser_yyerror$16 = function $$yyerror() {
+      $def(self, '$yyerror', function $$yyerror() {
         var self = this;
 
         return self.$throw("racc_jump", 1)
-      }, $Parser_yyerror$16.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$yyaccept', $Parser_yyaccept$17 = function $$yyaccept() {
+      $def(self, '$yyaccept', function $$yyaccept() {
         var self = this;
 
         return self.$throw("racc_jump", 2)
-      }, $Parser_yyaccept$17.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$yyerrok', $Parser_yyerrok$18 = function $$yyerrok() {
+      $def(self, '$yyerrok', function $$yyerrok() {
         var self = this;
 
         return (self.racc_error_status = 0)
-      }, $Parser_yyerrok$18.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$racc_read_token', $Parser_racc_read_token$19 = function $$racc_read_token(t, tok, val) {
+      $def(self, '$racc_read_token', function $$racc_read_token(t, tok, val) {
         var self = this;
 
         
@@ -3205,19 +2848,19 @@ Opal.modules["racc/parser"] = function(Opal) {
         self.racc_debug_out.$print(tok.$inspect(), "(", self.$racc_token2str(t), ") ");
         self.racc_debug_out.$puts(val.$inspect());
         return self.racc_debug_out.$puts();
-      }, $Parser_racc_read_token$19.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$racc_shift', $Parser_racc_shift$20 = function $$racc_shift(tok, tstack, vstack) {
+      $def(self, '$racc_shift', function $$racc_shift(tok, tstack, vstack) {
         var self = this;
 
         
-        self.racc_debug_out.$puts("" + "shift   " + (self.$racc_token2str(tok)));
+        self.racc_debug_out.$puts("shift   " + (self.$racc_token2str(tok)));
         self.$racc_print_stacks(tstack, vstack);
         return self.racc_debug_out.$puts();
-      }, $Parser_racc_shift$20.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$racc_reduce', $Parser_racc_reduce$21 = function $$racc_reduce(toks, sim, tstack, vstack) {
-        var $$22, self = this, out = nil;
+      $def(self, '$racc_reduce', function $$racc_reduce(toks, sim, tstack, vstack) {
+        var self = this, out = nil;
 
         
         out = self.racc_debug_out;
@@ -3225,29 +2868,27 @@ Opal.modules["racc/parser"] = function(Opal) {
         if ($truthy(toks['$empty?']())) {
           out.$print(" <none>")
         } else {
-          $send(toks, 'each', [], ($$22 = function(t){var self = $$22.$$s == null ? this : $$22.$$s;
+          $send(toks, 'each', [], function $$5(t){var self = $$5.$$s == null ? this : $$5.$$s;
 
             
             
-            if (t == null) {
-              t = nil;
-            };
-            return out.$print(" ", self.$racc_token2str(t));}, $$22.$$s = self, $$22.$$arity = 1, $$22))
+            if (t == null) t = nil;;
+            return out.$print(" ", self.$racc_token2str(t));}, {$$arity: 1, $$s: self})
         };
-        out.$puts("" + " --> " + (self.$racc_token2str(sim)));
+        out.$puts(" --> " + (self.$racc_token2str(sim)));
         self.$racc_print_stacks(tstack, vstack);
         return self.racc_debug_out.$puts();
-      }, $Parser_racc_reduce$21.$$arity = 4);
+      }, 4);
       
-      Opal.def(self, '$racc_accept', $Parser_racc_accept$23 = function $$racc_accept() {
+      $def(self, '$racc_accept', function $$racc_accept() {
         var self = this;
 
         
         self.racc_debug_out.$puts("accept");
         return self.racc_debug_out.$puts();
-      }, $Parser_racc_accept$23.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$racc_e_pop', $Parser_racc_e_pop$24 = function $$racc_e_pop(state, tstack, vstack) {
+      $def(self, '$racc_e_pop', function $$racc_e_pop(state, tstack, vstack) {
         var self = this;
 
         
@@ -3255,141 +2896,123 @@ Opal.modules["racc/parser"] = function(Opal) {
         self.$racc_print_states(state);
         self.$racc_print_stacks(tstack, vstack);
         return self.racc_debug_out.$puts();
-      }, $Parser_racc_e_pop$24.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$racc_next_state', $Parser_racc_next_state$25 = function $$racc_next_state(curstate, state) {
+      $def(self, '$racc_next_state', function $$racc_next_state(curstate, state) {
         var self = this;
 
         
-        self.racc_debug_out.$puts("" + "goto    " + (curstate));
+        self.racc_debug_out.$puts("goto    " + (curstate));
         self.$racc_print_states(state);
         return self.racc_debug_out.$puts();
-      }, $Parser_racc_next_state$25.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$racc_print_stacks', $Parser_racc_print_stacks$26 = function $$racc_print_stacks(t, v) {
-        var $$27, self = this, out = nil;
+      $def(self, '$racc_print_stacks', function $$racc_print_stacks(t, v) {
+        var self = this, out = nil;
 
         
         out = self.racc_debug_out;
         out.$print("        [");
-        $send(t, 'each_index', [], ($$27 = function(i){var self = $$27.$$s == null ? this : $$27.$$s;
+        $send(t, 'each_index', [], function $$6(i){var self = $$6.$$s == null ? this : $$6.$$s;
 
           
           
-          if (i == null) {
-            i = nil;
-          };
-          return out.$print(" (", self.$racc_token2str(t['$[]'](i)), " ", v['$[]'](i).$inspect(), ")");}, $$27.$$s = self, $$27.$$arity = 1, $$27));
+          if (i == null) i = nil;;
+          return out.$print(" (", self.$racc_token2str(t['$[]'](i)), " ", v['$[]'](i).$inspect(), ")");}, {$$arity: 1, $$s: self});
         return out.$puts(" ]");
-      }, $Parser_racc_print_stacks$26.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$racc_print_states', $Parser_racc_print_states$28 = function $$racc_print_states(s) {
-        var $$29, self = this, out = nil;
+      $def(self, '$racc_print_states', function $$racc_print_states(s) {
+        var self = this, out = nil;
 
         
         out = self.racc_debug_out;
         out.$print("        [");
-        $send(s, 'each', [], ($$29 = function(st){var self = $$29.$$s == null ? this : $$29.$$s;
-
+        $send(s, 'each', [], function $$7(st){
           
           
-          if (st == null) {
-            st = nil;
-          };
-          return out.$print(" ", st);}, $$29.$$s = self, $$29.$$arity = 1, $$29));
+          if (st == null) st = nil;;
+          return out.$print(" ", st);}, 1);
         return out.$puts(" ]");
-      }, $Parser_racc_print_states$28.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$racc_token2str', $Parser_racc_token2str$30 = function $$racc_token2str(tok) {
-        var self = this, $ret_or_21 = nil;
+      $def(self, '$racc_token2str', function $$racc_token2str(tok) {
+        var self = this, $ret_or_1 = nil;
 
-        if ($truthy(($ret_or_21 = $$$(self.$class(), 'Racc_token_to_s_table')['$[]'](tok)))) {
-          return $ret_or_21
+        if ($truthy(($ret_or_1 = $$$(self.$class(), 'Racc_token_to_s_table')['$[]'](tok)))) {
+          return $ret_or_1
         } else {
-          return self.$raise("" + "[Racc Bug] can't convert token " + (tok) + " to string")
+          return self.$raise("[Racc Bug] can't convert token " + (tok) + " to string")
         }
-      }, $Parser_racc_token2str$30.$$arity = 1);
-      return (Opal.def(self, '$token_to_str', $Parser_token_to_str$31 = function $$token_to_str(t) {
+      }, 1);
+      return $def(self, '$token_to_str', function $$token_to_str(t) {
         var self = this;
 
         return $$$(self.$class(), 'Racc_token_to_s_table')['$[]'](t)
-      }, $Parser_token_to_str$31.$$arity = 1), nil) && 'token_to_str';
+      }, 1);
     })($nesting[0], null, $nesting);
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/messages"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $hash2 = Opal.hash2, $truthy = Opal.truthy;
+Opal.modules["parser/messages"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $const_set = Opal.const_set, $hash2 = Opal.hash2, $truthy = Opal.truthy, $eqeqeq = Opal.eqeqeq, $defs = Opal.defs;
 
-  Opal.add_stubs(['$freeze', '$[]', '$===', '$empty?', '$format']);
+  Opal.add_stubs('freeze,[],empty?,===,format');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
     var $nesting = [self].concat($parent_nesting);
 
     
-    Opal.const_set($nesting[0], 'MESSAGES', $hash2(["unicode_point_too_large", "invalid_escape", "incomplete_escape", "invalid_hex_escape", "invalid_unicode_escape", "unterminated_unicode", "escape_eof", "string_eof", "regexp_options", "cvar_name", "ivar_name", "trailing_in_number", "empty_numeric", "invalid_octal", "no_dot_digit_literal", "bare_backslash", "unexpected", "embedded_document", "heredoc_id_has_newline", "heredoc_id_ends_with_nl", "unterminated_heredoc_id", "invalid_escape_use", "ambiguous_literal", "ambiguous_regexp", "ambiguous_prefix", "triple_dot_at_eol", "nth_ref_alias", "begin_in_method", "backref_assignment", "invalid_assignment", "module_name_const", "unexpected_token", "argument_const", "argument_ivar", "argument_gvar", "argument_cvar", "duplicate_argument", "empty_symbol", "odd_hash", "singleton_literal", "dynamic_const", "const_reassignment", "module_in_def", "class_in_def", "unexpected_percent_str", "block_and_blockarg", "masgn_as_condition", "block_given_to_yield", "invalid_regexp", "invalid_return", "csend_in_lhs_of_masgn", "cant_assign_to_numparam", "reserved_for_numparam", "ordinary_param_defined", "numparam_used_in_outer_scope", "circular_argument_reference", "pm_interp_in_var_name", "lvar_name", "undefined_lvar", "duplicate_variable_name", "duplicate_pattern_key", "endless_setter", "invalid_id_to_get", "forward_arg_after_restarg", "no_anonymous_blockarg", "useless_else", "duplicate_hash_key", "invalid_encoding", "invalid_action", "clobbered", "different_replacements", "swallowed_insertions", "swallowed_insertions_conflict", "crossing_deletions", "crossing_deletions_conflict", "crossing_insertions", "crossing_insertions_conflict"], {"unicode_point_too_large": "invalid Unicode codepoint (too large)", "invalid_escape": "invalid escape character syntax", "incomplete_escape": "incomplete character syntax", "invalid_hex_escape": "invalid hex escape", "invalid_unicode_escape": "invalid Unicode escape", "unterminated_unicode": "unterminated Unicode escape", "escape_eof": "escape sequence meets end of file", "string_eof": "unterminated string meets end of file", "regexp_options": "unknown regexp options: %{options}", "cvar_name": "`%{name}' is not allowed as a class variable name", "ivar_name": "`%{name}' is not allowed as an instance variable name", "trailing_in_number": "trailing `%{character}' in number", "empty_numeric": "numeric literal without digits", "invalid_octal": "invalid octal digit", "no_dot_digit_literal": "no .<digit> floating literal anymore; put 0 before dot", "bare_backslash": "bare backslash only allowed before newline", "unexpected": "unexpected `%{character}'", "embedded_document": "embedded document meets end of file (and they embark on a romantic journey)", "heredoc_id_has_newline": "here document identifier across newlines, never match", "heredoc_id_ends_with_nl": "here document identifier ends with a newline", "unterminated_heredoc_id": "unterminated heredoc id", "invalid_escape_use": "invalid character syntax; use ?%{escape}", "ambiguous_literal": "ambiguous first argument; put parentheses or a space even after the operator", "ambiguous_regexp": "ambiguity between regexp and two divisions: wrap regexp in parentheses or add a space after `/' operator", "ambiguous_prefix": "`%{prefix}' interpreted as argument prefix", "triple_dot_at_eol": "... at EOL, should be parenthesized", "nth_ref_alias": "cannot define an alias for a back-reference variable", "begin_in_method": "BEGIN in method", "backref_assignment": "cannot assign to a back-reference variable", "invalid_assignment": "cannot assign to a keyword", "module_name_const": "class or module name must be a constant literal", "unexpected_token": "unexpected token %{token}", "argument_const": "formal argument cannot be a constant", "argument_ivar": "formal argument cannot be an instance variable", "argument_gvar": "formal argument cannot be a global variable", "argument_cvar": "formal argument cannot be a class variable", "duplicate_argument": "duplicate argument name", "empty_symbol": "empty symbol literal", "odd_hash": "odd number of entries for a hash", "singleton_literal": "cannot define a singleton method for a literal", "dynamic_const": "dynamic constant assignment", "const_reassignment": "constant re-assignment", "module_in_def": "module definition in method body", "class_in_def": "class definition in method body", "unexpected_percent_str": "%{type}: unknown type of percent-literal", "block_and_blockarg": "both block argument and literal block are passed", "masgn_as_condition": "multiple assignment in conditional context", "block_given_to_yield": "block given to yield", "invalid_regexp": "%{message}", "invalid_return": "Invalid return in class/module body", "csend_in_lhs_of_masgn": "&. inside multiple assignment destination", "cant_assign_to_numparam": "cannot assign to numbered parameter %{name}", "reserved_for_numparam": "%{name} is reserved for numbered parameter", "ordinary_param_defined": "ordinary parameter is defined", "numparam_used_in_outer_scope": "numbered parameter is already used in an outer scope", "circular_argument_reference": "circular argument reference %{var_name}", "pm_interp_in_var_name": "symbol literal with interpolation is not allowed", "lvar_name": "`%{name}' is not allowed as a local variable name", "undefined_lvar": "no such local variable: `%{name}'", "duplicate_variable_name": "duplicate variable name %{name}", "duplicate_pattern_key": "duplicate hash pattern key %{name}", "endless_setter": "setter method cannot be defined in an endless method definition", "invalid_id_to_get": "identifier %{identifier} is not valid to get", "forward_arg_after_restarg": "... after rest argument", "no_anonymous_blockarg": "no anonymous block parameter", "useless_else": "else without rescue is useless", "duplicate_hash_key": "key is duplicated and overwritten", "invalid_encoding": "literal contains escape sequences incompatible with UTF-8", "invalid_action": "cannot %{action}", "clobbered": "clobbered by: %{action}", "different_replacements": "different replacements: %{replacement} vs %{other_replacement}", "swallowed_insertions": "this replacement:", "swallowed_insertions_conflict": "swallows some inner rewriting actions:", "crossing_deletions": "the deletion of:", "crossing_deletions_conflict": "is crossing:", "crossing_insertions": "the rewriting action on:", "crossing_insertions_conflict": "is crossing that on:"}).$freeze());
+    $const_set($nesting[0], 'MESSAGES', $hash2(["unicode_point_too_large", "invalid_escape", "incomplete_escape", "invalid_hex_escape", "invalid_unicode_escape", "unterminated_unicode", "escape_eof", "string_eof", "regexp_options", "cvar_name", "ivar_name", "trailing_in_number", "empty_numeric", "invalid_octal", "no_dot_digit_literal", "bare_backslash", "unexpected", "embedded_document", "heredoc_id_has_newline", "heredoc_id_ends_with_nl", "unterminated_heredoc_id", "invalid_escape_use", "ambiguous_literal", "ambiguous_regexp", "ambiguous_prefix", "triple_dot_at_eol", "nth_ref_alias", "begin_in_method", "backref_assignment", "invalid_assignment", "module_name_const", "unexpected_token", "argument_const", "argument_ivar", "argument_gvar", "argument_cvar", "duplicate_argument", "empty_symbol", "odd_hash", "singleton_literal", "dynamic_const", "const_reassignment", "module_in_def", "class_in_def", "unexpected_percent_str", "block_and_blockarg", "masgn_as_condition", "block_given_to_yield", "invalid_regexp", "invalid_return", "csend_in_lhs_of_masgn", "cant_assign_to_numparam", "reserved_for_numparam", "ordinary_param_defined", "numparam_used_in_outer_scope", "circular_argument_reference", "pm_interp_in_var_name", "lvar_name", "undefined_lvar", "duplicate_variable_name", "duplicate_pattern_key", "endless_setter", "invalid_id_to_get", "forward_arg_after_restarg", "no_anonymous_blockarg", "useless_else", "duplicate_hash_key", "invalid_encoding", "invalid_action", "clobbered", "different_replacements", "swallowed_insertions", "swallowed_insertions_conflict", "crossing_deletions", "crossing_deletions_conflict", "crossing_insertions", "crossing_insertions_conflict"], {"unicode_point_too_large": "invalid Unicode codepoint (too large)", "invalid_escape": "invalid escape character syntax", "incomplete_escape": "incomplete character syntax", "invalid_hex_escape": "invalid hex escape", "invalid_unicode_escape": "invalid Unicode escape", "unterminated_unicode": "unterminated Unicode escape", "escape_eof": "escape sequence meets end of file", "string_eof": "unterminated string meets end of file", "regexp_options": "unknown regexp options: %{options}", "cvar_name": "`%{name}' is not allowed as a class variable name", "ivar_name": "`%{name}' is not allowed as an instance variable name", "trailing_in_number": "trailing `%{character}' in number", "empty_numeric": "numeric literal without digits", "invalid_octal": "invalid octal digit", "no_dot_digit_literal": "no .<digit> floating literal anymore; put 0 before dot", "bare_backslash": "bare backslash only allowed before newline", "unexpected": "unexpected `%{character}'", "embedded_document": "embedded document meets end of file (and they embark on a romantic journey)", "heredoc_id_has_newline": "here document identifier across newlines, never match", "heredoc_id_ends_with_nl": "here document identifier ends with a newline", "unterminated_heredoc_id": "unterminated heredoc id", "invalid_escape_use": "invalid character syntax; use ?%{escape}", "ambiguous_literal": "ambiguous first argument; put parentheses or a space even after the operator", "ambiguous_regexp": "ambiguity between regexp and two divisions: wrap regexp in parentheses or add a space after `/' operator", "ambiguous_prefix": "`%{prefix}' interpreted as argument prefix", "triple_dot_at_eol": "... at EOL, should be parenthesized", "nth_ref_alias": "cannot define an alias for a back-reference variable", "begin_in_method": "BEGIN in method", "backref_assignment": "cannot assign to a back-reference variable", "invalid_assignment": "cannot assign to a keyword", "module_name_const": "class or module name must be a constant literal", "unexpected_token": "unexpected token %{token}", "argument_const": "formal argument cannot be a constant", "argument_ivar": "formal argument cannot be an instance variable", "argument_gvar": "formal argument cannot be a global variable", "argument_cvar": "formal argument cannot be a class variable", "duplicate_argument": "duplicate argument name", "empty_symbol": "empty symbol literal", "odd_hash": "odd number of entries for a hash", "singleton_literal": "cannot define a singleton method for a literal", "dynamic_const": "dynamic constant assignment", "const_reassignment": "constant re-assignment", "module_in_def": "module definition in method body", "class_in_def": "class definition in method body", "unexpected_percent_str": "%{type}: unknown type of percent-literal", "block_and_blockarg": "both block argument and literal block are passed", "masgn_as_condition": "multiple assignment in conditional context", "block_given_to_yield": "block given to yield", "invalid_regexp": "%{message}", "invalid_return": "Invalid return in class/module body", "csend_in_lhs_of_masgn": "&. inside multiple assignment destination", "cant_assign_to_numparam": "cannot assign to numbered parameter %{name}", "reserved_for_numparam": "%{name} is reserved for numbered parameter", "ordinary_param_defined": "ordinary parameter is defined", "numparam_used_in_outer_scope": "numbered parameter is already used in an outer scope", "circular_argument_reference": "circular argument reference %{var_name}", "pm_interp_in_var_name": "symbol literal with interpolation is not allowed", "lvar_name": "`%{name}' is not allowed as a local variable name", "undefined_lvar": "no such local variable: `%{name}'", "duplicate_variable_name": "duplicate variable name %{name}", "duplicate_pattern_key": "duplicate hash pattern key %{name}", "endless_setter": "setter method cannot be defined in an endless method definition", "invalid_id_to_get": "identifier %{identifier} is not valid to get", "forward_arg_after_restarg": "... after rest argument", "no_anonymous_blockarg": "no anonymous block parameter", "useless_else": "else without rescue is useless", "duplicate_hash_key": "key is duplicated and overwritten", "invalid_encoding": "literal contains escape sequences incompatible with UTF-8", "invalid_action": "cannot %{action}", "clobbered": "clobbered by: %{action}", "different_replacements": "different replacements: %{replacement} vs %{other_replacement}", "swallowed_insertions": "this replacement:", "swallowed_insertions_conflict": "swallows some inner rewriting actions:", "crossing_deletions": "the deletion of:", "crossing_deletions_conflict": "is crossing:", "crossing_insertions": "the rewriting action on:", "crossing_insertions_conflict": "is crossing that on:"}).$freeze());
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Messages');
 
-      var $nesting = [self].concat($parent_nesting), $Messages_compile$1;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (Opal.defs(self, '$compile', $Messages_compile$1 = function $$compile(reason, arguments$) {
-        var self = this, template = nil, $ret_or_1 = nil;
+      return $defs(self, '$compile', function $$compile(reason, arguments$) {
+        var self = this, template = nil;
 
         
-        template = $$($nesting, 'MESSAGES')['$[]'](reason);
-        if ($truthy((function() {if ($truthy(($ret_or_1 = $$($nesting, 'Hash')['$==='](arguments$)))) {
-          return arguments$['$empty?']()
-        } else {
-          return $ret_or_1
-        }; return nil; })())) {
-          return template};
+        template = $$('MESSAGES')['$[]'](reason);
+        if (($eqeqeq($$('Hash'), arguments$) && ($truthy(arguments$['$empty?']())))) {
+          return template
+        };
         return self.$format(template, arguments$);
-      }, $Messages_compile$1.$$arity = 2), nil) && 'compile'
+      }, 2)
     })($nesting[0], $nesting);
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/deprecation"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $truthy = Opal.truthy;
+Opal.modules["parser/deprecation"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $truthy = Opal.truthy, $def = Opal.def;
 
-  Opal.add_stubs(['$attr_writer', '$warn']);
+  Opal.add_stubs('attr_writer,warn');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
     var $nesting = [self].concat($parent_nesting);
 
-    return (function($base, $parent_nesting) {
+    return (function($base) {
       var self = $module($base, 'Deprecation');
 
-      var $nesting = [self].concat($parent_nesting), $Deprecation_warn_of_deprecation$1;
-
+      
       
       self.$attr_writer("warned_of_deprecation");
-      return (Opal.def(self, '$warn_of_deprecation', $Deprecation_warn_of_deprecation$1 = function $$warn_of_deprecation() {
+      return $def(self, '$warn_of_deprecation', function $$warn_of_deprecation() {
         var self = this, $ret_or_1 = nil, $ret_or_2 = nil;
         if (self.warned_of_deprecation == null) self.warned_of_deprecation = nil;
 
-        return (self.warned_of_deprecation = (function() {if ($truthy(($ret_or_1 = self.warned_of_deprecation))) {
-          return $ret_or_1
-        } else if ($truthy(($ret_or_2 = self.$warn($$$(self, 'DEPRECATION_WARNING'))))) {
-          return $ret_or_2
-        } else {
-          return true
-        }; return nil; })())
-      }, $Deprecation_warn_of_deprecation$1.$$arity = 0), nil) && 'warn_of_deprecation';
-    })($nesting[0], $nesting)
+        return (self.warned_of_deprecation = ($truthy(($ret_or_1 = self.warned_of_deprecation)) ? ($ret_or_1) : ($truthy(($ret_or_2 = self.$warn($$$(self, 'DEPRECATION_WARNING')))) ? ($ret_or_2) : (true))))
+      }, 0);
+    })($nesting[0])
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/ast/processor"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $alias = Opal.alias, $truthy = Opal.truthy, $slice = Opal.slice;
+Opal.modules["parser/ast/processor"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $def = Opal.def, $alias = Opal.alias, $to_a = Opal.to_a, $not = Opal.not, $truthy = Opal.truthy, $slice = Opal.slice;
 
-  Opal.add_stubs(['$updated', '$process_all', '$on_var', '$!', '$nil?', '$process', '$on_vasgn', '$on_argument', '$is_a?', '$[]', '$children', '$process_regular_node', '$warn']);
+  Opal.add_stubs('updated,process_all,on_var,!,nil?,process,on_vasgn,on_argument,is_a?,[],children,process_regular_node,warn');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -3403,15 +3026,15 @@ Opal.modules["parser/ast/processor"] = function(Opal) {
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'Processor');
 
-        var $nesting = [self].concat($parent_nesting), $Processor_process_regular_node$1, $Processor_on_var$2, $Processor_process_variable_node$3, $Processor_on_vasgn$4, $Processor_process_var_asgn_node$5, $Processor_on_op_asgn$6, $Processor_on_const$7, $Processor_on_casgn$8, $Processor_on_argument$9, $Processor_process_argument_node$10, $Processor_on_procarg0$11, $Processor_on_def$12, $Processor_on_defs$13, $Processor_on_send$14, $Processor_on_numblock$15, $Processor_process_variable_node$16, $Processor_process_var_asgn_node$17, $Processor_process_argument_node$18, $Processor_on_empty_else$19;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
         
         
-        Opal.def(self, '$process_regular_node', $Processor_process_regular_node$1 = function $$process_regular_node(node) {
+        $def(self, '$process_regular_node', function $$process_regular_node(node) {
           var self = this;
 
           return node.$updated(nil, self.$process_all(node))
-        }, $Processor_process_regular_node$1.$$arity = 1);
+        }, 1);
         $alias(self, "on_dstr", "process_regular_node");
         $alias(self, "on_dsym", "process_regular_node");
         $alias(self, "on_regexp", "process_regular_node");
@@ -3425,17 +3048,16 @@ Opal.modules["parser/ast/processor"] = function(Opal) {
         $alias(self, "on_irange", "process_regular_node");
         $alias(self, "on_erange", "process_regular_node");
         
-        Opal.def(self, '$on_var', $Processor_on_var$2 = function $$on_var(node) {
-          var self = this;
-
+        $def(self, '$on_var', function $$on_var(node) {
+          
           return node
-        }, $Processor_on_var$2.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$process_variable_node', $Processor_process_variable_node$3 = function $$process_variable_node(node) {
+        $def(self, '$process_variable_node', function $$process_variable_node(node) {
           var self = this;
 
           return self.$on_var(node)
-        }, $Processor_process_variable_node$3.$$arity = 1);
+        }, 1);
         $alias(self, "on_lvar", "process_variable_node");
         $alias(self, "on_ivar", "process_variable_node");
         $alias(self, "on_gvar", "process_variable_node");
@@ -3443,23 +3065,23 @@ Opal.modules["parser/ast/processor"] = function(Opal) {
         $alias(self, "on_back_ref", "process_variable_node");
         $alias(self, "on_nth_ref", "process_variable_node");
         
-        Opal.def(self, '$on_vasgn', $Processor_on_vasgn$4 = function $$on_vasgn(node) {
+        $def(self, '$on_vasgn', function $$on_vasgn(node) {
           var $a, self = this, name = nil, value_node = nil;
 
           
-          $a = [].concat(Opal.to_a(node)), (name = ($a[0] == null ? nil : $a[0])), (value_node = ($a[1] == null ? nil : $a[1])), $a;
-          if ($truthy(value_node['$nil?']()['$!']())) {
+          $a = [].concat($to_a(node)), (name = ($a[0] == null ? nil : $a[0])), (value_node = ($a[1] == null ? nil : $a[1])), $a;
+          if ($not(value_node['$nil?']())) {
             return node.$updated(nil, [name, self.$process(value_node)])
           } else {
             return node
           };
-        }, $Processor_on_vasgn$4.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$process_var_asgn_node', $Processor_process_var_asgn_node$5 = function $$process_var_asgn_node(node) {
+        $def(self, '$process_var_asgn_node', function $$process_var_asgn_node(node) {
           var self = this;
 
           return self.$on_vasgn(node)
-        }, $Processor_process_var_asgn_node$5.$$arity = 1);
+        }, 1);
         $alias(self, "on_lvasgn", "process_var_asgn_node");
         $alias(self, "on_ivasgn", "process_var_asgn_node");
         $alias(self, "on_gvasgn", "process_var_asgn_node");
@@ -3467,54 +3089,54 @@ Opal.modules["parser/ast/processor"] = function(Opal) {
         $alias(self, "on_and_asgn", "process_regular_node");
         $alias(self, "on_or_asgn", "process_regular_node");
         
-        Opal.def(self, '$on_op_asgn', $Processor_on_op_asgn$6 = function $$on_op_asgn(node) {
+        $def(self, '$on_op_asgn', function $$on_op_asgn(node) {
           var $a, self = this, var_node = nil, method_name = nil, value_node = nil;
 
           
-          $a = [].concat(Opal.to_a(node)), (var_node = ($a[0] == null ? nil : $a[0])), (method_name = ($a[1] == null ? nil : $a[1])), (value_node = ($a[2] == null ? nil : $a[2])), $a;
+          $a = [].concat($to_a(node)), (var_node = ($a[0] == null ? nil : $a[0])), (method_name = ($a[1] == null ? nil : $a[1])), (value_node = ($a[2] == null ? nil : $a[2])), $a;
           return node.$updated(nil, [self.$process(var_node), method_name, self.$process(value_node)]);
-        }, $Processor_on_op_asgn$6.$$arity = 1);
+        }, 1);
         $alias(self, "on_mlhs", "process_regular_node");
         $alias(self, "on_masgn", "process_regular_node");
         
-        Opal.def(self, '$on_const', $Processor_on_const$7 = function $$on_const(node) {
+        $def(self, '$on_const', function $$on_const(node) {
           var $a, self = this, scope_node = nil, name = nil;
 
           
-          $a = [].concat(Opal.to_a(node)), (scope_node = ($a[0] == null ? nil : $a[0])), (name = ($a[1] == null ? nil : $a[1])), $a;
+          $a = [].concat($to_a(node)), (scope_node = ($a[0] == null ? nil : $a[0])), (name = ($a[1] == null ? nil : $a[1])), $a;
           return node.$updated(nil, [self.$process(scope_node), name]);
-        }, $Processor_on_const$7.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$on_casgn', $Processor_on_casgn$8 = function $$on_casgn(node) {
+        $def(self, '$on_casgn', function $$on_casgn(node) {
           var $a, self = this, scope_node = nil, name = nil, value_node = nil;
 
           
-          $a = [].concat(Opal.to_a(node)), (scope_node = ($a[0] == null ? nil : $a[0])), (name = ($a[1] == null ? nil : $a[1])), (value_node = ($a[2] == null ? nil : $a[2])), $a;
-          if ($truthy(value_node['$nil?']()['$!']())) {
+          $a = [].concat($to_a(node)), (scope_node = ($a[0] == null ? nil : $a[0])), (name = ($a[1] == null ? nil : $a[1])), (value_node = ($a[2] == null ? nil : $a[2])), $a;
+          if ($not(value_node['$nil?']())) {
             return node.$updated(nil, [self.$process(scope_node), name, self.$process(value_node)])
           } else {
             return node.$updated(nil, [self.$process(scope_node), name])
           };
-        }, $Processor_on_casgn$8.$$arity = 1);
+        }, 1);
         $alias(self, "on_args", "process_regular_node");
         
-        Opal.def(self, '$on_argument', $Processor_on_argument$9 = function $$on_argument(node) {
+        $def(self, '$on_argument', function $$on_argument(node) {
           var $a, self = this, arg_name = nil, value_node = nil;
 
           
-          $a = [].concat(Opal.to_a(node)), (arg_name = ($a[0] == null ? nil : $a[0])), (value_node = ($a[1] == null ? nil : $a[1])), $a;
-          if ($truthy(value_node['$nil?']()['$!']())) {
+          $a = [].concat($to_a(node)), (arg_name = ($a[0] == null ? nil : $a[0])), (value_node = ($a[1] == null ? nil : $a[1])), $a;
+          if ($not(value_node['$nil?']())) {
             return node.$updated(nil, [arg_name, self.$process(value_node)])
           } else {
             return node
           };
-        }, $Processor_on_argument$9.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$process_argument_node', $Processor_process_argument_node$10 = function $$process_argument_node(node) {
+        $def(self, '$process_argument_node', function $$process_argument_node(node) {
           var self = this;
 
           return self.$on_argument(node)
-        }, $Processor_process_argument_node$10.$$arity = 1);
+        }, 1);
         $alias(self, "on_arg", "process_argument_node");
         $alias(self, "on_optarg", "process_argument_node");
         $alias(self, "on_restarg", "process_argument_node");
@@ -3525,15 +3147,15 @@ Opal.modules["parser/ast/processor"] = function(Opal) {
         $alias(self, "on_kwrestarg", "process_argument_node");
         $alias(self, "on_forward_arg", "process_argument_node");
         
-        Opal.def(self, '$on_procarg0', $Processor_on_procarg0$11 = function $$on_procarg0(node) {
+        $def(self, '$on_procarg0', function $$on_procarg0(node) {
           var self = this;
 
-          if ($truthy(node.$children()['$[]'](0)['$is_a?']($$($nesting, 'Symbol')))) {
+          if ($truthy(node.$children()['$[]'](0)['$is_a?']($$('Symbol')))) {
             return self.$on_argument(node)
           } else {
             return self.$process_regular_node(node)
           }
-        }, $Processor_on_procarg0$11.$$arity = 1);
+        }, 1);
         $alias(self, "on_arg_expr", "process_regular_node");
         $alias(self, "on_restarg_expr", "process_regular_node");
         $alias(self, "on_blockarg_expr", "process_regular_node");
@@ -3542,46 +3164,47 @@ Opal.modules["parser/ast/processor"] = function(Opal) {
         $alias(self, "on_class", "process_regular_node");
         $alias(self, "on_sclass", "process_regular_node");
         
-        Opal.def(self, '$on_def', $Processor_on_def$12 = function $$on_def(node) {
+        $def(self, '$on_def', function $$on_def(node) {
           var $a, self = this, name = nil, args_node = nil, body_node = nil;
 
           
-          $a = [].concat(Opal.to_a(node)), (name = ($a[0] == null ? nil : $a[0])), (args_node = ($a[1] == null ? nil : $a[1])), (body_node = ($a[2] == null ? nil : $a[2])), $a;
+          $a = [].concat($to_a(node)), (name = ($a[0] == null ? nil : $a[0])), (args_node = ($a[1] == null ? nil : $a[1])), (body_node = ($a[2] == null ? nil : $a[2])), $a;
           return node.$updated(nil, [name, self.$process(args_node), self.$process(body_node)]);
-        }, $Processor_on_def$12.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$on_defs', $Processor_on_defs$13 = function $$on_defs(node) {
+        $def(self, '$on_defs', function $$on_defs(node) {
           var $a, self = this, definee_node = nil, name = nil, args_node = nil, body_node = nil;
 
           
-          $a = [].concat(Opal.to_a(node)), (definee_node = ($a[0] == null ? nil : $a[0])), (name = ($a[1] == null ? nil : $a[1])), (args_node = ($a[2] == null ? nil : $a[2])), (body_node = ($a[3] == null ? nil : $a[3])), $a;
+          $a = [].concat($to_a(node)), (definee_node = ($a[0] == null ? nil : $a[0])), (name = ($a[1] == null ? nil : $a[1])), (args_node = ($a[2] == null ? nil : $a[2])), (body_node = ($a[3] == null ? nil : $a[3])), $a;
           return node.$updated(nil, [self.$process(definee_node), name, self.$process(args_node), self.$process(body_node)]);
-        }, $Processor_on_defs$13.$$arity = 1);
+        }, 1);
         $alias(self, "on_undef", "process_regular_node");
         $alias(self, "on_alias", "process_regular_node");
         
-        Opal.def(self, '$on_send', $Processor_on_send$14 = function $$on_send(node) {
+        $def(self, '$on_send', function $$on_send(node) {
           var $a, self = this, receiver_node = nil, method_name = nil, arg_nodes = nil;
 
           
-          $a = [].concat(Opal.to_a(node)), (receiver_node = ($a[0] == null ? nil : $a[0])), (method_name = ($a[1] == null ? nil : $a[1])), (arg_nodes = $slice.call($a, 2)), $a;
+          $a = [].concat($to_a(node)), (receiver_node = ($a[0] == null ? nil : $a[0])), (method_name = ($a[1] == null ? nil : $a[1])), (arg_nodes = $slice.call($a, 2)), $a;
           if ($truthy(receiver_node)) {
-            receiver_node = self.$process(receiver_node)};
-          return node.$updated(nil, [receiver_node, method_name].concat(Opal.to_a(self.$process_all(arg_nodes))));
-        }, $Processor_on_send$14.$$arity = 1);
+            receiver_node = self.$process(receiver_node)
+          };
+          return node.$updated(nil, [receiver_node, method_name].concat($to_a(self.$process_all(arg_nodes))));
+        }, 1);
         $alias(self, "on_csend", "on_send");
         $alias(self, "on_index", "process_regular_node");
         $alias(self, "on_indexasgn", "process_regular_node");
         $alias(self, "on_block", "process_regular_node");
         $alias(self, "on_lambda", "process_regular_node");
         
-        Opal.def(self, '$on_numblock', $Processor_on_numblock$15 = function $$on_numblock(node) {
+        $def(self, '$on_numblock', function $$on_numblock(node) {
           var $a, self = this, method_call = nil, max_numparam = nil, body = nil;
 
           
-          $a = [].concat(Opal.to_a(node)), (method_call = ($a[0] == null ? nil : $a[0])), (max_numparam = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), $a;
+          $a = [].concat($to_a(node)), (method_call = ($a[0] == null ? nil : $a[0])), (max_numparam = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), $a;
           return node.$updated(nil, [self.$process(method_call), max_numparam, self.$process(body)]);
-        }, $Processor_on_numblock$15.$$arity = 1);
+        }, 1);
         $alias(self, "on_while", "process_regular_node");
         $alias(self, "on_while_post", "process_regular_node");
         $alias(self, "on_until", "process_regular_node");
@@ -3630,44 +3253,42 @@ Opal.modules["parser/ast/processor"] = function(Opal) {
         $alias(self, "on_const_pattern", "process_regular_node");
         $alias(self, "on_find_pattern", "process_regular_node");
         
-        Opal.def(self, '$process_variable_node', $Processor_process_variable_node$16 = function $$process_variable_node(node) {
+        $def(self, '$process_variable_node', function $$process_variable_node(node) {
           var self = this;
 
           
-          self.$warn("" + "Parser::AST::Processor#process_variable_node is deprecated as a" + " public API and will be removed. Please use " + "Parser::AST::Processor#on_var instead.");
+          self.$warn("Parser::AST::Processor#process_variable_node is deprecated as a" + " public API and will be removed. Please use " + "Parser::AST::Processor#on_var instead.");
           return self.$on_var(node);
-        }, $Processor_process_variable_node$16.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$process_var_asgn_node', $Processor_process_var_asgn_node$17 = function $$process_var_asgn_node(node) {
+        $def(self, '$process_var_asgn_node', function $$process_var_asgn_node(node) {
           var self = this;
 
           
-          self.$warn("" + "Parser::AST::Processor#process_var_asgn_node is deprecated as a" + " public API and will be removed. Please use " + "Parser::AST::Processor#on_vasgn instead.");
+          self.$warn("Parser::AST::Processor#process_var_asgn_node is deprecated as a" + " public API and will be removed. Please use " + "Parser::AST::Processor#on_vasgn instead.");
           return self.$on_vasgn(node);
-        }, $Processor_process_var_asgn_node$17.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$process_argument_node', $Processor_process_argument_node$18 = function $$process_argument_node(node) {
+        $def(self, '$process_argument_node', function $$process_argument_node(node) {
           var self = this;
 
           
-          self.$warn("" + "Parser::AST::Processor#process_argument_node is deprecated as a" + " public API and will be removed. Please use " + "Parser::AST::Processor#on_argument instead.");
+          self.$warn("Parser::AST::Processor#process_argument_node is deprecated as a" + " public API and will be removed. Please use " + "Parser::AST::Processor#on_argument instead.");
           return self.$on_argument(node);
-        }, $Processor_process_argument_node$18.$$arity = 1);
-        return (Opal.def(self, '$on_empty_else', $Processor_on_empty_else$19 = function $$on_empty_else(node) {
-          var self = this;
-
+        }, 1);
+        return $def(self, '$on_empty_else', function $$on_empty_else(node) {
+          
           return node
-        }, $Processor_on_empty_else$19.$$arity = 1), nil) && 'on_empty_else';
-      })($nesting[0], $$$($$$('::', 'AST'), 'Processor'), $nesting)
+        }, 1);
+      })($nesting[0], $$$($$$('AST'), 'Processor'), $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/meta"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module;
+Opal.modules["parser/meta"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $const_set = Opal.const_set;
 
-  Opal.add_stubs(['$freeze', '$to_set']);
+  Opal.add_stubs('freeze,to_set');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -3678,28 +3299,15 @@ Opal.modules["parser/meta"] = function(Opal) {
 
       var $nesting = [self].concat($parent_nesting);
 
-      return Opal.const_set($nesting[0], 'NODE_TYPES', ["true", "false", "nil", "int", "float", "str", "dstr", "sym", "dsym", "xstr", "regopt", "regexp", "array", "splat", "pair", "kwsplat", "hash", "irange", "erange", "self", "lvar", "ivar", "cvar", "gvar", "const", "defined?", "lvasgn", "ivasgn", "cvasgn", "gvasgn", "casgn", "mlhs", "masgn", "op_asgn", "and_asgn", "ensure", "rescue", "arg_expr", "or_asgn", "back_ref", "nth_ref", "match_with_lvasgn", "match_current_line", "module", "class", "sclass", "def", "defs", "undef", "alias", "args", "cbase", "arg", "optarg", "restarg", "blockarg", "block_pass", "kwarg", "kwoptarg", "kwrestarg", "kwnilarg", "send", "csend", "super", "zsuper", "yield", "block", "and", "not", "or", "if", "when", "case", "while", "until", "while_post", "until_post", "for", "break", "next", "redo", "return", "resbody", "kwbegin", "begin", "retry", "preexe", "postexe", "iflipflop", "eflipflop", "shadowarg", "complex", "rational", "__FILE__", "__LINE__", "__ENCODING__", "ident", "lambda", "indexasgn", "index", "procarg0", "restarg_expr", "blockarg_expr", "objc_kwarg", "objc_restarg", "objc_varargs", "numargs", "numblock", "forward_args", "forwarded_args", "forward_arg", "case_match", "in_match", "in_pattern", "match_var", "pin", "match_alt", "match_as", "match_rest", "array_pattern", "match_with_trailing_comma", "array_pattern_with_tail", "hash_pattern", "const_pattern", "if_guard", "unless_guard", "match_nil_pattern", "empty_else", "find_pattern", "kwargs", "match_pattern_p", "match_pattern"].$to_set().$freeze())
+      return $const_set($nesting[0], 'NODE_TYPES', ["true", "false", "nil", "int", "float", "str", "dstr", "sym", "dsym", "xstr", "regopt", "regexp", "array", "splat", "pair", "kwsplat", "hash", "irange", "erange", "self", "lvar", "ivar", "cvar", "gvar", "const", "defined?", "lvasgn", "ivasgn", "cvasgn", "gvasgn", "casgn", "mlhs", "masgn", "op_asgn", "and_asgn", "ensure", "rescue", "arg_expr", "or_asgn", "back_ref", "nth_ref", "match_with_lvasgn", "match_current_line", "module", "class", "sclass", "def", "defs", "undef", "alias", "args", "cbase", "arg", "optarg", "restarg", "blockarg", "block_pass", "kwarg", "kwoptarg", "kwrestarg", "kwnilarg", "send", "csend", "super", "zsuper", "yield", "block", "and", "not", "or", "if", "when", "case", "while", "until", "while_post", "until_post", "for", "break", "next", "redo", "return", "resbody", "kwbegin", "begin", "retry", "preexe", "postexe", "iflipflop", "eflipflop", "shadowarg", "complex", "rational", "__FILE__", "__LINE__", "__ENCODING__", "ident", "lambda", "indexasgn", "index", "procarg0", "restarg_expr", "blockarg_expr", "objc_kwarg", "objc_restarg", "objc_varargs", "numargs", "numblock", "forward_args", "forwarded_args", "forward_arg", "case_match", "in_match", "in_pattern", "match_var", "pin", "match_alt", "match_as", "match_rest", "array_pattern", "match_with_trailing_comma", "array_pattern_with_tail", "hash_pattern", "const_pattern", "if_guard", "unless_guard", "match_nil_pattern", "empty_else", "find_pattern", "kwargs", "match_pattern_p", "match_pattern"].$to_set().$freeze())
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/buffer"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  function $rb_ge(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs >= rhs : lhs['$>='](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $enc = Opal.enc, $truthy = Opal.truthy, $gvars = Opal.gvars, $hash2 = Opal.hash2, $send = Opal.send, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["parser/source/buffer"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $const_set = Opal.const_set, $regexp = Opal.regexp, $enc = Opal.enc, $truthy = Opal.truthy, $gvars = Opal.gvars, $eqeq = Opal.eqeq, $neqeq = Opal.neqeq, $defs = Opal.defs, $hash2 = Opal.hash2, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $def = Opal.def, $not = Opal.not, $rb_plus = Opal.rb_plus, $rb_ge = Opal.rb_ge, $rb_lt = Opal.rb_lt, $send2 = Opal.send2, $find_super = Opal.find_super;
 
-  Opal.add_stubs(['$attr_reader', '$empty?', '$=~', '$start_with?', '$freeze', '$==', '$[]', '$nil?', '$!=', '$match', '$find', '$encoding', '$recognize_encoding', '$force_encoding', '$encode', '$to_s', '$source=', '$-', '$open', '$read', '$raise', '$frozen?', '$dup', '$reencode_string', '$class', '$valid_encoding?', '$name', '$raw_source=', '$gsub', '$!', '$ascii_only?', '$line_index_for_position', '$line_begins', '$+', '$to_a', '$lines', '$end_with?', '$<<', '$each', '$chomp!', '$fetch', '$source_lines', '$<', '$>=', '$size', '$new', '$source', '$source_range', '$private', '$index', '$bsearch', '$[]=', '$method_defined?', '$bsearch_index']);
+  Opal.add_stubs('attr_reader,empty?,=~,start_with?,freeze,==,[],!=,nil?,match,find,encoding,recognize_encoding,force_encoding,encode,to_s,source=,-,open,read,raise,frozen?,dup,reencode_string,class,valid_encoding?,name,raw_source=,gsub,!,ascii_only?,line_index_for_position,line_begins,+,to_a,lines,end_with?,<<,each,chomp!,fetch,source_lines,>=,size,<,new,source,source_range,private,index,bsearch,[]=,method_defined?,bsearch_index');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -3713,68 +3321,58 @@ Opal.modules["parser/source/buffer"] = function(Opal) {
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'Buffer');
 
-        var $nesting = [self].concat($parent_nesting), $Buffer_recognize_encoding$1, $Buffer_reencode_string$2, $Buffer_initialize$3, $Buffer_read$4, $Buffer_source$6, $Buffer_source$eq$7, $Buffer_raw_source$eq$8, $Buffer_slice$9, $Buffer_decompose_position$10, $Buffer_line_for_position$11, $Buffer_column_for_position$12, $Buffer_source_lines$13, $Buffer_source_line$15, $Buffer_line_range$16, $Buffer_source_range$17, $Buffer_last_line$18, $Buffer_freeze$19, $Buffer_inspect$20, $Buffer_line_begins$21, $Buffer_line_index_for_position$22, $Buffer_bsearch$23, $Buffer_bsearch$25;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.name = self.$$prototype.source = self.$$prototype.slice_source = self.$$prototype.first_line = self.$$prototype.lines = self.$$prototype.source_range = self.$$prototype.line_begins = self.$$prototype.line_index_for_position = self.$$prototype.line_range = nil;
+        $proto.name = $proto.source = $proto.slice_source = $proto.first_line = $proto.lines = $proto.source_range = $proto.line_begins = $proto.line_index_for_position = $proto.line_range = nil;
         
         self.$attr_reader("name", "first_line");
-        Opal.const_set($nesting[0], 'ENCODING_RE', Opal.regexp([$enc("[\\s#](en)?coding\\s*[:=]\\s*", "ASCII-8BIT"), $enc("(", "ASCII-8BIT"), $enc("", "ASCII-8BIT"), $enc("(utf8-mac)", "ASCII-8BIT"), $enc("|", "ASCII-8BIT"), $enc("", "ASCII-8BIT"), $enc("([A-Za-z0-9_-]+?)(-unix|-dos|-mac)", "ASCII-8BIT"), $enc("|", "ASCII-8BIT"), $enc("([A-Za-z0-9_-]+)", "ASCII-8BIT"), $enc(")", "ASCII-8BIT"), $enc("", "ASCII-8BIT")]));
-        Opal.defs(self, '$recognize_encoding', $Buffer_recognize_encoding$1 = function $$recognize_encoding(string) {
-          var $a, $b, self = this, first_line = nil, second_line = nil, encoding_line = nil, $ret_or_1 = nil, result = nil, $ret_or_2 = nil, $ret_or_3 = nil;
+        $const_set($nesting[0], 'ENCODING_RE', $regexp([$enc("[\\s#](en)?coding\\s*[:=]\\s*", "ASCII-8BIT"), $enc("(", "ASCII-8BIT"), $enc("", "ASCII-8BIT"), $enc("(utf8-mac)", "ASCII-8BIT"), $enc("|", "ASCII-8BIT"), $enc("", "ASCII-8BIT"), $enc("([A-Za-z0-9_-]+?)(-unix|-dos|-mac)", "ASCII-8BIT"), $enc("|", "ASCII-8BIT"), $enc("([A-Za-z0-9_-]+)", "ASCII-8BIT"), $enc(")", "ASCII-8BIT"), $enc("", "ASCII-8BIT")]));
+        $defs(self, '$recognize_encoding', function $$recognize_encoding(string) {
+          var $a, $b, first_line = nil, second_line = nil, encoding_line = nil, result = nil, $ret_or_1 = nil, $ret_or_2 = nil;
 
           
           if ($truthy(string['$empty?']())) {
-            return nil};
+            return nil
+          };
           string['$=~'](/^(.*)\n?(.*\n)?/);
           $a = [(($b = $gvars['~']) === nil ? nil : $b['$[]'](1)), (($b = $gvars['~']) === nil ? nil : $b['$[]'](2))], (first_line = $a[0]), (second_line = $a[1]), $a;
           if ($truthy(first_line['$start_with?']($enc("\xEF\xBB\xBF", "ASCII-8BIT").$freeze()))) {
-            return $$$($$($nesting, 'Encoding'), 'UTF_8')
-          } else if (first_line['$[]'](0, 2)['$==']($enc("#!", "ASCII-8BIT").$freeze())) {
+            return $$$($$('Encoding'), 'UTF_8')
+          } else if ($eqeq(first_line['$[]'](0, 2), $enc("#!", "ASCII-8BIT").$freeze())) {
             encoding_line = second_line
           } else {
             encoding_line = first_line
           };
-          if ($truthy((function() {if ($truthy(($ret_or_1 = encoding_line['$nil?']()))) {
-            return $ret_or_1
-          } else {
-            return encoding_line['$[]'](0)['$!=']($enc("#", "ASCII-8BIT"))
-          }; return nil; })())) {
-            return nil};
-          if ($truthy((result = $$($nesting, 'ENCODING_RE').$match(encoding_line)))) {
-            return $$($nesting, 'Encoding').$find((function() {if ($truthy(($ret_or_2 = (function() {if ($truthy(($ret_or_3 = result['$[]'](3)))) {
-              return $ret_or_3
-            } else {
-              return result['$[]'](4)
-            }; return nil; })()))) {
-              return $ret_or_2
-            } else {
-              return result['$[]'](6)
-            }; return nil; })())
+          if (($truthy(encoding_line['$nil?']()) || ($neqeq(encoding_line['$[]'](0), $enc("#", "ASCII-8BIT"))))) {
+            return nil
+          };
+          if ($truthy((result = $$('ENCODING_RE').$match(encoding_line)))) {
+            return $$('Encoding').$find(($truthy(($ret_or_1 = ($truthy(($ret_or_2 = result['$[]'](3))) ? ($ret_or_2) : (result['$[]'](4))))) ? ($ret_or_1) : (result['$[]'](6))))
           } else {
             return nil
           };
-        }, $Buffer_recognize_encoding$1.$$arity = 1);
-        Opal.defs(self, '$reencode_string', $Buffer_reencode_string$2 = function $$reencode_string(input) {
+        }, 1);
+        $defs(self, '$reencode_string', function $$reencode_string(input) {
           var self = this, original_encoding = nil, detected_encoding = nil;
 
           
           original_encoding = input.$encoding();
-          detected_encoding = self.$recognize_encoding(input.$force_encoding($$$($$($nesting, 'Encoding'), 'BINARY')));
+          detected_encoding = self.$recognize_encoding(input.$force_encoding($$$($$('Encoding'), 'BINARY')));
           if ($truthy(detected_encoding['$nil?']())) {
             return input.$force_encoding(original_encoding)
-          } else if (detected_encoding['$==']($$$($$($nesting, 'Encoding'), 'BINARY'))) {
+          } else if ($eqeq(detected_encoding, $$$($$('Encoding'), 'BINARY'))) {
             return input
           } else {
-            return input.$force_encoding(detected_encoding).$encode($$$($$($nesting, 'Encoding'), 'UTF_8'))
+            return input.$force_encoding(detected_encoding).$encode($$$($$('Encoding'), 'UTF_8'))
           };
-        }, $Buffer_reencode_string$2.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$initialize', $Buffer_initialize$3 = function $$initialize(name, $a, $b) {
+        $def(self, '$initialize', function $$initialize(name, $a, $b) {
           var $post_args, $kwargs, first_line, source, self = this, $writer = nil;
 
           
           
-          $post_args = Opal.slice.call(arguments, 1, arguments.length);
+          $post_args = Opal.slice.call(arguments, 1);
           
           $kwargs = Opal.extract_kwargs($post_args);
           
@@ -3784,18 +3382,11 @@ Opal.modules["parser/source/buffer"] = function(Opal) {
             throw Opal.ArgumentError.$new('expected kwargs');
           };
           
-          if ($post_args.length > 0) {
-            first_line = $post_args[0];
-            $post_args.splice(0, 1);
-          }
-          if (first_line == null) {
-            first_line = 1;
-          };
+          if ($post_args.length > 0) first_line = $post_args.shift();
+          if (first_line == null) first_line = 1;;
           
           source = $kwargs.$$smap["source"];
-          if (source == null) {
-            source = nil
-          };
+          if (source == null) source = nil;
           self.name = name.$to_s();
           self.source = nil;
           self.first_line = first_line;
@@ -3806,79 +3397,71 @@ Opal.modules["parser/source/buffer"] = function(Opal) {
           if ($truthy(source)) {
             
             $writer = [source];
-            $send(self, 'source=', Opal.to_a($writer));
+            $send(self, 'source=', $to_a($writer));
             return $writer[$rb_minus($writer["length"], 1)];
           } else {
             return nil
           };
-        }, $Buffer_initialize$3.$$arity = -2);
+        }, -2);
         
-        Opal.def(self, '$read', $Buffer_read$4 = function $$read() {
-          var $$5, self = this;
+        $def(self, '$read', function $$read() {
+          var self = this;
 
           
-          $send($$($nesting, 'File'), 'open', [self.name, $enc("rb", "ASCII-8BIT")], ($$5 = function(io){var self = $$5.$$s == null ? this : $$5.$$s, $writer = nil;
+          $send($$('File'), 'open', [self.name, $enc("rb", "ASCII-8BIT")], function $$1(io){var self = $$1.$$s == null ? this : $$1.$$s, $writer = nil;
 
             
             
-            if (io == null) {
-              io = nil;
-            };
+            if (io == null) io = nil;;
             $writer = [io.$read()];
-            $send(self, 'source=', Opal.to_a($writer));
-            return $writer[$rb_minus($writer["length"], 1)];}, $$5.$$s = self, $$5.$$arity = 1, $$5));
+            $send(self, 'source=', $to_a($writer));
+            return $writer[$rb_minus($writer["length"], 1)];}, {$$arity: 1, $$s: self});
           return self;
-        }, $Buffer_read$4.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$source', $Buffer_source$6 = function $$source() {
+        $def(self, '$source', function $$source() {
           var self = this;
 
           
           if ($truthy(self.source['$nil?']())) {
-            self.$raise($$($nesting, 'RuntimeError'), $enc("Cannot extract source from uninitialized Source::Buffer", "ASCII-8BIT"))};
+            self.$raise($$('RuntimeError'), $enc("Cannot extract source from uninitialized Source::Buffer", "ASCII-8BIT"))
+          };
           return self.source;
-        }, $Buffer_source$6.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$source=', $Buffer_source$eq$7 = function(input) {
+        $def(self, '$source=', function $Buffer_source$eq$2(input) {
           var self = this, $writer = nil;
 
           
           if ($truthy(input['$frozen?']())) {
-            input = input.$dup()};
+            input = input.$dup()
+          };
           input = self.$class().$reencode_string(input);
-          if ($truthy(input['$valid_encoding?']())) {
-          } else {
-            self.$raise($$($nesting, 'EncodingError'), "" + "invalid byte sequence in " + (input.$encoding().$name()))
+          if (!$truthy(input['$valid_encoding?']())) {
+            self.$raise($$('EncodingError'), $enc("invalid byte sequence in ", "ASCII-8BIT") + (input.$encoding().$name()))
           };
           
           $writer = [input];
-          $send(self, 'raw_source=', Opal.to_a($writer));
+          $send(self, 'raw_source=', $to_a($writer));
           return $writer[$rb_minus($writer["length"], 1)];;
-        }, $Buffer_source$eq$7.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$raw_source=', $Buffer_raw_source$eq$8 = function(input) {
-          var self = this, $ret_or_4 = nil, $ret_or_5 = nil;
+        $def(self, '$raw_source=', function $Buffer_raw_source$eq$3(input) {
+          var self = this;
 
           
           if ($truthy(self.source)) {
-            self.$raise($$($nesting, 'ArgumentError'), $enc("Source::Buffer is immutable", "ASCII-8BIT"))};
+            self.$raise($$('ArgumentError'), $enc("Source::Buffer is immutable", "ASCII-8BIT"))
+          };
           self.source = input.$gsub($enc("\r\n", "ASCII-8BIT").$freeze(), $enc("\n", "ASCII-8BIT").$freeze()).$freeze();
-          if ($truthy((function() {if ($truthy(($ret_or_4 = (function() {if ($truthy(($ret_or_5 = self.source['$ascii_only?']()['$!']()))) {
-            return self.source.$encoding()['$!=']($$$($$($nesting, 'Encoding'), 'UTF_32LE'))
-          } else {
-            return $ret_or_5
-          }; return nil; })()))) {
-            return self.source.$encoding()['$!=']($$$($$($nesting, 'Encoding'), 'BINARY'))
-          } else {
-            return $ret_or_4
-          }; return nil; })())) {
-            return (self.slice_source = self.source.$encode($$$($$($nesting, 'Encoding'), 'UTF_32LE')))
+          if ((($not(self.source['$ascii_only?']()) && ($neqeq(self.source.$encoding(), $$$($$('Encoding'), 'UTF_32LE')))) && ($neqeq(self.source.$encoding(), $$$($$('Encoding'), 'BINARY'))))) {
+            return (self.slice_source = self.source.$encode($$$($$('Encoding'), 'UTF_32LE')))
           } else {
             return nil
           };
-        }, $Buffer_raw_source$eq$8.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$slice', $Buffer_slice$9 = function $$slice(range) {
+        $def(self, '$slice', function $$slice(range) {
           var self = this;
 
           if ($truthy(self.slice_source['$nil?']())) {
@@ -3886,217 +3469,162 @@ Opal.modules["parser/source/buffer"] = function(Opal) {
           } else {
             return self.slice_source['$[]'](range).$encode(self.source.$encoding())
           }
-        }, $Buffer_slice$9.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$decompose_position', $Buffer_decompose_position$10 = function $$decompose_position(position) {
+        $def(self, '$decompose_position', function $$decompose_position(position) {
           var self = this, line_index = nil, line_begin = nil;
 
           
           line_index = self.$line_index_for_position(position);
           line_begin = self.$line_begins()['$[]'](line_index);
           return [$rb_plus(self.first_line, line_index), $rb_minus(position, line_begin)];
-        }, $Buffer_decompose_position$10.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$line_for_position', $Buffer_line_for_position$11 = function $$line_for_position(position) {
+        $def(self, '$line_for_position', function $$line_for_position(position) {
           var self = this;
 
           return $rb_plus(self.$line_index_for_position(position), self.first_line)
-        }, $Buffer_line_for_position$11.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$column_for_position', $Buffer_column_for_position$12 = function $$column_for_position(position) {
+        $def(self, '$column_for_position', function $$column_for_position(position) {
           var self = this, line_index = nil;
 
           
           line_index = self.$line_index_for_position(position);
           return $rb_minus(position, self.$line_begins()['$[]'](line_index));
-        }, $Buffer_column_for_position$12.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$source_lines', $Buffer_source_lines$13 = function $$source_lines() {
-          var $$14, self = this, $ret_or_6 = nil, lines = nil;
+        $def(self, '$source_lines', function $$source_lines() {
+          var self = this, $ret_or_1 = nil, lines = nil;
 
-          return (self.lines = (function() {if ($truthy(($ret_or_6 = self.lines))) {
-            return $ret_or_6
-          } else {
+          return (self.lines = ($truthy(($ret_or_1 = self.lines)) ? ($ret_or_1) : (((lines = self.source.$lines().$to_a()), ($truthy(self.source['$end_with?']($enc("\n", "ASCII-8BIT").$freeze())) ? (lines['$<<']($enc("", "ASCII-8BIT").$dup())) : nil), $send(lines, 'each', [], function $$4(line){
             
-            lines = self.source.$lines().$to_a();
-            if ($truthy(self.source['$end_with?']($enc("\n", "ASCII-8BIT").$freeze()))) {
-              lines['$<<']($enc("", "ASCII-8BIT").$dup())};
-            $send(lines, 'each', [], ($$14 = function(line){var self = $$14.$$s == null ? this : $$14.$$s;
-
-              
-              
-              if (line == null) {
-                line = nil;
-              };
-              line['$chomp!']($enc("\n", "ASCII-8BIT").$freeze());
-              return line.$freeze();}, $$14.$$s = self, $$14.$$arity = 1, $$14));
-            return lines.$freeze();
-          }; return nil; })())
-        }, $Buffer_source_lines$13.$$arity = 0);
+            
+            if (line == null) line = nil;;
+            line['$chomp!']($enc("\n", "ASCII-8BIT").$freeze());
+            return line.$freeze();}, 1), lines.$freeze()))))
+        }, 0);
         
-        Opal.def(self, '$source_line', $Buffer_source_line$15 = function $$source_line(lineno) {
+        $def(self, '$source_line', function $$source_line(lineno) {
           var self = this;
 
           return self.$source_lines().$fetch($rb_minus(lineno, self.first_line)).$dup()
-        }, $Buffer_source_line$15.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$line_range', $Buffer_line_range$16 = function $$line_range(lineno) {
-          var self = this, index = nil, $ret_or_7 = nil;
+        $def(self, '$line_range', function $$line_range(lineno) {
+          var self = this, index = nil;
 
           
           index = $rb_minus(lineno, self.first_line);
-          if ($truthy((function() {if ($truthy(($ret_or_7 = $rb_lt(index, 0)))) {
-            return $ret_or_7
+          if (($truthy($rb_lt(index, 0)) || ($truthy($rb_ge($rb_plus(index, 1), self.$line_begins().$size()))))) {
+            return self.$raise($$('IndexError'), $enc("Parser::Source::Buffer: range for line ", "ASCII-8BIT") + ("" + (lineno) + $enc(" requested, valid line numbers are ", "ASCII-8BIT") + (self.first_line) + $enc("..", "ASCII-8BIT")) + ("" + ($rb_minus($rb_plus(self.first_line, self.$line_begins().$size()), 2))))
           } else {
-            return $rb_ge($rb_plus(index, 1), self.$line_begins().$size())
-          }; return nil; })())) {
-            return self.$raise($$($nesting, 'IndexError'), "" + "Parser::Source::Buffer: range for line " + ("" + (lineno) + " requested, valid line numbers are " + (self.first_line) + "..") + ("" + ($rb_minus($rb_plus(self.first_line, self.$line_begins().$size()), 2))))
-          } else {
-            return $$($nesting, 'Range').$new(self, self.$line_begins()['$[]'](index), $rb_minus(self.$line_begins()['$[]']($rb_plus(index, 1)), 1))
+            return $$('Range').$new(self, self.$line_begins()['$[]'](index), $rb_minus(self.$line_begins()['$[]']($rb_plus(index, 1)), 1))
           };
-        }, $Buffer_line_range$16.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$source_range', $Buffer_source_range$17 = function $$source_range() {
-          var self = this, $ret_or_8 = nil;
+        $def(self, '$source_range', function $$source_range() {
+          var self = this, $ret_or_1 = nil;
 
-          return (self.source_range = (function() {if ($truthy(($ret_or_8 = self.source_range))) {
-            return $ret_or_8
-          } else {
-            return $$($nesting, 'Range').$new(self, 0, self.$source().$size())
-          }; return nil; })())
-        }, $Buffer_source_range$17.$$arity = 0);
+          return (self.source_range = ($truthy(($ret_or_1 = self.source_range)) ? ($ret_or_1) : ($$('Range').$new(self, 0, self.$source().$size()))))
+        }, 0);
         
-        Opal.def(self, '$last_line', $Buffer_last_line$18 = function $$last_line() {
+        $def(self, '$last_line', function $$last_line() {
           var self = this;
 
           return $rb_minus($rb_plus(self.$line_begins().$size(), self.first_line), 2)
-        }, $Buffer_last_line$18.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$freeze', $Buffer_freeze$19 = function $$freeze() {
-          var $iter = $Buffer_freeze$19.$$p, $yield = $iter || nil, self = this, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        $def(self, '$freeze', function $$freeze() {
+          var $yield = $$freeze.$$p || nil, self = this;
 
-          if ($iter) $Buffer_freeze$19.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$freeze.$$p;
           
           self.$source_lines();
           self.$line_begins();
           self.$source_range();
-          return $send2(self, $find_super(self, 'freeze', $Buffer_freeze$19, false, true), 'freeze', $zuper, $iter);
-        }, $Buffer_freeze$19.$$arity = 0);
+          return $send2(self, $find_super(self, 'freeze', $$freeze, false, true), 'freeze', [], $yield);
+        }, 0);
         
-        Opal.def(self, '$inspect', $Buffer_inspect$20 = function $$inspect() {
+        $def(self, '$inspect', function $$inspect() {
           var self = this;
 
-          return "" + "#<" + (self.$class()) + " " + (self.$name()) + ">"
-        }, $Buffer_inspect$20.$$arity = 0);
+          return $enc("#<", "ASCII-8BIT") + (self.$class()) + $enc(" ", "ASCII-8BIT") + (self.$name()) + $enc(">", "ASCII-8BIT")
+        }, 0);
         self.$private();
         
-        Opal.def(self, '$line_begins', $Buffer_line_begins$21 = function $$line_begins() {
-          var $a, self = this, $ret_or_9 = nil, begins = nil, index = nil;
+        $def(self, '$line_begins', function $$line_begins() {
+          var $a, self = this, $ret_or_1 = nil, begins = nil, index = nil;
 
-          return (self.line_begins = (function() {if ($truthy(($ret_or_9 = self.line_begins))) {
-            return $ret_or_9
-          } else {
+          return (self.line_begins = ($truthy(($ret_or_1 = self.line_begins)) ? ($ret_or_1) : ((function() {
+          (begins = [0]);
+          (index = 0);
+          (function() {while ($truthy((index = self.source.$index($enc("\n", "ASCII-8BIT").$freeze(), index)))) {
             
-            begins = [0];
-            index = 0;
-            while ($truthy((index = self.source.$index($enc("\n", "ASCII-8BIT").$freeze(), index)))) {
-              
-              index = $rb_plus(index, 1);
-              begins['$<<'](index);
-            };
-            begins['$<<']($rb_plus(self.source.$size(), 1));
-            return begins;
-          }; return nil; })())
-        }, $Buffer_line_begins$21.$$arity = 0);
+            index = $rb_plus(index, 1);
+            begins['$<<'](index);
+          }; return nil; })();
+          begins['$<<']($rb_plus(self.source.$size(), 1));
+          return begins;})())))
+        }, 0);
         
-        Opal.def(self, '$line_index_for_position', $Buffer_line_index_for_position$22 = function $$line_index_for_position(position) {
-          var self = this, $ret_or_10 = nil, index = nil, $writer = nil;
+        $def(self, '$line_index_for_position', function $$line_index_for_position(position) {
+          var self = this, $ret_or_1 = nil, index = nil, $writer = nil;
 
-          if ($truthy(($ret_or_10 = self.line_index_for_position['$[]'](position)))) {
-            return $ret_or_10
+          if ($truthy(($ret_or_1 = self.line_index_for_position['$[]'](position)))) {
+            return $ret_or_1
           } else {
             
             index = $rb_minus(self.$bsearch(self.$line_begins(), position), 1);
-            if ($truthy(self.line_index_for_position['$frozen?']())) {
-            } else {
+            if (!$truthy(self.line_index_for_position['$frozen?']())) {
               
               $writer = [position, index];
-              $send(self.line_index_for_position, '[]=', Opal.to_a($writer));
+              $send(self.line_index_for_position, '[]=', $to_a($writer));
               $writer[$rb_minus($writer["length"], 1)];
             };
             return index;
           }
-        }, $Buffer_line_index_for_position$22.$$arity = 1);
-        if ($truthy($$($nesting, 'Array')['$method_defined?']("bsearch_index"))) {
-          return (Opal.def(self, '$bsearch', $Buffer_bsearch$23 = function $$bsearch(line_begins, position) {
-            var $$24, self = this, $ret_or_11 = nil;
-
-            if ($truthy(($ret_or_11 = $send(line_begins, 'bsearch_index', [], ($$24 = function(line_begin){var self = $$24.$$s == null ? this : $$24.$$s;
+        }, 1);
+        if ($truthy($$('Array')['$method_defined?']("bsearch_index"))) {
+          return $def(self, '$bsearch', function $$bsearch(line_begins, position) {
+            var $ret_or_1 = nil;
 
+            if ($truthy(($ret_or_1 = $send(line_begins, 'bsearch_index', [], function $$5(line_begin){
               
               
-              if (line_begin == null) {
-                line_begin = nil;
-              };
-              return $rb_lt(position, line_begin);}, $$24.$$s = self, $$24.$$arity = 1, $$24))))) {
-              return $ret_or_11
+              if (line_begin == null) line_begin = nil;;
+              return $rb_lt(position, line_begin);}, 1)))) {
+              return $ret_or_1
             } else {
               return $rb_minus(line_begins.$size(), 1)
             }
-          }, $Buffer_bsearch$23.$$arity = 2), nil) && 'bsearch'
+          }, 2)
         } else {
-          return (Opal.def(self, '$bsearch', $Buffer_bsearch$25 = function $$bsearch(line_begins, position) {
-            var $$26, self = this, $ret_or_12 = nil, $ret_or_13 = nil;
+          return $def(self, '$bsearch', function $$bsearch(line_begins, position) {
+            var self = this, $ret_or_1 = nil;
 
             
-            self.line_range = (function() {if ($truthy(($ret_or_12 = self.line_range))) {
-              return $ret_or_12
-            } else {
-              return Opal.Range.$new(0,line_begins.$size(), true)
-            }; return nil; })();
-            if ($truthy(($ret_or_13 = $send(self.line_range, 'bsearch', [], ($$26 = function(i){var self = $$26.$$s == null ? this : $$26.$$s;
-
+            self.line_range = ($truthy(($ret_or_1 = self.line_range)) ? ($ret_or_1) : (Opal.Range.$new(0,line_begins.$size(), true)));
+            if ($truthy(($ret_or_1 = $send(self.line_range, 'bsearch', [], function $$6(i){
               
               
-              if (i == null) {
-                i = nil;
-              };
-              return $rb_lt(position, line_begins['$[]'](i));}, $$26.$$s = self, $$26.$$arity = 1, $$26))))) {
-              return $ret_or_13
+              if (i == null) i = nil;;
+              return $rb_lt(position, line_begins['$[]'](i));}, 1)))) {
+              return $ret_or_1
             } else {
               return $rb_minus(line_begins.$size(), 1)
             };
-          }, $Buffer_bsearch$25.$$arity = 2), nil) && 'bsearch'
+          }, 2)
         };
       })($nesting[0], null, $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/range"] = function(Opal) {
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_ge(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs >= rhs : lhs['$>='](rhs);
-  }
-  function $rb_times(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs * rhs : lhs['$*'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $hash2 = Opal.hash2, $alias = Opal.alias;
+Opal.modules["parser/source/range"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $rb_lt = Opal.rb_lt, $def = Opal.def, $hash2 = Opal.hash2, $rb_minus = Opal.rb_minus, $alias = Opal.alias, $neqeq = Opal.neqeq, $to_ary = Opal.to_ary, $rb_plus = Opal.rb_plus, $rb_ge = Opal.rb_ge, $rb_times = Opal.rb_times, $eqeq = Opal.eqeq;
 
-  Opal.add_stubs(['$include', '$attr_reader', '$<', '$raise', '$nil?', '$freeze', '$with', '$-', '$line_for_position', '$alias_method', '$column_for_position', '$!=', '$line', '$last_line', '$inspect', '$column', '$last_column', '$source_line', '$slice', '$begin_pos', '$end_pos', '$include?', '$source', '$to_a', '$decompose_position', '$join', '$name', '$+', '$new', '$min', '$max', '$disjoint?', '$empty?', '$>=', '$!', '$<=>', '$contains?', '$overlaps?', '$==', '$*', '$is_a?', '$source_buffer', '$nonzero?', '$hash']);
+  Opal.add_stubs('include,attr_reader,<,raise,nil?,freeze,with,-,line_for_position,alias_method,column_for_position,!=,line,last_line,inspect,column,last_column,source_line,slice,begin_pos,end_pos,include?,source,to_a,decompose_position,join,name,+,new,min,max,disjoint?,empty?,>=,!,<=>,contains?,overlaps?,==,*,source_buffer,is_a?,nonzero?,hash');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -4110,124 +3638,127 @@ Opal.modules["parser/source/range"] = function(Opal) {
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'Range');
 
-        var $nesting = [self].concat($parent_nesting), $Range_initialize$1, $Range_begin$2, $Range_end$3, $Range_size$4, $Range_line$5, $Range_column$6, $Range_last_line$7, $Range_last_column$8, $Range_column_range$9, $Range_source_line$10, $Range_source$11, $Range_is$ques$12, $Range_to_a$13, $Range_to_range$14, $Range_to_s$15, $Range_with$16, $Range_adjust$17, $Range_resize$18, $Range_join$19, $Range_intersect$20, $Range_disjoint$ques$21, $Range_overlaps$ques$22, $Range_contains$ques$23, $Range_contained$ques$24, $Range_crossing$ques$25, $Range_empty$ques$26, $Range_$lt_eq_gt$27, $Range_hash$28, $Range_inspect$29;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.begin_pos = self.$$prototype.end_pos = self.$$prototype.source_buffer = nil;
+        $proto.begin_pos = $proto.end_pos = $proto.source_buffer = nil;
         
-        self.$include($$($nesting, 'Comparable'));
+        self.$include($$('Comparable'));
         self.$attr_reader("source_buffer");
         self.$attr_reader("begin_pos", "end_pos");
         
-        Opal.def(self, '$initialize', $Range_initialize$1 = function $$initialize(source_buffer, begin_pos, end_pos) {
+        $def(self, '$initialize', function $$initialize(source_buffer, begin_pos, end_pos) {
           var $a, self = this;
 
           
           if ($truthy($rb_lt(end_pos, begin_pos))) {
-            self.$raise($$($nesting, 'ArgumentError'), "Parser::Source::Range: end_pos must not be less than begin_pos")};
+            self.$raise($$('ArgumentError'), "Parser::Source::Range: end_pos must not be less than begin_pos")
+          };
           if ($truthy(source_buffer['$nil?']())) {
-            self.$raise($$($nesting, 'ArgumentError'), "Parser::Source::Range: source_buffer must not be nil")};
+            self.$raise($$('ArgumentError'), "Parser::Source::Range: source_buffer must not be nil")
+          };
           self.source_buffer = source_buffer;
           $a = [begin_pos, end_pos], (self.begin_pos = $a[0]), (self.end_pos = $a[1]), $a;
           return self.$freeze();
-        }, $Range_initialize$1.$$arity = 3);
+        }, 3);
         
-        Opal.def(self, '$begin', $Range_begin$2 = function $$begin() {
+        $def(self, '$begin', function $$begin() {
           var self = this;
 
           return self.$with($hash2(["end_pos"], {"end_pos": self.begin_pos}))
-        }, $Range_begin$2.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$end', $Range_end$3 = function $$end() {
+        $def(self, '$end', function $$end() {
           var self = this;
 
           return self.$with($hash2(["begin_pos"], {"begin_pos": self.end_pos}))
-        }, $Range_end$3.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$size', $Range_size$4 = function $$size() {
+        $def(self, '$size', function $$size() {
           var self = this;
 
           return $rb_minus(self.end_pos, self.begin_pos)
-        }, $Range_size$4.$$arity = 0);
+        }, 0);
         $alias(self, "length", "size");
         
-        Opal.def(self, '$line', $Range_line$5 = function $$line() {
+        $def(self, '$line', function $$line() {
           var self = this;
 
           return self.source_buffer.$line_for_position(self.begin_pos)
-        }, $Range_line$5.$$arity = 0);
+        }, 0);
         self.$alias_method("first_line", "line");
         
-        Opal.def(self, '$column', $Range_column$6 = function $$column() {
+        $def(self, '$column', function $$column() {
           var self = this;
 
           return self.source_buffer.$column_for_position(self.begin_pos)
-        }, $Range_column$6.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$last_line', $Range_last_line$7 = function $$last_line() {
+        $def(self, '$last_line', function $$last_line() {
           var self = this;
 
           return self.source_buffer.$line_for_position(self.end_pos)
-        }, $Range_last_line$7.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$last_column', $Range_last_column$8 = function $$last_column() {
+        $def(self, '$last_column', function $$last_column() {
           var self = this;
 
           return self.source_buffer.$column_for_position(self.end_pos)
-        }, $Range_last_column$8.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$column_range', $Range_column_range$9 = function $$column_range() {
+        $def(self, '$column_range', function $$column_range() {
           var self = this;
 
           
-          if ($truthy(self.$line()['$!='](self.$last_line()))) {
-            self.$raise($$($nesting, 'RangeError'), "" + (self.$inspect()) + " spans more than one line")};
+          if ($neqeq(self.$line(), self.$last_line())) {
+            self.$raise($$('RangeError'), "" + (self.$inspect()) + " spans more than one line")
+          };
           return Opal.Range.$new(self.$column(),self.$last_column(), true);
-        }, $Range_column_range$9.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$source_line', $Range_source_line$10 = function $$source_line() {
+        $def(self, '$source_line', function $$source_line() {
           var self = this;
 
           return self.source_buffer.$source_line(self.$line())
-        }, $Range_source_line$10.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$source', $Range_source$11 = function $$source() {
+        $def(self, '$source', function $$source() {
           var self = this;
 
           return self.source_buffer.$slice(Opal.Range.$new(self.$begin_pos(),self.$end_pos(), true))
-        }, $Range_source$11.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$is?', $Range_is$ques$12 = function($a) {
+        $def(self, '$is?', function $Range_is$ques$1($a) {
           var $post_args, what, self = this;
 
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
           what = $post_args;;
           return what['$include?'](self.$source());
-        }, $Range_is$ques$12.$$arity = -1);
+        }, -1);
         
-        Opal.def(self, '$to_a', $Range_to_a$13 = function $$to_a() {
+        $def(self, '$to_a', function $$to_a() {
           var self = this;
 
           return Opal.Range.$new(self.begin_pos,self.end_pos, true).$to_a()
-        }, $Range_to_a$13.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$to_range', $Range_to_range$14 = function $$to_range() {
+        $def(self, '$to_range', function $$to_range() {
           var self = this;
 
           return Opal.Range.$new(self.$begin_pos(),self.$end_pos(), true)
-        }, $Range_to_range$14.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$to_s', $Range_to_s$15 = function $$to_s() {
+        $def(self, '$to_s', function $$to_s() {
           var $a, $b, self = this, line = nil, column = nil;
 
           
-          $b = self.source_buffer.$decompose_position(self.begin_pos), $a = Opal.to_ary($b), (line = ($a[0] == null ? nil : $a[0])), (column = ($a[1] == null ? nil : $a[1])), $b;
+          $b = self.source_buffer.$decompose_position(self.begin_pos), $a = $to_ary($b), (line = ($a[0] == null ? nil : $a[0])), (column = ($a[1] == null ? nil : $a[1])), $b;
           return [self.source_buffer.$name(), line, $rb_plus(column, 1)].$join(":");
-        }, $Range_to_s$15.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$with', $Range_with$16 = function($kwargs) {
+        $def(self, '$with', function $Range_with$2($kwargs) {
           var begin_pos, end_pos, self = this;
 
           
@@ -4239,18 +3770,14 @@ Opal.modules["parser/source/range"] = function(Opal) {
           };
           
           begin_pos = $kwargs.$$smap["begin_pos"];
-          if (begin_pos == null) {
-            begin_pos = self.begin_pos
-          };
+          if (begin_pos == null) begin_pos = self.begin_pos;
           
           end_pos = $kwargs.$$smap["end_pos"];
-          if (end_pos == null) {
-            end_pos = self.end_pos
-          };
-          return $$($nesting, 'Range').$new(self.source_buffer, begin_pos, end_pos);
-        }, $Range_with$16.$$arity = -1);
+          if (end_pos == null) end_pos = self.end_pos;
+          return $$('Range').$new(self.source_buffer, begin_pos, end_pos);
+        }, -1);
         
-        Opal.def(self, '$adjust', $Range_adjust$17 = function $$adjust($kwargs) {
+        $def(self, '$adjust', function $$adjust($kwargs) {
           var begin_pos, end_pos, self = this;
 
           
@@ -4262,135 +3789,116 @@ Opal.modules["parser/source/range"] = function(Opal) {
           };
           
           begin_pos = $kwargs.$$smap["begin_pos"];
-          if (begin_pos == null) {
-            begin_pos = 0
-          };
+          if (begin_pos == null) begin_pos = 0;
           
           end_pos = $kwargs.$$smap["end_pos"];
-          if (end_pos == null) {
-            end_pos = 0
-          };
-          return $$($nesting, 'Range').$new(self.source_buffer, $rb_plus(self.begin_pos, begin_pos), $rb_plus(self.end_pos, end_pos));
-        }, $Range_adjust$17.$$arity = -1);
+          if (end_pos == null) end_pos = 0;
+          return $$('Range').$new(self.source_buffer, $rb_plus(self.begin_pos, begin_pos), $rb_plus(self.end_pos, end_pos));
+        }, -1);
         
-        Opal.def(self, '$resize', $Range_resize$18 = function $$resize(new_size) {
+        $def(self, '$resize', function $$resize(new_size) {
           var self = this;
 
           return self.$with($hash2(["end_pos"], {"end_pos": $rb_plus(self.begin_pos, new_size)}))
-        }, $Range_resize$18.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$join', $Range_join$19 = function $$join(other) {
+        $def(self, '$join', function $$join(other) {
           var self = this;
 
-          return $$($nesting, 'Range').$new(self.source_buffer, [self.begin_pos, other.$begin_pos()].$min(), [self.end_pos, other.$end_pos()].$max())
-        }, $Range_join$19.$$arity = 1);
+          return $$('Range').$new(self.source_buffer, [self.begin_pos, other.$begin_pos()].$min(), [self.end_pos, other.$end_pos()].$max())
+        }, 1);
         
-        Opal.def(self, '$intersect', $Range_intersect$20 = function $$intersect(other) {
+        $def(self, '$intersect', function $$intersect(other) {
           var self = this;
 
           if ($truthy(self['$disjoint?'](other))) {
             return nil
           } else {
-            return $$($nesting, 'Range').$new(self.source_buffer, [self.begin_pos, other.$begin_pos()].$max(), [self.end_pos, other.$end_pos()].$min())
+            return $$('Range').$new(self.source_buffer, [self.begin_pos, other.$begin_pos()].$max(), [self.end_pos, other.$end_pos()].$min())
           }
-        }, $Range_intersect$20.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$disjoint?', $Range_disjoint$ques$21 = function(other) {
-          var self = this, $ret_or_1 = nil, $ret_or_2 = nil;
+        $def(self, '$disjoint?', function $Range_disjoint$ques$3(other) {
+          var self = this, $ret_or_1 = nil;
 
-          if ($truthy((function() {if ($truthy(($ret_or_1 = self['$empty?']()))) {
-            return other['$empty?']()
-          } else {
-            return $ret_or_1
-          }; return nil; })())) {
+          if (($truthy(self['$empty?']()) && ($truthy(other['$empty?']())))) {
             return self.begin_pos['$!='](other.$begin_pos())
-          } else if ($truthy(($ret_or_2 = $rb_ge(self.begin_pos, other.$end_pos())))) {
-            return $ret_or_2
+          } else if ($truthy(($ret_or_1 = $rb_ge(self.begin_pos, other.$end_pos())))) {
+            return $ret_or_1
           } else {
             return $rb_ge(other.$begin_pos(), self.end_pos)
           }
-        }, $Range_disjoint$ques$21.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$overlaps?', $Range_overlaps$ques$22 = function(other) {
+        $def(self, '$overlaps?', function $Range_overlaps$ques$4(other) {
           var self = this;
 
           return self['$disjoint?'](other)['$!']()
-        }, $Range_overlaps$ques$22.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$contains?', $Range_contains$ques$23 = function(other) {
+        $def(self, '$contains?', function $Range_contains$ques$5(other) {
           var self = this;
 
-          return $rb_ge($rb_plus(other.$begin_pos()['$<=>'](self.begin_pos), self.end_pos['$<=>'](other.$end_pos())), (function() {if ($truthy(other['$empty?']())) {
-            return 2
-          } else {
-            return 1
-          }; return nil; })())
-        }, $Range_contains$ques$23.$$arity = 1);
+          return $rb_ge($rb_plus(other.$begin_pos()['$<=>'](self.begin_pos), self.end_pos['$<=>'](other.$end_pos())), ($truthy(other['$empty?']()) ? (2) : (1)))
+        }, 1);
         
-        Opal.def(self, '$contained?', $Range_contained$ques$24 = function(other) {
+        $def(self, '$contained?', function $Range_contained$ques$6(other) {
           var self = this;
 
           return other['$contains?'](self)
-        }, $Range_contained$ques$24.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$crossing?', $Range_crossing$ques$25 = function(other) {
+        $def(self, '$crossing?', function $Range_crossing$ques$7(other) {
           var self = this;
 
           
-          if ($truthy(self['$overlaps?'](other))) {
-          } else {
+          if (!$truthy(self['$overlaps?'](other))) {
             return false
           };
           return $rb_times(self.begin_pos['$<=>'](other.$begin_pos()), self.end_pos['$<=>'](other.$end_pos()))['$=='](1);
-        }, $Range_crossing$ques$25.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$empty?', $Range_empty$ques$26 = function() {
+        $def(self, '$empty?', function $Range_empty$ques$8() {
           var self = this;
 
           return self.begin_pos['$=='](self.end_pos)
-        }, $Range_empty$ques$26.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$<=>', $Range_$lt_eq_gt$27 = function(other) {
-          var self = this, $ret_or_3 = nil, $ret_or_4 = nil;
+        $def(self, '$<=>', function $Range_$lt_eq_gt$9(other) {
+          var self = this, $ret_or_1 = nil;
 
           
-          if ($truthy((function() {if ($truthy(($ret_or_3 = other['$is_a?']($$$($$$($$$('::', 'Parser'), 'Source'), 'Range'))))) {
-            return self.source_buffer['$=='](other.$source_buffer())
-          } else {
-            return $ret_or_3
-          }; return nil; })())) {
-          } else {
+          if (!($truthy(other['$is_a?']($$$($$$($$$('Parser'), 'Source'), 'Range'))) && ($eqeq(self.source_buffer, other.$source_buffer())))) {
             return nil
           };
-          if ($truthy(($ret_or_4 = self.begin_pos['$<=>'](other.$begin_pos())['$nonzero?']()))) {
-            return $ret_or_4
+          if ($truthy(($ret_or_1 = self.begin_pos['$<=>'](other.$begin_pos())['$nonzero?']()))) {
+            return $ret_or_1
           } else {
             
             return self.end_pos['$<=>'](other.$end_pos());
           };
-        }, $Range_$lt_eq_gt$27.$$arity = 1);
+        }, 1);
         self.$alias_method("eql?", "==");
         
-        Opal.def(self, '$hash', $Range_hash$28 = function $$hash() {
+        $def(self, '$hash', function $$hash() {
           var self = this;
 
           return [self.source_buffer, self.begin_pos, self.end_pos].$hash()
-        }, $Range_hash$28.$$arity = 0);
-        return (Opal.def(self, '$inspect', $Range_inspect$29 = function $$inspect() {
+        }, 0);
+        return $def(self, '$inspect', function $$inspect() {
           var self = this;
 
-          return "" + "#<Parser::Source::Range " + (self.source_buffer.$name()) + " " + (self.begin_pos) + "..." + (self.end_pos) + ">"
-        }, $Range_inspect$29.$$arity = 0), nil) && 'inspect';
+          return "#<Parser::Source::Range " + (self.source_buffer.$name()) + " " + (self.begin_pos) + "..." + (self.end_pos) + ">"
+        }, 0);
       })($nesting[0], null, $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/comment"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy;
+Opal.modules["parser/source/comment"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $defs = Opal.defs, $def = Opal.def, $truthy = Opal.truthy;
 
-  Opal.add_stubs(['$attr_reader', '$alias_method', '$new', '$associate', '$associate_locations', '$associate_by_identity', '$freeze', '$source', '$start_with?', '$text', '$==', '$type', '$is_a?', '$location', '$to_s', '$expression', '$inspect']);
+  Opal.add_stubs('attr_reader,alias_method,new,associate,associate_locations,associate_by_identity,freeze,source,start_with?,text,==,type,is_a?,location,to_s,expression,inspect');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -4404,45 +3912,45 @@ Opal.modules["parser/source/comment"] = function(Opal) {
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'Comment');
 
-        var $nesting = [self].concat($parent_nesting), $Comment_associate$1, $Comment_associate_locations$2, $Comment_associate_by_identity$3, $Comment_initialize$4, $Comment_type$5, $Comment_inline$ques$6, $Comment_document$ques$7, $Comment_$eq_eq$8, $Comment_inspect$9;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.location = nil;
+        $proto.location = nil;
         
         self.$attr_reader("text");
         self.$attr_reader("location");
         self.$alias_method("loc", "location");
-        Opal.defs(self, '$associate', $Comment_associate$1 = function $$associate(ast, comments) {
-          var self = this, associator = nil;
+        $defs(self, '$associate', function $$associate(ast, comments) {
+          var associator = nil;
 
           
-          associator = $$($nesting, 'Associator').$new(ast, comments);
+          associator = $$('Associator').$new(ast, comments);
           return associator.$associate();
-        }, $Comment_associate$1.$$arity = 2);
-        Opal.defs(self, '$associate_locations', $Comment_associate_locations$2 = function $$associate_locations(ast, comments) {
-          var self = this, associator = nil;
+        }, 2);
+        $defs(self, '$associate_locations', function $$associate_locations(ast, comments) {
+          var associator = nil;
 
           
-          associator = $$($nesting, 'Associator').$new(ast, comments);
+          associator = $$('Associator').$new(ast, comments);
           return associator.$associate_locations();
-        }, $Comment_associate_locations$2.$$arity = 2);
-        Opal.defs(self, '$associate_by_identity', $Comment_associate_by_identity$3 = function $$associate_by_identity(ast, comments) {
-          var self = this, associator = nil;
+        }, 2);
+        $defs(self, '$associate_by_identity', function $$associate_by_identity(ast, comments) {
+          var associator = nil;
 
           
-          associator = $$($nesting, 'Associator').$new(ast, comments);
+          associator = $$('Associator').$new(ast, comments);
           return associator.$associate_by_identity();
-        }, $Comment_associate_by_identity$3.$$arity = 2);
+        }, 2);
         
-        Opal.def(self, '$initialize', $Comment_initialize$4 = function $$initialize(range) {
+        $def(self, '$initialize', function $$initialize(range) {
           var self = this;
 
           
-          self.location = $$$($$$($$($nesting, 'Parser'), 'Source'), 'Map').$new(range);
+          self.location = $$$($$$($$('Parser'), 'Source'), 'Map').$new(range);
           self.text = range.$source().$freeze();
           return self.$freeze();
-        }, $Comment_initialize$4.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$type', $Comment_type$5 = function $$type() {
+        $def(self, '$type', function $$type() {
           var self = this;
 
           if ($truthy(self.$text()['$start_with?']("#".$freeze()))) {
@@ -4452,53 +3960,43 @@ Opal.modules["parser/source/comment"] = function(Opal) {
           } else {
             return nil
           }
-        }, $Comment_type$5.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$inline?', $Comment_inline$ques$6 = function() {
+        $def(self, '$inline?', function $Comment_inline$ques$1() {
           var self = this;
 
           return self.$type()['$==']("inline")
-        }, $Comment_inline$ques$6.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$document?', $Comment_document$ques$7 = function() {
+        $def(self, '$document?', function $Comment_document$ques$2() {
           var self = this;
 
           return self.$type()['$==']("document")
-        }, $Comment_document$ques$7.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$==', $Comment_$eq_eq$8 = function(other) {
+        $def(self, '$==', function $Comment_$eq_eq$3(other) {
           var self = this, $ret_or_1 = nil;
 
-          if ($truthy(($ret_or_1 = other['$is_a?']($$$($$($nesting, 'Source'), 'Comment'))))) {
+          if ($truthy(($ret_or_1 = other['$is_a?']($$$($$('Source'), 'Comment'))))) {
             return self.location['$=='](other.$location())
           } else {
             return $ret_or_1
           }
-        }, $Comment_$eq_eq$8.$$arity = 1);
-        return (Opal.def(self, '$inspect', $Comment_inspect$9 = function $$inspect() {
+        }, 1);
+        return $def(self, '$inspect', function $$inspect() {
           var self = this;
 
-          return "" + "#<Parser::Source::Comment " + (self.location.$expression().$to_s()) + " " + (self.$text().$inspect()) + ">"
-        }, $Comment_inspect$9.$$arity = 0), nil) && 'inspect';
+          return "#<Parser::Source::Comment " + (self.location.$expression().$to_s()) + " " + (self.$text().$inspect()) + ">"
+        }, 0);
       })($nesting[0], null, $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/comment/associator"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_le(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs <= rhs : lhs['$<='](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send;
+Opal.modules["parser/source/comment/associator"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $def = Opal.def, $const_set = Opal.const_set, $truthy = Opal.truthy, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $eqeq = Opal.eqeq, $rb_le = Opal.rb_le, $rb_plus = Opal.rb_plus, $not = Opal.not;
 
-  Opal.add_stubs(['$attr_accessor', '$do_associate', '$private', '$freeze', '$[]', '$include?', '$type', '$sort_by', '$compact', '$children', '$begin_pos', '$expression', '$loc', '$select', '$is_a?', '$new', '$[]=', '$-', '$==', '$compare_by_identity', '$advance_comment', '$advance_through_directives', '$visit', '$process_leading_comments', '$location', '$<=', '$line', '$last_line', '$each', '$children_in_source_order', '$process_trailing_comments', '$current_comment_before?', '$associate_and_advance_comment', '$current_comment_before_end?', '$current_comment_decorates?', '$+', '$!', '$end_pos', '$<<', '$start_with?', '$text', '$=~']);
+  Opal.add_stubs('attr_accessor,do_associate,private,freeze,[],include?,type,sort_by,compact,children,begin_pos,expression,loc,select,is_a?,new,[]=,-,==,compare_by_identity,advance_comment,advance_through_directives,visit,process_leading_comments,location,<=,line,last_line,each,children_in_source_order,process_trailing_comments,current_comment_before?,associate_and_advance_comment,current_comment_before_end?,current_comment_decorates?,+,!,end_pos,<<,start_with?,text,=~');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -4507,155 +4005,138 @@ Opal.modules["parser/source/comment/associator"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Source');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'Associator');
 
-        var $nesting = [self].concat($parent_nesting), $Associator_initialize$1, $Associator_associate$2, $Associator_associate_locations$3, $Associator_associate_by_identity$4, $Associator_children_in_source_order$5, $Associator_do_associate$8, $Associator_visit$10, $Associator_process_leading_comments$12, $Associator_process_trailing_comments$13, $Associator_advance_comment$14, $Associator_current_comment_before$ques$15, $Associator_current_comment_before_end$ques$16, $Associator_current_comment_decorates$ques$17, $Associator_associate_and_advance_comment$18, $Associator_advance_through_directives$19;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.map_using = self.$$prototype.mapping = self.$$prototype.skip_directives = self.$$prototype.ast = self.$$prototype.current_comment = self.$$prototype.comment_num = self.$$prototype.comments = nil;
+        $proto.map_using = $proto.mapping = $proto.skip_directives = $proto.ast = $proto.current_comment = $proto.comment_num = $proto.comments = nil;
         
         self.$attr_accessor("skip_directives");
         
-        Opal.def(self, '$initialize', $Associator_initialize$1 = function $$initialize(ast, comments) {
+        $def(self, '$initialize', function $$initialize(ast, comments) {
           var self = this;
 
           
           self.ast = ast;
           self.comments = comments;
           return (self.skip_directives = true);
-        }, $Associator_initialize$1.$$arity = 2);
+        }, 2);
         
-        Opal.def(self, '$associate', $Associator_associate$2 = function $$associate() {
+        $def(self, '$associate', function $$associate() {
           var self = this;
 
           
           self.map_using = "eql";
           return self.$do_associate();
-        }, $Associator_associate$2.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$associate_locations', $Associator_associate_locations$3 = function $$associate_locations() {
+        $def(self, '$associate_locations', function $$associate_locations() {
           var self = this;
 
           
           self.map_using = "location";
           return self.$do_associate();
-        }, $Associator_associate_locations$3.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$associate_by_identity', $Associator_associate_by_identity$4 = function $$associate_by_identity() {
+        $def(self, '$associate_by_identity', function $$associate_by_identity() {
           var self = this;
 
           
           self.map_using = "identity";
           return self.$do_associate();
-        }, $Associator_associate_by_identity$4.$$arity = 0);
+        }, 0);
         self.$private();
-        Opal.const_set($nesting[0], 'POSTFIX_TYPES', $$($nesting, 'Set')['$[]']("if", "while", "while_post", "until", "until_post", "masgn").$freeze());
+        $const_set($nesting[0], 'POSTFIX_TYPES', $$('Set')['$[]']("if", "while", "while_post", "until", "until_post", "masgn").$freeze());
         
-        Opal.def(self, '$children_in_source_order', $Associator_children_in_source_order$5 = function $$children_in_source_order(node) {
-          var $$6, $$7, self = this;
-
-          if ($truthy($$($nesting, 'POSTFIX_TYPES')['$include?'](node.$type()))) {
-            return $send(node.$children().$compact(), 'sort_by', [], ($$6 = function(child){var self = $$6.$$s == null ? this : $$6.$$s;
-
+        $def(self, '$children_in_source_order', function $$children_in_source_order(node) {
+          
+          if ($truthy($$('POSTFIX_TYPES')['$include?'](node.$type()))) {
+            return $send(node.$children().$compact(), 'sort_by', [], function $$1(child){
               
               
-              if (child == null) {
-                child = nil;
-              };
-              return child.$loc().$expression().$begin_pos();}, $$6.$$s = self, $$6.$$arity = 1, $$6))
+              if (child == null) child = nil;;
+              return child.$loc().$expression().$begin_pos();}, 1)
           } else {
-            return $send(node.$children(), 'select', [], ($$7 = function(child){var self = $$7.$$s == null ? this : $$7.$$s, $ret_or_1 = nil, $ret_or_2 = nil;
+            return $send(node.$children(), 'select', [], function $$2(child){var $ret_or_1 = nil, $ret_or_2 = nil;
 
               
               
-              if (child == null) {
-                child = nil;
-              };
-              if ($truthy(($ret_or_1 = (function() {if ($truthy(($ret_or_2 = child['$is_a?']($$$($$($nesting, 'AST'), 'Node'))))) {
-                return child.$loc()
-              } else {
-                return $ret_or_2
-              }; return nil; })()))) {
+              if (child == null) child = nil;;
+              if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = child['$is_a?']($$$($$('AST'), 'Node')))) ? (child.$loc()) : ($ret_or_2))))) {
                 return child.$loc().$expression()
               } else {
                 return $ret_or_1
-              };}, $$7.$$s = self, $$7.$$arity = 1, $$7))
+              };}, 1)
           }
-        }, $Associator_children_in_source_order$5.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$do_associate', $Associator_do_associate$8 = function $$do_associate() {
-          var $$9, self = this;
+        $def(self, '$do_associate', function $$do_associate() {
+          var self = this;
 
           
-          self.mapping = $send($$($nesting, 'Hash'), 'new', [], ($$9 = function(h, k){var self = $$9.$$s == null ? this : $$9.$$s, $writer = nil;
+          self.mapping = $send($$('Hash'), 'new', [], function $$3(h, k){var $writer = nil;
 
             
             
-            if (h == null) {
-              h = nil;
-            };
+            if (h == null) h = nil;;
             
-            if (k == null) {
-              k = nil;
-            };
+            if (k == null) k = nil;;
             $writer = [k, []];
-            $send(h, '[]=', Opal.to_a($writer));
-            return $writer[$rb_minus($writer["length"], 1)];}, $$9.$$s = self, $$9.$$arity = 2, $$9));
-          if (self.map_using['$==']("identity")) {
-            self.mapping.$compare_by_identity()};
+            $send(h, '[]=', $to_a($writer));
+            return $writer[$rb_minus($writer["length"], 1)];}, 2);
+          if ($eqeq(self.map_using, "identity")) {
+            self.mapping.$compare_by_identity()
+          };
           self.comment_num = -1;
           self.$advance_comment();
           if ($truthy(self.skip_directives)) {
-            self.$advance_through_directives()};
+            self.$advance_through_directives()
+          };
           if ($truthy(self.ast)) {
-            self.$visit(self.ast)};
+            self.$visit(self.ast)
+          };
           return self.mapping;
-        }, $Associator_do_associate$8.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$visit', $Associator_visit$10 = function $$visit(node) {
-          var $$11, self = this, node_loc = nil, $ret_or_3 = nil;
+        $def(self, '$visit', function $$visit(node) {
+          var self = this, node_loc = nil;
 
           
           self.$process_leading_comments(node);
-          if ($truthy(self.current_comment)) {
-          } else {
+          if (!$truthy(self.current_comment)) {
             return nil
           };
           node_loc = node.$location();
-          if ($truthy((function() {if ($truthy(($ret_or_3 = $rb_le(self.current_comment.$location().$line(), node_loc.$last_line())))) {
-            return $ret_or_3
-          } else {
-            return node_loc['$is_a?']($$$($$($nesting, 'Map'), 'Heredoc'))
-          }; return nil; })())) {
+          if (($truthy($rb_le(self.current_comment.$location().$line(), node_loc.$last_line())) || ($truthy(node_loc['$is_a?']($$$($$('Map'), 'Heredoc')))))) {
             
-            $send(self.$children_in_source_order(node), 'each', [], ($$11 = function(child){var self = $$11.$$s == null ? this : $$11.$$s;
+            $send(self.$children_in_source_order(node), 'each', [], function $$4(child){var self = $$4.$$s == null ? this : $$4.$$s;
 
               
               
-              if (child == null) {
-                child = nil;
-              };
-              return self.$visit(child);}, $$11.$$s = self, $$11.$$arity = 1, $$11));
+              if (child == null) child = nil;;
+              return self.$visit(child);}, {$$arity: 1, $$s: self});
             return self.$process_trailing_comments(node);
           } else {
             return nil
           };
-        }, $Associator_visit$10.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$process_leading_comments', $Associator_process_leading_comments$12 = function $$process_leading_comments(node) {
+        $def(self, '$process_leading_comments', function $$process_leading_comments(node) {
           var $a, self = this;
 
           
-          if (node.$type()['$==']("begin")) {
-            return nil};
+          if ($eqeq(node.$type(), "begin")) {
+            return nil
+          };
           while ($truthy(self['$current_comment_before?'](node))) {
             self.$associate_and_advance_comment(node)
           };
-        }, $Associator_process_leading_comments$12.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$process_trailing_comments', $Associator_process_trailing_comments$13 = function $$process_trailing_comments(node) {
+        $def(self, '$process_trailing_comments', function $$process_trailing_comments(node) {
           var $a, self = this;
 
           
@@ -4665,111 +4146,84 @@ Opal.modules["parser/source/comment/associator"] = function(Opal) {
           while ($truthy(self['$current_comment_decorates?'](node))) {
             self.$associate_and_advance_comment(node)
           };
-        }, $Associator_process_trailing_comments$13.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$advance_comment', $Associator_advance_comment$14 = function $$advance_comment() {
+        $def(self, '$advance_comment', function $$advance_comment() {
           var self = this;
 
           
           self.comment_num = $rb_plus(self.comment_num, 1);
           return (self.current_comment = self.comments['$[]'](self.comment_num));
-        }, $Associator_advance_comment$14.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$current_comment_before?', $Associator_current_comment_before$ques$15 = function(node) {
+        $def(self, '$current_comment_before?', function $Associator_current_comment_before$ques$5(node) {
           var self = this, comment_loc = nil, node_loc = nil;
 
           
-          if ($truthy(self.current_comment['$!']())) {
-            return false};
+          if ($not(self.current_comment)) {
+            return false
+          };
           comment_loc = self.current_comment.$location().$expression();
           node_loc = node.$location().$expression();
           return $rb_le(comment_loc.$end_pos(), node_loc.$begin_pos());
-        }, $Associator_current_comment_before$ques$15.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$current_comment_before_end?', $Associator_current_comment_before_end$ques$16 = function(node) {
+        $def(self, '$current_comment_before_end?', function $Associator_current_comment_before_end$ques$6(node) {
           var self = this, comment_loc = nil, node_loc = nil;
 
           
-          if ($truthy(self.current_comment['$!']())) {
-            return false};
+          if ($not(self.current_comment)) {
+            return false
+          };
           comment_loc = self.current_comment.$location().$expression();
           node_loc = node.$location().$expression();
           return $rb_le(comment_loc.$end_pos(), node_loc.$end_pos());
-        }, $Associator_current_comment_before_end$ques$16.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$current_comment_decorates?', $Associator_current_comment_decorates$ques$17 = function(node) {
+        $def(self, '$current_comment_decorates?', function $Associator_current_comment_decorates$ques$7(node) {
           var self = this;
 
           
-          if ($truthy(self.current_comment['$!']())) {
-            return false};
+          if ($not(self.current_comment)) {
+            return false
+          };
           return self.current_comment.$location().$line()['$=='](node.$location().$last_line());
-        }, $Associator_current_comment_decorates$ques$17.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$associate_and_advance_comment', $Associator_associate_and_advance_comment$18 = function $$associate_and_advance_comment(node) {
+        $def(self, '$associate_and_advance_comment', function $$associate_and_advance_comment(node) {
           var self = this, key = nil;
 
           
-          key = (function() {if (self.map_using['$==']("location")) {
-            return node.$location()
-          } else {
-            return node
-          }; return nil; })();
+          key = ($eqeq(self.map_using, "location") ? (node.$location()) : (node));
           self.mapping['$[]'](key)['$<<'](self.current_comment);
           return self.$advance_comment();
-        }, $Associator_associate_and_advance_comment$18.$$arity = 1);
-        Opal.const_set($nesting[0], 'MAGIC_COMMENT_RE', /^#\s*(-\*-|)\s*(frozen_string_literal|warn_indent|warn_past_scope):.*\1$/);
-        return (Opal.def(self, '$advance_through_directives', $Associator_advance_through_directives$19 = function $$advance_through_directives() {
-          var self = this, $ret_or_4 = nil, $ret_or_5 = nil, $ret_or_6 = nil;
+        }, 1);
+        $const_set($nesting[0], 'MAGIC_COMMENT_RE', /^#\s*(-\*-|)\s*(frozen_string_literal|warn_indent|warn_past_scope):.*\1$/);
+        return $def(self, '$advance_through_directives', function $$advance_through_directives() {
+          var self = this;
 
           
-          if ($truthy((function() {if ($truthy(($ret_or_4 = self.current_comment))) {
-            return self.current_comment.$text()['$start_with?']("#!".$freeze())
-          } else {
-            return $ret_or_4
-          }; return nil; })())) {
-            self.$advance_comment()};
-          if ($truthy((function() {if ($truthy(($ret_or_5 = self.current_comment))) {
-            return self.current_comment.$text()['$=~']($$($nesting, 'MAGIC_COMMENT_RE'))
-          } else {
-            return $ret_or_5
-          }; return nil; })())) {
-            self.$advance_comment()};
-          if ($truthy((function() {if ($truthy(($ret_or_6 = self.current_comment))) {
-            return self.current_comment.$text()['$=~']($$$($$($nesting, 'Buffer'), 'ENCODING_RE'))
-          } else {
-            return $ret_or_6
-          }; return nil; })())) {
+          if (($truthy(self.current_comment) && ($truthy(self.current_comment.$text()['$start_with?']("#!".$freeze()))))) {
+            self.$advance_comment()
+          };
+          if (($truthy(self.current_comment) && ($truthy(self.current_comment.$text()['$=~']($$('MAGIC_COMMENT_RE')))))) {
+            self.$advance_comment()
+          };
+          if (($truthy(self.current_comment) && ($truthy(self.current_comment.$text()['$=~']($$$($$('Buffer'), 'ENCODING_RE')))))) {
             return self.$advance_comment()
           } else {
             return nil
           };
-        }, $Associator_advance_through_directives$19.$$arity = 0), nil) && 'advance_through_directives';
-      })($$($nesting, 'Comment'), null, $nesting)
+        }, 0);
+      })($$('Comment'), null, $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/rewriter"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_le(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs <= rhs : lhs['$<='](rhs);
-  }
-  function $rb_ge(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs >= rhs : lhs['$>='](rhs);
-  }
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $gvars = Opal.gvars, $truthy = Opal.truthy, $hash2 = Opal.hash2;
+Opal.modules["parser/source/rewriter"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $gvars = Opal.gvars, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $def = Opal.def, $rb_plus = Opal.rb_plus, $truthy = Opal.truthy, $not = Opal.not, $neqeq = Opal.neqeq, $rb_le = Opal.rb_le, $rb_ge = Opal.rb_ge, $rb_lt = Opal.rb_lt, $hash2 = Opal.hash2, $const_set = Opal.const_set;
 
-  Opal.add_stubs(['$attr_reader', '$warn_of_deprecation', '$class', '$new', '$lambda', '$puts', '$render', '$consumer=', '$-', '$append', '$freeze', '$begin', '$end', '$+', '$in_transaction?', '$raise', '$dup', '$source', '$each', '$sort', '$begin_pos', '$range', '$length', '$replacement', '$[]=', '$private', '$empty?', '$!', '$allow_multiple_insertions?', '$clobbered_insertion?', '$raise_clobber_error', '$record_insertion', '$adjacent_updates?', '$find', '$overlaps?', '$replace_compatible_with_insertion?', '$merge_actions!', '$<<', '$active_queue', '$adjacent_insertions?', '$merge_actions', '$delete', '$can_merge?', '$record_replace', '$|', '$active_insertions', '$active_insertions=', '$active_clobber', '$clobbered_position_mask', '$active_clobber=', '$size', '$!=', '$&', '$<=', '$end_pos', '$adjacent_insertion_mask', '$select', '$adjacent?', '$adjacent_position_mask', '$>=', '$==', '$[]', '$all?', '$intersect', '$nil?', '$max', '$sort_by', '$push', '$join', '$first', '$max_by', '$merge_replacements', '$replace_actions', '$disjoint?', '$<', '$process', '$extend']);
+  Opal.add_stubs('attr_reader,warn_of_deprecation,class,new,lambda,puts,render,consumer=,-,append,freeze,begin,end,+,in_transaction?,raise,dup,source,each,sort,begin_pos,range,length,replacement,[]=,private,empty?,clobbered_insertion?,!,allow_multiple_insertions?,raise_clobber_error,record_insertion,adjacent_updates?,find,overlaps?,replace_compatible_with_insertion?,merge_actions!,<<,active_queue,adjacent_insertions?,merge_actions,delete,can_merge?,record_replace,|,active_insertions,active_insertions=,active_clobber,clobbered_position_mask,active_clobber=,size,!=,&,<=,end_pos,adjacent_insertion_mask,select,adjacent?,adjacent_position_mask,>=,==,[],all?,intersect,nil?,max,sort_by,push,join,first,max_by,merge_replacements,replace_actions,disjoint?,<,process,extend');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -4783,30 +4237,27 @@ Opal.modules["parser/source/rewriter"] = function(Opal) {
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'Rewriter');
 
-        var $nesting = [self].concat($parent_nesting), $Rewriter_initialize$1, $Rewriter_remove$3, $Rewriter_insert_before$4, $Rewriter_wrap$5, $Rewriter_insert_before_multi$6, $Rewriter_insert_after$7, $Rewriter_insert_after_multi$8, $Rewriter_replace$9, $Rewriter_process$10, $Rewriter_transaction$12, $Rewriter_append$13, $Rewriter_record_insertion$16, $Rewriter_record_replace$17, $Rewriter_clobbered_position_mask$18, $Rewriter_adjacent_position_mask$19, $Rewriter_adjacent_insertion_mask$20, $Rewriter_clobbered_insertion$ques$21, $Rewriter_adjacent_insertions$ques$23, $Rewriter_adjacent_updates$ques$25, $Rewriter_replace_compatible_with_insertion$ques$27, $Rewriter_can_merge$ques$28, $Rewriter_merge_actions$30, $Rewriter_merge_actions$excl$33, $Rewriter_merge_replacements$34, $Rewriter_replace_actions$36, $Rewriter_raise_clobber_error$38, $Rewriter_in_transaction$ques$39, $Rewriter_active_queue$40, $Rewriter_active_clobber$41, $Rewriter_active_insertions$42, $Rewriter_active_clobber$eq$43, $Rewriter_active_insertions$eq$44, $Rewriter_adjacent$ques$45;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.diagnostics = self.$$prototype.insert_before_multi_order = self.$$prototype.insert_after_multi_order = self.$$prototype.source_buffer = self.$$prototype.queue = self.$$prototype.clobber = self.$$prototype.insertions = self.$$prototype.pending_queue = self.$$prototype.pending_clobber = self.$$prototype.pending_insertions = nil;
+        $proto.diagnostics = $proto.insert_before_multi_order = $proto.insert_after_multi_order = $proto.source_buffer = $proto.queue = $proto.clobber = $proto.insertions = $proto.pending_queue = $proto.pending_clobber = $proto.pending_insertions = nil;
         
         self.$attr_reader("source_buffer");
         self.$attr_reader("diagnostics");
         
-        Opal.def(self, '$initialize', $Rewriter_initialize$1 = function $$initialize(source_buffer) {
-          var $$2, self = this, $writer = nil;
+        $def(self, '$initialize', function $$initialize(source_buffer) {
+          var self = this, $writer = nil;
 
           
           self.$class().$warn_of_deprecation();
-          self.diagnostics = $$$($$($nesting, 'Diagnostic'), 'Engine').$new();
+          self.diagnostics = $$$($$('Diagnostic'), 'Engine').$new();
           
-          $writer = [$send(self, 'lambda', [], ($$2 = function(diag){var self = $$2.$$s == null ? this : $$2.$$s;
-            if ($gvars.stderr == null) $gvars.stderr = nil;
+          $writer = [$send(self, 'lambda', [], function $$1(diag){            if ($gvars.stderr == null) $gvars.stderr = nil;
 
             
             
-            if (diag == null) {
-              diag = nil;
-            };
-            return $gvars.stderr.$puts(diag.$render());}, $$2.$$s = self, $$2.$$arity = 1, $$2))];
-          $send(self.diagnostics, 'consumer=', Opal.to_a($writer));
+            if (diag == null) diag = nil;;
+            return $gvars.stderr.$puts(diag.$render());}, 1)];
+          $send(self.diagnostics, 'consumer=', $to_a($writer));
           $writer[$rb_minus($writer["length"], 1)];;
           self.source_buffer = source_buffer;
           self.queue = [];
@@ -4817,93 +4268,92 @@ Opal.modules["parser/source/rewriter"] = function(Opal) {
           self.pending_queue = nil;
           self.pending_clobber = nil;
           return (self.pending_insertions = nil);
-        }, $Rewriter_initialize$1.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$remove', $Rewriter_remove$3 = function $$remove(range) {
+        $def(self, '$remove', function $$remove(range) {
           var self = this;
 
-          return self.$append($$$($$($nesting, 'Rewriter'), 'Action').$new(range, "".$freeze()))
-        }, $Rewriter_remove$3.$$arity = 1);
+          return self.$append($$$($$('Rewriter'), 'Action').$new(range, "".$freeze()))
+        }, 1);
         
-        Opal.def(self, '$insert_before', $Rewriter_insert_before$4 = function $$insert_before(range, content) {
+        $def(self, '$insert_before', function $$insert_before(range, content) {
           var self = this;
 
-          return self.$append($$$($$($nesting, 'Rewriter'), 'Action').$new(range.$begin(), content))
-        }, $Rewriter_insert_before$4.$$arity = 2);
+          return self.$append($$$($$('Rewriter'), 'Action').$new(range.$begin(), content))
+        }, 2);
         
-        Opal.def(self, '$wrap', $Rewriter_wrap$5 = function $$wrap(range, before, after) {
+        $def(self, '$wrap', function $$wrap(range, before, after) {
           var self = this;
 
           
-          self.$append($$$($$($nesting, 'Rewriter'), 'Action').$new(range.$begin(), before));
-          return self.$append($$$($$($nesting, 'Rewriter'), 'Action').$new(range.$end(), after));
-        }, $Rewriter_wrap$5.$$arity = 3);
+          self.$append($$$($$('Rewriter'), 'Action').$new(range.$begin(), before));
+          return self.$append($$$($$('Rewriter'), 'Action').$new(range.$end(), after));
+        }, 3);
         
-        Opal.def(self, '$insert_before_multi', $Rewriter_insert_before_multi$6 = function $$insert_before_multi(range, content) {
+        $def(self, '$insert_before_multi', function $$insert_before_multi(range, content) {
           var self = this;
 
           
           self.insert_before_multi_order = $rb_minus(self.insert_before_multi_order, 1);
-          return self.$append($$$($$($nesting, 'Rewriter'), 'Action').$new(range.$begin(), content, true, self.insert_before_multi_order));
-        }, $Rewriter_insert_before_multi$6.$$arity = 2);
+          return self.$append($$$($$('Rewriter'), 'Action').$new(range.$begin(), content, true, self.insert_before_multi_order));
+        }, 2);
         
-        Opal.def(self, '$insert_after', $Rewriter_insert_after$7 = function $$insert_after(range, content) {
+        $def(self, '$insert_after', function $$insert_after(range, content) {
           var self = this;
 
-          return self.$append($$$($$($nesting, 'Rewriter'), 'Action').$new(range.$end(), content))
-        }, $Rewriter_insert_after$7.$$arity = 2);
+          return self.$append($$$($$('Rewriter'), 'Action').$new(range.$end(), content))
+        }, 2);
         
-        Opal.def(self, '$insert_after_multi', $Rewriter_insert_after_multi$8 = function $$insert_after_multi(range, content) {
+        $def(self, '$insert_after_multi', function $$insert_after_multi(range, content) {
           var self = this;
 
           
           self.insert_after_multi_order = $rb_plus(self.insert_after_multi_order, 1);
-          return self.$append($$$($$($nesting, 'Rewriter'), 'Action').$new(range.$end(), content, true, self.insert_after_multi_order));
-        }, $Rewriter_insert_after_multi$8.$$arity = 2);
+          return self.$append($$$($$('Rewriter'), 'Action').$new(range.$end(), content, true, self.insert_after_multi_order));
+        }, 2);
         
-        Opal.def(self, '$replace', $Rewriter_replace$9 = function $$replace(range, content) {
+        $def(self, '$replace', function $$replace(range, content) {
           var self = this;
 
-          return self.$append($$$($$($nesting, 'Rewriter'), 'Action').$new(range, content))
-        }, $Rewriter_replace$9.$$arity = 2);
+          return self.$append($$$($$('Rewriter'), 'Action').$new(range, content))
+        }, 2);
         
-        Opal.def(self, '$process', $Rewriter_process$10 = function $$process() {
-          var $$11, self = this, adjustment = nil, source = nil;
+        $def(self, '$process', function $$process() {
+          var self = this, adjustment = nil, source = nil;
 
           
           if ($truthy(self['$in_transaction?']())) {
-            self.$raise("" + "Do not call " + (self.$class()) + "#" + ("process") + " inside a transaction")};
+            self.$raise("Do not call " + (self.$class()) + "#" + ("process") + " inside a transaction")
+          };
           adjustment = 0;
           source = self.source_buffer.$source().$dup();
-          $send(self.queue.$sort(), 'each', [], ($$11 = function(action){var self = $$11.$$s == null ? this : $$11.$$s, begin_pos = nil, end_pos = nil, $writer = nil;
+          $send(self.queue.$sort(), 'each', [], function $$2(action){var begin_pos = nil, end_pos = nil, $writer = nil;
 
             
             
-            if (action == null) {
-              action = nil;
-            };
+            if (action == null) action = nil;;
             begin_pos = $rb_plus(action.$range().$begin_pos(), adjustment);
             end_pos = $rb_plus(begin_pos, action.$range().$length());
             
             $writer = [Opal.Range.$new(begin_pos,end_pos, true), action.$replacement()];
-            $send(source, '[]=', Opal.to_a($writer));
+            $send(source, '[]=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
-            return (adjustment = $rb_plus(adjustment, $rb_minus(action.$replacement().$length(), action.$range().$length())));}, $$11.$$s = self, $$11.$$arity = 1, $$11));
+            return (adjustment = $rb_plus(adjustment, $rb_minus(action.$replacement().$length(), action.$range().$length())));}, 1);
           return source;
-        }, $Rewriter_process$10.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$transaction', $Rewriter_transaction$12 = function $$transaction() {
-          var $iter = $Rewriter_transaction$12.$$p, $yield = $iter || nil, self = this;
+        $def(self, '$transaction', function $$transaction() {
+          var $yield = $$transaction.$$p || nil, self = this;
 
-          if ($iter) $Rewriter_transaction$12.$$p = null;
+          delete $$transaction.$$p;
           return (function() { try {
           
-          if (($yield !== nil)) {
-          } else {
+          if (!($yield !== nil)) {
             self.$raise("" + (self.$class()) + "#" + ("transaction") + " requires block")
           };
           if ($truthy(self['$in_transaction?']())) {
-            self.$raise("Nested transaction is not supported")};
+            self.$raise("Nested transaction is not supported")
+          };
           self.pending_queue = self.queue.$dup();
           self.pending_clobber = self.clobber;
           self.pending_insertions = self.insertions;
@@ -4915,42 +4365,38 @@ Opal.modules["parser/source/rewriter"] = function(Opal) {
           } finally {
             ((self.pending_queue = nil), (self.pending_clobber = nil), (self.pending_insertions = nil))
           }; })()
-        }, $Rewriter_transaction$12.$$arity = 0);
+        }, 0);
         self.$private();
         
-        Opal.def(self, '$append', $Rewriter_append$13 = function $$append(action) {
-          var $$14, $$15, self = this, range = nil, $ret_or_1 = nil, conflicting = nil, adjacent = nil, insertions = nil;
+        $def(self, '$append', function $$append(action) {
+          var self = this, range = nil, conflicting = nil, adjacent = nil, insertions = nil;
 
           
           range = action.$range();
           if ($truthy(range['$empty?']())) {
             
             if ($truthy(action.$replacement()['$empty?']())) {
-              return self};
-            if ($truthy((function() {if ($truthy(($ret_or_1 = action['$allow_multiple_insertions?']()['$!']()))) {
-              
-              return (conflicting = self['$clobbered_insertion?'](range));
-            } else {
-              return $ret_or_1
-            }; return nil; })())) {
-              self.$raise_clobber_error(action, [conflicting])};
+              return self
+            };
+            if (($not(action['$allow_multiple_insertions?']()) && ($truthy((conflicting = self['$clobbered_insertion?'](range)))))) {
+              self.$raise_clobber_error(action, [conflicting])
+            };
             self.$record_insertion(range);
             if ($truthy((adjacent = self['$adjacent_updates?'](range)))) {
               
-              conflicting = $send(adjacent, 'find', [], ($$14 = function(a){var self = $$14.$$s == null ? this : $$14.$$s, $ret_or_2 = nil;
+              conflicting = $send(adjacent, 'find', [], function $$3(a){var self = $$3.$$s == null ? this : $$3.$$s, $ret_or_1 = nil;
 
                 
                 
-                if (a == null) {
-                  a = nil;
-                };
-                if ($truthy(($ret_or_2 = a.$range()['$overlaps?'](range)))) {
+                if (a == null) a = nil;;
+                if ($truthy(($ret_or_1 = a.$range()['$overlaps?'](range)))) {
                   return self['$replace_compatible_with_insertion?'](a, action)['$!']()
                 } else {
-                  return $ret_or_2
-                };}, $$14.$$s = self, $$14.$$arity = 1, $$14));
+                  return $ret_or_1
+                };}, {$$arity: 1, $$s: self});
               if ($truthy(conflicting)) {
-                self.$raise_clobber_error(action, [conflicting])};
+                self.$raise_clobber_error(action, [conflicting])
+              };
               self['$merge_actions!'](action, adjacent);
             } else {
               self.$active_queue()['$<<'](action)
@@ -4958,24 +4404,19 @@ Opal.modules["parser/source/rewriter"] = function(Opal) {
           } else {
             
             if ($truthy((insertions = self['$adjacent_insertions?'](range)))) {
-              $send(insertions, 'each', [], ($$15 = function(insertion){var self = $$15.$$s == null ? this : $$15.$$s, $ret_or_3 = nil;
+              $send(insertions, 'each', [], function $$4(insertion){var self = $$4.$$s == null ? this : $$4.$$s;
 
                 
                 
-                if (insertion == null) {
-                  insertion = nil;
-                };
-                if ($truthy((function() {if ($truthy(($ret_or_3 = range['$overlaps?'](insertion.$range())))) {
-                  return self['$replace_compatible_with_insertion?'](action, insertion)['$!']()
-                } else {
-                  return $ret_or_3
-                }; return nil; })())) {
+                if (insertion == null) insertion = nil;;
+                if (($truthy(range['$overlaps?'](insertion.$range())) && ($not(self['$replace_compatible_with_insertion?'](action, insertion))))) {
                   return self.$raise_clobber_error(action, [insertion])
                 } else {
                   
                   action = self.$merge_actions(action, [insertion]);
                   return self.$active_queue().$delete(insertion);
-                };}, $$15.$$s = self, $$15.$$arity = 1, $$15))};
+                };}, {$$arity: 1, $$s: self})
+            };
             if ($truthy((adjacent = self['$adjacent_updates?'](range)))) {
               if ($truthy(self['$can_merge?'](action, adjacent))) {
                 
@@ -4991,84 +4432,77 @@ Opal.modules["parser/source/rewriter"] = function(Opal) {
             };
           };
           return self;
-        }, $Rewriter_append$13.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$record_insertion', $Rewriter_record_insertion$16 = function $$record_insertion(range) {
+        $def(self, '$record_insertion', function $$record_insertion(range) {
           var self = this, $writer = nil;
 
           
           $writer = [self.$active_insertions()['$|']((1)['$<<'](range.$begin_pos()))];
-          $send(self, 'active_insertions=', Opal.to_a($writer));
+          $send(self, 'active_insertions=', $to_a($writer));
           return $writer[$rb_minus($writer["length"], 1)];
-        }, $Rewriter_record_insertion$16.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$record_replace', $Rewriter_record_replace$17 = function $$record_replace(range) {
+        $def(self, '$record_replace', function $$record_replace(range) {
           var self = this, $writer = nil;
 
           
           $writer = [self.$active_clobber()['$|'](self.$clobbered_position_mask(range))];
-          $send(self, 'active_clobber=', Opal.to_a($writer));
+          $send(self, 'active_clobber=', $to_a($writer));
           return $writer[$rb_minus($writer["length"], 1)];
-        }, $Rewriter_record_replace$17.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$clobbered_position_mask', $Rewriter_clobbered_position_mask$18 = function $$clobbered_position_mask(range) {
-          var self = this;
-
+        $def(self, '$clobbered_position_mask', function $$clobbered_position_mask(range) {
+          
           return $rb_minus((1)['$<<'](range.$size()), 1)['$<<'](range.$begin_pos())
-        }, $Rewriter_clobbered_position_mask$18.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$adjacent_position_mask', $Rewriter_adjacent_position_mask$19 = function $$adjacent_position_mask(range) {
-          var self = this;
-
+        $def(self, '$adjacent_position_mask', function $$adjacent_position_mask(range) {
+          
           return $rb_minus((1)['$<<']($rb_plus(range.$size(), 2)), 1)['$<<']($rb_minus(range.$begin_pos(), 1))
-        }, $Rewriter_adjacent_position_mask$19.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$adjacent_insertion_mask', $Rewriter_adjacent_insertion_mask$20 = function $$adjacent_insertion_mask(range) {
-          var self = this;
-
+        $def(self, '$adjacent_insertion_mask', function $$adjacent_insertion_mask(range) {
+          
           return $rb_minus((1)['$<<']($rb_plus(range.$size(), 1)), 1)['$<<'](range.$begin_pos())
-        }, $Rewriter_adjacent_insertion_mask$20.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$clobbered_insertion?', $Rewriter_clobbered_insertion$ques$21 = function(insertion) {
-          var $$22, self = this, insertion_pos = nil;
+        $def(self, '$clobbered_insertion?', function $Rewriter_clobbered_insertion$ques$5(insertion) {
+          var self = this, insertion_pos = nil;
 
           
           insertion_pos = insertion.$begin_pos();
-          if ($truthy(self.$active_insertions()['$&']((1)['$<<'](insertion_pos))['$!='](0))) {
-            return $send(self.$active_queue(), 'find', [], ($$22 = function(a){var self = $$22.$$s == null ? this : $$22.$$s, $ret_or_4 = nil;
+          if ($neqeq(self.$active_insertions()['$&']((1)['$<<'](insertion_pos)), 0)) {
+            return $send(self.$active_queue(), 'find', [], function $$6(a){var $ret_or_1 = nil;
 
               
               
-              if (a == null) {
-                a = nil;
-              };
-              if ($truthy(($ret_or_4 = $rb_le(a.$range().$begin_pos(), insertion_pos)))) {
+              if (a == null) a = nil;;
+              if ($truthy(($ret_or_1 = $rb_le(a.$range().$begin_pos(), insertion_pos)))) {
                 return $rb_le(insertion_pos, a.$range().$end_pos())
               } else {
-                return $ret_or_4
-              };}, $$22.$$s = self, $$22.$$arity = 1, $$22))
+                return $ret_or_1
+              };}, 1)
           } else {
             return nil
           };
-        }, $Rewriter_clobbered_insertion$ques$21.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$adjacent_insertions?', $Rewriter_adjacent_insertions$ques$23 = function(range) {
-          var $$24, self = this, result = nil;
+        $def(self, '$adjacent_insertions?', function $Rewriter_adjacent_insertions$ques$7(range) {
+          var self = this, result = nil;
 
-          if ($truthy(self.$active_insertions()['$&'](self.$adjacent_insertion_mask(range))['$!='](0))) {
+          if ($neqeq(self.$active_insertions()['$&'](self.$adjacent_insertion_mask(range)), 0)) {
             
-            result = $send(self.$active_queue(), 'select', [], ($$24 = function(a){var self = $$24.$$s == null ? this : $$24.$$s, $ret_or_5 = nil;
+            result = $send(self.$active_queue(), 'select', [], function $$8(a){var self = $$8.$$s == null ? this : $$8.$$s, $ret_or_1 = nil;
 
               
               
-              if (a == null) {
-                a = nil;
-              };
-              if ($truthy(($ret_or_5 = a.$range()['$empty?']()))) {
+              if (a == null) a = nil;;
+              if ($truthy(($ret_or_1 = a.$range()['$empty?']()))) {
                 return self['$adjacent?'](range, a.$range())
               } else {
-                return $ret_or_5
-              };}, $$24.$$s = self, $$24.$$arity = 1, $$24));
+                return $ret_or_1
+              };}, {$$arity: 1, $$s: self});
             if ($truthy(result['$empty?']())) {
               return nil
             } else {
@@ -5077,197 +4511,168 @@ Opal.modules["parser/source/rewriter"] = function(Opal) {
           } else {
             return nil
           }
-        }, $Rewriter_adjacent_insertions$ques$23.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$adjacent_updates?', $Rewriter_adjacent_updates$ques$25 = function(range) {
-          var $$26, self = this;
+        $def(self, '$adjacent_updates?', function $Rewriter_adjacent_updates$ques$9(range) {
+          var self = this;
 
-          if ($truthy(self.$active_clobber()['$&'](self.$adjacent_position_mask(range))['$!='](0))) {
-            return $send(self.$active_queue(), 'select', [], ($$26 = function(a){var self = $$26.$$s == null ? this : $$26.$$s;
+          if ($neqeq(self.$active_clobber()['$&'](self.$adjacent_position_mask(range)), 0)) {
+            return $send(self.$active_queue(), 'select', [], function $$10(a){var self = $$10.$$s == null ? this : $$10.$$s;
 
               
               
-              if (a == null) {
-                a = nil;
-              };
-              return self['$adjacent?'](range, a.$range());}, $$26.$$s = self, $$26.$$arity = 1, $$26))
+              if (a == null) a = nil;;
+              return self['$adjacent?'](range, a.$range());}, {$$arity: 1, $$s: self})
           } else {
             return nil
           }
-        }, $Rewriter_adjacent_updates$ques$25.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$replace_compatible_with_insertion?', $Rewriter_replace_compatible_with_insertion$ques$27 = function(replace, insertion) {
-          var self = this, $ret_or_6 = nil, $ret_or_7 = nil, offset = nil;
+        $def(self, '$replace_compatible_with_insertion?', function $Rewriter_replace_compatible_with_insertion$ques$11(replace, insertion) {
+          var $ret_or_1 = nil, $ret_or_2 = nil, offset = nil;
 
-          if ($truthy(($ret_or_6 = (function() {if ($truthy(($ret_or_7 = $rb_ge($rb_minus(replace.$replacement().$length(), replace.$range().$size()), insertion.$range().$size())))) {
-            
-            return (offset = $rb_minus(insertion.$range().$begin_pos(), replace.$range().$begin_pos()));
-          } else {
-            return $ret_or_7
-          }; return nil; })()))) {
+          if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = $rb_ge($rb_minus(replace.$replacement().$length(), replace.$range().$size()), insertion.$range().$size()))) ? ((offset = $rb_minus(insertion.$range().$begin_pos(), replace.$range().$begin_pos()))) : ($ret_or_2))))) {
             return replace.$replacement()['$[]'](offset, insertion.$replacement().$length())['$=='](insertion.$replacement())
           } else {
-            return $ret_or_6
+            return $ret_or_1
           }
-        }, $Rewriter_replace_compatible_with_insertion$ques$27.$$arity = 2);
+        }, 2);
         
-        Opal.def(self, '$can_merge?', $Rewriter_can_merge$ques$28 = function(action, existing) {
-          var $$29, self = this, range = nil;
+        $def(self, '$can_merge?', function $Rewriter_can_merge$ques$12(action, existing) {
+          var range = nil;
 
           
           range = action.$range();
-          return $send(existing, 'all?', [], ($$29 = function(other){var self = $$29.$$s == null ? this : $$29.$$s, overlap = nil, repl1_offset = nil, repl2_offset = nil, repl1_length = nil, repl2_length = nil, replacement1 = nil, $ret_or_8 = nil, replacement2 = nil, $ret_or_9 = nil;
+          return $send(existing, 'all?', [], function $$13(other){var overlap = nil, repl1_offset = nil, repl2_offset = nil, repl1_length = nil, repl2_length = nil, replacement1 = nil, $ret_or_1 = nil, replacement2 = nil;
 
             
             
-            if (other == null) {
-              other = nil;
-            };
+            if (other == null) other = nil;;
             overlap = range.$intersect(other.$range());
             if ($truthy(overlap['$nil?']())) {
-              return true;};
+              return true;
+            };
             repl1_offset = $rb_minus(overlap.$begin_pos(), range.$begin_pos());
             repl2_offset = $rb_minus(overlap.$begin_pos(), other.$range().$begin_pos());
             repl1_length = [$rb_minus(other.$range().$length(), repl2_offset), $rb_minus(other.$replacement().$length(), repl2_offset)].$max();
             repl2_length = [$rb_minus(range.$length(), repl1_offset), $rb_minus(action.$replacement().$length(), repl1_offset)].$max();
-            replacement1 = (function() {if ($truthy(($ret_or_8 = action.$replacement()['$[]'](repl1_offset, repl1_length)))) {
-              return $ret_or_8
-            } else {
-              return "".$freeze()
-            }; return nil; })();
-            replacement2 = (function() {if ($truthy(($ret_or_9 = other.$replacement()['$[]'](repl2_offset, repl2_length)))) {
-              return $ret_or_9
-            } else {
-              return "".$freeze()
-            }; return nil; })();
-            return replacement1['$=='](replacement2);}, $$29.$$s = self, $$29.$$arity = 1, $$29));
-        }, $Rewriter_can_merge$ques$28.$$arity = 2);
+            replacement1 = ($truthy(($ret_or_1 = action.$replacement()['$[]'](repl1_offset, repl1_length))) ? ($ret_or_1) : ("".$freeze()));
+            replacement2 = ($truthy(($ret_or_1 = other.$replacement()['$[]'](repl2_offset, repl2_length))) ? ($ret_or_1) : ("".$freeze()));
+            return replacement1['$=='](replacement2);}, 1);
+        }, 2);
         
-        Opal.def(self, '$merge_actions', $Rewriter_merge_actions$30 = function $$merge_actions(action, existing) {
-          var $$31, $$32, self = this, actions = nil, range = nil;
+        $def(self, '$merge_actions', function $$merge_actions(action, existing) {
+          var self = this, actions = nil, range = nil;
 
           
-          actions = $send(existing.$push(action), 'sort_by', [], ($$31 = function(a){var self = $$31.$$s == null ? this : $$31.$$s;
-
+          actions = $send(existing.$push(action), 'sort_by', [], function $$14(a){
             
             
-            if (a == null) {
-              a = nil;
-            };
-            return [a.$range().$begin_pos(), a.$range().$end_pos()];}, $$31.$$s = self, $$31.$$arity = 1, $$31));
-          range = actions.$first().$range().$join($send(actions, 'max_by', [], ($$32 = function(a){var self = $$32.$$s == null ? this : $$32.$$s;
-
+            if (a == null) a = nil;;
+            return [a.$range().$begin_pos(), a.$range().$end_pos()];}, 1);
+          range = actions.$first().$range().$join($send(actions, 'max_by', [], function $$15(a){
             
             
-            if (a == null) {
-              a = nil;
-            };
-            return a.$range().$end_pos();}, $$32.$$s = self, $$32.$$arity = 1, $$32)).$range());
-          return $$$($$($nesting, 'Rewriter'), 'Action').$new(range, self.$merge_replacements(actions));
-        }, $Rewriter_merge_actions$30.$$arity = 2);
+            if (a == null) a = nil;;
+            return a.$range().$end_pos();}, 1).$range());
+          return $$$($$('Rewriter'), 'Action').$new(range, self.$merge_replacements(actions));
+        }, 2);
         
-        Opal.def(self, '$merge_actions!', $Rewriter_merge_actions$excl$33 = function(action, existing) {
+        $def(self, '$merge_actions!', function $Rewriter_merge_actions$excl$16(action, existing) {
           var self = this, new_action = nil;
 
           
           new_action = self.$merge_actions(action, existing);
           self.$active_queue().$delete(action);
           return self.$replace_actions(existing, new_action);
-        }, $Rewriter_merge_actions$excl$33.$$arity = 2);
+        }, 2);
         
-        Opal.def(self, '$merge_replacements', $Rewriter_merge_replacements$34 = function $$merge_replacements(actions) {
-          var $$35, self = this, result = nil, prev_act = nil;
+        $def(self, '$merge_replacements', function $$merge_replacements(actions) {
+          var result = nil, prev_act = nil;
 
           
           result = "".$dup();
           prev_act = nil;
-          $send(actions, 'each', [], ($$35 = function(act){var self = $$35.$$s == null ? this : $$35.$$s, $ret_or_10 = nil, prev_end = nil, offset = nil;
+          $send(actions, 'each', [], function $$17(act){var prev_end = nil, offset = nil;
 
             
             
-            if (act == null) {
-              act = nil;
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_10 = prev_act['$!']()))) {
-              return $ret_or_10
-            } else {
-              return act.$range()['$disjoint?'](prev_act.$range())
-            }; return nil; })())) {
+            if (act == null) act = nil;;
+            if (($not(prev_act) || ($truthy(act.$range()['$disjoint?'](prev_act.$range()))))) {
               result['$<<'](act.$replacement())
             } else {
               
               prev_end = [$rb_plus(prev_act.$range().$begin_pos(), prev_act.$replacement().$length()), prev_act.$range().$end_pos()].$max();
               offset = $rb_minus(prev_end, act.$range().$begin_pos());
               if ($truthy($rb_lt(offset, act.$replacement().$size()))) {
-                result['$<<'](act.$replacement()['$[]'](Opal.Range.$new(offset, -1, false)))};
+                result['$<<'](act.$replacement()['$[]'](Opal.Range.$new(offset, -1, false)))
+              };
             };
-            return (prev_act = act);}, $$35.$$s = self, $$35.$$arity = 1, $$35));
+            return (prev_act = act);}, 1);
           return result;
-        }, $Rewriter_merge_replacements$34.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$replace_actions', $Rewriter_replace_actions$36 = function $$replace_actions(old, updated) {
-          var $$37, self = this;
+        $def(self, '$replace_actions', function $$replace_actions(old, updated) {
+          var self = this;
 
           
-          $send(old, 'each', [], ($$37 = function(act){var self = $$37.$$s == null ? this : $$37.$$s;
+          $send(old, 'each', [], function $$18(act){var self = $$18.$$s == null ? this : $$18.$$s;
 
             
             
-            if (act == null) {
-              act = nil;
-            };
-            return self.$active_queue().$delete(act);}, $$37.$$s = self, $$37.$$arity = 1, $$37));
+            if (act == null) act = nil;;
+            return self.$active_queue().$delete(act);}, {$$arity: 1, $$s: self});
           return self.$active_queue()['$<<'](updated);
-        }, $Rewriter_replace_actions$36.$$arity = 2);
+        }, 2);
         
-        Opal.def(self, '$raise_clobber_error', $Rewriter_raise_clobber_error$38 = function $$raise_clobber_error(action, existing) {
+        $def(self, '$raise_clobber_error', function $$raise_clobber_error(action, existing) {
           var self = this, diagnostic = nil;
 
           
-          diagnostic = $$($nesting, 'Diagnostic').$new("error", "invalid_action", $hash2(["action"], {"action": action}), action.$range());
+          diagnostic = $$('Diagnostic').$new("error", "invalid_action", $hash2(["action"], {"action": action}), action.$range());
           self.diagnostics.$process(diagnostic);
-          diagnostic = $$($nesting, 'Diagnostic').$new("note", "clobbered", $hash2(["action"], {"action": existing['$[]'](0)}), existing['$[]'](0).$range());
+          diagnostic = $$('Diagnostic').$new("note", "clobbered", $hash2(["action"], {"action": existing['$[]'](0)}), existing['$[]'](0).$range());
           self.diagnostics.$process(diagnostic);
-          return self.$raise($$($nesting, 'ClobberingError'), "Parser::Source::Rewriter detected clobbering");
-        }, $Rewriter_raise_clobber_error$38.$$arity = 2);
+          return self.$raise($$('ClobberingError'), "Parser::Source::Rewriter detected clobbering");
+        }, 2);
         
-        Opal.def(self, '$in_transaction?', $Rewriter_in_transaction$ques$39 = function() {
+        $def(self, '$in_transaction?', function $Rewriter_in_transaction$ques$19() {
           var self = this;
 
           return self.pending_queue['$nil?']()['$!']()
-        }, $Rewriter_in_transaction$ques$39.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$active_queue', $Rewriter_active_queue$40 = function $$active_queue() {
-          var self = this, $ret_or_11 = nil;
+        $def(self, '$active_queue', function $$active_queue() {
+          var self = this, $ret_or_1 = nil;
 
-          if ($truthy(($ret_or_11 = self.pending_queue))) {
-            return $ret_or_11
+          if ($truthy(($ret_or_1 = self.pending_queue))) {
+            return $ret_or_1
           } else {
             return self.queue
           }
-        }, $Rewriter_active_queue$40.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$active_clobber', $Rewriter_active_clobber$41 = function $$active_clobber() {
-          var self = this, $ret_or_12 = nil;
+        $def(self, '$active_clobber', function $$active_clobber() {
+          var self = this, $ret_or_1 = nil;
 
-          if ($truthy(($ret_or_12 = self.pending_clobber))) {
-            return $ret_or_12
+          if ($truthy(($ret_or_1 = self.pending_clobber))) {
+            return $ret_or_1
           } else {
             return self.clobber
           }
-        }, $Rewriter_active_clobber$41.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$active_insertions', $Rewriter_active_insertions$42 = function $$active_insertions() {
-          var self = this, $ret_or_13 = nil;
+        $def(self, '$active_insertions', function $$active_insertions() {
+          var self = this, $ret_or_1 = nil;
 
-          if ($truthy(($ret_or_13 = self.pending_insertions))) {
-            return $ret_or_13
+          if ($truthy(($ret_or_1 = self.pending_insertions))) {
+            return $ret_or_1
           } else {
             return self.insertions
           }
-        }, $Rewriter_active_insertions$42.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$active_clobber=', $Rewriter_active_clobber$eq$43 = function(value) {
+        $def(self, '$active_clobber=', function $Rewriter_active_clobber$eq$20(value) {
           var self = this;
 
           if ($truthy(self.pending_clobber)) {
@@ -5275,9 +4680,9 @@ Opal.modules["parser/source/rewriter"] = function(Opal) {
           } else {
             return (self.clobber = value)
           }
-        }, $Rewriter_active_clobber$eq$43.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$active_insertions=', $Rewriter_active_insertions$eq$44 = function(value) {
+        $def(self, '$active_insertions=', function $Rewriter_active_insertions$eq$21(value) {
           var self = this;
 
           if ($truthy(self.pending_insertions)) {
@@ -5285,29 +4690,28 @@ Opal.modules["parser/source/rewriter"] = function(Opal) {
           } else {
             return (self.insertions = value)
           }
-        }, $Rewriter_active_insertions$eq$44.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$adjacent?', $Rewriter_adjacent$ques$45 = function(range1, range2) {
-          var self = this, $ret_or_14 = nil;
+        $def(self, '$adjacent?', function $Rewriter_adjacent$ques$22(range1, range2) {
+          var $ret_or_1 = nil;
 
-          if ($truthy(($ret_or_14 = $rb_le(range1.$begin_pos(), range2.$end_pos())))) {
+          if ($truthy(($ret_or_1 = $rb_le(range1.$begin_pos(), range2.$end_pos())))) {
             return $rb_le(range2.$begin_pos(), range1.$end_pos())
           } else {
-            return $ret_or_14
+            return $ret_or_1
           }
-        }, $Rewriter_adjacent$ques$45.$$arity = 2);
-        Opal.const_set($nesting[0], 'DEPRECATION_WARNING', ["Parser::Source::Rewriter is deprecated.", "Please update your code to use Parser::Source::TreeRewriter instead"].$join("\n").$freeze());
-        return self.$extend($$($nesting, 'Deprecation'));
+        }, 2);
+        $const_set($nesting[0], 'DEPRECATION_WARNING', ["Parser::Source::Rewriter is deprecated.", "Please update your code to use Parser::Source::TreeRewriter instead"].$join("\n").$freeze());
+        return self.$extend($$('Deprecation'));
       })($nesting[0], null, $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/rewriter/action"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy;
+Opal.modules["parser/source/rewriter/action"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $def = Opal.def, $truthy = Opal.truthy, $eqeq = Opal.eqeq;
 
-  Opal.add_stubs(['$include', '$attr_reader', '$alias_method', '$freeze', '$<=>', '$begin_pos', '$range', '$zero?', '$order', '$==', '$length', '$empty?', '$inspect']);
+  Opal.add_stubs('include,attr_reader,alias_method,freeze,<=>,begin_pos,range,zero?,order,empty?,==,length,inspect');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -5316,92 +4720,68 @@ Opal.modules["parser/source/rewriter/action"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Source');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'Action');
 
-        var $nesting = [self].concat($parent_nesting), $Action_initialize$1, $Action_$lt_eq_gt$2, $Action_to_s$3;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.range = self.$$prototype.replacement = nil;
+        $proto.replacement = $proto.range = nil;
         
-        self.$include($$($nesting, 'Comparable'));
+        self.$include($$('Comparable'));
         self.$attr_reader("range", "replacement", "allow_multiple_insertions", "order");
         self.$alias_method("allow_multiple_insertions?", "allow_multiple_insertions");
         
-        Opal.def(self, '$initialize', $Action_initialize$1 = function $$initialize(range, replacement, allow_multiple_insertions, order) {
+        $def(self, '$initialize', function $$initialize(range, replacement, allow_multiple_insertions, order) {
           var self = this;
 
           
           
-          if (replacement == null) {
-            replacement = "";
-          };
+          if (replacement == null) replacement = "";;
           
-          if (allow_multiple_insertions == null) {
-            allow_multiple_insertions = false;
-          };
+          if (allow_multiple_insertions == null) allow_multiple_insertions = false;;
           
-          if (order == null) {
-            order = 0;
-          };
+          if (order == null) order = 0;;
           self.range = range;
           self.replacement = replacement;
           self.allow_multiple_insertions = allow_multiple_insertions;
           self.order = order;
           return self.$freeze();
-        }, $Action_initialize$1.$$arity = -2);
+        }, -2);
         
-        Opal.def(self, '$<=>', $Action_$lt_eq_gt$2 = function(other) {
+        $def(self, '$<=>', function $Action_$lt_eq_gt$1(other) {
           var self = this, result = nil;
 
           
           result = self.$range().$begin_pos()['$<=>'](other.$range().$begin_pos());
-          if ($truthy(result['$zero?']())) {
-          } else {
+          if (!$truthy(result['$zero?']())) {
             return result
           };
           return self.$order()['$<=>'](other.$order());
-        }, $Action_$lt_eq_gt$2.$$arity = 1);
-        return (Opal.def(self, '$to_s', $Action_to_s$3 = function $$to_s() {
-          var self = this, $ret_or_1 = nil;
+        }, 1);
+        return $def(self, '$to_s', function $$to_s() {
+          var self = this;
 
-          if ($truthy((function() {if ($truthy(($ret_or_1 = self.range.$length()['$=='](0)))) {
-            return self.replacement['$empty?']()
-          } else {
-            return $ret_or_1
-          }; return nil; })())) {
+          if (($eqeq(self.range.$length(), 0) && ($truthy(self.replacement['$empty?']())))) {
             return "do nothing"
-          } else if (self.range.$length()['$=='](0)) {
-            return "" + "insert " + (self.replacement.$inspect())
+          } else if ($eqeq(self.range.$length(), 0)) {
+            return "insert " + (self.replacement.$inspect())
           } else if ($truthy(self.replacement['$empty?']())) {
-            return "" + "remove " + (self.range.$length()) + " character(s)"
+            return "remove " + (self.range.$length()) + " character(s)"
           } else {
-            return "" + "replace " + (self.range.$length()) + " character(s) with " + (self.replacement.$inspect())
+            return "replace " + (self.range.$length()) + " character(s) with " + (self.replacement.$inspect())
           }
-        }, $Action_to_s$3.$$arity = 0), nil) && 'to_s';
-      })($$($nesting, 'Rewriter'), null, $nesting)
+        }, 0);
+      })($$('Rewriter'), null, $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/tree_rewriter"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $hash2 = Opal.hash2, $lambda = Opal.lambda, $gvars = Opal.gvars, $send = Opal.send, $truthy = Opal.truthy, $range = Opal.range, $hash = Opal.hash, $slice = Opal.slice;
+Opal.modules["parser/source/tree_rewriter"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $hash2 = Opal.hash2, $lambda = Opal.lambda, $gvars = Opal.gvars, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $def = Opal.def, $eqeq = Opal.eqeq, $truthy = Opal.truthy, $rb_plus = Opal.rb_plus, $const_set = Opal.const_set, $eqeqeq = Opal.eqeqeq, $range = Opal.range, $to_ary = Opal.to_ary, $hash = Opal.hash, $rb_gt = Opal.rb_gt, $rb_lt = Opal.rb_lt, $slice = Opal.slice;
 
-  Opal.add_stubs(['$attr_reader', '$new', '$puts', '$render', '$consumer=', '$-', '$freeze', '$check_policy_validity', '$method', '$adjust', '$source_range', '$empty?', '$==', '$source_buffer', '$raise', '$combine', '$action_root', '$merge!', '$dup', '$contract', '$+', '$begin_pos', '$range', '$end_pos', '$check_range_validity', '$moved', '$to_s', '$replace', '$wrap', '$source', '$each', '$ordered_replacements', '$<<', '$[]', '$length', '$join', '$nested_actions', '$class', '$name', '$action_summary', '$warn_of_deprecation', '$insert_before', '$insert_after', '$extend', '$protected', '$private', '$as_replacements', '$size', '$===', '$first', '$map', '$to_range', '$inspect', '$values', '$<', '$>', '$trigger_policy', '$process']);
+  Opal.add_stubs('attr_reader,new,puts,render,consumer=,-,freeze,check_policy_validity,method,adjust,source_range,empty?,==,source_buffer,raise,combine,action_root,merge!,dup,contract,+,begin_pos,range,end_pos,check_range_validity,moved,to_s,replace,wrap,source,each,ordered_replacements,<<,[],length,join,nested_actions,class,name,action_summary,warn_of_deprecation,insert_before,insert_after,extend,protected,private,as_replacements,===,size,first,map,to_range,inspect,values,>,<,trigger_policy,process');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -5415,15 +4795,15 @@ Opal.modules["parser/source/tree_rewriter"] = function(Opal) {
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'TreeRewriter');
 
-        var $nesting = [self].concat($parent_nesting), $TreeRewriter_initialize$1, $TreeRewriter_empty$ques$3, $TreeRewriter_merge$excl$4, $TreeRewriter_merge$5, $TreeRewriter_import$excl$6, $TreeRewriter_replace$7, $TreeRewriter_wrap$8, $TreeRewriter_remove$9, $TreeRewriter_insert_before$10, $TreeRewriter_insert_after$11, $TreeRewriter_process$12, $TreeRewriter_as_replacements$14, $TreeRewriter_as_nested_actions$15, $TreeRewriter_transaction$16, $TreeRewriter_in_transaction$ques$17, $TreeRewriter_inspect$18, $TreeRewriter_insert_before_multi$19, $TreeRewriter_insert_after_multi$20, $TreeRewriter_action_summary$21, $TreeRewriter_check_policy_validity$23, $TreeRewriter_combine$24, $TreeRewriter_check_range_validity$25, $TreeRewriter_enforce_policy$26, $TreeRewriter_trigger_policy$27;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.diagnostics = self.$$prototype.source_buffer = self.$$prototype.enforcer = self.$$prototype.action_root = self.$$prototype.in_transaction = self.$$prototype.policy = nil;
+        $proto.diagnostics = $proto.source_buffer = $proto.enforcer = $proto.action_root = $proto.in_transaction = $proto.policy = nil;
         
         self.$attr_reader("source_buffer");
         self.$attr_reader("diagnostics");
         
-        Opal.def(self, '$initialize', $TreeRewriter_initialize$1 = function $$initialize(source_buffer, $kwargs) {
-          var crossing_deletions, different_replacements, swallowed_insertions, $$2, self = this, $writer = nil, all_encompassing_range = nil;
+        $def(self, '$initialize', function $$initialize(source_buffer, $kwargs) {
+          var crossing_deletions, different_replacements, swallowed_insertions, self = this, $writer = nil, all_encompassing_range = nil;
 
           
           
@@ -5434,31 +4814,22 @@ Opal.modules["parser/source/tree_rewriter"] = function(Opal) {
           };
           
           crossing_deletions = $kwargs.$$smap["crossing_deletions"];
-          if (crossing_deletions == null) {
-            crossing_deletions = "accept"
-          };
+          if (crossing_deletions == null) crossing_deletions = "accept";
           
           different_replacements = $kwargs.$$smap["different_replacements"];
-          if (different_replacements == null) {
-            different_replacements = "accept"
-          };
+          if (different_replacements == null) different_replacements = "accept";
           
           swallowed_insertions = $kwargs.$$smap["swallowed_insertions"];
-          if (swallowed_insertions == null) {
-            swallowed_insertions = "accept"
-          };
-          self.diagnostics = $$$($$($nesting, 'Diagnostic'), 'Engine').$new();
+          if (swallowed_insertions == null) swallowed_insertions = "accept";
+          self.diagnostics = $$$($$('Diagnostic'), 'Engine').$new();
           
-          $writer = [$lambda(($$2 = function(diag){var self = $$2.$$s == null ? this : $$2.$$s;
-            if ($gvars.stderr == null) $gvars.stderr = nil;
+          $writer = [$lambda(function $$1(diag){            if ($gvars.stderr == null) $gvars.stderr = nil;
 
             
             
-            if (diag == null) {
-              diag = nil;
-            };
-            return $gvars.stderr.$puts(diag.$render());}, $$2.$$s = self, $$2.$$arity = 1, $$2))];
-          $send(self.diagnostics, 'consumer=', Opal.to_a($writer));
+            if (diag == null) diag = nil;;
+            return $gvars.stderr.$puts(diag.$render());}, 1)];
+          $send(self.diagnostics, 'consumer=', $to_a($writer));
           $writer[$rb_minus($writer["length"], 1)];;
           self.source_buffer = source_buffer;
           self.in_transaction = false;
@@ -5466,34 +4837,33 @@ Opal.modules["parser/source/tree_rewriter"] = function(Opal) {
           self.$check_policy_validity();
           self.enforcer = self.$method("enforce_policy");
           all_encompassing_range = self.source_buffer.$source_range().$adjust($hash2(["begin_pos", "end_pos"], {"begin_pos": -1, "end_pos": 1}));
-          return (self.action_root = $$$($$($nesting, 'TreeRewriter'), 'Action').$new(all_encompassing_range, self.enforcer));
-        }, $TreeRewriter_initialize$1.$$arity = -2);
+          return (self.action_root = $$$($$('TreeRewriter'), 'Action').$new(all_encompassing_range, self.enforcer));
+        }, -2);
         
-        Opal.def(self, '$empty?', $TreeRewriter_empty$ques$3 = function() {
+        $def(self, '$empty?', function $TreeRewriter_empty$ques$2() {
           var self = this;
 
           return self.action_root['$empty?']()
-        }, $TreeRewriter_empty$ques$3.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$merge!', $TreeRewriter_merge$excl$4 = function(with$) {
+        $def(self, '$merge!', function $TreeRewriter_merge$excl$3(with$) {
           var self = this;
 
           
-          if (self.$source_buffer()['$=='](with$.$source_buffer())) {
-          } else {
+          if (!$eqeq(self.$source_buffer(), with$.$source_buffer())) {
             self.$raise("TreeRewriter are not for the same source_buffer")
           };
           self.action_root = self.action_root.$combine(with$.$action_root());
           return self;
-        }, $TreeRewriter_merge$excl$4.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$merge', $TreeRewriter_merge$5 = function $$merge(with$) {
+        $def(self, '$merge', function $$merge(with$) {
           var self = this;
 
           return self.$dup()['$merge!'](with$)
-        }, $TreeRewriter_merge$5.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$import!', $TreeRewriter_import$excl$6 = function(foreign_rewriter, $kwargs) {
+        $def(self, '$import!', function $TreeRewriter_import$excl$4(foreign_rewriter, $kwargs) {
           var offset, self = this, contracted = nil, merge_effective_range = nil, merge_with = nil;
 
           
@@ -5505,93 +4875,86 @@ Opal.modules["parser/source/tree_rewriter"] = function(Opal) {
           };
           
           offset = $kwargs.$$smap["offset"];
-          if (offset == null) {
-            offset = 0
-          };
+          if (offset == null) offset = 0;
           if ($truthy(foreign_rewriter['$empty?']())) {
-            return self};
+            return self
+          };
           contracted = foreign_rewriter.$action_root().$contract();
-          merge_effective_range = $$$($$$($$$('::', 'Parser'), 'Source'), 'Range').$new(self.source_buffer, $rb_plus(contracted.$range().$begin_pos(), offset), $rb_plus(contracted.$range().$end_pos(), offset));
+          merge_effective_range = $$$($$$($$$('Parser'), 'Source'), 'Range').$new(self.source_buffer, $rb_plus(contracted.$range().$begin_pos(), offset), $rb_plus(contracted.$range().$end_pos(), offset));
           self.$check_range_validity(merge_effective_range);
           merge_with = contracted.$moved(self.source_buffer, offset);
           self.action_root = self.action_root.$combine(merge_with);
           return self;
-        }, $TreeRewriter_import$excl$6.$$arity = -2);
+        }, -2);
         
-        Opal.def(self, '$replace', $TreeRewriter_replace$7 = function $$replace(range, content) {
+        $def(self, '$replace', function $$replace(range, content) {
           var self = this;
 
           return self.$combine(range, $hash2(["replacement"], {"replacement": content}))
-        }, $TreeRewriter_replace$7.$$arity = 2);
+        }, 2);
         
-        Opal.def(self, '$wrap', $TreeRewriter_wrap$8 = function $$wrap(range, insert_before, insert_after) {
+        $def(self, '$wrap', function $$wrap(range, insert_before, insert_after) {
           var self = this;
 
           return self.$combine(range, $hash2(["insert_before", "insert_after"], {"insert_before": insert_before.$to_s(), "insert_after": insert_after.$to_s()}))
-        }, $TreeRewriter_wrap$8.$$arity = 3);
+        }, 3);
         
-        Opal.def(self, '$remove', $TreeRewriter_remove$9 = function $$remove(range) {
+        $def(self, '$remove', function $$remove(range) {
           var self = this;
 
           return self.$replace(range, "".$freeze())
-        }, $TreeRewriter_remove$9.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$insert_before', $TreeRewriter_insert_before$10 = function $$insert_before(range, content) {
+        $def(self, '$insert_before', function $$insert_before(range, content) {
           var self = this;
 
           return self.$wrap(range, content, nil)
-        }, $TreeRewriter_insert_before$10.$$arity = 2);
+        }, 2);
         
-        Opal.def(self, '$insert_after', $TreeRewriter_insert_after$11 = function $$insert_after(range, content) {
+        $def(self, '$insert_after', function $$insert_after(range, content) {
           var self = this;
 
           return self.$wrap(range, nil, content)
-        }, $TreeRewriter_insert_after$11.$$arity = 2);
+        }, 2);
         
-        Opal.def(self, '$process', $TreeRewriter_process$12 = function $$process() {
-          var $$13, self = this, source = nil, chunks = nil, last_end = nil;
+        $def(self, '$process', function $$process() {
+          var self = this, source = nil, chunks = nil, last_end = nil;
 
           
           source = self.source_buffer.$source();
           chunks = [];
           last_end = 0;
-          $send(self.action_root.$ordered_replacements(), 'each', [], ($$13 = function(range, replacement){var self = $$13.$$s == null ? this : $$13.$$s;
-
+          $send(self.action_root.$ordered_replacements(), 'each', [], function $$5(range, replacement){
             
             
-            if (range == null) {
-              range = nil;
-            };
+            if (range == null) range = nil;;
             
-            if (replacement == null) {
-              replacement = nil;
-            };
+            if (replacement == null) replacement = nil;;
             chunks['$<<'](source['$[]'](Opal.Range.$new(last_end,range.$begin_pos(), true)))['$<<'](replacement);
-            return (last_end = range.$end_pos());}, $$13.$$s = self, $$13.$$arity = 2, $$13));
+            return (last_end = range.$end_pos());}, 2);
           chunks['$<<'](source['$[]'](Opal.Range.$new(last_end,source.$length(), true)));
           return chunks.$join();
-        }, $TreeRewriter_process$12.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$as_replacements', $TreeRewriter_as_replacements$14 = function $$as_replacements() {
+        $def(self, '$as_replacements', function $$as_replacements() {
           var self = this;
 
           return self.action_root.$ordered_replacements()
-        }, $TreeRewriter_as_replacements$14.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$as_nested_actions', $TreeRewriter_as_nested_actions$15 = function $$as_nested_actions() {
+        $def(self, '$as_nested_actions', function $$as_nested_actions() {
           var self = this;
 
           return self.action_root.$nested_actions()
-        }, $TreeRewriter_as_nested_actions$15.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$transaction', $TreeRewriter_transaction$16 = function $$transaction() {
-          var $iter = $TreeRewriter_transaction$16.$$p, $yield = $iter || nil, self = this, previous = nil, restore_root = nil;
+        $def(self, '$transaction', function $$transaction() {
+          var $yield = $$transaction.$$p || nil, self = this, previous = nil, restore_root = nil;
 
-          if ($iter) $TreeRewriter_transaction$16.$$p = null;
+          delete $$transaction.$$p;
           return (function() { try {
           
-          if (($yield !== nil)) {
-          } else {
+          if (!($yield !== nil)) {
             self.$raise("" + (self.$class()) + "#" + ("transaction") + " requires block")
           };
           previous = self.in_transaction;
@@ -5601,130 +4964,123 @@ Opal.modules["parser/source/tree_rewriter"] = function(Opal) {
           restore_root = nil;
           return self;
           } finally {
-            ((function() {if ($truthy(restore_root)) {
-              return (self.action_root = restore_root)
-            } else {
-              return nil
-            }; return nil; })(), (self.in_transaction = previous))
+            (($truthy(restore_root) ? ((self.action_root = restore_root)) : nil), (self.in_transaction = previous))
           }; })()
-        }, $TreeRewriter_transaction$16.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$in_transaction?', $TreeRewriter_in_transaction$ques$17 = function() {
+        $def(self, '$in_transaction?', function $TreeRewriter_in_transaction$ques$6() {
           var self = this;
 
           return self.in_transaction
-        }, $TreeRewriter_in_transaction$ques$17.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$inspect', $TreeRewriter_inspect$18 = function $$inspect() {
+        $def(self, '$inspect', function $$inspect() {
           var self = this;
 
-          return "" + "#<" + (self.$class()) + " " + (self.$source_buffer().$name()) + ": " + (self.$action_summary()) + ">"
-        }, $TreeRewriter_inspect$18.$$arity = 0);
+          return "#<" + (self.$class()) + " " + (self.$source_buffer().$name()) + ": " + (self.$action_summary()) + ">"
+        }, 0);
         
-        Opal.def(self, '$insert_before_multi', $TreeRewriter_insert_before_multi$19 = function $$insert_before_multi(range, text) {
+        $def(self, '$insert_before_multi', function $$insert_before_multi(range, text) {
           var self = this;
 
           
           self.$class().$warn_of_deprecation();
           return self.$insert_before(range, text);
-        }, $TreeRewriter_insert_before_multi$19.$$arity = 2);
+        }, 2);
         
-        Opal.def(self, '$insert_after_multi', $TreeRewriter_insert_after_multi$20 = function $$insert_after_multi(range, text) {
+        $def(self, '$insert_after_multi', function $$insert_after_multi(range, text) {
           var self = this;
 
           
           self.$class().$warn_of_deprecation();
           return self.$insert_after(range, text);
-        }, $TreeRewriter_insert_after_multi$20.$$arity = 2);
-        Opal.const_set($nesting[0], 'DEPRECATION_WARNING', ["TreeRewriter#insert_before_multi and insert_before_multi exist only for legacy compatibility.", "Please update your code to use `wrap`, `insert_before` or `insert_after` instead."].$join("\n").$freeze());
-        self.$extend($$($nesting, 'Deprecation'));
+        }, 2);
+        $const_set($nesting[0], 'DEPRECATION_WARNING', ["TreeRewriter#insert_before_multi and insert_before_multi exist only for legacy compatibility.", "Please update your code to use `wrap`, `insert_before` or `insert_after` instead."].$join("\n").$freeze());
+        self.$extend($$('Deprecation'));
         self.$protected();
         self.$attr_reader("action_root");
         self.$private();
         
-        Opal.def(self, '$action_summary', $TreeRewriter_action_summary$21 = function $$action_summary() {
-          var $$22, self = this, replacements = nil, $case = nil, suffix = nil, parts = nil;
+        $def(self, '$action_summary', function $$action_summary() {
+          var self = this, replacements = nil, $ret_or_1 = nil, suffix = nil, parts = nil;
 
           
           replacements = self.$as_replacements();
-          $case = replacements.$size();
-          if ((0)['$===']($case)) {return "empty"}
-          else if ($range(1, 3, false)['$===']($case)) {nil}
-          else {
-          replacements = replacements.$first(3);
-          suffix = "…";};
-          parts = $send(replacements, 'map', [], ($$22 = function($mlhs_tmp1){var self = $$22.$$s == null ? this : $$22.$$s, $a, $b, range = nil, str = nil;
+          if ($eqeqeq(0, ($ret_or_1 = replacements.$size()))) {
+            return "empty"
+          } else if (!$eqeqeq($range(1, 3, false), $ret_or_1)) {
+            
+            replacements = replacements.$first(3);
+            suffix = "…";
+          };
+          parts = $send(replacements, 'map', [], function $$7($mlhs_tmp1){var $a, $b, range = nil, str = nil;
 
             
             
-            if ($mlhs_tmp1 == null) {
-              $mlhs_tmp1 = nil;
-            };
-            $b = $mlhs_tmp1, $a = Opal.to_ary($b), (range = ($a[0] == null ? nil : $a[0])), (str = ($a[1] == null ? nil : $a[1])), $b;
+            if ($mlhs_tmp1 == null) $mlhs_tmp1 = nil;;
+            $b = $mlhs_tmp1, $a = $to_ary($b), (range = ($a[0] == null ? nil : $a[0])), (str = ($a[1] == null ? nil : $a[1])), $b;
             if ($truthy(str['$empty?']())) {
-              return "" + "-" + (range.$to_range())
-            } else if (range.$size()['$=='](0)) {
-              return "" + "+" + (str.$inspect()) + "@" + (range.$begin_pos())
+              return "-" + (range.$to_range())
+            } else if ($eqeq(range.$size(), 0)) {
+              return "+" + (str.$inspect()) + "@" + (range.$begin_pos())
             } else {
-              return "" + "^" + (str.$inspect()) + "@" + (range.$to_range())
-            };}, $$22.$$s = self, $$22.$$arity = 1, $$22.$$has_top_level_mlhs_arg = true, $$22));
+              return "^" + (str.$inspect()) + "@" + (range.$to_range())
+            };}, {$$arity: 1, $$has_top_level_mlhs_arg: true});
           if ($truthy(suffix)) {
-            parts['$<<'](suffix)};
+            parts['$<<'](suffix)
+          };
           return parts.$join(", ");
-        }, $TreeRewriter_action_summary$21.$$arity = 0);
-        Opal.const_set($nesting[0], 'ACTIONS', ["accept", "warn", "raise"].$freeze());
+        }, 0);
+        $const_set($nesting[0], 'ACTIONS', ["accept", "warn", "raise"].$freeze());
         
-        Opal.def(self, '$check_policy_validity', $TreeRewriter_check_policy_validity$23 = function $$check_policy_validity() {
+        $def(self, '$check_policy_validity', function $$check_policy_validity() {
           var self = this, invalid = nil;
 
           
-          invalid = $rb_minus(self.policy.$values(), $$($nesting, 'ACTIONS'));
+          invalid = $rb_minus(self.policy.$values(), $$('ACTIONS'));
           if ($truthy(invalid['$empty?']())) {
             return nil
           } else {
-            return self.$raise($$($nesting, 'ArgumentError'), "" + "Invalid policy: " + (invalid.$join(", ")))
+            return self.$raise($$('ArgumentError'), "Invalid policy: " + (invalid.$join(", ")))
           };
-        }, $TreeRewriter_check_policy_validity$23.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$combine', $TreeRewriter_combine$24 = function $$combine(range, attributes) {
+        $def(self, '$combine', function $$combine(range, attributes) {
           var self = this, action = nil;
 
           
           range = self.$check_range_validity(range);
-          action = $$$($$($nesting, 'TreeRewriter'), 'Action').$new(range, self.enforcer, Opal.to_hash(attributes));
+          action = $$$($$('TreeRewriter'), 'Action').$new(range, self.enforcer, Opal.to_hash(attributes));
           self.action_root = self.action_root.$combine(action);
           return self;
-        }, $TreeRewriter_combine$24.$$arity = 2);
+        }, 2);
         
-        Opal.def(self, '$check_range_validity', $TreeRewriter_check_range_validity$25 = function $$check_range_validity(range) {
-          var self = this, $ret_or_1 = nil;
+        $def(self, '$check_range_validity', function $$check_range_validity(range) {
+          var self = this;
 
           
-          if ($truthy((function() {if ($truthy(($ret_or_1 = $rb_lt(range.$begin_pos(), 0)))) {
-            return $ret_or_1
-          } else {
-            return $rb_gt(range.$end_pos(), self.source_buffer.$source().$size())
-          }; return nil; })())) {
-            self.$raise($$($nesting, 'IndexError'), "" + "The range " + (range.$to_range()) + " is outside the bounds of the source")};
+          if (($truthy($rb_lt(range.$begin_pos(), 0)) || ($truthy($rb_gt(range.$end_pos(), self.source_buffer.$source().$size()))))) {
+            self.$raise($$('IndexError'), "The range " + (range.$to_range()) + " is outside the bounds of the source")
+          };
           return range;
-        }, $TreeRewriter_check_range_validity$25.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$enforce_policy', $TreeRewriter_enforce_policy$26 = function $$enforce_policy(event) {
-          var $iter = $TreeRewriter_enforce_policy$26.$$p, $yield = $iter || nil, self = this, values = nil;
+        $def(self, '$enforce_policy', function $$enforce_policy(event) {
+          var $yield = $$enforce_policy.$$p || nil, self = this, values = nil;
 
-          if ($iter) $TreeRewriter_enforce_policy$26.$$p = null;
+          delete $$enforce_policy.$$p;
           
-          if (self.policy['$[]'](event)['$==']("accept")) {
-            return nil};
-          if ($truthy((values = Opal.yieldX($yield, [])))) {
-          } else {
+          if ($eqeq(self.policy['$[]'](event), "accept")) {
+            return nil
+          };
+          if (!$truthy((values = Opal.yieldX($yield, [])))) {
             return nil
           };
           return self.$trigger_policy(event, Opal.to_hash(values));
-        }, $TreeRewriter_enforce_policy$26.$$arity = 1);
-        Opal.const_set($nesting[0], 'POLICY_TO_LEVEL', $hash2(["warn", "raise"], {"warn": "warning", "raise": "error"}).$freeze());
-        return (Opal.def(self, '$trigger_policy', $TreeRewriter_trigger_policy$27 = function $$trigger_policy(event, $kwargs) {
-          var range, conflict, arguments$, $a, $b, self = this, action = nil, $ret_or_2 = nil, diag = nil, highlights = nil;
+        }, 1);
+        $const_set($nesting[0], 'POLICY_TO_LEVEL', $hash2(["warn", "raise"], {"warn": "warning", "raise": "error"}).$freeze());
+        return $def(self, '$trigger_policy', function $$trigger_policy(event, $kwargs) {
+          var range, conflict, arguments$, $a, $b, self = this, action = nil, $ret_or_1 = nil, diag = nil, highlights = nil;
 
           
           
@@ -5735,62 +5091,36 @@ Opal.modules["parser/source/tree_rewriter"] = function(Opal) {
           };
           
           range = $kwargs.$$smap["range"];
-          if (range == null) {
-            range = self.$raise()
-          };
+          if (range == null) range = self.$raise();
           
           conflict = $kwargs.$$smap["conflict"];
-          if (conflict == null) {
-            conflict = nil
-          };
+          if (conflict == null) conflict = nil;
           
           arguments$ = Opal.kwrestargs($kwargs, {'range': true,'conflict': true});;
-          action = (function() {if ($truthy(($ret_or_2 = self.policy['$[]'](event)))) {
-            return $ret_or_2
-          } else {
-            return "raise"
-          }; return nil; })();
-          diag = $$$($$($nesting, 'Parser'), 'Diagnostic').$new($$($nesting, 'POLICY_TO_LEVEL')['$[]'](action), event, arguments$, range);
+          action = ($truthy(($ret_or_1 = self.policy['$[]'](event))) ? ($ret_or_1) : ("raise"));
+          diag = $$$($$('Parser'), 'Diagnostic').$new($$('POLICY_TO_LEVEL')['$[]'](action), event, arguments$, range);
           self.diagnostics.$process(diag);
           if ($truthy(conflict)) {
             
-            $b = conflict, $a = Opal.to_ary($b), (range = ($a[0] == null ? nil : $a[0])), (highlights = $slice.call($a, 1)), $b;
-            diag = $$$($$($nesting, 'Parser'), 'Diagnostic').$new($$($nesting, 'POLICY_TO_LEVEL')['$[]'](action), "" + (event) + "_conflict", arguments$, range, highlights);
-            self.diagnostics.$process(diag);};
-          if (action['$==']("raise")) {
-            return self.$raise($$$($$($nesting, 'Parser'), 'ClobberingError'), "Parser::Source::TreeRewriter detected clobbering")
+            $b = conflict, $a = $to_ary($b), (range = ($a[0] == null ? nil : $a[0])), (highlights = $slice.call($a, 1)), $b;
+            diag = $$$($$('Parser'), 'Diagnostic').$new($$('POLICY_TO_LEVEL')['$[]'](action), "" + (event) + "_conflict", arguments$, range, highlights);
+            self.diagnostics.$process(diag);
+          };
+          if ($eqeq(action, "raise")) {
+            return self.$raise($$$($$('Parser'), 'ClobberingError'), "Parser::Source::TreeRewriter detected clobbering")
           } else {
             return nil
           };
-        }, $TreeRewriter_trigger_policy$27.$$arity = -2), nil) && 'trigger_policy';
+        }, -2);
       })($nesting[0], null, $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/tree_rewriter/action"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_ge(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs >= rhs : lhs['$>='](rhs);
-  }
-  function $rb_le(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs <= rhs : lhs['$<='](rhs);
-  }
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $hash2 = Opal.hash2, $truthy = Opal.truthy, $send = Opal.send;
+Opal.modules["parser/source/tree_rewriter/action"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $hash2 = Opal.hash2, $def = Opal.def, $truthy = Opal.truthy, $send = Opal.send, $not = Opal.not, $rb_plus = Opal.rb_plus, $eqeq = Opal.eqeq, $to_a = Opal.to_a, $rb_gt = Opal.rb_gt, $rb_minus = Opal.rb_minus, $rb_ge = Opal.rb_ge, $eqeqeq = Opal.eqeqeq, $rb_le = Opal.rb_le, $rb_lt = Opal.rb_lt, $neqeq = Opal.neqeq;
 
-  Opal.add_stubs(['$attr_reader', '$freeze', '$empty?', '$do_combine', '$==', '$<<', '$begin', '$concat', '$flat_map', '$to_proc', '$end', '$!', '$insert_before', '$insert_after', '$replacement', '$raise', '$insertion?', '$with', '$begin_pos', '$range', '$first', '$children', '$end_pos', '$last', '$new', '$+', '$map', '$moved', '$protected', '$swallow', '$class', '$merge', '$place_in_hierarchy', '$analyse_hierarchy', '$[]', '$fuse_deletions', '$combine_children', '$inject', '$size', '$bsearch', '$bsearch_child_index', '$>', '$-', '$>=', '$===', '$<=>', '$<=', '$check_fusible', '$<', '$shift', '$pop', '$compact!', '$each', '$call', '$call_enforcer_for_merge', '$!=', '$select']);
+  Opal.add_stubs('attr_reader,freeze,empty?,do_combine,==,<<,begin,concat,flat_map,to_proc,end,!,insert_before,insert_after,replacement,raise,insertion?,with,begin_pos,range,first,children,end_pos,last,new,+,map,moved,protected,swallow,class,merge,place_in_hierarchy,analyse_hierarchy,[],fuse_deletions,combine_children,inject,size,bsearch,bsearch_child_index,>,-,>=,===,<=>,<=,check_fusible,<,shift,pop,compact!,each,call,call_enforcer_for_merge,!=,select');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -5799,18 +5129,18 @@ Opal.modules["parser/source/tree_rewriter/action"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Source');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'Action');
 
-        var $nesting = [self].concat($parent_nesting), $Action_initialize$1, $Action_combine$2, $Action_empty$ques$3, $Action_ordered_replacements$4, $Action_nested_actions$5, $Action_insertion$ques$6, $Action_contract$7, $Action_moved$8, $Action_with$10, $Action_do_combine$11, $Action_place_in_hierarchy$12, $Action_combine_children$13, $Action_fuse_deletions$15, $Action_bsearch_child_index$16, $Action_analyse_hierarchy$18, $Action_check_fusible$21, $Action_merge$24, $Action_call_enforcer_for_merge$25, $Action_swallow$27;
+        var $proto = self.$$prototype;
 
-        self.$$prototype.insert_before = self.$$prototype.insert_after = self.$$prototype.children = self.$$prototype.replacement = self.$$prototype.range = self.$$prototype.enforcer = nil;
+        $proto.insert_before = $proto.insert_after = $proto.children = $proto.replacement = $proto.range = $proto.enforcer = nil;
         
         self.$attr_reader("range", "replacement", "insert_before", "insert_after");
         
-        Opal.def(self, '$initialize', $Action_initialize$1 = function $$initialize(range, enforcer, $kwargs) {
+        $def(self, '$initialize', function $$initialize(range, enforcer, $kwargs) {
           var insert_before, replacement, insert_after, children, $a, self = this;
 
           
@@ -5822,149 +5152,126 @@ Opal.modules["parser/source/tree_rewriter/action"] = function(Opal) {
           };
           
           insert_before = $kwargs.$$smap["insert_before"];
-          if (insert_before == null) {
-            insert_before = ""
-          };
+          if (insert_before == null) insert_before = "";
           
           replacement = $kwargs.$$smap["replacement"];
-          if (replacement == null) {
-            replacement = nil
-          };
+          if (replacement == null) replacement = nil;
           
           insert_after = $kwargs.$$smap["insert_after"];
-          if (insert_after == null) {
-            insert_after = ""
-          };
+          if (insert_after == null) insert_after = "";
           
           children = $kwargs.$$smap["children"];
-          if (children == null) {
-            children = []
-          };
+          if (children == null) children = [];
           $a = [range, enforcer, children.$freeze(), insert_before.$freeze(), replacement, insert_after.$freeze()], (self.range = $a[0]), (self.enforcer = $a[1]), (self.children = $a[2]), (self.insert_before = $a[3]), (self.replacement = $a[4]), (self.insert_after = $a[5]), $a;
           return self.$freeze();
-        }, $Action_initialize$1.$$arity = -3);
+        }, -3);
         
-        Opal.def(self, '$combine', $Action_combine$2 = function $$combine(action) {
+        $def(self, '$combine', function $$combine(action) {
           var self = this;
 
           
           if ($truthy(action['$empty?']())) {
-            return self};
+            return self
+          };
           return self.$do_combine(action);
-        }, $Action_combine$2.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$empty?', $Action_empty$ques$3 = function() {
-          var self = this, $ret_or_1 = nil, $ret_or_2 = nil, $ret_or_3 = nil, $ret_or_4 = nil, $ret_or_5 = nil;
+        $def(self, '$empty?', function $Action_empty$ques$1() {
+          var self = this, $ret_or_1 = nil, $ret_or_2 = nil, $ret_or_3 = nil;
 
-          if ($truthy(($ret_or_1 = (function() {if ($truthy(($ret_or_2 = (function() {if ($truthy(($ret_or_3 = self.insert_before['$empty?']()))) {
-            return self.insert_after['$empty?']()
-          } else {
-            return $ret_or_3
-          }; return nil; })()))) {
-            return self.children['$empty?']()
-          } else {
-            return $ret_or_2
-          }; return nil; })()))) {
+          if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = ($truthy(($ret_or_3 = self.insert_before['$empty?']())) ? (self.insert_after['$empty?']()) : ($ret_or_3)))) ? (self.children['$empty?']()) : ($ret_or_2))))) {
             
-            if ($truthy(($ret_or_4 = self.replacement['$=='](nil)))) {
-              return $ret_or_4
+            if ($truthy(($ret_or_2 = self.replacement['$=='](nil)))) {
+              return $ret_or_2
             } else {
               
-              if ($truthy(($ret_or_5 = self.replacement['$empty?']()))) {
+              if ($truthy(($ret_or_3 = self.replacement['$empty?']()))) {
                 return self.range['$empty?']()
               } else {
-                return $ret_or_5
+                return $ret_or_3
               };
             };
           } else {
             return $ret_or_1
           }
-        }, $Action_empty$ques$3.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$ordered_replacements', $Action_ordered_replacements$4 = function $$ordered_replacements() {
+        $def(self, '$ordered_replacements', function $$ordered_replacements() {
           var self = this, reps = nil;
 
           
           reps = [];
-          if ($truthy(self.insert_before['$empty?']())) {
-          } else {
+          if (!$truthy(self.insert_before['$empty?']())) {
             reps['$<<']([self.range.$begin(), self.insert_before])
           };
           if ($truthy(self.replacement)) {
-            reps['$<<']([self.range, self.replacement])};
+            reps['$<<']([self.range, self.replacement])
+          };
           reps.$concat($send(self.children, 'flat_map', [], "ordered_replacements".$to_proc()));
-          if ($truthy(self.insert_after['$empty?']())) {
-          } else {
+          if (!$truthy(self.insert_after['$empty?']())) {
             reps['$<<']([self.range.$end(), self.insert_after])
           };
           return reps;
-        }, $Action_ordered_replacements$4.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$nested_actions', $Action_nested_actions$5 = function $$nested_actions() {
-          var self = this, actions = nil, $ret_or_6 = nil;
+        $def(self, '$nested_actions', function $$nested_actions() {
+          var self = this, actions = nil;
 
           
           actions = [];
-          if ($truthy((function() {if ($truthy(($ret_or_6 = self.insert_before['$empty?']()['$!']()))) {
-            return $ret_or_6
-          } else {
-            return self.insert_after['$empty?']()['$!']()
-          }; return nil; })())) {
-            actions['$<<'](["wrap", self.range, self.insert_before, self.insert_after])};
+          if (($not(self.insert_before['$empty?']()) || ($not(self.insert_after['$empty?']())))) {
+            actions['$<<'](["wrap", self.range, self.insert_before, self.insert_after])
+          };
           if ($truthy(self.replacement)) {
-            actions['$<<'](["replace", self.range, self.replacement])};
+            actions['$<<'](["replace", self.range, self.replacement])
+          };
           return actions.$concat($send(self.children, 'flat_map', [], "nested_actions".$to_proc()));
-        }, $Action_nested_actions$5.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$insertion?', $Action_insertion$ques$6 = function() {
-          var self = this, $ret_or_7 = nil, $ret_or_8 = nil, $ret_or_9 = nil;
+        $def(self, '$insertion?', function $Action_insertion$ques$2() {
+          var self = this, $ret_or_1 = nil, $ret_or_2 = nil;
 
-          if ($truthy(($ret_or_7 = (function() {if ($truthy(($ret_or_8 = self.$insert_before()['$empty?']()['$!']()))) {
-            return $ret_or_8
-          } else {
-            return self.$insert_after()['$empty?']()['$!']()
-          }; return nil; })()))) {
-            return $ret_or_7
+          if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = self.$insert_before()['$empty?']()['$!']())) ? ($ret_or_2) : (self.$insert_after()['$empty?']()['$!']()))))) {
+            return $ret_or_1
           } else {
             
-            if ($truthy(($ret_or_9 = self.$replacement()))) {
+            if ($truthy(($ret_or_2 = self.$replacement()))) {
               return self.$replacement()['$empty?']()['$!']()
             } else {
-              return $ret_or_9
+              return $ret_or_2
             };
           }
-        }, $Action_insertion$ques$6.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$contract', $Action_contract$7 = function $$contract() {
+        $def(self, '$contract', function $$contract() {
           var self = this, range = nil;
 
           
           if ($truthy(self['$empty?']())) {
-            self.$raise("Empty actions can not be contracted")};
+            self.$raise("Empty actions can not be contracted")
+          };
           if ($truthy(self['$insertion?']())) {
-            return self};
+            return self
+          };
           range = self.range.$with($hash2(["begin_pos", "end_pos"], {"begin_pos": self.$children().$first().$range().$begin_pos(), "end_pos": self.$children().$last().$range().$end_pos()}));
           return self.$with($hash2(["range"], {"range": range}));
-        }, $Action_contract$7.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$moved', $Action_moved$8 = function $$moved(source_buffer, offset) {
-          var $$9, self = this, moved_range = nil;
+        $def(self, '$moved', function $$moved(source_buffer, offset) {
+          var self = this, moved_range = nil;
 
           
-          moved_range = $$$($$$($$$('::', 'Parser'), 'Source'), 'Range').$new(source_buffer, $rb_plus(self.range.$begin_pos(), offset), $rb_plus(self.range.$end_pos(), offset));
-          return self.$with($hash2(["range", "children"], {"range": moved_range, "children": $send(self.$children(), 'map', [], ($$9 = function(child){var self = $$9.$$s == null ? this : $$9.$$s;
-
+          moved_range = $$$($$$($$$('Parser'), 'Source'), 'Range').$new(source_buffer, $rb_plus(self.range.$begin_pos(), offset), $rb_plus(self.range.$end_pos(), offset));
+          return self.$with($hash2(["range", "children"], {"range": moved_range, "children": $send(self.$children(), 'map', [], function $$3(child){
             
             
-            if (child == null) {
-              child = nil;
-            };
-            return child.$moved(source_buffer, offset);}, $$9.$$s = self, $$9.$$arity = 1, $$9))}));
-        }, $Action_moved$8.$$arity = 2);
+            if (child == null) child = nil;;
+            return child.$moved(source_buffer, offset);}, 1)}));
+        }, 2);
         self.$protected();
         self.$attr_reader("children");
         
-        Opal.def(self, '$with', $Action_with$10 = function($kwargs) {
+        $def(self, '$with', function $Action_with$4($kwargs) {
           var range, enforcer, children, insert_before, replacement, insert_after, self = this;
 
           
@@ -5976,255 +5283,184 @@ Opal.modules["parser/source/tree_rewriter/action"] = function(Opal) {
           };
           
           range = $kwargs.$$smap["range"];
-          if (range == null) {
-            range = self.range
-          };
+          if (range == null) range = self.range;
           
           enforcer = $kwargs.$$smap["enforcer"];
-          if (enforcer == null) {
-            enforcer = self.enforcer
-          };
+          if (enforcer == null) enforcer = self.enforcer;
           
           children = $kwargs.$$smap["children"];
-          if (children == null) {
-            children = self.children
-          };
+          if (children == null) children = self.children;
           
           insert_before = $kwargs.$$smap["insert_before"];
-          if (insert_before == null) {
-            insert_before = self.insert_before
-          };
+          if (insert_before == null) insert_before = self.insert_before;
           
           replacement = $kwargs.$$smap["replacement"];
-          if (replacement == null) {
-            replacement = self.replacement
-          };
+          if (replacement == null) replacement = self.replacement;
           
           insert_after = $kwargs.$$smap["insert_after"];
-          if (insert_after == null) {
-            insert_after = self.insert_after
-          };
+          if (insert_after == null) insert_after = self.insert_after;
           if ($truthy(replacement)) {
-            children = self.$swallow(children)};
+            children = self.$swallow(children)
+          };
           return self.$class().$new(range, enforcer, $hash2(["children", "insert_before", "replacement", "insert_after"], {"children": children, "insert_before": insert_before, "replacement": replacement, "insert_after": insert_after}));
-        }, $Action_with$10.$$arity = -1);
+        }, -1);
         
-        Opal.def(self, '$do_combine', $Action_do_combine$11 = function $$do_combine(action) {
+        $def(self, '$do_combine', function $$do_combine(action) {
           var self = this;
 
-          if (action.$range()['$=='](self.range)) {
+          if ($eqeq(action.$range(), self.range)) {
             return self.$merge(action)
           } else {
             return self.$place_in_hierarchy(action)
           }
-        }, $Action_do_combine$11.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$place_in_hierarchy', $Action_place_in_hierarchy$12 = function $$place_in_hierarchy(action) {
+        $def(self, '$place_in_hierarchy', function $$place_in_hierarchy(action) {
           var self = this, family = nil, extra_sibbling = nil;
 
           
           family = self.$analyse_hierarchy(action);
           if ($truthy(family['$[]']("fusible"))) {
-            return self.$fuse_deletions(action, family['$[]']("fusible"), [].concat(Opal.to_a(family['$[]']("sibbling_left"))).concat(Opal.to_a(family['$[]']("child"))).concat(Opal.to_a(family['$[]']("sibbling_right"))))
+            return self.$fuse_deletions(action, family['$[]']("fusible"), [].concat($to_a(family['$[]']("sibbling_left"))).concat($to_a(family['$[]']("child"))).concat($to_a(family['$[]']("sibbling_right"))))
           } else {
             
-            extra_sibbling = (function() {if ($truthy(family['$[]']("parent"))) {
-              return family['$[]']("parent").$do_combine(action)
-            } else if ($truthy(family['$[]']("child"))) {
-              return action.$with($hash2(["children", "enforcer"], {"children": family['$[]']("child"), "enforcer": self.enforcer})).$combine_children(action.$children())
-            } else {
-              return action
-            }; return nil; })();
-            return self.$with($hash2(["children"], {"children": [].concat(Opal.to_a(family['$[]']("sibbling_left"))).concat([extra_sibbling]).concat(Opal.to_a(family['$[]']("sibbling_right")))}));
+            extra_sibbling = ($truthy(family['$[]']("parent")) ? (family['$[]']("parent").$do_combine(action)) : ($truthy(family['$[]']("child")) ? (action.$with($hash2(["children", "enforcer"], {"children": family['$[]']("child"), "enforcer": self.enforcer})).$combine_children(action.$children())) : (action)));
+            return self.$with($hash2(["children"], {"children": [].concat($to_a(family['$[]']("sibbling_left"))).concat([extra_sibbling]).concat($to_a(family['$[]']("sibbling_right")))}));
           };
-        }, $Action_place_in_hierarchy$12.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$combine_children', $Action_combine_children$13 = function $$combine_children(more_children) {
-          var $$14, self = this;
-
-          return $send(more_children, 'inject', [self], ($$14 = function(parent, new_child){var self = $$14.$$s == null ? this : $$14.$$s;
+        $def(self, '$combine_children', function $$combine_children(more_children) {
+          var self = this;
 
+          return $send(more_children, 'inject', [self], function $$5(parent, new_child){
             
             
-            if (parent == null) {
-              parent = nil;
-            };
+            if (parent == null) parent = nil;;
             
-            if (new_child == null) {
-              new_child = nil;
-            };
-            return parent.$place_in_hierarchy(new_child);}, $$14.$$s = self, $$14.$$arity = 2, $$14))
-        }, $Action_combine_children$13.$$arity = 1);
+            if (new_child == null) new_child = nil;;
+            return parent.$place_in_hierarchy(new_child);}, 2)
+        }, 1);
         
-        Opal.def(self, '$fuse_deletions', $Action_fuse_deletions$15 = function $$fuse_deletions(action, fusible, other_sibblings) {
+        $def(self, '$fuse_deletions', function $$fuse_deletions(action, fusible, other_sibblings) {
           var self = this, without_fusible = nil, fused_range = nil, fused_deletion = nil;
 
           
           without_fusible = self.$with($hash2(["children"], {"children": other_sibblings}));
-          fused_range = $send([action].concat(Opal.to_a(fusible)), 'map', [], "range".$to_proc()).$inject("join");
+          fused_range = $send([action].concat($to_a(fusible)), 'map', [], "range".$to_proc()).$inject("join");
           fused_deletion = action.$with($hash2(["range"], {"range": fused_range}));
           return without_fusible.$do_combine(fused_deletion);
-        }, $Action_fuse_deletions$15.$$arity = 3);
+        }, 3);
         
-        Opal.def(self, '$bsearch_child_index', $Action_bsearch_child_index$16 = function $$bsearch_child_index(from) {
-          var $$17, $iter = $Action_bsearch_child_index$16.$$p, $yield = $iter || nil, self = this, size = nil, $ret_or_10 = nil;
+        $def(self, '$bsearch_child_index', function $$bsearch_child_index(from) {
+          var $yield = $$bsearch_child_index.$$p || nil, self = this, size = nil, $ret_or_1 = nil;
 
-          if ($iter) $Action_bsearch_child_index$16.$$p = null;
+          delete $$bsearch_child_index.$$p;
           
           
-          if (from == null) {
-            from = 0;
-          };
+          if (from == null) from = 0;;
           size = self.children.$size();
-          if ($truthy(($ret_or_10 = $send(Opal.Range.$new(from,size, true), 'bsearch', [], ($$17 = function(i){var self = $$17.$$s == null ? this : $$17.$$s;
+          if ($truthy(($ret_or_1 = $send(Opal.Range.$new(from,size, true), 'bsearch', [], function $$6(i){var self = $$6.$$s == null ? this : $$6.$$s;
             if (self.children == null) self.children = nil;
 
             
             
-            if (i == null) {
-              i = nil;
-            };
-            return Opal.yield1($yield, self.children['$[]'](i));;}, $$17.$$s = self, $$17.$$arity = 1, $$17))))) {
-            return $ret_or_10
+            if (i == null) i = nil;;
+            return Opal.yield1($yield, self.children['$[]'](i));;}, {$$arity: 1, $$s: self})))) {
+            return $ret_or_1
           } else {
             return size
           };
-        }, $Action_bsearch_child_index$16.$$arity = -1);
+        }, -1);
         
-        Opal.def(self, '$analyse_hierarchy', $Action_analyse_hierarchy$18 = function $$analyse_hierarchy(action) {
-          var $$19, $$20, self = this, r = nil, left_index = nil, start = nil, right_index = nil, center = nil, $case = nil, parent = nil, overlap_left = nil, overlap_right = nil, $ret_or_11 = nil, $ret_or_12 = nil, contained = nil, fusible = nil;
+        $def(self, '$analyse_hierarchy', function $$analyse_hierarchy(action) {
+          var self = this, r = nil, left_index = nil, start = nil, right_index = nil, center = nil, $ret_or_1 = nil, parent = nil, overlap_left = nil, overlap_right = nil, contained = nil, fusible = nil;
 
           
           r = action.$range();
-          left_index = $send(self, 'bsearch_child_index', [], ($$19 = function(child){var self = $$19.$$s == null ? this : $$19.$$s;
-
+          left_index = $send(self, 'bsearch_child_index', [], function $$7(child){
             
             
-            if (child == null) {
-              child = nil;
-            };
-            return $rb_gt(child.$range().$end_pos(), r.$begin_pos());}, $$19.$$s = self, $$19.$$arity = 1, $$19));
-          start = (function() {if (left_index['$=='](0)) {
-            return 0
-          } else {
-            return $rb_minus(left_index, 1)
-          }; return nil; })();
-          right_index = $send(self, 'bsearch_child_index', [start], ($$20 = function(child){var self = $$20.$$s == null ? this : $$20.$$s;
-
+            if (child == null) child = nil;;
+            return $rb_gt(child.$range().$end_pos(), r.$begin_pos());}, 1);
+          start = ($eqeq(left_index, 0) ? (0) : ($rb_minus(left_index, 1)));
+          right_index = $send(self, 'bsearch_child_index', [start], function $$8(child){
             
             
-            if (child == null) {
-              child = nil;
-            };
-            return $rb_ge(child.$range().$begin_pos(), r.$end_pos());}, $$20.$$s = self, $$20.$$arity = 1, $$20));
+            if (child == null) child = nil;;
+            return $rb_ge(child.$range().$begin_pos(), r.$end_pos());}, 1);
           center = $rb_minus(right_index, left_index);
-          $case = center;
-          if ((0)['$===']($case)) {nil}
-          else if ((-1)['$===']($case)) {
-          left_index = $rb_minus(left_index, 1);
-          right_index = $rb_plus(right_index, 1);
-          parent = self.children['$[]'](left_index);}
-          else {
-          overlap_left = self.children['$[]'](left_index).$range().$begin_pos()['$<=>'](r.$begin_pos());
-          overlap_right = self.children['$[]']($rb_minus(right_index, 1)).$range().$end_pos()['$<=>'](r.$end_pos());
-          if ($truthy((function() {if ($truthy(($ret_or_11 = (function() {if ($truthy(($ret_or_12 = center['$=='](1)))) {
-            return $rb_le(overlap_left, 0)
-          } else {
-            return $ret_or_12
-          }; return nil; })()))) {
-            return $rb_ge(overlap_right, 0)
-          } else {
-            return $ret_or_11
-          }; return nil; })())) {
-            parent = self.children['$[]'](left_index)
-          } else {
-            
-            contained = self.children['$[]'](Opal.Range.$new(left_index,right_index, true));
-            fusible = self.$check_fusible(action, (function() {if ($truthy($rb_lt(overlap_left, 0))) {
-              return contained.$shift()
-            } else {
-              return nil
-            }; return nil; })(), (function() {if ($truthy($rb_gt(overlap_right, 0))) {
-              return contained.$pop()
+          if (!$eqeqeq(0, ($ret_or_1 = center))) {
+            if ($eqeqeq(-1, $ret_or_1)) {
+              
+              left_index = $rb_minus(left_index, 1);
+              right_index = $rb_plus(right_index, 1);
+              parent = self.children['$[]'](left_index);
             } else {
-              return nil
-            }; return nil; })());
-          };};
+              
+              overlap_left = self.children['$[]'](left_index).$range().$begin_pos()['$<=>'](r.$begin_pos());
+              overlap_right = self.children['$[]']($rb_minus(right_index, 1)).$range().$end_pos()['$<=>'](r.$end_pos());
+              if ((($eqeq(center, 1) && ($truthy($rb_le(overlap_left, 0)))) && ($truthy($rb_ge(overlap_right, 0))))) {
+                parent = self.children['$[]'](left_index)
+              } else {
+                
+                contained = self.children['$[]'](Opal.Range.$new(left_index,right_index, true));
+                fusible = self.$check_fusible(action, ($truthy($rb_lt(overlap_left, 0)) ? (contained.$shift()) : nil), ($truthy($rb_gt(overlap_right, 0)) ? (contained.$pop()) : nil));
+              };
+            }
+          };
           return $hash2(["parent", "sibbling_left", "sibbling_right", "fusible", "child"], {"parent": parent, "sibbling_left": self.children['$[]'](Opal.Range.$new(0,left_index, true)), "sibbling_right": self.children['$[]'](Opal.Range.$new(right_index,self.children.$size(), true)), "fusible": fusible, "child": contained});
-        }, $Action_analyse_hierarchy$18.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$check_fusible', $Action_check_fusible$21 = function $$check_fusible(action, $a) {
-          var $post_args, fusible, $$22, self = this;
+        $def(self, '$check_fusible', function $$check_fusible(action, $a) {
+          var $post_args, fusible, self = this;
 
           
           
-          $post_args = Opal.slice.call(arguments, 1, arguments.length);
+          $post_args = Opal.slice.call(arguments, 1);
           
           fusible = $post_args;;
           fusible['$compact!']();
           if ($truthy(fusible['$empty?']())) {
-            return nil};
-          $send(fusible, 'each', [], ($$22 = function(child){var self = $$22.$$s == null ? this : $$22.$$s, $$23, kind = nil, $ret_or_13 = nil;
+            return nil
+          };
+          $send(fusible, 'each', [], function $$9(child){var self = $$9.$$s == null ? this : $$9.$$s, kind = nil;
             if (self.enforcer == null) self.enforcer = nil;
 
             
             
-            if (child == null) {
-              child = nil;
-            };
-            kind = (function() {if ($truthy((function() {if ($truthy(($ret_or_13 = action['$insertion?']()))) {
-              return $ret_or_13
-            } else {
-              return child['$insertion?']()
-            }; return nil; })())) {
-              return "crossing_insertions"
-            } else {
-              return "crossing_deletions"
-            }; return nil; })();
-            return $send(self.enforcer, 'call', [kind], ($$23 = function(){var self = $$23.$$s == null ? this : $$23.$$s;
-
-              return $hash2(["range", "conflict"], {"range": action.$range(), "conflict": child.$range()})}, $$23.$$s = self, $$23.$$arity = 0, $$23));}, $$22.$$s = self, $$22.$$arity = 1, $$22));
+            if (child == null) child = nil;;
+            kind = (($truthy(action['$insertion?']()) || ($truthy(child['$insertion?']()))) ? ("crossing_insertions") : ("crossing_deletions"));
+            return $send(self.enforcer, 'call', [kind], function $$10(){
+              return $hash2(["range", "conflict"], {"range": action.$range(), "conflict": child.$range()})}, 0);}, {$$arity: 1, $$s: self});
           return fusible;
-        }, $Action_check_fusible$21.$$arity = -2);
+        }, -2);
         
-        Opal.def(self, '$merge', $Action_merge$24 = function $$merge(action) {
-          var self = this, $ret_or_14 = nil;
+        $def(self, '$merge', function $$merge(action) {
+          var self = this, $ret_or_1 = nil;
 
           
           self.$call_enforcer_for_merge(action);
-          return self.$with($hash2(["insert_before", "replacement", "insert_after"], {"insert_before": "" + (action.$insert_before()) + (self.$insert_before()), "replacement": (function() {if ($truthy(($ret_or_14 = action.$replacement()))) {
-            return $ret_or_14
-          } else {
-            return self.replacement
-          }; return nil; })(), "insert_after": "" + (self.$insert_after()) + (action.$insert_after())})).$combine_children(action.$children());
-        }, $Action_merge$24.$$arity = 1);
+          return self.$with($hash2(["insert_before", "replacement", "insert_after"], {"insert_before": "" + (action.$insert_before()) + (self.$insert_before()), "replacement": ($truthy(($ret_or_1 = action.$replacement())) ? ($ret_or_1) : (self.replacement)), "insert_after": "" + (self.$insert_after()) + (action.$insert_after())})).$combine_children(action.$children());
+        }, 1);
         
-        Opal.def(self, '$call_enforcer_for_merge', $Action_call_enforcer_for_merge$25 = function $$call_enforcer_for_merge(action) {
-          var $$26, self = this;
+        $def(self, '$call_enforcer_for_merge', function $$call_enforcer_for_merge(action) {
+          var self = this;
 
-          return $send(self.enforcer, 'call', ["different_replacements"], ($$26 = function(){var self = $$26.$$s == null ? this : $$26.$$s, $ret_or_15 = nil, $ret_or_16 = nil;
+          return $send(self.enforcer, 'call', ["different_replacements"], function $$11(){var self = $$11.$$s == null ? this : $$11.$$s;
             if (self.replacement == null) self.replacement = nil;
             if (self.range == null) self.range = nil;
 
-            if ($truthy((function() {if ($truthy(($ret_or_15 = (function() {if ($truthy(($ret_or_16 = self.replacement))) {
-              return action.$replacement()
-            } else {
-              return $ret_or_16
-            }; return nil; })()))) {
-              return self.replacement['$!='](action.$replacement())
-            } else {
-              return $ret_or_15
-            }; return nil; })())) {
+            if ((($truthy(self.replacement) && ($truthy(action.$replacement()))) && ($neqeq(self.replacement, action.$replacement())))) {
               return $hash2(["range", "replacement", "other_replacement"], {"range": self.range, "replacement": action.$replacement(), "other_replacement": self.replacement})
             } else {
               return nil
-            }}, $$26.$$s = self, $$26.$$arity = 0, $$26))
-        }, $Action_call_enforcer_for_merge$25.$$arity = 1);
-        return (Opal.def(self, '$swallow', $Action_swallow$27 = function $$swallow(children) {
-          var $$28, self = this;
+            }}, {$$arity: 0, $$s: self})
+        }, 1);
+        return $def(self, '$swallow', function $$swallow(children) {
+          var self = this;
 
           
-          $send(self.enforcer, 'call', ["swallowed_insertions"], ($$28 = function(){var self = $$28.$$s == null ? this : $$28.$$s, insertions = nil;
+          $send(self.enforcer, 'call', ["swallowed_insertions"], function $$12(){var self = $$12.$$s == null ? this : $$12.$$s, insertions = nil;
             if (self.range == null) self.range = nil;
 
             
@@ -6233,22 +5469,18 @@ Opal.modules["parser/source/tree_rewriter/action"] = function(Opal) {
               return nil
             } else {
               return $hash2(["range", "conflict"], {"range": self.range, "conflict": $send(insertions, 'map', [], "range".$to_proc())})
-            };}, $$28.$$s = self, $$28.$$arity = 0, $$28));
+            };}, {$$arity: 0, $$s: self});
           return [];
-        }, $Action_swallow$27.$$arity = 1), nil) && 'swallow';
-      })($$($nesting, 'TreeRewriter'), null, $nesting)
+        }, 1);
+      })($$('TreeRewriter'), null)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/map"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $send = Opal.send, $truthy = Opal.truthy, $hash2 = Opal.hash2, $range = Opal.range;
+Opal.modules["parser/source/map"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $def = Opal.def, $send2 = Opal.send2, $find_super = Opal.find_super, $send = Opal.send, $truthy = Opal.truthy, $hash2 = Opal.hash2, $eqeq = Opal.eqeq, $range = Opal.range, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus;
 
-  Opal.add_stubs(['$attr_reader', '$freeze', '$line', '$alias_method', '$column', '$last_line', '$last_column', '$with', '$update_expression', '$==', '$class', '$reduce', '$map', '$instance_variables', '$instance_variable_get', '$send', '$inject', '$to_sym', '$[]', '$[]=', '$-', '$protected', '$tap', '$dup', '$to_proc']);
+  Opal.add_stubs('attr_reader,freeze,line,alias_method,column,last_line,last_column,with,update_expression,==,class,reduce,map,instance_variables,instance_variable_get,send,inject,to_sym,[],[]=,-,protected,tap,dup,to_proc');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -6259,147 +5491,133 @@ Opal.modules["parser/source/map"] = function(Opal) {
 
       var $nesting = [self].concat($parent_nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'Map');
 
-        var $nesting = [self].concat($parent_nesting), $Map_initialize$1, $Map_initialize_copy$2, $Map_node$eq$3, $Map_line$4, $Map_column$5, $Map_last_line$6, $Map_last_column$7, $Map_with_expression$8, $Map_$eq_eq$10, $Map_to_hash$12, $Map_with$14, $Map_update_expression$15;
+        var $proto = self.$$prototype;
 
-        self.$$prototype.node = self.$$prototype.expression = nil;
+        $proto.node = $proto.expression = nil;
         
         self.$attr_reader("node");
         self.$attr_reader("expression");
         
-        Opal.def(self, '$initialize', $Map_initialize$1 = function $$initialize(expression) {
+        $def(self, '$initialize', function $$initialize(expression) {
           var self = this;
 
           return (self.expression = expression)
-        }, $Map_initialize$1.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$initialize_copy', $Map_initialize_copy$2 = function $$initialize_copy(other) {
-          var $iter = $Map_initialize_copy$2.$$p, $yield = $iter || nil, self = this, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        $def(self, '$initialize_copy', function $$initialize_copy(other) {
+          var $yield = $$initialize_copy.$$p || nil, self = this;
 
-          if ($iter) $Map_initialize_copy$2.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$initialize_copy.$$p;
           
-          $send2(self, $find_super(self, 'initialize_copy', $Map_initialize_copy$2, false, true), 'initialize_copy', $zuper, $iter);
+          $send2(self, $find_super(self, 'initialize_copy', $$initialize_copy, false, true), 'initialize_copy', [other], $yield);
           return (self.node = nil);
-        }, $Map_initialize_copy$2.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$node=', $Map_node$eq$3 = function(node) {
+        $def(self, '$node=', function $Map_node$eq$1(node) {
           var self = this;
 
           
           self.node = node;
           self.$freeze();
           return self.node;
-        }, $Map_node$eq$3.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$line', $Map_line$4 = function $$line() {
+        $def(self, '$line', function $$line() {
           var self = this;
 
           return self.expression.$line()
-        }, $Map_line$4.$$arity = 0);
+        }, 0);
         self.$alias_method("first_line", "line");
         
-        Opal.def(self, '$column', $Map_column$5 = function $$column() {
+        $def(self, '$column', function $$column() {
           var self = this;
 
           return self.expression.$column()
-        }, $Map_column$5.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$last_line', $Map_last_line$6 = function $$last_line() {
+        $def(self, '$last_line', function $$last_line() {
           var self = this;
 
           return self.expression.$last_line()
-        }, $Map_last_line$6.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$last_column', $Map_last_column$7 = function $$last_column() {
+        $def(self, '$last_column', function $$last_column() {
           var self = this;
 
           return self.expression.$last_column()
-        }, $Map_last_column$7.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$with_expression', $Map_with_expression$8 = function $$with_expression(expression_l) {
-          var $$9, self = this;
-
-          return $send(self, 'with', [], ($$9 = function(map){var self = $$9.$$s == null ? this : $$9.$$s;
+        $def(self, '$with_expression', function $$with_expression(expression_l) {
+          var self = this;
 
+          return $send(self, 'with', [], function $$2(map){
             
             
-            if (map == null) {
-              map = nil;
-            };
-            return map.$update_expression(expression_l);}, $$9.$$s = self, $$9.$$arity = 1, $$9))
-        }, $Map_with_expression$8.$$arity = 1);
+            if (map == null) map = nil;;
+            return map.$update_expression(expression_l);}, 1)
+        }, 1);
         
-        Opal.def(self, '$==', $Map_$eq_eq$10 = function(other) {
-          var $$11, self = this, $ret_or_1 = nil;
+        $def(self, '$==', function $Map_$eq_eq$3(other) {
+          var self = this, $ret_or_1 = nil;
 
           if ($truthy(($ret_or_1 = other.$class()['$=='](self.$class())))) {
-            return $send(self.$instance_variables(), 'map', [], ($$11 = function(ivar){var self = $$11.$$s == null ? this : $$11.$$s;
+            return $send(self.$instance_variables(), 'map', [], function $$4(ivar){var self = $$4.$$s == null ? this : $$4.$$s;
 
               
               
-              if (ivar == null) {
-                ivar = nil;
-              };
-              return self.$instance_variable_get(ivar)['$=='](other.$send("instance_variable_get", ivar));}, $$11.$$s = self, $$11.$$arity = 1, $$11)).$reduce("&")
+              if (ivar == null) ivar = nil;;
+              return self.$instance_variable_get(ivar)['$=='](other.$send("instance_variable_get", ivar));}, {$$arity: 1, $$s: self}).$reduce("&")
           } else {
             return $ret_or_1
           }
-        }, $Map_$eq_eq$10.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$to_hash', $Map_to_hash$12 = function $$to_hash() {
-          var $$13, self = this;
+        $def(self, '$to_hash', function $$to_hash() {
+          var self = this;
 
-          return $send(self.$instance_variables(), 'inject', [$hash2([], {})], ($$13 = function(hash, ivar){var self = $$13.$$s == null ? this : $$13.$$s, $writer = nil;
+          return $send(self.$instance_variables(), 'inject', [$hash2([], {})], function $$5(hash, ivar){var self = $$5.$$s == null ? this : $$5.$$s, $writer = nil;
 
             
             
-            if (hash == null) {
-              hash = nil;
-            };
+            if (hash == null) hash = nil;;
             
-            if (ivar == null) {
-              ivar = nil;
+            if (ivar == null) ivar = nil;;
+            if ($eqeq(ivar.$to_sym(), "@node")) {
+              return hash;
             };
-            if (ivar.$to_sym()['$==']("@node")) {
-              return hash;};
             
             $writer = [ivar['$[]']($range(1, -1, false)).$to_sym(), self.$instance_variable_get(ivar)];
-            $send(hash, '[]=', Opal.to_a($writer));
+            $send(hash, '[]=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
-            return hash;}, $$13.$$s = self, $$13.$$arity = 2, $$13))
-        }, $Map_to_hash$12.$$arity = 0);
+            return hash;}, {$$arity: 2, $$s: self})
+        }, 0);
         self.$protected();
         
-        Opal.def(self, '$with', $Map_with$14 = function() {
-          var $iter = $Map_with$14.$$p, block = $iter || nil, self = this;
+        $def(self, '$with', function $Map_with$6() {
+          var block = $Map_with$6.$$p || nil, self = this;
 
-          if ($iter) $Map_with$14.$$p = null;
+          delete $Map_with$6.$$p;
           
-          
-          if ($iter) $Map_with$14.$$p = null;;
+          ;
           return $send(self.$dup(), 'tap', [], block.$to_proc());
-        }, $Map_with$14.$$arity = 0);
-        return (Opal.def(self, '$update_expression', $Map_update_expression$15 = function $$update_expression(expression_l) {
+        }, 0);
+        return $def(self, '$update_expression', function $$update_expression(expression_l) {
           var self = this;
 
           return (self.expression = expression_l)
-        }, $Map_update_expression$15.$$arity = 1), nil) && 'update_expression';
-      })($nesting[0], null, $nesting)
+        }, 1);
+      })($nesting[0], null)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/map/operator"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["parser/source/map/operator"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def;
 
-  Opal.add_stubs(['$attr_reader']);
+  Opal.add_stubs('attr_reader');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -6408,33 +5626,31 @@ Opal.modules["parser/source/map/operator"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Source');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'Operator');
 
-        var $nesting = [self].concat($parent_nesting), $Operator_initialize$1;
-
+        
         
         self.$attr_reader("operator");
-        return (Opal.def(self, '$initialize', $Operator_initialize$1 = function $$initialize(operator, expression) {
-          var $iter = $Operator_initialize$1.$$p, $yield = $iter || nil, self = this;
+        return $def(self, '$initialize', function $$initialize(operator, expression) {
+          var $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $Operator_initialize$1.$$p = null;
+          delete $$initialize.$$p;
           
           self.operator = operator;
-          return $send2(self, $find_super(self, 'initialize', $Operator_initialize$1, false, true), 'initialize', [expression], null);
-        }, $Operator_initialize$1.$$arity = 2), nil) && 'initialize';
-      })($$($nesting, 'Map'), $$($nesting, 'Map'), $nesting)
+          return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [expression], null);
+        }, 2);
+      })($$('Map'), $$('Map'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/map/collection"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["parser/source/map/collection"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def;
 
-  Opal.add_stubs(['$attr_reader']);
+  Opal.add_stubs('attr_reader');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -6443,34 +5659,32 @@ Opal.modules["parser/source/map/collection"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Source');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'Collection');
 
-        var $nesting = [self].concat($parent_nesting), $Collection_initialize$1;
-
+        
         
         self.$attr_reader("begin");
         self.$attr_reader("end");
-        return (Opal.def(self, '$initialize', $Collection_initialize$1 = function $$initialize(begin_l, end_l, expression_l) {
-          var $a, $iter = $Collection_initialize$1.$$p, $yield = $iter || nil, self = this;
+        return $def(self, '$initialize', function $$initialize(begin_l, end_l, expression_l) {
+          var $a, $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $Collection_initialize$1.$$p = null;
+          delete $$initialize.$$p;
           
           $a = [begin_l, end_l], (self.begin = $a[0]), (self.end = $a[1]), $a;
-          return $send2(self, $find_super(self, 'initialize', $Collection_initialize$1, false, true), 'initialize', [expression_l], null);
-        }, $Collection_initialize$1.$$arity = 3), nil) && 'initialize';
-      })($$($nesting, 'Map'), $$($nesting, 'Map'), $nesting)
+          return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [expression_l], null);
+        }, 3);
+      })($$('Map'), $$('Map'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/map/constant"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $send = Opal.send;
+Opal.modules["parser/source/map/constant"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def, $send = Opal.send;
 
-  Opal.add_stubs(['$attr_reader', '$with', '$update_operator', '$protected']);
+  Opal.add_stubs('attr_reader,with,update_operator,protected');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -6479,55 +5693,50 @@ Opal.modules["parser/source/map/constant"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Source');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'Constant');
 
-        var $nesting = [self].concat($parent_nesting), $Constant_initialize$1, $Constant_with_operator$2, $Constant_update_operator$4;
-
+        
         
         self.$attr_reader("double_colon");
         self.$attr_reader("name");
         self.$attr_reader("operator");
         
-        Opal.def(self, '$initialize', $Constant_initialize$1 = function $$initialize(double_colon, name, expression) {
-          var $a, $iter = $Constant_initialize$1.$$p, $yield = $iter || nil, self = this;
+        $def(self, '$initialize', function $$initialize(double_colon, name, expression) {
+          var $a, $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $Constant_initialize$1.$$p = null;
+          delete $$initialize.$$p;
           
           $a = [double_colon, name], (self.double_colon = $a[0]), (self.name = $a[1]), $a;
-          return $send2(self, $find_super(self, 'initialize', $Constant_initialize$1, false, true), 'initialize', [expression], null);
-        }, $Constant_initialize$1.$$arity = 3);
+          return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [expression], null);
+        }, 3);
         
-        Opal.def(self, '$with_operator', $Constant_with_operator$2 = function $$with_operator(operator_l) {
-          var $$3, self = this;
-
-          return $send(self, 'with', [], ($$3 = function(map){var self = $$3.$$s == null ? this : $$3.$$s;
+        $def(self, '$with_operator', function $$with_operator(operator_l) {
+          var self = this;
 
+          return $send(self, 'with', [], function $$1(map){
             
             
-            if (map == null) {
-              map = nil;
-            };
-            return map.$update_operator(operator_l);}, $$3.$$s = self, $$3.$$arity = 1, $$3))
-        }, $Constant_with_operator$2.$$arity = 1);
+            if (map == null) map = nil;;
+            return map.$update_operator(operator_l);}, 1)
+        }, 1);
         self.$protected();
-        return (Opal.def(self, '$update_operator', $Constant_update_operator$4 = function $$update_operator(operator_l) {
+        return $def(self, '$update_operator', function $$update_operator(operator_l) {
           var self = this;
 
           return (self.operator = operator_l)
-        }, $Constant_update_operator$4.$$arity = 1), nil) && 'update_operator';
-      })($$($nesting, 'Map'), $$($nesting, 'Map'), $nesting)
+        }, 1);
+      })($$('Map'), $$('Map'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/map/variable"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $send = Opal.send;
+Opal.modules["parser/source/map/variable"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def, $send = Opal.send;
 
-  Opal.add_stubs(['$attr_reader', '$with', '$update_operator', '$protected']);
+  Opal.add_stubs('attr_reader,with,update_operator,protected');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -6536,58 +5745,51 @@ Opal.modules["parser/source/map/variable"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Source');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'Variable');
 
-        var $nesting = [self].concat($parent_nesting), $Variable_initialize$1, $Variable_with_operator$2, $Variable_update_operator$4;
-
+        
         
         self.$attr_reader("name");
         self.$attr_reader("operator");
         
-        Opal.def(self, '$initialize', $Variable_initialize$1 = function $$initialize(name_l, expression_l) {
-          var $iter = $Variable_initialize$1.$$p, $yield = $iter || nil, self = this;
+        $def(self, '$initialize', function $$initialize(name_l, expression_l) {
+          var $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $Variable_initialize$1.$$p = null;
+          delete $$initialize.$$p;
           
           
-          if (expression_l == null) {
-            expression_l = name_l;
-          };
+          if (expression_l == null) expression_l = name_l;;
           self.name = name_l;
-          return $send2(self, $find_super(self, 'initialize', $Variable_initialize$1, false, true), 'initialize', [expression_l], null);
-        }, $Variable_initialize$1.$$arity = -2);
+          return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [expression_l], null);
+        }, -2);
         
-        Opal.def(self, '$with_operator', $Variable_with_operator$2 = function $$with_operator(operator_l) {
-          var $$3, self = this;
-
-          return $send(self, 'with', [], ($$3 = function(map){var self = $$3.$$s == null ? this : $$3.$$s;
+        $def(self, '$with_operator', function $$with_operator(operator_l) {
+          var self = this;
 
+          return $send(self, 'with', [], function $$1(map){
             
             
-            if (map == null) {
-              map = nil;
-            };
-            return map.$update_operator(operator_l);}, $$3.$$s = self, $$3.$$arity = 1, $$3))
-        }, $Variable_with_operator$2.$$arity = 1);
+            if (map == null) map = nil;;
+            return map.$update_operator(operator_l);}, 1)
+        }, 1);
         self.$protected();
-        return (Opal.def(self, '$update_operator', $Variable_update_operator$4 = function $$update_operator(operator_l) {
+        return $def(self, '$update_operator', function $$update_operator(operator_l) {
           var self = this;
 
           return (self.operator = operator_l)
-        }, $Variable_update_operator$4.$$arity = 1), nil) && 'update_operator';
-      })($$($nesting, 'Map'), $$($nesting, 'Map'), $nesting)
+        }, 1);
+      })($$('Map'), $$('Map'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/map/keyword"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["parser/source/map/keyword"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def;
 
-  Opal.add_stubs(['$attr_reader']);
+  Opal.add_stubs('attr_reader');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -6596,36 +5798,34 @@ Opal.modules["parser/source/map/keyword"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Source');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'Keyword');
 
-        var $nesting = [self].concat($parent_nesting), $Keyword_initialize$1;
-
+        
         
         self.$attr_reader("keyword");
         self.$attr_reader("begin");
         self.$attr_reader("end");
-        return (Opal.def(self, '$initialize', $Keyword_initialize$1 = function $$initialize(keyword_l, begin_l, end_l, expression_l) {
-          var $a, $iter = $Keyword_initialize$1.$$p, $yield = $iter || nil, self = this;
+        return $def(self, '$initialize', function $$initialize(keyword_l, begin_l, end_l, expression_l) {
+          var $a, $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $Keyword_initialize$1.$$p = null;
+          delete $$initialize.$$p;
           
           self.keyword = keyword_l;
           $a = [begin_l, end_l], (self.begin = $a[0]), (self.end = $a[1]), $a;
-          return $send2(self, $find_super(self, 'initialize', $Keyword_initialize$1, false, true), 'initialize', [expression_l], null);
-        }, $Keyword_initialize$1.$$arity = 4), nil) && 'initialize';
-      })($$($nesting, 'Map'), $$($nesting, 'Map'), $nesting)
+          return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [expression_l], null);
+        }, 4);
+      })($$('Map'), $$('Map'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/map/definition"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["parser/source/map/definition"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def;
 
-  Opal.add_stubs(['$attr_reader', '$join']);
+  Opal.add_stubs('attr_reader,join');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -6634,40 +5834,39 @@ Opal.modules["parser/source/map/definition"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Source');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'Definition');
 
-        var $nesting = [self].concat($parent_nesting), $Definition_initialize$1;
+        var $proto = self.$$prototype;
 
-        self.$$prototype.keyword = self.$$prototype.end = nil;
+        $proto.keyword = $proto.end = nil;
         
         self.$attr_reader("keyword");
         self.$attr_reader("operator");
         self.$attr_reader("name");
         self.$attr_reader("end");
-        return (Opal.def(self, '$initialize', $Definition_initialize$1 = function $$initialize(keyword_l, operator_l, name_l, end_l) {
-          var $iter = $Definition_initialize$1.$$p, $yield = $iter || nil, self = this;
+        return $def(self, '$initialize', function $$initialize(keyword_l, operator_l, name_l, end_l) {
+          var $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $Definition_initialize$1.$$p = null;
+          delete $$initialize.$$p;
           
           self.keyword = keyword_l;
           self.operator = operator_l;
           self.name = name_l;
           self.end = end_l;
-          return $send2(self, $find_super(self, 'initialize', $Definition_initialize$1, false, true), 'initialize', [self.keyword.$join(self.end)], null);
-        }, $Definition_initialize$1.$$arity = 4), nil) && 'initialize';
-      })($$($nesting, 'Map'), $$($nesting, 'Map'), $nesting)
+          return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [self.keyword.$join(self.end)], null);
+        }, 4);
+      })($$('Map'), $$('Map'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/map/method_definition"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $truthy = Opal.truthy;
+Opal.modules["parser/source/map/method_definition"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $truthy = Opal.truthy, $def = Opal.def;
 
-  Opal.add_stubs(['$attr_reader', '$join']);
+  Opal.add_stubs('attr_reader,join');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -6676,46 +5875,41 @@ Opal.modules["parser/source/map/method_definition"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Source');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'MethodDefinition');
 
-        var $nesting = [self].concat($parent_nesting), $MethodDefinition_initialize$1;
+        var $proto = self.$$prototype;
 
-        self.$$prototype.keyword = nil;
+        $proto.keyword = nil;
         
         self.$attr_reader("keyword");
         self.$attr_reader("operator");
         self.$attr_reader("name");
         self.$attr_reader("end");
         self.$attr_reader("assignment");
-        return (Opal.def(self, '$initialize', $MethodDefinition_initialize$1 = function $$initialize(keyword_l, operator_l, name_l, end_l, assignment_l, body_l) {
-          var $iter = $MethodDefinition_initialize$1.$$p, $yield = $iter || nil, self = this, $ret_or_1 = nil;
+        return $def(self, '$initialize', function $$initialize(keyword_l, operator_l, name_l, end_l, assignment_l, body_l) {
+          var $yield = $$initialize.$$p || nil, self = this, $ret_or_1 = nil;
 
-          if ($iter) $MethodDefinition_initialize$1.$$p = null;
+          delete $$initialize.$$p;
           
           self.keyword = keyword_l;
           self.operator = operator_l;
           self.name = name_l;
           self.end = end_l;
           self.assignment = assignment_l;
-          return $send2(self, $find_super(self, 'initialize', $MethodDefinition_initialize$1, false, true), 'initialize', [self.keyword.$join((function() {if ($truthy(($ret_or_1 = end_l))) {
-            return $ret_or_1
-          } else {
-            return body_l
-          }; return nil; })())], null);
-        }, $MethodDefinition_initialize$1.$$arity = 6), nil) && 'initialize';
-      })($$($nesting, 'Map'), $$($nesting, 'Map'), $nesting)
+          return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [self.keyword.$join(($truthy(($ret_or_1 = end_l)) ? ($ret_or_1) : (body_l)))], null);
+        }, 6);
+      })($$('Map'), $$('Map'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/map/send"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $send = Opal.send;
+Opal.modules["parser/source/map/send"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def, $send = Opal.send;
 
-  Opal.add_stubs(['$attr_reader', '$with', '$update_operator', '$protected']);
+  Opal.add_stubs('attr_reader,with,update_operator,protected');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -6724,13 +5918,12 @@ Opal.modules["parser/source/map/send"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Source');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'Send');
 
-        var $nesting = [self].concat($parent_nesting), $Send_initialize$1, $Send_with_operator$2, $Send_update_operator$4;
-
+        
         
         self.$attr_reader("dot");
         self.$attr_reader("selector");
@@ -6738,45 +5931,41 @@ Opal.modules["parser/source/map/send"] = function(Opal) {
         self.$attr_reader("begin");
         self.$attr_reader("end");
         
-        Opal.def(self, '$initialize', $Send_initialize$1 = function $$initialize(dot_l, selector_l, begin_l, end_l, expression_l) {
-          var $a, $iter = $Send_initialize$1.$$p, $yield = $iter || nil, self = this;
+        $def(self, '$initialize', function $$initialize(dot_l, selector_l, begin_l, end_l, expression_l) {
+          var $a, $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $Send_initialize$1.$$p = null;
+          delete $$initialize.$$p;
           
           self.dot = dot_l;
           self.selector = selector_l;
           $a = [begin_l, end_l], (self.begin = $a[0]), (self.end = $a[1]), $a;
-          return $send2(self, $find_super(self, 'initialize', $Send_initialize$1, false, true), 'initialize', [expression_l], null);
-        }, $Send_initialize$1.$$arity = 5);
+          return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [expression_l], null);
+        }, 5);
         
-        Opal.def(self, '$with_operator', $Send_with_operator$2 = function $$with_operator(operator_l) {
-          var $$3, self = this;
-
-          return $send(self, 'with', [], ($$3 = function(map){var self = $$3.$$s == null ? this : $$3.$$s;
+        $def(self, '$with_operator', function $$with_operator(operator_l) {
+          var self = this;
 
+          return $send(self, 'with', [], function $$1(map){
             
             
-            if (map == null) {
-              map = nil;
-            };
-            return map.$update_operator(operator_l);}, $$3.$$s = self, $$3.$$arity = 1, $$3))
-        }, $Send_with_operator$2.$$arity = 1);
+            if (map == null) map = nil;;
+            return map.$update_operator(operator_l);}, 1)
+        }, 1);
         self.$protected();
-        return (Opal.def(self, '$update_operator', $Send_update_operator$4 = function $$update_operator(operator_l) {
+        return $def(self, '$update_operator', function $$update_operator(operator_l) {
           var self = this;
 
           return (self.operator = operator_l)
-        }, $Send_update_operator$4.$$arity = 1), nil) && 'update_operator';
-      })($$($nesting, 'Map'), $$($nesting, 'Map'), $nesting)
+        }, 1);
+      })($$('Map'), $$('Map'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/map/index"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $send = Opal.send;
+Opal.modules["parser/source/map/index"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def, $send = Opal.send;
 
-  Opal.add_stubs(['$attr_reader', '$with', '$update_operator', '$protected']);
+  Opal.add_stubs('attr_reader,with,update_operator,protected');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -6785,56 +5974,51 @@ Opal.modules["parser/source/map/index"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Source');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'Index');
 
-        var $nesting = [self].concat($parent_nesting), $Index_initialize$1, $Index_with_operator$2, $Index_update_operator$4;
-
+        
         
         self.$attr_reader("begin");
         self.$attr_reader("end");
         self.$attr_reader("operator");
         
-        Opal.def(self, '$initialize', $Index_initialize$1 = function $$initialize(begin_l, end_l, expression_l) {
-          var $a, $iter = $Index_initialize$1.$$p, $yield = $iter || nil, self = this;
+        $def(self, '$initialize', function $$initialize(begin_l, end_l, expression_l) {
+          var $a, $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $Index_initialize$1.$$p = null;
+          delete $$initialize.$$p;
           
           $a = [begin_l, end_l], (self.begin = $a[0]), (self.end = $a[1]), $a;
           self.operator = nil;
-          return $send2(self, $find_super(self, 'initialize', $Index_initialize$1, false, true), 'initialize', [expression_l], null);
-        }, $Index_initialize$1.$$arity = 3);
+          return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [expression_l], null);
+        }, 3);
         
-        Opal.def(self, '$with_operator', $Index_with_operator$2 = function $$with_operator(operator_l) {
-          var $$3, self = this;
-
-          return $send(self, 'with', [], ($$3 = function(map){var self = $$3.$$s == null ? this : $$3.$$s;
+        $def(self, '$with_operator', function $$with_operator(operator_l) {
+          var self = this;
 
+          return $send(self, 'with', [], function $$1(map){
             
             
-            if (map == null) {
-              map = nil;
-            };
-            return map.$update_operator(operator_l);}, $$3.$$s = self, $$3.$$arity = 1, $$3))
-        }, $Index_with_operator$2.$$arity = 1);
+            if (map == null) map = nil;;
+            return map.$update_operator(operator_l);}, 1)
+        }, 1);
         self.$protected();
-        return (Opal.def(self, '$update_operator', $Index_update_operator$4 = function $$update_operator(operator_l) {
+        return $def(self, '$update_operator', function $$update_operator(operator_l) {
           var self = this;
 
           return (self.operator = operator_l)
-        }, $Index_update_operator$4.$$arity = 1), nil) && 'update_operator';
-      })($$($nesting, 'Map'), $$($nesting, 'Map'), $nesting)
+        }, 1);
+      })($$('Map'), $$('Map'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/map/condition"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["parser/source/map/condition"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def;
 
-  Opal.add_stubs(['$attr_reader']);
+  Opal.add_stubs('attr_reader');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -6843,37 +6027,35 @@ Opal.modules["parser/source/map/condition"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Source');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'Condition');
 
-        var $nesting = [self].concat($parent_nesting), $Condition_initialize$1;
-
+        
         
         self.$attr_reader("keyword");
         self.$attr_reader("begin");
         self.$attr_reader("else");
         self.$attr_reader("end");
-        return (Opal.def(self, '$initialize', $Condition_initialize$1 = function $$initialize(keyword_l, begin_l, else_l, end_l, expression_l) {
-          var $a, $iter = $Condition_initialize$1.$$p, $yield = $iter || nil, self = this;
+        return $def(self, '$initialize', function $$initialize(keyword_l, begin_l, else_l, end_l, expression_l) {
+          var $a, $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $Condition_initialize$1.$$p = null;
+          delete $$initialize.$$p;
           
           self.keyword = keyword_l;
           $a = [begin_l, else_l, end_l], (self.begin = $a[0]), (self["else"] = $a[1]), (self.end = $a[2]), $a;
-          return $send2(self, $find_super(self, 'initialize', $Condition_initialize$1, false, true), 'initialize', [expression_l], null);
-        }, $Condition_initialize$1.$$arity = 5), nil) && 'initialize';
-      })($$($nesting, 'Map'), $$($nesting, 'Map'), $nesting)
+          return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [expression_l], null);
+        }, 5);
+      })($$('Map'), $$('Map'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/map/ternary"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["parser/source/map/ternary"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def;
 
-  Opal.add_stubs(['$attr_reader']);
+  Opal.add_stubs('attr_reader');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -6882,34 +6064,32 @@ Opal.modules["parser/source/map/ternary"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Source');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'Ternary');
 
-        var $nesting = [self].concat($parent_nesting), $Ternary_initialize$1;
-
+        
         
         self.$attr_reader("question");
         self.$attr_reader("colon");
-        return (Opal.def(self, '$initialize', $Ternary_initialize$1 = function $$initialize(question_l, colon_l, expression_l) {
-          var $a, $iter = $Ternary_initialize$1.$$p, $yield = $iter || nil, self = this;
+        return $def(self, '$initialize', function $$initialize(question_l, colon_l, expression_l) {
+          var $a, $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $Ternary_initialize$1.$$p = null;
+          delete $$initialize.$$p;
           
           $a = [question_l, colon_l], (self.question = $a[0]), (self.colon = $a[1]), $a;
-          return $send2(self, $find_super(self, 'initialize', $Ternary_initialize$1, false, true), 'initialize', [expression_l], null);
-        }, $Ternary_initialize$1.$$arity = 3), nil) && 'initialize';
-      })($$($nesting, 'Map'), $$($nesting, 'Map'), $nesting)
+          return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [expression_l], null);
+        }, 3);
+      })($$('Map'), $$('Map'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/map/for"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["parser/source/map/for"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def;
 
-  Opal.add_stubs(['$attr_reader']);
+  Opal.add_stubs('attr_reader');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -6918,35 +6098,33 @@ Opal.modules["parser/source/map/for"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Source');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'For');
 
-        var $nesting = [self].concat($parent_nesting), $For_initialize$1;
-
+        
         
         self.$attr_reader("keyword", "in");
         self.$attr_reader("begin", "end");
-        return (Opal.def(self, '$initialize', $For_initialize$1 = function $$initialize(keyword_l, in_l, begin_l, end_l, expression_l) {
-          var $a, $iter = $For_initialize$1.$$p, $yield = $iter || nil, self = this;
+        return $def(self, '$initialize', function $$initialize(keyword_l, in_l, begin_l, end_l, expression_l) {
+          var $a, $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $For_initialize$1.$$p = null;
+          delete $$initialize.$$p;
           
           $a = [keyword_l, in_l], (self.keyword = $a[0]), (self["in"] = $a[1]), $a;
           $a = [begin_l, end_l], (self.begin = $a[0]), (self.end = $a[1]), $a;
-          return $send2(self, $find_super(self, 'initialize', $For_initialize$1, false, true), 'initialize', [expression_l], null);
-        }, $For_initialize$1.$$arity = 5), nil) && 'initialize';
-      })($$($nesting, 'Map'), $$($nesting, 'Map'), $nesting)
+          return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [expression_l], null);
+        }, 5);
+      })($$('Map'), $$('Map'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/map/rescue_body"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["parser/source/map/rescue_body"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def;
 
-  Opal.add_stubs(['$attr_reader']);
+  Opal.add_stubs('attr_reader');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -6955,37 +6133,35 @@ Opal.modules["parser/source/map/rescue_body"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Source');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'RescueBody');
 
-        var $nesting = [self].concat($parent_nesting), $RescueBody_initialize$1;
-
+        
         
         self.$attr_reader("keyword");
         self.$attr_reader("assoc");
         self.$attr_reader("begin");
-        return (Opal.def(self, '$initialize', $RescueBody_initialize$1 = function $$initialize(keyword_l, assoc_l, begin_l, expression_l) {
-          var $iter = $RescueBody_initialize$1.$$p, $yield = $iter || nil, self = this;
+        return $def(self, '$initialize', function $$initialize(keyword_l, assoc_l, begin_l, expression_l) {
+          var $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $RescueBody_initialize$1.$$p = null;
+          delete $$initialize.$$p;
           
           self.keyword = keyword_l;
           self.assoc = assoc_l;
           self.begin = begin_l;
-          return $send2(self, $find_super(self, 'initialize', $RescueBody_initialize$1, false, true), 'initialize', [expression_l], null);
-        }, $RescueBody_initialize$1.$$arity = 4), nil) && 'initialize';
-      })($$($nesting, 'Map'), $$($nesting, 'Map'), $nesting)
+          return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [expression_l], null);
+        }, 4);
+      })($$('Map'), $$('Map'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/map/heredoc"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["parser/source/map/heredoc"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def;
 
-  Opal.add_stubs(['$attr_reader']);
+  Opal.add_stubs('attr_reader');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -6994,35 +6170,33 @@ Opal.modules["parser/source/map/heredoc"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Source');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'Heredoc');
 
-        var $nesting = [self].concat($parent_nesting), $Heredoc_initialize$1;
-
+        
         
         self.$attr_reader("heredoc_body");
         self.$attr_reader("heredoc_end");
-        return (Opal.def(self, '$initialize', $Heredoc_initialize$1 = function $$initialize(begin_l, body_l, end_l) {
-          var $iter = $Heredoc_initialize$1.$$p, $yield = $iter || nil, self = this;
+        return $def(self, '$initialize', function $$initialize(begin_l, body_l, end_l) {
+          var $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $Heredoc_initialize$1.$$p = null;
+          delete $$initialize.$$p;
           
           self.heredoc_body = body_l;
           self.heredoc_end = end_l;
-          return $send2(self, $find_super(self, 'initialize', $Heredoc_initialize$1, false, true), 'initialize', [begin_l], null);
-        }, $Heredoc_initialize$1.$$arity = 3), nil) && 'initialize';
-      })($$($nesting, 'Map'), $$($nesting, 'Map'), $nesting)
+          return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [begin_l], null);
+        }, 3);
+      })($$('Map'), $$('Map'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/source/map/objc_kwarg"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["parser/source/map/objc_kwarg"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def;
 
-  Opal.add_stubs(['$attr_reader']);
+  Opal.add_stubs('attr_reader');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -7031,98 +6205,72 @@ Opal.modules["parser/source/map/objc_kwarg"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Source');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'ObjcKwarg');
 
-        var $nesting = [self].concat($parent_nesting), $ObjcKwarg_initialize$1;
-
+        
         
         self.$attr_reader("keyword");
         self.$attr_reader("operator");
         self.$attr_reader("argument");
-        return (Opal.def(self, '$initialize', $ObjcKwarg_initialize$1 = function $$initialize(keyword_l, operator_l, argument_l, expression_l) {
-          var $a, $iter = $ObjcKwarg_initialize$1.$$p, $yield = $iter || nil, self = this;
+        return $def(self, '$initialize', function $$initialize(keyword_l, operator_l, argument_l, expression_l) {
+          var $a, $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $ObjcKwarg_initialize$1.$$p = null;
+          delete $$initialize.$$p;
           
           $a = [keyword_l, operator_l, argument_l], (self.keyword = $a[0]), (self.operator = $a[1]), (self.argument = $a[2]), $a;
-          return $send2(self, $find_super(self, 'initialize', $ObjcKwarg_initialize$1, false, true), 'initialize', [expression_l], null);
-        }, $ObjcKwarg_initialize$1.$$arity = 4), nil) && 'initialize';
-      })($$($nesting, 'Map'), $$($nesting, 'Map'), $nesting)
+          return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [expression_l], null);
+        }, 4);
+      })($$('Map'), $$('Map'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/syntax_error"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["parser/syntax_error"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def;
 
-  Opal.add_stubs(['$attr_reader', '$message']);
+  Opal.add_stubs('attr_reader,message');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
-    var $nesting = [self].concat($parent_nesting);
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-    return (function($base, $super, $parent_nesting) {
+    return (function($base, $super) {
       var self = $klass($base, $super, 'SyntaxError');
 
-      var $nesting = [self].concat($parent_nesting), $SyntaxError_initialize$1;
-
+      
       
       self.$attr_reader("diagnostic");
-      return (Opal.def(self, '$initialize', $SyntaxError_initialize$1 = function $$initialize(diagnostic) {
-        var $iter = $SyntaxError_initialize$1.$$p, $yield = $iter || nil, self = this;
+      return $def(self, '$initialize', function $$initialize(diagnostic) {
+        var $yield = $$initialize.$$p || nil, self = this;
 
-        if ($iter) $SyntaxError_initialize$1.$$p = null;
+        delete $$initialize.$$p;
         
         self.diagnostic = diagnostic;
-        return $send2(self, $find_super(self, 'initialize', $SyntaxError_initialize$1, false, true), 'initialize', [diagnostic.$message()], null);
-      }, $SyntaxError_initialize$1.$$arity = 1), nil) && 'initialize';
-    })($nesting[0], $$($nesting, 'StandardError'), $nesting)
+        return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [diagnostic.$message()], null);
+      }, 1);
+    })($nesting[0], $$('StandardError'))
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/clobbering_error"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass;
+Opal.modules["parser/clobbering_error"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass;
 
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
-    var $nesting = [self].concat($parent_nesting);
-
-    return (function($base, $super, $parent_nesting) {
-      var self = $klass($base, $super, 'ClobberingError');
-
-      var $nesting = [self].concat($parent_nesting);
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return nil
-    })($nesting[0], $$($nesting, 'RuntimeError'), $nesting)
+    return ($klass($nesting[0], $$('RuntimeError'), 'ClobberingError'), nil)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/diagnostic"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_times(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs * rhs : lhs['$*'](rhs);
-  }
-  function $rb_ge(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs >= rhs : lhs['$>='](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $hash2 = Opal.hash2, $send = Opal.send;
+Opal.modules["parser/diagnostic"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $const_set = Opal.const_set, $truthy = Opal.truthy, $hash2 = Opal.hash2, $def = Opal.def, $eqeq = Opal.eqeq, $rb_plus = Opal.rb_plus, $rb_minus = Opal.rb_minus, $to_ary = Opal.to_ary, $rb_gt = Opal.rb_gt, $rb_times = Opal.rb_times, $send = Opal.send, $to_a = Opal.to_a, $rb_ge = Opal.rb_ge, $not = Opal.not, $neqeq = Opal.neqeq;
 
-  Opal.add_stubs(['$freeze', '$attr_reader', '$include?', '$raise', '$join', '$inspect', '$dup', '$compile', '$==', '$line', '$last_line', '$is?', '$+', '$message', '$render_line', '$first_line_only', '$last_line_only', '$-', '$source_buffer', '$decompose_position', '$end_pos', '$>', '$private', '$source_line', '$*', '$length', '$each', '$line_range', '$intersect', '$column_range', '$size', '$[]=', '$!', '$>=', '$map', '$name', '$!=', '$resize', '$=~', '$source', '$adjust']);
+  Opal.add_stubs('freeze,attr_reader,include?,raise,join,inspect,dup,compile,is?,==,line,last_line,+,message,render_line,first_line_only,last_line_only,-,source_buffer,decompose_position,end_pos,>,private,source_line,*,length,each,line_range,intersect,column_range,size,[]=,>=,!,map,name,!=,resize,=~,source,adjust');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -7131,56 +6279,44 @@ Opal.modules["parser/diagnostic"] = function(Opal) {
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Diagnostic');
 
-      var $nesting = [self].concat($parent_nesting), $Diagnostic_initialize$1, $Diagnostic_message$2, $Diagnostic_render$3, $Diagnostic_render_line$4, $Diagnostic_first_line_only$7, $Diagnostic_last_line_only$8;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.reason = self.$$prototype["arguments"] = self.$$prototype.location = self.$$prototype.level = self.$$prototype.highlights = nil;
+      $proto.reason = $proto["arguments"] = $proto.location = $proto.level = $proto.highlights = nil;
       
-      Opal.const_set($nesting[0], 'LEVELS', ["note", "warning", "error", "fatal"].$freeze());
+      $const_set($nesting[0], 'LEVELS', ["note", "warning", "error", "fatal"].$freeze());
       self.$attr_reader("level", "reason", "arguments");
       self.$attr_reader("location", "highlights");
       
-      Opal.def(self, '$initialize', $Diagnostic_initialize$1 = function $$initialize(level, reason, arguments$, location, highlights) {
+      $def(self, '$initialize', function $$initialize(level, reason, arguments$, location, highlights) {
         var self = this, $ret_or_1 = nil;
 
         
         
-        if (highlights == null) {
-          highlights = [];
+        if (highlights == null) highlights = [];;
+        if (!$truthy($$('LEVELS')['$include?'](level))) {
+          self.$raise($$('ArgumentError'), "" + ("Diagnostic#level must be one of " + ($$('LEVELS').$join(", ")) + "; ") + ("" + (level.$inspect()) + " provided."))
         };
-        if ($truthy($$($nesting, 'LEVELS')['$include?'](level))) {
-        } else {
-          self.$raise($$($nesting, 'ArgumentError'), "" + ("" + "Diagnostic#level must be one of " + ($$($nesting, 'LEVELS').$join(", ")) + "; ") + ("" + (level.$inspect()) + " provided."))
-        };
-        if ($truthy(location)) {
-        } else {
+        if (!$truthy(location)) {
           self.$raise("Expected a location")
         };
         self.level = level;
         self.reason = reason;
-        self["arguments"] = (function() {if ($truthy(($ret_or_1 = arguments$))) {
-          return $ret_or_1
-        } else {
-          return $hash2([], {})
-        }; return nil; })().$dup().$freeze();
+        self["arguments"] = ($truthy(($ret_or_1 = arguments$)) ? ($ret_or_1) : ($hash2([], {}))).$dup().$freeze();
         self.location = location;
         self.highlights = highlights.$dup().$freeze();
         return self.$freeze();
-      }, $Diagnostic_initialize$1.$$arity = -5);
+      }, -5);
       
-      Opal.def(self, '$message', $Diagnostic_message$2 = function $$message() {
+      $def(self, '$message', function $$message() {
         var self = this;
 
-        return $$($nesting, 'Messages').$compile(self.reason, self["arguments"])
-      }, $Diagnostic_message$2.$$arity = 0);
+        return $$('Messages').$compile(self.reason, self["arguments"])
+      }, 0);
       
-      Opal.def(self, '$render', $Diagnostic_render$3 = function $$render() {
-        var $a, $b, self = this, $ret_or_2 = nil, first_line = nil, last_line = nil, num_lines = nil, buffer = nil, last_lineno = nil, last_column = nil;
+      $def(self, '$render', function $$render() {
+        var $a, $b, self = this, first_line = nil, last_line = nil, num_lines = nil, buffer = nil, last_lineno = nil, last_column = nil;
 
-        if ($truthy((function() {if ($truthy(($ret_or_2 = self.location.$line()['$=='](self.location.$last_line())))) {
-          return $ret_or_2
-        } else {
-          return self.location['$is?']("\n")
-        }; return nil; })())) {
+        if (($eqeq(self.location.$line(), self.location.$last_line()) || ($truthy(self.location['$is?']("\n"))))) {
           return $rb_plus(["" + (self.location) + ": " + (self.level) + ": " + (self.$message())], self.$render_line(self.location))
         } else {
           
@@ -7188,141 +6324,127 @@ Opal.modules["parser/diagnostic"] = function(Opal) {
           last_line = self.$last_line_only(self.location);
           num_lines = $rb_plus($rb_minus(self.location.$last_line(), self.location.$line()), 1);
           buffer = self.location.$source_buffer();
-          $b = buffer.$decompose_position(self.location.$end_pos()), $a = Opal.to_ary($b), (last_lineno = ($a[0] == null ? nil : $a[0])), (last_column = ($a[1] == null ? nil : $a[1])), $b;
+          $b = buffer.$decompose_position(self.location.$end_pos()), $a = $to_ary($b), (last_lineno = ($a[0] == null ? nil : $a[0])), (last_column = ($a[1] == null ? nil : $a[1])), $b;
           return $rb_plus($rb_plus(["" + (self.location) + "-" + (last_lineno) + ":" + (last_column) + ": " + (self.level) + ": " + (self.$message())], self.$render_line(first_line, $rb_gt(num_lines, 2), false)), self.$render_line(last_line, false, true));
         }
-      }, $Diagnostic_render$3.$$arity = 0);
+      }, 0);
       self.$private();
       
-      Opal.def(self, '$render_line', $Diagnostic_render_line$4 = function $$render_line(range, ellipsis, range_end) {
-        var $$5, $$6, self = this, source_line = nil, highlight_line = nil, $ret_or_3 = nil, $writer = nil;
+      $def(self, '$render_line', function $$render_line(range, ellipsis, range_end) {
+        var self = this, source_line = nil, highlight_line = nil, $writer = nil;
 
         
         
-        if (ellipsis == null) {
-          ellipsis = false;
-        };
+        if (ellipsis == null) ellipsis = false;;
         
-        if (range_end == null) {
-          range_end = false;
-        };
+        if (range_end == null) range_end = false;;
         source_line = range.$source_line();
         highlight_line = $rb_times(" ", source_line.$length());
-        $send(self.highlights, 'each', [], ($$5 = function(highlight){var self = $$5.$$s == null ? this : $$5.$$s, line_range = nil, $writer = nil;
+        $send(self.highlights, 'each', [], function $$1(highlight){var line_range = nil, $writer = nil;
 
           
           
-          if (highlight == null) {
-            highlight = nil;
-          };
+          if (highlight == null) highlight = nil;;
           line_range = range.$source_buffer().$line_range(range.$line());
           if ($truthy((highlight = highlight.$intersect(line_range)))) {
             
             $writer = [highlight.$column_range(), $rb_times("~", highlight.$size())];
-            $send(highlight_line, '[]=', Opal.to_a($writer));
+            $send(highlight_line, '[]=', $to_a($writer));
             return $writer[$rb_minus($writer["length"], 1)];
           } else {
             return nil
-          };}, $$5.$$s = self, $$5.$$arity = 1, $$5));
+          };}, 1);
         if ($truthy(range['$is?']("\n"))) {
           highlight_line = $rb_plus(highlight_line, "^")
-        } else if ($truthy((function() {if ($truthy(($ret_or_3 = range_end['$!']()))) {
-          return $rb_ge(range.$size(), 1)
-        } else {
-          return $ret_or_3
-        }; return nil; })())) {
+        } else if (($not(range_end) && ($truthy($rb_ge(range.$size(), 1))))) {
           
           $writer = [range.$column_range(), $rb_plus("^", $rb_times("~", $rb_minus(range.$size(), 1)))];
-          $send(highlight_line, '[]=', Opal.to_a($writer));
+          $send(highlight_line, '[]=', $to_a($writer));
           $writer[$rb_minus($writer["length"], 1)];
         } else {
           
           $writer = [range.$column_range(), $rb_times("~", range.$size())];
-          $send(highlight_line, '[]=', Opal.to_a($writer));
+          $send(highlight_line, '[]=', $to_a($writer));
           $writer[$rb_minus($writer["length"], 1)];
         };
         if ($truthy(ellipsis)) {
-          highlight_line = $rb_plus(highlight_line, "...")};
-        return $send([source_line, highlight_line], 'map', [], ($$6 = function(line){var self = $$6.$$s == null ? this : $$6.$$s;
-
+          highlight_line = $rb_plus(highlight_line, "...")
+        };
+        return $send([source_line, highlight_line], 'map', [], function $$2(line){
           
           
-          if (line == null) {
-            line = nil;
-          };
-          return "" + (range.$source_buffer().$name()) + ":" + (range.$line()) + ": " + (line);}, $$6.$$s = self, $$6.$$arity = 1, $$6));
-      }, $Diagnostic_render_line$4.$$arity = -2);
+          if (line == null) line = nil;;
+          return "" + (range.$source_buffer().$name()) + ":" + (range.$line()) + ": " + (line);}, 1);
+      }, -2);
       
-      Opal.def(self, '$first_line_only', $Diagnostic_first_line_only$7 = function $$first_line_only(range) {
-        var self = this;
-
-        if ($truthy(range.$line()['$!='](range.$last_line()))) {
+      $def(self, '$first_line_only', function $$first_line_only(range) {
+        
+        if ($neqeq(range.$line(), range.$last_line())) {
           return range.$resize(range.$source()['$=~'](/\n/))
         } else {
           return range
         }
-      }, $Diagnostic_first_line_only$7.$$arity = 1);
-      return (Opal.def(self, '$last_line_only', $Diagnostic_last_line_only$8 = function $$last_line_only(range) {
-        var self = this;
-
-        if ($truthy(range.$line()['$!='](range.$last_line()))) {
+      }, 1);
+      return $def(self, '$last_line_only', function $$last_line_only(range) {
+        
+        if ($neqeq(range.$line(), range.$last_line())) {
           return range.$adjust($hash2(["begin_pos"], {"begin_pos": range.$source()['$=~'](/[^\n]*$/)}))
         } else {
           return range
         }
-      }, $Diagnostic_last_line_only$8.$$arity = 1), nil) && 'last_line_only';
+      }, 1);
     })($nesting[0], null, $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/diagnostic/engine"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy;
+Opal.modules["parser/diagnostic/engine"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $def = Opal.def, $truthy = Opal.truthy;
 
-  Opal.add_stubs(['$attr_accessor', '$ignore?', '$call', '$raise?', '$raise', '$protected', '$==', '$level']);
+  Opal.add_stubs('attr_accessor,ignore?,call,raise?,raise,protected,==,level');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
-    var $nesting = [self].concat($parent_nesting);
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Engine');
 
-      var $nesting = [self].concat($parent_nesting), $Engine_initialize$1, $Engine_process$2, $Engine_ignore$ques$3, $Engine_raise$ques$4;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.consumer = self.$$prototype.ignore_warnings = self.$$prototype.all_errors_are_fatal = nil;
+      $proto.consumer = $proto.ignore_warnings = $proto.all_errors_are_fatal = nil;
       
       self.$attr_accessor("consumer");
       self.$attr_accessor("all_errors_are_fatal");
       self.$attr_accessor("ignore_warnings");
       
-      Opal.def(self, '$initialize', $Engine_initialize$1 = function $$initialize(consumer) {
+      $def(self, '$initialize', function $$initialize(consumer) {
         var self = this;
 
         
         
-        if (consumer == null) {
-          consumer = nil;
-        };
+        if (consumer == null) consumer = nil;;
         self.consumer = consumer;
         self.all_errors_are_fatal = false;
         return (self.ignore_warnings = false);
-      }, $Engine_initialize$1.$$arity = -1);
+      }, -1);
       
-      Opal.def(self, '$process', $Engine_process$2 = function $$process(diagnostic) {
+      $def(self, '$process', function $$process(diagnostic) {
         var self = this;
 
         
-        if ($truthy(self['$ignore?'](diagnostic))) {
-        } else if ($truthy(self.consumer)) {
-          self.consumer.$call(diagnostic)};
+        if (!$truthy(self['$ignore?'](diagnostic))) {
+          if ($truthy(self.consumer)) {
+            self.consumer.$call(diagnostic)
+          }
+        };
         if ($truthy(self['$raise?'](diagnostic))) {
-          self.$raise($$$($$($nesting, 'Parser'), 'SyntaxError'), diagnostic)};
+          self.$raise($$$($$('Parser'), 'SyntaxError'), diagnostic)
+        };
         return self;
-      }, $Engine_process$2.$$arity = 1);
+      }, 1);
       self.$protected();
       
-      Opal.def(self, '$ignore?', $Engine_ignore$ques$3 = function(diagnostic) {
+      $def(self, '$ignore?', function $Engine_ignore$ques$1(diagnostic) {
         var self = this, $ret_or_1 = nil;
 
         if ($truthy(($ret_or_1 = self.ignore_warnings))) {
@@ -7330,29 +6452,24 @@ Opal.modules["parser/diagnostic/engine"] = function(Opal) {
         } else {
           return $ret_or_1
         }
-      }, $Engine_ignore$ques$3.$$arity = 1);
-      return (Opal.def(self, '$raise?', $Engine_raise$ques$4 = function(diagnostic) {
-        var self = this, $ret_or_2 = nil, $ret_or_3 = nil;
+      }, 1);
+      return $def(self, '$raise?', function $Engine_raise$ques$2(diagnostic) {
+        var self = this, $ret_or_1 = nil, $ret_or_2 = nil;
 
-        if ($truthy(($ret_or_2 = (function() {if ($truthy(($ret_or_3 = self.all_errors_are_fatal))) {
-          return diagnostic.$level()['$==']("error")
-        } else {
-          return $ret_or_3
-        }; return nil; })()))) {
-          return $ret_or_2
+        if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = self.all_errors_are_fatal)) ? (diagnostic.$level()['$==']("error")) : ($ret_or_2))))) {
+          return $ret_or_1
         } else {
           return diagnostic.$level()['$==']("fatal")
         }
-      }, $Engine_raise$ques$4.$$arity = 1), nil) && 'raise?';
-    })($$($nesting, 'Diagnostic'), null, $nesting)
+      }, 1);
+    })($$('Diagnostic'), null, $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/static_environment"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass;
+Opal.modules["parser/static_environment"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $const_set = Opal.const_set, $def = Opal.def;
 
-  Opal.add_stubs(['$reset', '$[]', '$push', '$dup', '$pop', '$add', '$to_sym', '$include?', '$declare', '$declared?', '$empty?']);
+  Opal.add_stubs('reset,[],push,dup,pop,add,to_sym,include?,declare,declared?,empty?');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -7361,464 +6478,410 @@ Opal.modules["parser/static_environment"] = function(Opal) {
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'StaticEnvironment');
 
-      var $nesting = [self].concat($parent_nesting), $StaticEnvironment_initialize$1, $StaticEnvironment_reset$2, $StaticEnvironment_extend_static$3, $StaticEnvironment_extend_dynamic$4, $StaticEnvironment_unextend$5, $StaticEnvironment_declare$6, $StaticEnvironment_declared$ques$7, $StaticEnvironment_declare_forward_args$8, $StaticEnvironment_declared_forward_args$ques$9, $StaticEnvironment_declare_anonymous_blockarg$10, $StaticEnvironment_declared_anonymous_blockarg$ques$11, $StaticEnvironment_empty$ques$12;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.stack = self.$$prototype.variables = nil;
+      $proto.stack = $proto.variables = nil;
       
-      Opal.const_set($nesting[0], 'FORWARD_ARGS', "FORWARD_ARGS");
-      Opal.const_set($nesting[0], 'ANONYMOUS_BLOCKARG', "ANONYMOUS_BLOCKARG");
+      $const_set($nesting[0], 'FORWARD_ARGS', "FORWARD_ARGS");
+      $const_set($nesting[0], 'ANONYMOUS_BLOCKARG', "ANONYMOUS_BLOCKARG");
       
-      Opal.def(self, '$initialize', $StaticEnvironment_initialize$1 = function $$initialize() {
+      $def(self, '$initialize', function $$initialize() {
         var self = this;
 
         return self.$reset()
-      }, $StaticEnvironment_initialize$1.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$reset', $StaticEnvironment_reset$2 = function $$reset() {
+      $def(self, '$reset', function $$reset() {
         var self = this;
 
         
-        self.variables = $$($nesting, 'Set')['$[]']();
+        self.variables = $$('Set')['$[]']();
         return (self.stack = []);
-      }, $StaticEnvironment_reset$2.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$extend_static', $StaticEnvironment_extend_static$3 = function $$extend_static() {
+      $def(self, '$extend_static', function $$extend_static() {
         var self = this;
 
         
         self.stack.$push(self.variables);
-        self.variables = $$($nesting, 'Set')['$[]']();
+        self.variables = $$('Set')['$[]']();
         return self;
-      }, $StaticEnvironment_extend_static$3.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$extend_dynamic', $StaticEnvironment_extend_dynamic$4 = function $$extend_dynamic() {
+      $def(self, '$extend_dynamic', function $$extend_dynamic() {
         var self = this;
 
         
         self.stack.$push(self.variables);
         self.variables = self.variables.$dup();
         return self;
-      }, $StaticEnvironment_extend_dynamic$4.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$unextend', $StaticEnvironment_unextend$5 = function $$unextend() {
+      $def(self, '$unextend', function $$unextend() {
         var self = this;
 
         
         self.variables = self.stack.$pop();
         return self;
-      }, $StaticEnvironment_unextend$5.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$declare', $StaticEnvironment_declare$6 = function $$declare(name) {
+      $def(self, '$declare', function $$declare(name) {
         var self = this;
 
         
         self.variables.$add(name.$to_sym());
         return self;
-      }, $StaticEnvironment_declare$6.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$declared?', $StaticEnvironment_declared$ques$7 = function(name) {
+      $def(self, '$declared?', function $StaticEnvironment_declared$ques$1(name) {
         var self = this;
 
         return self.variables['$include?'](name.$to_sym())
-      }, $StaticEnvironment_declared$ques$7.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$declare_forward_args', $StaticEnvironment_declare_forward_args$8 = function $$declare_forward_args() {
+      $def(self, '$declare_forward_args', function $$declare_forward_args() {
         var self = this;
 
-        return self.$declare($$($nesting, 'FORWARD_ARGS'))
-      }, $StaticEnvironment_declare_forward_args$8.$$arity = 0);
+        return self.$declare($$('FORWARD_ARGS'))
+      }, 0);
       
-      Opal.def(self, '$declared_forward_args?', $StaticEnvironment_declared_forward_args$ques$9 = function() {
+      $def(self, '$declared_forward_args?', function $StaticEnvironment_declared_forward_args$ques$2() {
         var self = this;
 
-        return self['$declared?']($$($nesting, 'FORWARD_ARGS'))
-      }, $StaticEnvironment_declared_forward_args$ques$9.$$arity = 0);
+        return self['$declared?']($$('FORWARD_ARGS'))
+      }, 0);
       
-      Opal.def(self, '$declare_anonymous_blockarg', $StaticEnvironment_declare_anonymous_blockarg$10 = function $$declare_anonymous_blockarg() {
+      $def(self, '$declare_anonymous_blockarg', function $$declare_anonymous_blockarg() {
         var self = this;
 
-        return self.$declare($$($nesting, 'ANONYMOUS_BLOCKARG'))
-      }, $StaticEnvironment_declare_anonymous_blockarg$10.$$arity = 0);
+        return self.$declare($$('ANONYMOUS_BLOCKARG'))
+      }, 0);
       
-      Opal.def(self, '$declared_anonymous_blockarg?', $StaticEnvironment_declared_anonymous_blockarg$ques$11 = function() {
+      $def(self, '$declared_anonymous_blockarg?', function $StaticEnvironment_declared_anonymous_blockarg$ques$3() {
         var self = this;
 
-        return self['$declared?']($$($nesting, 'ANONYMOUS_BLOCKARG'))
-      }, $StaticEnvironment_declared_anonymous_blockarg$ques$11.$$arity = 0);
-      return (Opal.def(self, '$empty?', $StaticEnvironment_empty$ques$12 = function() {
+        return self['$declared?']($$('ANONYMOUS_BLOCKARG'))
+      }, 0);
+      return $def(self, '$empty?', function $StaticEnvironment_empty$ques$4() {
         var self = this;
 
         return self.stack['$empty?']()
-      }, $StaticEnvironment_empty$ques$12.$$arity = 0), nil) && 'empty?';
+      }, 0);
     })($nesting[0], null, $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/lexer"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_le(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs <= rhs : lhs['$<='](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_ge(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs >= rhs : lhs['$>='](rhs);
-  }
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $send = Opal.send, $hash = Opal.hash, $truthy = Opal.truthy, $hash2 = Opal.hash2, $range = Opal.range, $gvars = Opal.gvars;
+Opal.modules["parser/lexer"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $const_set = Opal.const_set, $hash = Opal.hash, $def = Opal.def, $truthy = Opal.truthy, $eqeq = Opal.eqeq, $hash2 = Opal.hash2, $rb_plus = Opal.rb_plus, $to_ary = Opal.to_ary, $rb_le = Opal.rb_le, $eqeqeq = Opal.eqeqeq, $rb_gt = Opal.rb_gt, $neqeq = Opal.neqeq, $not = Opal.not, $rb_ge = Opal.rb_ge, $range = Opal.range, $rb_lt = Opal.rb_lt, $gvars = Opal.gvars;
 
-  Opal.add_stubs(['$attr_accessor', '$private', '$_lex_trans_keys=', '$-', '$_lex_key_spans=', '$_lex_index_offsets=', '$_lex_indicies=', '$_lex_trans_targs=', '$_lex_trans_actions=', '$_lex_to_state_actions=', '$_lex_from_state_actions=', '$_lex_eof_trans=', '$lex_start=', '$lex_error=', '$lex_en_interp_words=', '$lex_en_interp_string=', '$lex_en_plain_words=', '$lex_en_plain_string=', '$lex_en_interp_backslash_delimited=', '$lex_en_plain_backslash_delimited=', '$lex_en_interp_backslash_delimited_words=', '$lex_en_plain_backslash_delimited_words=', '$lex_en_regexp_modifiers=', '$lex_en_expr_variable=', '$lex_en_expr_fname=', '$lex_en_expr_endfn=', '$lex_en_expr_dot=', '$lex_en_expr_arg=', '$lex_en_expr_cmdarg=', '$lex_en_expr_endarg=', '$lex_en_expr_mid=', '$lex_en_expr_beg=', '$lex_en_expr_labelarg=', '$lex_en_expr_value=', '$lex_en_expr_end=', '$lex_en_leading_dot=', '$lex_en_line_comment=', '$lex_en_line_begin=', '$freeze', '$ord', '$union', '$chars', '$attr_reader', '$reset', '$lex_en_line_begin', '$class', '$new', '$source', '$==', '$encoding', '$unpack', '$[]', '$lex_en_expr_dot', '$lex_en_expr_fname', '$lex_en_expr_value', '$lex_en_expr_beg', '$lex_en_expr_mid', '$lex_en_expr_arg', '$lex_en_expr_cmdarg', '$lex_en_expr_end', '$lex_en_expr_endarg', '$lex_en_expr_endfn', '$lex_en_expr_labelarg', '$lex_en_interp_string', '$lex_en_interp_words', '$lex_en_plain_string', '$fetch', '$invert', '$push', '$count', '$pop', '$any?', '$shift', '$send', '$+', '$size', '$<=', '$===', '$<<', '$>', '$!=', '$emit_comment', '$tok', '$literal', '$flush_string', '$extend_content', '$emit', '$heredoc?', '$saved_herebody_s=', '$start_interp_brace', '$[]=', '$diagnostic', '$range', '$str_s', '$gsub', '$version?', '$nest_and_try_closing', '$heredoc_e', '$pop_literal', '$infer_indent_level', '$words?', '$!', '$eof_codepoint?', '$extend_space', '$extend_string', '$>=', '$active?', '$slice', '$start_with?', '$chr', '$munge_escape?', '$regexp?', '$match', '$squiggly_heredoc?', '$supports_line_continuation_via_slash?', '$include?', '$scan', '$join', '$=~', '$to_i', '$stack_pop', '$emit_table', '$push_literal', '$in_argdef', '$arg_or_cmdarg', '$<', '$emit_do', '$nil?', '$declared?', '$last', '$getbyte', '$inspect', '$end_with?', '$empty?', '$index', '$call', '$Float', '$to_f', '$length', '$lambda', '$Rational', '$Complex', '$each', '$encode_escape', '$%', '$in_kwarg', '$end_interp_brace_and_try_closing', '$lexpop', '$saved_herebody_s', '$next_state_for_literal', '$rstrip', '$&', '$|', '$lex_error', '$protected', '$force_encoding', '$process', '$backslash_delimited?', '$interpolate?', '$lex_en_interp_backslash_delimited_words', '$lex_en_plain_backslash_delimited_words', '$lex_en_plain_words', '$lex_en_interp_backslash_delimited', '$lex_en_plain_backslash_delimited', '$dedent_level', '$type', '$lex_en_regexp_modifiers', '$upcase']);
+  Opal.add_stubs('attr_accessor,private,_lex_trans_keys=,-,_lex_key_spans=,_lex_index_offsets=,_lex_indicies=,_lex_trans_targs=,_lex_trans_actions=,_lex_to_state_actions=,_lex_from_state_actions=,_lex_eof_trans=,lex_start=,lex_error=,lex_en_interp_words=,lex_en_interp_string=,lex_en_plain_words=,lex_en_plain_string=,lex_en_interp_backslash_delimited=,lex_en_plain_backslash_delimited=,lex_en_interp_backslash_delimited_words=,lex_en_plain_backslash_delimited_words=,lex_en_regexp_modifiers=,lex_en_expr_variable=,lex_en_expr_fname=,lex_en_expr_endfn=,lex_en_expr_dot=,lex_en_expr_arg=,lex_en_expr_cmdarg=,lex_en_expr_endarg=,lex_en_expr_mid=,lex_en_expr_beg=,lex_en_expr_labelarg=,lex_en_expr_value=,lex_en_expr_end=,lex_en_leading_dot=,lex_en_line_comment=,lex_en_line_begin=,freeze,ord,union,chars,attr_reader,reset,lex_en_line_begin,class,new,source,==,encoding,unpack,[],lex_en_expr_dot,lex_en_expr_fname,lex_en_expr_value,lex_en_expr_beg,lex_en_expr_mid,lex_en_expr_arg,lex_en_expr_cmdarg,lex_en_expr_end,lex_en_expr_endarg,lex_en_expr_endfn,lex_en_expr_labelarg,lex_en_interp_string,lex_en_interp_words,lex_en_plain_string,fetch,invert,push,count,pop,any?,shift,send,+,size,<=,===,<<,>,!=,emit_comment,tok,literal,flush_string,extend_content,emit,heredoc?,saved_herebody_s=,start_interp_brace,[]=,diagnostic,range,str_s,gsub,version?,nest_and_try_closing,heredoc_e,pop_literal,infer_indent_level,!,eof_codepoint?,words?,extend_space,extend_string,active?,>=,slice,start_with?,chr,munge_escape?,match,regexp?,squiggly_heredoc?,supports_line_continuation_via_slash?,include?,scan,join,=~,to_i,stack_pop,emit_table,push_literal,in_argdef,arg_or_cmdarg,<,emit_do,declared?,nil?,last,getbyte,inspect,end_with?,empty?,index,call,Float,to_f,length,lambda,Rational,Complex,each,encode_escape,%,in_kwarg,end_interp_brace_and_try_closing,lexpop,saved_herebody_s,next_state_for_literal,rstrip,&,|,lex_error,protected,force_encoding,process,backslash_delimited?,interpolate?,lex_en_interp_backslash_delimited_words,lex_en_plain_backslash_delimited_words,lex_en_plain_words,lex_en_interp_backslash_delimited,lex_en_plain_backslash_delimited,dedent_level,type,lex_en_regexp_modifiers,upcase');
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Lexer');
 
-    var $nesting = [self].concat($parent_nesting), $Lexer_initialize$1, $Lexer_reset$2, $Lexer_source_buffer$eq$3, $Lexer_encoding$4, $Lexer_state$5, $Lexer_state$eq$6, $Lexer_push_cmdarg$7, $Lexer_pop_cmdarg$8, $Lexer_push_cond$9, $Lexer_pop_cond$10, $Lexer_dedent_level$11, $Lexer_advance$12, $Lexer_eof_codepoint$ques$42, $Lexer_version$ques$43, $Lexer_stack_pop$44, $Lexer_encode_escape$45, $Lexer_tok$46, $Lexer_range$47, $Lexer_emit$48, $Lexer_emit_table$49, $Lexer_emit_do$50, $Lexer_arg_or_cmdarg$51, $Lexer_emit_comment$52, $Lexer_diagnostic$53, $Lexer_push_literal$54, $Lexer_next_state_for_literal$55, $Lexer_literal$56, $Lexer_pop_literal$57, $Lexer$58, $writer = nil;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $writer = nil, $proto = self.$$prototype;
 
-    self.$$prototype.source_buffer = self.$$prototype.source_pts = self.$$prototype.cs = self.$$prototype.cmdarg_stack = self.$$prototype.cmdarg = self.$$prototype.cond_stack = self.$$prototype.cond = self.$$prototype.dedent_level = self.$$prototype.token_queue = self.$$prototype.p = self.$$prototype.command_start = self.$$prototype.herebody_s = self.$$prototype.sharp_s = self.$$prototype.ts = self.$$prototype.te = self.$$prototype.top = self.$$prototype.stack = self.$$prototype.version = self.$$prototype.escape_s = self.$$prototype.escape = self.$$prototype.act = self.$$prototype.context = self.$$prototype.static_env = self.$$prototype.newline_s = self.$$prototype.lambda_stack = self.$$prototype.paren_nest = self.$$prototype.num_digits_s = self.$$prototype.num_suffix_s = self.$$prototype.num_base = self.$$prototype.num_xfrm = self.$$prototype.eq_begin_s = self.$$prototype.cs_before_block_comment = self.$$prototype.tokens = self.$$prototype.comments = self.$$prototype.diagnostics = self.$$prototype.literal_stack = nil;
+    $proto.source_buffer = $proto.source_pts = $proto.cs = $proto.cmdarg_stack = $proto.cmdarg = $proto.cond_stack = $proto.cond = $proto.dedent_level = $proto.token_queue = $proto.p = $proto.command_start = $proto.herebody_s = $proto.sharp_s = $proto.ts = $proto.te = $proto.top = $proto.stack = $proto.version = $proto.escape_s = $proto.escape = $proto.act = $proto.context = $proto.static_env = $proto.newline_s = $proto.lambda_stack = $proto.paren_nest = $proto.num_digits_s = $proto.num_suffix_s = $proto.num_base = $proto.num_xfrm = $proto.eq_begin_s = $proto.cs_before_block_comment = $proto.tokens = $proto.comments = $proto.diagnostics = $proto.literal_stack = nil;
     
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       
       self.$attr_accessor("_lex_trans_keys");
       return self.$private("_lex_trans_keys", "_lex_trans_keys=");
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [[0, 0, 101, 101, 103, 103, 105, 105, 110, 110, 69, 69, 78, 78, 68, 68, 95, 95, 95, 95, 0, 26, 0, 127, 0, 127, 0, 127, 0, 127, 0, 45, 0, 120, 0, 120, 0, 92, 0, 120, 0, 120, 0, 45, 0, 120, 0, 120, 67, 99, 45, 45, 0, 92, 0, 120, 0, 102, 0, 127, 0, 127, 0, 127, 0, 127, 0, 45, 0, 120, 0, 120, 0, 92, 0, 120, 0, 120, 0, 45, 0, 120, 0, 120, 67, 99, 45, 45, 0, 92, 0, 120, 0, 102, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 58, 58, 58, 58, 46, 46, 0, 127, 58, 58, 60, 60, 62, 62, 10, 10, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 115, 115, 99, 99, 117, 117, 101, 101, 108, 116, 101, 101, 115, 115, 115, 115, 105, 105, 108, 108, 105, 105, 108, 108, 58, 58, 0, 127, 10, 10, 0, 127, 9, 92, 10, 10, 9, 92, 58, 58, 98, 98, 101, 101, 103, 103, 105, 105, 110, 110, 0, 127, 61, 61, 9, 92, 9, 92, 9, 92, 9, 92, 9, 92, 10, 10, 0, 127, 0, 127, 61, 126, 93, 93, 0, 127, 0, 127, 10, 10, 34, 34, 10, 10, 39, 39, 0, 127, 10, 96, 96, 96, 0, 45, 0, 120, 0, 120, 0, 92, 0, 120, 0, 120, 0, 45, 0, 120, 0, 120, 67, 99, 45, 45, 0, 92, 0, 120, 0, 102, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 58, 58, 58, 58, 0, 127, 43, 57, 48, 57, 48, 57, 48, 57, 48, 57, 115, 115, 99, 99, 117, 117, 101, 101, 99, 99, 117, 117, 101, 101, 0, 127, 58, 58, 9, 92, 9, 92, 9, 92, 9, 92, 9, 92, 9, 92, 60, 60, 10, 10, 9, 92, 9, 92, 10, 10, 10, 10, 10, 10, 10, 10, 46, 46, 0, 95, 9, 32, 0, 0, 10, 10, 10, 10, 98, 98, 9, 32, 10, 10, 95, 95, 0, 92, 9, 32, 36, 123, 0, 127, 48, 57, 0, 127, 0, 120, 0, 0, 0, 0, 48, 55, 48, 55, 0, 0, 0, 0, 0, 92, 0, 0, 0, 0, 0, 0, 0, 92, 45, 45, 0, 0, 0, 0, 0, 0, 0, 92, 48, 102, 48, 102, 0, 0, 48, 102, 48, 102, 0, 0, 0, 45, 0, 92, 0, 92, 0, 0, 0, 0, 0, 92, 48, 102, 48, 102, 0, 0, 0, 45, 10, 10, 0, 92, 48, 123, 48, 102, 48, 102, 48, 102, 0, 0, 0, 125, 0, 125, 0, 0, 0, 125, 0, 0, 0, 125, 0, 125, 0, 125, 0, 125, 0, 0, 0, 125, 0, 125, 0, 125, 0, 125, 0, 125, 0, 125, 0, 0, 0, 0, 48, 102, 0, 0, 0, 92, 36, 123, 0, 127, 48, 57, 0, 127, 0, 120, 0, 0, 0, 0, 48, 55, 48, 55, 0, 0, 0, 0, 0, 92, 0, 0, 0, 0, 0, 0, 0, 92, 45, 45, 0, 0, 0, 0, 0, 0, 0, 92, 48, 102, 48, 102, 0, 0, 48, 102, 48, 102, 0, 0, 0, 45, 0, 92, 0, 92, 0, 0, 0, 0, 0, 92, 48, 102, 48, 102, 0, 0, 0, 45, 10, 10, 0, 92, 48, 123, 48, 102, 48, 102, 48, 102, 0, 0, 0, 125, 0, 125, 0, 0, 0, 125, 0, 0, 0, 125, 0, 125, 0, 125, 0, 125, 0, 0, 0, 125, 0, 125, 0, 125, 0, 125, 0, 125, 0, 125, 0, 0, 0, 0, 48, 102, 0, 0, 0, 92, 9, 32, 0, 26, 0, 92, 0, 26, 0, 35, 36, 123, 0, 127, 48, 57, 0, 127, 0, 26, 0, 35, 9, 32, 36, 123, 0, 127, 48, 57, 0, 127, 0, 32, 9, 32, 65, 122, 65, 122, 36, 64, 0, 127, 48, 57, 0, 127, 0, 127, 0, 127, 0, 127, 9, 32, 0, 0, 61, 126, 10, 10, 10, 10, 0, 127, 0, 127, 48, 57, 115, 115, 38, 38, 42, 42, 64, 64, 58, 58, 60, 61, 62, 62, 61, 126, 61, 61, 61, 62, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 93, 93, 10, 10, 0, 127, 0, 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9, 124, 0, 0, 10, 10, 10, 10, 0, 0, 9, 61, 58, 58, 60, 60, 62, 62, 9, 32, 10, 10, 0, 127, 102, 102, 101, 101, 110, 110, 104, 104, 0, 127, 0, 127, 0, 127, 0, 0, 0, 127, 10, 10, 0, 123, 9, 32, 10, 10, 10, 10, 10, 10, 0, 0, 111, 111, 0, 0, 0, 127, 0, 127, 9, 32, 0, 0, 10, 10, 10, 10, 10, 10, 0, 0, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 0, 127, 58, 61, 0, 0, 61, 126, 61, 61, 0, 0, 0, 0, 0, 0, 9, 32, 61, 61, 9, 32, 61, 126, 10, 10, 10, 10, 0, 127, 38, 61, 0, 0, 42, 61, 61, 61, 9, 92, 9, 92, 9, 92, 46, 46, 46, 46, 10, 10, 0, 26, 0, 127, 0, 127, 61, 61, 0, 0, 61, 126, 61, 62, 0, 0, 0, 0, 0, 0, 0, 0, 61, 126, 0, 127, 48, 57, 38, 38, 42, 42, 64, 64, 60, 61, 62, 62, 61, 61, 61, 62, 0, 127, 48, 57, 0, 127, 124, 124, 64, 64, 60, 61, 0, 0, 10, 34, 10, 39, 96, 96, 62, 62, 61, 126, 61, 62, 0, 122, 0, 0, 0, 127, 0, 127, 0, 120, 0, 0, 0, 0, 48, 55, 48, 55, 0, 0, 0, 0, 0, 92, 0, 0, 0, 0, 0, 0, 0, 92, 45, 45, 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-    $send(self, '_lex_trans_keys=', Opal.to_a($writer));
+    $send(self, '_lex_trans_keys=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       
       self.$attr_accessor("_lex_key_spans");
       return self.$private("_lex_key_spans", "_lex_key_spans=");
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [[0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 27, 128, 128, 128, 128, 46, 121, 121, 93, 121, 121, 46, 121, 121, 33, 1, 93, 121, 103, 128, 128, 128, 128, 46, 121, 121, 93, 121, 121, 46, 121, 121, 33, 1, 93, 121, 103, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 1, 1, 1, 128, 1, 1, 1, 1, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 1, 1, 1, 1, 9, 1, 1, 1, 1, 1, 1, 1, 1, 128, 1, 128, 84, 1, 84, 1, 1, 1, 1, 1, 1, 128, 1, 84, 84, 84, 84, 84, 1, 128, 128, 66, 1, 128, 128, 1, 1, 1, 1, 128, 87, 1, 46, 121, 121, 93, 121, 121, 46, 121, 121, 33, 1, 93, 121, 103, 128, 128, 128, 128, 128, 128, 1, 1, 128, 15, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 128, 1, 84, 84, 84, 84, 84, 84, 1, 1, 84, 84, 1, 1, 1, 1, 1, 96, 24, 0, 1, 1, 1, 24, 1, 1, 93, 24, 88, 128, 10, 128, 121, 0, 0, 8, 8, 0, 0, 93, 0, 0, 0, 93, 1, 0, 0, 0, 93, 55, 55, 0, 55, 55, 0, 46, 93, 93, 0, 0, 93, 55, 55, 0, 46, 1, 93, 76, 55, 55, 55, 0, 126, 126, 0, 126, 0, 126, 126, 126, 126, 0, 126, 126, 126, 126, 126, 126, 0, 0, 55, 0, 93, 88, 128, 10, 128, 121, 0, 0, 8, 8, 0, 0, 93, 0, 0, 0, 93, 1, 0, 0, 0, 93, 55, 55, 0, 55, 55, 0, 46, 93, 93, 0, 0, 93, 55, 55, 0, 46, 1, 93, 76, 55, 55, 55, 0, 126, 126, 0, 126, 0, 126, 126, 126, 126, 0, 126, 126, 126, 126, 126, 126, 0, 0, 55, 0, 93, 24, 27, 93, 27, 36, 88, 128, 10, 128, 27, 36, 24, 88, 128, 10, 128, 33, 24, 58, 58, 29, 128, 10, 128, 128, 128, 128, 24, 0, 66, 1, 1, 128, 128, 10, 1, 1, 1, 1, 1, 2, 1, 66, 1, 2, 128, 128, 128, 128, 128, 128, 128, 1, 1, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 1, 128, 128, 24, 1, 1, 1, 1, 0, 128, 128, 1, 0, 24, 0, 66, 1, 1, 1, 1, 1, 2, 1, 66, 1, 2, 128, 1, 1, 1, 127, 128, 62, 53, 53, 0, 53, 54, 1, 1, 1, 24, 0, 128, 0, 116, 0, 1, 1, 0, 53, 1, 1, 1, 24, 1, 128, 1, 1, 1, 1, 128, 128, 128, 0, 128, 1, 124, 24, 1, 1, 1, 0, 1, 0, 128, 128, 24, 0, 1, 1, 1, 0, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 4, 0, 66, 1, 0, 0, 0, 24, 1, 24, 66, 1, 1, 128, 24, 0, 20, 1, 84, 84, 84, 1, 1, 1, 27, 128, 128, 1, 0, 66, 2, 0, 0, 0, 0, 66, 128, 10, 1, 1, 1, 2, 1, 1, 2, 128, 10, 128, 1, 1, 2, 0, 25, 30, 1, 1, 66, 2, 123, 0, 128, 128, 121, 0, 0, 8, 8, 0, 0, 93, 0, 0, 0, 93, 1, 0, 0, 0, 93, 55, 55, 0, 55, 55, 0, 46, 93, 93, 0, 0, 93, 55, 55, 0, 46, 1, 93, 76, 55, 55, 55, 0, 126, 126, 0, 126, 0, 126, 126, 126, 126, 0, 126, 126, 126, 126, 126, 126, 126, 126, 126, 126, 126, 126, 126, 126, 126, 126, 126, 126, 126, 0, 0, 55, 0, 128, 128, 128, 0, 1, 0, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 66, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 0, 64, 93, 24, 0, 1, 1, 1, 0, 128, 128, 24, 0, 1, 1, 1, 0, 128, 128, 1, 0, 24, 0, 66, 1, 1, 128, 128, 10, 1, 24, 0, 0, 20, 2, 12, 1, 1, 54, 48, 75, 67, 15, 58, 1, 0, 5, 0, 0, 67, 67, 67, 67, 10, 1, 0, 5, 1, 0, 0, 67, 67, 67, 67, 67, 67, 67, 67, 69, 67, 69, 67, 1, 2, 1, 66, 1, 2, 128, 128, 0, 128, 128, 128, 128, 128, 128, 0, 1, 0, 0, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 84, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 0, 64, 0, 84, 84, 84, 1, 1, 1, 1, 1, 52, 1, 92, 101, 91, 1]];
-    $send(self, '_lex_key_spans=', Opal.to_a($writer));
+    $send(self, '_lex_key_spans=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       
       self.$attr_accessor("_lex_index_offsets");
       return self.$private("_lex_index_offsets", "_lex_index_offsets=");
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [[0, 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 46, 175, 304, 433, 562, 609, 731, 853, 947, 1069, 1191, 1238, 1360, 1482, 1516, 1518, 1612, 1734, 1838, 1967, 2096, 2225, 2354, 2401, 2523, 2645, 2739, 2861, 2983, 3030, 3152, 3274, 3308, 3310, 3404, 3526, 3630, 3759, 3888, 4017, 4146, 4275, 4404, 4533, 4662, 4791, 4920, 5049, 5178, 5307, 5436, 5565, 5567, 5569, 5571, 5700, 5702, 5704, 5706, 5708, 5837, 5966, 6095, 6224, 6353, 6482, 6611, 6740, 6869, 6998, 7127, 7256, 7385, 7514, 7643, 7772, 7901, 8030, 8032, 8034, 8036, 8038, 8048, 8050, 8052, 8054, 8056, 8058, 8060, 8062, 8064, 8193, 8195, 8324, 8409, 8411, 8496, 8498, 8500, 8502, 8504, 8506, 8508, 8637, 8639, 8724, 8809, 8894, 8979, 9064, 9066, 9195, 9324, 9391, 9393, 9522, 9651, 9653, 9655, 9657, 9659, 9788, 9876, 9878, 9925, 10047, 10169, 10263, 10385, 10507, 10554, 10676, 10798, 10832, 10834, 10928, 11050, 11154, 11283, 11412, 11541, 11670, 11799, 11928, 11930, 11932, 12061, 12077, 12088, 12099, 12110, 12121, 12123, 12125, 12127, 12129, 12131, 12133, 12135, 12264, 12266, 12351, 12436, 12521, 12606, 12691, 12776, 12778, 12780, 12865, 12950, 12952, 12954, 12956, 12958, 12960, 13057, 13082, 13083, 13085, 13087, 13089, 13114, 13116, 13118, 13212, 13237, 13326, 13455, 13466, 13595, 13717, 13718, 13719, 13728, 13737, 13738, 13739, 13833, 13834, 13835, 13836, 13930, 13932, 13933, 13934, 13935, 14029, 14085, 14141, 14142, 14198, 14254, 14255, 14302, 14396, 14490, 14491, 14492, 14586, 14642, 14698, 14699, 14746, 14748, 14842, 14919, 14975, 15031, 15087, 15088, 15215, 15342, 15343, 15470, 15471, 15598, 15725, 15852, 15979, 15980, 16107, 16234, 16361, 16488, 16615, 16742, 16743, 16744, 16800, 16801, 16895, 16984, 17113, 17124, 17253, 17375, 17376, 17377, 17386, 17395, 17396, 17397, 17491, 17492, 17493, 17494, 17588, 17590, 17591, 17592, 17593, 17687, 17743, 17799, 17800, 17856, 17912, 17913, 17960, 18054, 18148, 18149, 18150, 18244, 18300, 18356, 18357, 18404, 18406, 18500, 18577, 18633, 18689, 18745, 18746, 18873, 19000, 19001, 19128, 19129, 19256, 19383, 19510, 19637, 19638, 19765, 19892, 20019, 20146, 20273, 20400, 20401, 20402, 20458, 20459, 20553, 20578, 20606, 20700, 20728, 20765, 20854, 20983, 20994, 21123, 21151, 21188, 21213, 21302, 21431, 21442, 21571, 21605, 21630, 21689, 21748, 21778, 21907, 21918, 22047, 22176, 22305, 22434, 22459, 22460, 22527, 22529, 22531, 22660, 22789, 22800, 22802, 22804, 22806, 22808, 22810, 22813, 22815, 22882, 22884, 22887, 23016, 23145, 23274, 23403, 23532, 23661, 23790, 23792, 23794, 23923, 24052, 24181, 24310, 24439, 24568, 24697, 24826, 24955, 25084, 25213, 25342, 25471, 25600, 25729, 25858, 25987, 26116, 26245, 26374, 26503, 26632, 26761, 26890, 27019, 27148, 27277, 27406, 27535, 27664, 27793, 27922, 28051, 28180, 28309, 28438, 28567, 28696, 28825, 28954, 29083, 29212, 29341, 29470, 29599, 29728, 29857, 29986, 30115, 30244, 30373, 30502, 30631, 30760, 30889, 31018, 31147, 31276, 31405, 31534, 31663, 31792, 31921, 32050, 32179, 32308, 32437, 32566, 32695, 32824, 32953, 33082, 33211, 33340, 33469, 33598, 33727, 33856, 33985, 34114, 34243, 34372, 34501, 34503, 34632, 34761, 34786, 34788, 34790, 34792, 34794, 34795, 34924, 35053, 35055, 35056, 35081, 35082, 35149, 35151, 35153, 35155, 35157, 35159, 35162, 35164, 35231, 35233, 35236, 35365, 35367, 35369, 35371, 35499, 35628, 35691, 35745, 35799, 35800, 35854, 35909, 35911, 35913, 35915, 35940, 35941, 36070, 36071, 36188, 36189, 36191, 36193, 36194, 36248, 36250, 36252, 36254, 36279, 36281, 36410, 36412, 36414, 36416, 36418, 36547, 36676, 36805, 36806, 36935, 36937, 37062, 37087, 37089, 37091, 37093, 37094, 37096, 37097, 37226, 37355, 37380, 37381, 37383, 37385, 37387, 37388, 37517, 37646, 37775, 37904, 38033, 38162, 38291, 38420, 38549, 38678, 38807, 38936, 39065, 39194, 39323, 39452, 39581, 39710, 39715, 39716, 39783, 39785, 39786, 39787, 39788, 39813, 39815, 39840, 39907, 39909, 39911, 40040, 40065, 40066, 40087, 40089, 40174, 40259, 40344, 40346, 40348, 40350, 40378, 40507, 40636, 40638, 40639, 40706, 40709, 40710, 40711, 40712, 40713, 40780, 40909, 40920, 40922, 40924, 40926, 40929, 40931, 40933, 40936, 41065, 41076, 41205, 41207, 41209, 41212, 41213, 41239, 41270, 41272, 41274, 41341, 41344, 41468, 41469, 41598, 41727, 41849, 41850, 41851, 41860, 41869, 41870, 41871, 41965, 41966, 41967, 41968, 42062, 42064, 42065, 42066, 42067, 42161, 42217, 42273, 42274, 42330, 42386, 42387, 42434, 42528, 42622, 42623, 42624, 42718, 42774, 42830, 42831, 42878, 42880, 42974, 43051, 43107, 43163, 43219, 43220, 43347, 43474, 43475, 43602, 43603, 43730, 43857, 43984, 44111, 44112, 44239, 44366, 44493, 44620, 44747, 44874, 45001, 45128, 45255, 45382, 45509, 45636, 45763, 45890, 46017, 46144, 46271, 46398, 46525, 46526, 46527, 46583, 46584, 46713, 46842, 46971, 46972, 46974, 46975, 47104, 47233, 47362, 47491, 47620, 47749, 47878, 48007, 48136, 48265, 48394, 48523, 48652, 48781, 48910, 49039, 49168, 49297, 49426, 49555, 49684, 49813, 49942, 50071, 50200, 50329, 50458, 50587, 50716, 50845, 50974, 51103, 51232, 51361, 51490, 51619, 51748, 51877, 52006, 52135, 52264, 52393, 52522, 52651, 52780, 52909, 53038, 53167, 53296, 53425, 53554, 53683, 53812, 53941, 54070, 54199, 54328, 54457, 54586, 54715, 54844, 54911, 55040, 55169, 55298, 55427, 55556, 55685, 55814, 55943, 56072, 56201, 56330, 56459, 56588, 56717, 56846, 56975, 57104, 57233, 57362, 57491, 57620, 57749, 57878, 58007, 58136, 58137, 58202, 58296, 58321, 58322, 58324, 58326, 58328, 58329, 58458, 58587, 58612, 58613, 58615, 58617, 58619, 58620, 58749, 58878, 58880, 58881, 58906, 58907, 58974, 58976, 58978, 59107, 59236, 59247, 59249, 59274, 59275, 59276, 59297, 59300, 59313, 59315, 59317, 59372, 59421, 59497, 59565, 59581, 59640, 59642, 59643, 59649, 59650, 59651, 59719, 59787, 59855, 59923, 59934, 59936, 59937, 59943, 59945, 59946, 59947, 60015, 60083, 60151, 60219, 60287, 60355, 60423, 60491, 60561, 60629, 60699, 60767, 60769, 60772, 60774, 60841, 60843, 60846, 60975, 61104, 61105, 61234, 61363, 61492, 61621, 61750, 61879, 61880, 61882, 61883, 61884, 62013, 62142, 62271, 62400, 62529, 62658, 62787, 62916, 63045, 63174, 63303, 63432, 63561, 63690, 63819, 63948, 64077, 64206, 64335, 64464, 64593, 64722, 64851, 64980, 65109, 65238, 65367, 65496, 65625, 65754, 65883, 66012, 66141, 66270, 66399, 66528, 66657, 66742, 66871, 67000, 67129, 67258, 67387, 67516, 67645, 67774, 67903, 68032, 68161, 68290, 68419, 68548, 68677, 68806, 68935, 69064, 69193, 69322, 69451, 69580, 69709, 69838, 69967, 70096, 70225, 70354, 70483, 70612, 70741, 70870, 70999, 71128, 71257, 71386, 71515, 71644, 71773, 71902, 72031, 72160, 72289, 72418, 72547, 72676, 72805, 72934, 73063, 73192, 73321, 73450, 73579, 73708, 73837, 73966, 74095, 74224, 74353, 74482, 74611, 74740, 74869, 74998, 75127, 75128, 75193, 75194, 75279, 75364, 75449, 75451, 75453, 75455, 75457, 75459, 75512, 75514, 75607, 75709, 75801]];
-    $send(self, '_lex_index_offsets=', Opal.to_a($writer));
+    $send(self, '_lex_index_offsets=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       
       self.$attr_accessor("_lex_indicies");
       return self.$private("_lex_indicies", "_lex_indicies=");
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [[1, 0, 2, 0, 3, 0, 4, 0, 5, 0, 6, 0, 7, 0, 8, 0, 9, 0, 10, 0, 0, 0, 10, 0, 0, 0, 0, 0, 11, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 10, 0, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 14, 14, 12, 14, 12, 14, 14, 12, 12, 14, 14, 14, 15, 14, 14, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 14, 12, 12, 13, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 14, 12, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 12, 12, 12, 12, 12, 12, 12, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 12, 12, 12, 12, 14, 12, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 12, 12, 12, 12, 12, 14, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 12, 12, 12, 12, 12, 12, 18, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 13, 12, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 13, 12, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 13, 19, 20, 20, 20, 19, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 21, 20, 19, 22, 22, 22, 19, 22, 22, 22, 22, 22, 23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 19, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 24, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 25, 22, 19, 22, 22, 22, 19, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 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1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1422, 1422, 1422, 1422, 1239, 1422, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1519, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1422, 1422, 1422, 1422, 1422, 1239, 1422, 1422, 1422, 1422, 1422, 1422, 1422, 1422, 1422, 1422, 1422, 1422, 1422, 1422, 1422, 1422, 1422, 1422, 1422, 1422, 1422, 1422, 1422, 1422, 1422, 1422, 1422, 1422, 1422, 1422, 1422, 1422, 1422, 1292, 1422, 1422, 1422, 1422, 1422, 1422, 1422, 1422, 1422, 1422, 1422, 1422, 1422, 1422, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1422, 1422, 1422, 1422, 1422, 1292, 1422, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1422, 1422, 1422, 1422, 1239, 1422, 1239, 1239, 1239, 1489, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1239, 1422, 1422, 1422, 1422, 1422, 1239, 1520, 1308, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1298, 1248, 1298, 1521, 1523, 1522, 1523, 1523, 1523, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1523, 1522, 1522, 1524, 1522, 1522, 1525, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 357, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1522, 1526, 1522, 353, 354, 353, 353, 353, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 353, 1527, 1527, 355, 1527, 1527, 356, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 357, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 1527, 358, 1527, 360, 1528, 360, 360, 360, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 360, 1528, 1528, 355, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 1528, 358, 1528, 1530, 1529, 1532, 1531, 363, 362, 368, 1527, 366, 1527, 1534, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1535, 1533, 1534, 1533, 1534, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1537, 1533, 1534, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1538, 1533, 1534, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1533, 1539, 1533, 1541, 1539, 0]];
-    $send(self, '_lex_indicies=', Opal.to_a($writer));
+    $send(self, '_lex_indicies=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       
       self.$attr_accessor("_lex_trans_targs");
       return self.$private("_lex_trans_targs", "_lex_trans_targs=");
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [[186, 2, 3, 4, 192, 6, 7, 8, 9, 10, 186, 186, 195, 198, 195, 12, 199, 200, 14, 195, 207, 208, 211, 212, 224, 221, 213, 214, 215, 19, 216, 217, 218, 226, 228, 229, 233, 234, 235, 230, 25, 18, 209, 210, 27, 258, 259, 261, 263, 261, 30, 264, 265, 32, 261, 272, 273, 276, 277, 289, 286, 278, 279, 280, 37, 281, 282, 283, 291, 293, 294, 298, 299, 300, 295, 43, 36, 274, 275, 45, 323, 324, 331, 333, 331, 48, 334, 335, 50, 337, 340, 337, 52, 341, 342, 54, 348, 347, 0, 56, 349, 350, 58, 351, 352, 352, 352, 352, 465, 61, 62, 63, 465, 465, 494, 65, 66, 494, 494, 498, 498, 70, 65, 71, 496, 497, 499, 500, 498, 494, 501, 502, 504, 67, 68, 505, 506, 69, 498, 72, 73, 78, 85, 508, 509, 71, 496, 497, 499, 500, 498, 494, 501, 502, 504, 67, 68, 505, 506, 69, 72, 73, 78, 85, 508, 509, 507, 74, 75, 76, 77, 79, 80, 83, 81, 82, 84, 86, 87, 494, 89, 90, 91, 93, 96, 94, 95, 97, 99, 525, 525, 525, 526, 101, 528, 102, 529, 103, 526, 101, 528, 102, 529, 563, 104, 563, 105, 106, 104, 563, 105, 563, 563, 563, 109, 110, 111, 112, 574, 563, 563, 563, 115, 116, 117, 563, 120, 115, 116, 117, 563, 120, 118, 118, 116, 117, 584, 119, 118, 118, 116, 117, 584, 119, 116, 563, 601, 563, 122, 602, 608, 126, 617, 618, 131, 132, 126, 127, 616, 127, 616, 563, 128, 129, 130, 619, 133, 563, 633, 634, 637, 638, 650, 647, 639, 640, 641, 138, 642, 643, 644, 652, 654, 655, 659, 660, 661, 656, 144, 137, 635, 636, 146, 697, 698, 148, 565, 107, 567, 150, 151, 700, 802, 153, 154, 155, 802, 810, 810, 810, 158, 832, 831, 810, 834, 836, 810, 163, 164, 165, 840, 810, 167, 168, 851, 820, 873, 171, 172, 173, 177, 178, 171, 172, 173, 177, 178, 174, 174, 172, 173, 175, 176, 174, 174, 172, 173, 175, 176, 921, 172, 810, 990, 179, 992, 181, 185, 993, 183, 990, 180, 990, 182, 992, 182, 992, 184, 992, 990, 186, 186, 187, 188, 189, 191, 193, 194, 186, 186, 186, 190, 186, 190, 186, 1, 186, 186, 186, 5, 195, 195, 196, 195, 197, 201, 195, 195, 11, 13, 195, 195, 195, 195, 202, 203, 204, 15, 21, 26, 236, 28, 195, 195, 195, 205, 206, 195, 16, 195, 195, 195, 17, 195, 195, 195, 20, 219, 195, 220, 222, 195, 223, 225, 227, 22, 195, 195, 23, 231, 195, 232, 24, 195, 237, 241, 238, 239, 240, 195, 195, 242, 243, 246, 248, 257, 244, 245, 195, 247, 249, 251, 250, 195, 252, 253, 254, 255, 256, 195, 195, 195, 260, 261, 261, 261, 262, 266, 261, 29, 31, 261, 261, 261, 261, 267, 268, 269, 33, 39, 44, 301, 46, 261, 261, 261, 270, 271, 261, 34, 261, 261, 261, 35, 261, 261, 261, 38, 284, 261, 285, 287, 261, 288, 290, 292, 40, 261, 261, 41, 296, 261, 297, 42, 261, 302, 306, 303, 304, 305, 261, 261, 307, 308, 311, 313, 322, 309, 310, 261, 312, 314, 316, 315, 261, 317, 318, 319, 320, 321, 261, 261, 261, 325, 326, 326, 327, 326, 328, 326, 326, 326, 329, 329, 329, 330, 329, 329, 329, 331, 331, 331, 332, 331, 47, 49, 331, 331, 331, 336, 336, 336, 337, 337, 338, 337, 339, 337, 337, 51, 53, 337, 337, 337, 343, 343, 344, 343, 343, 345, 346, 345, 55, 57, 347, 347, 347, 353, 352, 352, 354, 355, 356, 357, 359, 362, 363, 364, 365, 352, 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494, 494, 494, 494, 494, 494, 494, 512, 494, 512, 494, 494, 494, 494, 520, 494, 88, 92, 98, 525, 527, 530, 100, 525, 525, 526, 531, 531, 532, 533, 535, 537, 538, 531, 531, 534, 531, 534, 531, 536, 531, 531, 531, 540, 539, 539, 541, 542, 543, 545, 547, 548, 553, 560, 539, 539, 539, 539, 544, 539, 544, 539, 546, 539, 539, 540, 549, 550, 551, 552, 554, 555, 558, 556, 557, 559, 561, 562, 564, 563, 572, 573, 575, 576, 578, 579, 580, 581, 583, 585, 586, 589, 590, 615, 621, 622, 623, 700, 701, 702, 703, 704, 582, 706, 723, 728, 735, 740, 742, 748, 751, 752, 756, 750, 760, 771, 775, 778, 786, 790, 793, 794, 563, 104, 105, 563, 107, 566, 563, 563, 568, 570, 571, 563, 569, 563, 563, 563, 563, 563, 108, 563, 563, 563, 563, 563, 577, 563, 577, 563, 563, 113, 563, 114, 563, 563, 582, 563, 587, 563, 588, 563, 563, 563, 591, 600, 563, 121, 603, 604, 605, 563, 606, 123, 609, 610, 124, 613, 614, 563, 592, 594, 563, 593, 563, 563, 595, 598, 599, 563, 596, 597, 563, 563, 563, 563, 563, 563, 607, 563, 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795, 801, 795, 803, 802, 802, 804, 805, 802, 806, 808, 802, 802, 802, 802, 807, 802, 807, 809, 802, 811, 810, 810, 814, 815, 816, 810, 817, 819, 822, 823, 824, 825, 826, 810, 827, 828, 833, 861, 865, 810, 866, 868, 870, 810, 871, 872, 874, 878, 880, 881, 883, 884, 902, 907, 914, 922, 929, 936, 941, 942, 946, 940, 951, 961, 967, 970, 979, 983, 987, 988, 989, 822, 812, 810, 813, 810, 810, 810, 810, 810, 810, 818, 810, 818, 810, 156, 821, 810, 810, 810, 810, 810, 810, 810, 810, 810, 829, 810, 830, 810, 810, 157, 159, 810, 160, 842, 853, 856, 835, 857, 858, 843, 847, 849, 810, 835, 160, 837, 839, 161, 810, 837, 810, 838, 810, 810, 162, 841, 810, 810, 844, 846, 810, 844, 845, 847, 849, 846, 810, 848, 810, 810, 850, 852, 810, 166, 810, 810, 810, 854, 846, 847, 849, 854, 855, 810, 844, 846, 847, 849, 810, 844, 846, 847, 849, 810, 859, 846, 847, 849, 859, 860, 810, 160, 861, 835, 862, 847, 849, 863, 846, 160, 863, 835, 864, 867, 869, 810, 169, 170, 810, 810, 875, 876, 877, 872, 879, 810, 810, 882, 810, 810, 810, 885, 886, 895, 900, 887, 888, 889, 890, 891, 892, 893, 894, 811, 896, 897, 898, 899, 811, 901, 903, 906, 904, 905, 811, 811, 908, 911, 909, 910, 912, 913, 811, 915, 917, 916, 918, 919, 920, 810, 810, 923, 811, 924, 810, 925, 926, 927, 928, 812, 930, 933, 931, 932, 934, 935, 937, 938, 939, 811, 943, 944, 945, 947, 949, 950, 948, 811, 952, 953, 954, 957, 955, 956, 958, 959, 960, 962, 964, 963, 965, 966, 968, 969, 971, 972, 974, 977, 973, 975, 976, 978, 980, 981, 982, 984, 985, 986, 810, 810, 990, 991, 995, 996, 997, 990, 990, 990, 994, 990, 990, 999, 998, 1000, 998, 1001, 1002, 1003, 998, 998]];
-    $send(self, '_lex_trans_targs=', Opal.to_a($writer));
+    $send(self, '_lex_trans_targs=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       
       self.$attr_accessor("_lex_trans_actions");
       return self.$private("_lex_trans_actions", "_lex_trans_actions=");
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [[1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 3, 4, 0, 5, 0, 0, 0, 0, 6, 0, 7, 0, 8, 0, 0, 7, 0, 0, 0, 0, 8, 0, 7, 0, 8, 0, 7, 7, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 10, 0, 0, 0, 0, 11, 0, 7, 0, 8, 0, 0, 7, 0, 0, 0, 0, 8, 0, 7, 0, 8, 0, 7, 7, 0, 0, 0, 0, 0, 0, 0, 0, 12, 0, 13, 0, 0, 0, 0, 14, 0, 15, 0, 0, 0, 0, 0, 16, 0, 0, 0, 0, 0, 0, 17, 18, 19, 20, 21, 0, 0, 0, 22, 23, 24, 0, 0, 25, 26, 27, 28, 29, 30, 30, 31, 32, 30, 33, 32, 34, 32, 30, 30, 31, 30, 35, 30, 30, 36, 30, 30, 30, 30, 30, 30, 0, 37, 38, 0, 39, 38, 40, 38, 0, 0, 37, 0, 41, 0, 0, 0, 0, 0, 0, 0, 0, 28, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 42, 0, 0, 0, 0, 0, 0, 0, 0, 0, 43, 44, 45, 46, 0, 0, 0, 46, 29, 47, 30, 30, 30, 47, 48, 0, 49, 0, 29, 30, 50, 30, 51, 52, 53, 0, 0, 0, 0, 0, 54, 55, 56, 0, 29, 0, 57, 0, 30, 58, 30, 59, 30, 60, 61, 62, 61, 63, 61, 0, 64, 65, 64, 66, 64, 67, 68, 0, 69, 0, 0, 0, 0, 70, 70, 0, 0, 71, 71, 72, 0, 29, 73, 0, 0, 0, 70, 0, 74, 0, 7, 0, 8, 0, 0, 7, 0, 0, 0, 0, 8, 0, 7, 0, 8, 0, 7, 7, 0, 0, 0, 0, 0, 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-    $send(self, '_lex_trans_actions=', Opal.to_a($writer));
+    $send(self, '_lex_trans_actions=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       
       self.$attr_accessor("_lex_to_state_actions");
       return self.$private("_lex_to_state_actions", "_lex_to_state_actions=");
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 96, 0, 0, 0, 0, 0, 0, 0, 0, 96, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 96, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 96, 0, 0, 96, 0, 96, 0, 0, 0, 0, 96, 96, 0, 0, 0, 0, 0, 96, 0, 96, 0, 96, 0, 0, 0, 0, 96, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 96, 0, 0, 0, 0, 0, 0, 0, 96, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 96, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 96, 0, 0, 0, 0, 0, 96, 0, 0, 0, 0, 0, 0, 0, 96, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 96, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 96, 0, 0, 0, 0, 0, 0, 96, 0, 0, 0, 0, 0, 0, 0, 96, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 96, 0, 0, 0, 0, 0, 0, 0, 96, 0, 0, 0, 0, 0]];
-    $send(self, '_lex_to_state_actions=', Opal.to_a($writer));
+    $send(self, '_lex_to_state_actions=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       
       self.$attr_accessor("_lex_from_state_actions");
       return self.$private("_lex_from_state_actions", "_lex_from_state_actions=");
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 97, 0, 0, 0, 0, 0, 0, 0, 0, 97, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 97, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 97, 0, 0, 97, 0, 97, 0, 0, 0, 0, 97, 97, 0, 0, 0, 0, 0, 97, 0, 97, 0, 97, 0, 0, 0, 0, 97, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 97, 0, 0, 0, 0, 0, 0, 0, 97, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 97, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 97, 0, 0, 0, 0, 0, 97, 0, 0, 0, 0, 0, 0, 0, 97, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 97, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 97, 0, 0, 0, 0, 0, 0, 97, 0, 0, 0, 0, 0, 0, 0, 97, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 97, 0, 0, 0, 0, 0, 0, 0, 97, 0, 0, 0, 0, 0]];
-    $send(self, '_lex_from_state_actions=', Opal.to_a($writer));
+    $send(self, '_lex_from_state_actions=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       
       self.$attr_accessor("_lex_eof_trans");
       return self.$private("_lex_eof_trans", "_lex_eof_trans=");
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [[0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 13, 13, 13, 13, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 48, 48, 48, 48, 55, 55, 55, 55, 55, 55, 55, 55, 55, 55, 55, 55, 55, 55, 83, 83, 83, 83, 90, 90, 90, 90, 0, 0, 0, 0, 105, 107, 109, 109, 109, 109, 115, 115, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 119, 180, 180, 180, 180, 180, 180, 180, 180, 180, 180, 180, 180, 190, 192, 192, 192, 204, 204, 204, 212, 214, 214, 214, 214, 214, 220, 212, 212, 212, 212, 212, 212, 212, 246, 246, 246, 246, 246, 246, 212, 262, 212, 262, 246, 246, 212, 268, 268, 268, 268, 268, 268, 268, 268, 268, 268, 268, 268, 268, 268, 212, 246, 246, 246, 246, 303, 303, 303, 308, 310, 310, 310, 314, 314, 317, 317, 317, 317, 322, 322, 322, 308, 314, 314, 314, 314, 314, 314, 314, 314, 314, 353, 360, 362, 362, 362, 362, 353, 0, 378, 379, 380, 382, 384, 386, 384, 384, 0, 396, 397, 401, 401, 402, 403, 412, 413, 414, 414, 414, 417, 417, 419, 420, 421, 421, 421, 423, 424, 425, 425, 425, 428, 428, 421, 431, 431, 421, 417, 417, 436, 437, 437, 437, 440, 440, 437, 437, 437, 443, 443, 443, 443, 449, 450, 450, 450, 450, 458, 450, 450, 450, 450, 463, 450, 450, 450, 450, 450, 450, 469, 470, 471, 471, 0, 478, 482, 482, 483, 484, 493, 494, 495, 495, 495, 498, 498, 500, 501, 502, 502, 502, 504, 505, 506, 506, 506, 509, 509, 502, 512, 512, 502, 498, 498, 517, 518, 518, 518, 521, 521, 518, 518, 518, 524, 524, 524, 524, 530, 531, 531, 531, 531, 539, 531, 531, 531, 531, 544, 531, 531, 531, 531, 531, 531, 550, 551, 552, 552, 0, 559, 560, 0, 566, 0, 573, 577, 577, 578, 0, 0, 587, 588, 592, 592, 593, 0, 598, 0, 601, 0, 604, 604, 605, 606, 0, 647, 649, 650, 651, 652, 654, 656, 660, 660, 651, 651, 651, 651, 662, 651, 651, 656, 651, 651, 647, 666, 666, 666, 666, 666, 666, 656, 656, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 705, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 672, 651, 0, 749, 750, 751, 753, 749, 749, 757, 0, 776, 778, 780, 781, 782, 783, 784, 786, 783, 783, 783, 783, 783, 789, 783, 783, 791, 789, 789, 783, 0, 810, 811, 115, 115, 814, 815, 115, 811, 811, 818, 820, 823, 811, 824, 811, 825, 826, 828, 830, 811, 818, 831, 831, 820, 831, 835, 831, 831, 831, 831, 0, 190, 843, 844, 843, 843, 0, 853, 854, 856, 858, 860, 858, 862, 0, 874, 875, 876, 877, 879, 881, 883, 884, 884, 884, 884, 884, 884, 884, 884, 884, 884, 884, 884, 884, 884, 884, 884, 0, 942, 945, 948, 949, 953, 955, 956, 957, 958, 959, 961, 964, 965, 967, 969, 972, 974, 975, 212, 972, 977, 972, 964, 979, 981, 964, 964, 999, 1002, 1004, 1005, 1009, 1012, 1013, 1014, 1015, 999, 999, 999, 999, 999, 999, 999, 999, 999, 999, 1019, 1023, 1025, 999, 999, 964, 1030, 1031, 1031, 1031, 964, 964, 964, 1032, 1039, 1039, 1041, 1043, 1052, 1053, 1054, 1054, 1054, 1057, 1057, 1059, 1060, 1061, 1061, 1061, 1063, 1064, 1065, 1065, 1065, 1068, 1068, 1061, 1071, 1071, 1061, 1057, 1057, 1076, 1077, 1077, 1077, 1080, 1080, 1077, 1077, 1077, 1083, 1083, 1083, 1083, 1089, 1090, 1090, 1090, 1090, 1098, 1090, 1090, 1090, 1090, 1104, 1090, 1090, 1090, 1090, 1090, 1090, 1090, 1090, 1090, 1090, 1090, 1090, 1090, 1090, 1090, 1090, 1090, 1090, 1090, 1122, 1123, 1124, 1124, 212, 964, 964, 1128, 964, 959, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 212, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 1181, 949, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 942, 1206, 964, 0, 1214, 1215, 1216, 1218, 1220, 1222, 0, 1231, 1232, 1233, 1234, 1236, 1231, 1239, 0, 314, 1294, 1296, 1297, 1298, 1299, 1301, 1303, 1305, 1308, 1308, 314, 1310, 1312, 1313, 1314, 1310, 1316, 1318, 1318, 1321, 1321, 1324, 1335, 314, 1341, 1343, 1345, 1346, 1349, 1350, 1324, 1324, 1353, 1353, 1353, 1359, 1361, 1362, 1365, 1367, 1368, 1369, 1353, 1353, 1376, 1381, 1386, 1353, 1353, 1393, 1393, 1353, 1353, 1318, 1310, 1310, 1318, 1310, 1310, 1305, 314, 1411, 1412, 1412, 1412, 1412, 1412, 1412, 1418, 1305, 1421, 1422, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1462, 1463, 1423, 1423, 1467, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1423, 1521, 1299, 1522, 0, 1528, 1529, 1530, 1532, 1528, 1528, 1528, 0, 1537, 1537, 1537, 1537, 1541]];
-    $send(self, '_lex_eof_trans=', Opal.to_a($writer));
+    $send(self, '_lex_eof_trans=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_start")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [186];
-    $send(self, 'lex_start=', Opal.to_a($writer));
+    $send(self, 'lex_start=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_error")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [0];
-    $send(self, 'lex_error=', Opal.to_a($writer));
+    $send(self, 'lex_error=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_interp_words")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [195];
-    $send(self, 'lex_en_interp_words=', Opal.to_a($writer));
+    $send(self, 'lex_en_interp_words=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_interp_string")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [261];
-    $send(self, 'lex_en_interp_string=', Opal.to_a($writer));
+    $send(self, 'lex_en_interp_string=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_plain_words")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [326];
-    $send(self, 'lex_en_plain_words=', Opal.to_a($writer));
+    $send(self, 'lex_en_plain_words=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_plain_string")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [329];
-    $send(self, 'lex_en_plain_string=', Opal.to_a($writer));
+    $send(self, 'lex_en_plain_string=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_interp_backslash_delimited")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [331];
-    $send(self, 'lex_en_interp_backslash_delimited=', Opal.to_a($writer));
+    $send(self, 'lex_en_interp_backslash_delimited=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_plain_backslash_delimited")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [336];
-    $send(self, 'lex_en_plain_backslash_delimited=', Opal.to_a($writer));
+    $send(self, 'lex_en_plain_backslash_delimited=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_interp_backslash_delimited_words")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [337];
-    $send(self, 'lex_en_interp_backslash_delimited_words=', Opal.to_a($writer));
+    $send(self, 'lex_en_interp_backslash_delimited_words=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_plain_backslash_delimited_words")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [343];
-    $send(self, 'lex_en_plain_backslash_delimited_words=', Opal.to_a($writer));
+    $send(self, 'lex_en_plain_backslash_delimited_words=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_regexp_modifiers")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [345];
-    $send(self, 'lex_en_regexp_modifiers=', Opal.to_a($writer));
+    $send(self, 'lex_en_regexp_modifiers=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_expr_variable")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [347];
-    $send(self, 'lex_en_expr_variable=', Opal.to_a($writer));
+    $send(self, 'lex_en_expr_variable=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_expr_fname")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [352];
-    $send(self, 'lex_en_expr_fname=', Opal.to_a($writer));
+    $send(self, 'lex_en_expr_fname=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_expr_endfn")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [465];
-    $send(self, 'lex_en_expr_endfn=', Opal.to_a($writer));
+    $send(self, 'lex_en_expr_endfn=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_expr_dot")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [473];
-    $send(self, 'lex_en_expr_dot=', Opal.to_a($writer));
+    $send(self, 'lex_en_expr_dot=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_expr_arg")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [494];
-    $send(self, 'lex_en_expr_arg=', Opal.to_a($writer));
+    $send(self, 'lex_en_expr_arg=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_expr_cmdarg")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [525];
-    $send(self, 'lex_en_expr_cmdarg=', Opal.to_a($writer));
+    $send(self, 'lex_en_expr_cmdarg=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_expr_endarg")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [531];
-    $send(self, 'lex_en_expr_endarg=', Opal.to_a($writer));
+    $send(self, 'lex_en_expr_endarg=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_expr_mid")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [539];
-    $send(self, 'lex_en_expr_mid=', Opal.to_a($writer));
+    $send(self, 'lex_en_expr_mid=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_expr_beg")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [563];
-    $send(self, 'lex_en_expr_beg=', Opal.to_a($writer));
+    $send(self, 'lex_en_expr_beg=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_expr_labelarg")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [795];
-    $send(self, 'lex_en_expr_labelarg=', Opal.to_a($writer));
+    $send(self, 'lex_en_expr_labelarg=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_expr_value")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [802];
-    $send(self, 'lex_en_expr_value=', Opal.to_a($writer));
+    $send(self, 'lex_en_expr_value=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_expr_end")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [810];
-    $send(self, 'lex_en_expr_end=', Opal.to_a($writer));
+    $send(self, 'lex_en_expr_end=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_leading_dot")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [990];
-    $send(self, 'lex_en_leading_dot=', Opal.to_a($writer));
+    $send(self, 'lex_en_leading_dot=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_line_comment")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [998];
-    $send(self, 'lex_en_line_comment=', Opal.to_a($writer));
+    $send(self, 'lex_en_line_comment=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("lex_en_line_begin")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = [186];
-    $send(self, 'lex_en_line_begin=', Opal.to_a($writer));
+    $send(self, 'lex_en_line_begin=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
-    Opal.const_set($nesting[0], 'ESCAPES', $hash("a".$ord(), "\u0007", "b".$ord(), "\b", "e".$ord(), "\u001b", "f".$ord(), "\f", "n".$ord(), "\n", "r".$ord(), "\r", "s".$ord(), " ", "t".$ord(), "\t", "v".$ord(), "\v", "\\".$ord(), "\\").$freeze());
-    Opal.const_set($nesting[0], 'REGEXP_META_CHARACTERS', $send($$($nesting, 'Regexp'), 'union', Opal.to_a("\\$()*+.<>?[]^{|}".$chars())).$freeze());
+    $const_set($nesting[0], 'ESCAPES', $hash("a".$ord(), "\u0007", "b".$ord(), "\b", "e".$ord(), "\u001b", "f".$ord(), "\f", "n".$ord(), "\n", "r".$ord(), "\r", "s".$ord(), " ", "t".$ord(), "\t", "v".$ord(), "\v", "\\".$ord(), "\\").$freeze());
+    $const_set($nesting[0], 'REGEXP_META_CHARACTERS', $send($$('Regexp'), 'union', $to_a("\\$()*+.<>?[]^{|}".$chars())).$freeze());
     self.$attr_reader("source_buffer");
     self.$attr_accessor("diagnostics");
     self.$attr_accessor("static_env");
@@ -7827,7 +6890,7 @@ Opal.modules["parser/lexer"] = function(Opal) {
     self.$attr_accessor("tokens", "comments");
     self.$attr_reader("paren_nest", "cmdarg_stack", "cond_stack", "lambda_stack");
     
-    Opal.def(self, '$initialize', $Lexer_initialize$1 = function $$initialize(version) {
+    $def(self, '$initialize', function $$initialize(version) {
       var self = this;
 
       
@@ -7837,23 +6900,22 @@ Opal.modules["parser/lexer"] = function(Opal) {
       self.tokens = nil;
       self.comments = nil;
       return self.$reset();
-    }, $Lexer_initialize$1.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$reset', $Lexer_reset$2 = function $$reset(reset_state) {
+    $def(self, '$reset', function $$reset(reset_state) {
       var self = this;
 
       
       
-      if (reset_state == null) {
-        reset_state = true;
-      };
+      if (reset_state == null) reset_state = true;;
       if ($truthy(reset_state)) {
         
         self.cs = self.$class().$lex_en_line_begin();
-        self.cond = $$($nesting, 'StackState').$new("cond");
-        self.cmdarg = $$($nesting, 'StackState').$new("cmdarg");
+        self.cond = $$('StackState').$new("cond");
+        self.cmdarg = $$('StackState').$new("cmdarg");
         self.cond_stack = [];
-        self.cmdarg_stack = [];};
+        self.cmdarg_stack = [];
+      };
       self.force_utf32 = false;
       self.source_pts = nil;
       self.p = 0;
@@ -7879,9 +6941,9 @@ Opal.modules["parser/lexer"] = function(Opal) {
       self.dedent_level = nil;
       self.command_start = true;
       return (self.cs_before_block_comment = self.$class().$lex_en_line_begin());
-    }, $Lexer_reset$2.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$source_buffer=', $Lexer_source_buffer$eq$3 = function(source_buffer) {
+    $def(self, '$source_buffer=', function $Lexer_source_buffer$eq$1(source_buffer) {
       var self = this, source = nil;
 
       
@@ -7889,12 +6951,12 @@ Opal.modules["parser/lexer"] = function(Opal) {
       if ($truthy(self.source_buffer)) {
         
         source = self.source_buffer.$source();
-        if (source.$encoding()['$==']($$$($$($nesting, 'Encoding'), 'UTF_8'))) {
+        if ($eqeq(source.$encoding(), $$$($$('Encoding'), 'UTF_8'))) {
           self.source_pts = source.$unpack("U*")
         } else {
           self.source_pts = source.$unpack("C*")
         };
-        if (self.source_pts['$[]'](0)['$=='](65279)) {
+        if ($eqeq(self.source_pts['$[]'](0), 65279)) {
           return (self.p = 1)
         } else {
           return nil
@@ -7902,69 +6964,70 @@ Opal.modules["parser/lexer"] = function(Opal) {
       } else {
         return (self.source_pts = nil)
       };
-    }, $Lexer_source_buffer$eq$3.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$encoding', $Lexer_encoding$4 = function $$encoding() {
+    $def(self, '$encoding', function $$encoding() {
       var self = this;
 
       return self.source_buffer.$source().$encoding()
-    }, $Lexer_encoding$4.$$arity = 0);
-    Opal.const_set($nesting[0], 'LEX_STATES', $hash2(["line_begin", "expr_dot", "expr_fname", "expr_value", "expr_beg", "expr_mid", "expr_arg", "expr_cmdarg", "expr_end", "expr_endarg", "expr_endfn", "expr_labelarg", "interp_string", "interp_words", "plain_string", "plain_words"], {"line_begin": self.$lex_en_line_begin(), "expr_dot": self.$lex_en_expr_dot(), "expr_fname": self.$lex_en_expr_fname(), "expr_value": self.$lex_en_expr_value(), "expr_beg": self.$lex_en_expr_beg(), "expr_mid": self.$lex_en_expr_mid(), "expr_arg": self.$lex_en_expr_arg(), "expr_cmdarg": self.$lex_en_expr_cmdarg(), "expr_end": self.$lex_en_expr_end(), "expr_endarg": self.$lex_en_expr_endarg(), "expr_endfn": self.$lex_en_expr_endfn(), "expr_labelarg": self.$lex_en_expr_labelarg(), "interp_string": self.$lex_en_interp_string(), "interp_words": self.$lex_en_interp_words(), "plain_string": self.$lex_en_plain_string(), "plain_words": self.$lex_en_plain_string()}));
+    }, 0);
+    $const_set($nesting[0], 'LEX_STATES', $hash2(["line_begin", "expr_dot", "expr_fname", "expr_value", "expr_beg", "expr_mid", "expr_arg", "expr_cmdarg", "expr_end", "expr_endarg", "expr_endfn", "expr_labelarg", "interp_string", "interp_words", "plain_string", "plain_words"], {"line_begin": self.$lex_en_line_begin(), "expr_dot": self.$lex_en_expr_dot(), "expr_fname": self.$lex_en_expr_fname(), "expr_value": self.$lex_en_expr_value(), "expr_beg": self.$lex_en_expr_beg(), "expr_mid": self.$lex_en_expr_mid(), "expr_arg": self.$lex_en_expr_arg(), "expr_cmdarg": self.$lex_en_expr_cmdarg(), "expr_end": self.$lex_en_expr_end(), "expr_endarg": self.$lex_en_expr_endarg(), "expr_endfn": self.$lex_en_expr_endfn(), "expr_labelarg": self.$lex_en_expr_labelarg(), "interp_string": self.$lex_en_interp_string(), "interp_words": self.$lex_en_interp_words(), "plain_string": self.$lex_en_plain_string(), "plain_words": self.$lex_en_plain_string()}));
     
-    Opal.def(self, '$state', $Lexer_state$5 = function $$state() {
+    $def(self, '$state', function $$state() {
       var self = this;
 
-      return $$($nesting, 'LEX_STATES').$invert().$fetch(self.cs, self.cs)
-    }, $Lexer_state$5.$$arity = 0);
+      return $$('LEX_STATES').$invert().$fetch(self.cs, self.cs)
+    }, 0);
     
-    Opal.def(self, '$state=', $Lexer_state$eq$6 = function(state) {
+    $def(self, '$state=', function $Lexer_state$eq$2(state) {
       var self = this;
 
-      return (self.cs = $$($nesting, 'LEX_STATES').$fetch(state))
-    }, $Lexer_state$eq$6.$$arity = 1);
+      return (self.cs = $$('LEX_STATES').$fetch(state))
+    }, 1);
     
-    Opal.def(self, '$push_cmdarg', $Lexer_push_cmdarg$7 = function $$push_cmdarg() {
+    $def(self, '$push_cmdarg', function $$push_cmdarg() {
       var self = this;
 
       
       self.cmdarg_stack.$push(self.cmdarg);
-      return (self.cmdarg = $$($nesting, 'StackState').$new("" + "cmdarg." + (self.cmdarg_stack.$count())));
-    }, $Lexer_push_cmdarg$7.$$arity = 0);
+      return (self.cmdarg = $$('StackState').$new("cmdarg." + (self.cmdarg_stack.$count())));
+    }, 0);
     
-    Opal.def(self, '$pop_cmdarg', $Lexer_pop_cmdarg$8 = function $$pop_cmdarg() {
+    $def(self, '$pop_cmdarg', function $$pop_cmdarg() {
       var self = this;
 
       return (self.cmdarg = self.cmdarg_stack.$pop())
-    }, $Lexer_pop_cmdarg$8.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$push_cond', $Lexer_push_cond$9 = function $$push_cond() {
+    $def(self, '$push_cond', function $$push_cond() {
       var self = this;
 
       
       self.cond_stack.$push(self.cond);
-      return (self.cond = $$($nesting, 'StackState').$new("" + "cond." + (self.cond_stack.$count())));
-    }, $Lexer_push_cond$9.$$arity = 0);
+      return (self.cond = $$('StackState').$new("cond." + (self.cond_stack.$count())));
+    }, 0);
     
-    Opal.def(self, '$pop_cond', $Lexer_pop_cond$10 = function $$pop_cond() {
+    $def(self, '$pop_cond', function $$pop_cond() {
       var self = this;
 
       return (self.cond = self.cond_stack.$pop())
-    }, $Lexer_pop_cond$10.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$dedent_level', $Lexer_dedent_level$11 = function $$dedent_level() {
+    $def(self, '$dedent_level', function $$dedent_level() {
       var $a, self = this, dedent_level = nil;
 
       
       $a = [self.dedent_level, nil], (dedent_level = $a[0]), (self.dedent_level = $a[1]), $a;
       return dedent_level;
-    }, $Lexer_dedent_level$11.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$advance', $Lexer_advance$12 = function $$advance() {
-      var $a, $b, $$13, $$14, $$15, $$16, $$17, $$18, $$19, $$20, $$21, $$22, $$23, $$24, $$25, $$26, $$27, $$28, $$29, $$30, $$31, $$32, $$33, $$34, $$35, $$36, $$37, $$38, $$39, $$40, $$41, self = this, klass = nil, _lex_trans_keys = nil, _lex_key_spans = nil, _lex_index_offsets = nil, _lex_indicies = nil, _lex_trans_targs = nil, _lex_trans_actions = nil, _lex_to_state_actions = nil, _lex_from_state_actions = nil, _lex_eof_trans = nil, pe = nil, p = nil, eof = nil, cmd_state = nil, testEof = nil, _slen = nil, _trans = nil, _keys = nil, _inds = nil, _acts = nil, _nacts = nil, _goto_level = nil, _resume = nil, _eof_trans = nil, _again = nil, _test_eof = nil, _out = nil, $case = nil, _wide = nil, $ret_or_1 = nil, $ret_or_2 = nil, $ret_or_3 = nil, tm = nil, heredoc_e = nil, diag_msg = nil, ident_tok = nil, ident_ts = nil, ident_te = nil, current_literal = nil, $writer = nil, line = nil, $ret_or_4 = nil, string = nil, $ret_or_5 = nil, lookahead = nil, $ret_or_6 = nil, token = nil, message = nil, $ret_or_7 = nil, $ret_or_8 = nil, escaped_char = nil, $ret_or_9 = nil, $ret_or_10 = nil, $ret_or_11 = nil, $ret_or_12 = nil, $ret_or_13 = nil, $ret_or_14 = nil, $ret_or_15 = nil, $ret_or_16 = nil, $ret_or_17 = nil, $ret_or_18 = nil, $ret_or_19 = nil, $ret_or_20 = nil, $ret_or_21 = nil, $ret_or_22 = nil, $ret_or_23 = nil, $ret_or_24 = nil, $ret_or_25 = nil, $ret_or_26 = nil, $ret_or_27 = nil, $ret_or_28 = nil, $ret_or_29 = nil, $ret_or_30 = nil, $ret_or_31 = nil, $ret_or_32 = nil, $ret_or_33 = nil, $ret_or_34 = nil, $ret_or_35 = nil, $ret_or_36 = nil, $ret_or_37 = nil, $ret_or_38 = nil, $ret_or_39 = nil, $ret_or_40 = nil, $ret_or_41 = nil, $ret_or_42 = nil, $ret_or_43 = nil, $ret_or_44 = nil, $ret_or_45 = nil, $ret_or_46 = nil, $ret_or_47 = nil, $ret_or_48 = nil, $ret_or_49 = nil, $ret_or_50 = nil, $ret_or_51 = nil, $ret_or_52 = nil, $ret_or_53 = nil, $ret_or_54 = nil, $ret_or_55 = nil, $ret_or_56 = nil, $ret_or_57 = nil, $ret_or_58 = nil, $ret_or_59 = nil, unknown_options = nil, type = nil, delimiter = nil, $ret_or_60 = nil, escape = nil, ident = nil, $ret_or_61 = nil, $ret_or_62 = nil, $ret_or_63 = nil, followed_by_nl = nil, nl_emitted = nil, dots_te = nil, $ret_or_64 = nil, $ret_or_65 = nil, $ret_or_66 = nil, $ret_or_67 = nil, $ret_or_68 = nil, value = nil, $ret_or_69 = nil, $ret_or_70 = nil, $ret_or_71 = nil, $ret_or_72 = nil, digits = nil, $ret_or_73 = nil, $ret_or_74 = nil, $ret_or_75 = nil, invalid_idx = nil, invalid_s = nil, $ret_or_76 = nil, $ret_or_77 = nil, $ret_or_78 = nil, $ret_or_79 = nil, $ret_or_80 = nil, $ret_or_81 = nil, $ret_or_82 = nil, $ret_or_83 = nil, $ret_or_84 = nil, $ret_or_85 = nil, $ret_or_86 = nil, $ret_or_87 = nil, $ret_or_88 = nil, $ret_or_89 = nil, $ret_or_90 = nil, $ret_or_91 = nil, $ret_or_92 = nil, $ret_or_93 = nil, $ret_or_94 = nil, $ret_or_95 = nil, $ret_or_96 = nil, $ret_or_97 = nil, $ret_or_98 = nil, $ret_or_99 = nil, $ret_or_100 = nil, $ret_or_101 = nil, $ret_or_102 = nil, $ret_or_103 = nil, $ret_or_104 = nil, $ret_or_105 = nil, $ret_or_106 = nil, $ret_or_107 = nil, $ret_or_108 = nil, $ret_or_109 = nil, $ret_or_110 = nil, $ret_or_111 = nil, codepoints = nil, codepoint_s = nil, $ret_or_112 = nil, spaces_p = nil, $ret_or_113 = nil, $ret_or_114 = nil, $ret_or_115 = nil, $ret_or_116 = nil, $ret_or_117 = nil, $ret_or_118 = nil, $ret_or_119 = nil, $ret_or_120 = nil, $ret_or_121 = nil, $ret_or_122 = nil, $ret_or_123 = nil, $ret_or_124 = nil, $ret_or_125 = nil, $ret_or_126 = nil, $ret_or_127 = nil, $ret_or_128 = nil, $ret_or_129 = nil, $ret_or_130 = nil, codepoint = nil, $ret_or_131 = nil, $ret_or_132 = nil, $ret_or_133 = nil, $ret_or_134 = nil, $ret_or_135 = nil, $ret_or_136 = nil, $ret_or_137 = nil, $ret_or_138 = nil, $ret_or_139 = nil, $ret_or_140 = nil, $ret_or_141 = nil, $ret_or_142 = nil, $ret_or_143 = nil, $ret_or_144 = nil, $ret_or_145 = nil, $ret_or_146 = nil, $ret_or_147 = nil, $ret_or_148 = nil, $ret_or_149 = nil, $ret_or_150 = nil, $ret_or_151 = nil, $ret_or_152 = nil, $ret_or_153 = nil, $ret_or_154 = nil, $ret_or_155 = nil, $ret_or_156 = nil, $ret_or_157 = nil, $ret_or_158 = nil, $ret_or_159 = nil, $ret_or_160 = nil, $ret_or_161 = nil, $ret_or_162 = nil, $ret_or_163 = nil, $ret_or_164 = nil, $ret_or_165 = nil, $ret_or_166 = nil, $ret_or_167 = nil, $ret_or_168 = nil, $ret_or_169 = nil, $ret_or_170 = nil, $ret_or_171 = nil, $ret_or_172 = nil, $ret_or_173 = nil, $ret_or_174 = nil, $ret_or_175 = nil, $ret_or_176 = nil, $ret_or_177 = nil, $ret_or_178 = nil, $ret_or_179 = nil, $ret_or_180 = nil, $ret_or_181 = nil, $ret_or_182 = nil, $ret_or_183 = nil, $ret_or_184 = nil, $ret_or_185 = nil, $ret_or_186 = nil, $ret_or_187 = nil, $ret_or_188 = nil, $ret_or_189 = nil, $ret_or_190 = nil, $ret_or_191 = nil, $ret_or_192 = nil, $ret_or_193 = nil, $ret_or_194 = nil, $ret_or_195 = nil, $ret_or_196 = nil, $ret_or_197 = nil, $ret_or_198 = nil, $ret_or_199 = nil, $ret_or_200 = nil, $ret_or_201 = nil, $ret_or_202 = nil, $ret_or_203 = nil, $ret_or_204 = nil, $ret_or_205 = nil, $ret_or_206 = nil, $ret_or_207 = nil, $ret_or_208 = nil, $ret_or_209 = nil, $ret_or_210 = nil, $ret_or_211 = nil, $ret_or_212 = nil, $ret_or_213 = nil, $ret_or_214 = nil, $ret_or_215 = nil, $ret_or_216 = nil, $ret_or_217 = nil, $ret_or_218 = nil, $ret_or_219 = nil, $ret_or_220 = nil, $ret_or_221 = nil, $ret_or_222 = nil, $ret_or_223 = nil, $ret_or_224 = nil, $ret_or_225 = nil, $ret_or_226 = nil, $ret_or_227 = nil, $ret_or_228 = nil, $ret_or_229 = nil, $ret_or_230 = nil, $ret_or_231 = nil, $ret_or_232 = nil, $ret_or_233 = nil, $ret_or_234 = nil, $ret_or_235 = nil, $ret_or_236 = nil, $ret_or_237 = nil, $ret_or_238 = nil, $ret_or_239 = nil, $ret_or_240 = nil, $ret_or_241 = nil, $ret_or_242 = nil, $ret_or_243 = nil, $ret_or_244 = nil, $ret_or_245 = nil, $ret_or_246 = nil, $ret_or_247 = nil, $ret_or_248 = nil, $ret_or_249 = nil, $ret_or_250 = nil, $ret_or_251 = nil, $ret_or_252 = nil, $ret_or_253 = nil, $ret_or_254 = nil, $ret_or_255 = nil, $ret_or_256 = nil, $ret_or_257 = nil, $ret_or_258 = nil, $ret_or_259 = nil, $ret_or_260 = nil, $ret_or_261 = nil, $ret_or_262 = nil, $ret_or_263 = nil, $ret_or_264 = nil, $ret_or_265 = nil, $ret_or_266 = nil, $ret_or_267 = nil, $ret_or_268 = nil, $ret_or_269 = nil, $ret_or_270 = nil, $ret_or_271 = nil, $ret_or_272 = nil, $ret_or_273 = nil, $ret_or_274 = nil, $ret_or_275 = nil, $ret_or_276 = nil, $ret_or_277 = nil, $ret_or_278 = nil, $ret_or_279 = nil, $ret_or_280 = nil, $ret_or_281 = nil, $ret_or_282 = nil, $ret_or_283 = nil, $ret_or_284 = nil, $ret_or_285 = nil, $ret_or_286 = nil, $ret_or_287 = nil, $ret_or_288 = nil, $ret_or_289 = nil, $ret_or_290 = nil, $ret_or_291 = nil, $ret_or_292 = nil, $ret_or_293 = nil, $ret_or_294 = nil, $ret_or_295 = nil, $ret_or_296 = nil, $ret_or_297 = nil, $ret_or_298 = nil, $ret_or_299 = nil, $ret_or_300 = nil, $ret_or_301 = nil, $ret_or_302 = nil, $ret_or_303 = nil, new_herebody_s = nil, indent = nil, $ret_or_304 = nil, dedent_body = nil, $ret_or_305 = nil, $ret_or_306 = nil, $ret_or_307 = nil, $ret_or_308 = nil, $ret_or_309 = nil, $ret_or_310 = nil, $ret_or_311 = nil, $ret_or_312 = nil, $ret_or_313 = nil, $ret_or_314 = nil, $ret_or_315 = nil, $ret_or_316 = nil, $ret_or_317 = nil, $ret_or_318 = nil, $ret_or_319 = nil, $ret_or_320 = nil, $ret_or_321 = nil, $ret_or_322 = nil, $ret_or_323 = nil, $ret_or_324 = nil, $ret_or_325 = nil, $ret_or_326 = nil, $ret_or_327 = nil, $ret_or_328 = nil, $ret_or_329 = nil, $ret_or_330 = nil, $ret_or_331 = nil, $ret_or_332 = nil, $ret_or_333 = nil, $ret_or_334 = nil, $ret_or_335 = nil, $ret_or_336 = nil, $ret_or_337 = nil, $ret_or_338 = nil, $ret_or_339 = nil, $ret_or_340 = nil, $ret_or_341 = nil, $ret_or_342 = nil, $ret_or_343 = nil, $ret_or_344 = nil, $ret_or_345 = nil, $ret_or_346 = nil, $ret_or_347 = nil, $ret_or_348 = nil, $ret_or_349 = nil, $ret_or_350 = nil, $ret_or_351 = nil, $ret_or_352 = nil, $ret_or_353 = nil, $ret_or_354 = nil, $ret_or_355 = nil, $ret_or_356 = nil, $ret_or_357 = nil, $ret_or_358 = nil, $ret_or_359 = nil, $ret_or_360 = nil, $ret_or_361 = nil, $ret_or_362 = nil, $ret_or_363 = nil, $ret_or_364 = nil, $ret_or_365 = nil, $ret_or_366 = nil, $ret_or_367 = nil, $ret_or_368 = nil, $ret_or_369 = nil, $ret_or_370 = nil, $ret_or_371 = nil, $ret_or_372 = nil, $ret_or_373 = nil, $ret_or_374 = nil, $ret_or_375 = nil, $ret_or_376 = nil, $ret_or_377 = nil, $ret_or_378 = nil, $ret_or_379 = nil, $ret_or_380 = nil, $ret_or_381 = nil, $ret_or_382 = nil, $ret_or_383 = nil, $ret_or_384 = nil, $ret_or_385 = nil, $ret_or_386 = nil, $ret_or_387 = nil, $ret_or_388 = nil, $ret_or_389 = nil, $ret_or_390 = nil, $ret_or_391 = nil, $ret_or_392 = nil, $ret_or_393 = nil, $ret_or_394 = nil, $ret_or_395 = nil, $ret_or_396 = nil, $ret_or_397 = nil, $ret_or_398 = nil, $ret_or_399 = nil, $ret_or_400 = nil, $ret_or_401 = nil, $ret_or_402 = nil, $ret_or_403 = nil, $ret_or_404 = nil, $ret_or_405 = nil, $ret_or_406 = nil, $ret_or_407 = nil, $ret_or_408 = nil, $ret_or_409 = nil, $ret_or_410 = nil, $ret_or_411 = nil, $ret_or_412 = nil, $ret_or_413 = nil, $ret_or_414 = nil, $ret_or_415 = nil, $ret_or_416 = nil, $ret_or_417 = nil, $ret_or_418 = nil, $ret_or_419 = nil, $ret_or_420 = nil, $ret_or_421 = nil, $ret_or_422 = nil, $ret_or_423 = nil, $ret_or_424 = nil, $ret_or_425 = nil, $ret_or_426 = nil, $ret_or_427 = nil, $ret_or_428 = nil, $ret_or_429 = nil, $ret_or_430 = nil, $ret_or_431 = nil, $ret_or_432 = nil, $ret_or_433 = nil, $ret_or_434 = nil, $ret_or_435 = nil, $ret_or_436 = nil, $ret_or_437 = nil, $ret_or_438 = nil, $ret_or_439 = nil, $ret_or_440 = nil, $ret_or_441 = nil, $ret_or_442 = nil, $ret_or_443 = nil, $ret_or_444 = nil, $ret_or_445 = nil, $ret_or_446 = nil, $ret_or_447 = nil, $ret_or_448 = nil, $ret_or_449 = nil, $ret_or_450 = nil, $ret_or_451 = nil, $ret_or_452 = nil, $ret_or_453 = nil, $ret_or_454 = nil, $ret_or_455 = nil, $ret_or_456 = nil, $ret_or_457 = nil, $ret_or_458 = nil, $ret_or_459 = nil, $ret_or_460 = nil, $ret_or_461 = nil, $ret_or_462 = nil, $ret_or_463 = nil, $ret_or_464 = nil, $ret_or_465 = nil, $ret_or_466 = nil, $ret_or_467 = nil, $ret_or_468 = nil, $ret_or_469 = nil, $ret_or_470 = nil, $ret_or_471 = nil, $ret_or_472 = nil, $ret_or_473 = nil, $ret_or_474 = nil, $ret_or_475 = nil, $ret_or_476 = nil, $ret_or_477 = nil, $ret_or_478 = nil, $ret_or_479 = nil, $ret_or_480 = nil, $ret_or_481 = nil, $ret_or_482 = nil, $ret_or_483 = nil, $ret_or_484 = nil, $ret_or_485 = nil, $ret_or_486 = nil, $ret_or_487 = nil, $ret_or_488 = nil, $ret_or_489 = nil, $ret_or_490 = nil, $ret_or_491 = nil, $ret_or_492 = nil, $ret_or_493 = nil, $ret_or_494 = nil, $ret_or_495 = nil, $ret_or_496 = nil, $ret_or_497 = nil, $ret_or_498 = nil, $ret_or_499 = nil, $ret_or_500 = nil, $ret_or_501 = nil, $ret_or_502 = nil, $ret_or_503 = nil, $ret_or_504 = nil, $ret_or_505 = nil, $ret_or_506 = nil, $ret_or_507 = nil, $ret_or_508 = nil, $ret_or_509 = nil, $ret_or_510 = nil, $ret_or_511 = nil, $ret_or_512 = nil, $ret_or_513 = nil, $ret_or_514 = nil, $ret_or_515 = nil, $ret_or_516 = nil, $ret_or_517 = nil, $ret_or_518 = nil, $ret_or_519 = nil, $ret_or_520 = nil, $ret_or_521 = nil, $ret_or_522 = nil;
+    $def(self, '$advance', function $$advance() {
+      var $a, $b, self = this, klass = nil, _lex_trans_keys = nil, _lex_key_spans = nil, _lex_index_offsets = nil, _lex_indicies = nil, _lex_trans_targs = nil, _lex_trans_actions = nil, _lex_to_state_actions = nil, _lex_from_state_actions = nil, _lex_eof_trans = nil, pe = nil, p = nil, eof = nil, cmd_state = nil, testEof = nil, _slen = nil, _trans = nil, _keys = nil, _inds = nil, _acts = nil, _nacts = nil, _goto_level = nil, _resume = nil, _eof_trans = nil, _again = nil, _test_eof = nil, _out = nil, $ret_or_1 = nil, _wide = nil, tm = nil, heredoc_e = nil, diag_msg = nil, ident_tok = nil, ident_ts = nil, ident_te = nil, current_literal = nil, $writer = nil, line = nil, string = nil, lookahead = nil, token = nil, message = nil, escaped_char = nil, $ret_or_2 = nil, unknown_options = nil, type = nil, delimiter = nil, escape = nil, ident = nil, followed_by_nl = nil, nl_emitted = nil, dots_te = nil, value = nil, digits = nil, invalid_idx = nil, invalid_s = nil, codepoints = nil, codepoint_s = nil, spaces_p = nil, codepoint = nil, new_herebody_s = nil, indent = nil, dedent_body = nil;
 
       
       if ($truthy(self.token_queue['$any?']())) {
-        return self.token_queue.$shift()};
+        return self.token_queue.$shift()
+      };
       klass = self.$class();
       _lex_trans_keys = klass.$send("_lex_trans_keys");
       _lex_key_spans = klass.$send("_lex_key_spans");
@@ -7981,7 +7044,7 @@ Opal.modules["parser/lexer"] = function(Opal) {
       self.command_start = false;
       
       testEof = false;
-      $b = nil, $a = Opal.to_ary($b), (_slen = ($a[0] == null ? nil : $a[0])), (_trans = ($a[1] == null ? nil : $a[1])), (_keys = ($a[2] == null ? nil : $a[2])), (_inds = ($a[3] == null ? nil : $a[3])), (_acts = ($a[4] == null ? nil : $a[4])), (_nacts = ($a[5] == null ? nil : $a[5])), $b;
+      $b = nil, $a = $to_ary($b), (_slen = ($a[0] == null ? nil : $a[0])), (_trans = ($a[1] == null ? nil : $a[1])), (_keys = ($a[2] == null ? nil : $a[2])), (_inds = ($a[3] == null ? nil : $a[3])), (_acts = ($a[4] == null ? nil : $a[4])), (_nacts = ($a[5] == null ? nil : $a[5])), $b;
       _goto_level = 0;
       _resume = 10;
       _eof_trans = 15;
@@ -7992,11015 +7055,9462 @@ Opal.modules["parser/lexer"] = function(Opal) {
         
         if ($truthy($rb_le(_goto_level, 0))) {
           
-          if (p['$=='](pe)) {
+          if ($eqeq(p, pe)) {
             
             _goto_level = _test_eof;
-            continue;;};
-          if (self.cs['$=='](0)) {
+            continue;;
+          };
+          if ($eqeq(self.cs, 0)) {
             
             _goto_level = _out;
-            continue;;};};
+            continue;;
+          };
+        };
         if ($truthy($rb_le(_goto_level, _resume))) {
           
-          $case = _lex_from_state_actions['$[]'](self.cs);
-          if ((97)['$===']($case)) {
-          self.ts = p;};
+          if ($eqeqeq(97, ($ret_or_1 = _lex_from_state_actions['$[]'](self.cs)))) {
+            
+            self.ts = p;
+          } else {
+            nil
+          };
           _keys = self.cs['$<<'](1);
           _inds = _lex_index_offsets['$[]'](self.cs);
           _slen = _lex_key_spans['$[]'](self.cs);
-          _wide = (function() {if ($truthy(($ret_or_1 = self.source_pts['$[]'](p)))) {
-            return $ret_or_1
-          } else {
-            return 0
-          }; return nil; })();
-          _trans = (function() {if ($truthy((function() {if ($truthy(($ret_or_2 = (function() {if ($truthy(($ret_or_3 = $rb_gt(_slen, 0)))) {
-            return $rb_le(_lex_trans_keys['$[]'](_keys), _wide)
-          } else {
-            return $ret_or_3
-          }; return nil; })()))) {
-            return $rb_le(_wide, _lex_trans_keys['$[]']($rb_plus(_keys, 1)))
-          } else {
-            return $ret_or_2
-          }; return nil; })())) {
-            return _lex_indicies['$[]']($rb_minus($rb_plus(_inds, _wide), _lex_trans_keys['$[]'](_keys)))
-          } else {
-            return _lex_indicies['$[]']($rb_plus(_inds, _slen))
-          }; return nil; })();};
+          _wide = ($truthy(($ret_or_1 = self.source_pts['$[]'](p))) ? ($ret_or_1) : (0));
+          _trans = ((($truthy($rb_gt(_slen, 0)) && ($truthy($rb_le(_lex_trans_keys['$[]'](_keys), _wide)))) && ($truthy($rb_le(_wide, _lex_trans_keys['$[]']($rb_plus(_keys, 1)))))) ? (_lex_indicies['$[]']($rb_minus($rb_plus(_inds, _wide), _lex_trans_keys['$[]'](_keys)))) : (_lex_indicies['$[]']($rb_plus(_inds, _slen))));
+        };
         if ($truthy($rb_le(_goto_level, _eof_trans))) {
           
           self.cs = _lex_trans_targs['$[]'](_trans);
-          if ($truthy(_lex_trans_actions['$[]'](_trans)['$!='](0))) {
-            $case = _lex_trans_actions['$[]'](_trans);
-            if ((29)['$===']($case)) {
-            self.newline_s = p;}
-            else if ((117)['$===']($case)) {
-            self.escape_s = p;
-            self.escape = nil;}
-            else if ((30)['$===']($case)) {
-            if ($truthy(self.herebody_s)) {
-              
-              p = self.herebody_s;
-              self.herebody_s = nil;};}
-            else if ((60)['$===']($case)) {
-            self.sharp_s = $rb_minus(p, 1);}
-            else if ((64)['$===']($case)) {
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());}
-            else if ((310)['$===']($case)) {
-            tm = p;}
-            else if ((37)['$===']($case)) {
-            tm = p;}
-            else if ((39)['$===']($case)) {
-            tm = p;}
-            else if ((41)['$===']($case)) {
-            tm = p;}
-            else if ((71)['$===']($case)) {
-            heredoc_e = p;}
-            else if ((349)['$===']($case)) {
-            tm = $rb_minus(p, 1);
-            diag_msg = "ivar_name";}
-            else if ((352)['$===']($case)) {
-            tm = $rb_minus(p, 2);
-            diag_msg = "cvar_name";}
-            else if ((360)['$===']($case)) {
-            self.escape = nil;}
-            else if ((392)['$===']($case)) {
-            tm = p;}
-            else if ((308)['$===']($case)) {
-            ident_tok = self.$tok();
-            ident_ts = self.ts;
-            ident_te = self.te;}
-            else if ((479)['$===']($case)) {
-            self.num_base = 16;
-            self.num_digits_s = p;}
-            else if ((473)['$===']($case)) {
-            self.num_base = 10;
-            self.num_digits_s = p;}
-            else if ((476)['$===']($case)) {
-            self.num_base = 8;
-            self.num_digits_s = p;}
-            else if ((470)['$===']($case)) {
-            self.num_base = 2;
-            self.num_digits_s = p;}
-            else if ((485)['$===']($case)) {
-            self.num_base = 10;
-            self.num_digits_s = self.ts;}
-            else if ((447)['$===']($case)) {
-            self.num_base = 8;
-            self.num_digits_s = self.ts;}
-            else if ((462)['$===']($case)) {
-            self.num_suffix_s = p;}
-            else if ((455)['$===']($case)) {
-            self.num_suffix_s = p;}
-            else if ((452)['$===']($case)) {
-            self.num_suffix_s = p;}
-            else if ((89)['$===']($case)) {
-            tm = p;}
-            else if ((7)['$===']($case)) {
-            self.te = $rb_plus(p, 1);}
-            else if ((113)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            current_literal.$flush_string();
-            current_literal.$extend_content();
-            self.$emit("tSTRING_DBEG", "\#{".$freeze());
-            if ($truthy(current_literal['$heredoc?']())) {
-              
-              
-              $writer = [self.herebody_s];
-              $send(current_literal, 'saved_herebody_s=', Opal.to_a($writer));
-              $writer[$rb_minus($writer["length"], 1)];;
-              self.herebody_s = nil;};
-            current_literal.$start_interp_brace();
-            self.command_start = true;
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((5)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            current_literal.$flush_string();
-            current_literal.$extend_content();
-            self.$emit("tSTRING_DVAR", nil, self.ts, $rb_plus(self.ts, 1));
-            p = self.ts;
-            
-            
-            $writer = [self.top, self.cs];
-            $send(self.stack, '[]=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];;
-            self.top = $rb_plus(self.top, 1);
-            self.cs = 347;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((109)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            if (self.te['$=='](pe)) {
-              self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))};
-            if ($truthy(current_literal['$heredoc?']())) {
-              
-              line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
-              if ($truthy(self['$version?'](18, 19, 20))) {
-                line = line.$gsub(/\r.*$/, "".$freeze())};
-              if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
-                
-                self.herebody_s = self.te;
-                p = $rb_minus(current_literal.$heredoc_e(), 1);
-                self.cs = self.$pop_literal();
-                
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;
-              } else {
-                
-                current_literal.$infer_indent_level(line);
-                self.herebody_s = self.te;
-              };
-            } else {
+          if ($neqeq(_lex_trans_actions['$[]'](_trans), 0)) {
+            if ($eqeqeq(29, ($ret_or_1 = _lex_trans_actions['$[]'](_trans)))) {
+              
+              self.newline_s = p;
+            } else if ($eqeqeq(117, $ret_or_1)) {
+              
+              self.escape_s = p;
+              self.escape = nil;
+            } else if ($eqeqeq(30, $ret_or_1)) {
               
-              if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
-                
-                self.cs = self.$pop_literal();
-                
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;};
               if ($truthy(self.herebody_s)) {
                 
-                p = $rb_minus(self.herebody_s, 1);
-                self.herebody_s = nil;};
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_4 = current_literal['$words?']()))) {
-              return self['$eof_codepoint?'](self.source_pts['$[]'](p))['$!']()
-            } else {
-              return $ret_or_4
-            }; return nil; })())) {
-              current_literal.$extend_space(self.ts, self.te)
-            } else {
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };
+            } else if ($eqeqeq(60, $ret_or_1)) {
               
-              current_literal.$extend_string(self.$tok(), self.ts, self.te);
-              current_literal.$flush_string();
-            };;}
-            else if ((108)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            string = self.$tok();
-            if ($truthy((function() {if ($truthy(($ret_or_5 = $rb_ge(self.version, 22)))) {
-              return self.cond['$active?']()['$!']()
-            } else {
-              return $ret_or_5
-            }; return nil; })())) {
-              lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))};
-            current_literal = self.$literal();
-            if ($truthy((function() {if ($truthy(($ret_or_6 = current_literal['$heredoc?']()['$!']()))) {
+              self.sharp_s = $rb_minus(p, 1);
+            } else if ($eqeqeq(64, $ret_or_1)) {
               
-              return (token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead));
-            } else {
-              return $ret_or_6
-            }; return nil; })())) {
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));
+            } else if ($eqeqeq(310, $ret_or_1)) {
               
-              if (token['$[]'](0)['$==']("tLABEL_END")) {
-                
-                p = $rb_plus(p, 1);
-                self.$pop_literal();
-                self.cs = 795;
-              } else {
-                self.cs = self.$pop_literal()
-              };
+              tm = p;
+            } else if ($eqeqeq(37, $ret_or_1)) {
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
-              current_literal.$extend_string(string, self.ts, self.te)
-            };;}
-            else if ((115)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            if ($truthy($rb_ge(self.version, 27))) {
-              self.$literal().$extend_string(self.$tok(), self.ts, self.te)
-            } else {
+              tm = p;
+            } else if ($eqeqeq(39, $ret_or_1)) {
               
-              message = (function() {if ($truthy(self.$tok()['$start_with?']("\#@@"))) {
-                return "cvar_name"
-              } else {
-                return "ivar_name"
-              }; return nil; })();
-              self.$diagnostic("error", message, $hash2(["name"], {"name": self.$tok($rb_plus(self.ts, 1), self.te)}), self.$range($rb_plus(self.ts, 1), self.te));
-            };;}
-            else if ((114)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            current_literal.$flush_string();
-            current_literal.$extend_content();
-            self.$emit("tSTRING_DVAR", nil, self.ts, $rb_plus(self.ts, 1));
-            p = self.ts;
-            
-            
-            $writer = [self.top, self.cs];
-            $send(self.stack, '[]=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];;
-            self.top = $rb_plus(self.top, 1);
-            self.cs = 347;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((111)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$literal().$extend_space(self.ts, self.te);;}
-            else if ((112)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            string = self.$tok();
-            if ($truthy((function() {if ($truthy(($ret_or_7 = $rb_ge(self.version, 22)))) {
-              return self.cond['$active?']()['$!']()
-            } else {
-              return $ret_or_7
-            }; return nil; })())) {
-              lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))};
-            current_literal = self.$literal();
-            if ($truthy((function() {if ($truthy(($ret_or_8 = current_literal['$heredoc?']()['$!']()))) {
+              tm = p;
+            } else if ($eqeqeq(41, $ret_or_1)) {
               
-              return (token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead));
-            } else {
-              return $ret_or_8
-            }; return nil; })())) {
+              tm = p;
+            } else if ($eqeqeq(71, $ret_or_1)) {
+              
+              heredoc_e = p;
+            } else if ($eqeqeq(349, $ret_or_1)) {
+              
+              tm = $rb_minus(p, 1);
+              diag_msg = "ivar_name";
+            } else if ($eqeqeq(352, $ret_or_1)) {
+              
+              tm = $rb_minus(p, 2);
+              diag_msg = "cvar_name";
+            } else if ($eqeqeq(360, $ret_or_1)) {
+              
+              self.escape = nil;
+            } else if ($eqeqeq(392, $ret_or_1)) {
+              
+              tm = p;
+            } else if ($eqeqeq(308, $ret_or_1)) {
+              
+              ident_tok = self.$tok();
+              ident_ts = self.ts;
+              ident_te = self.te;
+            } else if ($eqeqeq(479, $ret_or_1)) {
+              
+              self.num_base = 16;
+              self.num_digits_s = p;
+            } else if ($eqeqeq(473, $ret_or_1)) {
+              
+              self.num_base = 10;
+              self.num_digits_s = p;
+            } else if ($eqeqeq(476, $ret_or_1)) {
+              
+              self.num_base = 8;
+              self.num_digits_s = p;
+            } else if ($eqeqeq(470, $ret_or_1)) {
+              
+              self.num_base = 2;
+              self.num_digits_s = p;
+            } else if ($eqeqeq(485, $ret_or_1)) {
+              
+              self.num_base = 10;
+              self.num_digits_s = self.ts;
+            } else if ($eqeqeq(447, $ret_or_1)) {
+              
+              self.num_base = 8;
+              self.num_digits_s = self.ts;
+            } else if ($eqeqeq(462, $ret_or_1)) {
+              
+              self.num_suffix_s = p;
+            } else if ($eqeqeq(455, $ret_or_1)) {
+              
+              self.num_suffix_s = p;
+            } else if ($eqeqeq(452, $ret_or_1)) {
+              
+              self.num_suffix_s = p;
+            } else if ($eqeqeq(89, $ret_or_1)) {
               
-              if (token['$[]'](0)['$==']("tLABEL_END")) {
+              tm = p;
+            } else if ($eqeqeq(7, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+            } else if ($eqeqeq(113, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              current_literal = self.$literal();
+              current_literal.$flush_string();
+              current_literal.$extend_content();
+              self.$emit("tSTRING_DBEG", "\#{".$freeze());
+              if ($truthy(current_literal['$heredoc?']())) {
                 
-                p = $rb_plus(p, 1);
-                self.$pop_literal();
-                self.cs = 795;
-              } else {
-                self.cs = self.$pop_literal()
+                
+                $writer = [self.herebody_s];
+                $send(current_literal, 'saved_herebody_s=', $to_a($writer));
+                $writer[$rb_minus($writer["length"], 1)];;
+                self.herebody_s = nil;
               };
+              current_literal.$start_interp_brace();
+              self.command_start = true;
+              self.cs = 802;
               
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;
-            } else {
-              current_literal.$extend_string(string, self.ts, self.te)
-            };;}
-            else if ((6)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_9 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_9
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
-              } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_10 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_10
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_11 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_11
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_12 = (function() {if ($truthy(($ret_or_13 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_13
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_12
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_14 = self.escape))) {
-                return $ret_or_14
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;}
-            else if ((4)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            string = self.$tok();
-            if ($truthy((function() {if ($truthy(($ret_or_15 = $rb_ge(self.version, 22)))) {
-              return self.cond['$active?']()['$!']()
-            } else {
-              return $ret_or_15
-            }; return nil; })())) {
-              lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))};
-            current_literal = self.$literal();
-            if ($truthy((function() {if ($truthy(($ret_or_16 = current_literal['$heredoc?']()['$!']()))) {
-              
-              return (token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead));
-            } else {
-              return $ret_or_16
-            }; return nil; })())) {
+              continue;;;;
+            } else if ($eqeqeq(5, $ret_or_1)) {
               
-              if (token['$[]'](0)['$==']("tLABEL_END")) {
-                
-                p = $rb_plus(p, 1);
-                self.$pop_literal();
-                self.cs = 795;
-              } else {
-                self.cs = self.$pop_literal()
-              };
+              self.te = $rb_plus(p, 1);
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
-              current_literal.$extend_string(string, self.ts, self.te)
-            };;}
-            else if ((145)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            current_literal.$flush_string();
-            current_literal.$extend_content();
-            self.$emit("tSTRING_DBEG", "\#{".$freeze());
-            if ($truthy(current_literal['$heredoc?']())) {
+              current_literal = self.$literal();
+              current_literal.$flush_string();
+              current_literal.$extend_content();
+              self.$emit("tSTRING_DVAR", nil, self.ts, $rb_plus(self.ts, 1));
+              p = self.ts;
               
               
-              $writer = [self.herebody_s];
-              $send(current_literal, 'saved_herebody_s=', Opal.to_a($writer));
+              $writer = [self.top, self.cs];
+              $send(self.stack, '[]=', $to_a($writer));
               $writer[$rb_minus($writer["length"], 1)];;
-              self.herebody_s = nil;};
-            current_literal.$start_interp_brace();
-            self.command_start = true;
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((10)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            current_literal.$flush_string();
-            current_literal.$extend_content();
-            self.$emit("tSTRING_DVAR", nil, self.ts, $rb_plus(self.ts, 1));
-            p = self.ts;
-            
-            
-            $writer = [self.top, self.cs];
-            $send(self.stack, '[]=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];;
-            self.top = $rb_plus(self.top, 1);
-            self.cs = 347;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((142)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            if (self.te['$=='](pe)) {
-              self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))};
-            if ($truthy(current_literal['$heredoc?']())) {
-              
-              line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
-              if ($truthy(self['$version?'](18, 19, 20))) {
-                line = line.$gsub(/\r.*$/, "".$freeze())};
-              if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
-                
-                self.herebody_s = self.te;
-                p = $rb_minus(current_literal.$heredoc_e(), 1);
-                self.cs = self.$pop_literal();
+              self.top = $rb_plus(self.top, 1);
+              self.cs = 347;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(109, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              current_literal = self.$literal();
+              if ($eqeq(self.te, pe)) {
+                self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))
+              };
+              if ($truthy(current_literal['$heredoc?']())) {
                 
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;
+                line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  line = line.$gsub(/\r.*$/, "".$freeze())
+                };
+                if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+                  
+                  self.herebody_s = self.te;
+                  p = $rb_minus(current_literal.$heredoc_e(), 1);
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  current_literal.$infer_indent_level(line);
+                  self.herebody_s = self.te;
+                };
               } else {
                 
-                current_literal.$infer_indent_level(line);
-                self.herebody_s = self.te;
+                if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+                  
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+                if ($truthy(self.herebody_s)) {
+                  
+                  p = $rb_minus(self.herebody_s, 1);
+                  self.herebody_s = nil;
+                };
               };
-            } else {
+              if (($truthy(current_literal['$words?']()) && ($not(self['$eof_codepoint?'](self.source_pts['$[]'](p)))))) {
+                current_literal.$extend_space(self.ts, self.te)
+              } else {
+                
+                current_literal.$extend_string(self.$tok(), self.ts, self.te);
+                current_literal.$flush_string();
+              };;
+            } else if ($eqeqeq(108, $ret_or_1)) {
               
-              if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+              self.te = $rb_plus(p, 1);
+              
+              string = self.$tok();
+              if (($truthy($rb_ge(self.version, 22)) && ($not(self.cond['$active?']())))) {
+                lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))
+              };
+              current_literal = self.$literal();
+              if (($not(current_literal['$heredoc?']()) && ($truthy((token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead)))))) {
                 
-                self.cs = self.$pop_literal();
+                if ($eqeq(token['$[]'](0), "tLABEL_END")) {
+                  
+                  p = $rb_plus(p, 1);
+                  self.$pop_literal();
+                  self.cs = 795;
+                } else {
+                  self.cs = self.$pop_literal()
+                };
                 
                 p = $rb_plus(p, 1);
                 _goto_level = _out;
-                continue;;;};
-              if ($truthy(self.herebody_s)) {
+                continue;;;
+              } else {
+                current_literal.$extend_string(string, self.ts, self.te)
+              };;
+            } else if ($eqeqeq(115, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              if ($truthy($rb_ge(self.version, 27))) {
+                self.$literal().$extend_string(self.$tok(), self.ts, self.te)
+              } else {
                 
-                p = $rb_minus(self.herebody_s, 1);
-                self.herebody_s = nil;};
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_17 = current_literal['$words?']()))) {
-              return self['$eof_codepoint?'](self.source_pts['$[]'](p))['$!']()
-            } else {
-              return $ret_or_17
-            }; return nil; })())) {
-              current_literal.$extend_space(self.ts, self.te)
-            } else {
+                message = ($truthy(self.$tok()['$start_with?']("\#@@")) ? ("cvar_name") : ("ivar_name"));
+                self.$diagnostic("error", message, $hash2(["name"], {"name": self.$tok($rb_plus(self.ts, 1), self.te)}), self.$range($rb_plus(self.ts, 1), self.te));
+              };;
+            } else if ($eqeqeq(114, $ret_or_1)) {
               
-              current_literal.$extend_string(self.$tok(), self.ts, self.te);
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
               current_literal.$flush_string();
-            };;}
-            else if ((141)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            string = self.$tok();
-            if ($truthy((function() {if ($truthy(($ret_or_18 = $rb_ge(self.version, 22)))) {
-              return self.cond['$active?']()['$!']()
-            } else {
-              return $ret_or_18
-            }; return nil; })())) {
-              lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))};
-            current_literal = self.$literal();
-            if ($truthy((function() {if ($truthy(($ret_or_19 = current_literal['$heredoc?']()['$!']()))) {
+              current_literal.$extend_content();
+              self.$emit("tSTRING_DVAR", nil, self.ts, $rb_plus(self.ts, 1));
+              p = self.ts;
               
-              return (token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead));
-            } else {
-              return $ret_or_19
-            }; return nil; })())) {
               
-              if (token['$[]'](0)['$==']("tLABEL_END")) {
-                
-                p = $rb_plus(p, 1);
-                self.$pop_literal();
-                self.cs = 795;
-              } else {
-                self.cs = self.$pop_literal()
-              };
+              $writer = [self.top, self.cs];
+              $send(self.stack, '[]=', $to_a($writer));
+              $writer[$rb_minus($writer["length"], 1)];;
+              self.top = $rb_plus(self.top, 1);
+              self.cs = 347;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(111, $ret_or_1)) {
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
-              current_literal.$extend_string(string, self.ts, self.te)
-            };;}
-            else if ((147)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            if ($truthy($rb_ge(self.version, 27))) {
-              self.$literal().$extend_string(self.$tok(), self.ts, self.te)
-            } else {
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              message = (function() {if ($truthy(self.$tok()['$start_with?']("\#@@"))) {
-                return "cvar_name"
-              } else {
-                return "ivar_name"
-              }; return nil; })();
-              self.$diagnostic("error", message, $hash2(["name"], {"name": self.$tok($rb_plus(self.ts, 1), self.te)}), self.$range($rb_plus(self.ts, 1), self.te));
-            };;}
-            else if ((146)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            current_literal.$flush_string();
-            current_literal.$extend_content();
-            self.$emit("tSTRING_DVAR", nil, self.ts, $rb_plus(self.ts, 1));
-            p = self.ts;
-            
-            
-            $writer = [self.top, self.cs];
-            $send(self.stack, '[]=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];;
-            self.top = $rb_plus(self.top, 1);
-            self.cs = 347;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((144)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            string = self.$tok();
-            if ($truthy((function() {if ($truthy(($ret_or_20 = $rb_ge(self.version, 22)))) {
-              return self.cond['$active?']()['$!']()
-            } else {
-              return $ret_or_20
-            }; return nil; })())) {
-              lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))};
-            current_literal = self.$literal();
-            if ($truthy((function() {if ($truthy(($ret_or_21 = current_literal['$heredoc?']()['$!']()))) {
+              self.$literal().$extend_space(self.ts, self.te);;
+            } else if ($eqeqeq(112, $ret_or_1)) {
               
-              return (token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead));
-            } else {
-              return $ret_or_21
-            }; return nil; })())) {
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              if (token['$[]'](0)['$==']("tLABEL_END")) {
+              string = self.$tok();
+              if (($truthy($rb_ge(self.version, 22)) && ($not(self.cond['$active?']())))) {
+                lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))
+              };
+              current_literal = self.$literal();
+              if (($not(current_literal['$heredoc?']()) && ($truthy((token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead)))))) {
+                
+                if ($eqeq(token['$[]'](0), "tLABEL_END")) {
+                  
+                  p = $rb_plus(p, 1);
+                  self.$pop_literal();
+                  self.cs = 795;
+                } else {
+                  self.cs = self.$pop_literal()
+                };
                 
                 p = $rb_plus(p, 1);
-                self.$pop_literal();
-                self.cs = 795;
+                _goto_level = _out;
+                continue;;;
               } else {
-                self.cs = self.$pop_literal()
-              };
+                current_literal.$extend_string(string, self.ts, self.te)
+              };;
+            } else if ($eqeqeq(6, $ret_or_1)) {
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
-              current_literal.$extend_string(string, self.ts, self.te)
-            };;}
-            else if ((11)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_22 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_22
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
-              } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_23 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_23
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_24 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_24
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_25 = (function() {if ($truthy(($ret_or_26 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_26
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_25
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_27 = self.escape))) {
-                return $ret_or_27
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;}
-            else if ((9)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            string = self.$tok();
-            if ($truthy((function() {if ($truthy(($ret_or_28 = $rb_ge(self.version, 22)))) {
-              return self.cond['$active?']()['$!']()
-            } else {
-              return $ret_or_28
-            }; return nil; })())) {
-              lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))};
-            current_literal = self.$literal();
-            if ($truthy((function() {if ($truthy(($ret_or_29 = current_literal['$heredoc?']()['$!']()))) {
               
-              return (token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead));
-            } else {
-              return $ret_or_29
-            }; return nil; })())) {
+              p = $rb_minus(self.te, 1);;
               
-              if (token['$[]'](0)['$==']("tLABEL_END")) {
-                
-                p = $rb_plus(p, 1);
-                self.$pop_literal();
-                self.cs = 795;
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                self.cs = self.$pop_literal()
-              };
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;
+            } else if ($eqeqeq(4, $ret_or_1)) {
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
-              current_literal.$extend_string(string, self.ts, self.te)
-            };;}
-            else if ((173)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            if (self.te['$=='](pe)) {
-              self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))};
-            if ($truthy(current_literal['$heredoc?']())) {
               
-              line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
-              if ($truthy(self['$version?'](18, 19, 20))) {
-                line = line.$gsub(/\r.*$/, "".$freeze())};
-              if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+              p = $rb_minus(self.te, 1);;
+              
+              string = self.$tok();
+              if (($truthy($rb_ge(self.version, 22)) && ($not(self.cond['$active?']())))) {
+                lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))
+              };
+              current_literal = self.$literal();
+              if (($not(current_literal['$heredoc?']()) && ($truthy((token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead)))))) {
                 
-                self.herebody_s = self.te;
-                p = $rb_minus(current_literal.$heredoc_e(), 1);
-                self.cs = self.$pop_literal();
+                if ($eqeq(token['$[]'](0), "tLABEL_END")) {
+                  
+                  p = $rb_plus(p, 1);
+                  self.$pop_literal();
+                  self.cs = 795;
+                } else {
+                  self.cs = self.$pop_literal()
+                };
                 
                 p = $rb_plus(p, 1);
                 _goto_level = _out;
                 continue;;;
               } else {
-                
-                current_literal.$infer_indent_level(line);
-                self.herebody_s = self.te;
-              };
-            } else {
+                current_literal.$extend_string(string, self.ts, self.te)
+              };;
+            } else if ($eqeqeq(145, $ret_or_1)) {
               
-              if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
-                
-                self.cs = self.$pop_literal();
-                
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;};
-              if ($truthy(self.herebody_s)) {
-                
-                p = $rb_minus(self.herebody_s, 1);
-                self.herebody_s = nil;};
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_30 = current_literal['$words?']()))) {
-              return self['$eof_codepoint?'](self.source_pts['$[]'](p))['$!']()
-            } else {
-              return $ret_or_30
-            }; return nil; })())) {
-              current_literal.$extend_space(self.ts, self.te)
-            } else {
+              self.te = $rb_plus(p, 1);
               
-              current_literal.$extend_string(self.$tok(), self.ts, self.te);
+              current_literal = self.$literal();
               current_literal.$flush_string();
-            };;}
-            else if ((172)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            string = self.$tok();
-            if ($truthy((function() {if ($truthy(($ret_or_31 = $rb_ge(self.version, 22)))) {
-              return self.cond['$active?']()['$!']()
-            } else {
-              return $ret_or_31
-            }; return nil; })())) {
-              lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))};
-            current_literal = self.$literal();
-            if ($truthy((function() {if ($truthy(($ret_or_32 = current_literal['$heredoc?']()['$!']()))) {
-              
-              return (token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead));
-            } else {
-              return $ret_or_32
-            }; return nil; })())) {
-              
-              if (token['$[]'](0)['$==']("tLABEL_END")) {
+              current_literal.$extend_content();
+              self.$emit("tSTRING_DBEG", "\#{".$freeze());
+              if ($truthy(current_literal['$heredoc?']())) {
                 
-                p = $rb_plus(p, 1);
-                self.$pop_literal();
-                self.cs = 795;
-              } else {
-                self.cs = self.$pop_literal()
+                
+                $writer = [self.herebody_s];
+                $send(current_literal, 'saved_herebody_s=', $to_a($writer));
+                $writer[$rb_minus($writer["length"], 1)];;
+                self.herebody_s = nil;
               };
+              current_literal.$start_interp_brace();
+              self.command_start = true;
+              self.cs = 802;
               
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;
-            } else {
-              current_literal.$extend_string(string, self.ts, self.te)
-            };;}
-            else if ((175)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$literal().$extend_space(self.ts, self.te);;}
-            else if ((176)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            string = self.$tok();
-            if ($truthy((function() {if ($truthy(($ret_or_33 = $rb_ge(self.version, 22)))) {
-              return self.cond['$active?']()['$!']()
-            } else {
-              return $ret_or_33
-            }; return nil; })())) {
-              lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))};
-            current_literal = self.$literal();
-            if ($truthy((function() {if ($truthy(($ret_or_34 = current_literal['$heredoc?']()['$!']()))) {
+              continue;;;;
+            } else if ($eqeqeq(10, $ret_or_1)) {
               
-              return (token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead));
-            } else {
-              return $ret_or_34
-            }; return nil; })())) {
+              self.te = $rb_plus(p, 1);
+              
+              current_literal = self.$literal();
+              current_literal.$flush_string();
+              current_literal.$extend_content();
+              self.$emit("tSTRING_DVAR", nil, self.ts, $rb_plus(self.ts, 1));
+              p = self.ts;
+              
+              
+              $writer = [self.top, self.cs];
+              $send(self.stack, '[]=', $to_a($writer));
+              $writer[$rb_minus($writer["length"], 1)];;
+              self.top = $rb_plus(self.top, 1);
+              self.cs = 347;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(142, $ret_or_1)) {
               
-              if (token['$[]'](0)['$==']("tLABEL_END")) {
+              self.te = $rb_plus(p, 1);
+              
+              current_literal = self.$literal();
+              if ($eqeq(self.te, pe)) {
+                self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))
+              };
+              if ($truthy(current_literal['$heredoc?']())) {
                 
-                p = $rb_plus(p, 1);
-                self.$pop_literal();
-                self.cs = 795;
+                line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  line = line.$gsub(/\r.*$/, "".$freeze())
+                };
+                if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+                  
+                  self.herebody_s = self.te;
+                  p = $rb_minus(current_literal.$heredoc_e(), 1);
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  current_literal.$infer_indent_level(line);
+                  self.herebody_s = self.te;
+                };
               } else {
-                self.cs = self.$pop_literal()
+                
+                if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+                  
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+                if ($truthy(self.herebody_s)) {
+                  
+                  p = $rb_minus(self.herebody_s, 1);
+                  self.herebody_s = nil;
+                };
               };
+              if (($truthy(current_literal['$words?']()) && ($not(self['$eof_codepoint?'](self.source_pts['$[]'](p)))))) {
+                current_literal.$extend_space(self.ts, self.te)
+              } else {
+                
+                current_literal.$extend_string(self.$tok(), self.ts, self.te);
+                current_literal.$flush_string();
+              };;
+            } else if ($eqeqeq(141, $ret_or_1)) {
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
-              current_literal.$extend_string(string, self.ts, self.te)
-            };;}
-            else if ((179)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            if (self.te['$=='](pe)) {
-              self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))};
-            if ($truthy(current_literal['$heredoc?']())) {
+              self.te = $rb_plus(p, 1);
               
-              line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
-              if ($truthy(self['$version?'](18, 19, 20))) {
-                line = line.$gsub(/\r.*$/, "".$freeze())};
-              if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+              string = self.$tok();
+              if (($truthy($rb_ge(self.version, 22)) && ($not(self.cond['$active?']())))) {
+                lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))
+              };
+              current_literal = self.$literal();
+              if (($not(current_literal['$heredoc?']()) && ($truthy((token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead)))))) {
                 
-                self.herebody_s = self.te;
-                p = $rb_minus(current_literal.$heredoc_e(), 1);
-                self.cs = self.$pop_literal();
+                if ($eqeq(token['$[]'](0), "tLABEL_END")) {
+                  
+                  p = $rb_plus(p, 1);
+                  self.$pop_literal();
+                  self.cs = 795;
+                } else {
+                  self.cs = self.$pop_literal()
+                };
                 
                 p = $rb_plus(p, 1);
                 _goto_level = _out;
                 continue;;;
               } else {
+                current_literal.$extend_string(string, self.ts, self.te)
+              };;
+            } else if ($eqeqeq(147, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              if ($truthy($rb_ge(self.version, 27))) {
+                self.$literal().$extend_string(self.$tok(), self.ts, self.te)
+              } else {
                 
-                current_literal.$infer_indent_level(line);
-                self.herebody_s = self.te;
-              };
-            } else {
+                message = ($truthy(self.$tok()['$start_with?']("\#@@")) ? ("cvar_name") : ("ivar_name"));
+                self.$diagnostic("error", message, $hash2(["name"], {"name": self.$tok($rb_plus(self.ts, 1), self.te)}), self.$range($rb_plus(self.ts, 1), self.te));
+              };;
+            } else if ($eqeqeq(146, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              current_literal.$flush_string();
+              current_literal.$extend_content();
+              self.$emit("tSTRING_DVAR", nil, self.ts, $rb_plus(self.ts, 1));
+              p = self.ts;
               
-              if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+              
+              $writer = [self.top, self.cs];
+              $send(self.stack, '[]=', $to_a($writer));
+              $writer[$rb_minus($writer["length"], 1)];;
+              self.top = $rb_plus(self.top, 1);
+              self.cs = 347;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(144, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              string = self.$tok();
+              if (($truthy($rb_ge(self.version, 22)) && ($not(self.cond['$active?']())))) {
+                lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))
+              };
+              current_literal = self.$literal();
+              if (($not(current_literal['$heredoc?']()) && ($truthy((token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead)))))) {
                 
-                self.cs = self.$pop_literal();
+                if ($eqeq(token['$[]'](0), "tLABEL_END")) {
+                  
+                  p = $rb_plus(p, 1);
+                  self.$pop_literal();
+                  self.cs = 795;
+                } else {
+                  self.cs = self.$pop_literal()
+                };
                 
                 p = $rb_plus(p, 1);
                 _goto_level = _out;
-                continue;;;};
-              if ($truthy(self.herebody_s)) {
-                
-                p = $rb_minus(self.herebody_s, 1);
-                self.herebody_s = nil;};
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_35 = current_literal['$words?']()))) {
-              return self['$eof_codepoint?'](self.source_pts['$[]'](p))['$!']()
-            } else {
-              return $ret_or_35
-            }; return nil; })())) {
-              current_literal.$extend_space(self.ts, self.te)
-            } else {
+                continue;;;
+              } else {
+                current_literal.$extend_string(string, self.ts, self.te)
+              };;
+            } else if ($eqeqeq(11, $ret_or_1)) {
               
-              current_literal.$extend_string(self.$tok(), self.ts, self.te);
-              current_literal.$flush_string();
-            };;}
-            else if ((178)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            string = self.$tok();
-            if ($truthy((function() {if ($truthy(($ret_or_36 = $rb_ge(self.version, 22)))) {
-              return self.cond['$active?']()['$!']()
-            } else {
-              return $ret_or_36
-            }; return nil; })())) {
-              lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))};
-            current_literal = self.$literal();
-            if ($truthy((function() {if ($truthy(($ret_or_37 = current_literal['$heredoc?']()['$!']()))) {
               
-              return (token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead));
-            } else {
-              return $ret_or_37
-            }; return nil; })())) {
+              p = $rb_minus(self.te, 1);;
               
-              if (token['$[]'](0)['$==']("tLABEL_END")) {
-                
-                p = $rb_plus(p, 1);
-                self.$pop_literal();
-                self.cs = 795;
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                self.cs = self.$pop_literal()
-              };
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;
+            } else if ($eqeqeq(9, $ret_or_1)) {
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
-              current_literal.$extend_string(string, self.ts, self.te)
-            };;}
-            else if ((181)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            string = self.$tok();
-            if ($truthy((function() {if ($truthy(($ret_or_38 = $rb_ge(self.version, 22)))) {
-              return self.cond['$active?']()['$!']()
-            } else {
-              return $ret_or_38
-            }; return nil; })())) {
-              lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))};
-            current_literal = self.$literal();
-            if ($truthy((function() {if ($truthy(($ret_or_39 = current_literal['$heredoc?']()['$!']()))) {
               
-              return (token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead));
-            } else {
-              return $ret_or_39
-            }; return nil; })())) {
+              p = $rb_minus(self.te, 1);;
               
-              if (token['$[]'](0)['$==']("tLABEL_END")) {
+              string = self.$tok();
+              if (($truthy($rb_ge(self.version, 22)) && ($not(self.cond['$active?']())))) {
+                lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))
+              };
+              current_literal = self.$literal();
+              if (($not(current_literal['$heredoc?']()) && ($truthy((token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead)))))) {
+                
+                if ($eqeq(token['$[]'](0), "tLABEL_END")) {
+                  
+                  p = $rb_plus(p, 1);
+                  self.$pop_literal();
+                  self.cs = 795;
+                } else {
+                  self.cs = self.$pop_literal()
+                };
                 
                 p = $rb_plus(p, 1);
-                self.$pop_literal();
-                self.cs = 795;
+                _goto_level = _out;
+                continue;;;
               } else {
-                self.cs = self.$pop_literal()
-              };
-              
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
-              current_literal.$extend_string(string, self.ts, self.te)
-            };;}
-            else if ((188)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            current_literal.$flush_string();
-            current_literal.$extend_content();
-            self.$emit("tSTRING_DBEG", "\#{".$freeze());
-            if ($truthy(current_literal['$heredoc?']())) {
+                current_literal.$extend_string(string, self.ts, self.te)
+              };;
+            } else if ($eqeqeq(173, $ret_or_1)) {
               
+              self.te = $rb_plus(p, 1);
               
-              $writer = [self.herebody_s];
-              $send(current_literal, 'saved_herebody_s=', Opal.to_a($writer));
-              $writer[$rb_minus($writer["length"], 1)];;
-              self.herebody_s = nil;};
-            current_literal.$start_interp_brace();
-            self.command_start = true;
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((13)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            current_literal.$flush_string();
-            current_literal.$extend_content();
-            self.$emit("tSTRING_DVAR", nil, self.ts, $rb_plus(self.ts, 1));
-            p = self.ts;
-            
-            
-            $writer = [self.top, self.cs];
-            $send(self.stack, '[]=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];;
-            self.top = $rb_plus(self.top, 1);
-            self.cs = 347;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((185)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            if (self.te['$=='](pe)) {
-              self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))};
-            if ($truthy(current_literal['$heredoc?']())) {
-              
-              line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
-              if ($truthy(self['$version?'](18, 19, 20))) {
-                line = line.$gsub(/\r.*$/, "".$freeze())};
-              if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
-                
-                self.herebody_s = self.te;
-                p = $rb_minus(current_literal.$heredoc_e(), 1);
-                self.cs = self.$pop_literal();
+              current_literal = self.$literal();
+              if ($eqeq(self.te, pe)) {
+                self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))
+              };
+              if ($truthy(current_literal['$heredoc?']())) {
                 
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;
+                line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  line = line.$gsub(/\r.*$/, "".$freeze())
+                };
+                if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+                  
+                  self.herebody_s = self.te;
+                  p = $rb_minus(current_literal.$heredoc_e(), 1);
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  current_literal.$infer_indent_level(line);
+                  self.herebody_s = self.te;
+                };
               } else {
                 
-                current_literal.$infer_indent_level(line);
-                self.herebody_s = self.te;
+                if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+                  
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+                if ($truthy(self.herebody_s)) {
+                  
+                  p = $rb_minus(self.herebody_s, 1);
+                  self.herebody_s = nil;
+                };
               };
-            } else {
-              
-              if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
-                
-                self.cs = self.$pop_literal();
-                
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;};
-              if ($truthy(self.herebody_s)) {
+              if (($truthy(current_literal['$words?']()) && ($not(self['$eof_codepoint?'](self.source_pts['$[]'](p)))))) {
+                current_literal.$extend_space(self.ts, self.te)
+              } else {
                 
-                p = $rb_minus(self.herebody_s, 1);
-                self.herebody_s = nil;};
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_40 = current_literal['$words?']()))) {
-              return self['$eof_codepoint?'](self.source_pts['$[]'](p))['$!']()
-            } else {
-              return $ret_or_40
-            }; return nil; })())) {
-              current_literal.$extend_space(self.ts, self.te)
-            } else {
-              
-              current_literal.$extend_string(self.$tok(), self.ts, self.te);
-              current_literal.$flush_string();
-            };;}
-            else if ((184)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            string = self.$tok();
-            if ($truthy((function() {if ($truthy(($ret_or_41 = $rb_ge(self.version, 22)))) {
-              return self.cond['$active?']()['$!']()
-            } else {
-              return $ret_or_41
-            }; return nil; })())) {
-              lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))};
-            current_literal = self.$literal();
-            if ($truthy((function() {if ($truthy(($ret_or_42 = current_literal['$heredoc?']()['$!']()))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te);
+                current_literal.$flush_string();
+              };;
+            } else if ($eqeqeq(172, $ret_or_1)) {
               
-              return (token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead));
-            } else {
-              return $ret_or_42
-            }; return nil; })())) {
+              self.te = $rb_plus(p, 1);
               
-              if (token['$[]'](0)['$==']("tLABEL_END")) {
+              string = self.$tok();
+              if (($truthy($rb_ge(self.version, 22)) && ($not(self.cond['$active?']())))) {
+                lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))
+              };
+              current_literal = self.$literal();
+              if (($not(current_literal['$heredoc?']()) && ($truthy((token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead)))))) {
+                
+                if ($eqeq(token['$[]'](0), "tLABEL_END")) {
+                  
+                  p = $rb_plus(p, 1);
+                  self.$pop_literal();
+                  self.cs = 795;
+                } else {
+                  self.cs = self.$pop_literal()
+                };
                 
                 p = $rb_plus(p, 1);
-                self.$pop_literal();
-                self.cs = 795;
+                _goto_level = _out;
+                continue;;;
               } else {
-                self.cs = self.$pop_literal()
-              };
+                current_literal.$extend_string(string, self.ts, self.te)
+              };;
+            } else if ($eqeqeq(175, $ret_or_1)) {
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
-              current_literal.$extend_string(string, self.ts, self.te)
-            };;}
-            else if ((190)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            if ($truthy($rb_ge(self.version, 27))) {
-              self.$literal().$extend_string(self.$tok(), self.ts, self.te)
-            } else {
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              message = (function() {if ($truthy(self.$tok()['$start_with?']("\#@@"))) {
-                return "cvar_name"
-              } else {
-                return "ivar_name"
-              }; return nil; })();
-              self.$diagnostic("error", message, $hash2(["name"], {"name": self.$tok($rb_plus(self.ts, 1), self.te)}), self.$range($rb_plus(self.ts, 1), self.te));
-            };;}
-            else if ((189)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            current_literal.$flush_string();
-            current_literal.$extend_content();
-            self.$emit("tSTRING_DVAR", nil, self.ts, $rb_plus(self.ts, 1));
-            p = self.ts;
-            
-            
-            $writer = [self.top, self.cs];
-            $send(self.stack, '[]=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];;
-            self.top = $rb_plus(self.top, 1);
-            self.cs = 347;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((187)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            string = self.$tok();
-            if ($truthy((function() {if ($truthy(($ret_or_43 = $rb_ge(self.version, 22)))) {
-              return self.cond['$active?']()['$!']()
-            } else {
-              return $ret_or_43
-            }; return nil; })())) {
-              lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))};
-            current_literal = self.$literal();
-            if ($truthy((function() {if ($truthy(($ret_or_44 = current_literal['$heredoc?']()['$!']()))) {
+              self.$literal().$extend_space(self.ts, self.te);;
+            } else if ($eqeqeq(176, $ret_or_1)) {
               
-              return (token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead));
-            } else {
-              return $ret_or_44
-            }; return nil; })())) {
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              if (token['$[]'](0)['$==']("tLABEL_END")) {
+              string = self.$tok();
+              if (($truthy($rb_ge(self.version, 22)) && ($not(self.cond['$active?']())))) {
+                lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))
+              };
+              current_literal = self.$literal();
+              if (($not(current_literal['$heredoc?']()) && ($truthy((token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead)))))) {
+                
+                if ($eqeq(token['$[]'](0), "tLABEL_END")) {
+                  
+                  p = $rb_plus(p, 1);
+                  self.$pop_literal();
+                  self.cs = 795;
+                } else {
+                  self.cs = self.$pop_literal()
+                };
                 
                 p = $rb_plus(p, 1);
-                self.$pop_literal();
-                self.cs = 795;
+                _goto_level = _out;
+                continue;;;
               } else {
-                self.cs = self.$pop_literal()
-              };
-              
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
-              current_literal.$extend_string(string, self.ts, self.te)
-            };;}
-            else if ((12)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            string = self.$tok();
-            if ($truthy((function() {if ($truthy(($ret_or_45 = $rb_ge(self.version, 22)))) {
-              return self.cond['$active?']()['$!']()
-            } else {
-              return $ret_or_45
-            }; return nil; })())) {
-              lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))};
-            current_literal = self.$literal();
-            if ($truthy((function() {if ($truthy(($ret_or_46 = current_literal['$heredoc?']()['$!']()))) {
+                current_literal.$extend_string(string, self.ts, self.te)
+              };;
+            } else if ($eqeqeq(179, $ret_or_1)) {
               
-              return (token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead));
-            } else {
-              return $ret_or_46
-            }; return nil; })())) {
+              self.te = $rb_plus(p, 1);
               
-              if (token['$[]'](0)['$==']("tLABEL_END")) {
+              current_literal = self.$literal();
+              if ($eqeq(self.te, pe)) {
+                self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))
+              };
+              if ($truthy(current_literal['$heredoc?']())) {
                 
-                p = $rb_plus(p, 1);
-                self.$pop_literal();
-                self.cs = 795;
+                line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  line = line.$gsub(/\r.*$/, "".$freeze())
+                };
+                if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+                  
+                  self.herebody_s = self.te;
+                  p = $rb_minus(current_literal.$heredoc_e(), 1);
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  current_literal.$infer_indent_level(line);
+                  self.herebody_s = self.te;
+                };
               } else {
-                self.cs = self.$pop_literal()
+                
+                if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+                  
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+                if ($truthy(self.herebody_s)) {
+                  
+                  p = $rb_minus(self.herebody_s, 1);
+                  self.herebody_s = nil;
+                };
               };
+              if (($truthy(current_literal['$words?']()) && ($not(self['$eof_codepoint?'](self.source_pts['$[]'](p)))))) {
+                current_literal.$extend_space(self.ts, self.te)
+              } else {
+                
+                current_literal.$extend_string(self.$tok(), self.ts, self.te);
+                current_literal.$flush_string();
+              };;
+            } else if ($eqeqeq(178, $ret_or_1)) {
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
-              current_literal.$extend_string(string, self.ts, self.te)
-            };;}
-            else if ((192)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            if (self.te['$=='](pe)) {
-              self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))};
-            if ($truthy(current_literal['$heredoc?']())) {
+              self.te = $rb_plus(p, 1);
               
-              line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
-              if ($truthy(self['$version?'](18, 19, 20))) {
-                line = line.$gsub(/\r.*$/, "".$freeze())};
-              if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+              string = self.$tok();
+              if (($truthy($rb_ge(self.version, 22)) && ($not(self.cond['$active?']())))) {
+                lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))
+              };
+              current_literal = self.$literal();
+              if (($not(current_literal['$heredoc?']()) && ($truthy((token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead)))))) {
                 
-                self.herebody_s = self.te;
-                p = $rb_minus(current_literal.$heredoc_e(), 1);
-                self.cs = self.$pop_literal();
+                if ($eqeq(token['$[]'](0), "tLABEL_END")) {
+                  
+                  p = $rb_plus(p, 1);
+                  self.$pop_literal();
+                  self.cs = 795;
+                } else {
+                  self.cs = self.$pop_literal()
+                };
                 
                 p = $rb_plus(p, 1);
                 _goto_level = _out;
                 continue;;;
               } else {
-                
-                current_literal.$infer_indent_level(line);
-                self.herebody_s = self.te;
-              };
-            } else {
+                current_literal.$extend_string(string, self.ts, self.te)
+              };;
+            } else if ($eqeqeq(181, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+              string = self.$tok();
+              if (($truthy($rb_ge(self.version, 22)) && ($not(self.cond['$active?']())))) {
+                lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))
+              };
+              current_literal = self.$literal();
+              if (($not(current_literal['$heredoc?']()) && ($truthy((token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead)))))) {
                 
-                self.cs = self.$pop_literal();
+                if ($eqeq(token['$[]'](0), "tLABEL_END")) {
+                  
+                  p = $rb_plus(p, 1);
+                  self.$pop_literal();
+                  self.cs = 795;
+                } else {
+                  self.cs = self.$pop_literal()
+                };
                 
                 p = $rb_plus(p, 1);
                 _goto_level = _out;
-                continue;;;};
-              if ($truthy(self.herebody_s)) {
-                
-                p = $rb_minus(self.herebody_s, 1);
-                self.herebody_s = nil;};
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_47 = current_literal['$words?']()))) {
-              return self['$eof_codepoint?'](self.source_pts['$[]'](p))['$!']()
-            } else {
-              return $ret_or_47
-            }; return nil; })())) {
-              current_literal.$extend_space(self.ts, self.te)
-            } else {
-              
-              current_literal.$extend_string(self.$tok(), self.ts, self.te);
-              current_literal.$flush_string();
-            };;}
-            else if ((191)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            string = self.$tok();
-            if ($truthy((function() {if ($truthy(($ret_or_48 = $rb_ge(self.version, 22)))) {
-              return self.cond['$active?']()['$!']()
-            } else {
-              return $ret_or_48
-            }; return nil; })())) {
-              lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))};
-            current_literal = self.$literal();
-            if ($truthy((function() {if ($truthy(($ret_or_49 = current_literal['$heredoc?']()['$!']()))) {
+                continue;;;
+              } else {
+                current_literal.$extend_string(string, self.ts, self.te)
+              };;
+            } else if ($eqeqeq(188, $ret_or_1)) {
               
-              return (token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead));
-            } else {
-              return $ret_or_49
-            }; return nil; })())) {
+              self.te = $rb_plus(p, 1);
               
-              if (token['$[]'](0)['$==']("tLABEL_END")) {
+              current_literal = self.$literal();
+              current_literal.$flush_string();
+              current_literal.$extend_content();
+              self.$emit("tSTRING_DBEG", "\#{".$freeze());
+              if ($truthy(current_literal['$heredoc?']())) {
                 
-                p = $rb_plus(p, 1);
-                self.$pop_literal();
-                self.cs = 795;
-              } else {
-                self.cs = self.$pop_literal()
+                
+                $writer = [self.herebody_s];
+                $send(current_literal, 'saved_herebody_s=', $to_a($writer));
+                $writer[$rb_minus($writer["length"], 1)];;
+                self.herebody_s = nil;
               };
+              current_literal.$start_interp_brace();
+              self.command_start = true;
+              self.cs = 802;
               
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;
-            } else {
-              current_literal.$extend_string(string, self.ts, self.te)
-            };;}
-            else if ((199)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            current_literal.$flush_string();
-            current_literal.$extend_content();
-            self.$emit("tSTRING_DBEG", "\#{".$freeze());
-            if ($truthy(current_literal['$heredoc?']())) {
+              continue;;;;
+            } else if ($eqeqeq(13, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              current_literal = self.$literal();
+              current_literal.$flush_string();
+              current_literal.$extend_content();
+              self.$emit("tSTRING_DVAR", nil, self.ts, $rb_plus(self.ts, 1));
+              p = self.ts;
               
               
-              $writer = [self.herebody_s];
-              $send(current_literal, 'saved_herebody_s=', Opal.to_a($writer));
+              $writer = [self.top, self.cs];
+              $send(self.stack, '[]=', $to_a($writer));
               $writer[$rb_minus($writer["length"], 1)];;
-              self.herebody_s = nil;};
-            current_literal.$start_interp_brace();
-            self.command_start = true;
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((15)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            current_literal.$flush_string();
-            current_literal.$extend_content();
-            self.$emit("tSTRING_DVAR", nil, self.ts, $rb_plus(self.ts, 1));
-            p = self.ts;
-            
-            
-            $writer = [self.top, self.cs];
-            $send(self.stack, '[]=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];;
-            self.top = $rb_plus(self.top, 1);
-            self.cs = 347;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((195)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            if (self.te['$=='](pe)) {
-              self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))};
-            if ($truthy(current_literal['$heredoc?']())) {
-              
-              line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
-              if ($truthy(self['$version?'](18, 19, 20))) {
-                line = line.$gsub(/\r.*$/, "".$freeze())};
-              if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
-                
-                self.herebody_s = self.te;
-                p = $rb_minus(current_literal.$heredoc_e(), 1);
-                self.cs = self.$pop_literal();
+              self.top = $rb_plus(self.top, 1);
+              self.cs = 347;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(185, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              current_literal = self.$literal();
+              if ($eqeq(self.te, pe)) {
+                self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))
+              };
+              if ($truthy(current_literal['$heredoc?']())) {
                 
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;
+                line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  line = line.$gsub(/\r.*$/, "".$freeze())
+                };
+                if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+                  
+                  self.herebody_s = self.te;
+                  p = $rb_minus(current_literal.$heredoc_e(), 1);
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  current_literal.$infer_indent_level(line);
+                  self.herebody_s = self.te;
+                };
               } else {
                 
-                current_literal.$infer_indent_level(line);
-                self.herebody_s = self.te;
+                if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+                  
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+                if ($truthy(self.herebody_s)) {
+                  
+                  p = $rb_minus(self.herebody_s, 1);
+                  self.herebody_s = nil;
+                };
               };
-            } else {
+              if (($truthy(current_literal['$words?']()) && ($not(self['$eof_codepoint?'](self.source_pts['$[]'](p)))))) {
+                current_literal.$extend_space(self.ts, self.te)
+              } else {
+                
+                current_literal.$extend_string(self.$tok(), self.ts, self.te);
+                current_literal.$flush_string();
+              };;
+            } else if ($eqeqeq(184, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
               
-              if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+              string = self.$tok();
+              if (($truthy($rb_ge(self.version, 22)) && ($not(self.cond['$active?']())))) {
+                lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))
+              };
+              current_literal = self.$literal();
+              if (($not(current_literal['$heredoc?']()) && ($truthy((token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead)))))) {
                 
-                self.cs = self.$pop_literal();
+                if ($eqeq(token['$[]'](0), "tLABEL_END")) {
+                  
+                  p = $rb_plus(p, 1);
+                  self.$pop_literal();
+                  self.cs = 795;
+                } else {
+                  self.cs = self.$pop_literal()
+                };
                 
                 p = $rb_plus(p, 1);
                 _goto_level = _out;
-                continue;;;};
-              if ($truthy(self.herebody_s)) {
+                continue;;;
+              } else {
+                current_literal.$extend_string(string, self.ts, self.te)
+              };;
+            } else if ($eqeqeq(190, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              if ($truthy($rb_ge(self.version, 27))) {
+                self.$literal().$extend_string(self.$tok(), self.ts, self.te)
+              } else {
                 
-                p = $rb_minus(self.herebody_s, 1);
-                self.herebody_s = nil;};
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_50 = current_literal['$words?']()))) {
-              return self['$eof_codepoint?'](self.source_pts['$[]'](p))['$!']()
-            } else {
-              return $ret_or_50
-            }; return nil; })())) {
-              current_literal.$extend_space(self.ts, self.te)
-            } else {
+                message = ($truthy(self.$tok()['$start_with?']("\#@@")) ? ("cvar_name") : ("ivar_name"));
+                self.$diagnostic("error", message, $hash2(["name"], {"name": self.$tok($rb_plus(self.ts, 1), self.te)}), self.$range($rb_plus(self.ts, 1), self.te));
+              };;
+            } else if ($eqeqeq(189, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              current_literal.$extend_string(self.$tok(), self.ts, self.te);
+              current_literal = self.$literal();
               current_literal.$flush_string();
-            };;}
-            else if ((194)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            string = self.$tok();
-            if ($truthy((function() {if ($truthy(($ret_or_51 = $rb_ge(self.version, 22)))) {
-              return self.cond['$active?']()['$!']()
-            } else {
-              return $ret_or_51
-            }; return nil; })())) {
-              lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))};
-            current_literal = self.$literal();
-            if ($truthy((function() {if ($truthy(($ret_or_52 = current_literal['$heredoc?']()['$!']()))) {
+              current_literal.$extend_content();
+              self.$emit("tSTRING_DVAR", nil, self.ts, $rb_plus(self.ts, 1));
+              p = self.ts;
               
-              return (token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead));
-            } else {
-              return $ret_or_52
-            }; return nil; })())) {
               
-              if (token['$[]'](0)['$==']("tLABEL_END")) {
+              $writer = [self.top, self.cs];
+              $send(self.stack, '[]=', $to_a($writer));
+              $writer[$rb_minus($writer["length"], 1)];;
+              self.top = $rb_plus(self.top, 1);
+              self.cs = 347;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(187, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              string = self.$tok();
+              if (($truthy($rb_ge(self.version, 22)) && ($not(self.cond['$active?']())))) {
+                lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))
+              };
+              current_literal = self.$literal();
+              if (($not(current_literal['$heredoc?']()) && ($truthy((token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead)))))) {
+                
+                if ($eqeq(token['$[]'](0), "tLABEL_END")) {
+                  
+                  p = $rb_plus(p, 1);
+                  self.$pop_literal();
+                  self.cs = 795;
+                } else {
+                  self.cs = self.$pop_literal()
+                };
                 
                 p = $rb_plus(p, 1);
-                self.$pop_literal();
-                self.cs = 795;
+                _goto_level = _out;
+                continue;;;
               } else {
-                self.cs = self.$pop_literal()
-              };
-              
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
-              current_literal.$extend_string(string, self.ts, self.te)
-            };;}
-            else if ((201)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            if ($truthy($rb_ge(self.version, 27))) {
-              self.$literal().$extend_string(self.$tok(), self.ts, self.te)
-            } else {
+                current_literal.$extend_string(string, self.ts, self.te)
+              };;
+            } else if ($eqeqeq(12, $ret_or_1)) {
               
-              message = (function() {if ($truthy(self.$tok()['$start_with?']("\#@@"))) {
-                return "cvar_name"
-              } else {
-                return "ivar_name"
-              }; return nil; })();
-              self.$diagnostic("error", message, $hash2(["name"], {"name": self.$tok($rb_plus(self.ts, 1), self.te)}), self.$range($rb_plus(self.ts, 1), self.te));
-            };;}
-            else if ((200)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            current_literal.$flush_string();
-            current_literal.$extend_content();
-            self.$emit("tSTRING_DVAR", nil, self.ts, $rb_plus(self.ts, 1));
-            p = self.ts;
-            
-            
-            $writer = [self.top, self.cs];
-            $send(self.stack, '[]=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];;
-            self.top = $rb_plus(self.top, 1);
-            self.cs = 347;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((197)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$literal().$extend_space(self.ts, self.te);;}
-            else if ((198)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            string = self.$tok();
-            if ($truthy((function() {if ($truthy(($ret_or_53 = $rb_ge(self.version, 22)))) {
-              return self.cond['$active?']()['$!']()
-            } else {
-              return $ret_or_53
-            }; return nil; })())) {
-              lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))};
-            current_literal = self.$literal();
-            if ($truthy((function() {if ($truthy(($ret_or_54 = current_literal['$heredoc?']()['$!']()))) {
               
-              return (token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead));
-            } else {
-              return $ret_or_54
-            }; return nil; })())) {
+              p = $rb_minus(self.te, 1);;
               
-              if (token['$[]'](0)['$==']("tLABEL_END")) {
+              string = self.$tok();
+              if (($truthy($rb_ge(self.version, 22)) && ($not(self.cond['$active?']())))) {
+                lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))
+              };
+              current_literal = self.$literal();
+              if (($not(current_literal['$heredoc?']()) && ($truthy((token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead)))))) {
+                
+                if ($eqeq(token['$[]'](0), "tLABEL_END")) {
+                  
+                  p = $rb_plus(p, 1);
+                  self.$pop_literal();
+                  self.cs = 795;
+                } else {
+                  self.cs = self.$pop_literal()
+                };
                 
                 p = $rb_plus(p, 1);
-                self.$pop_literal();
-                self.cs = 795;
+                _goto_level = _out;
+                continue;;;
               } else {
-                self.cs = self.$pop_literal()
-              };
-              
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
-              current_literal.$extend_string(string, self.ts, self.te)
-            };;}
-            else if ((14)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            string = self.$tok();
-            if ($truthy((function() {if ($truthy(($ret_or_55 = $rb_ge(self.version, 22)))) {
-              return self.cond['$active?']()['$!']()
-            } else {
-              return $ret_or_55
-            }; return nil; })())) {
-              lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))};
-            current_literal = self.$literal();
-            if ($truthy((function() {if ($truthy(($ret_or_56 = current_literal['$heredoc?']()['$!']()))) {
+                current_literal.$extend_string(string, self.ts, self.te)
+              };;
+            } else if ($eqeqeq(192, $ret_or_1)) {
               
-              return (token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead));
-            } else {
-              return $ret_or_56
-            }; return nil; })())) {
+              self.te = $rb_plus(p, 1);
               
-              if (token['$[]'](0)['$==']("tLABEL_END")) {
+              current_literal = self.$literal();
+              if ($eqeq(self.te, pe)) {
+                self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))
+              };
+              if ($truthy(current_literal['$heredoc?']())) {
                 
-                p = $rb_plus(p, 1);
-                self.$pop_literal();
-                self.cs = 795;
+                line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  line = line.$gsub(/\r.*$/, "".$freeze())
+                };
+                if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+                  
+                  self.herebody_s = self.te;
+                  p = $rb_minus(current_literal.$heredoc_e(), 1);
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  current_literal.$infer_indent_level(line);
+                  self.herebody_s = self.te;
+                };
               } else {
-                self.cs = self.$pop_literal()
+                
+                if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+                  
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+                if ($truthy(self.herebody_s)) {
+                  
+                  p = $rb_minus(self.herebody_s, 1);
+                  self.herebody_s = nil;
+                };
               };
+              if (($truthy(current_literal['$words?']()) && ($not(self['$eof_codepoint?'](self.source_pts['$[]'](p)))))) {
+                current_literal.$extend_space(self.ts, self.te)
+              } else {
+                
+                current_literal.$extend_string(self.$tok(), self.ts, self.te);
+                current_literal.$flush_string();
+              };;
+            } else if ($eqeqeq(191, $ret_or_1)) {
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
-              current_literal.$extend_string(string, self.ts, self.te)
-            };;}
-            else if ((203)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            if (self.te['$=='](pe)) {
-              self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))};
-            if ($truthy(current_literal['$heredoc?']())) {
+              self.te = $rb_plus(p, 1);
               
-              line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
-              if ($truthy(self['$version?'](18, 19, 20))) {
-                line = line.$gsub(/\r.*$/, "".$freeze())};
-              if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+              string = self.$tok();
+              if (($truthy($rb_ge(self.version, 22)) && ($not(self.cond['$active?']())))) {
+                lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))
+              };
+              current_literal = self.$literal();
+              if (($not(current_literal['$heredoc?']()) && ($truthy((token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead)))))) {
                 
-                self.herebody_s = self.te;
-                p = $rb_minus(current_literal.$heredoc_e(), 1);
-                self.cs = self.$pop_literal();
+                if ($eqeq(token['$[]'](0), "tLABEL_END")) {
+                  
+                  p = $rb_plus(p, 1);
+                  self.$pop_literal();
+                  self.cs = 795;
+                } else {
+                  self.cs = self.$pop_literal()
+                };
                 
                 p = $rb_plus(p, 1);
                 _goto_level = _out;
                 continue;;;
               } else {
-                
-                current_literal.$infer_indent_level(line);
-                self.herebody_s = self.te;
+                current_literal.$extend_string(string, self.ts, self.te)
+              };;
+            } else if ($eqeqeq(199, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              current_literal = self.$literal();
+              current_literal.$flush_string();
+              current_literal.$extend_content();
+              self.$emit("tSTRING_DBEG", "\#{".$freeze());
+              if ($truthy(current_literal['$heredoc?']())) {
+                
+                
+                $writer = [self.herebody_s];
+                $send(current_literal, 'saved_herebody_s=', $to_a($writer));
+                $writer[$rb_minus($writer["length"], 1)];;
+                self.herebody_s = nil;
               };
-            } else {
+              current_literal.$start_interp_brace();
+              self.command_start = true;
+              self.cs = 802;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(15, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              current_literal = self.$literal();
+              current_literal.$flush_string();
+              current_literal.$extend_content();
+              self.$emit("tSTRING_DVAR", nil, self.ts, $rb_plus(self.ts, 1));
+              p = self.ts;
+              
+              
+              $writer = [self.top, self.cs];
+              $send(self.stack, '[]=', $to_a($writer));
+              $writer[$rb_minus($writer["length"], 1)];;
+              self.top = $rb_plus(self.top, 1);
+              self.cs = 347;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(195, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              current_literal = self.$literal();
+              if ($eqeq(self.te, pe)) {
+                self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))
+              };
+              if ($truthy(current_literal['$heredoc?']())) {
+                
+                line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  line = line.$gsub(/\r.*$/, "".$freeze())
+                };
+                if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+                  
+                  self.herebody_s = self.te;
+                  p = $rb_minus(current_literal.$heredoc_e(), 1);
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  current_literal.$infer_indent_level(line);
+                  self.herebody_s = self.te;
+                };
+              } else {
+                
+                if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+                  
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+                if ($truthy(self.herebody_s)) {
+                  
+                  p = $rb_minus(self.herebody_s, 1);
+                  self.herebody_s = nil;
+                };
+              };
+              if (($truthy(current_literal['$words?']()) && ($not(self['$eof_codepoint?'](self.source_pts['$[]'](p)))))) {
+                current_literal.$extend_space(self.ts, self.te)
+              } else {
+                
+                current_literal.$extend_string(self.$tok(), self.ts, self.te);
+                current_literal.$flush_string();
+              };;
+            } else if ($eqeqeq(194, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
               
-              if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+              string = self.$tok();
+              if (($truthy($rb_ge(self.version, 22)) && ($not(self.cond['$active?']())))) {
+                lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))
+              };
+              current_literal = self.$literal();
+              if (($not(current_literal['$heredoc?']()) && ($truthy((token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead)))))) {
                 
-                self.cs = self.$pop_literal();
+                if ($eqeq(token['$[]'](0), "tLABEL_END")) {
+                  
+                  p = $rb_plus(p, 1);
+                  self.$pop_literal();
+                  self.cs = 795;
+                } else {
+                  self.cs = self.$pop_literal()
+                };
                 
                 p = $rb_plus(p, 1);
                 _goto_level = _out;
-                continue;;;};
-              if ($truthy(self.herebody_s)) {
+                continue;;;
+              } else {
+                current_literal.$extend_string(string, self.ts, self.te)
+              };;
+            } else if ($eqeqeq(201, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              if ($truthy($rb_ge(self.version, 27))) {
+                self.$literal().$extend_string(self.$tok(), self.ts, self.te)
+              } else {
                 
-                p = $rb_minus(self.herebody_s, 1);
-                self.herebody_s = nil;};
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_57 = current_literal['$words?']()))) {
-              return self['$eof_codepoint?'](self.source_pts['$[]'](p))['$!']()
-            } else {
-              return $ret_or_57
-            }; return nil; })())) {
-              current_literal.$extend_space(self.ts, self.te)
-            } else {
+                message = ($truthy(self.$tok()['$start_with?']("\#@@")) ? ("cvar_name") : ("ivar_name"));
+                self.$diagnostic("error", message, $hash2(["name"], {"name": self.$tok($rb_plus(self.ts, 1), self.te)}), self.$range($rb_plus(self.ts, 1), self.te));
+              };;
+            } else if ($eqeqeq(200, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              current_literal.$extend_string(self.$tok(), self.ts, self.te);
+              current_literal = self.$literal();
               current_literal.$flush_string();
-            };;}
-            else if ((202)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            string = self.$tok();
-            if ($truthy((function() {if ($truthy(($ret_or_58 = $rb_ge(self.version, 22)))) {
-              return self.cond['$active?']()['$!']()
-            } else {
-              return $ret_or_58
-            }; return nil; })())) {
-              lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))};
-            current_literal = self.$literal();
-            if ($truthy((function() {if ($truthy(($ret_or_59 = current_literal['$heredoc?']()['$!']()))) {
+              current_literal.$extend_content();
+              self.$emit("tSTRING_DVAR", nil, self.ts, $rb_plus(self.ts, 1));
+              p = self.ts;
               
-              return (token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead));
-            } else {
-              return $ret_or_59
-            }; return nil; })())) {
               
-              if (token['$[]'](0)['$==']("tLABEL_END")) {
+              $writer = [self.top, self.cs];
+              $send(self.stack, '[]=', $to_a($writer));
+              $writer[$rb_minus($writer["length"], 1)];;
+              self.top = $rb_plus(self.top, 1);
+              self.cs = 347;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(197, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$literal().$extend_space(self.ts, self.te);;
+            } else if ($eqeqeq(198, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              string = self.$tok();
+              if (($truthy($rb_ge(self.version, 22)) && ($not(self.cond['$active?']())))) {
+                lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))
+              };
+              current_literal = self.$literal();
+              if (($not(current_literal['$heredoc?']()) && ($truthy((token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead)))))) {
+                
+                if ($eqeq(token['$[]'](0), "tLABEL_END")) {
+                  
+                  p = $rb_plus(p, 1);
+                  self.$pop_literal();
+                  self.cs = 795;
+                } else {
+                  self.cs = self.$pop_literal()
+                };
                 
                 p = $rb_plus(p, 1);
-                self.$pop_literal();
-                self.cs = 795;
+                _goto_level = _out;
+                continue;;;
               } else {
-                self.cs = self.$pop_literal()
+                current_literal.$extend_string(string, self.ts, self.te)
+              };;
+            } else if ($eqeqeq(14, $ret_or_1)) {
+              
+              
+              p = $rb_minus(self.te, 1);;
+              
+              string = self.$tok();
+              if (($truthy($rb_ge(self.version, 22)) && ($not(self.cond['$active?']())))) {
+                lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))
               };
+              current_literal = self.$literal();
+              if (($not(current_literal['$heredoc?']()) && ($truthy((token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead)))))) {
+                
+                if ($eqeq(token['$[]'](0), "tLABEL_END")) {
+                  
+                  p = $rb_plus(p, 1);
+                  self.$pop_literal();
+                  self.cs = 795;
+                } else {
+                  self.cs = self.$pop_literal()
+                };
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else {
+                current_literal.$extend_string(string, self.ts, self.te)
+              };;
+            } else if ($eqeqeq(203, $ret_or_1)) {
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
-              current_literal.$extend_string(string, self.ts, self.te)
-            };;}
-            else if ((205)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$literal().$extend_space(self.ts, self.te);;}
-            else if ((206)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit("tREGEXP_OPT", self.$tok(self.ts, $rb_minus(self.te, 1)), self.ts, $rb_minus(self.te, 1));
-            p = $rb_minus(p, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((207)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            unknown_options = self.$tok().$scan(/[^imxouesn]/);
-            if ($truthy(unknown_options['$any?']())) {
-              self.$diagnostic("error", "regexp_options", $hash2(["options"], {"options": unknown_options.$join()}))};
-            self.$emit("tREGEXP_OPT");
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((16)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            if ($truthy(self.$tok()['$=~'](/^\$([1-9][0-9]*)$/))) {
-              self.$emit("tNTH_REF", self.$tok($rb_plus(self.ts, 1)).$to_i())
-            } else if ($truthy(self.$tok()['$=~'](/^\$([&`'+])$/))) {
-              self.$emit("tBACK_REF")
-            } else {
-              self.$emit("tGVAR")
-            };
-            self.cs = self.$stack_pop();
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((208)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            if ($truthy(self.$tok()['$=~'](/^\$([1-9][0-9]*)$/))) {
-              self.$emit("tNTH_REF", self.$tok($rb_plus(self.ts, 1)).$to_i())
-            } else if ($truthy(self.$tok()['$=~'](/^\$([&`'+])$/))) {
-              self.$emit("tBACK_REF")
-            } else {
-              self.$emit("tGVAR")
-            };
-            self.cs = self.$stack_pop();
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((210)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            if ($truthy(self.$tok()['$=~'](/^@@[0-9]/))) {
-              self.$diagnostic("error", "cvar_name", $hash2(["name"], {"name": self.$tok()}))};
-            self.$emit("tCVAR");
-            self.cs = self.$stack_pop();
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((209)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            if ($truthy(self.$tok()['$=~'](/^@[0-9]/))) {
-              self.$diagnostic("error", "ivar_name", $hash2(["name"], {"name": self.$tok()}))};
-            self.$emit("tIVAR");
-            self.cs = self.$stack_pop();
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((231)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit_table($$($nesting, 'KEYWORDS_BEGIN'));
-            self.cs = 465;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((217)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit("tIDENTIFIER");
-            self.cs = 465;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((18)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            self.cs = 810;
-            
-            
-            $writer = [self.top, self.cs];
-            $send(self.stack, '[]=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];;
-            self.top = $rb_plus(self.top, 1);
-            self.cs = 347;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((214)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            self.cs = 465;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((226)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            p = $rb_minus(p, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((20)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            if ($truthy(self['$version?'](23))) {
+              self.te = $rb_plus(p, 1);
               
-              $b = [self.$tok()['$[]']($range(0, -2, false)), self.$tok()['$[]'](-1).$chr()], (type = $b[0]), (delimiter = $b[1]), $b;
+              current_literal = self.$literal();
+              if ($eqeq(self.te, pe)) {
+                self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))
+              };
+              if ($truthy(current_literal['$heredoc?']())) {
+                
+                line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  line = line.$gsub(/\r.*$/, "".$freeze())
+                };
+                if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+                  
+                  self.herebody_s = self.te;
+                  p = $rb_minus(current_literal.$heredoc_e(), 1);
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  current_literal.$infer_indent_level(line);
+                  self.herebody_s = self.te;
+                };
+              } else {
+                
+                if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+                  
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+                if ($truthy(self.herebody_s)) {
+                  
+                  p = $rb_minus(self.herebody_s, 1);
+                  self.herebody_s = nil;
+                };
+              };
+              if (($truthy(current_literal['$words?']()) && ($not(self['$eof_codepoint?'](self.source_pts['$[]'](p)))))) {
+                current_literal.$extend_space(self.ts, self.te)
+              } else {
+                
+                current_literal.$extend_string(self.$tok(), self.ts, self.te);
+                current_literal.$flush_string();
+              };;
+            } else if ($eqeqeq(202, $ret_or_1)) {
               
-              self.cs = self.$push_literal(type, delimiter, self.ts);
-              _goto_level = _again;
-              continue;;;
-            } else {
+              self.te = $rb_plus(p, 1);
               
-              p = $rb_minus(self.ts, 1);
+              string = self.$tok();
+              if (($truthy($rb_ge(self.version, 22)) && ($not(self.cond['$active?']())))) {
+                lookahead = self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te, 2), true))
+              };
+              current_literal = self.$literal();
+              if (($not(current_literal['$heredoc?']()) && ($truthy((token = current_literal.$nest_and_try_closing(string, self.ts, self.te, lookahead)))))) {
+                
+                if ($eqeq(token['$[]'](0), "tLABEL_END")) {
+                  
+                  p = $rb_plus(p, 1);
+                  self.$pop_literal();
+                  self.cs = 795;
+                } else {
+                  self.cs = self.$pop_literal()
+                };
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else {
+                current_literal.$extend_string(string, self.ts, self.te)
+              };;
+            } else if ($eqeqeq(205, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$literal().$extend_space(self.ts, self.te);;
+            } else if ($eqeqeq(206, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit("tREGEXP_OPT", self.$tok(self.ts, $rb_minus(self.te, 1)), self.ts, $rb_minus(self.te, 1));
+              p = $rb_minus(p, 1);
               
               self.cs = 810;
               _goto_level = _again;
-              continue;;;
-            };;}
-            else if ((213)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((212)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((230)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit_table($$($nesting, 'KEYWORDS_BEGIN'));
-            self.cs = 465;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((227)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tCONSTANT");
-            self.cs = 465;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((229)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tIDENTIFIER");
-            self.cs = 465;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((224)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            self.cs = 810;
-            
-            
-            $writer = [self.top, self.cs];
-            $send(self.stack, '[]=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];;
-            self.top = $rb_plus(self.top, 1);
-            self.cs = 347;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((220)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            self.cs = 465;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((225)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((218)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);}
-            else if ((223)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((19)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            self.cs = 465;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((17)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((216)['$===']($case)) {
-            $case = self.act;
-            if ((43)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'KEYWORDS_BEGIN'));
-            self.cs = 465;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((44)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit("tCONSTANT");
-            self.cs = 465;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((45)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit("tIDENTIFIER");
-            self.cs = 465;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;};}
-            else if ((22)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit("tLABEL", self.$tok(self.ts, $rb_minus(self.te, 2)), self.ts, $rb_minus(self.te, 1));
-            p = $rb_minus(p, 1);
-            self.cs = 795;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((23)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            if ($truthy((function() {if ($truthy(($ret_or_60 = $rb_ge(self.version, 31)))) {
-              return self.context.$in_argdef()
-            } else {
-              return $ret_or_60
-            }; return nil; })())) {
+              continue;;;;
+            } else if ($eqeqeq(207, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              self.$emit("tBDOT3", "...".$freeze());
+              unknown_options = self.$tok().$scan(/[^imxouesn]/);
+              if ($truthy(unknown_options['$any?']())) {
+                self.$diagnostic("error", "regexp_options", $hash2(["options"], {"options": unknown_options.$join()}))
+              };
+              self.$emit("tREGEXP_OPT");
               self.cs = 810;
               
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;
-            } else {
+              continue;;;;
+            } else if ($eqeqeq(16, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              if ($truthy(self.$tok()['$=~'](/^\$([1-9][0-9]*)$/))) {
+                self.$emit("tNTH_REF", self.$tok($rb_plus(self.ts, 1)).$to_i())
+              } else if ($truthy(self.$tok()['$=~'](/^\$([&`'+])$/))) {
+                self.$emit("tBACK_REF")
+              } else {
+                self.$emit("tGVAR")
+              };
+              self.cs = self.$stack_pop();
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(208, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              if ($truthy(self.$tok()['$=~'](/^\$([1-9][0-9]*)$/))) {
+                self.$emit("tNTH_REF", self.$tok($rb_plus(self.ts, 1)).$to_i())
+              } else if ($truthy(self.$tok()['$=~'](/^\$([&`'+])$/))) {
+                self.$emit("tBACK_REF")
+              } else {
+                self.$emit("tGVAR")
+              };
+              self.cs = self.$stack_pop();
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(210, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              if ($truthy(self.$tok()['$=~'](/^@@[0-9]/))) {
+                self.$diagnostic("error", "cvar_name", $hash2(["name"], {"name": self.$tok()}))
+              };
+              self.$emit("tCVAR");
+              self.cs = self.$stack_pop();
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(209, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              if ($truthy(self.$tok()['$=~'](/^@[0-9]/))) {
+                self.$diagnostic("error", "ivar_name", $hash2(["name"], {"name": self.$tok()}))
+              };
+              self.$emit("tIVAR");
+              self.cs = self.$stack_pop();
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(231, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
               
-              p = $rb_minus(p, 3);
+              self.$emit_table($$('KEYWORDS_BEGIN'));
+              self.cs = 465;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(217, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit("tIDENTIFIER");
+              self.cs = 465;
               
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(18, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
               self.cs = 810;
+              
+              
+              $writer = [self.top, self.cs];
+              $send(self.stack, '[]=', $to_a($writer));
+              $writer[$rb_minus($writer["length"], 1)];;
+              self.top = $rb_plus(self.top, 1);
+              self.cs = 347;
               _goto_level = _again;
-              continue;;;
-            };;}
-            else if ((233)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((232)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((235)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);}
-            else if ((234)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((21)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((241)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            self.cs = 494;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((240)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((239)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((251)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tCONSTANT");
-            self.cs = self.$arg_or_cmdarg(cmd_state);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((242)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tIDENTIFIER");
-            self.cs = self.$arg_or_cmdarg(cmd_state);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((247)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            self.cs = 494;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((245)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);}
-            else if ((250)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((274)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((257)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            if (self.$tok(tm, $rb_plus(tm, 1))['$==']("/".$freeze())) {
-              if ($truthy($rb_lt(self.version, 30))) {
-                self.$diagnostic("warning", "ambiguous_literal", nil, self.$range(tm, $rb_plus(tm, 1)))
-              } else {
-                self.$diagnostic("warning", "ambiguous_regexp", nil, self.$range(tm, $rb_plus(tm, 1)))
-              }};
-            p = $rb_minus(tm, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((263)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            p = $rb_minus(p, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((25)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((265)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(tm, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((40)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((252)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((253)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((264)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((260)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$diagnostic("warning", "ambiguous_prefix", $hash2(["prefix"], {"prefix": self.$tok(tm, self.te)}), self.$range(tm, self.te));
-            p = $rb_minus(tm, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((262)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((256)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((255)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);}
-            else if ((273)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((26)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;}
-            else if ((42)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((24)['$===']($case)) {
-            $case = self.act;
-            if ((72)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            if (self.$tok(tm, $rb_plus(tm, 1))['$==']("/".$freeze())) {
-              if ($truthy($rb_lt(self.version, 30))) {
-                self.$diagnostic("warning", "ambiguous_literal", nil, self.$range(tm, $rb_plus(tm, 1)))
-              } else {
-                self.$diagnostic("warning", "ambiguous_regexp", nil, self.$range(tm, $rb_plus(tm, 1)))
-              }};
-            p = $rb_minus(tm, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;}
-            else if ((73)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$diagnostic("warning", "ambiguous_prefix", $hash2(["prefix"], {"prefix": self.$tok(tm, self.te)}), self.$range(tm, self.te));
-            p = $rb_minus(tm, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;}
-            else if ((78)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;}
-            else {
-            
-            p = $rb_minus(self.te, 1);;};}
-            else if ((44)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 494;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((278)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((279)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 494;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((45)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 494;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((43)['$===']($case)) {
-            $case = self.act;
-            if ((85)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            if ($truthy(self.cond['$active?']())) {
-              self.$emit("kDO_COND", "do".$freeze(), $rb_minus(self.te, 2), self.te)
-            } else {
-              self.$emit("kDO", "do".$freeze(), $rb_minus(self.te, 2), self.te)
-            };
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((86)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 494;
-            _goto_level = _again;
-            continue;;;};}
-            else if ((289)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit_do(true);
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((282)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((283)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((284)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);}
-            else if ((287)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((293)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((292)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((301)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((295)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);}
-            else if ((299)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((294)['$===']($case)) {
-            $case = self.act;
-            if ((93)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'KEYWORDS'));
-            self.cs = 563;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((94)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;};}
-            else if ((57)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit("tUNARY_NUM", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
-            p = $rb_minus(p, 1);
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((334)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            type = (delimiter = self.$tok()['$[]'](0).$chr());
-            p = $rb_minus(p, 1);
-            
-            self.cs = self.$push_literal(type, delimiter, self.ts);
-            _goto_level = _again;
-            continue;;;;}
-            else if ((326)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            $b = [self.source_buffer.$slice(self.ts).$chr(), self.$tok()['$[]'](-1).$chr()], (type = $b[0]), (delimiter = $b[1]), $b;
-            
-            self.cs = self.$push_literal(type, delimiter, self.ts);
-            _goto_level = _again;
-            continue;;;;}
-            else if ((55)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            $b = [self.$tok()['$[]']($range(0, -2, false)), self.$tok()['$[]'](-1).$chr()], (type = $b[0]), (delimiter = $b[1]), $b;
-            
-            self.cs = self.$push_literal(type, delimiter, self.ts);
-            _goto_level = _again;
-            continue;;;;}
-            else if ((347)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            p = $rb_minus(p, 1);
-            self.$emit("tSYMBEG", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
-            
-            self.cs = 352;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((335)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            $b = [self.$tok(), self.$tok()['$[]'](-1).$chr()], (type = $b[0]), (delimiter = $b[1]), $b;
-            
-            self.cs = self.$push_literal(type, delimiter, self.ts);
-            _goto_level = _again;
-            continue;;;;}
-            else if ((346)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1), $rb_plus(self.ts, 2)));
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((69)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1)), self.ts);
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((357)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            escape = $hash2([" ", "\r", "\n", "\t", "\v", "\f"], {" ": "\\s", "\r": "\\r", "\n": "\\n", "\t": "\\t", "\v": "\\v", "\f": "\\f"})['$[]'](self.source_buffer.$slice($rb_plus(self.ts, 1)));
-            self.$diagnostic("warning", "invalid_escape_use", $hash2(["escape"], {"escape": escape}), self.$range());
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((356)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$diagnostic("fatal", "incomplete_escape", nil, self.$range(self.ts, $rb_plus(self.ts, 1)));;}
-            else if ((336)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit_table($$($nesting, 'PUNCTUATION_BEGIN'));
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((52)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            if ($truthy(self['$version?'](18))) {
+              continue;;;;
+            } else if ($eqeqeq(214, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit_table($$('PUNCTUATION'));
+              self.cs = 465;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(226, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
               
-              ident = self.$tok(self.ts, $rb_minus(self.te, 2));
-              self.$emit((function() {if ($truthy(self.source_buffer.$slice(self.ts)['$=~'](/[A-Z]/))) {
-                return "tCONSTANT"
-              } else {
-                return "tIDENTIFIER"
-              }; return nil; })(), ident, self.ts, $rb_minus(self.te, 2));
               p = $rb_minus(p, 1);
-              if ($truthy((function() {if ($truthy(($ret_or_61 = self.static_env['$nil?']()['$!']()))) {
-                return self.static_env['$declared?'](ident)
-              } else {
-                return $ret_or_61
-              }; return nil; })())) {
-                self.cs = 810
-              } else {
-                self.cs = self.$arg_or_cmdarg(cmd_state)
-              };
-            } else {
+              p = $rb_minus(p, 1);
               
-              self.$emit("tLABEL", self.$tok(self.ts, $rb_minus(self.te, 2)), self.ts, $rb_minus(self.te, 1));
-              self.cs = 795;
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((49)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit("tIDENTIFIER", ident_tok, ident_ts, ident_te);
-            p = $rb_minus(ident_te, 1);
-            if ($truthy((function() {if ($truthy(($ret_or_62 = (function() {if ($truthy(($ret_or_63 = self.static_env['$nil?']()['$!']()))) {
-              return self.static_env['$declared?'](ident_tok)
-            } else {
-              return $ret_or_63
-            }; return nil; })()))) {
-              return $rb_lt(self.version, 25)
-            } else {
-              return $ret_or_62
-            }; return nil; })())) {
-              self.cs = 465
-            } else {
-              self.cs = 525
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((320)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            self.cs_before_block_comment = self.cs;
-            
-            self.cs = 186;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((56)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((304)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((330)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tUNARY_NUM", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
-            p = $rb_minus(p, 1);
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((329)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tSTAR", "*".$freeze());
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((325)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$diagnostic("fatal", "string_eof", nil, self.$range(self.ts, $rb_plus(self.ts, 1)));;}
-            else if ((354)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$diagnostic("error", "unterminated_heredoc_id", nil, self.$range(self.ts, $rb_plus(self.ts, 1)));;}
-            else if ((337)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1)), self.ts);
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((350)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            if ($truthy($rb_ge(self.version, 27))) {
-              self.$diagnostic("error", diag_msg, $hash2(["name"], {"name": self.$tok(tm, self.te)}), self.$range(tm, self.te))
-            } else {
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(20, $ret_or_1)) {
               
-              self.$emit("tCOLON", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
-              p = self.ts;
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((355)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$diagnostic("fatal", "incomplete_escape", nil, self.$range(self.ts, $rb_plus(self.ts, 1)));;}
-            else if ((361)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((327)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit_table($$($nesting, 'PUNCTUATION_BEGIN'));
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((331)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            if ($truthy($rb_ge(self.version, 27))) {
-              self.$emit("tBDOT2")
-            } else {
-              self.$emit("tDOT2")
-            };
-            self.cs = 563;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((332)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            followed_by_nl = $rb_minus(self.te, 1)['$=='](self.newline_s);
-            nl_emitted = false;
-            dots_te = (function() {if ($truthy(followed_by_nl)) {
-              return $rb_minus(self.te, 1)
-            } else {
-              return self.te
-            }; return nil; })();
-            if ($truthy($rb_ge(self.version, 30))) {
-              if ($truthy((function() {if ($truthy(($ret_or_64 = self.lambda_stack['$any?']()))) {
-                return $rb_plus(self.lambda_stack.$last(), 1)['$=='](self.paren_nest)
-              } else {
-                return $ret_or_64
-              }; return nil; })())) {
-                self.$emit("tDOT3", "...".$freeze(), self.ts, dots_te)
+              self.te = $rb_plus(p, 1);
+              
+              if ($truthy(self['$version?'](23))) {
+                
+                $b = [self.$tok()['$[]']($range(0, -2, false)), self.$tok()['$[]'](-1).$chr()], (type = $b[0]), (delimiter = $b[1]), $b;
+                
+                self.cs = self.$push_literal(type, delimiter, self.ts);
+                _goto_level = _again;
+                continue;;;
               } else {
                 
-                self.$emit("tBDOT3", "...".$freeze(), self.ts, dots_te);
-                if ($truthy((function() {if ($truthy(($ret_or_65 = (function() {if ($truthy(($ret_or_66 = $rb_ge(self.version, 31)))) {
-                  return followed_by_nl
-                } else {
-                  return $ret_or_66
-                }; return nil; })()))) {
-                  return self.context.$in_argdef()
-                } else {
-                  return $ret_or_65
-                }; return nil; })())) {
-                  
-                  self.$emit("tNL", $rb_minus(self.te, 1), self.te);
-                  nl_emitted = true;};
-              }
-            } else if ($truthy($rb_ge(self.version, 27))) {
-              self.$emit("tBDOT3", "...".$freeze(), self.ts, dots_te)
-            } else {
-              self.$emit("tDOT3", "...".$freeze(), self.ts, dots_te)
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_67 = followed_by_nl))) {
-              return nl_emitted['$!']()
-            } else {
-              return $ret_or_67
-            }; return nil; })())) {
-              p = $rb_minus(p, 1)};
-            self.cs = 563;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((307)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tIDENTIFIER");
-            if ($truthy((function() {if ($truthy(($ret_or_68 = self.static_env['$nil?']()['$!']()))) {
-              return self.static_env['$declared?'](self.$tok())
-            } else {
-              return $ret_or_68
-            }; return nil; })())) {
+                p = $rb_minus(self.ts, 1);
+                
+                self.cs = 810;
+                _goto_level = _again;
+                continue;;;
+              };;
+            } else if ($eqeqeq(213, $ret_or_1)) {
               
-              self.cs = 465;
+              self.te = $rb_plus(p, 1);
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
+              p = $rb_minus(p, 1);
               
-              self.cs = self.$arg_or_cmdarg(cmd_state);
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(212, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(p, 1);
               
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;
-            };;}
-            else if ((317)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);}
-            else if ((319)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            self.cs_before_block_comment = self.cs;
-            
-            self.cs = 186;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((322)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((54)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            self.$diagnostic("fatal", "string_eof", nil, self.$range(self.ts, $rb_plus(self.ts, 1)));;}
-            else if ((73)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            self.$diagnostic("error", "unterminated_heredoc_id", nil, self.$range(self.ts, $rb_plus(self.ts, 1)));;}
-            else if ((74)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            value = (function() {if ($truthy(($ret_or_69 = self.escape))) {
-              return $ret_or_69
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((48)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            self.$emit("tIDENTIFIER");
-            if ($truthy((function() {if ($truthy(($ret_or_70 = self.static_env['$nil?']()['$!']()))) {
-              return self.static_env['$declared?'](self.$tok())
-            } else {
-              return $ret_or_70
-            }; return nil; })())) {
+              continue;;;;
+            } else if ($eqeqeq(230, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
               
+              self.$emit_table($$('KEYWORDS_BEGIN'));
               self.cs = 465;
               
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;
-            } else {
+              continue;;;;
+            } else if ($eqeqeq(227, $ret_or_1)) {
               
-              self.cs = self.$arg_or_cmdarg(cmd_state);
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tCONSTANT");
+              self.cs = 465;
               
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;
-            };;}
-            else if ((53)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;}
-            else if ((68)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((51)['$===']($case)) {
-            $case = self.act;
-            if ((99)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit("tUNARY_NUM", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
-            p = $rb_minus(p, 1);
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((106)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$diagnostic("error", "unterminated_heredoc_id", nil, self.$range(self.ts, $rb_plus(self.ts, 1)));}
-            else if ((117)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            if ($truthy($rb_ge(self.version, 27))) {
+              continue;;;;
+            } else if ($eqeqeq(229, $ret_or_1)) {
               
-              self.$emit("tPIPE", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
+              self.te = p;
               p = $rb_minus(p, 1);
-              self.cs = 563;
+              
+              self.$emit("tIDENTIFIER");
+              self.cs = 465;
               
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;
-            } else {
+              continue;;;;
+            } else if ($eqeqeq(224, $ret_or_1)) {
               
-              p = $rb_minus(p, 2);
+              self.te = p;
+              p = $rb_minus(p, 1);
               
+              p = $rb_minus(self.ts, 1);
               self.cs = 810;
-              _goto_level = _again;
-              continue;;;
-            };}
-            else if ((121)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'PUNCTUATION_BEGIN'));
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((122)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit("kRESCUE", "rescue".$freeze(), self.ts, tm);
-            p = $rb_minus(tm, 1);
-            self.cs = 539;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((123)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'KEYWORDS_BEGIN'));
-            self.command_start = true;
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((127)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;}
-            else if ((128)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit("tIDENTIFIER");
-            if ($truthy((function() {if ($truthy(($ret_or_71 = self.static_env['$nil?']()['$!']()))) {
-              return self.static_env['$declared?'](self.$tok())
-            } else {
-              return $ret_or_71
-            }; return nil; })())) {
               
+              
+              $writer = [self.top, self.cs];
+              $send(self.stack, '[]=', $to_a($writer));
+              $writer[$rb_minus($writer["length"], 1)];;
+              self.top = $rb_plus(self.top, 1);
+              self.cs = 347;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(220, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit_table($$('PUNCTUATION'));
               self.cs = 465;
               
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;
-            } else {
+              continue;;;;
+            } else if ($eqeqeq(225, $ret_or_1)) {
               
-              self.cs = self.$arg_or_cmdarg(cmd_state);
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            };}
-            else if ((132)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;};}
-            else if ((395)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((396)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((397)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);}
-            else if ((401)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((77)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((405)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            
-            self.cs = self.$push_literal(self.$tok(), self.$tok(), self.ts);
-            _goto_level = _again;
-            continue;;;;}
-            else if ((404)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((403)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((407)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);}
-            else if ((406)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((76)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 563;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((440)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit("tLAMBDA", "->".$freeze(), self.ts, $rb_plus(self.ts, 2));
-            self.lambda_stack.$push(self.paren_nest);
-            self.cs = 465;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((86)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit("kCLASS", "class".$freeze(), self.ts, $rb_plus(self.ts, 5));
-            self.$emit("tLSHFT", "<<".$freeze(), $rb_minus(self.te, 2), self.te);
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((415)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            $b = [self.$tok(), self.$tok()['$[]'](-1).$chr()], (type = $b[0]), (delimiter = $b[1]), $b;
-            
-            self.cs = self.$push_literal(type, delimiter, self.ts, nil, false, false, true);
-            _goto_level = _again;
-            continue;;;;}
-            else if ((79)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            
-            $writer = [self.top, self.cs];
-            $send(self.stack, '[]=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];;
-            self.top = $rb_plus(self.top, 1);
-            self.cs = 347;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((436)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            self.cs = 473;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((489)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((429)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((434)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit("tOP_ASGN", self.$tok(self.ts, $rb_minus(self.te, 1)));
-            self.cs = 563;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((420)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit("tEH", "?".$freeze());
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((417)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            self.cs = 563;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((419)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit("tSEMI", ";".$freeze());
-            self.command_start = true;
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((494)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$diagnostic("error", "bare_backslash", nil, self.$range(self.ts, $rb_plus(self.ts, 1)));
-            p = $rb_minus(p, 1);;}
-            else if ((414)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$diagnostic("fatal", "unexpected", $hash2(["character"], {"character": self.$tok().$inspect()['$[]']($range(1, -2, false))}));;}
-            else if ((413)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((505)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit_table($$($nesting, 'KEYWORDS'));
-            self.cs = 352;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((503)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("kCLASS", "class".$freeze(), self.ts, $rb_plus(self.ts, 5));
-            self.$emit("tLSHFT", "<<".$freeze(), $rb_minus(self.te, 2), self.te);
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((502)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit_table($$($nesting, 'KEYWORDS'));
-            self.command_start = true;
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((444)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$diagnostic("error", "no_dot_digit_literal");;}
-            else if ((491)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tCONSTANT");
-            self.cs = self.$arg_or_cmdarg(cmd_state);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((433)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            
-            $writer = [self.top, self.cs];
-            $send(self.stack, '[]=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];;
-            self.top = $rb_plus(self.top, 1);
-            self.cs = 347;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((441)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            self.cs = 473;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((497)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tIDENTIFIER");
-            if ($truthy((function() {if ($truthy(($ret_or_72 = self.static_env['$nil?']()['$!']()))) {
-              return self.static_env['$declared?'](self.$tok())
-            } else {
-              return $ret_or_72
-            }; return nil; })())) {
+              p = $rb_minus(p, 1);
               
-              self.cs = 465;
+              self.cs = 563;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(218, $ret_or_1)) {
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
+              self.te = p;
+              p = $rb_minus(p, 1);
+            } else if ($eqeqeq(223, $ret_or_1)) {
               
-              self.cs = self.$arg_or_cmdarg(cmd_state);
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(19, $ret_or_1)) {
+              
+              
+              p = $rb_minus(self.te, 1);;
+              
+              self.$emit_table($$('PUNCTUATION'));
+              self.cs = 465;
               
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;
-            };;}
-            else if ((439)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((435)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((428)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            self.cs = 563;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((442)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            self.cs = 563;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((426)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);}
-            else if ((432)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$diagnostic("fatal", "unexpected", $hash2(["character"], {"character": self.$tok().$inspect()['$[]']($range(1, -2, false))}));;}
-            else if ((84)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            digits = self.$tok(self.num_digits_s, self.num_suffix_s);
-            if ($truthy(digits['$end_with?']("_".$freeze()))) {
-              self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
-            } else if ($truthy((function() {if ($truthy(($ret_or_73 = (function() {if ($truthy(($ret_or_74 = digits['$empty?']()))) {
-              return self.num_base['$=='](8)
-            } else {
-              return $ret_or_74
-            }; return nil; })()))) {
-              return self['$version?'](18)
-            } else {
-              return $ret_or_73
-            }; return nil; })())) {
-              digits = "0".$freeze()
-            } else if ($truthy(digits['$empty?']())) {
-              self.$diagnostic("error", "empty_numeric")
-            } else if ($truthy((function() {if ($truthy(($ret_or_75 = self.num_base['$=='](8)))) {
-              
-              return (invalid_idx = digits.$index(/[89]/));
-            } else {
-              return $ret_or_75
-            }; return nil; })())) {
+              continue;;;;
+            } else if ($eqeqeq(17, $ret_or_1)) {
               
-              invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
-              self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));};
-            if ($truthy(self['$version?'](18, 19, 20))) {
               
-              self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits.$to_i(self.num_base))
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((80)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            self.$diagnostic("error", "no_dot_digit_literal");;}
-            else if ((83)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            digits = self.$tok(self.ts, self.num_suffix_s);
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              p = $rb_minus(self.te, 1);;
               
-              self.$emit("tFLOAT", self.$Float(digits), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits)
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((78)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            self.$diagnostic("fatal", "unexpected", $hash2(["character"], {"character": self.$tok().$inspect()['$[]']($range(1, -2, false))}));;}
-            else if ((81)['$===']($case)) {
-            $case = self.act;
-            if ((145)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            if (self.lambda_stack.$last()['$=='](self.paren_nest)) {
+              p = $rb_minus(p, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(216, $ret_or_1)) {
               
-              self.lambda_stack.$pop();
-              if (self.$tok()['$==']("{".$freeze())) {
-                self.$emit("tLAMBEG", "{".$freeze())
+              if ($eqeqeq(43, ($ret_or_2 = self.act))) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('KEYWORDS_BEGIN'));
+                self.cs = 465;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(44, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit("tCONSTANT");
+                self.cs = 465;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(45, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit("tIDENTIFIER");
+                self.cs = 465;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
               } else {
-                self.$emit("kDO_LAMBDA", "do".$freeze())
+                nil
               };
-            } else if (self.$tok()['$==']("{".$freeze())) {
-              self.$emit("tLCURLY", "{".$freeze())
-            } else {
-              self.$emit_do()
-            };
-            if (self.$tok()['$==']("{".$freeze())) {
-              self.paren_nest = $rb_plus(self.paren_nest, 1)};
-            self.command_start = true;
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((146)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'KEYWORDS'));
-            self.cs = 352;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((147)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit("kCLASS", "class".$freeze(), self.ts, $rb_plus(self.ts, 5));
-            self.$emit("tLSHFT", "<<".$freeze(), $rb_minus(self.te, 2), self.te);
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((148)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'KEYWORDS'));
-            self.cs = 563;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((149)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'KEYWORDS'));
-            self.command_start = true;
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((150)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'KEYWORDS'));
-            self.cs = 539;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((151)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'KEYWORDS'));
-            if ($truthy((function() {if ($truthy(($ret_or_76 = self['$version?'](18)))) {
-              return self.$tok()['$==']("not".$freeze())
-            } else {
-              return $ret_or_76
-            }; return nil; })())) {
-              
-              self.cs = 563;
+            } else if ($eqeqeq(22, $ret_or_1)) {
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
+              self.te = $rb_plus(p, 1);
               
-              self.cs = 494;
+              self.$emit("tLABEL", self.$tok(self.ts, $rb_minus(self.te, 2)), self.ts, $rb_minus(self.te, 1));
+              p = $rb_minus(p, 1);
+              self.cs = 795;
               
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;
-            };}
-            else if ((152)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            if ($truthy(self['$version?'](18))) {
+              continue;;;;
+            } else if ($eqeqeq(23, $ret_or_1)) {
               
-              self.$emit("tIDENTIFIER");
-              if ($truthy((function() {if ($truthy(($ret_or_77 = self.static_env['$nil?']()['$!']()))) {
-                return self.static_env['$declared?'](self.$tok())
-              } else {
-                return $ret_or_77
-              }; return nil; })())) {
+              self.te = $rb_plus(p, 1);
+              
+              if (($truthy($rb_ge(self.version, 31)) && ($truthy(self.context.$in_argdef())))) {
+                
+                self.$emit("tBDOT3", "...".$freeze());
+                self.cs = 810;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
               } else {
-                self.cs = self.$arg_or_cmdarg(cmd_state)
-              };
-            } else {
-              self.$emit("k__ENCODING__", "__ENCODING__".$freeze())
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((153)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'KEYWORDS'));
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((154)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            digits = self.$tok(self.num_digits_s, self.num_suffix_s);
-            if ($truthy(digits['$end_with?']("_".$freeze()))) {
-              self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
-            } else if ($truthy((function() {if ($truthy(($ret_or_78 = (function() {if ($truthy(($ret_or_79 = digits['$empty?']()))) {
-              return self.num_base['$=='](8)
-            } else {
-              return $ret_or_79
-            }; return nil; })()))) {
-              return self['$version?'](18)
-            } else {
-              return $ret_or_78
-            }; return nil; })())) {
-              digits = "0".$freeze()
-            } else if ($truthy(digits['$empty?']())) {
-              self.$diagnostic("error", "empty_numeric")
-            } else if ($truthy((function() {if ($truthy(($ret_or_80 = self.num_base['$=='](8)))) {
-              
-              return (invalid_idx = digits.$index(/[89]/));
-            } else {
-              return $ret_or_80
-            }; return nil; })())) {
+                
+                p = $rb_minus(p, 3);
+                
+                self.cs = 810;
+                _goto_level = _again;
+                continue;;;
+              };;
+            } else if ($eqeqeq(233, $ret_or_1)) {
               
-              invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
-              self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));};
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              self.te = $rb_plus(p, 1);
               
-              self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits.$to_i(self.num_base))
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((156)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            if ($truthy(self['$version?'](18, 19, 20))) {
-              self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": self.$tok($rb_minus(self.te, 1), self.te)}), self.$range($rb_minus(self.te, 1), self.te))
-            } else {
+              p = $rb_minus(p, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(232, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
               
-              self.$emit("tINTEGER", self.$tok(self.ts, $rb_minus(self.te, 1)).$to_i(), self.ts, $rb_minus(self.te, 1));
               p = $rb_minus(p, 1);
               
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;
-            };}
-            else if ((157)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            if ($truthy(self['$version?'](18, 19, 20))) {
-              self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": self.$tok($rb_minus(self.te, 1), self.te)}), self.$range($rb_minus(self.te, 1), self.te))
-            } else {
+              continue;;;;
+            } else if ($eqeqeq(235, $ret_or_1)) {
               
-              self.$emit("tFLOAT", self.$tok(self.ts, $rb_minus(self.te, 1)).$to_f(), self.ts, $rb_minus(self.te, 1));
+              self.te = p;
               p = $rb_minus(p, 1);
+            } else if ($eqeqeq(234, $ret_or_1)) {
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            };}
-            else if ((158)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            digits = self.$tok(self.ts, self.num_suffix_s);
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              self.$emit("tFLOAT", self.$Float(digits), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits)
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((160)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit("tCONSTANT");
-            self.cs = self.$arg_or_cmdarg(cmd_state);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((164)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit("tIDENTIFIER");
-            if ($truthy((function() {if ($truthy(($ret_or_81 = self.static_env['$nil?']()['$!']()))) {
-              return self.static_env['$declared?'](self.$tok())
-            } else {
-              return $ret_or_81
-            }; return nil; })())) {
+              p = $rb_minus(p, 1);
               
-              self.cs = 465;
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(21, $ret_or_1)) {
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
               
-              self.cs = self.$arg_or_cmdarg(cmd_state);
+              p = $rb_minus(self.te, 1);;
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            };}
-            else if ((165)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            if (tm['$=='](self.te)) {
-              self.$emit("tFID")
-            } else {
+              p = $rb_minus(p, 1);
               
-              self.$emit("tIDENTIFIER", self.$tok(self.ts, tm), self.ts, tm);
-              p = $rb_minus(tm, 1);
-            };
-            self.cs = 494;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((167)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((168)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            self.cs = 563;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;};}
-            else if ((516)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit("tNL", nil, self.newline_s, $rb_plus(self.newline_s, 1));
-            if ($truthy($rb_lt(self.version, 27))) {
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(241, $ret_or_1)) {
               
-              p = $rb_minus(p, 1);
-              self.cs = 186;
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit_table($$('PUNCTUATION'));
+              self.cs = 494;
               
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;
-            } else {
+              continue;;;;
+            } else if ($eqeqeq(240, $ret_or_1)) {
               
-              self.$emit("tBDOT3");
-              self.cs = 563;
+              self.te = $rb_plus(p, 1);
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            };;}
-            else if ((95)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(tm, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((510)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit("tNL", nil, self.newline_s, $rb_plus(self.newline_s, 1));
-            p = $rb_minus(p, 1);
-            self.cs = 186;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((513)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            if ($truthy($rb_lt(self.version, 27))) {
+              p = $rb_minus(p, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(239, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
               
-              self.$emit("tNL", nil, self.newline_s, $rb_plus(self.newline_s, 1));
               p = $rb_minus(p, 1);
-              self.cs = 186;
               
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;};;}
-            else if ((515)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tNL", nil, self.newline_s, $rb_plus(self.newline_s, 1));
-            if ($truthy($rb_lt(self.version, 27))) {
+              continue;;;;
+            } else if ($eqeqeq(251, $ret_or_1)) {
               
+              self.te = p;
               p = $rb_minus(p, 1);
-              self.cs = 186;
+              
+              self.$emit("tCONSTANT");
+              self.cs = self.$arg_or_cmdarg(cmd_state);
               
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;
-            } else {
+              continue;;;;
+            } else if ($eqeqeq(242, $ret_or_1)) {
               
-              self.$emit("tBDOT2");
-              self.cs = 563;
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tIDENTIFIER");
+              self.cs = self.$arg_or_cmdarg(cmd_state);
               
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;
-            };;}
-            else if ((514)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(tm, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((512)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tNL", nil, self.newline_s, $rb_plus(self.newline_s, 1));
-            p = $rb_minus(p, 1);
-            self.cs = 186;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((90)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            if ($truthy($rb_lt(self.version, 27))) {
+              continue;;;;
+            } else if ($eqeqeq(247, $ret_or_1)) {
               
-              self.$emit("tNL", nil, self.newline_s, $rb_plus(self.newline_s, 1));
+              self.te = p;
               p = $rb_minus(p, 1);
-              self.cs = 186;
+              
+              self.$emit_table($$('PUNCTUATION'));
+              self.cs = 494;
               
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;};;}
-            else if ((87)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            self.$emit("tNL", nil, self.newline_s, $rb_plus(self.newline_s, 1));
-            p = $rb_minus(p, 1);
-            self.cs = 186;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((91)['$===']($case)) {
-            $case = self.act;
-            if ((181)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            if ($truthy($rb_lt(self.version, 27))) {
+              continue;;;;
+            } else if ($eqeqeq(245, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+            } else if ($eqeqeq(250, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(274, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(257, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              if ($eqeq(self.$tok(tm, $rb_plus(tm, 1)), "/".$freeze())) {
+                if ($truthy($rb_lt(self.version, 30))) {
+                  self.$diagnostic("warning", "ambiguous_literal", nil, self.$range(tm, $rb_plus(tm, 1)))
+                } else {
+                  self.$diagnostic("warning", "ambiguous_regexp", nil, self.$range(tm, $rb_plus(tm, 1)))
+                }
+              };
+              p = $rb_minus(tm, 1);
+              
+              self.cs = 563;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(263, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              p = $rb_minus(p, 1);
+              
+              self.cs = 563;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(25, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 563;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(265, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(tm, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(40, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(252, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              self.cs = 563;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(253, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
               
-              self.$emit("tNL", nil, self.newline_s, $rb_plus(self.newline_s, 1));
               p = $rb_minus(p, 1);
-              self.cs = 186;
               
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;};}
-            else if ((185)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit("tNL", nil, self.newline_s, $rb_plus(self.newline_s, 1));
-            p = $rb_minus(p, 1);
-            self.cs = 186;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;};}
-            else if ((519)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit_comment(self.eq_begin_s, self.te);
-            
-            self.cs = self.cs_before_block_comment;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((518)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$diagnostic("fatal", "embedded_document", nil, self.$range(self.eq_begin_s, $rb_plus(self.eq_begin_s, "=begin".$length())));;}
-            else if ((106)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            self.eq_begin_s = self.ts;
-            
-            self.cs = 998;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((2)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(pe, 3);;}
-            else if ((98)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            cmd_state = true;
-            p = $rb_minus(p, 1);
-            
-            self.cs = 802;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((99)['$===']($case)) {
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;}
-            else if ((100)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);}
-            else if ((105)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.eq_begin_s = self.ts;
-            
-            self.cs = 998;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((104)['$===']($case)) {
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            cmd_state = true;
-            p = $rb_minus(p, 1);
-            
-            self.cs = 802;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((1)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            
-            cmd_state = true;
-            p = $rb_minus(p, 1);
-            
-            self.cs = 802;
-            _goto_level = _again;
-            continue;;;;}
-            else if ((67)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;}
-            else if ((110)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            if (self.te['$=='](pe)) {
-              self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))};
-            if ($truthy(current_literal['$heredoc?']())) {
+              continue;;;;
+            } else if ($eqeqeq(264, $ret_or_1)) {
               
-              line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
-              if ($truthy(self['$version?'](18, 19, 20))) {
-                line = line.$gsub(/\r.*$/, "".$freeze())};
-              if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              self.cs = 563;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(260, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$diagnostic("warning", "ambiguous_prefix", $hash2(["prefix"], {"prefix": self.$tok(tm, self.te)}), self.$range(tm, self.te));
+              p = $rb_minus(tm, 1);
+              
+              self.cs = 563;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(262, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              self.cs = 563;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(256, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(255, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+            } else if ($eqeqeq(273, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              self.cs = 563;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(26, $ret_or_1)) {
+              
+              
+              p = $rb_minus(self.te, 1);;
+            } else if ($eqeqeq(42, $ret_or_1)) {
+              
+              
+              p = $rb_minus(self.te, 1);;
+              
+              p = $rb_minus(p, 1);
+              
+              self.cs = 563;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(24, $ret_or_1)) {
+              
+              if ($eqeqeq(72, ($ret_or_2 = self.act))) {
                 
-                self.herebody_s = self.te;
-                p = $rb_minus(current_literal.$heredoc_e(), 1);
-                self.cs = self.$pop_literal();
                 
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
+                p = $rb_minus(self.te, 1);;
+                if ($eqeq(self.$tok(tm, $rb_plus(tm, 1)), "/".$freeze())) {
+                  if ($truthy($rb_lt(self.version, 30))) {
+                    self.$diagnostic("warning", "ambiguous_literal", nil, self.$range(tm, $rb_plus(tm, 1)))
+                  } else {
+                    self.$diagnostic("warning", "ambiguous_regexp", nil, self.$range(tm, $rb_plus(tm, 1)))
+                  }
+                };
+                p = $rb_minus(tm, 1);
+                
+                self.cs = 563;
+                _goto_level = _again;
                 continue;;;
-              } else {
+              } else if ($eqeqeq(73, $ret_or_2)) {
                 
-                current_literal.$infer_indent_level(line);
-                self.herebody_s = self.te;
-              };
-            } else {
-              
-              if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
                 
-                self.cs = self.$pop_literal();
+                p = $rb_minus(self.te, 1);;
+                self.$diagnostic("warning", "ambiguous_prefix", $hash2(["prefix"], {"prefix": self.$tok(tm, self.te)}), self.$range(tm, self.te));
+                p = $rb_minus(tm, 1);
                 
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;};
-              if ($truthy(self.herebody_s)) {
+                self.cs = 563;
+                _goto_level = _again;
+                continue;;;
+              } else if ($eqeqeq(78, $ret_or_2)) {
                 
-                p = $rb_minus(self.herebody_s, 1);
-                self.herebody_s = nil;};
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_82 = current_literal['$words?']()))) {
-              return self['$eof_codepoint?'](self.source_pts['$[]'](p))['$!']()
-            } else {
-              return $ret_or_82
-            }; return nil; })())) {
-              current_literal.$extend_space(self.ts, self.te)
-            } else {
-              
-              current_literal.$extend_string(self.$tok(), self.ts, self.te);
-              current_literal.$flush_string();
-            };;;}
-            else if ((143)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            if (self.te['$=='](pe)) {
-              self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))};
-            if ($truthy(current_literal['$heredoc?']())) {
-              
-              line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
-              if ($truthy(self['$version?'](18, 19, 20))) {
-                line = line.$gsub(/\r.*$/, "".$freeze())};
-              if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
                 
-                self.herebody_s = self.te;
-                p = $rb_minus(current_literal.$heredoc_e(), 1);
-                self.cs = self.$pop_literal();
+                p = $rb_minus(self.te, 1);;
+                p = $rb_minus(self.ts, 1);
                 
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
+                self.cs = 810;
+                _goto_level = _again;
                 continue;;;
               } else {
                 
-                current_literal.$infer_indent_level(line);
-                self.herebody_s = self.te;
+                
+                p = $rb_minus(self.te, 1);;
               };
-            } else {
+            } else if ($eqeqeq(44, $ret_or_1)) {
               
-              if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
-                
-                self.cs = self.$pop_literal();
-                
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;};
-              if ($truthy(self.herebody_s)) {
-                
-                p = $rb_minus(self.herebody_s, 1);
-                self.herebody_s = nil;};
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_83 = current_literal['$words?']()))) {
-              return self['$eof_codepoint?'](self.source_pts['$[]'](p))['$!']()
-            } else {
-              return $ret_or_83
-            }; return nil; })())) {
-              current_literal.$extend_space(self.ts, self.te)
-            } else {
+              self.te = $rb_plus(p, 1);
               
-              current_literal.$extend_string(self.$tok(), self.ts, self.te);
-              current_literal.$flush_string();
-            };;;}
-            else if ((174)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            if (self.te['$=='](pe)) {
-              self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))};
-            if ($truthy(current_literal['$heredoc?']())) {
+              p = $rb_minus(self.ts, 1);
               
-              line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
-              if ($truthy(self['$version?'](18, 19, 20))) {
-                line = line.$gsub(/\r.*$/, "".$freeze())};
-              if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+              self.cs = 494;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(278, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(279, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 494;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(45, $ret_or_1)) {
+              
+              
+              p = $rb_minus(self.te, 1);;
+              
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 494;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(43, $ret_or_1)) {
+              
+              if ($eqeqeq(85, ($ret_or_2 = self.act))) {
+                
                 
-                self.herebody_s = self.te;
-                p = $rb_minus(current_literal.$heredoc_e(), 1);
-                self.cs = self.$pop_literal();
+                p = $rb_minus(self.te, 1);;
+                if ($truthy(self.cond['$active?']())) {
+                  self.$emit("kDO_COND", "do".$freeze(), $rb_minus(self.te, 2), self.te)
+                } else {
+                  self.$emit("kDO", "do".$freeze(), $rb_minus(self.te, 2), self.te)
+                };
+                self.cs = 802;
                 
                 p = $rb_plus(p, 1);
                 _goto_level = _out;
                 continue;;;
-              } else {
-                
-                current_literal.$infer_indent_level(line);
-                self.herebody_s = self.te;
-              };
-            } else {
-              
-              if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
-                
-                self.cs = self.$pop_literal();
-                
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;};
-              if ($truthy(self.herebody_s)) {
+              } else if ($eqeqeq(86, $ret_or_2)) {
                 
-                p = $rb_minus(self.herebody_s, 1);
-                self.herebody_s = nil;};
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_84 = current_literal['$words?']()))) {
-              return self['$eof_codepoint?'](self.source_pts['$[]'](p))['$!']()
-            } else {
-              return $ret_or_84
-            }; return nil; })())) {
-              current_literal.$extend_space(self.ts, self.te)
-            } else {
-              
-              current_literal.$extend_string(self.$tok(), self.ts, self.te);
-              current_literal.$flush_string();
-            };;;}
-            else if ((180)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            if (self.te['$=='](pe)) {
-              self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))};
-            if ($truthy(current_literal['$heredoc?']())) {
-              
-              line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
-              if ($truthy(self['$version?'](18, 19, 20))) {
-                line = line.$gsub(/\r.*$/, "".$freeze())};
-              if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
                 
-                self.herebody_s = self.te;
-                p = $rb_minus(current_literal.$heredoc_e(), 1);
-                self.cs = self.$pop_literal();
+                p = $rb_minus(self.te, 1);;
+                p = $rb_minus(self.ts, 1);
                 
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
+                self.cs = 494;
+                _goto_level = _again;
                 continue;;;
               } else {
-                
-                current_literal.$infer_indent_level(line);
-                self.herebody_s = self.te;
+                nil
               };
-            } else {
+            } else if ($eqeqeq(289, $ret_or_1)) {
               
-              if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
-                
-                self.cs = self.$pop_literal();
-                
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;};
-              if ($truthy(self.herebody_s)) {
-                
-                p = $rb_minus(self.herebody_s, 1);
-                self.herebody_s = nil;};
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_85 = current_literal['$words?']()))) {
-              return self['$eof_codepoint?'](self.source_pts['$[]'](p))['$!']()
-            } else {
-              return $ret_or_85
-            }; return nil; })())) {
-              current_literal.$extend_space(self.ts, self.te)
-            } else {
+              self.te = $rb_plus(p, 1);
               
-              current_literal.$extend_string(self.$tok(), self.ts, self.te);
-              current_literal.$flush_string();
-            };;;}
-            else if ((186)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            if (self.te['$=='](pe)) {
-              self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))};
-            if ($truthy(current_literal['$heredoc?']())) {
+              self.$emit_do(true);
+              self.cs = 802;
               
-              line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
-              if ($truthy(self['$version?'](18, 19, 20))) {
-                line = line.$gsub(/\r.*$/, "".$freeze())};
-              if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
-                
-                self.herebody_s = self.te;
-                p = $rb_minus(current_literal.$heredoc_e(), 1);
-                self.cs = self.$pop_literal();
-                
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;
-              } else {
-                
-                current_literal.$infer_indent_level(line);
-                self.herebody_s = self.te;
-              };
-            } else {
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(282, $ret_or_1)) {
               
-              if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
-                
-                self.cs = self.$pop_literal();
-                
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;};
-              if ($truthy(self.herebody_s)) {
-                
-                p = $rb_minus(self.herebody_s, 1);
-                self.herebody_s = nil;};
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_86 = current_literal['$words?']()))) {
-              return self['$eof_codepoint?'](self.source_pts['$[]'](p))['$!']()
-            } else {
-              return $ret_or_86
-            }; return nil; })())) {
-              current_literal.$extend_space(self.ts, self.te)
-            } else {
+              self.te = $rb_plus(p, 1);
               
-              current_literal.$extend_string(self.$tok(), self.ts, self.te);
-              current_literal.$flush_string();
-            };;;}
-            else if ((193)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            if (self.te['$=='](pe)) {
-              self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))};
-            if ($truthy(current_literal['$heredoc?']())) {
+              p = $rb_minus(p, 1);
               
-              line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
-              if ($truthy(self['$version?'](18, 19, 20))) {
-                line = line.$gsub(/\r.*$/, "".$freeze())};
-              if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
-                
-                self.herebody_s = self.te;
-                p = $rb_minus(current_literal.$heredoc_e(), 1);
-                self.cs = self.$pop_literal();
-                
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;
-              } else {
-                
-                current_literal.$infer_indent_level(line);
-                self.herebody_s = self.te;
-              };
-            } else {
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(283, $ret_or_1)) {
               
-              if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
-                
-                self.cs = self.$pop_literal();
-                
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;};
-              if ($truthy(self.herebody_s)) {
-                
-                p = $rb_minus(self.herebody_s, 1);
-                self.herebody_s = nil;};
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_87 = current_literal['$words?']()))) {
-              return self['$eof_codepoint?'](self.source_pts['$[]'](p))['$!']()
-            } else {
-              return $ret_or_87
-            }; return nil; })())) {
-              current_literal.$extend_space(self.ts, self.te)
-            } else {
+              self.te = $rb_plus(p, 1);
               
-              current_literal.$extend_string(self.$tok(), self.ts, self.te);
-              current_literal.$flush_string();
-            };;;}
-            else if ((196)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            if (self.te['$=='](pe)) {
-              self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))};
-            if ($truthy(current_literal['$heredoc?']())) {
+              p = $rb_minus(p, 1);
               
-              line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
-              if ($truthy(self['$version?'](18, 19, 20))) {
-                line = line.$gsub(/\r.*$/, "".$freeze())};
-              if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
-                
-                self.herebody_s = self.te;
-                p = $rb_minus(current_literal.$heredoc_e(), 1);
-                self.cs = self.$pop_literal();
-                
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;
-              } else {
-                
-                current_literal.$infer_indent_level(line);
-                self.herebody_s = self.te;
-              };
-            } else {
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(284, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+            } else if ($eqeqeq(287, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(293, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              self.cs = 563;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(292, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(301, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 563;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(295, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+            } else if ($eqeqeq(299, $ret_or_1)) {
               
-              if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              self.cs = 563;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(294, $ret_or_1)) {
+              
+              if ($eqeqeq(93, ($ret_or_2 = self.act))) {
+                
                 
-                self.cs = self.$pop_literal();
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('KEYWORDS'));
+                self.cs = 563;
                 
                 p = $rb_plus(p, 1);
                 _goto_level = _out;
-                continue;;;};
-              if ($truthy(self.herebody_s)) {
+                continue;;;
+              } else if ($eqeqeq(94, $ret_or_2)) {
                 
-                p = $rb_minus(self.herebody_s, 1);
-                self.herebody_s = nil;};
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_88 = current_literal['$words?']()))) {
-              return self['$eof_codepoint?'](self.source_pts['$[]'](p))['$!']()
-            } else {
-              return $ret_or_88
-            }; return nil; })())) {
-              current_literal.$extend_space(self.ts, self.te)
-            } else {
-              
-              current_literal.$extend_string(self.$tok(), self.ts, self.te);
-              current_literal.$flush_string();
-            };;;}
-            else if ((204)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            if (self.te['$=='](pe)) {
-              self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))};
-            if ($truthy(current_literal['$heredoc?']())) {
-              
-              line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
-              if ($truthy(self['$version?'](18, 19, 20))) {
-                line = line.$gsub(/\r.*$/, "".$freeze())};
-              if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
                 
-                self.herebody_s = self.te;
-                p = $rb_minus(current_literal.$heredoc_e(), 1);
-                self.cs = self.$pop_literal();
+                p = $rb_minus(self.te, 1);;
+                p = $rb_minus(self.ts, 1);
                 
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
+                self.cs = 563;
+                _goto_level = _again;
                 continue;;;
               } else {
-                
-                current_literal.$infer_indent_level(line);
-                self.herebody_s = self.te;
+                nil
               };
-            } else {
+            } else if ($eqeqeq(57, $ret_or_1)) {
               
-              if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
-                
-                self.cs = self.$pop_literal();
-                
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;};
-              if ($truthy(self.herebody_s)) {
-                
-                p = $rb_minus(self.herebody_s, 1);
-                self.herebody_s = nil;};
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_89 = current_literal['$words?']()))) {
-              return self['$eof_codepoint?'](self.source_pts['$[]'](p))['$!']()
-            } else {
-              return $ret_or_89
-            }; return nil; })())) {
-              current_literal.$extend_space(self.ts, self.te)
-            } else {
+              self.te = $rb_plus(p, 1);
               
-              current_literal.$extend_string(self.$tok(), self.ts, self.te);
-              current_literal.$flush_string();
-            };;;}
-            else if ((275)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;;}
-            else if ((266)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(tm, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;;}
-            else if ((258)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;;}
-            else if ((358)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            escape = $hash2([" ", "\r", "\n", "\t", "\v", "\f"], {" ": "\\s", "\r": "\\r", "\n": "\\n", "\t": "\\t", "\v": "\\v", "\f": "\\f"})['$[]'](self.source_buffer.$slice($rb_plus(self.ts, 1)));
-            self.$diagnostic("warning", "invalid_escape_use", $hash2(["escape"], {"escape": escape}), self.$range());
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;;}
-            else if ((333)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            followed_by_nl = $rb_minus(self.te, 1)['$=='](self.newline_s);
-            nl_emitted = false;
-            dots_te = (function() {if ($truthy(followed_by_nl)) {
-              return $rb_minus(self.te, 1)
-            } else {
-              return self.te
-            }; return nil; })();
-            if ($truthy($rb_ge(self.version, 30))) {
-              if ($truthy((function() {if ($truthy(($ret_or_90 = self.lambda_stack['$any?']()))) {
-                return $rb_plus(self.lambda_stack.$last(), 1)['$=='](self.paren_nest)
-              } else {
-                return $ret_or_90
-              }; return nil; })())) {
-                self.$emit("tDOT3", "...".$freeze(), self.ts, dots_te)
-              } else {
-                
-                self.$emit("tBDOT3", "...".$freeze(), self.ts, dots_te);
-                if ($truthy((function() {if ($truthy(($ret_or_91 = (function() {if ($truthy(($ret_or_92 = $rb_ge(self.version, 31)))) {
-                  return followed_by_nl
-                } else {
-                  return $ret_or_92
-                }; return nil; })()))) {
-                  return self.context.$in_argdef()
-                } else {
-                  return $ret_or_91
-                }; return nil; })())) {
-                  
-                  self.$emit("tNL", $rb_minus(self.te, 1), self.te);
-                  nl_emitted = true;};
-              }
-            } else if ($truthy($rb_ge(self.version, 27))) {
-              self.$emit("tBDOT3", "...".$freeze(), self.ts, dots_te)
-            } else {
-              self.$emit("tDOT3", "...".$freeze(), self.ts, dots_te)
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_93 = followed_by_nl))) {
-              return nl_emitted['$!']()
-            } else {
-              return $ret_or_93
-            }; return nil; })())) {
-              p = $rb_minus(p, 1)};
-            self.cs = 563;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((321)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            self.cs_before_block_comment = self.cs;
-            
-            self.cs = 186;
-            _goto_level = _again;
-            continue;;;;;}
-            else if ((443)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            if (self.paren_nest['$=='](0)) {
-              self.$diagnostic("warning", "triple_dot_at_eol", nil, self.$range(self.ts, $rb_minus(self.te, 1)))};
-            self.$emit("tDOT3", "...".$freeze(), self.ts, $rb_minus(self.te, 1));
-            p = $rb_minus(p, 1);
-            self.cs = 563;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((520)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit_comment(self.eq_begin_s, self.te);
-            
-            self.cs = self.cs_before_block_comment;
-            _goto_level = _again;
-            continue;;;;;}
-            else if ((517)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.te = $rb_plus(p, 1);;}
-            else if ((107)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            self.eq_begin_s = self.ts;
-            
-            self.cs = 998;
-            _goto_level = _again;
-            continue;;;;;}
-            else if ((3)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(pe, 3);;;}
-            else if ((465)['$===']($case)) {
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$13 = function(chars){var self = $$13.$$s == null ? this : $$13.$$s;
-
+              self.$emit("tUNARY_NUM", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
+              p = $rb_minus(p, 1);
+              self.cs = 810;
               
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(334, $ret_or_1)) {
               
-              if (chars == null) {
-                chars = nil;
-              };
-              return self.$emit("tRATIONAL", self.$Rational(chars));}, $$13.$$s = self, $$13.$$arity = 1, $$13));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            digits = self.$tok(self.num_digits_s, self.num_suffix_s);
-            if ($truthy(digits['$end_with?']("_".$freeze()))) {
-              self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
-            } else if ($truthy((function() {if ($truthy(($ret_or_94 = (function() {if ($truthy(($ret_or_95 = digits['$empty?']()))) {
-              return self.num_base['$=='](8)
-            } else {
-              return $ret_or_95
-            }; return nil; })()))) {
-              return self['$version?'](18)
-            } else {
-              return $ret_or_94
-            }; return nil; })())) {
-              digits = "0".$freeze()
-            } else if ($truthy(digits['$empty?']())) {
-              self.$diagnostic("error", "empty_numeric")
-            } else if ($truthy((function() {if ($truthy(($ret_or_96 = self.num_base['$=='](8)))) {
-              
-              return (invalid_idx = digits.$index(/[89]/));
-            } else {
-              return $ret_or_96
-            }; return nil; })())) {
+              self.te = $rb_plus(p, 1);
               
-              invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
-              self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));};
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              type = (delimiter = self.$tok()['$[]'](0).$chr());
+              p = $rb_minus(p, 1);
               
-              self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits.$to_i(self.num_base))
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((463)['$===']($case)) {
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$14 = function(chars){var self = $$14.$$s == null ? this : $$14.$$s;
-
+              self.cs = self.$push_literal(type, delimiter, self.ts);
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(326, $ret_or_1)) {
               
+              self.te = $rb_plus(p, 1);
               
-              if (chars == null) {
-                chars = nil;
-              };
-              return self.$emit("tIMAGINARY", self.$Complex(0, chars));}, $$14.$$s = self, $$14.$$arity = 1, $$14));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            digits = self.$tok(self.num_digits_s, self.num_suffix_s);
-            if ($truthy(digits['$end_with?']("_".$freeze()))) {
-              self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
-            } else if ($truthy((function() {if ($truthy(($ret_or_97 = (function() {if ($truthy(($ret_or_98 = digits['$empty?']()))) {
-              return self.num_base['$=='](8)
-            } else {
-              return $ret_or_98
-            }; return nil; })()))) {
-              return self['$version?'](18)
-            } else {
-              return $ret_or_97
-            }; return nil; })())) {
-              digits = "0".$freeze()
-            } else if ($truthy(digits['$empty?']())) {
-              self.$diagnostic("error", "empty_numeric")
-            } else if ($truthy((function() {if ($truthy(($ret_or_99 = self.num_base['$=='](8)))) {
-              
-              return (invalid_idx = digits.$index(/[89]/));
-            } else {
-              return $ret_or_99
-            }; return nil; })())) {
+              $b = [self.source_buffer.$slice(self.ts).$chr(), self.$tok()['$[]'](-1).$chr()], (type = $b[0]), (delimiter = $b[1]), $b;
               
-              invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
-              self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));};
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              self.cs = self.$push_literal(type, delimiter, self.ts);
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(55, $ret_or_1)) {
               
-              self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits.$to_i(self.num_base))
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((468)['$===']($case)) {
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$15 = function(chars){var self = $$15.$$s == null ? this : $$15.$$s;
-
+              self.te = $rb_plus(p, 1);
               
+              $b = [self.$tok()['$[]']($range(0, -2, false)), self.$tok()['$[]'](-1).$chr()], (type = $b[0]), (delimiter = $b[1]), $b;
               
-              if (chars == null) {
-                chars = nil;
-              };
-              return self.$emit("tIMAGINARY", self.$Complex(0, self.$Rational(chars)));}, $$15.$$s = self, $$15.$$arity = 1, $$15));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            digits = self.$tok(self.num_digits_s, self.num_suffix_s);
-            if ($truthy(digits['$end_with?']("_".$freeze()))) {
-              self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
-            } else if ($truthy((function() {if ($truthy(($ret_or_100 = (function() {if ($truthy(($ret_or_101 = digits['$empty?']()))) {
-              return self.num_base['$=='](8)
-            } else {
-              return $ret_or_101
-            }; return nil; })()))) {
-              return self['$version?'](18)
-            } else {
-              return $ret_or_100
-            }; return nil; })())) {
-              digits = "0".$freeze()
-            } else if ($truthy(digits['$empty?']())) {
-              self.$diagnostic("error", "empty_numeric")
-            } else if ($truthy((function() {if ($truthy(($ret_or_102 = self.num_base['$=='](8)))) {
-              
-              return (invalid_idx = digits.$index(/[89]/));
-            } else {
-              return $ret_or_102
-            }; return nil; })())) {
+              self.cs = self.$push_literal(type, delimiter, self.ts);
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(347, $ret_or_1)) {
               
-              invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
-              self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));};
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              self.te = $rb_plus(p, 1);
               
-              self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits.$to_i(self.num_base))
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((466)['$===']($case)) {
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$16 = function(chars){var self = $$16.$$s == null ? this : $$16.$$s;
-              if (self.ts == null) self.ts = nil;
-              if (self.te == null) self.te = nil;
-
+              p = $rb_minus(p, 1);
+              p = $rb_minus(p, 1);
+              self.$emit("tSYMBEG", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
               
+              self.cs = 352;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(335, $ret_or_1)) {
               
-              if (chars == null) {
-                chars = nil;
-              };
-              self.$emit("tINTEGER", chars, self.ts, $rb_minus(self.te, 2));
-              return (p = $rb_minus(p, 2));}, $$16.$$s = self, $$16.$$arity = 1, $$16));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            digits = self.$tok(self.num_digits_s, self.num_suffix_s);
-            if ($truthy(digits['$end_with?']("_".$freeze()))) {
-              self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
-            } else if ($truthy((function() {if ($truthy(($ret_or_103 = (function() {if ($truthy(($ret_or_104 = digits['$empty?']()))) {
-              return self.num_base['$=='](8)
-            } else {
-              return $ret_or_104
-            }; return nil; })()))) {
-              return self['$version?'](18)
-            } else {
-              return $ret_or_103
-            }; return nil; })())) {
-              digits = "0".$freeze()
-            } else if ($truthy(digits['$empty?']())) {
-              self.$diagnostic("error", "empty_numeric")
-            } else if ($truthy((function() {if ($truthy(($ret_or_105 = self.num_base['$=='](8)))) {
-              
-              return (invalid_idx = digits.$index(/[89]/));
-            } else {
-              return $ret_or_105
-            }; return nil; })())) {
+              self.te = $rb_plus(p, 1);
               
-              invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
-              self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));};
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              $b = [self.$tok(), self.$tok()['$[]'](-1).$chr()], (type = $b[0]), (delimiter = $b[1]), $b;
               
-              self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits.$to_i(self.num_base))
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((464)['$===']($case)) {
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$17 = function(chars){var self = $$17.$$s == null ? this : $$17.$$s;
-              if (self.ts == null) self.ts = nil;
-              if (self.te == null) self.te = nil;
-
+              self.cs = self.$push_literal(type, delimiter, self.ts);
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(346, $ret_or_1)) {
               
+              self.te = $rb_plus(p, 1);
               
-              if (chars == null) {
-                chars = nil;
-              };
-              self.$emit("tINTEGER", chars, self.ts, $rb_minus(self.te, 2));
-              return (p = $rb_minus(p, 2));}, $$17.$$s = self, $$17.$$arity = 1, $$17));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            digits = self.$tok(self.num_digits_s, self.num_suffix_s);
-            if ($truthy(digits['$end_with?']("_".$freeze()))) {
-              self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
-            } else if ($truthy((function() {if ($truthy(($ret_or_106 = (function() {if ($truthy(($ret_or_107 = digits['$empty?']()))) {
-              return self.num_base['$=='](8)
-            } else {
-              return $ret_or_107
-            }; return nil; })()))) {
-              return self['$version?'](18)
-            } else {
-              return $ret_or_106
-            }; return nil; })())) {
-              digits = "0".$freeze()
-            } else if ($truthy(digits['$empty?']())) {
-              self.$diagnostic("error", "empty_numeric")
-            } else if ($truthy((function() {if ($truthy(($ret_or_108 = self.num_base['$=='](8)))) {
-              
-              return (invalid_idx = digits.$index(/[89]/));
-            } else {
-              return $ret_or_108
-            }; return nil; })())) {
+              self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1), $rb_plus(self.ts, 2)));
+              self.cs = 810;
               
-              invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
-              self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));};
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(69, $ret_or_1)) {
               
-              self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits.$to_i(self.num_base))
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((467)['$===']($case)) {
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$18 = function(chars){var self = $$18.$$s == null ? this : $$18.$$s;
-              if (self.ts == null) self.ts = nil;
-              if (self.te == null) self.te = nil;
-
+              self.te = $rb_plus(p, 1);
               
+              self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1)), self.ts);
+              self.cs = 810;
               
-              if (chars == null) {
-                chars = nil;
-              };
-              self.$emit("tINTEGER", chars, self.ts, $rb_minus(self.te, 6));
-              return (p = $rb_minus(p, 6));}, $$18.$$s = self, $$18.$$arity = 1, $$18));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            digits = self.$tok(self.num_digits_s, self.num_suffix_s);
-            if ($truthy(digits['$end_with?']("_".$freeze()))) {
-              self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
-            } else if ($truthy((function() {if ($truthy(($ret_or_109 = (function() {if ($truthy(($ret_or_110 = digits['$empty?']()))) {
-              return self.num_base['$=='](8)
-            } else {
-              return $ret_or_110
-            }; return nil; })()))) {
-              return self['$version?'](18)
-            } else {
-              return $ret_or_109
-            }; return nil; })())) {
-              digits = "0".$freeze()
-            } else if ($truthy(digits['$empty?']())) {
-              self.$diagnostic("error", "empty_numeric")
-            } else if ($truthy((function() {if ($truthy(($ret_or_111 = self.num_base['$=='](8)))) {
-              
-              return (invalid_idx = digits.$index(/[89]/));
-            } else {
-              return $ret_or_111
-            }; return nil; })())) {
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(357, $ret_or_1)) {
               
-              invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
-              self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));};
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              self.te = $rb_plus(p, 1);
               
-              self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits.$to_i(self.num_base))
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((456)['$===']($case)) {
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$19 = function(chars){var self = $$19.$$s == null ? this : $$19.$$s;
-
+              escape = $hash2([" ", "\r", "\n", "\t", "\v", "\f"], {" ": "\\s", "\r": "\\r", "\n": "\\n", "\t": "\\t", "\v": "\\v", "\f": "\\f"})['$[]'](self.source_buffer.$slice($rb_plus(self.ts, 1)));
+              self.$diagnostic("warning", "invalid_escape_use", $hash2(["escape"], {"escape": escape}), self.$range());
+              p = $rb_minus(self.ts, 1);
               
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(356, $ret_or_1)) {
               
-              if (chars == null) {
-                chars = nil;
-              };
-              return self.$emit("tIMAGINARY", self.$Complex(0, self.$Float(chars)));}, $$19.$$s = self, $$19.$$arity = 1, $$19));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            digits = self.$tok(self.ts, self.num_suffix_s);
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              self.te = $rb_plus(p, 1);
               
-              self.$emit("tFLOAT", self.$Float(digits), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits)
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((457)['$===']($case)) {
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$20 = function(chars){var self = $$20.$$s == null ? this : $$20.$$s;
-              if (self.ts == null) self.ts = nil;
-              if (self.te == null) self.te = nil;
-
+              self.$diagnostic("fatal", "incomplete_escape", nil, self.$range(self.ts, $rb_plus(self.ts, 1)));;
+            } else if ($eqeqeq(336, $ret_or_1)) {
               
+              self.te = $rb_plus(p, 1);
               
-              if (chars == null) {
-                chars = nil;
-              };
-              self.$emit("tFLOAT", self.$Float(chars), self.ts, $rb_minus(self.te, 2));
-              return (p = $rb_minus(p, 2));}, $$20.$$s = self, $$20.$$arity = 1, $$20));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            digits = self.$tok(self.ts, self.num_suffix_s);
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              self.$emit_table($$('PUNCTUATION_BEGIN'));
               
-              self.$emit("tFLOAT", self.$Float(digits), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits)
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((458)['$===']($case)) {
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$21 = function(chars){var self = $$21.$$s == null ? this : $$21.$$s;
-
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(52, $ret_or_1)) {
               
+              self.te = $rb_plus(p, 1);
               
-              if (chars == null) {
-                chars = nil;
+              p = $rb_minus(p, 1);
+              if ($truthy(self['$version?'](18))) {
+                
+                ident = self.$tok(self.ts, $rb_minus(self.te, 2));
+                self.$emit(($truthy(self.source_buffer.$slice(self.ts)['$=~'](/[A-Z]/)) ? ("tCONSTANT") : ("tIDENTIFIER")), ident, self.ts, $rb_minus(self.te, 2));
+                p = $rb_minus(p, 1);
+                if (($not(self.static_env['$nil?']()) && ($truthy(self.static_env['$declared?'](ident))))) {
+                  self.cs = 810
+                } else {
+                  self.cs = self.$arg_or_cmdarg(cmd_state)
+                };
+              } else {
+                
+                self.$emit("tLABEL", self.$tok(self.ts, $rb_minus(self.te, 2)), self.ts, $rb_minus(self.te, 1));
+                self.cs = 795;
               };
-              return self.$emit("tRATIONAL", self.$Rational(chars));}, $$21.$$s = self, $$21.$$arity = 1, $$21));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            digits = self.$tok(self.ts, self.num_suffix_s);
-            if ($truthy(self['$version?'](18, 19, 20))) {
               
-              self.$emit("tFLOAT", self.$Float(digits), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits)
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((460)['$===']($case)) {
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$22 = function(chars){var self = $$22.$$s == null ? this : $$22.$$s;
-
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(49, $ret_or_1)) {
               
+              self.te = $rb_plus(p, 1);
               
-              if (chars == null) {
-                chars = nil;
+              self.$emit("tIDENTIFIER", ident_tok, ident_ts, ident_te);
+              p = $rb_minus(ident_te, 1);
+              if ((($not(self.static_env['$nil?']()) && ($truthy(self.static_env['$declared?'](ident_tok)))) && ($truthy($rb_lt(self.version, 25))))) {
+                self.cs = 465
+              } else {
+                self.cs = 525
               };
-              return self.$emit("tIMAGINARY", self.$Complex(0, self.$Rational(chars)));}, $$22.$$s = self, $$22.$$arity = 1, $$22));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            digits = self.$tok(self.ts, self.num_suffix_s);
-            if ($truthy(self['$version?'](18, 19, 20))) {
               
-              self.$emit("tFLOAT", self.$Float(digits), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits)
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((459)['$===']($case)) {
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$23 = function(chars){var self = $$23.$$s == null ? this : $$23.$$s;
-              if (self.ts == null) self.ts = nil;
-              if (self.te == null) self.te = nil;
-
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(320, $ret_or_1)) {
               
+              self.te = $rb_plus(p, 1);
               
-              if (chars == null) {
-                chars = nil;
-              };
-              self.$emit("tFLOAT", self.$Float(chars), self.ts, $rb_minus(self.te, 6));
-              return (p = $rb_minus(p, 6));}, $$23.$$s = self, $$23.$$arity = 1, $$23));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            digits = self.$tok(self.ts, self.num_suffix_s);
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              p = $rb_minus(self.ts, 1);
+              self.cs_before_block_comment = self.cs;
               
-              self.$emit("tFLOAT", self.$Float(digits), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits)
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((137)['$===']($case)) {
-            
-            self.escape = "";
-            codepoints = self.$tok($rb_plus(self.escape_s, 2), $rb_minus(p, 1));
-            codepoint_s = $rb_plus(self.escape_s, 2);
-            if ($truthy($rb_lt(self.version, 24))) {
+              self.cs = 186;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(56, $ret_or_1)) {
               
-              if ($truthy((function() {if ($truthy(($ret_or_112 = codepoints['$start_with?'](" ")))) {
-                return $ret_or_112
-              } else {
-                return codepoints['$start_with?']("\t")
-              }; return nil; })())) {
-                self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_plus(self.escape_s, 2), $rb_plus(self.escape_s, 3)))};
-              if ($truthy((spaces_p = codepoints.$index(/[ \t]{2}/)))) {
-                self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_plus($rb_plus(codepoint_s, spaces_p), 1), $rb_plus($rb_plus(codepoint_s, spaces_p), 2)))};
-              if ($truthy((function() {if ($truthy(($ret_or_113 = codepoints['$end_with?'](" ")))) {
-                return $ret_or_113
-              } else {
-                return codepoints['$end_with?']("\t")
-              }; return nil; })())) {
-                self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(p, 1), p))};};
-            (function(){var $brk = Opal.new_brk(); try {return $send(codepoints.$scan(/([0-9a-fA-F]+)|([ \t]+)/), 'each', [], ($$24 = function($mlhs_tmp1){var self = $$24.$$s == null ? this : $$24.$$s, $c, $d, codepoint_str = nil, spaces = nil, codepoint = nil;
-              if (self.escape == null) self.escape = nil;
-
+              self.te = $rb_plus(p, 1);
               
+              p = $rb_minus(self.ts, 1);
               
-              if ($mlhs_tmp1 == null) {
-                $mlhs_tmp1 = nil;
-              };
-              $d = $mlhs_tmp1, $c = Opal.to_ary($d), (codepoint_str = ($c[0] == null ? nil : $c[0])), (spaces = ($c[1] == null ? nil : $c[1])), $d;
-              if ($truthy(spaces)) {
-                return (codepoint_s = $rb_plus(codepoint_s, spaces.$length()))
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(304, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(330, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tUNARY_NUM", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
+              p = $rb_minus(p, 1);
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(329, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tSTAR", "*".$freeze());
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(325, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$diagnostic("fatal", "string_eof", nil, self.$range(self.ts, $rb_plus(self.ts, 1)));;
+            } else if ($eqeqeq(354, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$diagnostic("error", "unterminated_heredoc_id", nil, self.$range(self.ts, $rb_plus(self.ts, 1)));;
+            } else if ($eqeqeq(337, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1)), self.ts);
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(350, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              if ($truthy($rb_ge(self.version, 27))) {
+                self.$diagnostic("error", diag_msg, $hash2(["name"], {"name": self.$tok(tm, self.te)}), self.$range(tm, self.te))
               } else {
                 
-                codepoint = codepoint_str.$to_i(16);
-                if ($truthy($rb_ge(codepoint, 1114112))) {
-                  
-                  self.$diagnostic("error", "unicode_point_too_large", nil, self.$range(codepoint_s, $rb_plus(codepoint_s, codepoint_str.$length())));
-                  
-                  Opal.brk(nil, $brk);};
-                self.escape = $rb_plus(self.escape, codepoint.$chr($$$($$($nesting, 'Encoding'), 'UTF_8')));
-                return (codepoint_s = $rb_plus(codepoint_s, codepoint_str.$length()));
-              };}, $$24.$$s = self, $$24.$$brk = $brk, $$24.$$arity = 1, $$24.$$has_top_level_mlhs_arg = true, $$24))
-            } catch (err) { if (err === $brk) { return err.$v } else { throw err } }})();;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_114 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_114
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
-              } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_115 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_115
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_116 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_116
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_117 = (function() {if ($truthy(($ret_or_118 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_118
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_117
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_119 = self.escape))) {
-                return $ret_or_119
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((168)['$===']($case)) {
-            
-            self.escape = "";
-            codepoints = self.$tok($rb_plus(self.escape_s, 2), $rb_minus(p, 1));
-            codepoint_s = $rb_plus(self.escape_s, 2);
-            if ($truthy($rb_lt(self.version, 24))) {
-              
-              if ($truthy((function() {if ($truthy(($ret_or_120 = codepoints['$start_with?'](" ")))) {
-                return $ret_or_120
-              } else {
-                return codepoints['$start_with?']("\t")
-              }; return nil; })())) {
-                self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_plus(self.escape_s, 2), $rb_plus(self.escape_s, 3)))};
-              if ($truthy((spaces_p = codepoints.$index(/[ \t]{2}/)))) {
-                self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_plus($rb_plus(codepoint_s, spaces_p), 1), $rb_plus($rb_plus(codepoint_s, spaces_p), 2)))};
-              if ($truthy((function() {if ($truthy(($ret_or_121 = codepoints['$end_with?'](" ")))) {
-                return $ret_or_121
-              } else {
-                return codepoints['$end_with?']("\t")
-              }; return nil; })())) {
-                self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(p, 1), p))};};
-            (function(){var $brk = Opal.new_brk(); try {return $send(codepoints.$scan(/([0-9a-fA-F]+)|([ \t]+)/), 'each', [], ($$25 = function($mlhs_tmp1){var self = $$25.$$s == null ? this : $$25.$$s, $c, $d, codepoint_str = nil, spaces = nil, codepoint = nil;
-              if (self.escape == null) self.escape = nil;
-
+                self.$emit("tCOLON", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
+                p = self.ts;
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(355, $ret_or_1)) {
               
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              if ($mlhs_tmp1 == null) {
-                $mlhs_tmp1 = nil;
-              };
-              $d = $mlhs_tmp1, $c = Opal.to_ary($d), (codepoint_str = ($c[0] == null ? nil : $c[0])), (spaces = ($c[1] == null ? nil : $c[1])), $d;
-              if ($truthy(spaces)) {
-                return (codepoint_s = $rb_plus(codepoint_s, spaces.$length()))
+              self.$diagnostic("fatal", "incomplete_escape", nil, self.$range(self.ts, $rb_plus(self.ts, 1)));;
+            } else if ($eqeqeq(361, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(327, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit_table($$('PUNCTUATION_BEGIN'));
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(331, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              if ($truthy($rb_ge(self.version, 27))) {
+                self.$emit("tBDOT2")
               } else {
-                
-                codepoint = codepoint_str.$to_i(16);
-                if ($truthy($rb_ge(codepoint, 1114112))) {
-                  
-                  self.$diagnostic("error", "unicode_point_too_large", nil, self.$range(codepoint_s, $rb_plus(codepoint_s, codepoint_str.$length())));
+                self.$emit("tDOT2")
+              };
+              self.cs = 563;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(332, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              followed_by_nl = $rb_minus(self.te, 1)['$=='](self.newline_s);
+              nl_emitted = false;
+              dots_te = ($truthy(followed_by_nl) ? ($rb_minus(self.te, 1)) : (self.te));
+              if ($truthy($rb_ge(self.version, 30))) {
+                if (($truthy(self.lambda_stack['$any?']()) && ($eqeq($rb_plus(self.lambda_stack.$last(), 1), self.paren_nest)))) {
+                  self.$emit("tDOT3", "...".$freeze(), self.ts, dots_te)
+                } else {
                   
-                  Opal.brk(nil, $brk);};
-                self.escape = $rb_plus(self.escape, codepoint.$chr($$$($$($nesting, 'Encoding'), 'UTF_8')));
-                return (codepoint_s = $rb_plus(codepoint_s, codepoint_str.$length()));
-              };}, $$25.$$s = self, $$25.$$brk = $brk, $$25.$$arity = 1, $$25.$$has_top_level_mlhs_arg = true, $$25))
-            } catch (err) { if (err === $brk) { return err.$v } else { throw err } }})();;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_122 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_122
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
-              } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_123 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_123
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_124 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_124
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_125 = (function() {if ($truthy(($ret_or_126 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_126
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_125
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_127 = self.escape))) {
-                return $ret_or_127
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((382)['$===']($case)) {
-            
-            self.escape = "";
-            codepoints = self.$tok($rb_plus(self.escape_s, 2), $rb_minus(p, 1));
-            codepoint_s = $rb_plus(self.escape_s, 2);
-            if ($truthy($rb_lt(self.version, 24))) {
-              
-              if ($truthy((function() {if ($truthy(($ret_or_128 = codepoints['$start_with?'](" ")))) {
-                return $ret_or_128
-              } else {
-                return codepoints['$start_with?']("\t")
-              }; return nil; })())) {
-                self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_plus(self.escape_s, 2), $rb_plus(self.escape_s, 3)))};
-              if ($truthy((spaces_p = codepoints.$index(/[ \t]{2}/)))) {
-                self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_plus($rb_plus(codepoint_s, spaces_p), 1), $rb_plus($rb_plus(codepoint_s, spaces_p), 2)))};
-              if ($truthy((function() {if ($truthy(($ret_or_129 = codepoints['$end_with?'](" ")))) {
-                return $ret_or_129
+                  self.$emit("tBDOT3", "...".$freeze(), self.ts, dots_te);
+                  if ((($truthy($rb_ge(self.version, 31)) && ($truthy(followed_by_nl))) && ($truthy(self.context.$in_argdef())))) {
+                    
+                    self.$emit("tNL", $rb_minus(self.te, 1), self.te);
+                    nl_emitted = true;
+                  };
+                }
+              } else if ($truthy($rb_ge(self.version, 27))) {
+                self.$emit("tBDOT3", "...".$freeze(), self.ts, dots_te)
               } else {
-                return codepoints['$end_with?']("\t")
-              }; return nil; })())) {
-                self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(p, 1), p))};};
-            (function(){var $brk = Opal.new_brk(); try {return $send(codepoints.$scan(/([0-9a-fA-F]+)|([ \t]+)/), 'each', [], ($$26 = function($mlhs_tmp1){var self = $$26.$$s == null ? this : $$26.$$s, $c, $d, codepoint_str = nil, spaces = nil, codepoint = nil;
-              if (self.escape == null) self.escape = nil;
-
+                self.$emit("tDOT3", "...".$freeze(), self.ts, dots_te)
+              };
+              if (($truthy(followed_by_nl) && ($not(nl_emitted)))) {
+                p = $rb_minus(p, 1)
+              };
+              self.cs = 563;
               
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(307, $ret_or_1)) {
               
-              if ($mlhs_tmp1 == null) {
-                $mlhs_tmp1 = nil;
-              };
-              $d = $mlhs_tmp1, $c = Opal.to_ary($d), (codepoint_str = ($c[0] == null ? nil : $c[0])), (spaces = ($c[1] == null ? nil : $c[1])), $d;
-              if ($truthy(spaces)) {
-                return (codepoint_s = $rb_plus(codepoint_s, spaces.$length()))
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tIDENTIFIER");
+              if (($not(self.static_env['$nil?']()) && ($truthy(self.static_env['$declared?'](self.$tok()))))) {
+                
+                self.cs = 465;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
               } else {
                 
-                codepoint = codepoint_str.$to_i(16);
-                if ($truthy($rb_ge(codepoint, 1114112))) {
-                  
-                  self.$diagnostic("error", "unicode_point_too_large", nil, self.$range(codepoint_s, $rb_plus(codepoint_s, codepoint_str.$length())));
-                  
-                  Opal.brk(nil, $brk);};
-                self.escape = $rb_plus(self.escape, codepoint.$chr($$$($$($nesting, 'Encoding'), 'UTF_8')));
-                return (codepoint_s = $rb_plus(codepoint_s, codepoint_str.$length()));
-              };}, $$26.$$s = self, $$26.$$brk = $brk, $$26.$$arity = 1, $$26.$$has_top_level_mlhs_arg = true, $$26))
-            } catch (err) { if (err === $brk) { return err.$v } else { throw err } }})();;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_130 = self.escape))) {
-              return $ret_or_130
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((118)['$===']($case)) {
-            
-            codepoint = self.source_pts['$[]']($rb_minus(p, 1));
-            if ($truthy((function() {if ($truthy(($ret_or_131 = $rb_ge(self.version, 30)))) {
+                self.cs = self.$arg_or_cmdarg(cmd_state);
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              };;
+            } else if ($eqeqeq(317, $ret_or_1)) {
               
-              if ($truthy(($ret_or_132 = codepoint['$=='](117)))) {
-                return $ret_or_132
-              } else {
-                return codepoint['$=='](85)
-              };
-            } else {
-              return $ret_or_131
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};
-            if ($truthy((self.escape = $$($nesting, 'ESCAPES')['$[]'](codepoint))['$nil?']())) {
-              self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_133 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_133
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
-              } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_134 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_134
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_135 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_135
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_136 = (function() {if ($truthy(($ret_or_137 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_137
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_136
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_138 = self.escape))) {
-                return $ret_or_138
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((149)['$===']($case)) {
-            
-            codepoint = self.source_pts['$[]']($rb_minus(p, 1));
-            if ($truthy((function() {if ($truthy(($ret_or_139 = $rb_ge(self.version, 30)))) {
+              self.te = p;
+              p = $rb_minus(p, 1);
+            } else if ($eqeqeq(319, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              self.cs_before_block_comment = self.cs;
+              
+              self.cs = 186;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(322, $ret_or_1)) {
               
-              if ($truthy(($ret_or_140 = codepoint['$=='](117)))) {
-                return $ret_or_140
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(54, $ret_or_1)) {
+              
+              
+              p = $rb_minus(self.te, 1);;
+              
+              self.$diagnostic("fatal", "string_eof", nil, self.$range(self.ts, $rb_plus(self.ts, 1)));;
+            } else if ($eqeqeq(73, $ret_or_1)) {
+              
+              
+              p = $rb_minus(self.te, 1);;
+              
+              self.$diagnostic("error", "unterminated_heredoc_id", nil, self.$range(self.ts, $rb_plus(self.ts, 1)));;
+            } else if ($eqeqeq(74, $ret_or_1)) {
+              
+              
+              p = $rb_minus(self.te, 1);;
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
               } else {
-                return codepoint['$=='](85)
+                self.$emit("tCHARACTER", value)
               };
-            } else {
-              return $ret_or_139
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};
-            if ($truthy((self.escape = $$($nesting, 'ESCAPES')['$[]'](codepoint))['$nil?']())) {
-              self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_141 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_141
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
-              } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_142 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_142
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_143 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_143
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_144 = (function() {if ($truthy(($ret_or_145 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_145
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_144
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_146 = self.escape))) {
-                return $ret_or_146
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(48, $ret_or_1)) {
+              
+              
+              p = $rb_minus(self.te, 1);;
+              
+              self.$emit("tIDENTIFIER");
+              if (($not(self.static_env['$nil?']()) && ($truthy(self.static_env['$declared?'](self.$tok()))))) {
+                
+                self.cs = 465;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((363)['$===']($case)) {
-            
-            codepoint = self.source_pts['$[]']($rb_minus(p, 1));
-            if ($truthy((function() {if ($truthy(($ret_or_147 = $rb_ge(self.version, 30)))) {
+                
+                self.cs = self.$arg_or_cmdarg(cmd_state);
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              };;
+            } else if ($eqeqeq(53, $ret_or_1)) {
+              
+              
+              p = $rb_minus(self.te, 1);;
+            } else if ($eqeqeq(68, $ret_or_1)) {
+              
+              
+              p = $rb_minus(self.te, 1);;
               
-              if ($truthy(($ret_or_148 = codepoint['$=='](117)))) {
-                return $ret_or_148
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(51, $ret_or_1)) {
+              
+              if ($eqeqeq(99, ($ret_or_2 = self.act))) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit("tUNARY_NUM", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
+                p = $rb_minus(p, 1);
+                self.cs = 810;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(106, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$diagnostic("error", "unterminated_heredoc_id", nil, self.$range(self.ts, $rb_plus(self.ts, 1)));
+              } else if ($eqeqeq(117, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                if ($truthy($rb_ge(self.version, 27))) {
+                  
+                  self.$emit("tPIPE", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
+                  p = $rb_minus(p, 1);
+                  self.cs = 563;
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  p = $rb_minus(p, 2);
+                  
+                  self.cs = 810;
+                  _goto_level = _again;
+                  continue;;;
+                };
+              } else if ($eqeqeq(121, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('PUNCTUATION_BEGIN'));
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(122, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit("kRESCUE", "rescue".$freeze(), self.ts, tm);
+                p = $rb_minus(tm, 1);
+                self.cs = 539;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(123, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('KEYWORDS_BEGIN'));
+                self.command_start = true;
+                self.cs = 802;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(127, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                p = $rb_minus(self.ts, 1);
+                
+                self.cs = 810;
+                _goto_level = _again;
+                continue;;;
+              } else if ($eqeqeq(128, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit("tIDENTIFIER");
+                if (($not(self.static_env['$nil?']()) && ($truthy(self.static_env['$declared?'](self.$tok()))))) {
+                  
+                  self.cs = 465;
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  self.cs = self.$arg_or_cmdarg(cmd_state);
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+              } else if ($eqeqeq(132, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                p = $rb_minus(self.ts, 1);
+                
+                self.cs = 810;
+                _goto_level = _again;
+                continue;;;
               } else {
-                return codepoint['$=='](85)
+                nil
               };
-            } else {
-              return $ret_or_147
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};
-            if ($truthy((self.escape = $$($nesting, 'ESCAPES')['$[]'](codepoint))['$nil?']())) {
-              self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_149 = self.escape))) {
-              return $ret_or_149
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((121)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "invalid_escape");;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_150 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_150
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
-              } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_151 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_151
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_152 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_152
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_153 = (function() {if ($truthy(($ret_or_154 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_154
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_153
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_155 = self.escape))) {
-                return $ret_or_155
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((152)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "invalid_escape");;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_156 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_156
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
-              } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_157 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_157
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_158 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_158
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_159 = (function() {if ($truthy(($ret_or_160 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_160
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_159
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_161 = self.escape))) {
-                return $ret_or_161
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((366)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "invalid_escape");;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_162 = self.escape))) {
-              return $ret_or_162
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((123)['$===']($case)) {
-            
-            self.escape = "\u007F";;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_163 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_163
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
-              } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_164 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_164
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_165 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_165
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_166 = (function() {if ($truthy(($ret_or_167 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_167
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_166
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_168 = self.escape))) {
-                return $ret_or_168
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((154)['$===']($case)) {
-            
-            self.escape = "\u007F";;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_169 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_169
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
-              } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_170 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_170
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_171 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_171
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_172 = (function() {if ($truthy(($ret_or_173 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_173
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_172
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_174 = self.escape))) {
-                return $ret_or_174
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((368)['$===']($case)) {
-            
-            self.escape = "\u007F";;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_175 = self.escape))) {
-              return $ret_or_175
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((120)['$===']($case)) {
-            
-            self.escape = self.$encode_escape(self.$tok(self.escape_s, p).$to_i(8)['$%'](256));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_176 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_176
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
-              } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_177 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_177
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_178 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_178
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_179 = (function() {if ($truthy(($ret_or_180 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_180
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_179
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_181 = self.escape))) {
-                return $ret_or_181
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((151)['$===']($case)) {
-            
-            self.escape = self.$encode_escape(self.$tok(self.escape_s, p).$to_i(8)['$%'](256));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_182 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_182
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
-              } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_183 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_183
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_184 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_184
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_185 = (function() {if ($truthy(($ret_or_186 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_186
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_185
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_187 = self.escape))) {
-                return $ret_or_187
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((365)['$===']($case)) {
-            
-            self.escape = self.$encode_escape(self.$tok(self.escape_s, p).$to_i(8)['$%'](256));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_188 = self.escape))) {
-              return $ret_or_188
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((140)['$===']($case)) {
-            
-            self.escape = self.$encode_escape(self.$tok($rb_plus(self.escape_s, 1), p).$to_i(16));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_189 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_189
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
-              } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_190 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_190
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_191 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_191
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_192 = (function() {if ($truthy(($ret_or_193 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_193
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_192
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_194 = self.escape))) {
-                return $ret_or_194
+            } else if ($eqeqeq(395, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              self.cs = 563;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(396, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(397, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+            } else if ($eqeqeq(401, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              self.cs = 563;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(77, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(405, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              
+              self.cs = self.$push_literal(self.$tok(), self.$tok(), self.ts);
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(404, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              self.cs = 563;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(403, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(407, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+            } else if ($eqeqeq(406, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              self.cs = 563;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(76, $ret_or_1)) {
+              
+              
+              p = $rb_minus(self.te, 1);;
+              
+              p = $rb_minus(p, 1);
+              
+              self.cs = 563;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(440, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit("tLAMBDA", "->".$freeze(), self.ts, $rb_plus(self.ts, 2));
+              self.lambda_stack.$push(self.paren_nest);
+              self.cs = 465;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(86, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit("kCLASS", "class".$freeze(), self.ts, $rb_plus(self.ts, 5));
+              self.$emit("tLSHFT", "<<".$freeze(), $rb_minus(self.te, 2), self.te);
+              self.cs = 802;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(415, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              $b = [self.$tok(), self.$tok()['$[]'](-1).$chr()], (type = $b[0]), (delimiter = $b[1]), $b;
+              
+              self.cs = self.$push_literal(type, delimiter, self.ts, nil, false, false, true);
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(79, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              
+              
+              $writer = [self.top, self.cs];
+              $send(self.stack, '[]=', $to_a($writer));
+              $writer[$rb_minus($writer["length"], 1)];;
+              self.top = $rb_plus(self.top, 1);
+              self.cs = 347;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(436, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit_table($$('PUNCTUATION'));
+              self.cs = 473;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(489, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit_table($$('PUNCTUATION'));
+              self.cs = 802;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(429, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit_table($$('PUNCTUATION'));
+              self.cs = 802;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(434, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit("tOP_ASGN", self.$tok(self.ts, $rb_minus(self.te, 1)));
+              self.cs = 563;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(420, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit("tEH", "?".$freeze());
+              self.cs = 802;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(417, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit_table($$('PUNCTUATION'));
+              self.cs = 563;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(419, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit("tSEMI", ";".$freeze());
+              self.command_start = true;
+              self.cs = 802;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(494, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$diagnostic("error", "bare_backslash", nil, self.$range(self.ts, $rb_plus(self.ts, 1)));
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(414, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$diagnostic("fatal", "unexpected", $hash2(["character"], {"character": self.$tok().$inspect()['$[]']($range(1, -2, false))}));;
+            } else if ($eqeqeq(413, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(505, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit_table($$('KEYWORDS'));
+              self.cs = 352;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(503, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("kCLASS", "class".$freeze(), self.ts, $rb_plus(self.ts, 5));
+              self.$emit("tLSHFT", "<<".$freeze(), $rb_minus(self.te, 2), self.te);
+              self.cs = 802;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(502, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit_table($$('KEYWORDS'));
+              self.command_start = true;
+              self.cs = 802;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(444, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$diagnostic("error", "no_dot_digit_literal");;
+            } else if ($eqeqeq(491, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tCONSTANT");
+              self.cs = self.$arg_or_cmdarg(cmd_state);
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(433, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              
+              
+              $writer = [self.top, self.cs];
+              $send(self.stack, '[]=', $to_a($writer));
+              $writer[$rb_minus($writer["length"], 1)];;
+              self.top = $rb_plus(self.top, 1);
+              self.cs = 347;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(441, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit_table($$('PUNCTUATION'));
+              self.cs = 473;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(497, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tIDENTIFIER");
+              if (($not(self.static_env['$nil?']()) && ($truthy(self.static_env['$declared?'](self.$tok()))))) {
+                
+                self.cs = 465;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((171)['$===']($case)) {
-            
-            self.escape = self.$encode_escape(self.$tok($rb_plus(self.escape_s, 1), p).$to_i(16));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_195 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                
+                self.cs = self.$arg_or_cmdarg(cmd_state);
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              };;
+            } else if ($eqeqeq(439, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit_table($$('PUNCTUATION'));
+              self.cs = 802;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(435, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit_table($$('PUNCTUATION'));
+              self.cs = 802;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(428, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit_table($$('PUNCTUATION'));
+              self.cs = 563;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(442, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit_table($$('PUNCTUATION'));
+              self.cs = 563;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(426, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+            } else if ($eqeqeq(432, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$diagnostic("fatal", "unexpected", $hash2(["character"], {"character": self.$tok().$inspect()['$[]']($range(1, -2, false))}));;
+            } else if ($eqeqeq(84, $ret_or_1)) {
+              
+              
+              p = $rb_minus(self.te, 1);;
+              
+              digits = self.$tok(self.num_digits_s, self.num_suffix_s);
+              if ($truthy(digits['$end_with?']("_".$freeze()))) {
+                self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
+              } else if ((($truthy(digits['$empty?']()) && ($eqeq(self.num_base, 8))) && ($truthy(self['$version?'](18))))) {
+                digits = "0".$freeze()
+              } else if ($truthy(digits['$empty?']())) {
+                self.$diagnostic("error", "empty_numeric")
+              } else if (($eqeq(self.num_base, 8) && ($truthy((invalid_idx = digits.$index(/[89]/)))))) {
+                
+                invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
+                self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));
+              };
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
               } else {
-                return $ret_or_195
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                self.num_xfrm.$call(digits.$to_i(self.num_base))
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(80, $ret_or_1)) {
+              
+              
+              p = $rb_minus(self.te, 1);;
+              
+              self.$diagnostic("error", "no_dot_digit_literal");;
+            } else if ($eqeqeq(83, $ret_or_1)) {
+              
+              
+              p = $rb_minus(self.te, 1);;
+              
+              digits = self.$tok(self.ts, self.num_suffix_s);
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tFLOAT", self.$Float(digits), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_196 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_196
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_197 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_197
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_198 = (function() {if ($truthy(($ret_or_199 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_199
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_198
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_200 = self.escape))) {
-                return $ret_or_200
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((385)['$===']($case)) {
-            
-            self.escape = self.$encode_escape(self.$tok($rb_plus(self.escape_s, 1), p).$to_i(16));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_201 = self.escape))) {
-              return $ret_or_201
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((139)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "invalid_hex_escape", nil, self.$range($rb_minus(self.escape_s, 1), $rb_plus(p, 2)));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_202 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_202
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
-              } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_203 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_203
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_204 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_204
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_205 = (function() {if ($truthy(($ret_or_206 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_206
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_205
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_207 = self.escape))) {
-                return $ret_or_207
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((170)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "invalid_hex_escape", nil, self.$range($rb_minus(self.escape_s, 1), $rb_plus(p, 2)));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_208 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_208
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
-              } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_209 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_209
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_210 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_210
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_211 = (function() {if ($truthy(($ret_or_212 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_212
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_211
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_213 = self.escape))) {
-                return $ret_or_213
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((384)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "invalid_hex_escape", nil, self.$range($rb_minus(self.escape_s, 1), $rb_plus(p, 2)));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_214 = self.escape))) {
-              return $ret_or_214
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((134)['$===']($case)) {
-            
-            self.escape = self.$tok($rb_plus(self.escape_s, 1), p).$to_i(16).$chr($$$($$($nesting, 'Encoding'), 'UTF_8'));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_215 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_215
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
-              } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_216 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_216
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_217 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_217
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_218 = (function() {if ($truthy(($ret_or_219 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_219
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_218
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_220 = self.escape))) {
-                return $ret_or_220
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((165)['$===']($case)) {
-            
-            self.escape = self.$tok($rb_plus(self.escape_s, 1), p).$to_i(16).$chr($$$($$($nesting, 'Encoding'), 'UTF_8'));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_221 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                self.num_xfrm.$call(digits)
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(78, $ret_or_1)) {
+              
+              
+              p = $rb_minus(self.te, 1);;
+              
+              self.$diagnostic("fatal", "unexpected", $hash2(["character"], {"character": self.$tok().$inspect()['$[]']($range(1, -2, false))}));;
+            } else if ($eqeqeq(81, $ret_or_1)) {
+              
+              if ($eqeqeq(145, ($ret_or_2 = self.act))) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                if ($eqeq(self.lambda_stack.$last(), self.paren_nest)) {
+                  
+                  self.lambda_stack.$pop();
+                  if ($eqeq(self.$tok(), "{".$freeze())) {
+                    self.$emit("tLAMBEG", "{".$freeze())
+                  } else {
+                    self.$emit("kDO_LAMBDA", "do".$freeze())
+                  };
+                } else if ($eqeq(self.$tok(), "{".$freeze())) {
+                  self.$emit("tLCURLY", "{".$freeze())
+                } else {
+                  self.$emit_do()
+                };
+                if ($eqeq(self.$tok(), "{".$freeze())) {
+                  self.paren_nest = $rb_plus(self.paren_nest, 1)
+                };
+                self.command_start = true;
+                self.cs = 802;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(146, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('KEYWORDS'));
+                self.cs = 352;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(147, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit("kCLASS", "class".$freeze(), self.ts, $rb_plus(self.ts, 5));
+                self.$emit("tLSHFT", "<<".$freeze(), $rb_minus(self.te, 2), self.te);
+                self.cs = 802;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(148, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('KEYWORDS'));
+                self.cs = 563;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(149, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('KEYWORDS'));
+                self.command_start = true;
+                self.cs = 802;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(150, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('KEYWORDS'));
+                self.cs = 539;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(151, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('KEYWORDS'));
+                if (($truthy(self['$version?'](18)) && ($eqeq(self.$tok(), "not".$freeze())))) {
+                  
+                  self.cs = 563;
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  self.cs = 494;
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+              } else if ($eqeqeq(152, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                if ($truthy(self['$version?'](18))) {
+                  
+                  self.$emit("tIDENTIFIER");
+                  if (!($not(self.static_env['$nil?']()) && ($truthy(self.static_env['$declared?'](self.$tok()))))) {
+                    self.cs = self.$arg_or_cmdarg(cmd_state)
+                  };
+                } else {
+                  self.$emit("k__ENCODING__", "__ENCODING__".$freeze())
+                };
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(153, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('KEYWORDS'));
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(154, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                digits = self.$tok(self.num_digits_s, self.num_suffix_s);
+                if ($truthy(digits['$end_with?']("_".$freeze()))) {
+                  self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
+                } else if ((($truthy(digits['$empty?']()) && ($eqeq(self.num_base, 8))) && ($truthy(self['$version?'](18))))) {
+                  digits = "0".$freeze()
+                } else if ($truthy(digits['$empty?']())) {
+                  self.$diagnostic("error", "empty_numeric")
+                } else if (($eqeq(self.num_base, 8) && ($truthy((invalid_idx = digits.$index(/[89]/)))))) {
+                  
+                  invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
+                  self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));
+                };
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  
+                  self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
+                  p = $rb_minus(self.num_suffix_s, 1);
+                } else {
+                  self.num_xfrm.$call(digits.$to_i(self.num_base))
+                };
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(156, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": self.$tok($rb_minus(self.te, 1), self.te)}), self.$range($rb_minus(self.te, 1), self.te))
+                } else {
+                  
+                  self.$emit("tINTEGER", self.$tok(self.ts, $rb_minus(self.te, 1)).$to_i(), self.ts, $rb_minus(self.te, 1));
+                  p = $rb_minus(p, 1);
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+              } else if ($eqeqeq(157, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": self.$tok($rb_minus(self.te, 1), self.te)}), self.$range($rb_minus(self.te, 1), self.te))
+                } else {
+                  
+                  self.$emit("tFLOAT", self.$tok(self.ts, $rb_minus(self.te, 1)).$to_f(), self.ts, $rb_minus(self.te, 1));
+                  p = $rb_minus(p, 1);
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+              } else if ($eqeqeq(158, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                digits = self.$tok(self.ts, self.num_suffix_s);
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  
+                  self.$emit("tFLOAT", self.$Float(digits), self.ts, self.num_suffix_s);
+                  p = $rb_minus(self.num_suffix_s, 1);
+                } else {
+                  self.num_xfrm.$call(digits)
+                };
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(160, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit("tCONSTANT");
+                self.cs = self.$arg_or_cmdarg(cmd_state);
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(164, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit("tIDENTIFIER");
+                if (($not(self.static_env['$nil?']()) && ($truthy(self.static_env['$declared?'](self.$tok()))))) {
+                  
+                  self.cs = 465;
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  self.cs = self.$arg_or_cmdarg(cmd_state);
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+              } else if ($eqeqeq(165, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                if ($eqeq(tm, self.te)) {
+                  self.$emit("tFID")
+                } else {
+                  
+                  self.$emit("tIDENTIFIER", self.$tok(self.ts, tm), self.ts, tm);
+                  p = $rb_minus(tm, 1);
+                };
+                self.cs = 494;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(167, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('PUNCTUATION'));
+                self.cs = 802;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(168, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('PUNCTUATION'));
+                self.cs = 563;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
               } else {
-                return $ret_or_221
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                nil
+              };
+            } else if ($eqeqeq(516, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit("tNL", nil, self.newline_s, $rb_plus(self.newline_s, 1));
+              if ($truthy($rb_lt(self.version, 27))) {
+                
+                p = $rb_minus(p, 1);
+                self.cs = 186;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_222 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_222
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_223 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_223
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_224 = (function() {if ($truthy(($ret_or_225 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_225
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_224
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_226 = self.escape))) {
-                return $ret_or_226
+                
+                self.$emit("tBDOT3");
+                self.cs = 563;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              };;
+            } else if ($eqeqeq(95, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(tm, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(510, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit("tNL", nil, self.newline_s, $rb_plus(self.newline_s, 1));
+              p = $rb_minus(p, 1);
+              self.cs = 186;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(513, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              if ($truthy($rb_lt(self.version, 27))) {
+                
+                self.$emit("tNL", nil, self.newline_s, $rb_plus(self.newline_s, 1));
+                p = $rb_minus(p, 1);
+                self.cs = 186;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              };;
+            } else if ($eqeqeq(515, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tNL", nil, self.newline_s, $rb_plus(self.newline_s, 1));
+              if ($truthy($rb_lt(self.version, 27))) {
+                
+                p = $rb_minus(p, 1);
+                self.cs = 186;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((379)['$===']($case)) {
-            
-            self.escape = self.$tok($rb_plus(self.escape_s, 1), p).$to_i(16).$chr($$$($$($nesting, 'Encoding'), 'UTF_8'));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_227 = self.escape))) {
-              return $ret_or_227
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((133)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(self.escape_s, 1), p));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_228 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                
+                self.$emit("tBDOT2");
+                self.cs = 563;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              };;
+            } else if ($eqeqeq(514, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(tm, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(512, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tNL", nil, self.newline_s, $rb_plus(self.newline_s, 1));
+              p = $rb_minus(p, 1);
+              self.cs = 186;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(90, $ret_or_1)) {
+              
+              
+              p = $rb_minus(self.te, 1);;
+              
+              if ($truthy($rb_lt(self.version, 27))) {
+                
+                self.$emit("tNL", nil, self.newline_s, $rb_plus(self.newline_s, 1));
+                p = $rb_minus(p, 1);
+                self.cs = 186;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              };;
+            } else if ($eqeqeq(87, $ret_or_1)) {
+              
+              
+              p = $rb_minus(self.te, 1);;
+              
+              self.$emit("tNL", nil, self.newline_s, $rb_plus(self.newline_s, 1));
+              p = $rb_minus(p, 1);
+              self.cs = 186;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(91, $ret_or_1)) {
+              
+              if ($eqeqeq(181, ($ret_or_2 = self.act))) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                if ($truthy($rb_lt(self.version, 27))) {
+                  
+                  self.$emit("tNL", nil, self.newline_s, $rb_plus(self.newline_s, 1));
+                  p = $rb_minus(p, 1);
+                  self.cs = 186;
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+              } else if ($eqeqeq(185, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit("tNL", nil, self.newline_s, $rb_plus(self.newline_s, 1));
+                p = $rb_minus(p, 1);
+                self.cs = 186;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
               } else {
-                return $ret_or_228
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                nil
+              };
+            } else if ($eqeqeq(519, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit_comment(self.eq_begin_s, self.te);
+              
+              self.cs = self.cs_before_block_comment;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(518, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$diagnostic("fatal", "embedded_document", nil, self.$range(self.eq_begin_s, $rb_plus(self.eq_begin_s, "=begin".$length())));;
+            } else if ($eqeqeq(106, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.eq_begin_s = self.ts;
+              
+              self.cs = 998;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(2, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(pe, 3);;
+            } else if ($eqeqeq(98, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              cmd_state = true;
+              p = $rb_minus(p, 1);
+              
+              self.cs = 802;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(99, $ret_or_1)) {
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;
+            } else if ($eqeqeq(100, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+            } else if ($eqeqeq(105, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.eq_begin_s = self.ts;
+              
+              self.cs = 998;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(104, $ret_or_1)) {
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              cmd_state = true;
+              p = $rb_minus(p, 1);
+              
+              self.cs = 802;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(1, $ret_or_1)) {
+              
+              
+              p = $rb_minus(self.te, 1);;
+              
+              cmd_state = true;
+              p = $rb_minus(p, 1);
+              
+              self.cs = 802;
+              _goto_level = _again;
+              continue;;;;
+            } else if ($eqeqeq(67, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+            } else if ($eqeqeq(110, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              current_literal = self.$literal();
+              if ($eqeq(self.te, pe)) {
+                self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))
+              };
+              if ($truthy(current_literal['$heredoc?']())) {
+                
+                line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  line = line.$gsub(/\r.*$/, "".$freeze())
+                };
+                if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+                  
+                  self.herebody_s = self.te;
+                  p = $rb_minus(current_literal.$heredoc_e(), 1);
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  current_literal.$infer_indent_level(line);
+                  self.herebody_s = self.te;
+                };
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_229 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_229
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_230 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_230
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_231 = (function() {if ($truthy(($ret_or_232 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_232
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_231
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_233 = self.escape))) {
-                return $ret_or_233
+                
+                if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+                  
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+                if ($truthy(self.herebody_s)) {
+                  
+                  p = $rb_minus(self.herebody_s, 1);
+                  self.herebody_s = nil;
+                };
+              };
+              if (($truthy(current_literal['$words?']()) && ($not(self['$eof_codepoint?'](self.source_pts['$[]'](p)))))) {
+                current_literal.$extend_space(self.ts, self.te)
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((164)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(self.escape_s, 1), p));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_234 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                
+                current_literal.$extend_string(self.$tok(), self.ts, self.te);
+                current_literal.$flush_string();
+              };;;
+            } else if ($eqeqeq(143, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              current_literal = self.$literal();
+              if ($eqeq(self.te, pe)) {
+                self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))
+              };
+              if ($truthy(current_literal['$heredoc?']())) {
+                
+                line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  line = line.$gsub(/\r.*$/, "".$freeze())
+                };
+                if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+                  
+                  self.herebody_s = self.te;
+                  p = $rb_minus(current_literal.$heredoc_e(), 1);
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  current_literal.$infer_indent_level(line);
+                  self.herebody_s = self.te;
+                };
               } else {
-                return $ret_or_234
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                
+                if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+                  
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+                if ($truthy(self.herebody_s)) {
+                  
+                  p = $rb_minus(self.herebody_s, 1);
+                  self.herebody_s = nil;
+                };
+              };
+              if (($truthy(current_literal['$words?']()) && ($not(self['$eof_codepoint?'](self.source_pts['$[]'](p)))))) {
+                current_literal.$extend_space(self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_235 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_235
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_236 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_236
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_237 = (function() {if ($truthy(($ret_or_238 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_238
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_237
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_239 = self.escape))) {
-                return $ret_or_239
+                
+                current_literal.$extend_string(self.$tok(), self.ts, self.te);
+                current_literal.$flush_string();
+              };;;
+            } else if ($eqeqeq(174, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              current_literal = self.$literal();
+              if ($eqeq(self.te, pe)) {
+                self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))
+              };
+              if ($truthy(current_literal['$heredoc?']())) {
+                
+                line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  line = line.$gsub(/\r.*$/, "".$freeze())
+                };
+                if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+                  
+                  self.herebody_s = self.te;
+                  p = $rb_minus(current_literal.$heredoc_e(), 1);
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  current_literal.$infer_indent_level(line);
+                  self.herebody_s = self.te;
+                };
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((378)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(self.escape_s, 1), p));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_240 = self.escape))) {
-              return $ret_or_240
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((138)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(self.escape_s, 1), p));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_241 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                
+                if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+                  
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+                if ($truthy(self.herebody_s)) {
+                  
+                  p = $rb_minus(self.herebody_s, 1);
+                  self.herebody_s = nil;
+                };
+              };
+              if (($truthy(current_literal['$words?']()) && ($not(self['$eof_codepoint?'](self.source_pts['$[]'](p)))))) {
+                current_literal.$extend_space(self.ts, self.te)
               } else {
-                return $ret_or_241
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                
+                current_literal.$extend_string(self.$tok(), self.ts, self.te);
+                current_literal.$flush_string();
+              };;;
+            } else if ($eqeqeq(180, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              current_literal = self.$literal();
+              if ($eqeq(self.te, pe)) {
+                self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))
+              };
+              if ($truthy(current_literal['$heredoc?']())) {
+                
+                line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  line = line.$gsub(/\r.*$/, "".$freeze())
+                };
+                if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+                  
+                  self.herebody_s = self.te;
+                  p = $rb_minus(current_literal.$heredoc_e(), 1);
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  current_literal.$infer_indent_level(line);
+                  self.herebody_s = self.te;
+                };
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_242 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_242
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_243 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_243
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_244 = (function() {if ($truthy(($ret_or_245 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_245
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_244
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_246 = self.escape))) {
-                return $ret_or_246
+                
+                if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+                  
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+                if ($truthy(self.herebody_s)) {
+                  
+                  p = $rb_minus(self.herebody_s, 1);
+                  self.herebody_s = nil;
+                };
+              };
+              if (($truthy(current_literal['$words?']()) && ($not(self['$eof_codepoint?'](self.source_pts['$[]'](p)))))) {
+                current_literal.$extend_space(self.ts, self.te)
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((169)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(self.escape_s, 1), p));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_247 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                
+                current_literal.$extend_string(self.$tok(), self.ts, self.te);
+                current_literal.$flush_string();
+              };;;
+            } else if ($eqeqeq(186, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              current_literal = self.$literal();
+              if ($eqeq(self.te, pe)) {
+                self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))
+              };
+              if ($truthy(current_literal['$heredoc?']())) {
+                
+                line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  line = line.$gsub(/\r.*$/, "".$freeze())
+                };
+                if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+                  
+                  self.herebody_s = self.te;
+                  p = $rb_minus(current_literal.$heredoc_e(), 1);
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  current_literal.$infer_indent_level(line);
+                  self.herebody_s = self.te;
+                };
               } else {
-                return $ret_or_247
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                
+                if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+                  
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+                if ($truthy(self.herebody_s)) {
+                  
+                  p = $rb_minus(self.herebody_s, 1);
+                  self.herebody_s = nil;
+                };
+              };
+              if (($truthy(current_literal['$words?']()) && ($not(self['$eof_codepoint?'](self.source_pts['$[]'](p)))))) {
+                current_literal.$extend_space(self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_248 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_248
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_249 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_249
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_250 = (function() {if ($truthy(($ret_or_251 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_251
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_250
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_252 = self.escape))) {
-                return $ret_or_252
+                
+                current_literal.$extend_string(self.$tok(), self.ts, self.te);
+                current_literal.$flush_string();
+              };;;
+            } else if ($eqeqeq(193, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              current_literal = self.$literal();
+              if ($eqeq(self.te, pe)) {
+                self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))
+              };
+              if ($truthy(current_literal['$heredoc?']())) {
+                
+                line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  line = line.$gsub(/\r.*$/, "".$freeze())
+                };
+                if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+                  
+                  self.herebody_s = self.te;
+                  p = $rb_minus(current_literal.$heredoc_e(), 1);
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  current_literal.$infer_indent_level(line);
+                  self.herebody_s = self.te;
+                };
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((383)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(self.escape_s, 1), p));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_253 = self.escape))) {
-              return $ret_or_253
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((135)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "unterminated_unicode", nil, self.$range($rb_minus(p, 1), p));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_254 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                
+                if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+                  
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+                if ($truthy(self.herebody_s)) {
+                  
+                  p = $rb_minus(self.herebody_s, 1);
+                  self.herebody_s = nil;
+                };
+              };
+              if (($truthy(current_literal['$words?']()) && ($not(self['$eof_codepoint?'](self.source_pts['$[]'](p)))))) {
+                current_literal.$extend_space(self.ts, self.te)
               } else {
-                return $ret_or_254
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                
+                current_literal.$extend_string(self.$tok(), self.ts, self.te);
+                current_literal.$flush_string();
+              };;;
+            } else if ($eqeqeq(196, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              current_literal = self.$literal();
+              if ($eqeq(self.te, pe)) {
+                self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))
+              };
+              if ($truthy(current_literal['$heredoc?']())) {
+                
+                line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  line = line.$gsub(/\r.*$/, "".$freeze())
+                };
+                if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+                  
+                  self.herebody_s = self.te;
+                  p = $rb_minus(current_literal.$heredoc_e(), 1);
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  current_literal.$infer_indent_level(line);
+                  self.herebody_s = self.te;
+                };
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_255 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_255
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_256 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_256
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_257 = (function() {if ($truthy(($ret_or_258 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_258
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_257
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_259 = self.escape))) {
-                return $ret_or_259
+                
+                if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+                  
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+                if ($truthy(self.herebody_s)) {
+                  
+                  p = $rb_minus(self.herebody_s, 1);
+                  self.herebody_s = nil;
+                };
+              };
+              if (($truthy(current_literal['$words?']()) && ($not(self['$eof_codepoint?'](self.source_pts['$[]'](p)))))) {
+                current_literal.$extend_space(self.ts, self.te)
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((166)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "unterminated_unicode", nil, self.$range($rb_minus(p, 1), p));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_260 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                
+                current_literal.$extend_string(self.$tok(), self.ts, self.te);
+                current_literal.$flush_string();
+              };;;
+            } else if ($eqeqeq(204, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              current_literal = self.$literal();
+              if ($eqeq(self.te, pe)) {
+                self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))
+              };
+              if ($truthy(current_literal['$heredoc?']())) {
+                
+                line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  line = line.$gsub(/\r.*$/, "".$freeze())
+                };
+                if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+                  
+                  self.herebody_s = self.te;
+                  p = $rb_minus(current_literal.$heredoc_e(), 1);
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  current_literal.$infer_indent_level(line);
+                  self.herebody_s = self.te;
+                };
               } else {
-                return $ret_or_260
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                
+                if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+                  
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+                if ($truthy(self.herebody_s)) {
+                  
+                  p = $rb_minus(self.herebody_s, 1);
+                  self.herebody_s = nil;
+                };
+              };
+              if (($truthy(current_literal['$words?']()) && ($not(self['$eof_codepoint?'](self.source_pts['$[]'](p)))))) {
+                current_literal.$extend_space(self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_261 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_261
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_262 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_262
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_263 = (function() {if ($truthy(($ret_or_264 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_264
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_263
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_265 = self.escape))) {
-                return $ret_or_265
+                
+                current_literal.$extend_string(self.$tok(), self.ts, self.te);
+                current_literal.$flush_string();
+              };;;
+            } else if ($eqeqeq(275, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;;
+            } else if ($eqeqeq(266, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(tm, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;;
+            } else if ($eqeqeq(258, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;;
+            } else if ($eqeqeq(358, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              escape = $hash2([" ", "\r", "\n", "\t", "\v", "\f"], {" ": "\\s", "\r": "\\r", "\n": "\\n", "\t": "\\t", "\v": "\\v", "\f": "\\f"})['$[]'](self.source_buffer.$slice($rb_plus(self.ts, 1)));
+              self.$diagnostic("warning", "invalid_escape_use", $hash2(["escape"], {"escape": escape}), self.$range());
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;;
+            } else if ($eqeqeq(333, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              followed_by_nl = $rb_minus(self.te, 1)['$=='](self.newline_s);
+              nl_emitted = false;
+              dots_te = ($truthy(followed_by_nl) ? ($rb_minus(self.te, 1)) : (self.te));
+              if ($truthy($rb_ge(self.version, 30))) {
+                if (($truthy(self.lambda_stack['$any?']()) && ($eqeq($rb_plus(self.lambda_stack.$last(), 1), self.paren_nest)))) {
+                  self.$emit("tDOT3", "...".$freeze(), self.ts, dots_te)
+                } else {
+                  
+                  self.$emit("tBDOT3", "...".$freeze(), self.ts, dots_te);
+                  if ((($truthy($rb_ge(self.version, 31)) && ($truthy(followed_by_nl))) && ($truthy(self.context.$in_argdef())))) {
+                    
+                    self.$emit("tNL", $rb_minus(self.te, 1), self.te);
+                    nl_emitted = true;
+                  };
+                }
+              } else if ($truthy($rb_ge(self.version, 27))) {
+                self.$emit("tBDOT3", "...".$freeze(), self.ts, dots_te)
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((380)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "unterminated_unicode", nil, self.$range($rb_minus(p, 1), p));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_266 = self.escape))) {
-              return $ret_or_266
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((119)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "escape_eof", nil, self.$range($rb_minus(p, 1), p));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_267 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                self.$emit("tDOT3", "...".$freeze(), self.ts, dots_te)
+              };
+              if (($truthy(followed_by_nl) && ($not(nl_emitted)))) {
+                p = $rb_minus(p, 1)
+              };
+              self.cs = 563;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(321, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              self.cs_before_block_comment = self.cs;
+              
+              self.cs = 186;
+              _goto_level = _again;
+              continue;;;;;
+            } else if ($eqeqeq(443, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              if ($eqeq(self.paren_nest, 0)) {
+                self.$diagnostic("warning", "triple_dot_at_eol", nil, self.$range(self.ts, $rb_minus(self.te, 1)))
+              };
+              self.$emit("tDOT3", "...".$freeze(), self.ts, $rb_minus(self.te, 1));
+              p = $rb_minus(p, 1);
+              self.cs = 563;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(520, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit_comment(self.eq_begin_s, self.te);
+              
+              self.cs = self.cs_before_block_comment;
+              _goto_level = _again;
+              continue;;;;;
+            } else if ($eqeqeq(517, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.te = $rb_plus(p, 1);;
+            } else if ($eqeqeq(107, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.eq_begin_s = self.ts;
+              
+              self.cs = 998;
+              _goto_level = _again;
+              continue;;;;;
+            } else if ($eqeqeq(3, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(pe, 3);;;
+            } else if ($eqeqeq(465, $ret_or_1)) {
+              
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$3(chars){var self = $$3.$$s == null ? this : $$3.$$s;
+
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tRATIONAL", self.$Rational(chars));}, {$$arity: 1, $$s: self});;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              digits = self.$tok(self.num_digits_s, self.num_suffix_s);
+              if ($truthy(digits['$end_with?']("_".$freeze()))) {
+                self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
+              } else if ((($truthy(digits['$empty?']()) && ($eqeq(self.num_base, 8))) && ($truthy(self['$version?'](18))))) {
+                digits = "0".$freeze()
+              } else if ($truthy(digits['$empty?']())) {
+                self.$diagnostic("error", "empty_numeric")
+              } else if (($eqeq(self.num_base, 8) && ($truthy((invalid_idx = digits.$index(/[89]/)))))) {
+                
+                invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
+                self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));
+              };
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
               } else {
-                return $ret_or_267
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                self.num_xfrm.$call(digits.$to_i(self.num_base))
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(463, $ret_or_1)) {
+              
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$4(chars){var self = $$4.$$s == null ? this : $$4.$$s;
+
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tIMAGINARY", self.$Complex(0, chars));}, {$$arity: 1, $$s: self});;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              digits = self.$tok(self.num_digits_s, self.num_suffix_s);
+              if ($truthy(digits['$end_with?']("_".$freeze()))) {
+                self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
+              } else if ((($truthy(digits['$empty?']()) && ($eqeq(self.num_base, 8))) && ($truthy(self['$version?'](18))))) {
+                digits = "0".$freeze()
+              } else if ($truthy(digits['$empty?']())) {
+                self.$diagnostic("error", "empty_numeric")
+              } else if (($eqeq(self.num_base, 8) && ($truthy((invalid_idx = digits.$index(/[89]/)))))) {
+                
+                invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
+                self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));
+              };
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_268 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_268
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_269 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_269
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_270 = (function() {if ($truthy(($ret_or_271 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_271
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_270
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_272 = self.escape))) {
-                return $ret_or_272
+                self.num_xfrm.$call(digits.$to_i(self.num_base))
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(468, $ret_or_1)) {
+              
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$5(chars){var self = $$5.$$s == null ? this : $$5.$$s;
+
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tIMAGINARY", self.$Complex(0, self.$Rational(chars)));}, {$$arity: 1, $$s: self});;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              digits = self.$tok(self.num_digits_s, self.num_suffix_s);
+              if ($truthy(digits['$end_with?']("_".$freeze()))) {
+                self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
+              } else if ((($truthy(digits['$empty?']()) && ($eqeq(self.num_base, 8))) && ($truthy(self['$version?'](18))))) {
+                digits = "0".$freeze()
+              } else if ($truthy(digits['$empty?']())) {
+                self.$diagnostic("error", "empty_numeric")
+              } else if (($eqeq(self.num_base, 8) && ($truthy((invalid_idx = digits.$index(/[89]/)))))) {
+                
+                invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
+                self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));
+              };
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((150)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "escape_eof", nil, self.$range($rb_minus(p, 1), p));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_273 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                self.num_xfrm.$call(digits.$to_i(self.num_base))
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(466, $ret_or_1)) {
+              
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$6(chars){var self = $$6.$$s == null ? this : $$6.$$s;
+                if (self.ts == null) self.ts = nil;
+                if (self.te == null) self.te = nil;
+
+                
+                
+                if (chars == null) chars = nil;;
+                self.$emit("tINTEGER", chars, self.ts, $rb_minus(self.te, 2));
+                return (p = $rb_minus(p, 2));}, {$$arity: 1, $$s: self});;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              digits = self.$tok(self.num_digits_s, self.num_suffix_s);
+              if ($truthy(digits['$end_with?']("_".$freeze()))) {
+                self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
+              } else if ((($truthy(digits['$empty?']()) && ($eqeq(self.num_base, 8))) && ($truthy(self['$version?'](18))))) {
+                digits = "0".$freeze()
+              } else if ($truthy(digits['$empty?']())) {
+                self.$diagnostic("error", "empty_numeric")
+              } else if (($eqeq(self.num_base, 8) && ($truthy((invalid_idx = digits.$index(/[89]/)))))) {
+                
+                invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
+                self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));
+              };
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
               } else {
-                return $ret_or_273
-              }; return nil; })())) {
+                self.num_xfrm.$call(digits.$to_i(self.num_base))
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(464, $ret_or_1)) {
+              
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$7(chars){var self = $$7.$$s == null ? this : $$7.$$s;
+                if (self.ts == null) self.ts = nil;
+                if (self.te == null) self.te = nil;
+
+                
+                
+                if (chars == null) chars = nil;;
+                self.$emit("tINTEGER", chars, self.ts, $rb_minus(self.te, 2));
+                return (p = $rb_minus(p, 2));}, {$$arity: 1, $$s: self});;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              digits = self.$tok(self.num_digits_s, self.num_suffix_s);
+              if ($truthy(digits['$end_with?']("_".$freeze()))) {
+                self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
+              } else if ((($truthy(digits['$empty?']()) && ($eqeq(self.num_base, 8))) && ($truthy(self['$version?'](18))))) {
+                digits = "0".$freeze()
+              } else if ($truthy(digits['$empty?']())) {
+                self.$diagnostic("error", "empty_numeric")
+              } else if (($eqeq(self.num_base, 8) && ($truthy((invalid_idx = digits.$index(/[89]/)))))) {
+                
+                invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
+                self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));
+              };
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
+              } else {
+                self.num_xfrm.$call(digits.$to_i(self.num_base))
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(467, $ret_or_1)) {
+              
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$8(chars){var self = $$8.$$s == null ? this : $$8.$$s;
+                if (self.ts == null) self.ts = nil;
+                if (self.te == null) self.te = nil;
+
+                
+                
+                if (chars == null) chars = nil;;
+                self.$emit("tINTEGER", chars, self.ts, $rb_minus(self.te, 6));
+                return (p = $rb_minus(p, 6));}, {$$arity: 1, $$s: self});;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              digits = self.$tok(self.num_digits_s, self.num_suffix_s);
+              if ($truthy(digits['$end_with?']("_".$freeze()))) {
+                self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
+              } else if ((($truthy(digits['$empty?']()) && ($eqeq(self.num_base, 8))) && ($truthy(self['$version?'](18))))) {
+                digits = "0".$freeze()
+              } else if ($truthy(digits['$empty?']())) {
+                self.$diagnostic("error", "empty_numeric")
+              } else if (($eqeq(self.num_base, 8) && ($truthy((invalid_idx = digits.$index(/[89]/)))))) {
+                
+                invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
+                self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));
+              };
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
+              } else {
+                self.num_xfrm.$call(digits.$to_i(self.num_base))
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(456, $ret_or_1)) {
+              
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$9(chars){var self = $$9.$$s == null ? this : $$9.$$s;
+
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tIMAGINARY", self.$Complex(0, self.$Float(chars)));}, {$$arity: 1, $$s: self});;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              digits = self.$tok(self.ts, self.num_suffix_s);
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tFLOAT", self.$Float(digits), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
+              } else {
+                self.num_xfrm.$call(digits)
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(457, $ret_or_1)) {
+              
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$10(chars){var self = $$10.$$s == null ? this : $$10.$$s;
+                if (self.ts == null) self.ts = nil;
+                if (self.te == null) self.te = nil;
+
+                
+                
+                if (chars == null) chars = nil;;
+                self.$emit("tFLOAT", self.$Float(chars), self.ts, $rb_minus(self.te, 2));
+                return (p = $rb_minus(p, 2));}, {$$arity: 1, $$s: self});;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              digits = self.$tok(self.ts, self.num_suffix_s);
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tFLOAT", self.$Float(digits), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
+              } else {
+                self.num_xfrm.$call(digits)
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(458, $ret_or_1)) {
+              
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$11(chars){var self = $$11.$$s == null ? this : $$11.$$s;
+
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tRATIONAL", self.$Rational(chars));}, {$$arity: 1, $$s: self});;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              digits = self.$tok(self.ts, self.num_suffix_s);
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tFLOAT", self.$Float(digits), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
+              } else {
+                self.num_xfrm.$call(digits)
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(460, $ret_or_1)) {
+              
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$12(chars){var self = $$12.$$s == null ? this : $$12.$$s;
+
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tIMAGINARY", self.$Complex(0, self.$Rational(chars)));}, {$$arity: 1, $$s: self});;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              digits = self.$tok(self.ts, self.num_suffix_s);
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tFLOAT", self.$Float(digits), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
+              } else {
+                self.num_xfrm.$call(digits)
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(459, $ret_or_1)) {
+              
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$13(chars){var self = $$13.$$s == null ? this : $$13.$$s;
+                if (self.ts == null) self.ts = nil;
+                if (self.te == null) self.te = nil;
+
+                
+                
+                if (chars == null) chars = nil;;
+                self.$emit("tFLOAT", self.$Float(chars), self.ts, $rb_minus(self.te, 6));
+                return (p = $rb_minus(p, 6));}, {$$arity: 1, $$s: self});;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              digits = self.$tok(self.ts, self.num_suffix_s);
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tFLOAT", self.$Float(digits), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
+              } else {
+                self.num_xfrm.$call(digits)
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(137, $ret_or_1)) {
+              
+              
+              self.escape = "";
+              codepoints = self.$tok($rb_plus(self.escape_s, 2), $rb_minus(p, 1));
+              codepoint_s = $rb_plus(self.escape_s, 2);
+              if ($truthy($rb_lt(self.version, 24))) {
+                
+                if (($truthy(codepoints['$start_with?'](" ")) || ($truthy(codepoints['$start_with?']("\t"))))) {
+                  self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_plus(self.escape_s, 2), $rb_plus(self.escape_s, 3)))
+                };
+                if ($truthy((spaces_p = codepoints.$index(/[ \t]{2}/)))) {
+                  self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_plus($rb_plus(codepoint_s, spaces_p), 1), $rb_plus($rb_plus(codepoint_s, spaces_p), 2)))
+                };
+                if (($truthy(codepoints['$end_with?'](" ")) || ($truthy(codepoints['$end_with?']("\t"))))) {
+                  self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(p, 1), p))
+                };
+              };
+              (function(){var $brk = Opal.new_brk(); try {return $send(codepoints.$scan(/([0-9a-fA-F]+)|([ \t]+)/), 'each', [], function $$14($mlhs_tmp1){var $c, $d, self = $$14.$$s == null ? this : $$14.$$s, codepoint_str = nil, spaces = nil, codepoint = nil;
+                if (self.escape == null) self.escape = nil;
+
+                
+                
+                if ($mlhs_tmp1 == null) $mlhs_tmp1 = nil;;
+                $d = $mlhs_tmp1, $c = $to_ary($d), (codepoint_str = ($c[0] == null ? nil : $c[0])), (spaces = ($c[1] == null ? nil : $c[1])), $d;
+                if ($truthy(spaces)) {
+                  return (codepoint_s = $rb_plus(codepoint_s, spaces.$length()))
+                } else {
+                  
+                  codepoint = codepoint_str.$to_i(16);
+                  if ($truthy($rb_ge(codepoint, 1114112))) {
+                    
+                    self.$diagnostic("error", "unicode_point_too_large", nil, self.$range(codepoint_s, $rb_plus(codepoint_s, codepoint_str.$length())));
+                    
+                    Opal.brk(nil, $brk);
+                  };
+                  self.escape = $rb_plus(self.escape, codepoint.$chr($$$($$('Encoding'), 'UTF_8')));
+                  return (codepoint_s = $rb_plus(codepoint_s, codepoint_str.$length()));
+                };}, {$$arity: 1, $$s: self, $$brk: $brk, $$has_top_level_mlhs_arg: true})
+              } catch (err) { if (err === $brk) { return err.$v } else { throw err } }})();;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(168, $ret_or_1)) {
+              
+              
+              self.escape = "";
+              codepoints = self.$tok($rb_plus(self.escape_s, 2), $rb_minus(p, 1));
+              codepoint_s = $rb_plus(self.escape_s, 2);
+              if ($truthy($rb_lt(self.version, 24))) {
+                
+                if (($truthy(codepoints['$start_with?'](" ")) || ($truthy(codepoints['$start_with?']("\t"))))) {
+                  self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_plus(self.escape_s, 2), $rb_plus(self.escape_s, 3)))
+                };
+                if ($truthy((spaces_p = codepoints.$index(/[ \t]{2}/)))) {
+                  self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_plus($rb_plus(codepoint_s, spaces_p), 1), $rb_plus($rb_plus(codepoint_s, spaces_p), 2)))
+                };
+                if (($truthy(codepoints['$end_with?'](" ")) || ($truthy(codepoints['$end_with?']("\t"))))) {
+                  self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(p, 1), p))
+                };
+              };
+              (function(){var $brk = Opal.new_brk(); try {return $send(codepoints.$scan(/([0-9a-fA-F]+)|([ \t]+)/), 'each', [], function $$15($mlhs_tmp1){var $c, $d, self = $$15.$$s == null ? this : $$15.$$s, codepoint_str = nil, spaces = nil, codepoint = nil;
+                if (self.escape == null) self.escape = nil;
+
+                
+                
+                if ($mlhs_tmp1 == null) $mlhs_tmp1 = nil;;
+                $d = $mlhs_tmp1, $c = $to_ary($d), (codepoint_str = ($c[0] == null ? nil : $c[0])), (spaces = ($c[1] == null ? nil : $c[1])), $d;
+                if ($truthy(spaces)) {
+                  return (codepoint_s = $rb_plus(codepoint_s, spaces.$length()))
+                } else {
+                  
+                  codepoint = codepoint_str.$to_i(16);
+                  if ($truthy($rb_ge(codepoint, 1114112))) {
+                    
+                    self.$diagnostic("error", "unicode_point_too_large", nil, self.$range(codepoint_s, $rb_plus(codepoint_s, codepoint_str.$length())));
+                    
+                    Opal.brk(nil, $brk);
+                  };
+                  self.escape = $rb_plus(self.escape, codepoint.$chr($$$($$('Encoding'), 'UTF_8')));
+                  return (codepoint_s = $rb_plus(codepoint_s, codepoint_str.$length()));
+                };}, {$$arity: 1, $$s: self, $$brk: $brk, $$has_top_level_mlhs_arg: true})
+              } catch (err) { if (err === $brk) { return err.$v } else { throw err } }})();;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(382, $ret_or_1)) {
+              
+              
+              self.escape = "";
+              codepoints = self.$tok($rb_plus(self.escape_s, 2), $rb_minus(p, 1));
+              codepoint_s = $rb_plus(self.escape_s, 2);
+              if ($truthy($rb_lt(self.version, 24))) {
+                
+                if (($truthy(codepoints['$start_with?'](" ")) || ($truthy(codepoints['$start_with?']("\t"))))) {
+                  self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_plus(self.escape_s, 2), $rb_plus(self.escape_s, 3)))
+                };
+                if ($truthy((spaces_p = codepoints.$index(/[ \t]{2}/)))) {
+                  self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_plus($rb_plus(codepoint_s, spaces_p), 1), $rb_plus($rb_plus(codepoint_s, spaces_p), 2)))
+                };
+                if (($truthy(codepoints['$end_with?'](" ")) || ($truthy(codepoints['$end_with?']("\t"))))) {
+                  self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(p, 1), p))
+                };
+              };
+              (function(){var $brk = Opal.new_brk(); try {return $send(codepoints.$scan(/([0-9a-fA-F]+)|([ \t]+)/), 'each', [], function $$16($mlhs_tmp1){var $c, $d, self = $$16.$$s == null ? this : $$16.$$s, codepoint_str = nil, spaces = nil, codepoint = nil;
+                if (self.escape == null) self.escape = nil;
+
+                
+                
+                if ($mlhs_tmp1 == null) $mlhs_tmp1 = nil;;
+                $d = $mlhs_tmp1, $c = $to_ary($d), (codepoint_str = ($c[0] == null ? nil : $c[0])), (spaces = ($c[1] == null ? nil : $c[1])), $d;
+                if ($truthy(spaces)) {
+                  return (codepoint_s = $rb_plus(codepoint_s, spaces.$length()))
+                } else {
+                  
+                  codepoint = codepoint_str.$to_i(16);
+                  if ($truthy($rb_ge(codepoint, 1114112))) {
+                    
+                    self.$diagnostic("error", "unicode_point_too_large", nil, self.$range(codepoint_s, $rb_plus(codepoint_s, codepoint_str.$length())));
+                    
+                    Opal.brk(nil, $brk);
+                  };
+                  self.escape = $rb_plus(self.escape, codepoint.$chr($$$($$('Encoding'), 'UTF_8')));
+                  return (codepoint_s = $rb_plus(codepoint_s, codepoint_str.$length()));
+                };}, {$$arity: 1, $$s: self, $$brk: $brk, $$has_top_level_mlhs_arg: true})
+              } catch (err) { if (err === $brk) { return err.$v } else { throw err } }})();;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_274 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_274
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_275 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_275
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_276 = (function() {if ($truthy(($ret_or_277 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_277
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_276
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_278 = self.escape))) {
-                return $ret_or_278
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(118, $ret_or_1)) {
+              
+              
+              codepoint = self.source_pts['$[]']($rb_minus(p, 1));
+              if (($truthy($rb_ge(self.version, 30)) && (($eqeq(codepoint, 117) || ($eqeq(codepoint, 85)))))) {
+                self.$diagnostic("fatal", "invalid_escape")
+              };
+              if ($truthy((self.escape = $$('ESCAPES')['$[]'](codepoint))['$nil?']())) {
+                self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((364)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "escape_eof", nil, self.$range($rb_minus(p, 1), p));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_279 = self.escape))) {
-              return $ret_or_279
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((177)['$===']($case)) {
-            
-            self.escape_s = p;
-            self.escape = nil;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_280 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(149, $ret_or_1)) {
+              
+              
+              codepoint = self.source_pts['$[]']($rb_minus(p, 1));
+              if (($truthy($rb_ge(self.version, 30)) && (($eqeq(codepoint, 117) || ($eqeq(codepoint, 85)))))) {
+                self.$diagnostic("fatal", "invalid_escape")
+              };
+              if ($truthy((self.escape = $$('ESCAPES')['$[]'](codepoint))['$nil?']())) {
+                self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(363, $ret_or_1)) {
+              
+              
+              codepoint = self.source_pts['$[]']($rb_minus(p, 1));
+              if (($truthy($rb_ge(self.version, 30)) && (($eqeq(codepoint, 117) || ($eqeq(codepoint, 85)))))) {
+                self.$diagnostic("fatal", "invalid_escape")
+              };
+              if ($truthy((self.escape = $$('ESCAPES')['$[]'](codepoint))['$nil?']())) {
+                self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
               } else {
-                return $ret_or_280
-              }; return nil; })())) {
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(121, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "invalid_escape");;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_281 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_281
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_282 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_282
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_283 = (function() {if ($truthy(($ret_or_284 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_284
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_283
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_285 = self.escape))) {
-                return $ret_or_285
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(152, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "invalid_escape");;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((182)['$===']($case)) {
-            
-            self.escape_s = p;
-            self.escape = nil;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_286 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(366, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "invalid_escape");;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
               } else {
-                return $ret_or_286
-              }; return nil; })())) {
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(123, $ret_or_1)) {
+              
+              
+              self.escape = "\u007F";;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_287 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_287
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_288 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_288
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_289 = (function() {if ($truthy(($ret_or_290 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_290
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_289
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_291 = self.escape))) {
-                return $ret_or_291
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(154, $ret_or_1)) {
+              
+              
+              self.escape = "\u007F";;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(368, $ret_or_1)) {
+              
+              
+              self.escape = "\u007F";;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
+              } else {
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(120, $ret_or_1)) {
+              
+              
+              self.escape = self.$encode_escape(self.$tok(self.escape_s, p).$to_i(8)['$%'](256));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(151, $ret_or_1)) {
+              
+              
+              self.escape = self.$encode_escape(self.$tok(self.escape_s, p).$to_i(8)['$%'](256));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(365, $ret_or_1)) {
+              
+              
+              self.escape = self.$encode_escape(self.$tok(self.escape_s, p).$to_i(8)['$%'](256));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
+              } else {
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(140, $ret_or_1)) {
+              
+              
+              self.escape = self.$encode_escape(self.$tok($rb_plus(self.escape_s, 1), p).$to_i(16));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(171, $ret_or_1)) {
+              
+              
+              self.escape = self.$encode_escape(self.$tok($rb_plus(self.escape_s, 1), p).$to_i(16));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(385, $ret_or_1)) {
+              
+              
+              self.escape = self.$encode_escape(self.$tok($rb_plus(self.escape_s, 1), p).$to_i(16));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
+              } else {
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(139, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "invalid_hex_escape", nil, self.$range($rb_minus(self.escape_s, 1), $rb_plus(p, 2)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(170, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "invalid_hex_escape", nil, self.$range($rb_minus(self.escape_s, 1), $rb_plus(p, 2)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(384, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "invalid_hex_escape", nil, self.$range($rb_minus(self.escape_s, 1), $rb_plus(p, 2)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
+              } else {
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(134, $ret_or_1)) {
+              
+              
+              self.escape = self.$tok($rb_plus(self.escape_s, 1), p).$to_i(16).$chr($$$($$('Encoding'), 'UTF_8'));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(165, $ret_or_1)) {
+              
+              
+              self.escape = self.$tok($rb_plus(self.escape_s, 1), p).$to_i(16).$chr($$$($$('Encoding'), 'UTF_8'));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(379, $ret_or_1)) {
+              
+              
+              self.escape = self.$tok($rb_plus(self.escape_s, 1), p).$to_i(16).$chr($$$($$('Encoding'), 'UTF_8'));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
+              } else {
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(133, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(self.escape_s, 1), p));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(164, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(self.escape_s, 1), p));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(378, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(self.escape_s, 1), p));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
+              } else {
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(138, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(self.escape_s, 1), p));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(169, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(self.escape_s, 1), p));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(383, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(self.escape_s, 1), p));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
+              } else {
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(135, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "unterminated_unicode", nil, self.$range($rb_minus(p, 1), p));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(166, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "unterminated_unicode", nil, self.$range($rb_minus(p, 1), p));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(380, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "unterminated_unicode", nil, self.$range($rb_minus(p, 1), p));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
+              } else {
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(119, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "escape_eof", nil, self.$range($rb_minus(p, 1), p));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(150, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "escape_eof", nil, self.$range($rb_minus(p, 1), p));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(364, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "escape_eof", nil, self.$range($rb_minus(p, 1), p));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
+              } else {
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(177, $ret_or_1)) {
+              
+              
+              self.escape_s = p;
+              self.escape = nil;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(182, $ret_or_1)) {
+              
+              
+              self.escape_s = p;
+              self.escape = nil;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(58, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.newline_s = p;;
+            } else if ($eqeqeq(31, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              tm = p;;
+            } else if ($eqeqeq(33, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              tm = p;;
+            } else if ($eqeqeq(35, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              tm = p;;
+            } else if ($eqeqeq(219, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(238, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(246, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(34, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.te = $rb_plus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;;
+            } else if ($eqeqeq(277, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(269, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;;
+            } else if ($eqeqeq(288, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(300, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(296, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(p, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;;
+            } else if ($eqeqeq(59, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit("tUNARY_NUM", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
+              p = $rb_minus(p, 1);
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(50, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.te = $rb_plus(p, 1);
+              
+              self.$emit("tIDENTIFIER", ident_tok, ident_ts, ident_te);
+              p = $rb_minus(ident_te, 1);
+              if ((($not(self.static_env['$nil?']()) && ($truthy(self.static_env['$declared?'](ident_tok)))) && ($truthy($rb_lt(self.version, 25))))) {
+                self.cs = 465
+              } else {
+                self.cs = 525
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(318, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(402, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(398, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              if ($truthy(self.context.$in_kwarg())) {
+                
+                p = $rb_minus(p, 1);
+                
+                self.cs = 810;
+                _goto_level = _again;
+                continue;;;
+              } else {
+                
+                self.cs = 186;
+                _goto_level = _again;
+                continue;;
+              };;;
+            } else if ($eqeqeq(411, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(408, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              
+              self.cs = 186;
+              _goto_level = _again;
+              continue;;;;;
+            } else if ($eqeqeq(495, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(427, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              
+              self.cs = 990;
+              _goto_level = _again;
+              continue;;;;;
+            } else if ($eqeqeq(101, $ret_or_1)) {
+              
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(268, $ret_or_1)) {
+              
+              
+              self.cond.$push(false);
+              self.cmdarg.$push(false);
+              current_literal = self.$literal();
+              if ($truthy(current_literal)) {
+                current_literal.$start_interp_brace()
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              if ($eqeq(self.lambda_stack.$last(), self.paren_nest)) {
+                
+                self.lambda_stack.$pop();
+                self.$emit("tLAMBEG", "{".$freeze(), $rb_minus(self.te, 1), self.te);
+              } else {
+                self.$emit("tLCURLY", "{".$freeze(), $rb_minus(self.te, 1), self.te)
+              };
+              self.command_start = true;
+              self.paren_nest = $rb_plus(self.paren_nest, 1);
+              self.cs = 802;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(290, $ret_or_1)) {
+              
+              
+              self.cond.$push(false);
+              self.cmdarg.$push(false);
+              current_literal = self.$literal();
+              if ($truthy(current_literal)) {
+                current_literal.$start_interp_brace()
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              if ($eqeq(self.lambda_stack.$last(), self.paren_nest)) {
+                
+                self.lambda_stack.$pop();
+                self.$emit("tLAMBEG", "{".$freeze());
+              } else {
+                self.$emit("tLBRACE_ARG", "{".$freeze())
+              };
+              self.paren_nest = $rb_plus(self.paren_nest, 1);
+              self.command_start = true;
+              self.cs = 802;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(393, $ret_or_1)) {
+              
+              
+              self.cond.$push(false);
+              self.cmdarg.$push(false);
+              current_literal = self.$literal();
+              if ($truthy(current_literal)) {
+                current_literal.$start_interp_brace()
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              if ($eqeq(self.lambda_stack.$last(), self.paren_nest)) {
+                
+                self.lambda_stack.$pop();
+                self.command_start = true;
+                self.$emit("tLAMBEG", "{".$freeze());
+              } else {
+                self.$emit("tLBRACE", "{".$freeze())
+              };
+              self.paren_nest = $rb_plus(self.paren_nest, 1);
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(508, $ret_or_1)) {
+              
+              
+              self.cond.$push(false);
+              self.cmdarg.$push(false);
+              current_literal = self.$literal();
+              if ($truthy(current_literal)) {
+                current_literal.$start_interp_brace()
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              if ($eqeq(self.lambda_stack.$last(), self.paren_nest)) {
+                
+                self.lambda_stack.$pop();
+                if ($eqeq(self.$tok(), "{".$freeze())) {
+                  self.$emit("tLAMBEG", "{".$freeze())
+                } else {
+                  self.$emit("kDO_LAMBDA", "do".$freeze())
+                };
+              } else if ($eqeq(self.$tok(), "{".$freeze())) {
+                self.$emit("tLCURLY", "{".$freeze())
+              } else {
+                self.$emit_do()
+              };
+              if ($eqeq(self.$tok(), "{".$freeze())) {
+                self.paren_nest = $rb_plus(self.paren_nest, 1)
+              };
+              self.command_start = true;
+              self.cs = 802;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(509, $ret_or_1)) {
+              
+              
+              current_literal = self.$literal();
+              if ($truthy(current_literal)) {
+                if ($truthy(current_literal.$end_interp_brace_and_try_closing())) {
+                  
+                  if ($truthy(self['$version?'](18, 19))) {
+                    
+                    self.$emit("tRCURLY", "}".$freeze(), $rb_minus(p, 1), p);
+                    self.cond.$lexpop();
+                    self.cmdarg.$lexpop();
+                  } else {
+                    self.$emit("tSTRING_DEND", "}".$freeze(), $rb_minus(p, 1), p)
+                  };
+                  if ($truthy(current_literal.$saved_herebody_s())) {
+                    self.herebody_s = current_literal.$saved_herebody_s()
+                  };
+                  p = $rb_minus(p, 1);
+                  self.cs = self.$next_state_for_literal(current_literal);
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                }
+              };
+              self.paren_nest = $rb_minus(self.paren_nest, 1);;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit_table($$('PUNCTUATION'));
+              if ($truthy($rb_lt(self.version, 24))) {
+                
+                self.cond.$lexpop();
+                self.cmdarg.$lexpop();
+              } else {
+                
+                self.cond.$pop();
+                self.cmdarg.$pop();
+              };
+              if (($eqeq(self.$tok(), "}".$freeze()) || ($eqeq(self.$tok(), "]".$freeze())))) {
+                if ($truthy($rb_ge(self.version, 25))) {
+                  self.cs = 810
+                } else {
+                  self.cs = 531
+                }
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(61, $ret_or_1)) {
+              
+              
+              self.sharp_s = $rb_minus(p, 1);;
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+            } else if ($eqeqeq(65, $ret_or_1)) {
+              
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.newline_s = p;;
+            } else if ($eqeqeq(222, $ret_or_1)) {
+              
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(237, $ret_or_1)) {
+              
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(249, $ret_or_1)) {
+              
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(271, $ret_or_1)) {
+              
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;;
+            } else if ($eqeqeq(286, $ret_or_1)) {
+              
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(298, $ret_or_1)) {
+              
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(324, $ret_or_1)) {
+              
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(400, $ret_or_1)) {
+              
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(410, $ret_or_1)) {
+              
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(431, $ret_or_1)) {
+              
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(103, $ret_or_1)) {
+              
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(243, $ret_or_1)) {
+              
+              
+              tm = p;;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tFID", self.$tok(self.ts, tm), self.ts, tm);
+              self.cs = self.$arg_or_cmdarg(cmd_state);
+              p = $rb_minus(tm, 1);
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(338, $ret_or_1)) {
+              
+              
+              tm = p;;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1), tm), self.ts, tm);
+              p = $rb_minus(tm, 1);
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(309, $ret_or_1)) {
+              
+              
+              tm = p;;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;;
+            } else if ($eqeqeq(424, $ret_or_1)) {
+              
+              
+              tm = p;;
+              
+              if ($eqeqeq(145, ($ret_or_2 = self.act))) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                if ($eqeq(self.lambda_stack.$last(), self.paren_nest)) {
+                  
+                  self.lambda_stack.$pop();
+                  if ($eqeq(self.$tok(), "{".$freeze())) {
+                    self.$emit("tLAMBEG", "{".$freeze())
+                  } else {
+                    self.$emit("kDO_LAMBDA", "do".$freeze())
+                  };
+                } else if ($eqeq(self.$tok(), "{".$freeze())) {
+                  self.$emit("tLCURLY", "{".$freeze())
+                } else {
+                  self.$emit_do()
+                };
+                if ($eqeq(self.$tok(), "{".$freeze())) {
+                  self.paren_nest = $rb_plus(self.paren_nest, 1)
+                };
+                self.command_start = true;
+                self.cs = 802;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(146, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('KEYWORDS'));
+                self.cs = 352;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(147, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit("kCLASS", "class".$freeze(), self.ts, $rb_plus(self.ts, 5));
+                self.$emit("tLSHFT", "<<".$freeze(), $rb_minus(self.te, 2), self.te);
+                self.cs = 802;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(148, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('KEYWORDS'));
+                self.cs = 563;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(149, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('KEYWORDS'));
+                self.command_start = true;
+                self.cs = 802;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(150, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('KEYWORDS'));
+                self.cs = 539;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(151, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('KEYWORDS'));
+                if (($truthy(self['$version?'](18)) && ($eqeq(self.$tok(), "not".$freeze())))) {
+                  
+                  self.cs = 563;
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  self.cs = 494;
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+              } else if ($eqeqeq(152, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                if ($truthy(self['$version?'](18))) {
+                  
+                  self.$emit("tIDENTIFIER");
+                  if (!($not(self.static_env['$nil?']()) && ($truthy(self.static_env['$declared?'](self.$tok()))))) {
+                    self.cs = self.$arg_or_cmdarg(cmd_state)
+                  };
+                } else {
+                  self.$emit("k__ENCODING__", "__ENCODING__".$freeze())
+                };
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(153, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('KEYWORDS'));
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(154, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                digits = self.$tok(self.num_digits_s, self.num_suffix_s);
+                if ($truthy(digits['$end_with?']("_".$freeze()))) {
+                  self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
+                } else if ((($truthy(digits['$empty?']()) && ($eqeq(self.num_base, 8))) && ($truthy(self['$version?'](18))))) {
+                  digits = "0".$freeze()
+                } else if ($truthy(digits['$empty?']())) {
+                  self.$diagnostic("error", "empty_numeric")
+                } else if (($eqeq(self.num_base, 8) && ($truthy((invalid_idx = digits.$index(/[89]/)))))) {
+                  
+                  invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
+                  self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));
+                };
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  
+                  self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
+                  p = $rb_minus(self.num_suffix_s, 1);
+                } else {
+                  self.num_xfrm.$call(digits.$to_i(self.num_base))
+                };
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(156, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": self.$tok($rb_minus(self.te, 1), self.te)}), self.$range($rb_minus(self.te, 1), self.te))
+                } else {
+                  
+                  self.$emit("tINTEGER", self.$tok(self.ts, $rb_minus(self.te, 1)).$to_i(), self.ts, $rb_minus(self.te, 1));
+                  p = $rb_minus(p, 1);
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+              } else if ($eqeqeq(157, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": self.$tok($rb_minus(self.te, 1), self.te)}), self.$range($rb_minus(self.te, 1), self.te))
+                } else {
+                  
+                  self.$emit("tFLOAT", self.$tok(self.ts, $rb_minus(self.te, 1)).$to_f(), self.ts, $rb_minus(self.te, 1));
+                  p = $rb_minus(p, 1);
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+              } else if ($eqeqeq(158, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                digits = self.$tok(self.ts, self.num_suffix_s);
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  
+                  self.$emit("tFLOAT", self.$Float(digits), self.ts, self.num_suffix_s);
+                  p = $rb_minus(self.num_suffix_s, 1);
+                } else {
+                  self.num_xfrm.$call(digits)
+                };
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(160, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit("tCONSTANT");
+                self.cs = self.$arg_or_cmdarg(cmd_state);
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(164, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit("tIDENTIFIER");
+                if (($not(self.static_env['$nil?']()) && ($truthy(self.static_env['$declared?'](self.$tok()))))) {
+                  
+                  self.cs = 465;
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  self.cs = self.$arg_or_cmdarg(cmd_state);
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+              } else if ($eqeqeq(165, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                if ($eqeq(tm, self.te)) {
+                  self.$emit("tFID")
+                } else {
+                  
+                  self.$emit("tIDENTIFIER", self.$tok(self.ts, tm), self.ts, tm);
+                  p = $rb_minus(tm, 1);
+                };
+                self.cs = 494;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(167, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('PUNCTUATION'));
+                self.cs = 802;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(168, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('PUNCTUATION'));
+                self.cs = 563;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else {
+                nil
+              };;
+            } else if ($eqeqeq(244, $ret_or_1)) {
+              
+              
+              tm = $rb_minus(p, 2);;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tFID", self.$tok(self.ts, tm), self.ts, tm);
+              self.cs = self.$arg_or_cmdarg(cmd_state);
+              p = $rb_minus(tm, 1);
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(339, $ret_or_1)) {
+              
+              
+              tm = $rb_minus(p, 2);;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1), tm), self.ts, tm);
+              p = $rb_minus(tm, 1);
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(311, $ret_or_1)) {
+              
+              
+              tm = $rb_minus(p, 2);;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;;
+            } else if ($eqeqeq(425, $ret_or_1)) {
+              
+              
+              tm = $rb_minus(p, 2);;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              if ($eqeq(tm, self.te)) {
+                self.$emit("tFID")
+              } else {
+                
+                self.$emit("tIDENTIFIER", self.$tok(self.ts, tm), self.ts, tm);
+                p = $rb_minus(tm, 1);
+              };
+              self.cs = 494;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(340, $ret_or_1)) {
+              
+              
+              tm = p;;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1), tm), self.ts, tm);
+              p = $rb_minus(tm, 1);
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(312, $ret_or_1)) {
+              
+              
+              tm = p;;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;;
+            } else if ($eqeqeq(341, $ret_or_1)) {
+              
+              
+              tm = $rb_minus(p, 2);;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1), tm), self.ts, tm);
+              p = $rb_minus(tm, 1);
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(313, $ret_or_1)) {
+              
+              
+              tm = $rb_minus(p, 2);;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;;
+            } else if ($eqeqeq(345, $ret_or_1)) {
+              
+              
+              tm = $rb_minus(p, 2);;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1), tm), self.ts, tm);
+              p = $rb_minus(tm, 1);
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(316, $ret_or_1)) {
+              
+              
+              tm = $rb_minus(p, 2);;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              p = $rb_minus(self.ts, 1);
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;;
+            } else if ($eqeqeq(344, $ret_or_1)) {
+              
+              
+              tm = $rb_minus(p, 2);;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1), tm), self.ts, tm);
+              p = $rb_minus(tm, 1);
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(315, $ret_or_1)) {
+              
+              
+              tm = $rb_minus(p, 2);;
+              
+              if ($eqeqeq(99, ($ret_or_2 = self.act))) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit("tUNARY_NUM", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
+                p = $rb_minus(p, 1);
+                self.cs = 810;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(106, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$diagnostic("error", "unterminated_heredoc_id", nil, self.$range(self.ts, $rb_plus(self.ts, 1)));
+              } else if ($eqeqeq(117, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                if ($truthy($rb_ge(self.version, 27))) {
+                  
+                  self.$emit("tPIPE", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
+                  p = $rb_minus(p, 1);
+                  self.cs = 563;
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  p = $rb_minus(p, 2);
+                  
+                  self.cs = 810;
+                  _goto_level = _again;
+                  continue;;;
+                };
+              } else if ($eqeqeq(121, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('PUNCTUATION_BEGIN'));
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(122, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit("kRESCUE", "rescue".$freeze(), self.ts, tm);
+                p = $rb_minus(tm, 1);
+                self.cs = 539;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(123, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit_table($$('KEYWORDS_BEGIN'));
+                self.command_start = true;
+                self.cs = 802;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else if ($eqeqeq(127, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                p = $rb_minus(self.ts, 1);
+                
+                self.cs = 810;
+                _goto_level = _again;
+                continue;;;
+              } else if ($eqeqeq(128, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                self.$emit("tIDENTIFIER");
+                if (($not(self.static_env['$nil?']()) && ($truthy(self.static_env['$declared?'](self.$tok()))))) {
+                  
+                  self.cs = 465;
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  self.cs = self.$arg_or_cmdarg(cmd_state);
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+              } else if ($eqeqeq(132, $ret_or_2)) {
+                
+                
+                p = $rb_minus(self.te, 1);;
+                p = $rb_minus(self.ts, 1);
+                
+                self.cs = 810;
+                _goto_level = _again;
+                continue;;;
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((58)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
+                nil
+              };;
+            } else if ($eqeqeq(342, $ret_or_1)) {
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.newline_s = p;;}
-            else if ((31)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            tm = p;;}
-            else if ((33)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
+              tm = $rb_minus(p, 3);;
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            tm = p;;}
-            else if ((35)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            tm = p;;}
-            else if ((219)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
+              self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1), tm), self.ts, tm);
+              p = $rb_minus(tm, 1);
+              self.cs = 810;
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((238)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(314, $ret_or_1)) {
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((246)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((34)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
+              tm = $rb_minus(p, 3);;
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.te = $rb_plus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;;}
-            else if ((277)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((269)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
+              p = $rb_minus(self.ts, 1);
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;;}
-            else if ((288)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;;
+            } else if ($eqeqeq(343, $ret_or_1)) {
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((300)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((296)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
+              tm = $rb_minus(p, 2);;
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(p, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;;}
-            else if ((59)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit("tUNARY_NUM", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
-            p = $rb_minus(p, 1);
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((50)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
+              self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1), tm), self.ts, tm);
+              p = $rb_minus(tm, 1);
+              self.cs = 810;
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.te = $rb_plus(p, 1);
-            
-            self.$emit("tIDENTIFIER", ident_tok, ident_ts, ident_te);
-            p = $rb_minus(ident_te, 1);
-            if ($truthy((function() {if ($truthy(($ret_or_292 = (function() {if ($truthy(($ret_or_293 = self.static_env['$nil?']()['$!']()))) {
-              return self.static_env['$declared?'](ident_tok)
-            } else {
-              return $ret_or_293
-            }; return nil; })()))) {
-              return $rb_lt(self.version, 25)
-            } else {
-              return $ret_or_292
-            }; return nil; })())) {
-              self.cs = 465
-            } else {
-              self.cs = 525
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((318)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(490, $ret_or_1)) {
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((402)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((398)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
+              tm = $rb_minus(p, 2);;
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            if ($truthy(self.context.$in_kwarg())) {
+              self.te = p;
+              p = $rb_minus(p, 1);
               
+              self.$emit("tCONSTANT", self.$tok(self.ts, tm), self.ts, tm);
+              p = $rb_minus(tm, 1);
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(267, $ret_or_1)) {
+              
+              
+              self.cond.$push(false);
+              self.cmdarg.$push(false);
+              self.paren_nest = $rb_plus(self.paren_nest, 1);;
+              
+              self.te = p;
               p = $rb_minus(p, 1);
               
-              self.cs = 810;
-              _goto_level = _again;
-              continue;;;
-            } else {
+              self.$emit("tLBRACK", "[".$freeze(), $rb_minus(self.te, 1), self.te);
+              self.cs = 563;
               
-              self.cs = 186;
-              _goto_level = _again;
-              continue;;
-            };;;}
-            else if ((411)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(386, $ret_or_1)) {
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((408)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            
-            self.cs = 186;
-            _goto_level = _again;
-            continue;;;;;}
-            else if ((495)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
+              self.cond.$push(false);
+              self.cmdarg.$push(false);
+              self.paren_nest = $rb_plus(self.paren_nest, 1);;
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((427)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            
-            self.cs = 990;
-            _goto_level = _again;
-            continue;;;;;}
-            else if ((101)['$===']($case)) {
-            
-            if ($truthy(self.herebody_s)) {
+              self.$emit("tLBRACK", "[".$freeze());
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((268)['$===']($case)) {
-            
-            self.cond.$push(false);
-            self.cmdarg.$push(false);
-            current_literal = self.$literal();
-            if ($truthy(current_literal)) {
-              current_literal.$start_interp_brace()};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            if (self.lambda_stack.$last()['$=='](self.paren_nest)) {
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(493, $ret_or_1)) {
               
-              self.lambda_stack.$pop();
-              self.$emit("tLAMBEG", "{".$freeze(), $rb_minus(self.te, 1), self.te);
-            } else {
-              self.$emit("tLCURLY", "{".$freeze(), $rb_minus(self.te, 1), self.te)
-            };
-            self.command_start = true;
-            self.paren_nest = $rb_plus(self.paren_nest, 1);
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((290)['$===']($case)) {
-            
-            self.cond.$push(false);
-            self.cmdarg.$push(false);
-            current_literal = self.$literal();
-            if ($truthy(current_literal)) {
-              current_literal.$start_interp_brace()};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            if (self.lambda_stack.$last()['$=='](self.paren_nest)) {
               
-              self.lambda_stack.$pop();
-              self.$emit("tLAMBEG", "{".$freeze());
-            } else {
-              self.$emit("tLBRACE_ARG", "{".$freeze())
-            };
-            self.paren_nest = $rb_plus(self.paren_nest, 1);
-            self.command_start = true;
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((393)['$===']($case)) {
-            
-            self.cond.$push(false);
-            self.cmdarg.$push(false);
-            current_literal = self.$literal();
-            if ($truthy(current_literal)) {
-              current_literal.$start_interp_brace()};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            if (self.lambda_stack.$last()['$=='](self.paren_nest)) {
+              self.cond.$push(false);
+              self.cmdarg.$push(false);
+              self.paren_nest = $rb_plus(self.paren_nest, 1);;
               
-              self.lambda_stack.$pop();
-              self.command_start = true;
-              self.$emit("tLAMBEG", "{".$freeze());
-            } else {
-              self.$emit("tLBRACE", "{".$freeze())
-            };
-            self.paren_nest = $rb_plus(self.paren_nest, 1);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((508)['$===']($case)) {
-            
-            self.cond.$push(false);
-            self.cmdarg.$push(false);
-            current_literal = self.$literal();
-            if ($truthy(current_literal)) {
-              current_literal.$start_interp_brace()};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            if (self.lambda_stack.$last()['$=='](self.paren_nest)) {
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tLBRACK2", "[".$freeze());
+              self.cs = 563;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(496, $ret_or_1)) {
               
-              self.lambda_stack.$pop();
-              if (self.$tok()['$==']("{".$freeze())) {
-                self.$emit("tLAMBEG", "{".$freeze())
+              
+              self.paren_nest = $rb_minus(self.paren_nest, 1);;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit_table($$('PUNCTUATION'));
+              if ($truthy($rb_lt(self.version, 24))) {
+                
+                self.cond.$lexpop();
+                self.cmdarg.$lexpop();
               } else {
-                self.$emit("kDO_LAMBDA", "do".$freeze())
-              };
-            } else if (self.$tok()['$==']("{".$freeze())) {
-              self.$emit("tLCURLY", "{".$freeze())
-            } else {
-              self.$emit_do()
-            };
-            if (self.$tok()['$==']("{".$freeze())) {
-              self.paren_nest = $rb_plus(self.paren_nest, 1)};
-            self.command_start = true;
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((509)['$===']($case)) {
-            
-            current_literal = self.$literal();
-            if ($truthy(current_literal)) {
-              if ($truthy(current_literal.$end_interp_brace_and_try_closing())) {
                 
-                if ($truthy(self['$version?'](18, 19))) {
-                  
-                  self.$emit("tRCURLY", "}".$freeze(), $rb_minus(p, 1), p);
-                  self.cond.$lexpop();
-                  self.cmdarg.$lexpop();
+                self.cond.$pop();
+                self.cmdarg.$pop();
+              };
+              if (($eqeq(self.$tok(), "}".$freeze()) || ($eqeq(self.$tok(), "]".$freeze())))) {
+                if ($truthy($rb_ge(self.version, 25))) {
+                  self.cs = 810
                 } else {
-                  self.$emit("tSTRING_DEND", "}".$freeze(), $rb_minus(p, 1), p)
-                };
-                if ($truthy(current_literal.$saved_herebody_s())) {
-                  self.herebody_s = current_literal.$saved_herebody_s()};
-                p = $rb_minus(p, 1);
-                self.cs = self.$next_state_for_literal(current_literal);
-                
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;}};
-            self.paren_nest = $rb_minus(self.paren_nest, 1);;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            if ($truthy($rb_lt(self.version, 24))) {
+                  self.cs = 531
+                }
+              };
               
-              self.cond.$lexpop();
-              self.cmdarg.$lexpop();
-            } else {
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(259, $ret_or_1)) {
               
-              self.cond.$pop();
-              self.cmdarg.$pop();
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_294 = self.$tok()['$==']("}".$freeze())))) {
-              return $ret_or_294
-            } else {
-              return self.$tok()['$==']("]".$freeze())
-            }; return nil; })())) {
-              if ($truthy($rb_ge(self.version, 25))) {
-                self.cs = 810
-              } else {
-                self.cs = 531
-              }};
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((61)['$===']($case)) {
-            
-            self.sharp_s = $rb_minus(p, 1);;
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;}
-            else if ((65)['$===']($case)) {
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.newline_s = p;;}
-            else if ((222)['$===']($case)) {
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((237)['$===']($case)) {
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((249)['$===']($case)) {
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((271)['$===']($case)) {
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;;}
-            else if ((286)['$===']($case)) {
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((298)['$===']($case)) {
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((324)['$===']($case)) {
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((400)['$===']($case)) {
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((410)['$===']($case)) {
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((431)['$===']($case)) {
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((103)['$===']($case)) {
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((243)['$===']($case)) {
-            
-            tm = p;;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tFID", self.$tok(self.ts, tm), self.ts, tm);
-            self.cs = self.$arg_or_cmdarg(cmd_state);
-            p = $rb_minus(tm, 1);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((338)['$===']($case)) {
-            
-            tm = p;;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1), tm), self.ts, tm);
-            p = $rb_minus(tm, 1);
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((309)['$===']($case)) {
-            
-            tm = p;;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;;}
-            else if ((424)['$===']($case)) {
-            
-            tm = p;;
-            
-            $case = self.act;
-            if ((145)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            if (self.lambda_stack.$last()['$=='](self.paren_nest)) {
               
-              self.lambda_stack.$pop();
-              if (self.$tok()['$==']("{".$freeze())) {
-                self.$emit("tLAMBEG", "{".$freeze())
+              self.cond.$push(false);
+              self.cmdarg.$push(false);
+              self.paren_nest = $rb_plus(self.paren_nest, 1);
+              if ($truthy(self['$version?'](18))) {
+                self.command_start = true
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              if ($truthy(self['$version?'](18))) {
+                
+                self.$emit("tLPAREN2", "(".$freeze(), $rb_minus(self.te, 1), self.te);
+                self.cs = 802;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
               } else {
-                self.$emit("kDO_LAMBDA", "do".$freeze())
-              };
-            } else if (self.$tok()['$==']("{".$freeze())) {
-              self.$emit("tLCURLY", "{".$freeze())
-            } else {
-              self.$emit_do()
-            };
-            if (self.$tok()['$==']("{".$freeze())) {
-              self.paren_nest = $rb_plus(self.paren_nest, 1)};
-            self.command_start = true;
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((146)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'KEYWORDS'));
-            self.cs = 352;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((147)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit("kCLASS", "class".$freeze(), self.ts, $rb_plus(self.ts, 5));
-            self.$emit("tLSHFT", "<<".$freeze(), $rb_minus(self.te, 2), self.te);
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((148)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'KEYWORDS'));
-            self.cs = 563;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((149)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'KEYWORDS'));
-            self.command_start = true;
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((150)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'KEYWORDS'));
-            self.cs = 539;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((151)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'KEYWORDS'));
-            if ($truthy((function() {if ($truthy(($ret_or_295 = self['$version?'](18)))) {
-              return self.$tok()['$==']("not".$freeze())
-            } else {
-              return $ret_or_295
-            }; return nil; })())) {
+                
+                self.$emit("tLPAREN_ARG", "(".$freeze(), $rb_minus(self.te, 1), self.te);
+                self.cs = 563;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              };;;
+            } else if ($eqeqeq(272, $ret_or_1)) {
+              
               
+              self.cond.$push(false);
+              self.cmdarg.$push(false);
+              self.paren_nest = $rb_plus(self.paren_nest, 1);
+              if ($truthy(self['$version?'](18))) {
+                self.command_start = true
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tLPAREN2", "(".$freeze());
               self.cs = 563;
               
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;
-            } else {
+              continue;;;;;
+            } else if ($eqeqeq(280, $ret_or_1)) {
               
-              self.cs = 494;
+              
+              self.cond.$push(false);
+              self.cmdarg.$push(false);
+              self.paren_nest = $rb_plus(self.paren_nest, 1);
+              if ($truthy(self['$version?'](18))) {
+                self.command_start = true
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tLPAREN_ARG", "(".$freeze(), $rb_minus(self.te, 1), self.te);
+              if ($truthy(self['$version?'](18))) {
+                
+                self.cs = 802;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else {
+                
+                self.cs = 563;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              };;;
+            } else if ($eqeqeq(328, $ret_or_1)) {
+              
+              
+              self.cond.$push(false);
+              self.cmdarg.$push(false);
+              self.paren_nest = $rb_plus(self.paren_nest, 1);
+              if ($truthy(self['$version?'](18))) {
+                self.command_start = true
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit("tLPAREN", "(".$freeze());
               
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;
-            };}
-            else if ((152)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            if ($truthy(self['$version?'](18))) {
+              continue;;;;;
+            } else if ($eqeqeq(437, $ret_or_1)) {
               
-              self.$emit("tIDENTIFIER");
-              if ($truthy((function() {if ($truthy(($ret_or_296 = self.static_env['$nil?']()['$!']()))) {
-                return self.static_env['$declared?'](self.$tok())
-              } else {
-                return $ret_or_296
-              }; return nil; })())) {
-              } else {
-                self.cs = self.$arg_or_cmdarg(cmd_state)
-              };
-            } else {
-              self.$emit("k__ENCODING__", "__ENCODING__".$freeze())
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((153)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'KEYWORDS'));
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((154)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            digits = self.$tok(self.num_digits_s, self.num_suffix_s);
-            if ($truthy(digits['$end_with?']("_".$freeze()))) {
-              self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
-            } else if ($truthy((function() {if ($truthy(($ret_or_297 = (function() {if ($truthy(($ret_or_298 = digits['$empty?']()))) {
-              return self.num_base['$=='](8)
-            } else {
-              return $ret_or_298
-            }; return nil; })()))) {
-              return self['$version?'](18)
-            } else {
-              return $ret_or_297
-            }; return nil; })())) {
-              digits = "0".$freeze()
-            } else if ($truthy(digits['$empty?']())) {
-              self.$diagnostic("error", "empty_numeric")
-            } else if ($truthy((function() {if ($truthy(($ret_or_299 = self.num_base['$=='](8)))) {
-              
-              return (invalid_idx = digits.$index(/[89]/));
-            } else {
-              return $ret_or_299
-            }; return nil; })())) {
               
-              invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
-              self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));};
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              self.cond.$push(false);
+              self.cmdarg.$push(false);
+              self.paren_nest = $rb_plus(self.paren_nest, 1);
+              if ($truthy(self['$version?'](18))) {
+                self.command_start = true
+              };;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$emit_table($$('PUNCTUATION'));
+              self.cs = 563;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(438, $ret_or_1)) {
               
-              self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits.$to_i(self.num_base))
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((156)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            if ($truthy(self['$version?'](18, 19, 20))) {
-              self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": self.$tok($rb_minus(self.te, 1), self.te)}), self.$range($rb_minus(self.te, 1), self.te))
-            } else {
               
-              self.$emit("tINTEGER", self.$tok(self.ts, $rb_minus(self.te, 1)).$to_i(), self.ts, $rb_minus(self.te, 1));
+              self.paren_nest = $rb_minus(self.paren_nest, 1);;
+              
+              self.te = p;
               p = $rb_minus(p, 1);
               
+              self.$emit_table($$('PUNCTUATION'));
+              if ($truthy($rb_lt(self.version, 24))) {
+                
+                self.cond.$lexpop();
+                self.cmdarg.$lexpop();
+              } else {
+                
+                self.cond.$pop();
+                self.cmdarg.$pop();
+              };
+              if (($eqeq(self.$tok(), "}".$freeze()) || ($eqeq(self.$tok(), "]".$freeze())))) {
+                if ($truthy($rb_ge(self.version, 25))) {
+                  self.cs = 810
+                } else {
+                  self.cs = 531
+                }
+              };
+              
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;
-            };}
-            else if ((157)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            if ($truthy(self['$version?'](18, 19, 20))) {
-              self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": self.$tok($rb_minus(self.te, 1), self.te)}), self.$range($rb_minus(self.te, 1), self.te))
-            } else {
+              continue;;;;;
+            } else if ($eqeqeq(72, $ret_or_1)) {
+              
+              
+              heredoc_e = p;;
+              
+              self.newline_s = p;;
+            } else if ($eqeqeq(353, $ret_or_1)) {
+              
+              
+              new_herebody_s = p;;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              self.$tok(self.ts, heredoc_e)['$=~'](/^<<(-?)(~?)(["'`]?)(.*)\3$/m);
+              indent = ($truthy(($ret_or_2 = (($b = $gvars['~']) === nil ? nil : $b['$[]'](1))['$empty?']()['$!']())) ? ($ret_or_2) : ((($b = $gvars['~']) === nil ? nil : $b['$[]'](2))['$empty?']()['$!']()));
+              dedent_body = (($b = $gvars['~']) === nil ? nil : $b['$[]'](2))['$empty?']()['$!']();
+              type = ($truthy((($b = $gvars['~']) === nil ? nil : $b['$[]'](3))['$empty?']()) ? ("<<\"".$freeze()) : ($rb_plus("<<".$freeze(), (($b = $gvars['~']) === nil ? nil : $b['$[]'](3)))));
+              delimiter = (($b = $gvars['~']) === nil ? nil : $b['$[]'](4));
+              if ($truthy($rb_ge(self.version, 27))) {
+                if (($truthy($rb_gt(delimiter.$count("\n"), 0)) || ($truthy($rb_gt(delimiter.$count("\r"), 0))))) {
+                  self.$diagnostic("error", "unterminated_heredoc_id", nil, self.$range(self.ts, $rb_plus(self.ts, 1)))
+                }
+              } else if ($truthy($rb_ge(self.version, 24))) {
+                if ($truthy($rb_gt(delimiter.$count("\n"), 0))) {
+                  if ($truthy(delimiter['$end_with?']("\n"))) {
+                    
+                    self.$diagnostic("warning", "heredoc_id_ends_with_nl", nil, self.$range(self.ts, $rb_plus(self.ts, 1)));
+                    delimiter = delimiter.$rstrip();
+                  } else {
+                    self.$diagnostic("fatal", "heredoc_id_has_newline", nil, self.$range(self.ts, $rb_plus(self.ts, 1)))
+                  }
+                }
+              };
+              if (($truthy(dedent_body) && ($truthy(self['$version?'](18, 19, 20, 21, 22))))) {
+                
+                self.$emit("tLSHFT", "<<".$freeze(), self.ts, $rb_plus(self.ts, 2));
+                p = $rb_plus(self.ts, 1);
+                self.cs = 563;
+                
+                p = $rb_plus(p, 1);
+                _goto_level = _out;
+                continue;;;
+              } else {
+                
+                self.cs = self.$push_literal(type, delimiter, self.ts, heredoc_e, indent, dedent_body);
+                self.herebody_s = ($truthy(($ret_or_2 = self.herebody_s)) ? ($ret_or_2) : (new_herebody_s));
+                p = $rb_minus(self.herebody_s, 1);
+              };;;
+            } else if ($eqeqeq(348, $ret_or_1)) {
+              
               
-              self.$emit("tFLOAT", self.$tok(self.ts, $rb_minus(self.te, 1)).$to_f(), self.ts, $rb_minus(self.te, 1));
+              tm = $rb_minus(p, 1);
+              diag_msg = "ivar_name";;
+              
+              self.te = p;
               p = $rb_minus(p, 1);
               
+              if ($truthy($rb_ge(self.version, 27))) {
+                self.$diagnostic("error", diag_msg, $hash2(["name"], {"name": self.$tok(tm, self.te)}), self.$range(tm, self.te))
+              } else {
+                
+                self.$emit("tCOLON", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
+                p = self.ts;
+              };
+              self.cs = 810;
+              
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;
-            };}
-            else if ((158)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            digits = self.$tok(self.ts, self.num_suffix_s);
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              continue;;;;;
+            } else if ($eqeqeq(351, $ret_or_1)) {
               
-              self.$emit("tFLOAT", self.$Float(digits), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits)
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((160)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit("tCONSTANT");
-            self.cs = self.$arg_or_cmdarg(cmd_state);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((164)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit("tIDENTIFIER");
-            if ($truthy((function() {if ($truthy(($ret_or_300 = self.static_env['$nil?']()['$!']()))) {
-              return self.static_env['$declared?'](self.$tok())
-            } else {
-              return $ret_or_300
-            }; return nil; })())) {
               
-              self.cs = 465;
+              tm = $rb_minus(p, 2);
+              diag_msg = "cvar_name";;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              if ($truthy($rb_ge(self.version, 27))) {
+                self.$diagnostic("error", diag_msg, $hash2(["name"], {"name": self.$tok(tm, self.te)}), self.$range(tm, self.te))
+              } else {
+                
+                self.$emit("tCOLON", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
+                p = self.ts;
+              };
+              self.cs = 810;
               
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;
-            } else {
+              continue;;;;;
+            } else if ($eqeqeq(359, $ret_or_1)) {
               
-              self.cs = self.$arg_or_cmdarg(cmd_state);
+              
+              self.escape = nil;;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
+              } else {
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
               
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;
-            };}
-            else if ((165)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            if (tm['$=='](self.te)) {
-              self.$emit("tFID")
-            } else {
+              continue;;;;;
+            } else if ($eqeqeq(389, $ret_or_1)) {
               
-              self.$emit("tIDENTIFIER", self.$tok(self.ts, tm), self.ts, tm);
-              p = $rb_minus(tm, 1);
-            };
-            self.cs = 494;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((167)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((168)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            self.cs = 563;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;};;}
-            else if ((244)['$===']($case)) {
-            
-            tm = $rb_minus(p, 2);;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tFID", self.$tok(self.ts, tm), self.ts, tm);
-            self.cs = self.$arg_or_cmdarg(cmd_state);
-            p = $rb_minus(tm, 1);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((339)['$===']($case)) {
-            
-            tm = $rb_minus(p, 2);;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1), tm), self.ts, tm);
-            p = $rb_minus(tm, 1);
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((311)['$===']($case)) {
-            
-            tm = $rb_minus(p, 2);;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;;}
-            else if ((425)['$===']($case)) {
-            
-            tm = $rb_minus(p, 2);;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            if (tm['$=='](self.te)) {
-              self.$emit("tFID")
-            } else {
               
-              self.$emit("tIDENTIFIER", self.$tok(self.ts, tm), self.ts, tm);
-              p = $rb_minus(tm, 1);
-            };
-            self.cs = 494;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((340)['$===']($case)) {
-            
-            tm = p;;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1), tm), self.ts, tm);
-            p = $rb_minus(tm, 1);
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((312)['$===']($case)) {
-            
-            tm = p;;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;;}
-            else if ((341)['$===']($case)) {
-            
-            tm = $rb_minus(p, 2);;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1), tm), self.ts, tm);
-            p = $rb_minus(tm, 1);
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((313)['$===']($case)) {
-            
-            tm = $rb_minus(p, 2);;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;;}
-            else if ((345)['$===']($case)) {
-            
-            tm = $rb_minus(p, 2);;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1), tm), self.ts, tm);
-            p = $rb_minus(tm, 1);
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((316)['$===']($case)) {
-            
-            tm = $rb_minus(p, 2);;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;;}
-            else if ((344)['$===']($case)) {
-            
-            tm = $rb_minus(p, 2);;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1), tm), self.ts, tm);
-            p = $rb_minus(tm, 1);
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((315)['$===']($case)) {
-            
-            tm = $rb_minus(p, 2);;
-            
-            $case = self.act;
-            if ((99)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit("tUNARY_NUM", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
-            p = $rb_minus(p, 1);
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((106)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$diagnostic("error", "unterminated_heredoc_id", nil, self.$range(self.ts, $rb_plus(self.ts, 1)));}
-            else if ((117)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            if ($truthy($rb_ge(self.version, 27))) {
+              tm = p;;
               
-              self.$emit("tPIPE", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
+              self.te = p;
               p = $rb_minus(p, 1);
-              self.cs = 563;
+              
+              self.$emit("kRESCUE", "rescue".$freeze(), self.ts, tm);
+              p = $rb_minus(tm, 1);
+              self.cs = 539;
               
               p = $rb_plus(p, 1);
               _goto_level = _out;
-              continue;;;
-            } else {
+              continue;;;;;
+            } else if ($eqeqeq(480, $ret_or_1)) {
+              
+              
+              self.num_base = 16;
+              self.num_digits_s = p;;
+              
+              self.num_suffix_s = p;;
+            } else if ($eqeqeq(474, $ret_or_1)) {
+              
+              
+              self.num_base = 10;
+              self.num_digits_s = p;;
+              
+              self.num_suffix_s = p;;
+            } else if ($eqeqeq(477, $ret_or_1)) {
+              
+              
+              self.num_base = 8;
+              self.num_digits_s = p;;
+              
+              self.num_suffix_s = p;;
+            } else if ($eqeqeq(471, $ret_or_1)) {
+              
+              
+              self.num_base = 2;
+              self.num_digits_s = p;;
+              
+              self.num_suffix_s = p;;
+            } else if ($eqeqeq(486, $ret_or_1)) {
+              
+              
+              self.num_base = 10;
+              self.num_digits_s = self.ts;;
+              
+              self.num_suffix_s = p;;
+            } else if ($eqeqeq(449, $ret_or_1)) {
+              
+              
+              self.num_base = 8;
+              self.num_digits_s = self.ts;;
+              
+              self.num_suffix_s = p;;
+            } else if ($eqeqeq(487, $ret_or_1)) {
+              
+              
+              self.num_suffix_s = p;;
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$17(chars){var self = $$17.$$s == null ? this : $$17.$$s;
+
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tINTEGER", chars);}, {$$arity: 1, $$s: self});;
+            } else if ($eqeqeq(8, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.newline_s = p;;
+            } else if ($eqeqeq(453, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.num_suffix_s = p;;
+            } else if ($eqeqeq(228, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.act = 43;;
+            } else if ($eqeqeq(215, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.act = 44;;
+            } else if ($eqeqeq(211, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.act = 45;;
+            } else if ($eqeqeq(27, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.act = 72;;
+            } else if ($eqeqeq(261, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.act = 73;;
+            } else if ($eqeqeq(28, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.act = 78;;
+            } else if ($eqeqeq(254, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.act = 79;;
+            } else if ($eqeqeq(281, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.act = 85;;
+            } else if ($eqeqeq(46, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
               
-              p = $rb_minus(p, 2);
+              self.act = 86;;
+            } else if ($eqeqeq(302, $ret_or_1)) {
               
-              self.cs = 810;
-              _goto_level = _again;
-              continue;;;
-            };}
-            else if ((121)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'PUNCTUATION_BEGIN'));
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((122)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit("kRESCUE", "rescue".$freeze(), self.ts, tm);
-            p = $rb_minus(tm, 1);
-            self.cs = 539;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((123)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit_table($$($nesting, 'KEYWORDS_BEGIN'));
-            self.command_start = true;
-            self.cs = 802;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;}
-            else if ((127)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;}
-            else if ((128)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            self.$emit("tIDENTIFIER");
-            if ($truthy((function() {if ($truthy(($ret_or_301 = self.static_env['$nil?']()['$!']()))) {
-              return self.static_env['$declared?'](self.$tok())
-            } else {
-              return $ret_or_301
-            }; return nil; })())) {
               
-              self.cs = 465;
+              self.te = $rb_plus(p, 1);;
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
+              self.act = 93;;
+            } else if ($eqeqeq(291, $ret_or_1)) {
               
-              self.cs = self.$arg_or_cmdarg(cmd_state);
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            };}
-            else if ((132)['$===']($case)) {
-            
-            p = $rb_minus(self.te, 1);;
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;};;}
-            else if ((342)['$===']($case)) {
-            
-            tm = $rb_minus(p, 3);;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1), tm), self.ts, tm);
-            p = $rb_minus(tm, 1);
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((314)['$===']($case)) {
-            
-            tm = $rb_minus(p, 3);;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            p = $rb_minus(self.ts, 1);
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;;}
-            else if ((343)['$===']($case)) {
-            
-            tm = $rb_minus(p, 2);;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tSYMBOL", self.$tok($rb_plus(self.ts, 1), tm), self.ts, tm);
-            p = $rb_minus(tm, 1);
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((490)['$===']($case)) {
-            
-            tm = $rb_minus(p, 2);;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tCONSTANT", self.$tok(self.ts, tm), self.ts, tm);
-            p = $rb_minus(tm, 1);
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((267)['$===']($case)) {
-            
-            self.cond.$push(false);
-            self.cmdarg.$push(false);
-            self.paren_nest = $rb_plus(self.paren_nest, 1);;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tLBRACK", "[".$freeze(), $rb_minus(self.te, 1), self.te);
-            self.cs = 563;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((386)['$===']($case)) {
-            
-            self.cond.$push(false);
-            self.cmdarg.$push(false);
-            self.paren_nest = $rb_plus(self.paren_nest, 1);;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tLBRACK", "[".$freeze());
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((493)['$===']($case)) {
-            
-            self.cond.$push(false);
-            self.cmdarg.$push(false);
-            self.paren_nest = $rb_plus(self.paren_nest, 1);;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tLBRACK2", "[".$freeze());
-            self.cs = 563;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((496)['$===']($case)) {
-            
-            self.paren_nest = $rb_minus(self.paren_nest, 1);;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            if ($truthy($rb_lt(self.version, 24))) {
+              self.te = $rb_plus(p, 1);;
               
-              self.cond.$lexpop();
-              self.cmdarg.$lexpop();
-            } else {
+              self.act = 94;;
+            } else if ($eqeqeq(70, $ret_or_1)) {
               
-              self.cond.$pop();
-              self.cmdarg.$pop();
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_302 = self.$tok()['$==']("}".$freeze())))) {
-              return $ret_or_302
-            } else {
-              return self.$tok()['$==']("]".$freeze())
-            }; return nil; })())) {
-              if ($truthy($rb_ge(self.version, 25))) {
-                self.cs = 810
-              } else {
-                self.cs = 531
-              }};
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((259)['$===']($case)) {
-            
-            self.cond.$push(false);
-            self.cmdarg.$push(false);
-            self.paren_nest = $rb_plus(self.paren_nest, 1);
-            if ($truthy(self['$version?'](18))) {
-              self.command_start = true};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            if ($truthy(self['$version?'](18))) {
               
-              self.$emit("tLPAREN2", "(".$freeze(), $rb_minus(self.te, 1), self.te);
-              self.cs = 802;
+              self.te = $rb_plus(p, 1);;
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
+              self.act = 106;;
+            } else if ($eqeqeq(394, $ret_or_1)) {
               
-              self.$emit("tLPAREN_ARG", "(".$freeze(), $rb_minus(self.te, 1), self.te);
-              self.cs = 563;
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            };;;}
-            else if ((272)['$===']($case)) {
-            
-            self.cond.$push(false);
-            self.cmdarg.$push(false);
-            self.paren_nest = $rb_plus(self.paren_nest, 1);
-            if ($truthy(self['$version?'](18))) {
-              self.command_start = true};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tLPAREN2", "(".$freeze());
-            self.cs = 563;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((280)['$===']($case)) {
-            
-            self.cond.$push(false);
-            self.cmdarg.$push(false);
-            self.paren_nest = $rb_plus(self.paren_nest, 1);
-            if ($truthy(self['$version?'](18))) {
-              self.command_start = true};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tLPAREN_ARG", "(".$freeze(), $rb_minus(self.te, 1), self.te);
-            if ($truthy(self['$version?'](18))) {
+              self.te = $rb_plus(p, 1);;
               
-              self.cs = 802;
+              self.act = 117;;
+            } else if ($eqeqeq(305, $ret_or_1)) {
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
               
-              self.cs = 563;
+              self.te = $rb_plus(p, 1);;
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            };;;}
-            else if ((328)['$===']($case)) {
-            
-            self.cond.$push(false);
-            self.cmdarg.$push(false);
-            self.paren_nest = $rb_plus(self.paren_nest, 1);
-            if ($truthy(self['$version?'](18))) {
-              self.command_start = true};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("tLPAREN", "(".$freeze());
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((437)['$===']($case)) {
-            
-            self.cond.$push(false);
-            self.cmdarg.$push(false);
-            self.paren_nest = $rb_plus(self.paren_nest, 1);
-            if ($truthy(self['$version?'](18))) {
-              self.command_start = true};;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            self.cs = 563;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((438)['$===']($case)) {
-            
-            self.paren_nest = $rb_minus(self.paren_nest, 1);;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit_table($$($nesting, 'PUNCTUATION'));
-            if ($truthy($rb_lt(self.version, 24))) {
+              self.act = 121;;
+            } else if ($eqeqeq(388, $ret_or_1)) {
               
-              self.cond.$lexpop();
-              self.cmdarg.$lexpop();
-            } else {
               
-              self.cond.$pop();
-              self.cmdarg.$pop();
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_303 = self.$tok()['$==']("}".$freeze())))) {
-              return $ret_or_303
-            } else {
-              return self.$tok()['$==']("]".$freeze())
-            }; return nil; })())) {
-              if ($truthy($rb_ge(self.version, 25))) {
-                self.cs = 810
-              } else {
-                self.cs = 531
-              }};
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((72)['$===']($case)) {
-            
-            heredoc_e = p;;
-            
-            self.newline_s = p;;}
-            else if ((353)['$===']($case)) {
-            
-            new_herebody_s = p;;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$tok(self.ts, heredoc_e)['$=~'](/^<<(-?)(~?)(["'`]?)(.*)\3$/m);
-            indent = (function() {if ($truthy(($ret_or_304 = (($b = $gvars['~']) === nil ? nil : $b['$[]'](1))['$empty?']()['$!']()))) {
-              return $ret_or_304
-            } else {
-              return (($b = $gvars['~']) === nil ? nil : $b['$[]'](2))['$empty?']()['$!']()
-            }; return nil; })();
-            dedent_body = (($b = $gvars['~']) === nil ? nil : $b['$[]'](2))['$empty?']()['$!']();
-            type = (function() {if ($truthy((($b = $gvars['~']) === nil ? nil : $b['$[]'](3))['$empty?']())) {
-              return "<<\"".$freeze()
-            } else {
+              self.te = $rb_plus(p, 1);;
               
-              return $rb_plus("<<".$freeze(), (($b = $gvars['~']) === nil ? nil : $b['$[]'](3)));
-            }; return nil; })();
-            delimiter = (($b = $gvars['~']) === nil ? nil : $b['$[]'](4));
-            if ($truthy($rb_ge(self.version, 27))) {
-              if ($truthy((function() {if ($truthy(($ret_or_305 = $rb_gt(delimiter.$count("\n"), 0)))) {
-                return $ret_or_305
-              } else {
-                return $rb_gt(delimiter.$count("\r"), 0)
-              }; return nil; })())) {
-                self.$diagnostic("error", "unterminated_heredoc_id", nil, self.$range(self.ts, $rb_plus(self.ts, 1)))}
-            } else if ($truthy($rb_ge(self.version, 24))) {
-              if ($truthy($rb_gt(delimiter.$count("\n"), 0))) {
-                if ($truthy(delimiter['$end_with?']("\n"))) {
-                  
-                  self.$diagnostic("warning", "heredoc_id_ends_with_nl", nil, self.$range(self.ts, $rb_plus(self.ts, 1)));
-                  delimiter = delimiter.$rstrip();
-                } else {
-                  self.$diagnostic("fatal", "heredoc_id_has_newline", nil, self.$range(self.ts, $rb_plus(self.ts, 1)))
-                }}};
-            if ($truthy((function() {if ($truthy(($ret_or_306 = dedent_body))) {
-              return self['$version?'](18, 19, 20, 21, 22)
-            } else {
-              return $ret_or_306
-            }; return nil; })())) {
+              self.act = 122;;
+            } else if ($eqeqeq(387, $ret_or_1)) {
               
-              self.$emit("tLSHFT", "<<".$freeze(), self.ts, $rb_plus(self.ts, 2));
-              p = $rb_plus(self.ts, 1);
-              self.cs = 563;
               
-              p = $rb_plus(p, 1);
-              _goto_level = _out;
-              continue;;;
-            } else {
+              self.te = $rb_plus(p, 1);;
               
-              self.cs = self.$push_literal(type, delimiter, self.ts, heredoc_e, indent, dedent_body);
-              self.herebody_s = (function() {if ($truthy(($ret_or_307 = self.herebody_s))) {
-                return $ret_or_307
-              } else {
-                return new_herebody_s
-              }; return nil; })();
-              p = $rb_minus(self.herebody_s, 1);
-            };;;}
-            else if ((348)['$===']($case)) {
-            
-            tm = $rb_minus(p, 1);
-            diag_msg = "ivar_name";;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            if ($truthy($rb_ge(self.version, 27))) {
-              self.$diagnostic("error", diag_msg, $hash2(["name"], {"name": self.$tok(tm, self.te)}), self.$range(tm, self.te))
-            } else {
+              self.act = 123;;
+            } else if ($eqeqeq(75, $ret_or_1)) {
               
-              self.$emit("tCOLON", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
-              p = self.ts;
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((351)['$===']($case)) {
-            
-            tm = $rb_minus(p, 2);
-            diag_msg = "cvar_name";;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            if ($truthy($rb_ge(self.version, 27))) {
-              self.$diagnostic("error", diag_msg, $hash2(["name"], {"name": self.$tok(tm, self.te)}), self.$range(tm, self.te))
-            } else {
               
-              self.$emit("tCOLON", self.$tok(self.ts, $rb_plus(self.ts, 1)), self.ts, $rb_plus(self.ts, 1));
-              p = self.ts;
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((359)['$===']($case)) {
-            
-            self.escape = nil;;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_308 = self.escape))) {
-              return $ret_or_308
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((389)['$===']($case)) {
-            
-            tm = p;;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            self.$emit("kRESCUE", "rescue".$freeze(), self.ts, tm);
-            p = $rb_minus(tm, 1);
-            self.cs = 539;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((480)['$===']($case)) {
-            
-            self.num_base = 16;
-            self.num_digits_s = p;;
-            
-            self.num_suffix_s = p;;}
-            else if ((474)['$===']($case)) {
-            
-            self.num_base = 10;
-            self.num_digits_s = p;;
-            
-            self.num_suffix_s = p;;}
-            else if ((477)['$===']($case)) {
-            
-            self.num_base = 8;
-            self.num_digits_s = p;;
-            
-            self.num_suffix_s = p;;}
-            else if ((471)['$===']($case)) {
-            
-            self.num_base = 2;
-            self.num_digits_s = p;;
-            
-            self.num_suffix_s = p;;}
-            else if ((486)['$===']($case)) {
-            
-            self.num_base = 10;
-            self.num_digits_s = self.ts;;
-            
-            self.num_suffix_s = p;;}
-            else if ((449)['$===']($case)) {
-            
-            self.num_base = 8;
-            self.num_digits_s = self.ts;;
-            
-            self.num_suffix_s = p;;}
-            else if ((487)['$===']($case)) {
-            
-            self.num_suffix_s = p;;
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$27 = function(chars){var self = $$27.$$s == null ? this : $$27.$$s;
-
+              self.te = $rb_plus(p, 1);;
               
+              self.act = 127;;
+            } else if ($eqeqeq(303, $ret_or_1)) {
               
-              if (chars == null) {
-                chars = nil;
-              };
-              return self.$emit("tINTEGER", chars);}, $$27.$$s = self, $$27.$$arity = 1, $$27));;}
-            else if ((8)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.newline_s = p;;}
-            else if ((453)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.num_suffix_s = p;;}
-            else if ((228)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 43;;}
-            else if ((215)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 44;;}
-            else if ((211)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 45;;}
-            else if ((27)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 72;;}
-            else if ((261)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 73;;}
-            else if ((28)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 78;;}
-            else if ((254)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 79;;}
-            else if ((281)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 85;;}
-            else if ((46)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 86;;}
-            else if ((302)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 93;;}
-            else if ((291)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 94;;}
-            else if ((70)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 106;;}
-            else if ((394)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 117;;}
-            else if ((305)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 121;;}
-            else if ((388)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 122;;}
-            else if ((387)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 123;;}
-            else if ((75)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 127;;}
-            else if ((303)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 128;;}
-            else if ((306)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 132;;}
-            else if ((504)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 145;;}
-            else if ((499)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 146;;}
-            else if ((507)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 148;;}
-            else if ((500)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 149;;}
-            else if ((501)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 150;;}
-            else if ((506)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 151;;}
-            else if ((498)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 152;;}
-            else if ((492)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 153;;}
-            else if ((418)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 154;;}
-            else if ((451)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 157;;}
-            else if ((82)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 158;;}
-            else if ((421)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 160;;}
-            else if ((412)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 164;;}
-            else if ((423)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 165;;}
-            else if ((416)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 167;;}
-            else if ((422)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 168;;}
-            else if ((88)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 181;;}
-            else if ((511)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.act = 185;;}
-            else if ((183)['$===']($case)) {
-            
-            self.newline_s = p;;
-            
-            self.te = $rb_plus(p, 1);
-            
-            current_literal = self.$literal();
-            if (self.te['$=='](pe)) {
-              self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))};
-            if ($truthy(current_literal['$heredoc?']())) {
               
-              line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
-              if ($truthy(self['$version?'](18, 19, 20))) {
-                line = line.$gsub(/\r.*$/, "".$freeze())};
-              if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
-                
-                self.herebody_s = self.te;
-                p = $rb_minus(current_literal.$heredoc_e(), 1);
-                self.cs = self.$pop_literal();
+              self.te = $rb_plus(p, 1);;
+              
+              self.act = 128;;
+            } else if ($eqeqeq(306, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.act = 132;;
+            } else if ($eqeqeq(504, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.act = 145;;
+            } else if ($eqeqeq(499, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.act = 146;;
+            } else if ($eqeqeq(507, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.act = 148;;
+            } else if ($eqeqeq(500, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.act = 149;;
+            } else if ($eqeqeq(501, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.act = 150;;
+            } else if ($eqeqeq(506, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.act = 151;;
+            } else if ($eqeqeq(498, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.act = 152;;
+            } else if ($eqeqeq(492, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.act = 153;;
+            } else if ($eqeqeq(418, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.act = 154;;
+            } else if ($eqeqeq(451, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.act = 157;;
+            } else if ($eqeqeq(82, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.act = 158;;
+            } else if ($eqeqeq(421, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.act = 160;;
+            } else if ($eqeqeq(412, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.act = 164;;
+            } else if ($eqeqeq(423, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.act = 165;;
+            } else if ($eqeqeq(416, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.act = 167;;
+            } else if ($eqeqeq(422, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.act = 168;;
+            } else if ($eqeqeq(88, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.act = 181;;
+            } else if ($eqeqeq(511, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.act = 185;;
+            } else if ($eqeqeq(183, $ret_or_1)) {
+              
+              
+              self.newline_s = p;;
+              
+              self.te = $rb_plus(p, 1);
+              
+              current_literal = self.$literal();
+              if ($eqeq(self.te, pe)) {
+                self.$diagnostic("fatal", "string_eof", nil, self.$range(current_literal.$str_s(), $rb_plus(current_literal.$str_s(), 1)))
+              };
+              if ($truthy(current_literal['$heredoc?']())) {
                 
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;
+                line = self.$tok(self.herebody_s, self.ts).$gsub(/\r+$/, "".$freeze());
+                if ($truthy(self['$version?'](18, 19, 20))) {
+                  line = line.$gsub(/\r.*$/, "".$freeze())
+                };
+                if ($truthy(current_literal.$nest_and_try_closing(line, self.herebody_s, self.ts))) {
+                  
+                  self.herebody_s = self.te;
+                  p = $rb_minus(current_literal.$heredoc_e(), 1);
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                } else {
+                  
+                  current_literal.$infer_indent_level(line);
+                  self.herebody_s = self.te;
+                };
               } else {
                 
-                current_literal.$infer_indent_level(line);
-                self.herebody_s = self.te;
+                if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
+                  
+                  self.cs = self.$pop_literal();
+                  
+                  p = $rb_plus(p, 1);
+                  _goto_level = _out;
+                  continue;;;
+                };
+                if ($truthy(self.herebody_s)) {
+                  
+                  p = $rb_minus(self.herebody_s, 1);
+                  self.herebody_s = nil;
+                };
               };
-            } else {
-              
-              if ($truthy(current_literal.$nest_and_try_closing(self.$tok(), self.ts, self.te))) {
-                
-                self.cs = self.$pop_literal();
-                
-                p = $rb_plus(p, 1);
-                _goto_level = _out;
-                continue;;;};
-              if ($truthy(self.herebody_s)) {
+              if (($truthy(current_literal['$words?']()) && ($not(self['$eof_codepoint?'](self.source_pts['$[]'](p)))))) {
+                current_literal.$extend_space(self.ts, self.te)
+              } else {
                 
-                p = $rb_minus(self.herebody_s, 1);
-                self.herebody_s = nil;};
-            };
-            if ($truthy((function() {if ($truthy(($ret_or_309 = current_literal['$words?']()))) {
-              return self['$eof_codepoint?'](self.source_pts['$[]'](p))['$!']()
-            } else {
-              return $ret_or_309
-            }; return nil; })())) {
-              current_literal.$extend_space(self.ts, self.te)
-            } else {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te);
+                current_literal.$flush_string();
+              };;;
               
-              current_literal.$extend_string(self.$tok(), self.ts, self.te);
-              current_literal.$flush_string();
-            };;;
-            
-            self.escape_s = p;
-            self.escape = nil;;}
-            else if ((124)['$===']($case)) {
-            
-            codepoint = self.source_pts['$[]']($rb_minus(p, 1));
-            if ($truthy((function() {if ($truthy(($ret_or_310 = $rb_ge(self.version, 30)))) {
+              self.escape_s = p;
+              self.escape = nil;;
+            } else if ($eqeqeq(124, $ret_or_1)) {
               
-              if ($truthy(($ret_or_311 = codepoint['$=='](117)))) {
-                return $ret_or_311
-              } else {
-                return codepoint['$=='](85)
-              };
-            } else {
-              return $ret_or_310
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};
-            if ($truthy((self.escape = $$($nesting, 'ESCAPES')['$[]'](codepoint))['$nil?']())) {
-              self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))};;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_312 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_312
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
-              } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_313 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_313
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_314 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_314
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_315 = (function() {if ($truthy(($ret_or_316 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_316
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_315
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_317 = self.escape))) {
-                return $ret_or_317
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((155)['$===']($case)) {
-            
-            codepoint = self.source_pts['$[]']($rb_minus(p, 1));
-            if ($truthy((function() {if ($truthy(($ret_or_318 = $rb_ge(self.version, 30)))) {
               
-              if ($truthy(($ret_or_319 = codepoint['$=='](117)))) {
-                return $ret_or_319
-              } else {
-                return codepoint['$=='](85)
+              codepoint = self.source_pts['$[]']($rb_minus(p, 1));
+              if (($truthy($rb_ge(self.version, 30)) && (($eqeq(codepoint, 117) || ($eqeq(codepoint, 85)))))) {
+                self.$diagnostic("fatal", "invalid_escape")
               };
-            } else {
-              return $ret_or_318
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};
-            if ($truthy((self.escape = $$($nesting, 'ESCAPES')['$[]'](codepoint))['$nil?']())) {
-              self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))};;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_320 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_320
-              }; return nil; })())) {
+              if ($truthy((self.escape = $$('ESCAPES')['$[]'](codepoint))['$nil?']())) {
+                self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))
+              };;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_321 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_321
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_322 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_322
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_323 = (function() {if ($truthy(($ret_or_324 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_324
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_323
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_325 = self.escape))) {
-                return $ret_or_325
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((369)['$===']($case)) {
-            
-            codepoint = self.source_pts['$[]']($rb_minus(p, 1));
-            if ($truthy((function() {if ($truthy(($ret_or_326 = $rb_ge(self.version, 30)))) {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(155, $ret_or_1)) {
               
-              if ($truthy(($ret_or_327 = codepoint['$=='](117)))) {
-                return $ret_or_327
-              } else {
-                return codepoint['$=='](85)
-              };
-            } else {
-              return $ret_or_326
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};
-            if ($truthy((self.escape = $$($nesting, 'ESCAPES')['$[]'](codepoint))['$nil?']())) {
-              self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))};;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_328 = self.escape))) {
-              return $ret_or_328
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((131)['$===']($case)) {
-            
-            codepoint = self.source_pts['$[]']($rb_minus(p, 1));
-            if ($truthy((function() {if ($truthy(($ret_or_329 = $rb_ge(self.version, 30)))) {
               
-              if ($truthy(($ret_or_330 = codepoint['$=='](117)))) {
-                return $ret_or_330
-              } else {
-                return codepoint['$=='](85)
+              codepoint = self.source_pts['$[]']($rb_minus(p, 1));
+              if (($truthy($rb_ge(self.version, 30)) && (($eqeq(codepoint, 117) || ($eqeq(codepoint, 85)))))) {
+                self.$diagnostic("fatal", "invalid_escape")
               };
-            } else {
-              return $ret_or_329
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};
-            if ($truthy((self.escape = $$($nesting, 'ESCAPES')['$[]'](codepoint))['$nil?']())) {
-              self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))};;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_331 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_331
-              }; return nil; })())) {
+              if ($truthy((self.escape = $$('ESCAPES')['$[]'](codepoint))['$nil?']())) {
+                self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))
+              };;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_332 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_332
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_333 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_333
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_334 = (function() {if ($truthy(($ret_or_335 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_335
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_334
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_336 = self.escape))) {
-                return $ret_or_336
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((162)['$===']($case)) {
-            
-            codepoint = self.source_pts['$[]']($rb_minus(p, 1));
-            if ($truthy((function() {if ($truthy(($ret_or_337 = $rb_ge(self.version, 30)))) {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(369, $ret_or_1)) {
               
-              if ($truthy(($ret_or_338 = codepoint['$=='](117)))) {
-                return $ret_or_338
-              } else {
-                return codepoint['$=='](85)
+              
+              codepoint = self.source_pts['$[]']($rb_minus(p, 1));
+              if (($truthy($rb_ge(self.version, 30)) && (($eqeq(codepoint, 117) || ($eqeq(codepoint, 85)))))) {
+                self.$diagnostic("fatal", "invalid_escape")
               };
-            } else {
-              return $ret_or_337
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};
-            if ($truthy((self.escape = $$($nesting, 'ESCAPES')['$[]'](codepoint))['$nil?']())) {
-              self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))};;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_339 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_339
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
-              } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_340 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_340
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_341 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_341
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_342 = (function() {if ($truthy(($ret_or_343 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_343
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_342
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_344 = self.escape))) {
-                return $ret_or_344
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((376)['$===']($case)) {
-            
-            codepoint = self.source_pts['$[]']($rb_minus(p, 1));
-            if ($truthy((function() {if ($truthy(($ret_or_345 = $rb_ge(self.version, 30)))) {
+              if ($truthy((self.escape = $$('ESCAPES')['$[]'](codepoint))['$nil?']())) {
+                self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))
+              };;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              if ($truthy(($ret_or_346 = codepoint['$=='](117)))) {
-                return $ret_or_346
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
               } else {
-                return codepoint['$=='](85)
+                self.$emit("tCHARACTER", value)
               };
-            } else {
-              return $ret_or_345
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};
-            if ($truthy((self.escape = $$($nesting, 'ESCAPES')['$[]'](codepoint))['$nil?']())) {
-              self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))};;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_347 = self.escape))) {
-              return $ret_or_347
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((122)['$===']($case)) {
-            
-            self.escape = self.source_buffer.$slice($rb_minus(p, 1)).$chr();
-            if ($truthy((function() {if ($truthy(($ret_or_348 = $rb_ge(self.version, 27)))) {
+              self.cs = 810;
               
-              if ($truthy(($ret_or_349 = $range(0, 8, false)['$include?'](self.escape.$ord())))) {
-                return $ret_or_349
-              } else {
-                return $range(14, 31, false)['$include?'](self.escape.$ord())
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(131, $ret_or_1)) {
+              
+              
+              codepoint = self.source_pts['$[]']($rb_minus(p, 1));
+              if (($truthy($rb_ge(self.version, 30)) && (($eqeq(codepoint, 117) || ($eqeq(codepoint, 85)))))) {
+                self.$diagnostic("fatal", "invalid_escape")
               };
-            } else {
-              return $ret_or_348
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_350 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_350
-              }; return nil; })())) {
+              if ($truthy((self.escape = $$('ESCAPES')['$[]'](codepoint))['$nil?']())) {
+                self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))
+              };;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_351 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_351
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_352 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_352
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_353 = (function() {if ($truthy(($ret_or_354 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_354
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_353
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_355 = self.escape))) {
-                return $ret_or_355
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((153)['$===']($case)) {
-            
-            self.escape = self.source_buffer.$slice($rb_minus(p, 1)).$chr();
-            if ($truthy((function() {if ($truthy(($ret_or_356 = $rb_ge(self.version, 27)))) {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(162, $ret_or_1)) {
               
-              if ($truthy(($ret_or_357 = $range(0, 8, false)['$include?'](self.escape.$ord())))) {
-                return $ret_or_357
-              } else {
-                return $range(14, 31, false)['$include?'](self.escape.$ord())
+              
+              codepoint = self.source_pts['$[]']($rb_minus(p, 1));
+              if (($truthy($rb_ge(self.version, 30)) && (($eqeq(codepoint, 117) || ($eqeq(codepoint, 85)))))) {
+                self.$diagnostic("fatal", "invalid_escape")
               };
-            } else {
-              return $ret_or_356
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_358 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_358
-              }; return nil; })())) {
+              if ($truthy((self.escape = $$('ESCAPES')['$[]'](codepoint))['$nil?']())) {
+                self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))
+              };;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_359 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_359
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_360 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_360
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_361 = (function() {if ($truthy(($ret_or_362 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_362
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_361
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_363 = self.escape))) {
-                return $ret_or_363
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((367)['$===']($case)) {
-            
-            self.escape = self.source_buffer.$slice($rb_minus(p, 1)).$chr();
-            if ($truthy((function() {if ($truthy(($ret_or_364 = $rb_ge(self.version, 27)))) {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(376, $ret_or_1)) {
               
-              if ($truthy(($ret_or_365 = $range(0, 8, false)['$include?'](self.escape.$ord())))) {
-                return $ret_or_365
-              } else {
-                return $range(14, 31, false)['$include?'](self.escape.$ord())
-              };
-            } else {
-              return $ret_or_364
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_366 = self.escape))) {
-              return $ret_or_366
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((130)['$===']($case)) {
-            
-            self.escape = self.source_buffer.$slice($rb_minus(p, 1)).$chr();
-            if ($truthy((function() {if ($truthy(($ret_or_367 = $rb_ge(self.version, 27)))) {
               
-              if ($truthy(($ret_or_368 = $range(0, 8, false)['$include?'](self.escape.$ord())))) {
-                return $ret_or_368
-              } else {
-                return $range(14, 31, false)['$include?'](self.escape.$ord())
+              codepoint = self.source_pts['$[]']($rb_minus(p, 1));
+              if (($truthy($rb_ge(self.version, 30)) && (($eqeq(codepoint, 117) || ($eqeq(codepoint, 85)))))) {
+                self.$diagnostic("fatal", "invalid_escape")
               };
-            } else {
-              return $ret_or_367
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_369 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_369
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
-              } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_370 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_370
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_371 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_371
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_372 = (function() {if ($truthy(($ret_or_373 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_373
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_372
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_374 = self.escape))) {
-                return $ret_or_374
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((161)['$===']($case)) {
-            
-            self.escape = self.source_buffer.$slice($rb_minus(p, 1)).$chr();
-            if ($truthy((function() {if ($truthy(($ret_or_375 = $rb_ge(self.version, 27)))) {
+              if ($truthy((self.escape = $$('ESCAPES')['$[]'](codepoint))['$nil?']())) {
+                self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))
+              };;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              if ($truthy(($ret_or_376 = $range(0, 8, false)['$include?'](self.escape.$ord())))) {
-                return $ret_or_376
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
               } else {
-                return $range(14, 31, false)['$include?'](self.escape.$ord())
+                self.$emit("tCHARACTER", value)
               };
-            } else {
-              return $ret_or_375
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_377 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_377
-              }; return nil; })())) {
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(122, $ret_or_1)) {
+              
+              
+              self.escape = self.source_buffer.$slice($rb_minus(p, 1)).$chr();
+              if (($truthy($rb_ge(self.version, 27)) && (($truthy($range(0, 8, false)['$include?'](self.escape.$ord())) || ($truthy($range(14, 31, false)['$include?'](self.escape.$ord()))))))) {
+                self.$diagnostic("fatal", "invalid_escape")
+              };;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_378 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_378
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_379 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_379
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_380 = (function() {if ($truthy(($ret_or_381 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_381
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_380
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_382 = self.escape))) {
-                return $ret_or_382
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(153, $ret_or_1)) {
+              
+              
+              self.escape = self.source_buffer.$slice($rb_minus(p, 1)).$chr();
+              if (($truthy($rb_ge(self.version, 27)) && (($truthy($range(0, 8, false)['$include?'](self.escape.$ord())) || ($truthy($range(14, 31, false)['$include?'](self.escape.$ord()))))))) {
+                self.$diagnostic("fatal", "invalid_escape")
+              };;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((375)['$===']($case)) {
-            
-            self.escape = self.source_buffer.$slice($rb_minus(p, 1)).$chr();
-            if ($truthy((function() {if ($truthy(($ret_or_383 = $rb_ge(self.version, 27)))) {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(367, $ret_or_1)) {
+              
+              
+              self.escape = self.source_buffer.$slice($rb_minus(p, 1)).$chr();
+              if (($truthy($rb_ge(self.version, 27)) && (($truthy($range(0, 8, false)['$include?'](self.escape.$ord())) || ($truthy($range(14, 31, false)['$include?'](self.escape.$ord()))))))) {
+                self.$diagnostic("fatal", "invalid_escape")
+              };;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
               
-              if ($truthy(($ret_or_384 = $range(0, 8, false)['$include?'](self.escape.$ord())))) {
-                return $ret_or_384
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
               } else {
-                return $range(14, 31, false)['$include?'](self.escape.$ord())
+                self.$emit("tCHARACTER", value)
               };
-            } else {
-              return $ret_or_383
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_385 = self.escape))) {
-              return $ret_or_385
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((126)['$===']($case)) {
-            
-            self.escape = "\u007F";;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_386 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_386
-              }; return nil; })())) {
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(130, $ret_or_1)) {
+              
+              
+              self.escape = self.source_buffer.$slice($rb_minus(p, 1)).$chr();
+              if (($truthy($rb_ge(self.version, 27)) && (($truthy($range(0, 8, false)['$include?'](self.escape.$ord())) || ($truthy($range(14, 31, false)['$include?'](self.escape.$ord()))))))) {
+                self.$diagnostic("fatal", "invalid_escape")
+              };;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_387 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_387
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_388 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_388
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_389 = (function() {if ($truthy(($ret_or_390 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_390
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_389
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_391 = self.escape))) {
-                return $ret_or_391
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((157)['$===']($case)) {
-            
-            self.escape = "\u007F";;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_392 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_392
-              }; return nil; })())) {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(161, $ret_or_1)) {
+              
+              
+              self.escape = self.source_buffer.$slice($rb_minus(p, 1)).$chr();
+              if (($truthy($rb_ge(self.version, 27)) && (($truthy($range(0, 8, false)['$include?'](self.escape.$ord())) || ($truthy($range(14, 31, false)['$include?'](self.escape.$ord()))))))) {
+                self.$diagnostic("fatal", "invalid_escape")
+              };;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_393 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_393
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_394 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_394
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_395 = (function() {if ($truthy(($ret_or_396 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_396
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_395
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_397 = self.escape))) {
-                return $ret_or_397
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((371)['$===']($case)) {
-            
-            self.escape = "\u007F";;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_398 = self.escape))) {
-              return $ret_or_398
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((129)['$===']($case)) {
-            
-            self.escape = self.$encode_escape(self.$tok($rb_minus(p, 2), p).$to_i(16));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_399 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(375, $ret_or_1)) {
+              
+              
+              self.escape = self.source_buffer.$slice($rb_minus(p, 1)).$chr();
+              if (($truthy($rb_ge(self.version, 27)) && (($truthy($range(0, 8, false)['$include?'](self.escape.$ord())) || ($truthy($range(14, 31, false)['$include?'](self.escape.$ord()))))))) {
+                self.$diagnostic("fatal", "invalid_escape")
+              };;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
               } else {
-                return $ret_or_399
-              }; return nil; })())) {
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(126, $ret_or_1)) {
+              
+              
+              self.escape = "\u007F";;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_400 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_400
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_401 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_401
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_402 = (function() {if ($truthy(($ret_or_403 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_403
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_402
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_404 = self.escape))) {
-                return $ret_or_404
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((160)['$===']($case)) {
-            
-            self.escape = self.$encode_escape(self.$tok($rb_minus(p, 2), p).$to_i(16));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_405 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_405
-              }; return nil; })())) {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(157, $ret_or_1)) {
+              
+              
+              self.escape = "\u007F";;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_406 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_406
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_407 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_407
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_408 = (function() {if ($truthy(($ret_or_409 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_409
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_408
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_410 = self.escape))) {
-                return $ret_or_410
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((374)['$===']($case)) {
-            
-            self.escape = self.$encode_escape(self.$tok($rb_minus(p, 2), p).$to_i(16));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_411 = self.escape))) {
-              return $ret_or_411
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((136)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(self.escape_s, 1), p));;
-            
-            self.$diagnostic("fatal", "unterminated_unicode", nil, self.$range($rb_minus(p, 1), p));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_412 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(371, $ret_or_1)) {
+              
+              
+              self.escape = "\u007F";;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
               } else {
-                return $ret_or_412
-              }; return nil; })())) {
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(129, $ret_or_1)) {
+              
+              
+              self.escape = self.$encode_escape(self.$tok($rb_minus(p, 2), p).$to_i(16));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_413 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_413
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_414 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_414
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_415 = (function() {if ($truthy(($ret_or_416 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_416
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_415
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_417 = self.escape))) {
-                return $ret_or_417
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(160, $ret_or_1)) {
+              
+              
+              self.escape = self.$encode_escape(self.$tok($rb_minus(p, 2), p).$to_i(16));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((167)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(self.escape_s, 1), p));;
-            
-            self.$diagnostic("fatal", "unterminated_unicode", nil, self.$range($rb_minus(p, 1), p));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_418 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(374, $ret_or_1)) {
+              
+              
+              self.escape = self.$encode_escape(self.$tok($rb_minus(p, 2), p).$to_i(16));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
               } else {
-                return $ret_or_418
-              }; return nil; })())) {
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(136, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(self.escape_s, 1), p));;
+              
+              self.$diagnostic("fatal", "unterminated_unicode", nil, self.$range($rb_minus(p, 1), p));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_419 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_419
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_420 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_420
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_421 = (function() {if ($truthy(($ret_or_422 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_422
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_421
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_423 = self.escape))) {
-                return $ret_or_423
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(167, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(self.escape_s, 1), p));;
+              
+              self.$diagnostic("fatal", "unterminated_unicode", nil, self.$range($rb_minus(p, 1), p));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((381)['$===']($case)) {
-            
-            self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(self.escape_s, 1), p));;
-            
-            self.$diagnostic("fatal", "unterminated_unicode", nil, self.$range($rb_minus(p, 1), p));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_424 = self.escape))) {
-              return $ret_or_424
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((116)['$===']($case)) {
-            
-            self.escape_s = p;
-            self.escape = nil;;
-            
-            self.$diagnostic("fatal", "escape_eof", nil, self.$range($rb_minus(p, 1), p));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_425 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(381, $ret_or_1)) {
+              
+              
+              self.$diagnostic("fatal", "invalid_unicode_escape", nil, self.$range($rb_minus(self.escape_s, 1), p));;
+              
+              self.$diagnostic("fatal", "unterminated_unicode", nil, self.$range($rb_minus(p, 1), p));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
               } else {
-                return $ret_or_425
-              }; return nil; })())) {
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(116, $ret_or_1)) {
+              
+              
+              self.escape_s = p;
+              self.escape = nil;;
+              
+              self.$diagnostic("fatal", "escape_eof", nil, self.$range($rb_minus(p, 1), p));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_426 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_426
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_427 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_427
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_428 = (function() {if ($truthy(($ret_or_429 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_429
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_428
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_430 = self.escape))) {
-                return $ret_or_430
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(148, $ret_or_1)) {
+              
+              
+              self.escape_s = p;
+              self.escape = nil;;
+              
+              self.$diagnostic("fatal", "escape_eof", nil, self.$range($rb_minus(p, 1), p));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((148)['$===']($case)) {
-            
-            self.escape_s = p;
-            self.escape = nil;;
-            
-            self.$diagnostic("fatal", "escape_eof", nil, self.$range($rb_minus(p, 1), p));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_431 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(362, $ret_or_1)) {
+              
+              
+              self.escape_s = p;
+              self.escape = nil;;
+              
+              self.$diagnostic("fatal", "escape_eof", nil, self.$range($rb_minus(p, 1), p));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
               } else {
-                return $ret_or_431
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(62, $ret_or_1)) {
+              
+              
+              self.sharp_s = $rb_minus(p, 1);;
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.newline_s = p;;
+            } else if ($eqeqeq(221, $ret_or_1)) {
+              
+              
+              self.sharp_s = $rb_minus(p, 1);;
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(236, $ret_or_1)) {
+              
+              
+              self.sharp_s = $rb_minus(p, 1);;
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(248, $ret_or_1)) {
+              
+              
+              self.sharp_s = $rb_minus(p, 1);;
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(270, $ret_or_1)) {
+              
+              
+              self.sharp_s = $rb_minus(p, 1);;
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              
+              self.cs = 810;
+              _goto_level = _again;
+              continue;;;;;
+            } else if ($eqeqeq(285, $ret_or_1)) {
+              
+              
+              self.sharp_s = $rb_minus(p, 1);;
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(297, $ret_or_1)) {
+              
+              
+              self.sharp_s = $rb_minus(p, 1);;
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(323, $ret_or_1)) {
+              
+              
+              self.sharp_s = $rb_minus(p, 1);;
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(399, $ret_or_1)) {
+              
+              
+              self.sharp_s = $rb_minus(p, 1);;
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(409, $ret_or_1)) {
+              
+              
+              self.sharp_s = $rb_minus(p, 1);;
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(430, $ret_or_1)) {
+              
+              
+              self.sharp_s = $rb_minus(p, 1);;
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(102, $ret_or_1)) {
+              
+              
+              self.sharp_s = $rb_minus(p, 1);;
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);;
+            } else if ($eqeqeq(482, $ret_or_1)) {
+              
+              
+              self.num_base = 10;
+              self.num_digits_s = self.ts;;
+              
+              self.num_suffix_s = p;;
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$18(chars){var self = $$18.$$s == null ? this : $$18.$$s;
+
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tINTEGER", chars);}, {$$arity: 1, $$s: self});;
+            } else if ($eqeqeq(446, $ret_or_1)) {
+              
+              
+              self.num_base = 8;
+              self.num_digits_s = self.ts;;
+              
+              self.num_suffix_s = p;;
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$19(chars){var self = $$19.$$s == null ? this : $$19.$$s;
+
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tINTEGER", chars);}, {$$arity: 1, $$s: self});;
+            } else if ($eqeqeq(461, $ret_or_1)) {
+              
+              
+              self.num_suffix_s = p;;
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$20(chars){var self = $$20.$$s == null ? this : $$20.$$s;
+
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tINTEGER", chars);}, {$$arity: 1, $$s: self});;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              digits = self.$tok(self.num_digits_s, self.num_suffix_s);
+              if ($truthy(digits['$end_with?']("_".$freeze()))) {
+                self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
+              } else if ((($truthy(digits['$empty?']()) && ($eqeq(self.num_base, 8))) && ($truthy(self['$version?'](18))))) {
+                digits = "0".$freeze()
+              } else if ($truthy(digits['$empty?']())) {
+                self.$diagnostic("error", "empty_numeric")
+              } else if (($eqeq(self.num_base, 8) && ($truthy((invalid_idx = digits.$index(/[89]/)))))) {
+                
+                invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
+                self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));
+              };
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_432 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_432
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_433 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_433
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_434 = (function() {if ($truthy(($ret_or_435 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_435
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_434
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_436 = self.escape))) {
-                return $ret_or_436
+                self.num_xfrm.$call(digits.$to_i(self.num_base))
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(454, $ret_or_1)) {
+              
+              
+              self.num_suffix_s = p;;
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$21(chars){var self = $$21.$$s == null ? this : $$21.$$s;
+
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tFLOAT", self.$Float(chars));}, {$$arity: 1, $$s: self});;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              digits = self.$tok(self.ts, self.num_suffix_s);
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tFLOAT", self.$Float(digits), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((362)['$===']($case)) {
-            
-            self.escape_s = p;
-            self.escape = nil;;
-            
-            self.$diagnostic("fatal", "escape_eof", nil, self.$range($rb_minus(p, 1), p));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_437 = self.escape))) {
-              return $ret_or_437
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((62)['$===']($case)) {
-            
-            self.sharp_s = $rb_minus(p, 1);;
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.newline_s = p;;}
-            else if ((221)['$===']($case)) {
-            
-            self.sharp_s = $rb_minus(p, 1);;
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((236)['$===']($case)) {
-            
-            self.sharp_s = $rb_minus(p, 1);;
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((248)['$===']($case)) {
-            
-            self.sharp_s = $rb_minus(p, 1);;
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((270)['$===']($case)) {
-            
-            self.sharp_s = $rb_minus(p, 1);;
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            
-            self.cs = 810;
-            _goto_level = _again;
-            continue;;;;;}
-            else if ((285)['$===']($case)) {
-            
-            self.sharp_s = $rb_minus(p, 1);;
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((297)['$===']($case)) {
-            
-            self.sharp_s = $rb_minus(p, 1);;
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((323)['$===']($case)) {
-            
-            self.sharp_s = $rb_minus(p, 1);;
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((399)['$===']($case)) {
-            
-            self.sharp_s = $rb_minus(p, 1);;
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((409)['$===']($case)) {
-            
-            self.sharp_s = $rb_minus(p, 1);;
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((430)['$===']($case)) {
-            
-            self.sharp_s = $rb_minus(p, 1);;
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((102)['$===']($case)) {
-            
-            self.sharp_s = $rb_minus(p, 1);;
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);;}
-            else if ((482)['$===']($case)) {
-            
-            self.num_base = 10;
-            self.num_digits_s = self.ts;;
-            
-            self.num_suffix_s = p;;
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$28 = function(chars){var self = $$28.$$s == null ? this : $$28.$$s;
+                self.num_xfrm.$call(digits)
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(450, $ret_or_1)) {
+              
+              
+              self.num_suffix_s = p;;
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$22(chars){var self = $$22.$$s == null ? this : $$22.$$s;
 
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tFLOAT", self.$Float(chars));}, {$$arity: 1, $$s: self});;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              digits = self.$tok(self.ts, self.num_suffix_s);
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tFLOAT", self.$Float(digits), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
+              } else {
+                self.num_xfrm.$call(digits)
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(276, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.newline_s = p;;
+              
+              self.act = 79;;
+            } else if ($eqeqeq(36, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.act = 78;;
+            } else if ($eqeqeq(47, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.act = 86;;
+            } else if ($eqeqeq(94, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              self.act = 181;;
+            } else if ($eqeqeq(66, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.act = 99;;
+            } else if ($eqeqeq(85, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.act = 147;;
+            } else if ($eqeqeq(93, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
               
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
               
-              if (chars == null) {
-                chars = nil;
-              };
-              return self.$emit("tINTEGER", chars);}, $$28.$$s = self, $$28.$$arity = 1, $$28));;}
-            else if ((446)['$===']($case)) {
-            
-            self.num_base = 8;
-            self.num_digits_s = self.ts;;
-            
-            self.num_suffix_s = p;;
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$29 = function(chars){var self = $$29.$$s == null ? this : $$29.$$s;
-
+              self.act = 181;;
+            } else if ($eqeqeq(38, $ret_or_1)) {
               
               
-              if (chars == null) {
-                chars = nil;
-              };
-              return self.$emit("tINTEGER", chars);}, $$29.$$s = self, $$29.$$arity = 1, $$29));;}
-            else if ((461)['$===']($case)) {
-            
-            self.num_suffix_s = p;;
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$30 = function(chars){var self = $$30.$$s == null ? this : $$30.$$s;
-
+              self.te = $rb_plus(p, 1);;
               
+              tm = p;;
               
-              if (chars == null) {
-                chars = nil;
-              };
-              return self.$emit("tINTEGER", chars);}, $$30.$$s = self, $$30.$$arity = 1, $$30));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            digits = self.$tok(self.num_digits_s, self.num_suffix_s);
-            if ($truthy(digits['$end_with?']("_".$freeze()))) {
-              self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
-            } else if ($truthy((function() {if ($truthy(($ret_or_438 = (function() {if ($truthy(($ret_or_439 = digits['$empty?']()))) {
-              return self.num_base['$=='](8)
-            } else {
-              return $ret_or_439
-            }; return nil; })()))) {
-              return self['$version?'](18)
-            } else {
-              return $ret_or_438
-            }; return nil; })())) {
-              digits = "0".$freeze()
-            } else if ($truthy(digits['$empty?']())) {
-              self.$diagnostic("error", "empty_numeric")
-            } else if ($truthy((function() {if ($truthy(($ret_or_440 = self.num_base['$=='](8)))) {
-              
-              return (invalid_idx = digits.$index(/[89]/));
-            } else {
-              return $ret_or_440
-            }; return nil; })())) {
+              self.act = 73;;
+            } else if ($eqeqeq(391, $ret_or_1)) {
               
-              invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
-              self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));};
-            if ($truthy(self['$version?'](18, 19, 20))) {
               
-              self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits.$to_i(self.num_base))
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((454)['$===']($case)) {
-            
-            self.num_suffix_s = p;;
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$31 = function(chars){var self = $$31.$$s == null ? this : $$31.$$s;
-
+              self.te = $rb_plus(p, 1);;
               
+              tm = p;;
               
-              if (chars == null) {
-                chars = nil;
-              };
-              return self.$emit("tFLOAT", self.$Float(chars));}, $$31.$$s = self, $$31.$$arity = 1, $$31));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            digits = self.$tok(self.ts, self.num_suffix_s);
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              self.act = 127;;
+            } else if ($eqeqeq(390, $ret_or_1)) {
               
-              self.$emit("tFLOAT", self.$Float(digits), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits)
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((450)['$===']($case)) {
-            
-            self.num_suffix_s = p;;
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$32 = function(chars){var self = $$32.$$s == null ? this : $$32.$$s;
-
               
+              self.te = $rb_plus(p, 1);;
               
-              if (chars == null) {
-                chars = nil;
-              };
-              return self.$emit("tFLOAT", self.$Float(chars));}, $$32.$$s = self, $$32.$$arity = 1, $$32));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            digits = self.$tok(self.ts, self.num_suffix_s);
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              tm = p;;
               
-              self.$emit("tFLOAT", self.$Float(digits), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits)
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((276)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.newline_s = p;;
-            
-            self.act = 79;;}
-            else if ((36)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            if ($truthy(self.herebody_s)) {
+              self.act = 128;;
+            } else if ($eqeqeq(483, $ret_or_1)) {
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.act = 78;;}
-            else if ((47)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            if ($truthy(self.herebody_s)) {
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.act = 86;;}
-            else if ((94)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            if ($truthy(self.herebody_s)) {
+              self.te = $rb_plus(p, 1);;
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            self.act = 181;;}
-            else if ((66)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.act = 99;;}
-            else if ((85)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.act = 147;;}
-            else if ((93)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.act = 181;;}
-            else if ((38)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            tm = p;;
-            
-            self.act = 73;;}
-            else if ((391)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            tm = p;;
-            
-            self.act = 127;;}
-            else if ((390)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            tm = p;;
-            
-            self.act = 128;;}
-            else if ((483)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.num_base = 10;
-            self.num_digits_s = self.ts;;
-            
-            self.act = 154;;}
-            else if ((127)['$===']($case)) {
-            
-            codepoint = self.source_pts['$[]']($rb_minus(p, 1));
-            if ($truthy((function() {if ($truthy(($ret_or_441 = $rb_ge(self.version, 30)))) {
+              self.num_base = 10;
+              self.num_digits_s = self.ts;;
               
-              if ($truthy(($ret_or_442 = codepoint['$=='](117)))) {
-                return $ret_or_442
-              } else {
-                return codepoint['$=='](85)
+              self.act = 154;;
+            } else if ($eqeqeq(127, $ret_or_1)) {
+              
+              
+              codepoint = self.source_pts['$[]']($rb_minus(p, 1));
+              if (($truthy($rb_ge(self.version, 30)) && (($eqeq(codepoint, 117) || ($eqeq(codepoint, 85)))))) {
+                self.$diagnostic("fatal", "invalid_escape")
               };
-            } else {
-              return $ret_or_441
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};
-            if ($truthy((self.escape = $$($nesting, 'ESCAPES')['$[]'](codepoint))['$nil?']())) {
-              self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))};;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_443 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_443
-              }; return nil; })())) {
+              if ($truthy((self.escape = $$('ESCAPES')['$[]'](codepoint))['$nil?']())) {
+                self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))
+              };;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_444 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_444
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_445 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_445
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_446 = (function() {if ($truthy(($ret_or_447 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_447
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_446
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_448 = self.escape))) {
-                return $ret_or_448
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((158)['$===']($case)) {
-            
-            codepoint = self.source_pts['$[]']($rb_minus(p, 1));
-            if ($truthy((function() {if ($truthy(($ret_or_449 = $rb_ge(self.version, 30)))) {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(158, $ret_or_1)) {
               
-              if ($truthy(($ret_or_450 = codepoint['$=='](117)))) {
-                return $ret_or_450
-              } else {
-                return codepoint['$=='](85)
+              
+              codepoint = self.source_pts['$[]']($rb_minus(p, 1));
+              if (($truthy($rb_ge(self.version, 30)) && (($eqeq(codepoint, 117) || ($eqeq(codepoint, 85)))))) {
+                self.$diagnostic("fatal", "invalid_escape")
               };
-            } else {
-              return $ret_or_449
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};
-            if ($truthy((self.escape = $$($nesting, 'ESCAPES')['$[]'](codepoint))['$nil?']())) {
-              self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))};;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_451 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_451
-              }; return nil; })())) {
+              if ($truthy((self.escape = $$('ESCAPES')['$[]'](codepoint))['$nil?']())) {
+                self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))
+              };;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_452 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_452
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_453 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_453
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_454 = (function() {if ($truthy(($ret_or_455 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_455
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_454
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_456 = self.escape))) {
-                return $ret_or_456
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((372)['$===']($case)) {
-            
-            codepoint = self.source_pts['$[]']($rb_minus(p, 1));
-            if ($truthy((function() {if ($truthy(($ret_or_457 = $rb_ge(self.version, 30)))) {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(372, $ret_or_1)) {
               
-              if ($truthy(($ret_or_458 = codepoint['$=='](117)))) {
-                return $ret_or_458
-              } else {
-                return codepoint['$=='](85)
+              
+              codepoint = self.source_pts['$[]']($rb_minus(p, 1));
+              if (($truthy($rb_ge(self.version, 30)) && (($eqeq(codepoint, 117) || ($eqeq(codepoint, 85)))))) {
+                self.$diagnostic("fatal", "invalid_escape")
               };
-            } else {
-              return $ret_or_457
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};
-            if ($truthy((self.escape = $$($nesting, 'ESCAPES')['$[]'](codepoint))['$nil?']())) {
-              self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))};;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_459 = self.escape))) {
-              return $ret_or_459
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((125)['$===']($case)) {
-            
-            self.escape = self.source_buffer.$slice($rb_minus(p, 1)).$chr();
-            if ($truthy((function() {if ($truthy(($ret_or_460 = $rb_ge(self.version, 27)))) {
+              if ($truthy((self.escape = $$('ESCAPES')['$[]'](codepoint))['$nil?']())) {
+                self.escape = self.$encode_escape(self.source_buffer.$slice($rb_minus(p, 1)))
+              };;
               
-              if ($truthy(($ret_or_461 = $range(0, 8, false)['$include?'](self.escape.$ord())))) {
-                return $ret_or_461
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
               } else {
-                return $range(14, 31, false)['$include?'](self.escape.$ord())
+                self.$emit("tCHARACTER", value)
               };
-            } else {
-              return $ret_or_460
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_462 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_462
-              }; return nil; })())) {
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(125, $ret_or_1)) {
+              
+              
+              self.escape = self.source_buffer.$slice($rb_minus(p, 1)).$chr();
+              if (($truthy($rb_ge(self.version, 27)) && (($truthy($range(0, 8, false)['$include?'](self.escape.$ord())) || ($truthy($range(14, 31, false)['$include?'](self.escape.$ord()))))))) {
+                self.$diagnostic("fatal", "invalid_escape")
+              };;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_463 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_463
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_464 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_464
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_465 = (function() {if ($truthy(($ret_or_466 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_466
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_465
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_467 = self.escape))) {
-                return $ret_or_467
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((156)['$===']($case)) {
-            
-            self.escape = self.source_buffer.$slice($rb_minus(p, 1)).$chr();
-            if ($truthy((function() {if ($truthy(($ret_or_468 = $rb_ge(self.version, 27)))) {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(156, $ret_or_1)) {
               
-              if ($truthy(($ret_or_469 = $range(0, 8, false)['$include?'](self.escape.$ord())))) {
-                return $ret_or_469
-              } else {
-                return $range(14, 31, false)['$include?'](self.escape.$ord())
-              };
-            } else {
-              return $ret_or_468
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_470 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_470
-              }; return nil; })())) {
+              
+              self.escape = self.source_buffer.$slice($rb_minus(p, 1)).$chr();
+              if (($truthy($rb_ge(self.version, 27)) && (($truthy($range(0, 8, false)['$include?'](self.escape.$ord())) || ($truthy($range(14, 31, false)['$include?'](self.escape.$ord()))))))) {
+                self.$diagnostic("fatal", "invalid_escape")
+              };;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_471 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_471
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_472 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_472
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_473 = (function() {if ($truthy(($ret_or_474 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_474
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_473
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_475 = self.escape))) {
-                return $ret_or_475
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((370)['$===']($case)) {
-            
-            self.escape = self.source_buffer.$slice($rb_minus(p, 1)).$chr();
-            if ($truthy((function() {if ($truthy(($ret_or_476 = $rb_ge(self.version, 27)))) {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(370, $ret_or_1)) {
+              
               
-              if ($truthy(($ret_or_477 = $range(0, 8, false)['$include?'](self.escape.$ord())))) {
-                return $ret_or_477
+              self.escape = self.source_buffer.$slice($rb_minus(p, 1)).$chr();
+              if (($truthy($rb_ge(self.version, 27)) && (($truthy($range(0, 8, false)['$include?'](self.escape.$ord())) || ($truthy($range(14, 31, false)['$include?'](self.escape.$ord()))))))) {
+                self.$diagnostic("fatal", "invalid_escape")
+              };;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
               } else {
-                return $range(14, 31, false)['$include?'](self.escape.$ord())
+                self.$emit("tCHARACTER", value)
               };
-            } else {
-              return $ret_or_476
-            }; return nil; })())) {
-              self.$diagnostic("fatal", "invalid_escape")};;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_478 = self.escape))) {
-              return $ret_or_478
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((132)['$===']($case)) {
-            
-            self.escape = self.$encode_escape(self.$tok($rb_minus(p, 2), p).$to_i(16));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_479 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_479
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
-              } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_480 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_480
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_481 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_481
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_482 = (function() {if ($truthy(($ret_or_483 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_483
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_482
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_484 = self.escape))) {
-                return $ret_or_484
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((163)['$===']($case)) {
-            
-            self.escape = self.$encode_escape(self.$tok($rb_minus(p, 2), p).$to_i(16));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_485 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
-              } else {
-                return $ret_or_485
-              }; return nil; })())) {
-                current_literal.$extend_string(self.$tok(), self.ts, self.te)
-              } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_486 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_486
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_487 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_487
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_488 = (function() {if ($truthy(($ret_or_489 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_489
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_488
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_490 = self.escape))) {
-                return $ret_or_490
-              } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((377)['$===']($case)) {
-            
-            self.escape = self.$encode_escape(self.$tok($rb_minus(p, 2), p).$to_i(16));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_491 = self.escape))) {
-              return $ret_or_491
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((128)['$===']($case)) {
-            
-            self.escape = self.$encode_escape(self.$tok($rb_minus(p, 2), p).$to_i(16));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_492 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(132, $ret_or_1)) {
+              
+              
+              self.escape = self.$encode_escape(self.$tok($rb_minus(p, 2), p).$to_i(16));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                return $ret_or_492
-              }; return nil; })())) {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(163, $ret_or_1)) {
+              
+              
+              self.escape = self.$encode_escape(self.$tok($rb_minus(p, 2), p).$to_i(16));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_493 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_493
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_494 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_494
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_495 = (function() {if ($truthy(($ret_or_496 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_496
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_495
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_497 = self.escape))) {
-                return $ret_or_497
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(377, $ret_or_1)) {
+              
+              
+              self.escape = self.$encode_escape(self.$tok($rb_minus(p, 2), p).$to_i(16));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((159)['$===']($case)) {
-            
-            self.escape = self.$encode_escape(self.$tok($rb_minus(p, 2), p).$to_i(16));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            current_literal = self.$literal();
-            escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
-            if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
-              if ($truthy((function() {if ($truthy(($ret_or_498 = current_literal['$regexp?']()))) {
-                return $$($nesting, 'REGEXP_META_CHARACTERS').$match(escaped_char)
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(128, $ret_or_1)) {
+              
+              
+              self.escape = self.$encode_escape(self.$tok($rb_minus(p, 2), p).$to_i(16));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                return $ret_or_498
-              }; return nil; })())) {
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(159, $ret_or_1)) {
+              
+              
+              self.escape = self.$encode_escape(self.$tok($rb_minus(p, 2), p).$to_i(16));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              current_literal = self.$literal();
+              escaped_char = self.source_buffer.$slice(self.escape_s).$chr();
+              if ($truthy(current_literal['$munge_escape?'](escaped_char))) {
+                if (($truthy(current_literal['$regexp?']()) && ($truthy($$('REGEXP_META_CHARACTERS').$match(escaped_char))))) {
+                  current_literal.$extend_string(self.$tok(), self.ts, self.te)
+                } else {
+                  current_literal.$extend_string(escaped_char, self.ts, self.te)
+                }
+              } else if (($truthy(current_literal['$squiggly_heredoc?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
                 current_literal.$extend_string(self.$tok(), self.ts, self.te)
+              } else if (($truthy(current_literal['$supports_line_continuation_via_slash?']()) && ($eqeq(escaped_char, "\n".$freeze())))) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
+              } else if ((($truthy(current_literal['$regexp?']()) && ($truthy($rb_ge(self.version, 31)))) && ($truthy(["c", "C", "m", "M"]['$include?'](escaped_char))))) {
+                current_literal.$extend_string(self.escape, self.ts, self.te)
+              } else if ($truthy(current_literal['$regexp?']())) {
+                current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
               } else {
-                current_literal.$extend_string(escaped_char, self.ts, self.te)
-              }
-            } else if ($truthy((function() {if ($truthy(($ret_or_499 = current_literal['$squiggly_heredoc?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_499
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok(), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_500 = current_literal['$supports_line_continuation_via_slash?']()))) {
-              return escaped_char['$==']("\n".$freeze())
-            } else {
-              return $ret_or_500
-            }; return nil; })())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else if ($truthy((function() {if ($truthy(($ret_or_501 = (function() {if ($truthy(($ret_or_502 = current_literal['$regexp?']()))) {
-              return $rb_ge(self.version, 31)
-            } else {
-              return $ret_or_502
-            }; return nil; })()))) {
-              return ["c", "C", "m", "M"]['$include?'](escaped_char)
-            } else {
-              return $ret_or_501
-            }; return nil; })())) {
-              current_literal.$extend_string(self.escape, self.ts, self.te)
-            } else if ($truthy(current_literal['$regexp?']())) {
-              current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(), "".$freeze()), self.ts, self.te)
-            } else {
-              current_literal.$extend_string((function() {if ($truthy(($ret_or_503 = self.escape))) {
-                return $ret_or_503
+                current_literal.$extend_string(($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok())), self.ts, self.te)
+              };;;
+            } else if ($eqeqeq(373, $ret_or_1)) {
+              
+              
+              self.escape = self.$encode_escape(self.$tok($rb_minus(p, 2), p).$to_i(16));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
+              
+              self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              value = ($truthy(($ret_or_2 = self.escape)) ? ($ret_or_2) : (self.$tok($rb_plus(self.ts, 1))));
+              if ($truthy(self['$version?'](18))) {
+                self.$emit("tINTEGER", value.$getbyte(0))
               } else {
-                return self.$tok()
-              }; return nil; })(), self.ts, self.te)
-            };;;}
-            else if ((373)['$===']($case)) {
-            
-            self.escape = self.$encode_escape(self.$tok($rb_minus(p, 2), p).$to_i(16));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$&'](159));;
-            
-            self.escape = self.$encode_escape(self.escape['$[]'](0).$ord()['$|'](128));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            value = (function() {if ($truthy(($ret_or_504 = self.escape))) {
-              return $ret_or_504
-            } else {
-              return self.$tok($rb_plus(self.ts, 1))
-            }; return nil; })();
-            if ($truthy(self['$version?'](18))) {
-              self.$emit("tINTEGER", value.$getbyte(0))
-            } else {
-              self.$emit("tCHARACTER", value)
-            };
-            self.cs = 810;
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((478)['$===']($case)) {
-            
-            self.num_base = 16;
-            self.num_digits_s = p;;
-            
-            self.num_suffix_s = p;;
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$33 = function(chars){var self = $$33.$$s == null ? this : $$33.$$s;
+                self.$emit("tCHARACTER", value)
+              };
+              self.cs = 810;
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(478, $ret_or_1)) {
+              
+              
+              self.num_base = 16;
+              self.num_digits_s = p;;
+              
+              self.num_suffix_s = p;;
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$23(chars){var self = $$23.$$s == null ? this : $$23.$$s;
 
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tINTEGER", chars);}, {$$arity: 1, $$s: self});;
               
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              if (chars == null) {
-                chars = nil;
+              digits = self.$tok(self.num_digits_s, self.num_suffix_s);
+              if ($truthy(digits['$end_with?']("_".$freeze()))) {
+                self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
+              } else if ((($truthy(digits['$empty?']()) && ($eqeq(self.num_base, 8))) && ($truthy(self['$version?'](18))))) {
+                digits = "0".$freeze()
+              } else if ($truthy(digits['$empty?']())) {
+                self.$diagnostic("error", "empty_numeric")
+              } else if (($eqeq(self.num_base, 8) && ($truthy((invalid_idx = digits.$index(/[89]/)))))) {
+                
+                invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
+                self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));
+              };
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
+              } else {
+                self.num_xfrm.$call(digits.$to_i(self.num_base))
               };
-              return self.$emit("tINTEGER", chars);}, $$33.$$s = self, $$33.$$arity = 1, $$33));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            digits = self.$tok(self.num_digits_s, self.num_suffix_s);
-            if ($truthy(digits['$end_with?']("_".$freeze()))) {
-              self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
-            } else if ($truthy((function() {if ($truthy(($ret_or_505 = (function() {if ($truthy(($ret_or_506 = digits['$empty?']()))) {
-              return self.num_base['$=='](8)
-            } else {
-              return $ret_or_506
-            }; return nil; })()))) {
-              return self['$version?'](18)
-            } else {
-              return $ret_or_505
-            }; return nil; })())) {
-              digits = "0".$freeze()
-            } else if ($truthy(digits['$empty?']())) {
-              self.$diagnostic("error", "empty_numeric")
-            } else if ($truthy((function() {if ($truthy(($ret_or_507 = self.num_base['$=='](8)))) {
-              
-              return (invalid_idx = digits.$index(/[89]/));
-            } else {
-              return $ret_or_507
-            }; return nil; })())) {
               
-              invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
-              self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));};
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(472, $ret_or_1)) {
               
-              self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits.$to_i(self.num_base))
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((472)['$===']($case)) {
-            
-            self.num_base = 10;
-            self.num_digits_s = p;;
-            
-            self.num_suffix_s = p;;
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$34 = function(chars){var self = $$34.$$s == null ? this : $$34.$$s;
+              
+              self.num_base = 10;
+              self.num_digits_s = p;;
+              
+              self.num_suffix_s = p;;
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$24(chars){var self = $$24.$$s == null ? this : $$24.$$s;
 
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tINTEGER", chars);}, {$$arity: 1, $$s: self});;
               
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              if (chars == null) {
-                chars = nil;
+              digits = self.$tok(self.num_digits_s, self.num_suffix_s);
+              if ($truthy(digits['$end_with?']("_".$freeze()))) {
+                self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
+              } else if ((($truthy(digits['$empty?']()) && ($eqeq(self.num_base, 8))) && ($truthy(self['$version?'](18))))) {
+                digits = "0".$freeze()
+              } else if ($truthy(digits['$empty?']())) {
+                self.$diagnostic("error", "empty_numeric")
+              } else if (($eqeq(self.num_base, 8) && ($truthy((invalid_idx = digits.$index(/[89]/)))))) {
+                
+                invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
+                self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));
               };
-              return self.$emit("tINTEGER", chars);}, $$34.$$s = self, $$34.$$arity = 1, $$34));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            digits = self.$tok(self.num_digits_s, self.num_suffix_s);
-            if ($truthy(digits['$end_with?']("_".$freeze()))) {
-              self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
-            } else if ($truthy((function() {if ($truthy(($ret_or_508 = (function() {if ($truthy(($ret_or_509 = digits['$empty?']()))) {
-              return self.num_base['$=='](8)
-            } else {
-              return $ret_or_509
-            }; return nil; })()))) {
-              return self['$version?'](18)
-            } else {
-              return $ret_or_508
-            }; return nil; })())) {
-              digits = "0".$freeze()
-            } else if ($truthy(digits['$empty?']())) {
-              self.$diagnostic("error", "empty_numeric")
-            } else if ($truthy((function() {if ($truthy(($ret_or_510 = self.num_base['$=='](8)))) {
-              
-              return (invalid_idx = digits.$index(/[89]/));
-            } else {
-              return $ret_or_510
-            }; return nil; })())) {
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
+              } else {
+                self.num_xfrm.$call(digits.$to_i(self.num_base))
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(475, $ret_or_1)) {
               
-              invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
-              self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));};
-            if ($truthy(self['$version?'](18, 19, 20))) {
               
-              self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits.$to_i(self.num_base))
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((475)['$===']($case)) {
-            
-            self.num_base = 8;
-            self.num_digits_s = p;;
-            
-            self.num_suffix_s = p;;
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$35 = function(chars){var self = $$35.$$s == null ? this : $$35.$$s;
+              self.num_base = 8;
+              self.num_digits_s = p;;
+              
+              self.num_suffix_s = p;;
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$25(chars){var self = $$25.$$s == null ? this : $$25.$$s;
 
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tINTEGER", chars);}, {$$arity: 1, $$s: self});;
               
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              if (chars == null) {
-                chars = nil;
+              digits = self.$tok(self.num_digits_s, self.num_suffix_s);
+              if ($truthy(digits['$end_with?']("_".$freeze()))) {
+                self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
+              } else if ((($truthy(digits['$empty?']()) && ($eqeq(self.num_base, 8))) && ($truthy(self['$version?'](18))))) {
+                digits = "0".$freeze()
+              } else if ($truthy(digits['$empty?']())) {
+                self.$diagnostic("error", "empty_numeric")
+              } else if (($eqeq(self.num_base, 8) && ($truthy((invalid_idx = digits.$index(/[89]/)))))) {
+                
+                invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
+                self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));
               };
-              return self.$emit("tINTEGER", chars);}, $$35.$$s = self, $$35.$$arity = 1, $$35));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            digits = self.$tok(self.num_digits_s, self.num_suffix_s);
-            if ($truthy(digits['$end_with?']("_".$freeze()))) {
-              self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
-            } else if ($truthy((function() {if ($truthy(($ret_or_511 = (function() {if ($truthy(($ret_or_512 = digits['$empty?']()))) {
-              return self.num_base['$=='](8)
-            } else {
-              return $ret_or_512
-            }; return nil; })()))) {
-              return self['$version?'](18)
-            } else {
-              return $ret_or_511
-            }; return nil; })())) {
-              digits = "0".$freeze()
-            } else if ($truthy(digits['$empty?']())) {
-              self.$diagnostic("error", "empty_numeric")
-            } else if ($truthy((function() {if ($truthy(($ret_or_513 = self.num_base['$=='](8)))) {
-              
-              return (invalid_idx = digits.$index(/[89]/));
-            } else {
-              return $ret_or_513
-            }; return nil; })())) {
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
+              } else {
+                self.num_xfrm.$call(digits.$to_i(self.num_base))
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(469, $ret_or_1)) {
               
-              invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
-              self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));};
-            if ($truthy(self['$version?'](18, 19, 20))) {
               
-              self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits.$to_i(self.num_base))
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((469)['$===']($case)) {
-            
-            self.num_base = 2;
-            self.num_digits_s = p;;
-            
-            self.num_suffix_s = p;;
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$36 = function(chars){var self = $$36.$$s == null ? this : $$36.$$s;
+              self.num_base = 2;
+              self.num_digits_s = p;;
+              
+              self.num_suffix_s = p;;
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$26(chars){var self = $$26.$$s == null ? this : $$26.$$s;
 
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tINTEGER", chars);}, {$$arity: 1, $$s: self});;
               
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              if (chars == null) {
-                chars = nil;
+              digits = self.$tok(self.num_digits_s, self.num_suffix_s);
+              if ($truthy(digits['$end_with?']("_".$freeze()))) {
+                self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
+              } else if ((($truthy(digits['$empty?']()) && ($eqeq(self.num_base, 8))) && ($truthy(self['$version?'](18))))) {
+                digits = "0".$freeze()
+              } else if ($truthy(digits['$empty?']())) {
+                self.$diagnostic("error", "empty_numeric")
+              } else if (($eqeq(self.num_base, 8) && ($truthy((invalid_idx = digits.$index(/[89]/)))))) {
+                
+                invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
+                self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));
+              };
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
+              } else {
+                self.num_xfrm.$call(digits.$to_i(self.num_base))
               };
-              return self.$emit("tINTEGER", chars);}, $$36.$$s = self, $$36.$$arity = 1, $$36));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            digits = self.$tok(self.num_digits_s, self.num_suffix_s);
-            if ($truthy(digits['$end_with?']("_".$freeze()))) {
-              self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
-            } else if ($truthy((function() {if ($truthy(($ret_or_514 = (function() {if ($truthy(($ret_or_515 = digits['$empty?']()))) {
-              return self.num_base['$=='](8)
-            } else {
-              return $ret_or_515
-            }; return nil; })()))) {
-              return self['$version?'](18)
-            } else {
-              return $ret_or_514
-            }; return nil; })())) {
-              digits = "0".$freeze()
-            } else if ($truthy(digits['$empty?']())) {
-              self.$diagnostic("error", "empty_numeric")
-            } else if ($truthy((function() {if ($truthy(($ret_or_516 = self.num_base['$=='](8)))) {
-              
-              return (invalid_idx = digits.$index(/[89]/));
-            } else {
-              return $ret_or_516
-            }; return nil; })())) {
               
-              invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
-              self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));};
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(481, $ret_or_1)) {
               
-              self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits.$to_i(self.num_base))
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((481)['$===']($case)) {
-            
-            self.num_base = 10;
-            self.num_digits_s = self.ts;;
-            
-            self.num_suffix_s = p;;
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$37 = function(chars){var self = $$37.$$s == null ? this : $$37.$$s;
+              
+              self.num_base = 10;
+              self.num_digits_s = self.ts;;
+              
+              self.num_suffix_s = p;;
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$27(chars){var self = $$27.$$s == null ? this : $$27.$$s;
 
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tINTEGER", chars);}, {$$arity: 1, $$s: self});;
               
+              self.te = p;
+              p = $rb_minus(p, 1);
               
-              if (chars == null) {
-                chars = nil;
+              digits = self.$tok(self.num_digits_s, self.num_suffix_s);
+              if ($truthy(digits['$end_with?']("_".$freeze()))) {
+                self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
+              } else if ((($truthy(digits['$empty?']()) && ($eqeq(self.num_base, 8))) && ($truthy(self['$version?'](18))))) {
+                digits = "0".$freeze()
+              } else if ($truthy(digits['$empty?']())) {
+                self.$diagnostic("error", "empty_numeric")
+              } else if (($eqeq(self.num_base, 8) && ($truthy((invalid_idx = digits.$index(/[89]/)))))) {
+                
+                invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
+                self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));
+              };
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
+              } else {
+                self.num_xfrm.$call(digits.$to_i(self.num_base))
               };
-              return self.$emit("tINTEGER", chars);}, $$37.$$s = self, $$37.$$arity = 1, $$37));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            digits = self.$tok(self.num_digits_s, self.num_suffix_s);
-            if ($truthy(digits['$end_with?']("_".$freeze()))) {
-              self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
-            } else if ($truthy((function() {if ($truthy(($ret_or_517 = (function() {if ($truthy(($ret_or_518 = digits['$empty?']()))) {
-              return self.num_base['$=='](8)
-            } else {
-              return $ret_or_518
-            }; return nil; })()))) {
-              return self['$version?'](18)
-            } else {
-              return $ret_or_517
-            }; return nil; })())) {
-              digits = "0".$freeze()
-            } else if ($truthy(digits['$empty?']())) {
-              self.$diagnostic("error", "empty_numeric")
-            } else if ($truthy((function() {if ($truthy(($ret_or_519 = self.num_base['$=='](8)))) {
-              
-              return (invalid_idx = digits.$index(/[89]/));
-            } else {
-              return $ret_or_519
-            }; return nil; })())) {
               
-              invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
-              self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));};
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(445, $ret_or_1)) {
               
-              self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits.$to_i(self.num_base))
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((445)['$===']($case)) {
-            
-            self.num_base = 8;
-            self.num_digits_s = self.ts;;
-            
-            self.num_suffix_s = p;;
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$38 = function(chars){var self = $$38.$$s == null ? this : $$38.$$s;
+              
+              self.num_base = 8;
+              self.num_digits_s = self.ts;;
+              
+              self.num_suffix_s = p;;
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$28(chars){var self = $$28.$$s == null ? this : $$28.$$s;
+
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tINTEGER", chars);}, {$$arity: 1, $$s: self});;
+              
+              self.te = p;
+              p = $rb_minus(p, 1);
+              
+              digits = self.$tok(self.num_digits_s, self.num_suffix_s);
+              if ($truthy(digits['$end_with?']("_".$freeze()))) {
+                self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
+              } else if ((($truthy(digits['$empty?']()) && ($eqeq(self.num_base, 8))) && ($truthy(self['$version?'](18))))) {
+                digits = "0".$freeze()
+              } else if ($truthy(digits['$empty?']())) {
+                self.$diagnostic("error", "empty_numeric")
+              } else if (($eqeq(self.num_base, 8) && ($truthy((invalid_idx = digits.$index(/[89]/)))))) {
+                
+                invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
+                self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));
+              };
+              if ($truthy(self['$version?'](18, 19, 20))) {
+                
+                self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
+                p = $rb_minus(self.num_suffix_s, 1);
+              } else {
+                self.num_xfrm.$call(digits.$to_i(self.num_base))
+              };
+              
+              p = $rb_plus(p, 1);
+              _goto_level = _out;
+              continue;;;;;
+            } else if ($eqeqeq(32, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              if ($truthy(self.herebody_s)) {
+                
+                p = self.herebody_s;
+                self.herebody_s = nil;
+              };;
+              
+              tm = p;;
+              
+              self.act = 73;;
+            } else if ($eqeqeq(63, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.sharp_s = $rb_minus(p, 1);;
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.act = 99;;
+            } else if ($eqeqeq(92, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.sharp_s = $rb_minus(p, 1);;
+              
+              self.$emit_comment(self.sharp_s, ($eqeq(p, pe) ? ($rb_minus(p, 2)) : (p)));;
+              
+              self.act = 181;;
+            } else if ($eqeqeq(488, $ret_or_1)) {
+              
+              
+              self.te = $rb_plus(p, 1);;
+              
+              self.num_suffix_s = p;;
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$29(chars){var self = $$29.$$s == null ? this : $$29.$$s;
 
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tINTEGER", chars);}, {$$arity: 1, $$s: self});;
               
+              self.act = 156;;
+            } else if ($eqeqeq(484, $ret_or_1)) {
               
-              if (chars == null) {
-                chars = nil;
-              };
-              return self.$emit("tINTEGER", chars);}, $$38.$$s = self, $$38.$$arity = 1, $$38));;
-            
-            self.te = p;
-            p = $rb_minus(p, 1);
-            
-            digits = self.$tok(self.num_digits_s, self.num_suffix_s);
-            if ($truthy(digits['$end_with?']("_".$freeze()))) {
-              self.$diagnostic("error", "trailing_in_number", $hash2(["character"], {"character": "_".$freeze()}), self.$range($rb_minus(self.te, 1), self.te))
-            } else if ($truthy((function() {if ($truthy(($ret_or_520 = (function() {if ($truthy(($ret_or_521 = digits['$empty?']()))) {
-              return self.num_base['$=='](8)
-            } else {
-              return $ret_or_521
-            }; return nil; })()))) {
-              return self['$version?'](18)
-            } else {
-              return $ret_or_520
-            }; return nil; })())) {
-              digits = "0".$freeze()
-            } else if ($truthy(digits['$empty?']())) {
-              self.$diagnostic("error", "empty_numeric")
-            } else if ($truthy((function() {if ($truthy(($ret_or_522 = self.num_base['$=='](8)))) {
-              
-              return (invalid_idx = digits.$index(/[89]/));
-            } else {
-              return $ret_or_522
-            }; return nil; })())) {
               
-              invalid_s = $rb_plus(self.num_digits_s, invalid_idx);
-              self.$diagnostic("error", "invalid_octal", nil, self.$range(invalid_s, $rb_plus(invalid_s, 1)));};
-            if ($truthy(self['$version?'](18, 19, 20))) {
+              self.te = $rb_plus(p, 1);;
               
-              self.$emit("tINTEGER", digits.$to_i(self.num_base), self.ts, self.num_suffix_s);
-              p = $rb_minus(self.num_suffix_s, 1);
-            } else {
-              self.num_xfrm.$call(digits.$to_i(self.num_base))
-            };
-            
-            p = $rb_plus(p, 1);
-            _goto_level = _out;
-            continue;;;;;}
-            else if ((32)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            if ($truthy(self.herebody_s)) {
+              self.num_base = 10;
+              self.num_digits_s = self.ts;;
               
-              p = self.herebody_s;
-              self.herebody_s = nil;};;
-            
-            tm = p;;
-            
-            self.act = 73;;}
-            else if ((63)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.sharp_s = $rb_minus(p, 1);;
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.act = 99;;}
-            else if ((92)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.sharp_s = $rb_minus(p, 1);;
-            
-            self.$emit_comment(self.sharp_s, (function() {if (p['$=='](pe)) {
-              return $rb_minus(p, 2)
-            } else {
-              return p
-            }; return nil; })());;
-            
-            self.act = 181;;}
-            else if ((488)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.num_suffix_s = p;;
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$39 = function(chars){var self = $$39.$$s == null ? this : $$39.$$s;
+              self.num_suffix_s = p;;
+              
+              self.num_xfrm = $send(self, 'lambda', [], function $$30(chars){var self = $$30.$$s == null ? this : $$30.$$s;
 
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tINTEGER", chars);}, {$$arity: 1, $$s: self});;
               
+              self.act = 156;;
+            } else if ($eqeqeq(448, $ret_or_1)) {
               
-              if (chars == null) {
-                chars = nil;
-              };
-              return self.$emit("tINTEGER", chars);}, $$39.$$s = self, $$39.$$arity = 1, $$39));;
-            
-            self.act = 156;;}
-            else if ((484)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.num_base = 10;
-            self.num_digits_s = self.ts;;
-            
-            self.num_suffix_s = p;;
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$40 = function(chars){var self = $$40.$$s == null ? this : $$40.$$s;
-
               
+              self.te = $rb_plus(p, 1);;
               
-              if (chars == null) {
-                chars = nil;
-              };
-              return self.$emit("tINTEGER", chars);}, $$40.$$s = self, $$40.$$arity = 1, $$40));;
-            
-            self.act = 156;;}
-            else if ((448)['$===']($case)) {
-            
-            self.te = $rb_plus(p, 1);;
-            
-            self.num_base = 8;
-            self.num_digits_s = self.ts;;
-            
-            self.num_suffix_s = p;;
-            
-            self.num_xfrm = $send(self, 'lambda', [], ($$41 = function(chars){var self = $$41.$$s == null ? this : $$41.$$s;
-
+              self.num_base = 8;
+              self.num_digits_s = self.ts;;
               
+              self.num_suffix_s = p;;
               
-              if (chars == null) {
-                chars = nil;
-              };
-              return self.$emit("tINTEGER", chars);}, $$41.$$s = self, $$41.$$arity = 1, $$41));;
-            
-            self.act = 156;;}};};
+              self.num_xfrm = $send(self, 'lambda', [], function $$31(chars){var self = $$31.$$s == null ? this : $$31.$$s;
+
+                
+                
+                if (chars == null) chars = nil;;
+                return self.$emit("tINTEGER", chars);}, {$$arity: 1, $$s: self});;
+              
+              self.act = 156;;
+            } else {
+              nil
+            }
+          };
+        };
         if ($truthy($rb_le(_goto_level, _again))) {
           
-          $case = _lex_to_state_actions['$[]'](self.cs);
-          if ((96)['$===']($case)) {
-          self.ts = nil;};
-          if (self.cs['$=='](0)) {
+          if ($eqeqeq(96, ($ret_or_1 = _lex_to_state_actions['$[]'](self.cs)))) {
+            
+            self.ts = nil;
+          } else {
+            nil
+          };
+          if ($eqeq(self.cs, 0)) {
             
             _goto_level = _out;
-            continue;;};
+            continue;;
+          };
           p = $rb_plus(p, 1);
-          if ($truthy(p['$!='](pe))) {
+          if ($neqeq(p, pe)) {
             
             _goto_level = _resume;
-            continue;;};};
+            continue;;
+          };
+        };
         if ($truthy($rb_le(_goto_level, _test_eof))) {
-          if (p['$=='](eof)) {
+          if ($eqeq(p, eof)) {
             if ($truthy($rb_gt(_lex_eof_trans['$[]'](self.cs), 0))) {
               
               _trans = $rb_minus(_lex_eof_trans['$[]'](self.cs), 1);
               _goto_level = _eof_trans;
-              continue;;}}};
+              continue;;
+            }
+          }
+        };
         if ($truthy($rb_le(_goto_level, _out))) {
-          break;};
+          break;
+        };
       };;
       if ($truthy(false)) {
-        testEof};
+        testEof
+      };
       self.p = p;
       if ($truthy(self.token_queue['$any?']())) {
         return self.token_queue.$shift()
-      } else if (self.cs['$=='](klass.$lex_error())) {
+      } else if ($eqeq(self.cs, klass.$lex_error())) {
         return [false, ["$error".$freeze(), self.$range($rb_minus(p, 1), p)]]
       } else {
         
         eof = self.source_pts.$size();
         return [false, ["$eof".$freeze(), self.$range(eof, eof)]];
       };
-    }, $Lexer_advance$12.$$arity = 0);
+    }, 0);
     self.$protected();
     
-    Opal.def(self, '$eof_codepoint?', $Lexer_eof_codepoint$ques$42 = function(point) {
-      var self = this;
-
+    $def(self, '$eof_codepoint?', function $Lexer_eof_codepoint$ques$32(point) {
+      
       return [4, 26, 0]['$include?'](point)
-    }, $Lexer_eof_codepoint$ques$42.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$version?', $Lexer_version$ques$43 = function($a) {
+    $def(self, '$version?', function $Lexer_version$ques$33($a) {
       var $post_args, versions, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       versions = $post_args;;
       return versions['$include?'](self.version);
-    }, $Lexer_version$ques$43.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$stack_pop', $Lexer_stack_pop$44 = function $$stack_pop() {
+    $def(self, '$stack_pop', function $$stack_pop() {
       var self = this;
 
       
       self.top = $rb_minus(self.top, 1);
       return self.stack['$[]'](self.top);
-    }, $Lexer_stack_pop$44.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$encode_escape', $Lexer_encode_escape$45 = function $$encode_escape(ord) {
+    $def(self, '$encode_escape', function $$encode_escape(ord) {
       var self = this;
 
       return ord.$chr().$force_encoding(self.source_buffer.$source().$encoding())
-    }, $Lexer_encode_escape$45.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$tok', $Lexer_tok$46 = function $$tok(s, e) {
+    $def(self, '$tok', function $$tok(s, e) {
       var self = this;
 
       
       
-      if (s == null) {
-        s = self.ts;
-      };
+      if (s == null) s = self.ts;;
       
-      if (e == null) {
-        e = self.te;
-      };
+      if (e == null) e = self.te;;
       return self.source_buffer.$slice(Opal.Range.$new(s,e, true));
-    }, $Lexer_tok$46.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$range', $Lexer_range$47 = function $$range(s, e) {
+    $def(self, '$range', function $$range(s, e) {
       var self = this;
 
       
       
-      if (s == null) {
-        s = self.ts;
-      };
+      if (s == null) s = self.ts;;
       
-      if (e == null) {
-        e = self.te;
-      };
-      return $$$($$$($$($nesting, 'Parser'), 'Source'), 'Range').$new(self.source_buffer, s, e);
-    }, $Lexer_range$47.$$arity = -1);
+      if (e == null) e = self.te;;
+      return $$$($$$($$('Parser'), 'Source'), 'Range').$new(self.source_buffer, s, e);
+    }, -1);
     
-    Opal.def(self, '$emit', $Lexer_emit$48 = function $$emit(type, value, s, e) {
+    $def(self, '$emit', function $$emit(type, value, s, e) {
       var self = this, token = nil;
 
       
       
-      if (value == null) {
-        value = self.$tok();
-      };
+      if (value == null) value = self.$tok();;
       
-      if (s == null) {
-        s = self.ts;
-      };
+      if (s == null) s = self.ts;;
       
-      if (e == null) {
-        e = self.te;
-      };
+      if (e == null) e = self.te;;
       token = [type, [value, self.$range(s, e)]];
       self.token_queue.$push(token);
       if ($truthy(self.tokens)) {
-        self.tokens.$push(token)};
+        self.tokens.$push(token)
+      };
       return token;
-    }, $Lexer_emit$48.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$emit_table', $Lexer_emit_table$49 = function $$emit_table(table, s, e) {
+    $def(self, '$emit_table', function $$emit_table(table, s, e) {
       var self = this, value = nil;
 
       
       
-      if (s == null) {
-        s = self.ts;
-      };
+      if (s == null) s = self.ts;;
       
-      if (e == null) {
-        e = self.te;
-      };
+      if (e == null) e = self.te;;
       value = self.$tok(s, e);
       return self.$emit(table['$[]'](value), value, s, e);
-    }, $Lexer_emit_table$49.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$emit_do', $Lexer_emit_do$50 = function $$emit_do(do_block) {
-      var self = this, $ret_or_523 = nil;
+    $def(self, '$emit_do', function $$emit_do(do_block) {
+      var self = this;
 
       
       
-      if (do_block == null) {
-        do_block = false;
-      };
+      if (do_block == null) do_block = false;;
       if ($truthy(self.cond['$active?']())) {
         return self.$emit("kDO_COND", "do".$freeze())
-      } else if ($truthy((function() {if ($truthy(($ret_or_523 = self.cmdarg['$active?']()))) {
-        return $ret_or_523
-      } else {
-        return do_block
-      }; return nil; })())) {
+      } else if (($truthy(self.cmdarg['$active?']()) || ($truthy(do_block)))) {
         return self.$emit("kDO_BLOCK", "do".$freeze())
       } else {
         return self.$emit("kDO", "do".$freeze())
       };
-    }, $Lexer_emit_do$50.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$arg_or_cmdarg', $Lexer_arg_or_cmdarg$51 = function $$arg_or_cmdarg(cmd_state) {
+    $def(self, '$arg_or_cmdarg', function $$arg_or_cmdarg(cmd_state) {
       var self = this;
 
       if ($truthy(cmd_state)) {
@@ -19008,87 +16518,67 @@ Opal.modules["parser/lexer"] = function(Opal) {
       } else {
         return self.$class().$lex_en_expr_arg()
       }
-    }, $Lexer_arg_or_cmdarg$51.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$emit_comment', $Lexer_emit_comment$52 = function $$emit_comment(s, e) {
+    $def(self, '$emit_comment', function $$emit_comment(s, e) {
       var self = this;
 
       
       
-      if (s == null) {
-        s = self.ts;
-      };
+      if (s == null) s = self.ts;;
       
-      if (e == null) {
-        e = self.te;
-      };
+      if (e == null) e = self.te;;
       if ($truthy(self.comments)) {
-        self.comments.$push($$$($$$($$($nesting, 'Parser'), 'Source'), 'Comment').$new(self.$range(s, e)))};
+        self.comments.$push($$$($$$($$('Parser'), 'Source'), 'Comment').$new(self.$range(s, e)))
+      };
       if ($truthy(self.tokens)) {
-        self.tokens.$push(["tCOMMENT", [self.$tok(s, e), self.$range(s, e)]])};
+        self.tokens.$push(["tCOMMENT", [self.$tok(s, e), self.$range(s, e)]])
+      };
       return nil;
-    }, $Lexer_emit_comment$52.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$diagnostic', $Lexer_diagnostic$53 = function $$diagnostic(type, reason, arguments$, location, highlights) {
+    $def(self, '$diagnostic', function $$diagnostic(type, reason, arguments$, location, highlights) {
       var self = this;
 
       
       
-      if (arguments$ == null) {
-        arguments$ = nil;
-      };
+      if (arguments$ == null) arguments$ = nil;;
       
-      if (location == null) {
-        location = self.$range();
-      };
+      if (location == null) location = self.$range();;
       
-      if (highlights == null) {
-        highlights = [];
-      };
-      return self.diagnostics.$process($$$($$($nesting, 'Parser'), 'Diagnostic').$new(type, reason, arguments$, location, highlights));
-    }, $Lexer_diagnostic$53.$$arity = -3);
+      if (highlights == null) highlights = [];;
+      return self.diagnostics.$process($$$($$('Parser'), 'Diagnostic').$new(type, reason, arguments$, location, highlights));
+    }, -3);
     
-    Opal.def(self, '$push_literal', $Lexer_push_literal$54 = function $$push_literal($a) {
+    $def(self, '$push_literal', function $$push_literal($a) {
       var $post_args, args, self = this, new_literal = nil;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
-      new_literal = $send($$($nesting, 'Literal'), 'new', [self].concat(Opal.to_a(args)));
+      new_literal = $send($$('Literal'), 'new', [self].concat($to_a(args)));
       self.literal_stack.$push(new_literal);
       return self.$next_state_for_literal(new_literal);
-    }, $Lexer_push_literal$54.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$next_state_for_literal', $Lexer_next_state_for_literal$55 = function $$next_state_for_literal(literal) {
-      var self = this, $ret_or_524 = nil, $ret_or_525 = nil, $ret_or_526 = nil;
+    $def(self, '$next_state_for_literal', function $$next_state_for_literal(literal) {
+      var self = this;
 
-      if ($truthy((function() {if ($truthy(($ret_or_524 = literal['$words?']()))) {
-        return literal['$backslash_delimited?']()
-      } else {
-        return $ret_or_524
-      }; return nil; })())) {
+      if (($truthy(literal['$words?']()) && ($truthy(literal['$backslash_delimited?']())))) {
         if ($truthy(literal['$interpolate?']())) {
           return self.$class().$lex_en_interp_backslash_delimited_words()
         } else {
           return self.$class().$lex_en_plain_backslash_delimited_words()
         }
-      } else if ($truthy((function() {if ($truthy(($ret_or_525 = literal['$words?']()))) {
-        return literal['$backslash_delimited?']()['$!']()
-      } else {
-        return $ret_or_525
-      }; return nil; })())) {
+      } else if (($truthy(literal['$words?']()) && ($not(literal['$backslash_delimited?']())))) {
         if ($truthy(literal['$interpolate?']())) {
           return self.$class().$lex_en_interp_words()
         } else {
           return self.$class().$lex_en_plain_words()
         }
-      } else if ($truthy((function() {if ($truthy(($ret_or_526 = literal['$words?']()['$!']()))) {
-        return literal['$backslash_delimited?']()
-      } else {
-        return $ret_or_526
-      }; return nil; })())) {
+      } else if (($not(literal['$words?']()) && ($truthy(literal['$backslash_delimited?']())))) {
         if ($truthy(literal['$interpolate?']())) {
           return self.$class().$lex_en_interp_backslash_delimited()
         } else {
@@ -19099,111 +16589,85 @@ Opal.modules["parser/lexer"] = function(Opal) {
       } else {
         return self.$class().$lex_en_plain_string()
       }
-    }, $Lexer_next_state_for_literal$55.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$literal', $Lexer_literal$56 = function $$literal() {
+    $def(self, '$literal', function $$literal() {
       var self = this;
 
       return self.literal_stack.$last()
-    }, $Lexer_literal$56.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$pop_literal', $Lexer_pop_literal$57 = function $$pop_literal() {
+    $def(self, '$pop_literal', function $$pop_literal() {
       var self = this, old_literal = nil;
 
       
       old_literal = self.literal_stack.$pop();
       self.dedent_level = old_literal.$dedent_level();
-      if (old_literal.$type()['$==']("tREGEXP_BEG")) {
+      if ($eqeq(old_literal.$type(), "tREGEXP_BEG")) {
         return self.$class().$lex_en_regexp_modifiers()
       } else {
         return self.$class().$lex_en_expr_end()
       };
-    }, $Lexer_pop_literal$57.$$arity = 0);
-    Opal.const_set($nesting[0], 'PUNCTUATION', $hash2(["=", "&", "|", "!", "^", "+", "-", "*", "/", "%", "~", ",", ";", ".", "..", "...", "[", "]", "(", ")", "?", ":", "&&", "||", "-@", "+@", "~@", "**", "->", "=~", "!~", "==", "!=", ">", ">>", ">=", "<", "<<", "<=", "=>", "::", "===", "<=>", "[]", "[]=", "{", "}", "`", "!@", "&."], {"=": "tEQL", "&": "tAMPER2", "|": "tPIPE", "!": "tBANG", "^": "tCARET", "+": "tPLUS", "-": "tMINUS", "*": "tSTAR2", "/": "tDIVIDE", "%": "tPERCENT", "~": "tTILDE", ",": "tCOMMA", ";": "tSEMI", ".": "tDOT", "..": "tDOT2", "...": "tDOT3", "[": "tLBRACK2", "]": "tRBRACK", "(": "tLPAREN2", ")": "tRPAREN", "?": "tEH", ":": "tCOLON", "&&": "tANDOP", "||": "tOROP", "-@": "tUMINUS", "+@": "tUPLUS", "~@": "tTILDE", "**": "tPOW", "->": "tLAMBDA", "=~": "tMATCH", "!~": "tNMATCH", "==": "tEQ", "!=": "tNEQ", ">": "tGT", ">>": "tRSHFT", ">=": "tGEQ", "<": "tLT", "<<": "tLSHFT", "<=": "tLEQ", "=>": "tASSOC", "::": "tCOLON2", "===": "tEQQ", "<=>": "tCMP", "[]": "tAREF", "[]=": "tASET", "{": "tLCURLY", "}": "tRCURLY", "`": "tBACK_REF2", "!@": "tBANG", "&.": "tANDDOT"}));
-    Opal.const_set($nesting[0], 'PUNCTUATION_BEGIN', $hash2(["&", "*", "**", "+", "-", "::", "(", "{", "["], {"&": "tAMPER", "*": "tSTAR", "**": "tDSTAR", "+": "tUPLUS", "-": "tUMINUS", "::": "tCOLON3", "(": "tLPAREN", "{": "tLBRACE", "[": "tLBRACK"}));
-    Opal.const_set($nesting[0], 'KEYWORDS', $hash2(["if", "unless", "while", "until", "rescue", "defined?", "BEGIN", "END"], {"if": "kIF_MOD", "unless": "kUNLESS_MOD", "while": "kWHILE_MOD", "until": "kUNTIL_MOD", "rescue": "kRESCUE_MOD", "defined?": "kDEFINED", "BEGIN": "klBEGIN", "END": "klEND"}));
-    Opal.const_set($nesting[0], 'KEYWORDS_BEGIN', $hash2(["if", "unless", "while", "until", "rescue", "defined?", "BEGIN", "END"], {"if": "kIF", "unless": "kUNLESS", "while": "kWHILE", "until": "kUNTIL", "rescue": "kRESCUE", "defined?": "kDEFINED", "BEGIN": "klBEGIN", "END": "klEND"}));
-    return $send(["class", "module", "def", "undef", "begin", "end", "then", "elsif", "else", "ensure", "case", "when", "for", "break", "next", "redo", "retry", "in", "do", "return", "yield", "super", "self", "nil", "true", "false", "and", "or", "not", "alias", "__FILE__", "__LINE__", "__ENCODING__"], 'each', [], ($Lexer$58 = function(keyword){var self = $Lexer$58.$$s == null ? this : $Lexer$58.$$s;
-
-      
-      
-      if (keyword == null) {
-        keyword = nil;
-      };
-      $writer = [keyword, (($writer = [keyword, "" + "k" + (keyword.$upcase())]), $send($$($nesting, 'KEYWORDS'), '[]=', Opal.to_a($writer)), $writer[$rb_minus($writer["length"], 1)])];
-      $send($$($nesting, 'KEYWORDS_BEGIN'), '[]=', Opal.to_a($writer));
-      return $writer[$rb_minus($writer["length"], 1)];}, $Lexer$58.$$s = self, $Lexer$58.$$arity = 1, $Lexer$58));
-  })($$($nesting, 'Parser'), null, $nesting)
+    }, 0);
+    $const_set($nesting[0], 'PUNCTUATION', $hash2(["=", "&", "|", "!", "^", "+", "-", "*", "/", "%", "~", ",", ";", ".", "..", "...", "[", "]", "(", ")", "?", ":", "&&", "||", "-@", "+@", "~@", "**", "->", "=~", "!~", "==", "!=", ">", ">>", ">=", "<", "<<", "<=", "=>", "::", "===", "<=>", "[]", "[]=", "{", "}", "`", "!@", "&."], {"=": "tEQL", "&": "tAMPER2", "|": "tPIPE", "!": "tBANG", "^": "tCARET", "+": "tPLUS", "-": "tMINUS", "*": "tSTAR2", "/": "tDIVIDE", "%": "tPERCENT", "~": "tTILDE", ",": "tCOMMA", ";": "tSEMI", ".": "tDOT", "..": "tDOT2", "...": "tDOT3", "[": "tLBRACK2", "]": "tRBRACK", "(": "tLPAREN2", ")": "tRPAREN", "?": "tEH", ":": "tCOLON", "&&": "tANDOP", "||": "tOROP", "-@": "tUMINUS", "+@": "tUPLUS", "~@": "tTILDE", "**": "tPOW", "->": "tLAMBDA", "=~": "tMATCH", "!~": "tNMATCH", "==": "tEQ", "!=": "tNEQ", ">": "tGT", ">>": "tRSHFT", ">=": "tGEQ", "<": "tLT", "<<": "tLSHFT", "<=": "tLEQ", "=>": "tASSOC", "::": "tCOLON2", "===": "tEQQ", "<=>": "tCMP", "[]": "tAREF", "[]=": "tASET", "{": "tLCURLY", "}": "tRCURLY", "`": "tBACK_REF2", "!@": "tBANG", "&.": "tANDDOT"}));
+    $const_set($nesting[0], 'PUNCTUATION_BEGIN', $hash2(["&", "*", "**", "+", "-", "::", "(", "{", "["], {"&": "tAMPER", "*": "tSTAR", "**": "tDSTAR", "+": "tUPLUS", "-": "tUMINUS", "::": "tCOLON3", "(": "tLPAREN", "{": "tLBRACE", "[": "tLBRACK"}));
+    $const_set($nesting[0], 'KEYWORDS', $hash2(["if", "unless", "while", "until", "rescue", "defined?", "BEGIN", "END"], {"if": "kIF_MOD", "unless": "kUNLESS_MOD", "while": "kWHILE_MOD", "until": "kUNTIL_MOD", "rescue": "kRESCUE_MOD", "defined?": "kDEFINED", "BEGIN": "klBEGIN", "END": "klEND"}));
+    $const_set($nesting[0], 'KEYWORDS_BEGIN', $hash2(["if", "unless", "while", "until", "rescue", "defined?", "BEGIN", "END"], {"if": "kIF", "unless": "kUNLESS", "while": "kWHILE", "until": "kUNTIL", "rescue": "kRESCUE", "defined?": "kDEFINED", "BEGIN": "klBEGIN", "END": "klEND"}));
+    return $send(["class", "module", "def", "undef", "begin", "end", "then", "elsif", "else", "ensure", "case", "when", "for", "break", "next", "redo", "retry", "in", "do", "return", "yield", "super", "self", "nil", "true", "false", "and", "or", "not", "alias", "__FILE__", "__LINE__", "__ENCODING__"], 'each', [], function $Lexer$34(keyword){
+      
+      
+      if (keyword == null) keyword = nil;;
+      $writer = [keyword, (($writer = [keyword, "k" + (keyword.$upcase())]), $send($$('KEYWORDS'), '[]=', $to_a($writer)), $writer[$rb_minus($writer["length"], 1)])];
+      $send($$('KEYWORDS_BEGIN'), '[]=', $to_a($writer));
+      return $writer[$rb_minus($writer["length"], 1)];}, 1);
+  })($$('Parser'), null, $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/lexer/literal"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $hash2 = Opal.hash2, $enc = Opal.enc, $truthy = Opal.truthy, $send = Opal.send;
+Opal.modules["parser/lexer/literal"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $const_set = Opal.const_set, $hash2 = Opal.hash2, $enc = Opal.enc, $truthy = Opal.truthy, $rb_plus = Opal.rb_plus, $to_ary = Opal.to_ary, $def = Opal.def, $eqeq = Opal.eqeq, $rb_minus = Opal.rb_minus, $neqeq = Opal.neqeq, $not = Opal.not, $send = Opal.send, $eqeqeq = Opal.eqeqeq, $rb_gt = Opal.rb_gt;
 
-  Opal.add_stubs(['$attr_reader', '$attr_accessor', '$coerce_encoding', '$include?', '$send', '$+', '$[]', '$fetch', '$==', '$!', '$heredoc?', '$start_with?', '$freeze', '$clear_buffer', '$emit_start_tok', '$type', '$words?', '$=~', '$delimiter?', '$-', '$extend_space', '$!=', '$flush_string', '$emit', '$each_char', '$===', '$%', '$nil?', '$>', '$<<', '$empty?', '$extend_content', '$protected', '$lstrip', '$b', '$dup', '$force_encoding', '$encoding', '$source', '$source_buffer', '$length']);
+  Opal.add_stubs('attr_reader,attr_accessor,coerce_encoding,include?,send,+,[],fetch,==,!,heredoc?,start_with?,freeze,clear_buffer,emit_start_tok,type,=~,words?,delimiter?,-,extend_space,!=,flush_string,emit,each_char,===,%,>,nil?,<<,empty?,extend_content,protected,lstrip,b,dup,force_encoding,encoding,source,source_buffer,length');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
-    var $nesting = [self].concat($parent_nesting);
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Literal');
 
-      var $nesting = [self].concat($parent_nesting), $Literal_initialize$1, $Literal_interpolate$ques$2, $Literal_words$ques$3, $Literal_regexp$ques$4, $Literal_heredoc$ques$5, $Literal_plain_heredoc$ques$6, $Literal_squiggly_heredoc$ques$7, $Literal_backslash_delimited$ques$8, $Literal_type$9, $Literal_munge_escape$ques$10, $Literal_nest_and_try_closing$11, $Literal_infer_indent_level$12, $Literal_start_interp_brace$14, $Literal_end_interp_brace_and_try_closing$15, $Literal_extend_string$16, $Literal_flush_string$17, $Literal_extend_content$18, $Literal_extend_space$19, $Literal_supports_line_continuation_via_slash$ques$20, $Literal_delimiter$ques$21, $Literal_coerce_encoding$22, $Literal_clear_buffer$23, $Literal_emit_start_tok$24, $Literal_emit$25;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.lexer = self.$$prototype.start_tok = self.$$prototype.str_type = self.$$prototype.monolithic = self.$$prototype.interpolate = self.$$prototype.heredoc_e = self.$$prototype.dedent_body = self.$$prototype.end_delim = self.$$prototype.start_delim = self.$$prototype.nesting = self.$$prototype.label_allowed = self.$$prototype.buffer = self.$$prototype.str_s = self.$$prototype.interp_braces = self.$$prototype.buffer_s = self.$$prototype.buffer_e = self.$$prototype.space_emitted = self.$$prototype.indent = nil;
+      $proto.lexer = $proto.start_tok = $proto.str_type = $proto.monolithic = $proto.interpolate = $proto.heredoc_e = $proto.dedent_body = $proto.end_delim = $proto.start_delim = $proto.nesting = $proto.label_allowed = $proto.buffer = $proto.str_s = $proto.interp_braces = $proto.buffer_s = $proto.buffer_e = $proto.space_emitted = $proto.indent = nil;
       
-      Opal.const_set($nesting[0], 'DELIMITERS', $hash2(["(", "[", "{", "<"], {"(": $enc(")", "ASCII-8BIT"), "[": $enc("]", "ASCII-8BIT"), "{": $enc("}", "ASCII-8BIT"), "<": $enc(">", "ASCII-8BIT")}));
-      Opal.const_set($nesting[0], 'TYPES', $hash2(["'", "<<'", "%q", "\"", "<<\"", "%", "%Q", "%w", "%W", "%i", "%I", ":'", "%s", ":\"", "/", "%r", "%x", "`", "<<`"], {"'": ["tSTRING_BEG", false], "<<'": ["tSTRING_BEG", false], "%q": ["tSTRING_BEG", false], "\"": ["tSTRING_BEG", true], "<<\"": ["tSTRING_BEG", true], "%": ["tSTRING_BEG", true], "%Q": ["tSTRING_BEG", true], "%w": ["tQWORDS_BEG", false], "%W": ["tWORDS_BEG", true], "%i": ["tQSYMBOLS_BEG", false], "%I": ["tSYMBOLS_BEG", true], ":'": ["tSYMBEG", false], "%s": ["tSYMBEG", false], ":\"": ["tSYMBEG", true], "/": ["tREGEXP_BEG", true], "%r": ["tREGEXP_BEG", true], "%x": ["tXSTRING_BEG", true], "`": ["tXSTRING_BEG", true], "<<`": ["tXSTRING_BEG", true]}));
+      $const_set($nesting[0], 'DELIMITERS', $hash2(["(", "[", "{", "<"], {"(": $enc(")", "ASCII-8BIT"), "[": $enc("]", "ASCII-8BIT"), "{": $enc("}", "ASCII-8BIT"), "<": $enc(">", "ASCII-8BIT")}));
+      $const_set($nesting[0], 'TYPES', $hash2(["'", "<<'", "%q", "\"", "<<\"", "%", "%Q", "%w", "%W", "%i", "%I", ":'", "%s", ":\"", "/", "%r", "%x", "`", "<<`"], {"'": ["tSTRING_BEG", false], "<<'": ["tSTRING_BEG", false], "%q": ["tSTRING_BEG", false], "\"": ["tSTRING_BEG", true], "<<\"": ["tSTRING_BEG", true], "%": ["tSTRING_BEG", true], "%Q": ["tSTRING_BEG", true], "%w": ["tQWORDS_BEG", false], "%W": ["tWORDS_BEG", true], "%i": ["tQSYMBOLS_BEG", false], "%I": ["tSYMBOLS_BEG", true], ":'": ["tSYMBEG", false], "%s": ["tSYMBEG", false], ":\"": ["tSYMBEG", true], "/": ["tREGEXP_BEG", true], "%r": ["tREGEXP_BEG", true], "%x": ["tXSTRING_BEG", true], "`": ["tXSTRING_BEG", true], "<<`": ["tXSTRING_BEG", true]}));
       self.$attr_reader("heredoc_e", "str_s", "dedent_level");
       self.$attr_accessor("saved_herebody_s");
       
-      Opal.def(self, '$initialize', $Literal_initialize$1 = function $$initialize(lexer, str_type, delimiter, str_s, heredoc_e, indent, dedent_body, label_allowed) {
+      $def(self, '$initialize', function $$initialize(lexer, str_type, delimiter, str_s, heredoc_e, indent, dedent_body, label_allowed) {
         var $a, $b, self = this, $ret_or_1 = nil, $ret_or_2 = nil;
 
         
         
-        if (heredoc_e == null) {
-          heredoc_e = nil;
-        };
+        if (heredoc_e == null) heredoc_e = nil;;
         
-        if (indent == null) {
-          indent = false;
-        };
+        if (indent == null) indent = false;;
         
-        if (dedent_body == null) {
-          dedent_body = false;
-        };
+        if (dedent_body == null) dedent_body = false;;
         
-        if (label_allowed == null) {
-          label_allowed = false;
-        };
+        if (label_allowed == null) label_allowed = false;;
         self.lexer = lexer;
         self.nesting = 1;
         str_type = self.$coerce_encoding(str_type);
         delimiter = self.$coerce_encoding(delimiter);
-        if ($truthy($$($nesting, 'TYPES')['$include?'](str_type))) {
-        } else {
+        if (!$truthy($$('TYPES')['$include?'](str_type))) {
           lexer.$send("diagnostic", "error", "unexpected_percent_str", $hash2(["type"], {"type": str_type}), self.lexer.$send("range", str_s, $rb_plus(str_s, 2)))
         };
         self.str_type = str_type;
         self.str_s = str_s;
-        $b = $$($nesting, 'TYPES')['$[]'](str_type), $a = Opal.to_ary($b), (self.start_tok = ($a[0] == null ? nil : $a[0])), (self.interpolate = ($a[1] == null ? nil : $a[1])), $b;
-        self.start_delim = (function() {if ($truthy($$($nesting, 'DELIMITERS')['$include?'](delimiter))) {
-          return delimiter
-        } else {
-          return nil
-        }; return nil; })();
-        self.end_delim = $$($nesting, 'DELIMITERS').$fetch(delimiter, delimiter);
+        $b = $$('TYPES')['$[]'](str_type), $a = $to_ary($b), (self.start_tok = ($a[0] == null ? nil : $a[0])), (self.interpolate = ($a[1] == null ? nil : $a[1])), $b;
+        self.start_delim = ($truthy($$('DELIMITERS')['$include?'](delimiter)) ? (delimiter) : (nil));
+        self.end_delim = $$('DELIMITERS').$fetch(delimiter, delimiter);
         self.heredoc_e = heredoc_e;
         self.indent = indent;
         self.label_allowed = label_allowed;
@@ -19211,147 +16675,108 @@ Opal.modules["parser/lexer/literal"] = function(Opal) {
         self.dedent_level = nil;
         self.interp_braces = 0;
         self.space_emitted = true;
-        self.monolithic = (function() {if ($truthy(($ret_or_1 = (function() {if ($truthy(($ret_or_2 = self.start_tok['$==']("tSTRING_BEG")))) {
-          return [$enc("'", "ASCII-8BIT"), $enc("\"", "ASCII-8BIT")]['$include?'](str_type)
-        } else {
-          return $ret_or_2
-        }; return nil; })()))) {
-          return self['$heredoc?']()['$!']()
-        } else {
-          return $ret_or_1
-        }; return nil; })();
+        self.monolithic = ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = self.start_tok['$==']("tSTRING_BEG"))) ? ([$enc("'", "ASCII-8BIT"), $enc("\"", "ASCII-8BIT")]['$include?'](str_type)) : ($ret_or_2)))) ? (self['$heredoc?']()['$!']()) : ($ret_or_1));
         if ($truthy(self.str_type['$start_with?']($enc("%", "ASCII-8BIT").$freeze()))) {
-          self.str_type = $rb_plus(self.str_type, delimiter)};
+          self.str_type = $rb_plus(self.str_type, delimiter)
+        };
         self.$clear_buffer();
         if ($truthy(self.monolithic)) {
           return nil
         } else {
           return self.$emit_start_tok()
         };
-      }, $Literal_initialize$1.$$arity = -5);
+      }, -5);
       
-      Opal.def(self, '$interpolate?', $Literal_interpolate$ques$2 = function() {
+      $def(self, '$interpolate?', function $Literal_interpolate$ques$1() {
         var self = this;
 
         return self.interpolate
-      }, $Literal_interpolate$ques$2.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$words?', $Literal_words$ques$3 = function() {
-        var self = this, $ret_or_3 = nil, $ret_or_4 = nil, $ret_or_5 = nil;
+      $def(self, '$words?', function $Literal_words$ques$2() {
+        var self = this, $ret_or_1 = nil, $ret_or_2 = nil, $ret_or_3 = nil;
 
-        if ($truthy(($ret_or_3 = (function() {if ($truthy(($ret_or_4 = (function() {if ($truthy(($ret_or_5 = self.$type()['$==']("tWORDS_BEG")))) {
-          return $ret_or_5
-        } else {
-          return self.$type()['$==']("tQWORDS_BEG")
-        }; return nil; })()))) {
-          return $ret_or_4
-        } else {
-          return self.$type()['$==']("tSYMBOLS_BEG")
-        }; return nil; })()))) {
-          return $ret_or_3
+        if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = ($truthy(($ret_or_3 = self.$type()['$==']("tWORDS_BEG"))) ? ($ret_or_3) : (self.$type()['$==']("tQWORDS_BEG"))))) ? ($ret_or_2) : (self.$type()['$==']("tSYMBOLS_BEG")))))) {
+          return $ret_or_1
         } else {
           return self.$type()['$==']("tQSYMBOLS_BEG")
         }
-      }, $Literal_words$ques$3.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$regexp?', $Literal_regexp$ques$4 = function() {
+      $def(self, '$regexp?', function $Literal_regexp$ques$3() {
         var self = this;
 
         return self.$type()['$==']("tREGEXP_BEG")
-      }, $Literal_regexp$ques$4.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$heredoc?', $Literal_heredoc$ques$5 = function() {
+      $def(self, '$heredoc?', function $Literal_heredoc$ques$4() {
         var self = this;
 
         return self.heredoc_e['$!']()['$!']()
-      }, $Literal_heredoc$ques$5.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$plain_heredoc?', $Literal_plain_heredoc$ques$6 = function() {
-        var self = this, $ret_or_6 = nil;
+      $def(self, '$plain_heredoc?', function $Literal_plain_heredoc$ques$5() {
+        var self = this, $ret_or_1 = nil;
 
-        if ($truthy(($ret_or_6 = self['$heredoc?']()))) {
+        if ($truthy(($ret_or_1 = self['$heredoc?']()))) {
           return self.dedent_body['$!']()
         } else {
-          return $ret_or_6
+          return $ret_or_1
         }
-      }, $Literal_plain_heredoc$ques$6.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$squiggly_heredoc?', $Literal_squiggly_heredoc$ques$7 = function() {
-        var self = this, $ret_or_7 = nil;
+      $def(self, '$squiggly_heredoc?', function $Literal_squiggly_heredoc$ques$6() {
+        var self = this, $ret_or_1 = nil;
 
-        if ($truthy(($ret_or_7 = self['$heredoc?']()))) {
+        if ($truthy(($ret_or_1 = self['$heredoc?']()))) {
           return self.dedent_body
         } else {
-          return $ret_or_7
+          return $ret_or_1
         }
-      }, $Literal_squiggly_heredoc$ques$7.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$backslash_delimited?', $Literal_backslash_delimited$ques$8 = function() {
+      $def(self, '$backslash_delimited?', function $Literal_backslash_delimited$ques$7() {
         var self = this;
 
         return self.end_delim['$==']($enc("\\", "ASCII-8BIT").$freeze())
-      }, $Literal_backslash_delimited$ques$8.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$type', $Literal_type$9 = function $$type() {
+      $def(self, '$type', function $$type() {
         var self = this;
 
         return self.start_tok
-      }, $Literal_type$9.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$munge_escape?', $Literal_munge_escape$ques$10 = function(character) {
-        var self = this, $ret_or_8 = nil;
+      $def(self, '$munge_escape?', function $Literal_munge_escape$ques$8(character) {
+        var self = this;
 
         
         character = self.$coerce_encoding(character);
-        if ($truthy((function() {if ($truthy(($ret_or_8 = self['$words?']()))) {
-          return character['$=~'](/[ \t\v\r\f\n]/)
-        } else {
-          return $ret_or_8
-        }; return nil; })())) {
+        if (($truthy(self['$words?']()) && ($truthy(character['$=~'](/[ \t\v\r\f\n]/))))) {
           return true
         } else {
           return [$enc("\\", "ASCII-8BIT").$freeze(), self.start_delim, self.end_delim]['$include?'](character)
         };
-      }, $Literal_munge_escape$ques$10.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$nest_and_try_closing', $Literal_nest_and_try_closing$11 = function $$nest_and_try_closing(delimiter, ts, te, lookahead) {
-        var self = this, $ret_or_9 = nil, $ret_or_10 = nil, $ret_or_11 = nil, $ret_or_12 = nil, $ret_or_13 = nil;
+      $def(self, '$nest_and_try_closing', function $$nest_and_try_closing(delimiter, ts, te, lookahead) {
+        var self = this;
 
         
         
-        if (lookahead == null) {
-          lookahead = nil;
-        };
+        if (lookahead == null) lookahead = nil;;
         delimiter = self.$coerce_encoding(delimiter);
-        if ($truthy((function() {if ($truthy(($ret_or_9 = self.start_delim))) {
-          return self.start_delim['$=='](delimiter)
-        } else {
-          return $ret_or_9
-        }; return nil; })())) {
+        if (($truthy(self.start_delim) && ($eqeq(self.start_delim, delimiter)))) {
           self.nesting = $rb_plus(self.nesting, 1)
         } else if ($truthy(self['$delimiter?'](delimiter))) {
-          self.nesting = $rb_minus(self.nesting, 1)};
-        if (self.nesting['$=='](0)) {
+          self.nesting = $rb_minus(self.nesting, 1)
+        };
+        if ($eqeq(self.nesting, 0)) {
           
           if ($truthy(self['$words?']())) {
-            self.$extend_space(ts, ts)};
-          if ($truthy((function() {if ($truthy(($ret_or_10 = (function() {if ($truthy(($ret_or_11 = (function() {if ($truthy(($ret_or_12 = (function() {if ($truthy(($ret_or_13 = lookahead))) {
-            return self.label_allowed
-          } else {
-            return $ret_or_13
-          }; return nil; })()))) {
-            return lookahead['$[]'](0)['$==']($enc(":", "ASCII-8BIT"))
-          } else {
-            return $ret_or_12
-          }; return nil; })()))) {
-            return lookahead['$[]'](1)['$!=']($enc(":", "ASCII-8BIT"))
-          } else {
-            return $ret_or_11
-          }; return nil; })()))) {
-            return self.start_tok['$==']("tSTRING_BEG")
-          } else {
-            return $ret_or_10
-          }; return nil; })())) {
+            self.$extend_space(ts, ts)
+          };
+          if ((((($truthy(lookahead) && ($truthy(self.label_allowed))) && ($eqeq(lookahead['$[]'](0), $enc(":", "ASCII-8BIT")))) && ($neqeq(lookahead['$[]'](1), $enc(":", "ASCII-8BIT")))) && ($eqeq(self.start_tok, "tSTRING_BEG")))) {
             
             self.$flush_string();
             return self.$emit("tLABEL_END", self.end_delim, ts, $rb_plus(te, 1));
@@ -19359,8 +16784,7 @@ Opal.modules["parser/lexer/literal"] = function(Opal) {
             return self.$emit("tSTRING", self.buffer, self.str_s, te)
           } else {
             
-            if ($truthy(self['$heredoc?']())) {
-            } else {
+            if (!$truthy(self['$heredoc?']())) {
               self.$flush_string()
             };
             return self.$emit("tSTRING_END", self.end_delim, ts, te);
@@ -19368,74 +16792,70 @@ Opal.modules["parser/lexer/literal"] = function(Opal) {
         } else {
           return nil
         };
-      }, $Literal_nest_and_try_closing$11.$$arity = -4);
+      }, -4);
       
-      Opal.def(self, '$infer_indent_level', $Literal_infer_indent_level$12 = function $$infer_indent_level(line) {
-        var $$13, self = this, indent_level = nil;
+      $def(self, '$infer_indent_level', function $$infer_indent_level(line) {
+        var self = this, indent_level = nil;
 
         
-        if ($truthy(self.dedent_body['$!']())) {
-          return nil};
+        if ($not(self.dedent_body)) {
+          return nil
+        };
         indent_level = 0;
-        return (function(){var $brk = Opal.new_brk(); try {return $send(line, 'each_char', [], ($$13 = function(char$){var self = $$13.$$s == null ? this : $$13.$$s, $case = nil, $ret_or_14 = nil;
+        return (function(){var $brk = Opal.new_brk(); try {return $send(line, 'each_char', [], function $$9(char$){var self = $$9.$$s == null ? this : $$9.$$s, $ret_or_1 = nil;
           if (self.dedent_level == null) self.dedent_level = nil;
 
           
           
-          if (char$ == null) {
-            char$ = nil;
-          };
-          return (function() {$case = char$;
-          if (" "['$===']($case)) {return (indent_level = $rb_plus(indent_level, 1))}
-          else if ("\t"['$===']($case)) {return (indent_level = $rb_plus(indent_level, $rb_minus(8, indent_level['$%'](8))))}
-          else {
-          if ($truthy((function() {if ($truthy(($ret_or_14 = self.dedent_level['$nil?']()))) {
-            return $ret_or_14
+          if (char$ == null) char$ = nil;;
+          if ($eqeqeq(" ", ($ret_or_1 = char$))) {
+            return (indent_level = $rb_plus(indent_level, 1))
+          } else if ($eqeqeq("\t", $ret_or_1)) {
+            return (indent_level = $rb_plus(indent_level, $rb_minus(8, indent_level['$%'](8))))
           } else {
-            return $rb_gt(self.dedent_level, indent_level)
-          }; return nil; })())) {
-            self.dedent_level = indent_level};
-          
-          Opal.brk(nil, $brk);}})();}, $$13.$$s = self, $$13.$$brk = $brk, $$13.$$arity = 1, $$13))
+            
+            if (($truthy(self.dedent_level['$nil?']()) || ($truthy($rb_gt(self.dedent_level, indent_level))))) {
+              self.dedent_level = indent_level
+            };
+            
+            Opal.brk(nil, $brk);
+          };}, {$$arity: 1, $$s: self, $$brk: $brk})
         } catch (err) { if (err === $brk) { return err.$v } else { throw err } }})();
-      }, $Literal_infer_indent_level$12.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$start_interp_brace', $Literal_start_interp_brace$14 = function $$start_interp_brace() {
+      $def(self, '$start_interp_brace', function $$start_interp_brace() {
         var self = this;
 
         return (self.interp_braces = $rb_plus(self.interp_braces, 1))
-      }, $Literal_start_interp_brace$14.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$end_interp_brace_and_try_closing', $Literal_end_interp_brace_and_try_closing$15 = function $$end_interp_brace_and_try_closing() {
+      $def(self, '$end_interp_brace_and_try_closing', function $$end_interp_brace_and_try_closing() {
         var self = this;
 
         
         self.interp_braces = $rb_minus(self.interp_braces, 1);
         
         return self.interp_braces['$=='](0);;
-      }, $Literal_end_interp_brace_and_try_closing$15.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$extend_string', $Literal_extend_string$16 = function $$extend_string(string, ts, te) {
-        var self = this, $ret_or_15 = nil;
+      $def(self, '$extend_string', function $$extend_string(string, ts, te) {
+        var self = this, $ret_or_1 = nil;
 
         
-        self.buffer_s = (function() {if ($truthy(($ret_or_15 = self.buffer_s))) {
-          return $ret_or_15
-        } else {
-          return ts
-        }; return nil; })();
+        self.buffer_s = ($truthy(($ret_or_1 = self.buffer_s)) ? ($ret_or_1) : (ts));
         self.buffer_e = te;
         return self.buffer['$<<'](string);
-      }, $Literal_extend_string$16.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$flush_string', $Literal_flush_string$17 = function $$flush_string() {
+      $def(self, '$flush_string', function $$flush_string() {
         var self = this;
 
         
         if ($truthy(self.monolithic)) {
           
           self.$emit_start_tok();
-          self.monolithic = false;};
+          self.monolithic = false;
+        };
         if ($truthy(self.buffer['$empty?']())) {
           return nil
         } else {
@@ -19444,15 +16864,15 @@ Opal.modules["parser/lexer/literal"] = function(Opal) {
           self.$clear_buffer();
           return self.$extend_content();
         };
-      }, $Literal_flush_string$17.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$extend_content', $Literal_extend_content$18 = function $$extend_content() {
+      $def(self, '$extend_content', function $$extend_content() {
         var self = this;
 
         return (self.space_emitted = false)
-      }, $Literal_extend_content$18.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$extend_space', $Literal_extend_space$19 = function $$extend_space(ts, te) {
+      $def(self, '$extend_space', function $$extend_space(ts, te) {
         var self = this;
 
         
@@ -19464,20 +16884,20 @@ Opal.modules["parser/lexer/literal"] = function(Opal) {
           self.$emit("tSPACE", nil, ts, te);
           return (self.space_emitted = true);
         };
-      }, $Literal_extend_space$19.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$supports_line_continuation_via_slash?', $Literal_supports_line_continuation_via_slash$ques$20 = function() {
-        var self = this, $ret_or_16 = nil;
+      $def(self, '$supports_line_continuation_via_slash?', function $Literal_supports_line_continuation_via_slash$ques$10() {
+        var self = this, $ret_or_1 = nil;
 
-        if ($truthy(($ret_or_16 = self['$words?']()['$!']()))) {
+        if ($truthy(($ret_or_1 = self['$words?']()['$!']()))) {
           return self.interpolate
         } else {
-          return $ret_or_16
+          return $ret_or_1
         }
-      }, $Literal_supports_line_continuation_via_slash$ques$20.$$arity = 0);
+      }, 0);
       self.$protected();
       
-      Opal.def(self, '$delimiter?', $Literal_delimiter$ques$21 = function(delimiter) {
+      $def(self, '$delimiter?', function $Literal_delimiter$ques$11(delimiter) {
         var self = this;
 
         if ($truthy(self.indent)) {
@@ -19485,15 +16905,14 @@ Opal.modules["parser/lexer/literal"] = function(Opal) {
         } else {
           return self.end_delim['$=='](delimiter)
         }
-      }, $Literal_delimiter$ques$21.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$coerce_encoding', $Literal_coerce_encoding$22 = function $$coerce_encoding(string) {
-        var self = this;
-
+      $def(self, '$coerce_encoding', function $$coerce_encoding(string) {
+        
         return string.$b()
-      }, $Literal_coerce_encoding$22.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$clear_buffer', $Literal_clear_buffer$23 = function $$clear_buffer() {
+      $def(self, '$clear_buffer', function $$clear_buffer() {
         var self = this;
 
         
@@ -19501,316 +16920,258 @@ Opal.modules["parser/lexer/literal"] = function(Opal) {
         self.buffer.$force_encoding(self.lexer.$source_buffer().$source().$encoding());
         self.buffer_s = nil;
         return (self.buffer_e = nil);
-      }, $Literal_clear_buffer$23.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$emit_start_tok', $Literal_emit_start_tok$24 = function $$emit_start_tok() {
-        var self = this, str_e = nil, $ret_or_17 = nil;
+      $def(self, '$emit_start_tok', function $$emit_start_tok() {
+        var self = this, str_e = nil, $ret_or_1 = nil;
 
         
-        str_e = (function() {if ($truthy(($ret_or_17 = self.heredoc_e))) {
-          return $ret_or_17
-        } else {
-          return $rb_plus(self.str_s, self.str_type.$length())
-        }; return nil; })();
+        str_e = ($truthy(($ret_or_1 = self.heredoc_e)) ? ($ret_or_1) : ($rb_plus(self.str_s, self.str_type.$length())));
         return self.$emit(self.start_tok, self.str_type, self.str_s, str_e);
-      }, $Literal_emit_start_tok$24.$$arity = 0);
-      return (Opal.def(self, '$emit', $Literal_emit$25 = function $$emit(token, type, s, e) {
+      }, 0);
+      return $def(self, '$emit', function $$emit(token, type, s, e) {
         var self = this;
 
         return self.lexer.$send("emit", token, type, s, e)
-      }, $Literal_emit$25.$$arity = 4), nil) && 'emit';
-    })($$($nesting, 'Lexer'), null, $nesting)
+      }, 4);
+    })($$('Lexer'), null, $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/lexer/stack_state"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $alias = Opal.alias;
+Opal.modules["parser/lexer/stack_state"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $def = Opal.def, $truthy = Opal.truthy, $alias = Opal.alias;
 
-  Opal.add_stubs(['$freeze', '$clear', '$|', '$<<', '$&', '$>>', '$==', '$[]', '$to_s']);
+  Opal.add_stubs('freeze,clear,|,<<,&,>>,==,[],to_s');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
-    var $nesting = [self].concat($parent_nesting);
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-    return (function($base, $super, $parent_nesting) {
+    return (function($base, $super) {
       var self = $klass($base, $super, 'StackState');
 
-      var $nesting = [self].concat($parent_nesting), $StackState_initialize$1, $StackState_clear$2, $StackState_push$3, $StackState_pop$4, $StackState_lexpop$5, $StackState_active$ques$6, $StackState_empty$ques$7, $StackState_to_s$8;
+      var $proto = self.$$prototype;
 
-      self.$$prototype.stack = self.$$prototype.name = nil;
+      $proto.stack = $proto.name = nil;
       
       
-      Opal.def(self, '$initialize', $StackState_initialize$1 = function $$initialize(name) {
+      $def(self, '$initialize', function $$initialize(name) {
         var self = this;
 
         
         self.name = name.$freeze();
         return self.$clear();
-      }, $StackState_initialize$1.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$clear', $StackState_clear$2 = function $$clear() {
+      $def(self, '$clear', function $$clear() {
         var self = this;
 
         return (self.stack = 0)
-      }, $StackState_clear$2.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$push', $StackState_push$3 = function $$push(bit) {
+      $def(self, '$push', function $$push(bit) {
         var self = this, bit_value = nil;
 
         
-        bit_value = (function() {if ($truthy(bit)) {
-          return 1
-        } else {
-          return 0
-        }; return nil; })();
+        bit_value = ($truthy(bit) ? (1) : (0));
         self.stack = self.stack['$<<'](1)['$|'](bit_value);
         return bit;
-      }, $StackState_push$3.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$pop', $StackState_pop$4 = function $$pop() {
+      $def(self, '$pop', function $$pop() {
         var self = this, bit_value = nil;
 
         
         bit_value = self.stack['$&'](1);
         self.stack = self.stack['$>>'](1);
         return bit_value['$=='](1);
-      }, $StackState_pop$4.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$lexpop', $StackState_lexpop$5 = function $$lexpop() {
+      $def(self, '$lexpop', function $$lexpop() {
         var self = this;
 
         
         self.stack = self.stack['$>>'](1)['$|'](self.stack['$&'](1));
         return self.stack['$[]'](0)['$=='](1);
-      }, $StackState_lexpop$5.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$active?', $StackState_active$ques$6 = function() {
+      $def(self, '$active?', function $StackState_active$ques$1() {
         var self = this;
 
         return self.stack['$[]'](0)['$=='](1)
-      }, $StackState_active$ques$6.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$empty?', $StackState_empty$ques$7 = function() {
+      $def(self, '$empty?', function $StackState_empty$ques$2() {
         var self = this;
 
         return self.stack['$=='](0)
-      }, $StackState_empty$ques$7.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$to_s', $StackState_to_s$8 = function $$to_s() {
+      $def(self, '$to_s', function $$to_s() {
         var self = this;
 
-        return "" + "[" + (self.stack.$to_s(2)) + " <= " + (self.name) + "]"
-      }, $StackState_to_s$8.$$arity = 0);
+        return "[" + (self.stack.$to_s(2)) + " <= " + (self.name) + "]"
+      }, 0);
       return $alias(self, "inspect", "to_s");
-    })($$($nesting, 'Lexer'), null, $nesting)
+    })($$('Lexer'), null)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/lexer/dedenter"] = function(Opal) {
-  function $rb_le(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs <= rhs : lhs['$<='](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_times(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs * rhs : lhs['$*'](rhs);
-  }
-  function $rb_divide(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs / rhs : lhs['$/'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy, $slice = Opal.slice;
+Opal.modules["parser/lexer/dedenter"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $const_set = Opal.const_set, $def = Opal.def, $eqeq = Opal.eqeq, $send = Opal.send, $truthy = Opal.truthy, $to_ary = Opal.to_ary, $slice = Opal.slice, $rb_le = Opal.rb_le, $eqeqeq = Opal.eqeqeq, $rb_plus = Opal.rb_plus, $rb_minus = Opal.rb_minus, $rb_gt = Opal.rb_gt, $rb_times = Opal.rb_times, $rb_divide = Opal.rb_divide;
 
-  Opal.add_stubs(['$encoding', '$split', '$force_encoding', '$==', '$length', '$map!', '$each', '$each_char', '$<=', '$===', '$+', '$-', '$>', '$*', '$/', '$slice!', '$replace', '$join', '$end_with?']);
+  Opal.add_stubs('encoding,split,force_encoding,==,length,map!,each,each_char,<=,===,+,-,>,*,/,slice!,replace,join,end_with?');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
-    var $nesting = [self].concat($parent_nesting);
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Dedenter');
 
-      var $nesting = [self].concat($parent_nesting), $Dedenter_initialize$1, $Dedenter_dedent$2, $Dedenter_interrupt$6;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.at_line_begin = nil;
+      $proto.at_line_begin = nil;
       
-      Opal.const_set($nesting[0], 'TAB_WIDTH', 8);
+      $const_set($nesting[0], 'TAB_WIDTH', 8);
       
-      Opal.def(self, '$initialize', $Dedenter_initialize$1 = function $$initialize(dedent_level) {
+      $def(self, '$initialize', function $$initialize(dedent_level) {
         var self = this;
 
         
         self.dedent_level = dedent_level;
         self.at_line_begin = true;
         return (self.indent_level = 0);
-      }, $Dedenter_initialize$1.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$dedent', $Dedenter_dedent$2 = function $$dedent(string) {
-        var $$3, $a, $b, $$4, self = this, original_encoding = nil, lines = nil, lines_to_dedent = nil, _first = nil;
+      $def(self, '$dedent', function $$dedent(string) {
+        var $a, $b, self = this, original_encoding = nil, lines = nil, lines_to_dedent = nil, _first = nil;
 
         
         original_encoding = string.$encoding();
-        lines = string.$force_encoding($$$($$($nesting, 'Encoding'), 'BINARY')).$split("\\\n");
-        if (lines.$length()['$=='](1)) {
+        lines = string.$force_encoding($$$($$('Encoding'), 'BINARY')).$split("\\\n");
+        if ($eqeq(lines.$length(), 1)) {
           lines = [string.$force_encoding(original_encoding)]
         } else {
-          $send(lines, 'map!', [], ($$3 = function(s){var self = $$3.$$s == null ? this : $$3.$$s;
-
+          $send(lines, 'map!', [], function $$1(s){
             
             
-            if (s == null) {
-              s = nil;
-            };
-            return s.$force_encoding(original_encoding);}, $$3.$$s = self, $$3.$$arity = 1, $$3))
+            if (s == null) s = nil;;
+            return s.$force_encoding(original_encoding);}, 1)
         };
         if ($truthy(self.at_line_begin)) {
           lines_to_dedent = lines
         } else {
-          $b = lines, $a = Opal.to_ary($b), (_first = ($a[0] == null ? nil : $a[0])), (lines_to_dedent = $slice.call($a, 1)), $b
+          $b = lines, $a = $to_ary($b), (_first = ($a[0] == null ? nil : $a[0])), (lines_to_dedent = $slice.call($a, 1)), $b
         };
-        (function(){var $brk = Opal.new_brk(); try {return $send(lines_to_dedent, 'each', [], ($$4 = function(line){var self = $$4.$$s == null ? this : $$4.$$s, $$5, left_to_remove = nil, remove = nil;
+        (function(){var $brk = Opal.new_brk(); try {return $send(lines_to_dedent, 'each', [], function $$2(line){var self = $$2.$$s == null ? this : $$2.$$s, left_to_remove = nil, remove = nil;
           if (self.dedent_level == null) self.dedent_level = nil;
 
           
           
-          if (line == null) {
-            line = nil;
-          };
+          if (line == null) line = nil;;
           left_to_remove = self.dedent_level;
           remove = 0;
-          (function(){var $brk = Opal.new_brk(); try {return $send(line, 'each_char', [], ($$5 = function(char$){var self = $$5.$$s == null ? this : $$5.$$s, $case = nil;
+          (function(){var $brk = Opal.new_brk(); try {return $send(line, 'each_char', [], function $$3(char$){var self = $$3.$$s == null ? this : $$3.$$s, $ret_or_1 = nil;
             if (self.dedent_level == null) self.dedent_level = nil;
 
             
             
-            if (char$ == null) {
-              char$ = nil;
-            };
+            if (char$ == null) char$ = nil;;
             if ($truthy($rb_le(left_to_remove, 0))) {
               
-              Opal.brk(nil, $brk)};
-            return (function() {$case = char$;
-            if (" "['$===']($case)) {
-            remove = $rb_plus(remove, 1);
-            return (left_to_remove = $rb_minus(left_to_remove, 1));}
-            else if ("\t"['$===']($case)) {
-            if ($truthy($rb_gt($rb_times($$($nesting, 'TAB_WIDTH'), $rb_plus($rb_divide(remove, $$($nesting, 'TAB_WIDTH')), 1)), self.dedent_level))) {
+              Opal.brk(nil, $brk)
+            };
+            if ($eqeqeq(" ", ($ret_or_1 = char$))) {
               
-              Opal.brk(nil, $brk)};
-            remove = $rb_plus(remove, 1);
-            return (left_to_remove = $rb_minus(left_to_remove, $$($nesting, 'TAB_WIDTH')));}
-            else {
-            Opal.brk(nil, $brk)}})();}, $$5.$$s = self, $$5.$$brk = $brk, $$5.$$arity = 1, $$5))
+              remove = $rb_plus(remove, 1);
+              return (left_to_remove = $rb_minus(left_to_remove, 1));
+            } else if ($eqeqeq("\t", $ret_or_1)) {
+              
+              if ($truthy($rb_gt($rb_times($$('TAB_WIDTH'), $rb_plus($rb_divide(remove, $$('TAB_WIDTH')), 1)), self.dedent_level))) {
+                
+                Opal.brk(nil, $brk)
+              };
+              remove = $rb_plus(remove, 1);
+              return (left_to_remove = $rb_minus(left_to_remove, $$('TAB_WIDTH')));
+            } else {
+              
+              Opal.brk(nil, $brk)
+            };}, {$$arity: 1, $$s: self, $$brk: $brk})
           } catch (err) { if (err === $brk) { return err.$v } else { throw err } }})();
-          return line['$slice!'](0, remove);}, $$4.$$s = self, $$4.$$brk = $brk, $$4.$$arity = 1, $$4))
+          return line['$slice!'](0, remove);}, {$$arity: 1, $$s: self, $$brk: $brk})
         } catch (err) { if (err === $brk) { return err.$v } else { throw err } }})();
         string.$replace(lines.$join());
         return (self.at_line_begin = string['$end_with?']("\n"));
-      }, $Dedenter_dedent$2.$$arity = 1);
-      return (Opal.def(self, '$interrupt', $Dedenter_interrupt$6 = function $$interrupt() {
+      }, 1);
+      return $def(self, '$interrupt', function $$interrupt() {
         var self = this;
 
         return (self.at_line_begin = false)
-      }, $Dedenter_interrupt$6.$$arity = 0), nil) && 'interrupt';
-    })($$($nesting, 'Lexer'), null, $nesting)
+      }, 0);
+    })($$('Lexer'), null, $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/builders/default"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_ge(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs >= rhs : lhs['$>='](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_le(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs <= rhs : lhs['$<='](rhs);
-  }
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $hash2 = Opal.hash2, $truthy = Opal.truthy, $send = Opal.send, $range = Opal.range, $slice = Opal.slice;
+Opal.modules["parser/builders/default"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $def = Opal.def, $to_a = Opal.to_a, $eqeqeq = Opal.eqeqeq, $hash2 = Opal.hash2, $truthy = Opal.truthy, $eqeq = Opal.eqeq, $not = Opal.not, $send = Opal.send, $neqeq = Opal.neqeq, $to_ary = Opal.to_ary, $rb_minus = Opal.rb_minus, $rb_plus = Opal.rb_plus, $rb_ge = Opal.rb_ge, $range = Opal.range, $slice = Opal.slice, $rb_gt = Opal.rb_gt, $rb_le = Opal.rb_le, $rb_lt = Opal.rb_lt;
 
-  Opal.add_stubs(['$attr_accessor', '$n0', '$token_map', '$numeric', '$n', '$value', '$new', '$loc', '$private', '$===', '$+@', '$-@', '$updated', '$join', '$expression', '$string_value', '$delimited_string_map', '$unquoted_map', '$collapse_string_parts?', '$nil?', '$first', '$children', '$string_map', '$prefix_string_map', '$to_sym', '$collection_map', '$==', '$version', '$empty?', '$diagnostic', '$!', '$type', '$dedent', '$map', '$interrupt', '$compact', '$uniq', '$sort', '$each_char', '$to_proc', '$static_regexp', '$message', '$<<', '$regexp_map', '$unary_op_map', '$binary_op_map', '$!=', '$%', '$size', '$last', '$each_slice', '$pair_keyword_map', '$pair_quoted_map', '$symbol_compose', '$adjust', '$=~', '$pair_keyword', '$accessible', '$upto', '$-', '$length', '$+', '$[]', '$>=', '$range_map', '$variable_map', '$name', '$source_buffer', '$dup', '$line', '$emit_encoding', '$class', '$any?', '$end_with?', '$to_s', '$try_declare_numparam', '$declared?', '$static_env', '$var_send_map', '$top', '$current_arg_stack', '$parser', '$constant_map', '$in_def', '$context', '$check_assignment_to_numparam', '$check_reserved_for_numparam', '$declare', '$with_expression', '$with_operator', '$join_exprs', '$module_definition_map', '$definition_map', '$endless_definition_map', '$validate_definee', '$keyword_map', '$check_duplicate_args', '$validate_no_forward_arg_after_restarg', '$emit_forward_arg', '$forward_arg', '$arg_prefix_map', '$kwarg_map', '$emit_procarg0', '$emit_arg_inside_procarg0', '$location', '$resize', '$end', '$call_type_for_dot', '$emit_kwargs', '$rewrite_hash_args_to_kwargs', '$send_map', '$emit_lambda', '$expr_map', '$keyword', '$include?', '$block_map', '$array', '$emit_index', '$index_map', '$send_index_map', '$send_binary_op_map', '$static_regexp_node', '$each', '$names', '$send_unary_op_map', '$check_condition', '$condition_map', '$keyword_mod_map', '$ternary_map', '$for_map', '$>', '$count', '$rescue_body_map', '$eh_keyword_map', '$push', '$none?', '$one?', '$begin', '$guard_map', '$check_lvar_name', '$check_duplicate_pattern_variable', '$match_hash_var_from_str', '$match_var', '$check_duplicate_pattern_key', '$static_string', '$pair_quoted', '$match_hash_var', '$<=', '$check_duplicate_arg', '$is_a?', '$[]=', '$arg_name_collides?', '$<', '$in_dynamic_block?', '$has_numparams?', '$max_numparam_stack', '$start_with?', '$pattern_variables', '$pattern_hash_keys', '$with', '$begin_pos', '$end_pos', '$encode', '$valid_encoding?', '$process', '$diagnostics', '$send', '$kwargs?']);
+  Opal.add_stubs('attr_accessor,n0,token_map,numeric,n,value,new,loc,private,===,+@,-@,updated,join,expression,string_value,delimited_string_map,unquoted_map,collapse_string_parts?,nil?,first,children,string_map,prefix_string_map,to_sym,collection_map,empty?,==,version,diagnostic,!,type,dedent,map,interrupt,compact,uniq,sort,each_char,to_proc,static_regexp,message,<<,regexp_map,unary_op_map,binary_op_map,!=,%,size,last,each_slice,pair_keyword_map,pair_quoted_map,symbol_compose,adjust,=~,pair_keyword,accessible,upto,-,length,+,[],>=,range_map,variable_map,name,source_buffer,dup,line,emit_encoding,class,any?,end_with?,to_s,try_declare_numparam,declared?,static_env,var_send_map,top,current_arg_stack,parser,constant_map,in_def,context,check_assignment_to_numparam,check_reserved_for_numparam,declare,with_expression,with_operator,join_exprs,module_definition_map,definition_map,endless_definition_map,validate_definee,keyword_map,check_duplicate_args,validate_no_forward_arg_after_restarg,emit_forward_arg,forward_arg,arg_prefix_map,kwarg_map,emit_procarg0,emit_arg_inside_procarg0,location,resize,end,call_type_for_dot,emit_kwargs,rewrite_hash_args_to_kwargs,send_map,emit_lambda,expr_map,keyword,include?,block_map,array,emit_index,index_map,send_index_map,send_binary_op_map,static_regexp_node,each,names,send_unary_op_map,check_condition,condition_map,keyword_mod_map,ternary_map,for_map,>,count,rescue_body_map,eh_keyword_map,push,none?,one?,begin,guard_map,check_lvar_name,check_duplicate_pattern_variable,match_hash_var_from_str,match_var,check_duplicate_pattern_key,static_string,pair_quoted,match_hash_var,<=,check_duplicate_arg,is_a?,[]=,arg_name_collides?,<,in_dynamic_block?,has_numparams?,max_numparam_stack,start_with?,pattern_variables,pattern_hash_keys,with,begin_pos,end_pos,encode,valid_encoding?,process,diagnostics,send,kwargs?');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
-    var $nesting = [self].concat($parent_nesting);
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Default');
 
-      var $nesting = [self].concat($parent_nesting), $Default_initialize$2, $Default_nil$3, $Default_true$4, $Default_false$5, $Default_integer$6, $Default_float$7, $Default_rational$8, $Default_complex$9, $Default_numeric$10, $Default_unary_num$11, $Default___LINE__$12, $Default_string$13, $Default_string_internal$14, $Default_string_compose$15, $Default_character$16, $Default___FILE__$17, $Default_symbol$18, $Default_symbol_internal$19, $Default_symbol_compose$20, $Default_xstring_compose$21, $Default_dedent_string$22, $Default_regexp_options$24, $Default_regexp_compose$25, $Default_array$26, $Default_splat$27, $Default_word$28, $Default_words_compose$29, $Default_symbols_compose$30, $Default_pair$32, $Default_pair_list_18$33, $Default_pair_keyword$35, $Default_pair_quoted$36, $Default_pair_label$37, $Default_kwsplat$38, $Default_associate$39, $Default_range_inclusive$42, $Default_range_exclusive$43, $Default_self$44, $Default_ident$45, $Default_ivar$46, $Default_gvar$47, $Default_cvar$48, $Default_back_ref$49, $Default_nth_ref$50, $Default_accessible$51, $Default_const$53, $Default_const_global$54, $Default_const_fetch$55, $Default___ENCODING__$56, $Default_assignable$57, $Default_const_op_assignable$58, $Default_assign$59, $Default_op_assign$60, $Default_multi_lhs$61, $Default_multi_assign$62, $Default_def_class$63, $Default_def_sclass$64, $Default_def_module$65, $Default_def_method$66, $Default_def_endless_method$67, $Default_def_singleton$68, $Default_def_endless_singleton$69, $Default_undef_method$70, $Default_alias$71, $Default_args$72, $Default_numargs$73, $Default_forward_only_args$74, $Default_forward_arg$75, $Default_arg$76, $Default_optarg$77, $Default_restarg$78, $Default_kwarg$79, $Default_kwoptarg$80, $Default_kwrestarg$81, $Default_kwnilarg$82, $Default_shadowarg$83, $Default_blockarg$84, $Default_procarg0$85, $Default_arg_expr$86, $Default_restarg_expr$87, $Default_blockarg_expr$88, $Default_objc_kwarg$89, $Default_objc_restarg$90, $Default_call_type_for_dot$91, $Default_forwarded_args$92, $Default_call_method$93, $Default_call_lambda$94, $Default_block$95, $Default_block_pass$96, $Default_objc_varargs$97, $Default_attr_asgn$98, $Default_index$99, $Default_index_asgn$100, $Default_binary_op$101, $Default_match_op$102, $Default_unary_op$104, $Default_not_op$105, $Default_logical_op$106, $Default_condition$107, $Default_condition_mod$108, $Default_ternary$109, $Default_when$110, $Default_case$111, $Default_loop$112, $Default_loop_mod$113, $Default_for$114, $Default_keyword_cmd$115, $Default_preexe$116, $Default_postexe$117, $Default_rescue_body$118, $Default_begin_body$119, $Default_compstmt$120, $Default_begin$121, $Default_begin_keyword$122, $Default_case_match$123, $Default_in_match$124, $Default_match_pattern$125, $Default_match_pattern_p$126, $Default_in_pattern$127, $Default_if_guard$128, $Default_unless_guard$129, $Default_match_var$130, $Default_match_hash_var$131, $Default_match_hash_var_from_str$132, $Default_match_rest$133, $Default_hash_pattern$134, $Default_array_pattern$135, $Default_find_pattern$137, $Default_match_with_trailing_comma$138, $Default_const_pattern$139, $Default_pin$140, $Default_match_alt$141, $Default_match_as$142, $Default_match_nil_pattern$143, $Default_match_pair$144, $Default_match_label$145, $Default_check_condition$146, $Default_check_duplicate_args$147, $Default_check_duplicate_arg$149, $Default_validate_no_forward_arg_after_restarg$150, $Default_check_assignment_to_numparam$152, $Default_check_reserved_for_numparam$153, $Default_arg_name_collides$ques$154, $Default_check_lvar_name$155, $Default_check_duplicate_pattern_variable$156, $Default_check_duplicate_pattern_key$157, $Default_n$158, $Default_n0$159, $Default_join_exprs$160, $Default_token_map$161, $Default_delimited_string_map$162, $Default_prefix_string_map$163, $Default_unquoted_map$164, $Default_pair_keyword_map$165, $Default_pair_quoted_map$166, $Default_expr_map$167, $Default_collection_map$168, $Default_string_map$169, $Default_regexp_map$170, $Default_constant_map$171, $Default_variable_map$172, $Default_binary_op_map$173, $Default_unary_op_map$174, $Default_range_map$175, $Default_arg_prefix_map$176, $Default_kwarg_map$177, $Default_module_definition_map$178, $Default_definition_map$179, $Default_endless_definition_map$180, $Default_send_map$181, $Default_var_send_map$182, $Default_send_binary_op_map$183, $Default_send_unary_op_map$184, $Default_index_map$185, $Default_send_index_map$186, $Default_block_map$187, $Default_keyword_map$188, $Default_keyword_mod_map$189, $Default_condition_map$190, $Default_ternary_map$191, $Default_for_map$192, $Default_rescue_body_map$193, $Default_eh_keyword_map$194, $Default_guard_map$195, $Default_static_string$196, $Default_static_regexp$198, $Default_static_regexp_node$199, $Default_collapse_string_parts$ques$200, $Default_value$201, $Default_string_value$202, $Default_loc$203, $Default_diagnostic$204, $Default_validate_definee$205, $Default_rewrite_hash_args_to_kwargs$206, $Default_kwargs$ques$207;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.parser = self.$$prototype.emit_file_line_as_literals = nil;
+      $proto.parser = $proto.emit_file_line_as_literals = nil;
       
       (function(self, $parent_nesting) {
-        var $nesting = [self].concat($parent_nesting);
-
+        
         return self.$attr_accessor("emit_lambda")
       })(Opal.get_singleton_class(self), $nesting);
       self.emit_lambda = false;
       (function(self, $parent_nesting) {
-        var $nesting = [self].concat($parent_nesting);
-
+        
         return self.$attr_accessor("emit_procarg0")
       })(Opal.get_singleton_class(self), $nesting);
       self.emit_procarg0 = false;
       (function(self, $parent_nesting) {
-        var $nesting = [self].concat($parent_nesting);
-
+        
         return self.$attr_accessor("emit_encoding")
       })(Opal.get_singleton_class(self), $nesting);
       self.emit_encoding = false;
       (function(self, $parent_nesting) {
-        var $nesting = [self].concat($parent_nesting);
-
+        
         return self.$attr_accessor("emit_index")
       })(Opal.get_singleton_class(self), $nesting);
       self.emit_index = false;
       (function(self, $parent_nesting) {
-        var $nesting = [self].concat($parent_nesting);
-
+        
         return self.$attr_accessor("emit_arg_inside_procarg0")
       })(Opal.get_singleton_class(self), $nesting);
       self.emit_arg_inside_procarg0 = false;
       (function(self, $parent_nesting) {
-        var $nesting = [self].concat($parent_nesting);
-
+        
         return self.$attr_accessor("emit_forward_arg")
       })(Opal.get_singleton_class(self), $nesting);
       self.emit_forward_arg = false;
       (function(self, $parent_nesting) {
-        var $nesting = [self].concat($parent_nesting);
-
+        
         return self.$attr_accessor("emit_kwargs")
       })(Opal.get_singleton_class(self), $nesting);
       self.emit_kwargs = false;
       (function(self, $parent_nesting) {
-        var $nesting = [self].concat($parent_nesting);
-
+        
         return self.$attr_accessor("emit_match_pattern")
       })(Opal.get_singleton_class(self), $nesting);
       self.emit_match_pattern = false;
       (function(self, $parent_nesting) {
-        var $nesting = [self].concat($parent_nesting), $modernize$1;
-
-        return (Opal.def(self, '$modernize', $modernize$1 = function $$modernize() {
+        
+        return $def(self, '$modernize', function $$modernize() {
           var self = this;
 
           
@@ -19822,204 +17183,203 @@ Opal.modules["parser/builders/default"] = function(Opal) {
           self.emit_forward_arg = true;
           self.emit_kwargs = true;
           return (self.emit_match_pattern = true);
-        }, $modernize$1.$$arity = 0), nil) && 'modernize'
+        }, 0)
       })(Opal.get_singleton_class(self), $nesting);
       self.$attr_accessor("parser");
       self.$attr_accessor("emit_file_line_as_literals");
       
-      Opal.def(self, '$initialize', $Default_initialize$2 = function $$initialize() {
+      $def(self, '$initialize', function $$initialize() {
         var self = this;
 
         return (self.emit_file_line_as_literals = true)
-      }, $Default_initialize$2.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$nil', $Default_nil$3 = function $$nil(nil_t) {
+      $def(self, '$nil', function $$nil(nil_t) {
         var self = this;
 
         return self.$n0("nil", self.$token_map(nil_t))
-      }, $Default_nil$3.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$true', $Default_true$4 = function(true_t) {
+      $def(self, '$true', function $Default_true$1(true_t) {
         var self = this;
 
         return self.$n0("true", self.$token_map(true_t))
-      }, $Default_true$4.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$false', $Default_false$5 = function(false_t) {
+      $def(self, '$false', function $Default_false$2(false_t) {
         var self = this;
 
         return self.$n0("false", self.$token_map(false_t))
-      }, $Default_false$5.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$integer', $Default_integer$6 = function $$integer(integer_t) {
+      $def(self, '$integer', function $$integer(integer_t) {
         var self = this;
 
         return self.$numeric("int", integer_t)
-      }, $Default_integer$6.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$float', $Default_float$7 = function(float_t) {
+      $def(self, '$float', function $Default_float$3(float_t) {
         var self = this;
 
         return self.$numeric("float", float_t)
-      }, $Default_float$7.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$rational', $Default_rational$8 = function $$rational(rational_t) {
+      $def(self, '$rational', function $$rational(rational_t) {
         var self = this;
 
         return self.$numeric("rational", rational_t)
-      }, $Default_rational$8.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$complex', $Default_complex$9 = function $$complex(complex_t) {
+      $def(self, '$complex', function $$complex(complex_t) {
         var self = this;
 
         return self.$numeric("complex", complex_t)
-      }, $Default_complex$9.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$numeric', $Default_numeric$10 = function $$numeric(kind, token) {
+      $def(self, '$numeric', function $$numeric(kind, token) {
         var self = this;
 
-        return self.$n(kind, [self.$value(token)], $$$($$$($$($nesting, 'Source'), 'Map'), 'Operator').$new(nil, self.$loc(token)))
-      }, $Default_numeric$10.$$arity = 2);
+        return self.$n(kind, [self.$value(token)], $$$($$$($$('Source'), 'Map'), 'Operator').$new(nil, self.$loc(token)))
+      }, 2);
       self.$private("numeric");
       
-      Opal.def(self, '$unary_num', $Default_unary_num$11 = function $$unary_num(unary_t, numeric) {
-        var $a, self = this, value = nil, operator_loc = nil, $case = nil;
+      $def(self, '$unary_num', function $$unary_num(unary_t, numeric) {
+        var $a, self = this, value = nil, operator_loc = nil, $ret_or_1 = nil;
 
         
-        $a = [].concat(Opal.to_a(numeric)), (value = ($a[0] == null ? nil : $a[0])), $a;
+        $a = [].concat($to_a(numeric)), (value = ($a[0] == null ? nil : $a[0])), $a;
         operator_loc = self.$loc(unary_t);
-        $case = self.$value(unary_t);
-        if ("+"['$===']($case)) {value = value['$+@']()}
-        else if ("-"['$===']($case)) {value = value['$-@']()};
-        return numeric.$updated(nil, [value], $hash2(["location"], {"location": $$$($$$($$($nesting, 'Source'), 'Map'), 'Operator').$new(operator_loc, operator_loc.$join(numeric.$loc().$expression()))}));
-      }, $Default_unary_num$11.$$arity = 2);
+        if ($eqeqeq("+", ($ret_or_1 = self.$value(unary_t)))) {
+          value = value['$+@']()
+        } else if ($eqeqeq("-", $ret_or_1)) {
+          value = value['$-@']()
+        } else {
+          nil
+        };
+        return numeric.$updated(nil, [value], $hash2(["location"], {"location": $$$($$$($$('Source'), 'Map'), 'Operator').$new(operator_loc, operator_loc.$join(numeric.$loc().$expression()))}));
+      }, 2);
       
-      Opal.def(self, '$__LINE__', $Default___LINE__$12 = function $$__LINE__(__LINE__t) {
+      $def(self, '$__LINE__', function $$__LINE__(__LINE__t) {
         var self = this;
 
         return self.$n0("__LINE__", self.$token_map(__LINE__t))
-      }, $Default___LINE__$12.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$string', $Default_string$13 = function $$string(string_t) {
+      $def(self, '$string', function $$string(string_t) {
         var self = this;
 
         return self.$n("str", [self.$string_value(string_t)], self.$delimited_string_map(string_t))
-      }, $Default_string$13.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$string_internal', $Default_string_internal$14 = function $$string_internal(string_t) {
+      $def(self, '$string_internal', function $$string_internal(string_t) {
         var self = this;
 
         return self.$n("str", [self.$string_value(string_t)], self.$unquoted_map(string_t))
-      }, $Default_string_internal$14.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$string_compose', $Default_string_compose$15 = function $$string_compose(begin_t, parts, end_t) {
-        var self = this, $ret_or_1 = nil;
+      $def(self, '$string_compose', function $$string_compose(begin_t, parts, end_t) {
+        var self = this;
 
         if ($truthy(self['$collapse_string_parts?'](parts))) {
-          if ($truthy((function() {if ($truthy(($ret_or_1 = begin_t['$nil?']()))) {
-            return end_t['$nil?']()
-          } else {
-            return $ret_or_1
-          }; return nil; })())) {
+          if (($truthy(begin_t['$nil?']()) && ($truthy(end_t['$nil?']())))) {
             return parts.$first()
           } else {
             return self.$n("str", parts.$first().$children(), self.$string_map(begin_t, parts, end_t))
           }
         } else {
-          return self.$n("dstr", [].concat(Opal.to_a(parts)), self.$string_map(begin_t, parts, end_t))
+          return self.$n("dstr", [].concat($to_a(parts)), self.$string_map(begin_t, parts, end_t))
         }
-      }, $Default_string_compose$15.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$character', $Default_character$16 = function $$character(char_t) {
+      $def(self, '$character', function $$character(char_t) {
         var self = this;
 
         return self.$n("str", [self.$string_value(char_t)], self.$prefix_string_map(char_t))
-      }, $Default_character$16.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$__FILE__', $Default___FILE__$17 = function $$__FILE__(__FILE__t) {
+      $def(self, '$__FILE__', function $$__FILE__(__FILE__t) {
         var self = this;
 
         return self.$n0("__FILE__", self.$token_map(__FILE__t))
-      }, $Default___FILE__$17.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$symbol', $Default_symbol$18 = function $$symbol(symbol_t) {
+      $def(self, '$symbol', function $$symbol(symbol_t) {
         var self = this;
 
         return self.$n("sym", [self.$string_value(symbol_t).$to_sym()], self.$prefix_string_map(symbol_t))
-      }, $Default_symbol$18.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$symbol_internal', $Default_symbol_internal$19 = function $$symbol_internal(symbol_t) {
+      $def(self, '$symbol_internal', function $$symbol_internal(symbol_t) {
         var self = this;
 
         return self.$n("sym", [self.$string_value(symbol_t).$to_sym()], self.$unquoted_map(symbol_t))
-      }, $Default_symbol_internal$19.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$symbol_compose', $Default_symbol_compose$20 = function $$symbol_compose(begin_t, parts, end_t) {
-        var self = this, str = nil, $ret_or_2 = nil;
+      $def(self, '$symbol_compose', function $$symbol_compose(begin_t, parts, end_t) {
+        var self = this, str = nil;
 
         if ($truthy(self['$collapse_string_parts?'](parts))) {
           
           str = parts.$first();
           return self.$n("sym", [str.$children().$first().$to_sym()], self.$collection_map(begin_t, str.$loc().$expression(), end_t));
-        } else if ($truthy((function() {if ($truthy(($ret_or_2 = self.parser.$version()['$=='](18)))) {
-          return parts['$empty?']()
-        } else {
-          return $ret_or_2
-        }; return nil; })())) {
+        } else if (($eqeq(self.parser.$version(), 18) && ($truthy(parts['$empty?']())))) {
           return self.$diagnostic("error", "empty_symbol", nil, self.$loc(begin_t).$join(self.$loc(end_t)))
         } else {
-          return self.$n("dsym", [].concat(Opal.to_a(parts)), self.$collection_map(begin_t, parts, end_t))
+          return self.$n("dsym", [].concat($to_a(parts)), self.$collection_map(begin_t, parts, end_t))
         }
-      }, $Default_symbol_compose$20.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$xstring_compose', $Default_xstring_compose$21 = function $$xstring_compose(begin_t, parts, end_t) {
+      $def(self, '$xstring_compose', function $$xstring_compose(begin_t, parts, end_t) {
         var self = this;
 
-        return self.$n("xstr", [].concat(Opal.to_a(parts)), self.$string_map(begin_t, parts, end_t))
-      }, $Default_xstring_compose$21.$$arity = 3);
+        return self.$n("xstr", [].concat($to_a(parts)), self.$string_map(begin_t, parts, end_t))
+      }, 3);
       
-      Opal.def(self, '$dedent_string', $Default_dedent_string$22 = function $$dedent_string(node, dedent_level) {
-        var $$23, self = this, dedenter = nil, $case = nil, str = nil, children = nil;
+      $def(self, '$dedent_string', function $$dedent_string(node, dedent_level) {
+        var dedenter = nil, $ret_or_1 = nil, str = nil, children = nil;
 
         
-        if ($truthy(dedent_level['$nil?']()['$!']())) {
+        if ($not(dedent_level['$nil?']())) {
           
-          dedenter = $$$($$($nesting, 'Lexer'), 'Dedenter').$new(dedent_level);
-          $case = node.$type();
-          if ("str"['$===']($case)) {
-          str = node.$children().$first();
-          dedenter.$dedent(str);}
-          else if ("dstr"['$===']($case) || "xstr"['$===']($case)) {
-          children = $send(node.$children(), 'map', [], ($$23 = function(str_node){var self = $$23.$$s == null ? this : $$23.$$s;
-
+          dedenter = $$$($$('Lexer'), 'Dedenter').$new(dedent_level);
+          if ($eqeqeq("str", ($ret_or_1 = node.$type()))) {
             
+            str = node.$children().$first();
+            dedenter.$dedent(str);
+          } else if (($eqeqeq("dstr", $ret_or_1) || ($eqeqeq("xstr", $ret_or_1)))) {
             
-            if (str_node == null) {
-              str_node = nil;
-            };
-            if (str_node.$type()['$==']("str")) {
+            children = $send(node.$children(), 'map', [], function $$4(str_node){
               
-              str = str_node.$children().$first();
-              dedenter.$dedent(str);
-              if ($truthy(str['$empty?']())) {
-                return nil;};
-            } else {
-              dedenter.$interrupt()
-            };
-            return str_node;}, $$23.$$s = self, $$23.$$arity = 1, $$23));
-          node = node.$updated(nil, children.$compact());};};
+              
+              if (str_node == null) str_node = nil;;
+              if ($eqeq(str_node.$type(), "str")) {
+                
+                str = str_node.$children().$first();
+                dedenter.$dedent(str);
+                if ($truthy(str['$empty?']())) {
+                  return nil;
+                };
+              } else {
+                dedenter.$interrupt()
+              };
+              return str_node;}, 1);
+            node = node.$updated(nil, children.$compact());
+          } else {
+            nil
+          };
+        };
         return node;
-      }, $Default_dedent_string$22.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$regexp_options', $Default_regexp_options$24 = function $$regexp_options(regopt_t) {
+      $def(self, '$regexp_options', function $$regexp_options(regopt_t) {
         var self = this, options = nil;
 
         
         options = $send(self.$value(regopt_t).$each_char().$sort().$uniq(), 'map', [], "to_sym".$to_proc());
         return self.$n("regopt", options, self.$token_map(regopt_t));
-      }, $Default_regexp_options$24.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$regexp_compose', $Default_regexp_compose$25 = function $$regexp_compose(begin_t, parts, end_t, options) {
+      $def(self, '$regexp_compose', function $$regexp_compose(begin_t, parts, end_t, options) {
         var self = this, e = nil;
 
         
@@ -20027,473 +17387,469 @@ Opal.modules["parser/builders/default"] = function(Opal) {
         try {
           self.$static_regexp(parts, options)
         } catch ($err) {
-          if (Opal.rescue($err, [$$($nesting, 'RegexpError')])) {(e = $err)
+          if (Opal.rescue($err, [$$('RegexpError')])) {(e = $err)
             try {
               self.$diagnostic("error", "invalid_regexp", $hash2(["message"], {"message": e.$message()}), self.$loc(begin_t).$join(self.$loc(end_t)))
             } finally { Opal.pop_exception(); }
           } else { throw $err; }
         };;
         return self.$n("regexp", parts['$<<'](options), self.$regexp_map(begin_t, end_t, options));
-      }, $Default_regexp_compose$25.$$arity = 4);
+      }, 4);
       
-      Opal.def(self, '$array', $Default_array$26 = function $$array(begin_t, elements, end_t) {
+      $def(self, '$array', function $$array(begin_t, elements, end_t) {
         var self = this;
 
         return self.$n("array", elements, self.$collection_map(begin_t, elements, end_t))
-      }, $Default_array$26.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$splat', $Default_splat$27 = function $$splat(star_t, arg) {
+      $def(self, '$splat', function $$splat(star_t, arg) {
         var self = this;
 
         
         
-        if (arg == null) {
-          arg = nil;
-        };
+        if (arg == null) arg = nil;;
         if ($truthy(arg['$nil?']())) {
           return self.$n0("splat", self.$unary_op_map(star_t))
         } else {
           return self.$n("splat", [arg], self.$unary_op_map(star_t, arg))
         };
-      }, $Default_splat$27.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$word', $Default_word$28 = function $$word(parts) {
+      $def(self, '$word', function $$word(parts) {
         var self = this;
 
         if ($truthy(self['$collapse_string_parts?'](parts))) {
           return parts.$first()
         } else {
-          return self.$n("dstr", [].concat(Opal.to_a(parts)), self.$collection_map(nil, parts, nil))
+          return self.$n("dstr", [].concat($to_a(parts)), self.$collection_map(nil, parts, nil))
         }
-      }, $Default_word$28.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$words_compose', $Default_words_compose$29 = function $$words_compose(begin_t, parts, end_t) {
+      $def(self, '$words_compose', function $$words_compose(begin_t, parts, end_t) {
         var self = this;
 
-        return self.$n("array", [].concat(Opal.to_a(parts)), self.$collection_map(begin_t, parts, end_t))
-      }, $Default_words_compose$29.$$arity = 3);
+        return self.$n("array", [].concat($to_a(parts)), self.$collection_map(begin_t, parts, end_t))
+      }, 3);
       
-      Opal.def(self, '$symbols_compose', $Default_symbols_compose$30 = function $$symbols_compose(begin_t, parts, end_t) {
-        var $$31, self = this;
+      $def(self, '$symbols_compose', function $$symbols_compose(begin_t, parts, end_t) {
+        var self = this;
 
         
-        parts = $send(parts, 'map', [], ($$31 = function(part){var self = $$31.$$s == null ? this : $$31.$$s, $a, $case = nil, value = nil;
+        parts = $send(parts, 'map', [], function $$5(part){var $a, $ret_or_1 = nil, value = nil;
 
           
           
-          if (part == null) {
-            part = nil;
-          };
-          return (function() {$case = part.$type();
-          if ("str"['$===']($case)) {
-          $a = [].concat(Opal.to_a(part)), (value = ($a[0] == null ? nil : $a[0])), $a;
-          return part.$updated("sym", [value.$to_sym()]);}
-          else if ("dstr"['$===']($case)) {return part.$updated("dsym")}
-          else {return part}})();}, $$31.$$s = self, $$31.$$arity = 1, $$31));
-        return self.$n("array", [].concat(Opal.to_a(parts)), self.$collection_map(begin_t, parts, end_t));
-      }, $Default_symbols_compose$30.$$arity = 3);
+          if (part == null) part = nil;;
+          if ($eqeqeq("str", ($ret_or_1 = part.$type()))) {
+            
+            $a = [].concat($to_a(part)), (value = ($a[0] == null ? nil : $a[0])), $a;
+            return part.$updated("sym", [value.$to_sym()]);
+          } else if ($eqeqeq("dstr", $ret_or_1)) {
+            return part.$updated("dsym")
+          } else {
+            return part
+          };}, 1);
+        return self.$n("array", [].concat($to_a(parts)), self.$collection_map(begin_t, parts, end_t));
+      }, 3);
       
-      Opal.def(self, '$pair', $Default_pair$32 = function $$pair(key, assoc_t, value) {
+      $def(self, '$pair', function $$pair(key, assoc_t, value) {
         var self = this;
 
         return self.$n("pair", [key, value], self.$binary_op_map(key, assoc_t, value))
-      }, $Default_pair$32.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$pair_list_18', $Default_pair_list_18$33 = function $$pair_list_18(list) {
-        var $$34, self = this;
+      $def(self, '$pair_list_18', function $$pair_list_18(list) {
+        var self = this;
 
-        if ($truthy(list.$size()['$%'](2)['$!='](0))) {
+        if ($neqeq(list.$size()['$%'](2), 0)) {
           return self.$diagnostic("error", "odd_hash", nil, list.$last().$loc().$expression())
         } else {
-          return $send(list.$each_slice(2), 'map', [], ($$34 = function(key, value){var self = $$34.$$s == null ? this : $$34.$$s;
+          return $send(list.$each_slice(2), 'map', [], function $$6(key, value){var self = $$6.$$s == null ? this : $$6.$$s;
 
             
             
-            if (key == null) {
-              key = nil;
-            };
+            if (key == null) key = nil;;
             
-            if (value == null) {
-              value = nil;
-            };
-            return self.$n("pair", [key, value], self.$binary_op_map(key, nil, value));}, $$34.$$s = self, $$34.$$arity = 2, $$34))
+            if (value == null) value = nil;;
+            return self.$n("pair", [key, value], self.$binary_op_map(key, nil, value));}, {$$arity: 2, $$s: self})
         }
-      }, $Default_pair_list_18$33.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$pair_keyword', $Default_pair_keyword$35 = function $$pair_keyword(key_t, value) {
+      $def(self, '$pair_keyword', function $$pair_keyword(key_t, value) {
         var $a, $b, self = this, key_map = nil, pair_map = nil, key = nil;
 
         
-        $b = self.$pair_keyword_map(key_t, value), $a = Opal.to_ary($b), (key_map = ($a[0] == null ? nil : $a[0])), (pair_map = ($a[1] == null ? nil : $a[1])), $b;
+        $b = self.$pair_keyword_map(key_t, value), $a = $to_ary($b), (key_map = ($a[0] == null ? nil : $a[0])), (pair_map = ($a[1] == null ? nil : $a[1])), $b;
         key = self.$n("sym", [self.$value(key_t).$to_sym()], key_map);
         return self.$n("pair", [key, value], pair_map);
-      }, $Default_pair_keyword$35.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$pair_quoted', $Default_pair_quoted$36 = function $$pair_quoted(begin_t, parts, end_t, value) {
+      $def(self, '$pair_quoted', function $$pair_quoted(begin_t, parts, end_t, value) {
         var $a, $b, self = this, pair_map = nil, key = nil;
 
         
-        $b = self.$pair_quoted_map(begin_t, end_t, value), $a = Opal.to_ary($b), (end_t = ($a[0] == null ? nil : $a[0])), (pair_map = ($a[1] == null ? nil : $a[1])), $b;
+        $b = self.$pair_quoted_map(begin_t, end_t, value), $a = $to_ary($b), (end_t = ($a[0] == null ? nil : $a[0])), (pair_map = ($a[1] == null ? nil : $a[1])), $b;
         key = self.$symbol_compose(begin_t, parts, end_t);
         return self.$n("pair", [key, value], pair_map);
-      }, $Default_pair_quoted$36.$$arity = 4);
+      }, 4);
       
-      Opal.def(self, '$pair_label', $Default_pair_label$37 = function $$pair_label(key_t) {
+      $def(self, '$pair_label', function $$pair_label(key_t) {
         var self = this, key_l = nil, value_l = nil, label = nil, value = nil;
 
         
         key_l = self.$loc(key_t);
         value_l = key_l.$adjust($hash2(["end_pos"], {"end_pos": -1}));
         label = self.$value(key_t);
-        value = (function() {if ($truthy(label['$=~'](/^[[:lower:]]/))) {
-          return self.$n("ident", [label.$to_sym()], $$$($$$($$($nesting, 'Source'), 'Map'), 'Variable').$new(value_l))
-        } else {
-          return self.$n("const", [nil, label.$to_sym()], $$$($$$($$($nesting, 'Source'), 'Map'), 'Constant').$new(nil, value_l, value_l))
-        }; return nil; })();
+        value = ($truthy(label['$=~'](/^[[:lower:]]/)) ? (self.$n("ident", [label.$to_sym()], $$$($$$($$('Source'), 'Map'), 'Variable').$new(value_l))) : (self.$n("const", [nil, label.$to_sym()], $$$($$$($$('Source'), 'Map'), 'Constant').$new(nil, value_l, value_l))));
         return self.$pair_keyword(key_t, self.$accessible(value));
-      }, $Default_pair_label$37.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$kwsplat', $Default_kwsplat$38 = function $$kwsplat(dstar_t, arg) {
+      $def(self, '$kwsplat', function $$kwsplat(dstar_t, arg) {
         var self = this;
 
         return self.$n("kwsplat", [arg], self.$unary_op_map(dstar_t, arg))
-      }, $Default_kwsplat$38.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$associate', $Default_associate$39 = function $$associate(begin_t, pairs, end_t) {
-        var $$40, self = this;
+      $def(self, '$associate', function $$associate(begin_t, pairs, end_t) {
+        var self = this;
 
         
-        $send((0), 'upto', [$rb_minus(pairs.$length(), 1)], ($$40 = function(i){var self = $$40.$$s == null ? this : $$40.$$s, $$41;
+        $send((0), 'upto', [$rb_minus(pairs.$length(), 1)], function $$7(i){var self = $$7.$$s == null ? this : $$7.$$s;
 
           
           
-          if (i == null) {
-            i = nil;
-          };
-          return $send($rb_plus(i, 1), 'upto', [$rb_minus(pairs.$length(), 1)], ($$41 = function(j){var self = $$41.$$s == null ? this : $$41.$$s, $a, key1 = nil, key2 = nil, do_warn = nil, $case = nil, $ret_or_3 = nil;
+          if (i == null) i = nil;;
+          return $send($rb_plus(i, 1), 'upto', [$rb_minus(pairs.$length(), 1)], function $$8(j){var $a, self = $$8.$$s == null ? this : $$8.$$s, key1 = nil, key2 = nil, do_warn = nil, $ret_or_1 = nil;
             if (self.parser == null) self.parser = nil;
 
             
             
-            if (j == null) {
-              j = nil;
-            };
-            $a = [].concat(Opal.to_a(pairs['$[]'](i))), (key1 = ($a[0] == null ? nil : $a[0])), $a;
-            $a = [].concat(Opal.to_a(pairs['$[]'](j))), (key2 = ($a[0] == null ? nil : $a[0])), $a;
+            if (j == null) j = nil;;
+            $a = [].concat($to_a(pairs['$[]'](i))), (key1 = ($a[0] == null ? nil : $a[0])), $a;
+            $a = [].concat($to_a(pairs['$[]'](j))), (key2 = ($a[0] == null ? nil : $a[0])), $a;
             do_warn = false;
-            $case = key1.$type();
-            if ("sym"['$===']($case) || "str"['$===']($case) || "int"['$===']($case) || "float"['$===']($case)) {if (key1['$=='](key2)) {
-              do_warn = true}}
-            else if ("rational"['$===']($case) || "complex"['$===']($case) || "regexp"['$===']($case)) {if ($truthy((function() {if ($truthy(($ret_or_3 = $rb_ge(self.parser.$version(), 31)))) {
-              return key1['$=='](key2)
+            if (($eqeqeq("sym", ($ret_or_1 = key1.$type())) || (($eqeqeq("str", $ret_or_1) || (($eqeqeq("int", $ret_or_1) || ($eqeqeq("float", $ret_or_1)))))))) {
+              if ($eqeq(key1, key2)) {
+                do_warn = true
+              }
+            } else if (($eqeqeq("rational", $ret_or_1) || (($eqeqeq("complex", $ret_or_1) || ($eqeqeq("regexp", $ret_or_1)))))) {
+              if (($truthy($rb_ge(self.parser.$version(), 31)) && ($eqeq(key1, key2)))) {
+                do_warn = true
+              }
             } else {
-              return $ret_or_3
-            }; return nil; })())) {
-              do_warn = true}};
+              nil
+            };
             if ($truthy(do_warn)) {
               return self.$diagnostic("warning", "duplicate_hash_key", nil, key2.$loc().$expression())
             } else {
               return nil
-            };}, $$41.$$s = self, $$41.$$arity = 1, $$41));}, $$40.$$s = self, $$40.$$arity = 1, $$40));
-        return self.$n("hash", [].concat(Opal.to_a(pairs)), self.$collection_map(begin_t, pairs, end_t));
-      }, $Default_associate$39.$$arity = 3);
+            };}, {$$arity: 1, $$s: self});}, {$$arity: 1, $$s: self});
+        return self.$n("hash", [].concat($to_a(pairs)), self.$collection_map(begin_t, pairs, end_t));
+      }, 3);
       
-      Opal.def(self, '$range_inclusive', $Default_range_inclusive$42 = function $$range_inclusive(lhs, dot2_t, rhs) {
+      $def(self, '$range_inclusive', function $$range_inclusive(lhs, dot2_t, rhs) {
         var self = this;
 
         return self.$n("irange", [lhs, rhs], self.$range_map(lhs, dot2_t, rhs))
-      }, $Default_range_inclusive$42.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$range_exclusive', $Default_range_exclusive$43 = function $$range_exclusive(lhs, dot3_t, rhs) {
+      $def(self, '$range_exclusive', function $$range_exclusive(lhs, dot3_t, rhs) {
         var self = this;
 
         return self.$n("erange", [lhs, rhs], self.$range_map(lhs, dot3_t, rhs))
-      }, $Default_range_exclusive$43.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$self', $Default_self$44 = function $$self(token) {
+      $def(self, '$self', function $$self(token) {
         var self = this;
 
         return self.$n0("self", self.$token_map(token))
-      }, $Default_self$44.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$ident', $Default_ident$45 = function $$ident(token) {
+      $def(self, '$ident', function $$ident(token) {
         var self = this;
 
         return self.$n("ident", [self.$value(token).$to_sym()], self.$variable_map(token))
-      }, $Default_ident$45.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$ivar', $Default_ivar$46 = function $$ivar(token) {
+      $def(self, '$ivar', function $$ivar(token) {
         var self = this;
 
         return self.$n("ivar", [self.$value(token).$to_sym()], self.$variable_map(token))
-      }, $Default_ivar$46.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$gvar', $Default_gvar$47 = function $$gvar(token) {
+      $def(self, '$gvar', function $$gvar(token) {
         var self = this;
 
         return self.$n("gvar", [self.$value(token).$to_sym()], self.$variable_map(token))
-      }, $Default_gvar$47.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$cvar', $Default_cvar$48 = function $$cvar(token) {
+      $def(self, '$cvar', function $$cvar(token) {
         var self = this;
 
         return self.$n("cvar", [self.$value(token).$to_sym()], self.$variable_map(token))
-      }, $Default_cvar$48.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$back_ref', $Default_back_ref$49 = function $$back_ref(token) {
+      $def(self, '$back_ref', function $$back_ref(token) {
         var self = this;
 
         return self.$n("back_ref", [self.$value(token).$to_sym()], self.$token_map(token))
-      }, $Default_back_ref$49.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$nth_ref', $Default_nth_ref$50 = function $$nth_ref(token) {
+      $def(self, '$nth_ref', function $$nth_ref(token) {
         var self = this;
 
         return self.$n("nth_ref", [self.$value(token)], self.$token_map(token))
-      }, $Default_nth_ref$50.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$accessible', $Default_accessible$51 = function $$accessible(node) {
-        var $a, $$52, self = this, $case = nil, name = nil, $ret_or_4 = nil;
-
-        return (function() {$case = node.$type();
-        if ("__FILE__"['$===']($case)) {if ($truthy(self.emit_file_line_as_literals)) {
-          return self.$n("str", [node.$loc().$expression().$source_buffer().$name()], node.$loc().$dup())
-        } else {
-          return node
-        }}
-        else if ("__LINE__"['$===']($case)) {if ($truthy(self.emit_file_line_as_literals)) {
-          return self.$n("int", [node.$loc().$expression().$line()], node.$loc().$dup())
-        } else {
-          return node
-        }}
-        else if ("__ENCODING__"['$===']($case)) {if ($truthy(self.$class().$emit_encoding()['$!']())) {
-          return self.$n("const", [self.$n("const", [nil, "Encoding"], nil), "UTF_8"], node.$loc().$dup())
-        } else {
-          return node
-        }}
-        else if ("ident"['$===']($case)) {
-        $a = [].concat(Opal.to_a(node)), (name = ($a[0] == null ? nil : $a[0])), $a;
-        if ($truthy($send(["?", "!"], 'any?', [], ($$52 = function(c){var self = $$52.$$s == null ? this : $$52.$$s;
+      $def(self, '$accessible', function $$accessible(node) {
+        var $a, self = this, $ret_or_1 = nil, name = nil;
 
+        if ($eqeqeq("__FILE__", ($ret_or_1 = node.$type()))) {
+          if ($truthy(self.emit_file_line_as_literals)) {
+            return self.$n("str", [node.$loc().$expression().$source_buffer().$name()], node.$loc().$dup())
+          } else {
+            return node
+          }
+        } else if ($eqeqeq("__LINE__", $ret_or_1)) {
+          if ($truthy(self.emit_file_line_as_literals)) {
+            return self.$n("int", [node.$loc().$expression().$line()], node.$loc().$dup())
+          } else {
+            return node
+          }
+        } else if ($eqeqeq("__ENCODING__", $ret_or_1)) {
+          if ($not(self.$class().$emit_encoding())) {
+            return self.$n("const", [self.$n("const", [nil, "Encoding"], nil), "UTF_8"], node.$loc().$dup())
+          } else {
+            return node
+          }
+        } else if ($eqeqeq("ident", $ret_or_1)) {
           
-          
-          if (c == null) {
-            c = nil;
+          $a = [].concat($to_a(node)), (name = ($a[0] == null ? nil : $a[0])), $a;
+          if ($truthy($send(["?", "!"], 'any?', [], function $$9(c){
+            
+            
+            if (c == null) c = nil;;
+            return name.$to_s()['$end_with?'](c);}, 1))) {
+            self.$diagnostic("error", "invalid_id_to_get", $hash2(["identifier"], {"identifier": name.$to_s()}), node.$loc().$expression())
           };
-          return name.$to_s()['$end_with?'](c);}, $$52.$$s = self, $$52.$$arity = 1, $$52)))) {
-          self.$diagnostic("error", "invalid_id_to_get", $hash2(["identifier"], {"identifier": name.$to_s()}), node.$loc().$expression())};
-        if ($truthy((function() {if ($truthy(($ret_or_4 = $rb_ge(self.parser.$version(), 27)))) {
-          return self.parser.$try_declare_numparam(node)
-        } else {
-          return $ret_or_4
-        }; return nil; })())) {
-          return node.$updated("lvar")};
-        if ($truthy(self.parser.$static_env()['$declared?'](name))) {
+          if (($truthy($rb_ge(self.parser.$version(), 27)) && ($truthy(self.parser.$try_declare_numparam(node))))) {
+            return node.$updated("lvar")
+          };
+          if (!$truthy(self.parser.$static_env()['$declared?'](name))) {
+            return self.$n("send", [nil, name], self.$var_send_map(node))
+          };
+          if ($eqeq(name.$to_s(), self.$parser().$current_arg_stack().$top())) {
+            self.$diagnostic("error", "circular_argument_reference", $hash2(["var_name"], {"var_name": name.$to_s()}), node.$loc().$expression())
+          };
+          return node.$updated("lvar");
         } else {
-          return self.$n("send", [nil, name], self.$var_send_map(node))
-        };
-        if (name.$to_s()['$=='](self.$parser().$current_arg_stack().$top())) {
-          self.$diagnostic("error", "circular_argument_reference", $hash2(["var_name"], {"var_name": name.$to_s()}), node.$loc().$expression())};
-        return node.$updated("lvar");}
-        else {return node}})()
-      }, $Default_accessible$51.$$arity = 1);
+          return node
+        }
+      }, 1);
       
-      Opal.def(self, '$const', $Default_const$53 = function(name_t) {
+      $def(self, '$const', function $Default_const$10(name_t) {
         var self = this;
 
         return self.$n("const", [nil, self.$value(name_t).$to_sym()], self.$constant_map(nil, nil, name_t))
-      }, $Default_const$53.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$const_global', $Default_const_global$54 = function $$const_global(t_colon3, name_t) {
+      $def(self, '$const_global', function $$const_global(t_colon3, name_t) {
         var self = this, cbase = nil;
 
         
         cbase = self.$n0("cbase", self.$token_map(t_colon3));
         return self.$n("const", [cbase, self.$value(name_t).$to_sym()], self.$constant_map(cbase, t_colon3, name_t));
-      }, $Default_const_global$54.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$const_fetch', $Default_const_fetch$55 = function $$const_fetch(scope, t_colon2, name_t) {
+      $def(self, '$const_fetch', function $$const_fetch(scope, t_colon2, name_t) {
         var self = this;
 
         return self.$n("const", [scope, self.$value(name_t).$to_sym()], self.$constant_map(scope, t_colon2, name_t))
-      }, $Default_const_fetch$55.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$__ENCODING__', $Default___ENCODING__$56 = function $$__ENCODING__(__ENCODING__t) {
+      $def(self, '$__ENCODING__', function $$__ENCODING__(__ENCODING__t) {
         var self = this;
 
         return self.$n0("__ENCODING__", self.$token_map(__ENCODING__t))
-      }, $Default___ENCODING__$56.$$arity = 1);
-      
-      Opal.def(self, '$assignable', $Default_assignable$57 = function $$assignable(node) {
-        var $a, self = this, $case = nil, name = nil, var_name = nil, name_loc = nil;
-
-        return (function() {$case = node.$type();
-        if ("cvar"['$===']($case)) {return node.$updated("cvasgn")}
-        else if ("ivar"['$===']($case)) {return node.$updated("ivasgn")}
-        else if ("gvar"['$===']($case)) {return node.$updated("gvasgn")}
-        else if ("const"['$===']($case)) {
-        if ($truthy(self.parser.$context().$in_def())) {
-          self.$diagnostic("error", "dynamic_const", nil, node.$loc().$expression())};
-        return node.$updated("casgn");}
-        else if ("ident"['$===']($case)) {
-        $a = [].concat(Opal.to_a(node)), (name = ($a[0] == null ? nil : $a[0])), $a;
-        var_name = node.$children()['$[]'](0).$to_s();
-        name_loc = node.$loc().$expression();
-        self.$check_assignment_to_numparam(var_name, name_loc);
-        self.$check_reserved_for_numparam(var_name, name_loc);
-        self.parser.$static_env().$declare(name);
-        return node.$updated("lvasgn");}
-        else if ("match_var"['$===']($case)) {
-        $a = [].concat(Opal.to_a(node)), (name = ($a[0] == null ? nil : $a[0])), $a;
-        var_name = node.$children()['$[]'](0).$to_s();
-        name_loc = node.$loc().$expression();
-        self.$check_assignment_to_numparam(var_name, name_loc);
-        self.$check_reserved_for_numparam(var_name, name_loc);
-        return node;}
-        else if ("nil"['$===']($case) || "self"['$===']($case) || "true"['$===']($case) || "false"['$===']($case) || "__FILE__"['$===']($case) || "__LINE__"['$===']($case) || "__ENCODING__"['$===']($case)) {return self.$diagnostic("error", "invalid_assignment", nil, node.$loc().$expression())}
-        else if ("back_ref"['$===']($case) || "nth_ref"['$===']($case)) {return self.$diagnostic("error", "backref_assignment", nil, node.$loc().$expression())}
-        else { return nil }})()
-      }, $Default_assignable$57.$$arity = 1);
-      
-      Opal.def(self, '$const_op_assignable', $Default_const_op_assignable$58 = function $$const_op_assignable(node) {
-        var self = this;
+      }, 1);
+      
+      $def(self, '$assignable', function $$assignable(node) {
+        var $a, self = this, $ret_or_1 = nil, name = nil, var_name = nil, name_loc = nil;
 
+        if ($eqeqeq("cvar", ($ret_or_1 = node.$type()))) {
+          return node.$updated("cvasgn")
+        } else if ($eqeqeq("ivar", $ret_or_1)) {
+          return node.$updated("ivasgn")
+        } else if ($eqeqeq("gvar", $ret_or_1)) {
+          return node.$updated("gvasgn")
+        } else if ($eqeqeq("const", $ret_or_1)) {
+          
+          if ($truthy(self.parser.$context().$in_def())) {
+            self.$diagnostic("error", "dynamic_const", nil, node.$loc().$expression())
+          };
+          return node.$updated("casgn");
+        } else if ($eqeqeq("ident", $ret_or_1)) {
+          
+          $a = [].concat($to_a(node)), (name = ($a[0] == null ? nil : $a[0])), $a;
+          var_name = node.$children()['$[]'](0).$to_s();
+          name_loc = node.$loc().$expression();
+          self.$check_assignment_to_numparam(var_name, name_loc);
+          self.$check_reserved_for_numparam(var_name, name_loc);
+          self.parser.$static_env().$declare(name);
+          return node.$updated("lvasgn");
+        } else if ($eqeqeq("match_var", $ret_or_1)) {
+          
+          $a = [].concat($to_a(node)), (name = ($a[0] == null ? nil : $a[0])), $a;
+          var_name = node.$children()['$[]'](0).$to_s();
+          name_loc = node.$loc().$expression();
+          self.$check_assignment_to_numparam(var_name, name_loc);
+          self.$check_reserved_for_numparam(var_name, name_loc);
+          return node;
+        } else if (($eqeqeq("nil", $ret_or_1) || (($eqeqeq("self", $ret_or_1) || (($eqeqeq("true", $ret_or_1) || (($eqeqeq("false", $ret_or_1) || (($eqeqeq("__FILE__", $ret_or_1) || (($eqeqeq("__LINE__", $ret_or_1) || ($eqeqeq("__ENCODING__", $ret_or_1)))))))))))))) {
+          return self.$diagnostic("error", "invalid_assignment", nil, node.$loc().$expression())
+        } else if (($eqeqeq("back_ref", $ret_or_1) || ($eqeqeq("nth_ref", $ret_or_1)))) {
+          return self.$diagnostic("error", "backref_assignment", nil, node.$loc().$expression())
+        } else {
+          return nil
+        }
+      }, 1);
+      
+      $def(self, '$const_op_assignable', function $$const_op_assignable(node) {
+        
         return node.$updated("casgn")
-      }, $Default_const_op_assignable$58.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$assign', $Default_assign$59 = function $$assign(lhs, eql_t, rhs) {
+      $def(self, '$assign', function $$assign(lhs, eql_t, rhs) {
         var self = this;
 
         return lhs['$<<'](rhs).$updated(nil, nil, $hash2(["location"], {"location": lhs.$loc().$with_operator(self.$loc(eql_t)).$with_expression(self.$join_exprs(lhs, rhs))}))
-      }, $Default_assign$59.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$op_assign', $Default_op_assign$60 = function $$op_assign(lhs, op_t, rhs) {
-        var self = this, $case = nil, operator = nil, source_map = nil;
+      $def(self, '$op_assign', function $$op_assign(lhs, op_t, rhs) {
+        var self = this, $ret_or_1 = nil, operator = nil, source_map = nil, $ret_or_2 = nil;
 
-        return (function() {$case = lhs.$type();
-        if ("gvasgn"['$===']($case) || "ivasgn"['$===']($case) || "lvasgn"['$===']($case) || "cvasgn"['$===']($case) || "casgn"['$===']($case) || "send"['$===']($case) || "csend"['$===']($case) || "index"['$===']($case)) {
-        operator = self.$value(op_t)['$[]']($range(0, -1, false)).$to_sym();
-        source_map = lhs.$loc().$with_operator(self.$loc(op_t)).$with_expression(self.$join_exprs(lhs, rhs));
-        if (lhs.$type()['$==']("index")) {
-          lhs = lhs.$updated("indexasgn")};
-        return (function() {$case = operator;
-        if ("&&"['$===']($case)) {return self.$n("and_asgn", [lhs, rhs], source_map)}
-        else if ("||"['$===']($case)) {return self.$n("or_asgn", [lhs, rhs], source_map)}
-        else {return self.$n("op_asgn", [lhs, operator, rhs], source_map)}})();}
-        else if ("back_ref"['$===']($case) || "nth_ref"['$===']($case)) {return self.$diagnostic("error", "backref_assignment", nil, lhs.$loc().$expression())}
-        else { return nil }})()
-      }, $Default_op_assign$60.$$arity = 3);
+        if (($eqeqeq("gvasgn", ($ret_or_1 = lhs.$type())) || (($eqeqeq("ivasgn", $ret_or_1) || (($eqeqeq("lvasgn", $ret_or_1) || (($eqeqeq("cvasgn", $ret_or_1) || (($eqeqeq("casgn", $ret_or_1) || (($eqeqeq("send", $ret_or_1) || (($eqeqeq("csend", $ret_or_1) || ($eqeqeq("index", $ret_or_1)))))))))))))))) {
+          
+          operator = self.$value(op_t)['$[]']($range(0, -1, false)).$to_sym();
+          source_map = lhs.$loc().$with_operator(self.$loc(op_t)).$with_expression(self.$join_exprs(lhs, rhs));
+          if ($eqeq(lhs.$type(), "index")) {
+            lhs = lhs.$updated("indexasgn")
+          };
+          if ($eqeqeq("&&", ($ret_or_2 = operator))) {
+            return self.$n("and_asgn", [lhs, rhs], source_map)
+          } else if ($eqeqeq("||", $ret_or_2)) {
+            return self.$n("or_asgn", [lhs, rhs], source_map)
+          } else {
+            return self.$n("op_asgn", [lhs, operator, rhs], source_map)
+          };
+        } else if (($eqeqeq("back_ref", $ret_or_1) || ($eqeqeq("nth_ref", $ret_or_1)))) {
+          return self.$diagnostic("error", "backref_assignment", nil, lhs.$loc().$expression())
+        } else {
+          return nil
+        }
+      }, 3);
       
-      Opal.def(self, '$multi_lhs', $Default_multi_lhs$61 = function $$multi_lhs(begin_t, items, end_t) {
+      $def(self, '$multi_lhs', function $$multi_lhs(begin_t, items, end_t) {
         var self = this;
 
-        return self.$n("mlhs", [].concat(Opal.to_a(items)), self.$collection_map(begin_t, items, end_t))
-      }, $Default_multi_lhs$61.$$arity = 3);
+        return self.$n("mlhs", [].concat($to_a(items)), self.$collection_map(begin_t, items, end_t))
+      }, 3);
       
-      Opal.def(self, '$multi_assign', $Default_multi_assign$62 = function $$multi_assign(lhs, eql_t, rhs) {
+      $def(self, '$multi_assign', function $$multi_assign(lhs, eql_t, rhs) {
         var self = this;
 
         return self.$n("masgn", [lhs, rhs], self.$binary_op_map(lhs, eql_t, rhs))
-      }, $Default_multi_assign$62.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$def_class', $Default_def_class$63 = function $$def_class(class_t, name, lt_t, superclass, body, end_t) {
+      $def(self, '$def_class', function $$def_class(class_t, name, lt_t, superclass, body, end_t) {
         var self = this;
 
         return self.$n("class", [name, superclass, body], self.$module_definition_map(class_t, name, lt_t, end_t))
-      }, $Default_def_class$63.$$arity = 6);
+      }, 6);
       
-      Opal.def(self, '$def_sclass', $Default_def_sclass$64 = function $$def_sclass(class_t, lshft_t, expr, body, end_t) {
+      $def(self, '$def_sclass', function $$def_sclass(class_t, lshft_t, expr, body, end_t) {
         var self = this;
 
         return self.$n("sclass", [expr, body], self.$module_definition_map(class_t, nil, lshft_t, end_t))
-      }, $Default_def_sclass$64.$$arity = 5);
+      }, 5);
       
-      Opal.def(self, '$def_module', $Default_def_module$65 = function $$def_module(module_t, name, body, end_t) {
+      $def(self, '$def_module', function $$def_module(module_t, name, body, end_t) {
         var self = this;
 
         return self.$n("module", [name, body], self.$module_definition_map(module_t, name, nil, end_t))
-      }, $Default_def_module$65.$$arity = 4);
+      }, 4);
       
-      Opal.def(self, '$def_method', $Default_def_method$66 = function $$def_method(def_t, name_t, args, body, end_t) {
+      $def(self, '$def_method', function $$def_method(def_t, name_t, args, body, end_t) {
         var self = this;
 
         
         self.$check_reserved_for_numparam(self.$value(name_t), self.$loc(name_t));
         return self.$n("def", [self.$value(name_t).$to_sym(), args, body], self.$definition_map(def_t, nil, name_t, end_t));
-      }, $Default_def_method$66.$$arity = 5);
+      }, 5);
       
-      Opal.def(self, '$def_endless_method', $Default_def_endless_method$67 = function $$def_endless_method(def_t, name_t, args, assignment_t, body) {
+      $def(self, '$def_endless_method', function $$def_endless_method(def_t, name_t, args, assignment_t, body) {
         var self = this;
 
         
         self.$check_reserved_for_numparam(self.$value(name_t), self.$loc(name_t));
         return self.$n("def", [self.$value(name_t).$to_sym(), args, body], self.$endless_definition_map(def_t, nil, name_t, assignment_t, body));
-      }, $Default_def_endless_method$67.$$arity = 5);
+      }, 5);
       
-      Opal.def(self, '$def_singleton', $Default_def_singleton$68 = function $$def_singleton(def_t, definee, dot_t, name_t, args, body, end_t) {
+      $def(self, '$def_singleton', function $$def_singleton(def_t, definee, dot_t, name_t, args, body, end_t) {
         var self = this;
 
         
         self.$validate_definee(definee);
         self.$check_reserved_for_numparam(self.$value(name_t), self.$loc(name_t));
         return self.$n("defs", [definee, self.$value(name_t).$to_sym(), args, body], self.$definition_map(def_t, dot_t, name_t, end_t));
-      }, $Default_def_singleton$68.$$arity = 7);
+      }, 7);
       
-      Opal.def(self, '$def_endless_singleton', $Default_def_endless_singleton$69 = function $$def_endless_singleton(def_t, definee, dot_t, name_t, args, assignment_t, body) {
+      $def(self, '$def_endless_singleton', function $$def_endless_singleton(def_t, definee, dot_t, name_t, args, assignment_t, body) {
         var self = this;
 
         
         self.$validate_definee(definee);
         self.$check_reserved_for_numparam(self.$value(name_t), self.$loc(name_t));
         return self.$n("defs", [definee, self.$value(name_t).$to_sym(), args, body], self.$endless_definition_map(def_t, dot_t, name_t, assignment_t, body));
-      }, $Default_def_endless_singleton$69.$$arity = 7);
+      }, 7);
       
-      Opal.def(self, '$undef_method', $Default_undef_method$70 = function $$undef_method(undef_t, names) {
+      $def(self, '$undef_method', function $$undef_method(undef_t, names) {
         var self = this;
 
-        return self.$n("undef", [].concat(Opal.to_a(names)), self.$keyword_map(undef_t, nil, names, nil))
-      }, $Default_undef_method$70.$$arity = 2);
+        return self.$n("undef", [].concat($to_a(names)), self.$keyword_map(undef_t, nil, names, nil))
+      }, 2);
       
-      Opal.def(self, '$alias', $Default_alias$71 = function $$alias(alias_t, to, from) {
+      $def(self, '$alias', function $$alias(alias_t, to, from) {
         var self = this;
 
         return self.$n("alias", [to, from], self.$keyword_map(alias_t, nil, [to, from], nil))
-      }, $Default_alias$71.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$args', $Default_args$72 = function $$args(begin_t, args, end_t, check_args) {
-        var self = this, map = nil, $ret_or_5 = nil, $ret_or_6 = nil;
+      $def(self, '$args', function $$args(begin_t, args, end_t, check_args) {
+        var self = this, map = nil;
 
         
         
-        if (check_args == null) {
-          check_args = true;
-        };
+        if (check_args == null) check_args = true;;
         if ($truthy(check_args)) {
-          args = self.$check_duplicate_args(args)};
+          args = self.$check_duplicate_args(args)
+        };
         self.$validate_no_forward_arg_after_restarg(args);
         map = self.$collection_map(begin_t, args, end_t);
-        if ($truthy((function() {if ($truthy(($ret_or_5 = (function() {if ($truthy(($ret_or_6 = self.$class().$emit_forward_arg()['$!']()))) {
-          return args.$length()['$=='](1)
-        } else {
-          return $ret_or_6
-        }; return nil; })()))) {
-          return args['$[]'](0).$type()['$==']("forward_arg")
-        } else {
-          return $ret_or_5
-        }; return nil; })())) {
+        if ((($not(self.$class().$emit_forward_arg()) && ($eqeq(args.$length(), 1))) && ($eqeq(args['$[]'](0).$type(), "forward_arg")))) {
           return self.$n("forward_args", [], map)
         } else {
           return self.$n("args", args, map)
         };
-      }, $Default_args$72.$$arity = -4);
+      }, -4);
       
-      Opal.def(self, '$numargs', $Default_numargs$73 = function $$numargs(max_numparam) {
+      $def(self, '$numargs', function $$numargs(max_numparam) {
         var self = this;
 
         return self.$n("numargs", [max_numparam], nil)
-      }, $Default_numargs$73.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$forward_only_args', $Default_forward_only_args$74 = function $$forward_only_args(begin_t, dots_t, end_t) {
+      $def(self, '$forward_only_args', function $$forward_only_args(begin_t, dots_t, end_t) {
         var self = this, arg = nil;
 
         if ($truthy(self.$class().$emit_forward_arg())) {
@@ -20503,38 +17859,36 @@ Opal.modules["parser/builders/default"] = function(Opal) {
         } else {
           return self.$n("forward_args", [], self.$collection_map(begin_t, self.$token_map(dots_t), end_t))
         }
-      }, $Default_forward_only_args$74.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$forward_arg', $Default_forward_arg$75 = function $$forward_arg(dots_t) {
+      $def(self, '$forward_arg', function $$forward_arg(dots_t) {
         var self = this;
 
         return self.$n("forward_arg", [], self.$token_map(dots_t))
-      }, $Default_forward_arg$75.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$arg', $Default_arg$76 = function $$arg(name_t) {
+      $def(self, '$arg', function $$arg(name_t) {
         var self = this;
 
         
         self.$check_reserved_for_numparam(self.$value(name_t), self.$loc(name_t));
         return self.$n("arg", [self.$value(name_t).$to_sym()], self.$variable_map(name_t));
-      }, $Default_arg$76.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$optarg', $Default_optarg$77 = function $$optarg(name_t, eql_t, value) {
+      $def(self, '$optarg', function $$optarg(name_t, eql_t, value) {
         var self = this;
 
         
         self.$check_reserved_for_numparam(self.$value(name_t), self.$loc(name_t));
         return self.$n("optarg", [self.$value(name_t).$to_sym(), value], self.$variable_map(name_t).$with_operator(self.$loc(eql_t)).$with_expression(self.$loc(name_t).$join(value.$loc().$expression())));
-      }, $Default_optarg$77.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$restarg', $Default_restarg$78 = function $$restarg(star_t, name_t) {
+      $def(self, '$restarg', function $$restarg(star_t, name_t) {
         var self = this;
 
         
         
-        if (name_t == null) {
-          name_t = nil;
-        };
+        if (name_t == null) name_t = nil;;
         if ($truthy(name_t)) {
           
           self.$check_reserved_for_numparam(self.$value(name_t), self.$loc(name_t));
@@ -20542,32 +17896,30 @@ Opal.modules["parser/builders/default"] = function(Opal) {
         } else {
           return self.$n0("restarg", self.$arg_prefix_map(star_t))
         };
-      }, $Default_restarg$78.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$kwarg', $Default_kwarg$79 = function $$kwarg(name_t) {
+      $def(self, '$kwarg', function $$kwarg(name_t) {
         var self = this;
 
         
         self.$check_reserved_for_numparam(self.$value(name_t), self.$loc(name_t));
         return self.$n("kwarg", [self.$value(name_t).$to_sym()], self.$kwarg_map(name_t));
-      }, $Default_kwarg$79.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$kwoptarg', $Default_kwoptarg$80 = function $$kwoptarg(name_t, value) {
+      $def(self, '$kwoptarg', function $$kwoptarg(name_t, value) {
         var self = this;
 
         
         self.$check_reserved_for_numparam(self.$value(name_t), self.$loc(name_t));
         return self.$n("kwoptarg", [self.$value(name_t).$to_sym(), value], self.$kwarg_map(name_t, value));
-      }, $Default_kwoptarg$80.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$kwrestarg', $Default_kwrestarg$81 = function $$kwrestarg(dstar_t, name_t) {
+      $def(self, '$kwrestarg', function $$kwrestarg(dstar_t, name_t) {
         var self = this;
 
         
         
-        if (name_t == null) {
-          name_t = nil;
-        };
+        if (name_t == null) name_t = nil;;
         if ($truthy(name_t)) {
           
           self.$check_reserved_for_numparam(self.$value(name_t), self.$loc(name_t));
@@ -20575,92 +17927,83 @@ Opal.modules["parser/builders/default"] = function(Opal) {
         } else {
           return self.$n0("kwrestarg", self.$arg_prefix_map(dstar_t))
         };
-      }, $Default_kwrestarg$81.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$kwnilarg', $Default_kwnilarg$82 = function $$kwnilarg(dstar_t, nil_t) {
+      $def(self, '$kwnilarg', function $$kwnilarg(dstar_t, nil_t) {
         var self = this;
 
         return self.$n0("kwnilarg", self.$arg_prefix_map(dstar_t, nil_t))
-      }, $Default_kwnilarg$82.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$shadowarg', $Default_shadowarg$83 = function $$shadowarg(name_t) {
+      $def(self, '$shadowarg', function $$shadowarg(name_t) {
         var self = this;
 
         
         self.$check_reserved_for_numparam(self.$value(name_t), self.$loc(name_t));
         return self.$n("shadowarg", [self.$value(name_t).$to_sym()], self.$variable_map(name_t));
-      }, $Default_shadowarg$83.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$blockarg', $Default_blockarg$84 = function $$blockarg(amper_t, name_t) {
+      $def(self, '$blockarg', function $$blockarg(amper_t, name_t) {
         var self = this, arg_name = nil;
 
         
-        if ($truthy(name_t['$nil?']()['$!']())) {
-          self.$check_reserved_for_numparam(self.$value(name_t), self.$loc(name_t))};
-        arg_name = (function() {if ($truthy(name_t)) {
-          return self.$value(name_t).$to_sym()
-        } else {
-          return nil
-        }; return nil; })();
+        if ($not(name_t['$nil?']())) {
+          self.$check_reserved_for_numparam(self.$value(name_t), self.$loc(name_t))
+        };
+        arg_name = ($truthy(name_t) ? (self.$value(name_t).$to_sym()) : (nil));
         return self.$n("blockarg", [arg_name], self.$arg_prefix_map(amper_t, name_t));
-      }, $Default_blockarg$84.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$procarg0', $Default_procarg0$85 = function $$procarg0(arg) {
-        var self = this, $ret_or_7 = nil;
+      $def(self, '$procarg0', function $$procarg0(arg) {
+        var self = this;
 
         if ($truthy(self.$class().$emit_procarg0())) {
-          if ($truthy((function() {if ($truthy(($ret_or_7 = arg.$type()['$==']("arg")))) {
-            return self.$class().$emit_arg_inside_procarg0()
-          } else {
-            return $ret_or_7
-          }; return nil; })())) {
-            return self.$n("procarg0", [arg], $$$($$$($$($nesting, 'Source'), 'Map'), 'Collection').$new(nil, nil, arg.$location().$expression()))
+          if (($eqeq(arg.$type(), "arg") && ($truthy(self.$class().$emit_arg_inside_procarg0())))) {
+            return self.$n("procarg0", [arg], $$$($$$($$('Source'), 'Map'), 'Collection').$new(nil, nil, arg.$location().$expression()))
           } else {
             return arg.$updated("procarg0")
           }
         } else {
           return arg
         }
-      }, $Default_procarg0$85.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$arg_expr', $Default_arg_expr$86 = function $$arg_expr(expr) {
+      $def(self, '$arg_expr', function $$arg_expr(expr) {
         var self = this;
 
-        if (expr.$type()['$==']("lvasgn")) {
+        if ($eqeq(expr.$type(), "lvasgn")) {
           return expr.$updated("arg")
         } else {
           return self.$n("arg_expr", [expr], expr.$loc().$dup())
         }
-      }, $Default_arg_expr$86.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$restarg_expr', $Default_restarg_expr$87 = function $$restarg_expr(star_t, expr) {
+      $def(self, '$restarg_expr', function $$restarg_expr(star_t, expr) {
         var self = this;
 
         
         
-        if (expr == null) {
-          expr = nil;
-        };
+        if (expr == null) expr = nil;;
         if ($truthy(expr['$nil?']())) {
           return self.$n0("restarg", self.$token_map(star_t))
-        } else if (expr.$type()['$==']("lvasgn")) {
+        } else if ($eqeq(expr.$type(), "lvasgn")) {
           return expr.$updated("restarg")
         } else {
           return self.$n("restarg_expr", [expr], expr.$loc().$dup())
         };
-      }, $Default_restarg_expr$87.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$blockarg_expr', $Default_blockarg_expr$88 = function $$blockarg_expr(amper_t, expr) {
+      $def(self, '$blockarg_expr', function $$blockarg_expr(amper_t, expr) {
         var self = this;
 
-        if (expr.$type()['$==']("lvasgn")) {
+        if ($eqeq(expr.$type(), "lvasgn")) {
           return expr.$updated("blockarg")
         } else {
           return self.$n("blockarg_expr", [expr], expr.$loc().$dup())
         }
-      }, $Default_blockarg_expr$88.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$objc_kwarg', $Default_objc_kwarg$89 = function $$objc_kwarg(kwname_t, assoc_t, name_t) {
+      $def(self, '$objc_kwarg', function $$objc_kwarg(kwname_t, assoc_t, name_t) {
         var self = this, kwname_l = nil, operator_l = nil;
 
         
@@ -20672,73 +18015,62 @@ Opal.modules["parser/builders/default"] = function(Opal) {
         } else {
           operator_l = self.$loc(assoc_t)
         };
-        return self.$n("objc_kwarg", [self.$value(kwname_t).$to_sym(), self.$value(name_t).$to_sym()], $$$($$$($$($nesting, 'Source'), 'Map'), 'ObjcKwarg').$new(kwname_l, operator_l, self.$loc(name_t), kwname_l.$join(self.$loc(name_t))));
-      }, $Default_objc_kwarg$89.$$arity = 3);
+        return self.$n("objc_kwarg", [self.$value(kwname_t).$to_sym(), self.$value(name_t).$to_sym()], $$$($$$($$('Source'), 'Map'), 'ObjcKwarg').$new(kwname_l, operator_l, self.$loc(name_t), kwname_l.$join(self.$loc(name_t))));
+      }, 3);
       
-      Opal.def(self, '$objc_restarg', $Default_objc_restarg$90 = function $$objc_restarg(star_t, name) {
+      $def(self, '$objc_restarg', function $$objc_restarg(star_t, name) {
         var self = this;
 
         
         
-        if (name == null) {
-          name = nil;
-        };
+        if (name == null) name = nil;;
         if ($truthy(name['$nil?']())) {
           return self.$n0("restarg", self.$arg_prefix_map(star_t))
-        } else if (name.$type()['$==']("arg")) {
+        } else if ($eqeq(name.$type(), "arg")) {
           return name.$updated("restarg", nil, $hash2(["location"], {"location": name.$loc().$with_operator(self.$loc(star_t))}))
         } else {
           return self.$n("objc_restarg", [name], self.$unary_op_map(star_t, name))
         };
-      }, $Default_objc_restarg$90.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$call_type_for_dot', $Default_call_type_for_dot$91 = function $$call_type_for_dot(dot_t) {
-        var self = this, $ret_or_8 = nil;
+      $def(self, '$call_type_for_dot', function $$call_type_for_dot(dot_t) {
+        var self = this;
 
-        if ($truthy((function() {if ($truthy(($ret_or_8 = dot_t['$nil?']()['$!']()))) {
-          return self.$value(dot_t)['$==']("anddot")
-        } else {
-          return $ret_or_8
-        }; return nil; })())) {
+        if (($not(dot_t['$nil?']()) && ($eqeq(self.$value(dot_t), "anddot")))) {
           return "csend"
         } else {
           return "send"
         }
-      }, $Default_call_type_for_dot$91.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$forwarded_args', $Default_forwarded_args$92 = function $$forwarded_args(dots_t) {
+      $def(self, '$forwarded_args', function $$forwarded_args(dots_t) {
         var self = this;
 
         return self.$n("forwarded_args", [], self.$token_map(dots_t))
-      }, $Default_forwarded_args$92.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$call_method', $Default_call_method$93 = function $$call_method(receiver, dot_t, selector_t, lparen_t, args, rparen_t) {
+      $def(self, '$call_method', function $$call_method(receiver, dot_t, selector_t, lparen_t, args, rparen_t) {
         var self = this, type = nil;
 
         
         
-        if (lparen_t == null) {
-          lparen_t = nil;
-        };
+        if (lparen_t == null) lparen_t = nil;;
         
-        if (args == null) {
-          args = [];
-        };
+        if (args == null) args = [];;
         
-        if (rparen_t == null) {
-          rparen_t = nil;
-        };
+        if (rparen_t == null) rparen_t = nil;;
         type = self.$call_type_for_dot(dot_t);
         if ($truthy(self.$class().$emit_kwargs())) {
-          self.$rewrite_hash_args_to_kwargs(args)};
+          self.$rewrite_hash_args_to_kwargs(args)
+        };
         if ($truthy(selector_t['$nil?']())) {
-          return self.$n(type, [receiver, "call"].concat(Opal.to_a(args)), self.$send_map(receiver, dot_t, nil, lparen_t, args, rparen_t))
+          return self.$n(type, [receiver, "call"].concat($to_a(args)), self.$send_map(receiver, dot_t, nil, lparen_t, args, rparen_t))
         } else {
-          return self.$n(type, [receiver, self.$value(selector_t).$to_sym()].concat(Opal.to_a(args)), self.$send_map(receiver, dot_t, selector_t, lparen_t, args, rparen_t))
+          return self.$n(type, [receiver, self.$value(selector_t).$to_sym()].concat($to_a(args)), self.$send_map(receiver, dot_t, selector_t, lparen_t, args, rparen_t))
         };
-      }, $Default_call_method$93.$$arity = -4);
+      }, -4);
       
-      Opal.def(self, '$call_lambda', $Default_call_lambda$94 = function $$call_lambda(lambda_t) {
+      $def(self, '$call_lambda', function $$call_lambda(lambda_t) {
         var self = this;
 
         if ($truthy(self.$class().$emit_lambda())) {
@@ -20746,28 +18078,21 @@ Opal.modules["parser/builders/default"] = function(Opal) {
         } else {
           return self.$n("send", [nil, "lambda"], self.$send_map(nil, nil, lambda_t))
         }
-      }, $Default_call_lambda$94.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$block', $Default_block$95 = function $$block(method_call, begin_t, args, body, end_t) {
-        var $a, self = this, _receiver = nil, _selector = nil, call_args = nil, last_arg = nil, $ret_or_9 = nil, $ret_or_10 = nil, block_type = nil, actual_send = nil, block = nil;
+      $def(self, '$block', function $$block(method_call, begin_t, args, body, end_t) {
+        var $a, self = this, _receiver = nil, _selector = nil, call_args = nil, last_arg = nil, block_type = nil, actual_send = nil, block = nil;
 
         
-        $a = [].concat(Opal.to_a(method_call)), (_receiver = ($a[0] == null ? nil : $a[0])), (_selector = ($a[1] == null ? nil : $a[1])), (call_args = $slice.call($a, 2)), $a;
-        if (method_call.$type()['$==']("yield")) {
-          self.$diagnostic("error", "block_given_to_yield", nil, method_call.$loc().$keyword(), [self.$loc(begin_t)])};
+        $a = [].concat($to_a(method_call)), (_receiver = ($a[0] == null ? nil : $a[0])), (_selector = ($a[1] == null ? nil : $a[1])), (call_args = $slice.call($a, 2)), $a;
+        if ($eqeq(method_call.$type(), "yield")) {
+          self.$diagnostic("error", "block_given_to_yield", nil, method_call.$loc().$keyword(), [self.$loc(begin_t)])
+        };
         last_arg = call_args.$last();
-        if ($truthy((function() {if ($truthy(($ret_or_9 = last_arg))) {
-          
-          if ($truthy(($ret_or_10 = last_arg.$type()['$==']("block_pass")))) {
-            return $ret_or_10
-          } else {
-            return last_arg.$type()['$==']("forwarded_args")
-          };
-        } else {
-          return $ret_or_9
-        }; return nil; })())) {
-          self.$diagnostic("error", "block_and_blockarg", nil, last_arg.$loc().$expression(), [self.$loc(begin_t)])};
-        if (args.$type()['$==']("numargs")) {
+        if (($truthy(last_arg) && (($eqeq(last_arg.$type(), "block_pass") || ($eqeq(last_arg.$type(), "forwarded_args")))))) {
+          self.$diagnostic("error", "block_and_blockarg", nil, last_arg.$loc().$expression(), [self.$loc(begin_t)])
+        };
+        if ($eqeq(args.$type(), "numargs")) {
           
           block_type = "numblock";
           args = args.$children()['$[]'](0);
@@ -20778,125 +18103,123 @@ Opal.modules["parser/builders/default"] = function(Opal) {
           return self.$n(block_type, [method_call, args, body], self.$block_map(method_call.$loc().$expression(), begin_t, end_t))
         } else {
           
-          $a = [].concat(Opal.to_a(method_call)), (actual_send = ($a[0] == null ? nil : $a[0])), $a;
+          $a = [].concat($to_a(method_call)), (actual_send = ($a[0] == null ? nil : $a[0])), $a;
           block = self.$n(block_type, [actual_send, args, body], self.$block_map(actual_send.$loc().$expression(), begin_t, end_t));
           return self.$n(method_call.$type(), [block], method_call.$loc().$with_expression(self.$join_exprs(method_call, block)));
         };
-      }, $Default_block$95.$$arity = 5);
+      }, 5);
       
-      Opal.def(self, '$block_pass', $Default_block_pass$96 = function $$block_pass(amper_t, arg) {
+      $def(self, '$block_pass', function $$block_pass(amper_t, arg) {
         var self = this;
 
         return self.$n("block_pass", [arg], self.$unary_op_map(amper_t, arg))
-      }, $Default_block_pass$96.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$objc_varargs', $Default_objc_varargs$97 = function $$objc_varargs(pair, rest_of_varargs) {
+      $def(self, '$objc_varargs', function $$objc_varargs(pair, rest_of_varargs) {
         var $a, self = this, value = nil, first_vararg = nil, vararg_array = nil;
 
         
-        $a = [].concat(Opal.to_a(pair)), (value = ($a[0] == null ? nil : $a[0])), (first_vararg = ($a[1] == null ? nil : $a[1])), $a;
-        vararg_array = self.$array(nil, [first_vararg].concat(Opal.to_a(rest_of_varargs)), nil).$updated("objc_varargs");
+        $a = [].concat($to_a(pair)), (value = ($a[0] == null ? nil : $a[0])), (first_vararg = ($a[1] == null ? nil : $a[1])), $a;
+        vararg_array = self.$array(nil, [first_vararg].concat($to_a(rest_of_varargs)), nil).$updated("objc_varargs");
         return pair.$updated(nil, [value, vararg_array], $hash2(["location"], {"location": pair.$loc().$with_expression(pair.$loc().$expression().$join(vararg_array.$loc().$expression()))}));
-      }, $Default_objc_varargs$97.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$attr_asgn', $Default_attr_asgn$98 = function $$attr_asgn(receiver, dot_t, selector_t) {
+      $def(self, '$attr_asgn', function $$attr_asgn(receiver, dot_t, selector_t) {
         var self = this, method_name = nil, type = nil;
 
         
         method_name = $rb_plus(self.$value(selector_t), "=").$to_sym();
         type = self.$call_type_for_dot(dot_t);
         return self.$n(type, [receiver, method_name], self.$send_map(receiver, dot_t, selector_t));
-      }, $Default_attr_asgn$98.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$index', $Default_index$99 = function $$index(receiver, lbrack_t, indexes, rbrack_t) {
+      $def(self, '$index', function $$index(receiver, lbrack_t, indexes, rbrack_t) {
         var self = this;
 
         
         if ($truthy(self.$class().$emit_kwargs())) {
-          self.$rewrite_hash_args_to_kwargs(indexes)};
+          self.$rewrite_hash_args_to_kwargs(indexes)
+        };
         if ($truthy(self.$class().$emit_index())) {
-          return self.$n("index", [receiver].concat(Opal.to_a(indexes)), self.$index_map(receiver, lbrack_t, rbrack_t))
+          return self.$n("index", [receiver].concat($to_a(indexes)), self.$index_map(receiver, lbrack_t, rbrack_t))
         } else {
-          return self.$n("send", [receiver, "[]"].concat(Opal.to_a(indexes)), self.$send_index_map(receiver, lbrack_t, rbrack_t))
+          return self.$n("send", [receiver, "[]"].concat($to_a(indexes)), self.$send_index_map(receiver, lbrack_t, rbrack_t))
         };
-      }, $Default_index$99.$$arity = 4);
+      }, 4);
       
-      Opal.def(self, '$index_asgn', $Default_index_asgn$100 = function $$index_asgn(receiver, lbrack_t, indexes, rbrack_t) {
+      $def(self, '$index_asgn', function $$index_asgn(receiver, lbrack_t, indexes, rbrack_t) {
         var self = this;
 
         if ($truthy(self.$class().$emit_index())) {
-          return self.$n("indexasgn", [receiver].concat(Opal.to_a(indexes)), self.$index_map(receiver, lbrack_t, rbrack_t))
+          return self.$n("indexasgn", [receiver].concat($to_a(indexes)), self.$index_map(receiver, lbrack_t, rbrack_t))
         } else {
-          return self.$n("send", [receiver, "[]="].concat(Opal.to_a(indexes)), self.$send_index_map(receiver, lbrack_t, rbrack_t))
+          return self.$n("send", [receiver, "[]="].concat($to_a(indexes)), self.$send_index_map(receiver, lbrack_t, rbrack_t))
         }
-      }, $Default_index_asgn$100.$$arity = 4);
+      }, 4);
       
-      Opal.def(self, '$binary_op', $Default_binary_op$101 = function $$binary_op(receiver, operator_t, arg) {
+      $def(self, '$binary_op', function $$binary_op(receiver, operator_t, arg) {
         var self = this, source_map = nil, operator = nil, method_call = nil;
 
         
         source_map = self.$send_binary_op_map(receiver, operator_t, arg);
-        if (self.parser.$version()['$=='](18)) {
+        if ($eqeq(self.parser.$version(), 18)) {
           
           operator = self.$value(operator_t);
-          if (operator['$==']("!=")) {
+          if ($eqeq(operator, "!=")) {
             method_call = self.$n("send", [receiver, "==", arg], source_map)
-          } else if (operator['$==']("!~")) {
-            method_call = self.$n("send", [receiver, "=~", arg], source_map)};
+          } else if ($eqeq(operator, "!~")) {
+            method_call = self.$n("send", [receiver, "=~", arg], source_map)
+          };
           if ($truthy(["!=", "!~"]['$include?'](operator))) {
-            return self.$n("not", [method_call], self.$expr_map(source_map.$expression()))};};
+            return self.$n("not", [method_call], self.$expr_map(source_map.$expression()))
+          };
+        };
         return self.$n("send", [receiver, self.$value(operator_t).$to_sym(), arg], source_map);
-      }, $Default_binary_op$101.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$match_op', $Default_match_op$102 = function $$match_op(receiver, match_t, arg) {
-        var $$103, self = this, source_map = nil, regexp = nil;
+      $def(self, '$match_op', function $$match_op(receiver, match_t, arg) {
+        var self = this, source_map = nil, regexp = nil;
 
         
         source_map = self.$send_binary_op_map(receiver, match_t, arg);
         if ($truthy((regexp = self.$static_regexp_node(receiver)))) {
           
-          $send(regexp.$names(), 'each', [], ($$103 = function(name){var self = $$103.$$s == null ? this : $$103.$$s;
+          $send(regexp.$names(), 'each', [], function $$11(name){var self = $$11.$$s == null ? this : $$11.$$s;
             if (self.parser == null) self.parser = nil;
 
             
             
-            if (name == null) {
-              name = nil;
-            };
-            return self.parser.$static_env().$declare(name);}, $$103.$$s = self, $$103.$$arity = 1, $$103));
+            if (name == null) name = nil;;
+            return self.parser.$static_env().$declare(name);}, {$$arity: 1, $$s: self});
           return self.$n("match_with_lvasgn", [receiver, arg], source_map);
         } else {
           return self.$n("send", [receiver, "=~", arg], source_map)
         };
-      }, $Default_match_op$102.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$unary_op', $Default_unary_op$104 = function $$unary_op(op_t, receiver) {
-        var self = this, $case = nil, method = nil;
+      $def(self, '$unary_op', function $$unary_op(op_t, receiver) {
+        var self = this, $ret_or_1 = nil, method = nil;
 
         
-        $case = self.$value(op_t);
-        if ("+"['$===']($case) || "-"['$===']($case)) {method = $rb_plus(self.$value(op_t), "@")}
-        else {method = self.$value(op_t)};
+        if (($eqeqeq("+", ($ret_or_1 = self.$value(op_t))) || ($eqeqeq("-", $ret_or_1)))) {
+          method = $rb_plus(self.$value(op_t), "@")
+        } else {
+          method = self.$value(op_t)
+        };
         return self.$n("send", [receiver, method.$to_sym()], self.$send_unary_op_map(op_t, receiver));
-      }, $Default_unary_op$104.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$not_op', $Default_not_op$105 = function $$not_op(not_t, begin_t, receiver, end_t) {
+      $def(self, '$not_op', function $$not_op(not_t, begin_t, receiver, end_t) {
         var self = this, nil_node = nil;
 
         
         
-        if (begin_t == null) {
-          begin_t = nil;
-        };
+        if (begin_t == null) begin_t = nil;;
         
-        if (receiver == null) {
-          receiver = nil;
-        };
+        if (receiver == null) receiver = nil;;
         
-        if (end_t == null) {
-          end_t = nil;
-        };
-        if (self.parser.$version()['$=='](18)) {
+        if (end_t == null) end_t = nil;;
+        if ($eqeq(self.parser.$version(), 18)) {
           return self.$n("not", [self.$check_condition(receiver)], self.$unary_op_map(not_t, receiver))
         } else if ($truthy(receiver['$nil?']())) {
           
@@ -20905,275 +18228,233 @@ Opal.modules["parser/builders/default"] = function(Opal) {
         } else {
           return self.$n("send", [self.$check_condition(receiver), "!"], self.$send_map(nil, nil, not_t, begin_t, [receiver], end_t))
         };
-      }, $Default_not_op$105.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$logical_op', $Default_logical_op$106 = function $$logical_op(type, lhs, op_t, rhs) {
+      $def(self, '$logical_op', function $$logical_op(type, lhs, op_t, rhs) {
         var self = this;
 
         return self.$n(type, [lhs, rhs], self.$binary_op_map(lhs, op_t, rhs))
-      }, $Default_logical_op$106.$$arity = 4);
+      }, 4);
       
-      Opal.def(self, '$condition', $Default_condition$107 = function $$condition(cond_t, cond, then_t, if_true, else_t, if_false, end_t) {
+      $def(self, '$condition', function $$condition(cond_t, cond, then_t, if_true, else_t, if_false, end_t) {
         var self = this;
 
         return self.$n("if", [self.$check_condition(cond), if_true, if_false], self.$condition_map(cond_t, cond, then_t, if_true, else_t, if_false, end_t))
-      }, $Default_condition$107.$$arity = 7);
+      }, 7);
       
-      Opal.def(self, '$condition_mod', $Default_condition_mod$108 = function $$condition_mod(if_true, if_false, cond_t, cond) {
-        var self = this, $ret_or_11 = nil;
+      $def(self, '$condition_mod', function $$condition_mod(if_true, if_false, cond_t, cond) {
+        var self = this, $ret_or_1 = nil;
 
-        return self.$n("if", [self.$check_condition(cond), if_true, if_false], self.$keyword_mod_map((function() {if ($truthy(($ret_or_11 = if_true))) {
-          return $ret_or_11
-        } else {
-          return if_false
-        }; return nil; })(), cond_t, cond))
-      }, $Default_condition_mod$108.$$arity = 4);
+        return self.$n("if", [self.$check_condition(cond), if_true, if_false], self.$keyword_mod_map(($truthy(($ret_or_1 = if_true)) ? ($ret_or_1) : (if_false)), cond_t, cond))
+      }, 4);
       
-      Opal.def(self, '$ternary', $Default_ternary$109 = function $$ternary(cond, question_t, if_true, colon_t, if_false) {
+      $def(self, '$ternary', function $$ternary(cond, question_t, if_true, colon_t, if_false) {
         var self = this;
 
         return self.$n("if", [self.$check_condition(cond), if_true, if_false], self.$ternary_map(cond, question_t, if_true, colon_t, if_false))
-      }, $Default_ternary$109.$$arity = 5);
+      }, 5);
       
-      Opal.def(self, '$when', $Default_when$110 = function $$when(when_t, patterns, then_t, body) {
+      $def(self, '$when', function $$when(when_t, patterns, then_t, body) {
         var self = this, children = nil;
 
         
         children = patterns['$<<'](body);
         return self.$n("when", children, self.$keyword_map(when_t, then_t, children, nil));
-      }, $Default_when$110.$$arity = 4);
+      }, 4);
       
-      Opal.def(self, '$case', $Default_case$111 = function(case_t, expr, when_bodies, else_t, else_body, end_t) {
+      $def(self, '$case', function $Default_case$12(case_t, expr, when_bodies, else_t, else_body, end_t) {
         var self = this;
 
-        return self.$n("case", [expr].concat(Opal.to_a(when_bodies['$<<'](else_body))), self.$condition_map(case_t, expr, nil, nil, else_t, else_body, end_t))
-      }, $Default_case$111.$$arity = 6);
+        return self.$n("case", [expr].concat($to_a(when_bodies['$<<'](else_body))), self.$condition_map(case_t, expr, nil, nil, else_t, else_body, end_t))
+      }, 6);
       
-      Opal.def(self, '$loop', $Default_loop$112 = function $$loop(type, keyword_t, cond, do_t, body, end_t) {
+      $def(self, '$loop', function $$loop(type, keyword_t, cond, do_t, body, end_t) {
         var self = this;
 
         return self.$n(type, [self.$check_condition(cond), body], self.$keyword_map(keyword_t, do_t, nil, end_t))
-      }, $Default_loop$112.$$arity = 6);
+      }, 6);
       
-      Opal.def(self, '$loop_mod', $Default_loop_mod$113 = function $$loop_mod(type, body, keyword_t, cond) {
+      $def(self, '$loop_mod', function $$loop_mod(type, body, keyword_t, cond) {
         var self = this;
 
         
-        if (body.$type()['$==']("kwbegin")) {
-          type = "" + (type) + "_post"};
+        if ($eqeq(body.$type(), "kwbegin")) {
+          type = "" + (type) + "_post"
+        };
         return self.$n(type, [self.$check_condition(cond), body], self.$keyword_mod_map(body, keyword_t, cond));
-      }, $Default_loop_mod$113.$$arity = 4);
+      }, 4);
       
-      Opal.def(self, '$for', $Default_for$114 = function(for_t, iterator, in_t, iteratee, do_t, body, end_t) {
+      $def(self, '$for', function $Default_for$13(for_t, iterator, in_t, iteratee, do_t, body, end_t) {
         var self = this;
 
         return self.$n("for", [iterator, iteratee, body], self.$for_map(for_t, in_t, do_t, end_t))
-      }, $Default_for$114.$$arity = 7);
+      }, 7);
       
-      Opal.def(self, '$keyword_cmd', $Default_keyword_cmd$115 = function $$keyword_cmd(type, keyword_t, lparen_t, args, rparen_t) {
-        var self = this, $ret_or_12 = nil, last_arg = nil, $ret_or_13 = nil;
+      $def(self, '$keyword_cmd', function $$keyword_cmd(type, keyword_t, lparen_t, args, rparen_t) {
+        var self = this, last_arg = nil;
 
         
         
-        if (lparen_t == null) {
-          lparen_t = nil;
-        };
+        if (lparen_t == null) lparen_t = nil;;
         
-        if (args == null) {
-          args = [];
-        };
+        if (args == null) args = [];;
         
-        if (rparen_t == null) {
-          rparen_t = nil;
-        };
-        if ($truthy((function() {if ($truthy(($ret_or_12 = type['$==']("yield")))) {
-          return $rb_gt(args.$count(), 0)
-        } else {
-          return $ret_or_12
-        }; return nil; })())) {
+        if (rparen_t == null) rparen_t = nil;;
+        if (($eqeq(type, "yield") && ($truthy($rb_gt(args.$count(), 0))))) {
           
           last_arg = args.$last();
-          if (last_arg.$type()['$==']("block_pass")) {
-            self.$diagnostic("error", "block_given_to_yield", nil, self.$loc(keyword_t), [last_arg.$loc().$expression()])};};
-        if ($truthy((function() {if ($truthy(($ret_or_13 = ["yield", "super"]['$include?'](type)))) {
-          return self.$class().$emit_kwargs()
-        } else {
-          return $ret_or_13
-        }; return nil; })())) {
-          self.$rewrite_hash_args_to_kwargs(args)};
+          if ($eqeq(last_arg.$type(), "block_pass")) {
+            self.$diagnostic("error", "block_given_to_yield", nil, self.$loc(keyword_t), [last_arg.$loc().$expression()])
+          };
+        };
+        if (($truthy(["yield", "super"]['$include?'](type)) && ($truthy(self.$class().$emit_kwargs())))) {
+          self.$rewrite_hash_args_to_kwargs(args)
+        };
         return self.$n(type, args, self.$keyword_map(keyword_t, lparen_t, args, rparen_t));
-      }, $Default_keyword_cmd$115.$$arity = -3);
+      }, -3);
       
-      Opal.def(self, '$preexe', $Default_preexe$116 = function $$preexe(preexe_t, lbrace_t, compstmt, rbrace_t) {
+      $def(self, '$preexe', function $$preexe(preexe_t, lbrace_t, compstmt, rbrace_t) {
         var self = this;
 
         return self.$n("preexe", [compstmt], self.$keyword_map(preexe_t, lbrace_t, [], rbrace_t))
-      }, $Default_preexe$116.$$arity = 4);
+      }, 4);
       
-      Opal.def(self, '$postexe', $Default_postexe$117 = function $$postexe(postexe_t, lbrace_t, compstmt, rbrace_t) {
+      $def(self, '$postexe', function $$postexe(postexe_t, lbrace_t, compstmt, rbrace_t) {
         var self = this;
 
         return self.$n("postexe", [compstmt], self.$keyword_map(postexe_t, lbrace_t, [], rbrace_t))
-      }, $Default_postexe$117.$$arity = 4);
+      }, 4);
       
-      Opal.def(self, '$rescue_body', $Default_rescue_body$118 = function $$rescue_body(rescue_t, exc_list, assoc_t, exc_var, then_t, compound_stmt) {
+      $def(self, '$rescue_body', function $$rescue_body(rescue_t, exc_list, assoc_t, exc_var, then_t, compound_stmt) {
         var self = this;
 
         return self.$n("resbody", [exc_list, exc_var, compound_stmt], self.$rescue_body_map(rescue_t, exc_list, assoc_t, exc_var, then_t, compound_stmt))
-      }, $Default_rescue_body$118.$$arity = 6);
+      }, 6);
       
-      Opal.def(self, '$begin_body', $Default_begin_body$119 = function $$begin_body(compound_stmt, rescue_bodies, else_t, else_, ensure_t, ensure_) {
+      $def(self, '$begin_body', function $$begin_body(compound_stmt, rescue_bodies, else_t, else_, ensure_t, ensure_) {
         var self = this, statements = nil;
 
         
         
-        if (rescue_bodies == null) {
-          rescue_bodies = [];
-        };
+        if (rescue_bodies == null) rescue_bodies = [];;
         
-        if (else_t == null) {
-          else_t = nil;
-        };
+        if (else_t == null) else_t = nil;;
         
-        if (else_ == null) {
-          else_ = nil;
-        };
+        if (else_ == null) else_ = nil;;
         
-        if (ensure_t == null) {
-          ensure_t = nil;
-        };
+        if (ensure_t == null) ensure_t = nil;;
         
-        if (ensure_ == null) {
-          ensure_ = nil;
-        };
+        if (ensure_ == null) ensure_ = nil;;
         if ($truthy(rescue_bodies['$any?']())) {
           if ($truthy(else_t)) {
-            compound_stmt = self.$n("rescue", [compound_stmt].concat(Opal.to_a($rb_plus(rescue_bodies, [else_]))), self.$eh_keyword_map(compound_stmt, nil, rescue_bodies, else_t, else_))
+            compound_stmt = self.$n("rescue", [compound_stmt].concat($to_a($rb_plus(rescue_bodies, [else_]))), self.$eh_keyword_map(compound_stmt, nil, rescue_bodies, else_t, else_))
           } else {
-            compound_stmt = self.$n("rescue", [compound_stmt].concat(Opal.to_a($rb_plus(rescue_bodies, [nil]))), self.$eh_keyword_map(compound_stmt, nil, rescue_bodies, nil, nil))
+            compound_stmt = self.$n("rescue", [compound_stmt].concat($to_a($rb_plus(rescue_bodies, [nil]))), self.$eh_keyword_map(compound_stmt, nil, rescue_bodies, nil, nil))
           }
         } else if ($truthy(else_t)) {
           
           statements = [];
-          if ($truthy(compound_stmt['$nil?']()['$!']())) {
-            if (compound_stmt.$type()['$==']("begin")) {
+          if ($not(compound_stmt['$nil?']())) {
+            if ($eqeq(compound_stmt.$type(), "begin")) {
               statements = $rb_plus(statements, compound_stmt.$children())
             } else {
               statements.$push(compound_stmt)
-            }};
+            }
+          };
           statements.$push(self.$n("begin", [else_], self.$collection_map(else_t, [else_], nil)));
-          compound_stmt = self.$n("begin", statements, self.$collection_map(nil, statements, nil));};
+          compound_stmt = self.$n("begin", statements, self.$collection_map(nil, statements, nil));
+        };
         if ($truthy(ensure_t)) {
-          compound_stmt = self.$n("ensure", [compound_stmt, ensure_], self.$eh_keyword_map(compound_stmt, ensure_t, [ensure_], nil, nil))};
+          compound_stmt = self.$n("ensure", [compound_stmt, ensure_], self.$eh_keyword_map(compound_stmt, ensure_t, [ensure_], nil, nil))
+        };
         return compound_stmt;
-      }, $Default_begin_body$119.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$compstmt', $Default_compstmt$120 = function $$compstmt(statements) {
+      $def(self, '$compstmt', function $$compstmt(statements) {
         var self = this;
 
-        return (function() {
-        if ($truthy(statements['$none?']())) {return nil}
-        else if ($truthy(statements['$one?']())) {return statements.$first()}
-        else {return self.$n("begin", statements, self.$collection_map(nil, statements, nil))}})()
-      }, $Default_compstmt$120.$$arity = 1);
+        if ($truthy(statements['$none?']())) {
+          return nil
+        } else if ($truthy(statements['$one?']())) {
+          return statements.$first()
+        } else {
+          return self.$n("begin", statements, self.$collection_map(nil, statements, nil))
+        }
+      }, 1);
       
-      Opal.def(self, '$begin', $Default_begin$121 = function $$begin(begin_t, body, end_t) {
-        var self = this, $ret_or_14 = nil, $ret_or_15 = nil, $ret_or_16 = nil;
+      $def(self, '$begin', function $$begin(begin_t, body, end_t) {
+        var self = this;
 
         if ($truthy(body['$nil?']())) {
           return self.$n0("begin", self.$collection_map(begin_t, nil, end_t))
-        } else if ($truthy((function() {if ($truthy(($ret_or_14 = body.$type()['$==']("mlhs")))) {
-          return $ret_or_14
-        } else {
-          
-          if ($truthy(($ret_or_15 = (function() {if ($truthy(($ret_or_16 = body.$type()['$==']("begin")))) {
-            return body.$loc().$begin()['$nil?']()
-          } else {
-            return $ret_or_16
-          }; return nil; })()))) {
-            return body.$loc().$end()['$nil?']()
-          } else {
-            return $ret_or_15
-          };
-        }; return nil; })())) {
+        } else if (($eqeq(body.$type(), "mlhs") || ((($eqeq(body.$type(), "begin") && ($truthy(body.$loc().$begin()['$nil?']()))) && ($truthy(body.$loc().$end()['$nil?']())))))) {
           return self.$n(body.$type(), body.$children(), self.$collection_map(begin_t, body.$children(), end_t))
         } else {
           return self.$n("begin", [body], self.$collection_map(begin_t, [body], end_t))
         }
-      }, $Default_begin$121.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$begin_keyword', $Default_begin_keyword$122 = function $$begin_keyword(begin_t, body, end_t) {
-        var self = this, $ret_or_17 = nil, $ret_or_18 = nil;
+      $def(self, '$begin_keyword', function $$begin_keyword(begin_t, body, end_t) {
+        var self = this;
 
         if ($truthy(body['$nil?']())) {
           return self.$n0("kwbegin", self.$collection_map(begin_t, nil, end_t))
-        } else if ($truthy((function() {if ($truthy(($ret_or_17 = (function() {if ($truthy(($ret_or_18 = body.$type()['$==']("begin")))) {
-          return body.$loc().$begin()['$nil?']()
-        } else {
-          return $ret_or_18
-        }; return nil; })()))) {
-          return body.$loc().$end()['$nil?']()
-        } else {
-          return $ret_or_17
-        }; return nil; })())) {
+        } else if ((($eqeq(body.$type(), "begin") && ($truthy(body.$loc().$begin()['$nil?']()))) && ($truthy(body.$loc().$end()['$nil?']())))) {
           return self.$n("kwbegin", body.$children(), self.$collection_map(begin_t, body.$children(), end_t))
         } else {
           return self.$n("kwbegin", [body], self.$collection_map(begin_t, [body], end_t))
         }
-      }, $Default_begin_keyword$122.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$case_match', $Default_case_match$123 = function $$case_match(case_t, expr, in_bodies, else_t, else_body, end_t) {
-        var self = this, $ret_or_19 = nil;
+      $def(self, '$case_match', function $$case_match(case_t, expr, in_bodies, else_t, else_body, end_t) {
+        var self = this;
 
         
-        if ($truthy((function() {if ($truthy(($ret_or_19 = else_t))) {
-          return else_body['$!']()
-        } else {
-          return $ret_or_19
-        }; return nil; })())) {
-          else_body = self.$n("empty_else", nil, self.$token_map(else_t))};
-        return self.$n("case_match", [expr].concat(Opal.to_a(in_bodies['$<<'](else_body))), self.$condition_map(case_t, expr, nil, nil, else_t, else_body, end_t));
-      }, $Default_case_match$123.$$arity = 6);
+        if (($truthy(else_t) && ($not(else_body)))) {
+          else_body = self.$n("empty_else", nil, self.$token_map(else_t))
+        };
+        return self.$n("case_match", [expr].concat($to_a(in_bodies['$<<'](else_body))), self.$condition_map(case_t, expr, nil, nil, else_t, else_body, end_t));
+      }, 6);
       
-      Opal.def(self, '$in_match', $Default_in_match$124 = function $$in_match(lhs, in_t, rhs) {
+      $def(self, '$in_match', function $$in_match(lhs, in_t, rhs) {
         var self = this;
 
         return self.$n("in_match", [lhs, rhs], self.$binary_op_map(lhs, in_t, rhs))
-      }, $Default_in_match$124.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$match_pattern', $Default_match_pattern$125 = function $$match_pattern(lhs, match_t, rhs) {
+      $def(self, '$match_pattern', function $$match_pattern(lhs, match_t, rhs) {
         var self = this;
 
         return self.$n("match_pattern", [lhs, rhs], self.$binary_op_map(lhs, match_t, rhs))
-      }, $Default_match_pattern$125.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$match_pattern_p', $Default_match_pattern_p$126 = function $$match_pattern_p(lhs, match_t, rhs) {
+      $def(self, '$match_pattern_p', function $$match_pattern_p(lhs, match_t, rhs) {
         var self = this;
 
         return self.$n("match_pattern_p", [lhs, rhs], self.$binary_op_map(lhs, match_t, rhs))
-      }, $Default_match_pattern_p$126.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$in_pattern', $Default_in_pattern$127 = function $$in_pattern(in_t, pattern, guard, then_t, body) {
+      $def(self, '$in_pattern', function $$in_pattern(in_t, pattern, guard, then_t, body) {
         var self = this, children = nil;
 
         
         children = [pattern, guard, body];
         return self.$n("in_pattern", children, self.$keyword_map(in_t, then_t, children.$compact(), nil));
-      }, $Default_in_pattern$127.$$arity = 5);
+      }, 5);
       
-      Opal.def(self, '$if_guard', $Default_if_guard$128 = function $$if_guard(if_t, if_body) {
+      $def(self, '$if_guard', function $$if_guard(if_t, if_body) {
         var self = this;
 
         return self.$n("if_guard", [if_body], self.$guard_map(if_t, if_body))
-      }, $Default_if_guard$128.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$unless_guard', $Default_unless_guard$129 = function $$unless_guard(unless_t, unless_body) {
+      $def(self, '$unless_guard', function $$unless_guard(unless_t, unless_body) {
         var self = this;
 
         return self.$n("unless_guard", [unless_body], self.$guard_map(unless_t, unless_body))
-      }, $Default_unless_guard$129.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$match_var', $Default_match_var$130 = function $$match_var(name_t) {
+      $def(self, '$match_var', function $$match_var(name_t) {
         var self = this, name = nil, name_l = nil;
 
         
@@ -21183,9 +18464,9 @@ Opal.modules["parser/builders/default"] = function(Opal) {
         self.$check_duplicate_pattern_variable(name, name_l);
         self.parser.$static_env().$declare(name);
         return self.$n("match_var", [name], self.$variable_map(name_t));
-      }, $Default_match_var$130.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$match_hash_var', $Default_match_hash_var$131 = function $$match_hash_var(name_t) {
+      $def(self, '$match_hash_var', function $$match_hash_var(name_t) {
         var self = this, name = nil, expr_l = nil, name_l = nil;
 
         
@@ -21195,41 +18476,45 @@ Opal.modules["parser/builders/default"] = function(Opal) {
         self.$check_lvar_name(name, name_l);
         self.$check_duplicate_pattern_variable(name, name_l);
         self.parser.$static_env().$declare(name);
-        return self.$n("match_var", [name], $$$($$$($$($nesting, 'Source'), 'Map'), 'Variable').$new(name_l, expr_l));
-      }, $Default_match_hash_var$131.$$arity = 1);
+        return self.$n("match_var", [name], $$$($$$($$('Source'), 'Map'), 'Variable').$new(name_l, expr_l));
+      }, 1);
       
-      Opal.def(self, '$match_hash_var_from_str', $Default_match_hash_var_from_str$132 = function $$match_hash_var_from_str(begin_t, strings, end_t) {
-        var $a, self = this, string = nil, $case = nil, name = nil, name_l = nil, begin_l = nil, end_l = nil, expr_l = nil;
+      $def(self, '$match_hash_var_from_str', function $$match_hash_var_from_str(begin_t, strings, end_t) {
+        var $a, self = this, string = nil, $ret_or_1 = nil, name = nil, name_l = nil, begin_l = nil, end_l = nil, expr_l = nil;
 
         
         if ($truthy($rb_gt(strings.$length(), 1))) {
-          self.$diagnostic("error", "pm_interp_in_var_name", nil, self.$loc(begin_t).$join(self.$loc(end_t)))};
+          self.$diagnostic("error", "pm_interp_in_var_name", nil, self.$loc(begin_t).$join(self.$loc(end_t)))
+        };
         string = strings['$[]'](0);
-        return (function() {$case = string.$type();
-        if ("str"['$===']($case)) {
-        $a = [].concat(Opal.to_a(string)), (name = ($a[0] == null ? nil : $a[0])), $a;
-        name_l = string.$loc().$expression();
-        self.$check_lvar_name(name, name_l);
-        self.$check_duplicate_pattern_variable(name, name_l);
-        self.parser.$static_env().$declare(name);
-        if ($truthy((begin_l = string.$loc().$begin()))) {
-          name_l = name_l.$adjust($hash2(["begin_pos"], {"begin_pos": begin_l.$length()}))};
-        if ($truthy((end_l = string.$loc().$end()))) {
-          name_l = name_l.$adjust($hash2(["end_pos"], {"end_pos": end_l.$length()['$-@']()}))};
-        expr_l = self.$loc(begin_t).$join(string.$loc().$expression()).$join(self.$loc(end_t));
-        return self.$n("match_var", [name.$to_sym()], $$$($$$($$($nesting, 'Source'), 'Map'), 'Variable').$new(name_l, expr_l));}
-        else if ("begin"['$===']($case)) {return self.$match_hash_var_from_str(begin_t, string.$children(), end_t)}
-        else {return self.$diagnostic("error", "pm_interp_in_var_name", nil, self.$loc(begin_t).$join(self.$loc(end_t)))}})();
-      }, $Default_match_hash_var_from_str$132.$$arity = 3);
-      
-      Opal.def(self, '$match_rest', $Default_match_rest$133 = function $$match_rest(star_t, name_t) {
+        if ($eqeqeq("str", ($ret_or_1 = string.$type()))) {
+          
+          $a = [].concat($to_a(string)), (name = ($a[0] == null ? nil : $a[0])), $a;
+          name_l = string.$loc().$expression();
+          self.$check_lvar_name(name, name_l);
+          self.$check_duplicate_pattern_variable(name, name_l);
+          self.parser.$static_env().$declare(name);
+          if ($truthy((begin_l = string.$loc().$begin()))) {
+            name_l = name_l.$adjust($hash2(["begin_pos"], {"begin_pos": begin_l.$length()}))
+          };
+          if ($truthy((end_l = string.$loc().$end()))) {
+            name_l = name_l.$adjust($hash2(["end_pos"], {"end_pos": end_l.$length()['$-@']()}))
+          };
+          expr_l = self.$loc(begin_t).$join(string.$loc().$expression()).$join(self.$loc(end_t));
+          return self.$n("match_var", [name.$to_sym()], $$$($$$($$('Source'), 'Map'), 'Variable').$new(name_l, expr_l));
+        } else if ($eqeqeq("begin", $ret_or_1)) {
+          return self.$match_hash_var_from_str(begin_t, string.$children(), end_t)
+        } else {
+          return self.$diagnostic("error", "pm_interp_in_var_name", nil, self.$loc(begin_t).$join(self.$loc(end_t)))
+        };
+      }, 3);
+      
+      $def(self, '$match_rest', function $$match_rest(star_t, name_t) {
         var self = this, name = nil;
 
         
         
-        if (name_t == null) {
-          name_t = nil;
-        };
+        if (name_t == null) name_t = nil;;
         if ($truthy(name_t['$nil?']())) {
           return self.$n0("match_rest", self.$unary_op_map(star_t))
         } else {
@@ -21237,31 +18522,29 @@ Opal.modules["parser/builders/default"] = function(Opal) {
           name = self.$match_var(name_t);
           return self.$n("match_rest", [name], self.$unary_op_map(star_t, name));
         };
-      }, $Default_match_rest$133.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$hash_pattern', $Default_hash_pattern$134 = function $$hash_pattern(lbrace_t, kwargs, rbrace_t) {
+      $def(self, '$hash_pattern', function $$hash_pattern(lbrace_t, kwargs, rbrace_t) {
         var self = this, args = nil;
 
         
         args = self.$check_duplicate_args(kwargs);
         return self.$n("hash_pattern", args, self.$collection_map(lbrace_t, args, rbrace_t));
-      }, $Default_hash_pattern$134.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$array_pattern', $Default_array_pattern$135 = function $$array_pattern(lbrack_t, elements, rbrack_t) {
-        var $$136, self = this, trailing_comma = nil, node_elements = nil, node_type = nil;
+      $def(self, '$array_pattern', function $$array_pattern(lbrack_t, elements, rbrack_t) {
+        var self = this, trailing_comma = nil, node_elements = nil, node_type = nil;
 
         
         if ($truthy(elements['$nil?']())) {
-          return self.$n("array_pattern", nil, self.$collection_map(lbrack_t, [], rbrack_t))};
+          return self.$n("array_pattern", nil, self.$collection_map(lbrack_t, [], rbrack_t))
+        };
         trailing_comma = false;
-        node_elements = $send(elements, 'map', [], ($$136 = function(element){var self = $$136.$$s == null ? this : $$136.$$s;
-
+        node_elements = $send(elements, 'map', [], function $$14(element){
           
           
-          if (element == null) {
-            element = nil;
-          };
-          if (element.$type()['$==']("match_with_trailing_comma")) {
+          if (element == null) element = nil;;
+          if ($eqeq(element.$type(), "match_with_trailing_comma")) {
             
             trailing_comma = true;
             return element.$children().$first();
@@ -21269,71 +18552,67 @@ Opal.modules["parser/builders/default"] = function(Opal) {
             
             trailing_comma = false;
             return element;
-          };}, $$136.$$s = self, $$136.$$arity = 1, $$136));
-        node_type = (function() {if ($truthy(trailing_comma)) {
-          return "array_pattern_with_tail"
-        } else {
-          return "array_pattern"
-        }; return nil; })();
+          };}, 1);
+        node_type = ($truthy(trailing_comma) ? ("array_pattern_with_tail") : ("array_pattern"));
         return self.$n(node_type, node_elements, self.$collection_map(lbrack_t, elements, rbrack_t));
-      }, $Default_array_pattern$135.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$find_pattern', $Default_find_pattern$137 = function $$find_pattern(lbrack_t, elements, rbrack_t) {
+      $def(self, '$find_pattern', function $$find_pattern(lbrack_t, elements, rbrack_t) {
         var self = this;
 
         return self.$n("find_pattern", elements, self.$collection_map(lbrack_t, elements, rbrack_t))
-      }, $Default_find_pattern$137.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$match_with_trailing_comma', $Default_match_with_trailing_comma$138 = function $$match_with_trailing_comma(match, comma_t) {
+      $def(self, '$match_with_trailing_comma', function $$match_with_trailing_comma(match, comma_t) {
         var self = this;
 
         return self.$n("match_with_trailing_comma", [match], self.$expr_map(match.$loc().$expression().$join(self.$loc(comma_t))))
-      }, $Default_match_with_trailing_comma$138.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$const_pattern', $Default_const_pattern$139 = function $$const_pattern(const$, ldelim_t, pattern, rdelim_t) {
+      $def(self, '$const_pattern', function $$const_pattern(const$, ldelim_t, pattern, rdelim_t) {
         var self = this;
 
-        return self.$n("const_pattern", [const$, pattern], $$$($$$($$($nesting, 'Source'), 'Map'), 'Collection').$new(self.$loc(ldelim_t), self.$loc(rdelim_t), const$.$loc().$expression().$join(self.$loc(rdelim_t))))
-      }, $Default_const_pattern$139.$$arity = 4);
+        return self.$n("const_pattern", [const$, pattern], $$$($$$($$('Source'), 'Map'), 'Collection').$new(self.$loc(ldelim_t), self.$loc(rdelim_t), const$.$loc().$expression().$join(self.$loc(rdelim_t))))
+      }, 4);
       
-      Opal.def(self, '$pin', $Default_pin$140 = function $$pin(pin_t, var$) {
+      $def(self, '$pin', function $$pin(pin_t, var$) {
         var self = this;
 
         return self.$n("pin", [var$], self.$send_unary_op_map(pin_t, var$))
-      }, $Default_pin$140.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$match_alt', $Default_match_alt$141 = function $$match_alt(left, pipe_t, right) {
+      $def(self, '$match_alt', function $$match_alt(left, pipe_t, right) {
         var self = this, source_map = nil;
 
         
         source_map = self.$binary_op_map(left, pipe_t, right);
         return self.$n("match_alt", [left, right], source_map);
-      }, $Default_match_alt$141.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$match_as', $Default_match_as$142 = function $$match_as(value, assoc_t, as) {
+      $def(self, '$match_as', function $$match_as(value, assoc_t, as) {
         var self = this, source_map = nil;
 
         
         source_map = self.$binary_op_map(value, assoc_t, as);
         return self.$n("match_as", [value, as], source_map);
-      }, $Default_match_as$142.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$match_nil_pattern', $Default_match_nil_pattern$143 = function $$match_nil_pattern(dstar_t, nil_t) {
+      $def(self, '$match_nil_pattern', function $$match_nil_pattern(dstar_t, nil_t) {
         var self = this;
 
         return self.$n0("match_nil_pattern", self.$arg_prefix_map(dstar_t, nil_t))
-      }, $Default_match_nil_pattern$143.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$match_pair', $Default_match_pair$144 = function $$match_pair(label_type, label, value) {
+      $def(self, '$match_pair', function $$match_pair(label_type, label, value) {
         var $a, $b, self = this, begin_t = nil, parts = nil, end_t = nil, label_loc = nil, var_name = nil;
 
-        if (label_type['$==']("label")) {
+        if ($eqeq(label_type, "label")) {
           
           self.$check_duplicate_pattern_key(label['$[]'](0), label['$[]'](1));
           return self.$pair_keyword(label, value);
         } else {
           
-          $b = label, $a = Opal.to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (parts = ($a[1] == null ? nil : $a[1])), (end_t = ($a[2] == null ? nil : $a[2])), $b;
+          $b = label, $a = $to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (parts = ($a[1] == null ? nil : $a[1])), (end_t = ($a[2] == null ? nil : $a[2])), $b;
           label_loc = self.$loc(begin_t).$join(self.$loc(end_t));
           if ($truthy((var_name = self.$static_string(parts)))) {
             self.$check_duplicate_pattern_key(var_name, label_loc)
@@ -21342,188 +18621,172 @@ Opal.modules["parser/builders/default"] = function(Opal) {
           };
           return self.$pair_quoted(begin_t, parts, end_t, value);
         }
-      }, $Default_match_pair$144.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$match_label', $Default_match_label$145 = function $$match_label(label_type, label) {
+      $def(self, '$match_label', function $$match_label(label_type, label) {
         var $a, $b, self = this, begin_t = nil, strings = nil, end_t = nil;
 
-        if (label_type['$==']("label")) {
+        if ($eqeq(label_type, "label")) {
           return self.$match_hash_var(label)
         } else {
           
-          $b = label, $a = Opal.to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (strings = ($a[1] == null ? nil : $a[1])), (end_t = ($a[2] == null ? nil : $a[2])), $b;
+          $b = label, $a = $to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (strings = ($a[1] == null ? nil : $a[1])), (end_t = ($a[2] == null ? nil : $a[2])), $b;
           return self.$match_hash_var_from_str(begin_t, strings, end_t);
         }
-      }, $Default_match_label$145.$$arity = 2);
+      }, 2);
       self.$private();
       
-      Opal.def(self, '$check_condition', $Default_check_condition$146 = function $$check_condition(cond) {
-        var $a, self = this, $case = nil, lhs = nil, rhs = nil, type = nil, $ret_or_20 = nil;
+      $def(self, '$check_condition', function $$check_condition(cond) {
+        var $a, self = this, $ret_or_1 = nil, lhs = nil, rhs = nil, type = nil, $ret_or_2 = nil;
 
-        return (function() {$case = cond.$type();
-        if ("masgn"['$===']($case)) {if ($truthy($rb_le(self.parser.$version(), 23))) {
-          return self.$diagnostic("error", "masgn_as_condition", nil, cond.$loc().$expression())
-        } else {
-          return cond
-        }}
-        else if ("begin"['$===']($case)) {if (cond.$children().$count()['$=='](1)) {
-          return cond.$updated(nil, [self.$check_condition(cond.$children().$last())])
-        } else {
-          return cond
-        }}
-        else if ("and"['$===']($case) || "or"['$===']($case) || "irange"['$===']($case) || "erange"['$===']($case)) {
-        $a = [].concat(Opal.to_a(cond)), (lhs = ($a[0] == null ? nil : $a[0])), (rhs = ($a[1] == null ? nil : $a[1])), $a;
-        type = (function() {$case = cond.$type();
-        if ("irange"['$===']($case)) {return "iflipflop"}
-        else if ("erange"['$===']($case)) {return "eflipflop"}
-        else { return nil }})();
-        if ($truthy((function() {if ($truthy(($ret_or_20 = ["and", "or"]['$include?'](cond.$type())))) {
-          return self.parser.$version()['$=='](18)
+        if ($eqeqeq("masgn", ($ret_or_1 = cond.$type()))) {
+          if ($truthy($rb_le(self.parser.$version(), 23))) {
+            return self.$diagnostic("error", "masgn_as_condition", nil, cond.$loc().$expression())
+          } else {
+            return cond
+          }
+        } else if ($eqeqeq("begin", $ret_or_1)) {
+          if ($eqeq(cond.$children().$count(), 1)) {
+            return cond.$updated(nil, [self.$check_condition(cond.$children().$last())])
+          } else {
+            return cond
+          }
+        } else if (($eqeqeq("and", $ret_or_1) || (($eqeqeq("or", $ret_or_1) || (($eqeqeq("irange", $ret_or_1) || ($eqeqeq("erange", $ret_or_1)))))))) {
+          
+          $a = [].concat($to_a(cond)), (lhs = ($a[0] == null ? nil : $a[0])), (rhs = ($a[1] == null ? nil : $a[1])), $a;
+          type = ($eqeqeq("irange", ($ret_or_2 = cond.$type())) ? ("iflipflop") : ($eqeqeq("erange", $ret_or_2) ? ("eflipflop") : (nil)));
+          if (($truthy(["and", "or"]['$include?'](cond.$type())) && ($eqeq(self.parser.$version(), 18)))) {
+            return cond
+          } else {
+            return cond.$updated(type, [self.$check_condition(lhs), self.$check_condition(rhs)])
+          };
+        } else if ($eqeqeq("regexp", $ret_or_1)) {
+          return self.$n("match_current_line", [cond], self.$expr_map(cond.$loc().$expression()))
         } else {
-          return $ret_or_20
-        }; return nil; })())) {
           return cond
-        } else {
-          return cond.$updated(type, [self.$check_condition(lhs), self.$check_condition(rhs)])
-        };}
-        else if ("regexp"['$===']($case)) {return self.$n("match_current_line", [cond], self.$expr_map(cond.$loc().$expression()))}
-        else {return cond}})()
-      }, $Default_check_condition$146.$$arity = 1);
+        }
+      }, 1);
       
-      Opal.def(self, '$check_duplicate_args', $Default_check_duplicate_args$147 = function $$check_duplicate_args(args, map) {
-        var $$148, self = this;
+      $def(self, '$check_duplicate_args', function $$check_duplicate_args(args, map) {
+        var self = this;
 
         
         
-        if (map == null) {
-          map = $hash2([], {});
-        };
-        return $send(args, 'each', [], ($$148 = function(this_arg){var self = $$148.$$s == null ? this : $$148.$$s, $case = nil;
+        if (map == null) map = $hash2([], {});;
+        return $send(args, 'each', [], function $$15(this_arg){var self = $$15.$$s == null ? this : $$15.$$s, $ret_or_1 = nil;
 
           
           
-          if (this_arg == null) {
-            this_arg = nil;
-          };
-          return (function() {$case = this_arg.$type();
-          if ("arg"['$===']($case) || "optarg"['$===']($case) || "restarg"['$===']($case) || "blockarg"['$===']($case) || "kwarg"['$===']($case) || "kwoptarg"['$===']($case) || "kwrestarg"['$===']($case) || "shadowarg"['$===']($case)) {return self.$check_duplicate_arg(this_arg, map)}
-          else if ("procarg0"['$===']($case)) {if ($truthy(this_arg.$children()['$[]'](0)['$is_a?']($$($nesting, 'Symbol')))) {
+          if (this_arg == null) this_arg = nil;;
+          if (($eqeqeq("arg", ($ret_or_1 = this_arg.$type())) || (($eqeqeq("optarg", $ret_or_1) || (($eqeqeq("restarg", $ret_or_1) || (($eqeqeq("blockarg", $ret_or_1) || (($eqeqeq("kwarg", $ret_or_1) || (($eqeqeq("kwoptarg", $ret_or_1) || (($eqeqeq("kwrestarg", $ret_or_1) || ($eqeqeq("shadowarg", $ret_or_1)))))))))))))))) {
             return self.$check_duplicate_arg(this_arg, map)
-          } else {
+          } else if ($eqeqeq("procarg0", $ret_or_1)) {
+            if ($truthy(this_arg.$children()['$[]'](0)['$is_a?']($$('Symbol')))) {
+              return self.$check_duplicate_arg(this_arg, map)
+            } else {
+              return self.$check_duplicate_args(this_arg.$children(), map)
+            }
+          } else if ($eqeqeq("mlhs", $ret_or_1)) {
             return self.$check_duplicate_args(this_arg.$children(), map)
-          }}
-          else if ("mlhs"['$===']($case)) {return self.$check_duplicate_args(this_arg.$children(), map)}
-          else { return nil }})();}, $$148.$$s = self, $$148.$$arity = 1, $$148));
-      }, $Default_check_duplicate_args$147.$$arity = -2);
+          } else {
+            return nil
+          };}, {$$arity: 1, $$s: self});
+      }, -2);
       
-      Opal.def(self, '$check_duplicate_arg', $Default_check_duplicate_arg$149 = function $$check_duplicate_arg(this_arg, map) {
+      $def(self, '$check_duplicate_arg', function $$check_duplicate_arg(this_arg, map) {
         var $a, self = this, this_name = nil, that_arg = nil, that_name = nil, $writer = nil;
 
         
         
-        if (map == null) {
-          map = $hash2([], {});
-        };
-        $a = [].concat(Opal.to_a(this_arg)), (this_name = ($a[0] == null ? nil : $a[0])), $a;
+        if (map == null) map = $hash2([], {});;
+        $a = [].concat($to_a(this_arg)), (this_name = ($a[0] == null ? nil : $a[0])), $a;
         that_arg = map['$[]'](this_name);
-        $a = [].concat(Opal.to_a(that_arg)), (that_name = ($a[0] == null ? nil : $a[0])), $a;
+        $a = [].concat($to_a(that_arg)), (that_name = ($a[0] == null ? nil : $a[0])), $a;
         if ($truthy(that_arg['$nil?']())) {
           
           $writer = [this_name, this_arg];
-          $send(map, '[]=', Opal.to_a($writer));
+          $send(map, '[]=', $to_a($writer));
           return $writer[$rb_minus($writer["length"], 1)];
         } else if ($truthy(self['$arg_name_collides?'](this_name, that_name))) {
           return self.$diagnostic("error", "duplicate_argument", nil, this_arg.$loc().$name(), [that_arg.$loc().$name()])
         } else {
           return nil
         };
-      }, $Default_check_duplicate_arg$149.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$validate_no_forward_arg_after_restarg', $Default_validate_no_forward_arg_after_restarg$150 = function $$validate_no_forward_arg_after_restarg(args) {
-        var $$151, self = this, restarg = nil, forward_arg = nil, $ret_or_21 = nil;
+      $def(self, '$validate_no_forward_arg_after_restarg', function $$validate_no_forward_arg_after_restarg(args) {
+        var self = this, restarg = nil, forward_arg = nil;
 
         
         restarg = nil;
         forward_arg = nil;
-        $send(args, 'each', [], ($$151 = function(arg){var self = $$151.$$s == null ? this : $$151.$$s, $case = nil;
+        $send(args, 'each', [], function $$16(arg){var $ret_or_1 = nil;
 
           
           
-          if (arg == null) {
-            arg = nil;
-          };
-          return (function() {$case = arg.$type();
-          if ("restarg"['$===']($case)) {return (restarg = arg)}
-          else if ("forward_arg"['$===']($case)) {return (forward_arg = arg)}
-          else { return nil }})();}, $$151.$$s = self, $$151.$$arity = 1, $$151));
-        if ($truthy((function() {if ($truthy(($ret_or_21 = forward_arg['$nil?']()['$!']()))) {
-          return restarg['$nil?']()['$!']()
-        } else {
-          return $ret_or_21
-        }; return nil; })())) {
+          if (arg == null) arg = nil;;
+          if ($eqeqeq("restarg", ($ret_or_1 = arg.$type()))) {
+            return (restarg = arg)
+          } else if ($eqeqeq("forward_arg", $ret_or_1)) {
+            return (forward_arg = arg)
+          } else {
+            return nil
+          };}, 1);
+        if (($not(forward_arg['$nil?']()) && ($not(restarg['$nil?']())))) {
           return self.$diagnostic("error", "forward_arg_after_restarg", nil, forward_arg.$loc().$expression(), [restarg.$loc().$expression()])
         } else {
           return nil
         };
-      }, $Default_validate_no_forward_arg_after_restarg$150.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$check_assignment_to_numparam', $Default_check_assignment_to_numparam$152 = function $$check_assignment_to_numparam(name, loc) {
-        var self = this, assigning_to_numparam = nil, $ret_or_22 = nil, $ret_or_23 = nil;
+      $def(self, '$check_assignment_to_numparam', function $$check_assignment_to_numparam(name, loc) {
+        var self = this, assigning_to_numparam = nil, $ret_or_1 = nil, $ret_or_2 = nil;
 
         
         if ($truthy($rb_lt(self.parser.$version(), 27))) {
-          return nil};
-        assigning_to_numparam = (function() {if ($truthy(($ret_or_22 = (function() {if ($truthy(($ret_or_23 = self.parser.$context()['$in_dynamic_block?']()))) {
-          return name['$=~'](/^_([1-9])$/)
-        } else {
-          return $ret_or_23
-        }; return nil; })()))) {
-          return self.parser.$max_numparam_stack()['$has_numparams?']()
-        } else {
-          return $ret_or_22
-        }; return nil; })();
+          return nil
+        };
+        assigning_to_numparam = ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = self.parser.$context()['$in_dynamic_block?']())) ? (name['$=~'](/^_([1-9])$/)) : ($ret_or_2)))) ? (self.parser.$max_numparam_stack()['$has_numparams?']()) : ($ret_or_1));
         if ($truthy(assigning_to_numparam)) {
           return self.$diagnostic("error", "cant_assign_to_numparam", $hash2(["name"], {"name": name}), loc)
         } else {
           return nil
         };
-      }, $Default_check_assignment_to_numparam$152.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$check_reserved_for_numparam', $Default_check_reserved_for_numparam$153 = function $$check_reserved_for_numparam(name, loc) {
+      $def(self, '$check_reserved_for_numparam', function $$check_reserved_for_numparam(name, loc) {
         var self = this;
 
         
         if ($truthy($rb_lt(self.parser.$version(), 30))) {
-          return nil};
+          return nil
+        };
         if ($truthy(name['$=~'](/^_([1-9])$/))) {
           return self.$diagnostic("error", "reserved_for_numparam", $hash2(["name"], {"name": name}), loc)
         } else {
           return nil
         };
-      }, $Default_check_reserved_for_numparam$153.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$arg_name_collides?', $Default_arg_name_collides$ques$154 = function(this_name, that_name) {
-        var self = this, $case = nil, $ret_or_24 = nil, $ret_or_25 = nil, $ret_or_26 = nil;
+      $def(self, '$arg_name_collides?', function $Default_arg_name_collides$ques$17(this_name, that_name) {
+        var self = this, $ret_or_1 = nil, $ret_or_2 = nil, $ret_or_3 = nil;
 
-        return (function() {$case = self.parser.$version();
-        if ((18)['$===']($case)) {return this_name['$=='](that_name)}
-        else if ((19)['$===']($case)) {if ($truthy(($ret_or_24 = this_name['$!=']("_")))) {
+        if ($eqeqeq(18, ($ret_or_1 = self.parser.$version()))) {
           return this_name['$=='](that_name)
-        } else {
-          return $ret_or_24
-        }}
-        else {if ($truthy(($ret_or_25 = (function() {if ($truthy(($ret_or_26 = this_name))) {
-          return this_name['$[]'](0)['$!=']("_")
-        } else {
-          return $ret_or_26
-        }; return nil; })()))) {
+        } else if ($eqeqeq(19, $ret_or_1)) {
+          if ($truthy(($ret_or_2 = this_name['$!=']("_")))) {
+            return this_name['$=='](that_name)
+          } else {
+            return $ret_or_2
+          }
+        } else if ($truthy(($ret_or_2 = ($truthy(($ret_or_3 = this_name)) ? (this_name['$[]'](0)['$!=']("_")) : ($ret_or_3))))) {
           return this_name['$=='](that_name)
         } else {
-          return $ret_or_25
-        }}})()
-      }, $Default_arg_name_collides$ques$154.$$arity = 2);
+          return $ret_or_2
+        }
+      }, 2);
       
-      Opal.def(self, '$check_lvar_name', $Default_check_lvar_name$155 = function $$check_lvar_name(name, loc) {
+      $def(self, '$check_lvar_name', function $$check_lvar_name(name, loc) {
         var self = this;
 
         if ($truthy(name['$=~'](/^[[[:lower:]]_][[[:alnum:]]_]*$/))) {
@@ -21531,151 +18794,144 @@ Opal.modules["parser/builders/default"] = function(Opal) {
         } else {
           return self.$diagnostic("error", "lvar_name", $hash2(["name"], {"name": name}), loc)
         }
-      }, $Default_check_lvar_name$155.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$check_duplicate_pattern_variable', $Default_check_duplicate_pattern_variable$156 = function $$check_duplicate_pattern_variable(name, loc) {
+      $def(self, '$check_duplicate_pattern_variable', function $$check_duplicate_pattern_variable(name, loc) {
         var self = this;
 
         
         if ($truthy(name.$to_s()['$start_with?']("_"))) {
-          return nil};
+          return nil
+        };
         if ($truthy(self.parser.$pattern_variables()['$declared?'](name))) {
-          self.$diagnostic("error", "duplicate_variable_name", $hash2(["name"], {"name": name.$to_s()}), loc)};
+          self.$diagnostic("error", "duplicate_variable_name", $hash2(["name"], {"name": name.$to_s()}), loc)
+        };
         return self.parser.$pattern_variables().$declare(name);
-      }, $Default_check_duplicate_pattern_variable$156.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$check_duplicate_pattern_key', $Default_check_duplicate_pattern_key$157 = function $$check_duplicate_pattern_key(name, loc) {
+      $def(self, '$check_duplicate_pattern_key', function $$check_duplicate_pattern_key(name, loc) {
         var self = this;
 
         
         if ($truthy(self.parser.$pattern_hash_keys()['$declared?'](name))) {
-          self.$diagnostic("error", "duplicate_pattern_key", $hash2(["name"], {"name": name.$to_s()}), loc)};
+          self.$diagnostic("error", "duplicate_pattern_key", $hash2(["name"], {"name": name.$to_s()}), loc)
+        };
         return self.parser.$pattern_hash_keys().$declare(name);
-      }, $Default_check_duplicate_pattern_key$157.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$n', $Default_n$158 = function $$n(type, children, source_map) {
-        var self = this;
-
-        return $$$($$($nesting, 'AST'), 'Node').$new(type, children, $hash2(["location"], {"location": source_map}))
-      }, $Default_n$158.$$arity = 3);
+      $def(self, '$n', function $$n(type, children, source_map) {
+        
+        return $$$($$('AST'), 'Node').$new(type, children, $hash2(["location"], {"location": source_map}))
+      }, 3);
       
-      Opal.def(self, '$n0', $Default_n0$159 = function $$n0(type, source_map) {
+      $def(self, '$n0', function $$n0(type, source_map) {
         var self = this;
 
         return self.$n(type, [], source_map)
-      }, $Default_n0$159.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$join_exprs', $Default_join_exprs$160 = function $$join_exprs(left_expr, right_expr) {
-        var self = this;
-
+      $def(self, '$join_exprs', function $$join_exprs(left_expr, right_expr) {
+        
         return left_expr.$loc().$expression().$join(right_expr.$loc().$expression())
-      }, $Default_join_exprs$160.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$token_map', $Default_token_map$161 = function $$token_map(token) {
+      $def(self, '$token_map', function $$token_map(token) {
         var self = this;
 
-        return $$$($$($nesting, 'Source'), 'Map').$new(self.$loc(token))
-      }, $Default_token_map$161.$$arity = 1);
+        return $$$($$('Source'), 'Map').$new(self.$loc(token))
+      }, 1);
       
-      Opal.def(self, '$delimited_string_map', $Default_delimited_string_map$162 = function $$delimited_string_map(string_t) {
+      $def(self, '$delimited_string_map', function $$delimited_string_map(string_t) {
         var self = this, str_range = nil, begin_l = nil, end_l = nil;
 
         
         str_range = self.$loc(string_t);
         begin_l = str_range.$with($hash2(["end_pos"], {"end_pos": $rb_plus(str_range.$begin_pos(), 1)}));
         end_l = str_range.$with($hash2(["begin_pos"], {"begin_pos": $rb_minus(str_range.$end_pos(), 1)}));
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Collection').$new(begin_l, end_l, self.$loc(string_t));
-      }, $Default_delimited_string_map$162.$$arity = 1);
+        return $$$($$$($$('Source'), 'Map'), 'Collection').$new(begin_l, end_l, self.$loc(string_t));
+      }, 1);
       
-      Opal.def(self, '$prefix_string_map', $Default_prefix_string_map$163 = function $$prefix_string_map(symbol) {
+      $def(self, '$prefix_string_map', function $$prefix_string_map(symbol) {
         var self = this, str_range = nil, begin_l = nil;
 
         
         str_range = self.$loc(symbol);
         begin_l = str_range.$with($hash2(["end_pos"], {"end_pos": $rb_plus(str_range.$begin_pos(), 1)}));
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Collection').$new(begin_l, nil, self.$loc(symbol));
-      }, $Default_prefix_string_map$163.$$arity = 1);
+        return $$$($$$($$('Source'), 'Map'), 'Collection').$new(begin_l, nil, self.$loc(symbol));
+      }, 1);
       
-      Opal.def(self, '$unquoted_map', $Default_unquoted_map$164 = function $$unquoted_map(token) {
+      $def(self, '$unquoted_map', function $$unquoted_map(token) {
         var self = this;
 
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Collection').$new(nil, nil, self.$loc(token))
-      }, $Default_unquoted_map$164.$$arity = 1);
+        return $$$($$$($$('Source'), 'Map'), 'Collection').$new(nil, nil, self.$loc(token))
+      }, 1);
       
-      Opal.def(self, '$pair_keyword_map', $Default_pair_keyword_map$165 = function $$pair_keyword_map(key_t, value_e) {
+      $def(self, '$pair_keyword_map', function $$pair_keyword_map(key_t, value_e) {
         var self = this, key_range = nil, key_l = nil, colon_l = nil;
 
         
         key_range = self.$loc(key_t);
         key_l = key_range.$adjust($hash2(["end_pos"], {"end_pos": -1}));
         colon_l = key_range.$with($hash2(["begin_pos"], {"begin_pos": $rb_minus(key_range.$end_pos(), 1)}));
-        return [$$$($$$($$($nesting, 'Source'), 'Map'), 'Collection').$new(nil, nil, key_l), $$$($$$($$($nesting, 'Source'), 'Map'), 'Operator').$new(colon_l, key_range.$join(value_e.$loc().$expression()))];
-      }, $Default_pair_keyword_map$165.$$arity = 2);
+        return [$$$($$$($$('Source'), 'Map'), 'Collection').$new(nil, nil, key_l), $$$($$$($$('Source'), 'Map'), 'Operator').$new(colon_l, key_range.$join(value_e.$loc().$expression()))];
+      }, 2);
       
-      Opal.def(self, '$pair_quoted_map', $Default_pair_quoted_map$166 = function $$pair_quoted_map(begin_t, end_t, value_e) {
+      $def(self, '$pair_quoted_map', function $$pair_quoted_map(begin_t, end_t, value_e) {
         var self = this, end_l = nil, quote_l = nil, colon_l = nil;
 
         
         end_l = self.$loc(end_t);
         quote_l = end_l.$with($hash2(["begin_pos", "end_pos"], {"begin_pos": $rb_minus(end_l.$end_pos(), 2), "end_pos": $rb_minus(end_l.$end_pos(), 1)}));
         colon_l = end_l.$with($hash2(["begin_pos"], {"begin_pos": $rb_minus(end_l.$end_pos(), 1)}));
-        return [[self.$value(end_t), quote_l], $$$($$$($$($nesting, 'Source'), 'Map'), 'Operator').$new(colon_l, self.$loc(begin_t).$join(value_e.$loc().$expression()))];
-      }, $Default_pair_quoted_map$166.$$arity = 3);
+        return [[self.$value(end_t), quote_l], $$$($$$($$('Source'), 'Map'), 'Operator').$new(colon_l, self.$loc(begin_t).$join(value_e.$loc().$expression()))];
+      }, 3);
       
-      Opal.def(self, '$expr_map', $Default_expr_map$167 = function $$expr_map(loc) {
-        var self = this;
-
-        return $$$($$($nesting, 'Source'), 'Map').$new(loc)
-      }, $Default_expr_map$167.$$arity = 1);
+      $def(self, '$expr_map', function $$expr_map(loc) {
+        
+        return $$$($$('Source'), 'Map').$new(loc)
+      }, 1);
       
-      Opal.def(self, '$collection_map', $Default_collection_map$168 = function $$collection_map(begin_t, parts, end_t) {
-        var self = this, $ret_or_27 = nil, expr_l = nil;
+      $def(self, '$collection_map', function $$collection_map(begin_t, parts, end_t) {
+        var self = this, expr_l = nil;
 
         
-        if ($truthy((function() {if ($truthy(($ret_or_27 = begin_t['$nil?']()))) {
-          return $ret_or_27
-        } else {
-          return end_t['$nil?']()
-        }; return nil; })())) {
+        if (($truthy(begin_t['$nil?']()) || ($truthy(end_t['$nil?']())))) {
           if ($truthy(parts['$any?']())) {
             expr_l = self.$join_exprs(parts.$first(), parts.$last())
-          } else if ($truthy(begin_t['$nil?']()['$!']())) {
+          } else if ($not(begin_t['$nil?']())) {
             expr_l = self.$loc(begin_t)
-          } else if ($truthy(end_t['$nil?']()['$!']())) {
-            expr_l = self.$loc(end_t)}
+          } else if ($not(end_t['$nil?']())) {
+            expr_l = self.$loc(end_t)
+          }
         } else {
           expr_l = self.$loc(begin_t).$join(self.$loc(end_t))
         };
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Collection').$new(self.$loc(begin_t), self.$loc(end_t), expr_l);
-      }, $Default_collection_map$168.$$arity = 3);
+        return $$$($$$($$('Source'), 'Map'), 'Collection').$new(self.$loc(begin_t), self.$loc(end_t), expr_l);
+      }, 3);
       
-      Opal.def(self, '$string_map', $Default_string_map$169 = function $$string_map(begin_t, parts, end_t) {
-        var self = this, $ret_or_28 = nil, expr_l = nil;
+      $def(self, '$string_map', function $$string_map(begin_t, parts, end_t) {
+        var self = this, expr_l = nil;
 
-        if ($truthy((function() {if ($truthy(($ret_or_28 = begin_t))) {
-          return self.$value(begin_t)['$start_with?']("<<")
-        } else {
-          return $ret_or_28
-        }; return nil; })())) {
+        if (($truthy(begin_t) && ($truthy(self.$value(begin_t)['$start_with?']("<<"))))) {
           
           if ($truthy(parts['$any?']())) {
             expr_l = self.$join_exprs(parts.$first(), parts.$last())
           } else {
             expr_l = self.$loc(end_t).$begin()
           };
-          return $$$($$$($$($nesting, 'Source'), 'Map'), 'Heredoc').$new(self.$loc(begin_t), expr_l, self.$loc(end_t));
+          return $$$($$$($$('Source'), 'Map'), 'Heredoc').$new(self.$loc(begin_t), expr_l, self.$loc(end_t));
         } else {
           return self.$collection_map(begin_t, parts, end_t)
         }
-      }, $Default_string_map$169.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$regexp_map', $Default_regexp_map$170 = function $$regexp_map(begin_t, end_t, options_e) {
+      $def(self, '$regexp_map', function $$regexp_map(begin_t, end_t, options_e) {
         var self = this;
 
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Collection').$new(self.$loc(begin_t), self.$loc(end_t), self.$loc(begin_t).$join(options_e.$loc().$expression()))
-      }, $Default_regexp_map$170.$$arity = 3);
+        return $$$($$$($$('Source'), 'Map'), 'Collection').$new(self.$loc(begin_t), self.$loc(end_t), self.$loc(begin_t).$join(options_e.$loc().$expression()))
+      }, 3);
       
-      Opal.def(self, '$constant_map', $Default_constant_map$171 = function $$constant_map(scope, colon2_t, name_t) {
+      $def(self, '$constant_map', function $$constant_map(scope, colon2_t, name_t) {
         var self = this, expr_l = nil;
 
         
@@ -21684,78 +18940,69 @@ Opal.modules["parser/builders/default"] = function(Opal) {
         } else {
           expr_l = scope.$loc().$expression().$join(self.$loc(name_t))
         };
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Constant').$new(self.$loc(colon2_t), self.$loc(name_t), expr_l);
-      }, $Default_constant_map$171.$$arity = 3);
+        return $$$($$$($$('Source'), 'Map'), 'Constant').$new(self.$loc(colon2_t), self.$loc(name_t), expr_l);
+      }, 3);
       
-      Opal.def(self, '$variable_map', $Default_variable_map$172 = function $$variable_map(name_t) {
+      $def(self, '$variable_map', function $$variable_map(name_t) {
         var self = this;
 
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Variable').$new(self.$loc(name_t))
-      }, $Default_variable_map$172.$$arity = 1);
+        return $$$($$$($$('Source'), 'Map'), 'Variable').$new(self.$loc(name_t))
+      }, 1);
       
-      Opal.def(self, '$binary_op_map', $Default_binary_op_map$173 = function $$binary_op_map(left_e, op_t, right_e) {
+      $def(self, '$binary_op_map', function $$binary_op_map(left_e, op_t, right_e) {
         var self = this;
 
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Operator').$new(self.$loc(op_t), self.$join_exprs(left_e, right_e))
-      }, $Default_binary_op_map$173.$$arity = 3);
+        return $$$($$$($$('Source'), 'Map'), 'Operator').$new(self.$loc(op_t), self.$join_exprs(left_e, right_e))
+      }, 3);
       
-      Opal.def(self, '$unary_op_map', $Default_unary_op_map$174 = function $$unary_op_map(op_t, arg_e) {
+      $def(self, '$unary_op_map', function $$unary_op_map(op_t, arg_e) {
         var self = this, expr_l = nil;
 
         
         
-        if (arg_e == null) {
-          arg_e = nil;
-        };
+        if (arg_e == null) arg_e = nil;;
         if ($truthy(arg_e['$nil?']())) {
           expr_l = self.$loc(op_t)
         } else {
           expr_l = self.$loc(op_t).$join(arg_e.$loc().$expression())
         };
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Operator').$new(self.$loc(op_t), expr_l);
-      }, $Default_unary_op_map$174.$$arity = -2);
+        return $$$($$$($$('Source'), 'Map'), 'Operator').$new(self.$loc(op_t), expr_l);
+      }, -2);
       
-      Opal.def(self, '$range_map', $Default_range_map$175 = function $$range_map(start_e, op_t, end_e) {
-        var self = this, $ret_or_29 = nil, expr_l = nil;
+      $def(self, '$range_map', function $$range_map(start_e, op_t, end_e) {
+        var self = this, expr_l = nil;
 
         
-        if ($truthy((function() {if ($truthy(($ret_or_29 = start_e))) {
-          return end_e
-        } else {
-          return $ret_or_29
-        }; return nil; })())) {
+        if (($truthy(start_e) && ($truthy(end_e)))) {
           expr_l = self.$join_exprs(start_e, end_e)
         } else if ($truthy(start_e)) {
           expr_l = start_e.$loc().$expression().$join(self.$loc(op_t))
         } else if ($truthy(end_e)) {
-          expr_l = self.$loc(op_t).$join(end_e.$loc().$expression())};
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Operator').$new(self.$loc(op_t), expr_l);
-      }, $Default_range_map$175.$$arity = 3);
+          expr_l = self.$loc(op_t).$join(end_e.$loc().$expression())
+        };
+        return $$$($$$($$('Source'), 'Map'), 'Operator').$new(self.$loc(op_t), expr_l);
+      }, 3);
       
-      Opal.def(self, '$arg_prefix_map', $Default_arg_prefix_map$176 = function $$arg_prefix_map(op_t, name_t) {
+      $def(self, '$arg_prefix_map', function $$arg_prefix_map(op_t, name_t) {
         var self = this, expr_l = nil;
 
         
         
-        if (name_t == null) {
-          name_t = nil;
-        };
+        if (name_t == null) name_t = nil;;
         if ($truthy(name_t['$nil?']())) {
           expr_l = self.$loc(op_t)
         } else {
           expr_l = self.$loc(op_t).$join(self.$loc(name_t))
         };
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Variable').$new(self.$loc(name_t), expr_l);
-      }, $Default_arg_prefix_map$176.$$arity = -2);
+        return $$$($$$($$('Source'), 'Map'), 'Variable').$new(self.$loc(name_t), expr_l);
+      }, -2);
       
-      Opal.def(self, '$kwarg_map', $Default_kwarg_map$177 = function $$kwarg_map(name_t, value_e) {
+      $def(self, '$kwarg_map', function $$kwarg_map(name_t, value_e) {
         var self = this, label_range = nil, name_range = nil, expr_l = nil;
 
         
         
-        if (value_e == null) {
-          value_e = nil;
-        };
+        if (value_e == null) value_e = nil;;
         label_range = self.$loc(name_t);
         name_range = label_range.$adjust($hash2(["end_pos"], {"end_pos": -1}));
         if ($truthy(value_e)) {
@@ -21763,74 +19010,70 @@ Opal.modules["parser/builders/default"] = function(Opal) {
         } else {
           expr_l = self.$loc(name_t)
         };
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Variable').$new(name_range, expr_l);
-      }, $Default_kwarg_map$177.$$arity = -2);
+        return $$$($$$($$('Source'), 'Map'), 'Variable').$new(name_range, expr_l);
+      }, -2);
       
-      Opal.def(self, '$module_definition_map', $Default_module_definition_map$178 = function $$module_definition_map(keyword_t, name_e, operator_t, end_t) {
+      $def(self, '$module_definition_map', function $$module_definition_map(keyword_t, name_e, operator_t, end_t) {
         var self = this, name_l = nil;
 
         
         if ($truthy(name_e)) {
-          name_l = name_e.$loc().$expression()};
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Definition').$new(self.$loc(keyword_t), self.$loc(operator_t), name_l, self.$loc(end_t));
-      }, $Default_module_definition_map$178.$$arity = 4);
+          name_l = name_e.$loc().$expression()
+        };
+        return $$$($$$($$('Source'), 'Map'), 'Definition').$new(self.$loc(keyword_t), self.$loc(operator_t), name_l, self.$loc(end_t));
+      }, 4);
       
-      Opal.def(self, '$definition_map', $Default_definition_map$179 = function $$definition_map(keyword_t, operator_t, name_t, end_t) {
+      $def(self, '$definition_map', function $$definition_map(keyword_t, operator_t, name_t, end_t) {
         var self = this;
 
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'MethodDefinition').$new(self.$loc(keyword_t), self.$loc(operator_t), self.$loc(name_t), self.$loc(end_t), nil, nil)
-      }, $Default_definition_map$179.$$arity = 4);
+        return $$$($$$($$('Source'), 'Map'), 'MethodDefinition').$new(self.$loc(keyword_t), self.$loc(operator_t), self.$loc(name_t), self.$loc(end_t), nil, nil)
+      }, 4);
       
-      Opal.def(self, '$endless_definition_map', $Default_endless_definition_map$180 = function $$endless_definition_map(keyword_t, operator_t, name_t, assignment_t, body_e) {
+      $def(self, '$endless_definition_map', function $$endless_definition_map(keyword_t, operator_t, name_t, assignment_t, body_e) {
         var self = this, body_l = nil;
 
         
         body_l = body_e.$loc().$expression();
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'MethodDefinition').$new(self.$loc(keyword_t), self.$loc(operator_t), self.$loc(name_t), nil, self.$loc(assignment_t), body_l);
-      }, $Default_endless_definition_map$180.$$arity = 5);
+        return $$$($$$($$('Source'), 'Map'), 'MethodDefinition').$new(self.$loc(keyword_t), self.$loc(operator_t), self.$loc(name_t), nil, self.$loc(assignment_t), body_l);
+      }, 5);
       
-      Opal.def(self, '$send_map', $Default_send_map$181 = function $$send_map(receiver_e, dot_t, selector_t, begin_t, args, end_t) {
+      $def(self, '$send_map', function $$send_map(receiver_e, dot_t, selector_t, begin_t, args, end_t) {
         var self = this, begin_l = nil, end_l = nil;
 
         
         
-        if (begin_t == null) {
-          begin_t = nil;
-        };
+        if (begin_t == null) begin_t = nil;;
         
-        if (args == null) {
-          args = [];
-        };
+        if (args == null) args = [];;
         
-        if (end_t == null) {
-          end_t = nil;
-        };
+        if (end_t == null) end_t = nil;;
         if ($truthy(receiver_e)) {
           begin_l = receiver_e.$loc().$expression()
         } else if ($truthy(selector_t)) {
-          begin_l = self.$loc(selector_t)};
+          begin_l = self.$loc(selector_t)
+        };
         if ($truthy(end_t)) {
           end_l = self.$loc(end_t)
         } else if ($truthy(args['$any?']())) {
           end_l = args.$last().$loc().$expression()
         } else if ($truthy(selector_t)) {
-          end_l = self.$loc(selector_t)};
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Send').$new(self.$loc(dot_t), self.$loc(selector_t), self.$loc(begin_t), self.$loc(end_t), begin_l.$join(end_l));
-      }, $Default_send_map$181.$$arity = -4);
+          end_l = self.$loc(selector_t)
+        };
+        return $$$($$$($$('Source'), 'Map'), 'Send').$new(self.$loc(dot_t), self.$loc(selector_t), self.$loc(begin_t), self.$loc(end_t), begin_l.$join(end_l));
+      }, -4);
       
-      Opal.def(self, '$var_send_map', $Default_var_send_map$182 = function $$var_send_map(variable_e) {
-        var self = this;
-
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Send').$new(nil, variable_e.$loc().$expression(), nil, nil, variable_e.$loc().$expression())
-      }, $Default_var_send_map$182.$$arity = 1);
+      $def(self, '$var_send_map', function $$var_send_map(variable_e) {
+        
+        return $$$($$$($$('Source'), 'Map'), 'Send').$new(nil, variable_e.$loc().$expression(), nil, nil, variable_e.$loc().$expression())
+      }, 1);
       
-      Opal.def(self, '$send_binary_op_map', $Default_send_binary_op_map$183 = function $$send_binary_op_map(lhs_e, selector_t, rhs_e) {
+      $def(self, '$send_binary_op_map', function $$send_binary_op_map(lhs_e, selector_t, rhs_e) {
         var self = this;
 
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Send').$new(nil, self.$loc(selector_t), nil, nil, self.$join_exprs(lhs_e, rhs_e))
-      }, $Default_send_binary_op_map$183.$$arity = 3);
+        return $$$($$$($$('Source'), 'Map'), 'Send').$new(nil, self.$loc(selector_t), nil, nil, self.$join_exprs(lhs_e, rhs_e))
+      }, 3);
       
-      Opal.def(self, '$send_unary_op_map', $Default_send_unary_op_map$184 = function $$send_unary_op_map(selector_t, arg_e) {
+      $def(self, '$send_unary_op_map', function $$send_unary_op_map(selector_t, arg_e) {
         var self = this, expr_l = nil;
 
         
@@ -21839,132 +19082,105 @@ Opal.modules["parser/builders/default"] = function(Opal) {
         } else {
           expr_l = self.$loc(selector_t).$join(arg_e.$loc().$expression())
         };
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Send').$new(nil, self.$loc(selector_t), nil, nil, expr_l);
-      }, $Default_send_unary_op_map$184.$$arity = 2);
+        return $$$($$$($$('Source'), 'Map'), 'Send').$new(nil, self.$loc(selector_t), nil, nil, expr_l);
+      }, 2);
       
-      Opal.def(self, '$index_map', $Default_index_map$185 = function $$index_map(receiver_e, lbrack_t, rbrack_t) {
+      $def(self, '$index_map', function $$index_map(receiver_e, lbrack_t, rbrack_t) {
         var self = this;
 
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Index').$new(self.$loc(lbrack_t), self.$loc(rbrack_t), receiver_e.$loc().$expression().$join(self.$loc(rbrack_t)))
-      }, $Default_index_map$185.$$arity = 3);
+        return $$$($$$($$('Source'), 'Map'), 'Index').$new(self.$loc(lbrack_t), self.$loc(rbrack_t), receiver_e.$loc().$expression().$join(self.$loc(rbrack_t)))
+      }, 3);
       
-      Opal.def(self, '$send_index_map', $Default_send_index_map$186 = function $$send_index_map(receiver_e, lbrack_t, rbrack_t) {
+      $def(self, '$send_index_map', function $$send_index_map(receiver_e, lbrack_t, rbrack_t) {
         var self = this;
 
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Send').$new(nil, self.$loc(lbrack_t).$join(self.$loc(rbrack_t)), nil, nil, receiver_e.$loc().$expression().$join(self.$loc(rbrack_t)))
-      }, $Default_send_index_map$186.$$arity = 3);
+        return $$$($$$($$('Source'), 'Map'), 'Send').$new(nil, self.$loc(lbrack_t).$join(self.$loc(rbrack_t)), nil, nil, receiver_e.$loc().$expression().$join(self.$loc(rbrack_t)))
+      }, 3);
       
-      Opal.def(self, '$block_map', $Default_block_map$187 = function $$block_map(receiver_l, begin_t, end_t) {
+      $def(self, '$block_map', function $$block_map(receiver_l, begin_t, end_t) {
         var self = this;
 
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Collection').$new(self.$loc(begin_t), self.$loc(end_t), receiver_l.$join(self.$loc(end_t)))
-      }, $Default_block_map$187.$$arity = 3);
+        return $$$($$$($$('Source'), 'Map'), 'Collection').$new(self.$loc(begin_t), self.$loc(end_t), receiver_l.$join(self.$loc(end_t)))
+      }, 3);
       
-      Opal.def(self, '$keyword_map', $Default_keyword_map$188 = function $$keyword_map(keyword_t, begin_t, args, end_t) {
-        var self = this, $ret_or_30 = nil, end_l = nil, $ret_or_31 = nil, $ret_or_32 = nil;
+      $def(self, '$keyword_map', function $$keyword_map(keyword_t, begin_t, args, end_t) {
+        var self = this, $ret_or_1 = nil, end_l = nil;
 
         
-        args = (function() {if ($truthy(($ret_or_30 = args))) {
-          return $ret_or_30
-        } else {
-          return []
-        }; return nil; })();
+        args = ($truthy(($ret_or_1 = args)) ? ($ret_or_1) : ([]));
         if ($truthy(end_t)) {
           end_l = self.$loc(end_t)
-        } else if ($truthy((function() {if ($truthy(($ret_or_31 = args['$any?']()))) {
-          return args.$last()['$nil?']()['$!']()
-        } else {
-          return $ret_or_31
-        }; return nil; })())) {
+        } else if (($truthy(args['$any?']()) && ($not(args.$last()['$nil?']())))) {
           end_l = args.$last().$loc().$expression()
-        } else if ($truthy((function() {if ($truthy(($ret_or_32 = args['$any?']()))) {
-          return $rb_gt(args.$count(), 1)
-        } else {
-          return $ret_or_32
-        }; return nil; })())) {
+        } else if (($truthy(args['$any?']()) && ($truthy($rb_gt(args.$count(), 1))))) {
           end_l = args['$[]'](-2).$loc().$expression()
         } else {
           end_l = self.$loc(keyword_t)
         };
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Keyword').$new(self.$loc(keyword_t), self.$loc(begin_t), self.$loc(end_t), self.$loc(keyword_t).$join(end_l));
-      }, $Default_keyword_map$188.$$arity = 4);
+        return $$$($$$($$('Source'), 'Map'), 'Keyword').$new(self.$loc(keyword_t), self.$loc(begin_t), self.$loc(end_t), self.$loc(keyword_t).$join(end_l));
+      }, 4);
       
-      Opal.def(self, '$keyword_mod_map', $Default_keyword_mod_map$189 = function $$keyword_mod_map(pre_e, keyword_t, post_e) {
+      $def(self, '$keyword_mod_map', function $$keyword_mod_map(pre_e, keyword_t, post_e) {
         var self = this;
 
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Keyword').$new(self.$loc(keyword_t), nil, nil, self.$join_exprs(pre_e, post_e))
-      }, $Default_keyword_mod_map$189.$$arity = 3);
+        return $$$($$$($$('Source'), 'Map'), 'Keyword').$new(self.$loc(keyword_t), nil, nil, self.$join_exprs(pre_e, post_e))
+      }, 3);
       
-      Opal.def(self, '$condition_map', $Default_condition_map$190 = function $$condition_map(keyword_t, cond_e, begin_t, body_e, else_t, else_e, end_t) {
-        var self = this, end_l = nil, $ret_or_33 = nil, $ret_or_34 = nil;
+      $def(self, '$condition_map', function $$condition_map(keyword_t, cond_e, begin_t, body_e, else_t, else_e, end_t) {
+        var self = this, end_l = nil;
 
         
         if ($truthy(end_t)) {
           end_l = self.$loc(end_t)
-        } else if ($truthy((function() {if ($truthy(($ret_or_33 = else_e))) {
-          return else_e.$loc().$expression()
-        } else {
-          return $ret_or_33
-        }; return nil; })())) {
+        } else if (($truthy(else_e) && ($truthy(else_e.$loc().$expression())))) {
           end_l = else_e.$loc().$expression()
         } else if ($truthy(self.$loc(else_t))) {
           end_l = self.$loc(else_t)
-        } else if ($truthy((function() {if ($truthy(($ret_or_34 = body_e))) {
-          return body_e.$loc().$expression()
-        } else {
-          return $ret_or_34
-        }; return nil; })())) {
+        } else if (($truthy(body_e) && ($truthy(body_e.$loc().$expression())))) {
           end_l = body_e.$loc().$expression()
         } else if ($truthy(self.$loc(begin_t))) {
           end_l = self.$loc(begin_t)
         } else {
           end_l = cond_e.$loc().$expression()
         };
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Condition').$new(self.$loc(keyword_t), self.$loc(begin_t), self.$loc(else_t), self.$loc(end_t), self.$loc(keyword_t).$join(end_l));
-      }, $Default_condition_map$190.$$arity = 7);
+        return $$$($$$($$('Source'), 'Map'), 'Condition').$new(self.$loc(keyword_t), self.$loc(begin_t), self.$loc(else_t), self.$loc(end_t), self.$loc(keyword_t).$join(end_l));
+      }, 7);
       
-      Opal.def(self, '$ternary_map', $Default_ternary_map$191 = function $$ternary_map(begin_e, question_t, mid_e, colon_t, end_e) {
+      $def(self, '$ternary_map', function $$ternary_map(begin_e, question_t, mid_e, colon_t, end_e) {
         var self = this;
 
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Ternary').$new(self.$loc(question_t), self.$loc(colon_t), self.$join_exprs(begin_e, end_e))
-      }, $Default_ternary_map$191.$$arity = 5);
+        return $$$($$$($$('Source'), 'Map'), 'Ternary').$new(self.$loc(question_t), self.$loc(colon_t), self.$join_exprs(begin_e, end_e))
+      }, 5);
       
-      Opal.def(self, '$for_map', $Default_for_map$192 = function $$for_map(keyword_t, in_t, begin_t, end_t) {
+      $def(self, '$for_map', function $$for_map(keyword_t, in_t, begin_t, end_t) {
         var self = this;
 
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'For').$new(self.$loc(keyword_t), self.$loc(in_t), self.$loc(begin_t), self.$loc(end_t), self.$loc(keyword_t).$join(self.$loc(end_t)))
-      }, $Default_for_map$192.$$arity = 4);
+        return $$$($$$($$('Source'), 'Map'), 'For').$new(self.$loc(keyword_t), self.$loc(in_t), self.$loc(begin_t), self.$loc(end_t), self.$loc(keyword_t).$join(self.$loc(end_t)))
+      }, 4);
       
-      Opal.def(self, '$rescue_body_map', $Default_rescue_body_map$193 = function $$rescue_body_map(keyword_t, exc_list_e, assoc_t, exc_var_e, then_t, compstmt_e) {
-        var self = this, end_l = nil, $ret_or_35 = nil, $ret_or_36 = nil, $ret_or_37 = nil;
+      $def(self, '$rescue_body_map', function $$rescue_body_map(keyword_t, exc_list_e, assoc_t, exc_var_e, then_t, compstmt_e) {
+        var self = this, end_l = nil;
 
         
         if ($truthy(compstmt_e)) {
-          end_l = compstmt_e.$loc().$expression()};
-        if ($truthy((function() {if ($truthy(($ret_or_35 = end_l['$nil?']()))) {
-          return then_t
-        } else {
-          return $ret_or_35
-        }; return nil; })())) {
-          end_l = self.$loc(then_t)};
-        if ($truthy((function() {if ($truthy(($ret_or_36 = end_l['$nil?']()))) {
-          return exc_var_e
-        } else {
-          return $ret_or_36
-        }; return nil; })())) {
-          end_l = exc_var_e.$loc().$expression()};
-        if ($truthy((function() {if ($truthy(($ret_or_37 = end_l['$nil?']()))) {
-          return exc_list_e
-        } else {
-          return $ret_or_37
-        }; return nil; })())) {
-          end_l = exc_list_e.$loc().$expression()};
+          end_l = compstmt_e.$loc().$expression()
+        };
+        if (($truthy(end_l['$nil?']()) && ($truthy(then_t)))) {
+          end_l = self.$loc(then_t)
+        };
+        if (($truthy(end_l['$nil?']()) && ($truthy(exc_var_e)))) {
+          end_l = exc_var_e.$loc().$expression()
+        };
+        if (($truthy(end_l['$nil?']()) && ($truthy(exc_list_e)))) {
+          end_l = exc_list_e.$loc().$expression()
+        };
         if ($truthy(end_l['$nil?']())) {
-          end_l = self.$loc(keyword_t)};
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'RescueBody').$new(self.$loc(keyword_t), self.$loc(assoc_t), self.$loc(then_t), self.$loc(keyword_t).$join(end_l));
-      }, $Default_rescue_body_map$193.$$arity = 6);
+          end_l = self.$loc(keyword_t)
+        };
+        return $$$($$$($$('Source'), 'Map'), 'RescueBody').$new(self.$loc(keyword_t), self.$loc(assoc_t), self.$loc(then_t), self.$loc(keyword_t).$join(end_l));
+      }, 6);
       
-      Opal.def(self, '$eh_keyword_map', $Default_eh_keyword_map$194 = function $$eh_keyword_map(compstmt_e, keyword_t, body_es, else_t, else_e) {
+      $def(self, '$eh_keyword_map', function $$eh_keyword_map(compstmt_e, keyword_t, body_es, else_t, else_e) {
         var self = this, begin_l = nil, end_l = nil;
 
         
@@ -21983,195 +19199,164 @@ Opal.modules["parser/builders/default"] = function(Opal) {
           } else {
             end_l = else_e.$loc().$expression()
           }
-        } else if ($truthy(body_es.$last()['$nil?']()['$!']())) {
+        } else if ($not(body_es.$last()['$nil?']())) {
           end_l = body_es.$last().$loc().$expression()
         } else {
           end_l = self.$loc(keyword_t)
         };
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Condition').$new(self.$loc(keyword_t), nil, self.$loc(else_t), nil, begin_l.$join(end_l));
-      }, $Default_eh_keyword_map$194.$$arity = 5);
+        return $$$($$$($$('Source'), 'Map'), 'Condition').$new(self.$loc(keyword_t), nil, self.$loc(else_t), nil, begin_l.$join(end_l));
+      }, 5);
       
-      Opal.def(self, '$guard_map', $Default_guard_map$195 = function $$guard_map(keyword_t, guard_body_e) {
+      $def(self, '$guard_map', function $$guard_map(keyword_t, guard_body_e) {
         var self = this, keyword_l = nil, guard_body_l = nil;
 
         
         keyword_l = self.$loc(keyword_t);
         guard_body_l = guard_body_e.$loc().$expression();
-        return $$$($$$($$($nesting, 'Source'), 'Map'), 'Keyword').$new(keyword_l, nil, nil, keyword_l.$join(guard_body_l));
-      }, $Default_guard_map$195.$$arity = 2);
+        return $$$($$$($$('Source'), 'Map'), 'Keyword').$new(keyword_l, nil, nil, keyword_l.$join(guard_body_l));
+      }, 2);
       
-      Opal.def(self, '$static_string', $Default_static_string$196 = function $$static_string(nodes) {try {
+      $def(self, '$static_string', function $$static_string(nodes) {try {
 
-        var $$197, self = this;
+        var self = this;
 
-        return $send(nodes, 'map', [], ($$197 = function(node){var self = $$197.$$s == null ? this : $$197.$$s, $case = nil, string = nil;
+        return $send(nodes, 'map', [], function $$18(node){var self = $$18.$$s == null ? this : $$18.$$s, $ret_or_1 = nil, string = nil;
 
           
           
-          if (node == null) {
-            node = nil;
-          };
-          return (function() {$case = node.$type();
-          if ("str"['$===']($case)) {return node.$children()['$[]'](0)}
-          else if ("begin"['$===']($case)) {if ($truthy((string = self.$static_string(node.$children())))) {
-            return string
+          if (node == null) node = nil;;
+          if ($eqeqeq("str", ($ret_or_1 = node.$type()))) {
+            return node.$children()['$[]'](0)
+          } else if ($eqeqeq("begin", $ret_or_1)) {
+            if ($truthy((string = self.$static_string(node.$children())))) {
+              return string
+            } else {
+              Opal.ret(nil)
+            }
           } else {
             Opal.ret(nil)
-          }}
-          else {Opal.ret(nil)}})();}, $$197.$$s = self, $$197.$$arity = 1, $$197)).$join()
+          };}, {$$arity: 1, $$s: self}).$join()
         } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
-      }, $Default_static_string$196.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$static_regexp', $Default_static_regexp$198 = function $$static_regexp(parts, options) {
+      $def(self, '$static_regexp', function $$static_regexp(parts, options) {
         var self = this, source = nil;
 
         
         source = self.$static_string(parts);
         if ($truthy(source['$nil?']())) {
-          return nil};
-        source = (function() {
-        if ($truthy(options.$children()['$include?']("u"))) {return source.$encode($$$($$($nesting, 'Encoding'), 'UTF_8'))}
-        else if ($truthy(options.$children()['$include?']("e"))) {return source.$encode($$$($$($nesting, 'Encoding'), 'EUC_JP'))}
-        else if ($truthy(options.$children()['$include?']("s"))) {return source.$encode($$$($$($nesting, 'Encoding'), 'WINDOWS_31J'))}
-        else if ($truthy(options.$children()['$include?']("n"))) {return source.$encode($$$($$($nesting, 'Encoding'), 'BINARY'))}
-        else {return source}})();
-        return $$($nesting, 'Regexp').$new(source, (function() {if ($truthy(options.$children()['$include?']("x"))) {
-          return $$$($$($nesting, 'Regexp'), 'EXTENDED')
-        } else {
           return nil
-        }; return nil; })());
-      }, $Default_static_regexp$198.$$arity = 2);
+        };
+        source = ($truthy(options.$children()['$include?']("u")) ? (source.$encode($$$($$('Encoding'), 'UTF_8'))) : ($truthy(options.$children()['$include?']("e")) ? (source.$encode($$$($$('Encoding'), 'EUC_JP'))) : ($truthy(options.$children()['$include?']("s")) ? (source.$encode($$$($$('Encoding'), 'WINDOWS_31J'))) : ($truthy(options.$children()['$include?']("n")) ? (source.$encode($$$($$('Encoding'), 'BINARY'))) : (source)))));
+        return $$('Regexp').$new(source, ($truthy(options.$children()['$include?']("x")) ? ($$$($$('Regexp'), 'EXTENDED')) : nil));
+      }, 2);
       
-      Opal.def(self, '$static_regexp_node', $Default_static_regexp_node$199 = function $$static_regexp_node(node) {
+      $def(self, '$static_regexp_node', function $$static_regexp_node(node) {
         var $a, self = this, parts = nil, options = nil;
 
-        if (node.$type()['$==']("regexp")) {
+        if ($eqeq(node.$type(), "regexp")) {
           
           $a = [node.$children()['$[]']($range(0, -2, false)), node.$children()['$[]'](-1)], (parts = $a[0]), (options = $a[1]), $a;
           return self.$static_regexp(parts, options);
         } else {
           return nil
         }
-      }, $Default_static_regexp_node$199.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$collapse_string_parts?', $Default_collapse_string_parts$ques$200 = function(parts) {
-        var self = this, $ret_or_38 = nil;
+      $def(self, '$collapse_string_parts?', function $Default_collapse_string_parts$ques$19(parts) {
+        var $ret_or_1 = nil;
 
-        if ($truthy(($ret_or_38 = parts['$one?']()))) {
+        if ($truthy(($ret_or_1 = parts['$one?']()))) {
           return ["str", "dstr"]['$include?'](parts.$first().$type())
         } else {
-          return $ret_or_38
+          return $ret_or_1
         }
-      }, $Default_collapse_string_parts$ques$200.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$value', $Default_value$201 = function $$value(token) {
-        var self = this;
-
+      $def(self, '$value', function $$value(token) {
+        
         return token['$[]'](0)
-      }, $Default_value$201.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$string_value', $Default_string_value$202 = function $$string_value(token) {
+      $def(self, '$string_value', function $$string_value(token) {
         var self = this;
 
         
-        if ($truthy(token['$[]'](0)['$valid_encoding?']())) {
-        } else {
+        if (!$truthy(token['$[]'](0)['$valid_encoding?']())) {
           self.$diagnostic("error", "invalid_encoding", nil, token['$[]'](1))
         };
         return token['$[]'](0);
-      }, $Default_string_value$202.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$loc', $Default_loc$203 = function $$loc(token) {
-        var self = this, $ret_or_39 = nil;
-
-        if ($truthy((function() {if ($truthy(($ret_or_39 = token))) {
-          return token['$[]'](0)
-        } else {
-          return $ret_or_39
-        }; return nil; })())) {
+      $def(self, '$loc', function $$loc(token) {
+        
+        if (($truthy(token) && ($truthy(token['$[]'](0))))) {
           return token['$[]'](1)
         } else {
           return nil
         }
-      }, $Default_loc$203.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$diagnostic', $Default_diagnostic$204 = function $$diagnostic(type, reason, arguments$, location, highlights) {
+      $def(self, '$diagnostic', function $$diagnostic(type, reason, arguments$, location, highlights) {
         var self = this;
 
         
         
-        if (highlights == null) {
-          highlights = [];
-        };
-        self.parser.$diagnostics().$process($$($nesting, 'Diagnostic').$new(type, reason, arguments$, location, highlights));
-        if (type['$==']("error")) {
+        if (highlights == null) highlights = [];;
+        self.parser.$diagnostics().$process($$('Diagnostic').$new(type, reason, arguments$, location, highlights));
+        if ($eqeq(type, "error")) {
           return self.parser.$send("yyerror")
         } else {
           return nil
         };
-      }, $Default_diagnostic$204.$$arity = -5);
+      }, -5);
       
-      Opal.def(self, '$validate_definee', $Default_validate_definee$205 = function $$validate_definee(definee) {
-        var self = this, $case = nil;
+      $def(self, '$validate_definee', function $$validate_definee(definee) {
+        var self = this, $ret_or_1 = nil;
 
-        return (function() {$case = definee.$type();
-        if ("int"['$===']($case) || "str"['$===']($case) || "dstr"['$===']($case) || "sym"['$===']($case) || "dsym"['$===']($case) || "regexp"['$===']($case) || "array"['$===']($case) || "hash"['$===']($case)) {
-        self.$diagnostic("error", "singleton_literal", nil, definee.$loc().$expression());
-        return false;}
-        else {return true}})()
-      }, $Default_validate_definee$205.$$arity = 1);
+        if (($eqeqeq("int", ($ret_or_1 = definee.$type())) || (($eqeqeq("str", $ret_or_1) || (($eqeqeq("dstr", $ret_or_1) || (($eqeqeq("sym", $ret_or_1) || (($eqeqeq("dsym", $ret_or_1) || (($eqeqeq("regexp", $ret_or_1) || (($eqeqeq("array", $ret_or_1) || ($eqeqeq("hash", $ret_or_1)))))))))))))))) {
+          
+          self.$diagnostic("error", "singleton_literal", nil, definee.$loc().$expression());
+          return false;
+        } else {
+          return true
+        }
+      }, 1);
       
-      Opal.def(self, '$rewrite_hash_args_to_kwargs', $Default_rewrite_hash_args_to_kwargs$206 = function $$rewrite_hash_args_to_kwargs(args) {
-        var self = this, $ret_or_40 = nil, $writer = nil, $ret_or_41 = nil, $ret_or_42 = nil;
+      $def(self, '$rewrite_hash_args_to_kwargs', function $$rewrite_hash_args_to_kwargs(args) {
+        var self = this, $writer = nil;
 
-        if ($truthy((function() {if ($truthy(($ret_or_40 = args['$any?']()))) {
-          return self['$kwargs?'](args.$last())
-        } else {
-          return $ret_or_40
-        }; return nil; })())) {
+        if (($truthy(args['$any?']()) && ($truthy(self['$kwargs?'](args.$last()))))) {
           
           $writer = [$rb_minus(args.$length(), 1), args['$[]']($rb_minus(args.$length(), 1)).$updated("kwargs")];
-          $send(args, '[]=', Opal.to_a($writer));
+          $send(args, '[]=', $to_a($writer));
           return $writer[$rb_minus($writer["length"], 1)];
-        } else if ($truthy((function() {if ($truthy(($ret_or_41 = (function() {if ($truthy(($ret_or_42 = $rb_gt(args.$length(), 1)))) {
-          return args.$last().$type()['$==']("block_pass")
-        } else {
-          return $ret_or_42
-        }; return nil; })()))) {
-          return self['$kwargs?'](args['$[]']($rb_minus(args.$length(), 2)))
-        } else {
-          return $ret_or_41
-        }; return nil; })())) {
+        } else if ((($truthy($rb_gt(args.$length(), 1)) && ($eqeq(args.$last().$type(), "block_pass"))) && ($truthy(self['$kwargs?'](args['$[]']($rb_minus(args.$length(), 2))))))) {
           
           $writer = [$rb_minus(args.$length(), 2), args['$[]']($rb_minus(args.$length(), 2)).$updated("kwargs")];
-          $send(args, '[]=', Opal.to_a($writer));
+          $send(args, '[]=', $to_a($writer));
           return $writer[$rb_minus($writer["length"], 1)];
         } else {
           return nil
         }
-      }, $Default_rewrite_hash_args_to_kwargs$206.$$arity = 1);
-      return (Opal.def(self, '$kwargs?', $Default_kwargs$ques$207 = function(node) {
-        var self = this, $ret_or_43 = nil, $ret_or_44 = nil;
+      }, 1);
+      return $def(self, '$kwargs?', function $Default_kwargs$ques$20(node) {
+        var $ret_or_1 = nil, $ret_or_2 = nil;
 
-        if ($truthy(($ret_or_43 = (function() {if ($truthy(($ret_or_44 = node.$type()['$==']("hash")))) {
-          return node.$loc().$begin()['$nil?']()
-        } else {
-          return $ret_or_44
-        }; return nil; })()))) {
+        if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = node.$type()['$==']("hash"))) ? (node.$loc().$begin()['$nil?']()) : ($ret_or_2))))) {
           return node.$loc().$end()['$nil?']()
         } else {
-          return $ret_or_43
+          return $ret_or_1
         }
-      }, $Default_kwargs$ques$207.$$arity = 1), nil) && 'kwargs?';
-    })($$($nesting, 'Builders'), null, $nesting)
+      }, 1);
+    })($$('Builders'), null, $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/context"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy;
+Opal.modules["parser/context"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $const_set = Opal.const_set, $def = Opal.def, $send = Opal.send, $to_a = Opal.to_a, $truthy = Opal.truthy;
 
-  Opal.add_stubs(['$reset', '$attr_accessor', '$in_block', '$in_lambda']);
+  Opal.add_stubs('reset,attr_accessor,in_block,in_lambda');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -22180,18 +19365,18 @@ Opal.modules["parser/context"] = function(Opal) {
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Context');
 
-      var $nesting = [self].concat($parent_nesting), $Context_initialize$1, $Context_reset$2, $Context_in_dynamic_block$ques$3;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
-      Opal.const_set($nesting[0], 'FLAGS', ["in_defined", "in_kwarg", "in_argdef", "in_def", "in_class", "in_block", "in_lambda"]);
+      $const_set($nesting[0], 'FLAGS', ["in_defined", "in_kwarg", "in_argdef", "in_def", "in_class", "in_block", "in_lambda"]);
       
-      Opal.def(self, '$initialize', $Context_initialize$1 = function $$initialize() {
+      $def(self, '$initialize', function $$initialize() {
         var self = this;
 
         return self.$reset()
-      }, $Context_initialize$1.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$reset', $Context_reset$2 = function $$reset() {
+      $def(self, '$reset', function $$reset() {
         var self = this;
 
         
@@ -22202,9 +19387,9 @@ Opal.modules["parser/context"] = function(Opal) {
         self.in_class = false;
         self.in_block = false;
         return (self.in_lambda = false);
-      }, $Context_reset$2.$$arity = 0);
-      $send(self, 'attr_accessor', Opal.to_a($$($nesting, 'FLAGS')));
-      return (Opal.def(self, '$in_dynamic_block?', $Context_in_dynamic_block$ques$3 = function() {
+      }, 0);
+      $send(self, 'attr_accessor', $to_a($$('FLAGS')));
+      return $def(self, '$in_dynamic_block?', function $Context_in_dynamic_block$ques$1() {
         var self = this, $ret_or_1 = nil;
 
         if ($truthy(($ret_or_1 = self.$in_block()))) {
@@ -22212,22 +19397,15 @@ Opal.modules["parser/context"] = function(Opal) {
         } else {
           return self.$in_lambda()
         }
-      }, $Context_in_dynamic_block$ques$3.$$arity = 0), nil) && 'in_dynamic_block?';
+      }, 0);
     })($nesting[0], null, $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/max_numparam_stack"] = function(Opal) {
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $hash2 = Opal.hash2, $send = Opal.send;
+Opal.modules["parser/max_numparam_stack"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $const_set = Opal.const_set, $def = Opal.def, $truthy = Opal.truthy, $rb_gt = Opal.rb_gt, $hash2 = Opal.hash2, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus;
 
-  Opal.add_stubs(['$attr_reader', '$==', '$size', '$set', '$top', '$>', '$max', '$[]', '$last', '$push', '$pop', '$private', '$[]=', '$-']);
+  Opal.add_stubs('attr_reader,==,size,set,top,>,max,[],last,push,pop,private,[]=,-');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -22236,38 +19414,38 @@ Opal.modules["parser/max_numparam_stack"] = function(Opal) {
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'MaxNumparamStack');
 
-      var $nesting = [self].concat($parent_nesting), $MaxNumparamStack_initialize$1, $MaxNumparamStack_empty$ques$2, $MaxNumparamStack_has_ordinary_params$excl$3, $MaxNumparamStack_has_ordinary_params$ques$4, $MaxNumparamStack_has_numparams$ques$5, $MaxNumparamStack_register$6, $MaxNumparamStack_top$7, $MaxNumparamStack_push$8, $MaxNumparamStack_pop$9, $MaxNumparamStack_set$10;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.stack = nil;
+      $proto.stack = nil;
       
       self.$attr_reader("stack");
-      Opal.const_set($nesting[0], 'ORDINARY_PARAMS', -1);
+      $const_set($nesting[0], 'ORDINARY_PARAMS', -1);
       
-      Opal.def(self, '$initialize', $MaxNumparamStack_initialize$1 = function $$initialize() {
+      $def(self, '$initialize', function $$initialize() {
         var self = this;
 
         return (self.stack = [])
-      }, $MaxNumparamStack_initialize$1.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$empty?', $MaxNumparamStack_empty$ques$2 = function() {
+      $def(self, '$empty?', function $MaxNumparamStack_empty$ques$1() {
         var self = this;
 
         return self.stack.$size()['$=='](0)
-      }, $MaxNumparamStack_empty$ques$2.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$has_ordinary_params!', $MaxNumparamStack_has_ordinary_params$excl$3 = function() {
+      $def(self, '$has_ordinary_params!', function $MaxNumparamStack_has_ordinary_params$excl$2() {
         var self = this;
 
-        return self.$set($$($nesting, 'ORDINARY_PARAMS'))
-      }, $MaxNumparamStack_has_ordinary_params$excl$3.$$arity = 0);
+        return self.$set($$('ORDINARY_PARAMS'))
+      }, 0);
       
-      Opal.def(self, '$has_ordinary_params?', $MaxNumparamStack_has_ordinary_params$ques$4 = function() {
+      $def(self, '$has_ordinary_params?', function $MaxNumparamStack_has_ordinary_params$ques$3() {
         var self = this;
 
-        return self.$top()['$==']($$($nesting, 'ORDINARY_PARAMS'))
-      }, $MaxNumparamStack_has_ordinary_params$ques$4.$$arity = 0);
+        return self.$top()['$==']($$('ORDINARY_PARAMS'))
+      }, 0);
       
-      Opal.def(self, '$has_numparams?', $MaxNumparamStack_has_numparams$ques$5 = function() {
+      $def(self, '$has_numparams?', function $MaxNumparamStack_has_numparams$ques$4() {
         var self = this, $ret_or_1 = nil;
 
         if ($truthy(($ret_or_1 = self.$top()))) {
@@ -22275,21 +19453,21 @@ Opal.modules["parser/max_numparam_stack"] = function(Opal) {
         } else {
           return $ret_or_1
         }
-      }, $MaxNumparamStack_has_numparams$ques$5.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$register', $MaxNumparamStack_register$6 = function $$register(numparam) {
+      $def(self, '$register', function $$register(numparam) {
         var self = this;
 
         return self.$set([self.$top(), numparam].$max())
-      }, $MaxNumparamStack_register$6.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$top', $MaxNumparamStack_top$7 = function $$top() {
+      $def(self, '$top', function $$top() {
         var self = this;
 
         return self.stack.$last()['$[]']("value")
-      }, $MaxNumparamStack_top$7.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$push', $MaxNumparamStack_push$8 = function $$push($kwargs) {
+      $def(self, '$push', function $$push($kwargs) {
         var static$, self = this;
 
         
@@ -22305,102 +19483,97 @@ Opal.modules["parser/max_numparam_stack"] = function(Opal) {
         }
         static$ = $kwargs.$$smap["static"];;
         return self.stack.$push($hash2(["value", "static"], {"value": 0, "static": static$}));
-      }, $MaxNumparamStack_push$8.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$pop', $MaxNumparamStack_pop$9 = function $$pop() {
+      $def(self, '$pop', function $$pop() {
         var self = this;
 
         return self.stack.$pop()['$[]']("value")
-      }, $MaxNumparamStack_pop$9.$$arity = 0);
+      }, 0);
       self.$private();
-      return (Opal.def(self, '$set', $MaxNumparamStack_set$10 = function $$set(value) {
+      return $def(self, '$set', function $$set(value) {
         var self = this, $writer = nil;
 
         
         $writer = ["value", value];
-        $send(self.stack.$last(), '[]=', Opal.to_a($writer));
+        $send(self.stack.$last(), '[]=', $to_a($writer));
         return $writer[$rb_minus($writer["length"], 1)];
-      }, $MaxNumparamStack_set$10.$$arity = 1), nil) && 'set';
+      }, 1);
     })($nesting[0], null, $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/current_arg_stack"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send;
+Opal.modules["parser/current_arg_stack"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $def = Opal.def, $rb_minus = Opal.rb_minus, $send = Opal.send, $to_a = Opal.to_a;
 
-  Opal.add_stubs(['$attr_reader', '$freeze', '$==', '$size', '$<<', '$-', '$length', '$[]=', '$pop', '$clear', '$last']);
+  Opal.add_stubs('attr_reader,freeze,==,size,<<,-,length,[]=,pop,clear,last');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
     var $nesting = [self].concat($parent_nesting);
 
-    return (function($base, $super, $parent_nesting) {
+    return (function($base, $super) {
       var self = $klass($base, $super, 'CurrentArgStack');
 
-      var $nesting = [self].concat($parent_nesting), $CurrentArgStack_initialize$1, $CurrentArgStack_empty$ques$2, $CurrentArgStack_push$3, $CurrentArgStack_set$4, $CurrentArgStack_pop$5, $CurrentArgStack_reset$6, $CurrentArgStack_top$7;
+      var $proto = self.$$prototype;
 
-      self.$$prototype.stack = nil;
+      $proto.stack = nil;
       
       self.$attr_reader("stack");
       
-      Opal.def(self, '$initialize', $CurrentArgStack_initialize$1 = function $$initialize() {
+      $def(self, '$initialize', function $$initialize() {
         var self = this;
 
         
         self.stack = [];
         return self.$freeze();
-      }, $CurrentArgStack_initialize$1.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$empty?', $CurrentArgStack_empty$ques$2 = function() {
+      $def(self, '$empty?', function $CurrentArgStack_empty$ques$1() {
         var self = this;
 
         return self.stack.$size()['$=='](0)
-      }, $CurrentArgStack_empty$ques$2.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$push', $CurrentArgStack_push$3 = function $$push(value) {
+      $def(self, '$push', function $$push(value) {
         var self = this;
 
         return self.stack['$<<'](value)
-      }, $CurrentArgStack_push$3.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$set', $CurrentArgStack_set$4 = function $$set(value) {
+      $def(self, '$set', function $$set(value) {
         var self = this, $writer = nil;
 
         
         $writer = [$rb_minus(self.stack.$length(), 1), value];
-        $send(self.stack, '[]=', Opal.to_a($writer));
+        $send(self.stack, '[]=', $to_a($writer));
         return $writer[$rb_minus($writer["length"], 1)];
-      }, $CurrentArgStack_set$4.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$pop', $CurrentArgStack_pop$5 = function $$pop() {
+      $def(self, '$pop', function $$pop() {
         var self = this;
 
         return self.stack.$pop()
-      }, $CurrentArgStack_pop$5.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$reset', $CurrentArgStack_reset$6 = function $$reset() {
+      $def(self, '$reset', function $$reset() {
         var self = this;
 
         return self.stack.$clear()
-      }, $CurrentArgStack_reset$6.$$arity = 0);
-      return (Opal.def(self, '$top', $CurrentArgStack_top$7 = function $$top() {
+      }, 0);
+      return $def(self, '$top', function $$top() {
         var self = this;
 
         return self.stack.$last()
-      }, $CurrentArgStack_top$7.$$arity = 0), nil) && 'top';
-    })($nesting[0], null, $nesting)
+      }, 0);
+    })($nesting[0], null)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/variables_stack"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass;
+Opal.modules["parser/variables_stack"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $def = Opal.def;
 
-  Opal.add_stubs(['$push', '$empty?', '$<<', '$new', '$pop', '$clear', '$last', '$to_sym', '$include?']);
+  Opal.add_stubs('push,empty?,<<,new,pop,clear,last,to_sym,include?');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
@@ -22409,165 +19582,150 @@ Opal.modules["parser/variables_stack"] = function(Opal) {
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'VariablesStack');
 
-      var $nesting = [self].concat($parent_nesting), $VariablesStack_initialize$1, $VariablesStack_empty$ques$2, $VariablesStack_push$3, $VariablesStack_pop$4, $VariablesStack_reset$5, $VariablesStack_declare$6, $VariablesStack_declared$ques$7;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.stack = nil;
+      $proto.stack = nil;
       
       
-      Opal.def(self, '$initialize', $VariablesStack_initialize$1 = function $$initialize() {
+      $def(self, '$initialize', function $$initialize() {
         var self = this;
 
         
         self.stack = [];
         return self.$push();
-      }, $VariablesStack_initialize$1.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$empty?', $VariablesStack_empty$ques$2 = function() {
+      $def(self, '$empty?', function $VariablesStack_empty$ques$1() {
         var self = this;
 
         return self.stack['$empty?']()
-      }, $VariablesStack_empty$ques$2.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$push', $VariablesStack_push$3 = function $$push() {
+      $def(self, '$push', function $$push() {
         var self = this;
 
-        return self.stack['$<<']($$($nesting, 'Set').$new())
-      }, $VariablesStack_push$3.$$arity = 0);
+        return self.stack['$<<']($$('Set').$new())
+      }, 0);
       
-      Opal.def(self, '$pop', $VariablesStack_pop$4 = function $$pop() {
+      $def(self, '$pop', function $$pop() {
         var self = this;
 
         return self.stack.$pop()
-      }, $VariablesStack_pop$4.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$reset', $VariablesStack_reset$5 = function $$reset() {
+      $def(self, '$reset', function $$reset() {
         var self = this;
 
         return self.stack.$clear()
-      }, $VariablesStack_reset$5.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$declare', $VariablesStack_declare$6 = function $$declare(name) {
+      $def(self, '$declare', function $$declare(name) {
         var self = this;
 
         return self.stack.$last()['$<<'](name.$to_sym())
-      }, $VariablesStack_declare$6.$$arity = 1);
-      return (Opal.def(self, '$declared?', $VariablesStack_declared$ques$7 = function(name) {
+      }, 1);
+      return $def(self, '$declared?', function $VariablesStack_declared$ques$2(name) {
         var self = this;
 
         return self.stack.$last()['$include?'](name.$to_sym())
-      }, $VariablesStack_declared$ques$7.$$arity = 1), nil) && 'declared?';
+      }, 1);
     })($nesting[0], null, $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/base"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $gvars = Opal.gvars, $truthy = Opal.truthy, $hash2 = Opal.hash2;
+Opal.modules["parser/base"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $defs = Opal.defs, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $gvars = Opal.gvars, $eqeq = Opal.eqeq, $truthy = Opal.truthy, $def = Opal.def, $not = Opal.not, $eqeqeq = Opal.eqeqeq, $to_ary = Opal.to_ary, $hash2 = Opal.hash2;
 
-  Opal.add_stubs(['$default_parser', '$setup_source_buffer', '$default_encoding', '$parse', '$parse_with_comments', '$read', '$new', '$all_errors_are_fatal=', '$diagnostics', '$-', '$ignore_warnings=', '$lambda', '$puts', '$render', '$consumer=', '$force_encoding', '$dup', '$==', '$name', '$raw_source=', '$source=', '$private_class_method', '$attr_reader', '$version', '$diagnostics=', '$static_env=', '$context=', '$parser=', '$class', '$[]', '$reset', '$source_buffer=', '$do_parse', '$comments=', '$comments', '$tokens=', '$!', '$raise', '$tokens', '$private', '$advance', '$===', '$diagnostic', '$map', '$process', '$yyerror', '$token_to_str']);
+  Opal.add_stubs('default_parser,setup_source_buffer,default_encoding,parse,parse_with_comments,read,new,all_errors_are_fatal=,diagnostics,-,ignore_warnings=,lambda,puts,render,consumer=,force_encoding,dup,==,name,raw_source=,source=,private_class_method,attr_reader,version,diagnostics=,static_env=,context=,parser=,[],class,reset,source_buffer=,do_parse,comments=,comments,tokens=,!,raise,tokens,private,advance,===,diagnostic,map,process,yyerror,token_to_str');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
-    var $nesting = [self].concat($parent_nesting);
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Base');
 
-      var $nesting = [self].concat($parent_nesting), $Base_parse$1, $Base_parse_with_comments$2, $Base_parse_file$3, $Base_parse_file_with_comments$4, $Base_default_parser$5, $Base_setup_source_buffer$7, $Base_initialize$8, $Base_reset$9, $Base_parse$10, $Base_parse_with_comments$11, $Base_tokenize$12, $Base_next_token$13, $Base_check_kwarg_name$14, $Base_diagnostic$15, $Base_on_error$17;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.diagnostics = self.$$prototype.lexer = self.$$prototype.static_env = self.$$prototype.context = self.$$prototype.builder = self.$$prototype.current_arg_stack = self.$$prototype.pattern_variables = self.$$prototype.pattern_hash_keys = nil;
+      $proto.diagnostics = $proto.lexer = $proto.static_env = $proto.context = $proto.builder = $proto.current_arg_stack = $proto.pattern_variables = $proto.pattern_hash_keys = nil;
       
-      Opal.defs(self, '$parse', $Base_parse$1 = function $$parse(string, file, line) {
+      $defs(self, '$parse', function $$parse(string, file, line) {
         var self = this, parser = nil, source_buffer = nil;
 
         
         
-        if (file == null) {
-          file = "(string)";
-        };
+        if (file == null) file = "(string)";;
         
-        if (line == null) {
-          line = 1;
-        };
+        if (line == null) line = 1;;
         parser = self.$default_parser();
         source_buffer = self.$setup_source_buffer(file, line, string, parser.$default_encoding());
         return parser.$parse(source_buffer);
-      }, $Base_parse$1.$$arity = -2);
-      Opal.defs(self, '$parse_with_comments', $Base_parse_with_comments$2 = function $$parse_with_comments(string, file, line) {
+      }, -2);
+      $defs(self, '$parse_with_comments', function $$parse_with_comments(string, file, line) {
         var self = this, parser = nil, source_buffer = nil;
 
         
         
-        if (file == null) {
-          file = "(string)";
-        };
+        if (file == null) file = "(string)";;
         
-        if (line == null) {
-          line = 1;
-        };
+        if (line == null) line = 1;;
         parser = self.$default_parser();
         source_buffer = self.$setup_source_buffer(file, line, string, parser.$default_encoding());
         return parser.$parse_with_comments(source_buffer);
-      }, $Base_parse_with_comments$2.$$arity = -2);
-      Opal.defs(self, '$parse_file', $Base_parse_file$3 = function $$parse_file(filename) {
+      }, -2);
+      $defs(self, '$parse_file', function $$parse_file(filename) {
         var self = this;
 
-        return self.$parse($$($nesting, 'File').$read(filename), filename)
-      }, $Base_parse_file$3.$$arity = 1);
-      Opal.defs(self, '$parse_file_with_comments', $Base_parse_file_with_comments$4 = function $$parse_file_with_comments(filename) {
+        return self.$parse($$('File').$read(filename), filename)
+      }, 1);
+      $defs(self, '$parse_file_with_comments', function $$parse_file_with_comments(filename) {
         var self = this;
 
-        return self.$parse_with_comments($$($nesting, 'File').$read(filename), filename)
-      }, $Base_parse_file_with_comments$4.$$arity = 1);
-      Opal.defs(self, '$default_parser', $Base_default_parser$5 = function $$default_parser() {
-        var $$6, self = this, parser = nil, $writer = nil;
+        return self.$parse_with_comments($$('File').$read(filename), filename)
+      }, 1);
+      $defs(self, '$default_parser', function $$default_parser() {
+        var self = this, parser = nil, $writer = nil;
 
         
         parser = self.$new();
         
         $writer = [true];
-        $send(parser.$diagnostics(), 'all_errors_are_fatal=', Opal.to_a($writer));
+        $send(parser.$diagnostics(), 'all_errors_are_fatal=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         
         $writer = [true];
-        $send(parser.$diagnostics(), 'ignore_warnings=', Opal.to_a($writer));
+        $send(parser.$diagnostics(), 'ignore_warnings=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         
-        $writer = [$send(self, 'lambda', [], ($$6 = function(diagnostic){var self = $$6.$$s == null ? this : $$6.$$s;
-          if ($gvars.stderr == null) $gvars.stderr = nil;
+        $writer = [$send(self, 'lambda', [], function $$1(diagnostic){          if ($gvars.stderr == null) $gvars.stderr = nil;
 
           
           
-          if (diagnostic == null) {
-            diagnostic = nil;
-          };
-          return $gvars.stderr.$puts(diagnostic.$render());}, $$6.$$s = self, $$6.$$arity = 1, $$6))];
-        $send(parser.$diagnostics(), 'consumer=', Opal.to_a($writer));
+          if (diagnostic == null) diagnostic = nil;;
+          return $gvars.stderr.$puts(diagnostic.$render());}, 1)];
+        $send(parser.$diagnostics(), 'consumer=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return parser;
-      }, $Base_default_parser$5.$$arity = 0);
-      Opal.defs(self, '$setup_source_buffer', $Base_setup_source_buffer$7 = function $$setup_source_buffer(file, line, string, encoding) {
+      }, 0);
+      $defs(self, '$setup_source_buffer', function $$setup_source_buffer(file, line, string, encoding) {
         var self = this, source_buffer = nil, $writer = nil;
 
         
         string = string.$dup().$force_encoding(encoding);
-        source_buffer = $$$($$($nesting, 'Source'), 'Buffer').$new(file, line);
-        if (self.$name()['$==']("Parser::Ruby18")) {
+        source_buffer = $$$($$('Source'), 'Buffer').$new(file, line);
+        if ($eqeq(self.$name(), "Parser::Ruby18")) {
           
           $writer = [string];
-          $send(source_buffer, 'raw_source=', Opal.to_a($writer));
+          $send(source_buffer, 'raw_source=', $to_a($writer));
           $writer[$rb_minus($writer["length"], 1)];
         } else {
           
           $writer = [string];
-          $send(source_buffer, 'source=', Opal.to_a($writer));
+          $send(source_buffer, 'source=', $to_a($writer));
           $writer[$rb_minus($writer["length"], 1)];
         };
         return source_buffer;
-      }, $Base_setup_source_buffer$7.$$arity = 4);
+      }, 4);
       self.$private_class_method("setup_source_buffer");
       self.$attr_reader("lexer");
       self.$attr_reader("diagnostics");
@@ -22580,50 +19738,45 @@ Opal.modules["parser/base"] = function(Opal) {
       self.$attr_reader("pattern_variables");
       self.$attr_reader("pattern_hash_keys");
       
-      Opal.def(self, '$initialize', $Base_initialize$8 = function $$initialize(builder) {
-        var self = this, $writer = nil, $ret_or_1 = nil;
+      $def(self, '$initialize', function $$initialize(builder) {
+        var self = this, $writer = nil;
 
         
         
-        if (builder == null) {
-          builder = $$$($$$($$($nesting, 'Parser'), 'Builders'), 'Default').$new();
-        };
-        self.diagnostics = $$$($$($nesting, 'Diagnostic'), 'Engine').$new();
-        self.static_env = $$($nesting, 'StaticEnvironment').$new();
-        self.context = $$($nesting, 'Context').$new();
-        self.max_numparam_stack = $$($nesting, 'MaxNumparamStack').$new();
-        self.current_arg_stack = $$($nesting, 'CurrentArgStack').$new();
-        self.pattern_variables = $$($nesting, 'VariablesStack').$new();
-        self.pattern_hash_keys = $$($nesting, 'VariablesStack').$new();
-        self.lexer = $$($nesting, 'Lexer').$new(self.$version());
+        if (builder == null) builder = $$$($$$($$('Parser'), 'Builders'), 'Default').$new();;
+        self.diagnostics = $$$($$('Diagnostic'), 'Engine').$new();
+        self.static_env = $$('StaticEnvironment').$new();
+        self.context = $$('Context').$new();
+        self.max_numparam_stack = $$('MaxNumparamStack').$new();
+        self.current_arg_stack = $$('CurrentArgStack').$new();
+        self.pattern_variables = $$('VariablesStack').$new();
+        self.pattern_hash_keys = $$('VariablesStack').$new();
+        self.lexer = $$('Lexer').$new(self.$version());
         
         $writer = [self.diagnostics];
-        $send(self.lexer, 'diagnostics=', Opal.to_a($writer));
+        $send(self.lexer, 'diagnostics=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         
         $writer = [self.static_env];
-        $send(self.lexer, 'static_env=', Opal.to_a($writer));
+        $send(self.lexer, 'static_env=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         
         $writer = [self.context];
-        $send(self.lexer, 'context=', Opal.to_a($writer));
+        $send(self.lexer, 'context=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         self.builder = builder;
         
         $writer = [self];
-        $send(self.builder, 'parser=', Opal.to_a($writer));
+        $send(self.builder, 'parser=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         self.last_token = nil;
-        if ($truthy((function() {if ($truthy(($ret_or_1 = $$$(self.$class(), 'Racc_debug_parser')))) {
-          return $$($nesting, 'ENV')['$[]']("RACC_DEBUG")
-        } else {
-          return $ret_or_1
-        }; return nil; })())) {
-          self.yydebug = true};
+        if (($truthy($$$(self.$class(), 'Racc_debug_parser')) && ($truthy($$('ENV')['$[]']("RACC_DEBUG"))))) {
+          self.yydebug = true
+        };
         return self.$reset();
-      }, $Base_initialize$8.$$arity = -1);
+      }, -1);
       
-      Opal.def(self, '$reset', $Base_reset$9 = function $$reset() {
+      $def(self, '$reset', function $$reset() {
         var self = this;
 
         
@@ -22635,243 +19788,232 @@ Opal.modules["parser/base"] = function(Opal) {
         self.pattern_variables.$reset();
         self.pattern_hash_keys.$reset();
         return self;
-      }, $Base_reset$9.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$parse', $Base_parse$10 = function $$parse(source_buffer) {
-        var self = this, $writer = nil, $ret_or_2 = nil;
+      $def(self, '$parse', function $$parse(source_buffer) {
+        var self = this, $writer = nil, $ret_or_1 = nil;
 
         return (function() { try {
         
         
         $writer = [source_buffer];
-        $send(self.lexer, 'source_buffer=', Opal.to_a($writer));
+        $send(self.lexer, 'source_buffer=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         self.source_buffer = source_buffer;
-        if ($truthy(($ret_or_2 = self.$do_parse()))) {
-          return $ret_or_2
+        if ($truthy(($ret_or_1 = self.$do_parse()))) {
+          return $ret_or_1
         } else {
           return nil
         };
         } finally {
-          ((self.source_buffer = nil), (($writer = [nil]), $send(self.lexer, 'source_buffer=', Opal.to_a($writer)), $writer[$rb_minus($writer["length"], 1)]))
+          ((self.source_buffer = nil), (($writer = [nil]), $send(self.lexer, 'source_buffer=', $to_a($writer)), $writer[$rb_minus($writer["length"], 1)]))
         }; })()
-      }, $Base_parse$10.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$parse_with_comments', $Base_parse_with_comments$11 = function $$parse_with_comments(source_buffer) {
+      $def(self, '$parse_with_comments', function $$parse_with_comments(source_buffer) {
         var self = this, $writer = nil;
 
         return (function() { try {
         
         
         $writer = [[]];
-        $send(self.lexer, 'comments=', Opal.to_a($writer));
+        $send(self.lexer, 'comments=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return [self.$parse(source_buffer), self.lexer.$comments()];
         } finally {
-          (($writer = [nil]), $send(self.lexer, 'comments=', Opal.to_a($writer)), $writer[$rb_minus($writer["length"], 1)])
+          (($writer = [nil]), $send(self.lexer, 'comments=', $to_a($writer)), $writer[$rb_minus($writer["length"], 1)])
         }; })()
-      }, $Base_parse_with_comments$11.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$tokenize', $Base_tokenize$12 = function $$tokenize(source_buffer, recover) {
+      $def(self, '$tokenize', function $$tokenize(source_buffer, recover) {
         var self = this, $writer = nil, ast = nil;
 
         
         
-        if (recover == null) {
-          recover = false;
-        };
+        if (recover == null) recover = false;;
         return (function() { try {
         
         
         $writer = [[]];
-        $send(self.lexer, 'tokens=', Opal.to_a($writer));
+        $send(self.lexer, 'tokens=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         
         $writer = [[]];
-        $send(self.lexer, 'comments=', Opal.to_a($writer));
+        $send(self.lexer, 'comments=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         
         try {
           ast = self.$parse(source_buffer)
         } catch ($err) {
-          if (Opal.rescue($err, [$$$($$($nesting, 'Parser'), 'SyntaxError')])) {
+          if (Opal.rescue($err, [$$$($$('Parser'), 'SyntaxError')])) {
             try {
-              if ($truthy(recover['$!']())) {
-                self.$raise()}
+              if ($not(recover)) {
+                self.$raise()
+              }
             } finally { Opal.pop_exception(); }
           } else { throw $err; }
         };;
         return [ast, self.lexer.$comments(), self.lexer.$tokens()];
         } finally {
-          ((($writer = [nil]), $send(self.lexer, 'tokens=', Opal.to_a($writer)), $writer[$rb_minus($writer["length"], 1)]), (($writer = [nil]), $send(self.lexer, 'comments=', Opal.to_a($writer)), $writer[$rb_minus($writer["length"], 1)]))
+          ((($writer = [nil]), $send(self.lexer, 'tokens=', $to_a($writer)), $writer[$rb_minus($writer["length"], 1)]), (($writer = [nil]), $send(self.lexer, 'comments=', $to_a($writer)), $writer[$rb_minus($writer["length"], 1)]))
         }; })();
-      }, $Base_tokenize$12.$$arity = -2);
+      }, -2);
       self.$private();
       
-      Opal.def(self, '$next_token', $Base_next_token$13 = function $$next_token() {
+      $def(self, '$next_token', function $$next_token() {
         var self = this, token = nil;
 
         
         token = self.lexer.$advance();
         self.last_token = token;
         return token;
-      }, $Base_next_token$13.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$check_kwarg_name', $Base_check_kwarg_name$14 = function $$check_kwarg_name(name_t) {
-        var self = this, $case = nil;
+      $def(self, '$check_kwarg_name', function $$check_kwarg_name(name_t) {
+        var self = this, $ret_or_1 = nil;
 
-        return (function() {$case = name_t['$[]'](0);
-        if (/^[a-z_]/['$===']($case)) {return nil}
-        else if (/^[A-Z]/['$===']($case)) {return self.$diagnostic("error", "argument_const", nil, name_t)}
-        else { return nil }})()
-      }, $Base_check_kwarg_name$14.$$arity = 1);
+        if ($eqeqeq(/^[a-z_]/, ($ret_or_1 = name_t['$[]'](0)))) {
+          return nil
+        } else if ($eqeqeq(/^[A-Z]/, $ret_or_1)) {
+          return self.$diagnostic("error", "argument_const", nil, name_t)
+        } else {
+          return nil
+        }
+      }, 1);
       
-      Opal.def(self, '$diagnostic', $Base_diagnostic$15 = function $$diagnostic(level, reason, arguments$, location_t, highlights_ts) {
-        var $a, $b, $$16, self = this, _ = nil, location = nil, highlights = nil;
+      $def(self, '$diagnostic', function $$diagnostic(level, reason, arguments$, location_t, highlights_ts) {
+        var $a, $b, self = this, _ = nil, location = nil, highlights = nil;
 
         
         
-        if (highlights_ts == null) {
-          highlights_ts = [];
-        };
-        $b = location_t, $a = Opal.to_ary($b), (_ = ($a[0] == null ? nil : $a[0])), (location = ($a[1] == null ? nil : $a[1])), $b;
-        highlights = $send(highlights_ts, 'map', [], ($$16 = function(token){var self = $$16.$$s == null ? this : $$16.$$s, $c, $d, range = nil;
+        if (highlights_ts == null) highlights_ts = [];;
+        $b = location_t, $a = $to_ary($b), (_ = ($a[0] == null ? nil : $a[0])), (location = ($a[1] == null ? nil : $a[1])), $b;
+        highlights = $send(highlights_ts, 'map', [], function $$2(token){var $c, $d, range = nil;
 
           
           
-          if (token == null) {
-            token = nil;
-          };
-          $d = token, $c = Opal.to_ary($d), (_ = ($c[0] == null ? nil : $c[0])), (range = ($c[1] == null ? nil : $c[1])), $d;
-          return range;}, $$16.$$s = self, $$16.$$arity = 1, $$16));
-        self.diagnostics.$process($$($nesting, 'Diagnostic').$new(level, reason, arguments$, location, highlights));
-        if (level['$==']("error")) {
+          if (token == null) token = nil;;
+          $d = token, $c = $to_ary($d), (_ = ($c[0] == null ? nil : $c[0])), (range = ($c[1] == null ? nil : $c[1])), $d;
+          return range;}, 1);
+        self.diagnostics.$process($$('Diagnostic').$new(level, reason, arguments$, location, highlights));
+        if ($eqeq(level, "error")) {
           return self.$yyerror()
         } else {
           return nil
         };
-      }, $Base_diagnostic$15.$$arity = -5);
-      return (Opal.def(self, '$on_error', $Base_on_error$17 = function $$on_error(error_token_id, error_value, value_stack) {
+      }, -5);
+      return $def(self, '$on_error', function $$on_error(error_token_id, error_value, value_stack) {
         var $a, $b, self = this, token_name = nil, _ = nil, location = nil;
 
         
         token_name = self.$token_to_str(error_token_id);
-        $b = error_value, $a = Opal.to_ary($b), (_ = ($a[0] == null ? nil : $a[0])), (location = ($a[1] == null ? nil : $a[1])), $b;
-        return self.diagnostics.$process($$($nesting, 'Diagnostic').$new("error", "unexpected_token", $hash2(["token"], {"token": token_name}), location));
-      }, $Base_on_error$17.$$arity = 3), nil) && 'on_error';
-    })($nesting[0], $$$($$($nesting, 'Racc'), 'Parser'), $nesting)
+        $b = error_value, $a = $to_ary($b), (_ = ($a[0] == null ? nil : $a[0])), (location = ($a[1] == null ? nil : $a[1])), $b;
+        return self.diagnostics.$process($$('Diagnostic').$new("error", "unexpected_token", $hash2(["token"], {"token": token_name}), location));
+      }, 3);
+    })($nesting[0], $$$($$('Racc'), 'Parser'), $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/rewriter"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["parser/rewriter"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $def = Opal.def, $const_set = Opal.const_set, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $send2 = Opal.send2, $find_super = Opal.find_super;
 
-  Opal.add_stubs(['$new', '$process', '$include?', '$type', '$remove', '$wrap', '$insert_before', '$insert_after', '$replace', '$freeze', '$join', '$extend', '$warn_of_deprecation', '$class', '$warned_of_deprecation=', '$-']);
+  Opal.add_stubs('new,process,include?,type,remove,wrap,insert_before,insert_after,replace,freeze,join,extend,warn_of_deprecation,class,warned_of_deprecation=,-');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
-    var $nesting = [self].concat($parent_nesting);
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Rewriter');
 
-      var $nesting = [self].concat($parent_nesting), $Rewriter_rewrite$1, $Rewriter_assignment$ques$2, $Rewriter_remove$3, $Rewriter_wrap$4, $Rewriter_insert_before$5, $Rewriter_insert_after$6, $Rewriter_replace$7, $Rewriter_initialize$8;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.source_rewriter = nil;
+      $proto.source_rewriter = nil;
       
       
-      Opal.def(self, '$rewrite', $Rewriter_rewrite$1 = function $$rewrite(source_buffer, ast) {
+      $def(self, '$rewrite', function $$rewrite(source_buffer, ast) {
         var self = this;
 
         
-        self.source_rewriter = $$$($$($nesting, 'Source'), 'Rewriter').$new(source_buffer);
+        self.source_rewriter = $$$($$('Source'), 'Rewriter').$new(source_buffer);
         self.$process(ast);
         return self.source_rewriter.$process();
-      }, $Rewriter_rewrite$1.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$assignment?', $Rewriter_assignment$ques$2 = function(node) {
-        var self = this;
-
+      $def(self, '$assignment?', function $Rewriter_assignment$ques$1(node) {
+        
         return ["lvasgn", "ivasgn", "gvasgn", "cvasgn", "casgn"]['$include?'](node.$type())
-      }, $Rewriter_assignment$ques$2.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$remove', $Rewriter_remove$3 = function $$remove(range) {
+      $def(self, '$remove', function $$remove(range) {
         var self = this;
 
         return self.source_rewriter.$remove(range)
-      }, $Rewriter_remove$3.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$wrap', $Rewriter_wrap$4 = function $$wrap(range, before, after) {
+      $def(self, '$wrap', function $$wrap(range, before, after) {
         var self = this;
 
         return self.source_rewriter.$wrap(range, before, after)
-      }, $Rewriter_wrap$4.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$insert_before', $Rewriter_insert_before$5 = function $$insert_before(range, content) {
+      $def(self, '$insert_before', function $$insert_before(range, content) {
         var self = this;
 
         return self.source_rewriter.$insert_before(range, content)
-      }, $Rewriter_insert_before$5.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$insert_after', $Rewriter_insert_after$6 = function $$insert_after(range, content) {
+      $def(self, '$insert_after', function $$insert_after(range, content) {
         var self = this;
 
         return self.source_rewriter.$insert_after(range, content)
-      }, $Rewriter_insert_after$6.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$replace', $Rewriter_replace$7 = function $$replace(range, content) {
+      $def(self, '$replace', function $$replace(range, content) {
         var self = this;
 
         return self.source_rewriter.$replace(range, content)
-      }, $Rewriter_replace$7.$$arity = 2);
-      Opal.const_set($nesting[0], 'DEPRECATION_WARNING', ["Parser::Rewriter is deprecated.", "Please update your code to use Parser::TreeRewriter instead"].$join("\n").$freeze());
-      self.$extend($$($nesting, 'Deprecation'));
-      return (Opal.def(self, '$initialize', $Rewriter_initialize$8 = function $$initialize($a) {
-        var $post_args, $iter = $Rewriter_initialize$8.$$p, $yield = $iter || nil, self = this, $writer = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
-
-        if ($iter) $Rewriter_initialize$8.$$p = null;
-        // Prepare super implicit arguments
-        for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-          $zuper[$zuper_i] = arguments[$zuper_i];
-        }
+      }, 2);
+      $const_set($nesting[0], 'DEPRECATION_WARNING', ["Parser::Rewriter is deprecated.", "Please update your code to use Parser::TreeRewriter instead"].$join("\n").$freeze());
+      self.$extend($$('Deprecation'));
+      return $def(self, '$initialize', function $$initialize($a) {
+        var $post_args, $rest_arg, $yield = $$initialize.$$p || nil, self = this, $writer = nil;
+
+        delete $$initialize.$$p;
+        
         
+        $post_args = Opal.slice.call(arguments);
         
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
-        ;
+        $rest_arg = $post_args;;
         self.$class().$warn_of_deprecation();
         
         $writer = [true];
-        $send($$$($$($nesting, 'Source'), 'Rewriter'), 'warned_of_deprecation=', Opal.to_a($writer));
+        $send($$$($$('Source'), 'Rewriter'), 'warned_of_deprecation=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
-        return $send2(self, $find_super(self, 'initialize', $Rewriter_initialize$8, false, true), 'initialize', $zuper, $iter);
-      }, $Rewriter_initialize$8.$$arity = -1), nil) && 'initialize';
-    })($nesting[0], $$$($$$($$($nesting, 'Parser'), 'AST'), 'Processor'), $nesting)
+        return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', $to_a($rest_arg), $yield);
+      }, -1);
+    })($nesting[0], $$$($$$($$('Parser'), 'AST'), 'Processor'), $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/tree_rewriter"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $hash2 = Opal.hash2, $hash = Opal.hash;
+Opal.modules["parser/tree_rewriter"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $hash2 = Opal.hash2, $hash = Opal.hash, $def = Opal.def;
 
-  Opal.add_stubs(['$new', '$process', '$include?', '$type', '$remove', '$wrap', '$insert_before', '$insert_after', '$replace']);
+  Opal.add_stubs('new,process,include?,type,remove,wrap,insert_before,insert_after,replace');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
-    var $nesting = [self].concat($parent_nesting);
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'TreeRewriter');
 
-      var $nesting = [self].concat($parent_nesting), $TreeRewriter_rewrite$1, $TreeRewriter_assignment$ques$2, $TreeRewriter_remove$3, $TreeRewriter_wrap$4, $TreeRewriter_insert_before$5, $TreeRewriter_insert_after$6, $TreeRewriter_replace$7;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.source_rewriter = nil;
+      $proto.source_rewriter = nil;
       
       
-      Opal.def(self, '$rewrite', $TreeRewriter_rewrite$1 = function $$rewrite(source_buffer, ast, $kwargs) {
+      $def(self, '$rewrite', function $$rewrite(source_buffer, ast, $kwargs) {
         var policy, self = this;
 
         
@@ -22883,59 +20025,58 @@ Opal.modules["parser/tree_rewriter"] = function(Opal) {
         };
         
         policy = Opal.kwrestargs($kwargs, {});;
-        self.source_rewriter = $$$($$$($$($nesting, 'Parser'), 'Source'), 'TreeRewriter').$new(source_buffer, Opal.to_hash(policy));
+        self.source_rewriter = $$$($$$($$('Parser'), 'Source'), 'TreeRewriter').$new(source_buffer, Opal.to_hash(policy));
         self.$process(ast);
         return self.source_rewriter.$process();
-      }, $TreeRewriter_rewrite$1.$$arity = -3);
+      }, -3);
       
-      Opal.def(self, '$assignment?', $TreeRewriter_assignment$ques$2 = function(node) {
-        var self = this;
-
+      $def(self, '$assignment?', function $TreeRewriter_assignment$ques$1(node) {
+        
         return ["lvasgn", "ivasgn", "gvasgn", "cvasgn", "casgn"]['$include?'](node.$type())
-      }, $TreeRewriter_assignment$ques$2.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$remove', $TreeRewriter_remove$3 = function $$remove(range) {
+      $def(self, '$remove', function $$remove(range) {
         var self = this;
 
         return self.source_rewriter.$remove(range)
-      }, $TreeRewriter_remove$3.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$wrap', $TreeRewriter_wrap$4 = function $$wrap(range, before, after) {
+      $def(self, '$wrap', function $$wrap(range, before, after) {
         var self = this;
 
         return self.source_rewriter.$wrap(range, before, after)
-      }, $TreeRewriter_wrap$4.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$insert_before', $TreeRewriter_insert_before$5 = function $$insert_before(range, content) {
+      $def(self, '$insert_before', function $$insert_before(range, content) {
         var self = this;
 
         return self.source_rewriter.$insert_before(range, content)
-      }, $TreeRewriter_insert_before$5.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$insert_after', $TreeRewriter_insert_after$6 = function $$insert_after(range, content) {
+      $def(self, '$insert_after', function $$insert_after(range, content) {
         var self = this;
 
         return self.source_rewriter.$insert_after(range, content)
-      }, $TreeRewriter_insert_after$6.$$arity = 2);
-      return (Opal.def(self, '$replace', $TreeRewriter_replace$7 = function $$replace(range, content) {
+      }, 2);
+      return $def(self, '$replace', function $$replace(range, content) {
         var self = this;
 
         return self.source_rewriter.$replace(range, content)
-      }, $TreeRewriter_replace$7.$$arity = 2), nil) && 'replace';
-    })($nesting[0], $$$($$$($$($nesting, 'Parser'), 'AST'), 'Processor'), $nesting)
+      }, 2);
+    })($nesting[0], $$$($$$($$('Parser'), 'AST'), 'Processor'), $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $truthy = Opal.truthy, $module = Opal.module;
+Opal.modules["parser"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $$$ = Opal.$$$, $truthy = Opal.truthy, $module = Opal.module;
 
-  Opal.add_stubs(['$=~', '$require', '$raise']);
+  Opal.add_stubs('=~,require,raise');
   
-  if ($truthy($$($nesting, 'RUBY_VERSION')['$=~'](/^1\.[89]\./))) {
+  if ($truthy($$('RUBY_VERSION')['$=~'](/^1\.[89]\./))) {
     
     self.$require("parser/version");
-    self.$raise($$($nesting, 'LoadError'), "" + "parser v" + ($$$($$($nesting, 'Parser'), 'VERSION')) + " cannot run on Ruby " + ($$($nesting, 'RUBY_VERSION')) + ".\n" + "Please upgrade to Ruby 2.0.0 or higher, or use an older version of the parser gem.\n");};
+    self.$raise($$('LoadError'), "parser v" + ($$$($$('Parser'), 'VERSION')) + " cannot run on Ruby " + ($$('RUBY_VERSION')) + ".\n" + "Please upgrade to Ruby 2.0.0 or higher, or use an older version of the parser gem.\n");
+  };
   self.$require("set");
   self.$require("racc/parser");
   self.$require("ast");
@@ -22948,21 +20089,19 @@ Opal.modules["parser"] = function(Opal) {
     self.$require("parser/version");
     self.$require("parser/messages");
     self.$require("parser/deprecation");
-    (function($base, $parent_nesting) {
+    (function($base) {
       var self = $module($base, 'AST');
 
-      var $nesting = [self].concat($parent_nesting);
-
+      
       
       self.$require("parser/ast/node");
       self.$require("parser/ast/processor");
       return self.$require("parser/meta");
-    })($nesting[0], $nesting);
-    (function($base, $parent_nesting) {
+    })($nesting[0]);
+    (function($base) {
       var self = $module($base, 'Source');
 
-      var $nesting = [self].concat($parent_nesting);
-
+      
       
       self.$require("parser/source/buffer");
       self.$require("parser/source/range");
@@ -22988,7 +20127,7 @@ Opal.modules["parser"] = function(Opal) {
       self.$require("parser/source/map/rescue_body");
       self.$require("parser/source/map/heredoc");
       return self.$require("parser/source/map/objc_kwarg");
-    })($nesting[0], $nesting);
+    })($nesting[0]);
     self.$require("parser/syntax_error");
     self.$require("parser/clobbering_error");
     self.$require("parser/diagnostic");
@@ -22998,13 +20137,12 @@ Opal.modules["parser"] = function(Opal) {
     self.$require("parser/lexer/literal");
     self.$require("parser/lexer/stack_state");
     self.$require("parser/lexer/dedenter");
-    (function($base, $parent_nesting) {
+    (function($base) {
       var self = $module($base, 'Builders');
 
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$require("parser/builders/default")
-    })($nesting[0], $nesting);
+    })($nesting[0]);
     self.$require("parser/context");
     self.$require("parser/max_numparam_stack");
     self.$require("parser/current_arg_stack");
@@ -23015,63 +20153,47 @@ Opal.modules["parser"] = function(Opal) {
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["parser/ruby30"] = function(Opal) {
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $hash2 = Opal.hash2, $send = Opal.send, $hash = Opal.hash, $slice = Opal.slice;
+Opal.modules["parser/ruby31"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $def = Opal.def, $truthy = Opal.truthy, $not = Opal.not, $hash2 = Opal.hash2, $send = Opal.send, $rb_gt = Opal.rb_gt, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $rb_plus = Opal.rb_plus, $hash = Opal.hash, $const_set = Opal.const_set, $to_ary = Opal.to_ary, $eqeq = Opal.eqeq, $slice = Opal.slice;
 
-  Opal.add_stubs(['$require', '$!', '$include?', '$[]', '$end_with?', '$diagnostic', '$extend_static', '$push', '$cmdarg', '$cond', '$unextend', '$pop', '$children', '$=~', '$declared?', '$static_env', '$in_dynamic_block?', '$expression', '$loc', '$has_ordinary_params?', '$max_numparam_stack', '$dup', '$stack', '$reverse_each', '$>', '$declare', '$register', '$to_i', '$new', '$each', '$split', '$empty?', '$[]=', '$-', '$+', '$compstmt', '$<<', '$preexe', '$nil?', '$begin_body', '$state=', '$alias', '$gvar', '$back_ref', '$undef_method', '$condition_mod', '$loop_mod', '$rescue_body', '$postexe', '$multi_assign', '$assign', '$array', '$op_assign', '$index', '$call_method', '$const_op_assignable', '$const_fetch', '$logical_op', '$not_op', '$command_start=', '$in_kwarg', '$in_kwarg=', '$match_pattern', '$match_pattern_p', '$local_push', '$in_def=', '$in_block=', '$in_block', '$block', '$keyword_cmd', '$multi_lhs', '$begin', '$splat', '$concat', '$assignable', '$index_asgn', '$==', '$attr_asgn', '$const_global', '$const', '$symbol_internal', '$range_inclusive', '$range_exclusive', '$binary_op', '$unary_op', '$match_op', '$ternary', '$endless_method_name', '$def_endless_method', '$local_pop', '$in_def', '$def_endless_singleton', '$associate', '$declared_forward_args?', '$forwarded_args', '$block_pass', '$begin_keyword', '$condition', '$loop', '$case', '$case_match', '$for', '$in_class=', '$def_class', '$in_class', '$def_sclass', '$def_module', '$def_method', '$def_singleton', '$context', '$in_lambda', '$arg', '$restarg', '$size', '$procarg0', '$args', '$has_ordinary_params!', '$set', '$shadowarg', '$extend_dynamic', '$in_lambda=', '$call_lambda', '$has_numparams?', '$numargs', '$top', '$any?', '$when', '$in_pattern', '$if_guard', '$unless_guard', '$match_with_trailing_comma', '$array_pattern', '$find_pattern', '$hash_pattern', '$match_as', '$match_alt', '$const_pattern', '$match_rest', '$match_pair', '$match_label', '$match_nil_pattern', '$accessible', '$match_var', '$ident', '$pin', '$string_compose', '$dedent_string', '$dedent_level', '$string', '$character', '$xstring_compose', '$regexp_options', '$regexp_compose', '$words_compose', '$word', '$symbols_compose', '$string_internal', '$ivar', '$cvar', '$symbol', '$symbol_compose', '$respond_to?', '$negate', '$unary_num', '$integer', '$float', '$rational', '$complex', '$nil', '$self', '$true', '$false', '$__FILE__', '$__LINE__', '$__ENCODING__', '$nth_ref', '$forward_arg', '$declare_forward_args', '$forward_only_args', '$check_kwarg_name', '$kwoptarg', '$kwarg', '$kwnilarg', '$kwrestarg', '$optarg', '$blockarg', '$pair', '$pair_keyword', '$pair_quoted', '$kwsplat', '$yyerrok']);
+  Opal.add_stubs('require,end_with?,[],!,include?,diagnostic,extend_static,push,cmdarg,cond,unextend,pop,children,in_dynamic_block?,declared?,static_env,=~,expression,loc,has_ordinary_params?,max_numparam_stack,dup,stack,reverse_each,>,declare,register,to_i,new,each,split,empty?,[]=,-,+,compstmt,<<,preexe,nil?,begin_body,state=,alias,gvar,back_ref,undef_method,condition_mod,loop_mod,rescue_body,postexe,multi_assign,assign,array,op_assign,index,call_method,const_op_assignable,const_fetch,endless_method_name,def_endless_method,local_pop,in_def,in_def=,def_endless_singleton,logical_op,not_op,command_start=,in_kwarg,in_kwarg=,match_pattern,match_pattern_p,local_push,in_argdef=,in_block=,in_block,block,keyword_cmd,multi_lhs,begin,splat,concat,assignable,index_asgn,==,attr_asgn,const_global,const,symbol_internal,range_inclusive,range_exclusive,binary_op,unary_op,match_op,in_defined=,ternary,associate,declared_forward_args?,forwarded_args,block_pass,declared_anonymous_blockarg?,begin_keyword,condition,loop,case,case_match,for,in_class=,def_class,in_class,def_sclass,def_module,def_method,def_singleton,context,in_lambda,arg,restarg,size,procarg0,args,has_ordinary_params!,set,shadowarg,extend_dynamic,in_lambda=,call_lambda,has_numparams?,numargs,top,any?,when,in_pattern,if_guard,unless_guard,match_with_trailing_comma,array_pattern,find_pattern,hash_pattern,match_as,match_alt,const_pattern,match_rest,match_pair,match_label,match_nil_pattern,accessible,match_var,ident,pin,string_compose,dedent_string,dedent_level,string,character,xstring_compose,regexp_options,regexp_compose,words_compose,word,symbols_compose,string_internal,ivar,cvar,symbol,symbol_compose,respond_to?,negate,unary_num,integer,float,rational,complex,nil,self,true,false,__FILE__,__LINE__,__ENCODING__,nth_ref,declare_forward_args,forward_arg,check_kwarg_name,kwoptarg,kwarg,kwnilarg,kwrestarg,optarg,blockarg,declare_anonymous_blockarg,pair,pair_keyword,pair_label,pair_quoted,kwsplat,yyerrok');
   
   self.$require("racc/parser.rb");
   self.$require("parser");
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Parser');
 
-    var $nesting = [self].concat($parent_nesting);
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     return (function($base, $super, $parent_nesting) {
-      var self = $klass($base, $super, 'Ruby30');
+      var self = $klass($base, $super, 'Ruby31');
 
-      var $nesting = [self].concat($parent_nesting), $Ruby30_version$1, $Ruby30_default_encoding$2, $Ruby30_endless_method_name$3, $Ruby30_local_push$4, $Ruby30_local_pop$5, $Ruby30_try_declare_numparam$6, $Ruby30$8, $Ruby30$10, $Ruby30$12, $Ruby30$14, $Ruby30__reduce_1$16, $Ruby30__reduce_2$17, $Ruby30__reduce_3$18, $Ruby30__reduce_4$19, $Ruby30__reduce_5$20, $Ruby30__reduce_6$21, $Ruby30__reduce_7$22, $Ruby30__reduce_9$23, $Ruby30__reduce_10$24, $Ruby30__reduce_11$25, $Ruby30__reduce_12$26, $Ruby30__reduce_13$27, $Ruby30__reduce_14$28, $Ruby30__reduce_15$29, $Ruby30__reduce_16$30, $Ruby30__reduce_18$31, $Ruby30__reduce_19$32, $Ruby30__reduce_20$33, $Ruby30__reduce_21$34, $Ruby30__reduce_22$35, $Ruby30__reduce_23$36, $Ruby30__reduce_24$37, $Ruby30__reduce_25$38, $Ruby30__reduce_26$39, $Ruby30__reduce_27$40, $Ruby30__reduce_28$41, $Ruby30__reduce_29$42, $Ruby30__reduce_30$43, $Ruby30__reduce_32$44, $Ruby30__reduce_33$45, $Ruby30__reduce_34$46, $Ruby30__reduce_35$47, $Ruby30__reduce_37$48, $Ruby30__reduce_38$49, $Ruby30__reduce_39$50, $Ruby30__reduce_40$51, $Ruby30__reduce_41$52, $Ruby30__reduce_42$53, $Ruby30__reduce_43$54, $Ruby30__reduce_44$55, $Ruby30__reduce_46$56, $Ruby30__reduce_49$57, $Ruby30__reduce_50$58, $Ruby30__reduce_51$59, $Ruby30__reduce_52$60, $Ruby30__reduce_53$61, $Ruby30__reduce_54$62, $Ruby30__reduce_55$63, $Ruby30__reduce_56$64, $Ruby30__reduce_59$65, $Ruby30__reduce_60$66, $Ruby30__reduce_61$67, $Ruby30__reduce_62$68, $Ruby30__reduce_63$69, $Ruby30__reduce_64$70, $Ruby30__reduce_68$71, $Ruby30__reduce_69$72, $Ruby30__reduce_70$73, $Ruby30__reduce_72$74, $Ruby30__reduce_73$75, $Ruby30__reduce_74$76, $Ruby30__reduce_75$77, $Ruby30__reduce_76$78, $Ruby30__reduce_77$79, $Ruby30__reduce_78$80, $Ruby30__reduce_79$81, $Ruby30__reduce_80$82, $Ruby30__reduce_81$83, $Ruby30__reduce_82$84, $Ruby30__reduce_83$85, $Ruby30__reduce_84$86, $Ruby30__reduce_85$87, $Ruby30__reduce_86$88, $Ruby30__reduce_88$89, $Ruby30__reduce_89$90, $Ruby30__reduce_90$91, $Ruby30__reduce_91$92, $Ruby30__reduce_92$93, $Ruby30__reduce_93$94, $Ruby30__reduce_94$95, $Ruby30__reduce_95$96, $Ruby30__reduce_96$97, $Ruby30__reduce_98$98, $Ruby30__reduce_99$99, $Ruby30__reduce_100$100, $Ruby30__reduce_101$101, $Ruby30__reduce_102$102, $Ruby30__reduce_103$103, $Ruby30__reduce_104$104, $Ruby30__reduce_105$105, $Ruby30__reduce_106$106, $Ruby30__reduce_107$107, $Ruby30__reduce_108$108, $Ruby30__reduce_109$109, $Ruby30__reduce_110$110, $Ruby30__reduce_111$111, $Ruby30__reduce_112$112, $Ruby30__reduce_113$113, $Ruby30__reduce_114$114, $Ruby30__reduce_115$115, $Ruby30__reduce_116$116, $Ruby30__reduce_117$117, $Ruby30__reduce_118$118, $Ruby30__reduce_119$119, $Ruby30__reduce_120$120, $Ruby30__reduce_121$121, $Ruby30__reduce_123$122, $Ruby30__reduce_124$123, $Ruby30__reduce_125$124, $Ruby30__reduce_131$125, $Ruby30__reduce_133$126, $Ruby30__reduce_134$127, $Ruby30__reduce_135$128, $Ruby30__reduce_207$129, $Ruby30__reduce_208$130, $Ruby30__reduce_209$131, $Ruby30__reduce_210$132, $Ruby30__reduce_211$133, $Ruby30__reduce_212$134, $Ruby30__reduce_213$135, $Ruby30__reduce_214$136, $Ruby30__reduce_215$137, $Ruby30__reduce_216$138, $Ruby30__reduce_217$139, $Ruby30__reduce_218$140, $Ruby30__reduce_219$141, $Ruby30__reduce_220$142, $Ruby30__reduce_221$143, $Ruby30__reduce_222$144, $Ruby30__reduce_223$145, $Ruby30__reduce_224$146, $Ruby30__reduce_225$147, $Ruby30__reduce_226$148, $Ruby30__reduce_227$149, $Ruby30__reduce_228$150, $Ruby30__reduce_229$151, $Ruby30__reduce_230$152, $Ruby30__reduce_231$153, $Ruby30__reduce_232$154, $Ruby30__reduce_233$155, $Ruby30__reduce_234$156, $Ruby30__reduce_236$157, $Ruby30__reduce_237$158, $Ruby30__reduce_238$159, $Ruby30__reduce_239$160, $Ruby30__reduce_240$161, $Ruby30__reduce_241$162, $Ruby30__reduce_242$163, $Ruby30__reduce_243$164, $Ruby30__reduce_244$165, $Ruby30__reduce_245$166, $Ruby30__reduce_246$167, $Ruby30__reduce_247$168, $Ruby30__reduce_248$169, $Ruby30__reduce_249$170, $Ruby30__reduce_250$171, $Ruby30__reduce_251$172, $Ruby30__reduce_252$173, $Ruby30__reduce_258$174, $Ruby30__reduce_259$175, $Ruby30__reduce_263$176, $Ruby30__reduce_264$177, $Ruby30__reduce_266$178, $Ruby30__reduce_267$179, $Ruby30__reduce_268$180, $Ruby30__reduce_269$181, $Ruby30__reduce_270$182, $Ruby30__reduce_272$183, $Ruby30__reduce_275$184, $Ruby30__reduce_276$185, $Ruby30__reduce_277$186, $Ruby30__reduce_278$187, $Ruby30__reduce_279$188, $Ruby30__reduce_280$189, $Ruby30__reduce_281$190, $Ruby30__reduce_282$191, $Ruby30__reduce_283$192, $Ruby30__reduce_284$193, $Ruby30__reduce_285$194, $Ruby30__reduce_286$195, $Ruby30__reduce_287$196, $Ruby30__reduce_288$197, $Ruby30__reduce_289$198, $Ruby30__reduce_290$199, $Ruby30__reduce_291$200, $Ruby30__reduce_293$201, $Ruby30__reduce_294$202, $Ruby30__reduce_295$203, $Ruby30__reduce_306$204, $Ruby30__reduce_307$205, $Ruby30__reduce_308$206, $Ruby30__reduce_309$207, $Ruby30__reduce_310$208, $Ruby30__reduce_311$209, $Ruby30__reduce_312$210, $Ruby30__reduce_313$211, $Ruby30__reduce_314$212, $Ruby30__reduce_315$213, $Ruby30__reduce_316$214, $Ruby30__reduce_317$215, $Ruby30__reduce_318$216, $Ruby30__reduce_319$217, $Ruby30__reduce_320$218, $Ruby30__reduce_321$219, $Ruby30__reduce_322$220, $Ruby30__reduce_323$221, $Ruby30__reduce_324$222, $Ruby30__reduce_325$223, $Ruby30__reduce_327$224, $Ruby30__reduce_329$225, $Ruby30__reduce_330$226, $Ruby30__reduce_331$227, $Ruby30__reduce_332$228, $Ruby30__reduce_333$229, $Ruby30__reduce_334$230, $Ruby30__reduce_335$231, $Ruby30__reduce_336$232, $Ruby30__reduce_337$233, $Ruby30__reduce_338$234, $Ruby30__reduce_339$235, $Ruby30__reduce_340$236, $Ruby30__reduce_341$237, $Ruby30__reduce_342$238, $Ruby30__reduce_343$239, $Ruby30__reduce_344$240, $Ruby30__reduce_345$241, $Ruby30__reduce_346$242, $Ruby30__reduce_347$243, $Ruby30__reduce_348$244, $Ruby30__reduce_350$245, $Ruby30__reduce_351$246, $Ruby30__reduce_352$247, $Ruby30__reduce_353$248, $Ruby30__reduce_356$249, $Ruby30__reduce_360$250, $Ruby30__reduce_362$251, $Ruby30__reduce_365$252, $Ruby30__reduce_366$253, $Ruby30__reduce_367$254, $Ruby30__reduce_368$255, $Ruby30__reduce_370$256, $Ruby30__reduce_371$257, $Ruby30__reduce_372$258, $Ruby30__reduce_373$259, $Ruby30__reduce_374$260, $Ruby30__reduce_375$261, $Ruby30__reduce_378$262, $Ruby30__reduce_379$263, $Ruby30__reduce_380$264, $Ruby30__reduce_381$265, $Ruby30__reduce_382$266, $Ruby30__reduce_383$267, $Ruby30__reduce_385$268, $Ruby30__reduce_386$269, $Ruby30__reduce_387$270, $Ruby30__reduce_388$271, $Ruby30__reduce_389$272, $Ruby30__reduce_391$273, $Ruby30__reduce_392$274, $Ruby30__reduce_393$275, $Ruby30__reduce_394$276, $Ruby30__reduce_395$277, $Ruby30__reduce_396$278, $Ruby30__reduce_397$279, $Ruby30__reduce_398$280, $Ruby30__reduce_400$281, $Ruby30__reduce_401$282, $Ruby30__reduce_402$283, $Ruby30__reduce_403$284, $Ruby30__reduce_404$285, $Ruby30__reduce_405$286, $Ruby30__reduce_406$287, $Ruby30__reduce_407$288, $Ruby30__reduce_408$289, $Ruby30__reduce_410$290, $Ruby30__reduce_411$291, $Ruby30__reduce_412$292, $Ruby30__reduce_413$293, $Ruby30__reduce_414$294, $Ruby30__reduce_415$295, $Ruby30__reduce_416$296, $Ruby30__reduce_417$297, $Ruby30__reduce_418$298, $Ruby30__reduce_419$299, $Ruby30__reduce_420$300, $Ruby30__reduce_421$301, $Ruby30__reduce_422$302, $Ruby30__reduce_423$303, $Ruby30__reduce_424$304, $Ruby30__reduce_425$305, $Ruby30__reduce_426$306, $Ruby30__reduce_427$307, $Ruby30__reduce_428$308, $Ruby30__reduce_429$309, $Ruby30__reduce_430$310, $Ruby30__reduce_431$311, $Ruby30__reduce_432$312, $Ruby30__reduce_433$313, $Ruby30__reduce_434$314, $Ruby30__reduce_435$315, $Ruby30__reduce_436$316, $Ruby30__reduce_437$317, $Ruby30__reduce_438$318, $Ruby30__reduce_439$319, $Ruby30__reduce_440$320, $Ruby30__reduce_441$321, $Ruby30__reduce_442$322, $Ruby30__reduce_443$323, $Ruby30__reduce_444$324, $Ruby30__reduce_446$325, $Ruby30__reduce_447$326, $Ruby30__reduce_448$327, $Ruby30__reduce_449$328, $Ruby30__reduce_451$329, $Ruby30__reduce_452$330, $Ruby30__reduce_453$331, $Ruby30__reduce_455$332, $Ruby30__reduce_456$333, $Ruby30__reduce_457$334, $Ruby30__reduce_458$335, $Ruby30__reduce_459$336, $Ruby30__reduce_461$337, $Ruby30__reduce_463$338, $Ruby30__reduce_465$339, $Ruby30__reduce_466$340, $Ruby30__reduce_468$341, $Ruby30__reduce_469$342, $Ruby30__reduce_470$343, $Ruby30__reduce_471$344, $Ruby30__reduce_472$345, $Ruby30__reduce_473$346, $Ruby30__reduce_474$347, $Ruby30__reduce_475$348, $Ruby30__reduce_476$349, $Ruby30__reduce_477$350, $Ruby30__reduce_478$351, $Ruby30__reduce_479$352, $Ruby30__reduce_480$353, $Ruby30__reduce_481$354, $Ruby30__reduce_482$355, $Ruby30__reduce_483$356, $Ruby30__reduce_484$357, $Ruby30__reduce_485$358, $Ruby30__reduce_486$359, $Ruby30__reduce_487$360, $Ruby30__reduce_488$361, $Ruby30__reduce_489$362, $Ruby30__reduce_490$363, $Ruby30__reduce_492$364, $Ruby30__reduce_493$365, $Ruby30__reduce_494$366, $Ruby30__reduce_495$367, $Ruby30__reduce_496$368, $Ruby30__reduce_497$369, $Ruby30__reduce_498$370, $Ruby30__reduce_499$371, $Ruby30__reduce_500$372, $Ruby30__reduce_502$373, $Ruby30__reduce_503$374, $Ruby30__reduce_504$375, $Ruby30__reduce_505$376, $Ruby30__reduce_506$377, $Ruby30__reduce_507$378, $Ruby30__reduce_508$379, $Ruby30__reduce_509$380, $Ruby30__reduce_510$381, $Ruby30__reduce_511$382, $Ruby30__reduce_512$383, $Ruby30__reduce_513$384, $Ruby30__reduce_514$385, $Ruby30__reduce_518$386, $Ruby30__reduce_519$387, $Ruby30__reduce_520$388, $Ruby30__reduce_521$389, $Ruby30__reduce_525$390, $Ruby30__reduce_526$391, $Ruby30__reduce_535$392, $Ruby30__reduce_537$393, $Ruby30__reduce_538$394, $Ruby30__reduce_539$395, $Ruby30__reduce_540$396, $Ruby30__reduce_541$397, $Ruby30__reduce_542$398, $Ruby30__reduce_543$399, $Ruby30__reduce_544$400, $Ruby30__reduce_547$401, $Ruby30__reduce_549$402, $Ruby30__reduce_553$403, $Ruby30__reduce_554$404, $Ruby30__reduce_555$405, $Ruby30__reduce_556$406, $Ruby30__reduce_557$407, $Ruby30__reduce_558$408, $Ruby30__reduce_559$409, $Ruby30__reduce_560$410, $Ruby30__reduce_561$411, $Ruby30__reduce_562$412, $Ruby30__reduce_563$413, $Ruby30__reduce_564$414, $Ruby30__reduce_565$415, $Ruby30__reduce_566$416, $Ruby30__reduce_567$417, $Ruby30__reduce_568$418, $Ruby30__reduce_569$419, $Ruby30__reduce_570$420, $Ruby30__reduce_571$421, $Ruby30__reduce_572$422, $Ruby30__reduce_573$423, $Ruby30__reduce_574$424, $Ruby30__reduce_575$425, $Ruby30__reduce_576$426, $Ruby30__reduce_577$427, $Ruby30__reduce_578$428, $Ruby30__reduce_579$429, $Ruby30__reduce_580$430, $Ruby30__reduce_581$431, $Ruby30__reduce_582$432, $Ruby30__reduce_583$433, $Ruby30__reduce_584$434, $Ruby30__reduce_585$435, $Ruby30__reduce_586$436, $Ruby30__reduce_587$437, $Ruby30__reduce_591$438, $Ruby30__reduce_592$439, $Ruby30__reduce_593$440, $Ruby30__reduce_594$441, $Ruby30__reduce_595$442, $Ruby30__reduce_596$443, $Ruby30__reduce_597$444, $Ruby30__reduce_598$445, $Ruby30__reduce_599$446, $Ruby30__reduce_600$447, $Ruby30__reduce_601$448, $Ruby30__reduce_602$449, $Ruby30__reduce_603$450, $Ruby30__reduce_604$451, $Ruby30__reduce_605$452, $Ruby30__reduce_606$453, $Ruby30__reduce_607$454, $Ruby30__reduce_608$455, $Ruby30__reduce_609$456, $Ruby30__reduce_610$457, $Ruby30__reduce_611$458, $Ruby30__reduce_612$459, $Ruby30__reduce_613$460, $Ruby30__reduce_614$461, $Ruby30__reduce_615$462, $Ruby30__reduce_616$463, $Ruby30__reduce_617$464, $Ruby30__reduce_618$465, $Ruby30__reduce_619$466, $Ruby30__reduce_621$467, $Ruby30__reduce_622$468, $Ruby30__reduce_623$469, $Ruby30__reduce_624$470, $Ruby30__reduce_626$471, $Ruby30__reduce_627$472, $Ruby30__reduce_628$473, $Ruby30__reduce_629$474, $Ruby30__reduce_630$475, $Ruby30__reduce_631$476, $Ruby30__reduce_632$477, $Ruby30__reduce_633$478, $Ruby30__reduce_634$479, $Ruby30__reduce_635$480, $Ruby30__reduce_636$481, $Ruby30__reduce_637$482, $Ruby30__reduce_638$483, $Ruby30__reduce_639$484, $Ruby30__reduce_640$485, $Ruby30__reduce_641$486, $Ruby30__reduce_642$487, $Ruby30__reduce_643$488, $Ruby30__reduce_644$489, $Ruby30__reduce_645$490, $Ruby30__reduce_646$491, $Ruby30__reduce_647$492, $Ruby30__reduce_648$493, $Ruby30__reduce_649$494, $Ruby30__reduce_650$495, $Ruby30__reduce_651$496, $Ruby30__reduce_652$497, $Ruby30__reduce_653$498, $Ruby30__reduce_655$499, $Ruby30__reduce_656$500, $Ruby30__reduce_657$501, $Ruby30__reduce_658$502, $Ruby30__reduce_659$503, $Ruby30__reduce_660$504, $Ruby30__reduce_661$505, $Ruby30__reduce_662$506, $Ruby30__reduce_663$507, $Ruby30__reduce_664$508, $Ruby30__reduce_665$509, $Ruby30__reduce_666$510, $Ruby30__reduce_667$511, $Ruby30__reduce_668$512, $Ruby30__reduce_669$513, $Ruby30__reduce_672$514, $Ruby30__reduce_673$515, $Ruby30__reduce_674$516, $Ruby30__reduce_675$517, $Ruby30__reduce_676$518, $Ruby30__reduce_677$519, $Ruby30__reduce_678$520, $Ruby30__reduce_679$521, $Ruby30__reduce_680$522, $Ruby30__reduce_683$523, $Ruby30__reduce_684$524, $Ruby30__reduce_687$525, $Ruby30__reduce_688$526, $Ruby30__reduce_689$527, $Ruby30__reduce_691$528, $Ruby30__reduce_692$529, $Ruby30__reduce_694$530, $Ruby30__reduce_695$531, $Ruby30__reduce_696$532, $Ruby30__reduce_697$533, $Ruby30__reduce_698$534, $Ruby30__reduce_699$535, $Ruby30__reduce_712$536, $Ruby30__reduce_713$537, $Ruby30__reduce_718$538, $Ruby30__reduce_719$539, $Ruby30__reduce_720$540, $Ruby30__reduce_724$541, $Ruby30__reduce_728$542, $Ruby30__reduce_none$543, clist = nil, racc_action_table = nil, arr = nil, idx = nil, racc_action_check = nil, racc_action_pointer = nil, racc_action_default = nil, racc_goto_table = nil, racc_goto_check = nil, racc_goto_pointer = nil, racc_goto_default = nil, racc_reduce_table = nil, racc_reduce_n = nil, racc_shift_n = nil, racc_token_table = nil, racc_nt_base = nil, racc_use_result_var = nil;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), clist = nil, racc_action_table = nil, arr = nil, idx = nil, racc_action_check = nil, racc_action_pointer = nil, racc_action_default = nil, racc_goto_table = nil, racc_goto_check = nil, racc_goto_pointer = nil, racc_goto_default = nil, racc_reduce_table = nil, racc_reduce_n = nil, racc_shift_n = nil, racc_token_table = nil, racc_nt_base = nil, racc_use_result_var = nil, $proto = self.$$prototype;
 
-      self.$$prototype.static_env = self.$$prototype.lexer = self.$$prototype.max_numparam_stack = self.$$prototype.context = self.$$prototype.current_arg_stack = self.$$prototype.builder = self.$$prototype.pattern_variables = self.$$prototype.last_token = self.$$prototype.pattern_hash_keys = nil;
+      $proto.static_env = $proto.lexer = $proto.max_numparam_stack = $proto.context = $proto.current_arg_stack = $proto.builder = $proto.pattern_variables = $proto.last_token = $proto.pattern_hash_keys = nil;
       
       
-      Opal.def(self, '$version', $Ruby30_version$1 = function $$version() {
-        var self = this;
-
-        return 30
-      }, $Ruby30_version$1.$$arity = 0);
+      $def(self, '$version', function $$version() {
+        
+        return 31
+      }, 0);
       
-      Opal.def(self, '$default_encoding', $Ruby30_default_encoding$2 = function $$default_encoding() {
-        var self = this;
-
-        return $$$($$($nesting, 'Encoding'), 'UTF_8')
-      }, $Ruby30_default_encoding$2.$$arity = 0);
+      $def(self, '$default_encoding', function $$default_encoding() {
+        
+        return $$$($$('Encoding'), 'UTF_8')
+      }, 0);
       
-      Opal.def(self, '$endless_method_name', $Ruby30_endless_method_name$3 = function $$endless_method_name(name_t) {
-        var self = this, $ret_or_1 = nil;
+      $def(self, '$endless_method_name', function $$endless_method_name(name_t) {
+        var self = this;
 
-        if ($truthy((function() {if ($truthy(($ret_or_1 = ["===", "==", "!=", "<=", ">="]['$include?'](name_t['$[]'](0))['$!']()))) {
-          return name_t['$[]'](0)['$end_with?']("=")
-        } else {
-          return $ret_or_1
-        }; return nil; })())) {
+        if (($not(["===", "==", "!=", "<=", ">="]['$include?'](name_t['$[]'](0))) && ($truthy(name_t['$[]'](0)['$end_with?']("="))))) {
           return self.$diagnostic("error", "endless_setter", nil, name_t)
         } else {
           return nil
         }
-      }, $Ruby30_endless_method_name$3.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$local_push', $Ruby30_local_push$4 = function $$local_push() {
+      $def(self, '$local_push', function $$local_push() {
         var self = this;
 
         
@@ -23079,9 +20201,9 @@ Opal.modules["parser/ruby30"] = function(Opal) {
         self.lexer.$cmdarg().$push(false);
         self.lexer.$cond().$push(false);
         return self.max_numparam_stack.$push($hash2(["static"], {"static": true}));
-      }, $Ruby30_local_push$4.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$local_pop', $Ruby30_local_pop$5 = function $$local_pop() {
+      $def(self, '$local_pop', function $$local_pop() {
         var self = this;
 
         
@@ -23089,35 +20211,26 @@ Opal.modules["parser/ruby30"] = function(Opal) {
         self.lexer.$cmdarg().$pop();
         self.lexer.$cond().$pop();
         return self.max_numparam_stack.$pop();
-      }, $Ruby30_local_pop$5.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$try_declare_numparam', $Ruby30_try_declare_numparam$6 = function $$try_declare_numparam(node) {
-        var $$7, self = this, name = nil, $ret_or_2 = nil, $ret_or_3 = nil, location = nil, raw_max_numparam_stack = nil;
+      $def(self, '$try_declare_numparam', function $$try_declare_numparam(node) {
+        var self = this, name = nil, location = nil, raw_max_numparam_stack = nil;
 
         
         name = node.$children()['$[]'](0);
-        if ($truthy((function() {if ($truthy(($ret_or_2 = (function() {if ($truthy(($ret_or_3 = name['$=~'](/^_[1-9]$/)))) {
-          return self.$static_env()['$declared?'](name)['$!']()
-        } else {
-          return $ret_or_3
-        }; return nil; })()))) {
-          return self.context['$in_dynamic_block?']()
-        } else {
-          return $ret_or_2
-        }; return nil; })())) {
+        if ((($truthy(name['$=~'](/^_[1-9]$/)) && ($not(self.$static_env()['$declared?'](name)))) && ($truthy(self.context['$in_dynamic_block?']())))) {
           
           location = node.$loc().$expression();
           if ($truthy(self.$max_numparam_stack()['$has_ordinary_params?']())) {
-            self.$diagnostic("error", "ordinary_param_defined", nil, [nil, location])};
+            self.$diagnostic("error", "ordinary_param_defined", nil, [nil, location])
+          };
           raw_max_numparam_stack = self.$max_numparam_stack().$stack().$dup();
           raw_max_numparam_stack.$pop();
-          (function(){var $brk = Opal.new_brk(); try {return $send(raw_max_numparam_stack, 'reverse_each', [], ($$7 = function(outer_scope){var self = $$7.$$s == null ? this : $$7.$$s, outer_scope_has_numparams = nil;
+          (function(){var $brk = Opal.new_brk(); try {return $send(raw_max_numparam_stack, 'reverse_each', [], function $$1(outer_scope){var self = $$1.$$s == null ? this : $$1.$$s, outer_scope_has_numparams = nil;
 
             
             
-            if (outer_scope == null) {
-              outer_scope = nil;
-            };
+            if (outer_scope == null) outer_scope = nil;;
             if ($truthy(outer_scope['$[]']("static"))) {
               
               Opal.brk(nil, $brk)
@@ -23129,7 +20242,7 @@ Opal.modules["parser/ruby30"] = function(Opal) {
               } else {
                 return nil
               };
-            };}, $$7.$$s = self, $$7.$$brk = $brk, $$7.$$arity = 1, $$7))
+            };}, {$$arity: 1, $$s: self, $$brk: $brk})
           } catch (err) { if (err === $brk) { return err.$v } else { throw err } }})();
           self.$static_env().$declare(name);
           self.$max_numparam_stack().$register(name['$[]'](1).$to_i());
@@ -23137,131 +20250,107 @@ Opal.modules["parser/ruby30"] = function(Opal) {
         } else {
           return false
         };
-      }, $Ruby30_try_declare_numparam$6.$$arity = 1);
-      clist = ["-707,680,617,1083,870,965,-120,-707,-707,-707,221,222,805,-707,-707", "-606,-707,104,105,870,231,-113,-606,-116,-707,-707,660,1150,658,-716", "866,-119,-118,1153,-114,1078,-707,-707,617,-707,-707,-707,-707,-707", "-112,-119,232,617,617,920,1124,-118,426,1077,624,-117,870,428,427,810", "-117,232,810,-115,-113,-501,-707,-707,-707,-707,-707,-707,-707,-707", "-707,-707,-707,-707,-707,-707,-606,-112,-707,-707,-707,1084,685,-707", "-703,-117,-707,-120,659,-707,657,106,107,-704,-707,232,-707,229,-707", "-707,232,-707,-707,-707,-707,-707,-602,-707,-707,-707,964,-111,126,-602", "-602,-602,126,125,-602,-602,-602,125,-602,-707,-704,-106,-707,-707,-107", "-707,-602,-707,-602,-602,-602,-113,-110,-109,-707,-105,-113,-116,-602", "-602,617,-602,-602,-602,-602,-602,-116,-114,126,-115,-117,954,-120,125", "-112,-119,-108,126,126,-112,-119,-118,125,125,-106,-104,-118,232,-602", "-602,-602,-602,-602,-602,-602,-602,-602,-602,-602,-602,-602,-602,-103", "617,-602,-602,-602,-106,-602,-602,301,852,-602,352,126,-602,-602,479", "-602,125,-602,-120,-602,-716,-602,-602,-120,-602,-602,-602,-602,-602", "-314,-602,1158,-602,301,221,222,-314,-314,-314,920,-703,624,-314,-314", "-106,-314,-602,-106,1159,-602,-602,-602,-602,-314,-602,-716,-602,221", "222,-106,232,-602,949,920,-602,-314,-314,-114,-314,-314,-314,-314,-314", "-120,788,126,221,222,1043,-107,125,-116,-114,366,-115,-117,-116,-114", "301,-115,-117,232,789,1043,300,-314,-314,-314,-314,-314,-314,-314,-314", "-314,-314,-314,-314,-314,-314,301,1043,-314,-314,-314,-611,684,-314", "351,126,-314,300,-611,-314,125,-105,104,105,-314,126,-314,-611,-314", "-314,125,-314,-314,-314,-314,-314,-728,-314,-707,-314,290,-703,-107", "865,679,-707,-707,-707,232,296,-707,-707,-707,-314,-707,126,-314,-314", "1171,-314,125,-314,-707,-707,-707,-707,-707,232,-314,1172,296,-118,300", "-108,-707,-707,-611,-707,-707,-707,-707,-707,-107,-612,1176,-107,-98", "-105,645,-605,-612,645,774,300,1180,645,-605,-107,-84,-612,106,107,-115", "-115,-707,-707,-707,-707,-707,-707,-707,-707,-707,-707,-707,-707,-707", "-707,366,555,-707,-707,-707,645,867,-707,1182,-105,-707,630,-105,-707", "-707,631,-707,1184,-707,555,-707,-108,-707,-707,-105,-707,-707,-707", "-707,-707,-612,-707,-707,-707,647,646,-605,647,646,643,645,647,646,645", "836,1186,645,-707,-110,645,-707,-707,-707,-707,1137,-707,-728,-707,1137", "-314,-119,-108,-707,-614,-108,-116,-314,-314,-314,647,646,-314,-314", "-314,227,-314,-108,1186,-119,838,630,547,-604,-314,895,-314,-314,-314", "876,-604,545,974,-701,872,765,-314,-314,873,-314,-314,-314,-314,-314", "223,647,646,643,647,646,643,647,646,648,647,646,656,852,-613,126,126", "1119,745,-113,125,125,-314,-314,-314,-314,-314,-314,-314,-314,-314,-314", "-314,-314,-314,-314,228,-613,-314,-314,-314,-602,868,-314,-604,1200", "-314,-114,-602,-314,-314,645,-314,-701,-314,1176,-314,-602,-314,-314", "-105,-314,-314,-314,-314,-314,126,-314,220,-314,630,125,-114,-112,895", "582,-701,579,578,577,587,580,680,-314,-103,-607,-314,-314,-314,-314", "590,-314,-607,-314,-704,-707,-112,679,-314,1122,1123,-118,-707,-707", "-707,-703,-602,609,-707,-707,611,-707,585,221,222,647,646,652,-610,-707", "-707,595,594,598,597,-610,949,920,591,-108,90,-707,-707,232,-707,-707", "-707,-707,-707,219,-614,-117,91,582,-106,579,578,577,587,580,-607,645", "92,218,232,135,-115,232,590,1043,1174,-707,-707,-707,-707,-707,-707", "-707,-707,-707,-707,-707,-707,-707,-707,1212,229,-707,-707,-707,585", "685,-707,-610,1186,-707,645,-104,-707,595,594,598,597,-707,1186,-707", "591,-707,-707,-113,-707,-707,-707,-707,-707,-314,-707,-707,-707,890", "891,1186,-314,-314,-314,647,646,661,-314,-314,-608,-314,-707,-111,122", "-707,-707,-608,-107,-314,-707,-609,-602,598,597,-120,576,-707,-609,-602", "-116,-314,-314,1176,-314,-314,-314,-314,-314,1186,647,646,650,582,227", 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-      racc_action_table = (arr = $$$('::', 'Array').$new(28007, nil));
+      }, 1);
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+      racc_action_table = (arr = $$$('Array').$new(28717, nil));
       idx = 0;
-      $send(clist, 'each', [], ($Ruby30$8 = function(str){var self = $Ruby30$8.$$s == null ? this : $Ruby30$8.$$s, $$9;
-
+      $send(clist, 'each', [], function $Ruby31$2(str){
         
         
-        if (str == null) {
-          str = nil;
-        };
-        return $send(str.$split(",", -1), 'each', [], ($$9 = function(i){var self = $$9.$$s == null ? this : $$9.$$s, $writer = nil;
+        if (str == null) str = nil;;
+        return $send(str.$split(",", -1), 'each', [], function $$3(i){var $writer = nil;
 
           
           
-          if (i == null) {
-            i = nil;
-          };
-          if ($truthy(i['$empty?']())) {
-          } else {
+          if (i == null) i = nil;;
+          if (!$truthy(i['$empty?']())) {
             
             $writer = [idx, i.$to_i()];
-            $send(arr, '[]=', Opal.to_a($writer));
+            $send(arr, '[]=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];
           };
-          return (idx = $rb_plus(idx, 1));}, $$9.$$s = self, $$9.$$arity = 1, $$9));}, $Ruby30$8.$$s = self, $Ruby30$8.$$arity = 1, $Ruby30$8));
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-      racc_action_check = (arr = $$$('::', 'Array').$new(28007, nil));
+          return (idx = $rb_plus(idx, 1));}, 1);}, 1);
+      clist = ["464,521,1016,837,1236,838,992,464,464,464,515,515,1053,464,464,289,464", "23,835,631,1087,1058,289,807,464,927,443,137,396,785,3,840,137,137,501", "31,464,464,1089,464,464,464,464,464,1104,1105,1108,384,385,392,850,622", "501,625,1092,932,1092,331,23,928,521,625,331,393,1058,927,464,464,464", "464,464,464,464,464,464,464,464,464,464,464,289,1165,464,464,464,443", "464,464,1200,807,464,1201,839,464,1053,928,840,9,464,31,464,932,464", "464,515,464,464,464,464,464,871,464,837,464,838,992,785,871,871,871", "1016,1202,31,871,871,1016,871,464,631,807,464,464,807,464,871,464,835", "396,1087,835,840,835,464,1087,807,464,871,871,1203,871,871,871,871,871", "1222,622,1089,839,392,850,622,1089,1104,1105,1108,384,385,1104,1105", "1108,384,385,393,981,981,12,871,871,871,871,871,871,871,871,871,871", "871,871,871,871,553,553,871,871,871,69,871,871,1202,1165,871,839,416", "871,1165,1127,1200,735,871,1201,871,1200,871,871,1201,871,871,871,871", 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-      racc_goto_table = (arr = $$$('::', 'Array').$new(4137, nil));
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",,767,767,21,,15,,1108,767,,43,,,,767,767,34,,,,,34,767,767,,,,,,,,", ",,15,15,,43,34,,15,,,,43,,,,34,34,34,,34,769,,,,,21,,,767,769,,,,769", ",,,,405,,,,,,,,,34,,,,15,34,34,21,21,34,,,,21,,,,,768,,,,,,,,,768,,", "769,768,,,,,,,766,,,,,,,,766,,15,,,,,,405,766,766,21,34,,,,769,34,34", "34,34,34,,34,,,,,,768,,,,,,,,,,,,,,,,343,,,,,,,,,,21,343,,,,,768,767", ",,,,,,,,767,,,,767,,,,,,,,43,,,,,43,,,,,,,,,,,43,,,,,,,34,34,34,34,34", "34,34,,,,,,34,767,,,,,34,34,34,34,,,,,,,43,,,,,,,34,,,,,,,,,,767,,,", ",,,,,,,,,,,,,,,,766,,766,,,766,766,,,,,,766,,,,34,,766,766,,,,34,34", ",766,766,,,,,34,,,,,,,,,,,,43,,,,,,34,,,,34,,,,,34,,,43,,,766,,,43,", ",,,,,,,,,,,,,,43,,,,1104,34,,,,,,,,,,,,,,34,34,34,,,,,,,,,,,,,,,,,,", "34,,,,,,,,,,,,,,,43,,,,,,,,,,,,,296,,,,,,,,,,,,,,,,43,43,,,,,43,,,,", ",,,,,,249,,,34,,,,766,,,317,317,317,,,,766,,,,766,,364,365,,367,368", ",370,,296,,,43,,,,,,,,,34,317,317,,,,,,,,34,,,,,,,,,,,,766,,,,,,,,,", ",,,43,,,,,,,,,,,,,,,,,,,766,,,,,,,,,,,,,,,,34,,,,,,,,,,34,,,,,,,,,,", ",,,,,,,,,,,,,,,,,34,,,34,,,,,,,34,,,,,,,,,,34,,,,34,,,,,,,,,,,,,,,,", ",,,,317,447,,,453,317,34,,,34,34,,,34,,,,,453,34,34,,,,34,34,,,,,,249", ",,,,,,529,530,531,532,533,534,535,536,537,538,539,540,541,542,543,544", "545,546,547,548,549,550,,,,,551,,,,,,,,,,,,,,,,,,,,,,,317,317,,,,,,", ",317,,,,,,,317,,317,,,317,317,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,", ",,604,,,,,34,,,,,,,,,,,,,,,,,,,,,,,34,,,,,34,34,,,,,,,,,,34,,,,,,,,", ",,,,,,,,,34,,,,,317,,,,,,,,,,,,34,,,,,,,,,,,,,,,,,,,,,,,692,,,,,,,,", ",,,,,,,,,,,,,,,,,317,,,,,,,,,,,,,723,,34,,,,,,,,317,,453,453,453,,,", ",34,,,,,,,,,,,,34,,,,,,34,,,,,,34,,,,,,,365,,,,,,,,,34,317,,317,,317", ",,,,,,,,,,,,,,,317,,,,,,,,,,453,,,816,,817,,,,,,317,,,317,,,,,,,,,,34", ",,317,317,,,,,,,,,,317,,,,,,,,,,,,,,,34,34,,,,,34,,,,,,,,,,,,317,453", "317,,,,874,,,317,317,453,453,,,,453,453,,,,,,317,,,,,,,,,34,,34,34,", "317,,,,,,,,,,34,,,,,,,,,,,,,,692,723,,,,,,,,,,,,,,34,,,,,,,,,,,,,,,", ",,,,,,,,,,,,,,,,,,,,,,,,,317,,,,,,,,,317,,,317,,,,,,,,,,,,,,,,,,,,,", ",,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,317,,,,,,,,453,,,,,,,,", ",,,,1010,1011,,,,,,,,,,,,,,,,,,,,,,,,,,,,1033,1034,453,453,453,453,", ",,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,1067,,,,,,,,,,,,,,,,,,,,,,,,,", ",,317,,,,,,,,,,,,,,,,,,,317,,,,,,,,,,,,,,,,,,,,,,,,,,453,,,,,,,,,,,", ",,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,", ",,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,317"];
+      racc_goto_table = (arr = $$$('Array').$new(4752, nil));
       idx = 0;
-      $send(clist, 'each', [], ($Ruby30$12 = function(str){var self = $Ruby30$12.$$s == null ? this : $Ruby30$12.$$s, $$13;
-
+      $send(clist, 'each', [], function $Ruby31$6(str){
         
         
-        if (str == null) {
-          str = nil;
-        };
-        return $send(str.$split(",", -1), 'each', [], ($$13 = function(i){var self = $$13.$$s == null ? this : $$13.$$s, $writer = nil;
+        if (str == null) str = nil;;
+        return $send(str.$split(",", -1), 'each', [], function $$7(i){var $writer = nil;
 
           
           
-          if (i == null) {
-            i = nil;
-          };
-          if ($truthy(i['$empty?']())) {
-          } else {
+          if (i == null) i = nil;;
+          if (!$truthy(i['$empty?']())) {
             
             $writer = [idx, i.$to_i()];
-            $send(arr, '[]=', Opal.to_a($writer));
+            $send(arr, '[]=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];
           };
-          return (idx = $rb_plus(idx, 1));}, $$13.$$s = self, $$13.$$arity = 1, $$13));}, $Ruby30$12.$$s = self, $Ruby30$12.$$arity = 1, $Ruby30$12));
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",,,,,,,,,,,,36,,,,,,,,,,,,,,,,,,,,36,,,,,,,,,,,,,,,,,,,,,,,,,,,,36,", ",,,,,,,36,,,,,,,,,,,,,,,,,,,36,36,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,", ",,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,", ",,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,", ",,,,,,,,,,36"];
-      racc_goto_check = (arr = $$$('::', 'Array').$new(4137, nil));
+          return (idx = $rb_plus(idx, 1));}, 1);}, 1);
+      clist = ["72,198,158,91,91,72,75,75,36,36,36,68,46,198,31,230,230,48,107,19,19", "10,75,19,72,34,112,10,128,113,34,12,55,55,82,82,72,72,72,73,117,139", "139,94,33,110,110,11,92,228,228,228,77,77,13,33,135,70,133,22,111,34", "34,34,72,9,44,44,80,17,17,82,82,82,72,72,72,19,19,19,19,239,87,87,56", "56,56,235,8,34,95,20,95,8,20,51,31,32,187,34,34,34,69,41,41,177,177", "58,20,55,117,7,24,24,149,28,26,26,119,57,26,129,72,239,89,89,152,192", "89,28,87,72,231,72,151,225,225,200,200,5,35,35,64,193,2,157,157,34,90", "90,90,127,8,147,130,236,34,145,34,207,161,6,3,10,214,214,29,14,65,178", "178,29,161,16,26,26,26,26,18,178,94,90,90,175,224,224,13,21,66,25,239", "230,176,74,74,27,42,91,36,43,95,95,29,45,202,202,50,52,60,5,8,78,215", "215,215,215,72,83,84,8,86,8,75,93,152,236,105,11,72,106,29,114,151,116", "72,149,198,120,121,122,123,34,124,34,128,125,34,126,128,131,136,72,142", "34,22,22,143,150,22,34,34,112,11,146,66,146,26,26,33,88,88,88,22,73", 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+      racc_goto_check = (arr = $$$('Array').$new(4752, nil));
       idx = 0;
-      $send(clist, 'each', [], ($Ruby30$14 = function(str){var self = $Ruby30$14.$$s == null ? this : $Ruby30$14.$$s, $$15;
-
+      $send(clist, 'each', [], function $Ruby31$8(str){
         
         
-        if (str == null) {
-          str = nil;
-        };
-        return $send(str.$split(",", -1), 'each', [], ($$15 = function(i){var self = $$15.$$s == null ? this : $$15.$$s, $writer = nil;
+        if (str == null) str = nil;;
+        return $send(str.$split(",", -1), 'each', [], function $$9(i){var $writer = nil;
 
           
           
-          if (i == null) {
-            i = nil;
-          };
-          if ($truthy(i['$empty?']())) {
-          } else {
+          if (i == null) i = nil;;
+          if (!$truthy(i['$empty?']())) {
             
             $writer = [idx, i.$to_i()];
-            $send(arr, '[]=', Opal.to_a($writer));
+            $send(arr, '[]=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];
           };
-          return (idx = $rb_plus(idx, 1));}, $$15.$$s = self, $$15.$$arity = 1, $$15));}, $Ruby30$14.$$s = self, $Ruby30$14.$$arity = 1, $Ruby30$14));
-      racc_goto_pointer = [nil, 312, 149, 181, nil, 64, 154, 16, 63, 57, -265, 64, -531, -701, -732, nil, -336, 57, 195, -44, -104, 131, 40, 116, -178, -10, 832, 74, -140, 1226, 1125, -181, 196, -15, 2017, -14, 2981, -320, -33, -33, -2, -405, -15, nil, -14, 16, nil, 69, 191, 122, -289, -16, nil, nil, -202, 125, -250, -382, 471, -293, nil, 2372, 132, 88, 91, 1203, nil, -31, 42, -197, 1505, -2, -345, 124, -9, nil, 39, -205, 654, 53, nil, 152, -18, 178, 1258, 161, -23, 6, -264, 45, 52, -249, -281, -277, -377, nil, 1768, 1747, 1430, 1286, 1817, 2433, 2009, 2394, 206, 163, -58, nil, 732, -280, -739, -380, -609, 156, nil, -171, 20, nil, 84, 169, -133, 177, -392, -580, -160, -801, -268, -428, -783, -693, 145, -663, nil, -654, nil, -519, -142, 256, -762, -652, -189, -766, -684, -592, nil, -670, -812, -895, -908, -150, -569, 177, -376, -232, -21, -696, -695, -318, -19, nil, -28, -26, nil, nil, -452, -778, -668, -913, -523, -831, -662, -653, -565, -661, -686, nil, -577, nil, -577, -405, -403, nil, nil, -582, -404, -404, nil, -629, -873, -950, nil, -770, -769, nil, -76, nil, -639, nil, -528, nil, -459, -746, nil, nil, 227, 223, 228, 228, -218, -241, 228, 236, 245, -289, -282, nil, nil, -268, -158, -224, nil, nil, -184, -600, -310, -672, 128, -401, -716, -649, -930, nil, nil, -481];
-      racc_goto_default = [nil, nil, nil, nil, 5, nil, 6, 389, 324, nil, nil, 563, nil, 948, nil, 321, 322, nil, nil, nil, 13, 14, 20, 239, nil, nil, 16, nil, 439, 240, 353, nil, nil, 634, 238, 474, 23, 997, nil, nil, nil, nil, nil, 384, 143, 52, 24, 53, nil, nil, nil, 25, 26, 27, 757, nil, nil, nil, 341, nil, 28, 338, 453, 35, nil, nil, 37, 40, 39, nil, 235, 236, 401, nil, 461, 142, 87, nil, 444, 103, 49, nil, 54, 273, 313, nil, 919, 454, nil, 455, 466, nil, 683, 524, 311, 297, 55, 56, 57, 58, 59, 60, 61, 62, 63, nil, 298, 69, 70, nil, nil, nil, nil, nil, 77, nil, 616, 78, 363, nil, nil, nil, nil, nil, nil, 782, 583, nil, 783, 784, 571, 565, 566, 1143, 1013, nil, 572, nil, nil, nil, 601, nil, 574, nil, 906, nil, nil, nil, 581, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, 465, nil, nil, 736, 728, nil, nil, nil, nil, nil, nil, nil, nil, nil, 882, nil, 696, 705, 697, 698, nil, nil, 699, 700, nil, nil, nil, 881, 883, nil, 884, 982, 983, 984, 985, nil, 989, 592, 990, 704, 706, nil, nil, 86, 88, 89, nil, nil, nil, nil, 644, nil, nil, nil, nil, nil, 99, 100, nil, 364, 926, 367, 570, 769, 573, 938, 586, 588, 589, 1024, 593, 1025, 596, 599, 316];
-      racc_reduce_table = [0, 0, "racc_error", 0, 150, "_reduce_1", 2, 148, "_reduce_2", 2, 149, "_reduce_3", 0, 151, "_reduce_4", 1, 151, "_reduce_5", 3, 151, "_reduce_6", 2, 151, "_reduce_7", 1, 153, "_reduce_none", 2, 153, "_reduce_9", 3, 156, "_reduce_10", 4, 157, "_reduce_11", 2, 158, "_reduce_12", 0, 162, "_reduce_13", 1, 162, "_reduce_14", 3, 162, "_reduce_15", 2, 162, "_reduce_16", 1, 163, "_reduce_none", 2, 163, "_reduce_18", 0, 174, "_reduce_19", 4, 155, "_reduce_20", 3, 155, "_reduce_21", 3, 155, "_reduce_22", 3, 155, "_reduce_23", 2, 155, "_reduce_24", 3, 155, "_reduce_25", 3, 155, "_reduce_26", 3, 155, "_reduce_27", 3, 155, "_reduce_28", 3, 155, "_reduce_29", 4, 155, "_reduce_30", 1, 155, "_reduce_none", 3, 155, "_reduce_32", 3, 155, "_reduce_33", 5, 155, "_reduce_34", 3, 155, "_reduce_35", 1, 155, "_reduce_none", 3, 167, "_reduce_37", 3, 167, "_reduce_38", 6, 167, "_reduce_39", 5, 167, "_reduce_40", 5, 167, "_reduce_41", 5, 167, "_reduce_42", 5, 167, "_reduce_43", 3, 167, "_reduce_44", 1, 175, "_reduce_none", 3, 175, "_reduce_46", 1, 175, "_reduce_none", 1, 173, "_reduce_none", 3, 173, "_reduce_49", 3, 173, "_reduce_50", 3, 173, "_reduce_51", 2, 173, "_reduce_52", 0, 185, "_reduce_53", 4, 173, "_reduce_54", 0, 186, "_reduce_55", 4, 173, "_reduce_56", 1, 173, "_reduce_none", 1, 166, "_reduce_none", 0, 190, "_reduce_59", 3, 187, "_reduce_60", 1, 189, "_reduce_61", 2, 192, "_reduce_62", 0, 197, "_reduce_63", 5, 194, "_reduce_64", 1, 169, "_reduce_none", 1, 169, "_reduce_none", 1, 199, "_reduce_none", 4, 199, "_reduce_68", 0, 206, "_reduce_69", 4, 203, "_reduce_70", 1, 205, "_reduce_none", 2, 198, "_reduce_72", 3, 198, "_reduce_73", 4, 198, "_reduce_74", 5, 198, "_reduce_75", 4, 198, "_reduce_76", 5, 198, "_reduce_77", 2, 198, "_reduce_78", 2, 198, "_reduce_79", 2, 198, "_reduce_80", 2, 198, "_reduce_81", 2, 198, "_reduce_82", 1, 168, "_reduce_83", 3, 168, "_reduce_84", 1, 211, "_reduce_85", 3, 211, "_reduce_86", 1, 210, "_reduce_none", 2, 210, 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-      racc_reduce_n = 729;
-      racc_shift_n = 1219;
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+      racc_reduce_table = [0, 0, "racc_error", 0, 150, "_reduce_1", 2, 148, "_reduce_2", 2, 149, "_reduce_3", 0, 151, "_reduce_4", 1, 151, "_reduce_5", 3, 151, "_reduce_6", 2, 151, "_reduce_7", 1, 153, "_reduce_none", 2, 153, "_reduce_9", 3, 156, "_reduce_10", 4, 157, "_reduce_11", 2, 158, "_reduce_12", 0, 162, "_reduce_13", 1, 162, "_reduce_14", 3, 162, "_reduce_15", 2, 162, "_reduce_16", 1, 163, "_reduce_none", 2, 163, "_reduce_18", 0, 174, "_reduce_19", 4, 155, "_reduce_20", 3, 155, "_reduce_21", 3, 155, "_reduce_22", 3, 155, "_reduce_23", 2, 155, "_reduce_24", 3, 155, "_reduce_25", 3, 155, "_reduce_26", 3, 155, "_reduce_27", 3, 155, "_reduce_28", 3, 155, "_reduce_29", 4, 155, "_reduce_30", 1, 155, "_reduce_none", 3, 155, "_reduce_32", 3, 155, "_reduce_33", 5, 155, "_reduce_34", 3, 155, "_reduce_35", 1, 155, "_reduce_none", 3, 167, "_reduce_37", 3, 167, "_reduce_38", 6, 167, "_reduce_39", 5, 167, "_reduce_40", 5, 167, "_reduce_41", 5, 167, "_reduce_42", 5, 167, "_reduce_43", 4, 167, "_reduce_44", 6, 167, "_reduce_45", 4, 167, "_reduce_46", 6, 167, "_reduce_47", 3, 167, "_reduce_48", 1, 175, "_reduce_none", 3, 175, "_reduce_50", 1, 175, "_reduce_none", 1, 173, "_reduce_none", 3, 173, "_reduce_53", 3, 173, "_reduce_54", 3, 173, "_reduce_55", 2, 173, "_reduce_56", 0, 189, "_reduce_57", 4, 173, "_reduce_58", 0, 190, "_reduce_59", 4, 173, "_reduce_60", 1, 173, "_reduce_none", 1, 166, "_reduce_none", 0, 194, "_reduce_63", 3, 191, "_reduce_64", 1, 193, "_reduce_65", 2, 181, "_reduce_66", 0, 199, "_reduce_67", 5, 185, "_reduce_68", 1, 169, "_reduce_none", 1, 169, "_reduce_none", 1, 200, "_reduce_none", 4, 200, "_reduce_72", 0, 207, "_reduce_73", 4, 204, "_reduce_74", 1, 206, "_reduce_none", 2, 183, "_reduce_76", 3, 183, "_reduce_77", 4, 183, "_reduce_78", 5, 183, "_reduce_79", 4, 183, "_reduce_80", 5, 183, "_reduce_81", 2, 183, "_reduce_82", 2, 183, "_reduce_83", 2, 183, "_reduce_84", 2, 183, "_reduce_85", 2, 183, "_reduce_86", 1, 168, "_reduce_87", 3, 168, "_reduce_88", 1, 212, "_reduce_89", 3, 212, "_reduce_90", 1, 211, "_reduce_none", 2, 211, "_reduce_92", 3, 211, "_reduce_93", 5, 211, "_reduce_94", 2, 211, "_reduce_95", 4, 211, "_reduce_96", 2, 211, "_reduce_97", 4, 211, "_reduce_98", 1, 211, "_reduce_99", 3, 211, "_reduce_100", 1, 215, "_reduce_none", 3, 215, "_reduce_102", 2, 214, "_reduce_103", 3, 214, "_reduce_104", 1, 217, "_reduce_105", 3, 217, "_reduce_106", 1, 216, "_reduce_107", 1, 216, "_reduce_108", 4, 216, "_reduce_109", 3, 216, "_reduce_110", 3, 216, "_reduce_111", 3, 216, "_reduce_112", 3, 216, "_reduce_113", 2, 216, "_reduce_114", 1, 216, "_reduce_115", 1, 170, "_reduce_116", 1, 170, "_reduce_117", 4, 170, "_reduce_118", 3, 170, "_reduce_119", 3, 170, "_reduce_120", 3, 170, "_reduce_121", 3, 170, "_reduce_122", 2, 170, "_reduce_123", 1, 170, "_reduce_124", 1, 220, "_reduce_125", 1, 220, "_reduce_none", 2, 221, "_reduce_127", 1, 221, "_reduce_128", 3, 221, "_reduce_129", 1, 195, "_reduce_none", 1, 195, "_reduce_none", 1, 195, "_reduce_none", 1, 195, "_reduce_none", 1, 195, "_reduce_none", 1, 164, "_reduce_135", 1, 164, "_reduce_none", 1, 165, "_reduce_137", 0, 225, "_reduce_138", 4, 165, "_reduce_139", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 222, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 1, 223, "_reduce_none", 3, 184, "_reduce_211", 3, 184, "_reduce_212", 6, 184, "_reduce_213", 5, 184, "_reduce_214", 5, 184, "_reduce_215", 5, 184, "_reduce_216", 5, 184, "_reduce_217", 4, 184, "_reduce_218", 3, 184, "_reduce_219", 3, 184, "_reduce_220", 3, 184, "_reduce_221", 2, 184, "_reduce_222", 2, 184, "_reduce_223", 2, 184, "_reduce_224", 2, 184, "_reduce_225", 3, 184, "_reduce_226", 3, 184, "_reduce_227", 3, 184, "_reduce_228", 3, 184, "_reduce_229", 3, 184, "_reduce_230", 3, 184, "_reduce_231", 4, 184, "_reduce_232", 2, 184, "_reduce_233", 2, 184, "_reduce_234", 3, 184, "_reduce_235", 3, 184, "_reduce_236", 3, 184, "_reduce_237", 3, 184, "_reduce_238", 1, 184, "_reduce_none", 3, 184, "_reduce_240", 3, 184, "_reduce_241", 3, 184, "_reduce_242", 3, 184, "_reduce_243", 3, 184, "_reduce_244", 2, 184, "_reduce_245", 2, 184, "_reduce_246", 3, 184, "_reduce_247", 3, 184, "_reduce_248", 3, 184, "_reduce_249", 3, 184, "_reduce_250", 0, 231, "_reduce_251", 4, 184, "_reduce_252", 6, 184, "_reduce_253", 4, 184, "_reduce_254", 6, 184, "_reduce_255", 4, 184, "_reduce_256", 6, 184, "_reduce_257", 1, 184, "_reduce_none", 1, 230, "_reduce_none", 1, 230, "_reduce_none", 1, 230, "_reduce_none", 1, 230, "_reduce_none", 3, 228, "_reduce_263", 3, 228, "_reduce_264", 1, 232, "_reduce_none", 1, 233, "_reduce_none", 2, 233, "_reduce_none", 4, 233, "_reduce_268", 2, 233, "_reduce_269", 1, 226, "_reduce_none", 3, 226, "_reduce_271", 3, 238, "_reduce_272", 5, 238, "_reduce_273", 3, 238, "_reduce_274", 0, 240, "_reduce_275", 1, 240, "_reduce_none", 0, 178, "_reduce_277", 1, 178, "_reduce_none", 2, 178, "_reduce_none", 4, 178, "_reduce_280", 2, 178, "_reduce_281", 1, 210, "_reduce_282", 2, 210, "_reduce_283", 2, 210, "_reduce_284", 4, 210, "_reduce_285", 1, 210, "_reduce_286", 0, 243, "_reduce_287", 2, 203, "_reduce_288", 2, 242, "_reduce_289", 1, 242, "_reduce_290", 2, 241, "_reduce_291", 0, 241, "_reduce_292", 1, 235, "_reduce_293", 2, 235, "_reduce_294", 3, 235, "_reduce_295", 4, 235, "_reduce_296", 1, 172, "_reduce_297", 1, 172, "_reduce_none", 3, 171, "_reduce_299", 4, 171, "_reduce_300", 2, 171, "_reduce_301", 1, 229, "_reduce_none", 1, 229, "_reduce_none", 1, 229, "_reduce_none", 1, 229, "_reduce_none", 1, 229, "_reduce_none", 1, 229, "_reduce_none", 1, 229, "_reduce_none", 1, 229, "_reduce_none", 1, 229, "_reduce_none", 1, 229, "_reduce_none", 1, 229, "_reduce_312", 0, 267, "_reduce_313", 4, 229, "_reduce_314", 0, 268, "_reduce_315", 4, 229, "_reduce_316", 0, 269, "_reduce_317", 4, 229, "_reduce_318", 3, 229, "_reduce_319", 3, 229, "_reduce_320", 2, 229, "_reduce_321", 3, 229, "_reduce_322", 3, 229, "_reduce_323", 1, 229, "_reduce_324", 4, 229, "_reduce_325", 3, 229, "_reduce_326", 1, 229, "_reduce_327", 0, 270, "_reduce_328", 6, 229, "_reduce_329", 4, 229, "_reduce_330", 3, 229, "_reduce_331", 2, 229, "_reduce_332", 1, 229, "_reduce_none", 2, 229, "_reduce_334", 1, 229, "_reduce_none", 6, 229, "_reduce_336", 6, 229, "_reduce_337", 4, 229, "_reduce_338", 4, 229, "_reduce_339", 5, 229, "_reduce_340", 4, 229, "_reduce_341", 5, 229, "_reduce_342", 6, 229, "_reduce_343", 0, 271, "_reduce_344", 6, 229, "_reduce_345", 0, 272, "_reduce_346", 7, 229, "_reduce_347", 0, 273, "_reduce_348", 5, 229, "_reduce_349", 4, 229, "_reduce_350", 4, 229, "_reduce_351", 1, 229, "_reduce_352", 1, 229, "_reduce_353", 1, 229, "_reduce_354", 1, 229, "_reduce_355", 1, 177, "_reduce_none", 1, 262, "_reduce_357", 1, 265, "_reduce_358", 1, 196, "_reduce_359", 1, 209, "_reduce_360", 1, 257, "_reduce_none", 1, 257, "_reduce_none", 2, 257, "_reduce_363", 1, 192, "_reduce_none", 1, 192, "_reduce_none", 1, 258, "_reduce_none", 5, 258, "_reduce_367", 1, 160, "_reduce_none", 2, 160, "_reduce_369", 1, 261, "_reduce_none", 1, 261, "_reduce_none", 1, 274, "_reduce_372", 3, 274, "_reduce_373", 1, 277, "_reduce_374", 3, 277, "_reduce_375", 1, 276, "_reduce_none", 3, 276, "_reduce_377", 5, 276, "_reduce_378", 1, 276, "_reduce_379", 3, 276, "_reduce_380", 2, 278, "_reduce_381", 1, 278, "_reduce_382", 1, 279, "_reduce_none", 1, 279, "_reduce_none", 0, 284, "_reduce_385", 2, 282, "_reduce_386", 4, 283, "_reduce_387", 2, 283, "_reduce_388", 2, 283, "_reduce_389", 1, 283, "_reduce_390", 2, 288, "_reduce_391", 0, 288, "_reduce_392", 1, 289, "_reduce_none", 6, 290, "_reduce_394", 8, 290, "_reduce_395", 4, 290, "_reduce_396", 6, 290, "_reduce_397", 4, 290, "_reduce_398", 2, 290, "_reduce_none", 6, 290, "_reduce_400", 2, 290, "_reduce_401", 4, 290, "_reduce_402", 6, 290, "_reduce_403", 2, 290, "_reduce_404", 4, 290, "_reduce_405", 2, 290, "_reduce_406", 4, 290, "_reduce_407", 1, 290, "_reduce_none", 0, 294, "_reduce_409", 1, 294, "_reduce_410", 3, 295, "_reduce_411", 4, 295, "_reduce_412", 1, 296, "_reduce_413", 4, 296, "_reduce_414", 1, 297, "_reduce_415", 3, 297, "_reduce_416", 1, 298, "_reduce_417", 1, 298, "_reduce_none", 0, 302, "_reduce_419", 0, 303, "_reduce_420", 5, 256, "_reduce_421", 4, 300, "_reduce_422", 1, 300, "_reduce_423", 0, 306, "_reduce_424", 4, 301, "_reduce_425", 0, 307, "_reduce_426", 4, 301, "_reduce_427", 0, 309, "_reduce_428", 4, 305, "_reduce_429", 2, 201, "_reduce_430", 4, 201, "_reduce_431", 5, 201, "_reduce_432", 5, 201, "_reduce_433", 2, 255, "_reduce_434", 4, 255, "_reduce_435", 4, 255, "_reduce_436", 3, 255, "_reduce_437", 3, 255, "_reduce_438", 3, 255, "_reduce_439", 2, 255, "_reduce_440", 1, 255, "_reduce_441", 4, 255, "_reduce_442", 0, 311, "_reduce_443", 4, 254, "_reduce_444", 0, 312, "_reduce_445", 4, 254, "_reduce_446", 0, 313, "_reduce_447", 3, 205, "_reduce_448", 0, 314, "_reduce_449", 0, 315, "_reduce_450", 4, 308, "_reduce_451", 5, 259, "_reduce_452", 1, 316, "_reduce_453", 1, 316, "_reduce_none", 0, 319, "_reduce_455", 0, 320, "_reduce_456", 7, 260, "_reduce_457", 1, 318, "_reduce_458", 1, 318, "_reduce_none", 1, 317, "_reduce_460", 3, 317, "_reduce_461", 3, 317, "_reduce_462", 1, 188, "_reduce_none", 2, 188, "_reduce_464", 3, 188, "_reduce_465", 1, 188, "_reduce_466", 1, 188, "_reduce_467", 1, 188, "_reduce_468", 1, 321, "_reduce_none", 3, 326, "_reduce_470", 1, 326, "_reduce_none", 3, 328, "_reduce_472", 1, 328, "_reduce_none", 1, 330, "_reduce_474", 1, 331, "_reduce_475", 1, 329, "_reduce_none", 1, 329, "_reduce_none", 4, 329, "_reduce_478", 4, 329, "_reduce_479", 4, 329, "_reduce_480", 3, 329, "_reduce_481", 4, 329, "_reduce_482", 4, 329, "_reduce_483", 4, 329, "_reduce_484", 3, 329, "_reduce_485", 3, 329, "_reduce_486", 3, 329, "_reduce_487", 2, 329, "_reduce_488", 0, 335, "_reduce_489", 4, 329, "_reduce_490", 2, 329, "_reduce_491", 0, 336, "_reduce_492", 4, 329, "_reduce_493", 1, 322, "_reduce_494", 1, 322, "_reduce_495", 2, 322, "_reduce_496", 3, 322, "_reduce_497", 5, 322, "_reduce_498", 2, 322, "_reduce_499", 4, 322, "_reduce_500", 1, 322, "_reduce_none", 2, 337, "_reduce_502", 3, 337, "_reduce_503", 1, 324, "_reduce_504", 3, 324, "_reduce_505", 5, 323, "_reduce_506", 2, 340, "_reduce_507", 1, 340, "_reduce_508", 1, 339, "_reduce_509", 3, 339, "_reduce_510", 1, 338, "_reduce_none", 3, 325, "_reduce_512", 1, 325, "_reduce_513", 2, 325, "_reduce_514", 1, 325, "_reduce_515", 1, 341, "_reduce_516", 3, 341, "_reduce_517", 2, 343, "_reduce_518", 1, 343, "_reduce_519", 1, 344, "_reduce_520", 3, 344, "_reduce_521", 2, 346, "_reduce_522", 1, 346, "_reduce_523", 2, 348, "_reduce_524", 1, 342, "_reduce_none", 1, 342, "_reduce_none", 1, 332, "_reduce_none", 3, 332, "_reduce_528", 3, 332, "_reduce_529", 2, 332, "_reduce_530", 2, 332, "_reduce_531", 1, 332, "_reduce_none", 1, 332, "_reduce_none", 1, 332, "_reduce_none", 2, 332, "_reduce_535", 2, 332, "_reduce_536", 1, 349, "_reduce_none", 1, 349, "_reduce_none", 1, 349, "_reduce_none", 1, 349, "_reduce_none", 1, 349, "_reduce_none", 1, 349, "_reduce_none", 1, 349, "_reduce_none", 1, 349, "_reduce_none", 1, 349, "_reduce_545", 1, 349, "_reduce_none", 1, 327, "_reduce_547", 2, 350, "_reduce_548", 2, 350, "_reduce_549", 4, 351, "_reduce_550", 2, 333, "_reduce_551", 3, 333, "_reduce_552", 1, 333, "_reduce_553", 6, 159, "_reduce_554", 0, 159, "_reduce_555", 1, 353, "_reduce_556", 1, 353, "_reduce_none", 1, 353, "_reduce_none", 2, 354, "_reduce_559", 1, 354, "_reduce_none", 2, 161, "_reduce_561", 1, 161, "_reduce_none", 1, 244, "_reduce_none", 1, 244, "_reduce_none", 1, 245, "_reduce_565", 1, 356, "_reduce_566", 2, 356, "_reduce_567", 3, 357, "_reduce_568", 1, 357, "_reduce_569", 1, 357, "_reduce_570", 3, 246, "_reduce_571", 4, 247, "_reduce_572", 3, 248, "_reduce_573", 0, 360, "_reduce_574", 3, 360, "_reduce_575", 1, 361, "_reduce_576", 2, 361, "_reduce_577", 3, 250, "_reduce_578", 0, 363, "_reduce_579", 3, 363, "_reduce_580", 3, 249, "_reduce_581", 3, 251, "_reduce_582", 0, 364, "_reduce_583", 3, 364, "_reduce_584", 0, 365, "_reduce_585", 3, 365, "_reduce_586", 0, 345, "_reduce_587", 2, 345, "_reduce_588", 0, 358, "_reduce_589", 2, 358, "_reduce_590", 0, 359, "_reduce_591", 2, 359, "_reduce_592", 1, 362, "_reduce_593", 2, 362, "_reduce_594", 0, 367, "_reduce_595", 4, 362, "_reduce_596", 1, 366, "_reduce_597", 1, 366, "_reduce_598", 1, 366, "_reduce_599", 1, 366, "_reduce_none", 1, 224, "_reduce_none", 1, 224, "_reduce_none", 1, 368, "_reduce_603", 3, 369, "_reduce_604", 1, 355, "_reduce_605", 2, 355, "_reduce_606", 1, 227, "_reduce_607", 1, 227, "_reduce_608", 1, 227, "_reduce_609", 1, 227, "_reduce_610", 1, 352, "_reduce_611", 1, 352, "_reduce_612", 1, 352, "_reduce_613", 1, 218, "_reduce_614", 1, 218, "_reduce_615", 1, 218, "_reduce_616", 1, 218, "_reduce_617", 1, 218, "_reduce_618", 1, 219, "_reduce_619", 1, 219, "_reduce_620", 1, 219, "_reduce_621", 1, 219, "_reduce_622", 1, 219, "_reduce_623", 1, 219, "_reduce_624", 1, 219, "_reduce_625", 1, 252, "_reduce_626", 1, 252, "_reduce_627", 1, 176, "_reduce_628", 1, 176, "_reduce_629", 1, 186, "_reduce_630", 1, 186, "_reduce_631", 0, 370, "_reduce_632", 4, 263, "_reduce_633", 0, 263, "_reduce_634", 1, 182, "_reduce_none", 1, 182, "_reduce_636", 3, 371, "_reduce_637", 1, 266, "_reduce_none", 0, 373, "_reduce_639", 3, 266, "_reduce_640", 4, 372, "_reduce_641", 2, 372, "_reduce_642", 2, 372, "_reduce_643", 1, 372, "_reduce_644", 1, 372, "_reduce_645", 2, 375, "_reduce_646", 0, 375, "_reduce_647", 6, 304, "_reduce_648", 8, 304, "_reduce_649", 4, 304, "_reduce_650", 6, 304, "_reduce_651", 4, 304, "_reduce_652", 6, 304, "_reduce_653", 2, 304, "_reduce_654", 4, 304, "_reduce_655", 6, 304, "_reduce_656", 2, 304, "_reduce_657", 4, 304, "_reduce_658", 2, 304, "_reduce_659", 4, 304, "_reduce_660", 1, 304, "_reduce_661", 0, 304, "_reduce_662", 1, 239, "_reduce_663", 1, 299, "_reduce_664", 1, 299, "_reduce_665", 1, 299, "_reduce_666", 1, 299, "_reduce_667", 1, 275, "_reduce_none", 1, 275, "_reduce_669", 1, 377, "_reduce_670", 1, 378, "_reduce_671", 3, 378, "_reduce_672", 1, 291, "_reduce_673", 3, 291, "_reduce_674", 1, 379, "_reduce_675", 2, 380, "_reduce_676", 1, 380, "_reduce_677", 2, 381, "_reduce_678", 1, 381, "_reduce_679", 1, 285, "_reduce_680", 3, 285, "_reduce_681", 1, 374, "_reduce_682", 3, 374, "_reduce_683", 1, 347, "_reduce_none", 1, 347, "_reduce_none", 2, 281, "_reduce_686", 2, 280, "_reduce_687", 1, 280, "_reduce_688", 3, 382, "_reduce_689", 3, 383, "_reduce_690", 1, 292, "_reduce_691", 3, 292, "_reduce_692", 1, 376, "_reduce_693", 3, 376, "_reduce_694", 1, 384, "_reduce_none", 1, 384, "_reduce_none", 2, 293, "_reduce_697", 1, 293, "_reduce_698", 1, 385, "_reduce_none", 1, 385, "_reduce_none", 2, 287, "_reduce_701", 1, 287, "_reduce_702", 2, 286, "_reduce_703", 0, 286, "_reduce_704", 1, 197, "_reduce_none", 3, 197, "_reduce_706", 0, 253, "_reduce_707", 2, 253, "_reduce_none", 1, 237, "_reduce_709", 3, 237, "_reduce_710", 3, 386, "_reduce_711", 2, 386, "_reduce_712", 1, 386, "_reduce_713", 4, 386, "_reduce_714", 2, 386, "_reduce_715", 1, 208, "_reduce_none", 1, 208, "_reduce_none", 1, 208, "_reduce_none", 1, 202, "_reduce_none", 1, 202, "_reduce_none", 1, 202, "_reduce_none", 1, 202, "_reduce_none", 1, 310, "_reduce_none", 1, 310, "_reduce_none", 1, 310, "_reduce_none", 1, 198, "_reduce_none", 1, 198, "_reduce_none", 1, 180, "_reduce_728", 1, 180, "_reduce_729", 0, 152, "_reduce_none", 1, 152, "_reduce_none", 0, 187, "_reduce_none", 1, 187, "_reduce_none", 2, 213, "_reduce_734", 2, 179, "_reduce_735", 2, 334, "_reduce_736", 0, 236, "_reduce_none", 1, 236, "_reduce_none", 1, 236, "_reduce_none", 1, 264, "_reduce_740", 1, 264, "_reduce_none", 1, 154, "_reduce_none", 2, 154, "_reduce_none", 0, 234, "_reduce_744"];
+      racc_reduce_n = 745;
+      racc_shift_n = 1238;
       racc_token_table = $hash(false, 0, "error", 1, "kCLASS", 2, "kMODULE", 3, "kDEF", 4, "kUNDEF", 5, "kBEGIN", 6, "kRESCUE", 7, "kENSURE", 8, "kEND", 9, "kIF", 10, "kUNLESS", 11, "kTHEN", 12, "kELSIF", 13, "kELSE", 14, "kCASE", 15, "kWHEN", 16, "kWHILE", 17, "kUNTIL", 18, "kFOR", 19, "kBREAK", 20, "kNEXT", 21, "kREDO", 22, "kRETRY", 23, "kIN", 24, "kDO", 25, "kDO_COND", 26, "kDO_BLOCK", 27, "kDO_LAMBDA", 28, "kRETURN", 29, "kYIELD", 30, "kSUPER", 31, "kSELF", 32, "kNIL", 33, "kTRUE", 34, "kFALSE", 35, "kAND", 36, "kOR", 37, "kNOT", 38, "kIF_MOD", 39, "kUNLESS_MOD", 40, "kWHILE_MOD", 41, "kUNTIL_MOD", 42, "kRESCUE_MOD", 43, "kALIAS", 44, "kDEFINED", 45, "klBEGIN", 46, "klEND", 47, "k__LINE__", 48, "k__FILE__", 49, "k__ENCODING__", 50, "tIDENTIFIER", 51, "tFID", 52, "tGVAR", 53, "tIVAR", 54, "tCONSTANT", 55, "tLABEL", 56, "tCVAR", 57, "tNTH_REF", 58, "tBACK_REF", 59, "tSTRING_CONTENT", 60, "tINTEGER", 61, "tFLOAT", 62, "tUPLUS", 63, "tUMINUS", 64, "tUNARY_NUM", 65, "tPOW", 66, "tCMP", 67, "tEQ", 68, "tEQQ", 69, "tNEQ", 70, "tGEQ", 71, "tLEQ", 72, "tANDOP", 73, "tOROP", 74, "tMATCH", 75, "tNMATCH", 76, "tDOT", 77, "tDOT2", 78, "tDOT3", 79, "tAREF", 80, "tASET", 81, "tLSHFT", 82, "tRSHFT", 83, "tCOLON2", 84, "tCOLON3", 85, "tOP_ASGN", 86, "tASSOC", 87, "tLPAREN", 88, "tLPAREN2", 89, "tRPAREN", 90, "tLPAREN_ARG", 91, "tLBRACK", 92, "tLBRACK2", 93, "tRBRACK", 94, "tLBRACE", 95, "tLBRACE_ARG", 96, "tSTAR", 97, "tSTAR2", 98, "tAMPER", 99, "tAMPER2", 100, "tTILDE", 101, "tPERCENT", 102, "tDIVIDE", 103, "tDSTAR", 104, "tPLUS", 105, "tMINUS", 106, "tLT", 107, "tGT", 108, "tPIPE", 109, "tBANG", 110, "tCARET", 111, "tLCURLY", 112, "tRCURLY", 113, "tBACK_REF2", 114, "tSYMBEG", 115, "tSTRING_BEG", 116, "tXSTRING_BEG", 117, "tREGEXP_BEG", 118, "tREGEXP_OPT", 119, "tWORDS_BEG", 120, "tQWORDS_BEG", 121, "tSYMBOLS_BEG", 122, "tQSYMBOLS_BEG", 123, "tSTRING_DBEG", 124, "tSTRING_DVAR", 125, "tSTRING_END", 126, "tSTRING_DEND", 127, "tSTRING", 128, "tSYMBOL", 129, "tNL", 130, "tEH", 131, "tCOLON", 132, "tCOMMA", 133, "tSPACE", 134, "tSEMI", 135, "tLAMBDA", 136, "tLAMBEG", 137, "tCHARACTER", 138, "tRATIONAL", 139, "tIMAGINARY", 140, "tLABEL_END", 141, "tANDDOT", 142, "tBDOT2", 143, "tBDOT3", 144, "tEQL", 145, "tLOWEST", 146);
       racc_nt_base = 147;
       racc_use_result_var = true;
-      Opal.const_set($nesting[0], 'Racc_arg', [racc_action_table, racc_action_check, racc_action_default, racc_action_pointer, racc_goto_table, racc_goto_check, racc_goto_default, racc_goto_pointer, racc_nt_base, racc_reduce_table, racc_token_table, racc_shift_n, racc_reduce_n, racc_use_result_var]);
-      Opal.const_set($nesting[0], 'Racc_token_to_s_table', ["$end", "error", "kCLASS", "kMODULE", "kDEF", "kUNDEF", "kBEGIN", "kRESCUE", "kENSURE", "kEND", "kIF", "kUNLESS", "kTHEN", "kELSIF", "kELSE", "kCASE", "kWHEN", "kWHILE", "kUNTIL", "kFOR", "kBREAK", "kNEXT", "kREDO", "kRETRY", "kIN", "kDO", "kDO_COND", "kDO_BLOCK", "kDO_LAMBDA", "kRETURN", "kYIELD", "kSUPER", "kSELF", "kNIL", "kTRUE", "kFALSE", "kAND", "kOR", "kNOT", "kIF_MOD", "kUNLESS_MOD", "kWHILE_MOD", "kUNTIL_MOD", "kRESCUE_MOD", "kALIAS", "kDEFINED", "klBEGIN", "klEND", "k__LINE__", "k__FILE__", "k__ENCODING__", "tIDENTIFIER", "tFID", "tGVAR", "tIVAR", "tCONSTANT", "tLABEL", "tCVAR", "tNTH_REF", "tBACK_REF", "tSTRING_CONTENT", "tINTEGER", "tFLOAT", "tUPLUS", "tUMINUS", "tUNARY_NUM", "tPOW", "tCMP", "tEQ", "tEQQ", "tNEQ", "tGEQ", "tLEQ", "tANDOP", "tOROP", "tMATCH", "tNMATCH", "tDOT", "tDOT2", "tDOT3", "tAREF", "tASET", "tLSHFT", "tRSHFT", "tCOLON2", "tCOLON3", "tOP_ASGN", "tASSOC", "tLPAREN", "tLPAREN2", "tRPAREN", "tLPAREN_ARG", "tLBRACK", "tLBRACK2", "tRBRACK", "tLBRACE", "tLBRACE_ARG", "tSTAR", "tSTAR2", "tAMPER", "tAMPER2", "tTILDE", "tPERCENT", "tDIVIDE", "tDSTAR", "tPLUS", "tMINUS", "tLT", "tGT", "tPIPE", "tBANG", "tCARET", "tLCURLY", "tRCURLY", "tBACK_REF2", "tSYMBEG", "tSTRING_BEG", "tXSTRING_BEG", "tREGEXP_BEG", "tREGEXP_OPT", "tWORDS_BEG", "tQWORDS_BEG", "tSYMBOLS_BEG", "tQSYMBOLS_BEG", "tSTRING_DBEG", "tSTRING_DVAR", "tSTRING_END", "tSTRING_DEND", "tSTRING", "tSYMBOL", "tNL", "tEH", "tCOLON", "tCOMMA", "tSPACE", "tSEMI", "tLAMBDA", "tLAMBEG", "tCHARACTER", "tRATIONAL", "tIMAGINARY", "tLABEL_END", "tANDDOT", "tBDOT2", "tBDOT3", "tEQL", "tLOWEST", "$start", "program", "top_compstmt", "@1", "top_stmts", "opt_terms", "top_stmt", "terms", "stmt", "begin_block", "bodystmt", "compstmt", "opt_rescue", "opt_else", "opt_ensure", "stmts", "stmt_or_begin", "fitem", "undef_list", "expr_value", "command_asgn", "mlhs", "command_call", "lhs", "mrhs", "mrhs_arg", "expr", "@2", "command_rhs", "var_lhs", "primary_value", "opt_call_args", "rbracket", "call_op", "backref", "opt_nl", "arg", "p_expr", "@3", "@4", "expr_value_do", "do", "def_name", "@5", "fname", "defn_head", "k_def", "defs_head", "singleton", "dot_or_colon", "@6", "command", "block_command", "block_call", "operation2", "command_args", "cmd_brace_block", "brace_body", "fcall", "@7", "operation", "k_return", "call_args", "mlhs_basic", "mlhs_inner", "rparen", "mlhs_head", "mlhs_item", "mlhs_node", "mlhs_post", "user_variable", "keyword_variable", "cname", "cpath", "op", "reswords", "symbol", "@8", "arg_rhs", "simple_numeric", "rel_expr", "f_opt_paren_args", "primary", "relop", "arg_value", "aref_args", "none", "args", "trailer", "assocs", "paren_args", "args_forward", "opt_paren_args", "opt_block_arg", "block_arg", "@9", "literal", "strings", "xstring", "regexp", "words", "qwords", "symbols", "qsymbols", "var_ref", "assoc_list", "brace_block", "method_call", "lambda", "then", "if_tail", "case_body", "p_case_body", "for_var", "k_class", "superclass", "term", "k_module", "f_arglist", "@10", "@11", "@12", "@13", "@14", "@15", "f_marg", "f_norm_arg", "f_margs", "f_marg_list", "f_rest_marg", "f_any_kwrest", "f_kwrest", "f_no_kwarg", "block_args_tail", "f_block_kwarg", "opt_f_block_arg", "f_block_arg", "opt_block_args_tail", "excessed_comma", "block_param", "f_arg", "f_block_optarg", "f_rest_arg", "opt_block_param", "block_param_def", "opt_bv_decl", "bv_decls", "bvar", "f_bad_arg", "f_larglist", "lambda_body", "@16", "@17", "f_args", "do_block", "@18", "@19", "do_body", "@20", "operation3", "@21", "@22", "@23", "@24", "@25", "cases", "p_top_expr", "p_cases", "@26", "@27", "p_top_expr_body", "p_args", "p_find", "p_args_tail", "p_kwargs", "p_as", "p_variable", "p_alt", "p_expr_basic", "p_lparen", "p_lbracket", "p_value", "p_const", "rbrace", "@28", "@29", "p_args_head", "p_arg", "p_args_post", "p_rest", "p_kwarg", "p_any_kwrest", "p_kw", "p_kw_label", "string_contents", "p_kwrest", "kwrest_mark", "p_kwnorest", "p_primitive", "p_var_ref", "exc_list", "exc_var", "numeric", "string", "string1", "xstring_contents", "regexp_contents", "word_list", "word", "string_content", "symbol_list", "qword_list", "qsym_list", "string_dvar", "@30", "ssym", "dsym", "@31", "f_paren_args", "args_tail", "@32", "f_kwarg", "opt_args_tail", "f_optarg", "f_arg_asgn", "f_arg_item", "f_label", "f_kw", "f_block_kw", "f_opt", "f_block_opt", "restarg_mark", "blkarg_mark", "assoc"]);
-      Opal.const_set($nesting[0], 'Racc_debug_parser', false);
+      $const_set($nesting[0], 'Racc_arg', [racc_action_table, racc_action_check, racc_action_default, racc_action_pointer, racc_goto_table, racc_goto_check, racc_goto_default, racc_goto_pointer, racc_nt_base, racc_reduce_table, racc_token_table, racc_shift_n, racc_reduce_n, racc_use_result_var]);
+      $const_set($nesting[0], 'Racc_token_to_s_table', ["$end", "error", "kCLASS", "kMODULE", "kDEF", "kUNDEF", "kBEGIN", "kRESCUE", "kENSURE", "kEND", "kIF", "kUNLESS", "kTHEN", "kELSIF", "kELSE", "kCASE", "kWHEN", "kWHILE", "kUNTIL", "kFOR", "kBREAK", "kNEXT", "kREDO", "kRETRY", "kIN", "kDO", "kDO_COND", "kDO_BLOCK", "kDO_LAMBDA", "kRETURN", "kYIELD", "kSUPER", "kSELF", "kNIL", "kTRUE", "kFALSE", "kAND", "kOR", "kNOT", "kIF_MOD", "kUNLESS_MOD", "kWHILE_MOD", "kUNTIL_MOD", "kRESCUE_MOD", "kALIAS", "kDEFINED", "klBEGIN", "klEND", "k__LINE__", "k__FILE__", "k__ENCODING__", "tIDENTIFIER", "tFID", "tGVAR", "tIVAR", "tCONSTANT", "tLABEL", "tCVAR", "tNTH_REF", "tBACK_REF", "tSTRING_CONTENT", "tINTEGER", "tFLOAT", "tUPLUS", "tUMINUS", "tUNARY_NUM", "tPOW", "tCMP", "tEQ", "tEQQ", "tNEQ", "tGEQ", "tLEQ", "tANDOP", "tOROP", "tMATCH", "tNMATCH", "tDOT", "tDOT2", "tDOT3", "tAREF", "tASET", "tLSHFT", "tRSHFT", "tCOLON2", "tCOLON3", "tOP_ASGN", "tASSOC", "tLPAREN", "tLPAREN2", "tRPAREN", "tLPAREN_ARG", "tLBRACK", "tLBRACK2", "tRBRACK", "tLBRACE", "tLBRACE_ARG", "tSTAR", "tSTAR2", "tAMPER", "tAMPER2", "tTILDE", "tPERCENT", "tDIVIDE", "tDSTAR", "tPLUS", "tMINUS", "tLT", "tGT", "tPIPE", "tBANG", "tCARET", "tLCURLY", "tRCURLY", "tBACK_REF2", "tSYMBEG", "tSTRING_BEG", "tXSTRING_BEG", "tREGEXP_BEG", "tREGEXP_OPT", "tWORDS_BEG", "tQWORDS_BEG", "tSYMBOLS_BEG", "tQSYMBOLS_BEG", "tSTRING_DBEG", "tSTRING_DVAR", "tSTRING_END", "tSTRING_DEND", "tSTRING", "tSYMBOL", "tNL", "tEH", "tCOLON", "tCOMMA", "tSPACE", "tSEMI", "tLAMBDA", "tLAMBEG", "tCHARACTER", "tRATIONAL", "tIMAGINARY", "tLABEL_END", "tANDDOT", "tBDOT2", "tBDOT3", "tEQL", "tLOWEST", "$start", "program", "top_compstmt", "@1", "top_stmts", "opt_terms", "top_stmt", "terms", "stmt", "begin_block", "bodystmt", "compstmt", "opt_rescue", "opt_else", "opt_ensure", "stmts", "stmt_or_begin", "fitem", "undef_list", "expr_value", "command_asgn", "mlhs", "command_call", "lhs", "mrhs", "mrhs_arg", "expr", "@2", "command_rhs", "var_lhs", "primary_value", "opt_call_args", "rbracket", "call_op", "defn_head", "f_opt_paren_args", "command", "arg", "defs_head", "backref", "opt_nl", "p_top_expr_body", "@3", "@4", "expr_value_do", "do", "def_name", "@5", "fname", "k_def", "singleton", "dot_or_colon", "@6", "block_command", "block_call", "operation2", "command_args", "cmd_brace_block", "brace_body", "fcall", "@7", "operation", "k_return", "call_args", "mlhs_basic", "mlhs_inner", "rparen", "mlhs_head", "mlhs_item", "mlhs_node", "mlhs_post", "user_variable", "keyword_variable", "cname", "cpath", "op", "reswords", "symbol", "@8", "arg_rhs", "simple_numeric", "rel_expr", "primary", "relop", "@9", "arg_value", "aref_args", "none", "args", "trailer", "assocs", "paren_args", "args_forward", "opt_paren_args", "opt_block_arg", "block_arg", "@10", "literal", "strings", "xstring", "regexp", "words", "qwords", "symbols", "qsymbols", "var_ref", "assoc_list", "brace_block", "method_call", "lambda", "then", "if_tail", "case_body", "p_case_body", "for_var", "k_class", "superclass", "term", "k_module", "f_arglist", "@11", "@12", "@13", "@14", "@15", "@16", "@17", "f_marg", "f_norm_arg", "f_margs", "f_marg_list", "f_rest_marg", "f_any_kwrest", "f_kwrest", "f_no_kwarg", "f_eq", "block_args_tail", "@18", "f_block_kwarg", "opt_f_block_arg", "f_block_arg", "opt_block_args_tail", "excessed_comma", "block_param", "f_arg", "f_block_optarg", "f_rest_arg", "opt_block_param", "block_param_def", "opt_bv_decl", "bv_decls", "bvar", "f_bad_arg", "f_larglist", "lambda_body", "@19", "@20", "f_args", "do_block", "@21", "@22", "do_body", "@23", "operation3", "@24", "@25", "@26", "@27", "@28", "cases", "p_top_expr", "p_cases", "@29", "@30", "p_expr", "p_args", "p_find", "p_args_tail", "p_kwargs", "p_as", "p_variable", "p_alt", "p_expr_basic", "p_lparen", "p_lbracket", "p_value", "p_const", "rbrace", "@31", "@32", "p_args_head", "p_arg", "p_args_post", "p_rest", "p_kwarg", "p_any_kwrest", "p_kw", "p_kw_label", "string_contents", "p_kwrest", "kwrest_mark", "p_kwnorest", "p_primitive", "p_var_ref", "p_expr_ref", "nonlocal_var", "exc_list", "exc_var", "numeric", "string", "string1", "xstring_contents", "regexp_contents", "word_list", "word", "string_content", "symbol_list", "qword_list", "qsym_list", "string_dvar", "@33", "ssym", "dsym", "@34", "f_paren_args", "args_tail", "@35", "f_kwarg", "opt_args_tail", "f_optarg", "f_arg_asgn", "f_arg_item", "f_label", "f_kw", "f_block_kw", "f_opt", "f_block_opt", "restarg_mark", "blkarg_mark", "assoc"]);
+      $const_set($nesting[0], 'Racc_debug_parser', false);
       
-      Opal.def(self, '$_reduce_1', $Ruby30__reduce_1$16 = function $$_reduce_1(val, _values, result) {
+      $def(self, '$_reduce_1', function $$_reduce_1(val, _values, result) {
         var self = this;
 
         
         self.current_arg_stack.$push(nil);
         self.max_numparam_stack.$push($hash2(["static"], {"static": true}));
         return result;
-      }, $Ruby30__reduce_1$16.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_2', $Ruby30__reduce_2$17 = function $$_reduce_2(val, _values, result) {
+      $def(self, '$_reduce_2', function $$_reduce_2(val, _values, result) {
         var self = this;
 
         
@@ -23269,246 +20358,234 @@ Opal.modules["parser/ruby30"] = function(Opal) {
         self.current_arg_stack.$pop();
         self.max_numparam_stack.$pop();
         return result;
-      }, $Ruby30__reduce_2$17.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_3', $Ruby30__reduce_3$18 = function $$_reduce_3(val, _values, result) {
+      $def(self, '$_reduce_3', function $$_reduce_3(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$compstmt(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_3$18.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_4', $Ruby30__reduce_4$19 = function $$_reduce_4(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_4', function $$_reduce_4(val, _values, result) {
+        
         
         result = [];
         return result;
-      }, $Ruby30__reduce_4$19.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_5', $Ruby30__reduce_5$20 = function $$_reduce_5(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_5', function $$_reduce_5(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_5$20.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_6', $Ruby30__reduce_6$21 = function $$_reduce_6(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_6', function $$_reduce_6(val, _values, result) {
+        
         
         result = val['$[]'](0)['$<<'](val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_6$21.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_7', $Ruby30__reduce_7$22 = function $$_reduce_7(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_7', function $$_reduce_7(val, _values, result) {
+        
         
         result = [val['$[]'](1)];
         return result;
-      }, $Ruby30__reduce_7$22.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_9', $Ruby30__reduce_9$23 = function $$_reduce_9(val, _values, result) {
+      $def(self, '$_reduce_9', function $$_reduce_9(val, _values, result) {
         var self = this;
 
         
-        result = $send(self.builder, 'preexe', [val['$[]'](0)].concat(Opal.to_a(val['$[]'](1))));
+        result = $send(self.builder, 'preexe', [val['$[]'](0)].concat($to_a(val['$[]'](1))));
         return result;
-      }, $Ruby30__reduce_9$23.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_10', $Ruby30__reduce_10$24 = function $$_reduce_10(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_10', function $$_reduce_10(val, _values, result) {
+        
         
         result = val;
         return result;
-      }, $Ruby30__reduce_10$24.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_11', $Ruby30__reduce_11$25 = function $$_reduce_11(val, _values, result) {
-        var $a, $b, self = this, rescue_bodies = nil, else_t = nil, else_ = nil, ensure_t = nil, ensure_ = nil, $ret_or_4 = nil;
+      $def(self, '$_reduce_11', function $$_reduce_11(val, _values, result) {
+        var $a, $b, self = this, rescue_bodies = nil, else_t = nil, else_ = nil, ensure_t = nil, ensure_ = nil;
 
         
         rescue_bodies = val['$[]'](1);
-        $b = val['$[]'](2), $a = Opal.to_ary($b), (else_t = ($a[0] == null ? nil : $a[0])), (else_ = ($a[1] == null ? nil : $a[1])), $b;
-        $b = val['$[]'](3), $a = Opal.to_ary($b), (ensure_t = ($a[0] == null ? nil : $a[0])), (ensure_ = ($a[1] == null ? nil : $a[1])), $b;
-        if ($truthy((function() {if ($truthy(($ret_or_4 = rescue_bodies['$empty?']()))) {
-          return else_t['$nil?']()['$!']()
-        } else {
-          return $ret_or_4
-        }; return nil; })())) {
-          self.$diagnostic("error", "useless_else", nil, else_t)};
+        $b = val['$[]'](2), $a = $to_ary($b), (else_t = ($a[0] == null ? nil : $a[0])), (else_ = ($a[1] == null ? nil : $a[1])), $b;
+        $b = val['$[]'](3), $a = $to_ary($b), (ensure_t = ($a[0] == null ? nil : $a[0])), (ensure_ = ($a[1] == null ? nil : $a[1])), $b;
+        if (($truthy(rescue_bodies['$empty?']()) && ($not(else_t['$nil?']())))) {
+          self.$diagnostic("error", "useless_else", nil, else_t)
+        };
         result = self.builder.$begin_body(val['$[]'](0), rescue_bodies, else_t, else_, ensure_t, ensure_);
         return result;
-      }, $Ruby30__reduce_11$25.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_12', $Ruby30__reduce_12$26 = function $$_reduce_12(val, _values, result) {
+      $def(self, '$_reduce_12', function $$_reduce_12(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$compstmt(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_12$26.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_13', $Ruby30__reduce_13$27 = function $$_reduce_13(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_13', function $$_reduce_13(val, _values, result) {
+        
         
         result = [];
         return result;
-      }, $Ruby30__reduce_13$27.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_14', $Ruby30__reduce_14$28 = function $$_reduce_14(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_14', function $$_reduce_14(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_14$28.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_15', $Ruby30__reduce_15$29 = function $$_reduce_15(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_15', function $$_reduce_15(val, _values, result) {
+        
         
         result = val['$[]'](0)['$<<'](val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_15$29.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_16', $Ruby30__reduce_16$30 = function $$_reduce_16(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_16', function $$_reduce_16(val, _values, result) {
+        
         
         result = [val['$[]'](1)];
         return result;
-      }, $Ruby30__reduce_16$30.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_18', $Ruby30__reduce_18$31 = function $$_reduce_18(val, _values, result) {
+      $def(self, '$_reduce_18', function $$_reduce_18(val, _values, result) {
         var self = this;
 
         
         self.$diagnostic("error", "begin_in_method", nil, val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_18$31.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_19', $Ruby30__reduce_19$32 = function $$_reduce_19(val, _values, result) {
+      $def(self, '$_reduce_19', function $$_reduce_19(val, _values, result) {
         var self = this, $writer = nil;
 
         
         
         $writer = ["expr_fname"];
-        $send(self.lexer, 'state=', Opal.to_a($writer));
+        $send(self.lexer, 'state=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_19$32.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_20', $Ruby30__reduce_20$33 = function $$_reduce_20(val, _values, result) {
+      $def(self, '$_reduce_20', function $$_reduce_20(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$alias(val['$[]'](0), val['$[]'](1), val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_20$33.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_21', $Ruby30__reduce_21$34 = function $$_reduce_21(val, _values, result) {
+      $def(self, '$_reduce_21', function $$_reduce_21(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$alias(val['$[]'](0), self.builder.$gvar(val['$[]'](1)), self.builder.$gvar(val['$[]'](2)));
         return result;
-      }, $Ruby30__reduce_21$34.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_22', $Ruby30__reduce_22$35 = function $$_reduce_22(val, _values, result) {
+      $def(self, '$_reduce_22', function $$_reduce_22(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$alias(val['$[]'](0), self.builder.$gvar(val['$[]'](1)), self.builder.$back_ref(val['$[]'](2)));
         return result;
-      }, $Ruby30__reduce_22$35.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_23', $Ruby30__reduce_23$36 = function $$_reduce_23(val, _values, result) {
+      $def(self, '$_reduce_23', function $$_reduce_23(val, _values, result) {
         var self = this;
 
         
         self.$diagnostic("error", "nth_ref_alias", nil, val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_23$36.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_24', $Ruby30__reduce_24$37 = function $$_reduce_24(val, _values, result) {
+      $def(self, '$_reduce_24', function $$_reduce_24(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$undef_method(val['$[]'](0), val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_24$37.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_25', $Ruby30__reduce_25$38 = function $$_reduce_25(val, _values, result) {
+      $def(self, '$_reduce_25', function $$_reduce_25(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$condition_mod(val['$[]'](0), nil, val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_25$38.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_26', $Ruby30__reduce_26$39 = function $$_reduce_26(val, _values, result) {
+      $def(self, '$_reduce_26', function $$_reduce_26(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$condition_mod(nil, val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_26$39.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_27', $Ruby30__reduce_27$40 = function $$_reduce_27(val, _values, result) {
+      $def(self, '$_reduce_27', function $$_reduce_27(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$loop_mod("while", val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_27$40.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_28', $Ruby30__reduce_28$41 = function $$_reduce_28(val, _values, result) {
+      $def(self, '$_reduce_28', function $$_reduce_28(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$loop_mod("until", val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_28$41.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_29', $Ruby30__reduce_29$42 = function $$_reduce_29(val, _values, result) {
+      $def(self, '$_reduce_29', function $$_reduce_29(val, _values, result) {
         var self = this, rescue_body = nil;
 
         
         rescue_body = self.builder.$rescue_body(val['$[]'](1), nil, nil, nil, nil, val['$[]'](2));
         result = self.builder.$begin_body(val['$[]'](0), [rescue_body]);
         return result;
-      }, $Ruby30__reduce_29$42.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_30', $Ruby30__reduce_30$43 = function $$_reduce_30(val, _values, result) {
+      $def(self, '$_reduce_30', function $$_reduce_30(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$postexe(val['$[]'](0), val['$[]'](1), val['$[]'](2), val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_30$43.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_32', $Ruby30__reduce_32$44 = function $$_reduce_32(val, _values, result) {
+      $def(self, '$_reduce_32', function $$_reduce_32(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$multi_assign(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_32$44.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_33', $Ruby30__reduce_33$45 = function $$_reduce_33(val, _values, result) {
+      $def(self, '$_reduce_33', function $$_reduce_33(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$assign(val['$[]'](0), val['$[]'](1), self.builder.$array(nil, val['$[]'](2), nil));
         return result;
-      }, $Ruby30__reduce_33$45.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_34', $Ruby30__reduce_34$46 = function $$_reduce_34(val, _values, result) {
+      $def(self, '$_reduce_34', function $$_reduce_34(val, _values, result) {
         var self = this, rescue_body = nil, begin_body = nil;
 
         
@@ -23516,208 +20593,276 @@ Opal.modules["parser/ruby30"] = function(Opal) {
         begin_body = self.builder.$begin_body(val['$[]'](2), [rescue_body]);
         result = self.builder.$multi_assign(val['$[]'](0), val['$[]'](1), begin_body);
         return result;
-      }, $Ruby30__reduce_34$46.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_35', $Ruby30__reduce_35$47 = function $$_reduce_35(val, _values, result) {
+      $def(self, '$_reduce_35', function $$_reduce_35(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$multi_assign(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_35$47.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_37', $Ruby30__reduce_37$48 = function $$_reduce_37(val, _values, result) {
+      $def(self, '$_reduce_37', function $$_reduce_37(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$assign(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_37$48.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_38', $Ruby30__reduce_38$49 = function $$_reduce_38(val, _values, result) {
+      $def(self, '$_reduce_38', function $$_reduce_38(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$op_assign(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_38$49.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_39', $Ruby30__reduce_39$50 = function $$_reduce_39(val, _values, result) {
+      $def(self, '$_reduce_39', function $$_reduce_39(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$op_assign(self.builder.$index(val['$[]'](0), val['$[]'](1), val['$[]'](2), val['$[]'](3)), val['$[]'](4), val['$[]'](5));
         return result;
-      }, $Ruby30__reduce_39$50.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_40', $Ruby30__reduce_40$51 = function $$_reduce_40(val, _values, result) {
+      $def(self, '$_reduce_40', function $$_reduce_40(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$op_assign(self.builder.$call_method(val['$[]'](0), val['$[]'](1), val['$[]'](2)), val['$[]'](3), val['$[]'](4));
         return result;
-      }, $Ruby30__reduce_40$51.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_41', $Ruby30__reduce_41$52 = function $$_reduce_41(val, _values, result) {
+      $def(self, '$_reduce_41', function $$_reduce_41(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$op_assign(self.builder.$call_method(val['$[]'](0), val['$[]'](1), val['$[]'](2)), val['$[]'](3), val['$[]'](4));
         return result;
-      }, $Ruby30__reduce_41$52.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_42', $Ruby30__reduce_42$53 = function $$_reduce_42(val, _values, result) {
+      $def(self, '$_reduce_42', function $$_reduce_42(val, _values, result) {
         var self = this, const$ = nil;
 
         
         const$ = self.builder.$const_op_assignable(self.builder.$const_fetch(val['$[]'](0), val['$[]'](1), val['$[]'](2)));
         result = self.builder.$op_assign(const$, val['$[]'](3), val['$[]'](4));
         return result;
-      }, $Ruby30__reduce_42$53.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_43', $Ruby30__reduce_43$54 = function $$_reduce_43(val, _values, result) {
+      $def(self, '$_reduce_43', function $$_reduce_43(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$op_assign(self.builder.$call_method(val['$[]'](0), val['$[]'](1), val['$[]'](2)), val['$[]'](3), val['$[]'](4));
         return result;
-      }, $Ruby30__reduce_43$54.$$arity = 3);
+      }, 3);
+      
+      $def(self, '$_reduce_44', function $$_reduce_44(val, _values, result) {
+        var $a, $b, $c, self = this, def_t = nil, name_t = nil, ctx = nil, $writer = nil;
+
+        
+        $b = val['$[]'](0), $a = $to_ary($b), (def_t = ($a[0] == null ? nil : $a[0])), ($c = $to_ary(($a[1] == null ? nil : $a[1])), (name_t = ($c[0] == null ? nil : $c[0])), (ctx = ($c[1] == null ? nil : $c[1]))), $b;
+        self.$endless_method_name(name_t);
+        result = self.builder.$def_endless_method(def_t, name_t, val['$[]'](1), val['$[]'](2), val['$[]'](3));
+        self.$local_pop();
+        self.current_arg_stack.$pop();
+        
+        $writer = [ctx.$in_def()];
+        $send(self.context, 'in_def=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
+        return result;
+      }, 3);
+      
+      $def(self, '$_reduce_45', function $$_reduce_45(val, _values, result) {
+        var $a, $b, $c, self = this, def_t = nil, name_t = nil, ctx = nil, rescue_body = nil, method_body = nil, $writer = nil;
+
+        
+        $b = val['$[]'](0), $a = $to_ary($b), (def_t = ($a[0] == null ? nil : $a[0])), ($c = $to_ary(($a[1] == null ? nil : $a[1])), (name_t = ($c[0] == null ? nil : $c[0])), (ctx = ($c[1] == null ? nil : $c[1]))), $b;
+        self.$endless_method_name(name_t);
+        rescue_body = self.builder.$rescue_body(val['$[]'](4), nil, nil, nil, nil, val['$[]'](5));
+        method_body = self.builder.$begin_body(val['$[]'](3), [rescue_body]);
+        result = self.builder.$def_endless_method(def_t, name_t, val['$[]'](1), val['$[]'](2), method_body);
+        self.$local_pop();
+        self.current_arg_stack.$pop();
+        
+        $writer = [ctx.$in_def()];
+        $send(self.context, 'in_def=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
+        return result;
+      }, 3);
+      
+      $def(self, '$_reduce_46', function $$_reduce_46(val, _values, result) {
+        var $a, $b, $c, self = this, def_t = nil, recv = nil, dot_t = nil, name_t = nil, ctx = nil, $writer = nil;
+
+        
+        $b = val['$[]'](0), $a = $to_ary($b), (def_t = ($a[0] == null ? nil : $a[0])), (recv = ($a[1] == null ? nil : $a[1])), (dot_t = ($a[2] == null ? nil : $a[2])), ($c = $to_ary(($a[3] == null ? nil : $a[3])), (name_t = ($c[0] == null ? nil : $c[0])), (ctx = ($c[1] == null ? nil : $c[1]))), $b;
+        self.$endless_method_name(name_t);
+        result = self.builder.$def_endless_singleton(def_t, recv, dot_t, name_t, val['$[]'](1), val['$[]'](2), val['$[]'](3));
+        self.$local_pop();
+        self.current_arg_stack.$pop();
+        
+        $writer = [ctx.$in_def()];
+        $send(self.context, 'in_def=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
+        return result;
+      }, 3);
+      
+      $def(self, '$_reduce_47', function $$_reduce_47(val, _values, result) {
+        var $a, $b, $c, self = this, def_t = nil, recv = nil, dot_t = nil, name_t = nil, ctx = nil, rescue_body = nil, method_body = nil, $writer = nil;
+
+        
+        $b = val['$[]'](0), $a = $to_ary($b), (def_t = ($a[0] == null ? nil : $a[0])), (recv = ($a[1] == null ? nil : $a[1])), (dot_t = ($a[2] == null ? nil : $a[2])), ($c = $to_ary(($a[3] == null ? nil : $a[3])), (name_t = ($c[0] == null ? nil : $c[0])), (ctx = ($c[1] == null ? nil : $c[1]))), $b;
+        self.$endless_method_name(name_t);
+        rescue_body = self.builder.$rescue_body(val['$[]'](4), nil, nil, nil, nil, val['$[]'](5));
+        method_body = self.builder.$begin_body(val['$[]'](3), [rescue_body]);
+        result = self.builder.$def_endless_singleton(def_t, recv, dot_t, name_t, val['$[]'](1), val['$[]'](2), method_body);
+        self.$local_pop();
+        self.current_arg_stack.$pop();
+        
+        $writer = [ctx.$in_def()];
+        $send(self.context, 'in_def=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
+        return result;
+      }, 3);
       
-      Opal.def(self, '$_reduce_44', $Ruby30__reduce_44$55 = function $$_reduce_44(val, _values, result) {
+      $def(self, '$_reduce_48', function $$_reduce_48(val, _values, result) {
         var self = this;
 
         
         self.builder.$op_assign(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_44$55.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_46', $Ruby30__reduce_46$56 = function $$_reduce_46(val, _values, result) {
+      $def(self, '$_reduce_50', function $$_reduce_50(val, _values, result) {
         var self = this, rescue_body = nil;
 
         
         rescue_body = self.builder.$rescue_body(val['$[]'](1), nil, nil, nil, nil, val['$[]'](2));
         result = self.builder.$begin_body(val['$[]'](0), [rescue_body]);
         return result;
-      }, $Ruby30__reduce_46$56.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_49', $Ruby30__reduce_49$57 = function $$_reduce_49(val, _values, result) {
+      $def(self, '$_reduce_53', function $$_reduce_53(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$logical_op("and", val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_49$57.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_50', $Ruby30__reduce_50$58 = function $$_reduce_50(val, _values, result) {
+      $def(self, '$_reduce_54', function $$_reduce_54(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$logical_op("or", val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_50$58.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_51', $Ruby30__reduce_51$59 = function $$_reduce_51(val, _values, result) {
+      $def(self, '$_reduce_55', function $$_reduce_55(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$not_op(val['$[]'](0), nil, val['$[]'](2), nil);
         return result;
-      }, $Ruby30__reduce_51$59.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_52', $Ruby30__reduce_52$60 = function $$_reduce_52(val, _values, result) {
+      $def(self, '$_reduce_56', function $$_reduce_56(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$not_op(val['$[]'](0), nil, val['$[]'](1), nil);
         return result;
-      }, $Ruby30__reduce_52$60.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_53', $Ruby30__reduce_53$61 = function $$_reduce_53(val, _values, result) {
+      $def(self, '$_reduce_57', function $$_reduce_57(val, _values, result) {
         var self = this, $writer = nil;
 
         
         
         $writer = ["expr_beg"];
-        $send(self.lexer, 'state=', Opal.to_a($writer));
+        $send(self.lexer, 'state=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         
         $writer = [false];
-        $send(self.lexer, 'command_start=', Opal.to_a($writer));
+        $send(self.lexer, 'command_start=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         self.pattern_variables.$push();
         result = self.context.$in_kwarg();
         
         $writer = [true];
-        $send(self.context, 'in_kwarg=', Opal.to_a($writer));
+        $send(self.context, 'in_kwarg=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_53$61.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_54', $Ruby30__reduce_54$62 = function $$_reduce_54(val, _values, result) {
+      $def(self, '$_reduce_58', function $$_reduce_58(val, _values, result) {
         var self = this, $writer = nil;
 
         
         self.pattern_variables.$pop();
         
         $writer = [val['$[]'](2)];
-        $send(self.context, 'in_kwarg=', Opal.to_a($writer));
+        $send(self.context, 'in_kwarg=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         result = self.builder.$match_pattern(val['$[]'](0), val['$[]'](1), val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_54$62.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_55', $Ruby30__reduce_55$63 = function $$_reduce_55(val, _values, result) {
+      $def(self, '$_reduce_59', function $$_reduce_59(val, _values, result) {
         var self = this, $writer = nil;
 
         
         
         $writer = ["expr_beg"];
-        $send(self.lexer, 'state=', Opal.to_a($writer));
+        $send(self.lexer, 'state=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         
         $writer = [false];
-        $send(self.lexer, 'command_start=', Opal.to_a($writer));
+        $send(self.lexer, 'command_start=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         self.pattern_variables.$push();
         result = self.context.$in_kwarg();
         
         $writer = [true];
-        $send(self.context, 'in_kwarg=', Opal.to_a($writer));
+        $send(self.context, 'in_kwarg=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_55$63.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_56', $Ruby30__reduce_56$64 = function $$_reduce_56(val, _values, result) {
+      $def(self, '$_reduce_60', function $$_reduce_60(val, _values, result) {
         var self = this, $writer = nil;
 
         
         self.pattern_variables.$pop();
         
         $writer = [val['$[]'](2)];
-        $send(self.context, 'in_kwarg=', Opal.to_a($writer));
+        $send(self.context, 'in_kwarg=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         result = self.builder.$match_pattern_p(val['$[]'](0), val['$[]'](1), val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_56$64.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_59', $Ruby30__reduce_59$65 = function $$_reduce_59(val, _values, result) {
+      $def(self, '$_reduce_63', function $$_reduce_63(val, _values, result) {
         var self = this;
 
         
         self.lexer.$cond().$push(true);
         return result;
-      }, $Ruby30__reduce_59$65.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_60', $Ruby30__reduce_60$66 = function $$_reduce_60(val, _values, result) {
+      $def(self, '$_reduce_64', function $$_reduce_64(val, _values, result) {
         var self = this;
 
         
         self.lexer.$cond().$pop();
         result = [val['$[]'](1), val['$[]'](2)];
         return result;
-      }, $Ruby30__reduce_60$66.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_61', $Ruby30__reduce_61$67 = function $$_reduce_61(val, _values, result) {
+      $def(self, '$_reduce_65', function $$_reduce_65(val, _values, result) {
         var self = this, $writer = nil;
 
         
@@ -23726,1052 +20871,1057 @@ Opal.modules["parser/ruby30"] = function(Opal) {
         result = [val['$[]'](0), self.context.$dup()];
         
         $writer = [true];
-        $send(self.context, 'in_def=', Opal.to_a($writer));
+        $send(self.context, 'in_def=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_61$67.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_62', $Ruby30__reduce_62$68 = function $$_reduce_62(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_66', function $$_reduce_66(val, _values, result) {
+        
         
         result = [val['$[]'](0), val['$[]'](1)];
         return result;
-      }, $Ruby30__reduce_62$68.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_63', $Ruby30__reduce_63$69 = function $$_reduce_63(val, _values, result) {
+      $def(self, '$_reduce_67', function $$_reduce_67(val, _values, result) {
         var self = this, $writer = nil;
 
         
         
         $writer = ["expr_fname"];
-        $send(self.lexer, 'state=', Opal.to_a($writer));
+        $send(self.lexer, 'state=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
+        
+        $writer = [true];
+        $send(self.context, 'in_argdef=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_63$69.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_64', $Ruby30__reduce_64$70 = function $$_reduce_64(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_68', function $$_reduce_68(val, _values, result) {
+        
         
         result = [val['$[]'](0), val['$[]'](1), val['$[]'](2), val['$[]'](4)];
         return result;
-      }, $Ruby30__reduce_64$70.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_68', $Ruby30__reduce_68$71 = function $$_reduce_68(val, _values, result) {
+      $def(self, '$_reduce_72', function $$_reduce_72(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$call_method(val['$[]'](0), val['$[]'](1), val['$[]'](2), nil, val['$[]'](3), nil);
         return result;
-      }, $Ruby30__reduce_68$71.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_69', $Ruby30__reduce_69$72 = function $$_reduce_69(val, _values, result) {
+      $def(self, '$_reduce_73', function $$_reduce_73(val, _values, result) {
         var self = this, $writer = nil;
 
         
         result = self.context.$dup();
         
         $writer = [true];
-        $send(self.context, 'in_block=', Opal.to_a($writer));
+        $send(self.context, 'in_block=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_69$72.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_70', $Ruby30__reduce_70$73 = function $$_reduce_70(val, _values, result) {
+      $def(self, '$_reduce_74', function $$_reduce_74(val, _values, result) {
         var self = this, $writer = nil;
 
         
-        result = [val['$[]'](0)].concat(Opal.to_a(val['$[]'](2))).concat([val['$[]'](3)]);
         
         $writer = [val['$[]'](1).$in_block()];
-        $send(self.context, 'in_block=', Opal.to_a($writer));
+        $send(self.context, 'in_block=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
+        result = [val['$[]'](0)].concat($to_a(val['$[]'](2))).concat([val['$[]'](3)]);
         return result;
-      }, $Ruby30__reduce_70$73.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_72', $Ruby30__reduce_72$74 = function $$_reduce_72(val, _values, result) {
+      $def(self, '$_reduce_76', function $$_reduce_76(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$call_method(nil, nil, val['$[]'](0), nil, val['$[]'](1), nil);
         return result;
-      }, $Ruby30__reduce_72$74.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_73', $Ruby30__reduce_73$75 = function $$_reduce_73(val, _values, result) {
+      $def(self, '$_reduce_77', function $$_reduce_77(val, _values, result) {
         var $a, $b, self = this, method_call = nil, begin_t = nil, args = nil, body = nil, end_t = nil;
 
         
         method_call = self.builder.$call_method(nil, nil, val['$[]'](0), nil, val['$[]'](1), nil);
-        $b = val['$[]'](2), $a = Opal.to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), (end_t = ($a[3] == null ? nil : $a[3])), $b;
+        $b = val['$[]'](2), $a = $to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), (end_t = ($a[3] == null ? nil : $a[3])), $b;
         result = self.builder.$block(method_call, begin_t, args, body, end_t);
         return result;
-      }, $Ruby30__reduce_73$75.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_74', $Ruby30__reduce_74$76 = function $$_reduce_74(val, _values, result) {
+      $def(self, '$_reduce_78', function $$_reduce_78(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$call_method(val['$[]'](0), val['$[]'](1), val['$[]'](2), nil, val['$[]'](3), nil);
         return result;
-      }, $Ruby30__reduce_74$76.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_75', $Ruby30__reduce_75$77 = function $$_reduce_75(val, _values, result) {
+      $def(self, '$_reduce_79', function $$_reduce_79(val, _values, result) {
         var $a, $b, self = this, method_call = nil, begin_t = nil, args = nil, body = nil, end_t = nil;
 
         
         method_call = self.builder.$call_method(val['$[]'](0), val['$[]'](1), val['$[]'](2), nil, val['$[]'](3), nil);
-        $b = val['$[]'](4), $a = Opal.to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), (end_t = ($a[3] == null ? nil : $a[3])), $b;
+        $b = val['$[]'](4), $a = $to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), (end_t = ($a[3] == null ? nil : $a[3])), $b;
         result = self.builder.$block(method_call, begin_t, args, body, end_t);
         return result;
-      }, $Ruby30__reduce_75$77.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_76', $Ruby30__reduce_76$78 = function $$_reduce_76(val, _values, result) {
+      $def(self, '$_reduce_80', function $$_reduce_80(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$call_method(val['$[]'](0), val['$[]'](1), val['$[]'](2), nil, val['$[]'](3), nil);
         return result;
-      }, $Ruby30__reduce_76$78.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_77', $Ruby30__reduce_77$79 = function $$_reduce_77(val, _values, result) {
+      $def(self, '$_reduce_81', function $$_reduce_81(val, _values, result) {
         var $a, $b, self = this, method_call = nil, begin_t = nil, args = nil, body = nil, end_t = nil;
 
         
         method_call = self.builder.$call_method(val['$[]'](0), val['$[]'](1), val['$[]'](2), nil, val['$[]'](3), nil);
-        $b = val['$[]'](4), $a = Opal.to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), (end_t = ($a[3] == null ? nil : $a[3])), $b;
+        $b = val['$[]'](4), $a = $to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), (end_t = ($a[3] == null ? nil : $a[3])), $b;
         result = self.builder.$block(method_call, begin_t, args, body, end_t);
         return result;
-      }, $Ruby30__reduce_77$79.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_78', $Ruby30__reduce_78$80 = function $$_reduce_78(val, _values, result) {
+      $def(self, '$_reduce_82', function $$_reduce_82(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$keyword_cmd("super", val['$[]'](0), nil, val['$[]'](1), nil);
         return result;
-      }, $Ruby30__reduce_78$80.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_79', $Ruby30__reduce_79$81 = function $$_reduce_79(val, _values, result) {
+      $def(self, '$_reduce_83', function $$_reduce_83(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$keyword_cmd("yield", val['$[]'](0), nil, val['$[]'](1), nil);
         return result;
-      }, $Ruby30__reduce_79$81.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_80', $Ruby30__reduce_80$82 = function $$_reduce_80(val, _values, result) {
+      $def(self, '$_reduce_84', function $$_reduce_84(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$keyword_cmd("return", val['$[]'](0), nil, val['$[]'](1), nil);
         return result;
-      }, $Ruby30__reduce_80$82.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_81', $Ruby30__reduce_81$83 = function $$_reduce_81(val, _values, result) {
+      $def(self, '$_reduce_85', function $$_reduce_85(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$keyword_cmd("break", val['$[]'](0), nil, val['$[]'](1), nil);
         return result;
-      }, $Ruby30__reduce_81$83.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_82', $Ruby30__reduce_82$84 = function $$_reduce_82(val, _values, result) {
+      $def(self, '$_reduce_86', function $$_reduce_86(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$keyword_cmd("next", val['$[]'](0), nil, val['$[]'](1), nil);
         return result;
-      }, $Ruby30__reduce_82$84.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_83', $Ruby30__reduce_83$85 = function $$_reduce_83(val, _values, result) {
+      $def(self, '$_reduce_87', function $$_reduce_87(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$multi_lhs(nil, val['$[]'](0), nil);
         return result;
-      }, $Ruby30__reduce_83$85.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_84', $Ruby30__reduce_84$86 = function $$_reduce_84(val, _values, result) {
+      $def(self, '$_reduce_88', function $$_reduce_88(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$begin(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_84$86.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_85', $Ruby30__reduce_85$87 = function $$_reduce_85(val, _values, result) {
+      $def(self, '$_reduce_89', function $$_reduce_89(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$multi_lhs(nil, val['$[]'](0), nil);
         return result;
-      }, $Ruby30__reduce_85$87.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_86', $Ruby30__reduce_86$88 = function $$_reduce_86(val, _values, result) {
+      $def(self, '$_reduce_90', function $$_reduce_90(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$multi_lhs(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_86$88.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_88', $Ruby30__reduce_88$89 = function $$_reduce_88(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_92', function $$_reduce_92(val, _values, result) {
+        
         
         result = val['$[]'](0).$push(val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_88$89.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_89', $Ruby30__reduce_89$90 = function $$_reduce_89(val, _values, result) {
+      $def(self, '$_reduce_93', function $$_reduce_93(val, _values, result) {
         var self = this;
 
         
         result = val['$[]'](0).$push(self.builder.$splat(val['$[]'](1), val['$[]'](2)));
         return result;
-      }, $Ruby30__reduce_89$90.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_90', $Ruby30__reduce_90$91 = function $$_reduce_90(val, _values, result) {
+      $def(self, '$_reduce_94', function $$_reduce_94(val, _values, result) {
         var self = this;
 
         
         result = val['$[]'](0).$push(self.builder.$splat(val['$[]'](1), val['$[]'](2))).$concat(val['$[]'](4));
         return result;
-      }, $Ruby30__reduce_90$91.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_91', $Ruby30__reduce_91$92 = function $$_reduce_91(val, _values, result) {
+      $def(self, '$_reduce_95', function $$_reduce_95(val, _values, result) {
         var self = this;
 
         
         result = val['$[]'](0).$push(self.builder.$splat(val['$[]'](1)));
         return result;
-      }, $Ruby30__reduce_91$92.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_92', $Ruby30__reduce_92$93 = function $$_reduce_92(val, _values, result) {
+      $def(self, '$_reduce_96', function $$_reduce_96(val, _values, result) {
         var self = this;
 
         
         result = val['$[]'](0).$push(self.builder.$splat(val['$[]'](1))).$concat(val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_92$93.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_93', $Ruby30__reduce_93$94 = function $$_reduce_93(val, _values, result) {
+      $def(self, '$_reduce_97', function $$_reduce_97(val, _values, result) {
         var self = this;
 
         
         result = [self.builder.$splat(val['$[]'](0), val['$[]'](1))];
         return result;
-      }, $Ruby30__reduce_93$94.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_94', $Ruby30__reduce_94$95 = function $$_reduce_94(val, _values, result) {
+      $def(self, '$_reduce_98', function $$_reduce_98(val, _values, result) {
         var self = this;
 
         
-        result = [self.builder.$splat(val['$[]'](0), val['$[]'](1))].concat(Opal.to_a(val['$[]'](3)));
+        result = [self.builder.$splat(val['$[]'](0), val['$[]'](1))].concat($to_a(val['$[]'](3)));
         return result;
-      }, $Ruby30__reduce_94$95.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_95', $Ruby30__reduce_95$96 = function $$_reduce_95(val, _values, result) {
+      $def(self, '$_reduce_99', function $$_reduce_99(val, _values, result) {
         var self = this;
 
         
         result = [self.builder.$splat(val['$[]'](0))];
         return result;
-      }, $Ruby30__reduce_95$96.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_96', $Ruby30__reduce_96$97 = function $$_reduce_96(val, _values, result) {
+      $def(self, '$_reduce_100', function $$_reduce_100(val, _values, result) {
         var self = this;
 
         
-        result = [self.builder.$splat(val['$[]'](0))].concat(Opal.to_a(val['$[]'](2)));
+        result = [self.builder.$splat(val['$[]'](0))].concat($to_a(val['$[]'](2)));
         return result;
-      }, $Ruby30__reduce_96$97.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_98', $Ruby30__reduce_98$98 = function $$_reduce_98(val, _values, result) {
+      $def(self, '$_reduce_102', function $$_reduce_102(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$begin(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_98$98.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_99', $Ruby30__reduce_99$99 = function $$_reduce_99(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_103', function $$_reduce_103(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_99$99.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_100', $Ruby30__reduce_100$100 = function $$_reduce_100(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_104', function $$_reduce_104(val, _values, result) {
+        
         
         result = val['$[]'](0)['$<<'](val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_100$100.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_101', $Ruby30__reduce_101$101 = function $$_reduce_101(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_105', function $$_reduce_105(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_101$101.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_102', $Ruby30__reduce_102$102 = function $$_reduce_102(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_106', function $$_reduce_106(val, _values, result) {
+        
         
         result = val['$[]'](0)['$<<'](val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_102$102.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_103', $Ruby30__reduce_103$103 = function $$_reduce_103(val, _values, result) {
+      $def(self, '$_reduce_107', function $$_reduce_107(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$assignable(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_103$103.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_104', $Ruby30__reduce_104$104 = function $$_reduce_104(val, _values, result) {
+      $def(self, '$_reduce_108', function $$_reduce_108(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$assignable(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_104$104.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_105', $Ruby30__reduce_105$105 = function $$_reduce_105(val, _values, result) {
+      $def(self, '$_reduce_109', function $$_reduce_109(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$index_asgn(val['$[]'](0), val['$[]'](1), val['$[]'](2), val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_105$105.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_106', $Ruby30__reduce_106$106 = function $$_reduce_106(val, _values, result) {
+      $def(self, '$_reduce_110', function $$_reduce_110(val, _values, result) {
         var self = this;
 
         
-        if ($truthy(val['$[]'](1)['$[]'](0)['$==']("anddot"))) {
-          self.$diagnostic("error", "csend_in_lhs_of_masgn", nil, val['$[]'](1))};
+        if ($eqeq(val['$[]'](1)['$[]'](0), "anddot")) {
+          self.$diagnostic("error", "csend_in_lhs_of_masgn", nil, val['$[]'](1))
+        };
         result = self.builder.$attr_asgn(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_106$106.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_107', $Ruby30__reduce_107$107 = function $$_reduce_107(val, _values, result) {
+      $def(self, '$_reduce_111', function $$_reduce_111(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$attr_asgn(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_107$107.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_108', $Ruby30__reduce_108$108 = function $$_reduce_108(val, _values, result) {
+      $def(self, '$_reduce_112', function $$_reduce_112(val, _values, result) {
         var self = this;
 
         
-        if ($truthy(val['$[]'](1)['$[]'](0)['$==']("anddot"))) {
-          self.$diagnostic("error", "csend_in_lhs_of_masgn", nil, val['$[]'](1))};
+        if ($eqeq(val['$[]'](1)['$[]'](0), "anddot")) {
+          self.$diagnostic("error", "csend_in_lhs_of_masgn", nil, val['$[]'](1))
+        };
         result = self.builder.$attr_asgn(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_108$108.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_109', $Ruby30__reduce_109$109 = function $$_reduce_109(val, _values, result) {
+      $def(self, '$_reduce_113', function $$_reduce_113(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$assignable(self.builder.$const_fetch(val['$[]'](0), val['$[]'](1), val['$[]'](2)));
         return result;
-      }, $Ruby30__reduce_109$109.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_110', $Ruby30__reduce_110$110 = function $$_reduce_110(val, _values, result) {
+      $def(self, '$_reduce_114', function $$_reduce_114(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$assignable(self.builder.$const_global(val['$[]'](0), val['$[]'](1)));
         return result;
-      }, $Ruby30__reduce_110$110.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_111', $Ruby30__reduce_111$111 = function $$_reduce_111(val, _values, result) {
+      $def(self, '$_reduce_115', function $$_reduce_115(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$assignable(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_111$111.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_112', $Ruby30__reduce_112$112 = function $$_reduce_112(val, _values, result) {
+      $def(self, '$_reduce_116', function $$_reduce_116(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$assignable(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_112$112.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_113', $Ruby30__reduce_113$113 = function $$_reduce_113(val, _values, result) {
+      $def(self, '$_reduce_117', function $$_reduce_117(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$assignable(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_113$113.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_114', $Ruby30__reduce_114$114 = function $$_reduce_114(val, _values, result) {
+      $def(self, '$_reduce_118', function $$_reduce_118(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$index_asgn(val['$[]'](0), val['$[]'](1), val['$[]'](2), val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_114$114.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_115', $Ruby30__reduce_115$115 = function $$_reduce_115(val, _values, result) {
+      $def(self, '$_reduce_119', function $$_reduce_119(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$attr_asgn(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_115$115.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_116', $Ruby30__reduce_116$116 = function $$_reduce_116(val, _values, result) {
+      $def(self, '$_reduce_120', function $$_reduce_120(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$attr_asgn(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_116$116.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_117', $Ruby30__reduce_117$117 = function $$_reduce_117(val, _values, result) {
+      $def(self, '$_reduce_121', function $$_reduce_121(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$attr_asgn(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_117$117.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_118', $Ruby30__reduce_118$118 = function $$_reduce_118(val, _values, result) {
+      $def(self, '$_reduce_122', function $$_reduce_122(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$assignable(self.builder.$const_fetch(val['$[]'](0), val['$[]'](1), val['$[]'](2)));
         return result;
-      }, $Ruby30__reduce_118$118.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_119', $Ruby30__reduce_119$119 = function $$_reduce_119(val, _values, result) {
+      $def(self, '$_reduce_123', function $$_reduce_123(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$assignable(self.builder.$const_global(val['$[]'](0), val['$[]'](1)));
         return result;
-      }, $Ruby30__reduce_119$119.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_120', $Ruby30__reduce_120$120 = function $$_reduce_120(val, _values, result) {
+      $def(self, '$_reduce_124', function $$_reduce_124(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$assignable(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_120$120.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_121', $Ruby30__reduce_121$121 = function $$_reduce_121(val, _values, result) {
+      $def(self, '$_reduce_125', function $$_reduce_125(val, _values, result) {
         var self = this;
 
         
         self.$diagnostic("error", "module_name_const", nil, val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_121$121.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_123', $Ruby30__reduce_123$122 = function $$_reduce_123(val, _values, result) {
+      $def(self, '$_reduce_127', function $$_reduce_127(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$const_global(val['$[]'](0), val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_123$122.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_124', $Ruby30__reduce_124$123 = function $$_reduce_124(val, _values, result) {
+      $def(self, '$_reduce_128', function $$_reduce_128(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$const(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_124$123.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_125', $Ruby30__reduce_125$124 = function $$_reduce_125(val, _values, result) {
+      $def(self, '$_reduce_129', function $$_reduce_129(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$const_fetch(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_125$124.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_131', $Ruby30__reduce_131$125 = function $$_reduce_131(val, _values, result) {
+      $def(self, '$_reduce_135', function $$_reduce_135(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$symbol_internal(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_131$125.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_133', $Ruby30__reduce_133$126 = function $$_reduce_133(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_137', function $$_reduce_137(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_133$126.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_134', $Ruby30__reduce_134$127 = function $$_reduce_134(val, _values, result) {
+      $def(self, '$_reduce_138', function $$_reduce_138(val, _values, result) {
         var self = this, $writer = nil;
 
         
         
         $writer = ["expr_fname"];
-        $send(self.lexer, 'state=', Opal.to_a($writer));
+        $send(self.lexer, 'state=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_134$127.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_135', $Ruby30__reduce_135$128 = function $$_reduce_135(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_139', function $$_reduce_139(val, _values, result) {
+        
         
         result = val['$[]'](0)['$<<'](val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_135$128.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_207', $Ruby30__reduce_207$129 = function $$_reduce_207(val, _values, result) {
+      $def(self, '$_reduce_211', function $$_reduce_211(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$assign(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_207$129.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_208', $Ruby30__reduce_208$130 = function $$_reduce_208(val, _values, result) {
+      $def(self, '$_reduce_212', function $$_reduce_212(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$op_assign(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_208$130.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_209', $Ruby30__reduce_209$131 = function $$_reduce_209(val, _values, result) {
+      $def(self, '$_reduce_213', function $$_reduce_213(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$op_assign(self.builder.$index(val['$[]'](0), val['$[]'](1), val['$[]'](2), val['$[]'](3)), val['$[]'](4), val['$[]'](5));
         return result;
-      }, $Ruby30__reduce_209$131.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_210', $Ruby30__reduce_210$132 = function $$_reduce_210(val, _values, result) {
+      $def(self, '$_reduce_214', function $$_reduce_214(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$op_assign(self.builder.$call_method(val['$[]'](0), val['$[]'](1), val['$[]'](2)), val['$[]'](3), val['$[]'](4));
         return result;
-      }, $Ruby30__reduce_210$132.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_211', $Ruby30__reduce_211$133 = function $$_reduce_211(val, _values, result) {
+      $def(self, '$_reduce_215', function $$_reduce_215(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$op_assign(self.builder.$call_method(val['$[]'](0), val['$[]'](1), val['$[]'](2)), val['$[]'](3), val['$[]'](4));
         return result;
-      }, $Ruby30__reduce_211$133.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_212', $Ruby30__reduce_212$134 = function $$_reduce_212(val, _values, result) {
+      $def(self, '$_reduce_216', function $$_reduce_216(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$op_assign(self.builder.$call_method(val['$[]'](0), val['$[]'](1), val['$[]'](2)), val['$[]'](3), val['$[]'](4));
         return result;
-      }, $Ruby30__reduce_212$134.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_213', $Ruby30__reduce_213$135 = function $$_reduce_213(val, _values, result) {
+      $def(self, '$_reduce_217', function $$_reduce_217(val, _values, result) {
         var self = this, const$ = nil;
 
         
         const$ = self.builder.$const_op_assignable(self.builder.$const_fetch(val['$[]'](0), val['$[]'](1), val['$[]'](2)));
         result = self.builder.$op_assign(const$, val['$[]'](3), val['$[]'](4));
         return result;
-      }, $Ruby30__reduce_213$135.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_214', $Ruby30__reduce_214$136 = function $$_reduce_214(val, _values, result) {
+      $def(self, '$_reduce_218', function $$_reduce_218(val, _values, result) {
         var self = this, const$ = nil;
 
         
         const$ = self.builder.$const_op_assignable(self.builder.$const_global(val['$[]'](0), val['$[]'](1)));
         result = self.builder.$op_assign(const$, val['$[]'](2), val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_214$136.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_215', $Ruby30__reduce_215$137 = function $$_reduce_215(val, _values, result) {
+      $def(self, '$_reduce_219', function $$_reduce_219(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$op_assign(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_215$137.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_216', $Ruby30__reduce_216$138 = function $$_reduce_216(val, _values, result) {
+      $def(self, '$_reduce_220', function $$_reduce_220(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$range_inclusive(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_216$138.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_217', $Ruby30__reduce_217$139 = function $$_reduce_217(val, _values, result) {
+      $def(self, '$_reduce_221', function $$_reduce_221(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$range_exclusive(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_217$139.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_218', $Ruby30__reduce_218$140 = function $$_reduce_218(val, _values, result) {
+      $def(self, '$_reduce_222', function $$_reduce_222(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$range_inclusive(val['$[]'](0), val['$[]'](1), nil);
         return result;
-      }, $Ruby30__reduce_218$140.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_219', $Ruby30__reduce_219$141 = function $$_reduce_219(val, _values, result) {
+      $def(self, '$_reduce_223', function $$_reduce_223(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$range_exclusive(val['$[]'](0), val['$[]'](1), nil);
         return result;
-      }, $Ruby30__reduce_219$141.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_220', $Ruby30__reduce_220$142 = function $$_reduce_220(val, _values, result) {
+      $def(self, '$_reduce_224', function $$_reduce_224(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$range_inclusive(nil, val['$[]'](0), val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_220$142.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_221', $Ruby30__reduce_221$143 = function $$_reduce_221(val, _values, result) {
+      $def(self, '$_reduce_225', function $$_reduce_225(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$range_exclusive(nil, val['$[]'](0), val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_221$143.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_222', $Ruby30__reduce_222$144 = function $$_reduce_222(val, _values, result) {
+      $def(self, '$_reduce_226', function $$_reduce_226(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$binary_op(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_222$144.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_223', $Ruby30__reduce_223$145 = function $$_reduce_223(val, _values, result) {
+      $def(self, '$_reduce_227', function $$_reduce_227(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$binary_op(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_223$145.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_224', $Ruby30__reduce_224$146 = function $$_reduce_224(val, _values, result) {
+      $def(self, '$_reduce_228', function $$_reduce_228(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$binary_op(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_224$146.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_225', $Ruby30__reduce_225$147 = function $$_reduce_225(val, _values, result) {
+      $def(self, '$_reduce_229', function $$_reduce_229(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$binary_op(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_225$147.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_226', $Ruby30__reduce_226$148 = function $$_reduce_226(val, _values, result) {
+      $def(self, '$_reduce_230', function $$_reduce_230(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$binary_op(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_226$148.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_227', $Ruby30__reduce_227$149 = function $$_reduce_227(val, _values, result) {
+      $def(self, '$_reduce_231', function $$_reduce_231(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$binary_op(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_227$149.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_228', $Ruby30__reduce_228$150 = function $$_reduce_228(val, _values, result) {
+      $def(self, '$_reduce_232', function $$_reduce_232(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$unary_op(val['$[]'](0), self.builder.$binary_op(val['$[]'](1), val['$[]'](2), val['$[]'](3)));
         return result;
-      }, $Ruby30__reduce_228$150.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_229', $Ruby30__reduce_229$151 = function $$_reduce_229(val, _values, result) {
+      $def(self, '$_reduce_233', function $$_reduce_233(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$unary_op(val['$[]'](0), val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_229$151.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_230', $Ruby30__reduce_230$152 = function $$_reduce_230(val, _values, result) {
+      $def(self, '$_reduce_234', function $$_reduce_234(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$unary_op(val['$[]'](0), val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_230$152.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_231', $Ruby30__reduce_231$153 = function $$_reduce_231(val, _values, result) {
+      $def(self, '$_reduce_235', function $$_reduce_235(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$binary_op(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_231$153.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_232', $Ruby30__reduce_232$154 = function $$_reduce_232(val, _values, result) {
+      $def(self, '$_reduce_236', function $$_reduce_236(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$binary_op(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_232$154.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_233', $Ruby30__reduce_233$155 = function $$_reduce_233(val, _values, result) {
+      $def(self, '$_reduce_237', function $$_reduce_237(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$binary_op(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_233$155.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_234', $Ruby30__reduce_234$156 = function $$_reduce_234(val, _values, result) {
+      $def(self, '$_reduce_238', function $$_reduce_238(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$binary_op(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_234$156.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_236', $Ruby30__reduce_236$157 = function $$_reduce_236(val, _values, result) {
+      $def(self, '$_reduce_240', function $$_reduce_240(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$binary_op(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_236$157.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_237', $Ruby30__reduce_237$158 = function $$_reduce_237(val, _values, result) {
+      $def(self, '$_reduce_241', function $$_reduce_241(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$binary_op(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_237$158.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_238', $Ruby30__reduce_238$159 = function $$_reduce_238(val, _values, result) {
+      $def(self, '$_reduce_242', function $$_reduce_242(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$binary_op(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_238$159.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_239', $Ruby30__reduce_239$160 = function $$_reduce_239(val, _values, result) {
+      $def(self, '$_reduce_243', function $$_reduce_243(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$match_op(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_239$160.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_240', $Ruby30__reduce_240$161 = function $$_reduce_240(val, _values, result) {
+      $def(self, '$_reduce_244', function $$_reduce_244(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$binary_op(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_240$161.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_241', $Ruby30__reduce_241$162 = function $$_reduce_241(val, _values, result) {
+      $def(self, '$_reduce_245', function $$_reduce_245(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$not_op(val['$[]'](0), nil, val['$[]'](1), nil);
         return result;
-      }, $Ruby30__reduce_241$162.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_242', $Ruby30__reduce_242$163 = function $$_reduce_242(val, _values, result) {
+      $def(self, '$_reduce_246', function $$_reduce_246(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$unary_op(val['$[]'](0), val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_242$163.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_243', $Ruby30__reduce_243$164 = function $$_reduce_243(val, _values, result) {
+      $def(self, '$_reduce_247', function $$_reduce_247(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$binary_op(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_243$164.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_244', $Ruby30__reduce_244$165 = function $$_reduce_244(val, _values, result) {
+      $def(self, '$_reduce_248', function $$_reduce_248(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$binary_op(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_244$165.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_245', $Ruby30__reduce_245$166 = function $$_reduce_245(val, _values, result) {
+      $def(self, '$_reduce_249', function $$_reduce_249(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$logical_op("and", val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_245$166.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_246', $Ruby30__reduce_246$167 = function $$_reduce_246(val, _values, result) {
+      $def(self, '$_reduce_250', function $$_reduce_250(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$logical_op("or", val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_246$167.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_247', $Ruby30__reduce_247$168 = function $$_reduce_247(val, _values, result) {
-        var self = this;
+      $def(self, '$_reduce_251', function $$_reduce_251(val, _values, result) {
+        var self = this, $writer = nil;
+
+        
+        
+        $writer = [true];
+        $send(self.context, 'in_defined=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
+        return result;
+      }, 3);
+      
+      $def(self, '$_reduce_252', function $$_reduce_252(val, _values, result) {
+        var self = this, $writer = nil;
 
         
-        result = self.builder.$keyword_cmd("defined?", val['$[]'](0), nil, [val['$[]'](2)], nil);
+        
+        $writer = [false];
+        $send(self.context, 'in_defined=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
+        result = self.builder.$keyword_cmd("defined?", val['$[]'](0), nil, [val['$[]'](3)], nil);
         return result;
-      }, $Ruby30__reduce_247$168.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_248', $Ruby30__reduce_248$169 = function $$_reduce_248(val, _values, result) {
+      $def(self, '$_reduce_253', function $$_reduce_253(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$ternary(val['$[]'](0), val['$[]'](1), val['$[]'](2), val['$[]'](4), val['$[]'](5));
         return result;
-      }, $Ruby30__reduce_248$169.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_249', $Ruby30__reduce_249$170 = function $$_reduce_249(val, _values, result) {
+      $def(self, '$_reduce_254', function $$_reduce_254(val, _values, result) {
         var $a, $b, $c, self = this, def_t = nil, name_t = nil, ctx = nil, $writer = nil;
 
         
-        $b = val['$[]'](0), $a = Opal.to_ary($b), (def_t = ($a[0] == null ? nil : $a[0])), ($c = Opal.to_ary(($a[1] == null ? nil : $a[1])), (name_t = ($c[0] == null ? nil : $c[0])), (ctx = ($c[1] == null ? nil : $c[1]))), $b;
+        $b = val['$[]'](0), $a = $to_ary($b), (def_t = ($a[0] == null ? nil : $a[0])), ($c = $to_ary(($a[1] == null ? nil : $a[1])), (name_t = ($c[0] == null ? nil : $c[0])), (ctx = ($c[1] == null ? nil : $c[1]))), $b;
         self.$endless_method_name(name_t);
         result = self.builder.$def_endless_method(def_t, name_t, val['$[]'](1), val['$[]'](2), val['$[]'](3));
         self.$local_pop();
+        self.current_arg_stack.$pop();
         
         $writer = [ctx.$in_def()];
-        $send(self.context, 'in_def=', Opal.to_a($writer));
+        $send(self.context, 'in_def=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
-        self.current_arg_stack.$pop();
         return result;
-      }, $Ruby30__reduce_249$170.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_250', $Ruby30__reduce_250$171 = function $$_reduce_250(val, _values, result) {
+      $def(self, '$_reduce_255', function $$_reduce_255(val, _values, result) {
         var $a, $b, $c, self = this, def_t = nil, name_t = nil, ctx = nil, rescue_body = nil, method_body = nil, $writer = nil;
 
         
-        $b = val['$[]'](0), $a = Opal.to_ary($b), (def_t = ($a[0] == null ? nil : $a[0])), ($c = Opal.to_ary(($a[1] == null ? nil : $a[1])), (name_t = ($c[0] == null ? nil : $c[0])), (ctx = ($c[1] == null ? nil : $c[1]))), $b;
+        $b = val['$[]'](0), $a = $to_ary($b), (def_t = ($a[0] == null ? nil : $a[0])), ($c = $to_ary(($a[1] == null ? nil : $a[1])), (name_t = ($c[0] == null ? nil : $c[0])), (ctx = ($c[1] == null ? nil : $c[1]))), $b;
         self.$endless_method_name(name_t);
         rescue_body = self.builder.$rescue_body(val['$[]'](4), nil, nil, nil, nil, val['$[]'](5));
         method_body = self.builder.$begin_body(val['$[]'](3), [rescue_body]);
         result = self.builder.$def_endless_method(def_t, name_t, val['$[]'](1), val['$[]'](2), method_body);
         self.$local_pop();
+        self.current_arg_stack.$pop();
         
         $writer = [ctx.$in_def()];
-        $send(self.context, 'in_def=', Opal.to_a($writer));
+        $send(self.context, 'in_def=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
-        self.current_arg_stack.$pop();
         return result;
-      }, $Ruby30__reduce_250$171.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_251', $Ruby30__reduce_251$172 = function $$_reduce_251(val, _values, result) {
+      $def(self, '$_reduce_256', function $$_reduce_256(val, _values, result) {
         var $a, $b, $c, self = this, def_t = nil, recv = nil, dot_t = nil, name_t = nil, ctx = nil, $writer = nil;
 
         
-        $b = val['$[]'](0), $a = Opal.to_ary($b), (def_t = ($a[0] == null ? nil : $a[0])), (recv = ($a[1] == null ? nil : $a[1])), (dot_t = ($a[2] == null ? nil : $a[2])), ($c = Opal.to_ary(($a[3] == null ? nil : $a[3])), (name_t = ($c[0] == null ? nil : $c[0])), (ctx = ($c[1] == null ? nil : $c[1]))), $b;
+        $b = val['$[]'](0), $a = $to_ary($b), (def_t = ($a[0] == null ? nil : $a[0])), (recv = ($a[1] == null ? nil : $a[1])), (dot_t = ($a[2] == null ? nil : $a[2])), ($c = $to_ary(($a[3] == null ? nil : $a[3])), (name_t = ($c[0] == null ? nil : $c[0])), (ctx = ($c[1] == null ? nil : $c[1]))), $b;
         self.$endless_method_name(name_t);
         result = self.builder.$def_endless_singleton(def_t, recv, dot_t, name_t, val['$[]'](1), val['$[]'](2), val['$[]'](3));
         self.$local_pop();
+        self.current_arg_stack.$pop();
         
         $writer = [ctx.$in_def()];
-        $send(self.context, 'in_def=', Opal.to_a($writer));
+        $send(self.context, 'in_def=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
-        self.current_arg_stack.$pop();
         return result;
-      }, $Ruby30__reduce_251$172.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_252', $Ruby30__reduce_252$173 = function $$_reduce_252(val, _values, result) {
+      $def(self, '$_reduce_257', function $$_reduce_257(val, _values, result) {
         var $a, $b, $c, self = this, def_t = nil, recv = nil, dot_t = nil, name_t = nil, ctx = nil, rescue_body = nil, method_body = nil, $writer = nil;
 
         
-        $b = val['$[]'](0), $a = Opal.to_ary($b), (def_t = ($a[0] == null ? nil : $a[0])), (recv = ($a[1] == null ? nil : $a[1])), (dot_t = ($a[2] == null ? nil : $a[2])), ($c = Opal.to_ary(($a[3] == null ? nil : $a[3])), (name_t = ($c[0] == null ? nil : $c[0])), (ctx = ($c[1] == null ? nil : $c[1]))), $b;
+        $b = val['$[]'](0), $a = $to_ary($b), (def_t = ($a[0] == null ? nil : $a[0])), (recv = ($a[1] == null ? nil : $a[1])), (dot_t = ($a[2] == null ? nil : $a[2])), ($c = $to_ary(($a[3] == null ? nil : $a[3])), (name_t = ($c[0] == null ? nil : $c[0])), (ctx = ($c[1] == null ? nil : $c[1]))), $b;
         self.$endless_method_name(name_t);
         rescue_body = self.builder.$rescue_body(val['$[]'](4), nil, nil, nil, nil, val['$[]'](5));
         method_body = self.builder.$begin_body(val['$[]'](3), [rescue_body]);
         result = self.builder.$def_endless_singleton(def_t, recv, dot_t, name_t, val['$[]'](1), val['$[]'](2), method_body);
         self.$local_pop();
+        self.current_arg_stack.$pop();
         
         $writer = [ctx.$in_def()];
-        $send(self.context, 'in_def=', Opal.to_a($writer));
+        $send(self.context, 'in_def=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
-        self.current_arg_stack.$pop();
         return result;
-      }, $Ruby30__reduce_252$173.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_258', $Ruby30__reduce_258$174 = function $$_reduce_258(val, _values, result) {
+      $def(self, '$_reduce_263', function $$_reduce_263(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$binary_op(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_258$174.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_259', $Ruby30__reduce_259$175 = function $$_reduce_259(val, _values, result) {
+      $def(self, '$_reduce_264', function $$_reduce_264(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$binary_op(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_259$175.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_263', $Ruby30__reduce_263$176 = function $$_reduce_263(val, _values, result) {
+      $def(self, '$_reduce_268', function $$_reduce_268(val, _values, result) {
         var self = this;
 
         
         result = val['$[]'](0)['$<<'](self.builder.$associate(nil, val['$[]'](2), nil));
         return result;
-      }, $Ruby30__reduce_263$176.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_264', $Ruby30__reduce_264$177 = function $$_reduce_264(val, _values, result) {
+      $def(self, '$_reduce_269', function $$_reduce_269(val, _values, result) {
         var self = this;
 
         
         result = [self.builder.$associate(nil, val['$[]'](0), nil)];
         return result;
-      }, $Ruby30__reduce_264$177.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_266', $Ruby30__reduce_266$178 = function $$_reduce_266(val, _values, result) {
+      $def(self, '$_reduce_271', function $$_reduce_271(val, _values, result) {
         var self = this, rescue_body = nil;
 
         
         rescue_body = self.builder.$rescue_body(val['$[]'](1), nil, nil, nil, nil, val['$[]'](2));
         result = self.builder.$begin_body(val['$[]'](0), [rescue_body]);
         return result;
-      }, $Ruby30__reduce_266$178.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_267', $Ruby30__reduce_267$179 = function $$_reduce_267(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_272', function $$_reduce_272(val, _values, result) {
+        
         
         result = val;
         return result;
-      }, $Ruby30__reduce_267$179.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_268', $Ruby30__reduce_268$180 = function $$_reduce_268(val, _values, result) {
+      $def(self, '$_reduce_273', function $$_reduce_273(val, _values, result) {
         var self = this;
 
         
-        if ($truthy(self.static_env['$declared_forward_args?']())) {
-        } else {
+        if (!$truthy(self.static_env['$declared_forward_args?']())) {
           self.$diagnostic("error", "unexpected_token", $hash2(["token"], {"token": "tBDOT3"}), val['$[]'](3))
         };
-        result = [val['$[]'](0), [].concat(Opal.to_a(val['$[]'](1))).concat([self.builder.$forwarded_args(val['$[]'](3))]), val['$[]'](4)];
+        result = [val['$[]'](0), [].concat($to_a(val['$[]'](1))).concat([self.builder.$forwarded_args(val['$[]'](3))]), val['$[]'](4)];
         return result;
-      }, $Ruby30__reduce_268$180.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_269', $Ruby30__reduce_269$181 = function $$_reduce_269(val, _values, result) {
+      $def(self, '$_reduce_274', function $$_reduce_274(val, _values, result) {
         var self = this;
 
         
-        if ($truthy(self.static_env['$declared_forward_args?']())) {
-        } else {
+        if (!$truthy(self.static_env['$declared_forward_args?']())) {
           self.$diagnostic("error", "unexpected_token", $hash2(["token"], {"token": "tBDOT3"}), val['$[]'](1))
         };
         result = [val['$[]'](0), [self.builder.$forwarded_args(val['$[]'](1))], val['$[]'](2)];
         return result;
-      }, $Ruby30__reduce_269$181.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_270', $Ruby30__reduce_270$182 = function $$_reduce_270(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_275', function $$_reduce_275(val, _values, result) {
+        
         
         result = [nil, [], nil];
         return result;
-      }, $Ruby30__reduce_270$182.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_272', $Ruby30__reduce_272$183 = function $$_reduce_272(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_277', function $$_reduce_277(val, _values, result) {
+        
         
         result = [];
         return result;
-      }, $Ruby30__reduce_272$183.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_275', $Ruby30__reduce_275$184 = function $$_reduce_275(val, _values, result) {
+      $def(self, '$_reduce_280', function $$_reduce_280(val, _values, result) {
         var self = this;
 
         
         result = val['$[]'](0)['$<<'](self.builder.$associate(nil, val['$[]'](2), nil));
         return result;
-      }, $Ruby30__reduce_275$184.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_276', $Ruby30__reduce_276$185 = function $$_reduce_276(val, _values, result) {
+      $def(self, '$_reduce_281', function $$_reduce_281(val, _values, result) {
         var self = this;
 
         
         result = [self.builder.$associate(nil, val['$[]'](0), nil)];
         return result;
-      }, $Ruby30__reduce_276$185.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_277', $Ruby30__reduce_277$186 = function $$_reduce_277(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_282', function $$_reduce_282(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_277$186.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_278', $Ruby30__reduce_278$187 = function $$_reduce_278(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_283', function $$_reduce_283(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_278$187.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_279', $Ruby30__reduce_279$188 = function $$_reduce_279(val, _values, result) {
+      $def(self, '$_reduce_284', function $$_reduce_284(val, _values, result) {
         var self = this;
 
         
         result = [self.builder.$associate(nil, val['$[]'](0), nil)];
         result.$concat(val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_279$188.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_280', $Ruby30__reduce_280$189 = function $$_reduce_280(val, _values, result) {
+      $def(self, '$_reduce_285', function $$_reduce_285(val, _values, result) {
         var self = this, assocs = nil;
 
         
@@ -24779,26 +21929,21 @@ Opal.modules["parser/ruby30"] = function(Opal) {
         result = val['$[]'](0)['$<<'](assocs);
         result.$concat(val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_280$189.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_281', $Ruby30__reduce_281$190 = function $$_reduce_281(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_286', function $$_reduce_286(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_281$190.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_282', $Ruby30__reduce_282$191 = function $$_reduce_282(val, _values, result) {
-        var self = this, last_token = nil, lookahead = nil, $ret_or_5 = nil, top = nil;
+      $def(self, '$_reduce_287', function $$_reduce_287(val, _values, result) {
+        var self = this, last_token = nil, lookahead = nil, $ret_or_1 = nil, top = nil;
 
         
         last_token = self.last_token['$[]'](0);
-        lookahead = (function() {if ($truthy(($ret_or_5 = last_token['$==']("tLBRACK")))) {
-          return $ret_or_5
-        } else {
-          return last_token['$==']("tLPAREN_ARG")
-        }; return nil; })();
+        lookahead = ($truthy(($ret_or_1 = last_token['$==']("tLBRACK"))) ? ($ret_or_1) : (last_token['$==']("tLPAREN_ARG")));
         if ($truthy(lookahead)) {
           
           top = self.lexer.$cmdarg().$pop();
@@ -24808,9 +21953,9 @@ Opal.modules["parser/ruby30"] = function(Opal) {
           self.lexer.$cmdarg().$push(true)
         };
         return result;
-      }, $Ruby30__reduce_282$191.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_283', $Ruby30__reduce_283$192 = function $$_reduce_283(val, _values, result) {
+      $def(self, '$_reduce_288', function $$_reduce_288(val, _values, result) {
         var self = this, last_token = nil, lookahead = nil, top = nil;
 
         
@@ -24826,887 +21971,895 @@ Opal.modules["parser/ruby30"] = function(Opal) {
         };
         result = val['$[]'](1);
         return result;
-      }, $Ruby30__reduce_283$192.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_284', $Ruby30__reduce_284$193 = function $$_reduce_284(val, _values, result) {
+      $def(self, '$_reduce_289', function $$_reduce_289(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$block_pass(val['$[]'](0), val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_284$193.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_285', $Ruby30__reduce_285$194 = function $$_reduce_285(val, _values, result) {
+      $def(self, '$_reduce_290', function $$_reduce_290(val, _values, result) {
         var self = this;
 
         
+        if ($not(self.static_env['$declared_anonymous_blockarg?']())) {
+          self.$diagnostic("error", "no_anonymous_blockarg", nil, val['$[]'](0))
+        };
+        result = self.builder.$block_pass(val['$[]'](0), nil);
+        return result;
+      }, 3);
+      
+      $def(self, '$_reduce_291', function $$_reduce_291(val, _values, result) {
+        
+        
         result = [val['$[]'](1)];
         return result;
-      }, $Ruby30__reduce_285$194.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_286', $Ruby30__reduce_286$195 = function $$_reduce_286(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_292', function $$_reduce_292(val, _values, result) {
+        
         
         result = [];
         return result;
-      }, $Ruby30__reduce_286$195.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_287', $Ruby30__reduce_287$196 = function $$_reduce_287(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_293', function $$_reduce_293(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_287$196.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_288', $Ruby30__reduce_288$197 = function $$_reduce_288(val, _values, result) {
+      $def(self, '$_reduce_294', function $$_reduce_294(val, _values, result) {
         var self = this;
 
         
         result = [self.builder.$splat(val['$[]'](0), val['$[]'](1))];
         return result;
-      }, $Ruby30__reduce_288$197.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_289', $Ruby30__reduce_289$198 = function $$_reduce_289(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_295', function $$_reduce_295(val, _values, result) {
+        
         
         result = val['$[]'](0)['$<<'](val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_289$198.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_290', $Ruby30__reduce_290$199 = function $$_reduce_290(val, _values, result) {
+      $def(self, '$_reduce_296', function $$_reduce_296(val, _values, result) {
         var self = this;
 
         
         result = val['$[]'](0)['$<<'](self.builder.$splat(val['$[]'](2), val['$[]'](3)));
         return result;
-      }, $Ruby30__reduce_290$199.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_291', $Ruby30__reduce_291$200 = function $$_reduce_291(val, _values, result) {
+      $def(self, '$_reduce_297', function $$_reduce_297(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$array(nil, val['$[]'](0), nil);
         return result;
-      }, $Ruby30__reduce_291$200.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_293', $Ruby30__reduce_293$201 = function $$_reduce_293(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_299', function $$_reduce_299(val, _values, result) {
+        
         
         result = val['$[]'](0)['$<<'](val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_293$201.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_294', $Ruby30__reduce_294$202 = function $$_reduce_294(val, _values, result) {
+      $def(self, '$_reduce_300', function $$_reduce_300(val, _values, result) {
         var self = this;
 
         
         result = val['$[]'](0)['$<<'](self.builder.$splat(val['$[]'](2), val['$[]'](3)));
         return result;
-      }, $Ruby30__reduce_294$202.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_295', $Ruby30__reduce_295$203 = function $$_reduce_295(val, _values, result) {
+      $def(self, '$_reduce_301', function $$_reduce_301(val, _values, result) {
         var self = this;
 
         
         result = [self.builder.$splat(val['$[]'](0), val['$[]'](1))];
         return result;
-      }, $Ruby30__reduce_295$203.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_306', $Ruby30__reduce_306$204 = function $$_reduce_306(val, _values, result) {
+      $def(self, '$_reduce_312', function $$_reduce_312(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$call_method(nil, nil, val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_306$204.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_307', $Ruby30__reduce_307$205 = function $$_reduce_307(val, _values, result) {
+      $def(self, '$_reduce_313', function $$_reduce_313(val, _values, result) {
         var self = this;
 
         
         self.lexer.$cmdarg().$push(false);
         return result;
-      }, $Ruby30__reduce_307$205.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_308', $Ruby30__reduce_308$206 = function $$_reduce_308(val, _values, result) {
+      $def(self, '$_reduce_314', function $$_reduce_314(val, _values, result) {
         var self = this;
 
         
         self.lexer.$cmdarg().$pop();
         result = self.builder.$begin_keyword(val['$[]'](0), val['$[]'](2), val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_308$206.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_309', $Ruby30__reduce_309$207 = function $$_reduce_309(val, _values, result) {
+      $def(self, '$_reduce_315', function $$_reduce_315(val, _values, result) {
         var self = this, $writer = nil;
 
         
         
         $writer = ["expr_endarg"];
-        $send(self.lexer, 'state=', Opal.to_a($writer));
+        $send(self.lexer, 'state=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_309$207.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_310', $Ruby30__reduce_310$208 = function $$_reduce_310(val, _values, result) {
+      $def(self, '$_reduce_316', function $$_reduce_316(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$begin(val['$[]'](0), val['$[]'](1), val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_310$208.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_311', $Ruby30__reduce_311$209 = function $$_reduce_311(val, _values, result) {
+      $def(self, '$_reduce_317', function $$_reduce_317(val, _values, result) {
         var self = this, $writer = nil;
 
         
         
         $writer = ["expr_endarg"];
-        $send(self.lexer, 'state=', Opal.to_a($writer));
+        $send(self.lexer, 'state=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_311$209.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_312', $Ruby30__reduce_312$210 = function $$_reduce_312(val, _values, result) {
+      $def(self, '$_reduce_318', function $$_reduce_318(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$begin(val['$[]'](0), nil, val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_312$210.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_313', $Ruby30__reduce_313$211 = function $$_reduce_313(val, _values, result) {
+      $def(self, '$_reduce_319', function $$_reduce_319(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$begin(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_313$211.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_314', $Ruby30__reduce_314$212 = function $$_reduce_314(val, _values, result) {
+      $def(self, '$_reduce_320', function $$_reduce_320(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$const_fetch(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_314$212.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_315', $Ruby30__reduce_315$213 = function $$_reduce_315(val, _values, result) {
+      $def(self, '$_reduce_321', function $$_reduce_321(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$const_global(val['$[]'](0), val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_315$213.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_316', $Ruby30__reduce_316$214 = function $$_reduce_316(val, _values, result) {
+      $def(self, '$_reduce_322', function $$_reduce_322(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$array(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_316$214.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_317', $Ruby30__reduce_317$215 = function $$_reduce_317(val, _values, result) {
+      $def(self, '$_reduce_323', function $$_reduce_323(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$associate(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_317$215.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_318', $Ruby30__reduce_318$216 = function $$_reduce_318(val, _values, result) {
+      $def(self, '$_reduce_324', function $$_reduce_324(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$keyword_cmd("return", val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_318$216.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_319', $Ruby30__reduce_319$217 = function $$_reduce_319(val, _values, result) {
+      $def(self, '$_reduce_325', function $$_reduce_325(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$keyword_cmd("yield", val['$[]'](0), val['$[]'](1), val['$[]'](2), val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_319$217.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_320', $Ruby30__reduce_320$218 = function $$_reduce_320(val, _values, result) {
+      $def(self, '$_reduce_326', function $$_reduce_326(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$keyword_cmd("yield", val['$[]'](0), val['$[]'](1), [], val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_320$218.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_321', $Ruby30__reduce_321$219 = function $$_reduce_321(val, _values, result) {
+      $def(self, '$_reduce_327', function $$_reduce_327(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$keyword_cmd("yield", val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_321$219.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_322', $Ruby30__reduce_322$220 = function $$_reduce_322(val, _values, result) {
-        var self = this;
+      $def(self, '$_reduce_328', function $$_reduce_328(val, _values, result) {
+        var self = this, $writer = nil;
+
+        
+        
+        $writer = [true];
+        $send(self.context, 'in_defined=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
+        return result;
+      }, 3);
+      
+      $def(self, '$_reduce_329', function $$_reduce_329(val, _values, result) {
+        var self = this, $writer = nil;
 
         
-        result = self.builder.$keyword_cmd("defined?", val['$[]'](0), val['$[]'](2), [val['$[]'](3)], val['$[]'](4));
+        
+        $writer = [false];
+        $send(self.context, 'in_defined=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
+        result = self.builder.$keyword_cmd("defined?", val['$[]'](0), val['$[]'](2), [val['$[]'](4)], val['$[]'](5));
         return result;
-      }, $Ruby30__reduce_322$220.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_323', $Ruby30__reduce_323$221 = function $$_reduce_323(val, _values, result) {
+      $def(self, '$_reduce_330', function $$_reduce_330(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$not_op(val['$[]'](0), val['$[]'](1), val['$[]'](2), val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_323$221.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_324', $Ruby30__reduce_324$222 = function $$_reduce_324(val, _values, result) {
+      $def(self, '$_reduce_331', function $$_reduce_331(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$not_op(val['$[]'](0), val['$[]'](1), nil, val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_324$222.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_325', $Ruby30__reduce_325$223 = function $$_reduce_325(val, _values, result) {
+      $def(self, '$_reduce_332', function $$_reduce_332(val, _values, result) {
         var $a, $b, self = this, method_call = nil, begin_t = nil, args = nil, body = nil, end_t = nil;
 
         
         method_call = self.builder.$call_method(nil, nil, val['$[]'](0));
-        $b = val['$[]'](1), $a = Opal.to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), (end_t = ($a[3] == null ? nil : $a[3])), $b;
+        $b = val['$[]'](1), $a = $to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), (end_t = ($a[3] == null ? nil : $a[3])), $b;
         result = self.builder.$block(method_call, begin_t, args, body, end_t);
         return result;
-      }, $Ruby30__reduce_325$223.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_327', $Ruby30__reduce_327$224 = function $$_reduce_327(val, _values, result) {
+      $def(self, '$_reduce_334', function $$_reduce_334(val, _values, result) {
         var $a, $b, self = this, begin_t = nil, args = nil, body = nil, end_t = nil;
 
         
-        $b = val['$[]'](1), $a = Opal.to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), (end_t = ($a[3] == null ? nil : $a[3])), $b;
+        $b = val['$[]'](1), $a = $to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), (end_t = ($a[3] == null ? nil : $a[3])), $b;
         result = self.builder.$block(val['$[]'](0), begin_t, args, body, end_t);
         return result;
-      }, $Ruby30__reduce_327$224.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_329', $Ruby30__reduce_329$225 = function $$_reduce_329(val, _values, result) {
+      $def(self, '$_reduce_336', function $$_reduce_336(val, _values, result) {
         var $a, $b, self = this, else_t = nil, else_ = nil;
 
         
-        $b = val['$[]'](4), $a = Opal.to_ary($b), (else_t = ($a[0] == null ? nil : $a[0])), (else_ = ($a[1] == null ? nil : $a[1])), $b;
+        $b = val['$[]'](4), $a = $to_ary($b), (else_t = ($a[0] == null ? nil : $a[0])), (else_ = ($a[1] == null ? nil : $a[1])), $b;
         result = self.builder.$condition(val['$[]'](0), val['$[]'](1), val['$[]'](2), val['$[]'](3), else_t, else_, val['$[]'](5));
         return result;
-      }, $Ruby30__reduce_329$225.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_330', $Ruby30__reduce_330$226 = function $$_reduce_330(val, _values, result) {
+      $def(self, '$_reduce_337', function $$_reduce_337(val, _values, result) {
         var $a, $b, self = this, else_t = nil, else_ = nil;
 
         
-        $b = val['$[]'](4), $a = Opal.to_ary($b), (else_t = ($a[0] == null ? nil : $a[0])), (else_ = ($a[1] == null ? nil : $a[1])), $b;
+        $b = val['$[]'](4), $a = $to_ary($b), (else_t = ($a[0] == null ? nil : $a[0])), (else_ = ($a[1] == null ? nil : $a[1])), $b;
         result = self.builder.$condition(val['$[]'](0), val['$[]'](1), val['$[]'](2), else_, else_t, val['$[]'](3), val['$[]'](5));
         return result;
-      }, $Ruby30__reduce_330$226.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_331', $Ruby30__reduce_331$227 = function $$_reduce_331(val, _values, result) {
+      $def(self, '$_reduce_338', function $$_reduce_338(val, _values, result) {
         var self = this;
 
         
-        result = $send(self.builder, 'loop', ["while", val['$[]'](0)].concat(Opal.to_a(val['$[]'](1))).concat([val['$[]'](2), val['$[]'](3)]));
+        result = $send(self.builder, 'loop', ["while", val['$[]'](0)].concat($to_a(val['$[]'](1))).concat([val['$[]'](2), val['$[]'](3)]));
         return result;
-      }, $Ruby30__reduce_331$227.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_332', $Ruby30__reduce_332$228 = function $$_reduce_332(val, _values, result) {
+      $def(self, '$_reduce_339', function $$_reduce_339(val, _values, result) {
         var self = this;
 
         
-        result = $send(self.builder, 'loop', ["until", val['$[]'](0)].concat(Opal.to_a(val['$[]'](1))).concat([val['$[]'](2), val['$[]'](3)]));
+        result = $send(self.builder, 'loop', ["until", val['$[]'](0)].concat($to_a(val['$[]'](1))).concat([val['$[]'](2), val['$[]'](3)]));
         return result;
-      }, $Ruby30__reduce_332$228.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_333', $Ruby30__reduce_333$229 = function $$_reduce_333(val, _values, result) {
+      $def(self, '$_reduce_340', function $$_reduce_340(val, _values, result) {
         var $a, $b, $c, self = this, when_bodies = nil, else_t = nil, else_body = nil;
 
         
-        $a = [].concat(Opal.to_a(val['$[]'](3))), $b = $a.length - 1, $b = ($b < 0) ? 0 : $b, (when_bodies = $slice.call($a, 0, $b)), ($c = Opal.to_ary(($a[$b] == null ? nil : $a[$b])), (else_t = ($c[0] == null ? nil : $c[0])), (else_body = ($c[1] == null ? nil : $c[1]))), $a;
+        $a = [].concat($to_a(val['$[]'](3))), $b = $a.length - 1, $b = ($b < 0) ? 0 : $b, (when_bodies = $slice.call($a, 0, $b)), ($c = $to_ary(($a[$b] == null ? nil : $a[$b])), (else_t = ($c[0] == null ? nil : $c[0])), (else_body = ($c[1] == null ? nil : $c[1]))), $a;
         result = self.builder.$case(val['$[]'](0), val['$[]'](1), when_bodies, else_t, else_body, val['$[]'](4));
         return result;
-      }, $Ruby30__reduce_333$229.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_334', $Ruby30__reduce_334$230 = function $$_reduce_334(val, _values, result) {
+      $def(self, '$_reduce_341', function $$_reduce_341(val, _values, result) {
         var $a, $b, $c, self = this, when_bodies = nil, else_t = nil, else_body = nil;
 
         
-        $a = [].concat(Opal.to_a(val['$[]'](2))), $b = $a.length - 1, $b = ($b < 0) ? 0 : $b, (when_bodies = $slice.call($a, 0, $b)), ($c = Opal.to_ary(($a[$b] == null ? nil : $a[$b])), (else_t = ($c[0] == null ? nil : $c[0])), (else_body = ($c[1] == null ? nil : $c[1]))), $a;
+        $a = [].concat($to_a(val['$[]'](2))), $b = $a.length - 1, $b = ($b < 0) ? 0 : $b, (when_bodies = $slice.call($a, 0, $b)), ($c = $to_ary(($a[$b] == null ? nil : $a[$b])), (else_t = ($c[0] == null ? nil : $c[0])), (else_body = ($c[1] == null ? nil : $c[1]))), $a;
         result = self.builder.$case(val['$[]'](0), nil, when_bodies, else_t, else_body, val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_334$230.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_335', $Ruby30__reduce_335$231 = function $$_reduce_335(val, _values, result) {
+      $def(self, '$_reduce_342', function $$_reduce_342(val, _values, result) {
         var $a, $b, $c, self = this, in_bodies = nil, else_t = nil, else_body = nil;
 
         
-        $a = [].concat(Opal.to_a(val['$[]'](3))), $b = $a.length - 1, $b = ($b < 0) ? 0 : $b, (in_bodies = $slice.call($a, 0, $b)), ($c = Opal.to_ary(($a[$b] == null ? nil : $a[$b])), (else_t = ($c[0] == null ? nil : $c[0])), (else_body = ($c[1] == null ? nil : $c[1]))), $a;
+        $a = [].concat($to_a(val['$[]'](3))), $b = $a.length - 1, $b = ($b < 0) ? 0 : $b, (in_bodies = $slice.call($a, 0, $b)), ($c = $to_ary(($a[$b] == null ? nil : $a[$b])), (else_t = ($c[0] == null ? nil : $c[0])), (else_body = ($c[1] == null ? nil : $c[1]))), $a;
         result = self.builder.$case_match(val['$[]'](0), val['$[]'](1), in_bodies, else_t, else_body, val['$[]'](4));
         return result;
-      }, $Ruby30__reduce_335$231.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_336', $Ruby30__reduce_336$232 = function $$_reduce_336(val, _values, result) {
+      $def(self, '$_reduce_343', function $$_reduce_343(val, _values, result) {
         var self = this;
 
         
-        result = $send(self.builder, 'for', [val['$[]'](0), val['$[]'](1), val['$[]'](2)].concat(Opal.to_a(val['$[]'](3))).concat([val['$[]'](4), val['$[]'](5)]));
+        result = $send(self.builder, 'for', [val['$[]'](0), val['$[]'](1), val['$[]'](2)].concat($to_a(val['$[]'](3))).concat([val['$[]'](4), val['$[]'](5)]));
         return result;
-      }, $Ruby30__reduce_336$232.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_337', $Ruby30__reduce_337$233 = function $$_reduce_337(val, _values, result) {
+      $def(self, '$_reduce_344', function $$_reduce_344(val, _values, result) {
         var self = this, $writer = nil;
 
         
         
         $writer = [true];
-        $send(self.context, 'in_class=', Opal.to_a($writer));
+        $send(self.context, 'in_class=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         self.$local_push();
         return result;
-      }, $Ruby30__reduce_337$233.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_338', $Ruby30__reduce_338$234 = function $$_reduce_338(val, _values, result) {
+      $def(self, '$_reduce_345', function $$_reduce_345(val, _values, result) {
         var $a, $b, self = this, k_class = nil, ctx = nil, lt_t = nil, superclass = nil, $writer = nil;
 
         
-        $b = val['$[]'](0), $a = Opal.to_ary($b), (k_class = ($a[0] == null ? nil : $a[0])), (ctx = ($a[1] == null ? nil : $a[1])), $b;
+        $b = val['$[]'](0), $a = $to_ary($b), (k_class = ($a[0] == null ? nil : $a[0])), (ctx = ($a[1] == null ? nil : $a[1])), $b;
         if ($truthy(self.context.$in_def())) {
-          self.$diagnostic("error", "class_in_def", nil, k_class)};
-        $b = val['$[]'](2), $a = Opal.to_ary($b), (lt_t = ($a[0] == null ? nil : $a[0])), (superclass = ($a[1] == null ? nil : $a[1])), $b;
+          self.$diagnostic("error", "class_in_def", nil, k_class)
+        };
+        $b = val['$[]'](2), $a = $to_ary($b), (lt_t = ($a[0] == null ? nil : $a[0])), (superclass = ($a[1] == null ? nil : $a[1])), $b;
         result = self.builder.$def_class(k_class, val['$[]'](1), lt_t, superclass, val['$[]'](4), val['$[]'](5));
         self.$local_pop();
         
         $writer = [ctx.$in_class()];
-        $send(self.context, 'in_class=', Opal.to_a($writer));
+        $send(self.context, 'in_class=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_338$234.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_339', $Ruby30__reduce_339$235 = function $$_reduce_339(val, _values, result) {
+      $def(self, '$_reduce_346', function $$_reduce_346(val, _values, result) {
         var self = this, $writer = nil;
 
         
         
         $writer = [false];
-        $send(self.context, 'in_def=', Opal.to_a($writer));
+        $send(self.context, 'in_def=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         
         $writer = [false];
-        $send(self.context, 'in_class=', Opal.to_a($writer));
+        $send(self.context, 'in_class=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         self.$local_push();
         return result;
-      }, $Ruby30__reduce_339$235.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_340', $Ruby30__reduce_340$236 = function $$_reduce_340(val, _values, result) {
+      $def(self, '$_reduce_347', function $$_reduce_347(val, _values, result) {
         var $a, $b, self = this, k_class = nil, ctx = nil, $writer = nil;
 
         
-        $b = val['$[]'](0), $a = Opal.to_ary($b), (k_class = ($a[0] == null ? nil : $a[0])), (ctx = ($a[1] == null ? nil : $a[1])), $b;
+        $b = val['$[]'](0), $a = $to_ary($b), (k_class = ($a[0] == null ? nil : $a[0])), (ctx = ($a[1] == null ? nil : $a[1])), $b;
         result = self.builder.$def_sclass(k_class, val['$[]'](1), val['$[]'](2), val['$[]'](5), val['$[]'](6));
         self.$local_pop();
         
         $writer = [ctx.$in_def()];
-        $send(self.context, 'in_def=', Opal.to_a($writer));
+        $send(self.context, 'in_def=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         
         $writer = [ctx.$in_class()];
-        $send(self.context, 'in_class=', Opal.to_a($writer));
+        $send(self.context, 'in_class=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_340$236.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_341', $Ruby30__reduce_341$237 = function $$_reduce_341(val, _values, result) {
+      $def(self, '$_reduce_348', function $$_reduce_348(val, _values, result) {
         var self = this, $writer = nil;
 
         
         
         $writer = [true];
-        $send(self.context, 'in_class=', Opal.to_a($writer));
+        $send(self.context, 'in_class=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         self.$local_push();
         return result;
-      }, $Ruby30__reduce_341$237.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_342', $Ruby30__reduce_342$238 = function $$_reduce_342(val, _values, result) {
+      $def(self, '$_reduce_349', function $$_reduce_349(val, _values, result) {
         var $a, $b, self = this, k_mod = nil, ctx = nil, $writer = nil;
 
         
-        $b = val['$[]'](0), $a = Opal.to_ary($b), (k_mod = ($a[0] == null ? nil : $a[0])), (ctx = ($a[1] == null ? nil : $a[1])), $b;
+        $b = val['$[]'](0), $a = $to_ary($b), (k_mod = ($a[0] == null ? nil : $a[0])), (ctx = ($a[1] == null ? nil : $a[1])), $b;
         if ($truthy(self.context.$in_def())) {
-          self.$diagnostic("error", "module_in_def", nil, k_mod)};
+          self.$diagnostic("error", "module_in_def", nil, k_mod)
+        };
         result = self.builder.$def_module(k_mod, val['$[]'](1), val['$[]'](3), val['$[]'](4));
         self.$local_pop();
         
         $writer = [ctx.$in_class()];
-        $send(self.context, 'in_class=', Opal.to_a($writer));
+        $send(self.context, 'in_class=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_342$238.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_343', $Ruby30__reduce_343$239 = function $$_reduce_343(val, _values, result) {
+      $def(self, '$_reduce_350', function $$_reduce_350(val, _values, result) {
         var $a, $b, $c, self = this, def_t = nil, name_t = nil, ctx = nil, $writer = nil;
 
         
-        $b = val['$[]'](0), $a = Opal.to_ary($b), (def_t = ($a[0] == null ? nil : $a[0])), ($c = Opal.to_ary(($a[1] == null ? nil : $a[1])), (name_t = ($c[0] == null ? nil : $c[0])), (ctx = ($c[1] == null ? nil : $c[1]))), $b;
+        $b = val['$[]'](0), $a = $to_ary($b), (def_t = ($a[0] == null ? nil : $a[0])), ($c = $to_ary(($a[1] == null ? nil : $a[1])), (name_t = ($c[0] == null ? nil : $c[0])), (ctx = ($c[1] == null ? nil : $c[1]))), $b;
         result = self.builder.$def_method(def_t, name_t, val['$[]'](1), val['$[]'](2), val['$[]'](3));
         self.$local_pop();
+        self.current_arg_stack.$pop();
         
         $writer = [ctx.$in_def()];
-        $send(self.context, 'in_def=', Opal.to_a($writer));
+        $send(self.context, 'in_def=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
-        self.current_arg_stack.$pop();
         return result;
-      }, $Ruby30__reduce_343$239.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_344', $Ruby30__reduce_344$240 = function $$_reduce_344(val, _values, result) {
+      $def(self, '$_reduce_351', function $$_reduce_351(val, _values, result) {
         var $a, $b, $c, self = this, def_t = nil, recv = nil, dot_t = nil, name_t = nil, ctx = nil, $writer = nil;
 
         
-        $b = val['$[]'](0), $a = Opal.to_ary($b), (def_t = ($a[0] == null ? nil : $a[0])), (recv = ($a[1] == null ? nil : $a[1])), (dot_t = ($a[2] == null ? nil : $a[2])), ($c = Opal.to_ary(($a[3] == null ? nil : $a[3])), (name_t = ($c[0] == null ? nil : $c[0])), (ctx = ($c[1] == null ? nil : $c[1]))), $b;
+        $b = val['$[]'](0), $a = $to_ary($b), (def_t = ($a[0] == null ? nil : $a[0])), (recv = ($a[1] == null ? nil : $a[1])), (dot_t = ($a[2] == null ? nil : $a[2])), ($c = $to_ary(($a[3] == null ? nil : $a[3])), (name_t = ($c[0] == null ? nil : $c[0])), (ctx = ($c[1] == null ? nil : $c[1]))), $b;
         result = self.builder.$def_singleton(def_t, recv, dot_t, name_t, val['$[]'](1), val['$[]'](2), val['$[]'](3));
         self.$local_pop();
+        self.current_arg_stack.$pop();
         
         $writer = [ctx.$in_def()];
-        $send(self.context, 'in_def=', Opal.to_a($writer));
+        $send(self.context, 'in_def=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
-        self.current_arg_stack.$pop();
         return result;
-      }, $Ruby30__reduce_344$240.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_345', $Ruby30__reduce_345$241 = function $$_reduce_345(val, _values, result) {
+      $def(self, '$_reduce_352', function $$_reduce_352(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$keyword_cmd("break", val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_345$241.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_346', $Ruby30__reduce_346$242 = function $$_reduce_346(val, _values, result) {
+      $def(self, '$_reduce_353', function $$_reduce_353(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$keyword_cmd("next", val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_346$242.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_347', $Ruby30__reduce_347$243 = function $$_reduce_347(val, _values, result) {
+      $def(self, '$_reduce_354', function $$_reduce_354(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$keyword_cmd("redo", val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_347$243.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_348', $Ruby30__reduce_348$244 = function $$_reduce_348(val, _values, result) {
+      $def(self, '$_reduce_355', function $$_reduce_355(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$keyword_cmd("retry", val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_348$244.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_350', $Ruby30__reduce_350$245 = function $$_reduce_350(val, _values, result) {
+      $def(self, '$_reduce_357', function $$_reduce_357(val, _values, result) {
         var self = this;
 
         
         result = [val['$[]'](0), self.context.$dup()];
         return result;
-      }, $Ruby30__reduce_350$245.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_351', $Ruby30__reduce_351$246 = function $$_reduce_351(val, _values, result) {
+      $def(self, '$_reduce_358', function $$_reduce_358(val, _values, result) {
         var self = this;
 
         
         result = [val['$[]'](0), self.context.$dup()];
         return result;
-      }, $Ruby30__reduce_351$246.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_352', $Ruby30__reduce_352$247 = function $$_reduce_352(val, _values, result) {
-        var self = this;
+      $def(self, '$_reduce_359', function $$_reduce_359(val, _values, result) {
+        var self = this, $writer = nil;
 
         
         result = val['$[]'](0);
+        
+        $writer = [true];
+        $send(self.context, 'in_argdef=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_352$247.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_353', $Ruby30__reduce_353$248 = function $$_reduce_353(val, _values, result) {
-        var self = this, $ret_or_6 = nil, $ret_or_7 = nil, $ret_or_8 = nil;
+      $def(self, '$_reduce_360', function $$_reduce_360(val, _values, result) {
+        var self = this, $ret_or_1 = nil;
 
         
-        if ($truthy((function() {if ($truthy(($ret_or_6 = (function() {if ($truthy(($ret_or_7 = self.context.$in_class()))) {
-          return self.context.$in_def()['$!']()
-        } else {
-          return $ret_or_7
-        }; return nil; })()))) {
-          return (function() {if ($truthy(($ret_or_8 = self.$context().$in_block()))) {
-            return $ret_or_8
-          } else {
-            return self.$context().$in_lambda()
-          }; return nil; })()['$!']()
-        } else {
-          return $ret_or_6
-        }; return nil; })())) {
-          self.$diagnostic("error", "invalid_return", nil, val['$[]'](0))};
+        if ((($truthy(self.context.$in_class()) && ($not(self.context.$in_def()))) && ($not(($truthy(($ret_or_1 = self.$context().$in_block())) ? ($ret_or_1) : (self.$context().$in_lambda())))))) {
+          self.$diagnostic("error", "invalid_return", nil, val['$[]'](0))
+        };
         return result;
-      }, $Ruby30__reduce_353$248.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_356', $Ruby30__reduce_356$249 = function $$_reduce_356(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_363', function $$_reduce_363(val, _values, result) {
+        
         
         result = val['$[]'](1);
         return result;
-      }, $Ruby30__reduce_356$249.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_360', $Ruby30__reduce_360$250 = function $$_reduce_360(val, _values, result) {
+      $def(self, '$_reduce_367', function $$_reduce_367(val, _values, result) {
         var $a, $b, self = this, else_t = nil, else_ = nil;
 
         
-        $b = val['$[]'](4), $a = Opal.to_ary($b), (else_t = ($a[0] == null ? nil : $a[0])), (else_ = ($a[1] == null ? nil : $a[1])), $b;
+        $b = val['$[]'](4), $a = $to_ary($b), (else_t = ($a[0] == null ? nil : $a[0])), (else_ = ($a[1] == null ? nil : $a[1])), $b;
         result = [val['$[]'](0), self.builder.$condition(val['$[]'](0), val['$[]'](1), val['$[]'](2), val['$[]'](3), else_t, else_, nil)];
         return result;
-      }, $Ruby30__reduce_360$250.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_362', $Ruby30__reduce_362$251 = function $$_reduce_362(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_369', function $$_reduce_369(val, _values, result) {
+        
         
         result = val;
         return result;
-      }, $Ruby30__reduce_362$251.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_365', $Ruby30__reduce_365$252 = function $$_reduce_365(val, _values, result) {
+      $def(self, '$_reduce_372', function $$_reduce_372(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$arg(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_365$252.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_366', $Ruby30__reduce_366$253 = function $$_reduce_366(val, _values, result) {
+      $def(self, '$_reduce_373', function $$_reduce_373(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$multi_lhs(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_366$253.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_367', $Ruby30__reduce_367$254 = function $$_reduce_367(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_374', function $$_reduce_374(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_367$254.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_368', $Ruby30__reduce_368$255 = function $$_reduce_368(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_375', function $$_reduce_375(val, _values, result) {
+        
         
         result = val['$[]'](0)['$<<'](val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_368$255.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_370', $Ruby30__reduce_370$256 = function $$_reduce_370(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_377', function $$_reduce_377(val, _values, result) {
+        
         
         result = val['$[]'](0).$push(val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_370$256.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_371', $Ruby30__reduce_371$257 = function $$_reduce_371(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_378', function $$_reduce_378(val, _values, result) {
+        
         
         result = val['$[]'](0).$push(val['$[]'](2)).$concat(val['$[]'](4));
         return result;
-      }, $Ruby30__reduce_371$257.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_372', $Ruby30__reduce_372$258 = function $$_reduce_372(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_379', function $$_reduce_379(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_372$258.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_373', $Ruby30__reduce_373$259 = function $$_reduce_373(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_380', function $$_reduce_380(val, _values, result) {
         
-        result = [val['$[]'](0)].concat(Opal.to_a(val['$[]'](2)));
+        
+        result = [val['$[]'](0)].concat($to_a(val['$[]'](2)));
         return result;
-      }, $Ruby30__reduce_373$259.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_374', $Ruby30__reduce_374$260 = function $$_reduce_374(val, _values, result) {
+      $def(self, '$_reduce_381', function $$_reduce_381(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$restarg(val['$[]'](0), val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_374$260.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_375', $Ruby30__reduce_375$261 = function $$_reduce_375(val, _values, result) {
+      $def(self, '$_reduce_382', function $$_reduce_382(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$restarg(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_375$261.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_378', $Ruby30__reduce_378$262 = function $$_reduce_378(val, _values, result) {
-        var self = this;
+      $def(self, '$_reduce_385', function $$_reduce_385(val, _values, result) {
+        var self = this, $writer = nil;
 
         
+        
+        $writer = [false];
+        $send(self.context, 'in_argdef=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
+        return result;
+      }, 3);
+      
+      $def(self, '$_reduce_386', function $$_reduce_386(val, _values, result) {
+        
+        
+        result = val['$[]'](1);
+        return result;
+      }, 3);
+      
+      $def(self, '$_reduce_387', function $$_reduce_387(val, _values, result) {
+        
+        
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_378$262.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_379', $Ruby30__reduce_379$263 = function $$_reduce_379(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_388', function $$_reduce_388(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_379$263.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_380', $Ruby30__reduce_380$264 = function $$_reduce_380(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_389', function $$_reduce_389(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_380$264.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_381', $Ruby30__reduce_381$265 = function $$_reduce_381(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_390', function $$_reduce_390(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_381$265.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_382', $Ruby30__reduce_382$266 = function $$_reduce_382(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_391', function $$_reduce_391(val, _values, result) {
+        
         
         result = val['$[]'](1);
         return result;
-      }, $Ruby30__reduce_382$266.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_383', $Ruby30__reduce_383$267 = function $$_reduce_383(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_392', function $$_reduce_392(val, _values, result) {
+        
         
         result = [];
         return result;
-      }, $Ruby30__reduce_383$267.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_385', $Ruby30__reduce_385$268 = function $$_reduce_385(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_394', function $$_reduce_394(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](4)).$concat(val['$[]'](5));
         return result;
-      }, $Ruby30__reduce_385$268.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_386', $Ruby30__reduce_386$269 = function $$_reduce_386(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_395', function $$_reduce_395(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](4)).$concat(val['$[]'](6)).$concat(val['$[]'](7));
         return result;
-      }, $Ruby30__reduce_386$269.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_387', $Ruby30__reduce_387$270 = function $$_reduce_387(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_396', function $$_reduce_396(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_387$270.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_388', $Ruby30__reduce_388$271 = function $$_reduce_388(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_397', function $$_reduce_397(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](4)).$concat(val['$[]'](5));
         return result;
-      }, $Ruby30__reduce_388$271.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_389', $Ruby30__reduce_389$272 = function $$_reduce_389(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_398', function $$_reduce_398(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_389$272.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_391', $Ruby30__reduce_391$273 = function $$_reduce_391(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_400', function $$_reduce_400(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](4)).$concat(val['$[]'](5));
         return result;
-      }, $Ruby30__reduce_391$273.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_392', $Ruby30__reduce_392$274 = function $$_reduce_392(val, _values, result) {
-        var self = this, $ret_or_9 = nil;
+      $def(self, '$_reduce_401', function $$_reduce_401(val, _values, result) {
+        var self = this;
 
         
-        if ($truthy((function() {if ($truthy(($ret_or_9 = val['$[]'](1)['$empty?']()))) {
-          return val['$[]'](0).$size()['$=='](1)
-        } else {
-          return $ret_or_9
-        }; return nil; })())) {
+        if (($truthy(val['$[]'](1)['$empty?']()) && ($eqeq(val['$[]'](0).$size(), 1)))) {
           result = [self.builder.$procarg0(val['$[]'](0)['$[]'](0))]
         } else {
           result = val['$[]'](0).$concat(val['$[]'](1))
         };
         return result;
-      }, $Ruby30__reduce_392$274.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_393', $Ruby30__reduce_393$275 = function $$_reduce_393(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_402', function $$_reduce_402(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_393$275.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_394', $Ruby30__reduce_394$276 = function $$_reduce_394(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_403', function $$_reduce_403(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](4)).$concat(val['$[]'](5));
         return result;
-      }, $Ruby30__reduce_394$276.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_395', $Ruby30__reduce_395$277 = function $$_reduce_395(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_404', function $$_reduce_404(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_395$277.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_396', $Ruby30__reduce_396$278 = function $$_reduce_396(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_405', function $$_reduce_405(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_396$278.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_397', $Ruby30__reduce_397$279 = function $$_reduce_397(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_406', function $$_reduce_406(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_397$279.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_398', $Ruby30__reduce_398$280 = function $$_reduce_398(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_407', function $$_reduce_407(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_398$280.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_400', $Ruby30__reduce_400$281 = function $$_reduce_400(val, _values, result) {
+      $def(self, '$_reduce_409', function $$_reduce_409(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$args(nil, [], nil);
         return result;
-      }, $Ruby30__reduce_400$281.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_401', $Ruby30__reduce_401$282 = function $$_reduce_401(val, _values, result) {
+      $def(self, '$_reduce_410', function $$_reduce_410(val, _values, result) {
         var self = this, $writer = nil;
 
         
         
         $writer = ["expr_value"];
-        $send(self.lexer, 'state=', Opal.to_a($writer));
+        $send(self.lexer, 'state=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_401$282.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_402', $Ruby30__reduce_402$283 = function $$_reduce_402(val, _values, result) {
-        var self = this;
+      $def(self, '$_reduce_411', function $$_reduce_411(val, _values, result) {
+        var self = this, $writer = nil;
 
         
         self.max_numparam_stack['$has_ordinary_params!']();
         self.current_arg_stack.$set(nil);
+        
+        $writer = [false];
+        $send(self.context, 'in_argdef=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
         result = self.builder.$args(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_402$283.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_403', $Ruby30__reduce_403$284 = function $$_reduce_403(val, _values, result) {
-        var self = this;
+      $def(self, '$_reduce_412', function $$_reduce_412(val, _values, result) {
+        var self = this, $writer = nil;
 
         
         self.max_numparam_stack['$has_ordinary_params!']();
         self.current_arg_stack.$set(nil);
+        
+        $writer = [false];
+        $send(self.context, 'in_argdef=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
         result = self.builder.$args(val['$[]'](0), val['$[]'](1).$concat(val['$[]'](2)), val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_403$284.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_404', $Ruby30__reduce_404$285 = function $$_reduce_404(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_413', function $$_reduce_413(val, _values, result) {
+        
         
         result = [];
         return result;
-      }, $Ruby30__reduce_404$285.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_405', $Ruby30__reduce_405$286 = function $$_reduce_405(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_414', function $$_reduce_414(val, _values, result) {
+        
         
         result = val['$[]'](2);
         return result;
-      }, $Ruby30__reduce_405$286.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_406', $Ruby30__reduce_406$287 = function $$_reduce_406(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_415', function $$_reduce_415(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_406$287.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_407', $Ruby30__reduce_407$288 = function $$_reduce_407(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_416', function $$_reduce_416(val, _values, result) {
+        
         
         result = val['$[]'](0)['$<<'](val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_407$288.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_408', $Ruby30__reduce_408$289 = function $$_reduce_408(val, _values, result) {
+      $def(self, '$_reduce_417', function $$_reduce_417(val, _values, result) {
         var self = this;
 
         
         self.static_env.$declare(val['$[]'](0)['$[]'](0));
         result = self.builder.$shadowarg(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_408$289.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_410', $Ruby30__reduce_410$290 = function $$_reduce_410(val, _values, result) {
+      $def(self, '$_reduce_419', function $$_reduce_419(val, _values, result) {
         var self = this, $writer = nil;
 
         
@@ -25715,393 +22868,389 @@ Opal.modules["parser/ruby30"] = function(Opal) {
         result = self.context.$dup();
         
         $writer = [true];
-        $send(self.context, 'in_lambda=', Opal.to_a($writer));
+        $send(self.context, 'in_lambda=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_410$290.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_411', $Ruby30__reduce_411$291 = function $$_reduce_411(val, _values, result) {
+      $def(self, '$_reduce_420', function $$_reduce_420(val, _values, result) {
         var self = this;
 
         
         self.lexer.$cmdarg().$push(false);
         return result;
-      }, $Ruby30__reduce_411$291.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_412', $Ruby30__reduce_412$292 = function $$_reduce_412(val, _values, result) {
+      $def(self, '$_reduce_421', function $$_reduce_421(val, _values, result) {
         var $a, $b, self = this, lambda_call = nil, args = nil, begin_t = nil, body = nil, end_t = nil, $writer = nil;
 
         
         lambda_call = self.builder.$call_lambda(val['$[]'](0));
-        args = (function() {if ($truthy(self.max_numparam_stack['$has_numparams?']())) {
-          return self.builder.$numargs(self.max_numparam_stack.$top())
-        } else {
-          return val['$[]'](2)
-        }; return nil; })();
-        $b = val['$[]'](4), $a = Opal.to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (body = ($a[1] == null ? nil : $a[1])), (end_t = ($a[2] == null ? nil : $a[2])), $b;
+        args = ($truthy(self.max_numparam_stack['$has_numparams?']()) ? (self.builder.$numargs(self.max_numparam_stack.$top())) : (val['$[]'](2)));
+        $b = val['$[]'](4), $a = $to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (body = ($a[1] == null ? nil : $a[1])), (end_t = ($a[2] == null ? nil : $a[2])), $b;
         self.max_numparam_stack.$pop();
         self.static_env.$unextend();
         self.lexer.$cmdarg().$pop();
         
         $writer = [val['$[]'](1).$in_lambda()];
-        $send(self.context, 'in_lambda=', Opal.to_a($writer));
+        $send(self.context, 'in_lambda=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         result = self.builder.$block(lambda_call, begin_t, args, body, end_t);
         return result;
-      }, $Ruby30__reduce_412$292.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_413', $Ruby30__reduce_413$293 = function $$_reduce_413(val, _values, result) {
-        var self = this;
+      $def(self, '$_reduce_422', function $$_reduce_422(val, _values, result) {
+        var self = this, $writer = nil;
 
         
+        
+        $writer = [false];
+        $send(self.context, 'in_argdef=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
         self.max_numparam_stack['$has_ordinary_params!']();
         result = self.builder.$args(val['$[]'](0), val['$[]'](1).$concat(val['$[]'](2)), val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_413$293.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_414', $Ruby30__reduce_414$294 = function $$_reduce_414(val, _values, result) {
-        var self = this;
+      $def(self, '$_reduce_423', function $$_reduce_423(val, _values, result) {
+        var self = this, $writer = nil;
 
         
+        
+        $writer = [false];
+        $send(self.context, 'in_argdef=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
         if ($truthy(val['$[]'](0)['$any?']())) {
-          self.max_numparam_stack['$has_ordinary_params!']()};
+          self.max_numparam_stack['$has_ordinary_params!']()
+        };
         result = self.builder.$args(nil, val['$[]'](0), nil);
         return result;
-      }, $Ruby30__reduce_414$294.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_415', $Ruby30__reduce_415$295 = function $$_reduce_415(val, _values, result) {
+      $def(self, '$_reduce_424', function $$_reduce_424(val, _values, result) {
         var self = this, $writer = nil;
 
         
         result = self.context.$dup();
         
         $writer = [true];
-        $send(self.context, 'in_lambda=', Opal.to_a($writer));
+        $send(self.context, 'in_lambda=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_415$295.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_416', $Ruby30__reduce_416$296 = function $$_reduce_416(val, _values, result) {
+      $def(self, '$_reduce_425', function $$_reduce_425(val, _values, result) {
         var self = this, $writer = nil;
 
         
-        result = [val['$[]'](0), val['$[]'](2), val['$[]'](3)];
         
         $writer = [val['$[]'](1).$in_lambda()];
-        $send(self.context, 'in_lambda=', Opal.to_a($writer));
+        $send(self.context, 'in_lambda=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
+        result = [val['$[]'](0), val['$[]'](2), val['$[]'](3)];
         return result;
-      }, $Ruby30__reduce_416$296.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_417', $Ruby30__reduce_417$297 = function $$_reduce_417(val, _values, result) {
+      $def(self, '$_reduce_426', function $$_reduce_426(val, _values, result) {
         var self = this, $writer = nil;
 
         
         result = self.context.$dup();
         
         $writer = [true];
-        $send(self.context, 'in_lambda=', Opal.to_a($writer));
+        $send(self.context, 'in_lambda=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_417$297.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_418', $Ruby30__reduce_418$298 = function $$_reduce_418(val, _values, result) {
+      $def(self, '$_reduce_427', function $$_reduce_427(val, _values, result) {
         var self = this, $writer = nil;
 
         
-        result = [val['$[]'](0), val['$[]'](2), val['$[]'](3)];
         
         $writer = [val['$[]'](1).$in_lambda()];
-        $send(self.context, 'in_lambda=', Opal.to_a($writer));
+        $send(self.context, 'in_lambda=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
+        result = [val['$[]'](0), val['$[]'](2), val['$[]'](3)];
         return result;
-      }, $Ruby30__reduce_418$298.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_419', $Ruby30__reduce_419$299 = function $$_reduce_419(val, _values, result) {
+      $def(self, '$_reduce_428', function $$_reduce_428(val, _values, result) {
         var self = this, $writer = nil;
 
         
         result = self.context.$dup();
         
         $writer = [true];
-        $send(self.context, 'in_block=', Opal.to_a($writer));
+        $send(self.context, 'in_block=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_419$299.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_420', $Ruby30__reduce_420$300 = function $$_reduce_420(val, _values, result) {
+      $def(self, '$_reduce_429', function $$_reduce_429(val, _values, result) {
         var self = this, $writer = nil;
 
         
-        result = [val['$[]'](0)].concat(Opal.to_a(val['$[]'](2))).concat([val['$[]'](3)]);
         
         $writer = [val['$[]'](1).$in_block()];
-        $send(self.context, 'in_block=', Opal.to_a($writer));
+        $send(self.context, 'in_block=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
+        result = [val['$[]'](0)].concat($to_a(val['$[]'](2))).concat([val['$[]'](3)]);
         return result;
-      }, $Ruby30__reduce_420$300.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_421', $Ruby30__reduce_421$301 = function $$_reduce_421(val, _values, result) {
+      $def(self, '$_reduce_430', function $$_reduce_430(val, _values, result) {
         var $a, $b, self = this, begin_t = nil, block_args = nil, body = nil, end_t = nil;
 
         
-        $b = val['$[]'](1), $a = Opal.to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (block_args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), (end_t = ($a[3] == null ? nil : $a[3])), $b;
+        $b = val['$[]'](1), $a = $to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (block_args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), (end_t = ($a[3] == null ? nil : $a[3])), $b;
         result = self.builder.$block(val['$[]'](0), begin_t, block_args, body, end_t);
         return result;
-      }, $Ruby30__reduce_421$301.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_422', $Ruby30__reduce_422$302 = function $$_reduce_422(val, _values, result) {
+      $def(self, '$_reduce_431', function $$_reduce_431(val, _values, result) {
         var $a, $b, self = this, lparen_t = nil, args = nil, rparen_t = nil;
 
         
-        $b = val['$[]'](3), $a = Opal.to_ary($b), (lparen_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (rparen_t = ($a[2] == null ? nil : $a[2])), $b;
+        $b = val['$[]'](3), $a = $to_ary($b), (lparen_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (rparen_t = ($a[2] == null ? nil : $a[2])), $b;
         result = self.builder.$call_method(val['$[]'](0), val['$[]'](1), val['$[]'](2), lparen_t, args, rparen_t);
         return result;
-      }, $Ruby30__reduce_422$302.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_423', $Ruby30__reduce_423$303 = function $$_reduce_423(val, _values, result) {
+      $def(self, '$_reduce_432', function $$_reduce_432(val, _values, result) {
         var $a, $b, self = this, lparen_t = nil, args = nil, rparen_t = nil, method_call = nil, begin_t = nil, body = nil, end_t = nil;
 
         
-        $b = val['$[]'](3), $a = Opal.to_ary($b), (lparen_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (rparen_t = ($a[2] == null ? nil : $a[2])), $b;
+        $b = val['$[]'](3), $a = $to_ary($b), (lparen_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (rparen_t = ($a[2] == null ? nil : $a[2])), $b;
         method_call = self.builder.$call_method(val['$[]'](0), val['$[]'](1), val['$[]'](2), lparen_t, args, rparen_t);
-        $b = val['$[]'](4), $a = Opal.to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), (end_t = ($a[3] == null ? nil : $a[3])), $b;
+        $b = val['$[]'](4), $a = $to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), (end_t = ($a[3] == null ? nil : $a[3])), $b;
         result = self.builder.$block(method_call, begin_t, args, body, end_t);
         return result;
-      }, $Ruby30__reduce_423$303.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_424', $Ruby30__reduce_424$304 = function $$_reduce_424(val, _values, result) {
+      $def(self, '$_reduce_433', function $$_reduce_433(val, _values, result) {
         var $a, $b, self = this, method_call = nil, begin_t = nil, args = nil, body = nil, end_t = nil;
 
         
         method_call = self.builder.$call_method(val['$[]'](0), val['$[]'](1), val['$[]'](2), nil, val['$[]'](3), nil);
-        $b = val['$[]'](4), $a = Opal.to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), (end_t = ($a[3] == null ? nil : $a[3])), $b;
+        $b = val['$[]'](4), $a = $to_ary($b), (begin_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), (end_t = ($a[3] == null ? nil : $a[3])), $b;
         result = self.builder.$block(method_call, begin_t, args, body, end_t);
         return result;
-      }, $Ruby30__reduce_424$304.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_425', $Ruby30__reduce_425$305 = function $$_reduce_425(val, _values, result) {
+      $def(self, '$_reduce_434', function $$_reduce_434(val, _values, result) {
         var $a, $b, self = this, lparen_t = nil, args = nil, rparen_t = nil;
 
         
-        $b = val['$[]'](1), $a = Opal.to_ary($b), (lparen_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (rparen_t = ($a[2] == null ? nil : $a[2])), $b;
+        $b = val['$[]'](1), $a = $to_ary($b), (lparen_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (rparen_t = ($a[2] == null ? nil : $a[2])), $b;
         result = self.builder.$call_method(nil, nil, val['$[]'](0), lparen_t, args, rparen_t);
         return result;
-      }, $Ruby30__reduce_425$305.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_426', $Ruby30__reduce_426$306 = function $$_reduce_426(val, _values, result) {
+      $def(self, '$_reduce_435', function $$_reduce_435(val, _values, result) {
         var $a, $b, self = this, lparen_t = nil, args = nil, rparen_t = nil;
 
         
-        $b = val['$[]'](3), $a = Opal.to_ary($b), (lparen_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (rparen_t = ($a[2] == null ? nil : $a[2])), $b;
+        $b = val['$[]'](3), $a = $to_ary($b), (lparen_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (rparen_t = ($a[2] == null ? nil : $a[2])), $b;
         result = self.builder.$call_method(val['$[]'](0), val['$[]'](1), val['$[]'](2), lparen_t, args, rparen_t);
         return result;
-      }, $Ruby30__reduce_426$306.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_427', $Ruby30__reduce_427$307 = function $$_reduce_427(val, _values, result) {
+      $def(self, '$_reduce_436', function $$_reduce_436(val, _values, result) {
         var $a, $b, self = this, lparen_t = nil, args = nil, rparen_t = nil;
 
         
-        $b = val['$[]'](3), $a = Opal.to_ary($b), (lparen_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (rparen_t = ($a[2] == null ? nil : $a[2])), $b;
+        $b = val['$[]'](3), $a = $to_ary($b), (lparen_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (rparen_t = ($a[2] == null ? nil : $a[2])), $b;
         result = self.builder.$call_method(val['$[]'](0), val['$[]'](1), val['$[]'](2), lparen_t, args, rparen_t);
         return result;
-      }, $Ruby30__reduce_427$307.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_428', $Ruby30__reduce_428$308 = function $$_reduce_428(val, _values, result) {
+      $def(self, '$_reduce_437', function $$_reduce_437(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$call_method(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_428$308.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_429', $Ruby30__reduce_429$309 = function $$_reduce_429(val, _values, result) {
+      $def(self, '$_reduce_438', function $$_reduce_438(val, _values, result) {
         var $a, $b, self = this, lparen_t = nil, args = nil, rparen_t = nil;
 
         
-        $b = val['$[]'](2), $a = Opal.to_ary($b), (lparen_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (rparen_t = ($a[2] == null ? nil : $a[2])), $b;
+        $b = val['$[]'](2), $a = $to_ary($b), (lparen_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (rparen_t = ($a[2] == null ? nil : $a[2])), $b;
         result = self.builder.$call_method(val['$[]'](0), val['$[]'](1), nil, lparen_t, args, rparen_t);
         return result;
-      }, $Ruby30__reduce_429$309.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_430', $Ruby30__reduce_430$310 = function $$_reduce_430(val, _values, result) {
+      $def(self, '$_reduce_439', function $$_reduce_439(val, _values, result) {
         var $a, $b, self = this, lparen_t = nil, args = nil, rparen_t = nil;
 
         
-        $b = val['$[]'](2), $a = Opal.to_ary($b), (lparen_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (rparen_t = ($a[2] == null ? nil : $a[2])), $b;
+        $b = val['$[]'](2), $a = $to_ary($b), (lparen_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (rparen_t = ($a[2] == null ? nil : $a[2])), $b;
         result = self.builder.$call_method(val['$[]'](0), val['$[]'](1), nil, lparen_t, args, rparen_t);
         return result;
-      }, $Ruby30__reduce_430$310.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_431', $Ruby30__reduce_431$311 = function $$_reduce_431(val, _values, result) {
+      $def(self, '$_reduce_440', function $$_reduce_440(val, _values, result) {
         var $a, $b, self = this, lparen_t = nil, args = nil, rparen_t = nil;
 
         
-        $b = val['$[]'](1), $a = Opal.to_ary($b), (lparen_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (rparen_t = ($a[2] == null ? nil : $a[2])), $b;
+        $b = val['$[]'](1), $a = $to_ary($b), (lparen_t = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (rparen_t = ($a[2] == null ? nil : $a[2])), $b;
         result = self.builder.$keyword_cmd("super", val['$[]'](0), lparen_t, args, rparen_t);
         return result;
-      }, $Ruby30__reduce_431$311.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_432', $Ruby30__reduce_432$312 = function $$_reduce_432(val, _values, result) {
+      $def(self, '$_reduce_441', function $$_reduce_441(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$keyword_cmd("zsuper", val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_432$312.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_433', $Ruby30__reduce_433$313 = function $$_reduce_433(val, _values, result) {
+      $def(self, '$_reduce_442', function $$_reduce_442(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$index(val['$[]'](0), val['$[]'](1), val['$[]'](2), val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_433$313.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_434', $Ruby30__reduce_434$314 = function $$_reduce_434(val, _values, result) {
+      $def(self, '$_reduce_443', function $$_reduce_443(val, _values, result) {
         var self = this, $writer = nil;
 
         
         result = self.context.$dup();
         
         $writer = [true];
-        $send(self.context, 'in_block=', Opal.to_a($writer));
+        $send(self.context, 'in_block=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_434$314.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_435', $Ruby30__reduce_435$315 = function $$_reduce_435(val, _values, result) {
+      $def(self, '$_reduce_444', function $$_reduce_444(val, _values, result) {
         var self = this, $writer = nil;
 
         
-        result = [val['$[]'](0)].concat(Opal.to_a(val['$[]'](2))).concat([val['$[]'](3)]);
         
         $writer = [val['$[]'](1).$in_block()];
-        $send(self.context, 'in_block=', Opal.to_a($writer));
+        $send(self.context, 'in_block=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
+        result = [val['$[]'](0)].concat($to_a(val['$[]'](2))).concat([val['$[]'](3)]);
         return result;
-      }, $Ruby30__reduce_435$315.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_436', $Ruby30__reduce_436$316 = function $$_reduce_436(val, _values, result) {
+      $def(self, '$_reduce_445', function $$_reduce_445(val, _values, result) {
         var self = this, $writer = nil;
 
         
         result = self.context.$dup();
         
         $writer = [true];
-        $send(self.context, 'in_block=', Opal.to_a($writer));
+        $send(self.context, 'in_block=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_436$316.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_437', $Ruby30__reduce_437$317 = function $$_reduce_437(val, _values, result) {
+      $def(self, '$_reduce_446', function $$_reduce_446(val, _values, result) {
         var self = this, $writer = nil;
 
         
-        result = [val['$[]'](0)].concat(Opal.to_a(val['$[]'](2))).concat([val['$[]'](3)]);
         
         $writer = [val['$[]'](1).$in_block()];
-        $send(self.context, 'in_block=', Opal.to_a($writer));
+        $send(self.context, 'in_block=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
+        result = [val['$[]'](0)].concat($to_a(val['$[]'](2))).concat([val['$[]'](3)]);
         return result;
-      }, $Ruby30__reduce_437$317.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_438', $Ruby30__reduce_438$318 = function $$_reduce_438(val, _values, result) {
+      $def(self, '$_reduce_447', function $$_reduce_447(val, _values, result) {
         var self = this;
 
         
         self.static_env.$extend_dynamic();
         self.max_numparam_stack.$push($hash2(["static"], {"static": false}));
         return result;
-      }, $Ruby30__reduce_438$318.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_439', $Ruby30__reduce_439$319 = function $$_reduce_439(val, _values, result) {
+      $def(self, '$_reduce_448', function $$_reduce_448(val, _values, result) {
         var self = this, args = nil;
 
         
-        args = (function() {if ($truthy(self.max_numparam_stack['$has_numparams?']())) {
-          return self.builder.$numargs(self.max_numparam_stack.$top())
-        } else {
-          return val['$[]'](1)
-        }; return nil; })();
+        args = ($truthy(self.max_numparam_stack['$has_numparams?']()) ? (self.builder.$numargs(self.max_numparam_stack.$top())) : (val['$[]'](1)));
         result = [args, val['$[]'](2)];
         self.max_numparam_stack.$pop();
         self.static_env.$unextend();
         return result;
-      }, $Ruby30__reduce_439$319.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_440', $Ruby30__reduce_440$320 = function $$_reduce_440(val, _values, result) {
+      $def(self, '$_reduce_449', function $$_reduce_449(val, _values, result) {
         var self = this;
 
         
         self.static_env.$extend_dynamic();
         self.max_numparam_stack.$push($hash2(["static"], {"static": false}));
         return result;
-      }, $Ruby30__reduce_440$320.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_441', $Ruby30__reduce_441$321 = function $$_reduce_441(val, _values, result) {
+      $def(self, '$_reduce_450', function $$_reduce_450(val, _values, result) {
         var self = this;
 
         
         self.lexer.$cmdarg().$push(false);
         return result;
-      }, $Ruby30__reduce_441$321.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_442', $Ruby30__reduce_442$322 = function $$_reduce_442(val, _values, result) {
+      $def(self, '$_reduce_451', function $$_reduce_451(val, _values, result) {
         var self = this, args = nil;
 
         
-        args = (function() {if ($truthy(self.max_numparam_stack['$has_numparams?']())) {
-          return self.builder.$numargs(self.max_numparam_stack.$top())
-        } else {
-          return val['$[]'](2)
-        }; return nil; })();
+        args = ($truthy(self.max_numparam_stack['$has_numparams?']()) ? (self.builder.$numargs(self.max_numparam_stack.$top())) : (val['$[]'](2)));
         result = [args, val['$[]'](3)];
         self.max_numparam_stack.$pop();
         self.static_env.$unextend();
         self.lexer.$cmdarg().$pop();
         return result;
-      }, $Ruby30__reduce_442$322.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_443', $Ruby30__reduce_443$323 = function $$_reduce_443(val, _values, result) {
+      $def(self, '$_reduce_452', function $$_reduce_452(val, _values, result) {
         var self = this;
 
         
-        result = [self.builder.$when(val['$[]'](0), val['$[]'](1), val['$[]'](2), val['$[]'](3))].concat(Opal.to_a(val['$[]'](4)));
+        result = [self.builder.$when(val['$[]'](0), val['$[]'](1), val['$[]'](2), val['$[]'](3))].concat($to_a(val['$[]'](4)));
         return result;
-      }, $Ruby30__reduce_443$323.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_444', $Ruby30__reduce_444$324 = function $$_reduce_444(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_453', function $$_reduce_453(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_444$324.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_446', $Ruby30__reduce_446$325 = function $$_reduce_446(val, _values, result) {
+      $def(self, '$_reduce_455', function $$_reduce_455(val, _values, result) {
         var self = this, $writer = nil;
 
         
         
         $writer = ["expr_beg"];
-        $send(self.lexer, 'state=', Opal.to_a($writer));
+        $send(self.lexer, 'state=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         
         $writer = [false];
-        $send(self.lexer, 'command_start=', Opal.to_a($writer));
+        $send(self.lexer, 'command_start=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         self.pattern_variables.$push();
         self.pattern_hash_keys.$push();
         result = self.context.$in_kwarg();
         
         $writer = [true];
-        $send(self.context, 'in_kwarg=', Opal.to_a($writer));
+        $send(self.context, 'in_kwarg=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_446$325.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_447', $Ruby30__reduce_447$326 = function $$_reduce_447(val, _values, result) {
+      $def(self, '$_reduce_456', function $$_reduce_456(val, _values, result) {
         var self = this, $writer = nil;
 
         
@@ -26109,127 +23258,125 @@ Opal.modules["parser/ruby30"] = function(Opal) {
         self.pattern_hash_keys.$pop();
         
         $writer = [val['$[]'](1)];
-        $send(self.context, 'in_kwarg=', Opal.to_a($writer));
+        $send(self.context, 'in_kwarg=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_447$326.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_448', $Ruby30__reduce_448$327 = function $$_reduce_448(val, _values, result) {
+      $def(self, '$_reduce_457', function $$_reduce_457(val, _values, result) {
         var self = this;
 
         
-        result = [$send(self.builder, 'in_pattern', [val['$[]'](0)].concat(Opal.to_a(val['$[]'](2))).concat([val['$[]'](3), val['$[]'](5)]))].concat(Opal.to_a(val['$[]'](6)));
+        result = [$send(self.builder, 'in_pattern', [val['$[]'](0)].concat($to_a(val['$[]'](2))).concat([val['$[]'](3), val['$[]'](5)]))].concat($to_a(val['$[]'](6)));
         return result;
-      }, $Ruby30__reduce_448$327.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_449', $Ruby30__reduce_449$328 = function $$_reduce_449(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_458', function $$_reduce_458(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_449$328.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_451', $Ruby30__reduce_451$329 = function $$_reduce_451(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_460', function $$_reduce_460(val, _values, result) {
+        
         
         result = [val['$[]'](0), nil];
         return result;
-      }, $Ruby30__reduce_451$329.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_452', $Ruby30__reduce_452$330 = function $$_reduce_452(val, _values, result) {
+      $def(self, '$_reduce_461', function $$_reduce_461(val, _values, result) {
         var self = this;
 
         
         result = [val['$[]'](0), self.builder.$if_guard(val['$[]'](1), val['$[]'](2))];
         return result;
-      }, $Ruby30__reduce_452$330.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_453', $Ruby30__reduce_453$331 = function $$_reduce_453(val, _values, result) {
+      $def(self, '$_reduce_462', function $$_reduce_462(val, _values, result) {
         var self = this;
 
         
         result = [val['$[]'](0), self.builder.$unless_guard(val['$[]'](1), val['$[]'](2))];
         return result;
-      }, $Ruby30__reduce_453$331.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_455', $Ruby30__reduce_455$332 = function $$_reduce_455(val, _values, result) {
+      $def(self, '$_reduce_464', function $$_reduce_464(val, _values, result) {
         var self = this, item = nil;
 
         
         item = self.builder.$match_with_trailing_comma(val['$[]'](0), val['$[]'](1));
         result = self.builder.$array_pattern(nil, [item], nil);
         return result;
-      }, $Ruby30__reduce_455$332.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_456', $Ruby30__reduce_456$333 = function $$_reduce_456(val, _values, result) {
+      $def(self, '$_reduce_465', function $$_reduce_465(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$array_pattern(nil, [val['$[]'](0)].$concat(val['$[]'](2)), nil);
         return result;
-      }, $Ruby30__reduce_456$333.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_457', $Ruby30__reduce_457$334 = function $$_reduce_457(val, _values, result) {
+      $def(self, '$_reduce_466', function $$_reduce_466(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$find_pattern(nil, val['$[]'](0), nil);
         return result;
-      }, $Ruby30__reduce_457$334.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_458', $Ruby30__reduce_458$335 = function $$_reduce_458(val, _values, result) {
+      $def(self, '$_reduce_467', function $$_reduce_467(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$array_pattern(nil, val['$[]'](0), nil);
         return result;
-      }, $Ruby30__reduce_458$335.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_459', $Ruby30__reduce_459$336 = function $$_reduce_459(val, _values, result) {
+      $def(self, '$_reduce_468', function $$_reduce_468(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$hash_pattern(nil, val['$[]'](0), nil);
         return result;
-      }, $Ruby30__reduce_459$336.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_461', $Ruby30__reduce_461$337 = function $$_reduce_461(val, _values, result) {
+      $def(self, '$_reduce_470', function $$_reduce_470(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$match_as(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_461$337.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_463', $Ruby30__reduce_463$338 = function $$_reduce_463(val, _values, result) {
+      $def(self, '$_reduce_472', function $$_reduce_472(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$match_alt(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_463$338.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_465', $Ruby30__reduce_465$339 = function $$_reduce_465(val, _values, result) {
+      $def(self, '$_reduce_474', function $$_reduce_474(val, _values, result) {
         var self = this;
 
         
         result = val['$[]'](0);
         self.pattern_hash_keys.$push();
         return result;
-      }, $Ruby30__reduce_465$339.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_466', $Ruby30__reduce_466$340 = function $$_reduce_466(val, _values, result) {
+      $def(self, '$_reduce_475', function $$_reduce_475(val, _values, result) {
         var self = this;
 
         
         result = val['$[]'](0);
         self.pattern_hash_keys.$push();
         return result;
-      }, $Ruby30__reduce_466$340.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_468', $Ruby30__reduce_468$341 = function $$_reduce_468(val, _values, result) {
+      $def(self, '$_reduce_478', function $$_reduce_478(val, _values, result) {
         var self = this, pattern = nil;
 
         
@@ -26237,9 +23384,9 @@ Opal.modules["parser/ruby30"] = function(Opal) {
         pattern = self.builder.$array_pattern(nil, val['$[]'](2), nil);
         result = self.builder.$const_pattern(val['$[]'](0), val['$[]'](1), pattern, val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_468$341.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_469', $Ruby30__reduce_469$342 = function $$_reduce_469(val, _values, result) {
+      $def(self, '$_reduce_479', function $$_reduce_479(val, _values, result) {
         var self = this, pattern = nil;
 
         
@@ -26247,9 +23394,9 @@ Opal.modules["parser/ruby30"] = function(Opal) {
         pattern = self.builder.$find_pattern(nil, val['$[]'](2), nil);
         result = self.builder.$const_pattern(val['$[]'](0), val['$[]'](1), pattern, val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_469$342.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_470', $Ruby30__reduce_470$343 = function $$_reduce_470(val, _values, result) {
+      $def(self, '$_reduce_480', function $$_reduce_480(val, _values, result) {
         var self = this, pattern = nil;
 
         
@@ -26257,18 +23404,18 @@ Opal.modules["parser/ruby30"] = function(Opal) {
         pattern = self.builder.$hash_pattern(nil, val['$[]'](2), nil);
         result = self.builder.$const_pattern(val['$[]'](0), val['$[]'](1), pattern, val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_470$343.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_471', $Ruby30__reduce_471$344 = function $$_reduce_471(val, _values, result) {
+      $def(self, '$_reduce_481', function $$_reduce_481(val, _values, result) {
         var self = this, pattern = nil;
 
         
         pattern = self.builder.$array_pattern(val['$[]'](1), nil, val['$[]'](2));
         result = self.builder.$const_pattern(val['$[]'](0), val['$[]'](1), pattern, val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_471$344.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_472', $Ruby30__reduce_472$345 = function $$_reduce_472(val, _values, result) {
+      $def(self, '$_reduce_482', function $$_reduce_482(val, _values, result) {
         var self = this, pattern = nil;
 
         
@@ -26276,9 +23423,9 @@ Opal.modules["parser/ruby30"] = function(Opal) {
         pattern = self.builder.$array_pattern(nil, val['$[]'](2), nil);
         result = self.builder.$const_pattern(val['$[]'](0), val['$[]'](1), pattern, val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_472$345.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_473', $Ruby30__reduce_473$346 = function $$_reduce_473(val, _values, result) {
+      $def(self, '$_reduce_483', function $$_reduce_483(val, _values, result) {
         var self = this, pattern = nil;
 
         
@@ -26286,9 +23433,9 @@ Opal.modules["parser/ruby30"] = function(Opal) {
         pattern = self.builder.$find_pattern(nil, val['$[]'](2), nil);
         result = self.builder.$const_pattern(val['$[]'](0), val['$[]'](1), pattern, val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_473$346.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_474', $Ruby30__reduce_474$347 = function $$_reduce_474(val, _values, result) {
+      $def(self, '$_reduce_484', function $$_reduce_484(val, _values, result) {
         var self = this, pattern = nil;
 
         
@@ -26296,42 +23443,42 @@ Opal.modules["parser/ruby30"] = function(Opal) {
         pattern = self.builder.$hash_pattern(nil, val['$[]'](2), nil);
         result = self.builder.$const_pattern(val['$[]'](0), val['$[]'](1), pattern, val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_474$347.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_475', $Ruby30__reduce_475$348 = function $$_reduce_475(val, _values, result) {
+      $def(self, '$_reduce_485', function $$_reduce_485(val, _values, result) {
         var self = this, pattern = nil;
 
         
         pattern = self.builder.$array_pattern(val['$[]'](1), nil, val['$[]'](2));
         result = self.builder.$const_pattern(val['$[]'](0), val['$[]'](1), pattern, val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_475$348.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_476', $Ruby30__reduce_476$349 = function $$_reduce_476(val, _values, result) {
+      $def(self, '$_reduce_486', function $$_reduce_486(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$array_pattern(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_476$349.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_477', $Ruby30__reduce_477$350 = function $$_reduce_477(val, _values, result) {
+      $def(self, '$_reduce_487', function $$_reduce_487(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$find_pattern(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_477$350.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_478', $Ruby30__reduce_478$351 = function $$_reduce_478(val, _values, result) {
+      $def(self, '$_reduce_488', function $$_reduce_488(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$array_pattern(val['$[]'](0), [], val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_478$351.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_479', $Ruby30__reduce_479$352 = function $$_reduce_479(val, _values, result) {
+      $def(self, '$_reduce_489', function $$_reduce_489(val, _values, result) {
         var self = this, $writer = nil;
 
         
@@ -26339,684 +23486,667 @@ Opal.modules["parser/ruby30"] = function(Opal) {
         result = self.context.$in_kwarg();
         
         $writer = [false];
-        $send(self.context, 'in_kwarg=', Opal.to_a($writer));
+        $send(self.context, 'in_kwarg=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_479$352.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_480', $Ruby30__reduce_480$353 = function $$_reduce_480(val, _values, result) {
+      $def(self, '$_reduce_490', function $$_reduce_490(val, _values, result) {
         var self = this, $writer = nil;
 
         
         self.pattern_hash_keys.$pop();
         
         $writer = [val['$[]'](1)];
-        $send(self.context, 'in_kwarg=', Opal.to_a($writer));
+        $send(self.context, 'in_kwarg=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         result = self.builder.$hash_pattern(val['$[]'](0), val['$[]'](2), val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_480$353.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_481', $Ruby30__reduce_481$354 = function $$_reduce_481(val, _values, result) {
+      $def(self, '$_reduce_491', function $$_reduce_491(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$hash_pattern(val['$[]'](0), [], val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_481$354.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_482', $Ruby30__reduce_482$355 = function $$_reduce_482(val, _values, result) {
+      $def(self, '$_reduce_492', function $$_reduce_492(val, _values, result) {
         var self = this;
 
         
         self.pattern_hash_keys.$push();
         return result;
-      }, $Ruby30__reduce_482$355.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_483', $Ruby30__reduce_483$356 = function $$_reduce_483(val, _values, result) {
+      $def(self, '$_reduce_493', function $$_reduce_493(val, _values, result) {
         var self = this;
 
         
         self.pattern_hash_keys.$pop();
         result = self.builder.$begin(val['$[]'](0), val['$[]'](2), val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_483$356.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_484', $Ruby30__reduce_484$357 = function $$_reduce_484(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_494', function $$_reduce_494(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_484$357.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_485', $Ruby30__reduce_485$358 = function $$_reduce_485(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_495', function $$_reduce_495(val, _values, result) {
+        
         
         result = val['$[]'](0);
         return result;
-      }, $Ruby30__reduce_485$358.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_486', $Ruby30__reduce_486$359 = function $$_reduce_486(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_496', function $$_reduce_496(val, _values, result) {
+        
         
-        result = [].concat(Opal.to_a(val['$[]'](0))).concat([val['$[]'](1)]);
+        result = [].concat($to_a(val['$[]'](0))).concat([val['$[]'](1)]);
         return result;
-      }, $Ruby30__reduce_486$359.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_487', $Ruby30__reduce_487$360 = function $$_reduce_487(val, _values, result) {
+      $def(self, '$_reduce_497', function $$_reduce_497(val, _values, result) {
         var self = this, match_rest = nil;
 
         
         match_rest = self.builder.$match_rest(val['$[]'](1), val['$[]'](2));
-        result = [].concat(Opal.to_a(val['$[]'](0))).concat([match_rest]);
+        result = [].concat($to_a(val['$[]'](0))).concat([match_rest]);
         return result;
-      }, $Ruby30__reduce_487$360.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_488', $Ruby30__reduce_488$361 = function $$_reduce_488(val, _values, result) {
+      $def(self, '$_reduce_498', function $$_reduce_498(val, _values, result) {
         var self = this, match_rest = nil;
 
         
         match_rest = self.builder.$match_rest(val['$[]'](1), val['$[]'](2));
-        result = [].concat(Opal.to_a(val['$[]'](0))).concat([match_rest]).concat(Opal.to_a(val['$[]'](4)));
+        result = [].concat($to_a(val['$[]'](0))).concat([match_rest]).concat($to_a(val['$[]'](4)));
         return result;
-      }, $Ruby30__reduce_488$361.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_489', $Ruby30__reduce_489$362 = function $$_reduce_489(val, _values, result) {
+      $def(self, '$_reduce_499', function $$_reduce_499(val, _values, result) {
         var self = this;
 
         
-        result = [].concat(Opal.to_a(val['$[]'](0))).concat([self.builder.$match_rest(val['$[]'](1))]);
+        result = [].concat($to_a(val['$[]'](0))).concat([self.builder.$match_rest(val['$[]'](1))]);
         return result;
-      }, $Ruby30__reduce_489$362.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_490', $Ruby30__reduce_490$363 = function $$_reduce_490(val, _values, result) {
+      $def(self, '$_reduce_500', function $$_reduce_500(val, _values, result) {
         var self = this;
 
         
-        result = [].concat(Opal.to_a(val['$[]'](0))).concat([self.builder.$match_rest(val['$[]'](1))]).concat(Opal.to_a(val['$[]'](3)));
+        result = [].concat($to_a(val['$[]'](0))).concat([self.builder.$match_rest(val['$[]'](1))]).concat($to_a(val['$[]'](3)));
         return result;
-      }, $Ruby30__reduce_490$363.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_492', $Ruby30__reduce_492$364 = function $$_reduce_492(val, _values, result) {
+      $def(self, '$_reduce_502', function $$_reduce_502(val, _values, result) {
         var self = this, item = nil;
 
         
         item = self.builder.$match_with_trailing_comma(val['$[]'](0), val['$[]'](1));
         result = [item];
         return result;
-      }, $Ruby30__reduce_492$364.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_493', $Ruby30__reduce_493$365 = function $$_reduce_493(val, _values, result) {
+      $def(self, '$_reduce_503', function $$_reduce_503(val, _values, result) {
         var self = this, last_item = nil;
 
         
         last_item = self.builder.$match_with_trailing_comma(val['$[]'](1), val['$[]'](2));
-        result = [].concat(Opal.to_a(val['$[]'](0))).concat([last_item]);
+        result = [].concat($to_a(val['$[]'](0))).concat([last_item]);
         return result;
-      }, $Ruby30__reduce_493$365.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_494', $Ruby30__reduce_494$366 = function $$_reduce_494(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_504', function $$_reduce_504(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_494$366.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_495', $Ruby30__reduce_495$367 = function $$_reduce_495(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_505', function $$_reduce_505(val, _values, result) {
+        
         
-        result = [val['$[]'](0)].concat(Opal.to_a(val['$[]'](2)));
+        result = [val['$[]'](0)].concat($to_a(val['$[]'](2)));
         return result;
-      }, $Ruby30__reduce_495$367.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_496', $Ruby30__reduce_496$368 = function $$_reduce_496(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_506', function $$_reduce_506(val, _values, result) {
         
-        result = [val['$[]'](0)].concat(Opal.to_a(val['$[]'](2))).concat([val['$[]'](4)]);
+        
+        result = [val['$[]'](0)].concat($to_a(val['$[]'](2))).concat([val['$[]'](4)]);
         return result;
-      }, $Ruby30__reduce_496$368.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_497', $Ruby30__reduce_497$369 = function $$_reduce_497(val, _values, result) {
+      $def(self, '$_reduce_507', function $$_reduce_507(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$match_rest(val['$[]'](0), val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_497$369.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_498', $Ruby30__reduce_498$370 = function $$_reduce_498(val, _values, result) {
+      $def(self, '$_reduce_508', function $$_reduce_508(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$match_rest(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_498$370.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_499', $Ruby30__reduce_499$371 = function $$_reduce_499(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_509', function $$_reduce_509(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_499$371.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_500', $Ruby30__reduce_500$372 = function $$_reduce_500(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_510', function $$_reduce_510(val, _values, result) {
         
-        result = [].concat(Opal.to_a(val['$[]'](0))).concat([val['$[]'](2)]);
+        
+        result = [].concat($to_a(val['$[]'](0))).concat([val['$[]'](2)]);
         return result;
-      }, $Ruby30__reduce_500$372.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_502', $Ruby30__reduce_502$373 = function $$_reduce_502(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_512', function $$_reduce_512(val, _values, result) {
+        
         
-        result = [].concat(Opal.to_a(val['$[]'](0))).concat(Opal.to_a(val['$[]'](2)));
+        result = [].concat($to_a(val['$[]'](0))).concat($to_a(val['$[]'](2)));
         return result;
-      }, $Ruby30__reduce_502$373.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_503', $Ruby30__reduce_503$374 = function $$_reduce_503(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_513', function $$_reduce_513(val, _values, result) {
+        
         
         result = val['$[]'](0);
         return result;
-      }, $Ruby30__reduce_503$374.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_504', $Ruby30__reduce_504$375 = function $$_reduce_504(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_514', function $$_reduce_514(val, _values, result) {
+        
         
         result = val['$[]'](0);
         return result;
-      }, $Ruby30__reduce_504$375.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_505', $Ruby30__reduce_505$376 = function $$_reduce_505(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_515', function $$_reduce_515(val, _values, result) {
+        
         
         result = val['$[]'](0);
         return result;
-      }, $Ruby30__reduce_505$376.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_506', $Ruby30__reduce_506$377 = function $$_reduce_506(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_516', function $$_reduce_516(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_506$377.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_507', $Ruby30__reduce_507$378 = function $$_reduce_507(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_517', function $$_reduce_517(val, _values, result) {
         
-        result = [].concat(Opal.to_a(val['$[]'](0))).concat([val['$[]'](2)]);
+        
+        result = [].concat($to_a(val['$[]'](0))).concat([val['$[]'](2)]);
         return result;
-      }, $Ruby30__reduce_507$378.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_508', $Ruby30__reduce_508$379 = function $$_reduce_508(val, _values, result) {
+      $def(self, '$_reduce_518', function $$_reduce_518(val, _values, result) {
         var self = this;
 
         
-        result = $send(self.builder, 'match_pair', Opal.to_a(val['$[]'](0)).concat([val['$[]'](1)]));
+        result = $send(self.builder, 'match_pair', $to_a(val['$[]'](0)).concat([val['$[]'](1)]));
         return result;
-      }, $Ruby30__reduce_508$379.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_509', $Ruby30__reduce_509$380 = function $$_reduce_509(val, _values, result) {
+      $def(self, '$_reduce_519', function $$_reduce_519(val, _values, result) {
         var self = this;
 
         
-        result = $send(self.builder, 'match_label', Opal.to_a(val['$[]'](0)));
+        result = $send(self.builder, 'match_label', $to_a(val['$[]'](0)));
         return result;
-      }, $Ruby30__reduce_509$380.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_510', $Ruby30__reduce_510$381 = function $$_reduce_510(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_520', function $$_reduce_520(val, _values, result) {
+        
         
         result = ["label", val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_510$381.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_511', $Ruby30__reduce_511$382 = function $$_reduce_511(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_521', function $$_reduce_521(val, _values, result) {
+        
         
         result = ["quoted", [val['$[]'](0), val['$[]'](1), val['$[]'](2)]];
         return result;
-      }, $Ruby30__reduce_511$382.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_512', $Ruby30__reduce_512$383 = function $$_reduce_512(val, _values, result) {
+      $def(self, '$_reduce_522', function $$_reduce_522(val, _values, result) {
         var self = this;
 
         
         result = [self.builder.$match_rest(val['$[]'](0), val['$[]'](1))];
         return result;
-      }, $Ruby30__reduce_512$383.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_513', $Ruby30__reduce_513$384 = function $$_reduce_513(val, _values, result) {
+      $def(self, '$_reduce_523', function $$_reduce_523(val, _values, result) {
         var self = this;
 
         
         result = [self.builder.$match_rest(val['$[]'](0), nil)];
         return result;
-      }, $Ruby30__reduce_513$384.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_514', $Ruby30__reduce_514$385 = function $$_reduce_514(val, _values, result) {
+      $def(self, '$_reduce_524', function $$_reduce_524(val, _values, result) {
         var self = this;
 
         
         result = [self.builder.$match_nil_pattern(val['$[]'](0), val['$[]'](1))];
         return result;
-      }, $Ruby30__reduce_514$385.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_518', $Ruby30__reduce_518$386 = function $$_reduce_518(val, _values, result) {
+      $def(self, '$_reduce_528', function $$_reduce_528(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$range_inclusive(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_518$386.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_519', $Ruby30__reduce_519$387 = function $$_reduce_519(val, _values, result) {
+      $def(self, '$_reduce_529', function $$_reduce_529(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$range_exclusive(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_519$387.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_520', $Ruby30__reduce_520$388 = function $$_reduce_520(val, _values, result) {
+      $def(self, '$_reduce_530', function $$_reduce_530(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$range_inclusive(val['$[]'](0), val['$[]'](1), nil);
         return result;
-      }, $Ruby30__reduce_520$388.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_521', $Ruby30__reduce_521$389 = function $$_reduce_521(val, _values, result) {
+      $def(self, '$_reduce_531', function $$_reduce_531(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$range_exclusive(val['$[]'](0), val['$[]'](1), nil);
         return result;
-      }, $Ruby30__reduce_521$389.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_525', $Ruby30__reduce_525$390 = function $$_reduce_525(val, _values, result) {
+      $def(self, '$_reduce_535', function $$_reduce_535(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$range_inclusive(nil, val['$[]'](0), val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_525$390.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_526', $Ruby30__reduce_526$391 = function $$_reduce_526(val, _values, result) {
+      $def(self, '$_reduce_536', function $$_reduce_536(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$range_exclusive(nil, val['$[]'](0), val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_526$391.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_535', $Ruby30__reduce_535$392 = function $$_reduce_535(val, _values, result) {
+      $def(self, '$_reduce_545', function $$_reduce_545(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$accessible(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_535$392.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_537', $Ruby30__reduce_537$393 = function $$_reduce_537(val, _values, result) {
+      $def(self, '$_reduce_547', function $$_reduce_547(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$assignable(self.builder.$match_var(val['$[]'](0)));
         return result;
-      }, $Ruby30__reduce_537$393.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_538', $Ruby30__reduce_538$394 = function $$_reduce_538(val, _values, result) {
+      $def(self, '$_reduce_548', function $$_reduce_548(val, _values, result) {
         var self = this, name = nil, lvar = nil;
 
         
         name = val['$[]'](1)['$[]'](0);
-        if ($truthy(self.$static_env()['$declared?'](name))) {
-        } else {
+        if (!$truthy(self.$static_env()['$declared?'](name))) {
           self.$diagnostic("error", "undefined_lvar", $hash2(["name"], {"name": name}), val['$[]'](1))
         };
         lvar = self.builder.$accessible(self.builder.$ident(val['$[]'](1)));
         result = self.builder.$pin(val['$[]'](0), lvar);
         return result;
-      }, $Ruby30__reduce_538$394.$$arity = 3);
+      }, 3);
+      
+      $def(self, '$_reduce_549', function $$_reduce_549(val, _values, result) {
+        var self = this, non_lvar = nil;
+
+        
+        non_lvar = self.builder.$accessible(val['$[]'](1));
+        result = self.builder.$pin(val['$[]'](0), non_lvar);
+        return result;
+      }, 3);
+      
+      $def(self, '$_reduce_550', function $$_reduce_550(val, _values, result) {
+        var self = this, expr = nil;
+
+        
+        expr = self.builder.$begin(val['$[]'](1), val['$[]'](2), val['$[]'](3));
+        result = self.builder.$pin(val['$[]'](0), expr);
+        return result;
+      }, 3);
       
-      Opal.def(self, '$_reduce_539', $Ruby30__reduce_539$395 = function $$_reduce_539(val, _values, result) {
+      $def(self, '$_reduce_551', function $$_reduce_551(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$const_global(val['$[]'](0), val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_539$395.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_540', $Ruby30__reduce_540$396 = function $$_reduce_540(val, _values, result) {
+      $def(self, '$_reduce_552', function $$_reduce_552(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$const_fetch(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_540$396.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_541', $Ruby30__reduce_541$397 = function $$_reduce_541(val, _values, result) {
+      $def(self, '$_reduce_553', function $$_reduce_553(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$const(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_541$397.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_542', $Ruby30__reduce_542$398 = function $$_reduce_542(val, _values, result) {
+      $def(self, '$_reduce_554', function $$_reduce_554(val, _values, result) {
         var $a, $b, self = this, assoc_t = nil, exc_var = nil, exc_list = nil;
 
         
-        $b = val['$[]'](2), $a = Opal.to_ary($b), (assoc_t = ($a[0] == null ? nil : $a[0])), (exc_var = ($a[1] == null ? nil : $a[1])), $b;
+        $b = val['$[]'](2), $a = $to_ary($b), (assoc_t = ($a[0] == null ? nil : $a[0])), (exc_var = ($a[1] == null ? nil : $a[1])), $b;
         if ($truthy(val['$[]'](1))) {
-          exc_list = self.builder.$array(nil, val['$[]'](1), nil)};
-        result = [self.builder.$rescue_body(val['$[]'](0), exc_list, assoc_t, exc_var, val['$[]'](3), val['$[]'](4))].concat(Opal.to_a(val['$[]'](5)));
+          exc_list = self.builder.$array(nil, val['$[]'](1), nil)
+        };
+        result = [self.builder.$rescue_body(val['$[]'](0), exc_list, assoc_t, exc_var, val['$[]'](3), val['$[]'](4))].concat($to_a(val['$[]'](5)));
         return result;
-      }, $Ruby30__reduce_542$398.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_543', $Ruby30__reduce_543$399 = function $$_reduce_543(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_555', function $$_reduce_555(val, _values, result) {
+        
         
         result = [];
         return result;
-      }, $Ruby30__reduce_543$399.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_544', $Ruby30__reduce_544$400 = function $$_reduce_544(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_556', function $$_reduce_556(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_544$400.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_547', $Ruby30__reduce_547$401 = function $$_reduce_547(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_559', function $$_reduce_559(val, _values, result) {
+        
         
         result = [val['$[]'](0), val['$[]'](1)];
         return result;
-      }, $Ruby30__reduce_547$401.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_549', $Ruby30__reduce_549$402 = function $$_reduce_549(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_561', function $$_reduce_561(val, _values, result) {
+        
         
         result = [val['$[]'](0), val['$[]'](1)];
         return result;
-      }, $Ruby30__reduce_549$402.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_553', $Ruby30__reduce_553$403 = function $$_reduce_553(val, _values, result) {
+      $def(self, '$_reduce_565', function $$_reduce_565(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$string_compose(nil, val['$[]'](0), nil);
         return result;
-      }, $Ruby30__reduce_553$403.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_554', $Ruby30__reduce_554$404 = function $$_reduce_554(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_566', function $$_reduce_566(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_554$404.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_555', $Ruby30__reduce_555$405 = function $$_reduce_555(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_567', function $$_reduce_567(val, _values, result) {
+        
         
         result = val['$[]'](0)['$<<'](val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_555$405.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_556', $Ruby30__reduce_556$406 = function $$_reduce_556(val, _values, result) {
+      $def(self, '$_reduce_568', function $$_reduce_568(val, _values, result) {
         var self = this, string = nil;
 
         
         string = self.builder.$string_compose(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         result = self.builder.$dedent_string(string, self.lexer.$dedent_level());
         return result;
-      }, $Ruby30__reduce_556$406.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_557', $Ruby30__reduce_557$407 = function $$_reduce_557(val, _values, result) {
+      $def(self, '$_reduce_569', function $$_reduce_569(val, _values, result) {
         var self = this, string = nil;
 
         
         string = self.builder.$string(val['$[]'](0));
         result = self.builder.$dedent_string(string, self.lexer.$dedent_level());
         return result;
-      }, $Ruby30__reduce_557$407.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_558', $Ruby30__reduce_558$408 = function $$_reduce_558(val, _values, result) {
+      $def(self, '$_reduce_570', function $$_reduce_570(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$character(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_558$408.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_559', $Ruby30__reduce_559$409 = function $$_reduce_559(val, _values, result) {
+      $def(self, '$_reduce_571', function $$_reduce_571(val, _values, result) {
         var self = this, string = nil;
 
         
         string = self.builder.$xstring_compose(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         result = self.builder.$dedent_string(string, self.lexer.$dedent_level());
         return result;
-      }, $Ruby30__reduce_559$409.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_560', $Ruby30__reduce_560$410 = function $$_reduce_560(val, _values, result) {
+      $def(self, '$_reduce_572', function $$_reduce_572(val, _values, result) {
         var self = this, opts = nil;
 
         
         opts = self.builder.$regexp_options(val['$[]'](3));
         result = self.builder.$regexp_compose(val['$[]'](0), val['$[]'](1), val['$[]'](2), opts);
         return result;
-      }, $Ruby30__reduce_560$410.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_561', $Ruby30__reduce_561$411 = function $$_reduce_561(val, _values, result) {
+      $def(self, '$_reduce_573', function $$_reduce_573(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$words_compose(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_561$411.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_562', $Ruby30__reduce_562$412 = function $$_reduce_562(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_574', function $$_reduce_574(val, _values, result) {
+        
         
         result = [];
         return result;
-      }, $Ruby30__reduce_562$412.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_563', $Ruby30__reduce_563$413 = function $$_reduce_563(val, _values, result) {
+      $def(self, '$_reduce_575', function $$_reduce_575(val, _values, result) {
         var self = this;
 
         
         result = val['$[]'](0)['$<<'](self.builder.$word(val['$[]'](1)));
         return result;
-      }, $Ruby30__reduce_563$413.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_564', $Ruby30__reduce_564$414 = function $$_reduce_564(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_576', function $$_reduce_576(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_564$414.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_565', $Ruby30__reduce_565$415 = function $$_reduce_565(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_577', function $$_reduce_577(val, _values, result) {
+        
         
         result = val['$[]'](0)['$<<'](val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_565$415.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_566', $Ruby30__reduce_566$416 = function $$_reduce_566(val, _values, result) {
+      $def(self, '$_reduce_578', function $$_reduce_578(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$symbols_compose(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_566$416.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_567', $Ruby30__reduce_567$417 = function $$_reduce_567(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_579', function $$_reduce_579(val, _values, result) {
+        
         
         result = [];
         return result;
-      }, $Ruby30__reduce_567$417.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_568', $Ruby30__reduce_568$418 = function $$_reduce_568(val, _values, result) {
+      $def(self, '$_reduce_580', function $$_reduce_580(val, _values, result) {
         var self = this;
 
         
         result = val['$[]'](0)['$<<'](self.builder.$word(val['$[]'](1)));
         return result;
-      }, $Ruby30__reduce_568$418.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_569', $Ruby30__reduce_569$419 = function $$_reduce_569(val, _values, result) {
+      $def(self, '$_reduce_581', function $$_reduce_581(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$words_compose(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_569$419.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_570', $Ruby30__reduce_570$420 = function $$_reduce_570(val, _values, result) {
+      $def(self, '$_reduce_582', function $$_reduce_582(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$symbols_compose(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_570$420.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_571', $Ruby30__reduce_571$421 = function $$_reduce_571(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_583', function $$_reduce_583(val, _values, result) {
+        
         
         result = [];
         return result;
-      }, $Ruby30__reduce_571$421.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_572', $Ruby30__reduce_572$422 = function $$_reduce_572(val, _values, result) {
+      $def(self, '$_reduce_584', function $$_reduce_584(val, _values, result) {
         var self = this;
 
         
         result = val['$[]'](0)['$<<'](self.builder.$string_internal(val['$[]'](1)));
         return result;
-      }, $Ruby30__reduce_572$422.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_573', $Ruby30__reduce_573$423 = function $$_reduce_573(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_585', function $$_reduce_585(val, _values, result) {
+        
         
         result = [];
         return result;
-      }, $Ruby30__reduce_573$423.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_574', $Ruby30__reduce_574$424 = function $$_reduce_574(val, _values, result) {
+      $def(self, '$_reduce_586', function $$_reduce_586(val, _values, result) {
         var self = this;
 
         
         result = val['$[]'](0)['$<<'](self.builder.$symbol_internal(val['$[]'](1)));
         return result;
-      }, $Ruby30__reduce_574$424.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_575', $Ruby30__reduce_575$425 = function $$_reduce_575(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_587', function $$_reduce_587(val, _values, result) {
+        
         
         result = [];
         return result;
-      }, $Ruby30__reduce_575$425.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_576', $Ruby30__reduce_576$426 = function $$_reduce_576(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_588', function $$_reduce_588(val, _values, result) {
+        
         
         result = val['$[]'](0)['$<<'](val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_576$426.$$arity = 3);
-      
-      Opal.def(self, '$_reduce_577', $Ruby30__reduce_577$427 = function $$_reduce_577(val, _values, result) {
-        var self = this;
-
+      }, 3);
+      
+      $def(self, '$_reduce_589', function $$_reduce_589(val, _values, result) {
+        
         
         result = [];
         return result;
-      }, $Ruby30__reduce_577$427.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_578', $Ruby30__reduce_578$428 = function $$_reduce_578(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_590', function $$_reduce_590(val, _values, result) {
+        
         
         result = val['$[]'](0)['$<<'](val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_578$428.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_579', $Ruby30__reduce_579$429 = function $$_reduce_579(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_591', function $$_reduce_591(val, _values, result) {
+        
         
         result = [];
         return result;
-      }, $Ruby30__reduce_579$429.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_580', $Ruby30__reduce_580$430 = function $$_reduce_580(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_592', function $$_reduce_592(val, _values, result) {
+        
         
         result = val['$[]'](0)['$<<'](val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_580$430.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_581', $Ruby30__reduce_581$431 = function $$_reduce_581(val, _values, result) {
+      $def(self, '$_reduce_593', function $$_reduce_593(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$string_internal(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_581$431.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_582', $Ruby30__reduce_582$432 = function $$_reduce_582(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_594', function $$_reduce_594(val, _values, result) {
+        
         
         result = val['$[]'](1);
         return result;
-      }, $Ruby30__reduce_582$432.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_583', $Ruby30__reduce_583$433 = function $$_reduce_583(val, _values, result) {
+      $def(self, '$_reduce_595', function $$_reduce_595(val, _values, result) {
         var self = this;
 
         
         self.lexer.$cmdarg().$push(false);
         self.lexer.$cond().$push(false);
         return result;
-      }, $Ruby30__reduce_583$433.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_584', $Ruby30__reduce_584$434 = function $$_reduce_584(val, _values, result) {
+      $def(self, '$_reduce_596', function $$_reduce_596(val, _values, result) {
         var self = this;
 
         
@@ -27024,65 +24154,64 @@ Opal.modules["parser/ruby30"] = function(Opal) {
         self.lexer.$cond().$pop();
         result = self.builder.$begin(val['$[]'](0), val['$[]'](2), val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_584$434.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_585', $Ruby30__reduce_585$435 = function $$_reduce_585(val, _values, result) {
+      $def(self, '$_reduce_597', function $$_reduce_597(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$gvar(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_585$435.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_586', $Ruby30__reduce_586$436 = function $$_reduce_586(val, _values, result) {
+      $def(self, '$_reduce_598', function $$_reduce_598(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$ivar(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_586$436.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_587', $Ruby30__reduce_587$437 = function $$_reduce_587(val, _values, result) {
+      $def(self, '$_reduce_599', function $$_reduce_599(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$cvar(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_587$437.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_591', $Ruby30__reduce_591$438 = function $$_reduce_591(val, _values, result) {
+      $def(self, '$_reduce_603', function $$_reduce_603(val, _values, result) {
         var self = this, $writer = nil;
 
         
         
         $writer = ["expr_end"];
-        $send(self.lexer, 'state=', Opal.to_a($writer));
+        $send(self.lexer, 'state=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         result = self.builder.$symbol(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_591$438.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_592', $Ruby30__reduce_592$439 = function $$_reduce_592(val, _values, result) {
+      $def(self, '$_reduce_604', function $$_reduce_604(val, _values, result) {
         var self = this, $writer = nil;
 
         
         
         $writer = ["expr_end"];
-        $send(self.lexer, 'state=', Opal.to_a($writer));
+        $send(self.lexer, 'state=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         result = self.builder.$symbol_compose(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_592$439.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_593', $Ruby30__reduce_593$440 = function $$_reduce_593(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_605', function $$_reduce_605(val, _values, result) {
+        
         
         result = val['$[]'](0);
         return result;
-      }, $Ruby30__reduce_593$440.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_594', $Ruby30__reduce_594$441 = function $$_reduce_594(val, _values, result) {
+      $def(self, '$_reduce_606', function $$_reduce_606(val, _values, result) {
         var self = this;
 
         
@@ -27092,503 +24221,505 @@ Opal.modules["parser/ruby30"] = function(Opal) {
           result = self.builder.$unary_num(val['$[]'](0), val['$[]'](1))
         };
         return result;
-      }, $Ruby30__reduce_594$441.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_595', $Ruby30__reduce_595$442 = function $$_reduce_595(val, _values, result) {
+      $def(self, '$_reduce_607', function $$_reduce_607(val, _values, result) {
         var self = this, $writer = nil;
 
         
         
         $writer = ["expr_end"];
-        $send(self.lexer, 'state=', Opal.to_a($writer));
+        $send(self.lexer, 'state=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         result = self.builder.$integer(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_595$442.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_596', $Ruby30__reduce_596$443 = function $$_reduce_596(val, _values, result) {
+      $def(self, '$_reduce_608', function $$_reduce_608(val, _values, result) {
         var self = this, $writer = nil;
 
         
         
         $writer = ["expr_end"];
-        $send(self.lexer, 'state=', Opal.to_a($writer));
+        $send(self.lexer, 'state=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         result = self.builder.$float(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_596$443.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_597', $Ruby30__reduce_597$444 = function $$_reduce_597(val, _values, result) {
+      $def(self, '$_reduce_609', function $$_reduce_609(val, _values, result) {
         var self = this, $writer = nil;
 
         
         
         $writer = ["expr_end"];
-        $send(self.lexer, 'state=', Opal.to_a($writer));
+        $send(self.lexer, 'state=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         result = self.builder.$rational(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_597$444.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_598', $Ruby30__reduce_598$445 = function $$_reduce_598(val, _values, result) {
+      $def(self, '$_reduce_610', function $$_reduce_610(val, _values, result) {
         var self = this, $writer = nil;
 
         
         
         $writer = ["expr_end"];
-        $send(self.lexer, 'state=', Opal.to_a($writer));
+        $send(self.lexer, 'state=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         result = self.builder.$complex(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_598$445.$$arity = 3);
+      }, 3);
+      
+      $def(self, '$_reduce_611', function $$_reduce_611(val, _values, result) {
+        var self = this;
+
+        
+        result = self.builder.$ivar(val['$[]'](0));
+        return result;
+      }, 3);
+      
+      $def(self, '$_reduce_612', function $$_reduce_612(val, _values, result) {
+        var self = this;
+
+        
+        result = self.builder.$gvar(val['$[]'](0));
+        return result;
+      }, 3);
+      
+      $def(self, '$_reduce_613', function $$_reduce_613(val, _values, result) {
+        var self = this;
+
+        
+        result = self.builder.$cvar(val['$[]'](0));
+        return result;
+      }, 3);
       
-      Opal.def(self, '$_reduce_599', $Ruby30__reduce_599$446 = function $$_reduce_599(val, _values, result) {
+      $def(self, '$_reduce_614', function $$_reduce_614(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$ident(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_599$446.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_600', $Ruby30__reduce_600$447 = function $$_reduce_600(val, _values, result) {
+      $def(self, '$_reduce_615', function $$_reduce_615(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$ivar(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_600$447.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_601', $Ruby30__reduce_601$448 = function $$_reduce_601(val, _values, result) {
+      $def(self, '$_reduce_616', function $$_reduce_616(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$gvar(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_601$448.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_602', $Ruby30__reduce_602$449 = function $$_reduce_602(val, _values, result) {
+      $def(self, '$_reduce_617', function $$_reduce_617(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$const(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_602$449.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_603', $Ruby30__reduce_603$450 = function $$_reduce_603(val, _values, result) {
+      $def(self, '$_reduce_618', function $$_reduce_618(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$cvar(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_603$450.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_604', $Ruby30__reduce_604$451 = function $$_reduce_604(val, _values, result) {
+      $def(self, '$_reduce_619', function $$_reduce_619(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$nil(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_604$451.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_605', $Ruby30__reduce_605$452 = function $$_reduce_605(val, _values, result) {
+      $def(self, '$_reduce_620', function $$_reduce_620(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$self(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_605$452.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_606', $Ruby30__reduce_606$453 = function $$_reduce_606(val, _values, result) {
+      $def(self, '$_reduce_621', function $$_reduce_621(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$true(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_606$453.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_607', $Ruby30__reduce_607$454 = function $$_reduce_607(val, _values, result) {
+      $def(self, '$_reduce_622', function $$_reduce_622(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$false(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_607$454.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_608', $Ruby30__reduce_608$455 = function $$_reduce_608(val, _values, result) {
+      $def(self, '$_reduce_623', function $$_reduce_623(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$__FILE__(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_608$455.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_609', $Ruby30__reduce_609$456 = function $$_reduce_609(val, _values, result) {
+      $def(self, '$_reduce_624', function $$_reduce_624(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$__LINE__(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_609$456.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_610', $Ruby30__reduce_610$457 = function $$_reduce_610(val, _values, result) {
+      $def(self, '$_reduce_625', function $$_reduce_625(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$__ENCODING__(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_610$457.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_611', $Ruby30__reduce_611$458 = function $$_reduce_611(val, _values, result) {
+      $def(self, '$_reduce_626', function $$_reduce_626(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$accessible(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_611$458.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_612', $Ruby30__reduce_612$459 = function $$_reduce_612(val, _values, result) {
+      $def(self, '$_reduce_627', function $$_reduce_627(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$accessible(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_612$459.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_613', $Ruby30__reduce_613$460 = function $$_reduce_613(val, _values, result) {
+      $def(self, '$_reduce_628', function $$_reduce_628(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$assignable(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_613$460.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_614', $Ruby30__reduce_614$461 = function $$_reduce_614(val, _values, result) {
+      $def(self, '$_reduce_629', function $$_reduce_629(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$assignable(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_614$461.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_615', $Ruby30__reduce_615$462 = function $$_reduce_615(val, _values, result) {
+      $def(self, '$_reduce_630', function $$_reduce_630(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$nth_ref(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_615$462.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_616', $Ruby30__reduce_616$463 = function $$_reduce_616(val, _values, result) {
+      $def(self, '$_reduce_631', function $$_reduce_631(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$back_ref(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_616$463.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_617', $Ruby30__reduce_617$464 = function $$_reduce_617(val, _values, result) {
+      $def(self, '$_reduce_632', function $$_reduce_632(val, _values, result) {
         var self = this, $writer = nil;
 
         
         
         $writer = ["expr_value"];
-        $send(self.lexer, 'state=', Opal.to_a($writer));
+        $send(self.lexer, 'state=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_617$464.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_618', $Ruby30__reduce_618$465 = function $$_reduce_618(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_633', function $$_reduce_633(val, _values, result) {
+        
         
         result = [val['$[]'](0), val['$[]'](2)];
         return result;
-      }, $Ruby30__reduce_618$465.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_619', $Ruby30__reduce_619$466 = function $$_reduce_619(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_634', function $$_reduce_634(val, _values, result) {
+        
         
         result = nil;
         return result;
-      }, $Ruby30__reduce_619$466.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_621', $Ruby30__reduce_621$467 = function $$_reduce_621(val, _values, result) {
-        var self = this;
+      $def(self, '$_reduce_636', function $$_reduce_636(val, _values, result) {
+        var self = this, $writer = nil;
 
         
+        
+        $writer = [false];
+        $send(self.context, 'in_argdef=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
         result = self.builder.$args(nil, [], nil);
         return result;
-      }, $Ruby30__reduce_621$467.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_622', $Ruby30__reduce_622$468 = function $$_reduce_622(val, _values, result) {
+      $def(self, '$_reduce_637', function $$_reduce_637(val, _values, result) {
         var self = this, $writer = nil;
 
         
         result = self.builder.$args(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         
         $writer = ["expr_value"];
-        $send(self.lexer, 'state=', Opal.to_a($writer));
+        $send(self.lexer, 'state=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
-        return result;
-      }, $Ruby30__reduce_622$468.$$arity = 3);
-      
-      Opal.def(self, '$_reduce_623', $Ruby30__reduce_623$469 = function $$_reduce_623(val, _values, result) {
-        var self = this, args = nil;
-
         
-        args = [].concat(Opal.to_a(val['$[]'](1))).concat([self.builder.$forward_arg(val['$[]'](3))]);
-        result = self.builder.$args(val['$[]'](0), args, val['$[]'](4));
-        self.static_env.$declare_forward_args();
+        $writer = [false];
+        $send(self.context, 'in_argdef=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_623$469.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_624', $Ruby30__reduce_624$470 = function $$_reduce_624(val, _values, result) {
+      $def(self, '$_reduce_639', function $$_reduce_639(val, _values, result) {
         var self = this, $writer = nil;
 
         
-        result = self.builder.$forward_only_args(val['$[]'](0), val['$[]'](1), val['$[]'](2));
-        self.static_env.$declare_forward_args();
+        result = self.context.$dup();
         
-        $writer = ["expr_value"];
-        $send(self.lexer, 'state=', Opal.to_a($writer));
+        $writer = [true];
+        $send(self.context, 'in_kwarg=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
-        return result;
-      }, $Ruby30__reduce_624$470.$$arity = 3);
-      
-      Opal.def(self, '$_reduce_626', $Ruby30__reduce_626$471 = function $$_reduce_626(val, _values, result) {
-        var self = this, $writer = nil;
-
-        
-        result = self.context.$in_kwarg();
         
         $writer = [true];
-        $send(self.context, 'in_kwarg=', Opal.to_a($writer));
+        $send(self.context, 'in_argdef=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $Ruby30__reduce_626$471.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_627', $Ruby30__reduce_627$472 = function $$_reduce_627(val, _values, result) {
+      $def(self, '$_reduce_640', function $$_reduce_640(val, _values, result) {
         var self = this, $writer = nil;
 
         
         
-        $writer = [val['$[]'](0)];
-        $send(self.context, 'in_kwarg=', Opal.to_a($writer));
+        $writer = [val['$[]'](0).$in_kwarg()];
+        $send(self.context, 'in_kwarg=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
+        
+        $writer = [false];
+        $send(self.context, 'in_argdef=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         result = self.builder.$args(nil, val['$[]'](1), nil);
         return result;
-      }, $Ruby30__reduce_627$472.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_628', $Ruby30__reduce_628$473 = function $$_reduce_628(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_641', function $$_reduce_641(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_628$473.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_629', $Ruby30__reduce_629$474 = function $$_reduce_629(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_642', function $$_reduce_642(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_629$474.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_630', $Ruby30__reduce_630$475 = function $$_reduce_630(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_643', function $$_reduce_643(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_630$475.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_631', $Ruby30__reduce_631$476 = function $$_reduce_631(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_644', function $$_reduce_644(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_631$476.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_632', $Ruby30__reduce_632$477 = function $$_reduce_632(val, _values, result) {
+      $def(self, '$_reduce_645', function $$_reduce_645(val, _values, result) {
         var self = this;
 
         
+        self.static_env.$declare_forward_args();
+        result = [self.builder.$forward_arg(val['$[]'](0))];
+        return result;
+      }, 3);
+      
+      $def(self, '$_reduce_646', function $$_reduce_646(val, _values, result) {
+        
+        
         result = val['$[]'](1);
         return result;
-      }, $Ruby30__reduce_632$477.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_633', $Ruby30__reduce_633$478 = function $$_reduce_633(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_647', function $$_reduce_647(val, _values, result) {
+        
         
         result = [];
         return result;
-      }, $Ruby30__reduce_633$478.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_634', $Ruby30__reduce_634$479 = function $$_reduce_634(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_648', function $$_reduce_648(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](4)).$concat(val['$[]'](5));
         return result;
-      }, $Ruby30__reduce_634$479.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_635', $Ruby30__reduce_635$480 = function $$_reduce_635(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_649', function $$_reduce_649(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](4)).$concat(val['$[]'](6)).$concat(val['$[]'](7));
         return result;
-      }, $Ruby30__reduce_635$480.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_636', $Ruby30__reduce_636$481 = function $$_reduce_636(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_650', function $$_reduce_650(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_636$481.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_637', $Ruby30__reduce_637$482 = function $$_reduce_637(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_651', function $$_reduce_651(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](4)).$concat(val['$[]'](5));
         return result;
-      }, $Ruby30__reduce_637$482.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_638', $Ruby30__reduce_638$483 = function $$_reduce_638(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_652', function $$_reduce_652(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_638$483.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_639', $Ruby30__reduce_639$484 = function $$_reduce_639(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_653', function $$_reduce_653(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](4)).$concat(val['$[]'](5));
         return result;
-      }, $Ruby30__reduce_639$484.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_640', $Ruby30__reduce_640$485 = function $$_reduce_640(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_654', function $$_reduce_654(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_640$485.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_641', $Ruby30__reduce_641$486 = function $$_reduce_641(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_655', function $$_reduce_655(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_641$486.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_642', $Ruby30__reduce_642$487 = function $$_reduce_642(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_656', function $$_reduce_656(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](4)).$concat(val['$[]'](5));
         return result;
-      }, $Ruby30__reduce_642$487.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_643', $Ruby30__reduce_643$488 = function $$_reduce_643(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_657', function $$_reduce_657(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_643$488.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_644', $Ruby30__reduce_644$489 = function $$_reduce_644(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_658', function $$_reduce_658(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_644$489.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_645', $Ruby30__reduce_645$490 = function $$_reduce_645(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_659', function $$_reduce_659(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_645$490.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_646', $Ruby30__reduce_646$491 = function $$_reduce_646(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_660', function $$_reduce_660(val, _values, result) {
+        
         
         result = val['$[]'](0).$concat(val['$[]'](2)).$concat(val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_646$491.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_647', $Ruby30__reduce_647$492 = function $$_reduce_647(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_661', function $$_reduce_661(val, _values, result) {
+        
         
         result = val['$[]'](0);
         return result;
-      }, $Ruby30__reduce_647$492.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_648', $Ruby30__reduce_648$493 = function $$_reduce_648(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_662', function $$_reduce_662(val, _values, result) {
+        
         
         result = [];
         return result;
-      }, $Ruby30__reduce_648$493.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_649', $Ruby30__reduce_649$494 = function $$_reduce_649(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_663', function $$_reduce_663(val, _values, result) {
+        
         
         result = val['$[]'](0);
         return result;
-      }, $Ruby30__reduce_649$494.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_650', $Ruby30__reduce_650$495 = function $$_reduce_650(val, _values, result) {
+      $def(self, '$_reduce_664', function $$_reduce_664(val, _values, result) {
         var self = this;
 
         
         self.$diagnostic("error", "argument_const", nil, val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_650$495.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_651', $Ruby30__reduce_651$496 = function $$_reduce_651(val, _values, result) {
+      $def(self, '$_reduce_665', function $$_reduce_665(val, _values, result) {
         var self = this;
 
         
         self.$diagnostic("error", "argument_ivar", nil, val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_651$496.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_652', $Ruby30__reduce_652$497 = function $$_reduce_652(val, _values, result) {
+      $def(self, '$_reduce_666', function $$_reduce_666(val, _values, result) {
         var self = this;
 
         
         self.$diagnostic("error", "argument_gvar", nil, val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_652$497.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_653', $Ruby30__reduce_653$498 = function $$_reduce_653(val, _values, result) {
+      $def(self, '$_reduce_667', function $$_reduce_667(val, _values, result) {
         var self = this;
 
         
         self.$diagnostic("error", "argument_cvar", nil, val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_653$498.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_655', $Ruby30__reduce_655$499 = function $$_reduce_655(val, _values, result) {
+      $def(self, '$_reduce_669', function $$_reduce_669(val, _values, result) {
         var self = this;
 
         
@@ -27596,384 +24727,402 @@ Opal.modules["parser/ruby30"] = function(Opal) {
         self.max_numparam_stack['$has_ordinary_params!']();
         result = val['$[]'](0);
         return result;
-      }, $Ruby30__reduce_655$499.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_656', $Ruby30__reduce_656$500 = function $$_reduce_656(val, _values, result) {
+      $def(self, '$_reduce_670', function $$_reduce_670(val, _values, result) {
         var self = this;
 
         
         self.current_arg_stack.$set(val['$[]'](0)['$[]'](0));
         result = val['$[]'](0);
         return result;
-      }, $Ruby30__reduce_656$500.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_657', $Ruby30__reduce_657$501 = function $$_reduce_657(val, _values, result) {
+      $def(self, '$_reduce_671', function $$_reduce_671(val, _values, result) {
         var self = this;
 
         
         self.current_arg_stack.$set(0);
         result = self.builder.$arg(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_657$501.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_658', $Ruby30__reduce_658$502 = function $$_reduce_658(val, _values, result) {
+      $def(self, '$_reduce_672', function $$_reduce_672(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$multi_lhs(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_658$502.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_659', $Ruby30__reduce_659$503 = function $$_reduce_659(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_673', function $$_reduce_673(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_659$503.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_660', $Ruby30__reduce_660$504 = function $$_reduce_660(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_674', function $$_reduce_674(val, _values, result) {
+        
         
         result = val['$[]'](0)['$<<'](val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_660$504.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_661', $Ruby30__reduce_661$505 = function $$_reduce_661(val, _values, result) {
-        var self = this;
+      $def(self, '$_reduce_675', function $$_reduce_675(val, _values, result) {
+        var self = this, $writer = nil;
 
         
         self.$check_kwarg_name(val['$[]'](0));
         self.static_env.$declare(val['$[]'](0)['$[]'](0));
         self.max_numparam_stack['$has_ordinary_params!']();
         self.current_arg_stack.$set(val['$[]'](0)['$[]'](0));
+        
+        $writer = [false];
+        $send(self.context, 'in_argdef=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
         result = val['$[]'](0);
         return result;
-      }, $Ruby30__reduce_661$505.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_662', $Ruby30__reduce_662$506 = function $$_reduce_662(val, _values, result) {
-        var self = this;
+      $def(self, '$_reduce_676', function $$_reduce_676(val, _values, result) {
+        var self = this, $writer = nil;
 
         
         self.current_arg_stack.$set(nil);
+        
+        $writer = [true];
+        $send(self.context, 'in_argdef=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
         result = self.builder.$kwoptarg(val['$[]'](0), val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_662$506.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_663', $Ruby30__reduce_663$507 = function $$_reduce_663(val, _values, result) {
-        var self = this;
+      $def(self, '$_reduce_677', function $$_reduce_677(val, _values, result) {
+        var self = this, $writer = nil;
 
         
         self.current_arg_stack.$set(nil);
+        
+        $writer = [true];
+        $send(self.context, 'in_argdef=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
         result = self.builder.$kwarg(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_663$507.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_664', $Ruby30__reduce_664$508 = function $$_reduce_664(val, _values, result) {
-        var self = this;
+      $def(self, '$_reduce_678', function $$_reduce_678(val, _values, result) {
+        var self = this, $writer = nil;
 
         
+        
+        $writer = [true];
+        $send(self.context, 'in_argdef=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
         result = self.builder.$kwoptarg(val['$[]'](0), val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_664$508.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_665', $Ruby30__reduce_665$509 = function $$_reduce_665(val, _values, result) {
-        var self = this;
+      $def(self, '$_reduce_679', function $$_reduce_679(val, _values, result) {
+        var self = this, $writer = nil;
 
         
+        
+        $writer = [true];
+        $send(self.context, 'in_argdef=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
         result = self.builder.$kwarg(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_665$509.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_666', $Ruby30__reduce_666$510 = function $$_reduce_666(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_680', function $$_reduce_680(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_666$510.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_667', $Ruby30__reduce_667$511 = function $$_reduce_667(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_681', function $$_reduce_681(val, _values, result) {
+        
         
         result = val['$[]'](0)['$<<'](val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_667$511.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_668', $Ruby30__reduce_668$512 = function $$_reduce_668(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_682', function $$_reduce_682(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_668$512.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_669', $Ruby30__reduce_669$513 = function $$_reduce_669(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_683', function $$_reduce_683(val, _values, result) {
+        
         
         result = val['$[]'](0)['$<<'](val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_669$513.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_672', $Ruby30__reduce_672$514 = function $$_reduce_672(val, _values, result) {
+      $def(self, '$_reduce_686', function $$_reduce_686(val, _values, result) {
         var self = this;
 
         
         result = [self.builder.$kwnilarg(val['$[]'](0), val['$[]'](1))];
         return result;
-      }, $Ruby30__reduce_672$514.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_673', $Ruby30__reduce_673$515 = function $$_reduce_673(val, _values, result) {
+      $def(self, '$_reduce_687', function $$_reduce_687(val, _values, result) {
         var self = this;
 
         
         self.static_env.$declare(val['$[]'](1)['$[]'](0));
         result = [self.builder.$kwrestarg(val['$[]'](0), val['$[]'](1))];
         return result;
-      }, $Ruby30__reduce_673$515.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_674', $Ruby30__reduce_674$516 = function $$_reduce_674(val, _values, result) {
+      $def(self, '$_reduce_688', function $$_reduce_688(val, _values, result) {
         var self = this;
 
         
         result = [self.builder.$kwrestarg(val['$[]'](0))];
         return result;
-      }, $Ruby30__reduce_674$516.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_675', $Ruby30__reduce_675$517 = function $$_reduce_675(val, _values, result) {
-        var self = this;
+      $def(self, '$_reduce_689', function $$_reduce_689(val, _values, result) {
+        var self = this, $writer = nil;
 
         
         self.current_arg_stack.$set(0);
+        
+        $writer = [true];
+        $send(self.context, 'in_argdef=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
         result = self.builder.$optarg(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_675$517.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_676', $Ruby30__reduce_676$518 = function $$_reduce_676(val, _values, result) {
-        var self = this;
+      $def(self, '$_reduce_690', function $$_reduce_690(val, _values, result) {
+        var self = this, $writer = nil;
 
         
         self.current_arg_stack.$set(0);
+        
+        $writer = [true];
+        $send(self.context, 'in_argdef=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
         result = self.builder.$optarg(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_676$518.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_677', $Ruby30__reduce_677$519 = function $$_reduce_677(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_691', function $$_reduce_691(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_677$519.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_678', $Ruby30__reduce_678$520 = function $$_reduce_678(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_692', function $$_reduce_692(val, _values, result) {
+        
         
         result = val['$[]'](0)['$<<'](val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_678$520.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_679', $Ruby30__reduce_679$521 = function $$_reduce_679(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_693', function $$_reduce_693(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_679$521.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_680', $Ruby30__reduce_680$522 = function $$_reduce_680(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_694', function $$_reduce_694(val, _values, result) {
+        
         
         result = val['$[]'](0)['$<<'](val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_680$522.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_683', $Ruby30__reduce_683$523 = function $$_reduce_683(val, _values, result) {
+      $def(self, '$_reduce_697', function $$_reduce_697(val, _values, result) {
         var self = this;
 
         
         self.static_env.$declare(val['$[]'](1)['$[]'](0));
         result = [self.builder.$restarg(val['$[]'](0), val['$[]'](1))];
         return result;
-      }, $Ruby30__reduce_683$523.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_684', $Ruby30__reduce_684$524 = function $$_reduce_684(val, _values, result) {
+      $def(self, '$_reduce_698', function $$_reduce_698(val, _values, result) {
         var self = this;
 
         
         result = [self.builder.$restarg(val['$[]'](0))];
         return result;
-      }, $Ruby30__reduce_684$524.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_687', $Ruby30__reduce_687$525 = function $$_reduce_687(val, _values, result) {
+      $def(self, '$_reduce_701', function $$_reduce_701(val, _values, result) {
         var self = this;
 
         
         self.static_env.$declare(val['$[]'](1)['$[]'](0));
         result = self.builder.$blockarg(val['$[]'](0), val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_687$525.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_688', $Ruby30__reduce_688$526 = function $$_reduce_688(val, _values, result) {
+      $def(self, '$_reduce_702', function $$_reduce_702(val, _values, result) {
         var self = this;
 
         
+        self.static_env.$declare_anonymous_blockarg();
+        result = self.builder.$blockarg(val['$[]'](0), nil);
+        return result;
+      }, 3);
+      
+      $def(self, '$_reduce_703', function $$_reduce_703(val, _values, result) {
+        
+        
         result = [val['$[]'](1)];
         return result;
-      }, $Ruby30__reduce_688$526.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_689', $Ruby30__reduce_689$527 = function $$_reduce_689(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_704', function $$_reduce_704(val, _values, result) {
+        
         
         result = [];
         return result;
-      }, $Ruby30__reduce_689$527.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_691', $Ruby30__reduce_691$528 = function $$_reduce_691(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_706', function $$_reduce_706(val, _values, result) {
+        
         
         result = val['$[]'](1);
         return result;
-      }, $Ruby30__reduce_691$528.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_692', $Ruby30__reduce_692$529 = function $$_reduce_692(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_707', function $$_reduce_707(val, _values, result) {
+        
         
         result = [];
         return result;
-      }, $Ruby30__reduce_692$529.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_694', $Ruby30__reduce_694$530 = function $$_reduce_694(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_709', function $$_reduce_709(val, _values, result) {
+        
         
         result = [val['$[]'](0)];
         return result;
-      }, $Ruby30__reduce_694$530.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_695', $Ruby30__reduce_695$531 = function $$_reduce_695(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_710', function $$_reduce_710(val, _values, result) {
+        
         
         result = val['$[]'](0)['$<<'](val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_695$531.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_696', $Ruby30__reduce_696$532 = function $$_reduce_696(val, _values, result) {
+      $def(self, '$_reduce_711', function $$_reduce_711(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$pair(val['$[]'](0), val['$[]'](1), val['$[]'](2));
         return result;
-      }, $Ruby30__reduce_696$532.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_697', $Ruby30__reduce_697$533 = function $$_reduce_697(val, _values, result) {
+      $def(self, '$_reduce_712', function $$_reduce_712(val, _values, result) {
         var self = this;
 
         
         result = self.builder.$pair_keyword(val['$[]'](0), val['$[]'](1));
         return result;
-      }, $Ruby30__reduce_697$533.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_698', $Ruby30__reduce_698$534 = function $$_reduce_698(val, _values, result) {
+      $def(self, '$_reduce_713', function $$_reduce_713(val, _values, result) {
         var self = this;
 
         
-        result = self.builder.$pair_quoted(val['$[]'](0), val['$[]'](1), val['$[]'](2), val['$[]'](3));
+        result = self.builder.$pair_label(val['$[]'](0));
         return result;
-      }, $Ruby30__reduce_698$534.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_699', $Ruby30__reduce_699$535 = function $$_reduce_699(val, _values, result) {
+      $def(self, '$_reduce_714', function $$_reduce_714(val, _values, result) {
         var self = this;
 
         
-        result = self.builder.$kwsplat(val['$[]'](0), val['$[]'](1));
+        result = self.builder.$pair_quoted(val['$[]'](0), val['$[]'](1), val['$[]'](2), val['$[]'](3));
         return result;
-      }, $Ruby30__reduce_699$535.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_712', $Ruby30__reduce_712$536 = function $$_reduce_712(val, _values, result) {
+      $def(self, '$_reduce_715', function $$_reduce_715(val, _values, result) {
         var self = this;
 
         
+        result = self.builder.$kwsplat(val['$[]'](0), val['$[]'](1));
+        return result;
+      }, 3);
+      
+      $def(self, '$_reduce_728', function $$_reduce_728(val, _values, result) {
+        
+        
         result = ["dot", val['$[]'](0)['$[]'](1)];
         return result;
-      }, $Ruby30__reduce_712$536.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_713', $Ruby30__reduce_713$537 = function $$_reduce_713(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_729', function $$_reduce_729(val, _values, result) {
+        
         
         result = ["anddot", val['$[]'](0)['$[]'](1)];
         return result;
-      }, $Ruby30__reduce_713$537.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_718', $Ruby30__reduce_718$538 = function $$_reduce_718(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_734', function $$_reduce_734(val, _values, result) {
+        
         
         result = val['$[]'](1);
         return result;
-      }, $Ruby30__reduce_718$538.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_719', $Ruby30__reduce_719$539 = function $$_reduce_719(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_735', function $$_reduce_735(val, _values, result) {
+        
         
         result = val['$[]'](1);
         return result;
-      }, $Ruby30__reduce_719$539.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_720', $Ruby30__reduce_720$540 = function $$_reduce_720(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_736', function $$_reduce_736(val, _values, result) {
+        
         
         result = val['$[]'](1);
         return result;
-      }, $Ruby30__reduce_720$540.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_724', $Ruby30__reduce_724$541 = function $$_reduce_724(val, _values, result) {
+      $def(self, '$_reduce_740', function $$_reduce_740(val, _values, result) {
         var self = this;
 
         
         self.$yyerrok();
         return result;
-      }, $Ruby30__reduce_724$541.$$arity = 3);
+      }, 3);
       
-      Opal.def(self, '$_reduce_728', $Ruby30__reduce_728$542 = function $$_reduce_728(val, _values, result) {
-        var self = this;
-
+      $def(self, '$_reduce_744', function $$_reduce_744(val, _values, result) {
+        
         
         result = nil;
         return result;
-      }, $Ruby30__reduce_728$542.$$arity = 3);
-      return (Opal.def(self, '$_reduce_none', $Ruby30__reduce_none$543 = function $$_reduce_none(val, _values, result) {
-        var self = this;
-
+      }, 3);
+      return $def(self, '$_reduce_none', function $$_reduce_none(val, _values, result) {
+        
         return val['$[]'](0)
-      }, $Ruby30__reduce_none$543.$$arity = 3), nil) && '_reduce_none';
-    })($nesting[0], $$$($$($nesting, 'Parser'), 'Base'), $nesting)
+      }, 3);
+    })($nesting[0], $$$($$('Parser'), 'Base'), $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/ast/builder"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $hash2 = Opal.hash2;
+Opal.modules["opal/ast/builder"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $Opal = Opal.Opal, $hash2 = Opal.hash2, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$emit_lambda=', '$-', '$new']);
+  Opal.add_stubs('require,emit_lambda=,-,new');
   
   self.$require("opal/ast/node");
-  self.$require("parser/ruby30");
+  self.$require("parser/ruby31");
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Opal');
 
@@ -27984,37 +25133,29 @@ Opal.modules["opal/ast/builder"] = function(Opal) {
 
       var $nesting = [self].concat($parent_nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'Builder');
 
-        var $nesting = [self].concat($parent_nesting), $Builder_n$1, $writer = nil;
+        var $writer = nil;
 
         
         
         $writer = [true];
-        $send(self, 'emit_lambda=', Opal.to_a($writer));
+        $send(self, 'emit_lambda=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
-        return (Opal.def(self, '$n', $Builder_n$1 = function $$n(type, children, location) {
-          var self = this;
-
-          return $$$($$$($$$('::', 'Opal'), 'AST'), 'Node').$new(type, children, $hash2(["location"], {"location": location}))
-        }, $Builder_n$1.$$arity = 3), nil) && 'n';
-      })($nesting[0], $$$($$$($$$('::', 'Parser'), 'Builders'), 'Default'), $nesting)
+        return $def(self, '$n', function $$n(type, children, location) {
+          
+          return $$$($$$($Opal, 'AST'), 'Node').$new(type, children, $hash2(["location"], {"location": location}))
+        }, 3);
+      })($nesting[0], $$$($$$($$$('Parser'), 'Builders'), 'Default'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/rewriters/base"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $hash2 = Opal.hash2, $alias = Opal.alias, $send = Opal.send, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["opal/rewriters/base"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $def = Opal.def, $const_set = Opal.const_set, $truthy = Opal.truthy, $Opal = Opal.Opal, $hash2 = Opal.hash2, $defs = Opal.defs, $alias = Opal.alias, $rb_plus = Opal.rb_plus, $eqeqeq = Opal.eqeqeq, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $send2 = Opal.send2, $find_super = Opal.find_super;
 
-  Opal.add_stubs(['$require', '$new', '$current_node', '$loc', '$+', '$stmts_of', '$begin_with_stmts', '$nil?', '$include?', '$type', '$children', '$length', '$===', '$[]', '$s', '$attr_accessor', '$current_node=', '$-', '$location=', '$raise']);
+  Opal.add_stubs('require,new,current_node,loc,+,stmts_of,begin_with_stmts,nil?,include?,type,children,===,length,[],s,attr_accessor,current_node=,-,location=,raise,process_regular_node,[]=,meta');
   
   self.$require("parser");
   self.$require("opal/ast/node");
@@ -28031,121 +25172,111 @@ Opal.modules["opal/rewriters/base"] = function(Opal) {
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'Base');
 
-        var $nesting = [self].concat($parent_nesting), $Base_s$9, $Base_s$10, $Base_prepend_to_body$11, $Base_append_to_body$12, $Base_stmts_of$13, $Base_begin_with_stmts$14, $Base_process$15, $Base_error$16;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
+        $proto.dynamic_cache_result = nil;
         
         (function($base, $super, $parent_nesting) {
           var self = $klass($base, $super, 'DummyLocation');
 
-          var $nesting = [self].concat($parent_nesting), $DummyLocation_node$eq$1, $DummyLocation_expression$2, $DummyLocation_begin_pos$3, $DummyLocation_end_pos$4, $DummyLocation_source$5, $DummyLocation_line$6, $DummyLocation_column$7, $DummyLocation_last_line$8;
+          var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
           
           
-          Opal.def(self, '$node=', $DummyLocation_node$eq$1 = function($a) {
-            var $post_args, self = this;
+          $def(self, '$node=', function $DummyLocation_node$eq$1($a) {
+            var $post_args, $rest_arg;
 
             
             
-            $post_args = Opal.slice.call(arguments, 0, arguments.length);
-            ;
+            $post_args = Opal.slice.call(arguments);
+            
+            $rest_arg = $post_args;;
             return nil;
-          }, $DummyLocation_node$eq$1.$$arity = -1);
+          }, -1);
           
-          Opal.def(self, '$expression', $DummyLocation_expression$2 = function $$expression() {
+          $def(self, '$expression', function $$expression() {
             var self = this;
 
             return self
-          }, $DummyLocation_expression$2.$$arity = 0);
-          
-          Opal.def(self, '$begin_pos', $DummyLocation_begin_pos$3 = function $$begin_pos() {
-            var self = this;
-
+          }, 0);
+          
+          $def(self, '$begin_pos', function $$begin_pos() {
+            
             return 0
-          }, $DummyLocation_begin_pos$3.$$arity = 0);
+          }, 0);
           
-          Opal.def(self, '$end_pos', $DummyLocation_end_pos$4 = function $$end_pos() {
-            var self = this;
-
+          $def(self, '$end_pos', function $$end_pos() {
+            
             return 0
-          }, $DummyLocation_end_pos$4.$$arity = 0);
+          }, 0);
           
-          Opal.def(self, '$source', $DummyLocation_source$5 = function $$source() {
-            var self = this;
-
+          $def(self, '$source', function $$source() {
+            
             return ""
-          }, $DummyLocation_source$5.$$arity = 0);
+          }, 0);
           
-          Opal.def(self, '$line', $DummyLocation_line$6 = function $$line() {
-            var self = this;
-
+          $def(self, '$line', function $$line() {
+            
             return 0
-          }, $DummyLocation_line$6.$$arity = 0);
+          }, 0);
           
-          Opal.def(self, '$column', $DummyLocation_column$7 = function $$column() {
-            var self = this;
-
+          $def(self, '$column', function $$column() {
+            
             return 0
-          }, $DummyLocation_column$7.$$arity = 0);
-          return (Opal.def(self, '$last_line', $DummyLocation_last_line$8 = function $$last_line() {
-            var self = this;
-
-            return $$$($$($nesting, 'Float'), 'INFINITY')
-          }, $DummyLocation_last_line$8.$$arity = 0), nil) && 'last_line';
+          }, 0);
+          return $def(self, '$last_line', function $$last_line() {
+            
+            return $$$($$('Float'), 'INFINITY')
+          }, 0);
         })($nesting[0], null, $nesting);
-        Opal.const_set($nesting[0], 'DUMMY_LOCATION', $$($nesting, 'DummyLocation').$new());
+        $const_set($nesting[0], 'DUMMY_LOCATION', $$('DummyLocation').$new());
         
-        Opal.def(self, '$s', $Base_s$9 = function $$s(type, $a) {
+        $def(self, '$s', function $$s(type, $a) {
           var $post_args, children, self = this, loc = nil;
 
           
           
-          $post_args = Opal.slice.call(arguments, 1, arguments.length);
+          $post_args = Opal.slice.call(arguments, 1);
           
           children = $post_args;;
-          loc = (function() {if ($truthy(self.$current_node())) {
-            return self.$current_node().$loc()
-          } else {
-            return $$($nesting, 'DUMMY_LOCATION')
-          }; return nil; })();
-          return $$$($$$($$$('::', 'Opal'), 'AST'), 'Node').$new(type, children, $hash2(["location"], {"location": loc}));
-        }, $Base_s$9.$$arity = -2);
-        Opal.defs(self, '$s', $Base_s$10 = function $$s(type, $a) {
-          var $post_args, children, self = this;
+          loc = ($truthy(self.$current_node()) ? (self.$current_node().$loc()) : ($$('DUMMY_LOCATION')));
+          return $$$($$$($Opal, 'AST'), 'Node').$new(type, children, $hash2(["location"], {"location": loc}));
+        }, -2);
+        $defs(self, '$s', function $$s(type, $a) {
+          var $post_args, children;
 
           
           
-          $post_args = Opal.slice.call(arguments, 1, arguments.length);
+          $post_args = Opal.slice.call(arguments, 1);
           
           children = $post_args;;
-          return $$$($$$($$$('::', 'Opal'), 'AST'), 'Node').$new(type, children, $hash2(["location"], {"location": $$($nesting, 'DUMMY_LOCATION')}));
-        }, $Base_s$10.$$arity = -2);
+          return $$$($$$($Opal, 'AST'), 'Node').$new(type, children, $hash2(["location"], {"location": $$('DUMMY_LOCATION')}));
+        }, -2);
         $alias(self, "on_iter", "process_regular_node");
-        $alias(self, "on_top", "process_regular_node");
         $alias(self, "on_zsuper", "process_regular_node");
         $alias(self, "on_jscall", "on_send");
         $alias(self, "on_jsattr", "process_regular_node");
         $alias(self, "on_jsattrasgn", "process_regular_node");
         $alias(self, "on_kwsplat", "process_regular_node");
         
-        Opal.def(self, '$prepend_to_body', $Base_prepend_to_body$11 = function $$prepend_to_body(body, node) {
+        $def(self, '$prepend_to_body', function $$prepend_to_body(body, node) {
           var self = this, stmts = nil;
 
           
           stmts = $rb_plus(self.$stmts_of(node), self.$stmts_of(body));
           return self.$begin_with_stmts(stmts);
-        }, $Base_prepend_to_body$11.$$arity = 2);
+        }, 2);
         
-        Opal.def(self, '$append_to_body', $Base_append_to_body$12 = function $$append_to_body(body, node) {
+        $def(self, '$append_to_body', function $$append_to_body(body, node) {
           var self = this, stmts = nil;
 
           
           stmts = $rb_plus(self.$stmts_of(body), self.$stmts_of(node));
           return self.$begin_with_stmts(stmts);
-        }, $Base_append_to_body$12.$$arity = 2);
+        }, 2);
         
-        Opal.def(self, '$stmts_of', $Base_stmts_of$13 = function $$stmts_of(node) {
-          var self = this;
-
+        $def(self, '$stmts_of', function $$stmts_of(node) {
+          
           if ($truthy(node['$nil?']())) {
             return []
           } else if ($truthy(["begin", "kwbegin"]['$include?'](node.$type()))) {
@@ -28153,59 +25284,78 @@ Opal.modules["opal/rewriters/base"] = function(Opal) {
           } else {
             return [node]
           }
-        }, $Base_stmts_of$13.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$begin_with_stmts', $Base_begin_with_stmts$14 = function $$begin_with_stmts(stmts) {
-          var self = this, $case = nil;
+        $def(self, '$begin_with_stmts', function $$begin_with_stmts(stmts) {
+          var self = this, $ret_or_1 = nil;
 
-          return (function() {$case = stmts.$length();
-          if ((0)['$===']($case)) {return nil}
-          else if ((1)['$===']($case)) {return stmts['$[]'](0)}
-          else {return $send(self, 's', ["begin"].concat(Opal.to_a(stmts)))}})()
-        }, $Base_begin_with_stmts$14.$$arity = 1);
+          if ($eqeqeq(0, ($ret_or_1 = stmts.$length()))) {
+            return nil
+          } else if ($eqeqeq(1, $ret_or_1)) {
+            return stmts['$[]'](0)
+          } else {
+            return $send(self, 's', ["begin"].concat($to_a(stmts)))
+          }
+        }, 1);
         self.$attr_accessor("current_node");
         
-        Opal.def(self, '$process', $Base_process$15 = function $$process(node) {
-          var $iter = $Base_process$15.$$p, $yield = $iter || nil, self = this, $writer = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        $def(self, '$process', function $$process(node) {
+          var $yield = $$process.$$p || nil, self = this, $writer = nil;
 
-          if ($iter) $Base_process$15.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$process.$$p;
           return (function() { try {
           
           
           $writer = [node];
-          $send(self, 'current_node=', Opal.to_a($writer));
+          $send(self, 'current_node=', $to_a($writer));
           $writer[$rb_minus($writer["length"], 1)];;
-          return $send2(self, $find_super(self, 'process', $Base_process$15, false, true), 'process', $zuper, $iter);
+          return $send2(self, $find_super(self, 'process', $$process, false, true), 'process', [node], $yield);
           } finally {
-            (($writer = [nil]), $send(self, 'current_node=', Opal.to_a($writer)), $writer[$rb_minus($writer["length"], 1)])
+            (($writer = [nil]), $send(self, 'current_node=', $to_a($writer)), $writer[$rb_minus($writer["length"], 1)])
           }; })()
-        }, $Base_process$15.$$arity = 1);
-        return (Opal.def(self, '$error', $Base_error$16 = function $$error(msg) {
+        }, 1);
+        
+        $def(self, '$error', function $$error(msg) {
           var self = this, error = nil, $writer = nil;
 
           
-          error = $$$($$$('::', 'Opal'), 'RewritingError').$new(msg);
+          error = $$$($Opal, 'RewritingError').$new(msg);
           if ($truthy(self.$current_node())) {
             
             $writer = [self.$current_node().$loc()];
-            $send(error, 'location=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];};
+            $send(error, 'location=', $to_a($writer));
+            $writer[$rb_minus($writer["length"], 1)];
+          };
           return self.$raise(error);
-        }, $Base_error$16.$$arity = 1), nil) && 'error';
-      })($nesting[0], $$$($$$($$$('::', 'Parser'), 'AST'), 'Processor'), $nesting)
+        }, 1);
+        
+        $def(self, '$on_top', function $$on_top(node) {
+          var self = this, $writer = nil;
+
+          
+          node = self.$process_regular_node(node);
+          if ($truthy(self.dynamic_cache_result)) {
+            
+            $writer = ["dynamic_cache_result", true];
+            $send(node.$meta(), '[]=', $to_a($writer));
+            $writer[$rb_minus($writer["length"], 1)];
+          };
+          return node;
+        }, 1);
+        return $def(self, '$dynamic!', function $Base_dynamic$excl$2() {
+          var self = this;
+
+          return (self.dynamic_cache_result = true)
+        }, 0);
+      })($nesting[0], $$$($$$($$$('Parser'), 'AST'), 'Processor'), $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/rewriters/opal_engine_check"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["opal/rewriters/opal_engine_check"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $to_a = Opal.to_a, $truthy = Opal.truthy, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def, $const_set = Opal.const_set;
 
-  Opal.add_stubs(['$require', '$children', '$skip_check_present?', '$process', '$s', '$skip_check_present_not?', '$==']);
+  Opal.add_stubs('require,children,skip_check_present?,process,s,skip_check_present_not?,==');
   
   self.$require("opal/rewriters/base");
   return (function($base, $parent_nesting) {
@@ -28216,78 +25366,62 @@ Opal.modules["opal/rewriters/opal_engine_check"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Rewriters');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'OpalEngineCheck');
 
-        var $nesting = [self].concat($parent_nesting), $OpalEngineCheck_on_if$1, $OpalEngineCheck_skip_check_present$ques$2, $OpalEngineCheck_skip_check_present_not$ques$3;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
         
         
-        Opal.def(self, '$on_if', $OpalEngineCheck_on_if$1 = function $$on_if(node) {
-          var $a, $iter = $OpalEngineCheck_on_if$1.$$p, $yield = $iter || nil, self = this, test = nil, true_body = nil, false_body = nil, $ret_or_1 = nil, $ret_or_2 = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        $def(self, '$on_if', function $$on_if(node) {
+          var $a, $yield = $$on_if.$$p || nil, self = this, test = nil, true_body = nil, false_body = nil, $ret_or_1 = nil;
 
-          if ($iter) $OpalEngineCheck_on_if$1.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$on_if.$$p;
           
-          $a = [].concat(Opal.to_a(node.$children())), (test = ($a[0] == null ? nil : $a[0])), (true_body = ($a[1] == null ? nil : $a[1])), (false_body = ($a[2] == null ? nil : $a[2])), $a;
+          $a = [].concat($to_a(node.$children())), (test = ($a[0] == null ? nil : $a[0])), (true_body = ($a[1] == null ? nil : $a[1])), (false_body = ($a[2] == null ? nil : $a[2])), $a;
           if ($truthy(self['$skip_check_present?'](test))) {
-            return self.$process((function() {if ($truthy(($ret_or_1 = true_body))) {
-              return $ret_or_1
-            } else {
-              return self.$s("nil")
-            }; return nil; })())
+            return self.$process(($truthy(($ret_or_1 = true_body)) ? ($ret_or_1) : (self.$s("nil"))))
           } else if ($truthy(self['$skip_check_present_not?'](test))) {
-            return self.$process((function() {if ($truthy(($ret_or_2 = false_body))) {
-              return $ret_or_2
-            } else {
-              return self.$s("nil")
-            }; return nil; })())
+            return self.$process(($truthy(($ret_or_1 = false_body)) ? ($ret_or_1) : (self.$s("nil"))))
           } else {
-            return $send2(self, $find_super(self, 'on_if', $OpalEngineCheck_on_if$1, false, true), 'on_if', $zuper, $iter)
+            return $send2(self, $find_super(self, 'on_if', $$on_if, false, true), 'on_if', [node], $yield)
           };
-        }, $OpalEngineCheck_on_if$1.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$skip_check_present?', $OpalEngineCheck_skip_check_present$ques$2 = function(test) {
-          var self = this, $ret_or_3 = nil;
+        $def(self, '$skip_check_present?', function $OpalEngineCheck_skip_check_present$ques$1(test) {
+          var $ret_or_1 = nil;
 
-          if ($truthy(($ret_or_3 = test['$==']($$($nesting, 'RUBY_ENGINE_CHECK'))))) {
-            return $ret_or_3
+          if ($truthy(($ret_or_1 = test['$==']($$('RUBY_ENGINE_CHECK'))))) {
+            return $ret_or_1
           } else {
-            return test['$==']($$($nesting, 'RUBY_PLATFORM_CHECK'))
+            return test['$==']($$('RUBY_PLATFORM_CHECK'))
           }
-        }, $OpalEngineCheck_skip_check_present$ques$2.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$skip_check_present_not?', $OpalEngineCheck_skip_check_present_not$ques$3 = function(test) {
-          var self = this, $ret_or_4 = nil;
+        $def(self, '$skip_check_present_not?', function $OpalEngineCheck_skip_check_present_not$ques$2(test) {
+          var $ret_or_1 = nil;
 
-          if ($truthy(($ret_or_4 = test['$==']($$($nesting, 'RUBY_ENGINE_CHECK_NOT'))))) {
-            return $ret_or_4
+          if ($truthy(($ret_or_1 = test['$==']($$('RUBY_ENGINE_CHECK_NOT'))))) {
+            return $ret_or_1
           } else {
-            return test['$==']($$($nesting, 'RUBY_PLATFORM_CHECK_NOT'))
+            return test['$==']($$('RUBY_PLATFORM_CHECK_NOT'))
           }
-        }, $OpalEngineCheck_skip_check_present_not$ques$3.$$arity = 1);
-        Opal.const_set($nesting[0], 'RUBY_ENGINE_CHECK', self.$s("send", self.$s("const", nil, "RUBY_ENGINE"), "==", self.$s("str", "opal")));
-        Opal.const_set($nesting[0], 'RUBY_ENGINE_CHECK_NOT', self.$s("send", self.$s("const", nil, "RUBY_ENGINE"), "!=", self.$s("str", "opal")));
-        Opal.const_set($nesting[0], 'RUBY_PLATFORM_CHECK', self.$s("send", self.$s("const", nil, "RUBY_PLATFORM"), "==", self.$s("str", "opal")));
-        return Opal.const_set($nesting[0], 'RUBY_PLATFORM_CHECK_NOT', self.$s("send", self.$s("const", nil, "RUBY_PLATFORM"), "!=", self.$s("str", "opal")));
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+        }, 1);
+        $const_set($nesting[0], 'RUBY_ENGINE_CHECK', self.$s("send", self.$s("const", nil, "RUBY_ENGINE"), "==", self.$s("str", "opal")));
+        $const_set($nesting[0], 'RUBY_ENGINE_CHECK_NOT', self.$s("send", self.$s("const", nil, "RUBY_ENGINE"), "!=", self.$s("str", "opal")));
+        $const_set($nesting[0], 'RUBY_PLATFORM_CHECK', self.$s("send", self.$s("const", nil, "RUBY_PLATFORM"), "==", self.$s("str", "opal")));
+        return $const_set($nesting[0], 'RUBY_PLATFORM_CHECK_NOT', self.$s("send", self.$s("const", nil, "RUBY_PLATFORM"), "!=", self.$s("str", "opal")));
+      })($nesting[0], $$('Base'), $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/rewriters/for_rewriter"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["opal/rewriters/for_rewriter"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $defs = Opal.defs, $truthy = Opal.truthy, $rb_plus = Opal.rb_plus, $to_a = Opal.to_a, $send = Opal.send, $eqeqeq = Opal.eqeqeq, $def = Opal.def, $send2 = Opal.send2, $find_super = Opal.find_super;
 
-  Opal.add_stubs(['$require', '$+', '$find', '$map', '$s', '$next_tmp', '$class', '$type', '$===', '$<<', '$prepend_to_body', '$process', '$attr_reader', '$new', '$to_a', '$result']);
+  Opal.add_stubs('require,+,find,map,s,next_tmp,class,===,type,updated,<<,prepend_to_body,process,attr_reader,new,to_a,result');
   
   self.$require("opal/rewriters/base");
   return (function($base, $parent_nesting) {
@@ -28298,102 +25432,89 @@ Opal.modules["opal/rewriters/for_rewriter"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Rewriters');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'ForRewriter');
 
-        var $nesting = [self].concat($parent_nesting), $ForRewriter_reset_tmp_counter$excl$1, $ForRewriter_next_tmp$2, $ForRewriter_on_for$3;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
         
-        Opal.defs(self, '$reset_tmp_counter!', $ForRewriter_reset_tmp_counter$excl$1 = function() {
+        $defs(self, '$reset_tmp_counter!', function $ForRewriter_reset_tmp_counter$excl$1() {
           var self = this;
 
           return (self.counter = 0)
-        }, $ForRewriter_reset_tmp_counter$excl$1.$$arity = 0);
-        Opal.defs(self, '$next_tmp', $ForRewriter_next_tmp$2 = function $$next_tmp() {
+        }, 0);
+        $defs(self, '$next_tmp', function $$next_tmp() {
           var self = this, $ret_or_1 = nil;
           if (self.counter == null) self.counter = nil;
 
           
-          self.counter = (function() {if ($truthy(($ret_or_1 = self.counter))) {
-            return $ret_or_1
-          } else {
-            return 0
-          }; return nil; })();
+          self.counter = ($truthy(($ret_or_1 = self.counter)) ? ($ret_or_1) : (0));
           self.counter = $rb_plus(self.counter, 1);
-          return "" + "$for_tmp" + (self.counter);
-        }, $ForRewriter_next_tmp$2.$$arity = 0);
+          return "$for_tmp" + (self.counter);
+        }, 0);
         
-        Opal.def(self, '$on_for', $ForRewriter_on_for$3 = function $$on_for(node) {
-          var $a, $$4, self = this, loop_variable = nil, iterating_value = nil, loop_body = nil, iterating_lvars = nil, lvars_declared_in_body = nil, outer_assigns = nil, tmp_loop_variable = nil, get_tmp_loop_variable = nil, loop_variable_assignment = nil, $case = nil;
+        $def(self, '$on_for', function $$on_for(node) {
+          var $a, self = this, loop_variable = nil, iterating_value = nil, loop_body = nil, iterating_lvars = nil, lvars_declared_in_body = nil, outer_assigns = nil, tmp_loop_variable = nil, get_tmp_loop_variable = nil, loop_variable_assignment = nil, $ret_or_1 = nil;
 
           
-          $a = [].concat(Opal.to_a(node)), (loop_variable = ($a[0] == null ? nil : $a[0])), (iterating_value = ($a[1] == null ? nil : $a[1])), (loop_body = ($a[2] == null ? nil : $a[2])), $a;
-          iterating_lvars = $$($nesting, 'LocalVariableAssigns').$find(loop_variable);
-          lvars_declared_in_body = $$($nesting, 'LocalVariableAssigns').$find(loop_body);
-          outer_assigns = $send($rb_plus(iterating_lvars, lvars_declared_in_body), 'map', [], ($$4 = function(lvar_name){var self = $$4.$$s == null ? this : $$4.$$s;
+          $a = [].concat($to_a(node)), (loop_variable = ($a[0] == null ? nil : $a[0])), (iterating_value = ($a[1] == null ? nil : $a[1])), (loop_body = ($a[2] == null ? nil : $a[2])), $a;
+          iterating_lvars = $$('LocalVariableAssigns').$find(loop_variable);
+          lvars_declared_in_body = $$('LocalVariableAssigns').$find(loop_body);
+          outer_assigns = $send($rb_plus(iterating_lvars, lvars_declared_in_body), 'map', [], function $$2(lvar_name){var self = $$2.$$s == null ? this : $$2.$$s;
 
             
             
-            if (lvar_name == null) {
-              lvar_name = nil;
-            };
-            return self.$s("lvdeclare", lvar_name);}, $$4.$$s = self, $$4.$$arity = 1, $$4));
+            if (lvar_name == null) lvar_name = nil;;
+            return self.$s("lvdeclare", lvar_name);}, {$$arity: 1, $$s: self});
           tmp_loop_variable = self.$class().$next_tmp();
           get_tmp_loop_variable = self.$s("js_tmp", tmp_loop_variable);
-          loop_variable_assignment = (function() {$case = loop_variable.$type();
-          if ("mlhs"['$===']($case)) {return self.$s("masgn", loop_variable, get_tmp_loop_variable)}
-          else {return loop_variable['$<<'](get_tmp_loop_variable)}})();
+          loop_variable_assignment = ($eqeqeq("mlhs", ($ret_or_1 = loop_variable.$type())) ? (loop_variable.$updated("masgn", [loop_variable, get_tmp_loop_variable])) : (loop_variable['$<<'](get_tmp_loop_variable)));
           loop_body = self.$prepend_to_body(loop_body, loop_variable_assignment);
-          node = self.$s("send", iterating_value, "each", self.$s("iter", self.$s("args", self.$s("arg", tmp_loop_variable)), self.$process(loop_body)));
-          return $send(self, 's', ["begin"].concat(Opal.to_a(outer_assigns)).concat([node]));
-        }, $ForRewriter_on_for$3.$$arity = 1);
+          node = node.$updated("send", [iterating_value, "each", node.$updated("iter", [self.$s("args", self.$s("arg", tmp_loop_variable)), self.$process(loop_body)])]);
+          return node.$updated("begin", [].concat($to_a(outer_assigns)).concat([node]));
+        }, 1);
         return (function($base, $super, $parent_nesting) {
           var self = $klass($base, $super, 'LocalVariableAssigns');
 
-          var $nesting = [self].concat($parent_nesting), $LocalVariableAssigns_find$5, $LocalVariableAssigns_initialize$6, $LocalVariableAssigns_on_lvasgn$7;
+          var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
           
           self.$attr_reader("result");
-          Opal.defs(self, '$find', $LocalVariableAssigns_find$5 = function $$find(node) {
+          $defs(self, '$find', function $$find(node) {
             var self = this, processor = nil;
 
             
             processor = self.$new();
             processor.$process(node);
             return processor.$result().$to_a();
-          }, $LocalVariableAssigns_find$5.$$arity = 1);
+          }, 1);
           
-          Opal.def(self, '$initialize', $LocalVariableAssigns_initialize$6 = function $$initialize() {
+          $def(self, '$initialize', function $$initialize() {
             var self = this;
 
-            return (self.result = $$($nesting, 'Set').$new())
-          }, $LocalVariableAssigns_initialize$6.$$arity = 0);
-          return (Opal.def(self, '$on_lvasgn', $LocalVariableAssigns_on_lvasgn$7 = function $$on_lvasgn(node) {
-            var $a, $iter = $LocalVariableAssigns_on_lvasgn$7.$$p, $yield = $iter || nil, self = this, name = nil, _ = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+            return (self.result = $$('Set').$new())
+          }, 0);
+          return $def(self, '$on_lvasgn', function $$on_lvasgn(node) {
+            var $a, $yield = $$on_lvasgn.$$p || nil, self = this, name = nil, _ = nil;
 
-            if ($iter) $LocalVariableAssigns_on_lvasgn$7.$$p = null;
-            // Prepare super implicit arguments
-            for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-              $zuper[$zuper_i] = arguments[$zuper_i];
-            }
+            delete $$on_lvasgn.$$p;
             
-            $a = [].concat(Opal.to_a(node)), (name = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $a;
+            $a = [].concat($to_a(node)), (name = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $a;
             self.$result()['$<<'](name);
-            return $send2(self, $find_super(self, 'on_lvasgn', $LocalVariableAssigns_on_lvasgn$7, false, true), 'on_lvasgn', $zuper, $iter);
-          }, $LocalVariableAssigns_on_lvasgn$7.$$arity = 1), nil) && 'on_lvasgn';
-        })($nesting[0], $$($nesting, 'Base'), $nesting);
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+            return $send2(self, $find_super(self, 'on_lvasgn', $$on_lvasgn, false, true), 'on_lvasgn', [node], $yield);
+          }, 1);
+        })($nesting[0], $$('Base'), $nesting);
+      })($nesting[0], $$('Base'), $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/rewriters/explicit_writer_return"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send2 = Opal.send2, $find_super = Opal.find_super, $slice = Opal.slice, $send = Opal.send;
+Opal.modules["opal/rewriters/explicit_writer_return"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $def = Opal.def, $const_set = Opal.const_set, $truthy = Opal.truthy, $send2 = Opal.send2, $find_super = Opal.find_super, $to_a = Opal.to_a, $slice = Opal.slice, $eqeq = Opal.eqeq, $regexp = Opal.regexp, $send = Opal.send;
 
-  Opal.add_stubs(['$require', '$s', '$=~', '$to_s', '$==', '$process_all', '$updated']);
+  Opal.add_stubs('require,s,==,to_s,=~,process_all,updated');
   
   self.$require("opal/rewriters/base");
   return (function($base, $parent_nesting) {
@@ -28404,94 +25525,81 @@ Opal.modules["opal/rewriters/explicit_writer_return"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Rewriters');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'ExplicitWriterReturn');
 
-        var $nesting = [self].concat($parent_nesting), $ExplicitWriterReturn_initialize$1, $ExplicitWriterReturn_on_send$2, $ExplicitWriterReturn_on_masgn$3;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.in_masgn = nil;
+        $proto.in_masgn = nil;
         
         
-        Opal.def(self, '$initialize', $ExplicitWriterReturn_initialize$1 = function $$initialize() {
+        $def(self, '$initialize', function $$initialize() {
           var self = this;
 
           return (self.in_masgn = false)
-        }, $ExplicitWriterReturn_initialize$1.$$arity = 0);
-        Opal.const_set($nesting[0], 'TMP_NAME', "$writer");
-        Opal.const_set($nesting[0], 'GET_ARGS_NODE', self.$s("lvar", $$($nesting, 'TMP_NAME')));
-        Opal.const_set($nesting[0], 'RETURN_ARGS_NODE', self.$s("jsattr", $$($nesting, 'GET_ARGS_NODE'), self.$s("send", self.$s("jsattr", $$($nesting, 'GET_ARGS_NODE'), self.$s("str", "length")), "-", self.$s("int", 1))));
-        
-        Opal.def(self, '$on_send', $ExplicitWriterReturn_on_send$2 = function $$on_send(node) {
-          var $a, $iter = $ExplicitWriterReturn_on_send$2.$$p, $yield = $iter || nil, self = this, recv = nil, method_name = nil, args = nil, $ret_or_1 = nil, set_args_node = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
-
-          if ($iter) $ExplicitWriterReturn_on_send$2.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+        }, 0);
+        $const_set($nesting[0], 'TMP_NAME', "$writer");
+        $const_set($nesting[0], 'GET_ARGS_NODE', self.$s("lvar", $$('TMP_NAME')));
+        $const_set($nesting[0], 'RETURN_ARGS_NODE', self.$s("jsattr", $$('GET_ARGS_NODE'), self.$s("send", self.$s("jsattr", $$('GET_ARGS_NODE'), self.$s("str", "length")), "-", self.$s("int", 1))));
+        
+        $def(self, '$on_send', function $$on_send(node) {
+          var $a, $yield = $$on_send.$$p || nil, self = this, recv = nil, method_name = nil, args = nil, set_args_node = nil;
+
+          delete $$on_send.$$p;
           
           if ($truthy(self.in_masgn)) {
-            return $send2(self, $find_super(self, 'on_send', $ExplicitWriterReturn_on_send$2, false, true), 'on_send', $zuper, $iter)};
-          $a = [].concat(Opal.to_a(node)), (recv = ($a[0] == null ? nil : $a[0])), (method_name = ($a[1] == null ? nil : $a[1])), (args = $slice.call($a, 2)), $a;
-          if ($truthy((function() {if ($truthy(($ret_or_1 = method_name.$to_s()['$=~'](Opal.regexp([$$($nesting, 'REGEXP_START'), "\\w+=", $$($nesting, 'REGEXP_END')]))))) {
-            return $ret_or_1
-          } else {
-            return method_name.$to_s()['$==']("[]=")
-          }; return nil; })())) {
+            return $send2(self, $find_super(self, 'on_send', $$on_send, false, true), 'on_send', [node], $yield)
+          };
+          $a = [].concat($to_a(node)), (recv = ($a[0] == null ? nil : $a[0])), (method_name = ($a[1] == null ? nil : $a[1])), (args = $slice.call($a, 2)), $a;
+          if (($truthy(method_name.$to_s()['$=~']($regexp([$$('REGEXP_START'), "\\w+=", $$('REGEXP_END')]))) || ($eqeq(method_name.$to_s(), "[]=")))) {
             
-            set_args_node = self.$s("lvasgn", $$($nesting, 'TMP_NAME'), $send(self, 's', ["array"].concat(Opal.to_a(self.$process_all(args)))));
-            return self.$s("begin", set_args_node, node.$updated(nil, [recv, method_name, self.$s("splat", $$($nesting, 'GET_ARGS_NODE'))]), $$($nesting, 'RETURN_ARGS_NODE'));
+            set_args_node = self.$s("lvasgn", $$('TMP_NAME'), $send(self, 's', ["array"].concat($to_a(self.$process_all(args)))));
+            return self.$s("begin", set_args_node, node.$updated(nil, [recv, method_name, self.$s("splat", $$('GET_ARGS_NODE'))]), $$('RETURN_ARGS_NODE'));
           } else {
-            return $send2(self, $find_super(self, 'on_send', $ExplicitWriterReturn_on_send$2, false, true), 'on_send', $zuper, $iter)
+            return $send2(self, $find_super(self, 'on_send', $$on_send, false, true), 'on_send', [node], $yield)
           };
-        }, $ExplicitWriterReturn_on_send$2.$$arity = 1);
-        return (Opal.def(self, '$on_masgn', $ExplicitWriterReturn_on_masgn$3 = function $$on_masgn(node) {
-          var $iter = $ExplicitWriterReturn_on_masgn$3.$$p, $yield = $iter || nil, self = this, result = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        }, 1);
+        return $def(self, '$on_masgn', function $$on_masgn(node) {
+          var $yield = $$on_masgn.$$p || nil, self = this, result = nil;
 
-          if ($iter) $ExplicitWriterReturn_on_masgn$3.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$on_masgn.$$p;
           
           self.in_masgn = true;
-          result = $send2(self, $find_super(self, 'on_masgn', $ExplicitWriterReturn_on_masgn$3, false, true), 'on_masgn', $zuper, $iter);
+          result = $send2(self, $find_super(self, 'on_masgn', $$on_masgn, false, true), 'on_masgn', [node], $yield);
           self.in_masgn = false;
           return result;
-        }, $ExplicitWriterReturn_on_masgn$3.$$arity = 1), nil) && 'on_masgn';
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+        }, 1);
+      })($nesting[0], $$('Base'), $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/regexp_anchors"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module;
+Opal.modules["opal/regexp_anchors"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $const_set = Opal.const_set;
 
-  Opal.add_stubs(['$new']);
+  Opal.add_stubs('new');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Opal');
 
-    var $nesting = [self].concat($parent_nesting);
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
-    Opal.const_set($nesting[0], 'REGEXP_START', "^");
-    Opal.const_set($nesting[0], 'REGEXP_END', "$");
-    Opal.const_set($nesting[0], 'FORBIDDEN_STARTING_IDENTIFIER_CHARS', "\\u0001-\\u002F\\u003A-\\u0040\\u005B-\\u005E\\u0060\\u007B-\\u007F");
-    Opal.const_set($nesting[0], 'FORBIDDEN_ENDING_IDENTIFIER_CHARS', "\\u0001-\\u0020\\u0022-\\u002F\\u003A-\\u003E\\u0040\\u005B-\\u005E\\u0060\\u007B-\\u007F");
-    Opal.const_set($nesting[0], 'INLINE_IDENTIFIER_REGEXP', $$($nesting, 'Regexp').$new("" + "[^" + ($$($nesting, 'FORBIDDEN_STARTING_IDENTIFIER_CHARS')) + "]*[^" + ($$($nesting, 'FORBIDDEN_ENDING_IDENTIFIER_CHARS')) + "]"));
-    Opal.const_set($nesting[0], 'FORBIDDEN_CONST_NAME_CHARS', "\\u0001-\\u0020\\u0021-\\u002F\\u003B-\\u003F\\u0040\\u005B-\\u005E\\u0060\\u007B-\\u007F");
-    return Opal.const_set($nesting[0], 'CONST_NAME_REGEXP', $$($nesting, 'Regexp').$new("" + ($$($nesting, 'REGEXP_START')) + "(::)?[A-Z][^" + ($$($nesting, 'FORBIDDEN_CONST_NAME_CHARS')) + "]*" + ($$($nesting, 'REGEXP_END'))));
+    $const_set(self, 'REGEXP_START', "^");
+    $const_set(self, 'REGEXP_END', "$");
+    $const_set(self, 'FORBIDDEN_STARTING_IDENTIFIER_CHARS', "\\u0001-\\u002F\\u003A-\\u0040\\u005B-\\u005E\\u0060\\u007B-\\u007F");
+    $const_set(self, 'FORBIDDEN_ENDING_IDENTIFIER_CHARS', "\\u0001-\\u0020\\u0022-\\u002F\\u003A-\\u003E\\u0040\\u005B-\\u005E\\u0060\\u007B-\\u007F");
+    $const_set(self, 'INLINE_IDENTIFIER_REGEXP', $$('Regexp').$new("[^" + ($$$(self, 'FORBIDDEN_STARTING_IDENTIFIER_CHARS')) + "]*[^" + ($$$(self, 'FORBIDDEN_ENDING_IDENTIFIER_CHARS')) + "]"));
+    $const_set(self, 'FORBIDDEN_CONST_NAME_CHARS', "\\u0001-\\u0020\\u0021-\\u002F\\u003B-\\u003F\\u0040\\u005B-\\u005E\\u0060\\u007B-\\u007F");
+    return $const_set(self, 'CONST_NAME_REGEXP', $$('Regexp').$new("" + ($$$(self, 'REGEXP_START')) + "(::)?[A-Z][^" + ($$$(self, 'FORBIDDEN_CONST_NAME_CHARS')) + "]*" + ($$$(self, 'REGEXP_END'))));
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/rewriters/js_reserved_words"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $range = Opal.range, $send2 = Opal.send2, $find_super = Opal.find_super, $hash2 = Opal.hash2;
+Opal.modules["opal/rewriters/js_reserved_words"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $const_set = Opal.const_set, $regexp = Opal.regexp, $truthy = Opal.truthy, $defs = Opal.defs, $def = Opal.def, $range = Opal.range, $to_a = Opal.to_a, $send2 = Opal.send2, $find_super = Opal.find_super, $hash2 = Opal.hash2, $alias = Opal.alias;
 
-  Opal.add_stubs(['$require', '$freeze', '$=~', '$!', '$valid_name?', '$class', '$to_sym', '$valid_ivar_name?', '$[]', '$to_s', '$updated', '$fix_var_name', '$fix_ivar_name']);
+  Opal.add_stubs('require,freeze,=~,!,valid_name?,class,to_sym,valid_ivar_name?,[],to_s,updated,fix_var_name,fix_ivar_name');
   
   self.$require("opal/rewriters/base");
   self.$require("opal/regexp_anchors");
@@ -28503,49 +25611,37 @@ Opal.modules["opal/rewriters/js_reserved_words"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Rewriters');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'JsReservedWords');
 
-        var $nesting = [self].concat($parent_nesting), $JsReservedWords_valid_name$ques$1, $JsReservedWords_valid_ivar_name$ques$2, $JsReservedWords_fix_var_name$3, $JsReservedWords_fix_ivar_name$4, $JsReservedWords_on_lvar$5, $JsReservedWords_on_lvasgn$6, $JsReservedWords_on_ivar$7, $JsReservedWords_on_ivasgn$8, $JsReservedWords_on_restarg$9, $JsReservedWords_on_argument$10;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
         
-        Opal.const_set($nesting[0], 'ES51_RESERVED_WORD', Opal.regexp([$$($nesting, 'REGEXP_START'), "(?:do|if|in|for|let|new|try|var|case|else|enum|eval|false|null|this|true|void|with|break|catch|class|const|super|throw|while|yield|delete|export|import|public|return|static|switch|typeof|default|extends|finally|package|private|continue|debugger|function|arguments|interface|protected|implements|instanceof)", $$($nesting, 'REGEXP_END')]).$freeze());
-        Opal.const_set($nesting[0], 'ES3_RESERVED_WORD_EXCLUSIVE', Opal.regexp([$$($nesting, 'REGEXP_START'), "(?:int|byte|char|goto|long|final|float|short|double|native|throws|boolean|abstract|volatile|transient|synchronized)", $$($nesting, 'REGEXP_END')]).$freeze());
-        Opal.const_set($nesting[0], 'PROTO_SPECIAL_PROPS', Opal.regexp([$$($nesting, 'REGEXP_START'), "(?:constructor|displayName|__proto__|__parent__|__noSuchMethod__|__count__)", $$($nesting, 'REGEXP_END')]).$freeze());
-        Opal.const_set($nesting[0], 'PROTO_SPECIAL_METHODS', Opal.regexp([$$($nesting, 'REGEXP_START'), "(?:hasOwnProperty|valueOf)", $$($nesting, 'REGEXP_END')]).$freeze());
-        Opal.const_set($nesting[0], 'IMMUTABLE_PROPS', Opal.regexp([$$($nesting, 'REGEXP_START'), "(?:NaN|Infinity|undefined)", $$($nesting, 'REGEXP_END')]).$freeze());
-        Opal.const_set($nesting[0], 'BASIC_IDENTIFIER_RULES', Opal.regexp([$$($nesting, 'REGEXP_START'), "[$_a-z][$_a-z\\d]*", $$($nesting, 'REGEXP_END')], 'i').$freeze());
-        Opal.const_set($nesting[0], 'RESERVED_FUNCTION_NAMES', Opal.regexp([$$($nesting, 'REGEXP_START'), "(?:Array)", $$($nesting, 'REGEXP_END')]).$freeze());
-        Opal.defs(self, '$valid_name?', $JsReservedWords_valid_name$ques$1 = function(name) {
-          var self = this, $ret_or_1 = nil, $ret_or_2 = nil, $ret_or_3 = nil;
+        $const_set($nesting[0], 'ES51_RESERVED_WORD', $regexp([$$('REGEXP_START'), "(?:do|if|in|for|let|new|try|var|case|else|enum|eval|false|null|this|true|void|with|break|catch|class|const|super|throw|while|yield|delete|export|import|public|return|static|switch|typeof|default|extends|finally|package|private|continue|debugger|function|arguments|interface|protected|implements|instanceof)", $$('REGEXP_END')]).$freeze());
+        $const_set($nesting[0], 'ES3_RESERVED_WORD_EXCLUSIVE', $regexp([$$('REGEXP_START'), "(?:int|byte|char|goto|long|final|float|short|double|native|throws|boolean|abstract|volatile|transient|synchronized)", $$('REGEXP_END')]).$freeze());
+        $const_set($nesting[0], 'PROTO_SPECIAL_PROPS', $regexp([$$('REGEXP_START'), "(?:constructor|displayName|__proto__|__parent__|__noSuchMethod__|__count__)", $$('REGEXP_END')]).$freeze());
+        $const_set($nesting[0], 'PROTO_SPECIAL_METHODS', $regexp([$$('REGEXP_START'), "(?:hasOwnProperty|valueOf)", $$('REGEXP_END')]).$freeze());
+        $const_set($nesting[0], 'IMMUTABLE_PROPS', $regexp([$$('REGEXP_START'), "(?:NaN|Infinity|undefined)", $$('REGEXP_END')]).$freeze());
+        $const_set($nesting[0], 'BASIC_IDENTIFIER_RULES', $regexp([$$('REGEXP_START'), "[$_a-z][$_a-z\\d]*", $$('REGEXP_END')], 'i').$freeze());
+        $const_set($nesting[0], 'RESERVED_FUNCTION_NAMES', $regexp([$$('REGEXP_START'), "(?:Array)", $$('REGEXP_END')]).$freeze());
+        $defs(self, '$valid_name?', function $JsReservedWords_valid_name$ques$1(name) {
+          var $ret_or_1 = nil, $ret_or_2 = nil, $ret_or_3 = nil;
 
-          if ($truthy(($ret_or_1 = $$($nesting, 'BASIC_IDENTIFIER_RULES')['$=~'](name)))) {
-            return (function() {if ($truthy(($ret_or_2 = (function() {if ($truthy(($ret_or_3 = $$($nesting, 'ES51_RESERVED_WORD')['$=~'](name)))) {
-              return $ret_or_3
-            } else {
-              return $$($nesting, 'ES3_RESERVED_WORD_EXCLUSIVE')['$=~'](name)
-            }; return nil; })()))) {
-              return $ret_or_2
-            } else {
-              return $$($nesting, 'IMMUTABLE_PROPS')['$=~'](name)
-            }; return nil; })()['$!']()
+          if ($truthy(($ret_or_1 = $$('BASIC_IDENTIFIER_RULES')['$=~'](name)))) {
+            return ($truthy(($ret_or_2 = ($truthy(($ret_or_3 = $$('ES51_RESERVED_WORD')['$=~'](name))) ? ($ret_or_3) : ($$('ES3_RESERVED_WORD_EXCLUSIVE')['$=~'](name))))) ? ($ret_or_2) : ($$('IMMUTABLE_PROPS')['$=~'](name)))['$!']()
           } else {
             return $ret_or_1
           }
-        }, $JsReservedWords_valid_name$ques$1.$$arity = 1);
-        Opal.defs(self, '$valid_ivar_name?', $JsReservedWords_valid_ivar_name$ques$2 = function(name) {
-          var self = this, $ret_or_4 = nil;
+        }, 1);
+        $defs(self, '$valid_ivar_name?', function $JsReservedWords_valid_ivar_name$ques$2(name) {
+          var $ret_or_1 = nil;
 
-          return (function() {if ($truthy(($ret_or_4 = $$($nesting, 'PROTO_SPECIAL_PROPS')['$=~'](name)))) {
-            return $ret_or_4
-          } else {
-            return $$($nesting, 'PROTO_SPECIAL_METHODS')['$=~'](name)
-          }; return nil; })()['$!']()
-        }, $JsReservedWords_valid_ivar_name$ques$2.$$arity = 1);
+          return ($truthy(($ret_or_1 = $$('PROTO_SPECIAL_PROPS')['$=~'](name))) ? ($ret_or_1) : ($$('PROTO_SPECIAL_METHODS')['$=~'](name)))['$!']()
+        }, 1);
         
-        Opal.def(self, '$fix_var_name', $JsReservedWords_fix_var_name$3 = function $$fix_var_name(name) {
+        $def(self, '$fix_var_name', function $$fix_var_name(name) {
           var self = this;
 
           if ($truthy(self.$class()['$valid_name?'](name))) {
@@ -28553,9 +25649,9 @@ Opal.modules["opal/rewriters/js_reserved_words"] = function(Opal) {
           } else {
             return (("" + (name)) + "$").$to_sym()
           }
-        }, $JsReservedWords_fix_var_name$3.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$fix_ivar_name', $JsReservedWords_fix_ivar_name$4 = function $$fix_ivar_name(name) {
+        $def(self, '$fix_ivar_name', function $$fix_ivar_name(name) {
           var self = this;
 
           if ($truthy(self.$class()['$valid_ivar_name?'](name.$to_s()['$[]']($range(1, -1, false))))) {
@@ -28563,93 +25659,79 @@ Opal.modules["opal/rewriters/js_reserved_words"] = function(Opal) {
           } else {
             return (("" + (name)) + "$").$to_sym()
           }
-        }, $JsReservedWords_fix_ivar_name$4.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$on_lvar', $JsReservedWords_on_lvar$5 = function $$on_lvar(node) {
-          var $a, $iter = $JsReservedWords_on_lvar$5.$$p, $yield = $iter || nil, self = this, name = nil, _ = nil;
+        $def(self, '$on_lvar', function $$on_lvar(node) {
+          var $a, $yield = $$on_lvar.$$p || nil, self = this, name = nil, _ = nil;
 
-          if ($iter) $JsReservedWords_on_lvar$5.$$p = null;
+          delete $$on_lvar.$$p;
           
-          $a = [].concat(Opal.to_a(node)), (name = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $a;
+          $a = [].concat($to_a(node)), (name = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $a;
           node = node.$updated(nil, [self.$fix_var_name(name)]);
-          return $send2(self, $find_super(self, 'on_lvar', $JsReservedWords_on_lvar$5, false, true), 'on_lvar', [node], null);
-        }, $JsReservedWords_on_lvar$5.$$arity = 1);
+          return $send2(self, $find_super(self, 'on_lvar', $$on_lvar, false, true), 'on_lvar', [node], null);
+        }, 1);
         
-        Opal.def(self, '$on_lvasgn', $JsReservedWords_on_lvasgn$6 = function $$on_lvasgn(node) {
-          var $a, $iter = $JsReservedWords_on_lvasgn$6.$$p, $yield = $iter || nil, self = this, name = nil, value = nil;
+        $def(self, '$on_lvasgn', function $$on_lvasgn(node) {
+          var $a, $yield = $$on_lvasgn.$$p || nil, self = this, name = nil, value = nil;
 
-          if ($iter) $JsReservedWords_on_lvasgn$6.$$p = null;
+          delete $$on_lvasgn.$$p;
           
-          $a = [].concat(Opal.to_a(node)), (name = ($a[0] == null ? nil : $a[0])), (value = ($a[1] == null ? nil : $a[1])), $a;
-          node = (function() {if ($truthy(value)) {
-            return node.$updated(nil, [self.$fix_var_name(name), value])
-          } else {
-            return node.$updated(nil, [self.$fix_var_name(name)])
-          }; return nil; })();
-          return $send2(self, $find_super(self, 'on_lvasgn', $JsReservedWords_on_lvasgn$6, false, true), 'on_lvasgn', [node], null);
-        }, $JsReservedWords_on_lvasgn$6.$$arity = 1);
+          $a = [].concat($to_a(node)), (name = ($a[0] == null ? nil : $a[0])), (value = ($a[1] == null ? nil : $a[1])), $a;
+          node = ($truthy(value) ? (node.$updated(nil, [self.$fix_var_name(name), value])) : (node.$updated(nil, [self.$fix_var_name(name)])));
+          return $send2(self, $find_super(self, 'on_lvasgn', $$on_lvasgn, false, true), 'on_lvasgn', [node], null);
+        }, 1);
         
-        Opal.def(self, '$on_ivar', $JsReservedWords_on_ivar$7 = function $$on_ivar(node) {
-          var $a, $iter = $JsReservedWords_on_ivar$7.$$p, $yield = $iter || nil, self = this, name = nil, _ = nil;
+        $def(self, '$on_ivar', function $$on_ivar(node) {
+          var $a, $yield = $$on_ivar.$$p || nil, self = this, name = nil, _ = nil;
 
-          if ($iter) $JsReservedWords_on_ivar$7.$$p = null;
+          delete $$on_ivar.$$p;
           
-          $a = [].concat(Opal.to_a(node)), (name = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $a;
+          $a = [].concat($to_a(node)), (name = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $a;
           node = node.$updated(nil, [self.$fix_ivar_name(name)]);
-          return $send2(self, $find_super(self, 'on_ivar', $JsReservedWords_on_ivar$7, false, true), 'on_ivar', [node], null);
-        }, $JsReservedWords_on_ivar$7.$$arity = 1);
+          return $send2(self, $find_super(self, 'on_ivar', $$on_ivar, false, true), 'on_ivar', [node], null);
+        }, 1);
         
-        Opal.def(self, '$on_ivasgn', $JsReservedWords_on_ivasgn$8 = function $$on_ivasgn(node) {
-          var $a, $iter = $JsReservedWords_on_ivasgn$8.$$p, $yield = $iter || nil, self = this, name = nil, value = nil;
+        $def(self, '$on_ivasgn', function $$on_ivasgn(node) {
+          var $a, $yield = $$on_ivasgn.$$p || nil, self = this, name = nil, value = nil;
 
-          if ($iter) $JsReservedWords_on_ivasgn$8.$$p = null;
+          delete $$on_ivasgn.$$p;
           
-          $a = [].concat(Opal.to_a(node)), (name = ($a[0] == null ? nil : $a[0])), (value = ($a[1] == null ? nil : $a[1])), $a;
-          node = (function() {if ($truthy(value)) {
-            return node.$updated(nil, [self.$fix_ivar_name(name), value])
-          } else {
-            return node.$updated(nil, [self.$fix_ivar_name(name)])
-          }; return nil; })();
-          return $send2(self, $find_super(self, 'on_ivasgn', $JsReservedWords_on_ivasgn$8, false, true), 'on_ivasgn', [node], null);
-        }, $JsReservedWords_on_ivasgn$8.$$arity = 1);
+          $a = [].concat($to_a(node)), (name = ($a[0] == null ? nil : $a[0])), (value = ($a[1] == null ? nil : $a[1])), $a;
+          node = ($truthy(value) ? (node.$updated(nil, [self.$fix_ivar_name(name), value])) : (node.$updated(nil, [self.$fix_ivar_name(name)])));
+          return $send2(self, $find_super(self, 'on_ivasgn', $$on_ivasgn, false, true), 'on_ivasgn', [node], null);
+        }, 1);
         
-        Opal.def(self, '$on_restarg', $JsReservedWords_on_restarg$9 = function $$on_restarg(node) {
+        $def(self, '$on_restarg', function $$on_restarg(node) {
           var $a, self = this, name = nil, _ = nil;
 
           
-          $a = [].concat(Opal.to_a(node)), (name = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $a;
+          $a = [].concat($to_a(node)), (name = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $a;
           if ($truthy(name)) {
-            node = node.$updated(nil, [self.$fix_var_name(name)], $hash2(["meta"], {"meta": $hash2(["arg_name"], {"arg_name": name})}))};
+            node = node.$updated(nil, [self.$fix_var_name(name)], $hash2(["meta"], {"meta": $hash2(["arg_name"], {"arg_name": name})}))
+          };
           return node;
-        }, $JsReservedWords_on_restarg$9.$$arity = 1);
-        return (Opal.def(self, '$on_argument', $JsReservedWords_on_argument$10 = function $$on_argument(node) {
-          var $a, $iter = $JsReservedWords_on_argument$10.$$p, $yield = $iter || nil, self = this, name = nil, value = nil, fixed_name = nil, new_children = nil;
+        }, 1);
+        $alias(self, "on_kwrestarg", "on_restarg");
+        return $def(self, '$on_argument', function $$on_argument(node) {
+          var $a, $yield = $$on_argument.$$p || nil, self = this, name = nil, value = nil, fixed_name = nil, new_children = nil;
 
-          if ($iter) $JsReservedWords_on_argument$10.$$p = null;
+          delete $$on_argument.$$p;
           
-          node = $send2(self, $find_super(self, 'on_argument', $JsReservedWords_on_argument$10, false, true), 'on_argument', [node], null);
-          $a = [].concat(Opal.to_a(node)), (name = ($a[0] == null ? nil : $a[0])), (value = ($a[1] == null ? nil : $a[1])), $a;
+          node = $send2(self, $find_super(self, 'on_argument', $$on_argument, false, true), 'on_argument', [node], null);
+          $a = [].concat($to_a(node)), (name = ($a[0] == null ? nil : $a[0])), (value = ($a[1] == null ? nil : $a[1])), $a;
           fixed_name = self.$fix_var_name(name);
-          new_children = (function() {if ($truthy(value)) {
-            return [fixed_name, value]
-          } else {
-            return [fixed_name]
-          }; return nil; })();
+          new_children = ($truthy(value) ? ([fixed_name, value]) : ([fixed_name]));
           return node.$updated(nil, new_children, $hash2(["meta"], {"meta": $hash2(["arg_name"], {"arg_name": name})}));
-        }, $JsReservedWords_on_argument$10.$$arity = 1), nil) && 'on_argument';
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+        }, 1);
+      })($nesting[0], $$('Base'), $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/rewriters/block_to_iter"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["opal/rewriters/block_to_iter"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $to_a = Opal.to_a, $rb_plus = Opal.rb_plus, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$s', '$updated', '$+', '$children']);
+  Opal.add_stubs('require,s,process,updated,+,children');
   
   self.$require("opal/rewriters/base");
   return (function($base, $parent_nesting) {
@@ -28660,36 +25742,29 @@ Opal.modules["opal/rewriters/block_to_iter"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Rewriters');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'BlockToIter');
 
-        var $nesting = [self].concat($parent_nesting), $BlockToIter_on_block$1;
-
-        return (Opal.def(self, '$on_block', $BlockToIter_on_block$1 = function $$on_block(node) {
-          var $a, $iter = $BlockToIter_on_block$1.$$p, $yield = $iter || nil, self = this, recvr = nil, args = nil, body = nil, iter_node = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        
+        return $def(self, '$on_block', function $$on_block(node) {
+          var $a, self = this, recvr = nil, args = nil, body = nil, iter_node = nil;
 
-          if ($iter) $BlockToIter_on_block$1.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
           
-          $a = [].concat(Opal.to_a($send2(self, $find_super(self, 'on_block', $BlockToIter_on_block$1, false, true), 'on_block', $zuper, $iter))), (recvr = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), $a;
+          $a = [].concat($to_a(node)), (recvr = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), $a;
           iter_node = self.$s("iter", args, body);
-          return recvr.$updated(nil, $rb_plus(recvr.$children(), [iter_node]));
-        }, $BlockToIter_on_block$1.$$arity = 1), nil) && 'on_block'
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+          return self.$process(recvr.$updated(nil, $rb_plus(recvr.$children(), [iter_node])));
+        }, 1)
+      })($nesting[0], $$('Base'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/rewriters/dot_js_syntax"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $slice = Opal.slice, $truthy = Opal.truthy, $send2 = Opal.send2, $find_super = Opal.find_super, $send = Opal.send;
+Opal.modules["opal/rewriters/dot_js_syntax"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $to_a = Opal.to_a, $slice = Opal.slice, $eqeq = Opal.eqeq, $truthy = Opal.truthy, $eqeqeq = Opal.eqeqeq, $neqeq = Opal.neqeq, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def, $send = Opal.send;
 
-  Opal.add_stubs(['$require', '$==', '$type', '$===', '$!=', '$size', '$error', '$first', '$to_js_attr_call', '$to_js_attr_assign_call', '$to_native_js_call', '$s']);
+  Opal.add_stubs('require,==,type,===,!=,size,error,first,to_js_attr_call,to_js_attr_assign_call,to_native_js_call,s');
   
   self.$require("opal/rewriters/base");
   return (function($base, $parent_nesting) {
@@ -28700,84 +25775,76 @@ Opal.modules["opal/rewriters/dot_js_syntax"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Rewriters');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'DotJsSyntax');
 
-        var $nesting = [self].concat($parent_nesting), $DotJsSyntax_on_send$1, $DotJsSyntax_to_native_js_call$2, $DotJsSyntax_to_js_attr_call$3, $DotJsSyntax_to_js_attr_assign_call$4;
-
         
         
-        Opal.def(self, '$on_send', $DotJsSyntax_on_send$1 = function $$on_send(node) {
-          var $a, $iter = $DotJsSyntax_on_send$1.$$p, $yield = $iter || nil, self = this, recv = nil, meth = nil, args = nil, $ret_or_1 = nil, recv_of_recv = nil, meth_of_recv = nil, _ = nil, $case = nil, property = nil, value = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        
+        $def(self, '$on_send', function $$on_send(node) {
+          var $a, $yield = $$on_send.$$p || nil, self = this, recv = nil, meth = nil, args = nil, recv_of_recv = nil, meth_of_recv = nil, _ = nil, $ret_or_1 = nil, property = nil, value = nil;
 
-          if ($iter) $DotJsSyntax_on_send$1.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$on_send.$$p;
           
-          $a = [].concat(Opal.to_a(node)), (recv = ($a[0] == null ? nil : $a[0])), (meth = ($a[1] == null ? nil : $a[1])), (args = $slice.call($a, 2)), $a;
-          if ($truthy((function() {if ($truthy(($ret_or_1 = recv))) {
-            return recv.$type()['$==']("send")
-          } else {
-            return $ret_or_1
-          }; return nil; })())) {
-            
-            $a = [].concat(Opal.to_a(recv)), (recv_of_recv = ($a[0] == null ? nil : $a[0])), (meth_of_recv = ($a[1] == null ? nil : $a[1])), (_ = ($a[2] == null ? nil : $a[2])), $a;
-            if (meth_of_recv['$==']("JS")) {
-              
-              $case = meth;
-              if ("[]"['$===']($case)) {
-              if ($truthy(args.$size()['$!='](1))) {
-                self.$error(".JS[:property] syntax supports only one argument")};
-              property = args.$first();
-              node = self.$to_js_attr_call(recv_of_recv, property);}
-              else if ("[]="['$===']($case)) {
-              if ($truthy(args.$size()['$!='](2))) {
-                self.$error(".JS[:property]= syntax supports only two arguments")};
-              $a = [].concat(Opal.to_a(args)), (property = ($a[0] == null ? nil : $a[0])), (value = ($a[1] == null ? nil : $a[1])), $a;
-              node = self.$to_js_attr_assign_call(recv_of_recv, property, value);}
-              else {node = self.$to_native_js_call(recv_of_recv, meth, args)};
-              return $send2(self, $find_super(self, 'on_send', $DotJsSyntax_on_send$1, false, true), 'on_send', [node], null);
+          $a = [].concat($to_a(node)), (recv = ($a[0] == null ? nil : $a[0])), (meth = ($a[1] == null ? nil : $a[1])), (args = $slice.call($a, 2)), $a;
+          if (($truthy(recv) && ($eqeq(recv.$type(), "send")))) {
+            
+            $a = [].concat($to_a(recv)), (recv_of_recv = ($a[0] == null ? nil : $a[0])), (meth_of_recv = ($a[1] == null ? nil : $a[1])), (_ = ($a[2] == null ? nil : $a[2])), $a;
+            if ($eqeq(meth_of_recv, "JS")) {
+              
+              if ($eqeqeq("[]", ($ret_or_1 = meth))) {
+                
+                if ($neqeq(args.$size(), 1)) {
+                  self.$error(".JS[:property] syntax supports only one argument")
+                };
+                property = args.$first();
+                node = self.$to_js_attr_call(recv_of_recv, property);
+              } else if ($eqeqeq("[]=", $ret_or_1)) {
+                
+                if ($neqeq(args.$size(), 2)) {
+                  self.$error(".JS[:property]= syntax supports only two arguments")
+                };
+                $a = [].concat($to_a(args)), (property = ($a[0] == null ? nil : $a[0])), (value = ($a[1] == null ? nil : $a[1])), $a;
+                node = self.$to_js_attr_assign_call(recv_of_recv, property, value);
+              } else {
+                node = self.$to_native_js_call(recv_of_recv, meth, args)
+              };
+              return $send2(self, $find_super(self, 'on_send', $$on_send, false, true), 'on_send', [node], null);
             } else {
-              return $send2(self, $find_super(self, 'on_send', $DotJsSyntax_on_send$1, false, true), 'on_send', $zuper, $iter)
+              return $send2(self, $find_super(self, 'on_send', $$on_send, false, true), 'on_send', [node], $yield)
             };
           } else {
-            return $send2(self, $find_super(self, 'on_send', $DotJsSyntax_on_send$1, false, true), 'on_send', $zuper, $iter)
+            return $send2(self, $find_super(self, 'on_send', $$on_send, false, true), 'on_send', [node], $yield)
           };
-        }, $DotJsSyntax_on_send$1.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$to_native_js_call', $DotJsSyntax_to_native_js_call$2 = function $$to_native_js_call(recv, meth, args) {
+        $def(self, '$to_native_js_call', function $$to_native_js_call(recv, meth, args) {
           var self = this;
 
-          return $send(self, 's', ["jscall", recv, meth].concat(Opal.to_a(args)))
-        }, $DotJsSyntax_to_native_js_call$2.$$arity = 3);
+          return $send(self, 's', ["jscall", recv, meth].concat($to_a(args)))
+        }, 3);
         
-        Opal.def(self, '$to_js_attr_call', $DotJsSyntax_to_js_attr_call$3 = function $$to_js_attr_call(recv, property) {
+        $def(self, '$to_js_attr_call', function $$to_js_attr_call(recv, property) {
           var self = this;
 
           return self.$s("jsattr", recv, property)
-        }, $DotJsSyntax_to_js_attr_call$3.$$arity = 2);
-        return (Opal.def(self, '$to_js_attr_assign_call', $DotJsSyntax_to_js_attr_assign_call$4 = function $$to_js_attr_assign_call(recv, property, value) {
+        }, 2);
+        return $def(self, '$to_js_attr_assign_call', function $$to_js_attr_assign_call(recv, property, value) {
           var self = this;
 
           return self.$s("jsattrasgn", recv, property, value)
-        }, $DotJsSyntax_to_js_attr_assign_call$4.$$arity = 3), nil) && 'to_js_attr_assign_call';
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+        }, 3);
+      })($nesting[0], $$('Base'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/rewriters/pattern_matching"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $slice = Opal.slice, $truthy = Opal.truthy, $send = Opal.send, $alias = Opal.alias;
+Opal.modules["opal/rewriters/pattern_matching"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def, $to_a = Opal.to_a, $rb_plus = Opal.rb_plus, $slice = Opal.slice, $truthy = Opal.truthy, $send = Opal.send, $eqeqeq = Opal.eqeqeq, $not = Opal.not, $neqeq = Opal.neqeq, $eqeq = Opal.eqeq, $alias = Opal.alias, $Opal = Opal.Opal;
 
-  Opal.add_stubs(['$require', '$s', '$convert_full_pattern', '$raise_no_matching_pattern_error', '$+', '$process', '$single_case_match', '$private', '$shift', '$type', '$===', '$!', '$empty?', '$!=', '$==', '$class', '$new', '$run!', '$variables', '$pattern', '$map', '$<<', '$array', '$on_literal', '$first', '$children', '$to_proc', '$method', '$each', '$to_ast', '$on_array_pattern', '$compact', '$[]']);
+  Opal.add_stubs('require,s,convert_full_pattern,raise_no_matching_pattern_error,+,process,single_case_match,private,shift,===,type,!,empty?,!=,==,class,new,run!,variables,pattern,map,<<,array,on_literal,first,children,to_proc,method,each,to_ast,on_array_pattern,compact,[]');
   
   self.$require("opal/rewriters/base");
   return (function($base, $parent_nesting) {
@@ -28788,173 +25855,164 @@ Opal.modules["opal/rewriters/pattern_matching"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Rewriters');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'PatternMatching');
 
-        var $nesting = [self].concat($parent_nesting), $PatternMatching_initialize$1, $PatternMatching_on_match_pattern$2, $PatternMatching_on_match_pattern_p$3, $PatternMatching_on_case_match$4, $PatternMatching_raise_no_matching_pattern_error$5, $PatternMatching_single_case_match$6, $PatternMatching_convert_full_pattern$7;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.depth = nil;
+        $proto.depth = nil;
         
         
-        Opal.def(self, '$initialize', $PatternMatching_initialize$1 = function $$initialize() {
-          var $iter = $PatternMatching_initialize$1.$$p, $yield = $iter || nil, self = this, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        $def(self, '$initialize', function $$initialize() {
+          var $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $PatternMatching_initialize$1.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$initialize.$$p;
           
           self.depth = 0;
-          return $send2(self, $find_super(self, 'initialize', $PatternMatching_initialize$1, false, true), 'initialize', $zuper, $iter);
-        }, $PatternMatching_initialize$1.$$arity = 0);
+          return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [], $yield);
+        }, 0);
         
-        Opal.def(self, '$on_match_pattern', $PatternMatching_on_match_pattern$2 = function $$on_match_pattern(node) {
+        $def(self, '$on_match_pattern', function $$on_match_pattern(node) {
           var $a, self = this, from = nil, pat = nil;
 
           
-          $a = [].concat(Opal.to_a(node)), (from = ($a[0] == null ? nil : $a[0])), (pat = ($a[1] == null ? nil : $a[1])), $a;
+          $a = [].concat($to_a(node)), (from = ($a[0] == null ? nil : $a[0])), (pat = ($a[1] == null ? nil : $a[1])), $a;
           return self.$s("begin", self.$s("lvasgn", "$pmvar", from), self.$s("if", self.$convert_full_pattern(from, pat), nil, self.$raise_no_matching_pattern_error("$pmvar")));
-        }, $PatternMatching_on_match_pattern$2.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$on_match_pattern_p', $PatternMatching_on_match_pattern_p$3 = function $$on_match_pattern_p(node) {
+        $def(self, '$on_match_pattern_p', function $$on_match_pattern_p(node) {
           var $a, self = this, from = nil, pat = nil;
 
           
-          $a = [].concat(Opal.to_a(node)), (from = ($a[0] == null ? nil : $a[0])), (pat = ($a[1] == null ? nil : $a[1])), $a;
+          $a = [].concat($to_a(node)), (from = ($a[0] == null ? nil : $a[0])), (pat = ($a[1] == null ? nil : $a[1])), $a;
           return self.$s("if", self.$convert_full_pattern(from, pat), self.$s("true"), self.$s("false"));
-        }, $PatternMatching_on_match_pattern_p$3.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$on_case_match', $PatternMatching_on_case_match$4 = function $$on_case_match(node) {
+        $def(self, '$on_case_match', function $$on_case_match(node) {
           var $a, $b, self = this, cmvar = nil, from = nil, cases = nil, els = nil;
 
           
           self.depth = $rb_plus(self.depth, 1);
-          cmvar = "" + "$cmvar" + (self.depth);
-          $a = [].concat(Opal.to_a(node)), (from = ($a[0] == null ? nil : $a[0])), $b = $a.length - 1, $b = ($b < 1) ? 1 : $b, (cases = $slice.call($a, 1, $b)), (els = ($a[$b] == null ? nil : $a[$b])), $a;
+          cmvar = "$cmvar" + (self.depth);
+          $a = [].concat($to_a(node)), (from = ($a[0] == null ? nil : $a[0])), $b = $a.length - 1, $b = ($b < 1) ? 1 : $b, (cases = $slice.call($a, 1, $b)), (els = ($a[$b] == null ? nil : $a[$b])), $a;
           if ($truthy(els)) {
             self.$process(els)
           } else {
             els = self.$raise_no_matching_pattern_error(cmvar)
           };
-          return self.$s("begin", self.$s("lvasgn", cmvar, from), $send(self, 'single_case_match', [cmvar].concat(Opal.to_a(cases)).concat([els])));
-        }, $PatternMatching_on_case_match$4.$$arity = 1);
+          return self.$s("begin", self.$s("lvasgn", cmvar, from), $send(self, 'single_case_match', [cmvar].concat($to_a(cases)).concat([els])));
+        }, 1);
         self.$private();
         
-        Opal.def(self, '$raise_no_matching_pattern_error', $PatternMatching_raise_no_matching_pattern_error$5 = function $$raise_no_matching_pattern_error(from) {
+        $def(self, '$raise_no_matching_pattern_error', function $$raise_no_matching_pattern_error(from) {
           var self = this;
 
-          return self.$s("send", nil, "raise", self.$s("const", nil, "NoMatchingPatternError"), self.$s("lvar", from))
-        }, $PatternMatching_raise_no_matching_pattern_error$5.$$arity = 1);
+          return self.$s("send", nil, "raise", self.$s("const", self.$s("cbase"), "NoMatchingPatternError"), self.$s("lvar", from))
+        }, 1);
         
-        Opal.def(self, '$single_case_match', $PatternMatching_single_case_match$6 = function $$single_case_match(from, $a, $b) {
-          var $post_args, cases, els, $c, self = this, cas = nil, pat = nil, if_guard = nil, body = nil, guard = nil, $case = nil;
+        $def(self, '$single_case_match', function $$single_case_match(from, $a, $b) {
+          var $post_args, cases, els, $c, self = this, cas = nil, pat = nil, if_guard = nil, body = nil, guard = nil, $ret_or_1 = nil;
 
           
           
-          $post_args = Opal.slice.call(arguments, 1, arguments.length);
+          $post_args = Opal.slice.call(arguments, 1);
           
           cases = $post_args.splice(0, $post_args.length - 1);;
           
-          els = $post_args[0];
-          $post_args.splice(0, 1);
-          if (els == null) {
-            els = nil
-          };
+          els = $post_args.shift();
+          if (els == null) els = nil;;
           cas = cases.$shift();
-          $c = [].concat(Opal.to_a(cas)), (pat = ($c[0] == null ? nil : $c[0])), (if_guard = ($c[1] == null ? nil : $c[1])), (body = ($c[2] == null ? nil : $c[2])), $c;
+          $c = [].concat($to_a(cas)), (pat = ($c[0] == null ? nil : $c[0])), (if_guard = ($c[1] == null ? nil : $c[1])), (body = ($c[2] == null ? nil : $c[2])), $c;
           pat = self.$convert_full_pattern(from, pat);
           if ($truthy(if_guard)) {
             
-            $c = [].concat(Opal.to_a(if_guard)), (guard = ($c[0] == null ? nil : $c[0])), $c;
-            $case = if_guard.$type();
-            if ("if_guard"['$===']($case)) {pat = self.$s("and", pat, guard)}
-            else if ("unless_guard"['$===']($case)) {pat = self.$s("and", pat, self.$s("send", guard, "!"))};};
-          return self.$s("if", pat, self.$process(body), (function() {if ($truthy(cases['$empty?']()['$!']())) {
-            return $send(self, 'single_case_match', [from].concat(Opal.to_a(cases)).concat([els]))
-          } else if ($truthy(els['$!='](self.$s("empty_else")))) {
-            return els
-          } else {
-            return nil
-          }; return nil; })());
-        }, $PatternMatching_single_case_match$6.$$arity = -3);
+            $c = [].concat($to_a(if_guard)), (guard = ($c[0] == null ? nil : $c[0])), $c;
+            if ($eqeqeq("if_guard", ($ret_or_1 = if_guard.$type()))) {
+              pat = self.$s("and", pat, guard)
+            } else if ($eqeqeq("unless_guard", $ret_or_1)) {
+              pat = self.$s("and", pat, self.$s("send", guard, "!"))
+            } else {
+              nil
+            };
+          };
+          return self.$s("if", pat, self.$process(body), ($not(cases['$empty?']()) ? ($send(self, 'single_case_match', [from].concat($to_a(cases)).concat([els]))) : ($neqeq(els, self.$s("empty_else")) ? (els) : nil)));
+        }, -3);
         
-        Opal.def(self, '$convert_full_pattern', $PatternMatching_convert_full_pattern$7 = function $$convert_full_pattern(from, pat) {
+        $def(self, '$convert_full_pattern', function $$convert_full_pattern(from, pat) {
           var self = this, converter = nil;
 
           
-          if (from.$class()['$==']($$($nesting, 'Symbol'))) {
-            from = self.$s("lvar", from)};
-          converter = $$($nesting, 'PatternConverter').$new(pat);
+          if ($eqeq(from.$class(), $$('Symbol'))) {
+            from = self.$s("lvar", from)
+          };
+          converter = $$('PatternConverter').$new(pat);
           converter['$run!']();
-          return self.$s("masgn", $send(self, 's', ["mlhs"].concat(Opal.to_a(converter.$variables()))), self.$s("send", self.$s("const", self.$s("cbase"), "PatternMatching"), "call", from, converter.$pattern()));
-        }, $PatternMatching_convert_full_pattern$7.$$arity = 2);
+          return self.$s("masgn", $send(self, 's', ["mlhs"].concat($to_a(converter.$variables()))), self.$s("send", self.$s("const", self.$s("cbase"), "PatternMatching"), "call", from, converter.$pattern()));
+        }, 2);
         return (function($base, $super, $parent_nesting) {
           var self = $klass($base, $super, 'PatternConverter');
 
-          var $nesting = [self].concat($parent_nesting), $PatternConverter_initialize$8, $PatternConverter_run$excl$9, $PatternConverter_pattern$10, $PatternConverter_variables$11, $PatternConverter_on_match_var$13, $PatternConverter_on_match_as$14, $PatternConverter_on_literal$15, $PatternConverter_on_pin$16, $PatternConverter_on_match_rest$17, $PatternConverter_on_match_alt$18, $PatternConverter_on_const_pattern$19, $PatternConverter_on_array_pattern$20, $PatternConverter_on_array_pattern_with_tail$22, $PatternConverter_on_hash_pattern$23, $PatternConverter_on_find_pattern$25, $PatternConverter_array$26, $PatternConverter_to_ast$27;
+          var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-          self.$$prototype.pat = self.$$prototype.outpat = self.$$prototype.variables = nil;
+          $proto.pat = $proto.outpat = $proto.variables = nil;
           
           
-          Opal.def(self, '$initialize', $PatternConverter_initialize$8 = function $$initialize(pat) {
+          $def(self, '$initialize', function $$initialize(pat) {
             var self = this;
 
             
             self.pat = pat;
             return (self.variables = []);
-          }, $PatternConverter_initialize$8.$$arity = 1);
+          }, 1);
           
-          Opal.def(self, '$run!', $PatternConverter_run$excl$9 = function() {
+          $def(self, '$run!', function $PatternConverter_run$excl$1() {
             var self = this;
 
             return (self.outpat = self.$process(self.pat))
-          }, $PatternConverter_run$excl$9.$$arity = 0);
+          }, 0);
           
-          Opal.def(self, '$pattern', $PatternConverter_pattern$10 = function $$pattern() {
+          $def(self, '$pattern', function $$pattern() {
             var self = this;
 
             return self.outpat
-          }, $PatternConverter_pattern$10.$$arity = 0);
+          }, 0);
           
-          Opal.def(self, '$variables', $PatternConverter_variables$11 = function $$variables() {
-            var $$12, self = this;
+          $def(self, '$variables', function $$variables() {
+            var self = this;
 
-            return $send(self.variables, 'map', [], ($$12 = function(i){var self = $$12.$$s == null ? this : $$12.$$s;
+            return $send(self.variables, 'map', [], function $$2(i){var self = $$2.$$s == null ? this : $$2.$$s;
 
               
               
-              if (i == null) {
-                i = nil;
-              };
-              return self.$s("lvasgn", i);}, $$12.$$s = self, $$12.$$arity = 1, $$12))
-          }, $PatternConverter_variables$11.$$arity = 0);
+              if (i == null) i = nil;;
+              return self.$s("lvasgn", i);}, {$$arity: 1, $$s: self})
+          }, 0);
           
-          Opal.def(self, '$on_match_var', $PatternConverter_on_match_var$13 = function $$on_match_var(node) {
+          $def(self, '$on_match_var', function $$on_match_var(node) {
             var $a, self = this, var$ = nil;
 
             
-            $a = [].concat(Opal.to_a(node)), (var$ = ($a[0] == null ? nil : $a[0])), $a;
+            $a = [].concat($to_a(node)), (var$ = ($a[0] == null ? nil : $a[0])), $a;
             self.variables['$<<'](var$);
             return self.$s("sym", "var");
-          }, $PatternConverter_on_match_var$13.$$arity = 1);
+          }, 1);
           
-          Opal.def(self, '$on_match_as', $PatternConverter_on_match_as$14 = function $$on_match_as(node) {
+          $def(self, '$on_match_as', function $$on_match_as(node) {
             var $a, self = this, pat = nil, save = nil;
 
             
-            $a = [].concat(Opal.to_a(node)), (pat = ($a[0] == null ? nil : $a[0])), (save = ($a[1] == null ? nil : $a[1])), $a;
+            $a = [].concat($to_a(node)), (pat = ($a[0] == null ? nil : $a[0])), (save = ($a[1] == null ? nil : $a[1])), $a;
             self.$process(save);
             return self.$array(self.$s("sym", "save"), self.$process(pat));
-          }, $PatternConverter_on_match_as$14.$$arity = 1);
+          }, 1);
           
-          Opal.def(self, '$on_literal', $PatternConverter_on_literal$15 = function $$on_literal(node) {
+          $def(self, '$on_literal', function $$on_literal(node) {
             var self = this;
 
             return self.$array(self.$s("sym", "lit"), node)
-          }, $PatternConverter_on_literal$15.$$arity = 1);
+          }, 1);
           $alias(self, "on_int", "on_literal");
           $alias(self, "on_float", "on_literal");
           $alias(self, "on_complex", "on_literal");
@@ -28971,13 +26029,13 @@ Opal.modules["opal/rewriters/pattern_matching"] = function(Opal) {
           $alias(self, "on_lambda", "on_literal");
           $alias(self, "on_begin", "on_literal");
           
-          Opal.def(self, '$on_pin', $PatternConverter_on_pin$16 = function $$on_pin(node) {
+          $def(self, '$on_pin', function $$on_pin(node) {
             var self = this;
 
             return self.$on_literal(node.$children().$first())
-          }, $PatternConverter_on_pin$16.$$arity = 1);
+          }, 1);
           
-          Opal.def(self, '$on_match_rest', $PatternConverter_on_match_rest$17 = function $$on_match_rest(node) {
+          $def(self, '$on_match_rest', function $$on_match_rest(node) {
             var self = this;
 
             if ($truthy(node.$children()['$empty?']())) {
@@ -28985,131 +26043,131 @@ Opal.modules["opal/rewriters/pattern_matching"] = function(Opal) {
             } else {
               return self.$array(self.$s("sym", "rest"), self.$process(node.$children().$first()))
             }
-          }, $PatternConverter_on_match_rest$17.$$arity = 1);
+          }, 1);
           
-          Opal.def(self, '$on_match_alt', $PatternConverter_on_match_alt$18 = function $$on_match_alt(node) {
+          $def(self, '$on_match_alt', function $$on_match_alt(node) {
             var self = this;
 
-            return $send(self, 'array', [self.$s("sym", "any")].concat(Opal.to_a($send(node.$children(), 'map', [], self.$method("process").$to_proc()))))
-          }, $PatternConverter_on_match_alt$18.$$arity = 1);
+            return $send(self, 'array', [self.$s("sym", "any")].concat($to_a($send(node.$children(), 'map', [], self.$method("process").$to_proc()))))
+          }, 1);
           
-          Opal.def(self, '$on_const_pattern', $PatternConverter_on_const_pattern$19 = function $$on_const_pattern(node) {
+          $def(self, '$on_const_pattern', function $$on_const_pattern(node) {
             var self = this;
 
-            return $send(self, 'array', [self.$s("sym", "all")].concat(Opal.to_a($send(node.$children(), 'map', [], self.$method("process").$to_proc()))))
-          }, $PatternConverter_on_const_pattern$19.$$arity = 1);
+            return $send(self, 'array', [self.$s("sym", "all")].concat($to_a($send(node.$children(), 'map', [], self.$method("process").$to_proc()))))
+          }, 1);
           
-          Opal.def(self, '$on_array_pattern', $PatternConverter_on_array_pattern$20 = function $$on_array_pattern(node, tail) {
-            var $$21, self = this, children = nil, fixed_size = nil, array_size = nil;
+          $def(self, '$on_array_pattern', function $$on_array_pattern(node, tail) {
+            var self = this, children = nil, fixed_size = nil, array_size = nil;
 
             
             
-            if (tail == null) {
-              tail = false;
-            };
-            children = [].concat(Opal.to_a(node));
+            if (tail == null) tail = false;;
+            children = [].concat($to_a(node));
             if ($truthy(tail)) {
-              children['$<<'](self.$s("match_rest"))};
+              children['$<<'](self.$s("match_rest"))
+            };
             fixed_size = true;
             array_size = 0;
-            children = $send(children, 'each', [], ($$21 = function(i){var self = $$21.$$s == null ? this : $$21.$$s, $case = nil;
+            children = $send(children, 'each', [], function $$3(i){var $ret_or_1 = nil;
 
               
               
-              if (i == null) {
-                i = nil;
-              };
-              return (function() {$case = i.$type();
-              if ("match_rest"['$===']($case)) {return (fixed_size = false)}
-              else {return (array_size = $rb_plus(array_size, 1))}})();}, $$21.$$s = self, $$21.$$arity = 1, $$21));
+              if (i == null) i = nil;;
+              if ($eqeqeq("match_rest", ($ret_or_1 = i.$type()))) {
+                return (fixed_size = false)
+              } else {
+                return (array_size = $rb_plus(array_size, 1))
+              };}, 1);
             return self.$array(self.$s("sym", "array"), self.$to_ast(fixed_size), self.$to_ast(array_size), self.$to_ast($send(children, 'map', [], self.$method("process").$to_proc())));
-          }, $PatternConverter_on_array_pattern$20.$$arity = -2);
+          }, -2);
           
-          Opal.def(self, '$on_array_pattern_with_tail', $PatternConverter_on_array_pattern_with_tail$22 = function $$on_array_pattern_with_tail(node) {
+          $def(self, '$on_array_pattern_with_tail', function $$on_array_pattern_with_tail(node) {
             var self = this;
 
             return self.$on_array_pattern(node, true)
-          }, $PatternConverter_on_array_pattern_with_tail$22.$$arity = 1);
+          }, 1);
           
-          Opal.def(self, '$on_hash_pattern', $PatternConverter_on_hash_pattern$23 = function $$on_hash_pattern(node) {
-            var $$24, self = this, children = nil, any_size = nil;
+          $def(self, '$on_hash_pattern', function $$on_hash_pattern(node) {
+            var self = this, children = nil, any_size = nil;
 
             
-            children = [].concat(Opal.to_a(node));
-            any_size = (function() {if ($truthy(children['$empty?']())) {
-              return self.$to_ast(false)
-            } else {
-              return self.$to_ast(true)
-            }; return nil; })();
-            children = $send(children, 'map', [], ($$24 = function(i){var self = $$24.$$s == null ? this : $$24.$$s, $case = nil;
+            children = [].concat($to_a(node));
+            any_size = ($truthy(children['$empty?']()) ? (self.$to_ast(false)) : (self.$to_ast(true)));
+            children = $send(children, 'map', [], function $$4(i){var self = $$4.$$s == null ? this : $$4.$$s, $ret_or_1 = nil;
 
               
               
-              if (i == null) {
-                i = nil;
-              };
-              return (function() {$case = i.$type();
-              if ("pair"['$===']($case)) {return self.$array(i.$children()['$[]'](0), self.$process(i.$children()['$[]'](1)))}
-              else if ("match_var"['$===']($case)) {return self.$array(self.$s("sym", i.$children()['$[]'](0)), self.$process(i))}
-              else if ("match_nil_pattern"['$===']($case)) {
-              any_size = self.$to_ast(false);
-              return nil;}
-              else if ("match_rest"['$===']($case)) {
-              if ($truthy(i.$children().$first())) {
-                any_size = self.$process(i.$children().$first())
+              if (i == null) i = nil;;
+              if ($eqeqeq("pair", ($ret_or_1 = i.$type()))) {
+                return self.$array(i.$children()['$[]'](0), self.$process(i.$children()['$[]'](1)))
+              } else if ($eqeqeq("match_var", $ret_or_1)) {
+                return self.$array(self.$s("sym", i.$children()['$[]'](0)), self.$process(i))
+              } else if ($eqeqeq("match_nil_pattern", $ret_or_1)) {
+                
+                any_size = self.$to_ast(false);
+                return nil;
+              } else if ($eqeqeq("match_rest", $ret_or_1)) {
+                
+                if ($truthy(i.$children().$first())) {
+                  any_size = self.$process(i.$children().$first())
+                } else {
+                  any_size = self.$to_ast(true)
+                };
+                return nil;
               } else {
-                any_size = self.$to_ast(true)
-              };
-              return nil;}
-              else { return nil }})();}, $$24.$$s = self, $$24.$$arity = 1, $$24)).$compact();
-            return self.$array(self.$s("sym", "hash"), any_size, $send(self, 'array', Opal.to_a(children)));
-          }, $PatternConverter_on_hash_pattern$23.$$arity = 1);
+                return nil
+              };}, {$$arity: 1, $$s: self}).$compact();
+            return self.$array(self.$s("sym", "hash"), any_size, $send(self, 'array', $to_a(children)));
+          }, 1);
           
-          Opal.def(self, '$on_find_pattern', $PatternConverter_on_find_pattern$25 = function $$on_find_pattern(node) {
+          $def(self, '$on_find_pattern', function $$on_find_pattern(node) {
             var self = this, children = nil;
 
             
-            children = [].concat(Opal.to_a(node));
+            children = [].concat($to_a(node));
             children = $send(children, 'map', [], self.$method("process").$to_proc());
-            return self.$array(self.$s("sym", "find"), $send(self, 'array', Opal.to_a(children)));
-          }, $PatternConverter_on_find_pattern$25.$$arity = 1);
+            return self.$array(self.$s("sym", "find"), $send(self, 'array', $to_a(children)));
+          }, 1);
           self.$private();
           
-          Opal.def(self, '$array', $PatternConverter_array$26 = function $$array($a) {
+          $def(self, '$array', function $$array($a) {
             var $post_args, args, self = this;
 
             
             
-            $post_args = Opal.slice.call(arguments, 0, arguments.length);
+            $post_args = Opal.slice.call(arguments);
             
             args = $post_args;;
             return self.$to_ast(args);
-          }, $PatternConverter_array$26.$$arity = -1);
-          return (Opal.def(self, '$to_ast', $PatternConverter_to_ast$27 = function $$to_ast(val) {
-            var self = this, $case = nil;
-
-            return (function() {$case = val;
-            if ($$($nesting, 'Array')['$===']($case)) {return $send(self, 's', ["array"].concat(Opal.to_a(val)))}
-            else if ($$($nesting, 'Integer')['$===']($case)) {return self.$s("int", val)}
-            else if (true['$===']($case)) {return self.$s("true")}
-            else if (false['$===']($case)) {return self.$s("false")}
-            else if (nil['$===']($case)) {return self.$s("nil")}
-            else { return nil }})()
-          }, $PatternConverter_to_ast$27.$$arity = 1), nil) && 'to_ast';
-        })($nesting[0], $$$($$$($$$('::', 'Opal'), 'Rewriters'), 'Base'), $nesting);
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+          }, -1);
+          return $def(self, '$to_ast', function $$to_ast(val) {
+            var self = this, $ret_or_1 = nil;
+
+            if ($eqeqeq($$('Array'), ($ret_or_1 = val))) {
+              return $send(self, 's', ["array"].concat($to_a(val)))
+            } else if ($eqeqeq($$('Integer'), $ret_or_1)) {
+              return self.$s("int", val)
+            } else if ($eqeqeq(true, $ret_or_1)) {
+              return self.$s("true")
+            } else if ($eqeqeq(false, $ret_or_1)) {
+              return self.$s("false")
+            } else if ($eqeqeq(nil, $ret_or_1)) {
+              return self.$s("nil")
+            } else {
+              return nil
+            }
+          }, 1);
+        })($nesting[0], $$$($$$($Opal, 'Rewriters'), 'Base'), $nesting);
+      })($nesting[0], $$('Base'), $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/rewriters/logical_operator_assignment"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $class_variable_set = Opal.class_variable_set, $truthy = Opal.truthy, $class_variable_get = Opal.class_variable_get, $lambda = Opal.lambda, $slice = Opal.slice, $hash2 = Opal.hash2, $send = Opal.send, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["opal/rewriters/logical_operator_assignment"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $class_variable_set = Opal.class_variable_set, $defs = Opal.defs, $truthy = Opal.truthy, $class_variable_get = Opal.class_variable_get, $rb_plus = Opal.rb_plus, $const_set = Opal.const_set, $lambda = Opal.lambda, $eqeq = Opal.eqeq, $to_a = Opal.to_a, $slice = Opal.slice, $hash2 = Opal.hash2, $send = Opal.send, $def = Opal.def, $send2 = Opal.send2, $find_super = Opal.find_super;
 
-  Opal.add_stubs(['$require', '$+', '$updated', '$s', '$include?', '$==', '$[]', '$type', '$new_temp', '$freeze', '$call', '$fetch', '$error', '$process']);
+  Opal.add_stubs('require,+,updated,s,==,include?,[],type,new_temp,freeze,call,fetch,error,process');
   
   self.$require("opal/rewriters/base");
   return (function($base, $parent_nesting) {
@@ -29120,177 +26178,145 @@ Opal.modules["opal/rewriters/logical_operator_assignment"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Rewriters');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'LogicalOperatorAssignment');
 
-        var $nesting = [self].concat($parent_nesting), $LogicalOperatorAssignment_reset_tmp_counter$excl$1, $LogicalOperatorAssignment_new_temp$2, $LogicalOperatorAssignment$3, $LogicalOperatorAssignment_on_or_asgn$7, $LogicalOperatorAssignment_on_and_asgn$9, $LogicalOperatorAssignment_on_defined$ques$11;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
         
-        Opal.defs(self, '$reset_tmp_counter!', $LogicalOperatorAssignment_reset_tmp_counter$excl$1 = function() {
-          var self = this;
-
+        $defs(self, '$reset_tmp_counter!', function $LogicalOperatorAssignment_reset_tmp_counter$excl$1() {
+          
           return $class_variable_set($nesting[0], '@@counter', 0)
-        }, $LogicalOperatorAssignment_reset_tmp_counter$excl$1.$$arity = 0);
-        Opal.defs(self, '$new_temp', $LogicalOperatorAssignment_new_temp$2 = function $$new_temp() {
-          var $a, self = this, $ret_or_1 = nil;
+        }, 0);
+        $defs(self, '$new_temp', function $$new_temp() {
+          var $a, $ret_or_1 = nil;
 
           
-          $class_variable_set($nesting[0], '@@counter', (function() {if ($truthy((($a = $nesting[0].$$cvars['@@counter'], $a != null) ? 'class variable' : nil))) {
-            
-            if ($truthy(($ret_or_1 = $class_variable_get($nesting[0], '@@counter', false)))) {
-              return $ret_or_1
-            } else {
-              return 0
-            };
-          } else {
-            return 0
-          }; return nil; })());
+          $class_variable_set($nesting[0], '@@counter', ($truthy((($a = $nesting[0].$$cvars['@@counter'], $a != null) ? 'class variable' : nil)) ? (($truthy(($ret_or_1 = $class_variable_get($nesting[0], '@@counter', false))) ? ($ret_or_1) : (0))) : (0)));
           $class_variable_set($nesting[0], '@@counter', $rb_plus($class_variable_get($nesting[0], '@@counter', false), 1));
-          return "" + "$logical_op_recvr_tmp_" + ($class_variable_get($nesting[0], '@@counter', false));
-        }, $LogicalOperatorAssignment_new_temp$2.$$arity = 0);
-        Opal.const_set($nesting[0], 'GET_SET', $lambda(($LogicalOperatorAssignment$3 = function(get_type, set_type){var self = $LogicalOperatorAssignment$3.$$s == null ? this : $LogicalOperatorAssignment$3.$$s, $$4;
+          return "$logical_op_recvr_tmp_" + ($class_variable_get($nesting[0], '@@counter', false));
+        }, 0);
+        $const_set($nesting[0], 'GET_SET', $lambda(function $LogicalOperatorAssignment$2(get_type, set_type){var self = $LogicalOperatorAssignment$2.$$s == null ? this : $LogicalOperatorAssignment$2.$$s;
 
           
           
-          if (get_type == null) {
-            get_type = nil;
-          };
+          if (get_type == null) get_type = nil;;
           
-          if (set_type == null) {
-            set_type = nil;
-          };
-          return $lambda(($$4 = function(lhs, rhs, root_type){var self = $$4.$$s == null ? this : $$4.$$s, get_node = nil, condition_node = nil, $ret_or_2 = nil, defined_node = nil;
+          if (set_type == null) set_type = nil;;
+          return $lambda(function $$3(lhs, rhs, root_type){var self = $$3.$$s == null ? this : $$3.$$s, get_node = nil, condition_node = nil, defined_node = nil;
 
             
             
-            if (lhs == null) {
-              lhs = nil;
-            };
+            if (lhs == null) lhs = nil;;
             
-            if (rhs == null) {
-              rhs = nil;
-            };
+            if (rhs == null) rhs = nil;;
             
-            if (root_type == null) {
-              root_type = nil;
-            };
+            if (root_type == null) root_type = nil;;
             get_node = lhs.$updated(get_type);
             condition_node = self.$s(root_type, get_node, rhs);
-            if ($truthy((function() {if ($truthy(($ret_or_2 = ["const", "cvar"]['$include?'](get_type)))) {
-              return root_type['$==']("or")
-            } else {
-              return $ret_or_2
-            }; return nil; })())) {
+            if (($truthy(["const", "cvar"]['$include?'](get_type)) && ($eqeq(root_type, "or")))) {
               
               defined_node = self.$s("defined?", get_node);
-              condition_node = self.$s("if", defined_node, self.$s("begin", condition_node), rhs);};
-            return lhs.$updated(set_type, [].concat(Opal.to_a(lhs)).concat([condition_node]));}, $$4.$$s = self, $$4.$$arity = 3, $$4));}, $LogicalOperatorAssignment$3.$$s = self, $LogicalOperatorAssignment$3.$$arity = 2, $LogicalOperatorAssignment$3)));
-        Opal.const_set($nesting[0], 'LocalVariableHandler', $$($nesting, 'GET_SET')['$[]']("lvar", "lvasgn"));
-        Opal.const_set($nesting[0], 'InstanceVariableHandler', $$($nesting, 'GET_SET')['$[]']("ivar", "ivasgn"));
-        Opal.const_set($nesting[0], 'ConstantHandler', $$($nesting, 'GET_SET')['$[]']("const", "casgn"));
-        Opal.const_set($nesting[0], 'GlobalVariableHandler', $$($nesting, 'GET_SET')['$[]']("gvar", "gvasgn"));
-        Opal.const_set($nesting[0], 'ClassVariableHandler', $$($nesting, 'GET_SET')['$[]']("cvar", "cvasgn"));
-        (function($base, $super, $parent_nesting) {
+              condition_node = self.$s("if", defined_node, self.$s("begin", condition_node), rhs);
+            };
+            return lhs.$updated(set_type, [].concat($to_a(lhs)).concat([condition_node]));}, {$$arity: 3, $$s: self});}, {$$arity: 2, $$s: self}));
+        $const_set($nesting[0], 'LocalVariableHandler', $$('GET_SET')['$[]']("lvar", "lvasgn"));
+        $const_set($nesting[0], 'InstanceVariableHandler', $$('GET_SET')['$[]']("ivar", "ivasgn"));
+        $const_set($nesting[0], 'ConstantHandler', $$('GET_SET')['$[]']("const", "casgn"));
+        $const_set($nesting[0], 'GlobalVariableHandler', $$('GET_SET')['$[]']("gvar", "gvasgn"));
+        $const_set($nesting[0], 'ClassVariableHandler', $$('GET_SET')['$[]']("cvar", "cvasgn"));
+        (function($base, $super) {
           var self = $klass($base, $super, 'SendHandler');
 
-          var $nesting = [self].concat($parent_nesting), $SendHandler_call$5;
-
-          return (Opal.defs(self, '$call', $SendHandler_call$5 = function $$call(lhs, rhs, root_type) {
-            var $a, self = this, recvr = nil, reader_method = nil, args = nil, $ret_or_3 = nil, recvr_tmp = nil, cache_recvr = nil, writer_method = nil, call_reader = nil, call_writer = nil, get_or_set = nil;
+          
+          return $defs(self, '$call', function $$call(lhs, rhs, root_type) {
+            var $a, self = this, recvr = nil, reader_method = nil, args = nil, recvr_tmp = nil, cache_recvr = nil, writer_method = nil, call_reader = nil, call_writer = nil, get_or_set = nil;
 
             
-            $a = [].concat(Opal.to_a(lhs)), (recvr = ($a[0] == null ? nil : $a[0])), (reader_method = ($a[1] == null ? nil : $a[1])), (args = $slice.call($a, 2)), $a;
-            if ($truthy((function() {if ($truthy(($ret_or_3 = recvr))) {
-              return recvr.$type()['$==']("send")
-            } else {
-              return $ret_or_3
-            }; return nil; })())) {
+            $a = [].concat($to_a(lhs)), (recvr = ($a[0] == null ? nil : $a[0])), (reader_method = ($a[1] == null ? nil : $a[1])), (args = $slice.call($a, 2)), $a;
+            if (($truthy(recvr) && ($eqeq(recvr.$type(), "send")))) {
               
               recvr_tmp = self.$new_temp();
               cache_recvr = self.$s("lvasgn", recvr_tmp, recvr);
-              recvr = self.$s("js_tmp", recvr_tmp);};
+              recvr = self.$s("js_tmp", recvr_tmp);
+            };
             writer_method = "" + (reader_method) + "=";
-            call_reader = lhs.$updated("send", [recvr, reader_method].concat(Opal.to_a(args)));
-            call_writer = lhs.$updated("send", [recvr, writer_method].concat(Opal.to_a(args)).concat([rhs]));
+            call_reader = lhs.$updated("send", [recvr, reader_method].concat($to_a(args)));
+            call_writer = lhs.$updated("send", [recvr, writer_method].concat($to_a(args)).concat([rhs]));
             get_or_set = self.$s(root_type, call_reader, call_writer);
             if ($truthy(cache_recvr)) {
               return self.$s("begin", cache_recvr, get_or_set)
             } else {
               return get_or_set
             };
-          }, $SendHandler_call$5.$$arity = 3), nil) && 'call'
-        })($nesting[0], self, $nesting);
-        (function($base, $super, $parent_nesting) {
+          }, 3)
+        })($nesting[0], self);
+        (function($base, $super) {
           var self = $klass($base, $super, 'ConditionalSendHandler');
 
-          var $nesting = [self].concat($parent_nesting), $ConditionalSendHandler_call$6;
-
-          return (Opal.defs(self, '$call', $ConditionalSendHandler_call$6 = function $$call(lhs, rhs, root_type) {
+          
+          return $defs(self, '$call', function $$call(lhs, rhs, root_type) {
             var $a, self = this, recvr = nil, meth = nil, args = nil, recvr_tmp = nil, cache_recvr = nil, recvr_is_nil = nil, plain_send = nil, plain_or_asgn = nil;
 
             
             root_type = "" + (root_type) + "_asgn";
-            $a = [].concat(Opal.to_a(lhs)), (recvr = ($a[0] == null ? nil : $a[0])), (meth = ($a[1] == null ? nil : $a[1])), (args = $slice.call($a, 2)), $a;
+            $a = [].concat($to_a(lhs)), (recvr = ($a[0] == null ? nil : $a[0])), (meth = ($a[1] == null ? nil : $a[1])), (args = $slice.call($a, 2)), $a;
             recvr_tmp = self.$new_temp();
             cache_recvr = self.$s("lvasgn", recvr_tmp, recvr);
             recvr = self.$s("js_tmp", recvr_tmp);
             recvr_is_nil = self.$s("send", recvr, "nil?");
-            plain_send = lhs.$updated("send", [recvr, meth].concat(Opal.to_a(args)));
+            plain_send = lhs.$updated("send", [recvr, meth].concat($to_a(args)));
             plain_or_asgn = self.$s(root_type, plain_send, rhs);
             return self.$s("begin", cache_recvr, self.$s("if", recvr_is_nil, self.$s("nil"), plain_or_asgn));
-          }, $ConditionalSendHandler_call$6.$$arity = 3), nil) && 'call'
-        })($nesting[0], self, $nesting);
-        Opal.const_set($nesting[0], 'HANDLERS', $hash2(["lvasgn", "ivasgn", "casgn", "gvasgn", "cvasgn", "send", "csend"], {"lvasgn": $$($nesting, 'LocalVariableHandler'), "ivasgn": $$($nesting, 'InstanceVariableHandler'), "casgn": $$($nesting, 'ConstantHandler'), "gvasgn": $$($nesting, 'GlobalVariableHandler'), "cvasgn": $$($nesting, 'ClassVariableHandler'), "send": $$($nesting, 'SendHandler'), "csend": $$($nesting, 'ConditionalSendHandler')}).$freeze());
+          }, 3)
+        })($nesting[0], self);
+        $const_set($nesting[0], 'HANDLERS', $hash2(["lvasgn", "ivasgn", "casgn", "gvasgn", "cvasgn", "send", "csend"], {"lvasgn": $$('LocalVariableHandler'), "ivasgn": $$('InstanceVariableHandler'), "casgn": $$('ConstantHandler'), "gvasgn": $$('GlobalVariableHandler'), "cvasgn": $$('ClassVariableHandler'), "send": $$('SendHandler'), "csend": $$('ConditionalSendHandler')}).$freeze());
         
-        Opal.def(self, '$on_or_asgn', $LogicalOperatorAssignment_on_or_asgn$7 = function $$on_or_asgn(node) {
-          var $a, $$8, self = this, lhs = nil, rhs = nil, result = nil;
+        $def(self, '$on_or_asgn', function $$on_or_asgn(node) {
+          var $a, self = this, lhs = nil, rhs = nil, result = nil;
 
           
-          $a = [].concat(Opal.to_a(node)), (lhs = ($a[0] == null ? nil : $a[0])), (rhs = ($a[1] == null ? nil : $a[1])), $a;
-          result = $send($$($nesting, 'HANDLERS'), 'fetch', [lhs.$type()], ($$8 = function(){var self = $$8.$$s == null ? this : $$8.$$s;
+          $a = [].concat($to_a(node)), (lhs = ($a[0] == null ? nil : $a[0])), (rhs = ($a[1] == null ? nil : $a[1])), $a;
+          result = $send($$('HANDLERS'), 'fetch', [lhs.$type()], function $$4(){var self = $$4.$$s == null ? this : $$4.$$s;
 
-            return self.$error("" + "cannot handle LHS type: " + (lhs.$type()))}, $$8.$$s = self, $$8.$$arity = 0, $$8)).$call(lhs, rhs, "or");
+            return self.$error("cannot handle LHS type: " + (lhs.$type()))}, {$$arity: 0, $$s: self}).$call(lhs, rhs, "or");
           return self.$process(result);
-        }, $LogicalOperatorAssignment_on_or_asgn$7.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$on_and_asgn', $LogicalOperatorAssignment_on_and_asgn$9 = function $$on_and_asgn(node) {
-          var $a, $$10, self = this, lhs = nil, rhs = nil, result = nil;
+        $def(self, '$on_and_asgn', function $$on_and_asgn(node) {
+          var $a, self = this, lhs = nil, rhs = nil, result = nil;
 
           
-          $a = [].concat(Opal.to_a(node)), (lhs = ($a[0] == null ? nil : $a[0])), (rhs = ($a[1] == null ? nil : $a[1])), $a;
-          result = $send($$($nesting, 'HANDLERS'), 'fetch', [lhs.$type()], ($$10 = function(){var self = $$10.$$s == null ? this : $$10.$$s;
+          $a = [].concat($to_a(node)), (lhs = ($a[0] == null ? nil : $a[0])), (rhs = ($a[1] == null ? nil : $a[1])), $a;
+          result = $send($$('HANDLERS'), 'fetch', [lhs.$type()], function $$5(){var self = $$5.$$s == null ? this : $$5.$$s;
 
-            return self.$error("" + "cannot handle LHS type: " + (lhs.$type()))}, $$10.$$s = self, $$10.$$arity = 0, $$10)).$call(lhs, rhs, "and");
+            return self.$error("cannot handle LHS type: " + (lhs.$type()))}, {$$arity: 0, $$s: self}).$call(lhs, rhs, "and");
           return self.$process(result);
-        }, $LogicalOperatorAssignment_on_and_asgn$9.$$arity = 1);
-        Opal.const_set($nesting[0], 'ASSIGNMENT_STRING_NODE', self.$s("str", "assignment"));
-        return (Opal.def(self, '$on_defined?', $LogicalOperatorAssignment_on_defined$ques$11 = function(node) {
-          var $a, $iter = $LogicalOperatorAssignment_on_defined$ques$11.$$p, $yield = $iter || nil, self = this, inner = nil, _ = nil;
+        }, 1);
+        $const_set($nesting[0], 'ASSIGNMENT_STRING_NODE', self.$s("str", "assignment"));
+        return $def(self, '$on_defined?', function $LogicalOperatorAssignment_on_defined$ques$6(node) {
+          var $a, $yield = $LogicalOperatorAssignment_on_defined$ques$6.$$p || nil, self = this, inner = nil, _ = nil;
 
-          if ($iter) $LogicalOperatorAssignment_on_defined$ques$11.$$p = null;
+          delete $LogicalOperatorAssignment_on_defined$ques$6.$$p;
           
-          $a = [].concat(Opal.to_a(node)), (inner = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $a;
+          $a = [].concat($to_a(node)), (inner = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $a;
           if ($truthy(["or_asgn", "and_asgn"]['$include?'](inner.$type()))) {
-            return $$($nesting, 'ASSIGNMENT_STRING_NODE')
+            return $$('ASSIGNMENT_STRING_NODE')
           } else {
-            return $send2(self, $find_super(self, 'on_defined?', $LogicalOperatorAssignment_on_defined$ques$11, false, true), 'on_defined?', [node], null)
+            return $send2(self, $find_super(self, 'on_defined?', $LogicalOperatorAssignment_on_defined$ques$6, false, true), 'on_defined?', [node], null)
           };
-        }, $LogicalOperatorAssignment_on_defined$ques$11.$$arity = 1), nil) && 'on_defined?';
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+        }, 1);
+      })($nesting[0], $$('Base'), $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/rewriters/binary_operator_assignment"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $class_variable_set = Opal.class_variable_set, $truthy = Opal.truthy, $class_variable_get = Opal.class_variable_get, $lambda = Opal.lambda, $slice = Opal.slice, $hash2 = Opal.hash2, $send = Opal.send, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["opal/rewriters/binary_operator_assignment"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $class_variable_set = Opal.class_variable_set, $defs = Opal.defs, $truthy = Opal.truthy, $class_variable_get = Opal.class_variable_get, $rb_plus = Opal.rb_plus, $const_set = Opal.const_set, $lambda = Opal.lambda, $to_a = Opal.to_a, $slice = Opal.slice, $eqeq = Opal.eqeq, $hash2 = Opal.hash2, $send = Opal.send, $def = Opal.def, $send2 = Opal.send2, $find_super = Opal.find_super;
 
-  Opal.add_stubs(['$require', '$+', '$updated', '$s', '$[]', '$==', '$type', '$new_temp', '$freeze', '$call', '$fetch', '$error', '$process']);
+  Opal.add_stubs('require,+,updated,[],==,type,new_temp,s,freeze,call,fetch,error,process');
   
   self.$require("opal/rewriters/base");
   return (function($base, $parent_nesting) {
@@ -29301,154 +26327,129 @@ Opal.modules["opal/rewriters/binary_operator_assignment"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Rewriters');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'BinaryOperatorAssignment');
 
-        var $nesting = [self].concat($parent_nesting), $BinaryOperatorAssignment_reset_tmp_counter$excl$1, $BinaryOperatorAssignment_new_temp$2, $BinaryOperatorAssignment$3, $BinaryOperatorAssignment_on_op_asgn$7, $BinaryOperatorAssignment_on_defined$ques$9;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
         
-        Opal.defs(self, '$reset_tmp_counter!', $BinaryOperatorAssignment_reset_tmp_counter$excl$1 = function() {
-          var self = this;
-
+        $defs(self, '$reset_tmp_counter!', function $BinaryOperatorAssignment_reset_tmp_counter$excl$1() {
+          
           return $class_variable_set($nesting[0], '@@counter', 0)
-        }, $BinaryOperatorAssignment_reset_tmp_counter$excl$1.$$arity = 0);
-        Opal.defs(self, '$new_temp', $BinaryOperatorAssignment_new_temp$2 = function $$new_temp() {
-          var $a, self = this, $ret_or_1 = nil;
+        }, 0);
+        $defs(self, '$new_temp', function $$new_temp() {
+          var $a, $ret_or_1 = nil;
 
           
-          $class_variable_set($nesting[0], '@@counter', (function() {if ($truthy((($a = $nesting[0].$$cvars['@@counter'], $a != null) ? 'class variable' : nil))) {
-            
-            if ($truthy(($ret_or_1 = $class_variable_get($nesting[0], '@@counter', false)))) {
-              return $ret_or_1
-            } else {
-              return 0
-            };
-          } else {
-            return 0
-          }; return nil; })());
+          $class_variable_set($nesting[0], '@@counter', ($truthy((($a = $nesting[0].$$cvars['@@counter'], $a != null) ? 'class variable' : nil)) ? (($truthy(($ret_or_1 = $class_variable_get($nesting[0], '@@counter', false))) ? ($ret_or_1) : (0))) : (0)));
           $class_variable_set($nesting[0], '@@counter', $rb_plus($class_variable_get($nesting[0], '@@counter', false), 1));
-          return "" + "$binary_op_recvr_tmp_" + ($class_variable_get($nesting[0], '@@counter', false));
-        }, $BinaryOperatorAssignment_new_temp$2.$$arity = 0);
-        Opal.const_set($nesting[0], 'GET_SET', $lambda(($BinaryOperatorAssignment$3 = function(get_type, set_type){var self = $BinaryOperatorAssignment$3.$$s == null ? this : $BinaryOperatorAssignment$3.$$s, $$4;
-
+          return "$binary_op_recvr_tmp_" + ($class_variable_get($nesting[0], '@@counter', false));
+        }, 0);
+        $const_set($nesting[0], 'GET_SET', $lambda(function $BinaryOperatorAssignment$2(get_type, set_type){
           
           
-          if (get_type == null) {
-            get_type = nil;
-          };
+          if (get_type == null) get_type = nil;;
           
-          if (set_type == null) {
-            set_type = nil;
-          };
-          return $lambda(($$4 = function(lhs, operation, rhs){var self = $$4.$$s == null ? this : $$4.$$s, get_node = nil, set_node = nil;
+          if (set_type == null) set_type = nil;;
+          return $lambda(function $$3(node, lhs, operation, rhs){var get_node = nil, set_node = nil;
 
             
             
-            if (lhs == null) {
-              lhs = nil;
-            };
+            if (node == null) node = nil;;
             
-            if (operation == null) {
-              operation = nil;
-            };
+            if (lhs == null) lhs = nil;;
             
-            if (rhs == null) {
-              rhs = nil;
-            };
+            if (operation == null) operation = nil;;
+            
+            if (rhs == null) rhs = nil;;
             get_node = lhs.$updated(get_type);
-            set_node = self.$s("send", get_node, operation, rhs);
-            return lhs.$updated(set_type, [].concat(Opal.to_a(lhs)).concat([set_node]));}, $$4.$$s = self, $$4.$$arity = 3, $$4));}, $BinaryOperatorAssignment$3.$$s = self, $BinaryOperatorAssignment$3.$$arity = 2, $BinaryOperatorAssignment$3)));
-        Opal.const_set($nesting[0], 'LocalVariableHandler', $$($nesting, 'GET_SET')['$[]']("lvar", "lvasgn"));
-        Opal.const_set($nesting[0], 'InstanceVariableHandler', $$($nesting, 'GET_SET')['$[]']("ivar", "ivasgn"));
-        Opal.const_set($nesting[0], 'ConstantHandler', $$($nesting, 'GET_SET')['$[]']("const", "casgn"));
-        Opal.const_set($nesting[0], 'GlobalVariableHandler', $$($nesting, 'GET_SET')['$[]']("gvar", "gvasgn"));
-        Opal.const_set($nesting[0], 'ClassVariableHandler', $$($nesting, 'GET_SET')['$[]']("cvar", "cvasgn"));
-        (function($base, $super, $parent_nesting) {
+            set_node = node.$updated("send", [get_node, operation, rhs]);
+            return lhs.$updated(set_type, [].concat($to_a(lhs)).concat([set_node]));}, 4);}, 2));
+        $const_set($nesting[0], 'LocalVariableHandler', $$('GET_SET')['$[]']("lvar", "lvasgn"));
+        $const_set($nesting[0], 'InstanceVariableHandler', $$('GET_SET')['$[]']("ivar", "ivasgn"));
+        $const_set($nesting[0], 'ConstantHandler', $$('GET_SET')['$[]']("const", "casgn"));
+        $const_set($nesting[0], 'GlobalVariableHandler', $$('GET_SET')['$[]']("gvar", "gvasgn"));
+        $const_set($nesting[0], 'ClassVariableHandler', $$('GET_SET')['$[]']("cvar", "cvasgn"));
+        (function($base, $super) {
           var self = $klass($base, $super, 'SendHandler');
 
-          var $nesting = [self].concat($parent_nesting), $SendHandler_call$5;
-
-          return (Opal.defs(self, '$call', $SendHandler_call$5 = function $$call(lhs, operation, rhs) {
-            var $a, self = this, recvr = nil, reader_method = nil, args = nil, $ret_or_2 = nil, recvr_tmp = nil, cache_recvr = nil, writer_method = nil, call_reader = nil, call_op = nil, call_writer = nil;
+          
+          return $defs(self, '$call', function $$call(node, lhs, operation, rhs) {
+            var $a, self = this, recvr = nil, reader_method = nil, args = nil, recvr_tmp = nil, cache_recvr = nil, writer_method = nil, call_reader = nil, call_op = nil, call_writer = nil;
 
             
-            $a = [].concat(Opal.to_a(lhs)), (recvr = ($a[0] == null ? nil : $a[0])), (reader_method = ($a[1] == null ? nil : $a[1])), (args = $slice.call($a, 2)), $a;
-            if ($truthy((function() {if ($truthy(($ret_or_2 = recvr))) {
-              return recvr.$type()['$==']("send")
-            } else {
-              return $ret_or_2
-            }; return nil; })())) {
+            $a = [].concat($to_a(lhs)), (recvr = ($a[0] == null ? nil : $a[0])), (reader_method = ($a[1] == null ? nil : $a[1])), (args = $slice.call($a, 2)), $a;
+            if (($truthy(recvr) && ($eqeq(recvr.$type(), "send")))) {
               
               recvr_tmp = self.$new_temp();
               cache_recvr = self.$s("lvasgn", recvr_tmp, recvr);
-              recvr = self.$s("js_tmp", recvr_tmp);};
+              recvr = self.$s("js_tmp", recvr_tmp);
+            };
             writer_method = "" + (reader_method) + "=";
-            call_reader = lhs.$updated("send", [recvr, reader_method].concat(Opal.to_a(args)));
-            call_op = self.$s("send", call_reader, operation, rhs);
-            call_writer = lhs.$updated("send", [recvr, writer_method].concat(Opal.to_a(args)).concat([call_op]));
+            call_reader = lhs.$updated("send", [recvr, reader_method].concat($to_a(args)));
+            call_op = node.$updated("send", [call_reader, operation, rhs]);
+            call_writer = lhs.$updated("send", [recvr, writer_method].concat($to_a(args)).concat([call_op]));
             if ($truthy(cache_recvr)) {
-              return self.$s("begin", cache_recvr, call_writer)
+              return node.$updated("begin", [cache_recvr, call_writer])
             } else {
               return call_writer
             };
-          }, $SendHandler_call$5.$$arity = 3), nil) && 'call'
-        })($nesting[0], self, $nesting);
-        (function($base, $super, $parent_nesting) {
+          }, 4)
+        })($nesting[0], self);
+        (function($base, $super) {
           var self = $klass($base, $super, 'ConditionalSendHandler');
 
-          var $nesting = [self].concat($parent_nesting), $ConditionalSendHandler_call$6;
-
-          return (Opal.defs(self, '$call', $ConditionalSendHandler_call$6 = function $$call(lhs, operation, rhs) {
+          
+          return $defs(self, '$call', function $$call(node, lhs, operation, rhs) {
             var $a, self = this, recvr = nil, meth = nil, args = nil, recvr_tmp = nil, cache_recvr = nil, recvr_is_nil = nil, plain_send = nil, plain_op_asgn = nil;
 
             
-            $a = [].concat(Opal.to_a(lhs)), (recvr = ($a[0] == null ? nil : $a[0])), (meth = ($a[1] == null ? nil : $a[1])), (args = $slice.call($a, 2)), $a;
+            $a = [].concat($to_a(lhs)), (recvr = ($a[0] == null ? nil : $a[0])), (meth = ($a[1] == null ? nil : $a[1])), (args = $slice.call($a, 2)), $a;
             recvr_tmp = self.$new_temp();
             cache_recvr = self.$s("lvasgn", recvr_tmp, recvr);
             recvr = self.$s("js_tmp", recvr_tmp);
             recvr_is_nil = self.$s("send", recvr, "nil?");
-            plain_send = lhs.$updated("send", [recvr, meth].concat(Opal.to_a(args)));
-            plain_op_asgn = self.$s("op_asgn", plain_send, operation, rhs);
+            plain_send = lhs.$updated("send", [recvr, meth].concat($to_a(args)));
+            plain_op_asgn = node.$updated("op_asgn", [plain_send, operation, rhs]);
             return self.$s("begin", cache_recvr, self.$s("if", recvr_is_nil, self.$s("nil"), plain_op_asgn));
-          }, $ConditionalSendHandler_call$6.$$arity = 3), nil) && 'call'
-        })($nesting[0], self, $nesting);
-        Opal.const_set($nesting[0], 'HANDLERS', $hash2(["lvasgn", "ivasgn", "casgn", "gvasgn", "cvasgn", "send", "csend"], {"lvasgn": $$($nesting, 'LocalVariableHandler'), "ivasgn": $$($nesting, 'InstanceVariableHandler'), "casgn": $$($nesting, 'ConstantHandler'), "gvasgn": $$($nesting, 'GlobalVariableHandler'), "cvasgn": $$($nesting, 'ClassVariableHandler'), "send": $$($nesting, 'SendHandler'), "csend": $$($nesting, 'ConditionalSendHandler')}).$freeze());
+          }, 4)
+        })($nesting[0], self);
+        $const_set($nesting[0], 'HANDLERS', $hash2(["lvasgn", "ivasgn", "casgn", "gvasgn", "cvasgn", "send", "csend"], {"lvasgn": $$('LocalVariableHandler'), "ivasgn": $$('InstanceVariableHandler'), "casgn": $$('ConstantHandler'), "gvasgn": $$('GlobalVariableHandler'), "cvasgn": $$('ClassVariableHandler'), "send": $$('SendHandler'), "csend": $$('ConditionalSendHandler')}).$freeze());
         
-        Opal.def(self, '$on_op_asgn', $BinaryOperatorAssignment_on_op_asgn$7 = function $$on_op_asgn(node) {
-          var $a, $$8, self = this, lhs = nil, op = nil, rhs = nil, result = nil;
+        $def(self, '$on_op_asgn', function $$on_op_asgn(node) {
+          var $a, self = this, lhs = nil, op = nil, rhs = nil, result = nil;
 
           
-          $a = [].concat(Opal.to_a(node)), (lhs = ($a[0] == null ? nil : $a[0])), (op = ($a[1] == null ? nil : $a[1])), (rhs = ($a[2] == null ? nil : $a[2])), $a;
-          result = $send($$($nesting, 'HANDLERS'), 'fetch', [lhs.$type()], ($$8 = function(){var self = $$8.$$s == null ? this : $$8.$$s;
+          $a = [].concat($to_a(node)), (lhs = ($a[0] == null ? nil : $a[0])), (op = ($a[1] == null ? nil : $a[1])), (rhs = ($a[2] == null ? nil : $a[2])), $a;
+          result = $send($$('HANDLERS'), 'fetch', [lhs.$type()], function $$4(){var self = $$4.$$s == null ? this : $$4.$$s;
 
-            return self.$error("" + "cannot handle LHS type: " + (lhs.$type()))}, $$8.$$s = self, $$8.$$arity = 0, $$8)).$call(lhs, op, rhs);
+            return self.$error("cannot handle LHS type: " + (lhs.$type()))}, {$$arity: 0, $$s: self}).$call(node, lhs, op, rhs);
           return self.$process(result);
-        }, $BinaryOperatorAssignment_on_op_asgn$7.$$arity = 1);
-        Opal.const_set($nesting[0], 'ASSIGNMENT_STRING_NODE', self.$s("str", "assignment"));
-        return (Opal.def(self, '$on_defined?', $BinaryOperatorAssignment_on_defined$ques$9 = function(node) {
-          var $a, $iter = $BinaryOperatorAssignment_on_defined$ques$9.$$p, $yield = $iter || nil, self = this, inner = nil, _ = nil;
+        }, 1);
+        $const_set($nesting[0], 'ASSIGNMENT_STRING_NODE', self.$s("str", "assignment"));
+        return $def(self, '$on_defined?', function $BinaryOperatorAssignment_on_defined$ques$5(node) {
+          var $a, $yield = $BinaryOperatorAssignment_on_defined$ques$5.$$p || nil, self = this, inner = nil, _ = nil;
 
-          if ($iter) $BinaryOperatorAssignment_on_defined$ques$9.$$p = null;
+          delete $BinaryOperatorAssignment_on_defined$ques$5.$$p;
           
-          $a = [].concat(Opal.to_a(node)), (inner = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $a;
-          if (inner.$type()['$==']("op_asgn")) {
-            return $$($nesting, 'ASSIGNMENT_STRING_NODE')
+          $a = [].concat($to_a(node)), (inner = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $a;
+          if ($eqeq(inner.$type(), "op_asgn")) {
+            return $$('ASSIGNMENT_STRING_NODE')
           } else {
-            return $send2(self, $find_super(self, 'on_defined?', $BinaryOperatorAssignment_on_defined$ques$9, false, true), 'on_defined?', [node], null)
+            return $send2(self, $find_super(self, 'on_defined?', $BinaryOperatorAssignment_on_defined$ques$5, false, true), 'on_defined?', [node], null)
           };
-        }, $BinaryOperatorAssignment_on_defined$ques$9.$$arity = 1), nil) && 'on_defined?';
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+        }, 1);
+      })($nesting[0], $$('Base'), $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/rewriters/hashes/key_duplicates_rewriter"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $truthy = Opal.truthy;
+Opal.modules["opal/rewriters/hashes/key_duplicates_rewriter"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $def = Opal.def, $send2 = Opal.send2, $find_super = Opal.find_super, $to_a = Opal.to_a, $truthy = Opal.truthy, $eqeq = Opal.eqeq, $Opal = Opal.Opal;
 
-  Opal.add_stubs(['$require', '$new', '$include?', '$type', '$<<', '$==', '$process_regular_node', '$updated', '$inspect', '$warn']);
+  Opal.add_stubs('require,new,include?,type,<<,==,process_regular_node,updated,inspect,warn');
   
   self.$require("opal/rewriters/base");
   self.$require("set");
@@ -29470,91 +26471,88 @@ Opal.modules["opal/rewriters/hashes/key_duplicates_rewriter"] = function(Opal) {
         return (function($base, $super, $parent_nesting) {
           var self = $klass($base, $super, 'KeyDuplicatesRewriter');
 
-          var $nesting = [self].concat($parent_nesting), $KeyDuplicatesRewriter_initialize$1, $KeyDuplicatesRewriter_on_hash$2, $KeyDuplicatesRewriter_on_pair$3, $KeyDuplicatesRewriter_on_kwsplat$4;
+          var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-          self.$$prototype.keys = nil;
+          $proto.keys = nil;
           
           
-          Opal.def(self, '$initialize', $KeyDuplicatesRewriter_initialize$1 = function $$initialize() {
+          $def(self, '$initialize', function $$initialize() {
             var self = this;
 
-            return (self.keys = $$($nesting, 'UniqKeysSet').$new())
-          }, $KeyDuplicatesRewriter_initialize$1.$$arity = 0);
+            return (self.keys = $$('UniqKeysSet').$new())
+          }, 0);
           
-          Opal.def(self, '$on_hash', $KeyDuplicatesRewriter_on_hash$2 = function $$on_hash(node) {
-            var $a, $iter = $KeyDuplicatesRewriter_on_hash$2.$$p, $yield = $iter || nil, self = this, previous_keys = nil;
+          $def(self, '$on_hash', function $$on_hash(node) {
+            var $a, $yield = $$on_hash.$$p || nil, self = this, previous_keys = nil;
 
-            if ($iter) $KeyDuplicatesRewriter_on_hash$2.$$p = null;
+            delete $$on_hash.$$p;
             return (function() { try {
             
-            $a = [self.keys, $$($nesting, 'UniqKeysSet').$new()], (previous_keys = $a[0]), (self.keys = $a[1]), $a;
-            return $send2(self, $find_super(self, 'on_hash', $KeyDuplicatesRewriter_on_hash$2, false, true), 'on_hash', [node], null);
+            $a = [self.keys, $$('UniqKeysSet').$new()], (previous_keys = $a[0]), (self.keys = $a[1]), $a;
+            return $send2(self, $find_super(self, 'on_hash', $$on_hash, false, true), 'on_hash', [node], null);
             } finally {
               (self.keys = previous_keys)
             }; })()
-          }, $KeyDuplicatesRewriter_on_hash$2.$$arity = 1);
+          }, 1);
           
-          Opal.def(self, '$on_pair', $KeyDuplicatesRewriter_on_pair$3 = function $$on_pair(node) {
-            var $a, $iter = $KeyDuplicatesRewriter_on_pair$3.$$p, $yield = $iter || nil, self = this, key = nil, _value = nil;
+          $def(self, '$on_pair', function $$on_pair(node) {
+            var $a, $yield = $$on_pair.$$p || nil, self = this, key = nil, _value = nil;
 
-            if ($iter) $KeyDuplicatesRewriter_on_pair$3.$$p = null;
+            delete $$on_pair.$$p;
             
-            $a = [].concat(Opal.to_a(node)), (key = ($a[0] == null ? nil : $a[0])), (_value = ($a[1] == null ? nil : $a[1])), $a;
+            $a = [].concat($to_a(node)), (key = ($a[0] == null ? nil : $a[0])), (_value = ($a[1] == null ? nil : $a[1])), $a;
             if ($truthy(["str", "sym"]['$include?'](key.$type()))) {
-              self.keys['$<<'](key)};
-            return $send2(self, $find_super(self, 'on_pair', $KeyDuplicatesRewriter_on_pair$3, false, true), 'on_pair', [node], null);
-          }, $KeyDuplicatesRewriter_on_pair$3.$$arity = 1);
+              self.keys['$<<'](key)
+            };
+            return $send2(self, $find_super(self, 'on_pair', $$on_pair, false, true), 'on_pair', [node], null);
+          }, 1);
           
-          Opal.def(self, '$on_kwsplat', $KeyDuplicatesRewriter_on_kwsplat$4 = function $$on_kwsplat(node) {
+          $def(self, '$on_kwsplat', function $$on_kwsplat(node) {
             var $a, self = this, hash = nil, _ = nil;
 
             
-            $a = [].concat(Opal.to_a(node)), (hash = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $a;
-            if (hash.$type()['$==']("hash")) {
-              hash = self.$process_regular_node(hash)};
+            $a = [].concat($to_a(node)), (hash = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $a;
+            if ($eqeq(hash.$type(), "hash")) {
+              hash = self.$process_regular_node(hash)
+            };
             return node.$updated(nil, [hash]);
-          }, $KeyDuplicatesRewriter_on_kwsplat$4.$$arity = 1);
+          }, 1);
           return (function($base, $super, $parent_nesting) {
             var self = $klass($base, $super, 'UniqKeysSet');
 
-            var $nesting = [self].concat($parent_nesting), $UniqKeysSet_initialize$5, $UniqKeysSet_$lt$lt$6;
+            var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-            self.$$prototype.set = nil;
+            $proto.set = nil;
             
             
-            Opal.def(self, '$initialize', $UniqKeysSet_initialize$5 = function $$initialize() {
+            $def(self, '$initialize', function $$initialize() {
               var self = this;
 
-              return (self.set = $$($nesting, 'Set').$new())
-            }, $UniqKeysSet_initialize$5.$$arity = 0);
-            return (Opal.def(self, '$<<', $UniqKeysSet_$lt$lt$6 = function(element) {
+              return (self.set = $$('Set').$new())
+            }, 0);
+            return $def(self, '$<<', function $UniqKeysSet_$lt$lt$1(element) {
               var $a, self = this, key = nil, _ = nil;
 
               if ($truthy(self.set['$include?'](element))) {
                 
-                $a = [].concat(Opal.to_a(element)), (key = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $a;
-                key = (function() {if (element.$type()['$==']("str")) {
-                  return key.$inspect()
-                } else {
-                  return "" + ":" + (key)
-                }; return nil; })();
-                return $$($nesting, 'Kernel').$warn("" + "warning: key " + (key) + " is duplicated and overwritten");
+                $a = [].concat($to_a(element)), (key = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $a;
+                key = ($eqeq(element.$type(), "str") ? (key.$inspect()) : (":" + (key)));
+                return $$('Kernel').$warn("warning: key " + (key) + " is duplicated and overwritten");
               } else {
                 return self.set['$<<'](element)
               }
-            }, $UniqKeysSet_$lt$lt$6.$$arity = 1), nil) && '<<';
+            }, 1);
           })($nesting[0], null, $nesting);
-        })($nesting[0], $$$($$$($$$('::', 'Opal'), 'Rewriters'), 'Base'), $nesting)
+        })($nesting[0], $$$($$$($Opal, 'Rewriters'), 'Base'), $nesting)
       })($nesting[0], $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/rewriters/dump_args"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $hash2 = Opal.hash2;
+Opal.modules["opal/rewriters/dump_args"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $to_a = Opal.to_a, $hash2 = Opal.hash2, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$updated']);
+  Opal.add_stubs('require,updated');
   
   self.$require("opal/rewriters/base");
   return (function($base, $parent_nesting) {
@@ -29565,56 +26563,51 @@ Opal.modules["opal/rewriters/dump_args"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Rewriters');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'DumpArgs');
 
-        var $nesting = [self].concat($parent_nesting), $DumpArgs_on_def$1, $DumpArgs_on_defs$2, $DumpArgs_on_iter$3;
-
         
         
-        Opal.def(self, '$on_def', $DumpArgs_on_def$1 = function $$on_def(node) {
-          var $a, $iter = $DumpArgs_on_def$1.$$p, $yield = $iter || nil, self = this, _mid = nil, args = nil, _body = nil;
+        
+        $def(self, '$on_def', function $$on_def(node) {
+          var $a, $yield = $$on_def.$$p || nil, self = this, _mid = nil, args = nil, _body = nil;
 
-          if ($iter) $DumpArgs_on_def$1.$$p = null;
+          delete $$on_def.$$p;
           
-          node = $send2(self, $find_super(self, 'on_def', $DumpArgs_on_def$1, false, true), 'on_def', [node], null);
-          $a = [].concat(Opal.to_a(node)), (_mid = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (_body = ($a[2] == null ? nil : $a[2])), $a;
+          node = $send2(self, $find_super(self, 'on_def', $$on_def, false, true), 'on_def', [node], null);
+          $a = [].concat($to_a(node)), (_mid = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (_body = ($a[2] == null ? nil : $a[2])), $a;
           return node.$updated(nil, nil, $hash2(["meta"], {"meta": $hash2(["original_args"], {"original_args": args})}));
-        }, $DumpArgs_on_def$1.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$on_defs', $DumpArgs_on_defs$2 = function $$on_defs(node) {
-          var $a, $iter = $DumpArgs_on_defs$2.$$p, $yield = $iter || nil, self = this, _recv = nil, _mid = nil, args = nil, _body = nil;
+        $def(self, '$on_defs', function $$on_defs(node) {
+          var $a, $yield = $$on_defs.$$p || nil, self = this, _recv = nil, _mid = nil, args = nil, _body = nil;
 
-          if ($iter) $DumpArgs_on_defs$2.$$p = null;
+          delete $$on_defs.$$p;
           
-          node = $send2(self, $find_super(self, 'on_defs', $DumpArgs_on_defs$2, false, true), 'on_defs', [node], null);
-          $a = [].concat(Opal.to_a(node)), (_recv = ($a[0] == null ? nil : $a[0])), (_mid = ($a[1] == null ? nil : $a[1])), (args = ($a[2] == null ? nil : $a[2])), (_body = ($a[3] == null ? nil : $a[3])), $a;
+          node = $send2(self, $find_super(self, 'on_defs', $$on_defs, false, true), 'on_defs', [node], null);
+          $a = [].concat($to_a(node)), (_recv = ($a[0] == null ? nil : $a[0])), (_mid = ($a[1] == null ? nil : $a[1])), (args = ($a[2] == null ? nil : $a[2])), (_body = ($a[3] == null ? nil : $a[3])), $a;
           return node.$updated(nil, nil, $hash2(["meta"], {"meta": $hash2(["original_args"], {"original_args": args})}));
-        }, $DumpArgs_on_defs$2.$$arity = 1);
-        return (Opal.def(self, '$on_iter', $DumpArgs_on_iter$3 = function $$on_iter(node) {
-          var $a, $iter = $DumpArgs_on_iter$3.$$p, $yield = $iter || nil, self = this, args = nil, _body = nil;
+        }, 1);
+        return $def(self, '$on_iter', function $$on_iter(node) {
+          var $a, $yield = $$on_iter.$$p || nil, self = this, args = nil, _body = nil;
 
-          if ($iter) $DumpArgs_on_iter$3.$$p = null;
+          delete $$on_iter.$$p;
           
-          node = $send2(self, $find_super(self, 'on_iter', $DumpArgs_on_iter$3, false, true), 'on_iter', [node], null);
-          $a = [].concat(Opal.to_a(node)), (args = ($a[0] == null ? nil : $a[0])), (_body = ($a[1] == null ? nil : $a[1])), $a;
+          node = $send2(self, $find_super(self, 'on_iter', $$on_iter, false, true), 'on_iter', [node], null);
+          $a = [].concat($to_a(node)), (args = ($a[0] == null ? nil : $a[0])), (_body = ($a[1] == null ? nil : $a[1])), $a;
           return node.$updated(nil, nil, $hash2(["meta"], {"meta": $hash2(["original_args"], {"original_args": args})}));
-        }, $DumpArgs_on_iter$3.$$arity = 1), nil) && 'on_iter';
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+        }, 1);
+      })($nesting[0], $$('Base'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/rewriters/mlhs_args"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $truthy = Opal.truthy, $send = Opal.send, $hash2 = Opal.hash2;
+Opal.modules["opal/rewriters/mlhs_args"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $to_a = Opal.to_a, $truthy = Opal.truthy, $def = Opal.def, $rb_plus = Opal.rb_plus, $send = Opal.send, $eqeq = Opal.eqeq, $hash2 = Opal.hash2;
 
-  Opal.add_stubs(['$require', '$new', '$updated', '$rewritten', '$initialization', '$s', '$prepend_to_body', '$attr_reader', '$split!', '$+', '$each', '$children', '$==', '$type', '$new_mlhs_tmp', '$process', '$<<', '$length', '$[]', '$empty?']);
+  Opal.add_stubs('require,new,updated,rewritten,initialization,s,prepend_to_body,attr_reader,split!,+,each,children,==,type,new_mlhs_tmp,process,<<,length,[],empty?');
   
   self.$require("opal/rewriters/base");
   return (function($base, $parent_nesting) {
@@ -29625,127 +26618,112 @@ Opal.modules["opal/rewriters/mlhs_args"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Rewriters');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'MlhsArgs');
 
-        var $nesting = [self].concat($parent_nesting), $MlhsArgs_on_def$1, $MlhsArgs_on_defs$2, $MlhsArgs_on_iter$3;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
         
         
-        Opal.def(self, '$on_def', $MlhsArgs_on_def$1 = function $$on_def(node) {
-          var $a, $iter = $MlhsArgs_on_def$1.$$p, $yield = $iter || nil, self = this, mid = nil, args = nil, body = nil, arguments$ = nil, $ret_or_1 = nil;
+        $def(self, '$on_def', function $$on_def(node) {
+          var $a, $yield = $$on_def.$$p || nil, self = this, mid = nil, args = nil, body = nil, arguments$ = nil, $ret_or_1 = nil;
 
-          if ($iter) $MlhsArgs_on_def$1.$$p = null;
+          delete $$on_def.$$p;
           
-          node = $send2(self, $find_super(self, 'on_def', $MlhsArgs_on_def$1, false, true), 'on_def', [node], null);
-          $a = [].concat(Opal.to_a(node)), (mid = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), $a;
-          arguments$ = $$($nesting, 'Arguments').$new(args);
+          node = $send2(self, $find_super(self, 'on_def', $$on_def, false, true), 'on_def', [node], null);
+          $a = [].concat($to_a(node)), (mid = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), $a;
+          arguments$ = $$('Arguments').$new(args);
           args = args.$updated(nil, arguments$.$rewritten());
           if ($truthy(arguments$.$initialization())) {
             
-            body = (function() {if ($truthy(($ret_or_1 = body))) {
-              return $ret_or_1
-            } else {
-              return self.$s("nil")
-            }; return nil; })();
-            body = self.$prepend_to_body(body, arguments$.$initialization());};
+            body = ($truthy(($ret_or_1 = body)) ? ($ret_or_1) : (self.$s("nil")));
+            body = self.$prepend_to_body(body, arguments$.$initialization());
+          };
           return node.$updated(nil, [mid, args, body]);
-        }, $MlhsArgs_on_def$1.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$on_defs', $MlhsArgs_on_defs$2 = function $$on_defs(node) {
-          var $a, $iter = $MlhsArgs_on_defs$2.$$p, $yield = $iter || nil, self = this, recv = nil, mid = nil, args = nil, body = nil, arguments$ = nil, $ret_or_2 = nil;
+        $def(self, '$on_defs', function $$on_defs(node) {
+          var $a, $yield = $$on_defs.$$p || nil, self = this, recv = nil, mid = nil, args = nil, body = nil, arguments$ = nil, $ret_or_1 = nil;
 
-          if ($iter) $MlhsArgs_on_defs$2.$$p = null;
+          delete $$on_defs.$$p;
           
-          node = $send2(self, $find_super(self, 'on_defs', $MlhsArgs_on_defs$2, false, true), 'on_defs', [node], null);
-          $a = [].concat(Opal.to_a(node)), (recv = ($a[0] == null ? nil : $a[0])), (mid = ($a[1] == null ? nil : $a[1])), (args = ($a[2] == null ? nil : $a[2])), (body = ($a[3] == null ? nil : $a[3])), $a;
-          arguments$ = $$($nesting, 'Arguments').$new(args);
+          node = $send2(self, $find_super(self, 'on_defs', $$on_defs, false, true), 'on_defs', [node], null);
+          $a = [].concat($to_a(node)), (recv = ($a[0] == null ? nil : $a[0])), (mid = ($a[1] == null ? nil : $a[1])), (args = ($a[2] == null ? nil : $a[2])), (body = ($a[3] == null ? nil : $a[3])), $a;
+          arguments$ = $$('Arguments').$new(args);
           args = args.$updated(nil, arguments$.$rewritten());
           if ($truthy(arguments$.$initialization())) {
             
-            body = (function() {if ($truthy(($ret_or_2 = body))) {
-              return $ret_or_2
-            } else {
-              return self.$s("nil")
-            }; return nil; })();
-            body = self.$prepend_to_body(body, arguments$.$initialization());};
+            body = ($truthy(($ret_or_1 = body)) ? ($ret_or_1) : (self.$s("nil")));
+            body = self.$prepend_to_body(body, arguments$.$initialization());
+          };
           return node.$updated(nil, [recv, mid, args, body]);
-        }, $MlhsArgs_on_defs$2.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$on_iter', $MlhsArgs_on_iter$3 = function $$on_iter(node) {
-          var $a, $iter = $MlhsArgs_on_iter$3.$$p, $yield = $iter || nil, self = this, args = nil, body = nil, arguments$ = nil, $ret_or_3 = nil;
+        $def(self, '$on_iter', function $$on_iter(node) {
+          var $a, $yield = $$on_iter.$$p || nil, self = this, args = nil, body = nil, arguments$ = nil, $ret_or_1 = nil;
 
-          if ($iter) $MlhsArgs_on_iter$3.$$p = null;
+          delete $$on_iter.$$p;
           
-          node = $send2(self, $find_super(self, 'on_iter', $MlhsArgs_on_iter$3, false, true), 'on_iter', [node], null);
-          $a = [].concat(Opal.to_a(node)), (args = ($a[0] == null ? nil : $a[0])), (body = ($a[1] == null ? nil : $a[1])), $a;
-          arguments$ = $$($nesting, 'Arguments').$new(args);
+          node = $send2(self, $find_super(self, 'on_iter', $$on_iter, false, true), 'on_iter', [node], null);
+          $a = [].concat($to_a(node)), (args = ($a[0] == null ? nil : $a[0])), (body = ($a[1] == null ? nil : $a[1])), $a;
+          arguments$ = $$('Arguments').$new(args);
           args = args.$updated(nil, arguments$.$rewritten());
           if ($truthy(arguments$.$initialization())) {
             
-            body = (function() {if ($truthy(($ret_or_3 = body))) {
-              return $ret_or_3
-            } else {
-              return self.$s("nil")
-            }; return nil; })();
-            body = self.$prepend_to_body(body, arguments$.$initialization());};
+            body = ($truthy(($ret_or_1 = body)) ? ($ret_or_1) : (self.$s("nil")));
+            body = self.$prepend_to_body(body, arguments$.$initialization());
+          };
           return node.$updated(nil, [args, body]);
-        }, $MlhsArgs_on_iter$3.$$arity = 1);
+        }, 1);
         (function($base, $super, $parent_nesting) {
           var self = $klass($base, $super, 'Arguments');
 
-          var $nesting = [self].concat($parent_nesting), $Arguments_initialize$4, $Arguments_reset_tmp_counter$excl$5, $Arguments_new_mlhs_tmp$6, $Arguments_split$excl$7;
+          var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-          self.$$prototype.counter = self.$$prototype.args = self.$$prototype.initialization = nil;
+          $proto.counter = $proto.args = $proto.initialization = nil;
           
           self.$attr_reader("rewritten", "initialization");
           
-          Opal.def(self, '$initialize', $Arguments_initialize$4 = function $$initialize(args) {
+          $def(self, '$initialize', function $$initialize(args) {
             var self = this;
 
             
             self.args = args;
             self.rewritten = [];
             self.initialization = [];
-            self.rewriter = $$($nesting, 'MlhsRewriter').$new();
+            self.rewriter = $$('MlhsRewriter').$new();
             return self['$split!']();
-          }, $Arguments_initialize$4.$$arity = 1);
+          }, 1);
           
-          Opal.def(self, '$reset_tmp_counter!', $Arguments_reset_tmp_counter$excl$5 = function() {
+          $def(self, '$reset_tmp_counter!', function $Arguments_reset_tmp_counter$excl$1() {
             var self = this;
 
             return (self.counter = 0)
-          }, $Arguments_reset_tmp_counter$excl$5.$$arity = 0);
+          }, 0);
           
-          Opal.def(self, '$new_mlhs_tmp', $Arguments_new_mlhs_tmp$6 = function $$new_mlhs_tmp() {
-            var self = this, $ret_or_4 = nil;
+          $def(self, '$new_mlhs_tmp', function $$new_mlhs_tmp() {
+            var self = this, $ret_or_1 = nil;
 
             
-            self.counter = (function() {if ($truthy(($ret_or_4 = self.counter))) {
-              return $ret_or_4
-            } else {
-              return 0
-            }; return nil; })();
+            self.counter = ($truthy(($ret_or_1 = self.counter)) ? ($ret_or_1) : (0));
             self.counter = $rb_plus(self.counter, 1);
-            return "" + "$mlhs_tmp" + (self.counter);
-          }, $Arguments_new_mlhs_tmp$6.$$arity = 0);
-          return (Opal.def(self, '$split!', $Arguments_split$excl$7 = function() {
-            var $$8, self = this;
+            return "$mlhs_tmp" + (self.counter);
+          }, 0);
+          return $def(self, '$split!', function $Arguments_split$excl$2() {
+            var self = this;
 
             
-            $send(self.args.$children(), 'each', [], ($$8 = function(arg){var self = $$8.$$s == null ? this : $$8.$$s, var_name = nil, rhs = nil, mlhs = nil;
+            $send(self.args.$children(), 'each', [], function $$3(arg){var self = $$3.$$s == null ? this : $$3.$$s, var_name = nil, rhs = nil, mlhs = nil;
               if (self.rewriter == null) self.rewriter = nil;
               if (self.initialization == null) self.initialization = nil;
               if (self.rewritten == null) self.rewritten = nil;
 
               
               
-              if (arg == null) {
-                arg = nil;
-              };
-              if (arg.$type()['$==']("mlhs")) {
+              if (arg == null) arg = nil;;
+              if ($eqeq(arg.$type(), "mlhs")) {
                 
                 var_name = self.$new_mlhs_tmp();
                 rhs = self.$s("lvar", var_name);
@@ -29754,29 +26732,27 @@ Opal.modules["opal/rewriters/mlhs_args"] = function(Opal) {
                 return self.rewritten['$<<'](self.$s("arg", var_name).$updated(nil, nil, $hash2(["meta"], {"meta": $hash2(["arg_name"], {"arg_name": var_name})})));
               } else {
                 return self.rewritten['$<<'](arg)
-              };}, $$8.$$s = self, $$8.$$arity = 1, $$8));
-            if (self.initialization.$length()['$=='](1)) {
+              };}, {$$arity: 1, $$s: self});
+            if ($eqeq(self.initialization.$length(), 1)) {
               return (self.initialization = self.initialization['$[]'](0))
             } else if ($truthy(self.initialization['$empty?']())) {
               return (self.initialization = nil)
             } else {
-              return (self.initialization = $send(self, 's', ["begin"].concat(Opal.to_a(self.initialization))))
+              return (self.initialization = $send(self, 's', ["begin"].concat($to_a(self.initialization))))
             };
-          }, $Arguments_split$excl$7.$$arity = 0), nil) && 'split!';
-        })($nesting[0], $$($nesting, 'Base'), $nesting);
-        return (function($base, $super, $parent_nesting) {
+          }, 0);
+        })($nesting[0], $$('Base'), $nesting);
+        return (function($base, $super) {
           var self = $klass($base, $super, 'MlhsRewriter');
 
-          var $nesting = [self].concat($parent_nesting), $MlhsRewriter_on_arg$9, $MlhsRewriter_on_restarg$10;
-
           
           
-          Opal.def(self, '$on_arg', $MlhsRewriter_on_arg$9 = function $$on_arg(node) {
-            var self = this;
-
+          
+          $def(self, '$on_arg', function $$on_arg(node) {
+            
             return node.$updated("lvasgn")
-          }, $MlhsRewriter_on_arg$9.$$arity = 1);
-          return (Opal.def(self, '$on_restarg', $MlhsRewriter_on_restarg$10 = function $$on_restarg(node) {
+          }, 1);
+          return $def(self, '$on_restarg', function $$on_restarg(node) {
             var self = this, name = nil;
 
             
@@ -29786,18 +26762,17 @@ Opal.modules["opal/rewriters/mlhs_args"] = function(Opal) {
             } else {
               return self.$s("splat")
             };
-          }, $MlhsRewriter_on_restarg$10.$$arity = 1), nil) && 'on_restarg';
-        })($nesting[0], $$($nesting, 'Base'), $nesting);
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+          }, 1);
+        })($nesting[0], $$('Base'));
+      })($nesting[0], $$('Base'), $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/rewriters/arguments"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy;
+Opal.modules["opal/rewriters/arguments"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $eqeqeq = Opal.eqeqeq, $truthy = Opal.truthy, $def = Opal.def;
 
-  Opal.add_stubs(['$attr_reader', '$each', '$type', '$===', '$<<', '$any?', '$raise', '$!', '$nil?', '$has_any_kwargs?', '$can_inline_kwargs?', '$empty?']);
+  Opal.add_stubs('attr_reader,each,===,type,<<,any?,raise,!,nil?,has_any_kwargs?,can_inline_kwargs?,empty?');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Opal');
 
@@ -29808,17 +26783,17 @@ Opal.modules["opal/rewriters/arguments"] = function(Opal) {
 
       var $nesting = [self].concat($parent_nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'Arguments');
 
-        var $nesting = [self].concat($parent_nesting), $Arguments_initialize$1, $Arguments_has_post_args$ques$3, $Arguments_has_any_kwargs$ques$4, $Arguments_can_inline_kwargs$ques$5;
+        var $proto = self.$$prototype;
 
-        self.$$prototype.restarg = self.$$prototype.postargs = self.$$prototype.kwargs = self.$$prototype.kwoptargs = self.$$prototype.kwrestarg = self.$$prototype.optargs = nil;
+        $proto.restarg = $proto.postargs = $proto.kwargs = $proto.kwoptargs = $proto.kwrestarg = $proto.optargs = nil;
         
         self.$attr_reader("args", "optargs", "restarg", "postargs", "kwargs", "kwoptargs", "kwrestarg", "kwnilarg", "shadowargs", "blockarg");
         
-        Opal.def(self, '$initialize', $Arguments_initialize$1 = function $$initialize(args) {
-          var $$2, self = this;
+        $def(self, '$initialize', function $$initialize(args) {
+          var self = this;
 
           
           self.args = [];
@@ -29831,9 +26806,9 @@ Opal.modules["opal/rewriters/arguments"] = function(Opal) {
           self.kwnilarg = false;
           self.shadowargs = [];
           self.blockarg = nil;
-          return $send(args, 'each', [], ($$2 = function(arg){var self = $$2.$$s == null ? this : $$2.$$s, $case = nil, $ret_or_1 = nil;
-            if (self.restarg == null) self.restarg = nil;
+          return $send(args, 'each', [], function $$1(arg){var self = $$1.$$s == null ? this : $$1.$$s, $ret_or_1 = nil;
             if (self.optargs == null) self.optargs = nil;
+            if (self.restarg == null) self.restarg = nil;
             if (self.postargs == null) self.postargs = nil;
             if (self.args == null) self.args = nil;
             if (self.kwargs == null) self.kwargs = nil;
@@ -29842,85 +26817,72 @@ Opal.modules["opal/rewriters/arguments"] = function(Opal) {
 
             
             
-            if (arg == null) {
-              arg = nil;
-            };
-            return (function() {$case = arg.$type();
-            if ("arg"['$===']($case) || "mlhs"['$===']($case)) {return (function() {if ($truthy((function() {if ($truthy(($ret_or_1 = self.restarg))) {
-              return $ret_or_1
-            } else {
-              return self.optargs['$any?']()
-            }; return nil; })())) {
-              return self.postargs
-            } else {
-              return self.args
-            }; return nil; })()['$<<'](arg)}
-            else if ("optarg"['$===']($case)) {return self.optargs['$<<'](arg)}
-            else if ("restarg"['$===']($case)) {return (self.restarg = arg)}
-            else if ("kwarg"['$===']($case)) {return self.kwargs['$<<'](arg)}
-            else if ("kwoptarg"['$===']($case)) {return self.kwoptargs['$<<'](arg)}
-            else if ("kwnilarg"['$===']($case)) {return (self.kwnilarg = true)}
-            else if ("kwrestarg"['$===']($case)) {return (self.kwrestarg = arg)}
-            else if ("shadowarg"['$===']($case)) {return self.shadowargs['$<<'](arg)}
-            else if ("blockarg"['$===']($case)) {return (self.blockarg = arg)}
-            else {return self.$raise("" + "Unsupported arg type " + (arg.$type()))}})();}, $$2.$$s = self, $$2.$$arity = 1, $$2));
-        }, $Arguments_initialize$1.$$arity = 1);
-        
-        Opal.def(self, '$has_post_args?', $Arguments_has_post_args$ques$3 = function() {
-          var self = this, $ret_or_2 = nil, $ret_or_3 = nil, $ret_or_4 = nil;
-
-          if ($truthy(($ret_or_2 = (function() {if ($truthy(($ret_or_3 = self.restarg['$nil?']()['$!']()))) {
-            return $ret_or_3
-          } else {
-            return self.postargs['$any?']()
-          }; return nil; })()))) {
-            return $ret_or_2
+            if (arg == null) arg = nil;;
+            if (($eqeqeq("arg", ($ret_or_1 = arg.$type())) || ($eqeqeq("mlhs", $ret_or_1)))) {
+              return (($truthy(self.restarg) || ($truthy(self.optargs['$any?']()))) ? (self.postargs) : (self.args))['$<<'](arg)
+            } else if ($eqeqeq("optarg", $ret_or_1)) {
+              return self.optargs['$<<'](arg)
+            } else if ($eqeqeq("restarg", $ret_or_1)) {
+              return (self.restarg = arg)
+            } else if ($eqeqeq("kwarg", $ret_or_1)) {
+              return self.kwargs['$<<'](arg)
+            } else if ($eqeqeq("kwoptarg", $ret_or_1)) {
+              return self.kwoptargs['$<<'](arg)
+            } else if ($eqeqeq("kwnilarg", $ret_or_1)) {
+              return (self.kwnilarg = true)
+            } else if ($eqeqeq("kwrestarg", $ret_or_1)) {
+              return (self.kwrestarg = arg)
+            } else if ($eqeqeq("shadowarg", $ret_or_1)) {
+              return self.shadowargs['$<<'](arg)
+            } else if ($eqeqeq("blockarg", $ret_or_1)) {
+              return (self.blockarg = arg)
+            } else {
+              return self.$raise("Unsupported arg type " + (arg.$type()))
+            };}, {$$arity: 1, $$s: self});
+        }, 1);
+        
+        $def(self, '$has_post_args?', function $Arguments_has_post_args$ques$2() {
+          var self = this, $ret_or_1 = nil, $ret_or_2 = nil;
+
+          if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = self.restarg['$nil?']()['$!']())) ? ($ret_or_2) : (self.postargs['$any?']()))))) {
+            return $ret_or_1
           } else {
             
-            if ($truthy(($ret_or_4 = self['$has_any_kwargs?']()))) {
+            if ($truthy(($ret_or_2 = self['$has_any_kwargs?']()))) {
               return self['$can_inline_kwargs?']()['$!']()
             } else {
-              return $ret_or_4
+              return $ret_or_2
             };
           }
-        }, $Arguments_has_post_args$ques$3.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$has_any_kwargs?', $Arguments_has_any_kwargs$ques$4 = function() {
-          var self = this, $ret_or_5 = nil, $ret_or_6 = nil;
+        $def(self, '$has_any_kwargs?', function $Arguments_has_any_kwargs$ques$3() {
+          var self = this, $ret_or_1 = nil, $ret_or_2 = nil;
 
-          if ($truthy(($ret_or_5 = (function() {if ($truthy(($ret_or_6 = self.kwargs['$any?']()))) {
-            return $ret_or_6
-          } else {
-            return self.kwoptargs['$any?']()
-          }; return nil; })()))) {
-            return $ret_or_5
+          if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = self.kwargs['$any?']())) ? ($ret_or_2) : (self.kwoptargs['$any?']()))))) {
+            return $ret_or_1
           } else {
             return self.kwrestarg['$nil?']()['$!']()
           }
-        }, $Arguments_has_any_kwargs$ques$4.$$arity = 0);
-        return (Opal.def(self, '$can_inline_kwargs?', $Arguments_can_inline_kwargs$ques$5 = function() {
-          var self = this, $ret_or_7 = nil, $ret_or_8 = nil;
+        }, 0);
+        return $def(self, '$can_inline_kwargs?', function $Arguments_can_inline_kwargs$ques$4() {
+          var self = this, $ret_or_1 = nil, $ret_or_2 = nil;
 
-          if ($truthy(($ret_or_7 = (function() {if ($truthy(($ret_or_8 = self.optargs['$empty?']()))) {
-            return self.restarg['$nil?']()
-          } else {
-            return $ret_or_8
-          }; return nil; })()))) {
+          if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = self.optargs['$empty?']())) ? (self.restarg['$nil?']()) : ($ret_or_2))))) {
             return self.postargs['$empty?']()
           } else {
-            return $ret_or_7
+            return $ret_or_1
           }
-        }, $Arguments_can_inline_kwargs$ques$5.$$arity = 0), nil) && 'can_inline_kwargs?';
-      })($nesting[0], null, $nesting)
+        }, 0);
+      })($nesting[0], null)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/rewriters/inline_args"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $truthy = Opal.truthy, $hash2 = Opal.hash2, $send = Opal.send;
+Opal.modules["opal/rewriters/inline_args"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $to_a = Opal.to_a, $truthy = Opal.truthy, $hash2 = Opal.hash2, $def = Opal.def, $const_set = Opal.const_set, $send = Opal.send, $eqeq = Opal.eqeq, $Opal = Opal.Opal;
 
-  Opal.add_stubs(['$require', '$s', '$new', '$updated', '$inline', '$prepend_to_body', '$initialization', '$attr_reader', '$freeze', '$children', '$each', '$send', '$any?', '$blockarg', '$<<', '$shadowargs', '$args', '$==', '$[]', '$has_post_args?', '$length', '$has_any_kwargs?', '$can_inline_kwargs?', '$kwargs', '$kwoptargs', '$kwrestarg', '$postargs', '$optargs', '$args_to_keep', '$restarg']);
+  Opal.add_stubs('require,s,new,updated,inline,prepend_to_body,initialization,attr_reader,freeze,children,each,send,any?,blockarg,<<,shadowargs,args,==,[],has_post_args?,length,has_any_kwargs?,can_inline_kwargs?,kwargs,kwoptargs,kwrestarg,postargs,optargs,args_to_keep,restarg');
   
   self.$require("opal/rewriters/base");
   self.$require("opal/rewriters/arguments");
@@ -29932,80 +26894,68 @@ Opal.modules["opal/rewriters/inline_args"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Rewriters');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'InlineArgs');
 
-        var $nesting = [self].concat($parent_nesting), $InlineArgs_on_def$1, $InlineArgs_on_defs$2, $InlineArgs_on_iter$3;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
         
         
-        Opal.def(self, '$on_def', $InlineArgs_on_def$1 = function $$on_def(node) {
-          var $a, $iter = $InlineArgs_on_def$1.$$p, $yield = $iter || nil, self = this, mid = nil, args = nil, body = nil, $ret_or_1 = nil, initializer = nil, inline_args = nil;
+        $def(self, '$on_def', function $$on_def(node) {
+          var $a, $yield = $$on_def.$$p || nil, self = this, mid = nil, args = nil, body = nil, $ret_or_1 = nil, initializer = nil, inline_args = nil;
 
-          if ($iter) $InlineArgs_on_def$1.$$p = null;
+          delete $$on_def.$$p;
           
-          node = $send2(self, $find_super(self, 'on_def', $InlineArgs_on_def$1, false, true), 'on_def', [node], null);
-          $a = [].concat(Opal.to_a(node)), (mid = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), $a;
-          body = (function() {if ($truthy(($ret_or_1 = body))) {
-            return $ret_or_1
-          } else {
-            return self.$s("nil")
-          }; return nil; })();
-          initializer = $$($nesting, 'Initializer').$new(args, $hash2(["type"], {"type": "def"}));
+          node = $send2(self, $find_super(self, 'on_def', $$on_def, false, true), 'on_def', [node], null);
+          $a = [].concat($to_a(node)), (mid = ($a[0] == null ? nil : $a[0])), (args = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), $a;
+          body = ($truthy(($ret_or_1 = body)) ? ($ret_or_1) : (self.$s("nil")));
+          initializer = $$('Initializer').$new(args, $hash2(["type"], {"type": "def"}));
           inline_args = args.$updated(nil, initializer.$inline());
           body = self.$prepend_to_body(body, initializer.$initialization());
           return node.$updated(nil, [mid, inline_args, body]);
-        }, $InlineArgs_on_def$1.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$on_defs', $InlineArgs_on_defs$2 = function $$on_defs(node) {
-          var $a, $iter = $InlineArgs_on_defs$2.$$p, $yield = $iter || nil, self = this, recv = nil, mid = nil, args = nil, body = nil, $ret_or_2 = nil, initializer = nil, inline_args = nil;
+        $def(self, '$on_defs', function $$on_defs(node) {
+          var $a, $yield = $$on_defs.$$p || nil, self = this, recv = nil, mid = nil, args = nil, body = nil, $ret_or_1 = nil, initializer = nil, inline_args = nil;
 
-          if ($iter) $InlineArgs_on_defs$2.$$p = null;
+          delete $$on_defs.$$p;
           
-          node = $send2(self, $find_super(self, 'on_defs', $InlineArgs_on_defs$2, false, true), 'on_defs', [node], null);
-          $a = [].concat(Opal.to_a(node)), (recv = ($a[0] == null ? nil : $a[0])), (mid = ($a[1] == null ? nil : $a[1])), (args = ($a[2] == null ? nil : $a[2])), (body = ($a[3] == null ? nil : $a[3])), $a;
-          body = (function() {if ($truthy(($ret_or_2 = body))) {
-            return $ret_or_2
-          } else {
-            return self.$s("nil")
-          }; return nil; })();
-          initializer = $$($nesting, 'Initializer').$new(args, $hash2(["type"], {"type": "defs"}));
+          node = $send2(self, $find_super(self, 'on_defs', $$on_defs, false, true), 'on_defs', [node], null);
+          $a = [].concat($to_a(node)), (recv = ($a[0] == null ? nil : $a[0])), (mid = ($a[1] == null ? nil : $a[1])), (args = ($a[2] == null ? nil : $a[2])), (body = ($a[3] == null ? nil : $a[3])), $a;
+          body = ($truthy(($ret_or_1 = body)) ? ($ret_or_1) : (self.$s("nil")));
+          initializer = $$('Initializer').$new(args, $hash2(["type"], {"type": "defs"}));
           inline_args = args.$updated(nil, initializer.$inline());
           body = self.$prepend_to_body(body, initializer.$initialization());
           return node.$updated(nil, [recv, mid, inline_args, body]);
-        }, $InlineArgs_on_defs$2.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$on_iter', $InlineArgs_on_iter$3 = function $$on_iter(node) {
-          var $a, $iter = $InlineArgs_on_iter$3.$$p, $yield = $iter || nil, self = this, args = nil, body = nil, $ret_or_3 = nil, initializer = nil, inline_args = nil;
+        $def(self, '$on_iter', function $$on_iter(node) {
+          var $a, $yield = $$on_iter.$$p || nil, self = this, args = nil, body = nil, $ret_or_1 = nil, initializer = nil, inline_args = nil;
 
-          if ($iter) $InlineArgs_on_iter$3.$$p = null;
+          delete $$on_iter.$$p;
           
-          node = $send2(self, $find_super(self, 'on_iter', $InlineArgs_on_iter$3, false, true), 'on_iter', [node], null);
-          $a = [].concat(Opal.to_a(node)), (args = ($a[0] == null ? nil : $a[0])), (body = ($a[1] == null ? nil : $a[1])), $a;
-          body = (function() {if ($truthy(($ret_or_3 = body))) {
-            return $ret_or_3
-          } else {
-            return self.$s("nil")
-          }; return nil; })();
-          initializer = $$($nesting, 'Initializer').$new(args, $hash2(["type"], {"type": "iter"}));
+          node = $send2(self, $find_super(self, 'on_iter', $$on_iter, false, true), 'on_iter', [node], null);
+          $a = [].concat($to_a(node)), (args = ($a[0] == null ? nil : $a[0])), (body = ($a[1] == null ? nil : $a[1])), $a;
+          body = ($truthy(($ret_or_1 = body)) ? ($ret_or_1) : (self.$s("nil")));
+          initializer = $$('Initializer').$new(args, $hash2(["type"], {"type": "iter"}));
           inline_args = args.$updated(nil, initializer.$inline());
           body = self.$prepend_to_body(body, initializer.$initialization());
           return node.$updated(nil, [inline_args, body]);
-        }, $InlineArgs_on_iter$3.$$arity = 1);
+        }, 1);
         return (function($base, $super, $parent_nesting) {
           var self = $klass($base, $super, 'Initializer');
 
-          var $nesting = [self].concat($parent_nesting), $Initializer_initialize$4, $Initializer_extract_blockarg$6, $Initializer_initialize_shadowargs$7, $Initializer_extract_args$9, $Initializer_prepare_post_args$11, $Initializer_prepare_kwargs$12, $Initializer_extract_kwargs$13, $Initializer_extract_kwoptargs$15, $Initializer_extract_kwrestarg$17, $Initializer_extract_post_args$18, $Initializer_extract_optargs$20, $Initializer_extract_restarg$22, $Initializer_args_to_keep$23;
+          var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-          self.$$prototype.initialization = self.$$prototype.args = self.$$prototype.inline = nil;
+          $proto.initialization = $proto.args = $proto.inline = nil;
           
           self.$attr_reader("inline", "initialization");
-          Opal.const_set($nesting[0], 'STEPS', ["extract_blockarg", "initialize_shadowargs", "extract_args", "prepare_post_args", "prepare_kwargs", "extract_optargs", "extract_restarg", "extract_post_args", "extract_kwargs", "extract_kwoptargs", "extract_kwrestarg"].$freeze());
+          $const_set($nesting[0], 'STEPS', ["extract_blockarg", "initialize_shadowargs", "extract_args", "prepare_post_args", "prepare_kwargs", "extract_optargs", "extract_restarg", "extract_post_args", "extract_kwargs", "extract_kwoptargs", "extract_kwrestarg"].$freeze());
           
-          Opal.def(self, '$initialize', $Initializer_initialize$4 = function $$initialize(args, $kwargs) {
-            var type, $$5, self = this;
+          $def(self, '$initialize', function $$initialize(args, $kwargs) {
+            var type, self = this;
 
             
             
@@ -30019,27 +26969,25 @@ Opal.modules["opal/rewriters/inline_args"] = function(Opal) {
               throw Opal.ArgumentError.$new('missing keyword: type');
             }
             type = $kwargs.$$smap["type"];;
-            self.args = $$($nesting, 'Arguments').$new(args.$children());
+            self.args = $$('Arguments').$new(args.$children());
             self.inline = [];
             self.initialization = [];
             self.type = type;
             self.underscore_found = false;
-            $send($$($nesting, 'STEPS'), 'each', [], ($$5 = function(step){var self = $$5.$$s == null ? this : $$5.$$s;
+            $send($$('STEPS'), 'each', [], function $$1(step){var self = $$1.$$s == null ? this : $$1.$$s;
 
               
               
-              if (step == null) {
-                step = nil;
-              };
-              return self.$send(step);}, $$5.$$s = self, $$5.$$arity = 1, $$5));
+              if (step == null) step = nil;;
+              return self.$send(step);}, {$$arity: 1, $$s: self});
             if ($truthy(self.initialization['$any?']())) {
-              return (self.initialization = $send(self, 's', ["begin"].concat(Opal.to_a(self.initialization))))
+              return (self.initialization = $send(self, 's', ["begin"].concat($to_a(self.initialization))))
             } else {
               return (self.initialization = nil)
             };
-          }, $Initializer_initialize$4.$$arity = 2);
+          }, 2);
           
-          Opal.def(self, '$extract_blockarg', $Initializer_extract_blockarg$6 = function $$extract_blockarg() {
+          $def(self, '$extract_blockarg', function $$extract_blockarg() {
             var self = this, arg = nil;
 
             if ($truthy((arg = self.args.$blockarg()))) {
@@ -30047,26 +26995,24 @@ Opal.modules["opal/rewriters/inline_args"] = function(Opal) {
             } else {
               return nil
             }
-          }, $Initializer_extract_blockarg$6.$$arity = 0);
+          }, 0);
           
-          Opal.def(self, '$initialize_shadowargs', $Initializer_initialize_shadowargs$7 = function $$initialize_shadowargs() {
-            var $$8, self = this;
+          $def(self, '$initialize_shadowargs', function $$initialize_shadowargs() {
+            var self = this;
 
-            return $send(self.args.$shadowargs(), 'each', [], ($$8 = function(arg){var self = $$8.$$s == null ? this : $$8.$$s;
+            return $send(self.args.$shadowargs(), 'each', [], function $$2(arg){var self = $$2.$$s == null ? this : $$2.$$s;
               if (self.initialization == null) self.initialization = nil;
 
               
               
-              if (arg == null) {
-                arg = nil;
-              };
-              return self.initialization['$<<'](arg.$updated("initialize_shadowarg"));}, $$8.$$s = self, $$8.$$arity = 1, $$8))
-          }, $Initializer_initialize_shadowargs$7.$$arity = 0);
+              if (arg == null) arg = nil;;
+              return self.initialization['$<<'](arg.$updated("initialize_shadowarg"));}, {$$arity: 1, $$s: self})
+          }, 0);
           
-          Opal.def(self, '$extract_args', $Initializer_extract_args$9 = function $$extract_args() {
-            var $$10, self = this;
+          $def(self, '$extract_args', function $$extract_args() {
+            var self = this;
 
-            return $send(self.args.$args(), 'each', [], ($$10 = function(arg){var self = $$10.$$s == null ? this : $$10.$$s;
+            return $send(self.args.$args(), 'each', [], function $$3(arg){var self = $$3.$$s == null ? this : $$3.$$s;
               if (self.type == null) self.type = nil;
               if (self.initialization == null) self.initialization = nil;
               if (self.underscore_found == null) self.underscore_found = nil;
@@ -30074,21 +27020,22 @@ Opal.modules["opal/rewriters/inline_args"] = function(Opal) {
 
               
               
-              if (arg == null) {
-                arg = nil;
-              };
-              if (self.type['$==']("iter")) {
+              if (arg == null) arg = nil;;
+              if ($eqeq(self.type, "iter")) {
                 
                 self.initialization['$<<'](arg.$updated("initialize_iter_arg"));
-                if (arg.$children()['$[]'](0)['$==']("_")) {
+                if ($eqeq(arg.$children()['$[]'](0), "_")) {
                   
                   if ($truthy(self.underscore_found)) {
-                    arg = self.$s("fake_arg")};
-                  self.underscore_found = true;};};
-              return self.inline['$<<'](arg);}, $$10.$$s = self, $$10.$$arity = 1, $$10))
-          }, $Initializer_extract_args$9.$$arity = 0);
+                    arg = self.$s("fake_arg")
+                  };
+                  self.underscore_found = true;
+                };
+              };
+              return self.inline['$<<'](arg);}, {$$arity: 1, $$s: self})
+          }, 0);
           
-          Opal.def(self, '$prepare_post_args', $Initializer_prepare_post_args$11 = function $$prepare_post_args() {
+          $def(self, '$prepare_post_args', function $$prepare_post_args() {
             var self = this;
 
             if ($truthy(self.args['$has_post_args?']())) {
@@ -30096,14 +27043,13 @@ Opal.modules["opal/rewriters/inline_args"] = function(Opal) {
             } else {
               return nil
             }
-          }, $Initializer_prepare_post_args$11.$$arity = 0);
+          }, 0);
           
-          Opal.def(self, '$prepare_kwargs', $Initializer_prepare_kwargs$12 = function $$prepare_kwargs() {
+          $def(self, '$prepare_kwargs', function $$prepare_kwargs() {
             var self = this;
 
             
-            if ($truthy(self.args['$has_any_kwargs?']())) {
-            } else {
+            if (!$truthy(self.args['$has_any_kwargs?']())) {
               return nil
             };
             if ($truthy(self.args['$can_inline_kwargs?']())) {
@@ -30114,37 +27060,33 @@ Opal.modules["opal/rewriters/inline_args"] = function(Opal) {
               self.inline['$<<'](self.$s("fake_arg"));
             };
             return self.initialization['$<<'](self.$s("ensure_kwargs_are_kwargs"));
-          }, $Initializer_prepare_kwargs$12.$$arity = 0);
+          }, 0);
           
-          Opal.def(self, '$extract_kwargs', $Initializer_extract_kwargs$13 = function $$extract_kwargs() {
-            var $$14, self = this;
+          $def(self, '$extract_kwargs', function $$extract_kwargs() {
+            var self = this;
 
-            return $send(self.args.$kwargs(), 'each', [], ($$14 = function(arg){var self = $$14.$$s == null ? this : $$14.$$s;
+            return $send(self.args.$kwargs(), 'each', [], function $$4(arg){var self = $$4.$$s == null ? this : $$4.$$s;
               if (self.initialization == null) self.initialization = nil;
 
               
               
-              if (arg == null) {
-                arg = nil;
-              };
-              return self.initialization['$<<'](arg.$updated("extract_kwarg"));}, $$14.$$s = self, $$14.$$arity = 1, $$14))
-          }, $Initializer_extract_kwargs$13.$$arity = 0);
+              if (arg == null) arg = nil;;
+              return self.initialization['$<<'](arg.$updated("extract_kwarg"));}, {$$arity: 1, $$s: self})
+          }, 0);
           
-          Opal.def(self, '$extract_kwoptargs', $Initializer_extract_kwoptargs$15 = function $$extract_kwoptargs() {
-            var $$16, self = this;
+          $def(self, '$extract_kwoptargs', function $$extract_kwoptargs() {
+            var self = this;
 
-            return $send(self.args.$kwoptargs(), 'each', [], ($$16 = function(arg){var self = $$16.$$s == null ? this : $$16.$$s;
+            return $send(self.args.$kwoptargs(), 'each', [], function $$5(arg){var self = $$5.$$s == null ? this : $$5.$$s;
               if (self.initialization == null) self.initialization = nil;
 
               
               
-              if (arg == null) {
-                arg = nil;
-              };
-              return self.initialization['$<<'](arg.$updated("extract_kwoptarg"));}, $$16.$$s = self, $$16.$$arity = 1, $$16))
-          }, $Initializer_extract_kwoptargs$15.$$arity = 0);
+              if (arg == null) arg = nil;;
+              return self.initialization['$<<'](arg.$updated("extract_kwoptarg"));}, {$$arity: 1, $$s: self})
+          }, 0);
           
-          Opal.def(self, '$extract_kwrestarg', $Initializer_extract_kwrestarg$17 = function $$extract_kwrestarg() {
+          $def(self, '$extract_kwrestarg', function $$extract_kwrestarg() {
             var self = this, arg = nil;
 
             if ($truthy((arg = self.args.$kwrestarg()))) {
@@ -30152,51 +27094,47 @@ Opal.modules["opal/rewriters/inline_args"] = function(Opal) {
             } else {
               return nil
             }
-          }, $Initializer_extract_kwrestarg$17.$$arity = 0);
+          }, 0);
           
-          Opal.def(self, '$extract_post_args', $Initializer_extract_post_args$18 = function $$extract_post_args() {
-            var $$19, self = this;
+          $def(self, '$extract_post_args', function $$extract_post_args() {
+            var self = this;
 
-            return $send(self.args.$postargs(), 'each', [], ($$19 = function(arg){var self = $$19.$$s == null ? this : $$19.$$s;
+            return $send(self.args.$postargs(), 'each', [], function $$6(arg){var self = $$6.$$s == null ? this : $$6.$$s;
               if (self.initialization == null) self.initialization = nil;
               if (self.inline == null) self.inline = nil;
 
               
               
-              if (arg == null) {
-                arg = nil;
-              };
+              if (arg == null) arg = nil;;
               self.initialization['$<<'](arg.$updated("extract_post_arg"));
-              return self.inline['$<<'](self.$s("fake_arg"));}, $$19.$$s = self, $$19.$$arity = 1, $$19))
-          }, $Initializer_extract_post_args$18.$$arity = 0);
+              return self.inline['$<<'](self.$s("fake_arg"));}, {$$arity: 1, $$s: self})
+          }, 0);
           
-          Opal.def(self, '$extract_optargs', $Initializer_extract_optargs$20 = function $$extract_optargs() {
-            var $$21, self = this, has_post_args = nil;
+          $def(self, '$extract_optargs', function $$extract_optargs() {
+            var self = this, has_post_args = nil;
 
             
             has_post_args = self.args['$has_post_args?']();
-            return $send(self.args.$optargs(), 'each', [], ($$21 = function(arg){var self = $$21.$$s == null ? this : $$21.$$s, $a, arg_name = nil, default_value = nil;
+            return $send(self.args.$optargs(), 'each', [], function $$7(arg){var $a, self = $$7.$$s == null ? this : $$7.$$s, arg_name = nil, default_value = nil;
               if (self.initialization == null) self.initialization = nil;
               if (self.inline == null) self.inline = nil;
 
               
               
-              if (arg == null) {
-                arg = nil;
-              };
+              if (arg == null) arg = nil;;
               if ($truthy(has_post_args)) {
                 
-                $a = [].concat(Opal.to_a(arg)), (arg_name = ($a[0] == null ? nil : $a[0])), (default_value = ($a[1] == null ? nil : $a[1])), $a;
+                $a = [].concat($to_a(arg)), (arg_name = ($a[0] == null ? nil : $a[0])), (default_value = ($a[1] == null ? nil : $a[1])), $a;
                 self.initialization['$<<'](arg.$updated("extract_post_optarg", [arg_name, default_value, self.$args_to_keep()]));
                 return self.inline['$<<'](self.$s("fake_arg"));
               } else {
                 
                 self.inline['$<<'](arg.$updated("arg"));
                 return self.initialization['$<<'](arg.$updated("extract_optarg"));
-              };}, $$21.$$s = self, $$21.$$arity = 1, $$21));
-          }, $Initializer_extract_optargs$20.$$arity = 0);
+              };}, {$$arity: 1, $$s: self});
+          }, 0);
           
-          Opal.def(self, '$extract_restarg', $Initializer_extract_restarg$22 = function $$extract_restarg() {
+          $def(self, '$extract_restarg', function $$extract_restarg() {
             var self = this, arg = nil, arg_name = nil;
 
             if ($truthy((arg = self.args.$restarg()))) {
@@ -30207,23 +27145,22 @@ Opal.modules["opal/rewriters/inline_args"] = function(Opal) {
             } else {
               return nil
             }
-          }, $Initializer_extract_restarg$22.$$arity = 0);
-          return (Opal.def(self, '$args_to_keep', $Initializer_args_to_keep$23 = function $$args_to_keep() {
+          }, 0);
+          return $def(self, '$args_to_keep', function $$args_to_keep() {
             var self = this;
 
             return self.args.$postargs().$length()
-          }, $Initializer_args_to_keep$23.$$arity = 0), nil) && 'args_to_keep';
-        })($nesting[0], $$$($$$($$$('::', 'Opal'), 'Rewriters'), 'Base'), $nesting);
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+          }, 0);
+        })($nesting[0], $$$($$$($Opal, 'Rewriters'), 'Base'), $nesting);
+      })($nesting[0], $$('Base'), $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/rewriters/numblocks"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send;
+Opal.modules["opal/rewriters/numblocks"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $to_ary = Opal.to_ary, $send = Opal.send, $to_a = Opal.to_a, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$children', '$s', '$gen_args', '$map']);
+  Opal.add_stubs('require,children,s,gen_args,map');
   
   self.$require("opal/rewriters/base");
   return (function($base, $parent_nesting) {
@@ -30234,47 +27171,40 @@ Opal.modules["opal/rewriters/numblocks"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Rewriters');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'Numblocks');
 
-        var $nesting = [self].concat($parent_nesting), $Numblocks_on_numblock$1, $Numblocks_gen_args$2;
-
         
         
-        Opal.def(self, '$on_numblock', $Numblocks_on_numblock$1 = function $$on_numblock(node) {
+        
+        $def(self, '$on_numblock', function $$on_numblock(node) {
           var $a, $b, self = this, left = nil, arg_count = nil, right = nil;
 
           
-          $b = node.$children(), $a = Opal.to_ary($b), (left = ($a[0] == null ? nil : $a[0])), (arg_count = ($a[1] == null ? nil : $a[1])), (right = ($a[2] == null ? nil : $a[2])), $b;
-          return self.$s("block", left, $send(self, 's', ["args"].concat(Opal.to_a(self.$gen_args(arg_count)))), right);
-        }, $Numblocks_on_numblock$1.$$arity = 1);
-        return (Opal.def(self, '$gen_args', $Numblocks_gen_args$2 = function $$gen_args(arg_count) {
-          var $$3, self = this;
+          $b = node.$children(), $a = $to_ary($b), (left = ($a[0] == null ? nil : $a[0])), (arg_count = ($a[1] == null ? nil : $a[1])), (right = ($a[2] == null ? nil : $a[2])), $b;
+          return self.$s("block", left, $send(self, 's', ["args"].concat($to_a(self.$gen_args(arg_count)))), right);
+        }, 1);
+        return $def(self, '$gen_args', function $$gen_args(arg_count) {
+          var self = this;
 
-          return $send(Opal.Range.$new(1, arg_count, false), 'map', [], ($$3 = function(i){var self = $$3.$$s == null ? this : $$3.$$s;
+          return $send(Opal.Range.$new(1, arg_count, false), 'map', [], function $$1(i){var self = $$1.$$s == null ? this : $$1.$$s;
 
             
             
-            if (i == null) {
-              i = nil;
-            };
-            return self.$s("arg", "" + "_" + (i));}, $$3.$$s = self, $$3.$$arity = 1, $$3))
-        }, $Numblocks_gen_args$2.$$arity = 1), nil) && 'gen_args';
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+            if (i == null) i = nil;;
+            return self.$s("arg", "_" + (i));}, {$$arity: 1, $$s: self})
+        }, 1);
+      })($nesting[0], $$('Base'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/rewriters/returnable_logic"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy;
+Opal.modules["opal/rewriters/returnable_logic"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $rb_plus = Opal.rb_plus, $def = Opal.def, $rb_minus = Opal.rb_minus, $to_a = Opal.to_a, $send = Opal.send, $send2 = Opal.send2, $find_super = Opal.find_super, $slice = Opal.slice, $eqeq = Opal.eqeq;
 
-  Opal.add_stubs(['$require', '$+', '$children', '$next_tmp', '$updated', '$s', '$process']);
+  Opal.add_stubs('require,+,-,children,[]=,meta,s,next_tmp,build_if_from_when,free_tmp,[],process,updated,==,count,first,delete,private,build_rule_from_parts,empty?,type');
   
   self.$require("opal/rewriters/base");
   return (function($base, $parent_nesting) {
@@ -30285,61 +27215,157 @@ Opal.modules["opal/rewriters/returnable_logic"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Rewriters');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'ReturnableLogic');
 
-        var $nesting = [self].concat($parent_nesting), $ReturnableLogic_next_tmp$1, $ReturnableLogic_reset_tmp_counter$excl$2, $ReturnableLogic_on_or$3, $ReturnableLogic_on_and$4;
+        var $proto = self.$$prototype;
 
-        self.$$prototype.counter = nil;
+        $proto.counter = nil;
         
         
-        Opal.def(self, '$next_tmp', $ReturnableLogic_next_tmp$1 = function $$next_tmp() {
+        $def(self, '$next_tmp', function $$next_tmp() {
           var self = this, $ret_or_1 = nil;
 
           
-          self.counter = (function() {if ($truthy(($ret_or_1 = self.counter))) {
-            return $ret_or_1
-          } else {
-            return 0
-          }; return nil; })();
+          self.counter = ($truthy(($ret_or_1 = self.counter)) ? ($ret_or_1) : (0));
           self.counter = $rb_plus(self.counter, 1);
-          return "" + "$ret_or_" + (self.counter);
-        }, $ReturnableLogic_next_tmp$1.$$arity = 0);
+          return "$ret_or_" + (self.counter);
+        }, 0);
         
-        Opal.def(self, '$reset_tmp_counter!', $ReturnableLogic_reset_tmp_counter$excl$2 = function() {
+        $def(self, '$free_tmp', function $$free_tmp() {
+          var self = this;
+
+          return (self.counter = $rb_minus(self.counter, 1))
+        }, 0);
+        
+        $def(self, '$reset_tmp_counter!', function $ReturnableLogic_reset_tmp_counter$excl$1() {
           var self = this;
 
           return (self.counter = nil)
-        }, $ReturnableLogic_reset_tmp_counter$excl$2.$$arity = 0);
+        }, 0);
+        
+        $def(self, '$on_if', function $$on_if(node) {
+          var $a, $yield = $$on_if.$$p || nil, self = this, test = nil, $writer = nil;
+
+          delete $$on_if.$$p;
+          
+          $a = [].concat($to_a(node.$children())), (test = ($a[0] == null ? nil : $a[0])), $a;
+          if ($truthy(test)) {
+            
+            $writer = ["if_test", true];
+            $send(test.$meta(), '[]=', $to_a($writer));
+            $writer[$rb_minus($writer["length"], 1)];
+          };
+          return $send2(self, $find_super(self, 'on_if', $$on_if, false, true), 'on_if', [node], $yield);
+        }, 1);
+        
+        $def(self, '$on_case', function $$on_case(node) {
+          var $a, $b, self = this, lhs = nil, whens = nil, els = nil, $ret_or_1 = nil, lhs_tmp = nil, out = nil;
+
+          
+          $a = [].concat($to_a(node.$children())), (lhs = ($a[0] == null ? nil : $a[0])), $b = $a.length - 1, $b = ($b < 1) ? 1 : $b, (whens = $slice.call($a, 1, $b)), (els = ($a[$b] == null ? nil : $a[$b])), $a;
+          els = ($truthy(($ret_or_1 = els)) ? ($ret_or_1) : (self.$s("nil")));
+          if ($truthy(lhs)) {
+            lhs_tmp = self.$next_tmp()
+          };
+          out = self.$build_if_from_when(node, lhs, lhs_tmp, whens, els);
+          if ($truthy(lhs)) {
+            self.$free_tmp()
+          };
+          return out;
+        }, 1);
+        
+        $def(self, '$on_or', function $$on_or(node) {
+          var $a, self = this, lhs = nil, rhs = nil, $writer = nil, out = nil, lhs_tmp = nil;
+
+          
+          $a = [].concat($to_a(node.$children())), (lhs = ($a[0] == null ? nil : $a[0])), (rhs = ($a[1] == null ? nil : $a[1])), $a;
+          if ($truthy(node.$meta()['$[]']("if_test"))) {
+            
+            
+            $writer = ["if_test", (($writer = ["if_test", true]), $send(rhs.$meta(), '[]=', $to_a($writer)), $writer[$rb_minus($writer["length"], 1)])];
+            $send(lhs.$meta(), '[]=', $to_a($writer));
+            $writer[$rb_minus($writer["length"], 1)];;
+            out = self.$process(node.$updated("if", [lhs, self.$s("true"), rhs]));
+          } else {
+            
+            lhs_tmp = self.$next_tmp();
+            out = self.$process(node.$updated("if", [self.$s("lvasgn", lhs_tmp, lhs), self.$s("js_tmp", lhs_tmp), rhs]));
+            self.$free_tmp();
+          };
+          return out;
+        }, 1);
+        
+        $def(self, '$on_and', function $$on_and(node) {
+          var $a, self = this, lhs = nil, rhs = nil, $writer = nil, out = nil, lhs_tmp = nil;
+
+          
+          $a = [].concat($to_a(node.$children())), (lhs = ($a[0] == null ? nil : $a[0])), (rhs = ($a[1] == null ? nil : $a[1])), $a;
+          if ($truthy(node.$meta()['$[]']("if_test"))) {
+            
+            
+            $writer = ["if_test", (($writer = ["if_test", true]), $send(rhs.$meta(), '[]=', $to_a($writer)), $writer[$rb_minus($writer["length"], 1)])];
+            $send(lhs.$meta(), '[]=', $to_a($writer));
+            $writer[$rb_minus($writer["length"], 1)];;
+            out = self.$process(node.$updated("if", [lhs, rhs, self.$s("false")]));
+          } else {
+            
+            lhs_tmp = self.$next_tmp();
+            out = self.$process(node.$updated("if", [self.$s("lvasgn", lhs_tmp, lhs), rhs, self.$s("js_tmp", lhs_tmp)]));
+            self.$free_tmp();
+          };
+          return out;
+        }, 1);
+        
+        $def(self, '$on_begin', function $$on_begin(node) {
+          var $yield = $$on_begin.$$p || nil, self = this, $writer = nil;
+
+          delete $$on_begin.$$p;
+          
+          if (($truthy(node.$meta()['$[]']("if_test")) && ($eqeq(node.$children().$count(), 1)))) {
+            
+            $writer = ["if_test", true];
+            $send(node.$children().$first().$meta(), '[]=', $to_a($writer));
+            $writer[$rb_minus($writer["length"], 1)];
+          };
+          node.$meta().$delete("if_test");
+          return $send2(self, $find_super(self, 'on_begin', $$on_begin, false, true), 'on_begin', [node], $yield);
+        }, 1);
+        self.$private();
         
-        Opal.def(self, '$on_or', $ReturnableLogic_on_or$3 = function $$on_or(node) {
-          var $a, self = this, lhs = nil, rhs = nil, lhs_tmp = nil;
+        $def(self, '$build_if_from_when', function $$build_if_from_when(node, lhs, lhs_tmp, whens, els) {
+          var $a, $b, self = this, first_when = nil, next_whens = nil, parts = nil, expr = nil, rule = nil;
 
           
-          $a = [].concat(Opal.to_a(node.$children())), (lhs = ($a[0] == null ? nil : $a[0])), (rhs = ($a[1] == null ? nil : $a[1])), $a;
-          lhs_tmp = self.$next_tmp();
-          return node.$updated("if", [self.$s("lvasgn", lhs_tmp, self.$process(lhs)), self.$s("js_tmp", lhs_tmp), self.$process(rhs)]);
-        }, $ReturnableLogic_on_or$3.$$arity = 1);
-        return (Opal.def(self, '$on_and', $ReturnableLogic_on_and$4 = function $$on_and(node) {
-          var $a, self = this, lhs = nil, rhs = nil, lhs_tmp = nil;
+          $a = [].concat($to_a(whens)), (first_when = ($a[0] == null ? nil : $a[0])), (next_whens = $slice.call($a, 1)), $a;
+          $a = [].concat($to_a(first_when.$children())), $b = $a.length - 1, $b = ($b < 0) ? 0 : $b, (parts = $slice.call($a, 0, $b)), (expr = ($a[$b] == null ? nil : $a[$b])), $a;
+          rule = self.$build_rule_from_parts(node, lhs, lhs_tmp, parts);
+          return first_when.$updated("if", [rule, self.$process(expr), ($truthy(next_whens['$empty?']()) ? (self.$process(els)) : (self.$build_if_from_when(nil, nil, lhs_tmp, next_whens, els)))]);
+        }, 5);
+        return $def(self, '$build_rule_from_parts', function $$build_rule_from_parts(node, lhs, lhs_tmp, parts) {
+          var $a, self = this, first_part = nil, next_parts = nil, subrule = nil, splat_on = nil, iter_val = nil, block = nil;
 
           
-          $a = [].concat(Opal.to_a(node.$children())), (lhs = ($a[0] == null ? nil : $a[0])), (rhs = ($a[1] == null ? nil : $a[1])), $a;
-          lhs_tmp = self.$next_tmp();
-          return node.$updated("if", [self.$s("lvasgn", lhs_tmp, self.$process(lhs)), self.$process(rhs), self.$s("js_tmp", lhs_tmp)]);
-        }, $ReturnableLogic_on_and$4.$$arity = 1), nil) && 'on_and';
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+          lhs = (($truthy(node) && ($truthy(lhs_tmp))) ? (node.$updated("lvasgn", [lhs_tmp, self.$process(lhs)])) : (self.$s("js_tmp", lhs_tmp)));
+          $a = [].concat($to_a(parts)), (first_part = ($a[0] == null ? nil : $a[0])), (next_parts = $slice.call($a, 1)), $a;
+          subrule = ($eqeq(first_part.$type(), "splat") ? (((splat_on = first_part.$children().$first()), (iter_val = self.$next_tmp()), (block = self.$s("send", self.$process(splat_on), "any?", self.$s("iter", self.$s("args", self.$s("arg", iter_val)), self.$build_rule_from_parts(nil, nil, lhs_tmp, [self.$s("lvar", iter_val)])))), (($truthy(node) && ($truthy(lhs_tmp))) ? (self.$s("begin", lhs, block)) : (block)))) : ($truthy(lhs_tmp) ? (self.$s("send", self.$process(first_part), "===", lhs)) : (self.$process(first_part))));
+          if ($truthy(next_parts['$empty?']())) {
+            return subrule
+          } else {
+            return self.$s("if", subrule, self.$s("true"), self.$build_rule_from_parts(nil, nil, lhs_tmp, next_parts))
+          };
+        }, 4);
+      })($nesting[0], $$('Base'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/rewriters/forward_args"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $range = Opal.range, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["opal/rewriters/forward_args"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $def = Opal.def, $eqeq = Opal.eqeq, $truthy = Opal.truthy, $range = Opal.range, $to_a = Opal.to_a, $send2 = Opal.send2, $find_super = Opal.find_super, $neqeq = Opal.neqeq;
 
-  Opal.add_stubs(['$require', '$process', '$s', '$last', '$children', '$==', '$type', '$[]', '$updated', '$!=', '$class']);
+  Opal.add_stubs('require,process,s,==,type,last,children,[],updated,!=,class');
   
   self.$require("opal/rewriters/base");
   return (function($base, $parent_nesting) {
@@ -30350,75 +27376,54 @@ Opal.modules["opal/rewriters/forward_args"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Rewriters');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'ForwardArgs');
 
-        var $nesting = [self].concat($parent_nesting), $ForwardArgs_on_forward_args$1, $ForwardArgs_on_args$2, $ForwardArgs_on_send$3;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
         
         
-        Opal.def(self, '$on_forward_args', $ForwardArgs_on_forward_args$1 = function $$on_forward_args(_node) {
+        $def(self, '$on_forward_args', function $$on_forward_args(_node) {
           var self = this;
 
           return self.$process(self.$s("args", self.$s("forward_arg", "$")))
-        }, $ForwardArgs_on_forward_args$1.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$on_args', $ForwardArgs_on_args$2 = function $$on_args(node) {
-          var $iter = $ForwardArgs_on_args$2.$$p, $yield = $iter || nil, self = this, $ret_or_1 = nil, prev_children = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        $def(self, '$on_args', function $$on_args(node) {
+          var $yield = $$on_args.$$p || nil, self = this, prev_children = nil;
 
-          if ($iter) $ForwardArgs_on_args$2.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
-          if ($truthy((function() {if ($truthy(($ret_or_1 = node.$children().$last()))) {
-            return node.$children().$last().$type()['$==']("forward_arg")
-          } else {
-            return $ret_or_1
-          }; return nil; })())) {
+          delete $$on_args.$$p;
+          if (($truthy(node.$children().$last()) && ($eqeq(node.$children().$last().$type(), "forward_arg")))) {
             
             prev_children = node.$children()['$[]']($range(0, -2, false));
-            return node.$updated(nil, [].concat(Opal.to_a(prev_children)).concat([self.$s("restarg", "$fwd_rest"), self.$s("blockarg", "$fwd_block")]));
+            return node.$updated(nil, [].concat($to_a(prev_children)).concat([self.$s("restarg", "$fwd_rest"), self.$s("blockarg", "$fwd_block")]));
           } else {
-            return $send2(self, $find_super(self, 'on_args', $ForwardArgs_on_args$2, false, true), 'on_args', $zuper, $iter)
-          }
-        }, $ForwardArgs_on_args$2.$$arity = 1);
-        return (Opal.def(self, '$on_send', $ForwardArgs_on_send$3 = function $$on_send(node) {
-          var $iter = $ForwardArgs_on_send$3.$$p, $yield = $iter || nil, self = this, $ret_or_2 = nil, $ret_or_3 = nil, prev_children = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
-
-          if ($iter) $ForwardArgs_on_send$3.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
+            return $send2(self, $find_super(self, 'on_args', $$on_args, false, true), 'on_args', [node], $yield)
           }
-          if ($truthy((function() {if ($truthy(($ret_or_2 = (function() {if ($truthy(($ret_or_3 = node.$children().$last()))) {
-            return node.$children().$last().$class()['$!=']($$($nesting, 'Symbol'))
-          } else {
-            return $ret_or_3
-          }; return nil; })()))) {
-            return node.$children().$last().$type()['$==']("forwarded_args")
-          } else {
-            return $ret_or_2
-          }; return nil; })())) {
+        }, 1);
+        return $def(self, '$on_send', function $$on_send(node) {
+          var $yield = $$on_send.$$p || nil, self = this, prev_children = nil;
+
+          delete $$on_send.$$p;
+          if ((($truthy(node.$children().$last()) && ($neqeq(node.$children().$last().$class(), $$('Symbol')))) && ($eqeq(node.$children().$last().$type(), "forwarded_args")))) {
             
             prev_children = node.$children()['$[]']($range(0, -2, false));
-            return node.$updated(nil, [].concat(Opal.to_a(prev_children)).concat([self.$s("splat", self.$s("lvar", "$fwd_rest")), self.$s("block_pass", self.$s("lvar", "$fwd_block"))]));
+            return node.$updated(nil, [].concat($to_a(prev_children)).concat([self.$s("splat", self.$s("lvar", "$fwd_rest")), self.$s("block_pass", self.$s("lvar", "$fwd_block"))]));
           } else {
-            return $send2(self, $find_super(self, 'on_send', $ForwardArgs_on_send$3, false, true), 'on_send', $zuper, $iter)
+            return $send2(self, $find_super(self, 'on_send', $$on_send, false, true), 'on_send', [node], $yield)
           }
-        }, $ForwardArgs_on_send$3.$$arity = 1), nil) && 'on_send';
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+        }, 1);
+      })($nesting[0], $$('Base'), $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/rewriter"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send;
+Opal.modules["opal/rewriter"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $def = Opal.def, $hash2 = Opal.hash2, $eqeq = Opal.eqeq, $send = Opal.send;
 
-  Opal.add_stubs(['$require', '$<<', '$list', '$delete', '$use', '$disabled?', '$class', '$each', '$new', '$process']);
+  Opal.add_stubs('require,<<,list,delete,==,!=,use,disabled?,class,each,rewritter_disabled?,new,process');
   
   self.$require("opal/rewriters/opal_engine_check");
   self.$require("opal/rewriters/for_rewriter");
@@ -30444,108 +27449,124 @@ Opal.modules["opal/rewriter"] = function(Opal) {
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Rewriter');
 
-      var $nesting = [self].concat($parent_nesting), $Rewriter_initialize$6, $Rewriter_process$7;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.sexp = nil;
+      $proto.sexp = nil;
       
+      self.disabled = false;
       (function(self, $parent_nesting) {
-        var $nesting = [self].concat($parent_nesting), $list$1, $use$2, $delete$3, $disable$4, $disabled$ques$5;
-
         
         
-        Opal.def(self, '$list', $list$1 = function $$list() {
+        
+        $def(self, '$list', function $$list() {
           var self = this, $ret_or_1 = nil;
           if (self.list == null) self.list = nil;
 
-          return (self.list = (function() {if ($truthy(($ret_or_1 = self.list))) {
-            return $ret_or_1
-          } else {
-            return []
-          }; return nil; })())
-        }, $list$1.$$arity = 0);
+          return (self.list = ($truthy(($ret_or_1 = self.list)) ? ($ret_or_1) : ([])))
+        }, 0);
         
-        Opal.def(self, '$use', $use$2 = function $$use(rewriter) {
+        $def(self, '$use', function $$use(rewriter) {
           var self = this;
 
           return self.$list()['$<<'](rewriter)
-        }, $use$2.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$delete', $delete$3 = function(rewriter) {
+        $def(self, '$delete', function $delete$1(rewriter) {
           var self = this;
 
           return self.$list().$delete(rewriter)
-        }, $delete$3.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$disable', $disable$4 = function $$disable() {
-          var $iter = $disable$4.$$p, $yield = $iter || nil, self = this;
+        $def(self, '$disable', function $$disable($kwargs) {
+          var except, $yield = $$disable.$$p || nil, self = this, old_disabled = nil, $ret_or_1 = nil;
+          if (self.disabled == null) self.disabled = nil;
 
-          if ($iter) $disable$4.$$p = null;
+          delete $$disable.$$p;
+          
+          
+          if ($kwargs == null) {
+            $kwargs = $hash2([], {});
+          } else if (!$kwargs.$$is_hash) {
+            throw Opal.ArgumentError.$new('expected kwargs');
+          };
+          
+          except = $kwargs.$$smap["except"];
+          if (except == null) except = nil;
           return (function() { try {
           
-          self.disabled = true;
+          old_disabled = self.disabled;
+          self.disabled = ($truthy(($ret_or_1 = except)) ? ($ret_or_1) : (true));
           return Opal.yieldX($yield, []);;
           } finally {
-            (self.disabled = false)
-          }; })()
-        }, $disable$4.$$arity = 0);
-        return (Opal.def(self, '$disabled?', $disabled$ques$5 = function() {
-          var $a, self = this;
+            (self.disabled = old_disabled)
+          }; })();
+        }, -1);
+        
+        $def(self, '$disabled?', function $disabled$ques$2() {
+          var self = this;
           if (self.disabled == null) self.disabled = nil;
 
-          if ($truthy((($a = self['disabled'], $a != null && $a !== nil) ? 'instance-variable' : nil))) {
-            return self.disabled
-          } else {
-            return nil
-          }
-        }, $disabled$ques$5.$$arity = 0), nil) && 'disabled?';
+          return self.disabled['$=='](true)
+        }, 0);
+        return $def(self, '$rewritter_disabled?', function $rewritter_disabled$ques$3(rewriter) {
+          var self = this;
+          if (self.disabled == null) self.disabled = nil;
+
+          
+          if ($eqeq(self.disabled, false)) {
+            return false
+          };
+          return self.disabled['$!='](rewriter);
+        }, 1);
       })(Opal.get_singleton_class(self), $nesting);
-      self.$use($$$($$($nesting, 'Rewriters'), 'OpalEngineCheck'));
-      self.$use($$$($$($nesting, 'Rewriters'), 'ForRewriter'));
-      self.$use($$$($$($nesting, 'Rewriters'), 'Numblocks'));
-      self.$use($$$($$($nesting, 'Rewriters'), 'ForwardArgs'));
-      self.$use($$$($$($nesting, 'Rewriters'), 'BlockToIter'));
-      self.$use($$$($$($nesting, 'Rewriters'), 'DotJsSyntax'));
-      self.$use($$$($$($nesting, 'Rewriters'), 'PatternMatching'));
-      self.$use($$$($$($nesting, 'Rewriters'), 'JsReservedWords'));
-      self.$use($$$($$($nesting, 'Rewriters'), 'LogicalOperatorAssignment'));
-      self.$use($$$($$($nesting, 'Rewriters'), 'BinaryOperatorAssignment'));
-      self.$use($$$($$($nesting, 'Rewriters'), 'ExplicitWriterReturn'));
-      self.$use($$$($$$($$($nesting, 'Rewriters'), 'Hashes'), 'KeyDuplicatesRewriter'));
-      self.$use($$$($$($nesting, 'Rewriters'), 'ReturnableLogic'));
-      self.$use($$$($$($nesting, 'Rewriters'), 'DumpArgs'));
-      self.$use($$$($$($nesting, 'Rewriters'), 'MlhsArgs'));
-      self.$use($$$($$($nesting, 'Rewriters'), 'InlineArgs'));
-      
-      Opal.def(self, '$initialize', $Rewriter_initialize$6 = function $$initialize(sexp) {
+      self.$use($$$($$('Rewriters'), 'OpalEngineCheck'));
+      self.$use($$$($$('Rewriters'), 'ForRewriter'));
+      self.$use($$$($$('Rewriters'), 'Numblocks'));
+      self.$use($$$($$('Rewriters'), 'ForwardArgs'));
+      self.$use($$$($$('Rewriters'), 'BlockToIter'));
+      self.$use($$$($$('Rewriters'), 'DotJsSyntax'));
+      self.$use($$$($$('Rewriters'), 'PatternMatching'));
+      self.$use($$$($$('Rewriters'), 'JsReservedWords'));
+      self.$use($$$($$('Rewriters'), 'LogicalOperatorAssignment'));
+      self.$use($$$($$('Rewriters'), 'BinaryOperatorAssignment'));
+      self.$use($$$($$('Rewriters'), 'ExplicitWriterReturn'));
+      self.$use($$$($$$($$('Rewriters'), 'Hashes'), 'KeyDuplicatesRewriter'));
+      self.$use($$$($$('Rewriters'), 'ReturnableLogic'));
+      self.$use($$$($$('Rewriters'), 'DumpArgs'));
+      self.$use($$$($$('Rewriters'), 'MlhsArgs'));
+      self.$use($$$($$('Rewriters'), 'InlineArgs'));
+      
+      $def(self, '$initialize', function $$initialize(sexp) {
         var self = this;
 
         return (self.sexp = sexp)
-      }, $Rewriter_initialize$6.$$arity = 1);
-      return (Opal.def(self, '$process', $Rewriter_process$7 = function $$process() {
-        var $$8, self = this;
+      }, 1);
+      return $def(self, '$process', function $$process() {
+        var self = this;
 
         
         if ($truthy(self.$class()['$disabled?']())) {
-          return self.sexp};
-        $send(self.$class().$list(), 'each', [], ($$8 = function(rewriter_class){var self = $$8.$$s == null ? this : $$8.$$s, rewriter = nil;
+          return self.sexp
+        };
+        $send(self.$class().$list(), 'each', [], function $$4(rewriter_class){var self = $$4.$$s == null ? this : $$4.$$s, rewriter = nil;
           if (self.sexp == null) self.sexp = nil;
 
           
           
-          if (rewriter_class == null) {
-            rewriter_class = nil;
+          if (rewriter_class == null) rewriter_class = nil;;
+          if ($truthy(self.$class()['$rewritter_disabled?'](rewriter_class))) {
+            return nil;
           };
           rewriter = rewriter_class.$new();
-          return (self.sexp = rewriter.$process(self.sexp));}, $$8.$$s = self, $$8.$$arity = 1, $$8));
+          return (self.sexp = rewriter.$process(self.sexp));}, {$$arity: 1, $$s: self});
         return self.sexp;
-      }, $Rewriter_process$7.$$arity = 0), nil) && 'process';
+      }, 0);
     })($nesting[0], null, $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/parser/source_buffer"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["opal/parser/source_buffer"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send2 = Opal.send2, $find_super = Opal.find_super, $defs = Opal.defs;
 
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Opal');
@@ -30560,35 +27581,27 @@ Opal.modules["opal/parser/source_buffer"] = function(Opal) {
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'SourceBuffer');
 
-        var $nesting = [self].concat($parent_nesting), $SourceBuffer_recognize_encoding$1;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-        return (Opal.defs(self, '$recognize_encoding', $SourceBuffer_recognize_encoding$1 = function $$recognize_encoding(string) {
-          var $iter = $SourceBuffer_recognize_encoding$1.$$p, $yield = $iter || nil, self = this, $ret_or_1 = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        return $defs(self, '$recognize_encoding', function $$recognize_encoding(string) {
+          var $yield = $$recognize_encoding.$$p || nil, self = this, $ret_or_1 = nil;
 
-          if ($iter) $SourceBuffer_recognize_encoding$1.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
-          if ($truthy(($ret_or_1 = $send2(self, $find_super(self, 'recognize_encoding', $SourceBuffer_recognize_encoding$1, false, true), 'recognize_encoding', $zuper, $iter)))) {
+          delete $$recognize_encoding.$$p;
+          if ($truthy(($ret_or_1 = $send2(self, $find_super(self, 'recognize_encoding', $$recognize_encoding, false, true), 'recognize_encoding', [string], $yield)))) {
             return $ret_or_1
           } else {
-            return $$$($$($nesting, 'Encoding'), 'UTF_8')
+            return $$$($$('Encoding'), 'UTF_8')
           }
-        }, $SourceBuffer_recognize_encoding$1.$$arity = 1), nil) && 'recognize_encoding'
-      })($nesting[0], $$$($$$($$$('::', 'Parser'), 'Source'), 'Buffer'), $nesting)
+        }, 1)
+      })($nesting[0], $$$($$$($$$('Parser'), 'Source'), 'Buffer'), $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/parser/default_config"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $send2 = Opal.send2, $find_super = Opal.find_super, $send = Opal.send, $lambda = Opal.lambda;
+Opal.modules["opal/parser/default_config"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $send2 = Opal.send2, $find_super = Opal.find_super, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $def = Opal.def, $lambda = Opal.lambda, $defs = Opal.defs, $truthy = Opal.truthy, $Opal = Opal.Opal;
 
-  Opal.add_stubs(['$attr_accessor', '$all_errors_are_fatal=', '$diagnostics', '$-', '$ignore_warnings=', '$diagnostics_consumer', '$consumer=', '$extend', '$diagnostics_consumer=', '$new', '$rewrite', '$process', '$default_parser', '$default_parser_class']);
+  Opal.add_stubs('attr_accessor,all_errors_are_fatal=,diagnostics,-,ignore_warnings=,diagnostics_consumer,consumer=,extend,diagnostics_consumer=,new,rewrite,process,default_parser,default_parser_class');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Opal');
 
@@ -30603,146 +27616,123 @@ Opal.modules["opal/parser/default_config"] = function(Opal) {
       (function($base, $parent_nesting) {
         var self = $module($base, 'DefaultConfig');
 
-        var $nesting = [self].concat($parent_nesting), $DefaultConfig_included$2, $DefaultConfig_initialize$4, $DefaultConfig_parse$5, $DefaultConfig_rewrite$6;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
         
-        (function($base, $parent_nesting) {
+        (function($base) {
           var self = $module($base, 'ClassMethods');
 
-          var $nesting = [self].concat($parent_nesting), $ClassMethods_default_parser$1;
-
+          
           
           self.$attr_accessor("diagnostics_consumer");
-          return (Opal.def(self, '$default_parser', $ClassMethods_default_parser$1 = function $$default_parser() {
-            var $iter = $ClassMethods_default_parser$1.$$p, $yield = $iter || nil, self = this, parser = nil, $writer = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+          return $def(self, '$default_parser', function $$default_parser() {
+            var $yield = $$default_parser.$$p || nil, self = this, parser = nil, $writer = nil;
 
-            if ($iter) $ClassMethods_default_parser$1.$$p = null;
-            // Prepare super implicit arguments
-            for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-              $zuper[$zuper_i] = arguments[$zuper_i];
-            }
+            delete $$default_parser.$$p;
             
-            parser = $send2(self, $find_super(self, 'default_parser', $ClassMethods_default_parser$1, false, true), 'default_parser', $zuper, $iter);
+            parser = $send2(self, $find_super(self, 'default_parser', $$default_parser, false, true), 'default_parser', [], $yield);
             
             $writer = [true];
-            $send(parser.$diagnostics(), 'all_errors_are_fatal=', Opal.to_a($writer));
+            $send(parser.$diagnostics(), 'all_errors_are_fatal=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
             
             $writer = [false];
-            $send(parser.$diagnostics(), 'ignore_warnings=', Opal.to_a($writer));
+            $send(parser.$diagnostics(), 'ignore_warnings=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
             
             $writer = [self.$diagnostics_consumer()];
-            $send(parser.$diagnostics(), 'consumer=', Opal.to_a($writer));
+            $send(parser.$diagnostics(), 'consumer=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
             return parser;
-          }, $ClassMethods_default_parser$1.$$arity = 0), nil) && 'default_parser';
-        })($nesting[0], $nesting);
-        Opal.defs(self, '$included', $DefaultConfig_included$2 = function $$included(klass) {
-          var $$3, self = this, $writer = nil;
+          }, 0);
+        })($nesting[0]);
+        $defs(self, '$included', function $$included(klass) {
+          var $writer = nil;
 
           
-          klass.$extend($$($nesting, 'ClassMethods'));
+          klass.$extend($$('ClassMethods'));
           
-          $writer = [$lambda(($$3 = function(diagnostic){var self = $$3.$$s == null ? this : $$3.$$s;
-
+          $writer = [$lambda(function $$1(diagnostic){
             
             
-            if (diagnostic == null) {
-              diagnostic = nil;
-            };
-            return nil;}, $$3.$$s = self, $$3.$$arity = 1, $$3))];
-          $send(klass, 'diagnostics_consumer=', Opal.to_a($writer));
+            if (diagnostic == null) diagnostic = nil;;
+            return nil;}, 1)];
+          $send(klass, 'diagnostics_consumer=', $to_a($writer));
           return $writer[$rb_minus($writer["length"], 1)];;
-        }, $DefaultConfig_included$2.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$initialize', $DefaultConfig_initialize$4 = function $$initialize($a) {
-          var $post_args, $iter = $DefaultConfig_initialize$4.$$p, $yield = $iter || nil, self = this;
+        $def(self, '$initialize', function $$initialize($a) {
+          var $post_args, $rest_arg, $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $DefaultConfig_initialize$4.$$p = null;
+          delete $$initialize.$$p;
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
-          ;
-          return $send2(self, $find_super(self, 'initialize', $DefaultConfig_initialize$4, false, true), 'initialize', [$$$($$$($$($nesting, 'Opal'), 'AST'), 'Builder').$new()], null);
-        }, $DefaultConfig_initialize$4.$$arity = -1);
+          $post_args = Opal.slice.call(arguments);
+          
+          $rest_arg = $post_args;;
+          return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [$$$($$$($$('Opal'), 'AST'), 'Builder').$new()], null);
+        }, -1);
         
-        Opal.def(self, '$parse', $DefaultConfig_parse$5 = function $$parse(source_buffer) {
-          var $iter = $DefaultConfig_parse$5.$$p, $yield = $iter || nil, self = this, parsed = nil, rewriten = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        $def(self, '$parse', function $$parse(source_buffer) {
+          var $yield = $$parse.$$p || nil, self = this, parsed = nil, $ret_or_1 = nil, wrapped = nil, rewriten = nil;
 
-          if ($iter) $DefaultConfig_parse$5.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$parse.$$p;
           
-          parsed = $send2(self, $find_super(self, 'parse', $DefaultConfig_parse$5, false, true), 'parse', $zuper, $iter);
-          rewriten = self.$rewrite(parsed);
+          parsed = ($truthy(($ret_or_1 = $send2(self, $find_super(self, 'parse', $$parse, false, true), 'parse', [source_buffer], $yield))) ? ($ret_or_1) : ($$$($$$($Opal, 'AST'), 'Node').$new("nil")));
+          wrapped = $$$($$$($Opal, 'AST'), 'Node').$new("top", [parsed]);
+          rewriten = self.$rewrite(wrapped);
           return rewriten;
-        }, $DefaultConfig_parse$5.$$arity = 1);
-        return (Opal.def(self, '$rewrite', $DefaultConfig_rewrite$6 = function $$rewrite(node) {
-          var self = this;
-
-          return $$$($$($nesting, 'Opal'), 'Rewriter').$new(node).$process()
-        }, $DefaultConfig_rewrite$6.$$arity = 1), nil) && 'rewrite';
+        }, 1);
+        return $def(self, '$rewrite', function $$rewrite(node) {
+          
+          return $$$($$('Opal'), 'Rewriter').$new(node).$process()
+        }, 1);
       })($nesting[0], $nesting);
       return (function(self, $parent_nesting) {
-        var $nesting = [self].concat($parent_nesting), $default_parser$7;
-
+        
         
         self.$attr_accessor("default_parser_class");
-        return (Opal.def(self, '$default_parser', $default_parser$7 = function $$default_parser() {
+        return $def(self, '$default_parser', function $$default_parser() {
           var self = this;
 
           return self.$default_parser_class().$default_parser()
-        }, $default_parser$7.$$arity = 0), nil) && 'default_parser';
+        }, 0);
       })(Opal.get_singleton_class(self), $nesting);
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/parser/with_ruby_lexer"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $send = Opal.send;
+Opal.modules["opal/parser/with_ruby_lexer"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus;
 
-  Opal.add_stubs(['$include', '$default_parser_class=', '$-']);
+  Opal.add_stubs('include,default_parser_class=,-');
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'WithRubyLexer');
 
-    var $nesting = [self].concat($parent_nesting), $writer = nil;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $writer = nil;
 
     
-    self.$include($$$($$$($$($nesting, 'Opal'), 'Parser'), 'DefaultConfig'));
+    self.$include($$$($$$($$('Opal'), 'Parser'), 'DefaultConfig'));
     
     $writer = [self];
-    $send($$$($$($nesting, 'Opal'), 'Parser'), 'default_parser_class=', Opal.to_a($writer));
+    $send($$$($$('Opal'), 'Parser'), 'default_parser_class=', $to_a($writer));
     return $writer[$rb_minus($writer["length"], 1)];;
-  })($$$($$($nesting, 'Opal'), 'Parser'), $$$($$($nesting, 'Parser'), 'Ruby30'), $nesting)
+  })($$$($$('Opal'), 'Parser'), $$$($$('Parser'), 'Ruby31'), $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/parser/patch"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send, $hash2 = Opal.hash2, $module = Opal.module;
+Opal.modules["opal/parser/patch"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $truthy = Opal.truthy, $def = Opal.def, $rb_plus = Opal.rb_plus, $send = Opal.send, $hash2 = Opal.hash2, $eqeqeq = Opal.eqeqeq, $eqeq = Opal.eqeq, $not = Opal.not, $rb_le = Opal.rb_le, $rb_minus = Opal.rb_minus, $rb_gt = Opal.rb_gt, $rb_times = Opal.rb_times, $rb_divide = Opal.rb_divide, $to_a = Opal.to_a, $module = Opal.module;
 
-  Opal.add_stubs(['$source', '$unpack', '$+', '$to_a', '$lines', '$end_with?', '$<<', '$map', '$chomp', '$=~', '$diagnostic', '$nil?', '$type', '$[]', '$respond_to?', '$[]=', '$-', '$send', '$value']);
+  Opal.add_stubs('source,unpack,+,to_a,lines,end_with?,<<,map,chomp,=~,diagnostic,nil?,new,===,type,updated,dedent,first,children,==,empty?,interrupt,compact,encoding,split,force_encoding,length,map!,each_with_index,!,each_char,<=,-,>,*,/,[],[]=,join,respond_to?,send,value');
   
   
-  (function($base, $super, $parent_nesting) {
+  (function($base, $super) {
     var self = $klass($base, $super, 'Lexer');
 
-    var $nesting = [self].concat($parent_nesting), $Lexer_source_buffer$eq$1;
+    var $proto = self.$$prototype;
 
-    self.$$prototype.source_buffer = nil;
-    return (Opal.def(self, '$source_buffer=', $Lexer_source_buffer$eq$1 = function(source_buffer) {
+    $proto.source_buffer = nil;
+    return $def(self, '$source_buffer=', function $Lexer_source_buffer$eq$1(source_buffer) {
       var self = this, source = nil;
 
       
@@ -30754,63 +27744,49 @@ Opal.modules["opal/parser/patch"] = function(Opal) {
       } else {
         return (self.source_pts = nil)
       };
-    }, $Lexer_source_buffer$eq$1.$$arity = 1), nil) && 'source_buffer='
-  })($$($nesting, 'Parser'), null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 1)
+  })($$('Parser'), null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'Literal');
 
-    var $nesting = [self].concat($parent_nesting), $Literal_extend_string$2;
+    var $proto = self.$$prototype;
 
-    self.$$prototype.buffer_s = self.$$prototype.buffer = nil;
+    $proto.buffer_s = $proto.buffer = nil;
     
     
     Opal.udef(self, '$' + "extend_string");;
-    return (Opal.def(self, '$extend_string', $Literal_extend_string$2 = function $$extend_string(string, ts, te) {
+    return $def(self, '$extend_string', function $$extend_string(string, ts, te) {
       var self = this, $ret_or_1 = nil;
 
       
-      self.buffer_s = (function() {if ($truthy(($ret_or_1 = self.buffer_s))) {
-        return $ret_or_1
-      } else {
-        return ts
-      }; return nil; })();
+      self.buffer_s = ($truthy(($ret_or_1 = self.buffer_s)) ? ($ret_or_1) : (ts));
       self.buffer_e = te;
       return (self.buffer = $rb_plus(self.buffer, string));
-    }, $Literal_extend_string$2.$$arity = 3), nil) && 'extend_string';
-  })($$$($$($nesting, 'Parser'), 'Lexer'), null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 3);
+  })($$$($$('Parser'), 'Lexer'), null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'Buffer');
 
-    var $nesting = [self].concat($parent_nesting), $Buffer_source_lines$3;
+    var $proto = self.$$prototype;
 
-    self.$$prototype.lines = self.$$prototype.source = nil;
-    return (Opal.def(self, '$source_lines', $Buffer_source_lines$3 = function $$source_lines() {
-      var $$4, self = this, $ret_or_2 = nil, lines = nil;
+    $proto.lines = $proto.source = nil;
+    return $def(self, '$source_lines', function $$source_lines() {
+      var self = this, $ret_or_1 = nil, lines = nil;
 
-      return (self.lines = (function() {if ($truthy(($ret_or_2 = self.lines))) {
-        return $ret_or_2
-      } else {
+      return (self.lines = ($truthy(($ret_or_1 = self.lines)) ? ($ret_or_1) : (((lines = self.source.$lines().$to_a()), ($truthy(self.source['$end_with?']("\n")) ? (lines['$<<']("")) : nil), $send(lines, 'map', [], function $$2(line){
         
-        lines = self.source.$lines().$to_a();
-        if ($truthy(self.source['$end_with?']("\n"))) {
-          lines['$<<']("")};
-        return $send(lines, 'map', [], ($$4 = function(line){var self = $$4.$$s == null ? this : $$4.$$s;
-
-          
-          
-          if (line == null) {
-            line = nil;
-          };
-          return line.$chomp("\n");}, $$4.$$s = self, $$4.$$arity = 1, $$4));
-      }; return nil; })())
-    }, $Buffer_source_lines$3.$$arity = 0), nil) && 'source_lines'
-  })($$$($$($nesting, 'Parser'), 'Source'), null, $nesting);
-  (function($base, $super, $parent_nesting) {
+        
+        if (line == null) line = nil;;
+        return line.$chomp("\n");}, 1)))))
+    }, 0)
+  })($$$($$('Parser'), 'Source'), null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'Default');
 
-    var $nesting = [self].concat($parent_nesting), $Default_check_lvar_name$5;
-
-    return (Opal.def(self, '$check_lvar_name', $Default_check_lvar_name$5 = function $$check_lvar_name(name, loc) {
+    
+    
+    
+    $def(self, '$check_lvar_name', function $$check_lvar_name(name, loc) {
       var self = this;
 
       if ($truthy(name['$=~'](new RegExp('^[\\p{Ll}|_][\\p{L}\\p{Nl}\\p{Nd}_]*$', 'u')))) {
@@ -30818,69 +27794,155 @@ Opal.modules["opal/parser/patch"] = function(Opal) {
       } else {
         return self.$diagnostic("error", "lvar_name", $hash2(["name"], {"name": name}), loc)
       }
-    }, $Default_check_lvar_name$5.$$arity = 2), nil) && 'check_lvar_name'
-  })($$$($$($nesting, 'Parser'), 'Builders'), null, $nesting);;
-  (function($base, $parent_nesting) {
-    var self = $module($base, 'Mixin');
+    }, 2);
+    return $def(self, '$dedent_string', function $$dedent_string(node, dedent_level) {
+      var dedenter = nil, $ret_or_1 = nil, children = nil;
+
+      
+      if (!$truthy(dedent_level['$nil?']())) {
+        
+        dedenter = $$$($$$($$$('Parser'), 'Lexer'), 'Dedenter').$new(dedent_level);
+        if ($eqeqeq("str", ($ret_or_1 = node.$type()))) {
+          node = node.$updated(nil, [dedenter.$dedent(node.$children().$first())])
+        } else if (($eqeqeq("dstr", $ret_or_1) || ($eqeqeq("xstr", $ret_or_1)))) {
+          
+          children = $send(node.$children(), 'map', [], function $$3(str_node){
+            
+            
+            if (str_node == null) str_node = nil;;
+            if ($eqeq(str_node.$type(), "str")) {
+              
+              str_node = str_node.$updated(nil, [dedenter.$dedent(str_node.$children().$first())]);
+              if ($truthy(str_node.$children().$first()['$empty?']())) {
+                return nil;
+              };
+            } else {
+              dedenter.$interrupt()
+            };
+            return str_node;}, 1);
+          node = node.$updated(nil, children.$compact());
+        } else {
+          nil
+        };
+      };
+      return node;
+    }, 2);
+  })($$$($$('Parser'), 'Builders'), null);
+  (function($base, $super, $parent_nesting) {
+    var self = $klass($base, $super, 'Dedenter');
 
-    var $nesting = [self].concat($parent_nesting), $Mixin_process$6;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+    return $def(self, '$dedent', function $$dedent(string) {
+      var self = this, original_encoding = nil, lines = nil;
+
+      
+      original_encoding = string.$encoding();
+      lines = string.$force_encoding($$$($$('Encoding'), 'BINARY')).$split("\\\n");
+      if ($eqeq(lines.$length(), 1)) {
+        lines = [string.$force_encoding(original_encoding)]
+      } else {
+        $send(lines, 'map!', [], function $$4(s){
+          
+          
+          if (s == null) s = nil;;
+          return s.$force_encoding(original_encoding);}, 1)
+      };
+      (function(){var $brk = Opal.new_brk(); try {return $send(lines, 'each_with_index', [], function $$5(line, index){var self = $$5.$$s == null ? this : $$5.$$s, left_to_remove = nil, remove = nil, $writer = nil;
+        if (self.at_line_begin == null) self.at_line_begin = nil;
+        if (self.dedent_level == null) self.dedent_level = nil;
+
+        
+        
+        if (line == null) line = nil;;
+        
+        if (index == null) index = nil;;
+        if (($eqeq(index, 0) && ($not(self.at_line_begin)))) {
+          return nil;
+        };
+        left_to_remove = self.dedent_level;
+        remove = 0;
+        (function(){var $brk = Opal.new_brk(); try {return $send(line, 'each_char', [], function $$6(char$){var self = $$6.$$s == null ? this : $$6.$$s, $ret_or_1 = nil;
+          if (self.dedent_level == null) self.dedent_level = nil;
+
+          
+          
+          if (char$ == null) char$ = nil;;
+          if ($truthy($rb_le(left_to_remove, 0))) {
+            
+            Opal.brk(nil, $brk)
+          };
+          if ($eqeqeq(" ", ($ret_or_1 = char$))) {
+            
+            remove = $rb_plus(remove, 1);
+            return (left_to_remove = $rb_minus(left_to_remove, 1));
+          } else if ($eqeqeq("\t", $ret_or_1)) {
+            
+            if ($truthy($rb_gt($rb_times($$('TAB_WIDTH'), $rb_plus($rb_divide(remove, $$('TAB_WIDTH')), 1)), self.dedent_level))) {
+              
+              Opal.brk(nil, $brk)
+            };
+            remove = $rb_plus(remove, 1);
+            return (left_to_remove = $rb_minus(left_to_remove, $$('TAB_WIDTH')));
+          } else {
+            
+            Opal.brk(nil, $brk)
+          };}, {$$arity: 1, $$s: self, $$brk: $brk})
+        } catch (err) { if (err === $brk) { return err.$v } else { throw err } }})();
+        
+        $writer = [index, line['$[]'](Opal.Range.$new(remove, -1, false))];
+        $send(lines, '[]=', $to_a($writer));
+        return $writer[$rb_minus($writer["length"], 1)];;}, {$$arity: 2, $$s: self, $$brk: $brk})
+      } catch (err) { if (err === $brk) { return err.$v } else { throw err } }})();
+      string = lines.$join();
+      self.at_line_begin = string['$end_with?']("\n");
+      return string;
+    }, 1)
+  })($$$($$('Parser'), 'Lexer'), null, $nesting);;
+  (function($base) {
+    var self = $module($base, 'Mixin');
 
     
     
+    
     Opal.udef(self, '$' + "process");;
-    return (Opal.def(self, '$process', $Mixin_process$6 = function $$process(node) {
-      var self = this, $ret_or_3 = nil, type = nil, on_handler = nil, $ret_or_4 = nil, $writer = nil, handler = nil, $ret_or_5 = nil;
+    return $def(self, '$process', function $$process(node) {
+      var self = this, $ret_or_1 = nil, type = nil, on_handler = nil, $writer = nil, handler = nil;
       if (self._on_handler_cache == null) self._on_handler_cache = nil;
 
       
       if ($truthy(node['$nil?']())) {
-        return nil};
-      self._on_handler_cache = (function() {if ($truthy(($ret_or_3 = self._on_handler_cache))) {
-        return $ret_or_3
-      } else {
-        return $hash2([], {})
-      }; return nil; })();
+        return nil
+      };
+      self._on_handler_cache = ($truthy(($ret_or_1 = self._on_handler_cache)) ? ($ret_or_1) : ($hash2([], {})));
       type = node.$type();
-      on_handler = (function() {if ($truthy(($ret_or_4 = self._on_handler_cache['$[]'](type)))) {
-        return $ret_or_4
-      } else {
-        
-        $writer = [type, ((handler = "" + "on_" + (type)), (function() {if ($truthy(self['$respond_to?'](handler))) {
-          return nil
-        } else {
-          return (handler = "handler_missing")
-        }; return nil; })(), handler)];
-        $send(self._on_handler_cache, '[]=', Opal.to_a($writer));
-        return $writer[$rb_minus($writer["length"], 1)];
-      }; return nil; })();
-      if ($truthy(($ret_or_5 = self.$send(on_handler, node)))) {
-        return $ret_or_5
+      on_handler = ($truthy(($ret_or_1 = self._on_handler_cache['$[]'](type))) ? ($ret_or_1) : ((($writer = [type, ((handler = "on_" + (type)), ($truthy(self['$respond_to?'](handler)) ? (nil) : ((handler = "handler_missing"))), handler)]), $send(self._on_handler_cache, '[]=', $to_a($writer)), $writer[$rb_minus($writer["length"], 1)])));
+      if ($truthy(($ret_or_1 = self.$send(on_handler, node)))) {
+        return $ret_or_1
       } else {
         return node
       };
-    }, $Mixin_process$6.$$arity = 1), nil) && 'process';
-  })($$$($$($nesting, 'AST'), 'Processor'), $nesting);
-  return (function($base, $super, $parent_nesting) {
+    }, 1);
+  })($$$($$('AST'), 'Processor'));
+  return (function($base, $super) {
     var self = $klass($base, $super, 'Default');
 
-    var $nesting = [self].concat($parent_nesting), $Default_string_value$7;
-
+    
     
     
     Opal.udef(self, '$' + "string_value");;
-    return (Opal.def(self, '$string_value', $Default_string_value$7 = function $$string_value(token) {
+    return $def(self, '$string_value', function $$string_value(token) {
       var self = this;
 
       return self.$value(token)
-    }, $Default_string_value$7.$$arity = 1), nil) && 'string_value';
-  })($$$($$($nesting, 'Parser'), 'Builders'), null, $nesting);
+    }, 1);
+  })($$$($$('Parser'), 'Builders'), null);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/parser"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$;
+Opal.modules["opal/parser"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, nil = Opal.nil;
 
-  Opal.add_stubs(['$require']);
+  Opal.add_stubs('require');
   
   self.$require("opal/ast/builder");
   self.$require("opal/rewriter");
@@ -30890,11 +27952,10 @@ Opal.modules["opal/parser"] = function(Opal) {
   return self.$require("opal/parser/patch");
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/fragment"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy;
+Opal.modules["opal/fragment"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $def = Opal.def, $eqeqeq = Opal.eqeqeq, $truthy = Opal.truthy, $eqeq = Opal.eqeq, $rb_plus = Opal.rb_plus, $rb_gt = Opal.rb_gt, $to_a = Opal.to_a, $not = Opal.not, $send = Opal.send;
 
-  Opal.add_stubs(['$attr_reader', '$to_s', '$inspect', '$type', '$===', '$first', '$children', '$[]', '$line', '$column']);
+  Opal.add_stubs('attr_reader,to_s,inspect,===,type,[],meta,source_map_name_for,sexp,==,class,+,parent,>,!,first,children,loc,respond_to?,dot,selector,operator,begin,line,location,column');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Opal');
 
@@ -30903,77 +27964,164 @@ Opal.modules["opal/fragment"] = function(Opal) {
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Fragment');
 
-      var $nesting = [self].concat($parent_nesting), $Fragment_initialize$1, $Fragment_inspect$2, $Fragment_source_map_name$3, $Fragment_line$4, $Fragment_column$5;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.code = self.$$prototype.sexp = nil;
+      $proto.code = $proto.scope = $proto.sexp = nil;
       
       self.$attr_reader("code");
       
-      Opal.def(self, '$initialize', $Fragment_initialize$1 = function $$initialize(code, scope, sexp) {
+      $def(self, '$initialize', function $$initialize(code, scope, sexp) {
         var self = this;
 
         
         
-        if (sexp == null) {
-          sexp = nil;
-        };
+        if (sexp == null) sexp = nil;;
         self.code = code.$to_s();
         self.sexp = sexp;
         return (self.scope = scope);
-      }, $Fragment_initialize$1.$$arity = -3);
+      }, -3);
+      
+      $def(self, '$inspect', function $$inspect() {
+        var self = this;
+
+        return "f(" + (self.code.$inspect()) + ")"
+      }, 0);
       
-      Opal.def(self, '$inspect', $Fragment_inspect$2 = function $$inspect() {
+      $def(self, '$source_map_name_for', function $$source_map_name_for(sexp) {
+        var $a, self = this, $ret_or_1 = nil, $ret_or_2 = nil, scope = nil, iters = nil, level = nil, const$ = nil, name = nil;
+
+        if ($eqeqeq("top", ($ret_or_1 = sexp.$type()))) {
+          if ($eqeqeq("require", ($ret_or_2 = sexp.$meta()['$[]']("kind")))) {
+            return "<top (required)>"
+          } else if ($eqeqeq("eval", $ret_or_2)) {
+            return "(eval)"
+          } else if ($eqeqeq("main", $ret_or_2)) {
+            return "<main>"
+          } else {
+            return nil
+          }
+        } else if (($eqeqeq("begin", $ret_or_1) || (($eqeqeq("newline", $ret_or_1) || ($eqeqeq("js_return", $ret_or_1)))))) {
+          if ($truthy(self.scope)) {
+            return self.$source_map_name_for(self.scope.$sexp())
+          } else {
+            return nil
+          }
+        } else if ($eqeqeq("iter", $ret_or_1)) {
+          
+          scope = self.scope;
+          iters = 1;
+          while ($truthy(scope)) {
+            if ($eqeq(scope.$class(), $$$($$('Nodes'), 'IterNode'))) {
+              
+              iters = $rb_plus(iters, 1);
+              scope = scope.$parent();
+            } else {
+              break;
+            }
+          };
+          if ($truthy($rb_gt(iters, 1))) {
+            level = " (" + (iters) + " levels)"
+          };
+          return "block" + (level) + " in " + (self.$source_map_name_for(scope.$sexp()));
+        } else if ($eqeqeq("self", $ret_or_1)) {
+          return "self"
+        } else if ($eqeqeq("module", $ret_or_1)) {
+          
+          $a = [].concat($to_a(sexp)), (const$ = ($a[0] == null ? nil : $a[0])), $a;
+          return "<module:" + (self.$source_map_name_for(const$)) + ">";
+        } else if ($eqeqeq("class", $ret_or_1)) {
+          
+          $a = [].concat($to_a(sexp)), (const$ = ($a[0] == null ? nil : $a[0])), $a;
+          return "<class:" + (self.$source_map_name_for(const$)) + ">";
+        } else if ($eqeqeq("const", $ret_or_1)) {
+          
+          $a = [].concat($to_a(sexp)), (scope = ($a[0] == null ? nil : $a[0])), (name = ($a[1] == null ? nil : $a[1])), $a;
+          if (($not(scope) || ($eqeq(scope.$type(), "cbase")))) {
+            return name.$to_s()
+          } else {
+            return "" + (self.$source_map_name_for(scope)) + "::" + (name)
+          };
+        } else if ($eqeqeq("int", $ret_or_1)) {
+          return sexp.$children().$first()
+        } else if ($eqeqeq("def", $ret_or_1)) {
+          return sexp.$children().$first()
+        } else if ($eqeqeq("defs", $ret_or_1)) {
+          return sexp.$children()['$[]'](1)
+        } else if ($eqeqeq("send", $ret_or_1)) {
+          return sexp.$children()['$[]'](1)
+        } else if (($eqeqeq("lvar", $ret_or_1) || (($eqeqeq("lvasgn", $ret_or_1) || (($eqeqeq("lvdeclare", $ret_or_1) || (($eqeqeq("ivar", $ret_or_1) || (($eqeqeq("ivasgn", $ret_or_1) || (($eqeqeq("gvar", $ret_or_1) || (($eqeqeq("cvar", $ret_or_1) || (($eqeqeq("cvasgn", $ret_or_1) || (($eqeqeq("gvars", $ret_or_1) || (($eqeqeq("gvasgn", $ret_or_1) || ($eqeqeq("arg", $ret_or_1)))))))))))))))))))))) {
+          return sexp.$children().$first()
+        } else if (($eqeqeq("str", $ret_or_1) || ($eqeqeq("xstr", $ret_or_1)))) {
+          return self.$source_map_name_for(self.scope.$sexp())
+        } else {
+          return nil
+        }
+      }, 1);
+      
+      $def(self, '$source_map_name', function $$source_map_name() {
         var self = this;
 
-        return "" + "f(" + (self.code.$inspect()) + ")"
-      }, $Fragment_inspect$2.$$arity = 0);
+        
+        if (!$truthy(self.sexp)) {
+          return nil
+        };
+        return self.$source_map_name_for(self.sexp);
+      }, 0);
+      
+      $def(self, '$location', function $$location() {
+        var self = this, loc = nil, $ret_or_1 = nil;
+
+        if ($not(self.sexp)) {
+          return nil
+        } else if ($eqeq(self.sexp.$type(), "send")) {
+          
+          loc = self.sexp.$loc();
+          if ($truthy(loc['$respond_to?']("dot"))) {
+            if ($truthy(($ret_or_1 = loc.$dot()))) {
+              return $ret_or_1
+            } else {
+              return loc.$selector()
+            }
+          } else if ($truthy(loc['$respond_to?']("operator"))) {
+            return loc.$operator()
+          } else {
+            return self.sexp
+          };
+        } else if ($eqeq(self.sexp.$type(), "iter")) {
+          if ($truthy(loc['$respond_to?']("begin"))) {
+            return self.sexp.$loc().$begin()
+          } else {
+            return self.sexp
+          }
+        } else {
+          return self.sexp
+        }
+      }, 0);
       
-      Opal.def(self, '$source_map_name', $Fragment_source_map_name$3 = function $$source_map_name() {
-        var self = this, $case = nil;
+      $def(self, '$line', function $$line() {
+        var $a, self = this;
 
-        return (function() {$case = self.sexp.$type();
-        if ("top"['$===']($case) || "begin"['$===']($case) || "newline"['$===']($case) || "js_return"['$===']($case)) {return nil}
-        else if ("self"['$===']($case)) {return "self"}
-        else if ("module"['$===']($case)) {return "module"}
-        else if ("class"['$===']($case)) {return "class"}
-        else if ("int"['$===']($case)) {return self.sexp.$children().$first()}
-        else if ("def"['$===']($case)) {return self.sexp.$children().$first()}
-        else if ("defs"['$===']($case)) {return self.sexp.$children()['$[]'](1)}
-        else if ("send"['$===']($case)) {return self.sexp.$children()['$[]'](1)}
-        else if ("lvar"['$===']($case) || "lvasgn"['$===']($case) || "lvdeclare"['$===']($case) || "ivar"['$===']($case) || "ivasgn"['$===']($case) || "gvar"['$===']($case) || "cvar"['$===']($case) || "cvasgn"['$===']($case) || "gvars"['$===']($case) || "gvasgn"['$===']($case)) {return self.sexp.$children().$first()}
-        else { return nil }})()
-      }, $Fragment_source_map_name$3.$$arity = 0);
+        return ($a = self.$location(), ($a === nil || $a == null) ? nil : $send($a, 'line', []))
+      }, 0);
       
-      Opal.def(self, '$line', $Fragment_line$4 = function $$line() {
-        var self = this;
+      $def(self, '$column', function $$column() {
+        var $a, self = this;
 
-        if ($truthy(self.sexp)) {
-          return self.sexp.$line()
-        } else {
-          return nil
-        }
-      }, $Fragment_line$4.$$arity = 0);
-      return (Opal.def(self, '$column', $Fragment_column$5 = function $$column() {
+        return ($a = self.$location(), ($a === nil || $a == null) ? nil : $send($a, 'column', []))
+      }, 0);
+      return $def(self, '$skip_source_map?', function $Fragment_skip_source_map$ques$1() {
         var self = this;
 
-        if ($truthy(self.sexp)) {
-          return self.sexp.$column()
-        } else {
-          return nil
-        }
-      }, $Fragment_column$5.$$arity = 0), nil) && 'column';
+        return self.sexp['$=='](false)
+      }, 0);
     })($nesting[0], null, $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/helpers"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $truthy = Opal.truthy, $send = Opal.send;
+Opal.modules["opal/nodes/helpers"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $truthy = Opal.truthy, $def = Opal.def, $rb_plus = Opal.rb_plus, $send = Opal.send, $hash2 = Opal.hash2, $to_a = Opal.to_a, $eqeqeq = Opal.eqeqeq, $slice = Opal.slice, $eqeq = Opal.eqeq, $rb_minus = Opal.rb_minus;
 
-  Opal.add_stubs(['$require', '$valid_name?', '$inspect', '$=~', '$to_s', '$+', '$indent', '$compiler', '$to_proc', '$parser_indent', '$push', '$current_indent', '$js_truthy_optimize', '$helper', '$fragment', '$expr', '$==', '$type', '$[]', '$children', '$uses_block!', '$scope', '$block_name', '$handlers', '$include?', '$truthy_optimize?', '$new_temp', '$wrap']);
+  Opal.add_stubs('require,valid_name?,inspect,=~,to_s,+,indent,compiler,to_proc,parser_indent,push,fragment,current_indent,js_truthy_optimize,helper,expr,===,type,[],handlers,include?,truthy_optimize?,==,count,<<,method_calls,first,children,s,[]=,meta,-,new_temp,scope,wrap');
   
   self.$require("opal/regexp_anchors");
   return (function($base, $parent_nesting) {
@@ -30989,159 +28137,169 @@ Opal.modules["opal/nodes/helpers"] = function(Opal) {
       return (function($base, $parent_nesting) {
         var self = $module($base, 'Helpers');
 
-        var $nesting = [self].concat($parent_nesting), $Helpers_property$1, $Helpers_valid_name$ques$2, $Helpers_mid_to_jsid$3, $Helpers_indent$4, $Helpers_current_indent$5, $Helpers_line$6, $Helpers_empty_line$7, $Helpers_js_truthy$8, $Helpers_js_falsy$9, $Helpers_js_truthy_optimize$10, $Helpers_conditional_send$11;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
         
         
-        Opal.def(self, '$property', $Helpers_property$1 = function $$property(name) {
+        $def(self, '$property', function $$property(name) {
           var self = this;
 
           if ($truthy(self['$valid_name?'](name))) {
-            return "" + "." + (name)
+            return "." + (name)
           } else {
-            return "" + "[" + (name.$inspect()) + "]"
+            return "[" + (name.$inspect()) + "]"
           }
-        }, $Helpers_property$1.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$valid_name?', $Helpers_valid_name$ques$2 = function(name) {
-          var self = this;
-
-          return $$$($$$($$($nesting, 'Opal'), 'Rewriters'), 'JsReservedWords')['$valid_name?'](name)
-        }, $Helpers_valid_name$ques$2.$$arity = 1);
+        $def(self, '$valid_name?', function $Helpers_valid_name$ques$1(name) {
+          
+          return $$$($$$($$('Opal'), 'Rewriters'), 'JsReservedWords')['$valid_name?'](name)
+        }, 1);
         
-        Opal.def(self, '$mid_to_jsid', $Helpers_mid_to_jsid$3 = function $$mid_to_jsid(mid) {
-          var self = this;
-
-          if ($truthy(/\=|\+|\-|\*|\/|\!|\?|<|\>|\&|\||\^|\%|\~|\[/['$=~'](mid.$to_s()))) {
-            return "" + "['$" + (mid) + "']"
+        $def(self, '$mid_to_jsid', function $$mid_to_jsid(mid) {
+          
+          if ($truthy(/\=|\+|\-|\*|\/|\!|\?|<|\>|\&|\||\^|\%|\~|\[|`/['$=~'](mid.$to_s()))) {
+            return "['$" + (mid) + "']"
           } else {
             return $rb_plus(".$", mid)
           }
-        }, $Helpers_mid_to_jsid$3.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$indent', $Helpers_indent$4 = function $$indent() {
-          var $iter = $Helpers_indent$4.$$p, block = $iter || nil, self = this;
+        $def(self, '$indent', function $$indent() {
+          var block = $$indent.$$p || nil, self = this;
 
-          if ($iter) $Helpers_indent$4.$$p = null;
+          delete $$indent.$$p;
           
-          
-          if ($iter) $Helpers_indent$4.$$p = null;;
+          ;
           return $send(self.$compiler(), 'indent', [], block.$to_proc());
-        }, $Helpers_indent$4.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$current_indent', $Helpers_current_indent$5 = function $$current_indent() {
+        $def(self, '$current_indent', function $$current_indent() {
           var self = this;
 
           return self.$compiler().$parser_indent()
-        }, $Helpers_current_indent$5.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$line', $Helpers_line$6 = function $$line($a) {
+        $def(self, '$line', function $$line($a) {
           var $post_args, strs, self = this;
 
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
           strs = $post_args;;
-          self.$push("" + "\n" + (self.$current_indent()));
-          return $send(self, 'push', Opal.to_a(strs));
-        }, $Helpers_line$6.$$arity = -1);
+          self.$push(self.$fragment("\n" + (self.$current_indent()), $hash2(["loc"], {"loc": false})));
+          return $send(self, 'push', $to_a(strs));
+        }, -1);
         
-        Opal.def(self, '$empty_line', $Helpers_empty_line$7 = function $$empty_line() {
+        $def(self, '$empty_line', function $$empty_line() {
           var self = this;
 
-          return self.$push("\n")
-        }, $Helpers_empty_line$7.$$arity = 0);
+          return self.$push(self.$fragment("\n", $hash2(["loc"], {"loc": false})))
+        }, 0);
         
-        Opal.def(self, '$js_truthy', $Helpers_js_truthy$8 = function $$js_truthy(sexp) {
+        $def(self, '$js_truthy', function $$js_truthy(sexp) {
           var self = this, optimize = nil;
 
           
           if ($truthy((optimize = self.$js_truthy_optimize(sexp)))) {
-            return optimize};
+            return optimize
+          };
           self.$helper("truthy");
           return [self.$fragment("$truthy("), self.$expr(sexp), self.$fragment(")")];
-        }, $Helpers_js_truthy$8.$$arity = 1);
-        
-        Opal.def(self, '$js_falsy', $Helpers_js_falsy$9 = function $$js_falsy(sexp) {
-          var self = this, mid = nil;
-
-          
-          if (sexp.$type()['$==']("send")) {
-            
-            mid = sexp.$children()['$[]'](1);
-            if (mid['$==']("block_given?")) {
-              
-              self.$scope()['$uses_block!']();
-              return "" + (self.$scope().$block_name()) + " === nil";};};
-          self.$helper("falsy");
-          return [self.$fragment("$falsy("), self.$expr(sexp), self.$fragment(")")];
-        }, $Helpers_js_falsy$9.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$js_truthy_optimize', $Helpers_js_truthy_optimize$10 = function $$js_truthy_optimize(sexp) {
-          var self = this, mid = nil, receiver_handler_class = nil, $ret_or_1 = nil, receiver = nil, allow_optimization_on_type = nil, $ret_or_2 = nil, $ret_or_3 = nil, $ret_or_4 = nil, $ret_or_5 = nil;
+        $def(self, '$js_truthy_optimize', function $$js_truthy_optimize(sexp) {
+          var $a, self = this, $ret_or_1 = nil, receiver = nil, mid = nil, args = nil, receiver_handler_class = nil, $ret_or_2 = nil, allow_optimization_on_type = nil, $ret_or_3 = nil, _test = nil, true_body = nil, false_body = nil, $writer = nil;
 
-          if (sexp.$type()['$==']("send")) {
+          if ($eqeqeq("send", ($ret_or_1 = sexp.$type()))) {
             
-            mid = sexp.$children()['$[]'](1);
-            receiver_handler_class = (function() {if ($truthy(($ret_or_1 = (receiver = sexp.$children()['$[]'](0))))) {
-              return self.$compiler().$handlers()['$[]'](receiver.$type())
-            } else {
-              return $ret_or_1
-            }; return nil; })();
-            allow_optimization_on_type = (function() {if ($truthy(($ret_or_2 = (function() {if ($truthy(($ret_or_3 = $$$($$($nesting, 'Compiler'), 'COMPARE')['$include?'](mid.$to_s())))) {
-              return receiver_handler_class
-            } else {
-              return $ret_or_3
-            }; return nil; })()))) {
-              return receiver_handler_class['$truthy_optimize?']()
-            } else {
-              return $ret_or_2
-            }; return nil; })();
-            if ($truthy((function() {if ($truthy(($ret_or_4 = (function() {if ($truthy(($ret_or_5 = allow_optimization_on_type))) {
-              return $ret_or_5
+            $a = [].concat($to_a(sexp)), (receiver = ($a[0] == null ? nil : $a[0])), (mid = ($a[1] == null ? nil : $a[1])), (args = $slice.call($a, 2)), $a;
+            receiver_handler_class = ($truthy(($ret_or_2 = receiver)) ? (self.$compiler().$handlers()['$[]'](receiver.$type())) : ($ret_or_2));
+            allow_optimization_on_type = ($truthy(($ret_or_2 = ($truthy(($ret_or_3 = $$$($$('Compiler'), 'COMPARE')['$include?'](mid.$to_s()))) ? (receiver_handler_class) : ($ret_or_3)))) ? (receiver_handler_class['$truthy_optimize?']()) : ($ret_or_2));
+            if (($truthy(allow_optimization_on_type) || ($eqeq(mid, "block_given?")))) {
+              return self.$expr(sexp)
+            } else if ($eqeq(args.$count(), 1)) {
+              if ($eqeqeq("==", ($ret_or_2 = mid))) {
+                
+                self.$helper("eqeq");
+                self.$compiler().$method_calls()['$<<'](mid);
+                return [self.$fragment("$eqeq("), self.$expr(receiver), self.$fragment(", "), self.$expr(args.$first()), self.$fragment(")")];
+              } else if ($eqeqeq("===", $ret_or_2)) {
+                
+                self.$helper("eqeqeq");
+                self.$compiler().$method_calls()['$<<'](mid);
+                return [self.$fragment("$eqeqeq("), self.$expr(receiver), self.$fragment(", "), self.$expr(args.$first()), self.$fragment(")")];
+              } else if ($eqeqeq("!=", $ret_or_2)) {
+                
+                self.$helper("neqeq");
+                self.$compiler().$method_calls()['$<<'](mid);
+                return [self.$fragment("$neqeq("), self.$expr(receiver), self.$fragment(", "), self.$expr(args.$first()), self.$fragment(")")];
+              } else {
+                return nil
+              }
+            } else if ($eqeq(args.$count(), 0)) {
+              if ($eqeqeq("!", ($ret_or_2 = mid))) {
+                
+                self.$helper("not");
+                self.$compiler().$method_calls()['$<<'](mid);
+                return [self.$fragment("$not("), self.$expr(receiver), self.$fragment(")")];
+              } else {
+                return nil
+              }
             } else {
-              return mid['$==']("block_given?")
-            }; return nil; })()))) {
-              return $ret_or_4
+              return nil
+            };
+          } else if ($eqeqeq("begin", $ret_or_1)) {
+            if ($eqeq(sexp.$children().$count(), 1)) {
+              return self.$js_truthy_optimize(sexp.$children().$first())
             } else {
-              return mid['$==']("==")
-            }; return nil; })())) {
-              return self.$expr(sexp)
+              return nil
+            }
+          } else if ($eqeqeq("if", $ret_or_1)) {
+            
+            $a = [].concat($to_a(sexp)), (_test = ($a[0] == null ? nil : $a[0])), (true_body = ($a[1] == null ? nil : $a[1])), (false_body = ($a[2] == null ? nil : $a[2])), $a;
+            if ($eqeq(true_body, self.$s("true"))) {
+              
+              
+              $writer = ["do_js_truthy_on_false_body", true];
+              $send(sexp.$meta(), '[]=', $to_a($writer));
+              $writer[$rb_minus($writer["length"], 1)];;
+              return self.$expr(sexp);
+            } else if ($eqeq(false_body, self.$s("false"))) {
+              
+              
+              $writer = ["do_js_truthy_on_true_body", true];
+              $send(sexp.$meta(), '[]=', $to_a($writer));
+              $writer[$rb_minus($writer["length"], 1)];;
+              return self.$expr(sexp);
             } else {
               return nil
             };
           } else {
             return nil
           }
-        }, $Helpers_js_truthy_optimize$10.$$arity = 1);
-        return (Opal.def(self, '$conditional_send', $Helpers_conditional_send$11 = function $$conditional_send(recvr) {
-          var $iter = $Helpers_conditional_send$11.$$p, $yield = $iter || nil, self = this, receiver_temp = nil;
+        }, 1);
+        return $def(self, '$conditional_send', function $$conditional_send(recvr) {
+          var $yield = $$conditional_send.$$p || nil, self = this, receiver_temp = nil;
 
-          if ($iter) $Helpers_conditional_send$11.$$p = null;
+          delete $$conditional_send.$$p;
           
           receiver_temp = self.$scope().$new_temp();
           self.$push("" + (receiver_temp) + " = ", recvr);
-          self.$push("" + ", (" + (receiver_temp) + " === nil || " + (receiver_temp) + " == null) ? nil : ");
+          self.$push(", (" + (receiver_temp) + " === nil || " + (receiver_temp) + " == null) ? nil : ");
           Opal.yield1($yield, receiver_temp);
           return self.$wrap("(", ")");
-        }, $Helpers_conditional_send$11.$$arity = 1), nil) && 'conditional_send';
+        }, 1);
       })($nesting[0], $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/base"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $hash2 = Opal.hash2, $send = Opal.send;
+Opal.modules["opal/nodes/base"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $hash2 = Opal.hash2, $defs = Opal.defs, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $def = Opal.def, $Opal = Opal.Opal, $rb_plus = Opal.rb_plus;
 
-  Opal.add_stubs(['$require', '$include', '$each', '$[]=', '$handlers', '$-', '$each_with_index', '$define_method', '$[]', '$children', '$attr_reader', '$type', '$compile', '$raise', '$is_a?', '$fragment', '$<<', '$reverse_each', '$unshift', '$push', '$new', '$scope', '$error', '$top_scope', '$s', '$==', '$process', '$expr', '$add_scope_local', '$to_sym', '$add_scope_ivar', '$add_scope_gvar', '$add_scope_temp', '$helper', '$with_temp', '$to_proc', '$in_while?', '$instance_variable_get', '$has_rescue_else?', '$in_ensure', '$in_ensure?', '$in_resbody', '$in_resbody?', '$in_rescue', '$!', '$class_scope?', '$sclass?', '$+', '$parent', '$class_variable_owner_nesting_level', '$comments', '$compiler', '$loc', '$name', '$source_buffer', '$expression', '$start_with?', '$end_with?', '$line']);
+  Opal.add_stubs('require,include,each,[]=,handlers,-,each_with_index,define_method,[],children,attr_reader,type,top_scope,top_scope=,compile,raise,is_a?,fragment,<<,reverse_each,unshift,push,new,scope,error,loc,==,process,expr,add_scope_local,to_sym,add_scope_ivar,add_scope_gvar,add_scope_temp,helper,with_temp,to_proc,in_while?,instance_variable_get,has_rescue_else?,in_ensure,in_ensure?,in_resbody,in_resbody?,in_rescue,!,class_scope?,sclass?,+,parent,nesting,class_variable_owner_nesting_level,comments,compiler,name,source_buffer,expression,start_with?,end_with?,line');
   
   self.$require("opal/nodes/helpers");
   return (function($base, $parent_nesting) {
@@ -31157,237 +28315,241 @@ Opal.modules["opal/nodes/base"] = function(Opal) {
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'Base');
 
-        var $nesting = [self].concat($parent_nesting), $Base_handlers$1, $Base_handle$2, $Base_children$4, $Base_truthy_optimize$ques$7, $Base_initialize$8, $Base_children$9, $Base_compile_to_fragments$10, $Base_compile$11, $Base_push$12, $Base_unshift$14, $Base_wrap$16, $Base_fragment$17, $Base_error$18, $Base_scope$19, $Base_top_scope$20, $Base_s$21, $Base_expr$ques$22, $Base_recv$ques$23, $Base_stmt$ques$24, $Base_process$25, $Base_expr$26, $Base_recv$27, $Base_stmt$28, $Base_expr_or_nil$29, $Base_add_local$30, $Base_add_ivar$31, $Base_add_gvar$32, $Base_add_temp$33, $Base_helper$34, $Base_with_temp$35, $Base_in_while$ques$36, $Base_while_loop$37, $Base_has_rescue_else$ques$38, $Base_in_ensure$39, $Base_in_ensure$ques$40, $Base_in_resbody$41, $Base_in_resbody$ques$42, $Base_in_rescue$43, $Base_class_variable_owner_nesting_level$44, $Base_class_variable_owner$45, $Base_comments$46, $Base_source_location$47;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.sexp = self.$$prototype.fragments = self.$$prototype.compiler = self.$$prototype.level = nil;
+        $proto.compiler = $proto.sexp = $proto.fragments = $proto.level = nil;
         
-        self.$include($$($nesting, 'Helpers'));
-        Opal.defs(self, '$handlers', $Base_handlers$1 = function $$handlers() {
+        self.$include($$('Helpers'));
+        $defs(self, '$handlers', function $$handlers() {
           var self = this, $ret_or_1 = nil;
           if (self.handlers == null) self.handlers = nil;
 
-          return (self.handlers = (function() {if ($truthy(($ret_or_1 = self.handlers))) {
-            return $ret_or_1
-          } else {
-            return $hash2([], {})
-          }; return nil; })())
-        }, $Base_handlers$1.$$arity = 0);
-        Opal.defs(self, '$handle', $Base_handle$2 = function $$handle($a) {
-          var $post_args, types, $$3, self = this;
+          return (self.handlers = ($truthy(($ret_or_1 = self.handlers)) ? ($ret_or_1) : ($hash2([], {}))))
+        }, 0);
+        $defs(self, '$handle', function $$handle($a) {
+          var $post_args, types, self = this;
 
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
           types = $post_args;;
-          return $send(types, 'each', [], ($$3 = function(type){var self = $$3.$$s == null ? this : $$3.$$s, $writer = nil;
+          return $send(types, 'each', [], function $$1(type){var self = $$1.$$s == null ? this : $$1.$$s, $writer = nil;
 
             
             
-            if (type == null) {
-              type = nil;
-            };
+            if (type == null) type = nil;;
             $writer = [type, self];
-            $send($$($nesting, 'Base').$handlers(), '[]=', Opal.to_a($writer));
-            return $writer[$rb_minus($writer["length"], 1)];}, $$3.$$s = self, $$3.$$arity = 1, $$3));
-        }, $Base_handle$2.$$arity = -1);
-        Opal.defs(self, '$children', $Base_children$4 = function $$children($a) {
-          var $post_args, names, $$5, self = this;
+            $send($$('Base').$handlers(), '[]=', $to_a($writer));
+            return $writer[$rb_minus($writer["length"], 1)];}, {$$arity: 1, $$s: self});
+        }, -1);
+        $defs(self, '$children', function $$children($a) {
+          var $post_args, names, self = this;
 
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
           names = $post_args;;
-          return $send(names, 'each_with_index', [], ($$5 = function(name, idx){var self = $$5.$$s == null ? this : $$5.$$s, $$6;
+          return $send(names, 'each_with_index', [], function $$2(name, idx){var self = $$2.$$s == null ? this : $$2.$$s;
 
             
             
-            if (name == null) {
-              name = nil;
-            };
+            if (name == null) name = nil;;
             
-            if (idx == null) {
-              idx = nil;
-            };
-            return $send(self, 'define_method', [name], ($$6 = function(){var self = $$6.$$s == null ? this : $$6.$$s;
+            if (idx == null) idx = nil;;
+            return $send(self, 'define_method', [name], function $$3(){var self = $$3.$$s == null ? this : $$3.$$s;
               if (self.sexp == null) self.sexp = nil;
 
-              return self.sexp.$children()['$[]'](idx)}, $$6.$$s = self, $$6.$$arity = 0, $$6));}, $$5.$$s = self, $$5.$$arity = 2, $$5));
-        }, $Base_children$4.$$arity = -1);
-        Opal.defs(self, '$truthy_optimize?', $Base_truthy_optimize$ques$7 = function() {
-          var self = this;
-
+              return self.sexp.$children()['$[]'](idx)}, {$$arity: 0, $$s: self});}, {$$arity: 2, $$s: self});
+        }, -1);
+        $defs(self, '$truthy_optimize?', function $Base_truthy_optimize$ques$4() {
+          
           return false
-        }, $Base_truthy_optimize$ques$7.$$arity = 0);
-        self.$attr_reader("compiler", "type");
+        }, 0);
+        self.$attr_reader("compiler", "type", "sexp");
         
-        Opal.def(self, '$initialize', $Base_initialize$8 = function $$initialize(sexp, level, compiler) {
-          var self = this;
+        $def(self, '$initialize', function $$initialize(sexp, level, compiler) {
+          var self = this, $ret_or_1 = nil, $writer = nil;
 
           
           self.sexp = sexp;
           self.type = sexp.$type();
           self.level = level;
-          return (self.compiler = compiler);
-        }, $Base_initialize$8.$$arity = 3);
+          self.compiler = compiler;
+          if ($truthy(($ret_or_1 = self.compiler.$top_scope()))) {
+            return $ret_or_1
+          } else {
+            
+            $writer = [self];
+            $send(self.compiler, 'top_scope=', $to_a($writer));
+            return $writer[$rb_minus($writer["length"], 1)];
+          };
+        }, 3);
         
-        Opal.def(self, '$children', $Base_children$9 = function $$children() {
+        $def(self, '$children', function $$children() {
           var self = this;
 
           return self.sexp.$children()
-        }, $Base_children$9.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_to_fragments', $Base_compile_to_fragments$10 = function $$compile_to_fragments() {
+        $def(self, '$compile_to_fragments', function $$compile_to_fragments() {
           var $a, self = this;
 
           
           if ($truthy((($a = self['fragments'], $a != null && $a !== nil) ? 'instance-variable' : nil))) {
-            return self.fragments};
+            return self.fragments
+          };
           self.fragments = [];
           self.$compile();
           return self.fragments;
-        }, $Base_compile_to_fragments$10.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile', $Base_compile$11 = function $$compile() {
+        $def(self, '$compile', function $$compile() {
           var self = this;
 
           return self.$raise("Not Implemented")
-        }, $Base_compile$11.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$push', $Base_push$12 = function $$push($a) {
-          var $post_args, strs, $$13, self = this;
+        $def(self, '$push', function $$push($a) {
+          var $post_args, strs, self = this;
 
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
           strs = $post_args;;
-          return $send(strs, 'each', [], ($$13 = function(str){var self = $$13.$$s == null ? this : $$13.$$s;
+          return $send(strs, 'each', [], function $$5(str){var self = $$5.$$s == null ? this : $$5.$$s;
             if (self.fragments == null) self.fragments = nil;
 
             
             
-            if (str == null) {
-              str = nil;
+            if (str == null) str = nil;;
+            if ($truthy(str['$is_a?']($$('String')))) {
+              str = self.$fragment(str)
             };
-            if ($truthy(str['$is_a?']($$($nesting, 'String')))) {
-              str = self.$fragment(str)};
-            return self.fragments['$<<'](str);}, $$13.$$s = self, $$13.$$arity = 1, $$13));
-        }, $Base_push$12.$$arity = -1);
+            return self.fragments['$<<'](str);}, {$$arity: 1, $$s: self});
+        }, -1);
         
-        Opal.def(self, '$unshift', $Base_unshift$14 = function $$unshift($a) {
-          var $post_args, strs, $$15, self = this;
+        $def(self, '$unshift', function $$unshift($a) {
+          var $post_args, strs, self = this;
 
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
           strs = $post_args;;
-          return $send(strs, 'reverse_each', [], ($$15 = function(str){var self = $$15.$$s == null ? this : $$15.$$s;
+          return $send(strs, 'reverse_each', [], function $$6(str){var self = $$6.$$s == null ? this : $$6.$$s;
             if (self.fragments == null) self.fragments = nil;
 
             
             
-            if (str == null) {
-              str = nil;
+            if (str == null) str = nil;;
+            if ($truthy(str['$is_a?']($$('String')))) {
+              str = self.$fragment(str)
             };
-            if ($truthy(str['$is_a?']($$($nesting, 'String')))) {
-              str = self.$fragment(str)};
-            return self.fragments.$unshift(str);}, $$15.$$s = self, $$15.$$arity = 1, $$15));
-        }, $Base_unshift$14.$$arity = -1);
+            return self.fragments.$unshift(str);}, {$$arity: 1, $$s: self});
+        }, -1);
         
-        Opal.def(self, '$wrap', $Base_wrap$16 = function $$wrap(pre, post) {
+        $def(self, '$wrap', function $$wrap(pre, post) {
           var self = this;
 
           
           self.$unshift(pre);
           return self.$push(post);
-        }, $Base_wrap$16.$$arity = 2);
+        }, 2);
         
-        Opal.def(self, '$fragment', $Base_fragment$17 = function $$fragment(str) {
-          var self = this;
+        $def(self, '$fragment', function $$fragment(str, $kwargs) {
+          var loc, self = this, $ret_or_1 = nil;
 
-          return $$$($$($nesting, 'Opal'), 'Fragment').$new(str, self.$scope(), self.sexp)
-        }, $Base_fragment$17.$$arity = 1);
+          
+          
+          if ($kwargs == null) {
+            $kwargs = $hash2([], {});
+          } else if (!$kwargs.$$is_hash) {
+            throw Opal.ArgumentError.$new('expected kwargs');
+          };
+          
+          loc = $kwargs.$$smap["loc"];
+          if (loc == null) loc = true;
+          return $$$($$('Opal'), 'Fragment').$new(str, self.$scope(), ($truthy(($ret_or_1 = loc)) ? (self.sexp) : ($ret_or_1)));
+        }, -2);
         
-        Opal.def(self, '$error', $Base_error$18 = function $$error(msg) {
+        $def(self, '$error', function $$error(msg) {
           var self = this;
 
           return self.compiler.$error(msg)
-        }, $Base_error$18.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$scope', $Base_scope$19 = function $$scope() {
+        $def(self, '$scope', function $$scope() {
           var self = this;
 
           return self.compiler.$scope()
-        }, $Base_scope$19.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$top_scope', $Base_top_scope$20 = function $$top_scope() {
+        $def(self, '$top_scope', function $$top_scope() {
           var self = this;
 
-          return self.$scope().$top_scope()
-        }, $Base_top_scope$20.$$arity = 0);
+          return self.compiler.$top_scope()
+        }, 0);
         
-        Opal.def(self, '$s', $Base_s$21 = function $$s($a) {
-          var $post_args, args, self = this;
+        $def(self, '$s', function $$s(type, $a) {
+          var $post_args, children, self = this;
 
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments, 1);
           
-          args = $post_args;;
-          return $send(self.compiler, 's', Opal.to_a(args));
-        }, $Base_s$21.$$arity = -1);
+          children = $post_args;;
+          return $$$($$$($Opal, 'AST'), 'Node').$new(type, children, $hash2(["location"], {"location": self.sexp.$loc()}));
+        }, -2);
         
-        Opal.def(self, '$expr?', $Base_expr$ques$22 = function() {
+        $def(self, '$expr?', function $Base_expr$ques$7() {
           var self = this;
 
           return self.level['$==']("expr")
-        }, $Base_expr$ques$22.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$recv?', $Base_recv$ques$23 = function() {
+        $def(self, '$recv?', function $Base_recv$ques$8() {
           var self = this;
 
           return self.level['$==']("recv")
-        }, $Base_recv$ques$23.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$stmt?', $Base_stmt$ques$24 = function() {
+        $def(self, '$stmt?', function $Base_stmt$ques$9() {
           var self = this;
 
           return self.level['$==']("stmt")
-        }, $Base_stmt$ques$24.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$process', $Base_process$25 = function $$process(sexp, level) {
+        $def(self, '$process', function $$process(sexp, level) {
           var self = this;
 
           
           
-          if (level == null) {
-            level = "expr";
-          };
+          if (level == null) level = "expr";;
           return self.compiler.$process(sexp, level);
-        }, $Base_process$25.$$arity = -2);
+        }, -2);
         
-        Opal.def(self, '$expr', $Base_expr$26 = function $$expr(sexp) {
+        $def(self, '$expr', function $$expr(sexp) {
           var self = this;
 
           return self.compiler.$process(sexp, "expr")
-        }, $Base_expr$26.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$recv', $Base_recv$27 = function $$recv(sexp) {
+        $def(self, '$recv', function $$recv(sexp) {
           var self = this;
 
           return self.compiler.$process(sexp, "recv")
-        }, $Base_recv$27.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$stmt', $Base_stmt$28 = function $$stmt(sexp) {
+        $def(self, '$stmt', function $$stmt(sexp) {
           var self = this;
 
           return self.compiler.$process(sexp, "stmt")
-        }, $Base_stmt$28.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$expr_or_nil', $Base_expr_or_nil$29 = function $$expr_or_nil(sexp) {
+        $def(self, '$expr_or_nil', function $$expr_or_nil(sexp) {
           var self = this;
 
           if ($truthy(sexp)) {
@@ -31395,176 +28557,158 @@ Opal.modules["opal/nodes/base"] = function(Opal) {
           } else {
             return "nil"
           }
-        }, $Base_expr_or_nil$29.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$add_local', $Base_add_local$30 = function $$add_local(name) {
+        $def(self, '$add_local', function $$add_local(name) {
           var self = this;
 
           return self.$scope().$add_scope_local(name.$to_sym())
-        }, $Base_add_local$30.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$add_ivar', $Base_add_ivar$31 = function $$add_ivar(name) {
+        $def(self, '$add_ivar', function $$add_ivar(name) {
           var self = this;
 
           return self.$scope().$add_scope_ivar(name)
-        }, $Base_add_ivar$31.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$add_gvar', $Base_add_gvar$32 = function $$add_gvar(name) {
+        $def(self, '$add_gvar', function $$add_gvar(name) {
           var self = this;
 
           return self.$scope().$add_scope_gvar(name)
-        }, $Base_add_gvar$32.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$add_temp', $Base_add_temp$33 = function $$add_temp(temp) {
+        $def(self, '$add_temp', function $$add_temp(temp) {
           var self = this;
 
           return self.$scope().$add_scope_temp(temp)
-        }, $Base_add_temp$33.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$helper', $Base_helper$34 = function $$helper(name) {
+        $def(self, '$helper', function $$helper(name) {
           var self = this;
 
           return self.compiler.$helper(name)
-        }, $Base_helper$34.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$with_temp', $Base_with_temp$35 = function $$with_temp() {
-          var $iter = $Base_with_temp$35.$$p, block = $iter || nil, self = this;
+        $def(self, '$with_temp', function $$with_temp() {
+          var block = $$with_temp.$$p || nil, self = this;
 
-          if ($iter) $Base_with_temp$35.$$p = null;
+          delete $$with_temp.$$p;
           
-          
-          if ($iter) $Base_with_temp$35.$$p = null;;
+          ;
           return $send(self.compiler, 'with_temp', [], block.$to_proc());
-        }, $Base_with_temp$35.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$in_while?', $Base_in_while$ques$36 = function() {
+        $def(self, '$in_while?', function $Base_in_while$ques$10() {
           var self = this;
 
           return self.compiler['$in_while?']()
-        }, $Base_in_while$ques$36.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$while_loop', $Base_while_loop$37 = function $$while_loop() {
+        $def(self, '$while_loop', function $$while_loop() {
           var self = this;
 
           return self.compiler.$instance_variable_get("@while_loop")
-        }, $Base_while_loop$37.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$has_rescue_else?', $Base_has_rescue_else$ques$38 = function() {
+        $def(self, '$has_rescue_else?', function $Base_has_rescue_else$ques$11() {
           var self = this;
 
           return self.$scope()['$has_rescue_else?']()
-        }, $Base_has_rescue_else$ques$38.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$in_ensure', $Base_in_ensure$39 = function $$in_ensure() {
-          var $iter = $Base_in_ensure$39.$$p, block = $iter || nil, self = this;
+        $def(self, '$in_ensure', function $$in_ensure() {
+          var block = $$in_ensure.$$p || nil, self = this;
 
-          if ($iter) $Base_in_ensure$39.$$p = null;
+          delete $$in_ensure.$$p;
           
-          
-          if ($iter) $Base_in_ensure$39.$$p = null;;
+          ;
           return $send(self.$scope(), 'in_ensure', [], block.$to_proc());
-        }, $Base_in_ensure$39.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$in_ensure?', $Base_in_ensure$ques$40 = function() {
+        $def(self, '$in_ensure?', function $Base_in_ensure$ques$12() {
           var self = this;
 
           return self.$scope()['$in_ensure?']()
-        }, $Base_in_ensure$ques$40.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$in_resbody', $Base_in_resbody$41 = function $$in_resbody() {
-          var $iter = $Base_in_resbody$41.$$p, block = $iter || nil, self = this;
+        $def(self, '$in_resbody', function $$in_resbody() {
+          var block = $$in_resbody.$$p || nil, self = this;
 
-          if ($iter) $Base_in_resbody$41.$$p = null;
+          delete $$in_resbody.$$p;
           
-          
-          if ($iter) $Base_in_resbody$41.$$p = null;;
+          ;
           return $send(self.$scope(), 'in_resbody', [], block.$to_proc());
-        }, $Base_in_resbody$41.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$in_resbody?', $Base_in_resbody$ques$42 = function() {
+        $def(self, '$in_resbody?', function $Base_in_resbody$ques$13() {
           var self = this;
 
           return self.$scope()['$in_resbody?']()
-        }, $Base_in_resbody$ques$42.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$in_rescue', $Base_in_rescue$43 = function $$in_rescue(node) {
-          var $iter = $Base_in_rescue$43.$$p, block = $iter || nil, self = this;
+        $def(self, '$in_rescue', function $$in_rescue(node) {
+          var block = $$in_rescue.$$p || nil, self = this;
 
-          if ($iter) $Base_in_rescue$43.$$p = null;
+          delete $$in_rescue.$$p;
           
-          
-          if ($iter) $Base_in_rescue$43.$$p = null;;
+          ;
           return $send(self.$scope(), 'in_rescue', [node], block.$to_proc());
-        }, $Base_in_rescue$43.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$class_variable_owner_nesting_level', $Base_class_variable_owner_nesting_level$44 = function $$class_variable_owner_nesting_level() {
-          var $a, self = this, cvar_scope = nil, nesting_level = nil, $ret_or_2 = nil;
+        $def(self, '$class_variable_owner_nesting_level', function $$class_variable_owner_nesting_level() {
+          var $a, self = this, cvar_scope = nil, nesting_level = nil, $ret_or_1 = nil;
 
           
           cvar_scope = self.$scope();
           nesting_level = 0;
-          while ($truthy((function() {if ($truthy(($ret_or_2 = cvar_scope))) {
-            return cvar_scope['$class_scope?']()['$!']()
-          } else {
-            return $ret_or_2
-          }; return nil; })())) {
+          while ($truthy(($truthy(($ret_or_1 = cvar_scope)) ? (cvar_scope['$class_scope?']()['$!']()) : ($ret_or_1)))) {
             
             if ($truthy(cvar_scope['$sclass?']())) {
-              nesting_level = $rb_plus(nesting_level, 1)};
+              nesting_level = $rb_plus(nesting_level, 1)
+            };
             cvar_scope = cvar_scope.$parent();
           };
           return nesting_level;
-        }, $Base_class_variable_owner_nesting_level$44.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$class_variable_owner', $Base_class_variable_owner$45 = function $$class_variable_owner() {
+        $def(self, '$class_variable_owner', function $$class_variable_owner() {
           var self = this;
 
           if ($truthy(self.$scope())) {
-            return "" + "$nesting[" + (self.$class_variable_owner_nesting_level()) + "]"
+            return "" + (self.$scope().$nesting()) + "[" + (self.$class_variable_owner_nesting_level()) + "]"
           } else {
             return "Opal.Object"
           }
-        }, $Base_class_variable_owner$45.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$comments', $Base_comments$46 = function $$comments() {
+        $def(self, '$comments', function $$comments() {
           var self = this;
 
           return self.$compiler().$comments()['$[]'](self.sexp.$loc())
-        }, $Base_comments$46.$$arity = 0);
-        return (Opal.def(self, '$source_location', $Base_source_location$47 = function $$source_location() {
+        }, 0);
+        return $def(self, '$source_location', function $$source_location() {
           var self = this, file = nil, line = nil;
 
           
           file = self.sexp.$loc().$expression().$source_buffer().$name();
           if ($truthy(file['$start_with?']("corelib/"))) {
-            file = "" + "<internal:" + (file) + ">"};
+            file = "<internal:" + (file) + ">"
+          };
           if ($truthy(file['$end_with?'](".js"))) {
-            file = "" + "<js:" + (file) + ">"};
+            file = "<js:" + (file) + ">"
+          };
           line = self.sexp.$loc().$line();
-          return "" + "['" + (file) + "', " + (line) + "]";
-        }, $Base_source_location$47.$$arity = 0), nil) && 'source_location';
+          return "['" + (file) + "', " + (line) + "]";
+        }, 0);
       })($nesting[0], null, $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/literal"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_le(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs <= rhs : lhs['$<='](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $hash2 = Opal.hash2, $send = Opal.send, $lambda = Opal.lambda, $send2 = Opal.send2, $find_super = Opal.find_super, $slice = Opal.slice;
+Opal.modules["opal/nodes/literal"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $eqeq = Opal.eqeq, $def = Opal.def, $defs = Opal.defs, $truthy = Opal.truthy, $const_set = Opal.const_set, $hash2 = Opal.hash2, $regexp = Opal.regexp, $send = Opal.send, $rb_plus = Opal.rb_plus, $lambda = Opal.lambda, $rb_le = Opal.rb_le, $rb_minus = Opal.rb_minus, $send2 = Opal.send2, $find_super = Opal.find_super, $to_a = Opal.to_a, $eqeqeq = Opal.eqeqeq, $slice = Opal.slice, $Opal = Opal.Opal, $rb_gt = Opal.rb_gt;
 
-  Opal.add_stubs(['$require', '$handle', '$push', '$to_s', '$type', '$children', '$value', '$recv?', '$wrap', '$freeze', '$join', '$keys', '$gsub', '$even?', '$length', '$last_match', '$+', '$chop', '$[]', '$inspect', '$to_i', '$to_utf16', '$translate_escape_chars', '$valid_encoding?', '$helper', '$upcase', '$<=', '$call', '$-', '$>>', '$&', '$attr_accessor', '$extract_flags_and_value', '$select!', '$flags', '$=~', '$warning', '$compiler', '$==', '$compile_static_regexp', '$compile_dynamic_regexp', '$each_with_index', '$zero?', '$expr', '$any?', '$===', '$new', '$map', '$to_proc', '$flags=', '$empty?', '$s', '$single_line?', '$value=', '$include?', '$is_a?', '$updated', '$delete', '$source', '$expression', '$loc', '$private', '$>', '$!=', '$!', '$regexp', '$each', '$compile_inline?', '$compile_inline', '$compile_range_initialize', '$start', '$finish', '$raise', '$expr_or_nil', '$numerator', '$denominator', '$real', '$imag']);
+  Opal.add_stubs('require,handle,==,type,push,self,scope,to_s,children,value,recv?,wrap,freeze,join,keys,gsub,even?,length,last_match,+,chop,[],inspect,to_i,to_utf16,translate_escape_chars,valid_encoding?,helper,upcase,<=,call,-,>>,&,attr_accessor,extract_flags_and_value,select!,flags,=~,warning,compiler,compile_static_regexp,compile_dynamic_regexp,each_with_index,zero?,expr,any?,===,new,map,to_proc,flags=,empty?,s,single_line?,value=,include?,is_a?,updated,delete,source,expression,loc,private,>,!=,!,regexp,first,each,compile_inline?,compile_inline,compile_range_initialize,start,finish,raise,expr_or_nil,absolute_const,top_scope,numerator,denominator,real,imag');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -31575,38 +28719,39 @@ Opal.modules["opal/nodes/literal"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
-      (function($base, $super, $parent_nesting) {
+      (function($base, $super) {
         var self = $klass($base, $super, 'ValueNode');
 
-        var $nesting = [self].concat($parent_nesting), $ValueNode_compile$1, $ValueNode_truthy_optimize$ques$2;
-
+        
         
         self.$handle("true", "false", "self", "nil");
         
-        Opal.def(self, '$compile', $ValueNode_compile$1 = function $$compile() {
-          var self = this;
-
-          return self.$push(self.$type().$to_s())
-        }, $ValueNode_compile$1.$$arity = 0);
-        return (Opal.defs(self, '$truthy_optimize?', $ValueNode_truthy_optimize$ques$2 = function() {
+        $def(self, '$compile', function $$compile() {
           var self = this;
 
+          if ($eqeq(self.$type(), "self")) {
+            return self.$push(self.$scope().$self())
+          } else {
+            return self.$push(self.$type().$to_s())
+          }
+        }, 0);
+        return $defs(self, '$truthy_optimize?', function $ValueNode_truthy_optimize$ques$1() {
+          
           return true
-        }, $ValueNode_truthy_optimize$ques$2.$$arity = 0), nil) && 'truthy_optimize?';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'NumericNode');
 
-        var $nesting = [self].concat($parent_nesting), $NumericNode_compile$3, $NumericNode_truthy_optimize$ques$4;
-
+        
         
         self.$handle("int", "float");
         self.$children("value");
         
-        Opal.def(self, '$compile', $NumericNode_compile$3 = function $$compile() {
+        $def(self, '$compile', function $$compile() {
           var self = this;
 
           
@@ -31616,51 +28761,46 @@ Opal.modules["opal/nodes/literal"] = function(Opal) {
           } else {
             return nil
           };
-        }, $NumericNode_compile$3.$$arity = 0);
-        return (Opal.defs(self, '$truthy_optimize?', $NumericNode_truthy_optimize$ques$4 = function() {
-          var self = this;
-
+        }, 0);
+        return $defs(self, '$truthy_optimize?', function $NumericNode_truthy_optimize$ques$2() {
+          
           return true
-        }, $NumericNode_truthy_optimize$ques$4.$$arity = 0), nil) && 'truthy_optimize?';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
+        }, 0);
+      })($nesting[0], $$('Base'));
       (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'StringNode');
 
-        var $nesting = [self].concat($parent_nesting), $StringNode_translate_escape_chars$5, $StringNode_compile$7, $StringNode_to_utf16$9;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
         
         self.$handle("str");
         self.$children("value");
-        Opal.const_set($nesting[0], 'ESCAPE_CHARS', $hash2(["a", "e"], {"a": "\\u0007", "e": "\\u001b"}).$freeze());
-        Opal.const_set($nesting[0], 'ESCAPE_REGEX', Opal.regexp(["(\\\\+)([", $$($nesting, 'ESCAPE_CHARS').$keys().$join(""), "])"]).$freeze());
+        $const_set($nesting[0], 'ESCAPE_CHARS', $hash2(["a", "e"], {"a": "\\u0007", "e": "\\u001b"}).$freeze());
+        $const_set($nesting[0], 'ESCAPE_REGEX', $regexp(["(\\\\+)([", $$('ESCAPE_CHARS').$keys().$join(""), "])"]).$freeze());
         
-        Opal.def(self, '$translate_escape_chars', $StringNode_translate_escape_chars$5 = function $$translate_escape_chars(inspect_string) {
-          var $$6, self = this;
-
-          return $send(inspect_string, 'gsub', [$$($nesting, 'ESCAPE_REGEX')], ($$6 = function(original){var self = $$6.$$s == null ? this : $$6.$$s;
-
+        $def(self, '$translate_escape_chars', function $$translate_escape_chars(inspect_string) {
+          
+          return $send(inspect_string, 'gsub', [$$('ESCAPE_REGEX')], function $$3(original){
             
             
-            if (original == null) {
-              original = nil;
-            };
-            if ($truthy($$($nesting, 'Regexp').$last_match(1).$length()['$even?']())) {
+            if (original == null) original = nil;;
+            if ($truthy($$('Regexp').$last_match(1).$length()['$even?']())) {
               return original
             } else {
-              return $rb_plus($$($nesting, 'Regexp').$last_match(1).$chop(), $$($nesting, 'ESCAPE_CHARS')['$[]']($$($nesting, 'Regexp').$last_match(2)))
-            };}, $$6.$$s = self, $$6.$$arity = 1, $$6))
-        }, $StringNode_translate_escape_chars$5.$$arity = 1);
+              return $rb_plus($$('Regexp').$last_match(1).$chop(), $$('ESCAPE_CHARS')['$[]']($$('Regexp').$last_match(2)))
+            };}, 1)
+        }, 1);
         
-        Opal.def(self, '$compile', $StringNode_compile$7 = function $$compile() {
-          var $$8, self = this, string_value = nil, sanitized_value = nil;
+        $def(self, '$compile', function $$compile() {
+          var self = this, string_value = nil, sanitized_value = nil;
 
           
           string_value = self.$value();
-          sanitized_value = $send(string_value.$inspect(), 'gsub', [/\\u\{([0-9a-f]+)\}/], ($$8 = function(){var self = $$8.$$s == null ? this : $$8.$$s, code_point = nil;
+          sanitized_value = $send(string_value.$inspect(), 'gsub', [/\\u\{([0-9a-f]+)\}/], function $$4(){var self = $$4.$$s == null ? this : $$4.$$s, code_point = nil;
 
             
-            code_point = $$($nesting, 'Regexp').$last_match(1).$to_i(16);
-            return self.$to_utf16(code_point);}, $$8.$$s = self, $$8.$$arity = 0, $$8));
+            code_point = $$('Regexp').$last_match(1).$to_i(16);
+            return self.$to_utf16(code_point);}, {$$arity: 0, $$s: self});
           self.$push(self.$translate_escape_chars(sanitized_value));
           nil;
           if ($truthy(self.$value()['$valid_encoding?']())) {
@@ -31670,247 +28810,232 @@ Opal.modules["opal/nodes/literal"] = function(Opal) {
             self.$helper("binary");
             return self.$wrap("$binary(", ")");
           };
-        }, $StringNode_compile$7.$$arity = 0);
-        return (Opal.def(self, '$to_utf16', $StringNode_to_utf16$9 = function $$to_utf16(code_point) {
-          var $$10, self = this, ten_bits = nil, u = nil, lead_surrogate = nil, tail_surrogate = nil;
+        }, 0);
+        return $def(self, '$to_utf16', function $$to_utf16(code_point) {
+          var ten_bits = nil, u = nil, lead_surrogate = nil, tail_surrogate = nil;
 
           
           ten_bits = 1023;
-          u = $lambda(($$10 = function(code_unit){var self = $$10.$$s == null ? this : $$10.$$s;
-
+          u = $lambda(function $$5(code_unit){
             
             
-            if (code_unit == null) {
-              code_unit = nil;
-            };
-            return $rb_plus("\\u", code_unit.$to_s(16).$upcase());}, $$10.$$s = self, $$10.$$arity = 1, $$10));
+            if (code_unit == null) code_unit = nil;;
+            return $rb_plus("\\u", code_unit.$to_s(16).$upcase());}, 1);
           if ($truthy($rb_le(code_point, 65535))) {
-            return u.$call(code_point)};
+            return u.$call(code_point)
+          };
           code_point = $rb_minus(code_point, 65536);
           lead_surrogate = $rb_plus(55296, code_point['$>>'](10));
           tail_surrogate = $rb_plus(56320, code_point['$&'](ten_bits));
           return $rb_plus(u.$call(lead_surrogate), u.$call(tail_surrogate));
-        }, $StringNode_to_utf16$9.$$arity = 1), nil) && 'to_utf16';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 1);
+      })($nesting[0], $$('Base'), $nesting);
+      (function($base, $super) {
         var self = $klass($base, $super, 'SymbolNode');
 
-        var $nesting = [self].concat($parent_nesting), $SymbolNode_compile$11;
-
+        
         
         self.$handle("sym");
         self.$children("value");
-        return (Opal.def(self, '$compile', $SymbolNode_compile$11 = function $$compile() {
+        return $def(self, '$compile', function $$compile() {
           var self = this;
 
           return self.$push(self.$value().$to_s().$inspect())
-        }, $SymbolNode_compile$11.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
+        }, 0);
+      })($nesting[0], $$('Base'));
       (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'RegexpNode');
 
-        var $nesting = [self].concat($parent_nesting), $RegexpNode_initialize$12, $RegexpNode_compile$13, $RegexpNode_compile_dynamic_regexp$15, $RegexpNode_compile_static_regexp$17, $RegexpNode_extract_flags_and_value$18, $RegexpNode_raw_value$20, $RegexpNode_single_line$ques$21;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.sexp = nil;
+        $proto.sexp = nil;
         
         self.$handle("regexp");
         self.$attr_accessor("value", "flags");
-        Opal.const_set($nesting[0], 'SUPPORTED_FLAGS', /[gimuy]/.$freeze());
+        $const_set($nesting[0], 'SUPPORTED_FLAGS', /[gimuy]/.$freeze());
         
-        Opal.def(self, '$initialize', $RegexpNode_initialize$12 = function $$initialize($a) {
-          var $post_args, $iter = $RegexpNode_initialize$12.$$p, $yield = $iter || nil, self = this, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        $def(self, '$initialize', function $$initialize($a) {
+          var $post_args, $rest_arg, $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $RegexpNode_initialize$12.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$initialize.$$p;
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
-          ;
-          $send2(self, $find_super(self, 'initialize', $RegexpNode_initialize$12, false, true), 'initialize', $zuper, $iter);
+          $post_args = Opal.slice.call(arguments);
+          
+          $rest_arg = $post_args;;
+          $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', $to_a($rest_arg), $yield);
           return self.$extract_flags_and_value();
-        }, $RegexpNode_initialize$12.$$arity = -1);
+        }, -1);
         
-        Opal.def(self, '$compile', $RegexpNode_compile$13 = function $$compile() {
-          var $$14, self = this;
+        $def(self, '$compile', function $$compile() {
+          var self = this;
 
           
-          $send(self.$flags(), 'select!', [], ($$14 = function(flag){var self = $$14.$$s == null ? this : $$14.$$s;
+          $send(self.$flags(), 'select!', [], function $$6(flag){var self = $$6.$$s == null ? this : $$6.$$s;
 
             
             
-            if (flag == null) {
-              flag = nil;
-            };
-            if ($truthy($$($nesting, 'SUPPORTED_FLAGS')['$=~'](flag))) {
+            if (flag == null) flag = nil;;
+            if ($truthy($$('SUPPORTED_FLAGS')['$=~'](flag))) {
               return true
             } else {
               
-              self.$compiler().$warning("" + "Skipping the '" + (flag) + "' Regexp flag as it's not widely supported by JavaScript vendors.");
+              self.$compiler().$warning("Skipping the '" + (flag) + "' Regexp flag as it's not widely supported by JavaScript vendors.");
               return false;
-            };}, $$14.$$s = self, $$14.$$arity = 1, $$14));
-          if (self.$value().$type()['$==']("str")) {
+            };}, {$$arity: 1, $$s: self});
+          if ($eqeq(self.$value().$type(), "str")) {
             return self.$compile_static_regexp()
           } else {
             return self.$compile_dynamic_regexp()
           };
-        }, $RegexpNode_compile$13.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_dynamic_regexp', $RegexpNode_compile_dynamic_regexp$15 = function $$compile_dynamic_regexp() {
-          var $$16, self = this;
+        $def(self, '$compile_dynamic_regexp', function $$compile_dynamic_regexp() {
+          var self = this;
 
           
-          self.$push("Opal.regexp([");
-          $send(self.$value().$children(), 'each_with_index', [], ($$16 = function(v, index){var self = $$16.$$s == null ? this : $$16.$$s;
+          self.$helper("regexp");
+          self.$push("$regexp([");
+          $send(self.$value().$children(), 'each_with_index', [], function $$7(v, index){var self = $$7.$$s == null ? this : $$7.$$s;
 
             
             
-            if (v == null) {
-              v = nil;
-            };
+            if (v == null) v = nil;;
             
-            if (index == null) {
-              index = nil;
-            };
-            if ($truthy(index['$zero?']())) {
-            } else {
+            if (index == null) index = nil;;
+            if (!$truthy(index['$zero?']())) {
               self.$push(", ")
             };
-            return self.$push(self.$expr(v));}, $$16.$$s = self, $$16.$$arity = 2, $$16));
+            return self.$push(self.$expr(v));}, {$$arity: 2, $$s: self});
           self.$push("]");
           if ($truthy(self.$flags()['$any?']())) {
-            self.$push("" + ", '" + (self.$flags().$join()) + "'")};
+            self.$push(", '" + (self.$flags().$join()) + "'")
+          };
           return self.$push(")");
-        }, $RegexpNode_compile_dynamic_regexp$15.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_static_regexp', $RegexpNode_compile_static_regexp$17 = function $$compile_static_regexp() {
-          var self = this, value = nil, $case = nil;
+        $def(self, '$compile_static_regexp', function $$compile_static_regexp() {
+          var self = this, value = nil, $ret_or_1 = nil;
 
           
           value = self.$value().$children()['$[]'](0);
-          return (function() {$case = value;
-          if (""['$===']($case)) {return self.$push("/(?:)/")}
-          else {return self.$push("" + ($$($nesting, 'Regexp').$new(value).$inspect()) + (self.$flags().$join()))}})();
-        }, $RegexpNode_compile_static_regexp$17.$$arity = 0);
+          if ($eqeqeq("", ($ret_or_1 = value))) {
+            return self.$push("/(?:)/")
+          } else {
+            return self.$push("" + ($$('Regexp').$new(value).$inspect()) + (self.$flags().$join()))
+          };
+        }, 0);
         
-        Opal.def(self, '$extract_flags_and_value', $RegexpNode_extract_flags_and_value$18 = function $$extract_flags_and_value() {
-          var $a, $b, $$19, self = this, values = nil, flags_sexp = nil, $writer = nil, parts = nil;
+        $def(self, '$extract_flags_and_value', function $$extract_flags_and_value() {
+          var $a, $b, self = this, values = nil, flags_sexp = nil, $writer = nil, parts = nil;
 
           
-          $a = [].concat(Opal.to_a(self.$children())), $b = $a.length - 1, $b = ($b < 0) ? 0 : $b, (values = $slice.call($a, 0, $b)), (flags_sexp = ($a[$b] == null ? nil : $a[$b])), $a;
+          $a = [].concat($to_a(self.$children())), $b = $a.length - 1, $b = ($b < 0) ? 0 : $b, (values = $slice.call($a, 0, $b)), (flags_sexp = ($a[$b] == null ? nil : $a[$b])), $a;
           
           $writer = [$send(flags_sexp.$children(), 'map', [], "to_s".$to_proc())];
-          $send(self, 'flags=', Opal.to_a($writer));
+          $send(self, 'flags=', $to_a($writer));
           $writer[$rb_minus($writer["length"], 1)];;
           
-          $writer = [(function() {if ($truthy(values['$empty?']())) {
-            return self.$s("str", "")
-          } else if ($truthy(self['$single_line?'](values))) {
-            return values['$[]'](0)
-          } else {
-            return $send(self, 's', ["dstr"].concat(Opal.to_a(values)))
-          }; return nil; })()];
-          $send(self, 'value=', Opal.to_a($writer));
+          $writer = [($truthy(values['$empty?']()) ? (self.$s("str", "")) : ($truthy(self['$single_line?'](values)) ? (values['$[]'](0)) : ($send(self, 's', ["dstr"].concat($to_a(values))))))];
+          $send(self, 'value=', $to_a($writer));
           $writer[$rb_minus($writer["length"], 1)];;
           if ($truthy(self.$flags()['$include?']("x"))) {
             
-            parts = $send(self.$value().$children(), 'map', [], ($$19 = function(part){var self = $$19.$$s == null ? this : $$19.$$s, $ret_or_1 = nil, trimmed_value = nil;
+            parts = $send(self.$value().$children(), 'map', [], function $$8(part){var self = $$8.$$s == null ? this : $$8.$$s, trimmed_value = nil;
 
               
               
-              if (part == null) {
-                part = nil;
-              };
-              if ($truthy((function() {if ($truthy(($ret_or_1 = part['$is_a?']($$$($$$($$$('::', 'Opal'), 'AST'), 'Node'))))) {
-                return part.$type()['$==']("str")
-              } else {
-                return $ret_or_1
-              }; return nil; })())) {
+              if (part == null) part = nil;;
+              if (($truthy(part['$is_a?']($$$($$$($Opal, 'AST'), 'Node'))) && ($eqeq(part.$type(), "str")))) {
                 
                 trimmed_value = part.$children()['$[]'](0).$gsub(/^\s*\#.*/, "").$gsub(/\s/, "");
                 return self.$s("str", trimmed_value);
               } else {
                 return part
-              };}, $$19.$$s = self, $$19.$$arity = 1, $$19));
+              };}, {$$arity: 1, $$s: self});
             
             $writer = [self.$value().$updated(nil, parts)];
-            $send(self, 'value=', Opal.to_a($writer));
+            $send(self, 'value=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
-            self.$flags().$delete("x");};
-          if (self.$value().$type()['$==']("str")) {
+            self.$flags().$delete("x");
+          };
+          if ($eqeq(self.$value().$type(), "str")) {
             
             $writer = [self.$s("str", self.$value().$children()['$[]'](0).$gsub("\\A", "^").$gsub("\\z", "$"))];
-            $send(self, 'value=', Opal.to_a($writer));
+            $send(self, 'value=', $to_a($writer));
             return $writer[$rb_minus($writer["length"], 1)];
           } else {
             return nil
           };
-        }, $RegexpNode_extract_flags_and_value$18.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$raw_value', $RegexpNode_raw_value$20 = function $$raw_value() {
+        $def(self, '$raw_value', function $$raw_value() {
           var self = this, $writer = nil;
 
           
           $writer = [self.sexp.$loc().$expression().$source()];
-          $send(self, 'value=', Opal.to_a($writer));
+          $send(self, 'value=', $to_a($writer));
           return $writer[$rb_minus($writer["length"], 1)];
-        }, $RegexpNode_raw_value$20.$$arity = 0);
+        }, 0);
         self.$private();
-        return (Opal.def(self, '$single_line?', $RegexpNode_single_line$ques$21 = function(values) {
-          var self = this, value = nil, $ret_or_2 = nil;
+        return $def(self, '$single_line?', function $RegexpNode_single_line$ques$9(values) {
+          var value = nil, $ret_or_1 = nil;
 
           
           if ($truthy($rb_gt(values.$length(), 1))) {
-            return false};
+            return false
+          };
           value = values['$[]'](0);
-          if ($truthy(($ret_or_2 = value.$type()['$!=']("str")))) {
-            return $ret_or_2
+          if ($truthy(($ret_or_1 = value.$type()['$!=']("str")))) {
+            return $ret_or_1
           } else {
             return value.$children()['$[]'](0)['$include?']("\n")['$!']()
           };
-        }, $RegexpNode_single_line$ques$21.$$arity = 1), nil) && 'single_line?';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 1);
+      })($nesting[0], $$('Base'), $nesting);
+      (function($base, $super) {
         var self = $klass($base, $super, 'MatchCurrentLineNode');
 
-        var $nesting = [self].concat($parent_nesting), $MatchCurrentLineNode_compile$22;
-
+        
         
         self.$handle("match_current_line");
         self.$children("regexp");
-        return (Opal.def(self, '$compile', $MatchCurrentLineNode_compile$22 = function $$compile() {
+        return $def(self, '$compile', function $$compile() {
           var self = this, gvar_sexp = nil, send_node = nil;
 
           
           gvar_sexp = self.$s("gvar", "$_");
           send_node = self.$s("send", gvar_sexp, "=~", self.$regexp());
           return self.$push(self.$expr(send_node));
-        }, $MatchCurrentLineNode_compile$22.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'DynamicStringNode');
 
-        var $nesting = [self].concat($parent_nesting), $DynamicStringNode_compile$23;
-
+        
         
         self.$handle("dstr");
-        return (Opal.def(self, '$compile', $DynamicStringNode_compile$23 = function $$compile() {
-          var $$24, self = this;
+        return $def(self, '$compile', function $$compile() {
+          var self = this, skip_empty = nil;
 
           
-          self.$push("\"\"");
-          return $send(self.$children(), 'each', [], ($$24 = function(part){var self = $$24.$$s == null ? this : $$24.$$s;
+          if (($truthy($rb_gt(self.$children().$length(), 1)) && ($eqeq(self.$children().$first().$type(), "str")))) {
+            skip_empty = true
+          } else {
+            self.$push("\"\"")
+          };
+          return $send(self.$children(), 'each', [], function $$10(part){var self = $$10.$$s == null ? this : $$10.$$s;
 
             
             
-            if (part == null) {
-              part = nil;
+            if (part == null) part = nil;;
+            if ($truthy(skip_empty)) {
+              skip_empty = false
+            } else {
+              self.$push(" + ")
             };
-            self.$push(" + ");
-            if (part.$type()['$==']("str")) {
-              self.$push(part.$children()['$[]'](0).$inspect())
+            if ($eqeq(part.$type(), "str")) {
+              self.$push(self.$expr(part))
             } else {
               self.$push("(", self.$expr(part), ")")
             };
@@ -31918,26 +29043,25 @@ Opal.modules["opal/nodes/literal"] = function(Opal) {
               return self.$wrap("(", ")")
             } else {
               return nil
-            };}, $$24.$$s = self, $$24.$$arity = 1, $$24));
-        }, $DynamicStringNode_compile$23.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+            };}, {$$arity: 1, $$s: self});
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'DynamicSymbolNode');
 
-        var $nesting = [self].concat($parent_nesting);
-
+        
         return self.$handle("dsym")
-      })($nesting[0], $$($nesting, 'DynamicStringNode'), $nesting);
+      })($nesting[0], $$('DynamicStringNode'));
       (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'RangeNode');
 
-        var $nesting = [self].concat($parent_nesting), $RangeNode_compile$25, $RangeNode_compile_inline$ques$26, $RangeNode_compile_inline$27, $RangeNode_compile_range_initialize$28;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
         
         self.$children("start", "finish");
-        Opal.const_set($nesting[0], 'SIMPLE_CHILDREN_TYPES', ["int", "float", "str", "sym"].$freeze());
+        $const_set($nesting[0], 'SIMPLE_CHILDREN_TYPES', ["int", "float", "str", "sym"].$freeze());
         
-        Opal.def(self, '$compile', $RangeNode_compile$25 = function $$compile() {
+        $def(self, '$compile', function $$compile() {
           var self = this;
 
           if ($truthy(self['$compile_inline?']())) {
@@ -31947,123 +29071,109 @@ Opal.modules["opal/nodes/literal"] = function(Opal) {
           } else {
             return self.$compile_range_initialize()
           }
-        }, $RangeNode_compile$25.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_inline?', $RangeNode_compile_inline$ques$26 = function() {
-          var self = this, $ret_or_3 = nil, $ret_or_4 = nil, $ret_or_5 = nil, $ret_or_6 = nil, $ret_or_7 = nil;
+        $def(self, '$compile_inline?', function $RangeNode_compile_inline$ques$11() {
+          var self = this, $ret_or_1 = nil, $ret_or_2 = nil, $ret_or_3 = nil;
 
-          if ($truthy(($ret_or_3 = (function() {if ($truthy(($ret_or_4 = self.$start()['$!']()))) {
-            return $ret_or_4
-          } else {
-            
-            if ($truthy(($ret_or_5 = self.$start().$type()))) {
-              return $$($nesting, 'SIMPLE_CHILDREN_TYPES')['$include?'](self.$start().$type())
-            } else {
-              return $ret_or_5
-            };
-          }; return nil; })()))) {
+          if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = self.$start()['$!']())) ? ($ret_or_2) : (($truthy(($ret_or_3 = self.$start().$type())) ? ($$('SIMPLE_CHILDREN_TYPES')['$include?'](self.$start().$type())) : ($ret_or_3))))))) {
             
-            if ($truthy(($ret_or_6 = self.$finish()['$!']()))) {
-              return $ret_or_6
+            if ($truthy(($ret_or_2 = self.$finish()['$!']()))) {
+              return $ret_or_2
             } else {
               
-              if ($truthy(($ret_or_7 = self.$finish().$type()))) {
-                return $$($nesting, 'SIMPLE_CHILDREN_TYPES')['$include?'](self.$finish().$type())
+              if ($truthy(($ret_or_3 = self.$finish().$type()))) {
+                return $$('SIMPLE_CHILDREN_TYPES')['$include?'](self.$finish().$type())
               } else {
-                return $ret_or_7
+                return $ret_or_3
               };
             };
           } else {
-            return $ret_or_3
+            return $ret_or_1
           }
-        }, $RangeNode_compile_inline$ques$26.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_inline', $RangeNode_compile_inline$27 = function $$compile_inline() {
+        $def(self, '$compile_inline', function $$compile_inline() {
           var self = this;
 
-          return self.$raise($$($nesting, 'NotImplementedError'))
-        }, $RangeNode_compile_inline$27.$$arity = 0);
-        return (Opal.def(self, '$compile_range_initialize', $RangeNode_compile_range_initialize$28 = function $$compile_range_initialize() {
+          return self.$raise($$('NotImplementedError'))
+        }, 0);
+        return $def(self, '$compile_range_initialize', function $$compile_range_initialize() {
           var self = this;
 
-          return self.$raise($$($nesting, 'NotImplementedError'))
-        }, $RangeNode_compile_range_initialize$28.$$arity = 0), nil) && 'compile_range_initialize';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+          return self.$raise($$('NotImplementedError'))
+        }, 0);
+      })($nesting[0], $$('Base'), $nesting);
+      (function($base, $super) {
         var self = $klass($base, $super, 'InclusiveRangeNode');
 
-        var $nesting = [self].concat($parent_nesting), $InclusiveRangeNode_compile_inline$29, $InclusiveRangeNode_compile_range_initialize$30;
-
+        
         
         self.$handle("irange");
         
-        Opal.def(self, '$compile_inline', $InclusiveRangeNode_compile_inline$29 = function $$compile_inline() {
+        $def(self, '$compile_inline', function $$compile_inline() {
           var self = this;
 
           return self.$push("$range(", self.$expr_or_nil(self.$start()), ", ", self.$expr_or_nil(self.$finish()), ", false)")
-        }, $InclusiveRangeNode_compile_inline$29.$$arity = 0);
-        return (Opal.def(self, '$compile_range_initialize', $InclusiveRangeNode_compile_range_initialize$30 = function $$compile_range_initialize() {
+        }, 0);
+        return $def(self, '$compile_range_initialize', function $$compile_range_initialize() {
           var self = this;
 
           return self.$push("Opal.Range.$new(", self.$expr_or_nil(self.$start()), ", ", self.$expr_or_nil(self.$finish()), ", false)")
-        }, $InclusiveRangeNode_compile_range_initialize$30.$$arity = 0), nil) && 'compile_range_initialize';
-      })($nesting[0], $$($nesting, 'RangeNode'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('RangeNode'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'ExclusiveRangeNode');
 
-        var $nesting = [self].concat($parent_nesting), $ExclusiveRangeNode_compile_inline$31, $ExclusiveRangeNode_compile_range_initialize$32;
-
+        
         
         self.$handle("erange");
         
-        Opal.def(self, '$compile_inline', $ExclusiveRangeNode_compile_inline$31 = function $$compile_inline() {
+        $def(self, '$compile_inline', function $$compile_inline() {
           var self = this;
 
           return self.$push("$range(", self.$expr_or_nil(self.$start()), ", ", self.$expr_or_nil(self.$finish()), ", true)")
-        }, $ExclusiveRangeNode_compile_inline$31.$$arity = 0);
-        return (Opal.def(self, '$compile_range_initialize', $ExclusiveRangeNode_compile_range_initialize$32 = function $$compile_range_initialize() {
+        }, 0);
+        return $def(self, '$compile_range_initialize', function $$compile_range_initialize() {
           var self = this;
 
           return self.$push("Opal.Range.$new(", self.$expr_or_nil(self.$start()), ",", self.$expr_or_nil(self.$finish()), ", true)")
-        }, $ExclusiveRangeNode_compile_range_initialize$32.$$arity = 0), nil) && 'compile_range_initialize';
-      })($nesting[0], $$($nesting, 'RangeNode'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('RangeNode'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'RationalNode');
 
-        var $nesting = [self].concat($parent_nesting), $RationalNode_compile$33;
-
+        
         
         self.$handle("rational");
         self.$children("value");
-        return (Opal.def(self, '$compile', $RationalNode_compile$33 = function $$compile() {
+        return $def(self, '$compile', function $$compile() {
           var self = this;
 
-          return self.$push("" + "Opal.Rational.$new(" + (self.$value().$numerator()) + ", " + (self.$value().$denominator()) + ")")
-        }, $RationalNode_compile$33.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      return (function($base, $super, $parent_nesting) {
+          return self.$push("" + (self.$top_scope().$absolute_const()) + "('Rational').$new(" + (self.$value().$numerator()) + ", " + (self.$value().$denominator()) + ")")
+        }, 0);
+      })($nesting[0], $$('Base'));
+      return (function($base, $super) {
         var self = $klass($base, $super, 'ComplexNode');
 
-        var $nesting = [self].concat($parent_nesting), $ComplexNode_compile$34;
-
+        
         
         self.$handle("complex");
         self.$children("value");
-        return (Opal.def(self, '$compile', $ComplexNode_compile$34 = function $$compile() {
+        return $def(self, '$compile', function $$compile() {
           var self = this;
 
-          return self.$push("" + "Opal.Complex.$new(" + (self.$value().$real()) + ", " + (self.$value().$imag()) + ")")
-        }, $ComplexNode_compile$34.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
+          return self.$push("" + (self.$top_scope().$absolute_const()) + "('Complex').$new(" + (self.$value().$real()) + ", " + (self.$value().$imag()) + ")")
+        }, 0);
+      })($nesting[0], $$('Base'));
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/variables"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send, $range = Opal.range, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["opal/nodes/variables"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $def = Opal.def, $send = Opal.send, $range = Opal.range, $eqeqeq = Opal.eqeqeq, $send2 = Opal.send2, $find_super = Opal.find_super;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$irb?', '$compiler', '$top?', '$scope', '$using_irb?', '$push', '$to_s', '$var_name', '$with_temp', '$property', '$wrap', '$add_local', '$expr', '$value', '$recv?', '$expr?', '$[]', '$name', '$add_ivar', '$helper', '$add_gvar', '$===', '$handle_global_match', '$handle_post_match', '$handle_pre_match', '$raise', '$index', '$stmt?', '$class_variable_owner', '$inspect']);
+  Opal.add_stubs('require,handle,children,irb?,compiler,top?,scope,using_irb?,push,to_s,var_name,with_temp,property,wrap,add_local,expr,value,expr?,recv?,[],name,add_ivar,self,helper,add_gvar,===,handle_global_match,handle_post_match,handle_pre_match,raise,index,stmt?,class_variable_owner,inspect');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -32074,19 +29184,18 @@ Opal.modules["opal/nodes/variables"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
-      (function($base, $super, $parent_nesting) {
+      (function($base, $super) {
         var self = $klass($base, $super, 'LocalVariableNode');
 
-        var $nesting = [self].concat($parent_nesting), $LocalVariableNode_using_irb$ques$1, $LocalVariableNode_compile$2;
-
+        
         
         self.$handle("lvar");
         self.$children("var_name");
         
-        Opal.def(self, '$using_irb?', $LocalVariableNode_using_irb$ques$1 = function() {
+        $def(self, '$using_irb?', function $LocalVariableNode_using_irb$ques$1() {
           var self = this, $ret_or_1 = nil;
 
           if ($truthy(($ret_or_1 = self.$compiler()['$irb?']()))) {
@@ -32094,338 +29203,295 @@ Opal.modules["opal/nodes/variables"] = function(Opal) {
           } else {
             return $ret_or_1
           }
-        }, $LocalVariableNode_using_irb$ques$1.$$arity = 0);
-        return (Opal.def(self, '$compile', $LocalVariableNode_compile$2 = function $$compile() {
-          var $$3, self = this;
+        }, 0);
+        return $def(self, '$compile', function $$compile() {
+          var self = this;
 
           
-          if ($truthy(self['$using_irb?']())) {
-          } else {
+          if (!$truthy(self['$using_irb?']())) {
             return self.$push(self.$var_name().$to_s())
           };
-          return $send(self, 'with_temp', [], ($$3 = function(tmp){var self = $$3.$$s == null ? this : $$3.$$s;
+          return $send(self, 'with_temp', [], function $$2(tmp){var self = $$2.$$s == null ? this : $$2.$$s;
 
             
             
-            if (tmp == null) {
-              tmp = nil;
-            };
+            if (tmp == null) tmp = nil;;
             self.$push(self.$property(self.$var_name().$to_s()));
-            return self.$wrap("" + "((" + (tmp) + " = Opal.irb_vars", "" + ") == null ? nil : " + (tmp) + ")");}, $$3.$$s = self, $$3.$$arity = 1, $$3));
-        }, $LocalVariableNode_compile$2.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+            return self.$wrap("((" + (tmp) + " = Opal.irb_vars", ") == null ? nil : " + (tmp) + ")");}, {$$arity: 1, $$s: self});
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'LocalAssignNode');
 
-        var $nesting = [self].concat($parent_nesting), $LocalAssignNode_using_irb$ques$4, $LocalAssignNode_compile$5;
-
+        
         
         self.$handle("lvasgn");
         self.$children("var_name", "value");
         
-        Opal.def(self, '$using_irb?', $LocalAssignNode_using_irb$ques$4 = function() {
-          var self = this, $ret_or_2 = nil;
+        $def(self, '$using_irb?', function $LocalAssignNode_using_irb$ques$3() {
+          var self = this, $ret_or_1 = nil;
 
-          if ($truthy(($ret_or_2 = self.$compiler()['$irb?']()))) {
+          if ($truthy(($ret_or_1 = self.$compiler()['$irb?']()))) {
             return self.$scope()['$top?']()
           } else {
-            return $ret_or_2
+            return $ret_or_1
           }
-        }, $LocalAssignNode_using_irb$ques$4.$$arity = 0);
-        return (Opal.def(self, '$compile', $LocalAssignNode_compile$5 = function $$compile() {
-          var self = this, $ret_or_3 = nil, $ret_or_4 = nil;
+        }, 0);
+        return $def(self, '$compile', function $$compile() {
+          var self = this;
 
           
           if ($truthy(self['$using_irb?']())) {
-            self.$push("" + "Opal.irb_vars" + (self.$property(self.$var_name().$to_s())) + " = ")
+            self.$push("Opal.irb_vars" + (self.$property(self.$var_name().$to_s())) + " = ")
           } else {
             
             self.$add_local(self.$var_name().$to_s());
             self.$push("" + (self.$var_name()) + " = ");
           };
           self.$push(self.$expr(self.$value()));
-          if ($truthy((function() {if ($truthy(($ret_or_3 = (function() {if ($truthy(($ret_or_4 = self['$recv?']()))) {
-            return $ret_or_4
-          } else {
-            return self['$expr?']()
-          }; return nil; })()))) {
-            return self.$value()
-          } else {
-            return $ret_or_3
-          }; return nil; })())) {
+          if ((($truthy(self['$recv?']()) || ($truthy(self['$expr?']()))) && ($truthy(self.$value())))) {
             return self.$wrap("(", ")")
           } else {
             return nil
           };
-        }, $LocalAssignNode_compile$5.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'LocalDeclareNode');
 
-        var $nesting = [self].concat($parent_nesting), $LocalDeclareNode_compile$6;
-
+        
         
         self.$handle("lvdeclare");
         self.$children("var_name");
-        return (Opal.def(self, '$compile', $LocalDeclareNode_compile$6 = function $$compile() {
+        return $def(self, '$compile', function $$compile() {
           var self = this;
 
           
           self.$add_local(self.$var_name().$to_s());
           return nil;
-        }, $LocalDeclareNode_compile$6.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'InstanceVariableNode');
 
-        var $nesting = [self].concat($parent_nesting), $InstanceVariableNode_var_name$7, $InstanceVariableNode_compile$8;
-
+        
         
         self.$handle("ivar");
         self.$children("name");
         
-        Opal.def(self, '$var_name', $InstanceVariableNode_var_name$7 = function $$var_name() {
+        $def(self, '$var_name', function $$var_name() {
           var self = this;
 
           return self.$name().$to_s()['$[]']($range(1, -1, false))
-        }, $InstanceVariableNode_var_name$7.$$arity = 0);
-        return (Opal.def(self, '$compile', $InstanceVariableNode_compile$8 = function $$compile() {
+        }, 0);
+        return $def(self, '$compile', function $$compile() {
           var self = this, name = nil;
 
           
           name = self.$property(self.$var_name());
           self.$add_ivar(name);
-          return self.$push("" + "self" + (name));
-        }, $InstanceVariableNode_compile$8.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+          return self.$push("" + (self.$scope().$self()) + (name));
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'InstanceAssignNode');
 
-        var $nesting = [self].concat($parent_nesting), $InstanceAssignNode_var_name$9, $InstanceAssignNode_compile$10;
-
+        
         
         self.$handle("ivasgn");
         self.$children("name", "value");
         
-        Opal.def(self, '$var_name', $InstanceAssignNode_var_name$9 = function $$var_name() {
+        $def(self, '$var_name', function $$var_name() {
           var self = this;
 
           return self.$name().$to_s()['$[]']($range(1, -1, false))
-        }, $InstanceAssignNode_var_name$9.$$arity = 0);
-        return (Opal.def(self, '$compile', $InstanceAssignNode_compile$10 = function $$compile() {
-          var self = this, name = nil, $ret_or_5 = nil, $ret_or_6 = nil;
+        }, 0);
+        return $def(self, '$compile', function $$compile() {
+          var self = this, name = nil;
 
           
           name = self.$property(self.$var_name());
-          self.$push("" + "self" + (name) + " = ");
+          self.$push("" + (self.$scope().$self()) + (name) + " = ");
           self.$push(self.$expr(self.$value()));
-          if ($truthy((function() {if ($truthy(($ret_or_5 = (function() {if ($truthy(($ret_or_6 = self['$recv?']()))) {
-            return $ret_or_6
-          } else {
-            return self['$expr?']()
-          }; return nil; })()))) {
-            return self.$value()
-          } else {
-            return $ret_or_5
-          }; return nil; })())) {
+          if ((($truthy(self['$recv?']()) || ($truthy(self['$expr?']()))) && ($truthy(self.$value())))) {
             return self.$wrap("(", ")")
           } else {
             return nil
           };
-        }, $InstanceAssignNode_compile$10.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'GlobalVariableNode');
 
-        var $nesting = [self].concat($parent_nesting), $GlobalVariableNode_var_name$11, $GlobalVariableNode_compile$12;
-
+        
         
         self.$handle("gvar");
         self.$children("name");
         
-        Opal.def(self, '$var_name', $GlobalVariableNode_var_name$11 = function $$var_name() {
+        $def(self, '$var_name', function $$var_name() {
           var self = this;
 
           return self.$name().$to_s()['$[]']($range(1, -1, false))
-        }, $GlobalVariableNode_var_name$11.$$arity = 0);
-        return (Opal.def(self, '$compile', $GlobalVariableNode_compile$12 = function $$compile() {
+        }, 0);
+        return $def(self, '$compile', function $$compile() {
           var self = this, name = nil;
 
           
           self.$helper("gvars");
           name = self.$property(self.$var_name());
           self.$add_gvar(name);
-          return self.$push("" + "$gvars" + (name));
-        }, $GlobalVariableNode_compile$12.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
+          return self.$push("$gvars" + (name));
+        }, 0);
+      })($nesting[0], $$('Base'));
       (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'BackRefNode');
 
-        var $nesting = [self].concat($parent_nesting), $BackRefNode_compile$13, $BackRefNode_handle_global_match$14, $BackRefNode_handle_pre_match$16, $BackRefNode_handle_post_match$18;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
         
         self.$handle("back_ref");
         
-        Opal.def(self, '$compile', $BackRefNode_compile$13 = function $$compile() {
-          var $iter = $BackRefNode_compile$13.$$p, $yield = $iter || nil, self = this, $case = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        $def(self, '$compile', function $$compile() {
+          var $yield = $$compile.$$p || nil, self = this, $ret_or_1 = nil;
 
-          if ($iter) $BackRefNode_compile$13.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$compile.$$p;
           
           self.$helper("gvars");
-          return (function() {$case = self.$var_name();
-          if ("&"['$===']($case)) {return self.$handle_global_match()}
-          else if ("'"['$===']($case)) {return self.$handle_post_match()}
-          else if ("`"['$===']($case)) {return self.$handle_pre_match()}
-          else if ("+"['$===']($case)) {return $send2(self, $find_super(self, 'compile', $BackRefNode_compile$13, false, true), 'compile', $zuper, $iter)}
-          else {return self.$raise($$($nesting, 'NotImplementedError'))}})();
-        }, $BackRefNode_compile$13.$$arity = 0);
+          if ($eqeqeq("&", ($ret_or_1 = self.$var_name()))) {
+            return self.$handle_global_match()
+          } else if ($eqeqeq("'", $ret_or_1)) {
+            return self.$handle_post_match()
+          } else if ($eqeqeq("`", $ret_or_1)) {
+            return self.$handle_pre_match()
+          } else if ($eqeqeq("+", $ret_or_1)) {
+            return $send2(self, $find_super(self, 'compile', $$compile, false, true), 'compile', [], $yield)
+          } else {
+            return self.$raise($$('NotImplementedError'))
+          };
+        }, 0);
         
-        Opal.def(self, '$handle_global_match', $BackRefNode_handle_global_match$14 = function $$handle_global_match() {
-          var $$15, self = this;
+        $def(self, '$handle_global_match', function $$handle_global_match() {
+          var self = this;
 
-          return $send(self, 'with_temp', [], ($$15 = function(tmp){var self = $$15.$$s == null ? this : $$15.$$s;
+          return $send(self, 'with_temp', [], function $$4(tmp){var self = $$4.$$s == null ? this : $$4.$$s;
 
             
             
-            if (tmp == null) {
-              tmp = nil;
-            };
-            return self.$push("" + "((" + (tmp) + " = $gvars['~']) === nil ? nil : " + (tmp) + "['$[]'](0))");}, $$15.$$s = self, $$15.$$arity = 1, $$15))
-        }, $BackRefNode_handle_global_match$14.$$arity = 0);
+            if (tmp == null) tmp = nil;;
+            return self.$push("((" + (tmp) + " = $gvars['~']) === nil ? nil : " + (tmp) + "['$[]'](0))");}, {$$arity: 1, $$s: self})
+        }, 0);
         
-        Opal.def(self, '$handle_pre_match', $BackRefNode_handle_pre_match$16 = function $$handle_pre_match() {
-          var $$17, self = this;
+        $def(self, '$handle_pre_match', function $$handle_pre_match() {
+          var self = this;
 
-          return $send(self, 'with_temp', [], ($$17 = function(tmp){var self = $$17.$$s == null ? this : $$17.$$s;
+          return $send(self, 'with_temp', [], function $$5(tmp){var self = $$5.$$s == null ? this : $$5.$$s;
 
             
             
-            if (tmp == null) {
-              tmp = nil;
-            };
-            return self.$push("" + "((" + (tmp) + " = $gvars['~']) === nil ? nil : " + (tmp) + ".$pre_match())");}, $$17.$$s = self, $$17.$$arity = 1, $$17))
-        }, $BackRefNode_handle_pre_match$16.$$arity = 0);
-        return (Opal.def(self, '$handle_post_match', $BackRefNode_handle_post_match$18 = function $$handle_post_match() {
-          var $$19, self = this;
+            if (tmp == null) tmp = nil;;
+            return self.$push("((" + (tmp) + " = $gvars['~']) === nil ? nil : " + (tmp) + ".$pre_match())");}, {$$arity: 1, $$s: self})
+        }, 0);
+        return $def(self, '$handle_post_match', function $$handle_post_match() {
+          var self = this;
 
-          return $send(self, 'with_temp', [], ($$19 = function(tmp){var self = $$19.$$s == null ? this : $$19.$$s;
+          return $send(self, 'with_temp', [], function $$6(tmp){var self = $$6.$$s == null ? this : $$6.$$s;
 
             
             
-            if (tmp == null) {
-              tmp = nil;
-            };
-            return self.$push("" + "((" + (tmp) + " = $gvars['~']) === nil ? nil : " + (tmp) + ".$post_match())");}, $$19.$$s = self, $$19.$$arity = 1, $$19))
-        }, $BackRefNode_handle_post_match$18.$$arity = 0), nil) && 'handle_post_match';
-      })($nesting[0], $$($nesting, 'GlobalVariableNode'), $nesting);
-      (function($base, $super, $parent_nesting) {
+            if (tmp == null) tmp = nil;;
+            return self.$push("((" + (tmp) + " = $gvars['~']) === nil ? nil : " + (tmp) + ".$post_match())");}, {$$arity: 1, $$s: self})
+        }, 0);
+      })($nesting[0], $$('GlobalVariableNode'), $nesting);
+      (function($base, $super) {
         var self = $klass($base, $super, 'GlobalAssignNode');
 
-        var $nesting = [self].concat($parent_nesting), $GlobalAssignNode_var_name$20, $GlobalAssignNode_compile$21;
-
+        
         
         self.$handle("gvasgn");
         self.$children("name", "value");
         
-        Opal.def(self, '$var_name', $GlobalAssignNode_var_name$20 = function $$var_name() {
+        $def(self, '$var_name', function $$var_name() {
           var self = this;
 
           return self.$name().$to_s()['$[]']($range(1, -1, false))
-        }, $GlobalAssignNode_var_name$20.$$arity = 0);
-        return (Opal.def(self, '$compile', $GlobalAssignNode_compile$21 = function $$compile() {
-          var self = this, name = nil, $ret_or_7 = nil, $ret_or_8 = nil;
+        }, 0);
+        return $def(self, '$compile', function $$compile() {
+          var self = this, name = nil;
 
           
           self.$helper("gvars");
           name = self.$property(self.$var_name());
-          self.$push("" + "$gvars" + (name) + " = ");
+          self.$push("$gvars" + (name) + " = ");
           self.$push(self.$expr(self.$value()));
-          if ($truthy((function() {if ($truthy(($ret_or_7 = (function() {if ($truthy(($ret_or_8 = self['$recv?']()))) {
-            return $ret_or_8
-          } else {
-            return self['$expr?']()
-          }; return nil; })()))) {
-            return self.$value()
-          } else {
-            return $ret_or_7
-          }; return nil; })())) {
+          if ((($truthy(self['$recv?']()) || ($truthy(self['$expr?']()))) && ($truthy(self.$value())))) {
             return self.$wrap("(", ")")
           } else {
             return nil
           };
-        }, $GlobalAssignNode_compile$21.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'NthrefNode');
 
-        var $nesting = [self].concat($parent_nesting), $NthrefNode_compile$22;
-
+        
         
         self.$handle("nth_ref");
         self.$children("index");
-        return (Opal.def(self, '$compile', $NthrefNode_compile$22 = function $$compile() {
-          var $$23, self = this;
+        return $def(self, '$compile', function $$compile() {
+          var self = this;
 
           
           self.$helper("gvars");
-          return $send(self, 'with_temp', [], ($$23 = function(tmp){var self = $$23.$$s == null ? this : $$23.$$s;
+          return $send(self, 'with_temp', [], function $$7(tmp){var self = $$7.$$s == null ? this : $$7.$$s;
 
             
             
-            if (tmp == null) {
-              tmp = nil;
-            };
-            return self.$push("" + "((" + (tmp) + " = $gvars['~']) === nil ? nil : " + (tmp) + "['$[]'](" + (self.$index()) + "))");}, $$23.$$s = self, $$23.$$arity = 1, $$23));
-        }, $NthrefNode_compile$22.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+            if (tmp == null) tmp = nil;;
+            return self.$push("((" + (tmp) + " = $gvars['~']) === nil ? nil : " + (tmp) + "['$[]'](" + (self.$index()) + "))");}, {$$arity: 1, $$s: self});
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'ClassVariableNode');
 
-        var $nesting = [self].concat($parent_nesting), $ClassVariableNode_compile$24;
-
+        
         
         self.$handle("cvar");
         self.$children("name");
-        return (Opal.def(self, '$compile', $ClassVariableNode_compile$24 = function $$compile() {
+        return $def(self, '$compile', function $$compile() {
           var self = this, tolerant = nil;
 
           
           self.$helper("class_variable_get");
           tolerant = false;
           if ($truthy(self['$stmt?']())) {
-            tolerant = true};
-          return self.$push("" + "$class_variable_get(" + (self.$class_variable_owner()) + ", '" + (self.$name()) + "', " + (tolerant.$inspect()) + ")");
-        }, $ClassVariableNode_compile$24.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      return (function($base, $super, $parent_nesting) {
+            tolerant = true
+          };
+          return self.$push("$class_variable_get(" + (self.$class_variable_owner()) + ", '" + (self.$name()) + "', " + (tolerant.$inspect()) + ")");
+        }, 0);
+      })($nesting[0], $$('Base'));
+      return (function($base, $super) {
         var self = $klass($base, $super, 'ClassVarAssignNode');
 
-        var $nesting = [self].concat($parent_nesting), $ClassVarAssignNode_compile$25;
-
+        
         
         self.$handle("cvasgn");
         self.$children("name", "value");
-        return (Opal.def(self, '$compile', $ClassVarAssignNode_compile$25 = function $$compile() {
+        return $def(self, '$compile', function $$compile() {
           var self = this;
 
           
           self.$helper("class_variable_set");
-          return self.$push("" + "$class_variable_set(" + (self.$class_variable_owner()) + ", '" + (self.$name()) + "', ", self.$expr(self.$value()), ")");
-        }, $ClassVarAssignNode_compile$25.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
+          return self.$push("$class_variable_set(" + (self.$class_variable_owner()) + ", '" + (self.$name()) + "', ", self.$expr(self.$value()), ")");
+        }, 0);
+      })($nesting[0], $$('Base'));
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/constants"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy;
+Opal.modules["opal/nodes/constants"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $eqeq = Opal.eqeq, $def = Opal.def, $const_set = Opal.const_set;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$magical_data_const?', '$push', '$const_scope', '$recv', '$name', '$eval?', '$compiler', '$nil?', '$==', '$eof_content', '$base', '$expr', '$value']);
+  Opal.add_stubs('require,handle,children,magical_data_const?,push,optimized_access?,helper,name,==,const_scope,s,absolute_const,top_scope,recv,eval?,compiler,relative_access,scope,nil?,eof_content,freeze,include?,base,expr,value,nesting');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -32436,95 +29502,101 @@ Opal.modules["opal/nodes/constants"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
       (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'ConstNode');
 
-        var $nesting = [self].concat($parent_nesting), $ConstNode_compile$1, $ConstNode_magical_data_const$ques$2;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
         
         self.$handle("const");
         self.$children("const_scope", "name");
         
-        Opal.def(self, '$compile', $ConstNode_compile$1 = function $$compile() {
+        $def(self, '$compile', function $$compile() {
           var self = this;
 
           if ($truthy(self['$magical_data_const?']())) {
             return self.$push("$__END__")
+          } else if ($truthy(self['$optimized_access?']())) {
+            
+            self.$helper("" + (self.$name()));
+            return self.$push("$" + (self.$name()));
+          } else if ($eqeq(self.$const_scope(), self.$s("cbase"))) {
+            return self.$push("" + (self.$top_scope().$absolute_const()) + "('" + (self.$name()) + "')")
           } else if ($truthy(self.$const_scope())) {
-            return self.$push("$$$(", self.$recv(self.$const_scope()), "" + ", '" + (self.$name()) + "')")
+            return self.$push("" + (self.$top_scope().$absolute_const()) + "(", self.$recv(self.$const_scope()), ", '" + (self.$name()) + "')")
           } else if ($truthy(self.$compiler()['$eval?']())) {
-            return self.$push("" + "$$($nesting, '" + (self.$name()) + "')")
+            return self.$push("" + (self.$scope().$relative_access()) + "('" + (self.$name()) + "')")
           } else {
-            return self.$push("" + "$$($nesting, '" + (self.$name()) + "')")
+            return self.$push("" + (self.$scope().$relative_access()) + "('" + (self.$name()) + "')")
           }
-        }, $ConstNode_compile$1.$$arity = 0);
-        return (Opal.def(self, '$magical_data_const?', $ConstNode_magical_data_const$ques$2 = function() {
+        }, 0);
+        
+        $def(self, '$magical_data_const?', function $ConstNode_magical_data_const$ques$1() {
           var self = this, $ret_or_1 = nil, $ret_or_2 = nil;
 
-          if ($truthy(($ret_or_1 = (function() {if ($truthy(($ret_or_2 = self.$const_scope()['$nil?']()))) {
-            return self.$name()['$==']("DATA")
-          } else {
-            return $ret_or_2
-          }; return nil; })()))) {
-            return self.$compiler().$eof_content()
+          if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = self.$const_scope()['$nil?']())) ? (self.$name()['$==']("DATA")) : ($ret_or_2))))) {
+            return self.$compiler().$eof_content()
+          } else {
+            return $ret_or_1
+          }
+        }, 0);
+        $const_set($nesting[0], 'OPTIMIZED_ACCESS_CONSTS', ["BasicObject", "Object", "Module", "Class", "Opal", "Kernel", "NilClass"].$freeze());
+        return $def(self, '$optimized_access?', function $ConstNode_optimized_access$ques$2() {
+          var self = this, $ret_or_1 = nil;
+
+          if ($truthy(($ret_or_1 = self.$const_scope()['$=='](self.$s("cbase"))))) {
+            return $$('OPTIMIZED_ACCESS_CONSTS')['$include?'](self.$name())
           } else {
             return $ret_or_1
           }
-        }, $ConstNode_magical_data_const$ques$2.$$arity = 0), nil) && 'magical_data_const?';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('Base'), $nesting);
+      (function($base, $super) {
         var self = $klass($base, $super, 'CbaseNode');
 
-        var $nesting = [self].concat($parent_nesting), $CbaseNode_compile$3;
-
+        
         
         self.$handle("cbase");
-        return (Opal.def(self, '$compile', $CbaseNode_compile$3 = function $$compile() {
+        return $def(self, '$compile', function $$compile() {
           var self = this;
 
           return self.$push("'::'")
-        }, $CbaseNode_compile$3.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      return (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('Base'));
+      return (function($base, $super) {
         var self = $klass($base, $super, 'ConstAssignNode');
 
-        var $nesting = [self].concat($parent_nesting), $ConstAssignNode_compile$4;
-
+        
         
         self.$handle("casgn");
         self.$children("base", "name", "value");
-        return (Opal.def(self, '$compile', $ConstAssignNode_compile$4 = function $$compile() {
+        return $def(self, '$compile', function $$compile() {
           var self = this;
 
+          
+          self.$helper("const_set");
           if ($truthy(self.$base())) {
-            return self.$push("Opal.const_set(", self.$expr(self.$base()), "" + ", '" + (self.$name()) + "', ", self.$expr(self.$value()), ")")
+            return self.$push("$const_set(", self.$expr(self.$base()), ", '" + (self.$name()) + "', ", self.$expr(self.$value()), ")")
           } else {
-            return self.$push("" + "Opal.const_set($nesting[0], '" + (self.$name()) + "', ", self.$expr(self.$value()), ")")
-          }
-        }, $ConstAssignNode_compile$4.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
+            return self.$push("$const_set(" + (self.$scope().$nesting()) + "[0], '" + (self.$name()) + "', ", self.$expr(self.$value()), ")")
+          };
+        }, 0);
+      })($nesting[0], $$('Base'));
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/comparable"] = function(Opal) {
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $falsy = Opal.falsy, $module = Opal.module, $truthy = Opal.truthy;
+Opal.modules["corelib/comparable"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var nil = Opal.nil, $$$ = Opal.$$$, $truthy = Opal.truthy, $module = Opal.module, $rb_gt = Opal.rb_gt, $rb_lt = Opal.rb_lt, $eqeqeq = Opal.eqeqeq, $Kernel = Opal.Kernel, $def = Opal.def;
 
-  Opal.add_stubs(['$>', '$<', '$===', '$raise', '$class', '$<=>', '$equal?']);
-  return (function($base, $parent_nesting) {
+  Opal.add_stubs('>,<,===,raise,class,<=>,equal?');
+  return (function($base) {
     var self = $module($base, 'Comparable');
 
-    var $nesting = [self].concat($parent_nesting), $Comparable_$eq_eq$1, $Comparable_$gt$2, $Comparable_$gt_eq$3, $Comparable_$lt$4, $Comparable_$lt_eq$5, $Comparable_between$ques$6, $Comparable_clamp$7, $case = nil;
+    var $ret_or_1 = nil;
 
     
     
@@ -32538,25 +29610,24 @@ Opal.modules["corelib/comparable"] = function(Opal) {
 
     function fail_comparison(lhs, rhs) {
       var class_name;
-      (function() {$case = rhs;
-    if (nil['$===']($case) || true['$===']($case) || false['$===']($case) || $$($nesting, 'Integer')['$===']($case) || $$($nesting, 'Float')['$===']($case)) {return class_name = rhs.$inspect();}
-    else {return class_name = rhs.$$class;}})()
-      self.$raise($$($nesting, 'ArgumentError'), "" + "comparison of " + ((lhs).$class()) + " with " + (class_name) + " failed")
+      (($eqeqeq(nil, ($ret_or_1 = rhs)) || (($eqeqeq(true, $ret_or_1) || (($eqeqeq(false, $ret_or_1) || (($eqeqeq($$$('Integer'), $ret_or_1) || ($eqeqeq($$$('Float'), $ret_or_1))))))))) ? (class_name = rhs.$inspect()) : (class_name = rhs.$$class))
+      $Kernel.$raise($$$('ArgumentError'), "comparison of " + ((lhs).$class()) + " with " + (class_name) + " failed")
     }
 
     function cmp_or_fail(lhs, rhs) {
       var cmp = (lhs)['$<=>'](rhs);
-      if ($falsy(cmp)) fail_comparison(lhs, rhs);
+      if (!$truthy(cmp)) fail_comparison(lhs, rhs);
       return normalize(cmp);
     }
   ;
     
-    Opal.def(self, '$==', $Comparable_$eq_eq$1 = function(other) {
+    $def(self, '$==', function $Comparable_$eq_eq$1(other) {
       var self = this, cmp = nil;
 
       
       if ($truthy(self['$equal?'](other))) {
-        return true};
+        return true
+      };
       
       if (self["$<=>"] == Opal.Kernel["$<=>"]) {
         return false;
@@ -32568,55 +29639,54 @@ Opal.modules["corelib/comparable"] = function(Opal) {
         return false;
       }
     ;
-      if ($truthy((cmp = self['$<=>'](other)))) {
-      } else {
+      if (!$truthy((cmp = self['$<=>'](other)))) {
         return false
       };
       return normalize(cmp) == 0;;
-    }, $Comparable_$eq_eq$1.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$>', $Comparable_$gt$2 = function(other) {
+    $def(self, '$>', function $Comparable_$gt$2(other) {
       var self = this;
 
       return cmp_or_fail(self, other) > 0;
-    }, $Comparable_$gt$2.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$>=', $Comparable_$gt_eq$3 = function(other) {
+    $def(self, '$>=', function $Comparable_$gt_eq$3(other) {
       var self = this;
 
       return cmp_or_fail(self, other) >= 0;
-    }, $Comparable_$gt_eq$3.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$<', $Comparable_$lt$4 = function(other) {
+    $def(self, '$<', function $Comparable_$lt$4(other) {
       var self = this;
 
       return cmp_or_fail(self, other) < 0;
-    }, $Comparable_$lt$4.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$<=', $Comparable_$lt_eq$5 = function(other) {
+    $def(self, '$<=', function $Comparable_$lt_eq$5(other) {
       var self = this;
 
       return cmp_or_fail(self, other) <= 0;
-    }, $Comparable_$lt_eq$5.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$between?', $Comparable_between$ques$6 = function(min, max) {
+    $def(self, '$between?', function $Comparable_between$ques$6(min, max) {
       var self = this;
 
       
       if ($rb_lt(self, min)) {
-        return false};
+        return false
+      };
       if ($rb_gt(self, max)) {
-        return false};
+        return false
+      };
       return true;
-    }, $Comparable_between$ques$6.$$arity = 2);
-    return (Opal.def(self, '$clamp', $Comparable_clamp$7 = function $$clamp(min, max) {
+    }, 2);
+    return $def(self, '$clamp', function $$clamp(min, max) {
       var self = this;
 
       
       
-      if (max == null) {
-        max = nil;
-      };
+      if (max == null) max = nil;;
       
       var c, excl;
 
@@ -32625,7 +29695,7 @@ Opal.modules["corelib/comparable"] = function(Opal) {
         // provide a single Range argument instead of 2 Comparables.
 
         if (!Opal.is_a(min, Opal.Range)) {
-          self.$raise($$($nesting, 'TypeError'), "" + "wrong argument type " + (min.$class()) + " (expected Range)")
+          $Kernel.$raise($$$('TypeError'), "wrong argument type " + (min.$class()) + " (expected Range)")
         }
 
         excl = min.excl;
@@ -32633,12 +29703,12 @@ Opal.modules["corelib/comparable"] = function(Opal) {
         min = min.begin;
 
         if (max !== nil && excl) {
-          self.$raise($$($nesting, 'ArgumentError'), "cannot clamp with an exclusive range")
+          $Kernel.$raise($$$('ArgumentError'), "cannot clamp with an exclusive range")
         }
       }
 
       if (min !== nil && max !== nil && cmp_or_fail(min, max) > 0) {
-        self.$raise($$($nesting, 'ArgumentError'), "min argument must be smaller than max argument")
+        $Kernel.$raise($$$('ArgumentError'), "min argument must be smaller than max argument")
       }
 
       if (min !== nil) {
@@ -32656,156 +29726,153 @@ Opal.modules["corelib/comparable"] = function(Opal) {
 
       return self;
     ;
-    }, $Comparable_clamp$7.$$arity = -2), nil) && 'clamp';
-  })($nesting[0], $nesting)
+    }, -2);
+  })('::')
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["pathname"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send, $alias = Opal.alias, $module = Opal.module;
+Opal.modules["pathname"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $const_set = Opal.const_set, $regexp = Opal.regexp, $eqeqeq = Opal.eqeqeq, $truthy = Opal.truthy, $eqeq = Opal.eqeq, $def = Opal.def, $defs = Opal.defs, $to_ary = Opal.to_ary, $send = Opal.send, $to_a = Opal.to_a, $neqeq = Opal.neqeq, $rb_plus = Opal.rb_plus, $not = Opal.not, $alias = Opal.alias, $module = Opal.module;
 
-  Opal.add_stubs(['$require', '$include', '$quote', '$===', '$to_s', '$path', '$respond_to?', '$to_path', '$is_a?', '$nil?', '$raise', '$class', '$==', '$attr_reader', '$!', '$relative?', '$chop_basename', '$basename', '$=~', '$new', '$source', '$[]', '$rindex', '$sub', '$absolute?', '$expand_path', '$plus', '$unshift', '$length', '$!=', '$empty?', '$first', '$shift', '$+', '$join', '$dirname', '$pop', '$reverse_each', '$directory?', '$extname', '$<=>', '$nonzero?', '$proc', '$casecmp', '$cleanpath', '$inspect', '$include?', '$fill', '$map', '$entries']);
+  Opal.add_stubs('require,include,quote,===,to_s,path,respond_to?,to_path,is_a?,nil?,raise,class,==,new,pwd,attr_reader,!,relative?,chop_basename,basename,=~,source,[],rindex,sub,absolute?,expand_path,plus,unshift,length,!=,empty?,first,shift,+,join,dirname,pop,reverse_each,directory?,extname,<=>,nonzero?,proc,casecmp,cleanpath,inspect,include?,fill,map,entries');
   
   self.$require("corelib/comparable");
   (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Pathname');
 
-    var $nesting = [self].concat($parent_nesting), $Pathname_initialize$1, $Pathname_$eq_eq$2, $Pathname_absolute$ques$3, $Pathname_relative$ques$4, $Pathname_chop_basename$5, $Pathname_root$ques$6, $Pathname_parent$7, $Pathname_sub$8, $Pathname_cleanpath$9, $Pathname_to_path$10, $Pathname_hash$11, $Pathname_expand_path$12, $Pathname_$plus$13, $Pathname_plus$14, $Pathname_join$15, $Pathname_split$17, $Pathname_dirname$18, $Pathname_basename$19, $Pathname_directory$ques$20, $Pathname_extname$21, $Pathname_$lt_eq_gt$22, $Pathname$23, $Pathname$24, $Pathname_relative_path_from$25, $Pathname_entries$26;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-    self.$$prototype.path = nil;
+    $proto.path = nil;
     
-    self.$include($$($nesting, 'Comparable'));
-    Opal.const_set($nesting[0], 'SEPARATOR_PAT', Opal.regexp([$$($nesting, 'Regexp').$quote($$$($$($nesting, 'File'), 'SEPARATOR'))]));
+    self.$include($$('Comparable'));
+    $const_set($nesting[0], 'SEPARATOR_PAT', $regexp([$$('Regexp').$quote($$$($$('File'), 'SEPARATOR'))]));
     
-    Opal.def(self, '$initialize', $Pathname_initialize$1 = function $$initialize(path) {
+    $def(self, '$initialize', function $$initialize(path) {
       var self = this;
 
       
-      if ($truthy($$($nesting, 'Pathname')['$==='](path))) {
+      if ($eqeqeq($$('Pathname'), path)) {
         self.path = path.$path().$to_s()
       } else if ($truthy(path['$respond_to?']("to_path"))) {
         self.path = path.$to_path()
-      } else if ($truthy(path['$is_a?']($$($nesting, 'String')))) {
+      } else if ($truthy(path['$is_a?']($$('String')))) {
         self.path = path
       } else if ($truthy(path['$nil?']())) {
-        self.$raise($$($nesting, 'TypeError'), "no implicit conversion of nil into String")
+        self.$raise($$('TypeError'), "no implicit conversion of nil into String")
       } else {
-        self.$raise($$($nesting, 'TypeError'), "" + "no implicit conversion of " + (path.$class()) + " into String")
+        self.$raise($$('TypeError'), "no implicit conversion of " + (path.$class()) + " into String")
       };
-      if (self.path['$==']("\u0000")) {
-        return self.$raise($$($nesting, 'ArgumentError'))
+      if ($eqeq(self.path, "\u0000")) {
+        return self.$raise($$('ArgumentError'))
       } else {
         return nil
       };
-    }, $Pathname_initialize$1.$$arity = 1);
+    }, 1);
+    $defs(self, '$pwd', function $$pwd() {
+      var self = this;
+
+      return self.$new($$('Dir').$pwd())
+    }, 0);
     self.$attr_reader("path");
     
-    Opal.def(self, '$==', $Pathname_$eq_eq$2 = function(other) {
+    $def(self, '$==', function $Pathname_$eq_eq$1(other) {
       var self = this;
 
       return other.$path()['$=='](self.path)
-    }, $Pathname_$eq_eq$2.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$absolute?', $Pathname_absolute$ques$3 = function() {
+    $def(self, '$absolute?', function $Pathname_absolute$ques$2() {
       var self = this;
 
       return self['$relative?']()['$!']()
-    }, $Pathname_absolute$ques$3.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$relative?', $Pathname_relative$ques$4 = function() {
+    $def(self, '$relative?', function $Pathname_relative$ques$3() {
       var $a, $b, $c, self = this, path = nil, r = nil;
 
       
       path = self.path;
       while ($truthy((r = self.$chop_basename(path)))) {
-        $c = r, $b = Opal.to_ary($c), (path = ($b[0] == null ? nil : $b[0])), $c
+        $c = r, $b = $to_ary($c), (path = ($b[0] == null ? nil : $b[0])), $c
       };
       return path['$==']("");
-    }, $Pathname_relative$ques$4.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$chop_basename', $Pathname_chop_basename$5 = function $$chop_basename(path) {
-      var self = this, base = nil;
+    $def(self, '$chop_basename', function $$chop_basename(path) {
+      var base = nil;
 
       
-      base = $$($nesting, 'File').$basename(path);
-      if ($truthy($$($nesting, 'Regexp').$new("" + "^" + ($$$($$($nesting, 'Pathname'), 'SEPARATOR_PAT').$source()) + "?$")['$=~'](base))) {
+      base = $$('File').$basename(path);
+      if ($truthy($$('Regexp').$new("^" + ($$$($$('Pathname'), 'SEPARATOR_PAT').$source()) + "?$")['$=~'](base))) {
         return nil
       } else {
         return [path['$[]'](0, path.$rindex(base)), base]
       };
-    }, $Pathname_chop_basename$5.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$root?', $Pathname_root$ques$6 = function() {
+    $def(self, '$root?', function $Pathname_root$ques$4() {
       var self = this;
 
       return self.path['$==']("/")
-    }, $Pathname_root$ques$6.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$parent', $Pathname_parent$7 = function $$parent() {
+    $def(self, '$parent', function $$parent() {
       var self = this, new_path = nil;
 
       
       new_path = self.path.$sub(/\/([^\/]+\/?$)/, "");
-      if (new_path['$==']("")) {
-        new_path = (function() {if ($truthy(self['$absolute?']())) {
-          return "/"
-        } else {
-          return "."
-        }; return nil; })()};
-      return $$($nesting, 'Pathname').$new(new_path);
-    }, $Pathname_parent$7.$$arity = 0);
+      if ($eqeq(new_path, "")) {
+        new_path = ($truthy(self['$absolute?']()) ? ("/") : ("."))
+      };
+      return $$('Pathname').$new(new_path);
+    }, 0);
     
-    Opal.def(self, '$sub', $Pathname_sub$8 = function $$sub($a) {
+    $def(self, '$sub', function $$sub($a) {
       var $post_args, args, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
-      return $$($nesting, 'Pathname').$new($send(self.path, 'sub', Opal.to_a(args)));
-    }, $Pathname_sub$8.$$arity = -1);
+      return $$('Pathname').$new($send(self.path, 'sub', $to_a(args)));
+    }, -1);
     
-    Opal.def(self, '$cleanpath', $Pathname_cleanpath$9 = function $$cleanpath() {
+    $def(self, '$cleanpath', function $$cleanpath() {
       var self = this;
 
       return Opal.normalize(self.path)
-    }, $Pathname_cleanpath$9.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_path', $Pathname_to_path$10 = function $$to_path() {
+    $def(self, '$to_path', function $$to_path() {
       var self = this;
 
       return self.path
-    }, $Pathname_to_path$10.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$hash', $Pathname_hash$11 = function $$hash() {
+    $def(self, '$hash', function $$hash() {
       var self = this;
 
       return self.path
-    }, $Pathname_hash$11.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$expand_path', $Pathname_expand_path$12 = function $$expand_path() {
+    $def(self, '$expand_path', function $$expand_path() {
       var self = this;
 
-      return $$($nesting, 'Pathname').$new($$($nesting, 'File').$expand_path(self.path))
-    }, $Pathname_expand_path$12.$$arity = 0);
+      return $$('Pathname').$new($$('File').$expand_path(self.path))
+    }, 0);
     
-    Opal.def(self, '$+', $Pathname_$plus$13 = function(other) {
+    $def(self, '$+', function $Pathname_$plus$5(other) {
       var self = this;
 
       
-      if ($truthy($$($nesting, 'Pathname')['$==='](other))) {
-      } else {
-        other = $$($nesting, 'Pathname').$new(other)
+      if (!$eqeqeq($$('Pathname'), other)) {
+        other = $$('Pathname').$new(other)
       };
-      return $$($nesting, 'Pathname').$new(self.$plus(self.path, other.$to_s()));
-    }, $Pathname_$plus$13.$$arity = 1);
+      return $$('Pathname').$new(self.$plus(self.path, other.$to_s()));
+    }, 1);
     
-    Opal.def(self, '$plus', $Pathname_plus$14 = function $$plus(path1, path2) {
-      var $a, $b, $c, self = this, prefix2 = nil, index_list2 = nil, basename_list2 = nil, r2 = nil, basename2 = nil, prefix1 = nil, $ret_or_1 = nil, r1 = nil, basename1 = nil, $ret_or_2 = nil, $ret_or_3 = nil, $ret_or_4 = nil, $ret_or_5 = nil, suffix2 = nil;
+    $def(self, '$plus', function $$plus(path1, path2) {
+      var $a, $b, $c, self = this, prefix2 = nil, index_list2 = nil, basename_list2 = nil, r2 = nil, basename2 = nil, prefix1 = nil, $ret_or_1 = nil, r1 = nil, basename1 = nil, suffix2 = nil;
 
       
       prefix2 = path2;
@@ -32813,184 +29880,146 @@ Opal.modules["pathname"] = function(Opal) {
       basename_list2 = [];
       while ($truthy((r2 = self.$chop_basename(prefix2)))) {
         
-        $c = r2, $b = Opal.to_ary($c), (prefix2 = ($b[0] == null ? nil : $b[0])), (basename2 = ($b[1] == null ? nil : $b[1])), $c;
+        $c = r2, $b = $to_ary($c), (prefix2 = ($b[0] == null ? nil : $b[0])), (basename2 = ($b[1] == null ? nil : $b[1])), $c;
         index_list2.$unshift(prefix2.$length());
         basename_list2.$unshift(basename2);
       };
-      if ($truthy(prefix2['$!='](""))) {
-        return path2};
+      if ($neqeq(prefix2, "")) {
+        return path2
+      };
       prefix1 = path1;
       while ($truthy(true)) {
         
-        while ($truthy((function() {if ($truthy(($ret_or_1 = basename_list2['$empty?']()['$!']()))) {
-          return basename_list2.$first()['$=='](".")
-        } else {
-          return $ret_or_1
-        }; return nil; })())) {
+        while ($truthy(($truthy(($ret_or_1 = basename_list2['$empty?']()['$!']())) ? (basename_list2.$first()['$=='](".")) : ($ret_or_1)))) {
           
           index_list2.$shift();
           basename_list2.$shift();
         };
-        if ($truthy((r1 = self.$chop_basename(prefix1)))) {
-        } else {
+        if (!$truthy((r1 = self.$chop_basename(prefix1)))) {
           break;
         };
-        $c = r1, $b = Opal.to_ary($c), (prefix1 = ($b[0] == null ? nil : $b[0])), (basename1 = ($b[1] == null ? nil : $b[1])), $c;
-        if (basename1['$=='](".")) {
-          continue;};
-        if ($truthy((function() {if ($truthy(($ret_or_2 = (function() {if ($truthy(($ret_or_3 = basename1['$==']("..")))) {
-          return $ret_or_3
-        } else {
-          return basename_list2['$empty?']()
-        }; return nil; })()))) {
-          return $ret_or_2
-        } else {
-          return basename_list2.$first()['$!=']("..")
-        }; return nil; })())) {
+        $c = r1, $b = $to_ary($c), (prefix1 = ($b[0] == null ? nil : $b[0])), (basename1 = ($b[1] == null ? nil : $b[1])), $c;
+        if ($eqeq(basename1, ".")) {
+          continue;
+        };
+        if ((($eqeq(basename1, "..") || ($truthy(basename_list2['$empty?']()))) || ($neqeq(basename_list2.$first(), "..")))) {
           
           prefix1 = $rb_plus(prefix1, basename1);
-          break;;};
+          break;;
+        };
         index_list2.$shift();
         basename_list2.$shift();
       };
       r1 = self.$chop_basename(prefix1);
-      if ($truthy((function() {if ($truthy(($ret_or_4 = r1['$!']()))) {
-        return Opal.regexp([$$($nesting, 'SEPARATOR_PAT')])['$=~']($$($nesting, 'File').$basename(prefix1))
-      } else {
-        return $ret_or_4
-      }; return nil; })())) {
-        while ($truthy((function() {if ($truthy(($ret_or_5 = basename_list2['$empty?']()['$!']()))) {
-          return basename_list2.$first()['$==']("..")
-        } else {
-          return $ret_or_5
-        }; return nil; })())) {
+      if (($not(r1) && ($truthy($regexp([$$('SEPARATOR_PAT')])['$=~']($$('File').$basename(prefix1)))))) {
+        while ($truthy(($truthy(($ret_or_1 = basename_list2['$empty?']()['$!']())) ? (basename_list2.$first()['$==']("..")) : ($ret_or_1)))) {
           
           index_list2.$shift();
           basename_list2.$shift();
-        }};
-      if ($truthy(basename_list2['$empty?']()['$!']())) {
+        }
+      };
+      if ($not(basename_list2['$empty?']())) {
         
         suffix2 = path2['$[]'](Opal.Range.$new(index_list2.$first(), -1, false));
         if ($truthy(r1)) {
-          return $$($nesting, 'File').$join(prefix1, suffix2)
+          return $$('File').$join(prefix1, suffix2)
         } else {
           return $rb_plus(prefix1, suffix2)
         };
       } else if ($truthy(r1)) {
         return prefix1
       } else {
-        return $$($nesting, 'File').$dirname(prefix1)
+        return $$('File').$dirname(prefix1)
       };
-    }, $Pathname_plus$14.$$arity = 2);
+    }, 2);
     
-    Opal.def(self, '$join', $Pathname_join$15 = function $$join($a) {try {
+    $def(self, '$join', function $$join($a) {try {
 
-      var $post_args, args, $$16, self = this, result = nil;
+      var $post_args, args, self = this, result = nil;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
       if ($truthy(args['$empty?']())) {
-        return self};
+        return self
+      };
       result = args.$pop();
-      if ($truthy($$($nesting, 'Pathname')['$==='](result))) {
-      } else {
-        result = $$($nesting, 'Pathname').$new(result)
+      if (!$eqeqeq($$('Pathname'), result)) {
+        result = $$('Pathname').$new(result)
       };
       if ($truthy(result['$absolute?']())) {
-        return result};
-      $send(args, 'reverse_each', [], ($$16 = function(arg){var self = $$16.$$s == null ? this : $$16.$$s;
-
+        return result
+      };
+      $send(args, 'reverse_each', [], function $$6(arg){
         
         
-        if (arg == null) {
-          arg = nil;
-        };
-        if ($truthy($$($nesting, 'Pathname')['$==='](arg))) {
-        } else {
-          arg = $$($nesting, 'Pathname').$new(arg)
+        if (arg == null) arg = nil;;
+        if (!$eqeqeq($$('Pathname'), arg)) {
+          arg = $$('Pathname').$new(arg)
         };
         result = $rb_plus(arg, result);
         if ($truthy(result['$absolute?']())) {
           Opal.ret(result)
         } else {
           return nil
-        };}, $$16.$$s = self, $$16.$$arity = 1, $$16));
+        };}, 1);
       return $rb_plus(self, result);
       } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
-    }, $Pathname_join$15.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$split', $Pathname_split$17 = function $$split() {
+    $def(self, '$split', function $$split() {
       var self = this;
 
       return [self.$dirname(), self.$basename()]
-    }, $Pathname_split$17.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$dirname', $Pathname_dirname$18 = function $$dirname() {
+    $def(self, '$dirname', function $$dirname() {
       var self = this;
 
-      return $$($nesting, 'Pathname').$new($$($nesting, 'File').$dirname(self.path))
-    }, $Pathname_dirname$18.$$arity = 0);
+      return $$('Pathname').$new($$('File').$dirname(self.path))
+    }, 0);
     
-    Opal.def(self, '$basename', $Pathname_basename$19 = function $$basename() {
+    $def(self, '$basename', function $$basename() {
       var self = this;
 
-      return $$($nesting, 'Pathname').$new($$($nesting, 'File').$basename(self.path))
-    }, $Pathname_basename$19.$$arity = 0);
+      return $$('Pathname').$new($$('File').$basename(self.path))
+    }, 0);
     
-    Opal.def(self, '$directory?', $Pathname_directory$ques$20 = function() {
+    $def(self, '$directory?', function $Pathname_directory$ques$7() {
       var self = this;
 
-      return $$($nesting, 'File')['$directory?'](self.path)
-    }, $Pathname_directory$ques$20.$$arity = 0);
+      return $$('File')['$directory?'](self.path)
+    }, 0);
     
-    Opal.def(self, '$extname', $Pathname_extname$21 = function $$extname() {
+    $def(self, '$extname', function $$extname() {
       var self = this;
 
-      return $$($nesting, 'File').$extname(self.path)
-    }, $Pathname_extname$21.$$arity = 0);
+      return $$('File').$extname(self.path)
+    }, 0);
     
-    Opal.def(self, '$<=>', $Pathname_$lt_eq_gt$22 = function(other) {
+    $def(self, '$<=>', function $Pathname_$lt_eq_gt$8(other) {
       var self = this;
 
       return self.$path()['$<=>'](other.$path())
-    }, $Pathname_$lt_eq_gt$22.$$arity = 1);
-    $alias(self, "eql?", "==");
-    $alias(self, "===", "==");
-    $alias(self, "to_str", "to_path");
-    $alias(self, "to_s", "to_path");
-    Opal.const_set($nesting[0], 'SAME_PATHS', (function() {if ($truthy($$$($$($nesting, 'File'), 'FNM_SYSCASE')['$nonzero?']())) {
-      return $send(self, 'proc', [], ($Pathname$23 = function(a, b){var self = $Pathname$23.$$s == null ? this : $Pathname$23.$$s;
-
-        
-        
-        if (a == null) {
-          a = nil;
-        };
-        
-        if (b == null) {
-          b = nil;
-        };
-        return a.$casecmp(b)['$=='](0);}, $Pathname$23.$$s = self, $Pathname$23.$$arity = 2, $Pathname$23))
-    } else {
-      return $send(self, 'proc', [], ($Pathname$24 = function(a, b){var self = $Pathname$24.$$s == null ? this : $Pathname$24.$$s;
-
-        
-        
-        if (a == null) {
-          a = nil;
-        };
-        
-        if (b == null) {
-          b = nil;
-        };
-        return a['$=='](b);}, $Pathname$24.$$s = self, $Pathname$24.$$arity = 2, $Pathname$24))
-    }; return nil; })());
+    }, 1);
+    $const_set($nesting[0], 'SAME_PATHS', ($truthy($$$($$('File'), 'FNM_SYSCASE')['$nonzero?']()) ? ($send(self, 'proc', [], function $Pathname$9(a, b){
+      
+      
+      if (a == null) a = nil;;
+      
+      if (b == null) b = nil;;
+      return a.$casecmp(b)['$=='](0);}, 2)) : ($send(self, 'proc', [], function $Pathname$10(a, b){
+      
+      
+      if (a == null) a = nil;;
+      
+      if (b == null) b = nil;;
+      return a['$=='](b);}, 2))));
     
-    Opal.def(self, '$relative_path_from', $Pathname_relative_path_from$25 = function $$relative_path_from(base_directory) {
-      var $a, $b, $c, self = this, dest_directory = nil, dest_prefix = nil, dest_names = nil, r = nil, basename = nil, base_prefix = nil, base_names = nil, $ret_or_6 = nil, $ret_or_7 = nil, relpath_names = nil;
+    $def(self, '$relative_path_from', function $$relative_path_from(base_directory) {
+      var $a, $b, $c, self = this, dest_directory = nil, dest_prefix = nil, dest_names = nil, r = nil, basename = nil, base_prefix = nil, base_names = nil, $ret_or_1 = nil, $ret_or_2 = nil, relpath_names = nil;
 
       
       dest_directory = self.$cleanpath().$to_s();
@@ -32999,76 +30028,71 @@ Opal.modules["pathname"] = function(Opal) {
       dest_names = [];
       while ($truthy((r = self.$chop_basename(dest_prefix)))) {
         
-        $c = r, $b = Opal.to_ary($c), (dest_prefix = ($b[0] == null ? nil : $b[0])), (basename = ($b[1] == null ? nil : $b[1])), $c;
-        if ($truthy(basename['$!=']("."))) {
-          dest_names.$unshift(basename)};
+        $c = r, $b = $to_ary($c), (dest_prefix = ($b[0] == null ? nil : $b[0])), (basename = ($b[1] == null ? nil : $b[1])), $c;
+        if ($neqeq(basename, ".")) {
+          dest_names.$unshift(basename)
+        };
       };
       base_prefix = base_directory;
       base_names = [];
       while ($truthy((r = self.$chop_basename(base_prefix)))) {
         
-        $c = r, $b = Opal.to_ary($c), (base_prefix = ($b[0] == null ? nil : $b[0])), (basename = ($b[1] == null ? nil : $b[1])), $c;
-        if ($truthy(basename['$!=']("."))) {
-          base_names.$unshift(basename)};
+        $c = r, $b = $to_ary($c), (base_prefix = ($b[0] == null ? nil : $b[0])), (basename = ($b[1] == null ? nil : $b[1])), $c;
+        if ($neqeq(basename, ".")) {
+          base_names.$unshift(basename)
+        };
       };
-      if ($truthy($$($nesting, 'SAME_PATHS')['$[]'](dest_prefix, base_prefix))) {
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "" + "different prefix: " + (dest_prefix.$inspect()) + " and " + (base_directory.$inspect()))
+      if (!$truthy($$('SAME_PATHS')['$[]'](dest_prefix, base_prefix))) {
+        self.$raise($$('ArgumentError'), "different prefix: " + (dest_prefix.$inspect()) + " and " + (base_directory.$inspect()))
       };
-      while ($truthy((function() {if ($truthy(($ret_or_6 = (function() {if ($truthy(($ret_or_7 = dest_names['$empty?']()['$!']()))) {
-        return base_names['$empty?']()['$!']()
-      } else {
-        return $ret_or_7
-      }; return nil; })()))) {
-        return $$($nesting, 'SAME_PATHS')['$[]'](dest_names.$first(), base_names.$first())
-      } else {
-        return $ret_or_6
-      }; return nil; })())) {
+      while ($truthy(($truthy(($ret_or_1 = ($truthy(($ret_or_2 = dest_names['$empty?']()['$!']())) ? (base_names['$empty?']()['$!']()) : ($ret_or_2)))) ? ($$('SAME_PATHS')['$[]'](dest_names.$first(), base_names.$first())) : ($ret_or_1)))) {
         
         dest_names.$shift();
         base_names.$shift();
       };
       if ($truthy(base_names['$include?'](".."))) {
-        self.$raise($$($nesting, 'ArgumentError'), "" + "base_directory has ..: " + (base_directory.$inspect()))};
+        self.$raise($$('ArgumentError'), "base_directory has ..: " + (base_directory.$inspect()))
+      };
       base_names.$fill("..");
       relpath_names = $rb_plus(base_names, dest_names);
       if ($truthy(relpath_names['$empty?']())) {
-        return $$($nesting, 'Pathname').$new(".")
+        return $$('Pathname').$new(".")
       } else {
-        return $$($nesting, 'Pathname').$new($send($$($nesting, 'File'), 'join', Opal.to_a(relpath_names)))
+        return $$('Pathname').$new($send($$('File'), 'join', $to_a(relpath_names)))
       };
-    }, $Pathname_relative_path_from$25.$$arity = 1);
-    return (Opal.def(self, '$entries', $Pathname_entries$26 = function $$entries() {
-      var $$27, self = this;
+    }, 1);
+    
+    $def(self, '$entries', function $$entries() {
+      var self = this;
 
-      return $send($$($nesting, 'Dir').$entries(self.path), 'map', [], ($$27 = function(f){var self = $$27.$$s == null ? this : $$27.$$s;
+      return $send($$('Dir').$entries(self.path), 'map', [], function $$11(f){var self = $$11.$$s == null ? this : $$11.$$s;
 
         
         
-        if (f == null) {
-          f = nil;
-        };
-        return self.$class().$new(f);}, $$27.$$s = self, $$27.$$arity = 1, $$27))
-    }, $Pathname_entries$26.$$arity = 0), nil) && 'entries';
+        if (f == null) f = nil;;
+        return self.$class().$new(f);}, {$$arity: 1, $$s: self})
+    }, 0);
+    $alias(self, "===", "==");
+    $alias(self, "eql?", "==");
+    $alias(self, "to_s", "to_path");
+    return $alias(self, "to_str", "to_path");
   })($nesting[0], null, $nesting);
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Kernel');
 
-    var $nesting = [self].concat($parent_nesting), $Kernel_Pathname$28;
-
-    return (Opal.def(self, '$Pathname', $Kernel_Pathname$28 = function $$Pathname(path) {
-      var self = this;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return $$($nesting, 'Pathname').$new(path)
-    }, $Kernel_Pathname$28.$$arity = 1), nil) && 'Pathname'
+    return $def(self, '$Pathname', function $$Pathname(path) {
+      
+      return $$('Pathname').$new(path)
+    }, 1)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/rewriters/break_finder"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $alias = Opal.alias;
+Opal.modules["opal/rewriters/break_finder"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $def = Opal.def, $alias = Opal.alias;
 
-  Opal.add_stubs(['$require']);
+  Opal.add_stubs('require');
   
   self.$require("opal/rewriter");
   return (function($base, $parent_nesting) {
@@ -33079,63 +30103,55 @@ Opal.modules["opal/rewriters/break_finder"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Rewriters');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'BreakFinder');
 
-        var $nesting = [self].concat($parent_nesting), $BreakFinder_initialize$1, $BreakFinder_found_break$ques$2, $BreakFinder_on_break$3, $BreakFinder_stop_lookup$4;
+        var $proto = self.$$prototype;
 
-        self.$$prototype.found_break = nil;
+        $proto.found_break = nil;
         
         
-        Opal.def(self, '$initialize', $BreakFinder_initialize$1 = function $$initialize() {
+        $def(self, '$initialize', function $$initialize() {
           var self = this;
 
           return (self.found_break = false)
-        }, $BreakFinder_initialize$1.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$found_break?', $BreakFinder_found_break$ques$2 = function() {
+        $def(self, '$found_break?', function $BreakFinder_found_break$ques$1() {
           var self = this;
 
           return self.found_break
-        }, $BreakFinder_found_break$ques$2.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$on_break', $BreakFinder_on_break$3 = function $$on_break(node) {
+        $def(self, '$on_break', function $$on_break(node) {
           var self = this;
 
           
           self.found_break = true;
           return node;
-        }, $BreakFinder_on_break$3.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$stop_lookup', $BreakFinder_stop_lookup$4 = function $$stop_lookup(node) {
-          var self = this;
-
+        $def(self, '$stop_lookup', function $$stop_lookup(node) {
+          
           return nil
-        }, $BreakFinder_stop_lookup$4.$$arity = 1);
+        }, 1);
         $alias(self, "on_for", "stop_lookup");
         $alias(self, "on_while", "stop_lookup");
         $alias(self, "on_while_post", "stop_lookup");
         $alias(self, "on_until", "stop_lookup");
         $alias(self, "on_until_post", "stop_lookup");
         return $alias(self, "on_block", "stop_lookup");
-      })($nesting[0], $$$($$$($$($nesting, 'Opal'), 'Rewriters'), 'Base'), $nesting)
+      })($nesting[0], $$$($$$($$('Opal'), 'Rewriters'), 'Base'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/call"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $hash2 = Opal.hash2, $send = Opal.send, $send2 = Opal.send2, $find_super = Opal.find_super, $slice = Opal.slice, $truthy = Opal.truthy, $range = Opal.range;
+Opal.modules["opal/nodes/call"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $const_set = Opal.const_set, $hash2 = Opal.hash2, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $defs = Opal.defs, $send2 = Opal.send2, $find_super = Opal.find_super, $slice = Opal.slice, $truthy = Opal.truthy, $def = Opal.def, $eqeq = Opal.eqeq, $rb_plus = Opal.rb_plus, $not = Opal.not, $neqeq = Opal.neqeq, $eqeqeq = Opal.eqeqeq, $to_ary = Opal.to_ary, $Opal = Opal.Opal, $range = Opal.range;
 
-  Opal.add_stubs(['$require', '$handle', '$attr_reader', '$freeze', '$[]=', '$-', '$define_method', '$to_proc', '$include?', '$type', '$s', '$handle_special', '$record_method?', '$<<', '$method_calls', '$compiler', '$to_sym', '$meth', '$using_eval?', '$compile_eval_var', '$using_irb?', '$compile_irb_var', '$default_compile', '$private', '$iter', '$new', '$process', '$found_break?', '$splat?', '$!', '$empty?', '$collect_refinements_temps', '$scope', '$invoke_using_refinement?', '$compile_using_refined_send', '$invoke_using_send?', '$compile_using_send', '$compile_simple_call_chain', '$compile_break_catcher', '$helper', '$push', '$compile_receiver', '$compile_method_name', '$compile_arguments', '$compile_block_pass', '$compile_refinements', '$recv', '$receiver_sexp', '$expr', '$arglist', '$children', '$map', '$iter_has_break?', '$unshift', '$line', '$method_jsid', '$any?', '$==', '$recvr', '$mid_to_jsid', '$to_s', '$with_temp', '$intern', '$irb?', '$top?', '$variable_like?', '$eval?', '$scope_variables', '$nil?', '$updated', '$method', '$arity', '$[]', '$each', '$add_special', '$inline_operators?', '$operator_helpers', '$fragment', '$call', '$resolve', '$requires', '$file', '$dirname', '$cleanpath', '$join', '$Pathname', '$inspect', '$class_scope?', '$required_trees', '$force_encoding', '$encoding', '$+', '$handle_block_given_call', '$def?', '$mid', '$accepts_using?', '$count', '$using_refinement', '$first', '$refinements_temp', '$arity_check?', '$defines_lambda', '$push_nesting?', '$!=', '$length', '$new_temp', '$scope_locals', '$source_location', '$size', '$last', '$handle_part', '$is_a?', '$expand_path', '$split', '$dynamic_require_severity', '$===', '$error', '$warning', '$each_with_object', '$pop']);
+  Opal.add_stubs('require,handle,attr_reader,freeze,[]=,-,define_method,to_proc,include?,type,s,handle_special,record_method?,<<,method_calls,compiler,to_sym,meth,using_eval?,compile_eval_var,using_irb?,compile_irb_var,default_compile,private,iter,new,process,found_break?,splat?,!,empty?,collect_refinements_temps,scope,auto_await?,push,await_encountered=,invoke_using_refinement?,compile_using_refined_send,invoke_using_send?,compile_using_send,compile_simple_call_chain,compile_break_catcher,helper,compile_receiver,compile_method_name,compile_arguments,compile_block_pass,compile_refinements,recv,receiver_sexp,expr,arglist,children,map,iter_has_break?,unshift,line,method_jsid,any?,==,recvr,mid_to_jsid,to_s,with_temp,intern,irb?,top?,variable_like?,eval?,scope_variables,nil?,updated,async_await,!=,match?,method,arity,[],each,add_special,call,inline_operators?,fragment,resolve,requires,file,dirname,cleanpath,join,Pathname,self,inspect,length,warning,autoloads,required_trees,force_encoding,encoding,+,handle_block_given_call,def?,mid,module_name,count,accepts_using?,using_refinement,first,refinements_temp,arity_check?,defines_lambda,push_nesting?,nesting,new_temp,scope_locals,source_location,size,last,dynamic_require_severity,handle_part,===,is_a?,expand_path,split,error,each_with_object,pop');
   
   self.$require("set");
   self.$require("pathname");
@@ -33149,117 +30165,117 @@ Opal.modules["opal/nodes/call"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'CallNode');
 
-        var $nesting = [self].concat($parent_nesting), $CallNode_add_special$1, $CallNode_initialize$2, $CallNode_compile$3, $CallNode_iter_has_break$ques$5, $CallNode_invoke_using_send$ques$6, $CallNode_invoke_using_refinement$ques$7, $CallNode_default_compile$8, $CallNode_compile_using_send$9, $CallNode_compile_using_refined_send$10, $CallNode_compile_receiver$11, $CallNode_compile_method_name$12, $CallNode_compile_arguments$13, $CallNode_compile_block_pass$14, $CallNode_compile_refinements$15, $CallNode_compile_break_catcher$17, $CallNode_compile_simple_call_chain$18, $CallNode_splat$ques$19, $CallNode_receiver_sexp$21, $CallNode_method_jsid$22, $CallNode_record_method$ques$23, $CallNode_compile_irb_var$24, $CallNode_compile_eval_var$26, $CallNode_using_irb$ques$27, $CallNode_using_eval$ques$28, $CallNode_variable_like$ques$29, $CallNode_sexp_with_arglist$30, $CallNode_handle_special$31, $CallNode$32, $CallNode$34, $CallNode$35, $CallNode$36, $CallNode$37, $CallNode$38, $CallNode$39, $CallNode$40, $CallNode$41, $CallNode_using_refinement$42, $CallNode$43, $CallNode$44, $CallNode$45, $CallNode$47, $CallNode$48, $CallNode$49, $CallNode$50, $CallNode_push_nesting$ques$51;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.sexp = self.$$prototype.compiler = nil;
+        $proto.sexp = $proto.compiler = nil;
         
         self.$handle("send");
         self.$attr_reader("recvr", "meth", "arglist", "iter");
-        Opal.const_set($nesting[0], 'SPECIALS', $hash2([], {}));
-        Opal.const_set($nesting[0], 'OPERATORS', $hash2(["+", "-", "*", "/", "<", "<=", ">", ">="], {"+": "plus", "-": "minus", "*": "times", "/": "divide", "<": "lt", "<=": "le", ">": "gt", ">=": "ge"}).$freeze());
-        Opal.defs(self, '$add_special', $CallNode_add_special$1 = function $$add_special(name, options) {
-          var $iter = $CallNode_add_special$1.$$p, handler = $iter || nil, self = this, $writer = nil;
+        $const_set($nesting[0], 'SPECIALS', $hash2([], {}));
+        $const_set($nesting[0], 'OPERATORS', $hash2(["+", "-", "*", "/", "<", "<=", ">", ">="], {"+": "plus", "-": "minus", "*": "times", "/": "divide", "<": "lt", "<=": "le", ">": "gt", ">=": "ge"}).$freeze());
+        $defs(self, '$add_special', function $$add_special(name, options) {
+          var handler = $$add_special.$$p || nil, self = this, $writer = nil;
 
-          if ($iter) $CallNode_add_special$1.$$p = null;
+          delete $$add_special.$$p;
           
+          ;
           
-          if ($iter) $CallNode_add_special$1.$$p = null;;
-          
-          if (options == null) {
-            options = $hash2([], {});
-          };
+          if (options == null) options = $hash2([], {});;
           
           $writer = [name, options];
-          $send($$($nesting, 'SPECIALS'), '[]=', Opal.to_a($writer));
+          $send($$('SPECIALS'), '[]=', $to_a($writer));
           $writer[$rb_minus($writer["length"], 1)];;
-          return $send(self, 'define_method', ["" + "handle_" + (name)], handler.$to_proc());
-        }, $CallNode_add_special$1.$$arity = -2);
+          return $send(self, 'define_method', ["handle_" + (name)], handler.$to_proc());
+        }, -2);
         
-        Opal.def(self, '$initialize', $CallNode_initialize$2 = function $$initialize($a) {
-          var $post_args, $b, $c, $iter = $CallNode_initialize$2.$$p, $yield = $iter || nil, self = this, args = nil, rest = nil, last_arg = nil, $ret_or_1 = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        $def(self, '$initialize', function $$initialize($a) {
+          var $post_args, $rest_arg, $b, $c, $yield = $$initialize.$$p || nil, self = this, args = nil, rest = nil, last_arg = nil;
 
-          if ($iter) $CallNode_initialize$2.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$initialize.$$p;
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
-          ;
-          $send2(self, $find_super(self, 'initialize', $CallNode_initialize$2, false, true), 'initialize', $zuper, $iter);
-          $b = [].concat(Opal.to_a(self.sexp)), (self.recvr = ($b[0] == null ? nil : $b[0])), (self.meth = ($b[1] == null ? nil : $b[1])), (args = $slice.call($b, 2)), $b;
-          $b = [].concat(Opal.to_a(args)), $c = $b.length - 1, $c = ($c < 0) ? 0 : $c, (rest = $slice.call($b, 0, $c)), (last_arg = ($b[$c] == null ? nil : $b[$c])), $b;
-          if ($truthy((function() {if ($truthy(($ret_or_1 = last_arg))) {
-            return ["iter", "block_pass"]['$include?'](last_arg.$type())
-          } else {
-            return $ret_or_1
-          }; return nil; })())) {
+          $post_args = Opal.slice.call(arguments);
+          
+          $rest_arg = $post_args;;
+          $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', $to_a($rest_arg), $yield);
+          $b = [].concat($to_a(self.sexp)), (self.recvr = ($b[0] == null ? nil : $b[0])), (self.meth = ($b[1] == null ? nil : $b[1])), (args = $slice.call($b, 2)), $b;
+          $b = [].concat($to_a(args)), $c = $b.length - 1, $c = ($c < 0) ? 0 : $c, (rest = $slice.call($b, 0, $c)), (last_arg = ($b[$c] == null ? nil : $b[$c])), $b;
+          if (($truthy(last_arg) && ($truthy(["iter", "block_pass"]['$include?'](last_arg.$type()))))) {
             
             self.iter = last_arg;
             args = rest;
           } else {
             self.iter = nil
           };
-          return (self.arglist = $send(self, 's', ["arglist"].concat(Opal.to_a(args))));
-        }, $CallNode_initialize$2.$$arity = -1);
+          return (self.arglist = $send(self, 's', ["arglist"].concat($to_a(args))));
+        }, -1);
         
-        Opal.def(self, '$compile', $CallNode_compile$3 = function $$compile() {try {
+        $def(self, '$compile', function $$compile() {try {
 
-          var $$4, self = this;
+          var self = this;
 
-          return $send(self, 'handle_special', [], ($$4 = function(){var self = $$4.$$s == null ? this : $$4.$$s;
+          return $send(self, 'handle_special', [], function $$1(){var self = $$1.$$s == null ? this : $$1.$$s;
 
             
             if ($truthy(self['$record_method?']())) {
-              self.$compiler().$method_calls()['$<<'](self.$meth().$to_sym())};
+              self.$compiler().$method_calls()['$<<'](self.$meth().$to_sym())
+            };
             if ($truthy(self['$using_eval?']())) {
-              Opal.ret(self.$compile_eval_var())};
+              Opal.ret(self.$compile_eval_var())
+            };
             if ($truthy(self['$using_irb?']())) {
-              Opal.ret(self.$compile_irb_var())};
-            return self.$default_compile();}, $$4.$$s = self, $$4.$$arity = 0, $$4))
+              Opal.ret(self.$compile_irb_var())
+            };
+            return self.$default_compile();}, {$$arity: 0, $$s: self})
           } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
-        }, $CallNode_compile$3.$$arity = 0);
+        }, 0);
         self.$private();
         
-        Opal.def(self, '$iter_has_break?', $CallNode_iter_has_break$ques$5 = function() {
+        $def(self, '$iter_has_break?', function $CallNode_iter_has_break$ques$2() {
           var self = this, finder = nil;
 
           
-          if ($truthy(self.$iter())) {
-          } else {
+          if (!$truthy(self.$iter())) {
             return false
           };
-          finder = $$$($$$($$($nesting, 'Opal'), 'Rewriters'), 'BreakFinder').$new();
+          finder = $$$($$$($$('Opal'), 'Rewriters'), 'BreakFinder').$new();
           finder.$process(self.$iter());
           return finder['$found_break?']();
-        }, $CallNode_iter_has_break$ques$5.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$invoke_using_send?', $CallNode_invoke_using_send$ques$6 = function() {
-          var self = this, $ret_or_2 = nil;
+        $def(self, '$invoke_using_send?', function $CallNode_invoke_using_send$ques$3() {
+          var self = this, $ret_or_1 = nil;
 
-          if ($truthy(($ret_or_2 = self.$iter()))) {
-            return $ret_or_2
+          if ($truthy(($ret_or_1 = self.$iter()))) {
+            return $ret_or_1
           } else {
             return self['$splat?']()
           }
-        }, $CallNode_invoke_using_send$ques$6.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$invoke_using_refinement?', $CallNode_invoke_using_refinement$ques$7 = function() {
+        $def(self, '$invoke_using_refinement?', function $CallNode_invoke_using_refinement$ques$4() {
           var self = this;
 
           return self.$scope().$scope().$collect_refinements_temps()['$empty?']()['$!']()
-        }, $CallNode_invoke_using_refinement$ques$7.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$default_compile', $CallNode_default_compile$8 = function $$default_compile() {
-          var self = this;
+        $def(self, '$default_compile', function $$default_compile() {
+          var self = this, $writer = nil;
 
           
+          if ($truthy(self['$auto_await?']())) {
+            
+            self.$push("await ");
+            
+            $writer = [true];
+            $send(self.$scope(), 'await_encountered=', $to_a($writer));
+            $writer[$rb_minus($writer["length"], 1)];;
+          };
           if ($truthy(self['$invoke_using_refinement?']())) {
             self.$compile_using_refined_send()
           } else if ($truthy(self['$invoke_using_send?']())) {
@@ -33268,9 +30284,9 @@ Opal.modules["opal/nodes/call"] = function(Opal) {
             self.$compile_simple_call_chain()
           };
           return self.$compile_break_catcher();
-        }, $CallNode_default_compile$8.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_using_send', $CallNode_compile_using_send$9 = function $$compile_using_send() {
+        $def(self, '$compile_using_send', function $$compile_using_send() {
           var self = this;
 
           
@@ -33281,9 +30297,9 @@ Opal.modules["opal/nodes/call"] = function(Opal) {
           self.$compile_arguments();
           self.$compile_block_pass();
           return self.$push(")");
-        }, $CallNode_compile_using_send$9.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_using_refined_send', $CallNode_compile_using_refined_send$10 = function $$compile_using_refined_send() {
+        $def(self, '$compile_using_refined_send', function $$compile_using_refined_send() {
           var self = this;
 
           
@@ -33295,21 +30311,21 @@ Opal.modules["opal/nodes/call"] = function(Opal) {
           self.$compile_arguments();
           self.$compile_block_pass();
           return self.$push(")");
-        }, $CallNode_compile_using_refined_send$10.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_receiver', $CallNode_compile_receiver$11 = function $$compile_receiver() {
+        $def(self, '$compile_receiver', function $$compile_receiver() {
           var self = this;
 
           return self.$push(self.$recv(self.$receiver_sexp()))
-        }, $CallNode_compile_receiver$11.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_method_name', $CallNode_compile_method_name$12 = function $$compile_method_name() {
+        $def(self, '$compile_method_name', function $$compile_method_name() {
           var self = this;
 
-          return self.$push("" + ", '" + (self.$meth()) + "'")
-        }, $CallNode_compile_method_name$12.$$arity = 0);
+          return self.$push(", '" + (self.$meth()) + "'")
+        }, 0);
         
-        Opal.def(self, '$compile_arguments', $CallNode_compile_arguments$13 = function $$compile_arguments() {
+        $def(self, '$compile_arguments', function $$compile_arguments() {
           var self = this;
 
           
@@ -33321,9 +30337,9 @@ Opal.modules["opal/nodes/call"] = function(Opal) {
           } else {
             return self.$push("[", self.$expr(self.$arglist()), "]")
           };
-        }, $CallNode_compile_arguments$13.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_block_pass', $CallNode_compile_block_pass$14 = function $$compile_block_pass() {
+        $def(self, '$compile_block_pass', function $$compile_block_pass() {
           var self = this;
 
           if ($truthy(self.$iter())) {
@@ -33331,24 +30347,22 @@ Opal.modules["opal/nodes/call"] = function(Opal) {
           } else {
             return nil
           }
-        }, $CallNode_compile_block_pass$14.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_refinements', $CallNode_compile_refinements$15 = function $$compile_refinements() {
-          var $$16, self = this, refinements = nil;
+        $def(self, '$compile_refinements', function $$compile_refinements() {
+          var self = this, refinements = nil;
 
           
-          refinements = $send(self.$scope().$collect_refinements_temps(), 'map', [], ($$16 = function(i){var self = $$16.$$s == null ? this : $$16.$$s;
+          refinements = $send(self.$scope().$collect_refinements_temps(), 'map', [], function $$5(i){var self = $$5.$$s == null ? this : $$5.$$s;
 
             
             
-            if (i == null) {
-              i = nil;
-            };
-            return self.$s("js_tmp", i);}, $$16.$$s = self, $$16.$$arity = 1, $$16));
-          return self.$push(self.$expr($send(self, 's', ["array"].concat(Opal.to_a(refinements)))), ", ");
-        }, $CallNode_compile_refinements$15.$$arity = 0);
+            if (i == null) i = nil;;
+            return self.$s("js_tmp", i);}, {$$arity: 1, $$s: self});
+          return self.$push(self.$expr($send(self, 's', ["array"].concat($to_a(refinements)))), ", ");
+        }, 0);
         
-        Opal.def(self, '$compile_break_catcher', $CallNode_compile_break_catcher$17 = function $$compile_break_catcher() {
+        $def(self, '$compile_break_catcher', function $$compile_break_catcher() {
           var self = this;
 
           if ($truthy(self['$iter_has_break?']())) {
@@ -33359,129 +30373,122 @@ Opal.modules["opal/nodes/call"] = function(Opal) {
           } else {
             return nil
           }
-        }, $CallNode_compile_break_catcher$17.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_simple_call_chain', $CallNode_compile_simple_call_chain$18 = function $$compile_simple_call_chain() {
+        $def(self, '$compile_simple_call_chain', function $$compile_simple_call_chain() {
           var self = this;
 
           return self.$push(self.$recv(self.$receiver_sexp()), self.$method_jsid(), "(", self.$expr(self.$arglist()), ")")
-        }, $CallNode_compile_simple_call_chain$18.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$splat?', $CallNode_splat$ques$19 = function() {
-          var $$20, self = this;
-
-          return $send(self.$arglist().$children(), 'any?', [], ($$20 = function(a){var self = $$20.$$s == null ? this : $$20.$$s;
+        $def(self, '$splat?', function $CallNode_splat$ques$6() {
+          var self = this;
 
+          return $send(self.$arglist().$children(), 'any?', [], function $$7(a){
             
             
-            if (a == null) {
-              a = nil;
-            };
-            return a.$type()['$==']("splat");}, $$20.$$s = self, $$20.$$arity = 1, $$20))
-        }, $CallNode_splat$ques$19.$$arity = 0);
+            if (a == null) a = nil;;
+            return a.$type()['$==']("splat");}, 1)
+        }, 0);
         
-        Opal.def(self, '$receiver_sexp', $CallNode_receiver_sexp$21 = function $$receiver_sexp() {
-          var self = this, $ret_or_3 = nil;
+        $def(self, '$receiver_sexp', function $$receiver_sexp() {
+          var self = this, $ret_or_1 = nil;
 
-          if ($truthy(($ret_or_3 = self.$recvr()))) {
-            return $ret_or_3
+          if ($truthy(($ret_or_1 = self.$recvr()))) {
+            return $ret_or_1
           } else {
             return self.$s("self")
           }
-        }, $CallNode_receiver_sexp$21.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$method_jsid', $CallNode_method_jsid$22 = function $$method_jsid() {
+        $def(self, '$method_jsid', function $$method_jsid() {
           var self = this;
 
           return self.$mid_to_jsid(self.$meth().$to_s())
-        }, $CallNode_method_jsid$22.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$record_method?', $CallNode_record_method$ques$23 = function() {
-          var self = this;
-
+        $def(self, '$record_method?', function $CallNode_record_method$ques$8() {
+          
           return true
-        }, $CallNode_record_method$ques$23.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_irb_var', $CallNode_compile_irb_var$24 = function $$compile_irb_var() {
-          var $$25, self = this;
+        $def(self, '$compile_irb_var', function $$compile_irb_var() {
+          var self = this;
 
-          return $send(self, 'with_temp', [], ($$25 = function(tmp){var self = $$25.$$s == null ? this : $$25.$$s, lvar = nil, call = nil;
+          return $send(self, 'with_temp', [], function $$9(tmp){var self = $$9.$$s == null ? this : $$9.$$s, lvar = nil, call = nil;
 
             
             
-            if (tmp == null) {
-              tmp = nil;
-            };
+            if (tmp == null) tmp = nil;;
             lvar = self.$meth();
             call = self.$s("send", self.$s("self"), self.$meth().$intern(), self.$s("arglist"));
-            return self.$push("" + "((" + (tmp) + " = Opal.irb_vars." + (lvar) + ") == null ? ", self.$expr(call), "" + " : " + (tmp) + ")");}, $$25.$$s = self, $$25.$$arity = 1, $$25))
-        }, $CallNode_compile_irb_var$24.$$arity = 0);
+            return self.$push("((" + (tmp) + " = Opal.irb_vars." + (lvar) + ") == null ? ", self.$expr(call), " : " + (tmp) + ")");}, {$$arity: 1, $$s: self})
+        }, 0);
         
-        Opal.def(self, '$compile_eval_var', $CallNode_compile_eval_var$26 = function $$compile_eval_var() {
+        $def(self, '$compile_eval_var', function $$compile_eval_var() {
           var self = this;
 
           return self.$push(self.$meth().$to_s())
-        }, $CallNode_compile_eval_var$26.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$using_irb?', $CallNode_using_irb$ques$27 = function() {
-          var self = this, $ret_or_4 = nil, $ret_or_5 = nil;
+        $def(self, '$using_irb?', function $CallNode_using_irb$ques$10() {
+          var self = this, $ret_or_1 = nil, $ret_or_2 = nil;
 
-          if ($truthy(($ret_or_4 = (function() {if ($truthy(($ret_or_5 = self.compiler['$irb?']()))) {
-            return self.$scope()['$top?']()
-          } else {
-            return $ret_or_5
-          }; return nil; })()))) {
+          if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = self.compiler['$irb?']())) ? (self.$scope()['$top?']()) : ($ret_or_2))))) {
             return self['$variable_like?']()
           } else {
-            return $ret_or_4
+            return $ret_or_1
           }
-        }, $CallNode_using_irb$ques$27.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$using_eval?', $CallNode_using_eval$ques$28 = function() {
-          var self = this, $ret_or_6 = nil, $ret_or_7 = nil;
+        $def(self, '$using_eval?', function $CallNode_using_eval$ques$11() {
+          var self = this, $ret_or_1 = nil, $ret_or_2 = nil;
 
-          if ($truthy(($ret_or_6 = (function() {if ($truthy(($ret_or_7 = self.compiler['$eval?']()))) {
-            return self.$scope()['$top?']()
-          } else {
-            return $ret_or_7
-          }; return nil; })()))) {
+          if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = self.compiler['$eval?']())) ? (self.$scope()['$top?']()) : ($ret_or_2))))) {
             return self.compiler.$scope_variables()['$include?'](self.$meth())
           } else {
-            return $ret_or_6
+            return $ret_or_1
           }
-        }, $CallNode_using_eval$ques$28.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$variable_like?', $CallNode_variable_like$ques$29 = function() {
-          var self = this, $ret_or_8 = nil, $ret_or_9 = nil;
+        $def(self, '$variable_like?', function $CallNode_variable_like$ques$12() {
+          var self = this, $ret_or_1 = nil, $ret_or_2 = nil;
 
-          if ($truthy(($ret_or_8 = (function() {if ($truthy(($ret_or_9 = self.$arglist()['$=='](self.$s("arglist"))))) {
-            return self.$recvr()['$nil?']()
-          } else {
-            return $ret_or_9
-          }; return nil; })()))) {
+          if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = self.$arglist()['$=='](self.$s("arglist")))) ? (self.$recvr()['$nil?']()) : ($ret_or_2))))) {
             return self.$iter()['$nil?']()
           } else {
-            return $ret_or_8
+            return $ret_or_1
           }
-        }, $CallNode_variable_like$ques$29.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$sexp_with_arglist', $CallNode_sexp_with_arglist$30 = function $$sexp_with_arglist() {
+        $def(self, '$sexp_with_arglist', function $$sexp_with_arglist() {
           var self = this;
 
           return self.sexp.$updated(nil, [self.$recvr(), self.$meth(), self.$arglist()])
-        }, $CallNode_sexp_with_arglist$30.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$handle_special', $CallNode_handle_special$31 = function $$handle_special() {
-          var $iter = $CallNode_handle_special$31.$$p, compile_default = $iter || nil, self = this, method = nil;
+        $def(self, '$auto_await?', function $CallNode_auto_await$ques$13() {
+          var self = this, awaited_set = nil, $ret_or_1 = nil, $ret_or_2 = nil;
 
-          if ($iter) $CallNode_handle_special$31.$$p = null;
           
+          awaited_set = self.$compiler().$async_await();
+          if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = awaited_set)) ? (awaited_set['$!='](true)) : ($ret_or_2))))) {
+            return awaited_set['$match?'](self.$meth().$to_s())
+          } else {
+            return $ret_or_1
+          };
+        }, 0);
+        
+        $def(self, '$handle_special', function $$handle_special() {
+          var compile_default = $$handle_special.$$p || nil, self = this, method = nil;
+
+          delete $$handle_special.$$p;
           
-          if ($iter) $CallNode_handle_special$31.$$p = null;;
-          if ($truthy($$($nesting, 'SPECIALS')['$include?'](self.$meth()))) {
+          ;
+          if ($truthy($$('SPECIALS')['$include?'](self.$meth()))) {
             
-            method = self.$method("" + "handle_" + (self.$meth()));
-            if (method.$arity()['$=='](1)) {
+            method = self.$method("handle_" + (self.$meth()));
+            if ($eqeq(method.$arity(), 1)) {
               return method['$[]'](compile_default)
             } else {
               return method['$[]']()
@@ -33489,217 +30496,215 @@ Opal.modules["opal/nodes/call"] = function(Opal) {
           } else {
             return Opal.yieldX(compile_default, []);
           };
-        }, $CallNode_handle_special$31.$$arity = 0);
-        $send($$($nesting, 'OPERATORS'), 'each', [], ($CallNode$32 = function(operator, name){var self = $CallNode$32.$$s == null ? this : $CallNode$32.$$s, $$33;
+        }, 0);
+        $send($$('OPERATORS'), 'each', [], function $CallNode$14(operator, name){var self = $CallNode$14.$$s == null ? this : $CallNode$14.$$s;
 
           
           
-          if (operator == null) {
-            operator = nil;
-          };
+          if (operator == null) operator = nil;;
           
-          if (name == null) {
-            name = nil;
-          };
-          return $send(self, 'add_special', [operator.$to_sym()], ($$33 = function(compile_default){var self = $$33.$$s == null ? this : $$33.$$s, $a, lhs = nil, rhs = nil;
+          if (name == null) name = nil;;
+          return $send(self, 'add_special', [operator.$to_sym()], function $$15(compile_default){var $a, self = $$15.$$s == null ? this : $$15.$$s, lhs = nil, rhs = nil;
 
             
             
-            if (compile_default == null) {
-              compile_default = nil;
-            };
-            if ($truthy(self.$compiler()['$inline_operators?']())) {
+            if (compile_default == null) compile_default = nil;;
+            if ($truthy(self['$invoke_using_refinement?']())) {
+              return compile_default.$call()
+            } else if ($truthy(self.$compiler()['$inline_operators?']())) {
               
               if ($truthy(self['$record_method?']())) {
-                self.$compiler().$method_calls()['$<<'](operator.$to_sym())};
-              self.$compiler().$operator_helpers()['$<<'](operator.$to_sym());
+                self.$compiler().$method_calls()['$<<'](operator.$to_sym())
+              };
+              self.$helper("rb_" + (name));
               $a = [self.$expr(self.$recvr()), self.$expr(self.$arglist())], (lhs = $a[0]), (rhs = $a[1]), $a;
-              self.$push(self.$fragment("" + "$rb_" + (name) + "("));
+              self.$push(self.$fragment("$rb_" + (name) + "("));
               self.$push(lhs);
               self.$push(self.$fragment(", "));
               self.$push(rhs);
               return self.$push(self.$fragment(")"));
             } else {
               return compile_default.$call()
-            };}, $$33.$$s = self, $$33.$$arity = 1, $$33));}, $CallNode$32.$$s = self, $CallNode$32.$$arity = 2, $CallNode$32));
-        $send(self, 'add_special', ["require"], ($CallNode$34 = function(compile_default){var self = $CallNode$34.$$s == null ? this : $CallNode$34.$$s, str = nil;
+            };}, {$$arity: 1, $$s: self});}, {$$arity: 2, $$s: self});
+        $send(self, 'add_special', ["require"], function $CallNode$16(compile_default){var self = $CallNode$16.$$s == null ? this : $CallNode$16.$$s, str = nil;
 
           
           
-          if (compile_default == null) {
-            compile_default = nil;
-          };
-          str = $$($nesting, 'DependencyResolver').$new(self.$compiler(), self.$arglist().$children()['$[]'](0)).$resolve();
-          if ($truthy(str['$nil?']())) {
-          } else {
+          if (compile_default == null) compile_default = nil;;
+          str = $$('DependencyResolver').$new(self.$compiler(), self.$arglist().$children()['$[]'](0)).$resolve();
+          if (!$truthy(str['$nil?']())) {
             self.$compiler().$requires()['$<<'](str)
           };
-          return compile_default.$call();}, $CallNode$34.$$s = self, $CallNode$34.$$arity = 1, $CallNode$34));
-        $send(self, 'add_special', ["require_relative"], ($CallNode$35 = function(){var self = $CallNode$35.$$s == null ? this : $CallNode$35.$$s, arg = nil, file = nil, dir = nil;
+          return compile_default.$call();}, {$$arity: 1, $$s: self});
+        $send(self, 'add_special', ["require_relative"], function $CallNode$17(){var self = $CallNode$17.$$s == null ? this : $CallNode$17.$$s, arg = nil, file = nil, dir = nil;
 
           
           arg = self.$arglist().$children()['$[]'](0);
           file = self.$compiler().$file();
-          if (arg.$type()['$==']("str")) {
+          if ($eqeq(arg.$type(), "str")) {
             
-            dir = $$($nesting, 'File').$dirname(file);
-            self.$compiler().$requires()['$<<'](self.$Pathname(dir).$join(arg.$children()['$[]'](0)).$cleanpath().$to_s());};
-          self.$push(self.$fragment("" + "self.$require(" + (file.$inspect()) + "+ '/../' + "));
+            dir = $$('File').$dirname(file);
+            self.$compiler().$requires()['$<<'](self.$Pathname(dir).$join(arg.$children()['$[]'](0)).$cleanpath().$to_s());
+          };
+          self.$push(self.$fragment("" + (self.$scope().$self()) + ".$require(" + (file.$inspect()) + "+ '/../' + "));
           self.$push(self.$process(self.$arglist()));
-          return self.$push(self.$fragment(")"));}, $CallNode$35.$$s = self, $CallNode$35.$$arity = 0, $CallNode$35));
-        $send(self, 'add_special', ["autoload"], ($CallNode$36 = function(compile_default){var self = $CallNode$36.$$s == null ? this : $CallNode$36.$$s, str = nil;
+          return self.$push(self.$fragment(")"));}, {$$arity: 0, $$s: self});
+        $send(self, 'add_special', ["autoload"], function $CallNode$18(compile_default){var self = $CallNode$18.$$s == null ? this : $CallNode$18.$$s, args = nil, str = nil;
 
           
           
-          if (compile_default == null) {
-            compile_default = nil;
-          };
-          if ($truthy(self.$scope()['$class_scope?']())) {
+          if (compile_default == null) compile_default = nil;;
+          args = self.$arglist().$children();
+          if (($eqeq(args.$length(), 2) && ($eqeq(args['$[]'](0).$type(), "sym")))) {
             
-            str = $$($nesting, 'DependencyResolver').$new(self.$compiler(), self.$arglist().$children()['$[]'](1)).$resolve();
+            str = $$('DependencyResolver').$new(self.$compiler(), args['$[]'](1), "ignore").$resolve();
             if ($truthy(str['$nil?']())) {
+              self.$compiler().$warning("File for autoload of constant '" + (args['$[]'](0).$children()['$[]'](0)) + "' could not be bundled!")
             } else {
-              self.$compiler().$requires()['$<<'](str)
+              
+              self.$compiler().$requires()['$<<'](str);
+              self.$compiler().$autoloads()['$<<'](str);
             };
-            return compile_default.$call();
-          } else {
-            return nil
-          };}, $CallNode$36.$$s = self, $CallNode$36.$$arity = 1, $CallNode$36));
-        $send(self, 'add_special', ["require_tree"], ($CallNode$37 = function(compile_default){var self = $CallNode$37.$$s == null ? this : $CallNode$37.$$s, $a, first_arg = nil, rest = nil, relative_path = nil, dir = nil, full_path = nil;
+          };
+          return compile_default.$call();}, {$$arity: 1, $$s: self});
+        $send(self, 'add_special', ["require_tree"], function $CallNode$19(compile_default){var $a, self = $CallNode$19.$$s == null ? this : $CallNode$19.$$s, first_arg = nil, rest = nil, relative_path = nil, dir = nil, full_path = nil;
 
           
           
-          if (compile_default == null) {
-            compile_default = nil;
-          };
-          $a = [].concat(Opal.to_a(self.$arglist().$children())), (first_arg = ($a[0] == null ? nil : $a[0])), (rest = $slice.call($a, 1)), $a;
-          if (first_arg.$type()['$==']("str")) {
+          if (compile_default == null) compile_default = nil;;
+          $a = [].concat($to_a(self.$arglist().$children())), (first_arg = ($a[0] == null ? nil : $a[0])), (rest = $slice.call($a, 1)), $a;
+          if ($eqeq(first_arg.$type(), "str")) {
             
             relative_path = first_arg.$children()['$[]'](0);
             self.$compiler().$required_trees()['$<<'](relative_path);
-            dir = $$($nesting, 'File').$dirname(self.$compiler().$file());
+            dir = $$('File').$dirname(self.$compiler().$file());
             full_path = self.$Pathname(dir).$join(relative_path).$cleanpath().$to_s();
             full_path.$force_encoding(relative_path.$encoding());
-            first_arg = first_arg.$updated(nil, [full_path]);};
+            first_arg = first_arg.$updated(nil, [full_path]);
+          };
           self.arglist = self.$arglist().$updated(nil, $rb_plus([first_arg], rest));
-          return compile_default.$call();}, $CallNode$37.$$s = self, $CallNode$37.$$arity = 1, $CallNode$37));
-        $send(self, 'add_special', ["block_given?"], ($CallNode$38 = function(){var self = $CallNode$38.$$s == null ? this : $CallNode$38.$$s;
+          return compile_default.$call();}, {$$arity: 1, $$s: self});
+        $send(self, 'add_special', ["block_given?"], function $CallNode$20(){var self = $CallNode$20.$$s == null ? this : $CallNode$20.$$s;
           if (self.sexp == null) self.sexp = nil;
 
-          return self.$push(self.$compiler().$handle_block_given_call(self.sexp))}, $CallNode$38.$$s = self, $CallNode$38.$$arity = 0, $CallNode$38));
-        $send(self, 'add_special', ["__callee__"], ($CallNode$39 = function(){var self = $CallNode$39.$$s == null ? this : $CallNode$39.$$s;
+          return self.$push(self.$compiler().$handle_block_given_call(self.sexp))}, {$$arity: 0, $$s: self});
+        $send(self, 'add_special', ["__callee__"], function $CallNode$21(){var self = $CallNode$21.$$s == null ? this : $CallNode$21.$$s;
 
           if ($truthy(self.$scope()['$def?']())) {
             return self.$push(self.$fragment(self.$scope().$mid().$to_s().$inspect()))
           } else {
             return self.$push(self.$fragment("nil"))
-          }}, $CallNode$39.$$s = self, $CallNode$39.$$arity = 0, $CallNode$39));
-        $send(self, 'add_special', ["__method__"], ($CallNode$40 = function(){var self = $CallNode$40.$$s == null ? this : $CallNode$40.$$s;
+          }}, {$$arity: 0, $$s: self});
+        $send(self, 'add_special', ["__method__"], function $CallNode$22(){var self = $CallNode$22.$$s == null ? this : $CallNode$22.$$s;
 
           if ($truthy(self.$scope()['$def?']())) {
             return self.$push(self.$fragment(self.$scope().$mid().$to_s().$inspect()))
           } else {
             return self.$push(self.$fragment("nil"))
-          }}, $CallNode$40.$$s = self, $CallNode$40.$$arity = 0, $CallNode$40));
-        $send(self, 'add_special', ["using"], ($CallNode$41 = function(compile_default){var self = $CallNode$41.$$s == null ? this : $CallNode$41.$$s, $ret_or_10 = nil;
+          }}, {$$arity: 0, $$s: self});
+        $send(self, 'add_special', ["__dir__"], function $CallNode$23(){var self = $CallNode$23.$$s == null ? this : $CallNode$23.$$s;
+
+          return self.$push($$('File').$dirname($$$($$('Opal'), 'Compiler').$module_name(self.$compiler().$file())).$inspect())}, {$$arity: 0, $$s: self});
+        $send(self, 'add_special', ["using"], function $CallNode$24(compile_default){var self = $CallNode$24.$$s == null ? this : $CallNode$24.$$s;
 
           
           
-          if (compile_default == null) {
-            compile_default = nil;
-          };
-          if ($truthy((function() {if ($truthy(($ret_or_10 = self.$scope()['$accepts_using?']()))) {
-            return self.$arglist().$children().$count()['$=='](1)
-          } else {
-            return $ret_or_10
-          }; return nil; })())) {
+          if (compile_default == null) compile_default = nil;;
+          if (($truthy(self.$scope()['$accepts_using?']()) && ($eqeq(self.$arglist().$children().$count(), 1)))) {
             return self.$using_refinement(self.$arglist().$children().$first())
           } else {
             return compile_default.$call()
-          };}, $CallNode$41.$$s = self, $CallNode$41.$$arity = 1, $CallNode$41));
+          };}, {$$arity: 1, $$s: self});
         
-        Opal.def(self, '$using_refinement', $CallNode_using_refinement$42 = function $$using_refinement(arg) {
+        $def(self, '$using_refinement', function $$using_refinement(arg) {
           var $a, self = this, prev = nil, curr = nil;
 
           
-          $a = [].concat(Opal.to_a(self.$scope().$refinements_temp())), (prev = ($a[0] == null ? nil : $a[0])), (curr = ($a[1] == null ? nil : $a[1])), $a;
+          $a = [].concat($to_a(self.$scope().$refinements_temp())), (prev = ($a[0] == null ? nil : $a[0])), (curr = ($a[1] == null ? nil : $a[1])), $a;
           if ($truthy(prev)) {
-            return self.$push("" + "(" + (curr) + " = " + (prev) + ".slice(), " + (curr) + ".push(", self.$expr(arg), "), self)")
+            return self.$push("(" + (curr) + " = " + (prev) + ".slice(), " + (curr) + ".push(", self.$expr(arg), "), " + (self.$scope().$self()) + ")")
           } else {
-            return self.$push("" + "(" + (curr) + " = [", self.$expr(arg), "], self)")
+            return self.$push("(" + (curr) + " = [", self.$expr(arg), "], " + (self.$scope().$self()) + ")")
           };
-        }, $CallNode_using_refinement$42.$$arity = 1);
-        $send(self, 'add_special', ["debugger"], ($CallNode$43 = function(){var self = $CallNode$43.$$s == null ? this : $CallNode$43.$$s;
+        }, 1);
+        $send(self, 'add_special', ["debugger"], function $CallNode$25(){var self = $CallNode$25.$$s == null ? this : $CallNode$25.$$s;
 
-          return self.$push(self.$fragment("debugger"))}, $CallNode$43.$$s = self, $CallNode$43.$$arity = 0, $CallNode$43));
-        $send(self, 'add_special', ["__OPAL_COMPILER_CONFIG__"], ($CallNode$44 = function(){var self = $CallNode$44.$$s == null ? this : $CallNode$44.$$s;
+          return self.$push(self.$fragment("debugger"))}, {$$arity: 0, $$s: self});
+        $send(self, 'add_special', ["__OPAL_COMPILER_CONFIG__"], function $CallNode$26(){var self = $CallNode$26.$$s == null ? this : $CallNode$26.$$s;
 
-          return self.$push(self.$fragment("" + "Opal.hash({ arity_check: " + (self.$compiler()['$arity_check?']()) + " })"))}, $CallNode$44.$$s = self, $CallNode$44.$$arity = 0, $CallNode$44));
-        $send(self, 'add_special', ["lambda"], ($CallNode$45 = function(compile_default){var self = $CallNode$45.$$s == null ? this : $CallNode$45.$$s, $$46;
+          return self.$push(self.$fragment("Opal.hash({ arity_check: " + (self.$compiler()['$arity_check?']()) + " })"))}, {$$arity: 0, $$s: self});
+        $send(self, 'add_special', ["lambda"], function $CallNode$27(compile_default){var self = $CallNode$27.$$s == null ? this : $CallNode$27.$$s;
 
           
           
-          if (compile_default == null) {
-            compile_default = nil;
-          };
-          return $send(self.$scope(), 'defines_lambda', [], ($$46 = function(){var self = $$46.$$s == null ? this : $$46.$$s;
-
-            return compile_default.$call()}, $$46.$$s = self, $$46.$$arity = 0, $$46));}, $CallNode$45.$$s = self, $CallNode$45.$$arity = 1, $CallNode$45));
-        $send(self, 'add_special', ["nesting"], ($CallNode$47 = function(compile_default){var self = $CallNode$47.$$s == null ? this : $CallNode$47.$$s, push_nesting = nil;
+          if (compile_default == null) compile_default = nil;;
+          return $send(self.$scope(), 'defines_lambda', [], function $$28(){
+            return compile_default.$call()}, 0);}, {$$arity: 1, $$s: self});
+        $send(self, 'add_special', ["nesting"], function $CallNode$29(compile_default){var self = $CallNode$29.$$s == null ? this : $CallNode$29.$$s, push_nesting = nil;
 
           
           
-          if (compile_default == null) {
-            compile_default = nil;
-          };
+          if (compile_default == null) compile_default = nil;;
           push_nesting = self['$push_nesting?']();
           if ($truthy(push_nesting)) {
-            self.$push("(Opal.Module.$$nesting = $nesting, ")};
+            self.$push("(Opal.Module.$$nesting = " + (self.$scope().$nesting()) + ", ")
+          };
           compile_default.$call();
           if ($truthy(push_nesting)) {
             return self.$push(")")
           } else {
             return nil
-          };}, $CallNode$47.$$s = self, $CallNode$47.$$arity = 1, $CallNode$47));
-        $send(self, 'add_special', ["constants"], ($CallNode$48 = function(compile_default){var self = $CallNode$48.$$s == null ? this : $CallNode$48.$$s, push_nesting = nil;
+          };}, {$$arity: 1, $$s: self});
+        $send(self, 'add_special', ["constants"], function $CallNode$30(compile_default){var self = $CallNode$30.$$s == null ? this : $CallNode$30.$$s, push_nesting = nil;
 
           
           
-          if (compile_default == null) {
-            compile_default = nil;
-          };
+          if (compile_default == null) compile_default = nil;;
           push_nesting = self['$push_nesting?']();
           if ($truthy(push_nesting)) {
-            self.$push("(Opal.Module.$$nesting = $nesting, ")};
+            self.$push("(Opal.Module.$$nesting = " + (self.$scope().$nesting()) + ", ")
+          };
           compile_default.$call();
           if ($truthy(push_nesting)) {
             return self.$push(")")
           } else {
             return nil
-          };}, $CallNode$48.$$s = self, $CallNode$48.$$arity = 1, $CallNode$48));
-        $send(self, 'add_special', ["eval"], ($CallNode$49 = function(compile_default){var self = $CallNode$49.$$s == null ? this : $CallNode$49.$$s, $ret_or_11 = nil, temp = nil, scope_variables = nil;
+          };}, {$$arity: 1, $$s: self});
+        $send(self, 'add_special', ["eval"], function $CallNode$31(compile_default){var self = $CallNode$31.$$s == null ? this : $CallNode$31.$$s, temp = nil, scope_variables = nil;
 
           
           
-          if (compile_default == null) {
-            compile_default = nil;
+          if (compile_default == null) compile_default = nil;;
+          if (($neqeq(self.$arglist().$children().$length(), 1) || ($not([self.$s("self"), nil]['$include?'](self.$recvr()))))) {
+            return compile_default.$call();
           };
-          if ($truthy((function() {if ($truthy(($ret_or_11 = self.$arglist().$children().$length()['$!='](1)))) {
-            return $ret_or_11
-          } else {
-            return [self.$s("self"), nil]['$include?'](self.$recvr())['$!']()
-          }; return nil; })())) {
-            return compile_default.$call();};
+          self.$scope().$nesting();
           temp = self.$scope().$new_temp();
           scope_variables = $send(self.$scope().$scope_locals(), 'map', [], "to_s".$to_proc()).$inspect();
-          self.$push("" + "(" + (temp) + " = ", self.$expr(self.$arglist()));
-          self.$push("" + ", typeof Opal.compile === 'function' ? eval(Opal.compile(" + (temp));
+          self.$push("(" + (temp) + " = ", self.$expr(self.$arglist()));
+          self.$push(", typeof Opal.compile === 'function' ? eval(Opal.compile(" + (temp));
           self.$push(", {scope_variables: ", scope_variables);
-          self.$push("" + ", arity_check: " + (self.$compiler()['$arity_check?']()) + ", file: '(eval)', eval: true})) : ");
-          return self.$push("" + "self.$eval(" + (temp) + "))");}, $CallNode$49.$$s = self, $CallNode$49.$$arity = 1, $CallNode$49));
-        $send(self, 'add_special', ["binding"], ($CallNode$50 = function(){var self = $CallNode$50.$$s == null ? this : $CallNode$50.$$s;
+          self.$push(", arity_check: " + (self.$compiler()['$arity_check?']()) + ", file: '(eval)', eval: true})) : ");
+          return self.$push("" + (self.$scope().$self()) + ".$eval(" + (temp) + "))");}, {$$arity: 1, $$s: self});
+        $send(self, 'add_special', ["local_variables"], function $CallNode$32(compile_default){var self = $CallNode$32.$$s == null ? this : $CallNode$32.$$s, scope_variables = nil;
+
+          
+          
+          if (compile_default == null) compile_default = nil;;
+          if (!$truthy([self.$s("self"), nil]['$include?'](self.$recvr()))) {
+            return compile_default.$call();
+          };
+          scope_variables = $send(self.$scope().$scope_locals(), 'map', [], "to_s".$to_proc()).$inspect();
+          return self.$push(scope_variables);}, {$$arity: 1, $$s: self});
+        $send(self, 'add_special', ["binding"], function $CallNode$33(compile_default){var self = $CallNode$33.$$s == null ? this : $CallNode$33.$$s;
 
           
+          
+          if (compile_default == null) compile_default = nil;;
+          if (!$truthy(self.$recvr()['$nil?']())) {
+            return compile_default.$call();
+          };
+          self.$scope().$nesting();
           self.$push("Opal.Binding.$new(");
           self.$push("  function($code, $value) {");
           self.$push("    if (typeof $value === 'undefined') {");
@@ -33710,130 +30715,157 @@ Opal.modules["opal/nodes/call"] = function(Opal) {
           self.$push("    }");
           self.$push("  },");
           self.$push("  ", $send(self.$scope().$scope_locals(), 'map', [], "to_s".$to_proc()).$inspect(), ",");
-          self.$push("  self,");
+          self.$push("  ", self.$scope().$self(), ",");
           self.$push("  ", self.$source_location());
-          return self.$push(")");}, $CallNode$50.$$s = self, $CallNode$50.$$arity = 0, $CallNode$50));
+          return self.$push(")");}, {$$arity: 1, $$s: self});
+        $send(self, 'add_special', ["__await__"], function $CallNode$34(compile_default){var self = $CallNode$34.$$s == null ? this : $CallNode$34.$$s, $writer = nil;
+
+          
+          
+          if (compile_default == null) compile_default = nil;;
+          if ($truthy(self.$compiler().$async_await())) {
+            
+            self.$push(self.$fragment("(await ("));
+            self.$push(self.$process(self.$recvr()));
+            self.$push(self.$fragment("))"));
+            
+            $writer = [true];
+            $send(self.$scope(), 'await_encountered=', $to_a($writer));
+            return $writer[$rb_minus($writer["length"], 1)];;
+          } else {
+            return compile_default.$call()
+          };}, {$$arity: 1, $$s: self});
         
-        Opal.def(self, '$push_nesting?', $CallNode_push_nesting$ques$51 = function() {
-          var self = this, recv = nil, $ret_or_12 = nil, $ret_or_13 = nil, $ret_or_14 = nil;
+        $def(self, '$push_nesting?', function $CallNode_push_nesting$ques$35() {
+          var self = this, recv = nil, $ret_or_1 = nil, $ret_or_2 = nil, $ret_or_3 = nil;
 
           
           recv = self.$children().$first();
-          if ($truthy(($ret_or_12 = self.$children().$size()['$=='](2)))) {
+          if ($truthy(($ret_or_1 = self.$children().$size()['$=='](2)))) {
             
-            if ($truthy(($ret_or_13 = recv['$nil?']()))) {
-              return $ret_or_13
+            if ($truthy(($ret_or_2 = recv['$nil?']()))) {
+              return $ret_or_2
             } else {
               
-              if ($truthy(($ret_or_14 = recv.$type()['$==']("const")))) {
+              if ($truthy(($ret_or_3 = recv.$type()['$==']("const")))) {
                 return recv.$children().$last()['$==']("Module")
               } else {
-                return $ret_or_14
+                return $ret_or_3
               };
             };
           } else {
-            return $ret_or_12
+            return $ret_or_1
           };
-        }, $CallNode_push_nesting$ques$51.$$arity = 0);
+        }, 0);
         return (function($base, $super, $parent_nesting) {
           var self = $klass($base, $super, 'DependencyResolver');
 
-          var $nesting = [self].concat($parent_nesting), $DependencyResolver_initialize$52, $DependencyResolver_resolve$53, $DependencyResolver_handle_part$54, $DependencyResolver_expand_path$56;
+          var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-          self.$$prototype.sexp = self.$$prototype.compiler = nil;
+          $proto.compiler = $proto.sexp = $proto.missing_dynamic_require = nil;
           
           
-          Opal.def(self, '$initialize', $DependencyResolver_initialize$52 = function $$initialize(compiler, sexp) {
-            var self = this;
+          $def(self, '$initialize', function $$initialize(compiler, sexp, missing_dynamic_require) {
+            var self = this, $ret_or_1 = nil;
 
             
+            
+            if (missing_dynamic_require == null) missing_dynamic_require = nil;;
             self.compiler = compiler;
-            return (self.sexp = sexp);
-          }, $DependencyResolver_initialize$52.$$arity = 2);
+            self.sexp = sexp;
+            return (self.missing_dynamic_require = ($truthy(($ret_or_1 = missing_dynamic_require)) ? ($ret_or_1) : (self.compiler.$dynamic_require_severity())));
+          }, -3);
           
-          Opal.def(self, '$resolve', $DependencyResolver_resolve$53 = function $$resolve() {
+          $def(self, '$resolve', function $$resolve() {
             var self = this;
 
             return self.$handle_part(self.sexp)
-          }, $DependencyResolver_resolve$53.$$arity = 0);
+          }, 0);
           
-          Opal.def(self, '$handle_part', $DependencyResolver_handle_part$54 = function $$handle_part(sexp) {
-            var $a, $b, $$55, self = this, type = nil, recv = nil, meth = nil, args = nil, parts = nil, $ret_or_15 = nil, $ret_or_16 = nil, msg = nil, $case = nil;
+          $def(self, '$handle_part', function $$handle_part(sexp, missing_dynamic_require) {
+            var $a, $b, self = this, $ret_or_1 = nil, recv = nil, meth = nil, args = nil, parts = nil;
 
             
-            type = sexp.$type();
-            if (type['$==']("str")) {
-              return sexp.$children()['$[]'](0)
-            } else if (type['$==']("send")) {
-              
-              $b = sexp.$children(), $a = Opal.to_ary($b), (recv = ($a[0] == null ? nil : $a[0])), (meth = ($a[1] == null ? nil : $a[1])), (args = $slice.call($a, 2)), $b;
-              parts = $send(args, 'map', [], ($$55 = function(s){var self = $$55.$$s == null ? this : $$55.$$s;
+            
+            if (missing_dynamic_require == null) missing_dynamic_require = self.missing_dynamic_require;;
+            if ($truthy(sexp)) {
+              if ($eqeqeq("str", ($ret_or_1 = sexp.$type()))) {
+                return sexp.$children()['$[]'](0)
+              } else if ($eqeqeq("dstr", $ret_or_1)) {
+                return $send(sexp.$children(), 'map', [], function $$36(i){var self = $$36.$$s == null ? this : $$36.$$s;
 
+                  
+                  
+                  if (i == null) i = nil;;
+                  return self.$handle_part(i);}, {$$arity: 1, $$s: self}).$join()
+              } else if ($eqeqeq("begin", $ret_or_1)) {
+                if ($eqeq(sexp.$children().$length(), 1)) {
+                  return self.$handle_part(sexp.$children()['$[]'](0))
+                }
+              } else if ($eqeqeq("send", $ret_or_1)) {
                 
-                
-                if (s == null) {
-                  s = nil;
+                $b = sexp.$children(), $a = $to_ary($b), (recv = ($a[0] == null ? nil : $a[0])), (meth = ($a[1] == null ? nil : $a[1])), (args = $slice.call($a, 2)), $b;
+                parts = $send(args, 'map', [], function $$37(s){var self = $$37.$$s == null ? this : $$37.$$s;
+
+                  
+                  
+                  if (s == null) s = nil;;
+                  return self.$handle_part(s, "ignore");}, {$$arity: 1, $$s: self});
+                if ($truthy(parts['$include?'](nil))) {
+                  return nil
+                };
+                if ((($truthy(recv['$is_a?']($$$($$$($Opal, 'AST'), 'Node'))) && ($eqeq(recv.$type(), "const"))) && ($eqeq(recv.$children().$last(), "File")))) {
+                  if ($eqeq(meth, "expand_path")) {
+                    return $send(self, 'expand_path', $to_a(parts))
+                  } else if ($eqeq(meth, "join")) {
+                    return self.$expand_path(parts.$join("/"))
+                  } else if ($eqeq(meth, "dirname")) {
+                    return self.$expand_path(parts['$[]'](0).$split("/")['$[]']($range(0, -1, true)).$join("/"))
+                  }
+                } else if ($eqeq(meth, "__dir__")) {
+                  return $$('File').$dirname($$$($$('Opal'), 'Compiler').$module_name(self.compiler.$file()))
                 };
-                return self.$handle_part(s);}, $$55.$$s = self, $$55.$$arity = 1, $$55));
-              if ($truthy((function() {if ($truthy(($ret_or_15 = (function() {if ($truthy(($ret_or_16 = recv['$is_a?']($$$($$$($$$('::', 'Opal'), 'AST'), 'Node'))))) {
-                return recv.$type()['$==']("const")
-              } else {
-                return $ret_or_16
-              }; return nil; })()))) {
-                return recv.$children().$last()['$==']("File")
               } else {
-                return $ret_or_15
-              }; return nil; })())) {
-                if (meth['$==']("expand_path")) {
-                  return $send(self, 'expand_path', Opal.to_a(parts))
-                } else if (meth['$==']("join")) {
-                  return self.$expand_path(parts.$join("/"))
-                } else if (meth['$==']("dirname")) {
-                  return self.$expand_path(parts['$[]'](0).$split("/")['$[]']($range(0, -1, true)).$join("/"))}};};
-            msg = "Cannot handle dynamic require";
-            return (function() {$case = self.compiler.$dynamic_require_severity();
-            if ("error"['$===']($case)) {return self.compiler.$error(msg, self.sexp.$line())}
-            else if ("warning"['$===']($case)) {return self.compiler.$warning(msg, self.sexp.$line())}
-            else { return nil }})();
-          }, $DependencyResolver_handle_part$54.$$arity = 1);
-          return (Opal.def(self, '$expand_path', $DependencyResolver_expand_path$56 = function $$expand_path(path, base) {
-            var $$57, self = this;
-
-            
-            
-            if (base == null) {
-              base = "";
+                nil
+              }
             };
-            return $send(((("" + (base)) + "/") + (path)).$split("/"), 'each_with_object', [[]], ($$57 = function(part, p){var self = $$57.$$s == null ? this : $$57.$$s;
-
+            if ($eqeqeq("error", ($ret_or_1 = missing_dynamic_require))) {
+              return self.compiler.$error("Cannot handle dynamic require", self.sexp.$line())
+            } else if ($eqeqeq("warning", $ret_or_1)) {
+              return self.compiler.$warning("Cannot handle dynamic require", self.sexp.$line())
+            } else {
+              return nil
+            };
+          }, -2);
+          return $def(self, '$expand_path', function $$expand_path(path, base) {
+            
+            
+            
+            if (base == null) base = "";;
+            return $send(((("" + (base)) + "/") + (path)).$split("/"), 'each_with_object', [[]], function $$38(part, p){
               
               
-              if (part == null) {
-                part = nil;
-              };
+              if (part == null) part = nil;;
               
-              if (p == null) {
-                p = nil;
-              };
-              if (part['$==']("")) {
+              if (p == null) p = nil;;
+              if ($eqeq(part, "")) {
                 return nil
-              } else if (part['$==']("..")) {
+              } else if ($eqeq(part, "..")) {
                 return p.$pop()
               } else {
                 return p['$<<'](part)
-              };}, $$57.$$s = self, $$57.$$arity = 2, $$57)).$join("/");
-          }, $DependencyResolver_expand_path$56.$$arity = -2), nil) && 'expand_path';
+              };}, 2).$join("/");
+          }, -2);
         })($nesting[0], null, $nesting);
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+      })($nesting[0], $$('Base'), $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/csend"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send;
+Opal.modules["opal/nodes/csend"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$helper', '$conditional_send', '$recv', '$receiver_sexp', '$push', '$compile_method_name', '$compile_arguments', '$compile_block_pass']);
+  Opal.add_stubs('require,handle,helper,conditional_send,recv,receiver_sexp,push,compile_method_name,compile_arguments,compile_block_pass');
   
   self.$require("opal/nodes/call");
   return (function($base, $parent_nesting) {
@@ -33844,43 +30876,39 @@ Opal.modules["opal/nodes/csend"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'CSendNode');
 
-        var $nesting = [self].concat($parent_nesting), $CSendNode_default_compile$1;
-
+        
         
         self.$handle("csend");
-        return (Opal.def(self, '$default_compile', $CSendNode_default_compile$1 = function $$default_compile() {
-          var $$2, self = this;
+        return $def(self, '$default_compile', function $$default_compile() {
+          var self = this;
 
           
           self.$helper("send");
-          return $send(self, 'conditional_send', [self.$recv(self.$receiver_sexp())], ($$2 = function(receiver_temp){var self = $$2.$$s == null ? this : $$2.$$s;
+          return $send(self, 'conditional_send', [self.$recv(self.$receiver_sexp())], function $$1(receiver_temp){var self = $$1.$$s == null ? this : $$1.$$s;
 
             
             
-            if (receiver_temp == null) {
-              receiver_temp = nil;
-            };
+            if (receiver_temp == null) receiver_temp = nil;;
             self.$push("$send(", receiver_temp);
             self.$compile_method_name();
             self.$compile_arguments();
             self.$compile_block_pass();
-            return self.$push(")");}, $$2.$$s = self, $$2.$$arity = 1, $$2));
-        }, $CSendNode_default_compile$1.$$arity = 0), nil) && 'default_compile';
-      })($nesting[0], $$($nesting, 'CallNode'), $nesting)
+            return self.$push(")");}, {$$arity: 1, $$s: self});
+        }, 0);
+      })($nesting[0], $$('CallNode'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/call_special"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $truthy = Opal.truthy;
+Opal.modules["opal/nodes/call_special"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $def = Opal.def, $send2 = Opal.send2, $find_super = Opal.find_super, $to_a = Opal.to_a, $truthy = Opal.truthy, $eqeq = Opal.eqeq, $send = Opal.send;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$push', '$recv', '$recvr', '$expr', '$property', '$value', '$<<', '$default_compile', '$meth', '$receiver_sexp', '$method_jsid', '$compile_arguments', '$iter', '$s', '$lhs', '$rhs', '$process']);
+  Opal.add_stubs('require,handle,children,push,recv,recvr,expr,property,value,<<,default_compile,meth,receiver_sexp,method_jsid,compile_arguments,iter,s,lhs,rhs,==,type,first,map,flatten,scan,to_proc,empty?,stmt?,process');
   
   self.$require("opal/nodes/base");
   self.$require("opal/nodes/call");
@@ -33892,118 +30920,128 @@ Opal.modules["opal/nodes/call_special"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
-      (function($base, $super, $parent_nesting) {
+      (function($base, $super) {
         var self = $klass($base, $super, 'JsAttrNode');
 
-        var $nesting = [self].concat($parent_nesting), $JsAttrNode_compile$1;
-
+        
         
         self.$handle("jsattr");
         self.$children("recvr", "property");
-        return (Opal.def(self, '$compile', $JsAttrNode_compile$1 = function $$compile() {
+        return $def(self, '$compile', function $$compile() {
           var self = this;
 
           return self.$push(self.$recv(self.$recvr()), "[", self.$expr(self.$property()), "]")
-        }, $JsAttrNode_compile$1.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'JsAttrAsgnNode');
 
-        var $nesting = [self].concat($parent_nesting), $JsAttrAsgnNode_compile$2;
-
+        
         
         self.$handle("jsattrasgn");
         self.$children("recvr", "property", "value");
-        return (Opal.def(self, '$compile', $JsAttrAsgnNode_compile$2 = function $$compile() {
+        return $def(self, '$compile', function $$compile() {
           var self = this;
 
           return self.$push(self.$recv(self.$recvr()), "[", self.$expr(self.$property()), "] = ", self.$expr(self.$value()))
-        }, $JsAttrAsgnNode_compile$2.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'JsCallNode');
 
-        var $nesting = [self].concat($parent_nesting), $JsCallNode_initialize$3, $JsCallNode_compile$4, $JsCallNode_method_jsid$5, $JsCallNode_compile_using_send$6;
+        var $proto = self.$$prototype;
 
-        self.$$prototype.iter = self.$$prototype.arglist = nil;
+        $proto.iter = $proto.arglist = nil;
         
         self.$handle("jscall");
         
-        Opal.def(self, '$initialize', $JsCallNode_initialize$3 = function $$initialize($a) {
-          var $post_args, $iter = $JsCallNode_initialize$3.$$p, $yield = $iter || nil, self = this, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        $def(self, '$initialize', function $$initialize($a) {
+          var $post_args, $rest_arg, $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $JsCallNode_initialize$3.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$initialize.$$p;
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
-          ;
-          $send2(self, $find_super(self, 'initialize', $JsCallNode_initialize$3, false, true), 'initialize', $zuper, $iter);
+          $post_args = Opal.slice.call(arguments);
+          
+          $rest_arg = $post_args;;
+          $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', $to_a($rest_arg), $yield);
           if ($truthy(self.iter)) {
-            self.arglist = self.arglist['$<<'](self.iter)};
+            self.arglist = self.arglist['$<<'](self.iter)
+          };
           return (self.iter = nil);
-        }, $JsCallNode_initialize$3.$$arity = -1);
+        }, -1);
         
-        Opal.def(self, '$compile', $JsCallNode_compile$4 = function $$compile() {
+        $def(self, '$compile', function $$compile() {
           var self = this;
 
           return self.$default_compile()
-        }, $JsCallNode_compile$4.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$method_jsid', $JsCallNode_method_jsid$5 = function $$method_jsid() {
+        $def(self, '$method_jsid', function $$method_jsid() {
           var self = this;
 
-          return "" + "." + (self.$meth())
-        }, $JsCallNode_method_jsid$5.$$arity = 0);
-        return (Opal.def(self, '$compile_using_send', $JsCallNode_compile_using_send$6 = function $$compile_using_send() {
+          return "." + (self.$meth())
+        }, 0);
+        return $def(self, '$compile_using_send', function $$compile_using_send() {
           var self = this;
 
           
           self.$push(self.$recv(self.$receiver_sexp()), self.$method_jsid(), ".apply(null");
           self.$compile_arguments();
           if ($truthy(self.$iter())) {
-            self.$push(".concat(", self.$expr(self.$iter()), ")")};
+            self.$push(".concat(", self.$expr(self.$iter()), ")")
+          };
           return self.$push(")");
-        }, $JsCallNode_compile_using_send$6.$$arity = 0), nil) && 'compile_using_send';
-      })($nesting[0], $$($nesting, 'CallNode'), $nesting);
-      return (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('CallNode'));
+      return (function($base, $super) {
         var self = $klass($base, $super, 'Match3Node');
 
-        var $nesting = [self].concat($parent_nesting), $Match3Node_compile$7;
+        var $proto = self.$$prototype;
 
-        self.$$prototype.level = nil;
+        $proto.level = nil;
         
         self.$handle("match_with_lvasgn");
         self.$children("lhs", "rhs");
-        return (Opal.def(self, '$compile', $Match3Node_compile$7 = function $$compile() {
-          var self = this, sexp = nil;
+        return $def(self, '$compile', function $$compile() {
+          var self = this, sexp = nil, re = nil, names = nil, names_def = nil;
 
           
           sexp = self.$s("send", self.$lhs(), "=~", self.$rhs());
+          if (($eqeq(self.$lhs().$type(), "regexp") && ($eqeq(self.$lhs().$children().$first().$type(), "str")))) {
+            
+            re = self.$lhs().$children().$first().$children().$first();
+            names = $send(re.$scan(/\(\?<([^>]*)>/).$flatten(), 'map', [], "to_sym".$to_proc());
+            if (!$truthy(names['$empty?']())) {
+              
+              names_def = self.$s("lvasgn", "$m3names", self.$s("if", self.$s("gvar", "$~"), self.$s("send", self.$s("gvar", "$~"), "named_captures"), self.$s("hash")));
+              names = $send(names, 'map', [], function $$1(name){var self = $$1.$$s == null ? this : $$1.$$s;
+
+                
+                
+                if (name == null) name = nil;;
+                return self.$s("lvasgn", name, self.$s("send", self.$s("lvar", "$m3names"), "[]", self.$s("sym", name)));}, {$$arity: 1, $$s: self});
+              if ($truthy(self['$stmt?']())) {
+                sexp = $send(self, 's', ["begin", sexp, names_def].concat($to_a(names)))
+              } else {
+                sexp = $send(self, 's', ["begin", self.$s("lvasgn", "$m3tmp", sexp), names_def].concat($to_a(names)).concat([self.$s("lvar", "$m3tmp")]))
+              };
+            };
+          };
           return self.$push(self.$process(sexp, self.level));
-        }, $Match3Node_compile$7.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
+        }, 0);
+      })($nesting[0], $$('Base'));
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/scope"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $send = Opal.send, $truthy = Opal.truthy, $hash2 = Opal.hash2;
+Opal.modules["opal/nodes/scope"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $to_a = Opal.to_a, $def = Opal.def, $send = Opal.send, $rb_minus = Opal.rb_minus, $truthy = Opal.truthy, $not = Opal.not, $rb_plus = Opal.rb_plus, $eqeq = Opal.eqeq, $hash2 = Opal.hash2;
 
-  Opal.add_stubs(['$require', '$attr_accessor', '$attr_reader', '$indent', '$scope', '$compiler', '$scope=', '$-', '$==', '$top?', '$top_scope', '$parent', '$iter?', '$!', '$class?', '$dup', '$push', '$map', '$ivars', '$gvars', '$parser_indent', '$empty?', '$join', '$+', '$fragment', '$def_in_class?', '$add_proto_ivar', '$include?', '$<<', '$has_local?', '$|', '$scope_locals', '$has_temp?', '$pop', '$next_temp', '$loop', '$succ', '$uses_block!', '$identify!', '$compact', '$name', '$scope_name', '$mid', '$unique_temp', '$add_scope_temp', '$def?', '$lambda?', '$type', '$nil?', '$rescue_else_sexp', '$last', '$class', '$collect_refinements_temps', '$add_scope_local', '$new_refinements_temp']);
+  Opal.add_stubs('require,attr_accessor,attr_reader,indent,scope,compiler,scope=,-,==,iter?,!,class?,dup,push,map,ivars,gvars,empty?,<<,parser_indent,join,+,fragment,def_in_class?,add_proto_ivar,include?,has_local?,|,scope_locals,reject,start_with?,to_s,has_temp?,pop,next_temp,loop,succ,uses_block!,identify!,valid_name?,mid,compact,parent,name,scope_name,unique_temp,lambda?,def?,type,nil?,rescue_else_sexp,last,class,collect_refinements_temps,add_scope_local,new_refinements_temp,identity,block_name=,add_temp,block_name,line');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -34014,14 +31052,14 @@ Opal.modules["opal/nodes/scope"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'ScopeNode');
 
-        var $nesting = [self].concat($parent_nesting), $ScopeNode_initialize$1, $ScopeNode_in_scope$2, $ScopeNode_class_scope$ques$4, $ScopeNode_class$ques$5, $ScopeNode_module$ques$6, $ScopeNode_sclass$ques$7, $ScopeNode_top$ques$8, $ScopeNode_top_scope$9, $ScopeNode_iter$ques$10, $ScopeNode_def$ques$11, $ScopeNode_lambda$ques$12, $ScopeNode_is_lambda$excl$13, $ScopeNode_defines_lambda$14, $ScopeNode_lambda_definition$ques$15, $ScopeNode_def_in_class$ques$16, $ScopeNode_to_vars$17, $ScopeNode_add_scope_ivar$22, $ScopeNode_add_scope_gvar$23, $ScopeNode_add_proto_ivar$24, $ScopeNode_add_arg$25, $ScopeNode_add_scope_local$26, $ScopeNode_has_local$ques$27, $ScopeNode_scope_locals$28, $ScopeNode_add_scope_temp$29, $ScopeNode_has_temp$ques$30, $ScopeNode_new_temp$31, $ScopeNode_next_temp$32, $ScopeNode_queue_temp$34, $ScopeNode_push_while$35, $ScopeNode_pop_while$36, $ScopeNode_in_while$ques$37, $ScopeNode_uses_block$excl$38, $ScopeNode_identify$excl$39, $ScopeNode_find_parent_def$40, $ScopeNode_super_chain$41, $ScopeNode_uses_block$ques$42, $ScopeNode_has_rescue_else$ques$43, $ScopeNode_in_rescue$44, $ScopeNode_current_rescue$45, $ScopeNode_in_resbody$46, $ScopeNode_in_resbody$ques$47, $ScopeNode_in_ensure$48, $ScopeNode_in_ensure$ques$49, $ScopeNode_gen_retry_id$50, $ScopeNode_accepts_using$ques$51, $ScopeNode_collect_refinements_temps$52, $ScopeNode_new_refinements_temp$53, $ScopeNode_refinements_temp$54;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.type = self.$$prototype.is_lambda = self.$$prototype.lambda_definition = self.$$prototype.defs = self.$$prototype.parent = self.$$prototype.temps = self.$$prototype.locals = self.$$prototype.compiler = self.$$prototype.proto_ivars = self.$$prototype.ivars = self.$$prototype.gvars = self.$$prototype.args = self.$$prototype.queue = self.$$prototype.while_stack = self.$$prototype.identity = self.$$prototype.uses_block = self.$$prototype.rescues = self.$$prototype.in_resbody = self.$$prototype.in_ensure = self.$$prototype.next_retry_id = self.$$prototype.refinements_temp = nil;
+        $proto.type = $proto.is_lambda = $proto.lambda_definition = $proto.defs = $proto.parent = $proto.temps = $proto.locals = $proto.proto_ivars = $proto.compiler = $proto.ivars = $proto.gvars = $proto.args = $proto.queue = $proto.while_stack = $proto.identity = $proto.uses_block = $proto.rescues = $proto.in_resbody = $proto.in_ensure = $proto.next_retry_id = $proto.refinements_temp = $proto.block_prepared = nil;
         
         self.$attr_accessor("parent");
         self.$attr_accessor("name");
@@ -34033,24 +31071,19 @@ Opal.modules["opal/nodes/scope"] = function(Opal) {
         self.$attr_accessor("mid");
         self.$attr_accessor("defs");
         self.$attr_reader("methods");
-        self.$attr_accessor("uses_super");
-        self.$attr_accessor("uses_zuper");
         self.$attr_accessor("catch_return", "has_break", "has_retry");
         self.$attr_accessor("rescue_else_sexp");
         
-        Opal.def(self, '$initialize', $ScopeNode_initialize$1 = function $$initialize($a) {
-          var $post_args, $iter = $ScopeNode_initialize$1.$$p, $yield = $iter || nil, self = this, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        $def(self, '$initialize', function $$initialize($a) {
+          var $post_args, $rest_arg, $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $ScopeNode_initialize$1.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$initialize.$$p;
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
-          ;
-          $send2(self, $find_super(self, 'initialize', $ScopeNode_initialize$1, false, true), 'initialize', $zuper, $iter);
+          $post_args = Opal.slice.call(arguments);
+          
+          $rest_arg = $post_args;;
+          $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', $to_a($rest_arg), $yield);
           self.locals = [];
           self.temps = [];
           self.args = [];
@@ -34066,29 +31099,29 @@ Opal.modules["opal/nodes/scope"] = function(Opal) {
           self.uses_block = false;
           self.in_ensure = false;
           return (self.proto_ivars = []);
-        }, $ScopeNode_initialize$1.$$arity = -1);
+        }, -1);
         
-        Opal.def(self, '$in_scope', $ScopeNode_in_scope$2 = function $$in_scope() {
-          var $$3, $iter = $ScopeNode_in_scope$2.$$p, $yield = $iter || nil, self = this;
+        $def(self, '$in_scope', function $$in_scope() {
+          var $yield = $$in_scope.$$p || nil, self = this;
 
-          if ($iter) $ScopeNode_in_scope$2.$$p = null;
-          return $send(self, 'indent', [], ($$3 = function(){var self = $$3.$$s == null ? this : $$3.$$s, $writer = nil;
+          delete $$in_scope.$$p;
+          return $send(self, 'indent', [], function $$1(){var self = $$1.$$s == null ? this : $$1.$$s, $writer = nil;
             if (self.parent == null) self.parent = nil;
 
             
             self.parent = self.$compiler().$scope();
             
             $writer = [self];
-            $send(self.$compiler(), 'scope=', Opal.to_a($writer));
+            $send(self.$compiler(), 'scope=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
             Opal.yield1($yield, self);
             
             $writer = [self.parent];
-            $send(self.$compiler(), 'scope=', Opal.to_a($writer));
-            return $writer[$rb_minus($writer["length"], 1)];;}, $$3.$$s = self, $$3.$$arity = 0, $$3))
-        }, $ScopeNode_in_scope$2.$$arity = 0);
+            $send(self.$compiler(), 'scope=', $to_a($writer));
+            return $writer[$rb_minus($writer["length"], 1)];;}, {$$arity: 0, $$s: self})
+        }, 0);
         
-        Opal.def(self, '$class_scope?', $ScopeNode_class_scope$ques$4 = function() {
+        $def(self, '$class_scope?', function $ScopeNode_class_scope$ques$2() {
           var self = this, $ret_or_1 = nil;
 
           if ($truthy(($ret_or_1 = self.type['$==']("class")))) {
@@ -34096,173 +31129,134 @@ Opal.modules["opal/nodes/scope"] = function(Opal) {
           } else {
             return self.type['$==']("module")
           }
-        }, $ScopeNode_class_scope$ques$4.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$class?', $ScopeNode_class$ques$5 = function() {
+        $def(self, '$class?', function $ScopeNode_class$ques$3() {
           var self = this;
 
           return self.type['$==']("class")
-        }, $ScopeNode_class$ques$5.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$module?', $ScopeNode_module$ques$6 = function() {
+        $def(self, '$module?', function $ScopeNode_module$ques$4() {
           var self = this;
 
           return self.type['$==']("module")
-        }, $ScopeNode_module$ques$6.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$sclass?', $ScopeNode_sclass$ques$7 = function() {
+        $def(self, '$sclass?', function $ScopeNode_sclass$ques$5() {
           var self = this;
 
           return self.type['$==']("sclass")
-        }, $ScopeNode_sclass$ques$7.$$arity = 0);
-        
-        Opal.def(self, '$top?', $ScopeNode_top$ques$8 = function() {
-          var self = this;
-
-          return self.type['$==']("top")
-        }, $ScopeNode_top$ques$8.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$top_scope', $ScopeNode_top_scope$9 = function $$top_scope() {
+        $def(self, '$top?', function $ScopeNode_top$ques$6() {
           var self = this;
 
-          if ($truthy(self['$top?']())) {
-            return self
-          } else {
-            return self.$parent().$top_scope()
-          }
-        }, $ScopeNode_top_scope$9.$$arity = 0);
+          return self.type['$==']("top")
+        }, 0);
         
-        Opal.def(self, '$iter?', $ScopeNode_iter$ques$10 = function() {
+        $def(self, '$iter?', function $ScopeNode_iter$ques$7() {
           var self = this;
 
           return self.type['$==']("iter")
-        }, $ScopeNode_iter$ques$10.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$def?', $ScopeNode_def$ques$11 = function() {
-          var self = this, $ret_or_2 = nil;
+        $def(self, '$def?', function $ScopeNode_def$ques$8() {
+          var self = this, $ret_or_1 = nil;
 
-          if ($truthy(($ret_or_2 = self.type['$==']("def")))) {
-            return $ret_or_2
+          if ($truthy(($ret_or_1 = self.type['$==']("def")))) {
+            return $ret_or_1
           } else {
             return self.type['$==']("defs")
           }
-        }, $ScopeNode_def$ques$11.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$lambda?', $ScopeNode_lambda$ques$12 = function() {
-          var self = this, $ret_or_3 = nil;
+        $def(self, '$lambda?', function $ScopeNode_lambda$ques$9() {
+          var self = this, $ret_or_1 = nil;
 
-          if ($truthy(($ret_or_3 = self['$iter?']()))) {
+          if ($truthy(($ret_or_1 = self['$iter?']()))) {
             return self.is_lambda
           } else {
-            return $ret_or_3
+            return $ret_or_1
           }
-        }, $ScopeNode_lambda$ques$12.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$is_lambda!', $ScopeNode_is_lambda$excl$13 = function() {
+        $def(self, '$is_lambda!', function $ScopeNode_is_lambda$excl$10() {
           var self = this;
 
           return (self.is_lambda = true)
-        }, $ScopeNode_is_lambda$excl$13.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$defines_lambda', $ScopeNode_defines_lambda$14 = function $$defines_lambda() {
-          var $iter = $ScopeNode_defines_lambda$14.$$p, $yield = $iter || nil, self = this;
+        $def(self, '$defines_lambda', function $$defines_lambda() {
+          var $yield = $$defines_lambda.$$p || nil, self = this;
 
-          if ($iter) $ScopeNode_defines_lambda$14.$$p = null;
+          delete $$defines_lambda.$$p;
           
           self.lambda_definition = true;
           Opal.yieldX($yield, []);
           return (self.lambda_definition = false);
-        }, $ScopeNode_defines_lambda$14.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$lambda_definition?', $ScopeNode_lambda_definition$ques$15 = function() {
+        $def(self, '$lambda_definition?', function $ScopeNode_lambda_definition$ques$11() {
           var self = this;
 
           return self.lambda_definition
-        }, $ScopeNode_lambda_definition$ques$15.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$def_in_class?', $ScopeNode_def_in_class$ques$16 = function() {
-          var self = this, $ret_or_4 = nil, $ret_or_5 = nil, $ret_or_6 = nil;
+        $def(self, '$def_in_class?', function $ScopeNode_def_in_class$ques$12() {
+          var self = this, $ret_or_1 = nil, $ret_or_2 = nil, $ret_or_3 = nil;
 
-          if ($truthy(($ret_or_4 = (function() {if ($truthy(($ret_or_5 = (function() {if ($truthy(($ret_or_6 = self.defs['$!']()))) {
-            return self.type['$==']("def")
-          } else {
-            return $ret_or_6
-          }; return nil; })()))) {
-            return self.parent
-          } else {
-            return $ret_or_5
-          }; return nil; })()))) {
+          if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = ($truthy(($ret_or_3 = self.defs['$!']())) ? (self.type['$==']("def")) : ($ret_or_3)))) ? (self.parent) : ($ret_or_2))))) {
             return self.parent['$class?']()
           } else {
-            return $ret_or_4
+            return $ret_or_1
           }
-        }, $ScopeNode_def_in_class$ques$16.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$to_vars', $ScopeNode_to_vars$17 = function $$to_vars() {
-          var $$18, $$19, $$20, $$21, self = this, vars = nil, iv = nil, gv = nil, indent = nil, str = nil, $ret_or_7 = nil, pvars = nil, result = nil;
+        $def(self, '$to_vars', function $$to_vars() {
+          var self = this, vars = nil, iv = nil, gv = nil, indent = nil, str = nil, pvars = nil;
 
           
           vars = self.temps.$dup();
-          $send(vars, 'push', Opal.to_a($send(self.locals, 'map', [], ($$18 = function(l){var self = $$18.$$s == null ? this : $$18.$$s;
-
+          $send(vars, 'push', $to_a($send(self.locals, 'map', [], function $$13(l){
             
             
-            if (l == null) {
-              l = nil;
-            };
-            return "" + (l) + " = nil";}, $$18.$$s = self, $$18.$$arity = 1, $$18))));
-          iv = $send(self.$ivars(), 'map', [], ($$19 = function(ivar){var self = $$19.$$s == null ? this : $$19.$$s;
-
+            if (l == null) l = nil;;
+            return "" + (l) + " = nil";}, 1)));
+          iv = $send(self.$ivars(), 'map', [], function $$14(ivar){
             
             
-            if (ivar == null) {
-              ivar = nil;
-            };
-            return "" + "if (self" + (ivar) + " == null) self" + (ivar) + " = nil;\n";}, $$19.$$s = self, $$19.$$arity = 1, $$19));
-          gv = $send(self.$gvars(), 'map', [], ($$20 = function(gvar){var self = $$20.$$s == null ? this : $$20.$$s;
-
+            if (ivar == null) ivar = nil;;
+            return "if (self" + (ivar) + " == null) self" + (ivar) + " = nil;\n";}, 1);
+          gv = $send(self.$gvars(), 'map', [], function $$15(gvar){
             
             
-            if (gvar == null) {
-              gvar = nil;
-            };
-            return "" + "if ($gvars" + (gvar) + " == null) $gvars" + (gvar) + " = nil;\n";}, $$20.$$s = self, $$20.$$arity = 1, $$20));
+            if (gvar == null) gvar = nil;;
+            return "if ($gvars" + (gvar) + " == null) $gvars" + (gvar) + " = nil;\n";}, 1);
+          if (($truthy(self['$class?']()) && ($not(self.proto_ivars['$empty?']())))) {
+            vars['$<<']("$proto = self.$$prototype")
+          };
           indent = self.compiler.$parser_indent();
-          str = (function() {if ($truthy(vars['$empty?']())) {
-            return ""
-          } else {
-            return "" + "var " + (vars.$join(", ")) + ";\n"
-          }; return nil; })();
-          if ($truthy(self.$ivars()['$empty?']())) {
-          } else {
+          str = ($truthy(vars['$empty?']()) ? ("") : ("var " + (vars.$join(", ")) + ";\n"));
+          if (!$truthy(self.$ivars()['$empty?']())) {
             str = $rb_plus(str, "" + (indent) + (iv.$join(indent)))
           };
-          if ($truthy(self.$gvars()['$empty?']())) {
-          } else {
+          if (!$truthy(self.$gvars()['$empty?']())) {
             str = $rb_plus(str, "" + (indent) + (gv.$join(indent)))
           };
-          if ($truthy((function() {if ($truthy(($ret_or_7 = self['$class?']()))) {
-            return self.proto_ivars['$empty?']()['$!']()
-          } else {
-            return $ret_or_7
-          }; return nil; })())) {
+          if (($truthy(self['$class?']()) && ($not(self.proto_ivars['$empty?']())))) {
             
-            pvars = $send(self.proto_ivars, 'map', [], ($$21 = function(i){var self = $$21.$$s == null ? this : $$21.$$s;
-
+            pvars = $send(self.proto_ivars, 'map', [], function $$16(i){
               
               
-              if (i == null) {
-                i = nil;
-              };
-              return "" + "self.$$prototype" + (i);}, $$21.$$s = self, $$21.$$arity = 1, $$21)).$join(" = ");
-            result = "" + (str) + "\n" + (indent) + (pvars) + " = nil;";
-          } else {
-            result = str
+              if (i == null) i = nil;;
+              return "$proto" + (i);}, 1).$join(" = ");
+            str = "" + (str) + "\n" + (indent) + (pvars) + " = nil;";
           };
-          return self.$fragment(result);
-        }, $ScopeNode_to_vars$17.$$arity = 0);
+          return self.$fragment(str);
+        }, 0);
         
-        Opal.def(self, '$add_scope_ivar', $ScopeNode_add_scope_ivar$22 = function $$add_scope_ivar(ivar) {
+        $def(self, '$add_scope_ivar', function $$add_scope_ivar(ivar) {
           var self = this;
 
           if ($truthy(self['$def_in_class?']())) {
@@ -34272,9 +31266,9 @@ Opal.modules["opal/nodes/scope"] = function(Opal) {
           } else {
             return self.ivars['$<<'](ivar)
           }
-        }, $ScopeNode_add_scope_ivar$22.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$add_scope_gvar', $ScopeNode_add_scope_gvar$23 = function $$add_scope_gvar(gvar) {
+        $def(self, '$add_scope_gvar', function $$add_scope_gvar(gvar) {
           var self = this;
 
           if ($truthy(self.gvars['$include?'](gvar))) {
@@ -34282,9 +31276,9 @@ Opal.modules["opal/nodes/scope"] = function(Opal) {
           } else {
             return self.gvars['$<<'](gvar)
           }
-        }, $ScopeNode_add_scope_gvar$23.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$add_proto_ivar', $ScopeNode_add_proto_ivar$24 = function $$add_proto_ivar(ivar) {
+        $def(self, '$add_proto_ivar', function $$add_proto_ivar(ivar) {
           var self = this;
 
           if ($truthy(self.proto_ivars['$include?'](ivar))) {
@@ -34292,365 +31286,371 @@ Opal.modules["opal/nodes/scope"] = function(Opal) {
           } else {
             return self.proto_ivars['$<<'](ivar)
           }
-        }, $ScopeNode_add_proto_ivar$24.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$add_arg', $ScopeNode_add_arg$25 = function $$add_arg(arg) {
+        $def(self, '$add_arg', function $$add_arg(arg) {
           var self = this;
 
           
-          if ($truthy(self.args['$include?'](arg))) {
-          } else {
+          if (!$truthy(self.args['$include?'](arg))) {
             self.args['$<<'](arg)
           };
           return arg;
-        }, $ScopeNode_add_arg$25.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$add_scope_local', $ScopeNode_add_scope_local$26 = function $$add_scope_local(local) {
+        $def(self, '$add_scope_local', function $$add_scope_local(local) {
           var self = this;
 
           
           if ($truthy(self['$has_local?'](local))) {
-            return nil};
+            return nil
+          };
           return self.locals['$<<'](local);
-        }, $ScopeNode_add_scope_local$26.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$has_local?', $ScopeNode_has_local$ques$27 = function(local) {
-          var self = this, $ret_or_8 = nil, $ret_or_9 = nil, $ret_or_10 = nil;
+        $def(self, '$has_local?', function $ScopeNode_has_local$ques$17(local) {
+          var self = this;
 
           
-          if ($truthy((function() {if ($truthy(($ret_or_8 = (function() {if ($truthy(($ret_or_9 = self.locals['$include?'](local)))) {
-            return $ret_or_9
-          } else {
-            return self.args['$include?'](local)
-          }; return nil; })()))) {
-            return $ret_or_8
-          } else {
-            return self.temps['$include?'](local)
-          }; return nil; })())) {
-            return true};
-          if ($truthy((function() {if ($truthy(($ret_or_10 = self.parent))) {
-            return self.type['$==']("iter")
-          } else {
-            return $ret_or_10
-          }; return nil; })())) {
-            return self.parent['$has_local?'](local)};
+          if ((($truthy(self.locals['$include?'](local)) || ($truthy(self.args['$include?'](local)))) || ($truthy(self.temps['$include?'](local))))) {
+            return true
+          };
+          if (($truthy(self.parent) && ($eqeq(self.type, "iter")))) {
+            return self.parent['$has_local?'](local)
+          };
           return false;
-        }, $ScopeNode_has_local$ques$27.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$scope_locals', $ScopeNode_scope_locals$28 = function $$scope_locals() {
-          var self = this, $ret_or_11 = nil;
+        $def(self, '$scope_locals', function $$scope_locals() {
+          var self = this, locals = nil;
 
-          return self.locals['$|'](self.args)['$|']((function() {if ($truthy((function() {if ($truthy(($ret_or_11 = self.parent))) {
-            return self.type['$==']("iter")
-          } else {
-            return $ret_or_11
-          }; return nil; })())) {
-            return self.parent.$scope_locals()
-          } else {
-            return []
-          }; return nil; })())
-        }, $ScopeNode_scope_locals$28.$$arity = 0);
+          
+          locals = self.locals['$|'](self.args)['$|']((($truthy(self.parent) && ($eqeq(self.type, "iter"))) ? (self.parent.$scope_locals()) : ([])));
+          return $send(locals, 'reject', [], function $$18(i){
+            
+            
+            if (i == null) i = nil;;
+            return i.$to_s()['$start_with?']("$");}, 1);
+        }, 0);
         
-        Opal.def(self, '$add_scope_temp', $ScopeNode_add_scope_temp$29 = function $$add_scope_temp(tmp) {
+        $def(self, '$add_scope_temp', function $$add_scope_temp(tmp) {
           var self = this;
 
           
           if ($truthy(self['$has_temp?'](tmp))) {
-            return nil};
+            return nil
+          };
           return self.temps.$push(tmp);
-        }, $ScopeNode_add_scope_temp$29.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$has_temp?', $ScopeNode_has_temp$ques$30 = function(tmp) {
+        $def(self, '$has_temp?', function $ScopeNode_has_temp$ques$19(tmp) {
           var self = this;
 
           return self.temps['$include?'](tmp)
-        }, $ScopeNode_has_temp$ques$30.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$new_temp', $ScopeNode_new_temp$31 = function $$new_temp() {
+        $def(self, '$new_temp', function $$new_temp() {
           var self = this, tmp = nil;
 
           
-          if ($truthy(self.queue['$empty?']())) {
-          } else {
+          if (!$truthy(self.queue['$empty?']())) {
             return self.queue.$pop()
           };
           tmp = self.$next_temp();
           self.temps['$<<'](tmp);
           return tmp;
-        }, $ScopeNode_new_temp$31.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$next_temp', $ScopeNode_next_temp$32 = function $$next_temp() {
-          var $$33, self = this, tmp = nil;
+        $def(self, '$next_temp', function $$next_temp() {
+          var self = this, tmp = nil;
 
           
           tmp = nil;
-          (function(){var $brk = Opal.new_brk(); try {return $send(self, 'loop', [], ($$33 = function(){var self = $$33.$$s == null ? this : $$33.$$s;
+          (function(){var $brk = Opal.new_brk(); try {return $send(self, 'loop', [], function $$20(){var self = $$20.$$s == null ? this : $$20.$$s;
             if (self.unique == null) self.unique = nil;
 
             
-            tmp = "" + "$" + (self.unique);
+            tmp = "$" + (self.unique);
             self.unique = self.unique.$succ();
             if ($truthy(self['$has_local?'](tmp))) {
               return nil
             } else {
               
               Opal.brk(nil, $brk)
-            };}, $$33.$$s = self, $$33.$$brk = $brk, $$33.$$arity = 0, $$33))
+            };}, {$$arity: 0, $$s: self, $$brk: $brk})
           } catch (err) { if (err === $brk) { return err.$v } else { throw err } }})();
           return tmp;
-        }, $ScopeNode_next_temp$32.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$queue_temp', $ScopeNode_queue_temp$34 = function $$queue_temp(name) {
+        $def(self, '$queue_temp', function $$queue_temp(name) {
           var self = this;
 
           return self.queue['$<<'](name)
-        }, $ScopeNode_queue_temp$34.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$push_while', $ScopeNode_push_while$35 = function $$push_while() {
+        $def(self, '$push_while', function $$push_while() {
           var self = this, info = nil;
 
           
           info = $hash2([], {});
           self.while_stack.$push(info);
           return info;
-        }, $ScopeNode_push_while$35.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$pop_while', $ScopeNode_pop_while$36 = function $$pop_while() {
+        $def(self, '$pop_while', function $$pop_while() {
           var self = this;
 
           return self.while_stack.$pop()
-        }, $ScopeNode_pop_while$36.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$in_while?', $ScopeNode_in_while$ques$37 = function() {
+        $def(self, '$in_while?', function $ScopeNode_in_while$ques$21() {
           var self = this;
 
           return self.while_stack['$empty?']()['$!']()
-        }, $ScopeNode_in_while$ques$37.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$uses_block!', $ScopeNode_uses_block$excl$38 = function() {
-          var self = this, $ret_or_12 = nil;
+        $def(self, '$uses_block!', function $ScopeNode_uses_block$excl$22() {
+          var self = this;
 
-          if ($truthy((function() {if ($truthy(($ret_or_12 = self.type['$==']("iter")))) {
-            return self.parent
-          } else {
-            return $ret_or_12
-          }; return nil; })())) {
+          if (($eqeq(self.type, "iter") && ($truthy(self.parent)))) {
             return self.parent['$uses_block!']()
           } else {
             
             self.uses_block = true;
             return self['$identify!']();
           }
-        }, $ScopeNode_uses_block$excl$38.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$identify!', $ScopeNode_identify$excl$39 = function(name) {
-          var self = this, $ret_or_13 = nil, $ret_or_14 = nil, $ret_or_15 = nil;
+        $def(self, '$identify!', function $ScopeNode_identify$excl$23(name) {
+          var self = this, $ret_or_1 = nil, $ret_or_2 = nil, $ret_or_3 = nil;
 
           
           
-          if (name == null) {
-            name = nil;
-          };
+          if (name == null) name = nil;;
           if ($truthy(self.identity)) {
-            return self.identity};
-          name = (function() {if ($truthy(($ret_or_13 = name))) {
-            return $ret_or_13
+            return self.identity
+          };
+          if ($truthy(self['$valid_name?'](self.$mid()))) {
+            self.identity = "$$" + (self.$mid())
           } else {
-            return [(function() {if ($truthy(($ret_or_14 = self.$parent()))) {
-              
-              if ($truthy(($ret_or_15 = self.$parent().$name()))) {
-                return $ret_or_15
-              } else {
-                return self.$parent().$scope_name()
-              };
-            } else {
-              return $ret_or_14
-            }; return nil; })(), self.$mid()].$compact().$join("_")
-          }; return nil; })();
-          self.identity = self.compiler.$unique_temp(name);
-          if ($truthy(self.parent)) {
-            self.parent.$add_scope_temp(self.identity)};
+            
+            name = ($truthy(($ret_or_1 = name)) ? ($ret_or_1) : ([($truthy(($ret_or_2 = self.$parent())) ? (($truthy(($ret_or_3 = self.$parent().$name())) ? ($ret_or_3) : (self.$parent().$scope_name()))) : ($ret_or_2)), self.$mid()].$compact().$join("_")));
+            self.identity = self.compiler.$unique_temp(name);
+          };
           return self.identity;
-        }, $ScopeNode_identify$excl$39.$$arity = -1);
+        }, -1);
         self.$attr_reader("identity");
         
-        Opal.def(self, '$find_parent_def', $ScopeNode_find_parent_def$40 = function $$find_parent_def() {
-          var $a, self = this, scope = nil, $ret_or_16 = nil;
+        $def(self, '$find_parent_def', function $$find_parent_def() {
+          var $a, self = this, scope = nil;
 
           
           scope = self;
           while ($truthy((scope = scope.$parent()))) {
-            if ($truthy((function() {if ($truthy(($ret_or_16 = scope['$def?']()))) {
-              return $ret_or_16
-            } else {
-              return scope['$lambda?']()
-            }; return nil; })())) {
-              return scope}
+            if (($truthy(scope['$def?']()) || ($truthy(scope['$lambda?']())))) {
+              return scope
+            }
           };
           return nil;
-        }, $ScopeNode_find_parent_def$40.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$super_chain', $ScopeNode_super_chain$41 = function $$super_chain() {
+        $def(self, '$super_chain', function $$super_chain() {
           var $a, self = this, chain = nil, scope = nil, defn = nil, mid = nil;
 
           
           $a = [[], self, "null", "null"], (chain = $a[0]), (scope = $a[1]), (defn = $a[2]), (mid = $a[3]), $a;
           while ($truthy(scope)) {
-            if (scope.$type()['$==']("iter")) {
+            if ($eqeq(scope.$type(), "iter")) {
               
               chain['$<<'](scope['$identify!']());
               if ($truthy(scope.$parent())) {
-                scope = scope.$parent()};
+                scope = scope.$parent()
+              };
             } else if ($truthy(["def", "defs"]['$include?'](scope.$type()))) {
               
               defn = scope['$identify!']();
-              mid = "" + "'" + (scope.$mid()) + "'";
+              mid = "'" + (scope.$mid()) + "'";
               break;;
             } else {
               break;
             }
           };
           return [chain, defn, mid];
-        }, $ScopeNode_super_chain$41.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$uses_block?', $ScopeNode_uses_block$ques$42 = function() {
+        $def(self, '$uses_block?', function $ScopeNode_uses_block$ques$24() {
           var self = this;
 
           return self.uses_block
-        }, $ScopeNode_uses_block$ques$42.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$has_rescue_else?', $ScopeNode_has_rescue_else$ques$43 = function() {
+        $def(self, '$has_rescue_else?', function $ScopeNode_has_rescue_else$ques$25() {
           var self = this;
 
           return self.$rescue_else_sexp()['$nil?']()['$!']()
-        }, $ScopeNode_has_rescue_else$ques$43.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$in_rescue', $ScopeNode_in_rescue$44 = function $$in_rescue(node) {
-          var $iter = $ScopeNode_in_rescue$44.$$p, $yield = $iter || nil, self = this, $ret_or_17 = nil, result = nil;
+        $def(self, '$in_rescue', function $$in_rescue(node) {
+          var $yield = $$in_rescue.$$p || nil, self = this, $ret_or_1 = nil, result = nil;
 
-          if ($iter) $ScopeNode_in_rescue$44.$$p = null;
+          delete $$in_rescue.$$p;
           
-          self.rescues = (function() {if ($truthy(($ret_or_17 = self.rescues))) {
-            return $ret_or_17
-          } else {
-            return []
-          }; return nil; })();
+          self.rescues = ($truthy(($ret_or_1 = self.rescues)) ? ($ret_or_1) : ([]));
           self.rescues.$push(node);
           result = Opal.yieldX($yield, []);
           self.rescues.$pop();
           return result;
-        }, $ScopeNode_in_rescue$44.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$current_rescue', $ScopeNode_current_rescue$45 = function $$current_rescue() {
+        $def(self, '$current_rescue', function $$current_rescue() {
           var self = this;
 
           return self.rescues.$last()
-        }, $ScopeNode_current_rescue$45.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$in_resbody', $ScopeNode_in_resbody$46 = function $$in_resbody() {
-          var $iter = $ScopeNode_in_resbody$46.$$p, $yield = $iter || nil, self = this, result = nil;
+        $def(self, '$in_resbody', function $$in_resbody() {
+          var $yield = $$in_resbody.$$p || nil, self = this, result = nil;
 
-          if ($iter) $ScopeNode_in_resbody$46.$$p = null;
+          delete $$in_resbody.$$p;
           
-          if (($yield !== nil)) {
-          } else {
+          if (!($yield !== nil)) {
             return nil
           };
           self.in_resbody = true;
           result = Opal.yieldX($yield, []);
           self.in_resbody = false;
           return result;
-        }, $ScopeNode_in_resbody$46.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$in_resbody?', $ScopeNode_in_resbody$ques$47 = function() {
+        $def(self, '$in_resbody?', function $ScopeNode_in_resbody$ques$26() {
           var self = this;
 
           return self.in_resbody
-        }, $ScopeNode_in_resbody$ques$47.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$in_ensure', $ScopeNode_in_ensure$48 = function $$in_ensure() {
-          var $iter = $ScopeNode_in_ensure$48.$$p, $yield = $iter || nil, self = this, result = nil;
+        $def(self, '$in_ensure', function $$in_ensure() {
+          var $yield = $$in_ensure.$$p || nil, self = this, result = nil;
 
-          if ($iter) $ScopeNode_in_ensure$48.$$p = null;
+          delete $$in_ensure.$$p;
           
-          if (($yield !== nil)) {
-          } else {
+          if (!($yield !== nil)) {
             return nil
           };
           self.in_ensure = true;
           result = Opal.yieldX($yield, []);
           self.in_ensure = false;
           return result;
-        }, $ScopeNode_in_ensure$48.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$in_ensure?', $ScopeNode_in_ensure$ques$49 = function() {
+        $def(self, '$in_ensure?', function $ScopeNode_in_ensure$ques$27() {
           var self = this;
 
           return self.in_ensure
-        }, $ScopeNode_in_ensure$ques$49.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$gen_retry_id', $ScopeNode_gen_retry_id$50 = function $$gen_retry_id() {
-          var self = this, $ret_or_18 = nil;
+        $def(self, '$gen_retry_id', function $$gen_retry_id() {
+          var self = this, $ret_or_1 = nil;
 
           
-          self.next_retry_id = (function() {if ($truthy(($ret_or_18 = self.next_retry_id))) {
-            return $ret_or_18
-          } else {
-            return "retry_0"
-          }; return nil; })();
+          self.next_retry_id = ($truthy(($ret_or_1 = self.next_retry_id)) ? ($ret_or_1) : ("retry_0"));
           return (self.next_retry_id = self.next_retry_id.$succ());
-        }, $ScopeNode_gen_retry_id$50.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$accepts_using?', $ScopeNode_accepts_using$ques$51 = function() {
+        $def(self, '$accepts_using?', function $ScopeNode_accepts_using$ques$28() {
           var self = this;
 
-          return [$$($nesting, 'TopNode'), $$($nesting, 'ModuleNode'), $$($nesting, 'ClassNode'), $$($nesting, 'IterNode')]['$include?'](self.$class())
-        }, $ScopeNode_accepts_using$ques$51.$$arity = 0);
+          return [$$('TopNode'), $$('ModuleNode'), $$('ClassNode'), $$('IterNode')]['$include?'](self.$class())
+        }, 0);
         
-        Opal.def(self, '$collect_refinements_temps', $ScopeNode_collect_refinements_temps$52 = function $$collect_refinements_temps(temps) {
+        $def(self, '$collect_refinements_temps', function $$collect_refinements_temps(temps) {
           var self = this;
 
           
           
-          if (temps == null) {
-            temps = [];
-          };
+          if (temps == null) temps = [];;
           if ($truthy(self.refinements_temp)) {
-            temps['$<<'](self.refinements_temp)};
+            temps['$<<'](self.refinements_temp)
+          };
           if ($truthy(self.$parent())) {
-            return self.$parent().$collect_refinements_temps(temps)};
+            return self.$parent().$collect_refinements_temps(temps)
+          };
           return temps;
-        }, $ScopeNode_collect_refinements_temps$52.$$arity = -1);
+        }, -1);
         
-        Opal.def(self, '$new_refinements_temp', $ScopeNode_new_refinements_temp$53 = function $$new_refinements_temp() {
+        $def(self, '$new_refinements_temp', function $$new_refinements_temp() {
           var self = this, var$ = nil;
 
           
           var$ = self.$compiler().$unique_temp("$refn");
           self.$add_scope_local(var$);
           return var$;
-        }, $ScopeNode_new_refinements_temp$53.$$arity = 0);
-        return (Opal.def(self, '$refinements_temp', $ScopeNode_refinements_temp$54 = function $$refinements_temp() {
+        }, 0);
+        
+        $def(self, '$refinements_temp', function $$refinements_temp() {
           var $a, self = this, prev = nil, curr = nil;
 
           
           $a = [self.refinements_temp, self.$new_refinements_temp()], (prev = $a[0]), (curr = $a[1]), $a;
           self.refinements_temp = curr;
           return [prev, curr];
-        }, $ScopeNode_refinements_temp$54.$$arity = 0), nil) && 'refinements_temp';
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+        }, 0);
+        
+        $def(self, '$self', function $$self() {
+          var self = this;
+
+          
+          self.define_self = true;
+          return "self";
+        }, 0);
+        
+        $def(self, '$nesting', function $$nesting() {
+          var self = this;
+
+          
+          self.define_nesting = true;
+          return "$nesting";
+        }, 0);
+        
+        $def(self, '$relative_access', function $$relative_access() {
+          var self = this;
+
+          
+          self.define_relative_access = (self.define_nesting = true);
+          return "$$";
+        }, 0);
+        
+        $def(self, '$prepare_block', function $$prepare_block(block_name) {
+          var self = this, scope_name = nil, $writer = nil;
+
+          
+          
+          if (block_name == null) block_name = nil;;
+          scope_name = self.$scope().$identity();
+          if ($truthy(block_name)) {
+            
+            $writer = [block_name];
+            $send(self, 'block_name=', $to_a($writer));
+            $writer[$rb_minus($writer["length"], 1)];
+          };
+          self.$add_temp("" + (self.$block_name()) + " = " + (scope_name) + ".$$p || nil");
+          if ($truthy(self.block_prepared)) {
+            return nil
+          } else {
+            
+            self.$line("delete " + (scope_name) + ".$$p;");
+            return (self.block_prepared = true);
+          };
+        }, -1);
+        return self.$attr_accessor("await_encountered");
+      })($nesting[0], $$('Base'), $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/module"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy;
+Opal.modules["opal/nodes/module"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $to_ary = Opal.to_ary, $truthy = Opal.truthy, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $rb_plus = Opal.rb_plus, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$name_and_base', '$helper', '$push', '$line', '$in_scope', '$name=', '$scope', '$-', '$compile_body', '$private', '$cid', '$nil?', '$expr', '$add_temp', '$stmt', '$returns', '$compiler', '$body', '$s', '$empty_line', '$to_vars']);
+  Opal.add_stubs('require,handle,children,name_and_base,helper,nil?,body,stmt?,unshift,line,in_scope,name=,scope,-,compile_body,await_encountered,await_encountered=,parent,+,nesting,private,cid,expr,stmt,returns,compiler,empty_line,add_temp,to_vars');
   
   self.$require("opal/nodes/scope");
   return (function($base, $parent_nesting) {
@@ -34661,75 +31661,94 @@ Opal.modules["opal/nodes/module"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'ModuleNode');
 
-        var $nesting = [self].concat($parent_nesting), $ModuleNode_compile$1, $ModuleNode_name_and_base$3, $ModuleNode_compile_body$4;
+        var $proto = self.$$prototype;
 
+        $proto.define_nesting = $proto.define_relative_access = nil;
         
         self.$handle("module");
         self.$children("cid", "body");
         
-        Opal.def(self, '$compile', $ModuleNode_compile$1 = function $$compile() {
-          var $a, $b, $$2, self = this, name = nil, base = nil;
+        $def(self, '$compile', function $$compile() {
+          var $a, $b, self = this, name = nil, base = nil, await_begin = nil, await_end = nil, async = nil, $writer = nil;
 
           
-          $b = self.$name_and_base(), $a = Opal.to_ary($b), (name = ($a[0] == null ? nil : $a[0])), (base = ($a[1] == null ? nil : $a[1])), $b;
+          $b = self.$name_and_base(), $a = $to_ary($b), (name = ($a[0] == null ? nil : $a[0])), (base = ($a[1] == null ? nil : $a[1])), $b;
           self.$helper("module");
-          self.$push("(function($base, $parent_nesting) {");
-          self.$line("" + "  var self = $module($base, '" + (name) + "');");
-          $send(self, 'in_scope', [], ($$2 = function(){var self = $$2.$$s == null ? this : $$2.$$s, $writer = nil;
-
-            
+          if ($truthy(self.$body()['$nil?']())) {
+            if ($truthy(self['$stmt?']())) {
+              return self.$unshift("$module(", base, ", '" + (name) + "')")
+            } else {
+              return self.$unshift("($module(", base, ", '" + (name) + "'), nil)")
+            }
+          } else {
             
-            $writer = [name];
-            $send(self.$scope(), 'name=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];;
-            return self.$compile_body();}, $$2.$$s = self, $$2.$$arity = 0, $$2));
-          return self.$line("})(", base, ", $nesting)");
-        }, $ModuleNode_compile$1.$$arity = 0);
+            self.$line("  var self = $module($base, '" + (name) + "');");
+            $send(self, 'in_scope', [], function $$1(){var self = $$1.$$s == null ? this : $$1.$$s, $writer = nil;
+
+              
+              
+              $writer = [name];
+              $send(self.$scope(), 'name=', $to_a($writer));
+              $writer[$rb_minus($writer["length"], 1)];;
+              return self.$compile_body();}, {$$arity: 0, $$s: self});
+            if ($truthy(self.$await_encountered())) {
+              
+              await_begin = "(await ";
+              await_end = ")";
+              async = "async ";
+              
+              $writer = [true];
+              $send(self.$parent(), 'await_encountered=', $to_a($writer));
+              $writer[$rb_minus($writer["length"], 1)];;
+            } else {
+              $a = ["", "", ""], (await_begin = $a[0]), (await_end = $a[1]), (async = $a[2]), $a
+            };
+            self.$unshift("" + (await_begin) + "(" + (async) + "function($base" + (($truthy(self.define_nesting) ? (", $parent_nesting") : nil)) + ") {");
+            return self.$line("})(", base, "" + (($truthy(self.define_nesting) ? ($rb_plus(", ", self.$scope().$nesting())) : nil)) + ")" + (await_end));
+          };
+        }, 0);
         self.$private();
         
-        Opal.def(self, '$name_and_base', $ModuleNode_name_and_base$3 = function $$name_and_base() {
+        $def(self, '$name_and_base', function $$name_and_base() {
           var $a, $b, self = this, base = nil, name = nil;
 
           
-          $b = self.$cid().$children(), $a = Opal.to_ary($b), (base = ($a[0] == null ? nil : $a[0])), (name = ($a[1] == null ? nil : $a[1])), $b;
+          $b = self.$cid().$children(), $a = $to_ary($b), (base = ($a[0] == null ? nil : $a[0])), (name = ($a[1] == null ? nil : $a[1])), $b;
           if ($truthy(base['$nil?']())) {
-            return [name, "$nesting[0]"]
+            return [name, "" + (self.$scope().$nesting()) + "[0]"]
           } else {
             return [name, self.$expr(base)]
           };
-        }, $ModuleNode_name_and_base$3.$$arity = 0);
-        return (Opal.def(self, '$compile_body', $ModuleNode_compile_body$4 = function $$compile_body() {
-          var self = this, body_code = nil, $ret_or_1 = nil;
+        }, 0);
+        return $def(self, '$compile_body', function $$compile_body() {
+          var self = this, body_code = nil;
 
           
-          self.$add_temp("$nesting = [self].concat($parent_nesting)");
-          body_code = self.$stmt(self.$compiler().$returns((function() {if ($truthy(($ret_or_1 = self.$body()))) {
-            return $ret_or_1
-          } else {
-            return self.$s("nil")
-          }; return nil; })()));
+          body_code = self.$stmt(self.$compiler().$returns(self.$body()));
           self.$empty_line();
+          if ($truthy(self.define_nesting)) {
+            self.$add_temp("$nesting = [self].concat($parent_nesting)")
+          };
+          if ($truthy(self.define_relative_access)) {
+            self.$add_temp("$$ = Opal.$r($nesting)")
+          };
           self.$line(self.$scope().$to_vars());
           return self.$line(body_code);
-        }, $ModuleNode_compile_body$4.$$arity = 0), nil) && 'compile_body';
-      })($nesting[0], $$($nesting, 'ScopeNode'), $nesting)
+        }, 0);
+      })($nesting[0], $$('ScopeNode'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/class"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy;
+Opal.modules["opal/nodes/class"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $to_ary = Opal.to_ary, $truthy = Opal.truthy, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $rb_plus = Opal.rb_plus, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$name_and_base', '$helper', '$push', '$line', '$in_scope', '$name=', '$scope', '$-', '$compile_body', '$super_code', '$sup', '$expr']);
+  Opal.add_stubs('require,handle,children,name_and_base,helper,nil?,body,stmt?,unshift,super_code,line,in_scope,name=,scope,-,compile_body,await_encountered,await_encountered=,parent,+,nesting,sup,expr');
   
   self.$require("opal/nodes/module");
   return (function($base, $parent_nesting) {
@@ -34740,36 +31759,58 @@ Opal.modules["opal/nodes/class"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'ClassNode');
 
-        var $nesting = [self].concat($parent_nesting), $ClassNode_compile$1, $ClassNode_super_code$3;
+        var $proto = self.$$prototype;
 
+        $proto.define_nesting = nil;
         
         self.$handle("class");
         self.$children("cid", "sup", "body");
         
-        Opal.def(self, '$compile', $ClassNode_compile$1 = function $$compile() {
-          var $a, $b, $$2, self = this, name = nil, base = nil;
+        $def(self, '$compile', function $$compile() {
+          var $a, $b, self = this, name = nil, base = nil, await_begin = nil, await_end = nil, async = nil, $writer = nil;
 
           
-          $b = self.$name_and_base(), $a = Opal.to_ary($b), (name = ($a[0] == null ? nil : $a[0])), (base = ($a[1] == null ? nil : $a[1])), $b;
+          $b = self.$name_and_base(), $a = $to_ary($b), (name = ($a[0] == null ? nil : $a[0])), (base = ($a[1] == null ? nil : $a[1])), $b;
           self.$helper("klass");
-          self.$push("(function($base, $super, $parent_nesting) {");
-          self.$line("" + "  var self = $klass($base, $super, '" + (name) + "');");
-          $send(self, 'in_scope', [], ($$2 = function(){var self = $$2.$$s == null ? this : $$2.$$s, $writer = nil;
-
-            
+          if ($truthy(self.$body()['$nil?']())) {
+            if ($truthy(self['$stmt?']())) {
+              return self.$unshift("$klass(", base, ", ", self.$super_code(), ", '" + (name) + "')")
+            } else {
+              return self.$unshift("($klass(", base, ", ", self.$super_code(), ", '" + (name) + "'), nil)")
+            }
+          } else {
             
-            $writer = [name];
-            $send(self.$scope(), 'name=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];;
-            return self.$compile_body();}, $$2.$$s = self, $$2.$$arity = 0, $$2));
-          return self.$line("})(", base, ", ", self.$super_code(), ", $nesting)");
-        }, $ClassNode_compile$1.$$arity = 0);
-        return (Opal.def(self, '$super_code', $ClassNode_super_code$3 = function $$super_code() {
+            self.$line("  var self = $klass($base, $super, '" + (name) + "');");
+            $send(self, 'in_scope', [], function $$1(){var self = $$1.$$s == null ? this : $$1.$$s, $writer = nil;
+
+              
+              
+              $writer = [name];
+              $send(self.$scope(), 'name=', $to_a($writer));
+              $writer[$rb_minus($writer["length"], 1)];;
+              return self.$compile_body();}, {$$arity: 0, $$s: self});
+            if ($truthy(self.$await_encountered())) {
+              
+              await_begin = "(await ";
+              await_end = ")";
+              async = "async ";
+              
+              $writer = [true];
+              $send(self.$parent(), 'await_encountered=', $to_a($writer));
+              $writer[$rb_minus($writer["length"], 1)];;
+            } else {
+              $a = ["", "", ""], (await_begin = $a[0]), (await_end = $a[1]), (async = $a[2]), $a
+            };
+            self.$unshift("" + (await_begin) + "(" + (async) + "function($base, $super" + (($truthy(self.define_nesting) ? (", $parent_nesting") : nil)) + ") {");
+            return self.$line("})(", base, ", ", self.$super_code(), "" + (($truthy(self.define_nesting) ? ($rb_plus(", ", self.$scope().$nesting())) : nil)) + ")" + (await_end));
+          };
+        }, 0);
+        return $def(self, '$super_code', function $$super_code() {
           var self = this;
 
           if ($truthy(self.$sup())) {
@@ -34777,17 +31818,16 @@ Opal.modules["opal/nodes/class"] = function(Opal) {
           } else {
             return "null"
           }
-        }, $ClassNode_super_code$3.$$arity = 0), nil) && 'super_code';
-      })($nesting[0], $$($nesting, 'ModuleNode'), $nesting)
+        }, 0);
+      })($nesting[0], $$('ModuleNode'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/singleton_class"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send;
+Opal.modules["opal/nodes/singleton_class"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$push', '$in_scope', '$add_temp', '$stmt', '$returns', '$compiler', '$body', '$line', '$to_vars', '$scope', '$recv', '$object']);
+  Opal.add_stubs('require,handle,children,push,in_scope,stmt,returns,compiler,body,add_temp,line,to_vars,scope,recv,object,nesting');
   
   self.$require("opal/nodes/scope");
   return (function($base, $parent_nesting) {
@@ -34798,40 +31838,45 @@ Opal.modules["opal/nodes/singleton_class"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'SingletonClassNode');
 
-        var $nesting = [self].concat($parent_nesting), $SingletonClassNode_compile$1;
-
+        
         
         self.$handle("sclass");
         self.$children("object", "body");
-        return (Opal.def(self, '$compile', $SingletonClassNode_compile$1 = function $$compile() {
-          var $$2, self = this;
+        return $def(self, '$compile', function $$compile() {
+          var self = this;
 
           
           self.$push("(function(self, $parent_nesting) {");
-          $send(self, 'in_scope', [], ($$2 = function(){var self = $$2.$$s == null ? this : $$2.$$s, body_stmt = nil;
+          $send(self, 'in_scope', [], function $$1(){var self = $$1.$$s == null ? this : $$1.$$s, body_stmt = nil;
+            if (self.define_nesting == null) self.define_nesting = nil;
+            if (self.define_relative_access == null) self.define_relative_access = nil;
 
             
-            self.$add_temp("$nesting = [self].concat($parent_nesting)");
             body_stmt = self.$stmt(self.$compiler().$returns(self.$body()));
+            if ($truthy(self.define_nesting)) {
+              self.$add_temp("$nesting = [self].concat($parent_nesting)")
+            };
+            if ($truthy(self.define_relative_access)) {
+              self.$add_temp("$$ = Opal.$r($nesting)")
+            };
             self.$line(self.$scope().$to_vars());
-            return self.$line(body_stmt);}, $$2.$$s = self, $$2.$$arity = 0, $$2));
-          return self.$line("})(Opal.get_singleton_class(", self.$recv(self.$object()), "), $nesting)");
-        }, $SingletonClassNode_compile$1.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'ScopeNode'), $nesting)
+            return self.$line(body_stmt);}, {$$arity: 0, $$s: self});
+          return self.$line("})(Opal.get_singleton_class(", self.$recv(self.$object()), "), " + (self.$scope().$nesting()) + ")");
+        }, 0);
+      })($nesting[0], $$('ScopeNode'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/args/arg"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass;
+Opal.modules["opal/nodes/args/arg"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$add_arg', '$scope', '$name', '$push', '$to_s']);
+  Opal.add_stubs('require,handle,children,add_arg,scope,name,push,to_s');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -34847,46 +31892,32 @@ Opal.modules["opal/nodes/args/arg"] = function(Opal) {
       return (function($base, $parent_nesting) {
         var self = $module($base, 'Args');
 
-        var $nesting = [self].concat($parent_nesting);
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-        return (function($base, $super, $parent_nesting) {
+        return (function($base, $super) {
           var self = $klass($base, $super, 'ArgNode');
 
-          var $nesting = [self].concat($parent_nesting), $ArgNode_compile$1;
-
+          
           
           self.$handle("arg");
           self.$children("name");
-          return (Opal.def(self, '$compile', $ArgNode_compile$1 = function $$compile() {
+          return $def(self, '$compile', function $$compile() {
             var self = this;
 
             
             self.$scope().$add_arg(self.$name());
             return self.$push(self.$name().$to_s());
-          }, $ArgNode_compile$1.$$arity = 0), nil) && 'compile';
-        })($nesting[0], $$($nesting, 'Base'), $nesting)
+          }, 0);
+        })($nesting[0], $$('Base'))
       })($nesting[0], $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/args/arity_check"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $send = Opal.send, $truthy = Opal.truthy;
+Opal.modules["opal/nodes/args/arity_check"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $to_a = Opal.to_a, $def = Opal.def, $send = Opal.send, $rb_minus = Opal.rb_minus, $truthy = Opal.truthy, $not = Opal.not, $rb_lt = Opal.rb_lt, $rb_plus = Opal.rb_plus, $rb_gt = Opal.rb_gt;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$new', '$args_node', '$args', '$optargs', '$restarg', '$postargs', '$kwargs', '$kwoptargs', '$kwrestarg', '$kwnilarg', '$arity', '$arity=', '$scope', '$-', '$arity_check?', '$compiler', '$empty?', '$arity_checks', '$helper', '$inspect', '$to_s', '$mid', '$line', '$push', '$join', '$compact', '$size', '$all_args', '$!', '$-@', '$<', '$+', '$>', '$<<', '$any?', '$has_only_optional_kwargs?', '$negative_arity', '$positive_arity', '$select', '$include?', '$type', '$has_required_kwargs?', '$all?', '$==', '$def?', '$class_scope?', '$top?', '$parent', '$class?', '$name', '$module?', '$identity']);
+  Opal.add_stubs('require,handle,children,new,args_node,args,optargs,restarg,postargs,kwargs,kwoptargs,kwrestarg,kwnilarg,arity,arity=,scope,-,arity_check?,compiler,empty?,arity_checks,helper,inspect,to_s,mid,line,push,join,compact,size,all_args,!,-@,<,+,>,<<,has_only_optional_kwargs?,any?,negative_arity,positive_arity,select,include?,type,has_required_kwargs?,all?,==,def?,class_scope?,top?,parent,class?,name,module?,identity');
   
   self.$require("opal/nodes/base");
   self.$require("opal/rewriters/arguments");
@@ -34898,33 +31929,30 @@ Opal.modules["opal/nodes/args/arity_check"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
       (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'ArityCheckNode');
 
-        var $nesting = [self].concat($parent_nesting), $ArityCheckNode_initialize$1, $ArityCheckNode_compile$2, $ArityCheckNode_kwargs$3, $ArityCheckNode_all_args$4, $ArityCheckNode_arity_checks$5, $ArityCheckNode_arity$6, $ArityCheckNode_negative_arity$7, $ArityCheckNode_positive_arity$9, $ArityCheckNode_has_only_optional_kwargs$ques$10, $ArityCheckNode_has_required_kwargs$ques$12;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.kwargs = self.$$prototype.kwoptargs = self.$$prototype.kwrestarg = self.$$prototype.all_args = self.$$prototype.args = self.$$prototype.optargs = self.$$prototype.restarg = self.$$prototype.postargs = self.$$prototype.arity_checks = nil;
+        $proto.kwargs = $proto.kwoptargs = $proto.kwrestarg = $proto.all_args = $proto.args = $proto.optargs = $proto.restarg = $proto.postargs = $proto.arity_checks = nil;
         
         self.$handle("arity_check");
         self.$children("args_node");
         
-        Opal.def(self, '$initialize', $ArityCheckNode_initialize$1 = function $$initialize($a) {
-          var $post_args, $iter = $ArityCheckNode_initialize$1.$$p, $yield = $iter || nil, self = this, arguments$ = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        $def(self, '$initialize', function $$initialize($a) {
+          var $post_args, $rest_arg, $yield = $$initialize.$$p || nil, self = this, arguments$ = nil;
 
-          if ($iter) $ArityCheckNode_initialize$1.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$initialize.$$p;
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
-          ;
-          $send2(self, $find_super(self, 'initialize', $ArityCheckNode_initialize$1, false, true), 'initialize', $zuper, $iter);
-          arguments$ = $$$($$($nesting, 'Rewriters'), 'Arguments').$new(self.$args_node().$children());
+          $post_args = Opal.slice.call(arguments);
+          
+          $rest_arg = $post_args;;
+          $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', $to_a($rest_arg), $yield);
+          arguments$ = $$$($$('Rewriters'), 'Arguments').$new(self.$args_node().$children());
           self.args = arguments$.$args();
           self.optargs = arguments$.$optargs();
           self.restarg = arguments$.$restarg();
@@ -34933,18 +31961,17 @@ Opal.modules["opal/nodes/args/arity_check"] = function(Opal) {
           self.kwoptargs = arguments$.$kwoptargs();
           self.kwrestarg = arguments$.$kwrestarg();
           return (self.kwnilarg = arguments$.$kwnilarg());
-        }, $ArityCheckNode_initialize$1.$$arity = -1);
+        }, -1);
         
-        Opal.def(self, '$compile', $ArityCheckNode_compile$2 = function $$compile() {
+        $def(self, '$compile', function $$compile() {
           var self = this, $writer = nil, meth = nil;
 
           
           
           $writer = [self.$arity()];
-          $send(self.$scope(), 'arity=', Opal.to_a($writer));
+          $send(self.$scope(), 'arity=', $to_a($writer));
           $writer[$rb_minus($writer["length"], 1)];;
-          if ($truthy(self.$compiler()['$arity_check?']())) {
-          } else {
+          if (!$truthy(self.$compiler()['$arity_check?']())) {
             return nil
           };
           if ($truthy(self.$arity_checks()['$empty?']())) {
@@ -34954,158 +31981,132 @@ Opal.modules["opal/nodes/args/arity_check"] = function(Opal) {
             self.$helper("ac");
             meth = self.$scope().$mid().$to_s().$inspect();
             self.$line("var $arity = arguments.length;");
-            return self.$push("" + " if (" + (self.$arity_checks().$join(" || ")) + ") { $ac($arity, " + (self.$arity()) + ", this, " + (meth) + "); }");
+            return self.$push(" if (" + (self.$arity_checks().$join(" || ")) + ") { $ac($arity, " + (self.$arity()) + ", this, " + (meth) + "); }");
           };
-        }, $ArityCheckNode_compile$2.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$kwargs', $ArityCheckNode_kwargs$3 = function $$kwargs() {
+        $def(self, '$kwargs', function $$kwargs() {
           var self = this;
 
-          return [].concat(Opal.to_a(self.kwargs)).concat(Opal.to_a(self.kwoptargs)).concat([self.kwrestarg]).$compact()
-        }, $ArityCheckNode_kwargs$3.$$arity = 0);
+          return [].concat($to_a(self.kwargs)).concat($to_a(self.kwoptargs)).concat([self.kwrestarg]).$compact()
+        }, 0);
         
-        Opal.def(self, '$all_args', $ArityCheckNode_all_args$4 = function $$all_args() {
+        $def(self, '$all_args', function $$all_args() {
           var self = this, $ret_or_1 = nil;
 
-          return (self.all_args = (function() {if ($truthy(($ret_or_1 = self.all_args))) {
-            return $ret_or_1
-          } else {
-            return [].concat(Opal.to_a(self.args)).concat(Opal.to_a(self.optargs)).concat([self.restarg]).concat(Opal.to_a(self.postargs)).concat(Opal.to_a(self.$kwargs())).$compact()
-          }; return nil; })())
-        }, $ArityCheckNode_all_args$4.$$arity = 0);
+          return (self.all_args = ($truthy(($ret_or_1 = self.all_args)) ? ($ret_or_1) : ([].concat($to_a(self.args)).concat($to_a(self.optargs)).concat([self.restarg]).concat($to_a(self.postargs)).concat($to_a(self.$kwargs())).$compact())))
+        }, 0);
         
-        Opal.def(self, '$arity_checks', $ArityCheckNode_arity_checks$5 = function $$arity_checks() {
-          var $a, self = this, arity = nil, $ret_or_2 = nil, $ret_or_3 = nil, min_arity = nil, max_arity = nil;
+        $def(self, '$arity_checks', function $$arity_checks() {
+          var $a, self = this, arity = nil, min_arity = nil, max_arity = nil;
 
           
           if ($truthy((($a = self['arity_checks'], $a != null && $a !== nil) ? 'instance-variable' : nil))) {
-            return self.arity_checks};
+            return self.arity_checks
+          };
           arity = self.$all_args().$size();
           arity = $rb_minus(arity, self.optargs.$size());
           if ($truthy(self.restarg)) {
-            arity = $rb_minus(arity, 1)};
+            arity = $rb_minus(arity, 1)
+          };
           arity = $rb_minus(arity, self.$kwargs().$size());
-          if ($truthy((function() {if ($truthy(($ret_or_2 = (function() {if ($truthy(($ret_or_3 = self.optargs['$empty?']()['$!']()))) {
-            return $ret_or_3
-          } else {
-            return self.$kwargs()['$empty?']()['$!']()
-          }; return nil; })()))) {
-            return $ret_or_2
-          } else {
-            return self.restarg
-          }; return nil; })())) {
-            arity = $rb_minus(arity['$-@'](), 1)};
+          if ((($not(self.optargs['$empty?']()) || ($not(self.$kwargs()['$empty?']()))) || ($truthy(self.restarg)))) {
+            arity = $rb_minus(arity['$-@'](), 1)
+          };
           self.arity_checks = [];
           if ($truthy($rb_lt(arity, 0))) {
             
             min_arity = $rb_plus(arity, 1)['$-@']();
             max_arity = self.$all_args().$size();
             if ($truthy($rb_gt(min_arity, 0))) {
-              self.arity_checks['$<<']("" + "$arity < " + (min_arity))};
-            if ($truthy(self.restarg)) {
-            } else {
-              self.arity_checks['$<<']("" + "$arity > " + (max_arity))
+              self.arity_checks['$<<']("$arity < " + (min_arity))
+            };
+            if (!$truthy(self.restarg)) {
+              self.arity_checks['$<<']("$arity > " + (max_arity))
             };
           } else {
-            self.arity_checks['$<<']("" + "$arity !== " + (arity))
+            self.arity_checks['$<<']("$arity !== " + (arity))
           };
           return self.arity_checks;
-        }, $ArityCheckNode_arity_checks$5.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$arity', $ArityCheckNode_arity$6 = function $$arity() {
-          var self = this, $ret_or_4 = nil, $ret_or_5 = nil;
+        $def(self, '$arity', function $$arity() {
+          var self = this;
 
-          if ($truthy((function() {if ($truthy(($ret_or_4 = (function() {if ($truthy(($ret_or_5 = self.restarg))) {
-            return $ret_or_5
-          } else {
-            return self.optargs['$any?']()
-          }; return nil; })()))) {
-            return $ret_or_4
-          } else {
-            return self['$has_only_optional_kwargs?']()
-          }; return nil; })())) {
+          if ((($truthy(self.restarg) || ($truthy(self.optargs['$any?']()))) || ($truthy(self['$has_only_optional_kwargs?']())))) {
             return self.$negative_arity()
           } else {
             return self.$positive_arity()
           }
-        }, $ArityCheckNode_arity$6.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$negative_arity', $ArityCheckNode_negative_arity$7 = function $$negative_arity() {
-          var $$8, self = this, required_plain_args = nil, result = nil;
+        $def(self, '$negative_arity', function $$negative_arity() {
+          var self = this, required_plain_args = nil, result = nil;
 
           
-          required_plain_args = $send(self.$all_args(), 'select', [], ($$8 = function(arg){var self = $$8.$$s == null ? this : $$8.$$s;
-
+          required_plain_args = $send(self.$all_args(), 'select', [], function $$1(arg){
             
             
-            if (arg == null) {
-              arg = nil;
-            };
-            return ["arg", "mlhs"]['$include?'](arg.$type());}, $$8.$$s = self, $$8.$$arity = 1, $$8));
+            if (arg == null) arg = nil;;
+            return ["arg", "mlhs"]['$include?'](arg.$type());}, 1);
           result = required_plain_args.$size();
           if ($truthy(self['$has_required_kwargs?']())) {
-            result = $rb_plus(result, 1)};
+            result = $rb_plus(result, 1)
+          };
           result = $rb_minus(result['$-@'](), 1);
           return result;
-        }, $ArityCheckNode_negative_arity$7.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$positive_arity', $ArityCheckNode_positive_arity$9 = function $$positive_arity() {
+        $def(self, '$positive_arity', function $$positive_arity() {
           var self = this, result = nil;
 
           
           result = self.$all_args().$size();
           result = $rb_minus(result, self.$kwargs().$size());
           if ($truthy(self.$kwargs()['$any?']())) {
-            result = $rb_plus(result, 1)};
+            result = $rb_plus(result, 1)
+          };
           return result;
-        }, $ArityCheckNode_positive_arity$9.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$has_only_optional_kwargs?', $ArityCheckNode_has_only_optional_kwargs$ques$10 = function() {
-          var $$11, self = this, $ret_or_6 = nil;
-
-          if ($truthy(($ret_or_6 = self.$kwargs()['$any?']()))) {
-            return $send(self.$kwargs(), 'all?', [], ($$11 = function(arg){var self = $$11.$$s == null ? this : $$11.$$s;
+        $def(self, '$has_only_optional_kwargs?', function $ArityCheckNode_has_only_optional_kwargs$ques$2() {
+          var self = this, $ret_or_1 = nil;
 
+          if ($truthy(($ret_or_1 = self.$kwargs()['$any?']()))) {
+            return $send(self.$kwargs(), 'all?', [], function $$3(arg){
               
               
-              if (arg == null) {
-                arg = nil;
-              };
-              return ["kwoptarg", "kwrestarg"]['$include?'](arg.$type());}, $$11.$$s = self, $$11.$$arity = 1, $$11))
+              if (arg == null) arg = nil;;
+              return ["kwoptarg", "kwrestarg"]['$include?'](arg.$type());}, 1)
           } else {
-            return $ret_or_6
+            return $ret_or_1
           }
-        }, $ArityCheckNode_has_only_optional_kwargs$ques$10.$$arity = 0);
-        return (Opal.def(self, '$has_required_kwargs?', $ArityCheckNode_has_required_kwargs$ques$12 = function() {
-          var $$13, self = this;
-
-          return $send(self.$kwargs(), 'any?', [], ($$13 = function(arg){var self = $$13.$$s == null ? this : $$13.$$s;
+        }, 0);
+        return $def(self, '$has_required_kwargs?', function $ArityCheckNode_has_required_kwargs$ques$4() {
+          var self = this;
 
+          return $send(self.$kwargs(), 'any?', [], function $$5(arg){
             
             
-            if (arg == null) {
-              arg = nil;
-            };
-            return arg.$type()['$==']("kwarg");}, $$13.$$s = self, $$13.$$arity = 1, $$13))
-        }, $ArityCheckNode_has_required_kwargs$ques$12.$$arity = 0), nil) && 'has_required_kwargs?';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      return (function($base, $super, $parent_nesting) {
+            if (arg == null) arg = nil;;
+            return arg.$type()['$==']("kwarg");}, 1)
+        }, 0);
+      })($nesting[0], $$('Base'), $nesting);
+      return (function($base, $super) {
         var self = $klass($base, $super, 'IterArityCheckNode');
 
-        var $nesting = [self].concat($parent_nesting), $IterArityCheckNode_compile$14;
-
+        
         
         self.$handle("iter_arity_check");
-        return (Opal.def(self, '$compile', $IterArityCheckNode_compile$14 = function $$compile() {
-          var $a, self = this, $writer = nil, parent_scope = nil, $ret_or_7 = nil, $ret_or_8 = nil, context = nil, identity = nil;
+        return $def(self, '$compile', function $$compile() {
+          var $a, self = this, $writer = nil, parent_scope = nil, $ret_or_1 = nil, $ret_or_2 = nil, context = nil, identity = nil;
 
           
           
           $writer = [self.$arity()];
-          $send(self.$scope(), 'arity=', Opal.to_a($writer));
+          $send(self.$scope(), 'arity=', $to_a($writer));
           $writer[$rb_minus($writer["length"], 1)];;
-          if ($truthy(self.$compiler()['$arity_check?']())) {
-          } else {
+          if (!$truthy(self.$compiler()['$arity_check?']())) {
             return nil
           };
           if ($truthy(self.$arity_checks()['$empty?']())) {
@@ -35113,45 +32114,26 @@ Opal.modules["opal/nodes/args/arity_check"] = function(Opal) {
           } else {
             
             parent_scope = self.$scope();
-            while (!($truthy((function() {if ($truthy(($ret_or_7 = (function() {if ($truthy(($ret_or_8 = parent_scope['$def?']()))) {
-              return $ret_or_8
-            } else {
-              return parent_scope['$class_scope?']()
-            }; return nil; })()))) {
-              return $ret_or_7
-            } else {
-              return parent_scope['$top?']()
-            }; return nil; })()))) {
+            while (!($truthy(($truthy(($ret_or_1 = ($truthy(($ret_or_2 = parent_scope['$def?']())) ? ($ret_or_2) : (parent_scope['$class_scope?']())))) ? ($ret_or_1) : (parent_scope['$top?']()))))) {
               parent_scope = parent_scope.$parent()
             };
-            context = (function() {if ($truthy(parent_scope['$top?']())) {
-              return "'<main>'"
-            } else if ($truthy(parent_scope['$def?']())) {
-              return "" + "'" + (parent_scope.$mid()) + "'"
-            } else if ($truthy(parent_scope['$class?']())) {
-              return "" + "'<class:" + (parent_scope.$name()) + ">'"
-            } else if ($truthy(parent_scope['$module?']())) {
-              return "" + "'<module:" + (parent_scope.$name()) + ">'"
-            } else {
-              return nil
-            }; return nil; })();
+            context = ($truthy(parent_scope['$top?']()) ? ("'<main>'") : ($truthy(parent_scope['$def?']()) ? ("'" + (parent_scope.$mid()) + "'") : ($truthy(parent_scope['$class?']()) ? ("'<class:" + (parent_scope.$name()) + ">'") : ($truthy(parent_scope['$module?']()) ? ("'<module:" + (parent_scope.$name()) + ">'") : nil))));
             identity = self.$scope().$identity();
-            self.$line("" + "if (" + (identity) + ".$$is_lambda || " + (identity) + ".$$define_meth) {");
+            self.$line("if (" + (identity) + ".$$is_lambda || " + (identity) + ".$$define_meth) {");
             self.$line("  var $arity = arguments.length;");
-            self.$line("" + "  if (" + (self.$arity_checks().$join(" || ")) + ") { Opal.block_ac($arity, " + (self.$arity()) + ", " + (context) + "); }");
+            self.$line("  if (" + (self.$arity_checks().$join(" || ")) + ") { Opal.block_ac($arity, " + (self.$arity()) + ", " + (context) + "); }");
             return self.$line("}");
           };
-        }, $IterArityCheckNode_compile$14.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'ArityCheckNode'), $nesting);
+        }, 0);
+      })($nesting[0], $$('ArityCheckNode'));
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/args/ensure_kwargs_are_kwargs"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass;
+Opal.modules["opal/nodes/args/ensure_kwargs_are_kwargs"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$helper', '$line']);
+  Opal.add_stubs('require,handle,helper,line');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -35167,16 +32149,15 @@ Opal.modules["opal/nodes/args/ensure_kwargs_are_kwargs"] = function(Opal) {
       return (function($base, $parent_nesting) {
         var self = $module($base, 'Args');
 
-        var $nesting = [self].concat($parent_nesting);
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-        return (function($base, $super, $parent_nesting) {
+        return (function($base, $super) {
           var self = $klass($base, $super, 'EnsureKwargsAreKwargs');
 
-          var $nesting = [self].concat($parent_nesting), $EnsureKwargsAreKwargs_compile$1;
-
+          
           
           self.$handle("ensure_kwargs_are_kwargs");
-          return (Opal.def(self, '$compile', $EnsureKwargsAreKwargs_compile$1 = function $$compile() {
+          return $def(self, '$compile', function $$compile() {
             var self = this;
 
             
@@ -35186,21 +32167,17 @@ Opal.modules["opal/nodes/args/ensure_kwargs_are_kwargs"] = function(Opal) {
             self.$line("} else if (!$kwargs.$$is_hash) {");
             self.$line("  throw Opal.ArgumentError.$new('expected kwargs');");
             return self.$line("}");
-          }, $EnsureKwargsAreKwargs_compile$1.$$arity = 0), nil) && 'compile';
-        })($nesting[0], $$($nesting, 'Base'), $nesting)
+          }, 0);
+        })($nesting[0], $$('Base'))
       })($nesting[0], $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/args/extract_block_arg"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send;
+Opal.modules["opal/nodes/args/extract_block_arg"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$uses_block!', '$scope', '$add_arg', '$name', '$block_name=', '$-', '$identity', '$block_name', '$add_temp', '$line']);
+  Opal.add_stubs('require,handle,children,uses_block!,scope,add_arg,name,prepare_block');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -35216,43 +32193,33 @@ Opal.modules["opal/nodes/args/extract_block_arg"] = function(Opal) {
       return (function($base, $parent_nesting) {
         var self = $module($base, 'Args');
 
-        var $nesting = [self].concat($parent_nesting);
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-        return (function($base, $super, $parent_nesting) {
+        return (function($base, $super) {
           var self = $klass($base, $super, 'ExtractBlockarg');
 
-          var $nesting = [self].concat($parent_nesting), $ExtractBlockarg_compile$1;
-
+          
           
           self.$handle("extract_blockarg");
           self.$children("name");
-          return (Opal.def(self, '$compile', $ExtractBlockarg_compile$1 = function $$compile() {
-            var self = this, $writer = nil, scope_name = nil, yielder = nil;
+          return $def(self, '$compile', function $$compile() {
+            var self = this;
 
             
             self.$scope()['$uses_block!']();
             self.$scope().$add_arg(self.$name());
-            
-            $writer = [self.$name()];
-            $send(self.$scope(), 'block_name=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];;
-            scope_name = self.$scope().$identity();
-            yielder = self.$scope().$block_name();
-            self.$add_temp("" + "$iter = " + (scope_name) + ".$$p");
-            self.$add_temp("" + (yielder) + " = $iter || nil");
-            return self.$line("" + "if ($iter) " + (scope_name) + ".$$p = null;");
-          }, $ExtractBlockarg_compile$1.$$arity = 0), nil) && 'compile';
-        })($nesting[0], $$($nesting, 'Base'), $nesting)
+            return self.$scope().$prepare_block(self.$name());
+          }, 0);
+        })($nesting[0], $$('Base'))
       })($nesting[0], $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/args/extract_kwarg"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass;
+Opal.modules["opal/nodes/args/extract_kwarg"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$[]', '$meta', '$<<', '$used_kwargs', '$scope', '$add_temp', '$lvar_name', '$line', '$inspect', '$to_s']);
+  Opal.add_stubs('require,handle,children,[],meta,<<,used_kwargs,scope,add_temp,lvar_name,line,inspect,to_s');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -35268,40 +32235,39 @@ Opal.modules["opal/nodes/args/extract_kwarg"] = function(Opal) {
       return (function($base, $parent_nesting) {
         var self = $module($base, 'Args');
 
-        var $nesting = [self].concat($parent_nesting);
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-        return (function($base, $super, $parent_nesting) {
+        return (function($base, $super) {
           var self = $klass($base, $super, 'ExtractKwarg');
 
-          var $nesting = [self].concat($parent_nesting), $ExtractKwarg_compile$1;
+          var $proto = self.$$prototype;
 
-          self.$$prototype.sexp = nil;
+          $proto.sexp = nil;
           
           self.$handle("extract_kwarg");
           self.$children("lvar_name");
-          return (Opal.def(self, '$compile', $ExtractKwarg_compile$1 = function $$compile() {
+          return $def(self, '$compile', function $$compile() {
             var self = this, key_name = nil;
 
             
             key_name = self.sexp.$meta()['$[]']("arg_name");
             self.$scope().$used_kwargs()['$<<'](key_name);
             self.$add_temp(self.$lvar_name());
-            self.$line("" + "if (!Opal.hasOwnProperty.call($kwargs.$$smap, '" + (key_name) + "')) {");
-            self.$line("" + "  throw Opal.ArgumentError.$new('missing keyword: " + (key_name) + "');");
+            self.$line("if (!Opal.hasOwnProperty.call($kwargs.$$smap, '" + (key_name) + "')) {");
+            self.$line("  throw Opal.ArgumentError.$new('missing keyword: " + (key_name) + "');");
             self.$line("}");
             return self.$line("" + (self.$lvar_name()) + " = $kwargs.$$smap[" + (key_name.$to_s().$inspect()) + "];");
-          }, $ExtractKwarg_compile$1.$$arity = 0), nil) && 'compile';
-        })($nesting[0], $$($nesting, 'Base'), $nesting)
+          }, 0);
+        })($nesting[0], $$('Base'))
       })($nesting[0], $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/args/extract_kwargs"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass;
+Opal.modules["opal/nodes/args/extract_kwargs"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$add_temp', '$line']);
+  Opal.add_stubs('require,handle,add_temp,line');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -35317,33 +32283,31 @@ Opal.modules["opal/nodes/args/extract_kwargs"] = function(Opal) {
       return (function($base, $parent_nesting) {
         var self = $module($base, 'Args');
 
-        var $nesting = [self].concat($parent_nesting);
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-        return (function($base, $super, $parent_nesting) {
+        return (function($base, $super) {
           var self = $klass($base, $super, 'ExtractKwargs');
 
-          var $nesting = [self].concat($parent_nesting), $ExtractKwargs_compile$1;
-
+          
           
           self.$handle("extract_kwargs");
-          return (Opal.def(self, '$compile', $ExtractKwargs_compile$1 = function $$compile() {
+          return $def(self, '$compile', function $$compile() {
             var self = this;
 
             
             self.$add_temp("$kwargs");
             return self.$line("$kwargs = Opal.extract_kwargs($post_args)");
-          }, $ExtractKwargs_compile$1.$$arity = 0), nil) && 'compile';
-        })($nesting[0], $$($nesting, 'Base'), $nesting)
+          }, 0);
+        })($nesting[0], $$('Base'))
       })($nesting[0], $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/args/extract_kwoptarg"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass;
+Opal.modules["opal/nodes/args/extract_kwoptarg"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $eqeq = Opal.eqeq, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$[]', '$meta', '$<<', '$used_kwargs', '$scope', '$add_temp', '$lvar_name', '$line', '$inspect', '$to_s', '$==', '$default_value', '$expr']);
+  Opal.add_stubs('require,handle,children,[],meta,<<,used_kwargs,scope,add_temp,lvar_name,line,inspect,to_s,==,default_value,expr');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -35359,18 +32323,18 @@ Opal.modules["opal/nodes/args/extract_kwoptarg"] = function(Opal) {
       return (function($base, $parent_nesting) {
         var self = $module($base, 'Args');
 
-        var $nesting = [self].concat($parent_nesting);
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-        return (function($base, $super, $parent_nesting) {
+        return (function($base, $super) {
           var self = $klass($base, $super, 'ExtractKwoptarg');
 
-          var $nesting = [self].concat($parent_nesting), $ExtractKwoptarg_compile$1;
+          var $proto = self.$$prototype;
 
-          self.$$prototype.sexp = nil;
+          $proto.sexp = nil;
           
           self.$handle("extract_kwoptarg");
           self.$children("lvar_name", "default_value");
-          return (Opal.def(self, '$compile', $ExtractKwoptarg_compile$1 = function $$compile() {
+          return $def(self, '$compile', function $$compile() {
             var self = this, key_name = nil;
 
             
@@ -35378,23 +32342,21 @@ Opal.modules["opal/nodes/args/extract_kwoptarg"] = function(Opal) {
             self.$scope().$used_kwargs()['$<<'](key_name);
             self.$add_temp(self.$lvar_name());
             self.$line("" + (self.$lvar_name()) + " = $kwargs.$$smap[" + (key_name.$to_s().$inspect()) + "];");
-            if (self.$default_value().$children()['$[]'](1)['$==']("undefined")) {
-              return nil};
-            self.$line("" + "if (" + (self.$lvar_name()) + " == null) {");
-            self.$line("" + "  " + (self.$lvar_name()) + " = ", self.$expr(self.$default_value()));
-            return self.$line("}");
-          }, $ExtractKwoptarg_compile$1.$$arity = 0), nil) && 'compile';
-        })($nesting[0], $$($nesting, 'Base'), $nesting)
+            if ($eqeq(self.$default_value().$children()['$[]'](1), "undefined")) {
+              return nil
+            };
+            return self.$line("if (" + (self.$lvar_name()) + " == null) " + (self.$lvar_name()) + " = ", self.$expr(self.$default_value()));
+          }, 0);
+        })($nesting[0], $$('Base'))
       })($nesting[0], $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/args/extract_kwrestarg"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send;
+Opal.modules["opal/nodes/args/extract_kwrestarg"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $def = Opal.def, $send = Opal.send;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$name', '$add_temp', '$line', '$used_kwargs', '$map', '$scope', '$join']);
+  Opal.add_stubs('require,handle,children,name,add_temp,line,used_kwargs,map,scope,join');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -35410,53 +32372,45 @@ Opal.modules["opal/nodes/args/extract_kwrestarg"] = function(Opal) {
       return (function($base, $parent_nesting) {
         var self = $module($base, 'Args');
 
-        var $nesting = [self].concat($parent_nesting);
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-        return (function($base, $super, $parent_nesting) {
+        return (function($base, $super) {
           var self = $klass($base, $super, 'ExtractKwrestarg');
 
-          var $nesting = [self].concat($parent_nesting), $ExtractKwrestarg_compile$1, $ExtractKwrestarg_used_kwargs$2;
-
+          
           
           self.$handle("extract_kwrestarg");
           self.$children("name");
           
-          Opal.def(self, '$compile', $ExtractKwrestarg_compile$1 = function $$compile() {
-            var self = this;
-
-            if ($truthy(self.$name())) {
-              
-              self.$add_temp(self.$name());
-              return self.$line("" + (self.$name()) + " = Opal.kwrestargs($kwargs, " + (self.$used_kwargs()) + ");");
-            } else {
-              return nil
-            }
-          }, $ExtractKwrestarg_compile$1.$$arity = 0);
-          return (Opal.def(self, '$used_kwargs', $ExtractKwrestarg_used_kwargs$2 = function $$used_kwargs() {
-            var $$3, self = this, args = nil;
+          $def(self, '$compile', function $$compile() {
+            var self = this, name = nil, $ret_or_1 = nil;
 
             
-            args = $send(self.$scope().$used_kwargs(), 'map', [], ($$3 = function(arg_name){var self = $$3.$$s == null ? this : $$3.$$s;
+            name = ($truthy(($ret_or_1 = self.$name())) ? ($ret_or_1) : ("$kw_rest_arg"));
+            self.$add_temp(name);
+            return self.$line("" + (name) + " = Opal.kwrestargs($kwargs, " + (self.$used_kwargs()) + ");");
+          }, 0);
+          return $def(self, '$used_kwargs', function $$used_kwargs() {
+            var self = this, args = nil;
 
+            
+            args = $send(self.$scope().$used_kwargs(), 'map', [], function $$1(arg_name){
               
               
-              if (arg_name == null) {
-                arg_name = nil;
-              };
-              return "" + "'" + (arg_name) + "': true";}, $$3.$$s = self, $$3.$$arity = 1, $$3));
-            return "" + "{" + (args.$join(",")) + "}";
-          }, $ExtractKwrestarg_used_kwargs$2.$$arity = 0), nil) && 'used_kwargs';
-        })($nesting[0], $$($nesting, 'Base'), $nesting)
+              if (arg_name == null) arg_name = nil;;
+              return "'" + (arg_name) + "': true";}, 1);
+            return "{" + (args.$join(",")) + "}";
+          }, 0);
+        })($nesting[0], $$('Base'))
       })($nesting[0], $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/args/extract_optarg"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass;
+Opal.modules["opal/nodes/args/extract_optarg"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $eqeq = Opal.eqeq, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$==', '$[]', '$default_value', '$line', '$name', '$expr']);
+  Opal.add_stubs('require,handle,children,==,[],default_value,line,name,expr');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -35472,37 +32426,34 @@ Opal.modules["opal/nodes/args/extract_optarg"] = function(Opal) {
       return (function($base, $parent_nesting) {
         var self = $module($base, 'Args');
 
-        var $nesting = [self].concat($parent_nesting);
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-        return (function($base, $super, $parent_nesting) {
+        return (function($base, $super) {
           var self = $klass($base, $super, 'ExtractOptargNode');
 
-          var $nesting = [self].concat($parent_nesting), $ExtractOptargNode_compile$1;
-
+          
           
           self.$handle("extract_optarg");
           self.$children("name", "default_value");
-          return (Opal.def(self, '$compile', $ExtractOptargNode_compile$1 = function $$compile() {
+          return $def(self, '$compile', function $$compile() {
             var self = this;
 
             
-            if (self.$default_value().$children()['$[]'](1)['$==']("undefined")) {
-              return nil};
-            self.$line("" + "if (" + (self.$name()) + " == null) {");
-            self.$line("" + "  " + (self.$name()) + " = ", self.$expr(self.$default_value()), ";");
-            return self.$line("}");
-          }, $ExtractOptargNode_compile$1.$$arity = 0), nil) && 'compile';
-        })($nesting[0], $$($nesting, 'Base'), $nesting)
+            if ($eqeq(self.$default_value().$children()['$[]'](1), "undefined")) {
+              return nil
+            };
+            return self.$line("if (" + (self.$name()) + " == null) " + (self.$name()) + " = ", self.$expr(self.$default_value()), ";");
+          }, 0);
+        })($nesting[0], $$('Base'))
       })($nesting[0], $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/args/extract_post_arg"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass;
+Opal.modules["opal/nodes/args/extract_post_arg"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$add_temp', '$name', '$line']);
+  Opal.add_stubs('require,handle,children,add_temp,name,line');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -35518,38 +32469,33 @@ Opal.modules["opal/nodes/args/extract_post_arg"] = function(Opal) {
       return (function($base, $parent_nesting) {
         var self = $module($base, 'Args');
 
-        var $nesting = [self].concat($parent_nesting);
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-        return (function($base, $super, $parent_nesting) {
+        return (function($base, $super) {
           var self = $klass($base, $super, 'ExtractPostArg');
 
-          var $nesting = [self].concat($parent_nesting), $ExtractPostArg_compile$1;
-
+          
           
           self.$handle("extract_post_arg");
           self.$children("name");
-          return (Opal.def(self, '$compile', $ExtractPostArg_compile$1 = function $$compile() {
+          return $def(self, '$compile', function $$compile() {
             var self = this;
 
             
             self.$add_temp(self.$name());
-            self.$line("" + (self.$name()) + " = $post_args[0];");
-            self.$line("$post_args.splice(0, 1);");
-            self.$line("" + "if (" + (self.$name()) + " == null) {");
-            self.$line("" + "  " + (self.$name()) + " = nil");
-            return self.$line("}");
-          }, $ExtractPostArg_compile$1.$$arity = 0), nil) && 'compile';
-        })($nesting[0], $$($nesting, 'Base'), $nesting)
+            self.$line("" + (self.$name()) + " = $post_args.shift();");
+            return self.$line("if (" + (self.$name()) + " == null) " + (self.$name()) + " = nil;");
+          }, 0);
+        })($nesting[0], $$('Base'))
       })($nesting[0], $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/args/extract_post_optarg"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass;
+Opal.modules["opal/nodes/args/extract_post_optarg"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $eqeq = Opal.eqeq, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$add_temp', '$name', '$line', '$args_to_keep', '$==', '$[]', '$default_value', '$expr']);
+  Opal.add_stubs('require,handle,children,add_temp,name,line,args_to_keep,==,[],default_value,expr');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -35565,42 +32511,36 @@ Opal.modules["opal/nodes/args/extract_post_optarg"] = function(Opal) {
       return (function($base, $parent_nesting) {
         var self = $module($base, 'Args');
 
-        var $nesting = [self].concat($parent_nesting);
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-        return (function($base, $super, $parent_nesting) {
+        return (function($base, $super) {
           var self = $klass($base, $super, 'ExtractPostOptarg');
 
-          var $nesting = [self].concat($parent_nesting), $ExtractPostOptarg_compile$1;
-
+          
           
           self.$handle("extract_post_optarg");
           self.$children("name", "default_value", "args_to_keep");
-          return (Opal.def(self, '$compile', $ExtractPostOptarg_compile$1 = function $$compile() {
+          return $def(self, '$compile', function $$compile() {
             var self = this;
 
             
             self.$add_temp(self.$name());
-            self.$line("" + "if ($post_args.length > " + (self.$args_to_keep()) + ") {");
-            self.$line("" + "  " + (self.$name()) + " = $post_args[0];");
-            self.$line("  $post_args.splice(0, 1);");
-            self.$line("}");
-            if (self.$default_value().$children()['$[]'](1)['$==']("undefined")) {
-              return nil};
-            self.$line("" + "if (" + (self.$name()) + " == null) {");
-            self.$line("" + "  " + (self.$name()) + " = ", self.$expr(self.$default_value()), ";");
-            return self.$line("}");
-          }, $ExtractPostOptarg_compile$1.$$arity = 0), nil) && 'compile';
-        })($nesting[0], $$($nesting, 'Base'), $nesting)
+            self.$line("if ($post_args.length > " + (self.$args_to_keep()) + ") " + (self.$name()) + " = $post_args.shift();");
+            if ($eqeq(self.$default_value().$children()['$[]'](1), "undefined")) {
+              return nil
+            };
+            return self.$line("if (" + (self.$name()) + " == null) " + (self.$name()) + " = ", self.$expr(self.$default_value()), ";");
+          }, 0);
+        })($nesting[0], $$('Base'))
       })($nesting[0], $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/args/extract_restarg"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy;
+Opal.modules["opal/nodes/args/extract_restarg"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $eqeq = Opal.eqeq, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$name', '$add_temp', '$==', '$args_to_keep', '$line', '$!=']);
+  Opal.add_stubs('require,handle,children,name,add_temp,==,args_to_keep,line');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -35616,44 +32556,37 @@ Opal.modules["opal/nodes/args/extract_restarg"] = function(Opal) {
       return (function($base, $parent_nesting) {
         var self = $module($base, 'Args');
 
-        var $nesting = [self].concat($parent_nesting);
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-        return (function($base, $super, $parent_nesting) {
+        return (function($base, $super) {
           var self = $klass($base, $super, 'ExtractRestarg');
 
-          var $nesting = [self].concat($parent_nesting), $ExtractRestarg_compile$1;
-
+          
           
           self.$handle("extract_restarg");
           self.$children("name", "args_to_keep");
-          return (Opal.def(self, '$compile', $ExtractRestarg_compile$1 = function $$compile() {
-            var self = this;
+          return $def(self, '$compile', function $$compile() {
+            var self = this, name = nil, $ret_or_1 = nil;
 
-            if ($truthy(self.$name())) {
-              
-              self.$add_temp(self.$name());
-              if (self.$args_to_keep()['$=='](0)) {
-                return self.$line("" + (self.$name()) + " = $post_args;")
-              } else {
-                return self.$line("" + (self.$name()) + " = $post_args.splice(0, $post_args.length - " + (self.$args_to_keep()) + ");")
-              };
-            } else if ($truthy(self.$args_to_keep()['$!='](0))) {
-              return self.$line("" + "$post_args.splice(0, $post_args.length - " + (self.$args_to_keep()) + ");")
+            
+            name = ($truthy(($ret_or_1 = self.$name())) ? ($ret_or_1) : ("$rest_arg"));
+            self.$add_temp(name);
+            if ($eqeq(self.$args_to_keep(), 0)) {
+              return self.$line("" + (name) + " = $post_args;")
             } else {
-              return nil
-            }
-          }, $ExtractRestarg_compile$1.$$arity = 0), nil) && 'compile';
-        })($nesting[0], $$($nesting, 'Base'), $nesting)
+              return self.$line("" + (name) + " = $post_args.splice(0, $post_args.length - " + (self.$args_to_keep()) + ");")
+            };
+          }, 0);
+        })($nesting[0], $$('Base'))
       })($nesting[0], $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/args/fake_arg"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass;
+Opal.modules["opal/nodes/args/fake_arg"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$next_temp', '$scope', '$add_arg', '$push']);
+  Opal.add_stubs('require,handle,next_temp,scope,add_arg,push');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -35669,34 +32602,32 @@ Opal.modules["opal/nodes/args/fake_arg"] = function(Opal) {
       return (function($base, $parent_nesting) {
         var self = $module($base, 'Args');
 
-        var $nesting = [self].concat($parent_nesting);
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-        return (function($base, $super, $parent_nesting) {
+        return (function($base, $super) {
           var self = $klass($base, $super, 'FakeArgNode');
 
-          var $nesting = [self].concat($parent_nesting), $FakeArgNode_compile$1;
-
+          
           
           self.$handle("fake_arg");
-          return (Opal.def(self, '$compile', $FakeArgNode_compile$1 = function $$compile() {
+          return $def(self, '$compile', function $$compile() {
             var self = this, name = nil;
 
             
             name = self.$scope().$next_temp();
             self.$scope().$add_arg(name);
             return self.$push(name);
-          }, $FakeArgNode_compile$1.$$arity = 0), nil) && 'compile';
-        })($nesting[0], $$($nesting, 'Base'), $nesting)
+          }, 0);
+        })($nesting[0], $$('Base'))
       })($nesting[0], $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/args/initialize_iterarg"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass;
+Opal.modules["opal/nodes/args/initialize_iterarg"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$line', '$name']);
+  Opal.add_stubs('require,handle,children,line,name');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -35712,35 +32643,30 @@ Opal.modules["opal/nodes/args/initialize_iterarg"] = function(Opal) {
       return (function($base, $parent_nesting) {
         var self = $module($base, 'Args');
 
-        var $nesting = [self].concat($parent_nesting);
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-        return (function($base, $super, $parent_nesting) {
+        return (function($base, $super) {
           var self = $klass($base, $super, 'InitializeIterarg');
 
-          var $nesting = [self].concat($parent_nesting), $InitializeIterarg_compile$1;
-
+          
           
           self.$handle("initialize_iter_arg");
           self.$children("name");
-          return (Opal.def(self, '$compile', $InitializeIterarg_compile$1 = function $$compile() {
+          return $def(self, '$compile', function $$compile() {
             var self = this;
 
-            
-            self.$line("" + "if (" + (self.$name()) + " == null) {");
-            self.$line("" + "  " + (self.$name()) + " = nil;");
-            return self.$line("}");
-          }, $InitializeIterarg_compile$1.$$arity = 0), nil) && 'compile';
-        })($nesting[0], $$($nesting, 'Base'), $nesting)
+            return self.$line("if (" + (self.$name()) + " == null) " + (self.$name()) + " = nil;")
+          }, 0);
+        })($nesting[0], $$('Base'))
       })($nesting[0], $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/args/initialize_shadowarg"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass;
+Opal.modules["opal/nodes/args/initialize_shadowarg"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$<<', '$locals', '$scope', '$name', '$add_arg', '$line']);
+  Opal.add_stubs('require,handle,children,<<,locals,scope,name,add_arg,line');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -35756,35 +32682,33 @@ Opal.modules["opal/nodes/args/initialize_shadowarg"] = function(Opal) {
       return (function($base, $parent_nesting) {
         var self = $module($base, 'Args');
 
-        var $nesting = [self].concat($parent_nesting);
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-        return (function($base, $super, $parent_nesting) {
+        return (function($base, $super) {
           var self = $klass($base, $super, 'InitializeShadowarg');
 
-          var $nesting = [self].concat($parent_nesting), $InitializeShadowarg_compile$1;
-
+          
           
           self.$handle("initialize_shadowarg");
           self.$children("name");
-          return (Opal.def(self, '$compile', $InitializeShadowarg_compile$1 = function $$compile() {
+          return $def(self, '$compile', function $$compile() {
             var self = this;
 
             
             self.$scope().$locals()['$<<'](self.$name());
             self.$scope().$add_arg(self.$name());
             return self.$line("" + (self.$name()) + " = nil;");
-          }, $InitializeShadowarg_compile$1.$$arity = 0), nil) && 'compile';
-        })($nesting[0], $$($nesting, 'Base'), $nesting)
+          }, 0);
+        })($nesting[0], $$('Base'))
       })($nesting[0], $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/args/parameters"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy;
+Opal.modules["opal/nodes/args/parameters"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $def = Opal.def, $send = Opal.send, $to_a = Opal.to_a, $truthy = Opal.truthy, $eqeq = Opal.eqeq;
 
-  Opal.add_stubs(['$children', '$map', '$public_send', '$type', '$join', '$compact', '$==']);
+  Opal.add_stubs('children,map,public_send,type,join,compact,==');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Opal');
 
@@ -35800,132 +32724,119 @@ Opal.modules["opal/nodes/args/parameters"] = function(Opal) {
 
         var $nesting = [self].concat($parent_nesting);
 
-        return (function($base, $super, $parent_nesting) {
+        return (function($base, $super) {
           var self = $klass($base, $super, 'Parameters');
 
-          var $nesting = [self].concat($parent_nesting), $Parameters_initialize$1, $Parameters_to_code$2, $Parameters_on_arg$4, $Parameters_on_mlhs$5, $Parameters_on_optarg$6, $Parameters_on_restarg$7, $Parameters_on_kwarg$8, $Parameters_on_kwoptarg$9, $Parameters_on_kwrestarg$10, $Parameters_on_blockarg$11, $Parameters_on_kwnilarg$12, $Parameters_on_shadowarg$13;
+          var $proto = self.$$prototype;
 
-          self.$$prototype.args = nil;
+          $proto.args = nil;
           
           
-          Opal.def(self, '$initialize', $Parameters_initialize$1 = function $$initialize(args) {
+          $def(self, '$initialize', function $$initialize(args) {
             var self = this;
 
             return (self.args = args.$children())
-          }, $Parameters_initialize$1.$$arity = 1);
+          }, 1);
           
-          Opal.def(self, '$to_code', $Parameters_to_code$2 = function $$to_code() {
-            var $$3, self = this, stringified_parameters = nil;
+          $def(self, '$to_code', function $$to_code() {
+            var self = this, stringified_parameters = nil;
 
             
-            stringified_parameters = $send(self.args, 'map', [], ($$3 = function(arg){var self = $$3.$$s == null ? this : $$3.$$s;
+            stringified_parameters = $send(self.args, 'map', [], function $$1(arg){var self = $$1.$$s == null ? this : $$1.$$s;
 
               
               
-              if (arg == null) {
-                arg = nil;
-              };
-              return $send(self, 'public_send', ["" + "on_" + (arg.$type())].concat(Opal.to_a(arg)));}, $$3.$$s = self, $$3.$$arity = 1, $$3));
-            return "" + "[" + (stringified_parameters.$compact().$join(", ")) + "]";
-          }, $Parameters_to_code$2.$$arity = 0);
+              if (arg == null) arg = nil;;
+              return $send(self, 'public_send', ["on_" + (arg.$type())].concat($to_a(arg)));}, {$$arity: 1, $$s: self});
+            return "[" + (stringified_parameters.$compact().$join(", ")) + "]";
+          }, 0);
           
-          Opal.def(self, '$on_arg', $Parameters_on_arg$4 = function $$on_arg(arg_name) {
-            var self = this;
-
-            return "" + "['req', '" + (arg_name) + "']"
-          }, $Parameters_on_arg$4.$$arity = 1);
+          $def(self, '$on_arg', function $$on_arg(arg_name) {
+            
+            return "['req', '" + (arg_name) + "']"
+          }, 1);
           
-          Opal.def(self, '$on_mlhs', $Parameters_on_mlhs$5 = function $$on_mlhs($a) {
-            var $post_args, self = this;
+          $def(self, '$on_mlhs', function $$on_mlhs($a) {
+            var $post_args, $rest_arg;
 
             
             
-            $post_args = Opal.slice.call(arguments, 0, arguments.length);
-            ;
+            $post_args = Opal.slice.call(arguments);
+            
+            $rest_arg = $post_args;;
             return "['req']";
-          }, $Parameters_on_mlhs$5.$$arity = -1);
+          }, -1);
           
-          Opal.def(self, '$on_optarg', $Parameters_on_optarg$6 = function $$on_optarg(arg_name, _default_value) {
-            var self = this;
-
-            return "" + "['opt', '" + (arg_name) + "']"
-          }, $Parameters_on_optarg$6.$$arity = 2);
+          $def(self, '$on_optarg', function $$on_optarg(arg_name, _default_value) {
+            
+            return "['opt', '" + (arg_name) + "']"
+          }, 2);
           
-          Opal.def(self, '$on_restarg', $Parameters_on_restarg$7 = function $$on_restarg(arg_name) {
-            var self = this;
-
+          $def(self, '$on_restarg', function $$on_restarg(arg_name) {
             
             
-            if (arg_name == null) {
-              arg_name = nil;
-            };
+            
+            if (arg_name == null) arg_name = nil;;
             if ($truthy(arg_name)) {
               
-              if (arg_name['$==']("fwd_rest_arg")) {
-                arg_name = "*"};
-              return "" + "['rest', '" + (arg_name) + "']";
+              if ($eqeq(arg_name, "fwd_rest_arg")) {
+                arg_name = "*"
+              };
+              return "['rest', '" + (arg_name) + "']";
             } else {
               return "['rest']"
             };
-          }, $Parameters_on_restarg$7.$$arity = -1);
+          }, -1);
           
-          Opal.def(self, '$on_kwarg', $Parameters_on_kwarg$8 = function $$on_kwarg(arg_name) {
-            var self = this;
-
-            return "" + "['keyreq', '" + (arg_name) + "']"
-          }, $Parameters_on_kwarg$8.$$arity = 1);
+          $def(self, '$on_kwarg', function $$on_kwarg(arg_name) {
+            
+            return "['keyreq', '" + (arg_name) + "']"
+          }, 1);
           
-          Opal.def(self, '$on_kwoptarg', $Parameters_on_kwoptarg$9 = function $$on_kwoptarg(arg_name, _default_value) {
-            var self = this;
-
-            return "" + "['key', '" + (arg_name) + "']"
-          }, $Parameters_on_kwoptarg$9.$$arity = 2);
+          $def(self, '$on_kwoptarg', function $$on_kwoptarg(arg_name, _default_value) {
+            
+            return "['key', '" + (arg_name) + "']"
+          }, 2);
           
-          Opal.def(self, '$on_kwrestarg', $Parameters_on_kwrestarg$10 = function $$on_kwrestarg(arg_name) {
-            var self = this;
-
+          $def(self, '$on_kwrestarg', function $$on_kwrestarg(arg_name) {
             
             
-            if (arg_name == null) {
-              arg_name = nil;
-            };
+            
+            if (arg_name == null) arg_name = nil;;
             if ($truthy(arg_name)) {
-              return "" + "['keyrest', '" + (arg_name) + "']"
+              return "['keyrest', '" + (arg_name) + "']"
             } else {
               return "['keyrest']"
             };
-          }, $Parameters_on_kwrestarg$10.$$arity = -1);
+          }, -1);
           
-          Opal.def(self, '$on_blockarg', $Parameters_on_blockarg$11 = function $$on_blockarg(arg_name) {
-            var self = this;
-
+          $def(self, '$on_blockarg', function $$on_blockarg(arg_name) {
             
-            if (arg_name['$==']("fwd_block_arg")) {
-              arg_name = "&"};
-            return "" + "['block', '" + (arg_name) + "']";
-          }, $Parameters_on_blockarg$11.$$arity = 1);
+            
+            if ($eqeq(arg_name, "fwd_block_arg")) {
+              arg_name = "&"
+            };
+            return "['block', '" + (arg_name) + "']";
+          }, 1);
           
-          Opal.def(self, '$on_kwnilarg', $Parameters_on_kwnilarg$12 = function $$on_kwnilarg() {
-            var self = this;
-
+          $def(self, '$on_kwnilarg', function $$on_kwnilarg() {
+            
             return "['nokey']"
-          }, $Parameters_on_kwnilarg$12.$$arity = 0);
-          return (Opal.def(self, '$on_shadowarg', $Parameters_on_shadowarg$13 = function $$on_shadowarg(_arg_name) {
-            var self = this;
-
+          }, 0);
+          return $def(self, '$on_shadowarg', function $$on_shadowarg(_arg_name) {
+            
             return nil
-          }, $Parameters_on_shadowarg$13.$$arity = 1), nil) && 'on_shadowarg';
-        })($nesting[0], null, $nesting)
+          }, 1);
+        })($nesting[0], null)
       })($nesting[0], $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/args/prepare_post_args"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass;
+Opal.modules["opal/nodes/args/prepare_post_args"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $eqeq = Opal.eqeq, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$add_temp', '$line', '$offset']);
+  Opal.add_stubs('require,handle,children,add_temp,==,offset,line');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -35941,43 +32852,36 @@ Opal.modules["opal/nodes/args/prepare_post_args"] = function(Opal) {
       return (function($base, $parent_nesting) {
         var self = $module($base, 'Args');
 
-        var $nesting = [self].concat($parent_nesting);
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-        return (function($base, $super, $parent_nesting) {
+        return (function($base, $super) {
           var self = $klass($base, $super, 'PreparePostArgs');
 
-          var $nesting = [self].concat($parent_nesting), $PreparePostArgs_compile$1;
-
+          
           
           self.$handle("prepare_post_args");
           self.$children("offset");
-          return (Opal.def(self, '$compile', $PreparePostArgs_compile$1 = function $$compile() {
+          return $def(self, '$compile', function $$compile() {
             var self = this;
 
             
             self.$add_temp("$post_args");
-            return self.$line("" + "$post_args = Opal.slice.call(arguments, " + (self.$offset()) + ", arguments.length)");
-          }, $PreparePostArgs_compile$1.$$arity = 0), nil) && 'compile';
-        })($nesting[0], $$($nesting, 'Base'), $nesting)
+            if ($eqeq(self.$offset(), 0)) {
+              return self.$line("$post_args = Opal.slice.call(arguments)")
+            } else {
+              return self.$line("$post_args = Opal.slice.call(arguments, " + (self.$offset()) + ")")
+            };
+          }, 0);
+        })($nesting[0], $$('Base'))
       })($nesting[0], $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/args"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $hash2 = Opal.hash2, $send = Opal.send, $truthy = Opal.truthy;
+Opal.modules["opal/nodes/args"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $hash2 = Opal.hash2, $send = Opal.send, $truthy = Opal.truthy, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $rb_plus = Opal.rb_plus, $rb_gt = Opal.rb_gt, $neqeq = Opal.neqeq, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$each_with_index', '$children', '$multiple_underscore?', '$[]', '$[]=', '$-', '$+', '$>', '$s', '$type', '$!=', '$push', '$process', '$==', '$count', '$start_with?', '$to_s', '$first']);
+  Opal.add_stubs('require,handle,each_with_index,children,multiple_underscore?,[],[]=,-,+,>,s,type,!=,push,process,==,count,start_with?,to_s,first');
   
   self.$require("opal/nodes/base");
   self.$require("opal/nodes/args/arg");
@@ -36005,32 +32909,27 @@ Opal.modules["opal/nodes/args"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'ArgsNode');
 
-        var $nesting = [self].concat($parent_nesting), $ArgsNode_compile$1, $ArgsNode_multiple_underscore$ques$3;
-
+        
         
         self.$handle("args");
         
-        Opal.def(self, '$compile', $ArgsNode_compile$1 = function $$compile() {
-          var $$2, self = this, same_arg_counter = nil;
+        $def(self, '$compile', function $$compile() {
+          var self = this, same_arg_counter = nil;
 
           
           same_arg_counter = $hash2([], {});
-          return $send(self.$children(), 'each_with_index', [], ($$2 = function(arg, idx){var self = $$2.$$s == null ? this : $$2.$$s, $ret_or_1 = nil, $writer = nil;
+          return $send(self.$children(), 'each_with_index', [], function $$1(arg, idx){var self = $$1.$$s == null ? this : $$1.$$s, $ret_or_1 = nil, $writer = nil;
 
             
             
-            if (arg == null) {
-              arg = nil;
-            };
+            if (arg == null) arg = nil;;
             
-            if (idx == null) {
-              idx = nil;
-            };
+            if (idx == null) idx = nil;;
             if ($truthy(self['$multiple_underscore?'](arg))) {
               
               if ($truthy(($ret_or_1 = same_arg_counter['$[]'](arg)))) {
@@ -36038,46 +32937,40 @@ Opal.modules["opal/nodes/args"] = function(Opal) {
               } else {
                 
                 $writer = [arg, 0];
-                $send(same_arg_counter, '[]=', Opal.to_a($writer));
+                $send(same_arg_counter, '[]=', $to_a($writer));
                 $writer[$rb_minus($writer["length"], 1)];
               };
               
               $writer = [arg, $rb_plus(same_arg_counter['$[]'](arg), 1)];
-              $send(same_arg_counter, '[]=', Opal.to_a($writer));
+              $send(same_arg_counter, '[]=', $to_a($writer));
               $writer[$rb_minus($writer["length"], 1)];;
               if ($truthy($rb_gt(same_arg_counter['$[]'](arg), 1))) {
-                arg = self.$s(arg.$type(), "" + (arg.$children()['$[]'](0)) + "_$" + (same_arg_counter['$[]'](arg)))};};
-            if ($truthy(idx['$!='](0))) {
-              self.$push(", ")};
-            return self.$push(self.$process(arg));}, $$2.$$s = self, $$2.$$arity = 2, $$2));
-        }, $ArgsNode_compile$1.$$arity = 0);
-        return (Opal.def(self, '$multiple_underscore?', $ArgsNode_multiple_underscore$ques$3 = function(arg) {
-          var self = this, $ret_or_2 = nil, $ret_or_3 = nil, $ret_or_4 = nil;
-
-          if ($truthy(($ret_or_2 = (function() {if ($truthy(($ret_or_3 = (function() {if ($truthy(($ret_or_4 = arg.$type()['$==']("arg")))) {
-            return arg.$children().$count()['$=='](1)
-          } else {
-            return $ret_or_4
-          }; return nil; })()))) {
-            return arg.$children().$first().$to_s()['$start_with?']("_")
-          } else {
-            return $ret_or_3
-          }; return nil; })()))) {
+                arg = self.$s(arg.$type(), "" + (arg.$children()['$[]'](0)) + "_$" + (same_arg_counter['$[]'](arg)))
+              };
+            };
+            if ($neqeq(idx, 0)) {
+              self.$push(", ")
+            };
+            return self.$push(self.$process(arg));}, {$$arity: 2, $$s: self});
+        }, 0);
+        return $def(self, '$multiple_underscore?', function $ArgsNode_multiple_underscore$ques$2(arg) {
+          var self = this, $ret_or_1 = nil, $ret_or_2 = nil, $ret_or_3 = nil;
+
+          if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = ($truthy(($ret_or_3 = arg.$type()['$==']("arg"))) ? (arg.$children().$count()['$=='](1)) : ($ret_or_3)))) ? (arg.$children().$first().$to_s()['$start_with?']("_")) : ($ret_or_2))))) {
             return $rb_gt(self.$children().$count(arg), 1)
           } else {
-            return $ret_or_2
+            return $ret_or_1
           }
-        }, $ArgsNode_multiple_underscore$ques$3.$$arity = 1), nil) && 'multiple_underscore?';
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+        }, 1);
+      })($nesting[0], $$('Base'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/node_with_args"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $truthy = Opal.truthy;
+Opal.modules["opal/nodes/node_with_args"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $to_a = Opal.to_a, $def = Opal.def, $truthy = Opal.truthy;
 
-  Opal.add_stubs(['$require', '$attr_reader', '$attr_accessor', '$[]', '$meta', '$s', '$original_args', '$push', '$process', '$arity_check_node', '$uses_block?', '$scope', '$identity', '$block_name', '$add_temp', '$line', '$to_code', '$new']);
+  Opal.add_stubs('require,attr_reader,attr_accessor,[],meta,s,original_args,push,process,arity_check_node,uses_block?,scope,prepare_block,to_code,new');
   
   self.$require("opal/nodes/scope");
   self.$require("opal/nodes/args/parameters");
@@ -36089,85 +32982,69 @@ Opal.modules["opal/nodes/node_with_args"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'NodeWithArgs');
 
-        var $nesting = [self].concat($parent_nesting), $NodeWithArgs_initialize$1, $NodeWithArgs_arity_check_node$2, $NodeWithArgs_compile_arity_check$3, $NodeWithArgs_compile_block_arg$4, $NodeWithArgs_parameters_code$5;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.sexp = nil;
+        $proto.sexp = nil;
         
         self.$attr_reader("used_kwargs");
         self.$attr_accessor("arity");
         self.$attr_reader("original_args");
         
-        Opal.def(self, '$initialize', $NodeWithArgs_initialize$1 = function $$initialize($a) {
-          var $post_args, $iter = $NodeWithArgs_initialize$1.$$p, $yield = $iter || nil, self = this, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        $def(self, '$initialize', function $$initialize($a) {
+          var $post_args, $rest_arg, $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $NodeWithArgs_initialize$1.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$initialize.$$p;
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
-          ;
-          $send2(self, $find_super(self, 'initialize', $NodeWithArgs_initialize$1, false, true), 'initialize', $zuper, $iter);
+          $post_args = Opal.slice.call(arguments);
+          
+          $rest_arg = $post_args;;
+          $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', $to_a($rest_arg), $yield);
           self.original_args = self.sexp.$meta()['$[]']("original_args");
           self.used_kwargs = [];
           return (self.arity = 0);
-        }, $NodeWithArgs_initialize$1.$$arity = -1);
+        }, -1);
         
-        Opal.def(self, '$arity_check_node', $NodeWithArgs_arity_check_node$2 = function $$arity_check_node() {
+        $def(self, '$arity_check_node', function $$arity_check_node() {
           var self = this;
 
           return self.$s("arity_check", self.$original_args())
-        }, $NodeWithArgs_arity_check_node$2.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_arity_check', $NodeWithArgs_compile_arity_check$3 = function $$compile_arity_check() {
+        $def(self, '$compile_arity_check', function $$compile_arity_check() {
           var self = this;
 
           return self.$push(self.$process(self.$arity_check_node()))
-        }, $NodeWithArgs_compile_arity_check$3.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_block_arg', $NodeWithArgs_compile_block_arg$4 = function $$compile_block_arg() {
-          var self = this, scope_name = nil, yielder = nil, $ret_or_1 = nil;
+        $def(self, '$compile_block_arg', function $$compile_block_arg() {
+          var self = this;
 
           if ($truthy(self.$scope()['$uses_block?']())) {
-            
-            scope_name = self.$scope().$identity();
-            yielder = (function() {if ($truthy(($ret_or_1 = self.$scope().$block_name()))) {
-              return $ret_or_1
-            } else {
-              return "$yield"
-            }; return nil; })();
-            self.$add_temp("" + "$iter = " + (scope_name) + ".$$p");
-            self.$add_temp("" + (yielder) + " = $iter || nil");
-            return self.$line("" + "if ($iter) " + (scope_name) + ".$$p = null;");
+            return self.$scope().$prepare_block()
           } else {
             return nil
           }
-        }, $NodeWithArgs_compile_block_arg$4.$$arity = 0);
-        return (Opal.def(self, '$parameters_code', $NodeWithArgs_parameters_code$5 = function $$parameters_code() {
+        }, 0);
+        return $def(self, '$parameters_code', function $$parameters_code() {
           var self = this;
 
-          return $$$($$($nesting, 'Args'), 'Parameters').$new(self.$original_args()).$to_code()
-        }, $NodeWithArgs_parameters_code$5.$$arity = 0), nil) && 'parameters_code';
-      })($nesting[0], $$($nesting, 'ScopeNode'), $nesting)
+          return $$$($$('Args'), 'Parameters').$new(self.$original_args()).$to_code()
+        }, 0);
+      })($nesting[0], $$('ScopeNode'), $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/iter"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send;
+Opal.modules["opal/nodes/iter"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send, $eqeq = Opal.eqeq, $rb_gt = Opal.rb_gt, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$lambda_definition?', '$scope', '$is_lambda!', '$in_scope', '$identify!', '$add_temp', '$process', '$inline_args', '$compile_arity_check', '$stmt', '$returned_body', '$to_vars', '$line', '$catch_return', '$unshift', '$push', '$contains_break?', '$arity', '$arity_check?', '$compiler', '$parameters_code', '$has_top_level_mlhs_arg?', '$has_trailing_comma_in_args?', '$block_arg', '$block_name=', '$-', '$each', '$args', '$first', '$==', '$<<', '$updated', '$body', '$returns', '$s', '$any?', '$original_args', '$type', '$loc', '$expression', '$source', '$match', '$new', '$found_break?']);
+  Opal.add_stubs('require,handle,children,lambda_definition?,scope,is_lambda!,in_scope,identify!,process,inline_args,compile_arity_check,stmt,returned_body,add_temp,to_vars,line,catch_return,unshift,push,await_encountered,<<,arity,self,contains_break?,arity_check?,compiler,parameters_code,has_top_level_mlhs_arg?,has_trailing_comma_in_args?,==,length,>,join,nesting,relative_access,block_arg,prepare_block,each,args,first,updated,body,returns,s,any?,original_args,type,expression,loc,source,match,new,found_break?');
   
   self.$require("opal/nodes/node_with_args");
   self.$require("opal/rewriters/break_finder");
@@ -36179,34 +33056,38 @@ Opal.modules["opal/nodes/iter"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'IterNode');
 
-        var $nesting = [self].concat($parent_nesting), $IterNode_compile$1, $IterNode_compile_block_arg$3, $IterNode_extract_underscore_args$4, $IterNode_returned_body$6, $IterNode_has_top_level_mlhs_arg$ques$7, $IterNode_has_trailing_comma_in_args$ques$9, $IterNode_arity_check_node$10, $IterNode_contains_break$ques$11;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.sexp = nil;
+        $proto.define_self = $proto.define_nesting = $proto.define_relative_access = $proto.sexp = nil;
         
         self.$handle("iter");
         self.$children("inline_args", "body");
         
-        Opal.def(self, '$compile', $IterNode_compile$1 = function $$compile() {
-          var $$2, self = this, inline_params = nil, to_vars = nil, identity = nil, body_code = nil;
+        $def(self, '$compile', function $$compile() {
+          var self = this, inline_params = nil, to_vars = nil, identity = nil, body_code = nil, blockopts = nil;
 
           
           if ($truthy(self.$scope()['$lambda_definition?']())) {
-            self['$is_lambda!']()};
+            self['$is_lambda!']()
+          };
           inline_params = nil;
           to_vars = (identity = (body_code = nil));
-          $send(self, 'in_scope', [], ($$2 = function(){var self = $$2.$$s == null ? this : $$2.$$s;
+          $send(self, 'in_scope', [], function $$1(){var self = $$1.$$s == null ? this : $$1.$$s;
+            if (self.define_self == null) self.define_self = nil;
 
             
             identity = self.$scope()['$identify!']();
-            self.$add_temp("" + "self = " + (identity) + ".$$s == null ? this : " + (identity) + ".$$s");
             inline_params = self.$process(self.$inline_args());
             self.$compile_arity_check();
             body_code = self.$stmt(self.$returned_body());
+            if ($truthy(self.define_self)) {
+              self.$add_temp("self = " + (identity) + ".$$s == null ? this : " + (identity) + ".$$s")
+            };
             to_vars = self.$scope().$to_vars();
             self.$line(body_code);
             if ($truthy(self.$scope().$catch_return())) {
@@ -36216,55 +33097,69 @@ Opal.modules["opal/nodes/iter"] = function(Opal) {
               return self.$push(" throw $returner; }");
             } else {
               return nil
-            };}, $$2.$$s = self, $$2.$$arity = 0, $$2));
+            };}, {$$arity: 0, $$s: self});
           self.$unshift(to_vars);
-          self.$unshift("" + "(" + (identity) + " = function(", inline_params, "){");
-          self.$push("" + "}, " + (identity) + ".$$s = self,");
+          if ($truthy(self.$await_encountered())) {
+            self.$unshift("async function " + (identity) + "(", inline_params, "){")
+          } else {
+            self.$unshift("function " + (identity) + "(", inline_params, "){")
+          };
+          self.$push("}");
+          blockopts = [];
+          blockopts['$<<']("$$arity: " + (self.$arity()));
+          if ($truthy(self.define_self)) {
+            blockopts['$<<']("$$s: " + (self.$scope().$self()))
+          };
           if ($truthy(self['$contains_break?']())) {
-            self.$push("" + " " + (identity) + ".$$brk = $brk,")};
-          self.$push("" + " " + (identity) + ".$$arity = " + (self.$arity()) + ",");
+            blockopts['$<<']("$$brk: $brk")
+          };
           if ($truthy(self.$compiler()['$arity_check?']())) {
-            self.$push("" + " " + (identity) + ".$$parameters = " + (self.$parameters_code()) + ",")};
+            blockopts['$<<']("$$parameters: " + (self.$parameters_code()))
+          };
           if ($truthy(self['$has_top_level_mlhs_arg?']())) {
-            self.$push("" + " " + (identity) + ".$$has_top_level_mlhs_arg = true,")};
+            blockopts['$<<']("$$has_top_level_mlhs_arg: true")
+          };
           if ($truthy(self['$has_trailing_comma_in_args?']())) {
-            self.$push("" + " " + (identity) + ".$$has_trailing_comma_in_args = true,")};
-          return self.$push("" + " " + (identity) + ")");
-        }, $IterNode_compile$1.$$arity = 0);
+            blockopts['$<<']("$$has_trailing_comma_in_args: true")
+          };
+          if ($eqeq(blockopts.$length(), 1)) {
+            self.$push(", " + (self.$arity()))
+          } else if ($truthy($rb_gt(blockopts.$length(), 1))) {
+            self.$push(", {", blockopts.$join(", "), "}")
+          };
+          if ($truthy(self.define_nesting)) {
+            self.$scope().$nesting()
+          };
+          if ($truthy(self.define_relative_access)) {
+            return self.$scope().$relative_access()
+          } else {
+            return nil
+          };
+        }, 0);
         
-        Opal.def(self, '$compile_block_arg', $IterNode_compile_block_arg$3 = function $$compile_block_arg() {
-          var self = this, $writer = nil, scope_name = nil;
+        $def(self, '$compile_block_arg', function $$compile_block_arg() {
+          var self = this;
 
           if ($truthy(self.$block_arg())) {
-            
-            
-            $writer = [self.$block_arg()];
-            $send(self.$scope(), 'block_name=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];;
-            self.$scope().$add_temp(self.$block_arg());
-            scope_name = self.$scope()['$identify!']();
-            self.$line("" + (self.$block_arg()) + " = " + (scope_name) + ".$$p || nil;");
-            return self.$line("" + "if (" + (self.$block_arg()) + ") " + (scope_name) + ".$$p = null;");
+            return self.$scope().$prepare_block()
           } else {
             return nil
           }
-        }, $IterNode_compile_block_arg$3.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$extract_underscore_args', $IterNode_extract_underscore_args$4 = function $$extract_underscore_args() {
-          var $$5, self = this, valid_args = nil, caught_blank_argument = nil;
+        $def(self, '$extract_underscore_args', function $$extract_underscore_args() {
+          var self = this, valid_args = nil, caught_blank_argument = nil;
 
           
           valid_args = [];
           caught_blank_argument = false;
-          $send(self.$args().$children(), 'each', [], ($$5 = function(arg){var self = $$5.$$s == null ? this : $$5.$$s, arg_name = nil;
+          $send(self.$args().$children(), 'each', [], function $$2(arg){var arg_name = nil;
 
             
             
-            if (arg == null) {
-              arg = nil;
-            };
+            if (arg == null) arg = nil;;
             arg_name = arg.$children().$first();
-            if (arg_name['$==']("_")) {
+            if ($eqeq(arg_name, "_")) {
               if ($truthy(caught_blank_argument)) {
                 return nil
               } else {
@@ -36274,78 +33169,60 @@ Opal.modules["opal/nodes/iter"] = function(Opal) {
               }
             } else {
               return valid_args['$<<'](arg)
-            };}, $$5.$$s = self, $$5.$$arity = 1, $$5));
+            };}, 1);
           return (self.sexp = self.sexp.$updated(nil, [self.$args().$updated(nil, valid_args), self.$body()]));
-        }, $IterNode_extract_underscore_args$4.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$returned_body', $IterNode_returned_body$6 = function $$returned_body() {
+        $def(self, '$returned_body', function $$returned_body() {
           var self = this, $ret_or_1 = nil;
 
-          return self.$compiler().$returns((function() {if ($truthy(($ret_or_1 = self.$body()))) {
-            return $ret_or_1
-          } else {
-            return self.$s("nil")
-          }; return nil; })())
-        }, $IterNode_returned_body$6.$$arity = 0);
+          return self.$compiler().$returns(($truthy(($ret_or_1 = self.$body())) ? ($ret_or_1) : (self.$s("nil"))))
+        }, 0);
         
-        Opal.def(self, '$has_top_level_mlhs_arg?', $IterNode_has_top_level_mlhs_arg$ques$7 = function() {
-          var $$8, self = this;
-
-          return $send(self.$original_args().$children(), 'any?', [], ($$8 = function(arg){var self = $$8.$$s == null ? this : $$8.$$s;
+        $def(self, '$has_top_level_mlhs_arg?', function $IterNode_has_top_level_mlhs_arg$ques$3() {
+          var self = this;
 
+          return $send(self.$original_args().$children(), 'any?', [], function $$4(arg){
             
             
-            if (arg == null) {
-              arg = nil;
-            };
-            return arg.$type()['$==']("mlhs");}, $$8.$$s = self, $$8.$$arity = 1, $$8))
-        }, $IterNode_has_top_level_mlhs_arg$ques$7.$$arity = 0);
+            if (arg == null) arg = nil;;
+            return arg.$type()['$==']("mlhs");}, 1)
+        }, 0);
         
-        Opal.def(self, '$has_trailing_comma_in_args?', $IterNode_has_trailing_comma_in_args$ques$9 = function() {
-          var self = this, $ret_or_2 = nil, args_source = nil;
+        $def(self, '$has_trailing_comma_in_args?', function $IterNode_has_trailing_comma_in_args$ques$5() {
+          var self = this, args_source = nil;
 
-          if ($truthy((function() {if ($truthy(($ret_or_2 = self.$original_args().$loc()))) {
-            return self.$original_args().$loc().$expression()
-          } else {
-            return $ret_or_2
-          }; return nil; })())) {
+          if (($truthy(self.$original_args().$loc()) && ($truthy(self.$original_args().$loc().$expression())))) {
             
             args_source = self.$original_args().$loc().$expression().$source();
             return args_source.$match(/,\s*\|/);
           } else {
             return nil
           }
-        }, $IterNode_has_trailing_comma_in_args$ques$9.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$arity_check_node', $IterNode_arity_check_node$10 = function $$arity_check_node() {
+        $def(self, '$arity_check_node', function $$arity_check_node() {
           var self = this;
 
           return self.$s("iter_arity_check", self.$original_args())
-        }, $IterNode_arity_check_node$10.$$arity = 0);
-        return (Opal.def(self, '$contains_break?', $IterNode_contains_break$ques$11 = function() {
+        }, 0);
+        return $def(self, '$contains_break?', function $IterNode_contains_break$ques$6() {
           var self = this, finder = nil;
 
           
-          finder = $$$($$$($$($nesting, 'Opal'), 'Rewriters'), 'BreakFinder').$new();
+          finder = $$$($$$($$('Opal'), 'Rewriters'), 'BreakFinder').$new();
           finder.$process(self.sexp);
           return finder['$found_break?']();
-        }, $IterNode_contains_break$ques$11.$$arity = 0), nil) && 'contains_break?';
-      })($nesting[0], $$($nesting, 'NodeWithArgs'), $nesting)
+        }, 0);
+      })($nesting[0], $$('NodeWithArgs'), $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/def"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy;
+Opal.modules["opal/nodes/def"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $eqeq = Opal.eqeq, $truthy = Opal.truthy, $rb_gt = Opal.rb_gt, $def = Opal.def, $rb_plus = Opal.rb_plus;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$in_scope', '$mid', '$mid=', '$scope', '$-', '$==', '$type', '$defs=', '$identify!', '$identity', '$block_name=', '$process', '$inline_args', '$stmt', '$returns', '$compiler', '$stmts', '$compile_block_arg', '$add_temp', '$compile_arity_check', '$uses_zuper', '$prepare_super', '$unshift', '$current_indent', '$to_vars', '$line', '$catch_return', '$push', '$valid_name?', '$arity', '$arity_check?', '$parameters_code', '$parse_comments?', '$comments_code', '$enable_source_location?', '$source_location', '$wrap_with_definition', '$wrap', '$expr?', '$+', '$join', '$map', '$comments', '$inspect', '$text', '$add_local']);
+  Opal.add_stubs('require,handle,children,in_scope,mid,mid=,scope,-,==,type,defs=,identify!,identity,block_name=,process,inline_args,stmt,returns,compiler,stmts,compile_block_arg,add_temp,compile_arity_check,unshift,current_indent,to_vars,line,catch_return,push,await_encountered,<<,arity,arity_check?,parameters_code,parse_comments?,comments_code,enable_source_location?,source_location,length,>,join,wrap_with_definition,nesting,relative_access,helper,wrap,self,expr?,+,map,comments,inspect,text');
   
   self.$require("opal/nodes/node_with_args");
   return (function($base, $parent_nesting) {
@@ -36356,50 +33233,53 @@ Opal.modules["opal/nodes/def"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'DefNode');
 
-        var $nesting = [self].concat($parent_nesting), $DefNode_compile$1, $DefNode_wrap_with_definition$3, $DefNode_comments_code$4, $DefNode_prepare_super$6;
+        var $proto = self.$$prototype;
 
+        $proto.define_nesting = $proto.define_relative_access = nil;
         
         self.$handle("def");
         self.$children("mid", "inline_args", "stmts");
         
-        Opal.def(self, '$compile', $DefNode_compile$1 = function $$compile() {
-          var $$2, self = this, inline_params = nil, scope_name = nil, function_name = nil;
+        $def(self, '$compile', function $$compile() {
+          var self = this, inline_params = nil, scope_name = nil, blockopts = nil;
 
           
           inline_params = nil;
           scope_name = nil;
-          $send(self, 'in_scope', [], ($$2 = function(){var self = $$2.$$s == null ? this : $$2.$$s, $writer = nil, stmt_code = nil;
+          $send(self, 'in_scope', [], function $$1(){var self = $$1.$$s == null ? this : $$1.$$s, $writer = nil, stmt_code = nil;
             if (self.sexp == null) self.sexp = nil;
+            if (self.define_self == null) self.define_self = nil;
 
             
             
             $writer = [self.$mid()];
-            $send(self.$scope(), 'mid=', Opal.to_a($writer));
+            $send(self.$scope(), 'mid=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
-            if (self.sexp.$type()['$==']("defs")) {
+            if ($eqeq(self.sexp.$type(), "defs")) {
               
               $writer = [true];
-              $send(self.$scope(), 'defs=', Opal.to_a($writer));
-              $writer[$rb_minus($writer["length"], 1)];};
+              $send(self.$scope(), 'defs=', $to_a($writer));
+              $writer[$rb_minus($writer["length"], 1)];
+            };
             self.$scope()['$identify!']();
             scope_name = self.$scope().$identity();
             
             $writer = ["$yield"];
-            $send(self.$scope(), 'block_name=', Opal.to_a($writer));
+            $send(self.$scope(), 'block_name=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
             inline_params = self.$process(self.$inline_args());
             stmt_code = self.$stmt(self.$compiler().$returns(self.$stmts()));
             self.$compile_block_arg();
-            self.$add_temp("self = this");
+            if ($truthy(self.define_self)) {
+              self.$add_temp("self = this")
+            };
             self.$compile_arity_check();
-            if ($truthy(self.$scope().$uses_zuper())) {
-              self.$prepare_super()};
-            self.$unshift("" + "\n" + (self.$current_indent()), self.$scope().$to_vars());
+            self.$unshift("\n" + (self.$current_indent()), self.$scope().$to_vars());
             self.$line(stmt_code);
             if ($truthy(self.$scope().$catch_return())) {
               
@@ -36408,74 +33288,71 @@ Opal.modules["opal/nodes/def"] = function(Opal) {
               return self.$push(" throw $returner; }");
             } else {
               return nil
-            };}, $$2.$$s = self, $$2.$$arity = 0, $$2));
-          function_name = (function() {if ($truthy(self['$valid_name?'](self.$mid()))) {
-            return "" + " $$" + (self.$mid())
-          } else {
-            return ""
-          }; return nil; })();
+            };}, {$$arity: 0, $$s: self});
           self.$unshift(") {");
           self.$unshift(inline_params);
-          self.$unshift("" + "function" + (function_name) + "(");
-          if ($truthy(scope_name)) {
-            self.$unshift("" + (scope_name) + " = ")};
+          self.$unshift("function " + (scope_name) + "(");
+          if ($truthy(self.$await_encountered())) {
+            self.$unshift("async ")
+          };
           self.$line("}");
-          self.$push("" + ", " + (scope_name) + ".$$arity = " + (self.$arity()));
+          blockopts = [];
+          blockopts['$<<']("$$arity: " + (self.$arity()));
           if ($truthy(self.$compiler()['$arity_check?']())) {
-            self.$push("" + ", " + (scope_name) + ".$$parameters = " + (self.$parameters_code()))};
+            blockopts['$<<']("$$parameters: " + (self.$parameters_code()))
+          };
           if ($truthy(self.$compiler()['$parse_comments?']())) {
-            self.$push("" + ", " + (scope_name) + ".$$comments = " + (self.$comments_code()))};
+            blockopts['$<<']("$$comments: " + (self.$comments_code()))
+          };
           if ($truthy(self.$compiler()['$enable_source_location?']())) {
-            self.$push("" + ", " + (scope_name) + ".$$source_location = " + (self.$source_location()))};
-          return self.$wrap_with_definition();
-        }, $DefNode_compile$1.$$arity = 0);
+            blockopts['$<<']("$$source_location: " + (self.$source_location()))
+          };
+          if ($eqeq(blockopts.$length(), 1)) {
+            self.$push(", " + (self.$arity()))
+          } else if ($truthy($rb_gt(blockopts.$length(), 1))) {
+            self.$push(", {", blockopts.$join(", "), "}")
+          };
+          self.$wrap_with_definition();
+          if ($truthy(self.define_nesting)) {
+            self.$scope().$nesting()
+          };
+          if ($truthy(self.define_relative_access)) {
+            return self.$scope().$relative_access()
+          } else {
+            return nil
+          };
+        }, 0);
         
-        Opal.def(self, '$wrap_with_definition', $DefNode_wrap_with_definition$3 = function $$wrap_with_definition() {
+        $def(self, '$wrap_with_definition', function $$wrap_with_definition() {
           var self = this;
 
           
-          self.$wrap("" + "Opal.def(self, '$" + (self.$mid()) + "', ", ")");
+          self.$helper("def");
+          self.$wrap("$def(" + (self.$scope().$self()) + ", '$" + (self.$mid()) + "', ", ")");
           if ($truthy(self['$expr?']())) {
-            return self.$wrap("(", "" + ", nil) && '" + (self.$mid()) + "'")
+            return nil
           } else {
-            return self.$unshift("" + "\n" + (self.$current_indent()))
+            return self.$unshift("\n" + (self.$current_indent()))
           };
-        }, $DefNode_wrap_with_definition$3.$$arity = 0);
-        
-        Opal.def(self, '$comments_code', $DefNode_comments_code$4 = function $$comments_code() {
-          var $$5, self = this;
-
-          return $rb_plus($rb_plus("[", $send(self.$comments(), 'map', [], ($$5 = function(comment){var self = $$5.$$s == null ? this : $$5.$$s;
+        }, 0);
+        return $def(self, '$comments_code', function $$comments_code() {
+          var self = this;
 
+          return $rb_plus($rb_plus("[", $send(self.$comments(), 'map', [], function $$2(comment){
             
             
-            if (comment == null) {
-              comment = nil;
-            };
-            return comment.$text().$inspect();}, $$5.$$s = self, $$5.$$arity = 1, $$5)).$join(", ")), "]")
-        }, $DefNode_comments_code$4.$$arity = 0);
-        return (Opal.def(self, '$prepare_super', $DefNode_prepare_super$6 = function $$prepare_super() {
-          var self = this;
-
-          
-          self.$add_local("$zuper");
-          self.$add_local("$zuper_i");
-          self.$add_local("$zuper_ii");
-          self.$line("// Prepare super implicit arguments");
-          self.$line("for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {");
-          self.$line("  $zuper[$zuper_i] = arguments[$zuper_i];");
-          return self.$line("}");
-        }, $DefNode_prepare_super$6.$$arity = 0), nil) && 'prepare_super';
-      })($nesting[0], $$($nesting, 'NodeWithArgs'), $nesting)
+            if (comment == null) comment = nil;;
+            return comment.$text().$inspect();}, 1).$join(", ")), "]")
+        }, 0);
+      })($nesting[0], $$('NodeWithArgs'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/defs"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy;
+Opal.modules["opal/nodes/defs"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$unshift', '$expr', '$recvr', '$mid', '$push', '$expr?', '$wrap']);
+  Opal.add_stubs('require,handle,children,helper,unshift,expr,recvr,mid,push');
   
   self.$require("opal/nodes/def");
   return (function($base, $parent_nesting) {
@@ -36486,38 +33363,32 @@ Opal.modules["opal/nodes/defs"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'DefsNode');
 
-        var $nesting = [self].concat($parent_nesting), $DefsNode_wrap_with_definition$1;
-
+        
         
         self.$handle("defs");
         self.$children("recvr", "mid", "inline_args", "stmts");
-        return (Opal.def(self, '$wrap_with_definition', $DefsNode_wrap_with_definition$1 = function $$wrap_with_definition() {
+        return $def(self, '$wrap_with_definition', function $$wrap_with_definition() {
           var self = this;
 
           
-          self.$unshift("Opal.defs(", self.$expr(self.$recvr()), "" + ", '$" + (self.$mid()) + "', ");
-          self.$push(")");
-          if ($truthy(self['$expr?']())) {
-            return self.$wrap("(", "" + ", nil) && '" + (self.$mid()) + "'")
-          } else {
-            return nil
-          };
-        }, $DefsNode_wrap_with_definition$1.$$arity = 0), nil) && 'wrap_with_definition';
-      })($nesting[0], $$($nesting, 'DefNode'), $nesting)
+          self.$helper("defs");
+          self.$unshift("$defs(", self.$expr(self.$recvr()), ", '$" + (self.$mid()) + "', ");
+          return self.$push(")");
+        }, 0);
+      })($nesting[0], $$('DefNode'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/if"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send;
+Opal.modules["opal/nodes/if"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $eqeq = Opal.eqeq, $def = Opal.def, $not = Opal.not, $send = Opal.send, $eqeqeq = Opal.eqeqeq;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$truthy', '$falsy', '$push', '$js_truthy', '$test', '$indent', '$line', '$stmt', '$==', '$type', '$needs_wrapper?', '$wrap', '$returns', '$compiler', '$true_body', '$s', '$false_body', '$expr?', '$recv?', '$helper', '$new_temp', '$top_scope', '$excl', '$from', '$to']);
+  Opal.add_stubs('require,handle,children,should_compile_as_simple_expression?,==,true_body,s,compile_with_binary_or,false_body,compile_with_binary_and,compile_with_ternary,compile_with_if,truthy,falsy,!,push,js_truthy,test,indent,line,stmt,type,expects_expression?,await_encountered,scope,wrap,returnify,returns,compiler,expr?,recv?,simple?,expr,[],meta,sexp,===,single_line?,strip_empty_children,all?,helper,new_temp,top_scope,excl,from,to');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -36528,152 +33399,244 @@ Opal.modules["opal/nodes/if"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
       (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'IfNode');
 
-        var $nesting = [self].concat($parent_nesting), $IfNode_compile$1, $IfNode_truthy$4, $IfNode_falsy$5, $IfNode_needs_wrapper$ques$6;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
         
         self.$handle("if");
         self.$children("test", "true_body", "false_body");
         
-        Opal.def(self, '$compile', $IfNode_compile$1 = function $$compile() {
-          var $$2, $$3, self = this, truthy = nil, falsy = nil;
+        $def(self, '$compile', function $$compile() {
+          var self = this;
+
+          if ($truthy(self['$should_compile_as_simple_expression?']())) {
+            if ($eqeq(self.$true_body(), self.$s("true"))) {
+              return self.$compile_with_binary_or()
+            } else if ($eqeq(self.$false_body(), self.$s("false"))) {
+              return self.$compile_with_binary_and()
+            } else {
+              return self.$compile_with_ternary()
+            }
+          } else {
+            return self.$compile_with_if()
+          }
+        }, 0);
+        
+        $def(self, '$compile_with_if', function $$compile_with_if() {
+          var $a, self = this, truthy = nil, falsy = nil;
 
           
           truthy = self.$truthy();
           falsy = self.$falsy();
-          self.$push("if (", self.$js_truthy(self.$test()), ") {");
+          if (($truthy(falsy) && ($not(truthy)))) {
+            
+            self.$push("if (!", self.$js_truthy(self.$test()), ") {");
+            $a = [truthy, falsy], (falsy = $a[0]), (truthy = $a[1]), $a;
+          } else {
+            self.$push("if (", self.$js_truthy(self.$test()), ") {")
+          };
           if ($truthy(truthy)) {
-            $send(self, 'indent', [], ($$2 = function(){var self = $$2.$$s == null ? this : $$2.$$s;
+            $send(self, 'indent', [], function $$1(){var self = $$1.$$s == null ? this : $$1.$$s;
 
-              return self.$line(self.$stmt(truthy))}, $$2.$$s = self, $$2.$$arity = 0, $$2))};
+              return self.$line(self.$stmt(truthy))}, {$$arity: 0, $$s: self})
+          };
           if ($truthy(falsy)) {
-            if (falsy.$type()['$==']("if")) {
+            if ($eqeq(falsy.$type(), "if")) {
               self.$line("} else ", self.$stmt(falsy))
             } else {
               
               self.$line("} else {");
-              $send(self, 'indent', [], ($$3 = function(){var self = $$3.$$s == null ? this : $$3.$$s;
+              $send(self, 'indent', [], function $$2(){var self = $$2.$$s == null ? this : $$2.$$s;
 
-                return self.$line(self.$stmt(falsy))}, $$3.$$s = self, $$3.$$arity = 0, $$3));
+                return self.$line(self.$stmt(falsy))}, {$$arity: 0, $$s: self});
               self.$line("}");
             }
           } else {
-            self.$push("}")
+            
+            self.$line("}");
+            if ($truthy(self['$expects_expression?']())) {
+              self.$line("return nil;")
+            };
           };
-          if ($truthy(self['$needs_wrapper?']())) {
-            return self.$wrap("(function() {", "; return nil; })()")
+          if ($truthy(self['$expects_expression?']())) {
+            if ($truthy(self.$scope().$await_encountered())) {
+              return self.$wrap("(await (async function() {", "})())")
+            } else {
+              return self.$wrap("(function() {", "})()")
+            }
           } else {
             return nil
           };
-        }, $IfNode_compile$1.$$arity = 0);
+        }, 0);
+        
+        $def(self, '$truthy', function $$truthy() {
+          var self = this;
+
+          return self.$returnify(self.$true_body())
+        }, 0);
+        
+        $def(self, '$falsy', function $$falsy() {
+          var self = this;
+
+          return self.$returnify(self.$false_body())
+        }, 0);
         
-        Opal.def(self, '$truthy', $IfNode_truthy$4 = function $$truthy() {
+        $def(self, '$returnify', function $$returnify(body) {
+          var self = this;
+
+          if (($truthy(self['$expects_expression?']()) && ($truthy(body)))) {
+            return self.$compiler().$returns(body)
+          } else {
+            return body
+          }
+        }, 1);
+        
+        $def(self, '$expects_expression?', function $IfNode_expects_expression$ques$3() {
           var self = this, $ret_or_1 = nil;
 
-          if ($truthy(self['$needs_wrapper?']())) {
-            return self.$compiler().$returns((function() {if ($truthy(($ret_or_1 = self.$true_body()))) {
-              return $ret_or_1
-            } else {
-              return self.$s("nil")
-            }; return nil; })())
+          if ($truthy(($ret_or_1 = self['$expr?']()))) {
+            return $ret_or_1
           } else {
-            return self.$true_body()
+            return self['$recv?']()
           }
-        }, $IfNode_truthy$4.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$falsy', $IfNode_falsy$5 = function $$falsy() {
-          var self = this, $ret_or_2 = nil;
+        $def(self, '$should_compile_as_simple_expression?', function $IfNode_should_compile_as_simple_expression$ques$4() {
+          var self = this, $ret_or_1 = nil, $ret_or_2 = nil;
 
-          if ($truthy(self['$needs_wrapper?']())) {
-            return self.$compiler().$returns((function() {if ($truthy(($ret_or_2 = self.$false_body()))) {
-              return $ret_or_2
-            } else {
-              return self.$s("nil")
-            }; return nil; })())
+          if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = self['$expects_expression?']())) ? (self['$simple?'](self.$true_body())) : ($ret_or_2))))) {
+            return self['$simple?'](self.$false_body())
           } else {
-            return self.$false_body()
+            return $ret_or_1
           }
-        }, $IfNode_falsy$5.$$arity = 0);
-        return (Opal.def(self, '$needs_wrapper?', $IfNode_needs_wrapper$ques$6 = function() {
-          var self = this, $ret_or_3 = nil;
+        }, 0);
+        
+        $def(self, '$compile_with_ternary', function $$compile_with_ternary() {
+          var self = this, truthy = nil, falsy = nil, $ret_or_1 = nil;
 
-          if ($truthy(($ret_or_3 = self['$expr?']()))) {
-            return $ret_or_3
+          
+          truthy = self.$true_body();
+          falsy = self.$false_body();
+          self.$push("(");
+          self.$push(self.$js_truthy(self.$test()), " ? ");
+          self.$push("(", self.$expr(($truthy(($ret_or_1 = truthy)) ? ($ret_or_1) : (self.$s("nil")))), ") : ");
+          if (($not(falsy) || ($eqeq(falsy.$type(), "if")))) {
+            self.$push(self.$expr(($truthy(($ret_or_1 = falsy)) ? ($ret_or_1) : (self.$s("nil")))))
           } else {
-            return self['$recv?']()
+            self.$push("(", self.$expr(($truthy(($ret_or_1 = falsy)) ? ($ret_or_1) : (self.$s("nil")))), ")")
+          };
+          return self.$push(")");
+        }, 0);
+        
+        $def(self, '$compile_with_binary_and', function $$compile_with_binary_and() {
+          var self = this, truthy = nil, $ret_or_1 = nil;
+
+          
+          if ($truthy(self.$sexp().$meta()['$[]']("do_js_truthy_on_true_body"))) {
+            truthy = self.$js_truthy(($truthy(($ret_or_1 = self.$true_body())) ? ($ret_or_1) : (self.$s("nil"))))
+          } else {
+            truthy = self.$expr(($truthy(($ret_or_1 = self.$true_body())) ? ($ret_or_1) : (self.$s("nil"))))
+          };
+          self.$push("(");
+          self.$push(self.$js_truthy(self.$test()), " && ");
+          self.$push("(", truthy, ")");
+          return self.$push(")");
+        }, 0);
+        
+        $def(self, '$compile_with_binary_or', function $$compile_with_binary_or() {
+          var self = this, falsy = nil, $ret_or_1 = nil;
+
+          
+          if ($truthy(self.$sexp().$meta()['$[]']("do_js_truthy_on_false_body"))) {
+            falsy = self.$js_truthy(($truthy(($ret_or_1 = self.$false_body())) ? ($ret_or_1) : (self.$s("nil"))))
+          } else {
+            falsy = self.$expr(($truthy(($ret_or_1 = self.$false_body())) ? ($ret_or_1) : (self.$s("nil"))))
+          };
+          self.$push("(");
+          self.$push(self.$js_truthy(self.$test()), " || ");
+          self.$push("(", falsy, ")");
+          return self.$push(")");
+        }, 0);
+        return $def(self, '$simple?', function $IfNode_simple$ques$5(body) {
+          var self = this, $ret_or_1 = nil, $ret_or_2 = nil;
+
+          if ($eqeqeq($$$($$('AST'), 'Node'), ($ret_or_1 = body))) {
+            if (($eqeqeq("return", ($ret_or_2 = body.$type())) || (($eqeqeq("js_return", $ret_or_2) || (($eqeqeq("break", $ret_or_2) || (($eqeqeq("next", $ret_or_2) || (($eqeqeq("redo", $ret_or_2) || ($eqeqeq("retry", $ret_or_2)))))))))))) {
+              return false
+            } else if ($eqeqeq("xstr", $ret_or_2)) {
+              return $$('XStringNode')['$single_line?']($$('XStringNode').$strip_empty_children(body.$children()))
+            } else {
+              return $send(body.$children(), 'all?', [], function $$6(i){var self = $$6.$$s == null ? this : $$6.$$s;
+
+                
+                
+                if (i == null) i = nil;;
+                return self['$simple?'](i);}, {$$arity: 1, $$s: self})
+            }
+          } else {
+            return true
           }
-        }, $IfNode_needs_wrapper$ques$6.$$arity = 0), nil) && 'needs_wrapper?';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 1);
+      })($nesting[0], $$('Base'), $nesting);
+      (function($base, $super) {
         var self = $klass($base, $super, 'IFlipFlop');
 
-        var $nesting = [self].concat($parent_nesting), $IFlipFlop_excl$7, $IFlipFlop_compile$8;
-
+        
         
         self.$handle("iflipflop");
         self.$children("from", "to");
         
-        Opal.def(self, '$excl', $IFlipFlop_excl$7 = function $$excl() {
-          var self = this;
-
+        $def(self, '$excl', function $$excl() {
+          
           return ""
-        }, $IFlipFlop_excl$7.$$arity = 0);
-        return (Opal.def(self, '$compile', $IFlipFlop_compile$8 = function $$compile() {
+        }, 0);
+        return $def(self, '$compile', function $$compile() {
           var self = this, fun_name = nil, ff = nil;
 
           
           self.$helper("truthy");
           fun_name = self.$top_scope().$new_temp();
           ff = "" + (fun_name) + ".$$ff";
-          self.$push("" + "(typeof " + (fun_name) + " === 'undefined' ? (" + (fun_name) + " = function(from, to){");
-          self.$push("" + "  if (typeof " + (ff) + " === 'undefined') " + (ff) + " = false;");
-          self.$push("" + "  var retval = " + (ff) + ";");
-          self.$push("" + "  if (!" + (ff) + ") {");
-          self.$push("" + "    " + (ff) + " = retval = $truthy(from());");
+          self.$push("(typeof " + (fun_name) + " === 'undefined' ? (" + (fun_name) + " = function(from, to){");
+          self.$push("  if (typeof " + (ff) + " === 'undefined') " + (ff) + " = false;");
+          self.$push("  var retval = " + (ff) + ";");
+          self.$push("  if (!" + (ff) + ") {");
+          self.$push("    " + (ff) + " = retval = $truthy(from());");
           self.$push("  }");
-          self.$push("" + "  " + (self.$excl()) + "if (" + (ff) + ") {");
-          self.$push("" + "    if ($truthy(to())) " + (ff) + " = false;");
+          self.$push("  " + (self.$excl()) + "if (" + (ff) + ") {");
+          self.$push("    if ($truthy(to())) " + (ff) + " = false;");
           self.$push("  }");
           self.$push("  return retval;");
-          self.$push("" + "}) : " + (fun_name) + ")(");
+          self.$push("}) : " + (fun_name) + ")(");
           self.$push("  function() { ", self.$stmt(self.$compiler().$returns(self.$from())), " },");
           self.$push("  function() { ", self.$stmt(self.$compiler().$returns(self.$to())), " }");
           return self.$push(")");
-        }, $IFlipFlop_compile$8.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      return (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('Base'));
+      return (function($base, $super) {
         var self = $klass($base, $super, 'EFlipFlop');
 
-        var $nesting = [self].concat($parent_nesting), $EFlipFlop_excl$9;
-
+        
         
         self.$handle("eflipflop");
-        return (Opal.def(self, '$excl', $EFlipFlop_excl$9 = function $$excl() {
-          var self = this;
-
+        return $def(self, '$excl', function $$excl() {
+          
           return "else "
-        }, $EFlipFlop_excl$9.$$arity = 0), nil) && 'excl';
-      })($nesting[0], $$($nesting, 'IFlipFlop'), $nesting);
+        }, 0);
+      })($nesting[0], $$('IFlipFlop'));
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/logic"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send;
-
-  Opal.add_stubs(['$require', '$handle', '$in_while?', '$push', '$iter?', '$scope', '$expr_or_nil', '$value', '$error', '$size', '$children', '$===', '$s', '$first', '$compile_while', '$compile_iter', '$[]', '$while_loop', '$stmt?', '$line', '$break_val', '$nil?', '$expr', '$[]=', '$-', '$helper', '$identity', '$==', '$empty_splat?', '$recv', '$>', '$!', '$lambda?', '$find_parent_def', '$expr?', '$def?', '$return_in_iter?', '$return_expr_in_def?', '$scope_to_catch_return', '$catch_return=', '$return_val', '$to_s']);
+Opal.modules["opal/nodes/logic"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $def = Opal.def, $eqeqeq = Opal.eqeqeq, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $rb_gt = Opal.rb_gt, $not = Opal.not;
+
+  Opal.add_stubs('require,handle,in_while?,push,iter?,scope,expr_or_nil,value,error,===,size,children,s,first,compile_while,compile_iter,[],while_loop,stmt?,line,break_val,nil?,expr,[]=,-,helper,identity,==,empty_splat?,recv,>,find_parent_def,!,lambda?,def?,expr?,return_in_iter?,return_expr_in_def?,scope_to_catch_return,catch_return=,return_val,to_s');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -36684,18 +33647,17 @@ Opal.modules["opal/nodes/logic"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
-      (function($base, $super, $parent_nesting) {
+      (function($base, $super) {
         var self = $klass($base, $super, 'NextNode');
 
-        var $nesting = [self].concat($parent_nesting), $NextNode_compile$1, $NextNode_value$2;
-
+        
         
         self.$handle("next");
         
-        Opal.def(self, '$compile', $NextNode_compile$1 = function $$compile() {
+        $def(self, '$compile', function $$compile() {
           var self = this;
 
           if ($truthy(self['$in_while?']())) {
@@ -36705,26 +33667,28 @@ Opal.modules["opal/nodes/logic"] = function(Opal) {
           } else {
             return self.$error("Invalid next")
           }
-        }, $NextNode_compile$1.$$arity = 0);
-        return (Opal.def(self, '$value', $NextNode_value$2 = function $$value() {
-          var self = this, $case = nil;
-
-          return (function() {$case = self.$children().$size();
-          if ((0)['$===']($case)) {return self.$s("nil")}
-          else if ((1)['$===']($case)) {return self.$children().$first()}
-          else {return $send(self, 's', ["array"].concat(Opal.to_a(self.$children())))}})()
-        }, $NextNode_value$2.$$arity = 0), nil) && 'value';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
-        var self = $klass($base, $super, 'BreakNode');
+        }, 0);
+        return $def(self, '$value', function $$value() {
+          var self = this, $ret_or_1 = nil;
 
-        var $nesting = [self].concat($parent_nesting), $BreakNode_compile$3, $BreakNode_compile_while$4, $BreakNode_compile_iter$5, $BreakNode_break_val$6;
+          if ($eqeqeq(0, ($ret_or_1 = self.$children().$size()))) {
+            return self.$s("nil")
+          } else if ($eqeqeq(1, $ret_or_1)) {
+            return self.$children().$first()
+          } else {
+            return $send(self, 's', ["array"].concat($to_a(self.$children())))
+          }
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
+        var self = $klass($base, $super, 'BreakNode');
 
         
+        
         self.$handle("break");
         self.$children("value");
         
-        Opal.def(self, '$compile', $BreakNode_compile$3 = function $$compile() {
+        $def(self, '$compile', function $$compile() {
           var self = this;
 
           if ($truthy(self['$in_while?']())) {
@@ -36734,9 +33698,9 @@ Opal.modules["opal/nodes/logic"] = function(Opal) {
           } else {
             return self.$error("void value expression: cannot use break outside of iter/while")
           }
-        }, $BreakNode_compile$3.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_while', $BreakNode_compile_while$4 = function $$compile_while() {
+        $def(self, '$compile_while', function $$compile_while() {
           var self = this;
 
           if ($truthy(self.$while_loop()['$[]']("closure"))) {
@@ -36744,19 +33708,18 @@ Opal.modules["opal/nodes/logic"] = function(Opal) {
           } else {
             return self.$push("break;")
           }
-        }, $BreakNode_compile_while$4.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_iter', $BreakNode_compile_iter$5 = function $$compile_iter() {
+        $def(self, '$compile_iter', function $$compile_iter() {
           var self = this;
 
           
-          if ($truthy(self['$stmt?']())) {
-          } else {
+          if (!$truthy(self['$stmt?']())) {
             self.$error("break must be used as a statement")
           };
           return self.$line("Opal.brk(", self.$break_val(), ", $brk)");
-        }, $BreakNode_compile_iter$5.$$arity = 0);
-        return (Opal.def(self, '$break_val', $BreakNode_break_val$6 = function $$break_val() {
+        }, 0);
+        return $def(self, '$break_val', function $$break_val() {
           var self = this;
 
           if ($truthy(self.$value()['$nil?']())) {
@@ -36764,17 +33727,16 @@ Opal.modules["opal/nodes/logic"] = function(Opal) {
           } else {
             return self.$expr(self.$value())
           }
-        }, $BreakNode_break_val$6.$$arity = 0), nil) && 'break_val';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'RedoNode');
 
-        var $nesting = [self].concat($parent_nesting), $RedoNode_compile$7, $RedoNode_compile_while$8, $RedoNode_compile_iter$9;
-
+        
         
         self.$handle("redo");
         
-        Opal.def(self, '$compile', $RedoNode_compile$7 = function $$compile() {
+        $def(self, '$compile', function $$compile() {
           var self = this;
 
           if ($truthy(self['$in_while?']())) {
@@ -36784,125 +33746,108 @@ Opal.modules["opal/nodes/logic"] = function(Opal) {
           } else {
             return self.$push("REDO()")
           }
-        }, $RedoNode_compile$7.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_while', $RedoNode_compile_while$8 = function $$compile_while() {
+        $def(self, '$compile_while', function $$compile_while() {
           var self = this, $writer = nil;
 
           
           
           $writer = ["use_redo", true];
-          $send(self.$while_loop(), '[]=', Opal.to_a($writer));
+          $send(self.$while_loop(), '[]=', $to_a($writer));
           $writer[$rb_minus($writer["length"], 1)];;
           return self.$push("" + (self.$while_loop()['$[]']("redo_var")) + " = true; continue;");
-        }, $RedoNode_compile_while$8.$$arity = 0);
-        return (Opal.def(self, '$compile_iter', $RedoNode_compile_iter$9 = function $$compile_iter() {
+        }, 0);
+        return $def(self, '$compile_iter', function $$compile_iter() {
           var self = this;
 
           
           self.$helper("slice");
-          return self.$push("" + "return " + (self.$scope().$identity()) + ".apply(null, $slice.call(arguments))");
-        }, $RedoNode_compile_iter$9.$$arity = 0), nil) && 'compile_iter';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+          return self.$push("return " + (self.$scope().$identity()) + ".apply(null, $slice.call(arguments))");
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'SplatNode');
 
-        var $nesting = [self].concat($parent_nesting), $SplatNode_empty_splat$ques$10, $SplatNode_compile$11;
-
+        
         
         self.$handle("splat");
         self.$children("value");
         
-        Opal.def(self, '$empty_splat?', $SplatNode_empty_splat$ques$10 = function() {
+        $def(self, '$empty_splat?', function $SplatNode_empty_splat$ques$1() {
           var self = this;
 
           return self.$value()['$=='](self.$s("array"))
-        }, $SplatNode_empty_splat$ques$10.$$arity = 0);
-        return (Opal.def(self, '$compile', $SplatNode_compile$11 = function $$compile() {
+        }, 0);
+        return $def(self, '$compile', function $$compile() {
           var self = this;
 
           if ($truthy(self['$empty_splat?']())) {
             return self.$push("[]")
           } else {
-            return self.$push("Opal.to_a(", self.$recv(self.$value()), ")")
+            
+            self.$helper("to_a");
+            return self.$push("$to_a(", self.$recv(self.$value()), ")");
           }
-        }, $SplatNode_compile$11.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'ReturnNode');
 
-        var $nesting = [self].concat($parent_nesting), $ReturnNode_return_val$12, $ReturnNode_return_in_iter$ques$13, $ReturnNode_return_expr_in_def$ques$14, $ReturnNode_scope_to_catch_return$15, $ReturnNode_compile$16;
-
+        
         
         self.$handle("return");
         self.$children("value");
         
-        Opal.def(self, '$return_val', $ReturnNode_return_val$12 = function $$return_val() {
+        $def(self, '$return_val', function $$return_val() {
           var self = this;
 
           if ($truthy(self.$value()['$nil?']())) {
             return self.$expr(self.$s("nil"))
           } else if ($truthy($rb_gt(self.$children().$size(), 1))) {
-            return self.$expr($send(self, 's', ["array"].concat(Opal.to_a(self.$children()))))
+            return self.$expr($send(self, 's', ["array"].concat($to_a(self.$children()))))
           } else {
             return self.$expr(self.$value())
           }
-        }, $ReturnNode_return_val$12.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$return_in_iter?', $ReturnNode_return_in_iter$ques$13 = function() {
-          var self = this, $ret_or_1 = nil, $ret_or_2 = nil, parent_def = nil;
+        $def(self, '$return_in_iter?', function $ReturnNode_return_in_iter$ques$2() {
+          var self = this, parent_def = nil;
 
-          if ($truthy((function() {if ($truthy(($ret_or_1 = (function() {if ($truthy(($ret_or_2 = self.$scope()['$iter?']()))) {
-            return self.$scope()['$lambda?']()['$!']()
-          } else {
-            return $ret_or_2
-          }; return nil; })()))) {
-            return (parent_def = self.$scope().$find_parent_def())
-          } else {
-            return $ret_or_1
-          }; return nil; })())) {
+          if ((($truthy(self.$scope()['$iter?']()) && ($not(self.$scope()['$lambda?']()))) && ($truthy((parent_def = self.$scope().$find_parent_def()))))) {
             return parent_def
           } else {
             return nil
           }
-        }, $ReturnNode_return_in_iter$ques$13.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$return_expr_in_def?', $ReturnNode_return_expr_in_def$ques$14 = function() {
-          var self = this, $ret_or_3 = nil, $ret_or_4 = nil;
+        $def(self, '$return_expr_in_def?', function $ReturnNode_return_expr_in_def$ques$3() {
+          var self = this;
 
-          if ($truthy((function() {if ($truthy(($ret_or_3 = self['$expr?']()))) {
-            
-            if ($truthy(($ret_or_4 = self.$scope()['$def?']()))) {
-              return $ret_or_4
-            } else {
-              return self.$scope()['$lambda?']()
-            };
-          } else {
-            return $ret_or_3
-          }; return nil; })())) {
+          if (($truthy(self['$expr?']()) && (($truthy(self.$scope()['$def?']()) || ($truthy(self.$scope()['$lambda?']())))))) {
             return self.$scope()
           } else {
             return nil
           }
-        }, $ReturnNode_return_expr_in_def$ques$14.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$scope_to_catch_return', $ReturnNode_scope_to_catch_return$15 = function $$scope_to_catch_return() {
-          var self = this, $ret_or_5 = nil;
+        $def(self, '$scope_to_catch_return', function $$scope_to_catch_return() {
+          var self = this, $ret_or_1 = nil;
 
-          if ($truthy(($ret_or_5 = self['$return_in_iter?']()))) {
-            return $ret_or_5
+          if ($truthy(($ret_or_1 = self['$return_in_iter?']()))) {
+            return $ret_or_1
           } else {
             return self['$return_expr_in_def?']()
           }
-        }, $ReturnNode_scope_to_catch_return$15.$$arity = 0);
-        return (Opal.def(self, '$compile', $ReturnNode_compile$16 = function $$compile() {
+        }, 0);
+        return $def(self, '$compile', function $$compile() {
           var self = this, def_scope = nil, $writer = nil;
 
           if ($truthy((def_scope = self.$scope_to_catch_return()))) {
             
             
             $writer = [true];
-            $send(def_scope, 'catch_return=', Opal.to_a($writer));
+            $send(def_scope, 'catch_return=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
             return self.$push("Opal.ret(", self.$return_val(), ")");
           } else if ($truthy(self['$stmt?']())) {
@@ -36910,67 +33855,57 @@ Opal.modules["opal/nodes/logic"] = function(Opal) {
           } else {
             return self.$error("void value expression: cannot return as an expression")
           }
-        }, $ReturnNode_compile$16.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'JSReturnNode');
 
-        var $nesting = [self].concat($parent_nesting), $JSReturnNode_compile$17;
-
+        
         
         self.$handle("js_return");
         self.$children("value");
-        return (Opal.def(self, '$compile', $JSReturnNode_compile$17 = function $$compile() {
+        return $def(self, '$compile', function $$compile() {
           var self = this;
 
           
           self.$push("return ");
           return self.$push(self.$expr(self.$value()));
-        }, $JSReturnNode_compile$17.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'JSTempNode');
 
-        var $nesting = [self].concat($parent_nesting), $JSTempNode_compile$18;
-
+        
         
         self.$handle("js_tmp");
         self.$children("value");
-        return (Opal.def(self, '$compile', $JSTempNode_compile$18 = function $$compile() {
+        return $def(self, '$compile', function $$compile() {
           var self = this;
 
           return self.$push(self.$value().$to_s())
-        }, $JSTempNode_compile$18.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      return (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('Base'));
+      return (function($base, $super) {
         var self = $klass($base, $super, 'BlockPassNode');
 
-        var $nesting = [self].concat($parent_nesting), $BlockPassNode_compile$19;
-
+        
         
         self.$handle("block_pass");
         self.$children("value");
-        return (Opal.def(self, '$compile', $BlockPassNode_compile$19 = function $$compile() {
+        return $def(self, '$compile', function $$compile() {
           var self = this;
 
           return self.$push(self.$expr(self.$s("send", self.$value(), "to_proc", self.$s("arglist"))))
-        }, $BlockPassNode_compile$19.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
+        }, 0);
+      })($nesting[0], $$('Base'));
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/definitions"] = function(Opal) {
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $range = Opal.range, $truthy = Opal.truthy, $slice = Opal.slice;
+Opal.modules["opal/nodes/definitions"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $def = Opal.def, $eqeqeq = Opal.eqeqeq, $range = Opal.range, $truthy = Opal.truthy, $rb_gt = Opal.rb_gt, $eqeq = Opal.eqeq, $to_a = Opal.to_a, $slice = Opal.slice, $rb_plus = Opal.rb_plus, $hash2 = Opal.hash2, $const_set = Opal.const_set;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$each', '$line', '$expr', '$type', '$new_name', '$===', '$helper', '$inspect', '$[]', '$to_s', '$first', '$old_name', '$push', '$error', '$empty?', '$stmt?', '$compile_children', '$simple_children?', '$compile_inline_children', '$>', '$size', '$wrap', '$==', '$returned_children', '$+', '$returns', '$compiler', '$s', '$process', '$freeze', '$none?', '$include?', '$map', '$each_with_index', '$reject', '$to_proc']);
+  Opal.add_stubs('require,handle,children,each,line,self,scope,expr,===,type,new_name,helper,inspect,[],to_s,first,old_name,push,error,empty?,stmt?,compile_children,simple_children?,compile_inline_children,>,size,wrap,==,returned_children,await_encountered,parent,+,returns,compiler,s,process,fragment,freeze,none?,include?,map,each_with_index,reject,to_proc');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -36981,68 +33916,68 @@ Opal.modules["opal/nodes/definitions"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
-      (function($base, $super, $parent_nesting) {
+      (function($base, $super) {
         var self = $klass($base, $super, 'UndefNode');
 
-        var $nesting = [self].concat($parent_nesting), $UndefNode_compile$1;
-
+        
         
         self.$handle("undef");
         self.$children("value");
-        return (Opal.def(self, '$compile', $UndefNode_compile$1 = function $$compile() {
-          var $$2, self = this;
+        return $def(self, '$compile', function $$compile() {
+          var self = this;
 
-          return $send(self.$children(), 'each', [], ($$2 = function(child){var self = $$2.$$s == null ? this : $$2.$$s;
+          return $send(self.$children(), 'each', [], function $$1(child){var self = $$1.$$s == null ? this : $$1.$$s;
 
             
             
-            if (child == null) {
-              child = nil;
-            };
-            return self.$line("Opal.udef(self, '$' + ", self.$expr(child), ");");}, $$2.$$s = self, $$2.$$arity = 1, $$2))
-        }, $UndefNode_compile$1.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+            if (child == null) child = nil;;
+            return self.$line("Opal.udef(" + (self.$scope().$self()) + ", '$' + ", self.$expr(child), ");");}, {$$arity: 1, $$s: self})
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'AliasNode');
 
-        var $nesting = [self].concat($parent_nesting), $AliasNode_compile$3;
-
+        
         
         self.$handle("alias");
         self.$children("new_name", "old_name");
-        return (Opal.def(self, '$compile', $AliasNode_compile$3 = function $$compile() {
-          var self = this, $case = nil, new_name_str = nil, old_name_str = nil;
-
-          return (function() {$case = self.$new_name().$type();
-          if ("gvar"['$===']($case)) {
-          self.$helper("alias_gvar");
-          new_name_str = self.$new_name().$children().$first().$to_s()['$[]']($range(1, -1, false)).$inspect();
-          old_name_str = self.$old_name().$children().$first().$to_s()['$[]']($range(1, -1, false)).$inspect();
-          return self.$push("$alias_gvar(", new_name_str, ", ", old_name_str, ")");}
-          else if ("dsym"['$===']($case) || "sym"['$===']($case)) {
-          self.$helper("alias");
-          return self.$push("$alias(self, ", self.$expr(self.$new_name()), ", ", self.$expr(self.$old_name()), ")");}
-          else {return self.$error("" + "Opal doesn't know yet how to alias with " + (self.$new_name().$type()))}})()
-        }, $AliasNode_compile$3.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
+        return $def(self, '$compile', function $$compile() {
+          var self = this, $ret_or_1 = nil, new_name_str = nil, old_name_str = nil;
+
+          if ($eqeqeq("gvar", ($ret_or_1 = self.$new_name().$type()))) {
+            
+            self.$helper("alias_gvar");
+            new_name_str = self.$new_name().$children().$first().$to_s()['$[]']($range(1, -1, false)).$inspect();
+            old_name_str = self.$old_name().$children().$first().$to_s()['$[]']($range(1, -1, false)).$inspect();
+            return self.$push("$alias_gvar(", new_name_str, ", ", old_name_str, ")");
+          } else if (($eqeqeq("dsym", $ret_or_1) || ($eqeqeq("sym", $ret_or_1)))) {
+            
+            self.$helper("alias");
+            return self.$push("$alias(" + (self.$scope().$self()) + ", ", self.$expr(self.$new_name()), ", ", self.$expr(self.$old_name()), ")");
+          } else {
+            return self.$error("Opal doesn't know yet how to alias with " + (self.$new_name().$type()))
+          }
+        }, 0);
+      })($nesting[0], $$('Base'));
       (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'BeginNode');
 
-        var $nesting = [self].concat($parent_nesting), $BeginNode_compile$4, $BeginNode_returned_children$5, $BeginNode_compile_children$6, $BeginNode_simple_children$ques$8, $BeginNode_compile_inline_children$10;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.level = self.$$prototype.returned_children = nil;
+        $proto.level = $proto.returned_children = nil;
         
         self.$handle("begin");
         
-        Opal.def(self, '$compile', $BeginNode_compile$4 = function $$compile() {
+        $def(self, '$compile', function $$compile() {
           var self = this;
 
           
           if ($truthy(self.$children()['$empty?']())) {
-            return self.$push("nil")};
+            return self.$push("nil")
+          };
           if ($truthy(self['$stmt?']())) {
             return self.$compile_children(self.$children(), self.level)
           } else if ($truthy(self['$simple_children?']())) {
@@ -37053,106 +33988,83 @@ Opal.modules["opal/nodes/definitions"] = function(Opal) {
             } else {
               return nil
             };
-          } else if (self.$children().$size()['$=='](1)) {
+          } else if ($eqeq(self.$children().$size(), 1)) {
             return self.$compile_inline_children(self.$returned_children(), self.level)
           } else {
             
             self.$compile_children(self.$returned_children(), self.level);
-            return self.$wrap("(function() {", "})()");
+            if ($truthy(self.$scope().$parent().$await_encountered())) {
+              return self.$wrap("(await (async function() {", "})())")
+            } else {
+              return self.$wrap("(function() {", "})()")
+            };
           };
-        }, $BeginNode_compile$4.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$returned_children', $BeginNode_returned_children$5 = function $$returned_children() {
+        $def(self, '$returned_children', function $$returned_children() {
           var $a, $b, self = this, $ret_or_1 = nil, rest = nil, last_child = nil;
 
-          return (self.returned_children = (function() {if ($truthy(($ret_or_1 = self.returned_children))) {
-            return $ret_or_1
-          } else {
-            
-            $a = [].concat(Opal.to_a(self.$children())), $b = $a.length - 1, $b = ($b < 0) ? 0 : $b, (rest = $slice.call($a, 0, $b)), (last_child = ($a[$b] == null ? nil : $a[$b])), $a;
-            if ($truthy(last_child)) {
-              return $rb_plus(rest, [self.$compiler().$returns(last_child)])
-            } else {
-              return [self.$s("nil")]
-            };
-          }; return nil; })())
-        }, $BeginNode_returned_children$5.$$arity = 0);
+          return (self.returned_children = ($truthy(($ret_or_1 = self.returned_children)) ? ($ret_or_1) : (($a = [].concat($to_a(self.$children())), $b = $a.length - 1, $b = ($b < 0) ? 0 : $b, (rest = $slice.call($a, 0, $b)), (last_child = ($a[$b] == null ? nil : $a[$b])), $a, ($truthy(last_child) ? ($rb_plus(rest, [self.$compiler().$returns(last_child)])) : ([self.$s("nil")]))))))
+        }, 0);
         
-        Opal.def(self, '$compile_children', $BeginNode_compile_children$6 = function $$compile_children(children, level) {
-          var $$7, self = this;
+        $def(self, '$compile_children', function $$compile_children(children, level) {
+          var self = this;
 
-          return $send(children, 'each', [], ($$7 = function(child){var self = $$7.$$s == null ? this : $$7.$$s;
+          return $send(children, 'each', [], function $$2(child){var self = $$2.$$s == null ? this : $$2.$$s;
 
             
             
-            if (child == null) {
-              child = nil;
-            };
-            return self.$line(self.$process(child, level), ";");}, $$7.$$s = self, $$7.$$arity = 1, $$7))
-        }, $BeginNode_compile_children$6.$$arity = 2);
-        Opal.const_set($nesting[0], 'COMPLEX_CHILDREN', ["while", "while_post", "until", "until_post", "js_return"].$freeze());
+            if (child == null) child = nil;;
+            return self.$line(self.$process(child, level), self.$fragment(";", $hash2(["loc"], {"loc": false})));}, {$$arity: 1, $$s: self})
+        }, 2);
+        $const_set($nesting[0], 'COMPLEX_CHILDREN', ["while", "while_post", "until", "until_post", "js_return"].$freeze());
         
-        Opal.def(self, '$simple_children?', $BeginNode_simple_children$ques$8 = function() {
-          var $$9, self = this;
-
-          return $send(self.$children(), 'none?', [], ($$9 = function(child){var self = $$9.$$s == null ? this : $$9.$$s;
+        $def(self, '$simple_children?', function $BeginNode_simple_children$ques$3() {
+          var self = this;
 
+          return $send(self.$children(), 'none?', [], function $$4(child){
             
             
-            if (child == null) {
-              child = nil;
-            };
-            return $$($nesting, 'COMPLEX_CHILDREN')['$include?'](child.$type());}, $$9.$$s = self, $$9.$$arity = 1, $$9))
-        }, $BeginNode_simple_children$ques$8.$$arity = 0);
-        return (Opal.def(self, '$compile_inline_children', $BeginNode_compile_inline_children$10 = function $$compile_inline_children(children, level) {
-          var $$11, $$12, self = this, processed_children = nil;
+            if (child == null) child = nil;;
+            return $$('COMPLEX_CHILDREN')['$include?'](child.$type());}, 1)
+        }, 0);
+        return $def(self, '$compile_inline_children', function $$compile_inline_children(children, level) {
+          var self = this, processed_children = nil;
 
           
-          processed_children = $send(children, 'map', [], ($$11 = function(child){var self = $$11.$$s == null ? this : $$11.$$s;
+          processed_children = $send(children, 'map', [], function $$5(child){var self = $$5.$$s == null ? this : $$5.$$s;
 
             
             
-            if (child == null) {
-              child = nil;
-            };
-            return self.$process(child, level);}, $$11.$$s = self, $$11.$$arity = 1, $$11));
-          return $send($send(processed_children, 'reject', [], "empty?".$to_proc()), 'each_with_index', [], ($$12 = function(child, idx){var self = $$12.$$s == null ? this : $$12.$$s;
+            if (child == null) child = nil;;
+            return self.$process(child, level);}, {$$arity: 1, $$s: self});
+          return $send($send(processed_children, 'reject', [], "empty?".$to_proc()), 'each_with_index', [], function $$6(child, idx){var self = $$6.$$s == null ? this : $$6.$$s;
 
             
             
-            if (child == null) {
-              child = nil;
-            };
+            if (child == null) child = nil;;
             
-            if (idx == null) {
-              idx = nil;
-            };
-            if (idx['$=='](0)) {
-            } else {
-              self.$push(", ")
+            if (idx == null) idx = nil;;
+            if (!$eqeq(idx, 0)) {
+              self.$push(self.$fragment(", ", $hash2(["loc"], {"loc": false})))
             };
-            return self.$push(child);}, $$12.$$s = self, $$12.$$arity = 2, $$12));
-        }, $BeginNode_compile_inline_children$10.$$arity = 2), nil) && 'compile_inline_children';
-      })($nesting[0], $$($nesting, 'ScopeNode'), $nesting);
-      return (function($base, $super, $parent_nesting) {
+            return self.$push(child);}, {$$arity: 2, $$s: self});
+        }, 2);
+      })($nesting[0], $$('ScopeNode'), $nesting);
+      return (function($base, $super) {
         var self = $klass($base, $super, 'KwBeginNode');
 
-        var $nesting = [self].concat($parent_nesting);
-
+        
         return self.$handle("kwbegin")
-      })($nesting[0], $$($nesting, 'BeginNode'), $nesting);
+      })($nesting[0], $$('BeginNode'));
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/yield"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send;
+Opal.modules["opal/nodes/yield"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$find_yielding_scope', '$uses_block!', '$block_name', '$block_name=', '$-', '$yields_single_arg?', '$children', '$push', '$expr', '$first', '$wrap', '$s', '$uses_splat?', '$scope', '$def?', '$parent', '$!', '$==', '$size', '$any?', '$type', '$handle', '$compile_call']);
+  Opal.add_stubs('require,find_yielding_scope,uses_block!,block_name,block_name=,-,yields_single_arg?,children,push,expr,first,wrap,s,uses_splat?,scope,def?,parent,!,==,size,any?,type,handle,compile_call');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -37163,17 +34075,16 @@ Opal.modules["opal/nodes/yield"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
-      (function($base, $super, $parent_nesting) {
+      (function($base, $super) {
         var self = $klass($base, $super, 'BaseYieldNode');
 
-        var $nesting = [self].concat($parent_nesting), $BaseYieldNode_compile_call$1, $BaseYieldNode_find_yielding_scope$2, $BaseYieldNode_yields_single_arg$ques$3, $BaseYieldNode_uses_splat$ques$4;
-
         
         
-        Opal.def(self, '$compile_call', $BaseYieldNode_compile_call$1 = function $$compile_call() {
+        
+        $def(self, '$compile_call', function $$compile_call() {
           var self = this, yielding_scope = nil, $ret_or_1 = nil, $writer = nil, block_name = nil;
 
           
@@ -37184,105 +34095,92 @@ Opal.modules["opal/nodes/yield"] = function(Opal) {
           } else {
             
             $writer = ["$yield"];
-            $send(yielding_scope, 'block_name=', Opal.to_a($writer));
+            $send(yielding_scope, 'block_name=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];
           };
           block_name = yielding_scope.$block_name();
           if ($truthy(self['$yields_single_arg?'](self.$children()))) {
             
             self.$push(self.$expr(self.$children().$first()));
-            return self.$wrap("" + "Opal.yield1(" + (block_name) + ", ", ")");
+            return self.$wrap("Opal.yield1(" + (block_name) + ", ", ")");
           } else {
             
-            self.$push(self.$expr($send(self, 's', ["arglist"].concat(Opal.to_a(self.$children())))));
+            self.$push(self.$expr($send(self, 's', ["arglist"].concat($to_a(self.$children())))));
             if ($truthy(self['$uses_splat?'](self.$children()))) {
-              return self.$wrap("" + "Opal.yieldX(" + (block_name) + ", ", ")")
+              return self.$wrap("Opal.yieldX(" + (block_name) + ", ", ")")
             } else {
-              return self.$wrap("" + "Opal.yieldX(" + (block_name) + ", [", "])")
+              return self.$wrap("Opal.yieldX(" + (block_name) + ", [", "])")
             };
           };
-        }, $BaseYieldNode_compile_call$1.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$find_yielding_scope', $BaseYieldNode_find_yielding_scope$2 = function $$find_yielding_scope() {
-          var $a, self = this, working = nil, $ret_or_2 = nil;
+        $def(self, '$find_yielding_scope', function $$find_yielding_scope() {
+          var $a, self = this, working = nil;
 
           
           working = self.$scope();
           while ($truthy(working)) {
             
-            if ($truthy((function() {if ($truthy(($ret_or_2 = working.$block_name()))) {
-              return $ret_or_2
-            } else {
-              return working['$def?']()
-            }; return nil; })())) {
-              break;};
+            if (($truthy(working.$block_name()) || ($truthy(working['$def?']())))) {
+              break;
+            };
             working = working.$parent();
           };
           return working;
-        }, $BaseYieldNode_find_yielding_scope$2.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$yields_single_arg?', $BaseYieldNode_yields_single_arg$ques$3 = function(children) {
-          var self = this, $ret_or_3 = nil;
+        $def(self, '$yields_single_arg?', function $BaseYieldNode_yields_single_arg$ques$1(children) {
+          var self = this, $ret_or_1 = nil;
 
-          if ($truthy(($ret_or_3 = self['$uses_splat?'](children)['$!']()))) {
+          if ($truthy(($ret_or_1 = self['$uses_splat?'](children)['$!']()))) {
             return children.$size()['$=='](1)
           } else {
-            return $ret_or_3
+            return $ret_or_1
           }
-        }, $BaseYieldNode_yields_single_arg$ques$3.$$arity = 1);
-        return (Opal.def(self, '$uses_splat?', $BaseYieldNode_uses_splat$ques$4 = function(children) {
-          var $$5, self = this;
-
-          return $send(children, 'any?', [], ($$5 = function(child){var self = $$5.$$s == null ? this : $$5.$$s;
-
+        }, 1);
+        return $def(self, '$uses_splat?', function $BaseYieldNode_uses_splat$ques$2(children) {
+          
+          return $send(children, 'any?', [], function $$3(child){
             
             
-            if (child == null) {
-              child = nil;
-            };
-            return child.$type()['$==']("splat");}, $$5.$$s = self, $$5.$$arity = 1, $$5))
-        }, $BaseYieldNode_uses_splat$ques$4.$$arity = 1), nil) && 'uses_splat?';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+            if (child == null) child = nil;;
+            return child.$type()['$==']("splat");}, 1)
+        }, 1);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'YieldNode');
 
-        var $nesting = [self].concat($parent_nesting), $YieldNode_compile$6;
-
+        
         
         self.$handle("yield");
-        return (Opal.def(self, '$compile', $YieldNode_compile$6 = function $$compile() {
+        return $def(self, '$compile', function $$compile() {
           var self = this;
 
           return self.$compile_call()
-        }, $YieldNode_compile$6.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'BaseYieldNode'), $nesting);
-      return (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('BaseYieldNode'));
+      return (function($base, $super) {
         var self = $klass($base, $super, 'ReturnableYieldNode');
 
-        var $nesting = [self].concat($parent_nesting), $ReturnableYieldNode_compile$7;
-
+        
         
         self.$handle("returnable_yield");
-        return (Opal.def(self, '$compile', $ReturnableYieldNode_compile$7 = function $$compile() {
+        return $def(self, '$compile', function $$compile() {
           var self = this;
 
           
           self.$compile_call();
           return self.$wrap("return ", ";");
-        }, $ReturnableYieldNode_compile$7.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'BaseYieldNode'), $nesting);
+        }, 0);
+      })($nesting[0], $$('BaseYieldNode'));
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/rescue"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy, $range = Opal.range;
+Opal.modules["opal/nodes/rescue"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy, $def = Opal.def, $range = Opal.range, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $eqeq = Opal.eqeq;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$push', '$in_ensure', '$line', '$stmt', '$body_sexp', '$indent', '$has_rescue_else?', '$unshift', '$rescue_else_code', '$process', '$compiler', '$ensr_sexp', '$wrap_in_closure?', '$wrap', '$returns', '$begn', '$ensr', '$s', '$recv?', '$expr?', '$rescue_else_sexp', '$scope', '$stmt?', '$detect', '$[]', '$!=', '$type', '$rescue_else_sexp=', '$-', '$handle_rescue_else_manually?', '$in_rescue', '$body_code', '$each_with_index', '$==', '$retry_id', '$nil?', '$body', '$!', '$in_ensure?', '$gen_retry_id', '$attr_reader', '$expr', '$klasses', '$lvar', '$updated', '$in_resbody', '$rescue_body', '$klasses_sexp', '$in_resbody?', '$error', '$current_rescue']);
+  Opal.add_stubs('require,handle,children,push,in_ensure,line,stmt,body_sexp,indent,has_rescue_else?,unshift,rescue_else_code,process,compiler,ensr_sexp,wrap_in_closure?,await_encountered,scope,wrap,returns,begn,ensr,s,recv?,expr?,rescue_else_sexp,stmt?,detect,[],!=,type,rescue_else_sexp=,-,handle_rescue_else_manually?,in_rescue,body_code,each_with_index,==,retry_id,body,nil?,!,in_ensure?,gen_retry_id,attr_reader,expr,klasses,lvar,updated,in_resbody,rescue_body,klasses_sexp,in_resbody?,error,current_rescue');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -37293,28 +34191,27 @@ Opal.modules["opal/nodes/rescue"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
-      (function($base, $super, $parent_nesting) {
+      (function($base, $super) {
         var self = $klass($base, $super, 'EnsureNode');
 
-        var $nesting = [self].concat($parent_nesting), $EnsureNode_compile$1, $EnsureNode_body_sexp$6, $EnsureNode_ensr_sexp$7, $EnsureNode_wrap_in_closure$ques$8, $EnsureNode_rescue_else_code$9;
-
+        
         
         self.$handle("ensure");
         self.$children("begn", "ensr");
         
-        Opal.def(self, '$compile', $EnsureNode_compile$1 = function $$compile() {
-          var $$2, $$3, self = this;
+        $def(self, '$compile', function $$compile() {
+          var self = this;
 
           
           self.$push("try {");
-          $send(self, 'in_ensure', [], ($$2 = function(){var self = $$2.$$s == null ? this : $$2.$$s;
+          $send(self, 'in_ensure', [], function $$1(){var self = $$1.$$s == null ? this : $$1.$$s;
 
-            return self.$line(self.$stmt(self.$body_sexp()))}, $$2.$$s = self, $$2.$$arity = 0, $$2));
+            return self.$line(self.$stmt(self.$body_sexp()))}, {$$arity: 0, $$s: self});
           self.$line("} finally {");
-          $send(self, 'indent', [], ($$3 = function(){var self = $$3.$$s == null ? this : $$3.$$s, $$4;
+          $send(self, 'indent', [], function $$2(){var self = $$2.$$s == null ? this : $$2.$$s;
             if (self.level == null) self.level = nil;
 
             if ($truthy(self['$has_rescue_else?']())) {
@@ -37322,29 +34219,33 @@ Opal.modules["opal/nodes/rescue"] = function(Opal) {
               self.$unshift("var $no_errors = true; ");
               self.$line("var $rescue_else_result;");
               self.$line("if ($no_errors) { ");
-              $send(self, 'indent', [], ($$4 = function(){var self = $$4.$$s == null ? this : $$4.$$s, $$5;
+              $send(self, 'indent', [], function $$3(){var self = $$3.$$s == null ? this : $$3.$$s;
 
                 
                 self.$line("$rescue_else_result = (function() {");
-                $send(self, 'indent', [], ($$5 = function(){var self = $$5.$$s == null ? this : $$5.$$s;
+                $send(self, 'indent', [], function $$4(){var self = $$4.$$s == null ? this : $$4.$$s;
 
-                  return self.$line(self.$stmt(self.$rescue_else_code()))}, $$5.$$s = self, $$5.$$arity = 0, $$5));
-                return self.$line("})();");}, $$4.$$s = self, $$4.$$arity = 0, $$4));
+                  return self.$line(self.$stmt(self.$rescue_else_code()))}, {$$arity: 0, $$s: self});
+                return self.$line("})();");}, {$$arity: 0, $$s: self});
               self.$line("}");
               self.$line(self.$compiler().$process(self.$ensr_sexp(), self.level));
               return self.$line("if ($no_errors) { return $rescue_else_result; }");
             } else {
               return self.$line(self.$compiler().$process(self.$ensr_sexp(), self.level))
-            }}, $$3.$$s = self, $$3.$$arity = 0, $$3));
+            }}, {$$arity: 0, $$s: self});
           self.$line("}");
           if ($truthy(self['$wrap_in_closure?']())) {
-            return self.$wrap("(function() { ", "; })()")
+            if ($truthy(self.$scope().$await_encountered())) {
+              return self.$wrap("(await (async function() { ", "; })())")
+            } else {
+              return self.$wrap("(function() { ", "; })()")
+            }
           } else {
             return nil
           };
-        }, $EnsureNode_compile$1.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$body_sexp', $EnsureNode_body_sexp$6 = function $$body_sexp() {
+        $def(self, '$body_sexp', function $$body_sexp() {
           var self = this;
 
           if ($truthy(self['$wrap_in_closure?']())) {
@@ -37352,9 +34253,9 @@ Opal.modules["opal/nodes/rescue"] = function(Opal) {
           } else {
             return self.$begn()
           }
-        }, $EnsureNode_body_sexp$6.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$ensr_sexp', $EnsureNode_ensr_sexp$7 = function $$ensr_sexp() {
+        $def(self, '$ensr_sexp', function $$ensr_sexp() {
           var self = this, $ret_or_1 = nil;
 
           if ($truthy(($ret_or_1 = self.$ensr()))) {
@@ -37362,462 +34263,232 @@ Opal.modules["opal/nodes/rescue"] = function(Opal) {
           } else {
             return self.$s("nil")
           }
-        }, $EnsureNode_ensr_sexp$7.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$wrap_in_closure?', $EnsureNode_wrap_in_closure$ques$8 = function() {
-          var self = this, $ret_or_2 = nil, $ret_or_3 = nil;
+        $def(self, '$wrap_in_closure?', function $EnsureNode_wrap_in_closure$ques$5() {
+          var self = this, $ret_or_1 = nil, $ret_or_2 = nil;
 
-          if ($truthy(($ret_or_2 = (function() {if ($truthy(($ret_or_3 = self['$recv?']()))) {
-            return $ret_or_3
-          } else {
-            return self['$expr?']()
-          }; return nil; })()))) {
-            return $ret_or_2
+          if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = self['$recv?']())) ? ($ret_or_2) : (self['$expr?']()))))) {
+            return $ret_or_1
           } else {
             return self['$has_rescue_else?']()
           }
-        }, $EnsureNode_wrap_in_closure$ques$8.$$arity = 0);
-        return (Opal.def(self, '$rescue_else_code', $EnsureNode_rescue_else_code$9 = function $$rescue_else_code() {
+        }, 0);
+        return $def(self, '$rescue_else_code', function $$rescue_else_code() {
           var self = this, rescue_else_code = nil;
 
           
           rescue_else_code = self.$scope().$rescue_else_sexp();
-          if ($truthy(self['$stmt?']())) {
-          } else {
+          if (!$truthy(self['$stmt?']())) {
             rescue_else_code = self.$compiler().$returns(rescue_else_code)
           };
           return rescue_else_code;
-        }, $EnsureNode_rescue_else_code$9.$$arity = 0), nil) && 'rescue_else_code';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'RescueNode');
 
-        var $nesting = [self].concat($parent_nesting), $RescueNode_compile$10, $RescueNode_body_code$18, $RescueNode_rescue_else_code$19, $RescueNode_handle_rescue_else_manually$ques$20, $RescueNode_gen_retry_id$21;
+        var $proto = self.$$prototype;
 
-        self.$$prototype.retry_id = nil;
+        $proto.retry_id = nil;
         
         self.$handle("rescue");
         self.$children("body");
         
-        Opal.def(self, '$compile', $RescueNode_compile$10 = function $$compile() {
-          var $$11, $$12, self = this, $writer = nil, _has_rescue_handlers = nil, $ret_or_6 = nil;
+        $def(self, '$compile', function $$compile() {
+          var self = this, $writer = nil, _has_rescue_handlers = nil;
 
           
           
-          $writer = [$send(self.$children()['$[]']($range(1, -1, false)), 'detect', [], ($$11 = function(sexp){var self = $$11.$$s == null ? this : $$11.$$s, $ret_or_4 = nil;
+          $writer = [$send(self.$children()['$[]']($range(1, -1, false)), 'detect', [], function $$6(sexp){var $ret_or_1 = nil;
 
             
             
-            if (sexp == null) {
-              sexp = nil;
-            };
-            if ($truthy(($ret_or_4 = sexp))) {
+            if (sexp == null) sexp = nil;;
+            if ($truthy(($ret_or_1 = sexp))) {
               return sexp.$type()['$!=']("resbody")
             } else {
-              return $ret_or_4
-            };}, $$11.$$s = self, $$11.$$arity = 1, $$11))];
-          $send(self.$scope(), 'rescue_else_sexp=', Opal.to_a($writer));
+              return $ret_or_1
+            };}, 1)];
+          $send(self.$scope(), 'rescue_else_sexp=', $to_a($writer));
           $writer[$rb_minus($writer["length"], 1)];;
           _has_rescue_handlers = false;
           if ($truthy(self['$handle_rescue_else_manually?']())) {
-            self.$line("var $no_errors = true;")};
-          $send(self, 'in_rescue', [self], ($$12 = function(){var self = $$12.$$s == null ? this : $$12.$$s, $$13, $$14, $$16;
+            self.$line("var $no_errors = true;")
+          };
+          $send(self, 'in_rescue', [self], function $$7(){var self = $$7.$$s == null ? this : $$7.$$s;
 
             
             self.$push("try {");
-            $send(self, 'indent', [], ($$13 = function(){var self = $$13.$$s == null ? this : $$13.$$s;
+            $send(self, 'indent', [], function $$8(){var self = $$8.$$s == null ? this : $$8.$$s;
 
-              return self.$line(self.$stmt(self.$body_code()))}, $$13.$$s = self, $$13.$$arity = 0, $$13));
+              return self.$line(self.$stmt(self.$body_code()))}, {$$arity: 0, $$s: self});
             self.$line("} catch ($err) {");
-            $send(self, 'indent', [], ($$14 = function(){var self = $$14.$$s == null ? this : $$14.$$s, $$15;
+            $send(self, 'indent', [], function $$9(){var self = $$9.$$s == null ? this : $$9.$$s;
 
               
               if ($truthy(self['$has_rescue_else?']())) {
-                self.$line("$no_errors = false;")};
-              $send(self.$children()['$[]']($range(1, -1, false)), 'each_with_index', [], ($$15 = function(child, idx){var self = $$15.$$s == null ? this : $$15.$$s, $ret_or_5 = nil;
+                self.$line("$no_errors = false;")
+              };
+              $send(self.$children()['$[]']($range(1, -1, false)), 'each_with_index', [], function $$10(child, idx){var self = $$10.$$s == null ? this : $$10.$$s;
                 if (self.level == null) self.level = nil;
 
                 
                 
-                if (child == null) {
-                  child = nil;
-                };
+                if (child == null) child = nil;;
                 
-                if (idx == null) {
-                  idx = nil;
-                };
-                if ($truthy((function() {if ($truthy(($ret_or_5 = child))) {
-                  return child.$type()['$==']("resbody")
-                } else {
-                  return $ret_or_5
-                }; return nil; })())) {
-                } else {
+                if (idx == null) idx = nil;;
+                if (!($truthy(child) && ($eqeq(child.$type(), "resbody")))) {
                   return nil;
                 };
                 _has_rescue_handlers = true;
-                if (idx['$=='](0)) {
-                } else {
+                if (!$eqeq(idx, 0)) {
                   self.$push(" else ")
                 };
-                return self.$line(self.$process(child, self.level));}, $$15.$$s = self, $$15.$$arity = 2, $$15));
-              return self.$push(" else { throw $err; }");}, $$14.$$s = self, $$14.$$arity = 0, $$14));
+                return self.$line(self.$process(child, self.level));}, {$$arity: 2, $$s: self});
+              return self.$push(" else { throw $err; }");}, {$$arity: 0, $$s: self});
             self.$line("}");
             if ($truthy(self['$handle_rescue_else_manually?']())) {
               
               self.$push("finally {");
-              $send(self, 'indent', [], ($$16 = function(){var self = $$16.$$s == null ? this : $$16.$$s, $$17;
+              $send(self, 'indent', [], function $$11(){var self = $$11.$$s == null ? this : $$11.$$s;
 
                 
                 self.$line("if ($no_errors) { ");
-                $send(self, 'indent', [], ($$17 = function(){var self = $$17.$$s == null ? this : $$17.$$s;
+                $send(self, 'indent', [], function $$12(){var self = $$12.$$s == null ? this : $$12.$$s;
 
-                  return self.$line(self.$stmt(self.$rescue_else_code()))}, $$17.$$s = self, $$17.$$arity = 0, $$17));
-                return self.$line("}");}, $$16.$$s = self, $$16.$$arity = 0, $$16));
-              self.$push("}");};
+                  return self.$line(self.$stmt(self.$rescue_else_code()))}, {$$arity: 0, $$s: self});
+                return self.$line("}");}, {$$arity: 0, $$s: self});
+              self.$push("}");
+            };
             if ($truthy(self.$retry_id())) {
               return self.$wrap("" + (self.$retry_id()) + ": do { ", " break; } while(1)")
             } else {
               return nil
-            };}, $$12.$$s = self, $$12.$$arity = 0, $$12));
-          if ($truthy((function() {if ($truthy(($ret_or_6 = self['$expr?']()))) {
-            return $ret_or_6
-          } else {
-            return self['$recv?']()
-          }; return nil; })())) {
-            return self.$wrap("(function() { ", "})()")
+            };}, {$$arity: 0, $$s: self});
+          if (($truthy(self['$expr?']()) || ($truthy(self['$recv?']())))) {
+            if ($truthy(self.$scope().$await_encountered())) {
+              return self.$wrap("(await (async function() { ", "})())")
+            } else {
+              return self.$wrap("(function() { ", "})()")
+            }
           } else {
             return nil
           };
-        }, $RescueNode_compile$10.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$body_code', $RescueNode_body_code$18 = function $$body_code() {
-          var self = this, body_code = nil, $ret_or_7 = nil;
+        $def(self, '$body_code', function $$body_code() {
+          var self = this, body_code = nil;
 
           
-          body_code = (function() {if ($truthy((function() {if ($truthy(($ret_or_7 = self.$body()['$nil?']()))) {
-            return $ret_or_7
-          } else {
-            return self.$body().$type()['$==']("resbody")
-          }; return nil; })())) {
-            return self.$s("nil")
-          } else {
-            return self.$body()
-          }; return nil; })();
-          if ($truthy(self['$stmt?']())) {
-          } else {
+          body_code = (($truthy(self.$body()['$nil?']()) || ($eqeq(self.$body().$type(), "resbody"))) ? (self.$s("nil")) : (self.$body()));
+          if (!$truthy(self['$stmt?']())) {
             body_code = self.$compiler().$returns(body_code)
           };
           return body_code;
-        }, $RescueNode_body_code$18.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$rescue_else_code', $RescueNode_rescue_else_code$19 = function $$rescue_else_code() {
+        $def(self, '$rescue_else_code', function $$rescue_else_code() {
           var self = this, rescue_else_code = nil;
 
           
           rescue_else_code = self.$scope().$rescue_else_sexp();
-          if ($truthy(self['$stmt?']())) {
-          } else {
+          if (!$truthy(self['$stmt?']())) {
             rescue_else_code = self.$compiler().$returns(rescue_else_code)
           };
           return rescue_else_code;
-        }, $RescueNode_rescue_else_code$19.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$handle_rescue_else_manually?', $RescueNode_handle_rescue_else_manually$ques$20 = function() {
-          var self = this, $ret_or_8 = nil;
+        $def(self, '$handle_rescue_else_manually?', function $RescueNode_handle_rescue_else_manually$ques$13() {
+          var self = this, $ret_or_1 = nil;
 
-          if ($truthy(($ret_or_8 = self['$in_ensure?']()['$!']()))) {
+          if ($truthy(($ret_or_1 = self['$in_ensure?']()['$!']()))) {
             return self['$has_rescue_else?']()
           } else {
-            return $ret_or_8
+            return $ret_or_1
           }
-        }, $RescueNode_handle_rescue_else_manually$ques$20.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$gen_retry_id', $RescueNode_gen_retry_id$21 = function $$gen_retry_id() {
-          var self = this, $ret_or_9 = nil;
+        $def(self, '$gen_retry_id', function $$gen_retry_id() {
+          var self = this, $ret_or_1 = nil;
 
-          return (self.retry_id = (function() {if ($truthy(($ret_or_9 = self.retry_id))) {
-            return $ret_or_9
-          } else {
-            return self.$scope().$gen_retry_id()
-          }; return nil; })())
-        }, $RescueNode_gen_retry_id$21.$$arity = 0);
+          return (self.retry_id = ($truthy(($ret_or_1 = self.retry_id)) ? ($ret_or_1) : (self.$scope().$gen_retry_id())))
+        }, 0);
         return self.$attr_reader("retry_id");
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'ResBodyNode');
 
-        var $nesting = [self].concat($parent_nesting), $ResBodyNode_compile$22, $ResBodyNode_klasses$26, $ResBodyNode_rescue_body$27;
-
+        
         
         self.$handle("resbody");
         self.$children("klasses_sexp", "lvar", "body");
         
-        Opal.def(self, '$compile', $ResBodyNode_compile$22 = function $$compile() {
-          var $$23, self = this;
+        $def(self, '$compile', function $$compile() {
+          var self = this;
 
           
           self.$push("if (Opal.rescue($err, ", self.$expr(self.$klasses()), ")) {");
-          $send(self, 'indent', [], ($$23 = function(){var self = $$23.$$s == null ? this : $$23.$$s, $$24;
+          $send(self, 'indent', [], function $$14(){var self = $$14.$$s == null ? this : $$14.$$s;
 
             
             if ($truthy(self.$lvar())) {
-              self.$push(self.$expr(self.$lvar().$updated(nil, [].concat(Opal.to_a(self.$lvar().$children())).concat([self.$s("js_tmp", "$err")]))))};
+              self.$push(self.$expr(self.$lvar().$updated(nil, [].concat($to_a(self.$lvar().$children())).concat([self.$s("js_tmp", "$err")]))))
+            };
             self.$line("try {");
-            $send(self, 'indent', [], ($$24 = function(){var self = $$24.$$s == null ? this : $$24.$$s, $$25;
+            $send(self, 'indent', [], function $$15(){var self = $$15.$$s == null ? this : $$15.$$s;
 
-              return $send(self, 'in_resbody', [], ($$25 = function(){var self = $$25.$$s == null ? this : $$25.$$s;
+              return $send(self, 'in_resbody', [], function $$16(){var self = $$16.$$s == null ? this : $$16.$$s;
 
-                return self.$line(self.$stmt(self.$rescue_body()))}, $$25.$$s = self, $$25.$$arity = 0, $$25))}, $$24.$$s = self, $$24.$$arity = 0, $$24));
-            return self.$line("} finally { Opal.pop_exception(); }");}, $$23.$$s = self, $$23.$$arity = 0, $$23));
+                return self.$line(self.$stmt(self.$rescue_body()))}, {$$arity: 0, $$s: self})}, {$$arity: 0, $$s: self});
+            return self.$line("} finally { Opal.pop_exception(); }");}, {$$arity: 0, $$s: self});
           return self.$line("}");
-        }, $ResBodyNode_compile$22.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$klasses', $ResBodyNode_klasses$26 = function $$klasses() {
-          var self = this, $ret_or_10 = nil;
+        $def(self, '$klasses', function $$klasses() {
+          var self = this, $ret_or_1 = nil;
 
-          if ($truthy(($ret_or_10 = self.$klasses_sexp()))) {
-            return $ret_or_10
+          if ($truthy(($ret_or_1 = self.$klasses_sexp()))) {
+            return $ret_or_1
           } else {
             return self.$s("array", self.$s("const", nil, "StandardError"))
           }
-        }, $ResBodyNode_klasses$26.$$arity = 0);
-        return (Opal.def(self, '$rescue_body', $ResBodyNode_rescue_body$27 = function $$rescue_body() {
-          var self = this, body_code = nil, $ret_or_11 = nil;
+        }, 0);
+        return $def(self, '$rescue_body', function $$rescue_body() {
+          var self = this, body_code = nil, $ret_or_1 = nil;
 
           
-          body_code = (function() {if ($truthy(($ret_or_11 = self.$body()))) {
-            return $ret_or_11
-          } else {
-            return self.$s("nil")
-          }; return nil; })();
-          if ($truthy(self['$stmt?']())) {
-          } else {
+          body_code = ($truthy(($ret_or_1 = self.$body())) ? ($ret_or_1) : (self.$s("nil")));
+          if (!$truthy(self['$stmt?']())) {
             body_code = self.$compiler().$returns(body_code)
           };
           return body_code;
-        }, $ResBodyNode_rescue_body$27.$$arity = 0), nil) && 'rescue_body';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      return (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('Base'));
+      return (function($base, $super) {
         var self = $klass($base, $super, 'RetryNode');
 
-        var $nesting = [self].concat($parent_nesting), $RetryNode_compile$28;
-
+        
         
         self.$handle("retry");
-        return (Opal.def(self, '$compile', $RetryNode_compile$28 = function $$compile() {
+        return $def(self, '$compile', function $$compile() {
           var self = this;
 
           
-          if ($truthy(self['$in_resbody?']())) {
-          } else {
+          if (!$truthy(self['$in_resbody?']())) {
             self.$error("Invalid retry")
           };
-          return self.$push("" + "continue " + (self.$scope().$current_rescue().$gen_retry_id()));
-        }, $RetryNode_compile$28.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-    })($nesting[0], $nesting)
-  })($nesting[0], $nesting);
-};
-
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/case"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy, $range = Opal.range;
-
-  Opal.add_stubs(['$require', '$handle', '$children', '$in_case', '$compiler', '$compile_code', '$needs_closure?', '$wrap', '$condition', '$[]=', '$case_stmt', '$-', '$add_local', '$push', '$expr', '$each_with_index', '$case_parts', '$line', '$type', '$===', '$returns', '$==', '$stmt', '$!', '$stmt?', '$[]', '$when_checks', '$js_truthy', '$s', '$process', '$body_code', '$last']);
-  
-  self.$require("opal/nodes/base");
-  return (function($base, $parent_nesting) {
-    var self = $module($base, 'Opal');
-
-    var $nesting = [self].concat($parent_nesting);
-
-    return (function($base, $parent_nesting) {
-      var self = $module($base, 'Nodes');
-
-      var $nesting = [self].concat($parent_nesting);
-
-      
-      (function($base, $super, $parent_nesting) {
-        var self = $klass($base, $super, 'CaseNode');
-
-        var $nesting = [self].concat($parent_nesting), $CaseNode_compile$1, $CaseNode_compile_code$3, $CaseNode_needs_closure$ques$5, $CaseNode_case_parts$6, $CaseNode_case_stmt$7;
-
-        
-        self.$handle("case");
-        self.$children("condition");
-        
-        Opal.def(self, '$compile', $CaseNode_compile$1 = function $$compile() {
-          var $$2, self = this;
-
-          return $send(self.$compiler(), 'in_case', [], ($$2 = function(){var self = $$2.$$s == null ? this : $$2.$$s;
-
-            
-            self.$compile_code();
-            if ($truthy(self['$needs_closure?']())) {
-              return self.$wrap("(function() {", "})()")
-            } else {
-              return nil
-            };}, $$2.$$s = self, $$2.$$arity = 0, $$2))
-        }, $CaseNode_compile$1.$$arity = 0);
-        
-        Opal.def(self, '$compile_code', $CaseNode_compile_code$3 = function $$compile_code() {
-          var $$4, self = this, handled_else = nil, $writer = nil, $ret_or_1 = nil;
-
-          
-          handled_else = false;
-          if ($truthy(self.$condition())) {
-            
-            
-            $writer = ["cond", true];
-            $send(self.$case_stmt(), '[]=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];;
-            self.$add_local("$case");
-            self.$push("$case = ", self.$expr(self.$condition()), ";");};
-          $send(self.$case_parts(), 'each_with_index', [], ($$4 = function(wen, idx){var self = $$4.$$s == null ? this : $$4.$$s, $case = nil;
-
-            
-            
-            if (wen == null) {
-              wen = nil;
-            };
-            
-            if (idx == null) {
-              idx = nil;
-            };
-            if ($truthy(wen)) {
-            } else {
-              return nil;
-            };
-            self.$line();
-            return (function() {$case = wen.$type();
-            if ("when"['$===']($case)) {
-            if ($truthy(self['$needs_closure?']())) {
-              wen = self.$compiler().$returns(wen)};
-            if (idx['$=='](0)) {
-            } else {
-              self.$push("else ")
-            };
-            return self.$push(self.$stmt(wen));}
-            else {
-            handled_else = true;
-            if ($truthy(self['$needs_closure?']())) {
-              wen = self.$compiler().$returns(wen)};
-            return self.$push("else {", self.$stmt(wen), "}");}})();}, $$4.$$s = self, $$4.$$arity = 2, $$4));
-          if ($truthy((function() {if ($truthy(($ret_or_1 = self['$needs_closure?']()))) {
-            return handled_else['$!']()
-          } else {
-            return $ret_or_1
-          }; return nil; })())) {
-            
-            self.$line();
-            return self.$push("else { return nil }");
-          } else {
-            return nil
-          };
-        }, $CaseNode_compile_code$3.$$arity = 0);
-        
-        Opal.def(self, '$needs_closure?', $CaseNode_needs_closure$ques$5 = function() {
-          var self = this;
-
-          return self['$stmt?']()['$!']()
-        }, $CaseNode_needs_closure$ques$5.$$arity = 0);
-        
-        Opal.def(self, '$case_parts', $CaseNode_case_parts$6 = function $$case_parts() {
-          var self = this;
-
-          return self.$children()['$[]']($range(1, -1, false))
-        }, $CaseNode_case_parts$6.$$arity = 0);
-        return (Opal.def(self, '$case_stmt', $CaseNode_case_stmt$7 = function $$case_stmt() {
-          var self = this;
-
-          return self.$compiler().$case_stmt()
-        }, $CaseNode_case_stmt$7.$$arity = 0), nil) && 'case_stmt';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      return (function($base, $super, $parent_nesting) {
-        var self = $klass($base, $super, 'WhenNode');
-
-        var $nesting = [self].concat($parent_nesting), $WhenNode_compile$8, $WhenNode_when_checks$10, $WhenNode_case_stmt$11, $WhenNode_body_code$12;
-
-        self.$$prototype.level = nil;
-        
-        self.$handle("when");
-        self.$children("whens", "body");
-        
-        Opal.def(self, '$compile', $WhenNode_compile$8 = function $$compile() {
-          var $$9, self = this;
-
-          
-          self.$push("if (");
-          $send(self.$when_checks(), 'each_with_index', [], ($$9 = function(check, idx){var self = $$9.$$s == null ? this : $$9.$$s, call = nil;
-
-            
-            
-            if (check == null) {
-              check = nil;
-            };
-            
-            if (idx == null) {
-              idx = nil;
-            };
-            if (idx['$=='](0)) {
-            } else {
-              self.$push(" || ")
-            };
-            if (check.$type()['$==']("splat")) {
-              
-              self.$push("(function($splt) { for (var i = 0, ii = $splt.length; i < ii; i++) {");
-              if ($truthy(self.$case_stmt()['$[]']("cond"))) {
-                self.$push("if ($splt[i]['$===']($case)) { return true; }")
-              } else {
-                self.$push("if (", self.$js_truthy(check), ")) { return true; }")
-              };
-              return self.$push("} return false; })(", self.$expr(check.$children()['$[]'](0)), ")");
-            } else if ($truthy(self.$case_stmt()['$[]']("cond"))) {
-              
-              call = self.$s("send", check, "===", self.$s("arglist", self.$s("js_tmp", "$case")));
-              return self.$push(self.$expr(call));
-            } else {
-              return self.$push(self.$js_truthy(check))
-            };}, $$9.$$s = self, $$9.$$arity = 2, $$9));
-          return self.$push(") {", self.$process(self.$body_code(), self.level), "}");
-        }, $WhenNode_compile$8.$$arity = 0);
-        
-        Opal.def(self, '$when_checks', $WhenNode_when_checks$10 = function $$when_checks() {
-          var self = this;
-
-          return self.$children()['$[]']($range(0, -2, false))
-        }, $WhenNode_when_checks$10.$$arity = 0);
-        
-        Opal.def(self, '$case_stmt', $WhenNode_case_stmt$11 = function $$case_stmt() {
-          var self = this;
-
-          return self.$compiler().$case_stmt()
-        }, $WhenNode_case_stmt$11.$$arity = 0);
-        return (Opal.def(self, '$body_code', $WhenNode_body_code$12 = function $$body_code() {
-          var self = this, $ret_or_2 = nil;
-
-          if ($truthy(($ret_or_2 = self.$children().$last()))) {
-            return $ret_or_2
-          } else {
-            return self.$s("nil")
-          }
-        }, $WhenNode_body_code$12.$$arity = 0), nil) && 'body_code';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
+          return self.$push("continue " + (self.$scope().$current_rescue().$gen_retry_id()));
+        }, 0);
+      })($nesting[0], $$('Base'));
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/super"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $slice = Opal.slice, $truthy = Opal.truthy, $send = Opal.send;
+Opal.modules["opal/nodes/super"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $to_a = Opal.to_a, $slice = Opal.slice, $truthy = Opal.truthy, $send = Opal.send, $def = Opal.def, $to_ary = Opal.to_ary, $eqeq = Opal.eqeq, $not = Opal.not, $eqeqeq = Opal.eqeqeq, $rb_plus = Opal.rb_plus, $rb_minus = Opal.rb_minus, $rb_gt = Opal.rb_gt;
 
-  Opal.add_stubs(['$require', '$include?', '$type', '$s', '$helper', '$push', '$compile_receiver', '$compile_method_body', '$compile_method_name', '$compile_arguments', '$compile_block_pass', '$private', '$def?', '$scope', '$find_parent_def', '$to_s', '$mid', '$def_scope', '$identify!', '$method_id', '$def_scope_identity', '$defined_check_param', '$allow_stubs', '$super_chain', '$join', '$map', '$implicit_arguments_param', '$super_method_invocation', '$iter?', '$super_block_invocation', '$raise', '$handle', '$wrap', '$uses_block!', '$compile_using_send', '$==', '$iter', '$uses_zuper=', '$-', '$block_name', '$!', '$<<', '$empty?', '$children', '$arglist', '$expr', '$===']);
+  Opal.add_stubs('require,include?,type,s,helper,push,compile_receiver,compile_method_body,compile_method_name,compile_arguments,compile_block_pass,private,def?,scope,find_parent_def,to_s,mid,def_scope,identify!,self,method_id,def_scope_identity,defined_check_param,allow_stubs,super_chain,join,map,implicit_arguments_param,super_method_invocation,iter?,super_block_invocation,raise,handle,wrap,uses_block!,compile_using_send,==,iter,block_name,implicit_arglist,!,<<,new,each,children,original_args,[],===,+,[]=,-,>,meta,empty?');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -37828,48 +34499,41 @@ Opal.modules["opal/nodes/super"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
-      (function($base, $super, $parent_nesting) {
+      (function($base, $super) {
         var self = $klass($base, $super, 'BaseSuperNode');
 
-        var $nesting = [self].concat($parent_nesting), $BaseSuperNode_initialize$1, $BaseSuperNode_compile_using_send$2, $BaseSuperNode_def_scope$3, $BaseSuperNode_defined_check_param$4, $BaseSuperNode_implicit_arguments_param$5, $BaseSuperNode_method_id$6, $BaseSuperNode_def_scope_identity$7, $BaseSuperNode_allow_stubs$8, $BaseSuperNode_super_method_invocation$9, $BaseSuperNode_super_block_invocation$10, $BaseSuperNode_compile_method_body$12, $BaseSuperNode_compile_method_name$13;
+        var $proto = self.$$prototype;
 
-        self.$$prototype.sexp = self.$$prototype.def_scope = nil;
+        $proto.sexp = $proto.def_scope = nil;
         
         
-        Opal.def(self, '$initialize', $BaseSuperNode_initialize$1 = function $$initialize($a) {
-          var $post_args, $b, $c, $iter = $BaseSuperNode_initialize$1.$$p, $yield = $iter || nil, self = this, args = nil, rest = nil, last_child = nil, $ret_or_1 = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        $def(self, '$initialize', function $$initialize($a) {
+          var $post_args, $rest_arg, $b, $c, $yield = $$initialize.$$p || nil, self = this, args = nil, rest = nil, last_child = nil;
 
-          if ($iter) $BaseSuperNode_initialize$1.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$initialize.$$p;
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
-          ;
-          $send2(self, $find_super(self, 'initialize', $BaseSuperNode_initialize$1, false, true), 'initialize', $zuper, $iter);
-          args = [].concat(Opal.to_a(self.sexp));
-          $b = [].concat(Opal.to_a(args)), $c = $b.length - 1, $c = ($c < 0) ? 0 : $c, (rest = $slice.call($b, 0, $c)), (last_child = ($b[$c] == null ? nil : $b[$c])), $b;
-          if ($truthy((function() {if ($truthy(($ret_or_1 = last_child))) {
-            return ["iter", "block_pass"]['$include?'](last_child.$type())
-          } else {
-            return $ret_or_1
-          }; return nil; })())) {
+          $post_args = Opal.slice.call(arguments);
+          
+          $rest_arg = $post_args;;
+          $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', $to_a($rest_arg), $yield);
+          args = [].concat($to_a(self.sexp));
+          $b = [].concat($to_a(args)), $c = $b.length - 1, $c = ($c < 0) ? 0 : $c, (rest = $slice.call($b, 0, $c)), (last_child = ($b[$c] == null ? nil : $b[$c])), $b;
+          if (($truthy(last_child) && ($truthy(["iter", "block_pass"]['$include?'](last_child.$type()))))) {
             
             self.iter = last_child;
             args = rest;
           } else {
             self.iter = self.$s("js_tmp", "null")
           };
-          self.arglist = $send(self, 's', ["arglist"].concat(Opal.to_a(args)));
+          self.arglist = $send(self, 's', ["arglist"].concat($to_a(args)));
           return (self.recvr = self.$s("self"));
-        }, $BaseSuperNode_initialize$1.$$arity = -1);
+        }, -1);
         
-        Opal.def(self, '$compile_using_send', $BaseSuperNode_compile_using_send$2 = function $$compile_using_send() {
+        $def(self, '$compile_using_send', function $$compile_using_send() {
           var self = this;
 
           
@@ -37881,77 +34545,65 @@ Opal.modules["opal/nodes/super"] = function(Opal) {
           self.$compile_arguments();
           self.$compile_block_pass();
           return self.$push(")");
-        }, $BaseSuperNode_compile_using_send$2.$$arity = 0);
+        }, 0);
         self.$private();
         
-        Opal.def(self, '$def_scope', $BaseSuperNode_def_scope$3 = function $$def_scope() {
-          var self = this, $ret_or_2 = nil;
+        $def(self, '$def_scope', function $$def_scope() {
+          var self = this, $ret_or_1 = nil;
 
-          return (self.def_scope = (function() {if ($truthy(($ret_or_2 = self.def_scope))) {
-            return $ret_or_2
-          } else if ($truthy(self.$scope()['$def?']())) {
-            return self.$scope()
-          } else {
-            return self.$scope().$find_parent_def()
-          }; return nil; })())
-        }, $BaseSuperNode_def_scope$3.$$arity = 0);
+          return (self.def_scope = ($truthy(($ret_or_1 = self.def_scope)) ? ($ret_or_1) : ($truthy(self.$scope()['$def?']()) ? (self.$scope()) : (self.$scope().$find_parent_def()))))
+        }, 0);
         
-        Opal.def(self, '$defined_check_param', $BaseSuperNode_defined_check_param$4 = function $$defined_check_param() {
-          var self = this;
-
+        $def(self, '$defined_check_param', function $$defined_check_param() {
+          
           return "false"
-        }, $BaseSuperNode_defined_check_param$4.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$implicit_arguments_param', $BaseSuperNode_implicit_arguments_param$5 = function $$implicit_arguments_param() {
-          var self = this;
-
+        $def(self, '$implicit_arguments_param', function $$implicit_arguments_param() {
+          
           return "false"
-        }, $BaseSuperNode_implicit_arguments_param$5.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$method_id', $BaseSuperNode_method_id$6 = function $$method_id() {
+        $def(self, '$method_id', function $$method_id() {
           var self = this;
 
           return self.$def_scope().$mid().$to_s()
-        }, $BaseSuperNode_method_id$6.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$def_scope_identity', $BaseSuperNode_def_scope_identity$7 = function $$def_scope_identity() {
+        $def(self, '$def_scope_identity', function $$def_scope_identity() {
           var self = this;
 
           return self.$def_scope()['$identify!'](self.$def_scope().$mid())
-        }, $BaseSuperNode_def_scope_identity$7.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$allow_stubs', $BaseSuperNode_allow_stubs$8 = function $$allow_stubs() {
-          var self = this;
-
+        $def(self, '$allow_stubs', function $$allow_stubs() {
+          
           return "true"
-        }, $BaseSuperNode_allow_stubs$8.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$super_method_invocation', $BaseSuperNode_super_method_invocation$9 = function $$super_method_invocation() {
+        $def(self, '$super_method_invocation', function $$super_method_invocation() {
           var self = this;
 
           
           self.$helper("find_super");
-          return "" + "$find_super(self, '" + (self.$method_id()) + "', " + (self.$def_scope_identity()) + ", " + (self.$defined_check_param()) + ", " + (self.$allow_stubs()) + ")";
-        }, $BaseSuperNode_super_method_invocation$9.$$arity = 0);
+          return "$find_super(" + (self.$scope().$self()) + ", '" + (self.$method_id()) + "', " + (self.$def_scope_identity()) + ", " + (self.$defined_check_param()) + ", " + (self.$allow_stubs()) + ")";
+        }, 0);
         
-        Opal.def(self, '$super_block_invocation', $BaseSuperNode_super_block_invocation$10 = function $$super_block_invocation() {
-          var $a, $b, $$11, self = this, chain = nil, cur_defn = nil, mid = nil, trys = nil;
+        $def(self, '$super_block_invocation', function $$super_block_invocation() {
+          var $a, $b, self = this, chain = nil, cur_defn = nil, mid = nil, trys = nil;
 
           
           self.$helper("find_block_super");
-          $b = self.$scope().$super_chain(), $a = Opal.to_ary($b), (chain = ($a[0] == null ? nil : $a[0])), (cur_defn = ($a[1] == null ? nil : $a[1])), (mid = ($a[2] == null ? nil : $a[2])), $b;
-          trys = $send(chain, 'map', [], ($$11 = function(c){var self = $$11.$$s == null ? this : $$11.$$s;
-
+          $b = self.$scope().$super_chain(), $a = $to_ary($b), (chain = ($a[0] == null ? nil : $a[0])), (cur_defn = ($a[1] == null ? nil : $a[1])), (mid = ($a[2] == null ? nil : $a[2])), $b;
+          trys = $send(chain, 'map', [], function $$1(c){
             
             
-            if (c == null) {
-              c = nil;
-            };
-            return "" + (c) + ".$$def";}, $$11.$$s = self, $$11.$$arity = 1, $$11)).$join(" || ");
-          return "" + "$find_block_super(self, " + (mid) + ", (" + (trys) + " || " + (cur_defn) + "), " + (self.$defined_check_param()) + ", " + (self.$implicit_arguments_param()) + ")";
-        }, $BaseSuperNode_super_block_invocation$10.$$arity = 0);
+            if (c == null) c = nil;;
+            return "" + (c) + ".$$def";}, 1).$join(" || ");
+          return "$find_block_super(" + (self.$scope().$self()) + ", " + (mid) + ", (" + (trys) + " || " + (cur_defn) + "), " + (self.$defined_check_param()) + ", " + (self.$implicit_arguments_param()) + ")";
+        }, 0);
         
-        Opal.def(self, '$compile_method_body', $BaseSuperNode_compile_method_body$12 = function $$compile_method_body() {
+        $def(self, '$compile_method_body', function $$compile_method_body() {
           var self = this;
 
           
@@ -37963,183 +34615,203 @@ Opal.modules["opal/nodes/super"] = function(Opal) {
           } else {
             return self.$raise("super must be called from method body or block")
           };
-        }, $BaseSuperNode_compile_method_body$12.$$arity = 0);
-        return (Opal.def(self, '$compile_method_name', $BaseSuperNode_compile_method_name$13 = function $$compile_method_name() {
+        }, 0);
+        return $def(self, '$compile_method_name', function $$compile_method_name() {
           var $a, $b, self = this, _chain = nil, _cur_defn = nil, mid = nil;
 
           if ($truthy(self.$scope()['$def?']())) {
-            return self.$push("" + ", '" + (self.$method_id()) + "'")
+            return self.$push(", '" + (self.$method_id()) + "'")
           } else if ($truthy(self.$scope()['$iter?']())) {
             
-            $b = self.$scope().$super_chain(), $a = Opal.to_ary($b), (_chain = ($a[0] == null ? nil : $a[0])), (_cur_defn = ($a[1] == null ? nil : $a[1])), (mid = ($a[2] == null ? nil : $a[2])), $b;
-            return self.$push("" + ", " + (mid));
+            $b = self.$scope().$super_chain(), $a = $to_ary($b), (_chain = ($a[0] == null ? nil : $a[0])), (_cur_defn = ($a[1] == null ? nil : $a[1])), (mid = ($a[2] == null ? nil : $a[2])), $b;
+            return self.$push(", " + (mid));
           } else {
             return nil
           }
-        }, $BaseSuperNode_compile_method_name$13.$$arity = 0), nil) && 'compile_method_name';
-      })($nesting[0], $$($nesting, 'CallNode'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('CallNode'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'DefinedSuperNode');
 
-        var $nesting = [self].concat($parent_nesting), $DefinedSuperNode_allow_stubs$14, $DefinedSuperNode_defined_check_param$15, $DefinedSuperNode_compile$16;
-
+        
         
         self.$handle("defined_super");
         
-        Opal.def(self, '$allow_stubs', $DefinedSuperNode_allow_stubs$14 = function $$allow_stubs() {
-          var self = this;
-
+        $def(self, '$allow_stubs', function $$allow_stubs() {
+          
           return "false"
-        }, $DefinedSuperNode_allow_stubs$14.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$defined_check_param', $DefinedSuperNode_defined_check_param$15 = function $$defined_check_param() {
-          var self = this;
-
+        $def(self, '$defined_check_param', function $$defined_check_param() {
+          
           return "true"
-        }, $DefinedSuperNode_defined_check_param$15.$$arity = 0);
-        return (Opal.def(self, '$compile', $DefinedSuperNode_compile$16 = function $$compile() {
+        }, 0);
+        return $def(self, '$compile', function $$compile() {
           var self = this;
 
           
           self.$compile_receiver();
           self.$compile_method_body();
           return self.$wrap("((", ") != null ? \"super\" : nil)");
-        }, $DefinedSuperNode_compile$16.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'BaseSuperNode'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('BaseSuperNode'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'SuperNode');
 
-        var $nesting = [self].concat($parent_nesting), $SuperNode_initialize$17, $SuperNode_compile$18;
-
+        
         
         self.$handle("super");
         
-        Opal.def(self, '$initialize', $SuperNode_initialize$17 = function $$initialize($a) {
-          var $post_args, $iter = $SuperNode_initialize$17.$$p, $yield = $iter || nil, self = this, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        $def(self, '$initialize', function $$initialize($a) {
+          var $post_args, $rest_arg, $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $SuperNode_initialize$17.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$initialize.$$p;
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
-          ;
-          $send2(self, $find_super(self, 'initialize', $SuperNode_initialize$17, false, true), 'initialize', $zuper, $iter);
+          $post_args = Opal.slice.call(arguments);
+          
+          $rest_arg = $post_args;;
+          $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', $to_a($rest_arg), $yield);
           if ($truthy(self.$scope()['$def?']())) {
             return self.$scope()['$uses_block!']()
           } else {
             return nil
           };
-        }, $SuperNode_initialize$17.$$arity = -1);
-        return (Opal.def(self, '$compile', $SuperNode_compile$18 = function $$compile() {
+        }, -1);
+        return $def(self, '$compile', function $$compile() {
           var self = this;
 
           return self.$compile_using_send()
-        }, $SuperNode_compile$18.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'BaseSuperNode'), $nesting);
+        }, 0);
+      })($nesting[0], $$('BaseSuperNode'));
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'ZsuperNode');
 
-        var $nesting = [self].concat($parent_nesting), $ZsuperNode_implicit_arguments_param$19, $ZsuperNode_initialize$20, $ZsuperNode_compile$21, $ZsuperNode_compile_arguments$22, $ZsuperNode_block_name$23;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
         
         self.$handle("zsuper");
         
-        Opal.def(self, '$implicit_arguments_param', $ZsuperNode_implicit_arguments_param$19 = function $$implicit_arguments_param() {
-          var self = this;
-
+        $def(self, '$implicit_arguments_param', function $$implicit_arguments_param() {
+          
           return "true"
-        }, $ZsuperNode_implicit_arguments_param$19.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$initialize', $ZsuperNode_initialize$20 = function $$initialize($a) {
-          var $post_args, $iter = $ZsuperNode_initialize$20.$$p, $yield = $iter || nil, self = this, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        $def(self, '$initialize', function $$initialize($a) {
+          var $post_args, $rest_arg, $yield = $$initialize.$$p || nil, self = this, $ret_or_1 = nil;
 
-          if ($iter) $ZsuperNode_initialize$20.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$initialize.$$p;
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
-          ;
-          $send2(self, $find_super(self, 'initialize', $ZsuperNode_initialize$20, false, true), 'initialize', $zuper, $iter);
-          if (self.$iter().$type()['$==']("iter")) {
+          $post_args = Opal.slice.call(arguments);
+          
+          $rest_arg = $post_args;;
+          $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', $to_a($rest_arg), $yield);
+          if ($eqeq(self.$iter().$type(), "iter")) {
             return nil
           } else {
             
             self.$scope()['$uses_block!']();
-            return (self.iter = self.$s("js_tmp", "$iter"));
+            return (self.iter = self.$s("js_tmp", ($truthy(($ret_or_1 = self.$scope().$block_name())) ? ($ret_or_1) : ("$yield"))));
           };
-        }, $ZsuperNode_initialize$20.$$arity = -1);
+        }, -1);
         
-        Opal.def(self, '$compile', $ZsuperNode_compile$21 = function $$compile() {
-          var self = this, $writer = nil, implicit_args = nil, $ret_or_3 = nil, block_pass = nil;
+        $def(self, '$compile', function $$compile() {
+          var self = this, implicit_args = nil, block_pass = nil;
 
           
           if ($truthy(self.$def_scope())) {
             
-            
-            $writer = [true];
-            $send(self.$def_scope(), 'uses_zuper=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];;
-            implicit_args = [self.$s("js_tmp", "$zuper")];
-            if ($truthy((function() {if ($truthy(($ret_or_3 = self.$block_name()))) {
-              return self.$iter()['$!']()
-            } else {
-              return $ret_or_3
-            }; return nil; })())) {
+            implicit_args = self.$implicit_arglist();
+            if (($truthy(self.$block_name()) && ($not(self.$iter())))) {
               
               block_pass = self.$s("block_pass", self.$s("lvar", self.$block_name()));
-              implicit_args['$<<'](block_pass);};
-            self.arglist = $send(self, 's', ["arglist"].concat(Opal.to_a(implicit_args)));};
+              implicit_args['$<<'](block_pass);
+            };
+            self.arglist = $send(self, 's', ["arglist"].concat($to_a(implicit_args)));
+          };
           return self.$compile_using_send();
-        }, $ZsuperNode_compile$21.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_arguments', $ZsuperNode_compile_arguments$22 = function $$compile_arguments() {
-          var self = this;
+        $def(self, '$implicit_arglist', function $$implicit_arglist() {
+          var self = this, args = nil, kwargs = nil, same_arg_counter = nil;
 
           
-          self.$push(", ");
-          if ($truthy(self.$arglist().$children()['$empty?']())) {
-            return self.$push("[]")
-          } else {
-            return self.$push(self.$expr(self.$arglist()))
+          args = [];
+          kwargs = [];
+          same_arg_counter = $$('Hash').$new(0);
+          $send(self.$def_scope().$original_args().$children(), 'each', [], function $$2(sexp){var self = $$2.$$s == null ? this : $$2.$$s, lvar_name = nil, $ret_or_1 = nil, arg_node = nil, $writer = nil, key_name = nil;
+
+            
+            
+            if (sexp == null) sexp = nil;;
+            lvar_name = sexp.$children()['$[]'](0);
+            if (($eqeqeq("arg", ($ret_or_1 = sexp.$type())) || ($eqeqeq("optarg", $ret_or_1)))) {
+              
+              arg_node = self.$s("lvar", lvar_name);
+              if ($eqeq(lvar_name['$[]'](0), "_")) {
+                
+                
+                $writer = [lvar_name, $rb_plus(same_arg_counter['$[]'](lvar_name), 1)];
+                $send(same_arg_counter, '[]=', $to_a($writer));
+                $writer[$rb_minus($writer["length"], 1)];;
+                if ($truthy($rb_gt(same_arg_counter['$[]'](lvar_name), 1))) {
+                  arg_node = self.$s("js_tmp", "" + (lvar_name) + "_$" + (same_arg_counter['$[]'](lvar_name)))
+                };
+              };
+              return args['$<<'](arg_node);
+            } else if ($eqeqeq("restarg", $ret_or_1)) {
+              
+              arg_node = ($truthy(lvar_name) ? (self.$s("lvar", lvar_name)) : (self.$s("js_tmp", "$rest_arg")));
+              return args['$<<'](self.$s("splat", arg_node));
+            } else if (($eqeqeq("kwarg", $ret_or_1) || ($eqeqeq("kwoptarg", $ret_or_1)))) {
+              
+              key_name = sexp.$meta()['$[]']("arg_name");
+              return kwargs['$<<'](self.$s("pair", self.$s("sym", key_name), self.$s("lvar", lvar_name)));
+            } else if ($eqeqeq("kwrestarg", $ret_or_1)) {
+              
+              arg_node = ($truthy(lvar_name) ? (self.$s("lvar", lvar_name)) : (self.$s("js_tmp", "$kw_rest_arg")));
+              return kwargs['$<<'](self.$s("kwsplat", arg_node));
+            } else {
+              return nil
+            };}, {$$arity: 1, $$s: self});
+          if (!$truthy(kwargs['$empty?']())) {
+            args['$<<']($send(self, 's', ["hash"].concat($to_a(kwargs))))
           };
-        }, $ZsuperNode_compile_arguments$22.$$arity = 0);
-        return (Opal.def(self, '$block_name', $ZsuperNode_block_name$23 = function $$block_name() {
-          var self = this, $case = nil;
+          return args;
+        }, 0);
+        return $def(self, '$block_name', function $$block_name() {
+          var self = this, $ret_or_1 = nil;
 
-          return (function() {$case = self.$def_scope();
-          if ($$$($$$($$($nesting, 'Opal'), 'Nodes'), 'IterNode')['$===']($case)) {return self.$def_scope().$block_name()}
-          else if ($$$($$$($$($nesting, 'Opal'), 'Nodes'), 'DefNode')['$===']($case)) {return self.$def_scope().$block_name()}
-          else {return self.$raise("" + "Don't know what to do with super in the scope " + (self.$def_scope()))}})()
-        }, $ZsuperNode_block_name$23.$$arity = 0), nil) && 'block_name';
-      })($nesting[0], $$($nesting, 'SuperNode'), $nesting);
+          if ($eqeqeq($$$($$$($$('Opal'), 'Nodes'), 'IterNode'), ($ret_or_1 = self.$def_scope()))) {
+            return self.$def_scope().$block_name()
+          } else if ($eqeqeq($$$($$$($$('Opal'), 'Nodes'), 'DefNode'), $ret_or_1)) {
+            return self.$def_scope().$block_name()
+          } else {
+            return self.$raise("Don't know what to do with super in the scope " + (self.$def_scope()))
+          }
+        }, 0);
+      })($nesting[0], $$('SuperNode'), $nesting);
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/version"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module;
+Opal.modules["opal/version"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $const_set = Opal.const_set;
 
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Opal');
 
     var $nesting = [self].concat($parent_nesting);
 
-    return Opal.const_set($nesting[0], 'VERSION', "1.3.0.dev")
+    return $const_set($nesting[0], 'VERSION', "1.5.0.dev")
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/top"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy;
+Opal.modules["opal/nodes/top"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $truthy = Opal.truthy, $eqeq = Opal.eqeq, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$push', '$version_comment', '$opening', '$in_scope', '$use_strict?', '$compiler', '$line', '$stmt', '$stmts', '$is_a?', '$eval?', '$add_temp', '$add_used_helpers', '$add_used_operators', '$to_vars', '$scope', '$compile_method_stubs', '$compile_irb_vars', '$compile_end_construct', '$closing', '$requirable?', '$inspect', '$module_name', '$file', '$esm?', '$returns', '$body', '$irb?', '$each', '$to_a', '$helpers', '$operator_helpers', '$[]', '$method_missing?', '$method_calls', '$join', '$map', '$empty?', '$eof_content']);
+  Opal.add_stubs('require,handle,children,top_scope=,compiler,-,[],meta,sexp,dynamic_cache_result=,push,version_comment,in_scope,==,body,s,line,use_strict?,stmt,stmts,is_a?,eval?,add_temp,add_used_helpers,to_vars,scope,compile_method_stubs,compile_irb_vars,compile_end_construct,opening,closing,await_encountered,requirable?,unshift,inspect,module_name,file,esm?,returns,irb?,each,to_a,helpers,method_missing?,method_calls,join,map,to_proc,empty?,eof_content');
   
   self.$require("pathname");
   self.$require("opal/version");
@@ -38152,86 +34824,125 @@ Opal.modules["opal/nodes/top"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'TopNode');
 
-        var $nesting = [self].concat($parent_nesting), $TopNode_compile$1, $TopNode_opening$3, $TopNode_closing$4, $TopNode_stmts$5, $TopNode_compile_irb_vars$6, $TopNode_add_used_helpers$7, $TopNode_add_used_operators$9, $TopNode_compile_method_stubs$11, $TopNode_compile_end_construct$13, $TopNode_version_comment$14;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
         
         self.$handle("top");
         self.$children("body");
         
-        Opal.def(self, '$compile', $TopNode_compile$1 = function $$compile() {
-          var $$2, self = this;
+        $def(self, '$compile', function $$compile() {
+          var self = this, $writer = nil;
 
           
+          
+          $writer = [self];
+          $send(self.$compiler(), 'top_scope=', $to_a($writer));
+          $writer[$rb_minus($writer["length"], 1)];;
+          if ($truthy(self.$sexp().$meta()['$[]']("dynamic_cache_result"))) {
+            
+            $writer = [true];
+            $send(self.$compiler(), 'dynamic_cache_result=', $to_a($writer));
+            $writer[$rb_minus($writer["length"], 1)];
+          };
           self.$push(self.$version_comment());
-          self.$opening();
-          $send(self, 'in_scope', [], ($$2 = function(){var self = $$2.$$s == null ? this : $$2.$$s, body_code = nil;
+          $send(self, 'in_scope', [], function $$1(){var self = $$1.$$s == null ? this : $$1.$$s, body_code = nil;
+            if (self.define_nesting == null) self.define_nesting = nil;
+            if (self.define_self == null) self.define_self = nil;
+            if (self.define_relative_access == null) self.define_relative_access = nil;
+            if (self.define_absolute_const == null) self.define_absolute_const = nil;
 
-            
-            if ($truthy(self.$compiler()['$use_strict?']())) {
-              self.$line("\"use strict\";")};
-            body_code = self.$stmt(self.$stmts());
-            if ($truthy(body_code['$is_a?']($$($nesting, 'Array')))) {
-            } else {
-              body_code = [body_code]
-            };
-            if ($truthy(self.$compiler()['$eval?']())) {
-              self.$add_temp("$nesting = self.$$is_a_module ? [self] : [self.$$class]")
+            if ($eqeq(self.$body(), self.$s("nil"))) {
+              return self.$line("return Opal.nil;")
             } else {
               
-              self.$add_temp("self = Opal.top");
-              self.$add_temp("$nesting = []");
-            };
-            self.$add_temp("nil = Opal.nil");
-            self.$add_temp("$$$ = Opal.$$$");
-            self.$add_temp("$$ = Opal.$$");
-            self.$add_used_helpers();
-            self.$add_used_operators();
-            self.$line(self.$scope().$to_vars());
-            self.$compile_method_stubs();
-            self.$compile_irb_vars();
-            self.$compile_end_construct();
-            return self.$line(body_code);}, $$2.$$s = self, $$2.$$arity = 0, $$2));
+              if ($truthy(self.$compiler()['$use_strict?']())) {
+                self.$line("\"use strict\";")
+              };
+              body_code = self.$stmt(self.$stmts());
+              if (!$truthy(body_code['$is_a?']($$('Array')))) {
+                body_code = [body_code]
+              };
+              if ($truthy(self.$compiler()['$eval?']())) {
+                if ($truthy(self.define_nesting)) {
+                  self.$add_temp("$nesting = self.$$is_a_module ? [self] : [self.$$class]")
+                }
+              } else {
+                
+                if ($truthy(self.define_self)) {
+                  self.$add_temp("self = Opal.top")
+                };
+                if ($truthy(self.define_nesting)) {
+                  self.$add_temp("$nesting = []")
+                };
+              };
+              if ($truthy(self.define_relative_access)) {
+                self.$add_temp("$$ = Opal.$r($nesting)")
+              };
+              self.$add_temp("nil = Opal.nil");
+              if ($truthy(self.define_absolute_const)) {
+                self.$add_temp("$$$ = Opal.$$$")
+              };
+              self.$add_used_helpers();
+              self.$line(self.$scope().$to_vars());
+              self.$compile_method_stubs();
+              self.$compile_irb_vars();
+              self.$compile_end_construct();
+              return self.$line(body_code);
+            }}, {$$arity: 0, $$s: self});
+          self.$opening();
           return self.$closing();
-        }, $TopNode_compile$1.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$opening', $TopNode_opening$3 = function $$opening() {
-          var self = this;
+        $def(self, '$opening', function $$opening() {
+          var self = this, async_prefix = nil;
 
+          
+          if ($truthy(self.$await_encountered())) {
+            async_prefix = "async "
+          };
           if ($truthy(self.$compiler()['$requirable?']())) {
-            return self.$line("" + "Opal.modules[" + ($$$($$($nesting, 'Opal'), 'Compiler').$module_name(self.$compiler().$file()).$inspect()) + "] = function(Opal) {")
+            return self.$unshift("Opal.modules[" + ($$$($$('Opal'), 'Compiler').$module_name(self.$compiler().$file()).$inspect()) + "] = " + (async_prefix) + "function(Opal) {")
           } else if ($truthy(self.$compiler()['$eval?']())) {
-            return self.$line("(function(Opal, self) {")
+            return self.$unshift("(" + (async_prefix) + "function(Opal, self) {")
           } else if ($truthy(self.$compiler()['$esm?']())) {
-            return self.$line("export default (function(Opal) {")
+            return self.$unshift("export default Opal.queue(" + (async_prefix) + "function(Opal) {")
           } else {
-            return self.$line("(function(Opal) {")
-          }
-        }, $TopNode_opening$3.$$arity = 0);
+            return self.$unshift("Opal.queue(" + (async_prefix) + "function(Opal) {")
+          };
+        }, 0);
         
-        Opal.def(self, '$closing', $TopNode_closing$4 = function $$closing() {
+        $def(self, '$closing', function $$closing() {
           var self = this;
 
           if ($truthy(self.$compiler()['$requirable?']())) {
             return self.$line("};\n")
           } else if ($truthy(self.$compiler()['$eval?']())) {
-            return self.$line("})(Opal, self)")
+            return self.$line("})(Opal, self);")
           } else {
-            return self.$line("})(Opal);\n")
+            return self.$line("});\n")
           }
-        }, $TopNode_closing$4.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$stmts', $TopNode_stmts$5 = function $$stmts() {
+        $def(self, '$stmts', function $$stmts() {
           var self = this;
 
           return self.$compiler().$returns(self.$body())
-        }, $TopNode_stmts$5.$$arity = 0);
+        }, 0);
+        
+        $def(self, '$absolute_const', function $$absolute_const() {
+          var self = this;
+
+          
+          self.define_absolute_const = true;
+          return "$$$";
+        }, 0);
         
-        Opal.def(self, '$compile_irb_vars', $TopNode_compile_irb_vars$6 = function $$compile_irb_vars() {
+        $def(self, '$compile_irb_vars', function $$compile_irb_vars() {
           var self = this;
 
           if ($truthy(self.$compiler()['$irb?']())) {
@@ -38239,92 +34950,60 @@ Opal.modules["opal/nodes/top"] = function(Opal) {
           } else {
             return nil
           }
-        }, $TopNode_compile_irb_vars$6.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$add_used_helpers', $TopNode_add_used_helpers$7 = function $$add_used_helpers() {
-          var $$8, self = this;
-
-          return $send(self.$compiler().$helpers().$to_a(), 'each', [], ($$8 = function(h){var self = $$8.$$s == null ? this : $$8.$$s;
-
-            
-            
-            if (h == null) {
-              h = nil;
-            };
-            return self.$add_temp("" + "$" + (h) + " = Opal." + (h));}, $$8.$$s = self, $$8.$$arity = 1, $$8))
-        }, $TopNode_add_used_helpers$7.$$arity = 0);
-        
-        Opal.def(self, '$add_used_operators', $TopNode_add_used_operators$9 = function $$add_used_operators() {
-          var $$10, self = this, operators = nil;
+        $def(self, '$add_used_helpers', function $$add_used_helpers() {
+          var self = this;
 
-          
-          operators = self.$compiler().$operator_helpers().$to_a();
-          return $send(operators, 'each', [], ($$10 = function(op){var self = $$10.$$s == null ? this : $$10.$$s, name = nil;
+          return $send(self.$compiler().$helpers().$to_a(), 'each', [], function $$2(h){var self = $$2.$$s == null ? this : $$2.$$s;
 
             
             
-            if (op == null) {
-              op = nil;
-            };
-            name = $$$($$$($$($nesting, 'Nodes'), 'CallNode'), 'OPERATORS')['$[]'](op);
-            self.$line("" + "function $rb_" + (name) + "(lhs, rhs) {");
-            self.$line("" + "  return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs " + (op) + " rhs : lhs['$" + (op) + "'](rhs);");
-            return self.$line("}");}, $$10.$$s = self, $$10.$$arity = 1, $$10));
-        }, $TopNode_add_used_operators$9.$$arity = 0);
+            if (h == null) h = nil;;
+            return self.$add_temp("$" + (h) + " = Opal." + (h));}, {$$arity: 1, $$s: self})
+        }, 0);
         
-        Opal.def(self, '$compile_method_stubs', $TopNode_compile_method_stubs$11 = function $$compile_method_stubs() {
-          var $$12, self = this, calls = nil, stubs = nil;
+        $def(self, '$compile_method_stubs', function $$compile_method_stubs() {
+          var self = this, calls = nil, stubs = nil;
 
           if ($truthy(self.$compiler()['$method_missing?']())) {
             
             calls = self.$compiler().$method_calls();
-            stubs = $send(calls.$to_a(), 'map', [], ($$12 = function(k){var self = $$12.$$s == null ? this : $$12.$$s;
-
-              
-              
-              if (k == null) {
-                k = nil;
-              };
-              return "" + "'$" + (k) + "'";}, $$12.$$s = self, $$12.$$arity = 1, $$12)).$join(", ");
+            stubs = $send(calls.$to_a(), 'map', [], "to_s".$to_proc()).$join(",");
             if ($truthy(stubs['$empty?']())) {
               return nil
             } else {
-              return self.$line("" + "Opal.add_stubs([" + (stubs) + "]);")
+              return self.$line("Opal.add_stubs('" + (stubs) + "');")
             };
           } else {
             return nil
           }
-        }, $TopNode_compile_method_stubs$11.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_end_construct', $TopNode_compile_end_construct$13 = function $$compile_end_construct() {
+        $def(self, '$compile_end_construct', function $$compile_end_construct() {
           var self = this, content = nil;
 
           if ($truthy((content = self.$compiler().$eof_content()))) {
             
             self.$line("var $__END__ = Opal.Object.$new();");
-            return self.$line("" + "$__END__.$read = function() { return " + (content.$inspect()) + "; };");
+            return self.$line("$__END__.$read = function() { return " + (content.$inspect()) + "; };");
           } else {
             return nil
           }
-        }, $TopNode_compile_end_construct$13.$$arity = 0);
-        return (Opal.def(self, '$version_comment', $TopNode_version_comment$14 = function $$version_comment() {
-          var self = this;
-
-          return "" + "/* Generated by Opal " + ($$$($$($nesting, 'Opal'), 'VERSION')) + " */"
-        }, $TopNode_version_comment$14.$$arity = 0), nil) && 'version_comment';
-      })($nesting[0], $$($nesting, 'ScopeNode'), $nesting)
+        }, 0);
+        return $def(self, '$version_comment', function $$version_comment() {
+          
+          return "/* Generated by Opal " + ($$$($$('Opal'), 'VERSION')) + " */"
+        }, 0);
+      })($nesting[0], $$('ScopeNode'), $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/while"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy;
+Opal.modules["opal/nodes/while"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$js_truthy', '$test', '$with_temp', '$in_while', '$compiler', '$wrap_in_closure?', '$[]=', '$while_loop', '$-', '$indent', '$stmt', '$body', '$uses_redo?', '$compile_with_redo', '$compile_without_redo', '$wrap', '$private', '$push', '$compile_while', '$while_open', '$while_close', '$line', '$[]', '$expr?', '$recv?']);
+  Opal.add_stubs('require,handle,children,js_truthy,test,with_temp,in_while,compiler,wrap_in_closure?,[]=,while_loop,-,indent,stmt,body,uses_redo?,compile_with_redo,compile_without_redo,await_encountered,scope,wrap,private,push,compile_while,while_open,while_close,line,[],expr?,recv?');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -38335,101 +35014,101 @@ Opal.modules["opal/nodes/while"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
-      (function($base, $super, $parent_nesting) {
+      (function($base, $super) {
         var self = $klass($base, $super, 'WhileNode');
 
-        var $nesting = [self].concat($parent_nesting), $WhileNode_compile$1, $WhileNode_compile_with_redo$5, $WhileNode_compile_without_redo$6, $WhileNode_compile_while$7, $WhileNode_while_open$9, $WhileNode_while_close$10, $WhileNode_uses_redo$ques$11, $WhileNode_wrap_in_closure$ques$12;
-
+        
         
         self.$handle("while");
         self.$children("test", "body");
         
-        Opal.def(self, '$compile', $WhileNode_compile$1 = function $$compile() {
-          var $$2, self = this, test_code = nil;
+        $def(self, '$compile', function $$compile() {
+          var self = this, test_code = nil;
 
           
           test_code = self.$js_truthy(self.$test());
-          $send(self, 'with_temp', [], ($$2 = function(redo_var){var self = $$2.$$s == null ? this : $$2.$$s, $$3;
+          $send(self, 'with_temp', [], function $$1(redo_var){var self = $$1.$$s == null ? this : $$1.$$s;
 
             
             
-            if (redo_var == null) {
-              redo_var = nil;
-            };
-            return $send(self.$compiler(), 'in_while', [], ($$3 = function(){var self = $$3.$$s == null ? this : $$3.$$s, $$4, $writer = nil, body_code = nil;
+            if (redo_var == null) redo_var = nil;;
+            return $send(self.$compiler(), 'in_while', [], function $$2(){var self = $$2.$$s == null ? this : $$2.$$s, $writer = nil, body_code = nil;
 
               
               if ($truthy(self['$wrap_in_closure?']())) {
                 
                 $writer = ["closure", true];
-                $send(self.$while_loop(), '[]=', Opal.to_a($writer));
-                $writer[$rb_minus($writer["length"], 1)];};
+                $send(self.$while_loop(), '[]=', $to_a($writer));
+                $writer[$rb_minus($writer["length"], 1)];
+              };
               
               $writer = ["redo_var", redo_var];
-              $send(self.$while_loop(), '[]=', Opal.to_a($writer));
+              $send(self.$while_loop(), '[]=', $to_a($writer));
               $writer[$rb_minus($writer["length"], 1)];;
-              body_code = $send(self, 'indent', [], ($$4 = function(){var self = $$4.$$s == null ? this : $$4.$$s;
+              body_code = $send(self, 'indent', [], function $$3(){var self = $$3.$$s == null ? this : $$3.$$s;
 
-                return self.$stmt(self.$body())}, $$4.$$s = self, $$4.$$arity = 0, $$4));
+                return self.$stmt(self.$body())}, {$$arity: 0, $$s: self});
               if ($truthy(self['$uses_redo?']())) {
                 return self.$compile_with_redo(test_code, body_code, redo_var)
               } else {
                 return self.$compile_without_redo(test_code, body_code)
-              };}, $$3.$$s = self, $$3.$$arity = 0, $$3));}, $$2.$$s = self, $$2.$$arity = 1, $$2));
+              };}, {$$arity: 0, $$s: self});}, {$$arity: 1, $$s: self});
           if ($truthy(self['$wrap_in_closure?']())) {
-            return self.$wrap("(function() {", "; return nil; })()")
+            if ($truthy(self.$scope().$await_encountered())) {
+              return self.$wrap("(await (async function() {", "; return nil; })())")
+            } else {
+              return self.$wrap("(function() {", "; return nil; })()")
+            }
           } else {
             return nil
           };
-        }, $WhileNode_compile$1.$$arity = 0);
+        }, 0);
         self.$private();
         
-        Opal.def(self, '$compile_with_redo', $WhileNode_compile_with_redo$5 = function $$compile_with_redo(test_code, body_code, redo_var) {
+        $def(self, '$compile_with_redo', function $$compile_with_redo(test_code, body_code, redo_var) {
           var self = this;
 
           
           self.$push("" + (redo_var) + " = false; ");
           return self.$compile_while([redo_var, " || ", test_code], ["" + (redo_var) + " = false;", body_code]);
-        }, $WhileNode_compile_with_redo$5.$$arity = 3);
+        }, 3);
         
-        Opal.def(self, '$compile_without_redo', $WhileNode_compile_without_redo$6 = function $$compile_without_redo(test_code, body_code) {
+        $def(self, '$compile_without_redo', function $$compile_without_redo(test_code, body_code) {
           var self = this;
 
           return self.$compile_while([test_code], [body_code])
-        }, $WhileNode_compile_without_redo$6.$$arity = 2);
+        }, 2);
         
-        Opal.def(self, '$compile_while', $WhileNode_compile_while$7 = function $$compile_while(test_code, body_code) {
-          var $$8, self = this;
+        $def(self, '$compile_while', function $$compile_while(test_code, body_code) {
+          var self = this;
 
           
-          $send(self, 'push', [self.$while_open()].concat(Opal.to_a(test_code)).concat([self.$while_close()]));
-          $send(self, 'indent', [], ($$8 = function(){var self = $$8.$$s == null ? this : $$8.$$s;
+          $send(self, 'push', [self.$while_open()].concat($to_a(test_code)).concat([self.$while_close()]));
+          $send(self, 'indent', [], function $$4(){var self = $$4.$$s == null ? this : $$4.$$s;
 
-            return $send(self, 'line', Opal.to_a(body_code))}, $$8.$$s = self, $$8.$$arity = 0, $$8));
+            return $send(self, 'line', $to_a(body_code))}, {$$arity: 0, $$s: self});
           return self.$line("}");
-        }, $WhileNode_compile_while$7.$$arity = 2);
+        }, 2);
         
-        Opal.def(self, '$while_open', $WhileNode_while_open$9 = function $$while_open() {
-          var self = this;
-
+        $def(self, '$while_open', function $$while_open() {
+          
           return "while ("
-        }, $WhileNode_while_open$9.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$while_close', $WhileNode_while_close$10 = function $$while_close() {
-          var self = this;
-
+        $def(self, '$while_close', function $$while_close() {
+          
           return ") {"
-        }, $WhileNode_while_close$10.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$uses_redo?', $WhileNode_uses_redo$ques$11 = function() {
+        $def(self, '$uses_redo?', function $WhileNode_uses_redo$ques$5() {
           var self = this;
 
           return self.$while_loop()['$[]']("use_redo")
-        }, $WhileNode_uses_redo$ques$11.$$arity = 0);
-        return (Opal.def(self, '$wrap_in_closure?', $WhileNode_wrap_in_closure$ques$12 = function() {
+        }, 0);
+        return $def(self, '$wrap_in_closure?', function $WhileNode_wrap_in_closure$ques$6() {
           var self = this, $ret_or_1 = nil;
 
           if ($truthy(($ret_or_1 = self['$expr?']()))) {
@@ -38437,85 +35116,73 @@ Opal.modules["opal/nodes/while"] = function(Opal) {
           } else {
             return self['$recv?']()
           }
-        }, $WhileNode_wrap_in_closure$ques$12.$$arity = 0), nil) && 'wrap_in_closure?';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('Base'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'UntilNode');
 
-        var $nesting = [self].concat($parent_nesting), $UntilNode_while_open$13, $UntilNode_while_close$14;
-
+        
         
         self.$handle("until");
         self.$private();
         
-        Opal.def(self, '$while_open', $UntilNode_while_open$13 = function $$while_open() {
-          var self = this;
-
+        $def(self, '$while_open', function $$while_open() {
+          
           return "while (!("
-        }, $UntilNode_while_open$13.$$arity = 0);
-        return (Opal.def(self, '$while_close', $UntilNode_while_close$14 = function $$while_close() {
-          var self = this;
-
+        }, 0);
+        return $def(self, '$while_close', function $$while_close() {
+          
           return ")) {"
-        }, $UntilNode_while_close$14.$$arity = 0), nil) && 'while_close';
-      })($nesting[0], $$($nesting, 'WhileNode'), $nesting);
-      (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('WhileNode'));
+      (function($base, $super) {
         var self = $klass($base, $super, 'WhilePostNode');
 
-        var $nesting = [self].concat($parent_nesting), $WhilePostNode_compile_while$15, $WhilePostNode_while_close$17;
-
+        
         
         self.$handle("while_post");
         self.$private();
         
-        Opal.def(self, '$compile_while', $WhilePostNode_compile_while$15 = function $$compile_while(test_code, body_code) {
-          var $$16, self = this;
+        $def(self, '$compile_while', function $$compile_while(test_code, body_code) {
+          var self = this;
 
           
           self.$push("do {");
-          $send(self, 'indent', [], ($$16 = function(){var self = $$16.$$s == null ? this : $$16.$$s;
-
-            return $send(self, 'line', Opal.to_a(body_code))}, $$16.$$s = self, $$16.$$arity = 0, $$16));
-          return $send(self, 'line', ["} ", self.$while_open()].concat(Opal.to_a(test_code)).concat([self.$while_close()]));
-        }, $WhilePostNode_compile_while$15.$$arity = 2);
-        return (Opal.def(self, '$while_close', $WhilePostNode_while_close$17 = function $$while_close() {
-          var self = this;
+          $send(self, 'indent', [], function $$7(){var self = $$7.$$s == null ? this : $$7.$$s;
 
+            return $send(self, 'line', $to_a(body_code))}, {$$arity: 0, $$s: self});
+          return $send(self, 'line', ["} ", self.$while_open()].concat($to_a(test_code)).concat([self.$while_close()]));
+        }, 2);
+        return $def(self, '$while_close', function $$while_close() {
+          
           return ");"
-        }, $WhilePostNode_while_close$17.$$arity = 0), nil) && 'while_close';
-      })($nesting[0], $$($nesting, 'WhileNode'), $nesting);
-      return (function($base, $super, $parent_nesting) {
+        }, 0);
+      })($nesting[0], $$('WhileNode'));
+      return (function($base, $super) {
         var self = $klass($base, $super, 'UntilPostNode');
 
-        var $nesting = [self].concat($parent_nesting), $UntilPostNode_while_open$18, $UntilPostNode_while_close$19;
-
+        
         
         self.$handle("until_post");
         self.$private();
         
-        Opal.def(self, '$while_open', $UntilPostNode_while_open$18 = function $$while_open() {
-          var self = this;
-
+        $def(self, '$while_open', function $$while_open() {
+          
           return "while(!("
-        }, $UntilPostNode_while_open$18.$$arity = 0);
-        return (Opal.def(self, '$while_close', $UntilPostNode_while_close$19 = function $$while_close() {
-          var self = this;
-
+        }, 0);
+        return $def(self, '$while_close', function $$while_close() {
+          
           return "));"
-        }, $UntilPostNode_while_close$19.$$arity = 0), nil) && 'while_close';
-      })($nesting[0], $$($nesting, 'WhilePostNode'), $nesting);
+        }, 0);
+      })($nesting[0], $$('WhilePostNode'));
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/hash"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $send = Opal.send, $truthy = Opal.truthy, $hash2 = Opal.hash2;
+Opal.modules["opal/nodes/hash"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $to_a = Opal.to_a, $send = Opal.send, $eqeqeq = Opal.eqeqeq, $def = Opal.def, $truthy = Opal.truthy, $eqeq = Opal.eqeq, $to_ary = Opal.to_ary, $hash2 = Opal.hash2, $rb_minus = Opal.rb_minus;
 
-  Opal.add_stubs(['$require', '$handle', '$attr_accessor', '$each', '$children', '$type', '$===', '$<<', '$[]', '$all?', '$keys', '$include?', '$has_kwsplat', '$compile_merge', '$simple_keys?', '$compile_hash2', '$compile_hash', '$helper', '$==', '$empty?', '$expr', '$s', '$each_with_index', '$push', '$wrap', '$times', '$size', '$inspect', '$to_s', '$values', '$[]=', '$-', '$join', '$value']);
+  Opal.add_stubs('require,handle,attr_accessor,each,children,===,type,<<,[],all?,keys,include?,has_kwsplat,compile_merge,simple_keys?,compile_hash2,compile_hash,helper,==,empty?,expr,s,each_with_index,push,wrap,times,size,inspect,to_s,values,[]=,-,join,value');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -38526,65 +35193,59 @@ Opal.modules["opal/nodes/hash"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
-      (function($base, $super, $parent_nesting) {
+      (function($base, $super) {
         var self = $klass($base, $super, 'HashNode');
 
-        var $nesting = [self].concat($parent_nesting), $HashNode_initialize$1, $HashNode_simple_keys$ques$3, $HashNode_compile$5, $HashNode_compile_merge$6, $HashNode_compile_hash$9, $HashNode_compile_hash2$11;
-
+        
         
         self.$handle("hash");
         self.$attr_accessor("has_kwsplat", "keys", "values");
         
-        Opal.def(self, '$initialize', $HashNode_initialize$1 = function $$initialize($a) {
-          var $post_args, $$2, $iter = $HashNode_initialize$1.$$p, $yield = $iter || nil, self = this, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        $def(self, '$initialize', function $$initialize($a) {
+          var $post_args, $rest_arg, $yield = $$initialize.$$p || nil, self = this;
 
-          if ($iter) $HashNode_initialize$1.$$p = null;
-          // Prepare super implicit arguments
-          for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-            $zuper[$zuper_i] = arguments[$zuper_i];
-          }
+          delete $$initialize.$$p;
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
-          ;
-          $send2(self, $find_super(self, 'initialize', $HashNode_initialize$1, false, true), 'initialize', $zuper, $iter);
+          $post_args = Opal.slice.call(arguments);
+          
+          $rest_arg = $post_args;;
+          $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', $to_a($rest_arg), $yield);
           self.has_kwsplat = false;
           self.keys = [];
           self.values = [];
-          return $send(self.$children(), 'each', [], ($$2 = function(child){var self = $$2.$$s == null ? this : $$2.$$s, $case = nil;
+          return $send(self.$children(), 'each', [], function $$1(child){var self = $$1.$$s == null ? this : $$1.$$s, $ret_or_1 = nil;
             if (self.keys == null) self.keys = nil;
             if (self.values == null) self.values = nil;
 
             
             
-            if (child == null) {
-              child = nil;
-            };
-            return (function() {$case = child.$type();
-            if ("kwsplat"['$===']($case)) {return (self.has_kwsplat = true)}
-            else if ("pair"['$===']($case)) {
-            self.keys['$<<'](child.$children()['$[]'](0));
-            return self.values['$<<'](child.$children()['$[]'](1));}
-            else { return nil }})();}, $$2.$$s = self, $$2.$$arity = 1, $$2));
-        }, $HashNode_initialize$1.$$arity = -1);
+            if (child == null) child = nil;;
+            if ($eqeqeq("kwsplat", ($ret_or_1 = child.$type()))) {
+              return (self.has_kwsplat = true)
+            } else if ($eqeqeq("pair", $ret_or_1)) {
+              
+              self.keys['$<<'](child.$children()['$[]'](0));
+              return self.values['$<<'](child.$children()['$[]'](1));
+            } else {
+              return nil
+            };}, {$$arity: 1, $$s: self});
+        }, -1);
         
-        Opal.def(self, '$simple_keys?', $HashNode_simple_keys$ques$3 = function() {
-          var $$4, self = this;
-
-          return $send(self.$keys(), 'all?', [], ($$4 = function(key){var self = $$4.$$s == null ? this : $$4.$$s;
+        $def(self, '$simple_keys?', function $HashNode_simple_keys$ques$2() {
+          var self = this;
 
+          return $send(self.$keys(), 'all?', [], function $$3(key){
             
             
-            if (key == null) {
-              key = nil;
-            };
-            return ["sym", "str"]['$include?'](key.$type());}, $$4.$$s = self, $$4.$$arity = 1, $$4))
-        }, $HashNode_simple_keys$ques$3.$$arity = 0);
+            if (key == null) key = nil;;
+            return ["sym", "str"]['$include?'](key.$type());}, 1)
+        }, 0);
         
-        Opal.def(self, '$compile', $HashNode_compile$5 = function $$compile() {
+        $def(self, '$compile', function $$compile() {
           var self = this;
 
           if ($truthy(self.$has_kwsplat())) {
@@ -38594,143 +35255,120 @@ Opal.modules["opal/nodes/hash"] = function(Opal) {
           } else {
             return self.$compile_hash()
           }
-        }, $HashNode_compile$5.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_merge', $HashNode_compile_merge$6 = function $$compile_merge() {
-          var $a, $$7, $$8, self = this, result = nil, seq = nil;
+        $def(self, '$compile_merge', function $$compile_merge() {
+          var $a, self = this, result = nil, seq = nil;
 
           
           self.$helper("hash");
           $a = [[], []], (result = $a[0]), (seq = $a[1]), $a;
-          $send(self.$children(), 'each', [], ($$7 = function(child){var self = $$7.$$s == null ? this : $$7.$$s;
+          $send(self.$children(), 'each', [], function $$4(child){var self = $$4.$$s == null ? this : $$4.$$s;
 
             
             
-            if (child == null) {
-              child = nil;
-            };
-            if (child.$type()['$==']("kwsplat")) {
+            if (child == null) child = nil;;
+            if ($eqeq(child.$type(), "kwsplat")) {
               
-              if ($truthy(seq['$empty?']())) {
-              } else {
-                result['$<<'](self.$expr($send(self, 's', ["hash"].concat(Opal.to_a(seq)))))
+              if (!$truthy(seq['$empty?']())) {
+                result['$<<'](self.$expr($send(self, 's', ["hash"].concat($to_a(seq)))))
               };
               result['$<<'](self.$expr(child));
               return (seq = []);
             } else {
               return seq['$<<'](child)
-            };}, $$7.$$s = self, $$7.$$arity = 1, $$7));
-          if ($truthy(seq['$empty?']())) {
-          } else {
-            result['$<<'](self.$expr($send(self, 's', ["hash"].concat(Opal.to_a(seq)))))
+            };}, {$$arity: 1, $$s: self});
+          if (!$truthy(seq['$empty?']())) {
+            result['$<<'](self.$expr($send(self, 's', ["hash"].concat($to_a(seq)))))
           };
-          return $send(result, 'each_with_index', [], ($$8 = function(fragment, idx){var self = $$8.$$s == null ? this : $$8.$$s;
+          return $send(result, 'each_with_index', [], function $$5(fragment, idx){var self = $$5.$$s == null ? this : $$5.$$s;
 
             
             
-            if (fragment == null) {
-              fragment = nil;
-            };
+            if (fragment == null) fragment = nil;;
             
-            if (idx == null) {
-              idx = nil;
-            };
-            if (idx['$=='](0)) {
+            if (idx == null) idx = nil;;
+            if ($eqeq(idx, 0)) {
               return self.$push(fragment)
             } else {
               return self.$push(".$merge(", fragment, ")")
-            };}, $$8.$$s = self, $$8.$$arity = 2, $$8));
-        }, $HashNode_compile_merge$6.$$arity = 0);
+            };}, {$$arity: 2, $$s: self});
+        }, 0);
         
-        Opal.def(self, '$compile_hash', $HashNode_compile_hash$9 = function $$compile_hash() {
-          var $$10, self = this;
+        $def(self, '$compile_hash', function $$compile_hash() {
+          var self = this;
 
           
           self.$helper("hash");
-          $send(self.$children(), 'each_with_index', [], ($$10 = function(pair, idx){var self = $$10.$$s == null ? this : $$10.$$s, $a, $b, key = nil, value = nil;
+          $send(self.$children(), 'each_with_index', [], function $$6(pair, idx){var $a, $b, self = $$6.$$s == null ? this : $$6.$$s, key = nil, value = nil;
 
             
             
-            if (pair == null) {
-              pair = nil;
-            };
+            if (pair == null) pair = nil;;
             
-            if (idx == null) {
-              idx = nil;
-            };
-            $b = pair.$children(), $a = Opal.to_ary($b), (key = ($a[0] == null ? nil : $a[0])), (value = ($a[1] == null ? nil : $a[1])), $b;
-            if (idx['$=='](0)) {
-            } else {
+            if (idx == null) idx = nil;;
+            $b = pair.$children(), $a = $to_ary($b), (key = ($a[0] == null ? nil : $a[0])), (value = ($a[1] == null ? nil : $a[1])), $b;
+            if (!$eqeq(idx, 0)) {
               self.$push(", ")
             };
-            return self.$push(self.$expr(key), ", ", self.$expr(value));}, $$10.$$s = self, $$10.$$arity = 2, $$10));
+            return self.$push(self.$expr(key), ", ", self.$expr(value));}, {$$arity: 2, $$s: self});
           return self.$wrap("$hash(", ")");
-        }, $HashNode_compile_hash$9.$$arity = 0);
-        return (Opal.def(self, '$compile_hash2', $HashNode_compile_hash2$11 = function $$compile_hash2() {
-          var $a, $$12, $$13, self = this, hash_obj = nil, hash_keys = nil;
+        }, 0);
+        return $def(self, '$compile_hash2', function $$compile_hash2() {
+          var $a, self = this, hash_obj = nil, hash_keys = nil;
 
           
           $a = [$hash2([], {}), []], (hash_obj = $a[0]), (hash_keys = $a[1]), $a;
           self.$helper("hash2");
-          $send(self.$keys().$size(), 'times', [], ($$12 = function(idx){var self = $$12.$$s == null ? this : $$12.$$s, key = nil, $writer = nil;
+          $send(self.$keys().$size(), 'times', [], function $$7(idx){var self = $$7.$$s == null ? this : $$7.$$s, key = nil, $writer = nil;
 
             
             
-            if (idx == null) {
-              idx = nil;
-            };
+            if (idx == null) idx = nil;;
             key = self.$keys()['$[]'](idx).$children()['$[]'](0).$to_s().$inspect();
-            if ($truthy(hash_obj['$include?'](key))) {
-            } else {
+            if (!$truthy(hash_obj['$include?'](key))) {
               hash_keys['$<<'](key)
             };
             
             $writer = [key, self.$expr(self.$values()['$[]'](idx))];
-            $send(hash_obj, '[]=', Opal.to_a($writer));
-            return $writer[$rb_minus($writer["length"], 1)];;}, $$12.$$s = self, $$12.$$arity = 1, $$12));
-          $send(hash_keys, 'each_with_index', [], ($$13 = function(key, idx){var self = $$13.$$s == null ? this : $$13.$$s;
+            $send(hash_obj, '[]=', $to_a($writer));
+            return $writer[$rb_minus($writer["length"], 1)];;}, {$$arity: 1, $$s: self});
+          $send(hash_keys, 'each_with_index', [], function $$8(key, idx){var self = $$8.$$s == null ? this : $$8.$$s;
 
             
             
-            if (key == null) {
-              key = nil;
-            };
+            if (key == null) key = nil;;
             
-            if (idx == null) {
-              idx = nil;
-            };
-            if (idx['$=='](0)) {
-            } else {
+            if (idx == null) idx = nil;;
+            if (!$eqeq(idx, 0)) {
               self.$push(", ")
             };
             self.$push("" + (key) + ": ");
-            return self.$push(hash_obj['$[]'](key));}, $$13.$$s = self, $$13.$$arity = 2, $$13));
-          return self.$wrap("" + "$hash2([" + (hash_keys.$join(", ")) + "], {", "})");
-        }, $HashNode_compile_hash2$11.$$arity = 0), nil) && 'compile_hash2';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
-      return (function($base, $super, $parent_nesting) {
+            return self.$push(hash_obj['$[]'](key));}, {$$arity: 2, $$s: self});
+          return self.$wrap("$hash2([" + (hash_keys.$join(", ")) + "], {", "})");
+        }, 0);
+      })($nesting[0], $$('Base'));
+      return (function($base, $super) {
         var self = $klass($base, $super, 'KwSplatNode');
 
-        var $nesting = [self].concat($parent_nesting), $KwSplatNode_compile$14;
-
+        
         
         self.$handle("kwsplat");
         self.$children("value");
-        return (Opal.def(self, '$compile', $KwSplatNode_compile$14 = function $$compile() {
+        return $def(self, '$compile', function $$compile() {
           var self = this;
 
           return self.$push("Opal.to_hash(", self.$expr(self.$value()), ")")
-        }, $KwSplatNode_compile$14.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting);
+        }, 0);
+      })($nesting[0], $$('Base'));
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/array"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send;
+Opal.modules["opal/nodes/array"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$empty?', '$children', '$push', '$each', '$==', '$type', '$expr', '$<<', '$fragment']);
+  Opal.add_stubs('require,handle,empty?,children,push,each,==,type,expr,<<,fragment');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -38741,29 +35379,27 @@ Opal.modules["opal/nodes/array"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'ArrayNode');
 
-        var $nesting = [self].concat($parent_nesting), $ArrayNode_compile$1;
-
+        
         
         self.$handle("array");
-        return (Opal.def(self, '$compile', $ArrayNode_compile$1 = function $$compile() {
-          var $a, $$2, self = this, code = nil, work = nil, join = nil;
+        return $def(self, '$compile', function $$compile() {
+          var $a, self = this, code = nil, work = nil, join = nil;
 
           
           if ($truthy(self.$children()['$empty?']())) {
-            return self.$push("[]")};
+            return self.$push("[]")
+          };
           $a = [[], []], (code = $a[0]), (work = $a[1]), $a;
-          $send(self.$children(), 'each', [], ($$2 = function(child){var self = $$2.$$s == null ? this : $$2.$$s, splat = nil, part = nil;
+          $send(self.$children(), 'each', [], function $$1(child){var self = $$1.$$s == null ? this : $$1.$$s, splat = nil, part = nil;
 
             
             
-            if (child == null) {
-              child = nil;
-            };
+            if (child == null) child = nil;;
             splat = child.$type()['$==']("splat");
             part = self.$expr(child);
             if ($truthy(splat)) {
@@ -38786,14 +35422,12 @@ Opal.modules["opal/nodes/array"] = function(Opal) {
               return (work = []);
             } else {
               
-              if ($truthy(work['$empty?']())) {
-              } else {
+              if (!$truthy(work['$empty?']())) {
                 work['$<<'](self.$fragment(", "))
               };
               return work['$<<'](part);
-            };}, $$2.$$s = self, $$2.$$arity = 1, $$2));
-          if ($truthy(work['$empty?']())) {
-          } else {
+            };}, {$$arity: 1, $$s: self});
+          if (!$truthy(work['$empty?']())) {
             
             join = [self.$fragment("["), work, self.$fragment("]")];
             if ($truthy(code['$empty?']())) {
@@ -38803,17 +35437,16 @@ Opal.modules["opal/nodes/array"] = function(Opal) {
             };
           };
           return self.$push(code);
-        }, $ArrayNode_compile$1.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+        }, 0);
+      })($nesting[0], $$('Base'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/defined"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $slice = Opal.slice, $send = Opal.send, $range = Opal.range;
+Opal.modules["opal/nodes/defined"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $eqeqeq = Opal.eqeqeq, $eqeq = Opal.eqeq, $def = Opal.def, $truthy = Opal.truthy, $to_a = Opal.to_a, $slice = Opal.slice, $send = Opal.send, $range = Opal.range;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$type', '$value', '$===', '$push', '$inspect', '$to_s', '$==', '$size', '$[]', '$compile_defined_send', '$wrap', '$compile_defined_ivar', '$compile_defined_super', '$compile_defined_yield', '$compile_defined_xstr', '$compile_defined_const', '$compile_defined_cvar', '$compile_defined_gvar', '$compile_defined_back_ref', '$compile_defined_nth_ref', '$compile_defined_array', '$respond_to?', '$__send__', '$new_temp', '$scope', '$expr', '$wrap_with_try_catch', '$mid_to_jsid', '$compile_defined', '$compile_send_recv_doesnt_raise', '$each', '$s', '$uses_block!', '$block_name', '$find_parent_def', '$nil?', '$class_variable_owner', '$helper', '$include?', '$each_with_index']);
+  Opal.add_stubs('require,handle,children,===,type,value,push,inspect,to_s,==,[],size,compile_defined_send,wrap,compile_defined_ivar,compile_defined_super,compile_defined_yield,compile_defined_xstr,compile_defined_const,compile_defined_cvar,compile_defined_gvar,compile_defined_back_ref,compile_defined_nth_ref,compile_defined_array,respond_to?,__send__,new_temp,scope,expr,wrap_with_try_catch,mid_to_jsid,compile_defined,compile_send_recv_doesnt_raise,self,each,s,uses_block!,block_name,find_parent_def,nil?,relative_access,absolute_const,top_scope,class_variable_owner,helper,include?,each_with_index');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -38824,87 +35457,98 @@ Opal.modules["opal/nodes/defined"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'DefinedNode');
 
-        var $nesting = [self].concat($parent_nesting), $DefinedNode_compile$1, $DefinedNode_compile_defined$2, $DefinedNode_wrap_with_try_catch$3, $DefinedNode_compile_send_recv_doesnt_raise$4, $DefinedNode_compile_defined_send$5, $DefinedNode_compile_defined_ivar$7, $DefinedNode_compile_defined_super$8, $DefinedNode_compile_defined_yield$9, $DefinedNode_compile_defined_xstr$10, $DefinedNode_compile_defined_const$11, $DefinedNode_compile_defined_cvar$12, $DefinedNode_compile_defined_gvar$13, $DefinedNode_compile_defined_back_ref$14, $DefinedNode_compile_defined_nth_ref$15, $DefinedNode_compile_defined_array$16;
-
+        
         
         self.$handle("defined?");
         self.$children("value");
         
-        Opal.def(self, '$compile', $DefinedNode_compile$1 = function $$compile() {
-          var self = this, $case = nil, $ret_or_1 = nil;
+        $def(self, '$compile', function $$compile() {
+          var self = this, $ret_or_1 = nil;
 
-          return (function() {$case = self.$value().$type();
-          if ("self"['$===']($case) || "nil"['$===']($case) || "false"['$===']($case) || "true"['$===']($case)) {return self.$push(self.$value().$type().$to_s().$inspect())}
-          else if ("lvasgn"['$===']($case) || "ivasgn"['$===']($case) || "gvasgn"['$===']($case) || "cvasgn"['$===']($case) || "casgn"['$===']($case) || "op_asgn"['$===']($case) || "or_asgn"['$===']($case) || "and_asgn"['$===']($case)) {return self.$push("'assignment'")}
-          else if ("lvar"['$===']($case)) {return self.$push("'local-variable'")}
-          else if ("begin"['$===']($case)) {if ($truthy((function() {if ($truthy(($ret_or_1 = self.$value().$children().$size()['$=='](1)))) {
-            return self.$value().$children()['$[]'](0).$type()['$==']("masgn")
-          } else {
-            return $ret_or_1
-          }; return nil; })())) {
+          if (($eqeqeq("self", ($ret_or_1 = self.$value().$type())) || (($eqeqeq("nil", $ret_or_1) || (($eqeqeq("false", $ret_or_1) || ($eqeqeq("true", $ret_or_1)))))))) {
+            return self.$push(self.$value().$type().$to_s().$inspect())
+          } else if (($eqeqeq("lvasgn", $ret_or_1) || (($eqeqeq("ivasgn", $ret_or_1) || (($eqeqeq("gvasgn", $ret_or_1) || (($eqeqeq("cvasgn", $ret_or_1) || (($eqeqeq("casgn", $ret_or_1) || (($eqeqeq("op_asgn", $ret_or_1) || (($eqeqeq("or_asgn", $ret_or_1) || ($eqeqeq("and_asgn", $ret_or_1)))))))))))))))) {
             return self.$push("'assignment'")
+          } else if ($eqeqeq("lvar", $ret_or_1)) {
+            return self.$push("'local-variable'")
+          } else if ($eqeqeq("begin", $ret_or_1)) {
+            if (($eqeq(self.$value().$children().$size(), 1) && ($eqeq(self.$value().$children()['$[]'](0).$type(), "masgn")))) {
+              return self.$push("'assignment'")
+            } else {
+              return self.$push("'expression'")
+            }
+          } else if ($eqeqeq("send", $ret_or_1)) {
+            
+            self.$compile_defined_send(self.$value());
+            return self.$wrap("(", " ? 'method' : nil)");
+          } else if ($eqeqeq("ivar", $ret_or_1)) {
+            
+            self.$compile_defined_ivar(self.$value());
+            return self.$wrap("(", " ? 'instance-variable' : nil)");
+          } else if (($eqeqeq("zsuper", $ret_or_1) || ($eqeqeq("super", $ret_or_1)))) {
+            return self.$compile_defined_super()
+          } else if ($eqeqeq("yield", $ret_or_1)) {
+            
+            self.$compile_defined_yield();
+            return self.$wrap("(", " ? 'yield' : nil)");
+          } else if ($eqeqeq("xstr", $ret_or_1)) {
+            return self.$compile_defined_xstr(self.$value())
+          } else if ($eqeqeq("const", $ret_or_1)) {
+            
+            self.$compile_defined_const(self.$value());
+            return self.$wrap("(", " ? 'constant' : nil)");
+          } else if ($eqeqeq("cvar", $ret_or_1)) {
+            
+            self.$compile_defined_cvar(self.$value());
+            return self.$wrap("(", " ? 'class variable' : nil)");
+          } else if ($eqeqeq("gvar", $ret_or_1)) {
+            
+            self.$compile_defined_gvar(self.$value());
+            return self.$wrap("(", " ? 'global-variable' : nil)");
+          } else if ($eqeqeq("back_ref", $ret_or_1)) {
+            
+            self.$compile_defined_back_ref();
+            return self.$wrap("(", " ? 'global-variable' : nil)");
+          } else if ($eqeqeq("nth_ref", $ret_or_1)) {
+            
+            self.$compile_defined_nth_ref();
+            return self.$wrap("(", " ? 'global-variable' : nil)");
+          } else if ($eqeqeq("array", $ret_or_1)) {
+            
+            self.$compile_defined_array(self.$value());
+            return self.$wrap("(", " ? 'expression' : nil)");
           } else {
             return self.$push("'expression'")
-          }}
-          else if ("send"['$===']($case)) {
-          self.$compile_defined_send(self.$value());
-          return self.$wrap("(", " ? 'method' : nil)");}
-          else if ("ivar"['$===']($case)) {
-          self.$compile_defined_ivar(self.$value());
-          return self.$wrap("(", " ? 'instance-variable' : nil)");}
-          else if ("zsuper"['$===']($case) || "super"['$===']($case)) {return self.$compile_defined_super()}
-          else if ("yield"['$===']($case)) {
-          self.$compile_defined_yield();
-          return self.$wrap("(", " ? 'yield' : nil)");}
-          else if ("xstr"['$===']($case)) {return self.$compile_defined_xstr(self.$value())}
-          else if ("const"['$===']($case)) {
-          self.$compile_defined_const(self.$value());
-          return self.$wrap("(", " ? 'constant' : nil)");}
-          else if ("cvar"['$===']($case)) {
-          self.$compile_defined_cvar(self.$value());
-          return self.$wrap("(", " ? 'class variable' : nil)");}
-          else if ("gvar"['$===']($case)) {
-          self.$compile_defined_gvar(self.$value());
-          return self.$wrap("(", " ? 'global-variable' : nil)");}
-          else if ("back_ref"['$===']($case)) {
-          self.$compile_defined_back_ref();
-          return self.$wrap("(", " ? 'global-variable' : nil)");}
-          else if ("nth_ref"['$===']($case)) {
-          self.$compile_defined_nth_ref();
-          return self.$wrap("(", " ? 'global-variable' : nil)");}
-          else if ("array"['$===']($case)) {
-          self.$compile_defined_array(self.$value());
-          return self.$wrap("(", " ? 'expression' : nil)");}
-          else {return self.$push("'expression'")}})()
-        }, $DefinedNode_compile$1.$$arity = 0);
-        
-        Opal.def(self, '$compile_defined', $DefinedNode_compile_defined$2 = function $$compile_defined(node) {
+          }
+        }, 0);
+        
+        $def(self, '$compile_defined', function $$compile_defined(node) {
           var self = this, type = nil, node_tmp = nil;
 
           
           type = node.$type();
-          if ($truthy(self['$respond_to?']("" + "compile_defined_" + (type)))) {
-            return self.$__send__("" + "compile_defined_" + (type), node)
+          if ($truthy(self['$respond_to?']("compile_defined_" + (type)))) {
+            return self.$__send__("compile_defined_" + (type), node)
           } else {
             
             node_tmp = self.$scope().$new_temp();
-            self.$push("" + "(" + (node_tmp) + " = ", self.$expr(node), ")");
+            self.$push("(" + (node_tmp) + " = ", self.$expr(node), ")");
             return node_tmp;
           };
-        }, $DefinedNode_compile_defined$2.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$wrap_with_try_catch', $DefinedNode_wrap_with_try_catch$3 = function $$wrap_with_try_catch(code) {
+        $def(self, '$wrap_with_try_catch', function $$wrap_with_try_catch(code) {
           var self = this, returning_tmp = nil;
 
           
           returning_tmp = self.$scope().$new_temp();
-          self.$push("" + "(" + (returning_tmp) + " = (function() { try {");
-          self.$push("" + "  return " + (code) + ";");
+          self.$push("(" + (returning_tmp) + " = (function() { try {");
+          self.$push("  return " + (code) + ";");
           self.$push("} catch ($err) {");
           self.$push("  if (Opal.rescue($err, [Opal.Exception])) {");
           self.$push("    try {");
@@ -38913,119 +35557,116 @@ Opal.modules["opal/nodes/defined"] = function(Opal) {
           self.$push("  } else { throw $err; }");
           self.$push("}})())");
           return returning_tmp;
-        }, $DefinedNode_wrap_with_try_catch$3.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$compile_send_recv_doesnt_raise', $DefinedNode_compile_send_recv_doesnt_raise$4 = function $$compile_send_recv_doesnt_raise(recv_code) {
+        $def(self, '$compile_send_recv_doesnt_raise', function $$compile_send_recv_doesnt_raise(recv_code) {
           var self = this;
 
           return self.$wrap_with_try_catch(recv_code)
-        }, $DefinedNode_compile_send_recv_doesnt_raise$4.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$compile_defined_send', $DefinedNode_compile_defined_send$5 = function $$compile_defined_send(node) {
-          var $a, $$6, self = this, recv = nil, method_name = nil, args = nil, mid = nil, recv_code = nil, recv_tmp = nil, recv_value_tmp = nil, meth_tmp = nil;
+        $def(self, '$compile_defined_send', function $$compile_defined_send(node) {
+          var $a, self = this, recv = nil, method_name = nil, args = nil, mid = nil, recv_code = nil, recv_tmp = nil, recv_value_tmp = nil, meth_tmp = nil;
 
           
-          $a = [].concat(Opal.to_a(node)), (recv = ($a[0] == null ? nil : $a[0])), (method_name = ($a[1] == null ? nil : $a[1])), (args = $slice.call($a, 2)), $a;
+          $a = [].concat($to_a(node)), (recv = ($a[0] == null ? nil : $a[0])), (method_name = ($a[1] == null ? nil : $a[1])), (args = $slice.call($a, 2)), $a;
           mid = self.$mid_to_jsid(method_name.$to_s());
           if ($truthy(recv)) {
             
             recv_code = self.$compile_defined(recv);
             self.$push(" && ");
-            if (recv.$type()['$==']("send")) {
+            if ($eqeq(recv.$type(), "send")) {
               
               recv_code = self.$compile_send_recv_doesnt_raise(recv_code);
-              self.$push(" && ");};
+              self.$push(" && ");
+            };
             recv_tmp = self.$scope().$new_temp();
-            self.$push("" + "(" + (recv_tmp) + " = ", recv_code, "" + ", " + (recv_tmp) + ") && ");
+            self.$push("(" + (recv_tmp) + " = ", recv_code, ", " + (recv_tmp) + ") && ");
           } else {
-            recv_tmp = "self"
+            recv_tmp = self.$scope().$self()
           };
           recv_value_tmp = self.$scope().$new_temp();
-          self.$push("" + "(" + (recv_value_tmp) + " = " + (recv_tmp) + ") && ");
+          self.$push("(" + (recv_value_tmp) + " = " + (recv_tmp) + ") && ");
           meth_tmp = self.$scope().$new_temp();
-          self.$push("" + "(((" + (meth_tmp) + " = " + (recv_value_tmp) + (mid) + ") && !" + (meth_tmp) + ".$$stub)");
-          self.$push("" + " || " + (recv_value_tmp) + "['$respond_to_missing?']('" + (method_name) + "'))");
-          $send(args, 'each', [], ($$6 = function(arg){var self = $$6.$$s == null ? this : $$6.$$s, $case = nil;
+          self.$push("(((" + (meth_tmp) + " = " + (recv_value_tmp) + (mid) + ") && !" + (meth_tmp) + ".$$stub)");
+          self.$push(" || " + (recv_value_tmp) + "['$respond_to_missing?']('" + (method_name) + "'))");
+          $send(args, 'each', [], function $$1(arg){var self = $$1.$$s == null ? this : $$1.$$s, $ret_or_1 = nil;
 
             
             
-            if (arg == null) {
-              arg = nil;
-            };
-            return (function() {$case = arg.$type();
-            if ("block_pass"['$===']($case)) {return nil}
-            else {
-            self.$push(" && ");
-            return self.$compile_defined(arg);}})();}, $$6.$$s = self, $$6.$$arity = 1, $$6));
+            if (arg == null) arg = nil;;
+            if ($eqeqeq("block_pass", ($ret_or_1 = arg.$type()))) {
+              return nil
+            } else {
+              
+              self.$push(" && ");
+              return self.$compile_defined(arg);
+            };}, {$$arity: 1, $$s: self});
           self.$wrap("(", ")");
           return "" + (meth_tmp) + "()";
-        }, $DefinedNode_compile_defined_send$5.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$compile_defined_ivar', $DefinedNode_compile_defined_ivar$7 = function $$compile_defined_ivar(node) {
+        $def(self, '$compile_defined_ivar', function $$compile_defined_ivar(node) {
           var self = this, name = nil, tmp = nil;
 
           
           name = node.$children()['$[]'](0).$to_s()['$[]']($range(1, -1, false));
           tmp = self.$scope().$new_temp();
-          self.$push("" + "(" + (tmp) + " = self['" + (name) + "'], " + (tmp) + " != null && " + (tmp) + " !== nil)");
+          self.$push("(" + (tmp) + " = " + (self.$scope().$self()) + "['" + (name) + "'], " + (tmp) + " != null && " + (tmp) + " !== nil)");
           return tmp;
-        }, $DefinedNode_compile_defined_ivar$7.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$compile_defined_super', $DefinedNode_compile_defined_super$8 = function $$compile_defined_super() {
+        $def(self, '$compile_defined_super', function $$compile_defined_super() {
           var self = this;
 
           return self.$push(self.$expr(self.$s("defined_super")))
-        }, $DefinedNode_compile_defined_super$8.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_defined_yield', $DefinedNode_compile_defined_yield$9 = function $$compile_defined_yield() {
-          var self = this, block_name = nil, $ret_or_2 = nil;
+        $def(self, '$compile_defined_yield', function $$compile_defined_yield() {
+          var self = this, block_name = nil, $ret_or_1 = nil;
 
           
           self.$scope()['$uses_block!']();
-          block_name = (function() {if ($truthy(($ret_or_2 = self.$scope().$block_name()))) {
-            return $ret_or_2
-          } else {
-            return self.$scope().$find_parent_def().$block_name()
-          }; return nil; })();
-          self.$push("" + "(" + (block_name) + " != null && " + (block_name) + " !== nil)");
+          block_name = ($truthy(($ret_or_1 = self.$scope().$block_name())) ? ($ret_or_1) : (self.$scope().$find_parent_def().$block_name()));
+          self.$push("(" + (block_name) + " != null && " + (block_name) + " !== nil)");
           return block_name;
-        }, $DefinedNode_compile_defined_yield$9.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_defined_xstr', $DefinedNode_compile_defined_xstr$10 = function $$compile_defined_xstr(node) {
+        $def(self, '$compile_defined_xstr', function $$compile_defined_xstr(node) {
           var self = this;
 
           return self.$push("(typeof(", self.$expr(node), ") !== \"undefined\")")
-        }, $DefinedNode_compile_defined_xstr$10.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$compile_defined_const', $DefinedNode_compile_defined_const$11 = function $$compile_defined_const(node) {
+        $def(self, '$compile_defined_const', function $$compile_defined_const(node) {
           var $a, self = this, const_scope = nil, const_name = nil, const_tmp = nil, const_scope_tmp = nil;
 
           
-          $a = [].concat(Opal.to_a(node)), (const_scope = ($a[0] == null ? nil : $a[0])), (const_name = ($a[1] == null ? nil : $a[1])), $a;
+          $a = [].concat($to_a(node)), (const_scope = ($a[0] == null ? nil : $a[0])), (const_name = ($a[1] == null ? nil : $a[1])), $a;
           const_tmp = self.$scope().$new_temp();
           if ($truthy(const_scope['$nil?']())) {
-            self.$push("" + "(" + (const_tmp) + " = $$($nesting, '" + (const_name) + "', 'skip_raise'))")
-          } else if (const_scope['$=='](self.$s("cbase"))) {
-            self.$push("" + "(" + (const_tmp) + " = $$$('::', '" + (const_name) + "', 'skip_raise'))")
+            self.$push("(" + (const_tmp) + " = " + (self.$scope().$relative_access()) + "('" + (const_name) + "', 'skip_raise'))")
+          } else if ($eqeq(const_scope, self.$s("cbase"))) {
+            self.$push("(" + (const_tmp) + " = " + (self.$top_scope().$absolute_const()) + "('::', '" + (const_name) + "', 'skip_raise'))")
           } else {
             
             const_scope_tmp = self.$compile_defined(const_scope);
-            self.$push("" + " && (" + (const_tmp) + " = $$$(" + (const_scope_tmp) + ", '" + (const_name) + "', 'skip_raise'))");
+            self.$push(" && (" + (const_tmp) + " = " + (self.$top_scope().$absolute_const()) + "(" + (const_scope_tmp) + ", '" + (const_name) + "', 'skip_raise'))");
           };
           return const_tmp;
-        }, $DefinedNode_compile_defined_const$11.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$compile_defined_cvar', $DefinedNode_compile_defined_cvar$12 = function $$compile_defined_cvar(node) {
+        $def(self, '$compile_defined_cvar', function $$compile_defined_cvar(node) {
           var $a, self = this, cvar_name = nil, _ = nil, cvar_tmp = nil;
 
           
-          $a = [].concat(Opal.to_a(node)), (cvar_name = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $a;
+          $a = [].concat($to_a(node)), (cvar_name = ($a[0] == null ? nil : $a[0])), (_ = ($a[1] == null ? nil : $a[1])), $a;
           cvar_tmp = self.$scope().$new_temp();
-          self.$push("" + "(" + (cvar_tmp) + " = " + (self.$class_variable_owner()) + ".$$cvars['" + (cvar_name) + "'], " + (cvar_tmp) + " != null)");
+          self.$push("(" + (cvar_tmp) + " = " + (self.$class_variable_owner()) + ".$$cvars['" + (cvar_name) + "'], " + (cvar_tmp) + " != null)");
           return cvar_tmp;
-        }, $DefinedNode_compile_defined_cvar$12.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$compile_defined_gvar', $DefinedNode_compile_defined_gvar$13 = function $$compile_defined_gvar(node) {
+        $def(self, '$compile_defined_gvar', function $$compile_defined_gvar(node) {
           var self = this, name = nil, gvar_temp = nil;
 
           
@@ -39033,68 +35674,56 @@ Opal.modules["opal/nodes/defined"] = function(Opal) {
           name = node.$children()['$[]'](0).$to_s()['$[]']($range(1, -1, false));
           gvar_temp = self.$scope().$new_temp();
           if ($truthy(["~", "!"]['$include?'](name))) {
-            self.$push("" + "(" + (gvar_temp) + " = ", self.$expr(node), " || true)")
+            self.$push("(" + (gvar_temp) + " = ", self.$expr(node), " || true)")
           } else {
-            self.$push("" + "(" + (gvar_temp) + " = $gvars[" + (name.$inspect()) + "], " + (gvar_temp) + " != null)")
+            self.$push("(" + (gvar_temp) + " = $gvars[" + (name.$inspect()) + "], " + (gvar_temp) + " != null)")
           };
           return gvar_temp;
-        }, $DefinedNode_compile_defined_gvar$13.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$compile_defined_back_ref', $DefinedNode_compile_defined_back_ref$14 = function $$compile_defined_back_ref() {
+        $def(self, '$compile_defined_back_ref', function $$compile_defined_back_ref() {
           var self = this, back_ref_temp = nil;
 
           
           self.$helper("gvars");
           back_ref_temp = self.$scope().$new_temp();
-          self.$push("" + "(" + (back_ref_temp) + " = $gvars['~'], " + (back_ref_temp) + " != null && " + (back_ref_temp) + " !== nil)");
+          self.$push("(" + (back_ref_temp) + " = $gvars['~'], " + (back_ref_temp) + " != null && " + (back_ref_temp) + " !== nil)");
           return back_ref_temp;
-        }, $DefinedNode_compile_defined_back_ref$14.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_defined_nth_ref', $DefinedNode_compile_defined_nth_ref$15 = function $$compile_defined_nth_ref() {
+        $def(self, '$compile_defined_nth_ref', function $$compile_defined_nth_ref() {
           var self = this, nth_ref_tmp = nil;
 
           
           self.$helper("gvars");
           nth_ref_tmp = self.$scope().$new_temp();
-          self.$push("" + "(" + (nth_ref_tmp) + " = $gvars['~'], " + (nth_ref_tmp) + " != null && " + (nth_ref_tmp) + " != nil)");
+          self.$push("(" + (nth_ref_tmp) + " = $gvars['~'], " + (nth_ref_tmp) + " != null && " + (nth_ref_tmp) + " != nil)");
           return nth_ref_tmp;
-        }, $DefinedNode_compile_defined_nth_ref$15.$$arity = 0);
-        return (Opal.def(self, '$compile_defined_array', $DefinedNode_compile_defined_array$16 = function $$compile_defined_array(node) {
-          var $$17, self = this;
+        }, 0);
+        return $def(self, '$compile_defined_array', function $$compile_defined_array(node) {
+          var self = this;
 
-          return $send(node.$children(), 'each_with_index', [], ($$17 = function(child, idx){var self = $$17.$$s == null ? this : $$17.$$s;
+          return $send(node.$children(), 'each_with_index', [], function $$2(child, idx){var self = $$2.$$s == null ? this : $$2.$$s;
 
             
             
-            if (child == null) {
-              child = nil;
-            };
+            if (child == null) child = nil;;
             
-            if (idx == null) {
-              idx = nil;
-            };
-            if (idx['$=='](0)) {
-            } else {
+            if (idx == null) idx = nil;;
+            if (!$eqeq(idx, 0)) {
               self.$push(" && ")
             };
-            return self.$compile_defined(child);}, $$17.$$s = self, $$17.$$arity = 2, $$17))
-        }, $DefinedNode_compile_defined_array$16.$$arity = 1), nil) && 'compile_defined_array';
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+            return self.$compile_defined(child);}, {$$arity: 2, $$s: self})
+        }, 1);
+      })($nesting[0], $$('Base'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/masgn"] = function(Opal) {
-  function $rb_ge(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs >= rhs : lhs['$>='](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send;
+Opal.modules["opal/nodes/masgn"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $const_set = Opal.const_set, $eqeq = Opal.eqeq, $truthy = Opal.truthy, $send = Opal.send, $def = Opal.def, $rb_ge = Opal.rb_ge, $not = Opal.not, $rb_plus = Opal.rb_plus;
 
-  Opal.add_stubs(['$require', '$freeze', '$handle', '$children', '$new_temp', '$scope', '$==', '$type', '$rhs', '$push', '$expr', '$any?', '$size', '$compile_masgn', '$lhs', '$queue_temp', '$take_while', '$!=', '$drop', '$each_with_index', '$compile_assignment', '$empty?', '$shift', '$[]', '$helper', '$<<', '$dup', '$s', '$!', '$>=', '$updated', '$include?', '$+', '$last', '$raise']);
+  Opal.add_stubs('require,freeze,handle,children,new_temp,scope,==,type,rhs,push,expr,any?,size,compile_masgn,lhs,helper,queue_temp,take_while,!=,drop,each_with_index,compile_assignment,empty?,shift,[],<<,dup,s,>=,!,updated,include?,+,last,raise');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -39105,89 +35734,66 @@ Opal.modules["opal/nodes/masgn"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'MassAssignNode');
 
-        var $nesting = [self].concat($parent_nesting), $MassAssignNode_compile$1, $MassAssignNode_compile_masgn$3, $MassAssignNode_compile_assignment$7;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
         
-        Opal.const_set($nesting[0], 'SIMPLE_ASSIGNMENT', ["lvasgn", "ivasgn", "lvar", "gvasgn", "cdecl", "casgn"].$freeze());
+        $const_set($nesting[0], 'SIMPLE_ASSIGNMENT', ["lvasgn", "ivasgn", "lvar", "gvasgn", "cdecl", "casgn"].$freeze());
         self.$handle("masgn");
         self.$children("lhs", "rhs");
         
-        Opal.def(self, '$compile', $MassAssignNode_compile$1 = function $$compile() {
-          var $$2, self = this, array = nil, rhs_len = nil, retval = nil;
+        $def(self, '$compile', function $$compile() {
+          var self = this, array = nil, rhs_len = nil, retval = nil;
 
           
           array = self.$scope().$new_temp();
-          if (self.$rhs().$type()['$==']("array")) {
+          if ($eqeq(self.$rhs().$type(), "array")) {
             
             self.$push("" + (array) + " = ", self.$expr(self.$rhs()));
-            rhs_len = (function() {if ($truthy($send(self.$rhs().$children(), 'any?', [], ($$2 = function(c){var self = $$2.$$s == null ? this : $$2.$$s;
-
+            rhs_len = ($truthy($send(self.$rhs().$children(), 'any?', [], function $$1(c){
               
               
-              if (c == null) {
-                c = nil;
-              };
-              return c.$type()['$==']("splat");}, $$2.$$s = self, $$2.$$arity = 1, $$2)))) {
-              return nil
-            } else {
-              return self.$rhs().$children().$size()
-            }; return nil; })();
+              if (c == null) c = nil;;
+              return c.$type()['$==']("splat");}, 1)) ? (nil) : (self.$rhs().$children().$size()));
             self.$compile_masgn(self.$lhs().$children(), array, rhs_len);
-            self.$push("" + ", " + (array));
-          } else if (self.$rhs().$type()['$==']("begin")) {
-            
-            retval = self.$scope().$new_temp();
-            self.$push("" + (retval) + " = ", self.$expr(self.$rhs()));
-            self.$push("" + ", " + (array) + " = Opal.to_ary(" + (retval) + ")");
-            self.$compile_masgn(self.$lhs().$children(), array);
-            self.$push("" + ", " + (retval));
-            self.$scope().$queue_temp(retval);
+            self.$push(", " + (array));
           } else {
             
+            self.$helper("to_ary");
             retval = self.$scope().$new_temp();
             self.$push("" + (retval) + " = ", self.$expr(self.$rhs()));
-            self.$push("" + ", " + (array) + " = Opal.to_ary(" + (retval) + ")");
+            self.$push(", " + (array) + " = $to_ary(" + (retval) + ")");
             self.$compile_masgn(self.$lhs().$children(), array);
-            self.$push("" + ", " + (retval));
+            self.$push(", " + (retval));
             self.$scope().$queue_temp(retval);
           };
           return self.$scope().$queue_temp(array);
-        }, $MassAssignNode_compile$1.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$compile_masgn', $MassAssignNode_compile_masgn$3 = function $$compile_masgn(lhs_items, array, len) {
-          var $$4, $$5, $$6, self = this, pre_splat = nil, post_splat = nil, splat = nil, part = nil, tmp = nil;
+        $def(self, '$compile_masgn', function $$compile_masgn(lhs_items, array, len) {
+          var self = this, pre_splat = nil, post_splat = nil, splat = nil, part = nil, tmp = nil;
 
           
           
-          if (len == null) {
-            len = nil;
-          };
-          pre_splat = $send(lhs_items, 'take_while', [], ($$4 = function(child){var self = $$4.$$s == null ? this : $$4.$$s;
-
+          if (len == null) len = nil;;
+          pre_splat = $send(lhs_items, 'take_while', [], function $$2(child){
             
             
-            if (child == null) {
-              child = nil;
-            };
-            return child.$type()['$!=']("splat");}, $$4.$$s = self, $$4.$$arity = 1, $$4));
+            if (child == null) child = nil;;
+            return child.$type()['$!=']("splat");}, 1);
           post_splat = lhs_items.$drop(pre_splat.$size());
-          $send(pre_splat, 'each_with_index', [], ($$5 = function(child, idx){var self = $$5.$$s == null ? this : $$5.$$s;
+          $send(pre_splat, 'each_with_index', [], function $$3(child, idx){var self = $$3.$$s == null ? this : $$3.$$s;
 
             
             
-            if (child == null) {
-              child = nil;
-            };
+            if (child == null) child = nil;;
             
-            if (idx == null) {
-              idx = nil;
-            };
-            return self.$compile_assignment(child, array, idx, len);}, $$5.$$s = self, $$5.$$arity = 2, $$5));
+            if (idx == null) idx = nil;;
+            return self.$compile_assignment(child, array, idx, len);}, {$$arity: 2, $$s: self});
           if ($truthy(post_splat['$empty?']())) {
             return nil
           } else {
@@ -39197,7 +35803,7 @@ Opal.modules["opal/nodes/masgn"] = function(Opal) {
               if ($truthy((part = splat.$children()['$[]'](0)))) {
                 
                 self.$helper("slice");
-                part = part.$dup()['$<<'](self.$s("js_tmp", "" + "$slice.call(" + (array) + ", " + (pre_splat.$size()) + ")"));
+                part = part.$dup()['$<<'](self.$s("js_tmp", "$slice.call(" + (array) + ", " + (pre_splat.$size()) + ")"));
                 self.$push(", ");
                 return self.$push(self.$expr(part));
               } else {
@@ -39206,82 +35812,69 @@ Opal.modules["opal/nodes/masgn"] = function(Opal) {
             } else {
               
               tmp = self.$scope().$new_temp();
-              self.$push("" + ", " + (tmp) + " = " + (array) + ".length - " + (post_splat.$size()));
-              self.$push("" + ", " + (tmp) + " = (" + (tmp) + " < " + (pre_splat.$size()) + ") ? " + (pre_splat.$size()) + " : " + (tmp));
+              self.$push(", " + (tmp) + " = " + (array) + ".length - " + (post_splat.$size()));
+              self.$push(", " + (tmp) + " = (" + (tmp) + " < " + (pre_splat.$size()) + ") ? " + (pre_splat.$size()) + " : " + (tmp));
               if ($truthy((part = splat.$children()['$[]'](0)))) {
                 
                 self.$helper("slice");
-                part = part.$dup()['$<<'](self.$s("js_tmp", "" + "$slice.call(" + (array) + ", " + (pre_splat.$size()) + ", " + (tmp) + ")"));
+                part = part.$dup()['$<<'](self.$s("js_tmp", "$slice.call(" + (array) + ", " + (pre_splat.$size()) + ", " + (tmp) + ")"));
                 self.$push(", ");
-                self.$push(self.$expr(part));};
-              $send(post_splat, 'each_with_index', [], ($$6 = function(child, idx){var self = $$6.$$s == null ? this : $$6.$$s;
+                self.$push(self.$expr(part));
+              };
+              $send(post_splat, 'each_with_index', [], function $$4(child, idx){var self = $$4.$$s == null ? this : $$4.$$s;
 
                 
                 
-                if (child == null) {
-                  child = nil;
-                };
+                if (child == null) child = nil;;
                 
-                if (idx == null) {
-                  idx = nil;
-                };
-                if (idx['$=='](0)) {
+                if (idx == null) idx = nil;;
+                if ($eqeq(idx, 0)) {
                   return self.$compile_assignment(child, array, tmp)
                 } else {
                   return self.$compile_assignment(child, array, "" + (tmp) + " + " + (idx))
-                };}, $$6.$$s = self, $$6.$$arity = 2, $$6));
+                };}, {$$arity: 2, $$s: self});
               return self.$scope().$queue_temp(tmp);
             };
           };
-        }, $MassAssignNode_compile_masgn$3.$$arity = -3);
-        return (Opal.def(self, '$compile_assignment', $MassAssignNode_compile_assignment$7 = function $$compile_assignment(child, array, idx, len) {
-          var self = this, assign = nil, $ret_or_1 = nil, part = nil, tmp = nil;
+        }, -3);
+        return $def(self, '$compile_assignment', function $$compile_assignment(child, array, idx, len) {
+          var self = this, assign = nil, part = nil, tmp = nil;
 
           
           
-          if (len == null) {
-            len = nil;
-          };
-          assign = (function() {if ($truthy((function() {if ($truthy(($ret_or_1 = len['$!']()))) {
-            return $ret_or_1
-          } else {
-            return $rb_ge(idx, len)
-          }; return nil; })())) {
-            return self.$s("js_tmp", "" + "(" + (array) + "[" + (idx) + "] == null ? nil : " + (array) + "[" + (idx) + "])")
-          } else {
-            return self.$s("js_tmp", "" + (array) + "[" + (idx) + "]")
-          }; return nil; })();
+          if (len == null) len = nil;;
+          assign = (($not(len) || ($truthy($rb_ge(idx, len)))) ? (self.$s("js_tmp", "(" + (array) + "[" + (idx) + "] == null ? nil : " + (array) + "[" + (idx) + "])")) : (self.$s("js_tmp", "" + (array) + "[" + (idx) + "]")));
           part = child.$updated();
-          if ($truthy($$($nesting, 'SIMPLE_ASSIGNMENT')['$include?'](child.$type()))) {
+          if ($truthy($$('SIMPLE_ASSIGNMENT')['$include?'](child.$type()))) {
             part = part.$updated(nil, $rb_plus(part.$children(), [assign]))
-          } else if (child.$type()['$==']("send")) {
+          } else if ($eqeq(child.$type(), "send")) {
             part = part.$updated(nil, $rb_plus(part.$children(), [assign]))
-          } else if (child.$type()['$==']("attrasgn")) {
+          } else if ($eqeq(child.$type(), "attrasgn")) {
             part.$last()['$<<'](assign)
-          } else if (child.$type()['$==']("mlhs")) {
+          } else if ($eqeq(child.$type(), "mlhs")) {
             
+            self.$helper("to_ary");
             tmp = self.$scope().$new_temp();
-            self.$push("" + ", (" + (tmp) + " = Opal.to_ary(" + (assign.$children()['$[]'](0)) + ")");
+            self.$push(", (" + (tmp) + " = $to_ary(" + (assign.$children()['$[]'](0)) + ")");
             self.$compile_masgn(child.$children(), tmp);
             self.$push(")");
             self.$scope().$queue_temp(tmp);
             return nil;
           } else {
-            self.$raise("" + "Bad child node in masgn LHS: " + (child) + ". LHS: " + (self.$lhs()))
+            self.$raise("Bad child node in masgn LHS: " + (child) + ". LHS: " + (self.$lhs()))
           };
           self.$push(", ");
           return self.$push(self.$expr(part));
-        }, $MassAssignNode_compile_assignment$7.$$arity = -4), nil) && 'compile_assignment';
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+        }, -4);
+      })($nesting[0], $$('Base'), $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/arglist"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy;
+Opal.modules["opal/nodes/arglist"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy, $to_a = Opal.to_a, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$each', '$children', '$==', '$type', '$expr', '$empty?', '$<<', '$fragment', '$push']);
+  Opal.add_stubs('require,handle,each,children,==,type,expr,empty?,<<,fragment,push');
   
   self.$require("opal/nodes/base");
   return (function($base, $parent_nesting) {
@@ -39292,27 +35885,24 @@ Opal.modules["opal/nodes/arglist"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'ArglistNode');
 
-        var $nesting = [self].concat($parent_nesting), $ArglistNode_compile$1;
-
+        
         
         self.$handle("arglist");
-        return (Opal.def(self, '$compile', $ArglistNode_compile$1 = function $$compile() {
-          var $a, $$2, self = this, code = nil, work = nil, join = nil;
+        return $def(self, '$compile', function $$compile() {
+          var $a, self = this, code = nil, work = nil, join = nil;
 
           
           $a = [[], []], (code = $a[0]), (work = $a[1]), $a;
-          $send(self.$children(), 'each', [], ($$2 = function(current){var self = $$2.$$s == null ? this : $$2.$$s, splat = nil, arg = nil;
+          $send(self.$children(), 'each', [], function $$1(current){var self = $$1.$$s == null ? this : $$1.$$s, splat = nil, arg = nil;
 
             
             
-            if (current == null) {
-              current = nil;
-            };
+            if (current == null) current = nil;;
             splat = current.$type()['$==']("splat");
             arg = self.$expr(current);
             if ($truthy(splat)) {
@@ -39335,14 +35925,12 @@ Opal.modules["opal/nodes/arglist"] = function(Opal) {
               return (work = []);
             } else {
               
-              if ($truthy(work['$empty?']())) {
-              } else {
+              if (!$truthy(work['$empty?']())) {
                 work['$<<'](self.$fragment(", "))
               };
               return work['$<<'](arg);
-            };}, $$2.$$s = self, $$2.$$arity = 1, $$2));
-          if ($truthy(work['$empty?']())) {
-          } else {
+            };}, {$$arity: 1, $$s: self});
+          if (!$truthy(work['$empty?']())) {
             
             join = work;
             if ($truthy(code['$empty?']())) {
@@ -39351,18 +35939,17 @@ Opal.modules["opal/nodes/arglist"] = function(Opal) {
               code['$<<'](self.$fragment(".concat(["))['$<<'](join)['$<<'](self.$fragment("])"))
             };
           };
-          return $send(self, 'push', Opal.to_a(code));
-        }, $ArglistNode_compile$1.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+          return $send(self, 'push', $to_a(code));
+        }, 0);
+      })($nesting[0], $$('Base'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/x_string"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send, $range = Opal.range, $lambda = Opal.lambda;
+Opal.modules["opal/nodes/x_string"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send, $def = Opal.def, $defs = Opal.defs, $lambda = Opal.lambda, $eqeqeq = Opal.eqeqeq, $eqeq = Opal.eqeq, $not = Opal.not, $range = Opal.range;
 
-  Opal.add_stubs(['$handle', '$unpack_return', '$children', '$strip_empty_children', '$single_line?', '$compile_single_line', '$each', '$compile_child', '$recv?', '$wrap', '$push', '$private', '$type', '$===', '$source', '$expression', '$loc', '$new', '$scope', '$expr', '$raise', '$shift', '$empty?', '$s', '$==', '$strip', '$=~', '$!', '$pop', '$extract_last_value', '$rstrip', '$expr?', '$end_with?', '$warning', '$compiler', '$line', '$[]', '$size', '$none?', '$first', '$dup', '$nil?', '$any?', '$last']);
+  Opal.add_stubs('handle,unpack_return,children,strip_empty_children,single_line?,compile_single_line,each,compile_child,recv?,wrap,push,==,size,none?,type,end_with?,source,expression,loc,dup,nil?,empty?,rstrip,any?,[],first,shift,last,pop,private,===,include?,self,scope,new,expr,raise,s,strip,=~,!,extract_last_value,expr?,warning,compiler,line');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Opal');
 
@@ -39371,210 +35958,186 @@ Opal.modules["opal/nodes/x_string"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'XStringNode');
 
-        var $nesting = [self].concat($parent_nesting), $XStringNode_compile$1, $XStringNode_compile_child$3, $XStringNode_compile_single_line$4, $XStringNode_extract_last_value$6, $XStringNode_single_line$ques$7, $XStringNode_unpack_return$9, $XStringNode_strip_empty_children$10;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.should_add_semicolon = self.$$prototype.returning = nil;
+        $proto.should_add_semicolon = $proto.returning = nil;
         
         self.$handle("xstr");
         
-        Opal.def(self, '$compile', $XStringNode_compile$1 = function $$compile() {
-          var $$2, self = this, unpacked_children = nil, stripped_children = nil;
+        $def(self, '$compile', function $$compile() {
+          var self = this, unpacked_children = nil, stripped_children = nil;
 
           
           self.should_add_semicolon = false;
           unpacked_children = self.$unpack_return(self.$children());
-          stripped_children = self.$strip_empty_children(unpacked_children);
-          if ($truthy(self['$single_line?'](stripped_children))) {
+          stripped_children = $$('XStringNode').$strip_empty_children(unpacked_children);
+          if ($truthy($$('XStringNode')['$single_line?'](stripped_children))) {
             self.$compile_single_line(stripped_children)
           } else {
-            $send(unpacked_children, 'each', [], ($$2 = function(c){var self = $$2.$$s == null ? this : $$2.$$s;
+            $send(unpacked_children, 'each', [], function $$1(c){var self = $$1.$$s == null ? this : $$1.$$s;
 
               
               
-              if (c == null) {
-                c = nil;
-              };
-              return self.$compile_child(c);}, $$2.$$s = self, $$2.$$arity = 1, $$2))
+              if (c == null) c = nil;;
+              return self.$compile_child(c);}, {$$arity: 1, $$s: self})
           };
           if ($truthy(self['$recv?']())) {
-            self.$wrap("(", ")")};
+            self.$wrap("(", ")")
+          };
           if ($truthy(self.should_add_semicolon)) {
             return self.$push(";")
           } else {
             return nil
           };
-        }, $XStringNode_compile$1.$$arity = 0);
+        }, 0);
+        $defs(self, '$single_line?', function $XStringNode_single_line$ques$2(children) {
+          var $ret_or_1 = nil;
+
+          if ($truthy(($ret_or_1 = children.$size()['$=='](1)))) {
+            return $ret_or_1
+          } else {
+            return $send(children, 'none?', [], function $$3(c){var $ret_or_2 = nil;
+
+              
+              
+              if (c == null) c = nil;;
+              if ($truthy(($ret_or_2 = c.$type()['$==']("str")))) {
+                return c.$loc().$expression().$source()['$end_with?']("\n")
+              } else {
+                return $ret_or_2
+              };}, 1)
+          }
+        }, 1);
+        $defs(self, '$strip_empty_children', function $$strip_empty_children(children) {
+          var $a, empty_line = nil, $ret_or_1 = nil;
+
+          
+          children = children.$dup();
+          empty_line = $lambda(function $$4(child){var $ret_or_1 = nil, $ret_or_2 = nil;
+
+            
+            
+            if (child == null) child = nil;;
+            if ($truthy(($ret_or_1 = child['$nil?']()))) {
+              return $ret_or_1
+            } else {
+              
+              if ($truthy(($ret_or_2 = child.$type()['$==']("str")))) {
+                return child.$loc().$expression().$source().$rstrip()['$empty?']()
+              } else {
+                return $ret_or_2
+              };
+            };}, 1);
+          while ($truthy(($truthy(($ret_or_1 = children['$any?']())) ? (empty_line['$[]'](children.$first())) : ($ret_or_1)))) {
+            children.$shift()
+          };
+          while ($truthy(($truthy(($ret_or_1 = children['$any?']())) ? (empty_line['$[]'](children.$last())) : ($ret_or_1)))) {
+            children.$pop()
+          };
+          return children;
+        }, 1);
         self.$private();
         
-        Opal.def(self, '$compile_child', $XStringNode_compile_child$3 = function $$compile_child(child) {
-          var self = this, $case = nil, value = nil;
+        $def(self, '$compile_child', function $$compile_child(child) {
+          var self = this, $ret_or_1 = nil, value = nil;
 
-          return (function() {$case = child.$type();
-          if ("str"['$===']($case)) {
-          value = child.$loc().$expression().$source();
-          return self.$push($$($nesting, 'Fragment').$new(value, self.$scope(), child));}
-          else if ("begin"['$===']($case) || "gvar"['$===']($case) || "ivar"['$===']($case) || "nil"['$===']($case)) {return self.$push(self.$expr(child))}
-          else {return self.$raise("" + "Unsupported xstr part: " + (child.$type()))}})()
-        }, $XStringNode_compile_child$3.$$arity = 1);
+          if ($eqeqeq("str", ($ret_or_1 = child.$type()))) {
+            
+            value = child.$loc().$expression().$source();
+            if ($truthy(value['$include?']("self"))) {
+              self.$scope().$self()
+            };
+            return self.$push($$('Fragment').$new(value, self.$scope(), child));
+          } else if (($eqeqeq("begin", $ret_or_1) || (($eqeqeq("gvar", $ret_or_1) || (($eqeqeq("ivar", $ret_or_1) || ($eqeqeq("nil", $ret_or_1)))))))) {
+            return self.$push(self.$expr(child))
+          } else {
+            return self.$raise("Unsupported xstr part: " + (child.$type()))
+          }
+        }, 1);
         
-        Opal.def(self, '$compile_single_line', $XStringNode_compile_single_line$4 = function $$compile_single_line(children) {
-          var $$5, self = this, has_embeded_return = nil, first_child = nil, single_child = nil, $ret_or_1 = nil, first_value = nil, $ret_or_2 = nil, last_child = nil, $ret_or_3 = nil, last_value = nil;
+        $def(self, '$compile_single_line', function $$compile_single_line(children) {
+          var self = this, has_embeded_return = nil, first_child = nil, single_child = nil, $ret_or_1 = nil, first_value = nil, last_child = nil, last_value = nil;
 
           
           has_embeded_return = false;
           first_child = children.$shift();
           single_child = children['$empty?']();
-          first_child = (function() {if ($truthy(($ret_or_1 = first_child))) {
-            return $ret_or_1
-          } else {
-            return self.$s("nil")
-          }; return nil; })();
-          if (first_child.$type()['$==']("str")) {
+          first_child = ($truthy(($ret_or_1 = first_child)) ? ($ret_or_1) : (self.$s("nil")));
+          if ($eqeq(first_child.$type(), "str")) {
             
             first_value = first_child.$loc().$expression().$source().$strip();
-            has_embeded_return = first_value['$=~'](/^return\b/);};
-          if ($truthy((function() {if ($truthy(($ret_or_2 = self.returning))) {
-            return has_embeded_return['$!']()
-          } else {
-            return $ret_or_2
-          }; return nil; })())) {
-            self.$push("return ")};
-          last_child = (function() {if ($truthy(($ret_or_3 = children.$pop()))) {
-            return $ret_or_3
-          } else {
-            return first_child
-          }; return nil; })();
-          if (last_child.$type()['$==']("str")) {
-            last_value = self.$extract_last_value(last_child)};
-          if ($truthy(single_child)) {
-          } else {
+            has_embeded_return = first_value['$=~'](/^return\b/);
+          };
+          if (($truthy(self.returning) && ($not(has_embeded_return)))) {
+            self.$push("return ")
+          };
+          last_child = ($truthy(($ret_or_1 = children.$pop())) ? ($ret_or_1) : (first_child));
+          if ($eqeq(last_child.$type(), "str")) {
+            last_value = self.$extract_last_value(last_child)
+          };
+          if (!$truthy(single_child)) {
             
             self.should_add_semicolon = false;
             self.$compile_child(first_child);
-            $send(children, 'each', [], ($$5 = function(c){var self = $$5.$$s == null ? this : $$5.$$s;
+            $send(children, 'each', [], function $$5(c){var self = $$5.$$s == null ? this : $$5.$$s;
 
               
               
-              if (c == null) {
-                c = nil;
-              };
-              return self.$compile_child(c);}, $$5.$$s = self, $$5.$$arity = 1, $$5));
+              if (c == null) c = nil;;
+              return self.$compile_child(c);}, {$$arity: 1, $$s: self});
           };
-          if (last_child.$type()['$==']("str")) {
-            return self.$push($$($nesting, 'Fragment').$new(last_value, self.$scope(), last_child))
+          if ($eqeq(last_child.$type(), "str")) {
+            return self.$push($$('Fragment').$new(last_value, self.$scope(), last_child))
           } else {
             return self.$compile_child(last_child)
           };
-        }, $XStringNode_compile_single_line$4.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$extract_last_value', $XStringNode_extract_last_value$6 = function $$extract_last_value(last_child) {
-          var self = this, last_value = nil, $ret_or_4 = nil, $ret_or_5 = nil;
+        $def(self, '$extract_last_value', function $$extract_last_value(last_child) {
+          var self = this, last_value = nil;
 
           
           last_value = last_child.$loc().$expression().$source().$rstrip();
-          if ($truthy((function() {if ($truthy(($ret_or_4 = (function() {if ($truthy(($ret_or_5 = self.returning))) {
-            return $ret_or_5
-          } else {
-            return self['$expr?']()
-          }; return nil; })()))) {
-            return last_value['$end_with?'](";")
-          } else {
-            return $ret_or_4
-          }; return nil; })())) {
+          if ($truthy(last_value['$include?']("self"))) {
+            self.$scope().$self()
+          };
+          if ((($truthy(self.returning) || ($truthy(self['$expr?']()))) && ($truthy(last_value['$end_with?'](";"))))) {
             
             self.$compiler().$warning("Removed semicolon ending x-string expression, interpreted as unintentional", last_child.$line());
-            last_value = last_value['$[]']($range(0, -2, false));};
+            last_value = last_value['$[]']($range(0, -2, false));
+          };
           if ($truthy(self.returning)) {
-            self.should_add_semicolon = true};
+            self.should_add_semicolon = true
+          };
           return last_value;
-        }, $XStringNode_extract_last_value$6.$$arity = 1);
-        
-        Opal.def(self, '$single_line?', $XStringNode_single_line$ques$7 = function(children) {
-          var $$8, self = this, $ret_or_6 = nil;
-
-          if ($truthy(($ret_or_6 = children.$size()['$=='](1)))) {
-            return $ret_or_6
-          } else {
-            return $send(children, 'none?', [], ($$8 = function(c){var self = $$8.$$s == null ? this : $$8.$$s, $ret_or_7 = nil;
-
-              
-              
-              if (c == null) {
-                c = nil;
-              };
-              if ($truthy(($ret_or_7 = c.$type()['$==']("str")))) {
-                return c.$loc().$expression().$source()['$end_with?']("\n")
-              } else {
-                return $ret_or_7
-              };}, $$8.$$s = self, $$8.$$arity = 1, $$8))
-          }
-        }, $XStringNode_single_line$ques$7.$$arity = 1);
-        
-        Opal.def(self, '$unpack_return', $XStringNode_unpack_return$9 = function $$unpack_return(children) {
+        }, 1);
+        return $def(self, '$unpack_return', function $$unpack_return(children) {
           var self = this, first_child = nil;
 
           
           first_child = children.$first();
           self.returning = false;
-          if (first_child.$type()['$==']("js_return")) {
+          if ($eqeq(first_child.$type(), "js_return")) {
             
             self.returning = true;
-            children = first_child.$children();};
-          return children;
-        }, $XStringNode_unpack_return$9.$$arity = 1);
-        return (Opal.def(self, '$strip_empty_children', $XStringNode_strip_empty_children$10 = function $$strip_empty_children(children) {
-          var $$11, $a, self = this, empty_line = nil, $ret_or_10 = nil, $ret_or_11 = nil;
-
-          
-          children = children.$dup();
-          empty_line = $lambda(($$11 = function(child){var self = $$11.$$s == null ? this : $$11.$$s, $ret_or_8 = nil, $ret_or_9 = nil;
-
-            
-            
-            if (child == null) {
-              child = nil;
-            };
-            if ($truthy(($ret_or_8 = child['$nil?']()))) {
-              return $ret_or_8
-            } else {
-              
-              if ($truthy(($ret_or_9 = child.$type()['$==']("str")))) {
-                return child.$loc().$expression().$source().$rstrip()['$empty?']()
-              } else {
-                return $ret_or_9
-              };
-            };}, $$11.$$s = self, $$11.$$arity = 1, $$11));
-          while ($truthy((function() {if ($truthy(($ret_or_10 = children['$any?']()))) {
-            return empty_line['$[]'](children.$first())
-          } else {
-            return $ret_or_10
-          }; return nil; })())) {
-            children.$shift()
-          };
-          while ($truthy((function() {if ($truthy(($ret_or_11 = children['$any?']()))) {
-            return empty_line['$[]'](children.$last())
-          } else {
-            return $ret_or_11
-          }; return nil; })())) {
-            children.$pop()
+            children = first_child.$children();
           };
           return children;
-        }, $XStringNode_strip_empty_children$10.$$arity = 1), nil) && 'strip_empty_children';
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+        }, 1);
+      })($nesting[0], $$('Base'), $nesting)
     })($nesting[0], $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes/lambda"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send;
+Opal.modules["opal/nodes/lambda"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$handle', '$children', '$helper', '$defines_lambda', '$scope', '$push', '$expr', '$iter']);
+  Opal.add_stubs('require,handle,children,helper,defines_lambda,scope,push,expr,iter');
   
   self.$require("opal/nodes/call");
   return (function($base, $parent_nesting) {
@@ -39585,35 +36148,33 @@ Opal.modules["opal/nodes/lambda"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'Nodes');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return (function($base, $super, $parent_nesting) {
+      return (function($base, $super) {
         var self = $klass($base, $super, 'LambdaNode');
 
-        var $nesting = [self].concat($parent_nesting), $LambdaNode_compile$1;
-
+        
         
         self.$handle("lambda");
         self.$children("iter");
-        return (Opal.def(self, '$compile', $LambdaNode_compile$1 = function $$compile() {
-          var $$2, self = this;
+        return $def(self, '$compile', function $$compile() {
+          var self = this;
 
           
           self.$helper("lambda");
-          return $send(self.$scope(), 'defines_lambda', [], ($$2 = function(){var self = $$2.$$s == null ? this : $$2.$$s;
+          return $send(self.$scope(), 'defines_lambda', [], function $$1(){var self = $$1.$$s == null ? this : $$1.$$s;
 
-            return self.$push("$lambda(", self.$expr(self.$iter()), ")")}, $$2.$$s = self, $$2.$$arity = 0, $$2));
-        }, $LambdaNode_compile$1.$$arity = 0), nil) && 'compile';
-      })($nesting[0], $$($nesting, 'Base'), $nesting)
+            return self.$push("$lambda(", self.$expr(self.$iter()), ")")}, {$$arity: 0, $$s: self});
+        }, 0);
+      })($nesting[0], $$('Base'))
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/nodes"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$;
+Opal.modules["opal/nodes"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, nil = Opal.nil;
 
-  Opal.add_stubs(['$require']);
+  Opal.add_stubs('require');
   
   self.$require("opal/nodes/base");
   self.$require("opal/nodes/literal");
@@ -39635,7 +36196,6 @@ Opal.modules["opal/nodes"] = function(Opal) {
   self.$require("opal/nodes/definitions");
   self.$require("opal/nodes/yield");
   self.$require("opal/nodes/rescue");
-  self.$require("opal/nodes/case");
   self.$require("opal/nodes/super");
   self.$require("opal/nodes/top");
   self.$require("opal/nodes/while");
@@ -39648,11 +36208,10 @@ Opal.modules["opal/nodes"] = function(Opal) {
   return self.$require("opal/nodes/lambda");
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/eof_content"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send, $range = Opal.range;
+Opal.modules["opal/eof_content"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $klass = Opal.klass, $const_set = Opal.const_set, $def = Opal.def, $truthy = Opal.truthy, $send = Opal.send, $eqeq = Opal.eqeq, $range = Opal.range, $to_ary = Opal.to_ary;
 
-  Opal.add_stubs(['$empty?', '$[]', '$last_token_position', '$drop_while', '$lines', '$==', '$join', '$private', '$last', '$end_pos']);
+  Opal.add_stubs('empty?,[],last_token_position,drop_while,lines,==,join,private,last,end_pos');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Opal');
 
@@ -39661,329 +36220,259 @@ Opal.modules["opal/eof_content"] = function(Opal) {
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'EofContent');
 
-      var $nesting = [self].concat($parent_nesting), $EofContent_initialize$1, $EofContent_eof$2, $EofContent_last_token_position$4;
+      var $nesting = [self].concat($parent_nesting), $proto = self.$$prototype;
 
-      self.$$prototype.tokens = self.$$prototype.source = nil;
+      $proto.tokens = $proto.source = nil;
       
-      Opal.const_set($nesting[0], 'DATA_SEPARATOR', "__END__\n");
+      $const_set($nesting[0], 'DATA_SEPARATOR', "__END__\n");
       
-      Opal.def(self, '$initialize', $EofContent_initialize$1 = function $$initialize(tokens, source) {
+      $def(self, '$initialize', function $$initialize(tokens, source) {
         var self = this;
 
         
         self.tokens = tokens;
         return (self.source = source);
-      }, $EofContent_initialize$1.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$eof', $EofContent_eof$2 = function $$eof() {
-        var $$3, self = this, eof_content = nil, $ret_or_1 = nil;
+      $def(self, '$eof', function $$eof() {
+        var self = this, eof_content = nil, $ret_or_1 = nil;
 
         
         if ($truthy(self.tokens['$empty?']())) {
-          return nil};
+          return nil
+        };
         eof_content = self.source['$[]'](Opal.Range.$new(self.$last_token_position(), -1, false));
-        if ($truthy(eof_content)) {
-        } else {
+        if (!$truthy(eof_content)) {
           return nil
         };
-        eof_content = $send(eof_content.$lines(), 'drop_while', [], ($$3 = function(line){var self = $$3.$$s == null ? this : $$3.$$s;
-
+        eof_content = $send(eof_content.$lines(), 'drop_while', [], function $$1(line){
           
           
-          if (line == null) {
-            line = nil;
-          };
-          return line['$==']("\n");}, $$3.$$s = self, $$3.$$arity = 1, $$3));
-        if (eof_content['$[]'](0)['$==']("__END__\n")) {
+          if (line == null) line = nil;;
+          return line['$==']("\n");}, 1);
+        if ($eqeq(eof_content['$[]'](0), "__END__\n")) {
           
-          eof_content = (function() {if ($truthy(($ret_or_1 = eof_content['$[]']($range(1, -1, false))))) {
-            return $ret_or_1
-          } else {
-            return []
-          }; return nil; })();
+          eof_content = ($truthy(($ret_or_1 = eof_content['$[]']($range(1, -1, false)))) ? ($ret_or_1) : ([]));
           return eof_content.$join();
-        } else if (eof_content['$=='](["__END__"])) {
+        } else if ($eqeq(eof_content, ["__END__"])) {
           return ""
         } else {
           return nil
         };
-      }, $EofContent_eof$2.$$arity = 0);
+      }, 0);
       self.$private();
-      return (Opal.def(self, '$last_token_position', $EofContent_last_token_position$4 = function $$last_token_position() {
+      return $def(self, '$last_token_position', function $$last_token_position() {
         var $a, $b, self = this, _ = nil, last_token_info = nil, last_token_range = nil;
 
         
-        $b = self.tokens.$last(), $a = Opal.to_ary($b), (_ = ($a[0] == null ? nil : $a[0])), (last_token_info = ($a[1] == null ? nil : $a[1])), $b;
-        $b = last_token_info, $a = Opal.to_ary($b), (_ = ($a[0] == null ? nil : $a[0])), (last_token_range = ($a[1] == null ? nil : $a[1])), $b;
+        $b = self.tokens.$last(), $a = $to_ary($b), (_ = ($a[0] == null ? nil : $a[0])), (last_token_info = ($a[1] == null ? nil : $a[1])), $b;
+        $b = last_token_info, $a = $to_ary($b), (_ = ($a[0] == null ? nil : $a[0])), (last_token_range = ($a[1] == null ? nil : $a[1])), $b;
         return last_token_range.$end_pos();
-      }, $EofContent_last_token_position$4.$$arity = 0), nil) && 'last_token_position';
+      }, 0);
     })($nesting[0], null, $nesting)
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/errors"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $truthy = Opal.truthy, $send = Opal.send, $alias = Opal.alias;
+Opal.modules["opal/errors"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def, $truthy = Opal.truthy, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $defs = Opal.defs, $rb_plus = Opal.rb_plus, $alias = Opal.alias;
 
-  Opal.add_stubs(['$attr_reader', '$attr_accessor', '$new', '$respond_to?', '$location', '$location=', '$-', '$diagnostic', '$diagnostic=', '$to_a', '$backtrace', '$unshift', '$to_s', '$set_backtrace', '$path', '$lineno', '$+', '$label', '$line', '$lineno=', '$source_line', '$label=', '$expression']);
+  Opal.add_stubs('attr_reader,attr_accessor,new,respond_to?,location,location=,-,diagnostic,diagnostic=,to_a,backtrace,unshift,to_s,set_backtrace,path,lineno,+,label,line,lineno=,source_line,label=,expression');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Opal');
 
-    var $nesting = [self].concat($parent_nesting), $Opal_opal_location_from_error$2, $Opal_add_opal_location_to_error$3;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
-    (function($base, $super, $parent_nesting) {
-      var self = $klass($base, $super, 'Error');
-
-      var $nesting = [self].concat($parent_nesting);
-
-      return nil
-    })($nesting[0], $$($nesting, 'StandardError'), $nesting);
-    (function($base, $super, $parent_nesting) {
+    $klass($nesting[0], $$('StandardError'), 'Error');
+    (function($base, $super) {
       var self = $klass($base, $super, 'GemNotFound');
 
-      var $nesting = [self].concat($parent_nesting), $GemNotFound_initialize$1;
-
+      
       
       self.$attr_reader("gem_name");
-      return (Opal.def(self, '$initialize', $GemNotFound_initialize$1 = function $$initialize(gem_name) {
-        var $iter = $GemNotFound_initialize$1.$$p, $yield = $iter || nil, self = this;
+      return $def(self, '$initialize', function $$initialize(gem_name) {
+        var $yield = $$initialize.$$p || nil, self = this;
 
-        if ($iter) $GemNotFound_initialize$1.$$p = null;
+        delete $$initialize.$$p;
         
         self.gem_name = gem_name;
-        return $send2(self, $find_super(self, 'initialize', $GemNotFound_initialize$1, false, true), 'initialize', ["" + "can't find gem " + (gem_name)], null);
-      }, $GemNotFound_initialize$1.$$arity = 1), nil) && 'initialize';
-    })($nesting[0], $$($nesting, 'Error'), $nesting);
-    (function($base, $super, $parent_nesting) {
+        return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', ["can't find gem " + (gem_name)], null);
+      }, 1);
+    })($nesting[0], $$('Error'));
+    (function($base, $super) {
       var self = $klass($base, $super, 'CompilationError');
 
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("location")
-    })($nesting[0], $$($nesting, 'Error'), $nesting);
-    (function($base, $super, $parent_nesting) {
-      var self = $klass($base, $super, 'ParsingError');
-
-      var $nesting = [self].concat($parent_nesting);
-
-      return nil
-    })($nesting[0], $$($nesting, 'CompilationError'), $nesting);
-    (function($base, $super, $parent_nesting) {
-      var self = $klass($base, $super, 'RewritingError');
-
-      var $nesting = [self].concat($parent_nesting);
-
-      return nil
-    })($nesting[0], $$($nesting, 'ParsingError'), $nesting);
-    (function($base, $super, $parent_nesting) {
+    })($nesting[0], $$('Error'));
+    $klass($nesting[0], $$('CompilationError'), 'ParsingError');
+    $klass($nesting[0], $$('ParsingError'), 'RewritingError');
+    (function($base, $super) {
       var self = $klass($base, $super, 'SyntaxError');
 
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("location")
-    })($nesting[0], $$$('::', 'SyntaxError'), $nesting);
-    Opal.defs(self, '$opal_location_from_error', $Opal_opal_location_from_error$2 = function $$opal_location_from_error(error) {
-      var self = this, opal_location = nil, $writer = nil;
+    })($nesting[0], $$$('SyntaxError'));
+    $defs(self, '$opal_location_from_error', function $$opal_location_from_error(error) {
+      var opal_location = nil, $writer = nil;
 
       
-      opal_location = $$($nesting, 'OpalBacktraceLocation').$new();
+      opal_location = $$('OpalBacktraceLocation').$new();
       if ($truthy(error['$respond_to?']("location"))) {
         
         $writer = [error.$location()];
-        $send(opal_location, 'location=', Opal.to_a($writer));
-        $writer[$rb_minus($writer["length"], 1)];};
+        $send(opal_location, 'location=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];
+      };
       if ($truthy(error['$respond_to?']("diagnostic"))) {
         
         $writer = [error.$diagnostic()];
-        $send(opal_location, 'diagnostic=', Opal.to_a($writer));
-        $writer[$rb_minus($writer["length"], 1)];};
+        $send(opal_location, 'diagnostic=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];
+      };
       return opal_location;
-    }, $Opal_opal_location_from_error$2.$$arity = 1);
-    Opal.defs(self, '$add_opal_location_to_error', $Opal_add_opal_location_to_error$3 = function $$add_opal_location_to_error(opal_location, error) {
-      var self = this, backtrace = nil;
+    }, 1);
+    $defs(self, '$add_opal_location_to_error', function $$add_opal_location_to_error(opal_location, error) {
+      var backtrace = nil;
 
       
       backtrace = error.$backtrace().$to_a();
       backtrace.$unshift(opal_location.$to_s());
       error.$set_backtrace(backtrace);
       return error;
-    }, $Opal_add_opal_location_to_error$3.$$arity = 2);
-    return (function($base, $super, $parent_nesting) {
+    }, 2);
+    return (function($base, $super) {
       var self = $klass($base, $super, 'OpalBacktraceLocation');
 
-      var $nesting = [self].concat($parent_nesting), $OpalBacktraceLocation_initialize$4, $OpalBacktraceLocation_to_s$5, $OpalBacktraceLocation_diagnostic$eq$6, $OpalBacktraceLocation_location$eq$7;
-
+      
       
       self.$attr_accessor("path", "lineno", "label");
       
-      Opal.def(self, '$initialize', $OpalBacktraceLocation_initialize$4 = function $$initialize(path, lineno, label) {
+      $def(self, '$initialize', function $$initialize(path, lineno, label) {
         var $a, self = this;
 
         
         
-        if (path == null) {
-          path = nil;
-        };
+        if (path == null) path = nil;;
         
-        if (lineno == null) {
-          lineno = nil;
-        };
+        if (lineno == null) lineno = nil;;
         
-        if (label == null) {
-          label = nil;
-        };
+        if (label == null) label = nil;;
         return $a = [path, lineno, label], (self.path = $a[0]), (self.lineno = $a[1]), (self.label = $a[2]), $a;
-      }, $OpalBacktraceLocation_initialize$4.$$arity = -1);
+      }, -1);
       
-      Opal.def(self, '$to_s', $OpalBacktraceLocation_to_s$5 = function $$to_s() {
+      $def(self, '$to_s', function $$to_s() {
         var self = this, string = nil;
 
         
         string = self.$path();
         if ($truthy(self.$lineno())) {
-          string = $rb_plus(string, "" + ":" + (self.$lineno()))};
+          string = $rb_plus(string, ":" + (self.$lineno()))
+        };
         string = $rb_plus(string, ":in ");
         if ($truthy(self.$label())) {
-          string = $rb_plus(string, "" + "`" + (self.$label()) + "'")
+          string = $rb_plus(string, "`" + (self.$label()) + "'")
         } else {
           string = $rb_plus(string, "unknown")
         };
         return string;
-      }, $OpalBacktraceLocation_to_s$5.$$arity = 0);
+      }, 0);
       $alias(self, "line", "lineno");
       
-      Opal.def(self, '$diagnostic=', $OpalBacktraceLocation_diagnostic$eq$6 = function(diagnostic) {
+      $def(self, '$diagnostic=', function $OpalBacktraceLocation_diagnostic$eq$1(diagnostic) {
         var self = this, $writer = nil;
 
         
-        if ($truthy(diagnostic)) {
-        } else {
+        if (!$truthy(diagnostic)) {
           return nil
         };
         
         $writer = [diagnostic.$location()];
-        $send(self, 'location=', Opal.to_a($writer));
+        $send(self, 'location=', $to_a($writer));
         return $writer[$rb_minus($writer["length"], 1)];;
-      }, $OpalBacktraceLocation_diagnostic$eq$6.$$arity = 1);
-      return (Opal.def(self, '$location=', $OpalBacktraceLocation_location$eq$7 = function(location) {
+      }, 1);
+      return $def(self, '$location=', function $OpalBacktraceLocation_location$eq$2(location) {
         var self = this, $writer = nil;
 
         
-        if ($truthy(location)) {
-        } else {
+        if (!$truthy(location)) {
           return nil
         };
         
         $writer = [location.$line()];
-        $send(self, 'lineno=', Opal.to_a($writer));
+        $send(self, 'lineno=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         if ($truthy(location['$respond_to?']("source_line"))) {
           
           $writer = [location.$source_line()];
-          $send(self, 'label=', Opal.to_a($writer));
+          $send(self, 'label=', $to_a($writer));
           return $writer[$rb_minus($writer["length"], 1)];
         } else if ($truthy(location['$respond_to?']("expression"))) {
           
           $writer = [location.$expression().$source_line()];
-          $send(self, 'label=', Opal.to_a($writer));
+          $send(self, 'label=', $to_a($writer));
           return $writer[$rb_minus($writer["length"], 1)];
         } else {
           return nil
         };
-      }, $OpalBacktraceLocation_location$eq$7.$$arity = 1), nil) && 'location=';
-    })($nesting[0], null, $nesting);
+      }, 1);
+    })($nesting[0], null);
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/magic_comments"] = function(Opal) {
-  function $rb_ge(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs >= rhs : lhs['$>='](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $hash2 = Opal.hash2, $truthy = Opal.truthy, $send = Opal.send;
+Opal.modules["opal/magic_comments"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $module = Opal.module, $const_set = Opal.const_set, $hash2 = Opal.hash2, $truthy = Opal.truthy, $send = Opal.send, $rb_ge = Opal.rb_ge, $eqeqeq = Opal.eqeqeq, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $defs = Opal.defs;
 
-  Opal.add_stubs(['$freeze', '$line', '$loc', '$take', '$each', '$>=', '$any?', '$scan', '$text', '$to_sym', '$===', '$[]=', '$-']);
+  Opal.add_stubs('freeze,line,loc,take,each,>=,any?,scan,text,to_sym,===,[]=,-');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'MagicComments');
 
-    var $nesting = [self].concat($parent_nesting), $MagicComments_parse$1;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
-    Opal.const_set($nesting[0], 'MAGIC_COMMENT_RE', /^# *(\w+) *: *(\S+.*?) *$/.$freeze());
-    Opal.const_set($nesting[0], 'EMACS_MAGIC_COMMENT_RE', /^# *-\*- *(\w+) *: *(\S+.*?) *-\*- *$/.$freeze());
-    return (Opal.defs(self, '$parse', $MagicComments_parse$1 = function $$parse(sexp, comments) {
-      var $$2, self = this, flags = nil, first_line = nil;
+    $const_set($nesting[0], 'MAGIC_COMMENT_RE', /^# *(\w+) *: *(\S+.*?) *$/.$freeze());
+    $const_set($nesting[0], 'EMACS_MAGIC_COMMENT_RE', /^# *-\*- *(\w+) *: *(\S+.*?) *-\*- *$/.$freeze());
+    return $defs(self, '$parse', function $$parse(sexp, comments) {
+      var flags = nil, first_line = nil;
 
       
       flags = $hash2([], {});
       if ($truthy(sexp)) {
         
         first_line = sexp.$loc().$line();
-        comments = comments.$take(first_line);};
-      $send(comments, 'each', [], ($$2 = function(comment){var self = $$2.$$s == null ? this : $$2.$$s, $$3, $ret_or_1 = nil, $ret_or_2 = nil, parts = nil;
+        comments = comments.$take(first_line);
+      };
+      $send(comments, 'each', [], function $$1(comment){var parts = nil;
 
         
         
-        if (comment == null) {
-          comment = nil;
+        if (comment == null) comment = nil;;
+        if (($truthy(first_line) && ($truthy($rb_ge(comment.$loc().$line(), first_line))))) {
+          return nil;
         };
-        if ($truthy((function() {if ($truthy(($ret_or_1 = first_line))) {
-          return $rb_ge(comment.$loc().$line(), first_line)
-        } else {
-          return $ret_or_1
-        }; return nil; })())) {
-          return nil;};
-        if ($truthy((function() {if ($truthy(($ret_or_2 = (parts = comment.$text().$scan($$($nesting, 'MAGIC_COMMENT_RE')))['$any?']()))) {
-          return $ret_or_2
-        } else {
-          return (parts = comment.$text().$scan($$($nesting, 'EMACS_MAGIC_COMMENT_RE')))['$any?']()
-        }; return nil; })())) {
-          return $send(parts, 'each', [], ($$3 = function(key, value){var self = $$3.$$s == null ? this : $$3.$$s, $writer = nil, $case = nil;
+        if (($truthy((parts = comment.$text().$scan($$('MAGIC_COMMENT_RE')))['$any?']()) || ($truthy((parts = comment.$text().$scan($$('EMACS_MAGIC_COMMENT_RE')))['$any?']())))) {
+          return $send(parts, 'each', [], function $$2(key, value){var $writer = nil, $ret_or_1 = nil;
 
             
             
-            if (key == null) {
-              key = nil;
-            };
+            if (key == null) key = nil;;
             
-            if (value == null) {
-              value = nil;
-            };
-            $writer = [key.$to_sym(), (function() {$case = value;
-            if ("true"['$===']($case)) {return true}
-            else if ("false"['$===']($case)) {return false}
-            else {return value}})()];
-            $send(flags, '[]=', Opal.to_a($writer));
-            return $writer[$rb_minus($writer["length"], 1)];}, $$3.$$s = self, $$3.$$arity = 2, $$3))
+            if (value == null) value = nil;;
+            $writer = [key.$to_sym(), ($eqeqeq("true", ($ret_or_1 = value)) || (($eqeqeq("false", $ret_or_1) ? (false) : (value))))];
+            $send(flags, '[]=', $to_a($writer));
+            return $writer[$rb_minus($writer["length"], 1)];}, 2)
         } else {
           return nil
-        };}, $$2.$$s = self, $$2.$$arity = 1, $$2));
+        };}, 1);
       return flags;
-    }, $MagicComments_parse$1.$$arity = 2), nil) && 'parse';
-  })($$($nesting, 'Opal'), $nesting)
+    }, 2);
+  })($$('Opal'), $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/compiler"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $hash2 = Opal.hash2, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy, $slice = Opal.slice;
+Opal.modules["opal/compiler"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $hash2 = Opal.hash2, $defs = Opal.defs, $klass = Opal.klass, $const_set = Opal.const_set, $send = Opal.send, $truthy = Opal.truthy, $not = Opal.not, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $def = Opal.def, $Opal = Opal.Opal, $to_ary = Opal.to_ary, $alias = Opal.alias, $eqeqeq = Opal.eqeqeq, $regexp = Opal.regexp, $rb_plus = Opal.rb_plus, $slice = Opal.slice, $eqeq = Opal.eqeq;
 
-  Opal.add_stubs(['$require', '$compile', '$new', '$freeze', '$join', '$dirname', '$first', '$split', '$basename', '$to_s', '$cleanpath', '$Pathname', '$fetch', '$define_method', '$option_value', '$key?', '$[]', '$!', '$include?', '$raise', '$inspect', '$[]=', '$-', '$compiler_option', '$attr_reader', '$attr_accessor', '$parse', '$re_raise_with_location', '$flatten', '$process', '$end_with?', '$code', '$last', '$<<', '$fragment', '$s', '$map', '$to_proc', '$file', '$source=', '$default_parser', '$tokenize', '$associate_locations', '$eof', '$magic_comments', '$to_sym', '$strip', '$location=', '$opal_location_from_error', '$path=', '$label', '$lines', '$to_i', '$line', '$label=', '$message', '$set_backtrace', '$backtrace', '$add_opal_location_to_error', '$warn', '$empty?', '$gsub', '$+', '$start_with?', '$helpers', '$new_temp', '$queue_temp', '$push_while', '$pop_while', '$in_while?', '$nil?', '$scope', '$handlers', '$type', '$compile_to_fragments', '$error', '$returns', '$===', '$updated', '$children', '$loc', '$uses_block!', '$block_name', '$find_parent_def', '$cache', '$source_map']);
+  Opal.add_stubs('require,compile,new,freeze,join,dirname,first,split,basename,to_s,cleanpath,Pathname,fetch,define_method,option_value,key?,[],!,include?,raise,inspect,[]=,-,compiler_option,attr_reader,attr_accessor,parse,re_raise_with_location,flatten,process,end_with?,code,last,<<,fragment,s,map,to_proc,file,source=,default_parser,tokenize,requirable?,eval?,tap,meta,location,children,associate_locations,eof,magic_comments,to_sym,strip,async_await_before_typecasting,===,async_await_set_to_regexp,to_a,gsub,escape,location=,opal_location_from_error,path=,label,lines,to_i,line,label=,message,set_backtrace,backtrace,add_opal_location_to_error,warn,empty?,+,start_with?,helpers,new_temp,queue_temp,push_while,pop_while,in_while?,nil?,scope,handlers,type,compile_to_fragments,error,returns,updated,==,uses_block!,block_name,find_parent_def,cache,source_map');
   
   self.$require("set");
   self.$require("opal/parser");
@@ -39995,76 +36484,66 @@ Opal.modules["opal/compiler"] = function(Opal) {
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Opal');
 
-    var $nesting = [self].concat($parent_nesting), $Opal_compile$1;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
-    Opal.defs(self, '$compile', $Opal_compile$1 = function $$compile(source, options) {
-      var self = this;
-
+    $defs(self, '$compile', function $$compile(source, options) {
       
       
-      if (options == null) {
-        options = $hash2([], {});
-      };
-      return $$($nesting, 'Compiler').$new(source, options).$compile();
-    }, $Opal_compile$1.$$arity = -2);
+      
+      if (options == null) options = $hash2([], {});;
+      return $$('Compiler').$new(source, options).$compile();
+    }, -2);
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Compiler');
 
-      var $nesting = [self].concat($parent_nesting), $Compiler_module_name$2, $Compiler_compiler_option$3, $Compiler_option_value$5, $Compiler_initialize$6, $Compiler_compile$7, $Compiler_parse$9, $Compiler_source_map$11, $Compiler_helpers$12, $Compiler_operator_helpers$14, $Compiler_method_calls$15, $Compiler_error$16, $Compiler_re_raise_with_location$17, $Compiler_warning$18, $Compiler_parser_indent$19, $Compiler_s$20, $Compiler_fragment$21, $Compiler_unique_temp$22, $Compiler_helper$23, $Compiler_indent$24, $Compiler_with_temp$25, $Compiler_in_while$26, $Compiler_in_case$27, $Compiler_in_while$ques$28, $Compiler_process$29, $Compiler_handlers$30, $Compiler_requires$31, $Compiler_required_trees$32, $Compiler_returns$33, $Compiler_handle_block_given_call$35, $Compiler_marshal_dump$36, $Compiler_marshal_load$37;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.option_values = self.$$prototype.options = self.$$prototype.magic_comments = self.$$prototype.fragments = self.$$prototype.source = self.$$prototype.buffer = self.$$prototype.source_map = self.$$prototype.result = self.$$prototype.helpers = self.$$prototype.operator_helpers = self.$$prototype.method_calls = self.$$prototype.indent = self.$$prototype.unique = self.$$prototype.scope = self.$$prototype.case_stmt = self.$$prototype.handlers = self.$$prototype.requires = self.$$prototype.required_trees = nil;
+      $proto.option_values = $proto.options = $proto.magic_comments = $proto.fragments = $proto.source = $proto.buffer = $proto.source_map = $proto.result = $proto.helpers = $proto.method_calls = $proto.async_await = $proto.indent = $proto.unique = $proto.scope = $proto.case_stmt = $proto.handlers = $proto.requires = $proto.required_trees = $proto.autoloads = nil;
       
-      Opal.const_set($nesting[0], 'INDENT', "  ");
-      Opal.const_set($nesting[0], 'COMPARE', ["<", ">", "<=", ">="].$freeze());
-      Opal.defs(self, '$module_name', $Compiler_module_name$2 = function $$module_name(path) {
+      $const_set($nesting[0], 'INDENT', "  ");
+      $const_set($nesting[0], 'COMPARE', ["<", ">", "<=", ">="].$freeze());
+      $defs(self, '$module_name', function $$module_name(path) {
         var self = this;
 
         
-        path = $$($nesting, 'File').$join($$($nesting, 'File').$dirname(path), $$($nesting, 'File').$basename(path).$split(".").$first());
+        path = $$('File').$join($$('File').$dirname(path), $$('File').$basename(path).$split(".").$first());
         return self.$Pathname(path).$cleanpath().$to_s();
-      }, $Compiler_module_name$2.$$arity = 1);
-      Opal.defs(self, '$compiler_option', $Compiler_compiler_option$3 = function $$compiler_option(name, config) {
-        var $$4, self = this, method_name = nil;
+      }, 1);
+      $defs(self, '$compiler_option', function $$compiler_option(name, config) {
+        var self = this, method_name = nil;
 
         
         
-        if (config == null) {
-          config = $hash2([], {});
-        };
+        if (config == null) config = $hash2([], {});;
         method_name = config.$fetch("as", name);
-        return $send(self, 'define_method', [method_name], ($$4 = function(){var self = $$4.$$s == null ? this : $$4.$$s;
+        return $send(self, 'define_method', [method_name], function $$1(){var self = $$1.$$s == null ? this : $$1.$$s;
 
-          return self.$option_value(name, config)}, $$4.$$s = self, $$4.$$arity = 0, $$4));
-      }, $Compiler_compiler_option$3.$$arity = -2);
+          return self.$option_value(name, config)}, {$$arity: 0, $$s: self});
+      }, -2);
       
-      Opal.def(self, '$option_value', $Compiler_option_value$5 = function $$option_value(name, config) {
-        var self = this, default_value = nil, valid_values = nil, magic_comment = nil, value = nil, $ret_or_1 = nil, $ret_or_2 = nil, $writer = nil;
+      $def(self, '$option_value', function $$option_value(name, config) {
+        var self = this, default_value = nil, valid_values = nil, magic_comment = nil, value = nil, $writer = nil;
 
         
         if ($truthy(self.option_values['$key?'](name))) {
-          return self.option_values['$[]'](name)};
+          return self.option_values['$[]'](name)
+        };
         default_value = config['$[]']("default");
         valid_values = config['$[]']("valid_values");
         magic_comment = config['$[]']("magic_comment");
         value = self.options.$fetch(name, default_value);
-        if ($truthy((function() {if ($truthy(($ret_or_1 = magic_comment))) {
-          return self.magic_comments['$key?'](name)
-        } else {
-          return $ret_or_1
-        }; return nil; })())) {
-          value = self.magic_comments.$fetch(name)};
-        if ($truthy((function() {if ($truthy(($ret_or_2 = valid_values))) {
-          return valid_values['$include?'](value)['$!']()
-        } else {
-          return $ret_or_2
-        }; return nil; })())) {
-          self.$raise($$($nesting, 'ArgumentError'), "" + ("" + "invalid value " + (value.$inspect()) + " for option " + (name.$inspect()) + " ") + ("" + "(valid values: " + (valid_values.$inspect()) + ")"))};
+        if (($truthy(magic_comment) && ($truthy(self.magic_comments['$key?'](name))))) {
+          value = self.magic_comments.$fetch(name)
+        };
+        if (($truthy(valid_values) && ($not(valid_values['$include?'](value))))) {
+          self.$raise($$('ArgumentError'), "" + ("invalid value " + (value.$inspect()) + " for option " + (name.$inspect()) + " ") + ("(valid values: " + (valid_values.$inspect()) + ")"))
+        };
         
         $writer = [name, value];
-        $send(self.option_values, '[]=', Opal.to_a($writer));
+        $send(self.option_values, '[]=', $to_a($writer));
         return $writer[$rb_minus($writer["length"], 1)];;
-      }, $Compiler_option_value$5.$$arity = 2);
+      }, 2);
       self.$compiler_option("file", $hash2(["default"], {"default": "(file)"}));
       self.$compiler_option("method_missing", $hash2(["default", "as"], {"default": true, "as": "method_missing?"}));
       self.$compiler_option("arity_check", $hash2(["default", "as"], {"default": false, "as": "arity_check?"}));
@@ -40079,431 +36558,424 @@ Opal.modules["opal/compiler"] = function(Opal) {
       self.$compiler_option("use_strict", $hash2(["default", "as", "magic_comment"], {"default": false, "as": "use_strict?", "magic_comment": true}));
       self.$compiler_option("parse_comments", $hash2(["default", "as"], {"default": false, "as": "parse_comments?"}));
       self.$compiler_option("scope_variables", $hash2(["default"], {"default": []}));
+      self.$compiler_option("await", $hash2(["default", "as", "magic_comment"], {"default": false, "as": "async_await", "magic_comment": true}));
       self.$attr_reader("result");
       self.$attr_reader("fragments");
       self.$attr_accessor("scope");
+      self.$attr_accessor("top_scope");
       self.$attr_reader("case_stmt");
       self.$attr_reader("eof_content");
       self.$attr_reader("comments");
       self.$attr_reader("magic_comments");
+      self.$attr_accessor("dynamic_cache_result");
       
-      Opal.def(self, '$initialize', $Compiler_initialize$6 = function $$initialize(source, options) {
+      $def(self, '$initialize', function $$initialize(source, options) {
         var self = this;
 
         
         
-        if (options == null) {
-          options = $hash2([], {});
-        };
+        if (options == null) options = $hash2([], {});;
         self.source = source;
         self.indent = "";
         self.unique = 0;
         self.options = options;
-        self.comments = $$($nesting, 'Hash').$new([]);
+        self.comments = $$('Hash').$new([]);
         self.case_stmt = nil;
         self.option_values = $hash2([], {});
-        return (self.magic_comments = $hash2([], {}));
-      }, $Compiler_initialize$6.$$arity = -2);
+        self.magic_comments = $hash2([], {});
+        return (self.dynamic_cache_result = false);
+      }, -2);
       
-      Opal.def(self, '$compile', $Compiler_compile$7 = function $$compile() {
-        var $$8, self = this;
+      $def(self, '$compile', function $$compile() {
+        var self = this;
 
         
         self.$parse();
-        self.fragments = $send(self, 're_raise_with_location', [], ($$8 = function(){var self = $$8.$$s == null ? this : $$8.$$s;
+        self.fragments = $send(self, 're_raise_with_location', [], function $$2(){var self = $$2.$$s == null ? this : $$2.$$s;
           if (self.sexp == null) self.sexp = nil;
 
-          return self.$process(self.sexp).$flatten()}, $$8.$$s = self, $$8.$$arity = 0, $$8));
-        if ($truthy(self.fragments.$last().$code()['$end_with?']("\n"))) {
-        } else {
+          return self.$process(self.sexp).$flatten()}, {$$arity: 0, $$s: self});
+        if (!$truthy(self.fragments.$last().$code()['$end_with?']("\n"))) {
           self.fragments['$<<'](self.$fragment("\n", nil, self.$s("newline")))
         };
         return (self.result = $send(self.fragments, 'map', [], "code".$to_proc()).$join(""));
-      }, $Compiler_compile$7.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$parse', $Compiler_parse$9 = function $$parse() {
-        var $a, $b, $$10, self = this, $writer = nil, sexp = nil, comments = nil, tokens = nil, $ret_or_3 = nil;
+      $def(self, '$parse', function $$parse() {
+        var $a, $b, self = this, $writer = nil, sexp = nil, comments = nil, tokens = nil, kind = nil, first_node = nil;
 
         
-        self.buffer = $$$($$$($$$('::', 'Opal'), 'Parser'), 'SourceBuffer').$new(self.$file(), 1);
+        self.buffer = $$$($$$($Opal, 'Parser'), 'SourceBuffer').$new(self.$file(), 1);
         
         $writer = [self.source];
-        $send(self.buffer, 'source=', Opal.to_a($writer));
+        $send(self.buffer, 'source=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
-        self.parser = $$$($$($nesting, 'Opal'), 'Parser').$default_parser();
-        $b = $send(self, 're_raise_with_location', [], ($$10 = function(){var self = $$10.$$s == null ? this : $$10.$$s;
+        self.parser = $$$($$('Opal'), 'Parser').$default_parser();
+        $b = $send(self, 're_raise_with_location', [], function $$3(){var self = $$3.$$s == null ? this : $$3.$$s;
           if (self.parser == null) self.parser = nil;
           if (self.buffer == null) self.buffer = nil;
 
-          return self.parser.$tokenize(self.buffer)}, $$10.$$s = self, $$10.$$arity = 0, $$10)), $a = Opal.to_ary($b), (sexp = ($a[0] == null ? nil : $a[0])), (comments = ($a[1] == null ? nil : $a[1])), (tokens = ($a[2] == null ? nil : $a[2])), $b;
-        self.sexp = self.$s("top", (function() {if ($truthy(($ret_or_3 = sexp))) {
-          return $ret_or_3
-        } else {
-          return self.$s("nil")
-        }; return nil; })());
-        self.comments = $$$($$$($$$('::', 'Parser'), 'Source'), 'Comment').$associate_locations(sexp, comments);
-        self.magic_comments = $$($nesting, 'MagicComments').$parse(sexp, comments);
-        return (self.eof_content = $$($nesting, 'EofContent').$new(tokens, self.source).$eof());
-      }, $Compiler_parse$9.$$arity = 0);
-      
-      Opal.def(self, '$source_map', $Compiler_source_map$11 = function $$source_map() {
-        var self = this, $ret_or_4 = nil;
-
-        if ($truthy(($ret_or_4 = self.source_map))) {
-          return $ret_or_4
-        } else {
-          return $$$($$$($$$('::', 'Opal'), 'SourceMap'), 'File').$new(self.fragments, self.$file(), self.source, self.result)
-        }
-      }, $Compiler_source_map$11.$$arity = 0);
+          return self.parser.$tokenize(self.buffer)}, {$$arity: 0, $$s: self}), $a = $to_ary($b), (sexp = ($a[0] == null ? nil : $a[0])), (comments = ($a[1] == null ? nil : $a[1])), (tokens = ($a[2] == null ? nil : $a[2])), $b;
+        kind = ($truthy(self['$requirable?']()) ? ("require") : ($truthy(self['$eval?']()) ? ("eval") : ("main")));
+        self.sexp = $send(sexp, 'tap', [], function $$4(i){
+          
+          
+          if (i == null) i = nil;;
+          $writer = ["kind", kind];
+          $send(i.$meta(), '[]=', $to_a($writer));
+          return $writer[$rb_minus($writer["length"], 1)];}, 1);
+        if ($truthy(sexp.$children().$first().$location())) {
+          first_node = sexp.$children().$first()
+        };
+        self.comments = $$$($$$($$$('Parser'), 'Source'), 'Comment').$associate_locations(first_node, comments);
+        self.magic_comments = $$('MagicComments').$parse(first_node, comments);
+        return (self.eof_content = $$('EofContent').$new(tokens, self.source).$eof());
+      }, 0);
       
-      Opal.def(self, '$helpers', $Compiler_helpers$12 = function $$helpers() {
-        var $$13, self = this, $ret_or_5 = nil;
+      $def(self, '$source_map', function $$source_map() {
+        var self = this, $ret_or_1 = nil;
 
-        return (self.helpers = (function() {if ($truthy(($ret_or_5 = self.helpers))) {
-          return $ret_or_5
+        if ($truthy(($ret_or_1 = self.source_map))) {
+          return $ret_or_1
         } else {
-          return $$($nesting, 'Set').$new($send(self.$magic_comments()['$[]']("helpers").$to_s().$split(","), 'map', [], ($$13 = function(h){var self = $$13.$$s == null ? this : $$13.$$s;
+          return $$$($$$($Opal, 'SourceMap'), 'File').$new(self.fragments, self.$file(), self.source, self.result)
+        }
+      }, 0);
+      
+      $def(self, '$helpers', function $$helpers() {
+        var self = this, $ret_or_1 = nil;
 
-            
-            
-            if (h == null) {
-              h = nil;
-            };
-            return h.$strip().$to_sym();}, $$13.$$s = self, $$13.$$arity = 1, $$13)))
-        }; return nil; })())
-      }, $Compiler_helpers$12.$$arity = 0);
+        return (self.helpers = ($truthy(($ret_or_1 = self.helpers)) ? ($ret_or_1) : ($$('Set').$new($send(self.$magic_comments()['$[]']("helpers").$to_s().$split(","), 'map', [], function $$5(h){
+          
+          
+          if (h == null) h = nil;;
+          return h.$strip().$to_sym();}, 1)))))
+      }, 0);
       
-      Opal.def(self, '$operator_helpers', $Compiler_operator_helpers$14 = function $$operator_helpers() {
-        var self = this, $ret_or_6 = nil;
+      $def(self, '$method_calls', function $$method_calls() {
+        var self = this, $ret_or_1 = nil;
 
-        return (self.operator_helpers = (function() {if ($truthy(($ret_or_6 = self.operator_helpers))) {
-          return $ret_or_6
-        } else {
-          return $$($nesting, 'Set').$new()
-        }; return nil; })())
-      }, $Compiler_operator_helpers$14.$$arity = 0);
+        return (self.method_calls = ($truthy(($ret_or_1 = self.method_calls)) ? ($ret_or_1) : ($$('Set').$new())))
+      }, 0);
+      $alias(self, "async_await_before_typecasting", "async_await");
       
-      Opal.def(self, '$method_calls', $Compiler_method_calls$15 = function $$method_calls() {
-        var self = this, $ret_or_7 = nil;
+      $def(self, '$async_await', function $$async_await() {
+        var $a, self = this, original = nil, $ret_or_1 = nil;
 
-        return (self.method_calls = (function() {if ($truthy(($ret_or_7 = self.method_calls))) {
-          return $ret_or_7
+        if ($truthy((($a = self['async_await'], $a != null && $a !== nil) ? 'instance-variable' : nil))) {
+          return self.async_await
         } else {
-          return $$($nesting, 'Set').$new()
-        }; return nil; })())
-      }, $Compiler_method_calls$15.$$arity = 0);
+          
+          original = self.$async_await_before_typecasting();
+          return (self.async_await = ($eqeqeq($$('String'), ($ret_or_1 = original)) ? (self.$async_await_set_to_regexp($send(original.$split(","), 'map', [], function $$6(h){
+            
+            
+            if (h == null) h = nil;;
+            return h.$strip().$to_sym();}, 1))) : (($eqeqeq($$('Array'), $ret_or_1) || ($eqeqeq($$('Set'), $ret_or_1))) ? (self.$async_await_set_to_regexp($send(original.$to_a(), 'map', [], "to_sym".$to_proc()))) : (($eqeqeq($$('Regexp'), $ret_or_1) || (($eqeqeq(true, $ret_or_1) || ($eqeqeq(false, $ret_or_1))))) ? (original) : (self.$raise("A value of await compiler option can be either " + "a Set, an Array, a String or a Boolean."))))));
+        }
+      }, 0);
+      
+      $def(self, '$async_await_set_to_regexp', function $$async_await_set_to_regexp(set) {
+        
+        
+        set = $send(set, 'map', [], function $$7(name){
+          
+          
+          if (name == null) name = nil;;
+          return $$('Regexp').$escape(name.$to_s()).$gsub("\\*", ".*?");}, 1);
+        set = set.$join("|");
+        return $regexp(["^(", set, ")$"]);
+      }, 1);
       
-      Opal.def(self, '$error', $Compiler_error$16 = function $$error(msg, line) {
+      $def(self, '$error', function $$error(msg, line) {
         var self = this, error = nil, $writer = nil;
 
         
         
-        if (line == null) {
-          line = nil;
-        };
-        error = $$$($$$('::', 'Opal'), 'SyntaxError').$new(msg);
+        if (line == null) line = nil;;
+        error = $$$($Opal, 'SyntaxError').$new(msg);
         
-        $writer = [$$$($$($nesting, 'Opal'), 'OpalBacktraceLocation').$new(self.$file(), line)];
-        $send(error, 'location=', Opal.to_a($writer));
+        $writer = [$$$($$('Opal'), 'OpalBacktraceLocation').$new(self.$file(), line)];
+        $send(error, 'location=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return self.$raise(error);
-      }, $Compiler_error$16.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$re_raise_with_location', $Compiler_re_raise_with_location$17 = function $$re_raise_with_location() {
-        var $iter = $Compiler_re_raise_with_location$17.$$p, $yield = $iter || nil, self = this, error = nil, opal_location = nil, $writer = nil, $ret_or_8 = nil, new_error = nil;
+      $def(self, '$re_raise_with_location', function $$re_raise_with_location() {
+        var $yield = $$re_raise_with_location.$$p || nil, self = this, error = nil, opal_location = nil, $writer = nil, $ret_or_1 = nil, new_error = nil;
 
-        if ($iter) $Compiler_re_raise_with_location$17.$$p = null;
+        delete $$re_raise_with_location.$$p;
         try {
           return Opal.yieldX($yield, []);
         } catch ($err) {
-          if (Opal.rescue($err, [$$($nesting, 'StandardError'), $$$($$$('::', 'Opal'), 'SyntaxError')])) {(error = $err)
+          if (Opal.rescue($err, [$$('StandardError'), $$$($Opal, 'SyntaxError')])) {(error = $err)
             try {
               
-              opal_location = $$$('::', 'Opal').$opal_location_from_error(error);
+              opal_location = $Opal.$opal_location_from_error(error);
               
               $writer = [self.$file()];
-              $send(opal_location, 'path=', Opal.to_a($writer));
+              $send(opal_location, 'path=', $to_a($writer));
               $writer[$rb_minus($writer["length"], 1)];;
-              if ($truthy(($ret_or_8 = opal_location.$label()))) {
-                $ret_or_8
+              if ($truthy(($ret_or_1 = opal_location.$label()))) {
+                $ret_or_1
               } else {
                 
                 $writer = [self.source.$lines()['$[]']($rb_minus(opal_location.$line().$to_i(), 1)).$strip()];
-                $send(opal_location, 'label=', Opal.to_a($writer));
+                $send(opal_location, 'label=', $to_a($writer));
                 $writer[$rb_minus($writer["length"], 1)];
               };
-              new_error = $$$($$$('::', 'Opal'), 'SyntaxError').$new(error.$message());
+              new_error = $$$($Opal, 'SyntaxError').$new(error.$message());
               new_error.$set_backtrace(error.$backtrace());
-              $$$('::', 'Opal').$add_opal_location_to_error(opal_location, new_error);
+              $Opal.$add_opal_location_to_error(opal_location, new_error);
               return self.$raise(new_error);
             } finally { Opal.pop_exception(); }
           } else { throw $err; }
         }
-      }, $Compiler_re_raise_with_location$17.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$warning', $Compiler_warning$18 = function $$warning(msg, line) {
+      $def(self, '$warning', function $$warning(msg, line) {
         var self = this;
 
         
         
-        if (line == null) {
-          line = nil;
-        };
-        return self.$warn("" + "warning: " + (msg) + " -- " + (self.$file()) + ":" + (line));
-      }, $Compiler_warning$18.$$arity = -2);
+        if (line == null) line = nil;;
+        return self.$warn("warning: " + (msg) + " -- " + (self.$file()) + ":" + (line));
+      }, -2);
       
-      Opal.def(self, '$parser_indent', $Compiler_parser_indent$19 = function $$parser_indent() {
+      $def(self, '$parser_indent', function $$parser_indent() {
         var self = this;
 
         return self.indent
-      }, $Compiler_parser_indent$19.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$s', $Compiler_s$20 = function $$s(type, $a) {
-        var $post_args, children, self = this;
+      $def(self, '$s', function $$s(type, $a) {
+        var $post_args, children;
 
         
         
-        $post_args = Opal.slice.call(arguments, 1, arguments.length);
+        $post_args = Opal.slice.call(arguments, 1);
         
         children = $post_args;;
-        return $$$($$$($$$('::', 'Opal'), 'AST'), 'Node').$new(type, children);
-      }, $Compiler_s$20.$$arity = -2);
+        return $$$($$$($Opal, 'AST'), 'Node').$new(type, children);
+      }, -2);
       
-      Opal.def(self, '$fragment', $Compiler_fragment$21 = function $$fragment(str, scope, sexp) {
-        var self = this;
-
+      $def(self, '$fragment', function $$fragment(str, scope, sexp) {
         
         
-        if (sexp == null) {
-          sexp = nil;
-        };
-        return $$($nesting, 'Fragment').$new(str, scope, sexp);
-      }, $Compiler_fragment$21.$$arity = -3);
+        
+        if (sexp == null) sexp = nil;;
+        return $$('Fragment').$new(str, scope, sexp);
+      }, -3);
       
-      Opal.def(self, '$unique_temp', $Compiler_unique_temp$22 = function $$unique_temp(name) {
-        var self = this, $ret_or_9 = nil, unique = nil;
+      $def(self, '$unique_temp', function $$unique_temp(name) {
+        var self = this, unique = nil;
 
         
         name = name.$to_s();
-        if ($truthy((function() {if ($truthy(($ret_or_9 = name))) {
-          return name['$empty?']()['$!']()
-        } else {
-          return $ret_or_9
-        }; return nil; })())) {
-          name = name.$to_s().$gsub("<=>", "$lt_eq_gt").$gsub("===", "$eq_eq_eq").$gsub("==", "$eq_eq").$gsub("=~", "$eq_tilde").$gsub("!~", "$excl_tilde").$gsub("!=", "$not_eq").$gsub("<=", "$lt_eq").$gsub(">=", "$gt_eq").$gsub("=", "$eq").$gsub("?", "$ques").$gsub("!", "$excl").$gsub("/", "$slash").$gsub("%", "$percent").$gsub("+", "$plus").$gsub("-", "$minus").$gsub("<", "$lt").$gsub(">", "$gt").$gsub(/[^\w\$]/, "$")};
+        if (($truthy(name) && ($not(name['$empty?']())))) {
+          name = name.$to_s().$gsub("<=>", "$lt_eq_gt").$gsub("===", "$eq_eq_eq").$gsub("==", "$eq_eq").$gsub("=~", "$eq_tilde").$gsub("!~", "$excl_tilde").$gsub("!=", "$not_eq").$gsub("<=", "$lt_eq").$gsub(">=", "$gt_eq").$gsub("=", "$eq").$gsub("?", "$ques").$gsub("!", "$excl").$gsub("/", "$slash").$gsub("%", "$percent").$gsub("+", "$plus").$gsub("-", "$minus").$gsub("<", "$lt").$gsub(">", "$gt").$gsub(/[^\w\$]/, "$")
+        };
         unique = (self.unique = $rb_plus(self.unique, 1));
-        return "" + ((function() {if ($truthy(name['$start_with?']("$"))) {
-          return nil
-        } else {
-          return "$"
-        }; return nil; })()) + (name) + "$" + (unique);
-      }, $Compiler_unique_temp$22.$$arity = 1);
+        return "" + (($truthy(name['$start_with?']("$")) ? (nil) : ("$"))) + (name) + "$" + (unique);
+      }, 1);
       
-      Opal.def(self, '$helper', $Compiler_helper$23 = function $$helper(name) {
+      $def(self, '$helper', function $$helper(name) {
         var self = this;
 
         return self.$helpers()['$<<'](name)
-      }, $Compiler_helper$23.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$indent', $Compiler_indent$24 = function $$indent() {
-        var $iter = $Compiler_indent$24.$$p, $yield = $iter || nil, self = this, indent = nil, res = nil;
+      $def(self, '$indent', function $$indent() {
+        var $yield = $$indent.$$p || nil, self = this, indent = nil, res = nil;
 
-        if ($iter) $Compiler_indent$24.$$p = null;
+        delete $$indent.$$p;
         
         indent = self.indent;
-        self.indent = $rb_plus(self.indent, $$($nesting, 'INDENT'));
-        self.space = "" + "\n" + (self.indent);
+        self.indent = $rb_plus(self.indent, $$('INDENT'));
+        self.space = "\n" + (self.indent);
         res = Opal.yieldX($yield, []);
         self.indent = indent;
-        self.space = "" + "\n" + (self.indent);
+        self.space = "\n" + (self.indent);
         return res;
-      }, $Compiler_indent$24.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$with_temp', $Compiler_with_temp$25 = function $$with_temp() {
-        var $iter = $Compiler_with_temp$25.$$p, $yield = $iter || nil, self = this, tmp = nil, res = nil;
+      $def(self, '$with_temp', function $$with_temp() {
+        var $yield = $$with_temp.$$p || nil, self = this, tmp = nil, res = nil;
 
-        if ($iter) $Compiler_with_temp$25.$$p = null;
+        delete $$with_temp.$$p;
         
         tmp = self.scope.$new_temp();
         res = Opal.yield1($yield, tmp);
         self.scope.$queue_temp(tmp);
         return res;
-      }, $Compiler_with_temp$25.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$in_while', $Compiler_in_while$26 = function $$in_while() {
-        var $iter = $Compiler_in_while$26.$$p, $yield = $iter || nil, self = this, result = nil;
+      $def(self, '$in_while', function $$in_while() {
+        var $yield = $$in_while.$$p || nil, self = this, result = nil;
 
-        if ($iter) $Compiler_in_while$26.$$p = null;
+        delete $$in_while.$$p;
         
-        if (($yield !== nil)) {
-        } else {
+        if (!($yield !== nil)) {
           return nil
         };
         self.while_loop = self.scope.$push_while();
         result = Opal.yieldX($yield, []);
         self.scope.$pop_while();
         return result;
-      }, $Compiler_in_while$26.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$in_case', $Compiler_in_case$27 = function $$in_case() {
-        var $iter = $Compiler_in_case$27.$$p, $yield = $iter || nil, self = this, old = nil;
+      $def(self, '$in_case', function $$in_case() {
+        var $yield = $$in_case.$$p || nil, self = this, old = nil;
 
-        if ($iter) $Compiler_in_case$27.$$p = null;
+        delete $$in_case.$$p;
         
-        if (($yield !== nil)) {
-        } else {
+        if (!($yield !== nil)) {
           return nil
         };
         old = self.case_stmt;
         self.case_stmt = $hash2([], {});
         Opal.yieldX($yield, []);
         return (self.case_stmt = old);
-      }, $Compiler_in_case$27.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$in_while?', $Compiler_in_while$ques$28 = function() {
+      $def(self, '$in_while?', function $Compiler_in_while$ques$8() {
         var self = this;
 
         return self.scope['$in_while?']()
-      }, $Compiler_in_while$ques$28.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$process', $Compiler_process$29 = function $$process(sexp, level) {
+      $def(self, '$process', function $$process(sexp, level) {
         var self = this, handler = nil;
 
         
         
-        if (level == null) {
-          level = "expr";
-        };
+        if (level == null) level = "expr";;
         if ($truthy(sexp['$nil?']())) {
-          return self.$fragment("", self.$scope())};
+          return self.$fragment("", self.$scope())
+        };
         if ($truthy((handler = self.$handlers()['$[]'](sexp.$type())))) {
           return handler.$new(sexp, level, self).$compile_to_fragments()
         } else {
-          return self.$error("" + "Unsupported sexp: " + (sexp.$type()))
+          return self.$error("Unsupported sexp: " + (sexp.$type()))
         };
-      }, $Compiler_process$29.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$handlers', $Compiler_handlers$30 = function $$handlers() {
-        var self = this, $ret_or_10 = nil;
+      $def(self, '$handlers', function $$handlers() {
+        var self = this, $ret_or_1 = nil;
 
-        return (self.handlers = (function() {if ($truthy(($ret_or_10 = self.handlers))) {
-          return $ret_or_10
-        } else {
-          return $$$($$$($$($nesting, 'Opal'), 'Nodes'), 'Base').$handlers()
-        }; return nil; })())
-      }, $Compiler_handlers$30.$$arity = 0);
+        return (self.handlers = ($truthy(($ret_or_1 = self.handlers)) ? ($ret_or_1) : ($$$($$$($$('Opal'), 'Nodes'), 'Base').$handlers())))
+      }, 0);
       
-      Opal.def(self, '$requires', $Compiler_requires$31 = function $$requires() {
-        var self = this, $ret_or_11 = nil;
+      $def(self, '$requires', function $$requires() {
+        var self = this, $ret_or_1 = nil;
 
-        return (self.requires = (function() {if ($truthy(($ret_or_11 = self.requires))) {
-          return $ret_or_11
-        } else {
-          return []
-        }; return nil; })())
-      }, $Compiler_requires$31.$$arity = 0);
+        return (self.requires = ($truthy(($ret_or_1 = self.requires)) ? ($ret_or_1) : ([])))
+      }, 0);
       
-      Opal.def(self, '$required_trees', $Compiler_required_trees$32 = function $$required_trees() {
-        var self = this, $ret_or_12 = nil;
+      $def(self, '$required_trees', function $$required_trees() {
+        var self = this, $ret_or_1 = nil;
 
-        return (self.required_trees = (function() {if ($truthy(($ret_or_12 = self.required_trees))) {
-          return $ret_or_12
-        } else {
-          return []
-        }; return nil; })())
-      }, $Compiler_required_trees$32.$$arity = 0);
+        return (self.required_trees = ($truthy(($ret_or_1 = self.required_trees)) ? ($ret_or_1) : ([])))
+      }, 0);
       
-      Opal.def(self, '$returns', $Compiler_returns$33 = function $$returns(sexp) {
-        var $a, $b, $$34, self = this, $case = nil, when_sexp = nil, then_sexp = nil, body_sexp = nil, resbodies = nil, else_sexp = nil, klass = nil, lvar = nil, body = nil, rescue_sexp = nil, ensure_body = nil, rest = nil, last = nil, cond = nil, true_body = nil, false_body = nil;
+      $def(self, '$autoloads', function $$autoloads() {
+        var self = this, $ret_or_1 = nil;
+
+        return (self.autoloads = ($truthy(($ret_or_1 = self.autoloads)) ? ($ret_or_1) : ([])))
+      }, 0);
+      
+      $def(self, '$returns', function $$returns(sexp) {
+        var $a, $b, self = this, $ret_or_1 = nil, when_sexp = nil, then_sexp = nil, body_sexp = nil, resbodies = nil, else_sexp = nil, klass = nil, lvar = nil, body = nil, rescue_sexp = nil, ensure_body = nil, rest = nil, last = nil, cond = nil, true_body = nil, false_body = nil;
 
         
-        if ($truthy(sexp)) {
-        } else {
+        if (!$truthy(sexp)) {
           return self.$returns(self.$s("nil"))
         };
-        return (function() {$case = sexp.$type();
-        if ("undef"['$===']($case)) {return self.$returns(self.$s("begin", sexp, self.$s("nil")))}
-        else if ("break"['$===']($case) || "next"['$===']($case) || "redo"['$===']($case) || "retry"['$===']($case)) {return sexp}
-        else if ("yield"['$===']($case)) {return sexp.$updated("returnable_yield", nil)}
-        else if ("when"['$===']($case)) {
-        $a = [].concat(Opal.to_a(sexp)), $b = $a.length - 1, $b = ($b < 0) ? 0 : $b, (when_sexp = $slice.call($a, 0, $b)), (then_sexp = ($a[$b] == null ? nil : $a[$b])), $a;
-        return sexp.$updated(nil, [].concat(Opal.to_a(when_sexp)).concat([self.$returns(then_sexp)]));}
-        else if ("rescue"['$===']($case)) {
-        $a = [].concat(Opal.to_a(sexp)), (body_sexp = ($a[0] == null ? nil : $a[0])), $b = $a.length - 1, $b = ($b < 1) ? 1 : $b, (resbodies = $slice.call($a, 1, $b)), (else_sexp = ($a[$b] == null ? nil : $a[$b])), $a;
-        resbodies = $send(resbodies, 'map', [], ($$34 = function(resbody){var self = $$34.$$s == null ? this : $$34.$$s;
-
-          
-          
-          if (resbody == null) {
-            resbody = nil;
-          };
-          return self.$returns(resbody);}, $$34.$$s = self, $$34.$$arity = 1, $$34));
-        if ($truthy(else_sexp)) {
-          else_sexp = self.$returns(else_sexp)};
-        return sexp.$updated(nil, [self.$returns(body_sexp)].concat(Opal.to_a(resbodies)).concat([else_sexp]));}
-        else if ("resbody"['$===']($case)) {
-        $a = [].concat(Opal.to_a(sexp)), (klass = ($a[0] == null ? nil : $a[0])), (lvar = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), $a;
-        return sexp.$updated(nil, [klass, lvar, self.$returns(body)]);}
-        else if ("ensure"['$===']($case)) {
-        $a = [].concat(Opal.to_a(sexp)), (rescue_sexp = ($a[0] == null ? nil : $a[0])), (ensure_body = ($a[1] == null ? nil : $a[1])), $a;
-        sexp = sexp.$updated(nil, [self.$returns(rescue_sexp), ensure_body]);
-        return self.$s("js_return", sexp);}
-        else if ("begin"['$===']($case) || "kwbegin"['$===']($case)) {
-        $a = [].concat(Opal.to_a(sexp)), $b = $a.length - 1, $b = ($b < 0) ? 0 : $b, (rest = $slice.call($a, 0, $b)), (last = ($a[$b] == null ? nil : $a[$b])), $a;
-        return sexp.$updated(nil, [].concat(Opal.to_a(rest)).concat([self.$returns(last)]));}
-        else if ("while"['$===']($case) || "until"['$===']($case) || "while_post"['$===']($case) || "until_post"['$===']($case)) {return sexp}
-        else if ("return"['$===']($case) || "js_return"['$===']($case) || "returnable_yield"['$===']($case)) {return sexp}
-        else if ("xstr"['$===']($case)) {return sexp.$updated(nil, [$send(self, 's', ["js_return"].concat(Opal.to_a(sexp.$children())))])}
-        else if ("if"['$===']($case)) {
-        $a = [].concat(Opal.to_a(sexp)), (cond = ($a[0] == null ? nil : $a[0])), (true_body = ($a[1] == null ? nil : $a[1])), (false_body = ($a[2] == null ? nil : $a[2])), $a;
-        return sexp.$updated(nil, [cond, self.$returns(true_body), self.$returns(false_body)]);}
-        else {return self.$s("js_return", sexp).$updated(nil, nil, $hash2(["location"], {"location": sexp.$loc()}))}})();
-      }, $Compiler_returns$33.$$arity = 1);
-      
-      Opal.def(self, '$handle_block_given_call', $Compiler_handle_block_given_call$35 = function $$handle_block_given_call(sexp) {
-        var self = this, $ret_or_13 = nil, scope = nil;
+        if ($eqeqeq("undef", ($ret_or_1 = sexp.$type()))) {
+          return self.$returns(sexp.$updated("begin", [sexp, self.$s("nil")]))
+        } else if (($eqeqeq("break", $ret_or_1) || (($eqeqeq("next", $ret_or_1) || (($eqeqeq("redo", $ret_or_1) || ($eqeqeq("retry", $ret_or_1)))))))) {
+          return sexp
+        } else if ($eqeqeq("yield", $ret_or_1)) {
+          return sexp.$updated("returnable_yield", nil)
+        } else if ($eqeqeq("when", $ret_or_1)) {
+          
+          $a = [].concat($to_a(sexp)), $b = $a.length - 1, $b = ($b < 0) ? 0 : $b, (when_sexp = $slice.call($a, 0, $b)), (then_sexp = ($a[$b] == null ? nil : $a[$b])), $a;
+          return sexp.$updated(nil, [].concat($to_a(when_sexp)).concat([self.$returns(then_sexp)]));
+        } else if ($eqeqeq("rescue", $ret_or_1)) {
+          
+          $a = [].concat($to_a(sexp)), (body_sexp = ($a[0] == null ? nil : $a[0])), $b = $a.length - 1, $b = ($b < 1) ? 1 : $b, (resbodies = $slice.call($a, 1, $b)), (else_sexp = ($a[$b] == null ? nil : $a[$b])), $a;
+          resbodies = $send(resbodies, 'map', [], function $$9(resbody){var self = $$9.$$s == null ? this : $$9.$$s;
+
+            
+            
+            if (resbody == null) resbody = nil;;
+            return self.$returns(resbody);}, {$$arity: 1, $$s: self});
+          if ($truthy(else_sexp)) {
+            else_sexp = self.$returns(else_sexp)
+          };
+          return sexp.$updated(nil, [self.$returns(body_sexp)].concat($to_a(resbodies)).concat([else_sexp]));
+        } else if ($eqeqeq("resbody", $ret_or_1)) {
+          
+          $a = [].concat($to_a(sexp)), (klass = ($a[0] == null ? nil : $a[0])), (lvar = ($a[1] == null ? nil : $a[1])), (body = ($a[2] == null ? nil : $a[2])), $a;
+          return sexp.$updated(nil, [klass, lvar, self.$returns(body)]);
+        } else if ($eqeqeq("ensure", $ret_or_1)) {
+          
+          $a = [].concat($to_a(sexp)), (rescue_sexp = ($a[0] == null ? nil : $a[0])), (ensure_body = ($a[1] == null ? nil : $a[1])), $a;
+          sexp = sexp.$updated(nil, [self.$returns(rescue_sexp), ensure_body]);
+          return sexp.$updated("js_return", [sexp]);
+        } else if (($eqeqeq("begin", $ret_or_1) || ($eqeqeq("kwbegin", $ret_or_1)))) {
+          
+          $a = [].concat($to_a(sexp)), $b = $a.length - 1, $b = ($b < 0) ? 0 : $b, (rest = $slice.call($a, 0, $b)), (last = ($a[$b] == null ? nil : $a[$b])), $a;
+          return sexp.$updated(nil, [].concat($to_a(rest)).concat([self.$returns(last)]));
+        } else if (($eqeqeq("while", $ret_or_1) || (($eqeqeq("until", $ret_or_1) || (($eqeqeq("while_post", $ret_or_1) || ($eqeqeq("until_post", $ret_or_1)))))))) {
+          return sexp
+        } else if (($eqeqeq("return", $ret_or_1) || (($eqeqeq("js_return", $ret_or_1) || ($eqeqeq("returnable_yield", $ret_or_1)))))) {
+          return sexp
+        } else if ($eqeqeq("xstr", $ret_or_1)) {
+          return sexp.$updated(nil, [$send(self, 's', ["js_return"].concat($to_a(sexp.$children())))])
+        } else if ($eqeqeq("if", $ret_or_1)) {
+          
+          $a = [].concat($to_a(sexp)), (cond = ($a[0] == null ? nil : $a[0])), (true_body = ($a[1] == null ? nil : $a[1])), (false_body = ($a[2] == null ? nil : $a[2])), $a;
+          return sexp.$updated(nil, [cond, self.$returns(true_body), self.$returns(false_body)]);
+        } else if (($eqeq(sexp.$type(), "send") && ($eqeq(sexp.$children()['$[]'](1), "debugger")))) {
+          return sexp.$updated("begin", [sexp, self.$s("js_return", self.$s("nil"))])
+        } else {
+          return sexp.$updated("js_return", [sexp])
+        };
+      }, 1);
+      
+      $def(self, '$handle_block_given_call', function $$handle_block_given_call(sexp) {
+        var self = this, scope = nil;
 
         
         self.scope['$uses_block!']();
         if ($truthy(self.scope.$block_name())) {
-          return self.$fragment("" + "(" + (self.scope.$block_name()) + " !== nil)", self.$scope(), sexp)
-        } else if ($truthy((function() {if ($truthy(($ret_or_13 = (scope = self.scope.$find_parent_def())))) {
-          return scope.$block_name()
-        } else {
-          return $ret_or_13
-        }; return nil; })())) {
-          return self.$fragment("" + "(" + (scope.$block_name()) + " !== nil)", scope, sexp)
+          return self.$fragment("(" + (self.scope.$block_name()) + " !== nil)", self.$scope(), sexp)
+        } else if (($truthy((scope = self.scope.$find_parent_def())) && ($truthy(scope.$block_name())))) {
+          return self.$fragment("(" + (scope.$block_name()) + " !== nil)", scope, sexp)
         } else {
           return self.$fragment("false", scope, sexp)
         };
-      }, $Compiler_handle_block_given_call$35.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$marshal_dump', $Compiler_marshal_dump$36 = function $$marshal_dump() {
-        var self = this, $ret_or_14 = nil;
+      $def(self, '$marshal_dump', function $$marshal_dump() {
+        var self = this, $ret_or_1 = nil;
 
-        return [self.options, self.option_values, (self.source_map = (function() {if ($truthy(($ret_or_14 = self.source_map))) {
-          return $ret_or_14
-        } else {
-          return self.$source_map().$cache()
-        }; return nil; })()), self.magic_comments, self.result, self.required_trees, self.requires]
-      }, $Compiler_marshal_dump$36.$$arity = 0);
-      return (Opal.def(self, '$marshal_load', $Compiler_marshal_load$37 = function $$marshal_load(src) {
+        return [self.options, self.option_values, (self.source_map = ($truthy(($ret_or_1 = self.source_map)) ? ($ret_or_1) : (self.$source_map().$cache()))), self.magic_comments, self.result, self.required_trees, self.requires, self.autoloads]
+      }, 0);
+      return $def(self, '$marshal_load', function $$marshal_load(src) {
         var $a, $b, self = this;
 
-        return $b = src, $a = Opal.to_ary($b), (self.options = ($a[0] == null ? nil : $a[0])), (self.option_values = ($a[1] == null ? nil : $a[1])), (self.source_map = ($a[2] == null ? nil : $a[2])), (self.magic_comments = ($a[3] == null ? nil : $a[3])), (self.result = ($a[4] == null ? nil : $a[4])), (self.required_trees = ($a[5] == null ? nil : $a[5])), (self.requires = ($a[6] == null ? nil : $a[6])), $b
-      }, $Compiler_marshal_load$37.$$arity = 1), nil) && 'marshal_load';
+        return $b = src, $a = $to_ary($b), (self.options = ($a[0] == null ? nil : $a[0])), (self.option_values = ($a[1] == null ? nil : $a[1])), (self.source_map = ($a[2] == null ? nil : $a[2])), (self.magic_comments = ($a[3] == null ? nil : $a[3])), (self.result = ($a[4] == null ? nil : $a[4])), (self.required_trees = ($a[5] == null ? nil : $a[5])), (self.requires = ($a[6] == null ? nil : $a[6])), (self.autoloads = ($a[7] == null ? nil : $a[7])), $b
+      }, 1);
     })($nesting[0], null, $nesting);
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/erb"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send;
+Opal.modules["opal/erb"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $module = Opal.module, $defs = Opal.defs, $klass = Opal.klass, $const_set = Opal.const_set, $def = Opal.def, $truthy = Opal.truthy, $rb_plus = Opal.rb_plus, $send = Opal.send, $regexp = Opal.regexp;
 
-  Opal.add_stubs(['$require', '$compile', '$new', '$freeze', '$fix_quotes', '$find_contents', '$find_code', '$wrap_compiled', '$require_erb', '$prepared_source', '$gsub', '$+', '$last_match', '$=~', '$sub']);
+  Opal.add_stubs('require,compile,new,freeze,fix_quotes,find_contents,find_code,wrap_compiled,require_erb,prepared_source,gsub,+,last_match,=~,sub');
   
   self.$require("opal/compiler");
   return (function($base, $parent_nesting) {
@@ -40514,114 +36986,93 @@ Opal.modules["opal/erb"] = function(Opal) {
     return (function($base, $parent_nesting) {
       var self = $module($base, 'ERB');
 
-      var $nesting = [self].concat($parent_nesting), $ERB_compile$1;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
-      Opal.defs(self, '$compile', $ERB_compile$1 = function $$compile(source, file_name) {
-        var self = this;
-
+      $defs(self, '$compile', function $$compile(source, file_name) {
         
         
-        if (file_name == null) {
-          file_name = "(erb)";
-        };
-        return $$($nesting, 'Compiler').$new(source, file_name).$compile();
-      }, $ERB_compile$1.$$arity = -2);
+        
+        if (file_name == null) file_name = "(erb)";;
+        return $$('Compiler').$new(source, file_name).$compile();
+      }, -2);
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'Compiler');
 
-        var $nesting = [self].concat($parent_nesting), $Compiler_initialize$2, $Compiler_prepared_source$3, $Compiler_compile$4, $Compiler_fix_quotes$5, $Compiler_require_erb$6, $Compiler_find_contents$7, $Compiler_find_code$9, $Compiler_wrap_compiled$11;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.prepared_source = self.$$prototype.source = self.$$prototype.file_name = nil;
+        $proto.prepared_source = $proto.source = $proto.file_name = nil;
         
-        Opal.const_set($nesting[0], 'BLOCK_EXPR', /\s+(do|\{)(\s*\|[^|]*\|)?\s*\Z/.$freeze());
+        $const_set($nesting[0], 'BLOCK_EXPR', /\s+(do|\{)(\s*\|[^|]*\|)?\s*\Z/.$freeze());
         
-        Opal.def(self, '$initialize', $Compiler_initialize$2 = function $$initialize(source, file_name) {
+        $def(self, '$initialize', function $$initialize(source, file_name) {
           var $a, self = this;
 
           
           
-          if (file_name == null) {
-            file_name = "(erb)";
-          };
+          if (file_name == null) file_name = "(erb)";;
           return $a = [source, file_name, source], (self.source = $a[0]), (self.file_name = $a[1]), (self.result = $a[2]), $a;
-        }, $Compiler_initialize$2.$$arity = -2);
+        }, -2);
         
-        Opal.def(self, '$prepared_source', $Compiler_prepared_source$3 = function $$prepared_source() {
+        $def(self, '$prepared_source', function $$prepared_source() {
           var self = this, $ret_or_1 = nil, source = nil;
 
-          return (self.prepared_source = (function() {if ($truthy(($ret_or_1 = self.prepared_source))) {
-            return $ret_or_1
-          } else {
-            
-            source = self.source;
-            source = self.$fix_quotes(source);
-            source = self.$find_contents(source);
-            source = self.$find_code(source);
-            source = self.$wrap_compiled(source);
-            source = self.$require_erb(source);
-            return source;
-          }; return nil; })())
-        }, $Compiler_prepared_source$3.$$arity = 0);
+          return (self.prepared_source = ($truthy(($ret_or_1 = self.prepared_source)) ? ($ret_or_1) : (((source = self.source), (source = self.$fix_quotes(source)), (source = self.$find_contents(source)), (source = self.$find_code(source)), (source = self.$wrap_compiled(source)), (source = self.$require_erb(source)), source))))
+        }, 0);
         
-        Opal.def(self, '$compile', $Compiler_compile$4 = function $$compile() {
+        $def(self, '$compile', function $$compile() {
           var self = this;
 
-          return $$($nesting, 'Opal').$compile(self.$prepared_source())
-        }, $Compiler_compile$4.$$arity = 0);
+          return $$('Opal').$compile(self.$prepared_source())
+        }, 0);
         
-        Opal.def(self, '$fix_quotes', $Compiler_fix_quotes$5 = function $$fix_quotes(result) {
-          var self = this;
-
+        $def(self, '$fix_quotes', function $$fix_quotes(result) {
+          
           return result.$gsub("\"", "\\\"")
-        }, $Compiler_fix_quotes$5.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$require_erb', $Compiler_require_erb$6 = function $$require_erb(result) {
-          var self = this;
-
+        $def(self, '$require_erb', function $$require_erb(result) {
+          
           return $rb_plus("require \"erb\";", result)
-        }, $Compiler_require_erb$6.$$arity = 1);
+        }, 1);
         
-        Opal.def(self, '$find_contents', $Compiler_find_contents$7 = function $$find_contents(result) {
-          var $$8, self = this;
-
-          return $send(result, 'gsub', [/<%=([\s\S]+?)%>/], ($$8 = function(){var self = $$8.$$s == null ? this : $$8.$$s, inner = nil;
+        $def(self, '$find_contents', function $$find_contents(result) {
+          
+          return $send(result, 'gsub', [/<%=([\s\S]+?)%>/], function $$1(){var inner = nil;
 
             
-            inner = $$($nesting, 'Regexp').$last_match(1).$gsub(/\\'/, "'").$gsub(/\\"/, "\"");
-            if ($truthy(inner['$=~']($$($nesting, 'BLOCK_EXPR')))) {
-              return "" + "\")\noutput_buffer.append= " + (inner) + "\noutput_buffer.append(\""
+            inner = $$('Regexp').$last_match(1).$gsub(/\\'/, "'").$gsub(/\\"/, "\"");
+            if ($truthy(inner['$=~']($$('BLOCK_EXPR')))) {
+              return "\")\noutput_buffer.append= " + (inner) + "\noutput_buffer.append(\""
             } else {
-              return "" + "\")\noutput_buffer.append=(" + (inner) + ")\noutput_buffer.append(\""
-            };}, $$8.$$s = self, $$8.$$arity = 0, $$8))
-        }, $Compiler_find_contents$7.$$arity = 1);
+              return "\")\noutput_buffer.append=(" + (inner) + ")\noutput_buffer.append(\""
+            };}, 0)
+        }, 1);
         
-        Opal.def(self, '$find_code', $Compiler_find_code$9 = function $$find_code(result) {
-          var $$10, self = this;
-
-          return $send(result, 'gsub', [/<%([\s\S]+?)%>/], ($$10 = function(){var self = $$10.$$s == null ? this : $$10.$$s, inner = nil;
+        $def(self, '$find_code', function $$find_code(result) {
+          
+          return $send(result, 'gsub', [/<%([\s\S]+?)%>/], function $$2(){var inner = nil;
 
             
-            inner = $$($nesting, 'Regexp').$last_match(1).$gsub(/\\"/, "\"");
-            return "" + "\")\n" + (inner) + "\noutput_buffer.append(\"";}, $$10.$$s = self, $$10.$$arity = 0, $$10))
-        }, $Compiler_find_code$9.$$arity = 1);
-        return (Opal.def(self, '$wrap_compiled', $Compiler_wrap_compiled$11 = function $$wrap_compiled(result) {
+            inner = $$('Regexp').$last_match(1).$gsub(/\\"/, "\"");
+            return "\")\n" + (inner) + "\noutput_buffer.append(\"";}, 0)
+        }, 1);
+        return $def(self, '$wrap_compiled', function $$wrap_compiled(result) {
           var self = this, path = nil;
 
           
-          path = self.file_name.$sub(Opal.regexp(["\\.opalerb", $$($nesting, 'REGEXP_END')]), "");
-          return "" + "Template.new('" + (path) + "') do |output_buffer|\noutput_buffer.append(\"" + (result) + "\")\noutput_buffer.join\nend\n";
-        }, $Compiler_wrap_compiled$11.$$arity = 1), nil) && 'wrap_compiled';
+          path = self.file_name.$sub($regexp(["\\.opalerb", $$('REGEXP_END')]), "");
+          return "Template.new('" + (path) + "') do |output_buffer|\noutput_buffer.append(\"" + (result) + "\")\noutput_buffer.join\nend\n";
+        }, 1);
       })($nesting[0], null, $nesting);
     })($nesting[0], $nesting)
   })($nesting[0], $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal-parser"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $hash2 = Opal.hash2, $truthy = Opal.truthy;
+Opal.modules["opal-parser"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $module = Opal.module, $Opal = Opal.Opal, $hash2 = Opal.hash2, $truthy = Opal.truthy, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$coerce_to!', '$merge', '$js_eval']);
+  Opal.add_stubs('require,coerce_to!,merge,js_eval');
   
   self.$require("corelib/string/unpack");
   self.$require("opal/compiler");
@@ -40630,32 +37081,22 @@ Opal.modules["opal-parser"] = function(Opal) {
   (function($base, $parent_nesting) {
     var self = $module($base, 'Kernel');
 
-    var $nesting = [self].concat($parent_nesting), $Kernel_eval$1, $Kernel_require_remote$2;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
     
-    Opal.def(self, '$eval', $Kernel_eval$1 = function(str, binding, file, line) {
+    $def(self, '$eval', function $Kernel_eval$1(str, binding, file, line) {
       var self = this, default_eval_options = nil, $ret_or_1 = nil, compiling_options = nil, code = nil;
 
       
       
-      if (binding == null) {
-        binding = nil;
-      };
+      if (binding == null) binding = nil;;
       
-      if (file == null) {
-        file = nil;
-      };
+      if (file == null) file = nil;;
       
-      if (line == null) {
-        line = nil;
-      };
-      str = $$($nesting, 'Opal')['$coerce_to!'](str, $$($nesting, 'String'), "to_str");
-      default_eval_options = $hash2(["file", "eval"], {"file": (function() {if ($truthy(($ret_or_1 = file))) {
-        return $ret_or_1
-      } else {
-        return "(eval)"
-      }; return nil; })(), "eval": true});
+      if (line == null) line = nil;;
+      str = $Opal['$coerce_to!'](str, $$('String'), "to_str");
+      default_eval_options = $hash2(["file", "eval"], {"file": ($truthy(($ret_or_1 = file)) ? ($ret_or_1) : ("(eval)")), "eval": true});
       compiling_options = Opal.hash({ arity_check: false }).$merge(default_eval_options);
       code = Opal.compile(str, compiling_options);
       if ($truthy(binding)) {
@@ -40667,8 +37108,8 @@ Opal.modules["opal-parser"] = function(Opal) {
         })(self)
       
       };
-    }, $Kernel_eval$1.$$arity = -2);
-    return (Opal.def(self, '$require_remote', $Kernel_require_remote$2 = function $$require_remote(url) {
+    }, -2);
+    return $def(self, '$require_remote', function $$require_remote(url) {
       var $a, self = this;
 
       
@@ -40678,12 +37119,12 @@ Opal.modules["opal-parser"] = function(Opal) {
       r.send('');
     ;
       return ($a = r.responseText, typeof Opal.compile === 'function' ? eval(Opal.compile($a, {scope_variables: ["url"], arity_check: false, file: '(eval)', eval: true})) : self.$eval($a));
-    }, $Kernel_require_remote$2.$$arity = 1), nil) && 'require_remote';
+    }, 1);
   })($nesting[0], $nesting);
   
   Opal.compile = function(str, options) {
     try {
-      str = $$($nesting, 'Opal')['$coerce_to!'](str, $$($nesting, 'String'), "to_str")
+      str = $Opal['$coerce_to!'](str, $$('String'), "to_str")
       if (options) options = Opal.hash(options);
       return Opal.Opal.$compile(str, options);
     }
diff --git a/opal/master/opal-parser.min.js b/opal/master/opal-parser.min.js
index 0de1f0c7..ff8b1d35 100644
--- a/opal/master/opal-parser.min.js
+++ b/opal/master/opal-parser.min.js
@@ -1 +1 @@
-Opal.modules.base64=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$hash2=Opal.hash2,$truthy=Opal.truthy;return Opal.add_stubs(["$raise","$delete"]),function($base,$Base64_urlsafe_encode64$6){var self=$module($base,"Base64"),$nesting=[self].concat($Base64_urlsafe_encode64$6),chars="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",encode=function(input){for(var block,charCode,str=String(input),idx=0,map=chars,output="";str.charAt(0|idx)||(map="=",idx%1);output+=map.charAt(63&block>>8-idx%1*8))255<(charCode=str.charCodeAt(idx+=.75))&&self.$raise($$($nesting,"ArgumentError"),"invalid character (failed: The string to be encoded contains characters outside of the Latin1 range.)"),block=block<<8|charCode;return output},decode=function(input){var str=String(input).replace(/=+$/,"");str.length%4==1&&self.$raise($$($nesting,"ArgumentError"),"invalid base64 (failed: The string to be decoded is not correctly encoded.)");for(var bs,buffer,bc=0,idx=0,output="";buffer=str.charAt(idx++);~buffer&&(bs=bc%4?64*bs+buffer:buffer,bc++%4)&&(output+=String.fromCharCode(255&bs>>(-2*bc&6))))buffer=chars.indexOf(buffer);return output};return Opal.defs(self,"$decode64",$Base64_urlsafe_encode64$6=function(string){return decode(string.replace(/\r?\n/g,""))},$Base64_urlsafe_encode64$6.$$arity=1),Opal.defs(self,"$encode64",$Base64_urlsafe_encode64$6=function(string){return encode(string).replace(/(.{60})/g,"$1\n").replace(/([^\n])$/g,"$1\n")},$Base64_urlsafe_encode64$6.$$arity=1),Opal.defs(self,"$strict_decode64",$Base64_urlsafe_encode64$6=function(string){return decode(string)},$Base64_urlsafe_encode64$6.$$arity=1),Opal.defs(self,"$strict_encode64",$Base64_urlsafe_encode64$6=function(string){return encode(string)},$Base64_urlsafe_encode64$6.$$arity=1),Opal.defs(self,"$urlsafe_decode64",$Base64_urlsafe_encode64$6=function(string){return decode(string.replace(/\-/g,"+").replace(/_/g,"/"))},$Base64_urlsafe_encode64$6.$$arity=1),Opal.defs(self,"$urlsafe_encode64",$Base64_urlsafe_encode64$6=function(string,padding){var str=nil;if(null==padding)padding=$hash2([],{});else if(!padding.$$is_hash)throw Opal.ArgumentError.$new("expected kwargs");return null==(padding=padding.$$smap.padding)&&(padding=!0),str=encode(string).replace(/\+/g,"-").replace(/\//g,"_"),$truthy(padding)||(str=str.$delete("=")),str},$Base64_urlsafe_encode64$6.$$arity=-2),nil&&"urlsafe_encode64"}($nesting[0],$nesting)},Opal.modules["corelib/pack_unpack/format_string_parser"]=function(Opal){Opal.top;var $nesting=[],$$=(Opal.nil,Opal.$$$,Opal.$$),$module=Opal.module;return Opal.add_stubs(["$raise"]),function($base,$parent_nesting){var self=$module($base,"PackUnpack"),$nesting=[self].concat($parent_nesting),directives=["C","S","L","Q","J","c","s","l","q","j","n","N","v","V","U","w","D","d","F","f","E","e","G","g","A","a","Z","B","b","H","h","u","M","m","P","p","@","X","x"],modifiers=["!","_",">","<"];self.eachDirectiveAndCount=function(format,callback){var currentDirective,currentCount,currentModifiers,countSpecified;function reset(){currentDirective=null,currentCount=0,countSpecified=!(currentModifiers=[])}function yieldAndReset(){null!=currentDirective&&(!/[sSiIlLqQjJ]/.test(currentDirective)&&0<currentModifiers.length&&self.$raise($$($nesting,"ArgumentError"),"'"+currentModifiers[0]+"' allowed only after types sSiIlLqQjJ"),-1!==currentModifiers.indexOf("<")&&-1!==currentModifiers.indexOf(">")&&self.$raise($$($nesting,"RangeError"),"Can't use both '<' and '>'"),countSpecified||(currentCount=1),-1!==currentModifiers.indexOf(">")&&(currentDirective+=">"),callback(currentDirective,currentCount)),reset()}reset();for(var i=0;i<format.length;i++){var currentChar=format[i];-1!==directives.indexOf(currentChar)?(yieldAndReset(),currentDirective=currentChar):currentDirective&&(/\d/.test(currentChar)?(currentCount=10*currentCount+parseInt(currentChar,10),countSpecified=!0):"*"===currentChar&&!1===countSpecified?(currentCount=1/0,countSpecified=!0):-1!==modifiers.indexOf(currentChar)&&!1===countSpecified?currentModifiers.push(currentChar):yieldAndReset())}yieldAndReset()}}($nesting[0],$nesting)},Opal.modules["corelib/string/unpack"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$klass=Opal.klass;return 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$truthy(node["$nil?"]())?nil:(on_handler="on_"+(node=node.$to_ast()).$type(),new_node=$truthy(this["$respond_to?"](on_handler))?this.$send(on_handler,node):this.$handler_missing(node),$truthy(new_node)&&(node=new_node),node)},$Mixin_process_all$2.$$arity=1),Opal.def($Mixin_handler_missing$4,"$process_all",$Mixin_process_all$2=function(nodes){var $$3;return $send(nodes.$to_a(),"map",[],(($$3=function(node){var self=null==$$3.$$s?this:$$3.$$s;return null==node&&(node=nil),self.$process(node)}).$$s=this,$$3.$$arity=1,$$3))},$Mixin_process_all$2.$$arity=1),Opal.def($Mixin_handler_missing$4,"$handler_missing",$Mixin_handler_missing$4=function(){return nil},$Mixin_handler_missing$4.$$arity=1),nil&&"handler_missing"}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["ast/processor"]=function(Opal){Opal.top;var $nesting=[],$$=(Opal.nil,Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass;return 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$truthy(meta=properties["$[]"]("meta"))?($truthy(meta["$frozen?"]())&&(meta=meta.$dup()),self.meta["$merge!"](meta)):self.meta=$truthy($ret_or_1=self.meta)?$ret_or_1:$hash2([],{}),$send2(self,$find_super(self,"assign_properties",$Node_assign_properties$1,!1,!0),"assign_properties",$zuper,$iter)},$Node_assign_properties$1.$$arity=1),Opal.def($Node_column$3,"$line",$Node_line$2=function(){return $truthy(this.$loc())?this.$loc().$line():nil},$Node_line$2.$$arity=0),Opal.def($Node_column$3,"$column",$Node_column$3=function(){return $truthy(this.$loc())?this.$loc().$column():nil},$Node_column$3.$$arity=0),nil&&"column"}($nesting[0],$$$($$$($$$("::","Parser"),"AST"),"Node"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["racc/parser"]=function(Opal){function $rb_lt(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs<rhs:lhs["$<"](rhs)}function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}function $rb_ge(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?rhs<=lhs:lhs["$>="](rhs)}function $rb_gt(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?rhs<lhs:lhs["$>"](rhs)}Opal.top;var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$gvars=Opal.gvars,$send=Opal.send;return 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$truthy($$($nesting,"Racc_No_Extensions","skip_raise")?"constant":nil)||Opal.const_set($nesting[0],"Racc_No_Extensions",!1),function($Parser_token_to_str$31,$Parser_racc_token2str$30){var $Parser_token_to_str$31=$klass($Parser_token_to_str$31,null,"Parser"),$nesting=[$Parser_token_to_str$31].concat($Parser_racc_token2str$30);return $Parser_token_to_str$31.$$prototype.yydebug=$Parser_token_to_str$31.$$prototype.racc_debug_out=$Parser_token_to_str$31.$$prototype.racc_error_status=$Parser_token_to_str$31.$$prototype.racc_t=$Parser_token_to_str$31.$$prototype.racc_vstack=$Parser_token_to_str$31.$$prototype.racc_val=$Parser_token_to_str$31.$$prototype.racc_state=$Parser_token_to_str$31.$$prototype.racc_tstack=nil,Opal.const_set($nesting[0],"Racc_Runtime_Version","1.4.6"),Opal.const_set($nesting[0],"Racc_Runtime_Revision",["originalRevision:","1.8"]["$[]"](1)),Opal.const_set($nesting[0],"Racc_Runtime_Core_Version_R","1.4.6"),Opal.const_set($nesting[0],"Racc_Runtime_Core_Revision_R",["originalRevision:","1.8"]["$[]"](1)),Opal.const_set($nesting[0],"Racc_Main_Parsing_Routine","_racc_do_parse_rb"),Opal.const_set($nesting[0],"Racc_YY_Parse_Method","_racc_yyparse_rb"),Opal.const_set($nesting[0],"Racc_Runtime_Core_Version",$$($nesting,"Racc_Runtime_Core_Version_R")),Opal.const_set($nesting[0],"Racc_Runtime_Core_Revision",$$($nesting,"Racc_Runtime_Core_Revision_R")),Opal.const_set($nesting[0],"Racc_Runtime_Type","ruby"),Opal.defs($$($nesting,"Parser"),"$racc_runtime_type",$Parser_racc_token2str$30=function(){return $$($nesting,"Racc_Runtime_Type")},$Parser_racc_token2str$30.$$arity=0),Opal.def($Parser_token_to_str$31,"$_racc_setup",$Parser_racc_token2str$30=function(){var $b,$writer,self=this,$ret_or_1=nil,arg=nil;return null==$gvars.stderr&&($gvars.stderr=nil),$truthy($$$(self.$class(),"Racc_debug_parser"))||(self.yydebug=!1),$truthy(null!=($b=self.yydebug)&&$b!==nil?"instance-variable":nil)||(self.yydebug=!1),$truthy(self.yydebug)&&($truthy(null!=($b=self.racc_debug_out)&&$b!==nil?"instance-variable":nil)||(self.racc_debug_out=$gvars.stderr),self.racc_debug_out=$truthy($ret_or_1=self.racc_debug_out)?$ret_or_1:$gvars.stderr),arg=$$$(self.$class(),"Racc_arg"),$truthy($rb_lt(arg.$size(),14))&&($writer=[13,!0],$send(arg,"[]=",Opal.to_a($writer)),$rb_minus($writer.length,1)),arg},$Parser_racc_token2str$30.$$arity=0),Opal.def($Parser_token_to_str$31,"$_racc_init_sysvars",$Parser_racc_token2str$30=function(){return this.racc_state=[0],this.racc_tstack=[],this.racc_vstack=[],this.racc_t=nil,this.racc_val=nil,this.racc_read_next=!0,this.racc_user_yyerror=!1,this.racc_error_status=0},$Parser_racc_token2str$30.$$arity=0),Opal.def($Parser_token_to_str$31,"$do_parse",$Parser_racc_token2str$30=function(){return this.$__send__($$($nesting,"Racc_Main_Parsing_Routine"),this.$_racc_setup(),!1)},$Parser_racc_token2str$30.$$arity=0),Opal.def($Parser_token_to_str$31,"$next_token",$Parser_racc_token2str$30=function(){return this.$raise($$($nesting,"NotImplementedError"),this.$class()+"#next_token is not defined")},$Parser_racc_token2str$30.$$arity=0),Opal.def($Parser_token_to_str$31,"$_racc_do_parse_rb",$Parser_racc_token2str$30=function(arg){var $$7,tok,action_table=nil,action_check=nil,action_default=nil,action_pointer=nil,token_table=nil,act=nil,i=nil,$a=arg,$a=Opal.to_ary($a),action_table=null==$a[0]?nil:$a[0],action_check=null==$a[1]?nil:$a[1],action_default=null==$a[2]?nil:$a[2],action_pointer=null==$a[3]?nil:$a[3];null==$a[4]||$a[4];return null==$a[5]||$a[5],null==$a[6]||$a[6],null==$a[7]||$a[7],null==$a[8]||$a[8],null==$a[9]||$a[9],token_table=null==$a[10]?nil:$a[10],null==$a[11]||$a[11],null==$a[12]||$a[12],null==$a[13]||$a[13],this.$_racc_init_sysvars(),act=i=nil,$send(this,"catch",["racc_end_parse"],(($$7=function(){var $d,self=null==$$7.$$s?this:$$7.$$s,$ret_or_2=nil,$ret_or_3=nil,$ret_or_4=nil;for(null==self.racc_state&&(self.racc_state=nil),null==self.racc_read_next&&(self.racc_read_next=nil),null==self.racc_t&&(self.racc_t=nil),null==self.yydebug&&(self.yydebug=nil),null==self.racc_val&&(self.racc_val=nil);$truthy(!0);)for($truthy(i=action_pointer["$[]"](self.racc_state["$[]"](-1)))?($truthy(self.racc_read_next)&&$truthy(self.racc_t["$!="](0))&&($d=self.$next_token(),$d=Opal.to_ary($d),tok=null==$d[0]?nil:$d[0],self.racc_val=null==$d[1]?nil:$d[1],$truthy(tok)?self.racc_t=$truthy($ret_or_2=token_table["$[]"](tok))?$ret_or_2:1:self.racc_t=0,$truthy(self.yydebug)&&self.$racc_read_token(self.racc_t,tok,self.racc_val),self.racc_read_next=!1),i=$rb_plus(i,self.racc_t),$truthy($truthy($ret_or_3=$truthy($ret_or_4=$rb_ge(i,0))?act=action_table["$[]"](i):$ret_or_4)?action_check["$[]"](i)["$=="](self.racc_state["$[]"](-1)):$ret_or_3)||(act=action_default["$[]"](self.racc_state["$[]"](-1)))):act=action_default["$[]"](self.racc_state["$[]"](-1));$truthy(act=self.$_racc_evalact(act,arg)););}).$$s=this,$$7.$$arity=0,$$7))},$Parser_racc_token2str$30.$$arity=2),Opal.def($Parser_token_to_str$31,"$yyparse",$Parser_racc_token2str$30=function(recv,mid){return this.$__send__($$($nesting,"Racc_YY_Parse_Method"),recv,mid,this.$_racc_setup(),!0)},$Parser_racc_token2str$30.$$arity=2),Opal.def($Parser_token_to_str$31,"$_racc_yyparse_rb",$Parser_racc_token2str$30=function(recv,mid,arg){var $$10,action_table=nil,action_check=nil,action_default=nil,action_pointer=nil,token_table=nil,act=nil,i=nil,$a=arg,$a=Opal.to_ary($a),action_table=null==$a[0]?nil:$a[0],action_check=null==$a[1]?nil:$a[1],action_default=null==$a[2]?nil:$a[2],action_pointer=null==$a[3]?nil:$a[3];null==$a[4]||$a[4];return null==$a[5]||$a[5],null==$a[6]||$a[6],null==$a[7]||$a[7],null==$a[8]||$a[8],null==$a[9]||$a[9],token_table=null==$a[10]?nil:$a[10],null==$a[11]||$a[11],null==$a[12]||$a[12],null==$a[13]||$a[13],this.$_racc_init_sysvars(),i=act=nil,$send(this,"catch",["racc_end_parse"],(($$10=function(){var $$11,self=null==$$10.$$s?this:$$10.$$s;for(null==self.racc_state&&(self.racc_state=nil);!$truthy(i=action_pointer["$[]"](self.racc_state["$[]"](-1)));)for(;$truthy(act=self.$_racc_evalact(action_default["$[]"](self.racc_state["$[]"](-1)),arg)););return $send(recv,"__send__",[mid],(($$11=function(tok,val){var self=null==$$11.$$s?this:$$11.$$s,$ret_or_5=nil,$ret_or_6=nil,$ret_or_7=nil,$ret_or_8=nil,$ret_or_9=nil,$ret_or_10=nil,$ret_or_11=nil,$ret_or_12=nil,$ret_or_13=nil;for(null==self.racc_t&&(self.racc_t=nil),null==self.racc_state&&(self.racc_state=nil),null==self.racc_read_next&&(self.racc_read_next=nil),null==tok&&(tok=nil),null==val&&(val=nil),$truthy(tok)?self.racc_t=$truthy($ret_or_5=token_table["$[]"](tok))?$ret_or_5:1:self.racc_t=0,self.racc_val=val,self.racc_read_next=!1,i=$rb_plus(i,self.racc_t),$truthy($truthy($ret_or_6=$truthy($ret_or_7=$rb_ge(i,0))?act=action_table["$[]"](i):$ret_or_7)?action_check["$[]"](i)["$=="](self.racc_state["$[]"](-1)):$ret_or_6)||(act=action_default["$[]"](self.racc_state["$[]"](-1)));$truthy(act=self.$_racc_evalact(act,arg)););for(;$truthy($truthy($ret_or_8=$truthy($ret_or_9=(i=action_pointer["$[]"](self.racc_state["$[]"](-1)))["$!"]())?$ret_or_9:self.racc_read_next["$!"]())?$ret_or_8:self.racc_t["$=="](0));)for($truthy($truthy($ret_or_10=$truthy($ret_or_11=$truthy($ret_or_12=$truthy($ret_or_13=i)?i=$rb_plus(i,self.racc_t):$ret_or_13)?$rb_ge(i,0):$ret_or_12)?act=action_table["$[]"](i):$ret_or_11)?action_check["$[]"](i)["$=="](self.racc_state["$[]"](-1)):$ret_or_10)||(act=action_default["$[]"](self.racc_state["$[]"](-1)));$truthy(act=self.$_racc_evalact(act,arg)););}).$$s=self,$$11.$$arity=2,$$11))}).$$s=this,$$10.$$arity=0,$$10))},$Parser_racc_token2str$30.$$arity=4),Opal.def($Parser_token_to_str$31,"$_racc_evalact",$Parser_racc_token2str$30=function(act,arg){var $$13,shift_n,code,i,lhs,rhs,self=this,action_table=nil,action_check=nil,action_pointer=nil,reduce_n=nil,$ret_or_14=nil,$ret_or_15=nil,$case=nil,$ret_or_16=nil,$ret_or_17=nil,$a=arg,$a=Opal.to_ary($a),action_table=null==$a[0]?nil:$a[0],action_check=null==$a[1]?nil:$a[1],action_pointer=(null==$a[2]||$a[2],null==$a[3]?nil:$a[3]);if(null==$a[4]||$a[4],null==$a[5]||$a[5],null==$a[6]||$a[6],null==$a[7]||$a[7],null==$a[8]||$a[8],null==$a[9]||$a[9],null==$a[10]||$a[10],shift_n=null==$a[11]?nil:$a[11],reduce_n=null==$a[12]?nil:$a[12],null==$a[13]||$a[13],null==$a[14]||$a[14],$truthy($truthy($ret_or_14=$rb_gt(act,0))?$rb_lt(act,shift_n):$ret_or_14))$truthy($rb_gt(self.racc_error_status,0))&&(self.racc_t["$=="](1)||(self.racc_error_status=$rb_minus(self.racc_error_status,1))),self.racc_vstack.$push(self.racc_val),self.racc_state.$push(act),self.racc_read_next=!0,$truthy(self.yydebug)&&(self.racc_tstack.$push(self.racc_t),self.$racc_shift(self.racc_t,self.racc_tstack,self.racc_vstack));else if($truthy($truthy($ret_or_15=$rb_lt(act,0))?$rb_gt(act,reduce_n["$-@"]()):$ret_or_15)){if(code=$send(self,"catch",["racc_jump"],(($$13=function(){var self=null==$$13.$$s?this:$$13.$$s;return null==self.racc_state&&(self.racc_state=nil),self.racc_state.$push(self.$_racc_do_reduce(arg,act)),!1}).$$s=self,$$13.$$arity=0,$$13)),$truthy(code)){if(1["$==="]($case=code))return self.racc_user_yyerror=!0,reduce_n["$-@"]();if(2["$==="]($case))return shift_n;self.$raise("[Racc Bug] unknown jump code")}}else if(act["$=="](shift_n))$truthy(self.yydebug)&&self.$racc_accept(),self.$throw("racc_end_parse",self.racc_vstack["$[]"](0));else{if(act["$=="](reduce_n["$-@"]())){for($case=self.racc_error_status,0["$==="]($case)?$truthy(arg["$[]"](21))||self.$on_error(self.racc_t,self.racc_val,self.racc_vstack):3["$==="]($case)&&(self.racc_t["$=="](0)&&self.$throw("racc_end_parse",nil),self.racc_read_next=!0),self.racc_user_yyerror=!1,self.racc_error_status=3;$truthy(!0)&&(!$truthy(i=action_pointer["$[]"](self.racc_state["$[]"](-1)))||(i=$rb_plus(i,1),!$truthy($truthy($ret_or_16=$truthy($ret_or_17=$rb_ge(i,0))?act=action_table["$[]"](i):$ret_or_17)?action_check["$[]"](i)["$=="](self.racc_state["$[]"](-1)):$ret_or_16)));)$truthy((lhs=self.racc_state.$size(),rhs=1,"number"==typeof lhs&&"number"==typeof rhs?lhs<=rhs:lhs["$<="](rhs)))&&self.$throw("racc_end_parse",nil),self.racc_state.$pop(),self.racc_vstack.$pop(),$truthy(self.yydebug)&&(self.racc_tstack.$pop(),self.$racc_e_pop(self.racc_state,self.racc_tstack,self.racc_vstack));return act}self.$raise("[Racc Bug] unknown action "+act.$inspect())}return $truthy(self.yydebug)&&self.$racc_next_state(self.racc_state["$[]"](-1),self.racc_state),nil},$Parser_racc_token2str$30.$$arity=2),Opal.def($Parser_token_to_str$31,"$_racc_do_reduce",$Parser_racc_token2str$30=function(rhs,lhs){var nt_base,use_result,reduce_to,method_id,void_array,k1,goto_table=nil,goto_check=nil,goto_default=nil,goto_pointer=nil,reduce_table=nil,state=nil,vstack=nil,tstack=nil,i=nil,len=nil,tmp_t=nil,tmp_v=nil,$writer=nil,$ret_or_18=nil,$ret_or_19=nil,curstate=nil,rhs=rhs,rhs=Opal.to_ary(rhs);null==rhs[0]||rhs[0];return null==rhs[1]||rhs[1],null==rhs[2]||rhs[2],null==rhs[3]||rhs[3],goto_table=null==rhs[4]?nil:rhs[4],goto_check=null==rhs[5]?nil:rhs[5],goto_default=null==rhs[6]?nil:rhs[6],goto_pointer=null==rhs[7]?nil:rhs[7],nt_base=null==rhs[8]?nil:rhs[8],reduce_table=null==rhs[9]?nil:rhs[9],null==rhs[10]||rhs[10],null==rhs[11]||rhs[11],null==rhs[12]||rhs[12],use_result=null==rhs[13]?nil:rhs[13],state=this.racc_state,vstack=this.racc_vstack,tstack=this.racc_tstack,rhs=-3,i="number"==typeof(lhs=lhs)&&"number"==typeof rhs?lhs*rhs:lhs["$*"](rhs),len=reduce_table["$[]"](i),reduce_to=reduce_table["$[]"]($rb_plus(i,1)),method_id=reduce_table["$[]"]($rb_plus(i,2)),void_array=[],$truthy(this.yydebug)&&(tmp_t=tstack["$[]"](len["$-@"](),len)),tmp_v=vstack["$[]"](len["$-@"](),len),$truthy(this.yydebug)&&($writer=[len["$-@"](),len,void_array],$send(tstack,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]),$writer=[len["$-@"](),len,void_array],$send(vstack,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)],$writer=[len["$-@"](),len,void_array],$send(state,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)],$truthy(use_result)?vstack.$push(this.$__send__(method_id,tmp_v,vstack,tmp_v["$[]"](0))):vstack.$push(this.$__send__(method_id,tmp_v,vstack)),tstack.$push(reduce_to),$truthy(this.yydebug)&&this.$racc_reduce(tmp_t,reduce_to,tstack,vstack),k1=$rb_minus(reduce_to,nt_base),$truthy(i=goto_pointer["$[]"](k1))&&(i=$rb_plus(i,state["$[]"](-1)),$truthy($truthy($ret_or_18=$truthy($ret_or_19=$rb_ge(i,0))?curstate=goto_table["$[]"](i):$ret_or_19)?goto_check["$[]"](i)["$=="](k1):$ret_or_18))?curstate:goto_default["$[]"](k1)},$Parser_racc_token2str$30.$$arity=2),Opal.def($Parser_token_to_str$31,"$on_error",$Parser_racc_token2str$30=function(t,val){var self=this,$ret_or_20=nil;return self.$raise($$($nesting,"ParseError"),self.$sprintf("\nparse error on value %s (%s)",val.$inspect(),$truthy($ret_or_20=self.$token_to_str(t))?$ret_or_20:"?"))},$Parser_racc_token2str$30.$$arity=3),Opal.def($Parser_token_to_str$31,"$yyerror",$Parser_racc_token2str$30=function(){return this.$throw("racc_jump",1)},$Parser_racc_token2str$30.$$arity=0),Opal.def($Parser_token_to_str$31,"$yyaccept",$Parser_racc_token2str$30=function(){return this.$throw("racc_jump",2)},$Parser_racc_token2str$30.$$arity=0),Opal.def($Parser_token_to_str$31,"$yyerrok",$Parser_racc_token2str$30=function(){return this.racc_error_status=0},$Parser_racc_token2str$30.$$arity=0),Opal.def($Parser_token_to_str$31,"$racc_read_token",$Parser_racc_token2str$30=function(t,tok,val){return this.racc_debug_out.$print("read    "),this.racc_debug_out.$print(tok.$inspect(),"(",this.$racc_token2str(t),") "),this.racc_debug_out.$puts(val.$inspect()),this.racc_debug_out.$puts()},$Parser_racc_token2str$30.$$arity=3),Opal.def($Parser_token_to_str$31,"$racc_shift",$Parser_racc_token2str$30=function(tok,tstack,vstack){return this.racc_debug_out.$puts("shift   "+this.$racc_token2str(tok)),this.$racc_print_stacks(tstack,vstack),this.racc_debug_out.$puts()},$Parser_racc_token2str$30.$$arity=3),Opal.def($Parser_token_to_str$31,"$racc_reduce",$Parser_racc_token2str$30=function(toks,sim,tstack,vstack){var $$22,out=nil;return(out=this.racc_debug_out).$print("reduce "),$truthy(toks["$empty?"]())?out.$print(" <none>"):$send(toks,"each",[],(($$22=function(t){var self=null==$$22.$$s?this:$$22.$$s;return null==t&&(t=nil),out.$print(" ",self.$racc_token2str(t))}).$$s=this,$$22.$$arity=1,$$22)),out.$puts(" --\x3e "+this.$racc_token2str(sim)),this.$racc_print_stacks(tstack,vstack),this.racc_debug_out.$puts()},$Parser_racc_token2str$30.$$arity=4),Opal.def($Parser_token_to_str$31,"$racc_accept",$Parser_racc_token2str$30=function(){return this.racc_debug_out.$puts("accept"),this.racc_debug_out.$puts()},$Parser_racc_token2str$30.$$arity=0),Opal.def($Parser_token_to_str$31,"$racc_e_pop",$Parser_racc_token2str$30=function(state,tstack,vstack){return this.racc_debug_out.$puts("error recovering mode: pop token"),this.$racc_print_states(state),this.$racc_print_stacks(tstack,vstack),this.racc_debug_out.$puts()},$Parser_racc_token2str$30.$$arity=3),Opal.def($Parser_token_to_str$31,"$racc_next_state",$Parser_racc_token2str$30=function(curstate,state){return this.racc_debug_out.$puts("goto    "+curstate),this.$racc_print_states(state),this.racc_debug_out.$puts()},$Parser_racc_token2str$30.$$arity=2),Opal.def($Parser_token_to_str$31,"$racc_print_stacks",$Parser_racc_token2str$30=function(t,v){var $$27,out=nil;return(out=this.racc_debug_out).$print("        ["),$send(t,"each_index",[],(($$27=function(i){var self=null==$$27.$$s?this:$$27.$$s;return null==i&&(i=nil),out.$print(" (",self.$racc_token2str(t["$[]"](i))," ",v["$[]"](i).$inspect(),")")}).$$s=this,$$27.$$arity=1,$$27)),out.$puts(" ]")},$Parser_racc_token2str$30.$$arity=2),Opal.def($Parser_token_to_str$31,"$racc_print_states",$Parser_racc_token2str$30=function(s){var $$29,out=nil;return(out=this.racc_debug_out).$print("        ["),$send(s,"each",[],(($$29=function(st){null==$$29.$$s||$$29.$$s;return null==st&&(st=nil),out.$print(" ",st)}).$$s=this,$$29.$$arity=1,$$29)),out.$puts(" ]")},$Parser_racc_token2str$30.$$arity=1),Opal.def($Parser_token_to_str$31,"$racc_token2str",$Parser_racc_token2str$30=function(tok){var $ret_or_21;return $truthy($ret_or_21=$$$(this.$class(),"Racc_token_to_s_table")["$[]"](tok))?$ret_or_21:this.$raise("[Racc Bug] can't convert token "+tok+" to string")},$Parser_racc_token2str$30.$$arity=1),Opal.def($Parser_token_to_str$31,"$token_to_str",$Parser_token_to_str$31=function(t){return $$$(this.$class(),"Racc_token_to_s_table")["$[]"](t)},$Parser_token_to_str$31.$$arity=1),nil&&"token_to_str"}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/version"]=function(Opal){Opal.top;var $nesting=[],$module=(Opal.nil,Opal.$$$,Opal.$$,Opal.module);return function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return Opal.const_set($nesting[0],"VERSION","3.1.1.0")}($nesting[0],$nesting)},Opal.modules["racc/parser"]=function(Opal){function $rb_lt(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs<rhs:lhs["$<"](rhs)}function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}function $rb_ge(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?rhs<=lhs:lhs["$>="](rhs)}function $rb_gt(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?rhs<lhs:lhs["$>"](rhs)}Opal.top;var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$gvars=Opal.gvars,$send=Opal.send;return Opal.add_stubs(["$[]","$class","$<","$size","$[]=","$-","$__send__","$_racc_setup","$raise","$_racc_init_sysvars","$catch","$!=","$next_token","$racc_read_token","$+","$>=","$==","$_racc_evalact","$!","$>","$push","$racc_shift","$-@","$_racc_do_reduce","$===","$racc_accept","$throw","$on_error","$<=","$pop","$racc_e_pop","$inspect","$racc_next_state","$*","$racc_reduce","$sprintf","$token_to_str","$print","$racc_token2str","$puts","$racc_print_stacks","$empty?","$each","$racc_print_states","$each_index"]),function($base,$nesting){!function($base,$super,$parent_nesting){[$klass($base,$super,"ParseError")].concat($parent_nesting)}(($nesting=[$module($base,"Racc")].concat($nesting))[0],$$($nesting,"StandardError"),$nesting)}($nesting[0],$nesting),$truthy($$$("::","ParseError","skip_raise")?"constant":nil)||Opal.const_set($nesting[0],"ParseError",$$$($$($nesting,"Racc"),"ParseError")),function($base,$nesting){$nesting=[$module($base,"Racc")].concat($nesting);return $truthy($$($nesting,"Racc_No_Extensions","skip_raise")?"constant":nil)||Opal.const_set($nesting[0],"Racc_No_Extensions",!1),function($Parser_token_to_str$31,$Parser_racc_token2str$30){var $Parser_token_to_str$31=$klass($Parser_token_to_str$31,null,"Parser"),$nesting=[$Parser_token_to_str$31].concat($Parser_racc_token2str$30);return $Parser_token_to_str$31.$$prototype.yydebug=$Parser_token_to_str$31.$$prototype.racc_debug_out=$Parser_token_to_str$31.$$prototype.racc_error_status=$Parser_token_to_str$31.$$prototype.racc_t=$Parser_token_to_str$31.$$prototype.racc_vstack=$Parser_token_to_str$31.$$prototype.racc_val=$Parser_token_to_str$31.$$prototype.racc_state=$Parser_token_to_str$31.$$prototype.racc_tstack=nil,Opal.const_set($nesting[0],"Racc_Runtime_Version","1.4.6"),Opal.const_set($nesting[0],"Racc_Runtime_Revision",["originalRevision:","1.8"]["$[]"](1)),Opal.const_set($nesting[0],"Racc_Runtime_Core_Version_R","1.4.6"),Opal.const_set($nesting[0],"Racc_Runtime_Core_Revision_R",["originalRevision:","1.8"]["$[]"](1)),Opal.const_set($nesting[0],"Racc_Main_Parsing_Routine","_racc_do_parse_rb"),Opal.const_set($nesting[0],"Racc_YY_Parse_Method","_racc_yyparse_rb"),Opal.const_set($nesting[0],"Racc_Runtime_Core_Version",$$($nesting,"Racc_Runtime_Core_Version_R")),Opal.const_set($nesting[0],"Racc_Runtime_Core_Revision",$$($nesting,"Racc_Runtime_Core_Revision_R")),Opal.const_set($nesting[0],"Racc_Runtime_Type","ruby"),Opal.defs($$($nesting,"Parser"),"$racc_runtime_type",$Parser_racc_token2str$30=function(){return $$($nesting,"Racc_Runtime_Type")},$Parser_racc_token2str$30.$$arity=0),Opal.def($Parser_token_to_str$31,"$_racc_setup",$Parser_racc_token2str$30=function(){var $b,$writer,self=this,$ret_or_1=nil,arg=nil;return null==$gvars.stderr&&($gvars.stderr=nil),$truthy($$$(self.$class(),"Racc_debug_parser"))||(self.yydebug=!1),$truthy(null!=($b=self.yydebug)&&$b!==nil?"instance-variable":nil)||(self.yydebug=!1),$truthy(self.yydebug)&&($truthy(null!=($b=self.racc_debug_out)&&$b!==nil?"instance-variable":nil)||(self.racc_debug_out=$gvars.stderr),self.racc_debug_out=$truthy($ret_or_1=self.racc_debug_out)?$ret_or_1:$gvars.stderr),arg=$$$(self.$class(),"Racc_arg"),$truthy($rb_lt(arg.$size(),14))&&($writer=[13,!0],$send(arg,"[]=",Opal.to_a($writer)),$rb_minus($writer.length,1)),arg},$Parser_racc_token2str$30.$$arity=0),Opal.def($Parser_token_to_str$31,"$_racc_init_sysvars",$Parser_racc_token2str$30=function(){return this.racc_state=[0],this.racc_tstack=[],this.racc_vstack=[],this.racc_t=nil,this.racc_val=nil,this.racc_read_next=!0,this.racc_user_yyerror=!1,this.racc_error_status=0},$Parser_racc_token2str$30.$$arity=0),Opal.def($Parser_token_to_str$31,"$do_parse",$Parser_racc_token2str$30=function(){return this.$__send__($$($nesting,"Racc_Main_Parsing_Routine"),this.$_racc_setup(),!1)},$Parser_racc_token2str$30.$$arity=0),Opal.def($Parser_token_to_str$31,"$next_token",$Parser_racc_token2str$30=function(){return this.$raise($$($nesting,"NotImplementedError"),this.$class()+"#next_token is not defined")},$Parser_racc_token2str$30.$$arity=0),Opal.def($Parser_token_to_str$31,"$_racc_do_parse_rb",$Parser_racc_token2str$30=function(arg){var $$7,tok,action_table=nil,action_check=nil,action_default=nil,action_pointer=nil,token_table=nil,act=nil,i=nil,$a=arg,$a=Opal.to_ary($a),action_table=null==$a[0]?nil:$a[0],action_check=null==$a[1]?nil:$a[1],action_default=null==$a[2]?nil:$a[2],action_pointer=null==$a[3]?nil:$a[3];null==$a[4]||$a[4];return null==$a[5]||$a[5],null==$a[6]||$a[6],null==$a[7]||$a[7],null==$a[8]||$a[8],null==$a[9]||$a[9],token_table=null==$a[10]?nil:$a[10],null==$a[11]||$a[11],null==$a[12]||$a[12],null==$a[13]||$a[13],this.$_racc_init_sysvars(),act=i=nil,$send(this,"catch",["racc_end_parse"],(($$7=function(){var $d,self=null==$$7.$$s?this:$$7.$$s,$ret_or_2=nil,$ret_or_3=nil,$ret_or_4=nil;for(null==self.racc_state&&(self.racc_state=nil),null==self.racc_read_next&&(self.racc_read_next=nil),null==self.racc_t&&(self.racc_t=nil),null==self.yydebug&&(self.yydebug=nil),null==self.racc_val&&(self.racc_val=nil);$truthy(!0);)for($truthy(i=action_pointer["$[]"](self.racc_state["$[]"](-1)))?($truthy(self.racc_read_next)&&$truthy(self.racc_t["$!="](0))&&($d=self.$next_token(),$d=Opal.to_ary($d),tok=null==$d[0]?nil:$d[0],self.racc_val=null==$d[1]?nil:$d[1],$truthy(tok)?self.racc_t=$truthy($ret_or_2=token_table["$[]"](tok))?$ret_or_2:1:self.racc_t=0,$truthy(self.yydebug)&&self.$racc_read_token(self.racc_t,tok,self.racc_val),self.racc_read_next=!1),i=$rb_plus(i,self.racc_t),$truthy($truthy($ret_or_3=$truthy($ret_or_4=$rb_ge(i,0))?act=action_table["$[]"](i):$ret_or_4)?action_check["$[]"](i)["$=="](self.racc_state["$[]"](-1)):$ret_or_3)||(act=action_default["$[]"](self.racc_state["$[]"](-1)))):act=action_default["$[]"](self.racc_state["$[]"](-1));$truthy(act=self.$_racc_evalact(act,arg)););}).$$s=this,$$7.$$arity=0,$$7))},$Parser_racc_token2str$30.$$arity=2),Opal.def($Parser_token_to_str$31,"$yyparse",$Parser_racc_token2str$30=function(recv,mid){return this.$__send__($$($nesting,"Racc_YY_Parse_Method"),recv,mid,this.$_racc_setup(),!0)},$Parser_racc_token2str$30.$$arity=2),Opal.def($Parser_token_to_str$31,"$_racc_yyparse_rb",$Parser_racc_token2str$30=function(recv,mid,arg){var $$10,action_table=nil,action_check=nil,action_default=nil,action_pointer=nil,token_table=nil,act=nil,i=nil,$a=arg,$a=Opal.to_ary($a),action_table=null==$a[0]?nil:$a[0],action_check=null==$a[1]?nil:$a[1],action_default=null==$a[2]?nil:$a[2],action_pointer=null==$a[3]?nil:$a[3];null==$a[4]||$a[4];return null==$a[5]||$a[5],null==$a[6]||$a[6],null==$a[7]||$a[7],null==$a[8]||$a[8],null==$a[9]||$a[9],token_table=null==$a[10]?nil:$a[10],null==$a[11]||$a[11],null==$a[12]||$a[12],null==$a[13]||$a[13],this.$_racc_init_sysvars(),i=act=nil,$send(this,"catch",["racc_end_parse"],(($$10=function(){var $$11,self=null==$$10.$$s?this:$$10.$$s;for(null==self.racc_state&&(self.racc_state=nil);!$truthy(i=action_pointer["$[]"](self.racc_state["$[]"](-1)));)for(;$truthy(act=self.$_racc_evalact(action_default["$[]"](self.racc_state["$[]"](-1)),arg)););return $send(recv,"__send__",[mid],(($$11=function(tok,val){var self=null==$$11.$$s?this:$$11.$$s,$ret_or_5=nil,$ret_or_6=nil,$ret_or_7=nil,$ret_or_8=nil,$ret_or_9=nil,$ret_or_10=nil,$ret_or_11=nil,$ret_or_12=nil,$ret_or_13=nil;for(null==self.racc_t&&(self.racc_t=nil),null==self.racc_state&&(self.racc_state=nil),null==self.racc_read_next&&(self.racc_read_next=nil),null==tok&&(tok=nil),null==val&&(val=nil),$truthy(tok)?self.racc_t=$truthy($ret_or_5=token_table["$[]"](tok))?$ret_or_5:1:self.racc_t=0,self.racc_val=val,self.racc_read_next=!1,i=$rb_plus(i,self.racc_t),$truthy($truthy($ret_or_6=$truthy($ret_or_7=$rb_ge(i,0))?act=action_table["$[]"](i):$ret_or_7)?action_check["$[]"](i)["$=="](self.racc_state["$[]"](-1)):$ret_or_6)||(act=action_default["$[]"](self.racc_state["$[]"](-1)));$truthy(act=self.$_racc_evalact(act,arg)););for(;$truthy($truthy($ret_or_8=$truthy($ret_or_9=(i=action_pointer["$[]"](self.racc_state["$[]"](-1)))["$!"]())?$ret_or_9:self.racc_read_next["$!"]())?$ret_or_8:self.racc_t["$=="](0));)for($truthy($truthy($ret_or_10=$truthy($ret_or_11=$truthy($ret_or_12=$truthy($ret_or_13=i)?i=$rb_plus(i,self.racc_t):$ret_or_13)?$rb_ge(i,0):$ret_or_12)?act=action_table["$[]"](i):$ret_or_11)?action_check["$[]"](i)["$=="](self.racc_state["$[]"](-1)):$ret_or_10)||(act=action_default["$[]"](self.racc_state["$[]"](-1)));$truthy(act=self.$_racc_evalact(act,arg)););}).$$s=self,$$11.$$arity=2,$$11))}).$$s=this,$$10.$$arity=0,$$10))},$Parser_racc_token2str$30.$$arity=4),Opal.def($Parser_token_to_str$31,"$_racc_evalact",$Parser_racc_token2str$30=function(act,arg){var $$13,shift_n,code,i,lhs,rhs,self=this,action_table=nil,action_check=nil,action_pointer=nil,reduce_n=nil,$ret_or_14=nil,$ret_or_15=nil,$case=nil,$ret_or_16=nil,$ret_or_17=nil,$a=arg,$a=Opal.to_ary($a),action_table=null==$a[0]?nil:$a[0],action_check=null==$a[1]?nil:$a[1],action_pointer=(null==$a[2]||$a[2],null==$a[3]?nil:$a[3]);if(null==$a[4]||$a[4],null==$a[5]||$a[5],null==$a[6]||$a[6],null==$a[7]||$a[7],null==$a[8]||$a[8],null==$a[9]||$a[9],null==$a[10]||$a[10],shift_n=null==$a[11]?nil:$a[11],reduce_n=null==$a[12]?nil:$a[12],null==$a[13]||$a[13],null==$a[14]||$a[14],$truthy($truthy($ret_or_14=$rb_gt(act,0))?$rb_lt(act,shift_n):$ret_or_14))$truthy($rb_gt(self.racc_error_status,0))&&(self.racc_t["$=="](1)||(self.racc_error_status=$rb_minus(self.racc_error_status,1))),self.racc_vstack.$push(self.racc_val),self.racc_state.$push(act),self.racc_read_next=!0,$truthy(self.yydebug)&&(self.racc_tstack.$push(self.racc_t),self.$racc_shift(self.racc_t,self.racc_tstack,self.racc_vstack));else if($truthy($truthy($ret_or_15=$rb_lt(act,0))?$rb_gt(act,reduce_n["$-@"]()):$ret_or_15)){if(code=$send(self,"catch",["racc_jump"],(($$13=function(){var self=null==$$13.$$s?this:$$13.$$s;return null==self.racc_state&&(self.racc_state=nil),self.racc_state.$push(self.$_racc_do_reduce(arg,act)),!1}).$$s=self,$$13.$$arity=0,$$13)),$truthy(code)){if(1["$==="]($case=code))return self.racc_user_yyerror=!0,reduce_n["$-@"]();if(2["$==="]($case))return shift_n;self.$raise("[Racc Bug] unknown jump code")}}else if(act["$=="](shift_n))$truthy(self.yydebug)&&self.$racc_accept(),self.$throw("racc_end_parse",self.racc_vstack["$[]"](0));else{if(act["$=="](reduce_n["$-@"]())){for($case=self.racc_error_status,0["$==="]($case)?$truthy(arg["$[]"](21))||self.$on_error(self.racc_t,self.racc_val,self.racc_vstack):3["$==="]($case)&&(self.racc_t["$=="](0)&&self.$throw("racc_end_parse",nil),self.racc_read_next=!0),self.racc_user_yyerror=!1,self.racc_error_status=3;$truthy(!0)&&(!$truthy(i=action_pointer["$[]"](self.racc_state["$[]"](-1)))||(i=$rb_plus(i,1),!$truthy($truthy($ret_or_16=$truthy($ret_or_17=$rb_ge(i,0))?act=action_table["$[]"](i):$ret_or_17)?action_check["$[]"](i)["$=="](self.racc_state["$[]"](-1)):$ret_or_16)));)$truthy((lhs=self.racc_state.$size(),rhs=1,"number"==typeof lhs&&"number"==typeof rhs?lhs<=rhs:lhs["$<="](rhs)))&&self.$throw("racc_end_parse",nil),self.racc_state.$pop(),self.racc_vstack.$pop(),$truthy(self.yydebug)&&(self.racc_tstack.$pop(),self.$racc_e_pop(self.racc_state,self.racc_tstack,self.racc_vstack));return act}self.$raise("[Racc Bug] unknown action "+act.$inspect())}return $truthy(self.yydebug)&&self.$racc_next_state(self.racc_state["$[]"](-1),self.racc_state),nil},$Parser_racc_token2str$30.$$arity=2),Opal.def($Parser_token_to_str$31,"$_racc_do_reduce",$Parser_racc_token2str$30=function(rhs,lhs){var nt_base,use_result,reduce_to,method_id,void_array,k1,goto_table=nil,goto_check=nil,goto_default=nil,goto_pointer=nil,reduce_table=nil,state=nil,vstack=nil,tstack=nil,i=nil,len=nil,tmp_t=nil,tmp_v=nil,$writer=nil,$ret_or_18=nil,$ret_or_19=nil,curstate=nil,rhs=rhs,rhs=Opal.to_ary(rhs);null==rhs[0]||rhs[0];return null==rhs[1]||rhs[1],null==rhs[2]||rhs[2],null==rhs[3]||rhs[3],goto_table=null==rhs[4]?nil:rhs[4],goto_check=null==rhs[5]?nil:rhs[5],goto_default=null==rhs[6]?nil:rhs[6],goto_pointer=null==rhs[7]?nil:rhs[7],nt_base=null==rhs[8]?nil:rhs[8],reduce_table=null==rhs[9]?nil:rhs[9],null==rhs[10]||rhs[10],null==rhs[11]||rhs[11],null==rhs[12]||rhs[12],use_result=null==rhs[13]?nil:rhs[13],state=this.racc_state,vstack=this.racc_vstack,tstack=this.racc_tstack,rhs=-3,i="number"==typeof(lhs=lhs)&&"number"==typeof rhs?lhs*rhs:lhs["$*"](rhs),len=reduce_table["$[]"](i),reduce_to=reduce_table["$[]"]($rb_plus(i,1)),method_id=reduce_table["$[]"]($rb_plus(i,2)),void_array=[],$truthy(this.yydebug)&&(tmp_t=tstack["$[]"](len["$-@"](),len)),tmp_v=vstack["$[]"](len["$-@"](),len),$truthy(this.yydebug)&&($writer=[len["$-@"](),len,void_array],$send(tstack,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]),$writer=[len["$-@"](),len,void_array],$send(vstack,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)],$writer=[len["$-@"](),len,void_array],$send(state,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)],$truthy(use_result)?vstack.$push(this.$__send__(method_id,tmp_v,vstack,tmp_v["$[]"](0))):vstack.$push(this.$__send__(method_id,tmp_v,vstack)),tstack.$push(reduce_to),$truthy(this.yydebug)&&this.$racc_reduce(tmp_t,reduce_to,tstack,vstack),k1=$rb_minus(reduce_to,nt_base),$truthy(i=goto_pointer["$[]"](k1))&&(i=$rb_plus(i,state["$[]"](-1)),$truthy($truthy($ret_or_18=$truthy($ret_or_19=$rb_ge(i,0))?curstate=goto_table["$[]"](i):$ret_or_19)?goto_check["$[]"](i)["$=="](k1):$ret_or_18))?curstate:goto_default["$[]"](k1)},$Parser_racc_token2str$30.$$arity=2),Opal.def($Parser_token_to_str$31,"$on_error",$Parser_racc_token2str$30=function(t,val){var self=this,$ret_or_20=nil;return self.$raise($$($nesting,"ParseError"),self.$sprintf("\nparse error on value %s (%s)",val.$inspect(),$truthy($ret_or_20=self.$token_to_str(t))?$ret_or_20:"?"))},$Parser_racc_token2str$30.$$arity=3),Opal.def($Parser_token_to_str$31,"$yyerror",$Parser_racc_token2str$30=function(){return this.$throw("racc_jump",1)},$Parser_racc_token2str$30.$$arity=0),Opal.def($Parser_token_to_str$31,"$yyaccept",$Parser_racc_token2str$30=function(){return this.$throw("racc_jump",2)},$Parser_racc_token2str$30.$$arity=0),Opal.def($Parser_token_to_str$31,"$yyerrok",$Parser_racc_token2str$30=function(){return this.racc_error_status=0},$Parser_racc_token2str$30.$$arity=0),Opal.def($Parser_token_to_str$31,"$racc_read_token",$Parser_racc_token2str$30=function(t,tok,val){return this.racc_debug_out.$print("read    "),this.racc_debug_out.$print(tok.$inspect(),"(",this.$racc_token2str(t),") "),this.racc_debug_out.$puts(val.$inspect()),this.racc_debug_out.$puts()},$Parser_racc_token2str$30.$$arity=3),Opal.def($Parser_token_to_str$31,"$racc_shift",$Parser_racc_token2str$30=function(tok,tstack,vstack){return this.racc_debug_out.$puts("shift   "+this.$racc_token2str(tok)),this.$racc_print_stacks(tstack,vstack),this.racc_debug_out.$puts()},$Parser_racc_token2str$30.$$arity=3),Opal.def($Parser_token_to_str$31,"$racc_reduce",$Parser_racc_token2str$30=function(toks,sim,tstack,vstack){var $$22,out=nil;return(out=this.racc_debug_out).$print("reduce "),$truthy(toks["$empty?"]())?out.$print(" <none>"):$send(toks,"each",[],(($$22=function(t){var self=null==$$22.$$s?this:$$22.$$s;return null==t&&(t=nil),out.$print(" ",self.$racc_token2str(t))}).$$s=this,$$22.$$arity=1,$$22)),out.$puts(" --\x3e "+this.$racc_token2str(sim)),this.$racc_print_stacks(tstack,vstack),this.racc_debug_out.$puts()},$Parser_racc_token2str$30.$$arity=4),Opal.def($Parser_token_to_str$31,"$racc_accept",$Parser_racc_token2str$30=function(){return this.racc_debug_out.$puts("accept"),this.racc_debug_out.$puts()},$Parser_racc_token2str$30.$$arity=0),Opal.def($Parser_token_to_str$31,"$racc_e_pop",$Parser_racc_token2str$30=function(state,tstack,vstack){return this.racc_debug_out.$puts("error recovering mode: pop token"),this.$racc_print_states(state),this.$racc_print_stacks(tstack,vstack),this.racc_debug_out.$puts()},$Parser_racc_token2str$30.$$arity=3),Opal.def($Parser_token_to_str$31,"$racc_next_state",$Parser_racc_token2str$30=function(curstate,state){return this.racc_debug_out.$puts("goto    "+curstate),this.$racc_print_states(state),this.racc_debug_out.$puts()},$Parser_racc_token2str$30.$$arity=2),Opal.def($Parser_token_to_str$31,"$racc_print_stacks",$Parser_racc_token2str$30=function(t,v){var $$27,out=nil;return(out=this.racc_debug_out).$print("        ["),$send(t,"each_index",[],(($$27=function(i){var self=null==$$27.$$s?this:$$27.$$s;return null==i&&(i=nil),out.$print(" (",self.$racc_token2str(t["$[]"](i))," ",v["$[]"](i).$inspect(),")")}).$$s=this,$$27.$$arity=1,$$27)),out.$puts(" ]")},$Parser_racc_token2str$30.$$arity=2),Opal.def($Parser_token_to_str$31,"$racc_print_states",$Parser_racc_token2str$30=function(s){var $$29,out=nil;return(out=this.racc_debug_out).$print("        ["),$send(s,"each",[],(($$29=function(st){null==$$29.$$s||$$29.$$s;return null==st&&(st=nil),out.$print(" ",st)}).$$s=this,$$29.$$arity=1,$$29)),out.$puts(" ]")},$Parser_racc_token2str$30.$$arity=1),Opal.def($Parser_token_to_str$31,"$racc_token2str",$Parser_racc_token2str$30=function(tok){var $ret_or_21;return $truthy($ret_or_21=$$$(this.$class(),"Racc_token_to_s_table")["$[]"](tok))?$ret_or_21:this.$raise("[Racc Bug] can't convert token "+tok+" to string")},$Parser_racc_token2str$30.$$arity=1),Opal.def($Parser_token_to_str$31,"$token_to_str",$Parser_token_to_str$31=function(t){return $$$(this.$class(),"Racc_token_to_s_table")["$[]"](t)},$Parser_token_to_str$31.$$arity=1),nil&&"token_to_str"}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/messages"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$hash2=Opal.hash2,$truthy=Opal.truthy;return Opal.add_stubs(["$freeze","$[]","$===","$empty?","$format"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return Opal.const_set($nesting[0],"MESSAGES",$hash2(["unicode_point_too_large","invalid_escape","incomplete_escape","invalid_hex_escape","invalid_unicode_escape","unterminated_unicode","escape_eof","string_eof","regexp_options","cvar_name","ivar_name","trailing_in_number","empty_numeric","invalid_octal","no_dot_digit_literal","bare_backslash","unexpected","embedded_document","heredoc_id_has_newline","heredoc_id_ends_with_nl","unterminated_heredoc_id","invalid_escape_use","ambiguous_literal","ambiguous_regexp","ambiguous_prefix","triple_dot_at_eol","nth_ref_alias","begin_in_method","backref_assignment","invalid_assignment","module_name_const","unexpected_token","argument_const","argument_ivar","argument_gvar","argument_cvar","duplicate_argument","empty_symbol","odd_hash","singleton_literal","dynamic_const","const_reassignment","module_in_def","class_in_def","unexpected_percent_str","block_and_blockarg","masgn_as_condition","block_given_to_yield","invalid_regexp","invalid_return","csend_in_lhs_of_masgn","cant_assign_to_numparam","reserved_for_numparam","ordinary_param_defined","numparam_used_in_outer_scope","circular_argument_reference","pm_interp_in_var_name","lvar_name","undefined_lvar","duplicate_variable_name","duplicate_pattern_key","endless_setter","invalid_id_to_get","forward_arg_after_restarg","no_anonymous_blockarg","useless_else","duplicate_hash_key","invalid_encoding","invalid_action","clobbered","different_replacements","swallowed_insertions","swallowed_insertions_conflict","crossing_deletions","crossing_deletions_conflict","crossing_insertions","crossing_insertions_conflict"],{unicode_point_too_large:"invalid Unicode codepoint (too large)",invalid_escape:"invalid escape character syntax",incomplete_escape:"incomplete character syntax",invalid_hex_escape:"invalid hex escape",invalid_unicode_escape:"invalid Unicode escape",unterminated_unicode:"unterminated Unicode escape",escape_eof:"escape sequence meets end of file",string_eof:"unterminated string meets end of file",regexp_options:"unknown regexp options: %{options}",cvar_name:"`%{name}' is not allowed as a class variable name",ivar_name:"`%{name}' is not allowed as an instance variable name",trailing_in_number:"trailing `%{character}' in number",empty_numeric:"numeric literal without digits",invalid_octal:"invalid octal digit",no_dot_digit_literal:"no .<digit> floating literal anymore; put 0 before dot",bare_backslash:"bare backslash only allowed before newline",unexpected:"unexpected `%{character}'",embedded_document:"embedded document meets end of file (and they embark on a romantic journey)",heredoc_id_has_newline:"here document identifier across newlines, never match",heredoc_id_ends_with_nl:"here document identifier ends with a newline",unterminated_heredoc_id:"unterminated heredoc id",invalid_escape_use:"invalid character syntax; use ?%{escape}",ambiguous_literal:"ambiguous first argument; put parentheses or a space even after the operator",ambiguous_regexp:"ambiguity between regexp and two divisions: wrap regexp in parentheses or add a space after `/' operator",ambiguous_prefix:"`%{prefix}' interpreted as argument prefix",triple_dot_at_eol:"... at EOL, should be parenthesized",nth_ref_alias:"cannot define an alias for a back-reference variable",begin_in_method:"BEGIN in method",backref_assignment:"cannot assign to a back-reference variable",invalid_assignment:"cannot assign to a keyword",module_name_const:"class or module name must be a constant literal",unexpected_token:"unexpected token %{token}",argument_const:"formal argument cannot be a constant",argument_ivar:"formal argument cannot be an instance variable",argument_gvar:"formal argument cannot be a global variable",argument_cvar:"formal argument cannot be a class variable",duplicate_argument:"duplicate argument name",empty_symbol:"empty symbol literal",odd_hash:"odd number of entries for a hash",singleton_literal:"cannot define a singleton method for a literal",dynamic_const:"dynamic constant assignment",const_reassignment:"constant re-assignment",module_in_def:"module definition in method body",class_in_def:"class definition in method body",unexpected_percent_str:"%{type}: unknown type of percent-literal",block_and_blockarg:"both block argument and literal block are passed",masgn_as_condition:"multiple assignment in conditional context",block_given_to_yield:"block given to yield",invalid_regexp:"%{message}",invalid_return:"Invalid return in class/module body",csend_in_lhs_of_masgn:"&. inside multiple assignment destination",cant_assign_to_numparam:"cannot assign to numbered parameter %{name}",reserved_for_numparam:"%{name} is reserved for numbered parameter",ordinary_param_defined:"ordinary parameter is defined",numparam_used_in_outer_scope:"numbered parameter is already used in an outer scope",circular_argument_reference:"circular argument reference %{var_name}",pm_interp_in_var_name:"symbol literal with interpolation is not allowed",lvar_name:"`%{name}' is not allowed as a local variable name",undefined_lvar:"no such local variable: `%{name}'",duplicate_variable_name:"duplicate variable name %{name}",duplicate_pattern_key:"duplicate hash pattern key %{name}",endless_setter:"setter method cannot be defined in an endless method definition",invalid_id_to_get:"identifier %{identifier} is not valid to get",forward_arg_after_restarg:"... after rest argument",no_anonymous_blockarg:"no anonymous block parameter",useless_else:"else without rescue is useless",duplicate_hash_key:"key is duplicated and overwritten",invalid_encoding:"literal contains escape sequences incompatible with UTF-8",invalid_action:"cannot %{action}",clobbered:"clobbered by: %{action}",different_replacements:"different replacements: %{replacement} vs %{other_replacement}",swallowed_insertions:"this replacement:",swallowed_insertions_conflict:"swallows some inner rewriting actions:",crossing_deletions:"the deletion of:",crossing_deletions_conflict:"is crossing:",crossing_insertions:"the rewriting action on:",crossing_insertions_conflict:"is crossing that on:"}).$freeze()),function($Messages_compile$1,$parent_nesting){var $Messages_compile$1=$module($Messages_compile$1,"Messages"),$nesting=[$Messages_compile$1].concat($parent_nesting);return Opal.defs($Messages_compile$1,"$compile",$Messages_compile$1=function(reason,arguments$){var $ret_or_1=nil,template=$$($nesting,"MESSAGES")["$[]"](reason);return $truthy($truthy($ret_or_1=$$($nesting,"Hash")["$==="](arguments$))?arguments$["$empty?"]():$ret_or_1)?template:this.$format(template,arguments$)},$Messages_compile$1.$$arity=2),nil&&"compile"}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/deprecation"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$module=(Opal.$$,Opal.module),$truthy=Opal.truthy;return Opal.add_stubs(["$attr_writer","$warn"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($Deprecation_warn_of_deprecation$1,$parent_nesting){$Deprecation_warn_of_deprecation$1=$module($Deprecation_warn_of_deprecation$1,"Deprecation"),[$Deprecation_warn_of_deprecation$1].concat($parent_nesting);return $Deprecation_warn_of_deprecation$1.$attr_writer("warned_of_deprecation"),Opal.def($Deprecation_warn_of_deprecation$1,"$warn_of_deprecation",$Deprecation_warn_of_deprecation$1=function(){var self=this,$ret_or_1=nil,$ret_or_2=nil;return null==self.warned_of_deprecation&&(self.warned_of_deprecation=nil),self.warned_of_deprecation=$truthy($ret_or_1=self.warned_of_deprecation)?$ret_or_1:!$truthy($ret_or_2=self.$warn($$$(self,"DEPRECATION_WARNING")))||$ret_or_2},$Deprecation_warn_of_deprecation$1.$$arity=0),nil&&"warn_of_deprecation"}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/ast/processor"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$alias=Opal.alias,$truthy=Opal.truthy,$slice=Opal.slice;return Opal.add_stubs(["$updated","$process_all","$on_var","$!","$nil?","$process","$on_vasgn","$on_argument","$is_a?","$[]","$children","$process_regular_node","$warn"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"AST")].concat($nesting);return function($base,$Processor_on_empty_else$19,$Processor_process_argument_node$18){var $Processor_on_empty_else$19=$klass($base,$Processor_on_empty_else$19,"Processor"),$nesting=[$Processor_on_empty_else$19].concat($Processor_process_argument_node$18);return Opal.def($Processor_on_empty_else$19,"$process_regular_node",$Processor_process_argument_node$18=function(node){return node.$updated(nil,this.$process_all(node))},$Processor_process_argument_node$18.$$arity=1),$alias($Processor_on_empty_else$19,"on_dstr","process_regular_node"),$alias($Processor_on_empty_else$19,"on_dsym","process_regular_node"),$alias($Processor_on_empty_else$19,"on_regexp","process_regular_node"),$alias($Processor_on_empty_else$19,"on_xstr","process_regular_node"),$alias($Processor_on_empty_else$19,"on_splat","process_regular_node"),$alias($Processor_on_empty_else$19,"on_kwsplat","process_regular_node"),$alias($Processor_on_empty_else$19,"on_array","process_regular_node"),$alias($Processor_on_empty_else$19,"on_pair","process_regular_node"),$alias($Processor_on_empty_else$19,"on_hash","process_regular_node"),$alias($Processor_on_empty_else$19,"on_kwargs","process_regular_node"),$alias($Processor_on_empty_else$19,"on_irange","process_regular_node"),$alias($Processor_on_empty_else$19,"on_erange","process_regular_node"),Opal.def($Processor_on_empty_else$19,"$on_var",$Processor_process_argument_node$18=function(node){return node},$Processor_process_argument_node$18.$$arity=1),Opal.def($Processor_on_empty_else$19,"$process_variable_node",$Processor_process_argument_node$18=function(node){return this.$on_var(node)},$Processor_process_argument_node$18.$$arity=1),$alias($Processor_on_empty_else$19,"on_lvar","process_variable_node"),$alias($Processor_on_empty_else$19,"on_ivar","process_variable_node"),$alias($Processor_on_empty_else$19,"on_gvar","process_variable_node"),$alias($Processor_on_empty_else$19,"on_cvar","process_variable_node"),$alias($Processor_on_empty_else$19,"on_back_ref","process_variable_node"),$alias($Processor_on_empty_else$19,"on_nth_ref","process_variable_node"),Opal.def($Processor_on_empty_else$19,"$on_vasgn",$Processor_process_argument_node$18=function(node){var value_node=nil,$a=[].concat(Opal.to_a(node)),name=null==$a[0]?nil:$a[0],value_node=null==$a[1]?nil:$a[1];return $truthy(value_node["$nil?"]()["$!"]())?node.$updated(nil,[name,this.$process(value_node)]):node},$Processor_process_argument_node$18.$$arity=1),Opal.def($Processor_on_empty_else$19,"$process_var_asgn_node",$Processor_process_argument_node$18=function(node){return this.$on_vasgn(node)},$Processor_process_argument_node$18.$$arity=1),$alias($Processor_on_empty_else$19,"on_lvasgn","process_var_asgn_node"),$alias($Processor_on_empty_else$19,"on_ivasgn","process_var_asgn_node"),$alias($Processor_on_empty_else$19,"on_gvasgn","process_var_asgn_node"),$alias($Processor_on_empty_else$19,"on_cvasgn","process_var_asgn_node"),$alias($Processor_on_empty_else$19,"on_and_asgn","process_regular_node"),$alias($Processor_on_empty_else$19,"on_or_asgn","process_regular_node"),Opal.def($Processor_on_empty_else$19,"$on_op_asgn",$Processor_process_argument_node$18=function(node){var $a=[].concat(Opal.to_a(node)),var_node=null==$a[0]?nil:$a[0],method_name=null==$a[1]?nil:$a[1],value_node=null==$a[2]?nil:$a[2];return node.$updated(nil,[this.$process(var_node),method_name,this.$process(value_node)])},$Processor_process_argument_node$18.$$arity=1),$alias($Processor_on_empty_else$19,"on_mlhs","process_regular_node"),$alias($Processor_on_empty_else$19,"on_masgn","process_regular_node"),Opal.def($Processor_on_empty_else$19,"$on_const",$Processor_process_argument_node$18=function(node){var $a=[].concat(Opal.to_a(node)),scope_node=null==$a[0]?nil:$a[0],name=null==$a[1]?nil:$a[1];return node.$updated(nil,[this.$process(scope_node),name])},$Processor_process_argument_node$18.$$arity=1),Opal.def($Processor_on_empty_else$19,"$on_casgn",$Processor_process_argument_node$18=function(node){var value_node=nil,$a=[].concat(Opal.to_a(node)),scope_node=null==$a[0]?nil:$a[0],name=null==$a[1]?nil:$a[1],value_node=null==$a[2]?nil:$a[2];return $truthy(value_node["$nil?"]()["$!"]())?node.$updated(nil,[this.$process(scope_node),name,this.$process(value_node)]):node.$updated(nil,[this.$process(scope_node),name])},$Processor_process_argument_node$18.$$arity=1),$alias($Processor_on_empty_else$19,"on_args","process_regular_node"),Opal.def($Processor_on_empty_else$19,"$on_argument",$Processor_process_argument_node$18=function(node){var value_node=nil,$a=[].concat(Opal.to_a(node)),arg_name=null==$a[0]?nil:$a[0],value_node=null==$a[1]?nil:$a[1];return $truthy(value_node["$nil?"]()["$!"]())?node.$updated(nil,[arg_name,this.$process(value_node)]):node},$Processor_process_argument_node$18.$$arity=1),Opal.def($Processor_on_empty_else$19,"$process_argument_node",$Processor_process_argument_node$18=function(node){return this.$on_argument(node)},$Processor_process_argument_node$18.$$arity=1),$alias($Processor_on_empty_else$19,"on_arg","process_argument_node"),$alias($Processor_on_empty_else$19,"on_optarg","process_argument_node"),$alias($Processor_on_empty_else$19,"on_restarg","process_argument_node"),$alias($Processor_on_empty_else$19,"on_blockarg","process_argument_node"),$alias($Processor_on_empty_else$19,"on_shadowarg","process_argument_node"),$alias($Processor_on_empty_else$19,"on_kwarg","process_argument_node"),$alias($Processor_on_empty_else$19,"on_kwoptarg","process_argument_node"),$alias($Processor_on_empty_else$19,"on_kwrestarg","process_argument_node"),$alias($Processor_on_empty_else$19,"on_forward_arg","process_argument_node"),Opal.def($Processor_on_empty_else$19,"$on_procarg0",$Processor_process_argument_node$18=function(node){return $truthy(node.$children()["$[]"](0)["$is_a?"]($$($nesting,"Symbol")))?this.$on_argument(node):this.$process_regular_node(node)},$Processor_process_argument_node$18.$$arity=1),$alias($Processor_on_empty_else$19,"on_arg_expr","process_regular_node"),$alias($Processor_on_empty_else$19,"on_restarg_expr","process_regular_node"),$alias($Processor_on_empty_else$19,"on_blockarg_expr","process_regular_node"),$alias($Processor_on_empty_else$19,"on_block_pass","process_regular_node"),$alias($Processor_on_empty_else$19,"on_module","process_regular_node"),$alias($Processor_on_empty_else$19,"on_class","process_regular_node"),$alias($Processor_on_empty_else$19,"on_sclass","process_regular_node"),Opal.def($Processor_on_empty_else$19,"$on_def",$Processor_process_argument_node$18=function(node){var $a=[].concat(Opal.to_a(node)),name=null==$a[0]?nil:$a[0],args_node=null==$a[1]?nil:$a[1],body_node=null==$a[2]?nil:$a[2];return node.$updated(nil,[name,this.$process(args_node),this.$process(body_node)])},$Processor_process_argument_node$18.$$arity=1),Opal.def($Processor_on_empty_else$19,"$on_defs",$Processor_process_argument_node$18=function(node){var $a=[].concat(Opal.to_a(node)),definee_node=null==$a[0]?nil:$a[0],name=null==$a[1]?nil:$a[1],args_node=null==$a[2]?nil:$a[2],body_node=null==$a[3]?nil:$a[3];return node.$updated(nil,[this.$process(definee_node),name,this.$process(args_node),this.$process(body_node)])},$Processor_process_argument_node$18.$$arity=1),$alias($Processor_on_empty_else$19,"on_undef","process_regular_node"),$alias($Processor_on_empty_else$19,"on_alias","process_regular_node"),Opal.def($Processor_on_empty_else$19,"$on_send",$Processor_process_argument_node$18=function(node){var receiver_node=nil,method_name=nil,$a=[].concat(Opal.to_a(node)),receiver_node=null==$a[0]?nil:$a[0],method_name=null==$a[1]?nil:$a[1],arg_nodes=$slice.call($a,2);return $truthy(receiver_node)&&(receiver_node=this.$process(receiver_node)),node.$updated(nil,[receiver_node,method_name].concat(Opal.to_a(this.$process_all(arg_nodes))))},$Processor_process_argument_node$18.$$arity=1),$alias($Processor_on_empty_else$19,"on_csend","on_send"),$alias($Processor_on_empty_else$19,"on_index","process_regular_node"),$alias($Processor_on_empty_else$19,"on_indexasgn","process_regular_node"),$alias($Processor_on_empty_else$19,"on_block","process_regular_node"),$alias($Processor_on_empty_else$19,"on_lambda","process_regular_node"),Opal.def($Processor_on_empty_else$19,"$on_numblock",$Processor_process_argument_node$18=function(node){var $a=[].concat(Opal.to_a(node)),method_call=null==$a[0]?nil:$a[0],max_numparam=null==$a[1]?nil:$a[1],body=null==$a[2]?nil:$a[2];return 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$zuper_ii,$iter=$Buffer_freeze$19.$$p,$zuper=nil,$zuper_i=nil;for($iter&&($Buffer_freeze$19.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return this.$source_lines(),this.$line_begins(),this.$source_range(),$send2(this,$find_super(this,"freeze",$Buffer_freeze$19,!1,!0),"freeze",$zuper,$iter)},$Buffer_freeze$19.$$arity=0),Opal.def($Buffer_bsearch$25,"$inspect",$Buffer_bsearch$23=function(){return"#<"+this.$class()+" "+this.$name()+">"},$Buffer_bsearch$23.$$arity=0),$Buffer_bsearch$25.$private(),Opal.def($Buffer_bsearch$25,"$line_begins",$Buffer_bsearch$23=function(){var $ret_or_9,self=this,begins=nil,index=nil;return self.line_begins=function(){if($truthy($ret_or_9=self.line_begins))return $ret_or_9;for(begins=[0],index=0;$truthy(index=self.source.$index($enc("\n","ASCII-8BIT").$freeze(),index));)index=$rb_plus(index,1),begins["$<<"](index);return 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$Range_inspect$29.$$prototype.begin_pos=$Range_inspect$29.$$prototype.end_pos=$Range_inspect$29.$$prototype.source_buffer=nil,$Range_inspect$29.$include($$($nesting,"Comparable")),$Range_inspect$29.$attr_reader("source_buffer"),$Range_inspect$29.$attr_reader("begin_pos","end_pos"),Opal.def($Range_inspect$29,"$initialize",$Range_hash$28=function(source_buffer,begin_pos,$a){var lhs,rhs;return $truthy((rhs=begin_pos,"number"==typeof(lhs=$a)&&"number"==typeof rhs?lhs<rhs:lhs["$<"](rhs)))&&this.$raise($$($nesting,"ArgumentError"),"Parser::Source::Range: end_pos must not be less than begin_pos"),$truthy(source_buffer["$nil?"]())&&this.$raise($$($nesting,"ArgumentError"),"Parser::Source::Range: source_buffer must not be nil"),this.source_buffer=source_buffer,$a=[begin_pos,$a],this.begin_pos=$a[0],this.end_pos=$a[1],this.$freeze()},$Range_hash$28.$$arity=3),Opal.def($Range_inspect$29,"$begin",$Range_hash$28=function(){return this.$with($hash2(["end_pos"],{end_pos:this.begin_pos}))},$Range_hash$28.$$arity=0),Opal.def($Range_inspect$29,"$end",$Range_hash$28=function(){return this.$with($hash2(["begin_pos"],{begin_pos:this.end_pos}))},$Range_hash$28.$$arity=0),Opal.def($Range_inspect$29,"$size",$Range_hash$28=function(){var lhs,rhs;return lhs=this.end_pos,rhs=this.begin_pos,"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)},$Range_hash$28.$$arity=0),$alias($Range_inspect$29,"length","size"),Opal.def($Range_inspect$29,"$line",$Range_hash$28=function(){return this.source_buffer.$line_for_position(this.begin_pos)},$Range_hash$28.$$arity=0),$Range_inspect$29.$alias_method("first_line","line"),Opal.def($Range_inspect$29,"$column",$Range_hash$28=function(){return this.source_buffer.$column_for_position(this.begin_pos)},$Range_hash$28.$$arity=0),Opal.def($Range_inspect$29,"$last_line",$Range_hash$28=function(){return this.source_buffer.$line_for_position(this.end_pos)},$Range_hash$28.$$arity=0),Opal.def($Range_inspect$29,"$last_column",$Range_hash$28=function(){return this.source_buffer.$column_for_position(this.end_pos)},$Range_hash$28.$$arity=0),Opal.def($Range_inspect$29,"$column_range",$Range_hash$28=function(){return $truthy(this.$line()["$!="](this.$last_line()))&&this.$raise($$($nesting,"RangeError"),this.$inspect()+" spans more than one line"),Opal.Range.$new(this.$column(),this.$last_column(),!0)},$Range_hash$28.$$arity=0),Opal.def($Range_inspect$29,"$source_line",$Range_hash$28=function(){return this.source_buffer.$source_line(this.$line())},$Range_hash$28.$$arity=0),Opal.def($Range_inspect$29,"$source",$Range_hash$28=function(){return this.source_buffer.$slice(Opal.Range.$new(this.$begin_pos(),this.$end_pos(),!0))},$Range_hash$28.$$arity=0),Opal.def($Range_inspect$29,"$is?",$Range_hash$28=function($a){return Opal.slice.call(arguments,0,arguments.length)["$include?"](this.$source())},$Range_hash$28.$$arity=-1),Opal.def($Range_inspect$29,"$to_a",$Range_hash$28=function(){return Opal.Range.$new(this.begin_pos,this.end_pos,!0).$to_a()},$Range_hash$28.$$arity=0),Opal.def($Range_inspect$29,"$to_range",$Range_hash$28=function(){return Opal.Range.$new(this.$begin_pos(),this.$end_pos(),!0)},$Range_hash$28.$$arity=0),Opal.def($Range_inspect$29,"$to_s",$Range_hash$28=function(){var line=nil,$a=this.source_buffer.$decompose_position(this.begin_pos),$a=Opal.to_ary($a),line=null==$a[0]?nil:$a[0],column=null==$a[1]?nil:$a[1];return[this.source_buffer.$name(),line,$rb_plus(column,1)].$join(":")},$Range_hash$28.$$arity=0),Opal.def($Range_inspect$29,"$with",$Range_hash$28=function(end_pos){var begin_pos;if(null==end_pos)end_pos=$hash2([],{});else if(!end_pos.$$is_hash)throw Opal.ArgumentError.$new("expected kwargs");return null==(begin_pos=end_pos.$$smap.begin_pos)&&(begin_pos=this.begin_pos),null==(end_pos=end_pos.$$smap.end_pos)&&(end_pos=this.end_pos),$$($nesting,"Range").$new(this.source_buffer,begin_pos,end_pos)},$Range_hash$28.$$arity=-1),Opal.def($Range_inspect$29,"$adjust",$Range_hash$28=function(end_pos){var begin_pos;if(null==end_pos)end_pos=$hash2([],{});else if(!end_pos.$$is_hash)throw Opal.ArgumentError.$new("expected kwargs");return null==(begin_pos=end_pos.$$smap.begin_pos)&&(begin_pos=0),null==(end_pos=end_pos.$$smap.end_pos)&&(end_pos=0),$$($nesting,"Range").$new(this.source_buffer,$rb_plus(this.begin_pos,begin_pos),$rb_plus(this.end_pos,end_pos))},$Range_hash$28.$$arity=-1),Opal.def($Range_inspect$29,"$resize",$Range_hash$28=function(new_size){return this.$with($hash2(["end_pos"],{end_pos:$rb_plus(this.begin_pos,new_size)}))},$Range_hash$28.$$arity=1),Opal.def($Range_inspect$29,"$join",$Range_hash$28=function(other){return $$($nesting,"Range").$new(this.source_buffer,[this.begin_pos,other.$begin_pos()].$min(),[this.end_pos,other.$end_pos()].$max())},$Range_hash$28.$$arity=1),Opal.def($Range_inspect$29,"$intersect",$Range_hash$28=function(other){return $truthy(this["$disjoint?"](other))?nil:$$($nesting,"Range").$new(this.source_buffer,[this.begin_pos,other.$begin_pos()].$max(),[this.end_pos,other.$end_pos()].$min())},$Range_hash$28.$$arity=1),Opal.def($Range_inspect$29,"$disjoint?",$Range_hash$28=function(other){var $ret_or_2,self=this,$ret_or_1=nil;return $truthy($truthy($ret_or_1=self["$empty?"]())?other["$empty?"]():$ret_or_1)?self.begin_pos["$!="](other.$begin_pos()):$truthy($ret_or_2=$rb_ge(self.begin_pos,other.$end_pos()))?$ret_or_2:$rb_ge(other.$begin_pos(),self.end_pos)},$Range_hash$28.$$arity=1),Opal.def($Range_inspect$29,"$overlaps?",$Range_hash$28=function(other){return this["$disjoint?"](other)["$!"]()},$Range_hash$28.$$arity=1),Opal.def($Range_inspect$29,"$contains?",$Range_hash$28=function(other){return $rb_ge($rb_plus(other.$begin_pos()["$<=>"](this.begin_pos),this.end_pos["$<=>"](other.$end_pos())),$truthy(other["$empty?"]())?2:1)},$Range_hash$28.$$arity=1),Opal.def($Range_inspect$29,"$contained?",$Range_hash$28=function(other){return other["$contains?"](this)},$Range_hash$28.$$arity=1),Opal.def($Range_inspect$29,"$crossing?",$Range_hash$28=function(rhs){var lhs;return!!$truthy(this["$overlaps?"](rhs))&&(lhs=this.begin_pos["$<=>"](rhs.$begin_pos()),rhs=this.end_pos["$<=>"](rhs.$end_pos()),("number"==typeof lhs&&"number"==typeof rhs?lhs*rhs:lhs["$*"](rhs))["$=="](1))},$Range_hash$28.$$arity=1),Opal.def($Range_inspect$29,"$empty?",$Range_hash$28=function(){return this.begin_pos["$=="](this.end_pos)},$Range_hash$28.$$arity=0),Opal.def($Range_inspect$29,"$<=>",$Range_hash$28=function(other){var $ret_or_4,self=this,$ret_or_3=nil;return $truthy($truthy($ret_or_3=other["$is_a?"]($$$($$$($$$("::","Parser"),"Source"),"Range")))?self.source_buffer["$=="](other.$source_buffer()):$ret_or_3)?$truthy($ret_or_4=self.begin_pos["$<=>"](other.$begin_pos())["$nonzero?"]())?$ret_or_4:self.end_pos["$<=>"](other.$end_pos()):nil},$Range_hash$28.$$arity=1),$Range_inspect$29.$alias_method("eql?","=="),Opal.def($Range_inspect$29,"$hash",$Range_hash$28=function(){return[this.source_buffer,this.begin_pos,this.end_pos].$hash()},$Range_hash$28.$$arity=0),Opal.def($Range_inspect$29,"$inspect",$Range_inspect$29=function(){return"#<Parser::Source::Range "+this.source_buffer.$name()+" "+this.begin_pos+"..."+this.end_pos+">"},$Range_inspect$29.$$arity=0),nil&&"inspect"}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/comment"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy;return Opal.add_stubs(["$attr_reader","$alias_method","$new","$associate","$associate_locations","$associate_by_identity","$freeze","$source","$start_with?","$text","$==","$type","$is_a?","$location","$to_s","$expression","$inspect"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($Comment_inspect$9,$Comment_$eq_eq$8){var $Comment_inspect$9=$klass($Comment_inspect$9,null,"Comment"),$nesting=[$Comment_inspect$9].concat($Comment_$eq_eq$8);return $Comment_inspect$9.$$prototype.location=nil,$Comment_inspect$9.$attr_reader("text"),$Comment_inspect$9.$attr_reader("location"),$Comment_inspect$9.$alias_method("loc","location"),Opal.defs($Comment_inspect$9,"$associate",$Comment_$eq_eq$8=function(ast,comments){return $$($nesting,"Associator").$new(ast,comments).$associate()},$Comment_$eq_eq$8.$$arity=2),Opal.defs($Comment_inspect$9,"$associate_locations",$Comment_$eq_eq$8=function(ast,comments){return $$($nesting,"Associator").$new(ast,comments).$associate_locations()},$Comment_$eq_eq$8.$$arity=2),Opal.defs($Comment_inspect$9,"$associate_by_identity",$Comment_$eq_eq$8=function(ast,comments){return $$($nesting,"Associator").$new(ast,comments).$associate_by_identity()},$Comment_$eq_eq$8.$$arity=2),Opal.def($Comment_inspect$9,"$initialize",$Comment_$eq_eq$8=function(range){return this.location=$$$($$$($$($nesting,"Parser"),"Source"),"Map").$new(range),this.text=range.$source().$freeze(),this.$freeze()},$Comment_$eq_eq$8.$$arity=1),Opal.def($Comment_inspect$9,"$type",$Comment_$eq_eq$8=function(){return $truthy(this.$text()["$start_with?"]("#".$freeze()))?"inline":$truthy(this.$text()["$start_with?"]("=begin".$freeze()))?"document":nil},$Comment_$eq_eq$8.$$arity=0),Opal.def($Comment_inspect$9,"$inline?",$Comment_$eq_eq$8=function(){return this.$type()["$=="]("inline")},$Comment_$eq_eq$8.$$arity=0),Opal.def($Comment_inspect$9,"$document?",$Comment_$eq_eq$8=function(){return this.$type()["$=="]("document")},$Comment_$eq_eq$8.$$arity=0),Opal.def($Comment_inspect$9,"$==",$Comment_$eq_eq$8=function(other){var $ret_or_1;return $truthy($ret_or_1=other["$is_a?"]($$$($$($nesting,"Source"),"Comment")))?this.location["$=="](other.$location()):$ret_or_1},$Comment_$eq_eq$8.$$arity=1),Opal.def($Comment_inspect$9,"$inspect",$Comment_inspect$9=function(){return"#<Parser::Source::Comment "+this.location.$expression().$to_s()+" "+this.$text().$inspect()+">"},$Comment_inspect$9.$$arity=0),nil&&"inspect"}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/comment/associator"]=function(Opal){function $rb_le(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs<=rhs:lhs["$<="](rhs)}Opal.top;var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send;return Opal.add_stubs(["$attr_accessor","$do_associate","$private","$freeze","$[]","$include?","$type","$sort_by","$compact","$children","$begin_pos","$expression","$loc","$select","$is_a?","$new","$[]=","$-","$==","$compare_by_identity","$advance_comment","$advance_through_directives","$visit","$process_leading_comments","$location","$<=","$line","$last_line","$each","$children_in_source_order","$process_trailing_comments","$current_comment_before?","$associate_and_advance_comment","$current_comment_before_end?","$current_comment_decorates?","$+","$!","$end_pos","$<<","$start_with?","$text","$=~"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($Associator_advance_through_directives$19,$Associator_associate_and_advance_comment$18){var $Associator_advance_through_directives$19=$klass($Associator_advance_through_directives$19,null,"Associator"),$nesting=[$Associator_advance_through_directives$19].concat($Associator_associate_and_advance_comment$18);return $Associator_advance_through_directives$19.$$prototype.map_using=$Associator_advance_through_directives$19.$$prototype.mapping=$Associator_advance_through_directives$19.$$prototype.skip_directives=$Associator_advance_through_directives$19.$$prototype.ast=$Associator_advance_through_directives$19.$$prototype.current_comment=$Associator_advance_through_directives$19.$$prototype.comment_num=$Associator_advance_through_directives$19.$$prototype.comments=nil,$Associator_advance_through_directives$19.$attr_accessor("skip_directives"),Opal.def($Associator_advance_through_directives$19,"$initialize",$Associator_associate_and_advance_comment$18=function(ast,comments){return this.ast=ast,this.comments=comments,this.skip_directives=!0},$Associator_associate_and_advance_comment$18.$$arity=2),Opal.def($Associator_advance_through_directives$19,"$associate",$Associator_associate_and_advance_comment$18=function(){return this.map_using="eql",this.$do_associate()},$Associator_associate_and_advance_comment$18.$$arity=0),Opal.def($Associator_advance_through_directives$19,"$associate_locations",$Associator_associate_and_advance_comment$18=function(){return this.map_using="location",this.$do_associate()},$Associator_associate_and_advance_comment$18.$$arity=0),Opal.def($Associator_advance_through_directives$19,"$associate_by_identity",$Associator_associate_and_advance_comment$18=function(){return this.map_using="identity",this.$do_associate()},$Associator_associate_and_advance_comment$18.$$arity=0),$Associator_advance_through_directives$19.$private(),Opal.const_set($nesting[0],"POSTFIX_TYPES",$$($nesting,"Set")["$[]"]("if","while","while_post","until","until_post","masgn").$freeze()),Opal.def($Associator_advance_through_directives$19,"$children_in_source_order",$Associator_associate_and_advance_comment$18=function(node){var $$6,$$7;return $truthy($$($nesting,"POSTFIX_TYPES")["$include?"](node.$type()))?$send(node.$children().$compact(),"sort_by",[],(($$6=function(child){null==$$6.$$s||$$6.$$s;return null==child&&(child=nil),child.$loc().$expression().$begin_pos()}).$$s=this,$$6.$$arity=1,$$6)):$send(node.$children(),"select",[],(($$7=function(child){null==$$7.$$s||$$7.$$s;var $ret_or_1,$ret_or_2=nil;return null==child&&(child=nil),$truthy($ret_or_1=$truthy($ret_or_2=child["$is_a?"]($$$($$($nesting,"AST"),"Node")))?child.$loc():$ret_or_2)?child.$loc().$expression():$ret_or_1}).$$s=this,$$7.$$arity=1,$$7))},$Associator_associate_and_advance_comment$18.$$arity=1),Opal.def($Associator_advance_through_directives$19,"$do_associate",$Associator_associate_and_advance_comment$18=function(){var $$9;return this.mapping=$send($$($nesting,"Hash"),"new",[],(($$9=function(rhs,k){null==$$9.$$s||$$9.$$s;var lhs=nil;return null==rhs&&(rhs=nil),null==k&&(k=nil),lhs=[k,[]],$send(rhs,"[]=",Opal.to_a(lhs)),lhs[rhs=1,"number"==typeof(lhs=lhs.length)&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)]}).$$s=this,$$9.$$arity=2,$$9)),this.map_using["$=="]("identity")&&this.mapping.$compare_by_identity(),this.comment_num=-1,this.$advance_comment(),$truthy(this.skip_directives)&&this.$advance_through_directives(),$truthy(this.ast)&&this.$visit(this.ast),this.mapping},$Associator_associate_and_advance_comment$18.$$arity=0),Opal.def($Associator_advance_through_directives$19,"$visit",$Associator_associate_and_advance_comment$18=function(node){var $$11,self=this,node_loc=nil,$ret_or_3=nil;return self.$process_leading_comments(node),$truthy(self.current_comment)?(node_loc=node.$location(),$truthy($truthy($ret_or_3=$rb_le(self.current_comment.$location().$line(),node_loc.$last_line()))?$ret_or_3:node_loc["$is_a?"]($$$($$($nesting,"Map"),"Heredoc")))?($send(self.$children_in_source_order(node),"each",[],(($$11=function(child){var self=null==$$11.$$s?this:$$11.$$s;return null==child&&(child=nil),self.$visit(child)}).$$s=self,$$11.$$arity=1,$$11)),self.$process_trailing_comments(node)):nil):nil},$Associator_associate_and_advance_comment$18.$$arity=1),Opal.def($Associator_advance_through_directives$19,"$process_leading_comments",$Associator_associate_and_advance_comment$18=function(node){if(node.$type()["$=="]("begin"))return nil;for(;$truthy(this["$current_comment_before?"](node));)this.$associate_and_advance_comment(node)},$Associator_associate_and_advance_comment$18.$$arity=1),Opal.def($Associator_advance_through_directives$19,"$process_trailing_comments",$Associator_associate_and_advance_comment$18=function(node){for(;$truthy(this["$current_comment_before_end?"](node));)this.$associate_and_advance_comment(node);for(;$truthy(this["$current_comment_decorates?"](node));)this.$associate_and_advance_comment(node)},$Associator_associate_and_advance_comment$18.$$arity=1),Opal.def($Associator_advance_through_directives$19,"$advance_comment",$Associator_associate_and_advance_comment$18=function(){var lhs,rhs;return this.comment_num=(lhs=this.comment_num,rhs=1,"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)),this.current_comment=this.comments["$[]"](this.comment_num)},$Associator_associate_and_advance_comment$18.$$arity=0),Opal.def($Associator_advance_through_directives$19,"$current_comment_before?",$Associator_associate_and_advance_comment$18=function(node){var comment_loc=nil,node_loc=nil;return!$truthy(this.current_comment["$!"]())&&(comment_loc=this.current_comment.$location().$expression(),node_loc=node.$location().$expression(),$rb_le(comment_loc.$end_pos(),node_loc.$begin_pos()))},$Associator_associate_and_advance_comment$18.$$arity=1),Opal.def($Associator_advance_through_directives$19,"$current_comment_before_end?",$Associator_associate_and_advance_comment$18=function(node){var comment_loc=nil,node_loc=nil;return!$truthy(this.current_comment["$!"]())&&(comment_loc=this.current_comment.$location().$expression(),node_loc=node.$location().$expression(),$rb_le(comment_loc.$end_pos(),node_loc.$end_pos()))},$Associator_associate_and_advance_comment$18.$$arity=1),Opal.def($Associator_advance_through_directives$19,"$current_comment_decorates?",$Associator_associate_and_advance_comment$18=function(node){return!$truthy(this.current_comment["$!"]())&&this.current_comment.$location().$line()["$=="](node.$location().$last_line())},$Associator_associate_and_advance_comment$18.$$arity=1),Opal.def($Associator_advance_through_directives$19,"$associate_and_advance_comment",$Associator_associate_and_advance_comment$18=function(node){var self=this,key=self.map_using["$=="]("location")?node.$location():node;return self.mapping["$[]"](key)["$<<"](self.current_comment),self.$advance_comment()},$Associator_associate_and_advance_comment$18.$$arity=1),Opal.const_set($nesting[0],"MAGIC_COMMENT_RE",/^#\s*(-\*-|)\s*(frozen_string_literal|warn_indent|warn_past_scope):.*\1$/),Opal.def($Associator_advance_through_directives$19,"$advance_through_directives",$Associator_advance_through_directives$19=function(){var self=this,$ret_or_4=nil,$ret_or_5=nil,$ret_or_6=nil;return $truthy($truthy($ret_or_4=self.current_comment)?self.current_comment.$text()["$start_with?"]("#!".$freeze()):$ret_or_4)&&self.$advance_comment(),$truthy($truthy($ret_or_5=self.current_comment)?self.current_comment.$text()["$=~"]($$($nesting,"MAGIC_COMMENT_RE")):$ret_or_5)&&self.$advance_comment(),$truthy($truthy($ret_or_6=self.current_comment)?self.current_comment.$text()["$=~"]($$$($$($nesting,"Buffer"),"ENCODING_RE")):$ret_or_6)?self.$advance_comment():nil},$Associator_advance_through_directives$19.$$arity=0),nil&&"advance_through_directives"}($$($nesting,"Comment"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/rewriter"]=function(Opal){function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}function $rb_le(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs<=rhs:lhs["$<="](rhs)}Opal.top;var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$send=Opal.send,$gvars=Opal.gvars,$truthy=Opal.truthy,$hash2=Opal.hash2;return 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null==other&&(other=nil),overlap=range.$intersect(other.$range()),!!$truthy(overlap["$nil?"]())||(repl1_offset=$rb_minus(overlap.$begin_pos(),range.$begin_pos()),repl2_offset=$rb_minus(overlap.$begin_pos(),other.$range().$begin_pos()),repl1_length=[$rb_minus(other.$range().$length(),repl2_offset),$rb_minus(other.$replacement().$length(),repl2_offset)].$max(),repl2_length=[$rb_minus(range.$length(),repl1_offset),$rb_minus(action.$replacement().$length(),repl1_offset)].$max(),replacement1=$truthy($ret_or_8=action.$replacement()["$[]"](repl1_offset,repl1_length))?$ret_or_8:"".$freeze(),replacement2=$truthy($ret_or_9=other.$replacement()["$[]"](repl2_offset,repl2_length))?$ret_or_9:"".$freeze(),replacement1["$=="](replacement2))}).$$s=this,$$29.$$arity=1,$$29))},$Rewriter_adjacent$ques$45.$$arity=2),Opal.def(self,"$merge_actions",$Rewriter_adjacent$ques$45=function(action,existing){var $$31,$$32,actions=nil,range=(actions=$send(existing.$push(action),"sort_by",[],(($$31=function(a){null==$$31.$$s||$$31.$$s;return null==a&&(a=nil),[a.$range().$begin_pos(),a.$range().$end_pos()]}).$$s=this,$$31.$$arity=1,$$31))).$first().$range().$join($send(actions,"max_by",[],(($$32=function(a){null==$$32.$$s||$$32.$$s;return null==a&&(a=nil),a.$range().$end_pos()}).$$s=this,$$32.$$arity=1,$$32)).$range());return $$$($$($nesting,"Rewriter"),"Action").$new(range,this.$merge_replacements(actions))},$Rewriter_adjacent$ques$45.$$arity=2),Opal.def(self,"$merge_actions!",$Rewriter_adjacent$ques$45=function(action,existing){var new_action=this.$merge_actions(action,existing);return this.$active_queue().$delete(action),this.$replace_actions(existing,new_action)},$Rewriter_adjacent$ques$45.$$arity=2),Opal.def(self,"$merge_replacements",$Rewriter_adjacent$ques$45=function(actions){var $$35,result=nil,prev_act=nil,result="".$dup(),prev_act=nil;return $send(actions,"each",[],(($$35=function(act){null==$$35.$$s||$$35.$$s;var offset,lhs,rhs=nil;return null==act&&(act=nil),$truthy($truthy(rhs=prev_act["$!"]())?rhs:act.$range()["$disjoint?"](prev_act.$range()))?result["$<<"](act.$replacement()):(offset=$rb_minus([$rb_plus(prev_act.$range().$begin_pos(),prev_act.$replacement().$length()),prev_act.$range().$end_pos()].$max(),act.$range().$begin_pos()),$truthy((lhs=offset,rhs=act.$replacement().$size(),"number"==typeof lhs&&"number"==typeof rhs?lhs<rhs:lhs["$<"](rhs)))&&result["$<<"](act.$replacement()["$[]"](Opal.Range.$new(offset,-1,!1)))),prev_act=act}).$$s=this,$$35.$$arity=1,$$35)),result},$Rewriter_adjacent$ques$45.$$arity=1),Opal.def(self,"$replace_actions",$Rewriter_adjacent$ques$45=function(old,updated){var $$37;return $send(old,"each",[],(($$37=function(act){var self=null==$$37.$$s?this:$$37.$$s;return null==act&&(act=nil),self.$active_queue().$delete(act)}).$$s=this,$$37.$$arity=1,$$37)),this.$active_queue()["$<<"](updated)},$Rewriter_adjacent$ques$45.$$arity=2),Opal.def(self,"$raise_clobber_error",$Rewriter_adjacent$ques$45=function(action,existing){var diagnostic=$$($nesting,"Diagnostic").$new("error","invalid_action",$hash2(["action"],{action:action}),action.$range());return this.diagnostics.$process(diagnostic),diagnostic=$$($nesting,"Diagnostic").$new("note","clobbered",$hash2(["action"],{action:existing["$[]"](0)}),existing["$[]"](0).$range()),this.diagnostics.$process(diagnostic),this.$raise($$($nesting,"ClobberingError"),"Parser::Source::Rewriter detected clobbering")},$Rewriter_adjacent$ques$45.$$arity=2),Opal.def(self,"$in_transaction?",$Rewriter_adjacent$ques$45=function(){return this.pending_queue["$nil?"]()["$!"]()},$Rewriter_adjacent$ques$45.$$arity=0),Opal.def(self,"$active_queue",$Rewriter_adjacent$ques$45=function(){var $ret_or_11;return $truthy($ret_or_11=this.pending_queue)?$ret_or_11:this.queue},$Rewriter_adjacent$ques$45.$$arity=0),Opal.def(self,"$active_clobber",$Rewriter_adjacent$ques$45=function(){var $ret_or_12;return $truthy($ret_or_12=this.pending_clobber)?$ret_or_12:this.clobber},$Rewriter_adjacent$ques$45.$$arity=0),Opal.def(self,"$active_insertions",$Rewriter_adjacent$ques$45=function(){var $ret_or_13;return $truthy($ret_or_13=this.pending_insertions)?$ret_or_13:this.insertions},$Rewriter_adjacent$ques$45.$$arity=0),Opal.def(self,"$active_clobber=",$Rewriter_adjacent$ques$45=function(value){return $truthy(this.pending_clobber)?this.pending_clobber=value:this.clobber=value},$Rewriter_adjacent$ques$45.$$arity=1),Opal.def(self,"$active_insertions=",$Rewriter_adjacent$ques$45=function(value){return $truthy(this.pending_insertions)?this.pending_insertions=value:this.insertions=value},$Rewriter_adjacent$ques$45.$$arity=1),Opal.def(self,"$adjacent?",$Rewriter_adjacent$ques$45=function(range1,range2){var $ret_or_14;return $truthy($ret_or_14=$rb_le(range1.$begin_pos(),range2.$end_pos()))?$rb_le(range2.$begin_pos(),range1.$end_pos()):$ret_or_14},$Rewriter_adjacent$ques$45.$$arity=2),Opal.const_set($nesting[0],"DEPRECATION_WARNING",["Parser::Source::Rewriter is deprecated.","Please update your code to use Parser::Source::TreeRewriter instead"].$join("\n").$freeze()),self.$extend($$($nesting,"Deprecation"))}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/rewriter/action"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy;return Opal.add_stubs(["$include","$attr_reader","$alias_method","$freeze","$<=>","$begin_pos","$range","$zero?","$order","$==","$length","$empty?","$inspect"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($Action_to_s$3,$Action_$lt_eq_gt$2){$Action_to_s$3=$klass($Action_to_s$3,null,"Action"),$Action_$lt_eq_gt$2=[$Action_to_s$3].concat($Action_$lt_eq_gt$2);return $Action_to_s$3.$$prototype.range=$Action_to_s$3.$$prototype.replacement=nil,$Action_to_s$3.$include($$($Action_$lt_eq_gt$2,"Comparable")),$Action_to_s$3.$attr_reader("range","replacement","allow_multiple_insertions","order"),$Action_to_s$3.$alias_method("allow_multiple_insertions?","allow_multiple_insertions"),Opal.def($Action_to_s$3,"$initialize",$Action_$lt_eq_gt$2=function(range,replacement,allow_multiple_insertions,order){return null==replacement&&(replacement=""),null==allow_multiple_insertions&&(allow_multiple_insertions=!1),null==order&&(order=0),this.range=range,this.replacement=replacement,this.allow_multiple_insertions=allow_multiple_insertions,this.order=order,this.$freeze()},$Action_$lt_eq_gt$2.$$arity=-2),Opal.def($Action_to_s$3,"$<=>",$Action_$lt_eq_gt$2=function(other){var result=nil,result=this.$range().$begin_pos()["$<=>"](other.$range().$begin_pos());return $truthy(result["$zero?"]())?this.$order()["$<=>"](other.$order()):result},$Action_$lt_eq_gt$2.$$arity=1),Opal.def($Action_to_s$3,"$to_s",$Action_to_s$3=function(){var self=this,$ret_or_1=nil;return $truthy($truthy($ret_or_1=self.range.$length()["$=="](0))?self.replacement["$empty?"]():$ret_or_1)?"do nothing":self.range.$length()["$=="](0)?"insert "+self.replacement.$inspect():$truthy(self.replacement["$empty?"]())?"remove "+self.range.$length()+" character(s)":"replace "+self.range.$length()+" character(s) with "+self.replacement.$inspect()},$Action_to_s$3.$$arity=0),nil&&"to_s"}($$($nesting,"Rewriter"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/tree_rewriter"]=function(Opal){function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}Opal.top;var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$hash2=Opal.hash2,$lambda=Opal.lambda,$gvars=Opal.gvars,$send=Opal.send,$truthy=Opal.truthy,$range=Opal.range,$slice=(Opal.hash,Opal.slice);return Opal.add_stubs(["$attr_reader","$new","$puts","$render","$consumer=","$-","$freeze","$check_policy_validity","$method","$adjust","$source_range","$empty?","$==","$source_buffer","$raise","$combine","$action_root","$merge!","$dup","$contract","$+","$begin_pos","$range","$end_pos","$check_range_validity","$moved","$to_s","$replace","$wrap","$source","$each","$ordered_replacements","$<<","$[]","$length","$join","$nested_actions","$class","$name","$action_summary","$warn_of_deprecation","$insert_before","$insert_after","$extend","$protected","$private","$as_replacements","$size","$===","$first","$map","$to_range","$inspect","$values","$<","$>","$trigger_policy","$process"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($TreeRewriter_trigger_policy$27,$TreeRewriter_check_range_validity$25){var $TreeRewriter_transaction$16,$TreeRewriter_enforce_policy$26,$TreeRewriter_trigger_policy$27=$klass($TreeRewriter_trigger_policy$27,null,"TreeRewriter"),$nesting=[$TreeRewriter_trigger_policy$27].concat($TreeRewriter_check_range_validity$25);return $TreeRewriter_trigger_policy$27.$$prototype.diagnostics=$TreeRewriter_trigger_policy$27.$$prototype.source_buffer=$TreeRewriter_trigger_policy$27.$$prototype.enforcer=$TreeRewriter_trigger_policy$27.$$prototype.action_root=$TreeRewriter_trigger_policy$27.$$prototype.in_transaction=$TreeRewriter_trigger_policy$27.$$prototype.policy=nil,$TreeRewriter_trigger_policy$27.$attr_reader("source_buffer"),$TreeRewriter_trigger_policy$27.$attr_reader("diagnostics"),Opal.def($TreeRewriter_trigger_policy$27,"$initialize",$TreeRewriter_check_range_validity$25=function(source_buffer,swallowed_insertions){var crossing_deletions,different_replacements,$$2,$writer,all_encompassing_range;if(null==swallowed_insertions)swallowed_insertions=$hash2([],{});else if(!swallowed_insertions.$$is_hash)throw Opal.ArgumentError.$new("expected kwargs");return null==(crossing_deletions=swallowed_insertions.$$smap.crossing_deletions)&&(crossing_deletions="accept"),null==(different_replacements=swallowed_insertions.$$smap.different_replacements)&&(different_replacements="accept"),null==(swallowed_insertions=swallowed_insertions.$$smap.swallowed_insertions)&&(swallowed_insertions="accept"),this.diagnostics=$$$($$($nesting,"Diagnostic"),"Engine").$new(),$writer=[$lambda((($$2=function(diag){null==$$2.$$s||$$2.$$s;return null==$gvars.stderr&&($gvars.stderr=nil),null==diag&&(diag=nil),$gvars.stderr.$puts(diag.$render())}).$$s=this,$$2.$$arity=1,$$2))],$send(this.diagnostics,"consumer=",Opal.to_a($writer)),$rb_minus($writer.length,1),this.source_buffer=source_buffer,this.in_transaction=!1,this.policy=$hash2(["crossing_deletions","different_replacements","swallowed_insertions"],{crossing_deletions:crossing_deletions,different_replacements:different_replacements,swallowed_insertions:swallowed_insertions}).$freeze(),this.$check_policy_validity(),this.enforcer=this.$method("enforce_policy"),all_encompassing_range=this.source_buffer.$source_range().$adjust($hash2(["begin_pos","end_pos"],{begin_pos:-1,end_pos:1})),this.action_root=$$$($$($nesting,"TreeRewriter"),"Action").$new(all_encompassing_range,this.enforcer)},$TreeRewriter_check_range_validity$25.$$arity=-2),Opal.def($TreeRewriter_trigger_policy$27,"$empty?",$TreeRewriter_check_range_validity$25=function(){return this.action_root["$empty?"]()},$TreeRewriter_check_range_validity$25.$$arity=0),Opal.def($TreeRewriter_trigger_policy$27,"$merge!",$TreeRewriter_check_range_validity$25=function(with$){return this.$source_buffer()["$=="](with$.$source_buffer())||this.$raise("TreeRewriter are not for the same source_buffer"),this.action_root=this.action_root.$combine(with$.$action_root()),this},$TreeRewriter_check_range_validity$25.$$arity=1),Opal.def($TreeRewriter_trigger_policy$27,"$merge",$TreeRewriter_check_range_validity$25=function(with$){return this.$dup()["$merge!"](with$)},$TreeRewriter_check_range_validity$25.$$arity=1),Opal.def($TreeRewriter_trigger_policy$27,"$import!",$TreeRewriter_check_range_validity$25=function(foreign_rewriter,offset){var merge_effective_range,merge_with,contracted=nil;if(null==offset)offset=$hash2([],{});else if(!offset.$$is_hash)throw Opal.ArgumentError.$new("expected kwargs");return null==(offset=offset.$$smap.offset)&&(offset=0),$truthy(foreign_rewriter["$empty?"]())||(contracted=foreign_rewriter.$action_root().$contract(),merge_effective_range=$$$($$$($$$("::","Parser"),"Source"),"Range").$new(this.source_buffer,$rb_plus(contracted.$range().$begin_pos(),offset),$rb_plus(contracted.$range().$end_pos(),offset)),this.$check_range_validity(merge_effective_range),merge_with=contracted.$moved(this.source_buffer,offset),this.action_root=this.action_root.$combine(merge_with)),this},$TreeRewriter_check_range_validity$25.$$arity=-2),Opal.def($TreeRewriter_trigger_policy$27,"$replace",$TreeRewriter_check_range_validity$25=function(range,content){return this.$combine(range,$hash2(["replacement"],{replacement:content}))},$TreeRewriter_check_range_validity$25.$$arity=2),Opal.def($TreeRewriter_trigger_policy$27,"$wrap",$TreeRewriter_check_range_validity$25=function(range,insert_before,insert_after){return this.$combine(range,$hash2(["insert_before","insert_after"],{insert_before:insert_before.$to_s(),insert_after:insert_after.$to_s()}))},$TreeRewriter_check_range_validity$25.$$arity=3),Opal.def($TreeRewriter_trigger_policy$27,"$remove",$TreeRewriter_check_range_validity$25=function(range){return this.$replace(range,"".$freeze())},$TreeRewriter_check_range_validity$25.$$arity=1),Opal.def($TreeRewriter_trigger_policy$27,"$insert_before",$TreeRewriter_check_range_validity$25=function(range,content){return this.$wrap(range,content,nil)},$TreeRewriter_check_range_validity$25.$$arity=2),Opal.def($TreeRewriter_trigger_policy$27,"$insert_after",$TreeRewriter_check_range_validity$25=function(range,content){return this.$wrap(range,nil,content)},$TreeRewriter_check_range_validity$25.$$arity=2),Opal.def($TreeRewriter_trigger_policy$27,"$process",$TreeRewriter_check_range_validity$25=function(){var $$13,source=nil,chunks=nil,last_end=nil,source=this.source_buffer.$source(),chunks=[],last_end=0;return $send(this.action_root.$ordered_replacements(),"each",[],(($$13=function(range,replacement){null==$$13.$$s||$$13.$$s;return null==range&&(range=nil),null==replacement&&(replacement=nil),chunks["$<<"](source["$[]"](Opal.Range.$new(last_end,range.$begin_pos(),!0)))["$<<"](replacement),last_end=range.$end_pos()}).$$s=this,$$13.$$arity=2,$$13)),chunks["$<<"](source["$[]"](Opal.Range.$new(last_end,source.$length(),!0))),chunks.$join()},$TreeRewriter_check_range_validity$25.$$arity=0),Opal.def($TreeRewriter_trigger_policy$27,"$as_replacements",$TreeRewriter_check_range_validity$25=function(){return this.action_root.$ordered_replacements()},$TreeRewriter_check_range_validity$25.$$arity=0),Opal.def($TreeRewriter_trigger_policy$27,"$as_nested_actions",$TreeRewriter_check_range_validity$25=function(){return this.action_root.$nested_actions()},$TreeRewriter_check_range_validity$25.$$arity=0),Opal.def($TreeRewriter_trigger_policy$27,"$transaction",$TreeRewriter_transaction$16=function(){var $iter=$TreeRewriter_transaction$16.$$p,$yield=$iter||nil,self=this,previous=nil,restore_root=nil;return $iter&&($TreeRewriter_transaction$16.$$p=null),function(){try{return $yield!==nil||self.$raise(self.$class()+"#transaction requires block"),previous=self.in_transaction,self.in_transaction=!0,restore_root=self.action_root,Opal.yieldX($yield,[]),restore_root=nil,self}finally{$truthy(restore_root)&&(self.action_root=restore_root),self.in_transaction=previous}}()},$TreeRewriter_transaction$16.$$arity=0),Opal.def($TreeRewriter_trigger_policy$27,"$in_transaction?",$TreeRewriter_check_range_validity$25=function(){return this.in_transaction},$TreeRewriter_check_range_validity$25.$$arity=0),Opal.def($TreeRewriter_trigger_policy$27,"$inspect",$TreeRewriter_check_range_validity$25=function(){return"#<"+this.$class()+" "+this.$source_buffer().$name()+": "+this.$action_summary()+">"},$TreeRewriter_check_range_validity$25.$$arity=0),Opal.def($TreeRewriter_trigger_policy$27,"$insert_before_multi",$TreeRewriter_check_range_validity$25=function(range,text){return this.$class().$warn_of_deprecation(),this.$insert_before(range,text)},$TreeRewriter_check_range_validity$25.$$arity=2),Opal.def($TreeRewriter_trigger_policy$27,"$insert_after_multi",$TreeRewriter_check_range_validity$25=function(range,text){return this.$class().$warn_of_deprecation(),this.$insert_after(range,text)},$TreeRewriter_check_range_validity$25.$$arity=2),Opal.const_set($nesting[0],"DEPRECATION_WARNING",["TreeRewriter#insert_before_multi and insert_before_multi exist only for legacy compatibility.","Please update your code to use `wrap`, `insert_before` or `insert_after` instead."].$join("\n").$freeze()),$TreeRewriter_trigger_policy$27.$extend($$($nesting,"Deprecation")),$TreeRewriter_trigger_policy$27.$protected(),$TreeRewriter_trigger_policy$27.$attr_reader("action_root"),$TreeRewriter_trigger_policy$27.$private(),Opal.def($TreeRewriter_trigger_policy$27,"$action_summary",$TreeRewriter_check_range_validity$25=function(){var $$22,replacements=nil,suffix=nil,parts=nil,$case=(replacements=this.$as_replacements()).$size();return 0["$==="]($case)?"empty":($range(1,3,!1)["$==="]($case)||(replacements=replacements.$first(3),suffix="…"),parts=$send(replacements,"map",[],(($$22=function($a){null==$$22.$$s||$$22.$$s;var range=nil,str=nil;return null==$a&&($a=nil),$a=$a,range=null==($a=Opal.to_ary($a))[0]?nil:$a[0],str=null==$a[1]?nil:$a[1],$truthy(str["$empty?"]())?"-"+range.$to_range():range.$size()["$=="](0)?"+"+str.$inspect()+"@"+range.$begin_pos():"^"+str.$inspect()+"@"+range.$to_range()}).$$s=this,$$22.$$arity=1,$$22.$$has_top_level_mlhs_arg=!0,$$22)),$truthy(suffix)&&parts["$<<"](suffix),parts.$join(", "))},$TreeRewriter_check_range_validity$25.$$arity=0),Opal.const_set($nesting[0],"ACTIONS",["accept","warn","raise"].$freeze()),Opal.def($TreeRewriter_trigger_policy$27,"$check_policy_validity",$TreeRewriter_check_range_validity$25=function(){var invalid=nil,invalid=$rb_minus(this.policy.$values(),$$($nesting,"ACTIONS"));return $truthy(invalid["$empty?"]())?nil:this.$raise($$($nesting,"ArgumentError"),"Invalid policy: "+invalid.$join(", "))},$TreeRewriter_check_range_validity$25.$$arity=0),Opal.def($TreeRewriter_trigger_policy$27,"$combine",$TreeRewriter_check_range_validity$25=function(range,attributes){var action;return range=this.$check_range_validity(range),action=$$$($$($nesting,"TreeRewriter"),"Action").$new(range,this.enforcer,Opal.to_hash(attributes)),this.action_root=this.action_root.$combine(action),this},$TreeRewriter_check_range_validity$25.$$arity=2),Opal.def($TreeRewriter_trigger_policy$27,"$check_range_validity",$TreeRewriter_check_range_validity$25=function(range){var lhs,rhs,self=this,$ret_or_1=nil;return $truthy($truthy((lhs=range.$begin_pos(),rhs=0,$ret_or_1="number"==typeof lhs&&"number"==typeof rhs?lhs<rhs:lhs["$<"](rhs)))?$ret_or_1:function(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?rhs<lhs:lhs["$>"](rhs)}(range.$end_pos(),self.source_buffer.$source().$size()))&&self.$raise($$($nesting,"IndexError"),"The range "+range.$to_range()+" is outside the bounds of the source"),range},$TreeRewriter_check_range_validity$25.$$arity=1),Opal.def($TreeRewriter_trigger_policy$27,"$enforce_policy",$TreeRewriter_enforce_policy$26=function(event){var values,$iter=$TreeRewriter_enforce_policy$26.$$p,$yield=$iter||nil;return $iter&&($TreeRewriter_enforce_policy$26.$$p=null),!this.policy["$[]"](event)["$=="]("accept")&&$truthy(values=Opal.yieldX($yield,[]))?this.$trigger_policy(event,Opal.to_hash(values)):nil},$TreeRewriter_enforce_policy$26.$$arity=1),Opal.const_set($nesting[0],"POLICY_TO_LEVEL",$hash2(["warn","raise"],{warn:"warning",raise:"error"}).$freeze()),Opal.def($TreeRewriter_trigger_policy$27,"$trigger_policy",$TreeRewriter_trigger_policy$27=function(event,arguments$){var range,$a,diag,highlights,self=this,action=nil,$ret_or_2=nil;if(null==arguments$)arguments$=$hash2([],{});else if(!arguments$.$$is_hash)throw Opal.ArgumentError.$new("expected kwargs");return null==(range=arguments$.$$smap.range)&&(range=self.$raise()),null==($a=arguments$.$$smap.conflict)&&($a=nil),arguments$=Opal.kwrestargs(arguments$,{range:!0,conflict:!0}),action=$truthy($ret_or_2=self.policy["$[]"](event))?$ret_or_2:"raise",diag=$$$($$($nesting,"Parser"),"Diagnostic").$new($$($nesting,"POLICY_TO_LEVEL")["$[]"](action),event,arguments$,range),self.diagnostics.$process(diag),$truthy($a)&&($a=$a,range=null==($a=Opal.to_ary($a))[0]?nil:$a[0],highlights=$slice.call($a,1),diag=$$$($$($nesting,"Parser"),"Diagnostic").$new($$($nesting,"POLICY_TO_LEVEL")["$[]"](action),event+"_conflict",arguments$,range,highlights),self.diagnostics.$process(diag)),action["$=="]("raise")?self.$raise($$$($$($nesting,"Parser"),"ClobberingError"),"Parser::Source::TreeRewriter detected clobbering"):nil},$TreeRewriter_trigger_policy$27.$$arity=-2),nil&&"trigger_policy"}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/tree_rewriter/action"]=function(Opal){function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}function $rb_gt(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?rhs<lhs:lhs["$>"](rhs)}function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}function $rb_ge(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?rhs<=lhs:lhs["$>="](rhs)}Opal.top;var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$hash2=Opal.hash2,$truthy=Opal.truthy,$send=Opal.send;return Opal.add_stubs(["$attr_reader","$freeze","$empty?","$do_combine","$==","$<<","$begin","$concat","$flat_map","$to_proc","$end","$!","$insert_before","$insert_after","$replacement","$raise","$insertion?","$with","$begin_pos","$range","$first","$children","$end_pos","$last","$new","$+","$map","$moved","$protected","$swallow","$class","$merge","$place_in_hierarchy","$analyse_hierarchy","$[]","$fuse_deletions","$combine_children","$inject","$size","$bsearch","$bsearch_child_index","$>","$-","$>=","$===","$<=>","$<=","$check_fusible","$<","$shift","$pop","$compact!","$each","$call","$call_enforcer_for_merge","$!=","$select"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($Action_swallow$27,$Action_call_enforcer_for_merge$25){var $Action_bsearch_child_index$16,$Action_swallow$27=$klass($Action_swallow$27,null,"Action");[$Action_swallow$27].concat($Action_call_enforcer_for_merge$25);return $Action_swallow$27.$$prototype.insert_before=$Action_swallow$27.$$prototype.insert_after=$Action_swallow$27.$$prototype.children=$Action_swallow$27.$$prototype.replacement=$Action_swallow$27.$$prototype.range=$Action_swallow$27.$$prototype.enforcer=nil,$Action_swallow$27.$attr_reader("range","replacement","insert_before","insert_after"),Opal.def($Action_swallow$27,"$initialize",$Action_call_enforcer_for_merge$25=function(range,enforcer,children){var insert_before,replacement,$a;if(null==children)children=$hash2([],{});else if(!children.$$is_hash)throw Opal.ArgumentError.$new("expected kwargs");return null==(insert_before=children.$$smap.insert_before)&&(insert_before=""),null==(replacement=children.$$smap.replacement)&&(replacement=nil),null==($a=children.$$smap.insert_after)&&($a=""),null==(children=children.$$smap.children)&&(children=[]),$a=[range,enforcer,children.$freeze(),insert_before.$freeze(),replacement,$a.$freeze()],this.range=$a[0],this.enforcer=$a[1],this.children=$a[2],this.insert_before=$a[3],this.replacement=$a[4],this.insert_after=$a[5],this.$freeze()},$Action_call_enforcer_for_merge$25.$$arity=-3),Opal.def($Action_swallow$27,"$combine",$Action_call_enforcer_for_merge$25=function(action){return $truthy(action["$empty?"]())?this:this.$do_combine(action)},$Action_call_enforcer_for_merge$25.$$arity=1),Opal.def($Action_swallow$27,"$empty?",$Action_call_enforcer_for_merge$25=function(){var $ret_or_1,$ret_or_4,$ret_or_5,self=this,$ret_or_2=nil,$ret_or_3=nil;return $truthy($ret_or_1=$truthy($ret_or_2=$truthy($ret_or_3=self.insert_before["$empty?"]())?self.insert_after["$empty?"]():$ret_or_3)?self.children["$empty?"]():$ret_or_2)?$truthy($ret_or_4=self.replacement["$=="](nil))?$ret_or_4:$truthy($ret_or_5=self.replacement["$empty?"]())?self.range["$empty?"]():$ret_or_5:$ret_or_1},$Action_call_enforcer_for_merge$25.$$arity=0),Opal.def($Action_swallow$27,"$ordered_replacements",$Action_call_enforcer_for_merge$25=function(){var reps=nil,reps=[];return $truthy(this.insert_before["$empty?"]())||reps["$<<"]([this.range.$begin(),this.insert_before]),$truthy(this.replacement)&&reps["$<<"]([this.range,this.replacement]),reps.$concat($send(this.children,"flat_map",[],"ordered_replacements".$to_proc())),$truthy(this.insert_after["$empty?"]())||reps["$<<"]([this.range.$end(),this.insert_after]),reps},$Action_call_enforcer_for_merge$25.$$arity=0),Opal.def($Action_swallow$27,"$nested_actions",$Action_call_enforcer_for_merge$25=function(){var self=this,actions=nil,$ret_or_6=nil,actions=[];return $truthy($truthy($ret_or_6=self.insert_before["$empty?"]()["$!"]())?$ret_or_6:self.insert_after["$empty?"]()["$!"]())&&actions["$<<"](["wrap",self.range,self.insert_before,self.insert_after]),$truthy(self.replacement)&&actions["$<<"](["replace",self.range,self.replacement]),actions.$concat($send(self.children,"flat_map",[],"nested_actions".$to_proc()))},$Action_call_enforcer_for_merge$25.$$arity=0),Opal.def($Action_swallow$27,"$insertion?",$Action_call_enforcer_for_merge$25=function(){var $ret_or_7,$ret_or_9,self=this,$ret_or_8=nil;return $truthy($ret_or_7=$truthy($ret_or_8=self.$insert_before()["$empty?"]()["$!"]())?$ret_or_8:self.$insert_after()["$empty?"]()["$!"]())?$ret_or_7:$truthy($ret_or_9=self.$replacement())?self.$replacement()["$empty?"]()["$!"]():$ret_or_9},$Action_call_enforcer_for_merge$25.$$arity=0),Opal.def($Action_swallow$27,"$contract",$Action_call_enforcer_for_merge$25=function(){var range;return $truthy(this["$empty?"]())&&this.$raise("Empty actions can not be contracted"),$truthy(this["$insertion?"]())?this:(range=this.range.$with($hash2(["begin_pos","end_pos"],{begin_pos:this.$children().$first().$range().$begin_pos(),end_pos:this.$children().$last().$range().$end_pos()})),this.$with($hash2(["range"],{range:range})))},$Action_call_enforcer_for_merge$25.$$arity=0),Opal.def($Action_swallow$27,"$moved",$Action_call_enforcer_for_merge$25=function(source_buffer,offset){var $$9,moved_range=$$$($$$($$$("::","Parser"),"Source"),"Range").$new(source_buffer,$rb_plus(this.range.$begin_pos(),offset),$rb_plus(this.range.$end_pos(),offset));return this.$with($hash2(["range","children"],{range:moved_range,children:$send(this.$children(),"map",[],(($$9=function(child){null==$$9.$$s||$$9.$$s;return null==child&&(child=nil),child.$moved(source_buffer,offset)}).$$s=this,$$9.$$arity=1,$$9))}))},$Action_call_enforcer_for_merge$25.$$arity=2),$Action_swallow$27.$protected(),$Action_swallow$27.$attr_reader("children"),Opal.def($Action_swallow$27,"$with",$Action_call_enforcer_for_merge$25=function(insert_after){var range,enforcer,children,insert_before,replacement;if(null==insert_after)insert_after=$hash2([],{});else if(!insert_after.$$is_hash)throw Opal.ArgumentError.$new("expected kwargs");return null==(range=insert_after.$$smap.range)&&(range=this.range),null==(enforcer=insert_after.$$smap.enforcer)&&(enforcer=this.enforcer),null==(children=insert_after.$$smap.children)&&(children=this.children),null==(insert_before=insert_after.$$smap.insert_before)&&(insert_before=this.insert_before),null==(replacement=insert_after.$$smap.replacement)&&(replacement=this.replacement),null==(insert_after=insert_after.$$smap.insert_after)&&(insert_after=this.insert_after),$truthy(replacement)&&(children=this.$swallow(children)),this.$class().$new(range,enforcer,$hash2(["children","insert_before","replacement","insert_after"],{children:children,insert_before:insert_before,replacement:replacement,insert_after:insert_after}))},$Action_call_enforcer_for_merge$25.$$arity=-1),Opal.def($Action_swallow$27,"$do_combine",$Action_call_enforcer_for_merge$25=function(action){return action.$range()["$=="](this.range)?this.$merge(action):this.$place_in_hierarchy(action)},$Action_call_enforcer_for_merge$25.$$arity=1),Opal.def($Action_swallow$27,"$place_in_hierarchy",$Action_call_enforcer_for_merge$25=function(action){var extra_sibbling,self=this,family=nil,family=self.$analyse_hierarchy(action);return $truthy(family["$[]"]("fusible"))?self.$fuse_deletions(action,family["$[]"]("fusible"),[].concat(Opal.to_a(family["$[]"]("sibbling_left"))).concat(Opal.to_a(family["$[]"]("child"))).concat(Opal.to_a(family["$[]"]("sibbling_right")))):(extra_sibbling=$truthy(family["$[]"]("parent"))?family["$[]"]("parent").$do_combine(action):$truthy(family["$[]"]("child"))?action.$with($hash2(["children","enforcer"],{children:family["$[]"]("child"),enforcer:self.enforcer})).$combine_children(action.$children()):action,self.$with($hash2(["children"],{children:[].concat(Opal.to_a(family["$[]"]("sibbling_left"))).concat([extra_sibbling]).concat(Opal.to_a(family["$[]"]("sibbling_right")))})))},$Action_call_enforcer_for_merge$25.$$arity=1),Opal.def($Action_swallow$27,"$combine_children",$Action_call_enforcer_for_merge$25=function(more_children){var $$14;return $send(more_children,"inject",[this],(($$14=function(parent,new_child){null==$$14.$$s||$$14.$$s;return null==parent&&(parent=nil),null==new_child&&(new_child=nil),parent.$place_in_hierarchy(new_child)}).$$s=this,$$14.$$arity=2,$$14))},$Action_call_enforcer_for_merge$25.$$arity=1),Opal.def($Action_swallow$27,"$fuse_deletions",$Action_call_enforcer_for_merge$25=function(action,fusible,other_sibblings){var without_fusible=nil,without_fusible=this.$with($hash2(["children"],{children:other_sibblings})),fused_range=$send([action].concat(Opal.to_a(fusible)),"map",[],"range".$to_proc()).$inject("join"),fused_deletion=action.$with($hash2(["range"],{range:fused_range}));return without_fusible.$do_combine(fused_deletion)},$Action_call_enforcer_for_merge$25.$$arity=3),Opal.def($Action_swallow$27,"$bsearch_child_index",$Action_bsearch_child_index$16=function(from){var $$17,size,$ret_or_10,$iter=$Action_bsearch_child_index$16.$$p,$yield=$iter||nil;return $iter&&($Action_bsearch_child_index$16.$$p=null),null==from&&(from=0),size=this.children.$size(),$truthy($ret_or_10=$send(Opal.Range.$new(from,size,!0),"bsearch",[],(($$17=function(i){var self=null==$$17.$$s?this:$$17.$$s;return null==self.children&&(self.children=nil),null==i&&(i=nil),Opal.yield1($yield,self.children["$[]"](i))}).$$s=this,$$17.$$arity=1,$$17)))?$ret_or_10:size},$Action_bsearch_child_index$16.$$arity=-1),Opal.def($Action_swallow$27,"$analyse_hierarchy",$Action_call_enforcer_for_merge$25=function(action){var $$19,$$20,overlap_left,overlap_right,$ret_or_11,$ret_or_12,r=nil,left_index=nil,right_index=nil,lhs=nil,rhs=nil,parent=nil,contained=nil,fusible=nil,r=action.$range(),start=(left_index=$send(this,"bsearch_child_index",[],(($$19=function(child){null==$$19.$$s||$$19.$$s;return null==child&&(child=nil),$rb_gt(child.$range().$end_pos(),r.$begin_pos())}).$$s=this,$$19.$$arity=1,$$19)))["$=="](0)?0:$rb_minus(left_index,1),lhs=$rb_minus(right_index=$send(this,"bsearch_child_index",[start],(($$20=function(child){null==$$20.$$s||$$20.$$s;return null==child&&(child=nil),$rb_ge(child.$range().$begin_pos(),r.$end_pos())}).$$s=this,$$20.$$arity=1,$$20)),left_index);return 0["$==="](rhs=lhs)||((-1)["$==="](rhs)?(left_index=$rb_minus(left_index,1),right_index=$rb_plus(right_index,1),parent=this.children["$[]"](left_index)):(overlap_left=this.children["$[]"](left_index).$range().$begin_pos()["$<=>"](r.$begin_pos()),overlap_right=this.children["$[]"]($rb_minus(right_index,1)).$range().$end_pos()["$<=>"](r.$end_pos()),$truthy($truthy($ret_or_11=$truthy($ret_or_12=lhs["$=="](1))?(rhs=0,"number"==typeof(lhs=overlap_left)&&"number"==typeof rhs?lhs<=rhs:lhs["$<="](rhs)):$ret_or_12)?$rb_ge(overlap_right,0):$ret_or_11)?parent=this.children["$[]"](left_index):(contained=this.children["$[]"](Opal.Range.$new(left_index,right_index,!0)),fusible=this.$check_fusible(action,function(){return $truthy((rhs=0,"number"==typeof(lhs=overlap_left)&&"number"==typeof rhs?lhs<rhs:lhs["$<"](rhs)))?contained.$shift():nil;var lhs,rhs}(),$truthy($rb_gt(overlap_right,0))?contained.$pop():nil)))),$hash2(["parent","sibbling_left","sibbling_right","fusible","child"],{parent:parent,sibbling_left:this.children["$[]"](Opal.Range.$new(0,left_index,!0)),sibbling_right:this.children["$[]"](Opal.Range.$new(right_index,this.children.$size(),!0)),fusible:fusible,child:contained})},$Action_call_enforcer_for_merge$25.$$arity=1),Opal.def($Action_swallow$27,"$check_fusible",$Action_call_enforcer_for_merge$25=function(action,$a){var $$22,fusible=Opal.slice.call(arguments,1,arguments.length);return fusible["$compact!"](),$truthy(fusible["$empty?"]())?nil:($send(fusible,"each",[],(($$22=function(child){var $$23,kind,self=null==$$22.$$s?this:$$22.$$s,$ret_or_13=nil;return null==self.enforcer&&(self.enforcer=nil),null==child&&(child=nil),kind=$truthy($truthy($ret_or_13=action["$insertion?"]())?$ret_or_13:child["$insertion?"]())?"crossing_insertions":"crossing_deletions",$send(self.enforcer,"call",[kind],(($$23=function(){null==$$23.$$s||$$23.$$s;return $hash2(["range","conflict"],{range:action.$range(),conflict:child.$range()})}).$$s=self,$$23.$$arity=0,$$23))}).$$s=this,$$22.$$arity=1,$$22)),fusible)},$Action_call_enforcer_for_merge$25.$$arity=-2),Opal.def($Action_swallow$27,"$merge",$Action_call_enforcer_for_merge$25=function(action){var self=this,$ret_or_14=nil;return self.$call_enforcer_for_merge(action),self.$with($hash2(["insert_before","replacement","insert_after"],{insert_before:""+action.$insert_before()+self.$insert_before(),replacement:$truthy($ret_or_14=action.$replacement())?$ret_or_14:self.replacement,insert_after:""+self.$insert_after()+action.$insert_after()})).$combine_children(action.$children())},$Action_call_enforcer_for_merge$25.$$arity=1),Opal.def($Action_swallow$27,"$call_enforcer_for_merge",$Action_call_enforcer_for_merge$25=function(action){var $$26;return $send(this.enforcer,"call",["different_replacements"],(($$26=function(){var self=null==$$26.$$s?this:$$26.$$s,$ret_or_15=nil,$ret_or_16=nil;return null==self.replacement&&(self.replacement=nil),null==self.range&&(self.range=nil),$truthy($truthy($ret_or_15=$truthy($ret_or_16=self.replacement)?action.$replacement():$ret_or_16)?self.replacement["$!="](action.$replacement()):$ret_or_15)?$hash2(["range","replacement","other_replacement"],{range:self.range,replacement:action.$replacement(),other_replacement:self.replacement}):nil}).$$s=this,$$26.$$arity=0,$$26))},$Action_call_enforcer_for_merge$25.$$arity=1),Opal.def($Action_swallow$27,"$swallow",$Action_swallow$27=function(children){var $$28;return $send(this.enforcer,"call",["swallowed_insertions"],(($$28=function(){var self=null==$$28.$$s?this:$$28.$$s,insertions=nil;return null==self.range&&(self.range=nil),insertions=$send(children,"select",[],"insertion?".$to_proc()),$truthy(insertions["$empty?"]())?nil:$hash2(["range","conflict"],{range:self.range,conflict:$send(insertions,"map",[],"range".$to_proc())})}).$$s=this,$$28.$$arity=0,$$28)),[]},$Action_swallow$27.$$arity=1),nil&&"swallow"}($$($nesting,"TreeRewriter"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$module=(Opal.$$$,Opal.$$,Opal.module),$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$send=Opal.send,$truthy=Opal.truthy,$hash2=Opal.hash2,$range=Opal.range;return Opal.add_stubs(["$attr_reader","$freeze","$line","$alias_method","$column","$last_line","$last_column","$with","$update_expression","$==","$class","$reduce","$map","$instance_variables","$instance_variable_get","$send","$inject","$to_sym","$[]","$[]=","$-","$protected","$tap","$dup","$to_proc"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($Map_update_expression$15,$Map_to_hash$12){var $Map_initialize_copy$2,$Map_with$14,$Map_update_expression$15=$klass($Map_update_expression$15,null,"Map");[$Map_update_expression$15].concat($Map_to_hash$12);return $Map_update_expression$15.$$prototype.node=$Map_update_expression$15.$$prototype.expression=nil,$Map_update_expression$15.$attr_reader("node"),$Map_update_expression$15.$attr_reader("expression"),Opal.def($Map_update_expression$15,"$initialize",$Map_to_hash$12=function(expression){return this.expression=expression},$Map_to_hash$12.$$arity=1),Opal.def($Map_update_expression$15,"$initialize_copy",$Map_initialize_copy$2=function(other){var $zuper_ii,$iter=$Map_initialize_copy$2.$$p,$zuper=nil,$zuper_i=nil;for($iter&&($Map_initialize_copy$2.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return $send2(this,$find_super(this,"initialize_copy",$Map_initialize_copy$2,!1,!0),"initialize_copy",$zuper,$iter),this.node=nil},$Map_initialize_copy$2.$$arity=1),Opal.def($Map_update_expression$15,"$node=",$Map_to_hash$12=function(node){return this.node=node,this.$freeze(),this.node},$Map_to_hash$12.$$arity=1),Opal.def($Map_update_expression$15,"$line",$Map_to_hash$12=function(){return this.expression.$line()},$Map_to_hash$12.$$arity=0),$Map_update_expression$15.$alias_method("first_line","line"),Opal.def($Map_update_expression$15,"$column",$Map_to_hash$12=function(){return this.expression.$column()},$Map_to_hash$12.$$arity=0),Opal.def($Map_update_expression$15,"$last_line",$Map_to_hash$12=function(){return this.expression.$last_line()},$Map_to_hash$12.$$arity=0),Opal.def($Map_update_expression$15,"$last_column",$Map_to_hash$12=function(){return this.expression.$last_column()},$Map_to_hash$12.$$arity=0),Opal.def($Map_update_expression$15,"$with_expression",$Map_to_hash$12=function(expression_l){var $$9;return $send(this,"with",[],(($$9=function(map){null==$$9.$$s||$$9.$$s;return null==map&&(map=nil),map.$update_expression(expression_l)}).$$s=this,$$9.$$arity=1,$$9))},$Map_to_hash$12.$$arity=1),Opal.def($Map_update_expression$15,"$==",$Map_to_hash$12=function(other){var $$11,$ret_or_1;return $truthy($ret_or_1=other.$class()["$=="](this.$class()))?$send(this.$instance_variables(),"map",[],(($$11=function(ivar){var self=null==$$11.$$s?this:$$11.$$s;return null==ivar&&(ivar=nil),self.$instance_variable_get(ivar)["$=="](other.$send("instance_variable_get",ivar))}).$$s=this,$$11.$$arity=1,$$11)).$reduce("&"):$ret_or_1},$Map_to_hash$12.$$arity=1),Opal.def($Map_update_expression$15,"$to_hash",$Map_to_hash$12=function(){var $$13;return $send(this.$instance_variables(),"inject",[$hash2([],{})],(($$13=function(hash,rhs){var self=null==$$13.$$s?this:$$13.$$s,lhs=nil;return null==hash&&(hash=nil),null==rhs&&(rhs=nil),rhs.$to_sym()["$=="]("@node")||(lhs=[rhs["$[]"]($range(1,-1,!1)).$to_sym(),self.$instance_variable_get(rhs)],$send(hash,"[]=",Opal.to_a(lhs)),rhs=1,"number"==typeof(lhs=lhs.length)&&"number"==typeof rhs||lhs["$-"](rhs)),hash}).$$s=this,$$13.$$arity=2,$$13))},$Map_to_hash$12.$$arity=0),$Map_update_expression$15.$protected(),Opal.def($Map_update_expression$15,"$with",$Map_with$14=function(){var $iter=$Map_with$14.$$p,block=$iter||nil;return $iter&&($Map_with$14.$$p=null),$iter&&($Map_with$14.$$p=null),$send(this.$dup(),"tap",[],block.$to_proc())},$Map_with$14.$$arity=0),Opal.def($Map_update_expression$15,"$update_expression",$Map_update_expression$15=function(expression_l){return this.expression=expression_l},$Map_update_expression$15.$$arity=1),nil&&"update_expression"}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/operator"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super;return Opal.add_stubs(["$attr_reader"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($base,self,$parent_nesting){var $Operator_initialize$1,self=$klass($base,self,"Operator");[self].concat($parent_nesting);return self.$attr_reader("operator"),Opal.def(self,"$initialize",$Operator_initialize$1=function(operator,expression){var $iter=$Operator_initialize$1.$$p;return $iter&&($Operator_initialize$1.$$p=null),this.operator=operator,$send2(this,$find_super(this,"initialize",$Operator_initialize$1,!1,!0),"initialize",[expression],null)},$Operator_initialize$1.$$arity=2),nil&&"initialize"}($$($nesting,"Map"),$$($nesting,"Map"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/collection"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super;return Opal.add_stubs(["$attr_reader"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($base,self,$parent_nesting){var $Collection_initialize$1,self=$klass($base,self,"Collection");[self].concat($parent_nesting);return self.$attr_reader("begin"),self.$attr_reader("end"),Opal.def(self,"$initialize",$Collection_initialize$1=function(begin_l,$a,expression_l){var $iter=$Collection_initialize$1.$$p;return $iter&&($Collection_initialize$1.$$p=null),$a=[begin_l,$a],this.begin=$a[0],this.end=$a[1],$send2(this,$find_super(this,"initialize",$Collection_initialize$1,!1,!0),"initialize",[expression_l],null)},$Collection_initialize$1.$$arity=3),nil&&"initialize"}($$($nesting,"Map"),$$($nesting,"Map"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/constant"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$send=Opal.send;return Opal.add_stubs(["$attr_reader","$with","$update_operator","$protected"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($base,$Constant_update_operator$4,$Constant_with_operator$2){var $Constant_initialize$1,$Constant_update_operator$4=$klass($base,$Constant_update_operator$4,"Constant");[$Constant_update_operator$4].concat($Constant_with_operator$2);return $Constant_update_operator$4.$attr_reader("double_colon"),$Constant_update_operator$4.$attr_reader("name"),$Constant_update_operator$4.$attr_reader("operator"),Opal.def($Constant_update_operator$4,"$initialize",$Constant_initialize$1=function(double_colon,$a,expression){var $iter=$Constant_initialize$1.$$p;return $iter&&($Constant_initialize$1.$$p=null),$a=[double_colon,$a],this.double_colon=$a[0],this.name=$a[1],$send2(this,$find_super(this,"initialize",$Constant_initialize$1,!1,!0),"initialize",[expression],null)},$Constant_initialize$1.$$arity=3),Opal.def($Constant_update_operator$4,"$with_operator",$Constant_with_operator$2=function(operator_l){var $$3;return $send(this,"with",[],(($$3=function(map){null==$$3.$$s||$$3.$$s;return null==map&&(map=nil),map.$update_operator(operator_l)}).$$s=this,$$3.$$arity=1,$$3))},$Constant_with_operator$2.$$arity=1),$Constant_update_operator$4.$protected(),Opal.def($Constant_update_operator$4,"$update_operator",$Constant_update_operator$4=function(operator_l){return this.operator=operator_l},$Constant_update_operator$4.$$arity=1),nil&&"update_operator"}($$($nesting,"Map"),$$($nesting,"Map"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/variable"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$send=Opal.send;return Opal.add_stubs(["$attr_reader","$with","$update_operator","$protected"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($base,$Variable_update_operator$4,$Variable_with_operator$2){var $Variable_initialize$1,$Variable_update_operator$4=$klass($base,$Variable_update_operator$4,"Variable");[$Variable_update_operator$4].concat($Variable_with_operator$2);return $Variable_update_operator$4.$attr_reader("name"),$Variable_update_operator$4.$attr_reader("operator"),Opal.def($Variable_update_operator$4,"$initialize",$Variable_initialize$1=function(name_l,expression_l){var $iter=$Variable_initialize$1.$$p;return $iter&&($Variable_initialize$1.$$p=null),null==expression_l&&(expression_l=name_l),this.name=name_l,$send2(this,$find_super(this,"initialize",$Variable_initialize$1,!1,!0),"initialize",[expression_l],null)},$Variable_initialize$1.$$arity=-2),Opal.def($Variable_update_operator$4,"$with_operator",$Variable_with_operator$2=function(operator_l){var $$3;return $send(this,"with",[],(($$3=function(map){null==$$3.$$s||$$3.$$s;return null==map&&(map=nil),map.$update_operator(operator_l)}).$$s=this,$$3.$$arity=1,$$3))},$Variable_with_operator$2.$$arity=1),$Variable_update_operator$4.$protected(),Opal.def($Variable_update_operator$4,"$update_operator",$Variable_update_operator$4=function(operator_l){return this.operator=operator_l},$Variable_update_operator$4.$$arity=1),nil&&"update_operator"}($$($nesting,"Map"),$$($nesting,"Map"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/keyword"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super;return Opal.add_stubs(["$attr_reader"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($base,self,$parent_nesting){var $Keyword_initialize$1,self=$klass($base,self,"Keyword");[self].concat($parent_nesting);return self.$attr_reader("keyword"),self.$attr_reader("begin"),self.$attr_reader("end"),Opal.def(self,"$initialize",$Keyword_initialize$1=function(keyword_l,begin_l,$a,expression_l){var $iter=$Keyword_initialize$1.$$p;return $iter&&($Keyword_initialize$1.$$p=null),this.keyword=keyword_l,$a=[begin_l,$a],this.begin=$a[0],this.end=$a[1],$send2(this,$find_super(this,"initialize",$Keyword_initialize$1,!1,!0),"initialize",[expression_l],null)},$Keyword_initialize$1.$$arity=4),nil&&"initialize"}($$($nesting,"Map"),$$($nesting,"Map"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/definition"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super;return Opal.add_stubs(["$attr_reader","$join"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($base,self,$parent_nesting){var $Definition_initialize$1,self=$klass($base,self,"Definition");[self].concat($parent_nesting);return self.$$prototype.keyword=self.$$prototype.end=nil,self.$attr_reader("keyword"),self.$attr_reader("operator"),self.$attr_reader("name"),self.$attr_reader("end"),Opal.def(self,"$initialize",$Definition_initialize$1=function(keyword_l,operator_l,name_l,end_l){var $iter=$Definition_initialize$1.$$p;return $iter&&($Definition_initialize$1.$$p=null),this.keyword=keyword_l,this.operator=operator_l,this.name=name_l,this.end=end_l,$send2(this,$find_super(this,"initialize",$Definition_initialize$1,!1,!0),"initialize",[this.keyword.$join(this.end)],null)},$Definition_initialize$1.$$arity=4),nil&&"initialize"}($$($nesting,"Map"),$$($nesting,"Map"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/method_definition"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$truthy=Opal.truthy;return Opal.add_stubs(["$attr_reader","$join"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($base,self,$parent_nesting){var $MethodDefinition_initialize$1,self=$klass($base,self,"MethodDefinition");[self].concat($parent_nesting);return self.$$prototype.keyword=nil,self.$attr_reader("keyword"),self.$attr_reader("operator"),self.$attr_reader("name"),self.$attr_reader("end"),self.$attr_reader("assignment"),Opal.def(self,"$initialize",$MethodDefinition_initialize$1=function(keyword_l,operator_l,name_l,end_l,assignment_l,body_l){var $iter=$MethodDefinition_initialize$1.$$p,$ret_or_1=nil;return $iter&&($MethodDefinition_initialize$1.$$p=null),this.keyword=keyword_l,this.operator=operator_l,this.name=name_l,this.end=end_l,this.assignment=assignment_l,$send2(this,$find_super(this,"initialize",$MethodDefinition_initialize$1,!1,!0),"initialize",[this.keyword.$join($truthy($ret_or_1=end_l)?$ret_or_1:body_l)],null)},$MethodDefinition_initialize$1.$$arity=6),nil&&"initialize"}($$($nesting,"Map"),$$($nesting,"Map"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/send"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$send=Opal.send;return Opal.add_stubs(["$attr_reader","$with","$update_operator","$protected"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($base,$Send_update_operator$4,$Send_with_operator$2){var $Send_initialize$1,$Send_update_operator$4=$klass($base,$Send_update_operator$4,"Send");[$Send_update_operator$4].concat($Send_with_operator$2);return $Send_update_operator$4.$attr_reader("dot"),$Send_update_operator$4.$attr_reader("selector"),$Send_update_operator$4.$attr_reader("operator"),$Send_update_operator$4.$attr_reader("begin"),$Send_update_operator$4.$attr_reader("end"),Opal.def($Send_update_operator$4,"$initialize",$Send_initialize$1=function(dot_l,selector_l,begin_l,$a,expression_l){var $iter=$Send_initialize$1.$$p;return $iter&&($Send_initialize$1.$$p=null),this.dot=dot_l,this.selector=selector_l,$a=[begin_l,$a],this.begin=$a[0],this.end=$a[1],$send2(this,$find_super(this,"initialize",$Send_initialize$1,!1,!0),"initialize",[expression_l],null)},$Send_initialize$1.$$arity=5),Opal.def($Send_update_operator$4,"$with_operator",$Send_with_operator$2=function(operator_l){var $$3;return $send(this,"with",[],(($$3=function(map){null==$$3.$$s||$$3.$$s;return null==map&&(map=nil),map.$update_operator(operator_l)}).$$s=this,$$3.$$arity=1,$$3))},$Send_with_operator$2.$$arity=1),$Send_update_operator$4.$protected(),Opal.def($Send_update_operator$4,"$update_operator",$Send_update_operator$4=function(operator_l){return this.operator=operator_l},$Send_update_operator$4.$$arity=1),nil&&"update_operator"}($$($nesting,"Map"),$$($nesting,"Map"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/index"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$send=Opal.send;return Opal.add_stubs(["$attr_reader","$with","$update_operator","$protected"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($base,$Index_update_operator$4,$Index_with_operator$2){var $Index_initialize$1,$Index_update_operator$4=$klass($base,$Index_update_operator$4,"Index");[$Index_update_operator$4].concat($Index_with_operator$2);return $Index_update_operator$4.$attr_reader("begin"),$Index_update_operator$4.$attr_reader("end"),$Index_update_operator$4.$attr_reader("operator"),Opal.def($Index_update_operator$4,"$initialize",$Index_initialize$1=function(begin_l,$a,expression_l){var $iter=$Index_initialize$1.$$p;return $iter&&($Index_initialize$1.$$p=null),$a=[begin_l,$a],this.begin=$a[0],this.end=$a[1],this.operator=nil,$send2(this,$find_super(this,"initialize",$Index_initialize$1,!1,!0),"initialize",[expression_l],null)},$Index_initialize$1.$$arity=3),Opal.def($Index_update_operator$4,"$with_operator",$Index_with_operator$2=function(operator_l){var $$3;return $send(this,"with",[],(($$3=function(map){null==$$3.$$s||$$3.$$s;return null==map&&(map=nil),map.$update_operator(operator_l)}).$$s=this,$$3.$$arity=1,$$3))},$Index_with_operator$2.$$arity=1),$Index_update_operator$4.$protected(),Opal.def($Index_update_operator$4,"$update_operator",$Index_update_operator$4=function(operator_l){return this.operator=operator_l},$Index_update_operator$4.$$arity=1),nil&&"update_operator"}($$($nesting,"Map"),$$($nesting,"Map"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/condition"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super;return Opal.add_stubs(["$attr_reader"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($base,self,$parent_nesting){var $Condition_initialize$1,self=$klass($base,self,"Condition");[self].concat($parent_nesting);return self.$attr_reader("keyword"),self.$attr_reader("begin"),self.$attr_reader("else"),self.$attr_reader("end"),Opal.def(self,"$initialize",$Condition_initialize$1=function(keyword_l,begin_l,else_l,$a,expression_l){var $iter=$Condition_initialize$1.$$p;return $iter&&($Condition_initialize$1.$$p=null),this.keyword=keyword_l,$a=[begin_l,else_l,$a],this.begin=$a[0],this.else=$a[1],this.end=$a[2],$send2(this,$find_super(this,"initialize",$Condition_initialize$1,!1,!0),"initialize",[expression_l],null)},$Condition_initialize$1.$$arity=5),nil&&"initialize"}($$($nesting,"Map"),$$($nesting,"Map"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/ternary"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super;return Opal.add_stubs(["$attr_reader"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($base,self,$parent_nesting){var $Ternary_initialize$1,self=$klass($base,self,"Ternary");[self].concat($parent_nesting);return self.$attr_reader("question"),self.$attr_reader("colon"),Opal.def(self,"$initialize",$Ternary_initialize$1=function(question_l,$a,expression_l){var $iter=$Ternary_initialize$1.$$p;return $iter&&($Ternary_initialize$1.$$p=null),$a=[question_l,$a],this.question=$a[0],this.colon=$a[1],$send2(this,$find_super(this,"initialize",$Ternary_initialize$1,!1,!0),"initialize",[expression_l],null)},$Ternary_initialize$1.$$arity=3),nil&&"initialize"}($$($nesting,"Map"),$$($nesting,"Map"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/for"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super;return Opal.add_stubs(["$attr_reader"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($base,self,$parent_nesting){var $For_initialize$1,self=$klass($base,self,"For");[self].concat($parent_nesting);return self.$attr_reader("keyword","in"),self.$attr_reader("begin","end"),Opal.def(self,"$initialize",$For_initialize$1=function(keyword_l,$a,begin_l,end_l,expression_l){var $iter=$For_initialize$1.$$p;return $iter&&($For_initialize$1.$$p=null),$a=[keyword_l,$a],this.keyword=$a[0],this.in=$a[1],$a=[begin_l,end_l],this.begin=$a[0],this.end=$a[1],$send2(this,$find_super(this,"initialize",$For_initialize$1,!1,!0),"initialize",[expression_l],null)},$For_initialize$1.$$arity=5),nil&&"initialize"}($$($nesting,"Map"),$$($nesting,"Map"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/rescue_body"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super;return Opal.add_stubs(["$attr_reader"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($base,self,$parent_nesting){var $RescueBody_initialize$1,self=$klass($base,self,"RescueBody");[self].concat($parent_nesting);return self.$attr_reader("keyword"),self.$attr_reader("assoc"),self.$attr_reader("begin"),Opal.def(self,"$initialize",$RescueBody_initialize$1=function(keyword_l,assoc_l,begin_l,expression_l){var $iter=$RescueBody_initialize$1.$$p;return $iter&&($RescueBody_initialize$1.$$p=null),this.keyword=keyword_l,this.assoc=assoc_l,this.begin=begin_l,$send2(this,$find_super(this,"initialize",$RescueBody_initialize$1,!1,!0),"initialize",[expression_l],null)},$RescueBody_initialize$1.$$arity=4),nil&&"initialize"}($$($nesting,"Map"),$$($nesting,"Map"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/heredoc"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super;return Opal.add_stubs(["$attr_reader"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($base,self,$parent_nesting){var $Heredoc_initialize$1,self=$klass($base,self,"Heredoc");[self].concat($parent_nesting);return self.$attr_reader("heredoc_body"),self.$attr_reader("heredoc_end"),Opal.def(self,"$initialize",$Heredoc_initialize$1=function(begin_l,body_l,end_l){var $iter=$Heredoc_initialize$1.$$p;return $iter&&($Heredoc_initialize$1.$$p=null),this.heredoc_body=body_l,this.heredoc_end=end_l,$send2(this,$find_super(this,"initialize",$Heredoc_initialize$1,!1,!0),"initialize",[begin_l],null)},$Heredoc_initialize$1.$$arity=3),nil&&"initialize"}($$($nesting,"Map"),$$($nesting,"Map"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/objc_kwarg"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super;return Opal.add_stubs(["$attr_reader"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Source")].concat($nesting);return function($base,self,$parent_nesting){var $ObjcKwarg_initialize$1,self=$klass($base,self,"ObjcKwarg");[self].concat($parent_nesting);return self.$attr_reader("keyword"),self.$attr_reader("operator"),self.$attr_reader("argument"),Opal.def(self,"$initialize",$ObjcKwarg_initialize$1=function(keyword_l,operator_l,$a,expression_l){var $iter=$ObjcKwarg_initialize$1.$$p;return $iter&&($ObjcKwarg_initialize$1.$$p=null),$a=[keyword_l,operator_l,$a],this.keyword=$a[0],this.operator=$a[1],this.argument=$a[2],$send2(this,$find_super(this,"initialize",$ObjcKwarg_initialize$1,!1,!0),"initialize",[expression_l],null)},$ObjcKwarg_initialize$1.$$arity=4),nil&&"initialize"}($$($nesting,"Map"),$$($nesting,"Map"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/syntax_error"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super;return Opal.add_stubs(["$attr_reader","$message"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,self,$parent_nesting){var $SyntaxError_initialize$1,self=$klass($base,self,"SyntaxError");[self].concat($parent_nesting);return self.$attr_reader("diagnostic"),Opal.def(self,"$initialize",$SyntaxError_initialize$1=function(diagnostic){var $iter=$SyntaxError_initialize$1.$$p;return $iter&&($SyntaxError_initialize$1.$$p=null),this.diagnostic=diagnostic,$send2(this,$find_super(this,"initialize",$SyntaxError_initialize$1,!1,!0),"initialize",[diagnostic.$message()],null)},$SyntaxError_initialize$1.$$arity=1),nil&&"initialize"}($nesting[0],$$($nesting,"StandardError"),$nesting)}($nesting[0],$nesting)},Opal.modules["parser/clobbering_error"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass;return function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,$super,$parent_nesting){[$klass($base,$super,"ClobberingError")].concat($parent_nesting);return nil}($nesting[0],$$($nesting,"RuntimeError"),$nesting)}($nesting[0],$nesting)},Opal.modules["parser/diagnostic"]=function(Opal){function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}function $rb_times(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs*rhs:lhs["$*"](rhs)}Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$hash2=Opal.hash2,$send=Opal.send;return Opal.add_stubs(["$freeze","$attr_reader","$include?","$raise","$join","$inspect","$dup","$compile","$==","$line","$last_line","$is?","$+","$message","$render_line","$first_line_only","$last_line_only","$-","$source_buffer","$decompose_position","$end_pos","$>","$private","$source_line","$*","$length","$each","$line_range","$intersect","$column_range","$size","$[]=","$!","$>=","$map","$name","$!=","$resize","$=~","$source","$adjust"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($Diagnostic_last_line_only$8,$Diagnostic_first_line_only$7){var $Diagnostic_last_line_only$8=$klass($Diagnostic_last_line_only$8,null,"Diagnostic"),$nesting=[$Diagnostic_last_line_only$8].concat($Diagnostic_first_line_only$7);return $Diagnostic_last_line_only$8.$$prototype.reason=$Diagnostic_last_line_only$8.$$prototype.arguments=$Diagnostic_last_line_only$8.$$prototype.location=$Diagnostic_last_line_only$8.$$prototype.level=$Diagnostic_last_line_only$8.$$prototype.highlights=nil,Opal.const_set($nesting[0],"LEVELS",["note","warning","error","fatal"].$freeze()),$Diagnostic_last_line_only$8.$attr_reader("level","reason","arguments"),$Diagnostic_last_line_only$8.$attr_reader("location","highlights"),Opal.def($Diagnostic_last_line_only$8,"$initialize",$Diagnostic_first_line_only$7=function(level,reason,arguments$,location,highlights){var $ret_or_1=nil;return null==highlights&&(highlights=[]),$truthy($$($nesting,"LEVELS")["$include?"](level))||this.$raise($$($nesting,"ArgumentError"),"Diagnostic#level must be one of "+$$($nesting,"LEVELS").$join(", ")+"; "+level.$inspect()+" provided."),$truthy(location)||this.$raise("Expected a location"),this.level=level,this.reason=reason,this.arguments=($truthy($ret_or_1=arguments$)?$ret_or_1:$hash2([],{})).$dup().$freeze(),this.location=location,this.highlights=highlights.$dup().$freeze(),this.$freeze()},$Diagnostic_first_line_only$7.$$arity=-5),Opal.def($Diagnostic_last_line_only$8,"$message",$Diagnostic_first_line_only$7=function(){return $$($nesting,"Messages").$compile(this.reason,this.arguments)},$Diagnostic_first_line_only$7.$$arity=0),Opal.def($Diagnostic_last_line_only$8,"$render",$Diagnostic_first_line_only$7=function(){var last_line,last_lineno,last_column,self=this,$a=nil,rhs=nil,lhs=nil;return $truthy($truthy($a=self.location.$line()["$=="](self.location.$last_line()))?$a:self.location["$is?"]("\n"))?$rb_plus([self.location+": "+self.level+": "+self.$message()],self.$render_line(self.location)):(rhs=self.$first_line_only(self.location),last_line=self.$last_line_only(self.location),lhs=$rb_plus($rb_minus(self.location.$last_line(),self.location.$line()),1),$a=self.location.$source_buffer().$decompose_position(self.location.$end_pos()),last_lineno=null==($a=Opal.to_ary($a))[0]?nil:$a[0],last_column=null==$a[1]?nil:$a[1],$rb_plus($rb_plus([self.location+"-"+last_lineno+":"+last_column+": "+self.level+": "+self.$message()],self.$render_line(rhs,(rhs=2,"number"==typeof(lhs=lhs)&&"number"==typeof rhs?rhs<lhs:lhs["$>"](rhs)),!1)),self.$render_line(last_line,!1,!0)))},$Diagnostic_first_line_only$7.$$arity=0),$Diagnostic_last_line_only$8.$private(),Opal.def($Diagnostic_last_line_only$8,"$render_line",$Diagnostic_first_line_only$7=function(range,ellipsis,rhs){var $$5,$$6,$ret_or_3,lhs,source_line=nil,highlight_line=nil,$writer=nil;return null==ellipsis&&(ellipsis=!1),null==rhs&&(rhs=!1),source_line=range.$source_line(),highlight_line=$rb_times(" ",source_line.$length()),$send(this.highlights,"each",[],(($$5=function(highlight){var line_range,$writer;null==$$5.$$s||$$5.$$s;return null==highlight&&(highlight=nil),line_range=range.$source_buffer().$line_range(range.$line()),$truthy(highlight=highlight.$intersect(line_range))?($writer=[highlight.$column_range(),$rb_times("~",highlight.$size())],$send(highlight_line,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]):nil}).$$s=this,$$5.$$arity=1,$$5)),$truthy(range["$is?"]("\n"))?highlight_line=$rb_plus(highlight_line,"^"):($writer=$truthy($truthy($ret_or_3=rhs["$!"]())?(lhs=range.$size(),rhs=1,"number"==typeof lhs&&"number"==typeof rhs?rhs<=lhs:lhs["$>="](rhs)):$ret_or_3)?[range.$column_range(),$rb_plus("^",$rb_times("~",$rb_minus(range.$size(),1)))]:[range.$column_range(),$rb_times("~",range.$size())],$send(highlight_line,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]),$truthy(ellipsis)&&(highlight_line=$rb_plus(highlight_line,"...")),$send([source_line,highlight_line],"map",[],(($$6=function(line){null==$$6.$$s||$$6.$$s;return null==line&&(line=nil),range.$source_buffer().$name()+":"+range.$line()+": "+line}).$$s=this,$$6.$$arity=1,$$6))},$Diagnostic_first_line_only$7.$$arity=-2),Opal.def($Diagnostic_last_line_only$8,"$first_line_only",$Diagnostic_first_line_only$7=function(range){return $truthy(range.$line()["$!="](range.$last_line()))?range.$resize(range.$source()["$=~"](/\n/)):range},$Diagnostic_first_line_only$7.$$arity=1),Opal.def($Diagnostic_last_line_only$8,"$last_line_only",$Diagnostic_last_line_only$8=function(range){return $truthy(range.$line()["$!="](range.$last_line()))?range.$adjust($hash2(["begin_pos"],{begin_pos:range.$source()["$=~"](/[^\n]*$/)})):range},$Diagnostic_last_line_only$8.$$arity=1),nil&&"last_line_only"}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/diagnostic/engine"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy;return Opal.add_stubs(["$attr_accessor","$ignore?","$call","$raise?","$raise","$protected","$==","$level"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($Engine_raise$ques$4,$Engine_ignore$ques$3){var $Engine_raise$ques$4=$klass($Engine_raise$ques$4,null,"Engine"),$nesting=[$Engine_raise$ques$4].concat($Engine_ignore$ques$3);return $Engine_raise$ques$4.$$prototype.consumer=$Engine_raise$ques$4.$$prototype.ignore_warnings=$Engine_raise$ques$4.$$prototype.all_errors_are_fatal=nil,$Engine_raise$ques$4.$attr_accessor("consumer"),$Engine_raise$ques$4.$attr_accessor("all_errors_are_fatal"),$Engine_raise$ques$4.$attr_accessor("ignore_warnings"),Opal.def($Engine_raise$ques$4,"$initialize",$Engine_ignore$ques$3=function(consumer){return null==consumer&&(consumer=nil),this.consumer=consumer,this.all_errors_are_fatal=!1,this.ignore_warnings=!1},$Engine_ignore$ques$3.$$arity=-1),Opal.def($Engine_raise$ques$4,"$process",$Engine_ignore$ques$3=function(diagnostic){return $truthy(this["$ignore?"](diagnostic))||$truthy(this.consumer)&&this.consumer.$call(diagnostic),$truthy(this["$raise?"](diagnostic))&&this.$raise($$$($$($nesting,"Parser"),"SyntaxError"),diagnostic),this},$Engine_ignore$ques$3.$$arity=1),$Engine_raise$ques$4.$protected(),Opal.def($Engine_raise$ques$4,"$ignore?",$Engine_ignore$ques$3=function(diagnostic){var 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$StaticEnvironment_empty$ques$12=$klass($StaticEnvironment_empty$ques$12,null,"StaticEnvironment"),$nesting=[$StaticEnvironment_empty$ques$12].concat($StaticEnvironment_declared_anonymous_blockarg$ques$11);return $StaticEnvironment_empty$ques$12.$$prototype.stack=$StaticEnvironment_empty$ques$12.$$prototype.variables=nil,Opal.const_set($nesting[0],"FORWARD_ARGS","FORWARD_ARGS"),Opal.const_set($nesting[0],"ANONYMOUS_BLOCKARG","ANONYMOUS_BLOCKARG"),Opal.def($StaticEnvironment_empty$ques$12,"$initialize",$StaticEnvironment_declared_anonymous_blockarg$ques$11=function(){return this.$reset()},$StaticEnvironment_declared_anonymous_blockarg$ques$11.$$arity=0),Opal.def($StaticEnvironment_empty$ques$12,"$reset",$StaticEnvironment_declared_anonymous_blockarg$ques$11=function(){return 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null==lookahead&&(lookahead=nil),delimiter=self.$coerce_encoding(delimiter),$truthy($truthy($ret_or_9=self.start_delim)?self.start_delim["$=="](delimiter):$ret_or_9)?self.nesting=$rb_plus(self.nesting,1):$truthy(self["$delimiter?"](delimiter))&&(self.nesting=$rb_minus(self.nesting,1)),self.nesting["$=="](0)?($truthy(self["$words?"]())&&self.$extend_space(ts,ts),$truthy($truthy($ret_or_10=$truthy($ret_or_11=$truthy($ret_or_12=$truthy($ret_or_13=lookahead)?self.label_allowed:$ret_or_13)?lookahead["$[]"](0)["$=="]($enc(":","ASCII-8BIT")):$ret_or_12)?lookahead["$[]"](1)["$!="]($enc(":","ASCII-8BIT")):$ret_or_11)?self.start_tok["$=="]("tSTRING_BEG"):$ret_or_10)?(self.$flush_string(),self.$emit("tLABEL_END",self.end_delim,ts,$rb_plus(te,1))):$truthy(self.monolithic)?self.$emit("tSTRING",self.buffer,self.str_s,te):($truthy(self["$heredoc?"]())||self.$flush_string(),self.$emit("tSTRING_END",self.end_delim,ts,te))):nil},$Literal_emit_start_tok$24.$$arity=-4),Opal.def($Literal_emit$25,"$infer_indent_level",$Literal_emit_start_tok$24=function(line){var $$13,self=this,indent_level=nil;return $truthy(self.dedent_body["$!"]())?nil:(indent_level=0,function(){var $brk=Opal.new_brk();try{return $send(line,"each_char",[],(($$13=function(char$){var self=null==$$13.$$s?this:$$13.$$s,lhs=nil,rhs=nil;return null==self.dedent_level&&(self.dedent_level=nil),null==char$&&(char$=nil)," "["$==="](lhs=char$)?indent_level=$rb_plus(indent_level,1):"\t"["$==="](lhs)?indent_level=$rb_plus(indent_level,$rb_minus(8,indent_level["$%"](8))):($truthy($truthy(rhs=self.dedent_level["$nil?"]())?rhs:(lhs=self.dedent_level,rhs=indent_level,"number"==typeof lhs&&"number"==typeof rhs?rhs<lhs:lhs["$>"](rhs)))&&(self.dedent_level=indent_level),void Opal.brk(nil,$brk))}).$$s=self,$$13.$$brk=$brk,$$13.$$arity=1,$$13))}catch(err){if(err===$brk)return err.$v;throw err}}())},$Literal_emit_start_tok$24.$$arity=1),Opal.def($Literal_emit$25,"$start_interp_brace",$Literal_emit_start_tok$24=function(){return 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self=this,$ret_or_17=nil,str_e=$truthy($ret_or_17=self.heredoc_e)?$ret_or_17:$rb_plus(self.str_s,self.str_type.$length());return self.$emit(self.start_tok,self.str_type,self.str_s,str_e)},$Literal_emit_start_tok$24.$$arity=0),Opal.def($Literal_emit$25,"$emit",$Literal_emit$25=function(token,type,s,e){return this.lexer.$send("emit",token,type,s,e)},$Literal_emit$25.$$arity=4),nil&&"emit"}($$($nesting,"Lexer"),$nesting)}($nesting[0],$nesting)},Opal.modules["parser/lexer/stack_state"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$alias=Opal.alias;return Opal.add_stubs(["$freeze","$clear","$|","$<<","$&","$>>","$==","$[]","$to_s"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function(self,$StackState_to_s$8){self=$klass(self,null,"StackState"),[self].concat($StackState_to_s$8);return 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this.emit_lambda=!0,this.emit_procarg0=!0,this.emit_encoding=!0,this.emit_index=!0,this.emit_arg_inside_procarg0=!0,this.emit_forward_arg=!0,this.emit_kwargs=!0,this.emit_match_pattern=!0},$modernize$1.$$arity=0)}(Opal.get_singleton_class($Default_kwargs$ques$207),$nesting),$Default_kwargs$ques$207.$attr_accessor("parser"),$Default_kwargs$ques$207.$attr_accessor("emit_file_line_as_literals"),Opal.def($Default_kwargs$ques$207,"$initialize",$Default_rewrite_hash_args_to_kwargs$206=function(){return this.emit_file_line_as_literals=!0},$Default_rewrite_hash_args_to_kwargs$206.$$arity=0),Opal.def($Default_kwargs$ques$207,"$nil",$Default_rewrite_hash_args_to_kwargs$206=function(nil_t){return this.$n0("nil",this.$token_map(nil_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$true",$Default_rewrite_hash_args_to_kwargs$206=function(true_t){return this.$n0("true",this.$token_map(true_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$false",$Default_rewrite_hash_args_to_kwargs$206=function(false_t){return this.$n0("false",this.$token_map(false_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$integer",$Default_rewrite_hash_args_to_kwargs$206=function(integer_t){return this.$numeric("int",integer_t)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$float",$Default_rewrite_hash_args_to_kwargs$206=function(float_t){return this.$numeric("float",float_t)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$rational",$Default_rewrite_hash_args_to_kwargs$206=function(rational_t){return 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value=nil,operator_loc=nil,$a=[].concat(Opal.to_a(numeric)),value=null==$a[0]?nil:$a[0],operator_loc=this.$loc(unary_t),$case=this.$value(unary_t);return"+"["$==="]($case)?value=value["$+@"]():"-"["$==="]($case)&&(value=value["$-@"]()),numeric.$updated(nil,[value],$hash2(["location"],{location:$$$($$$($$($nesting,"Source"),"Map"),"Operator").$new(operator_loc,operator_loc.$join(numeric.$loc().$expression()))}))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$__LINE__",$Default_rewrite_hash_args_to_kwargs$206=function(__LINE__t){return this.$n0("__LINE__",this.$token_map(__LINE__t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$string",$Default_rewrite_hash_args_to_kwargs$206=function(string_t){return 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self=this,str=nil,$ret_or_2=nil;return $truthy(self["$collapse_string_parts?"](parts))?(str=parts.$first(),self.$n("sym",[str.$children().$first().$to_sym()],self.$collection_map(begin_t,str.$loc().$expression(),end_t))):$truthy($truthy($ret_or_2=self.parser.$version()["$=="](18))?parts["$empty?"]():$ret_or_2)?self.$diagnostic("error","empty_symbol",nil,self.$loc(begin_t).$join(self.$loc(end_t))):self.$n("dsym",[].concat(Opal.to_a(parts)),self.$collection_map(begin_t,parts,end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$xstring_compose",$Default_rewrite_hash_args_to_kwargs$206=function(begin_t,parts,end_t){return this.$n("xstr",[].concat(Opal.to_a(parts)),this.$string_map(begin_t,parts,end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$dedent_string",$Default_rewrite_hash_args_to_kwargs$206=function(node,dedent_level){var $$23,$case,dedenter=nil,str=nil,children=nil;return 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this.$n("regopt",options,this.$token_map(regopt_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$regexp_compose",$Default_rewrite_hash_args_to_kwargs$206=function(begin_t,parts,end_t,options){var e=nil;try{this.$static_regexp(parts,options)}catch($err){if(!Opal.rescue($err,[$$($nesting,"RegexpError")]))throw $err;e=$err;try{this.$diagnostic("error","invalid_regexp",$hash2(["message"],{message:e.$message()}),this.$loc(begin_t).$join(this.$loc(end_t)))}finally{Opal.pop_exception()}}return this.$n("regexp",parts["$<<"](options),this.$regexp_map(begin_t,end_t,options))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=4),Opal.def($Default_kwargs$ques$207,"$array",$Default_rewrite_hash_args_to_kwargs$206=function(begin_t,elements,end_t){return 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this.$n("array",[].concat(Opal.to_a(parts)),this.$collection_map(begin_t,parts,end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$symbols_compose",$Default_rewrite_hash_args_to_kwargs$206=function(begin_t,parts,end_t){var $$31;return parts=$send(parts,"map",[],(($$31=function(part){null==$$31.$$s||$$31.$$s;var $a,$case=nil,value=nil;return null==part&&(part=nil),$case=part.$type(),"str"["$==="]($case)?($a=[].concat(Opal.to_a(part)),value=null==$a[0]?nil:$a[0],part.$updated("sym",[value.$to_sym()])):"dstr"["$==="]($case)?part.$updated("dsym"):part}).$$s=this,$$31.$$arity=1,$$31)),this.$n("array",[].concat(Opal.to_a(parts)),this.$collection_map(begin_t,parts,end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$pair",$Default_rewrite_hash_args_to_kwargs$206=function(key,assoc_t,value){return this.$n("pair",[key,value],this.$binary_op_map(key,assoc_t,value))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$pair_list_18",$Default_rewrite_hash_args_to_kwargs$206=function(list){var $$34;return $truthy(list.$size()["$%"](2)["$!="](0))?this.$diagnostic("error","odd_hash",nil,list.$last().$loc().$expression()):$send(list.$each_slice(2),"map",[],(($$34=function(key,value){var self=null==$$34.$$s?this:$$34.$$s;return null==key&&(key=nil),null==value&&(value=nil),self.$n("pair",[key,value],self.$binary_op_map(key,nil,value))}).$$s=this,$$34.$$arity=2,$$34))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$pair_keyword",$Default_rewrite_hash_args_to_kwargs$206=function(key_t,value){var $a=this.$pair_keyword_map(key_t,value),$a=Opal.to_ary($a),key_map=null==$a[0]?nil:$a[0],pair_map=null==$a[1]?nil:$a[1],key=this.$n("sym",[this.$value(key_t).$to_sym()],key_map);return this.$n("pair",[key,value],pair_map)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$pair_quoted",$Default_rewrite_hash_args_to_kwargs$206=function(begin_t,parts,end_t,value){var pair_map,key,$a=this.$pair_quoted_map(begin_t,end_t,value),$a=Opal.to_ary($a);return end_t=null==$a[0]?nil:$a[0],pair_map=null==$a[1]?nil:$a[1],key=this.$symbol_compose(begin_t,parts,end_t),this.$n("pair",[key,value],pair_map)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=4),Opal.def($Default_kwargs$ques$207,"$pair_label",$Default_rewrite_hash_args_to_kwargs$206=function(key_t){var self=this,label=nil,value_l=self.$loc(key_t).$adjust($hash2(["end_pos"],{end_pos:-1})),label=self.$value(key_t),value=$truthy(label["$=~"](/^[[:lower:]]/))?self.$n("ident",[label.$to_sym()],$$$($$$($$($nesting,"Source"),"Map"),"Variable").$new(value_l)):self.$n("const",[nil,label.$to_sym()],$$$($$$($$($nesting,"Source"),"Map"),"Constant").$new(nil,value_l,value_l));return self.$pair_keyword(key_t,self.$accessible(value))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$kwsplat",$Default_rewrite_hash_args_to_kwargs$206=function(dstar_t,arg){return this.$n("kwsplat",[arg],this.$unary_op_map(dstar_t,arg))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$associate",$Default_rewrite_hash_args_to_kwargs$206=function(begin_t,pairs,end_t){var $$40;return $send(0,"upto",[$rb_minus(pairs.$length(),1)],(($$40=function(i){var $$41,self=null==$$40.$$s?this:$$40.$$s;return null==i&&(i=nil),$send($rb_plus(i,1),"upto",[$rb_minus(pairs.$length(),1)],(($$41=function(j){var $a,$case,self=null==$$41.$$s?this:$$41.$$s,key1=nil,key2=nil,do_warn=nil,$ret_or_3=nil;return 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this.$n("ivar",[this.$value(token).$to_sym()],this.$variable_map(token))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$gvar",$Default_rewrite_hash_args_to_kwargs$206=function(token){return this.$n("gvar",[this.$value(token).$to_sym()],this.$variable_map(token))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$cvar",$Default_rewrite_hash_args_to_kwargs$206=function(token){return this.$n("cvar",[this.$value(token).$to_sym()],this.$variable_map(token))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$back_ref",$Default_rewrite_hash_args_to_kwargs$206=function(token){return this.$n("back_ref",[this.$value(token).$to_sym()],this.$token_map(token))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$nth_ref",$Default_rewrite_hash_args_to_kwargs$206=function(token){return this.$n("nth_ref",[this.$value(token)],this.$token_map(token))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$accessible",$Default_rewrite_hash_args_to_kwargs$206=function(node){var $$52,$a,self=this,name=nil,$ret_or_4=nil;return $a=node.$type(),"__FILE__"["$==="]($a)?$truthy(self.emit_file_line_as_literals)?self.$n("str",[node.$loc().$expression().$source_buffer().$name()],node.$loc().$dup()):node:"__LINE__"["$==="]($a)?$truthy(self.emit_file_line_as_literals)?self.$n("int",[node.$loc().$expression().$line()],node.$loc().$dup()):node:"__ENCODING__"["$==="]($a)?$truthy(self.$class().$emit_encoding()["$!"]())?self.$n("const",[self.$n("const",[nil,"Encoding"],nil),"UTF_8"],node.$loc().$dup()):node:"ident"["$==="]($a)?($a=[].concat(Opal.to_a(node)),name=null==$a[0]?nil:$a[0],$truthy($send(["?","!"],"any?",[],(($$52=function(c){null==$$52.$$s||$$52.$$s;return null==c&&(c=nil),name.$to_s()["$end_with?"](c)}).$$s=self,$$52.$$arity=1,$$52)))&&self.$diagnostic("error","invalid_id_to_get",$hash2(["identifier"],{identifier:name.$to_s()}),node.$loc().$expression()),$truthy($truthy($ret_or_4=$rb_ge(self.parser.$version(),27))?self.parser.$try_declare_numparam(node):$ret_or_4)?node.$updated("lvar"):$truthy(self.parser.$static_env()["$declared?"](name))?(name.$to_s()["$=="](self.$parser().$current_arg_stack().$top())&&self.$diagnostic("error","circular_argument_reference",$hash2(["var_name"],{var_name:name.$to_s()}),node.$loc().$expression()),node.$updated("lvar")):self.$n("send",[nil,name],self.$var_send_map(node))):node},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$const",$Default_rewrite_hash_args_to_kwargs$206=function(name_t){return this.$n("const",[nil,this.$value(name_t).$to_sym()],this.$constant_map(nil,nil,name_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$const_global",$Default_rewrite_hash_args_to_kwargs$206=function(t_colon3,name_t){var cbase=this.$n0("cbase",this.$token_map(t_colon3));return this.$n("const",[cbase,this.$value(name_t).$to_sym()],this.$constant_map(cbase,t_colon3,name_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$const_fetch",$Default_rewrite_hash_args_to_kwargs$206=function(scope,t_colon2,name_t){return this.$n("const",[scope,this.$value(name_t).$to_sym()],this.$constant_map(scope,t_colon2,name_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$__ENCODING__",$Default_rewrite_hash_args_to_kwargs$206=function(__ENCODING__t){return this.$n0("__ENCODING__",this.$token_map(__ENCODING__t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$assignable",$Default_rewrite_hash_args_to_kwargs$206=function(node){var $a,self=this,$case=nil,name=nil,var_name=nil,name_loc=nil;return $case=node.$type(),"cvar"["$==="]($case)?node.$updated("cvasgn"):"ivar"["$==="]($case)?node.$updated("ivasgn"):"gvar"["$==="]($case)?node.$updated("gvasgn"):"const"["$==="]($case)?($truthy(self.parser.$context().$in_def())&&self.$diagnostic("error","dynamic_const",nil,node.$loc().$expression()),node.$updated("casgn")):"ident"["$==="]($case)?($a=[].concat(Opal.to_a(node)),name=null==$a[0]?nil:$a[0],var_name=node.$children()["$[]"](0).$to_s(),name_loc=node.$loc().$expression(),self.$check_assignment_to_numparam(var_name,name_loc),self.$check_reserved_for_numparam(var_name,name_loc),self.parser.$static_env().$declare(name),node.$updated("lvasgn")):"match_var"["$==="]($case)?($a=[].concat(Opal.to_a(node)),name=null==$a[0]?nil:$a[0],var_name=node.$children()["$[]"](0).$to_s(),name_loc=node.$loc().$expression(),self.$check_assignment_to_numparam(var_name,name_loc),self.$check_reserved_for_numparam(var_name,name_loc),node):"nil"["$==="]($case)||"self"["$==="]($case)||"true"["$==="]($case)||"false"["$==="]($case)||"__FILE__"["$==="]($case)||"__LINE__"["$==="]($case)||"__ENCODING__"["$==="]($case)?self.$diagnostic("error","invalid_assignment",nil,node.$loc().$expression()):"back_ref"["$==="]($case)||"nth_ref"["$==="]($case)?self.$diagnostic("error","backref_assignment",nil,node.$loc().$expression()):nil},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$const_op_assignable",$Default_rewrite_hash_args_to_kwargs$206=function(node){return node.$updated("casgn")},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$assign",$Default_rewrite_hash_args_to_kwargs$206=function(lhs,eql_t,rhs){return lhs["$<<"](rhs).$updated(nil,nil,$hash2(["location"],{location:lhs.$loc().$with_operator(this.$loc(eql_t)).$with_expression(this.$join_exprs(lhs,rhs))}))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$op_assign",$Default_rewrite_hash_args_to_kwargs$206=function(lhs,op_t,rhs){var self=this,$case=nil,operator=nil,source_map=nil;return $case=lhs.$type(),"gvasgn"["$==="]($case)||"ivasgn"["$==="]($case)||"lvasgn"["$==="]($case)||"cvasgn"["$==="]($case)||"casgn"["$==="]($case)||"send"["$==="]($case)||"csend"["$==="]($case)||"index"["$==="]($case)?(operator=self.$value(op_t)["$[]"]($range(0,-1,!1)).$to_sym(),source_map=lhs.$loc().$with_operator(self.$loc(op_t)).$with_expression(self.$join_exprs(lhs,rhs)),lhs.$type()["$=="]("index")&&(lhs=lhs.$updated("indexasgn")),"&&"["$==="]($case=operator)?self.$n("and_asgn",[lhs,rhs],source_map):"||"["$==="]($case)?self.$n("or_asgn",[lhs,rhs],source_map):self.$n("op_asgn",[lhs,operator,rhs],source_map)):"back_ref"["$==="]($case)||"nth_ref"["$==="]($case)?self.$diagnostic("error","backref_assignment",nil,lhs.$loc().$expression()):nil},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$multi_lhs",$Default_rewrite_hash_args_to_kwargs$206=function(begin_t,items,end_t){return this.$n("mlhs",[].concat(Opal.to_a(items)),this.$collection_map(begin_t,items,end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$multi_assign",$Default_rewrite_hash_args_to_kwargs$206=function(lhs,eql_t,rhs){return this.$n("masgn",[lhs,rhs],this.$binary_op_map(lhs,eql_t,rhs))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$def_class",$Default_rewrite_hash_args_to_kwargs$206=function(class_t,name,lt_t,superclass,body,end_t){return this.$n("class",[name,superclass,body],this.$module_definition_map(class_t,name,lt_t,end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=6),Opal.def($Default_kwargs$ques$207,"$def_sclass",$Default_rewrite_hash_args_to_kwargs$206=function(class_t,lshft_t,expr,body,end_t){return this.$n("sclass",[expr,body],this.$module_definition_map(class_t,nil,lshft_t,end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=5),Opal.def($Default_kwargs$ques$207,"$def_module",$Default_rewrite_hash_args_to_kwargs$206=function(module_t,name,body,end_t){return this.$n("module",[name,body],this.$module_definition_map(module_t,name,nil,end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=4),Opal.def($Default_kwargs$ques$207,"$def_method",$Default_rewrite_hash_args_to_kwargs$206=function(def_t,name_t,args,body,end_t){return this.$check_reserved_for_numparam(this.$value(name_t),this.$loc(name_t)),this.$n("def",[this.$value(name_t).$to_sym(),args,body],this.$definition_map(def_t,nil,name_t,end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=5),Opal.def($Default_kwargs$ques$207,"$def_endless_method",$Default_rewrite_hash_args_to_kwargs$206=function(def_t,name_t,args,assignment_t,body){return this.$check_reserved_for_numparam(this.$value(name_t),this.$loc(name_t)),this.$n("def",[this.$value(name_t).$to_sym(),args,body],this.$endless_definition_map(def_t,nil,name_t,assignment_t,body))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=5),Opal.def($Default_kwargs$ques$207,"$def_singleton",$Default_rewrite_hash_args_to_kwargs$206=function(def_t,definee,dot_t,name_t,args,body,end_t){return this.$validate_definee(definee),this.$check_reserved_for_numparam(this.$value(name_t),this.$loc(name_t)),this.$n("defs",[definee,this.$value(name_t).$to_sym(),args,body],this.$definition_map(def_t,dot_t,name_t,end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=7),Opal.def($Default_kwargs$ques$207,"$def_endless_singleton",$Default_rewrite_hash_args_to_kwargs$206=function(def_t,definee,dot_t,name_t,args,assignment_t,body){return this.$validate_definee(definee),this.$check_reserved_for_numparam(this.$value(name_t),this.$loc(name_t)),this.$n("defs",[definee,this.$value(name_t).$to_sym(),args,body],this.$endless_definition_map(def_t,dot_t,name_t,assignment_t,body))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=7),Opal.def($Default_kwargs$ques$207,"$undef_method",$Default_rewrite_hash_args_to_kwargs$206=function(undef_t,names){return this.$n("undef",[].concat(Opal.to_a(names)),this.$keyword_map(undef_t,nil,names,nil))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$alias",$Default_rewrite_hash_args_to_kwargs$206=function(alias_t,to,from){return this.$n("alias",[to,from],this.$keyword_map(alias_t,nil,[to,from],nil))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$args",$Default_rewrite_hash_args_to_kwargs$206=function(begin_t,args,end_t,check_args){var map,self=this,$ret_or_5=nil,$ret_or_6=nil;return null==check_args&&(check_args=!0),$truthy(check_args)&&(args=self.$check_duplicate_args(args)),self.$validate_no_forward_arg_after_restarg(args),map=self.$collection_map(begin_t,args,end_t),$truthy($truthy($ret_or_5=$truthy($ret_or_6=self.$class().$emit_forward_arg()["$!"]())?args.$length()["$=="](1):$ret_or_6)?args["$[]"](0).$type()["$=="]("forward_arg"):$ret_or_5)?self.$n("forward_args",[],map):self.$n("args",args,map)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=-4),Opal.def($Default_kwargs$ques$207,"$numargs",$Default_rewrite_hash_args_to_kwargs$206=function(max_numparam){return this.$n("numargs",[max_numparam],nil)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$forward_only_args",$Default_rewrite_hash_args_to_kwargs$206=function(begin_t,dots_t,end_t){var arg;return $truthy(this.$class().$emit_forward_arg())?(arg=this.$forward_arg(dots_t),this.$n("args",[arg],this.$collection_map(begin_t,[arg],end_t))):this.$n("forward_args",[],this.$collection_map(begin_t,this.$token_map(dots_t),end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$forward_arg",$Default_rewrite_hash_args_to_kwargs$206=function(dots_t){return this.$n("forward_arg",[],this.$token_map(dots_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$arg",$Default_rewrite_hash_args_to_kwargs$206=function(name_t){return this.$check_reserved_for_numparam(this.$value(name_t),this.$loc(name_t)),this.$n("arg",[this.$value(name_t).$to_sym()],this.$variable_map(name_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$optarg",$Default_rewrite_hash_args_to_kwargs$206=function(name_t,eql_t,value){return this.$check_reserved_for_numparam(this.$value(name_t),this.$loc(name_t)),this.$n("optarg",[this.$value(name_t).$to_sym(),value],this.$variable_map(name_t).$with_operator(this.$loc(eql_t)).$with_expression(this.$loc(name_t).$join(value.$loc().$expression())))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$restarg",$Default_rewrite_hash_args_to_kwargs$206=function(star_t,name_t){return null==name_t&&(name_t=nil),$truthy(name_t)?(this.$check_reserved_for_numparam(this.$value(name_t),this.$loc(name_t)),this.$n("restarg",[this.$value(name_t).$to_sym()],this.$arg_prefix_map(star_t,name_t))):this.$n0("restarg",this.$arg_prefix_map(star_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=-2),Opal.def($Default_kwargs$ques$207,"$kwarg",$Default_rewrite_hash_args_to_kwargs$206=function(name_t){return this.$check_reserved_for_numparam(this.$value(name_t),this.$loc(name_t)),this.$n("kwarg",[this.$value(name_t).$to_sym()],this.$kwarg_map(name_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$kwoptarg",$Default_rewrite_hash_args_to_kwargs$206=function(name_t,value){return this.$check_reserved_for_numparam(this.$value(name_t),this.$loc(name_t)),this.$n("kwoptarg",[this.$value(name_t).$to_sym(),value],this.$kwarg_map(name_t,value))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$kwrestarg",$Default_rewrite_hash_args_to_kwargs$206=function(dstar_t,name_t){return null==name_t&&(name_t=nil),$truthy(name_t)?(this.$check_reserved_for_numparam(this.$value(name_t),this.$loc(name_t)),this.$n("kwrestarg",[this.$value(name_t).$to_sym()],this.$arg_prefix_map(dstar_t,name_t))):this.$n0("kwrestarg",this.$arg_prefix_map(dstar_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=-2),Opal.def($Default_kwargs$ques$207,"$kwnilarg",$Default_rewrite_hash_args_to_kwargs$206=function(dstar_t,nil_t){return this.$n0("kwnilarg",this.$arg_prefix_map(dstar_t,nil_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$shadowarg",$Default_rewrite_hash_args_to_kwargs$206=function(name_t){return this.$check_reserved_for_numparam(this.$value(name_t),this.$loc(name_t)),this.$n("shadowarg",[this.$value(name_t).$to_sym()],this.$variable_map(name_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$blockarg",$Default_rewrite_hash_args_to_kwargs$206=function(amper_t,name_t){var arg_name,self=this;return $truthy(name_t["$nil?"]()["$!"]())&&self.$check_reserved_for_numparam(self.$value(name_t),self.$loc(name_t)),arg_name=$truthy(name_t)?self.$value(name_t).$to_sym():nil,self.$n("blockarg",[arg_name],self.$arg_prefix_map(amper_t,name_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$procarg0",$Default_rewrite_hash_args_to_kwargs$206=function(arg){var self=this,$ret_or_7=nil;return $truthy(self.$class().$emit_procarg0())?$truthy($truthy($ret_or_7=arg.$type()["$=="]("arg"))?self.$class().$emit_arg_inside_procarg0():$ret_or_7)?self.$n("procarg0",[arg],$$$($$$($$($nesting,"Source"),"Map"),"Collection").$new(nil,nil,arg.$location().$expression())):arg.$updated("procarg0"):arg},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$arg_expr",$Default_rewrite_hash_args_to_kwargs$206=function(expr){return expr.$type()["$=="]("lvasgn")?expr.$updated("arg"):this.$n("arg_expr",[expr],expr.$loc().$dup())},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$restarg_expr",$Default_rewrite_hash_args_to_kwargs$206=function(star_t,expr){return null==expr&&(expr=nil),$truthy(expr["$nil?"]())?this.$n0("restarg",this.$token_map(star_t)):expr.$type()["$=="]("lvasgn")?expr.$updated("restarg"):this.$n("restarg_expr",[expr],expr.$loc().$dup())},$Default_rewrite_hash_args_to_kwargs$206.$$arity=-2),Opal.def($Default_kwargs$ques$207,"$blockarg_expr",$Default_rewrite_hash_args_to_kwargs$206=function(amper_t,expr){return expr.$type()["$=="]("lvasgn")?expr.$updated("blockarg"):this.$n("blockarg_expr",[expr],expr.$loc().$dup())},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$objc_kwarg",$Default_rewrite_hash_args_to_kwargs$206=function(kwname_t,assoc_t,name_t){var kwname_l=nil,operator_l=nil,kwname_l=this.$loc(kwname_t),operator_l=$truthy(assoc_t["$nil?"]())?(kwname_l=kwname_l.$resize($rb_minus(kwname_l.$size(),1))).$end().$resize(1):this.$loc(assoc_t);return this.$n("objc_kwarg",[this.$value(kwname_t).$to_sym(),this.$value(name_t).$to_sym()],$$$($$$($$($nesting,"Source"),"Map"),"ObjcKwarg").$new(kwname_l,operator_l,this.$loc(name_t),kwname_l.$join(this.$loc(name_t))))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$objc_restarg",$Default_rewrite_hash_args_to_kwargs$206=function(star_t,name){return null==name&&(name=nil),$truthy(name["$nil?"]())?this.$n0("restarg",this.$arg_prefix_map(star_t)):name.$type()["$=="]("arg")?name.$updated("restarg",nil,$hash2(["location"],{location:name.$loc().$with_operator(this.$loc(star_t))})):this.$n("objc_restarg",[name],this.$unary_op_map(star_t,name))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=-2),Opal.def($Default_kwargs$ques$207,"$call_type_for_dot",$Default_rewrite_hash_args_to_kwargs$206=function(dot_t){var self=this,$ret_or_8=nil;return $truthy($truthy($ret_or_8=dot_t["$nil?"]()["$!"]())?self.$value(dot_t)["$=="]("anddot"):$ret_or_8)?"csend":"send"},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$forwarded_args",$Default_rewrite_hash_args_to_kwargs$206=function(dots_t){return this.$n("forwarded_args",[],this.$token_map(dots_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$call_method",$Default_rewrite_hash_args_to_kwargs$206=function(receiver,dot_t,selector_t,lparen_t,args,rparen_t){var type;return null==lparen_t&&(lparen_t=nil),null==args&&(args=[]),null==rparen_t&&(rparen_t=nil),type=this.$call_type_for_dot(dot_t),$truthy(this.$class().$emit_kwargs())&&this.$rewrite_hash_args_to_kwargs(args),$truthy(selector_t["$nil?"]())?this.$n(type,[receiver,"call"].concat(Opal.to_a(args)),this.$send_map(receiver,dot_t,nil,lparen_t,args,rparen_t)):this.$n(type,[receiver,this.$value(selector_t).$to_sym()].concat(Opal.to_a(args)),this.$send_map(receiver,dot_t,selector_t,lparen_t,args,rparen_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=-4),Opal.def($Default_kwargs$ques$207,"$call_lambda",$Default_rewrite_hash_args_to_kwargs$206=function(lambda_t){return $truthy(this.$class().$emit_lambda())?this.$n0("lambda",this.$expr_map(this.$loc(lambda_t))):this.$n("send",[nil,"lambda"],this.$send_map(nil,nil,lambda_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$block",$Default_rewrite_hash_args_to_kwargs$206=function(method_call,begin_t,args,body,end_t){var block,call_args=nil,last_arg=nil,$ret_or_9=nil,$ret_or_10=nil,block_type=nil,actual_send=nil,$a=[].concat(Opal.to_a(method_call)),call_args=(null==$a[0]||$a[0],null==$a[1]||$a[1],$slice.call($a,2));return method_call.$type()["$=="]("yield")&&this.$diagnostic("error","block_given_to_yield",nil,method_call.$loc().$keyword(),[this.$loc(begin_t)]),last_arg=call_args.$last(),$truthy($truthy($ret_or_9=last_arg)?$truthy($ret_or_10=last_arg.$type()["$=="]("block_pass"))?$ret_or_10:last_arg.$type()["$=="]("forwarded_args"):$ret_or_9)&&this.$diagnostic("error","block_and_blockarg",nil,last_arg.$loc().$expression(),[this.$loc(begin_t)]),args.$type()["$=="]("numargs")?(block_type="numblock",args=args.$children()["$[]"](0)):block_type="block",$truthy(["send","csend","index","super","zsuper","lambda"]["$include?"](method_call.$type()))?this.$n(block_type,[method_call,args,body],this.$block_map(method_call.$loc().$expression(),begin_t,end_t)):(actual_send=null==($a=[].concat(Opal.to_a(method_call)))[0]?nil:$a[0],block=this.$n(block_type,[actual_send,args,body],this.$block_map(actual_send.$loc().$expression(),begin_t,end_t)),this.$n(method_call.$type(),[block],method_call.$loc().$with_expression(this.$join_exprs(method_call,block))))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=5),Opal.def($Default_kwargs$ques$207,"$block_pass",$Default_rewrite_hash_args_to_kwargs$206=function(amper_t,arg){return this.$n("block_pass",[arg],this.$unary_op_map(amper_t,arg))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$objc_varargs",$Default_rewrite_hash_args_to_kwargs$206=function(pair,rest_of_varargs){var first_vararg=nil,vararg_array=nil,$a=[].concat(Opal.to_a(pair)),value=null==$a[0]?nil:$a[0],first_vararg=null==$a[1]?nil:$a[1],vararg_array=this.$array(nil,[first_vararg].concat(Opal.to_a(rest_of_varargs)),nil).$updated("objc_varargs");return pair.$updated(nil,[value,vararg_array],$hash2(["location"],{location:pair.$loc().$with_expression(pair.$loc().$expression().$join(vararg_array.$loc().$expression()))}))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$attr_asgn",$Default_rewrite_hash_args_to_kwargs$206=function(receiver,dot_t,selector_t){var method_name=$rb_plus(this.$value(selector_t),"=").$to_sym(),type=this.$call_type_for_dot(dot_t);return this.$n(type,[receiver,method_name],this.$send_map(receiver,dot_t,selector_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$index",$Default_rewrite_hash_args_to_kwargs$206=function(receiver,lbrack_t,indexes,rbrack_t){return $truthy(this.$class().$emit_kwargs())&&this.$rewrite_hash_args_to_kwargs(indexes),$truthy(this.$class().$emit_index())?this.$n("index",[receiver].concat(Opal.to_a(indexes)),this.$index_map(receiver,lbrack_t,rbrack_t)):this.$n("send",[receiver,"[]"].concat(Opal.to_a(indexes)),this.$send_index_map(receiver,lbrack_t,rbrack_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=4),Opal.def($Default_kwargs$ques$207,"$index_asgn",$Default_rewrite_hash_args_to_kwargs$206=function(receiver,lbrack_t,indexes,rbrack_t){return $truthy(this.$class().$emit_index())?this.$n("indexasgn",[receiver].concat(Opal.to_a(indexes)),this.$index_map(receiver,lbrack_t,rbrack_t)):this.$n("send",[receiver,"[]="].concat(Opal.to_a(indexes)),this.$send_index_map(receiver,lbrack_t,rbrack_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=4),Opal.def($Default_kwargs$ques$207,"$binary_op",$Default_rewrite_hash_args_to_kwargs$206=function(receiver,operator_t,arg){var source_map=nil,operator=nil,method_call=nil,source_map=this.$send_binary_op_map(receiver,operator_t,arg);return this.parser.$version()["$=="](18)&&((operator=this.$value(operator_t))["$=="]("!=")?method_call=this.$n("send",[receiver,"==",arg],source_map):operator["$=="]("!~")&&(method_call=this.$n("send",[receiver,"=~",arg],source_map)),$truthy(["!=","!~"]["$include?"](operator)))?this.$n("not",[method_call],this.$expr_map(source_map.$expression())):this.$n("send",[receiver,this.$value(operator_t).$to_sym(),arg],source_map)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$match_op",$Default_rewrite_hash_args_to_kwargs$206=function(receiver,match_t,arg){var $$103,regexp=nil,source_map=this.$send_binary_op_map(receiver,match_t,arg);return $truthy(regexp=this.$static_regexp_node(receiver))?($send(regexp.$names(),"each",[],(($$103=function(name){var self=null==$$103.$$s?this:$$103.$$s;return null==self.parser&&(self.parser=nil),null==name&&(name=nil),self.parser.$static_env().$declare(name)}).$$s=this,$$103.$$arity=1,$$103)),this.$n("match_with_lvasgn",[receiver,arg],source_map)):this.$n("send",[receiver,"=~",arg],source_map)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$unary_op",$Default_rewrite_hash_args_to_kwargs$206=function(op_t,receiver){var method=nil,$case=this.$value(op_t),method="+"["$==="]($case)||"-"["$==="]($case)?$rb_plus(this.$value(op_t),"@"):this.$value(op_t);return this.$n("send",[receiver,method.$to_sym()],this.$send_unary_op_map(op_t,receiver))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$not_op",$Default_rewrite_hash_args_to_kwargs$206=function(not_t,begin_t,receiver,end_t){var nil_node;return null==begin_t&&(begin_t=nil),null==receiver&&(receiver=nil),null==end_t&&(end_t=nil),this.parser.$version()["$=="](18)?this.$n("not",[this.$check_condition(receiver)],this.$unary_op_map(not_t,receiver)):$truthy(receiver["$nil?"]())?(nil_node=this.$n0("begin",this.$collection_map(begin_t,nil,end_t)),this.$n("send",[nil_node,"!"],this.$send_unary_op_map(not_t,nil_node))):this.$n("send",[this.$check_condition(receiver),"!"],this.$send_map(nil,nil,not_t,begin_t,[receiver],end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=-2),Opal.def($Default_kwargs$ques$207,"$logical_op",$Default_rewrite_hash_args_to_kwargs$206=function(type,lhs,op_t,rhs){return this.$n(type,[lhs,rhs],this.$binary_op_map(lhs,op_t,rhs))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=4),Opal.def($Default_kwargs$ques$207,"$condition",$Default_rewrite_hash_args_to_kwargs$206=function(cond_t,cond,then_t,if_true,else_t,if_false,end_t){return this.$n("if",[this.$check_condition(cond),if_true,if_false],this.$condition_map(cond_t,cond,then_t,if_true,else_t,if_false,end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=7),Opal.def($Default_kwargs$ques$207,"$condition_mod",$Default_rewrite_hash_args_to_kwargs$206=function(if_true,if_false,cond_t,cond){var $ret_or_11=nil;return this.$n("if",[this.$check_condition(cond),if_true,if_false],this.$keyword_mod_map($truthy($ret_or_11=if_true)?$ret_or_11:if_false,cond_t,cond))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=4),Opal.def($Default_kwargs$ques$207,"$ternary",$Default_rewrite_hash_args_to_kwargs$206=function(cond,question_t,if_true,colon_t,if_false){return this.$n("if",[this.$check_condition(cond),if_true,if_false],this.$ternary_map(cond,question_t,if_true,colon_t,if_false))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=5),Opal.def($Default_kwargs$ques$207,"$when",$Default_rewrite_hash_args_to_kwargs$206=function(when_t,patterns,then_t,body){var children=patterns["$<<"](body);return this.$n("when",children,this.$keyword_map(when_t,then_t,children,nil))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=4),Opal.def($Default_kwargs$ques$207,"$case",$Default_rewrite_hash_args_to_kwargs$206=function(case_t,expr,when_bodies,else_t,else_body,end_t){return this.$n("case",[expr].concat(Opal.to_a(when_bodies["$<<"](else_body))),this.$condition_map(case_t,expr,nil,nil,else_t,else_body,end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=6),Opal.def($Default_kwargs$ques$207,"$loop",$Default_rewrite_hash_args_to_kwargs$206=function(type,keyword_t,cond,do_t,body,end_t){return this.$n(type,[this.$check_condition(cond),body],this.$keyword_map(keyword_t,do_t,nil,end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=6),Opal.def($Default_kwargs$ques$207,"$loop_mod",$Default_rewrite_hash_args_to_kwargs$206=function(type,body,keyword_t,cond){return body.$type()["$=="]("kwbegin")&&(type+="_post"),this.$n(type,[this.$check_condition(cond),body],this.$keyword_mod_map(body,keyword_t,cond))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=4),Opal.def($Default_kwargs$ques$207,"$for",$Default_rewrite_hash_args_to_kwargs$206=function(for_t,iterator,in_t,iteratee,do_t,body,end_t){return this.$n("for",[iterator,iteratee,body],this.$for_map(for_t,in_t,do_t,end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=7),Opal.def($Default_kwargs$ques$207,"$keyword_cmd",$Default_rewrite_hash_args_to_kwargs$206=function(type,keyword_t,lparen_t,args,rparen_t){var self=this,$ret_or_12=nil,last_arg=nil,$ret_or_13=nil;return null==lparen_t&&(lparen_t=nil),null==args&&(args=[]),null==rparen_t&&(rparen_t=nil),$truthy($truthy($ret_or_12=type["$=="]("yield"))?$rb_gt(args.$count(),0):$ret_or_12)&&(last_arg=args.$last()).$type()["$=="]("block_pass")&&self.$diagnostic("error","block_given_to_yield",nil,self.$loc(keyword_t),[last_arg.$loc().$expression()]),$truthy($truthy($ret_or_13=["yield","super"]["$include?"](type))?self.$class().$emit_kwargs():$ret_or_13)&&self.$rewrite_hash_args_to_kwargs(args),self.$n(type,args,self.$keyword_map(keyword_t,lparen_t,args,rparen_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=-3),Opal.def($Default_kwargs$ques$207,"$preexe",$Default_rewrite_hash_args_to_kwargs$206=function(preexe_t,lbrace_t,compstmt,rbrace_t){return this.$n("preexe",[compstmt],this.$keyword_map(preexe_t,lbrace_t,[],rbrace_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=4),Opal.def($Default_kwargs$ques$207,"$postexe",$Default_rewrite_hash_args_to_kwargs$206=function(postexe_t,lbrace_t,compstmt,rbrace_t){return this.$n("postexe",[compstmt],this.$keyword_map(postexe_t,lbrace_t,[],rbrace_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=4),Opal.def($Default_kwargs$ques$207,"$rescue_body",$Default_rewrite_hash_args_to_kwargs$206=function(rescue_t,exc_list,assoc_t,exc_var,then_t,compound_stmt){return this.$n("resbody",[exc_list,exc_var,compound_stmt],this.$rescue_body_map(rescue_t,exc_list,assoc_t,exc_var,then_t,compound_stmt))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=6),Opal.def($Default_kwargs$ques$207,"$begin_body",$Default_rewrite_hash_args_to_kwargs$206=function(compound_stmt,rescue_bodies,else_t,else_,ensure_t,ensure_){var statements=nil;return null==rescue_bodies&&(rescue_bodies=[]),null==else_t&&(else_t=nil),null==else_&&(else_=nil),null==ensure_t&&(ensure_t=nil),null==ensure_&&(ensure_=nil),$truthy(rescue_bodies["$any?"]())?compound_stmt=$truthy(else_t)?this.$n("rescue",[compound_stmt].concat(Opal.to_a($rb_plus(rescue_bodies,[else_]))),this.$eh_keyword_map(compound_stmt,nil,rescue_bodies,else_t,else_)):this.$n("rescue",[compound_stmt].concat(Opal.to_a($rb_plus(rescue_bodies,[nil]))),this.$eh_keyword_map(compound_stmt,nil,rescue_bodies,nil,nil)):$truthy(else_t)&&(statements=[],$truthy(compound_stmt["$nil?"]()["$!"]())&&(compound_stmt.$type()["$=="]("begin")?statements=$rb_plus(statements,compound_stmt.$children()):statements.$push(compound_stmt)),statements.$push(this.$n("begin",[else_],this.$collection_map(else_t,[else_],nil))),compound_stmt=this.$n("begin",statements,this.$collection_map(nil,statements,nil))),$truthy(ensure_t)&&(compound_stmt=this.$n("ensure",[compound_stmt,ensure_],this.$eh_keyword_map(compound_stmt,ensure_t,[ensure_],nil,nil))),compound_stmt},$Default_rewrite_hash_args_to_kwargs$206.$$arity=-2),Opal.def($Default_kwargs$ques$207,"$compstmt",$Default_rewrite_hash_args_to_kwargs$206=function(statements){var self=this;return $truthy(statements["$none?"]())?nil:$truthy(statements["$one?"]())?statements.$first():self.$n("begin",statements,self.$collection_map(nil,statements,nil))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$begin",$Default_rewrite_hash_args_to_kwargs$206=function(begin_t,body,end_t){var $ret_or_14=nil,$ret_or_15=nil,$ret_or_16=nil;return $truthy(body["$nil?"]())?this.$n0("begin",this.$collection_map(begin_t,nil,end_t)):$truthy($truthy($ret_or_14=body.$type()["$=="]("mlhs"))?$ret_or_14:$truthy($ret_or_15=$truthy($ret_or_16=body.$type()["$=="]("begin"))?body.$loc().$begin()["$nil?"]():$ret_or_16)?body.$loc().$end()["$nil?"]():$ret_or_15)?this.$n(body.$type(),body.$children(),this.$collection_map(begin_t,body.$children(),end_t)):this.$n("begin",[body],this.$collection_map(begin_t,[body],end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$begin_keyword",$Default_rewrite_hash_args_to_kwargs$206=function(begin_t,body,end_t){var $ret_or_17=nil,$ret_or_18=nil;return $truthy(body["$nil?"]())?this.$n0("kwbegin",this.$collection_map(begin_t,nil,end_t)):$truthy($truthy($ret_or_17=$truthy($ret_or_18=body.$type()["$=="]("begin"))?body.$loc().$begin()["$nil?"]():$ret_or_18)?body.$loc().$end()["$nil?"]():$ret_or_17)?this.$n("kwbegin",body.$children(),this.$collection_map(begin_t,body.$children(),end_t)):this.$n("kwbegin",[body],this.$collection_map(begin_t,[body],end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$case_match",$Default_rewrite_hash_args_to_kwargs$206=function(case_t,expr,in_bodies,else_t,else_body,end_t){var $ret_or_19=nil;return $truthy($truthy($ret_or_19=else_t)?else_body["$!"]():$ret_or_19)&&(else_body=this.$n("empty_else",nil,this.$token_map(else_t))),this.$n("case_match",[expr].concat(Opal.to_a(in_bodies["$<<"](else_body))),this.$condition_map(case_t,expr,nil,nil,else_t,else_body,end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=6),Opal.def($Default_kwargs$ques$207,"$in_match",$Default_rewrite_hash_args_to_kwargs$206=function(lhs,in_t,rhs){return this.$n("in_match",[lhs,rhs],this.$binary_op_map(lhs,in_t,rhs))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$match_pattern",$Default_rewrite_hash_args_to_kwargs$206=function(lhs,match_t,rhs){return this.$n("match_pattern",[lhs,rhs],this.$binary_op_map(lhs,match_t,rhs))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$match_pattern_p",$Default_rewrite_hash_args_to_kwargs$206=function(lhs,match_t,rhs){return this.$n("match_pattern_p",[lhs,rhs],this.$binary_op_map(lhs,match_t,rhs))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$in_pattern",$Default_rewrite_hash_args_to_kwargs$206=function(in_t,pattern,guard,then_t,body){var children=nil,children=[pattern,guard,body];return this.$n("in_pattern",children,this.$keyword_map(in_t,then_t,children.$compact(),nil))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=5),Opal.def($Default_kwargs$ques$207,"$if_guard",$Default_rewrite_hash_args_to_kwargs$206=function(if_t,if_body){return this.$n("if_guard",[if_body],this.$guard_map(if_t,if_body))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$unless_guard",$Default_rewrite_hash_args_to_kwargs$206=function(unless_t,unless_body){return this.$n("unless_guard",[unless_body],this.$guard_map(unless_t,unless_body))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$match_var",$Default_rewrite_hash_args_to_kwargs$206=function(name_t){var name=this.$value(name_t).$to_sym(),name_l=this.$loc(name_t);return this.$check_lvar_name(name,name_l),this.$check_duplicate_pattern_variable(name,name_l),this.parser.$static_env().$declare(name),this.$n("match_var",[name],this.$variable_map(name_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$match_hash_var",$Default_rewrite_hash_args_to_kwargs$206=function(name_t){var expr_l=nil,name=this.$value(name_t).$to_sym(),name_l=(expr_l=this.$loc(name_t)).$adjust($hash2(["end_pos"],{end_pos:-1}));return this.$check_lvar_name(name,name_l),this.$check_duplicate_pattern_variable(name,name_l),this.parser.$static_env().$declare(name),this.$n("match_var",[name],$$$($$$($$($nesting,"Source"),"Map"),"Variable").$new(name_l,expr_l))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$match_hash_var_from_str",$Default_rewrite_hash_args_to_kwargs$206=function(begin_t,$a,end_t){var self=this,string=nil,$case=nil,name=nil,name_l=nil,begin_l=nil,end_l=nil,expr_l=nil;return $truthy($rb_gt($a.$length(),1))&&self.$diagnostic("error","pm_interp_in_var_name",nil,self.$loc(begin_t).$join(self.$loc(end_t))),string=$a["$[]"](0),$case=string.$type(),"str"["$==="]($case)?($a=[].concat(Opal.to_a(string)),name=null==$a[0]?nil:$a[0],name_l=string.$loc().$expression(),self.$check_lvar_name(name,name_l),self.$check_duplicate_pattern_variable(name,name_l),self.parser.$static_env().$declare(name),$truthy(begin_l=string.$loc().$begin())&&(name_l=name_l.$adjust($hash2(["begin_pos"],{begin_pos:begin_l.$length()}))),$truthy(end_l=string.$loc().$end())&&(name_l=name_l.$adjust($hash2(["end_pos"],{end_pos:end_l.$length()["$-@"]()}))),expr_l=self.$loc(begin_t).$join(string.$loc().$expression()).$join(self.$loc(end_t)),self.$n("match_var",[name.$to_sym()],$$$($$$($$($nesting,"Source"),"Map"),"Variable").$new(name_l,expr_l))):"begin"["$==="]($case)?self.$match_hash_var_from_str(begin_t,string.$children(),end_t):self.$diagnostic("error","pm_interp_in_var_name",nil,self.$loc(begin_t).$join(self.$loc(end_t)))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$match_rest",$Default_rewrite_hash_args_to_kwargs$206=function(star_t,name_t){var name;return null==name_t&&(name_t=nil),$truthy(name_t["$nil?"]())?this.$n0("match_rest",this.$unary_op_map(star_t)):(name=this.$match_var(name_t),this.$n("match_rest",[name],this.$unary_op_map(star_t,name)))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=-2),Opal.def($Default_kwargs$ques$207,"$hash_pattern",$Default_rewrite_hash_args_to_kwargs$206=function(lbrace_t,kwargs,rbrace_t){var args=this.$check_duplicate_args(kwargs);return this.$n("hash_pattern",args,this.$collection_map(lbrace_t,args,rbrace_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$array_pattern",$Default_rewrite_hash_args_to_kwargs$206=function(lbrack_t,elements,rbrack_t){var $$136,node_elements,node_type,trailing_comma=nil;return $truthy(elements["$nil?"]())?this.$n("array_pattern",nil,this.$collection_map(lbrack_t,[],rbrack_t)):(trailing_comma=!1,node_elements=$send(elements,"map",[],(($$136=function(element){null==$$136.$$s||$$136.$$s;return null==element&&(element=nil),element.$type()["$=="]("match_with_trailing_comma")?(trailing_comma=!0,element.$children().$first()):(trailing_comma=!1,element)}).$$s=this,$$136.$$arity=1,$$136)),node_type=$truthy(trailing_comma)?"array_pattern_with_tail":"array_pattern",this.$n(node_type,node_elements,this.$collection_map(lbrack_t,elements,rbrack_t)))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$find_pattern",$Default_rewrite_hash_args_to_kwargs$206=function(lbrack_t,elements,rbrack_t){return this.$n("find_pattern",elements,this.$collection_map(lbrack_t,elements,rbrack_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$match_with_trailing_comma",$Default_rewrite_hash_args_to_kwargs$206=function(match,comma_t){return this.$n("match_with_trailing_comma",[match],this.$expr_map(match.$loc().$expression().$join(this.$loc(comma_t))))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$const_pattern",$Default_rewrite_hash_args_to_kwargs$206=function(const$,ldelim_t,pattern,rdelim_t){return this.$n("const_pattern",[const$,pattern],$$$($$$($$($nesting,"Source"),"Map"),"Collection").$new(this.$loc(ldelim_t),this.$loc(rdelim_t),const$.$loc().$expression().$join(this.$loc(rdelim_t))))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=4),Opal.def($Default_kwargs$ques$207,"$pin",$Default_rewrite_hash_args_to_kwargs$206=function(pin_t,var$){return this.$n("pin",[var$],this.$send_unary_op_map(pin_t,var$))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$match_alt",$Default_rewrite_hash_args_to_kwargs$206=function(left,pipe_t,right){var source_map=this.$binary_op_map(left,pipe_t,right);return this.$n("match_alt",[left,right],source_map)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$match_as",$Default_rewrite_hash_args_to_kwargs$206=function(value,assoc_t,as){var source_map=this.$binary_op_map(value,assoc_t,as);return this.$n("match_as",[value,as],source_map)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$match_nil_pattern",$Default_rewrite_hash_args_to_kwargs$206=function(dstar_t,nil_t){return this.$n0("match_nil_pattern",this.$arg_prefix_map(dstar_t,nil_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$match_pair",$Default_rewrite_hash_args_to_kwargs$206=function(label_type,$a,value){var begin_t,parts,end_t,label_loc,var_name;return label_type["$=="]("label")?(this.$check_duplicate_pattern_key($a["$[]"](0),$a["$[]"](1)),this.$pair_keyword($a,value)):($a=$a,begin_t=null==($a=Opal.to_ary($a))[0]?nil:$a[0],parts=null==$a[1]?nil:$a[1],end_t=null==$a[2]?nil:$a[2],label_loc=this.$loc(begin_t).$join(this.$loc(end_t)),$truthy(var_name=this.$static_string(parts))?this.$check_duplicate_pattern_key(var_name,label_loc):this.$diagnostic("error","pm_interp_in_var_name",nil,label_loc),this.$pair_quoted(begin_t,parts,end_t,value))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$match_label",$Default_rewrite_hash_args_to_kwargs$206=function(label_type,$a){var begin_t,strings,end_t;return label_type["$=="]("label")?this.$match_hash_var($a):($a=$a,begin_t=null==($a=Opal.to_ary($a))[0]?nil:$a[0],strings=null==$a[1]?nil:$a[1],end_t=null==$a[2]?nil:$a[2],this.$match_hash_var_from_str(begin_t,strings,end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),$Default_kwargs$ques$207.$private(),Opal.def($Default_kwargs$ques$207,"$check_condition",$Default_rewrite_hash_args_to_kwargs$206=function(cond){var $a,lhs,rhs,self=this,$case=nil,type=nil,$ret_or_20=nil;return $case=cond.$type(),"masgn"["$==="]($case)?$truthy(function(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs<=rhs:lhs["$<="](rhs)}(self.parser.$version(),23))?self.$diagnostic("error","masgn_as_condition",nil,cond.$loc().$expression()):cond:"begin"["$==="]($case)?cond.$children().$count()["$=="](1)?cond.$updated(nil,[self.$check_condition(cond.$children().$last())]):cond:"and"["$==="]($case)||"or"["$==="]($case)||"irange"["$==="]($case)||"erange"["$==="]($case)?($a=[].concat(Opal.to_a(cond)),lhs=null==$a[0]?nil:$a[0],rhs=null==$a[1]?nil:$a[1],$case=cond.$type(),type="irange"["$==="]($case)?"iflipflop":"erange"["$==="]($case)?"eflipflop":nil,$truthy($truthy($ret_or_20=["and","or"]["$include?"](cond.$type()))?self.parser.$version()["$=="](18):$ret_or_20)?cond:cond.$updated(type,[self.$check_condition(lhs),self.$check_condition(rhs)])):"regexp"["$==="]($case)?self.$n("match_current_line",[cond],self.$expr_map(cond.$loc().$expression())):cond},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$check_duplicate_args",$Default_rewrite_hash_args_to_kwargs$206=function(args,map){var $$148;return null==map&&(map=$hash2([],{})),$send(args,"each",[],(($$148=function(this_arg){var self=null==$$148.$$s?this:$$148.$$s,$case=nil;return null==this_arg&&(this_arg=nil),$case=this_arg.$type(),"arg"["$==="]($case)||"optarg"["$==="]($case)||"restarg"["$==="]($case)||"blockarg"["$==="]($case)||"kwarg"["$==="]($case)||"kwoptarg"["$==="]($case)||"kwrestarg"["$==="]($case)||"shadowarg"["$==="]($case)?self.$check_duplicate_arg(this_arg,map):"procarg0"["$==="]($case)?$truthy(this_arg.$children()["$[]"](0)["$is_a?"]($$($nesting,"Symbol")))?self.$check_duplicate_arg(this_arg,map):self.$check_duplicate_args(this_arg.$children(),map):"mlhs"["$==="]($case)?self.$check_duplicate_args(this_arg.$children(),map):nil}).$$s=this,$$148.$$arity=1,$$148))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=-2),Opal.def($Default_kwargs$ques$207,"$check_duplicate_arg",$Default_rewrite_hash_args_to_kwargs$206=function(this_arg,map){var $a,this_name,that_name,$writer,that_arg=nil;return null==map&&(map=$hash2([],{})),this_name=null==($a=[].concat(Opal.to_a(this_arg)))[0]?nil:$a[0],that_arg=map["$[]"](this_name),that_name=null==($a=[].concat(Opal.to_a(that_arg)))[0]?nil:$a[0],$truthy(that_arg["$nil?"]())?($writer=[this_name,this_arg],$send(map,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]):$truthy(this["$arg_name_collides?"](this_name,that_name))?this.$diagnostic("error","duplicate_argument",nil,this_arg.$loc().$name(),[that_arg.$loc().$name()]):nil},$Default_rewrite_hash_args_to_kwargs$206.$$arity=-2),Opal.def($Default_kwargs$ques$207,"$validate_no_forward_arg_after_restarg",$Default_rewrite_hash_args_to_kwargs$206=function(args){var $$151,restarg=nil,forward_arg=nil,$ret_or_21=nil,restarg=nil,forward_arg=nil;return $send(args,"each",[],(($$151=function(arg){null==$$151.$$s||$$151.$$s;var $case=nil;return null==arg&&(arg=nil),$case=arg.$type(),"restarg"["$==="]($case)?restarg=arg:"forward_arg"["$==="]($case)?forward_arg=arg:nil}).$$s=this,$$151.$$arity=1,$$151)),$truthy($truthy($ret_or_21=forward_arg["$nil?"]()["$!"]())?restarg["$nil?"]()["$!"]():$ret_or_21)?this.$diagnostic("error","forward_arg_after_restarg",nil,forward_arg.$loc().$expression(),[restarg.$loc().$expression()]):nil},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$check_assignment_to_numparam",$Default_rewrite_hash_args_to_kwargs$206=function(name,loc){var assigning_to_numparam,self=this,$ret_or_22=nil,$ret_or_23=nil;return $truthy($rb_lt(self.parser.$version(),27))?nil:(assigning_to_numparam=$truthy($ret_or_22=$truthy($ret_or_23=self.parser.$context()["$in_dynamic_block?"]())?name["$=~"](/^_([1-9])$/):$ret_or_23)?self.parser.$max_numparam_stack()["$has_numparams?"]():$ret_or_22,$truthy(assigning_to_numparam)?self.$diagnostic("error","cant_assign_to_numparam",$hash2(["name"],{name:name}),loc):nil)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$check_reserved_for_numparam",$Default_rewrite_hash_args_to_kwargs$206=function(name,loc){return!$truthy($rb_lt(this.parser.$version(),30))&&$truthy(name["$=~"](/^_([1-9])$/))?this.$diagnostic("error","reserved_for_numparam",$hash2(["name"],{name:name}),loc):nil},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$arg_name_collides?",$Default_rewrite_hash_args_to_kwargs$206=function(this_name,that_name){var $case=nil,$ret_or_24=nil,$ret_or_25=nil,$ret_or_26=nil;return $case=this.parser.$version(),18["$==="]($case)?this_name["$=="](that_name):19["$==="]($case)?$truthy($ret_or_24=this_name["$!="]("_"))?this_name["$=="](that_name):$ret_or_24:$truthy($ret_or_25=$truthy($ret_or_26=this_name)?this_name["$[]"](0)["$!="]("_"):$ret_or_26)?this_name["$=="](that_name):$ret_or_25},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$check_lvar_name",$Default_rewrite_hash_args_to_kwargs$206=function(name,loc){return $truthy(name["$=~"](/^[[[:lower:]]_][[[:alnum:]]_]*$/))?nil:this.$diagnostic("error","lvar_name",$hash2(["name"],{name:name}),loc)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$check_duplicate_pattern_variable",$Default_rewrite_hash_args_to_kwargs$206=function(name,loc){return $truthy(name.$to_s()["$start_with?"]("_"))?nil:($truthy(this.parser.$pattern_variables()["$declared?"](name))&&this.$diagnostic("error","duplicate_variable_name",$hash2(["name"],{name:name.$to_s()}),loc),this.parser.$pattern_variables().$declare(name))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$check_duplicate_pattern_key",$Default_rewrite_hash_args_to_kwargs$206=function(name,loc){return $truthy(this.parser.$pattern_hash_keys()["$declared?"](name))&&this.$diagnostic("error","duplicate_pattern_key",$hash2(["name"],{name:name.$to_s()}),loc),this.parser.$pattern_hash_keys().$declare(name)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$n",$Default_rewrite_hash_args_to_kwargs$206=function(type,children,source_map){return $$$($$($nesting,"AST"),"Node").$new(type,children,$hash2(["location"],{location:source_map}))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$n0",$Default_rewrite_hash_args_to_kwargs$206=function(type,source_map){return this.$n(type,[],source_map)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$join_exprs",$Default_rewrite_hash_args_to_kwargs$206=function(left_expr,right_expr){return left_expr.$loc().$expression().$join(right_expr.$loc().$expression())},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$token_map",$Default_rewrite_hash_args_to_kwargs$206=function(token){return $$$($$($nesting,"Source"),"Map").$new(this.$loc(token))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$delimited_string_map",$Default_rewrite_hash_args_to_kwargs$206=function(string_t){var str_range=nil,begin_l=(str_range=this.$loc(string_t)).$with($hash2(["end_pos"],{end_pos:$rb_plus(str_range.$begin_pos(),1)})),end_l=str_range.$with($hash2(["begin_pos"],{begin_pos:$rb_minus(str_range.$end_pos(),1)}));return $$$($$$($$($nesting,"Source"),"Map"),"Collection").$new(begin_l,end_l,this.$loc(string_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$prefix_string_map",$Default_rewrite_hash_args_to_kwargs$206=function(symbol){var str_range=nil,begin_l=(str_range=this.$loc(symbol)).$with($hash2(["end_pos"],{end_pos:$rb_plus(str_range.$begin_pos(),1)}));return $$$($$$($$($nesting,"Source"),"Map"),"Collection").$new(begin_l,nil,this.$loc(symbol))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$unquoted_map",$Default_rewrite_hash_args_to_kwargs$206=function(token){return $$$($$$($$($nesting,"Source"),"Map"),"Collection").$new(nil,nil,this.$loc(token))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$pair_keyword_map",$Default_rewrite_hash_args_to_kwargs$206=function(key_t,value_e){var key_range=nil,key_l=(key_range=this.$loc(key_t)).$adjust($hash2(["end_pos"],{end_pos:-1})),colon_l=key_range.$with($hash2(["begin_pos"],{begin_pos:$rb_minus(key_range.$end_pos(),1)}));return[$$$($$$($$($nesting,"Source"),"Map"),"Collection").$new(nil,nil,key_l),$$$($$$($$($nesting,"Source"),"Map"),"Operator").$new(colon_l,key_range.$join(value_e.$loc().$expression()))]},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$pair_quoted_map",$Default_rewrite_hash_args_to_kwargs$206=function(begin_t,end_t,value_e){var end_l=nil,quote_l=(end_l=this.$loc(end_t)).$with($hash2(["begin_pos","end_pos"],{begin_pos:$rb_minus(end_l.$end_pos(),2),end_pos:$rb_minus(end_l.$end_pos(),1)})),colon_l=end_l.$with($hash2(["begin_pos"],{begin_pos:$rb_minus(end_l.$end_pos(),1)}));return[[this.$value(end_t),quote_l],$$$($$$($$($nesting,"Source"),"Map"),"Operator").$new(colon_l,this.$loc(begin_t).$join(value_e.$loc().$expression()))]},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$expr_map",$Default_rewrite_hash_args_to_kwargs$206=function(loc){return $$$($$($nesting,"Source"),"Map").$new(loc)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$collection_map",$Default_rewrite_hash_args_to_kwargs$206=function(begin_t,parts,end_t){var $ret_or_27=nil,expr_l=nil;return $truthy($truthy($ret_or_27=begin_t["$nil?"]())?$ret_or_27:end_t["$nil?"]())?$truthy(parts["$any?"]())?expr_l=this.$join_exprs(parts.$first(),parts.$last()):$truthy(begin_t["$nil?"]()["$!"]())?expr_l=this.$loc(begin_t):$truthy(end_t["$nil?"]()["$!"]())&&(expr_l=this.$loc(end_t)):expr_l=this.$loc(begin_t).$join(this.$loc(end_t)),$$$($$$($$($nesting,"Source"),"Map"),"Collection").$new(this.$loc(begin_t),this.$loc(end_t),expr_l)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$string_map",$Default_rewrite_hash_args_to_kwargs$206=function(begin_t,parts,end_t){var self=this,$ret_or_28=nil,expr_l=nil;return $truthy($truthy($ret_or_28=begin_t)?self.$value(begin_t)["$start_with?"]("<<"):$ret_or_28)?(expr_l=$truthy(parts["$any?"]())?self.$join_exprs(parts.$first(),parts.$last()):self.$loc(end_t).$begin(),$$$($$$($$($nesting,"Source"),"Map"),"Heredoc").$new(self.$loc(begin_t),expr_l,self.$loc(end_t))):self.$collection_map(begin_t,parts,end_t)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$regexp_map",$Default_rewrite_hash_args_to_kwargs$206=function(begin_t,end_t,options_e){return $$$($$$($$($nesting,"Source"),"Map"),"Collection").$new(this.$loc(begin_t),this.$loc(end_t),this.$loc(begin_t).$join(options_e.$loc().$expression()))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$constant_map",$Default_rewrite_hash_args_to_kwargs$206=function(scope,colon2_t,name_t){var expr_l=nil,expr_l=$truthy(scope["$nil?"]())?this.$loc(name_t):scope.$loc().$expression().$join(this.$loc(name_t));return $$$($$$($$($nesting,"Source"),"Map"),"Constant").$new(this.$loc(colon2_t),this.$loc(name_t),expr_l)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$variable_map",$Default_rewrite_hash_args_to_kwargs$206=function(name_t){return $$$($$$($$($nesting,"Source"),"Map"),"Variable").$new(this.$loc(name_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$binary_op_map",$Default_rewrite_hash_args_to_kwargs$206=function(left_e,op_t,right_e){return $$$($$$($$($nesting,"Source"),"Map"),"Operator").$new(this.$loc(op_t),this.$join_exprs(left_e,right_e))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$unary_op_map",$Default_rewrite_hash_args_to_kwargs$206=function(op_t,arg_e){var expr_l=nil;return null==arg_e&&(arg_e=nil),expr_l=$truthy(arg_e["$nil?"]())?this.$loc(op_t):this.$loc(op_t).$join(arg_e.$loc().$expression()),$$$($$$($$($nesting,"Source"),"Map"),"Operator").$new(this.$loc(op_t),expr_l)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=-2),Opal.def($Default_kwargs$ques$207,"$range_map",$Default_rewrite_hash_args_to_kwargs$206=function(start_e,op_t,end_e){var $ret_or_29=nil,expr_l=nil;return $truthy($truthy($ret_or_29=start_e)?end_e:$ret_or_29)?expr_l=this.$join_exprs(start_e,end_e):$truthy(start_e)?expr_l=start_e.$loc().$expression().$join(this.$loc(op_t)):$truthy(end_e)&&(expr_l=this.$loc(op_t).$join(end_e.$loc().$expression())),$$$($$$($$($nesting,"Source"),"Map"),"Operator").$new(this.$loc(op_t),expr_l)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$arg_prefix_map",$Default_rewrite_hash_args_to_kwargs$206=function(op_t,name_t){var expr_l=nil;return null==name_t&&(name_t=nil),expr_l=$truthy(name_t["$nil?"]())?this.$loc(op_t):this.$loc(op_t).$join(this.$loc(name_t)),$$$($$$($$($nesting,"Source"),"Map"),"Variable").$new(this.$loc(name_t),expr_l)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=-2),Opal.def($Default_kwargs$ques$207,"$kwarg_map",$Default_rewrite_hash_args_to_kwargs$206=function(name_t,value_e){var name_range,expr_l=nil;return null==value_e&&(value_e=nil),name_range=this.$loc(name_t).$adjust($hash2(["end_pos"],{end_pos:-1})),expr_l=$truthy(value_e)?this.$loc(name_t).$join(value_e.$loc().$expression()):this.$loc(name_t),$$$($$$($$($nesting,"Source"),"Map"),"Variable").$new(name_range,expr_l)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=-2),Opal.def($Default_kwargs$ques$207,"$module_definition_map",$Default_rewrite_hash_args_to_kwargs$206=function(keyword_t,name_e,operator_t,end_t){var name_l=nil;return $truthy(name_e)&&(name_l=name_e.$loc().$expression()),$$$($$$($$($nesting,"Source"),"Map"),"Definition").$new(this.$loc(keyword_t),this.$loc(operator_t),name_l,this.$loc(end_t))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=4),Opal.def($Default_kwargs$ques$207,"$definition_map",$Default_rewrite_hash_args_to_kwargs$206=function(keyword_t,operator_t,name_t,end_t){return $$$($$$($$($nesting,"Source"),"Map"),"MethodDefinition").$new(this.$loc(keyword_t),this.$loc(operator_t),this.$loc(name_t),this.$loc(end_t),nil,nil)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=4),Opal.def($Default_kwargs$ques$207,"$endless_definition_map",$Default_rewrite_hash_args_to_kwargs$206=function(keyword_t,operator_t,name_t,assignment_t,body_e){var body_l=body_e.$loc().$expression();return $$$($$$($$($nesting,"Source"),"Map"),"MethodDefinition").$new(this.$loc(keyword_t),this.$loc(operator_t),this.$loc(name_t),nil,this.$loc(assignment_t),body_l)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=5),Opal.def($Default_kwargs$ques$207,"$send_map",$Default_rewrite_hash_args_to_kwargs$206=function(receiver_e,dot_t,selector_t,begin_t,args,end_t){var begin_l=nil,end_l=nil;return null==begin_t&&(begin_t=nil),null==args&&(args=[]),null==end_t&&(end_t=nil),$truthy(receiver_e)?begin_l=receiver_e.$loc().$expression():$truthy(selector_t)&&(begin_l=this.$loc(selector_t)),$truthy(end_t)?end_l=this.$loc(end_t):$truthy(args["$any?"]())?end_l=args.$last().$loc().$expression():$truthy(selector_t)&&(end_l=this.$loc(selector_t)),$$$($$$($$($nesting,"Source"),"Map"),"Send").$new(this.$loc(dot_t),this.$loc(selector_t),this.$loc(begin_t),this.$loc(end_t),begin_l.$join(end_l))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=-4),Opal.def($Default_kwargs$ques$207,"$var_send_map",$Default_rewrite_hash_args_to_kwargs$206=function(variable_e){return $$$($$$($$($nesting,"Source"),"Map"),"Send").$new(nil,variable_e.$loc().$expression(),nil,nil,variable_e.$loc().$expression())},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$send_binary_op_map",$Default_rewrite_hash_args_to_kwargs$206=function(lhs_e,selector_t,rhs_e){return $$$($$$($$($nesting,"Source"),"Map"),"Send").$new(nil,this.$loc(selector_t),nil,nil,this.$join_exprs(lhs_e,rhs_e))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$send_unary_op_map",$Default_rewrite_hash_args_to_kwargs$206=function(selector_t,arg_e){var expr_l=nil,expr_l=$truthy(arg_e["$nil?"]())?this.$loc(selector_t):this.$loc(selector_t).$join(arg_e.$loc().$expression());return $$$($$$($$($nesting,"Source"),"Map"),"Send").$new(nil,this.$loc(selector_t),nil,nil,expr_l)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$index_map",$Default_rewrite_hash_args_to_kwargs$206=function(receiver_e,lbrack_t,rbrack_t){return $$$($$$($$($nesting,"Source"),"Map"),"Index").$new(this.$loc(lbrack_t),this.$loc(rbrack_t),receiver_e.$loc().$expression().$join(this.$loc(rbrack_t)))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$send_index_map",$Default_rewrite_hash_args_to_kwargs$206=function(receiver_e,lbrack_t,rbrack_t){return $$$($$$($$($nesting,"Source"),"Map"),"Send").$new(nil,this.$loc(lbrack_t).$join(this.$loc(rbrack_t)),nil,nil,receiver_e.$loc().$expression().$join(this.$loc(rbrack_t)))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$block_map",$Default_rewrite_hash_args_to_kwargs$206=function(receiver_l,begin_t,end_t){return $$$($$$($$($nesting,"Source"),"Map"),"Collection").$new(this.$loc(begin_t),this.$loc(end_t),receiver_l.$join(this.$loc(end_t)))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$keyword_map",$Default_rewrite_hash_args_to_kwargs$206=function(keyword_t,begin_t,args,end_t){var $ret_or_30=nil,end_l=nil,$ret_or_31=nil,$ret_or_32=nil;return args=$truthy($ret_or_30=args)?$ret_or_30:[],end_l=$truthy(end_t)?this.$loc(end_t):$truthy($truthy($ret_or_31=args["$any?"]())?args.$last()["$nil?"]()["$!"]():$ret_or_31)?args.$last().$loc().$expression():$truthy($truthy($ret_or_32=args["$any?"]())?$rb_gt(args.$count(),1):$ret_or_32)?args["$[]"](-2).$loc().$expression():this.$loc(keyword_t),$$$($$$($$($nesting,"Source"),"Map"),"Keyword").$new(this.$loc(keyword_t),this.$loc(begin_t),this.$loc(end_t),this.$loc(keyword_t).$join(end_l))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=4),Opal.def($Default_kwargs$ques$207,"$keyword_mod_map",$Default_rewrite_hash_args_to_kwargs$206=function(pre_e,keyword_t,post_e){return $$$($$$($$($nesting,"Source"),"Map"),"Keyword").$new(this.$loc(keyword_t),nil,nil,this.$join_exprs(pre_e,post_e))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=3),Opal.def($Default_kwargs$ques$207,"$condition_map",$Default_rewrite_hash_args_to_kwargs$206=function(keyword_t,cond_e,begin_t,body_e,else_t,else_e,end_t){var end_l=nil,$ret_or_33=nil,$ret_or_34=nil,end_l=$truthy(end_t)?this.$loc(end_t):$truthy($truthy($ret_or_33=else_e)?else_e.$loc().$expression():$ret_or_33)?else_e.$loc().$expression():$truthy(this.$loc(else_t))?this.$loc(else_t):$truthy($truthy($ret_or_34=body_e)?body_e.$loc().$expression():$ret_or_34)?body_e.$loc().$expression():$truthy(this.$loc(begin_t))?this.$loc(begin_t):cond_e.$loc().$expression();return $$$($$$($$($nesting,"Source"),"Map"),"Condition").$new(this.$loc(keyword_t),this.$loc(begin_t),this.$loc(else_t),this.$loc(end_t),this.$loc(keyword_t).$join(end_l))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=7),Opal.def($Default_kwargs$ques$207,"$ternary_map",$Default_rewrite_hash_args_to_kwargs$206=function(begin_e,question_t,mid_e,colon_t,end_e){return $$$($$$($$($nesting,"Source"),"Map"),"Ternary").$new(this.$loc(question_t),this.$loc(colon_t),this.$join_exprs(begin_e,end_e))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=5),Opal.def($Default_kwargs$ques$207,"$for_map",$Default_rewrite_hash_args_to_kwargs$206=function(keyword_t,in_t,begin_t,end_t){return $$$($$$($$($nesting,"Source"),"Map"),"For").$new(this.$loc(keyword_t),this.$loc(in_t),this.$loc(begin_t),this.$loc(end_t),this.$loc(keyword_t).$join(this.$loc(end_t)))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=4),Opal.def($Default_kwargs$ques$207,"$rescue_body_map",$Default_rewrite_hash_args_to_kwargs$206=function(keyword_t,exc_list_e,assoc_t,exc_var_e,then_t,compstmt_e){var end_l=nil,$ret_or_35=nil,$ret_or_36=nil,$ret_or_37=nil;return $truthy(compstmt_e)&&(end_l=compstmt_e.$loc().$expression()),$truthy($truthy($ret_or_35=end_l["$nil?"]())?then_t:$ret_or_35)&&(end_l=this.$loc(then_t)),$truthy($truthy($ret_or_36=end_l["$nil?"]())?exc_var_e:$ret_or_36)&&(end_l=exc_var_e.$loc().$expression()),$truthy($truthy($ret_or_37=end_l["$nil?"]())?exc_list_e:$ret_or_37)&&(end_l=exc_list_e.$loc().$expression()),$truthy(end_l["$nil?"]())&&(end_l=this.$loc(keyword_t)),$$$($$$($$($nesting,"Source"),"Map"),"RescueBody").$new(this.$loc(keyword_t),this.$loc(assoc_t),this.$loc(then_t),this.$loc(keyword_t).$join(end_l))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=6),Opal.def($Default_kwargs$ques$207,"$eh_keyword_map",$Default_rewrite_hash_args_to_kwargs$206=function(compstmt_e,keyword_t,body_es,else_t,else_e){var begin_l=nil,end_l=nil,begin_l=$truthy(compstmt_e["$nil?"]())?$truthy(keyword_t["$nil?"]())?body_es.$first().$loc().$expression():this.$loc(keyword_t):compstmt_e.$loc().$expression(),end_l=$truthy(else_t)?$truthy(else_e["$nil?"]())?this.$loc(else_t):else_e.$loc().$expression():$truthy(body_es.$last()["$nil?"]()["$!"]())?body_es.$last().$loc().$expression():this.$loc(keyword_t);return $$$($$$($$($nesting,"Source"),"Map"),"Condition").$new(this.$loc(keyword_t),nil,this.$loc(else_t),nil,begin_l.$join(end_l))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=5),Opal.def($Default_kwargs$ques$207,"$guard_map",$Default_rewrite_hash_args_to_kwargs$206=function(keyword_t,guard_body_e){var keyword_l=nil,keyword_l=this.$loc(keyword_t),guard_body_l=guard_body_e.$loc().$expression();return $$$($$$($$($nesting,"Source"),"Map"),"Keyword").$new(keyword_l,nil,nil,keyword_l.$join(guard_body_l))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$static_string",$Default_rewrite_hash_args_to_kwargs$206=function(nodes){try{var $$197;return $send(nodes,"map",[],(($$197=function(node){var $case,string,self=null==$$197.$$s?this:$$197.$$s;return null==node&&(node=nil),function(){if($case=node.$type(),"str"["$==="]($case))return node.$children()["$[]"](0);if("begin"["$==="]($case)){if($truthy(string=self.$static_string(node.$children())))return string;Opal.ret(nil)}else Opal.ret(nil)}()}).$$s=this,$$197.$$arity=1,$$197)).$join()}catch($returner){if($returner===Opal.returner)return $returner.$v;throw $returner}},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$static_regexp",$Default_rewrite_hash_args_to_kwargs$206=function(parts,options){var source=nil,source=this.$static_string(parts);return $truthy(source["$nil?"]())?nil:(source=$truthy(options.$children()["$include?"]("u"))?source.$encode($$$($$($nesting,"Encoding"),"UTF_8")):$truthy(options.$children()["$include?"]("e"))?source.$encode($$$($$($nesting,"Encoding"),"EUC_JP")):$truthy(options.$children()["$include?"]("s"))?source.$encode($$$($$($nesting,"Encoding"),"WINDOWS_31J")):$truthy(options.$children()["$include?"]("n"))?source.$encode($$$($$($nesting,"Encoding"),"BINARY")):source,$$($nesting,"Regexp").$new(source,$truthy(options.$children()["$include?"]("x"))?$$$($$($nesting,"Regexp"),"EXTENDED"):nil))},$Default_rewrite_hash_args_to_kwargs$206.$$arity=2),Opal.def($Default_kwargs$ques$207,"$static_regexp_node",$Default_rewrite_hash_args_to_kwargs$206=function($a){var parts,options;return $a.$type()["$=="]("regexp")?(parts=($a=[$a.$children()["$[]"]($range(0,-2,!1)),$a.$children()["$[]"](-1)])[0],options=$a[1],this.$static_regexp(parts,options)):nil},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$collapse_string_parts?",$Default_rewrite_hash_args_to_kwargs$206=function(parts){var $ret_or_38;return $truthy($ret_or_38=parts["$one?"]())?["str","dstr"]["$include?"](parts.$first().$type()):$ret_or_38},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$value",$Default_rewrite_hash_args_to_kwargs$206=function(token){return token["$[]"](0)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$string_value",$Default_rewrite_hash_args_to_kwargs$206=function(token){return $truthy(token["$[]"](0)["$valid_encoding?"]())||this.$diagnostic("error","invalid_encoding",nil,token["$[]"](1)),token["$[]"](0)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$loc",$Default_rewrite_hash_args_to_kwargs$206=function(token){var $ret_or_39=nil;return $truthy($truthy($ret_or_39=token)?token["$[]"](0):$ret_or_39)?token["$[]"](1):nil},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$diagnostic",$Default_rewrite_hash_args_to_kwargs$206=function(type,reason,arguments$,location,highlights){return null==highlights&&(highlights=[]),this.parser.$diagnostics().$process($$($nesting,"Diagnostic").$new(type,reason,arguments$,location,highlights)),type["$=="]("error")?this.parser.$send("yyerror"):nil},$Default_rewrite_hash_args_to_kwargs$206.$$arity=-5),Opal.def($Default_kwargs$ques$207,"$validate_definee",$Default_rewrite_hash_args_to_kwargs$206=function(definee){var self=this,$case=nil;return $case=definee.$type(),!("int"["$==="]($case)||"str"["$==="]($case)||"dstr"["$==="]($case)||"sym"["$==="]($case)||"dsym"["$==="]($case)||"regexp"["$==="]($case)||"array"["$==="]($case)||"hash"["$==="]($case))||(self.$diagnostic("error","singleton_literal",nil,definee.$loc().$expression()),!1)},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$rewrite_hash_args_to_kwargs",$Default_rewrite_hash_args_to_kwargs$206=function(args){var self=this,$ret_or_40=nil,$writer=nil,$ret_or_41=nil,$ret_or_42=nil;return $truthy($truthy($ret_or_40=args["$any?"]())?self["$kwargs?"](args.$last()):$ret_or_40)?($writer=[$rb_minus(args.$length(),1),args["$[]"]($rb_minus(args.$length(),1)).$updated("kwargs")],$send(args,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]):$truthy($truthy($ret_or_41=$truthy($ret_or_42=$rb_gt(args.$length(),1))?args.$last().$type()["$=="]("block_pass"):$ret_or_42)?self["$kwargs?"](args["$[]"]($rb_minus(args.$length(),2))):$ret_or_41)?($writer=[$rb_minus(args.$length(),2),args["$[]"]($rb_minus(args.$length(),2)).$updated("kwargs")],$send(args,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]):nil},$Default_rewrite_hash_args_to_kwargs$206.$$arity=1),Opal.def($Default_kwargs$ques$207,"$kwargs?",$Default_kwargs$ques$207=function(node){var $ret_or_43,$ret_or_44=nil;return $truthy($ret_or_43=$truthy($ret_or_44=node.$type()["$=="]("hash"))?node.$loc().$begin()["$nil?"]():$ret_or_44)?node.$loc().$end()["$nil?"]():$ret_or_43},$Default_kwargs$ques$207.$$arity=1),nil&&"kwargs?"}($$($nesting,"Builders"),$nesting)}($nesting[0],$nesting)},Opal.modules["parser/context"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send=Opal.send,$truthy=Opal.truthy;return Opal.add_stubs(["$reset","$attr_accessor","$in_block","$in_lambda"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($nesting,$Context_reset$2){var $Context_in_dynamic_block$ques$3=$klass($nesting,null,"Context"),$nesting=[$Context_in_dynamic_block$ques$3].concat($Context_reset$2);return Opal.const_set($nesting[0],"FLAGS",["in_defined","in_kwarg","in_argdef","in_def","in_class","in_block","in_lambda"]),Opal.def($Context_in_dynamic_block$ques$3,"$initialize",$Context_reset$2=function(){return this.$reset()},$Context_reset$2.$$arity=0),Opal.def($Context_in_dynamic_block$ques$3,"$reset",$Context_reset$2=function(){return this.in_defined=!1,this.in_kwarg=!1,this.in_argdef=!1,this.in_def=!1,this.in_class=!1,this.in_block=!1,this.in_lambda=!1},$Context_reset$2.$$arity=0),$send($Context_in_dynamic_block$ques$3,"attr_accessor",Opal.to_a($$($nesting,"FLAGS"))),Opal.def($Context_in_dynamic_block$ques$3,"$in_dynamic_block?",$Context_in_dynamic_block$ques$3=function(){var $ret_or_1;return $truthy($ret_or_1=this.$in_block())?$ret_or_1:this.$in_lambda()},$Context_in_dynamic_block$ques$3.$$arity=0),nil&&"in_dynamic_block?"}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/max_numparam_stack"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$hash2=Opal.hash2,$send=Opal.send;return Opal.add_stubs(["$attr_reader","$==","$size","$set","$top","$>","$max","$[]","$last","$push","$pop","$private","$[]=","$-"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($MaxNumparamStack_set$10,$MaxNumparamStack_pop$9){var $MaxNumparamStack_set$10=$klass($MaxNumparamStack_set$10,null,"MaxNumparamStack"),$nesting=[$MaxNumparamStack_set$10].concat($MaxNumparamStack_pop$9);return $MaxNumparamStack_set$10.$$prototype.stack=nil,$MaxNumparamStack_set$10.$attr_reader("stack"),Opal.const_set($nesting[0],"ORDINARY_PARAMS",-1),Opal.def($MaxNumparamStack_set$10,"$initialize",$MaxNumparamStack_pop$9=function(){return this.stack=[]},$MaxNumparamStack_pop$9.$$arity=0),Opal.def($MaxNumparamStack_set$10,"$empty?",$MaxNumparamStack_pop$9=function(){return this.stack.$size()["$=="](0)},$MaxNumparamStack_pop$9.$$arity=0),Opal.def($MaxNumparamStack_set$10,"$has_ordinary_params!",$MaxNumparamStack_pop$9=function(){return this.$set($$($nesting,"ORDINARY_PARAMS"))},$MaxNumparamStack_pop$9.$$arity=0),Opal.def($MaxNumparamStack_set$10,"$has_ordinary_params?",$MaxNumparamStack_pop$9=function(){return this.$top()["$=="]($$($nesting,"ORDINARY_PARAMS"))},$MaxNumparamStack_pop$9.$$arity=0),Opal.def($MaxNumparamStack_set$10,"$has_numparams?",$MaxNumparamStack_pop$9=function(){var $ret_or_1,lhs,rhs;return $truthy($ret_or_1=this.$top())?(lhs=this.$top(),rhs=0,"number"==typeof lhs&&"number"==typeof rhs?rhs<lhs:lhs["$>"](rhs)):$ret_or_1},$MaxNumparamStack_pop$9.$$arity=0),Opal.def($MaxNumparamStack_set$10,"$register",$MaxNumparamStack_pop$9=function(numparam){return this.$set([this.$top(),numparam].$max())},$MaxNumparamStack_pop$9.$$arity=1),Opal.def($MaxNumparamStack_set$10,"$top",$MaxNumparamStack_pop$9=function(){return this.stack.$last()["$[]"]("value")},$MaxNumparamStack_pop$9.$$arity=0),Opal.def($MaxNumparamStack_set$10,"$push",$MaxNumparamStack_pop$9=function(static$){if(null==static$)static$=$hash2([],{});else if(!static$.$$is_hash)throw Opal.ArgumentError.$new("expected kwargs");if(!Opal.hasOwnProperty.call(static$.$$smap,"static"))throw Opal.ArgumentError.$new("missing keyword: static");return static$=static$.$$smap.static,this.stack.$push($hash2(["value","static"],{value:0,static:static$}))},$MaxNumparamStack_pop$9.$$arity=1),Opal.def($MaxNumparamStack_set$10,"$pop",$MaxNumparamStack_pop$9=function(){return this.stack.$pop()["$[]"]("value")},$MaxNumparamStack_pop$9.$$arity=0),$MaxNumparamStack_set$10.$private(),Opal.def($MaxNumparamStack_set$10,"$set",$MaxNumparamStack_set$10=function(rhs){var lhs=nil,lhs=["value",rhs];return $send(this.stack.$last(),"[]=",Opal.to_a(lhs)),lhs[rhs=1,"number"==typeof(lhs=lhs.length)&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)]},$MaxNumparamStack_set$10.$$arity=1),nil&&"set"}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/current_arg_stack"]=function(Opal){function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}Opal.top;var $nesting=[],nil=Opal.nil,$module=(Opal.$$$,Opal.$$,Opal.module),$klass=Opal.klass,$send=Opal.send;return Opal.add_stubs(["$attr_reader","$freeze","$==","$size","$<<","$-","$length","$[]=","$pop","$clear","$last"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($CurrentArgStack_top$7,$CurrentArgStack_reset$6){$CurrentArgStack_top$7=$klass($CurrentArgStack_top$7,null,"CurrentArgStack"),[$CurrentArgStack_top$7].concat($CurrentArgStack_reset$6);return $CurrentArgStack_top$7.$$prototype.stack=nil,$CurrentArgStack_top$7.$attr_reader("stack"),Opal.def($CurrentArgStack_top$7,"$initialize",$CurrentArgStack_reset$6=function(){return this.stack=[],this.$freeze()},$CurrentArgStack_reset$6.$$arity=0),Opal.def($CurrentArgStack_top$7,"$empty?",$CurrentArgStack_reset$6=function(){return this.stack.$size()["$=="](0)},$CurrentArgStack_reset$6.$$arity=0),Opal.def($CurrentArgStack_top$7,"$push",$CurrentArgStack_reset$6=function(value){return this.stack["$<<"](value)},$CurrentArgStack_reset$6.$$arity=1),Opal.def($CurrentArgStack_top$7,"$set",$CurrentArgStack_reset$6=function(value){var $writer=[$rb_minus(this.stack.$length(),1),value];return $send(this.stack,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]},$CurrentArgStack_reset$6.$$arity=1),Opal.def($CurrentArgStack_top$7,"$pop",$CurrentArgStack_reset$6=function(){return this.stack.$pop()},$CurrentArgStack_reset$6.$$arity=0),Opal.def($CurrentArgStack_top$7,"$reset",$CurrentArgStack_reset$6=function(){return this.stack.$clear()},$CurrentArgStack_reset$6.$$arity=0),Opal.def($CurrentArgStack_top$7,"$top",$CurrentArgStack_top$7=function(){return this.stack.$last()},$CurrentArgStack_top$7.$$arity=0),nil&&"top"}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/variables_stack"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass;return Opal.add_stubs(["$push","$empty?","$<<","$new","$pop","$clear","$last","$to_sym","$include?"]),function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($VariablesStack_declared$ques$7,$VariablesStack_declare$6){var $VariablesStack_declared$ques$7=$klass($VariablesStack_declared$ques$7,null,"VariablesStack"),$nesting=[$VariablesStack_declared$ques$7].concat($VariablesStack_declare$6);return $VariablesStack_declared$ques$7.$$prototype.stack=nil,Opal.def($VariablesStack_declared$ques$7,"$initialize",$VariablesStack_declare$6=function(){return 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$Base_process$15,$Base_error$16=$klass($base,$Base_error$16,"Base"),$nesting=[$Base_error$16].concat($Base_begin_with_stmts$14);return function($DummyLocation_last_line$8,$DummyLocation_column$7){var $nesting=[$DummyLocation_last_line$8=$klass($DummyLocation_last_line$8,null,"DummyLocation")].concat($DummyLocation_column$7);Opal.def($DummyLocation_last_line$8,"$node=",$DummyLocation_column$7=function($a){Opal.slice.call(arguments,0,arguments.length);return nil},$DummyLocation_column$7.$$arity=-1),Opal.def($DummyLocation_last_line$8,"$expression",$DummyLocation_column$7=function(){return this},$DummyLocation_column$7.$$arity=0),Opal.def($DummyLocation_last_line$8,"$begin_pos",$DummyLocation_column$7=function(){return 0},$DummyLocation_column$7.$$arity=0),Opal.def($DummyLocation_last_line$8,"$end_pos",$DummyLocation_column$7=function(){return 0},$DummyLocation_column$7.$$arity=0),Opal.def($DummyLocation_last_line$8,"$source",$DummyLocation_column$7=function(){return""},$DummyLocation_column$7.$$arity=0),Opal.def($DummyLocation_last_line$8,"$line",$DummyLocation_column$7=function(){return 0},$DummyLocation_column$7.$$arity=0),Opal.def($DummyLocation_last_line$8,"$column",$DummyLocation_column$7=function(){return 0},$DummyLocation_column$7.$$arity=0),Opal.def($DummyLocation_last_line$8,"$last_line",$DummyLocation_last_line$8=function(){return $$$($$($nesting,"Float"),"INFINITY")},$DummyLocation_last_line$8.$$arity=0)}($nesting[0],$nesting),Opal.const_set($nesting[0],"DUMMY_LOCATION",$$($nesting,"DummyLocation").$new()),Opal.def($Base_error$16,"$s",$Base_begin_with_stmts$14=function(type,$a){var self=this,children=Opal.slice.call(arguments,1,arguments.length),loc=$truthy(self.$current_node())?self.$current_node().$loc():$$($nesting,"DUMMY_LOCATION");return $$$($$$($$$("::","Opal"),"AST"),"Node").$new(type,children,$hash2(["location"],{location:loc}))},$Base_begin_with_stmts$14.$$arity=-2),Opal.defs($Base_error$16,"$s",$Base_begin_with_stmts$14=function(type,$a){var children=Opal.slice.call(arguments,1,arguments.length);return $$$($$$($$$("::","Opal"),"AST"),"Node").$new(type,children,$hash2(["location"],{location:$$($nesting,"DUMMY_LOCATION")}))},$Base_begin_with_stmts$14.$$arity=-2),$alias($Base_error$16,"on_iter","process_regular_node"),$alias($Base_error$16,"on_top","process_regular_node"),$alias($Base_error$16,"on_zsuper","process_regular_node"),$alias($Base_error$16,"on_jscall","on_send"),$alias($Base_error$16,"on_jsattr","process_regular_node"),$alias($Base_error$16,"on_jsattrasgn","process_regular_node"),$alias($Base_error$16,"on_kwsplat","process_regular_node"),Opal.def($Base_error$16,"$prepend_to_body",$Base_begin_with_stmts$14=function(body,node){var stmts=$rb_plus(this.$stmts_of(node),this.$stmts_of(body));return this.$begin_with_stmts(stmts)},$Base_begin_with_stmts$14.$$arity=2),Opal.def($Base_error$16,"$append_to_body",$Base_begin_with_stmts$14=function(body,node){var stmts=$rb_plus(this.$stmts_of(body),this.$stmts_of(node));return this.$begin_with_stmts(stmts)},$Base_begin_with_stmts$14.$$arity=2),Opal.def($Base_error$16,"$stmts_of",$Base_begin_with_stmts$14=function(node){return $truthy(node["$nil?"]())?[]:$truthy(["begin","kwbegin"]["$include?"](node.$type()))?node.$children():[node]},$Base_begin_with_stmts$14.$$arity=1),Opal.def($Base_error$16,"$begin_with_stmts",$Base_begin_with_stmts$14=function(stmts){var self=this,$case=nil;return $case=stmts.$length(),0["$==="]($case)?nil:1["$==="]($case)?stmts["$[]"](0):$send(self,"s",["begin"].concat(Opal.to_a(stmts)))},$Base_begin_with_stmts$14.$$arity=1),$Base_error$16.$attr_accessor("current_node"),Opal.def($Base_error$16,"$process",$Base_process$15=function(node){var $zuper_ii,$iter=$Base_process$15.$$p,self=this,$writer=nil,$zuper=nil,$zuper_i=nil;for($iter&&($Base_process$15.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return function(){try{return $writer=[node],$send(self,"current_node=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)],$send2(self,$find_super(self,"process",$Base_process$15,!1,!0),"process",$zuper,$iter)}finally{$writer=[nil],$send(self,"current_node=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]}}()},$Base_process$15.$$arity=1),Opal.def($Base_error$16,"$error",$Base_error$16=function(msg){var $writer,error=$$$($$$("::","Opal"),"RewritingError").$new(msg);return $truthy(this.$current_node())&&($writer=[this.$current_node().$loc()],$send(error,"location=",Opal.to_a($writer)),$rb_minus($writer.length,1)),this.$raise(error)},$Base_error$16.$$arity=1),nil&&"error"}($nesting[0],$$$($$$($$$("::","Parser"),"AST"),"Processor"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/opal_engine_check"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$send2=Opal.send2,$find_super=Opal.find_super;return Opal.add_stubs(["$require","$children","$skip_check_present?","$process","$s","$skip_check_present_not?","$=="]),self.$require("opal/rewriters/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Rewriters")].concat($nesting);return function($base,self,$OpalEngineCheck_skip_check_present_not$ques$3){var $OpalEngineCheck_on_if$1,self=$klass($base,self,"OpalEngineCheck"),$nesting=[self].concat($OpalEngineCheck_skip_check_present_not$ques$3);return Opal.def(self,"$on_if",$OpalEngineCheck_on_if$1=function(node){var $a,test,true_body,false_body,$zuper_ii,$iter=$OpalEngineCheck_on_if$1.$$p,self=this,$ret_or_1=nil,$ret_or_2=nil,$zuper=nil,$zuper_i=nil;for($iter&&($OpalEngineCheck_on_if$1.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return test=null==($a=[].concat(Opal.to_a(node.$children())))[0]?nil:$a[0],true_body=null==$a[1]?nil:$a[1],false_body=null==$a[2]?nil:$a[2],$truthy(self["$skip_check_present?"](test))?self.$process($truthy($ret_or_1=true_body)?$ret_or_1:self.$s("nil")):$truthy(self["$skip_check_present_not?"](test))?self.$process($truthy($ret_or_2=false_body)?$ret_or_2:self.$s("nil")):$send2(self,$find_super(self,"on_if",$OpalEngineCheck_on_if$1,!1,!0),"on_if",$zuper,$iter)},$OpalEngineCheck_on_if$1.$$arity=1),Opal.def(self,"$skip_check_present?",$OpalEngineCheck_skip_check_present_not$ques$3=function(test){var $ret_or_3;return $truthy($ret_or_3=test["$=="]($$($nesting,"RUBY_ENGINE_CHECK")))?$ret_or_3:test["$=="]($$($nesting,"RUBY_PLATFORM_CHECK"))},$OpalEngineCheck_skip_check_present_not$ques$3.$$arity=1),Opal.def(self,"$skip_check_present_not?",$OpalEngineCheck_skip_check_present_not$ques$3=function(test){var $ret_or_4;return $truthy($ret_or_4=test["$=="]($$($nesting,"RUBY_ENGINE_CHECK_NOT")))?$ret_or_4:test["$=="]($$($nesting,"RUBY_PLATFORM_CHECK_NOT"))},$OpalEngineCheck_skip_check_present_not$ques$3.$$arity=1),Opal.const_set($nesting[0],"RUBY_ENGINE_CHECK",self.$s("send",self.$s("const",nil,"RUBY_ENGINE"),"==",self.$s("str","opal"))),Opal.const_set($nesting[0],"RUBY_ENGINE_CHECK_NOT",self.$s("send",self.$s("const",nil,"RUBY_ENGINE"),"!=",self.$s("str","opal"))),Opal.const_set($nesting[0],"RUBY_PLATFORM_CHECK",self.$s("send",self.$s("const",nil,"RUBY_PLATFORM"),"==",self.$s("str","opal"))),Opal.const_set($nesting[0],"RUBY_PLATFORM_CHECK_NOT",self.$s("send",self.$s("const",nil,"RUBY_PLATFORM"),"!=",self.$s("str","opal")))}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/for_rewriter"]=function(Opal){function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send,$send2=Opal.send2,$find_super=Opal.find_super;return Opal.add_stubs(["$require","$+","$find","$map","$s","$next_tmp","$class","$type","$===","$<<","$prepend_to_body","$process","$attr_reader","$new","$to_a","$result"]),self.$require("opal/rewriters/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Rewriters")].concat($nesting);return function($base,$ForRewriter_on_for$3,$ForRewriter_next_tmp$2){var $ForRewriter_on_for$3=$klass($base,$ForRewriter_on_for$3,"ForRewriter"),$nesting=[$ForRewriter_on_for$3].concat($ForRewriter_next_tmp$2);return Opal.defs($ForRewriter_on_for$3,"$reset_tmp_counter!",$ForRewriter_next_tmp$2=function(){return this.counter=0},$ForRewriter_next_tmp$2.$$arity=0),Opal.defs($ForRewriter_on_for$3,"$next_tmp",$ForRewriter_next_tmp$2=function(){var self=this,$ret_or_1=nil;return null==self.counter&&(self.counter=nil),self.counter=$truthy($ret_or_1=self.counter)?$ret_or_1:0,self.counter=$rb_plus(self.counter,1),"$for_tmp"+self.counter},$ForRewriter_next_tmp$2.$$arity=0),Opal.def($ForRewriter_on_for$3,"$on_for",$ForRewriter_on_for$3=function(node){var $$4,self=this,loop_variable=nil,loop_variable_assignment=nil,$case=nil,$a=[].concat(Opal.to_a(node)),loop_variable=null==$a[0]?nil:$a[0],iterating_value=null==$a[1]?nil:$a[1],loop_body=null==$a[2]?nil:$a[2],iterating_lvars=$$($nesting,"LocalVariableAssigns").$find(loop_variable),lvars_declared_in_body=$$($nesting,"LocalVariableAssigns").$find(loop_body),outer_assigns=$send($rb_plus(iterating_lvars,lvars_declared_in_body),"map",[],(($$4=function(lvar_name){var self=null==$$4.$$s?this:$$4.$$s;return null==lvar_name&&(lvar_name=nil),self.$s("lvdeclare",lvar_name)}).$$s=self,$$4.$$arity=1,$$4)),tmp_loop_variable=self.$class().$next_tmp(),get_tmp_loop_variable=self.$s("js_tmp",tmp_loop_variable);return $case=loop_variable.$type(),loop_variable_assignment="mlhs"["$==="]($case)?self.$s("masgn",loop_variable,get_tmp_loop_variable):loop_variable["$<<"](get_tmp_loop_variable),loop_body=self.$prepend_to_body(loop_body,loop_variable_assignment),node=self.$s("send",iterating_value,"each",self.$s("iter",self.$s("args",self.$s("arg",tmp_loop_variable)),self.$process(loop_body))),$send(self,"s",["begin"].concat(Opal.to_a(outer_assigns)).concat([node]))},$ForRewriter_on_for$3.$$arity=1),function($base,self,$LocalVariableAssigns_initialize$6){var $LocalVariableAssigns_on_lvasgn$7,self=$klass($base,self,"LocalVariableAssigns"),$nesting=[self].concat($LocalVariableAssigns_initialize$6);return self.$attr_reader("result"),Opal.defs(self,"$find",$LocalVariableAssigns_initialize$6=function(node){var processor=nil;return(processor=this.$new()).$process(node),processor.$result().$to_a()},$LocalVariableAssigns_initialize$6.$$arity=1),Opal.def(self,"$initialize",$LocalVariableAssigns_initialize$6=function(){return this.result=$$($nesting,"Set").$new()},$LocalVariableAssigns_initialize$6.$$arity=0),Opal.def(self,"$on_lvasgn",$LocalVariableAssigns_on_lvasgn$7=function(node){var $a,name,$zuper_ii,$iter=$LocalVariableAssigns_on_lvasgn$7.$$p,$zuper=nil,$zuper_i=nil;for($iter&&($LocalVariableAssigns_on_lvasgn$7.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return name=null==($a=[].concat(Opal.to_a(node)))[0]?nil:$a[0],null==$a[1]||$a[1],this.$result()["$<<"](name),$send2(this,$find_super(this,"on_lvasgn",$LocalVariableAssigns_on_lvasgn$7,!1,!0),"on_lvasgn",$zuper,$iter)},$LocalVariableAssigns_on_lvasgn$7.$$arity=1),nil&&"on_lvasgn"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/explicit_writer_return"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$send2=Opal.send2,$find_super=Opal.find_super,$slice=Opal.slice,$send=Opal.send;return Opal.add_stubs(["$require","$s","$=~","$to_s","$==","$process_all","$updated"]),self.$require("opal/rewriters/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Rewriters")].concat($nesting);return function($base,self,$ExplicitWriterReturn_initialize$1){var $ExplicitWriterReturn_on_send$2,$ExplicitWriterReturn_on_masgn$3,self=$klass($base,self,"ExplicitWriterReturn"),$nesting=[self].concat($ExplicitWriterReturn_initialize$1);return self.$$prototype.in_masgn=nil,Opal.def(self,"$initialize",$ExplicitWriterReturn_initialize$1=function(){return this.in_masgn=!1},$ExplicitWriterReturn_initialize$1.$$arity=0),Opal.const_set($nesting[0],"TMP_NAME","$writer"),Opal.const_set($nesting[0],"GET_ARGS_NODE",self.$s("lvar",$$($nesting,"TMP_NAME"))),Opal.const_set($nesting[0],"RETURN_ARGS_NODE",self.$s("jsattr",$$($nesting,"GET_ARGS_NODE"),self.$s("send",self.$s("jsattr",$$($nesting,"GET_ARGS_NODE"),self.$s("str","length")),"-",self.$s("int",1)))),Opal.def(self,"$on_send",$ExplicitWriterReturn_on_send$2=function(node){var $a,recv,args,set_args_node,$zuper_ii,$iter=$ExplicitWriterReturn_on_send$2.$$p,method_name=nil,$ret_or_1=nil,$zuper=nil,$zuper_i=nil;for($iter&&($ExplicitWriterReturn_on_send$2.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return $truthy(this.in_masgn)?$send2(this,$find_super(this,"on_send",$ExplicitWriterReturn_on_send$2,!1,!0),"on_send",$zuper,$iter):(recv=null==($a=[].concat(Opal.to_a(node)))[0]?nil:$a[0],method_name=null==$a[1]?nil:$a[1],args=$slice.call($a,2),$truthy($truthy($ret_or_1=method_name.$to_s()["$=~"](Opal.regexp([$$($nesting,"REGEXP_START"),"\\w+=",$$($nesting,"REGEXP_END")])))?$ret_or_1:method_name.$to_s()["$=="]("[]="))?(set_args_node=this.$s("lvasgn",$$($nesting,"TMP_NAME"),$send(this,"s",["array"].concat(Opal.to_a(this.$process_all(args))))),this.$s("begin",set_args_node,node.$updated(nil,[recv,method_name,this.$s("splat",$$($nesting,"GET_ARGS_NODE"))]),$$($nesting,"RETURN_ARGS_NODE"))):$send2(this,$find_super(this,"on_send",$ExplicitWriterReturn_on_send$2,!1,!0),"on_send",$zuper,$iter))},$ExplicitWriterReturn_on_send$2.$$arity=1),Opal.def(self,"$on_masgn",$ExplicitWriterReturn_on_masgn$3=function(node){var result,$zuper_ii,$iter=$ExplicitWriterReturn_on_masgn$3.$$p,$zuper=nil,$zuper_i=nil;for($iter&&($ExplicitWriterReturn_on_masgn$3.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return this.in_masgn=!0,result=$send2(this,$find_super(this,"on_masgn",$ExplicitWriterReturn_on_masgn$3,!1,!0),"on_masgn",$zuper,$iter),this.in_masgn=!1,result},$ExplicitWriterReturn_on_masgn$3.$$arity=1),nil&&"on_masgn"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/regexp_anchors"]=function(Opal){Opal.top;var $nesting=[],$$=(Opal.nil,Opal.$$$,Opal.$$),$module=Opal.module;return Opal.add_stubs(["$new"]),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return Opal.const_set($nesting[0],"REGEXP_START","^"),Opal.const_set($nesting[0],"REGEXP_END","$"),Opal.const_set($nesting[0],"FORBIDDEN_STARTING_IDENTIFIER_CHARS","\\u0001-\\u002F\\u003A-\\u0040\\u005B-\\u005E\\u0060\\u007B-\\u007F"),Opal.const_set($nesting[0],"FORBIDDEN_ENDING_IDENTIFIER_CHARS","\\u0001-\\u0020\\u0022-\\u002F\\u003A-\\u003E\\u0040\\u005B-\\u005E\\u0060\\u007B-\\u007F"),Opal.const_set($nesting[0],"INLINE_IDENTIFIER_REGEXP",$$($nesting,"Regexp").$new("[^"+$$($nesting,"FORBIDDEN_STARTING_IDENTIFIER_CHARS")+"]*[^"+$$($nesting,"FORBIDDEN_ENDING_IDENTIFIER_CHARS")+"]")),Opal.const_set($nesting[0],"FORBIDDEN_CONST_NAME_CHARS","\\u0001-\\u0020\\u0021-\\u002F\\u003B-\\u003F\\u0040\\u005B-\\u005E\\u0060\\u007B-\\u007F"),Opal.const_set($nesting[0],"CONST_NAME_REGEXP",$$($nesting,"Regexp").$new($$($nesting,"REGEXP_START")+"(::)?[A-Z][^"+$$($nesting,"FORBIDDEN_CONST_NAME_CHARS")+"]*"+$$($nesting,"REGEXP_END")))}($nesting[0],$nesting)},Opal.modules["opal/rewriters/js_reserved_words"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$range=Opal.range,$send2=Opal.send2,$find_super=Opal.find_super,$hash2=Opal.hash2;return Opal.add_stubs(["$require","$freeze","$=~","$!","$valid_name?","$class","$to_sym","$valid_ivar_name?","$[]","$to_s","$updated","$fix_var_name","$fix_ivar_name"]),self.$require("opal/rewriters/base"),self.$require("opal/regexp_anchors"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Rewriters")].concat($nesting);return function($base,self,$JsReservedWords_on_restarg$9){var $JsReservedWords_on_lvar$5,$JsReservedWords_on_lvasgn$6,$JsReservedWords_on_ivar$7,$JsReservedWords_on_ivasgn$8,$JsReservedWords_on_argument$10,self=$klass($base,self,"JsReservedWords"),$nesting=[self].concat($JsReservedWords_on_restarg$9);return Opal.const_set($nesting[0],"ES51_RESERVED_WORD",Opal.regexp([$$($nesting,"REGEXP_START"),"(?:do|if|in|for|let|new|try|var|case|else|enum|eval|false|null|this|true|void|with|break|catch|class|const|super|throw|while|yield|delete|export|import|public|return|static|switch|typeof|default|extends|finally|package|private|continue|debugger|function|arguments|interface|protected|implements|instanceof)",$$($nesting,"REGEXP_END")]).$freeze()),Opal.const_set($nesting[0],"ES3_RESERVED_WORD_EXCLUSIVE",Opal.regexp([$$($nesting,"REGEXP_START"),"(?:int|byte|char|goto|long|final|float|short|double|native|throws|boolean|abstract|volatile|transient|synchronized)",$$($nesting,"REGEXP_END")]).$freeze()),Opal.const_set($nesting[0],"PROTO_SPECIAL_PROPS",Opal.regexp([$$($nesting,"REGEXP_START"),"(?:constructor|displayName|__proto__|__parent__|__noSuchMethod__|__count__)",$$($nesting,"REGEXP_END")]).$freeze()),Opal.const_set($nesting[0],"PROTO_SPECIAL_METHODS",Opal.regexp([$$($nesting,"REGEXP_START"),"(?:hasOwnProperty|valueOf)",$$($nesting,"REGEXP_END")]).$freeze()),Opal.const_set($nesting[0],"IMMUTABLE_PROPS",Opal.regexp([$$($nesting,"REGEXP_START"),"(?:NaN|Infinity|undefined)",$$($nesting,"REGEXP_END")]).$freeze()),Opal.const_set($nesting[0],"BASIC_IDENTIFIER_RULES",Opal.regexp([$$($nesting,"REGEXP_START"),"[$_a-z][$_a-z\\d]*",$$($nesting,"REGEXP_END")],"i").$freeze()),Opal.const_set($nesting[0],"RESERVED_FUNCTION_NAMES",Opal.regexp([$$($nesting,"REGEXP_START"),"(?:Array)",$$($nesting,"REGEXP_END")]).$freeze()),Opal.defs(self,"$valid_name?",$JsReservedWords_on_restarg$9=function(name){var $ret_or_1,$ret_or_2=nil,$ret_or_3=nil;return $truthy($ret_or_1=$$($nesting,"BASIC_IDENTIFIER_RULES")["$=~"](name))?($truthy($ret_or_2=$truthy($ret_or_3=$$($nesting,"ES51_RESERVED_WORD")["$=~"](name))?$ret_or_3:$$($nesting,"ES3_RESERVED_WORD_EXCLUSIVE")["$=~"](name))?$ret_or_2:$$($nesting,"IMMUTABLE_PROPS")["$=~"](name))["$!"]():$ret_or_1},$JsReservedWords_on_restarg$9.$$arity=1),Opal.defs(self,"$valid_ivar_name?",$JsReservedWords_on_restarg$9=function(name){var $ret_or_4=nil;return($truthy($ret_or_4=$$($nesting,"PROTO_SPECIAL_PROPS")["$=~"](name))?$ret_or_4:$$($nesting,"PROTO_SPECIAL_METHODS")["$=~"](name))["$!"]()},$JsReservedWords_on_restarg$9.$$arity=1),Opal.def(self,"$fix_var_name",$JsReservedWords_on_restarg$9=function(name){return $truthy(this.$class()["$valid_name?"](name))?name:(name+"$").$to_sym()},$JsReservedWords_on_restarg$9.$$arity=1),Opal.def(self,"$fix_ivar_name",$JsReservedWords_on_restarg$9=function(name){return $truthy(this.$class()["$valid_ivar_name?"](name.$to_s()["$[]"]($range(1,-1,!1))))?name:(name+"$").$to_sym()},$JsReservedWords_on_restarg$9.$$arity=1),Opal.def(self,"$on_lvar",$JsReservedWords_on_lvar$5=function(node){var name,$a=$JsReservedWords_on_lvar$5.$$p;return $a&&($JsReservedWords_on_lvar$5.$$p=null),name=null==($a=[].concat(Opal.to_a(node)))[0]?nil:$a[0],null==$a[1]||$a[1],node=node.$updated(nil,[this.$fix_var_name(name)]),$send2(this,$find_super(this,"on_lvar",$JsReservedWords_on_lvar$5,!1,!0),"on_lvar",[node],null)},$JsReservedWords_on_lvar$5.$$arity=1),Opal.def(self,"$on_lvasgn",$JsReservedWords_on_lvasgn$6=function(node){var name,value,$a=$JsReservedWords_on_lvasgn$6.$$p,self=this;return $a&&($JsReservedWords_on_lvasgn$6.$$p=null),$a=[].concat(Opal.to_a(node)),name=null==$a[0]?nil:$a[0],value=null==$a[1]?nil:$a[1],node=$truthy(value)?node.$updated(nil,[self.$fix_var_name(name),value]):node.$updated(nil,[self.$fix_var_name(name)]),$send2(self,$find_super(self,"on_lvasgn",$JsReservedWords_on_lvasgn$6,!1,!0),"on_lvasgn",[node],null)},$JsReservedWords_on_lvasgn$6.$$arity=1),Opal.def(self,"$on_ivar",$JsReservedWords_on_ivar$7=function(node){var name,$a=$JsReservedWords_on_ivar$7.$$p;return $a&&($JsReservedWords_on_ivar$7.$$p=null),name=null==($a=[].concat(Opal.to_a(node)))[0]?nil:$a[0],null==$a[1]||$a[1],node=node.$updated(nil,[this.$fix_ivar_name(name)]),$send2(this,$find_super(this,"on_ivar",$JsReservedWords_on_ivar$7,!1,!0),"on_ivar",[node],null)},$JsReservedWords_on_ivar$7.$$arity=1),Opal.def(self,"$on_ivasgn",$JsReservedWords_on_ivasgn$8=function(node){var name,value,$a=$JsReservedWords_on_ivasgn$8.$$p,self=this;return $a&&($JsReservedWords_on_ivasgn$8.$$p=null),$a=[].concat(Opal.to_a(node)),name=null==$a[0]?nil:$a[0],value=null==$a[1]?nil:$a[1],node=$truthy(value)?node.$updated(nil,[self.$fix_ivar_name(name),value]):node.$updated(nil,[self.$fix_ivar_name(name)]),$send2(self,$find_super(self,"on_ivasgn",$JsReservedWords_on_ivasgn$8,!1,!0),"on_ivasgn",[node],null)},$JsReservedWords_on_ivasgn$8.$$arity=1),Opal.def(self,"$on_restarg",$JsReservedWords_on_restarg$9=function(node){var $a=[].concat(Opal.to_a(node)),name=null==$a[0]?nil:$a[0];null==$a[1]||$a[1];return $truthy(name)&&(node=node.$updated(nil,[this.$fix_var_name(name)],$hash2(["meta"],{meta:$hash2(["arg_name"],{arg_name:name})}))),node},$JsReservedWords_on_restarg$9.$$arity=1),Opal.def(self,"$on_argument",$JsReservedWords_on_argument$10=function(node){var name,value,fixed_name,new_children,$a=$JsReservedWords_on_argument$10.$$p;return $a&&($JsReservedWords_on_argument$10.$$p=null),node=$send2(this,$find_super(this,"on_argument",$JsReservedWords_on_argument$10,!1,!0),"on_argument",[node],null),name=null==($a=[].concat(Opal.to_a(node)))[0]?nil:$a[0],value=null==$a[1]?nil:$a[1],fixed_name=this.$fix_var_name(name),new_children=$truthy(value)?[fixed_name,value]:[fixed_name],node.$updated(nil,new_children,$hash2(["meta"],{meta:$hash2(["arg_name"],{arg_name:name})}))},$JsReservedWords_on_argument$10.$$arity=1),nil&&"on_argument"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/block_to_iter"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super;return Opal.add_stubs(["$require","$s","$updated","$+","$children"]),self.$require("opal/rewriters/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Rewriters")].concat($nesting);return function($base,self,$parent_nesting){var $BlockToIter_on_block$1,self=$klass($base,self,"BlockToIter");[self].concat($parent_nesting);return Opal.def(self,"$on_block",$BlockToIter_on_block$1=function(node){var args,body,$zuper_ii,$a=$BlockToIter_on_block$1.$$p,lhs=nil,rhs=nil,$zuper=nil,$zuper_i=nil;for($a&&($BlockToIter_on_block$1.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return lhs=null==($a=[].concat(Opal.to_a($send2(this,$find_super(this,"on_block",$BlockToIter_on_block$1,!1,!0),"on_block",$zuper,$a))))[0]?nil:$a[0],args=null==$a[1]?nil:$a[1],body=null==$a[2]?nil:$a[2],rhs=this.$s("iter",args,body),lhs.$updated(nil,(lhs=lhs.$children(),rhs=[rhs],"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)))},$BlockToIter_on_block$1.$$arity=1),nil&&"on_block"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/dot_js_syntax"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$slice=Opal.slice,$truthy=Opal.truthy,$send2=Opal.send2,$find_super=Opal.find_super,$send=Opal.send;return Opal.add_stubs(["$require","$==","$type","$===","$!=","$size","$error","$first","$to_js_attr_call","$to_js_attr_assign_call","$to_native_js_call","$s"]),self.$require("opal/rewriters/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Rewriters")].concat($nesting);return function($base,$DotJsSyntax_to_js_attr_assign_call$4,$DotJsSyntax_to_js_attr_call$3){var $DotJsSyntax_on_send$1,$DotJsSyntax_to_js_attr_assign_call$4=$klass($base,$DotJsSyntax_to_js_attr_assign_call$4,"DotJsSyntax");[$DotJsSyntax_to_js_attr_assign_call$4].concat($DotJsSyntax_to_js_attr_call$3);return Opal.def($DotJsSyntax_to_js_attr_assign_call$4,"$on_send",$DotJsSyntax_on_send$1=function(node){var $a,meth,recv_of_recv,$case,value,$zuper_ii,$iter=$DotJsSyntax_on_send$1.$$p,recv=nil,args=nil,$ret_or_1=nil,meth_of_recv=nil,property=nil,$zuper=nil,$zuper_i=nil;for($iter&&($DotJsSyntax_on_send$1.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return $a=[].concat(Opal.to_a(node)),recv=null==$a[0]?nil:$a[0],meth=null==$a[1]?nil:$a[1],args=$slice.call($a,2),$truthy($truthy($ret_or_1=recv)?recv.$type()["$=="]("send"):$ret_or_1)?(recv_of_recv=null==($a=[].concat(Opal.to_a(recv)))[0]?nil:$a[0],meth_of_recv=null==$a[1]?nil:$a[1],null==$a[2]||$a[2],meth_of_recv["$=="]("JS")?(node="[]"["$==="]($case=meth)?($truthy(args.$size()["$!="](1))&&this.$error(".JS[:property] syntax supports only one argument"),property=args.$first(),this.$to_js_attr_call(recv_of_recv,property)):"[]="["$==="]($case)?($truthy(args.$size()["$!="](2))&&this.$error(".JS[:property]= syntax supports only two arguments"),property=null==($a=[].concat(Opal.to_a(args)))[0]?nil:$a[0],value=null==$a[1]?nil:$a[1],this.$to_js_attr_assign_call(recv_of_recv,property,value)):this.$to_native_js_call(recv_of_recv,meth,args),$send2(this,$find_super(this,"on_send",$DotJsSyntax_on_send$1,!1,!0),"on_send",[node],null)):$send2(this,$find_super(this,"on_send",$DotJsSyntax_on_send$1,!1,!0),"on_send",$zuper,$iter)):$send2(this,$find_super(this,"on_send",$DotJsSyntax_on_send$1,!1,!0),"on_send",$zuper,$iter)},$DotJsSyntax_on_send$1.$$arity=1),Opal.def($DotJsSyntax_to_js_attr_assign_call$4,"$to_native_js_call",$DotJsSyntax_to_js_attr_call$3=function(recv,meth,args){return $send(this,"s",["jscall",recv,meth].concat(Opal.to_a(args)))},$DotJsSyntax_to_js_attr_call$3.$$arity=3),Opal.def($DotJsSyntax_to_js_attr_assign_call$4,"$to_js_attr_call",$DotJsSyntax_to_js_attr_call$3=function(recv,property){return this.$s("jsattr",recv,property)},$DotJsSyntax_to_js_attr_call$3.$$arity=2),Opal.def($DotJsSyntax_to_js_attr_assign_call$4,"$to_js_attr_assign_call",$DotJsSyntax_to_js_attr_assign_call$4=function(recv,property,value){return this.$s("jsattrasgn",recv,property,value)},$DotJsSyntax_to_js_attr_assign_call$4.$$arity=3),nil&&"to_js_attr_assign_call"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/pattern_matching"]=function(Opal){function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$slice=Opal.slice,$truthy=Opal.truthy,$send=Opal.send,$alias=Opal.alias;return Opal.add_stubs(["$require","$s","$convert_full_pattern","$raise_no_matching_pattern_error","$+","$process","$single_case_match","$private","$shift","$type","$===","$!","$empty?","$!=","$==","$class","$new","$run!","$variables","$pattern","$map","$<<","$array","$on_literal","$first","$children","$to_proc","$method","$each","$to_ast","$on_array_pattern","$compact","$[]"]),self.$require("opal/rewriters/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Rewriters")].concat($nesting);return function($base,$PatternMatching_convert_full_pattern$7,$PatternMatching_single_case_match$6){var $PatternMatching_initialize$1,$PatternMatching_convert_full_pattern$7=$klass($base,$PatternMatching_convert_full_pattern$7,"PatternMatching"),$nesting=[$PatternMatching_convert_full_pattern$7].concat($PatternMatching_single_case_match$6);return $PatternMatching_convert_full_pattern$7.$$prototype.depth=nil,Opal.def($PatternMatching_convert_full_pattern$7,"$initialize",$PatternMatching_initialize$1=function(){var $zuper_ii,$iter=$PatternMatching_initialize$1.$$p,$zuper=nil,$zuper_i=nil;for($iter&&($PatternMatching_initialize$1.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return this.depth=0,$send2(this,$find_super(this,"initialize",$PatternMatching_initialize$1,!1,!0),"initialize",$zuper,$iter)},$PatternMatching_initialize$1.$$arity=0),Opal.def($PatternMatching_convert_full_pattern$7,"$on_match_pattern",$PatternMatching_single_case_match$6=function($a){var $a=[].concat(Opal.to_a($a)),from=null==$a[0]?nil:$a[0],pat=null==$a[1]?nil:$a[1];return this.$s("begin",this.$s("lvasgn","$pmvar",from),this.$s("if",this.$convert_full_pattern(from,pat),nil,this.$raise_no_matching_pattern_error("$pmvar")))},$PatternMatching_single_case_match$6.$$arity=1),Opal.def($PatternMatching_convert_full_pattern$7,"$on_match_pattern_p",$PatternMatching_single_case_match$6=function($a){var $a=[].concat(Opal.to_a($a)),from=null==$a[0]?nil:$a[0],pat=null==$a[1]?nil:$a[1];return this.$s("if",this.$convert_full_pattern(from,pat),this.$s("true"),this.$s("false"))},$PatternMatching_single_case_match$6.$$arity=1),Opal.def($PatternMatching_convert_full_pattern$7,"$on_case_match",$PatternMatching_single_case_match$6=function($b){var $a,from,cases,cmvar=nil,els=nil;return this.depth=$rb_plus(this.depth,1),cmvar="$cmvar"+this.depth,from=null==($a=[].concat(Opal.to_a($b)))[0]?nil:$a[0],$b=($b=$a.length-1)<1?1:$b,cases=$slice.call($a,1,$b),els=null==$a[$b]?nil:$a[$b],$truthy(els)?this.$process(els):els=this.$raise_no_matching_pattern_error(cmvar),this.$s("begin",this.$s("lvasgn",cmvar,from),$send(this,"single_case_match",[cmvar].concat(Opal.to_a(cases)).concat([els])))},$PatternMatching_single_case_match$6.$$arity=1),$PatternMatching_convert_full_pattern$7.$private(),Opal.def($PatternMatching_convert_full_pattern$7,"$raise_no_matching_pattern_error",$PatternMatching_single_case_match$6=function(from){return this.$s("send",nil,"raise",this.$s("const",nil,"NoMatchingPatternError"),this.$s("lvar",from))},$PatternMatching_single_case_match$6.$$arity=1),Opal.def($PatternMatching_convert_full_pattern$7,"$single_case_match",$PatternMatching_single_case_match$6=function(from,$a,$b){var body,guard,$case,self=this,$c=nil,pat=nil,if_guard=nil,$post_args=Opal.slice.call(arguments,1,arguments.length),cases=$post_args.splice(0,$post_args.length-1),els=$post_args[0];return $post_args.splice(0,1),null==els&&(els=nil),$c=cases.$shift(),pat=null==($c=[].concat(Opal.to_a($c)))[0]?nil:$c[0],if_guard=null==$c[1]?nil:$c[1],body=null==$c[2]?nil:$c[2],pat=self.$convert_full_pattern(from,pat),$truthy(if_guard)&&(guard=null==($c=[].concat(Opal.to_a(if_guard)))[0]?nil:$c[0],$case=if_guard.$type(),"if_guard"["$==="]($case)?pat=self.$s("and",pat,guard):"unless_guard"["$==="]($case)&&(pat=self.$s("and",pat,self.$s("send",guard,"!")))),self.$s("if",pat,self.$process(body),$truthy(cases["$empty?"]()["$!"]())?$send(self,"single_case_match",[from].concat(Opal.to_a(cases)).concat([els])):$truthy(els["$!="](self.$s("empty_else")))?els:nil)},$PatternMatching_single_case_match$6.$$arity=-3),Opal.def($PatternMatching_convert_full_pattern$7,"$convert_full_pattern",$PatternMatching_convert_full_pattern$7=function(from,pat){var converter=nil;return from.$class()["$=="]($$($nesting,"Symbol"))&&(from=this.$s("lvar",from)),(converter=$$($nesting,"PatternConverter").$new(pat))["$run!"](),this.$s("masgn",$send(this,"s",["mlhs"].concat(Opal.to_a(converter.$variables()))),this.$s("send",this.$s("const",this.$s("cbase"),"PatternMatching"),"call",from,converter.$pattern()))},$PatternMatching_convert_full_pattern$7.$$arity=2),function($base,$PatternConverter_to_ast$27,$PatternConverter_array$26){var $PatternConverter_to_ast$27=$klass($base,$PatternConverter_to_ast$27,"PatternConverter"),$nesting=[$PatternConverter_to_ast$27].concat($PatternConverter_array$26);return $PatternConverter_to_ast$27.$$prototype.pat=$PatternConverter_to_ast$27.$$prototype.outpat=$PatternConverter_to_ast$27.$$prototype.variables=nil,Opal.def($PatternConverter_to_ast$27,"$initialize",$PatternConverter_array$26=function(pat){return this.pat=pat,this.variables=[]},$PatternConverter_array$26.$$arity=1),Opal.def($PatternConverter_to_ast$27,"$run!",$PatternConverter_array$26=function(){return this.outpat=this.$process(this.pat)},$PatternConverter_array$26.$$arity=0),Opal.def($PatternConverter_to_ast$27,"$pattern",$PatternConverter_array$26=function(){return this.outpat},$PatternConverter_array$26.$$arity=0),Opal.def($PatternConverter_to_ast$27,"$variables",$PatternConverter_array$26=function(){var $$12;return $send(this.variables,"map",[],(($$12=function(i){var self=null==$$12.$$s?this:$$12.$$s;return null==i&&(i=nil),self.$s("lvasgn",i)}).$$s=this,$$12.$$arity=1,$$12))},$PatternConverter_array$26.$$arity=0),Opal.def($PatternConverter_to_ast$27,"$on_match_var",$PatternConverter_array$26=function($a){var $a=[].concat(Opal.to_a($a)),var$=null==$a[0]?nil:$a[0];return 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recvr=this.$s("js_tmp",recvr_tmp),recvr_is_nil=this.$s("send",recvr,"nil?"),plain_send=lhs.$updated("send",[recvr,meth].concat(Opal.to_a(args))),plain_op_asgn=this.$s("op_asgn",plain_send,operation,rhs),this.$s("begin",cache_recvr,this.$s("if",recvr_is_nil,this.$s("nil"),plain_op_asgn))},$ConditionalSendHandler_call$6.$$arity=3)}($nesting[0],self,$nesting),Opal.const_set($nesting[0],"HANDLERS",$hash2(["lvasgn","ivasgn","casgn","gvasgn","cvasgn","send","csend"],{lvasgn:$$($nesting,"LocalVariableHandler"),ivasgn:$$($nesting,"InstanceVariableHandler"),casgn:$$($nesting,"ConstantHandler"),gvasgn:$$($nesting,"GlobalVariableHandler"),cvasgn:$$($nesting,"ClassVariableHandler"),send:$$($nesting,"SendHandler"),csend:$$($nesting,"ConditionalSendHandler")}).$freeze()),Opal.def(self,"$on_op_asgn",$BinaryOperatorAssignment_on_op_asgn$7=function($a){var $$8,lhs=nil,$a=[].concat(Opal.to_a($a)),lhs=null==$a[0]?nil:$a[0],op=null==$a[1]?nil:$a[1],rhs=null==$a[2]?nil:$a[2],result=$send($$($nesting,"HANDLERS"),"fetch",[lhs.$type()],(($$8=function(){return(null==$$8.$$s?this:$$8.$$s).$error("cannot handle LHS type: "+lhs.$type())}).$$s=this,$$8.$$arity=0,$$8)).$call(lhs,op,rhs);return this.$process(result)},$BinaryOperatorAssignment_on_op_asgn$7.$$arity=1),Opal.const_set($nesting[0],"ASSIGNMENT_STRING_NODE",self.$s("str","assignment")),Opal.def(self,"$on_defined?",$BinaryOperatorAssignment_on_defined$ques$9=function(node){var $a=$BinaryOperatorAssignment_on_defined$ques$9.$$p,inner=nil;return $a&&($BinaryOperatorAssignment_on_defined$ques$9.$$p=null),inner=null==($a=[].concat(Opal.to_a(node)))[0]?nil:$a[0],null==$a[1]||$a[1],inner.$type()["$=="]("op_asgn")?$$($nesting,"ASSIGNMENT_STRING_NODE"):$send2(this,$find_super(this,"on_defined?",$BinaryOperatorAssignment_on_defined$ques$9,!1,!0),"on_defined?",[node],null)},$BinaryOperatorAssignment_on_defined$ques$9.$$arity=1),nil&&"on_defined?"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/hashes/key_duplicates_rewriter"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$truthy=Opal.truthy;return Opal.add_stubs(["$require","$new","$include?","$type","$<<","$==","$process_regular_node","$updated","$inspect","$warn"]),self.$require("opal/rewriters/base"),self.$require("set"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Rewriters")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Hashes")].concat($nesting);return function($base,$KeyDuplicatesRewriter_on_kwsplat$4,$KeyDuplicatesRewriter_initialize$1){var $KeyDuplicatesRewriter_on_hash$2,$KeyDuplicatesRewriter_on_pair$3,$KeyDuplicatesRewriter_on_kwsplat$4=$klass($base,$KeyDuplicatesRewriter_on_kwsplat$4,"KeyDuplicatesRewriter"),$nesting=[$KeyDuplicatesRewriter_on_kwsplat$4].concat($KeyDuplicatesRewriter_initialize$1);return $KeyDuplicatesRewriter_on_kwsplat$4.$$prototype.keys=nil,Opal.def($KeyDuplicatesRewriter_on_kwsplat$4,"$initialize",$KeyDuplicatesRewriter_initialize$1=function(){return this.keys=$$($nesting,"UniqKeysSet").$new()},$KeyDuplicatesRewriter_initialize$1.$$arity=0),Opal.def($KeyDuplicatesRewriter_on_kwsplat$4,"$on_hash",$KeyDuplicatesRewriter_on_hash$2=function(node){var $a,$iter=$KeyDuplicatesRewriter_on_hash$2.$$p,self=this,previous_keys=nil;return $iter&&($KeyDuplicatesRewriter_on_hash$2.$$p=null),function(){try{return $a=[self.keys,$$($nesting,"UniqKeysSet").$new()],previous_keys=$a[0],self.keys=$a[1],$send2(self,$find_super(self,"on_hash",$KeyDuplicatesRewriter_on_hash$2,!1,!0),"on_hash",[node],null)}finally{self.keys=previous_keys}}()},$KeyDuplicatesRewriter_on_hash$2.$$arity=1),Opal.def($KeyDuplicatesRewriter_on_kwsplat$4,"$on_pair",$KeyDuplicatesRewriter_on_pair$3=function(node){var $a=$KeyDuplicatesRewriter_on_pair$3.$$p,key=nil;return $a&&($KeyDuplicatesRewriter_on_pair$3.$$p=null),key=null==($a=[].concat(Opal.to_a(node)))[0]?nil:$a[0],null==$a[1]||$a[1],$truthy(["str","sym"]["$include?"](key.$type()))&&this.keys["$<<"](key),$send2(this,$find_super(this,"on_pair",$KeyDuplicatesRewriter_on_pair$3,!1,!0),"on_pair",[node],null)},$KeyDuplicatesRewriter_on_pair$3.$$arity=1),Opal.def($KeyDuplicatesRewriter_on_kwsplat$4,"$on_kwsplat",$KeyDuplicatesRewriter_on_kwsplat$4=function(node){var hash=nil,$a=[].concat(Opal.to_a(node)),hash=null==$a[0]?nil:$a[0];null==$a[1]||$a[1];return hash.$type()["$=="]("hash")&&(hash=this.$process_regular_node(hash)),node.$updated(nil,[hash])},$KeyDuplicatesRewriter_on_kwsplat$4.$$arity=1),function($UniqKeysSet_$lt$lt$6,$UniqKeysSet_initialize$5){var $UniqKeysSet_$lt$lt$6=$klass($UniqKeysSet_$lt$lt$6,null,"UniqKeysSet"),$nesting=[$UniqKeysSet_$lt$lt$6].concat($UniqKeysSet_initialize$5);return $UniqKeysSet_$lt$lt$6.$$prototype.set=nil,Opal.def($UniqKeysSet_$lt$lt$6,"$initialize",$UniqKeysSet_initialize$5=function(){return this.set=$$($nesting,"Set").$new()},$UniqKeysSet_initialize$5.$$arity=0),Opal.def($UniqKeysSet_$lt$lt$6,"$<<",$UniqKeysSet_$lt$lt$6=function(element){var $a,key=nil;return $truthy(this.set["$include?"](element))?($a=[].concat(Opal.to_a(element)),key=null==$a[0]?nil:$a[0],null==$a[1]||$a[1],key=element.$type()["$=="]("str")?key.$inspect():":"+key,$$($nesting,"Kernel").$warn("warning: key "+key+" is duplicated and overwritten")):this.set["$<<"](element)},$UniqKeysSet_$lt$lt$6.$$arity=1),nil&&"<<"}($nesting[0],$nesting)}($nesting[0],$$$($$$($$$("::","Opal"),"Rewriters"),"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/dump_args"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$hash2=Opal.hash2;return Opal.add_stubs(["$require","$updated"]),self.$require("opal/rewriters/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Rewriters")].concat($nesting);return function($base,self,$parent_nesting){var $DumpArgs_on_def$1,$DumpArgs_on_defs$2,$DumpArgs_on_iter$3,self=$klass($base,self,"DumpArgs");[self].concat($parent_nesting);return Opal.def(self,"$on_def",$DumpArgs_on_def$1=function(node){var args,$a=$DumpArgs_on_def$1.$$p;return $a&&($DumpArgs_on_def$1.$$p=null),node=$send2(this,$find_super(this,"on_def",$DumpArgs_on_def$1,!1,!0),"on_def",[node],null),null==($a=[].concat(Opal.to_a(node)))[0]||$a[0],args=null==$a[1]?nil:$a[1],null==$a[2]||$a[2],node.$updated(nil,nil,$hash2(["meta"],{meta:$hash2(["original_args"],{original_args:args})}))},$DumpArgs_on_def$1.$$arity=1),Opal.def(self,"$on_defs",$DumpArgs_on_defs$2=function(node){var args,$a=$DumpArgs_on_defs$2.$$p;return $a&&($DumpArgs_on_defs$2.$$p=null),node=$send2(this,$find_super(this,"on_defs",$DumpArgs_on_defs$2,!1,!0),"on_defs",[node],null),null==($a=[].concat(Opal.to_a(node)))[0]||$a[0],null==$a[1]||$a[1],args=null==$a[2]?nil:$a[2],null==$a[3]||$a[3],node.$updated(nil,nil,$hash2(["meta"],{meta:$hash2(["original_args"],{original_args:args})}))},$DumpArgs_on_defs$2.$$arity=1),Opal.def(self,"$on_iter",$DumpArgs_on_iter$3=function(node){var args,$a=$DumpArgs_on_iter$3.$$p;return $a&&($DumpArgs_on_iter$3.$$p=null),node=$send2(this,$find_super(this,"on_iter",$DumpArgs_on_iter$3,!1,!0),"on_iter",[node],null),args=null==($a=[].concat(Opal.to_a(node)))[0]?nil:$a[0],null==$a[1]||$a[1],node.$updated(nil,nil,$hash2(["meta"],{meta:$hash2(["original_args"],{original_args:args})}))},$DumpArgs_on_iter$3.$$arity=1),nil&&"on_iter"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/mlhs_args"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$truthy=Opal.truthy,$send=Opal.send,$hash2=Opal.hash2;return Opal.add_stubs(["$require","$new","$updated","$rewritten","$initialization","$s","$prepend_to_body","$attr_reader","$split!","$+","$each","$children","$==","$type","$new_mlhs_tmp","$process","$<<","$length","$[]","$empty?"]),self.$require("opal/rewriters/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Rewriters")].concat($nesting);return function($base,self,$parent_nesting){var $MlhsArgs_on_def$1,$MlhsArgs_on_defs$2,$MlhsArgs_on_iter$3,self=$klass($base,self,"MlhsArgs"),$nesting=[self].concat($parent_nesting);return Opal.def(self,"$on_def",$MlhsArgs_on_def$1=function(node){var mid,$a=$MlhsArgs_on_def$1.$$p,self=this,args=nil,body=nil,arguments$=nil,$ret_or_1=nil;return $a&&($MlhsArgs_on_def$1.$$p=null),node=$send2(self,$find_super(self,"on_def",$MlhsArgs_on_def$1,!1,!0),"on_def",[node],null),mid=null==($a=[].concat(Opal.to_a(node)))[0]?nil:$a[0],args=null==$a[1]?nil:$a[1],body=null==$a[2]?nil:$a[2],arguments$=$$($nesting,"Arguments").$new(args),args=args.$updated(nil,arguments$.$rewritten()),$truthy(arguments$.$initialization())&&(body=$truthy($ret_or_1=body)?$ret_or_1:self.$s("nil"),body=self.$prepend_to_body(body,arguments$.$initialization())),node.$updated(nil,[mid,args,body])},$MlhsArgs_on_def$1.$$arity=1),Opal.def(self,"$on_defs",$MlhsArgs_on_defs$2=function(node){var recv,mid,$a=$MlhsArgs_on_defs$2.$$p,self=this,args=nil,body=nil,arguments$=nil,$ret_or_2=nil;return $a&&($MlhsArgs_on_defs$2.$$p=null),node=$send2(self,$find_super(self,"on_defs",$MlhsArgs_on_defs$2,!1,!0),"on_defs",[node],null),recv=null==($a=[].concat(Opal.to_a(node)))[0]?nil:$a[0],mid=null==$a[1]?nil:$a[1],args=null==$a[2]?nil:$a[2],body=null==$a[3]?nil:$a[3],arguments$=$$($nesting,"Arguments").$new(args),args=args.$updated(nil,arguments$.$rewritten()),$truthy(arguments$.$initialization())&&(body=$truthy($ret_or_2=body)?$ret_or_2:self.$s("nil"),body=self.$prepend_to_body(body,arguments$.$initialization())),node.$updated(nil,[recv,mid,args,body])},$MlhsArgs_on_defs$2.$$arity=1),Opal.def(self,"$on_iter",$MlhsArgs_on_iter$3=function(node){var $a=$MlhsArgs_on_iter$3.$$p,self=this,args=nil,body=nil,arguments$=nil,$ret_or_3=nil;return $a&&($MlhsArgs_on_iter$3.$$p=null),node=$send2(self,$find_super(self,"on_iter",$MlhsArgs_on_iter$3,!1,!0),"on_iter",[node],null),args=null==($a=[].concat(Opal.to_a(node)))[0]?nil:$a[0],body=null==$a[1]?nil:$a[1],arguments$=$$($nesting,"Arguments").$new(args),args=args.$updated(nil,arguments$.$rewritten()),$truthy(arguments$.$initialization())&&(body=$truthy($ret_or_3=body)?$ret_or_3:self.$s("nil"),body=self.$prepend_to_body(body,arguments$.$initialization())),node.$updated(nil,[args,body])},$MlhsArgs_on_iter$3.$$arity=1),function($base,$Arguments_split$excl$7,$Arguments_new_mlhs_tmp$6){var $nesting=[$Arguments_split$excl$7=$klass($base,$Arguments_split$excl$7,"Arguments")].concat($Arguments_new_mlhs_tmp$6);$Arguments_split$excl$7.$$prototype.counter=$Arguments_split$excl$7.$$prototype.args=$Arguments_split$excl$7.$$prototype.initialization=nil,$Arguments_split$excl$7.$attr_reader("rewritten","initialization"),Opal.def($Arguments_split$excl$7,"$initialize",$Arguments_new_mlhs_tmp$6=function(args){return this.args=args,this.rewritten=[],this.initialization=[],this.rewriter=$$($nesting,"MlhsRewriter").$new(),this["$split!"]()},$Arguments_new_mlhs_tmp$6.$$arity=1),Opal.def($Arguments_split$excl$7,"$reset_tmp_counter!",$Arguments_new_mlhs_tmp$6=function(){return this.counter=0},$Arguments_new_mlhs_tmp$6.$$arity=0),Opal.def($Arguments_split$excl$7,"$new_mlhs_tmp",$Arguments_new_mlhs_tmp$6=function(){var lhs,self=this,rhs=nil;return self.counter=$truthy(rhs=self.counter)?rhs:0,self.counter=(lhs=self.counter,rhs=1,"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)),"$mlhs_tmp"+self.counter},$Arguments_new_mlhs_tmp$6.$$arity=0),Opal.def($Arguments_split$excl$7,"$split!",$Arguments_split$excl$7=function(){var $$8;return $send(this.args.$children(),"each",[],(($$8=function(arg){var var_name,rhs,mlhs,self=null==$$8.$$s?this:$$8.$$s;return null==self.rewriter&&(self.rewriter=nil),null==self.initialization&&(self.initialization=nil),null==self.rewritten&&(self.rewritten=nil),null==arg&&(arg=nil),arg.$type()["$=="]("mlhs")?(var_name=self.$new_mlhs_tmp(),rhs=self.$s("lvar",var_name),mlhs=self.rewriter.$process(arg),self.initialization["$<<"](self.$s("masgn",mlhs,rhs)),self.rewritten["$<<"](self.$s("arg",var_name).$updated(nil,nil,$hash2(["meta"],{meta:$hash2(["arg_name"],{arg_name:var_name})})))):self.rewritten["$<<"](arg)}).$$s=this,$$8.$$arity=1,$$8)),this.initialization.$length()["$=="](1)?this.initialization=this.initialization["$[]"](0):$truthy(this.initialization["$empty?"]())?this.initialization=nil:this.initialization=$send(this,"s",["begin"].concat(Opal.to_a(this.initialization)))},$Arguments_split$excl$7.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$MlhsRewriter_on_restarg$10,$MlhsRewriter_on_arg$9){$MlhsRewriter_on_restarg$10=$klass($base,$MlhsRewriter_on_restarg$10,"MlhsRewriter"),[$MlhsRewriter_on_restarg$10].concat($MlhsRewriter_on_arg$9);return Opal.def($MlhsRewriter_on_restarg$10,"$on_arg",$MlhsRewriter_on_arg$9=function(node){return node.$updated("lvasgn")},$MlhsRewriter_on_arg$9.$$arity=1),Opal.def($MlhsRewriter_on_restarg$10,"$on_restarg",$MlhsRewriter_on_restarg$10=function(node){var name=node.$children()["$[]"](0);return $truthy(name)?this.$s("splat",node.$updated("lvasgn")):this.$s("splat")},$MlhsRewriter_on_restarg$10.$$arity=1),nil&&"on_restarg"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/arguments"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$module=(Opal.$$$,Opal.$$,Opal.module),$klass=Opal.klass,$send=Opal.send,$truthy=Opal.truthy;return Opal.add_stubs(["$attr_reader","$each","$type","$===","$<<","$any?","$raise","$!","$nil?","$has_any_kwargs?","$can_inline_kwargs?","$empty?"]),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Rewriters")].concat($nesting);return function($Arguments_can_inline_kwargs$ques$5,$Arguments_has_any_kwargs$ques$4){$Arguments_can_inline_kwargs$ques$5=$klass($Arguments_can_inline_kwargs$ques$5,null,"Arguments"),[$Arguments_can_inline_kwargs$ques$5].concat($Arguments_has_any_kwargs$ques$4);return $Arguments_can_inline_kwargs$ques$5.$$prototype.restarg=$Arguments_can_inline_kwargs$ques$5.$$prototype.postargs=$Arguments_can_inline_kwargs$ques$5.$$prototype.kwargs=$Arguments_can_inline_kwargs$ques$5.$$prototype.kwoptargs=$Arguments_can_inline_kwargs$ques$5.$$prototype.kwrestarg=$Arguments_can_inline_kwargs$ques$5.$$prototype.optargs=nil,$Arguments_can_inline_kwargs$ques$5.$attr_reader("args","optargs","restarg","postargs","kwargs","kwoptargs","kwrestarg","kwnilarg","shadowargs","blockarg"),Opal.def($Arguments_can_inline_kwargs$ques$5,"$initialize",$Arguments_has_any_kwargs$ques$4=function(args){var $$2;return this.args=[],this.optargs=[],this.restarg=nil,this.postargs=[],this.kwargs=[],this.kwoptargs=[],this.kwrestarg=nil,this.kwnilarg=!1,this.shadowargs=[],this.blockarg=nil,$send(args,"each",[],(($$2=function(arg){var self=null==$$2.$$s?this:$$2.$$s,$case=nil,$ret_or_1=nil;return null==self.restarg&&(self.restarg=nil),null==self.optargs&&(self.optargs=nil),null==self.postargs&&(self.postargs=nil),null==self.args&&(self.args=nil),null==self.kwargs&&(self.kwargs=nil),null==self.kwoptargs&&(self.kwoptargs=nil),null==self.shadowargs&&(self.shadowargs=nil),null==arg&&(arg=nil),$case=arg.$type(),"arg"["$==="]($case)||"mlhs"["$==="]($case)?($truthy($truthy($ret_or_1=self.restarg)?$ret_or_1:self.optargs["$any?"]())?self.postargs:self.args)["$<<"](arg):"optarg"["$==="]($case)?self.optargs["$<<"](arg):"restarg"["$==="]($case)?self.restarg=arg:"kwarg"["$==="]($case)?self.kwargs["$<<"](arg):"kwoptarg"["$==="]($case)?self.kwoptargs["$<<"](arg):"kwnilarg"["$==="]($case)?self.kwnilarg=!0:"kwrestarg"["$==="]($case)?self.kwrestarg=arg:"shadowarg"["$==="]($case)?self.shadowargs["$<<"](arg):"blockarg"["$==="]($case)?self.blockarg=arg:self.$raise("Unsupported arg type "+arg.$type())}).$$s=this,$$2.$$arity=1,$$2))},$Arguments_has_any_kwargs$ques$4.$$arity=1),Opal.def($Arguments_can_inline_kwargs$ques$5,"$has_post_args?",$Arguments_has_any_kwargs$ques$4=function(){var $ret_or_2,$ret_or_4,self=this,$ret_or_3=nil;return $truthy($ret_or_2=$truthy($ret_or_3=self.restarg["$nil?"]()["$!"]())?$ret_or_3:self.postargs["$any?"]())?$ret_or_2:$truthy($ret_or_4=self["$has_any_kwargs?"]())?self["$can_inline_kwargs?"]()["$!"]():$ret_or_4},$Arguments_has_any_kwargs$ques$4.$$arity=0),Opal.def($Arguments_can_inline_kwargs$ques$5,"$has_any_kwargs?",$Arguments_has_any_kwargs$ques$4=function(){var $ret_or_5,self=this,$ret_or_6=nil;return $truthy($ret_or_5=$truthy($ret_or_6=self.kwargs["$any?"]())?$ret_or_6:self.kwoptargs["$any?"]())?$ret_or_5:self.kwrestarg["$nil?"]()["$!"]()},$Arguments_has_any_kwargs$ques$4.$$arity=0),Opal.def($Arguments_can_inline_kwargs$ques$5,"$can_inline_kwargs?",$Arguments_can_inline_kwargs$ques$5=function(){var $ret_or_7,self=this,$ret_or_8=nil;return $truthy($ret_or_7=$truthy($ret_or_8=self.optargs["$empty?"]())?self.restarg["$nil?"]():$ret_or_8)?self.postargs["$empty?"]():$ret_or_7},$Arguments_can_inline_kwargs$ques$5.$$arity=0),nil&&"can_inline_kwargs?"}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/inline_args"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$truthy=Opal.truthy,$hash2=Opal.hash2,$send=Opal.send;return Opal.add_stubs(["$require","$s","$new","$updated","$inline","$prepend_to_body","$initialization","$attr_reader","$freeze","$children","$each","$send","$any?","$blockarg","$<<","$shadowargs","$args","$==","$[]","$has_post_args?","$length","$has_any_kwargs?","$can_inline_kwargs?","$kwargs","$kwoptargs","$kwrestarg","$postargs","$optargs","$args_to_keep","$restarg"]),self.$require("opal/rewriters/base"),self.$require("opal/rewriters/arguments"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Rewriters")].concat($nesting);return function($base,self,$parent_nesting){var $InlineArgs_on_def$1,$InlineArgs_on_defs$2,$InlineArgs_on_iter$3,self=$klass($base,self,"InlineArgs"),$nesting=[self].concat($parent_nesting);return Opal.def(self,"$on_def",$InlineArgs_on_def$1=function(node){var mid,inline_args,$a=$InlineArgs_on_def$1.$$p,self=this,args=nil,body=nil,$ret_or_1=nil,initializer=nil;return $a&&($InlineArgs_on_def$1.$$p=null),node=$send2(self,$find_super(self,"on_def",$InlineArgs_on_def$1,!1,!0),"on_def",[node],null),mid=null==($a=[].concat(Opal.to_a(node)))[0]?nil:$a[0],args=null==$a[1]?nil:$a[1],body=null==$a[2]?nil:$a[2],body=$truthy($ret_or_1=body)?$ret_or_1:self.$s("nil"),initializer=$$($nesting,"Initializer").$new(args,$hash2(["type"],{type:"def"})),inline_args=args.$updated(nil,initializer.$inline()),body=self.$prepend_to_body(body,initializer.$initialization()),node.$updated(nil,[mid,inline_args,body])},$InlineArgs_on_def$1.$$arity=1),Opal.def(self,"$on_defs",$InlineArgs_on_defs$2=function(node){var recv,mid,inline_args,$a=$InlineArgs_on_defs$2.$$p,self=this,args=nil,body=nil,$ret_or_2=nil,initializer=nil;return $a&&($InlineArgs_on_defs$2.$$p=null),node=$send2(self,$find_super(self,"on_defs",$InlineArgs_on_defs$2,!1,!0),"on_defs",[node],null),recv=null==($a=[].concat(Opal.to_a(node)))[0]?nil:$a[0],mid=null==$a[1]?nil:$a[1],args=null==$a[2]?nil:$a[2],body=null==$a[3]?nil:$a[3],body=$truthy($ret_or_2=body)?$ret_or_2:self.$s("nil"),initializer=$$($nesting,"Initializer").$new(args,$hash2(["type"],{type:"defs"})),inline_args=args.$updated(nil,initializer.$inline()),body=self.$prepend_to_body(body,initializer.$initialization()),node.$updated(nil,[recv,mid,inline_args,body])},$InlineArgs_on_defs$2.$$arity=1),Opal.def(self,"$on_iter",$InlineArgs_on_iter$3=function(node){var inline_args,$a=$InlineArgs_on_iter$3.$$p,self=this,args=nil,body=nil,$ret_or_3=nil,initializer=nil;return $a&&($InlineArgs_on_iter$3.$$p=null),node=$send2(self,$find_super(self,"on_iter",$InlineArgs_on_iter$3,!1,!0),"on_iter",[node],null),args=null==($a=[].concat(Opal.to_a(node)))[0]?nil:$a[0],body=null==$a[1]?nil:$a[1],body=$truthy($ret_or_3=body)?$ret_or_3:self.$s("nil"),initializer=$$($nesting,"Initializer").$new(args,$hash2(["type"],{type:"iter"})),inline_args=args.$updated(nil,initializer.$inline()),body=self.$prepend_to_body(body,initializer.$initialization()),node.$updated(nil,[inline_args,body])},$InlineArgs_on_iter$3.$$arity=1),function($base,$Initializer_args_to_keep$23,$Initializer_extract_restarg$22){var $Initializer_args_to_keep$23=$klass($base,$Initializer_args_to_keep$23,"Initializer"),$nesting=[$Initializer_args_to_keep$23].concat($Initializer_extract_restarg$22);return $Initializer_args_to_keep$23.$$prototype.initialization=$Initializer_args_to_keep$23.$$prototype.args=$Initializer_args_to_keep$23.$$prototype.inline=nil,$Initializer_args_to_keep$23.$attr_reader("inline","initialization"),Opal.const_set($nesting[0],"STEPS",["extract_blockarg","initialize_shadowargs","extract_args","prepare_post_args","prepare_kwargs","extract_optargs","extract_restarg","extract_post_args","extract_kwargs","extract_kwoptargs","extract_kwrestarg"].$freeze()),Opal.def($Initializer_args_to_keep$23,"$initialize",$Initializer_extract_restarg$22=function(args,type){var $$5;if(null==type)type=$hash2([],{});else if(!type.$$is_hash)throw Opal.ArgumentError.$new("expected kwargs");if(!Opal.hasOwnProperty.call(type.$$smap,"type"))throw Opal.ArgumentError.$new("missing keyword: type");return type=type.$$smap.type,this.args=$$($nesting,"Arguments").$new(args.$children()),this.inline=[],this.initialization=[],this.type=type,this.underscore_found=!1,$send($$($nesting,"STEPS"),"each",[],(($$5=function(step){var self=null==$$5.$$s?this:$$5.$$s;return null==step&&(step=nil),self.$send(step)}).$$s=this,$$5.$$arity=1,$$5)),$truthy(this.initialization["$any?"]())?this.initialization=$send(this,"s",["begin"].concat(Opal.to_a(this.initialization))):this.initialization=nil},$Initializer_extract_restarg$22.$$arity=2),Opal.def($Initializer_args_to_keep$23,"$extract_blockarg",$Initializer_extract_restarg$22=function(){var arg=nil;return $truthy(arg=this.args.$blockarg())?this.initialization["$<<"](arg.$updated("extract_blockarg")):nil},$Initializer_extract_restarg$22.$$arity=0),Opal.def($Initializer_args_to_keep$23,"$initialize_shadowargs",$Initializer_extract_restarg$22=function(){var $$8;return $send(this.args.$shadowargs(),"each",[],(($$8=function(arg){var self=null==$$8.$$s?this:$$8.$$s;return null==self.initialization&&(self.initialization=nil),null==arg&&(arg=nil),self.initialization["$<<"](arg.$updated("initialize_shadowarg"))}).$$s=this,$$8.$$arity=1,$$8))},$Initializer_extract_restarg$22.$$arity=0),Opal.def($Initializer_args_to_keep$23,"$extract_args",$Initializer_extract_restarg$22=function(){var $$10;return $send(this.args.$args(),"each",[],(($$10=function(arg){var self=null==$$10.$$s?this:$$10.$$s;return null==self.type&&(self.type=nil),null==self.initialization&&(self.initialization=nil),null==self.underscore_found&&(self.underscore_found=nil),null==self.inline&&(self.inline=nil),null==arg&&(arg=nil),self.type["$=="]("iter")&&(self.initialization["$<<"](arg.$updated("initialize_iter_arg")),arg.$children()["$[]"](0)["$=="]("_")&&($truthy(self.underscore_found)&&(arg=self.$s("fake_arg")),self.underscore_found=!0)),self.inline["$<<"](arg)}).$$s=this,$$10.$$arity=1,$$10))},$Initializer_extract_restarg$22.$$arity=0),Opal.def($Initializer_args_to_keep$23,"$prepare_post_args",$Initializer_extract_restarg$22=function(){return $truthy(this.args["$has_post_args?"]())?this.initialization["$<<"](this.$s("prepare_post_args",this.args.$args().$length())):nil},$Initializer_extract_restarg$22.$$arity=0),Opal.def($Initializer_args_to_keep$23,"$prepare_kwargs",$Initializer_extract_restarg$22=function(){return $truthy(this.args["$has_any_kwargs?"]())?($truthy(this.args["$can_inline_kwargs?"]())?this.inline["$<<"](this.$s("arg","$kwargs")):(this.initialization["$<<"](this.$s("extract_kwargs")),this.inline["$<<"](this.$s("fake_arg"))),this.initialization["$<<"](this.$s("ensure_kwargs_are_kwargs"))):nil},$Initializer_extract_restarg$22.$$arity=0),Opal.def($Initializer_args_to_keep$23,"$extract_kwargs",$Initializer_extract_restarg$22=function(){var $$14;return $send(this.args.$kwargs(),"each",[],(($$14=function(arg){var self=null==$$14.$$s?this:$$14.$$s;return null==self.initialization&&(self.initialization=nil),null==arg&&(arg=nil),self.initialization["$<<"](arg.$updated("extract_kwarg"))}).$$s=this,$$14.$$arity=1,$$14))},$Initializer_extract_restarg$22.$$arity=0),Opal.def($Initializer_args_to_keep$23,"$extract_kwoptargs",$Initializer_extract_restarg$22=function(){var $$16;return $send(this.args.$kwoptargs(),"each",[],(($$16=function(arg){var self=null==$$16.$$s?this:$$16.$$s;return null==self.initialization&&(self.initialization=nil),null==arg&&(arg=nil),self.initialization["$<<"](arg.$updated("extract_kwoptarg"))}).$$s=this,$$16.$$arity=1,$$16))},$Initializer_extract_restarg$22.$$arity=0),Opal.def($Initializer_args_to_keep$23,"$extract_kwrestarg",$Initializer_extract_restarg$22=function(){var arg=nil;return $truthy(arg=this.args.$kwrestarg())?this.initialization["$<<"](arg.$updated("extract_kwrestarg")):nil},$Initializer_extract_restarg$22.$$arity=0),Opal.def($Initializer_args_to_keep$23,"$extract_post_args",$Initializer_extract_restarg$22=function(){var $$19;return $send(this.args.$postargs(),"each",[],(($$19=function(arg){var self=null==$$19.$$s?this:$$19.$$s;return null==self.initialization&&(self.initialization=nil),null==self.inline&&(self.inline=nil),null==arg&&(arg=nil),self.initialization["$<<"](arg.$updated("extract_post_arg")),self.inline["$<<"](self.$s("fake_arg"))}).$$s=this,$$19.$$arity=1,$$19))},$Initializer_extract_restarg$22.$$arity=0),Opal.def($Initializer_args_to_keep$23,"$extract_optargs",$Initializer_extract_restarg$22=function(){var $$21,has_post_args=this.args["$has_post_args?"]();return $send(this.args.$optargs(),"each",[],(($$21=function(arg){var $a,arg_name,default_value,self=null==$$21.$$s?this:$$21.$$s;return null==self.initialization&&(self.initialization=nil),null==self.inline&&(self.inline=nil),null==arg&&(arg=nil),$truthy(has_post_args)?(arg_name=null==($a=[].concat(Opal.to_a(arg)))[0]?nil:$a[0],default_value=null==$a[1]?nil:$a[1],self.initialization["$<<"](arg.$updated("extract_post_optarg",[arg_name,default_value,self.$args_to_keep()])),self.inline["$<<"](self.$s("fake_arg"))):(self.inline["$<<"](arg.$updated("arg")),self.initialization["$<<"](arg.$updated("extract_optarg")))}).$$s=this,$$21.$$arity=1,$$21))},$Initializer_extract_restarg$22.$$arity=0),Opal.def($Initializer_args_to_keep$23,"$extract_restarg",$Initializer_extract_restarg$22=function(){var arg_name,arg=nil;return $truthy(arg=this.args.$restarg())?(arg_name=arg.$children()["$[]"](0),this.initialization["$<<"](arg.$updated("extract_restarg",[arg_name,this.$args_to_keep()])),this.inline["$<<"](this.$s("fake_arg"))):nil},$Initializer_extract_restarg$22.$$arity=0),Opal.def($Initializer_args_to_keep$23,"$args_to_keep",$Initializer_args_to_keep$23=function(){return this.args.$postargs().$length()},$Initializer_args_to_keep$23.$$arity=0),nil&&"args_to_keep"}($nesting[0],$$$($$$($$$("::","Opal"),"Rewriters"),"Base"),$nesting)}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/numblocks"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send=Opal.send;return Opal.add_stubs(["$require","$children","$s","$gen_args","$map"]),self.$require("opal/rewriters/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Rewriters")].concat($nesting);return function($base,$Numblocks_gen_args$2,$Numblocks_on_numblock$1){$Numblocks_gen_args$2=$klass($base,$Numblocks_gen_args$2,"Numblocks"),[$Numblocks_gen_args$2].concat($Numblocks_on_numblock$1);return Opal.def($Numblocks_gen_args$2,"$on_numblock",$Numblocks_on_numblock$1=function($a){var $a=$a.$children(),$a=Opal.to_ary($a),left=null==$a[0]?nil:$a[0],arg_count=null==$a[1]?nil:$a[1],right=null==$a[2]?nil:$a[2];return this.$s("block",left,$send(this,"s",["args"].concat(Opal.to_a(this.$gen_args(arg_count)))),right)},$Numblocks_on_numblock$1.$$arity=1),Opal.def($Numblocks_gen_args$2,"$gen_args",$Numblocks_gen_args$2=function(arg_count){var $$3;return $send(Opal.Range.$new(1,arg_count,!1),"map",[],(($$3=function(i){var self=null==$$3.$$s?this:$$3.$$s;return null==i&&(i=nil),self.$s("arg","_"+i)}).$$s=this,$$3.$$arity=1,$$3))},$Numblocks_gen_args$2.$$arity=1),nil&&"gen_args"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/returnable_logic"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy;return Opal.add_stubs(["$require","$+","$children","$next_tmp","$updated","$s","$process"]),self.$require("opal/rewriters/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Rewriters")].concat($nesting);return function($base,$ReturnableLogic_on_and$4,$ReturnableLogic_on_or$3){$ReturnableLogic_on_and$4=$klass($base,$ReturnableLogic_on_and$4,"ReturnableLogic"),[$ReturnableLogic_on_and$4].concat($ReturnableLogic_on_or$3);return $ReturnableLogic_on_and$4.$$prototype.counter=nil,Opal.def($ReturnableLogic_on_and$4,"$next_tmp",$ReturnableLogic_on_or$3=function(){var lhs,self=this,rhs=nil;return self.counter=$truthy(rhs=self.counter)?rhs:0,self.counter=(lhs=self.counter,rhs=1,"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)),"$ret_or_"+self.counter},$ReturnableLogic_on_or$3.$$arity=0),Opal.def($ReturnableLogic_on_and$4,"$reset_tmp_counter!",$ReturnableLogic_on_or$3=function(){return this.counter=nil},$ReturnableLogic_on_or$3.$$arity=0),Opal.def($ReturnableLogic_on_and$4,"$on_or",$ReturnableLogic_on_or$3=function(node){var $a=[].concat(Opal.to_a(node.$children())),lhs=null==$a[0]?nil:$a[0],rhs=null==$a[1]?nil:$a[1],lhs_tmp=this.$next_tmp();return node.$updated("if",[this.$s("lvasgn",lhs_tmp,this.$process(lhs)),this.$s("js_tmp",lhs_tmp),this.$process(rhs)])},$ReturnableLogic_on_or$3.$$arity=1),Opal.def($ReturnableLogic_on_and$4,"$on_and",$ReturnableLogic_on_and$4=function(node){var $a=[].concat(Opal.to_a(node.$children())),lhs=null==$a[0]?nil:$a[0],rhs=null==$a[1]?nil:$a[1],lhs_tmp=this.$next_tmp();return node.$updated("if",[this.$s("lvasgn",lhs_tmp,this.$process(lhs)),this.$process(rhs),this.$s("js_tmp",lhs_tmp)])},$ReturnableLogic_on_and$4.$$arity=1),nil&&"on_and"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/forward_args"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$range=Opal.range,$send2=Opal.send2,$find_super=Opal.find_super;return Opal.add_stubs(["$require","$process","$s","$last","$children","$==","$type","$[]","$updated","$!=","$class"]),self.$require("opal/rewriters/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Rewriters")].concat($nesting);return function($base,self,$ForwardArgs_on_forward_args$1){var $ForwardArgs_on_args$2,$ForwardArgs_on_send$3,self=$klass($base,self,"ForwardArgs"),$nesting=[self].concat($ForwardArgs_on_forward_args$1);return Opal.def(self,"$on_forward_args",$ForwardArgs_on_forward_args$1=function(){return this.$process(this.$s("args",this.$s("forward_arg","$")))},$ForwardArgs_on_forward_args$1.$$arity=1),Opal.def(self,"$on_args",$ForwardArgs_on_args$2=function(node){var prev_children,$zuper_ii,$iter=$ForwardArgs_on_args$2.$$p,$ret_or_1=nil,$zuper=nil,$zuper_i=nil;for($iter&&($ForwardArgs_on_args$2.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return $truthy($truthy($ret_or_1=node.$children().$last())?node.$children().$last().$type()["$=="]("forward_arg"):$ret_or_1)?(prev_children=node.$children()["$[]"]($range(0,-2,!1)),node.$updated(nil,[].concat(Opal.to_a(prev_children)).concat([this.$s("restarg","$fwd_rest"),this.$s("blockarg","$fwd_block")]))):$send2(this,$find_super(this,"on_args",$ForwardArgs_on_args$2,!1,!0),"on_args",$zuper,$iter)},$ForwardArgs_on_args$2.$$arity=1),Opal.def(self,"$on_send",$ForwardArgs_on_send$3=function(node){var prev_children,$zuper_ii,$iter=$ForwardArgs_on_send$3.$$p,$ret_or_2=nil,$ret_or_3=nil,$zuper=nil,$zuper_i=nil;for($iter&&($ForwardArgs_on_send$3.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return $truthy($truthy($ret_or_2=$truthy($ret_or_3=node.$children().$last())?node.$children().$last().$class()["$!="]($$($nesting,"Symbol")):$ret_or_3)?node.$children().$last().$type()["$=="]("forwarded_args"):$ret_or_2)?(prev_children=node.$children()["$[]"]($range(0,-2,!1)),node.$updated(nil,[].concat(Opal.to_a(prev_children)).concat([this.$s("splat",this.$s("lvar","$fwd_rest")),this.$s("block_pass",this.$s("lvar","$fwd_block"))]))):$send2(this,$find_super(this,"on_send",$ForwardArgs_on_send$3,!1,!0),"on_send",$zuper,$iter)},$ForwardArgs_on_send$3.$$arity=1),nil&&"on_send"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriter"]=function(Opal){var $Rewriter_process$7,$disable$4,$delete$3=Opal.top,$disabled$ques$5=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$Rewriter_initialize$6=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send;return Opal.add_stubs(["$require","$<<","$list","$delete","$use","$disabled?","$class","$each","$new","$process"]),$delete$3.$require("opal/rewriters/opal_engine_check"),$delete$3.$require("opal/rewriters/for_rewriter"),$delete$3.$require("opal/rewriters/explicit_writer_return"),$delete$3.$require("opal/rewriters/js_reserved_words"),$delete$3.$require("opal/rewriters/block_to_iter"),$delete$3.$require("opal/rewriters/dot_js_syntax"),$delete$3.$require("opal/rewriters/pattern_matching"),$delete$3.$require("opal/rewriters/logical_operator_assignment"),$delete$3.$require("opal/rewriters/binary_operator_assignment"),$delete$3.$require("opal/rewriters/hashes/key_duplicates_rewriter"),$delete$3.$require("opal/rewriters/dump_args"),$delete$3.$require("opal/rewriters/mlhs_args"),$delete$3.$require("opal/rewriters/inline_args"),$delete$3.$require("opal/rewriters/numblocks"),$delete$3.$require("opal/rewriters/returnable_logic"),$delete$3.$require("opal/rewriters/forward_args"),$Rewriter_initialize$6=[$Rewriter_initialize$6($delete$3=($Rewriter_process$7=$disabled$ques$5)[0],"Opal")].concat($Rewriter_process$7),$disabled$ques$5=$Rewriter_initialize$6[0],$delete$3=$Rewriter_initialize$6,$Rewriter_process$7=$klass($disabled$ques$5,null,"Rewriter"),$Rewriter_initialize$6=[$Rewriter_process$7].concat($delete$3),$Rewriter_process$7.$$prototype.sexp=nil,[$disabled$ques$5=Opal.get_singleton_class($Rewriter_process$7)].concat($delete$3=$Rewriter_initialize$6),Opal.def($disabled$ques$5,"$list",$delete$3=function(){var self=this,$ret_or_1=nil;return null==self.list&&(self.list=nil),self.list=$truthy($ret_or_1=self.list)?$ret_or_1:[]},$delete$3.$$arity=0),Opal.def($disabled$ques$5,"$use",$delete$3=function(rewriter){return this.$list()["$<<"](rewriter)},$delete$3.$$arity=1),Opal.def($disabled$ques$5,"$delete",$delete$3=function(rewriter){return this.$list().$delete(rewriter)},$delete$3.$$arity=1),Opal.def($disabled$ques$5,"$disable",$disable$4=function(){var $iter=$disable$4.$$p,$yield=$iter||nil,self=this;return $iter&&($disable$4.$$p=null),function(){try{return self.disabled=!0,Opal.yieldX($yield,[])}finally{self.disabled=!1}}()},$disable$4.$$arity=0),Opal.def($disabled$ques$5,"$disabled?",$disabled$ques$5=function(){var $a;return null==this.disabled&&(this.disabled=nil),$truthy(null!=($a=this.disabled)&&$a!==nil?"instance-variable":nil)?this.disabled:nil},$disabled$ques$5.$$arity=0),$Rewriter_process$7.$use($$$($$($Rewriter_initialize$6,"Rewriters"),"OpalEngineCheck")),$Rewriter_process$7.$use($$$($$($Rewriter_initialize$6,"Rewriters"),"ForRewriter")),$Rewriter_process$7.$use($$$($$($Rewriter_initialize$6,"Rewriters"),"Numblocks")),$Rewriter_process$7.$use($$$($$($Rewriter_initialize$6,"Rewriters"),"ForwardArgs")),$Rewriter_process$7.$use($$$($$($Rewriter_initialize$6,"Rewriters"),"BlockToIter")),$Rewriter_process$7.$use($$$($$($Rewriter_initialize$6,"Rewriters"),"DotJsSyntax")),$Rewriter_process$7.$use($$$($$($Rewriter_initialize$6,"Rewriters"),"PatternMatching")),$Rewriter_process$7.$use($$$($$($Rewriter_initialize$6,"Rewriters"),"JsReservedWords")),$Rewriter_process$7.$use($$$($$($Rewriter_initialize$6,"Rewriters"),"LogicalOperatorAssignment")),$Rewriter_process$7.$use($$$($$($Rewriter_initialize$6,"Rewriters"),"BinaryOperatorAssignment")),$Rewriter_process$7.$use($$$($$($Rewriter_initialize$6,"Rewriters"),"ExplicitWriterReturn")),$Rewriter_process$7.$use($$$($$$($$($Rewriter_initialize$6,"Rewriters"),"Hashes"),"KeyDuplicatesRewriter")),$Rewriter_process$7.$use($$$($$($Rewriter_initialize$6,"Rewriters"),"ReturnableLogic")),$Rewriter_process$7.$use($$$($$($Rewriter_initialize$6,"Rewriters"),"DumpArgs")),$Rewriter_process$7.$use($$$($$($Rewriter_initialize$6,"Rewriters"),"MlhsArgs")),$Rewriter_process$7.$use($$$($$($Rewriter_initialize$6,"Rewriters"),"InlineArgs")),Opal.def($Rewriter_process$7,"$initialize",$Rewriter_initialize$6=function(sexp){return this.sexp=sexp},$Rewriter_initialize$6.$$arity=1),Opal.def($Rewriter_process$7,"$process",$Rewriter_process$7=function(){var $$8;return $truthy(this.$class()["$disabled?"]())||$send(this.$class().$list(),"each",[],(($$8=function(rewriter_class){var self=null==$$8.$$s?this:$$8.$$s,rewriter=nil;return null==self.sexp&&(self.sexp=nil),null==rewriter_class&&(rewriter_class=nil),rewriter=rewriter_class.$new(),self.sexp=rewriter.$process(self.sexp)}).$$s=this,$$8.$$arity=1,$$8)),this.sexp},$Rewriter_process$7.$$arity=0),nil&&"process"},Opal.modules["opal/parser/source_buffer"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$send2=Opal.send2,$find_super=Opal.find_super;return function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Parser")].concat($nesting);return function($base,self,$parent_nesting){var 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sexp.$type()["$=="]("send")?(mid=sexp.$children()["$[]"](1),receiver_handler_class=$truthy($ret_or_1=receiver=sexp.$children()["$[]"](0))?self.$compiler().$handlers()["$[]"](receiver.$type()):$ret_or_1,allow_optimization_on_type=$truthy($ret_or_2=$truthy($ret_or_3=$$$($$($nesting,"Compiler"),"COMPARE")["$include?"](mid.$to_s()))?receiver_handler_class:$ret_or_3)?receiver_handler_class["$truthy_optimize?"]():$ret_or_2,$truthy($truthy($ret_or_4=$truthy($ret_or_5=allow_optimization_on_type)?$ret_or_5:mid["$=="]("block_given?"))?$ret_or_4:mid["$=="]("=="))?self.$expr(sexp):nil):nil},$Helpers_js_truthy_optimize$10.$$arity=1),Opal.def(self,"$conditional_send",$Helpers_conditional_send$11=function(recvr){var receiver_temp,$iter=$Helpers_conditional_send$11.$$p,$yield=$iter||nil;return $iter&&($Helpers_conditional_send$11.$$p=null),receiver_temp=this.$scope().$new_temp(),this.$push(receiver_temp+" = ",recvr),this.$push(", ("+receiver_temp+" === nil || "+receiver_temp+" == null) ? nil : 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this.$push(this.$translate_escape_chars(sanitized_value)),$truthy(this.$value()["$valid_encoding?"]())?nil:(this.$helper("binary"),this.$wrap("$binary(",")"))},$StringNode_compile$7.$$arity=0),Opal.def($StringNode_to_utf16$9,"$to_utf16",$StringNode_to_utf16$9=function(code_point){var $$10,lead_surrogate,tail_surrogate,lhs,rhs,u=nil,u=$lambda((($$10=function(code_unit){null==$$10.$$s||$$10.$$s;return null==code_unit&&(code_unit=nil),$rb_plus("\\u",code_unit.$to_s(16).$upcase())}).$$s=this,$$10.$$arity=1,$$10));return $truthy((rhs=65535,"number"==typeof(lhs=code_point)&&"number"==typeof 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this.$push("Opal.regexp(["),$send(this.$value().$children(),"each_with_index",[],(($$16=function(v,index){var self=null==$$16.$$s?this:$$16.$$s;return null==v&&(v=nil),null==index&&(index=nil),$truthy(index["$zero?"]())||self.$push(", "),self.$push(self.$expr(v))}).$$s=this,$$16.$$arity=2,$$16)),this.$push("]"),$truthy(this.$flags()["$any?"]())&&this.$push(", '"+this.$flags().$join()+"'"),this.$push(")")},$RegexpNode_raw_value$20.$$arity=0),Opal.def($RegexpNode_single_line$ques$21,"$compile_static_regexp",$RegexpNode_raw_value$20=function(){var self=this,value=self.$value().$children()["$[]"](0);return""["$==="](value)?self.$push("/(?:)/"):self.$push(""+$$($nesting,"Regexp").$new(value).$inspect()+self.$flags().$join())},$RegexpNode_raw_value$20.$$arity=0),Opal.def($RegexpNode_single_line$ques$21,"$extract_flags_and_value",$RegexpNode_raw_value$20=function(){var $$19,parts,self=this,values=nil,flags_sexp=nil,$writer=nil,$a=[].concat(Opal.to_a(self.$children())),$b=$a.length-1;return $b=$b<0?0:$b,values=$slice.call($a,0,$b),flags_sexp=null==$a[$b]?nil:$a[$b],$writer=[$send(flags_sexp.$children(),"map",[],"to_s".$to_proc())],$send(self,"flags=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)],$writer=[$truthy(values["$empty?"]())?self.$s("str",""):$truthy(self["$single_line?"](values))?values["$[]"](0):$send(self,"s",["dstr"].concat(Opal.to_a(values)))],$send(self,"value=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)],$truthy(self.$flags()["$include?"]("x"))&&(parts=$send(self.$value().$children(),"map",[],(($$19=function(part){var trimmed_value,self=null==$$19.$$s?this:$$19.$$s,$ret_or_1=nil;return 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$send(this,"value=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]},$RegexpNode_raw_value$20.$$arity=0),$RegexpNode_single_line$ques$21.$private(),Opal.def($RegexpNode_single_line$ques$21,"$single_line?",$RegexpNode_single_line$ques$21=function(values){var $ret_or_2,lhs,rhs,value=nil;return!$truthy((lhs=values.$length(),rhs=1,"number"==typeof lhs&&"number"==typeof rhs?rhs<lhs:lhs["$>"](rhs)))&&(value=values["$[]"](0),$truthy($ret_or_2=value.$type()["$!="]("str"))?$ret_or_2:value.$children()["$[]"](0)["$include?"]("\n")["$!"]())},$RegexpNode_single_line$ques$21.$$arity=1)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$MatchCurrentLineNode_compile$22,$parent_nesting){[$MatchCurrentLineNode_compile$22=$klass($base,$MatchCurrentLineNode_compile$22,"MatchCurrentLineNode")].concat($parent_nesting),$MatchCurrentLineNode_compile$22.$handle("match_current_line"),$MatchCurrentLineNode_compile$22.$children("regexp"),Opal.def($MatchCurrentLineNode_compile$22,"$compile",$MatchCurrentLineNode_compile$22=function(){var gvar_sexp=this.$s("gvar","$_"),send_node=this.$s("send",gvar_sexp,"=~",this.$regexp());return this.$push(this.$expr(send_node))},$MatchCurrentLineNode_compile$22.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$DynamicStringNode_compile$23,$parent_nesting){[$DynamicStringNode_compile$23=$klass($base,$DynamicStringNode_compile$23,"DynamicStringNode")].concat($parent_nesting),$DynamicStringNode_compile$23.$handle("dstr"),Opal.def($DynamicStringNode_compile$23,"$compile",$DynamicStringNode_compile$23=function(){var $$24;return this.$push('""'),$send(this.$children(),"each",[],(($$24=function(part){var self=null==$$24.$$s?this:$$24.$$s;return null==part&&(part=nil),self.$push(" + "),part.$type()["$=="]("str")?self.$push(part.$children()["$[]"](0).$inspect()):self.$push("(",self.$expr(part),")"),$truthy(self["$recv?"]())?self.$wrap("(",")"):nil}).$$s=this,$$24.$$arity=1,$$24))},$DynamicStringNode_compile$23.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,self,$parent_nesting){[self=$klass($base,self,"DynamicSymbolNode")].concat($parent_nesting),self.$handle("dsym")}($nesting[0],$$($nesting,"DynamicStringNode"),$nesting),function($base,$RangeNode_compile_range_initialize$28,$RangeNode_compile_inline$27){var $nesting=[$RangeNode_compile_range_initialize$28=$klass($base,$RangeNode_compile_range_initialize$28,"RangeNode")].concat($RangeNode_compile_inline$27);$RangeNode_compile_range_initialize$28.$children("start","finish"),Opal.const_set($nesting[0],"SIMPLE_CHILDREN_TYPES",["int","float","str","sym"].$freeze()),Opal.def($RangeNode_compile_range_initialize$28,"$compile",$RangeNode_compile_inline$27=function(){return $truthy(this["$compile_inline?"]())?(this.$helper("range"),this.$compile_inline()):this.$compile_range_initialize()},$RangeNode_compile_inline$27.$$arity=0),Opal.def($RangeNode_compile_range_initialize$28,"$compile_inline?",$RangeNode_compile_inline$27=function(){var $ret_or_3,$ret_or_6,$ret_or_7,self=this,$ret_or_4=nil,$ret_or_5=nil;return $truthy($ret_or_3=$truthy($ret_or_4=self.$start()["$!"]())?$ret_or_4:$truthy($ret_or_5=self.$start().$type())?$$($nesting,"SIMPLE_CHILDREN_TYPES")["$include?"](self.$start().$type()):$ret_or_5)?$truthy($ret_or_6=self.$finish()["$!"]())?$ret_or_6:$truthy($ret_or_7=self.$finish().$type())?$$($nesting,"SIMPLE_CHILDREN_TYPES")["$include?"](self.$finish().$type()):$ret_or_7:$ret_or_3},$RangeNode_compile_inline$27.$$arity=0),Opal.def($RangeNode_compile_range_initialize$28,"$compile_inline",$RangeNode_compile_inline$27=function(){return this.$raise($$($nesting,"NotImplementedError"))},$RangeNode_compile_inline$27.$$arity=0),Opal.def($RangeNode_compile_range_initialize$28,"$compile_range_initialize",$RangeNode_compile_range_initialize$28=function(){return this.$raise($$($nesting,"NotImplementedError"))},$RangeNode_compile_range_initialize$28.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$InclusiveRangeNode_compile_range_initialize$30,$InclusiveRangeNode_compile_inline$29){[$InclusiveRangeNode_compile_range_initialize$30=$klass($base,$InclusiveRangeNode_compile_range_initialize$30,"InclusiveRangeNode")].concat($InclusiveRangeNode_compile_inline$29),$InclusiveRangeNode_compile_range_initialize$30.$handle("irange"),Opal.def($InclusiveRangeNode_compile_range_initialize$30,"$compile_inline",$InclusiveRangeNode_compile_inline$29=function(){return this.$push("$range(",this.$expr_or_nil(this.$start()),", ",this.$expr_or_nil(this.$finish()),", false)")},$InclusiveRangeNode_compile_inline$29.$$arity=0),Opal.def($InclusiveRangeNode_compile_range_initialize$30,"$compile_range_initialize",$InclusiveRangeNode_compile_range_initialize$30=function(){return this.$push("Opal.Range.$new(",this.$expr_or_nil(this.$start()),", ",this.$expr_or_nil(this.$finish()),", false)")},$InclusiveRangeNode_compile_range_initialize$30.$$arity=0)}($nesting[0],$$($nesting,"RangeNode"),$nesting),function($base,$ExclusiveRangeNode_compile_range_initialize$32,$ExclusiveRangeNode_compile_inline$31){[$ExclusiveRangeNode_compile_range_initialize$32=$klass($base,$ExclusiveRangeNode_compile_range_initialize$32,"ExclusiveRangeNode")].concat($ExclusiveRangeNode_compile_inline$31),$ExclusiveRangeNode_compile_range_initialize$32.$handle("erange"),Opal.def($ExclusiveRangeNode_compile_range_initialize$32,"$compile_inline",$ExclusiveRangeNode_compile_inline$31=function(){return this.$push("$range(",this.$expr_or_nil(this.$start()),", ",this.$expr_or_nil(this.$finish()),", true)")},$ExclusiveRangeNode_compile_inline$31.$$arity=0),Opal.def($ExclusiveRangeNode_compile_range_initialize$32,"$compile_range_initialize",$ExclusiveRangeNode_compile_range_initialize$32=function(){return this.$push("Opal.Range.$new(",this.$expr_or_nil(this.$start()),",",this.$expr_or_nil(this.$finish()),", true)")},$ExclusiveRangeNode_compile_range_initialize$32.$$arity=0)}($nesting[0],$$($nesting,"RangeNode"),$nesting),function($base,$RationalNode_compile$33,$parent_nesting){[$RationalNode_compile$33=$klass($base,$RationalNode_compile$33,"RationalNode")].concat($parent_nesting),$RationalNode_compile$33.$handle("rational"),$RationalNode_compile$33.$children("value"),Opal.def($RationalNode_compile$33,"$compile",$RationalNode_compile$33=function(){return this.$push("Opal.Rational.$new("+this.$value().$numerator()+", "+this.$value().$denominator()+")")},$RationalNode_compile$33.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$ComplexNode_compile$34,$parent_nesting){$ComplexNode_compile$34=$klass($base,$ComplexNode_compile$34,"ComplexNode"),[$ComplexNode_compile$34].concat($parent_nesting);return $ComplexNode_compile$34.$handle("complex"),$ComplexNode_compile$34.$children("value"),Opal.def($ComplexNode_compile$34,"$compile",$ComplexNode_compile$34=function(){return this.$push("Opal.Complex.$new("+this.$value().$real()+", "+this.$value().$imag()+")")},$ComplexNode_compile$34.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/variables"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send,$range=Opal.range,$send2=Opal.send2,$find_super=Opal.find_super;return Opal.add_stubs(["$require","$handle","$children","$irb?","$compiler","$top?","$scope","$using_irb?","$push","$to_s","$var_name","$with_temp","$property","$wrap","$add_local","$expr","$value","$recv?","$expr?","$[]","$name","$add_ivar","$helper","$add_gvar","$===","$handle_global_match","$handle_post_match","$handle_pre_match","$raise","$index","$stmt?","$class_variable_owner","$inspect"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$LocalVariableNode_compile$2,$LocalVariableNode_using_irb$ques$1){[$LocalVariableNode_compile$2=$klass($base,$LocalVariableNode_compile$2,"LocalVariableNode")].concat($LocalVariableNode_using_irb$ques$1),$LocalVariableNode_compile$2.$handle("lvar"),$LocalVariableNode_compile$2.$children("var_name"),Opal.def($LocalVariableNode_compile$2,"$using_irb?",$LocalVariableNode_using_irb$ques$1=function(){var $ret_or_1;return $truthy($ret_or_1=this.$compiler()["$irb?"]())?this.$scope()["$top?"]():$ret_or_1},$LocalVariableNode_using_irb$ques$1.$$arity=0),Opal.def($LocalVariableNode_compile$2,"$compile",$LocalVariableNode_compile$2=function(){var $$3;return $truthy(this["$using_irb?"]())?$send(this,"with_temp",[],(($$3=function(tmp){var self=null==$$3.$$s?this:$$3.$$s;return null==tmp&&(tmp=nil),self.$push(self.$property(self.$var_name().$to_s())),self.$wrap("(("+tmp+" = Opal.irb_vars",") == null ? nil : "+tmp+")")}).$$s=this,$$3.$$arity=1,$$3)):this.$push(this.$var_name().$to_s())},$LocalVariableNode_compile$2.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$LocalAssignNode_compile$5,$LocalAssignNode_using_irb$ques$4){[$LocalAssignNode_compile$5=$klass($base,$LocalAssignNode_compile$5,"LocalAssignNode")].concat($LocalAssignNode_using_irb$ques$4),$LocalAssignNode_compile$5.$handle("lvasgn"),$LocalAssignNode_compile$5.$children("var_name","value"),Opal.def($LocalAssignNode_compile$5,"$using_irb?",$LocalAssignNode_using_irb$ques$4=function(){var $ret_or_2;return $truthy($ret_or_2=this.$compiler()["$irb?"]())?this.$scope()["$top?"]():$ret_or_2},$LocalAssignNode_using_irb$ques$4.$$arity=0),Opal.def($LocalAssignNode_compile$5,"$compile",$LocalAssignNode_compile$5=function(){var self=this,$ret_or_3=nil,$ret_or_4=nil;return $truthy(self["$using_irb?"]())?self.$push("Opal.irb_vars"+self.$property(self.$var_name().$to_s())+" = "):(self.$add_local(self.$var_name().$to_s()),self.$push(self.$var_name()+" = ")),self.$push(self.$expr(self.$value())),$truthy($truthy($ret_or_3=$truthy($ret_or_4=self["$recv?"]())?$ret_or_4:self["$expr?"]())?self.$value():$ret_or_3)?self.$wrap("(",")"):nil},$LocalAssignNode_compile$5.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$LocalDeclareNode_compile$6,$parent_nesting){[$LocalDeclareNode_compile$6=$klass($base,$LocalDeclareNode_compile$6,"LocalDeclareNode")].concat($parent_nesting),$LocalDeclareNode_compile$6.$handle("lvdeclare"),$LocalDeclareNode_compile$6.$children("var_name"),Opal.def($LocalDeclareNode_compile$6,"$compile",$LocalDeclareNode_compile$6=function(){return this.$add_local(this.$var_name().$to_s()),nil},$LocalDeclareNode_compile$6.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$InstanceVariableNode_compile$8,$InstanceVariableNode_var_name$7){[$InstanceVariableNode_compile$8=$klass($base,$InstanceVariableNode_compile$8,"InstanceVariableNode")].concat($InstanceVariableNode_var_name$7),$InstanceVariableNode_compile$8.$handle("ivar"),$InstanceVariableNode_compile$8.$children("name"),Opal.def($InstanceVariableNode_compile$8,"$var_name",$InstanceVariableNode_var_name$7=function(){return this.$name().$to_s()["$[]"]($range(1,-1,!1))},$InstanceVariableNode_var_name$7.$$arity=0),Opal.def($InstanceVariableNode_compile$8,"$compile",$InstanceVariableNode_compile$8=function(){var name=this.$property(this.$var_name());return this.$add_ivar(name),this.$push("self"+name)},$InstanceVariableNode_compile$8.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$InstanceAssignNode_compile$10,$InstanceAssignNode_var_name$9){[$InstanceAssignNode_compile$10=$klass($base,$InstanceAssignNode_compile$10,"InstanceAssignNode")].concat($InstanceAssignNode_var_name$9),$InstanceAssignNode_compile$10.$handle("ivasgn"),$InstanceAssignNode_compile$10.$children("name","value"),Opal.def($InstanceAssignNode_compile$10,"$var_name",$InstanceAssignNode_var_name$9=function(){return this.$name().$to_s()["$[]"]($range(1,-1,!1))},$InstanceAssignNode_var_name$9.$$arity=0),Opal.def($InstanceAssignNode_compile$10,"$compile",$InstanceAssignNode_compile$10=function(){var self=this,$ret_or_5=nil,$ret_or_6=nil,name=self.$property(self.$var_name());return self.$push("self"+name+" = "),self.$push(self.$expr(self.$value())),$truthy($truthy($ret_or_5=$truthy($ret_or_6=self["$recv?"]())?$ret_or_6:self["$expr?"]())?self.$value():$ret_or_5)?self.$wrap("(",")"):nil},$InstanceAssignNode_compile$10.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$GlobalVariableNode_compile$12,$GlobalVariableNode_var_name$11){[$GlobalVariableNode_compile$12=$klass($base,$GlobalVariableNode_compile$12,"GlobalVariableNode")].concat($GlobalVariableNode_var_name$11),$GlobalVariableNode_compile$12.$handle("gvar"),$GlobalVariableNode_compile$12.$children("name"),Opal.def($GlobalVariableNode_compile$12,"$var_name",$GlobalVariableNode_var_name$11=function(){return this.$name().$to_s()["$[]"]($range(1,-1,!1))},$GlobalVariableNode_var_name$11.$$arity=0),Opal.def($GlobalVariableNode_compile$12,"$compile",$GlobalVariableNode_compile$12=function(){var name;return this.$helper("gvars"),name=this.$property(this.$var_name()),this.$add_gvar(name),this.$push("$gvars"+name)},$GlobalVariableNode_compile$12.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$BackRefNode_handle_post_match$18,$BackRefNode_handle_pre_match$16){var $BackRefNode_compile$13,$nesting=[$BackRefNode_handle_post_match$18=$klass($base,$BackRefNode_handle_post_match$18,"BackRefNode")].concat($BackRefNode_handle_pre_match$16);$BackRefNode_handle_post_match$18.$handle("back_ref"),Opal.def($BackRefNode_handle_post_match$18,"$compile",$BackRefNode_compile$13=function(){var $zuper_ii,$iter=$BackRefNode_compile$13.$$p,self=this,$case=nil,$zuper=nil,$zuper_i=nil;for($iter&&($BackRefNode_compile$13.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return self.$helper("gvars"),$case=self.$var_name(),"&"["$==="]($case)?self.$handle_global_match():"'"["$==="]($case)?self.$handle_post_match():"`"["$==="]($case)?self.$handle_pre_match():"+"["$==="]($case)?$send2(self,$find_super(self,"compile",$BackRefNode_compile$13,!1,!0),"compile",$zuper,$iter):self.$raise($$($nesting,"NotImplementedError"))},$BackRefNode_compile$13.$$arity=0),Opal.def($BackRefNode_handle_post_match$18,"$handle_global_match",$BackRefNode_handle_pre_match$16=function(){var $$15;return $send(this,"with_temp",[],(($$15=function(tmp){var self=null==$$15.$$s?this:$$15.$$s;return null==tmp&&(tmp=nil),self.$push("(("+tmp+" = $gvars['~']) === nil ? nil : "+tmp+"['$[]'](0))")}).$$s=this,$$15.$$arity=1,$$15))},$BackRefNode_handle_pre_match$16.$$arity=0),Opal.def($BackRefNode_handle_post_match$18,"$handle_pre_match",$BackRefNode_handle_pre_match$16=function(){var $$17;return $send(this,"with_temp",[],(($$17=function(tmp){var self=null==$$17.$$s?this:$$17.$$s;return null==tmp&&(tmp=nil),self.$push("(("+tmp+" = $gvars['~']) === nil ? nil : "+tmp+".$pre_match())")}).$$s=this,$$17.$$arity=1,$$17))},$BackRefNode_handle_pre_match$16.$$arity=0),Opal.def($BackRefNode_handle_post_match$18,"$handle_post_match",$BackRefNode_handle_post_match$18=function(){var $$19;return $send(this,"with_temp",[],(($$19=function(tmp){var self=null==$$19.$$s?this:$$19.$$s;return null==tmp&&(tmp=nil),self.$push("(("+tmp+" = $gvars['~']) === nil ? nil : "+tmp+".$post_match())")}).$$s=this,$$19.$$arity=1,$$19))},$BackRefNode_handle_post_match$18.$$arity=0)}($nesting[0],$$($nesting,"GlobalVariableNode"),$nesting),function($base,$GlobalAssignNode_compile$21,$GlobalAssignNode_var_name$20){[$GlobalAssignNode_compile$21=$klass($base,$GlobalAssignNode_compile$21,"GlobalAssignNode")].concat($GlobalAssignNode_var_name$20),$GlobalAssignNode_compile$21.$handle("gvasgn"),$GlobalAssignNode_compile$21.$children("name","value"),Opal.def($GlobalAssignNode_compile$21,"$var_name",$GlobalAssignNode_var_name$20=function(){return this.$name().$to_s()["$[]"]($range(1,-1,!1))},$GlobalAssignNode_var_name$20.$$arity=0),Opal.def($GlobalAssignNode_compile$21,"$compile",$GlobalAssignNode_compile$21=function(){var name,self=this,$ret_or_7=nil,$ret_or_8=nil;return self.$helper("gvars"),name=self.$property(self.$var_name()),self.$push("$gvars"+name+" = "),self.$push(self.$expr(self.$value())),$truthy($truthy($ret_or_7=$truthy($ret_or_8=self["$recv?"]())?$ret_or_8:self["$expr?"]())?self.$value():$ret_or_7)?self.$wrap("(",")"):nil},$GlobalAssignNode_compile$21.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$NthrefNode_compile$22,$parent_nesting){[$NthrefNode_compile$22=$klass($base,$NthrefNode_compile$22,"NthrefNode")].concat($parent_nesting),$NthrefNode_compile$22.$handle("nth_ref"),$NthrefNode_compile$22.$children("index"),Opal.def($NthrefNode_compile$22,"$compile",$NthrefNode_compile$22=function(){var $$23;return this.$helper("gvars"),$send(this,"with_temp",[],(($$23=function(tmp){var self=null==$$23.$$s?this:$$23.$$s;return null==tmp&&(tmp=nil),self.$push("(("+tmp+" = $gvars['~']) === nil ? nil : "+tmp+"['$[]']("+self.$index()+"))")}).$$s=this,$$23.$$arity=1,$$23))},$NthrefNode_compile$22.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$ClassVariableNode_compile$24,$parent_nesting){[$ClassVariableNode_compile$24=$klass($base,$ClassVariableNode_compile$24,"ClassVariableNode")].concat($parent_nesting),$ClassVariableNode_compile$24.$handle("cvar"),$ClassVariableNode_compile$24.$children("name"),Opal.def($ClassVariableNode_compile$24,"$compile",$ClassVariableNode_compile$24=function(){var tolerant=nil;return this.$helper("class_variable_get"),tolerant=!1,$truthy(this["$stmt?"]())&&(tolerant=!0),this.$push("$class_variable_get("+this.$class_variable_owner()+", '"+this.$name()+"', "+tolerant.$inspect()+")")},$ClassVariableNode_compile$24.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$ClassVarAssignNode_compile$25,$parent_nesting){$ClassVarAssignNode_compile$25=$klass($base,$ClassVarAssignNode_compile$25,"ClassVarAssignNode"),[$ClassVarAssignNode_compile$25].concat($parent_nesting);return $ClassVarAssignNode_compile$25.$handle("cvasgn"),$ClassVarAssignNode_compile$25.$children("name","value"),Opal.def($ClassVarAssignNode_compile$25,"$compile",$ClassVarAssignNode_compile$25=function(){return this.$helper("class_variable_set"),this.$push("$class_variable_set("+this.$class_variable_owner()+", '"+this.$name()+"', ",this.$expr(this.$value()),")")},$ClassVarAssignNode_compile$25.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/constants"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy;return Opal.add_stubs(["$require","$handle","$children","$magical_data_const?","$push","$const_scope","$recv","$name","$eval?","$compiler","$nil?","$==","$eof_content","$base","$expr","$value"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$ConstNode_magical_data_const$ques$2,$ConstNode_compile$1){[$ConstNode_magical_data_const$ques$2=$klass($base,$ConstNode_magical_data_const$ques$2,"ConstNode")].concat($ConstNode_compile$1),$ConstNode_magical_data_const$ques$2.$handle("const"),$ConstNode_magical_data_const$ques$2.$children("const_scope","name"),Opal.def($ConstNode_magical_data_const$ques$2,"$compile",$ConstNode_compile$1=function(){return $truthy(this["$magical_data_const?"]())?this.$push("$__END__"):$truthy(this.$const_scope())?this.$push("$$$(",this.$recv(this.$const_scope()),", '"+this.$name()+"')"):($truthy(this.$compiler()["$eval?"]()),this.$push("$$($nesting, '"+this.$name()+"')"))},$ConstNode_compile$1.$$arity=0),Opal.def($ConstNode_magical_data_const$ques$2,"$magical_data_const?",$ConstNode_magical_data_const$ques$2=function(){var $ret_or_1,self=this,$ret_or_2=nil;return $truthy($ret_or_1=$truthy($ret_or_2=self.$const_scope()["$nil?"]())?self.$name()["$=="]("DATA"):$ret_or_2)?self.$compiler().$eof_content():$ret_or_1},$ConstNode_magical_data_const$ques$2.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$CbaseNode_compile$3,$parent_nesting){[$CbaseNode_compile$3=$klass($base,$CbaseNode_compile$3,"CbaseNode")].concat($parent_nesting),$CbaseNode_compile$3.$handle("cbase"),Opal.def($CbaseNode_compile$3,"$compile",$CbaseNode_compile$3=function(){return 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function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$CallNode_push_nesting$ques$51,$CallNode_using_refinement$42){var $CallNode_add_special$1,$CallNode_initialize$2,$CallNode_handle_special$31,$CallNode$32,$CallNode$34,$CallNode$35,$CallNode$36,$CallNode$37,$CallNode$38,$CallNode$39,$CallNode$40,$CallNode$41,$CallNode$43,$CallNode$44,$CallNode$45,$CallNode$47,$CallNode$48,$CallNode$49,$CallNode$50,$CallNode_push_nesting$ques$51=$klass($base,$CallNode_push_nesting$ques$51,"CallNode"),$nesting=[$CallNode_push_nesting$ques$51].concat($CallNode_using_refinement$42);return $CallNode_push_nesting$ques$51.$$prototype.sexp=$CallNode_push_nesting$ques$51.$$prototype.compiler=nil,$CallNode_push_nesting$ques$51.$handle("send"),$CallNode_push_nesting$ques$51.$attr_reader("recvr","meth","arglist","iter"),Opal.const_set($nesting[0],"SPECIALS",$hash2([],{})),Opal.const_set($nesting[0],"OPERATORS",$hash2(["+","-","*","/","<","<=",">",">="],{"+":"plus","-":"minus","*":"times","/":"divide","<":"lt","<=":"le",">":"gt",">=":"ge"}).$freeze()),Opal.defs($CallNode_push_nesting$ques$51,"$add_special",$CallNode_add_special$1=function(name,rhs){var $iter=$CallNode_add_special$1.$$p,handler=$iter||nil,lhs=nil;return $iter&&($CallNode_add_special$1.$$p=null),$iter&&($CallNode_add_special$1.$$p=null),null==rhs&&(rhs=$hash2([],{})),lhs=[name,rhs],$send($$($nesting,"SPECIALS"),"[]=",Opal.to_a(lhs)),rhs=1,"number"==typeof(lhs=lhs.length)&&"number"==typeof rhs||lhs["$-"](rhs),$send(this,"define_method",["handle_"+name],handler.$to_proc())},$CallNode_add_special$1.$$arity=-2),Opal.def($CallNode_push_nesting$ques$51,"$initialize",$CallNode_initialize$2=function($a){var $b,rest,$zuper_ii,$c=$CallNode_initialize$2.$$p,args=nil,last_arg=nil,$ret_or_1=nil,$zuper=nil,$zuper_i=nil;for($c&&($CallNode_initialize$2.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return Opal.slice.call(arguments,0,arguments.length),$send2(this,$find_super(this,"initialize",$CallNode_initialize$2,!1,!0),"initialize",$zuper,$c),$b=[].concat(Opal.to_a(this.sexp)),this.recvr=null==$b[0]?nil:$b[0],this.meth=null==$b[1]?nil:$b[1],args=$slice.call($b,2),$c=($c=($b=[].concat(Opal.to_a(args))).length-1)<0?0:$c,rest=$slice.call($b,0,$c),last_arg=null==$b[$c]?nil:$b[$c],$truthy($truthy($ret_or_1=last_arg)?["iter","block_pass"]["$include?"](last_arg.$type()):$ret_or_1)?(this.iter=last_arg,args=rest):this.iter=nil,this.arglist=$send(this,"s",["arglist"].concat(Opal.to_a(args)))},$CallNode_initialize$2.$$arity=-1),Opal.def($CallNode_push_nesting$ques$51,"$compile",$CallNode_using_refinement$42=function(){try{var $$4;return $send(this,"handle_special",[],(($$4=function(){var self=null==$$4.$$s?this:$$4.$$s;return $truthy(self["$record_method?"]())&&self.$compiler().$method_calls()["$<<"](self.$meth().$to_sym()),$truthy(self["$using_eval?"]())&&Opal.ret(self.$compile_eval_var()),$truthy(self["$using_irb?"]())&&Opal.ret(self.$compile_irb_var()),self.$default_compile()}).$$s=this,$$4.$$arity=0,$$4))}catch($returner){if($returner===Opal.returner)return $returner.$v;throw $returner}},$CallNode_using_refinement$42.$$arity=0),$CallNode_push_nesting$ques$51.$private(),Opal.def($CallNode_push_nesting$ques$51,"$iter_has_break?",$CallNode_using_refinement$42=function(){var finder=nil;return!!$truthy(this.$iter())&&((finder=$$$($$$($$($nesting,"Opal"),"Rewriters"),"BreakFinder").$new()).$process(this.$iter()),finder["$found_break?"]())},$CallNode_using_refinement$42.$$arity=0),Opal.def($CallNode_push_nesting$ques$51,"$invoke_using_send?",$CallNode_using_refinement$42=function(){var $ret_or_2;return $truthy($ret_or_2=this.$iter())?$ret_or_2:this["$splat?"]()},$CallNode_using_refinement$42.$$arity=0),Opal.def($CallNode_push_nesting$ques$51,"$invoke_using_refinement?",$CallNode_using_refinement$42=function(){return this.$scope().$scope().$collect_refinements_temps()["$empty?"]()["$!"]()},$CallNode_using_refinement$42.$$arity=0),Opal.def($CallNode_push_nesting$ques$51,"$default_compile",$CallNode_using_refinement$42=function(){return $truthy(this["$invoke_using_refinement?"]())?this.$compile_using_refined_send():$truthy(this["$invoke_using_send?"]())?this.$compile_using_send():this.$compile_simple_call_chain(),this.$compile_break_catcher()},$CallNode_using_refinement$42.$$arity=0),Opal.def($CallNode_push_nesting$ques$51,"$compile_using_send",$CallNode_using_refinement$42=function(){return this.$helper("send"),this.$push("$send("),this.$compile_receiver(),this.$compile_method_name(),this.$compile_arguments(),this.$compile_block_pass(),this.$push(")")},$CallNode_using_refinement$42.$$arity=0),Opal.def($CallNode_push_nesting$ques$51,"$compile_using_refined_send",$CallNode_using_refinement$42=function(){return this.$helper("refined_send"),this.$push("$refined_send("),this.$compile_refinements(),this.$compile_receiver(),this.$compile_method_name(),this.$compile_arguments(),this.$compile_block_pass(),this.$push(")")},$CallNode_using_refinement$42.$$arity=0),Opal.def($CallNode_push_nesting$ques$51,"$compile_receiver",$CallNode_using_refinement$42=function(){return this.$push(this.$recv(this.$receiver_sexp()))},$CallNode_using_refinement$42.$$arity=0),Opal.def($CallNode_push_nesting$ques$51,"$compile_method_name",$CallNode_using_refinement$42=function(){return this.$push(", '"+this.$meth()+"'")},$CallNode_using_refinement$42.$$arity=0),Opal.def($CallNode_push_nesting$ques$51,"$compile_arguments",$CallNode_using_refinement$42=function(){return this.$push(", "),$truthy(this["$splat?"]())?this.$push(this.$expr(this.$arglist())):$truthy(this.$arglist().$children()["$empty?"]())?this.$push("[]"):this.$push("[",this.$expr(this.$arglist()),"]")},$CallNode_using_refinement$42.$$arity=0),Opal.def($CallNode_push_nesting$ques$51,"$compile_block_pass",$CallNode_using_refinement$42=function(){return $truthy(this.$iter())?this.$push(", ",this.$expr(this.$iter())):nil},$CallNode_using_refinement$42.$$arity=0),Opal.def($CallNode_push_nesting$ques$51,"$compile_refinements",$CallNode_using_refinement$42=function(){var $$16,refinements=$send(this.$scope().$collect_refinements_temps(),"map",[],(($$16=function(i){var self=null==$$16.$$s?this:$$16.$$s;return null==i&&(i=nil),self.$s("js_tmp",i)}).$$s=this,$$16.$$arity=1,$$16));return this.$push(this.$expr($send(this,"s",["array"].concat(Opal.to_a(refinements)))),", ")},$CallNode_using_refinement$42.$$arity=0),Opal.def($CallNode_push_nesting$ques$51,"$compile_break_catcher",$CallNode_using_refinement$42=function(){return $truthy(this["$iter_has_break?"]())?(this.$unshift("return "),this.$unshift("(function(){var $brk = Opal.new_brk(); try {"),this.$line("} catch (err) { if (err === $brk) { return err.$v } else { throw err } }})()")):nil},$CallNode_using_refinement$42.$$arity=0),Opal.def($CallNode_push_nesting$ques$51,"$compile_simple_call_chain",$CallNode_using_refinement$42=function(){return this.$push(this.$recv(this.$receiver_sexp()),this.$method_jsid(),"(",this.$expr(this.$arglist()),")")},$CallNode_using_refinement$42.$$arity=0),Opal.def($CallNode_push_nesting$ques$51,"$splat?",$CallNode_using_refinement$42=function(){var $$20;return $send(this.$arglist().$children(),"any?",[],(($$20=function(a){null==$$20.$$s||$$20.$$s;return null==a&&(a=nil),a.$type()["$=="]("splat")}).$$s=this,$$20.$$arity=1,$$20))},$CallNode_using_refinement$42.$$arity=0),Opal.def($CallNode_push_nesting$ques$51,"$receiver_sexp",$CallNode_using_refinement$42=function(){var $ret_or_3;return $truthy($ret_or_3=this.$recvr())?$ret_or_3:this.$s("self")},$CallNode_using_refinement$42.$$arity=0),Opal.def($CallNode_push_nesting$ques$51,"$method_jsid",$CallNode_using_refinement$42=function(){return this.$mid_to_jsid(this.$meth().$to_s())},$CallNode_using_refinement$42.$$arity=0),Opal.def($CallNode_push_nesting$ques$51,"$record_method?",$CallNode_using_refinement$42=function(){return!0},$CallNode_using_refinement$42.$$arity=0),Opal.def($CallNode_push_nesting$ques$51,"$compile_irb_var",$CallNode_using_refinement$42=function(){var $$25;return $send(this,"with_temp",[],(($$25=function(tmp){var lvar,call,self=null==$$25.$$s?this:$$25.$$s;return null==tmp&&(tmp=nil),lvar=self.$meth(),call=self.$s("send",self.$s("self"),self.$meth().$intern(),self.$s("arglist")),self.$push("(("+tmp+" = Opal.irb_vars."+lvar+") == null ? ",self.$expr(call)," : "+tmp+")")}).$$s=this,$$25.$$arity=1,$$25))},$CallNode_using_refinement$42.$$arity=0),Opal.def($CallNode_push_nesting$ques$51,"$compile_eval_var",$CallNode_using_refinement$42=function(){return this.$push(this.$meth().$to_s())},$CallNode_using_refinement$42.$$arity=0),Opal.def($CallNode_push_nesting$ques$51,"$using_irb?",$CallNode_using_refinement$42=function(){var $ret_or_4,self=this,$ret_or_5=nil;return $truthy($ret_or_4=$truthy($ret_or_5=self.compiler["$irb?"]())?self.$scope()["$top?"]():$ret_or_5)?self["$variable_like?"]():$ret_or_4},$CallNode_using_refinement$42.$$arity=0),Opal.def($CallNode_push_nesting$ques$51,"$using_eval?",$CallNode_using_refinement$42=function(){var $ret_or_6,self=this,$ret_or_7=nil;return $truthy($ret_or_6=$truthy($ret_or_7=self.compiler["$eval?"]())?self.$scope()["$top?"]():$ret_or_7)?self.compiler.$scope_variables()["$include?"](self.$meth()):$ret_or_6},$CallNode_using_refinement$42.$$arity=0),Opal.def($CallNode_push_nesting$ques$51,"$variable_like?",$CallNode_using_refinement$42=function(){var $ret_or_8,self=this,$ret_or_9=nil;return $truthy($ret_or_8=$truthy($ret_or_9=self.$arglist()["$=="](self.$s("arglist")))?self.$recvr()["$nil?"]():$ret_or_9)?self.$iter()["$nil?"]():$ret_or_8},$CallNode_using_refinement$42.$$arity=0),Opal.def($CallNode_push_nesting$ques$51,"$sexp_with_arglist",$CallNode_using_refinement$42=function(){return this.sexp.$updated(nil,[this.$recvr(),this.$meth(),this.$arglist()])},$CallNode_using_refinement$42.$$arity=0),Opal.def($CallNode_push_nesting$ques$51,"$handle_special",$CallNode_handle_special$31=function(){var $iter=$CallNode_handle_special$31.$$p,compile_default=$iter||nil,method=nil;return $iter&&($CallNode_handle_special$31.$$p=null),$iter&&($CallNode_handle_special$31.$$p=null),$truthy($$($nesting,"SPECIALS")["$include?"](this.$meth()))?(method=this.$method("handle_"+this.$meth())).$arity()["$=="](1)?method["$[]"](compile_default):method["$[]"]():Opal.yieldX(compile_default,[])},$CallNode_handle_special$31.$$arity=0),$send($$($nesting,"OPERATORS"),"each",[],(($CallNode$32=function(operator,name){var $$33,self=null==$CallNode$32.$$s?this:$CallNode$32.$$s;return null==operator&&(operator=nil),null==name&&(name=nil),$send(self,"add_special",[operator.$to_sym()],(($$33=function(compile_default){var $a,lhs,rhs,self=null==$$33.$$s?this:$$33.$$s;return null==compile_default&&(compile_default=nil),$truthy(self.$compiler()["$inline_operators?"]())?($truthy(self["$record_method?"]())&&self.$compiler().$method_calls()["$<<"](operator.$to_sym()),self.$compiler().$operator_helpers()["$<<"](operator.$to_sym()),lhs=($a=[self.$expr(self.$recvr()),self.$expr(self.$arglist())])[0],rhs=$a[1],self.$push(self.$fragment("$rb_"+name+"(")),self.$push(lhs),self.$push(self.$fragment(", ")),self.$push(rhs),self.$push(self.$fragment(")"))):compile_default.$call()}).$$s=self,$$33.$$arity=1,$$33))}).$$s=$CallNode_push_nesting$ques$51,$CallNode$32.$$arity=2,$CallNode$32)),$send($CallNode_push_nesting$ques$51,"add_special",["require"],(($CallNode$34=function(compile_default){var self=null==$CallNode$34.$$s?this:$CallNode$34.$$s,str=nil;return null==compile_default&&(compile_default=nil),str=$$($nesting,"DependencyResolver").$new(self.$compiler(),self.$arglist().$children()["$[]"](0)).$resolve(),$truthy(str["$nil?"]())||self.$compiler().$requires()["$<<"](str),compile_default.$call()}).$$s=$CallNode_push_nesting$ques$51,$CallNode$34.$$arity=1,$CallNode$34)),$send($CallNode_push_nesting$ques$51,"add_special",["require_relative"],(($CallNode$35=function(){var dir,self=null==$CallNode$35.$$s?this:$CallNode$35.$$s,arg=nil,file=nil,arg=self.$arglist().$children()["$[]"](0),file=self.$compiler().$file();return arg.$type()["$=="]("str")&&(dir=$$($nesting,"File").$dirname(file),self.$compiler().$requires()["$<<"](self.$Pathname(dir).$join(arg.$children()["$[]"](0)).$cleanpath().$to_s())),self.$push(self.$fragment("self.$require("+file.$inspect()+"+ '/../' + ")),self.$push(self.$process(self.$arglist())),self.$push(self.$fragment(")"))}).$$s=$CallNode_push_nesting$ques$51,$CallNode$35.$$arity=0,$CallNode$35)),$send($CallNode_push_nesting$ques$51,"add_special",["autoload"],(($CallNode$36=function(compile_default){var self=null==$CallNode$36.$$s?this:$CallNode$36.$$s,str=nil;return null==compile_default&&(compile_default=nil),$truthy(self.$scope()["$class_scope?"]())?(str=$$($nesting,"DependencyResolver").$new(self.$compiler(),self.$arglist().$children()["$[]"](1)).$resolve(),$truthy(str["$nil?"]())||self.$compiler().$requires()["$<<"](str),compile_default.$call()):nil}).$$s=$CallNode_push_nesting$ques$51,$CallNode$36.$$arity=1,$CallNode$36)),$send($CallNode_push_nesting$ques$51,"add_special",["require_tree"],(($CallNode$37=function(compile_default){var $a,dir,self=null==$CallNode$37.$$s?this:$CallNode$37.$$s,lhs=nil,rhs=nil,relative_path=nil,full_path=nil;return null==compile_default&&(compile_default=nil),lhs=null==($a=[].concat(Opal.to_a(self.$arglist().$children())))[0]?nil:$a[0],rhs=$slice.call($a,1),lhs.$type()["$=="]("str")&&(relative_path=lhs.$children()["$[]"](0),self.$compiler().$required_trees()["$<<"](relative_path),dir=$$($nesting,"File").$dirname(self.$compiler().$file()),(full_path=self.$Pathname(dir).$join(relative_path).$cleanpath().$to_s()).$force_encoding(relative_path.$encoding()),lhs=lhs.$updated(nil,[full_path])),self.arglist=self.$arglist().$updated(nil,(rhs=rhs,"number"==typeof(lhs=[lhs])&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs))),compile_default.$call()}).$$s=$CallNode_push_nesting$ques$51,$CallNode$37.$$arity=1,$CallNode$37)),$send($CallNode_push_nesting$ques$51,"add_special",["block_given?"],(($CallNode$38=function(){var self=null==$CallNode$38.$$s?this:$CallNode$38.$$s;return null==self.sexp&&(self.sexp=nil),self.$push(self.$compiler().$handle_block_given_call(self.sexp))}).$$s=$CallNode_push_nesting$ques$51,$CallNode$38.$$arity=0,$CallNode$38)),$send($CallNode_push_nesting$ques$51,"add_special",["__callee__"],(($CallNode$39=function(){var self=null==$CallNode$39.$$s?this:$CallNode$39.$$s;return $truthy(self.$scope()["$def?"]())?self.$push(self.$fragment(self.$scope().$mid().$to_s().$inspect())):self.$push(self.$fragment("nil"))}).$$s=$CallNode_push_nesting$ques$51,$CallNode$39.$$arity=0,$CallNode$39)),$send($CallNode_push_nesting$ques$51,"add_special",["__method__"],(($CallNode$40=function(){var self=null==$CallNode$40.$$s?this:$CallNode$40.$$s;return $truthy(self.$scope()["$def?"]())?self.$push(self.$fragment(self.$scope().$mid().$to_s().$inspect())):self.$push(self.$fragment("nil"))}).$$s=$CallNode_push_nesting$ques$51,$CallNode$40.$$arity=0,$CallNode$40)),$send($CallNode_push_nesting$ques$51,"add_special",["using"],(($CallNode$41=function(compile_default){var self=null==$CallNode$41.$$s?this:$CallNode$41.$$s,$ret_or_10=nil;return null==compile_default&&(compile_default=nil),$truthy($truthy($ret_or_10=self.$scope()["$accepts_using?"]())?self.$arglist().$children().$count()["$=="](1):$ret_or_10)?self.$using_refinement(self.$arglist().$children().$first()):compile_default.$call()}).$$s=$CallNode_push_nesting$ques$51,$CallNode$41.$$arity=1,$CallNode$41)),Opal.def($CallNode_push_nesting$ques$51,"$using_refinement",$CallNode_using_refinement$42=function(arg){var $a=[].concat(Opal.to_a(this.$scope().$refinements_temp())),prev=null==$a[0]?nil:$a[0],curr=null==$a[1]?nil:$a[1];return $truthy(prev)?this.$push("("+curr+" = "+prev+".slice(), "+curr+".push(",this.$expr(arg),"), self)"):this.$push("("+curr+" = [",this.$expr(arg),"], self)")},$CallNode_using_refinement$42.$$arity=1),$send($CallNode_push_nesting$ques$51,"add_special",["debugger"],(($CallNode$43=function(){var self=null==$CallNode$43.$$s?this:$CallNode$43.$$s;return self.$push(self.$fragment("debugger"))}).$$s=$CallNode_push_nesting$ques$51,$CallNode$43.$$arity=0,$CallNode$43)),$send($CallNode_push_nesting$ques$51,"add_special",["__OPAL_COMPILER_CONFIG__"],(($CallNode$44=function(){var self=null==$CallNode$44.$$s?this:$CallNode$44.$$s;return self.$push(self.$fragment("Opal.hash({ arity_check: "+self.$compiler()["$arity_check?"]()+" })"))}).$$s=$CallNode_push_nesting$ques$51,$CallNode$44.$$arity=0,$CallNode$44)),$send($CallNode_push_nesting$ques$51,"add_special",["lambda"],(($CallNode$45=function(compile_default){var $$46,self=null==$CallNode$45.$$s?this:$CallNode$45.$$s;return null==compile_default&&(compile_default=nil),$send(self.$scope(),"defines_lambda",[],(($$46=function(){null==$$46.$$s||$$46.$$s;return compile_default.$call()}).$$s=self,$$46.$$arity=0,$$46))}).$$s=$CallNode_push_nesting$ques$51,$CallNode$45.$$arity=1,$CallNode$45)),$send($CallNode_push_nesting$ques$51,"add_special",["nesting"],(($CallNode$47=function(compile_default){var push_nesting,self=null==$CallNode$47.$$s?this:$CallNode$47.$$s;return null==compile_default&&(compile_default=nil),push_nesting=self["$push_nesting?"](),$truthy(push_nesting)&&self.$push("(Opal.Module.$$nesting = $nesting, "),compile_default.$call(),$truthy(push_nesting)?self.$push(")"):nil}).$$s=$CallNode_push_nesting$ques$51,$CallNode$47.$$arity=1,$CallNode$47)),$send($CallNode_push_nesting$ques$51,"add_special",["constants"],(($CallNode$48=function(compile_default){var push_nesting,self=null==$CallNode$48.$$s?this:$CallNode$48.$$s;return null==compile_default&&(compile_default=nil),push_nesting=self["$push_nesting?"](),$truthy(push_nesting)&&self.$push("(Opal.Module.$$nesting = $nesting, "),compile_default.$call(),$truthy(push_nesting)?self.$push(")"):nil}).$$s=$CallNode_push_nesting$ques$51,$CallNode$48.$$arity=1,$CallNode$48)),$send($CallNode_push_nesting$ques$51,"add_special",["eval"],(($CallNode$49=function(compile_default){var temp,scope_variables,self=null==$CallNode$49.$$s?this:$CallNode$49.$$s,$ret_or_11=nil;return null==compile_default&&(compile_default=nil),$truthy($truthy($ret_or_11=self.$arglist().$children().$length()["$!="](1))?$ret_or_11:[self.$s("self"),nil]["$include?"](self.$recvr())["$!"]())?compile_default.$call():(temp=self.$scope().$new_temp(),scope_variables=$send(self.$scope().$scope_locals(),"map",[],"to_s".$to_proc()).$inspect(),self.$push("("+temp+" = ",self.$expr(self.$arglist())),self.$push(", typeof Opal.compile === 'function' ? eval(Opal.compile("+temp),self.$push(", {scope_variables: 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function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$CSendNode_default_compile$1,$parent_nesting){$CSendNode_default_compile$1=$klass($base,$CSendNode_default_compile$1,"CSendNode"),[$CSendNode_default_compile$1].concat($parent_nesting);return $CSendNode_default_compile$1.$handle("csend"),Opal.def($CSendNode_default_compile$1,"$default_compile",$CSendNode_default_compile$1=function(){var $$2;return this.$helper("send"),$send(this,"conditional_send",[this.$recv(this.$receiver_sexp())],(($$2=function(receiver_temp){var self=null==$$2.$$s?this:$$2.$$s;return 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function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$JsAttrNode_compile$1,$parent_nesting){[$JsAttrNode_compile$1=$klass($base,$JsAttrNode_compile$1,"JsAttrNode")].concat($parent_nesting),$JsAttrNode_compile$1.$handle("jsattr"),$JsAttrNode_compile$1.$children("recvr","property"),Opal.def($JsAttrNode_compile$1,"$compile",$JsAttrNode_compile$1=function(){return this.$push(this.$recv(this.$recvr()),"[",this.$expr(this.$property()),"]")},$JsAttrNode_compile$1.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$JsAttrAsgnNode_compile$2,$parent_nesting){[$JsAttrAsgnNode_compile$2=$klass($base,$JsAttrAsgnNode_compile$2,"JsAttrAsgnNode")].concat($parent_nesting),$JsAttrAsgnNode_compile$2.$handle("jsattrasgn"),$JsAttrAsgnNode_compile$2.$children("recvr","property","value"),Opal.def($JsAttrAsgnNode_compile$2,"$compile",$JsAttrAsgnNode_compile$2=function(){return 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nil;\n"}).$$s=self,$$19.$$arity=1,$$19)),gv=$send(self.$gvars(),"map",[],(($$20=function(gvar){null==$$20.$$s||$$20.$$s;return null==gvar&&(gvar=nil),"if ($gvars"+gvar+" == null) $gvars"+gvar+" = nil;\n"}).$$s=self,$$20.$$arity=1,$$20)),indent=self.compiler.$parser_indent(),str=$truthy(vars["$empty?"]())?"":"var "+vars.$join(", ")+";\n",$truthy(self.$ivars()["$empty?"]())||(str=$rb_plus(str,""+indent+iv.$join(indent))),$truthy(self.$gvars()["$empty?"]())||(str=$rb_plus(str,""+indent+gv.$join(indent))),result=$truthy($truthy($ret_or_7=self["$class?"]())?self.proto_ivars["$empty?"]()["$!"]():$ret_or_7)?str+"\n"+indent+$send(self.proto_ivars,"map",[],(($$21=function(i){null==$$21.$$s||$$21.$$s;return null==i&&(i=nil),"self.$$prototype"+i}).$$s=self,$$21.$$arity=1,$$21)).$join(" = ")+" = nil;":str,self.$fragment(result)},$ScopeNode_new_refinements_temp$53.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$add_scope_ivar",$ScopeNode_new_refinements_temp$53=function(ivar){return $truthy(this["$def_in_class?"]())?this.parent.$add_proto_ivar(ivar):$truthy(this.ivars["$include?"](ivar))?nil:this.ivars["$<<"](ivar)},$ScopeNode_new_refinements_temp$53.$$arity=1),Opal.def($ScopeNode_refinements_temp$54,"$add_scope_gvar",$ScopeNode_new_refinements_temp$53=function(gvar){return $truthy(this.gvars["$include?"](gvar))?nil:this.gvars["$<<"](gvar)},$ScopeNode_new_refinements_temp$53.$$arity=1),Opal.def($ScopeNode_refinements_temp$54,"$add_proto_ivar",$ScopeNode_new_refinements_temp$53=function(ivar){return $truthy(this.proto_ivars["$include?"](ivar))?nil:this.proto_ivars["$<<"](ivar)},$ScopeNode_new_refinements_temp$53.$$arity=1),Opal.def($ScopeNode_refinements_temp$54,"$add_arg",$ScopeNode_new_refinements_temp$53=function(arg){return $truthy(this.args["$include?"](arg))||this.args["$<<"](arg),arg},$ScopeNode_new_refinements_temp$53.$$arity=1),Opal.def($ScopeNode_refinements_temp$54,"$add_scope_local",$ScopeNode_new_refinements_temp$53=function(local){return $truthy(this["$has_local?"](local))?nil:this.locals["$<<"](local)},$ScopeNode_new_refinements_temp$53.$$arity=1),Opal.def($ScopeNode_refinements_temp$54,"$has_local?",$ScopeNode_new_refinements_temp$53=function(local){var self=this,$ret_or_8=nil,$ret_or_9=nil,$ret_or_10=nil;return!!$truthy($truthy($ret_or_8=$truthy($ret_or_9=self.locals["$include?"](local))?$ret_or_9:self.args["$include?"](local))?$ret_or_8:self.temps["$include?"](local))||!!$truthy($truthy($ret_or_10=self.parent)?self.type["$=="]("iter"):$ret_or_10)&&self.parent["$has_local?"](local)},$ScopeNode_new_refinements_temp$53.$$arity=1),Opal.def($ScopeNode_refinements_temp$54,"$scope_locals",$ScopeNode_new_refinements_temp$53=function(){var self=this,$ret_or_11=nil;return self.locals["$|"](self.args)["$|"]($truthy($truthy($ret_or_11=self.parent)?self.type["$=="]("iter"):$ret_or_11)?self.parent.$scope_locals():[])},$ScopeNode_new_refinements_temp$53.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$add_scope_temp",$ScopeNode_new_refinements_temp$53=function(tmp){return $truthy(this["$has_temp?"](tmp))?nil:this.temps.$push(tmp)},$ScopeNode_new_refinements_temp$53.$$arity=1),Opal.def($ScopeNode_refinements_temp$54,"$has_temp?",$ScopeNode_new_refinements_temp$53=function(tmp){return this.temps["$include?"](tmp)},$ScopeNode_new_refinements_temp$53.$$arity=1),Opal.def($ScopeNode_refinements_temp$54,"$new_temp",$ScopeNode_new_refinements_temp$53=function(){var tmp;return $truthy(this.queue["$empty?"]())?(tmp=this.$next_temp(),this.temps["$<<"](tmp),tmp):this.queue.$pop()},$ScopeNode_new_refinements_temp$53.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$next_temp",$ScopeNode_new_refinements_temp$53=function(){var $$33,self=this,tmp=nil,tmp=nil;return function(){var $brk=Opal.new_brk();try{$send(self,"loop",[],(($$33=function(){var self=null==$$33.$$s?this:$$33.$$s;if(null==self.unique&&(self.unique=nil),tmp="$"+self.unique,self.unique=self.unique.$succ(),$truthy(self["$has_local?"](tmp)))return nil;Opal.brk(nil,$brk)}).$$s=self,$$33.$$brk=$brk,$$33.$$arity=0,$$33))}catch(err){if(err===$brk)return err.$v;throw err}}(),tmp},$ScopeNode_new_refinements_temp$53.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$queue_temp",$ScopeNode_new_refinements_temp$53=function(name){return this.queue["$<<"](name)},$ScopeNode_new_refinements_temp$53.$$arity=1),Opal.def($ScopeNode_refinements_temp$54,"$push_while",$ScopeNode_new_refinements_temp$53=function(){var info=$hash2([],{});return this.while_stack.$push(info),info},$ScopeNode_new_refinements_temp$53.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$pop_while",$ScopeNode_new_refinements_temp$53=function(){return this.while_stack.$pop()},$ScopeNode_new_refinements_temp$53.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$in_while?",$ScopeNode_new_refinements_temp$53=function(){return this.while_stack["$empty?"]()["$!"]()},$ScopeNode_new_refinements_temp$53.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$uses_block!",$ScopeNode_new_refinements_temp$53=function(){var self=this,$ret_or_12=nil;return $truthy($truthy($ret_or_12=self.type["$=="]("iter"))?self.parent:$ret_or_12)?self.parent["$uses_block!"]():(self.uses_block=!0,self["$identify!"]())},$ScopeNode_new_refinements_temp$53.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$identify!",$ScopeNode_new_refinements_temp$53=function(name){var self=this,$ret_or_13=nil,$ret_or_14=nil,$ret_or_15=nil;return null==name&&(name=nil),$truthy(self.identity)||(name=$truthy($ret_or_13=name)?$ret_or_13:[$truthy($ret_or_14=self.$parent())?$truthy($ret_or_15=self.$parent().$name())?$ret_or_15:self.$parent().$scope_name():$ret_or_14,self.$mid()].$compact().$join("_"),self.identity=self.compiler.$unique_temp(name),$truthy(self.parent)&&self.parent.$add_scope_temp(self.identity)),self.identity},$ScopeNode_new_refinements_temp$53.$$arity=-1),$ScopeNode_refinements_temp$54.$attr_reader("identity"),Opal.def($ScopeNode_refinements_temp$54,"$find_parent_def",$ScopeNode_new_refinements_temp$53=function(){for(var scope=nil,$ret_or_16=nil,scope=this;$truthy(scope=scope.$parent());)if($truthy($truthy($ret_or_16=scope["$def?"]())?$ret_or_16:scope["$lambda?"]()))return scope;return nil},$ScopeNode_new_refinements_temp$53.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$super_chain",$ScopeNode_new_refinements_temp$53=function(){for(var chain=nil,scope=nil,defn=nil,mid=nil,$a=[[],this,"null","null"],chain=$a[0],scope=$a[1],defn=$a[2],mid=$a[3];$truthy(scope);){if(!scope.$type()["$=="]("iter")){if($truthy(["def","defs"]["$include?"](scope.$type()))){defn=scope["$identify!"](),mid="'"+scope.$mid()+"'";break}break}chain["$<<"](scope["$identify!"]()),$truthy(scope.$parent())&&(scope=scope.$parent())}return[chain,defn,mid]},$ScopeNode_new_refinements_temp$53.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$uses_block?",$ScopeNode_new_refinements_temp$53=function(){return this.uses_block},$ScopeNode_new_refinements_temp$53.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$has_rescue_else?",$ScopeNode_new_refinements_temp$53=function(){return this.$rescue_else_sexp()["$nil?"]()["$!"]()},$ScopeNode_new_refinements_temp$53.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$in_rescue",$ScopeNode_in_rescue$44=function(node){var result,$iter=$ScopeNode_in_rescue$44.$$p,$yield=$iter||nil,self=this,$ret_or_17=nil;return $iter&&($ScopeNode_in_rescue$44.$$p=null),self.rescues=$truthy($ret_or_17=self.rescues)?$ret_or_17:[],self.rescues.$push(node),result=Opal.yieldX($yield,[]),self.rescues.$pop(),result},$ScopeNode_in_rescue$44.$$arity=1),Opal.def($ScopeNode_refinements_temp$54,"$current_rescue",$ScopeNode_new_refinements_temp$53=function(){return this.rescues.$last()},$ScopeNode_new_refinements_temp$53.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$in_resbody",$ScopeNode_in_resbody$46=function(){var result,$iter=$ScopeNode_in_resbody$46.$$p,$yield=$iter||nil;return $iter&&($ScopeNode_in_resbody$46.$$p=null),$yield===nil?nil:(this.in_resbody=!0,result=Opal.yieldX($yield,[]),this.in_resbody=!1,result)},$ScopeNode_in_resbody$46.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$in_resbody?",$ScopeNode_new_refinements_temp$53=function(){return this.in_resbody},$ScopeNode_new_refinements_temp$53.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$in_ensure",$ScopeNode_in_ensure$48=function(){var result,$iter=$ScopeNode_in_ensure$48.$$p,$yield=$iter||nil;return $iter&&($ScopeNode_in_ensure$48.$$p=null),$yield===nil?nil:(this.in_ensure=!0,result=Opal.yieldX($yield,[]),this.in_ensure=!1,result)},$ScopeNode_in_ensure$48.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$in_ensure?",$ScopeNode_new_refinements_temp$53=function(){return this.in_ensure},$ScopeNode_new_refinements_temp$53.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$gen_retry_id",$ScopeNode_new_refinements_temp$53=function(){var self=this,$ret_or_18=nil;return self.next_retry_id=$truthy($ret_or_18=self.next_retry_id)?$ret_or_18:"retry_0",self.next_retry_id=self.next_retry_id.$succ()},$ScopeNode_new_refinements_temp$53.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$accepts_using?",$ScopeNode_new_refinements_temp$53=function(){return[$$($nesting,"TopNode"),$$($nesting,"ModuleNode"),$$($nesting,"ClassNode"),$$($nesting,"IterNode")]["$include?"](this.$class())},$ScopeNode_new_refinements_temp$53.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$collect_refinements_temps",$ScopeNode_new_refinements_temp$53=function(temps){return null==temps&&(temps=[]),$truthy(this.refinements_temp)&&temps["$<<"](this.refinements_temp),$truthy(this.$parent())?this.$parent().$collect_refinements_temps(temps):temps},$ScopeNode_new_refinements_temp$53.$$arity=-1),Opal.def($ScopeNode_refinements_temp$54,"$new_refinements_temp",$ScopeNode_new_refinements_temp$53=function(){var var$=this.$compiler().$unique_temp("$refn");return this.$add_scope_local(var$),var$},$ScopeNode_new_refinements_temp$53.$$arity=0),Opal.def($ScopeNode_refinements_temp$54,"$refinements_temp",$ScopeNode_refinements_temp$54=function(){var $a=[this.refinements_temp,this.$new_refinements_temp()],curr=$a[1];return[$a[0],this.refinements_temp=curr]},$ScopeNode_refinements_temp$54.$$arity=0),nil&&"refinements_temp"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/module"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send=Opal.send,$truthy=Opal.truthy;return Opal.add_stubs(["$require","$handle","$children","$name_and_base","$helper","$push","$line","$in_scope","$name=","$scope","$-","$compile_body","$private","$cid","$nil?","$expr","$add_temp","$stmt","$returns","$compiler","$body","$s","$empty_line","$to_vars"]),self.$require("opal/nodes/scope"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$ModuleNode_compile_body$4,$ModuleNode_name_and_base$3){$ModuleNode_compile_body$4=$klass($base,$ModuleNode_compile_body$4,"ModuleNode"),[$ModuleNode_compile_body$4].concat($ModuleNode_name_and_base$3);return $ModuleNode_compile_body$4.$handle("module"),$ModuleNode_compile_body$4.$children("cid","body"),Opal.def($ModuleNode_compile_body$4,"$compile",$ModuleNode_name_and_base$3=function(){var $$2,$a=this.$name_and_base(),$a=Opal.to_ary($a),name=null==$a[0]?nil:$a[0],base=null==$a[1]?nil:$a[1];return this.$helper("module"),this.$push("(function($base, $parent_nesting) {"),this.$line("  var self = $module($base, '"+name+"');"),$send(this,"in_scope",[],(($$2=function(){var rhs,self=null==$$2.$$s?this:$$2.$$s,lhs=nil,lhs=[name];return $send(self.$scope(),"name=",Opal.to_a(lhs)),rhs=1,"number"==typeof(lhs=lhs.length)&&"number"==typeof rhs||lhs["$-"](rhs),self.$compile_body()}).$$s=this,$$2.$$arity=0,$$2)),this.$line("})(",base,", $nesting)")},$ModuleNode_name_and_base$3.$$arity=0),$ModuleNode_compile_body$4.$private(),Opal.def($ModuleNode_compile_body$4,"$name_and_base",$ModuleNode_name_and_base$3=function(){var base=nil,$a=this.$cid().$children(),$a=Opal.to_ary($a),base=null==$a[0]?nil:$a[0],name=null==$a[1]?nil:$a[1];return $truthy(base["$nil?"]())?[name,"$nesting[0]"]:[name,this.$expr(base)]},$ModuleNode_name_and_base$3.$$arity=0),Opal.def($ModuleNode_compile_body$4,"$compile_body",$ModuleNode_compile_body$4=function(){var body_code,self=this,$ret_or_1=nil;return self.$add_temp("$nesting = [self].concat($parent_nesting)"),body_code=self.$stmt(self.$compiler().$returns($truthy($ret_or_1=self.$body())?$ret_or_1:self.$s("nil"))),self.$empty_line(),self.$line(self.$scope().$to_vars()),self.$line(body_code)},$ModuleNode_compile_body$4.$$arity=0),nil&&"compile_body"}($nesting[0],$$($nesting,"ScopeNode"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/class"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send=Opal.send,$truthy=Opal.truthy;return Opal.add_stubs(["$require","$handle","$children","$name_and_base","$helper","$push","$line","$in_scope","$name=","$scope","$-","$compile_body","$super_code","$sup","$expr"]),self.$require("opal/nodes/module"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$ClassNode_super_code$3,$ClassNode_compile$1){$ClassNode_super_code$3=$klass($base,$ClassNode_super_code$3,"ClassNode"),[$ClassNode_super_code$3].concat($ClassNode_compile$1);return $ClassNode_super_code$3.$handle("class"),$ClassNode_super_code$3.$children("cid","sup","body"),Opal.def($ClassNode_super_code$3,"$compile",$ClassNode_compile$1=function(){var $$2,$a=this.$name_and_base(),$a=Opal.to_ary($a),name=null==$a[0]?nil:$a[0],base=null==$a[1]?nil:$a[1];return this.$helper("klass"),this.$push("(function($base, $super, $parent_nesting) {"),this.$line("  var self = $klass($base, $super, '"+name+"');"),$send(this,"in_scope",[],(($$2=function(){var rhs,self=null==$$2.$$s?this:$$2.$$s,lhs=nil,lhs=[name];return $send(self.$scope(),"name=",Opal.to_a(lhs)),rhs=1,"number"==typeof(lhs=lhs.length)&&"number"==typeof rhs||lhs["$-"](rhs),self.$compile_body()}).$$s=this,$$2.$$arity=0,$$2)),this.$line("})(",base,", ",this.$super_code(),", $nesting)")},$ClassNode_compile$1.$$arity=0),Opal.def($ClassNode_super_code$3,"$super_code",$ClassNode_super_code$3=function(){return $truthy(this.$sup())?this.$expr(this.$sup()):"null"},$ClassNode_super_code$3.$$arity=0),nil&&"super_code"}($nesting[0],$$($nesting,"ModuleNode"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/singleton_class"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send=Opal.send;return Opal.add_stubs(["$require","$handle","$children","$push","$in_scope","$add_temp","$stmt","$returns","$compiler","$body","$line","$to_vars","$scope","$recv","$object"]),self.$require("opal/nodes/scope"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$SingletonClassNode_compile$1,$parent_nesting){$SingletonClassNode_compile$1=$klass($base,$SingletonClassNode_compile$1,"SingletonClassNode"),[$SingletonClassNode_compile$1].concat($parent_nesting);return $SingletonClassNode_compile$1.$handle("sclass"),$SingletonClassNode_compile$1.$children("object","body"),Opal.def($SingletonClassNode_compile$1,"$compile",$SingletonClassNode_compile$1=function(){var $$2;return this.$push("(function(self, $parent_nesting) {"),$send(this,"in_scope",[],(($$2=function(){var body_stmt,self=null==$$2.$$s?this:$$2.$$s;return self.$add_temp("$nesting = [self].concat($parent_nesting)"),body_stmt=self.$stmt(self.$compiler().$returns(self.$body())),self.$line(self.$scope().$to_vars()),self.$line(body_stmt)}).$$s=this,$$2.$$arity=0,$$2)),this.$line("})(Opal.get_singleton_class(",this.$recv(this.$object()),"), $nesting)")},$SingletonClassNode_compile$1.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"ScopeNode"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/arg"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass;return Opal.add_stubs(["$require","$handle","$children","$add_arg","$scope","$name","$push","$to_s"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Args")].concat($nesting);return function($base,$ArgNode_compile$1,$parent_nesting){$ArgNode_compile$1=$klass($base,$ArgNode_compile$1,"ArgNode"),[$ArgNode_compile$1].concat($parent_nesting);return $ArgNode_compile$1.$handle("arg"),$ArgNode_compile$1.$children("name"),Opal.def($ArgNode_compile$1,"$compile",$ArgNode_compile$1=function(){return this.$scope().$add_arg(this.$name()),this.$push(this.$name().$to_s())},$ArgNode_compile$1.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/arity_check"]=function(Opal){function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$send=Opal.send,$truthy=Opal.truthy;return Opal.add_stubs(["$require","$handle","$children","$new","$args_node","$args","$optargs","$restarg","$postargs","$kwargs","$kwoptargs","$kwrestarg","$kwnilarg","$arity","$arity=","$scope","$-","$arity_check?","$compiler","$empty?","$arity_checks","$helper","$inspect","$to_s","$mid","$line","$push","$join","$compact","$size","$all_args","$!","$-@","$<","$+","$>","$<<","$any?","$has_only_optional_kwargs?","$negative_arity","$positive_arity","$select","$include?","$type","$has_required_kwargs?","$all?","$==","$def?","$class_scope?","$top?","$parent","$class?","$name","$module?","$identity"]),self.$require("opal/nodes/base"),self.$require("opal/rewriters/arguments"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$ArityCheckNode_has_required_kwargs$ques$12,$ArityCheckNode_has_only_optional_kwargs$ques$10){var $ArityCheckNode_initialize$1,$nesting=[$ArityCheckNode_has_required_kwargs$ques$12=$klass($base,$ArityCheckNode_has_required_kwargs$ques$12,"ArityCheckNode")].concat($ArityCheckNode_has_only_optional_kwargs$ques$10);$ArityCheckNode_has_required_kwargs$ques$12.$$prototype.kwargs=$ArityCheckNode_has_required_kwargs$ques$12.$$prototype.kwoptargs=$ArityCheckNode_has_required_kwargs$ques$12.$$prototype.kwrestarg=$ArityCheckNode_has_required_kwargs$ques$12.$$prototype.all_args=$ArityCheckNode_has_required_kwargs$ques$12.$$prototype.args=$ArityCheckNode_has_required_kwargs$ques$12.$$prototype.optargs=$ArityCheckNode_has_required_kwargs$ques$12.$$prototype.restarg=$ArityCheckNode_has_required_kwargs$ques$12.$$prototype.postargs=$ArityCheckNode_has_required_kwargs$ques$12.$$prototype.arity_checks=nil,$ArityCheckNode_has_required_kwargs$ques$12.$handle("arity_check"),$ArityCheckNode_has_required_kwargs$ques$12.$children("args_node"),Opal.def($ArityCheckNode_has_required_kwargs$ques$12,"$initialize",$ArityCheckNode_initialize$1=function($a){var $zuper_ii,$iter=$ArityCheckNode_initialize$1.$$p,arguments$=nil,$zuper=nil,$zuper_i=nil;for($iter&&($ArityCheckNode_initialize$1.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return Opal.slice.call(arguments,0,arguments.length),$send2(this,$find_super(this,"initialize",$ArityCheckNode_initialize$1,!1,!0),"initialize",$zuper,$iter),arguments$=$$$($$($nesting,"Rewriters"),"Arguments").$new(this.$args_node().$children()),this.args=arguments$.$args(),this.optargs=arguments$.$optargs(),this.restarg=arguments$.$restarg(),this.postargs=arguments$.$postargs(),this.kwargs=arguments$.$kwargs(),this.kwoptargs=arguments$.$kwoptargs(),this.kwrestarg=arguments$.$kwrestarg(),this.kwnilarg=arguments$.$kwnilarg()},$ArityCheckNode_initialize$1.$$arity=-1),Opal.def($ArityCheckNode_has_required_kwargs$ques$12,"$compile",$ArityCheckNode_has_only_optional_kwargs$ques$10=function(){var meth,$writer=[this.$arity()];return $send(this.$scope(),"arity=",Opal.to_a($writer)),$rb_minus($writer.length,1),!$truthy(this.$compiler()["$arity_check?"]())||$truthy(this.$arity_checks()["$empty?"]())?nil:(this.$helper("ac"),meth=this.$scope().$mid().$to_s().$inspect(),this.$line("var $arity = arguments.length;"),this.$push(" if ("+this.$arity_checks().$join(" || ")+") { $ac($arity, "+this.$arity()+", this, "+meth+"); }"))},$ArityCheckNode_has_only_optional_kwargs$ques$10.$$arity=0),Opal.def($ArityCheckNode_has_required_kwargs$ques$12,"$kwargs",$ArityCheckNode_has_only_optional_kwargs$ques$10=function(){return[].concat(Opal.to_a(this.kwargs)).concat(Opal.to_a(this.kwoptargs)).concat([this.kwrestarg]).$compact()},$ArityCheckNode_has_only_optional_kwargs$ques$10.$$arity=0),Opal.def($ArityCheckNode_has_required_kwargs$ques$12,"$all_args",$ArityCheckNode_has_only_optional_kwargs$ques$10=function(){var self=this,$ret_or_1=nil;return self.all_args=$truthy($ret_or_1=self.all_args)?$ret_or_1:[].concat(Opal.to_a(self.args)).concat(Opal.to_a(self.optargs)).concat([self.restarg]).concat(Opal.to_a(self.postargs)).concat(Opal.to_a(self.$kwargs())).$compact()},$ArityCheckNode_has_only_optional_kwargs$ques$10.$$arity=0),Opal.def($ArityCheckNode_has_required_kwargs$ques$12,"$arity_checks",$ArityCheckNode_has_only_optional_kwargs$ques$10=function(){var $a,min_arity,max_arity,self=this,arity=nil,lhs=nil,rhs=nil;return $truthy(null!=($a=self.arity_checks)&&$a!==nil?"instance-variable":nil)||(arity=$rb_minus(arity=self.$all_args().$size(),self.optargs.$size()),$truthy(self.restarg)&&(arity=$rb_minus(arity,1)),arity=$rb_minus(arity,self.$kwargs().$size()),$truthy($truthy(lhs=$truthy(rhs=self.optargs["$empty?"]()["$!"]())?rhs:self.$kwargs()["$empty?"]()["$!"]())?lhs:self.restarg)&&(arity=$rb_minus(arity["$-@"](),1)),self.arity_checks=[],$truthy((rhs=0,"number"==typeof(lhs=arity)&&"number"==typeof rhs?lhs<rhs:lhs["$<"](rhs)))?(min_arity=$rb_plus(arity,1)["$-@"](),max_arity=self.$all_args().$size(),$truthy(function(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?rhs<lhs:lhs["$>"](rhs)}(min_arity,0))&&self.arity_checks["$<<"]("$arity < "+min_arity),$truthy(self.restarg)||self.arity_checks["$<<"]("$arity > "+max_arity)):self.arity_checks["$<<"]("$arity !== "+arity)),self.arity_checks},$ArityCheckNode_has_only_optional_kwargs$ques$10.$$arity=0),Opal.def($ArityCheckNode_has_required_kwargs$ques$12,"$arity",$ArityCheckNode_has_only_optional_kwargs$ques$10=function(){var self=this,$ret_or_4=nil,$ret_or_5=nil;return $truthy($truthy($ret_or_4=$truthy($ret_or_5=self.restarg)?$ret_or_5:self.optargs["$any?"]())?$ret_or_4:self["$has_only_optional_kwargs?"]())?self.$negative_arity():self.$positive_arity()},$ArityCheckNode_has_only_optional_kwargs$ques$10.$$arity=0),Opal.def($ArityCheckNode_has_required_kwargs$ques$12,"$negative_arity",$ArityCheckNode_has_only_optional_kwargs$ques$10=function(){var $$8,result=nil,result=$send(this.$all_args(),"select",[],(($$8=function(arg){null==$$8.$$s||$$8.$$s;return null==arg&&(arg=nil),["arg","mlhs"]["$include?"](arg.$type())}).$$s=this,$$8.$$arity=1,$$8)).$size();return $truthy(this["$has_required_kwargs?"]())&&(result=$rb_plus(result,1)),result=$rb_minus(result["$-@"](),1)},$ArityCheckNode_has_only_optional_kwargs$ques$10.$$arity=0),Opal.def($ArityCheckNode_has_required_kwargs$ques$12,"$positive_arity",$ArityCheckNode_has_only_optional_kwargs$ques$10=function(){var result=nil;return result=$rb_minus(result=this.$all_args().$size(),this.$kwargs().$size()),$truthy(this.$kwargs()["$any?"]())&&(result=$rb_plus(result,1)),result},$ArityCheckNode_has_only_optional_kwargs$ques$10.$$arity=0),Opal.def($ArityCheckNode_has_required_kwargs$ques$12,"$has_only_optional_kwargs?",$ArityCheckNode_has_only_optional_kwargs$ques$10=function(){var $$11,$ret_or_6;return $truthy($ret_or_6=this.$kwargs()["$any?"]())?$send(this.$kwargs(),"all?",[],(($$11=function(arg){null==$$11.$$s||$$11.$$s;return null==arg&&(arg=nil),["kwoptarg","kwrestarg"]["$include?"](arg.$type())}).$$s=this,$$11.$$arity=1,$$11)):$ret_or_6},$ArityCheckNode_has_only_optional_kwargs$ques$10.$$arity=0),Opal.def($ArityCheckNode_has_required_kwargs$ques$12,"$has_required_kwargs?",$ArityCheckNode_has_required_kwargs$ques$12=function(){var $$13;return $send(this.$kwargs(),"any?",[],(($$13=function(arg){null==$$13.$$s||$$13.$$s;return null==arg&&(arg=nil),arg.$type()["$=="]("kwarg")}).$$s=this,$$13.$$arity=1,$$13))},$ArityCheckNode_has_required_kwargs$ques$12.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$IterArityCheckNode_compile$14,$parent_nesting){$IterArityCheckNode_compile$14=$klass($base,$IterArityCheckNode_compile$14,"IterArityCheckNode"),[$IterArityCheckNode_compile$14].concat($parent_nesting);return $IterArityCheckNode_compile$14.$handle("iter_arity_check"),Opal.def($IterArityCheckNode_compile$14,"$compile",$IterArityCheckNode_compile$14=function(){var context,identity,parent_scope=nil,$ret_or_7=nil,$ret_or_8=nil,$writer=[this.$arity()];if($send(this.$scope(),"arity=",Opal.to_a($writer)),$rb_minus($writer.length,1),!$truthy(this.$compiler()["$arity_check?"]()))return nil;if($truthy(this.$arity_checks()["$empty?"]()))return nil;for(parent_scope=this.$scope();!$truthy($truthy($ret_or_7=$truthy($ret_or_8=parent_scope["$def?"]())?$ret_or_8:parent_scope["$class_scope?"]())?$ret_or_7:parent_scope["$top?"]());)parent_scope=parent_scope.$parent();return context=$truthy(parent_scope["$top?"]())?"'<main>'":$truthy(parent_scope["$def?"]())?"'"+parent_scope.$mid()+"'":$truthy(parent_scope["$class?"]())?"'<class:"+parent_scope.$name()+">'":$truthy(parent_scope["$module?"]())?"'<module:"+parent_scope.$name()+">'":nil,identity=this.$scope().$identity(),this.$line("if ("+identity+".$$is_lambda || "+identity+".$$define_meth) {"),this.$line("  var $arity = arguments.length;"),this.$line("  if ("+this.$arity_checks().$join(" || ")+") { Opal.block_ac($arity, "+this.$arity()+", "+context+"); }"),this.$line("}")},$IterArityCheckNode_compile$14.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"ArityCheckNode"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/ensure_kwargs_are_kwargs"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass;return Opal.add_stubs(["$require","$handle","$helper","$line"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Args")].concat($nesting);return function($base,$EnsureKwargsAreKwargs_compile$1,$parent_nesting){$EnsureKwargsAreKwargs_compile$1=$klass($base,$EnsureKwargsAreKwargs_compile$1,"EnsureKwargsAreKwargs"),[$EnsureKwargsAreKwargs_compile$1].concat($parent_nesting);return $EnsureKwargsAreKwargs_compile$1.$handle("ensure_kwargs_are_kwargs"),Opal.def($EnsureKwargsAreKwargs_compile$1,"$compile",$EnsureKwargsAreKwargs_compile$1=function(){return this.$helper("hash2"),this.$line("if ($kwargs == null) {"),this.$line("  $kwargs = $hash2([], {});"),this.$line("} else if (!$kwargs.$$is_hash) {"),this.$line("  throw Opal.ArgumentError.$new('expected kwargs');"),this.$line("}")},$EnsureKwargsAreKwargs_compile$1.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/extract_block_arg"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send=Opal.send;return Opal.add_stubs(["$require","$handle","$children","$uses_block!","$scope","$add_arg","$name","$block_name=","$-","$identity","$block_name","$add_temp","$line"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Args")].concat($nesting);return function($base,$ExtractBlockarg_compile$1,$parent_nesting){$ExtractBlockarg_compile$1=$klass($base,$ExtractBlockarg_compile$1,"ExtractBlockarg"),[$ExtractBlockarg_compile$1].concat($parent_nesting);return $ExtractBlockarg_compile$1.$handle("extract_blockarg"),$ExtractBlockarg_compile$1.$children("name"),Opal.def($ExtractBlockarg_compile$1,"$compile",$ExtractBlockarg_compile$1=function(){var scope_name,yielder,rhs,lhs=nil;return this.$scope()["$uses_block!"](),this.$scope().$add_arg(this.$name()),lhs=[this.$name()],$send(this.$scope(),"block_name=",Opal.to_a(lhs)),rhs=1,"number"==typeof(lhs=lhs.length)&&"number"==typeof rhs||lhs["$-"](rhs),scope_name=this.$scope().$identity(),yielder=this.$scope().$block_name(),this.$add_temp("$iter = "+scope_name+".$$p"),this.$add_temp(yielder+" = $iter || nil"),this.$line("if ($iter) "+scope_name+".$$p = null;")},$ExtractBlockarg_compile$1.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/extract_kwarg"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass;return Opal.add_stubs(["$require","$handle","$children","$[]","$meta","$<<","$used_kwargs","$scope","$add_temp","$lvar_name","$line","$inspect","$to_s"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Args")].concat($nesting);return function($base,$ExtractKwarg_compile$1,$parent_nesting){$ExtractKwarg_compile$1=$klass($base,$ExtractKwarg_compile$1,"ExtractKwarg"),[$ExtractKwarg_compile$1].concat($parent_nesting);return $ExtractKwarg_compile$1.$$prototype.sexp=nil,$ExtractKwarg_compile$1.$handle("extract_kwarg"),$ExtractKwarg_compile$1.$children("lvar_name"),Opal.def($ExtractKwarg_compile$1,"$compile",$ExtractKwarg_compile$1=function(){var key_name=nil,key_name=this.sexp.$meta()["$[]"]("arg_name");return this.$scope().$used_kwargs()["$<<"](key_name),this.$add_temp(this.$lvar_name()),this.$line("if (!Opal.hasOwnProperty.call($kwargs.$$smap, '"+key_name+"')) {"),this.$line("  throw Opal.ArgumentError.$new('missing keyword: "+key_name+"');"),this.$line("}"),this.$line(this.$lvar_name()+" = $kwargs.$$smap["+key_name.$to_s().$inspect()+"];")},$ExtractKwarg_compile$1.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/extract_kwargs"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass;return Opal.add_stubs(["$require","$handle","$add_temp","$line"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Args")].concat($nesting);return function($base,$ExtractKwargs_compile$1,$parent_nesting){$ExtractKwargs_compile$1=$klass($base,$ExtractKwargs_compile$1,"ExtractKwargs"),[$ExtractKwargs_compile$1].concat($parent_nesting);return $ExtractKwargs_compile$1.$handle("extract_kwargs"),Opal.def($ExtractKwargs_compile$1,"$compile",$ExtractKwargs_compile$1=function(){return this.$add_temp("$kwargs"),this.$line("$kwargs = Opal.extract_kwargs($post_args)")},$ExtractKwargs_compile$1.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/extract_kwoptarg"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass;return Opal.add_stubs(["$require","$handle","$children","$[]","$meta","$<<","$used_kwargs","$scope","$add_temp","$lvar_name","$line","$inspect","$to_s","$==","$default_value","$expr"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Args")].concat($nesting);return function($base,$ExtractKwoptarg_compile$1,$parent_nesting){$ExtractKwoptarg_compile$1=$klass($base,$ExtractKwoptarg_compile$1,"ExtractKwoptarg"),[$ExtractKwoptarg_compile$1].concat($parent_nesting);return $ExtractKwoptarg_compile$1.$$prototype.sexp=nil,$ExtractKwoptarg_compile$1.$handle("extract_kwoptarg"),$ExtractKwoptarg_compile$1.$children("lvar_name","default_value"),Opal.def($ExtractKwoptarg_compile$1,"$compile",$ExtractKwoptarg_compile$1=function(){var key_name=nil,key_name=this.sexp.$meta()["$[]"]("arg_name");return this.$scope().$used_kwargs()["$<<"](key_name),this.$add_temp(this.$lvar_name()),this.$line(this.$lvar_name()+" = $kwargs.$$smap["+key_name.$to_s().$inspect()+"];"),this.$default_value().$children()["$[]"](1)["$=="]("undefined")?nil:(this.$line("if ("+this.$lvar_name()+" == null) {"),this.$line("  "+this.$lvar_name()+" = ",this.$expr(this.$default_value())),this.$line("}"))},$ExtractKwoptarg_compile$1.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/extract_kwrestarg"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send;return Opal.add_stubs(["$require","$handle","$children","$name","$add_temp","$line","$used_kwargs","$map","$scope","$join"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Args")].concat($nesting);return function($base,$ExtractKwrestarg_used_kwargs$2,$ExtractKwrestarg_compile$1){$ExtractKwrestarg_used_kwargs$2=$klass($base,$ExtractKwrestarg_used_kwargs$2,"ExtractKwrestarg"),[$ExtractKwrestarg_used_kwargs$2].concat($ExtractKwrestarg_compile$1);return $ExtractKwrestarg_used_kwargs$2.$handle("extract_kwrestarg"),$ExtractKwrestarg_used_kwargs$2.$children("name"),Opal.def($ExtractKwrestarg_used_kwargs$2,"$compile",$ExtractKwrestarg_compile$1=function(){return $truthy(this.$name())?(this.$add_temp(this.$name()),this.$line(this.$name()+" = Opal.kwrestargs($kwargs, "+this.$used_kwargs()+");")):nil},$ExtractKwrestarg_compile$1.$$arity=0),Opal.def($ExtractKwrestarg_used_kwargs$2,"$used_kwargs",$ExtractKwrestarg_used_kwargs$2=function(){var $$3;return"{"+$send(this.$scope().$used_kwargs(),"map",[],(($$3=function(arg_name){null==$$3.$$s||$$3.$$s;return null==arg_name&&(arg_name=nil),"'"+arg_name+"': true"}).$$s=this,$$3.$$arity=1,$$3)).$join(",")+"}"},$ExtractKwrestarg_used_kwargs$2.$$arity=0),nil&&"used_kwargs"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/extract_optarg"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass;return Opal.add_stubs(["$require","$handle","$children","$==","$[]","$default_value","$line","$name","$expr"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Args")].concat($nesting);return function($base,$ExtractOptargNode_compile$1,$parent_nesting){$ExtractOptargNode_compile$1=$klass($base,$ExtractOptargNode_compile$1,"ExtractOptargNode"),[$ExtractOptargNode_compile$1].concat($parent_nesting);return $ExtractOptargNode_compile$1.$handle("extract_optarg"),$ExtractOptargNode_compile$1.$children("name","default_value"),Opal.def($ExtractOptargNode_compile$1,"$compile",$ExtractOptargNode_compile$1=function(){return this.$default_value().$children()["$[]"](1)["$=="]("undefined")?nil:(this.$line("if ("+this.$name()+" == null) {"),this.$line("  "+this.$name()+" = ",this.$expr(this.$default_value()),";"),this.$line("}"))},$ExtractOptargNode_compile$1.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/extract_post_arg"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass;return Opal.add_stubs(["$require","$handle","$children","$add_temp","$name","$line"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Args")].concat($nesting);return function($base,$ExtractPostArg_compile$1,$parent_nesting){$ExtractPostArg_compile$1=$klass($base,$ExtractPostArg_compile$1,"ExtractPostArg"),[$ExtractPostArg_compile$1].concat($parent_nesting);return $ExtractPostArg_compile$1.$handle("extract_post_arg"),$ExtractPostArg_compile$1.$children("name"),Opal.def($ExtractPostArg_compile$1,"$compile",$ExtractPostArg_compile$1=function(){return this.$add_temp(this.$name()),this.$line(this.$name()+" = $post_args[0];"),this.$line("$post_args.splice(0, 1);"),this.$line("if ("+this.$name()+" == null) {"),this.$line("  "+this.$name()+" = nil"),this.$line("}")},$ExtractPostArg_compile$1.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/extract_post_optarg"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass;return Opal.add_stubs(["$require","$handle","$children","$add_temp","$name","$line","$args_to_keep","$==","$[]","$default_value","$expr"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Args")].concat($nesting);return function($base,$ExtractPostOptarg_compile$1,$parent_nesting){$ExtractPostOptarg_compile$1=$klass($base,$ExtractPostOptarg_compile$1,"ExtractPostOptarg"),[$ExtractPostOptarg_compile$1].concat($parent_nesting);return $ExtractPostOptarg_compile$1.$handle("extract_post_optarg"),$ExtractPostOptarg_compile$1.$children("name","default_value","args_to_keep"),Opal.def($ExtractPostOptarg_compile$1,"$compile",$ExtractPostOptarg_compile$1=function(){return this.$add_temp(this.$name()),this.$line("if ($post_args.length > "+this.$args_to_keep()+") {"),this.$line("  "+this.$name()+" = $post_args[0];"),this.$line("  $post_args.splice(0, 1);"),this.$line("}"),this.$default_value().$children()["$[]"](1)["$=="]("undefined")?nil:(this.$line("if ("+this.$name()+" == null) {"),this.$line("  "+this.$name()+" = ",this.$expr(this.$default_value()),";"),this.$line("}"))},$ExtractPostOptarg_compile$1.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/extract_restarg"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy;return Opal.add_stubs(["$require","$handle","$children","$name","$add_temp","$==","$args_to_keep","$line","$!="]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Args")].concat($nesting);return function($base,$ExtractRestarg_compile$1,$parent_nesting){$ExtractRestarg_compile$1=$klass($base,$ExtractRestarg_compile$1,"ExtractRestarg"),[$ExtractRestarg_compile$1].concat($parent_nesting);return $ExtractRestarg_compile$1.$handle("extract_restarg"),$ExtractRestarg_compile$1.$children("name","args_to_keep"),Opal.def($ExtractRestarg_compile$1,"$compile",$ExtractRestarg_compile$1=function(){return $truthy(this.$name())?(this.$add_temp(this.$name()),this.$args_to_keep()["$=="](0)?this.$line(this.$name()+" = $post_args;"):this.$line(this.$name()+" = $post_args.splice(0, $post_args.length - "+this.$args_to_keep()+");")):$truthy(this.$args_to_keep()["$!="](0))?this.$line("$post_args.splice(0, $post_args.length - "+this.$args_to_keep()+");"):nil},$ExtractRestarg_compile$1.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/fake_arg"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass;return Opal.add_stubs(["$require","$handle","$next_temp","$scope","$add_arg","$push"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Args")].concat($nesting);return function($base,$FakeArgNode_compile$1,$parent_nesting){$FakeArgNode_compile$1=$klass($base,$FakeArgNode_compile$1,"FakeArgNode"),[$FakeArgNode_compile$1].concat($parent_nesting);return $FakeArgNode_compile$1.$handle("fake_arg"),Opal.def($FakeArgNode_compile$1,"$compile",$FakeArgNode_compile$1=function(){var name=this.$scope().$next_temp();return this.$scope().$add_arg(name),this.$push(name)},$FakeArgNode_compile$1.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/initialize_iterarg"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass;return Opal.add_stubs(["$require","$handle","$children","$line","$name"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Args")].concat($nesting);return function($base,$InitializeIterarg_compile$1,$parent_nesting){$InitializeIterarg_compile$1=$klass($base,$InitializeIterarg_compile$1,"InitializeIterarg"),[$InitializeIterarg_compile$1].concat($parent_nesting);return $InitializeIterarg_compile$1.$handle("initialize_iter_arg"),$InitializeIterarg_compile$1.$children("name"),Opal.def($InitializeIterarg_compile$1,"$compile",$InitializeIterarg_compile$1=function(){return this.$line("if ("+this.$name()+" == null) {"),this.$line("  "+this.$name()+" = nil;"),this.$line("}")},$InitializeIterarg_compile$1.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/initialize_shadowarg"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass;return Opal.add_stubs(["$require","$handle","$children","$<<","$locals","$scope","$name","$add_arg","$line"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Args")].concat($nesting);return function($base,$InitializeShadowarg_compile$1,$parent_nesting){$InitializeShadowarg_compile$1=$klass($base,$InitializeShadowarg_compile$1,"InitializeShadowarg"),[$InitializeShadowarg_compile$1].concat($parent_nesting);return $InitializeShadowarg_compile$1.$handle("initialize_shadowarg"),$InitializeShadowarg_compile$1.$children("name"),Opal.def($InitializeShadowarg_compile$1,"$compile",$InitializeShadowarg_compile$1=function(){return this.$scope().$locals()["$<<"](this.$name()),this.$scope().$add_arg(this.$name()),this.$line(this.$name()+" = nil;")},$InitializeShadowarg_compile$1.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/parameters"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$module=(Opal.$$$,Opal.$$,Opal.module),$klass=Opal.klass,$send=Opal.send,$truthy=Opal.truthy;return Opal.add_stubs(["$children","$map","$public_send","$type","$join","$compact","$=="]),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Args")].concat($nesting);return function($Parameters_on_shadowarg$13,$Parameters_on_kwnilarg$12){$Parameters_on_shadowarg$13=$klass($Parameters_on_shadowarg$13,null,"Parameters"),[$Parameters_on_shadowarg$13].concat($Parameters_on_kwnilarg$12);return $Parameters_on_shadowarg$13.$$prototype.args=nil,Opal.def($Parameters_on_shadowarg$13,"$initialize",$Parameters_on_kwnilarg$12=function(args){return this.args=args.$children()},$Parameters_on_kwnilarg$12.$$arity=1),Opal.def($Parameters_on_shadowarg$13,"$to_code",$Parameters_on_kwnilarg$12=function(){var $$3;return"["+$send(this.args,"map",[],(($$3=function(arg){var self=null==$$3.$$s?this:$$3.$$s;return null==arg&&(arg=nil),$send(self,"public_send",["on_"+arg.$type()].concat(Opal.to_a(arg)))}).$$s=this,$$3.$$arity=1,$$3)).$compact().$join(", ")+"]"},$Parameters_on_kwnilarg$12.$$arity=0),Opal.def($Parameters_on_shadowarg$13,"$on_arg",$Parameters_on_kwnilarg$12=function(arg_name){return"['req', '"+arg_name+"']"},$Parameters_on_kwnilarg$12.$$arity=1),Opal.def($Parameters_on_shadowarg$13,"$on_mlhs",$Parameters_on_kwnilarg$12=function($a){Opal.slice.call(arguments,0,arguments.length);return"['req']"},$Parameters_on_kwnilarg$12.$$arity=-1),Opal.def($Parameters_on_shadowarg$13,"$on_optarg",$Parameters_on_kwnilarg$12=function(arg_name){return"['opt', '"+arg_name+"']"},$Parameters_on_kwnilarg$12.$$arity=2),Opal.def($Parameters_on_shadowarg$13,"$on_restarg",$Parameters_on_kwnilarg$12=function(arg_name){return null==arg_name&&(arg_name=nil),$truthy(arg_name)?(arg_name["$=="]("fwd_rest_arg")&&(arg_name="*"),"['rest', '"+arg_name+"']"):"['rest']"},$Parameters_on_kwnilarg$12.$$arity=-1),Opal.def($Parameters_on_shadowarg$13,"$on_kwarg",$Parameters_on_kwnilarg$12=function(arg_name){return"['keyreq', '"+arg_name+"']"},$Parameters_on_kwnilarg$12.$$arity=1),Opal.def($Parameters_on_shadowarg$13,"$on_kwoptarg",$Parameters_on_kwnilarg$12=function(arg_name){return"['key', '"+arg_name+"']"},$Parameters_on_kwnilarg$12.$$arity=2),Opal.def($Parameters_on_shadowarg$13,"$on_kwrestarg",$Parameters_on_kwnilarg$12=function(arg_name){return null==arg_name&&(arg_name=nil),$truthy(arg_name)?"['keyrest', '"+arg_name+"']":"['keyrest']"},$Parameters_on_kwnilarg$12.$$arity=-1),Opal.def($Parameters_on_shadowarg$13,"$on_blockarg",$Parameters_on_kwnilarg$12=function(arg_name){return arg_name["$=="]("fwd_block_arg")&&(arg_name="&"),"['block', '"+arg_name+"']"},$Parameters_on_kwnilarg$12.$$arity=1),Opal.def($Parameters_on_shadowarg$13,"$on_kwnilarg",$Parameters_on_kwnilarg$12=function(){return"['nokey']"},$Parameters_on_kwnilarg$12.$$arity=0),Opal.def($Parameters_on_shadowarg$13,"$on_shadowarg",$Parameters_on_shadowarg$13=function(){return nil},$Parameters_on_shadowarg$13.$$arity=1),nil&&"on_shadowarg"}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/prepare_post_args"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass;return Opal.add_stubs(["$require","$handle","$children","$add_temp","$line","$offset"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Args")].concat($nesting);return function($base,$PreparePostArgs_compile$1,$parent_nesting){$PreparePostArgs_compile$1=$klass($base,$PreparePostArgs_compile$1,"PreparePostArgs"),[$PreparePostArgs_compile$1].concat($parent_nesting);return $PreparePostArgs_compile$1.$handle("prepare_post_args"),$PreparePostArgs_compile$1.$children("offset"),Opal.def($PreparePostArgs_compile$1,"$compile",$PreparePostArgs_compile$1=function(){return this.$add_temp("$post_args"),this.$line("$post_args = Opal.slice.call(arguments, "+this.$offset()+", arguments.length)")},$PreparePostArgs_compile$1.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args"]=function(Opal){function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}function $rb_gt(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?rhs<lhs:lhs["$>"](rhs)}var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$hash2=Opal.hash2,$send=Opal.send,$truthy=Opal.truthy;return Opal.add_stubs(["$require","$handle","$each_with_index","$children","$multiple_underscore?","$[]","$[]=","$-","$+","$>","$s","$type","$!=","$push","$process","$==","$count","$start_with?","$to_s","$first"]),self.$require("opal/nodes/base"),self.$require("opal/nodes/args/arg"),self.$require("opal/nodes/args/arity_check"),self.$require("opal/nodes/args/ensure_kwargs_are_kwargs"),self.$require("opal/nodes/args/extract_block_arg"),self.$require("opal/nodes/args/extract_kwarg"),self.$require("opal/nodes/args/extract_kwargs"),self.$require("opal/nodes/args/extract_kwoptarg"),self.$require("opal/nodes/args/extract_kwrestarg"),self.$require("opal/nodes/args/extract_optarg"),self.$require("opal/nodes/args/extract_post_arg"),self.$require("opal/nodes/args/extract_post_optarg"),self.$require("opal/nodes/args/extract_restarg"),self.$require("opal/nodes/args/fake_arg"),self.$require("opal/nodes/args/initialize_iterarg"),self.$require("opal/nodes/args/initialize_shadowarg"),self.$require("opal/nodes/args/parameters"),self.$require("opal/nodes/args/prepare_post_args"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$ArgsNode_multiple_underscore$ques$3,$ArgsNode_compile$1){$ArgsNode_multiple_underscore$ques$3=$klass($base,$ArgsNode_multiple_underscore$ques$3,"ArgsNode"),[$ArgsNode_multiple_underscore$ques$3].concat($ArgsNode_compile$1);return $ArgsNode_multiple_underscore$ques$3.$handle("args"),Opal.def($ArgsNode_multiple_underscore$ques$3,"$compile",$ArgsNode_compile$1=function(){var $$2,same_arg_counter=nil,same_arg_counter=$hash2([],{});return $send(this.$children(),"each_with_index",[],(($$2=function(arg,idx){var lhs,rhs,self=null==$$2.$$s?this:$$2.$$s,$writer=nil;return null==arg&&(arg=nil),null==idx&&(idx=nil),$truthy(self["$multiple_underscore?"](arg))&&($truthy(same_arg_counter["$[]"](arg))||($writer=[arg,0],$send(same_arg_counter,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]),$writer=[arg,(lhs=same_arg_counter["$[]"](arg),rhs=1,"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs))],$send(same_arg_counter,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)],$truthy($rb_gt(same_arg_counter["$[]"](arg),1))&&(arg=self.$s(arg.$type(),arg.$children()["$[]"](0)+"_$"+same_arg_counter["$[]"](arg)))),$truthy(idx["$!="](0))&&self.$push(", "),self.$push(self.$process(arg))}).$$s=this,$$2.$$arity=2,$$2))},$ArgsNode_compile$1.$$arity=0),Opal.def($ArgsNode_multiple_underscore$ques$3,"$multiple_underscore?",$ArgsNode_multiple_underscore$ques$3=function(arg){var $ret_or_2,$ret_or_3=nil,$ret_or_4=nil;return $truthy($ret_or_2=$truthy($ret_or_3=$truthy($ret_or_4=arg.$type()["$=="]("arg"))?arg.$children().$count()["$=="](1):$ret_or_4)?arg.$children().$first().$to_s()["$start_with?"]("_"):$ret_or_3)?$rb_gt(this.$children().$count(arg),1):$ret_or_2},$ArgsNode_multiple_underscore$ques$3.$$arity=1),nil&&"multiple_underscore?"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/node_with_args"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$truthy=Opal.truthy;return Opal.add_stubs(["$require","$attr_reader","$attr_accessor","$[]","$meta","$s","$original_args","$push","$process","$arity_check_node","$uses_block?","$scope","$identity","$block_name","$add_temp","$line","$to_code","$new"]),self.$require("opal/nodes/scope"),self.$require("opal/nodes/args/parameters"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$NodeWithArgs_parameters_code$5,$NodeWithArgs_compile_block_arg$4){var $NodeWithArgs_initialize$1,$NodeWithArgs_parameters_code$5=$klass($base,$NodeWithArgs_parameters_code$5,"NodeWithArgs"),$nesting=[$NodeWithArgs_parameters_code$5].concat($NodeWithArgs_compile_block_arg$4);return $NodeWithArgs_parameters_code$5.$$prototype.sexp=nil,$NodeWithArgs_parameters_code$5.$attr_reader("used_kwargs"),$NodeWithArgs_parameters_code$5.$attr_accessor("arity"),$NodeWithArgs_parameters_code$5.$attr_reader("original_args"),Opal.def($NodeWithArgs_parameters_code$5,"$initialize",$NodeWithArgs_initialize$1=function($a){var $zuper_ii,$iter=$NodeWithArgs_initialize$1.$$p,$zuper=nil,$zuper_i=nil;for($iter&&($NodeWithArgs_initialize$1.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return Opal.slice.call(arguments,0,arguments.length),$send2(this,$find_super(this,"initialize",$NodeWithArgs_initialize$1,!1,!0),"initialize",$zuper,$iter),this.original_args=this.sexp.$meta()["$[]"]("original_args"),this.used_kwargs=[],this.arity=0},$NodeWithArgs_initialize$1.$$arity=-1),Opal.def($NodeWithArgs_parameters_code$5,"$arity_check_node",$NodeWithArgs_compile_block_arg$4=function(){return this.$s("arity_check",this.$original_args())},$NodeWithArgs_compile_block_arg$4.$$arity=0),Opal.def($NodeWithArgs_parameters_code$5,"$compile_arity_check",$NodeWithArgs_compile_block_arg$4=function(){return this.$push(this.$process(this.$arity_check_node()))},$NodeWithArgs_compile_block_arg$4.$$arity=0),Opal.def($NodeWithArgs_parameters_code$5,"$compile_block_arg",$NodeWithArgs_compile_block_arg$4=function(){var scope_name,yielder,self=this,$ret_or_1=nil;return $truthy(self.$scope()["$uses_block?"]())?(scope_name=self.$scope().$identity(),yielder=$truthy($ret_or_1=self.$scope().$block_name())?$ret_or_1:"$yield",self.$add_temp("$iter = "+scope_name+".$$p"),self.$add_temp(yielder+" = $iter || nil"),self.$line("if ($iter) "+scope_name+".$$p = null;")):nil},$NodeWithArgs_compile_block_arg$4.$$arity=0),Opal.def($NodeWithArgs_parameters_code$5,"$parameters_code",$NodeWithArgs_parameters_code$5=function(){return $$$($$($nesting,"Args"),"Parameters").$new(this.$original_args()).$to_code()},$NodeWithArgs_parameters_code$5.$$arity=0),nil&&"parameters_code"}($nesting[0],$$($nesting,"ScopeNode"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/iter"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send;return Opal.add_stubs(["$require","$handle","$children","$lambda_definition?","$scope","$is_lambda!","$in_scope","$identify!","$add_temp","$process","$inline_args","$compile_arity_check","$stmt","$returned_body","$to_vars","$line","$catch_return","$unshift","$push","$contains_break?","$arity","$arity_check?","$compiler","$parameters_code","$has_top_level_mlhs_arg?","$has_trailing_comma_in_args?","$block_arg","$block_name=","$-","$each","$args","$first","$==","$<<","$updated","$body","$returns","$s","$any?","$original_args","$type","$loc","$expression","$source","$match","$new","$found_break?"]),self.$require("opal/nodes/node_with_args"),self.$require("opal/rewriters/break_finder"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$IterNode_contains_break$ques$11,$IterNode_arity_check_node$10){var $IterNode_contains_break$ques$11=$klass($base,$IterNode_contains_break$ques$11,"IterNode"),$nesting=[$IterNode_contains_break$ques$11].concat($IterNode_arity_check_node$10);return $IterNode_contains_break$ques$11.$$prototype.sexp=nil,$IterNode_contains_break$ques$11.$handle("iter"),$IterNode_contains_break$ques$11.$children("inline_args","body"),Opal.def($IterNode_contains_break$ques$11,"$compile",$IterNode_arity_check_node$10=function(){var $$2,body_code,inline_params=nil,to_vars=nil,identity=nil;return $truthy(this.$scope()["$lambda_definition?"]())&&this["$is_lambda!"](),to_vars=identity=inline_params=nil,$send(this,"in_scope",[],(($$2=function(){var self=null==$$2.$$s?this:$$2.$$s;return identity=self.$scope()["$identify!"](),self.$add_temp("self = "+identity+".$$s == null ? this : "+identity+".$$s"),inline_params=self.$process(self.$inline_args()),self.$compile_arity_check(),body_code=self.$stmt(self.$returned_body()),to_vars=self.$scope().$to_vars(),self.$line(body_code),$truthy(self.$scope().$catch_return())?(self.$unshift("try {\n"),self.$line("} catch ($returner) { if ($returner === Opal.returner) { return $returner.$v }"),self.$push(" throw $returner; }")):nil}).$$s=this,$$2.$$arity=0,$$2)),this.$unshift(to_vars),this.$unshift("("+identity+" = function(",inline_params,"){"),this.$push("}, "+identity+".$$s = self,"),$truthy(this["$contains_break?"]())&&this.$push(" "+identity+".$$brk = $brk,"),this.$push(" "+identity+".$$arity = "+this.$arity()+","),$truthy(this.$compiler()["$arity_check?"]())&&this.$push(" "+identity+".$$parameters = "+this.$parameters_code()+","),$truthy(this["$has_top_level_mlhs_arg?"]())&&this.$push(" "+identity+".$$has_top_level_mlhs_arg = true,"),$truthy(this["$has_trailing_comma_in_args?"]())&&this.$push(" "+identity+".$$has_trailing_comma_in_args = true,"),this.$push(" "+identity+")")},$IterNode_arity_check_node$10.$$arity=0),Opal.def($IterNode_contains_break$ques$11,"$compile_block_arg",$IterNode_arity_check_node$10=function(){var scope_name,rhs,lhs=nil;return $truthy(this.$block_arg())?(lhs=[this.$block_arg()],$send(this.$scope(),"block_name=",Opal.to_a(lhs)),rhs=1,"number"==typeof(lhs=lhs.length)&&"number"==typeof rhs||lhs["$-"](rhs),this.$scope().$add_temp(this.$block_arg()),scope_name=this.$scope()["$identify!"](),this.$line(this.$block_arg()+" = "+scope_name+".$$p || nil;"),this.$line("if ("+this.$block_arg()+") "+scope_name+".$$p = null;")):nil},$IterNode_arity_check_node$10.$$arity=0),Opal.def($IterNode_contains_break$ques$11,"$extract_underscore_args",$IterNode_arity_check_node$10=function(){var $$5,valid_args=nil,caught_blank_argument=nil,valid_args=[],caught_blank_argument=!1;return $send(this.$args().$children(),"each",[],(($$5=function(arg){null==$$5.$$s||$$5.$$s;return null==arg&&(arg=nil),arg.$children().$first()["$=="]("_")?$truthy(caught_blank_argument)?nil:(caught_blank_argument=!0,valid_args["$<<"](arg)):valid_args["$<<"](arg)}).$$s=this,$$5.$$arity=1,$$5)),this.sexp=this.sexp.$updated(nil,[this.$args().$updated(nil,valid_args),this.$body()])},$IterNode_arity_check_node$10.$$arity=0),Opal.def($IterNode_contains_break$ques$11,"$returned_body",$IterNode_arity_check_node$10=function(){var self=this,$ret_or_1=nil;return self.$compiler().$returns($truthy($ret_or_1=self.$body())?$ret_or_1:self.$s("nil"))},$IterNode_arity_check_node$10.$$arity=0),Opal.def($IterNode_contains_break$ques$11,"$has_top_level_mlhs_arg?",$IterNode_arity_check_node$10=function(){var $$8;return $send(this.$original_args().$children(),"any?",[],(($$8=function(arg){null==$$8.$$s||$$8.$$s;return null==arg&&(arg=nil),arg.$type()["$=="]("mlhs")}).$$s=this,$$8.$$arity=1,$$8))},$IterNode_arity_check_node$10.$$arity=0),Opal.def($IterNode_contains_break$ques$11,"$has_trailing_comma_in_args?",$IterNode_arity_check_node$10=function(){var self=this,$ret_or_2=nil;return $truthy($truthy($ret_or_2=self.$original_args().$loc())?self.$original_args().$loc().$expression():$ret_or_2)?self.$original_args().$loc().$expression().$source().$match(/,\s*\|/):nil},$IterNode_arity_check_node$10.$$arity=0),Opal.def($IterNode_contains_break$ques$11,"$arity_check_node",$IterNode_arity_check_node$10=function(){return this.$s("iter_arity_check",this.$original_args())},$IterNode_arity_check_node$10.$$arity=0),Opal.def($IterNode_contains_break$ques$11,"$contains_break?",$IterNode_contains_break$ques$11=function(){var finder=nil;return(finder=$$$($$$($$($nesting,"Opal"),"Rewriters"),"BreakFinder").$new()).$process(this.sexp),finder["$found_break?"]()},$IterNode_contains_break$ques$11.$$arity=0),nil&&"contains_break?"}($nesting[0],$$($nesting,"NodeWithArgs"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/def"]=function(Opal){function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send=Opal.send,$truthy=Opal.truthy;return Opal.add_stubs(["$require","$handle","$children","$in_scope","$mid","$mid=","$scope","$-","$==","$type","$defs=","$identify!","$identity","$block_name=","$process","$inline_args","$stmt","$returns","$compiler","$stmts","$compile_block_arg","$add_temp","$compile_arity_check","$uses_zuper","$prepare_super","$unshift","$current_indent","$to_vars","$line","$catch_return","$push","$valid_name?","$arity","$arity_check?","$parameters_code","$parse_comments?","$comments_code","$enable_source_location?","$source_location","$wrap_with_definition","$wrap","$expr?","$+","$join","$map","$comments","$inspect","$text","$add_local"]),self.$require("opal/nodes/node_with_args"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$DefNode_prepare_super$6,$DefNode_comments_code$4){$DefNode_prepare_super$6=$klass($base,$DefNode_prepare_super$6,"DefNode"),[$DefNode_prepare_super$6].concat($DefNode_comments_code$4);return $DefNode_prepare_super$6.$handle("def"),$DefNode_prepare_super$6.$children("mid","inline_args","stmts"),Opal.def($DefNode_prepare_super$6,"$compile",$DefNode_comments_code$4=function(){var $$2,function_name,self=this,inline_params=nil,scope_name=nil,inline_params=nil,scope_name=nil;return $send(self,"in_scope",[],(($$2=function(){var stmt_code,self=null==$$2.$$s?this:$$2.$$s,$writer=nil;return null==self.sexp&&(self.sexp=nil),$writer=[self.$mid()],$send(self.$scope(),"mid=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)],self.sexp.$type()["$=="]("defs")&&($writer=[!0],$send(self.$scope(),"defs=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]),self.$scope()["$identify!"](),scope_name=self.$scope().$identity(),$writer=["$yield"],$send(self.$scope(),"block_name=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)],inline_params=self.$process(self.$inline_args()),stmt_code=self.$stmt(self.$compiler().$returns(self.$stmts())),self.$compile_block_arg(),self.$add_temp("self = this"),self.$compile_arity_check(),$truthy(self.$scope().$uses_zuper())&&self.$prepare_super(),self.$unshift("\n"+self.$current_indent(),self.$scope().$to_vars()),self.$line(stmt_code),$truthy(self.$scope().$catch_return())?(self.$unshift("try {\n"),self.$line("} catch ($returner) { if ($returner === Opal.returner) { return $returner.$v }"),self.$push(" throw $returner; }")):nil}).$$s=self,$$2.$$arity=0,$$2)),function_name=$truthy(self["$valid_name?"](self.$mid()))?" $$"+self.$mid():"",self.$unshift(") {"),self.$unshift(inline_params),self.$unshift("function"+function_name+"("),$truthy(scope_name)&&self.$unshift(scope_name+" = "),self.$line("}"),self.$push(", "+scope_name+".$$arity = "+self.$arity()),$truthy(self.$compiler()["$arity_check?"]())&&self.$push(", "+scope_name+".$$parameters = "+self.$parameters_code()),$truthy(self.$compiler()["$parse_comments?"]())&&self.$push(", "+scope_name+".$$comments = "+self.$comments_code()),$truthy(self.$compiler()["$enable_source_location?"]())&&self.$push(", "+scope_name+".$$source_location = "+self.$source_location()),self.$wrap_with_definition()},$DefNode_comments_code$4.$$arity=0),Opal.def($DefNode_prepare_super$6,"$wrap_with_definition",$DefNode_comments_code$4=function(){return this.$wrap("Opal.def(self, '$"+this.$mid()+"', ",")"),$truthy(this["$expr?"]())?this.$wrap("(",", nil) && '"+this.$mid()+"'"):this.$unshift("\n"+this.$current_indent())},$DefNode_comments_code$4.$$arity=0),Opal.def($DefNode_prepare_super$6,"$comments_code",$DefNode_comments_code$4=function(){var $$5;return $rb_plus($rb_plus("[",$send(this.$comments(),"map",[],(($$5=function(comment){null==$$5.$$s||$$5.$$s;return null==comment&&(comment=nil),comment.$text().$inspect()}).$$s=this,$$5.$$arity=1,$$5)).$join(", ")),"]")},$DefNode_comments_code$4.$$arity=0),Opal.def($DefNode_prepare_super$6,"$prepare_super",$DefNode_prepare_super$6=function(){return this.$add_local("$zuper"),this.$add_local("$zuper_i"),this.$add_local("$zuper_ii"),this.$line("// Prepare super implicit arguments"),this.$line("for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {"),this.$line("  $zuper[$zuper_i] = arguments[$zuper_i];"),this.$line("}")},$DefNode_prepare_super$6.$$arity=0),nil&&"prepare_super"}($nesting[0],$$($nesting,"NodeWithArgs"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/defs"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy;return Opal.add_stubs(["$require","$handle","$children","$unshift","$expr","$recvr","$mid","$push","$expr?","$wrap"]),self.$require("opal/nodes/def"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$DefsNode_wrap_with_definition$1,$parent_nesting){$DefsNode_wrap_with_definition$1=$klass($base,$DefsNode_wrap_with_definition$1,"DefsNode"),[$DefsNode_wrap_with_definition$1].concat($parent_nesting);return $DefsNode_wrap_with_definition$1.$handle("defs"),$DefsNode_wrap_with_definition$1.$children("recvr","mid","inline_args","stmts"),Opal.def($DefsNode_wrap_with_definition$1,"$wrap_with_definition",$DefsNode_wrap_with_definition$1=function(){return this.$unshift("Opal.defs(",this.$expr(this.$recvr()),", '$"+this.$mid()+"', "),this.$push(")"),$truthy(this["$expr?"]())?this.$wrap("(",", nil) && '"+this.$mid()+"'"):nil},$DefsNode_wrap_with_definition$1.$$arity=0),nil&&"wrap_with_definition"}($nesting[0],$$($nesting,"DefNode"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/if"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send;return Opal.add_stubs(["$require","$handle","$children","$truthy","$falsy","$push","$js_truthy","$test","$indent","$line","$stmt","$==","$type","$needs_wrapper?","$wrap","$returns","$compiler","$true_body","$s","$false_body","$expr?","$recv?","$helper","$new_temp","$top_scope","$excl","$from","$to"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$IfNode_needs_wrapper$ques$6,$IfNode_falsy$5){[$IfNode_needs_wrapper$ques$6=$klass($base,$IfNode_needs_wrapper$ques$6,"IfNode")].concat($IfNode_falsy$5),$IfNode_needs_wrapper$ques$6.$handle("if"),$IfNode_needs_wrapper$ques$6.$children("test","true_body","false_body"),Opal.def($IfNode_needs_wrapper$ques$6,"$compile",$IfNode_falsy$5=function(){var $$2,$$3,falsy=nil,truthy=this.$truthy(),falsy=this.$falsy();return this.$push("if (",this.$js_truthy(this.$test()),") {"),$truthy(truthy)&&$send(this,"indent",[],(($$2=function(){var self=null==$$2.$$s?this:$$2.$$s;return self.$line(self.$stmt(truthy))}).$$s=this,$$2.$$arity=0,$$2)),$truthy(falsy)?falsy.$type()["$=="]("if")?this.$line("} else ",this.$stmt(falsy)):(this.$line("} else {"),$send(this,"indent",[],(($$3=function(){var self=null==$$3.$$s?this:$$3.$$s;return self.$line(self.$stmt(falsy))}).$$s=this,$$3.$$arity=0,$$3)),this.$line("}")):this.$push("}"),$truthy(this["$needs_wrapper?"]())?this.$wrap("(function() {","; return nil; })()"):nil},$IfNode_falsy$5.$$arity=0),Opal.def($IfNode_needs_wrapper$ques$6,"$truthy",$IfNode_falsy$5=function(){var self=this,$ret_or_1=nil;return $truthy(self["$needs_wrapper?"]())?self.$compiler().$returns($truthy($ret_or_1=self.$true_body())?$ret_or_1:self.$s("nil")):self.$true_body()},$IfNode_falsy$5.$$arity=0),Opal.def($IfNode_needs_wrapper$ques$6,"$falsy",$IfNode_falsy$5=function(){var self=this,$ret_or_2=nil;return $truthy(self["$needs_wrapper?"]())?self.$compiler().$returns($truthy($ret_or_2=self.$false_body())?$ret_or_2:self.$s("nil")):self.$false_body()},$IfNode_falsy$5.$$arity=0),Opal.def($IfNode_needs_wrapper$ques$6,"$needs_wrapper?",$IfNode_needs_wrapper$ques$6=function(){var $ret_or_3;return $truthy($ret_or_3=this["$expr?"]())?$ret_or_3:this["$recv?"]()},$IfNode_needs_wrapper$ques$6.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$IFlipFlop_compile$8,$IFlipFlop_excl$7){[$IFlipFlop_compile$8=$klass($base,$IFlipFlop_compile$8,"IFlipFlop")].concat($IFlipFlop_excl$7),$IFlipFlop_compile$8.$handle("iflipflop"),$IFlipFlop_compile$8.$children("from","to"),Opal.def($IFlipFlop_compile$8,"$excl",$IFlipFlop_excl$7=function(){return""},$IFlipFlop_excl$7.$$arity=0),Opal.def($IFlipFlop_compile$8,"$compile",$IFlipFlop_compile$8=function(){var fun_name,ff;return this.$helper("truthy"),ff=(fun_name=this.$top_scope().$new_temp())+".$$ff",this.$push("(typeof "+fun_name+" === 'undefined' ? ("+fun_name+" = function(from, to){"),this.$push("  if (typeof "+ff+" === 'undefined') "+ff+" = false;"),this.$push("  var retval = "+ff+";"),this.$push("  if (!"+ff+") {"),this.$push("    "+ff+" = retval = $truthy(from());"),this.$push("  }"),this.$push("  "+this.$excl()+"if ("+ff+") {"),this.$push("    if ($truthy(to())) "+ff+" = false;"),this.$push("  }"),this.$push("  return retval;"),this.$push("}) : "+fun_name+")("),this.$push("  function() { ",this.$stmt(this.$compiler().$returns(this.$from()))," },"),this.$push("  function() { ",this.$stmt(this.$compiler().$returns(this.$to()))," }"),this.$push(")")},$IFlipFlop_compile$8.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$EFlipFlop_excl$9,$parent_nesting){$EFlipFlop_excl$9=$klass($base,$EFlipFlop_excl$9,"EFlipFlop"),[$EFlipFlop_excl$9].concat($parent_nesting);return $EFlipFlop_excl$9.$handle("eflipflop"),Opal.def($EFlipFlop_excl$9,"$excl",$EFlipFlop_excl$9=function(){return"else "},$EFlipFlop_excl$9.$$arity=0),nil&&"excl"}($nesting[0],$$($nesting,"IFlipFlop"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/logic"]=function(Opal){function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send;return Opal.add_stubs(["$require","$handle","$in_while?","$push","$iter?","$scope","$expr_or_nil","$value","$error","$size","$children","$===","$s","$first","$compile_while","$compile_iter","$[]","$while_loop","$stmt?","$line","$break_val","$nil?","$expr","$[]=","$-","$helper","$identity","$==","$empty_splat?","$recv","$>","$!","$lambda?","$find_parent_def","$expr?","$def?","$return_in_iter?","$return_expr_in_def?","$scope_to_catch_return","$catch_return=","$return_val","$to_s"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$NextNode_value$2,$NextNode_compile$1){[$NextNode_value$2=$klass($base,$NextNode_value$2,"NextNode")].concat($NextNode_compile$1),$NextNode_value$2.$handle("next"),Opal.def($NextNode_value$2,"$compile",$NextNode_compile$1=function(){return $truthy(this["$in_while?"]())?this.$push("continue;"):$truthy(this.$scope()["$iter?"]())?this.$push("return ",this.$expr_or_nil(this.$value()),";"):this.$error("Invalid next")},$NextNode_compile$1.$$arity=0),Opal.def($NextNode_value$2,"$value",$NextNode_value$2=function(){var self=this,$case=nil;return $case=self.$children().$size(),0["$==="]($case)?self.$s("nil"):1["$==="]($case)?self.$children().$first():$send(self,"s",["array"].concat(Opal.to_a(self.$children())))},$NextNode_value$2.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$BreakNode_break_val$6,$BreakNode_compile_iter$5){[$BreakNode_break_val$6=$klass($base,$BreakNode_break_val$6,"BreakNode")].concat($BreakNode_compile_iter$5),$BreakNode_break_val$6.$handle("break"),$BreakNode_break_val$6.$children("value"),Opal.def($BreakNode_break_val$6,"$compile",$BreakNode_compile_iter$5=function(){return $truthy(this["$in_while?"]())?this.$compile_while():$truthy(this.$scope()["$iter?"]())?this.$compile_iter():this.$error("void value expression: cannot use break outside of iter/while")},$BreakNode_compile_iter$5.$$arity=0),Opal.def($BreakNode_break_val$6,"$compile_while",$BreakNode_compile_iter$5=function(){return $truthy(this.$while_loop()["$[]"]("closure"))?this.$push("return ",this.$expr_or_nil(this.$value())):this.$push("break;")},$BreakNode_compile_iter$5.$$arity=0),Opal.def($BreakNode_break_val$6,"$compile_iter",$BreakNode_compile_iter$5=function(){return $truthy(this["$stmt?"]())||this.$error("break must be used as a statement"),this.$line("Opal.brk(",this.$break_val(),", $brk)")},$BreakNode_compile_iter$5.$$arity=0),Opal.def($BreakNode_break_val$6,"$break_val",$BreakNode_break_val$6=function(){return $truthy(this.$value()["$nil?"]())?this.$expr(this.$s("nil")):this.$expr(this.$value())},$BreakNode_break_val$6.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$RedoNode_compile_iter$9,$RedoNode_compile_while$8){[$RedoNode_compile_iter$9=$klass($base,$RedoNode_compile_iter$9,"RedoNode")].concat($RedoNode_compile_while$8),$RedoNode_compile_iter$9.$handle("redo"),Opal.def($RedoNode_compile_iter$9,"$compile",$RedoNode_compile_while$8=function(){return $truthy(this["$in_while?"]())?this.$compile_while():$truthy(this.$scope()["$iter?"]())?this.$compile_iter():this.$push("REDO()")},$RedoNode_compile_while$8.$$arity=0),Opal.def($RedoNode_compile_iter$9,"$compile_while",$RedoNode_compile_while$8=function(){var $writer=["use_redo",!0];return $send(this.$while_loop(),"[]=",Opal.to_a($writer)),$rb_minus($writer.length,1),this.$push(this.$while_loop()["$[]"]("redo_var")+" = true; continue;")},$RedoNode_compile_while$8.$$arity=0),Opal.def($RedoNode_compile_iter$9,"$compile_iter",$RedoNode_compile_iter$9=function(){return this.$helper("slice"),this.$push("return "+this.$scope().$identity()+".apply(null, $slice.call(arguments))")},$RedoNode_compile_iter$9.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$SplatNode_compile$11,$SplatNode_empty_splat$ques$10){[$SplatNode_compile$11=$klass($base,$SplatNode_compile$11,"SplatNode")].concat($SplatNode_empty_splat$ques$10),$SplatNode_compile$11.$handle("splat"),$SplatNode_compile$11.$children("value"),Opal.def($SplatNode_compile$11,"$empty_splat?",$SplatNode_empty_splat$ques$10=function(){return this.$value()["$=="](this.$s("array"))},$SplatNode_empty_splat$ques$10.$$arity=0),Opal.def($SplatNode_compile$11,"$compile",$SplatNode_compile$11=function(){return $truthy(this["$empty_splat?"]())?this.$push("[]"):this.$push("Opal.to_a(",this.$recv(this.$value()),")")},$SplatNode_compile$11.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$ReturnNode_compile$16,$ReturnNode_scope_to_catch_return$15){[$ReturnNode_compile$16=$klass($base,$ReturnNode_compile$16,"ReturnNode")].concat($ReturnNode_scope_to_catch_return$15),$ReturnNode_compile$16.$handle("return"),$ReturnNode_compile$16.$children("value"),Opal.def($ReturnNode_compile$16,"$return_val",$ReturnNode_scope_to_catch_return$15=function(){var lhs,rhs;return $truthy(this.$value()["$nil?"]())?this.$expr(this.$s("nil")):$truthy((lhs=this.$children().$size(),rhs=1,"number"==typeof lhs&&"number"==typeof rhs?rhs<lhs:lhs["$>"](rhs)))?this.$expr($send(this,"s",["array"].concat(Opal.to_a(this.$children())))):this.$expr(this.$value())},$ReturnNode_scope_to_catch_return$15.$$arity=0),Opal.def($ReturnNode_compile$16,"$return_in_iter?",$ReturnNode_scope_to_catch_return$15=function(){var self=this,$ret_or_1=nil,$ret_or_2=nil,parent_def=nil;return $truthy($truthy($ret_or_1=$truthy($ret_or_2=self.$scope()["$iter?"]())?self.$scope()["$lambda?"]()["$!"]():$ret_or_2)?parent_def=self.$scope().$find_parent_def():$ret_or_1)?parent_def:nil},$ReturnNode_scope_to_catch_return$15.$$arity=0),Opal.def($ReturnNode_compile$16,"$return_expr_in_def?",$ReturnNode_scope_to_catch_return$15=function(){var self=this,$ret_or_3=nil,$ret_or_4=nil;return $truthy($truthy($ret_or_3=self["$expr?"]())?$truthy($ret_or_4=self.$scope()["$def?"]())?$ret_or_4:self.$scope()["$lambda?"]():$ret_or_3)?self.$scope():nil},$ReturnNode_scope_to_catch_return$15.$$arity=0),Opal.def($ReturnNode_compile$16,"$scope_to_catch_return",$ReturnNode_scope_to_catch_return$15=function(){var $ret_or_5;return $truthy($ret_or_5=this["$return_in_iter?"]())?$ret_or_5:this["$return_expr_in_def?"]()},$ReturnNode_scope_to_catch_return$15.$$arity=0),Opal.def($ReturnNode_compile$16,"$compile",$ReturnNode_compile$16=function(){var def_scope,$writer;return $truthy(def_scope=this.$scope_to_catch_return())?($writer=[!0],$send(def_scope,"catch_return=",Opal.to_a($writer)),$rb_minus($writer.length,1),this.$push("Opal.ret(",this.$return_val(),")")):$truthy(this["$stmt?"]())?this.$push("return ",this.$return_val()):this.$error("void value expression: cannot return as an expression")},$ReturnNode_compile$16.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$JSReturnNode_compile$17,$parent_nesting){[$JSReturnNode_compile$17=$klass($base,$JSReturnNode_compile$17,"JSReturnNode")].concat($parent_nesting),$JSReturnNode_compile$17.$handle("js_return"),$JSReturnNode_compile$17.$children("value"),Opal.def($JSReturnNode_compile$17,"$compile",$JSReturnNode_compile$17=function(){return this.$push("return "),this.$push(this.$expr(this.$value()))},$JSReturnNode_compile$17.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$JSTempNode_compile$18,$parent_nesting){[$JSTempNode_compile$18=$klass($base,$JSTempNode_compile$18,"JSTempNode")].concat($parent_nesting),$JSTempNode_compile$18.$handle("js_tmp"),$JSTempNode_compile$18.$children("value"),Opal.def($JSTempNode_compile$18,"$compile",$JSTempNode_compile$18=function(){return this.$push(this.$value().$to_s())},$JSTempNode_compile$18.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$BlockPassNode_compile$19,$parent_nesting){$BlockPassNode_compile$19=$klass($base,$BlockPassNode_compile$19,"BlockPassNode"),[$BlockPassNode_compile$19].concat($parent_nesting);return $BlockPassNode_compile$19.$handle("block_pass"),$BlockPassNode_compile$19.$children("value"),Opal.def($BlockPassNode_compile$19,"$compile",$BlockPassNode_compile$19=function(){return this.$push(this.$expr(this.$s("send",this.$value(),"to_proc",this.$s("arglist"))))},$BlockPassNode_compile$19.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/definitions"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send=Opal.send,$range=Opal.range,$truthy=Opal.truthy,$slice=Opal.slice;return Opal.add_stubs(["$require","$handle","$children","$each","$line","$expr","$type","$new_name","$===","$helper","$inspect","$[]","$to_s","$first","$old_name","$push","$error","$empty?","$stmt?","$compile_children","$simple_children?","$compile_inline_children","$>","$size","$wrap","$==","$returned_children","$+","$returns","$compiler","$s","$process","$freeze","$none?","$include?","$map","$each_with_index","$reject","$to_proc"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$UndefNode_compile$1,$parent_nesting){[$UndefNode_compile$1=$klass($base,$UndefNode_compile$1,"UndefNode")].concat($parent_nesting),$UndefNode_compile$1.$handle("undef"),$UndefNode_compile$1.$children("value"),Opal.def($UndefNode_compile$1,"$compile",$UndefNode_compile$1=function(){var $$2;return $send(this.$children(),"each",[],(($$2=function(child){var self=null==$$2.$$s?this:$$2.$$s;return null==child&&(child=nil),self.$line("Opal.udef(self, '$' + ",self.$expr(child),");")}).$$s=this,$$2.$$arity=1,$$2))},$UndefNode_compile$1.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$AliasNode_compile$3,$parent_nesting){[$AliasNode_compile$3=$klass($base,$AliasNode_compile$3,"AliasNode")].concat($parent_nesting),$AliasNode_compile$3.$handle("alias"),$AliasNode_compile$3.$children("new_name","old_name"),Opal.def($AliasNode_compile$3,"$compile",$AliasNode_compile$3=function(){var self=this,$case=nil,new_name_str=nil,old_name_str=nil;return $case=self.$new_name().$type(),"gvar"["$==="]($case)?(self.$helper("alias_gvar"),new_name_str=self.$new_name().$children().$first().$to_s()["$[]"]($range(1,-1,!1)).$inspect(),old_name_str=self.$old_name().$children().$first().$to_s()["$[]"]($range(1,-1,!1)).$inspect(),self.$push("$alias_gvar(",new_name_str,", ",old_name_str,")")):"dsym"["$==="]($case)||"sym"["$==="]($case)?(self.$helper("alias"),self.$push("$alias(self, ",self.$expr(self.$new_name()),", ",self.$expr(self.$old_name()),")")):self.$error("Opal doesn't know yet how to alias with "+self.$new_name().$type())},$AliasNode_compile$3.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$BeginNode_compile_inline_children$10,$BeginNode_simple_children$ques$8){var $nesting=[$BeginNode_compile_inline_children$10=$klass($base,$BeginNode_compile_inline_children$10,"BeginNode")].concat($BeginNode_simple_children$ques$8);$BeginNode_compile_inline_children$10.$$prototype.level=$BeginNode_compile_inline_children$10.$$prototype.returned_children=nil,$BeginNode_compile_inline_children$10.$handle("begin"),Opal.def($BeginNode_compile_inline_children$10,"$compile",$BeginNode_simple_children$ques$8=function(){var lhs,rhs;return $truthy(this.$children()["$empty?"]())?this.$push("nil"):$truthy(this["$stmt?"]())?this.$compile_children(this.$children(),this.level):$truthy(this["$simple_children?"]())?(this.$compile_inline_children(this.$children(),this.level),$truthy((lhs=this.$children().$size(),rhs=1,"number"==typeof lhs&&"number"==typeof rhs?rhs<lhs:lhs["$>"](rhs)))?this.$wrap("(",")"):nil):this.$children().$size()["$=="](1)?this.$compile_inline_children(this.$returned_children(),this.level):(this.$compile_children(this.$returned_children(),this.level),this.$wrap("(function() {","})()"))},$BeginNode_simple_children$ques$8.$$arity=0),Opal.def($BeginNode_compile_inline_children$10,"$returned_children",$BeginNode_simple_children$ques$8=function(){var $a,self=this,$b=nil,lhs=nil,rhs=nil;return self.returned_children=$truthy($b=self.returned_children)?$b:($a=[].concat(Opal.to_a(self.$children())),$b=($b=$a.length-1)<0?0:$b,lhs=$slice.call($a,0,$b),rhs=null==$a[$b]?nil:$a[$b],$truthy(rhs)?(lhs=lhs,rhs=[self.$compiler().$returns(rhs)],"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)):[self.$s("nil")])},$BeginNode_simple_children$ques$8.$$arity=0),Opal.def($BeginNode_compile_inline_children$10,"$compile_children",$BeginNode_simple_children$ques$8=function(children,level){var $$7;return $send(children,"each",[],(($$7=function(child){var self=null==$$7.$$s?this:$$7.$$s;return null==child&&(child=nil),self.$line(self.$process(child,level),";")}).$$s=this,$$7.$$arity=1,$$7))},$BeginNode_simple_children$ques$8.$$arity=2),Opal.const_set($nesting[0],"COMPLEX_CHILDREN",["while","while_post","until","until_post","js_return"].$freeze()),Opal.def($BeginNode_compile_inline_children$10,"$simple_children?",$BeginNode_simple_children$ques$8=function(){var $$9;return $send(this.$children(),"none?",[],(($$9=function(child){null==$$9.$$s||$$9.$$s;return null==child&&(child=nil),$$($nesting,"COMPLEX_CHILDREN")["$include?"](child.$type())}).$$s=this,$$9.$$arity=1,$$9))},$BeginNode_simple_children$ques$8.$$arity=0),Opal.def($BeginNode_compile_inline_children$10,"$compile_inline_children",$BeginNode_compile_inline_children$10=function(children,level){var $$11,$$12,processed_children=$send(children,"map",[],(($$11=function(child){var self=null==$$11.$$s?this:$$11.$$s;return null==child&&(child=nil),self.$process(child,level)}).$$s=this,$$11.$$arity=1,$$11));return $send($send(processed_children,"reject",[],"empty?".$to_proc()),"each_with_index",[],(($$12=function(child,idx){var self=null==$$12.$$s?this:$$12.$$s;return null==child&&(child=nil),null==idx&&(idx=nil),idx["$=="](0)||self.$push(", "),self.$push(child)}).$$s=this,$$12.$$arity=2,$$12))},$BeginNode_compile_inline_children$10.$$arity=2)}($nesting[0],$$($nesting,"ScopeNode"),$nesting),function($base,self,$parent_nesting){self=$klass($base,self,"KwBeginNode"),[self].concat($parent_nesting);return self.$handle("kwbegin")}($nesting[0],$$($nesting,"BeginNode"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/yield"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send;return Opal.add_stubs(["$require","$find_yielding_scope","$uses_block!","$block_name","$block_name=","$-","$yields_single_arg?","$children","$push","$expr","$first","$wrap","$s","$uses_splat?","$scope","$def?","$parent","$!","$==","$size","$any?","$type","$handle","$compile_call"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$BaseYieldNode_uses_splat$ques$4,$BaseYieldNode_yields_single_arg$ques$3){[$BaseYieldNode_uses_splat$ques$4=$klass($base,$BaseYieldNode_uses_splat$ques$4,"BaseYieldNode")].concat($BaseYieldNode_yields_single_arg$ques$3),Opal.def($BaseYieldNode_uses_splat$ques$4,"$compile_call",$BaseYieldNode_yields_single_arg$ques$3=function(){var block_name,rhs,yielding_scope=nil,lhs=nil;return(yielding_scope=this.$find_yielding_scope())["$uses_block!"](),$truthy(yielding_scope.$block_name())||(lhs=["$yield"],$send(yielding_scope,"block_name=",Opal.to_a(lhs)),rhs=1,"number"==typeof(lhs=lhs.length)&&"number"==typeof rhs||lhs["$-"](rhs)),block_name=yielding_scope.$block_name(),$truthy(this["$yields_single_arg?"](this.$children()))?(this.$push(this.$expr(this.$children().$first())),this.$wrap("Opal.yield1("+block_name+", ",")")):(this.$push(this.$expr($send(this,"s",["arglist"].concat(Opal.to_a(this.$children()))))),$truthy(this["$uses_splat?"](this.$children()))?this.$wrap("Opal.yieldX("+block_name+", ",")"):this.$wrap("Opal.yieldX("+block_name+", [","])"))},$BaseYieldNode_yields_single_arg$ques$3.$$arity=0),Opal.def($BaseYieldNode_uses_splat$ques$4,"$find_yielding_scope",$BaseYieldNode_yields_single_arg$ques$3=function(){for(var working=nil,$ret_or_2=nil,working=this.$scope();$truthy(working)&&!$truthy($truthy($ret_or_2=working.$block_name())?$ret_or_2:working["$def?"]());)working=working.$parent();return working},$BaseYieldNode_yields_single_arg$ques$3.$$arity=0),Opal.def($BaseYieldNode_uses_splat$ques$4,"$yields_single_arg?",$BaseYieldNode_yields_single_arg$ques$3=function(children){var $ret_or_3;return $truthy($ret_or_3=this["$uses_splat?"](children)["$!"]())?children.$size()["$=="](1):$ret_or_3},$BaseYieldNode_yields_single_arg$ques$3.$$arity=1),Opal.def($BaseYieldNode_uses_splat$ques$4,"$uses_splat?",$BaseYieldNode_uses_splat$ques$4=function(children){var $$5;return $send(children,"any?",[],(($$5=function(child){null==$$5.$$s||$$5.$$s;return null==child&&(child=nil),child.$type()["$=="]("splat")}).$$s=this,$$5.$$arity=1,$$5))},$BaseYieldNode_uses_splat$ques$4.$$arity=1)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$YieldNode_compile$6,$parent_nesting){[$YieldNode_compile$6=$klass($base,$YieldNode_compile$6,"YieldNode")].concat($parent_nesting),$YieldNode_compile$6.$handle("yield"),Opal.def($YieldNode_compile$6,"$compile",$YieldNode_compile$6=function(){return this.$compile_call()},$YieldNode_compile$6.$$arity=0)}($nesting[0],$$($nesting,"BaseYieldNode"),$nesting),function($base,$ReturnableYieldNode_compile$7,$parent_nesting){$ReturnableYieldNode_compile$7=$klass($base,$ReturnableYieldNode_compile$7,"ReturnableYieldNode"),[$ReturnableYieldNode_compile$7].concat($parent_nesting);return $ReturnableYieldNode_compile$7.$handle("returnable_yield"),Opal.def($ReturnableYieldNode_compile$7,"$compile",$ReturnableYieldNode_compile$7=function(){return this.$compile_call(),this.$wrap("return ",";")},$ReturnableYieldNode_compile$7.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"BaseYieldNode"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/rescue"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send=Opal.send,$truthy=Opal.truthy,$range=Opal.range;return Opal.add_stubs(["$require","$handle","$children","$push","$in_ensure","$line","$stmt","$body_sexp","$indent","$has_rescue_else?","$unshift","$rescue_else_code","$process","$compiler","$ensr_sexp","$wrap_in_closure?","$wrap","$returns","$begn","$ensr","$s","$recv?","$expr?","$rescue_else_sexp","$scope","$stmt?","$detect","$[]","$!=","$type","$rescue_else_sexp=","$-","$handle_rescue_else_manually?","$in_rescue","$body_code","$each_with_index","$==","$retry_id","$nil?","$body","$!","$in_ensure?","$gen_retry_id","$attr_reader","$expr","$klasses","$lvar","$updated","$in_resbody","$rescue_body","$klasses_sexp","$in_resbody?","$error","$current_rescue"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$EnsureNode_rescue_else_code$9,$EnsureNode_wrap_in_closure$ques$8){[$EnsureNode_rescue_else_code$9=$klass($base,$EnsureNode_rescue_else_code$9,"EnsureNode")].concat($EnsureNode_wrap_in_closure$ques$8),$EnsureNode_rescue_else_code$9.$handle("ensure"),$EnsureNode_rescue_else_code$9.$children("begn","ensr"),Opal.def($EnsureNode_rescue_else_code$9,"$compile",$EnsureNode_wrap_in_closure$ques$8=function(){var $$2,$$3;return this.$push("try {"),$send(this,"in_ensure",[],(($$2=function(){var self=null==$$2.$$s?this:$$2.$$s;return self.$line(self.$stmt(self.$body_sexp()))}).$$s=this,$$2.$$arity=0,$$2)),this.$line("} finally {"),$send(this,"indent",[],(($$3=function(){var $$4,self=null==$$3.$$s?this:$$3.$$s;return null==self.level&&(self.level=nil),$truthy(self["$has_rescue_else?"]())?(self.$unshift("var $no_errors = true; "),self.$line("var $rescue_else_result;"),self.$line("if ($no_errors) { "),$send(self,"indent",[],(($$4=function(){var $$5,self=null==$$4.$$s?this:$$4.$$s;return self.$line("$rescue_else_result = (function() {"),$send(self,"indent",[],(($$5=function(){var self=null==$$5.$$s?this:$$5.$$s;return self.$line(self.$stmt(self.$rescue_else_code()))}).$$s=self,$$5.$$arity=0,$$5)),self.$line("})();")}).$$s=self,$$4.$$arity=0,$$4)),self.$line("}"),self.$line(self.$compiler().$process(self.$ensr_sexp(),self.level)),self.$line("if ($no_errors) { return $rescue_else_result; }")):self.$line(self.$compiler().$process(self.$ensr_sexp(),self.level))}).$$s=this,$$3.$$arity=0,$$3)),this.$line("}"),$truthy(this["$wrap_in_closure?"]())?this.$wrap("(function() { ","; })()"):nil},$EnsureNode_wrap_in_closure$ques$8.$$arity=0),Opal.def($EnsureNode_rescue_else_code$9,"$body_sexp",$EnsureNode_wrap_in_closure$ques$8=function(){return $truthy(this["$wrap_in_closure?"]())?this.$compiler().$returns(this.$begn()):this.$begn()},$EnsureNode_wrap_in_closure$ques$8.$$arity=0),Opal.def($EnsureNode_rescue_else_code$9,"$ensr_sexp",$EnsureNode_wrap_in_closure$ques$8=function(){var $ret_or_1;return $truthy($ret_or_1=this.$ensr())?$ret_or_1:this.$s("nil")},$EnsureNode_wrap_in_closure$ques$8.$$arity=0),Opal.def($EnsureNode_rescue_else_code$9,"$wrap_in_closure?",$EnsureNode_wrap_in_closure$ques$8=function(){var $ret_or_2,self=this,$ret_or_3=nil;return $truthy($ret_or_2=$truthy($ret_or_3=self["$recv?"]())?$ret_or_3:self["$expr?"]())?$ret_or_2:self["$has_rescue_else?"]()},$EnsureNode_wrap_in_closure$ques$8.$$arity=0),Opal.def($EnsureNode_rescue_else_code$9,"$rescue_else_code",$EnsureNode_rescue_else_code$9=function(){var rescue_else_code=nil,rescue_else_code=this.$scope().$rescue_else_sexp();return $truthy(this["$stmt?"]())||(rescue_else_code=this.$compiler().$returns(rescue_else_code)),rescue_else_code},$EnsureNode_rescue_else_code$9.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,self,$RescueNode_gen_retry_id$21){[self=$klass($base,self,"RescueNode")].concat($RescueNode_gen_retry_id$21),self.$$prototype.retry_id=nil,self.$handle("rescue"),self.$children("body"),Opal.def(self,"$compile",$RescueNode_gen_retry_id$21=function(){var $$11,$$12,rhs,self=this,lhs=nil,$ret_or_6=nil,lhs=[$send(self.$children()["$[]"]($range(1,-1,!1)),"detect",[],(($$11=function(sexp){var $ret_or_4;null==$$11.$$s||$$11.$$s;return null==sexp&&(sexp=nil),$truthy($ret_or_4=sexp)?sexp.$type()["$!="]("resbody"):$ret_or_4}).$$s=self,$$11.$$arity=1,$$11))];return $send(self.$scope(),"rescue_else_sexp=",Opal.to_a(lhs)),rhs=1,"number"==typeof(lhs=lhs.length)&&"number"==typeof rhs||lhs["$-"](rhs),$truthy(self["$handle_rescue_else_manually?"]())&&self.$line("var $no_errors = true;"),$send(self,"in_rescue",[self],(($$12=function(){var $$13,$$14,$$16,self=null==$$12.$$s?this:$$12.$$s;return self.$push("try {"),$send(self,"indent",[],(($$13=function(){var self=null==$$13.$$s?this:$$13.$$s;return self.$line(self.$stmt(self.$body_code()))}).$$s=self,$$13.$$arity=0,$$13)),self.$line("} catch ($err) {"),$send(self,"indent",[],(($$14=function(){var $$15,self=null==$$14.$$s?this:$$14.$$s;return $truthy(self["$has_rescue_else?"]())&&self.$line("$no_errors = false;"),$send(self.$children()["$[]"]($range(1,-1,!1)),"each_with_index",[],(($$15=function(child,idx){var self=null==$$15.$$s?this:$$15.$$s,$ret_or_5=nil;return null==self.level&&(self.level=nil),null==child&&(child=nil),null==idx&&(idx=nil),$truthy($truthy($ret_or_5=child)?child.$type()["$=="]("resbody"):$ret_or_5)?(idx["$=="](0)||self.$push(" else "),self.$line(self.$process(child,self.level))):nil}).$$s=self,$$15.$$arity=2,$$15)),self.$push(" else { throw $err; }")}).$$s=self,$$14.$$arity=0,$$14)),self.$line("}"),$truthy(self["$handle_rescue_else_manually?"]())&&(self.$push("finally {"),$send(self,"indent",[],(($$16=function(){var $$17,self=null==$$16.$$s?this:$$16.$$s;return self.$line("if ($no_errors) { "),$send(self,"indent",[],(($$17=function(){var self=null==$$17.$$s?this:$$17.$$s;return self.$line(self.$stmt(self.$rescue_else_code()))}).$$s=self,$$17.$$arity=0,$$17)),self.$line("}")}).$$s=self,$$16.$$arity=0,$$16)),self.$push("}")),$truthy(self.$retry_id())?self.$wrap(self.$retry_id()+": do { "," break; } while(1)"):nil}).$$s=self,$$12.$$arity=0,$$12)),$truthy($truthy($ret_or_6=self["$expr?"]())?$ret_or_6:self["$recv?"]())?self.$wrap("(function() { ","})()"):nil},$RescueNode_gen_retry_id$21.$$arity=0),Opal.def(self,"$body_code",$RescueNode_gen_retry_id$21=function(){var self=this,body_code=nil,$ret_or_7=nil,body_code=$truthy($truthy($ret_or_7=self.$body()["$nil?"]())?$ret_or_7:self.$body().$type()["$=="]("resbody"))?self.$s("nil"):self.$body();return $truthy(self["$stmt?"]())||(body_code=self.$compiler().$returns(body_code)),body_code},$RescueNode_gen_retry_id$21.$$arity=0),Opal.def(self,"$rescue_else_code",$RescueNode_gen_retry_id$21=function(){var rescue_else_code=nil,rescue_else_code=this.$scope().$rescue_else_sexp();return $truthy(this["$stmt?"]())||(rescue_else_code=this.$compiler().$returns(rescue_else_code)),rescue_else_code},$RescueNode_gen_retry_id$21.$$arity=0),Opal.def(self,"$handle_rescue_else_manually?",$RescueNode_gen_retry_id$21=function(){var $ret_or_8;return $truthy($ret_or_8=this["$in_ensure?"]()["$!"]())?this["$has_rescue_else?"]():$ret_or_8},$RescueNode_gen_retry_id$21.$$arity=0),Opal.def(self,"$gen_retry_id",$RescueNode_gen_retry_id$21=function(){var self=this,$ret_or_9=nil;return self.retry_id=$truthy($ret_or_9=self.retry_id)?$ret_or_9:self.$scope().$gen_retry_id()},$RescueNode_gen_retry_id$21.$$arity=0),self.$attr_reader("retry_id")}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$ResBodyNode_rescue_body$27,$ResBodyNode_klasses$26){[$ResBodyNode_rescue_body$27=$klass($base,$ResBodyNode_rescue_body$27,"ResBodyNode")].concat($ResBodyNode_klasses$26),$ResBodyNode_rescue_body$27.$handle("resbody"),$ResBodyNode_rescue_body$27.$children("klasses_sexp","lvar","body"),Opal.def($ResBodyNode_rescue_body$27,"$compile",$ResBodyNode_klasses$26=function(){var $$23;return this.$push("if (Opal.rescue($err, ",this.$expr(this.$klasses()),")) {"),$send(this,"indent",[],(($$23=function(){var $$24,self=null==$$23.$$s?this:$$23.$$s;return $truthy(self.$lvar())&&self.$push(self.$expr(self.$lvar().$updated(nil,[].concat(Opal.to_a(self.$lvar().$children())).concat([self.$s("js_tmp","$err")])))),self.$line("try {"),$send(self,"indent",[],(($$24=function(){var $$25,self=null==$$24.$$s?this:$$24.$$s;return $send(self,"in_resbody",[],(($$25=function(){var self=null==$$25.$$s?this:$$25.$$s;return self.$line(self.$stmt(self.$rescue_body()))}).$$s=self,$$25.$$arity=0,$$25))}).$$s=self,$$24.$$arity=0,$$24)),self.$line("} finally { Opal.pop_exception(); }")}).$$s=this,$$23.$$arity=0,$$23)),this.$line("}")},$ResBodyNode_klasses$26.$$arity=0),Opal.def($ResBodyNode_rescue_body$27,"$klasses",$ResBodyNode_klasses$26=function(){var $ret_or_10;return $truthy($ret_or_10=this.$klasses_sexp())?$ret_or_10:this.$s("array",this.$s("const",nil,"StandardError"))},$ResBodyNode_klasses$26.$$arity=0),Opal.def($ResBodyNode_rescue_body$27,"$rescue_body",$ResBodyNode_rescue_body$27=function(){var self=this,body_code=nil,$ret_or_11=nil,body_code=$truthy($ret_or_11=self.$body())?$ret_or_11:self.$s("nil");return $truthy(self["$stmt?"]())||(body_code=self.$compiler().$returns(body_code)),body_code},$ResBodyNode_rescue_body$27.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$RetryNode_compile$28,$parent_nesting){$RetryNode_compile$28=$klass($base,$RetryNode_compile$28,"RetryNode"),[$RetryNode_compile$28].concat($parent_nesting);return $RetryNode_compile$28.$handle("retry"),Opal.def($RetryNode_compile$28,"$compile",$RetryNode_compile$28=function(){return $truthy(this["$in_resbody?"]())||this.$error("Invalid retry"),this.$push("continue "+this.$scope().$current_rescue().$gen_retry_id())},$RetryNode_compile$28.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/case"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send=Opal.send,$truthy=Opal.truthy,$range=Opal.range;return Opal.add_stubs(["$require","$handle","$children","$in_case","$compiler","$compile_code","$needs_closure?","$wrap","$condition","$[]=","$case_stmt","$-","$add_local","$push","$expr","$each_with_index","$case_parts","$line","$type","$===","$returns","$==","$stmt","$!","$stmt?","$[]","$when_checks","$js_truthy","$s","$process","$body_code","$last"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$CaseNode_case_stmt$7,$CaseNode_case_parts$6){[$CaseNode_case_stmt$7=$klass($base,$CaseNode_case_stmt$7,"CaseNode")].concat($CaseNode_case_parts$6),$CaseNode_case_stmt$7.$handle("case"),$CaseNode_case_stmt$7.$children("condition"),Opal.def($CaseNode_case_stmt$7,"$compile",$CaseNode_case_parts$6=function(){var $$2;return $send(this.$compiler(),"in_case",[],(($$2=function(){var self=null==$$2.$$s?this:$$2.$$s;return self.$compile_code(),$truthy(self["$needs_closure?"]())?self.$wrap("(function() {","})()"):nil}).$$s=this,$$2.$$arity=0,$$2))},$CaseNode_case_parts$6.$$arity=0),Opal.def($CaseNode_case_stmt$7,"$compile_code",$CaseNode_case_parts$6=function(){var $$4,rhs,self=this,handled_else=nil,lhs=nil,$ret_or_1=nil,handled_else=!1;return $truthy(self.$condition())&&(lhs=["cond",!0],$send(self.$case_stmt(),"[]=",Opal.to_a(lhs)),rhs=1,"number"==typeof(lhs=lhs.length)&&"number"==typeof rhs||lhs["$-"](rhs),self.$add_local("$case"),self.$push("$case = ",self.$expr(self.$condition()),";")),$send(self.$case_parts(),"each_with_index",[],(($$4=function(wen,idx){var self=null==$$4.$$s?this:$$4.$$s,$case=nil;return null==wen&&(wen=nil),null==idx&&(idx=nil),$truthy(wen)?(self.$line(),$case=wen.$type(),"when"["$==="]($case)?($truthy(self["$needs_closure?"]())&&(wen=self.$compiler().$returns(wen)),idx["$=="](0)||self.$push("else "),self.$push(self.$stmt(wen))):(handled_else=!0,$truthy(self["$needs_closure?"]())&&(wen=self.$compiler().$returns(wen)),self.$push("else {",self.$stmt(wen),"}"))):nil}).$$s=self,$$4.$$arity=2,$$4)),$truthy($truthy($ret_or_1=self["$needs_closure?"]())?handled_else["$!"]():$ret_or_1)?(self.$line(),self.$push("else { return nil }")):nil},$CaseNode_case_parts$6.$$arity=0),Opal.def($CaseNode_case_stmt$7,"$needs_closure?",$CaseNode_case_parts$6=function(){return this["$stmt?"]()["$!"]()},$CaseNode_case_parts$6.$$arity=0),Opal.def($CaseNode_case_stmt$7,"$case_parts",$CaseNode_case_parts$6=function(){return this.$children()["$[]"]($range(1,-1,!1))},$CaseNode_case_parts$6.$$arity=0),Opal.def($CaseNode_case_stmt$7,"$case_stmt",$CaseNode_case_stmt$7=function(){return this.$compiler().$case_stmt()},$CaseNode_case_stmt$7.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$WhenNode_body_code$12,$WhenNode_case_stmt$11){$WhenNode_body_code$12=$klass($base,$WhenNode_body_code$12,"WhenNode"),[$WhenNode_body_code$12].concat($WhenNode_case_stmt$11);return $WhenNode_body_code$12.$$prototype.level=nil,$WhenNode_body_code$12.$handle("when"),$WhenNode_body_code$12.$children("whens","body"),Opal.def($WhenNode_body_code$12,"$compile",$WhenNode_case_stmt$11=function(){var $$9;return this.$push("if ("),$send(this.$when_checks(),"each_with_index",[],(($$9=function(check,idx){var call,self=null==$$9.$$s?this:$$9.$$s;return null==check&&(check=nil),null==idx&&(idx=nil),idx["$=="](0)||self.$push(" || "),check.$type()["$=="]("splat")?(self.$push("(function($splt) { for (var i = 0, ii = $splt.length; i < ii; i++) {"),$truthy(self.$case_stmt()["$[]"]("cond"))?self.$push("if ($splt[i]['$===']($case)) { return true; }"):self.$push("if (",self.$js_truthy(check),")) { return true; }"),self.$push("} return false; })(",self.$expr(check.$children()["$[]"](0)),")")):$truthy(self.$case_stmt()["$[]"]("cond"))?(call=self.$s("send",check,"===",self.$s("arglist",self.$s("js_tmp","$case"))),self.$push(self.$expr(call))):self.$push(self.$js_truthy(check))}).$$s=this,$$9.$$arity=2,$$9)),this.$push(") {",this.$process(this.$body_code(),this.level),"}")},$WhenNode_case_stmt$11.$$arity=0),Opal.def($WhenNode_body_code$12,"$when_checks",$WhenNode_case_stmt$11=function(){return this.$children()["$[]"]($range(0,-2,!1))},$WhenNode_case_stmt$11.$$arity=0),Opal.def($WhenNode_body_code$12,"$case_stmt",$WhenNode_case_stmt$11=function(){return this.$compiler().$case_stmt()},$WhenNode_case_stmt$11.$$arity=0),Opal.def($WhenNode_body_code$12,"$body_code",$WhenNode_body_code$12=function(){var $ret_or_2;return $truthy($ret_or_2=this.$children().$last())?$ret_or_2:this.$s("nil")},$WhenNode_body_code$12.$$arity=0),nil&&"body_code"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/super"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$slice=Opal.slice,$truthy=Opal.truthy,$send=Opal.send;return Opal.add_stubs(["$require","$include?","$type","$s","$helper","$push","$compile_receiver","$compile_method_body","$compile_method_name","$compile_arguments","$compile_block_pass","$private","$def?","$scope","$find_parent_def","$to_s","$mid","$def_scope","$identify!","$method_id","$def_scope_identity","$defined_check_param","$allow_stubs","$super_chain","$join","$map","$implicit_arguments_param","$super_method_invocation","$iter?","$super_block_invocation","$raise","$handle","$wrap","$uses_block!","$compile_using_send","$==","$iter","$uses_zuper=","$-","$block_name","$!","$<<","$empty?","$children","$arglist","$expr","$==="]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$BaseSuperNode_compile_method_name$13,$BaseSuperNode_compile_method_body$12){var $BaseSuperNode_initialize$1;[$BaseSuperNode_compile_method_name$13=$klass($base,$BaseSuperNode_compile_method_name$13,"BaseSuperNode")].concat($BaseSuperNode_compile_method_body$12),$BaseSuperNode_compile_method_name$13.$$prototype.sexp=$BaseSuperNode_compile_method_name$13.$$prototype.def_scope=nil,Opal.def($BaseSuperNode_compile_method_name$13,"$initialize",$BaseSuperNode_initialize$1=function($a){var $b,rest,$zuper_ii,$c=$BaseSuperNode_initialize$1.$$p,args=nil,last_child=nil,$ret_or_1=nil,$zuper=nil,$zuper_i=nil;for($c&&($BaseSuperNode_initialize$1.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return Opal.slice.call(arguments,0,arguments.length),$send2(this,$find_super(this,"initialize",$BaseSuperNode_initialize$1,!1,!0),"initialize",$zuper,$c),args=[].concat(Opal.to_a(this.sexp)),$c=($c=($b=[].concat(Opal.to_a(args))).length-1)<0?0:$c,rest=$slice.call($b,0,$c),last_child=null==$b[$c]?nil:$b[$c],$truthy($truthy($ret_or_1=last_child)?["iter","block_pass"]["$include?"](last_child.$type()):$ret_or_1)?(this.iter=last_child,args=rest):this.iter=this.$s("js_tmp","null"),this.arglist=$send(this,"s",["arglist"].concat(Opal.to_a(args))),this.recvr=this.$s("self")},$BaseSuperNode_initialize$1.$$arity=-1),Opal.def($BaseSuperNode_compile_method_name$13,"$compile_using_send",$BaseSuperNode_compile_method_body$12=function(){return this.$helper("send2"),this.$push("$send2("),this.$compile_receiver(),this.$compile_method_body(),this.$compile_method_name(),this.$compile_arguments(),this.$compile_block_pass(),this.$push(")")},$BaseSuperNode_compile_method_body$12.$$arity=0),$BaseSuperNode_compile_method_name$13.$private(),Opal.def($BaseSuperNode_compile_method_name$13,"$def_scope",$BaseSuperNode_compile_method_body$12=function(){var self=this,$ret_or_2=nil;return self.def_scope=$truthy($ret_or_2=self.def_scope)?$ret_or_2:$truthy(self.$scope()["$def?"]())?self.$scope():self.$scope().$find_parent_def()},$BaseSuperNode_compile_method_body$12.$$arity=0),Opal.def($BaseSuperNode_compile_method_name$13,"$defined_check_param",$BaseSuperNode_compile_method_body$12=function(){return"false"},$BaseSuperNode_compile_method_body$12.$$arity=0),Opal.def($BaseSuperNode_compile_method_name$13,"$implicit_arguments_param",$BaseSuperNode_compile_method_body$12=function(){return"false"},$BaseSuperNode_compile_method_body$12.$$arity=0),Opal.def($BaseSuperNode_compile_method_name$13,"$method_id",$BaseSuperNode_compile_method_body$12=function(){return this.$def_scope().$mid().$to_s()},$BaseSuperNode_compile_method_body$12.$$arity=0),Opal.def($BaseSuperNode_compile_method_name$13,"$def_scope_identity",$BaseSuperNode_compile_method_body$12=function(){return this.$def_scope()["$identify!"](this.$def_scope().$mid())},$BaseSuperNode_compile_method_body$12.$$arity=0),Opal.def($BaseSuperNode_compile_method_name$13,"$allow_stubs",$BaseSuperNode_compile_method_body$12=function(){return"true"},$BaseSuperNode_compile_method_body$12.$$arity=0),Opal.def($BaseSuperNode_compile_method_name$13,"$super_method_invocation",$BaseSuperNode_compile_method_body$12=function(){return this.$helper("find_super"),"$find_super(self, '"+this.$method_id()+"', "+this.$def_scope_identity()+", "+this.$defined_check_param()+", "+this.$allow_stubs()+")"},$BaseSuperNode_compile_method_body$12.$$arity=0),Opal.def($BaseSuperNode_compile_method_name$13,"$super_block_invocation",$BaseSuperNode_compile_method_body$12=function(){var $a,$$11,chain,cur_defn;return this.$helper("find_block_super"),$a=this.$scope().$super_chain(),chain=null==($a=Opal.to_ary($a))[0]?nil:$a[0],cur_defn=null==$a[1]?nil:$a[1],"$find_block_super(self, "+(null==$a[2]?nil:$a[2])+", ("+$send(chain,"map",[],(($$11=function(c){null==$$11.$$s||$$11.$$s;return null==c&&(c=nil),c+".$$def"}).$$s=this,$$11.$$arity=1,$$11)).$join(" || ")+" || "+cur_defn+"), "+this.$defined_check_param()+", "+this.$implicit_arguments_param()+")"},$BaseSuperNode_compile_method_body$12.$$arity=0),Opal.def($BaseSuperNode_compile_method_name$13,"$compile_method_body",$BaseSuperNode_compile_method_body$12=function(){return this.$push(", "),$truthy(this.$scope()["$def?"]())?this.$push(this.$super_method_invocation()):$truthy(this.$scope()["$iter?"]())?this.$push(this.$super_block_invocation()):this.$raise("super must be called from method body or block")},$BaseSuperNode_compile_method_body$12.$$arity=0),Opal.def($BaseSuperNode_compile_method_name$13,"$compile_method_name",$BaseSuperNode_compile_method_name$13=function(){var $a,mid;return $truthy(this.$scope()["$def?"]())?this.$push(", '"+this.$method_id()+"'"):$truthy(this.$scope()["$iter?"]())?($a=this.$scope().$super_chain(),null==($a=Opal.to_ary($a))[0]||$a[0],null==$a[1]||$a[1],mid=null==$a[2]?nil:$a[2],this.$push(", "+mid)):nil},$BaseSuperNode_compile_method_name$13.$$arity=0)}($nesting[0],$$($nesting,"CallNode"),$nesting),function($base,$DefinedSuperNode_compile$16,$DefinedSuperNode_defined_check_param$15){[$DefinedSuperNode_compile$16=$klass($base,$DefinedSuperNode_compile$16,"DefinedSuperNode")].concat($DefinedSuperNode_defined_check_param$15),$DefinedSuperNode_compile$16.$handle("defined_super"),Opal.def($DefinedSuperNode_compile$16,"$allow_stubs",$DefinedSuperNode_defined_check_param$15=function(){return"false"},$DefinedSuperNode_defined_check_param$15.$$arity=0),Opal.def($DefinedSuperNode_compile$16,"$defined_check_param",$DefinedSuperNode_defined_check_param$15=function(){return"true"},$DefinedSuperNode_defined_check_param$15.$$arity=0),Opal.def($DefinedSuperNode_compile$16,"$compile",$DefinedSuperNode_compile$16=function(){return this.$compile_receiver(),this.$compile_method_body(),this.$wrap("((",') != null ? "super" : nil)')},$DefinedSuperNode_compile$16.$$arity=0)}($nesting[0],$$($nesting,"BaseSuperNode"),$nesting),function($base,$SuperNode_compile$18,$parent_nesting){var $SuperNode_initialize$17;[$SuperNode_compile$18=$klass($base,$SuperNode_compile$18,"SuperNode")].concat($parent_nesting),$SuperNode_compile$18.$handle("super"),Opal.def($SuperNode_compile$18,"$initialize",$SuperNode_initialize$17=function($a){var $zuper_ii,$iter=$SuperNode_initialize$17.$$p,$zuper=nil,$zuper_i=nil;for($iter&&($SuperNode_initialize$17.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return Opal.slice.call(arguments,0,arguments.length),$send2(this,$find_super(this,"initialize",$SuperNode_initialize$17,!1,!0),"initialize",$zuper,$iter),$truthy(this.$scope()["$def?"]())?this.$scope()["$uses_block!"]():nil},$SuperNode_initialize$17.$$arity=-1),Opal.def($SuperNode_compile$18,"$compile",$SuperNode_compile$18=function(){return this.$compile_using_send()},$SuperNode_compile$18.$$arity=0)}($nesting[0],$$($nesting,"BaseSuperNode"),$nesting),function($base,$ZsuperNode_block_name$23,$ZsuperNode_compile_arguments$22){var $ZsuperNode_initialize$20,$ZsuperNode_block_name$23=$klass($base,$ZsuperNode_block_name$23,"ZsuperNode"),$nesting=[$ZsuperNode_block_name$23].concat($ZsuperNode_compile_arguments$22);return $ZsuperNode_block_name$23.$handle("zsuper"),Opal.def($ZsuperNode_block_name$23,"$implicit_arguments_param",$ZsuperNode_compile_arguments$22=function(){return"true"},$ZsuperNode_compile_arguments$22.$$arity=0),Opal.def($ZsuperNode_block_name$23,"$initialize",$ZsuperNode_initialize$20=function($a){var $zuper_ii,$iter=$ZsuperNode_initialize$20.$$p,$zuper=nil,$zuper_i=nil;for($iter&&($ZsuperNode_initialize$20.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return Opal.slice.call(arguments,0,arguments.length),$send2(this,$find_super(this,"initialize",$ZsuperNode_initialize$20,!1,!0),"initialize",$zuper,$iter),this.$iter().$type()["$=="]("iter")?nil:(this.$scope()["$uses_block!"](),this.iter=this.$s("js_tmp","$iter"))},$ZsuperNode_initialize$20.$$arity=-1),Opal.def($ZsuperNode_block_name$23,"$compile",$ZsuperNode_compile_arguments$22=function(){var block_pass,rhs,self=this,lhs=nil,implicit_args=nil,$ret_or_3=nil;return $truthy(self.$def_scope())&&(lhs=[!0],$send(self.$def_scope(),"uses_zuper=",Opal.to_a(lhs)),rhs=1,"number"==typeof(lhs=lhs.length)&&"number"==typeof rhs||lhs["$-"](rhs),implicit_args=[self.$s("js_tmp","$zuper")],$truthy($truthy($ret_or_3=self.$block_name())?self.$iter()["$!"]():$ret_or_3)&&(block_pass=self.$s("block_pass",self.$s("lvar",self.$block_name())),implicit_args["$<<"](block_pass)),self.arglist=$send(self,"s",["arglist"].concat(Opal.to_a(implicit_args)))),self.$compile_using_send()},$ZsuperNode_compile_arguments$22.$$arity=0),Opal.def($ZsuperNode_block_name$23,"$compile_arguments",$ZsuperNode_compile_arguments$22=function(){return this.$push(", "),$truthy(this.$arglist().$children()["$empty?"]())?this.$push("[]"):this.$push(this.$expr(this.$arglist()))},$ZsuperNode_compile_arguments$22.$$arity=0),Opal.def($ZsuperNode_block_name$23,"$block_name",$ZsuperNode_block_name$23=function(){var self=this,$case=nil;return $case=self.$def_scope(),$$$($$$($$($nesting,"Opal"),"Nodes"),"IterNode")["$==="]($case)||$$$($$$($$($nesting,"Opal"),"Nodes"),"DefNode")["$==="]($case)?self.$def_scope().$block_name():self.$raise("Don't know what to do with super in the scope "+self.$def_scope())},$ZsuperNode_block_name$23.$$arity=0),nil&&"block_name"}($nesting[0],$$($nesting,"SuperNode"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/version"]=function(Opal){Opal.top;var $nesting=[],$module=(Opal.nil,Opal.$$$,Opal.$$,Opal.module);return function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return Opal.const_set($nesting[0],"VERSION","1.3.0.dev")}($nesting[0],$nesting)},Opal.modules["opal/nodes/top"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$send=Opal.send,$truthy=Opal.truthy;return Opal.add_stubs(["$require","$handle","$children","$push","$version_comment","$opening","$in_scope","$use_strict?","$compiler","$line","$stmt","$stmts","$is_a?","$eval?","$add_temp","$add_used_helpers","$add_used_operators","$to_vars","$scope","$compile_method_stubs","$compile_irb_vars","$compile_end_construct","$closing","$requirable?","$inspect","$module_name","$file","$esm?","$returns","$body","$irb?","$each","$to_a","$helpers","$operator_helpers","$[]","$method_missing?","$method_calls","$join","$map","$empty?","$eof_content"]),self.$require("pathname"),self.$require("opal/version"),self.$require("opal/nodes/scope"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$TopNode_version_comment$14,$TopNode_compile_end_construct$13){var $TopNode_version_comment$14=$klass($base,$TopNode_version_comment$14,"TopNode"),$nesting=[$TopNode_version_comment$14].concat($TopNode_compile_end_construct$13);return $TopNode_version_comment$14.$handle("top"),$TopNode_version_comment$14.$children("body"),Opal.def($TopNode_version_comment$14,"$compile",$TopNode_compile_end_construct$13=function(){var $$2;return this.$push(this.$version_comment()),this.$opening(),$send(this,"in_scope",[],(($$2=function(){var self=null==$$2.$$s?this:$$2.$$s,body_code=nil;return $truthy(self.$compiler()["$use_strict?"]())&&self.$line('"use strict";'),body_code=self.$stmt(self.$stmts()),$truthy(body_code["$is_a?"]($$($nesting,"Array")))||(body_code=[body_code]),$truthy(self.$compiler()["$eval?"]())?self.$add_temp("$nesting = self.$$is_a_module ? [self] : [self.$$class]"):(self.$add_temp("self = Opal.top"),self.$add_temp("$nesting = []")),self.$add_temp("nil = Opal.nil"),self.$add_temp("$$$ = Opal.$$$"),self.$add_temp("$$ = Opal.$$"),self.$add_used_helpers(),self.$add_used_operators(),self.$line(self.$scope().$to_vars()),self.$compile_method_stubs(),self.$compile_irb_vars(),self.$compile_end_construct(),self.$line(body_code)}).$$s=this,$$2.$$arity=0,$$2)),this.$closing()},$TopNode_compile_end_construct$13.$$arity=0),Opal.def($TopNode_version_comment$14,"$opening",$TopNode_compile_end_construct$13=function(){return $truthy(this.$compiler()["$requirable?"]())?this.$line("Opal.modules["+$$$($$($nesting,"Opal"),"Compiler").$module_name(this.$compiler().$file()).$inspect()+"] = function(Opal) {"):$truthy(this.$compiler()["$eval?"]())?this.$line("(function(Opal, self) {"):$truthy(this.$compiler()["$esm?"]())?this.$line("export default (function(Opal) {"):this.$line("(function(Opal) {")},$TopNode_compile_end_construct$13.$$arity=0),Opal.def($TopNode_version_comment$14,"$closing",$TopNode_compile_end_construct$13=function(){return $truthy(this.$compiler()["$requirable?"]())?this.$line("};\n"):$truthy(this.$compiler()["$eval?"]())?this.$line("})(Opal, self)"):this.$line("})(Opal);\n")},$TopNode_compile_end_construct$13.$$arity=0),Opal.def($TopNode_version_comment$14,"$stmts",$TopNode_compile_end_construct$13=function(){return this.$compiler().$returns(this.$body())},$TopNode_compile_end_construct$13.$$arity=0),Opal.def($TopNode_version_comment$14,"$compile_irb_vars",$TopNode_compile_end_construct$13=function(){return $truthy(this.$compiler()["$irb?"]())?this.$line("if (!Opal.irb_vars) { Opal.irb_vars = {}; }"):nil},$TopNode_compile_end_construct$13.$$arity=0),Opal.def($TopNode_version_comment$14,"$add_used_helpers",$TopNode_compile_end_construct$13=function(){var $$8;return $send(this.$compiler().$helpers().$to_a(),"each",[],(($$8=function(h){var self=null==$$8.$$s?this:$$8.$$s;return null==h&&(h=nil),self.$add_temp("$"+h+" = Opal."+h)}).$$s=this,$$8.$$arity=1,$$8))},$TopNode_compile_end_construct$13.$$arity=0),Opal.def($TopNode_version_comment$14,"$add_used_operators",$TopNode_compile_end_construct$13=function(){var $$10,operators=this.$compiler().$operator_helpers().$to_a();return $send(operators,"each",[],(($$10=function(op){var name,self=null==$$10.$$s?this:$$10.$$s;return null==op&&(op=nil),name=$$$($$$($$($nesting,"Nodes"),"CallNode"),"OPERATORS")["$[]"](op),self.$line("function $rb_"+name+"(lhs, rhs) {"),self.$line("  return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs "+op+" rhs : lhs['$"+op+"'](rhs);"),self.$line("}")}).$$s=this,$$10.$$arity=1,$$10))},$TopNode_compile_end_construct$13.$$arity=0),Opal.def($TopNode_version_comment$14,"$compile_method_stubs",$TopNode_compile_end_construct$13=function(){var $$12,calls=nil,stubs=nil;return $truthy(this.$compiler()["$method_missing?"]())?(calls=this.$compiler().$method_calls(),stubs=$send(calls.$to_a(),"map",[],(($$12=function(k){null==$$12.$$s||$$12.$$s;return null==k&&(k=nil),"'$"+k+"'"}).$$s=this,$$12.$$arity=1,$$12)).$join(", "),$truthy(stubs["$empty?"]())?nil:this.$line("Opal.add_stubs(["+stubs+"]);")):nil},$TopNode_compile_end_construct$13.$$arity=0),Opal.def($TopNode_version_comment$14,"$compile_end_construct",$TopNode_compile_end_construct$13=function(){var content=nil;return $truthy(content=this.$compiler().$eof_content())?(this.$line("var $__END__ = Opal.Object.$new();"),this.$line("$__END__.$read = function() { return "+content.$inspect()+"; };")):nil},$TopNode_compile_end_construct$13.$$arity=0),Opal.def($TopNode_version_comment$14,"$version_comment",$TopNode_version_comment$14=function(){return"/* Generated by Opal "+$$$($$($nesting,"Opal"),"VERSION")+" */"},$TopNode_version_comment$14.$$arity=0),nil&&"version_comment"}($nesting[0],$$($nesting,"ScopeNode"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/while"]=function(Opal){function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send=Opal.send,$truthy=Opal.truthy;return Opal.add_stubs(["$require","$handle","$children","$js_truthy","$test","$with_temp","$in_while","$compiler","$wrap_in_closure?","$[]=","$while_loop","$-","$indent","$stmt","$body","$uses_redo?","$compile_with_redo","$compile_without_redo","$wrap","$private","$push","$compile_while","$while_open","$while_close","$line","$[]","$expr?","$recv?"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$WhileNode_wrap_in_closure$ques$12,$WhileNode_uses_redo$ques$11){[$WhileNode_wrap_in_closure$ques$12=$klass($base,$WhileNode_wrap_in_closure$ques$12,"WhileNode")].concat($WhileNode_uses_redo$ques$11),$WhileNode_wrap_in_closure$ques$12.$handle("while"),$WhileNode_wrap_in_closure$ques$12.$children("test","body"),Opal.def($WhileNode_wrap_in_closure$ques$12,"$compile",$WhileNode_uses_redo$ques$11=function(){var $$2,test_code=this.$js_truthy(this.$test());return $send(this,"with_temp",[],(($$2=function(redo_var){var $$3,self=null==$$2.$$s?this:$$2.$$s;return null==redo_var&&(redo_var=nil),$send(self.$compiler(),"in_while",[],(($$3=function(){var $$4,body_code,self=null==$$3.$$s?this:$$3.$$s,$writer=nil;return $truthy(self["$wrap_in_closure?"]())&&($writer=["closure",!0],$send(self.$while_loop(),"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]),$writer=["redo_var",redo_var],$send(self.$while_loop(),"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)],body_code=$send(self,"indent",[],(($$4=function(){var self=null==$$4.$$s?this:$$4.$$s;return self.$stmt(self.$body())}).$$s=self,$$4.$$arity=0,$$4)),$truthy(self["$uses_redo?"]())?self.$compile_with_redo(test_code,body_code,redo_var):self.$compile_without_redo(test_code,body_code)}).$$s=self,$$3.$$arity=0,$$3))}).$$s=this,$$2.$$arity=1,$$2)),$truthy(this["$wrap_in_closure?"]())?this.$wrap("(function() {","; return nil; })()"):nil},$WhileNode_uses_redo$ques$11.$$arity=0),$WhileNode_wrap_in_closure$ques$12.$private(),Opal.def($WhileNode_wrap_in_closure$ques$12,"$compile_with_redo",$WhileNode_uses_redo$ques$11=function(test_code,body_code,redo_var){return this.$push(redo_var+" = false; "),this.$compile_while([redo_var," || ",test_code],[redo_var+" = false;",body_code])},$WhileNode_uses_redo$ques$11.$$arity=3),Opal.def($WhileNode_wrap_in_closure$ques$12,"$compile_without_redo",$WhileNode_uses_redo$ques$11=function(test_code,body_code){return this.$compile_while([test_code],[body_code])},$WhileNode_uses_redo$ques$11.$$arity=2),Opal.def($WhileNode_wrap_in_closure$ques$12,"$compile_while",$WhileNode_uses_redo$ques$11=function(test_code,body_code){var $$8;return $send(this,"push",[this.$while_open()].concat(Opal.to_a(test_code)).concat([this.$while_close()])),$send(this,"indent",[],(($$8=function(){var self=null==$$8.$$s?this:$$8.$$s;return $send(self,"line",Opal.to_a(body_code))}).$$s=this,$$8.$$arity=0,$$8)),this.$line("}")},$WhileNode_uses_redo$ques$11.$$arity=2),Opal.def($WhileNode_wrap_in_closure$ques$12,"$while_open",$WhileNode_uses_redo$ques$11=function(){return"while ("},$WhileNode_uses_redo$ques$11.$$arity=0),Opal.def($WhileNode_wrap_in_closure$ques$12,"$while_close",$WhileNode_uses_redo$ques$11=function(){return") {"},$WhileNode_uses_redo$ques$11.$$arity=0),Opal.def($WhileNode_wrap_in_closure$ques$12,"$uses_redo?",$WhileNode_uses_redo$ques$11=function(){return this.$while_loop()["$[]"]("use_redo")},$WhileNode_uses_redo$ques$11.$$arity=0),Opal.def($WhileNode_wrap_in_closure$ques$12,"$wrap_in_closure?",$WhileNode_wrap_in_closure$ques$12=function(){var $ret_or_1;return $truthy($ret_or_1=this["$expr?"]())?$ret_or_1:this["$recv?"]()},$WhileNode_wrap_in_closure$ques$12.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$UntilNode_while_close$14,$UntilNode_while_open$13){[$UntilNode_while_close$14=$klass($base,$UntilNode_while_close$14,"UntilNode")].concat($UntilNode_while_open$13),$UntilNode_while_close$14.$handle("until"),$UntilNode_while_close$14.$private(),Opal.def($UntilNode_while_close$14,"$while_open",$UntilNode_while_open$13=function(){return"while (!("},$UntilNode_while_open$13.$$arity=0),Opal.def($UntilNode_while_close$14,"$while_close",$UntilNode_while_close$14=function(){return")) {"},$UntilNode_while_close$14.$$arity=0)}($nesting[0],$$($nesting,"WhileNode"),$nesting),function($base,$WhilePostNode_while_close$17,$WhilePostNode_compile_while$15){[$WhilePostNode_while_close$17=$klass($base,$WhilePostNode_while_close$17,"WhilePostNode")].concat($WhilePostNode_compile_while$15),$WhilePostNode_while_close$17.$handle("while_post"),$WhilePostNode_while_close$17.$private(),Opal.def($WhilePostNode_while_close$17,"$compile_while",$WhilePostNode_compile_while$15=function(test_code,body_code){var $$16;return this.$push("do {"),$send(this,"indent",[],(($$16=function(){var self=null==$$16.$$s?this:$$16.$$s;return $send(self,"line",Opal.to_a(body_code))}).$$s=this,$$16.$$arity=0,$$16)),$send(this,"line",["} ",this.$while_open()].concat(Opal.to_a(test_code)).concat([this.$while_close()]))},$WhilePostNode_compile_while$15.$$arity=2),Opal.def($WhilePostNode_while_close$17,"$while_close",$WhilePostNode_while_close$17=function(){return");"},$WhilePostNode_while_close$17.$$arity=0)}($nesting[0],$$($nesting,"WhileNode"),$nesting),function($base,$UntilPostNode_while_close$19,$UntilPostNode_while_open$18){$UntilPostNode_while_close$19=$klass($base,$UntilPostNode_while_close$19,"UntilPostNode"),[$UntilPostNode_while_close$19].concat($UntilPostNode_while_open$18);return $UntilPostNode_while_close$19.$handle("until_post"),$UntilPostNode_while_close$19.$private(),Opal.def($UntilPostNode_while_close$19,"$while_open",$UntilPostNode_while_open$18=function(){return"while(!("},$UntilPostNode_while_open$18.$$arity=0),Opal.def($UntilPostNode_while_close$19,"$while_close",$UntilPostNode_while_close$19=function(){return"));"},$UntilPostNode_while_close$19.$$arity=0),nil&&"while_close"}($nesting[0],$$($nesting,"WhilePostNode"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/hash"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$send=Opal.send,$truthy=Opal.truthy,$hash2=Opal.hash2;return Opal.add_stubs(["$require","$handle","$attr_accessor","$each","$children","$type","$===","$<<","$[]","$all?","$keys","$include?","$has_kwsplat","$compile_merge","$simple_keys?","$compile_hash2","$compile_hash","$helper","$==","$empty?","$expr","$s","$each_with_index","$push","$wrap","$times","$size","$inspect","$to_s","$values","$[]=","$-","$join","$value"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$HashNode_compile_hash2$11,$HashNode_compile_hash$9){var $HashNode_initialize$1;[$HashNode_compile_hash2$11=$klass($base,$HashNode_compile_hash2$11,"HashNode")].concat($HashNode_compile_hash$9),$HashNode_compile_hash2$11.$handle("hash"),$HashNode_compile_hash2$11.$attr_accessor("has_kwsplat","keys","values"),Opal.def($HashNode_compile_hash2$11,"$initialize",$HashNode_initialize$1=function($a){var $$2,$zuper_ii,$iter=$HashNode_initialize$1.$$p,$zuper=nil,$zuper_i=nil;for($iter&&($HashNode_initialize$1.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return Opal.slice.call(arguments,0,arguments.length),$send2(this,$find_super(this,"initialize",$HashNode_initialize$1,!1,!0),"initialize",$zuper,$iter),this.has_kwsplat=!1,this.keys=[],this.values=[],$send(this.$children(),"each",[],(($$2=function(child){var self=null==$$2.$$s?this:$$2.$$s,$case=nil;return null==self.keys&&(self.keys=nil),null==self.values&&(self.values=nil),null==child&&(child=nil),$case=child.$type(),"kwsplat"["$==="]($case)?self.has_kwsplat=!0:"pair"["$==="]($case)?(self.keys["$<<"](child.$children()["$[]"](0)),self.values["$<<"](child.$children()["$[]"](1))):nil}).$$s=this,$$2.$$arity=1,$$2))},$HashNode_initialize$1.$$arity=-1),Opal.def($HashNode_compile_hash2$11,"$simple_keys?",$HashNode_compile_hash$9=function(){var $$4;return $send(this.$keys(),"all?",[],(($$4=function(key){null==$$4.$$s||$$4.$$s;return null==key&&(key=nil),["sym","str"]["$include?"](key.$type())}).$$s=this,$$4.$$arity=1,$$4))},$HashNode_compile_hash$9.$$arity=0),Opal.def($HashNode_compile_hash2$11,"$compile",$HashNode_compile_hash$9=function(){return $truthy(this.$has_kwsplat())?this.$compile_merge():$truthy(this["$simple_keys?"]())?this.$compile_hash2():this.$compile_hash()},$HashNode_compile_hash$9.$$arity=0),Opal.def($HashNode_compile_hash2$11,"$compile_merge",$HashNode_compile_hash$9=function(){var $a,$$7,$$8,result=nil,seq=nil;return this.$helper("hash"),result=($a=[[],[]])[0],seq=$a[1],$send(this.$children(),"each",[],(($$7=function(child){var self=null==$$7.$$s?this:$$7.$$s;return null==child&&(child=nil),child.$type()["$=="]("kwsplat")?($truthy(seq["$empty?"]())||result["$<<"](self.$expr($send(self,"s",["hash"].concat(Opal.to_a(seq))))),result["$<<"](self.$expr(child)),seq=[]):seq["$<<"](child)}).$$s=this,$$7.$$arity=1,$$7)),$truthy(seq["$empty?"]())||result["$<<"](this.$expr($send(this,"s",["hash"].concat(Opal.to_a(seq))))),$send(result,"each_with_index",[],(($$8=function(fragment,idx){var self=null==$$8.$$s?this:$$8.$$s;return null==fragment&&(fragment=nil),null==idx&&(idx=nil),idx["$=="](0)?self.$push(fragment):self.$push(".$merge(",fragment,")")}).$$s=this,$$8.$$arity=2,$$8))},$HashNode_compile_hash$9.$$arity=0),Opal.def($HashNode_compile_hash2$11,"$compile_hash",$HashNode_compile_hash$9=function(){var $$10;return this.$helper("hash"),$send(this.$children(),"each_with_index",[],(($$10=function($a,idx){var key,value,self=null==$$10.$$s?this:$$10.$$s;return null==$a&&($a=nil),null==idx&&(idx=nil),$a=$a.$children(),key=null==($a=Opal.to_ary($a))[0]?nil:$a[0],value=null==$a[1]?nil:$a[1],idx["$=="](0)||self.$push(", "),self.$push(self.$expr(key),", ",self.$expr(value))}).$$s=this,$$10.$$arity=2,$$10)),this.$wrap("$hash(",")")},$HashNode_compile_hash$9.$$arity=0),Opal.def($HashNode_compile_hash2$11,"$compile_hash2",$HashNode_compile_hash2$11=function(){var $$12,$$13,hash_obj=nil,hash_keys=nil,$a=[$hash2([],{}),[]],hash_obj=$a[0],hash_keys=$a[1];return this.$helper("hash2"),$send(this.$keys().$size(),"times",[],(($$12=function(rhs){var key,self=null==$$12.$$s?this:$$12.$$s,lhs=nil;return null==rhs&&(rhs=nil),key=self.$keys()["$[]"](rhs).$children()["$[]"](0).$to_s().$inspect(),$truthy(hash_obj["$include?"](key))||hash_keys["$<<"](key),lhs=[key,self.$expr(self.$values()["$[]"](rhs))],$send(hash_obj,"[]=",Opal.to_a(lhs)),lhs[rhs=1,"number"==typeof(lhs=lhs.length)&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)]}).$$s=this,$$12.$$arity=1,$$12)),$send(hash_keys,"each_with_index",[],(($$13=function(key,idx){var self=null==$$13.$$s?this:$$13.$$s;return null==key&&(key=nil),null==idx&&(idx=nil),idx["$=="](0)||self.$push(", "),self.$push(key+": "),self.$push(hash_obj["$[]"](key))}).$$s=this,$$13.$$arity=2,$$13)),this.$wrap("$hash2(["+hash_keys.$join(", ")+"], {","})")},$HashNode_compile_hash2$11.$$arity=0)}($nesting[0],$$($nesting,"Base"),$nesting),function($base,$KwSplatNode_compile$14,$parent_nesting){$KwSplatNode_compile$14=$klass($base,$KwSplatNode_compile$14,"KwSplatNode"),[$KwSplatNode_compile$14].concat($parent_nesting);return $KwSplatNode_compile$14.$handle("kwsplat"),$KwSplatNode_compile$14.$children("value"),Opal.def($KwSplatNode_compile$14,"$compile",$KwSplatNode_compile$14=function(){return this.$push("Opal.to_hash(",this.$expr(this.$value()),")")},$KwSplatNode_compile$14.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/array"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send;return Opal.add_stubs(["$require","$handle","$empty?","$children","$push","$each","$==","$type","$expr","$<<","$fragment"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$ArrayNode_compile$1,$parent_nesting){$ArrayNode_compile$1=$klass($base,$ArrayNode_compile$1,"ArrayNode"),[$ArrayNode_compile$1].concat($parent_nesting);return $ArrayNode_compile$1.$handle("array"),Opal.def($ArrayNode_compile$1,"$compile",$ArrayNode_compile$1=function(){var $a,$$2,join,code=nil,work=nil;return $truthy(this.$children()["$empty?"]())?this.$push("[]"):(code=($a=[[],[]])[0],work=$a[1],$send(this.$children(),"each",[],(($$2=function(child){var splat,part,self=null==$$2.$$s?this:$$2.$$s;return null==child&&(child=nil),splat=child.$type()["$=="]("splat"),part=self.$expr(child),$truthy(splat)?($truthy(work["$empty?"]())?($truthy(code["$empty?"]())?code["$<<"](self.$fragment("[].concat(")):code["$<<"](self.$fragment(".concat(")))["$<<"](part)["$<<"](self.$fragment(")")):($truthy(code["$empty?"]())?code["$<<"](self.$fragment("["))["$<<"](work)["$<<"](self.$fragment("]")):code["$<<"](self.$fragment(".concat(["))["$<<"](work)["$<<"](self.$fragment("])")),code["$<<"](self.$fragment(".concat("))["$<<"](part)["$<<"](self.$fragment(")"))),work=[]):($truthy(work["$empty?"]())||work["$<<"](self.$fragment(", ")),work["$<<"](part))}).$$s=this,$$2.$$arity=1,$$2)),$truthy(work["$empty?"]())||(join=[this.$fragment("["),work,this.$fragment("]")],$truthy(code["$empty?"]())?code=join:code.$push([this.$fragment(".concat("),join,this.$fragment(")")])),this.$push(code))},$ArrayNode_compile$1.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/defined"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$slice=Opal.slice,$send=Opal.send,$range=Opal.range;return Opal.add_stubs(["$require","$handle","$children","$type","$value","$===","$push","$inspect","$to_s","$==","$size","$[]","$compile_defined_send","$wrap","$compile_defined_ivar","$compile_defined_super","$compile_defined_yield","$compile_defined_xstr","$compile_defined_const","$compile_defined_cvar","$compile_defined_gvar","$compile_defined_back_ref","$compile_defined_nth_ref","$compile_defined_array","$respond_to?","$__send__","$new_temp","$scope","$expr","$wrap_with_try_catch","$mid_to_jsid","$compile_defined","$compile_send_recv_doesnt_raise","$each","$s","$uses_block!","$block_name","$find_parent_def","$nil?","$class_variable_owner","$helper","$include?","$each_with_index"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$DefinedNode_compile_defined_array$16,$DefinedNode_compile_defined_nth_ref$15){$DefinedNode_compile_defined_array$16=$klass($base,$DefinedNode_compile_defined_array$16,"DefinedNode"),[$DefinedNode_compile_defined_array$16].concat($DefinedNode_compile_defined_nth_ref$15);return $DefinedNode_compile_defined_array$16.$handle("defined?"),$DefinedNode_compile_defined_array$16.$children("value"),Opal.def($DefinedNode_compile_defined_array$16,"$compile",$DefinedNode_compile_defined_nth_ref$15=function(){var self=this,$case=nil,$ret_or_1=nil;return $case=self.$value().$type(),"self"["$==="]($case)||"nil"["$==="]($case)||"false"["$==="]($case)||"true"["$==="]($case)?self.$push(self.$value().$type().$to_s().$inspect()):"lvasgn"["$==="]($case)||"ivasgn"["$==="]($case)||"gvasgn"["$==="]($case)||"cvasgn"["$==="]($case)||"casgn"["$==="]($case)||"op_asgn"["$==="]($case)||"or_asgn"["$==="]($case)||"and_asgn"["$==="]($case)?self.$push("'assignment'"):"lvar"["$==="]($case)?self.$push("'local-variable'"):"begin"["$==="]($case)?$truthy($truthy($ret_or_1=self.$value().$children().$size()["$=="](1))?self.$value().$children()["$[]"](0).$type()["$=="]("masgn"):$ret_or_1)?self.$push("'assignment'"):self.$push("'expression'"):"send"["$==="]($case)?(self.$compile_defined_send(self.$value()),self.$wrap("("," ? 'method' : nil)")):"ivar"["$==="]($case)?(self.$compile_defined_ivar(self.$value()),self.$wrap("("," ? 'instance-variable' : nil)")):"zsuper"["$==="]($case)||"super"["$==="]($case)?self.$compile_defined_super():"yield"["$==="]($case)?(self.$compile_defined_yield(),self.$wrap("("," ? 'yield' : nil)")):"xstr"["$==="]($case)?self.$compile_defined_xstr(self.$value()):"const"["$==="]($case)?(self.$compile_defined_const(self.$value()),self.$wrap("("," ? 'constant' : nil)")):"cvar"["$==="]($case)?(self.$compile_defined_cvar(self.$value()),self.$wrap("("," ? 'class variable' : nil)")):"gvar"["$==="]($case)?(self.$compile_defined_gvar(self.$value()),self.$wrap("("," ? 'global-variable' : nil)")):"back_ref"["$==="]($case)?(self.$compile_defined_back_ref(),self.$wrap("("," ? 'global-variable' : nil)")):"nth_ref"["$==="]($case)?(self.$compile_defined_nth_ref(),self.$wrap("("," ? 'global-variable' : nil)")):"array"["$==="]($case)?(self.$compile_defined_array(self.$value()),self.$wrap("("," ? 'expression' : nil)")):self.$push("'expression'")},$DefinedNode_compile_defined_nth_ref$15.$$arity=0),Opal.def($DefinedNode_compile_defined_array$16,"$compile_defined",$DefinedNode_compile_defined_nth_ref$15=function(node){var node_tmp,type=node.$type();return $truthy(this["$respond_to?"]("compile_defined_"+type))?this.$__send__("compile_defined_"+type,node):(node_tmp=this.$scope().$new_temp(),this.$push("("+node_tmp+" = ",this.$expr(node),")"),node_tmp)},$DefinedNode_compile_defined_nth_ref$15.$$arity=1),Opal.def($DefinedNode_compile_defined_array$16,"$wrap_with_try_catch",$DefinedNode_compile_defined_nth_ref$15=function(code){var returning_tmp=this.$scope().$new_temp();return this.$push("("+returning_tmp+" = (function() { try {"),this.$push("  return "+code+";"),this.$push("} catch ($err) {"),this.$push("  if (Opal.rescue($err, [Opal.Exception])) {"),this.$push("    try {"),this.$push("      return false;"),this.$push("    } finally { Opal.pop_exception() }"),this.$push("  } else { throw $err; }"),this.$push("}})())"),returning_tmp},$DefinedNode_compile_defined_nth_ref$15.$$arity=1),Opal.def($DefinedNode_compile_defined_array$16,"$compile_send_recv_doesnt_raise",$DefinedNode_compile_defined_nth_ref$15=function(recv_code){return this.$wrap_with_try_catch(recv_code)},$DefinedNode_compile_defined_nth_ref$15.$$arity=1),Opal.def($DefinedNode_compile_defined_array$16,"$compile_defined_send",$DefinedNode_compile_defined_nth_ref$15=function($a){var $$6,recv_value_tmp,meth_tmp,recv=nil,method_name=nil,recv_code=nil,recv_tmp=nil,$a=[].concat(Opal.to_a($a)),recv=null==$a[0]?nil:$a[0],method_name=null==$a[1]?nil:$a[1],args=$slice.call($a,2),mid=this.$mid_to_jsid(method_name.$to_s());return $truthy(recv)?(recv_code=this.$compile_defined(recv),this.$push(" && "),recv.$type()["$=="]("send")&&(recv_code=this.$compile_send_recv_doesnt_raise(recv_code),this.$push(" && ")),recv_tmp=this.$scope().$new_temp(),this.$push("("+recv_tmp+" = ",recv_code,", "+recv_tmp+") && ")):recv_tmp="self",recv_value_tmp=this.$scope().$new_temp(),this.$push("("+recv_value_tmp+" = "+recv_tmp+") && "),meth_tmp=this.$scope().$new_temp(),this.$push("((("+meth_tmp+" = "+recv_value_tmp+mid+") && !"+meth_tmp+".$$stub)"),this.$push(" || "+recv_value_tmp+"['$respond_to_missing?']('"+method_name+"'))"),$send(args,"each",[],(($$6=function(arg){var self=null==$$6.$$s?this:$$6.$$s,$case=nil;return null==arg&&(arg=nil),$case=arg.$type(),"block_pass"["$==="]($case)?nil:(self.$push(" && "),self.$compile_defined(arg))}).$$s=this,$$6.$$arity=1,$$6)),this.$wrap("(",")"),meth_tmp+"()"},$DefinedNode_compile_defined_nth_ref$15.$$arity=1),Opal.def($DefinedNode_compile_defined_array$16,"$compile_defined_ivar",$DefinedNode_compile_defined_nth_ref$15=function(node){var name=node.$children()["$[]"](0).$to_s()["$[]"]($range(1,-1,!1)),tmp=this.$scope().$new_temp();return this.$push("("+tmp+" = self['"+name+"'], "+tmp+" != null && "+tmp+" !== nil)"),tmp},$DefinedNode_compile_defined_nth_ref$15.$$arity=1),Opal.def($DefinedNode_compile_defined_array$16,"$compile_defined_super",$DefinedNode_compile_defined_nth_ref$15=function(){return this.$push(this.$expr(this.$s("defined_super")))},$DefinedNode_compile_defined_nth_ref$15.$$arity=0),Opal.def($DefinedNode_compile_defined_array$16,"$compile_defined_yield",$DefinedNode_compile_defined_nth_ref$15=function(){var block_name,self=this,$ret_or_2=nil;return self.$scope()["$uses_block!"](),block_name=$truthy($ret_or_2=self.$scope().$block_name())?$ret_or_2:self.$scope().$find_parent_def().$block_name(),self.$push("("+block_name+" != null && "+block_name+" !== nil)"),block_name},$DefinedNode_compile_defined_nth_ref$15.$$arity=0),Opal.def($DefinedNode_compile_defined_array$16,"$compile_defined_xstr",$DefinedNode_compile_defined_nth_ref$15=function(node){return this.$push("(typeof(",this.$expr(node),') !== "undefined")')},$DefinedNode_compile_defined_nth_ref$15.$$arity=1),Opal.def($DefinedNode_compile_defined_array$16,"$compile_defined_const",$DefinedNode_compile_defined_nth_ref$15=function($a){var const_scope_tmp,const_scope=nil,$a=[].concat(Opal.to_a($a)),const_scope=null==$a[0]?nil:$a[0],const_name=null==$a[1]?nil:$a[1],const_tmp=this.$scope().$new_temp();return $truthy(const_scope["$nil?"]())?this.$push("("+const_tmp+" = $$($nesting, '"+const_name+"', 'skip_raise'))"):const_scope["$=="](this.$s("cbase"))?this.$push("("+const_tmp+" = $$$('::', '"+const_name+"', 'skip_raise'))"):(const_scope_tmp=this.$compile_defined(const_scope),this.$push(" && ("+const_tmp+" = $$$("+const_scope_tmp+", '"+const_name+"', 'skip_raise'))")),const_tmp},$DefinedNode_compile_defined_nth_ref$15.$$arity=1),Opal.def($DefinedNode_compile_defined_array$16,"$compile_defined_cvar",$DefinedNode_compile_defined_nth_ref$15=function($a){var $a=[].concat(Opal.to_a($a)),cvar_name=null==$a[0]?nil:$a[0],cvar_tmp=(null==$a[1]||$a[1],this.$scope().$new_temp());return this.$push("("+cvar_tmp+" = "+this.$class_variable_owner()+".$$cvars['"+cvar_name+"'], "+cvar_tmp+" != null)"),cvar_tmp},$DefinedNode_compile_defined_nth_ref$15.$$arity=1),Opal.def($DefinedNode_compile_defined_array$16,"$compile_defined_gvar",$DefinedNode_compile_defined_nth_ref$15=function(node){var gvar_temp,name=nil;return this.$helper("gvars"),name=node.$children()["$[]"](0).$to_s()["$[]"]($range(1,-1,!1)),gvar_temp=this.$scope().$new_temp(),$truthy(["~","!"]["$include?"](name))?this.$push("("+gvar_temp+" = ",this.$expr(node)," || true)"):this.$push("("+gvar_temp+" = $gvars["+name.$inspect()+"], "+gvar_temp+" != null)"),gvar_temp},$DefinedNode_compile_defined_nth_ref$15.$$arity=1),Opal.def($DefinedNode_compile_defined_array$16,"$compile_defined_back_ref",$DefinedNode_compile_defined_nth_ref$15=function(){var back_ref_temp;return this.$helper("gvars"),back_ref_temp=this.$scope().$new_temp(),this.$push("("+back_ref_temp+" = $gvars['~'], "+back_ref_temp+" != null && "+back_ref_temp+" !== nil)"),back_ref_temp},$DefinedNode_compile_defined_nth_ref$15.$$arity=0),Opal.def($DefinedNode_compile_defined_array$16,"$compile_defined_nth_ref",$DefinedNode_compile_defined_nth_ref$15=function(){var nth_ref_tmp;return this.$helper("gvars"),nth_ref_tmp=this.$scope().$new_temp(),this.$push("("+nth_ref_tmp+" = $gvars['~'], "+nth_ref_tmp+" != null && "+nth_ref_tmp+" != nil)"),nth_ref_tmp},$DefinedNode_compile_defined_nth_ref$15.$$arity=0),Opal.def($DefinedNode_compile_defined_array$16,"$compile_defined_array",$DefinedNode_compile_defined_array$16=function(node){var $$17;return $send(node.$children(),"each_with_index",[],(($$17=function(child,idx){var self=null==$$17.$$s?this:$$17.$$s;return null==child&&(child=nil),null==idx&&(idx=nil),idx["$=="](0)||self.$push(" && "),self.$compile_defined(child)}).$$s=this,$$17.$$arity=2,$$17))},$DefinedNode_compile_defined_array$16.$$arity=1),nil&&"compile_defined_array"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/masgn"]=function(Opal){function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send;return Opal.add_stubs(["$require","$freeze","$handle","$children","$new_temp","$scope","$==","$type","$rhs","$push","$expr","$any?","$size","$compile_masgn","$lhs","$queue_temp","$take_while","$!=","$drop","$each_with_index","$compile_assignment","$empty?","$shift","$[]","$helper","$<<","$dup","$s","$!","$>=","$updated","$include?","$+","$last","$raise"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$MassAssignNode_compile_assignment$7,$MassAssignNode_compile_masgn$3){var $MassAssignNode_compile_assignment$7=$klass($base,$MassAssignNode_compile_assignment$7,"MassAssignNode"),$nesting=[$MassAssignNode_compile_assignment$7].concat($MassAssignNode_compile_masgn$3);return Opal.const_set($nesting[0],"SIMPLE_ASSIGNMENT",["lvasgn","ivasgn","lvar","gvasgn","cdecl","casgn"].$freeze()),$MassAssignNode_compile_assignment$7.$handle("masgn"),$MassAssignNode_compile_assignment$7.$children("lhs","rhs"),Opal.def($MassAssignNode_compile_assignment$7,"$compile",$MassAssignNode_compile_masgn$3=function(){var $$2,rhs_len,self=this,retval=nil,array=self.$scope().$new_temp();return self.$rhs().$type()["$=="]("array")?(self.$push(array+" = ",self.$expr(self.$rhs())),rhs_len=$truthy($send(self.$rhs().$children(),"any?",[],(($$2=function(c){null==$$2.$$s||$$2.$$s;return null==c&&(c=nil),c.$type()["$=="]("splat")}).$$s=self,$$2.$$arity=1,$$2)))?nil:self.$rhs().$children().$size(),self.$compile_masgn(self.$lhs().$children(),array,rhs_len),self.$push(", "+array)):(self.$rhs().$type()["$=="]("begin"),retval=self.$scope().$new_temp(),self.$push(retval+" = ",self.$expr(self.$rhs())),self.$push(", "+array+" = Opal.to_ary("+retval+")"),self.$compile_masgn(self.$lhs().$children(),array),self.$push(", "+retval),self.$scope().$queue_temp(retval)),self.$scope().$queue_temp(array)},$MassAssignNode_compile_masgn$3.$$arity=0),Opal.def($MassAssignNode_compile_assignment$7,"$compile_masgn",$MassAssignNode_compile_masgn$3=function(lhs_items,array,len){var $$4,$$5,$$6,tmp,pre_splat=nil,post_splat=nil,splat=nil,part=nil;return null==len&&(len=nil),pre_splat=$send(lhs_items,"take_while",[],(($$4=function(child){null==$$4.$$s||$$4.$$s;return null==child&&(child=nil),child.$type()["$!="]("splat")}).$$s=this,$$4.$$arity=1,$$4)),post_splat=lhs_items.$drop(pre_splat.$size()),$send(pre_splat,"each_with_index",[],(($$5=function(child,idx){var self=null==$$5.$$s?this:$$5.$$s;return null==child&&(child=nil),null==idx&&(idx=nil),self.$compile_assignment(child,array,idx,len)}).$$s=this,$$5.$$arity=2,$$5)),$truthy(post_splat["$empty?"]())?nil:(splat=post_splat.$shift(),$truthy(post_splat["$empty?"]())?$truthy(part=splat.$children()["$[]"](0))?(this.$helper("slice"),part=part.$dup()["$<<"](this.$s("js_tmp","$slice.call("+array+", "+pre_splat.$size()+")")),this.$push(", "),this.$push(this.$expr(part))):nil:(tmp=this.$scope().$new_temp(),this.$push(", "+tmp+" = "+array+".length - "+post_splat.$size()),this.$push(", "+tmp+" = ("+tmp+" < "+pre_splat.$size()+") ? "+pre_splat.$size()+" : "+tmp),$truthy(part=splat.$children()["$[]"](0))&&(this.$helper("slice"),part=part.$dup()["$<<"](this.$s("js_tmp","$slice.call("+array+", "+pre_splat.$size()+", "+tmp+")")),this.$push(", "),this.$push(this.$expr(part))),$send(post_splat,"each_with_index",[],(($$6=function(child,idx){var self=null==$$6.$$s?this:$$6.$$s;return null==child&&(child=nil),null==idx&&(idx=nil),idx["$=="](0)?self.$compile_assignment(child,array,tmp):self.$compile_assignment(child,array,tmp+" + "+idx)}).$$s=this,$$6.$$arity=2,$$6)),this.$scope().$queue_temp(tmp)))},$MassAssignNode_compile_masgn$3.$$arity=-3),Opal.def($MassAssignNode_compile_assignment$7,"$compile_assignment",$MassAssignNode_compile_assignment$7=function(child,array,idx,lhs){var tmp,self=this,assign=nil,rhs=nil,part=nil;if(null==lhs&&(lhs=nil),assign=$truthy($truthy(rhs=lhs["$!"]())?rhs:(rhs=lhs,"number"==typeof(lhs=idx)&&"number"==typeof rhs?rhs<=lhs:lhs["$>="](rhs)))?self.$s("js_tmp","("+array+"["+idx+"] == null ? nil : "+array+"["+idx+"])"):self.$s("js_tmp",array+"["+idx+"]"),part=child.$updated(),$truthy($$($nesting,"SIMPLE_ASSIGNMENT")["$include?"](child.$type())))part=part.$updated(nil,$rb_plus(part.$children(),[assign]));else if(child.$type()["$=="]("send"))part=part.$updated(nil,$rb_plus(part.$children(),[assign]));else if(child.$type()["$=="]("attrasgn"))part.$last()["$<<"](assign);else{if(child.$type()["$=="]("mlhs"))return tmp=self.$scope().$new_temp(),self.$push(", ("+tmp+" = Opal.to_ary("+assign.$children()["$[]"](0)+")"),self.$compile_masgn(child.$children(),tmp),self.$push(")"),self.$scope().$queue_temp(tmp),nil;self.$raise("Bad child node in masgn LHS: "+child+". LHS: "+self.$lhs())}return self.$push(", "),self.$push(self.$expr(part))},$MassAssignNode_compile_assignment$7.$$arity=-4),nil&&"compile_assignment"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/arglist"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send=Opal.send,$truthy=Opal.truthy;return Opal.add_stubs(["$require","$handle","$each","$children","$==","$type","$expr","$empty?","$<<","$fragment","$push"]),self.$require("opal/nodes/base"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$ArglistNode_compile$1,$parent_nesting){$ArglistNode_compile$1=$klass($base,$ArglistNode_compile$1,"ArglistNode"),[$ArglistNode_compile$1].concat($parent_nesting);return $ArglistNode_compile$1.$handle("arglist"),Opal.def($ArglistNode_compile$1,"$compile",$ArglistNode_compile$1=function(){var $$2,join,code=nil,work=nil,$a=[[],[]],code=$a[0],work=$a[1];return $send(this.$children(),"each",[],(($$2=function(current){var splat,arg,self=null==$$2.$$s?this:$$2.$$s;return null==current&&(current=nil),splat=current.$type()["$=="]("splat"),arg=self.$expr(current),$truthy(splat)?($truthy(work["$empty?"]())?$truthy(code["$empty?"]())?code["$<<"](arg):code["$<<"](self.$fragment(".concat("))["$<<"](arg)["$<<"](self.$fragment(")")):($truthy(code["$empty?"]())?code["$<<"](self.$fragment("["))["$<<"](work)["$<<"](self.$fragment("]")):code["$<<"](self.$fragment(".concat(["))["$<<"](work)["$<<"](self.$fragment("])")),code["$<<"](self.$fragment(".concat("))["$<<"](arg)["$<<"](self.$fragment(")"))),work=[]):($truthy(work["$empty?"]())||work["$<<"](self.$fragment(", ")),work["$<<"](arg))}).$$s=this,$$2.$$arity=1,$$2)),$truthy(work["$empty?"]())||(join=work,$truthy(code["$empty?"]())?code=join:code["$<<"](this.$fragment(".concat(["))["$<<"](join)["$<<"](this.$fragment("])"))),$send(this,"push",Opal.to_a(code))},$ArglistNode_compile$1.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/x_string"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send,$range=Opal.range,$lambda=Opal.lambda;return Opal.add_stubs(["$handle","$unpack_return","$children","$strip_empty_children","$single_line?","$compile_single_line","$each","$compile_child","$recv?","$wrap","$push","$private","$type","$===","$source","$expression","$loc","$new","$scope","$expr","$raise","$shift","$empty?","$s","$==","$strip","$=~","$!","$pop","$extract_last_value","$rstrip","$expr?","$end_with?","$warning","$compiler","$line","$[]","$size","$none?","$first","$dup","$nil?","$any?","$last"]),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$XStringNode_strip_empty_children$10,$XStringNode_unpack_return$9){var $XStringNode_strip_empty_children$10=$klass($base,$XStringNode_strip_empty_children$10,"XStringNode"),$nesting=[$XStringNode_strip_empty_children$10].concat($XStringNode_unpack_return$9);return $XStringNode_strip_empty_children$10.$$prototype.should_add_semicolon=$XStringNode_strip_empty_children$10.$$prototype.returning=nil,$XStringNode_strip_empty_children$10.$handle("xstr"),Opal.def($XStringNode_strip_empty_children$10,"$compile",$XStringNode_unpack_return$9=function(){var $$2,unpacked_children,stripped_children;return this.should_add_semicolon=!1,unpacked_children=this.$unpack_return(this.$children()),stripped_children=this.$strip_empty_children(unpacked_children),$truthy(this["$single_line?"](stripped_children))?this.$compile_single_line(stripped_children):$send(unpacked_children,"each",[],(($$2=function(c){var self=null==$$2.$$s?this:$$2.$$s;return null==c&&(c=nil),self.$compile_child(c)}).$$s=this,$$2.$$arity=1,$$2)),$truthy(this["$recv?"]())&&this.$wrap("(",")"),$truthy(this.should_add_semicolon)?this.$push(";"):nil},$XStringNode_unpack_return$9.$$arity=0),$XStringNode_strip_empty_children$10.$private(),Opal.def($XStringNode_strip_empty_children$10,"$compile_child",$XStringNode_unpack_return$9=function(child){var self=this,$case=nil,value=nil;return $case=child.$type(),"str"["$==="]($case)?(value=child.$loc().$expression().$source(),self.$push($$($nesting,"Fragment").$new(value,self.$scope(),child))):"begin"["$==="]($case)||"gvar"["$==="]($case)||"ivar"["$==="]($case)||"nil"["$==="]($case)?self.$push(self.$expr(child)):self.$raise("Unsupported xstr part: "+child.$type())},$XStringNode_unpack_return$9.$$arity=1),Opal.def($XStringNode_strip_empty_children$10,"$compile_single_line",$XStringNode_unpack_return$9=function(children){var $$5,self=this,has_embeded_return=nil,first_child=nil,$ret_or_1=nil,first_value=nil,$ret_or_2=nil,last_child=nil,$ret_or_3=nil,last_value=nil,has_embeded_return=!1,first_child=children.$shift(),single_child=children["$empty?"]();return(first_child=$truthy($ret_or_1=first_child)?$ret_or_1:self.$s("nil")).$type()["$=="]("str")&&(first_value=first_child.$loc().$expression().$source().$strip(),has_embeded_return=first_value["$=~"](/^return\b/)),$truthy($truthy($ret_or_2=self.returning)?has_embeded_return["$!"]():$ret_or_2)&&self.$push("return "),(last_child=$truthy($ret_or_3=children.$pop())?$ret_or_3:first_child).$type()["$=="]("str")&&(last_value=self.$extract_last_value(last_child)),$truthy(single_child)||(self.should_add_semicolon=!1,self.$compile_child(first_child),$send(children,"each",[],(($$5=function(c){var self=null==$$5.$$s?this:$$5.$$s;return null==c&&(c=nil),self.$compile_child(c)}).$$s=self,$$5.$$arity=1,$$5))),last_child.$type()["$=="]("str")?self.$push($$($nesting,"Fragment").$new(last_value,self.$scope(),last_child)):self.$compile_child(last_child)},$XStringNode_unpack_return$9.$$arity=1),Opal.def($XStringNode_strip_empty_children$10,"$extract_last_value",$XStringNode_unpack_return$9=function(last_child){var self=this,last_value=nil,$ret_or_4=nil,$ret_or_5=nil,last_value=last_child.$loc().$expression().$source().$rstrip();return $truthy($truthy($ret_or_4=$truthy($ret_or_5=self.returning)?$ret_or_5:self["$expr?"]())?last_value["$end_with?"](";"):$ret_or_4)&&(self.$compiler().$warning("Removed semicolon ending x-string expression, interpreted as unintentional",last_child.$line()),last_value=last_value["$[]"]($range(0,-2,!1))),$truthy(self.returning)&&(self.should_add_semicolon=!0),last_value},$XStringNode_unpack_return$9.$$arity=1),Opal.def($XStringNode_strip_empty_children$10,"$single_line?",$XStringNode_unpack_return$9=function(children){var $$8,$ret_or_6;return $truthy($ret_or_6=children.$size()["$=="](1))?$ret_or_6:$send(children,"none?",[],(($$8=function(c){var $ret_or_7;null==$$8.$$s||$$8.$$s;return null==c&&(c=nil),$truthy($ret_or_7=c.$type()["$=="]("str"))?c.$loc().$expression().$source()["$end_with?"]("\n"):$ret_or_7}).$$s=this,$$8.$$arity=1,$$8))},$XStringNode_unpack_return$9.$$arity=1),Opal.def($XStringNode_strip_empty_children$10,"$unpack_return",$XStringNode_unpack_return$9=function(children){var first_child=nil,first_child=children.$first();return this.returning=!1,first_child.$type()["$=="]("js_return")&&(this.returning=!0,children=first_child.$children()),children},$XStringNode_unpack_return$9.$$arity=1),Opal.def($XStringNode_strip_empty_children$10,"$strip_empty_children",$XStringNode_strip_empty_children$10=function(children){var $$11,empty_line=nil,$ret_or_10=nil,$ret_or_11=nil;for(children=children.$dup(),empty_line=$lambda((($$11=function(child){var $ret_or_8,$ret_or_9;null==$$11.$$s||$$11.$$s;return null==child&&(child=nil),$truthy($ret_or_8=child["$nil?"]())?$ret_or_8:$truthy($ret_or_9=child.$type()["$=="]("str"))?child.$loc().$expression().$source().$rstrip()["$empty?"]():$ret_or_9}).$$s=this,$$11.$$arity=1,$$11));$truthy($truthy($ret_or_10=children["$any?"]())?empty_line["$[]"](children.$first()):$ret_or_10);)children.$shift();for(;$truthy($truthy($ret_or_11=children["$any?"]())?empty_line["$[]"](children.$last()):$ret_or_11);)children.$pop();return children},$XStringNode_strip_empty_children$10.$$arity=1),nil&&"strip_empty_children"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/lambda"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$send=Opal.send;return Opal.add_stubs(["$require","$handle","$children","$helper","$defines_lambda","$scope","$push","$expr","$iter"]),self.$require("opal/nodes/call"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($base,$nesting){$nesting=[$module($base,"Nodes")].concat($nesting);return function($base,$LambdaNode_compile$1,$parent_nesting){$LambdaNode_compile$1=$klass($base,$LambdaNode_compile$1,"LambdaNode"),[$LambdaNode_compile$1].concat($parent_nesting);return $LambdaNode_compile$1.$handle("lambda"),$LambdaNode_compile$1.$children("iter"),Opal.def($LambdaNode_compile$1,"$compile",$LambdaNode_compile$1=function(){var $$2;return this.$helper("lambda"),$send(this.$scope(),"defines_lambda",[],(($$2=function(){var self=null==$$2.$$s?this:$$2.$$s;return self.$push("$lambda(",self.$expr(self.$iter()),")")}).$$s=this,$$2.$$arity=0,$$2))},$LambdaNode_compile$1.$$arity=0),nil&&"compile"}($nesting[0],$$($nesting,"Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes"]=function(Opal){var self=Opal.top;Opal.nil,Opal.$$$,Opal.$$;return Opal.add_stubs(["$require"]),self.$require("opal/nodes/base"),self.$require("opal/nodes/literal"),self.$require("opal/nodes/variables"),self.$require("opal/nodes/constants"),self.$require("opal/nodes/call"),self.$require("opal/nodes/csend"),self.$require("opal/nodes/call_special"),self.$require("opal/nodes/module"),self.$require("opal/nodes/class"),self.$require("opal/nodes/singleton_class"),self.$require("opal/nodes/args"),self.$require("opal/nodes/args/arity_check"),self.$require("opal/nodes/iter"),self.$require("opal/nodes/def"),self.$require("opal/nodes/defs"),self.$require("opal/nodes/if"),self.$require("opal/nodes/logic"),self.$require("opal/nodes/definitions"),self.$require("opal/nodes/yield"),self.$require("opal/nodes/rescue"),self.$require("opal/nodes/case"),self.$require("opal/nodes/super"),self.$require("opal/nodes/top"),self.$require("opal/nodes/while"),self.$require("opal/nodes/hash"),self.$require("opal/nodes/array"),self.$require("opal/nodes/defined"),self.$require("opal/nodes/masgn"),self.$require("opal/nodes/arglist"),self.$require("opal/nodes/x_string"),self.$require("opal/nodes/lambda")},Opal.modules["opal/eof_content"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$module=(Opal.$$$,Opal.$$,Opal.module),$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send,$range=Opal.range;return Opal.add_stubs(["$empty?","$[]","$last_token_position","$drop_while","$lines","$==","$join","$private","$last","$end_pos"]),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($EofContent_last_token_position$4,$EofContent_eof$2){$EofContent_last_token_position$4=$klass($EofContent_last_token_position$4,null,"EofContent"),$EofContent_eof$2=[$EofContent_last_token_position$4].concat($EofContent_eof$2);return $EofContent_last_token_position$4.$$prototype.tokens=$EofContent_last_token_position$4.$$prototype.source=nil,Opal.const_set($EofContent_eof$2[0],"DATA_SEPARATOR","__END__\n"),Opal.def($EofContent_last_token_position$4,"$initialize",$EofContent_eof$2=function(tokens,source){return this.tokens=tokens,this.source=source},$EofContent_eof$2.$$arity=2),Opal.def($EofContent_last_token_position$4,"$eof",$EofContent_eof$2=function(){var $$3,eof_content=nil,$ret_or_1=nil;return $truthy(this.tokens["$empty?"]())?nil:(eof_content=this.source["$[]"](Opal.Range.$new(this.$last_token_position(),-1,!1)),$truthy(eof_content)?(eof_content=$send(eof_content.$lines(),"drop_while",[],(($$3=function(line){null==$$3.$$s||$$3.$$s;return null==line&&(line=nil),line["$=="]("\n")}).$$s=this,$$3.$$arity=1,$$3)))["$[]"](0)["$=="]("__END__\n")?(eof_content=$truthy($ret_or_1=eof_content["$[]"]($range(1,-1,!1)))?$ret_or_1:[]).$join():eof_content["$=="](["__END__"])?"":nil:nil)},$EofContent_eof$2.$$arity=0),$EofContent_last_token_position$4.$private(),Opal.def($EofContent_last_token_position$4,"$last_token_position",$EofContent_last_token_position$4=function(){var $b=this.tokens.$last(),$a=Opal.to_ary($b);null==$a[0]||$a[0];return $b=null==$a[1]?nil:$a[1],null==($a=Opal.to_ary($b))[0]||$a[0],(null==$a[1]?nil:$a[1]).$end_pos()},$EofContent_last_token_position$4.$$arity=0),nil&&"last_token_position"}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/errors"]=function(Opal){function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}Opal.top;var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$truthy=Opal.truthy,$send=Opal.send,$alias=Opal.alias;return Opal.add_stubs(["$attr_reader","$attr_accessor","$new","$respond_to?","$location","$location=","$-","$diagnostic","$diagnostic=","$to_a","$backtrace","$unshift","$to_s","$set_backtrace","$path","$lineno","$+","$label","$line","$lineno=","$source_line","$label=","$expression"]),function($Opal_add_opal_location_to_error$3,$Opal_opal_location_from_error$2){var $Opal_add_opal_location_to_error$3=$module($Opal_add_opal_location_to_error$3,"Opal"),$nesting=[$Opal_add_opal_location_to_error$3].concat($Opal_opal_location_from_error$2);return function($base,$super,$parent_nesting){[$klass($base,$super,"Error")].concat($parent_nesting)}($nesting[0],$$($nesting,"StandardError"),$nesting),function($base,self,$parent_nesting){var $GemNotFound_initialize$1;[self=$klass($base,self,"GemNotFound")].concat($parent_nesting),self.$attr_reader("gem_name"),Opal.def(self,"$initialize",$GemNotFound_initialize$1=function(gem_name){var $iter=$GemNotFound_initialize$1.$$p;return $iter&&($GemNotFound_initialize$1.$$p=null),this.gem_name=gem_name,$send2(this,$find_super(this,"initialize",$GemNotFound_initialize$1,!1,!0),"initialize",["can't find gem 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$truthy(error["$respond_to?"]("location"))&&($writer=[error.$location()],$send(opal_location,"location=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]),$truthy(error["$respond_to?"]("diagnostic"))&&($writer=[error.$diagnostic()],$send(opal_location,"diagnostic=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]),opal_location},$Opal_opal_location_from_error$2.$$arity=1),Opal.defs($Opal_add_opal_location_to_error$3,"$add_opal_location_to_error",$Opal_add_opal_location_to_error$3=function(opal_location,error){var backtrace=nil;return(backtrace=error.$backtrace().$to_a()).$unshift(opal_location.$to_s()),error.$set_backtrace(backtrace),error},$Opal_add_opal_location_to_error$3.$$arity=2),function($OpalBacktraceLocation_location$eq$7,$OpalBacktraceLocation_diagnostic$eq$6){$OpalBacktraceLocation_location$eq$7=$klass($OpalBacktraceLocation_location$eq$7,null,"OpalBacktraceLocation"),[$OpalBacktraceLocation_location$eq$7].concat($OpalBacktraceLocation_diagnostic$eq$6);return $OpalBacktraceLocation_location$eq$7.$attr_accessor("path","lineno","label"),Opal.def($OpalBacktraceLocation_location$eq$7,"$initialize",$OpalBacktraceLocation_diagnostic$eq$6=function(path,lineno,$a){return null==path&&(path=nil),null==lineno&&(lineno=nil),null==$a&&($a=nil),$a=[path,lineno,$a],this.path=$a[0],this.lineno=$a[1],this.label=$a[2],$a},$OpalBacktraceLocation_diagnostic$eq$6.$$arity=-1),Opal.def($OpalBacktraceLocation_location$eq$7,"$to_s",$OpalBacktraceLocation_diagnostic$eq$6=function(){var string=nil,string=this.$path();return $truthy(this.$lineno())&&(string=$rb_plus(string,":"+this.$lineno())),string=$rb_plus(string,":in "),string=$truthy(this.$label())?$rb_plus(string,"`"+this.$label()+"'"):$rb_plus(string,"unknown")},$OpalBacktraceLocation_diagnostic$eq$6.$$arity=0),$alias($OpalBacktraceLocation_location$eq$7,"line","lineno"),Opal.def($OpalBacktraceLocation_location$eq$7,"$diagnostic=",$OpalBacktraceLocation_diagnostic$eq$6=function(diagnostic){var $writer;return $truthy(diagnostic)?($writer=[diagnostic.$location()],$send(this,"location=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]):nil},$OpalBacktraceLocation_diagnostic$eq$6.$$arity=1),Opal.def($OpalBacktraceLocation_location$eq$7,"$location=",$OpalBacktraceLocation_location$eq$7=function(location){var $writer=nil;return $truthy(location)?($writer=[location.$line()],$send(this,"lineno=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)],$truthy(location["$respond_to?"]("source_line"))?($writer=[location.$source_line()],$send(this,"label=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]):$truthy(location["$respond_to?"]("expression"))?($writer=[location.$expression().$source_line()],$send(this,"label=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]):nil):nil},$OpalBacktraceLocation_location$eq$7.$$arity=1),nil&&"location="}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/magic_comments"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$hash2=Opal.hash2,$truthy=Opal.truthy,$send=Opal.send;return Opal.add_stubs(["$freeze","$line","$loc","$take","$each","$>=","$any?","$scan","$text","$to_sym","$===","$[]=","$-"]),function($MagicComments_parse$1,$parent_nesting){var $MagicComments_parse$1=$module($MagicComments_parse$1,"MagicComments"),$nesting=[$MagicComments_parse$1].concat($parent_nesting);return Opal.const_set($nesting[0],"MAGIC_COMMENT_RE",/^# *(\w+) *: *(\S+.*?) *$/.$freeze()),Opal.const_set($nesting[0],"EMACS_MAGIC_COMMENT_RE",/^# *-\*- *(\w+) *: *(\S+.*?) *-\*- *$/.$freeze()),Opal.defs($MagicComments_parse$1,"$parse",$MagicComments_parse$1=function(sexp,comments){var $$2,first_line=nil,flags=$hash2([],{});return $truthy(sexp)&&(first_line=sexp.$loc().$line(),comments=comments.$take(first_line)),$send(comments,"each",[],(($$2=function(comment){var $$3,$ret_or_1,lhs,rhs,self=null==$$2.$$s?this:$$2.$$s,$ret_or_2=nil,parts=nil;return null==comment&&(comment=nil),!$truthy($truthy($ret_or_1=first_line)?(lhs=comment.$loc().$line(),rhs=first_line,"number"==typeof lhs&&"number"==typeof rhs?rhs<=lhs:lhs["$>="](rhs)):$ret_or_1)&&$truthy($truthy($ret_or_2=(parts=comment.$text().$scan($$($nesting,"MAGIC_COMMENT_RE")))["$any?"]())?$ret_or_2:(parts=comment.$text().$scan($$($nesting,"EMACS_MAGIC_COMMENT_RE")))["$any?"]())?$send(parts,"each",[],(($$3=function(key,rhs){null==$$3.$$s||$$3.$$s;var lhs=nil,$case=nil;return null==key&&(key=nil),null==rhs&&(rhs=nil),lhs=[key.$to_sym(),!!"true"["$==="]($case=rhs)||!"false"["$==="]($case)&&rhs],$send(flags,"[]=",Opal.to_a(lhs)),lhs[rhs=1,"number"==typeof(lhs=lhs.length)&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)]}).$$s=self,$$3.$$arity=2,$$3)):nil}).$$s=this,$$2.$$arity=1,$$2)),flags},$MagicComments_parse$1.$$arity=2),nil&&"parse"}($$($nesting,"Opal"),$nesting)},Opal.modules["opal/compiler"]=function(Opal){function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$hash2=Opal.hash2,$klass=Opal.klass,$send=Opal.send,$truthy=Opal.truthy,$slice=Opal.slice;return Opal.add_stubs(["$require","$compile","$new","$freeze","$join","$dirname","$first","$split","$basename","$to_s","$cleanpath","$Pathname","$fetch","$define_method","$option_value","$key?","$[]","$!","$include?","$raise","$inspect","$[]=","$-","$compiler_option","$attr_reader","$attr_accessor","$parse","$re_raise_with_location","$flatten","$process","$end_with?","$code","$last","$<<","$fragment","$s","$map","$to_proc","$file","$source=","$default_parser","$tokenize","$associate_locations","$eof","$magic_comments","$to_sym","$strip","$location=","$opal_location_from_error","$path=","$label","$lines","$to_i","$line","$label=","$message","$set_backtrace","$backtrace","$add_opal_location_to_error","$warn","$empty?","$gsub","$+","$start_with?","$helpers","$new_temp","$queue_temp","$push_while","$pop_while","$in_while?","$nil?","$scope","$handlers","$type","$compile_to_fragments","$error","$returns","$===","$updated","$children","$loc","$uses_block!","$block_name","$find_parent_def","$cache","$source_map"]),self.$require("set"),self.$require("opal/parser"),self.$require("opal/fragment"),self.$require("opal/nodes"),self.$require("opal/eof_content"),self.$require("opal/errors"),self.$require("opal/magic_comments"),function($Opal_compile$1,$parent_nesting){var $Opal_compile$1=$module($Opal_compile$1,"Opal"),$nesting=[$Opal_compile$1].concat($parent_nesting);return Opal.defs($Opal_compile$1,"$compile",$Opal_compile$1=function(source,options){return null==options&&(options=$hash2([],{})),$$($nesting,"Compiler").$new(source,options).$compile()},$Opal_compile$1.$$arity=-2),function($Compiler_marshal_load$37,$Compiler_marshal_dump$36){var $Compiler_re_raise_with_location$17,$Compiler_indent$24,$Compiler_with_temp$25,$Compiler_in_while$26,$Compiler_in_case$27,$Compiler_marshal_load$37=$klass($Compiler_marshal_load$37,null,"Compiler"),$nesting=[$Compiler_marshal_load$37].concat($Compiler_marshal_dump$36);return 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null==options&&(options=$hash2([],{})),this.source=source,this.indent="",this.unique=0,this.options=options,this.comments=$$($nesting,"Hash").$new([]),this.case_stmt=nil,this.option_values=$hash2([],{}),this.magic_comments=$hash2([],{})},$Compiler_marshal_dump$36.$$arity=-2),Opal.def($Compiler_marshal_load$37,"$compile",$Compiler_marshal_dump$36=function(){var $$8;return this.$parse(),this.fragments=$send(this,"re_raise_with_location",[],(($$8=function(){var self=null==$$8.$$s?this:$$8.$$s;return null==self.sexp&&(self.sexp=nil),self.$process(self.sexp).$flatten()}).$$s=this,$$8.$$arity=0,$$8)),$truthy(this.fragments.$last().$code()["$end_with?"]("\n"))||this.fragments["$<<"](this.$fragment("\n",nil,this.$s("newline"))),this.result=$send(this.fragments,"map",[],"code".$to_proc()).$join("")},$Compiler_marshal_dump$36.$$arity=0),Opal.def($Compiler_marshal_load$37,"$parse",$Compiler_marshal_dump$36=function(){var $$10,$a,sexp,comments,tokens,self=this,$ret_or_3=nil;return 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$$13,$ret_or_5,self=this;return self.helpers=$truthy($ret_or_5=self.helpers)?$ret_or_5:$$($nesting,"Set").$new($send(self.$magic_comments()["$[]"]("helpers").$to_s().$split(","),"map",[],(($$13=function(h){null==$$13.$$s||$$13.$$s;return null==h&&(h=nil),h.$strip().$to_sym()}).$$s=self,$$13.$$arity=1,$$13)))},$Compiler_marshal_dump$36.$$arity=0),Opal.def($Compiler_marshal_load$37,"$operator_helpers",$Compiler_marshal_dump$36=function(){var self=this,$ret_or_6=nil;return self.operator_helpers=$truthy($ret_or_6=self.operator_helpers)?$ret_or_6:$$($nesting,"Set").$new()},$Compiler_marshal_dump$36.$$arity=0),Opal.def($Compiler_marshal_load$37,"$method_calls",$Compiler_marshal_dump$36=function(){var self=this,$ret_or_7=nil;return self.method_calls=$truthy($ret_or_7=self.method_calls)?$ret_or_7:$$($nesting,"Set").$new()},$Compiler_marshal_dump$36.$$arity=0),Opal.def($Compiler_marshal_load$37,"$error",$Compiler_marshal_dump$36=function(msg,line){var error,$writer;return null==line&&(line=nil),error=$$$($$$("::","Opal"),"SyntaxError").$new(msg),$writer=[$$$($$($nesting,"Opal"),"OpalBacktraceLocation").$new(this.$file(),line)],$send(error,"location=",Opal.to_a($writer)),$rb_minus($writer.length,1),this.$raise(error)},$Compiler_marshal_dump$36.$$arity=-2),Opal.def($Compiler_marshal_load$37,"$re_raise_with_location",$Compiler_re_raise_with_location$17=function(){var $writer,$iter=$Compiler_re_raise_with_location$17.$$p,$yield=$iter||nil,error=nil,opal_location=nil,new_error=nil;$iter&&($Compiler_re_raise_with_location$17.$$p=null);try{return Opal.yieldX($yield,[])}catch($err){if(!Opal.rescue($err,[$$($nesting,"StandardError"),$$$($$$("::","Opal"),"SyntaxError")]))throw $err;error=$err;try{return 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old,$iter=$Compiler_in_case$27.$$p,$yield=$iter||nil;return $iter&&($Compiler_in_case$27.$$p=null),$yield===nil?nil:(old=this.case_stmt,this.case_stmt=$hash2([],{}),Opal.yieldX($yield,[]),this.case_stmt=old)},$Compiler_in_case$27.$$arity=0),Opal.def($Compiler_marshal_load$37,"$in_while?",$Compiler_marshal_dump$36=function(){return this.scope["$in_while?"]()},$Compiler_marshal_dump$36.$$arity=0),Opal.def($Compiler_marshal_load$37,"$process",$Compiler_marshal_dump$36=function(sexp,level){var handler=nil;return null==level&&(level="expr"),$truthy(sexp["$nil?"]())?this.$fragment("",this.$scope()):$truthy(handler=this.$handlers()["$[]"](sexp.$type()))?handler.$new(sexp,level,this).$compile_to_fragments():this.$error("Unsupported sexp: "+sexp.$type())},$Compiler_marshal_dump$36.$$arity=-2),Opal.def($Compiler_marshal_load$37,"$handlers",$Compiler_marshal_dump$36=function(){var self=this,$ret_or_10=nil;return self.handlers=$truthy($ret_or_10=self.handlers)?$ret_or_10:$$$($$$($$($nesting,"Opal"),"Nodes"),"Base").$handlers()},$Compiler_marshal_dump$36.$$arity=0),Opal.def($Compiler_marshal_load$37,"$requires",$Compiler_marshal_dump$36=function(){var self=this,$ret_or_11=nil;return self.requires=$truthy($ret_or_11=self.requires)?$ret_or_11:[]},$Compiler_marshal_dump$36.$$arity=0),Opal.def($Compiler_marshal_load$37,"$required_trees",$Compiler_marshal_dump$36=function(){var self=this,$ret_or_12=nil;return self.required_trees=$truthy($ret_or_12=self.required_trees)?$ret_or_12:[]},$Compiler_marshal_dump$36.$$arity=0),Opal.def($Compiler_marshal_load$37,"$returns",$Compiler_marshal_dump$36=function(sexp){var $a,$b,$$34,$case,when_sexp,then_sexp,body_sexp,resbodies,klass,lvar,body,rescue_sexp,ensure_body,rest,last,cond,true_body,false_body,self=this,else_sexp=nil;return $truthy(sexp)?($case=sexp.$type(),"undef"["$==="]($case)?self.$returns(self.$s("begin",sexp,self.$s("nil"))):"break"["$==="]($case)||"next"["$==="]($case)||"redo"["$==="]($case)||"retry"["$==="]($case)?sexp:"yield"["$==="]($case)?sexp.$updated("returnable_yield",nil):"when"["$==="]($case)?($a=[].concat(Opal.to_a(sexp)),$b=($b=$a.length-1)<0?0:$b,when_sexp=$slice.call($a,0,$b),then_sexp=null==$a[$b]?nil:$a[$b],sexp.$updated(nil,[].concat(Opal.to_a(when_sexp)).concat([self.$returns(then_sexp)]))):"rescue"["$==="]($case)?($a=[].concat(Opal.to_a(sexp)),body_sexp=null==$a[0]?nil:$a[0],$b=($b=$a.length-1)<1?1:$b,resbodies=$slice.call($a,1,$b),else_sexp=null==$a[$b]?nil:$a[$b],resbodies=$send(resbodies,"map",[],(($$34=function(resbody){var self=null==$$34.$$s?this:$$34.$$s;return 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self=this,$ret_or_13=nil,scope=nil;return self.scope["$uses_block!"](),$truthy(self.scope.$block_name())?self.$fragment("("+self.scope.$block_name()+" !== nil)",self.$scope(),sexp):$truthy($truthy($ret_or_13=scope=self.scope.$find_parent_def())?scope.$block_name():$ret_or_13)?self.$fragment("("+scope.$block_name()+" !== nil)",scope,sexp):self.$fragment("false",scope,sexp)},$Compiler_marshal_dump$36.$$arity=1),Opal.def($Compiler_marshal_load$37,"$marshal_dump",$Compiler_marshal_dump$36=function(){var self=this,$ret_or_14=nil;return[self.options,self.option_values,self.source_map=$truthy($ret_or_14=self.source_map)?$ret_or_14:self.$source_map().$cache(),self.magic_comments,self.result,self.required_trees,self.requires]},$Compiler_marshal_dump$36.$$arity=0),Opal.def($Compiler_marshal_load$37,"$marshal_load",$Compiler_marshal_load$37=function($a){var $b=$a,$a=Opal.to_ary($b);return this.options=null==$a[0]?nil:$a[0],this.option_values=null==$a[1]?nil:$a[1],this.source_map=null==$a[2]?nil:$a[2],this.magic_comments=null==$a[3]?nil:$a[3],this.result=null==$a[4]?nil:$a[4],this.required_trees=null==$a[5]?nil:$a[5],this.requires=null==$a[6]?nil:$a[6],$b},$Compiler_marshal_load$37.$$arity=1),nil&&"marshal_load"}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/erb"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send;return Opal.add_stubs(["$require","$compile","$new","$freeze","$fix_quotes","$find_contents","$find_code","$wrap_compiled","$require_erb","$prepared_source","$gsub","$+","$last_match","$=~","$sub"]),self.$require("opal/compiler"),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return function($ERB_compile$1,$parent_nesting){var $ERB_compile$1=$module($ERB_compile$1,"ERB"),$nesting=[$ERB_compile$1].concat($parent_nesting);return Opal.defs($ERB_compile$1,"$compile",$ERB_compile$1=function(source,file_name){return null==file_name&&(file_name="(erb)"),$$($nesting,"Compiler").$new(source,file_name).$compile()},$ERB_compile$1.$$arity=-2),function($Compiler_wrap_compiled$11,$Compiler_find_code$9){var $Compiler_wrap_compiled$11=$klass($Compiler_wrap_compiled$11,null,"Compiler"),$nesting=[$Compiler_wrap_compiled$11].concat($Compiler_find_code$9);return $Compiler_wrap_compiled$11.$$prototype.prepared_source=$Compiler_wrap_compiled$11.$$prototype.source=$Compiler_wrap_compiled$11.$$prototype.file_name=nil,Opal.const_set($nesting[0],"BLOCK_EXPR",/\s+(do|\{)(\s*\|[^|]*\|)?\s*\Z/.$freeze()),Opal.def($Compiler_wrap_compiled$11,"$initialize",$Compiler_find_code$9=function($a,file_name){return 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str=$$($nesting,"Opal")["$coerce_to!"](str,$$($nesting,"String"),"to_str"),options=options&&Opal.hash(options),Opal.Opal.$compile(str,options)}catch(e){if(e.$$class!==Opal.Opal.SyntaxError)throw e;var err=Opal.SyntaxError.$new(e.message);throw err.$set_backtrace(e.$backtrace()),err}},Opal.eval=function(str,options){return eval(Opal.compile(str,options))},"undefined"!=typeof document&&(window.addEventListener?window.addEventListener("DOMContentLoaded",run_ruby_scripts,!1):window.attachEvent("onload",run_ruby_scripts))};
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bs,buffer,bc=0,idx=0,output="";buffer=str.charAt(idx++);~buffer&&(bs=bc%4?64*bs+buffer:buffer,bc++%4)?output+=String.fromCharCode(255&bs>>(-2*bc&6)):0)buffer=chars.indexOf(buffer);return output},$defs(self,"$decode64",(function(string){return decode(string.replace(/\r?\n/g,""))}),1),$defs(self,"$encode64",(function(string){return encode(string).replace(/(.{60})/g,"$1\n").replace(/([^\n])$/g,"$1\n")}),1),$defs(self,"$strict_decode64",(function(string){return decode(string)}),1),$defs(self,"$strict_encode64",(function(string){return encode(string)}),1),$defs(self,"$urlsafe_decode64",(function(string){return decode(string.replace(/\-/g,"+").replace(/_/g,"/"))}),1),$defs(self,"$urlsafe_encode64",(function(string,$kwargs){var padding,str=nil;if(null==$kwargs)$kwargs=$hash2([],{});else if(!$kwargs.$$is_hash)throw Opal.ArgumentError.$new("expected kwargs");return null==(padding=$kwargs.$$smap.padding)&&(padding=!0),str=encode(string).replace(/\+/g,"-").replace(/\//g,"_"),$truthy(padding)||(str=str.$delete("=")),str}),-2)}($nesting[0],$nesting)},Opal.modules["corelib/pack_unpack/format_string_parser"]=function(Opal){Opal.nil;var self,directives,modifiers,$$$=Opal.$$$,$module=Opal.module,$Kernel=Opal.Kernel;return Opal.add_stubs("raise"),self=$module("::","PackUnpack"),directives=["C","S","L","Q","J","c","s","l","q","j","n","N","v","V","U","w","D","d","F","f","E","e","G","g","A","a","Z","B","b","H","h","u","M","m","P","p","@","X","x"],modifiers=["!","_",">","<"],void(self.eachDirectiveAndCount=function(format,callback){var currentDirective,currentCount,currentModifiers,countSpecified;function reset(){currentDirective=null,currentCount=0,currentModifiers=[],countSpecified=!1}function 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$d,$e,self=null==$$1.$$s?this:$$1.$$s,$ret_or_1=nil;for(null==self.racc_state&&(self.racc_state=nil),null==self.racc_read_next&&(self.racc_read_next=nil),null==self.racc_t&&(self.racc_t=nil),null==self.yydebug&&(self.yydebug=nil),null==self.racc_val&&(self.racc_val=nil);$truthy(!0);)for($truthy(i=action_pointer["$[]"](self.racc_state["$[]"](-1)))?($truthy(self.racc_read_next)&&$neqeq(self.racc_t,0)&&($e=self.$next_token(),$d=$to_ary($e),tok=null==$d[0]?nil:$d[0],self.racc_val=null==$d[1]?nil:$d[1],$truthy(tok)?self.racc_t=$truthy($ret_or_1=token_table["$[]"](tok))?$ret_or_1:1:self.racc_t=0,$truthy(self.yydebug)&&self.$racc_read_token(self.racc_t,tok,self.racc_val),self.racc_read_next=!1),i=$rb_plus(i,self.racc_t),$truthy($rb_ge(i,0))&&$truthy(act=action_table["$[]"](i))&&$eqeq(action_check["$[]"](i),self.racc_state["$[]"](-1))||(act=action_default["$[]"](self.racc_state["$[]"](-1)))):act=action_default["$[]"](self.racc_state["$[]"](-1));$truthy(act=self.$_racc_evalact(act,arg)););}),{$$arity:0,$$s:this})}),2),$def(self,"$yyparse",(function(recv,mid){return this.$__send__($$("Racc_YY_Parse_Method"),recv,mid,this.$_racc_setup(),!0)}),2),$def(self,"$_racc_yyparse_rb",(function(recv,mid,arg,c_debug){var $a,action_table=nil,action_check=nil,action_default=nil,action_pointer=nil,token_table=nil,act=nil,i=nil;return $a=$to_ary(arg),action_table=null==$a[0]?nil:$a[0],action_check=null==$a[1]?nil:$a[1],action_default=null==$a[2]?nil:$a[2],action_pointer=null==$a[3]?nil:$a[3],null==$a[4]?nil:$a[4],null==$a[5]?nil:$a[5],null==$a[6]?nil:$a[6],null==$a[7]?nil:$a[7],null==$a[8]?nil:$a[8],null==$a[9]?nil:$a[9],token_table=null==$a[10]?nil:$a[10],null==$a[11]?nil:$a[11],null==$a[12]?nil:$a[12],null==$a[13]?nil:$a[13],this.$_racc_init_sysvars(),act=nil,i=nil,$send(this,"catch",["racc_end_parse"],(function $$2(){var self=null==$$2.$$s?this:$$2.$$s;for(null==self.racc_state&&(self.racc_state=nil);!$truthy(i=action_pointer["$[]"](self.racc_state["$[]"](-1)));)for(;$truthy(act=self.$_racc_evalact(action_default["$[]"](self.racc_state["$[]"](-1)),arg)););return $send(recv,"__send__",[mid],(function $$3(tok,val){var self=null==$$3.$$s?this:$$3.$$s,$ret_or_1=nil,$ret_or_2=nil;for(null==self.racc_t&&(self.racc_t=nil),null==self.racc_state&&(self.racc_state=nil),null==self.racc_read_next&&(self.racc_read_next=nil),null==tok&&(tok=nil),null==val&&(val=nil),$truthy(tok)?self.racc_t=$truthy($ret_or_1=token_table["$[]"](tok))?$ret_or_1:1:self.racc_t=0,self.racc_val=val,self.racc_read_next=!1,i=$rb_plus(i,self.racc_t),$truthy($rb_ge(i,0))&&$truthy(act=action_table["$[]"](i))&&$eqeq(action_check["$[]"](i),self.racc_state["$[]"](-1))||(act=action_default["$[]"](self.racc_state["$[]"](-1)));$truthy(act=self.$_racc_evalact(act,arg)););for(;$truthy($truthy($ret_or_1=$truthy($ret_or_2=(i=action_pointer["$[]"](self.racc_state["$[]"](-1)))["$!"]())?$ret_or_2:self.racc_read_next["$!"]())?$ret_or_1:self.racc_t["$=="](0));)for($truthy(i)&&$truthy(i=$rb_plus(i,self.racc_t))&&$truthy($rb_ge(i,0))&&$truthy(act=action_table["$[]"](i))&&$eqeq(action_check["$[]"](i),self.racc_state["$[]"](-1))||(act=action_default["$[]"](self.racc_state["$[]"](-1)));$truthy(act=self.$_racc_evalact(act,arg)););}),{$$arity:2,$$s:self})}),{$$arity:0,$$s:this})}),4),$def(self,"$_racc_evalact",(function(act,arg){var $a,shift_n,action_table=nil,action_check=nil,action_pointer=nil,reduce_n=nil,code=nil,$ret_or_1=nil,i=nil;if(action_table=null==($a=$to_ary(arg))[0]?nil:$a[0],action_check=null==$a[1]?nil:$a[1],null==$a[2]?nil:$a[2],action_pointer=null==$a[3]?nil:$a[3],null==$a[4]?nil:$a[4],null==$a[5]?nil:$a[5],null==$a[6]?nil:$a[6],null==$a[7]?nil:$a[7],null==$a[8]?nil:$a[8],null==$a[9]?nil:$a[9],null==$a[10]?nil:$a[10],shift_n=null==$a[11]?nil:$a[11],reduce_n=null==$a[12]?nil:$a[12],null==$a[13]?nil:$a[13],null==$a[14]?nil:$a[14],$truthy($rb_gt(act,0))&&$truthy($rb_lt(act,shift_n)))$truthy($rb_gt(this.racc_error_status,0))&&($eqeq(this.racc_t,1)||(this.racc_error_status=$rb_minus(this.racc_error_status,1))),this.racc_vstack.$push(this.racc_val),this.racc_state.$push(act),this.racc_read_next=!0,$truthy(this.yydebug)&&(this.racc_tstack.$push(this.racc_t),this.$racc_shift(this.racc_t,this.racc_tstack,this.racc_vstack));else if($truthy($rb_lt(act,0))&&$truthy($rb_gt(act,reduce_n["$-@"]()))){if(code=$send(this,"catch",["racc_jump"],(function $$4(){var self=null==$$4.$$s?this:$$4.$$s;return null==self.racc_state&&(self.racc_state=nil),self.racc_state.$push(self.$_racc_do_reduce(arg,act)),!1}),{$$arity:0,$$s:this}),$truthy(code)){if($eqeqeq(1,$ret_or_1=code))return this.racc_user_yyerror=!0,reduce_n["$-@"]();if($eqeqeq(2,$ret_or_1))return shift_n;this.$raise("[Racc Bug] unknown jump code")}}else if($eqeq(act,shift_n))$truthy(this.yydebug)&&this.$racc_accept(),this.$throw("racc_end_parse",this.racc_vstack["$[]"](0));else{if($eqeq(act,reduce_n["$-@"]())){for($eqeqeq(0,$ret_or_1=this.racc_error_status)?$truthy(arg["$[]"](21))||this.$on_error(this.racc_t,this.racc_val,this.racc_vstack):$eqeqeq(3,$ret_or_1)&&($eqeq(this.racc_t,0)&&this.$throw("racc_end_parse",nil),this.racc_read_next=!0),this.racc_user_yyerror=!1,this.racc_error_status=3;$truthy(!0)&&!($truthy(i=action_pointer["$[]"](this.racc_state["$[]"](-1)))&&(i=$rb_plus(i,1),$truthy($rb_ge(i,0))&&$truthy(act=action_table["$[]"](i))&&$eqeq(action_check["$[]"](i),this.racc_state["$[]"](-1))));)$truthy($rb_le(this.racc_state.$size(),1))&&this.$throw("racc_end_parse",nil),this.racc_state.$pop(),this.racc_vstack.$pop(),$truthy(this.yydebug)&&(this.racc_tstack.$pop(),this.$racc_e_pop(this.racc_state,this.racc_tstack,this.racc_vstack));return act}this.$raise("[Racc Bug] unknown action "+act.$inspect())}return $truthy(this.yydebug)&&this.$racc_next_state(this.racc_state["$[]"](-1),this.racc_state),nil}),2),$def(self,"$_racc_do_reduce",(function(arg,act){var $a,nt_base,use_result,reduce_to,method_id,void_array,k1,goto_table=nil,goto_check=nil,goto_default=nil,goto_pointer=nil,reduce_table=nil,state=nil,vstack=nil,tstack=nil,i=nil,len=nil,tmp_t=nil,tmp_v=nil,$writer=nil,curstate=nil;return null==($a=$to_ary(arg))[0]?nil:$a[0],null==$a[1]?nil:$a[1],null==$a[2]?nil:$a[2],null==$a[3]?nil:$a[3],goto_table=null==$a[4]?nil:$a[4],goto_check=null==$a[5]?nil:$a[5],goto_default=null==$a[6]?nil:$a[6],goto_pointer=null==$a[7]?nil:$a[7],nt_base=null==$a[8]?nil:$a[8],reduce_table=null==$a[9]?nil:$a[9],null==$a[10]?nil:$a[10],null==$a[11]?nil:$a[11],null==$a[12]?nil:$a[12],use_result=null==$a[13]?nil:$a[13],state=this.racc_state,vstack=this.racc_vstack,tstack=this.racc_tstack,i=$rb_times(act,-3),len=reduce_table["$[]"](i),reduce_to=reduce_table["$[]"]($rb_plus(i,1)),method_id=reduce_table["$[]"]($rb_plus(i,2)),void_array=[],$truthy(this.yydebug)&&(tmp_t=tstack["$[]"](len["$-@"](),len)),tmp_v=vstack["$[]"](len["$-@"](),len),$truthy(this.yydebug)&&($writer=[len["$-@"](),len,void_array],$send(tstack,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]),$writer=[len["$-@"](),len,void_array],$send(vstack,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],$writer=[len["$-@"](),len,void_array],$send(state,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],$truthy(use_result)?vstack.$push(this.$__send__(method_id,tmp_v,vstack,tmp_v["$[]"](0))):vstack.$push(this.$__send__(method_id,tmp_v,vstack)),tstack.$push(reduce_to),$truthy(this.yydebug)&&this.$racc_reduce(tmp_t,reduce_to,tstack,vstack),k1=$rb_minus(reduce_to,nt_base),$truthy(i=goto_pointer["$[]"](k1))&&(i=$rb_plus(i,state["$[]"](-1)),$truthy($rb_ge(i,0))&&$truthy(curstate=goto_table["$[]"](i))&&$eqeq(goto_check["$[]"](i),k1))?curstate:goto_default["$[]"](k1)}),2),$def(self,"$on_error",(function(t,val,vstack){var $ret_or_1;return this.$raise($$("ParseError"),this.$sprintf("\nparse error on value %s (%s)",val.$inspect(),$truthy($ret_or_1=this.$token_to_str(t))?$ret_or_1:"?"))}),3),$def(self,"$yyerror",(function(){return this.$throw("racc_jump",1)}),0),$def(self,"$yyaccept",(function(){return this.$throw("racc_jump",2)}),0),$def(self,"$yyerrok",(function(){return this.racc_error_status=0}),0),$def(self,"$racc_read_token",(function(t,tok,val){return this.racc_debug_out.$print("read    "),this.racc_debug_out.$print(tok.$inspect(),"(",this.$racc_token2str(t),") "),this.racc_debug_out.$puts(val.$inspect()),this.racc_debug_out.$puts()}),3),$def(self,"$racc_shift",(function(tok,tstack,vstack){return this.racc_debug_out.$puts("shift   "+this.$racc_token2str(tok)),this.$racc_print_stacks(tstack,vstack),this.racc_debug_out.$puts()}),3),$def(self,"$racc_reduce",(function(toks,sim,tstack,vstack){var out=nil;return(out=this.racc_debug_out).$print("reduce "),$truthy(toks["$empty?"]())?out.$print(" <none>"):$send(toks,"each",[],(function $$5(t){var self=null==$$5.$$s?this:$$5.$$s;return null==t&&(t=nil),out.$print(" ",self.$racc_token2str(t))}),{$$arity:1,$$s:this}),out.$puts(" --\x3e "+this.$racc_token2str(sim)),this.$racc_print_stacks(tstack,vstack),this.racc_debug_out.$puts()}),4),$def(self,"$racc_accept",(function(){return this.racc_debug_out.$puts("accept"),this.racc_debug_out.$puts()}),0),$def(self,"$racc_e_pop",(function(state,tstack,vstack){return this.racc_debug_out.$puts("error recovering mode: pop token"),this.$racc_print_states(state),this.$racc_print_stacks(tstack,vstack),this.racc_debug_out.$puts()}),3),$def(self,"$racc_next_state",(function(curstate,state){return this.racc_debug_out.$puts("goto    "+curstate),this.$racc_print_states(state),this.racc_debug_out.$puts()}),2),$def(self,"$racc_print_stacks",(function(t,v){var out=nil;return(out=this.racc_debug_out).$print("        ["),$send(t,"each_index",[],(function $$6(i){var self=null==$$6.$$s?this:$$6.$$s;return null==i&&(i=nil),out.$print(" (",self.$racc_token2str(t["$[]"](i))," ",v["$[]"](i).$inspect(),")")}),{$$arity:1,$$s:this}),out.$puts(" ]")}),2),$def(self,"$racc_print_states",(function(s){var out=nil;return(out=this.racc_debug_out).$print("        ["),$send(s,"each",[],(function(st){return null==st&&(st=nil),out.$print(" ",st)}),1),out.$puts(" ]")}),1),$def(self,"$racc_token2str",(function(tok){var $ret_or_1;return $truthy($ret_or_1=$$$(this.$class(),"Racc_token_to_s_table")["$[]"](tok))?$ret_or_1:this.$raise("[Racc Bug] can't convert token "+tok+" to string")}),1),$def(self,"$token_to_str",(function(t){return $$$(this.$class(),"Racc_token_to_s_table")["$[]"](t)}),1)}($nesting[0],0,$nesting)}($nesting[0],$nesting)},Opal.modules["parser/messages"]=function(Opal){var $nesting=[],$module=(Opal.nil,Opal.module),$const_set=Opal.const_set,$hash2=Opal.hash2,$truthy=Opal.truthy,$eqeqeq=Opal.eqeqeq,$defs=Opal.defs;return Opal.add_stubs("freeze,[],empty?,===,format"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return $const_set($nesting[0],"MESSAGES",$hash2(["unicode_point_too_large","invalid_escape","incomplete_escape","invalid_hex_escape","invalid_unicode_escape","unterminated_unicode","escape_eof","string_eof","regexp_options","cvar_name","ivar_name","trailing_in_number","empty_numeric","invalid_octal","no_dot_digit_literal","bare_backslash","unexpected","embedded_document","heredoc_id_has_newline","heredoc_id_ends_with_nl","unterminated_heredoc_id","invalid_escape_use","ambiguous_literal","ambiguous_regexp","ambiguous_prefix","triple_dot_at_eol","nth_ref_alias","begin_in_method","backref_assignment","invalid_assignment","module_name_const","unexpected_token","argument_const","argument_ivar","argument_gvar","argument_cvar","duplicate_argument","empty_symbol","odd_hash","singleton_literal","dynamic_const","const_reassignment","module_in_def","class_in_def","unexpected_percent_str","block_and_blockarg","masgn_as_condition","block_given_to_yield","invalid_regexp","invalid_return","csend_in_lhs_of_masgn","cant_assign_to_numparam","reserved_for_numparam","ordinary_param_defined","numparam_used_in_outer_scope","circular_argument_reference","pm_interp_in_var_name","lvar_name","undefined_lvar","duplicate_variable_name","duplicate_pattern_key","endless_setter","invalid_id_to_get","forward_arg_after_restarg","no_anonymous_blockarg","useless_else","duplicate_hash_key","invalid_encoding","invalid_action","clobbered","different_replacements","swallowed_insertions","swallowed_insertions_conflict","crossing_deletions","crossing_deletions_conflict","crossing_insertions","crossing_insertions_conflict"],{unicode_point_too_large:"invalid Unicode codepoint (too large)",invalid_escape:"invalid escape character syntax",incomplete_escape:"incomplete character syntax",invalid_hex_escape:"invalid hex escape",invalid_unicode_escape:"invalid Unicode escape",unterminated_unicode:"unterminated Unicode escape",escape_eof:"escape sequence meets end of file",string_eof:"unterminated string meets end of file",regexp_options:"unknown regexp options: %{options}",cvar_name:"`%{name}' is not allowed as a class variable name",ivar_name:"`%{name}' is not allowed as an instance variable name",trailing_in_number:"trailing `%{character}' in number",empty_numeric:"numeric literal without digits",invalid_octal:"invalid octal digit",no_dot_digit_literal:"no .<digit> floating literal anymore; put 0 before dot",bare_backslash:"bare backslash only allowed before newline",unexpected:"unexpected `%{character}'",embedded_document:"embedded document meets end of file (and they embark on a romantic journey)",heredoc_id_has_newline:"here document identifier across newlines, never match",heredoc_id_ends_with_nl:"here document identifier ends with a newline",unterminated_heredoc_id:"unterminated heredoc id",invalid_escape_use:"invalid character syntax; use ?%{escape}",ambiguous_literal:"ambiguous first argument; put parentheses or a space even after the operator",ambiguous_regexp:"ambiguity between regexp and two divisions: wrap regexp in parentheses or add a space after `/' operator",ambiguous_prefix:"`%{prefix}' interpreted as argument prefix",triple_dot_at_eol:"... at EOL, should be parenthesized",nth_ref_alias:"cannot define an alias for a back-reference variable",begin_in_method:"BEGIN in method",backref_assignment:"cannot assign to a back-reference variable",invalid_assignment:"cannot assign to a keyword",module_name_const:"class or module name must be a constant literal",unexpected_token:"unexpected token %{token}",argument_const:"formal argument cannot be a constant",argument_ivar:"formal argument cannot be an instance variable",argument_gvar:"formal argument cannot be a global variable",argument_cvar:"formal argument cannot be a class variable",duplicate_argument:"duplicate argument name",empty_symbol:"empty symbol literal",odd_hash:"odd number of entries for a hash",singleton_literal:"cannot define a singleton method for a literal",dynamic_const:"dynamic constant assignment",const_reassignment:"constant re-assignment",module_in_def:"module definition in method body",class_in_def:"class definition in method body",unexpected_percent_str:"%{type}: unknown type of percent-literal",block_and_blockarg:"both block argument and literal block are passed",masgn_as_condition:"multiple assignment in conditional context",block_given_to_yield:"block given to yield",invalid_regexp:"%{message}",invalid_return:"Invalid return in class/module body",csend_in_lhs_of_masgn:"&. inside multiple assignment destination",cant_assign_to_numparam:"cannot assign to numbered parameter %{name}",reserved_for_numparam:"%{name} is reserved for numbered parameter",ordinary_param_defined:"ordinary parameter is defined",numparam_used_in_outer_scope:"numbered parameter is already used in an outer scope",circular_argument_reference:"circular argument reference %{var_name}",pm_interp_in_var_name:"symbol literal with interpolation is not allowed",lvar_name:"`%{name}' is not allowed as a local variable name",undefined_lvar:"no such local variable: `%{name}'",duplicate_variable_name:"duplicate variable name %{name}",duplicate_pattern_key:"duplicate hash pattern key %{name}",endless_setter:"setter method cannot be defined in an endless method definition",invalid_id_to_get:"identifier %{identifier} is not valid to get",forward_arg_after_restarg:"... after rest argument",no_anonymous_blockarg:"no anonymous block parameter",useless_else:"else without rescue is useless",duplicate_hash_key:"key is duplicated and overwritten",invalid_encoding:"literal contains escape sequences incompatible with UTF-8",invalid_action:"cannot %{action}",clobbered:"clobbered by: %{action}",different_replacements:"different replacements: %{replacement} vs %{other_replacement}",swallowed_insertions:"this replacement:",swallowed_insertions_conflict:"swallows some inner rewriting actions:",crossing_deletions:"the deletion of:",crossing_deletions_conflict:"is crossing:",crossing_insertions:"the rewriting action on:",crossing_insertions_conflict:"is crossing that on:"}).$freeze()),function($base,$parent_nesting){var self=$module($base,"Messages"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return $defs(self,"$compile",(function(reason,arguments$){var template;return template=$$("MESSAGES")["$[]"](reason),$eqeqeq($$("Hash"),arguments$)&&$truthy(arguments$["$empty?"]())?template:this.$format(template,arguments$)}),2)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/deprecation"]=function(Opal){var 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$nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Source")].concat($parent_nesting);return function($base,$super,$parent_nesting){var self=$klass($base,null,"Comment"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return self.$$prototype.location=nil,self.$attr_reader("text"),self.$attr_reader("location"),self.$alias_method("loc","location"),$defs(self,"$associate",(function(ast,comments){return $$("Associator").$new(ast,comments).$associate()}),2),$defs(self,"$associate_locations",(function(ast,comments){return $$("Associator").$new(ast,comments).$associate_locations()}),2),$defs(self,"$associate_by_identity",(function(ast,comments){return $$("Associator").$new(ast,comments).$associate_by_identity()}),2),$def(self,"$initialize",(function(range){return 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$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$module=Opal.module,$klass=Opal.klass,$def=Opal.def,$const_set=Opal.const_set,$truthy=Opal.truthy,$send=Opal.send,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$eqeq=Opal.eqeq,$rb_le=Opal.rb_le,$rb_plus=Opal.rb_plus,$not=Opal.not;return Opal.add_stubs("attr_accessor,do_associate,private,freeze,[],include?,type,sort_by,compact,children,begin_pos,expression,loc,select,is_a?,new,[]=,-,==,compare_by_identity,advance_comment,advance_through_directives,visit,process_leading_comments,location,<=,line,last_line,each,children_in_source_order,process_trailing_comments,current_comment_before?,associate_and_advance_comment,current_comment_before_end?,current_comment_decorates?,+,!,end_pos,<<,start_with?,text,=~"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Source")].concat($parent_nesting);return function($base,$super,$parent_nesting){var 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this.$process_leading_comments(node),$truthy(this.current_comment)?(node_loc=node.$location(),$truthy($rb_le(this.current_comment.$location().$line(),node_loc.$last_line()))||$truthy(node_loc["$is_a?"]($$$($$("Map"),"Heredoc")))?($send(this.$children_in_source_order(node),"each",[],(function $$4(child){return null==child&&(child=nil),(null==$$4.$$s?this:$$4.$$s).$visit(child)}),{$$arity:1,$$s:this}),this.$process_trailing_comments(node)):nil):nil}),1),$def(self,"$process_leading_comments",(function(node){if($eqeq(node.$type(),"begin"))return nil;for(;$truthy(this["$current_comment_before?"](node));)this.$associate_and_advance_comment(node)}),1),$def(self,"$process_trailing_comments",(function(node){for(;$truthy(this["$current_comment_before_end?"](node));)this.$associate_and_advance_comment(node);for(;$truthy(this["$current_comment_decorates?"](node));)this.$associate_and_advance_comment(node)}),1),$def(self,"$advance_comment",(function(){return 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$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$module=Opal.module,$klass=Opal.klass,$send=Opal.send,$gvars=Opal.gvars,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$def=Opal.def,$rb_plus=Opal.rb_plus,$truthy=Opal.truthy,$not=Opal.not,$neqeq=Opal.neqeq,$rb_le=Opal.rb_le,$rb_ge=Opal.rb_ge,$rb_lt=Opal.rb_lt,$hash2=Opal.hash2,$const_set=Opal.const_set;return 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null==a&&(a=nil),$truthy($ret_or_1=a.$range()["$overlaps?"](range))?self["$replace_compatible_with_insertion?"](a,action)["$!"]():$ret_or_1}),{$$arity:1,$$s:this}),$truthy(conflicting)&&this.$raise_clobber_error(action,[conflicting]),this["$merge_actions!"](action,adjacent)):this.$active_queue()["$<<"](action)}else $truthy(insertions=this["$adjacent_insertions?"](range))&&$send(insertions,"each",[],(function $$4(insertion){var self=null==$$4.$$s?this:$$4.$$s;return null==insertion&&(insertion=nil),$truthy(range["$overlaps?"](insertion.$range()))&&$not(self["$replace_compatible_with_insertion?"](action,insertion))?self.$raise_clobber_error(action,[insertion]):(action=self.$merge_actions(action,[insertion]),self.$active_queue().$delete(insertion))}),{$$arity:1,$$s:this}),$truthy(adjacent=this["$adjacent_updates?"](range))?$truthy(this["$can_merge?"](action,adjacent))?(this.$record_replace(range),this["$merge_actions!"](action,adjacent)):this.$raise_clobber_error(action,adjacent):(this.$record_replace(range),this.$active_queue()["$<<"](action));return this}),1),$def(self,"$record_insertion",(function(range){var $writer;return $writer=[this.$active_insertions()["$|"](1["$<<"](range.$begin_pos()))],$send(this,"active_insertions=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]}),1),$def(self,"$record_replace",(function(range){var $writer;return $writer=[this.$active_clobber()["$|"](this.$clobbered_position_mask(range))],$send(this,"active_clobber=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]}),1),$def(self,"$clobbered_position_mask",(function(range){return $rb_minus(1["$<<"](range.$size()),1)["$<<"](range.$begin_pos())}),1),$def(self,"$adjacent_position_mask",(function(range){return $rb_minus(1["$<<"]($rb_plus(range.$size(),2)),1)["$<<"]($rb_minus(range.$begin_pos(),1))}),1),$def(self,"$adjacent_insertion_mask",(function(range){return $rb_minus(1["$<<"]($rb_plus(range.$size(),1)),1)["$<<"](range.$begin_pos())}),1),$def(self,"$clobbered_insertion?",(function(insertion){var insertion_pos;return insertion_pos=insertion.$begin_pos(),$neqeq(this.$active_insertions()["$&"](1["$<<"](insertion_pos)),0)?$send(this.$active_queue(),"find",[],(function(a){var $ret_or_1;return 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null==act&&(act=nil),$not(prev_act)||$truthy(act.$range()["$disjoint?"](prev_act.$range()))?result["$<<"](act.$replacement()):(prev_end=[$rb_plus(prev_act.$range().$begin_pos(),prev_act.$replacement().$length()),prev_act.$range().$end_pos()].$max(),offset=$rb_minus(prev_end,act.$range().$begin_pos()),$truthy($rb_lt(offset,act.$replacement().$size()))&&result["$<<"](act.$replacement()["$[]"](Opal.Range.$new(offset,-1,!1)))),prev_act=act}),1),result}),1),$def(self,"$replace_actions",(function(old,updated){return $send(old,"each",[],(function $$18(act){return null==act&&(act=nil),(null==$$18.$$s?this:$$18.$$s).$active_queue().$delete(act)}),{$$arity:1,$$s:this}),this.$active_queue()["$<<"](updated)}),2),$def(self,"$raise_clobber_error",(function(action,existing){var diagnostic=nil;return diagnostic=$$("Diagnostic").$new("error","invalid_action",$hash2(["action"],{action:action}),action.$range()),this.diagnostics.$process(diagnostic),diagnostic=$$("Diagnostic").$new("note","clobbered",$hash2(["action"],{action:existing["$[]"](0)}),existing["$[]"](0).$range()),this.diagnostics.$process(diagnostic),this.$raise($$("ClobberingError"),"Parser::Source::Rewriter detected clobbering")}),2),$def(self,"$in_transaction?",(function(){return this.pending_queue["$nil?"]()["$!"]()}),0),$def(self,"$active_queue",(function(){var $ret_or_1;return $truthy($ret_or_1=this.pending_queue)?$ret_or_1:this.queue}),0),$def(self,"$active_clobber",(function(){var $ret_or_1;return $truthy($ret_or_1=this.pending_clobber)?$ret_or_1:this.clobber}),0),$def(self,"$active_insertions",(function(){var $ret_or_1;return $truthy($ret_or_1=this.pending_insertions)?$ret_or_1:this.insertions}),0),$def(self,"$active_clobber=",(function(value){return 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Opal.add_stubs("include,attr_reader,alias_method,freeze,<=>,begin_pos,range,zero?,order,empty?,==,length,inspect"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Source")].concat($parent_nesting);return function($base,$super,$parent_nesting){var self=$klass($base,null,"Action"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;return $proto.replacement=$proto.range=nil,self.$include($$("Comparable")),self.$attr_reader("range","replacement","allow_multiple_insertions","order"),self.$alias_method("allow_multiple_insertions?","allow_multiple_insertions"),$def(self,"$initialize",(function(range,replacement,allow_multiple_insertions,order){return null==replacement&&(replacement=""),null==allow_multiple_insertions&&(allow_multiple_insertions=!1),null==order&&(order=0),this.range=range,this.replacement=replacement,this.allow_multiple_insertions=allow_multiple_insertions,this.order=order,this.$freeze()}),-2),$def(self,"$<=>",(function(other){var result=nil;return result=this.$range().$begin_pos()["$<=>"](other.$range().$begin_pos()),$truthy(result["$zero?"]())?this.$order()["$<=>"](other.$order()):result}),1),$def(self,"$to_s",(function(){return $eqeq(this.range.$length(),0)&&$truthy(this.replacement["$empty?"]())?"do nothing":$eqeq(this.range.$length(),0)?"insert "+this.replacement.$inspect():$truthy(this.replacement["$empty?"]())?"remove "+this.range.$length()+" character(s)":"replace "+this.range.$length()+" character(s) with "+this.replacement.$inspect()}),0)}(Opal.$r($nesting)("Rewriter"),0,$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/tree_rewriter"]=function(Opal){var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$module=Opal.module,$klass=Opal.klass,$hash2=Opal.hash2,$lambda=Opal.lambda,$gvars=Opal.gvars,$send=Opal.send,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$def=Opal.def,$eqeq=Opal.eqeq,$truthy=Opal.truthy,$rb_plus=Opal.rb_plus,$const_set=Opal.const_set,$eqeqeq=Opal.eqeqeq,$range=Opal.range,$to_ary=Opal.to_ary,$rb_gt=(Opal.hash,Opal.rb_gt),$rb_lt=Opal.rb_lt,$slice=Opal.slice;return Opal.add_stubs("attr_reader,new,puts,render,consumer=,-,freeze,check_policy_validity,method,adjust,source_range,empty?,==,source_buffer,raise,combine,action_root,merge!,dup,contract,+,begin_pos,range,end_pos,check_range_validity,moved,to_s,replace,wrap,source,each,ordered_replacements,<<,[],length,join,nested_actions,class,name,action_summary,warn_of_deprecation,insert_before,insert_after,extend,protected,private,as_replacements,===,size,first,map,to_range,inspect,values,>,<,trigger_policy,process"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Source")].concat($parent_nesting);return function($base,$super,$parent_nesting){var self=$klass($base,null,"TreeRewriter"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;return $proto.diagnostics=$proto.source_buffer=$proto.enforcer=$proto.action_root=$proto.in_transaction=$proto.policy=nil,self.$attr_reader("source_buffer"),self.$attr_reader("diagnostics"),$def(self,"$initialize",(function(source_buffer,$kwargs){var crossing_deletions,different_replacements,swallowed_insertions,$writer,all_encompassing_range;if(null==$kwargs)$kwargs=$hash2([],{});else if(!$kwargs.$$is_hash)throw Opal.ArgumentError.$new("expected kwargs");return null==(crossing_deletions=$kwargs.$$smap.crossing_deletions)&&(crossing_deletions="accept"),null==(different_replacements=$kwargs.$$smap.different_replacements)&&(different_replacements="accept"),null==(swallowed_insertions=$kwargs.$$smap.swallowed_insertions)&&(swallowed_insertions="accept"),this.diagnostics=$$$($$("Diagnostic"),"Engine").$new(),$writer=[$lambda((function(diag){return 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action;return range=this.$check_range_validity(range),action=$$$($$("TreeRewriter"),"Action").$new(range,this.enforcer,Opal.to_hash(attributes)),this.action_root=this.action_root.$combine(action),this}),2),$def(self,"$check_range_validity",(function(range){return($truthy($rb_lt(range.$begin_pos(),0))||$truthy($rb_gt(range.$end_pos(),this.source_buffer.$source().$size())))&&this.$raise($$("IndexError"),"The range "+range.$to_range()+" is outside the bounds of the source"),range}),1),$def(self,"$enforce_policy",(function $$enforce_policy(event){var values,$yield=$$enforce_policy.$$p||nil;return delete $$enforce_policy.$$p,$eqeq(this.policy["$[]"](event),"accept")?nil:$truthy(values=Opal.yieldX($yield,[]))?this.$trigger_policy(event,Opal.to_hash(values)):nil}),1),$const_set($nesting[0],"POLICY_TO_LEVEL",$hash2(["warn","raise"],{warn:"warning",raise:"error"}).$freeze()),$def(self,"$trigger_policy",(function(event,$kwargs){var 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Opal.add_stubs("attr_reader,freeze,empty?,do_combine,==,<<,begin,concat,flat_map,to_proc,end,!,insert_before,insert_after,replacement,raise,insertion?,with,begin_pos,range,first,children,end_pos,last,new,+,map,moved,protected,swallow,class,merge,place_in_hierarchy,analyse_hierarchy,[],fuse_deletions,combine_children,inject,size,bsearch,bsearch_child_index,>,-,>=,===,<=>,<=,check_fusible,<,shift,pop,compact!,each,call,call_enforcer_for_merge,!=,select"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Source")].concat($parent_nesting);return function($base,$super){var self=$klass($base,null,"Action"),$proto=self.$$prototype;return $proto.insert_before=$proto.insert_after=$proto.children=$proto.replacement=$proto.range=$proto.enforcer=nil,self.$attr_reader("range","replacement","insert_before","insert_after"),$def(self,"$initialize",(function(range,enforcer,$kwargs){var 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actions=[],($not(this.insert_before["$empty?"]())||$not(this.insert_after["$empty?"]()))&&actions["$<<"](["wrap",this.range,this.insert_before,this.insert_after]),$truthy(this.replacement)&&actions["$<<"](["replace",this.range,this.replacement]),actions.$concat($send(this.children,"flat_map",[],"nested_actions".$to_proc()))}),0),$def(self,"$insertion?",(function(){var $ret_or_1,$ret_or_2=nil;return $truthy($ret_or_1=$truthy($ret_or_2=this.$insert_before()["$empty?"]()["$!"]())?$ret_or_2:this.$insert_after()["$empty?"]()["$!"]())?$ret_or_1:$truthy($ret_or_2=this.$replacement())?this.$replacement()["$empty?"]()["$!"]():$ret_or_2}),0),$def(self,"$contract",(function(){var range;return $truthy(this["$empty?"]())&&this.$raise("Empty actions can not be 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null==child&&(child=nil),$rb_ge(child.$range().$begin_pos(),r.$end_pos())}),1),center=$rb_minus(right_index,left_index),$eqeqeq(0,$ret_or_1=center)||($eqeqeq(-1,$ret_or_1)?(left_index=$rb_minus(left_index,1),right_index=$rb_plus(right_index,1),parent=this.children["$[]"](left_index)):(overlap_left=this.children["$[]"](left_index).$range().$begin_pos()["$<=>"](r.$begin_pos()),overlap_right=this.children["$[]"]($rb_minus(right_index,1)).$range().$end_pos()["$<=>"](r.$end_pos()),$eqeq(center,1)&&$truthy($rb_le(overlap_left,0))&&$truthy($rb_ge(overlap_right,0))?parent=this.children["$[]"](left_index):(contained=this.children["$[]"](Opal.Range.$new(left_index,right_index,!0)),fusible=this.$check_fusible(action,$truthy($rb_lt(overlap_left,0))?contained.$shift():nil,$truthy($rb_gt(overlap_right,0))?contained.$pop():nil)))),$hash2(["parent","sibbling_left","sibbling_right","fusible","child"],{parent:parent,sibbling_left:this.children["$[]"](Opal.Range.$new(0,left_index,!0)),sibbling_right:this.children["$[]"](Opal.Range.$new(right_index,this.children.$size(),!0)),fusible:fusible,child:contained})}),1),$def(self,"$check_fusible",(function(action,$a){var fusible,self=this;return(fusible=Opal.slice.call(arguments,1))["$compact!"](),$truthy(fusible["$empty?"]())?nil:($send(fusible,"each",[],(function $$9(child){var kind,self=null==$$9.$$s?this:$$9.$$s;return null==self.enforcer&&(self.enforcer=nil),null==child&&(child=nil),kind=$truthy(action["$insertion?"]())||$truthy(child["$insertion?"]())?"crossing_insertions":"crossing_deletions",$send(self.enforcer,"call",[kind],(function(){return $hash2(["range","conflict"],{range:action.$range(),conflict:child.$range()})}),0)}),{$$arity:1,$$s:self}),fusible)}),-2),$def(self,"$merge",(function(action){var $ret_or_1;return this.$call_enforcer_for_merge(action),this.$with($hash2(["insert_before","replacement","insert_after"],{insert_before:""+action.$insert_before()+this.$insert_before(),replacement:$truthy($ret_or_1=action.$replacement())?$ret_or_1:this.replacement,insert_after:""+this.$insert_after()+action.$insert_after()})).$combine_children(action.$children())}),1),$def(self,"$call_enforcer_for_merge",(function(action){return $send(this.enforcer,"call",["different_replacements"],(function $$11(){var self=null==$$11.$$s?this:$$11.$$s;return null==self.replacement&&(self.replacement=nil),null==self.range&&(self.range=nil),$truthy(self.replacement)&&$truthy(action.$replacement())&&$neqeq(self.replacement,action.$replacement())?$hash2(["range","replacement","other_replacement"],{range:self.range,replacement:action.$replacement(),other_replacement:self.replacement}):nil}),{$$arity:0,$$s:this})}),1),$def(self,"$swallow",(function(children){return $send(this.enforcer,"call",["swallowed_insertions"],(function $$12(){var self=null==$$12.$$s?this:$$12.$$s,insertions=nil;return null==self.range&&(self.range=nil),insertions=$send(children,"select",[],"insertion?".$to_proc()),$truthy(insertions["$empty?"]())?nil:$hash2(["range","conflict"],{range:self.range,conflict:$send(insertions,"map",[],"range".$to_proc())})}),{$$arity:0,$$s:this}),[]}),1)}(Opal.$r($nesting)("TreeRewriter"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map"]=function(Opal){var $nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$def=Opal.def,$send2=Opal.send2,$find_super=Opal.find_super,$send=Opal.send,$truthy=Opal.truthy,$hash2=Opal.hash2,$eqeq=Opal.eqeq,$range=Opal.range,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus;return Opal.add_stubs("attr_reader,freeze,line,alias_method,column,last_line,last_column,with,update_expression,==,class,reduce,map,instance_variables,instance_variable_get,send,inject,to_sym,[],[]=,-,protected,tap,dup,to_proc"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$parent_nesting){return function($base,$super){var self=$klass($base,null,"Map"),$proto=self.$$prototype;return $proto.node=$proto.expression=nil,self.$attr_reader("node"),self.$attr_reader("expression"),$def(self,"$initialize",(function(expression){return this.expression=expression}),1),$def(self,"$initialize_copy",(function $$initialize_copy(other){var $yield=$$initialize_copy.$$p||nil;return delete $$initialize_copy.$$p,$send2(this,$find_super(this,"initialize_copy",$$initialize_copy,!1,!0),"initialize_copy",[other],$yield),this.node=nil}),1),$def(self,"$node=",(function(node){return this.node=node,this.$freeze(),this.node}),1),$def(self,"$line",(function(){return this.expression.$line()}),0),self.$alias_method("first_line","line"),$def(self,"$column",(function(){return this.expression.$column()}),0),$def(self,"$last_line",(function(){return this.expression.$last_line()}),0),$def(self,"$last_column",(function(){return this.expression.$last_column()}),0),$def(self,"$with_expression",(function(expression_l){return $send(this,"with",[],(function(map){return null==map&&(map=nil),map.$update_expression(expression_l)}),1)}),1),$def(self,"$==",(function(other){var $ret_or_1;return $truthy($ret_or_1=other.$class()["$=="](this.$class()))?$send(this.$instance_variables(),"map",[],(function $$4(ivar){return null==ivar&&(ivar=nil),(null==$$4.$$s?this:$$4.$$s).$instance_variable_get(ivar)["$=="](other.$send("instance_variable_get",ivar))}),{$$arity:1,$$s:this}).$reduce("&"):$ret_or_1}),1),$def(self,"$to_hash",(function(){return $send(this.$instance_variables(),"inject",[$hash2([],{})],(function $$5(hash,ivar){var $writer,self=null==$$5.$$s?this:$$5.$$s;return null==hash&&(hash=nil),null==ivar&&(ivar=nil),$eqeq(ivar.$to_sym(),"@node")||($writer=[ivar["$[]"]($range(1,-1,!1)).$to_sym(),self.$instance_variable_get(ivar)],$send(hash,"[]=",$to_a($writer)),$rb_minus($writer.length,1)),hash}),{$$arity:2,$$s:this})}),0),self.$protected(),$def(self,"$with",(function $Map_with$6(){var block=$Map_with$6.$$p||nil;return delete $Map_with$6.$$p,$send(this.$dup(),"tap",[],block.$to_proc())}),0),$def(self,"$update_expression",(function(expression_l){return this.expression=expression_l}),1)}([$module($base,"Source")].concat($parent_nesting)[0])}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/operator"]=function(Opal){var $nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$def=Opal.def;return Opal.add_stubs("attr_reader"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Source")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"Operator");return self.$attr_reader("operator"),$def(self,"$initialize",(function $$initialize(operator,expression){return delete $$initialize.$$p,this.operator=operator,$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[expression],null)}),2)}($$("Map"),$$("Map"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/collection"]=function(Opal){var $nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$def=Opal.def;return Opal.add_stubs("attr_reader"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Source")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"Collection");return self.$attr_reader("begin"),self.$attr_reader("end"),$def(self,"$initialize",(function $$initialize(begin_l,end_l,expression_l){var $a;return delete $$initialize.$$p,$a=[begin_l,end_l],this.begin=$a[0],this.end=$a[1],$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[expression_l],null)}),3)}($$("Map"),$$("Map"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/constant"]=function(Opal){var $nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$def=Opal.def,$send=Opal.send;return Opal.add_stubs("attr_reader,with,update_operator,protected"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Source")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"Constant");return self.$attr_reader("double_colon"),self.$attr_reader("name"),self.$attr_reader("operator"),$def(self,"$initialize",(function $$initialize(double_colon,name,expression){var $a;return delete $$initialize.$$p,$a=[double_colon,name],this.double_colon=$a[0],this.name=$a[1],$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[expression],null)}),3),$def(self,"$with_operator",(function(operator_l){return $send(this,"with",[],(function(map){return null==map&&(map=nil),map.$update_operator(operator_l)}),1)}),1),self.$protected(),$def(self,"$update_operator",(function(operator_l){return this.operator=operator_l}),1)}($$("Map"),$$("Map"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/variable"]=function(Opal){var $nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$def=Opal.def,$send=Opal.send;return Opal.add_stubs("attr_reader,with,update_operator,protected"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Source")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"Variable");return self.$attr_reader("name"),self.$attr_reader("operator"),$def(self,"$initialize",(function $$initialize(name_l,expression_l){return delete $$initialize.$$p,null==expression_l&&(expression_l=name_l),this.name=name_l,$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[expression_l],null)}),-2),$def(self,"$with_operator",(function(operator_l){return $send(this,"with",[],(function(map){return 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$$initialize.$$p,this.keyword=keyword_l,$a=[begin_l,end_l],this.begin=$a[0],this.end=$a[1],$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[expression_l],null)}),4)}($$("Map"),$$("Map"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/definition"]=function(Opal){var $nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$def=Opal.def;return Opal.add_stubs("attr_reader,join"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Source")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"Definition"),$proto=self.$$prototype;return $proto.keyword=$proto.end=nil,self.$attr_reader("keyword"),self.$attr_reader("operator"),self.$attr_reader("name"),self.$attr_reader("end"),$def(self,"$initialize",(function $$initialize(keyword_l,operator_l,name_l,end_l){return delete $$initialize.$$p,this.keyword=keyword_l,this.operator=operator_l,this.name=name_l,this.end=end_l,$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[this.keyword.$join(this.end)],null)}),4)}($$("Map"),$$("Map"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/method_definition"]=function(Opal){var $nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$truthy=Opal.truthy,$def=Opal.def;return Opal.add_stubs("attr_reader,join"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Source")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"MethodDefinition");return self.$$prototype.keyword=nil,self.$attr_reader("keyword"),self.$attr_reader("operator"),self.$attr_reader("name"),self.$attr_reader("end"),self.$attr_reader("assignment"),$def(self,"$initialize",(function $$initialize(keyword_l,operator_l,name_l,end_l,assignment_l,body_l){var $ret_or_1;return delete $$initialize.$$p,this.keyword=keyword_l,this.operator=operator_l,this.name=name_l,this.end=end_l,this.assignment=assignment_l,$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[this.keyword.$join($truthy($ret_or_1=end_l)?$ret_or_1:body_l)],null)}),6)}($$("Map"),$$("Map"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/send"]=function(Opal){var $nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$def=Opal.def,$send=Opal.send;return Opal.add_stubs("attr_reader,with,update_operator,protected"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Source")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"Send");return self.$attr_reader("dot"),self.$attr_reader("selector"),self.$attr_reader("operator"),self.$attr_reader("begin"),self.$attr_reader("end"),$def(self,"$initialize",(function $$initialize(dot_l,selector_l,begin_l,end_l,expression_l){var $a;return delete $$initialize.$$p,this.dot=dot_l,this.selector=selector_l,$a=[begin_l,end_l],this.begin=$a[0],this.end=$a[1],$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[expression_l],null)}),5),$def(self,"$with_operator",(function(operator_l){return $send(this,"with",[],(function(map){return null==map&&(map=nil),map.$update_operator(operator_l)}),1)}),1),self.$protected(),$def(self,"$update_operator",(function(operator_l){return this.operator=operator_l}),1)}($$("Map"),$$("Map"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/index"]=function(Opal){var $nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$def=Opal.def,$send=Opal.send;return Opal.add_stubs("attr_reader,with,update_operator,protected"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Source")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"Index");return self.$attr_reader("begin"),self.$attr_reader("end"),self.$attr_reader("operator"),$def(self,"$initialize",(function $$initialize(begin_l,end_l,expression_l){var $a;return delete $$initialize.$$p,$a=[begin_l,end_l],this.begin=$a[0],this.end=$a[1],this.operator=nil,$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[expression_l],null)}),3),$def(self,"$with_operator",(function(operator_l){return $send(this,"with",[],(function(map){return null==map&&(map=nil),map.$update_operator(operator_l)}),1)}),1),self.$protected(),$def(self,"$update_operator",(function(operator_l){return this.operator=operator_l}),1)}($$("Map"),$$("Map"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/condition"]=function(Opal){var $nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$def=Opal.def;return Opal.add_stubs("attr_reader"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Source")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"Condition");return self.$attr_reader("keyword"),self.$attr_reader("begin"),self.$attr_reader("else"),self.$attr_reader("end"),$def(self,"$initialize",(function $$initialize(keyword_l,begin_l,else_l,end_l,expression_l){var $a;return delete $$initialize.$$p,this.keyword=keyword_l,$a=[begin_l,else_l,end_l],this.begin=$a[0],this.else=$a[1],this.end=$a[2],$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[expression_l],null)}),5)}($$("Map"),$$("Map"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/ternary"]=function(Opal){var $nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$def=Opal.def;return Opal.add_stubs("attr_reader"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Source")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"Ternary");return self.$attr_reader("question"),self.$attr_reader("colon"),$def(self,"$initialize",(function $$initialize(question_l,colon_l,expression_l){var $a;return delete $$initialize.$$p,$a=[question_l,colon_l],this.question=$a[0],this.colon=$a[1],$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[expression_l],null)}),3)}($$("Map"),$$("Map"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/for"]=function(Opal){var $nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$def=Opal.def;return Opal.add_stubs("attr_reader"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Source")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"For");return self.$attr_reader("keyword","in"),self.$attr_reader("begin","end"),$def(self,"$initialize",(function $$initialize(keyword_l,in_l,begin_l,end_l,expression_l){var $a;return delete $$initialize.$$p,$a=[keyword_l,in_l],this.keyword=$a[0],this.in=$a[1],$a=[begin_l,end_l],this.begin=$a[0],this.end=$a[1],$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[expression_l],null)}),5)}($$("Map"),$$("Map"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/rescue_body"]=function(Opal){var $nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$def=Opal.def;return Opal.add_stubs("attr_reader"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Source")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"RescueBody");return self.$attr_reader("keyword"),self.$attr_reader("assoc"),self.$attr_reader("begin"),$def(self,"$initialize",(function $$initialize(keyword_l,assoc_l,begin_l,expression_l){return delete $$initialize.$$p,this.keyword=keyword_l,this.assoc=assoc_l,this.begin=begin_l,$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[expression_l],null)}),4)}($$("Map"),$$("Map"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/heredoc"]=function(Opal){var $nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$def=Opal.def;return Opal.add_stubs("attr_reader"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Source")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"Heredoc");return self.$attr_reader("heredoc_body"),self.$attr_reader("heredoc_end"),$def(self,"$initialize",(function $$initialize(begin_l,body_l,end_l){return delete $$initialize.$$p,this.heredoc_body=body_l,this.heredoc_end=end_l,$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[begin_l],null)}),3)}($$("Map"),$$("Map"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/source/map/objc_kwarg"]=function(Opal){var $nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$def=Opal.def;return Opal.add_stubs("attr_reader"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Source")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"ObjcKwarg");return self.$attr_reader("keyword"),self.$attr_reader("operator"),self.$attr_reader("argument"),$def(self,"$initialize",(function $$initialize(keyword_l,operator_l,argument_l,expression_l){var $a;return delete $$initialize.$$p,$a=[keyword_l,operator_l,argument_l],this.keyword=$a[0],this.operator=$a[1],this.argument=$a[2],$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[expression_l],null)}),4)}($$("Map"),$$("Map"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["parser/syntax_error"]=function(Opal){var $nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$def=Opal.def;return Opal.add_stubs("attr_reader,message"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"SyntaxError");return self.$attr_reader("diagnostic"),$def(self,"$initialize",(function $$initialize(diagnostic){return delete $$initialize.$$p,this.diagnostic=diagnostic,$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[diagnostic.$message()],null)}),1)}($nesting[0],$$("StandardError"))}($nesting[0],$nesting)},Opal.modules["parser/clobbering_error"]=function(Opal){var $nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass;return function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting),$$=Opal.$r($nesting);return $klass($nesting[0],$$("RuntimeError"),"ClobberingError"),nil}($nesting[0],$nesting)},Opal.modules["parser/diagnostic"]=function(Opal){var $nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$const_set=Opal.const_set,$truthy=Opal.truthy,$hash2=Opal.hash2,$def=Opal.def,$eqeq=Opal.eqeq,$rb_plus=Opal.rb_plus,$rb_minus=Opal.rb_minus,$to_ary=Opal.to_ary,$rb_gt=Opal.rb_gt,$rb_times=Opal.rb_times,$send=Opal.send,$to_a=Opal.to_a,$rb_ge=Opal.rb_ge,$not=Opal.not,$neqeq=Opal.neqeq;return Opal.add_stubs("freeze,attr_reader,include?,raise,join,inspect,dup,compile,is?,==,line,last_line,+,message,render_line,first_line_only,last_line_only,-,source_buffer,decompose_position,end_pos,>,private,source_line,*,length,each,line_range,intersect,column_range,size,[]=,>=,!,map,name,!=,resize,=~,source,adjust"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$super,$parent_nesting){var self=$klass($base,null,"Diagnostic"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;return $proto.reason=$proto.arguments=$proto.location=$proto.level=$proto.highlights=nil,$const_set($nesting[0],"LEVELS",["note","warning","error","fatal"].$freeze()),self.$attr_reader("level","reason","arguments"),self.$attr_reader("location","highlights"),$def(self,"$initialize",(function(level,reason,arguments$,location,highlights){var $ret_or_1;return null==highlights&&(highlights=[]),$truthy($$("LEVELS")["$include?"](level))||this.$raise($$("ArgumentError"),"Diagnostic#level must be one of "+$$("LEVELS").$join(", ")+"; "+level.$inspect()+" provided."),$truthy(location)||this.$raise("Expected a location"),this.level=level,this.reason=reason,this.arguments=($truthy($ret_or_1=arguments$)?$ret_or_1:$hash2([],{})).$dup().$freeze(),this.location=location,this.highlights=highlights.$dup().$freeze(),this.$freeze()}),-5),$def(self,"$message",(function(){return $$("Messages").$compile(this.reason,this.arguments)}),0),$def(self,"$render",(function(){var $a,$b,first_line=nil,last_line=nil,num_lines=nil,last_lineno=nil,last_column=nil;return $eqeq(this.location.$line(),this.location.$last_line())||$truthy(this.location["$is?"]("\n"))?$rb_plus([this.location+": "+this.level+": "+this.$message()],this.$render_line(this.location)):(first_line=this.$first_line_only(this.location),last_line=this.$last_line_only(this.location),num_lines=$rb_plus($rb_minus(this.location.$last_line(),this.location.$line()),1),$b=this.location.$source_buffer().$decompose_position(this.location.$end_pos()),last_lineno=null==($a=$to_ary($b))[0]?nil:$a[0],last_column=null==$a[1]?nil:$a[1],$rb_plus($rb_plus([this.location+"-"+last_lineno+":"+last_column+": "+this.level+": "+this.$message()],this.$render_line(first_line,$rb_gt(num_lines,2),!1)),this.$render_line(last_line,!1,!0)))}),0),self.$private(),$def(self,"$render_line",(function(range,ellipsis,range_end){var source_line=nil,highlight_line=nil,$writer=nil;return null==ellipsis&&(ellipsis=!1),null==range_end&&(range_end=!1),source_line=range.$source_line(),highlight_line=$rb_times(" ",source_line.$length()),$send(this.highlights,"each",[],(function(highlight){var line_range,$writer=nil;return null==highlight&&(highlight=nil),line_range=range.$source_buffer().$line_range(range.$line()),$truthy(highlight=highlight.$intersect(line_range))?($writer=[highlight.$column_range(),$rb_times("~",highlight.$size())],$send(highlight_line,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]):nil}),1),$truthy(range["$is?"]("\n"))?highlight_line=$rb_plus(highlight_line,"^"):$not(range_end)&&$truthy($rb_ge(range.$size(),1))?($writer=[range.$column_range(),$rb_plus("^",$rb_times("~",$rb_minus(range.$size(),1)))],$send(highlight_line,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]):($writer=[range.$column_range(),$rb_times("~",range.$size())],$send(highlight_line,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]),$truthy(ellipsis)&&(highlight_line=$rb_plus(highlight_line,"...")),$send([source_line,highlight_line],"map",[],(function(line){return null==line&&(line=nil),range.$source_buffer().$name()+":"+range.$line()+": "+line}),1)}),-2),$def(self,"$first_line_only",(function(range){return $neqeq(range.$line(),range.$last_line())?range.$resize(range.$source()["$=~"](/\n/)):range}),1),$def(self,"$last_line_only",(function(range){return $neqeq(range.$line(),range.$last_line())?range.$adjust($hash2(["begin_pos"],{begin_pos:range.$source()["$=~"](/[^\n]*$/)})):range}),1)}($nesting[0],0,$nesting)}($nesting[0],$nesting)},Opal.modules["parser/diagnostic/engine"]=function(Opal){var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$module=Opal.module,$klass=Opal.klass,$def=Opal.def,$truthy=Opal.truthy;return Opal.add_stubs("attr_accessor,ignore?,call,raise?,raise,protected,==,level"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$super,$parent_nesting){var self=$klass($base,null,"Engine"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;return $proto.consumer=$proto.ignore_warnings=$proto.all_errors_are_fatal=nil,self.$attr_accessor("consumer"),self.$attr_accessor("all_errors_are_fatal"),self.$attr_accessor("ignore_warnings"),$def(self,"$initialize",(function(consumer){return null==consumer&&(consumer=nil),this.consumer=consumer,this.all_errors_are_fatal=!1,this.ignore_warnings=!1}),-1),$def(self,"$process",(function(diagnostic){return $truthy(this["$ignore?"](diagnostic))||$truthy(this.consumer)&&this.consumer.$call(diagnostic),$truthy(this["$raise?"](diagnostic))&&this.$raise($$$($$("Parser"),"SyntaxError"),diagnostic),this}),1),self.$protected(),$def(self,"$ignore?",(function(diagnostic){var $ret_or_1;return $truthy($ret_or_1=this.ignore_warnings)?diagnostic.$level()["$=="]("warning"):$ret_or_1}),1),$def(self,"$raise?",(function(diagnostic){var $ret_or_1,$ret_or_2;return $truthy($ret_or_1=$truthy($ret_or_2=this.all_errors_are_fatal)?diagnostic.$level()["$=="]("error"):$ret_or_2)?$ret_or_1:diagnostic.$level()["$=="]("fatal")}),1)}(Opal.$r($nesting)("Diagnostic"),0,$nesting)}($nesting[0],$nesting)},Opal.modules["parser/static_environment"]=function(Opal){var $nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$const_set=Opal.const_set,$def=Opal.def;return Opal.add_stubs("reset,[],push,dup,pop,add,to_sym,include?,declare,declared?,empty?"),function($base,$parent_nesting){var $nesting=[$module($base,"Parser")].concat($parent_nesting);return function($base,$super,$parent_nesting){var self=$klass($base,null,"StaticEnvironment"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;return $proto.stack=$proto.variables=nil,$const_set($nesting[0],"FORWARD_ARGS","FORWARD_ARGS"),$const_set($nesting[0],"ANONYMOUS_BLOCKARG","ANONYMOUS_BLOCKARG"),$def(self,"$initialize",(function(){return this.$reset()}),0),$def(self,"$reset",(function(){return this.variables=$$("Set")["$[]"](),this.stack=[]}),0),$def(self,"$extend_static",(function(){return this.stack.$push(this.variables),this.variables=$$("Set")["$[]"](),this}),0),$def(self,"$extend_dynamic",(function(){return this.stack.$push(this.variables),this.variables=this.variables.$dup(),this}),0),$def(self,"$unextend",(function(){return this.variables=this.stack.$pop(),this}),0),$def(self,"$declare",(function(name){return this.variables.$add(name.$to_sym()),this}),1),$def(self,"$declared?",(function(name){return this.variables["$include?"](name.$to_sym())}),1),$def(self,"$declare_forward_args",(function(){return this.$declare($$("FORWARD_ARGS"))}),0),$def(self,"$declared_forward_args?",(function(){return this["$declared?"]($$("FORWARD_ARGS"))}),0),$def(self,"$declare_anonymous_blockarg",(function(){return this.$declare($$("ANONYMOUS_BLOCKARG"))}),0),$def(self,"$declared_anonymous_blockarg?",(function(){return this["$declared?"]($$("ANONYMOUS_BLOCKARG"))}),0),$def(self,"$empty?",(function(){return this.stack["$empty?"]()}),0)}($nesting[0],0,$nesting)}($nesting[0],$nesting)},Opal.modules["parser/lexer"]=function(Opal){var $nesting=[],$$=Opal.$r($nesting),nil=Opal.nil,$$$=Opal.$$$,$klass=Opal.klass,$send=Opal.send,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$const_set=Opal.const_set,$hash=Opal.hash,$def=Opal.def,$truthy=Opal.truthy,$eqeq=Opal.eqeq,$hash2=Opal.hash2,$rb_plus=Opal.rb_plus,$to_ary=Opal.to_ary,$rb_le=Opal.rb_le,$eqeqeq=Opal.eqeqeq,$rb_gt=Opal.rb_gt,$neqeq=Opal.neqeq,$not=Opal.not,$rb_ge=Opal.rb_ge,$range=Opal.range,$rb_lt=Opal.rb_lt,$gvars=Opal.gvars;return Opal.add_stubs("attr_accessor,private,_lex_trans_keys=,-,_lex_key_spans=,_lex_index_offsets=,_lex_indicies=,_lex_trans_targs=,_lex_trans_actions=,_lex_to_state_actions=,_lex_from_state_actions=,_lex_eof_trans=,lex_start=,lex_error=,lex_en_interp_words=,lex_en_interp_string=,lex_en_plain_words=,lex_en_plain_string=,lex_en_interp_backslash_delimited=,lex_en_plain_backslash_delimited=,lex_en_interp_backslash_delimited_words=,lex_en_plain_backslash_delimited_words=,lex_en_regexp_modifiers=,lex_en_expr_variable=,lex_en_expr_fname=,lex_en_expr_endfn=,lex_en_expr_dot=,lex_en_expr_arg=,lex_en_expr_cmdarg=,lex_en_expr_endarg=,lex_en_expr_mid=,lex_en_expr_beg=,lex_en_expr_labelarg=,lex_en_expr_value=,lex_en_expr_end=,lex_en_leading_dot=,lex_en_line_comment=,lex_en_line_begin=,freeze,ord,union,chars,attr_reader,reset,lex_en_line_begin,class,new,source,==,encoding,unpack,[],lex_en_expr_dot,lex_en_expr_fname,lex_en_expr_value,lex_en_expr_beg,lex_en_expr_mid,lex_en_expr_arg,lex_en_expr_cmdarg,lex_en_expr_end,lex_en_expr_endarg,lex_en_expr_endfn,lex_en_expr_labelarg,lex_en_interp_string,lex_en_interp_words,lex_en_plain_string,fetch,invert,push,count,pop,any?,shift,send,+,size,<=,===,<<,>,!=,emit_comment,tok,literal,flush_string,extend_content,emit,heredoc?,saved_herebody_s=,start_interp_brace,[]=,diagnostic,range,str_s,gsub,version?,nest_and_try_closing,heredoc_e,pop_literal,infer_indent_level,!,eof_codepoint?,words?,extend_space,extend_string,active?,>=,slice,start_with?,chr,munge_escape?,match,regexp?,squiggly_heredoc?,supports_line_continuation_via_slash?,include?,scan,join,=~,to_i,stack_pop,emit_table,push_literal,in_argdef,arg_or_cmdarg,<,emit_do,declared?,nil?,last,getbyte,inspect,end_with?,empty?,index,call,Float,to_f,length,lambda,Rational,Complex,each,encode_escape,%,in_kwarg,end_interp_brace_and_try_closing,lexpop,saved_herebody_s,next_state_for_literal,rstrip,&,|,lex_error,protected,force_encoding,process,backslash_delimited?,interpolate?,lex_en_interp_backslash_delimited_words,lex_en_plain_backslash_delimited_words,lex_en_plain_words,lex_en_interp_backslash_delimited,lex_en_plain_backslash_delimited,dedent_level,type,lex_en_regexp_modifiers,upcase"),function($base,$super,$parent_nesting){var self=$klass($base,null,"Lexer"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$writer=nil,$proto=self.$$prototype;return 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if($eqeqeq(117,$ret_or_1))self.escape_s=p,self.escape=nil;else if($eqeqeq(30,$ret_or_1))$truthy(self.herebody_s)&&(p=self.herebody_s,self.herebody_s=nil);else if($eqeqeq(60,$ret_or_1))self.sharp_s=$rb_minus(p,1);else if($eqeqeq(64,$ret_or_1))self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p);else if($eqeqeq(310,$ret_or_1))tm=p;else if($eqeqeq(37,$ret_or_1))tm=p;else if($eqeqeq(39,$ret_or_1))tm=p;else if($eqeqeq(41,$ret_or_1))tm=p;else if($eqeqeq(71,$ret_or_1))heredoc_e=p;else if($eqeqeq(349,$ret_or_1))tm=$rb_minus(p,1),diag_msg="ivar_name";else if($eqeqeq(352,$ret_or_1))tm=$rb_minus(p,2),diag_msg="cvar_name";else if($eqeqeq(360,$ret_or_1))self.escape=nil;else if($eqeqeq(392,$ret_or_1))tm=p;else if($eqeqeq(308,$ret_or_1))ident_tok=self.$tok(),ident_ts=self.ts,ident_te=self.te;else if($eqeqeq(479,$ret_or_1))self.num_base=16,self.num_digits_s=p;else if($eqeqeq(473,$ret_or_1))self.num_base=10,self.num_digits_s=p;else if($eqeqeq(476,$ret_or_1))self.num_base=8,self.num_digits_s=p;else if($eqeqeq(470,$ret_or_1))self.num_base=2,self.num_digits_s=p;else if($eqeqeq(485,$ret_or_1))self.num_base=10,self.num_digits_s=self.ts;else if($eqeqeq(447,$ret_or_1))self.num_base=8,self.num_digits_s=self.ts;else if($eqeqeq(462,$ret_or_1))self.num_suffix_s=p;else if($eqeqeq(455,$ret_or_1))self.num_suffix_s=p;else if($eqeqeq(452,$ret_or_1))self.num_suffix_s=p;else if($eqeqeq(89,$ret_or_1))tm=p;else if($eqeqeq(7,$ret_or_1))self.te=$rb_plus(p,1);else{if($eqeqeq(113,$ret_or_1)){self.te=$rb_plus(p,1),(current_literal=self.$literal()).$flush_string(),current_literal.$extend_content(),self.$emit("tSTRING_DBEG","#{".$freeze()),$truthy(current_literal["$heredoc?"]())&&($writer=[self.herebody_s],$send(current_literal,"saved_herebody_s=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],self.herebody_s=nil),current_literal.$start_interp_brace(),self.command_start=!0,self.cs=802,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(5,$ret_or_1)){self.te=$rb_plus(p,1),(current_literal=self.$literal()).$flush_string(),current_literal.$extend_content(),self.$emit("tSTRING_DVAR",nil,self.ts,$rb_plus(self.ts,1)),p=self.ts,$writer=[self.top,self.cs],$send(self.stack,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],self.top=$rb_plus(self.top,1),self.cs=347,_goto_level=20;continue}if($eqeqeq(109,$ret_or_1)){if(self.te=$rb_plus(p,1),current_literal=self.$literal(),$eqeq(self.te,pe)&&self.$diagnostic("fatal","string_eof",nil,self.$range(current_literal.$str_s(),$rb_plus(current_literal.$str_s(),1))),$truthy(current_literal["$heredoc?"]())){if(line=self.$tok(self.herebody_s,self.ts).$gsub(/\r+$/,"".$freeze()),$truthy(self["$version?"](18,19,20))&&(line=line.$gsub(/\r.*$/,"".$freeze())),$truthy(current_literal.$nest_and_try_closing(line,self.herebody_s,self.ts))){self.herebody_s=self.te,p=$rb_minus(current_literal.$heredoc_e(),1),self.cs=self.$pop_literal(),p=$rb_plus(p,1),_goto_level=40;continue}current_literal.$infer_indent_level(line),self.herebody_s=self.te}else{if($truthy(current_literal.$nest_and_try_closing(self.$tok(),self.ts,self.te))){self.cs=self.$pop_literal(),p=$rb_plus(p,1),_goto_level=40;continue}$truthy(self.herebody_s)&&(p=$rb_minus(self.herebody_s,1),self.herebody_s=nil)}$truthy(current_literal["$words?"]())&&$not(self["$eof_codepoint?"](self.source_pts["$[]"](p)))?current_literal.$extend_space(self.ts,self.te):(current_literal.$extend_string(self.$tok(),self.ts,self.te),current_literal.$flush_string())}else if($eqeqeq(108,$ret_or_1)){if(self.te=$rb_plus(p,1),string=self.$tok(),$truthy($rb_ge(self.version,22))&&$not(self.cond["$active?"]())&&(lookahead=self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te,2),!0))),current_literal=self.$literal(),$not(current_literal["$heredoc?"]())&&$truthy(token=current_literal.$nest_and_try_closing(string,self.ts,self.te,lookahead))){$eqeq(token["$[]"](0),"tLABEL_END")?(p=$rb_plus(p,1),self.$pop_literal(),self.cs=795):self.cs=self.$pop_literal(),p=$rb_plus(p,1),_goto_level=40;continue}current_literal.$extend_string(string,self.ts,self.te)}else if($eqeqeq(115,$ret_or_1))self.te=p,p=$rb_minus(p,1),$truthy($rb_ge(self.version,27))?self.$literal().$extend_string(self.$tok(),self.ts,self.te):(message=$truthy(self.$tok()["$start_with?"]("#@@"))?"cvar_name":"ivar_name",self.$diagnostic("error",message,$hash2(["name"],{name:self.$tok($rb_plus(self.ts,1),self.te)}),self.$range($rb_plus(self.ts,1),self.te)));else{if($eqeqeq(114,$ret_or_1)){self.te=p,p=$rb_minus(p,1),(current_literal=self.$literal()).$flush_string(),current_literal.$extend_content(),self.$emit("tSTRING_DVAR",nil,self.ts,$rb_plus(self.ts,1)),p=self.ts,$writer=[self.top,self.cs],$send(self.stack,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],self.top=$rb_plus(self.top,1),self.cs=347,_goto_level=20;continue}if($eqeqeq(111,$ret_or_1))self.te=p,p=$rb_minus(p,1),self.$literal().$extend_space(self.ts,self.te);else if($eqeqeq(112,$ret_or_1)){if(self.te=p,p=$rb_minus(p,1),string=self.$tok(),$truthy($rb_ge(self.version,22))&&$not(self.cond["$active?"]())&&(lookahead=self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te,2),!0))),current_literal=self.$literal(),$not(current_literal["$heredoc?"]())&&$truthy(token=current_literal.$nest_and_try_closing(string,self.ts,self.te,lookahead))){$eqeq(token["$[]"](0),"tLABEL_END")?(p=$rb_plus(p,1),self.$pop_literal(),self.cs=795):self.cs=self.$pop_literal(),p=$rb_plus(p,1),_goto_level=40;continue}current_literal.$extend_string(string,self.ts,self.te)}else if($eqeqeq(6,$ret_or_1))p=$rb_minus(self.te,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(4,$ret_or_1)){if(p=$rb_minus(self.te,1),string=self.$tok(),$truthy($rb_ge(self.version,22))&&$not(self.cond["$active?"]())&&(lookahead=self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te,2),!0))),current_literal=self.$literal(),$not(current_literal["$heredoc?"]())&&$truthy(token=current_literal.$nest_and_try_closing(string,self.ts,self.te,lookahead))){$eqeq(token["$[]"](0),"tLABEL_END")?(p=$rb_plus(p,1),self.$pop_literal(),self.cs=795):self.cs=self.$pop_literal(),p=$rb_plus(p,1),_goto_level=40;continue}current_literal.$extend_string(string,self.ts,self.te)}else{if($eqeqeq(145,$ret_or_1)){self.te=$rb_plus(p,1),(current_literal=self.$literal()).$flush_string(),current_literal.$extend_content(),self.$emit("tSTRING_DBEG","#{".$freeze()),$truthy(current_literal["$heredoc?"]())&&($writer=[self.herebody_s],$send(current_literal,"saved_herebody_s=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],self.herebody_s=nil),current_literal.$start_interp_brace(),self.command_start=!0,self.cs=802,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(10,$ret_or_1)){self.te=$rb_plus(p,1),(current_literal=self.$literal()).$flush_string(),current_literal.$extend_content(),self.$emit("tSTRING_DVAR",nil,self.ts,$rb_plus(self.ts,1)),p=self.ts,$writer=[self.top,self.cs],$send(self.stack,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],self.top=$rb_plus(self.top,1),self.cs=347,_goto_level=20;continue}if($eqeqeq(142,$ret_or_1)){if(self.te=$rb_plus(p,1),current_literal=self.$literal(),$eqeq(self.te,pe)&&self.$diagnostic("fatal","string_eof",nil,self.$range(current_literal.$str_s(),$rb_plus(current_literal.$str_s(),1))),$truthy(current_literal["$heredoc?"]())){if(line=self.$tok(self.herebody_s,self.ts).$gsub(/\r+$/,"".$freeze()),$truthy(self["$version?"](18,19,20))&&(line=line.$gsub(/\r.*$/,"".$freeze())),$truthy(current_literal.$nest_and_try_closing(line,self.herebody_s,self.ts))){self.herebody_s=self.te,p=$rb_minus(current_literal.$heredoc_e(),1),self.cs=self.$pop_literal(),p=$rb_plus(p,1),_goto_level=40;continue}current_literal.$infer_indent_level(line),self.herebody_s=self.te}else{if($truthy(current_literal.$nest_and_try_closing(self.$tok(),self.ts,self.te))){self.cs=self.$pop_literal(),p=$rb_plus(p,1),_goto_level=40;continue}$truthy(self.herebody_s)&&(p=$rb_minus(self.herebody_s,1),self.herebody_s=nil)}$truthy(current_literal["$words?"]())&&$not(self["$eof_codepoint?"](self.source_pts["$[]"](p)))?current_literal.$extend_space(self.ts,self.te):(current_literal.$extend_string(self.$tok(),self.ts,self.te),current_literal.$flush_string())}else if($eqeqeq(141,$ret_or_1)){if(self.te=$rb_plus(p,1),string=self.$tok(),$truthy($rb_ge(self.version,22))&&$not(self.cond["$active?"]())&&(lookahead=self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te,2),!0))),current_literal=self.$literal(),$not(current_literal["$heredoc?"]())&&$truthy(token=current_literal.$nest_and_try_closing(string,self.ts,self.te,lookahead))){$eqeq(token["$[]"](0),"tLABEL_END")?(p=$rb_plus(p,1),self.$pop_literal(),self.cs=795):self.cs=self.$pop_literal(),p=$rb_plus(p,1),_goto_level=40;continue}current_literal.$extend_string(string,self.ts,self.te)}else if($eqeqeq(147,$ret_or_1))self.te=p,p=$rb_minus(p,1),$truthy($rb_ge(self.version,27))?self.$literal().$extend_string(self.$tok(),self.ts,self.te):(message=$truthy(self.$tok()["$start_with?"]("#@@"))?"cvar_name":"ivar_name",self.$diagnostic("error",message,$hash2(["name"],{name:self.$tok($rb_plus(self.ts,1),self.te)}),self.$range($rb_plus(self.ts,1),self.te)));else{if($eqeqeq(146,$ret_or_1)){self.te=p,p=$rb_minus(p,1),(current_literal=self.$literal()).$flush_string(),current_literal.$extend_content(),self.$emit("tSTRING_DVAR",nil,self.ts,$rb_plus(self.ts,1)),p=self.ts,$writer=[self.top,self.cs],$send(self.stack,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],self.top=$rb_plus(self.top,1),self.cs=347,_goto_level=20;continue}if($eqeqeq(144,$ret_or_1)){if(self.te=p,p=$rb_minus(p,1),string=self.$tok(),$truthy($rb_ge(self.version,22))&&$not(self.cond["$active?"]())&&(lookahead=self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te,2),!0))),current_literal=self.$literal(),$not(current_literal["$heredoc?"]())&&$truthy(token=current_literal.$nest_and_try_closing(string,self.ts,self.te,lookahead))){$eqeq(token["$[]"](0),"tLABEL_END")?(p=$rb_plus(p,1),self.$pop_literal(),self.cs=795):self.cs=self.$pop_literal(),p=$rb_plus(p,1),_goto_level=40;continue}current_literal.$extend_string(string,self.ts,self.te)}else if($eqeqeq(11,$ret_or_1))p=$rb_minus(self.te,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(9,$ret_or_1)){if(p=$rb_minus(self.te,1),string=self.$tok(),$truthy($rb_ge(self.version,22))&&$not(self.cond["$active?"]())&&(lookahead=self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te,2),!0))),current_literal=self.$literal(),$not(current_literal["$heredoc?"]())&&$truthy(token=current_literal.$nest_and_try_closing(string,self.ts,self.te,lookahead))){$eqeq(token["$[]"](0),"tLABEL_END")?(p=$rb_plus(p,1),self.$pop_literal(),self.cs=795):self.cs=self.$pop_literal(),p=$rb_plus(p,1),_goto_level=40;continue}current_literal.$extend_string(string,self.ts,self.te)}else if($eqeqeq(173,$ret_or_1)){if(self.te=$rb_plus(p,1),current_literal=self.$literal(),$eqeq(self.te,pe)&&self.$diagnostic("fatal","string_eof",nil,self.$range(current_literal.$str_s(),$rb_plus(current_literal.$str_s(),1))),$truthy(current_literal["$heredoc?"]())){if(line=self.$tok(self.herebody_s,self.ts).$gsub(/\r+$/,"".$freeze()),$truthy(self["$version?"](18,19,20))&&(line=line.$gsub(/\r.*$/,"".$freeze())),$truthy(current_literal.$nest_and_try_closing(line,self.herebody_s,self.ts))){self.herebody_s=self.te,p=$rb_minus(current_literal.$heredoc_e(),1),self.cs=self.$pop_literal(),p=$rb_plus(p,1),_goto_level=40;continue}current_literal.$infer_indent_level(line),self.herebody_s=self.te}else{if($truthy(current_literal.$nest_and_try_closing(self.$tok(),self.ts,self.te))){self.cs=self.$pop_literal(),p=$rb_plus(p,1),_goto_level=40;continue}$truthy(self.herebody_s)&&(p=$rb_minus(self.herebody_s,1),self.herebody_s=nil)}$truthy(current_literal["$words?"]())&&$not(self["$eof_codepoint?"](self.source_pts["$[]"](p)))?current_literal.$extend_space(self.ts,self.te):(current_literal.$extend_string(self.$tok(),self.ts,self.te),current_literal.$flush_string())}else if($eqeqeq(172,$ret_or_1)){if(self.te=$rb_plus(p,1),string=self.$tok(),$truthy($rb_ge(self.version,22))&&$not(self.cond["$active?"]())&&(lookahead=self.source_buffer.$slice(Opal.Range.$new(self.te,$rb_plus(self.te,2),!0))),current_literal=self.$literal(),$not(current_literal["$heredoc?"]())&&$truthy(token=current_literal.$nest_and_try_closing(string,self.ts,self.te,lookahead))){$eqeq(token["$[]"](0),"tLABEL_END")?(p=$rb_plus(p,1),self.$pop_literal(),self.cs=795):self.cs=self.$pop_literal(),p=$rb_plus(p,1),_goto_level=40;continue}current_literal.$extend_string(string,self.ts,self.te)}else if($eqeqeq(175,$ret_or_1))self.te=p,p=$rb_minus(p,1),self.$literal().$extend_space(self.ts,self.te);else 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null==chars&&(chars=nil),self.$emit("tRATIONAL",self.$Rational(chars))}),{$$arity:1,$$s:self}),self.te=p,p=$rb_minus(p,1),digits=self.$tok(self.ts,self.num_suffix_s),$truthy(self["$version?"](18,19,20))?(self.$emit("tFLOAT",self.$Float(digits),self.ts,self.num_suffix_s),p=$rb_minus(self.num_suffix_s,1)):self.num_xfrm.$call(digits),p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(460,$ret_or_1)){self.num_xfrm=$send(self,"lambda",[],(function $$12(chars){var self=null==$$12.$$s?this:$$12.$$s;return null==chars&&(chars=nil),self.$emit("tIMAGINARY",self.$Complex(0,self.$Rational(chars)))}),{$$arity:1,$$s:self}),self.te=p,p=$rb_minus(p,1),digits=self.$tok(self.ts,self.num_suffix_s),$truthy(self["$version?"](18,19,20))?(self.$emit("tFLOAT",self.$Float(digits),self.ts,self.num_suffix_s),p=$rb_minus(self.num_suffix_s,1)):self.num_xfrm.$call(digits),p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(459,$ret_or_1)){self.num_xfrm=$send(self,"lambda",[],(function $$13(chars){var self=null==$$13.$$s?this:$$13.$$s;return null==self.ts&&(self.ts=nil),null==self.te&&(self.te=nil),null==chars&&(chars=nil),self.$emit("tFLOAT",self.$Float(chars),self.ts,$rb_minus(self.te,6)),p=$rb_minus(p,6)}),{$$arity:1,$$s:self}),self.te=p,p=$rb_minus(p,1),digits=self.$tok(self.ts,self.num_suffix_s),$truthy(self["$version?"](18,19,20))?(self.$emit("tFLOAT",self.$Float(digits),self.ts,self.num_suffix_s),p=$rb_minus(self.num_suffix_s,1)):self.num_xfrm.$call(digits),p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(137,$ret_or_1))self.escape="",codepoints=self.$tok($rb_plus(self.escape_s,2),$rb_minus(p,1)),codepoint_s=$rb_plus(self.escape_s,2),$truthy($rb_lt(self.version,24))&&(($truthy(codepoints["$start_with?"](" "))||$truthy(codepoints["$start_with?"]("\t")))&&self.$diagnostic("fatal","invalid_unicode_escape",nil,self.$range($rb_plus(self.escape_s,2),$rb_plus(self.escape_s,3))),$truthy(spaces_p=codepoints.$index(/[ \t]{2}/))&&self.$diagnostic("fatal","invalid_unicode_escape",nil,self.$range($rb_plus($rb_plus(codepoint_s,spaces_p),1),$rb_plus($rb_plus(codepoint_s,spaces_p),2))),($truthy(codepoints["$end_with?"](" "))||$truthy(codepoints["$end_with?"]("\t")))&&self.$diagnostic("fatal","invalid_unicode_escape",nil,self.$range($rb_minus(p,1),p))),function(){var $brk=Opal.new_brk();try{$send(codepoints.$scan(/([0-9a-fA-F]+)|([ \t]+)/),"each",[],(function $$14($mlhs_tmp1){var $c,self=null==$$14.$$s?this:$$14.$$s,codepoint_str=nil,spaces=nil,codepoint=nil;return null==self.escape&&(self.escape=nil),null==$mlhs_tmp1&&($mlhs_tmp1=nil),codepoint_str=null==($c=$to_ary($mlhs_tmp1))[0]?nil:$c[0],spaces=null==$c[1]?nil:$c[1],$truthy(spaces)?codepoint_s=$rb_plus(codepoint_s,spaces.$length()):(codepoint=codepoint_str.$to_i(16),$truthy($rb_ge(codepoint,1114112))&&(self.$diagnostic("error","unicode_point_too_large",nil,self.$range(codepoint_s,$rb_plus(codepoint_s,codepoint_str.$length()))),Opal.brk(nil,$brk)),self.escape=$rb_plus(self.escape,codepoint.$chr($$$($$("Encoding"),"UTF_8"))),codepoint_s=$rb_plus(codepoint_s,codepoint_str.$length()))}),{$$arity:1,$$s:self,$$brk:$brk,$$has_top_level_mlhs_arg:!0})}catch(err){if(err===$brk)return err.$v;throw err}}(),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(168,$ret_or_1))self.escape="",codepoints=self.$tok($rb_plus(self.escape_s,2),$rb_minus(p,1)),codepoint_s=$rb_plus(self.escape_s,2),$truthy($rb_lt(self.version,24))&&(($truthy(codepoints["$start_with?"](" "))||$truthy(codepoints["$start_with?"]("\t")))&&self.$diagnostic("fatal","invalid_unicode_escape",nil,self.$range($rb_plus(self.escape_s,2),$rb_plus(self.escape_s,3))),$truthy(spaces_p=codepoints.$index(/[ \t]{2}/))&&self.$diagnostic("fatal","invalid_unicode_escape",nil,self.$range($rb_plus($rb_plus(codepoint_s,spaces_p),1),$rb_plus($rb_plus(codepoint_s,spaces_p),2))),($truthy(codepoints["$end_with?"](" "))||$truthy(codepoints["$end_with?"]("\t")))&&self.$diagnostic("fatal","invalid_unicode_escape",nil,self.$range($rb_minus(p,1),p))),function(){var $brk=Opal.new_brk();try{$send(codepoints.$scan(/([0-9a-fA-F]+)|([ \t]+)/),"each",[],(function $$15($mlhs_tmp1){var $c,self=null==$$15.$$s?this:$$15.$$s,codepoint_str=nil,spaces=nil,codepoint=nil;return null==self.escape&&(self.escape=nil),null==$mlhs_tmp1&&($mlhs_tmp1=nil),codepoint_str=null==($c=$to_ary($mlhs_tmp1))[0]?nil:$c[0],spaces=null==$c[1]?nil:$c[1],$truthy(spaces)?codepoint_s=$rb_plus(codepoint_s,spaces.$length()):(codepoint=codepoint_str.$to_i(16),$truthy($rb_ge(codepoint,1114112))&&(self.$diagnostic("error","unicode_point_too_large",nil,self.$range(codepoint_s,$rb_plus(codepoint_s,codepoint_str.$length()))),Opal.brk(nil,$brk)),self.escape=$rb_plus(self.escape,codepoint.$chr($$$($$("Encoding"),"UTF_8"))),codepoint_s=$rb_plus(codepoint_s,codepoint_str.$length()))}),{$$arity:1,$$s:self,$$brk:$brk,$$has_top_level_mlhs_arg:!0})}catch(err){if(err===$brk)return err.$v;throw err}}(),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else{if($eqeqeq(382,$ret_or_1)){self.escape="",codepoints=self.$tok($rb_plus(self.escape_s,2),$rb_minus(p,1)),codepoint_s=$rb_plus(self.escape_s,2),$truthy($rb_lt(self.version,24))&&(($truthy(codepoints["$start_with?"](" "))||$truthy(codepoints["$start_with?"]("\t")))&&self.$diagnostic("fatal","invalid_unicode_escape",nil,self.$range($rb_plus(self.escape_s,2),$rb_plus(self.escape_s,3))),$truthy(spaces_p=codepoints.$index(/[ \t]{2}/))&&self.$diagnostic("fatal","invalid_unicode_escape",nil,self.$range($rb_plus($rb_plus(codepoint_s,spaces_p),1),$rb_plus($rb_plus(codepoint_s,spaces_p),2))),($truthy(codepoints["$end_with?"](" "))||$truthy(codepoints["$end_with?"]("\t")))&&self.$diagnostic("fatal","invalid_unicode_escape",nil,self.$range($rb_minus(p,1),p))),function(){var $brk=Opal.new_brk();try{$send(codepoints.$scan(/([0-9a-fA-F]+)|([ \t]+)/),"each",[],(function $$16($mlhs_tmp1){var $c,self=null==$$16.$$s?this:$$16.$$s,codepoint_str=nil,spaces=nil,codepoint=nil;return null==self.escape&&(self.escape=nil),null==$mlhs_tmp1&&($mlhs_tmp1=nil),codepoint_str=null==($c=$to_ary($mlhs_tmp1))[0]?nil:$c[0],spaces=null==$c[1]?nil:$c[1],$truthy(spaces)?codepoint_s=$rb_plus(codepoint_s,spaces.$length()):(codepoint=codepoint_str.$to_i(16),$truthy($rb_ge(codepoint,1114112))&&(self.$diagnostic("error","unicode_point_too_large",nil,self.$range(codepoint_s,$rb_plus(codepoint_s,codepoint_str.$length()))),Opal.brk(nil,$brk)),self.escape=$rb_plus(self.escape,codepoint.$chr($$$($$("Encoding"),"UTF_8"))),codepoint_s=$rb_plus(codepoint_s,codepoint_str.$length()))}),{$$arity:1,$$s:self,$$brk:$brk,$$has_top_level_mlhs_arg:!0})}catch(err){if(err===$brk)return err.$v;throw err}}(),self.te=p,p=$rb_minus(p,1),value=$truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok($rb_plus(self.ts,1)),$truthy(self["$version?"](18))?self.$emit("tINTEGER",value.$getbyte(0)):self.$emit("tCHARACTER",value),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(118,$ret_or_1))codepoint=self.source_pts["$[]"]($rb_minus(p,1)),$truthy($rb_ge(self.version,30))&&($eqeq(codepoint,117)||$eqeq(codepoint,85))&&self.$diagnostic("fatal","invalid_escape"),$truthy((self.escape=$$("ESCAPES")["$[]"](codepoint))["$nil?"]())&&(self.escape=self.$encode_escape(self.source_buffer.$slice($rb_minus(p,1)))),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(149,$ret_or_1))codepoint=self.source_pts["$[]"]($rb_minus(p,1)),$truthy($rb_ge(self.version,30))&&($eqeq(codepoint,117)||$eqeq(codepoint,85))&&self.$diagnostic("fatal","invalid_escape"),$truthy((self.escape=$$("ESCAPES")["$[]"](codepoint))["$nil?"]())&&(self.escape=self.$encode_escape(self.source_buffer.$slice($rb_minus(p,1)))),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else{if($eqeqeq(363,$ret_or_1)){codepoint=self.source_pts["$[]"]($rb_minus(p,1)),$truthy($rb_ge(self.version,30))&&($eqeq(codepoint,117)||$eqeq(codepoint,85))&&self.$diagnostic("fatal","invalid_escape"),$truthy((self.escape=$$("ESCAPES")["$[]"](codepoint))["$nil?"]())&&(self.escape=self.$encode_escape(self.source_buffer.$slice($rb_minus(p,1)))),self.te=p,p=$rb_minus(p,1),value=$truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok($rb_plus(self.ts,1)),$truthy(self["$version?"](18))?self.$emit("tINTEGER",value.$getbyte(0)):self.$emit("tCHARACTER",value),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(121,$ret_or_1))self.$diagnostic("fatal","invalid_escape"),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(152,$ret_or_1))self.$diagnostic("fatal","invalid_escape"),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else{if($eqeqeq(366,$ret_or_1)){self.$diagnostic("fatal","invalid_escape"),self.te=p,p=$rb_minus(p,1),value=$truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok($rb_plus(self.ts,1)),$truthy(self["$version?"](18))?self.$emit("tINTEGER",value.$getbyte(0)):self.$emit("tCHARACTER",value),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(123,$ret_or_1))self.escape="",self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(154,$ret_or_1))self.escape="",self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else{if($eqeqeq(368,$ret_or_1)){self.escape="",self.te=p,p=$rb_minus(p,1),value=$truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok($rb_plus(self.ts,1)),$truthy(self["$version?"](18))?self.$emit("tINTEGER",value.$getbyte(0)):self.$emit("tCHARACTER",value),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(120,$ret_or_1))self.escape=self.$encode_escape(self.$tok(self.escape_s,p).$to_i(8)["$%"](256)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(151,$ret_or_1))self.escape=self.$encode_escape(self.$tok(self.escape_s,p).$to_i(8)["$%"](256)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else{if($eqeqeq(365,$ret_or_1)){self.escape=self.$encode_escape(self.$tok(self.escape_s,p).$to_i(8)["$%"](256)),self.te=p,p=$rb_minus(p,1),value=$truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok($rb_plus(self.ts,1)),$truthy(self["$version?"](18))?self.$emit("tINTEGER",value.$getbyte(0)):self.$emit("tCHARACTER",value),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(140,$ret_or_1))self.escape=self.$encode_escape(self.$tok($rb_plus(self.escape_s,1),p).$to_i(16)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(171,$ret_or_1))self.escape=self.$encode_escape(self.$tok($rb_plus(self.escape_s,1),p).$to_i(16)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else{if($eqeqeq(385,$ret_or_1)){self.escape=self.$encode_escape(self.$tok($rb_plus(self.escape_s,1),p).$to_i(16)),self.te=p,p=$rb_minus(p,1),value=$truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok($rb_plus(self.ts,1)),$truthy(self["$version?"](18))?self.$emit("tINTEGER",value.$getbyte(0)):self.$emit("tCHARACTER",value),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(139,$ret_or_1))self.$diagnostic("fatal","invalid_hex_escape",nil,self.$range($rb_minus(self.escape_s,1),$rb_plus(p,2))),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(170,$ret_or_1))self.$diagnostic("fatal","invalid_hex_escape",nil,self.$range($rb_minus(self.escape_s,1),$rb_plus(p,2))),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else{if($eqeqeq(384,$ret_or_1)){self.$diagnostic("fatal","invalid_hex_escape",nil,self.$range($rb_minus(self.escape_s,1),$rb_plus(p,2))),self.te=p,p=$rb_minus(p,1),value=$truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok($rb_plus(self.ts,1)),$truthy(self["$version?"](18))?self.$emit("tINTEGER",value.$getbyte(0)):self.$emit("tCHARACTER",value),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(134,$ret_or_1))self.escape=self.$tok($rb_plus(self.escape_s,1),p).$to_i(16).$chr($$$($$("Encoding"),"UTF_8")),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(165,$ret_or_1))self.escape=self.$tok($rb_plus(self.escape_s,1),p).$to_i(16).$chr($$$($$("Encoding"),"UTF_8")),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else{if($eqeqeq(379,$ret_or_1)){self.escape=self.$tok($rb_plus(self.escape_s,1),p).$to_i(16).$chr($$$($$("Encoding"),"UTF_8")),self.te=p,p=$rb_minus(p,1),value=$truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok($rb_plus(self.ts,1)),$truthy(self["$version?"](18))?self.$emit("tINTEGER",value.$getbyte(0)):self.$emit("tCHARACTER",value),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(133,$ret_or_1))self.$diagnostic("fatal","invalid_unicode_escape",nil,self.$range($rb_minus(self.escape_s,1),p)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(164,$ret_or_1))self.$diagnostic("fatal","invalid_unicode_escape",nil,self.$range($rb_minus(self.escape_s,1),p)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else{if($eqeqeq(378,$ret_or_1)){self.$diagnostic("fatal","invalid_unicode_escape",nil,self.$range($rb_minus(self.escape_s,1),p)),self.te=p,p=$rb_minus(p,1),value=$truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok($rb_plus(self.ts,1)),$truthy(self["$version?"](18))?self.$emit("tINTEGER",value.$getbyte(0)):self.$emit("tCHARACTER",value),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(138,$ret_or_1))self.$diagnostic("fatal","invalid_unicode_escape",nil,self.$range($rb_minus(self.escape_s,1),p)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else 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if($eqeqeq(65,$ret_or_1))self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.newline_s=p;else if($eqeqeq(222,$ret_or_1))self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.te=p,p=$rb_minus(p,1);else if($eqeqeq(237,$ret_or_1))self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.te=p,p=$rb_minus(p,1);else if($eqeqeq(249,$ret_or_1))self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.te=p,p=$rb_minus(p,1);else{if($eqeqeq(271,$ret_or_1)){self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.te=p,p=$rb_minus(p,1),self.cs=810,_goto_level=20;continue}if($eqeqeq(286,$ret_or_1))self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.te=p,p=$rb_minus(p,1);else if($eqeqeq(298,$ret_or_1))self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.te=p,p=$rb_minus(p,1);else if($eqeqeq(324,$ret_or_1))self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.te=p,p=$rb_minus(p,1);else 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if($eqeqeq(103,$ret_or_1))self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.te=p,p=$rb_minus(p,1);else{if($eqeqeq(243,$ret_or_1)){tm=p,self.te=p,p=$rb_minus(p,1),self.$emit("tFID",self.$tok(self.ts,tm),self.ts,tm),self.cs=self.$arg_or_cmdarg(cmd_state),p=$rb_minus(tm,1),p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(338,$ret_or_1)){tm=p,self.te=p,p=$rb_minus(p,1),self.$emit("tSYMBOL",self.$tok($rb_plus(self.ts,1),tm),self.ts,tm),p=$rb_minus(tm,1),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(309,$ret_or_1)){tm=p,self.te=p,p=$rb_minus(p,1),p=$rb_minus(self.ts,1),self.cs=810,_goto_level=20;continue}if($eqeqeq(424,$ret_or_1)){if(tm=p,$eqeqeq(145,$ret_or_2=self.act)){p=$rb_minus(self.te,1),$eqeq(self.lambda_stack.$last(),self.paren_nest)?(self.lambda_stack.$pop(),$eqeq(self.$tok(),"{".$freeze())?self.$emit("tLAMBEG","{".$freeze()):self.$emit("kDO_LAMBDA","do".$freeze())):$eqeq(self.$tok(),"{".$freeze())?self.$emit("tLCURLY","{".$freeze()):self.$emit_do(),$eqeq(self.$tok(),"{".$freeze())&&(self.paren_nest=$rb_plus(self.paren_nest,1)),self.command_start=!0,self.cs=802,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(146,$ret_or_2)){p=$rb_minus(self.te,1),self.$emit_table($$("KEYWORDS")),self.cs=352,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(147,$ret_or_2)){p=$rb_minus(self.te,1),self.$emit("kCLASS","class".$freeze(),self.ts,$rb_plus(self.ts,5)),self.$emit("tLSHFT","<<".$freeze(),$rb_minus(self.te,2),self.te),self.cs=802,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(148,$ret_or_2)){p=$rb_minus(self.te,1),self.$emit_table($$("KEYWORDS")),self.cs=563,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(149,$ret_or_2)){p=$rb_minus(self.te,1),self.$emit_table($$("KEYWORDS")),self.command_start=!0,self.cs=802,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(150,$ret_or_2)){p=$rb_minus(self.te,1),self.$emit_table($$("KEYWORDS")),self.cs=539,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(151,$ret_or_2)){if(p=$rb_minus(self.te,1),self.$emit_table($$("KEYWORDS")),$truthy(self["$version?"](18))&&$eqeq(self.$tok(),"not".$freeze())){self.cs=563,p=$rb_plus(p,1),_goto_level=40;continue}self.cs=494,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(152,$ret_or_2)){p=$rb_minus(self.te,1),$truthy(self["$version?"](18))?(self.$emit("tIDENTIFIER"),$not(self.static_env["$nil?"]())&&$truthy(self.static_env["$declared?"](self.$tok()))||(self.cs=self.$arg_or_cmdarg(cmd_state))):self.$emit("k__ENCODING__","__ENCODING__".$freeze()),p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(153,$ret_or_2)){p=$rb_minus(self.te,1),self.$emit_table($$("KEYWORDS")),p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(154,$ret_or_2)){p=$rb_minus(self.te,1),digits=self.$tok(self.num_digits_s,self.num_suffix_s),$truthy(digits["$end_with?"]("_".$freeze()))?self.$diagnostic("error","trailing_in_number",$hash2(["character"],{character:"_".$freeze()}),self.$range($rb_minus(self.te,1),self.te)):$truthy(digits["$empty?"]())&&$eqeq(self.num_base,8)&&$truthy(self["$version?"](18))?digits="0".$freeze():$truthy(digits["$empty?"]())?self.$diagnostic("error","empty_numeric"):$eqeq(self.num_base,8)&&$truthy(invalid_idx=digits.$index(/[89]/))&&(invalid_s=$rb_plus(self.num_digits_s,invalid_idx),self.$diagnostic("error","invalid_octal",nil,self.$range(invalid_s,$rb_plus(invalid_s,1)))),$truthy(self["$version?"](18,19,20))?(self.$emit("tINTEGER",digits.$to_i(self.num_base),self.ts,self.num_suffix_s),p=$rb_minus(self.num_suffix_s,1)):self.num_xfrm.$call(digits.$to_i(self.num_base)),p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(156,$ret_or_2)){if(p=$rb_minus(self.te,1),!$truthy(self["$version?"](18,19,20))){self.$emit("tINTEGER",self.$tok(self.ts,$rb_minus(self.te,1)).$to_i(),self.ts,$rb_minus(self.te,1)),p=$rb_minus(p,1),p=$rb_plus(p,1),_goto_level=40;continue}self.$diagnostic("error","trailing_in_number",$hash2(["character"],{character:self.$tok($rb_minus(self.te,1),self.te)}),self.$range($rb_minus(self.te,1),self.te))}else if($eqeqeq(157,$ret_or_2)){if(p=$rb_minus(self.te,1),!$truthy(self["$version?"](18,19,20))){self.$emit("tFLOAT",self.$tok(self.ts,$rb_minus(self.te,1)).$to_f(),self.ts,$rb_minus(self.te,1)),p=$rb_minus(p,1),p=$rb_plus(p,1),_goto_level=40;continue}self.$diagnostic("error","trailing_in_number",$hash2(["character"],{character:self.$tok($rb_minus(self.te,1),self.te)}),self.$range($rb_minus(self.te,1),self.te))}else{if($eqeqeq(158,$ret_or_2)){p=$rb_minus(self.te,1),digits=self.$tok(self.ts,self.num_suffix_s),$truthy(self["$version?"](18,19,20))?(self.$emit("tFLOAT",self.$Float(digits),self.ts,self.num_suffix_s),p=$rb_minus(self.num_suffix_s,1)):self.num_xfrm.$call(digits),p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(160,$ret_or_2)){p=$rb_minus(self.te,1),self.$emit("tCONSTANT"),self.cs=self.$arg_or_cmdarg(cmd_state),p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(164,$ret_or_2)){if(p=$rb_minus(self.te,1),self.$emit("tIDENTIFIER"),$not(self.static_env["$nil?"]())&&$truthy(self.static_env["$declared?"](self.$tok()))){self.cs=465,p=$rb_plus(p,1),_goto_level=40;continue}self.cs=self.$arg_or_cmdarg(cmd_state),p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(165,$ret_or_2)){p=$rb_minus(self.te,1),$eqeq(tm,self.te)?self.$emit("tFID"):(self.$emit("tIDENTIFIER",self.$tok(self.ts,tm),self.ts,tm),p=$rb_minus(tm,1)),self.cs=494,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(167,$ret_or_2)){p=$rb_minus(self.te,1),self.$emit_table($$("PUNCTUATION")),self.cs=802,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(168,$ret_or_2)){p=$rb_minus(self.te,1),self.$emit_table($$("PUNCTUATION")),self.cs=563,p=$rb_plus(p,1),_goto_level=40;continue}}}else{if($eqeqeq(244,$ret_or_1)){tm=$rb_minus(p,2),self.te=p,p=$rb_minus(p,1),self.$emit("tFID",self.$tok(self.ts,tm),self.ts,tm),self.cs=self.$arg_or_cmdarg(cmd_state),p=$rb_minus(tm,1),p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(339,$ret_or_1)){tm=$rb_minus(p,2),self.te=p,p=$rb_minus(p,1),self.$emit("tSYMBOL",self.$tok($rb_plus(self.ts,1),tm),self.ts,tm),p=$rb_minus(tm,1),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(311,$ret_or_1)){tm=$rb_minus(p,2),self.te=p,p=$rb_minus(p,1),p=$rb_minus(self.ts,1),self.cs=810,_goto_level=20;continue}if($eqeqeq(425,$ret_or_1)){tm=$rb_minus(p,2),self.te=p,p=$rb_minus(p,1),$eqeq(tm,self.te)?self.$emit("tFID"):(self.$emit("tIDENTIFIER",self.$tok(self.ts,tm),self.ts,tm),p=$rb_minus(tm,1)),self.cs=494,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(340,$ret_or_1)){tm=p,self.te=p,p=$rb_minus(p,1),self.$emit("tSYMBOL",self.$tok($rb_plus(self.ts,1),tm),self.ts,tm),p=$rb_minus(tm,1),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(312,$ret_or_1)){tm=p,self.te=p,p=$rb_minus(p,1),p=$rb_minus(self.ts,1),self.cs=810,_goto_level=20;continue}if($eqeqeq(341,$ret_or_1)){tm=$rb_minus(p,2),self.te=p,p=$rb_minus(p,1),self.$emit("tSYMBOL",self.$tok($rb_plus(self.ts,1),tm),self.ts,tm),p=$rb_minus(tm,1),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(313,$ret_or_1)){tm=$rb_minus(p,2),self.te=p,p=$rb_minus(p,1),p=$rb_minus(self.ts,1),self.cs=810,_goto_level=20;continue}if($eqeqeq(345,$ret_or_1)){tm=$rb_minus(p,2),self.te=p,p=$rb_minus(p,1),self.$emit("tSYMBOL",self.$tok($rb_plus(self.ts,1),tm),self.ts,tm),p=$rb_minus(tm,1),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(316,$ret_or_1)){tm=$rb_minus(p,2),self.te=p,p=$rb_minus(p,1),p=$rb_minus(self.ts,1),self.cs=810,_goto_level=20;continue}if($eqeqeq(344,$ret_or_1)){tm=$rb_minus(p,2),self.te=p,p=$rb_minus(p,1),self.$emit("tSYMBOL",self.$tok($rb_plus(self.ts,1),tm),self.ts,tm),p=$rb_minus(tm,1),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(315,$ret_or_1)){if(tm=$rb_minus(p,2),$eqeqeq(99,$ret_or_2=self.act)){p=$rb_minus(self.te,1),self.$emit("tUNARY_NUM",self.$tok(self.ts,$rb_plus(self.ts,1)),self.ts,$rb_plus(self.ts,1)),p=$rb_minus(p,1),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(106,$ret_or_2))p=$rb_minus(self.te,1),self.$diagnostic("error","unterminated_heredoc_id",nil,self.$range(self.ts,$rb_plus(self.ts,1)));else{if($eqeqeq(117,$ret_or_2)){if(p=$rb_minus(self.te,1),$truthy($rb_ge(self.version,27))){self.$emit("tPIPE",self.$tok(self.ts,$rb_plus(self.ts,1)),self.ts,$rb_plus(self.ts,1)),p=$rb_minus(p,1),self.cs=563,p=$rb_plus(p,1),_goto_level=40;continue}p=$rb_minus(p,2),self.cs=810,_goto_level=20;continue}if($eqeqeq(121,$ret_or_2)){p=$rb_minus(self.te,1),self.$emit_table($$("PUNCTUATION_BEGIN")),p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(122,$ret_or_2)){p=$rb_minus(self.te,1),self.$emit("kRESCUE","rescue".$freeze(),self.ts,tm),p=$rb_minus(tm,1),self.cs=539,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(123,$ret_or_2)){p=$rb_minus(self.te,1),self.$emit_table($$("KEYWORDS_BEGIN")),self.command_start=!0,self.cs=802,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(127,$ret_or_2)){p=$rb_minus(self.te,1),p=$rb_minus(self.ts,1),self.cs=810,_goto_level=20;continue}if($eqeqeq(128,$ret_or_2)){if(p=$rb_minus(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if($eqeqeq(474,$ret_or_1))self.num_base=10,self.num_digits_s=p,self.num_suffix_s=p;else if($eqeqeq(477,$ret_or_1))self.num_base=8,self.num_digits_s=p,self.num_suffix_s=p;else if($eqeqeq(471,$ret_or_1))self.num_base=2,self.num_digits_s=p,self.num_suffix_s=p;else if($eqeqeq(486,$ret_or_1))self.num_base=10,self.num_digits_s=self.ts,self.num_suffix_s=p;else if($eqeqeq(449,$ret_or_1))self.num_base=8,self.num_digits_s=self.ts,self.num_suffix_s=p;else if($eqeqeq(487,$ret_or_1))self.num_suffix_s=p,self.num_xfrm=$send(self,"lambda",[],(function $$17(chars){return null==chars&&(chars=nil),(null==$$17.$$s?this:$$17.$$s).$emit("tINTEGER",chars)}),{$$arity:1,$$s:self});else if($eqeqeq(8,$ret_or_1))self.te=$rb_plus(p,1),self.newline_s=p;else if($eqeqeq(453,$ret_or_1))self.te=$rb_plus(p,1),self.num_suffix_s=p;else if($eqeqeq(228,$ret_or_1))self.te=$rb_plus(p,1),self.act=43;else if($eqeqeq(215,$ret_or_1))self.te=$rb_plus(p,1),self.act=44;else if($eqeqeq(211,$ret_or_1))self.te=$rb_plus(p,1),self.act=45;else if($eqeqeq(27,$ret_or_1))self.te=$rb_plus(p,1),self.act=72;else if($eqeqeq(261,$ret_or_1))self.te=$rb_plus(p,1),self.act=73;else if($eqeqeq(28,$ret_or_1))self.te=$rb_plus(p,1),self.act=78;else if($eqeqeq(254,$ret_or_1))self.te=$rb_plus(p,1),self.act=79;else if($eqeqeq(281,$ret_or_1))self.te=$rb_plus(p,1),self.act=85;else if($eqeqeq(46,$ret_or_1))self.te=$rb_plus(p,1),self.act=86;else if($eqeqeq(302,$ret_or_1))self.te=$rb_plus(p,1),self.act=93;else if($eqeqeq(291,$ret_or_1))self.te=$rb_plus(p,1),self.act=94;else if($eqeqeq(70,$ret_or_1))self.te=$rb_plus(p,1),self.act=106;else if($eqeqeq(394,$ret_or_1))self.te=$rb_plus(p,1),self.act=117;else if($eqeqeq(305,$ret_or_1))self.te=$rb_plus(p,1),self.act=121;else if($eqeqeq(388,$ret_or_1))self.te=$rb_plus(p,1),self.act=122;else if($eqeqeq(387,$ret_or_1))self.te=$rb_plus(p,1),self.act=123;else if($eqeqeq(75,$ret_or_1))self.te=$rb_plus(p,1),self.act=127;else 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if($eqeqeq(423,$ret_or_1))self.te=$rb_plus(p,1),self.act=165;else if($eqeqeq(416,$ret_or_1))self.te=$rb_plus(p,1),self.act=167;else if($eqeqeq(422,$ret_or_1))self.te=$rb_plus(p,1),self.act=168;else if($eqeqeq(88,$ret_or_1))self.te=$rb_plus(p,1),self.act=181;else if($eqeqeq(511,$ret_or_1))self.te=$rb_plus(p,1),self.act=185;else if($eqeqeq(183,$ret_or_1)){if(self.newline_s=p,self.te=$rb_plus(p,1),current_literal=self.$literal(),$eqeq(self.te,pe)&&self.$diagnostic("fatal","string_eof",nil,self.$range(current_literal.$str_s(),$rb_plus(current_literal.$str_s(),1))),$truthy(current_literal["$heredoc?"]())){if(line=self.$tok(self.herebody_s,self.ts).$gsub(/\r+$/,"".$freeze()),$truthy(self["$version?"](18,19,20))&&(line=line.$gsub(/\r.*$/,"".$freeze())),$truthy(current_literal.$nest_and_try_closing(line,self.herebody_s,self.ts))){self.herebody_s=self.te,p=$rb_minus(current_literal.$heredoc_e(),1),self.cs=self.$pop_literal(),p=$rb_plus(p,1),_goto_level=40;continue}current_literal.$infer_indent_level(line),self.herebody_s=self.te}else{if($truthy(current_literal.$nest_and_try_closing(self.$tok(),self.ts,self.te))){self.cs=self.$pop_literal(),p=$rb_plus(p,1),_goto_level=40;continue}$truthy(self.herebody_s)&&(p=$rb_minus(self.herebody_s,1),self.herebody_s=nil)}$truthy(current_literal["$words?"]())&&$not(self["$eof_codepoint?"](self.source_pts["$[]"](p)))?current_literal.$extend_space(self.ts,self.te):(current_literal.$extend_string(self.$tok(),self.ts,self.te),current_literal.$flush_string()),self.escape_s=p,self.escape=nil}else if($eqeqeq(124,$ret_or_1))codepoint=self.source_pts["$[]"]($rb_minus(p,1)),$truthy($rb_ge(self.version,30))&&($eqeq(codepoint,117)||$eqeq(codepoint,85))&&self.$diagnostic("fatal","invalid_escape"),$truthy((self.escape=$$("ESCAPES")["$[]"](codepoint))["$nil?"]())&&(self.escape=self.$encode_escape(self.source_buffer.$slice($rb_minus(p,1)))),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$&"](159)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(155,$ret_or_1))codepoint=self.source_pts["$[]"]($rb_minus(p,1)),$truthy($rb_ge(self.version,30))&&($eqeq(codepoint,117)||$eqeq(codepoint,85))&&self.$diagnostic("fatal","invalid_escape"),$truthy((self.escape=$$("ESCAPES")["$[]"](codepoint))["$nil?"]())&&(self.escape=self.$encode_escape(self.source_buffer.$slice($rb_minus(p,1)))),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$&"](159)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else{if($eqeqeq(369,$ret_or_1)){codepoint=self.source_pts["$[]"]($rb_minus(p,1)),$truthy($rb_ge(self.version,30))&&($eqeq(codepoint,117)||$eqeq(codepoint,85))&&self.$diagnostic("fatal","invalid_escape"),$truthy((self.escape=$$("ESCAPES")["$[]"](codepoint))["$nil?"]())&&(self.escape=self.$encode_escape(self.source_buffer.$slice($rb_minus(p,1)))),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$&"](159)),self.te=p,p=$rb_minus(p,1),value=$truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok($rb_plus(self.ts,1)),$truthy(self["$version?"](18))?self.$emit("tINTEGER",value.$getbyte(0)):self.$emit("tCHARACTER",value),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(131,$ret_or_1))codepoint=self.source_pts["$[]"]($rb_minus(p,1)),$truthy($rb_ge(self.version,30))&&($eqeq(codepoint,117)||$eqeq(codepoint,85))&&self.$diagnostic("fatal","invalid_escape"),$truthy((self.escape=$$("ESCAPES")["$[]"](codepoint))["$nil?"]())&&(self.escape=self.$encode_escape(self.source_buffer.$slice($rb_minus(p,1)))),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(162,$ret_or_1))codepoint=self.source_pts["$[]"]($rb_minus(p,1)),$truthy($rb_ge(self.version,30))&&($eqeq(codepoint,117)||$eqeq(codepoint,85))&&self.$diagnostic("fatal","invalid_escape"),$truthy((self.escape=$$("ESCAPES")["$[]"](codepoint))["$nil?"]())&&(self.escape=self.$encode_escape(self.source_buffer.$slice($rb_minus(p,1)))),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else{if($eqeqeq(376,$ret_or_1)){codepoint=self.source_pts["$[]"]($rb_minus(p,1)),$truthy($rb_ge(self.version,30))&&($eqeq(codepoint,117)||$eqeq(codepoint,85))&&self.$diagnostic("fatal","invalid_escape"),$truthy((self.escape=$$("ESCAPES")["$[]"](codepoint))["$nil?"]())&&(self.escape=self.$encode_escape(self.source_buffer.$slice($rb_minus(p,1)))),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),value=$truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok($rb_plus(self.ts,1)),$truthy(self["$version?"](18))?self.$emit("tINTEGER",value.$getbyte(0)):self.$emit("tCHARACTER",value),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(122,$ret_or_1))self.escape=self.source_buffer.$slice($rb_minus(p,1)).$chr(),$truthy($rb_ge(self.version,27))&&($truthy($range(0,8,!1)["$include?"](self.escape.$ord()))||$truthy($range(14,31,!1)["$include?"](self.escape.$ord())))&&self.$diagnostic("fatal","invalid_escape"),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$&"](159)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(153,$ret_or_1))self.escape=self.source_buffer.$slice($rb_minus(p,1)).$chr(),$truthy($rb_ge(self.version,27))&&($truthy($range(0,8,!1)["$include?"](self.escape.$ord()))||$truthy($range(14,31,!1)["$include?"](self.escape.$ord())))&&self.$diagnostic("fatal","invalid_escape"),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$&"](159)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else{if($eqeqeq(367,$ret_or_1)){self.escape=self.source_buffer.$slice($rb_minus(p,1)).$chr(),$truthy($rb_ge(self.version,27))&&($truthy($range(0,8,!1)["$include?"](self.escape.$ord()))||$truthy($range(14,31,!1)["$include?"](self.escape.$ord())))&&self.$diagnostic("fatal","invalid_escape"),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$&"](159)),self.te=p,p=$rb_minus(p,1),value=$truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok($rb_plus(self.ts,1)),$truthy(self["$version?"](18))?self.$emit("tINTEGER",value.$getbyte(0)):self.$emit("tCHARACTER",value),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(130,$ret_or_1))self.escape=self.source_buffer.$slice($rb_minus(p,1)).$chr(),$truthy($rb_ge(self.version,27))&&($truthy($range(0,8,!1)["$include?"](self.escape.$ord()))||$truthy($range(14,31,!1)["$include?"](self.escape.$ord())))&&self.$diagnostic("fatal","invalid_escape"),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(161,$ret_or_1))self.escape=self.source_buffer.$slice($rb_minus(p,1)).$chr(),$truthy($rb_ge(self.version,27))&&($truthy($range(0,8,!1)["$include?"](self.escape.$ord()))||$truthy($range(14,31,!1)["$include?"](self.escape.$ord())))&&self.$diagnostic("fatal","invalid_escape"),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else{if($eqeqeq(375,$ret_or_1)){self.escape=self.source_buffer.$slice($rb_minus(p,1)).$chr(),$truthy($rb_ge(self.version,27))&&($truthy($range(0,8,!1)["$include?"](self.escape.$ord()))||$truthy($range(14,31,!1)["$include?"](self.escape.$ord())))&&self.$diagnostic("fatal","invalid_escape"),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),value=$truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok($rb_plus(self.ts,1)),$truthy(self["$version?"](18))?self.$emit("tINTEGER",value.$getbyte(0)):self.$emit("tCHARACTER",value),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(126,$ret_or_1))self.escape="",self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(157,$ret_or_1))self.escape="",self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else{if($eqeqeq(371,$ret_or_1)){self.escape="",self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),value=$truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok($rb_plus(self.ts,1)),$truthy(self["$version?"](18))?self.$emit("tINTEGER",value.$getbyte(0)):self.$emit("tCHARACTER",value),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(129,$ret_or_1))self.escape=self.$encode_escape(self.$tok($rb_minus(p,2),p).$to_i(16)),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$&"](159)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else 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if($eqeqeq(167,$ret_or_1))self.$diagnostic("fatal","invalid_unicode_escape",nil,self.$range($rb_minus(self.escape_s,1),p)),self.$diagnostic("fatal","unterminated_unicode",nil,self.$range($rb_minus(p,1),p)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else{if($eqeqeq(381,$ret_or_1)){self.$diagnostic("fatal","invalid_unicode_escape",nil,self.$range($rb_minus(self.escape_s,1),p)),self.$diagnostic("fatal","unterminated_unicode",nil,self.$range($rb_minus(p,1),p)),self.te=p,p=$rb_minus(p,1),value=$truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok($rb_plus(self.ts,1)),$truthy(self["$version?"](18))?self.$emit("tINTEGER",value.$getbyte(0)):self.$emit("tCHARACTER",value),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(116,$ret_or_1))self.escape_s=p,self.escape=nil,self.$diagnostic("fatal","escape_eof",nil,self.$range($rb_minus(p,1),p)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(148,$ret_or_1))self.escape_s=p,self.escape=nil,self.$diagnostic("fatal","escape_eof",nil,self.$range($rb_minus(p,1),p)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else{if($eqeqeq(362,$ret_or_1)){self.escape_s=p,self.escape=nil,self.$diagnostic("fatal","escape_eof",nil,self.$range($rb_minus(p,1),p)),self.te=p,p=$rb_minus(p,1),value=$truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok($rb_plus(self.ts,1)),$truthy(self["$version?"](18))?self.$emit("tINTEGER",value.$getbyte(0)):self.$emit("tCHARACTER",value),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(62,$ret_or_1))self.sharp_s=$rb_minus(p,1),self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.newline_s=p;else if($eqeqeq(221,$ret_or_1))self.sharp_s=$rb_minus(p,1),self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.te=p,p=$rb_minus(p,1);else if($eqeqeq(236,$ret_or_1))self.sharp_s=$rb_minus(p,1),self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.te=p,p=$rb_minus(p,1);else if($eqeqeq(248,$ret_or_1))self.sharp_s=$rb_minus(p,1),self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.te=p,p=$rb_minus(p,1);else{if($eqeqeq(270,$ret_or_1)){self.sharp_s=$rb_minus(p,1),self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.te=p,p=$rb_minus(p,1),self.cs=810,_goto_level=20;continue}if($eqeqeq(285,$ret_or_1))self.sharp_s=$rb_minus(p,1),self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.te=p,p=$rb_minus(p,1);else if($eqeqeq(297,$ret_or_1))self.sharp_s=$rb_minus(p,1),self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.te=p,p=$rb_minus(p,1);else if($eqeqeq(323,$ret_or_1))self.sharp_s=$rb_minus(p,1),self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.te=p,p=$rb_minus(p,1);else if($eqeqeq(399,$ret_or_1))self.sharp_s=$rb_minus(p,1),self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.te=p,p=$rb_minus(p,1);else if($eqeqeq(409,$ret_or_1))self.sharp_s=$rb_minus(p,1),self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.te=p,p=$rb_minus(p,1);else if($eqeqeq(430,$ret_or_1))self.sharp_s=$rb_minus(p,1),self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.te=p,p=$rb_minus(p,1);else if($eqeqeq(102,$ret_or_1))self.sharp_s=$rb_minus(p,1),self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.te=p,p=$rb_minus(p,1);else if($eqeqeq(482,$ret_or_1))self.num_base=10,self.num_digits_s=self.ts,self.num_suffix_s=p,self.num_xfrm=$send(self,"lambda",[],(function $$18(chars){return null==chars&&(chars=nil),(null==$$18.$$s?this:$$18.$$s).$emit("tINTEGER",chars)}),{$$arity:1,$$s:self});else if($eqeqeq(446,$ret_or_1))self.num_base=8,self.num_digits_s=self.ts,self.num_suffix_s=p,self.num_xfrm=$send(self,"lambda",[],(function $$19(chars){return null==chars&&(chars=nil),(null==$$19.$$s?this:$$19.$$s).$emit("tINTEGER",chars)}),{$$arity:1,$$s:self});else{if($eqeqeq(461,$ret_or_1)){self.num_suffix_s=p,self.num_xfrm=$send(self,"lambda",[],(function $$20(chars){return null==chars&&(chars=nil),(null==$$20.$$s?this:$$20.$$s).$emit("tINTEGER",chars)}),{$$arity:1,$$s:self}),self.te=p,p=$rb_minus(p,1),digits=self.$tok(self.num_digits_s,self.num_suffix_s),$truthy(digits["$end_with?"]("_".$freeze()))?self.$diagnostic("error","trailing_in_number",$hash2(["character"],{character:"_".$freeze()}),self.$range($rb_minus(self.te,1),self.te)):$truthy(digits["$empty?"]())&&$eqeq(self.num_base,8)&&$truthy(self["$version?"](18))?digits="0".$freeze():$truthy(digits["$empty?"]())?self.$diagnostic("error","empty_numeric"):$eqeq(self.num_base,8)&&$truthy(invalid_idx=digits.$index(/[89]/))&&(invalid_s=$rb_plus(self.num_digits_s,invalid_idx),self.$diagnostic("error","invalid_octal",nil,self.$range(invalid_s,$rb_plus(invalid_s,1)))),$truthy(self["$version?"](18,19,20))?(self.$emit("tINTEGER",digits.$to_i(self.num_base),self.ts,self.num_suffix_s),p=$rb_minus(self.num_suffix_s,1)):self.num_xfrm.$call(digits.$to_i(self.num_base)),p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(454,$ret_or_1)){self.num_suffix_s=p,self.num_xfrm=$send(self,"lambda",[],(function $$21(chars){var self=null==$$21.$$s?this:$$21.$$s;return null==chars&&(chars=nil),self.$emit("tFLOAT",self.$Float(chars))}),{$$arity:1,$$s:self}),self.te=p,p=$rb_minus(p,1),digits=self.$tok(self.ts,self.num_suffix_s),$truthy(self["$version?"](18,19,20))?(self.$emit("tFLOAT",self.$Float(digits),self.ts,self.num_suffix_s),p=$rb_minus(self.num_suffix_s,1)):self.num_xfrm.$call(digits),p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(450,$ret_or_1)){self.num_suffix_s=p,self.num_xfrm=$send(self,"lambda",[],(function $$22(chars){var self=null==$$22.$$s?this:$$22.$$s;return null==chars&&(chars=nil),self.$emit("tFLOAT",self.$Float(chars))}),{$$arity:1,$$s:self}),self.te=p,p=$rb_minus(p,1),digits=self.$tok(self.ts,self.num_suffix_s),$truthy(self["$version?"](18,19,20))?(self.$emit("tFLOAT",self.$Float(digits),self.ts,self.num_suffix_s),p=$rb_minus(self.num_suffix_s,1)):self.num_xfrm.$call(digits),p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(276,$ret_or_1))self.te=$rb_plus(p,1),self.newline_s=p,self.act=79;else if($eqeqeq(36,$ret_or_1))self.te=$rb_plus(p,1),$truthy(self.herebody_s)&&(p=self.herebody_s,self.herebody_s=nil),self.act=78;else if($eqeqeq(47,$ret_or_1))self.te=$rb_plus(p,1),$truthy(self.herebody_s)&&(p=self.herebody_s,self.herebody_s=nil),self.act=86;else if($eqeqeq(94,$ret_or_1))self.te=$rb_plus(p,1),$truthy(self.herebody_s)&&(p=self.herebody_s,self.herebody_s=nil),self.act=181;else if($eqeqeq(66,$ret_or_1))self.te=$rb_plus(p,1),self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.act=99;else if($eqeqeq(85,$ret_or_1))self.te=$rb_plus(p,1),self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.act=147;else if($eqeqeq(93,$ret_or_1))self.te=$rb_plus(p,1),self.$emit_comment(self.sharp_s,$eqeq(p,pe)?$rb_minus(p,2):p),self.act=181;else if($eqeqeq(38,$ret_or_1))self.te=$rb_plus(p,1),tm=p,self.act=73;else if($eqeqeq(391,$ret_or_1))self.te=$rb_plus(p,1),tm=p,self.act=127;else if($eqeqeq(390,$ret_or_1))self.te=$rb_plus(p,1),tm=p,self.act=128;else if($eqeqeq(483,$ret_or_1))self.te=$rb_plus(p,1),self.num_base=10,self.num_digits_s=self.ts,self.act=154;else if($eqeqeq(127,$ret_or_1))codepoint=self.source_pts["$[]"]($rb_minus(p,1)),$truthy($rb_ge(self.version,30))&&($eqeq(codepoint,117)||$eqeq(codepoint,85))&&self.$diagnostic("fatal","invalid_escape"),$truthy((self.escape=$$("ESCAPES")["$[]"](codepoint))["$nil?"]())&&(self.escape=self.$encode_escape(self.source_buffer.$slice($rb_minus(p,1)))),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$&"](159)),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(158,$ret_or_1))codepoint=self.source_pts["$[]"]($rb_minus(p,1)),$truthy($rb_ge(self.version,30))&&($eqeq(codepoint,117)||$eqeq(codepoint,85))&&self.$diagnostic("fatal","invalid_escape"),$truthy((self.escape=$$("ESCAPES")["$[]"](codepoint))["$nil?"]())&&(self.escape=self.$encode_escape(self.source_buffer.$slice($rb_minus(p,1)))),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$&"](159)),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else{if($eqeqeq(372,$ret_or_1)){codepoint=self.source_pts["$[]"]($rb_minus(p,1)),$truthy($rb_ge(self.version,30))&&($eqeq(codepoint,117)||$eqeq(codepoint,85))&&self.$diagnostic("fatal","invalid_escape"),$truthy((self.escape=$$("ESCAPES")["$[]"](codepoint))["$nil?"]())&&(self.escape=self.$encode_escape(self.source_buffer.$slice($rb_minus(p,1)))),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$&"](159)),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),value=$truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok($rb_plus(self.ts,1)),$truthy(self["$version?"](18))?self.$emit("tINTEGER",value.$getbyte(0)):self.$emit("tCHARACTER",value),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(125,$ret_or_1))self.escape=self.source_buffer.$slice($rb_minus(p,1)).$chr(),$truthy($rb_ge(self.version,27))&&($truthy($range(0,8,!1)["$include?"](self.escape.$ord()))||$truthy($range(14,31,!1)["$include?"](self.escape.$ord())))&&self.$diagnostic("fatal","invalid_escape"),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$&"](159)),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(156,$ret_or_1))self.escape=self.source_buffer.$slice($rb_minus(p,1)).$chr(),$truthy($rb_ge(self.version,27))&&($truthy($range(0,8,!1)["$include?"](self.escape.$ord()))||$truthy($range(14,31,!1)["$include?"](self.escape.$ord())))&&self.$diagnostic("fatal","invalid_escape"),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$&"](159)),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else{if($eqeqeq(370,$ret_or_1)){self.escape=self.source_buffer.$slice($rb_minus(p,1)).$chr(),$truthy($rb_ge(self.version,27))&&($truthy($range(0,8,!1)["$include?"](self.escape.$ord()))||$truthy($range(14,31,!1)["$include?"](self.escape.$ord())))&&self.$diagnostic("fatal","invalid_escape"),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$&"](159)),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),value=$truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok($rb_plus(self.ts,1)),$truthy(self["$version?"](18))?self.$emit("tINTEGER",value.$getbyte(0)):self.$emit("tCHARACTER",value),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(132,$ret_or_1))self.escape=self.$encode_escape(self.$tok($rb_minus(p,2),p).$to_i(16)),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$&"](159)),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(163,$ret_or_1))self.escape=self.$encode_escape(self.$tok($rb_minus(p,2),p).$to_i(16)),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$&"](159)),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else{if($eqeqeq(377,$ret_or_1)){self.escape=self.$encode_escape(self.$tok($rb_minus(p,2),p).$to_i(16)),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$&"](159)),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),value=$truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok($rb_plus(self.ts,1)),$truthy(self["$version?"](18))?self.$emit("tINTEGER",value.$getbyte(0)):self.$emit("tCHARACTER",value),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(128,$ret_or_1))self.escape=self.$encode_escape(self.$tok($rb_minus(p,2),p).$to_i(16)),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$&"](159)),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else if($eqeqeq(159,$ret_or_1))self.escape=self.$encode_escape(self.$tok($rb_minus(p,2),p).$to_i(16)),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$&"](159)),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),current_literal=self.$literal(),escaped_char=self.source_buffer.$slice(self.escape_s).$chr(),$truthy(current_literal["$munge_escape?"](escaped_char))?$truthy(current_literal["$regexp?"]())&&$truthy($$("REGEXP_META_CHARACTERS").$match(escaped_char))?current_literal.$extend_string(self.$tok(),self.ts,self.te):current_literal.$extend_string(escaped_char,self.ts,self.te):$truthy(current_literal["$squiggly_heredoc?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok(),self.ts,self.te):$truthy(current_literal["$supports_line_continuation_via_slash?"]())&&$eqeq(escaped_char,"\n".$freeze())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):$truthy(current_literal["$regexp?"]())&&$truthy($rb_ge(self.version,31))&&$truthy(["c","C","m","M"]["$include?"](escaped_char))?current_literal.$extend_string(self.escape,self.ts,self.te):$truthy(current_literal["$regexp?"]())?current_literal.$extend_string(self.$tok().$gsub("\\\n".$freeze(),"".$freeze()),self.ts,self.te):current_literal.$extend_string($truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok(),self.ts,self.te);else{if($eqeqeq(373,$ret_or_1)){self.escape=self.$encode_escape(self.$tok($rb_minus(p,2),p).$to_i(16)),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$&"](159)),self.escape=self.$encode_escape(self.escape["$[]"](0).$ord()["$|"](128)),self.te=p,p=$rb_minus(p,1),value=$truthy($ret_or_2=self.escape)?$ret_or_2:self.$tok($rb_plus(self.ts,1)),$truthy(self["$version?"](18))?self.$emit("tINTEGER",value.$getbyte(0)):self.$emit("tCHARACTER",value),self.cs=810,p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(478,$ret_or_1)){self.num_base=16,self.num_digits_s=p,self.num_suffix_s=p,self.num_xfrm=$send(self,"lambda",[],(function $$23(chars){return null==chars&&(chars=nil),(null==$$23.$$s?this:$$23.$$s).$emit("tINTEGER",chars)}),{$$arity:1,$$s:self}),self.te=p,p=$rb_minus(p,1),digits=self.$tok(self.num_digits_s,self.num_suffix_s),$truthy(digits["$end_with?"]("_".$freeze()))?self.$diagnostic("error","trailing_in_number",$hash2(["character"],{character:"_".$freeze()}),self.$range($rb_minus(self.te,1),self.te)):$truthy(digits["$empty?"]())&&$eqeq(self.num_base,8)&&$truthy(self["$version?"](18))?digits="0".$freeze():$truthy(digits["$empty?"]())?self.$diagnostic("error","empty_numeric"):$eqeq(self.num_base,8)&&$truthy(invalid_idx=digits.$index(/[89]/))&&(invalid_s=$rb_plus(self.num_digits_s,invalid_idx),self.$diagnostic("error","invalid_octal",nil,self.$range(invalid_s,$rb_plus(invalid_s,1)))),$truthy(self["$version?"](18,19,20))?(self.$emit("tINTEGER",digits.$to_i(self.num_base),self.ts,self.num_suffix_s),p=$rb_minus(self.num_suffix_s,1)):self.num_xfrm.$call(digits.$to_i(self.num_base)),p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(472,$ret_or_1)){self.num_base=10,self.num_digits_s=p,self.num_suffix_s=p,self.num_xfrm=$send(self,"lambda",[],(function $$24(chars){return null==chars&&(chars=nil),(null==$$24.$$s?this:$$24.$$s).$emit("tINTEGER",chars)}),{$$arity:1,$$s:self}),self.te=p,p=$rb_minus(p,1),digits=self.$tok(self.num_digits_s,self.num_suffix_s),$truthy(digits["$end_with?"]("_".$freeze()))?self.$diagnostic("error","trailing_in_number",$hash2(["character"],{character:"_".$freeze()}),self.$range($rb_minus(self.te,1),self.te)):$truthy(digits["$empty?"]())&&$eqeq(self.num_base,8)&&$truthy(self["$version?"](18))?digits="0".$freeze():$truthy(digits["$empty?"]())?self.$diagnostic("error","empty_numeric"):$eqeq(self.num_base,8)&&$truthy(invalid_idx=digits.$index(/[89]/))&&(invalid_s=$rb_plus(self.num_digits_s,invalid_idx),self.$diagnostic("error","invalid_octal",nil,self.$range(invalid_s,$rb_plus(invalid_s,1)))),$truthy(self["$version?"](18,19,20))?(self.$emit("tINTEGER",digits.$to_i(self.num_base),self.ts,self.num_suffix_s),p=$rb_minus(self.num_suffix_s,1)):self.num_xfrm.$call(digits.$to_i(self.num_base)),p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(475,$ret_or_1)){self.num_base=8,self.num_digits_s=p,self.num_suffix_s=p,self.num_xfrm=$send(self,"lambda",[],(function $$25(chars){return null==chars&&(chars=nil),(null==$$25.$$s?this:$$25.$$s).$emit("tINTEGER",chars)}),{$$arity:1,$$s:self}),self.te=p,p=$rb_minus(p,1),digits=self.$tok(self.num_digits_s,self.num_suffix_s),$truthy(digits["$end_with?"]("_".$freeze()))?self.$diagnostic("error","trailing_in_number",$hash2(["character"],{character:"_".$freeze()}),self.$range($rb_minus(self.te,1),self.te)):$truthy(digits["$empty?"]())&&$eqeq(self.num_base,8)&&$truthy(self["$version?"](18))?digits="0".$freeze():$truthy(digits["$empty?"]())?self.$diagnostic("error","empty_numeric"):$eqeq(self.num_base,8)&&$truthy(invalid_idx=digits.$index(/[89]/))&&(invalid_s=$rb_plus(self.num_digits_s,invalid_idx),self.$diagnostic("error","invalid_octal",nil,self.$range(invalid_s,$rb_plus(invalid_s,1)))),$truthy(self["$version?"](18,19,20))?(self.$emit("tINTEGER",digits.$to_i(self.num_base),self.ts,self.num_suffix_s),p=$rb_minus(self.num_suffix_s,1)):self.num_xfrm.$call(digits.$to_i(self.num_base)),p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(469,$ret_or_1)){self.num_base=2,self.num_digits_s=p,self.num_suffix_s=p,self.num_xfrm=$send(self,"lambda",[],(function $$26(chars){return null==chars&&(chars=nil),(null==$$26.$$s?this:$$26.$$s).$emit("tINTEGER",chars)}),{$$arity:1,$$s:self}),self.te=p,p=$rb_minus(p,1),digits=self.$tok(self.num_digits_s,self.num_suffix_s),$truthy(digits["$end_with?"]("_".$freeze()))?self.$diagnostic("error","trailing_in_number",$hash2(["character"],{character:"_".$freeze()}),self.$range($rb_minus(self.te,1),self.te)):$truthy(digits["$empty?"]())&&$eqeq(self.num_base,8)&&$truthy(self["$version?"](18))?digits="0".$freeze():$truthy(digits["$empty?"]())?self.$diagnostic("error","empty_numeric"):$eqeq(self.num_base,8)&&$truthy(invalid_idx=digits.$index(/[89]/))&&(invalid_s=$rb_plus(self.num_digits_s,invalid_idx),self.$diagnostic("error","invalid_octal",nil,self.$range(invalid_s,$rb_plus(invalid_s,1)))),$truthy(self["$version?"](18,19,20))?(self.$emit("tINTEGER",digits.$to_i(self.num_base),self.ts,self.num_suffix_s),p=$rb_minus(self.num_suffix_s,1)):self.num_xfrm.$call(digits.$to_i(self.num_base)),p=$rb_plus(p,1),_goto_level=40;continue}if($eqeqeq(481,$ret_or_1)){self.num_base=10,self.num_digits_s=self.ts,self.num_suffix_s=p,self.num_xfrm=$send(self,"lambda",[],(function $$27(chars){return 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this.dynamic_cache_result=!0}),0)}($nesting[0],$$$($$$($$$("Parser"),"AST"),"Processor"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/opal_engine_check"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$to_a=Opal.to_a,$truthy=Opal.truthy,$send2=Opal.send2,$find_super=Opal.find_super,$def=Opal.def,$const_set=Opal.const_set;return Opal.add_stubs("require,children,skip_check_present?,process,s,skip_check_present_not?,=="),self.$require("opal/rewriters/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Rewriters")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super,$parent_nesting){var self=$klass($base,$super,"OpalEngineCheck"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return $def(self,"$on_if",(function $$on_if(node){var $a,test,true_body,false_body,$yield=$$on_if.$$p||nil,$ret_or_1=nil;return delete $$on_if.$$p,test=null==($a=[].concat($to_a(node.$children())))[0]?nil:$a[0],true_body=null==$a[1]?nil:$a[1],false_body=null==$a[2]?nil:$a[2],$truthy(this["$skip_check_present?"](test))?this.$process($truthy($ret_or_1=true_body)?$ret_or_1:this.$s("nil")):$truthy(this["$skip_check_present_not?"](test))?this.$process($truthy($ret_or_1=false_body)?$ret_or_1:this.$s("nil")):$send2(this,$find_super(this,"on_if",$$on_if,!1,!0),"on_if",[node],$yield)}),1),$def(self,"$skip_check_present?",(function(test){var $ret_or_1;return $truthy($ret_or_1=test["$=="]($$("RUBY_ENGINE_CHECK")))?$ret_or_1:test["$=="]($$("RUBY_PLATFORM_CHECK"))}),1),$def(self,"$skip_check_present_not?",(function(test){var $ret_or_1;return $truthy($ret_or_1=test["$=="]($$("RUBY_ENGINE_CHECK_NOT")))?$ret_or_1:test["$=="]($$("RUBY_PLATFORM_CHECK_NOT"))}),1),$const_set($nesting[0],"RUBY_ENGINE_CHECK",self.$s("send",self.$s("const",nil,"RUBY_ENGINE"),"==",self.$s("str","opal"))),$const_set($nesting[0],"RUBY_ENGINE_CHECK_NOT",self.$s("send",self.$s("const",nil,"RUBY_ENGINE"),"!=",self.$s("str","opal"))),$const_set($nesting[0],"RUBY_PLATFORM_CHECK",self.$s("send",self.$s("const",nil,"RUBY_PLATFORM"),"==",self.$s("str","opal"))),$const_set($nesting[0],"RUBY_PLATFORM_CHECK_NOT",self.$s("send",self.$s("const",nil,"RUBY_PLATFORM"),"!=",self.$s("str","opal")))}($nesting[0],$$("Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/for_rewriter"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$defs=Opal.defs,$truthy=Opal.truthy,$rb_plus=Opal.rb_plus,$to_a=Opal.to_a,$send=Opal.send,$eqeqeq=Opal.eqeqeq,$def=Opal.def,$send2=Opal.send2,$find_super=Opal.find_super;return Opal.add_stubs("require,+,find,map,s,next_tmp,class,===,type,updated,<<,prepend_to_body,process,attr_reader,new,to_a,result"),self.$require("opal/rewriters/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Rewriters")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super,$parent_nesting){var self=$klass($base,$super,"ForRewriter"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return $defs(self,"$reset_tmp_counter!",(function(){return this.counter=0}),0),$defs(self,"$next_tmp",(function(){var $ret_or_1;return null==this.counter&&(this.counter=nil),this.counter=$truthy($ret_or_1=this.counter)?$ret_or_1:0,this.counter=$rb_plus(this.counter,1),"$for_tmp"+this.counter}),0),$def(self,"$on_for",(function(node){var $a,iterating_value,iterating_lvars,lvars_declared_in_body,outer_assigns,tmp_loop_variable,get_tmp_loop_variable,loop_variable_assignment,loop_variable=nil,loop_body=nil;return loop_variable=null==($a=[].concat($to_a(node)))[0]?nil:$a[0],iterating_value=null==$a[1]?nil:$a[1],loop_body=null==$a[2]?nil:$a[2],iterating_lvars=$$("LocalVariableAssigns").$find(loop_variable),lvars_declared_in_body=$$("LocalVariableAssigns").$find(loop_body),outer_assigns=$send($rb_plus(iterating_lvars,lvars_declared_in_body),"map",[],(function $$2(lvar_name){return null==lvar_name&&(lvar_name=nil),(null==$$2.$$s?this:$$2.$$s).$s("lvdeclare",lvar_name)}),{$$arity:1,$$s:this}),tmp_loop_variable=this.$class().$next_tmp(),get_tmp_loop_variable=this.$s("js_tmp",tmp_loop_variable),loop_variable_assignment=$eqeqeq("mlhs",loop_variable.$type())?loop_variable.$updated("masgn",[loop_variable,get_tmp_loop_variable]):loop_variable["$<<"](get_tmp_loop_variable),loop_body=this.$prepend_to_body(loop_body,loop_variable_assignment),(node=node.$updated("send",[iterating_value,"each",node.$updated("iter",[this.$s("args",this.$s("arg",tmp_loop_variable)),this.$process(loop_body)])])).$updated("begin",[].concat($to_a(outer_assigns)).concat([node]))}),1),function($base,$super,$parent_nesting){var self=$klass($base,$super,"LocalVariableAssigns"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return self.$attr_reader("result"),$defs(self,"$find",(function(node){var processor=nil;return(processor=this.$new()).$process(node),processor.$result().$to_a()}),1),$def(self,"$initialize",(function(){return this.result=$$("Set").$new()}),0),$def(self,"$on_lvasgn",(function $$on_lvasgn(node){var $a,name,$yield=$$on_lvasgn.$$p||nil;return delete $$on_lvasgn.$$p,name=null==($a=[].concat($to_a(node)))[0]?nil:$a[0],null==$a[1]?nil:$a[1],this.$result()["$<<"](name),$send2(this,$find_super(this,"on_lvasgn",$$on_lvasgn,!1,!0),"on_lvasgn",[node],$yield)}),1)}($nesting[0],$$("Base"),$nesting)}($nesting[0],$$("Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/explicit_writer_return"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$def=Opal.def,$const_set=Opal.const_set,$truthy=Opal.truthy,$send2=Opal.send2,$find_super=Opal.find_super,$to_a=Opal.to_a,$slice=Opal.slice,$eqeq=Opal.eqeq,$regexp=Opal.regexp,$send=Opal.send;return Opal.add_stubs("require,s,==,to_s,=~,process_all,updated"),self.$require("opal/rewriters/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Rewriters")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super,$parent_nesting){var self=$klass($base,$super,"ExplicitWriterReturn"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return self.$$prototype.in_masgn=nil,$def(self,"$initialize",(function(){return this.in_masgn=!1}),0),$const_set($nesting[0],"TMP_NAME","$writer"),$const_set($nesting[0],"GET_ARGS_NODE",self.$s("lvar",$$("TMP_NAME"))),$const_set($nesting[0],"RETURN_ARGS_NODE",self.$s("jsattr",$$("GET_ARGS_NODE"),self.$s("send",self.$s("jsattr",$$("GET_ARGS_NODE"),self.$s("str","length")),"-",self.$s("int",1)))),$def(self,"$on_send",(function $$on_send(node){var $a,recv,args,$yield=$$on_send.$$p||nil,method_name=nil,set_args_node=nil;return delete $$on_send.$$p,$truthy(this.in_masgn)?$send2(this,$find_super(this,"on_send",$$on_send,!1,!0),"on_send",[node],$yield):(recv=null==($a=[].concat($to_a(node)))[0]?nil:$a[0],method_name=null==$a[1]?nil:$a[1],args=$slice.call($a,2),$truthy(method_name.$to_s()["$=~"]($regexp([$$("REGEXP_START"),"\\w+=",$$("REGEXP_END")])))||$eqeq(method_name.$to_s(),"[]=")?(set_args_node=this.$s("lvasgn",$$("TMP_NAME"),$send(this,"s",["array"].concat($to_a(this.$process_all(args))))),this.$s("begin",set_args_node,node.$updated(nil,[recv,method_name,this.$s("splat",$$("GET_ARGS_NODE"))]),$$("RETURN_ARGS_NODE"))):$send2(this,$find_super(this,"on_send",$$on_send,!1,!0),"on_send",[node],$yield))}),1),$def(self,"$on_masgn",(function $$on_masgn(node){var result,$yield=$$on_masgn.$$p||nil;return delete $$on_masgn.$$p,this.in_masgn=!0,result=$send2(this,$find_super(this,"on_masgn",$$on_masgn,!1,!0),"on_masgn",[node],$yield),this.in_masgn=!1,result}),1)}($nesting[0],$$("Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/regexp_anchors"]=function(Opal){var $nesting=[],$$$=(Opal.nil,Opal.$$$),$module=Opal.module,$const_set=Opal.const_set;return Opal.add_stubs("new"),function($base,$parent_nesting){var self=$module($base,"Opal"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return $const_set(self,"REGEXP_START","^"),$const_set(self,"REGEXP_END","$"),$const_set(self,"FORBIDDEN_STARTING_IDENTIFIER_CHARS","\\u0001-\\u002F\\u003A-\\u0040\\u005B-\\u005E\\u0060\\u007B-\\u007F"),$const_set(self,"FORBIDDEN_ENDING_IDENTIFIER_CHARS","\\u0001-\\u0020\\u0022-\\u002F\\u003A-\\u003E\\u0040\\u005B-\\u005E\\u0060\\u007B-\\u007F"),$const_set(self,"INLINE_IDENTIFIER_REGEXP",$$("Regexp").$new("[^"+$$$(self,"FORBIDDEN_STARTING_IDENTIFIER_CHARS")+"]*[^"+$$$(self,"FORBIDDEN_ENDING_IDENTIFIER_CHARS")+"]")),$const_set(self,"FORBIDDEN_CONST_NAME_CHARS","\\u0001-\\u0020\\u0021-\\u002F\\u003B-\\u003F\\u0040\\u005B-\\u005E\\u0060\\u007B-\\u007F"),$const_set(self,"CONST_NAME_REGEXP",$$("Regexp").$new($$$(self,"REGEXP_START")+"(::)?[A-Z][^"+$$$(self,"FORBIDDEN_CONST_NAME_CHARS")+"]*"+$$$(self,"REGEXP_END")))}($nesting[0],$nesting)},Opal.modules["opal/rewriters/js_reserved_words"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$const_set=Opal.const_set,$regexp=Opal.regexp,$truthy=Opal.truthy,$defs=Opal.defs,$def=Opal.def,$range=Opal.range,$to_a=Opal.to_a,$send2=Opal.send2,$find_super=Opal.find_super,$hash2=Opal.hash2,$alias=Opal.alias;return Opal.add_stubs("require,freeze,=~,!,valid_name?,class,to_sym,valid_ivar_name?,[],to_s,updated,fix_var_name,fix_ivar_name"),self.$require("opal/rewriters/base"),self.$require("opal/regexp_anchors"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Rewriters")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super,$parent_nesting){var self=$klass($base,$super,"JsReservedWords"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return $const_set($nesting[0],"ES51_RESERVED_WORD",$regexp([$$("REGEXP_START"),"(?:do|if|in|for|let|new|try|var|case|else|enum|eval|false|null|this|true|void|with|break|catch|class|const|super|throw|while|yield|delete|export|import|public|return|static|switch|typeof|default|extends|finally|package|private|continue|debugger|function|arguments|interface|protected|implements|instanceof)",$$("REGEXP_END")]).$freeze()),$const_set($nesting[0],"ES3_RESERVED_WORD_EXCLUSIVE",$regexp([$$("REGEXP_START"),"(?:int|byte|char|goto|long|final|float|short|double|native|throws|boolean|abstract|volatile|transient|synchronized)",$$("REGEXP_END")]).$freeze()),$const_set($nesting[0],"PROTO_SPECIAL_PROPS",$regexp([$$("REGEXP_START"),"(?:constructor|displayName|__proto__|__parent__|__noSuchMethod__|__count__)",$$("REGEXP_END")]).$freeze()),$const_set($nesting[0],"PROTO_SPECIAL_METHODS",$regexp([$$("REGEXP_START"),"(?:hasOwnProperty|valueOf)",$$("REGEXP_END")]).$freeze()),$const_set($nesting[0],"IMMUTABLE_PROPS",$regexp([$$("REGEXP_START"),"(?:NaN|Infinity|undefined)",$$("REGEXP_END")]).$freeze()),$const_set($nesting[0],"BASIC_IDENTIFIER_RULES",$regexp([$$("REGEXP_START"),"[$_a-z][$_a-z\\d]*",$$("REGEXP_END")],"i").$freeze()),$const_set($nesting[0],"RESERVED_FUNCTION_NAMES",$regexp([$$("REGEXP_START"),"(?:Array)",$$("REGEXP_END")]).$freeze()),$defs(self,"$valid_name?",(function(name){var $ret_or_1,$ret_or_2=nil,$ret_or_3=nil;return $truthy($ret_or_1=$$("BASIC_IDENTIFIER_RULES")["$=~"](name))?($truthy($ret_or_2=$truthy($ret_or_3=$$("ES51_RESERVED_WORD")["$=~"](name))?$ret_or_3:$$("ES3_RESERVED_WORD_EXCLUSIVE")["$=~"](name))?$ret_or_2:$$("IMMUTABLE_PROPS")["$=~"](name))["$!"]():$ret_or_1}),1),$defs(self,"$valid_ivar_name?",(function(name){var $ret_or_1;return($truthy($ret_or_1=$$("PROTO_SPECIAL_PROPS")["$=~"](name))?$ret_or_1:$$("PROTO_SPECIAL_METHODS")["$=~"](name))["$!"]()}),1),$def(self,"$fix_var_name",(function(name){return $truthy(this.$class()["$valid_name?"](name))?name:(name+"$").$to_sym()}),1),$def(self,"$fix_ivar_name",(function(name){return $truthy(this.$class()["$valid_ivar_name?"](name.$to_s()["$[]"]($range(1,-1,!1))))?name:(name+"$").$to_sym()}),1),$def(self,"$on_lvar",(function $$on_lvar(node){var $a,name;return delete $$on_lvar.$$p,name=null==($a=[].concat($to_a(node)))[0]?nil:$a[0],null==$a[1]?nil:$a[1],node=node.$updated(nil,[this.$fix_var_name(name)]),$send2(this,$find_super(this,"on_lvar",$$on_lvar,!1,!0),"on_lvar",[node],null)}),1),$def(self,"$on_lvasgn",(function $$on_lvasgn(node){var $a,name,value;return delete $$on_lvasgn.$$p,name=null==($a=[].concat($to_a(node)))[0]?nil:$a[0],value=null==$a[1]?nil:$a[1],node=$truthy(value)?node.$updated(nil,[this.$fix_var_name(name),value]):node.$updated(nil,[this.$fix_var_name(name)]),$send2(this,$find_super(this,"on_lvasgn",$$on_lvasgn,!1,!0),"on_lvasgn",[node],null)}),1),$def(self,"$on_ivar",(function $$on_ivar(node){var $a,name;return delete $$on_ivar.$$p,name=null==($a=[].concat($to_a(node)))[0]?nil:$a[0],null==$a[1]?nil:$a[1],node=node.$updated(nil,[this.$fix_ivar_name(name)]),$send2(this,$find_super(this,"on_ivar",$$on_ivar,!1,!0),"on_ivar",[node],null)}),1),$def(self,"$on_ivasgn",(function $$on_ivasgn(node){var $a,name,value;return delete $$on_ivasgn.$$p,name=null==($a=[].concat($to_a(node)))[0]?nil:$a[0],value=null==$a[1]?nil:$a[1],node=$truthy(value)?node.$updated(nil,[this.$fix_ivar_name(name),value]):node.$updated(nil,[this.$fix_ivar_name(name)]),$send2(this,$find_super(this,"on_ivasgn",$$on_ivasgn,!1,!0),"on_ivasgn",[node],null)}),1),$def(self,"$on_restarg",(function(node){var $a,name;return name=null==($a=[].concat($to_a(node)))[0]?nil:$a[0],null==$a[1]?nil:$a[1],$truthy(name)&&(node=node.$updated(nil,[this.$fix_var_name(name)],$hash2(["meta"],{meta:$hash2(["arg_name"],{arg_name:name})}))),node}),1),$alias(self,"on_kwrestarg","on_restarg"),$def(self,"$on_argument",(function $$on_argument(node){var $a,name,value,fixed_name,new_children;return delete $$on_argument.$$p,node=$send2(this,$find_super(this,"on_argument",$$on_argument,!1,!0),"on_argument",[node],null),name=null==($a=[].concat($to_a(node)))[0]?nil:$a[0],value=null==$a[1]?nil:$a[1],fixed_name=this.$fix_var_name(name),new_children=$truthy(value)?[fixed_name,value]:[fixed_name],node.$updated(nil,new_children,$hash2(["meta"],{meta:$hash2(["arg_name"],{arg_name:name})}))}),1)}($nesting[0],$$("Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/block_to_iter"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$to_a=Opal.to_a,$rb_plus=Opal.rb_plus,$def=Opal.def;return Opal.add_stubs("require,s,process,updated,+,children"),self.$require("opal/rewriters/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Rewriters")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"BlockToIter");return $def(self,"$on_block",(function(node){var $a,args,body,iter_node,recvr=nil;return recvr=null==($a=[].concat($to_a(node)))[0]?nil:$a[0],args=null==$a[1]?nil:$a[1],body=null==$a[2]?nil:$a[2],iter_node=this.$s("iter",args,body),this.$process(recvr.$updated(nil,$rb_plus(recvr.$children(),[iter_node])))}),1)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/dot_js_syntax"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$to_a=Opal.to_a,$slice=Opal.slice,$eqeq=Opal.eqeq,$truthy=Opal.truthy,$eqeqeq=Opal.eqeqeq,$neqeq=Opal.neqeq,$send2=Opal.send2,$find_super=Opal.find_super,$def=Opal.def,$send=Opal.send;return Opal.add_stubs("require,==,type,===,!=,size,error,first,to_js_attr_call,to_js_attr_assign_call,to_native_js_call,s"),self.$require("opal/rewriters/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Rewriters")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"DotJsSyntax");return $def(self,"$on_send",(function $$on_send(node){var $a,meth,$yield=$$on_send.$$p||nil,recv=nil,args=nil,recv_of_recv=nil,meth_of_recv=nil,$ret_or_1=nil,property=nil,value=nil;return delete $$on_send.$$p,recv=null==($a=[].concat($to_a(node)))[0]?nil:$a[0],meth=null==$a[1]?nil:$a[1],args=$slice.call($a,2),$truthy(recv)&&$eqeq(recv.$type(),"send")?(recv_of_recv=null==($a=[].concat($to_a(recv)))[0]?nil:$a[0],meth_of_recv=null==$a[1]?nil:$a[1],null==$a[2]?nil:$a[2],$eqeq(meth_of_recv,"JS")?($eqeqeq("[]",$ret_or_1=meth)?($neqeq(args.$size(),1)&&this.$error(".JS[:property] syntax supports only one 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children=[].concat($to_a(node)),children=$send(children,"map",[],this.$method("process").$to_proc()),this.$array(this.$s("sym","find"),$send(this,"array",$to_a(children)))}),1),self.$private(),$def(self,"$array",(function($a){var args,self=this;return args=Opal.slice.call(arguments),self.$to_ast(args)}),-1),$def(self,"$to_ast",(function(val){var $ret_or_1;return $eqeqeq($$("Array"),$ret_or_1=val)?$send(this,"s",["array"].concat($to_a(val))):$eqeqeq($$("Integer"),$ret_or_1)?this.$s("int",val):$eqeqeq(!0,$ret_or_1)?this.$s("true"):$eqeqeq(!1,$ret_or_1)?this.$s("false"):$eqeqeq(nil,$ret_or_1)?this.$s("nil"):nil}),1)}($nesting[0],$$$($$$($Opal,"Rewriters"),"Base"),$nesting)}($nesting[0],$$("Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/rewriters/logical_operator_assignment"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$class_variable_set=Opal.class_variable_set,$defs=Opal.defs,$truthy=Opal.truthy,$class_variable_get=Opal.class_variable_get,$rb_plus=Opal.rb_plus,$const_set=Opal.const_set,$lambda=Opal.lambda,$eqeq=Opal.eqeq,$to_a=Opal.to_a,$slice=Opal.slice,$hash2=Opal.hash2,$send=Opal.send,$def=Opal.def,$send2=Opal.send2,$find_super=Opal.find_super;return Opal.add_stubs("require,+,updated,s,==,include?,[],type,new_temp,freeze,call,fetch,error,process"),self.$require("opal/rewriters/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Rewriters")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super,$parent_nesting){var self=$klass($base,$super,"LogicalOperatorAssignment"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return $defs(self,"$reset_tmp_counter!",(function(){return 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Opal.add_stubs("require,+,updated,[],==,type,new_temp,s,freeze,call,fetch,error,process"),self.$require("opal/rewriters/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Rewriters")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super,$parent_nesting){var self=$klass($base,$super,"BinaryOperatorAssignment"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return $defs(self,"$reset_tmp_counter!",(function(){return $class_variable_set($nesting[0],"@@counter",0)}),0),$defs(self,"$new_temp",(function(){var $ret_or_1=nil;return $class_variable_set($nesting[0],"@@counter",$truthy(null!=$nesting[0].$$cvars["@@counter"]?"class 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function($base,$parent_nesting){var $nesting=[$module($base,"Rewriters")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"DumpArgs");return $def(self,"$on_def",(function $$on_def(node){var $a,args;return delete $$on_def.$$p,node=$send2(this,$find_super(this,"on_def",$$on_def,!1,!0),"on_def",[node],null),null==($a=[].concat($to_a(node)))[0]?nil:$a[0],args=null==$a[1]?nil:$a[1],null==$a[2]?nil:$a[2],node.$updated(nil,nil,$hash2(["meta"],{meta:$hash2(["original_args"],{original_args:args})}))}),1),$def(self,"$on_defs",(function $$on_defs(node){var $a,args;return delete $$on_defs.$$p,node=$send2(this,$find_super(this,"on_defs",$$on_defs,!1,!0),"on_defs",[node],null),null==($a=[].concat($to_a(node)))[0]?nil:$a[0],null==$a[1]?nil:$a[1],args=null==$a[2]?nil:$a[2],null==$a[3]?nil:$a[3],node.$updated(nil,nil,$hash2(["meta"],{meta:$hash2(["original_args"],{original_args:args})}))}),1),$def(self,"$on_iter",(function $$on_iter(node){var 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self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$to_a=Opal.to_a,$truthy=Opal.truthy,$hash2=Opal.hash2,$def=Opal.def,$const_set=Opal.const_set,$send=Opal.send,$eqeq=Opal.eqeq,$Opal=Opal.Opal;return Opal.add_stubs("require,s,new,updated,inline,prepend_to_body,initialization,attr_reader,freeze,children,each,send,any?,blockarg,<<,shadowargs,args,==,[],has_post_args?,length,has_any_kwargs?,can_inline_kwargs?,kwargs,kwoptargs,kwrestarg,postargs,optargs,args_to_keep,restarg"),self.$require("opal/rewriters/base"),self.$require("opal/rewriters/arguments"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Rewriters")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super,$parent_nesting){var 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self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$def=Opal.def,$eqeq=Opal.eqeq,$truthy=Opal.truthy,$range=Opal.range,$to_a=Opal.to_a,$send2=Opal.send2,$find_super=Opal.find_super,$neqeq=Opal.neqeq;return Opal.add_stubs("require,process,s,==,type,last,children,[],updated,!=,class"),self.$require("opal/rewriters/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Rewriters")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super,$parent_nesting){var self=$klass($base,$super,"ForwardArgs"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return $def(self,"$on_forward_args",(function(_node){return this.$process(this.$s("args",this.$s("forward_arg","$")))}),1),$def(self,"$on_args",(function $$on_args(node){var $yield=$$on_args.$$p||nil,prev_children=nil;return delete 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self=$klass($base,$super,"SourceBuffer"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return $defs(self,"$recognize_encoding",(function $$recognize_encoding(string){var $ret_or_1,$yield=$$recognize_encoding.$$p||nil;return delete $$recognize_encoding.$$p,$truthy($ret_or_1=$send2(this,$find_super(this,"recognize_encoding",$$recognize_encoding,!1,!0),"recognize_encoding",[string],$yield))?$ret_or_1:$$$($$("Encoding"),"UTF_8")}),1)}($nesting[0],$$$($$$($$$("Parser"),"Source"),"Buffer"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/parser/default_config"]=function(Opal){var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$module=Opal.module,$send2=Opal.send2,$find_super=Opal.find_super,$send=Opal.send,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$def=Opal.def,$lambda=Opal.lambda,$defs=Opal.defs,$truthy=Opal.truthy,$Opal=Opal.Opal;return Opal.add_stubs("attr_accessor,all_errors_are_fatal=,diagnostics,-,ignore_warnings=,diagnostics_consumer,consumer=,extend,diagnostics_consumer=,new,rewrite,process,default_parser,default_parser_class"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var self=$module($base,"Parser"),$nesting=[self].concat($parent_nesting);return function($base,$parent_nesting){var self=$module($base,"DefaultConfig"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);(function($base){var self=$module($base,"ClassMethods");self.$attr_accessor("diagnostics_consumer"),$def(self,"$default_parser",(function $$default_parser(){var $yield=$$default_parser.$$p||nil,parser=nil,$writer=nil;return delete 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self=$module($base,"Mixin");Opal.udef(self,"$process"),$def(self,"$process",(function(node){var type,on_handler,$ret_or_1=nil,$writer=nil,handler=nil;return null==this._on_handler_cache&&(this._on_handler_cache=nil),$truthy(node["$nil?"]())?nil:(this._on_handler_cache=$truthy($ret_or_1=this._on_handler_cache)?$ret_or_1:$hash2([],{}),type=node.$type(),on_handler=$truthy($ret_or_1=this._on_handler_cache["$[]"](type))?$ret_or_1:($writer=[type,(handler="on_"+type,$truthy(this["$respond_to?"](handler))||(handler="handler_missing"),handler)],$send(this._on_handler_cache,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]),$truthy($ret_or_1=this.$send(on_handler,node))?$ret_or_1:node)}),1)}($$$($$("AST"),"Processor")),function($base,$super){var self=$klass($base,null,"Default");return Opal.udef(self,"$string_value"),$def(self,"$string_value",(function(token){return this.$value(token)}),1)}($$$($$("Parser"),"Builders"))},Opal.modules["opal/parser"]=function(Opal){var self=Opal.top;Opal.nil;return Opal.add_stubs("require"),self.$require("opal/ast/builder"),self.$require("opal/rewriter"),self.$require("opal/parser/source_buffer"),self.$require("opal/parser/default_config"),self.$require("opal/parser/with_ruby_lexer"),self.$require("opal/parser/patch")},Opal.modules["opal/fragment"]=function(Opal){var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$module=Opal.module,$klass=Opal.klass,$def=Opal.def,$eqeqeq=Opal.eqeqeq,$truthy=Opal.truthy,$eqeq=Opal.eqeq,$rb_plus=Opal.rb_plus,$rb_gt=Opal.rb_gt,$to_a=Opal.to_a,$not=Opal.not,$send=Opal.send;return Opal.add_stubs("attr_reader,to_s,inspect,===,type,[],meta,source_map_name_for,sexp,==,class,+,parent,>,!,first,children,loc,respond_to?,dot,selector,operator,begin,line,location,column"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$super,$parent_nesting){var self=$klass($base,null,"Fragment"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;return $proto.code=$proto.scope=$proto.sexp=nil,self.$attr_reader("code"),$def(self,"$initialize",(function(code,scope,sexp){return null==sexp&&(sexp=nil),this.code=code.$to_s(),this.sexp=sexp,this.scope=scope}),-3),$def(self,"$inspect",(function(){return"f("+this.code.$inspect()+")"}),0),$def(self,"$source_map_name_for",(function(sexp){var $a,$ret_or_1,$ret_or_2=nil,scope=nil,iters=nil,level=nil,const$=nil,name=nil;if($eqeqeq("top",$ret_or_1=sexp.$type()))return $eqeqeq("require",$ret_or_2=sexp.$meta()["$[]"]("kind"))?"<top (required)>":$eqeqeq("eval",$ret_or_2)?"(eval)":$eqeqeq("main",$ret_or_2)?"<main>":nil;if($eqeqeq("begin",$ret_or_1)||$eqeqeq("newline",$ret_or_1)||$eqeqeq("js_return",$ret_or_1))return $truthy(this.scope)?this.$source_map_name_for(this.scope.$sexp()):nil;if($eqeqeq("iter",$ret_or_1)){for(scope=this.scope,iters=1;$truthy(scope)&&$eqeq(scope.$class(),$$$($$("Nodes"),"IterNode"));)iters=$rb_plus(iters,1),scope=scope.$parent();return $truthy($rb_gt(iters,1))&&(level=" ("+iters+" levels)"),"block"+level+" in "+this.$source_map_name_for(scope.$sexp())}return 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self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$module=Opal.module,$truthy=Opal.truthy,$def=Opal.def,$rb_plus=Opal.rb_plus,$send=Opal.send,$hash2=Opal.hash2,$to_a=Opal.to_a,$eqeqeq=Opal.eqeqeq,$slice=Opal.slice,$eqeq=Opal.eqeq,$rb_minus=Opal.rb_minus;return Opal.add_stubs("require,valid_name?,inspect,=~,to_s,+,indent,compiler,to_proc,parser_indent,push,fragment,current_indent,js_truthy_optimize,helper,expr,===,type,[],handlers,include?,truthy_optimize?,==,count,<<,method_calls,first,children,s,[]=,meta,-,new_temp,scope,wrap"),self.$require("opal/regexp_anchors"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting);return function($base,$parent_nesting){var self=$module($base,"Helpers"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return $def(self,"$property",(function(name){return 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$nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super,$parent_nesting){var self=$klass($base,$super,"ConstNode"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);self.$handle("const"),self.$children("const_scope","name"),$def(self,"$compile",(function(){return $truthy(this["$magical_data_const?"]())?this.$push("$__END__"):$truthy(this["$optimized_access?"]())?(this.$helper(""+this.$name()),this.$push("$"+this.$name())):$eqeq(this.$const_scope(),this.$s("cbase"))?this.$push(this.$top_scope().$absolute_const()+"('"+this.$name()+"')"):$truthy(this.$const_scope())?this.$push(this.$top_scope().$absolute_const()+"(",this.$recv(this.$const_scope()),", 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class_name;class_name=$eqeqeq(nil,$ret_or_1=rhs)||$eqeqeq(!0,$ret_or_1)||$eqeqeq(!1,$ret_or_1)||$eqeqeq($$$("Integer"),$ret_or_1)||$eqeqeq($$$("Float"),$ret_or_1)?rhs.$inspect():rhs.$$class,$Kernel.$raise($$$("ArgumentError"),"comparison of "+lhs.$class()+" with "+class_name+" failed")}(lhs,rhs),normalize(cmp)}return $def(self,"$==",(function(other){var cmp;return!!$truthy(this["$equal?"](other))||this["$<=>"]!=Opal.Kernel["$<=>"]&&(this.$$comparable?(delete this.$$comparable,!1):!!$truthy(cmp=this["$<=>"](other))&&0==normalize(cmp))}),1),$def(self,"$>",(function(other){return cmp_or_fail(this,other)>0}),1),$def(self,"$>=",(function(other){return cmp_or_fail(this,other)>=0}),1),$def(self,"$<",(function(other){return cmp_or_fail(this,other)<0}),1),$def(self,"$<=",(function(other){return cmp_or_fail(this,other)<=0}),1),$def(self,"$between?",(function(min,max){return!$rb_lt(this,min)&&!$rb_gt(this,max)}),2),$def(self,"$clamp",(function(min,max){var 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null==block_name&&(block_name=nil),scope_name=this.$scope().$identity(),$truthy(block_name)&&($send(this,"block_name=",$to_a($writer=[block_name])),$writer[$rb_minus($writer.length,1)]),this.$add_temp(this.$block_name()+" = "+scope_name+".$$p || nil"),$truthy(this.block_prepared)?nil:(this.$line("delete "+scope_name+".$$p;"),this.block_prepared=!0)}),-1),self.$attr_accessor("await_encountered")}($nesting[0],$$("Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/module"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$to_ary=Opal.to_ary,$truthy=Opal.truthy,$send=Opal.send,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$rb_plus=Opal.rb_plus,$def=Opal.def;return Opal.add_stubs("require,handle,children,name_and_base,helper,nil?,body,stmt?,unshift,line,in_scope,name=,scope,-,compile_body,await_encountered,await_encountered=,parent,+,nesting,private,cid,expr,stmt,returns,compiler,empty_line,add_temp,to_vars"),self.$require("opal/nodes/scope"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"ModuleNode"),$proto=self.$$prototype;return $proto.define_nesting=$proto.define_relative_access=nil,self.$handle("module"),self.$children("cid","body"),$def(self,"$compile",(function(){var $a,$b,name,base,await_begin=nil,await_end=nil,async=nil,$writer=nil;return $b=this.$name_and_base(),$a=$to_ary($b),name=null==$a[0]?nil:$a[0],base=null==$a[1]?nil:$a[1],this.$helper("module"),$truthy(this.$body()["$nil?"]())?$truthy(this["$stmt?"]())?this.$unshift("$module(",base,", '"+name+"')"):this.$unshift("($module(",base,", '"+name+"'), nil)"):(this.$line("  var self = $module($base, '"+name+"');"),$send(this,"in_scope",[],(function $$1(){var $writer,self=null==$$1.$$s?this:$$1.$$s;return $writer=[name],$send(self.$scope(),"name=",$to_a($writer)),$rb_minus($writer.length,1),self.$compile_body()}),{$$arity:0,$$s:this}),$truthy(this.$await_encountered())?(await_begin="(await ",await_end=")",async="async ",$writer=[!0],$send(this.$parent(),"await_encountered=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]):(await_begin=($a=["","",""])[0],await_end=$a[1],async=$a[2]),this.$unshift(await_begin+"("+async+"function($base"+($truthy(this.define_nesting)?", $parent_nesting":nil)+") {"),this.$line("})(",base,($truthy(this.define_nesting)?$rb_plus(", ",this.$scope().$nesting()):nil)+")"+await_end))}),0),self.$private(),$def(self,"$name_and_base",(function(){var $a,$b,name,base=nil;return $b=this.$cid().$children(),base=null==($a=$to_ary($b))[0]?nil:$a[0],name=null==$a[1]?nil:$a[1],$truthy(base["$nil?"]())?[name,this.$scope().$nesting()+"[0]"]:[name,this.$expr(base)]}),0),$def(self,"$compile_body",(function(){var body_code;return body_code=this.$stmt(this.$compiler().$returns(this.$body())),this.$empty_line(),$truthy(this.define_nesting)&&this.$add_temp("$nesting = [self].concat($parent_nesting)"),$truthy(this.define_relative_access)&&this.$add_temp("$$ = Opal.$r($nesting)"),this.$line(this.$scope().$to_vars()),this.$line(body_code)}),0)}($nesting[0],$$("ScopeNode"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/class"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$to_ary=Opal.to_ary,$truthy=Opal.truthy,$send=Opal.send,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$rb_plus=Opal.rb_plus,$def=Opal.def;return Opal.add_stubs("require,handle,children,name_and_base,helper,nil?,body,stmt?,unshift,super_code,line,in_scope,name=,scope,-,compile_body,await_encountered,await_encountered=,parent,+,nesting,sup,expr"),self.$require("opal/nodes/module"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"ClassNode");return self.$$prototype.define_nesting=nil,self.$handle("class"),self.$children("cid","sup","body"),$def(self,"$compile",(function(){var $a,$b,name,base,await_begin=nil,await_end=nil,async=nil,$writer=nil;return $b=this.$name_and_base(),$a=$to_ary($b),name=null==$a[0]?nil:$a[0],base=null==$a[1]?nil:$a[1],this.$helper("klass"),$truthy(this.$body()["$nil?"]())?$truthy(this["$stmt?"]())?this.$unshift("$klass(",base,", ",this.$super_code(),", '"+name+"')"):this.$unshift("($klass(",base,", ",this.$super_code(),", '"+name+"'), nil)"):(this.$line("  var self = $klass($base, $super, '"+name+"');"),$send(this,"in_scope",[],(function $$1(){var $writer,self=null==$$1.$$s?this:$$1.$$s;return $writer=[name],$send(self.$scope(),"name=",$to_a($writer)),$rb_minus($writer.length,1),self.$compile_body()}),{$$arity:0,$$s:this}),$truthy(this.$await_encountered())?(await_begin="(await ",await_end=")",async="async ",$writer=[!0],$send(this.$parent(),"await_encountered=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]):(await_begin=($a=["","",""])[0],await_end=$a[1],async=$a[2]),this.$unshift(await_begin+"("+async+"function($base, $super"+($truthy(this.define_nesting)?", $parent_nesting":nil)+") {"),this.$line("})(",base,", ",this.$super_code(),($truthy(this.define_nesting)?$rb_plus(", ",this.$scope().$nesting()):nil)+")"+await_end))}),0),$def(self,"$super_code",(function(){return $truthy(this.$sup())?this.$expr(this.$sup()):"null"}),0)}($nesting[0],$$("ModuleNode"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/singleton_class"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$send=Opal.send,$truthy=Opal.truthy,$def=Opal.def;return Opal.add_stubs("require,handle,children,push,in_scope,stmt,returns,compiler,body,add_temp,line,to_vars,scope,recv,object,nesting"),self.$require("opal/nodes/scope"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"SingletonClassNode");return self.$handle("sclass"),self.$children("object","body"),$def(self,"$compile",(function(){return this.$push("(function(self, $parent_nesting) {"),$send(this,"in_scope",[],(function $$1(){var body_stmt,self=null==$$1.$$s?this:$$1.$$s;return null==self.define_nesting&&(self.define_nesting=nil),null==self.define_relative_access&&(self.define_relative_access=nil),body_stmt=self.$stmt(self.$compiler().$returns(self.$body())),$truthy(self.define_nesting)&&self.$add_temp("$nesting = [self].concat($parent_nesting)"),$truthy(self.define_relative_access)&&self.$add_temp("$$ = Opal.$r($nesting)"),self.$line(self.$scope().$to_vars()),self.$line(body_stmt)}),{$$arity:0,$$s:this}),this.$line("})(Opal.get_singleton_class(",this.$recv(this.$object()),"), "+this.$scope().$nesting()+")")}),0)}($nesting[0],$$("ScopeNode"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/arg"]=function(Opal){var self=Opal.top,$nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass,$def=Opal.def;return Opal.add_stubs("require,handle,children,add_arg,scope,name,push,to_s"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Args")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"ArgNode");return self.$handle("arg"),self.$children("name"),$def(self,"$compile",(function(){return this.$scope().$add_arg(this.$name()),this.$push(this.$name().$to_s())}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/arity_check"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$to_a=Opal.to_a,$def=Opal.def,$send=Opal.send,$rb_minus=Opal.rb_minus,$truthy=Opal.truthy,$not=Opal.not,$rb_lt=Opal.rb_lt,$rb_plus=Opal.rb_plus,$rb_gt=Opal.rb_gt;return Opal.add_stubs("require,handle,children,new,args_node,args,optargs,restarg,postargs,kwargs,kwoptargs,kwrestarg,kwnilarg,arity,arity=,scope,-,arity_check?,compiler,empty?,arity_checks,helper,inspect,to_s,mid,line,push,join,compact,size,all_args,!,-@,<,+,>,<<,has_only_optional_kwargs?,any?,negative_arity,positive_arity,select,include?,type,has_required_kwargs?,all?,==,def?,class_scope?,top?,parent,class?,name,module?,identity"),self.$require("opal/nodes/base"),self.$require("opal/rewriters/arguments"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super,$parent_nesting){var self=$klass($base,$super,"ArityCheckNode"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;$proto.kwargs=$proto.kwoptargs=$proto.kwrestarg=$proto.all_args=$proto.args=$proto.optargs=$proto.restarg=$proto.postargs=$proto.arity_checks=nil,self.$handle("arity_check"),self.$children("args_node"),$def(self,"$initialize",(function $$initialize($a){var $rest_arg,$yield=$$initialize.$$p||nil,self=this,arguments$=nil;return delete $$initialize.$$p,$rest_arg=Opal.slice.call(arguments),$send2(self,$find_super(self,"initialize",$$initialize,!1,!0),"initialize",$to_a($rest_arg),$yield),arguments$=$$$($$("Rewriters"),"Arguments").$new(self.$args_node().$children()),self.args=arguments$.$args(),self.optargs=arguments$.$optargs(),self.restarg=arguments$.$restarg(),self.postargs=arguments$.$postargs(),self.kwargs=arguments$.$kwargs(),self.kwoptargs=arguments$.$kwoptargs(),self.kwrestarg=arguments$.$kwrestarg(),self.kwnilarg=arguments$.$kwnilarg()}),-1),$def(self,"$compile",(function(){var $writer,meth=nil;return $writer=[this.$arity()],$send(this.$scope(),"arity=",$to_a($writer)),$rb_minus($writer.length,1),$truthy(this.$compiler()["$arity_check?"]())?$truthy(this.$arity_checks()["$empty?"]())?nil:(this.$helper("ac"),meth=this.$scope().$mid().$to_s().$inspect(),this.$line("var $arity = arguments.length;"),this.$push(" if ("+this.$arity_checks().$join(" || ")+") { $ac($arity, "+this.$arity()+", this, "+meth+"); }")):nil}),0),$def(self,"$kwargs",(function(){return[].concat($to_a(this.kwargs)).concat($to_a(this.kwoptargs)).concat([this.kwrestarg]).$compact()}),0),$def(self,"$all_args",(function(){var $ret_or_1;return this.all_args=$truthy($ret_or_1=this.all_args)?$ret_or_1:[].concat($to_a(this.args)).concat($to_a(this.optargs)).concat([this.restarg]).concat($to_a(this.postargs)).concat($to_a(this.$kwargs())).$compact()}),0),$def(self,"$arity_checks",(function(){var $a,arity=nil,min_arity=nil,max_arity=nil;return $truthy(null!=($a=this.arity_checks)&&$a!==nil?"instance-variable":nil)||(arity=this.$all_args().$size(),arity=$rb_minus(arity,this.optargs.$size()),$truthy(this.restarg)&&(arity=$rb_minus(arity,1)),arity=$rb_minus(arity,this.$kwargs().$size()),($not(this.optargs["$empty?"]())||$not(this.$kwargs()["$empty?"]())||$truthy(this.restarg))&&(arity=$rb_minus(arity["$-@"](),1)),this.arity_checks=[],$truthy($rb_lt(arity,0))?(min_arity=$rb_plus(arity,1)["$-@"](),max_arity=this.$all_args().$size(),$truthy($rb_gt(min_arity,0))&&this.arity_checks["$<<"]("$arity < "+min_arity),$truthy(this.restarg)||this.arity_checks["$<<"]("$arity > "+max_arity)):this.arity_checks["$<<"]("$arity !== "+arity)),this.arity_checks}),0),$def(self,"$arity",(function(){return $truthy(this.restarg)||$truthy(this.optargs["$any?"]())||$truthy(this["$has_only_optional_kwargs?"]())?this.$negative_arity():this.$positive_arity()}),0),$def(self,"$negative_arity",(function(){var result=nil;return result=$send(this.$all_args(),"select",[],(function(arg){return null==arg&&(arg=nil),["arg","mlhs"]["$include?"](arg.$type())}),1).$size(),$truthy(this["$has_required_kwargs?"]())&&(result=$rb_plus(result,1)),result=$rb_minus(result["$-@"](),1)}),0),$def(self,"$positive_arity",(function(){var result=nil;return result=this.$all_args().$size(),result=$rb_minus(result,this.$kwargs().$size()),$truthy(this.$kwargs()["$any?"]())&&(result=$rb_plus(result,1)),result}),0),$def(self,"$has_only_optional_kwargs?",(function(){var $ret_or_1;return $truthy($ret_or_1=this.$kwargs()["$any?"]())?$send(this.$kwargs(),"all?",[],(function(arg){return null==arg&&(arg=nil),["kwoptarg","kwrestarg"]["$include?"](arg.$type())}),1):$ret_or_1}),0),$def(self,"$has_required_kwargs?",(function(){return $send(this.$kwargs(),"any?",[],(function(arg){return null==arg&&(arg=nil),arg.$type()["$=="]("kwarg")}),1)}),0)}($nesting[0],$$("Base"),$nesting),function($base,$super){var self=$klass($base,$super,"IterArityCheckNode");return self.$handle("iter_arity_check"),$def(self,"$compile",(function(){var $writer,parent_scope=nil,$ret_or_1=nil,$ret_or_2=nil,context=nil,identity=nil;if($writer=[this.$arity()],$send(this.$scope(),"arity=",$to_a($writer)),$rb_minus($writer.length,1),!$truthy(this.$compiler()["$arity_check?"]()))return nil;if($truthy(this.$arity_checks()["$empty?"]()))return nil;for(parent_scope=this.$scope();!$truthy($truthy($ret_or_1=$truthy($ret_or_2=parent_scope["$def?"]())?$ret_or_2:parent_scope["$class_scope?"]())?$ret_or_1:parent_scope["$top?"]());)parent_scope=parent_scope.$parent();return context=$truthy(parent_scope["$top?"]())?"'<main>'":$truthy(parent_scope["$def?"]())?"'"+parent_scope.$mid()+"'":$truthy(parent_scope["$class?"]())?"'<class:"+parent_scope.$name()+">'":$truthy(parent_scope["$module?"]())?"'<module:"+parent_scope.$name()+">'":nil,identity=this.$scope().$identity(),this.$line("if ("+identity+".$$is_lambda || "+identity+".$$define_meth) {"),this.$line("  var $arity = arguments.length;"),this.$line("  if ("+this.$arity_checks().$join(" || ")+") { Opal.block_ac($arity, "+this.$arity()+", "+context+"); }"),this.$line("}")}),0)}($nesting[0],$$("ArityCheckNode"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/ensure_kwargs_are_kwargs"]=function(Opal){var self=Opal.top,$nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass,$def=Opal.def;return Opal.add_stubs("require,handle,helper,line"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Args")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"EnsureKwargsAreKwargs");return self.$handle("ensure_kwargs_are_kwargs"),$def(self,"$compile",(function(){return this.$helper("hash2"),this.$line("if ($kwargs == null) {"),this.$line("  $kwargs = $hash2([], {});"),this.$line("} else if (!$kwargs.$$is_hash) {"),this.$line("  throw Opal.ArgumentError.$new('expected kwargs');"),this.$line("}")}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/extract_block_arg"]=function(Opal){var self=Opal.top,$nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass,$def=Opal.def;return Opal.add_stubs("require,handle,children,uses_block!,scope,add_arg,name,prepare_block"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Args")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"ExtractBlockarg");return self.$handle("extract_blockarg"),self.$children("name"),$def(self,"$compile",(function(){return this.$scope()["$uses_block!"](),this.$scope().$add_arg(this.$name()),this.$scope().$prepare_block(this.$name())}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/extract_kwarg"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$def=Opal.def;return Opal.add_stubs("require,handle,children,[],meta,<<,used_kwargs,scope,add_temp,lvar_name,line,inspect,to_s"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Args")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"ExtractKwarg");return self.$$prototype.sexp=nil,self.$handle("extract_kwarg"),self.$children("lvar_name"),$def(self,"$compile",(function(){var key_name=nil;return key_name=this.sexp.$meta()["$[]"]("arg_name"),this.$scope().$used_kwargs()["$<<"](key_name),this.$add_temp(this.$lvar_name()),this.$line("if (!Opal.hasOwnProperty.call($kwargs.$$smap, '"+key_name+"')) {"),this.$line("  throw Opal.ArgumentError.$new('missing keyword: "+key_name+"');"),this.$line("}"),this.$line(this.$lvar_name()+" = $kwargs.$$smap["+key_name.$to_s().$inspect()+"];")}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/extract_kwargs"]=function(Opal){var self=Opal.top,$nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass,$def=Opal.def;return Opal.add_stubs("require,handle,add_temp,line"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Args")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"ExtractKwargs");return self.$handle("extract_kwargs"),$def(self,"$compile",(function(){return this.$add_temp("$kwargs"),this.$line("$kwargs = Opal.extract_kwargs($post_args)")}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/extract_kwoptarg"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$eqeq=Opal.eqeq,$def=Opal.def;return Opal.add_stubs("require,handle,children,[],meta,<<,used_kwargs,scope,add_temp,lvar_name,line,inspect,to_s,==,default_value,expr"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Args")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"ExtractKwoptarg");return self.$$prototype.sexp=nil,self.$handle("extract_kwoptarg"),self.$children("lvar_name","default_value"),$def(self,"$compile",(function(){var key_name=nil;return key_name=this.sexp.$meta()["$[]"]("arg_name"),this.$scope().$used_kwargs()["$<<"](key_name),this.$add_temp(this.$lvar_name()),this.$line(this.$lvar_name()+" = $kwargs.$$smap["+key_name.$to_s().$inspect()+"];"),$eqeq(this.$default_value().$children()["$[]"](1),"undefined")?nil:this.$line("if ("+this.$lvar_name()+" == null) "+this.$lvar_name()+" = ",this.$expr(this.$default_value()))}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/extract_kwrestarg"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$def=Opal.def,$send=Opal.send;return Opal.add_stubs("require,handle,children,name,add_temp,line,used_kwargs,map,scope,join"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Args")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"ExtractKwrestarg");return self.$handle("extract_kwrestarg"),self.$children("name"),$def(self,"$compile",(function(){var name,$ret_or_1;return name=$truthy($ret_or_1=this.$name())?$ret_or_1:"$kw_rest_arg",this.$add_temp(name),this.$line(name+" = Opal.kwrestargs($kwargs, "+this.$used_kwargs()+");")}),0),$def(self,"$used_kwargs",(function(){return"{"+$send(this.$scope().$used_kwargs(),"map",[],(function(arg_name){return null==arg_name&&(arg_name=nil),"'"+arg_name+"': true"}),1).$join(",")+"}"}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/extract_optarg"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$eqeq=Opal.eqeq,$def=Opal.def;return Opal.add_stubs("require,handle,children,==,[],default_value,line,name,expr"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Args")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"ExtractOptargNode");return self.$handle("extract_optarg"),self.$children("name","default_value"),$def(self,"$compile",(function(){return $eqeq(this.$default_value().$children()["$[]"](1),"undefined")?nil:this.$line("if ("+this.$name()+" == null) "+this.$name()+" = ",this.$expr(this.$default_value()),";")}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/extract_post_arg"]=function(Opal){var self=Opal.top,$nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass,$def=Opal.def;return Opal.add_stubs("require,handle,children,add_temp,name,line"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Args")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"ExtractPostArg");return self.$handle("extract_post_arg"),self.$children("name"),$def(self,"$compile",(function(){return this.$add_temp(this.$name()),this.$line(this.$name()+" = $post_args.shift();"),this.$line("if ("+this.$name()+" == null) "+this.$name()+" = nil;")}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/extract_post_optarg"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$eqeq=Opal.eqeq,$def=Opal.def;return Opal.add_stubs("require,handle,children,add_temp,name,line,args_to_keep,==,[],default_value,expr"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Args")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"ExtractPostOptarg");return self.$handle("extract_post_optarg"),self.$children("name","default_value","args_to_keep"),$def(self,"$compile",(function(){return this.$add_temp(this.$name()),this.$line("if ($post_args.length > "+this.$args_to_keep()+") "+this.$name()+" = $post_args.shift();"),$eqeq(this.$default_value().$children()["$[]"](1),"undefined")?nil:this.$line("if ("+this.$name()+" == null) "+this.$name()+" = ",this.$expr(this.$default_value()),";")}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/extract_restarg"]=function(Opal){var self=Opal.top,$nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass,$truthy=Opal.truthy,$eqeq=Opal.eqeq,$def=Opal.def;return Opal.add_stubs("require,handle,children,name,add_temp,==,args_to_keep,line"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Args")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"ExtractRestarg");return self.$handle("extract_restarg"),self.$children("name","args_to_keep"),$def(self,"$compile",(function(){var name,$ret_or_1;return name=$truthy($ret_or_1=this.$name())?$ret_or_1:"$rest_arg",this.$add_temp(name),$eqeq(this.$args_to_keep(),0)?this.$line(name+" = $post_args;"):this.$line(name+" = $post_args.splice(0, $post_args.length - "+this.$args_to_keep()+");")}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/fake_arg"]=function(Opal){var self=Opal.top,$nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass,$def=Opal.def;return Opal.add_stubs("require,handle,next_temp,scope,add_arg,push"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Args")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"FakeArgNode");return self.$handle("fake_arg"),$def(self,"$compile",(function(){var name;return name=this.$scope().$next_temp(),this.$scope().$add_arg(name),this.$push(name)}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/initialize_iterarg"]=function(Opal){var self=Opal.top,$nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass,$def=Opal.def;return Opal.add_stubs("require,handle,children,line,name"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Args")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"InitializeIterarg");return self.$handle("initialize_iter_arg"),self.$children("name"),$def(self,"$compile",(function(){return this.$line("if ("+this.$name()+" == null) "+this.$name()+" = nil;")}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/initialize_shadowarg"]=function(Opal){var self=Opal.top,$nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass,$def=Opal.def;return Opal.add_stubs("require,handle,children,<<,locals,scope,name,add_arg,line"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Args")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"InitializeShadowarg");return self.$handle("initialize_shadowarg"),self.$children("name"),$def(self,"$compile",(function(){return this.$scope().$locals()["$<<"](this.$name()),this.$scope().$add_arg(this.$name()),this.$line(this.$name()+" = nil;")}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args/parameters"]=function(Opal){var $nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$def=Opal.def,$send=Opal.send,$to_a=Opal.to_a,$truthy=Opal.truthy,$eqeq=Opal.eqeq;return Opal.add_stubs("children,map,public_send,type,join,compact,=="),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting);return function($base,$parent_nesting){return function($base,$super){var self=$klass($base,null,"Parameters");return self.$$prototype.args=nil,$def(self,"$initialize",(function(args){return this.args=args.$children()}),1),$def(self,"$to_code",(function(){return"["+$send(this.args,"map",[],(function $$1(arg){return null==arg&&(arg=nil),$send(null==$$1.$$s?this:$$1.$$s,"public_send",["on_"+arg.$type()].concat($to_a(arg)))}),{$$arity:1,$$s:this}).$compact().$join(", ")+"]"}),0),$def(self,"$on_arg",(function(arg_name){return"['req', '"+arg_name+"']"}),1),$def(self,"$on_mlhs",(function($a){return Opal.slice.call(arguments),"['req']"}),-1),$def(self,"$on_optarg",(function(arg_name,_default_value){return"['opt', '"+arg_name+"']"}),2),$def(self,"$on_restarg",(function(arg_name){return null==arg_name&&(arg_name=nil),$truthy(arg_name)?($eqeq(arg_name,"fwd_rest_arg")&&(arg_name="*"),"['rest', '"+arg_name+"']"):"['rest']"}),-1),$def(self,"$on_kwarg",(function(arg_name){return"['keyreq', '"+arg_name+"']"}),1),$def(self,"$on_kwoptarg",(function(arg_name,_default_value){return"['key', 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$nesting=[$module($base,"Nodes")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Args")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"PreparePostArgs");return self.$handle("prepare_post_args"),self.$children("offset"),$def(self,"$compile",(function(){return this.$add_temp("$post_args"),$eqeq(this.$offset(),0)?this.$line("$post_args = Opal.slice.call(arguments)"):this.$line("$post_args = Opal.slice.call(arguments, "+this.$offset()+")")}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/args"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$hash2=Opal.hash2,$send=Opal.send,$truthy=Opal.truthy,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$rb_plus=Opal.rb_plus,$rb_gt=Opal.rb_gt,$neqeq=Opal.neqeq,$def=Opal.def;return Opal.add_stubs("require,handle,each_with_index,children,multiple_underscore?,[],[]=,-,+,>,s,type,!=,push,process,==,count,start_with?,to_s,first"),self.$require("opal/nodes/base"),self.$require("opal/nodes/args/arg"),self.$require("opal/nodes/args/arity_check"),self.$require("opal/nodes/args/ensure_kwargs_are_kwargs"),self.$require("opal/nodes/args/extract_block_arg"),self.$require("opal/nodes/args/extract_kwarg"),self.$require("opal/nodes/args/extract_kwargs"),self.$require("opal/nodes/args/extract_kwoptarg"),self.$require("opal/nodes/args/extract_kwrestarg"),self.$require("opal/nodes/args/extract_optarg"),self.$require("opal/nodes/args/extract_post_arg"),self.$require("opal/nodes/args/extract_post_optarg"),self.$require("opal/nodes/args/extract_restarg"),self.$require("opal/nodes/args/fake_arg"),self.$require("opal/nodes/args/initialize_iterarg"),self.$require("opal/nodes/args/initialize_shadowarg"),self.$require("opal/nodes/args/parameters"),self.$require("opal/nodes/args/prepare_post_args"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"ArgsNode");return self.$handle("args"),$def(self,"$compile",(function(){var same_arg_counter=nil;return same_arg_counter=$hash2([],{}),$send(this.$children(),"each_with_index",[],(function $$1(arg,idx){var self=null==$$1.$$s?this:$$1.$$s,$writer=nil;return null==arg&&(arg=nil),null==idx&&(idx=nil),$truthy(self["$multiple_underscore?"](arg))&&($truthy(same_arg_counter["$[]"](arg))||($send(same_arg_counter,"[]=",$to_a($writer=[arg,0])),$writer[$rb_minus($writer.length,1)]),$writer=[arg,$rb_plus(same_arg_counter["$[]"](arg),1)],$send(same_arg_counter,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],$truthy($rb_gt(same_arg_counter["$[]"](arg),1))&&(arg=self.$s(arg.$type(),arg.$children()["$[]"](0)+"_$"+same_arg_counter["$[]"](arg)))),$neqeq(idx,0)&&self.$push(", "),self.$push(self.$process(arg))}),{$$arity:2,$$s:this})}),0),$def(self,"$multiple_underscore?",(function(arg){var $ret_or_1,$ret_or_2,$ret_or_3;return $truthy($ret_or_1=$truthy($ret_or_2=$truthy($ret_or_3=arg.$type()["$=="]("arg"))?arg.$children().$count()["$=="](1):$ret_or_3)?arg.$children().$first().$to_s()["$start_with?"]("_"):$ret_or_2)?$rb_gt(this.$children().$count(arg),1):$ret_or_1}),1)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/node_with_args"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$to_a=Opal.to_a,$def=Opal.def,$truthy=Opal.truthy;return Opal.add_stubs("require,attr_reader,attr_accessor,[],meta,s,original_args,push,process,arity_check_node,uses_block?,scope,prepare_block,to_code,new"),self.$require("opal/nodes/scope"),self.$require("opal/nodes/args/parameters"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super,$parent_nesting){var self=$klass($base,$super,"NodeWithArgs"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return self.$$prototype.sexp=nil,self.$attr_reader("used_kwargs"),self.$attr_accessor("arity"),self.$attr_reader("original_args"),$def(self,"$initialize",(function $$initialize($a){var $rest_arg,$yield=$$initialize.$$p||nil,self=this;return delete $$initialize.$$p,$rest_arg=Opal.slice.call(arguments),$send2(self,$find_super(self,"initialize",$$initialize,!1,!0),"initialize",$to_a($rest_arg),$yield),self.original_args=self.sexp.$meta()["$[]"]("original_args"),self.used_kwargs=[],self.arity=0}),-1),$def(self,"$arity_check_node",(function(){return this.$s("arity_check",this.$original_args())}),0),$def(self,"$compile_arity_check",(function(){return this.$push(this.$process(this.$arity_check_node()))}),0),$def(self,"$compile_block_arg",(function(){return $truthy(this.$scope()["$uses_block?"]())?this.$scope().$prepare_block():nil}),0),$def(self,"$parameters_code",(function(){return $$$($$("Args"),"Parameters").$new(this.$original_args()).$to_code()}),0)}($nesting[0],$$("ScopeNode"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/iter"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send,$eqeq=Opal.eqeq,$rb_gt=Opal.rb_gt,$def=Opal.def;return Opal.add_stubs("require,handle,children,lambda_definition?,scope,is_lambda!,in_scope,identify!,process,inline_args,compile_arity_check,stmt,returned_body,add_temp,to_vars,line,catch_return,unshift,push,await_encountered,<<,arity,self,contains_break?,arity_check?,compiler,parameters_code,has_top_level_mlhs_arg?,has_trailing_comma_in_args?,==,length,>,join,nesting,relative_access,block_arg,prepare_block,each,args,first,updated,body,returns,s,any?,original_args,type,expression,loc,source,match,new,found_break?"),self.$require("opal/nodes/node_with_args"),self.$require("opal/rewriters/break_finder"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super,$parent_nesting){var self=$klass($base,$super,"IterNode"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;return $proto.define_self=$proto.define_nesting=$proto.define_relative_access=$proto.sexp=nil,self.$handle("iter"),self.$children("inline_args","body"),$def(self,"$compile",(function(){var inline_params=nil,to_vars=nil,identity=nil,body_code=nil,blockopts=nil;return $truthy(this.$scope()["$lambda_definition?"]())&&this["$is_lambda!"](),inline_params=nil,to_vars=identity=body_code=nil,$send(this,"in_scope",[],(function $$1(){var self=null==$$1.$$s?this:$$1.$$s;return null==self.define_self&&(self.define_self=nil),identity=self.$scope()["$identify!"](),inline_params=self.$process(self.$inline_args()),self.$compile_arity_check(),body_code=self.$stmt(self.$returned_body()),$truthy(self.define_self)&&self.$add_temp("self = "+identity+".$$s == null ? this : "+identity+".$$s"),to_vars=self.$scope().$to_vars(),self.$line(body_code),$truthy(self.$scope().$catch_return())?(self.$unshift("try {\n"),self.$line("} catch ($returner) { if ($returner === Opal.returner) { return $returner.$v }"),self.$push(" 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"),"}"),$truthy(this.define_nesting)&&this.$scope().$nesting(),$truthy(this.define_relative_access)?this.$scope().$relative_access():nil}),0),$def(self,"$compile_block_arg",(function(){return $truthy(this.$block_arg())?this.$scope().$prepare_block():nil}),0),$def(self,"$extract_underscore_args",(function(){var valid_args=nil,caught_blank_argument=nil;return valid_args=[],caught_blank_argument=!1,$send(this.$args().$children(),"each",[],(function(arg){var arg_name;return null==arg&&(arg=nil),arg_name=arg.$children().$first(),$eqeq(arg_name,"_")?$truthy(caught_blank_argument)?nil:(caught_blank_argument=!0,valid_args["$<<"](arg)):valid_args["$<<"](arg)}),1),this.sexp=this.sexp.$updated(nil,[this.$args().$updated(nil,valid_args),this.$body()])}),0),$def(self,"$returned_body",(function(){var $ret_or_1;return this.$compiler().$returns($truthy($ret_or_1=this.$body())?$ret_or_1:this.$s("nil"))}),0),$def(self,"$has_top_level_mlhs_arg?",(function(){return $send(this.$original_args().$children(),"any?",[],(function(arg){return null==arg&&(arg=nil),arg.$type()["$=="]("mlhs")}),1)}),0),$def(self,"$has_trailing_comma_in_args?",(function(){return $truthy(this.$original_args().$loc())&&$truthy(this.$original_args().$loc().$expression())?this.$original_args().$loc().$expression().$source().$match(/,\s*\|/):nil}),0),$def(self,"$arity_check_node",(function(){return this.$s("iter_arity_check",this.$original_args())}),0),$def(self,"$contains_break?",(function(){var finder=nil;return(finder=$$$($$$($$("Opal"),"Rewriters"),"BreakFinder").$new()).$process(this.sexp),finder["$found_break?"]()}),0)}($nesting[0],$$("NodeWithArgs"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/def"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$send=Opal.send,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$eqeq=Opal.eqeq,$truthy=Opal.truthy,$rb_gt=Opal.rb_gt,$def=Opal.def,$rb_plus=Opal.rb_plus;return Opal.add_stubs("require,handle,children,in_scope,mid,mid=,scope,-,==,type,defs=,identify!,identity,block_name=,process,inline_args,stmt,returns,compiler,stmts,compile_block_arg,add_temp,compile_arity_check,unshift,current_indent,to_vars,line,catch_return,push,await_encountered,<<,arity,arity_check?,parameters_code,parse_comments?,comments_code,enable_source_location?,source_location,length,>,join,wrap_with_definition,nesting,relative_access,helper,wrap,self,expr?,+,map,comments,inspect,text"),self.$require("opal/nodes/node_with_args"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"DefNode"),$proto=self.$$prototype;return $proto.define_nesting=$proto.define_relative_access=nil,self.$handle("def"),self.$children("mid","inline_args","stmts"),$def(self,"$compile",(function(){var inline_params=nil,scope_name=nil,blockopts=nil;return inline_params=nil,scope_name=nil,$send(this,"in_scope",[],(function $$1(){var stmt_code,self=null==$$1.$$s?this:$$1.$$s,$writer=nil;return null==self.sexp&&(self.sexp=nil),null==self.define_self&&(self.define_self=nil),$writer=[self.$mid()],$send(self.$scope(),"mid=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],$eqeq(self.sexp.$type(),"defs")&&($writer=[!0],$send(self.$scope(),"defs=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]),self.$scope()["$identify!"](),scope_name=self.$scope().$identity(),$writer=["$yield"],$send(self.$scope(),"block_name=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],inline_params=self.$process(self.$inline_args()),stmt_code=self.$stmt(self.$compiler().$returns(self.$stmts())),self.$compile_block_arg(),$truthy(self.define_self)&&self.$add_temp("self = this"),self.$compile_arity_check(),self.$unshift("\n"+self.$current_indent(),self.$scope().$to_vars()),self.$line(stmt_code),$truthy(self.$scope().$catch_return())?(self.$unshift("try {\n"),self.$line("} catch ($returner) { if ($returner === Opal.returner) { return $returner.$v }"),self.$push(" throw $returner; }")):nil}),{$$arity:0,$$s:this}),this.$unshift(") {"),this.$unshift(inline_params),this.$unshift("function "+scope_name+"("),$truthy(this.$await_encountered())&&this.$unshift("async "),this.$line("}"),(blockopts=[])["$<<"]("$$arity: "+this.$arity()),$truthy(this.$compiler()["$arity_check?"]())&&blockopts["$<<"]("$$parameters: "+this.$parameters_code()),$truthy(this.$compiler()["$parse_comments?"]())&&blockopts["$<<"]("$$comments: "+this.$comments_code()),$truthy(this.$compiler()["$enable_source_location?"]())&&blockopts["$<<"]("$$source_location: "+this.$source_location()),$eqeq(blockopts.$length(),1)?this.$push(", "+this.$arity()):$truthy($rb_gt(blockopts.$length(),1))&&this.$push(", {",blockopts.$join(", "),"}"),this.$wrap_with_definition(),$truthy(this.define_nesting)&&this.$scope().$nesting(),$truthy(this.define_relative_access)?this.$scope().$relative_access():nil}),0),$def(self,"$wrap_with_definition",(function(){return this.$helper("def"),this.$wrap("$def("+this.$scope().$self()+", '$"+this.$mid()+"', ",")"),$truthy(this["$expr?"]())?nil:this.$unshift("\n"+this.$current_indent())}),0),$def(self,"$comments_code",(function(){return $rb_plus($rb_plus("[",$send(this.$comments(),"map",[],(function(comment){return null==comment&&(comment=nil),comment.$text().$inspect()}),1).$join(", ")),"]")}),0)}($nesting[0],$$("NodeWithArgs"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/defs"]=function(Opal){var self=Opal.top,$nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass,$def=Opal.def;return Opal.add_stubs("require,handle,children,helper,unshift,expr,recvr,mid,push"),self.$require("opal/nodes/def"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"DefsNode");return self.$handle("defs"),self.$children("recvr","mid","inline_args","stmts"),$def(self,"$wrap_with_definition",(function(){return this.$helper("defs"),this.$unshift("$defs(",this.$expr(this.$recvr()),", '$"+this.$mid()+"', "),this.$push(")")}),0)}($nesting[0],$$("DefNode"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/if"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$eqeq=Opal.eqeq,$def=Opal.def,$not=Opal.not,$send=Opal.send,$eqeqeq=Opal.eqeqeq;return Opal.add_stubs("require,handle,children,should_compile_as_simple_expression?,==,true_body,s,compile_with_binary_or,false_body,compile_with_binary_and,compile_with_ternary,compile_with_if,truthy,falsy,!,push,js_truthy,test,indent,line,stmt,type,expects_expression?,await_encountered,scope,wrap,returnify,returns,compiler,expr?,recv?,simple?,expr,[],meta,sexp,===,single_line?,strip_empty_children,all?,helper,new_temp,top_scope,excl,from,to"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super,$parent_nesting){var self=$klass($base,$super,"IfNode"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);self.$handle("if"),self.$children("test","true_body","false_body"),$def(self,"$compile",(function(){return $truthy(this["$should_compile_as_simple_expression?"]())?$eqeq(this.$true_body(),this.$s("true"))?this.$compile_with_binary_or():$eqeq(this.$false_body(),this.$s("false"))?this.$compile_with_binary_and():this.$compile_with_ternary():this.$compile_with_if()}),0),$def(self,"$compile_with_if",(function(){var $a,truthy=nil,falsy=nil;return truthy=this.$truthy(),falsy=this.$falsy(),$truthy(falsy)&&$not(truthy)?(this.$push("if (!",this.$js_truthy(this.$test()),") {"),falsy=($a=[truthy,falsy])[0],truthy=$a[1]):this.$push("if (",this.$js_truthy(this.$test()),") {"),$truthy(truthy)&&$send(this,"indent",[],(function $$1(){var self=null==$$1.$$s?this:$$1.$$s;return self.$line(self.$stmt(truthy))}),{$$arity:0,$$s:this}),$truthy(falsy)?$eqeq(falsy.$type(),"if")?this.$line("} else ",this.$stmt(falsy)):(this.$line("} else {"),$send(this,"indent",[],(function $$2(){var self=null==$$2.$$s?this:$$2.$$s;return self.$line(self.$stmt(falsy))}),{$$arity:0,$$s:this}),this.$line("}")):(this.$line("}"),$truthy(this["$expects_expression?"]())&&this.$line("return nil;")),$truthy(this["$expects_expression?"]())?$truthy(this.$scope().$await_encountered())?this.$wrap("(await (async function() {","})())"):this.$wrap("(function() {","})()"):nil}),0),$def(self,"$truthy",(function(){return this.$returnify(this.$true_body())}),0),$def(self,"$falsy",(function(){return this.$returnify(this.$false_body())}),0),$def(self,"$returnify",(function(body){return $truthy(this["$expects_expression?"]())&&$truthy(body)?this.$compiler().$returns(body):body}),1),$def(self,"$expects_expression?",(function(){var $ret_or_1;return $truthy($ret_or_1=this["$expr?"]())?$ret_or_1:this["$recv?"]()}),0),$def(self,"$should_compile_as_simple_expression?",(function(){var $ret_or_1,$ret_or_2;return $truthy($ret_or_1=$truthy($ret_or_2=this["$expects_expression?"]())?this["$simple?"](this.$true_body()):$ret_or_2)?this["$simple?"](this.$false_body()):$ret_or_1}),0),$def(self,"$compile_with_ternary",(function(){var truthy,falsy=nil,$ret_or_1=nil;return truthy=this.$true_body(),falsy=this.$false_body(),this.$push("("),this.$push(this.$js_truthy(this.$test())," ? "),this.$push("(",this.$expr($truthy($ret_or_1=truthy)?$ret_or_1:this.$s("nil")),") : "),$not(falsy)||$eqeq(falsy.$type(),"if")?this.$push(this.$expr($truthy($ret_or_1=falsy)?$ret_or_1:this.$s("nil"))):this.$push("(",this.$expr($truthy($ret_or_1=falsy)?$ret_or_1:this.$s("nil")),")"),this.$push(")")}),0),$def(self,"$compile_with_binary_and",(function(){var truthy=nil,$ret_or_1=nil;return truthy=$truthy(this.$sexp().$meta()["$[]"]("do_js_truthy_on_true_body"))?this.$js_truthy($truthy($ret_or_1=this.$true_body())?$ret_or_1:this.$s("nil")):this.$expr($truthy($ret_or_1=this.$true_body())?$ret_or_1:this.$s("nil")),this.$push("("),this.$push(this.$js_truthy(this.$test())," && "),this.$push("(",truthy,")"),this.$push(")")}),0),$def(self,"$compile_with_binary_or",(function(){var falsy=nil,$ret_or_1=nil;return falsy=$truthy(this.$sexp().$meta()["$[]"]("do_js_truthy_on_false_body"))?this.$js_truthy($truthy($ret_or_1=this.$false_body())?$ret_or_1:this.$s("nil")):this.$expr($truthy($ret_or_1=this.$false_body())?$ret_or_1:this.$s("nil")),this.$push("("),this.$push(this.$js_truthy(this.$test())," || "),this.$push("(",falsy,")"),this.$push(")")}),0),$def(self,"$simple?",(function(body){var $ret_or_2=nil;return!$eqeqeq($$$($$("AST"),"Node"),body)||!($eqeqeq("return",$ret_or_2=body.$type())||$eqeqeq("js_return",$ret_or_2)||$eqeqeq("break",$ret_or_2)||$eqeqeq("next",$ret_or_2)||$eqeqeq("redo",$ret_or_2)||$eqeqeq("retry",$ret_or_2))&&($eqeqeq("xstr",$ret_or_2)?$$("XStringNode")["$single_line?"]($$("XStringNode").$strip_empty_children(body.$children())):$send(body.$children(),"all?",[],(function $$6(i){return null==i&&(i=nil),(null==$$6.$$s?this:$$6.$$s)["$simple?"](i)}),{$$arity:1,$$s:this}))}),1)}($nesting[0],$$("Base"),$nesting),function($base,$super){var self=$klass($base,$super,"IFlipFlop");self.$handle("iflipflop"),self.$children("from","to"),$def(self,"$excl",(function(){return""}),0),$def(self,"$compile",(function(){var fun_name,ff;return this.$helper("truthy"),ff=(fun_name=this.$top_scope().$new_temp())+".$$ff",this.$push("(typeof "+fun_name+" === 'undefined' ? ("+fun_name+" = function(from, to){"),this.$push("  if (typeof "+ff+" === 'undefined') "+ff+" = false;"),this.$push("  var retval = "+ff+";"),this.$push("  if (!"+ff+") {"),this.$push("    "+ff+" = retval = $truthy(from());"),this.$push("  }"),this.$push("  "+this.$excl()+"if ("+ff+") {"),this.$push("    if ($truthy(to())) "+ff+" = false;"),this.$push("  }"),this.$push("  return retval;"),this.$push("}) : "+fun_name+")("),this.$push("  function() { ",this.$stmt(this.$compiler().$returns(this.$from()))," },"),this.$push("  function() { ",this.$stmt(this.$compiler().$returns(this.$to()))," }"),this.$push(")")}),0)}($nesting[0],$$("Base")),function($base,$super){var self=$klass($base,$super,"EFlipFlop");return self.$handle("eflipflop"),$def(self,"$excl",(function(){return"else "}),0)}($nesting[0],$$("IFlipFlop"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/logic"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$def=Opal.def,$eqeqeq=Opal.eqeqeq,$send=Opal.send,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$rb_gt=Opal.rb_gt,$not=Opal.not;return Opal.add_stubs("require,handle,in_while?,push,iter?,scope,expr_or_nil,value,error,===,size,children,s,first,compile_while,compile_iter,[],while_loop,stmt?,line,break_val,nil?,expr,[]=,-,helper,identity,==,empty_splat?,recv,>,find_parent_def,!,lambda?,def?,expr?,return_in_iter?,return_expr_in_def?,scope_to_catch_return,catch_return=,return_val,to_s"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"NextNode");self.$handle("next"),$def(self,"$compile",(function(){return $truthy(this["$in_while?"]())?this.$push("continue;"):$truthy(this.$scope()["$iter?"]())?this.$push("return ",this.$expr_or_nil(this.$value()),";"):this.$error("Invalid next")}),0),$def(self,"$value",(function(){var $ret_or_1;return $eqeqeq(0,$ret_or_1=this.$children().$size())?this.$s("nil"):$eqeqeq(1,$ret_or_1)?this.$children().$first():$send(this,"s",["array"].concat($to_a(this.$children())))}),0)}($nesting[0],$$("Base")),function($base,$super){var self=$klass($base,$super,"BreakNode");self.$handle("break"),self.$children("value"),$def(self,"$compile",(function(){return $truthy(this["$in_while?"]())?this.$compile_while():$truthy(this.$scope()["$iter?"]())?this.$compile_iter():this.$error("void value expression: cannot use break outside of iter/while")}),0),$def(self,"$compile_while",(function(){return $truthy(this.$while_loop()["$[]"]("closure"))?this.$push("return ",this.$expr_or_nil(this.$value())):this.$push("break;")}),0),$def(self,"$compile_iter",(function(){return $truthy(this["$stmt?"]())||this.$error("break must be used as a statement"),this.$line("Opal.brk(",this.$break_val(),", $brk)")}),0),$def(self,"$break_val",(function(){return $truthy(this.$value()["$nil?"]())?this.$expr(this.$s("nil")):this.$expr(this.$value())}),0)}($nesting[0],$$("Base")),function($base,$super){var self=$klass($base,$super,"RedoNode");self.$handle("redo"),$def(self,"$compile",(function(){return $truthy(this["$in_while?"]())?this.$compile_while():$truthy(this.$scope()["$iter?"]())?this.$compile_iter():this.$push("REDO()")}),0),$def(self,"$compile_while",(function(){var $writer;return $writer=["use_redo",!0],$send(this.$while_loop(),"[]=",$to_a($writer)),$rb_minus($writer.length,1),this.$push(this.$while_loop()["$[]"]("redo_var")+" = true; continue;")}),0),$def(self,"$compile_iter",(function(){return this.$helper("slice"),this.$push("return "+this.$scope().$identity()+".apply(null, $slice.call(arguments))")}),0)}($nesting[0],$$("Base")),function($base,$super){var self=$klass($base,$super,"SplatNode");self.$handle("splat"),self.$children("value"),$def(self,"$empty_splat?",(function(){return this.$value()["$=="](this.$s("array"))}),0),$def(self,"$compile",(function(){return $truthy(this["$empty_splat?"]())?this.$push("[]"):(this.$helper("to_a"),this.$push("$to_a(",this.$recv(this.$value()),")"))}),0)}($nesting[0],$$("Base")),function($base,$super){var self=$klass($base,$super,"ReturnNode");self.$handle("return"),self.$children("value"),$def(self,"$return_val",(function(){return $truthy(this.$value()["$nil?"]())?this.$expr(this.$s("nil")):$truthy($rb_gt(this.$children().$size(),1))?this.$expr($send(this,"s",["array"].concat($to_a(this.$children())))):this.$expr(this.$value())}),0),$def(self,"$return_in_iter?",(function(){var parent_def=nil;return $truthy(this.$scope()["$iter?"]())&&$not(this.$scope()["$lambda?"]())&&$truthy(parent_def=this.$scope().$find_parent_def())?parent_def:nil}),0),$def(self,"$return_expr_in_def?",(function(){return $truthy(this["$expr?"]())&&($truthy(this.$scope()["$def?"]())||$truthy(this.$scope()["$lambda?"]()))?this.$scope():nil}),0),$def(self,"$scope_to_catch_return",(function(){var $ret_or_1;return $truthy($ret_or_1=this["$return_in_iter?"]())?$ret_or_1:this["$return_expr_in_def?"]()}),0),$def(self,"$compile",(function(){var def_scope,$writer=nil;return $truthy(def_scope=this.$scope_to_catch_return())?($send(def_scope,"catch_return=",$to_a($writer=[!0])),$writer[$rb_minus($writer.length,1)],this.$push("Opal.ret(",this.$return_val(),")")):$truthy(this["$stmt?"]())?this.$push("return ",this.$return_val()):this.$error("void value expression: cannot return as an expression")}),0)}($nesting[0],$$("Base")),function($base,$super){var self=$klass($base,$super,"JSReturnNode");self.$handle("js_return"),self.$children("value"),$def(self,"$compile",(function(){return this.$push("return "),this.$push(this.$expr(this.$value()))}),0)}($nesting[0],$$("Base")),function($base,$super){var self=$klass($base,$super,"JSTempNode");self.$handle("js_tmp"),self.$children("value"),$def(self,"$compile",(function(){return this.$push(this.$value().$to_s())}),0)}($nesting[0],$$("Base")),function($base,$super){var self=$klass($base,$super,"BlockPassNode");return self.$handle("block_pass"),self.$children("value"),$def(self,"$compile",(function(){return this.$push(this.$expr(this.$s("send",this.$value(),"to_proc",this.$s("arglist"))))}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/definitions"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$send=Opal.send,$def=Opal.def,$eqeqeq=Opal.eqeqeq,$range=Opal.range,$truthy=Opal.truthy,$rb_gt=Opal.rb_gt,$eqeq=Opal.eqeq,$to_a=Opal.to_a,$slice=Opal.slice,$rb_plus=Opal.rb_plus,$hash2=Opal.hash2,$const_set=Opal.const_set;return Opal.add_stubs("require,handle,children,each,line,self,scope,expr,===,type,new_name,helper,inspect,[],to_s,first,old_name,push,error,empty?,stmt?,compile_children,simple_children?,compile_inline_children,>,size,wrap,==,returned_children,await_encountered,parent,+,returns,compiler,s,process,fragment,freeze,none?,include?,map,each_with_index,reject,to_proc"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"UndefNode");self.$handle("undef"),self.$children("value"),$def(self,"$compile",(function(){return $send(this.$children(),"each",[],(function $$1(child){var self=null==$$1.$$s?this:$$1.$$s;return null==child&&(child=nil),self.$line("Opal.udef("+self.$scope().$self()+", '$' + ",self.$expr(child),");")}),{$$arity:1,$$s:this})}),0)}($nesting[0],$$("Base")),function($base,$super){var self=$klass($base,$super,"AliasNode");self.$handle("alias"),self.$children("new_name","old_name"),$def(self,"$compile",(function(){var $ret_or_1,new_name_str=nil,old_name_str=nil;return $eqeqeq("gvar",$ret_or_1=this.$new_name().$type())?(this.$helper("alias_gvar"),new_name_str=this.$new_name().$children().$first().$to_s()["$[]"]($range(1,-1,!1)).$inspect(),old_name_str=this.$old_name().$children().$first().$to_s()["$[]"]($range(1,-1,!1)).$inspect(),this.$push("$alias_gvar(",new_name_str,", ",old_name_str,")")):$eqeqeq("dsym",$ret_or_1)||$eqeqeq("sym",$ret_or_1)?(this.$helper("alias"),this.$push("$alias("+this.$scope().$self()+", ",this.$expr(this.$new_name()),", ",this.$expr(this.$old_name()),")")):this.$error("Opal doesn't know yet how to alias with "+this.$new_name().$type())}),0)}($nesting[0],$$("Base")),function($base,$super,$parent_nesting){var self=$klass($base,$super,"BeginNode"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;$proto.level=$proto.returned_children=nil,self.$handle("begin"),$def(self,"$compile",(function(){return $truthy(this.$children()["$empty?"]())?this.$push("nil"):$truthy(this["$stmt?"]())?this.$compile_children(this.$children(),this.level):$truthy(this["$simple_children?"]())?(this.$compile_inline_children(this.$children(),this.level),$truthy($rb_gt(this.$children().$size(),1))?this.$wrap("(",")"):nil):$eqeq(this.$children().$size(),1)?this.$compile_inline_children(this.$returned_children(),this.level):(this.$compile_children(this.$returned_children(),this.level),$truthy(this.$scope().$parent().$await_encountered())?this.$wrap("(await (async function() {","})())"):this.$wrap("(function() {","})()"))}),0),$def(self,"$returned_children",(function(){var $a,$b,$ret_or_1,rest=nil,last_child=nil;return 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processed_children=$send(children,"map",[],(function $$5(child){return null==child&&(child=nil),(null==$$5.$$s?this:$$5.$$s).$process(child,level)}),{$$arity:1,$$s:this}),$send($send(processed_children,"reject",[],"empty?".$to_proc()),"each_with_index",[],(function $$6(child,idx){var self=null==$$6.$$s?this:$$6.$$s;return null==child&&(child=nil),null==idx&&(idx=nil),$eqeq(idx,0)||self.$push(self.$fragment(", ",$hash2(["loc"],{loc:!1}))),self.$push(child)}),{$$arity:2,$$s:this})}),2)}($nesting[0],$$("ScopeNode"),$nesting),function($base,$super){return $klass($base,$super,"KwBeginNode").$handle("kwbegin")}($nesting[0],$$("BeginNode"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/yield"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$def=Opal.def;return Opal.add_stubs("require,find_yielding_scope,uses_block!,block_name,block_name=,-,yields_single_arg?,children,push,expr,first,wrap,s,uses_splat?,scope,def?,parent,!,==,size,any?,type,handle,compile_call"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"BaseYieldNode");$def(self,"$compile_call",(function(){var block_name,yielding_scope=nil,$writer=nil;return(yielding_scope=this.$find_yielding_scope())["$uses_block!"](),$truthy(yielding_scope.$block_name())||($send(yielding_scope,"block_name=",$to_a($writer=["$yield"])),$writer[$rb_minus($writer.length,1)]),block_name=yielding_scope.$block_name(),$truthy(this["$yields_single_arg?"](this.$children()))?(this.$push(this.$expr(this.$children().$first())),this.$wrap("Opal.yield1("+block_name+", ",")")):(this.$push(this.$expr($send(this,"s",["arglist"].concat($to_a(this.$children()))))),$truthy(this["$uses_splat?"](this.$children()))?this.$wrap("Opal.yieldX("+block_name+", ",")"):this.$wrap("Opal.yieldX("+block_name+", [","])"))}),0),$def(self,"$find_yielding_scope",(function(){var working=nil;for(working=this.$scope();$truthy(working)&&!$truthy(working.$block_name())&&!$truthy(working["$def?"]());)working=working.$parent();return working}),0),$def(self,"$yields_single_arg?",(function(children){var $ret_or_1;return 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$$7(){var self=null==$$7.$$s?this:$$7.$$s;return self.$push("try {"),$send(self,"indent",[],(function $$8(){var self=null==$$8.$$s?this:$$8.$$s;return self.$line(self.$stmt(self.$body_code()))}),{$$arity:0,$$s:self}),self.$line("} catch ($err) {"),$send(self,"indent",[],(function $$9(){var self=null==$$9.$$s?this:$$9.$$s;return $truthy(self["$has_rescue_else?"]())&&self.$line("$no_errors = false;"),$send(self.$children()["$[]"]($range(1,-1,!1)),"each_with_index",[],(function $$10(child,idx){var self=null==$$10.$$s?this:$$10.$$s;return null==self.level&&(self.level=nil),null==child&&(child=nil),null==idx&&(idx=nil),$truthy(child)&&$eqeq(child.$type(),"resbody")?(!0,$eqeq(idx,0)||self.$push(" else "),self.$line(self.$process(child,self.level))):nil}),{$$arity:2,$$s:self}),self.$push(" else { throw $err; }")}),{$$arity:0,$$s:self}),self.$line("}"),$truthy(self["$handle_rescue_else_manually?"]())&&(self.$push("finally {"),$send(self,"indent",[],(function $$11(){var 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rescue_else_code=this.$scope().$rescue_else_sexp(),$truthy(this["$stmt?"]())||(rescue_else_code=this.$compiler().$returns(rescue_else_code)),rescue_else_code}),0),$def(self,"$handle_rescue_else_manually?",(function(){var $ret_or_1;return $truthy($ret_or_1=this["$in_ensure?"]()["$!"]())?this["$has_rescue_else?"]():$ret_or_1}),0),$def(self,"$gen_retry_id",(function(){var $ret_or_1;return this.retry_id=$truthy($ret_or_1=this.retry_id)?$ret_or_1:this.$scope().$gen_retry_id()}),0),self.$attr_reader("retry_id")}($nesting[0],$$("Base")),function($base,$super){var self=$klass($base,$super,"ResBodyNode");self.$handle("resbody"),self.$children("klasses_sexp","lvar","body"),$def(self,"$compile",(function(){return this.$push("if (Opal.rescue($err, ",this.$expr(this.$klasses()),")) {"),$send(this,"indent",[],(function $$14(){var self=null==$$14.$$s?this:$$14.$$s;return $truthy(self.$lvar())&&self.$push(self.$expr(self.$lvar().$updated(nil,[].concat($to_a(self.$lvar().$children())).concat([self.$s("js_tmp","$err")])))),self.$line("try {"),$send(self,"indent",[],(function $$15(){var self=null==$$15.$$s?this:$$15.$$s;return $send(self,"in_resbody",[],(function $$16(){var self=null==$$16.$$s?this:$$16.$$s;return self.$line(self.$stmt(self.$rescue_body()))}),{$$arity:0,$$s:self})}),{$$arity:0,$$s:self}),self.$line("} finally { Opal.pop_exception(); }")}),{$$arity:0,$$s:this}),this.$line("}")}),0),$def(self,"$klasses",(function(){var $ret_or_1;return $truthy($ret_or_1=this.$klasses_sexp())?$ret_or_1:this.$s("array",this.$s("const",nil,"StandardError"))}),0),$def(self,"$rescue_body",(function(){var $ret_or_1,body_code=nil;return body_code=$truthy($ret_or_1=this.$body())?$ret_or_1:this.$s("nil"),$truthy(this["$stmt?"]())||(body_code=this.$compiler().$returns(body_code)),body_code}),0)}($nesting[0],$$("Base")),function($base,$super){var self=$klass($base,$super,"RetryNode");return self.$handle("retry"),$def(self,"$compile",(function(){return $truthy(this["$in_resbody?"]())||this.$error("Invalid retry"),this.$push("continue "+this.$scope().$current_rescue().$gen_retry_id())}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/super"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$to_a=Opal.to_a,$slice=Opal.slice,$truthy=Opal.truthy,$send=Opal.send,$def=Opal.def,$to_ary=Opal.to_ary,$eqeq=Opal.eqeq,$not=Opal.not,$eqeqeq=Opal.eqeqeq,$rb_plus=Opal.rb_plus,$rb_minus=Opal.rb_minus,$rb_gt=Opal.rb_gt;return Opal.add_stubs("require,include?,type,s,helper,push,compile_receiver,compile_method_body,compile_method_name,compile_arguments,compile_block_pass,private,def?,scope,find_parent_def,to_s,mid,def_scope,identify!,self,method_id,def_scope_identity,defined_check_param,allow_stubs,super_chain,join,map,implicit_arguments_param,super_method_invocation,iter?,super_block_invocation,raise,handle,wrap,uses_block!,compile_using_send,==,iter,block_name,implicit_arglist,!,<<,new,each,children,original_args,[],===,+,[]=,-,>,meta,empty?"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"BaseSuperNode"),$proto=self.$$prototype;$proto.sexp=$proto.def_scope=nil,$def(self,"$initialize",(function $$initialize($a){var 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this.$helper("find_block_super"),$b=this.$scope().$super_chain(),chain=null==($a=$to_ary($b))[0]?nil:$a[0],cur_defn=null==$a[1]?nil:$a[1],mid=null==$a[2]?nil:$a[2],trys=$send(chain,"map",[],(function(c){return null==c&&(c=nil),c+".$$def"}),1).$join(" || "),"$find_block_super("+this.$scope().$self()+", "+mid+", ("+trys+" || "+cur_defn+"), "+this.$defined_check_param()+", "+this.$implicit_arguments_param()+")"}),0),$def(self,"$compile_method_body",(function(){return this.$push(", "),$truthy(this.$scope()["$def?"]())?this.$push(this.$super_method_invocation()):$truthy(this.$scope()["$iter?"]())?this.$push(this.$super_block_invocation()):this.$raise("super must be called from method body or block")}),0),$def(self,"$compile_method_name",(function(){var $a,$b,mid=nil;return $truthy(this.$scope()["$def?"]())?this.$push(", 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Opal.add_stubs("require,handle,children,top_scope=,compiler,-,[],meta,sexp,dynamic_cache_result=,push,version_comment,in_scope,==,body,s,line,use_strict?,stmt,stmts,is_a?,eval?,add_temp,add_used_helpers,to_vars,scope,compile_method_stubs,compile_irb_vars,compile_end_construct,opening,closing,await_encountered,requirable?,unshift,inspect,module_name,file,esm?,returns,irb?,each,to_a,helpers,method_missing?,method_calls,join,map,to_proc,empty?,eof_content"),self.$require("pathname"),self.$require("opal/version"),self.$require("opal/nodes/scope"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super,$parent_nesting){var self=$klass($base,$super,"TopNode"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return self.$handle("top"),self.$children("body"),$def(self,"$compile",(function(){var 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calls=nil,stubs=nil;return $truthy(this.$compiler()["$method_missing?"]())?(calls=this.$compiler().$method_calls(),stubs=$send(calls.$to_a(),"map",[],"to_s".$to_proc()).$join(","),$truthy(stubs["$empty?"]())?nil:this.$line("Opal.add_stubs('"+stubs+"');")):nil}),0),$def(self,"$compile_end_construct",(function(){var content=nil;return $truthy(content=this.$compiler().$eof_content())?(this.$line("var $__END__ = Opal.Object.$new();"),this.$line("$__END__.$read = function() { return "+content.$inspect()+"; };")):nil}),0),$def(self,"$version_comment",(function(){return"/* Generated by Opal "+$$$($$("Opal"),"VERSION")+" */"}),0)}($nesting[0],$$("ScopeNode"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/while"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$send=Opal.send,$truthy=Opal.truthy,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$def=Opal.def;return Opal.add_stubs("require,handle,children,js_truthy,test,with_temp,in_while,compiler,wrap_in_closure?,[]=,while_loop,-,indent,stmt,body,uses_redo?,compile_with_redo,compile_without_redo,await_encountered,scope,wrap,private,push,compile_while,while_open,while_close,line,[],expr?,recv?"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"WhileNode");self.$handle("while"),self.$children("test","body"),$def(self,"$compile",(function(){var test_code;return test_code=this.$js_truthy(this.$test()),$send(this,"with_temp",[],(function $$1(redo_var){var self=null==$$1.$$s?this:$$1.$$s;return null==redo_var&&(redo_var=nil),$send(self.$compiler(),"in_while",[],(function $$2(){var body_code,self=null==$$2.$$s?this:$$2.$$s,$writer=nil;return 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self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$to_a=Opal.to_a,$send=Opal.send,$eqeqeq=Opal.eqeqeq,$def=Opal.def,$truthy=Opal.truthy,$eqeq=Opal.eqeq,$to_ary=Opal.to_ary,$hash2=Opal.hash2,$rb_minus=Opal.rb_minus;return Opal.add_stubs("require,handle,attr_accessor,each,children,===,type,<<,[],all?,keys,include?,has_kwsplat,compile_merge,simple_keys?,compile_hash2,compile_hash,helper,==,empty?,expr,s,each_with_index,push,wrap,times,size,inspect,to_s,values,[]=,-,join,value"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"HashNode");self.$handle("hash"),self.$attr_accessor("has_kwsplat","keys","values"),$def(self,"$initialize",(function $$initialize($a){var 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this.$helper("hash"),$send(this.$children(),"each_with_index",[],(function $$6(pair,idx){var $a,$b,key,value,self=null==$$6.$$s?this:$$6.$$s;return null==pair&&(pair=nil),null==idx&&(idx=nil),$b=pair.$children(),key=null==($a=$to_ary($b))[0]?nil:$a[0],value=null==$a[1]?nil:$a[1],$eqeq(idx,0)||self.$push(", "),self.$push(self.$expr(key),", ",self.$expr(value))}),{$$arity:2,$$s:this}),this.$wrap("$hash(",")")}),0),$def(self,"$compile_hash2",(function(){var $a,hash_obj=nil,hash_keys=nil;return $a=[$hash2([],{}),[]],hash_obj=$a[0],hash_keys=$a[1],this.$helper("hash2"),$send(this.$keys().$size(),"times",[],(function $$7(idx){var key,$writer,self=null==$$7.$$s?this:$$7.$$s;return null==idx&&(idx=nil),key=self.$keys()["$[]"](idx).$children()["$[]"](0).$to_s().$inspect(),$truthy(hash_obj["$include?"](key))||hash_keys["$<<"](key),$writer=[key,self.$expr(self.$values()["$[]"](idx))],$send(hash_obj,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]}),{$$arity:1,$$s:this}),$send(hash_keys,"each_with_index",[],(function $$8(key,idx){var self=null==$$8.$$s?this:$$8.$$s;return null==key&&(key=nil),null==idx&&(idx=nil),$eqeq(idx,0)||self.$push(", "),self.$push(key+": "),self.$push(hash_obj["$[]"](key))}),{$$arity:2,$$s:this}),this.$wrap("$hash2(["+hash_keys.$join(", ")+"], {","})")}),0)}($nesting[0],$$("Base")),function($base,$super){var self=$klass($base,$super,"KwSplatNode");return self.$handle("kwsplat"),self.$children("value"),$def(self,"$compile",(function(){return this.$push("Opal.to_hash(",this.$expr(this.$value()),")")}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/array"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send,$def=Opal.def;return Opal.add_stubs("require,handle,empty?,children,push,each,==,type,expr,<<,fragment"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"ArrayNode");return self.$handle("array"),$def(self,"$compile",(function(){var $a,code=nil,work=nil,join=nil;return $truthy(this.$children()["$empty?"]())?this.$push("[]"):(code=($a=[[],[]])[0],work=$a[1],$send(this.$children(),"each",[],(function $$1(child){var splat,part,self=null==$$1.$$s?this:$$1.$$s;return null==child&&(child=nil),splat=child.$type()["$=="]("splat"),part=self.$expr(child),$truthy(splat)?($truthy(work["$empty?"]())?$truthy(code["$empty?"]())?code["$<<"](self.$fragment("[].concat("))["$<<"](part)["$<<"](self.$fragment(")")):code["$<<"](self.$fragment(".concat("))["$<<"](part)["$<<"](self.$fragment(")")):($truthy(code["$empty?"]())?code["$<<"](self.$fragment("["))["$<<"](work)["$<<"](self.$fragment("]")):code["$<<"](self.$fragment(".concat(["))["$<<"](work)["$<<"](self.$fragment("])")),code["$<<"](self.$fragment(".concat("))["$<<"](part)["$<<"](self.$fragment(")"))),work=[]):($truthy(work["$empty?"]())||work["$<<"](self.$fragment(", 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Opal.add_stubs("require,handle,children,===,type,value,push,inspect,to_s,==,[],size,compile_defined_send,wrap,compile_defined_ivar,compile_defined_super,compile_defined_yield,compile_defined_xstr,compile_defined_const,compile_defined_cvar,compile_defined_gvar,compile_defined_back_ref,compile_defined_nth_ref,compile_defined_array,respond_to?,__send__,new_temp,scope,expr,wrap_with_try_catch,mid_to_jsid,compile_defined,compile_send_recv_doesnt_raise,self,each,s,uses_block!,block_name,find_parent_def,nil?,relative_access,absolute_const,top_scope,class_variable_owner,helper,include?,each_with_index"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"DefinedNode");return self.$handle("defined?"),self.$children("value"),$def(self,"$compile",(function(){var $ret_or_1;return $eqeqeq("self",$ret_or_1=this.$value().$type())||$eqeqeq("nil",$ret_or_1)||$eqeqeq("false",$ret_or_1)||$eqeqeq("true",$ret_or_1)?this.$push(this.$value().$type().$to_s().$inspect()):$eqeqeq("lvasgn",$ret_or_1)||$eqeqeq("ivasgn",$ret_or_1)||$eqeqeq("gvasgn",$ret_or_1)||$eqeqeq("cvasgn",$ret_or_1)||$eqeqeq("casgn",$ret_or_1)||$eqeqeq("op_asgn",$ret_or_1)||$eqeqeq("or_asgn",$ret_or_1)||$eqeqeq("and_asgn",$ret_or_1)?this.$push("'assignment'"):$eqeqeq("lvar",$ret_or_1)?this.$push("'local-variable'"):$eqeqeq("begin",$ret_or_1)?$eqeq(this.$value().$children().$size(),1)&&$eqeq(this.$value().$children()["$[]"](0).$type(),"masgn")?this.$push("'assignment'"):this.$push("'expression'"):$eqeqeq("send",$ret_or_1)?(this.$compile_defined_send(this.$value()),this.$wrap("("," ? 'method' : nil)")):$eqeqeq("ivar",$ret_or_1)?(this.$compile_defined_ivar(this.$value()),this.$wrap("("," ? 'instance-variable' : nil)")):$eqeqeq("zsuper",$ret_or_1)||$eqeqeq("super",$ret_or_1)?this.$compile_defined_super():$eqeqeq("yield",$ret_or_1)?(this.$compile_defined_yield(),this.$wrap("("," ? 'yield' : nil)")):$eqeqeq("xstr",$ret_or_1)?this.$compile_defined_xstr(this.$value()):$eqeqeq("const",$ret_or_1)?(this.$compile_defined_const(this.$value()),this.$wrap("("," ? 'constant' : nil)")):$eqeqeq("cvar",$ret_or_1)?(this.$compile_defined_cvar(this.$value()),this.$wrap("("," ? 'class variable' : nil)")):$eqeqeq("gvar",$ret_or_1)?(this.$compile_defined_gvar(this.$value()),this.$wrap("("," ? 'global-variable' : nil)")):$eqeqeq("back_ref",$ret_or_1)?(this.$compile_defined_back_ref(),this.$wrap("("," ? 'global-variable' : nil)")):$eqeqeq("nth_ref",$ret_or_1)?(this.$compile_defined_nth_ref(),this.$wrap("("," ? 'global-variable' : nil)")):$eqeqeq("array",$ret_or_1)?(this.$compile_defined_array(this.$value()),this.$wrap("("," ? 'expression' : nil)")):this.$push("'expression'")}),0),$def(self,"$compile_defined",(function(node){var type,node_tmp=nil;return type=node.$type(),$truthy(this["$respond_to?"]("compile_defined_"+type))?this.$__send__("compile_defined_"+type,node):(node_tmp=this.$scope().$new_temp(),this.$push("("+node_tmp+" = ",this.$expr(node),")"),node_tmp)}),1),$def(self,"$wrap_with_try_catch",(function(code){var returning_tmp;return returning_tmp=this.$scope().$new_temp(),this.$push("("+returning_tmp+" = (function() { try {"),this.$push("  return "+code+";"),this.$push("} catch ($err) {"),this.$push("  if (Opal.rescue($err, [Opal.Exception])) {"),this.$push("    try {"),this.$push("      return false;"),this.$push("    } finally { Opal.pop_exception() }"),this.$push("  } else { throw $err; }"),this.$push("}})())"),returning_tmp}),1),$def(self,"$compile_send_recv_doesnt_raise",(function(recv_code){return this.$wrap_with_try_catch(recv_code)}),1),$def(self,"$compile_defined_send",(function(node){var $a,args,mid,recv_value_tmp,meth_tmp,recv=nil,method_name=nil,recv_code=nil,recv_tmp=nil;return recv=null==($a=[].concat($to_a(node)))[0]?nil:$a[0],method_name=null==$a[1]?nil:$a[1],args=$slice.call($a,2),mid=this.$mid_to_jsid(method_name.$to_s()),$truthy(recv)?(recv_code=this.$compile_defined(recv),this.$push(" && "),$eqeq(recv.$type(),"send")&&(recv_code=this.$compile_send_recv_doesnt_raise(recv_code),this.$push(" && ")),recv_tmp=this.$scope().$new_temp(),this.$push("("+recv_tmp+" = ",recv_code,", "+recv_tmp+") && ")):recv_tmp=this.$scope().$self(),recv_value_tmp=this.$scope().$new_temp(),this.$push("("+recv_value_tmp+" = "+recv_tmp+") && "),meth_tmp=this.$scope().$new_temp(),this.$push("((("+meth_tmp+" = "+recv_value_tmp+mid+") && !"+meth_tmp+".$$stub)"),this.$push(" || "+recv_value_tmp+"['$respond_to_missing?']('"+method_name+"'))"),$send(args,"each",[],(function $$1(arg){var self=null==$$1.$$s?this:$$1.$$s;return null==arg&&(arg=nil),$eqeqeq("block_pass",arg.$type())?nil:(self.$push(" && "),self.$compile_defined(arg))}),{$$arity:1,$$s:this}),this.$wrap("(",")"),meth_tmp+"()"}),1),$def(self,"$compile_defined_ivar",(function(node){var name,tmp;return name=node.$children()["$[]"](0).$to_s()["$[]"]($range(1,-1,!1)),tmp=this.$scope().$new_temp(),this.$push("("+tmp+" = "+this.$scope().$self()+"['"+name+"'], "+tmp+" != null && "+tmp+" !== nil)"),tmp}),1),$def(self,"$compile_defined_super",(function(){return this.$push(this.$expr(this.$s("defined_super")))}),0),$def(self,"$compile_defined_yield",(function(){var block_name,$ret_or_1;return this.$scope()["$uses_block!"](),block_name=$truthy($ret_or_1=this.$scope().$block_name())?$ret_or_1:this.$scope().$find_parent_def().$block_name(),this.$push("("+block_name+" != null && "+block_name+" !== nil)"),block_name}),0),$def(self,"$compile_defined_xstr",(function(node){return this.$push("(typeof(",this.$expr(node),') !== "undefined")')}),1),$def(self,"$compile_defined_const",(function(node){var $a,const_name,const_tmp,const_scope=nil,const_scope_tmp=nil;return const_scope=null==($a=[].concat($to_a(node)))[0]?nil:$a[0],const_name=null==$a[1]?nil:$a[1],const_tmp=this.$scope().$new_temp(),$truthy(const_scope["$nil?"]())?this.$push("("+const_tmp+" = "+this.$scope().$relative_access()+"('"+const_name+"', 'skip_raise'))"):$eqeq(const_scope,this.$s("cbase"))?this.$push("("+const_tmp+" = "+this.$top_scope().$absolute_const()+"('::', '"+const_name+"', 'skip_raise'))"):(const_scope_tmp=this.$compile_defined(const_scope),this.$push(" && ("+const_tmp+" = "+this.$top_scope().$absolute_const()+"("+const_scope_tmp+", '"+const_name+"', 'skip_raise'))")),const_tmp}),1),$def(self,"$compile_defined_cvar",(function(node){var $a,cvar_name,cvar_tmp;return cvar_name=null==($a=[].concat($to_a(node)))[0]?nil:$a[0],null==$a[1]?nil:$a[1],cvar_tmp=this.$scope().$new_temp(),this.$push("("+cvar_tmp+" = "+this.$class_variable_owner()+".$$cvars['"+cvar_name+"'], "+cvar_tmp+" != null)"),cvar_tmp}),1),$def(self,"$compile_defined_gvar",(function(node){var gvar_temp,name=nil;return this.$helper("gvars"),name=node.$children()["$[]"](0).$to_s()["$[]"]($range(1,-1,!1)),gvar_temp=this.$scope().$new_temp(),$truthy(["~","!"]["$include?"](name))?this.$push("("+gvar_temp+" = ",this.$expr(node)," || true)"):this.$push("("+gvar_temp+" = $gvars["+name.$inspect()+"], "+gvar_temp+" != null)"),gvar_temp}),1),$def(self,"$compile_defined_back_ref",(function(){var back_ref_temp;return this.$helper("gvars"),back_ref_temp=this.$scope().$new_temp(),this.$push("("+back_ref_temp+" = $gvars['~'], "+back_ref_temp+" != null && "+back_ref_temp+" !== nil)"),back_ref_temp}),0),$def(self,"$compile_defined_nth_ref",(function(){var nth_ref_tmp;return this.$helper("gvars"),nth_ref_tmp=this.$scope().$new_temp(),this.$push("("+nth_ref_tmp+" = $gvars['~'], "+nth_ref_tmp+" != null && "+nth_ref_tmp+" != nil)"),nth_ref_tmp}),0),$def(self,"$compile_defined_array",(function(node){return $send(node.$children(),"each_with_index",[],(function $$2(child,idx){var self=null==$$2.$$s?this:$$2.$$s;return null==child&&(child=nil),null==idx&&(idx=nil),$eqeq(idx,0)||self.$push(" && "),self.$compile_defined(child)}),{$$arity:2,$$s:this})}),1)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/masgn"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$const_set=Opal.const_set,$eqeq=Opal.eqeq,$truthy=Opal.truthy,$send=Opal.send,$def=Opal.def,$rb_ge=Opal.rb_ge,$not=Opal.not,$rb_plus=Opal.rb_plus;return Opal.add_stubs("require,freeze,handle,children,new_temp,scope,==,type,rhs,push,expr,any?,size,compile_masgn,lhs,helper,queue_temp,take_while,!=,drop,each_with_index,compile_assignment,empty?,shift,[],<<,dup,s,>=,!,updated,include?,+,last,raise"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super,$parent_nesting){var self=$klass($base,$super,"MassAssignNode"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return $const_set($nesting[0],"SIMPLE_ASSIGNMENT",["lvasgn","ivasgn","lvar","gvasgn","cdecl","casgn"].$freeze()),self.$handle("masgn"),self.$children("lhs","rhs"),$def(self,"$compile",(function(){var array,rhs_len=nil,retval=nil;return array=this.$scope().$new_temp(),$eqeq(this.$rhs().$type(),"array")?(this.$push(array+" = ",this.$expr(this.$rhs())),rhs_len=$truthy($send(this.$rhs().$children(),"any?",[],(function(c){return null==c&&(c=nil),c.$type()["$=="]("splat")}),1))?nil:this.$rhs().$children().$size(),this.$compile_masgn(this.$lhs().$children(),array,rhs_len),this.$push(", "+array)):(this.$helper("to_ary"),retval=this.$scope().$new_temp(),this.$push(retval+" = ",this.$expr(this.$rhs())),this.$push(", "+array+" = $to_ary("+retval+")"),this.$compile_masgn(this.$lhs().$children(),array),this.$push(", "+retval),this.$scope().$queue_temp(retval)),this.$scope().$queue_temp(array)}),0),$def(self,"$compile_masgn",(function(lhs_items,array,len){var pre_splat=nil,post_splat=nil,splat=nil,part=nil,tmp=nil;return null==len&&(len=nil),pre_splat=$send(lhs_items,"take_while",[],(function(child){return null==child&&(child=nil),child.$type()["$!="]("splat")}),1),post_splat=lhs_items.$drop(pre_splat.$size()),$send(pre_splat,"each_with_index",[],(function $$3(child,idx){return null==child&&(child=nil),null==idx&&(idx=nil),(null==$$3.$$s?this:$$3.$$s).$compile_assignment(child,array,idx,len)}),{$$arity:2,$$s:this}),$truthy(post_splat["$empty?"]())?nil:(splat=post_splat.$shift(),$truthy(post_splat["$empty?"]())?$truthy(part=splat.$children()["$[]"](0))?(this.$helper("slice"),part=part.$dup()["$<<"](this.$s("js_tmp","$slice.call("+array+", "+pre_splat.$size()+")")),this.$push(", "),this.$push(this.$expr(part))):nil:(tmp=this.$scope().$new_temp(),this.$push(", "+tmp+" = "+array+".length - "+post_splat.$size()),this.$push(", "+tmp+" = ("+tmp+" < "+pre_splat.$size()+") ? "+pre_splat.$size()+" : "+tmp),$truthy(part=splat.$children()["$[]"](0))&&(this.$helper("slice"),part=part.$dup()["$<<"](this.$s("js_tmp","$slice.call("+array+", "+pre_splat.$size()+", "+tmp+")")),this.$push(", "),this.$push(this.$expr(part))),$send(post_splat,"each_with_index",[],(function $$4(child,idx){var self=null==$$4.$$s?this:$$4.$$s;return null==child&&(child=nil),null==idx&&(idx=nil),$eqeq(idx,0)?self.$compile_assignment(child,array,tmp):self.$compile_assignment(child,array,tmp+" + "+idx)}),{$$arity:2,$$s:this}),this.$scope().$queue_temp(tmp)))}),-3),$def(self,"$compile_assignment",(function(child,array,idx,len){var assign=nil,part=nil,tmp=nil;if(null==len&&(len=nil),assign=$not(len)||$truthy($rb_ge(idx,len))?this.$s("js_tmp","("+array+"["+idx+"] == null ? nil : "+array+"["+idx+"])"):this.$s("js_tmp",array+"["+idx+"]"),part=child.$updated(),$truthy($$("SIMPLE_ASSIGNMENT")["$include?"](child.$type())))part=part.$updated(nil,$rb_plus(part.$children(),[assign]));else if($eqeq(child.$type(),"send"))part=part.$updated(nil,$rb_plus(part.$children(),[assign]));else if($eqeq(child.$type(),"attrasgn"))part.$last()["$<<"](assign);else{if($eqeq(child.$type(),"mlhs"))return this.$helper("to_ary"),tmp=this.$scope().$new_temp(),this.$push(", ("+tmp+" = $to_ary("+assign.$children()["$[]"](0)+")"),this.$compile_masgn(child.$children(),tmp),this.$push(")"),this.$scope().$queue_temp(tmp),nil;this.$raise("Bad child node in masgn LHS: "+child+". LHS: "+this.$lhs())}return this.$push(", "),this.$push(this.$expr(part))}),-4)}($nesting[0],$$("Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/arglist"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$send=Opal.send,$truthy=Opal.truthy,$to_a=Opal.to_a,$def=Opal.def;return Opal.add_stubs("require,handle,each,children,==,type,expr,empty?,<<,fragment,push"),self.$require("opal/nodes/base"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"ArglistNode");return self.$handle("arglist"),$def(self,"$compile",(function(){var $a,code=nil,work=nil,join=nil;return code=($a=[[],[]])[0],work=$a[1],$send(this.$children(),"each",[],(function $$1(current){var splat,arg,self=null==$$1.$$s?this:$$1.$$s;return null==current&&(current=nil),splat=current.$type()["$=="]("splat"),arg=self.$expr(current),$truthy(splat)?($truthy(work["$empty?"]())?$truthy(code["$empty?"]())?code["$<<"](arg):code["$<<"](self.$fragment(".concat("))["$<<"](arg)["$<<"](self.$fragment(")")):($truthy(code["$empty?"]())?code["$<<"](self.$fragment("["))["$<<"](work)["$<<"](self.$fragment("]")):code["$<<"](self.$fragment(".concat(["))["$<<"](work)["$<<"](self.$fragment("])")),code["$<<"](self.$fragment(".concat("))["$<<"](arg)["$<<"](self.$fragment(")"))),work=[]):($truthy(work["$empty?"]())||work["$<<"](self.$fragment(", ")),work["$<<"](arg))}),{$$arity:1,$$s:this}),$truthy(work["$empty?"]())||(join=work,$truthy(code["$empty?"]())?code=join:code["$<<"](this.$fragment(".concat(["))["$<<"](join)["$<<"](this.$fragment("])"))),$send(this,"push",$to_a(code))}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/x_string"]=function(Opal){var $nesting=[],nil=Opal.nil,$module=Opal.module,$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send,$def=Opal.def,$defs=Opal.defs,$lambda=Opal.lambda,$eqeqeq=Opal.eqeqeq,$eqeq=Opal.eqeq,$not=Opal.not,$range=Opal.range;return Opal.add_stubs("handle,unpack_return,children,strip_empty_children,single_line?,compile_single_line,each,compile_child,recv?,wrap,push,==,size,none?,type,end_with?,source,expression,loc,dup,nil?,empty?,rstrip,any?,[],first,shift,last,pop,private,===,include?,self,scope,new,expr,raise,s,strip,=~,!,extract_last_value,expr?,warning,compiler,line"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super,$parent_nesting){var self=$klass($base,$super,"XStringNode"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;return $proto.should_add_semicolon=$proto.returning=nil,self.$handle("xstr"),$def(self,"$compile",(function(){var unpacked_children,stripped_children;return this.should_add_semicolon=!1,unpacked_children=this.$unpack_return(this.$children()),stripped_children=$$("XStringNode").$strip_empty_children(unpacked_children),$truthy($$("XStringNode")["$single_line?"](stripped_children))?this.$compile_single_line(stripped_children):$send(unpacked_children,"each",[],(function $$1(c){return null==c&&(c=nil),(null==$$1.$$s?this:$$1.$$s).$compile_child(c)}),{$$arity:1,$$s:this}),$truthy(this["$recv?"]())&&this.$wrap("(",")"),$truthy(this.should_add_semicolon)?this.$push(";"):nil}),0),$defs(self,"$single_line?",(function(children){var $ret_or_1;return $truthy($ret_or_1=children.$size()["$=="](1))?$ret_or_1:$send(children,"none?",[],(function(c){var $ret_or_2;return null==c&&(c=nil),$truthy($ret_or_2=c.$type()["$=="]("str"))?c.$loc().$expression().$source()["$end_with?"]("\n"):$ret_or_2}),1)}),1),$defs(self,"$strip_empty_children",(function(children){var empty_line=nil,$ret_or_1=nil;for(children=children.$dup(),empty_line=$lambda((function(child){var $ret_or_1,$ret_or_2=nil;return null==child&&(child=nil),$truthy($ret_or_1=child["$nil?"]())?$ret_or_1:$truthy($ret_or_2=child.$type()["$=="]("str"))?child.$loc().$expression().$source().$rstrip()["$empty?"]():$ret_or_2}),1);$truthy($truthy($ret_or_1=children["$any?"]())?empty_line["$[]"](children.$first()):$ret_or_1);)children.$shift();for(;$truthy($truthy($ret_or_1=children["$any?"]())?empty_line["$[]"](children.$last()):$ret_or_1);)children.$pop();return children}),1),self.$private(),$def(self,"$compile_child",(function(child){var $ret_or_1,value=nil;return $eqeqeq("str",$ret_or_1=child.$type())?(value=child.$loc().$expression().$source(),$truthy(value["$include?"]("self"))&&this.$scope().$self(),this.$push($$("Fragment").$new(value,this.$scope(),child))):$eqeqeq("begin",$ret_or_1)||$eqeqeq("gvar",$ret_or_1)||$eqeqeq("ivar",$ret_or_1)||$eqeqeq("nil",$ret_or_1)?this.$push(this.$expr(child)):this.$raise("Unsupported xstr part: "+child.$type())}),1),$def(self,"$compile_single_line",(function(children){var single_child,has_embeded_return=nil,first_child=nil,$ret_or_1=nil,last_child=nil,last_value=nil;return has_embeded_return=!1,first_child=children.$shift(),single_child=children["$empty?"](),first_child=$truthy($ret_or_1=first_child)?$ret_or_1:this.$s("nil"),$eqeq(first_child.$type(),"str")&&(has_embeded_return=first_child.$loc().$expression().$source().$strip()["$=~"](/^return\b/)),$truthy(this.returning)&&$not(has_embeded_return)&&this.$push("return "),last_child=$truthy($ret_or_1=children.$pop())?$ret_or_1:first_child,$eqeq(last_child.$type(),"str")&&(last_value=this.$extract_last_value(last_child)),$truthy(single_child)||(this.should_add_semicolon=!1,this.$compile_child(first_child),$send(children,"each",[],(function $$5(c){return null==c&&(c=nil),(null==$$5.$$s?this:$$5.$$s).$compile_child(c)}),{$$arity:1,$$s:this})),$eqeq(last_child.$type(),"str")?this.$push($$("Fragment").$new(last_value,this.$scope(),last_child)):this.$compile_child(last_child)}),1),$def(self,"$extract_last_value",(function(last_child){var last_value=nil;return last_value=last_child.$loc().$expression().$source().$rstrip(),$truthy(last_value["$include?"]("self"))&&this.$scope().$self(),($truthy(this.returning)||$truthy(this["$expr?"]()))&&$truthy(last_value["$end_with?"](";"))&&(this.$compiler().$warning("Removed semicolon ending x-string expression, interpreted as unintentional",last_child.$line()),last_value=last_value["$[]"]($range(0,-2,!1))),$truthy(this.returning)&&(this.should_add_semicolon=!0),last_value}),1),$def(self,"$unpack_return",(function(children){var first_child=nil;return first_child=children.$first(),this.returning=!1,$eqeq(first_child.$type(),"js_return")&&(this.returning=!0,children=first_child.$children()),children}),1)}($nesting[0],$$("Base"),$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes/lambda"]=function(Opal){var self=Opal.top,$nesting=[],$module=(Opal.nil,Opal.module),$klass=Opal.klass,$send=Opal.send,$def=Opal.def;return Opal.add_stubs("require,handle,children,helper,defines_lambda,scope,push,expr,iter"),self.$require("opal/nodes/call"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var $nesting=[$module($base,"Nodes")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super){var self=$klass($base,$super,"LambdaNode");return self.$handle("lambda"),self.$children("iter"),$def(self,"$compile",(function(){return this.$helper("lambda"),$send(this.$scope(),"defines_lambda",[],(function $$1(){var self=null==$$1.$$s?this:$$1.$$s;return self.$push("$lambda(",self.$expr(self.$iter()),")")}),{$$arity:0,$$s:this})}),0)}($nesting[0],$$("Base"))}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal/nodes"]=function(Opal){var self=Opal.top;Opal.nil;return Opal.add_stubs("require"),self.$require("opal/nodes/base"),self.$require("opal/nodes/literal"),self.$require("opal/nodes/variables"),self.$require("opal/nodes/constants"),self.$require("opal/nodes/call"),self.$require("opal/nodes/csend"),self.$require("opal/nodes/call_special"),self.$require("opal/nodes/module"),self.$require("opal/nodes/class"),self.$require("opal/nodes/singleton_class"),self.$require("opal/nodes/args"),self.$require("opal/nodes/args/arity_check"),self.$require("opal/nodes/iter"),self.$require("opal/nodes/def"),self.$require("opal/nodes/defs"),self.$require("opal/nodes/if"),self.$require("opal/nodes/logic"),self.$require("opal/nodes/definitions"),self.$require("opal/nodes/yield"),self.$require("opal/nodes/rescue"),self.$require("opal/nodes/super"),self.$require("opal/nodes/top"),self.$require("opal/nodes/while"),self.$require("opal/nodes/hash"),self.$require("opal/nodes/array"),self.$require("opal/nodes/defined"),self.$require("opal/nodes/masgn"),self.$require("opal/nodes/arglist"),self.$require("opal/nodes/x_string"),self.$require("opal/nodes/lambda")},Opal.modules["opal/eof_content"]=function(Opal){var 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$$indent.$$p,indent=this.indent,this.indent=$rb_plus(this.indent,$$("INDENT")),this.space="\n"+this.indent,res=Opal.yieldX($yield,[]),this.indent=indent,this.space="\n"+this.indent,res}),0),$def(self,"$with_temp",(function $$with_temp(){var tmp,res,$yield=$$with_temp.$$p||nil;return delete $$with_temp.$$p,tmp=this.scope.$new_temp(),res=Opal.yield1($yield,tmp),this.scope.$queue_temp(tmp),res}),0),$def(self,"$in_while",(function $$in_while(){var result,$yield=$$in_while.$$p||nil;return delete $$in_while.$$p,$yield===nil?nil:(this.while_loop=this.scope.$push_while(),result=Opal.yieldX($yield,[]),this.scope.$pop_while(),result)}),0),$def(self,"$in_case",(function $$in_case(){var old,$yield=$$in_case.$$p||nil;return delete $$in_case.$$p,$yield===nil?nil:(old=this.case_stmt,this.case_stmt=$hash2([],{}),Opal.yieldX($yield,[]),this.case_stmt=old)}),0),$def(self,"$in_while?",(function(){return this.scope["$in_while?"]()}),0),$def(self,"$process",(function(sexp,level){var handler=nil;return null==level&&(level="expr"),$truthy(sexp["$nil?"]())?this.$fragment("",this.$scope()):$truthy(handler=this.$handlers()["$[]"](sexp.$type()))?handler.$new(sexp,level,this).$compile_to_fragments():this.$error("Unsupported sexp: "+sexp.$type())}),-2),$def(self,"$handlers",(function(){var $ret_or_1;return this.handlers=$truthy($ret_or_1=this.handlers)?$ret_or_1:$$$($$$($$("Opal"),"Nodes"),"Base").$handlers()}),0),$def(self,"$requires",(function(){var $ret_or_1;return this.requires=$truthy($ret_or_1=this.requires)?$ret_or_1:[]}),0),$def(self,"$required_trees",(function(){var $ret_or_1;return this.required_trees=$truthy($ret_or_1=this.required_trees)?$ret_or_1:[]}),0),$def(self,"$autoloads",(function(){var $ret_or_1;return this.autoloads=$truthy($ret_or_1=this.autoloads)?$ret_or_1:[]}),0),$def(self,"$returns",(function(sexp){var $a,$b,$ret_or_1,when_sexp=nil,then_sexp=nil,body_sexp=nil,resbodies=nil,else_sexp=nil,klass=nil,lvar=nil,body=nil,rescue_sexp=nil,ensure_body=nil,rest=nil,last=nil,cond=nil,true_body=nil,false_body=nil;return $truthy(sexp)?$eqeqeq("undef",$ret_or_1=sexp.$type())?this.$returns(sexp.$updated("begin",[sexp,this.$s("nil")])):$eqeqeq("break",$ret_or_1)||$eqeqeq("next",$ret_or_1)||$eqeqeq("redo",$ret_or_1)||$eqeqeq("retry",$ret_or_1)?sexp:$eqeqeq("yield",$ret_or_1)?sexp.$updated("returnable_yield",nil):$eqeqeq("when",$ret_or_1)?($b=($b=($a=[].concat($to_a(sexp))).length-1)<0?0:$b,when_sexp=$slice.call($a,0,$b),then_sexp=null==$a[$b]?nil:$a[$b],sexp.$updated(nil,[].concat($to_a(when_sexp)).concat([this.$returns(then_sexp)]))):$eqeqeq("rescue",$ret_or_1)?(body_sexp=null==($a=[].concat($to_a(sexp)))[0]?nil:$a[0],$b=($b=$a.length-1)<1?1:$b,resbodies=$slice.call($a,1,$b),else_sexp=null==$a[$b]?nil:$a[$b],resbodies=$send(resbodies,"map",[],(function $$9(resbody){return null==resbody&&(resbody=nil),(null==$$9.$$s?this:$$9.$$s).$returns(resbody)}),{$$arity:1,$$s:this}),$truthy(else_sexp)&&(else_sexp=this.$returns(else_sexp)),sexp.$updated(nil,[this.$returns(body_sexp)].concat($to_a(resbodies)).concat([else_sexp]))):$eqeqeq("resbody",$ret_or_1)?(klass=null==($a=[].concat($to_a(sexp)))[0]?nil:$a[0],lvar=null==$a[1]?nil:$a[1],body=null==$a[2]?nil:$a[2],sexp.$updated(nil,[klass,lvar,this.$returns(body)])):$eqeqeq("ensure",$ret_or_1)?(rescue_sexp=null==($a=[].concat($to_a(sexp)))[0]?nil:$a[0],ensure_body=null==$a[1]?nil:$a[1],(sexp=sexp.$updated(nil,[this.$returns(rescue_sexp),ensure_body])).$updated("js_return",[sexp])):$eqeqeq("begin",$ret_or_1)||$eqeqeq("kwbegin",$ret_or_1)?($b=($b=($a=[].concat($to_a(sexp))).length-1)<0?0:$b,rest=$slice.call($a,0,$b),last=null==$a[$b]?nil:$a[$b],sexp.$updated(nil,[].concat($to_a(rest)).concat([this.$returns(last)]))):$eqeqeq("while",$ret_or_1)||$eqeqeq("until",$ret_or_1)||$eqeqeq("while_post",$ret_or_1)||$eqeqeq("until_post",$ret_or_1)||$eqeqeq("return",$ret_or_1)||$eqeqeq("js_return",$ret_or_1)||$eqeqeq("returnable_yield",$ret_or_1)?sexp:$eqeqeq("xstr",$ret_or_1)?sexp.$updated(nil,[$send(this,"s",["js_return"].concat($to_a(sexp.$children())))]):$eqeqeq("if",$ret_or_1)?(cond=null==($a=[].concat($to_a(sexp)))[0]?nil:$a[0],true_body=null==$a[1]?nil:$a[1],false_body=null==$a[2]?nil:$a[2],sexp.$updated(nil,[cond,this.$returns(true_body),this.$returns(false_body)])):$eqeq(sexp.$type(),"send")&&$eqeq(sexp.$children()["$[]"](1),"debugger")?sexp.$updated("begin",[sexp,this.$s("js_return",this.$s("nil"))]):sexp.$updated("js_return",[sexp]):this.$returns(this.$s("nil"))}),1),$def(self,"$handle_block_given_call",(function(sexp){var scope=nil;return this.scope["$uses_block!"](),$truthy(this.scope.$block_name())?this.$fragment("("+this.scope.$block_name()+" !== nil)",this.$scope(),sexp):$truthy(scope=this.scope.$find_parent_def())&&$truthy(scope.$block_name())?this.$fragment("("+scope.$block_name()+" !== nil)",scope,sexp):this.$fragment("false",scope,sexp)}),1),$def(self,"$marshal_dump",(function(){var $ret_or_1;return[this.options,this.option_values,this.source_map=$truthy($ret_or_1=this.source_map)?$ret_or_1:this.$source_map().$cache(),this.magic_comments,this.result,this.required_trees,this.requires,this.autoloads]}),0),$def(self,"$marshal_load",(function(src){var $a,$b;return $a=$to_ary($b=src),this.options=null==$a[0]?nil:$a[0],this.option_values=null==$a[1]?nil:$a[1],this.source_map=null==$a[2]?nil:$a[2],this.magic_comments=null==$a[3]?nil:$a[3],this.result=null==$a[4]?nil:$a[4],this.required_trees=null==$a[5]?nil:$a[5],this.requires=null==$a[6]?nil:$a[6],this.autoloads=null==$a[7]?nil:$a[7],$b}),1)}($nesting[0],0,$nesting)}($nesting[0],$nesting)},Opal.modules["opal/erb"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$module=Opal.module,$defs=Opal.defs,$klass=Opal.klass,$const_set=Opal.const_set,$def=Opal.def,$truthy=Opal.truthy,$rb_plus=Opal.rb_plus,$send=Opal.send,$regexp=Opal.regexp;return Opal.add_stubs("require,compile,new,freeze,fix_quotes,find_contents,find_code,wrap_compiled,require_erb,prepared_source,gsub,+,last_match,=~,sub"),self.$require("opal/compiler"),function($base,$parent_nesting){var $nesting=[$module($base,"Opal")].concat($parent_nesting);return function($base,$parent_nesting){var self=$module($base,"ERB"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return $defs(self,"$compile",(function(source,file_name){return null==file_name&&(file_name="(erb)"),$$("Compiler").$new(source,file_name).$compile()}),-2),function($base,$super,$parent_nesting){var self=$klass($base,null,"Compiler"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;return $proto.prepared_source=$proto.source=$proto.file_name=nil,$const_set($nesting[0],"BLOCK_EXPR",/\s+(do|\{)(\s*\|[^|]*\|)?\s*\Z/.$freeze()),$def(self,"$initialize",(function(source,file_name){var $a;return null==file_name&&(file_name="(erb)"),$a=[source,file_name,source],this.source=$a[0],this.file_name=$a[1],this.result=$a[2],$a}),-2),$def(self,"$prepared_source",(function(){var $ret_or_1,source=nil;return this.prepared_source=$truthy($ret_or_1=this.prepared_source)?$ret_or_1:(source=this.source,source=this.$fix_quotes(source),source=this.$find_contents(source),source=this.$find_code(source),source=this.$wrap_compiled(source),source=this.$require_erb(source))}),0),$def(self,"$compile",(function(){return $$("Opal").$compile(this.$prepared_source())}),0),$def(self,"$fix_quotes",(function(result){return result.$gsub('"','\\"')}),1),$def(self,"$require_erb",(function(result){return $rb_plus('require "erb";',result)}),1),$def(self,"$find_contents",(function(result){return $send(result,"gsub",[/<%=([\s\S]+?)%>/],(function(){var inner=nil;return inner=$$("Regexp").$last_match(1).$gsub(/\\'/,"'").$gsub(/\\"/,'"'),$truthy(inner["$=~"]($$("BLOCK_EXPR")))?'")\noutput_buffer.append= '+inner+'\noutput_buffer.append("':'")\noutput_buffer.append=('+inner+')\noutput_buffer.append("'}),0)}),1),$def(self,"$find_code",(function(result){return $send(result,"gsub",[/<%([\s\S]+?)%>/],(function(){return'")\n'+$$("Regexp").$last_match(1).$gsub(/\\"/,'"')+'\noutput_buffer.append("'}),0)}),1),$def(self,"$wrap_compiled",(function(result){return"Template.new('"+this.file_name.$sub($regexp(["\\.opalerb",$$("REGEXP_END")]),"")+"') do |output_buffer|\noutput_buffer.append(\""+result+'")\noutput_buffer.join\nend\n'}),1)}($nesting[0],0,$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting)},Opal.modules["opal-parser"]=function(Opal){var self=Opal.top,$nesting=[],$$=Opal.$r($nesting),nil=Opal.nil,$module=Opal.module,$Opal=Opal.Opal,$hash2=Opal.hash2,$truthy=Opal.truthy,$def=Opal.def;function run_ruby_scripts(){for(var tag,tags=document.getElementsByTagName("script"),i=0,len=tags.length;i<len;i++)"text/ruby"===(tag=tags[i]).type&&(tag.src&&Opal.Kernel.$require_remote(tag.src),tag.innerHTML&&Opal.Kernel.$eval(tag.innerHTML))}Opal.add_stubs("require,coerce_to!,merge,js_eval"),self.$require("corelib/string/unpack"),self.$require("opal/compiler"),self.$require("opal/erb"),self.$require("opal/version"),function($base,$parent_nesting){var self=$module($base,"Kernel"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);$def(self,"$eval",(function $Kernel_eval$1(str,binding,file,line){var self=this,default_eval_options=nil,$ret_or_1=nil,compiling_options=nil,code=nil;return null==binding&&(binding=nil),null==file&&(file=nil),null==line&&(line=nil),str=$Opal["$coerce_to!"](str,$$("String"),"to_str"),default_eval_options=$hash2(["file","eval"],{file:$truthy($ret_or_1=file)?$ret_or_1:"(eval)",eval:!0}),compiling_options=Opal.hash({arity_check:!1}).$merge(default_eval_options),code=Opal.compile(str,compiling_options),$truthy(binding)?binding.$js_eval(code):function(self){return eval(code)}(self)}),-2),$def(self,"$require_remote",(function $$require_remote(url){var $a,self=this,r=new XMLHttpRequest;return r.open("GET",url,!1),r.send(""),$a=r.responseText,"function"==typeof Opal.compile?eval(Opal.compile($a,{scope_variables:["url"],arity_check:!1,file:"(eval)",eval:!0})):self.$eval($a)}),1)}($nesting[0],$nesting),Opal.compile=function(str,options){try{return str=$Opal["$coerce_to!"](str,$$("String"),"to_str"),options&&(options=Opal.hash(options)),Opal.Opal.$compile(str,options)}catch(e){if(e.$$class===Opal.Opal.SyntaxError){var err=Opal.SyntaxError.$new(e.message);throw err.$set_backtrace(e.$backtrace()),err}throw e}},Opal.eval=function(str,options){return eval(Opal.compile(str,options))},"undefined"!=typeof document&&(window.addEventListener?window.addEventListener("DOMContentLoaded",run_ruby_scripts,!1):window.attachEvent("onload",run_ruby_scripts))};
diff --git a/opal/master/opal-parser.min.js.gz b/opal/master/opal-parser.min.js.gz
index 67f3cc15..cf832d3f 100644
Binary files a/opal/master/opal-parser.min.js.gz and b/opal/master/opal-parser.min.js.gz differ
diff --git a/opal/master/opal-platform.js b/opal/master/opal-platform.js
index e0345769..b3228fd0 100644
--- a/opal/master/opal-platform.js
+++ b/opal/master/opal-platform.js
@@ -1,6 +1,5 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal-platform"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $truthy = Opal.truthy, browser = nil, node = nil, nashorn = nil, headless_chrome = nil, gjs = nil;
+Opal.modules["opal-platform"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $const_set = Opal.const_set, $truthy = Opal.truthy, browser = nil, node = nil, nashorn = nil, headless_chrome = nil, gjs = nil, quickjs = nil, opal_miniracer = nil;
 
   
   /* global Java, GjsFileImporter */;
@@ -9,15 +8,7 @@ Opal.modules["opal-platform"] = function(Opal) {
   nashorn = typeof(Java) !== "undefined" && Java.type;
   headless_chrome = typeof(navigator) !== "undefined" && /\bHeadlessChrome\//.test(navigator.userAgent);
   gjs = typeof(window) !== "undefined" && typeof(GjsFileImporter) !== 'undefined';
-  return Opal.const_set($nesting[0], 'OPAL_PLATFORM', (function() {if ($truthy(nashorn)) {
-    return "nashorn"
-  } else if ($truthy(node)) {
-    return "nodejs"
-  } else if ($truthy(headless_chrome)) {
-    return "headless-chrome"
-  } else if ($truthy(gjs)) {
-    return "gjs"
-  } else {
-    return nil
-  }; return nil; })());
+  quickjs = typeof(window) === "undefined" && typeof(__loadScript) !== 'undefined';
+  opal_miniracer = typeof(opalminiracer) !== 'undefined';
+  return $const_set($nesting[0], 'OPAL_PLATFORM', ($truthy(nashorn) ? ("nashorn") : ($truthy(node) ? ("nodejs") : ($truthy(headless_chrome) ? ("headless-chrome") : ($truthy(gjs) ? ("gjs") : ($truthy(quickjs) ? ("quickjs") : ($truthy(opal_miniracer) ? ("opal-miniracer") : nil)))))));
 };
diff --git a/opal/master/opal-platform.min.js b/opal/master/opal-platform.min.js
index c32ae178..aed880c1 100644
--- a/opal/master/opal-platform.min.js
+++ b/opal/master/opal-platform.min.js
@@ -1 +1 @@
-Opal.modules["opal-platform"]=function(Opal){Opal.top;var nil=Opal.nil,$truthy=(Opal.$$$,Opal.$$,Opal.truthy),node="undefined"!=typeof process&&process.versions&&process.versions.node,nashorn="undefined"!=typeof Java&&Java.type,headless_chrome="undefined"!=typeof navigator&&/\bHeadlessChrome\//.test(navigator.userAgent),gjs="undefined"!=typeof window&&"undefined"!=typeof GjsFileImporter;return Opal.const_set([][0],"OPAL_PLATFORM",$truthy(nashorn)?"nashorn":$truthy(node)?"nodejs":$truthy(headless_chrome)?"headless-chrome":$truthy(gjs)?"gjs":nil)};
+Opal.modules["opal-platform"]=function(Opal){var node,nashorn,headless_chrome,gjs,quickjs,opal_miniracer,nil=Opal.nil,$const_set=Opal.const_set,$truthy=Opal.truthy;return"undefined"!=typeof document,node="undefined"!=typeof process&&process.versions&&process.versions.node,nashorn="undefined"!=typeof Java&&Java.type,headless_chrome="undefined"!=typeof navigator&&/\bHeadlessChrome\//.test(navigator.userAgent),gjs="undefined"!=typeof window&&"undefined"!=typeof GjsFileImporter,quickjs="undefined"==typeof window&&"undefined"!=typeof __loadScript,opal_miniracer="undefined"!=typeof opalminiracer,$const_set([][0],"OPAL_PLATFORM",$truthy(nashorn)?"nashorn":$truthy(node)?"nodejs":$truthy(headless_chrome)?"headless-chrome":$truthy(gjs)?"gjs":$truthy(quickjs)?"quickjs":$truthy(opal_miniracer)?"opal-miniracer":nil)};
diff --git a/opal/master/opal-platform.min.js.gz b/opal/master/opal-platform.min.js.gz
index ba384407..ecf2ecb8 100644
Binary files a/opal/master/opal-platform.min.js.gz and b/opal/master/opal-platform.min.js.gz differ
diff --git a/opal/master/opal-replutils.js b/opal/master/opal-replutils.js
new file mode 100644
index 00000000..34ce5f98
--- /dev/null
+++ b/opal/master/opal-replutils.js
@@ -0,0 +1,1838 @@
+Opal.modules["thread"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $truthy = Opal.truthy, $defs = Opal.defs, $def = Opal.def, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $hash2 = Opal.hash2, $Opal = Opal.Opal, $alias = Opal.alias, $const_set = Opal.const_set;
+
+  Opal.add_stubs('allocate,core_initialize!,current,raise,[],coerce_key_name,[]=,-,key?,keys,private,coerce_to!,clear,empty?,size,shift,push,each,to_proc,=~,last_match,to_i,inspect,attr_reader,locked?,lock,unlock');
+  
+  $klass($nesting[0], $$('StandardError'), 'ThreadError');
+  (function($base, $super, $parent_nesting) {
+    var self = $klass($base, $super, 'Thread');
+
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
+
+    $proto.fiber_locals = $proto.thread_locals = nil;
+    
+    $defs(self, '$current', function $$current() {
+      var self = this;
+      if (self.current == null) self.current = nil;
+
+      
+      if (!$truthy(self.current)) {
+        
+        self.current = self.$allocate();
+        self.current['$core_initialize!']();
+      };
+      return self.current;
+    }, 0);
+    $defs(self, '$list', function $$list() {
+      var self = this;
+
+      return [self.$current()]
+    }, 0);
+    
+    $def(self, '$initialize', function $$initialize($a) {
+      var $post_args, args, self = this;
+
+      
+      
+      $post_args = Opal.slice.call(arguments);
+      
+      args = $post_args;;
+      return self.$raise($$('NotImplementedError'), "Thread creation not available");
+    }, -1);
+    
+    $def(self, '$[]', function $Thread_$$$1(key) {
+      var self = this;
+
+      return self.fiber_locals['$[]'](self.$coerce_key_name(key))
+    }, 1);
+    
+    $def(self, '$[]=', function $Thread_$$$eq$2(key, value) {
+      var self = this, $writer = nil;
+
+      
+      $writer = [self.$coerce_key_name(key), value];
+      $send(self.fiber_locals, '[]=', $to_a($writer));
+      return $writer[$rb_minus($writer["length"], 1)];
+    }, 2);
+    
+    $def(self, '$key?', function $Thread_key$ques$3(key) {
+      var self = this;
+
+      return self.fiber_locals['$key?'](self.$coerce_key_name(key))
+    }, 1);
+    
+    $def(self, '$keys', function $$keys() {
+      var self = this;
+
+      return self.fiber_locals.$keys()
+    }, 0);
+    
+    $def(self, '$thread_variable_get', function $$thread_variable_get(key) {
+      var self = this;
+
+      return self.thread_locals['$[]'](self.$coerce_key_name(key))
+    }, 1);
+    
+    $def(self, '$thread_variable_set', function $$thread_variable_set(key, value) {
+      var self = this, $writer = nil;
+
+      
+      $writer = [self.$coerce_key_name(key), value];
+      $send(self.thread_locals, '[]=', $to_a($writer));
+      return $writer[$rb_minus($writer["length"], 1)];
+    }, 2);
+    
+    $def(self, '$thread_variable?', function $Thread_thread_variable$ques$4(key) {
+      var self = this;
+
+      return self.thread_locals['$key?'](self.$coerce_key_name(key))
+    }, 1);
+    
+    $def(self, '$thread_variables', function $$thread_variables() {
+      var self = this;
+
+      return self.thread_locals.$keys()
+    }, 0);
+    self.$private();
+    
+    $def(self, '$core_initialize!', function $Thread_core_initialize$excl$5() {
+      var self = this;
+
+      
+      self.thread_locals = $hash2([], {});
+      return (self.fiber_locals = $hash2([], {}));
+    }, 0);
+    
+    $def(self, '$coerce_key_name', function $$coerce_key_name(key) {
+      
+      return $Opal['$coerce_to!'](key, $$('String'), "to_s")
+    }, 1);
+    (function($base, $super, $parent_nesting) {
+      var self = $klass($base, $super, 'Queue');
+
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
+
+      $proto.storage = nil;
+      
+      
+      $def(self, '$initialize', function $$initialize() {
+        var self = this;
+
+        return self.$clear()
+      }, 0);
+      
+      $def(self, '$clear', function $$clear() {
+        var self = this;
+
+        return (self.storage = [])
+      }, 0);
+      
+      $def(self, '$empty?', function $Queue_empty$ques$6() {
+        var self = this;
+
+        return self.storage['$empty?']()
+      }, 0);
+      
+      $def(self, '$size', function $$size() {
+        var self = this;
+
+        return self.storage.$size()
+      }, 0);
+      
+      $def(self, '$pop', function $$pop(non_block) {
+        var self = this;
+
+        
+        
+        if (non_block == null) non_block = false;;
+        if ($truthy(self['$empty?']())) {
+          
+          if ($truthy(non_block)) {
+            self.$raise($$('ThreadError'), "Queue empty")
+          };
+          self.$raise($$('ThreadError'), "Deadlock");
+        };
+        return self.storage.$shift();
+      }, -1);
+      
+      $def(self, '$push', function $$push(value) {
+        var self = this;
+
+        return self.storage.$push(value)
+      }, 1);
+      
+      $def(self, '$each', function $$each() {
+        var block = $$each.$$p || nil, self = this;
+
+        delete $$each.$$p;
+        
+        ;
+        return $send(self.storage, 'each', [], block.$to_proc());
+      }, 0);
+      $alias(self, "<<", "push");
+      $alias(self, "deq", "pop");
+      $alias(self, "enq", "push");
+      $alias(self, "length", "size");
+      return $alias(self, "shift", "pop");
+    })($nesting[0], null, $nesting);
+    return (function($base, $super, $parent_nesting) {
+      var self = $klass($base, $super, 'Backtrace');
+
+      var $nesting = [self].concat($parent_nesting);
+
+      return (function($base, $super, $parent_nesting) {
+        var self = $klass($base, $super, 'Location');
+
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
+
+        $proto.label = $proto.str = nil;
+        
+        
+        $def(self, '$initialize', function $$initialize(str) {
+          var self = this, $ret_or_1 = nil;
+
+          
+          self.str = str;
+          str['$=~'](/^(.*?):(\d+):(\d+):in `(.*?)'$/);
+          self.path = $$('Regexp').$last_match(1);
+          self.label = $$('Regexp').$last_match(4);
+          self.lineno = $$('Regexp').$last_match(2).$to_i();
+          self.label['$=~'](/(\w+)$/);
+          return (self.base_label = ($truthy(($ret_or_1 = $$('Regexp').$last_match(1))) ? ($ret_or_1) : (self.label)));
+        }, 1);
+        
+        $def(self, '$to_s', function $$to_s() {
+          var self = this;
+
+          return self.str
+        }, 0);
+        
+        $def(self, '$inspect', function $$inspect() {
+          var self = this;
+
+          return self.str.$inspect()
+        }, 0);
+        self.$attr_reader("base_label", "label", "lineno", "path");
+        return $alias(self, "absolute_path", "path");
+      })($nesting[0], null, $nesting)
+    })($nesting[0], null, $nesting);
+  })($nesting[0], null, $nesting);
+  $const_set($nesting[0], 'Queue', $$$($$('Thread'), 'Queue'));
+  return (function($base, $super, $parent_nesting) {
+    var self = $klass($base, $super, 'Mutex');
+
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
+
+    $proto.locked = nil;
+    
+    
+    $def(self, '$initialize', function $$initialize() {
+      var self = this;
+
+      return (self.locked = false)
+    }, 0);
+    
+    $def(self, '$lock', function $$lock() {
+      var self = this;
+
+      
+      if ($truthy(self.locked)) {
+        self.$raise($$('ThreadError'), "Deadlock")
+      };
+      self.locked = true;
+      return self;
+    }, 0);
+    
+    $def(self, '$locked?', function $Mutex_locked$ques$7() {
+      var self = this;
+
+      return self.locked
+    }, 0);
+    
+    $def(self, '$owned?', function $Mutex_owned$ques$8() {
+      var self = this;
+
+      return self.locked
+    }, 0);
+    
+    $def(self, '$try_lock', function $$try_lock() {
+      var self = this;
+
+      if ($truthy(self['$locked?']())) {
+        return false
+      } else {
+        
+        self.$lock();
+        return true;
+      }
+    }, 0);
+    
+    $def(self, '$unlock', function $$unlock() {
+      var self = this;
+
+      
+      if (!$truthy(self.locked)) {
+        self.$raise($$('ThreadError'), "Mutex not locked")
+      };
+      self.locked = false;
+      return self;
+    }, 0);
+    return $def(self, '$synchronize', function $$synchronize() {
+      var $yield = $$synchronize.$$p || nil, self = this;
+
+      delete $$synchronize.$$p;
+      
+      self.$lock();
+      
+      return (function() { try {
+      return Opal.yieldX($yield, []);
+      } finally {
+        self.$unlock()
+      }; })();;
+    }, 0);
+  })($nesting[0], null, $nesting);
+};
+
+Opal.modules["stringio"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $defs = Opal.defs, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def, $eqeqeq = Opal.eqeqeq, $truthy = Opal.truthy, $rb_ge = Opal.rb_ge, $rb_gt = Opal.rb_gt, $rb_plus = Opal.rb_plus, $rb_minus = Opal.rb_minus, $eqeq = Opal.eqeq, $alias = Opal.alias;
+
+  Opal.add_stubs('new,call,close,attr_accessor,check_readable,==,length,===,>=,raise,>,+,-,seek,check_writable,String,[],eof?,write,read');
+  return (function($base, $super, $parent_nesting) {
+    var self = $klass($base, $super, 'StringIO');
+
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
+
+    $proto.position = $proto.string = nil;
+    
+    $defs(self, '$open', function $$open(string, mode) {
+      var block = $$open.$$p || nil, self = this, io = nil, res = nil;
+
+      delete $$open.$$p;
+      
+      ;
+      
+      if (string == null) string = "";;
+      
+      if (mode == null) mode = nil;;
+      io = self.$new(string, mode);
+      res = block.$call(io);
+      io.$close();
+      return res;
+    }, -1);
+    self.$attr_accessor("string");
+    
+    $def(self, '$initialize', function $$initialize(string, mode) {
+      var $yield = $$initialize.$$p || nil, self = this;
+
+      delete $$initialize.$$p;
+      
+      
+      if (string == null) string = "";;
+      
+      if (mode == null) mode = "rw";;
+      self.string = string;
+      self.position = 0;
+      return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [nil, mode], null);
+    }, -1);
+    
+    $def(self, '$eof?', function $StringIO_eof$ques$1() {
+      var self = this;
+
+      
+      self.$check_readable();
+      return self.position['$=='](self.string.$length());
+    }, 0);
+    
+    $def(self, '$seek', function $$seek(pos, whence) {
+      var self = this, $ret_or_1 = nil;
+
+      
+      
+      if (whence == null) whence = $$$($$('IO'), 'SEEK_SET');;
+      self.read_buffer = "";
+      if ($eqeqeq($$$($$('IO'), 'SEEK_SET'), ($ret_or_1 = whence))) {
+        
+        if (!$truthy($rb_ge(pos, 0))) {
+          self.$raise($$$($$('Errno'), 'EINVAL'))
+        };
+        self.position = pos;
+      } else if ($eqeqeq($$$($$('IO'), 'SEEK_CUR'), $ret_or_1)) {
+        if ($truthy($rb_gt($rb_plus(self.position, pos), self.string.$length()))) {
+          self.position = self.string.$length()
+        } else {
+          self.position = $rb_plus(self.position, pos)
+        }
+      } else if ($eqeqeq($$$($$('IO'), 'SEEK_END'), $ret_or_1)) {
+        if ($truthy($rb_gt(pos, self.string.$length()))) {
+          self.position = 0
+        } else {
+          self.position = $rb_minus(self.position, pos)
+        }
+      } else {
+        nil
+      };
+      return 0;
+    }, -2);
+    
+    $def(self, '$tell', function $$tell() {
+      var self = this;
+
+      return self.position
+    }, 0);
+    
+    $def(self, '$rewind', function $$rewind() {
+      var self = this;
+
+      return self.$seek(0)
+    }, 0);
+    
+    $def(self, '$write', function $$write(string) {
+      var self = this, before = nil, after = nil;
+
+      
+      self.$check_writable();
+      self.read_buffer = "";
+      string = self.$String(string);
+      if ($eqeq(self.string.$length(), self.position)) {
+        
+        self.string = $rb_plus(self.string, string);
+        return (self.position = $rb_plus(self.position, string.$length()));
+      } else {
+        
+        before = self.string['$[]'](Opal.Range.$new(0, $rb_minus(self.position, 1), false));
+        after = self.string['$[]'](Opal.Range.$new($rb_plus(self.position, string.$length()), -1, false));
+        self.string = $rb_plus($rb_plus(before, string), after);
+        return (self.position = $rb_plus(self.position, string.$length()));
+      };
+    }, 1);
+    
+    $def(self, '$read', function $$read(length, outbuf) {
+      var self = this, string = nil, str = nil;
+
+      
+      
+      if (length == null) length = nil;;
+      
+      if (outbuf == null) outbuf = nil;;
+      self.$check_readable();
+      if ($truthy(self['$eof?']())) {
+        return nil
+      };
+      string = ($truthy(length) ? (((str = self.string['$[]'](self.position, length)), (self.position = $rb_plus(self.position, length)), ($truthy($rb_gt(self.position, self.string.$length())) ? ((self.position = self.string.$length())) : nil), str)) : (((str = self.string['$[]'](Opal.Range.$new(self.position, -1, false))), (self.position = self.string.$length()), str)));
+      if ($truthy(outbuf)) {
+        return outbuf.$write(string)
+      } else {
+        return string
+      };
+    }, -1);
+    
+    $def(self, '$sysread', function $$sysread(length) {
+      var self = this;
+
+      
+      self.$check_readable();
+      return self.$read(length);
+    }, 1);
+    $alias(self, "eof", "eof?");
+    $alias(self, "pos", "tell");
+    $alias(self, "pos=", "seek");
+    return $alias(self, "readpartial", "read");
+  })($nesting[0], $$('IO'), $nesting)
+};
+
+Opal.modules["prettyprint"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $klass = Opal.klass, $send = Opal.send, $rb_times = Opal.rb_times, $defs = Opal.defs, $truthy = Opal.truthy, $def = Opal.def, $rb_lt = Opal.rb_lt, $rb_plus = Opal.rb_plus, $rb_minus = Opal.rb_minus, $eqeqeq = Opal.eqeqeq, $to_a = Opal.to_a;
+
+  Opal.add_stubs('dup,lambda,*,new,to_proc,flush,attr_reader,last,<,+,deq,empty?,breakables,shift,output,-,width,!,===,first,length,<<,add,break_outmost_groups,group,breakable,break?,call,text,group_sub,nest,depth,push,enq,pop,delete,each,clear,indent,current_group,newline,genspace,group_queue,[],downto,slice!,break,[]=');
+  return (function($base, $super, $parent_nesting) {
+    var self = $klass($base, $super, 'PrettyPrint');
+
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
+
+    $proto.group_stack = $proto.maxwidth = $proto.output_width = $proto.buffer_width = $proto.group_queue = $proto.buffer = $proto.output = $proto.newline = $proto.genspace = $proto.indent = nil;
+    
+    $defs($$('PrettyPrint'), '$format', function $$format(output, maxwidth, newline, genspace) {
+      var $yield = $$format.$$p || nil, self = this, q = nil;
+
+      delete $$format.$$p;
+      
+      
+      if (output == null) output = "".$dup();;
+      
+      if (maxwidth == null) maxwidth = 79;;
+      
+      if (newline == null) newline = "\n";;
+      
+      if (genspace == null) genspace = $send(self, 'lambda', [], function $$1(n){
+        
+        
+        if (n == null) n = nil;;
+        return $rb_times(" ", n);}, 1);;
+      q = $send($$('PrettyPrint'), 'new', [output, maxwidth, newline], genspace.$to_proc());
+      Opal.yield1($yield, q);
+      q.$flush();
+      return output;
+    }, -1);
+    $defs($$('PrettyPrint'), '$singleline_format', function $$singleline_format(output, maxwidth, newline, genspace) {
+      var $yield = $$singleline_format.$$p || nil, q = nil;
+
+      delete $$singleline_format.$$p;
+      
+      
+      if (output == null) output = "".$dup();;
+      
+      if (maxwidth == null) maxwidth = nil;;
+      
+      if (newline == null) newline = nil;;
+      
+      if (genspace == null) genspace = nil;;
+      q = $$('SingleLine').$new(output);
+      Opal.yield1($yield, q);
+      return output;
+    }, -1);
+    
+    $def(self, '$initialize', function $$initialize(output, maxwidth, newline) {
+      var genspace = $$initialize.$$p || nil, self = this, $ret_or_1 = nil, root_group = nil;
+
+      delete $$initialize.$$p;
+      
+      ;
+      
+      if (output == null) output = "".$dup();;
+      
+      if (maxwidth == null) maxwidth = 79;;
+      
+      if (newline == null) newline = "\n";;
+      self.output = output;
+      self.maxwidth = maxwidth;
+      self.newline = newline;
+      self.genspace = ($truthy(($ret_or_1 = genspace)) ? ($ret_or_1) : ($send(self, 'lambda', [], function $$2(n){
+        
+        
+        if (n == null) n = nil;;
+        return $rb_times(" ", n);}, 1)));
+      self.output_width = 0;
+      self.buffer_width = 0;
+      self.buffer = [];
+      root_group = $$('Group').$new(0);
+      self.group_stack = [root_group];
+      self.group_queue = $$('GroupQueue').$new(root_group);
+      return (self.indent = 0);
+    }, -1);
+    self.$attr_reader("output");
+    self.$attr_reader("maxwidth");
+    self.$attr_reader("newline");
+    self.$attr_reader("genspace");
+    self.$attr_reader("indent");
+    self.$attr_reader("group_queue");
+    
+    $def(self, '$current_group', function $$current_group() {
+      var self = this;
+
+      return self.group_stack.$last()
+    }, 0);
+    
+    $def(self, '$break_outmost_groups', function $$break_outmost_groups() {
+      var $a, $b, self = this, group = nil, data = nil, $ret_or_1 = nil, text = nil;
+
+      while ($truthy($rb_lt(self.maxwidth, $rb_plus(self.output_width, self.buffer_width)))) {
+        
+        if (!$truthy((group = self.group_queue.$deq()))) {
+          return nil
+        };
+        while (!($truthy(group.$breakables()['$empty?']()))) {
+          
+          data = self.buffer.$shift();
+          self.output_width = data.$output(self.output, self.output_width);
+          self.buffer_width = $rb_minus(self.buffer_width, data.$width());
+        };
+        while ($truthy(($truthy(($ret_or_1 = self.buffer['$empty?']()['$!']())) ? ($$('Text')['$==='](self.buffer.$first())) : ($ret_or_1)))) {
+          
+          text = self.buffer.$shift();
+          self.output_width = text.$output(self.output, self.output_width);
+          self.buffer_width = $rb_minus(self.buffer_width, text.$width());
+        };
+      }
+    }, 0);
+    
+    $def(self, '$text', function $$text(obj, width) {
+      var self = this, text = nil;
+
+      
+      
+      if (width == null) width = obj.$length();;
+      if ($truthy(self.buffer['$empty?']())) {
+        
+        self.output['$<<'](obj);
+        return (self.output_width = $rb_plus(self.output_width, width));
+      } else {
+        
+        text = self.buffer.$last();
+        if (!$eqeqeq($$('Text'), text)) {
+          
+          text = $$('Text').$new();
+          self.buffer['$<<'](text);
+        };
+        text.$add(obj, width);
+        self.buffer_width = $rb_plus(self.buffer_width, width);
+        return self.$break_outmost_groups();
+      };
+    }, -2);
+    
+    $def(self, '$fill_breakable', function $$fill_breakable(sep, width) {
+      var self = this;
+
+      
+      
+      if (sep == null) sep = " ";;
+      
+      if (width == null) width = sep.$length();;
+      return $send(self, 'group', [], function $$3(){var self = $$3.$$s == null ? this : $$3.$$s;
+
+        return self.$breakable(sep, width)}, {$$arity: 0, $$s: self});
+    }, -1);
+    
+    $def(self, '$breakable', function $$breakable(sep, width) {
+      var self = this, group = nil;
+
+      
+      
+      if (sep == null) sep = " ";;
+      
+      if (width == null) width = sep.$length();;
+      group = self.group_stack.$last();
+      if ($truthy(group['$break?']())) {
+        
+        self.$flush();
+        self.output['$<<'](self.newline);
+        self.output['$<<'](self.genspace.$call(self.indent));
+        self.output_width = self.indent;
+        return (self.buffer_width = 0);
+      } else {
+        
+        self.buffer['$<<']($$('Breakable').$new(sep, width, self));
+        self.buffer_width = $rb_plus(self.buffer_width, width);
+        return self.$break_outmost_groups();
+      };
+    }, -1);
+    
+    $def(self, '$group', function $$group(indent, open_obj, close_obj, open_width, close_width) {
+      var $yield = $$group.$$p || nil, self = this;
+
+      delete $$group.$$p;
+      
+      
+      if (indent == null) indent = 0;;
+      
+      if (open_obj == null) open_obj = "";;
+      
+      if (close_obj == null) close_obj = "";;
+      
+      if (open_width == null) open_width = open_obj.$length();;
+      
+      if (close_width == null) close_width = close_obj.$length();;
+      self.$text(open_obj, open_width);
+      $send(self, 'group_sub', [], function $$4(){var self = $$4.$$s == null ? this : $$4.$$s;
+
+        return $send(self, 'nest', [indent], function $$5(){
+          return Opal.yieldX($yield, []);}, 0)}, {$$arity: 0, $$s: self});
+      return self.$text(close_obj, close_width);
+    }, -1);
+    
+    $def(self, '$group_sub', function $$group_sub() {
+      var $yield = $$group_sub.$$p || nil, self = this, group = nil;
+
+      delete $$group_sub.$$p;
+      
+      group = $$('Group').$new($rb_plus(self.group_stack.$last().$depth(), 1));
+      self.group_stack.$push(group);
+      self.group_queue.$enq(group);
+      
+      return (function() { try {
+      return Opal.yieldX($yield, []);
+      } finally {
+        (self.group_stack.$pop(), ($truthy(group.$breakables()['$empty?']()) ? (self.group_queue.$delete(group)) : nil))
+      }; })();;
+    }, 0);
+    
+    $def(self, '$nest', function $$nest(indent) {
+      var $yield = $$nest.$$p || nil, self = this;
+
+      delete $$nest.$$p;
+      
+      self.indent = $rb_plus(self.indent, indent);
+      
+      return (function() { try {
+      return Opal.yieldX($yield, []);
+      } finally {
+        (self.indent = $rb_minus(self.indent, indent))
+      }; })();;
+    }, 1);
+    
+    $def(self, '$flush', function $$flush() {
+      var self = this;
+
+      
+      $send(self.buffer, 'each', [], function $$6(data){var self = $$6.$$s == null ? this : $$6.$$s;
+        if (self.output == null) self.output = nil;
+        if (self.output_width == null) self.output_width = nil;
+
+        
+        
+        if (data == null) data = nil;;
+        return (self.output_width = data.$output(self.output, self.output_width));}, {$$arity: 1, $$s: self});
+      self.buffer.$clear();
+      return (self.buffer_width = 0);
+    }, 0);
+    (function($base, $super) {
+      var self = $klass($base, $super, 'Text');
+
+      var $proto = self.$$prototype;
+
+      $proto.objs = $proto.width = nil;
+      
+      
+      $def(self, '$initialize', function $$initialize() {
+        var self = this;
+
+        
+        self.objs = [];
+        return (self.width = 0);
+      }, 0);
+      self.$attr_reader("width");
+      
+      $def(self, '$output', function $$output(out, output_width) {
+        var self = this;
+
+        
+        $send(self.objs, 'each', [], function $$7(obj){
+          
+          
+          if (obj == null) obj = nil;;
+          return out['$<<'](obj);}, 1);
+        return $rb_plus(output_width, self.width);
+      }, 2);
+      return $def(self, '$add', function $$add(obj, width) {
+        var self = this;
+
+        
+        self.objs['$<<'](obj);
+        return (self.width = $rb_plus(self.width, width));
+      }, 2);
+    })($nesting[0], null);
+    (function($base, $super) {
+      var self = $klass($base, $super, 'Breakable');
+
+      var $proto = self.$$prototype;
+
+      $proto.group = $proto.pp = $proto.indent = $proto.obj = $proto.width = nil;
+      
+      
+      $def(self, '$initialize', function $$initialize(sep, width, q) {
+        var self = this;
+
+        
+        self.obj = sep;
+        self.width = width;
+        self.pp = q;
+        self.indent = q.$indent();
+        self.group = q.$current_group();
+        return self.group.$breakables().$push(self);
+      }, 3);
+      self.$attr_reader("obj");
+      self.$attr_reader("width");
+      self.$attr_reader("indent");
+      return $def(self, '$output', function $$output(out, output_width) {
+        var self = this;
+
+        
+        self.group.$breakables().$shift();
+        if ($truthy(self.group['$break?']())) {
+          
+          out['$<<'](self.pp.$newline());
+          out['$<<'](self.pp.$genspace().$call(self.indent));
+          return self.indent;
+        } else {
+          
+          if ($truthy(self.group.$breakables()['$empty?']())) {
+            self.pp.$group_queue().$delete(self.group)
+          };
+          out['$<<'](self.obj);
+          return $rb_plus(output_width, self.width);
+        };
+      }, 2);
+    })($nesting[0], null);
+    (function($base, $super) {
+      var self = $klass($base, $super, 'Group');
+
+      var $proto = self.$$prototype;
+
+      $proto["break"] = nil;
+      
+      
+      $def(self, '$initialize', function $$initialize(depth) {
+        var self = this;
+
+        
+        self.depth = depth;
+        self.breakables = [];
+        return (self["break"] = false);
+      }, 1);
+      self.$attr_reader("depth");
+      self.$attr_reader("breakables");
+      
+      $def(self, '$break', function $Group_break$8() {
+        var self = this;
+
+        return (self["break"] = true)
+      }, 0);
+      
+      $def(self, '$break?', function $Group_break$ques$9() {
+        var self = this;
+
+        return self["break"]
+      }, 0);
+      return $def(self, '$first?', function $Group_first$ques$10() {
+        var $a, self = this;
+
+        if ($truthy((($a = self['first'], $a != null && $a !== nil) ? 'instance-variable' : nil))) {
+          return false
+        } else {
+          
+          self.first = false;
+          return true;
+        }
+      }, 0);
+    })($nesting[0], null);
+    (function($base, $super) {
+      var self = $klass($base, $super, 'GroupQueue');
+
+      var $proto = self.$$prototype;
+
+      $proto.queue = nil;
+      
+      
+      $def(self, '$initialize', function $$initialize($a) {
+        var $post_args, groups, self = this;
+
+        
+        
+        $post_args = Opal.slice.call(arguments);
+        
+        groups = $post_args;;
+        self.queue = [];
+        return $send(groups, 'each', [], function $$11(g){var self = $$11.$$s == null ? this : $$11.$$s;
+
+          
+          
+          if (g == null) g = nil;;
+          return self.$enq(g);}, {$$arity: 1, $$s: self});
+      }, -1);
+      
+      $def(self, '$enq', function $$enq(group) {
+        var $a, self = this, depth = nil;
+
+        
+        depth = group.$depth();
+        while (!($truthy($rb_lt(depth, self.queue.$length())))) {
+          self.queue['$<<']([])
+        };
+        return self.queue['$[]'](depth)['$<<'](group);
+      }, 1);
+      
+      $def(self, '$deq', function $$deq() {try {
+
+        var self = this;
+
+        
+        $send(self.queue, 'each', [], function $$12(gs){
+          
+          
+          if (gs == null) gs = nil;;
+          $send($rb_minus(gs.$length(), 1), 'downto', [0], function $$13(i){var group = nil;
+
+            
+            
+            if (i == null) i = nil;;
+            if ($truthy(gs['$[]'](i).$breakables()['$empty?']())) {
+              return nil
+            } else {
+              
+              group = gs['$slice!'](i, 1).$first();
+              group.$break();
+              Opal.ret(group);
+            };}, 1);
+          $send(gs, 'each', [], function $$14(group){
+            
+            
+            if (group == null) group = nil;;
+            return group.$break();}, 1);
+          return gs.$clear();}, 1);
+        return nil;
+        } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
+      }, 0);
+      return $def(self, '$delete', function $GroupQueue_delete$15(group) {
+        var self = this;
+
+        return self.queue['$[]'](group.$depth()).$delete(group)
+      }, 1);
+    })($nesting[0], null);
+    return (function($base, $super) {
+      var self = $klass($base, $super, 'SingleLine');
+
+      var $proto = self.$$prototype;
+
+      $proto.output = $proto.first = nil;
+      
+      
+      $def(self, '$initialize', function $$initialize(output, maxwidth, newline) {
+        var self = this;
+
+        
+        
+        if (maxwidth == null) maxwidth = nil;;
+        
+        if (newline == null) newline = nil;;
+        self.output = output;
+        return (self.first = [true]);
+      }, -2);
+      
+      $def(self, '$text', function $$text(obj, width) {
+        var self = this;
+
+        
+        
+        if (width == null) width = nil;;
+        return self.output['$<<'](obj);
+      }, -2);
+      
+      $def(self, '$breakable', function $$breakable(sep, width) {
+        var self = this;
+
+        
+        
+        if (sep == null) sep = " ";;
+        
+        if (width == null) width = nil;;
+        return self.output['$<<'](sep);
+      }, -1);
+      
+      $def(self, '$nest', function $$nest(indent) {
+        var $yield = $$nest.$$p || nil;
+
+        delete $$nest.$$p;
+        return Opal.yieldX($yield, []);
+      }, 1);
+      
+      $def(self, '$group', function $$group(indent, open_obj, close_obj, open_width, close_width) {
+        var $yield = $$group.$$p || nil, self = this;
+
+        delete $$group.$$p;
+        
+        
+        if (indent == null) indent = nil;;
+        
+        if (open_obj == null) open_obj = "";;
+        
+        if (close_obj == null) close_obj = "";;
+        
+        if (open_width == null) open_width = nil;;
+        
+        if (close_width == null) close_width = nil;;
+        self.first.$push(true);
+        self.output['$<<'](open_obj);
+        Opal.yieldX($yield, []);
+        self.output['$<<'](close_obj);
+        return self.first.$pop();
+      }, -1);
+      
+      $def(self, '$flush', function $$flush() {
+        
+        return nil
+      }, 0);
+      return $def(self, '$first?', function $SingleLine_first$ques$16() {
+        var self = this, result = nil, $writer = nil;
+
+        
+        result = self.first['$[]'](-1);
+        
+        $writer = [-1, false];
+        $send(self.first, '[]=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
+        return result;
+      }, 0);
+    })($nesting[0], null);
+  })($nesting[0], null, $nesting)
+};
+
+Opal.modules["pp"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $gvars = Opal.gvars, $send = Opal.send, $defs = Opal.defs, $to_a = Opal.to_a, $module = Opal.module, $eqeq = Opal.eqeq, $hash2 = Opal.hash2, $rb_minus = Opal.rb_minus, $def = Opal.def, $truthy = Opal.truthy, $rb_plus = Opal.rb_plus, $eqeqeq = Opal.eqeqeq, $neqeq = Opal.neqeq, $not = Opal.not, $rb_gt = Opal.rb_gt, $rb_le = Opal.rb_le;
+
+  Opal.add_stubs('require,new,guard_inspect_key,pp,flush,<<,bind_call,instance_method,to_proc,attr_accessor,==,[],current,compare_by_identity,[]=,-,include?,delete,text,is_a?,__getobj__,check_inspect_key,group,pretty_print_cycle,push_inspect_key,pretty_print,sharing_detection,pop_inspect_key,+,name,class,chomp,breakable,lambda,comma_breakable,__send__,call,object_address_group,seplist,pretty_print_instance_variables,===,to_s,instance_eval,include,!=,owner,inspect,respond_to?,!,pp_object,sort,instance_variables,raise,singleline_pp,dup,empty?,pp_hash,each,keys,sprintf,mcall,begin,exclude_end?,end,lines,>,size,named_captures,regexp,object_group,class_eval,string,<=,first,module_function');
+  
+  self.$require("thread");
+  self.$require("stringio");
+  self.$require("prettyprint");
+  (function($base, $super, $parent_nesting) {
+    var self = $klass($base, $super, 'PP');
+
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+    
+    $defs($$('PP'), '$pp', function $$pp(obj, out, width) {
+      var q = nil;
+      if ($gvars.stdout == null) $gvars.stdout = nil;
+
+      
+      
+      if (out == null) out = $gvars.stdout;;
+      
+      if (width == null) width = 79;;
+      q = $$('PP').$new(out, width);
+      $send(q, 'guard_inspect_key', [], function $$1(){
+        return q.$pp(obj)}, 0);
+      q.$flush();
+      return out['$<<']("\n");
+    }, -2);
+    $defs($$('PP'), '$singleline_pp', function $$singleline_pp(obj, out) {
+      var q = nil;
+      if ($gvars.stdout == null) $gvars.stdout = nil;
+
+      
+      
+      if (out == null) out = $gvars.stdout;;
+      q = $$('SingleLine').$new(out);
+      $send(q, 'guard_inspect_key', [], function $$2(){
+        return q.$pp(obj)}, 0);
+      q.$flush();
+      return out;
+    }, -2);
+    $defs($$('PP'), '$mcall', function $$mcall(obj, mod, meth, $a) {
+      var block = $$mcall.$$p || nil, $post_args, args;
+
+      delete $$mcall.$$p;
+      
+      ;
+      
+      $post_args = Opal.slice.call(arguments, 3);
+      
+      args = $post_args;;
+      return $send(mod.$instance_method(meth), 'bind_call', [obj].concat($to_a(args)), block.$to_proc());
+    }, -4);
+    self.sharing_detection = false;
+    (function(self, $parent_nesting) {
+      
+      return self.$attr_accessor("sharing_detection")
+    })(Opal.get_singleton_class(self), $nesting);
+    (function($base, $parent_nesting) {
+      var self = $module($base, 'PPMethods');
+
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+      
+      
+      $def(self, '$guard_inspect_key', function $$guard_inspect_key() {
+        var $yield = $$guard_inspect_key.$$p || nil, $writer = nil, save = nil;
+
+        delete $$guard_inspect_key.$$p;
+        
+        if ($eqeq($$('Thread').$current()['$[]']("__recursive_key__"), nil)) {
+          
+          $writer = ["__recursive_key__", $hash2([], {}).$compare_by_identity()];
+          $send($$('Thread').$current(), '[]=', $to_a($writer));
+          $writer[$rb_minus($writer["length"], 1)];
+        };
+        if ($eqeq($$('Thread').$current()['$[]']("__recursive_key__")['$[]']("inspect"), nil)) {
+          
+          $writer = ["inspect", $hash2([], {}).$compare_by_identity()];
+          $send($$('Thread').$current()['$[]']("__recursive_key__"), '[]=', $to_a($writer));
+          $writer[$rb_minus($writer["length"], 1)];
+        };
+        save = $$('Thread').$current()['$[]']("__recursive_key__")['$[]']("inspect");
+        
+        return (function() { try {
+        
+        
+        $writer = ["inspect", $hash2([], {}).$compare_by_identity()];
+        $send($$('Thread').$current()['$[]']("__recursive_key__"), '[]=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
+        return Opal.yieldX($yield, []);;
+        } finally {
+          (($writer = ["inspect", save]), $send($$('Thread').$current()['$[]']("__recursive_key__"), '[]=', $to_a($writer)), $writer[$rb_minus($writer["length"], 1)])
+        }; })();;
+      }, 0);
+      
+      $def(self, '$check_inspect_key', function $$check_inspect_key(id) {
+        var $ret_or_1 = nil, $ret_or_2 = nil;
+
+        if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = $$('Thread').$current()['$[]']("__recursive_key__"))) ? ($$('Thread').$current()['$[]']("__recursive_key__")['$[]']("inspect")) : ($ret_or_2))))) {
+          return $$('Thread').$current()['$[]']("__recursive_key__")['$[]']("inspect")['$include?'](id)
+        } else {
+          return $ret_or_1
+        }
+      }, 1);
+      
+      $def(self, '$push_inspect_key', function $$push_inspect_key(id) {
+        var $writer = nil;
+
+        
+        $writer = [id, true];
+        $send($$('Thread').$current()['$[]']("__recursive_key__")['$[]']("inspect"), '[]=', $to_a($writer));
+        return $writer[$rb_minus($writer["length"], 1)];
+      }, 1);
+      
+      $def(self, '$pop_inspect_key', function $$pop_inspect_key(id) {
+        
+        return $$('Thread').$current()['$[]']("__recursive_key__")['$[]']("inspect").$delete(id)
+      }, 1);
+      
+      $def(self, '$pp', function $$pp(obj) {try {
+
+        var $a, self = this;
+
+        
+        ;
+        
+        if (obj === null) {
+          self.$text("null")
+          Opal.ret(nil)
+        }
+        else if (obj === undefined) {
+          self.$text("undefined")
+          Opal.ret(nil)
+        }
+        else if (obj.$$class === undefined) {
+          self.$text(Object.prototype.toString.apply(obj))
+          Opal.ret(nil)
+        }
+      ;
+        if (($truthy((($a = $$$('::', 'Delegator', 'skip_raise')) ? 'constant' : nil)) && ($truthy(obj['$is_a?']($$$('Delegator')))))) {
+          obj = obj.$__getobj__()
+        };
+        if ($truthy(self.$check_inspect_key(obj))) {
+          
+          $send(self, 'group', [], function $$3(){var self = $$3.$$s == null ? this : $$3.$$s;
+
+            return obj.$pretty_print_cycle(self)}, {$$arity: 0, $$s: self});
+          return nil;
+        };
+        
+        return (function() { try {
+        
+        self.$push_inspect_key(obj);
+        return $send(self, 'group', [], function $$4(){var self = $$4.$$s == null ? this : $$4.$$s;
+
+          return obj.$pretty_print(self)}, {$$arity: 0, $$s: self});
+        } finally {
+          ($truthy($$('PP').$sharing_detection()) ? (nil) : (self.$pop_inspect_key(obj)))
+        }; })();;
+        } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
+      }, -1);
+      
+      $def(self, '$object_group', function $$object_group(obj) {
+        var block = $$object_group.$$p || nil, self = this;
+
+        delete $$object_group.$$p;
+        
+        ;
+        return $send(self, 'group', [1, $rb_plus("#<", obj.$class().$name()), ">"], block.$to_proc());
+      }, 1);
+      
+      $def(self, '$object_address_group', function $$object_address_group(obj) {
+        var block = $$object_address_group.$$p || nil, self = this, str = nil;
+
+        delete $$object_address_group.$$p;
+        
+        ;
+        str = $$('Kernel').$instance_method("to_s").$bind_call(obj);
+        str = str.$chomp(">");
+        return $send(self, 'group', [1, str, ">"], block.$to_proc());
+      }, 1);
+      
+      $def(self, '$comma_breakable', function $$comma_breakable() {
+        var self = this;
+
+        
+        self.$text(",");
+        return self.$breakable();
+      }, 0);
+      
+      $def(self, '$seplist', function $$seplist(list, sep, iter_method) {
+        var $yield = $$seplist.$$p || nil, self = this, $ret_or_1 = nil, first = nil;
+
+        delete $$seplist.$$p;
+        
+        
+        if (sep == null) sep = nil;;
+        
+        if (iter_method == null) iter_method = "each";;
+        sep = ($truthy(($ret_or_1 = sep)) ? ($ret_or_1) : ($send(self, 'lambda', [], function $$5(){var self = $$5.$$s == null ? this : $$5.$$s;
+
+          return self.$comma_breakable()}, {$$arity: 0, $$s: self})));
+        first = true;
+        return $send(list, '__send__', [iter_method], function $$6($a){var $post_args, v;
+
+          
+          
+          $post_args = Opal.slice.call(arguments);
+          
+          v = $post_args;;
+          if ($truthy(first)) {
+            first = false
+          } else {
+            sep.$call()
+          };
+          return Opal.yieldX($yield, $to_a(v));;}, -1);
+      }, -2);
+      
+      $def(self, '$pp_object', function $$pp_object(obj) {
+        var self = this;
+
+        return $send(self, 'object_address_group', [obj], function $$7(){var self = $$7.$$s == null ? this : $$7.$$s;
+
+          return $send(self, 'seplist', [obj.$pretty_print_instance_variables(), $send(self, 'lambda', [], function $$8(){var self = $$8.$$s == null ? this : $$8.$$s;
+
+            return self.$text(",")}, {$$arity: 0, $$s: self})], function $$9(v){var self = $$9.$$s == null ? this : $$9.$$s;
+
+            
+            
+            if (v == null) v = nil;;
+            self.$breakable();
+            if ($eqeqeq($$('Symbol'), v)) {
+              v = v.$to_s()
+            };
+            self.$text(v);
+            self.$text("=");
+            return $send(self, 'group', [1], function $$10(){var self = $$10.$$s == null ? this : $$10.$$s;
+
+              
+              self.$breakable("");
+              return self.$pp(obj.$instance_eval(v));}, {$$arity: 0, $$s: self});}, {$$arity: 1, $$s: self})}, {$$arity: 0, $$s: self})
+      }, 1);
+      return $def(self, '$pp_hash', function $$pp_hash(obj) {
+        var self = this;
+
+        return $send(self, 'group', [1, "{", "}"], function $$11(){var self = $$11.$$s == null ? this : $$11.$$s;
+
+          return $send(self, 'seplist', [obj, nil, "each_pair"], function $$12(k, v){var self = $$12.$$s == null ? this : $$12.$$s;
+
+            
+            
+            if (k == null) k = nil;;
+            
+            if (v == null) v = nil;;
+            return $send(self, 'group', [], function $$13(){var self = $$13.$$s == null ? this : $$13.$$s;
+
+              
+              self.$pp(k);
+              self.$text("=>");
+              return $send(self, 'group', [1], function $$14(){var self = $$14.$$s == null ? this : $$14.$$s;
+
+                
+                self.$breakable("");
+                return self.$pp(v);}, {$$arity: 0, $$s: self});}, {$$arity: 0, $$s: self});}, {$$arity: 2, $$s: self})}, {$$arity: 0, $$s: self})
+      }, 1);
+    })($nesting[0], $nesting);
+    self.$include($$('PPMethods'));
+    (function($base, $super, $parent_nesting) {
+      var self = $klass($base, $super, 'SingleLine');
+
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+      return self.$include($$('PPMethods'))
+    })($nesting[0], $$$($$('PrettyPrint'), 'SingleLine'), $nesting);
+    return (function($base, $parent_nesting) {
+      var self = $module($base, 'ObjectMixin');
+
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+      
+      
+      $def(self, '$pretty_print', function $$pretty_print(q) {
+        var self = this, umethod_method = nil, inspect_method = nil;
+
+        
+        umethod_method = $$('Object').$instance_method("method");
+        
+        try {
+          inspect_method = umethod_method.$bind_call(self, "inspect")
+        } catch ($err) {
+          if (Opal.rescue($err, [$$('NameError')])) {
+            try {
+              nil
+            } finally { Opal.pop_exception(); }
+          } else { throw $err; }
+        };;
+        if (($truthy(inspect_method) && ($neqeq(inspect_method.$owner(), $$('Kernel'))))) {
+          return q.$text(self.$inspect())
+        } else if (($not(inspect_method) && ($truthy(self['$respond_to?']("inspect"))))) {
+          return q.$text(self.$inspect())
+        } else {
+          return q.$pp_object(self)
+        };
+      }, 1);
+      
+      $def(self, '$pretty_print_cycle', function $$pretty_print_cycle(q) {
+        var self = this;
+
+        return $send(q, 'object_address_group', [self], function $$15(){
+          
+          q.$breakable();
+          return q.$text("...");}, 0)
+      }, 1);
+      
+      $def(self, '$pretty_print_instance_variables', function $$pretty_print_instance_variables() {
+        var self = this;
+
+        return self.$instance_variables().$sort()
+      }, 0);
+      return $def(self, '$pretty_print_inspect', function $$pretty_print_inspect() {
+        var self = this;
+
+        
+        if ($eqeq($$('Object').$instance_method("method").$bind_call(self, "pretty_print").$owner(), $$$($$('PP'), 'ObjectMixin'))) {
+          self.$raise("pretty_print is not overridden for " + (self.$class()))
+        };
+        return $$('PP').$singleline_pp(self, "".$dup());
+      }, 0);
+    })($nesting[0], $nesting);
+  })($nesting[0], $$('PrettyPrint'), $nesting);
+  (function($base, $super) {
+    var self = $klass($base, $super, 'Array');
+
+    
+    
+    
+    $def(self, '$pretty_print', function $$pretty_print(q) {
+      var self = this;
+
+      return $send(q, 'group', [1, "[", "]"], function $$16(){var self = $$16.$$s == null ? this : $$16.$$s;
+
+        return $send(q, 'seplist', [self], function $$17(v){
+          
+          
+          if (v == null) v = nil;;
+          return q.$pp(v);}, 1)}, {$$arity: 0, $$s: self})
+    }, 1);
+    return $def(self, '$pretty_print_cycle', function $$pretty_print_cycle(q) {
+      var self = this;
+
+      return q.$text(($truthy(self['$empty?']()) ? ("[]") : ("[...]")))
+    }, 1);
+  })($nesting[0], null);
+  (function($base, $super) {
+    var self = $klass($base, $super, 'Hash');
+
+    
+    
+    
+    $def(self, '$pretty_print', function $$pretty_print(q) {
+      var self = this;
+
+      return q.$pp_hash(self)
+    }, 1);
+    return $def(self, '$pretty_print_cycle', function $$pretty_print_cycle(q) {
+      var self = this;
+
+      return q.$text(($truthy(self['$empty?']()) ? ("{}") : ("{...}")))
+    }, 1);
+  })($nesting[0], null);
+  (function(self, $parent_nesting) {
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+    return $def(self, '$pretty_print', function $$pretty_print(q) {
+      var h = nil;
+
+      
+      h = $hash2([], {});
+      $send($$('ENV').$keys().$sort(), 'each', [], function $$18(k){var $writer = nil;
+
+        
+        
+        if (k == null) k = nil;;
+        $writer = [k, $$('ENV')['$[]'](k)];
+        $send(h, '[]=', $to_a($writer));
+        return $writer[$rb_minus($writer["length"], 1)];}, 1);
+      return q.$pp_hash(h);
+    }, 1)
+  })(Opal.get_singleton_class($$('ENV')), $nesting);
+  (function($base, $super, $parent_nesting) {
+    var self = $klass($base, $super, 'Struct');
+
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+    
+    
+    $def(self, '$pretty_print', function $$pretty_print(q) {
+      var self = this;
+
+      return $send(q, 'group', [1, self.$sprintf("#<struct %s", $$('PP').$mcall(self, $$('Kernel'), "class").$name()), ">"], function $$19(){var self = $$19.$$s == null ? this : $$19.$$s;
+
+        return $send(q, 'seplist', [$$('PP').$mcall(self, $$('Struct'), "members"), $send(self, 'lambda', [], function $$20(){
+          return q.$text(",")}, 0)], function $$21(member){var self = $$21.$$s == null ? this : $$21.$$s;
+
+          
+          
+          if (member == null) member = nil;;
+          q.$breakable();
+          q.$text(member.$to_s());
+          q.$text("=");
+          return $send(q, 'group', [1], function $$22(){var self = $$22.$$s == null ? this : $$22.$$s;
+
+            
+            q.$breakable("");
+            return q.$pp(self['$[]'](member));}, {$$arity: 0, $$s: self});}, {$$arity: 1, $$s: self})}, {$$arity: 0, $$s: self})
+    }, 1);
+    return $def(self, '$pretty_print_cycle', function $$pretty_print_cycle(q) {
+      var self = this;
+
+      return q.$text(self.$sprintf("#<struct %s:...>", $$('PP').$mcall(self, $$('Kernel'), "class").$name()))
+    }, 1);
+  })($nesting[0], null, $nesting);
+  (function($base, $super) {
+    var self = $klass($base, $super, 'Range');
+
+    
+    return $def(self, '$pretty_print', function $$pretty_print(q) {
+      var self = this;
+
+      
+      q.$pp(self.$begin());
+      q.$breakable("");
+      q.$text(($truthy(self['$exclude_end?']()) ? ("...") : ("..")));
+      q.$breakable("");
+      if ($truthy(self.$end())) {
+        return q.$pp(self.$end())
+      } else {
+        return nil
+      };
+    }, 1)
+  })($nesting[0], null);
+  (function($base, $super) {
+    var self = $klass($base, $super, 'String');
+
+    
+    return $def(self, '$pretty_print', function $$pretty_print(q) {
+      var self = this, lines = nil;
+
+      
+      lines = self.$lines();
+      if ($truthy($rb_gt(lines.$size(), 1))) {
+        return $send(q, 'group', [0, "", ""], function $$23(){var self = $$23.$$s == null ? this : $$23.$$s;
+
+          return $send(q, 'seplist', [lines, $send(self, 'lambda', [], function $$24(){
+            
+            q.$text(" +");
+            return q.$breakable();}, 0)], function $$25(v){
+            
+            
+            if (v == null) v = nil;;
+            return q.$pp(v);}, 1)}, {$$arity: 0, $$s: self})
+      } else {
+        return q.$text(self.$inspect())
+      };
+    }, 1)
+  })($nesting[0], null);
+  (function($base, $super) {
+    var self = $klass($base, $super, 'MatchData');
+
+    
+    return $def(self, '$pretty_print', function $$pretty_print(q) {
+      var self = this, nc = nil;
+
+      
+      nc = [];
+      $send(self.$regexp().$named_captures(), 'each', [], function $$26(name, indexes){
+        
+        
+        if (name == null) name = nil;;
+        
+        if (indexes == null) indexes = nil;;
+        return $send(indexes, 'each', [], function $$27(i){var $writer = nil;
+
+          
+          
+          if (i == null) i = nil;;
+          $writer = [i, name];
+          $send(nc, '[]=', $to_a($writer));
+          return $writer[$rb_minus($writer["length"], 1)];}, 1);}, 2);
+      return $send(q, 'object_group', [self], function $$28(){var self = $$28.$$s == null ? this : $$28.$$s;
+
+        
+        q.$breakable();
+        return $send(q, 'seplist', [Opal.Range.$new(0,self.$size(), true), $send(self, 'lambda', [], function $$29(){
+          return q.$breakable()}, 0)], function $$30(i){var self = $$30.$$s == null ? this : $$30.$$s;
+
+          
+          
+          if (i == null) i = nil;;
+          if ($eqeq(i, 0)) {
+            return q.$pp(self['$[]'](i))
+          } else {
+            
+            if ($truthy(nc['$[]'](i))) {
+              q.$text(nc['$[]'](i))
+            } else {
+              q.$pp(i)
+            };
+            q.$text(":");
+            return q.$pp(self['$[]'](i));
+          };}, {$$arity: 1, $$s: self});}, {$$arity: 0, $$s: self});
+    }, 1)
+  })($nesting[0], null);
+  (function($base, $super, $parent_nesting) {
+    var self = $klass($base, $super, 'Object');
+
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+    return self.$include($$$($$('PP'), 'ObjectMixin'))
+  })($nesting[0], $$('BasicObject'), $nesting);
+  $send([$$('Numeric'), $$('Symbol'), $$('FalseClass'), $$('TrueClass'), $$('NilClass'), $$('Module')], 'each', [], function $$31(c){var self = $$31.$$s == null ? this : $$31.$$s;
+
+    
+    
+    if (c == null) c = nil;;
+    return $send(c, 'class_eval', [], function $$32(){var self = $$32.$$s == null ? this : $$32.$$s;
+
+      return $def(self, '$pretty_print_cycle', function $$pretty_print_cycle(q) {
+        var self = this;
+
+        return q.$text(self.$inspect())
+      }, 1)}, {$$arity: 0, $$s: self});}, {$$arity: 1, $$s: self});
+  $send([$$('Numeric'), $$('FalseClass'), $$('TrueClass'), $$('Module')], 'each', [], function $$33(c){var self = $$33.$$s == null ? this : $$33.$$s;
+
+    
+    
+    if (c == null) c = nil;;
+    return $send(c, 'class_eval', [], function $$34(){var self = $$34.$$s == null ? this : $$34.$$s;
+
+      return $def(self, '$pretty_print', function $$pretty_print(q) {
+        var self = this;
+
+        return q.$text(self.$inspect())
+      }, 1)}, {$$arity: 0, $$s: self});}, {$$arity: 1, $$s: self});
+  return (function($base, $parent_nesting) {
+    var self = $module($base, 'Kernel');
+
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+    
+    
+    $def(self, '$pretty_inspect', function $$pretty_inspect() {
+      var self = this;
+
+      return $$('PP').$pp(self, $$('StringIO').$new()).$string()
+    }, 0);
+    
+    $def(self, '$pp', function $$pp($a) {
+      var $post_args, objs;
+
+      
+      
+      $post_args = Opal.slice.call(arguments);
+      
+      objs = $post_args;;
+      $send(objs, 'each', [], function $$35(obj){
+        
+        
+        if (obj == null) obj = nil;;
+        return $$('PP').$pp(obj);}, 1);
+      if ($truthy($rb_le(objs.$size(), 1))) {
+        return objs.$first()
+      } else {
+        return objs
+      };
+    }, -1);
+    return self.$module_function("pp");
+  })($nesting[0], $nesting);
+};
+
+Opal.modules["opal-replutils"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $truthy = Opal.truthy, $lambda = Opal.lambda, $rb_plus = Opal.rb_plus, $send = Opal.send, $rb_minus = Opal.rb_minus, $def = Opal.def, $hash2 = Opal.hash2, $klass = Opal.klass, $const_set = Opal.const_set, $to_a = Opal.to_a, $defs = Opal.defs, $gvars = Opal.gvars, $send2 = Opal.send2, $find_super = Opal.find_super, $regexp = Opal.regexp, $eqeqeq = Opal.eqeqeq;
+
+  Opal.add_stubs('require,module_function,methods,ancestors,class,instance_variables,include?,instance_methods,constants,class_variables,empty?,+,[],join,sort,map,each,&,-,name,default,colorize,inspect,pp,ls,call,full_message,gets,parse,eval_and_print,puts,[]=,new,string,guard_inspect_key,flush,<<,length,dig,scan,to_proc,tokenize,===,=~,token');
+  
+  self.$require("pp");
+  self.$require("stringio");
+  return (function($base, $parent_nesting) {
+    var self = $module($base, 'REPLUtils');
+
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+    
+    self.$module_function();
+    
+    $def(self, '$ls', function $$ls(object, colorize) {
+      var methods = nil, imethods = nil, ancestors = nil, constants = nil, ivs = nil, cvs = nil, blue = nil, dark_blue = nil, out = nil;
+
+      
+      methods = (imethods = object.$methods());
+      ancestors = object.$class().$ancestors();
+      constants = [];
+      ivs = object.$instance_variables();
+      cvs = [];
+      if ($truthy([$$('Class'), $$('Module')]['$include?'](object.$class()))) {
+        
+        imethods = object.$instance_methods();
+        ancestors = object.$ancestors();
+        constants = object.$constants();
+        cvs = object.$class_variables();
+      };
+      if ($truthy(colorize)) {
+        
+        blue = $lambda(function $$1(i){
+          
+          
+          if (i == null) i = nil;;
+          return "\u001b[1;34m" + (i) + "\u001b[0m";}, 1);
+        dark_blue = $lambda(function $$2(i){
+          
+          
+          if (i == null) i = nil;;
+          return "\u001b[34m" + (i) + "\u001b[0m";}, 1);
+      } else {
+        blue = (dark_blue = $lambda(function $$3(i){
+          
+          
+          if (i == null) i = nil;;
+          return i;}, 1))
+      };
+      out = "";
+      if (!$truthy(cvs['$empty?']())) {
+        out = $rb_plus("" + (blue['$[]']("class variables")) + ": " + ($send(cvs, 'map', [], function $$4(i){
+          
+          
+          if (i == null) i = nil;;
+          return dark_blue['$[]'](i);}, 1).$sort().$join("  ")) + "\n", out)
+      };
+      if (!$truthy(ivs['$empty?']())) {
+        out = $rb_plus("" + (blue['$[]']("instance variables")) + ": " + ($send(ivs, 'map', [], function $$5(i){
+          
+          
+          if (i == null) i = nil;;
+          return dark_blue['$[]'](i);}, 1).$sort().$join("  ")) + "\n", out)
+      };
+      $send(ancestors, 'each', [], function $$6(a){var im = nil, meths = nil;
+
+        
+        
+        if (a == null) a = nil;;
+        im = a.$instance_methods(false);
+        meths = im['$&'](imethods);
+        methods = $rb_minus(methods, meths);
+        imethods = $rb_minus(imethods, meths);
+        if (($truthy(meths['$empty?']()) || ($truthy([$$('Object'), $$('BasicObject'), $$('Kernel'), $$$($$('PP'), 'ObjectMixin')]['$include?'](a))))) {
+          return nil;
+        };
+        return (out = $rb_plus("" + (blue['$[]']("" + (a.$name()) + "#methods")) + ": " + (meths.$sort().$join("  ")) + "\n", out));}, 1);
+      methods = methods['$&'](object.$methods(false));
+      if (!$truthy(methods['$empty?']())) {
+        out = $rb_plus("" + (blue['$[]']("self.methods")) + ": " + (methods.$sort().$join("  ")) + "\n", out)
+      };
+      if (!$truthy(constants['$empty?']())) {
+        out = $rb_plus("" + (blue['$[]']("constants")) + ": " + ($send(constants, 'map', [], function $$7(i){
+          
+          
+          if (i == null) i = nil;;
+          return dark_blue['$[]'](i);}, 1).$sort().$join("  ")) + "\n", out)
+      };
+      return out;
+    }, 2);
+    
+    $def(self, '$eval_and_print', function $$eval_and_print(func, mode, colorize) {
+      var self = this, printer = nil, e = nil;
+
+      try {
+        
+        printer = ($truthy(colorize) ? ($lambda(function $$8(i){var e = nil;
+
+          
+          
+          if (i == null) i = nil;;
+          try {
+            return $$('ColorPrinter').$default(i)
+          } catch ($err) {
+            if (Opal.rescue($err, [$$('StandardError')])) {(e = $err)
+              try {
+                return $$('ColorPrinter').$colorize($$('Opal').$inspect(i))
+              } finally { Opal.pop_exception(); }
+            } else { throw $err; }
+          };}, 1)) : ($lambda(function $$9(i){var out = nil;
+
+          
+          
+          if (i == null) i = nil;;
+          try {
+            
+            out = [];
+            $$('PP').$pp(i, out);
+            return out.$join();
+          } catch ($err) {
+            if (Opal.rescue($err, [$$('StandardError')])) {
+              try {
+                return $$('Opal').$inspect(i)
+              } finally { Opal.pop_exception(); }
+            } else { throw $err; }
+          };}, 1)));
+        
+      var $_result = eval(func);
+
+      if (mode == 'silent') return nil;
+
+      if ($_result === null) {
+        return "=> null";
+      }
+      else if (typeof $_result === 'undefined') {
+        return "=> undefined";
+      }
+      else if (typeof $_result.$$class === 'undefined') {
+        try {
+          var json = JSON.stringify($_result, null, 2);
+          if (!colorize) json = $$('ColorPrinter').$colorize(json)
+          return "=> " + $_result.toString() + " => " + json;
+        }
+        catch(e) {
+          return "=> " + $_result.toString();
+        }
+      }
+      else {
+        if (mode == 'ls') {
+          return self.$ls($_result, colorize);
+        }
+        else {
+          var pretty = printer.$call($_result);
+          // Is it multiline? If yes, add a linebreak
+          if (pretty.match(/\n.*?\n/)) pretty = "\n" + pretty;
+          return "=> " + pretty;
+        }
+      }
+    ;
+      } catch ($err) {
+        if (Opal.rescue($err, [$$('Exception')])) {(e = $err)
+          try {
+            return e.$full_message($hash2(["highlight"], {"highlight": true}))
+          } finally { Opal.pop_exception(); }
+        } else { throw $err; }
+      }
+    }, 3);
+    
+    $def(self, '$js_repl', function $$js_repl() {
+      var $a, self = this, line = nil, input = nil, out = nil;
+
+      while ($truthy((line = self.$gets()))) {
+        
+        input = $$('JSON').$parse(line);
+        out = self.$eval_and_print(input['$[]']("code"), input['$[]']("mode"), input['$[]']("colors"));
+        if ($truthy(out)) {
+          self.$puts(out)
+        };
+        self.$puts("<<<ready>>>");
+      }
+    }, 0);
+    return (function($base, $super, $parent_nesting) {
+      var self = $klass($base, $super, 'ColorPrinter');
+
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $writer = nil;
+
+      
+      $const_set($nesting[0], 'TOKEN_COLORS', $hash2(["debug", "annotation", "attribute_name", "attribute_value", "binary", "char", "class", "class_variable", "color", "comment", "constant", "decorator", "definition", "directive", "docstring", "doctype", "done", "entity", "error", "exception", "float", "function", "global_variable", "hex", "id", "include", "integer", "imaginary", "important", "key", "keyword", "label", "local_variable", "namespace", "octal", "predefined", "predefined_constant", "predefined_type", "preprocessor", "pseudo_class", "regexp", "reserved", "shell", "string", "symbol", "tag", "type", "value", "variable", "insert", "delete", "change", "head"], {"debug": "\u001b[1;37;44m", "annotation": "\u001b[34m", "attribute_name": "\u001b[35m", "attribute_value": "\u001b[31m", "binary": $hash2(["self", "char", "delimiter"], {"self": "\u001b[31m", "char": "\u001b[1;31m", "delimiter": "\u001b[1;31m"}), "char": $hash2(["self", "delimiter"], {"self": "\u001b[35m", "delimiter": "\u001b[1;35m"}), "class": "\u001b[1;35;4m", "class_variable": "\u001b[36m", "color": "\u001b[32m", "comment": $hash2(["self", "char", "delimiter"], {"self": "\u001b[1;30m", "char": "\u001b[37m", "delimiter": "\u001b[37m"}), "constant": "\u001b[1;34;4m", "decorator": "\u001b[35m", "definition": "\u001b[1;33m", "directive": "\u001b[33m", "docstring": "\u001b[31m", "doctype": "\u001b[1;34m", "done": "\u001b[1;30;2m", "entity": "\u001b[31m", "error": "\u001b[1;37;41m", "exception": "\u001b[1;31m", "float": "\u001b[1;35m", "function": "\u001b[1;34m", "global_variable": "\u001b[1;32m", "hex": "\u001b[1;36m", "id": "\u001b[1;34m", "include": "\u001b[31m", "integer": "\u001b[1;34m", "imaginary": "\u001b[1;34m", "important": "\u001b[1;31m", "key": $hash2(["self", "char", "delimiter"], {"self": "\u001b[35m", "char": "\u001b[1;35m", "delimiter": "\u001b[1;35m"}), "keyword": "\u001b[32m", "label": "\u001b[1;33m", "local_variable": "\u001b[33m", "namespace": "\u001b[1;35m", "octal": "\u001b[1;34m", "predefined": "\u001b[36m", "predefined_constant": "\u001b[1;36m", "predefined_type": "\u001b[1;32m", "preprocessor": "\u001b[1;36m", "pseudo_class": "\u001b[1;34m", "regexp": $hash2(["self", "delimiter", "modifier", "char"], {"self": "\u001b[35m", "delimiter": "\u001b[1;35m", "modifier": "\u001b[35m", "char": "\u001b[1;35m"}), "reserved": "\u001b[32m", "shell": $hash2(["self", "char", "delimiter", "escape"], {"self": "\u001b[33m", "char": "\u001b[1;33m", "delimiter": "\u001b[1;33m", "escape": "\u001b[1;33m"}), "string": $hash2(["self", "modifier", "char", "delimiter", "escape"], {"self": "\u001b[31m", "modifier": "\u001b[1;31m", "char": "\u001b[1;35m", "delimiter": "\u001b[1;31m", "escape": "\u001b[1;31m"}), "symbol": $hash2(["self", "delimiter"], {"self": "\u001b[33m", "delimiter": "\u001b[1;33m"}), "tag": "\u001b[32m", "type": "\u001b[1;34m", "value": "\u001b[36m", "variable": "\u001b[34m", "insert": $hash2(["self", "insert", "eyecatcher"], {"self": "\u001b[42m", "insert": "\u001b[1;32;42m", "eyecatcher": "\u001b[102m"}), "delete": $hash2(["self", "delete", "eyecatcher"], {"self": "\u001b[41m", "delete": "\u001b[1;31;41m", "eyecatcher": "\u001b[101m"}), "change": $hash2(["self", "change"], {"self": "\u001b[44m", "change": "\u001b[37;44m"}), "head": $hash2(["self", "filename"], {"self": "\u001b[45m", "filename": "\u001b[37;45m"})}));
+      
+      $writer = ["keyword", $$('TOKEN_COLORS')['$[]']("reserved")];
+      $send($$('TOKEN_COLORS'), '[]=', $to_a($writer));
+      $writer[$rb_minus($writer["length"], 1)];;
+      
+      $writer = ["method", $$('TOKEN_COLORS')['$[]']("function")];
+      $send($$('TOKEN_COLORS'), '[]=', $to_a($writer));
+      $writer[$rb_minus($writer["length"], 1)];;
+      
+      $writer = ["escape", $$('TOKEN_COLORS')['$[]']("delimiter")];
+      $send($$('TOKEN_COLORS'), '[]=', $to_a($writer));
+      $writer[$rb_minus($writer["length"], 1)];;
+      $defs(self, '$default', function $ColorPrinter_default$10(obj, width) {
+        var self = this, pager = nil;
+
+        
+        
+        if (width == null) width = 79;;
+        pager = $$('StringIO').$new();
+        self.$pp(obj, pager, width);
+        return pager.$string();
+      }, -2);
+      $defs(self, '$pp', function $$pp(obj, output, max_width) {
+        var queue = nil;
+        if ($gvars.DEFAULT_OUTPUT == null) $gvars.DEFAULT_OUTPUT = nil;
+
+        
+        
+        if (output == null) output = $gvars.DEFAULT_OUTPUT;;
+        
+        if (max_width == null) max_width = 79;;
+        queue = $$('ColorPrinter').$new(output, max_width, "\n");
+        $send(queue, 'guard_inspect_key', [], function $$11(){
+          return queue.$pp(obj)}, 0);
+        queue.$flush();
+        return output['$<<']("\n");
+      }, -2);
+      
+      $def(self, '$text', function $$text(str, max_width) {
+        var $yield = $$text.$$p || nil, self = this;
+
+        delete $$text.$$p;
+        
+        
+        if (max_width == null) max_width = str.$length();;
+        return $send2(self, $find_super(self, 'text', $$text, false, true), 'text', [$$('ColorPrinter').$colorize(str), max_width], null);
+      }, -2);
+      $defs(self, '$token', function $$token(string, $a) {
+        var $post_args, name;
+
+        
+        
+        $post_args = Opal.slice.call(arguments, 1);
+        
+        name = $post_args;;
+        return $rb_plus($rb_plus($send($$('TOKEN_COLORS'), 'dig', $to_a(name)), string), "\u001b[0m");
+      }, -2);
+      $const_set($nesting[0], 'NUMBER', "[+-]?(?:0x[0-9a-fA-F]+|[0-9.]+(?:e[+-][0-9]+|i)?)");
+      $const_set($nesting[0], 'REGEXP', "/.*?/[iesu]*");
+      $const_set($nesting[0], 'STRING', "\".*?\"");
+      $const_set($nesting[0], 'TOKEN_REGEXP', $regexp(["(\\s+|=>|[@$:]?[a-z]\\w+|[A-Z]\\w+|", $$('NUMBER'), "|", $$('REGEXP'), "|", $$('STRING'), "|#<.*?[> ]|.)"]));
+      $defs(self, '$tokenize', function $$tokenize(str) {
+        
+        return $send(str.$scan($$('TOKEN_REGEXP')), 'map', [], "first".$to_proc())
+      }, 1);
+      return $defs(self, '$colorize', function $$colorize(str) {
+        var self = this, tokens = nil;
+
+        
+        tokens = self.$tokenize(str);
+        return $send(tokens, 'map', [], function $$12(tok){var self = $$12.$$s == null ? this : $$12.$$s, $ret_or_1 = nil;
+
+          
+          
+          if (tok == null) tok = nil;;
+          if ($eqeqeq(/^[0-9+-]/, ($ret_or_1 = tok))) {
+            if ($truthy(/[.e]/['$=~'](tok))) {
+              return self.$token(tok, "float")
+            } else {
+              return self.$token(tok, "integer")
+            }
+          } else if ($eqeqeq(/^"/, $ret_or_1)) {
+            return self.$token(tok, "string", "self")
+          } else if ($eqeqeq(/^:/, $ret_or_1)) {
+            return self.$token(tok, "symbol", "self")
+          } else if ($eqeqeq(/^[A-Z]/, $ret_or_1)) {
+            return self.$token(tok, "constant")
+          } else if (($eqeqeq("<", $ret_or_1) || (($eqeqeq("#", $ret_or_1) || (($eqeqeq(/^#</, $ret_or_1) || (($eqeqeq("=", $ret_or_1) || ($eqeqeq(">", $ret_or_1)))))))))) {
+            return self.$token(tok, "keyword")
+          } else if ($eqeqeq(/^\/./, $ret_or_1)) {
+            return self.$token(tok, "regexp", "self")
+          } else if (($eqeqeq("true", $ret_or_1) || (($eqeqeq("false", $ret_or_1) || ($eqeqeq("nil", $ret_or_1)))))) {
+            return self.$token(tok, "predefined_constant")
+          } else {
+            return tok
+          };}, {$$arity: 1, $$s: self}).$join();
+      }, 1);
+    })($nesting[0], $$$('PP'), $nesting);
+  })($nesting[0], $nesting);
+};
diff --git a/opal/master/opal-replutils.min.js b/opal/master/opal-replutils.min.js
new file mode 100644
index 00000000..55f256de
--- /dev/null
+++ b/opal/master/opal-replutils.min.js
@@ -0,0 +1 @@
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$const_set($nesting[0],"TOKEN_COLORS",$hash2(["debug","annotation","attribute_name","attribute_value","binary","char","class","class_variable","color","comment","constant","decorator","definition","directive","docstring","doctype","done","entity","error","exception","float","function","global_variable","hex","id","include","integer","imaginary","important","key","keyword","label","local_variable","namespace","octal","predefined","predefined_constant","predefined_type","preprocessor","pseudo_class","regexp","reserved","shell","string","symbol","tag","type","value","variable","insert","delete","change","head"],{debug:"",annotation:"",attribute_name:"",attribute_value:"",binary:$hash2(["self","char","delimiter"],{self:"",char:"",delimiter:""}),char:$hash2(["self","delimiter"],{self:"",delimiter:""}),class:"",class_variable:"",color:"",comment:$hash2(["self","char","delimiter"],{self:"",char:"",delimiter:""}),constant:"",decorator:"",definition:"",directive:"",docstring:"",doctype:"",done:"",entity:"",error:"",exception:"",float:"",function:"",global_variable:"",hex:"",id:"",include:"",integer:"",imaginary:"",important:"",key:$hash2(["self","char","delimiter"],{self:"",char:"",delimiter:""}),keyword:"",label:"",local_variable:"",namespace:"",octal:"",predefined:"",predefined_constant:"",predefined_type:"",preprocessor:"",pseudo_class:"",regexp:$hash2(["self","delimiter","modifier","char"],{self:"",delimiter:"",modifier:"",char:""}),reserved:"",shell:$hash2(["self","char","delimiter","escape"],{self:"",char:"",delimiter:"",escape:""}),string:$hash2(["self","modifier","char","delimiter","escape"],{self:"",modifier:"",char:"",delimiter:"",escape:""}),symbol:$hash2(["self","delimiter"],{self:"",delimiter:""}),tag:"",type:"",value:"",variable:"",insert:$hash2(["self","insert","eyecatcher"],{self:"",insert:"",eyecatcher:""}),delete:$hash2(["self","delete","eyecatcher"],{self:"",delete:"",eyecatcher:""}),change:$hash2(["self","change"],{self:"",change:""}),head:$hash2(["self","filename"],{self:"",filename:""})})),$writer=["keyword",$$("TOKEN_COLORS")["$[]"]("reserved")],$send($$("TOKEN_COLORS"),"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],$writer=["method",$$("TOKEN_COLORS")["$[]"]("function")],$send($$("TOKEN_COLORS"),"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],$writer=["escape",$$("TOKEN_COLORS")["$[]"]("delimiter")],$send($$("TOKEN_COLORS"),"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],$defs(self,"$default",(function(obj,width){var pager=nil;return null==width&&(width=79),pager=$$("StringIO").$new(),this.$pp(obj,pager,width),pager.$string()}),-2),$defs(self,"$pp",(function(obj,output,max_width){var queue=nil;return null==$gvars.DEFAULT_OUTPUT&&($gvars.DEFAULT_OUTPUT=nil),null==output&&(output=$gvars.DEFAULT_OUTPUT),null==max_width&&(max_width=79),queue=$$("ColorPrinter").$new(output,max_width,"\n"),$send(queue,"guard_inspect_key",[],(function(){return queue.$pp(obj)}),0),queue.$flush(),output["$<<"]("\n")}),-2),$def(self,"$text",(function $$text(str,max_width){return delete $$text.$$p,null==max_width&&(max_width=str.$length()),$send2(this,$find_super(this,"text",$$text,!1,!0),"text",[$$("ColorPrinter").$colorize(str),max_width],null)}),-2),$defs(self,"$token",(function(string,$a){var name;return name=Opal.slice.call(arguments,1),$rb_plus($rb_plus($send($$("TOKEN_COLORS"),"dig",$to_a(name)),string),"")}),-2),$const_set($nesting[0],"NUMBER","[+-]?(?:0x[0-9a-fA-F]+|[0-9.]+(?:e[+-][0-9]+|i)?)"),$const_set($nesting[0],"REGEXP","/.*?/[iesu]*"),$const_set($nesting[0],"STRING",'".*?"'),$const_set($nesting[0],"TOKEN_REGEXP",$regexp(["(\\s+|=>|[@$:]?[a-z]\\w+|[A-Z]\\w+|",$$("NUMBER"),"|",$$("REGEXP"),"|",$$("STRING"),"|#<.*?[> ]|.)"])),$defs(self,"$tokenize",(function(str){return $send(str.$scan($$("TOKEN_REGEXP")),"map",[],"first".$to_proc())}),1),$defs(self,"$colorize",(function(str){var tokens;return tokens=this.$tokenize(str),$send(tokens,"map",[],(function $$12(tok){var $ret_or_1,self=null==$$12.$$s?this:$$12.$$s;return null==tok&&(tok=nil),$eqeqeq(/^[0-9+-]/,$ret_or_1=tok)?$truthy(/[.e]/["$=~"](tok))?self.$token(tok,"float"):self.$token(tok,"integer"):$eqeqeq(/^"/,$ret_or_1)?self.$token(tok,"string","self"):$eqeqeq(/^:/,$ret_or_1)?self.$token(tok,"symbol","self"):$eqeqeq(/^[A-Z]/,$ret_or_1)?self.$token(tok,"constant"):$eqeqeq("<",$ret_or_1)||$eqeqeq("#",$ret_or_1)||$eqeqeq(/^#</,$ret_or_1)||$eqeqeq("=",$ret_or_1)||$eqeqeq(">",$ret_or_1)?self.$token(tok,"keyword"):$eqeqeq(/^\/./,$ret_or_1)?self.$token(tok,"regexp","self"):$eqeqeq("true",$ret_or_1)||$eqeqeq("false",$ret_or_1)||$eqeqeq("nil",$ret_or_1)?self.$token(tok,"predefined_constant"):tok}),{$$arity:1,$$s:this}).$join()}),1)}($nesting[0],$$$("PP"),$nesting)}($nesting[0],$nesting)};
diff --git a/opal/master/opal-replutils.min.js.gz b/opal/master/opal-replutils.min.js.gz
new file mode 100644
index 00000000..a6f810a0
Binary files /dev/null and b/opal/master/opal-replutils.min.js.gz differ
diff --git a/opal/master/opal-source-maps.js b/opal/master/opal-source-maps.js
index f8dfb0e3..29b12e71 100644
--- a/opal/master/opal-source-maps.js
+++ b/opal/master/opal-source-maps.js
@@ -1,12 +1,11 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["base64"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $hash2 = Opal.hash2, $truthy = Opal.truthy;
+Opal.modules["base64"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $defs = Opal.defs, $hash2 = Opal.hash2, $truthy = Opal.truthy;
 
-  Opal.add_stubs(['$raise', '$delete']);
+  Opal.add_stubs('raise,delete');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Base64');
 
-    var $nesting = [self].concat($parent_nesting), $Base64_decode64$1, $Base64_encode64$2, $Base64_strict_decode64$3, $Base64_strict_encode64$4, $Base64_urlsafe_decode64$5, $Base64_urlsafe_encode64$6;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
     
@@ -30,7 +29,7 @@ Opal.modules["base64"] = function(Opal) {
       ) {
         charCode = str.charCodeAt(idx += 3/4);
         if (charCode > 0xFF) {
-          self.$raise($$($nesting, 'ArgumentError'), "invalid character (failed: The string to be encoded contains characters outside of the Latin1 range.)");
+          self.$raise($$('ArgumentError'), "invalid character (failed: The string to be encoded contains characters outside of the Latin1 range.)");
         }
         block = block << 8 | charCode;
       }
@@ -43,7 +42,7 @@ Opal.modules["base64"] = function(Opal) {
     decode = function (input) {
       var str = String(input).replace(/=+$/, '');
       if (str.length % 4 == 1) {
-        self.$raise($$($nesting, 'ArgumentError'), "invalid base64 (failed: The string to be decoded is not correctly encoded.)");
+        self.$raise($$('ArgumentError'), "invalid base64 (failed: The string to be decoded is not correctly encoded.)");
       }
       /* eslint-disable */
       for (
@@ -64,33 +63,28 @@ Opal.modules["base64"] = function(Opal) {
       /* eslint-enable */
     };
   ;
-    Opal.defs(self, '$decode64', $Base64_decode64$1 = function $$decode64(string) {
-      var self = this;
-
+    $defs(self, '$decode64', function $$decode64(string) {
+      
       return decode(string.replace(/\r?\n/g, ''));
-    }, $Base64_decode64$1.$$arity = 1);
-    Opal.defs(self, '$encode64', $Base64_encode64$2 = function $$encode64(string) {
-      var self = this;
-
+    }, 1);
+    $defs(self, '$encode64', function $$encode64(string) {
+      
       return encode(string).replace(/(.{60})/g, "$1\n").replace(/([^\n])$/g, "$1\n");
-    }, $Base64_encode64$2.$$arity = 1);
-    Opal.defs(self, '$strict_decode64', $Base64_strict_decode64$3 = function $$strict_decode64(string) {
-      var self = this;
-
+    }, 1);
+    $defs(self, '$strict_decode64', function $$strict_decode64(string) {
+      
       return decode(string);
-    }, $Base64_strict_decode64$3.$$arity = 1);
-    Opal.defs(self, '$strict_encode64', $Base64_strict_encode64$4 = function $$strict_encode64(string) {
-      var self = this;
-
+    }, 1);
+    $defs(self, '$strict_encode64', function $$strict_encode64(string) {
+      
       return encode(string);
-    }, $Base64_strict_encode64$4.$$arity = 1);
-    Opal.defs(self, '$urlsafe_decode64', $Base64_urlsafe_decode64$5 = function $$urlsafe_decode64(string) {
-      var self = this;
-
+    }, 1);
+    $defs(self, '$urlsafe_decode64', function $$urlsafe_decode64(string) {
+      
       return decode(string.replace(/\-/g, '+').replace(/_/g, '/'));
-    }, $Base64_urlsafe_decode64$5.$$arity = 1);
-    return (Opal.defs(self, '$urlsafe_encode64', $Base64_urlsafe_encode64$6 = function $$urlsafe_encode64(string, $kwargs) {
-      var padding, self = this, str = nil;
+    }, 1);
+    return $defs(self, '$urlsafe_encode64', function $$urlsafe_encode64(string, $kwargs) {
+      var padding, str = nil;
 
       
       
@@ -101,48 +95,29 @@ Opal.modules["base64"] = function(Opal) {
       };
       
       padding = $kwargs.$$smap["padding"];
-      if (padding == null) {
-        padding = true
-      };
+      if (padding == null) padding = true;
       str = encode(string).replace(/\+/g, '-').replace(/\//g, '_');
-      if ($truthy(padding)) {
-      } else {
+      if (!$truthy(padding)) {
         str = str.$delete("=")
       };
       return str;
-    }, $Base64_urlsafe_encode64$6.$$arity = -2), nil) && 'urlsafe_encode64';
+    }, -2);
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["json"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $hash2 = Opal.hash2, $truthy = Opal.truthy;
+Opal.modules["json"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $klass = Opal.klass, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $Object = Opal.Object, $hash2 = Opal.hash2, $eqeqeq = Opal.eqeqeq, $defs = Opal.defs, $truthy = Opal.truthy, $def = Opal.def;
 
-  Opal.add_stubs(['$raise', '$new', '$push', '$[]=', '$-', '$[]', '$create_id', '$json_create', '$const_get', '$attr_accessor', '$create_id=', '$===', '$parse', '$generate', '$from_object', '$merge', '$to_json', '$responds_to?', '$to_io', '$write', '$to_s', '$to_a', '$strftime']);
+  Opal.add_stubs('raise,new,push,[]=,-,[],create_id,json_create,const_get,attr_accessor,create_id=,===,parse,generate,from_object,merge,to_json,responds_to?,to_io,write,to_s,to_a,strftime');
   
   (function($base, $parent_nesting) {
     var self = $module($base, 'JSON');
 
-    var $nesting = [self].concat($parent_nesting), $JSON_$$$1, $JSON_parse$2, $JSON_parse$excl$3, $JSON_load$4, $JSON_from_object$5, $JSON_generate$6, $JSON_dump$7, $writer = nil;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $writer = nil;
 
     
-    (function($base, $super, $parent_nesting) {
-      var self = $klass($base, $super, 'JSONError');
-
-      var $nesting = [self].concat($parent_nesting);
-
-      return nil
-    })($nesting[0], $$($nesting, 'StandardError'), $nesting);
-    (function($base, $super, $parent_nesting) {
-      var self = $klass($base, $super, 'ParserError');
-
-      var $nesting = [self].concat($parent_nesting);
-
-      return nil
-    })($nesting[0], $$($nesting, 'JSONError'), $nesting);
+    $klass($nesting[0], $$('StandardError'), 'JSONError');
+    $klass($nesting[0], $$('JSONError'), 'ParserError');
     
     var $hasOwn = Opal.hasOwnProperty;
 
@@ -150,7 +125,7 @@ Opal.modules["json"] = function(Opal) {
       try {
         return JSON.parse(source);
       } catch (e) {
-        self.$raise($$$($$($nesting, 'JSON'), 'ParserError'), e.message);
+        self.$raise($$$($$('JSON'), 'ParserError'), e.message);
       }
     };
 
@@ -187,12 +162,12 @@ Opal.modules["json"] = function(Opal) {
 
             for (k in value) {
               if ($hasOwn.call(value, k)) {
-                (($writer = [k, to_opal(value[k], options)]), $send((hash), '[]=', Opal.to_a($writer)), $writer[$rb_minus($writer["length"], 1)]);
+                (($writer = [k, to_opal(value[k], options)]), $send((hash), '[]=', $to_a($writer)), $writer[$rb_minus($writer["length"], 1)]);
               }
             }
 
-            if (!options.parse && (klass = (hash)['$[]']($$($nesting, 'JSON').$create_id())) != nil) {
-              return $$$('::', 'Object').$const_get(klass).$json_create(hash);
+            if (!options.parse && (klass = (hash)['$[]']($$('JSON').$create_id())) != nil) {
+              return $Object.$const_get(klass).$json_create(hash);
             }
             else {
               return hash;
@@ -202,146 +177,126 @@ Opal.modules["json"] = function(Opal) {
     };
   ;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("create_id")
     })(Opal.get_singleton_class(self), $nesting);
     
     $writer = ["json_class"];
-    $send(self, 'create_id=', Opal.to_a($writer));
+    $send(self, 'create_id=', $to_a($writer));
     $writer[$rb_minus($writer["length"], 1)];;
-    Opal.defs(self, '$[]', $JSON_$$$1 = function(value, options) {
+    $defs(self, '$[]', function $JSON_$$$1(value, options) {
       var self = this;
 
       
       
-      if (options == null) {
-        options = $hash2([], {});
-      };
-      if ($truthy($$($nesting, 'String')['$==='](value))) {
+      if (options == null) options = $hash2([], {});;
+      if ($eqeqeq($$('String'), value)) {
         return self.$parse(value, options)
       } else {
         return self.$generate(value, options)
       };
-    }, $JSON_$$$1.$$arity = -2);
-    Opal.defs(self, '$parse', $JSON_parse$2 = function $$parse(source, options) {
+    }, -2);
+    $defs(self, '$parse', function $$parse(source, options) {
       var self = this;
 
       
       
-      if (options == null) {
-        options = $hash2([], {});
-      };
+      if (options == null) options = $hash2([], {});;
       return self.$from_object($parse(source), options.$merge($hash2(["parse"], {"parse": true})));
-    }, $JSON_parse$2.$$arity = -2);
-    Opal.defs(self, '$parse!', $JSON_parse$excl$3 = function(source, options) {
+    }, -2);
+    $defs(self, '$parse!', function $JSON_parse$excl$2(source, options) {
       var self = this;
 
       
       
-      if (options == null) {
-        options = $hash2([], {});
-      };
+      if (options == null) options = $hash2([], {});;
       return self.$parse(source, options);
-    }, $JSON_parse$excl$3.$$arity = -2);
-    Opal.defs(self, '$load', $JSON_load$4 = function $$load(source, options) {
+    }, -2);
+    $defs(self, '$load', function $$load(source, options) {
       var self = this;
 
       
       
-      if (options == null) {
-        options = $hash2([], {});
-      };
+      if (options == null) options = $hash2([], {});;
       return self.$from_object($parse(source), options);
-    }, $JSON_load$4.$$arity = -2);
-    Opal.defs(self, '$from_object', $JSON_from_object$5 = function $$from_object(js_object, options) {
-      var self = this, $ret_or_1 = nil, $writer = nil, $ret_or_2 = nil;
+    }, -2);
+    $defs(self, '$from_object', function $$from_object(js_object, options) {
+      var $ret_or_1 = nil, $writer = nil;
 
       
       
-      if (options == null) {
-        options = $hash2([], {});
-      };
+      if (options == null) options = $hash2([], {});;
       if ($truthy(($ret_or_1 = options['$[]']("object_class")))) {
         $ret_or_1
       } else {
         
-        $writer = ["object_class", $$($nesting, 'Hash')];
-        $send(options, '[]=', Opal.to_a($writer));
+        $writer = ["object_class", $$('Hash')];
+        $send(options, '[]=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];
       };
-      if ($truthy(($ret_or_2 = options['$[]']("array_class")))) {
-        $ret_or_2
+      if ($truthy(($ret_or_1 = options['$[]']("array_class")))) {
+        $ret_or_1
       } else {
         
-        $writer = ["array_class", $$($nesting, 'Array')];
-        $send(options, '[]=', Opal.to_a($writer));
+        $writer = ["array_class", $$('Array')];
+        $send(options, '[]=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];
       };
       return to_opal(js_object, options.$$smap);;
-    }, $JSON_from_object$5.$$arity = -2);
-    Opal.defs(self, '$generate', $JSON_generate$6 = function $$generate(obj, options) {
-      var self = this;
-
+    }, -2);
+    $defs(self, '$generate', function $$generate(obj, options) {
       
       
-      if (options == null) {
-        options = $hash2([], {});
-      };
+      
+      if (options == null) options = $hash2([], {});;
       return obj.$to_json(options);
-    }, $JSON_generate$6.$$arity = -2);
-    return (Opal.defs(self, '$dump', $JSON_dump$7 = function $$dump(obj, io, limit) {
+    }, -2);
+    return $defs(self, '$dump', function $$dump(obj, io, limit) {
       var self = this, string = nil;
 
       
       
-      if (io == null) {
-        io = nil;
-      };
+      if (io == null) io = nil;;
       
-      if (limit == null) {
-        limit = nil;
-      };
+      if (limit == null) limit = nil;;
       string = self.$generate(obj);
       if ($truthy(io)) {
         
         if ($truthy(io['$responds_to?']("to_io"))) {
-          io = io.$to_io()};
+          io = io.$to_io()
+        };
         io.$write(string);
         return io;
       } else {
         return string
       };
-    }, $JSON_dump$7.$$arity = -2), nil) && 'dump';
+    }, -2);
   })($nesting[0], $nesting);
-  (function($base, $super, $parent_nesting) {
+  (function($base, $super) {
     var self = $klass($base, $super, 'Object');
 
-    var $nesting = [self].concat($parent_nesting), $Object_to_json$8;
-
-    return (Opal.def(self, '$to_json', $Object_to_json$8 = function $$to_json() {
+    
+    return $def(self, '$to_json', function $$to_json() {
       var self = this;
 
       return self.$to_s().$to_json()
-    }, $Object_to_json$8.$$arity = 0), nil) && 'to_json'
-  })($nesting[0], null, $nesting);
-  (function($base, $parent_nesting) {
+    }, 0)
+  })($nesting[0], null);
+  (function($base) {
     var self = $module($base, 'Enumerable');
 
-    var $nesting = [self].concat($parent_nesting), $Enumerable_to_json$9;
-
-    return (Opal.def(self, '$to_json', $Enumerable_to_json$9 = function $$to_json() {
+    
+    return $def(self, '$to_json', function $$to_json() {
       var self = this;
 
       return self.$to_a().$to_json()
-    }, $Enumerable_to_json$9.$$arity = 0), nil) && 'to_json'
-  })($nesting[0], $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 0)
+  })($nesting[0]);
+  (function($base, $super) {
     var self = $klass($base, $super, 'Array');
 
-    var $nesting = [self].concat($parent_nesting), $Array_to_json$10;
-
-    return (Opal.def(self, '$to_json', $Array_to_json$10 = function $$to_json() {
+    
+    return $def(self, '$to_json', function $$to_json() {
       var self = this;
 
       
@@ -353,25 +308,23 @@ Opal.modules["json"] = function(Opal) {
 
       return '[' + result.join(',') + ']';
     
-    }, $Array_to_json$10.$$arity = 0), nil) && 'to_json'
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 0)
+  })($nesting[0], null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'Boolean');
 
-    var $nesting = [self].concat($parent_nesting), $Boolean_to_json$11;
-
-    return (Opal.def(self, '$to_json', $Boolean_to_json$11 = function $$to_json() {
+    
+    return $def(self, '$to_json', function $$to_json() {
       var self = this;
 
       return (self == true) ? 'true' : 'false';
-    }, $Boolean_to_json$11.$$arity = 0), nil) && 'to_json'
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 0)
+  })($nesting[0], null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'Hash');
 
-    var $nesting = [self].concat($parent_nesting), $Hash_to_json$12;
-
-    return (Opal.def(self, '$to_json', $Hash_to_json$12 = function $$to_json() {
+    
+    return $def(self, '$to_json', function $$to_json() {
       var self = this;
 
       
@@ -392,88 +345,81 @@ Opal.modules["json"] = function(Opal) {
 
       return '{' + result.join(',') + '}';
     
-    }, $Hash_to_json$12.$$arity = 0), nil) && 'to_json'
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 0)
+  })($nesting[0], null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'NilClass');
 
-    var $nesting = [self].concat($parent_nesting), $NilClass_to_json$13;
-
-    return (Opal.def(self, '$to_json', $NilClass_to_json$13 = function $$to_json() {
-      var self = this;
-
+    
+    return $def(self, '$to_json', function $$to_json() {
+      
       return "null"
-    }, $NilClass_to_json$13.$$arity = 0), nil) && 'to_json'
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 0)
+  })($nesting[0], null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'Numeric');
 
-    var $nesting = [self].concat($parent_nesting), $Numeric_to_json$14;
-
-    return (Opal.def(self, '$to_json', $Numeric_to_json$14 = function $$to_json() {
+    
+    return $def(self, '$to_json', function $$to_json() {
       var self = this;
 
       return self.toString();
-    }, $Numeric_to_json$14.$$arity = 0), nil) && 'to_json'
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 0)
+  })($nesting[0], null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'String');
 
-    var $nesting = [self].concat($parent_nesting), $String_to_json$15;
-
-    return (Opal.def(self, '$to_json', $String_to_json$15 = function $$to_json() {
+    
+    return $def(self, '$to_json', function $$to_json() {
       var self = this;
 
       return JSON.stringify(self);
-    }, $String_to_json$15.$$arity = 0), nil) && 'to_json'
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 0)
+  })($nesting[0], null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'Time');
 
-    var $nesting = [self].concat($parent_nesting), $Time_to_json$16;
-
-    return (Opal.def(self, '$to_json', $Time_to_json$16 = function $$to_json() {
+    
+    return $def(self, '$to_json', function $$to_json() {
       var self = this;
 
       return self.$strftime("%FT%T%z").$to_json()
-    }, $Time_to_json$16.$$arity = 0), nil) && 'to_json'
-  })($nesting[0], null, $nesting);
-  return (function($base, $super, $parent_nesting) {
+    }, 0)
+  })($nesting[0], null);
+  return (function($base, $super) {
     var self = $klass($base, $super, 'Date');
 
-    var $nesting = [self].concat($parent_nesting), $Date_to_json$17, $Date_as_json$18;
-
     
     
-    Opal.def(self, '$to_json', $Date_to_json$17 = function $$to_json() {
+    
+    $def(self, '$to_json', function $$to_json() {
       var self = this;
 
       return self.$to_s().$to_json()
-    }, $Date_to_json$17.$$arity = 0);
-    return (Opal.def(self, '$as_json', $Date_as_json$18 = function $$as_json() {
+    }, 0);
+    return $def(self, '$as_json', function $$as_json() {
       var self = this;
 
       return self.$to_s()
-    }, $Date_as_json$18.$$arity = 0), nil) && 'as_json';
-  })($nesting[0], null, $nesting);
+    }, 0);
+  })($nesting[0], null);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/source_map/map"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $truthy = Opal.truthy;
+Opal.modules["opal/source_map/map"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $truthy = Opal.truthy, $def = Opal.def, $to_ary = Opal.to_ary;
 
-  Opal.add_stubs(['$require', '$map', '$to_json', '$to_h', '$to_s', '$delete', '$encode64', '$generated_code']);
+  Opal.add_stubs('require,map,to_json,to_h,to_s,delete,encode64,generated_code');
   
   self.$require("base64");
   self.$require("json");
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Map');
 
-    var $nesting = [self].concat($parent_nesting), $Map_to_h$1, $Map_to_json$2, $Map_as_json$3, $Map_to_s$4, $Map_to_data_uri_comment$5, $Map_cache$6, $Map_marshal_dump$7, $Map_marshal_load$8;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
     
-    Opal.def(self, '$to_h', $Map_to_h$1 = function $$to_h() {
+    $def(self, '$to_h', function $$to_h() {
       var self = this, $ret_or_1 = nil;
       if (self.to_h == null) self.to_h = nil;
 
@@ -482,128 +428,105 @@ Opal.modules["opal/source_map/map"] = function(Opal) {
       } else {
         return self.$map()
       }
-    }, $Map_to_h$1.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_json', $Map_to_json$2 = function $$to_json() {
+    $def(self, '$to_json', function $$to_json() {
       var self = this;
 
       return self.$to_h().$to_json()
-    }, $Map_to_json$2.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$as_json', $Map_as_json$3 = function $$as_json($a) {
-      var $post_args, self = this;
+    $def(self, '$as_json', function $$as_json($a) {
+      var $post_args, $rest_arg, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
-      ;
+      $post_args = Opal.slice.call(arguments);
+      
+      $rest_arg = $post_args;;
       return self.$to_h();
-    }, $Map_as_json$3.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$to_s', $Map_to_s$4 = function $$to_s() {
+    $def(self, '$to_s', function $$to_s() {
       var self = this;
 
       return self.$to_h().$to_s()
-    }, $Map_to_s$4.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_data_uri_comment', $Map_to_data_uri_comment$5 = function $$to_data_uri_comment() {
+    $def(self, '$to_data_uri_comment', function $$to_data_uri_comment() {
       var self = this;
 
-      return "" + "//# sourceMappingURL=data:application/json;base64," + ($$($nesting, 'Base64').$encode64(self.$to_json()).$delete("\n"))
-    }, $Map_to_data_uri_comment$5.$$arity = 0);
+      return "//# sourceMappingURL=data:application/json;base64," + ($$('Base64').$encode64(self.$to_json()).$delete("\n"))
+    }, 0);
     
-    Opal.def(self, '$cache', $Map_cache$6 = function $$cache() {
-      var self = this, $ret_or_2 = nil;
+    $def(self, '$cache', function $$cache() {
+      var self = this, $ret_or_1 = nil;
       if (self.to_h == null) self.to_h = nil;
 
       
-      self.to_h = (function() {if ($truthy(($ret_or_2 = self.to_h))) {
-        return $ret_or_2
-      } else {
-        return self.$map()
-      }; return nil; })();
+      self.to_h = ($truthy(($ret_or_1 = self.to_h)) ? ($ret_or_1) : (self.$map()));
       return self;
-    }, $Map_cache$6.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$marshal_dump', $Map_marshal_dump$7 = function $$marshal_dump() {
+    $def(self, '$marshal_dump', function $$marshal_dump() {
       var self = this;
 
       return [self.$to_h(), self.$generated_code()]
-    }, $Map_marshal_dump$7.$$arity = 0);
-    return (Opal.def(self, '$marshal_load', $Map_marshal_load$8 = function $$marshal_load(value) {
+    }, 0);
+    return $def(self, '$marshal_load', function $$marshal_load(value) {
       var $a, $b, self = this;
 
-      return $b = value, $a = Opal.to_ary($b), (self.to_h = ($a[0] == null ? nil : $a[0])), (self.generated_code = ($a[1] == null ? nil : $a[1])), $b
-    }, $Map_marshal_load$8.$$arity = 1), nil) && 'marshal_load';
-  })($$$($$($nesting, 'Opal'), 'SourceMap'), $nesting);
+      return $b = value, $a = $to_ary($b), (self.to_h = ($a[0] == null ? nil : $a[0])), (self.generated_code = ($a[1] == null ? nil : $a[1])), $b
+    }, 1);
+  })($$$($$('Opal'), 'SourceMap'), $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/source_map/file"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy, $hash2 = Opal.hash2;
-
-  Opal.add_stubs(['$include', '$attr_reader', '$new', '$size', '$[]=', '$-', '$join', '$map', '$to_proc', '$file', '$force_encoding', '$source', '$names', '$encode_mappings', '$relative_mappings', '$absolute_mappings', '$sort_by', '$to_a', '$line', '$<', '$column', '$source_map_name', '$[]', '$to_s', '$to_int', '$each', '$fragments_by_line', '$<<', '$segment_from_fragment', '$+', '$private', '$flat_map', '$fragments', '$code', '$split', '$with_index', '$zero?', '$!', '$last']);
+Opal.modules["opal/source_map/file"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $def = Opal.def, $truthy = Opal.truthy, $hash2 = Opal.hash2, $rb_lt = Opal.rb_lt, $to_ary = Opal.to_ary, $rb_plus = Opal.rb_plus, $not = Opal.not;
+
+  Opal.add_stubs('include,attr_reader,new,size,[]=,-,join,map,to_proc,file,force_encoding,source,names,encode_mappings,relative_mappings,absolute_mappings,sort_by,to_a,line,<,column,source_map_name,[],to_s,to_int,each,fragments_by_line,skip_source_map?,is_a?,<<,segment_from_fragment,+,private,flat_map,fragments,code,split,with_index,!,zero?,last');
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'File');
 
-    var $nesting = [self].concat($parent_nesting), $File_initialize$1, $File_generated_code$3, $File_map$4, $File_names$5, $File_segment_from_fragment$8, $File_relative_mappings$9, $File_absolute_mappings$12, $File_fragments_by_line$15;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-    self.$$prototype.generated_code = self.$$prototype.fragments = self.$$prototype.names = self.$$prototype.names_map = self.$$prototype.relative_mappings = self.$$prototype.absolute_mappings = nil;
+    $proto.generated_code = $proto.fragments = $proto.names = $proto.names_map = $proto.relative_mappings = $proto.absolute_mappings = nil;
     
-    self.$include($$$($$$($$($nesting, 'Opal'), 'SourceMap'), 'Map'));
+    self.$include($$$($$$($$('Opal'), 'SourceMap'), 'Map'));
     self.$attr_reader("fragments");
     self.$attr_reader("file");
     self.$attr_reader("source");
     
-    Opal.def(self, '$initialize', $File_initialize$1 = function $$initialize(fragments, file, source, generated_code) {
-      var $$2, self = this;
+    $def(self, '$initialize', function $$initialize(fragments, file, source, generated_code) {
+      var self = this;
 
       
       
-      if (generated_code == null) {
-        generated_code = nil;
-      };
+      if (generated_code == null) generated_code = nil;;
       self.fragments = fragments;
       self.file = file;
       self.source = source;
-      self.names_map = $send($$($nesting, 'Hash'), 'new', [], ($$2 = function(hash, name){var self = $$2.$$s == null ? this : $$2.$$s, $writer = nil;
+      self.names_map = $send($$('Hash'), 'new', [], function $$1(hash, name){var $writer = nil;
 
         
         
-        if (hash == null) {
-          hash = nil;
-        };
+        if (hash == null) hash = nil;;
         
-        if (name == null) {
-          name = nil;
-        };
+        if (name == null) name = nil;;
         $writer = [name, hash.$size()];
-        $send(hash, '[]=', Opal.to_a($writer));
-        return $writer[$rb_minus($writer["length"], 1)];}, $$2.$$s = self, $$2.$$arity = 2, $$2));
+        $send(hash, '[]=', $to_a($writer));
+        return $writer[$rb_minus($writer["length"], 1)];}, 2);
       self.generated_code = generated_code;
       return (self.absolute_mappings = nil);
-    }, $File_initialize$1.$$arity = -4);
+    }, -4);
     
-    Opal.def(self, '$generated_code', $File_generated_code$3 = function $$generated_code() {
+    $def(self, '$generated_code', function $$generated_code() {
       var self = this, $ret_or_1 = nil;
 
-      return (self.generated_code = (function() {if ($truthy(($ret_or_1 = self.generated_code))) {
-        return $ret_or_1
-      } else {
-        return $send(self.fragments, 'map', [], "code".$to_proc()).$join()
-      }; return nil; })())
-    }, $File_generated_code$3.$$arity = 0);
+      return (self.generated_code = ($truthy(($ret_or_1 = self.generated_code)) ? ($ret_or_1) : ($send(self.fragments, 'map', [], "code".$to_proc()).$join())))
+    }, 0);
     
-    Opal.def(self, '$map', $File_map$4 = function $$map($kwargs) {
+    $def(self, '$map', function $$map($kwargs) {
       var source_root, self = this;
 
       
@@ -615,247 +538,165 @@ Opal.modules["opal/source_map/file"] = function(Opal) {
       };
       
       source_root = $kwargs.$$smap["source_root"];
-      if (source_root == null) {
-        source_root = ""
-      };
-      return $hash2(["version", "sourceRoot", "sources", "sourcesContent", "names", "mappings"], {"version": 3, "sourceRoot": source_root, "sources": [self.$file()], "sourcesContent": [self.$source().$force_encoding("UTF-8")], "names": self.$names(), "mappings": $$$($$$($$($nesting, 'Opal'), 'SourceMap'), 'VLQ').$encode_mappings(self.$relative_mappings())});
-    }, $File_map$4.$$arity = -1);
+      if (source_root == null) source_root = "";
+      return $hash2(["version", "sourceRoot", "sources", "sourcesContent", "names", "mappings"], {"version": 3, "sourceRoot": source_root, "sources": [self.$file()], "sourcesContent": [self.$source().$force_encoding("UTF-8")], "names": self.$names(), "mappings": $$$($$$($$('Opal'), 'SourceMap'), 'VLQ').$encode_mappings(self.$relative_mappings())});
+    }, -1);
     
-    Opal.def(self, '$names', $File_names$5 = function $$names() {
-      var $$6, $$7, self = this, $ret_or_2 = nil;
+    $def(self, '$names', function $$names() {
+      var self = this, $ret_or_1 = nil;
 
-      return (self.names = (function() {if ($truthy(($ret_or_2 = self.names))) {
-        return $ret_or_2
-      } else {
+      return (self.names = ($truthy(($ret_or_1 = self.names)) ? ($ret_or_1) : ((self.$absolute_mappings(), $send($send(self.names_map.$to_a(), 'sort_by', [], function $$2(_, index){
         
-        self.$absolute_mappings();
-        return $send($send(self.names_map.$to_a(), 'sort_by', [], ($$6 = function(_, index){var self = $$6.$$s == null ? this : $$6.$$s;
-
-          
-          
-          if (_ == null) {
-            _ = nil;
-          };
-          
-          if (index == null) {
-            index = nil;
-          };
-          return index;}, $$6.$$s = self, $$6.$$arity = 2, $$6)), 'map', [], ($$7 = function(name, _){var self = $$7.$$s == null ? this : $$7.$$s;
-
-          
-          
-          if (name == null) {
-            name = nil;
-          };
-          
-          if (_ == null) {
-            _ = nil;
-          };
-          return name;}, $$7.$$s = self, $$7.$$arity = 2, $$7));
-      }; return nil; })())
-    }, $File_names$5.$$arity = 0);
+        
+        if (_ == null) _ = nil;;
+        
+        if (index == null) index = nil;;
+        return index;}, 2), 'map', [], function $$3(name, _){
+        
+        
+        if (name == null) name = nil;;
+        
+        if (_ == null) _ = nil;;
+        return name;}, 2)))))
+    }, 0);
     
-    Opal.def(self, '$segment_from_fragment', $File_segment_from_fragment$8 = function $$segment_from_fragment(fragment, generated_column) {
-      var self = this, source_index = nil, original_line = nil, original_column = nil, map_name_index = nil, $ret_or_3 = nil, $writer = nil;
+    $def(self, '$segment_from_fragment', function $$segment_from_fragment(fragment, generated_column) {
+      var self = this, source_index = nil, original_line = nil, $ret_or_1 = nil, original_column = nil, map_name_index = nil, $writer = nil;
 
       
       source_index = 0;
-      original_line = $rb_minus(fragment.$line(), 1);
-      if ($truthy($rb_lt(original_line, 1))) {
-        original_line = 1};
-      original_column = fragment.$column();
+      original_line = $rb_minus(($truthy(($ret_or_1 = fragment.$line())) ? ($ret_or_1) : (0)), 1);
+      if ($truthy($rb_lt(original_line, 0))) {
+        original_line = 0
+      };
+      original_column = ($truthy(($ret_or_1 = fragment.$column())) ? ($ret_or_1) : (0));
       if ($truthy(fragment.$source_map_name())) {
         
-        map_name_index = (function() {if ($truthy(($ret_or_3 = self.names_map['$[]'](fragment.$source_map_name().$to_s())))) {
-          return $ret_or_3
-        } else {
-          
-          $writer = [fragment.$source_map_name().$to_s(), self.names_map.$size()];
-          $send(self.names_map, '[]=', Opal.to_a($writer));
-          return $writer[$rb_minus($writer["length"], 1)];
-        }; return nil; })();
+        map_name_index = ($truthy(($ret_or_1 = self.names_map['$[]'](fragment.$source_map_name().$to_s()))) ? ($ret_or_1) : ((($writer = [fragment.$source_map_name().$to_s(), self.names_map.$size()]), $send(self.names_map, '[]=', $to_a($writer)), $writer[$rb_minus($writer["length"], 1)])));
         return [generated_column, source_index, original_line, original_column, map_name_index];
       } else {
         return [generated_column, source_index, original_line, original_column]
       };
-    }, $File_segment_from_fragment$8.$$arity = 2);
+    }, 2);
     
-    Opal.def(self, '$relative_mappings', $File_relative_mappings$9 = function $$relative_mappings() {
-      var $$10, self = this, $ret_or_4 = nil, reference_segment = nil, reference_name_index = nil;
+    $def(self, '$relative_mappings', function $$relative_mappings() {
+      var self = this, $ret_or_1 = nil, reference_segment = nil, reference_name_index = nil;
+
+      return (self.relative_mappings = ($truthy(($ret_or_1 = self.relative_mappings)) ? ($ret_or_1) : (((reference_segment = [0, 0, 0, 0, 0]), (reference_name_index = 0), $send(self.$absolute_mappings(), 'map', [], function $$4(absolute_mapping){var $writer = nil;
 
-      return (self.relative_mappings = (function() {if ($truthy(($ret_or_4 = self.relative_mappings))) {
-        return $ret_or_4
-      } else {
         
-        reference_segment = [0, 0, 0, 0, 0];
-        reference_name_index = 0;
-        return $send(self.$absolute_mappings(), 'map', [], ($$10 = function(absolute_mapping){var self = $$10.$$s == null ? this : $$10.$$s, $$11, $writer = nil;
+        
+        if (absolute_mapping == null) absolute_mapping = nil;;
+        
+        $writer = [0, 0];
+        $send(reference_segment, '[]=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
+        return $send(absolute_mapping, 'map', [], function $$5(absolute_segment){var segment = nil, $ret_or_2 = nil;
 
           
           
-          if (absolute_mapping == null) {
-            absolute_mapping = nil;
-          };
+          if (absolute_segment == null) absolute_segment = nil;;
+          segment = [];
           
-          $writer = [0, 0];
-          $send(reference_segment, '[]=', Opal.to_a($writer));
+          $writer = [0, $rb_minus(absolute_segment['$[]'](0), reference_segment['$[]'](0))];
+          $send(segment, '[]=', $to_a($writer));
           $writer[$rb_minus($writer["length"], 1)];;
-          return $send(absolute_mapping, 'map', [], ($$11 = function(absolute_segment){var self = $$11.$$s == null ? this : $$11.$$s, segment = nil, $ret_or_5 = nil, $ret_or_6 = nil, $ret_or_7 = nil, $ret_or_8 = nil;
-
-            
-            
-            if (absolute_segment == null) {
-              absolute_segment = nil;
-            };
-            segment = [];
-            
-            $writer = [0, $rb_minus(absolute_segment['$[]'](0), reference_segment['$[]'](0))];
-            $send(segment, '[]=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];;
-            
-            $writer = [1, $rb_minus(absolute_segment['$[]'](1), (function() {if ($truthy(($ret_or_5 = reference_segment['$[]'](1)))) {
-              return $ret_or_5
-            } else {
-              return 0
-            }; return nil; })())];
-            $send(segment, '[]=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];;
+          
+          $writer = [1, $rb_minus(absolute_segment['$[]'](1), ($truthy(($ret_or_2 = reference_segment['$[]'](1))) ? ($ret_or_2) : (0)))];
+          $send(segment, '[]=', $to_a($writer));
+          $writer[$rb_minus($writer["length"], 1)];;
+          
+          $writer = [2, $rb_minus(absolute_segment['$[]'](2), ($truthy(($ret_or_2 = reference_segment['$[]'](2))) ? ($ret_or_2) : (0)))];
+          $send(segment, '[]=', $to_a($writer));
+          $writer[$rb_minus($writer["length"], 1)];;
+          
+          $writer = [3, $rb_minus(absolute_segment['$[]'](3), ($truthy(($ret_or_2 = reference_segment['$[]'](3))) ? ($ret_or_2) : (0)))];
+          $send(segment, '[]=', $to_a($writer));
+          $writer[$rb_minus($writer["length"], 1)];;
+          if ($truthy(absolute_segment['$[]'](4))) {
             
-            $writer = [2, $rb_minus(absolute_segment['$[]'](2), (function() {if ($truthy(($ret_or_6 = reference_segment['$[]'](2)))) {
-              return $ret_or_6
-            } else {
-              return 0
-            }; return nil; })())];
-            $send(segment, '[]=', Opal.to_a($writer));
-            $writer[$rb_minus($writer["length"], 1)];;
             
-            $writer = [3, $rb_minus(absolute_segment['$[]'](3), (function() {if ($truthy(($ret_or_7 = reference_segment['$[]'](3)))) {
-              return $ret_or_7
-            } else {
-              return 0
-            }; return nil; })())];
-            $send(segment, '[]=', Opal.to_a($writer));
+            $writer = [4, $rb_minus(absolute_segment['$[]'](4).$to_int(), ($truthy(($ret_or_2 = reference_segment['$[]'](4))) ? ($ret_or_2) : (reference_name_index)).$to_int())];
+            $send(segment, '[]=', $to_a($writer));
             $writer[$rb_minus($writer["length"], 1)];;
-            if ($truthy(absolute_segment['$[]'](4))) {
-              
-              
-              $writer = [4, $rb_minus(absolute_segment['$[]'](4).$to_int(), (function() {if ($truthy(($ret_or_8 = reference_segment['$[]'](4)))) {
-                return $ret_or_8
-              } else {
-                return reference_name_index
-              }; return nil; })().$to_int())];
-              $send(segment, '[]=', Opal.to_a($writer));
-              $writer[$rb_minus($writer["length"], 1)];;
-              reference_name_index = absolute_segment['$[]'](4);};
-            reference_segment = absolute_segment;
-            return segment;}, $$11.$$s = self, $$11.$$arity = 1, $$11));}, $$10.$$s = self, $$10.$$arity = 1, $$10));
-      }; return nil; })())
-    }, $File_relative_mappings$9.$$arity = 0);
+            reference_name_index = absolute_segment['$[]'](4);
+          };
+          reference_segment = absolute_segment;
+          return segment;}, 1);}, 1)))))
+    }, 0);
     
-    Opal.def(self, '$absolute_mappings', $File_absolute_mappings$12 = function $$absolute_mappings() {
-      var $$13, self = this, $ret_or_9 = nil, mappings = nil;
+    $def(self, '$absolute_mappings', function $$absolute_mappings() {
+      var self = this, $ret_or_1 = nil, mappings = nil;
+
+      return (self.absolute_mappings = ($truthy(($ret_or_1 = self.absolute_mappings)) ? ($ret_or_1) : (((mappings = []), $send(self.$fragments_by_line(), 'each', [], function $$6(raw_segments){var self = $$6.$$s == null ? this : $$6.$$s, generated_column = nil, segments = nil;
 
-      return (self.absolute_mappings = (function() {if ($truthy(($ret_or_9 = self.absolute_mappings))) {
-        return $ret_or_9
-      } else {
         
-        mappings = [];
-        $send(self.$fragments_by_line(), 'each', [], ($$13 = function(raw_segments){var self = $$13.$$s == null ? this : $$13.$$s, $$14, generated_column = nil, segments = nil;
+        
+        if (raw_segments == null) raw_segments = nil;;
+        generated_column = 0;
+        segments = [];
+        $send(raw_segments, 'each', [], function $$7($mlhs_tmp1){var $a, $b, self = $$7.$$s == null ? this : $$7.$$s, generated_code = nil, fragment = nil;
 
           
           
-          if (raw_segments == null) {
-            raw_segments = nil;
+          if ($mlhs_tmp1 == null) $mlhs_tmp1 = nil;;
+          $b = $mlhs_tmp1, $a = $to_ary($b), (generated_code = ($a[0] == null ? nil : $a[0])), (fragment = ($a[1] == null ? nil : $a[1])), $b;
+          if (!($truthy(fragment['$is_a?']($$$($$('Opal'), 'Fragment'))) && ($truthy(fragment['$skip_source_map?']())))) {
+            segments['$<<'](self.$segment_from_fragment(fragment, generated_column))
           };
-          generated_column = 0;
-          segments = [];
-          $send(raw_segments, 'each', [], ($$14 = function($mlhs_tmp1){var self = $$14.$$s == null ? this : $$14.$$s, $a, $b, generated_code = nil, fragment = nil, $ret_or_10 = nil;
-
-            
-            
-            if ($mlhs_tmp1 == null) {
-              $mlhs_tmp1 = nil;
-            };
-            $b = $mlhs_tmp1, $a = Opal.to_ary($b), (generated_code = ($a[0] == null ? nil : $a[0])), (fragment = ($a[1] == null ? nil : $a[1])), $b;
-            if ($truthy((function() {if ($truthy(($ret_or_10 = fragment.$line()))) {
-              return fragment.$column()
-            } else {
-              return $ret_or_10
-            }; return nil; })())) {
-              segments['$<<'](self.$segment_from_fragment(fragment, generated_column))};
-            return (generated_column = $rb_plus(generated_column, generated_code.$size()));}, $$14.$$s = self, $$14.$$arity = 1, $$14.$$has_top_level_mlhs_arg = true, $$14));
-          return mappings['$<<'](segments);}, $$13.$$s = self, $$13.$$arity = 1, $$13));
-        return mappings;
-      }; return nil; })())
-    }, $File_absolute_mappings$12.$$arity = 0);
+          return (generated_column = $rb_plus(generated_column, generated_code.$size()));}, {$$arity: 1, $$s: self, $$has_top_level_mlhs_arg: true});
+        return mappings['$<<'](segments);}, {$$arity: 1, $$s: self}), mappings))))
+    }, 0);
     self.$private();
-    return (Opal.def(self, '$fragments_by_line', $File_fragments_by_line$15 = function $$fragments_by_line() {
-      var $$16, self = this, raw_mappings = nil;
+    return $def(self, '$fragments_by_line', function $$fragments_by_line() {
+      var self = this, raw_mappings = nil;
 
       
       raw_mappings = [[]];
-      $send(self.$fragments(), 'flat_map', [], ($$16 = function(fragment){var self = $$16.$$s == null ? this : $$16.$$s, $$17, fragment_code = nil, fragment_lines = nil;
+      $send(self.$fragments(), 'flat_map', [], function $$8(fragment){var fragment_code = nil, fragment_lines = nil;
 
         
         
-        if (fragment == null) {
-          fragment = nil;
-        };
+        if (fragment == null) fragment = nil;;
         fragment_code = fragment.$code();
         fragment_lines = fragment_code.$split("\n", -1);
-        return $send(fragment_lines.$each(), 'with_index', [], ($$17 = function(fragment_line, index){var self = $$17.$$s == null ? this : $$17.$$s, raw_segment = nil, $ret_or_11 = nil, $ret_or_12 = nil;
+        return $send(fragment_lines.$each(), 'with_index', [], function $$9(fragment_line, index){var raw_segment = nil;
 
           
           
-          if (fragment_line == null) {
-            fragment_line = nil;
-          };
+          if (fragment_line == null) fragment_line = nil;;
           
-          if (index == null) {
-            index = nil;
-          };
+          if (index == null) index = nil;;
           raw_segment = [fragment_line, fragment];
-          if ($truthy((function() {if ($truthy(($ret_or_11 = index['$zero?']()))) {
-            return fragment_line.$size()['$zero?']()['$!']()
-          } else {
-            return $ret_or_11
-          }; return nil; })())) {
+          if (($truthy(index['$zero?']()) && ($not(fragment_line.$size()['$zero?']())))) {
             return raw_mappings.$last()['$<<'](raw_segment)
-          } else if ($truthy((function() {if ($truthy(($ret_or_12 = index['$zero?']()))) {
-            return fragment_line.$size()['$zero?']()
-          } else {
-            return $ret_or_12
-          }; return nil; })())) {
+          } else if (($truthy(index['$zero?']()) && ($truthy(fragment_line.$size()['$zero?']())))) {
             return nil
           } else if ($truthy(fragment_line.$size()['$zero?']())) {
             return raw_mappings['$<<']([])
           } else {
             return raw_mappings['$<<']([raw_segment])
-          };}, $$17.$$s = self, $$17.$$arity = 2, $$17));}, $$16.$$s = self, $$16.$$arity = 1, $$16));
+          };}, 2);}, 1);
       return raw_mappings;
-    }, $File_fragments_by_line$15.$$arity = 0), nil) && 'fragments_by_line';
-  })($$$($$($nesting, 'Opal'), 'SourceMap'), null, $nesting)
+    }, 0);
+  })($$$($$('Opal'), 'SourceMap'), null, $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/source_map/index"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $hash2 = Opal.hash2, $send = Opal.send, $truthy = Opal.truthy;
+Opal.modules["opal/source_map/index"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $hash2 = Opal.hash2, $def = Opal.def, $send = Opal.send, $truthy = Opal.truthy, $rb_plus = Opal.rb_plus;
 
-  Opal.add_stubs(['$include', '$attr_reader', '$map', '$to_h', '$generated_code', '$+', '$count', '$[]', '$rindex', '$size']);
+  Opal.add_stubs('include,attr_reader,map,to_h,generated_code,+,count,[],rindex,size');
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Index');
 
-    var $nesting = [self].concat($parent_nesting), $Index_initialize$1, $Index_map$2;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-    self.$$prototype.source_maps = nil;
+    $proto.source_maps = nil;
     
-    self.$include($$$($$$($$($nesting, 'Opal'), 'SourceMap'), 'Map'));
+    self.$include($$$($$$($$('Opal'), 'SourceMap'), 'Map'));
     self.$attr_reader("source_maps");
     
-    Opal.def(self, '$initialize', $Index_initialize$1 = function $$initialize(source_maps, $kwargs) {
+    $def(self, '$initialize', function $$initialize(source_maps, $kwargs) {
       var join, self = this;
 
       
@@ -867,119 +708,94 @@ Opal.modules["opal/source_map/index"] = function(Opal) {
       };
       
       join = $kwargs.$$smap["join"];
-      if (join == null) {
-        join = nil
-      };
+      if (join == null) join = nil;
       self.source_maps = source_maps;
       return (self.join = join);
-    }, $Index_initialize$1.$$arity = -2);
-    return (Opal.def(self, '$map', $Index_map$2 = function $$map() {
-      var $$3, self = this, offset_line = nil, offset_column = nil;
+    }, -2);
+    return $def(self, '$map', function $$map() {
+      var self = this, offset_line = nil, offset_column = nil;
 
       
       offset_line = 0;
       offset_column = 0;
-      return $hash2(["version", "sections"], {"version": 3, "sections": $send(self.source_maps, 'map', [], ($$3 = function(source_map){var self = $$3.$$s == null ? this : $$3.$$s, map = nil, generated_code = nil, new_lines_count = nil, last_line = nil;
+      return $hash2(["version", "sections"], {"version": 3, "sections": $send(self.source_maps, 'map', [], function $$1(source_map){var self = $$1.$$s == null ? this : $$1.$$s, map = nil, generated_code = nil, new_lines_count = nil, last_line = nil;
         if (self.join == null) self.join = nil;
 
         
         
-        if (source_map == null) {
-          source_map = nil;
-        };
+        if (source_map == null) source_map = nil;;
         map = $hash2(["offset", "map"], {"offset": $hash2(["line", "column"], {"line": offset_line, "column": offset_column}), "map": source_map.$to_h()});
         generated_code = source_map.$generated_code();
         if ($truthy(self.join)) {
-          generated_code = $rb_plus(generated_code, self.join)};
+          generated_code = $rb_plus(generated_code, self.join)
+        };
         new_lines_count = generated_code.$count("\n");
         last_line = generated_code['$[]'](Opal.Range.$new($rb_plus(generated_code.$rindex("\n"), 1), -1, false));
         offset_line = $rb_plus(offset_line, new_lines_count);
         offset_column = $rb_plus(offset_column, last_line.$size());
-        return map;}, $$3.$$s = self, $$3.$$arity = 1, $$3))});
-    }, $Index_map$2.$$arity = 0), nil) && 'map';
-  })($$$($$($nesting, 'Opal'), 'SourceMap'), null, $nesting)
+        return map;}, {$$arity: 1, $$s: self})});
+    }, 0);
+  })($$$($$('Opal'), 'SourceMap'), null, $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/source_map/vlq"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $send = Opal.send, $range = Opal.range, $hash2 = Opal.hash2, $truthy = Opal.truthy;
-
-  Opal.add_stubs(['$<<', '$-', '$split', '$inject', '$[]', '$[]=', '$each', '$<', '$+', '$-@', '$loop', '$&', '$>>', '$>', '$|', '$join', '$any?', '$shift', '$raise', '$==', '$map', '$encode', '$each_with_index', '$decode']);
+Opal.modules["opal/source_map/vlq"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $const_set = Opal.const_set, $rb_minus = Opal.rb_minus, $send = Opal.send, $range = Opal.range, $hash2 = Opal.hash2, $to_a = Opal.to_a, $truthy = Opal.truthy, $rb_lt = Opal.rb_lt, $rb_plus = Opal.rb_plus, $rb_gt = Opal.rb_gt, $defs = Opal.defs, $eqeq = Opal.eqeq;
+
+  Opal.add_stubs('<<,-,split,inject,[],[]=,each,<,+,-@,loop,&,>>,>,|,join,any?,shift,raise,==,map,encode,each_with_index,decode');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'VLQ');
 
-    var $nesting = [self].concat($parent_nesting), $VLQ$1, $VLQ_encode$2, $VLQ_decode$5, $VLQ_encode_mappings$6, $VLQ_decode_mappings$9;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
-    Opal.const_set($nesting[0], 'VLQ_BASE_SHIFT', 5);
-    Opal.const_set($nesting[0], 'VLQ_BASE', (1)['$<<']($$($nesting, 'VLQ_BASE_SHIFT')));
-    Opal.const_set($nesting[0], 'VLQ_BASE_MASK', $rb_minus($$($nesting, 'VLQ_BASE'), 1));
-    Opal.const_set($nesting[0], 'VLQ_CONTINUATION_BIT', $$($nesting, 'VLQ_BASE'));
-    Opal.const_set($nesting[0], 'BASE64_DIGITS', "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/".$split(""));
-    Opal.const_set($nesting[0], 'BASE64_VALUES', $send($range(0, 64, true), 'inject', [$hash2([], {})], ($VLQ$1 = function(h, i){var self = $VLQ$1.$$s == null ? this : $VLQ$1.$$s, $writer = nil;
+    $const_set($nesting[0], 'VLQ_BASE_SHIFT', 5);
+    $const_set($nesting[0], 'VLQ_BASE', (1)['$<<']($$('VLQ_BASE_SHIFT')));
+    $const_set($nesting[0], 'VLQ_BASE_MASK', $rb_minus($$('VLQ_BASE'), 1));
+    $const_set($nesting[0], 'VLQ_CONTINUATION_BIT', $$('VLQ_BASE'));
+    $const_set($nesting[0], 'BASE64_DIGITS', "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/".$split(""));
+    $const_set($nesting[0], 'BASE64_VALUES', $send($range(0, 64, true), 'inject', [$hash2([], {})], function $VLQ$1(h, i){var $writer = nil;
 
       
       
-      if (h == null) {
-        h = nil;
-      };
+      if (h == null) h = nil;;
       
-      if (i == null) {
-        i = nil;
-      };
+      if (i == null) i = nil;;
       
-      $writer = [$$($nesting, 'BASE64_DIGITS')['$[]'](i), i];
-      $send(h, '[]=', Opal.to_a($writer));
+      $writer = [$$('BASE64_DIGITS')['$[]'](i), i];
+      $send(h, '[]=', $to_a($writer));
       $writer[$rb_minus($writer["length"], 1)];;
-      return h;}, $VLQ$1.$$s = self, $VLQ$1.$$arity = 2, $VLQ$1)));
-    Opal.defs(self, '$encode', $VLQ_encode$2 = function $$encode(ary) {
-      var $$3, self = this, result = nil;
+      return h;}, 2));
+    $defs(self, '$encode', function $$encode(ary) {
+      var self = this, result = nil;
 
       
       result = [];
-      (function(){var $brk = Opal.new_brk(); try {return $send(ary, 'each', [], ($$3 = function(n){var self = $$3.$$s == null ? this : $$3.$$s, $$4, vlq = nil;
+      (function(){var $brk = Opal.new_brk(); try {return $send(ary, 'each', [], function $$2(n){var self = $$2.$$s == null ? this : $$2.$$s, vlq = nil;
 
         
         
-        if (n == null) {
-          n = nil;
-        };
-        vlq = (function() {if ($truthy($rb_lt(n, 0))) {
-          return $rb_plus(n['$-@']()['$<<'](1), 1)
-        } else {
-          return n['$<<'](1)
-        }; return nil; })();
-        return (function(){var $brk = Opal.new_brk(); try {return $send(self, 'loop', [], ($$4 = function(){var self = $$4.$$s == null ? this : $$4.$$s, digit = nil;
+        if (n == null) n = nil;;
+        vlq = ($truthy($rb_lt(n, 0)) ? ($rb_plus(n['$-@']()['$<<'](1), 1)) : (n['$<<'](1)));
+        return (function(){var $brk = Opal.new_brk(); try {return $send(self, 'loop', [], function $$3(){var digit = nil;
 
           
-          digit = vlq['$&']($$($nesting, 'VLQ_BASE_MASK'));
-          vlq = vlq['$>>']($$($nesting, 'VLQ_BASE_SHIFT'));
+          digit = vlq['$&']($$('VLQ_BASE_MASK'));
+          vlq = vlq['$>>']($$('VLQ_BASE_SHIFT'));
           if ($truthy($rb_gt(vlq, 0))) {
-            digit = digit['$|']($$($nesting, 'VLQ_CONTINUATION_BIT'))};
-          result['$<<']($$($nesting, 'BASE64_DIGITS')['$[]'](digit));
+            digit = digit['$|']($$('VLQ_CONTINUATION_BIT'))
+          };
+          result['$<<']($$('BASE64_DIGITS')['$[]'](digit));
           if ($truthy($rb_gt(vlq, 0))) {
             return nil
           } else {
             
             Opal.brk(nil, $brk)
-          };}, $$4.$$s = self, $$4.$$brk = $brk, $$4.$$arity = 0, $$4))
-        } catch (err) { if (err === $brk) { return err.$v } else { throw err } }})();}, $$3.$$s = self, $$3.$$brk = $brk, $$3.$$arity = 1, $$3))
+          };}, {$$arity: 0, $$brk: $brk})
+        } catch (err) { if (err === $brk) { return err.$v } else { throw err } }})();}, {$$arity: 1, $$s: self, $$brk: $brk})
       } catch (err) { if (err === $brk) { return err.$v } else { throw err } }})();
       return result.$join();
-    }, $VLQ_encode$2.$$arity = 1);
-    Opal.defs(self, '$decode', $VLQ_decode$5 = function $$decode(str) {
+    }, 1);
+    $defs(self, '$decode', function $$decode(str) {
       var $a, $b, self = this, result = nil, chars = nil, vlq = nil, shift = nil, continuation = nil, char$ = nil, digit = nil;
 
       
@@ -993,105 +809,88 @@ Opal.modules["opal/source_map/vlq"] = function(Opal) {
         while ($truthy(continuation)) {
           
           char$ = chars.$shift();
-          if ($truthy(char$)) {
-          } else {
-            self.$raise($$($nesting, 'ArgumentError'))
+          if (!$truthy(char$)) {
+            self.$raise($$('ArgumentError'))
+          };
+          digit = $$('BASE64_VALUES')['$[]'](char$);
+          if ($eqeq(digit['$&']($$('VLQ_CONTINUATION_BIT')), 0)) {
+            continuation = false
           };
-          digit = $$($nesting, 'BASE64_VALUES')['$[]'](char$);
-          if (digit['$&']($$($nesting, 'VLQ_CONTINUATION_BIT'))['$=='](0)) {
-            continuation = false};
-          digit = digit['$&']($$($nesting, 'VLQ_BASE_MASK'));
+          digit = digit['$&']($$('VLQ_BASE_MASK'));
           vlq = $rb_plus(vlq, digit['$<<'](shift));
-          shift = $rb_plus(shift, $$($nesting, 'VLQ_BASE_SHIFT'));
+          shift = $rb_plus(shift, $$('VLQ_BASE_SHIFT'));
         };
-        result['$<<']((function() {if (vlq['$&'](1)['$=='](1)) {
-          return vlq['$>>'](1)['$-@']()
-        } else {
-          return vlq['$>>'](1)
-        }; return nil; })());
+        result['$<<'](($eqeq(vlq['$&'](1), 1) ? (vlq['$>>'](1)['$-@']()) : (vlq['$>>'](1))));
       };
       return result;
-    }, $VLQ_decode$5.$$arity = 1);
-    Opal.defs(self, '$encode_mappings', $VLQ_encode_mappings$6 = function $$encode_mappings(ary) {
-      var $$7, self = this;
+    }, 1);
+    $defs(self, '$encode_mappings', function $$encode_mappings(ary) {
+      var self = this;
 
-      return $send(ary, 'map', [], ($$7 = function(group){var self = $$7.$$s == null ? this : $$7.$$s, $$8;
+      return $send(ary, 'map', [], function $$4(group){var self = $$4.$$s == null ? this : $$4.$$s;
 
         
         
-        if (group == null) {
-          group = nil;
-        };
-        return $send(group, 'map', [], ($$8 = function(segment){var self = $$8.$$s == null ? this : $$8.$$s;
+        if (group == null) group = nil;;
+        return $send(group, 'map', [], function $$5(segment){var self = $$5.$$s == null ? this : $$5.$$s;
 
           
           
-          if (segment == null) {
-            segment = nil;
-          };
-          return self.$encode(segment);}, $$8.$$s = self, $$8.$$arity = 1, $$8)).$join(",");}, $$7.$$s = self, $$7.$$arity = 1, $$7)).$join(";")
-    }, $VLQ_encode_mappings$6.$$arity = 1);
-    return (Opal.defs(self, '$decode_mappings', $VLQ_decode_mappings$9 = function $$decode_mappings(str) {
-      var $$10, self = this, mappings = nil;
+          if (segment == null) segment = nil;;
+          return self.$encode(segment);}, {$$arity: 1, $$s: self}).$join(",");}, {$$arity: 1, $$s: self}).$join(";")
+    }, 1);
+    return $defs(self, '$decode_mappings', function $$decode_mappings(str) {
+      var self = this, mappings = nil;
 
       
       mappings = [];
-      $send(str.$split(";"), 'each_with_index', [], ($$10 = function(group, index){var self = $$10.$$s == null ? this : $$10.$$s, $$11, $writer = nil;
+      $send(str.$split(";"), 'each_with_index', [], function $$6(group, index){var self = $$6.$$s == null ? this : $$6.$$s, $writer = nil;
 
         
         
-        if (group == null) {
-          group = nil;
-        };
+        if (group == null) group = nil;;
         
-        if (index == null) {
-          index = nil;
-        };
+        if (index == null) index = nil;;
         
         $writer = [index, []];
-        $send(mappings, '[]=', Opal.to_a($writer));
+        $send(mappings, '[]=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
-        return $send(group.$split(","), 'each', [], ($$11 = function(segment){var self = $$11.$$s == null ? this : $$11.$$s;
+        return $send(group.$split(","), 'each', [], function $$7(segment){var self = $$7.$$s == null ? this : $$7.$$s;
 
           
           
-          if (segment == null) {
-            segment = nil;
-          };
-          return mappings['$[]'](index)['$<<'](self.$decode(segment));}, $$11.$$s = self, $$11.$$arity = 1, $$11));}, $$10.$$s = self, $$10.$$arity = 2, $$10));
+          if (segment == null) segment = nil;;
+          return mappings['$[]'](index)['$<<'](self.$decode(segment));}, {$$arity: 1, $$s: self});}, {$$arity: 2, $$s: self});
       return mappings;
-    }, $VLQ_decode_mappings$9.$$arity = 1), nil) && 'decode_mappings';
-  })($$$($$($nesting, 'Opal'), 'SourceMap'), $nesting)
+    }, 1);
+  })($$$($$('Opal'), 'SourceMap'), $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/source_map"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module;
+Opal.modules["opal/source_map"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module;
 
-  Opal.add_stubs(['$autoload']);
+  Opal.add_stubs('autoload');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Opal');
 
     var $nesting = [self].concat($parent_nesting);
 
-    return (function($base, $parent_nesting) {
+    return (function($base) {
       var self = $module($base, 'SourceMap');
 
-      var $nesting = [self].concat($parent_nesting);
-
+      
       
       self.$autoload("Map", "opal/source_map/map");
       self.$autoload("File", "opal/source_map/file");
       self.$autoload("Index", "opal/source_map/index");
       return self.$autoload("VLQ", "opal/source_map/vlq");
-    })($nesting[0], $nesting)
+    })($nesting[0])
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal-source-maps"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$;
+Opal.modules["opal-source-maps"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, nil = Opal.nil;
 
-  Opal.add_stubs(['$require']);
+  Opal.add_stubs('require');
   return self.$require("opal/source_map")
 };
diff --git a/opal/master/opal-source-maps.min.js b/opal/master/opal-source-maps.min.js
index 4d75727e..a9476241 100644
--- a/opal/master/opal-source-maps.min.js
+++ b/opal/master/opal-source-maps.min.js
@@ -1 +1 @@
-Opal.modules.base64=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$hash2=Opal.hash2,$truthy=Opal.truthy;return Opal.add_stubs(["$raise","$delete"]),function($base,$Base64_urlsafe_encode64$6){var self=$module($base,"Base64"),$nesting=[self].concat($Base64_urlsafe_encode64$6),chars="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",encode=function(input){for(var block,charCode,str=String(input),idx=0,map=chars,output="";str.charAt(0|idx)||(map="=",idx%1);output+=map.charAt(63&block>>8-idx%1*8))255<(charCode=str.charCodeAt(idx+=.75))&&self.$raise($$($nesting,"ArgumentError"),"invalid character (failed: The string to be encoded contains characters outside of the Latin1 range.)"),block=block<<8|charCode;return output},decode=function(input){var str=String(input).replace(/=+$/,"");str.length%4==1&&self.$raise($$($nesting,"ArgumentError"),"invalid base64 (failed: The string to be decoded is not correctly encoded.)");for(var bs,buffer,bc=0,idx=0,output="";buffer=str.charAt(idx++);~buffer&&(bs=bc%4?64*bs+buffer:buffer,bc++%4)&&(output+=String.fromCharCode(255&bs>>(-2*bc&6))))buffer=chars.indexOf(buffer);return output};return Opal.defs(self,"$decode64",$Base64_urlsafe_encode64$6=function(string){return decode(string.replace(/\r?\n/g,""))},$Base64_urlsafe_encode64$6.$$arity=1),Opal.defs(self,"$encode64",$Base64_urlsafe_encode64$6=function(string){return encode(string).replace(/(.{60})/g,"$1\n").replace(/([^\n])$/g,"$1\n")},$Base64_urlsafe_encode64$6.$$arity=1),Opal.defs(self,"$strict_decode64",$Base64_urlsafe_encode64$6=function(string){return decode(string)},$Base64_urlsafe_encode64$6.$$arity=1),Opal.defs(self,"$strict_encode64",$Base64_urlsafe_encode64$6=function(string){return encode(string)},$Base64_urlsafe_encode64$6.$$arity=1),Opal.defs(self,"$urlsafe_decode64",$Base64_urlsafe_encode64$6=function(string){return decode(string.replace(/\-/g,"+").replace(/_/g,"/"))},$Base64_urlsafe_encode64$6.$$arity=1),Opal.defs(self,"$urlsafe_encode64",$Base64_urlsafe_encode64$6=function(string,padding){var str=nil;if(null==padding)padding=$hash2([],{});else if(!padding.$$is_hash)throw Opal.ArgumentError.$new("expected kwargs");return null==(padding=padding.$$smap.padding)&&(padding=!0),str=encode(string).replace(/\+/g,"-").replace(/\//g,"_"),$truthy(padding)||(str=str.$delete("=")),str},$Base64_urlsafe_encode64$6.$$arity=-2),nil&&"urlsafe_encode64"}($nesting[0],$nesting)},Opal.modules.json=function(Opal){function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}Opal.top;var $Object_to_json$8,$parent_nesting,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$klass=Opal.klass,$send=Opal.send,$hash2=Opal.hash2,$truthy=Opal.truthy;return Opal.add_stubs(["$raise","$new","$push","$[]=","$-","$[]","$create_id","$json_create","$const_get","$attr_accessor","$create_id=","$===","$parse","$generate","$from_object","$merge","$to_json","$responds_to?","$to_io","$write","$to_s","$to_a","$strftime"]),function($base,$JSON_dump$7){var self=$module($base,"JSON"),$nesting=[self].concat($JSON_dump$7),$writer=nil;!function($base,$super,$parent_nesting){[$klass($base,$super,"JSONError")].concat($parent_nesting)}($nesting[0],$$($nesting,"StandardError"),$nesting),function($base,$super,$parent_nesting){[$klass($base,$super,"ParserError")].concat($parent_nesting)}($nesting[0],$$($nesting,"JSONError"),$nesting);var $hasOwn=Opal.hasOwnProperty;function $parse(source){try{return JSON.parse(source)}catch(e){self.$raise($$$($$($nesting,"JSON"),"ParserError"),e.message)}}function to_opal(value,options){var klass,arr,hash,i,ii,k;switch(typeof value){case"string":case"number":return value;case"boolean":return!!value;case"undefined":return nil;case"object":if(!value)return nil;if(value.$$is_array){for(arr=options.array_class.$new(),i=0,ii=value.length;i<ii;i++)arr.$push(to_opal(value[i],options));return arr}for(k in hash=options.object_class.$new(),value)$hasOwn.call(value,k)&&($writer=[k,to_opal(value[k],options)],$send(hash,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]);return options.parse||(klass=hash["$[]"]($$($nesting,"JSON").$create_id()))==nil?hash:$$$("::","Object").$const_get(klass).$json_create(hash)}}(function(self,$parent_nesting){[self].concat($parent_nesting),self.$attr_accessor("create_id")})(Opal.get_singleton_class(self),$nesting),$writer=["json_class"],$send(self,"create_id=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)],Opal.defs(self,"$[]",$JSON_dump$7=function(value,options){return null==options&&(options=$hash2([],{})),$truthy($$($nesting,"String")["$==="](value))?this.$parse(value,options):this.$generate(value,options)},$JSON_dump$7.$$arity=-2),Opal.defs(self,"$parse",$JSON_dump$7=function(source,options){return null==options&&(options=$hash2([],{})),this.$from_object($parse(source),options.$merge($hash2(["parse"],{parse:!0})))},$JSON_dump$7.$$arity=-2),Opal.defs(self,"$parse!",$JSON_dump$7=function(source,options){return null==options&&(options=$hash2([],{})),this.$parse(source,options)},$JSON_dump$7.$$arity=-2),Opal.defs(self,"$load",$JSON_dump$7=function(source,options){return null==options&&(options=$hash2([],{})),this.$from_object($parse(source),options)},$JSON_dump$7.$$arity=-2),Opal.defs(self,"$from_object",$JSON_dump$7=function(js_object,options){var $writer=nil;return null==options&&(options=$hash2([],{})),$truthy(options["$[]"]("object_class"))||($writer=["object_class",$$($nesting,"Hash")],$send(options,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]),$truthy(options["$[]"]("array_class"))||($writer=["array_class",$$($nesting,"Array")],$send(options,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]),to_opal(js_object,options.$$smap)},$JSON_dump$7.$$arity=-2),Opal.defs(self,"$generate",$JSON_dump$7=function(obj,options){return null==options&&(options=$hash2([],{})),obj.$to_json(options)},$JSON_dump$7.$$arity=-2),Opal.defs(self,"$dump",$JSON_dump$7=function(obj,io,limit){var string;return null==io&&(io=nil),null==limit&&(limit=nil),string=this.$generate(obj),$truthy(io)?($truthy(io["$responds_to?"]("to_io"))&&(io=io.$to_io()),io.$write(string),io):string},$JSON_dump$7.$$arity=-2)}($nesting[0],$nesting),[$Object_to_json$8=$klass($Object_to_json$8=($parent_nesting=$nesting)[0],null,"Object")].concat($parent_nesting),Opal.def($Object_to_json$8,"$to_json",$Object_to_json$8=function(){return this.$to_s().$to_json()},$Object_to_json$8.$$arity=0),function($Enumerable_to_json$9,$parent_nesting){[$Enumerable_to_json$9=$module($Enumerable_to_json$9,"Enumerable")].concat($parent_nesting),Opal.def($Enumerable_to_json$9,"$to_json",$Enumerable_to_json$9=function(){return this.$to_a().$to_json()},$Enumerable_to_json$9.$$arity=0)}($nesting[0],$nesting),function($Array_to_json$10,$parent_nesting){[$Array_to_json$10=$klass($Array_to_json$10,null,"Array")].concat($parent_nesting),Opal.def($Array_to_json$10,"$to_json",$Array_to_json$10=function(){for(var result=[],i=0,length=this.length;i<length;i++)result.push(this[i].$to_json());return"["+result.join(",")+"]"},$Array_to_json$10.$$arity=0)}($nesting[0],$nesting),function($Boolean_to_json$11,$parent_nesting){[$Boolean_to_json$11=$klass($Boolean_to_json$11,null,"Boolean")].concat($parent_nesting),Opal.def($Boolean_to_json$11,"$to_json",$Boolean_to_json$11=function(){return 1==this?"true":"false"},$Boolean_to_json$11.$$arity=0)}($nesting[0],$nesting),function($Hash_to_json$12,$parent_nesting){[$Hash_to_json$12=$klass($Hash_to_json$12,null,"Hash")].concat($parent_nesting),Opal.def($Hash_to_json$12,"$to_json",$Hash_to_json$12=function(){for(var key,value,result=[],i=0,keys=this.$$keys,length=keys.length;i<length;i++)(key=keys[i]).$$is_string?value=this.$$smap[key]:(value=key.value,key=key.key),result.push(key.$to_s().$to_json()+":"+value.$to_json());return"{"+result.join(",")+"}"},$Hash_to_json$12.$$arity=0)}($nesting[0],$nesting),function($NilClass_to_json$13,$parent_nesting){[$NilClass_to_json$13=$klass($NilClass_to_json$13,null,"NilClass")].concat($parent_nesting),Opal.def($NilClass_to_json$13,"$to_json",$NilClass_to_json$13=function(){return"null"},$NilClass_to_json$13.$$arity=0)}($nesting[0],$nesting),function($Numeric_to_json$14,$parent_nesting){[$Numeric_to_json$14=$klass($Numeric_to_json$14,null,"Numeric")].concat($parent_nesting),Opal.def($Numeric_to_json$14,"$to_json",$Numeric_to_json$14=function(){return this.toString()},$Numeric_to_json$14.$$arity=0)}($nesting[0],$nesting),function($String_to_json$15,$parent_nesting){[$String_to_json$15=$klass($String_to_json$15,null,"String")].concat($parent_nesting),Opal.def($String_to_json$15,"$to_json",$String_to_json$15=function(){return JSON.stringify(this)},$String_to_json$15.$$arity=0)}($nesting[0],$nesting),function($Time_to_json$16,$parent_nesting){[$Time_to_json$16=$klass($Time_to_json$16,null,"Time")].concat($parent_nesting),Opal.def($Time_to_json$16,"$to_json",$Time_to_json$16=function(){return this.$strftime("%FT%T%z").$to_json()},$Time_to_json$16.$$arity=0)}($nesting[0],$nesting),function($Date_as_json$18,$Date_to_json$17){$Date_as_json$18=$klass($Date_as_json$18,null,"Date"),[$Date_as_json$18].concat($Date_to_json$17);return Opal.def($Date_as_json$18,"$to_json",$Date_to_json$17=function(){return this.$to_s().$to_json()},$Date_to_json$17.$$arity=0),Opal.def($Date_as_json$18,"$as_json",$Date_as_json$18=function(){return this.$to_s()},$Date_as_json$18.$$arity=0),nil&&"as_json"}($nesting[0],$nesting)},Opal.modules["opal/source_map/map"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$truthy=Opal.truthy;return Opal.add_stubs(["$require","$map","$to_json","$to_h","$to_s","$delete","$encode64","$generated_code"]),self.$require("base64"),self.$require("json"),function($Map_marshal_load$8,$Map_marshal_dump$7){var $Map_marshal_load$8=$module($Map_marshal_load$8,"Map"),$nesting=[$Map_marshal_load$8].concat($Map_marshal_dump$7);return Opal.def($Map_marshal_load$8,"$to_h",$Map_marshal_dump$7=function(){var $ret_or_1;return null==this.to_h&&(this.to_h=nil),$truthy($ret_or_1=this.to_h)?$ret_or_1:this.$map()},$Map_marshal_dump$7.$$arity=0),Opal.def($Map_marshal_load$8,"$to_json",$Map_marshal_dump$7=function(){return this.$to_h().$to_json()},$Map_marshal_dump$7.$$arity=0),Opal.def($Map_marshal_load$8,"$as_json",$Map_marshal_dump$7=function($a){Opal.slice.call(arguments,0,arguments.length);return this.$to_h()},$Map_marshal_dump$7.$$arity=-1),Opal.def($Map_marshal_load$8,"$to_s",$Map_marshal_dump$7=function(){return this.$to_h().$to_s()},$Map_marshal_dump$7.$$arity=0),Opal.def($Map_marshal_load$8,"$to_data_uri_comment",$Map_marshal_dump$7=function(){return"//# sourceMappingURL=data:application/json;base64,"+$$($nesting,"Base64").$encode64(this.$to_json()).$delete("\n")},$Map_marshal_dump$7.$$arity=0),Opal.def($Map_marshal_load$8,"$cache",$Map_marshal_dump$7=function(){var self=this,$ret_or_2=nil;return 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Opal.add_stubs(["$include","$attr_reader","$new","$size","$[]=","$-","$join","$map","$to_proc","$file","$force_encoding","$source","$names","$encode_mappings","$relative_mappings","$absolute_mappings","$sort_by","$to_a","$line","$<","$column","$source_map_name","$[]","$to_s","$to_int","$each","$fragments_by_line","$<<","$segment_from_fragment","$+","$private","$flat_map","$fragments","$code","$split","$with_index","$zero?","$!","$last"]),function($File_fragments_by_line$15,$File_absolute_mappings$12){var $File_fragments_by_line$15=$klass($File_fragments_by_line$15,null,"File"),$nesting=[$File_fragments_by_line$15].concat($File_absolute_mappings$12);return $File_fragments_by_line$15.$$prototype.generated_code=$File_fragments_by_line$15.$$prototype.fragments=$File_fragments_by_line$15.$$prototype.names=$File_fragments_by_line$15.$$prototype.names_map=$File_fragments_by_line$15.$$prototype.relative_mappings=$File_fragments_by_line$15.$$prototype.absolute_mappings=nil,$File_fragments_by_line$15.$include($$$($$$($$($nesting,"Opal"),"SourceMap"),"Map")),$File_fragments_by_line$15.$attr_reader("fragments"),$File_fragments_by_line$15.$attr_reader("file"),$File_fragments_by_line$15.$attr_reader("source"),Opal.def($File_fragments_by_line$15,"$initialize",$File_absolute_mappings$12=function(fragments,file,source,generated_code){var $$2;return null==generated_code&&(generated_code=nil),this.fragments=fragments,this.file=file,this.source=source,this.names_map=$send($$($nesting,"Hash"),"new",[],(($$2=function(hash,name){var $writer;null==$$2.$$s||$$2.$$s;return 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null==(source_root=source_root.$$smap.source_root)&&(source_root=""),$hash2(["version","sourceRoot","sources","sourcesContent","names","mappings"],{version:3,sourceRoot:source_root,sources:[this.$file()],sourcesContent:[this.$source().$force_encoding("UTF-8")],names:this.$names(),mappings:$$$($$$($$($nesting,"Opal"),"SourceMap"),"VLQ").$encode_mappings(this.$relative_mappings())})},$File_absolute_mappings$12.$$arity=-1),Opal.def($File_fragments_by_line$15,"$names",$File_absolute_mappings$12=function(){var $$6,$$7,$ret_or_2,self=this;return self.names=$truthy($ret_or_2=self.names)?$ret_or_2:(self.$absolute_mappings(),$send($send(self.names_map.$to_a(),"sort_by",[],(($$6=function(_,index){null==$$6.$$s||$$6.$$s;return null==_&&(_=nil),null==index&&(index=nil),index}).$$s=self,$$6.$$arity=2,$$6)),"map",[],(($$7=function(name,_){null==$$7.$$s||$$7.$$s;return 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this.toString()}),0)}($nesting[0]),function($base,$super){var self=$klass($base,null,"String");$def(self,"$to_json",(function(){return JSON.stringify(this)}),0)}($nesting[0]),function($base,$super){var self=$klass($base,null,"Time");$def(self,"$to_json",(function(){return this.$strftime("%FT%T%z").$to_json()}),0)}($nesting[0]),function($base,$super){var self=$klass($base,null,"Date");return $def(self,"$to_json",(function(){return this.$to_s().$to_json()}),0),$def(self,"$as_json",(function(){return this.$to_s()}),0)}($nesting[0])},Opal.modules["opal/source_map/map"]=function(Opal){var self=Opal.top,$nesting=[],$$=Opal.$r($nesting),nil=Opal.nil,$$$=Opal.$$$,$module=Opal.module,$truthy=Opal.truthy,$def=Opal.def,$to_ary=Opal.to_ary;return Opal.add_stubs("require,map,to_json,to_h,to_s,delete,encode64,generated_code"),self.$require("base64"),self.$require("json"),function($base,$parent_nesting){var self=$module($base,"Map"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return $def(self,"$to_h",(function(){var $ret_or_1;return null==this.to_h&&(this.to_h=nil),$truthy($ret_or_1=this.to_h)?$ret_or_1:this.$map()}),0),$def(self,"$to_json",(function(){return this.$to_h().$to_json()}),0),$def(self,"$as_json",(function($a){var self=this;return Opal.slice.call(arguments),self.$to_h()}),-1),$def(self,"$to_s",(function(){return this.$to_h().$to_s()}),0),$def(self,"$to_data_uri_comment",(function(){return"//# sourceMappingURL=data:application/json;base64,"+$$("Base64").$encode64(this.$to_json()).$delete("\n")}),0),$def(self,"$cache",(function(){var $ret_or_1;return null==this.to_h&&(this.to_h=nil),this.to_h=$truthy($ret_or_1=this.to_h)?$ret_or_1:this.$map(),this}),0),$def(self,"$marshal_dump",(function(){return[this.$to_h(),this.$generated_code()]}),0),$def(self,"$marshal_load",(function(value){var $a,$b;return $a=$to_ary($b=value),this.to_h=null==$a[0]?nil:$a[0],this.generated_code=null==$a[1]?nil:$a[1],$b}),1)}($$$($$("Opal"),"SourceMap"),$nesting)},Opal.modules["opal/source_map/file"]=function(Opal){var $nesting=[],$$=Opal.$r($nesting),nil=Opal.nil,$$$=Opal.$$$,$klass=Opal.klass,$send=Opal.send,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$def=Opal.def,$truthy=Opal.truthy,$hash2=Opal.hash2,$rb_lt=Opal.rb_lt,$to_ary=Opal.to_ary,$rb_plus=Opal.rb_plus,$not=Opal.not;return Opal.add_stubs("include,attr_reader,new,size,[]=,-,join,map,to_proc,file,force_encoding,source,names,encode_mappings,relative_mappings,absolute_mappings,sort_by,to_a,line,<,column,source_map_name,[],to_s,to_int,each,fragments_by_line,skip_source_map?,is_a?,<<,segment_from_fragment,+,private,flat_map,fragments,code,split,with_index,!,zero?,last"),function($base,$super,$parent_nesting){var self=$klass($base,null,"File"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;return $proto.generated_code=$proto.fragments=$proto.names=$proto.names_map=$proto.relative_mappings=$proto.absolute_mappings=nil,self.$include($$$($$$($$("Opal"),"SourceMap"),"Map")),self.$attr_reader("fragments"),self.$attr_reader("file"),self.$attr_reader("source"),$def(self,"$initialize",(function(fragments,file,source,generated_code){return null==generated_code&&(generated_code=nil),this.fragments=fragments,this.file=file,this.source=source,this.names_map=$send($$("Hash"),"new",[],(function(hash,name){var $writer;return null==hash&&(hash=nil),null==name&&(name=nil),$writer=[name,hash.$size()],$send(hash,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]}),2),this.generated_code=generated_code,this.absolute_mappings=nil}),-4),$def(self,"$generated_code",(function(){var $ret_or_1;return this.generated_code=$truthy($ret_or_1=this.generated_code)?$ret_or_1:$send(this.fragments,"map",[],"code".$to_proc()).$join()}),0),$def(self,"$map",(function($kwargs){var source_root;if(null==$kwargs)$kwargs=$hash2([],{});else if(!$kwargs.$$is_hash)throw Opal.ArgumentError.$new("expected kwargs");return null==(source_root=$kwargs.$$smap.source_root)&&(source_root=""),$hash2(["version","sourceRoot","sources","sourcesContent","names","mappings"],{version:3,sourceRoot:source_root,sources:[this.$file()],sourcesContent:[this.$source().$force_encoding("UTF-8")],names:this.$names(),mappings:$$$($$$($$("Opal"),"SourceMap"),"VLQ").$encode_mappings(this.$relative_mappings())})}),-1),$def(self,"$names",(function(){var $ret_or_1;return this.names=$truthy($ret_or_1=this.names)?$ret_or_1:(this.$absolute_mappings(),$send($send(this.names_map.$to_a(),"sort_by",[],(function(_,index){return null==_&&(_=nil),null==index&&(index=nil),index}),2),"map",[],(function(name,_){return null==name&&(name=nil),null==_&&(_=nil),name}),2))}),0),$def(self,"$segment_from_fragment",(function(fragment,generated_column){var original_column,original_line=nil,$ret_or_1=nil,$writer=nil;return 0,original_line=$rb_minus($truthy($ret_or_1=fragment.$line())?$ret_or_1:0,1),$truthy($rb_lt(original_line,0))&&(original_line=0),original_column=$truthy($ret_or_1=fragment.$column())?$ret_or_1:0,$truthy(fragment.$source_map_name())?[generated_column,0,original_line,original_column,$truthy($ret_or_1=this.names_map["$[]"](fragment.$source_map_name().$to_s()))?$ret_or_1:($writer=[fragment.$source_map_name().$to_s(),this.names_map.$size()],$send(this.names_map,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)])]:[generated_column,0,original_line,original_column]}),2),$def(self,"$relative_mappings",(function(){var $ret_or_1,reference_segment=nil,reference_name_index=nil;return this.relative_mappings=$truthy($ret_or_1=this.relative_mappings)?$ret_or_1:(reference_segment=[0,0,0,0,0],reference_name_index=0,$send(this.$absolute_mappings(),"map",[],(function(absolute_mapping){var $writer=nil;return null==absolute_mapping&&(absolute_mapping=nil),$send(reference_segment,"[]=",$to_a($writer=[0,0])),$writer[$rb_minus($writer.length,1)],$send(absolute_mapping,"map",[],(function(absolute_segment){var segment,$ret_or_2=nil;return null==absolute_segment&&(absolute_segment=nil),segment=[],$writer=[0,$rb_minus(absolute_segment["$[]"](0),reference_segment["$[]"](0))],$send(segment,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],$writer=[1,$rb_minus(absolute_segment["$[]"](1),$truthy($ret_or_2=reference_segment["$[]"](1))?$ret_or_2:0)],$send(segment,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],$writer=[2,$rb_minus(absolute_segment["$[]"](2),$truthy($ret_or_2=reference_segment["$[]"](2))?$ret_or_2:0)],$send(segment,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],$writer=[3,$rb_minus(absolute_segment["$[]"](3),$truthy($ret_or_2=reference_segment["$[]"](3))?$ret_or_2:0)],$send(segment,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],$truthy(absolute_segment["$[]"](4))&&($writer=[4,$rb_minus(absolute_segment["$[]"](4).$to_int(),($truthy($ret_or_2=reference_segment["$[]"](4))?$ret_or_2:reference_name_index).$to_int())],$send(segment,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],reference_name_index=absolute_segment["$[]"](4)),reference_segment=absolute_segment,segment}),1)}),1))}),0),$def(self,"$absolute_mappings",(function(){var $ret_or_1,mappings=nil;return this.absolute_mappings=$truthy($ret_or_1=this.absolute_mappings)?$ret_or_1:(mappings=[],$send(this.$fragments_by_line(),"each",[],(function $$6(raw_segments){var generated_column=nil,segments=nil;return null==raw_segments&&(raw_segments=nil),generated_column=0,segments=[],$send(raw_segments,"each",[],(function $$7($mlhs_tmp1){var $a,self=null==$$7.$$s?this:$$7.$$s,generated_code=nil,fragment=nil;return null==$mlhs_tmp1&&($mlhs_tmp1=nil),generated_code=null==($a=$to_ary($mlhs_tmp1))[0]?nil:$a[0],fragment=null==$a[1]?nil:$a[1],$truthy(fragment["$is_a?"]($$$($$("Opal"),"Fragment")))&&$truthy(fragment["$skip_source_map?"]())||segments["$<<"](self.$segment_from_fragment(fragment,generated_column)),generated_column=$rb_plus(generated_column,generated_code.$size())}),{$$arity:1,$$s:null==$$6.$$s?this:$$6.$$s,$$has_top_level_mlhs_arg:!0}),mappings["$<<"](segments)}),{$$arity:1,$$s:this}),mappings)}),0),self.$private(),$def(self,"$fragments_by_line",(function(){var raw_mappings=nil;return raw_mappings=[[]],$send(this.$fragments(),"flat_map",[],(function(fragment){var fragment_lines=nil;return null==fragment&&(fragment=nil),fragment_lines=fragment.$code().$split("\n",-1),$send(fragment_lines.$each(),"with_index",[],(function(fragment_line,index){var raw_segment;return null==fragment_line&&(fragment_line=nil),null==index&&(index=nil),raw_segment=[fragment_line,fragment],$truthy(index["$zero?"]())&&$not(fragment_line.$size()["$zero?"]())?raw_mappings.$last()["$<<"](raw_segment):$truthy(index["$zero?"]())&&$truthy(fragment_line.$size()["$zero?"]())?nil:$truthy(fragment_line.$size()["$zero?"]())?raw_mappings["$<<"]([]):raw_mappings["$<<"]([raw_segment])}),2)}),1),raw_mappings}),0)}($$$($$("Opal"),"SourceMap"),0,$nesting)},Opal.modules["opal/source_map/index"]=function(Opal){var $nesting=[],$$=Opal.$r($nesting),nil=Opal.nil,$$$=Opal.$$$,$klass=Opal.klass,$hash2=Opal.hash2,$def=Opal.def,$send=Opal.send,$truthy=Opal.truthy,$rb_plus=Opal.rb_plus;return Opal.add_stubs("include,attr_reader,map,to_h,generated_code,+,count,[],rindex,size"),function($base,$super,$parent_nesting){var self=$klass($base,null,"Index"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return self.$$prototype.source_maps=nil,self.$include($$$($$$($$("Opal"),"SourceMap"),"Map")),self.$attr_reader("source_maps"),$def(self,"$initialize",(function(source_maps,$kwargs){var join;if(null==$kwargs)$kwargs=$hash2([],{});else if(!$kwargs.$$is_hash)throw Opal.ArgumentError.$new("expected kwargs");return null==(join=$kwargs.$$smap.join)&&(join=nil),this.source_maps=source_maps,this.join=join}),-2),$def(self,"$map",(function(){var offset_line=nil,offset_column=nil;return offset_line=0,offset_column=0,$hash2(["version","sections"],{version:3,sections:$send(this.source_maps,"map",[],(function $$1(source_map){var map,new_lines_count,self=null==$$1.$$s?this:$$1.$$s,generated_code=nil,last_line=nil;return null==self.join&&(self.join=nil),null==source_map&&(source_map=nil),map=$hash2(["offset","map"],{offset:$hash2(["line","column"],{line:offset_line,column:offset_column}),map:source_map.$to_h()}),generated_code=source_map.$generated_code(),$truthy(self.join)&&(generated_code=$rb_plus(generated_code,self.join)),new_lines_count=generated_code.$count("\n"),last_line=generated_code["$[]"](Opal.Range.$new($rb_plus(generated_code.$rindex("\n"),1),-1,!1)),offset_line=$rb_plus(offset_line,new_lines_count),offset_column=$rb_plus(offset_column,last_line.$size()),map}),{$$arity:1,$$s:this})})}),0)}($$$($$("Opal"),"SourceMap"),0,$nesting)},Opal.modules["opal/source_map/vlq"]=function(Opal){var $nesting=[],$$=Opal.$r($nesting),nil=Opal.nil,$$$=Opal.$$$,$module=Opal.module,$const_set=Opal.const_set,$rb_minus=Opal.rb_minus,$send=Opal.send,$range=Opal.range,$hash2=Opal.hash2,$to_a=Opal.to_a,$truthy=Opal.truthy,$rb_lt=Opal.rb_lt,$rb_plus=Opal.rb_plus,$rb_gt=Opal.rb_gt,$defs=Opal.defs,$eqeq=Opal.eqeq;return Opal.add_stubs("<<,-,split,inject,[],[]=,each,<,+,-@,loop,&,>>,>,|,join,any?,shift,raise,==,map,encode,each_with_index,decode"),function($base,$parent_nesting){var self=$module($base,"VLQ"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return $const_set($nesting[0],"VLQ_BASE_SHIFT",5),$const_set($nesting[0],"VLQ_BASE",1["$<<"]($$("VLQ_BASE_SHIFT"))),$const_set($nesting[0],"VLQ_BASE_MASK",$rb_minus($$("VLQ_BASE"),1)),$const_set($nesting[0],"VLQ_CONTINUATION_BIT",$$("VLQ_BASE")),$const_set($nesting[0],"BASE64_DIGITS","ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/".$split("")),$const_set($nesting[0],"BASE64_VALUES",$send($range(0,64,!0),"inject",[$hash2([],{})],(function(h,i){var $writer;return null==h&&(h=nil),null==i&&(i=nil),$writer=[$$("BASE64_DIGITS")["$[]"](i),i],$send(h,"[]=",$to_a($writer)),$rb_minus($writer.length,1),h}),2)),$defs(self,"$encode",(function(ary){var self=this,result=nil;return result=[],function(){var $brk=Opal.new_brk();try{$send(ary,"each",[],(function $$2(n){var self=null==$$2.$$s?this:$$2.$$s,vlq=nil;return null==n&&(n=nil),vlq=$truthy($rb_lt(n,0))?$rb_plus(n["$-@"]()["$<<"](1),1):n["$<<"](1),function(){var $brk=Opal.new_brk();try{return $send(self,"loop",[],(function(){var digit=nil;if(digit=vlq["$&"]($$("VLQ_BASE_MASK")),vlq=vlq["$>>"]($$("VLQ_BASE_SHIFT")),$truthy($rb_gt(vlq,0))&&(digit=digit["$|"]($$("VLQ_CONTINUATION_BIT"))),result["$<<"]($$("BASE64_DIGITS")["$[]"](digit)),$truthy($rb_gt(vlq,0)))return nil;Opal.brk(nil,$brk)}),{$$arity:0,$$brk:$brk})}catch(err){if(err===$brk)return err.$v;throw err}}()}),{$$arity:1,$$s:self,$$brk:$brk})}catch(err){if(err===$brk)return err.$v;throw err}}(),result.$join()}),1),$defs(self,"$decode",(function(str){var result=nil,chars=nil,vlq=nil,shift=nil,continuation=nil,char$=nil,digit=nil;for(result=[],chars=str.$split("");$truthy(chars["$any?"]());){for(vlq=0,shift=0,continuation=!0;$truthy(continuation);)char$=chars.$shift(),$truthy(char$)||this.$raise($$("ArgumentError")),digit=$$("BASE64_VALUES")["$[]"](char$),$eqeq(digit["$&"]($$("VLQ_CONTINUATION_BIT")),0)&&(continuation=!1),digit=digit["$&"]($$("VLQ_BASE_MASK")),vlq=$rb_plus(vlq,digit["$<<"](shift)),shift=$rb_plus(shift,$$("VLQ_BASE_SHIFT"));result["$<<"]($eqeq(vlq["$&"](1),1)?vlq["$>>"](1)["$-@"]():vlq["$>>"](1))}return result}),1),$defs(self,"$encode_mappings",(function(ary){return $send(ary,"map",[],(function $$4(group){return null==group&&(group=nil),$send(group,"map",[],(function $$5(segment){return null==segment&&(segment=nil),(null==$$5.$$s?this:$$5.$$s).$encode(segment)}),{$$arity:1,$$s:null==$$4.$$s?this:$$4.$$s}).$join(",")}),{$$arity:1,$$s:this}).$join(";")}),1),$defs(self,"$decode_mappings",(function(str){var mappings=nil;return mappings=[],$send(str.$split(";"),"each_with_index",[],(function $$6(group,index){var $writer,self=null==$$6.$$s?this:$$6.$$s;return null==group&&(group=nil),null==index&&(index=nil),$send(mappings,"[]=",$to_a($writer=[index,[]])),$rb_minus($writer.length,1),$send(group.$split(","),"each",[],(function $$7(segment){var self=null==$$7.$$s?this:$$7.$$s;return null==segment&&(segment=nil),mappings["$[]"](index)["$<<"](self.$decode(segment))}),{$$arity:1,$$s:self})}),{$$arity:2,$$s:this}),mappings}),1)}($$$($$("Opal"),"SourceMap"),$nesting)},Opal.modules["opal/source_map"]=function(Opal){var $base,$parent_nesting,$nesting=[],$module=(Opal.nil,Opal.module);return Opal.add_stubs("autoload"),$base=$nesting[0],$parent_nesting=$nesting,function($base){var self=$module($base,"SourceMap");return self.$autoload("Map","opal/source_map/map"),self.$autoload("File","opal/source_map/file"),self.$autoload("Index","opal/source_map/index"),self.$autoload("VLQ","opal/source_map/vlq")}([$module($base,"Opal")].concat($parent_nesting)[0])},Opal.modules["opal-source-maps"]=function(Opal){var self=Opal.top;Opal.nil;return Opal.add_stubs("require"),self.$require("opal/source_map")};
diff --git a/opal/master/opal-source-maps.min.js.gz b/opal/master/opal-source-maps.min.js.gz
index 2345611c..459476bf 100644
Binary files a/opal/master/opal-source-maps.min.js.gz and b/opal/master/opal-source-maps.min.js.gz differ
diff --git a/opal/master/opal.js b/opal/master/opal.js
index bee3d155..78db4cd4 100644
--- a/opal/master/opal.js
+++ b/opal/master/opal.js
@@ -54,6 +54,12 @@
   // The actual Class class
   var Class;
 
+  // The Opal.Opal class (helpers etc.)
+  var _Opal;
+
+  // The Kernel module
+  var Kernel;
+
   // The Opal object that is exposed globally
   var Opal = global_object.Opal = {};
 
@@ -65,6 +71,7 @@
   Opal.config = {
     missing_require_severity: 'error',        // error, warning, ignore
     unsupported_features_severity: 'warning', // error, warning, ignore
+    experimental_features_severity: 'warning',// warning, ignore
     enable_stack_trace: true                  // true, false
   };
 
@@ -94,7 +101,7 @@
     if (obj.$$id != null) {
       return obj.$$id;
     }
-    $defineProperty(obj, '$$id', Opal.uid());
+    $prop(obj, '$$id', Opal.uid());
     return obj.$$id;
   };
 
@@ -121,23 +128,7 @@
     }
   };
 
-  // Inspect any kind of object, including non Ruby ones
-  Opal.inspect = function(obj) {
-    if (obj === undefined) {
-      return "undefined";
-    }
-    else if (obj === null) {
-      return "null";
-    }
-    else if (!obj.$$class) {
-      return obj.toString();
-    }
-    else {
-      return obj.$inspect();
-    }
-  };
-
-  function $defineProperty(object, name, initialValue) {
+  function $prop(object, name, initialValue) {
     if (typeof(object) === "string") {
       // Special case for:
       //   s = "string"
@@ -157,7 +148,10 @@
     }
   }
 
-  Opal.defineProperty = $defineProperty;
+  Opal.prop = $prop;
+
+  // @deprecated
+  Opal.defineProperty = Opal.prop;
 
   Opal.slice = $slice;
 
@@ -165,12 +159,12 @@
   // Helpers
   // -----
 
-  Opal.truthy = function(val) {
-    return (val !== nil && val != null && (!val.$$is_boolean || val == true));
+  var $truthy = Opal.truthy = function(val) {
+    return false !== val && nil !== val && undefined !== val && null !== val && (!(val instanceof Boolean) || true === val.valueOf());
   };
 
   Opal.falsy = function(val) {
-    return (val === nil || val == null || (val.$$is_boolean && val == false))
+    return !$truthy(val);
   };
 
   Opal.type_error = function(object, type, method, coerced) {
@@ -190,7 +184,22 @@
   };
 
   Opal.coerce_to = function(object, type, method, args) {
-    if (type['$==='](object)) return object;
+    var body;
+
+    if (method === 'to_int' && type === Opal.Integer && object.$$is_number)
+      return object < 0 ? Math.ceil(object) : Math.floor(object);
+
+    if (method === 'to_str' && type === Opal.String && object.$$is_string)
+      return object;
+
+    if (Opal.is_a(object, type)) return object;
+
+    // Fast path for the most common situation
+    if (object['$respond_to?'].$$pristine && object.$method_missing.$$pristine) {
+      body = object['$' + method];
+      if (body == null || body.$$stub) throw Opal.type_error(object, type);
+      return body.apply(object, args);
+    }
 
     if (!object['$respond_to?'](method)) {
       throw Opal.type_error(object, type);
@@ -206,9 +215,10 @@
     var body = obj[jsid];
 
     if (obj['$respond_to?'].$$pristine) {
-      if (obj['$respond_to_missing?'].$$pristine) {
-        return typeof(body) === "function" && !body.$$stub;
-      } else {
+      if (typeof(body) === "function" && !body.$$stub) {
+        return true;
+      }
+      if (!obj['$respond_to_missing?'].$$pristine) {
         return Opal.send(obj, obj['$respond_to_missing?'], [jsid.substr(1), include_all]);
       }
     } else {
@@ -233,6 +243,25 @@
     }
   }
 
+  function handle_autoload(cref, name) {
+    if (!cref.$$autoload[name].loaded) {
+      cref.$$autoload[name].loaded = true;
+      try {
+        Opal.Kernel.$require(cref.$$autoload[name].path);
+      } catch (e) {
+        cref.$$autoload[name].exception = e;
+        throw e;
+      }
+      cref.$$autoload[name].required = true;
+      if (cref.$$const[name] != null) {
+        cref.$$autoload[name].success = true;
+        return cref.$$const[name];
+      }
+    } else if (cref.$$autoload[name].loaded && !cref.$$autoload[name].required) {
+      if (cref.$$autoload[name].exception) { throw cref.$$autoload[name].exception; }
+    }
+  }
+
   // Constants
   // ---------
   //
@@ -247,7 +276,12 @@
 
   // Get the constant in the scope of the current cref
   function const_get_name(cref, name) {
-    if (cref) return cref.$$const[name];
+    if (cref) {
+      if (cref.$$const[name] != null) { return cref.$$const[name]; }
+      if (cref.$$autoload && cref.$$autoload[name]) {
+        return handle_autoload(cref, name);
+      }
+    }
   }
 
   // Walk up the nesting array looking for the constant
@@ -260,7 +294,11 @@
     // and in order. The ancestors of those elements are ignored.
     for (i = 0, ii = nesting.length; i < ii; i++) {
       constant = nesting[i].$$const[name];
-      if (constant != null) return constant;
+      if (constant != null) {
+        return constant;
+      } else if (nesting[i].$$autoload && nesting[i].$$autoload[name]) {
+        return handle_autoload(nesting[i], name);
+      }
     }
   }
 
@@ -275,6 +313,8 @@
     for (i = 0, ii = ancestors.length; i < ii; i++) {
       if (ancestors[i].$$const && $has_own.call(ancestors[i].$$const, name)) {
         return ancestors[i].$$const[name];
+      } else if (ancestors[i].$$autoload && ancestors[i].$$autoload[name]) {
+        return handle_autoload(ancestors[i], name);
       }
     }
   }
@@ -315,6 +355,14 @@
   Opal.const_get_qualified = function(cref, name, skip_missing) {
     var result, cache, cached, current_version = Opal.const_cache_version;
 
+    if (name == null) {
+      // A shortpath for calls like ::String => $$$("String")
+      result = const_get_name(_Object, cref);
+
+      if (result != null) return result;
+      return Opal.const_get_qualified(_Object, cref, skip_missing);
+    }
+
     if (cref == null) return;
 
     if (cref === '::') cref = _Object;
@@ -324,7 +372,7 @@
     }
 
     if ((cache = cref.$$const_cache) == null) {
-      $defineProperty(cref, '$$const_cache', Object.create(null));
+      $prop(cref, '$$const_cache', Object.create(null));
       cache = cref.$$const_cache;
     }
     cached = cache[name];
@@ -349,7 +397,7 @@
     var cref = nesting[0], result, current_version = Opal.const_cache_version, cache, cached;
 
     if ((cache = nesting.$$const_cache) == null) {
-      $defineProperty(nesting, '$$const_cache', Object.create(null));
+      $prop(nesting, '$$const_cache', Object.create(null));
       cache = nesting.$$const_cache;
     }
     cached = cache[name];
@@ -370,7 +418,7 @@
 
   // Register the constant on a cref and opportunistically set the name of
   // unnamed classes/modules.
-  Opal.const_set = function(cref, name, value) {
+  function $const_set(cref, name, value) {
     if (cref == null || cref === '::') cref = _Object;
 
     if (value.$$is_a_module) {
@@ -392,11 +440,13 @@
     if (cref === _Object) Opal[name] = value;
 
     // Name new class directly onto current scope (Opal.Foo.Baz = klass)
-    $defineProperty(cref, name, value);
+    $prop(cref, name, value);
 
     return value;
   };
 
+  Opal.const_set = $const_set;
+
   // Get all the constants reachable from a given cref, by default will include
   // inherited constants.
   Opal.constants = function(cref, inherit) {
@@ -416,6 +466,11 @@
       for (constant in module.$$const) {
         constants[constant] = true;
       }
+      if (module.$$autoload) {
+        for (constant in module.$$autoload) {
+          constants[constant] = true;
+        }
+      }
     }
 
     return Object.keys(constants);
@@ -431,7 +486,7 @@
       return old;
     }
 
-    if (cref.$$autoload != null && cref.$$autoload[name] != null) {
+    if (cref.$$autoload && cref.$$autoload[name]) {
       delete cref.$$autoload[name];
       return nil;
     }
@@ -439,10 +494,17 @@
     throw Opal.NameError.$new("constant "+cref+"::"+cref.$name()+" not defined");
   };
 
+  // Generates a function that is a curried const_get_relative.
+  Opal.const_get_relative_factory = function(nesting) {
+    return function(name, skip_missing) {
+      return Opal.$$(nesting, name, skip_missing);
+    }
+  }
+
   // Setup some shortcuts to reduce compiled size
   Opal.$$ = Opal.const_get_relative;
   Opal.$$$ = Opal.const_get_qualified;
-
+  Opal.$r = Opal.const_get_relative_factory;
 
   // Modules & Classes
   // -----------------
@@ -466,13 +528,13 @@
   // use that as the scope instead.
   //
   // @param scope        [Object] where the class is being created
-  // @param superclass  [Class,null] superclass of the new class (may be null)
-  // @param id          [String] the name of the class to be created
-  // @param constructor [JS.Function] function to use as constructor
+  // @param superclass   [Class,null] superclass of the new class (may be null)
+  // @param singleton    [Boolean,null] a true value denotes we want to allocate
+  //                                    a singleton
   //
   // @return new [Class]  or existing ruby class
   //
-  Opal.allocate_class = function(name, superclass) {
+  Opal.allocate_class = function(name, superclass, singleton) {
     var klass, constructor;
 
     if (superclass != null && superclass.$$bridge) {
@@ -490,26 +552,27 @@
       constructor = function(){};
     }
 
-    if (name) {
-      $defineProperty(constructor, 'displayName', '::'+name);
+    if (name && name !== nil) {
+      $prop(constructor, 'displayName', '::'+name);
     }
 
     klass = constructor;
 
-    $defineProperty(klass, '$$name', name);
-    $defineProperty(klass, '$$constructor', constructor);
-    $defineProperty(klass, '$$prototype', constructor.prototype);
-    $defineProperty(klass, '$$const', {});
-    $defineProperty(klass, '$$is_class', true);
-    $defineProperty(klass, '$$is_a_module', true);
-    $defineProperty(klass, '$$super', superclass);
-    $defineProperty(klass, '$$cvars', {});
-    $defineProperty(klass, '$$own_included_modules', []);
-    $defineProperty(klass, '$$own_prepended_modules', []);
-    $defineProperty(klass, '$$ancestors', []);
-    $defineProperty(klass, '$$ancestors_cache_version', null);
-
-    $defineProperty(klass.$$prototype, '$$class', klass);
+    $prop(klass, '$$name', name);
+    $prop(klass, '$$constructor', constructor);
+    $prop(klass, '$$prototype', constructor.prototype);
+    $prop(klass, '$$const', {});
+    $prop(klass, '$$is_class', true);
+    $prop(klass, '$$is_a_module', true);
+    $prop(klass, '$$super', superclass);
+    $prop(klass, '$$cvars', {});
+    $prop(klass, '$$own_included_modules', []);
+    $prop(klass, '$$own_prepended_modules', []);
+    $prop(klass, '$$ancestors', []);
+    $prop(klass, '$$ancestors_cache_version', null);
+    $prop(klass, '$$subclasses', []);
+
+    $prop(klass.$$prototype, '$$class', klass);
 
     // By default if there are no singleton class methods
     // __proto__ is Class.prototype
@@ -522,6 +585,27 @@
     if (superclass != null) {
       $set_proto(klass.$$prototype, superclass.$$prototype);
 
+      if (singleton !== true) {
+        // Let's not forbid GC from cleaning up our
+        // subclasses.
+        if (typeof WeakRef !== 'undefined') {
+          // First, let's clean up our array from empty objects.
+          var i, subclass, rebuilt_subclasses = [];
+          for (i = 0; i < superclass.$$subclasses.length; i++) {
+            subclass = superclass.$$subclasses[i];
+            if (subclass.deref() !== undefined) {
+              rebuilt_subclasses.push(subclass);
+            }
+          }
+          // Now, let's add our class.
+          rebuilt_subclasses.push(new WeakRef(klass));
+          superclass.$$subclasses = rebuilt_subclasses;
+        }
+        else {
+          superclass.$$subclasses.push(klass);
+        }
+      }
+
       if (superclass.$$meta) {
         // If superclass has metaclass then we have explicitely inherit it.
         Opal.build_class_singleton_class(klass);
@@ -603,7 +687,7 @@
 
     // Create the class object (instance of Class)
     klass = Opal.allocate_class(name, superclass);
-    Opal.const_set(scope, name, klass);
+    $const_set(scope, name, klass);
 
     // Call .inherited() hook with new class on the superclass
     if (superclass.$inherited) {
@@ -641,25 +725,25 @@
   Opal.allocate_module = function(name) {
     var constructor = function(){};
     if (name) {
-      $defineProperty(constructor, 'displayName', name+'.$$constructor');
+      $prop(constructor, 'displayName', name+'.$$constructor');
     }
 
     var module = constructor;
 
     if (name)
-      $defineProperty(constructor, 'displayName', name+'.constructor');
-
-    $defineProperty(module, '$$name', name);
-    $defineProperty(module, '$$prototype', constructor.prototype);
-    $defineProperty(module, '$$const', {});
-    $defineProperty(module, '$$is_module', true);
-    $defineProperty(module, '$$is_a_module', true);
-    $defineProperty(module, '$$cvars', {});
-    $defineProperty(module, '$$iclasses', []);
-    $defineProperty(module, '$$own_included_modules', []);
-    $defineProperty(module, '$$own_prepended_modules', []);
-    $defineProperty(module, '$$ancestors', [module]);
-    $defineProperty(module, '$$ancestors_cache_version', null);
+      $prop(constructor, 'displayName', name+'.constructor');
+
+    $prop(module, '$$name', name);
+    $prop(module, '$$prototype', constructor.prototype);
+    $prop(module, '$$const', {});
+    $prop(module, '$$is_module', true);
+    $prop(module, '$$is_a_module', true);
+    $prop(module, '$$cvars', {});
+    $prop(module, '$$iclasses', []);
+    $prop(module, '$$own_included_modules', []);
+    $prop(module, '$$own_prepended_modules', []);
+    $prop(module, '$$ancestors', [module]);
+    $prop(module, '$$ancestors_cache_version', null);
 
     $set_proto(module, Opal.Module.prototype);
 
@@ -701,7 +785,7 @@
 
     // Module doesnt exist, create a new one...
     module = Opal.allocate_module(name);
-    Opal.const_set(scope, name, module);
+    $const_set(scope, name, module);
 
     if (Opal.trace_class) { invoke_tracers_for_class(module); }
 
@@ -754,14 +838,14 @@
     // fallback on `Class`.
     superclass = klass === BasicObject ? Class : Opal.get_singleton_class(klass.$$super);
 
-    meta = Opal.allocate_class(null, superclass, function(){});
+    meta = Opal.allocate_class(null, superclass, true);
 
-    $defineProperty(meta, '$$is_singleton', true);
-    $defineProperty(meta, '$$singleton_of', klass);
-    $defineProperty(klass, '$$meta', meta);
+    $prop(meta, '$$is_singleton', true);
+    $prop(meta, '$$singleton_of', klass);
+    $prop(klass, '$$meta', meta);
     $set_proto(klass, meta.$$prototype);
     // Restoring ClassName.class
-    $defineProperty(klass, '$$class', Opal.Class);
+    $prop(klass, '$$class', Opal.Class);
 
     return meta;
   };
@@ -771,14 +855,14 @@
       return mod.$$meta;
     }
 
-    var meta = Opal.allocate_class(null, Opal.Module, function(){});
+    var meta = Opal.allocate_class(null, Opal.Module, true);
 
-    $defineProperty(meta, '$$is_singleton', true);
-    $defineProperty(meta, '$$singleton_of', mod);
-    $defineProperty(mod, '$$meta', meta);
+    $prop(meta, '$$is_singleton', true);
+    $prop(meta, '$$singleton_of', mod);
+    $prop(mod, '$$meta', meta);
     $set_proto(mod, meta.$$prototype);
     // Restoring ModuleName.class
-    $defineProperty(mod, '$$class', Opal.Module);
+    $prop(mod, '$$class', Opal.Module);
 
     return meta;
   };
@@ -789,14 +873,14 @@
   // @return [Class]
   Opal.build_object_singleton_class = function(object) {
     var superclass = object.$$class,
-        klass = Opal.allocate_class(nil, superclass, function(){});
+        klass = Opal.allocate_class(nil, superclass, true);
 
-    $defineProperty(klass, '$$is_singleton', true);
-    $defineProperty(klass, '$$singleton_of', object);
+    $prop(klass, '$$is_singleton', true);
+    $prop(klass, '$$singleton_of', object);
 
     delete klass.$$prototype.$$class;
 
-    $defineProperty(object, '$$meta', klass);
+    $prop(object, '$$meta', klass);
 
     $set_proto(object, object.$$meta.$$prototype);
 
@@ -868,11 +952,16 @@
   };
 
   Opal.methods = function(obj) {
-    return Opal.instance_methods(Opal.get_singleton_class(obj));
+    return Opal.instance_methods(obj.$$meta || obj.$$class);
   };
 
   Opal.own_methods = function(obj) {
-    return Opal.own_instance_methods(Opal.get_singleton_class(obj));
+    if (obj.$$meta) {
+      return Opal.own_instance_methods(obj.$$meta);
+    }
+    else {
+      return [];
+    }
   };
 
   Opal.receiver_methods = function(obj) {
@@ -1025,7 +1114,7 @@
 
     for (var i = 0, length = module_ancestors.length; i < length; i++) {
       var ancestor = module_ancestors[i], iclass = create_iclass(ancestor);
-      $defineProperty(iclass, '$$included', true);
+      $prop(iclass, '$$included', true);
       iclasses.push(iclass);
     }
     var includer_ancestors = Opal.ancestors(includer),
@@ -1130,7 +1219,7 @@
 
     for (var i = 0, length = module_ancestors.length; i < length; i++) {
       var ancestor = module_ancestors[i], iclass = create_iclass(ancestor);
-      $defineProperty(iclass, '$$prepended', true);
+      $prop(iclass, '$$prepended', true);
       iclasses.push(iclass);
     }
 
@@ -1149,8 +1238,8 @@
       // Making the module "dummy"
       prepender_iclass = create_dummy_iclass(prepender);
       flush_methods_in(prepender);
-      $defineProperty(dummy_prepender, '$$dummy', true);
-      $defineProperty(dummy_prepender, '$$define_methods_on', prepender_iclass);
+      $prop(dummy_prepender, '$$dummy', true);
+      $prop(dummy_prepender, '$$define_methods_on', prepender_iclass);
 
       // Converting
       //   dummy(prepender) -> previous_parent
@@ -1229,11 +1318,11 @@
 
     for (i = 0; i < length; i++) {
       var prop = props[i];
-      $defineProperty(iclass, prop, proto[prop]);
+      $prop(iclass, prop, proto[prop]);
     }
 
-    $defineProperty(iclass, '$$iclass', true);
-    $defineProperty(iclass, '$$module', module);
+    $prop(iclass, '$$iclass', true);
+    $prop(iclass, '$$module', module);
 
     return iclass;
   }
@@ -1241,7 +1330,7 @@
   function chain_iclasses(iclasses) {
     var length = iclasses.length, first = iclasses[0];
 
-    $defineProperty(first, '$$root', true);
+    $prop(first, '$$root', true);
 
     if (length === 1) {
       return { first: first, last: first };
@@ -1296,13 +1385,13 @@
     //         - super (window.Object)
     //           - null
     //
-    $defineProperty(native_klass, '$$bridge', klass);
+    $prop(native_klass, '$$bridge', klass);
     $set_proto(native_klass.prototype, (klass.$$super || Opal.Object).$$prototype);
-    $defineProperty(klass, '$$prototype', native_klass.prototype);
+    $prop(klass, '$$prototype', native_klass.prototype);
 
-    $defineProperty(klass.$$prototype, '$$class', klass);
-    $defineProperty(klass, '$$constructor', native_klass);
-    $defineProperty(klass, '$$bridge', true);
+    $prop(klass.$$prototype, '$$class', klass);
+    $prop(klass, '$$constructor', native_klass);
+    $prop(klass, '$$bridge', true);
   };
 
   function protoToModule(proto) {
@@ -1381,7 +1470,7 @@
   // Note: all ruby methods have a `$` prefix in javascript, so all stubs will
   // have this prefix as well (to make this method more performant).
   //
-  //    Opal.add_stubs(["$foo", "$bar", "$baz="]);
+  //    Opal.add_stubs("foo,bar,baz=");
   //
   // All stub functions will have a private `$$stub` property set to true so
   // that other internal methods can detect if a method is just a stub or not.
@@ -1391,9 +1480,11 @@
   // @return [undefined]
   Opal.add_stubs = function(stubs) {
     var proto = Opal.BasicObject.$$prototype;
+    var stub, existing_method;
+    stubs = stubs.split(',');
 
     for (var i = 0, length = stubs.length; i < length; i++) {
-      var stub = stubs[i], existing_method = proto[stub];
+      stub = '$'+stubs[i], existing_method = proto[stub];
 
       if (existing_method == null || existing_method.$$stub) {
         Opal.add_stub_for(proto, stub);
@@ -1408,8 +1499,8 @@
   // @param stub [String] stub name to add (e.g. "$foo")
   // @return [undefined]
   Opal.add_stub_for = function(prototype, stub) {
-    var method_missing_stub = Opal.stub_for(stub);
-    $defineProperty(prototype, stub, method_missing_stub);
+    // Opal.stub_for(stub) is the method_missing_stub
+    $prop(prototype, stub, Opal.stub_for(stub));
   };
 
   // Generate the method_missing stub for a given method name.
@@ -1423,7 +1514,7 @@
       this.$method_missing.$$p = method_missing_stub.$$p;
 
       // Set block property to null ready for the next call (stop false-positives)
-      method_missing_stub.$$p = null;
+      delete method_missing_stub.$$p;
 
       // call method missing with correct args (remove '$' prefix on method name)
       var args_ary = new Array(arguments.length);
@@ -1458,7 +1549,7 @@
     }
     inspect += meth;
 
-    throw Opal.ArgumentError.$new('[' + inspect + '] wrong number of arguments(' + actual + ' for ' + expected + ')');
+    throw Opal.ArgumentError.$new('[' + inspect + '] wrong number of arguments (given ' + actual + ', expected ' + expected + ')');
   };
 
   // Arity count error dispatcher for blocks
@@ -1470,7 +1561,7 @@
   Opal.block_ac = function(actual, expected, context) {
     var inspect = "`block in " + context + "'";
 
-    throw Opal.ArgumentError.$new(inspect + ': wrong number of arguments (' + actual + ' for ' + expected + ')');
+    throw Opal.ArgumentError.$new(inspect + ': wrong number of arguments (given ' + actual + ', expected ' + expected + ')');
   };
 
   // Super dispatcher
@@ -1523,7 +1614,7 @@
       call_jsid = current_func.$$jsid;
     }
 
-    return Opal.find_super_dispatcher(obj, call_jsid, current_func, defcheck);
+    return Opal.find_super(obj, call_jsid, current_func, defcheck);
   };
 
   // @deprecated
@@ -1632,15 +1723,9 @@
       return (klass.$$is_integer_class) ? (object % 1) === 0 : true;
     }
 
-    var i, length, ancestors = Opal.ancestors(object.$$is_class ? Opal.get_singleton_class(object) : (object.$$meta || object.$$class));
-
-    for (i = 0, length = ancestors.length; i < length; i++) {
-      if (ancestors[i] === klass) {
-        return true;
-      }
-    }
+    var ancestors = Opal.ancestors(object.$$is_class ? Opal.get_singleton_class(object) : (object.$$meta || object.$$class));
 
-    return false;
+    return ancestors.indexOf(klass) !== -1;
   };
 
   // Helpers for extracting kwsplats
@@ -1726,7 +1811,7 @@
   Opal.extract_kwargs = function(parameters) {
     var kwargs = parameters[parameters.length - 1];
     if (kwargs != null && Opal.respond_to(kwargs, '$to_hash', true)) {
-      $splice.call(parameters, parameters.length - 1, 1);
+      $splice.call(parameters, parameters.length - 1);
       return kwargs.$to_hash();
     }
     else {
@@ -1761,6 +1846,15 @@
     return Opal.hash2(keys, map);
   };
 
+  function apply_blockopts(block, blockopts) {
+    if (typeof(blockopts) === 'number') {
+      block.$$arity = blockopts;
+    }
+    else if (typeof(blockopts) === 'object') {
+      Object.assign(block, blockopts);
+    }
+  }
+
   // Calls passed method on a ruby object with arguments and block:
   //
   // Can take a method or a method name.
@@ -1784,8 +1878,9 @@
   // @param method [Function, String] method body or name of the method
   // @param args [Array] arguments that will be passed to the method call
   // @param block [Function] ruby block
+  // @param blockopts [Object, Number] optional properties to set on the block
   // @return [Object] returning value of the method call
-  Opal.send = function(recv, method, args, block) {
+  Opal.send = function(recv, method, args, block, blockopts) {
     var body;
 
     if (typeof(method) === 'function') {
@@ -1797,20 +1892,22 @@
       throw Opal.NameError.$new("Passed method should be a string or a function");
     }
 
-    return Opal.send2(recv, body, method, args, block);
+    return Opal.send2(recv, body, method, args, block, blockopts);
   };
 
-  Opal.send2 = function(recv, body, method, args, block) {
+  Opal.send2 = function(recv, body, method, args, block, blockopts) {
     if (body == null && method != null && recv.$method_missing) {
       body = recv.$method_missing;
       args = [method].concat(args);
     }
 
+    apply_blockopts(block, blockopts);
+
     if (typeof block === 'function') body.$$p = block;
     return body.apply(recv, args);
   };
 
-  Opal.refined_send = function(refinement_groups, recv, method, args, block) {
+  Opal.refined_send = function(refinement_groups, recv, method, args, block, blockopts) {
     var i, j, k, ancestors, ancestor, refinements, refinement, refine_modules, refine_module, body;
 
     if (recv.hasOwnProperty('$$meta')) {
@@ -1838,18 +1935,21 @@
             // Does this module define a method we want to call?
             if (typeof refine_module.$$prototype['$'+method] !== 'undefined') {
               body = refine_module.$$prototype['$'+method];
-              return Opal.send2(recv, body, method, args, block);
+              return Opal.send2(recv, body, method, args, block, blockopts);
             }
           }
         }
       }
     }
 
-    return Opal.send(recv, method, args, block);
+    return Opal.send(recv, method, args, block, blockopts);
   };
 
-  Opal.lambda = function(block) {
+  Opal.lambda = function(block, blockopts) {
     block.$$is_lambda = true;
+
+    apply_blockopts(block, blockopts);
+
     return block;
   };
 
@@ -1887,20 +1987,23 @@
   // @param obj  [Object, Class] the actual obj to define method for
   // @param jsid [String] the JavaScript friendly method name (e.g. '$foo')
   // @param body [JS.Function] the literal JavaScript function used as method
+  // @param blockopts [Object, Number] optional properties to set on the body
   // @return [null]
   //
-  Opal.def = function(obj, jsid, body) {
+  Opal.def = function(obj, jsid, body, blockopts) {
+    apply_blockopts(body, blockopts);
+
     // Special case for a method definition in the
     // top-level namespace
     if (obj === Opal.top) {
-      Opal.defn(Opal.Object, jsid, body)
+      return Opal.defn(Opal.Object, jsid, body);
     }
     // if instance_eval is invoked on a module/class, it sets inst_eval_mod
     else if (!obj.$$eval && obj.$$is_a_module) {
-      Opal.defn(obj, jsid, body);
+      return Opal.defn(obj, jsid, body);
     }
     else {
-      Opal.defs(obj, jsid, body);
+      return Opal.defs(obj, jsid, body);
     }
   };
 
@@ -1909,11 +2012,13 @@
     body.displayName = jsid;
     body.$$owner = module;
 
+    var name = jsid.substr(1);
+
     var proto = module.$$prototype;
     if (proto.hasOwnProperty('$$dummy')) {
       proto = proto.$$define_methods_on;
     }
-    $defineProperty(proto, jsid, body);
+    $prop(proto, jsid, body);
 
     if (module.$$is_module) {
       if (module.$$module_function) {
@@ -1922,25 +2027,29 @@
 
       for (var i = 0, iclasses = module.$$iclasses, length = iclasses.length; i < length; i++) {
         var iclass = iclasses[i];
-        $defineProperty(iclass, jsid, body);
+        $prop(iclass, jsid, body);
       }
     }
 
     var singleton_of = module.$$singleton_of;
     if (module.$method_added && !module.$method_added.$$stub && !singleton_of) {
-      module.$method_added(jsid.substr(1));
+      module.$method_added(name);
     }
     else if (singleton_of && singleton_of.$singleton_method_added && !singleton_of.$singleton_method_added.$$stub) {
-      singleton_of.$singleton_method_added(jsid.substr(1));
+      singleton_of.$singleton_method_added(name);
     }
+
+    return name;
   };
 
   // Define a singleton method on the given object (see Opal.def).
-  Opal.defs = function(obj, jsid, body) {
+  Opal.defs = function(obj, jsid, body, blockopts) {
+    apply_blockopts(body, blockopts);
+
     if (obj.$$is_string || obj.$$is_number) {
       throw Opal.TypeError.$new("can't define singleton");
     }
-    Opal.defn(Opal.get_singleton_class(obj), jsid, body)
+    return Opal.defn(Opal.get_singleton_class(obj), jsid, body);
   };
 
   // Called from #remove_method.
@@ -2037,7 +2146,7 @@
         args[i] = arguments[i];
       }
 
-      if (block != null) { alias.$$p = null }
+      delete alias.$$p;
 
       return Opal.send(this, body, args, block);
     };
@@ -2181,7 +2290,7 @@
   };
 
   Opal.hash_delete = function(hash, key) {
-    var i, keys = hash.$$keys, length = keys.length, value;
+    var i, keys = hash.$$keys, length = keys.length, value, key_tmp;
 
     if (key.$$is_string) {
       if (typeof key !== "string") key = key.valueOf();
@@ -2191,7 +2300,13 @@
       }
 
       for (i = 0; i < length; i++) {
-        if (keys[i] === key) {
+        key_tmp = keys[i];
+
+        if (key_tmp.$$is_string && typeof key_tmp !== "string") {
+          key_tmp = key_tmp.valueOf();
+        }
+
+        if (key_tmp === key) {
           keys.splice(i, 1);
           break;
         }
@@ -2540,7 +2655,12 @@
     var module = Opal.modules[path];
 
     if (module) {
-      module(Opal);
+      var retval = module(Opal);
+      if (typeof Promise !== 'undefined' && retval instanceof Promise) {
+        // A special case of require having an async top:
+        // We will need to await it.
+        return retval.then(function() { return true; });
+      }
     }
     else {
       var severity = Opal.config.missing_require_severity;
@@ -2619,18 +2739,86 @@
     return Opal.set_encoding(dup, "binary", "internal_encoding");
   }
 
+  Opal.last_promise = null;
+  Opal.promise_unhandled_exception = false;
+
+  // Run a block of code, but if it returns a Promise, don't run the next
+  // one, but queue it.
+  Opal.queue = function(proc) {
+    if (Opal.last_promise) {
+      // The async path is taken only if anything before returned a
+      // Promise(V2).
+      Opal.last_promise = Opal.last_promise.then(function() {
+        if (!Opal.promise_unhandled_exception) return proc(Opal);
+      })['catch'](function(error) {
+        if (Opal.respond_to(error, '$full_message')) {
+          error = error.$full_message();
+        }
+        console.error(error);
+        // Abort further execution
+        Opal.promise_unhandled_exception = true;
+        Opal.exit(1);
+      });
+      return Opal.last_promise;
+    }
+    else {
+      var ret = proc(Opal);
+      if (typeof Promise === 'function' && typeof ret === 'object' && ret instanceof Promise) {
+        Opal.last_promise = ret;
+      }
+      return ret;
+    }
+  }
+
+  // Operator helpers
+  // ----------------
+  Opal.rb_plus   = function(l,r) { return (typeof(l) === 'number' && typeof(r) === 'number') ? l + r : l['$+'](r); }
+  Opal.rb_minus  = function(l,r) { return (typeof(l) === 'number' && typeof(r) === 'number') ? l - r : l['$-'](r); }
+  Opal.rb_times  = function(l,r) { return (typeof(l) === 'number' && typeof(r) === 'number') ? l * r : l['$*'](r); }
+  Opal.rb_divide = function(l,r) { return (typeof(l) === 'number' && typeof(r) === 'number') ? l / r : l['$/'](r); }
+  Opal.rb_lt     = function(l,r) { return (typeof(l) === 'number' && typeof(r) === 'number') ? l < r : l['$<'](r); }
+  Opal.rb_gt     = function(l,r) { return (typeof(l) === 'number' && typeof(r) === 'number') ? l > r : l['$>'](r); }
+  Opal.rb_le     = function(l,r) { return (typeof(l) === 'number' && typeof(r) === 'number') ? l <= r : l['$<='](r); }
+  Opal.rb_ge     = function(l,r) { return (typeof(l) === 'number' && typeof(r) === 'number') ? l >= r : l['$>='](r); }
+
+  // Optimized helpers for calls like $truthy((a)['$==='](b)) -> $eqeqeq(a, b)
+  Opal.eqeq = function(lhs, rhs) {
+    if ((typeof lhs === 'number' && typeof rhs === 'number') ||
+        (typeof lhs === 'string' && typeof rhs === 'string')) {
+      return lhs === rhs;
+    }
+    return $truthy((lhs)['$=='](rhs));
+  };
+  Opal.eqeqeq = function(lhs, rhs) {
+    if ((typeof lhs === 'number' && typeof rhs === 'number') ||
+        (typeof lhs === 'string' && typeof rhs === 'string')) {
+      return lhs === rhs;
+    }
+    return $truthy((lhs)['$==='](rhs));
+  };
+  Opal.neqeq = function(lhs, rhs) {
+    if ((typeof lhs === 'number' && typeof rhs === 'number') ||
+        (typeof lhs === 'string' && typeof rhs === 'string')) {
+      return lhs !== rhs;
+    }
+    return $truthy((lhs)['$!='](rhs));
+  };
+  Opal.not = function(arg) {
+    if (true === arg) return false;
+    if (undefined === arg || null === arg || false === arg || nil === arg) return true;
+    return $truthy(arg['$!']());
+  }
+
+
 
   // Initialization
   // --------------
-  function $BasicObject() {}
-  function $Object() {}
-  function $Module() {}
-  function $Class() {}
-
-  Opal.BasicObject = BasicObject = Opal.allocate_class('BasicObject', null, $BasicObject);
-  Opal.Object      = _Object     = Opal.allocate_class('Object', Opal.BasicObject, $Object);
-  Opal.Module      = Module      = Opal.allocate_class('Module', Opal.Object, $Module);
-  Opal.Class       = Class       = Opal.allocate_class('Class', Opal.Module, $Class);
+  Opal.BasicObject = BasicObject = Opal.allocate_class('BasicObject', null);
+  Opal.Object      = _Object     = Opal.allocate_class('Object', Opal.BasicObject);
+  Opal.Module      = Module      = Opal.allocate_class('Module', Opal.Object);
+  Opal.Class       = Class       = Opal.allocate_class('Class', Opal.Module);
+  Opal.Opal        = _Opal       = Opal.allocate_module('Opal');
+  Opal.Kernel      = Kernel      = Opal.allocate_module('Kernel');
 
   $set_proto(Opal.BasicObject, Opal.Class.$$prototype);
   $set_proto(Opal.Object, Opal.Class.$$prototype);
@@ -2641,19 +2829,23 @@
   BasicObject.$$const["BasicObject"] = BasicObject;
 
   // Assign basic constants
-  Opal.const_set(_Object, "BasicObject",  BasicObject);
-  Opal.const_set(_Object, "Object",       _Object);
-  Opal.const_set(_Object, "Module",       Module);
-  Opal.const_set(_Object, "Class",        Class);
+  $const_set(_Object, "BasicObject",  BasicObject);
+  $const_set(_Object, "Object",       _Object);
+  $const_set(_Object, "Module",       Module);
+  $const_set(_Object, "Class",        Class);
+  $const_set(_Object, "Opal",         _Opal);
+  $const_set(_Object, "Kernel",       Kernel);
 
   // Fix booted classes to have correct .class value
   BasicObject.$$class = Class;
   _Object.$$class     = Class;
   Module.$$class      = Class;
   Class.$$class       = Class;
+  _Opal.$$class       = Module;
+  Kernel.$$class      = Module;
 
   // Forward .toString() to #to_s
-  $defineProperty(_Object.$$prototype, 'toString', function() {
+  $prop(_Object.$$prototype, 'toString', function() {
     var to_s = this.$to_s();
     if (to_s.$$is_string && typeof(to_s) === 'object') {
       // a string created using new String('string')
@@ -2665,7 +2857,7 @@
 
   // Make Kernel#require immediately available as it's needed to require all the
   // other corelib files.
-  $defineProperty(_Object.$$prototype, '$require', Opal.require);
+  $prop(_Object.$$prototype, '$require', Opal.require);
 
   // Instantiate the main object
   Opal.top = new _Object();
@@ -2674,17 +2866,15 @@
 
   // Foward calls to define_method on the top object to Object
   function top_define_method() {
-    var args = Opal.slice.call(arguments, 0, arguments.length);
+    var args = Opal.slice.call(arguments);
     var block = top_define_method.$$p;
-    top_define_method.$$p = null;
+    delete top_define_method.$$p;
     return Opal.send(_Object, 'define_method', args, block)
   };
 
-
   // Nil
-  function $NilClass() {}
-  Opal.NilClass = Opal.allocate_class('NilClass', Opal.Object, $NilClass);
-  Opal.const_set(_Object, 'NilClass', Opal.NilClass);
+  Opal.NilClass = Opal.allocate_class('NilClass', Opal.Object);
+  $const_set(_Object, 'NilClass', Opal.NilClass);
   nil = Opal.nil = new Opal.NilClass();
   nil.$$id = nil_id;
   nil.call = nil.apply = function() { throw Opal.LocalJumpError.$new('no block given'); };
@@ -2695,82 +2885,77 @@
   TypeError.$$super = Error;
 }).call(this);
 Opal.loaded(["corelib/runtime.js"]);
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/helpers"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $type_error = Opal.type_error, $coerce_to = Opal.coerce_to, $module = Opal.module, $truthy = Opal.truthy;
+Opal.modules["corelib/helpers"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var nil = Opal.nil, $$$ = Opal.$$$, $type_error = Opal.type_error, $coerce_to = Opal.coerce_to, $module = Opal.module, $defs = Opal.defs, $eqeqeq = Opal.eqeqeq, $Kernel = Opal.Kernel, $truthy = Opal.truthy, $Opal = Opal.Opal;
 
-  Opal.add_stubs(['$===', '$raise', '$respond_to?', '$nil?', '$__send__', '$<=>', '$class', '$coerce_to!', '$new', '$!=', '$[]', '$upcase']);
-  return (function($base, $parent_nesting) {
+  Opal.add_stubs('===,raise,respond_to?,nil?,__send__,<=>,class,coerce_to!,new,to_s,__id__');
+  return (function($base) {
     var self = $module($base, 'Opal');
 
-    var $nesting = [self].concat($parent_nesting), $Opal_bridge$1, $Opal_coerce_to$excl$2, $Opal_coerce_to$ques$3, $Opal_try_convert$4, $Opal_compare$5, $Opal_destructure$6, $Opal_respond_to$ques$7, $Opal_instance_variable_name$excl$8, $Opal_class_variable_name$excl$9, $Opal_const_name$excl$10, $Opal_pristine$11;
-
     
-    Opal.defs(self, '$bridge', $Opal_bridge$1 = function $$bridge(constructor, klass) {
-      var self = this;
-
+    
+    $defs(self, '$bridge', function $$bridge(constructor, klass) {
+      
       return Opal.bridge(constructor, klass);
-    }, $Opal_bridge$1.$$arity = 2);
-    Opal.defs(self, '$coerce_to!', $Opal_coerce_to$excl$2 = function(object, type, method, $a) {
-      var $post_args, args, self = this, coerced = nil;
+    }, 2);
+    $defs(self, '$coerce_to!', function $Opal_coerce_to$excl$1(object, type, method, $a) {
+      var $post_args, args, coerced = nil;
 
       
       
-      $post_args = Opal.slice.call(arguments, 3, arguments.length);
+      $post_args = Opal.slice.call(arguments, 3);
       
       args = $post_args;;
       coerced = $coerce_to(object, type, method, args);
-      if ($truthy(type['$==='](coerced))) {
-      } else {
-        self.$raise($type_error(object, type, method, coerced))
+      if (!$eqeqeq(type, coerced)) {
+        $Kernel.$raise($type_error(object, type, method, coerced))
       };
       return coerced;
-    }, $Opal_coerce_to$excl$2.$$arity = -4);
-    Opal.defs(self, '$coerce_to?', $Opal_coerce_to$ques$3 = function(object, type, method, $a) {
-      var $post_args, args, self = this, coerced = nil;
+    }, -4);
+    $defs(self, '$coerce_to?', function $Opal_coerce_to$ques$2(object, type, method, $a) {
+      var $post_args, args, coerced = nil;
 
       
       
-      $post_args = Opal.slice.call(arguments, 3, arguments.length);
+      $post_args = Opal.slice.call(arguments, 3);
       
       args = $post_args;;
-      if ($truthy(object['$respond_to?'](method))) {
-      } else {
+      if (!$truthy(object['$respond_to?'](method))) {
         return nil
       };
       coerced = $coerce_to(object, type, method, args);
       if ($truthy(coerced['$nil?']())) {
-        return nil};
-      if ($truthy(type['$==='](coerced))) {
-      } else {
-        self.$raise($type_error(object, type, method, coerced))
+        return nil
+      };
+      if (!$eqeqeq(type, coerced)) {
+        $Kernel.$raise($type_error(object, type, method, coerced))
       };
       return coerced;
-    }, $Opal_coerce_to$ques$3.$$arity = -4);
-    Opal.defs(self, '$try_convert', $Opal_try_convert$4 = function $$try_convert(object, type, method) {
-      var self = this;
-
+    }, -4);
+    $defs(self, '$try_convert', function $$try_convert(object, type, method) {
+      
       
-      if ($truthy(type['$==='](object))) {
-        return object};
+      if ($eqeqeq(type, object)) {
+        return object
+      };
       if ($truthy(object['$respond_to?'](method))) {
         return object.$__send__(method)
       } else {
         return nil
       };
-    }, $Opal_try_convert$4.$$arity = 3);
-    Opal.defs(self, '$compare', $Opal_compare$5 = function $$compare(a, b) {
-      var self = this, compare = nil;
+    }, 3);
+    $defs(self, '$compare', function $$compare(a, b) {
+      var compare = nil;
 
       
       compare = a['$<=>'](b);
       if ($truthy(compare === nil)) {
-        self.$raise($$($nesting, 'ArgumentError'), "" + "comparison of " + (a.$class()) + " with " + (b.$class()) + " failed")};
+        $Kernel.$raise($$$('ArgumentError'), "comparison of " + (a.$class()) + " with " + (b.$class()) + " failed")
+      };
       return compare;
-    }, $Opal_compare$5.$$arity = 2);
-    Opal.defs(self, '$destructure', $Opal_destructure$6 = function $$destructure(args) {
-      var self = this;
-
+    }, 2);
+    $defs(self, '$destructure', function $$destructure(args) {
+      
       
       if (args.length == 1) {
         return args[0];
@@ -2785,57 +2970,67 @@ Opal.modules["corelib/helpers"] = function(Opal) {
         return args_ary;
       }
     
-    }, $Opal_destructure$6.$$arity = 1);
-    Opal.defs(self, '$respond_to?', $Opal_respond_to$ques$7 = function(obj, method, include_all) {
-      var self = this;
-
+    }, 1);
+    $defs(self, '$respond_to?', function $Opal_respond_to$ques$3(obj, method, include_all) {
       
       
-      if (include_all == null) {
-        include_all = false;
-      };
+      
+      if (include_all == null) include_all = false;;
       
       if (obj == null || !obj.$$class) {
         return false;
       }
     ;
       return obj['$respond_to?'](method, include_all);
-    }, $Opal_respond_to$ques$7.$$arity = -3);
-    Opal.defs(self, '$instance_variable_name!', $Opal_instance_variable_name$excl$8 = function(name) {
-      var self = this;
-
+    }, -3);
+    $defs(self, '$instance_variable_name!', function $Opal_instance_variable_name$excl$4(name) {
       
-      name = $$($nesting, 'Opal')['$coerce_to!'](name, $$($nesting, 'String'), "to_str");
-      if ($truthy(/^@[a-zA-Z_][a-zA-Z0-9_]*?$/.test(name))) {
-      } else {
-        self.$raise($$($nesting, 'NameError').$new("" + "'" + (name) + "' is not allowed as an instance variable name", name))
+      
+      name = $Opal['$coerce_to!'](name, $$$('String'), "to_str");
+      if (!$truthy(/^@[a-zA-Z_][a-zA-Z0-9_]*?$/.test(name))) {
+        $Kernel.$raise($$$('NameError').$new("'" + (name) + "' is not allowed as an instance variable name", name))
       };
       return name;
-    }, $Opal_instance_variable_name$excl$8.$$arity = 1);
-    Opal.defs(self, '$class_variable_name!', $Opal_class_variable_name$excl$9 = function(name) {
-      var self = this;
-
+    }, 1);
+    $defs(self, '$class_variable_name!', function $Opal_class_variable_name$excl$5(name) {
+      
       
-      name = $$($nesting, 'Opal')['$coerce_to!'](name, $$($nesting, 'String'), "to_str");
+      name = $Opal['$coerce_to!'](name, $$$('String'), "to_str");
       if ($truthy(name.length < 3 || name.slice(0,2) !== '@@')) {
-        self.$raise($$($nesting, 'NameError').$new("" + "`" + (name) + "' is not allowed as a class variable name", name))};
+        $Kernel.$raise($$$('NameError').$new("`" + (name) + "' is not allowed as a class variable name", name))
+      };
       return name;
-    }, $Opal_class_variable_name$excl$9.$$arity = 1);
-    Opal.defs(self, '$const_name!', $Opal_const_name$excl$10 = function(const_name) {
-      var self = this;
+    }, 1);
+    $defs(self, '$const_name?', function $Opal_const_name$ques$6(const_name) {
+      
+      
+      if (typeof const_name !== 'string') {
+        (const_name = $Opal['$coerce_to!'](const_name, $$$('String'), "to_str"))
+      }
+
+      return const_name[0] === const_name[0].toUpperCase()
+    
+    }, 1);
+    $defs(self, '$const_name!', function $Opal_const_name$excl$7(const_name) {
+      var $a, self = this;
 
       
-      const_name = $$($nesting, 'Opal')['$coerce_to!'](const_name, $$($nesting, 'String'), "to_str");
-      if ($truthy(const_name['$[]'](0)['$!='](const_name['$[]'](0).$upcase()))) {
-        self.$raise($$($nesting, 'NameError'), "" + "wrong constant name " + (const_name))};
+      if ($truthy((($a = $$$('::', 'String', 'skip_raise')) ? 'constant' : nil))) {
+        const_name = $Opal['$coerce_to!'](const_name, $$$('String'), "to_str")
+      };
+      
+      if (!const_name || const_name[0] != const_name[0].toUpperCase()) {
+        self.$raise($$$('NameError'), "wrong constant name " + (const_name))
+      }
+    ;
       return const_name;
-    }, $Opal_const_name$excl$10.$$arity = 1);
-    return (Opal.defs(self, '$pristine', $Opal_pristine$11 = function $$pristine(owner_class, $a) {
-      var $post_args, method_names, self = this;
+    }, 1);
+    $defs(self, '$pristine', function $$pristine(owner_class, $a) {
+      var $post_args, method_names;
 
       
       
-      $post_args = Opal.slice.call(arguments, 1, arguments.length);
+      $post_args = Opal.slice.call(arguments, 1);
       
       method_names = $post_args;;
       
@@ -2850,28 +3045,74 @@ Opal.modules["corelib/helpers"] = function(Opal) {
       }
     ;
       return nil;
-    }, $Opal_pristine$11.$$arity = -2), nil) && 'pristine';
-  })($nesting[0], $nesting)
+    }, -2);
+    var inspect_stack = [];
+    return $defs(self, '$inspect', function $$inspect(value) {
+      var e = nil;
+
+      
+      ;
+      var pushed = false;
+      
+      return (function() { try {
+      try {
+        
+        
+        if (value === null) {
+          // JS null value
+          return 'null';
+        }
+        else if (value === undefined) {
+          // JS undefined value
+          return 'undefined';
+        }
+        else if (typeof value.$$class === 'undefined') {
+          // JS object / other value that is not bridged
+          return Object.prototype.toString.apply(value);
+        }
+        else if (typeof value.$inspect !== 'function' || value.$inspect.$$stub) {
+          // BasicObject and friends
+          return "#<" + (value.$$class) + ":0x" + (value.$__id__().$to_s(16)) + ">"
+        }
+        else if (inspect_stack.indexOf(value.$__id__()) !== -1) {
+          // inspect recursing inside inspect to find out about the
+          // same object
+          return "#<" + (value.$$class) + ":0x" + (value.$__id__().$to_s(16)) + ">"
+        }
+        else {
+          // anything supporting Opal
+          inspect_stack.push(value.$__id__());
+          pushed = true;
+          return value.$inspect();
+        }
+      ;
+        return nil;
+      } catch ($err) {
+        if (Opal.rescue($err, [$$$('Exception')])) {(e = $err)
+          try {
+            return "#<" + (value.$$class) + ":0x" + (value.$__id__().$to_s(16)) + ">"
+          } finally { Opal.pop_exception(); }
+        } else { throw $err; }
+      }
+      } finally {
+        if (pushed) inspect_stack.pop()
+      }; })();;
+    }, -1);
+  })('::')
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/module"] = function(Opal) {
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $truthy = Opal.truthy, $coerce_to = Opal.coerce_to, $klass = Opal.klass, $send = Opal.send, $hash2 = Opal.hash2, $lambda = Opal.lambda, $range = Opal.range, $alias = Opal.alias, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["corelib/module"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $truthy = Opal.truthy, $coerce_to = Opal.coerce_to, $const_set = Opal.const_set, $Object = Opal.Object, $klass = Opal.klass, $defs = Opal.defs, $send = Opal.send, $def = Opal.def, $eqeqeq = Opal.eqeqeq, $Module = Opal.Module, $Kernel = Opal.Kernel, $rb_lt = Opal.rb_lt, $rb_gt = Opal.rb_gt, $to_a = Opal.to_a, $hash2 = Opal.hash2, $Opal = Opal.Opal, $eqeq = Opal.eqeq, $lambda = Opal.lambda, $range = Opal.range, $send2 = Opal.send2, $find_super = Opal.find_super, $alias = Opal.alias;
 
-  Opal.add_stubs(['$module_eval', '$to_proc', '$===', '$raise', '$equal?', '$<', '$>', '$nil?', '$attr_reader', '$attr_writer', '$warn', '$attr_accessor', '$class_variable_name!', '$const_name!', '$=~', '$new', '$inject', '$split', '$const_get', '$==', '$!~', '$start_with?', '$bind', '$call', '$class', '$append_features', '$included', '$name', '$cover?', '$size', '$merge', '$compile', '$proc', '$any?', '$prepend_features', '$prepended', '$to_s', '$__id__', '$constants', '$include?', '$copy_class_variables', '$copy_constants', '$define_singleton_method', '$inspect', '$class_exec']);
-  return (function($base, $super, $parent_nesting) {
+  Opal.add_stubs('module_eval,to_proc,===,raise,equal?,<,>,nil?,attr_reader,attr_writer,warn,attr_accessor,const_name?,class_variable_name!,const_name!,=~,new,inject,split,const_get,==,start_with?,!~,bind,call,class,append_features,included,name,cover?,size,merge,compile,proc,any?,prepend_features,prepended,to_s,__id__,constants,include?,copy_class_variables,copy_constants,class_exec,inspect');
+  
+  (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Module');
 
-    var $nesting = [self].concat($parent_nesting), $Module_allocate$1, $Module_initialize$2, $Module_$eq_eq_eq$3, $Module_$lt$4, $Module_$lt_eq$5, $Module_$gt$6, $Module_$gt_eq$7, $Module_$lt_eq_gt$8, $Module_alias_method$9, $Module_alias_native$10, $Module_ancestors$11, $Module_append_features$12, $Module_attr_accessor$13, $Module_attr$14, $Module_attr_reader$15, $Module_attr_writer$16, $Module_autoload$17, $Module_class_variables$18, $Module_class_variable_get$19, $Module_class_variable_set$20, $Module_class_variable_defined$ques$21, $Module_remove_class_variable$22, $Module_constants$23, $Module_constants$24, $Module_nesting$25, $Module_const_defined$ques$26, $Module_const_get$27, $Module_const_missing$29, $Module_const_set$30, $Module_public_constant$31, $Module_define_method$32, $Module_remove_method$34, $Module_singleton_class$ques$35, $Module_include$36, $Module_included_modules$37, $Module_include$ques$38, $Module_instance_method$39, $Module_instance_methods$40, $Module_included$41, $Module_extended$42, $Module_extend_object$43, $Module_method_added$44, $Module_method_removed$45, $Module_method_undefined$46, $Module_module_eval$47, $Module_module_exec$49, $Module_method_defined$ques$50, $Module_module_function$51, $Module_name$52, $Module_prepend$53, $Module_prepend_features$54, $Module_prepended$55, $Module_remove_const$56, $Module_to_s$57, $Module_undef_method$58, $Module_instance_variables$59, $Module_dup$60, $Module_copy_class_variables$61, $Module_copy_constants$62, $Module_refine$63, $Module_using$65;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
-    Opal.defs(self, '$allocate', $Module_allocate$1 = function $$allocate() {
+    $defs(self, '$allocate', function $$allocate() {
       var self = this;
 
       
@@ -2880,38 +3121,37 @@ Opal.modules["corelib/module"] = function(Opal) {
       if (self !== Opal.Module) Object.setPrototypeOf(module, self.$$prototype);
       return module;
     
-    }, $Module_allocate$1.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$initialize', $Module_initialize$2 = function $$initialize() {
-      var $iter = $Module_initialize$2.$$p, block = $iter || nil, self = this;
+    $def(self, '$initialize', function $$initialize() {
+      var block = $$initialize.$$p || nil, self = this;
 
-      if ($iter) $Module_initialize$2.$$p = null;
-      
+      delete $$initialize.$$p;
       
-      if ($iter) $Module_initialize$2.$$p = null;;
+      ;
       if ((block !== nil)) {
         return $send(self, 'module_eval', [], block.$to_proc())
       } else {
         return nil
       };
-    }, $Module_initialize$2.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$===', $Module_$eq_eq_eq$3 = function(object) {
+    $def(self, '$===', function $Module_$eq_eq_eq$1(object) {
       var self = this;
 
       
       if ($truthy(object == null)) {
-        return false};
+        return false
+      };
       return Opal.is_a(object, self);;
-    }, $Module_$eq_eq_eq$3.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$<', $Module_$lt$4 = function(other) {
+    $def(self, '$<', function $Module_$lt$2(other) {
       var self = this;
 
       
-      if ($truthy($$($nesting, 'Module')['$==='](other))) {
-      } else {
-        self.$raise($$($nesting, 'TypeError'), "compared with non class/module")
+      if (!$eqeqeq($Module, other)) {
+        $Kernel.$raise($$$('TypeError'), "compared with non class/module")
       };
       
       var working = self,
@@ -2936,9 +3176,9 @@ Opal.modules["corelib/module"] = function(Opal) {
 
       return nil;
     ;
-    }, $Module_$lt$4.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$<=', $Module_$lt_eq$5 = function(other) {
+    $def(self, '$<=', function $Module_$lt_eq$3(other) {
       var self = this, $ret_or_1 = nil;
 
       if ($truthy(($ret_or_1 = self['$equal?'](other)))) {
@@ -2946,30 +3186,29 @@ Opal.modules["corelib/module"] = function(Opal) {
       } else {
         return $rb_lt(self, other)
       }
-    }, $Module_$lt_eq$5.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$>', $Module_$gt$6 = function(other) {
+    $def(self, '$>', function $Module_$gt$4(other) {
       var self = this;
 
       
-      if ($truthy($$($nesting, 'Module')['$==='](other))) {
-      } else {
-        self.$raise($$($nesting, 'TypeError'), "compared with non class/module")
+      if (!$eqeqeq($Module, other)) {
+        $Kernel.$raise($$$('TypeError'), "compared with non class/module")
       };
       return $rb_lt(other, self);
-    }, $Module_$gt$6.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$>=', $Module_$gt_eq$7 = function(other) {
-      var self = this, $ret_or_2 = nil;
+    $def(self, '$>=', function $Module_$gt_eq$5(other) {
+      var self = this, $ret_or_1 = nil;
 
-      if ($truthy(($ret_or_2 = self['$equal?'](other)))) {
-        return $ret_or_2
+      if ($truthy(($ret_or_1 = self['$equal?'](other)))) {
+        return $ret_or_1
       } else {
         return $rb_gt(self, other)
       }
-    }, $Module_$gt_eq$7.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$<=>', $Module_$lt_eq_gt$8 = function(other) {
+    $def(self, '$<=>', function $Module_$lt_eq_gt$6(other) {
       var self = this, lt = nil;
 
       
@@ -2978,74 +3217,72 @@ Opal.modules["corelib/module"] = function(Opal) {
         return 0;
       }
     ;
-      if ($truthy($$($nesting, 'Module')['$==='](other))) {
-      } else {
+      if (!$eqeqeq($Module, other)) {
         return nil
       };
       lt = $rb_lt(self, other);
       if ($truthy(lt['$nil?']())) {
-        return nil};
+        return nil
+      };
       if ($truthy(lt)) {
         return -1
       } else {
         return 1
       };
-    }, $Module_$lt_eq_gt$8.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$alias_method', $Module_alias_method$9 = function $$alias_method(newname, oldname) {
+    $def(self, '$alias_method', function $$alias_method(newname, oldname) {
       var self = this;
 
       
-      newname = $coerce_to(newname, $$($nesting, 'String'), 'to_str');
-      oldname = $coerce_to(oldname, $$($nesting, 'String'), 'to_str');
+      newname = $coerce_to(newname, $$$('String'), 'to_str');
+      oldname = $coerce_to(oldname, $$$('String'), 'to_str');
       Opal.alias(self, newname, oldname);
       return self;
-    }, $Module_alias_method$9.$$arity = 2);
+    }, 2);
     
-    Opal.def(self, '$alias_native', $Module_alias_native$10 = function $$alias_native(mid, jsid) {
+    $def(self, '$alias_native', function $$alias_native(mid, jsid) {
       var self = this;
 
       
       
-      if (jsid == null) {
-        jsid = mid;
-      };
+      if (jsid == null) jsid = mid;;
       Opal.alias_native(self, mid, jsid);
       return self;
-    }, $Module_alias_native$10.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$ancestors', $Module_ancestors$11 = function $$ancestors() {
+    $def(self, '$ancestors', function $$ancestors() {
       var self = this;
 
       return Opal.ancestors(self);
-    }, $Module_ancestors$11.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$append_features', $Module_append_features$12 = function $$append_features(includer) {
+    $def(self, '$append_features', function $$append_features(includer) {
       var self = this;
 
       
       Opal.append_features(self, includer);
       return self;
-    }, $Module_append_features$12.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$attr_accessor', $Module_attr_accessor$13 = function $$attr_accessor($a) {
+    $def(self, '$attr_accessor', function $$attr_accessor($a) {
       var $post_args, names, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       names = $post_args;;
-      $send(self, 'attr_reader', Opal.to_a(names));
-      return $send(self, 'attr_writer', Opal.to_a(names));
-    }, $Module_attr_accessor$13.$$arity = -1);
+      $send(self, 'attr_reader', $to_a(names));
+      return $send(self, 'attr_writer', $to_a(names));
+    }, -1);
     
-    Opal.def(self, '$attr', $Module_attr$14 = function $$attr($a) {
+    $def(self, '$attr', function $$attr($a) {
       var $post_args, args, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
       
@@ -3056,15 +3293,15 @@ Opal.modules["corelib/module"] = function(Opal) {
         return nil;
       }
     ;
-      return $send(self, 'attr_reader', Opal.to_a(args));
-    }, $Module_attr$14.$$arity = -1);
+      return $send(self, 'attr_reader', $to_a(args));
+    }, -1);
     
-    Opal.def(self, '$attr_reader', $Module_attr_reader$15 = function $$attr_reader($a) {
+    $def(self, '$attr_reader', function $$attr_reader($a) {
       var $post_args, names, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       names = $post_args;;
       
@@ -3089,7 +3326,7 @@ Opal.modules["corelib/module"] = function(Opal) {
         })(ivar);
 
         // initialize the instance variable as nil
-        Opal.defineProperty(proto, ivar, nil);
+        Opal.prop(proto, ivar, nil);
 
         body.$$parameters = [];
         body.$$arity = 0;
@@ -3098,14 +3335,14 @@ Opal.modules["corelib/module"] = function(Opal) {
       }
     ;
       return nil;
-    }, $Module_attr_reader$15.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$attr_writer', $Module_attr_writer$16 = function $$attr_writer($a) {
+    $def(self, '$attr_writer', function $$attr_writer($a) {
       var $post_args, names, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       names = $post_args;;
       
@@ -3128,89 +3365,118 @@ Opal.modules["corelib/module"] = function(Opal) {
         body.$$arity = 1;
 
         // initialize the instance variable as nil
-        Opal.defineProperty(proto, ivar, nil);
+        Opal.prop(proto, ivar, nil);
 
         Opal.defn(self, id, body);
       }
     ;
       return nil;
-    }, $Module_attr_writer$16.$$arity = -1);
+    }, -1);
+    
+    $def(self, '$autoload', function $$autoload(const$, path) {
+      var self = this;
+
+      
+      if (!$$('Opal')['$const_name?'](const$)) {
+        $Kernel.$raise($$$('NameError'), "autoload must be constant name: " + (const$))
+      }
+
+      if (path == "") {
+        $Kernel.$raise($$$('ArgumentError'), "empty file name")
+      }
+
+      if (!self.$$const.hasOwnProperty(const$)) {
+        if (!self.$$autoload) {
+          self.$$autoload = {};
+        }
+        Opal.const_cache_version++;
+        self.$$autoload[const$] = { path: path, loaded: false, required: false, success: false, exception: false };
+      }
+      return nil;
+    
+    }, 2);
     
-    Opal.def(self, '$autoload', $Module_autoload$17 = function $$autoload(const$, path) {
+    $def(self, '$autoload?', function $Module_autoload$ques$7(const$) {
       var self = this;
 
       
-      if (self.$$autoload == null) self.$$autoload = {};
-      Opal.const_cache_version++;
-      self.$$autoload[const$] = path;
+      if (self.$$autoload && self.$$autoload[const$] && !self.$$autoload[const$].required && !self.$$autoload[const$].success) {
+        return self.$$autoload[const$].path;
+      }
+
+      var ancestors = self.$ancestors();
+
+      for (var i = 0, length = ancestors.length; i < length; i++) {
+        if (ancestors[i].$$autoload && ancestors[i].$$autoload[const$] && !ancestors[i].$$autoload[const$].required && !ancestors[i].$$autoload[const$].success) {
+          return ancestors[i].$$autoload[const$].path;
+        }
+      }
       return nil;
     
-    }, $Module_autoload$17.$$arity = 2);
+    }, 1);
     
-    Opal.def(self, '$class_variables', $Module_class_variables$18 = function $$class_variables() {
+    $def(self, '$class_variables', function $$class_variables() {
       var self = this;
 
       return Object.keys(Opal.class_variables(self));
-    }, $Module_class_variables$18.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$class_variable_get', $Module_class_variable_get$19 = function $$class_variable_get(name) {
+    $def(self, '$class_variable_get', function $$class_variable_get(name) {
       var self = this;
 
       
-      name = $$($nesting, 'Opal')['$class_variable_name!'](name);
+      name = $Opal['$class_variable_name!'](name);
       return Opal.class_variable_get(self, name, false);;
-    }, $Module_class_variable_get$19.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$class_variable_set', $Module_class_variable_set$20 = function $$class_variable_set(name, value) {
+    $def(self, '$class_variable_set', function $$class_variable_set(name, value) {
       var self = this;
 
       
-      name = $$($nesting, 'Opal')['$class_variable_name!'](name);
+      name = $Opal['$class_variable_name!'](name);
       return Opal.class_variable_set(self, name, value);;
-    }, $Module_class_variable_set$20.$$arity = 2);
+    }, 2);
     
-    Opal.def(self, '$class_variable_defined?', $Module_class_variable_defined$ques$21 = function(name) {
+    $def(self, '$class_variable_defined?', function $Module_class_variable_defined$ques$8(name) {
       var self = this;
 
       
-      name = $$($nesting, 'Opal')['$class_variable_name!'](name);
+      name = $Opal['$class_variable_name!'](name);
       return Opal.class_variables(self).hasOwnProperty(name);;
-    }, $Module_class_variable_defined$ques$21.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$remove_class_variable', $Module_remove_class_variable$22 = function $$remove_class_variable(name) {
+    $def(self, '$remove_class_variable', function $$remove_class_variable(name) {
       var self = this;
 
       
-      name = $$($nesting, 'Opal')['$class_variable_name!'](name);
+      name = $Opal['$class_variable_name!'](name);
       
       if (Opal.hasOwnProperty.call(self.$$cvars, name)) {
         var value = self.$$cvars[name];
         delete self.$$cvars[name];
         return value;
       } else {
-        self.$raise($$($nesting, 'NameError'), "" + "cannot remove " + (name) + " for " + (self))
+        $Kernel.$raise($$$('NameError'), "cannot remove " + (name) + " for " + (self))
       }
     ;
-    }, $Module_remove_class_variable$22.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$constants', $Module_constants$23 = function $$constants(inherit) {
+    $def(self, '$constants', function $$constants(inherit) {
       var self = this;
 
       
       
-      if (inherit == null) {
-        inherit = true;
-      };
+      if (inherit == null) inherit = true;;
       return Opal.constants(self, inherit);;
-    }, $Module_constants$23.$$arity = -1);
-    Opal.defs(self, '$constants', $Module_constants$24 = function $$constants(inherit) {
+    }, -1);
+    $defs(self, '$constants', function $$constants(inherit) {
       var self = this;
 
       
       ;
       
       if (inherit == null) {
-        var nesting = (self.$$nesting || []).concat(Opal.Object),
+        var nesting = (self.$$nesting || []).concat($Object),
             constant, constants = {},
             i, ii;
 
@@ -3224,25 +3490,22 @@ Opal.modules["corelib/module"] = function(Opal) {
         return Opal.constants(self, inherit)
       }
     ;
-    }, $Module_constants$24.$$arity = -1);
-    Opal.defs(self, '$nesting', $Module_nesting$25 = function $$nesting() {
+    }, -1);
+    $defs(self, '$nesting', function $$nesting() {
       var self = this;
 
       return self.$$nesting || [];
-    }, $Module_nesting$25.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$const_defined?', $Module_const_defined$ques$26 = function(name, inherit) {
+    $def(self, '$const_defined?', function $Module_const_defined$ques$9(name, inherit) {
       var self = this;
 
       
       
-      if (inherit == null) {
-        inherit = true;
-      };
-      name = $$($nesting, 'Opal')['$const_name!'](name);
-      if ($truthy(name['$=~']($$$($$($nesting, 'Opal'), 'CONST_NAME_REGEXP')))) {
-      } else {
-        self.$raise($$($nesting, 'NameError').$new("" + "wrong constant name " + (name), name))
+      if (inherit == null) inherit = true;;
+      name = $$('Opal')['$const_name!'](name);
+      if (!$truthy(name['$=~']($$$($Opal, 'CONST_NAME_REGEXP')))) {
+        $Kernel.$raise($$$('NameError').$new("wrong constant name " + (name), name))
       };
       
       var module, modules = [self], module_constants, i, ii;
@@ -3253,132 +3516,105 @@ Opal.modules["corelib/module"] = function(Opal) {
 
         // Add Object's ancestors if it's a module – modules have no ancestors otherwise
         if (self.$$is_module) {
-          modules = modules.concat([Opal.Object]).concat(Opal.ancestors(Opal.Object));
+          modules = modules.concat([$Object]).concat(Opal.ancestors($Object));
         }
       }
 
       for (i = 0, ii = modules.length; i < ii; i++) {
         module = modules[i];
-        if (module.$$const[name] != null) {
+        if (module.$$const[name] != null) { return true; }
+        if (
+          module.$$autoload &&
+          module.$$autoload[name] &&
+          !module.$$autoload[name].required &&
+          !module.$$autoload[name].success
+        ) {
           return true;
         }
       }
 
       return false;
     ;
-    }, $Module_const_defined$ques$26.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$const_get', $Module_const_get$27 = function $$const_get(name, inherit) {
-      var $$28, self = this;
+    $def(self, '$const_get', function $$const_get(name, inherit) {
+      var self = this;
 
       
       
-      if (inherit == null) {
-        inherit = true;
-      };
-      name = $$($nesting, 'Opal')['$const_name!'](name);
+      if (inherit == null) inherit = true;;
+      name = $$('Opal')['$const_name!'](name);
       
       if (name.indexOf('::') === 0 && name !== '::'){
         name = name.slice(2);
       }
     ;
       if ($truthy(name.indexOf('::') != -1 && name != '::')) {
-        return $send(name.$split("::"), 'inject', [self], ($$28 = function(o, c){var self = $$28.$$s == null ? this : $$28.$$s;
-
+        return $send(name.$split("::"), 'inject', [self], function $$10(o, c){
           
           
-          if (o == null) {
-            o = nil;
-          };
+          if (o == null) o = nil;;
           
-          if (c == null) {
-            c = nil;
-          };
-          return o.$const_get(c);}, $$28.$$s = self, $$28.$$arity = 2, $$28))};
-      if ($truthy(name['$=~']($$$($$($nesting, 'Opal'), 'CONST_NAME_REGEXP')))) {
-      } else {
-        self.$raise($$($nesting, 'NameError').$new("" + "wrong constant name " + (name), name))
+          if (c == null) c = nil;;
+          return o.$const_get(c);}, 2)
+      };
+      if (!$truthy(name['$=~']($$$($Opal, 'CONST_NAME_REGEXP')))) {
+        $Kernel.$raise($$$('NameError').$new("wrong constant name " + (name), name))
       };
       
       if (inherit) {
-        return $$([self], name);
+        return Opal.$$([self], name);
       } else {
         return Opal.const_get_local(self, name);
       }
     ;
-    }, $Module_const_get$27.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$const_missing', $Module_const_missing$29 = function $$const_missing(name) {
+    $def(self, '$const_missing', function $$const_missing(name) {
       var self = this, full_const_name = nil;
 
       
-      
-      if (self.$$autoload) {
-        var file = self.$$autoload[name];
-
-        if (file) {
-          self.$require(file);
-
-          return self.$const_get(name);
-        }
-      }
-    ;
-      full_const_name = (function() {if (self['$==']($$($nesting, 'Object'))) {
-        return name
-      } else {
-        return "" + (self) + "::" + (name)
-      }; return nil; })();
-      return self.$raise($$($nesting, 'NameError').$new("" + "uninitialized constant " + (full_const_name), name));
-    }, $Module_const_missing$29.$$arity = 1);
+      full_const_name = ($eqeq(self, $Object) ? (name) : ("" + (self) + "::" + (name)));
+      return $Kernel.$raise($$$('NameError').$new("uninitialized constant " + (full_const_name), name));
+    }, 1);
     
-    Opal.def(self, '$const_set', $Module_const_set$30 = function $$const_set(name, value) {
-      var self = this, $ret_or_3 = nil;
+    $def(self, '$const_set', function $$const_set(name, value) {
+      var self = this;
 
       
-      name = $$($nesting, 'Opal')['$const_name!'](name);
-      if ($truthy((function() {if ($truthy(($ret_or_3 = name['$!~']($$$($$($nesting, 'Opal'), 'CONST_NAME_REGEXP'))))) {
-        return $ret_or_3
-      } else {
-        return name['$start_with?']("::")
-      }; return nil; })())) {
-        self.$raise($$($nesting, 'NameError').$new("" + "wrong constant name " + (name), name))};
-      Opal.const_set(self, name, value);
+      name = $Opal['$const_name!'](name);
+      if (($truthy(name['$!~']($$$($Opal, 'CONST_NAME_REGEXP'))) || ($truthy(name['$start_with?']("::"))))) {
+        $Kernel.$raise($$$('NameError').$new("wrong constant name " + (name), name))
+      };
+      $const_set(self, name, value);
       return value;
-    }, $Module_const_set$30.$$arity = 2);
+    }, 2);
     
-    Opal.def(self, '$public_constant', $Module_public_constant$31 = function $$public_constant(const_name) {
-      var self = this;
-
+    $def(self, '$public_constant', function $$public_constant(const_name) {
+      
       return nil
-    }, $Module_public_constant$31.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$define_method', $Module_define_method$32 = function $$define_method(name, method) {
-      var $iter = $Module_define_method$32.$$p, block = $iter || nil, $$33, self = this, $ret_or_4 = nil, $case = nil;
+    $def(self, '$define_method', function $$define_method(name, method) {
+      var block = $$define_method.$$p || nil, self = this, $ret_or_1 = nil, $ret_or_2 = nil;
 
-      if ($iter) $Module_define_method$32.$$p = null;
-      
+      delete $$define_method.$$p;
       
-      if ($iter) $Module_define_method$32.$$p = null;;
       ;
-      if ($truthy(method === undefined && block === nil)) {
-        self.$raise($$($nesting, 'ArgumentError'), "tried to create a Proc object without a block")};
-      block = (function() {if ($truthy(($ret_or_4 = block))) {
-        return $ret_or_4
-      } else {
-        return (function() {$case = method;
-        if ($$($nesting, 'Proc')['$===']($case)) {return method}
-        else if ($$($nesting, 'Method')['$===']($case)) {return method.$to_proc().$$unbound}
-        else if ($$($nesting, 'UnboundMethod')['$===']($case)) {return $lambda(($$33 = function($a){var self = $$33.$$s == null ? this : $$33.$$s, $post_args, args, bound = nil;
+      ;
+      
+      if (method === undefined && block === nil)
+        $Kernel.$raise($$$('ArgumentError'), "tried to create a Proc object without a block")
+    ;
+      block = ($truthy(($ret_or_1 = block)) ? ($ret_or_1) : ($eqeqeq($$$('Proc'), ($ret_or_2 = method)) ? (method) : ($eqeqeq($$$('Method'), $ret_or_2) ? (method.$to_proc().$$unbound) : ($eqeqeq($$$('UnboundMethod'), $ret_or_2) ? ($lambda(function $$11($a){var $post_args, args, self = $$11.$$s == null ? this : $$11.$$s, bound = nil;
 
-          
-          
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
-          
-          args = $post_args;;
-          bound = method.$bind(self);
-          return $send(bound, 'call', Opal.to_a(args));}, $$33.$$s = self, $$33.$$arity = -1, $$33))}
-        else {return self.$raise($$($nesting, 'TypeError'), "" + "wrong argument type " + (block.$class()) + " (expected Proc/Method)")}})()
-      }; return nil; })();
+        
+        
+        $post_args = Opal.slice.call(arguments);
+        
+        args = $post_args;;
+        bound = method.$bind(self);
+        return $send(bound, 'call', $to_a(args));}, {$$arity: -1, $$s: self})) : ($Kernel.$raise($$$('TypeError'), "wrong argument type " + (block.$class()) + " (expected Proc/Method)"))))));
       
       var id = '$' + name;
 
@@ -3387,18 +3623,16 @@ Opal.modules["corelib/module"] = function(Opal) {
       block.$$def         = block;
       block.$$define_meth = true;
 
-      Opal.defn(self, id, block);
-
-      return name;
+      return Opal.defn(self, id, block);
     ;
-    }, $Module_define_method$32.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$remove_method', $Module_remove_method$34 = function $$remove_method($a) {
+    $def(self, '$remove_method', function $$remove_method($a) {
       var $post_args, names, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       names = $post_args;;
       
@@ -3407,20 +3641,20 @@ Opal.modules["corelib/module"] = function(Opal) {
       }
     ;
       return self;
-    }, $Module_remove_method$34.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$singleton_class?', $Module_singleton_class$ques$35 = function() {
+    $def(self, '$singleton_class?', function $Module_singleton_class$ques$12() {
       var self = this;
 
       return !!self.$$is_singleton;
-    }, $Module_singleton_class$ques$35.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$include', $Module_include$36 = function $$include($a) {
+    $def(self, '$include', function $$include($a) {
       var $post_args, mods, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       mods = $post_args;;
       
@@ -3428,7 +3662,7 @@ Opal.modules["corelib/module"] = function(Opal) {
         var mod = mods[i];
 
         if (!mod.$$is_module) {
-          self.$raise($$($nesting, 'TypeError'), "" + "wrong argument type " + ((mod).$class()) + " (expected Module)");
+          $Kernel.$raise($$$('TypeError'), "wrong argument type " + ((mod).$class()) + " (expected Module)");
         }
 
         (mod).$append_features(self);
@@ -3436,20 +3670,20 @@ Opal.modules["corelib/module"] = function(Opal) {
       }
     ;
       return self;
-    }, $Module_include$36.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$included_modules', $Module_included_modules$37 = function $$included_modules() {
+    $def(self, '$included_modules', function $$included_modules() {
       var self = this;
 
       return Opal.included_modules(self);
-    }, $Module_included_modules$37.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$include?', $Module_include$ques$38 = function(mod) {
+    $def(self, '$include?', function $Module_include$ques$13(mod) {
       var self = this;
 
       
       if (!mod.$$is_module) {
-        self.$raise($$($nesting, 'TypeError'), "" + "wrong argument type " + ((mod).$class()) + " (expected Module)");
+        $Kernel.$raise($$$('TypeError'), "wrong argument type " + ((mod).$class()) + " (expected Module)");
       }
 
       var i, ii, mod2, ancestors = Opal.ancestors(self);
@@ -3463,30 +3697,28 @@ Opal.modules["corelib/module"] = function(Opal) {
 
       return false;
     
-    }, $Module_include$ques$38.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$instance_method', $Module_instance_method$39 = function $$instance_method(name) {
+    $def(self, '$instance_method', function $$instance_method(name) {
       var self = this;
 
       
       var meth = self.$$prototype['$' + name];
 
       if (!meth || meth.$$stub) {
-        self.$raise($$($nesting, 'NameError').$new("" + "undefined method `" + (name) + "' for class `" + (self.$name()) + "'", name));
+        $Kernel.$raise($$$('NameError').$new("undefined method `" + (name) + "' for class `" + (self.$name()) + "'", name));
       }
 
-      return $$($nesting, 'UnboundMethod').$new(self, meth.$$owner || self, meth, name);
+      return $$$('UnboundMethod').$new(self, meth.$$owner || self, meth, name);
     
-    }, $Module_instance_method$39.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$instance_methods', $Module_instance_methods$40 = function $$instance_methods(include_super) {
+    $def(self, '$instance_methods', function $$instance_methods(include_super) {
       var self = this;
 
       
       
-      if (include_super == null) {
-        include_super = true;
-      };
+      if (include_super == null) include_super = true;;
       
       if ($truthy(include_super)) {
         return Opal.instance_methods(self);
@@ -3494,94 +3726,81 @@ Opal.modules["corelib/module"] = function(Opal) {
         return Opal.own_instance_methods(self);
       }
     ;
-    }, $Module_instance_methods$40.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$included', $Module_included$41 = function $$included(mod) {
-      var self = this;
-
+    $def(self, '$included', function $$included(mod) {
+      
       return nil
-    }, $Module_included$41.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$extended', $Module_extended$42 = function $$extended(mod) {
-      var self = this;
-
+    $def(self, '$extended', function $$extended(mod) {
+      
       return nil
-    }, $Module_extended$42.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$extend_object', $Module_extend_object$43 = function $$extend_object(object) {
-      var self = this;
-
+    $def(self, '$extend_object', function $$extend_object(object) {
+      
       return nil
-    }, $Module_extend_object$43.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$method_added', $Module_method_added$44 = function $$method_added($a) {
-      var $post_args, self = this;
+    $def(self, '$method_added', function $$method_added($a) {
+      var $post_args, $rest_arg;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
-      ;
+      $post_args = Opal.slice.call(arguments);
+      
+      $rest_arg = $post_args;;
       return nil;
-    }, $Module_method_added$44.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$method_removed', $Module_method_removed$45 = function $$method_removed($a) {
-      var $post_args, self = this;
+    $def(self, '$method_removed', function $$method_removed($a) {
+      var $post_args, $rest_arg;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
-      ;
+      $post_args = Opal.slice.call(arguments);
+      
+      $rest_arg = $post_args;;
       return nil;
-    }, $Module_method_removed$45.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$method_undefined', $Module_method_undefined$46 = function $$method_undefined($a) {
-      var $post_args, self = this;
+    $def(self, '$method_undefined', function $$method_undefined($a) {
+      var $post_args, $rest_arg;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
-      ;
+      $post_args = Opal.slice.call(arguments);
+      
+      $rest_arg = $post_args;;
       return nil;
-    }, $Module_method_undefined$46.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$module_eval', $Module_module_eval$47 = function $$module_eval($a) {
-      var $iter = $Module_module_eval$47.$$p, block = $iter || nil, $post_args, args, $b, $$48, self = this, $ret_or_5 = nil, string = nil, file = nil, _lineno = nil, default_eval_options = nil, $ret_or_6 = nil, compiling_options = nil, compiled = nil;
+    $def(self, '$module_eval', function $$module_eval($a) {
+      var block = $$module_eval.$$p || nil, $post_args, args, $b, self = this, string = nil, file = nil, _lineno = nil, default_eval_options = nil, $ret_or_1 = nil, compiling_options = nil, compiled = nil;
 
-      if ($iter) $Module_module_eval$47.$$p = null;
+      delete $$module_eval.$$p;
       
+      ;
       
-      if ($iter) $Module_module_eval$47.$$p = null;;
-      
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
-      if ($truthy((function() {if ($truthy(($ret_or_5 = block['$nil?']()))) {
-        return !!Opal.compile;
-      } else {
-        return $ret_or_5
-      }; return nil; })())) {
+      if (($truthy(block['$nil?']()) && ($truthy(!!Opal.compile)))) {
         
-        if ($truthy($range(1, 3, false)['$cover?'](args.$size()))) {
-        } else {
-          $$($nesting, 'Kernel').$raise($$($nesting, 'ArgumentError'), "wrong number of arguments (0 for 1..3)")
+        if (!$truthy($range(1, 3, false)['$cover?'](args.$size()))) {
+          $Kernel.$raise($$$('ArgumentError'), "wrong number of arguments (0 for 1..3)")
         };
-        $b = [].concat(Opal.to_a(args)), (string = ($b[0] == null ? nil : $b[0])), (file = ($b[1] == null ? nil : $b[1])), (_lineno = ($b[2] == null ? nil : $b[2])), $b;
-        default_eval_options = $hash2(["file", "eval"], {"file": (function() {if ($truthy(($ret_or_6 = file))) {
-          return $ret_or_6
-        } else {
-          return "(eval)"
-        }; return nil; })(), "eval": true});
+        $b = [].concat($to_a(args)), (string = ($b[0] == null ? nil : $b[0])), (file = ($b[1] == null ? nil : $b[1])), (_lineno = ($b[2] == null ? nil : $b[2])), $b;
+        default_eval_options = $hash2(["file", "eval"], {"file": ($truthy(($ret_or_1 = file)) ? ($ret_or_1) : ("(eval)")), "eval": true});
         compiling_options = Opal.hash({ arity_check: false }).$merge(default_eval_options);
-        compiled = $$($nesting, 'Opal').$compile(string, compiling_options);
-        block = $send($$($nesting, 'Kernel'), 'proc', [], ($$48 = function(){var self = $$48.$$s == null ? this : $$48.$$s;
+        compiled = $Opal.$compile(string, compiling_options);
+        block = $send($Kernel, 'proc', [], function $$14(){var self = $$14.$$s == null ? this : $$14.$$s;
 
-          
-          return (function(self) {
-            return eval(compiled);
-          })(self)
-        }, $$48.$$s = self, $$48.$$arity = 0, $$48));
+          return new Function("Opal,self", "return " + compiled)(Opal, self);}, {$$arity: 0, $$s: self});
       } else if ($truthy(args['$any?']())) {
-        $$($nesting, 'Kernel').$raise($$($nesting, 'ArgumentError'), "" + ("" + "wrong number of arguments (" + (args.$size()) + " for 0)") + "\n\n  NOTE:If you want to enable passing a String argument please add \"require 'opal-parser'\" to your script\n")};
+        $Kernel.$raise($$$('ArgumentError'), "" + ("wrong number of arguments (" + (args.$size()) + " for 0)") + "\n\n  NOTE:If you want to enable passing a String argument please add \"require 'opal-parser'\" to your script\n")
+      };
       
       var old = block.$$s,
           result;
@@ -3592,23 +3811,21 @@ Opal.modules["corelib/module"] = function(Opal) {
 
       return result;
     ;
-    }, $Module_module_eval$47.$$arity = -1);
-    $alias(self, "class_eval", "module_eval");
+    }, -1);
     
-    Opal.def(self, '$module_exec', $Module_module_exec$49 = function $$module_exec($a) {
-      var $iter = $Module_module_exec$49.$$p, block = $iter || nil, $post_args, args, self = this;
+    $def(self, '$module_exec', function $$module_exec($a) {
+      var block = $$module_exec.$$p || nil, $post_args, args, self = this;
 
-      if ($iter) $Module_module_exec$49.$$p = null;
+      delete $$module_exec.$$p;
       
+      ;
       
-      if ($iter) $Module_module_exec$49.$$p = null;;
-      
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
       
       if (block === nil) {
-        self.$raise($$($nesting, 'LocalJumpError'), "no block given")
+        $Kernel.$raise($$$('LocalJumpError'), "no block given")
       }
 
       var block_self = block.$$s, result;
@@ -3619,29 +3836,29 @@ Opal.modules["corelib/module"] = function(Opal) {
 
       return result;
     ;
-    }, $Module_module_exec$49.$$arity = -1);
-    $alias(self, "class_exec", "module_exec");
+    }, -1);
     
-    Opal.def(self, '$method_defined?', $Module_method_defined$ques$50 = function(method) {
+    $def(self, '$method_defined?', function $Module_method_defined$ques$15(method) {
       var self = this;
 
       
       var body = self.$$prototype['$' + method];
       return (!!body) && !body.$$stub;
     
-    }, $Module_method_defined$ques$50.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$module_function', $Module_module_function$51 = function $$module_function($a) {
+    $def(self, '$module_function', function $$module_function($a) {
       var $post_args, methods, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       methods = $post_args;;
       
       if (methods.length === 0) {
         self.$$module_function = true;
+        return nil;
       }
       else {
         for (var i = 0, length = methods.length; i < length; i++) {
@@ -3651,13 +3868,14 @@ Opal.modules["corelib/module"] = function(Opal) {
 
           Opal.defs(self, id, func);
         }
+        return methods.length === 1 ? methods[0] : methods;
       }
 
       return self;
     ;
-    }, $Module_module_function$51.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$name', $Module_name$52 = function $$name() {
+    $def(self, '$name', function $$name() {
       var self = this;
 
       
@@ -3675,7 +3893,7 @@ Opal.modules["corelib/module"] = function(Opal) {
 
         base = base.$$base_module;
 
-        if (base === Opal.Object) {
+        if (base === $Object) {
           break;
         }
       }
@@ -3686,26 +3904,26 @@ Opal.modules["corelib/module"] = function(Opal) {
 
       return self.$$full_name = result.join('::');
     
-    }, $Module_name$52.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$prepend', $Module_prepend$53 = function $$prepend($a) {
+    $def(self, '$prepend', function $$prepend($a) {
       var $post_args, mods, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       mods = $post_args;;
       
       if (mods.length === 0) {
-        self.$raise($$($nesting, 'ArgumentError'), "wrong number of arguments (given 0, expected 1+)")
+        $Kernel.$raise($$$('ArgumentError'), "wrong number of arguments (given 0, expected 1+)")
       }
 
       for (var i = mods.length - 1; i >= 0; i--) {
         var mod = mods[i];
 
         if (!mod.$$is_module) {
-          self.$raise($$($nesting, 'TypeError'), "" + "wrong argument type " + ((mod).$class()) + " (expected Module)");
+          $Kernel.$raise($$$('TypeError'), "wrong argument type " + ((mod).$class()) + " (expected Module)");
         }
 
         (mod).$prepend_features(self);
@@ -3713,51 +3931,49 @@ Opal.modules["corelib/module"] = function(Opal) {
       }
     ;
       return self;
-    }, $Module_prepend$53.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$prepend_features', $Module_prepend_features$54 = function $$prepend_features(prepender) {
+    $def(self, '$prepend_features', function $$prepend_features(prepender) {
       var self = this;
 
       
       
       if (!self.$$is_module) {
-        self.$raise($$($nesting, 'TypeError'), "" + "wrong argument type " + (self.$class()) + " (expected Module)");
+        $Kernel.$raise($$$('TypeError'), "wrong argument type " + (self.$class()) + " (expected Module)");
       }
 
       Opal.prepend_features(self, prepender)
     ;
       return self;
-    }, $Module_prepend_features$54.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$prepended', $Module_prepended$55 = function $$prepended(mod) {
-      var self = this;
-
+    $def(self, '$prepended', function $$prepended(mod) {
+      
       return nil
-    }, $Module_prepended$55.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$remove_const', $Module_remove_const$56 = function $$remove_const(name) {
+    $def(self, '$remove_const', function $$remove_const(name) {
       var self = this;
 
       return Opal.const_remove(self, name);
-    }, $Module_remove_const$56.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$to_s', $Module_to_s$57 = function $$to_s() {
-      var self = this, $ret_or_7 = nil;
+    $def(self, '$to_s', function $$to_s() {
+      var self = this, $ret_or_1 = nil;
 
-      if ($truthy(($ret_or_7 = Opal.Module.$name.call(self)))) {
-        return $ret_or_7
+      if ($truthy(($ret_or_1 = Opal.Module.$name.call(self)))) {
+        return $ret_or_1
       } else {
-        return "" + "#<" + (self.$$is_module ? 'Module' : 'Class') + ":0x" + (self.$__id__().$to_s(16)) + ">"
+        return "#<" + (self.$$is_module ? 'Module' : 'Class') + ":0x" + (self.$__id__().$to_s(16)) + ">"
       }
-    }, $Module_to_s$57.$$arity = 0);
-    $alias(self, "inspect", "to_s");
+    }, 0);
     
-    Opal.def(self, '$undef_method', $Module_undef_method$58 = function $$undef_method($a) {
+    $def(self, '$undef_method', function $$undef_method($a) {
       var $post_args, names, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       names = $post_args;;
       
@@ -3766,9 +3982,9 @@ Opal.modules["corelib/module"] = function(Opal) {
       }
     ;
       return self;
-    }, $Module_undef_method$58.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$instance_variables', $Module_instance_variables$59 = function $$instance_variables() {
+    $def(self, '$instance_variables', function $$instance_variables() {
       var self = this, consts = nil;
 
       
@@ -3784,24 +4000,20 @@ Opal.modules["corelib/module"] = function(Opal) {
 
       return result;
     ;
-    }, $Module_instance_variables$59.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$dup', $Module_dup$60 = function $$dup() {
-      var $iter = $Module_dup$60.$$p, $yield = $iter || nil, self = this, copy = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+    $def(self, '$dup', function $$dup() {
+      var $yield = $$dup.$$p || nil, self = this, copy = nil;
 
-      if ($iter) $Module_dup$60.$$p = null;
-      // Prepare super implicit arguments
-      for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-        $zuper[$zuper_i] = arguments[$zuper_i];
-      }
+      delete $$dup.$$p;
       
-      copy = $send2(self, $find_super(self, 'dup', $Module_dup$60, false, true), 'dup', $zuper, $iter);
+      copy = $send2(self, $find_super(self, 'dup', $$dup, false, true), 'dup', [], $yield);
       copy.$copy_class_variables(self);
       copy.$copy_constants(self);
       return copy;
-    }, $Module_dup$60.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$copy_class_variables', $Module_copy_class_variables$61 = function $$copy_class_variables(other) {
+    $def(self, '$copy_class_variables', function $$copy_class_variables(other) {
       var self = this;
 
       
@@ -3809,78 +4021,92 @@ Opal.modules["corelib/module"] = function(Opal) {
         self.$$cvars[name] = other.$$cvars[name];
       }
     
-    }, $Module_copy_class_variables$61.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$copy_constants', $Module_copy_constants$62 = function $$copy_constants(other) {
+    $def(self, '$copy_constants', function $$copy_constants(other) {
       var self = this;
 
       
       var name, other_constants = other.$$const;
 
       for (name in other_constants) {
-        Opal.const_set(self, name, other_constants[name]);
+        $const_set(self, name, other_constants[name]);
       }
     
-    }, $Module_copy_constants$62.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$refine', $Module_refine$63 = function $$refine(mod) {
-      var $iter = $Module_refine$63.$$p, block = $iter || nil, $a, $$64, self = this, s = nil, m = nil, mod_id = nil;
+    $def(self, '$refine', function $$refine(klass) {
+      var block = $$refine.$$p || nil, $a, self = this, refinement_module = nil, m = nil, klass_id = nil;
 
-      if ($iter) $Module_refine$63.$$p = null;
-      
+      delete $$refine.$$p;
       
-      if ($iter) $Module_refine$63.$$p = null;;
-      $a = [self, nil, nil], (s = $a[0]), (m = $a[1]), (mod_id = $a[2]), $a;
+      ;
+      $a = [self, nil, nil], (refinement_module = $a[0]), (m = $a[1]), (klass_id = $a[2]), $a;
       
-      mod_id = Opal.id(mod);
+      klass_id = Opal.id(klass);
       if (typeof self.$$refine_modules === "undefined") {
         self.$$refine_modules = {};
       }
-      if (typeof self.$$refine_modules[mod_id] === "undefined") {
-        m = self.$$refine_modules[mod_id] = $$$('::', 'Module').$new();
+      if (typeof self.$$refine_modules[klass_id] === "undefined") {
+        m = self.$$refine_modules[klass_id] = $$$('Refinement').$new();
       }
       else {
-        m = self.$$refine_modules[mod_id];
+        m = self.$$refine_modules[klass_id];
       }
+      m.refinement_module = refinement_module
+      m.refined_class = klass
     ;
-      $send(m, 'define_singleton_method', ["inspect"], ($$64 = function(){var self = $$64.$$s == null ? this : $$64.$$s;
-
-        return "" + "#<refinement:" + (mod.$inspect()) + "@" + (s.$inspect()) + ">"}, $$64.$$s = self, $$64.$$arity = 0, $$64));
       $send(m, 'class_exec', [], block.$to_proc());
       return m;
-    }, $Module_refine$63.$$arity = 1);
-    return (Opal.def(self, '$using', $Module_using$65 = function $$using(mod) {
-      var self = this;
+    }, 1);
+    
+    $def(self, '$using', function $$using(mod) {
+      
+      return $Kernel.$raise("Module#using is not permitted in methods")
+    }, 1);
+    $alias(self, "class_eval", "module_eval");
+    $alias(self, "class_exec", "module_exec");
+    return $alias(self, "inspect", "to_s");
+  })('::', null, $nesting);
+  return (function($base, $super) {
+    var self = $klass($base, $super, 'Refinement');
 
-      return self.$raise("Module#using is not permitted in methods")
-    }, $Module_using$65.$$arity = 1), nil) && 'using';
-  })($nesting[0], null, $nesting)
+    var $proto = self.$$prototype;
+
+    $proto.refinement_module = $proto.refined_class = nil;
+    return $def(self, '$inspect', function $$inspect() {
+      var $yield = $$inspect.$$p || nil, self = this;
+
+      delete $$inspect.$$p;
+      if ($truthy(self.refinement_module)) {
+        return "#<refinement:" + (self.refined_class.$inspect()) + "@" + (self.refinement_module.$inspect()) + ">"
+      } else {
+        return $send2(self, $find_super(self, 'inspect', $$inspect, false, true), 'inspect', [], $yield)
+      }
+    }, 0)
+  })('::', $Module);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/class"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $send = Opal.send, $send2 = Opal.send2, $find_super = Opal.find_super, $alias = Opal.alias;
+Opal.modules["corelib/class"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $klass = Opal.klass, $send = Opal.send, $defs = Opal.defs, $def = Opal.def, $rb_plus = Opal.rb_plus, $send2 = Opal.send2, $find_super = Opal.find_super, $alias = Opal.alias;
 
-  Opal.add_stubs(['$require', '$class_eval', '$to_proc', '$initialize_copy', '$allocate', '$name', '$to_s']);
+  Opal.add_stubs('require,class_eval,to_proc,+,subclasses,flatten,map,initialize_copy,allocate,name,to_s');
   
   self.$require("corelib/module");
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Class');
 
-    var $nesting = [self].concat($parent_nesting), $Class_new$1, $Class_allocate$2, $Class_inherited$3, $Class_initialize_dup$4, $Class_new$5, $Class_superclass$6, $Class_to_s$7;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
-    Opal.defs(self, '$new', $Class_new$1 = function(superclass) {
-      var $iter = $Class_new$1.$$p, block = $iter || nil, self = this;
+    $defs(self, '$new', function $Class_new$1(superclass) {
+      var block = $Class_new$1.$$p || nil;
 
-      if ($iter) $Class_new$1.$$p = null;
-      
+      delete $Class_new$1.$$p;
       
-      if ($iter) $Class_new$1.$$p = null;;
+      ;
       
-      if (superclass == null) {
-        superclass = $$($nesting, 'Object');
-      };
+      if (superclass == null) superclass = $$('Object');;
       
       if (!superclass.$$is_class) {
         throw Opal.TypeError.$new("superclass must be a Class");
@@ -3888,16 +4114,12 @@ Opal.modules["corelib/class"] = function(Opal) {
 
       var klass = Opal.allocate_class(nil, superclass);
       superclass.$inherited(klass);
-      (function() {if ((block !== nil)) {
-        return $send((klass), 'class_eval', [], block.$to_proc())
-      } else {
-        return nil
-      }; return nil; })()
+      ((block !== nil) ? ($send((klass), 'class_eval', [], block.$to_proc())) : nil)
       return klass;
     ;
-    }, $Class_new$1.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$allocate', $Class_allocate$2 = function $$allocate() {
+    $def(self, '$allocate', function $$allocate() {
       var self = this;
 
       
@@ -3905,15 +4127,20 @@ Opal.modules["corelib/class"] = function(Opal) {
       obj.$$id = Opal.uid();
       return obj;
     
-    }, $Class_allocate$2.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$inherited', $Class_inherited$3 = function $$inherited(cls) {
+    $def(self, '$descendants', function $$descendants() {
       var self = this;
 
+      return $rb_plus(self.$subclasses(), $send(self.$subclasses(), 'map', [], "descendants".$to_proc()).$flatten())
+    }, 0);
+    
+    $def(self, '$inherited', function $$inherited(cls) {
+      
       return nil
-    }, $Class_inherited$3.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$initialize_dup', $Class_initialize_dup$4 = function $$initialize_dup(original) {
+    $def(self, '$initialize_dup', function $$initialize_dup(original) {
       var self = this;
 
       
@@ -3922,17 +4149,16 @@ Opal.modules["corelib/class"] = function(Opal) {
       self.$$name = null;
       self.$$full_name = null;
     ;
-    }, $Class_initialize_dup$4.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$new', $Class_new$5 = function($a) {
-      var $iter = $Class_new$5.$$p, block = $iter || nil, $post_args, args, self = this;
+    $def(self, '$new', function $Class_new$2($a) {
+      var block = $Class_new$2.$$p || nil, $post_args, args, self = this;
 
-      if ($iter) $Class_new$5.$$p = null;
+      delete $Class_new$2.$$p;
       
+      ;
       
-      if ($iter) $Class_new$5.$$p = null;;
-      
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
       
@@ -3940,96 +4166,119 @@ Opal.modules["corelib/class"] = function(Opal) {
       Opal.send(object, object.$initialize, args, block);
       return object;
     ;
-    }, $Class_new$5.$$arity = -1);
+    }, -1);
+    
+    $def(self, '$subclasses', function $$subclasses() {
+      var self = this;
+
+      
+      if (typeof WeakRef !== 'undefined') {
+        var i, subclass, out = [];
+        for (i = 0; i < self.$$subclasses.length; i++) {
+          subclass = self.$$subclasses[i].deref();
+          if (subclass !== undefined) {
+            out.push(subclass);
+          }
+        }
+        return out;
+      }
+      else {
+        return self.$$subclasses;
+      }
+    
+    }, 0);
     
-    Opal.def(self, '$superclass', $Class_superclass$6 = function $$superclass() {
+    $def(self, '$superclass', function $$superclass() {
       var self = this;
 
       return self.$$super || nil;
-    }, $Class_superclass$6.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_s', $Class_to_s$7 = function $$to_s() {
-      var $iter = $Class_to_s$7.$$p, $yield = $iter || nil, self = this;
+    $def(self, '$to_s', function $$to_s() {
+      var $yield = $$to_s.$$p || nil, self = this;
 
-      if ($iter) $Class_to_s$7.$$p = null;
+      delete $$to_s.$$p;
       
       var singleton_of = self.$$singleton_of;
 
       if (singleton_of && singleton_of.$$is_a_module) {
-        return "" + "#<Class:" + ((singleton_of).$name()) + ">";
+        return "#<Class:" + ((singleton_of).$name()) + ">";
       }
       else if (singleton_of) {
         // a singleton class created from an object
-        return "" + "#<Class:#<" + ((singleton_of.$$class).$name()) + ":0x" + ((Opal.id(singleton_of)).$to_s(16)) + ">>";
+        return "#<Class:#<" + ((singleton_of.$$class).$name()) + ":0x" + ((Opal.id(singleton_of)).$to_s(16)) + ">>";
       }
 
-      return $send2(self, $find_super(self, 'to_s', $Class_to_s$7, false, true), 'to_s', [], null);
+      return $send2(self, $find_super(self, 'to_s', $$to_s, false, true), 'to_s', [], null);
     
-    }, $Class_to_s$7.$$arity = 0);
+    }, 0);
     return $alias(self, "inspect", "to_s");
-  })($nesting[0], null, $nesting);
+  })('::', null, $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/basic_object"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $alias = Opal.alias, $truthy = Opal.truthy, $range = Opal.range, $hash2 = Opal.hash2, $send = Opal.send;
+Opal.modules["corelib/basic_object"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  "use strict";
+  var nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $def = Opal.def, $alias = Opal.alias, $truthy = Opal.truthy, $range = Opal.range, $Kernel = Opal.Kernel, $to_a = Opal.to_a, $hash2 = Opal.hash2, $Opal = Opal.Opal, $send = Opal.send, $eqeq = Opal.eqeq, $rb_ge = Opal.rb_ge;
 
-  Opal.add_stubs(['$==', '$!', '$nil?', '$cover?', '$size', '$raise', '$merge', '$compile', '$proc', '$any?', '$inspect', '$new']);
-  return (function($base, $super, $parent_nesting) {
+  Opal.add_stubs('==,raise,inspect,!,nil?,cover?,size,merge,compile,proc,[],first,>=,length,instance_variable_get,any?,new,caller,pristine');
+  return (function($base, $super) {
     var self = $klass($base, $super, 'BasicObject');
 
-    var $nesting = [self].concat($parent_nesting), $BasicObject_initialize$1, $BasicObject_$eq_eq$2, $BasicObject_eql$ques$3, $BasicObject___id__$4, $BasicObject___send__$5, $BasicObject_$excl$6, $BasicObject_$not_eq$7, $BasicObject_instance_eval$8, $BasicObject_instance_exec$10, $BasicObject_singleton_method_added$11, $BasicObject_singleton_method_removed$12, $BasicObject_singleton_method_undefined$13, $BasicObject_method_missing$14, $BasicObject_respond_to_missing$ques$15;
-
     
     
-    Opal.def(self, '$initialize', $BasicObject_initialize$1 = function $$initialize($a) {
-      var $post_args, self = this;
+    
+    $def(self, '$initialize', function $$initialize($a) {
+      var $post_args, $rest_arg;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
-      ;
+      $post_args = Opal.slice.call(arguments);
+      
+      $rest_arg = $post_args;;
       return nil;
-    }, $BasicObject_initialize$1.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$==', $BasicObject_$eq_eq$2 = function(other) {
+    $def(self, '$==', function $BasicObject_$eq_eq$1(other) {
       var self = this;
 
       return self === other;
-    }, $BasicObject_$eq_eq$2.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$eql?', $BasicObject_eql$ques$3 = function(other) {
+    $def(self, '$eql?', function $BasicObject_eql$ques$2(other) {
       var self = this;
 
       return self['$=='](other)
-    }, $BasicObject_eql$ques$3.$$arity = 1);
+    }, 1);
     $alias(self, "equal?", "==");
     
-    Opal.def(self, '$__id__', $BasicObject___id__$4 = function $$__id__() {
+    $def(self, '$__id__', function $$__id__() {
       var self = this;
 
       
       if (self.$$id != null) {
         return self.$$id;
       }
-      Opal.defineProperty(self, '$$id', Opal.uid());
+      Opal.prop(self, '$$id', Opal.uid());
       return self.$$id;
     
-    }, $BasicObject___id__$4.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$__send__', $BasicObject___send__$5 = function $$__send__(symbol, $a) {
-      var $iter = $BasicObject___send__$5.$$p, block = $iter || nil, $post_args, args, self = this;
+    $def(self, '$__send__', function $$__send__(symbol, $a) {
+      var block = $$__send__.$$p || nil, $post_args, args, self = this;
 
-      if ($iter) $BasicObject___send__$5.$$p = null;
-      
+      delete $$__send__.$$p;
       
-      if ($iter) $BasicObject___send__$5.$$p = null;;
+      ;
       
-      $post_args = Opal.slice.call(arguments, 1, arguments.length);
+      $post_args = Opal.slice.call(arguments, 1);
       
       args = $post_args;;
       
-      var func = self['$' + symbol]
+      if (!symbol.$$is_string) {
+        self.$raise($$$('TypeError'), "" + (self.$inspect()) + " is not a symbol nor a string")
+      }
+
+      var func = self['$' + symbol];
 
       if (func) {
         if (block !== nil) {
@@ -4045,58 +4294,46 @@ Opal.modules["corelib/basic_object"] = function(Opal) {
 
       return self.$method_missing.apply(self, [symbol].concat(args));
     ;
-    }, $BasicObject___send__$5.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$!', $BasicObject_$excl$6 = function() {
-      var self = this;
-
+    $def(self, '$!', function $BasicObject_$excl$3() {
+      
       return false
-    }, $BasicObject_$excl$6.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$!=', $BasicObject_$not_eq$7 = function(other) {
+    $def(self, '$!=', function $BasicObject_$not_eq$4(other) {
       var self = this;
 
       return self['$=='](other)['$!']()
-    }, $BasicObject_$not_eq$7.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$instance_eval', $BasicObject_instance_eval$8 = function $$instance_eval($a) {
-      var $iter = $BasicObject_instance_eval$8.$$p, block = $iter || nil, $post_args, args, $b, $$9, self = this, $ret_or_1 = nil, string = nil, file = nil, _lineno = nil, default_eval_options = nil, $ret_or_2 = nil, compiling_options = nil, compiled = nil;
+    $def(self, '$instance_eval', function $$instance_eval($a) {
+      var block = $$instance_eval.$$p || nil, $post_args, args, $b, self = this, string = nil, file = nil, _lineno = nil, default_eval_options = nil, $ret_or_1 = nil, compiling_options = nil, compiled = nil;
 
-      if ($iter) $BasicObject_instance_eval$8.$$p = null;
+      delete $$instance_eval.$$p;
       
+      ;
       
-      if ($iter) $BasicObject_instance_eval$8.$$p = null;;
-      
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
-      if ($truthy((function() {if ($truthy(($ret_or_1 = block['$nil?']()))) {
-        return !!Opal.compile;
-      } else {
-        return $ret_or_1
-      }; return nil; })())) {
+      if (($truthy(block['$nil?']()) && ($truthy(!!Opal.compile)))) {
         
-        if ($truthy($range(1, 3, false)['$cover?'](args.$size()))) {
-        } else {
-          $$$('::', 'Kernel').$raise($$$('::', 'ArgumentError'), "wrong number of arguments (0 for 1..3)")
+        if (!$truthy($range(1, 3, false)['$cover?'](args.$size()))) {
+          $Kernel.$raise($$$('ArgumentError'), "wrong number of arguments (0 for 1..3)")
         };
-        $b = [].concat(Opal.to_a(args)), (string = ($b[0] == null ? nil : $b[0])), (file = ($b[1] == null ? nil : $b[1])), (_lineno = ($b[2] == null ? nil : $b[2])), $b;
-        default_eval_options = $hash2(["file", "eval"], {"file": (function() {if ($truthy(($ret_or_2 = file))) {
-          return $ret_or_2
-        } else {
-          return "(eval)"
-        }; return nil; })(), "eval": true});
+        $b = [].concat($to_a(args)), (string = ($b[0] == null ? nil : $b[0])), (file = ($b[1] == null ? nil : $b[1])), (_lineno = ($b[2] == null ? nil : $b[2])), $b;
+        default_eval_options = $hash2(["file", "eval"], {"file": ($truthy(($ret_or_1 = file)) ? ($ret_or_1) : ("(eval)")), "eval": true});
         compiling_options = Opal.hash({ arity_check: false }).$merge(default_eval_options);
-        compiled = $$$('::', 'Opal').$compile(string, compiling_options);
-        block = $send($$$('::', 'Kernel'), 'proc', [], ($$9 = function(){var self = $$9.$$s == null ? this : $$9.$$s;
+        compiled = $Opal.$compile(string, compiling_options);
+        block = $send($Kernel, 'proc', [], function $$5(){var self = $$5.$$s == null ? this : $$5.$$s;
 
-          
-          return (function(self) {
-            return eval(compiled);
-          })(self)
-        }, $$9.$$s = self, $$9.$$arity = 0, $$9));
+          return new Function("Opal,self", "return " + compiled)(Opal, self);}, {$$arity: 0, $$s: self});
+      } else if ((($truthy(block['$nil?']()) && ($truthy($rb_ge(args.$length(), 1)))) && ($eqeq(args.$first()['$[]'](0), "@")))) {
+        return self.$instance_variable_get(args.$first())
       } else if ($truthy(args['$any?']())) {
-        $$$('::', 'Kernel').$raise($$$('::', 'ArgumentError'), "" + "wrong number of arguments (" + (args.$size()) + " for 0)")};
+        $Kernel.$raise($$$('ArgumentError'), "wrong number of arguments (" + (args.$size()) + " for 0)")
+      };
       
       var old = block.$$s,
           result;
@@ -4123,22 +4360,20 @@ Opal.modules["corelib/basic_object"] = function(Opal) {
 
       return result;
     ;
-    }, $BasicObject_instance_eval$8.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$instance_exec', $BasicObject_instance_exec$10 = function $$instance_exec($a) {
-      var $iter = $BasicObject_instance_exec$10.$$p, block = $iter || nil, $post_args, args, self = this;
+    $def(self, '$instance_exec', function $$instance_exec($a) {
+      var block = $$instance_exec.$$p || nil, $post_args, args, self = this;
 
-      if ($iter) $BasicObject_instance_exec$10.$$p = null;
-      
+      delete $$instance_exec.$$p;
       
-      if ($iter) $BasicObject_instance_exec$10.$$p = null;;
+      ;
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
-      if ($truthy(block)) {
-      } else {
-        $$$('::', 'Kernel').$raise($$$('::', 'ArgumentError'), "no block given")
+      if (!$truthy(block)) {
+        $Kernel.$raise($$$('ArgumentError'), "no block given")
       };
       
       var block_self = block.$$s,
@@ -4163,118 +4398,90 @@ Opal.modules["corelib/basic_object"] = function(Opal) {
 
       return result;
     ;
-    }, $BasicObject_instance_exec$10.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$singleton_method_added', $BasicObject_singleton_method_added$11 = function $$singleton_method_added($a) {
-      var $post_args, self = this;
+    $def(self, '$singleton_method_added', function $$singleton_method_added($a) {
+      var $post_args, $rest_arg;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
-      ;
+      $post_args = Opal.slice.call(arguments);
+      
+      $rest_arg = $post_args;;
       return nil;
-    }, $BasicObject_singleton_method_added$11.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$singleton_method_removed', $BasicObject_singleton_method_removed$12 = function $$singleton_method_removed($a) {
-      var $post_args, self = this;
+    $def(self, '$singleton_method_removed', function $$singleton_method_removed($a) {
+      var $post_args, $rest_arg;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
-      ;
+      $post_args = Opal.slice.call(arguments);
+      
+      $rest_arg = $post_args;;
       return nil;
-    }, $BasicObject_singleton_method_removed$12.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$singleton_method_undefined', $BasicObject_singleton_method_undefined$13 = function $$singleton_method_undefined($a) {
-      var $post_args, self = this;
+    $def(self, '$singleton_method_undefined', function $$singleton_method_undefined($a) {
+      var $post_args, $rest_arg;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
-      ;
+      $post_args = Opal.slice.call(arguments);
+      
+      $rest_arg = $post_args;;
       return nil;
-    }, $BasicObject_singleton_method_undefined$13.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$method_missing', $BasicObject_method_missing$14 = function $$method_missing(symbol, $a) {
-      var $iter = $BasicObject_method_missing$14.$$p, block = $iter || nil, $post_args, args, self = this, message = nil;
+    $def(self, '$method_missing', function $$method_missing(symbol, $a) {
+      var block = $$method_missing.$$p || nil, $post_args, args, self = this, inspect_result = nil;
 
-      if ($iter) $BasicObject_method_missing$14.$$p = null;
-      
+      delete $$method_missing.$$p;
       
-      if ($iter) $BasicObject_method_missing$14.$$p = null;;
+      ;
       
-      $post_args = Opal.slice.call(arguments, 1, arguments.length);
+      $post_args = Opal.slice.call(arguments, 1);
       
       args = $post_args;;
-      message = (function() {if ($truthy(self.$inspect && !self.$inspect.$$stub)) {
-        return "" + "undefined method `" + (symbol) + "' for " + (self.$inspect()) + ":" + (self.$$class)
-      } else {
-        return "" + "undefined method `" + (symbol) + "' for " + (self.$$class)
-      }; return nil; })();
-      return $$$('::', 'Kernel').$raise($$$('::', 'NoMethodError').$new(message, symbol));
-    }, $BasicObject_method_missing$14.$$arity = -2);
-    return (Opal.def(self, '$respond_to_missing?', $BasicObject_respond_to_missing$ques$15 = function(method_name, include_all) {
-      var self = this;
-
+      inspect_result = $Opal.$inspect(self);
+      return $Kernel.$raise($$$('NoMethodError').$new("undefined method `" + (symbol) + "' for " + (inspect_result), symbol, args), nil, $Kernel.$caller(1));
+    }, -2);
+    $Opal.$pristine(self, "method_missing");
+    return $def(self, '$respond_to_missing?', function $BasicObject_respond_to_missing$ques$6(method_name, include_all) {
       
       
-      if (include_all == null) {
-        include_all = false;
-      };
+      
+      if (include_all == null) include_all = false;;
       return false;
-    }, $BasicObject_respond_to_missing$ques$15.$$arity = -2), nil) && 'respond_to_missing?';
-  })($nesting[0], null, $nesting)
+    }, -2);
+  })('::', null)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/kernel"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_le(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs <= rhs : lhs['$<='](rhs);
-  }
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $truthy = Opal.truthy, $coerce_to = Opal.coerce_to, $respond_to = Opal.respond_to, $module = Opal.module, $gvars = Opal.gvars, $hash2 = Opal.hash2, $send = Opal.send, $alias = Opal.alias, $klass = Opal.klass;
+Opal.modules["corelib/kernel"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  "use strict";
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $truthy = Opal.truthy, $coerce_to = Opal.coerce_to, $respond_to = Opal.respond_to, $Opal = Opal.Opal, $module = Opal.module, $def = Opal.def, $Kernel = Opal.Kernel, $gvars = Opal.gvars, $hash2 = Opal.hash2, $send = Opal.send, $to_a = Opal.to_a, $rb_plus = Opal.rb_plus, $eqeq = Opal.eqeq, $eqeqeq = Opal.eqeqeq, $rb_le = Opal.rb_le, $rb_lt = Opal.rb_lt, $Object = Opal.Object, $alias = Opal.alias, $klass = Opal.klass;
 
-  Opal.add_stubs(['$raise', '$new', '$inspect', '$caller', '$!', '$=~', '$==', '$object_id', '$class', '$coerce_to?', '$<<', '$allocate', '$copy_instance_variables', '$copy_singleton_methods', '$initialize_clone', '$initialize_copy', '$define_method', '$singleton_class', '$to_proc', '$initialize_dup', '$for', '$empty?', '$pop', '$call', '$append_features', '$extend_object', '$extended', '$__id__', '$each', '$instance_variables', '$+', '$instance_variable_get', '$to_s', '$instance_variable_name!', '$respond_to?', '$to_int', '$coerce_to!', '$Integer', '$nil?', '$===', '$enum_for', '$result', '$any?', '$print', '$format', '$puts', '$<=', '$length', '$[]', '$<', '$first', '$split', '$map', '$to_str', '$exception', '$backtrace', '$rand', '$respond_to_missing?', '$pristine', '$try_convert!', '$expand_path', '$join', '$start_with?', '$new_seed', '$srand', '$tag', '$value', '$open', '$include']);
+  Opal.add_stubs('!,=~,==,object_id,raise,new,class,coerce_to?,<<,allocate,copy_instance_variables,copy_singleton_methods,initialize_clone,initialize_copy,define_method,singleton_class,to_proc,initialize_dup,for,empty?,pop,call,append_features,extend_object,extended,gets,__id__,include?,each,instance_variables,instance_variable_get,inspect,+,to_s,instance_variable_name!,respond_to?,to_int,coerce_to!,Integer,nil?,===,enum_for,result,any?,print,format,puts,<=,length,[],readline,<,first,split,caller,map,to_str,exception,backtrace,rand,respond_to_missing?,pristine,try_convert!,expand_path,join,start_with?,new_seed,srand,tag,value,open,include');
   
   (function($base, $parent_nesting) {
     var self = $module($base, 'Kernel');
 
-    var $nesting = [self].concat($parent_nesting), $Kernel_method_missing$1, $Kernel_$eq_tilde$2, $Kernel_$excl_tilde$3, $Kernel_$eq_eq_eq$4, $Kernel_$lt_eq_gt$5, $Kernel_method$6, $Kernel_methods$7, $Kernel_public_methods$8, $Kernel_Array$9, $Kernel_at_exit$10, $Kernel_caller$11, $Kernel_class$12, $Kernel_copy_instance_variables$13, $Kernel_copy_singleton_methods$14, $Kernel_clone$15, $Kernel_initialize_clone$16, $Kernel_define_singleton_method$17, $Kernel_dup$18, $Kernel_initialize_dup$19, $Kernel_enum_for$20, $Kernel_equal$ques$21, $Kernel_exit$22, $Kernel_extend$23, $Kernel_hash$24, $Kernel_initialize_copy$25, $Kernel_inspect$26, $Kernel_instance_of$ques$28, $Kernel_instance_variable_defined$ques$29, $Kernel_instance_variable_get$30, $Kernel_instance_variable_set$31, $Kernel_remove_instance_variable$32, $Kernel_instance_variables$33, $Kernel_Integer$34, $Kernel_Float$35, $Kernel_Hash$36, $Kernel_is_a$ques$37, $Kernel_itself$38, $Kernel_lambda$39, $Kernel_load$40, $Kernel_loop$41, $Kernel_nil$ques$43, $Kernel_printf$44, $Kernel_proc$45, $Kernel_puts$46, $Kernel_p$47, $Kernel_print$49, $Kernel_warn$50, $Kernel_raise$52, $Kernel_rand$53, $Kernel_respond_to$ques$54, $Kernel_respond_to_missing$ques$55, $Kernel_require$56, $Kernel_require_relative$57, $Kernel_require_tree$58, $Kernel_singleton_class$59, $Kernel_sleep$60, $Kernel_srand$61, $Kernel_String$62, $Kernel_tap$63, $Kernel_to_proc$64, $Kernel_to_s$65, $Kernel_catch$66, $Kernel_throw$67, $Kernel_open$68, $Kernel_yield_self$69;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
     
-    Opal.def(self, '$method_missing', $Kernel_method_missing$1 = function $$method_missing(symbol, $a) {
-      var $iter = $Kernel_method_missing$1.$$p, block = $iter || nil, $post_args, args, self = this;
-
-      if ($iter) $Kernel_method_missing$1.$$p = null;
+    $def(self, '$=~', function $Kernel_$eq_tilde$1(obj) {
       
-      
-      if ($iter) $Kernel_method_missing$1.$$p = null;;
-      
-      $post_args = Opal.slice.call(arguments, 1, arguments.length);
-      
-      args = $post_args;;
-      return self.$raise($$($nesting, 'NoMethodError').$new("" + "undefined method `" + (symbol) + "' for " + (self.$inspect()), symbol, args), nil, self.$caller(1));
-    }, $Kernel_method_missing$1.$$arity = -2);
-    
-    Opal.def(self, '$=~', $Kernel_$eq_tilde$2 = function(obj) {
-      var self = this;
-
       return false
-    }, $Kernel_$eq_tilde$2.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$!~', $Kernel_$excl_tilde$3 = function(obj) {
+    $def(self, '$!~', function $Kernel_$excl_tilde$2(obj) {
       var self = this;
 
       return self['$=~'](obj)['$!']()
-    }, $Kernel_$excl_tilde$3.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$===', $Kernel_$eq_eq_eq$4 = function(other) {
+    $def(self, '$===', function $Kernel_$eq_eq_eq$3(other) {
       var self = this, $ret_or_1 = nil;
 
       if ($truthy(($ret_or_1 = self.$object_id()['$=='](other.$object_id())))) {
@@ -4282,9 +4489,9 @@ Opal.modules["corelib/kernel"] = function(Opal) {
       } else {
         return self['$=='](other)
       }
-    }, $Kernel_$eq_eq_eq$4.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$<=>', $Kernel_$lt_eq_gt$5 = function(other) {
+    $def(self, '$<=>', function $Kernel_$lt_eq_gt$4(other) {
       var self = this;
 
       
@@ -4299,30 +4506,28 @@ Opal.modules["corelib/kernel"] = function(Opal) {
 
       return nil;
     
-    }, $Kernel_$lt_eq_gt$5.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$method', $Kernel_method$6 = function $$method(name) {
+    $def(self, '$method', function $$method(name) {
       var self = this;
 
       
       var meth = self['$' + name];
 
       if (!meth || meth.$$stub) {
-        self.$raise($$($nesting, 'NameError').$new("" + "undefined method `" + (name) + "' for class `" + (self.$class()) + "'", name));
+        $Kernel.$raise($$$('NameError').$new("undefined method `" + (name) + "' for class `" + (self.$class()) + "'", name));
       }
 
-      return $$($nesting, 'Method').$new(self, meth.$$owner || self.$class(), meth, name);
+      return $$$('Method').$new(self, meth.$$owner || self.$class(), meth, name);
     
-    }, $Kernel_method$6.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$methods', $Kernel_methods$7 = function $$methods(all) {
+    $def(self, '$methods', function $$methods(all) {
       var self = this;
 
       
       
-      if (all == null) {
-        all = true;
-      };
+      if (all == null) all = true;;
       
       if ($truthy(all)) {
         return Opal.methods(self);
@@ -4330,16 +4535,14 @@ Opal.modules["corelib/kernel"] = function(Opal) {
         return Opal.own_methods(self);
       }
     ;
-    }, $Kernel_methods$7.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$public_methods', $Kernel_public_methods$8 = function $$public_methods(all) {
+    $def(self, '$public_methods', function $$public_methods(all) {
       var self = this;
 
       
       
-      if (all == null) {
-        all = true;
-      };
+      if (all == null) all = true;;
       
       if ($truthy(all)) {
         return Opal.methods(self);
@@ -4347,11 +4550,10 @@ Opal.modules["corelib/kernel"] = function(Opal) {
         return Opal.receiver_methods(self);
       }
     ;
-    }, $Kernel_public_methods$8.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$Array', $Kernel_Array$9 = function $$Array(object) {
-      var self = this;
-
+    $def(self, '$Array', function $$Array(object) {
+      
       
       var coerced;
 
@@ -4363,45 +4565,35 @@ Opal.modules["corelib/kernel"] = function(Opal) {
         return object;
       }
 
-      coerced = $$($nesting, 'Opal')['$coerce_to?'](object, $$($nesting, 'Array'), "to_ary");
+      coerced = $Opal['$coerce_to?'](object, $$$('Array'), "to_ary");
       if (coerced !== nil) { return coerced; }
 
-      coerced = $$($nesting, 'Opal')['$coerce_to?'](object, $$($nesting, 'Array'), "to_a");
+      coerced = $Opal['$coerce_to?'](object, $$$('Array'), "to_a");
       if (coerced !== nil) { return coerced; }
 
       return [object];
     
-    }, $Kernel_Array$9.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$at_exit', $Kernel_at_exit$10 = function $$at_exit() {
-      var $iter = $Kernel_at_exit$10.$$p, block = $iter || nil, self = this, $ret_or_2 = nil;
+    $def(self, '$at_exit', function $$at_exit() {
+      var block = $$at_exit.$$p || nil, $ret_or_1 = nil;
       if ($gvars.__at_exit__ == null) $gvars.__at_exit__ = nil;
 
-      if ($iter) $Kernel_at_exit$10.$$p = null;
+      delete $$at_exit.$$p;
       
-      
-      if ($iter) $Kernel_at_exit$10.$$p = null;;
-      $gvars.__at_exit__ = (function() {if ($truthy(($ret_or_2 = $gvars.__at_exit__))) {
-        return $ret_or_2
-      } else {
-        return []
-      }; return nil; })();
+      ;
+      $gvars.__at_exit__ = ($truthy(($ret_or_1 = $gvars.__at_exit__)) ? ($ret_or_1) : ([]));
       $gvars.__at_exit__['$<<'](block);
       return block;
-    }, $Kernel_at_exit$10.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$caller', $Kernel_caller$11 = function $$caller(start, length) {
-      var self = this;
-
+    $def(self, '$caller', function $$caller(start, length) {
       
       
-      if (start == null) {
-        start = 1;
-      };
       
-      if (length == null) {
-        length = nil;
-      };
+      if (start == null) start = 1;;
+      
+      if (length == null) length = nil;;
       
       var stack, result;
 
@@ -4416,15 +4608,15 @@ Opal.modules["corelib/kernel"] = function(Opal) {
       if (length != nil) result = result.slice(0, length);
       return result;
     ;
-    }, $Kernel_caller$11.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$class', $Kernel_class$12 = function() {
+    $def(self, '$class', function $Kernel_class$5() {
       var self = this;
 
       return self.$$class;
-    }, $Kernel_class$12.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$copy_instance_variables', $Kernel_copy_instance_variables$13 = function $$copy_instance_variables(other) {
+    $def(self, '$copy_instance_variables', function $$copy_instance_variables(other) {
       var self = this;
 
       
@@ -4436,9 +4628,9 @@ Opal.modules["corelib/kernel"] = function(Opal) {
         }
       }
     
-    }, $Kernel_copy_instance_variables$13.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$copy_singleton_methods', $Kernel_copy_singleton_methods$14 = function $$copy_singleton_methods(other) {
+    $def(self, '$copy_singleton_methods', function $$copy_singleton_methods(other) {
       var self = this;
 
       
@@ -4470,9 +4662,9 @@ Opal.modules["corelib/kernel"] = function(Opal) {
         }
       }
     
-    }, $Kernel_copy_singleton_methods$14.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$clone', $Kernel_clone$15 = function $$clone($kwargs) {
+    $def(self, '$clone', function $$clone($kwargs) {
       var freeze, self = this, copy = nil;
 
       
@@ -4484,34 +4676,31 @@ Opal.modules["corelib/kernel"] = function(Opal) {
       };
       
       freeze = $kwargs.$$smap["freeze"];
-      if (freeze == null) {
-        freeze = true
-      };
+      if (freeze == null) freeze = true;
       copy = self.$class().$allocate();
       copy.$copy_instance_variables(self);
       copy.$copy_singleton_methods(self);
       copy.$initialize_clone(self);
       return copy;
-    }, $Kernel_clone$15.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$initialize_clone', $Kernel_initialize_clone$16 = function $$initialize_clone(other) {
+    $def(self, '$initialize_clone', function $$initialize_clone(other) {
       var self = this;
 
       return self.$initialize_copy(other)
-    }, $Kernel_initialize_clone$16.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$define_singleton_method', $Kernel_define_singleton_method$17 = function $$define_singleton_method(name, method) {
-      var $iter = $Kernel_define_singleton_method$17.$$p, block = $iter || nil, self = this;
+    $def(self, '$define_singleton_method', function $$define_singleton_method(name, method) {
+      var block = $$define_singleton_method.$$p || nil, self = this;
 
-      if ($iter) $Kernel_define_singleton_method$17.$$p = null;
-      
+      delete $$define_singleton_method.$$p;
       
-      if ($iter) $Kernel_define_singleton_method$17.$$p = null;;
+      ;
       ;
       return $send(self.$singleton_class(), 'define_method', [name, method], block.$to_proc());
-    }, $Kernel_define_singleton_method$17.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$dup', $Kernel_dup$18 = function $$dup() {
+    $def(self, '$dup', function $$dup() {
       var self = this, copy = nil;
 
       
@@ -4519,57 +4708,44 @@ Opal.modules["corelib/kernel"] = function(Opal) {
       copy.$copy_instance_variables(self);
       copy.$initialize_dup(self);
       return copy;
-    }, $Kernel_dup$18.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$initialize_dup', $Kernel_initialize_dup$19 = function $$initialize_dup(other) {
+    $def(self, '$initialize_dup', function $$initialize_dup(other) {
       var self = this;
 
       return self.$initialize_copy(other)
-    }, $Kernel_initialize_dup$19.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$enum_for', $Kernel_enum_for$20 = function $$enum_for($a, $b) {
-      var $iter = $Kernel_enum_for$20.$$p, block = $iter || nil, $post_args, method, args, self = this;
+    $def(self, '$enum_for', function $$enum_for($a, $b) {
+      var block = $$enum_for.$$p || nil, $post_args, method, args, self = this;
 
-      if ($iter) $Kernel_enum_for$20.$$p = null;
-      
+      delete $$enum_for.$$p;
       
-      if ($iter) $Kernel_enum_for$20.$$p = null;;
+      ;
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
-      if ($post_args.length > 0) {
-        method = $post_args[0];
-        $post_args.splice(0, 1);
-      }
-      if (method == null) {
-        method = "each";
-      };
+      if ($post_args.length > 0) method = $post_args.shift();
+      if (method == null) method = "each";;
       
       args = $post_args;;
-      return $send($$($nesting, 'Enumerator'), 'for', [self, method].concat(Opal.to_a(args)), block.$to_proc());
-    }, $Kernel_enum_for$20.$$arity = -1);
-    $alias(self, "to_enum", "enum_for");
+      return $send($$$('Enumerator'), 'for', [self, method].concat($to_a(args)), block.$to_proc());
+    }, -1);
     
-    Opal.def(self, '$equal?', $Kernel_equal$ques$21 = function(other) {
+    $def(self, '$equal?', function $Kernel_equal$ques$6(other) {
       var self = this;
 
       return self === other;
-    }, $Kernel_equal$ques$21.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$exit', $Kernel_exit$22 = function $$exit(status) {
-      var $a, self = this, $ret_or_3 = nil, block = nil;
+    $def(self, '$exit', function $$exit(status) {
+      var $a, $ret_or_1 = nil, block = nil;
       if ($gvars.__at_exit__ == null) $gvars.__at_exit__ = nil;
 
       
       
-      if (status == null) {
-        status = true;
-      };
-      $gvars.__at_exit__ = (function() {if ($truthy(($ret_or_3 = $gvars.__at_exit__))) {
-        return $ret_or_3
-      } else {
-        return []
-      }; return nil; })();
+      if (status == null) status = true;;
+      $gvars.__at_exit__ = ($truthy(($ret_or_1 = $gvars.__at_exit__)) ? ($ret_or_1) : ([]));
       while (!($truthy($gvars.__at_exit__['$empty?']()))) {
         
         block = $gvars.__at_exit__.$pop();
@@ -4579,20 +4755,20 @@ Opal.modules["corelib/kernel"] = function(Opal) {
       if (status.$$is_boolean) {
         status = status ? 0 : 1;
       } else {
-        status = $coerce_to(status, $$($nesting, 'Integer'), 'to_int')
+        status = $coerce_to(status, $$$('Integer'), 'to_int')
       }
 
       Opal.exit(status);
     ;
       return nil;
-    }, $Kernel_exit$22.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$extend', $Kernel_extend$23 = function $$extend($a) {
+    $def(self, '$extend', function $$extend($a) {
       var $post_args, mods, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       mods = $post_args;;
       
@@ -4602,7 +4778,7 @@ Opal.modules["corelib/kernel"] = function(Opal) {
         var mod = mods[i];
 
         if (!mod.$$is_module) {
-          self.$raise($$($nesting, 'TypeError'), "" + "wrong argument type " + ((mod).$class()) + " (expected Module)");
+          $Kernel.$raise($$$('TypeError'), "wrong argument type " + ((mod).$class()) + " (expected Module)");
         }
 
         (mod).$append_features(singleton);
@@ -4611,81 +4787,113 @@ Opal.modules["corelib/kernel"] = function(Opal) {
       }
     ;
       return self;
-    }, $Kernel_extend$23.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$hash', $Kernel_hash$24 = function $$hash() {
-      var self = this;
+    $def(self, '$gets', function $$gets($a) {
+      var $post_args, args;
+      if ($gvars.stdin == null) $gvars.stdin = nil;
 
-      return self.$__id__()
-    }, $Kernel_hash$24.$$arity = 0);
+      
+      
+      $post_args = Opal.slice.call(arguments);
+      
+      args = $post_args;;
+      return $send($gvars.stdin, 'gets', $to_a(args));
+    }, -1);
     
-    Opal.def(self, '$initialize_copy', $Kernel_initialize_copy$25 = function $$initialize_copy(other) {
+    $def(self, '$hash', function $$hash() {
       var self = this;
 
-      return nil
-    }, $Kernel_initialize_copy$25.$$arity = 1);
+      return self.$__id__()
+    }, 0);
     
-    Opal.def(self, '$inspect', $Kernel_inspect$26 = function $$inspect() {
-      var $$27, self = this, ivs = nil;
-
+    $def(self, '$initialize_copy', function $$initialize_copy(other) {
       
-      ivs = "";
-      $send(self.$instance_variables(), 'each', [], ($$27 = function(i){var self = $$27.$$s == null ? this : $$27.$$s;
+      return nil
+    }, 1);
+    var inspect_stack = [];
+    
+    $def(self, '$inspect', function $$inspect() {
+      var self = this, ivs = nil, id = nil, pushed = nil, e = nil;
 
+      return (function() { try {
+      try {
         
-        
-        if (i == null) {
-          i = nil;
+        ivs = "";
+        id = self.$__id__();
+        if ($truthy((inspect_stack)['$include?'](id))) {
+          ivs = " ..."
+        } else {
+          
+          (inspect_stack)['$<<'](id);
+          pushed = true;
+          $send(self.$instance_variables(), 'each', [], function $$7(i){var self = $$7.$$s == null ? this : $$7.$$s, ivar = nil, inspect = nil;
+
+            
+            
+            if (i == null) i = nil;;
+            ivar = self.$instance_variable_get(i);
+            inspect = $$('Opal').$inspect(ivar);
+            return (ivs = $rb_plus(ivs, " " + (i) + "=" + (inspect)));}, {$$arity: 1, $$s: self});
         };
-        return (ivs = $rb_plus(ivs, "" + " " + (i) + "=" + (self.$instance_variable_get(i))));}, $$27.$$s = self, $$27.$$arity = 1, $$27));
-      return "" + "#<" + (self.$class()) + ":0x" + (self.$__id__().$to_s(16)) + (ivs) + ">";
-    }, $Kernel_inspect$26.$$arity = 0);
+        return "#<" + (self.$class()) + ":0x" + (id.$to_s(16)) + (ivs) + ">";
+      } catch ($err) {
+        if (Opal.rescue($err, [$$('StandardError')])) {(e = $err)
+          try {
+            return "#<" + (self.$class()) + ":0x" + (id.$to_s(16)) + ">"
+          } finally { Opal.pop_exception(); }
+        } else { throw $err; }
+      }
+      } finally {
+        ($truthy(pushed) ? ((inspect_stack).$pop()) : nil)
+      }; })()
+    }, 0);
     
-    Opal.def(self, '$instance_of?', $Kernel_instance_of$ques$28 = function(klass) {
+    $def(self, '$instance_of?', function $Kernel_instance_of$ques$8(klass) {
       var self = this;
 
       
       if (!klass.$$is_class && !klass.$$is_module) {
-        self.$raise($$($nesting, 'TypeError'), "class or module required");
+        $Kernel.$raise($$$('TypeError'), "class or module required");
       }
 
       return self.$$class === klass;
     
-    }, $Kernel_instance_of$ques$28.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$instance_variable_defined?', $Kernel_instance_variable_defined$ques$29 = function(name) {
+    $def(self, '$instance_variable_defined?', function $Kernel_instance_variable_defined$ques$9(name) {
       var self = this;
 
       
-      name = $$($nesting, 'Opal')['$instance_variable_name!'](name);
+      name = $Opal['$instance_variable_name!'](name);
       return Opal.hasOwnProperty.call(self, name.substr(1));;
-    }, $Kernel_instance_variable_defined$ques$29.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$instance_variable_get', $Kernel_instance_variable_get$30 = function $$instance_variable_get(name) {
+    $def(self, '$instance_variable_get', function $$instance_variable_get(name) {
       var self = this;
 
       
-      name = $$($nesting, 'Opal')['$instance_variable_name!'](name);
+      name = $Opal['$instance_variable_name!'](name);
       
       var ivar = self[Opal.ivar(name.substr(1))];
 
       return ivar == null ? nil : ivar;
     ;
-    }, $Kernel_instance_variable_get$30.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$instance_variable_set', $Kernel_instance_variable_set$31 = function $$instance_variable_set(name, value) {
+    $def(self, '$instance_variable_set', function $$instance_variable_set(name, value) {
       var self = this;
 
       
-      name = $$($nesting, 'Opal')['$instance_variable_name!'](name);
+      name = $Opal['$instance_variable_name!'](name);
       return self[Opal.ivar(name.substr(1))] = value;;
-    }, $Kernel_instance_variable_set$31.$$arity = 2);
+    }, 2);
     
-    Opal.def(self, '$remove_instance_variable', $Kernel_remove_instance_variable$32 = function $$remove_instance_variable(name) {
+    $def(self, '$remove_instance_variable', function $$remove_instance_variable(name) {
       var self = this;
 
       
-      name = $$($nesting, 'Opal')['$instance_variable_name!'](name);
+      name = $Opal['$instance_variable_name!'](name);
       
       var key = Opal.ivar(name.substr(1)),
           val;
@@ -4695,10 +4903,10 @@ Opal.modules["corelib/kernel"] = function(Opal) {
         return val;
       }
     ;
-      return self.$raise($$($nesting, 'NameError'), "" + "instance variable " + (name) + " not defined");
-    }, $Kernel_remove_instance_variable$32.$$arity = 1);
+      return $Kernel.$raise($$$('NameError'), "instance variable " + (name) + " not defined");
+    }, 1);
     
-    Opal.def(self, '$instance_variables', $Kernel_instance_variables$33 = function $$instance_variables() {
+    $def(self, '$instance_variables', function $$instance_variables() {
       var self = this;
 
       
@@ -4717,11 +4925,10 @@ Opal.modules["corelib/kernel"] = function(Opal) {
 
       return result;
     
-    }, $Kernel_instance_variables$33.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$Integer', $Kernel_Integer$34 = function $$Integer(value, base) {
-      var self = this;
-
+    $def(self, '$Integer', function $$Integer(value, base) {
+      
       
       ;
       
@@ -4729,14 +4936,14 @@ Opal.modules["corelib/kernel"] = function(Opal) {
 
       if (!value.$$is_string) {
         if (base !== undefined) {
-          self.$raise($$($nesting, 'ArgumentError'), "base specified for non string value")
+          $Kernel.$raise($$$('ArgumentError'), "base specified for non string value")
         }
         if (value === nil) {
-          self.$raise($$($nesting, 'TypeError'), "can't convert nil into Integer")
+          $Kernel.$raise($$$('TypeError'), "can't convert nil into Integer")
         }
         if (value.$$is_number) {
           if (value === Infinity || value === -Infinity || isNaN(value)) {
-            self.$raise($$($nesting, 'FloatDomainError'), value)
+            $Kernel.$raise($$$('FloatDomainError'), value)
           }
           return Math.floor(value);
         }
@@ -4746,7 +4953,7 @@ Opal.modules["corelib/kernel"] = function(Opal) {
             return i;
           }
         }
-        return $$($nesting, 'Opal')['$coerce_to!'](value, $$($nesting, 'Integer'), "to_i");
+        return $Opal['$coerce_to!'](value, $$$('Integer'), "to_i");
       }
 
       if (value === "0") {
@@ -4756,9 +4963,9 @@ Opal.modules["corelib/kernel"] = function(Opal) {
       if (base === undefined) {
         base = 0;
       } else {
-        base = $coerce_to(base, $$($nesting, 'Integer'), 'to_int');
+        base = $coerce_to(base, $$$('Integer'), 'to_int');
         if (base === 1 || base < 0 || base > 36) {
-          self.$raise($$($nesting, 'ArgumentError'), "" + "invalid radix " + (base))
+          $Kernel.$raise($$$('ArgumentError'), "invalid radix " + (base))
         }
       }
 
@@ -4794,7 +5001,7 @@ Opal.modules["corelib/kernel"] = function(Opal) {
           }
           // no-break
         }
-        self.$raise($$($nesting, 'ArgumentError'), "" + "invalid value for Integer(): \"" + (value) + "\"")
+        $Kernel.$raise($$$('ArgumentError'), "invalid value for Integer(): \"" + (value) + "\"")
       });
 
       base = (base === 0 ? 10 : base);
@@ -4802,27 +5009,26 @@ Opal.modules["corelib/kernel"] = function(Opal) {
       base_digits = '0-' + (base <= 10 ? base - 1 : '9a-' + String.fromCharCode(97 + (base - 11)));
 
       if (!(new RegExp('^\\s*[+-]?[' + base_digits + ']+\\s*$')).test(str)) {
-        self.$raise($$($nesting, 'ArgumentError'), "" + "invalid value for Integer(): \"" + (value) + "\"")
+        $Kernel.$raise($$$('ArgumentError'), "invalid value for Integer(): \"" + (value) + "\"")
       }
 
       i = parseInt(str, base);
 
       if (isNaN(i)) {
-        self.$raise($$($nesting, 'ArgumentError'), "" + "invalid value for Integer(): \"" + (value) + "\"")
+        $Kernel.$raise($$$('ArgumentError'), "invalid value for Integer(): \"" + (value) + "\"")
       }
 
       return i;
     ;
-    }, $Kernel_Integer$34.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$Float', $Kernel_Float$35 = function $$Float(value) {
-      var self = this;
-
+    $def(self, '$Float', function $$Float(value) {
+      
       
       var str;
 
       if (value === nil) {
-        self.$raise($$($nesting, 'TypeError'), "can't convert nil into Float")
+        $Kernel.$raise($$$('TypeError'), "can't convert nil into Float")
       }
 
       if (value.$$is_string) {
@@ -4832,89 +5038,81 @@ Opal.modules["corelib/kernel"] = function(Opal) {
 
         //Special case for hex strings only:
         if (/^\s*[-+]?0[xX][0-9a-fA-F]+\s*$/.test(str)) {
-          return self.$Integer(str);
+          return $Kernel.$Integer(str);
         }
 
         if (!/^\s*[-+]?[0-9]*\.?[0-9]+([eE][-+]?[0-9]+)?\s*$/.test(str)) {
-          self.$raise($$($nesting, 'ArgumentError'), "" + "invalid value for Float(): \"" + (value) + "\"")
+          $Kernel.$raise($$$('ArgumentError'), "invalid value for Float(): \"" + (value) + "\"")
         }
 
         return parseFloat(str);
       }
 
-      return $$($nesting, 'Opal')['$coerce_to!'](value, $$($nesting, 'Float'), "to_f");
+      return $Opal['$coerce_to!'](value, $$$('Float'), "to_f");
     
-    }, $Kernel_Float$35.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$Hash', $Kernel_Hash$36 = function $$Hash(arg) {
-      var self = this, $ret_or_4 = nil;
-
+    $def(self, '$Hash', function $$Hash(arg) {
       
-      if ($truthy((function() {if ($truthy(($ret_or_4 = arg['$nil?']()))) {
-        return $ret_or_4
-      } else {
-        return arg['$==']([])
-      }; return nil; })())) {
-        return $hash2([], {})};
-      if ($truthy($$($nesting, 'Hash')['$==='](arg))) {
-        return arg};
-      return $$($nesting, 'Opal')['$coerce_to!'](arg, $$($nesting, 'Hash'), "to_hash");
-    }, $Kernel_Hash$36.$$arity = 1);
+      
+      if (($truthy(arg['$nil?']()) || ($eqeq(arg, [])))) {
+        return $hash2([], {})
+      };
+      if ($eqeqeq($$$('Hash'), arg)) {
+        return arg
+      };
+      return $Opal['$coerce_to!'](arg, $$$('Hash'), "to_hash");
+    }, 1);
     
-    Opal.def(self, '$is_a?', $Kernel_is_a$ques$37 = function(klass) {
+    $def(self, '$is_a?', function $Kernel_is_a$ques$10(klass) {
       var self = this;
 
       
       if (!klass.$$is_class && !klass.$$is_module) {
-        self.$raise($$($nesting, 'TypeError'), "class or module required");
+        $Kernel.$raise($$$('TypeError'), "class or module required");
       }
 
       return Opal.is_a(self, klass);
     
-    }, $Kernel_is_a$ques$37.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$itself', $Kernel_itself$38 = function $$itself() {
+    $def(self, '$itself', function $$itself() {
       var self = this;
 
       return self
-    }, $Kernel_itself$38.$$arity = 0);
-    $alias(self, "kind_of?", "is_a?");
+    }, 0);
     
-    Opal.def(self, '$lambda', $Kernel_lambda$39 = function $$lambda() {
-      var $iter = $Kernel_lambda$39.$$p, block = $iter || nil, self = this;
+    $def(self, '$lambda', function $$lambda() {
+      var block = $$lambda.$$p || nil;
 
-      if ($iter) $Kernel_lambda$39.$$p = null;
+      delete $$lambda.$$p;
       
-      
-      if ($iter) $Kernel_lambda$39.$$p = null;;
+      ;
       return Opal.lambda(block);;
-    }, $Kernel_lambda$39.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$load', $Kernel_load$40 = function $$load(file) {
-      var self = this;
-
+    $def(self, '$load', function $$load(file) {
       
-      file = $$($nesting, 'Opal')['$coerce_to!'](file, $$($nesting, 'String'), "to_str");
+      
+      file = $Opal['$coerce_to!'](file, $$$('String'), "to_str");
       return Opal.load(file);
-    }, $Kernel_load$40.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$loop', $Kernel_loop$41 = function $$loop() {
-      var $$42, $a, $iter = $Kernel_loop$41.$$p, $yield = $iter || nil, self = this, e = nil;
+    $def(self, '$loop', function $$loop() {
+      var $a, $yield = $$loop.$$p || nil, self = this, e = nil;
 
-      if ($iter) $Kernel_loop$41.$$p = null;
+      delete $$loop.$$p;
       
-      if (($yield !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["loop"], ($$42 = function(){var self = $$42.$$s == null ? this : $$42.$$s;
-
-          return $$$($$($nesting, 'Float'), 'INFINITY')}, $$42.$$s = self, $$42.$$arity = 0, $$42))
+      if (!($yield !== nil)) {
+        return $send(self, 'enum_for', ["loop"], function $$11(){
+          return $$$($$$('Float'), 'INFINITY')}, 0)
       };
       while ($truthy(true)) {
         
         try {
           Opal.yieldX($yield, [])
         } catch ($err) {
-          if (Opal.rescue($err, [$$($nesting, 'StopIteration')])) {(e = $err)
+          if (Opal.rescue($err, [$$$('StopIteration')])) {(e = $err)
             try {
               return e.$result()
             } finally { Opal.pop_exception(); }
@@ -4922,99 +5120,105 @@ Opal.modules["corelib/kernel"] = function(Opal) {
         };
       };
       return self;
-    }, $Kernel_loop$41.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$nil?', $Kernel_nil$ques$43 = function() {
-      var self = this;
-
+    $def(self, '$nil?', function $Kernel_nil$ques$12() {
+      
       return false
-    }, $Kernel_nil$ques$43.$$arity = 0);
-    $alias(self, "object_id", "__id__");
+    }, 0);
     
-    Opal.def(self, '$printf', $Kernel_printf$44 = function $$printf($a) {
+    $def(self, '$printf', function $$printf($a) {
       var $post_args, args, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
       if ($truthy(args['$any?']())) {
-        self.$print($send(self, 'format', Opal.to_a(args)))};
+        self.$print($send(self, 'format', $to_a(args)))
+      };
       return nil;
-    }, $Kernel_printf$44.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$proc', $Kernel_proc$45 = function $$proc() {
-      var $iter = $Kernel_proc$45.$$p, block = $iter || nil, self = this;
+    $def(self, '$proc', function $$proc() {
+      var block = $$proc.$$p || nil;
 
-      if ($iter) $Kernel_proc$45.$$p = null;
+      delete $$proc.$$p;
       
-      
-      if ($iter) $Kernel_proc$45.$$p = null;;
-      if ($truthy(block)) {
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "tried to create Proc object without a block")
+      ;
+      if (!$truthy(block)) {
+        $Kernel.$raise($$$('ArgumentError'), "tried to create Proc object without a block")
       };
       block.$$is_lambda = false;
       return block;
-    }, $Kernel_proc$45.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$puts', $Kernel_puts$46 = function $$puts($a) {
-      var $post_args, strs, self = this;
+    $def(self, '$puts', function $$puts($a) {
+      var $post_args, strs;
       if ($gvars.stdout == null) $gvars.stdout = nil;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       strs = $post_args;;
-      return $send($gvars.stdout, 'puts', Opal.to_a(strs));
-    }, $Kernel_puts$46.$$arity = -1);
+      return $send($gvars.stdout, 'puts', $to_a(strs));
+    }, -1);
     
-    Opal.def(self, '$p', $Kernel_p$47 = function $$p($a) {
-      var $post_args, args, $$48, self = this;
+    $def(self, '$p', function $$p($a) {
+      var $post_args, args;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
-      $send(args, 'each', [], ($$48 = function(obj){var self = $$48.$$s == null ? this : $$48.$$s;
-        if ($gvars.stdout == null) $gvars.stdout = nil;
+      $send(args, 'each', [], function $$13(obj){        if ($gvars.stdout == null) $gvars.stdout = nil;
 
         
         
-        if (obj == null) {
-          obj = nil;
-        };
-        return $gvars.stdout.$puts(obj.$inspect());}, $$48.$$s = self, $$48.$$arity = 1, $$48));
+        if (obj == null) obj = nil;;
+        return $gvars.stdout.$puts(obj.$inspect());}, 1);
       if ($truthy($rb_le(args.$length(), 1))) {
         return args['$[]'](0)
       } else {
         return args
       };
-    }, $Kernel_p$47.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$print', $Kernel_print$49 = function $$print($a) {
-      var $post_args, strs, self = this;
+    $def(self, '$print', function $$print($a) {
+      var $post_args, strs;
       if ($gvars.stdout == null) $gvars.stdout = nil;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       strs = $post_args;;
-      return $send($gvars.stdout, 'print', Opal.to_a(strs));
-    }, $Kernel_print$49.$$arity = -1);
+      return $send($gvars.stdout, 'print', $to_a(strs));
+    }, -1);
+    
+    $def(self, '$readline', function $$readline($a) {
+      var $post_args, args;
+      if ($gvars.stdin == null) $gvars.stdin = nil;
+
+      
+      
+      $post_args = Opal.slice.call(arguments);
+      
+      args = $post_args;;
+      return $send($gvars.stdin, 'readline', $to_a(args));
+    }, -1);
     
-    Opal.def(self, '$warn', $Kernel_warn$50 = function $$warn($a, $b) {
-      var $post_args, $kwargs, strs, uplevel, $c, $d, $$51, self = this, location = nil, $ret_or_5 = nil;
+    $def(self, '$warn', function $$warn($a, $b) {
+      var $post_args, $kwargs, strs, uplevel, $c, $d, self = this, location = nil;
       if ($gvars.VERBOSE == null) $gvars.VERBOSE = nil;
       if ($gvars.stderr == null) $gvars.stderr = nil;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       $kwargs = Opal.extract_kwargs($post_args);
       
@@ -5027,60 +5231,49 @@ Opal.modules["corelib/kernel"] = function(Opal) {
       strs = $post_args;;
       
       uplevel = $kwargs.$$smap["uplevel"];
-      if (uplevel == null) {
-        uplevel = nil
-      };
+      if (uplevel == null) uplevel = nil;
       if ($truthy(uplevel)) {
         
-        uplevel = $$($nesting, 'Opal')['$coerce_to!'](uplevel, $$($nesting, 'Integer'), "to_str");
+        uplevel = $Opal['$coerce_to!'](uplevel, $$$('Integer'), "to_str");
         if ($truthy($rb_lt(uplevel, 0))) {
-          self.$raise($$($nesting, 'ArgumentError'), "" + "negative level (" + (uplevel) + ")")};
+          $Kernel.$raise($$$('ArgumentError'), "negative level (" + (uplevel) + ")")
+        };
         location = ($d = ($c = self.$caller($rb_plus(uplevel, 1), 1).$first(), ($c === nil || $c == null) ? nil : $send($c, 'split', [":in `"])), ($d === nil || $d == null) ? nil : $send($d, 'first', []));
         if ($truthy(location)) {
-          location = "" + (location) + ": "};
-        strs = $send(strs, 'map', [], ($$51 = function(s){var self = $$51.$$s == null ? this : $$51.$$s;
-
+          location = "" + (location) + ": "
+        };
+        strs = $send(strs, 'map', [], function $$14(s){
           
           
-          if (s == null) {
-            s = nil;
-          };
-          return "" + (location) + "warning: " + (s);}, $$51.$$s = self, $$51.$$arity = 1, $$51));};
-      if ($truthy((function() {if ($truthy(($ret_or_5 = $gvars.VERBOSE['$nil?']()))) {
-        return $ret_or_5
-      } else {
-        return strs['$empty?']()
-      }; return nil; })())) {
+          if (s == null) s = nil;;
+          return "" + (location) + "warning: " + (s);}, 1);
+      };
+      if (($truthy($gvars.VERBOSE['$nil?']()) || ($truthy(strs['$empty?']())))) {
         return nil
       } else {
-        return $send($gvars.stderr, 'puts', Opal.to_a(strs))
+        return $send($gvars.stderr, 'puts', $to_a(strs))
       };
-    }, $Kernel_warn$50.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$raise', $Kernel_raise$52 = function $$raise(exception, string, backtrace) {
-      var self = this;
-      if ($gvars["!"] == null) $gvars["!"] = nil;
+    $def(self, '$raise', function $$raise(exception, string, backtrace) {
+            if ($gvars["!"] == null) $gvars["!"] = nil;
       if ($gvars["@"] == null) $gvars["@"] = nil;
 
       
       ;
       
-      if (string == null) {
-        string = nil;
-      };
+      if (string == null) string = nil;;
       
-      if (backtrace == null) {
-        backtrace = nil;
-      };
+      if (backtrace == null) backtrace = nil;;
       
       if (exception == null && $gvars["!"] !== nil) {
         throw $gvars["!"];
       }
       if (exception == null) {
-        exception = $$($nesting, 'RuntimeError').$new("");
+        exception = $$$('RuntimeError').$new("");
       }
       else if ($respond_to(exception, '$to_str')) {
-        exception = $$($nesting, 'RuntimeError').$new(exception.$to_str());
+        exception = $$$('RuntimeError').$new(exception.$to_str());
       }
       // using respond_to? and not an undefined check to avoid method_missing matching as true
       else if (exception.$$is_class && $respond_to(exception, '$exception')) {
@@ -5090,7 +5283,7 @@ Opal.modules["corelib/kernel"] = function(Opal) {
         // exception is fine
       }
       else {
-        exception = $$($nesting, 'TypeError').$new("exception class/object expected");
+        exception = $$$('TypeError').$new("exception class/object expected");
       }
 
       if (backtrace !== nil) {
@@ -5106,17 +5299,15 @@ Opal.modules["corelib/kernel"] = function(Opal) {
 
       throw exception;
     ;
-    }, $Kernel_raise$52.$$arity = -1);
-    $alias(self, "fail", "raise");
+    }, -1);
     
-    Opal.def(self, '$rand', $Kernel_rand$53 = function $$rand(max) {
-      var self = this;
-
+    $def(self, '$rand', function $$rand(max) {
+      
       
       ;
       
       if (max === undefined) {
-        return $$$($$($nesting, 'Random'), 'DEFAULT').$rand();
+        return $$$($$$('Random'), 'DEFAULT').$rand();
       }
 
       if (max.$$is_number) {
@@ -5133,17 +5324,15 @@ Opal.modules["corelib/kernel"] = function(Opal) {
         }
       }
     ;
-      return $$$($$($nesting, 'Random'), 'DEFAULT').$rand(max);
-    }, $Kernel_rand$53.$$arity = -1);
+      return $$$($$$('Random'), 'DEFAULT').$rand(max);
+    }, -1);
     
-    Opal.def(self, '$respond_to?', $Kernel_respond_to$ques$54 = function(name, include_all) {
+    $def(self, '$respond_to?', function $Kernel_respond_to$ques$15(name, include_all) {
       var self = this;
 
       
       
-      if (include_all == null) {
-        include_all = false;
-      };
+      if (include_all == null) include_all = false;;
       
       var body = self['$' + name];
 
@@ -5157,81 +5346,90 @@ Opal.modules["corelib/kernel"] = function(Opal) {
         return self['$respond_to_missing?'](name, include_all);
       }
     ;
-    }, $Kernel_respond_to$ques$54.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$respond_to_missing?', $Kernel_respond_to_missing$ques$55 = function(method_name, include_all) {
-      var self = this;
-
+    $def(self, '$respond_to_missing?', function $Kernel_respond_to_missing$ques$16(method_name, include_all) {
       
       
-      if (include_all == null) {
-        include_all = false;
-      };
+      
+      if (include_all == null) include_all = false;;
       return false;
-    }, $Kernel_respond_to_missing$ques$55.$$arity = -2);
-    $$($nesting, 'Opal').$pristine(self, "respond_to?", "respond_to_missing?");
+    }, -2);
+    $Opal.$pristine(self, "respond_to?", "respond_to_missing?");
     
-    Opal.def(self, '$require', $Kernel_require$56 = function $$require(file) {
-      var self = this;
-
+    $def(self, '$require', function $$require(file) {
       
-      file = $$($nesting, 'Opal')['$coerce_to!'](file, $$($nesting, 'String'), "to_str");
-      return Opal.require(file);
-    }, $Kernel_require$56.$$arity = 1);
+      
+      // As Object.require refers to Kernel.require once Kernel has been loaded the String
+      // class may not be available yet, the coercion requires both  String and Array to be loaded.
+      if (typeof file !== 'string' && Opal.String && Opal.Array) {
+        (file = $Opal['$coerce_to!'](file, $$$('String'), "to_str"))
+      }
+      return Opal.require(file)
     
-    Opal.def(self, '$require_relative', $Kernel_require_relative$57 = function $$require_relative(file) {
-      var self = this;
-
+    }, 1);
+    
+    $def(self, '$require_relative', function $$require_relative(file) {
+      
       
-      $$($nesting, 'Opal')['$try_convert!'](file, $$($nesting, 'String'), "to_str");
-      file = $$($nesting, 'File').$expand_path($$($nesting, 'File').$join(Opal.current_file, "..", file));
+      $Opal['$try_convert!'](file, $$$('String'), "to_str");
+      file = $$$('File').$expand_path($$$('File').$join(Opal.current_file, "..", file));
       return Opal.require(file);
-    }, $Kernel_require_relative$57.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$require_tree', $Kernel_require_tree$58 = function $$require_tree(path) {
-      var self = this;
+    $def(self, '$require_tree', function $$require_tree(path, $kwargs) {
+      var autoload;
 
       
+      
+      if ($kwargs == null) {
+        $kwargs = $hash2([], {});
+      } else if (!$kwargs.$$is_hash) {
+        throw Opal.ArgumentError.$new('expected kwargs');
+      };
+      
+      autoload = $kwargs.$$smap["autoload"];
+      if (autoload == null) autoload = false;
+      
       var result = [];
 
-      path = $$($nesting, 'File').$expand_path(path)
+      path = $$$('File').$expand_path(path)
       path = Opal.normalize(path);
       if (path === '.') path = '';
       for (var name in Opal.modules) {
         if ((name)['$start_with?'](path)) {
-          result.push([name, Opal.require(name)]);
+          if(!autoload) {
+            result.push([name, Opal.require(name)]);
+          } else {
+            result.push([name, true]); // do nothing, delegated to a autoloading
+          }
         }
       }
 
       return result;
+    ;
+    }, -2);
     
-    }, $Kernel_require_tree$58.$$arity = 1);
-    $alias(self, "send", "__send__");
-    $alias(self, "public_send", "__send__");
-    
-    Opal.def(self, '$singleton_class', $Kernel_singleton_class$59 = function $$singleton_class() {
+    $def(self, '$singleton_class', function $$singleton_class() {
       var self = this;
 
       return Opal.get_singleton_class(self);
-    }, $Kernel_singleton_class$59.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$sleep', $Kernel_sleep$60 = function $$sleep(seconds) {
-      var self = this;
-
+    $def(self, '$sleep', function $$sleep(seconds) {
       
       
-      if (seconds == null) {
-        seconds = nil;
-      };
+      
+      if (seconds == null) seconds = nil;;
       
       if (seconds === nil) {
-        self.$raise($$($nesting, 'TypeError'), "can't convert NilClass into time interval")
+        $Kernel.$raise($$$('TypeError'), "can't convert NilClass into time interval")
       }
       if (!seconds.$$is_number) {
-        self.$raise($$($nesting, 'TypeError'), "" + "can't convert " + (seconds.$class()) + " into time interval")
+        $Kernel.$raise($$$('TypeError'), "can't convert " + (seconds.$class()) + " into time interval")
       }
       if (seconds < 0) {
-        self.$raise($$($nesting, 'ArgumentError'), "time interval must be positive")
+        $Kernel.$raise($$$('ArgumentError'), "time interval must be positive")
       }
       var get_time = Opal.global.performance ?
         function() {return performance.now()} :
@@ -5241,156 +5439,241 @@ Opal.modules["corelib/kernel"] = function(Opal) {
       while (get_time() - t <= seconds * 1000);
       return Math.round(seconds);
     ;
-    }, $Kernel_sleep$60.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$srand', $Kernel_srand$61 = function $$srand(seed) {
-      var self = this;
-
+    $def(self, '$srand', function $$srand(seed) {
       
       
-      if (seed == null) {
-        seed = $$($nesting, 'Random').$new_seed();
-      };
-      return $$($nesting, 'Random').$srand(seed);
-    }, $Kernel_srand$61.$$arity = -1);
+      
+      if (seed == null) seed = $$('Random').$new_seed();;
+      return $$$('Random').$srand(seed);
+    }, -1);
     
-    Opal.def(self, '$String', $Kernel_String$62 = function $$String(str) {
-      var self = this, $ret_or_6 = nil;
+    $def(self, '$String', function $$String(str) {
+      var $ret_or_1 = nil;
 
-      if ($truthy(($ret_or_6 = $$($nesting, 'Opal')['$coerce_to?'](str, $$($nesting, 'String'), "to_str")))) {
-        return $ret_or_6
+      if ($truthy(($ret_or_1 = $Opal['$coerce_to?'](str, $$$('String'), "to_str")))) {
+        return $ret_or_1
       } else {
-        return $$($nesting, 'Opal')['$coerce_to!'](str, $$($nesting, 'String'), "to_s")
+        return $Opal['$coerce_to!'](str, $$$('String'), "to_s")
       }
-    }, $Kernel_String$62.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$tap', $Kernel_tap$63 = function $$tap() {
-      var $iter = $Kernel_tap$63.$$p, block = $iter || nil, self = this;
+    $def(self, '$tap', function $$tap() {
+      var block = $$tap.$$p || nil, self = this;
 
-      if ($iter) $Kernel_tap$63.$$p = null;
+      delete $$tap.$$p;
       
-      
-      if ($iter) $Kernel_tap$63.$$p = null;;
+      ;
       Opal.yield1(block, self);
       return self;
-    }, $Kernel_tap$63.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_proc', $Kernel_to_proc$64 = function $$to_proc() {
+    $def(self, '$to_proc', function $$to_proc() {
       var self = this;
 
       return self
-    }, $Kernel_to_proc$64.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_s', $Kernel_to_s$65 = function $$to_s() {
+    $def(self, '$to_s', function $$to_s() {
       var self = this;
 
-      return "" + "#<" + (self.$class()) + ":0x" + (self.$__id__().$to_s(16)) + ">"
-    }, $Kernel_to_s$65.$$arity = 0);
+      return "#<" + (self.$class()) + ":0x" + (self.$__id__().$to_s(16)) + ">"
+    }, 0);
     
-    Opal.def(self, '$catch', $Kernel_catch$66 = function(tag) {
-      var $iter = $Kernel_catch$66.$$p, $yield = $iter || nil, self = this, $ret_or_7 = nil, e = nil;
+    $def(self, '$catch', function $Kernel_catch$17(tag) {
+      var $yield = $Kernel_catch$17.$$p || nil, $ret_or_1 = nil, e = nil;
 
-      if ($iter) $Kernel_catch$66.$$p = null;
+      delete $Kernel_catch$17.$$p;
       
       
-      if (tag == null) {
-        tag = nil;
-      };
+      if (tag == null) tag = nil;;
       try {
         
-        tag = (function() {if ($truthy(($ret_or_7 = tag))) {
-          return $ret_or_7
-        } else {
-          return $$($nesting, 'Object').$new()
-        }; return nil; })();
+        tag = ($truthy(($ret_or_1 = tag)) ? ($ret_or_1) : ($Object.$new()));
         return Opal.yield1($yield, tag);;
       } catch ($err) {
-        if (Opal.rescue($err, [$$($nesting, 'UncaughtThrowError')])) {(e = $err)
+        if (Opal.rescue($err, [$$$('UncaughtThrowError')])) {(e = $err)
           try {
             
-            if (e.$tag()['$=='](tag)) {
-              return e.$value()};
-            return self.$raise();
+            if ($eqeq(e.$tag(), tag)) {
+              return e.$value()
+            };
+            return $Kernel.$raise();
           } finally { Opal.pop_exception(); }
         } else { throw $err; }
       };
-    }, $Kernel_catch$66.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$throw', $Kernel_throw$67 = function(tag, obj) {
-      var self = this;
-
+    $def(self, '$throw', function $Kernel_throw$18(tag, obj) {
       
       
-      if (obj == null) {
-        obj = nil;
-      };
-      return self.$raise($$($nesting, 'UncaughtThrowError').$new(tag, obj));
-    }, $Kernel_throw$67.$$arity = -2);
+      
+      if (obj == null) obj = nil;;
+      return $Kernel.$raise($$$('UncaughtThrowError').$new(tag, obj));
+    }, -2);
     
-    Opal.def(self, '$open', $Kernel_open$68 = function $$open($a) {
-      var $iter = $Kernel_open$68.$$p, block = $iter || nil, $post_args, args, self = this;
+    $def(self, '$open', function $$open($a) {
+      var block = $$open.$$p || nil, $post_args, args;
 
-      if ($iter) $Kernel_open$68.$$p = null;
-      
+      delete $$open.$$p;
       
-      if ($iter) $Kernel_open$68.$$p = null;;
+      ;
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
-      return $send($$($nesting, 'File'), 'open', Opal.to_a(args), block.$to_proc());
-    }, $Kernel_open$68.$$arity = -1);
+      return $send($$$('File'), 'open', $to_a(args), block.$to_proc());
+    }, -1);
     
-    Opal.def(self, '$yield_self', $Kernel_yield_self$69 = function $$yield_self() {
-      var $$70, $iter = $Kernel_yield_self$69.$$p, $yield = $iter || nil, self = this;
+    $def(self, '$yield_self', function $$yield_self() {
+      var $yield = $$yield_self.$$p || nil, self = this;
 
-      if ($iter) $Kernel_yield_self$69.$$p = null;
+      delete $$yield_self.$$p;
       
-      if (($yield !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["yield_self"], ($$70 = function(){var self = $$70.$$s == null ? this : $$70.$$s;
-
-          return 1}, $$70.$$s = self, $$70.$$arity = 0, $$70))
+      if (!($yield !== nil)) {
+        return $send(self, 'enum_for', ["yield_self"], function $$19(){
+          return 1}, 0)
       };
       return Opal.yield1($yield, self);;
-    }, $Kernel_yield_self$69.$$arity = 0);
+    }, 0);
+    $alias(self, "fail", "raise");
+    $alias(self, "kind_of?", "is_a?");
+    $alias(self, "object_id", "__id__");
+    $alias(self, "public_send", "__send__");
+    $alias(self, "send", "__send__");
     $alias(self, "then", "yield_self");
-    return $$($nesting, 'Opal').$pristine(self, "method_missing");
-  })($nesting[0], $nesting);
-  return (function($base, $super, $parent_nesting) {
+    return $alias(self, "to_enum", "enum_for");
+  })('::', $nesting);
+  return (function($base, $super) {
     var self = $klass($base, $super, 'Object');
 
-    var $nesting = [self].concat($parent_nesting);
+    
+    
+    delete $Object.$$prototype.$require;
+    return self.$include($Kernel);
+  })('::', null);
+};
 
-    return self.$include($$($nesting, 'Kernel'))
-  })($nesting[0], null, $nesting);
+Opal.modules["corelib/main"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $def = Opal.def, $Object = Opal.Object, $Kernel = Opal.Kernel;
+
+  Opal.add_stubs('include,raise');
+  return (function(self, $parent_nesting) {
+    
+    
+    
+    $def(self, '$to_s', function $$to_s() {
+      
+      return "main"
+    }, 0);
+    
+    $def(self, '$include', function $$include(mod) {
+      
+      return $Object.$include(mod)
+    }, 1);
+    
+    $def(self, '$autoload', function $$autoload($a) {
+      var $post_args, args;
+
+      
+      
+      $post_args = Opal.slice.call(arguments);
+      
+      args = $post_args;;
+      return Opal.Object.$autoload.apply(Opal.Object, args);;
+    }, -1);
+    return $def(self, '$using', function $$using(mod) {
+      
+      return $Kernel.$raise("main.using is permitted only at toplevel")
+    }, 1);
+  })(Opal.get_singleton_class(self), $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/error"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $gvars = Opal.gvars, $send = Opal.send, $hash2 = Opal.hash2, $truthy = Opal.truthy, $module = Opal.module, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["corelib/error/errno"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $truthy = Opal.truthy, $rb_plus = Opal.rb_plus, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def, $klass = Opal.klass;
+
+  Opal.add_stubs('+,errno,class,attr_reader');
+  
+  (function($base, $parent_nesting) {
+    var self = $module($base, 'Errno');
+
+    var $nesting = [self].concat($parent_nesting), errors = nil, klass = nil;
+
+    
+    errors = [["EINVAL", "Invalid argument", 22], ["EEXIST", "File exists", 17], ["EISDIR", "Is a directory", 21], ["EMFILE", "Too many open files", 24], ["EACCES", "Permission denied", 13], ["EPERM", "Operation not permitted", 1], ["ENOENT", "No such file or directory", 2]];
+    klass = nil;
+    
+    var i;
+    for (i = 0; i < errors.length; i++) {
+      (function() { // Create a closure
+        var class_name = errors[i][0];
+        var default_message = errors[i][1];
+        var errno = errors[i][2];
+
+        klass = Opal.klass(self, Opal.SystemCallError, class_name);
+        klass.errno = errno;
+
+        (function(self, $parent_nesting) {
+      
+      return $def(self, '$new', function $new$1(name) {
+        var $yield = $new$1.$$p || nil, self = this, message = nil;
+
+        delete $new$1.$$p;
+        
+        
+        if (name == null) name = nil;;
+        message = default_message;
+        if ($truthy(name)) {
+          message = $rb_plus(message, " - " + (name))
+        };
+        return $send2(self, $find_super(self, 'new', $new$1, false, true), 'new', [message], null);
+      }, -1)
+    })(Opal.get_singleton_class(klass), $nesting)
+      })();
+    }
+  ;
+  })('::', $nesting);
+  return (function($base, $super, $parent_nesting) {
+    var self = $klass($base, $super, 'SystemCallError');
+
+    var $nesting = [self].concat($parent_nesting);
+
+    
+    
+    $def(self, '$errno', function $$errno() {
+      var self = this;
+
+      return self.$class().$errno()
+    }, 0);
+    return (function(self, $parent_nesting) {
+      
+      return self.$attr_reader("errno")
+    })(Opal.get_singleton_class(self), $nesting);
+  })('::', $$$('StandardError'), $nesting);
+};
 
-  Opal.add_stubs(['$new', '$map', '$backtrace', '$clone', '$to_s', '$tty?', '$include?', '$raise', '$dup', '$!', '$empty?', '$caller', '$shift', '$+', '$class', '$join', '$cause', '$full_message', '$==', '$reverse', '$split', '$attr_reader', '$inspect']);
+Opal.modules["corelib/error"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $gvars = Opal.gvars, $defs = Opal.defs, $send = Opal.send, $to_a = Opal.to_a, $def = Opal.def, $truthy = Opal.truthy, $hash2 = Opal.hash2, $Kernel = Opal.Kernel, $not = Opal.not, $rb_plus = Opal.rb_plus, $eqeq = Opal.eqeq, $Object = Opal.Object, $send2 = Opal.send2, $find_super = Opal.find_super, $module = Opal.module;
+
+  Opal.add_stubs('new,map,backtrace,clone,to_s,merge,tty?,[],include?,raise,dup,empty?,!,caller,shift,+,class,join,cause,full_message,==,reverse,split,autoload,attr_reader,inspect');
   
   (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Exception');
 
-    var $nesting = [self].concat($parent_nesting), $Exception_new$1, $Exception_exception$2, $Exception_initialize$3, $Exception_backtrace$4, $Exception_backtrace_locations$5, $Exception_cause$7, $Exception_exception$8, $Exception_message$9, $Exception_full_message$10, $Exception_inspect$12, $Exception_set_backtrace$13, $Exception_to_s$15;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-    self.$$prototype.message = nil;
+    $proto.message = nil;
     
-    Opal.defineProperty(self.$$prototype, '$$is_exception', true);
+    Opal.prop(self.$$prototype, '$$is_exception', true);
     var stack_trace_limit;
-    Opal.defs(self, '$new', $Exception_new$1 = function($a) {
+    $defs(self, '$new', function $Exception_new$1($a) {
       var $post_args, args, self = this;
       if ($gvars["!"] == null) $gvars["!"] = nil;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
       
@@ -5412,29 +5695,29 @@ Opal.modules["corelib/error"] = function(Opal) {
 
       return error;
     ;
-    }, $Exception_new$1.$$arity = -1);
+    }, -1);
     stack_trace_limit = self.$new;
-    Opal.defs(self, '$exception', $Exception_exception$2 = function $$exception($a) {
+    $defs(self, '$exception', function $$exception($a) {
       var $post_args, args, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
-      return $send(self, 'new', Opal.to_a(args));
-    }, $Exception_exception$2.$$arity = -1);
+      return $send(self, 'new', $to_a(args));
+    }, -1);
     
-    Opal.def(self, '$initialize', $Exception_initialize$3 = function $$initialize($a) {
+    $def(self, '$initialize', function $$initialize($a) {
       var $post_args, args, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
       return self.message = (args.length > 0) ? args[0] : nil;;
-    }, $Exception_initialize$3.$$arity = -1);
+    }, -1);
     
     // Convert backtrace from any format to Ruby format
     function correct_backtrace(backtrace) {
@@ -5466,7 +5749,7 @@ Opal.modules["corelib/error"] = function(Opal) {
     }
   ;
     
-    Opal.def(self, '$backtrace', $Exception_backtrace$4 = function $$backtrace() {
+    $def(self, '$backtrace', function $$backtrace() {
       var self = this;
 
       
@@ -5477,7 +5760,7 @@ Opal.modules["corelib/error"] = function(Opal) {
 
       var backtrace = self.stack;
 
-      if (backtrace.$$is_string) {
+      if (typeof(backtrace) !== 'undefined' && backtrace.$$is_string) {
         return self.backtrace = correct_backtrace(backtrace.split("\n").slice(0, 15));
       }
       else if (backtrace) {
@@ -5486,39 +5769,34 @@ Opal.modules["corelib/error"] = function(Opal) {
 
       return [];
     
-    }, $Exception_backtrace$4.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$backtrace_locations', $Exception_backtrace_locations$5 = function $$backtrace_locations() {
-      var $a, $$6, self = this;
+    $def(self, '$backtrace_locations', function $$backtrace_locations() {
+      var $a, self = this;
 
       
       if (self.backtrace_locations) return self.backtrace_locations;
-      self.backtrace_locations = ($a = self.$backtrace(), ($a === nil || $a == null) ? nil : $send($a, 'map', [], ($$6 = function(loc){var self = $$6.$$s == null ? this : $$6.$$s;
-
+      self.backtrace_locations = ($a = self.$backtrace(), ($a === nil || $a == null) ? nil : $send($a, 'map', [], function $$2(loc){
         
         
-        if (loc == null) {
-          loc = nil;
-        };
-        return $$$($$$($$$('::', 'Thread'), 'Backtrace'), 'Location').$new(loc);}, $$6.$$s = self, $$6.$$arity = 1, $$6)))
+        if (loc == null) loc = nil;;
+        return $$$($$$($$$('Thread'), 'Backtrace'), 'Location').$new(loc);}, 1))
       return self.backtrace_locations;
     
-    }, $Exception_backtrace_locations$5.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$cause', $Exception_cause$7 = function $$cause() {
+    $def(self, '$cause', function $$cause() {
       var self = this;
 
       return self.cause || nil;
-    }, $Exception_cause$7.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$exception', $Exception_exception$8 = function $$exception(str) {
+    $def(self, '$exception', function $$exception(str) {
       var self = this;
 
       
       
-      if (str == null) {
-        str = nil;
-      };
+      if (str == null) str = nil;;
       
       if (str === nil || self === str) {
         return self;
@@ -5531,42 +5809,31 @@ Opal.modules["corelib/error"] = function(Opal) {
       cloned.cause = self.cause;
       return cloned;
     ;
-    }, $Exception_exception$8.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$message', $Exception_message$9 = function $$message() {
+    $def(self, '$message', function $$message() {
       var self = this;
 
       return self.$to_s()
-    }, $Exception_message$9.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$full_message', $Exception_full_message$10 = function $$full_message($kwargs) {
-      var highlight, order, $$11, self = this, bold_underline = nil, bold = nil, reset = nil, bt = nil, $ret_or_1 = nil, first = nil, msg = nil;
+    $def(self, '$full_message', function $$full_message(kwargs) {
+      var $a, $b, self = this, $ret_or_1 = nil, highlight = nil, order = nil, bold_underline = nil, bold = nil, reset = nil, bt = nil, first = nil, msg = nil;
       if ($gvars.stderr == null) $gvars.stderr = nil;
 
       
       
-      if ($kwargs == null) {
-        $kwargs = $hash2([], {});
-      } else if (!$kwargs.$$is_hash) {
-        throw Opal.ArgumentError.$new('expected kwargs');
-      };
-      
-      highlight = $kwargs.$$smap["highlight"];
-      if (highlight == null) {
-        highlight = $gvars.stderr['$tty?']()
-      };
-      
-      order = $kwargs.$$smap["order"];
-      if (order == null) {
-        order = "top"
+      if (kwargs == null) kwargs = nil;;
+      if (!$truthy((($a = $$('Hash', 'skip_raise')) ? 'constant' : nil))) {
+        return "" + (self.message) + "\n" + (self.stack)
       };
-      if ($truthy([true, false]['$include?'](highlight))) {
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "" + "expected true or false as highlight: " + (highlight))
+      kwargs = $hash2(["highlight", "order"], {"highlight": $gvars.stderr['$tty?'](), "order": "top"}).$merge(($truthy(($ret_or_1 = kwargs)) ? ($ret_or_1) : ($hash2([], {}))));
+      $b = [kwargs['$[]']("highlight"), kwargs['$[]']("order")], (highlight = $b[0]), (order = $b[1]), $b;
+      if (!$truthy([true, false]['$include?'](highlight))) {
+        $Kernel.$raise($$$('ArgumentError'), "expected true or false as highlight: " + (highlight))
       };
-      if ($truthy(["top", "bottom"]['$include?'](order))) {
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "" + "expected :top or :bottom as order: " + (order))
+      if (!$truthy(["top", "bottom"]['$include?'](order))) {
+        $Kernel.$raise($$$('ArgumentError'), "expected :top or :bottom as order: " + (order))
       };
       if ($truthy(highlight)) {
         
@@ -5577,33 +5844,29 @@ Opal.modules["corelib/error"] = function(Opal) {
         bold_underline = (bold = (reset = ""))
       };
       bt = self.$backtrace().$dup();
-      if ($truthy((function() {if ($truthy(($ret_or_1 = bt['$!']()))) {
-        return $ret_or_1
-      } else {
-        return bt['$empty?']()
-      }; return nil; })())) {
-        bt = self.$caller()};
+      if (($not(bt) || ($truthy(bt['$empty?']())))) {
+        bt = self.$caller()
+      };
       first = bt.$shift();
       msg = "" + (first) + ": ";
       msg = $rb_plus(msg, "" + (bold) + (self.$to_s()) + " (" + (bold_underline) + (self.$class()) + (reset) + (bold) + ")" + (reset) + "\n");
-      msg = $rb_plus(msg, $send(bt, 'map', [], ($$11 = function(loc){var self = $$11.$$s == null ? this : $$11.$$s;
-
+      msg = $rb_plus(msg, $send(bt, 'map', [], function $$3(loc){
         
         
-        if (loc == null) {
-          loc = nil;
-        };
-        return "" + "\tfrom " + (loc) + "\n";}, $$11.$$s = self, $$11.$$arity = 1, $$11)).$join());
+        if (loc == null) loc = nil;;
+        return "\tfrom " + (loc) + "\n";}, 1).$join());
       if ($truthy(self.$cause())) {
-        msg = $rb_plus(msg, self.$cause().$full_message($hash2(["highlight"], {"highlight": highlight})))};
-      if (order['$==']("bottom")) {
+        msg = $rb_plus(msg, self.$cause().$full_message($hash2(["highlight"], {"highlight": highlight})))
+      };
+      if ($eqeq(order, "bottom")) {
         
         msg = msg.$split("\n").$reverse().$join("\n");
-        msg = $rb_plus("" + (bold) + "Traceback" + (reset) + " (most recent call last):\n", msg);};
+        msg = $rb_plus("" + (bold) + "Traceback" + (reset) + " (most recent call last):\n", msg);
+      };
       return msg;
-    }, $Exception_full_message$10.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$inspect', $Exception_inspect$12 = function $$inspect() {
+    $def(self, '$inspect', function $$inspect() {
       var self = this, as_str = nil;
 
       
@@ -5611,12 +5874,12 @@ Opal.modules["corelib/error"] = function(Opal) {
       if ($truthy(as_str['$empty?']())) {
         return self.$class().$to_s()
       } else {
-        return "" + "#<" + (self.$class().$to_s()) + ": " + (self.$to_s()) + ">"
+        return "#<" + (self.$class().$to_s()) + ": " + (self.$to_s()) + ">"
       };
-    }, $Exception_inspect$12.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$set_backtrace', $Exception_set_backtrace$13 = function $$set_backtrace(backtrace) {
-      var $$14, self = this;
+    $def(self, '$set_backtrace', function $$set_backtrace(backtrace) {
+      var self = this;
 
       
       var valid = true, i, ii;
@@ -5640,379 +5903,138 @@ Opal.modules["corelib/error"] = function(Opal) {
         }
 
         if (valid === false) {
-          self.$raise($$($nesting, 'TypeError'), "backtrace must be Array of String")
+          $Kernel.$raise($$$('TypeError'), "backtrace must be Array of String")
         }
 
         self.backtrace = backtrace;
-        self.stack = $send((backtrace), 'map', [], ($$14 = function(i){var self = $$14.$$s == null ? this : $$14.$$s;
-
+        self.stack = $send((backtrace), 'map', [], function $$4(i){
         
         
-        if (i == null) {
-          i = nil;
-        };
-        return $rb_plus("  from ", i);}, $$14.$$s = self, $$14.$$arity = 1, $$14)).join("\n");
+        if (i == null) i = nil;;
+        return $rb_plus("  from ", i);}, 1).join("\n");
       }
 
       return backtrace;
     
-    }, $Exception_set_backtrace$13.$$arity = 1);
-    return (Opal.def(self, '$to_s', $Exception_to_s$15 = function $$to_s() {
-      var self = this, $ret_or_2 = nil, $ret_or_3 = nil;
+    }, 1);
+    return $def(self, '$to_s', function $$to_s() {
+      var self = this, $ret_or_1 = nil, $ret_or_2 = nil;
 
-      if ($truthy(($ret_or_2 = (function() {if ($truthy(($ret_or_3 = self.message))) {
-        return self.message.$to_s()
-      } else {
-        return $ret_or_3
-      }; return nil; })()))) {
-        return $ret_or_2
+      if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = self.message)) ? (self.message.$to_s()) : ($ret_or_2))))) {
+        return $ret_or_1
       } else {
         return self.$class().$to_s()
       }
-    }, $Exception_to_s$15.$$arity = 0), nil) && 'to_s';
-  })($nesting[0], Error, $nesting);
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'ScriptError');
-
-    var $nesting = [self].concat($parent_nesting);
-
-    return nil
-  })($nesting[0], $$($nesting, 'Exception'), $nesting);
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'SyntaxError');
-
-    var $nesting = [self].concat($parent_nesting);
-
-    return nil
-  })($nesting[0], $$($nesting, 'ScriptError'), $nesting);
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'LoadError');
-
-    var $nesting = [self].concat($parent_nesting);
-
-    return nil
-  })($nesting[0], $$($nesting, 'ScriptError'), $nesting);
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'NotImplementedError');
-
-    var $nesting = [self].concat($parent_nesting);
-
-    return nil
-  })($nesting[0], $$($nesting, 'ScriptError'), $nesting);
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'SystemExit');
-
-    var $nesting = [self].concat($parent_nesting);
-
-    return nil
-  })($nesting[0], $$($nesting, 'Exception'), $nesting);
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'NoMemoryError');
-
-    var $nesting = [self].concat($parent_nesting);
-
-    return nil
-  })($nesting[0], $$($nesting, 'Exception'), $nesting);
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'SignalException');
-
-    var $nesting = [self].concat($parent_nesting);
-
-    return nil
-  })($nesting[0], $$($nesting, 'Exception'), $nesting);
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'Interrupt');
-
-    var $nesting = [self].concat($parent_nesting);
-
-    return nil
-  })($nesting[0], $$($nesting, 'SignalException'), $nesting);
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'SecurityError');
-
-    var $nesting = [self].concat($parent_nesting);
-
-    return nil
-  })($nesting[0], $$($nesting, 'Exception'), $nesting);
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'SystemStackError');
-
-    var $nesting = [self].concat($parent_nesting);
-
-    return nil
-  })($nesting[0], $$($nesting, 'Exception'), $nesting);
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'StandardError');
-
-    var $nesting = [self].concat($parent_nesting);
-
-    return nil
-  })($nesting[0], $$($nesting, 'Exception'), $nesting);
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'EncodingError');
-
-    var $nesting = [self].concat($parent_nesting);
-
-    return nil
-  })($nesting[0], $$($nesting, 'StandardError'), $nesting);
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'ZeroDivisionError');
-
-    var $nesting = [self].concat($parent_nesting);
-
-    return nil
-  })($nesting[0], $$($nesting, 'StandardError'), $nesting);
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'NameError');
-
-    var $nesting = [self].concat($parent_nesting);
-
-    return nil
-  })($nesting[0], $$($nesting, 'StandardError'), $nesting);
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'NoMethodError');
-
-    var $nesting = [self].concat($parent_nesting);
-
-    return nil
-  })($nesting[0], $$($nesting, 'NameError'), $nesting);
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'RuntimeError');
-
-    var $nesting = [self].concat($parent_nesting);
-
-    return nil
-  })($nesting[0], $$($nesting, 'StandardError'), $nesting);
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'FrozenError');
-
-    var $nesting = [self].concat($parent_nesting);
-
-    return nil
-  })($nesting[0], $$($nesting, 'RuntimeError'), $nesting);
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'LocalJumpError');
-
-    var $nesting = [self].concat($parent_nesting);
-
-    return nil
-  })($nesting[0], $$($nesting, 'StandardError'), $nesting);
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'TypeError');
-
-    var $nesting = [self].concat($parent_nesting);
-
-    return nil
-  })($nesting[0], $$($nesting, 'StandardError'), $nesting);
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'ArgumentError');
-
-    var $nesting = [self].concat($parent_nesting);
-
-    return nil
-  })($nesting[0], $$($nesting, 'StandardError'), $nesting);
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'UncaughtThrowError');
-
-    var $nesting = [self].concat($parent_nesting);
-
-    return nil
-  })($nesting[0], $$($nesting, 'ArgumentError'), $nesting);
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'IndexError');
-
-    var $nesting = [self].concat($parent_nesting);
-
-    return nil
-  })($nesting[0], $$($nesting, 'StandardError'), $nesting);
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'StopIteration');
-
-    var $nesting = [self].concat($parent_nesting);
-
-    return nil
-  })($nesting[0], $$($nesting, 'IndexError'), $nesting);
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'ClosedQueueError');
-
-    var $nesting = [self].concat($parent_nesting);
-
-    return nil
-  })($nesting[0], $$($nesting, 'StopIteration'), $nesting);
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'KeyError');
-
-    var $nesting = [self].concat($parent_nesting);
-
-    return nil
-  })($nesting[0], $$($nesting, 'IndexError'), $nesting);
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'RangeError');
-
-    var $nesting = [self].concat($parent_nesting);
-
-    return nil
-  })($nesting[0], $$($nesting, 'StandardError'), $nesting);
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'FloatDomainError');
-
-    var $nesting = [self].concat($parent_nesting);
-
-    return nil
-  })($nesting[0], $$($nesting, 'RangeError'), $nesting);
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'IOError');
-
-    var $nesting = [self].concat($parent_nesting);
-
-    return nil
-  })($nesting[0], $$($nesting, 'StandardError'), $nesting);
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'EOFError');
-
-    var $nesting = [self].concat($parent_nesting);
-
-    return nil
-  })($nesting[0], $$($nesting, 'IOError'), $nesting);
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'SystemCallError');
-
-    var $nesting = [self].concat($parent_nesting);
-
-    return nil
-  })($nesting[0], $$($nesting, 'StandardError'), $nesting);
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'RegexpError');
-
-    var $nesting = [self].concat($parent_nesting);
-
-    return nil
-  })($nesting[0], $$($nesting, 'StandardError'), $nesting);
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'ThreadError');
-
-    var $nesting = [self].concat($parent_nesting);
-
-    return nil
-  })($nesting[0], $$($nesting, 'StandardError'), $nesting);
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'FiberError');
-
-    var $nesting = [self].concat($parent_nesting);
-
-    return nil
-  })($nesting[0], $$($nesting, 'StandardError'), $nesting);
-  (function($base, $parent_nesting) {
-    var self = $module($base, 'Errno');
-
-    var $nesting = [self].concat($parent_nesting);
-
-    return (function($base, $super, $parent_nesting) {
-      var self = $klass($base, $super, 'EINVAL');
-
-      var $nesting = [self].concat($parent_nesting), $EINVAL_new$16;
-
-      return (Opal.defs(self, '$new', $EINVAL_new$16 = function(name) {
-        var $iter = $EINVAL_new$16.$$p, $yield = $iter || nil, self = this, message = nil;
-
-        if ($iter) $EINVAL_new$16.$$p = null;
-        
-        
-        if (name == null) {
-          name = nil;
-        };
-        message = "Invalid argument";
-        if ($truthy(name)) {
-          message = $rb_plus(message, "" + " - " + (name))};
-        return $send2(self, $find_super(self, 'new', $EINVAL_new$16, false, true), 'new', [message], null);
-      }, $EINVAL_new$16.$$arity = -1), nil) && 'new'
-    })($nesting[0], $$($nesting, 'SystemCallError'), $nesting)
-  })($nesting[0], $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 0);
+  })('::', Error, $nesting);
+  $klass('::', $$$('Exception'), 'ScriptError');
+  $klass('::', $$$('ScriptError'), 'SyntaxError');
+  $klass('::', $$$('ScriptError'), 'LoadError');
+  $klass('::', $$$('ScriptError'), 'NotImplementedError');
+  $klass('::', $$$('Exception'), 'SystemExit');
+  $klass('::', $$$('Exception'), 'NoMemoryError');
+  $klass('::', $$$('Exception'), 'SignalException');
+  $klass('::', $$$('SignalException'), 'Interrupt');
+  $klass('::', $$$('Exception'), 'SecurityError');
+  $klass('::', $$$('Exception'), 'SystemStackError');
+  $klass('::', $$$('Exception'), 'StandardError');
+  $klass('::', $$$('StandardError'), 'EncodingError');
+  $klass('::', $$$('StandardError'), 'ZeroDivisionError');
+  $klass('::', $$$('StandardError'), 'NameError');
+  $klass('::', $$$('NameError'), 'NoMethodError');
+  $klass('::', $$$('StandardError'), 'RuntimeError');
+  $klass('::', $$$('RuntimeError'), 'FrozenError');
+  $klass('::', $$$('StandardError'), 'LocalJumpError');
+  $klass('::', $$$('StandardError'), 'TypeError');
+  $klass('::', $$$('StandardError'), 'ArgumentError');
+  $klass('::', $$$('ArgumentError'), 'UncaughtThrowError');
+  $klass('::', $$$('StandardError'), 'IndexError');
+  $klass('::', $$$('IndexError'), 'StopIteration');
+  $klass('::', $$$('StopIteration'), 'ClosedQueueError');
+  $klass('::', $$$('IndexError'), 'KeyError');
+  $klass('::', $$$('StandardError'), 'RangeError');
+  $klass('::', $$$('RangeError'), 'FloatDomainError');
+  $klass('::', $$$('StandardError'), 'IOError');
+  $klass('::', $$$('IOError'), 'EOFError');
+  $klass('::', $$$('StandardError'), 'SystemCallError');
+  $klass('::', $$$('StandardError'), 'RegexpError');
+  $klass('::', $$$('StandardError'), 'ThreadError');
+  $klass('::', $$$('StandardError'), 'FiberError');
+  $Object.$autoload("Errno", "corelib/error/errno");
+  (function($base, $super) {
     var self = $klass($base, $super, 'UncaughtThrowError');
 
-    var $nesting = [self].concat($parent_nesting), $UncaughtThrowError_initialize$17;
+    var $proto = self.$$prototype;
 
-    self.$$prototype.tag = nil;
+    $proto.tag = nil;
     
     self.$attr_reader("tag", "value");
-    return (Opal.def(self, '$initialize', $UncaughtThrowError_initialize$17 = function $$initialize(tag, value) {
-      var $iter = $UncaughtThrowError_initialize$17.$$p, $yield = $iter || nil, self = this;
+    return $def(self, '$initialize', function $$initialize(tag, value) {
+      var $yield = $$initialize.$$p || nil, self = this;
 
-      if ($iter) $UncaughtThrowError_initialize$17.$$p = null;
+      delete $$initialize.$$p;
       
       
-      if (value == null) {
-        value = nil;
-      };
+      if (value == null) value = nil;;
       self.tag = tag;
       self.value = value;
-      return $send2(self, $find_super(self, 'initialize', $UncaughtThrowError_initialize$17, false, true), 'initialize', ["" + "uncaught throw " + (self.tag.$inspect())], null);
-    }, $UncaughtThrowError_initialize$17.$$arity = -2), nil) && 'initialize';
-  })($nesting[0], $$($nesting, 'ArgumentError'), $nesting);
-  (function($base, $super, $parent_nesting) {
+      return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', ["uncaught throw " + (self.tag.$inspect())], null);
+    }, -2);
+  })('::', $$$('ArgumentError'));
+  (function($base, $super) {
     var self = $klass($base, $super, 'NameError');
 
-    var $nesting = [self].concat($parent_nesting), $NameError_initialize$18;
-
+    
     
     self.$attr_reader("name");
-    return (Opal.def(self, '$initialize', $NameError_initialize$18 = function $$initialize(message, name) {
-      var $iter = $NameError_initialize$18.$$p, $yield = $iter || nil, self = this;
+    return $def(self, '$initialize', function $$initialize(message, name) {
+      var $yield = $$initialize.$$p || nil, self = this;
 
-      if ($iter) $NameError_initialize$18.$$p = null;
+      delete $$initialize.$$p;
       
       
-      if (name == null) {
-        name = nil;
-      };
-      $send2(self, $find_super(self, 'initialize', $NameError_initialize$18, false, true), 'initialize', [message], null);
+      if (name == null) name = nil;;
+      $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [message], null);
       return (self.name = name);
-    }, $NameError_initialize$18.$$arity = -2), nil) && 'initialize';
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, -2);
+  })('::', null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'NoMethodError');
 
-    var $nesting = [self].concat($parent_nesting), $NoMethodError_initialize$19;
-
+    
     
     self.$attr_reader("args");
-    return (Opal.def(self, '$initialize', $NoMethodError_initialize$19 = function $$initialize(message, name, args) {
-      var $iter = $NoMethodError_initialize$19.$$p, $yield = $iter || nil, self = this;
+    return $def(self, '$initialize', function $$initialize(message, name, args) {
+      var $yield = $$initialize.$$p || nil, self = this;
 
-      if ($iter) $NoMethodError_initialize$19.$$p = null;
+      delete $$initialize.$$p;
       
       
-      if (name == null) {
-        name = nil;
-      };
+      if (name == null) name = nil;;
       
-      if (args == null) {
-        args = [];
-      };
-      $send2(self, $find_super(self, 'initialize', $NoMethodError_initialize$19, false, true), 'initialize', [message, name], null);
+      if (args == null) args = [];;
+      $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [message, name], null);
       return (self.args = args);
-    }, $NoMethodError_initialize$19.$$arity = -2), nil) && 'initialize';
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, -2);
+  })('::', null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'StopIteration');
 
-    var $nesting = [self].concat($parent_nesting);
-
+    
     return self.$attr_reader("result")
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+  })('::', null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'KeyError');
 
-    var $nesting = [self].concat($parent_nesting), $KeyError_initialize$20, $KeyError_receiver$21, $KeyError_key$22;
+    var $proto = self.$$prototype;
 
-    self.$$prototype.receiver = self.$$prototype.key = nil;
+    $proto.receiver = $proto.key = nil;
     
     
-    Opal.def(self, '$initialize', $KeyError_initialize$20 = function $$initialize(message, $kwargs) {
-      var receiver, key, $iter = $KeyError_initialize$20.$$p, $yield = $iter || nil, self = this;
+    $def(self, '$initialize', function $$initialize(message, $kwargs) {
+      var receiver, key, $yield = $$initialize.$$p || nil, self = this;
 
-      if ($iter) $KeyError_initialize$20.$$p = null;
+      delete $$initialize.$$p;
       
       
       if ($kwargs == null) {
@@ -6022,155 +6044,132 @@ Opal.modules["corelib/error"] = function(Opal) {
       };
       
       receiver = $kwargs.$$smap["receiver"];
-      if (receiver == null) {
-        receiver = nil
-      };
+      if (receiver == null) receiver = nil;
       
       key = $kwargs.$$smap["key"];
-      if (key == null) {
-        key = nil
-      };
-      $send2(self, $find_super(self, 'initialize', $KeyError_initialize$20, false, true), 'initialize', [message], null);
+      if (key == null) key = nil;
+      $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [message], null);
       self.receiver = receiver;
       return (self.key = key);
-    }, $KeyError_initialize$20.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$receiver', $KeyError_receiver$21 = function $$receiver() {
-      var self = this, $ret_or_4 = nil;
+    $def(self, '$receiver', function $$receiver() {
+      var self = this, $ret_or_1 = nil;
 
-      if ($truthy(($ret_or_4 = self.receiver))) {
-        return $ret_or_4
+      if ($truthy(($ret_or_1 = self.receiver))) {
+        return $ret_or_1
       } else {
-        return self.$raise($$($nesting, 'ArgumentError'), "no receiver is available")
+        return $Kernel.$raise($$$('ArgumentError'), "no receiver is available")
       }
-    }, $KeyError_receiver$21.$$arity = 0);
-    return (Opal.def(self, '$key', $KeyError_key$22 = function $$key() {
-      var self = this, $ret_or_5 = nil;
+    }, 0);
+    return $def(self, '$key', function $$key() {
+      var self = this, $ret_or_1 = nil;
 
-      if ($truthy(($ret_or_5 = self.key))) {
-        return $ret_or_5
+      if ($truthy(($ret_or_1 = self.key))) {
+        return $ret_or_1
       } else {
-        return self.$raise($$($nesting, 'ArgumentError'), "no key is available")
+        return $Kernel.$raise($$$('ArgumentError'), "no key is available")
       }
-    }, $KeyError_key$22.$$arity = 0), nil) && 'key';
-  })($nesting[0], null, $nesting);
+    }, 0);
+  })('::', null);
   return (function($base, $parent_nesting) {
     var self = $module($base, 'JS');
 
     var $nesting = [self].concat($parent_nesting);
 
-    return (function($base, $super, $parent_nesting) {
-      var self = $klass($base, $super, 'Error');
+    return ($klass($nesting[0], null, 'Error'), nil)
+  })('::', $nesting);
+};
 
-      var $nesting = [self].concat($parent_nesting);
-
-      return nil
-    })($nesting[0], null, $nesting)
-  })($nesting[0], $nesting);
-};
-
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/constants"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$;
+Opal.modules["corelib/constants"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var nil = Opal.nil, $$$ = Opal.$$$, $const_set = Opal.const_set;
 
   
-  Opal.const_set($nesting[0], 'RUBY_PLATFORM', "opal");
-  Opal.const_set($nesting[0], 'RUBY_ENGINE', "opal");
-  Opal.const_set($nesting[0], 'RUBY_VERSION', "3.0.2");
-  Opal.const_set($nesting[0], 'RUBY_ENGINE_VERSION', "1.3.0.dev");
-  Opal.const_set($nesting[0], 'RUBY_RELEASE_DATE', "2021-08-11");
-  Opal.const_set($nesting[0], 'RUBY_PATCHLEVEL', 0);
-  Opal.const_set($nesting[0], 'RUBY_REVISION', "0");
-  Opal.const_set($nesting[0], 'RUBY_COPYRIGHT', "opal - Copyright (C) 2013-2021 Adam Beynon and the Opal contributors");
-  return Opal.const_set($nesting[0], 'RUBY_DESCRIPTION', "" + "opal " + ($$($nesting, 'RUBY_ENGINE_VERSION')) + " (" + ($$($nesting, 'RUBY_RELEASE_DATE')) + " revision " + ($$($nesting, 'RUBY_REVISION')) + ")");
+  $const_set('::', 'RUBY_PLATFORM', "opal");
+  $const_set('::', 'RUBY_ENGINE', "opal");
+  $const_set('::', 'RUBY_VERSION', "3.1.0");
+  $const_set('::', 'RUBY_ENGINE_VERSION', "1.5.0.dev");
+  $const_set('::', 'RUBY_RELEASE_DATE', "2022-03-23");
+  $const_set('::', 'RUBY_PATCHLEVEL', 0);
+  $const_set('::', 'RUBY_REVISION', "0");
+  $const_set('::', 'RUBY_COPYRIGHT', "opal - Copyright (C) 2013-2021 Adam Beynon and the Opal contributors");
+  return $const_set('::', 'RUBY_DESCRIPTION', "opal " + ($$$('RUBY_ENGINE_VERSION')) + " (" + ($$$('RUBY_RELEASE_DATE')) + " revision " + ($$$('RUBY_REVISION')) + ")");
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/base"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$;
+Opal.modules["opal/base"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var nil = Opal.nil, $Object = Opal.Object;
 
-  Opal.add_stubs(['$require']);
+  Opal.add_stubs('require');
   
-  self.$require("corelib/runtime");
-  self.$require("corelib/helpers");
-  self.$require("corelib/module");
-  self.$require("corelib/class");
-  self.$require("corelib/basic_object");
-  self.$require("corelib/kernel");
-  self.$require("corelib/error");
-  return self.$require("corelib/constants");
+  $Object.$require("corelib/runtime");
+  $Object.$require("corelib/helpers");
+  $Object.$require("corelib/module");
+  $Object.$require("corelib/class");
+  $Object.$require("corelib/basic_object");
+  $Object.$require("corelib/kernel");
+  $Object.$require("corelib/main");
+  $Object.$require("corelib/error");
+  return $Object.$require("corelib/constants");
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/nil"] = function(Opal) {
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $hash2 = Opal.hash2, $alias = Opal.alias, $truthy = Opal.truthy;
+Opal.modules["corelib/nil"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $Kernel = Opal.Kernel, $def = Opal.def, $hash2 = Opal.hash2, $NilClass = Opal.NilClass, $truthy = Opal.truthy, $rb_gt = Opal.rb_gt, $alias = Opal.alias;
 
-  Opal.add_stubs(['$raise', '$name', '$new', '$>', '$length', '$Rational']);
-  
-  (function($base, $super, $parent_nesting) {
+  Opal.add_stubs('raise,name,new,>,length,Rational');
+  return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'NilClass');
 
-    var $nesting = [self].concat($parent_nesting), $NilClass_$excl$2, $NilClass_$$3, $NilClass_$$4, $NilClass_$$5, $NilClass_$eq_eq$6, $NilClass_dup$7, $NilClass_clone$8, $NilClass_inspect$9, $NilClass_nil$ques$10, $NilClass_singleton_class$11, $NilClass_to_a$12, $NilClass_to_h$13, $NilClass_to_i$14, $NilClass_to_s$15, $NilClass_to_c$16, $NilClass_rationalize$17, $NilClass_to_r$18, $NilClass_instance_variables$19;
+    var $nesting = [self].concat($parent_nesting);
 
     
     self.$$prototype.$$meta = self;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting), $allocate$1;
-
       
       
-      Opal.def(self, '$allocate', $allocate$1 = function $$allocate() {
+      
+      $def(self, '$allocate', function $$allocate() {
         var self = this;
 
-        return self.$raise($$($nesting, 'TypeError'), "" + "allocator undefined for " + (self.$name()))
-      }, $allocate$1.$$arity = 0);
+        return $Kernel.$raise($$$('TypeError'), "allocator undefined for " + (self.$name()))
+      }, 0);
       
       
       Opal.udef(self, '$' + "new");;
       return nil;;
     })(Opal.get_singleton_class(self), $nesting);
     
-    Opal.def(self, '$!', $NilClass_$excl$2 = function() {
-      var self = this;
-
+    $def(self, '$!', function $NilClass_$excl$1() {
+      
       return true
-    }, $NilClass_$excl$2.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$&', $NilClass_$$3 = function(other) {
-      var self = this;
-
+    $def(self, '$&', function $NilClass_$$2(other) {
+      
       return false
-    }, $NilClass_$$3.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$|', $NilClass_$$4 = function(other) {
-      var self = this;
-
+    $def(self, '$|', function $NilClass_$$3(other) {
+      
       return other !== false && other !== nil;
-    }, $NilClass_$$4.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$^', $NilClass_$$5 = function(other) {
-      var self = this;
-
+    $def(self, '$^', function $NilClass_$$4(other) {
+      
       return other !== false && other !== nil;
-    }, $NilClass_$$5.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$==', $NilClass_$eq_eq$6 = function(other) {
-      var self = this;
-
+    $def(self, '$==', function $NilClass_$eq_eq$5(other) {
+      
       return other === nil;
-    }, $NilClass_$eq_eq$6.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$dup', $NilClass_dup$7 = function $$dup() {
-      var self = this;
-
+    $def(self, '$dup', function $$dup() {
+      
       return nil
-    }, $NilClass_dup$7.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$clone', $NilClass_clone$8 = function $$clone($kwargs) {
-      var freeze, self = this;
+    $def(self, '$clone', function $$clone($kwargs) {
+      var freeze;
 
       
       
@@ -6181,101 +6180,90 @@ Opal.modules["corelib/nil"] = function(Opal) {
       };
       
       freeze = $kwargs.$$smap["freeze"];
-      if (freeze == null) {
-        freeze = true
-      };
+      if (freeze == null) freeze = true;
       return nil;
-    }, $NilClass_clone$8.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$inspect', $NilClass_inspect$9 = function $$inspect() {
-      var self = this;
-
+    $def(self, '$inspect', function $$inspect() {
+      
       return "nil"
-    }, $NilClass_inspect$9.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$nil?', $NilClass_nil$ques$10 = function() {
-      var self = this;
-
+    $def(self, '$nil?', function $NilClass_nil$ques$6() {
+      
       return true
-    }, $NilClass_nil$ques$10.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$singleton_class', $NilClass_singleton_class$11 = function $$singleton_class() {
-      var self = this;
-
-      return $$($nesting, 'NilClass')
-    }, $NilClass_singleton_class$11.$$arity = 0);
+    $def(self, '$singleton_class', function $$singleton_class() {
+      
+      return $NilClass
+    }, 0);
     
-    Opal.def(self, '$to_a', $NilClass_to_a$12 = function $$to_a() {
-      var self = this;
-
+    $def(self, '$to_a', function $$to_a() {
+      
       return []
-    }, $NilClass_to_a$12.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_h', $NilClass_to_h$13 = function $$to_h() {
-      var self = this;
-
+    $def(self, '$to_h', function $$to_h() {
+      
       return Opal.hash();
-    }, $NilClass_to_h$13.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_i', $NilClass_to_i$14 = function $$to_i() {
-      var self = this;
-
+    $def(self, '$to_i', function $$to_i() {
+      
       return 0
-    }, $NilClass_to_i$14.$$arity = 0);
-    $alias(self, "to_f", "to_i");
+    }, 0);
     
-    Opal.def(self, '$to_s', $NilClass_to_s$15 = function $$to_s() {
-      var self = this;
-
+    $def(self, '$to_s', function $$to_s() {
+      
       return ""
-    }, $NilClass_to_s$15.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_c', $NilClass_to_c$16 = function $$to_c() {
-      var self = this;
-
-      return $$($nesting, 'Complex').$new(0, 0)
-    }, $NilClass_to_c$16.$$arity = 0);
+    $def(self, '$to_c', function $$to_c() {
+      
+      return $$$('Complex').$new(0, 0)
+    }, 0);
     
-    Opal.def(self, '$rationalize', $NilClass_rationalize$17 = function $$rationalize($a) {
-      var $post_args, args, self = this;
+    $def(self, '$rationalize', function $$rationalize($a) {
+      var $post_args, args;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
       if ($truthy($rb_gt(args.$length(), 1))) {
-        self.$raise($$($nesting, 'ArgumentError'))};
-      return self.$Rational(0, 1);
-    }, $NilClass_rationalize$17.$$arity = -1);
+        $Kernel.$raise($$$('ArgumentError'))
+      };
+      return $Kernel.$Rational(0, 1);
+    }, -1);
     
-    Opal.def(self, '$to_r', $NilClass_to_r$18 = function $$to_r() {
-      var self = this;
-
-      return self.$Rational(0, 1)
-    }, $NilClass_to_r$18.$$arity = 0);
-    return (Opal.def(self, '$instance_variables', $NilClass_instance_variables$19 = function $$instance_variables() {
-      var self = this;
-
+    $def(self, '$to_r', function $$to_r() {
+      
+      return $Kernel.$Rational(0, 1)
+    }, 0);
+    
+    $def(self, '$instance_variables', function $$instance_variables() {
+      
       return []
-    }, $NilClass_instance_variables$19.$$arity = 0), nil) && 'instance_variables';
-  })($nesting[0], null, $nesting);
-  return Opal.const_set($nesting[0], 'NIL', nil);
+    }, 0);
+    return $alias(self, "to_f", "to_i");
+  })('::', null, $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/boolean"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $alias = Opal.alias, $hash2 = Opal.hash2, $truthy = Opal.truthy, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["corelib/boolean"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  "use strict";
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $Kernel = Opal.Kernel, $def = Opal.def, $hash2 = Opal.hash2, $truthy = Opal.truthy, $send2 = Opal.send2, $find_super = Opal.find_super, $to_a = Opal.to_a, $alias = Opal.alias;
 
-  Opal.add_stubs(['$raise', '$name']);
+  Opal.add_stubs('raise,name');
   
   (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Boolean');
 
-    var $nesting = [self].concat($parent_nesting), $Boolean___id__$2, $Boolean_$excl$3, $Boolean_$$4, $Boolean_$$5, $Boolean_$$6, $Boolean_$eq_eq$7, $Boolean_singleton_class$8, $Boolean_to_s$9, $Boolean_dup$10, $Boolean_clone$11, $Boolean_method_missing$12, $Boolean_respond_to_missing$ques$13;
+    var $nesting = [self].concat($parent_nesting);
 
     
-    Opal.defineProperty(self.$$prototype, '$$is_boolean', true);
+    Opal.prop(self.$$prototype, '$$is_boolean', true);
     
     var properties = ['$$class', '$$meta'];
 
@@ -6302,80 +6290,75 @@ Opal.modules["corelib/boolean"] = function(Opal) {
     });
   ;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting), $allocate$1;
-
       
       
-      Opal.def(self, '$allocate', $allocate$1 = function $$allocate() {
+      
+      $def(self, '$allocate', function $$allocate() {
         var self = this;
 
-        return self.$raise($$($nesting, 'TypeError'), "" + "allocator undefined for " + (self.$name()))
-      }, $allocate$1.$$arity = 0);
+        return $Kernel.$raise($$$('TypeError'), "allocator undefined for " + (self.$name()))
+      }, 0);
       
       
       Opal.udef(self, '$' + "new");;
       return nil;;
     })(Opal.get_singleton_class(self), $nesting);
     
-    Opal.def(self, '$__id__', $Boolean___id__$2 = function $$__id__() {
+    $def(self, '$__id__', function $$__id__() {
       var self = this;
 
       return self.valueOf() ? 2 : 0;
-    }, $Boolean___id__$2.$$arity = 0);
-    $alias(self, "object_id", "__id__");
+    }, 0);
     
-    Opal.def(self, '$!', $Boolean_$excl$3 = function() {
+    $def(self, '$!', function $Boolean_$excl$1() {
       var self = this;
 
       return self != true;
-    }, $Boolean_$excl$3.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$&', $Boolean_$$4 = function(other) {
+    $def(self, '$&', function $Boolean_$$2(other) {
       var self = this;
 
       return (self == true) ? (other !== false && other !== nil) : false;
-    }, $Boolean_$$4.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$|', $Boolean_$$5 = function(other) {
+    $def(self, '$|', function $Boolean_$$3(other) {
       var self = this;
 
       return (self == true) ? true : (other !== false && other !== nil);
-    }, $Boolean_$$5.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$^', $Boolean_$$6 = function(other) {
+    $def(self, '$^', function $Boolean_$$4(other) {
       var self = this;
 
       return (self == true) ? (other === false || other === nil) : (other !== false && other !== nil);
-    }, $Boolean_$$6.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$==', $Boolean_$eq_eq$7 = function(other) {
+    $def(self, '$==', function $Boolean_$eq_eq$5(other) {
       var self = this;
 
       return (self == true) === other.valueOf();
-    }, $Boolean_$eq_eq$7.$$arity = 1);
-    $alias(self, "equal?", "==");
-    $alias(self, "eql?", "==");
+    }, 1);
     
-    Opal.def(self, '$singleton_class', $Boolean_singleton_class$8 = function $$singleton_class() {
+    $def(self, '$singleton_class', function $$singleton_class() {
       var self = this;
 
       return self.$$meta;
-    }, $Boolean_singleton_class$8.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_s', $Boolean_to_s$9 = function $$to_s() {
+    $def(self, '$to_s', function $$to_s() {
       var self = this;
 
       return (self == true) ? 'true' : 'false';
-    }, $Boolean_to_s$9.$$arity = 0);
-    $alias(self, "inspect", "to_s");
+    }, 0);
     
-    Opal.def(self, '$dup', $Boolean_dup$10 = function $$dup() {
+    $def(self, '$dup', function $$dup() {
       var self = this;
 
       return self
-    }, $Boolean_dup$10.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$clone', $Boolean_clone$11 = function $$clone($kwargs) {
+    $def(self, '$clone', function $$clone($kwargs) {
       var freeze, self = this;
 
       
@@ -6387,79 +6370,53 @@ Opal.modules["corelib/boolean"] = function(Opal) {
       };
       
       freeze = $kwargs.$$smap["freeze"];
-      if (freeze == null) {
-        freeze = true
-      };
+      if (freeze == null) freeze = true;
       return self;
-    }, $Boolean_clone$11.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$method_missing', $Boolean_method_missing$12 = function $$method_missing(method, $a) {
-      var $iter = $Boolean_method_missing$12.$$p, block = $iter || nil, $post_args, args, self = this, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+    $def(self, '$method_missing', function $$method_missing(method, $a) {
+      var block = $$method_missing.$$p || nil, $post_args, args, self = this;
 
-      if ($iter) $Boolean_method_missing$12.$$p = null;
-      // Prepare super implicit arguments
-      for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-        $zuper[$zuper_i] = arguments[$zuper_i];
-      }
-      
+      delete $$method_missing.$$p;
       
-      if ($iter) $Boolean_method_missing$12.$$p = null;;
+      ;
       
-      $post_args = Opal.slice.call(arguments, 1, arguments.length);
+      $post_args = Opal.slice.call(arguments, 1);
       
       args = $post_args;;
       var body = self.$$class.$$prototype['$' + method];
-      if ($truthy(typeof body !== 'undefined' && !body.$$stub)) {
-      } else {
-        $send2(self, $find_super(self, 'method_missing', $Boolean_method_missing$12, false, true), 'method_missing', $zuper, $iter)
+      if (!$truthy(typeof body !== 'undefined' && !body.$$stub)) {
+        $send2(self, $find_super(self, 'method_missing', $$method_missing, false, true), 'method_missing', [method].concat($to_a(args)), block)
       };
       return Opal.send(self, body, args, block);
-    }, $Boolean_method_missing$12.$$arity = -2);
-    return (Opal.def(self, '$respond_to_missing?', $Boolean_respond_to_missing$ques$13 = function(method, _include_all) {
+    }, -2);
+    
+    $def(self, '$respond_to_missing?', function $Boolean_respond_to_missing$ques$6(method, _include_all) {
       var self = this;
 
       
       
-      if (_include_all == null) {
-        _include_all = false;
-      };
+      if (_include_all == null) _include_all = false;;
       var body = self.$$class.$$prototype['$' + method];
       return typeof body !== 'undefined' && !body.$$stub;;
-    }, $Boolean_respond_to_missing$ques$13.$$arity = -2), nil) && 'respond_to_missing?';
-  })($nesting[0], Boolean, $nesting);
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'TrueClass');
-
-    var $nesting = [self].concat($parent_nesting);
-
-    return nil
-  })($nesting[0], $$($nesting, 'Boolean'), $nesting);
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'FalseClass');
-
-    var $nesting = [self].concat($parent_nesting);
-
-    return nil
-  })($nesting[0], $$($nesting, 'Boolean'), $nesting);
-  Opal.const_set($nesting[0], 'TRUE', true);
-  return Opal.const_set($nesting[0], 'FALSE', false);
+    }, -2);
+    $alias(self, "eql?", "==");
+    $alias(self, "equal?", "==");
+    $alias(self, "inspect", "to_s");
+    return $alias(self, "object_id", "__id__");
+  })('::', Boolean, $nesting);
+  $klass('::', $$$('Boolean'), 'TrueClass');
+  return ($klass('::', $$$('Boolean'), 'FalseClass'), nil);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/comparable"] = function(Opal) {
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $falsy = Opal.falsy, $module = Opal.module, $truthy = Opal.truthy;
+Opal.modules["corelib/comparable"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var nil = Opal.nil, $$$ = Opal.$$$, $truthy = Opal.truthy, $module = Opal.module, $rb_gt = Opal.rb_gt, $rb_lt = Opal.rb_lt, $eqeqeq = Opal.eqeqeq, $Kernel = Opal.Kernel, $def = Opal.def;
 
-  Opal.add_stubs(['$>', '$<', '$===', '$raise', '$class', '$<=>', '$equal?']);
-  return (function($base, $parent_nesting) {
+  Opal.add_stubs('>,<,===,raise,class,<=>,equal?');
+  return (function($base) {
     var self = $module($base, 'Comparable');
 
-    var $nesting = [self].concat($parent_nesting), $Comparable_$eq_eq$1, $Comparable_$gt$2, $Comparable_$gt_eq$3, $Comparable_$lt$4, $Comparable_$lt_eq$5, $Comparable_between$ques$6, $Comparable_clamp$7, $case = nil;
+    var $ret_or_1 = nil;
 
     
     
@@ -6473,25 +6430,24 @@ Opal.modules["corelib/comparable"] = function(Opal) {
 
     function fail_comparison(lhs, rhs) {
       var class_name;
-      (function() {$case = rhs;
-    if (nil['$===']($case) || true['$===']($case) || false['$===']($case) || $$($nesting, 'Integer')['$===']($case) || $$($nesting, 'Float')['$===']($case)) {return class_name = rhs.$inspect();}
-    else {return class_name = rhs.$$class;}})()
-      self.$raise($$($nesting, 'ArgumentError'), "" + "comparison of " + ((lhs).$class()) + " with " + (class_name) + " failed")
+      (($eqeqeq(nil, ($ret_or_1 = rhs)) || (($eqeqeq(true, $ret_or_1) || (($eqeqeq(false, $ret_or_1) || (($eqeqeq($$$('Integer'), $ret_or_1) || ($eqeqeq($$$('Float'), $ret_or_1))))))))) ? (class_name = rhs.$inspect()) : (class_name = rhs.$$class))
+      $Kernel.$raise($$$('ArgumentError'), "comparison of " + ((lhs).$class()) + " with " + (class_name) + " failed")
     }
 
     function cmp_or_fail(lhs, rhs) {
       var cmp = (lhs)['$<=>'](rhs);
-      if ($falsy(cmp)) fail_comparison(lhs, rhs);
+      if (!$truthy(cmp)) fail_comparison(lhs, rhs);
       return normalize(cmp);
     }
   ;
     
-    Opal.def(self, '$==', $Comparable_$eq_eq$1 = function(other) {
+    $def(self, '$==', function $Comparable_$eq_eq$1(other) {
       var self = this, cmp = nil;
 
       
       if ($truthy(self['$equal?'](other))) {
-        return true};
+        return true
+      };
       
       if (self["$<=>"] == Opal.Kernel["$<=>"]) {
         return false;
@@ -6503,55 +6459,54 @@ Opal.modules["corelib/comparable"] = function(Opal) {
         return false;
       }
     ;
-      if ($truthy((cmp = self['$<=>'](other)))) {
-      } else {
+      if (!$truthy((cmp = self['$<=>'](other)))) {
         return false
       };
       return normalize(cmp) == 0;;
-    }, $Comparable_$eq_eq$1.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$>', $Comparable_$gt$2 = function(other) {
+    $def(self, '$>', function $Comparable_$gt$2(other) {
       var self = this;
 
       return cmp_or_fail(self, other) > 0;
-    }, $Comparable_$gt$2.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$>=', $Comparable_$gt_eq$3 = function(other) {
+    $def(self, '$>=', function $Comparable_$gt_eq$3(other) {
       var self = this;
 
       return cmp_or_fail(self, other) >= 0;
-    }, $Comparable_$gt_eq$3.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$<', $Comparable_$lt$4 = function(other) {
+    $def(self, '$<', function $Comparable_$lt$4(other) {
       var self = this;
 
       return cmp_or_fail(self, other) < 0;
-    }, $Comparable_$lt$4.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$<=', $Comparable_$lt_eq$5 = function(other) {
+    $def(self, '$<=', function $Comparable_$lt_eq$5(other) {
       var self = this;
 
       return cmp_or_fail(self, other) <= 0;
-    }, $Comparable_$lt_eq$5.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$between?', $Comparable_between$ques$6 = function(min, max) {
+    $def(self, '$between?', function $Comparable_between$ques$6(min, max) {
       var self = this;
 
       
       if ($rb_lt(self, min)) {
-        return false};
+        return false
+      };
       if ($rb_gt(self, max)) {
-        return false};
+        return false
+      };
       return true;
-    }, $Comparable_between$ques$6.$$arity = 2);
-    return (Opal.def(self, '$clamp', $Comparable_clamp$7 = function $$clamp(min, max) {
+    }, 2);
+    return $def(self, '$clamp', function $$clamp(min, max) {
       var self = this;
 
       
       
-      if (max == null) {
-        max = nil;
-      };
+      if (max == null) max = nil;;
       
       var c, excl;
 
@@ -6560,7 +6515,7 @@ Opal.modules["corelib/comparable"] = function(Opal) {
         // provide a single Range argument instead of 2 Comparables.
 
         if (!Opal.is_a(min, Opal.Range)) {
-          self.$raise($$($nesting, 'TypeError'), "" + "wrong argument type " + (min.$class()) + " (expected Range)")
+          $Kernel.$raise($$$('TypeError'), "wrong argument type " + (min.$class()) + " (expected Range)")
         }
 
         excl = min.excl;
@@ -6568,12 +6523,12 @@ Opal.modules["corelib/comparable"] = function(Opal) {
         min = min.begin;
 
         if (max !== nil && excl) {
-          self.$raise($$($nesting, 'ArgumentError'), "cannot clamp with an exclusive range")
+          $Kernel.$raise($$$('ArgumentError'), "cannot clamp with an exclusive range")
         }
       }
 
       if (min !== nil && max !== nil && cmp_or_fail(min, max) > 0) {
-        self.$raise($$($nesting, 'ArgumentError'), "min argument must be smaller than max argument")
+        $Kernel.$raise($$$('ArgumentError'), "min argument must be smaller than max argument")
       }
 
       if (min !== nil) {
@@ -6591,87 +6546,67 @@ Opal.modules["corelib/comparable"] = function(Opal) {
 
       return self;
     ;
-    }, $Comparable_clamp$7.$$arity = -2), nil) && 'clamp';
-  })($nesting[0], $nesting)
+    }, -2);
+  })('::')
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/regexp"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $coerce_to = Opal.coerce_to, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $truthy = Opal.truthy, $gvars = Opal.gvars, $alias = Opal.alias, $send = Opal.send;
+Opal.modules["corelib/regexp"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $coerce_to = Opal.coerce_to, $klass = Opal.klass, $const_set = Opal.const_set, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def, $truthy = Opal.truthy, $gvars = Opal.gvars, $Kernel = Opal.Kernel, $Opal = Opal.Opal, $alias = Opal.alias, $send = Opal.send, $hash2 = Opal.hash2, $rb_plus = Opal.rb_plus, $rb_ge = Opal.rb_ge, $to_a = Opal.to_a, $eqeqeq = Opal.eqeqeq, $rb_minus = Opal.rb_minus;
 
-  Opal.add_stubs(['$nil?', '$[]', '$raise', '$escape', '$options', '$to_str', '$new', '$join', '$coerce_to!', '$!', '$match', '$coerce_to?', '$begin', '$uniq', '$map', '$scan', '$source', '$to_proc', '$transform_values', '$group_by', '$each_with_index', '$+', '$last', '$=~', '$attr_reader', '$include?', '$names', '$regexp', '$named_captures', '$===', '$captures', '$-', '$inspect', '$empty?', '$each', '$to_a']);
+  Opal.add_stubs('nil?,[],raise,escape,options,to_str,new,join,coerce_to!,!,match,coerce_to?,begin,uniq,map,scan,source,to_proc,transform_values,group_by,each_with_index,+,last,=~,attr_reader,>=,length,is_a?,include?,names,regexp,named_captures,===,captures,-,inspect,empty?,each,to_a');
   
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'RegexpError');
-
-    var $nesting = [self].concat($parent_nesting);
-
-    return nil
-  })($nesting[0], $$($nesting, 'StandardError'), $nesting);
+  $klass('::', $$$('StandardError'), 'RegexpError');
   (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Regexp');
 
-    var $nesting = [self].concat($parent_nesting), $Regexp_$eq_eq$6, $Regexp_$eq_eq_eq$7, $Regexp_$eq_tilde$8, $Regexp_inspect$9, $Regexp_match$10, $Regexp_match$ques$11, $Regexp_names$12, $Regexp_named_captures$13, $Regexp_$$16, $Regexp_source$17, $Regexp_options$18, $Regexp_casefold$ques$19;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
-    Opal.const_set($nesting[0], 'IGNORECASE', 1);
-    Opal.const_set($nesting[0], 'EXTENDED', 2);
-    Opal.const_set($nesting[0], 'MULTILINE', 4);
-    Opal.defineProperty(self.$$prototype, '$$is_regexp', true);
+    $const_set(self, 'IGNORECASE', 1);
+    $const_set(self, 'EXTENDED', 2);
+    $const_set(self, 'MULTILINE', 4);
+    Opal.prop(self.$$prototype, '$$is_regexp', true);
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting), $allocate$1, $escape$2, $last_match$3, $union$4, $new$5;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
       
-      Opal.def(self, '$allocate', $allocate$1 = function $$allocate() {
-        var $iter = $allocate$1.$$p, $yield = $iter || nil, self = this, allocated = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+      $def(self, '$allocate', function $$allocate() {
+        var $yield = $$allocate.$$p || nil, self = this, allocated = nil;
 
-        if ($iter) $allocate$1.$$p = null;
-        // Prepare super implicit arguments
-        for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-          $zuper[$zuper_i] = arguments[$zuper_i];
-        }
+        delete $$allocate.$$p;
         
-        allocated = $send2(self, $find_super(self, 'allocate', $allocate$1, false, true), 'allocate', $zuper, $iter);
+        allocated = $send2(self, $find_super(self, 'allocate', $$allocate, false, true), 'allocate', [], $yield);
         allocated.uninitialized = true;
         return allocated;
-      }, $allocate$1.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$escape', $escape$2 = function $$escape(string) {
-        var self = this;
-
+      $def(self, '$escape', function $$escape(string) {
+        
         return Opal.escape_regexp(string);
-      }, $escape$2.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$last_match', $last_match$3 = function $$last_match(n) {
-        var self = this;
-        if ($gvars["~"] == null) $gvars["~"] = nil;
+      $def(self, '$last_match', function $$last_match(n) {
+                if ($gvars["~"] == null) $gvars["~"] = nil;
 
         
         
-        if (n == null) {
-          n = nil;
-        };
+        if (n == null) n = nil;;
         if ($truthy(n['$nil?']())) {
           return $gvars["~"]
-        } else {
+        } else if ($truthy($gvars["~"])) {
           return $gvars["~"]['$[]'](n)
+        } else {
+          return nil
         };
-      }, $last_match$3.$$arity = -1);
-      $alias(self, "quote", "escape");
+      }, -1);
       
-      Opal.def(self, '$union', $union$4 = function $$union($a) {
+      $def(self, '$union', function $$union($a) {
         var $post_args, parts, self = this;
 
         
         
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
+        $post_args = Opal.slice.call(arguments);
         
         parts = $post_args;;
         
@@ -6686,7 +6621,7 @@ Opal.modules["corelib/regexp"] = function(Opal) {
         // cover the 2 arrays passed as arguments case
         is_first_part_array = parts[0].$$is_array;
         if (parts.length > 1 && is_first_part_array) {
-          self.$raise($$($nesting, 'TypeError'), "no implicit conversion of Array into String")
+          $Kernel.$raise($$$('TypeError'), "no implicit conversion of Array into String")
         }
         // deal with splat issues (related to https://github.com/opal/opal/issues/858)
         if (is_first_part_array) {
@@ -6702,7 +6637,7 @@ Opal.modules["corelib/regexp"] = function(Opal) {
           else if (part.$$is_regexp) {
             each_part_options = (part).$options();
             if (options != undefined && options != each_part_options) {
-              self.$raise($$($nesting, 'TypeError'), "All expressions must use the same options")
+              $Kernel.$raise($$$('TypeError'), "All expressions must use the same options")
             }
             options = each_part_options;
             quoted_validated.push('('+part.source+')');
@@ -6713,11 +6648,10 @@ Opal.modules["corelib/regexp"] = function(Opal) {
         }
       ;
         return self.$new((quoted_validated).$join("|"), options);
-      }, $union$4.$$arity = -1);
+      }, -1);
       
-      Opal.def(self, '$new', $new$5 = function(regexp, options) {
-        var self = this;
-
+      $def(self, '$new', function $new$1(regexp, options) {
+        
         
         ;
         
@@ -6725,20 +6659,22 @@ Opal.modules["corelib/regexp"] = function(Opal) {
           return new RegExp(regexp);
         }
 
-        regexp = $$($nesting, 'Opal')['$coerce_to!'](regexp, $$($nesting, 'String'), "to_str");
+        regexp = $Opal['$coerce_to!'](regexp, $$$('String'), "to_str");
 
         if (regexp.charAt(regexp.length - 1) === '\\' && regexp.charAt(regexp.length - 2) !== '\\') {
-          self.$raise($$($nesting, 'RegexpError'), "" + "too short escape sequence: /" + (regexp) + "/")
+          $Kernel.$raise($$$('RegexpError'), "too short escape sequence: /" + (regexp) + "/")
         }
 
+        regexp = regexp.replace('\\A', '^').replace('\\z', '$')
+
         if (options === undefined || options['$!']()) {
           return new RegExp(regexp);
         }
 
         if (options.$$is_number) {
           var temp = '';
-          if ($$($nesting, 'IGNORECASE') & options) { temp += 'i'; }
-          if ($$($nesting, 'MULTILINE')  & options) { temp += 'm'; }
+          if ($$('IGNORECASE') & options) { temp += 'i'; }
+          if ($$('MULTILINE')  & options) { temp += 'm'; }
           options = temp;
         }
         else {
@@ -6747,23 +6683,24 @@ Opal.modules["corelib/regexp"] = function(Opal) {
 
         return new RegExp(regexp, options);
       ;
-      }, $new$5.$$arity = -2);
-      return $alias(self, "compile", "new");
+      }, -2);
+      $alias(self, "compile", "new");
+      return $alias(self, "quote", "escape");
     })(Opal.get_singleton_class(self), $nesting);
     
-    Opal.def(self, '$==', $Regexp_$eq_eq$6 = function(other) {
+    $def(self, '$==', function $Regexp_$eq_eq$2(other) {
       var self = this;
 
       return other instanceof RegExp && self.toString() === other.toString();
-    }, $Regexp_$eq_eq$6.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$===', $Regexp_$eq_eq_eq$7 = function(string) {
+    $def(self, '$===', function $Regexp_$eq_eq_eq$3(string) {
       var self = this;
 
-      return self.$match($$($nesting, 'Opal')['$coerce_to?'](string, $$($nesting, 'String'), "to_str")) !== nil
-    }, $Regexp_$eq_eq_eq$7.$$arity = 1);
+      return self.$match($Opal['$coerce_to?'](string, $$$('String'), "to_str")) !== nil
+    }, 1);
     
-    Opal.def(self, '$=~', $Regexp_$eq_tilde$8 = function(string) {
+    $def(self, '$=~', function $Regexp_$eq_tilde$4(string) {
       var self = this, $ret_or_1 = nil;
       if ($gvars["~"] == null) $gvars["~"] = nil;
 
@@ -6772,10 +6709,9 @@ Opal.modules["corelib/regexp"] = function(Opal) {
       } else {
         return $ret_or_1
       }
-    }, $Regexp_$eq_tilde$8.$$arity = 1);
-    $alias(self, "eql?", "==");
+    }, 1);
     
-    Opal.def(self, '$inspect', $Regexp_inspect$9 = function $$inspect() {
+    $def(self, '$inspect', function $$inspect() {
       var self = this;
 
       
@@ -6811,40 +6747,39 @@ Opal.modules["corelib/regexp"] = function(Opal) {
         return value;
       }
     
-    }, $Regexp_inspect$9.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$match', $Regexp_match$10 = function $$match(string, pos) {
-      var $iter = $Regexp_match$10.$$p, block = $iter || nil, self = this;
+    $def(self, '$match', function $$match(string, pos) {
+      var block = $$match.$$p || nil, self = this;
       if ($gvars["~"] == null) $gvars["~"] = nil;
 
-      if ($iter) $Regexp_match$10.$$p = null;
-      
+      delete $$match.$$p;
       
-      if ($iter) $Regexp_match$10.$$p = null;;
+      ;
       ;
       
       if (self.uninitialized) {
-        self.$raise($$($nesting, 'TypeError'), "uninitialized Regexp")
+        $Kernel.$raise($$$('TypeError'), "uninitialized Regexp")
       }
 
       if (pos === undefined) {
         if (string === nil) return ($gvars["~"] = nil);
-        var m = self.exec($coerce_to(string, $$($nesting, 'String'), 'to_str'));
+        var m = self.exec($coerce_to(string, $$$('String'), 'to_str'));
         if (m) {
-          ($gvars["~"] = $$($nesting, 'MatchData').$new(self, m));
+          ($gvars["~"] = $$$('MatchData').$new(self, m));
           return block === nil ? $gvars["~"] : Opal.yield1(block, $gvars["~"]);
         } else {
           return ($gvars["~"] = nil);
         }
       }
 
-      pos = $coerce_to(pos, $$($nesting, 'Integer'), 'to_int');
+      pos = $coerce_to(pos, $$$('Integer'), 'to_int');
 
       if (string === nil) {
         return ($gvars["~"] = nil);
       }
 
-      string = $coerce_to(string, $$($nesting, 'String'), 'to_str');
+      string = $coerce_to(string, $$$('String'), 'to_str');
 
       if (pos < 0) {
         pos += string.length;
@@ -6862,35 +6797,35 @@ Opal.modules["corelib/regexp"] = function(Opal) {
           return ($gvars["~"] = nil);
         }
         if (md.index >= pos) {
-          ($gvars["~"] = $$($nesting, 'MatchData').$new(re, md));
+          ($gvars["~"] = $$$('MatchData').$new(re, md));
           return block === nil ? $gvars["~"] : Opal.yield1(block, $gvars["~"]);
         }
         re.lastIndex = md.index + 1;
       }
     ;
-    }, $Regexp_match$10.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$match?', $Regexp_match$ques$11 = function(string, pos) {
+    $def(self, '$match?', function $Regexp_match$ques$5(string, pos) {
       var self = this;
 
       
       ;
       
       if (self.uninitialized) {
-        self.$raise($$($nesting, 'TypeError'), "uninitialized Regexp")
+        $Kernel.$raise($$$('TypeError'), "uninitialized Regexp")
       }
 
       if (pos === undefined) {
-        return string === nil ? false : self.test($coerce_to(string, $$($nesting, 'String'), 'to_str'));
+        return string === nil ? false : self.test($coerce_to(string, $$$('String'), 'to_str'));
       }
 
-      pos = $coerce_to(pos, $$($nesting, 'Integer'), 'to_int');
+      pos = $coerce_to(pos, $$$('Integer'), 'to_int');
 
       if (string === nil) {
         return false;
       }
 
-      string = $coerce_to(string, $$($nesting, 'String'), 'to_str');
+      string = $coerce_to(string, $$$('String'), 'to_str');
 
       if (pos < 0) {
         pos += string.length;
@@ -6909,87 +6844,93 @@ Opal.modules["corelib/regexp"] = function(Opal) {
         return true;
       }
     ;
-    }, $Regexp_match$ques$11.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$names', $Regexp_names$12 = function $$names() {
+    $def(self, '$names', function $$names() {
       var self = this;
 
-      return $send(self.$source().$scan(/\(?<(\w+)>/), 'map', [], "first".$to_proc()).$uniq()
-    }, $Regexp_names$12.$$arity = 0);
+      return $send(self.$source().$scan(/\(?<(\w+)>/, $hash2(["no_matchdata"], {"no_matchdata": true})), 'map', [], "first".$to_proc()).$uniq()
+    }, 0);
     
-    Opal.def(self, '$named_captures', $Regexp_named_captures$13 = function $$named_captures() {
-      var $$14, self = this;
-
-      return $send($send($send(self.$source().$scan(/\(?<(\w+)>/), 'map', [], "first".$to_proc()).$each_with_index(), 'group_by', [], "first".$to_proc()), 'transform_values', [], ($$14 = function(i){var self = $$14.$$s == null ? this : $$14.$$s, $$15;
+    $def(self, '$named_captures', function $$named_captures() {
+      var self = this;
 
+      return $send($send($send(self.$source().$scan(/\(?<(\w+)>/, $hash2(["no_matchdata"], {"no_matchdata": true})), 'map', [], "first".$to_proc()).$each_with_index(), 'group_by', [], "first".$to_proc()), 'transform_values', [], function $$6(i){
         
         
-        if (i == null) {
-          i = nil;
-        };
-        return $send(i, 'map', [], ($$15 = function(j){var self = $$15.$$s == null ? this : $$15.$$s;
-
+        if (i == null) i = nil;;
+        return $send(i, 'map', [], function $$7(j){
           
           
-          if (j == null) {
-            j = nil;
-          };
-          return $rb_plus(j.$last(), 1);}, $$15.$$s = self, $$15.$$arity = 1, $$15));}, $$14.$$s = self, $$14.$$arity = 1, $$14))
-    }, $Regexp_named_captures$13.$$arity = 0);
+          if (j == null) j = nil;;
+          return $rb_plus(j.$last(), 1);}, 1);}, 1)
+    }, 0);
     
-    Opal.def(self, '$~', $Regexp_$$16 = function() {
+    $def(self, '$~', function $Regexp_$$8() {
       var self = this;
       if ($gvars._ == null) $gvars._ = nil;
 
       return self['$=~']($gvars._)
-    }, $Regexp_$$16.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$source', $Regexp_source$17 = function $$source() {
+    $def(self, '$source', function $$source() {
       var self = this;
 
       return self.source;
-    }, $Regexp_source$17.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$options', $Regexp_options$18 = function $$options() {
+    $def(self, '$options', function $$options() {
       var self = this;
 
       
       if (self.uninitialized) {
-        self.$raise($$($nesting, 'TypeError'), "uninitialized Regexp")
+        $Kernel.$raise($$$('TypeError'), "uninitialized Regexp")
       }
       var result = 0;
       // should be supported in IE6 according to https://msdn.microsoft.com/en-us/library/7f5z26w4(v=vs.94).aspx
       if (self.multiline) {
-        result |= $$($nesting, 'MULTILINE');
+        result |= $$('MULTILINE');
       }
       if (self.ignoreCase) {
-        result |= $$($nesting, 'IGNORECASE');
+        result |= $$('IGNORECASE');
       }
       return result;
     
-    }, $Regexp_options$18.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$casefold?', $Regexp_casefold$ques$19 = function() {
+    $def(self, '$casefold?', function $Regexp_casefold$ques$9() {
       var self = this;
 
       return self.ignoreCase;
-    }, $Regexp_casefold$ques$19.$$arity = 0);
+    }, 0);
+    $alias(self, "eql?", "==");
     return $alias(self, "to_s", "source");
-  })($nesting[0], RegExp, $nesting);
+  })('::', RegExp, $nesting);
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'MatchData');
 
-    var $nesting = [self].concat($parent_nesting), $MatchData_initialize$20, $MatchData_$$$21, $MatchData_offset$22, $MatchData_$eq_eq$23, $MatchData_begin$24, $MatchData_end$25, $MatchData_captures$26, $MatchData_named_captures$27, $MatchData_names$29, $MatchData_inspect$30, $MatchData_length$32, $MatchData_to_a$33, $MatchData_to_s$34, $MatchData_values_at$35;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-    self.$$prototype.matches = nil;
+    $proto.matches = nil;
     
     self.$attr_reader("post_match", "pre_match", "regexp", "string");
     
-    Opal.def(self, '$initialize', $MatchData_initialize$20 = function $$initialize(regexp, match_groups) {
-      var self = this;
+    $def(self, '$initialize', function $$initialize(regexp, match_groups, $kwargs) {
+      var no_matchdata, self = this;
 
       
-      $gvars["~"] = self;
+      
+      if ($kwargs == null) {
+        $kwargs = $hash2([], {});
+      } else if (!$kwargs.$$is_hash) {
+        throw Opal.ArgumentError.$new('expected kwargs');
+      };
+      
+      no_matchdata = $kwargs.$$smap["no_matchdata"];
+      if (no_matchdata == null) no_matchdata = false;
+      if (!$truthy(no_matchdata)) {
+        $gvars["~"] = self
+      };
       self.regexp = regexp;
       self.begin = match_groups.index;
       self.string = match_groups.input;
@@ -7008,119 +6949,120 @@ Opal.modules["corelib/regexp"] = function(Opal) {
         }
       }
     ;
-    }, $MatchData_initialize$20.$$arity = 2);
+    }, -3);
+    
+    $def(self, '$match', function $$match(idx) {
+      var self = this, match = nil;
+
+      if ($truthy((match = self['$[]'](idx)))) {
+        return match
+      } else if (($truthy(idx['$is_a?']($$('Integer'))) && ($truthy($rb_ge(idx, self.$length()))))) {
+        return $Kernel.$raise($$$('IndexError'), "index " + (idx) + " out of matches")
+      } else {
+        return nil
+      }
+    }, 1);
+    
+    $def(self, '$match_length', function $$match_length(idx) {
+      var $a, self = this;
+
+      return ($a = self.$match(idx), ($a === nil || $a == null) ? nil : $send($a, 'length', []))
+    }, 1);
     
-    Opal.def(self, '$[]', $MatchData_$$$21 = function($a) {
+    $def(self, '$[]', function $MatchData_$$$10($a) {
       var $post_args, args, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
       
       if (args[0].$$is_string) {
         if (self.$regexp().$names()['$include?'](args['$[]'](0))['$!']()) {
-          self.$raise($$($nesting, 'IndexError'), "" + "undefined group name reference: " + (args['$[]'](0)))
+          $Kernel.$raise($$$('IndexError'), "undefined group name reference: " + (args['$[]'](0)))
         }
         return self.$named_captures()['$[]'](args['$[]'](0))
       }
       else {
-        return $send(self.matches, '[]', Opal.to_a(args))
+        return $send(self.matches, '[]', $to_a(args))
       }
     ;
-    }, $MatchData_$$$21.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$offset', $MatchData_offset$22 = function $$offset(n) {
+    $def(self, '$offset', function $$offset(n) {
       var self = this;
 
       
       if (n !== 0) {
-        self.$raise($$($nesting, 'ArgumentError'), "MatchData#offset only supports 0th element")
+        $Kernel.$raise($$$('ArgumentError'), "MatchData#offset only supports 0th element")
       }
       return [self.begin, self.begin + self.matches[n].length];
     
-    }, $MatchData_offset$22.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$==', $MatchData_$eq_eq$23 = function(other) {
-      var self = this, $ret_or_2 = nil, $ret_or_3 = nil, $ret_or_4 = nil, $ret_or_5 = nil;
+    $def(self, '$==', function $MatchData_$eq_eq$11(other) {
+      var self = this, $ret_or_1 = nil, $ret_or_2 = nil, $ret_or_3 = nil, $ret_or_4 = nil;
 
       
-      if ($truthy($$($nesting, 'MatchData')['$==='](other))) {
-      } else {
+      if (!$eqeqeq($$$('MatchData'), other)) {
         return false
       };
-      if ($truthy(($ret_or_2 = (function() {if ($truthy(($ret_or_3 = (function() {if ($truthy(($ret_or_4 = (function() {if ($truthy(($ret_or_5 = self.string == other.string))) {
-        return self.regexp.toString() == other.regexp.toString();
-      } else {
-        return $ret_or_5
-      }; return nil; })()))) {
-        return self.pre_match == other.pre_match;
-      } else {
-        return $ret_or_4
-      }; return nil; })()))) {
-        return self.post_match == other.post_match;
-      } else {
-        return $ret_or_3
-      }; return nil; })()))) {
+      if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = ($truthy(($ret_or_3 = ($truthy(($ret_or_4 = self.string == other.string)) ? (self.regexp.toString() == other.regexp.toString()) : ($ret_or_4)))) ? (self.pre_match == other.pre_match) : ($ret_or_3)))) ? (self.post_match == other.post_match) : ($ret_or_2))))) {
         return self.begin == other.begin;
       } else {
-        return $ret_or_2
+        return $ret_or_1
       };
-    }, $MatchData_$eq_eq$23.$$arity = 1);
-    $alias(self, "eql?", "==");
+    }, 1);
     
-    Opal.def(self, '$begin', $MatchData_begin$24 = function $$begin(n) {
+    $def(self, '$begin', function $$begin(n) {
       var self = this;
 
       
       if (n !== 0) {
-        self.$raise($$($nesting, 'ArgumentError'), "MatchData#begin only supports 0th element")
+        $Kernel.$raise($$$('ArgumentError'), "MatchData#begin only supports 0th element")
       }
       return self.begin;
     
-    }, $MatchData_begin$24.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$end', $MatchData_end$25 = function $$end(n) {
+    $def(self, '$end', function $$end(n) {
       var self = this;
 
       
       if (n !== 0) {
-        self.$raise($$($nesting, 'ArgumentError'), "MatchData#end only supports 0th element")
+        $Kernel.$raise($$$('ArgumentError'), "MatchData#end only supports 0th element")
       }
       return self.begin + self.matches[n].length;
     
-    }, $MatchData_end$25.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$captures', $MatchData_captures$26 = function $$captures() {
+    $def(self, '$captures', function $$captures() {
       var self = this;
 
       return self.matches.slice(1)
-    }, $MatchData_captures$26.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$named_captures', $MatchData_named_captures$27 = function $$named_captures() {
-      var $$28, self = this, matches = nil;
+    $def(self, '$named_captures', function $$named_captures() {
+      var self = this, matches = nil;
 
       
       matches = self.$captures();
-      return $send(self.$regexp().$named_captures(), 'transform_values', [], ($$28 = function(i){var self = $$28.$$s == null ? this : $$28.$$s;
-
+      return $send(self.$regexp().$named_captures(), 'transform_values', [], function $$12(i){
         
         
-        if (i == null) {
-          i = nil;
-        };
-        return matches['$[]']($rb_minus(i.$last(), 1));}, $$28.$$s = self, $$28.$$arity = 1, $$28));
-    }, $MatchData_named_captures$27.$$arity = 0);
+        if (i == null) i = nil;;
+        return matches['$[]']($rb_minus(i.$last(), 1));}, 1);
+    }, 0);
     
-    Opal.def(self, '$names', $MatchData_names$29 = function $$names() {
+    $def(self, '$names', function $$names() {
       var self = this;
 
       return self.$regexp().$names()
-    }, $MatchData_names$29.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$inspect', $MatchData_inspect$30 = function $$inspect() {
-      var $$31, self = this;
+    $def(self, '$inspect', function $$inspect() {
+      var self = this;
 
       
       var str = "#<MatchData " + (self.matches[0]).$inspect();
@@ -7131,48 +7073,43 @@ Opal.modules["corelib/regexp"] = function(Opal) {
         }
       }
       else {
-        $send(self.$named_captures(), 'each', [], ($$31 = function(k, v){var self = $$31.$$s == null ? this : $$31.$$s;
-
+        $send(self.$named_captures(), 'each', [], function $$13(k, v){
         
         
-        if (k == null) {
-          k = nil;
-        };
+        if (k == null) k = nil;;
         
-        if (v == null) {
-          v = nil;
-        };
-        return                str += " " + k + ":" + v.$inspect();}, $$31.$$s = self, $$31.$$arity = 2, $$31))
+        if (v == null) v = nil;;
+        return                str += " " + k + ":" + v.$inspect();}, 2)
       }
 
       return str + ">";
     
-    }, $MatchData_inspect$30.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$length', $MatchData_length$32 = function $$length() {
+    $def(self, '$length', function $$length() {
       var self = this;
 
       return self.matches.length
-    }, $MatchData_length$32.$$arity = 0);
-    $alias(self, "size", "length");
+    }, 0);
     
-    Opal.def(self, '$to_a', $MatchData_to_a$33 = function $$to_a() {
+    $def(self, '$to_a', function $$to_a() {
       var self = this;
 
       return self.matches
-    }, $MatchData_to_a$33.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_s', $MatchData_to_s$34 = function $$to_s() {
+    $def(self, '$to_s', function $$to_s() {
       var self = this;
 
       return self.matches[0]
-    }, $MatchData_to_s$34.$$arity = 0);
-    return (Opal.def(self, '$values_at', $MatchData_values_at$35 = function $$values_at($a) {
+    }, 0);
+    
+    $def(self, '$values_at', function $$values_at($a) {
       var $post_args, args, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
       
@@ -7186,7 +7123,7 @@ Opal.modules["corelib/regexp"] = function(Opal) {
           Array.prototype.splice.apply(args, a);
         }
 
-        index = $$($nesting, 'Opal')['$coerce_to!'](args[i], $$($nesting, 'Integer'), "to_int");
+        index = $Opal['$coerce_to!'](args[i], $$$('Integer'), "to_int");
 
         if (index < 0) {
           index += self.matches.length;
@@ -7201,35 +7138,30 @@ Opal.modules["corelib/regexp"] = function(Opal) {
 
       return values;
     ;
-    }, $MatchData_values_at$35.$$arity = -1), nil) && 'values_at';
+    }, -1);
+    $alias(self, "eql?", "==");
+    return $alias(self, "size", "length");
   })($nesting[0], null, $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/string"] = function(Opal) {
-  function $rb_divide(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs / rhs : lhs['$/'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $coerce_to = Opal.coerce_to, $respond_to = Opal.respond_to, $klass = Opal.klass, $alias = Opal.alias, $send = Opal.send, $hash2 = Opal.hash2, $truthy = Opal.truthy, $gvars = Opal.gvars;
+Opal.modules["corelib/string"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $$$ = Opal.$$$, $coerce_to = Opal.coerce_to, $respond_to = Opal.respond_to, $global_multiline_regexp = Opal.global_multiline_regexp, $klass = Opal.klass, $def = Opal.def, $Opal = Opal.Opal, $defs = Opal.defs, $send = Opal.send, $to_a = Opal.to_a, $hash2 = Opal.hash2, $eqeqeq = Opal.eqeqeq, $Kernel = Opal.Kernel, $truthy = Opal.truthy, $gvars = Opal.gvars, $rb_divide = Opal.rb_divide, $rb_plus = Opal.rb_plus, $alias = Opal.alias, $const_set = Opal.const_set;
 
-  Opal.add_stubs(['$require', '$include', '$coerce_to?', '$initialize', '$===', '$format', '$raise', '$respond_to?', '$to_s', '$to_str', '$<=>', '$==', '$=~', '$new', '$force_encoding', '$casecmp', '$empty?', '$ljust', '$ceil', '$/', '$+', '$rjust', '$floor', '$coerce_to!', '$copy_singleton_methods', '$initialize_clone', '$initialize_dup', '$enum_for', '$chomp', '$[]', '$to_i', '$each_line', '$to_proc', '$to_a', '$class', '$match', '$match?', '$captures', '$proc', '$succ', '$escape', '$include?', '$upcase', '$unicode_normalize', '$pristine']);
+  Opal.add_stubs('require,include,coerce_to?,initialize,===,format,raise,respond_to?,to_s,to_str,<=>,==,=~,new,force_encoding,casecmp,empty?,ljust,ceil,/,+,rjust,floor,coerce_to!,copy_singleton_methods,initialize_clone,initialize_dup,enum_for,chomp,[],to_i,each_line,to_proc,to_a,class,match,match?,captures,proc,succ,escape,include?,upcase,unicode_normalize,pristine');
   
   self.$require("corelib/comparable");
   self.$require("corelib/regexp");
   (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'String');
 
-    var $nesting = [self].concat($parent_nesting), $String___id__$1, $String_try_convert$2, $String_new$3, $String_initialize$4, $String_$percent$5, $String_$$6, $String_$plus$7, $String_$lt_eq_gt$8, $String_$eq_eq$9, $String_$eq_tilde$10, $String_$$$11, $String_b$12, $String_capitalize$13, $String_casecmp$14, $String_casecmp$ques$15, $String_center$16, $String_chomp$17, $String_chop$18, $String_chr$19, $String_clone$20, $String_dup$21, $String_count$22, $String_delete$23, $String_delete_prefix$24, $String_delete_suffix$25, $String_downcase$26, $String_each_line$27, $String_empty$ques$28, $String_end_with$ques$29, $String_gsub$30, $String_hash$31, $String_hex$32, $String_include$ques$33, $String_index$34, $String_inspect$35, $String_intern$36, $String_lines$37, $String_ljust$38, $String_lstrip$39, $String_ascii_only$ques$40, $String_match$41, $String_match$ques$42, $String_next$43, $String_oct$44, $String_ord$45, $String_partition$46, $String_reverse$47, $String_rindex$48, $String_rjust$49, $String_rpartition$50, $String_rstrip$51, $String_scan$52, $String_split$53, $String_squeeze$54, $String_start_with$ques$55, $String_strip$56, $String_sub$57, $String_sum$58, $String_swapcase$59, $String_to_f$60, $String_to_i$61, $String_to_proc$62, $String_to_s$64, $String_tr$65, $String_tr_s$66, $String_upcase$67, $String_upto$68, $String_instance_variables$69, $String__load$70, $String_unicode_normalize$71, $String_unicode_normalized$ques$72, $String_unpack$73, $String_unpack1$74, $String_freeze$75, $String_$minus$$76, $String_frozen$ques$77;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
-    self.$include($$($nesting, 'Comparable'));
+    self.$include($$$('Comparable'));
     
-    Opal.defineProperty(self.$$prototype, '$$is_string', true);
+    Opal.prop(self.$$prototype, '$$is_string', true);
 
-    Opal.defineProperty(self.$$prototype, '$$cast', function(string) {
+    Opal.prop(self.$$prototype, '$$cast', function(string) {
       var klass = this.$$class;
       if (klass.$$constructor === String) {
         return string;
@@ -7239,44 +7171,42 @@ Opal.modules["corelib/string"] = function(Opal) {
     });
   ;
     
-    Opal.def(self, '$__id__', $String___id__$1 = function $$__id__() {
+    $def(self, '$__id__', function $$__id__() {
       var self = this;
 
       return self.toString();
-    }, $String___id__$1.$$arity = 0);
-    $alias(self, "object_id", "__id__");
-    Opal.defs(self, '$try_convert', $String_try_convert$2 = function $$try_convert(what) {
-      var self = this;
-
-      return $$($nesting, 'Opal')['$coerce_to?'](what, $$($nesting, 'String'), "to_str")
-    }, $String_try_convert$2.$$arity = 1);
-    Opal.defs(self, '$new', $String_new$3 = function($a) {
+    }, 0);
+    $defs(self, '$try_convert', function $$try_convert(what) {
+      
+      return $Opal['$coerce_to?'](what, $$$('String'), "to_str")
+    }, 1);
+    $defs(self, '$new', function $String_new$1($a) {
       var $post_args, args, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
       
       var str = args[0] || "";
       var opts = args[args.length-1];
-      str = $coerce_to(str, $$($nesting, 'String'), 'to_str');
+      str = $coerce_to(str, $$$('String'), 'to_str');
       if (opts && opts.$$is_hash) {
         if (opts.$$smap.encoding) str = str.$force_encoding(opts.$$smap.encoding);
       }
       str = new self.$$constructor(str);
-      if (!str.$initialize.$$pristine) $send((str), 'initialize', Opal.to_a(args));
+      if (!str.$initialize.$$pristine) $send((str), 'initialize', $to_a(args));
       return str;
     ;
-    }, $String_new$3.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$initialize', $String_initialize$4 = function $$initialize($a, $b) {
-      var $post_args, $kwargs, str, encoding, capacity, self = this;
+    $def(self, '$initialize', function $$initialize($a, $b) {
+      var $post_args, $kwargs, str, encoding, capacity;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       $kwargs = Opal.extract_kwargs($post_args);
       
@@ -7286,41 +7216,34 @@ Opal.modules["corelib/string"] = function(Opal) {
         throw Opal.ArgumentError.$new('expected kwargs');
       };
       
-      if ($post_args.length > 0) {
-        str = $post_args[0];
-        $post_args.splice(0, 1);
-      };
+      if ($post_args.length > 0) str = $post_args.shift();;
       
       encoding = $kwargs.$$smap["encoding"];
-      if (encoding == null) {
-        encoding = nil
-      };
+      if (encoding == null) encoding = nil;
       
       capacity = $kwargs.$$smap["capacity"];
-      if (capacity == null) {
-        capacity = nil
-      };
+      if (capacity == null) capacity = nil;
       return nil;
-    }, $String_initialize$4.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$%', $String_$percent$5 = function(data) {
+    $def(self, '$%', function $String_$percent$2(data) {
       var self = this;
 
-      if ($truthy($$($nesting, 'Array')['$==='](data))) {
-        return $send(self, 'format', [self].concat(Opal.to_a(data)))
+      if ($eqeqeq($$$('Array'), data)) {
+        return $send(self, 'format', [self].concat($to_a(data)))
       } else {
         return self.$format(self, data)
       }
-    }, $String_$percent$5.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$*', $String_$$6 = function(count) {
+    $def(self, '$*', function $String_$$3(count) {
       var self = this;
 
       
-      count = $coerce_to(count, $$($nesting, 'Integer'), 'to_int');
+      count = $coerce_to(count, $$$('Integer'), 'to_int');
 
       if (count < 0) {
-        self.$raise($$($nesting, 'ArgumentError'), "negative argument")
+        $Kernel.$raise($$$('ArgumentError'), "negative argument")
       }
 
       if (count === 0) {
@@ -7335,7 +7258,7 @@ Opal.modules["corelib/string"] = function(Opal) {
       // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/repeat
 
       if (string.length * count >= 1 << 28) {
-        self.$raise($$($nesting, 'RangeError'), "multiply count must not overflow maximum string size")
+        $Kernel.$raise($$$('RangeError'), "multiply count must not overflow maximum string size")
       }
 
       for (;;) {
@@ -7351,13 +7274,13 @@ Opal.modules["corelib/string"] = function(Opal) {
 
       return self.$$cast(result);
     
-    }, $String_$$6.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$+', $String_$plus$7 = function(other) {
+    $def(self, '$+', function $String_$plus$4(other) {
       var self = this;
 
       
-      other = $coerce_to(other, $$($nesting, 'String'), 'to_str');
+      other = $coerce_to(other, $$$('String'), 'to_str');
       
       if (other == "" && self.$$class === Opal.String) return self;
       if (self == "" && other.$$class === Opal.String) return other;
@@ -7366,9 +7289,9 @@ Opal.modules["corelib/string"] = function(Opal) {
       if (self.encoding.name === "UTF-8" || other.encoding.name === "UTF-8") return out;
       return Opal.enc(out, self.encoding);
     ;
-    }, $String_$plus$7.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$<=>', $String_$lt_eq_gt$8 = function(other) {
+    $def(self, '$<=>', function $String_$lt_eq_gt$5(other) {
       var self = this;
 
       if ($truthy(other['$respond_to?']("to_str"))) {
@@ -7387,9 +7310,9 @@ Opal.modules["corelib/string"] = function(Opal) {
         }
       
       }
-    }, $String_$lt_eq_gt$8.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$==', $String_$eq_eq$9 = function(other) {
+    $def(self, '$==', function $String_$eq_eq$6(other) {
       var self = this;
 
       
@@ -7401,34 +7324,33 @@ Opal.modules["corelib/string"] = function(Opal) {
       }
       return false;
     
-    }, $String_$eq_eq$9.$$arity = 1);
-    $alias(self, "eql?", "==");
-    $alias(self, "===", "==");
+    }, 1);
     
-    Opal.def(self, '$=~', $String_$eq_tilde$10 = function(other) {
+    $def(self, '$=~', function $String_$eq_tilde$7(other) {
       var self = this;
 
       
       if (other.$$is_string) {
-        self.$raise($$($nesting, 'TypeError'), "type mismatch: String given");
+        $Kernel.$raise($$$('TypeError'), "type mismatch: String given");
       }
 
       return other['$=~'](self);
     
-    }, $String_$eq_tilde$10.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$[]', $String_$$$11 = function(index, length) {
+    $def(self, '$[]', function $String_$$$8(index, length) {
       var self = this;
 
       
       ;
       
-      var size = self.length, exclude;
+      var size = self.length, exclude, range;
 
       if (index.$$is_range) {
         exclude = index.excl;
-        length  = $coerce_to(index.end, $$($nesting, 'Integer'), 'to_int');
-        index   = $coerce_to(index.begin, $$($nesting, 'Integer'), 'to_int');
+        range   = index;
+        length  = index.end === nil ? -1 : $coerce_to(index.end, $$$('Integer'), 'to_int');
+        index   = index.begin === nil ? 0 : $coerce_to(index.begin, $$$('Integer'), 'to_int');
 
         if (Math.abs(index) > size) {
           return nil;
@@ -7442,7 +7364,7 @@ Opal.modules["corelib/string"] = function(Opal) {
           length += size;
         }
 
-        if (!exclude) {
+        if (!exclude || range.end === nil) {
           length += 1;
         }
 
@@ -7458,7 +7380,7 @@ Opal.modules["corelib/string"] = function(Opal) {
 
       if (index.$$is_string) {
         if (length != null) {
-          self.$raise($$($nesting, 'TypeError'))
+          $Kernel.$raise($$$('TypeError'))
         }
         return self.indexOf(index) !== -1 ? self.$$cast(index) : nil;
       }
@@ -7472,13 +7394,13 @@ Opal.modules["corelib/string"] = function(Opal) {
           return nil;
         }
 
-        ($gvars["~"] = $$($nesting, 'MatchData').$new(index, match))
+        ($gvars["~"] = $$$('MatchData').$new(index, match))
 
         if (length == null) {
           return self.$$cast(match[0]);
         }
 
-        length = $coerce_to(length, $$($nesting, 'Integer'), 'to_int');
+        length = $coerce_to(length, $$$('Integer'), 'to_int');
 
         if (length < 0 && -length < match.length) {
           return self.$$cast(match[length += match.length]);
@@ -7492,7 +7414,7 @@ Opal.modules["corelib/string"] = function(Opal) {
       }
 
 
-      index = $coerce_to(index, $$($nesting, 'Integer'), 'to_int');
+      index = $coerce_to(index, $$$('Integer'), 'to_int');
 
       if (index < 0) {
         index += size;
@@ -7505,7 +7427,7 @@ Opal.modules["corelib/string"] = function(Opal) {
         return self.$$cast(self.substr(index, 1));
       }
 
-      length = $coerce_to(length, $$($nesting, 'Integer'), 'to_int');
+      length = $coerce_to(length, $$$('Integer'), 'to_int');
 
       if (length < 0) {
         return nil;
@@ -7517,30 +7439,28 @@ Opal.modules["corelib/string"] = function(Opal) {
 
       return self.$$cast(self.substr(index, length));
     ;
-    }, $String_$$$11.$$arity = -2);
-    $alias(self, "byteslice", "[]");
+    }, -2);
     
-    Opal.def(self, '$b', $String_b$12 = function $$b() {
+    $def(self, '$b', function $$b() {
       var self = this;
 
       return (new String(self)).$force_encoding("binary")
-    }, $String_b$12.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$capitalize', $String_capitalize$13 = function $$capitalize() {
+    $def(self, '$capitalize', function $$capitalize() {
       var self = this;
 
       return self.$$cast(self.charAt(0).toUpperCase() + self.substr(1).toLowerCase());
-    }, $String_capitalize$13.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$casecmp', $String_casecmp$14 = function $$casecmp(other) {
+    $def(self, '$casecmp', function $$casecmp(other) {
       var self = this;
 
       
-      if ($truthy(other['$respond_to?']("to_str"))) {
-      } else {
+      if (!$truthy(other['$respond_to?']("to_str"))) {
         return nil
       };
-      other = ($coerce_to(other, $$($nesting, 'String'), 'to_str')).$to_s();
+      other = ($coerce_to(other, $$$('String'), 'to_str')).$to_s();
       
       var ascii_only = /^[\x00-\x7F]*$/;
       if (ascii_only.test(self) && ascii_only.test(other)) {
@@ -7549,9 +7469,9 @@ Opal.modules["corelib/string"] = function(Opal) {
       }
     ;
       return self['$<=>'](other);
-    }, $String_casecmp$14.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$casecmp?', $String_casecmp$ques$15 = function(other) {
+    $def(self, '$casecmp?', function $String_casecmp$ques$9(other) {
       var self = this;
 
       
@@ -7562,42 +7482,41 @@ Opal.modules["corelib/string"] = function(Opal) {
         return cmp === 0;
       }
     
-    }, $String_casecmp$ques$15.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$center', $String_center$16 = function $$center(width, padstr) {
+    $def(self, '$center', function $$center(width, padstr) {
       var self = this;
 
       
       
-      if (padstr == null) {
-        padstr = " ";
-      };
-      width = $coerce_to(width, $$($nesting, 'Integer'), 'to_int');
-      padstr = ($coerce_to(padstr, $$($nesting, 'String'), 'to_str')).$to_s();
+      if (padstr == null) padstr = " ";;
+      width = $coerce_to(width, $$$('Integer'), 'to_int');
+      padstr = ($coerce_to(padstr, $$$('String'), 'to_str')).$to_s();
       if ($truthy(padstr['$empty?']())) {
-        self.$raise($$($nesting, 'ArgumentError'), "zero width padding")};
+        $Kernel.$raise($$$('ArgumentError'), "zero width padding")
+      };
       if ($truthy(width <= self.length)) {
-        return self};
+        return self
+      };
       
       var ljustified = self.$ljust($rb_divide($rb_plus(width, self.length), 2).$ceil(), padstr),
           rjustified = self.$rjust($rb_divide($rb_plus(width, self.length), 2).$floor(), padstr);
 
       return self.$$cast(rjustified + ljustified.slice(self.length));
     ;
-    }, $String_center$16.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$chomp', $String_chomp$17 = function $$chomp(separator) {
+    $def(self, '$chomp', function $$chomp(separator) {
       var self = this;
       if ($gvars["/"] == null) $gvars["/"] = nil;
 
       
       
-      if (separator == null) {
-        separator = $gvars["/"];
-      };
+      if (separator == null) separator = $gvars["/"];;
       if ($truthy(separator === nil || self.length === 0)) {
-        return self};
-      separator = $$($nesting, 'Opal')['$coerce_to!'](separator, $$($nesting, 'String'), "to_str").$to_s();
+        return self
+      };
+      separator = $Opal['$coerce_to!'](separator, $$$('String'), "to_str").$to_s();
       
       var result;
 
@@ -7620,9 +7539,9 @@ Opal.modules["corelib/string"] = function(Opal) {
       }
     ;
       return self;
-    }, $String_chomp$17.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$chop', $String_chop$18 = function $$chop() {
+    $def(self, '$chop', function $$chop() {
       var self = this;
 
       
@@ -7638,15 +7557,15 @@ Opal.modules["corelib/string"] = function(Opal) {
 
       return self.$$cast(result);
     
-    }, $String_chop$18.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$chr', $String_chr$19 = function $$chr() {
+    $def(self, '$chr', function $$chr() {
       var self = this;
 
       return self.charAt(0);
-    }, $String_chr$19.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$clone', $String_clone$20 = function $$clone() {
+    $def(self, '$clone', function $$clone() {
       var self = this, copy = nil;
 
       
@@ -7654,28 +7573,28 @@ Opal.modules["corelib/string"] = function(Opal) {
       copy.$copy_singleton_methods(self);
       copy.$initialize_clone(self);
       return copy;
-    }, $String_clone$20.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$dup', $String_dup$21 = function $$dup() {
+    $def(self, '$dup', function $$dup() {
       var self = this, copy = nil;
 
       
       copy = new String(self);
       copy.$initialize_dup(self);
       return copy;
-    }, $String_dup$21.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$count', $String_count$22 = function $$count($a) {
+    $def(self, '$count', function $$count($a) {
       var $post_args, sets, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       sets = $post_args;;
       
       if (sets.length === 0) {
-        self.$raise($$($nesting, 'ArgumentError'), "ArgumentError: wrong number of arguments (0 for 1+)")
+        $Kernel.$raise($$$('ArgumentError'), "ArgumentError: wrong number of arguments (0 for 1+)")
       }
       var char_class = char_class_from_char_sets(sets);
       if (char_class === null) {
@@ -7683,19 +7602,19 @@ Opal.modules["corelib/string"] = function(Opal) {
       }
       return self.length - self.replace(new RegExp(char_class, 'g'), '').length;
     ;
-    }, $String_count$22.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$delete', $String_delete$23 = function($a) {
+    $def(self, '$delete', function $String_delete$10($a) {
       var $post_args, sets, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       sets = $post_args;;
       
       if (sets.length === 0) {
-        self.$raise($$($nesting, 'ArgumentError'), "ArgumentError: wrong number of arguments (0 for 1+)")
+        $Kernel.$raise($$$('ArgumentError'), "ArgumentError: wrong number of arguments (0 for 1+)")
       }
       var char_class = char_class_from_char_sets(sets);
       if (char_class === null) {
@@ -7703,14 +7622,14 @@ Opal.modules["corelib/string"] = function(Opal) {
       }
       return self.$$cast(self.replace(new RegExp(char_class, 'g'), ''));
     ;
-    }, $String_delete$23.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$delete_prefix', $String_delete_prefix$24 = function $$delete_prefix(prefix) {
+    $def(self, '$delete_prefix', function $$delete_prefix(prefix) {
       var self = this;
 
       
       if (!prefix.$$is_string) {
-        prefix = $coerce_to(prefix, $$($nesting, 'String'), 'to_str');
+        prefix = $coerce_to(prefix, $$$('String'), 'to_str');
       }
 
       if (self.slice(0, prefix.length) === prefix) {
@@ -7719,14 +7638,14 @@ Opal.modules["corelib/string"] = function(Opal) {
         return self;
       }
     
-    }, $String_delete_prefix$24.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$delete_suffix', $String_delete_suffix$25 = function $$delete_suffix(suffix) {
+    $def(self, '$delete_suffix', function $$delete_suffix(suffix) {
       var self = this;
 
       
       if (!suffix.$$is_string) {
-        suffix = $coerce_to(suffix, $$($nesting, 'String'), 'to_str');
+        suffix = $coerce_to(suffix, $$$('String'), 'to_str');
       }
 
       if (self.slice(self.length - suffix.length) === suffix) {
@@ -7735,29 +7654,39 @@ Opal.modules["corelib/string"] = function(Opal) {
         return self;
       }
     
-    }, $String_delete_suffix$25.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$downcase', $String_downcase$26 = function $$downcase() {
+    $def(self, '$downcase', function $$downcase() {
       var self = this;
 
       return self.$$cast(self.toLowerCase());
-    }, $String_downcase$26.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$each_line', $String_each_line$27 = function $$each_line(separator) {
-      var $iter = $String_each_line$27.$$p, block = $iter || nil, self = this;
+    $def(self, '$each_line', function $$each_line($a, $b) {
+      var block = $$each_line.$$p || nil, $post_args, $kwargs, separator, chomp, self = this;
       if ($gvars["/"] == null) $gvars["/"] = nil;
 
-      if ($iter) $String_each_line$27.$$p = null;
+      delete $$each_line.$$p;
+      
+      ;
       
+      $post_args = Opal.slice.call(arguments);
       
-      if ($iter) $String_each_line$27.$$p = null;;
+      $kwargs = Opal.extract_kwargs($post_args);
       
-      if (separator == null) {
-        separator = $gvars["/"];
+      if ($kwargs == null) {
+        $kwargs = $hash2([], {});
+      } else if (!$kwargs.$$is_hash) {
+        throw Opal.ArgumentError.$new('expected kwargs');
       };
-      if ((block !== nil)) {
-      } else {
-        return self.$enum_for("each_line", separator)
+      
+      if ($post_args.length > 0) separator = $post_args.shift();
+      if (separator == null) separator = $gvars["/"];;
+      
+      chomp = $kwargs.$$smap["chomp"];
+      if (chomp == null) chomp = false;
+      if (!(block !== nil)) {
+        return self.$enum_for("each_line", separator, $hash2(["chomp"], {"chomp": chomp}))
       };
       
       if (separator === nil) {
@@ -7766,15 +7695,18 @@ Opal.modules["corelib/string"] = function(Opal) {
         return self;
       }
 
-      separator = $coerce_to(separator, $$($nesting, 'String'), 'to_str')
+      separator = $coerce_to(separator, $$$('String'), 'to_str');
 
-      var a, i, n, length, chomped, trailing, splitted;
+      var a, i, n, length, chomped, trailing, splitted, value;
 
       if (separator.length === 0) {
-        for (a = self.split(/(\n{2,})/), i = 0, n = a.length; i < n; i += 2) {
+        for (a = self.split(/((?:\r?\n){2})(?:(?:\r?\n)*)/), i = 0, n = a.length; i < n; i += 2) {
           if (a[i] || a[i + 1]) {
-            var value = (a[i] || "") + (a[i + 1] || "");
-            Opal.yield1(block, self.$$cast(value));
+            value = (a[i] || "") + (a[i + 1] || "");
+            if (chomp) {
+              value = (value).$chomp("\n");
+            }
+            Opal.yield1(block, value);
           }
         }
 
@@ -7786,34 +7718,36 @@ Opal.modules["corelib/string"] = function(Opal) {
       splitted = chomped.split(separator);
 
       for (i = 0, length = splitted.length; i < length; i++) {
+        value = splitted[i];
         if (i < length - 1 || trailing) {
-          Opal.yield1(block, self.$$cast(splitted[i] + separator));
+          value += separator;
         }
-        else {
-          Opal.yield1(block, self.$$cast(splitted[i]));
+        if (chomp) {
+          value = (value).$chomp(separator);
         }
+        Opal.yield1(block, value);
       }
     ;
       return self;
-    }, $String_each_line$27.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$empty?', $String_empty$ques$28 = function() {
+    $def(self, '$empty?', function $String_empty$ques$11() {
       var self = this;
 
       return self.length === 0;
-    }, $String_empty$ques$28.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$end_with?', $String_end_with$ques$29 = function($a) {
+    $def(self, '$end_with?', function $String_end_with$ques$12($a) {
       var $post_args, suffixes, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       suffixes = $post_args;;
       
       for (var i = 0, length = suffixes.length; i < length; i++) {
-        var suffix = $coerce_to(suffixes[i], $$($nesting, 'String'), 'to_str').$to_s();
+        var suffix = $coerce_to(suffixes[i], $$$('String'), 'to_str').$to_s();
 
         if (self.length >= suffix.length &&
             self.substr(self.length - suffix.length, suffix.length) == suffix) {
@@ -7822,16 +7756,14 @@ Opal.modules["corelib/string"] = function(Opal) {
       }
     ;
       return false;
-    }, $String_end_with$ques$29.$$arity = -1);
-    $alias(self, "equal?", "===");
+    }, -1);
     
-    Opal.def(self, '$gsub', $String_gsub$30 = function $$gsub(pattern, replacement) {
-      var $iter = $String_gsub$30.$$p, block = $iter || nil, self = this;
+    $def(self, '$gsub', function $$gsub(pattern, replacement) {
+      var block = $$gsub.$$p || nil, self = this;
 
-      if ($iter) $String_gsub$30.$$p = null;
-      
+      delete $$gsub.$$p;
       
-      if ($iter) $String_gsub$30.$$p = null;;
+      ;
       ;
       
       if (replacement === undefined && block === nil) {
@@ -7841,9 +7773,9 @@ Opal.modules["corelib/string"] = function(Opal) {
       var result = '', match_data = nil, index = 0, match, _replacement;
 
       if (pattern.$$is_regexp) {
-        pattern = Opal.global_multiline_regexp(pattern);
+        pattern = $global_multiline_regexp(pattern);
       } else {
-        pattern = $coerce_to(pattern, $$($nesting, 'String'), 'to_str');
+        pattern = $coerce_to(pattern, $$$('String'), 'to_str');
         pattern = new RegExp(pattern.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'), 'gm');
       }
 
@@ -7857,7 +7789,7 @@ Opal.modules["corelib/string"] = function(Opal) {
           break;
         }
 
-        match_data = $$($nesting, 'MatchData').$new(pattern, match);
+        match_data = $$$('MatchData').$new(pattern, match);
 
         if (replacement === undefined) {
           lastIndex = pattern.lastIndex;
@@ -7869,7 +7801,7 @@ Opal.modules["corelib/string"] = function(Opal) {
         }
         else {
           if (!replacement.$$is_string) {
-            replacement = $coerce_to(replacement, $$($nesting, 'String'), 'to_str');
+            replacement = $coerce_to(replacement, $$$('String'), 'to_str');
           }
           _replacement = replacement.replace(/([\\]+)([0-9+&`'])/g, function (original, slashes, command) {
             if (slashes.length % 2 === 0) {
@@ -7904,32 +7836,32 @@ Opal.modules["corelib/string"] = function(Opal) {
       ($gvars["~"] = match_data)
       return self.$$cast(result);
     ;
-    }, $String_gsub$30.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$hash', $String_hash$31 = function $$hash() {
+    $def(self, '$hash', function $$hash() {
       var self = this;
 
       return self.toString();
-    }, $String_hash$31.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$hex', $String_hex$32 = function $$hex() {
+    $def(self, '$hex', function $$hex() {
       var self = this;
 
       return self.$to_i(16)
-    }, $String_hex$32.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$include?', $String_include$ques$33 = function(other) {
+    $def(self, '$include?', function $String_include$ques$13(other) {
       var self = this;
 
       
       if (!other.$$is_string) {
-        other = $coerce_to(other, $$($nesting, 'String'), 'to_str');
+        other = $coerce_to(other, $$$('String'), 'to_str');
       }
       return self.indexOf(other) !== -1;
     
-    }, $String_include$ques$33.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$index', $String_index$34 = function $$index(search, offset) {
+    $def(self, '$index', function $$index(search, offset) {
       var self = this;
 
       
@@ -7942,7 +7874,7 @@ Opal.modules["corelib/string"] = function(Opal) {
       if (offset === undefined) {
         offset = 0;
       } else {
-        offset = $coerce_to(offset, $$($nesting, 'Integer'), 'to_int');
+        offset = $coerce_to(offset, $$$('Integer'), 'to_int');
         if (offset < 0) {
           offset += self.length;
           if (offset < 0) {
@@ -7952,7 +7884,7 @@ Opal.modules["corelib/string"] = function(Opal) {
       }
 
       if (search.$$is_regexp) {
-        regex = Opal.global_multiline_regexp(search);
+        regex = $global_multiline_regexp(search);
         while (true) {
           match = regex.exec(self);
           if (match === null) {
@@ -7961,14 +7893,14 @@ Opal.modules["corelib/string"] = function(Opal) {
             break;
           }
           if (match.index >= offset) {
-            ($gvars["~"] = $$($nesting, 'MatchData').$new(regex, match))
+            ($gvars["~"] = $$$('MatchData').$new(regex, match))
             index = match.index;
             break;
           }
           regex.lastIndex = match.index + 1;
         }
       } else {
-        search = $coerce_to(search, $$($nesting, 'String'), 'to_str');
+        search = $coerce_to(search, $$$('String'), 'to_str');
         if (search.length === 0 && offset > self.length) {
           index = -1;
         } else {
@@ -7978,9 +7910,9 @@ Opal.modules["corelib/string"] = function(Opal) {
 
       return index === -1 ? nil : index;
     ;
-    }, $String_index$34.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$inspect', $String_inspect$35 = function $$inspect() {
+    $def(self, '$inspect', function $$inspect() {
       var self = this;
 
       
@@ -8010,48 +7942,59 @@ Opal.modules["corelib/string"] = function(Opal) {
       return '"' + escaped.replace(/\#[\$\@\{]/g, '\\$&') + '"';
       /* eslint-enable no-misleading-character-class */
     
-    }, $String_inspect$35.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$intern', $String_intern$36 = function $$intern() {
+    $def(self, '$intern', function $$intern() {
       var self = this;
 
       return self.toString();
-    }, $String_intern$36.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$lines', $String_lines$37 = function $$lines(separator) {
-      var $iter = $String_lines$37.$$p, block = $iter || nil, self = this, e = nil;
+    $def(self, '$lines', function $$lines($a, $b) {
+      var block = $$lines.$$p || nil, $post_args, $kwargs, separator, chomp, self = this, e = nil;
       if ($gvars["/"] == null) $gvars["/"] = nil;
 
-      if ($iter) $String_lines$37.$$p = null;
+      delete $$lines.$$p;
+      
+      ;
       
+      $post_args = Opal.slice.call(arguments);
       
-      if ($iter) $String_lines$37.$$p = null;;
+      $kwargs = Opal.extract_kwargs($post_args);
       
-      if (separator == null) {
-        separator = $gvars["/"];
+      if ($kwargs == null) {
+        $kwargs = $hash2([], {});
+      } else if (!$kwargs.$$is_hash) {
+        throw Opal.ArgumentError.$new('expected kwargs');
       };
-      e = $send(self, 'each_line', [separator], block.$to_proc());
+      
+      if ($post_args.length > 0) separator = $post_args.shift();
+      if (separator == null) separator = $gvars["/"];;
+      
+      chomp = $kwargs.$$smap["chomp"];
+      if (chomp == null) chomp = false;
+      e = $send(self, 'each_line', [separator, $hash2(["chomp"], {"chomp": chomp})], block.$to_proc());
       if ($truthy(block)) {
         return self
       } else {
         return e.$to_a()
       };
-    }, $String_lines$37.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$ljust', $String_ljust$38 = function $$ljust(width, padstr) {
+    $def(self, '$ljust', function $$ljust(width, padstr) {
       var self = this;
 
       
       
-      if (padstr == null) {
-        padstr = " ";
-      };
-      width = $coerce_to(width, $$($nesting, 'Integer'), 'to_int');
-      padstr = ($coerce_to(padstr, $$($nesting, 'String'), 'to_str')).$to_s();
+      if (padstr == null) padstr = " ";;
+      width = $coerce_to(width, $$$('Integer'), 'to_int');
+      padstr = ($coerce_to(padstr, $$$('String'), 'to_str')).$to_s();
       if ($truthy(padstr['$empty?']())) {
-        self.$raise($$($nesting, 'ArgumentError'), "zero width padding")};
+        $Kernel.$raise($$$('ArgumentError'), "zero width padding")
+      };
       if ($truthy(width <= self.length)) {
-        return self};
+        return self
+      };
       
       var index  = -1,
           result = "";
@@ -8064,63 +8007,54 @@ Opal.modules["corelib/string"] = function(Opal) {
 
       return self.$$cast(self + result.slice(0, width));
     ;
-    }, $String_ljust$38.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$lstrip', $String_lstrip$39 = function $$lstrip() {
+    $def(self, '$lstrip', function $$lstrip() {
       var self = this;
 
-      return self.replace(/^\s*/, '');
-    }, $String_lstrip$39.$$arity = 0);
+      return self.replace(/^[\u0000\s]*/, '');
+    }, 0);
     
-    Opal.def(self, '$ascii_only?', $String_ascii_only$ques$40 = function() {
+    $def(self, '$ascii_only?', function $String_ascii_only$ques$14() {
       var self = this;
 
       
       if (!self.encoding.ascii) return false;
       return /^[\x00-\x7F]*$/.test(self);
     
-    }, $String_ascii_only$ques$40.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$match', $String_match$41 = function $$match(pattern, pos) {
-      var $iter = $String_match$41.$$p, block = $iter || nil, self = this, $ret_or_1 = nil;
+    $def(self, '$match', function $$match(pattern, pos) {
+      var block = $$match.$$p || nil, self = this;
 
-      if ($iter) $String_match$41.$$p = null;
+      delete $$match.$$p;
       
-      
-      if ($iter) $String_match$41.$$p = null;;
       ;
-      if ($truthy((function() {if ($truthy(($ret_or_1 = $$($nesting, 'String')['$==='](pattern)))) {
-        return $ret_or_1
-      } else {
-        return pattern['$respond_to?']("to_str")
-      }; return nil; })())) {
-        pattern = $$($nesting, 'Regexp').$new(pattern.$to_str())};
-      if ($truthy($$($nesting, 'Regexp')['$==='](pattern))) {
-      } else {
-        self.$raise($$($nesting, 'TypeError'), "" + "wrong argument type " + (pattern.$class()) + " (expected Regexp)")
+      ;
+      if (($eqeqeq($$('String'), pattern) || ($truthy(pattern['$respond_to?']("to_str"))))) {
+        pattern = $$$('Regexp').$new(pattern.$to_str())
+      };
+      if (!$eqeqeq($$$('Regexp'), pattern)) {
+        $Kernel.$raise($$$('TypeError'), "wrong argument type " + (pattern.$class()) + " (expected Regexp)")
       };
       return $send(pattern, 'match', [self, pos], block.$to_proc());
-    }, $String_match$41.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$match?', $String_match$ques$42 = function(pattern, pos) {
-      var self = this, $ret_or_2 = nil;
+    $def(self, '$match?', function $String_match$ques$15(pattern, pos) {
+      var self = this;
 
       
       ;
-      if ($truthy((function() {if ($truthy(($ret_or_2 = $$($nesting, 'String')['$==='](pattern)))) {
-        return $ret_or_2
-      } else {
-        return pattern['$respond_to?']("to_str")
-      }; return nil; })())) {
-        pattern = $$($nesting, 'Regexp').$new(pattern.$to_str())};
-      if ($truthy($$($nesting, 'Regexp')['$==='](pattern))) {
-      } else {
-        self.$raise($$($nesting, 'TypeError'), "" + "wrong argument type " + (pattern.$class()) + " (expected Regexp)")
+      if (($eqeqeq($$('String'), pattern) || ($truthy(pattern['$respond_to?']("to_str"))))) {
+        pattern = $$$('Regexp').$new(pattern.$to_str())
+      };
+      if (!$eqeqeq($$$('Regexp'), pattern)) {
+        $Kernel.$raise($$$('TypeError'), "wrong argument type " + (pattern.$class()) + " (expected Regexp)")
       };
       return pattern['$match?'](self, pos);
-    }, $String_match$ques$42.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$next', $String_next$43 = function $$next() {
+    $def(self, '$next', function $$next() {
       var self = this;
 
       
@@ -8190,9 +8124,9 @@ Opal.modules["corelib/string"] = function(Opal) {
       }
       return self.$$cast(result);
     
-    }, $String_next$43.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$oct', $String_oct$44 = function $$oct() {
+    $def(self, '$oct', function $$oct() {
       var self = this;
 
       
@@ -8235,9 +8169,9 @@ Opal.modules["corelib/string"] = function(Opal) {
       result = parseInt(string.replace(/_(?!_)/g, ''), radix);
       return isNaN(result) ? 0 : result;
     
-    }, $String_oct$44.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$ord', $String_ord$45 = function $$ord() {
+    $def(self, '$ord', function $$ord() {
       var self = this;
 
       
@@ -8248,9 +8182,9 @@ Opal.modules["corelib/string"] = function(Opal) {
         return self.charCodeAt(0);
       }
     
-    }, $String_ord$45.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$partition', $String_partition$46 = function $$partition(sep) {
+    $def(self, '$partition', function $$partition(sep) {
       var self = this;
 
       
@@ -8261,12 +8195,12 @@ Opal.modules["corelib/string"] = function(Opal) {
         if (m === null) {
           i = -1;
         } else {
-          $$($nesting, 'MatchData').$new(sep, m);
+          $$$('MatchData').$new(sep, m);
           sep = m[0];
           i = m.index;
         }
       } else {
-        sep = $coerce_to(sep, $$($nesting, 'String'), 'to_str');
+        sep = $coerce_to(sep, $$$('String'), 'to_str');
         i = self.indexOf(sep);
       }
 
@@ -8280,15 +8214,15 @@ Opal.modules["corelib/string"] = function(Opal) {
         self.slice(i + sep.length)
       ];
     
-    }, $String_partition$46.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$reverse', $String_reverse$47 = function $$reverse() {
+    $def(self, '$reverse', function $$reverse() {
       var self = this;
 
       return self.split('').reverse().join('');
-    }, $String_reverse$47.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$rindex', $String_rindex$48 = function $$rindex(search, offset) {
+    $def(self, '$rindex', function $$rindex(search, offset) {
       var self = this;
 
       
@@ -8299,7 +8233,7 @@ Opal.modules["corelib/string"] = function(Opal) {
       if (offset === undefined) {
         offset = self.length;
       } else {
-        offset = $coerce_to(offset, $$($nesting, 'Integer'), 'to_int');
+        offset = $coerce_to(offset, $$$('Integer'), 'to_int');
         if (offset < 0) {
           offset += self.length;
           if (offset < 0) {
@@ -8310,7 +8244,7 @@ Opal.modules["corelib/string"] = function(Opal) {
 
       if (search.$$is_regexp) {
         m = null;
-        r = Opal.global_multiline_regexp(search);
+        r = $global_multiline_regexp(search);
         while (true) {
           _m = r.exec(self);
           if (_m === null || _m.index > offset) {
@@ -8323,32 +8257,32 @@ Opal.modules["corelib/string"] = function(Opal) {
           ($gvars["~"] = nil)
           i = -1;
         } else {
-          $$($nesting, 'MatchData').$new(r, m);
+          $$$('MatchData').$new(r, m);
           i = m.index;
         }
       } else {
-        search = $coerce_to(search, $$($nesting, 'String'), 'to_str');
+        search = $coerce_to(search, $$$('String'), 'to_str');
         i = self.lastIndexOf(search, offset);
       }
 
       return i === -1 ? nil : i;
     ;
-    }, $String_rindex$48.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$rjust', $String_rjust$49 = function $$rjust(width, padstr) {
+    $def(self, '$rjust', function $$rjust(width, padstr) {
       var self = this;
 
       
       
-      if (padstr == null) {
-        padstr = " ";
-      };
-      width = $coerce_to(width, $$($nesting, 'Integer'), 'to_int');
-      padstr = ($coerce_to(padstr, $$($nesting, 'String'), 'to_str')).$to_s();
+      if (padstr == null) padstr = " ";;
+      width = $coerce_to(width, $$$('Integer'), 'to_int');
+      padstr = ($coerce_to(padstr, $$$('String'), 'to_str')).$to_s();
       if ($truthy(padstr['$empty?']())) {
-        self.$raise($$($nesting, 'ArgumentError'), "zero width padding")};
+        $Kernel.$raise($$$('ArgumentError'), "zero width padding")
+      };
       if ($truthy(width <= self.length)) {
-        return self};
+        return self
+      };
       
       var chars     = Math.floor(width - self.length),
           patterns  = Math.floor(chars / padstr.length),
@@ -8357,9 +8291,9 @@ Opal.modules["corelib/string"] = function(Opal) {
 
       return self.$$cast(result + padstr.slice(0, remaining) + self);
     ;
-    }, $String_rjust$49.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$rpartition', $String_rpartition$50 = function $$rpartition(sep) {
+    $def(self, '$rpartition', function $$rpartition(sep) {
       var self = this;
 
       
@@ -8367,7 +8301,7 @@ Opal.modules["corelib/string"] = function(Opal) {
 
       if (sep.$$is_regexp) {
         m = null;
-        r = Opal.global_multiline_regexp(sep);
+        r = $global_multiline_regexp(sep);
 
         while (true) {
           _m = r.exec(self);
@@ -8381,13 +8315,13 @@ Opal.modules["corelib/string"] = function(Opal) {
         if (m === null) {
           i = -1;
         } else {
-          $$($nesting, 'MatchData').$new(r, m);
+          $$$('MatchData').$new(r, m);
           sep = m[0];
           i = m.index;
         }
 
       } else {
-        sep = $coerce_to(sep, $$($nesting, 'String'), 'to_str');
+        sep = $coerce_to(sep, $$$('String'), 'to_str');
         i = self.lastIndexOf(sep);
       }
 
@@ -8401,54 +8335,67 @@ Opal.modules["corelib/string"] = function(Opal) {
         self.slice(i + sep.length)
       ];
     
-    }, $String_rpartition$50.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$rstrip', $String_rstrip$51 = function $$rstrip() {
+    $def(self, '$rstrip', function $$rstrip() {
       var self = this;
 
       return self.replace(/[\s\u0000]*$/, '');
-    }, $String_rstrip$51.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$scan', $String_scan$52 = function $$scan(pattern) {
-      var $iter = $String_scan$52.$$p, block = $iter || nil, self = this;
+    $def(self, '$scan', function $$scan(pattern, $kwargs) {
+      var block = $$scan.$$p || nil, no_matchdata, self = this;
 
-      if ($iter) $String_scan$52.$$p = null;
+      delete $$scan.$$p;
       
+      ;
+      
+      if ($kwargs == null) {
+        $kwargs = $hash2([], {});
+      } else if (!$kwargs.$$is_hash) {
+        throw Opal.ArgumentError.$new('expected kwargs');
+      };
       
-      if ($iter) $String_scan$52.$$p = null;;
+      no_matchdata = $kwargs.$$smap["no_matchdata"];
+      if (no_matchdata == null) no_matchdata = false;
       
       var result = [],
           match_data = nil,
           match;
 
       if (pattern.$$is_regexp) {
-        pattern = Opal.global_multiline_regexp(pattern);
+        pattern = $global_multiline_regexp(pattern);
       } else {
-        pattern = $coerce_to(pattern, $$($nesting, 'String'), 'to_str');
+        pattern = $coerce_to(pattern, $$$('String'), 'to_str');
         pattern = new RegExp(pattern.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'), 'gm');
       }
 
       while ((match = pattern.exec(self)) != null) {
-        match_data = $$($nesting, 'MatchData').$new(pattern, match);
+        match_data = $$$('MatchData').$new(pattern, match, $hash2(["no_matchdata"], {"no_matchdata": no_matchdata}));
         if (block === nil) {
           match.length == 1 ? result.push(match[0]) : result.push((match_data).$captures());
         } else {
-          match.length == 1 ? block(match[0]) : block.call(self, (match_data).$captures());
+          match.length == 1 ? Opal.yield1(block, match[0]) : Opal.yield1(block, (match_data).$captures());
         }
         if (pattern.lastIndex === match.index) {
           pattern.lastIndex += 1;
         }
       }
 
-      ($gvars["~"] = match_data)
+      if (!no_matchdata) ($gvars["~"] = match_data);
 
       return (block !== nil ? self : result);
     ;
-    }, $String_scan$52.$$arity = 1);
-    $alias(self, "slice", "[]");
+    }, -2);
+    
+    $def(self, '$singleton_class', function $$singleton_class() {
+      var self = this;
+
+      return Opal.get_singleton_class(self);
+    }, 0);
     
-    Opal.def(self, '$split', $String_split$53 = function $$split(pattern, limit) {
-      var self = this, $ret_or_3 = nil;
+    $def(self, '$split', function $$split(pattern, limit) {
+      var self = this, $ret_or_1 = nil;
       if ($gvars[";"] == null) $gvars[";"] = nil;
 
       
@@ -8462,18 +8409,14 @@ Opal.modules["corelib/string"] = function(Opal) {
       if (limit === undefined) {
         limit = 0;
       } else {
-        limit = $$($nesting, 'Opal')['$coerce_to!'](limit, $$($nesting, 'Integer'), "to_int");
+        limit = $Opal['$coerce_to!'](limit, $$$('Integer'), "to_int");
         if (limit === 1) {
           return [self];
         }
       }
 
       if (pattern === undefined || pattern === nil) {
-        pattern = (function() {if ($truthy(($ret_or_3 = $gvars[";"]))) {
-        return $ret_or_3
-      } else {
-        return " "
-      }; return nil; })();
+        pattern = ($truthy(($ret_or_1 = $gvars[";"])) ? ($ret_or_1) : (" "));
       }
 
       var result = [],
@@ -8483,9 +8426,9 @@ Opal.modules["corelib/string"] = function(Opal) {
           i, ii;
 
       if (pattern.$$is_regexp) {
-        pattern = Opal.global_multiline_regexp(pattern);
+        pattern = $global_multiline_regexp(pattern);
       } else {
-        pattern = $coerce_to(pattern, $$($nesting, 'String'), 'to_str').$to_s();
+        pattern = $coerce_to(pattern, $$$('String'), 'to_str').$to_s();
         if (pattern === ' ') {
           pattern = /\s+/gm;
           string = string.replace(/^\s+/, '');
@@ -8554,14 +8497,14 @@ Opal.modules["corelib/string"] = function(Opal) {
       castResult();
       return result;
     ;
-    }, $String_split$53.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$squeeze', $String_squeeze$54 = function $$squeeze($a) {
+    $def(self, '$squeeze', function $$squeeze($a) {
       var $post_args, sets, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       sets = $post_args;;
       
@@ -8574,14 +8517,14 @@ Opal.modules["corelib/string"] = function(Opal) {
       }
       return self.$$cast(self.replace(new RegExp('(' + char_class + ')\\1+', 'g'), '$1'));
     ;
-    }, $String_squeeze$54.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$start_with?', $String_start_with$ques$55 = function($a) {
+    $def(self, '$start_with?', function $String_start_with$ques$16($a) {
       var $post_args, prefixes, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       prefixes = $post_args;;
       
@@ -8591,13 +8534,13 @@ Opal.modules["corelib/string"] = function(Opal) {
           var match = regexp.exec(self);
 
           if (match != null && match.index === 0) {
-            ($gvars["~"] = $$($nesting, 'MatchData').$new(regexp, match));
+            ($gvars["~"] = $$$('MatchData').$new(regexp, match));
             return true;
           } else {
             ($gvars["~"] = nil)
           }
         } else {
-          var prefix = $coerce_to(prefixes[i], $$($nesting, 'String'), 'to_str').$to_s();
+          var prefix = $coerce_to(prefixes[i], $$$('String'), 'to_str').$to_s();
 
           if (self.indexOf(prefix) === 0) {
             return true;
@@ -8607,25 +8550,24 @@ Opal.modules["corelib/string"] = function(Opal) {
 
       return false;
     ;
-    }, $String_start_with$ques$55.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$strip', $String_strip$56 = function $$strip() {
+    $def(self, '$strip', function $$strip() {
       var self = this;
 
-      return self.replace(/^\s*/, '').replace(/[\s\u0000]*$/, '');
-    }, $String_strip$56.$$arity = 0);
+      return self.replace(/^[\s\u0000]*|[\s\u0000]*$/g, '');
+    }, 0);
     
-    Opal.def(self, '$sub', $String_sub$57 = function $$sub(pattern, replacement) {
-      var $iter = $String_sub$57.$$p, block = $iter || nil, self = this;
+    $def(self, '$sub', function $$sub(pattern, replacement) {
+      var block = $$sub.$$p || nil, self = this;
 
-      if ($iter) $String_sub$57.$$p = null;
-      
+      delete $$sub.$$p;
       
-      if ($iter) $String_sub$57.$$p = null;;
+      ;
       ;
       
       if (!pattern.$$is_regexp) {
-        pattern = $coerce_to(pattern, $$($nesting, 'String'), 'to_str');
+        pattern = $coerce_to(pattern, $$$('String'), 'to_str');
         pattern = new RegExp(pattern.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'));
       }
 
@@ -8635,12 +8577,12 @@ Opal.modules["corelib/string"] = function(Opal) {
         ($gvars["~"] = nil)
         result = self.toString();
       } else {
-        $$($nesting, 'MatchData').$new(pattern, match)
+        $$$('MatchData').$new(pattern, match)
 
         if (replacement === undefined) {
 
           if (block === nil) {
-            self.$raise($$($nesting, 'ArgumentError'), "wrong number of arguments (1 for 2)")
+            $Kernel.$raise($$$('ArgumentError'), "wrong number of arguments (1 for 2)")
           }
           result = self.slice(0, match.index) + block(match[0]) + self.slice(match.index + match[0].length);
 
@@ -8650,7 +8592,7 @@ Opal.modules["corelib/string"] = function(Opal) {
 
         } else {
 
-          replacement = $coerce_to(replacement, $$($nesting, 'String'), 'to_str');
+          replacement = $coerce_to(replacement, $$$('String'), 'to_str');
 
           replacement = replacement.replace(/([\\]+)([0-9+&`'])/g, function (original, slashes, command) {
             if (slashes.length % 2 === 0) {
@@ -8677,19 +8619,16 @@ Opal.modules["corelib/string"] = function(Opal) {
 
       return self.$$cast(result);
     ;
-    }, $String_sub$57.$$arity = -2);
-    $alias(self, "succ", "next");
+    }, -2);
     
-    Opal.def(self, '$sum', $String_sum$58 = function $$sum(n) {
+    $def(self, '$sum', function $$sum(n) {
       var self = this;
 
       
       
-      if (n == null) {
-        n = 16;
-      };
+      if (n == null) n = 16;;
       
-      n = $coerce_to(n, $$($nesting, 'Integer'), 'to_int');
+      n = $coerce_to(n, $$$('Integer'), 'to_int');
 
       var result = 0,
           length = self.length,
@@ -8705,9 +8644,9 @@ Opal.modules["corelib/string"] = function(Opal) {
 
       return result & (Math.pow(2, n) - 1);
     ;
-    }, $String_sum$58.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$swapcase', $String_swapcase$59 = function $$swapcase() {
+    $def(self, '$swapcase', function $$swapcase() {
       var self = this;
 
       
@@ -8721,9 +8660,9 @@ Opal.modules["corelib/string"] = function(Opal) {
 
       return self.$class().$new(str);
     
-    }, $String_swapcase$59.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_f', $String_to_f$60 = function $$to_f() {
+    $def(self, '$to_f', function $$to_f() {
       var self = this;
 
       
@@ -8740,23 +8679,21 @@ Opal.modules["corelib/string"] = function(Opal) {
         return result;
       }
     
-    }, $String_to_f$60.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_i', $String_to_i$61 = function $$to_i(base) {
+    $def(self, '$to_i', function $$to_i(base) {
       var self = this;
 
       
       
-      if (base == null) {
-        base = 10;
-      };
+      if (base == null) base = 10;;
       
       var result,
           string = self.toLowerCase(),
-          radix = $coerce_to(base, $$($nesting, 'Integer'), 'to_int');
+          radix = $coerce_to(base, $$$('Integer'), 'to_int');
 
       if (radix === 1 || radix < 0 || radix > 36) {
-        self.$raise($$($nesting, 'ArgumentError'), "" + "invalid radix " + (radix))
+        $Kernel.$raise($$$('ArgumentError'), "invalid radix " + (radix))
       }
 
       if (/^\s*_/.test(string)) {
@@ -8806,26 +8743,26 @@ Opal.modules["corelib/string"] = function(Opal) {
       result = parseInt(string.replace(/_(?!_)/g, ''), radix);
       return isNaN(result) ? 0 : result;
     ;
-    }, $String_to_i$61.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$to_proc', $String_to_proc$62 = function $$to_proc() {
-      var $$63, $iter = $String_to_proc$62.$$p, $yield = $iter || nil, self = this, method_name = nil;
+    $def(self, '$to_proc', function $$to_proc() {
+      var $yield = $$to_proc.$$p || nil, self = this, method_name = nil;
 
-      if ($iter) $String_to_proc$62.$$p = null;
+      delete $$to_proc.$$p;
       
       method_name = $rb_plus("$", self.valueOf());
-      return $send(self, 'proc', [], ($$63 = function($a){var self = $$63.$$s == null ? this : $$63.$$s, $iter = $$63.$$p, block = $iter || nil, $post_args, args;
+      return $send($Kernel, 'proc', [], function $$17($a){var block = $$17.$$p || nil, $post_args, args;
 
+        delete $$17.$$p;
         
+        ;
         
-        if ($iter) $$63.$$p = null;;
-        
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
+        $post_args = Opal.slice.call(arguments);
         
         args = $post_args;;
         
         if (args.length === 0) {
-          self.$raise($$($nesting, 'ArgumentError'), "no receiver given")
+          $Kernel.$raise($$$('ArgumentError'), "no receiver given")
         }
 
         var recv = args[0];
@@ -8847,23 +8784,21 @@ Opal.modules["corelib/string"] = function(Opal) {
         } else {
           return body.apply(recv, args.slice(1));
         }
-      ;}, $$63.$$s = self, $$63.$$arity = -1, $$63));
-    }, $String_to_proc$62.$$arity = 0);
+      ;}, -1);
+    }, 0);
     
-    Opal.def(self, '$to_s', $String_to_s$64 = function $$to_s() {
+    $def(self, '$to_s', function $$to_s() {
       var self = this;
 
       return self.toString();
-    }, $String_to_s$64.$$arity = 0);
-    $alias(self, "to_str", "to_s");
-    $alias(self, "to_sym", "intern");
+    }, 0);
     
-    Opal.def(self, '$tr', $String_tr$65 = function $$tr(from, to) {
+    $def(self, '$tr', function $$tr(from, to) {
       var self = this;
 
       
-      from = $coerce_to(from, $$($nesting, 'String'), 'to_str').$to_s();
-      to = $coerce_to(to, $$($nesting, 'String'), 'to_str').$to_s();
+      from = $coerce_to(from, $$$('String'), 'to_str').$to_s();
+      to = $coerce_to(to, $$$('String'), 'to_str').$to_s();
 
       if (from.length == 0 || from === to) {
         return self;
@@ -8910,7 +8845,7 @@ Opal.modules["corelib/string"] = function(Opal) {
           start = last_from.charCodeAt(0);
           end = ch.charCodeAt(0);
           if (start > end) {
-            self.$raise($$($nesting, 'ArgumentError'), "" + "invalid range \"" + (String.fromCharCode(start)) + "-" + (String.fromCharCode(end)) + "\" in string transliteration")
+            $Kernel.$raise($$$('ArgumentError'), "invalid range \"" + (String.fromCharCode(start)) + "-" + (String.fromCharCode(end)) + "\" in string transliteration")
           }
           for (c = start + 1; c < end; c++) {
             from_chars_expanded.push(String.fromCharCode(c));
@@ -8959,7 +8894,7 @@ Opal.modules["corelib/string"] = function(Opal) {
               start = last_to.charCodeAt(0);
               end = ch.charCodeAt(0);
               if (start > end) {
-                self.$raise($$($nesting, 'ArgumentError'), "" + "invalid range \"" + (String.fromCharCode(start)) + "-" + (String.fromCharCode(end)) + "\" in string transliteration")
+                $Kernel.$raise($$$('ArgumentError'), "invalid range \"" + (String.fromCharCode(start)) + "-" + (String.fromCharCode(end)) + "\" in string transliteration")
               }
               for (c = start + 1; c < end; c++) {
                 to_chars_expanded.push(String.fromCharCode(c));
@@ -9003,14 +8938,14 @@ Opal.modules["corelib/string"] = function(Opal) {
       }
       return self.$$cast(new_str);
     
-    }, $String_tr$65.$$arity = 2);
+    }, 2);
     
-    Opal.def(self, '$tr_s', $String_tr_s$66 = function $$tr_s(from, to) {
+    $def(self, '$tr_s', function $$tr_s(from, to) {
       var self = this;
 
       
-      from = $coerce_to(from, $$($nesting, 'String'), 'to_str').$to_s();
-      to = $coerce_to(to, $$($nesting, 'String'), 'to_str').$to_s();
+      from = $coerce_to(from, $$$('String'), 'to_str').$to_s();
+      to = $coerce_to(to, $$$('String'), 'to_str').$to_s();
 
       if (from.length == 0) {
         return self;
@@ -9057,7 +8992,7 @@ Opal.modules["corelib/string"] = function(Opal) {
           start = last_from.charCodeAt(0);
           end = ch.charCodeAt(0);
           if (start > end) {
-            self.$raise($$($nesting, 'ArgumentError'), "" + "invalid range \"" + (String.fromCharCode(start)) + "-" + (String.fromCharCode(end)) + "\" in string transliteration")
+            $Kernel.$raise($$$('ArgumentError'), "invalid range \"" + (String.fromCharCode(start)) + "-" + (String.fromCharCode(end)) + "\" in string transliteration")
           }
           for (c = start + 1; c < end; c++) {
             from_chars_expanded.push(String.fromCharCode(c));
@@ -9106,7 +9041,7 @@ Opal.modules["corelib/string"] = function(Opal) {
               start = last_from.charCodeAt(0);
               end = ch.charCodeAt(0);
               if (start > end) {
-                self.$raise($$($nesting, 'ArgumentError'), "" + "invalid range \"" + (String.fromCharCode(start)) + "-" + (String.fromCharCode(end)) + "\" in string transliteration")
+                $Kernel.$raise($$$('ArgumentError'), "invalid range \"" + (String.fromCharCode(start)) + "-" + (String.fromCharCode(end)) + "\" in string transliteration")
               }
               for (c = start + 1; c < end; c++) {
                 to_chars_expanded.push(String.fromCharCode(c));
@@ -9168,33 +9103,29 @@ Opal.modules["corelib/string"] = function(Opal) {
       }
       return self.$$cast(new_str);
     
-    }, $String_tr_s$66.$$arity = 2);
+    }, 2);
     
-    Opal.def(self, '$upcase', $String_upcase$67 = function $$upcase() {
+    $def(self, '$upcase', function $$upcase() {
       var self = this;
 
       return self.$$cast(self.toUpperCase());
-    }, $String_upcase$67.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$upto', $String_upto$68 = function $$upto(stop, excl) {
-      var $iter = $String_upto$68.$$p, block = $iter || nil, self = this;
+    $def(self, '$upto', function $$upto(stop, excl) {
+      var block = $$upto.$$p || nil, self = this;
 
-      if ($iter) $String_upto$68.$$p = null;
+      delete $$upto.$$p;
       
+      ;
       
-      if ($iter) $String_upto$68.$$p = null;;
-      
-      if (excl == null) {
-        excl = false;
-      };
-      if ((block !== nil)) {
-      } else {
-        return self.$enum_for("upto", stop, excl)
+      if (excl == null) excl = false;;
+      if (!(block !== nil)) {
+        return self.$enum_for("upto", stop, excl)
       };
       
       var a, b, s = self.toString();
 
-      stop = $coerce_to(stop, $$($nesting, 'String'), 'to_str');
+      stop = $coerce_to(stop, $$$('String'), 'to_str');
 
       if (s.length === 1 && stop.length === 1) {
 
@@ -9241,7 +9172,7 @@ Opal.modules["corelib/string"] = function(Opal) {
       }
       return self;
     ;
-    }, $String_upto$68.$$arity = -2);
+    }, -2);
     
     function char_class_from_char_sets(sets) {
       function explode_sequences_in_character_set(set) {
@@ -9258,7 +9189,7 @@ Opal.modules["corelib/string"] = function(Opal) {
             char_code_from = set.charCodeAt(i - 1);
             char_code_upto = set.charCodeAt(i + 1);
             if (char_code_from > char_code_upto) {
-              self.$raise($$($nesting, 'ArgumentError'), "" + "invalid range \"" + (char_code_from) + "-" + (char_code_upto) + "\" in string transliteration")
+              $Kernel.$raise($$$('ArgumentError'), "invalid range \"" + (char_code_from) + "-" + (char_code_upto) + "\" in string transliteration")
             }
             for (char_code = char_code_from + 1; char_code < char_code_upto + 1; char_code++) {
               result += String.fromCharCode(char_code);
@@ -9294,7 +9225,7 @@ Opal.modules["corelib/string"] = function(Opal) {
           neg_intersection = '';
 
       for (i = 0, len = sets.length; i < len; i++) {
-        set = $coerce_to(sets[i], $$($nesting, 'String'), 'to_str');
+        set = $coerce_to(sets[i], $$$('String'), 'to_str');
         neg = (set.charAt(0) === '^' && set.length > 1);
         set = explode_sequences_in_character_set(neg ? set.slice(1) : set);
         if (neg) {
@@ -9317,72 +9248,64 @@ Opal.modules["corelib/string"] = function(Opal) {
       }
 
       if (pos_intersection.length > 0) {
-        return '[' + $$($nesting, 'Regexp').$escape(pos_intersection) + ']';
+        return '[' + $$$('Regexp').$escape(pos_intersection) + ']';
       }
 
       if (neg_intersection.length > 0) {
-        return '[^' + $$($nesting, 'Regexp').$escape(neg_intersection) + ']';
+        return '[^' + $$$('Regexp').$escape(neg_intersection) + ']';
       }
 
       return null;
     }
   ;
     
-    Opal.def(self, '$instance_variables', $String_instance_variables$69 = function $$instance_variables() {
-      var self = this;
-
+    $def(self, '$instance_variables', function $$instance_variables() {
+      
       return []
-    }, $String_instance_variables$69.$$arity = 0);
-    Opal.defs(self, '$_load', $String__load$70 = function $$_load($a) {
+    }, 0);
+    $defs(self, '$_load', function $$_load($a) {
       var $post_args, args, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
-      return $send(self, 'new', Opal.to_a(args));
-    }, $String__load$70.$$arity = -1);
+      return $send(self, 'new', $to_a(args));
+    }, -1);
     
-    Opal.def(self, '$unicode_normalize', $String_unicode_normalize$71 = function $$unicode_normalize(form) {
+    $def(self, '$unicode_normalize', function $$unicode_normalize(form) {
       var self = this;
 
       
       
-      if (form == null) {
-        form = "nfc";
-      };
-      if ($truthy(["nfc", "nfd", "nfkc", "nfkd"]['$include?'](form))) {
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "" + "Invalid normalization form " + (form))
+      if (form == null) form = "nfc";;
+      if (!$truthy(["nfc", "nfd", "nfkc", "nfkd"]['$include?'](form))) {
+        $Kernel.$raise($$$('ArgumentError'), "Invalid normalization form " + (form))
       };
       return self.normalize(form.$upcase());
-    }, $String_unicode_normalize$71.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$unicode_normalized?', $String_unicode_normalized$ques$72 = function(form) {
+    $def(self, '$unicode_normalized?', function $String_unicode_normalized$ques$18(form) {
       var self = this;
 
       
       
-      if (form == null) {
-        form = "nfc";
-      };
+      if (form == null) form = "nfc";;
       return self.$unicode_normalize(form)['$=='](self);
-    }, $String_unicode_normalized$ques$72.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$unpack', $String_unpack$73 = function $$unpack(format) {
-      var self = this;
-
-      return self.$raise("To use String#unpack, you must first require 'corelib/string/unpack'.")
-    }, $String_unpack$73.$$arity = 1);
+    $def(self, '$unpack', function $$unpack(format) {
+      
+      return $Kernel.$raise("To use String#unpack, you must first require 'corelib/string/unpack'.")
+    }, 1);
     
-    Opal.def(self, '$unpack1', $String_unpack1$74 = function $$unpack1(format) {
-      var self = this;
-
-      return self.$raise("To use String#unpack1, you must first require 'corelib/string/unpack'.")
-    }, $String_unpack1$74.$$arity = 1);
+    $def(self, '$unpack1', function $$unpack1(format) {
+      
+      return $Kernel.$raise("To use String#unpack1, you must first require 'corelib/string/unpack'.")
+    }, 1);
     
-    Opal.def(self, '$freeze', $String_freeze$75 = function $$freeze() {
+    $def(self, '$freeze', function $$freeze() {
       var self = this;
 
       
@@ -9390,10 +9313,9 @@ Opal.modules["corelib/string"] = function(Opal) {
       self.$$frozen = true;
       return self;
     
-    }, $String_freeze$75.$$arity = 0);
-    $alias(self, "+@", "dup");
+    }, 0);
     
-    Opal.def(self, '$-@', $String_$minus$$76 = function() {
+    $def(self, '$-@', function $String_$minus$$19() {
       var self = this;
 
       
@@ -9402,49 +9324,36 @@ Opal.modules["corelib/string"] = function(Opal) {
       if (self.encoding.name == 'UTF-8' && self.internal_encoding.name == 'UTF-8') return self.toString();
       return self.$dup().$freeze();
     
-    }, $String_$minus$$76.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$frozen?', $String_frozen$ques$77 = function() {
+    $def(self, '$frozen?', function $String_frozen$ques$20() {
       var self = this;
 
       return typeof self === 'string' || self.$$frozen === true;
-    }, $String_frozen$ques$77.$$arity = 0);
-    return $$($nesting, 'Opal').$pristine(self, "initialize");
-  })($nesting[0], String, $nesting);
-  return Opal.const_set($nesting[0], 'Symbol', $$($nesting, 'String'));
+    }, 0);
+    $alias(self, "+@", "dup");
+    $alias(self, "===", "==");
+    $alias(self, "byteslice", "[]");
+    $alias(self, "eql?", "==");
+    $alias(self, "equal?", "===");
+    $alias(self, "object_id", "__id__");
+    $alias(self, "slice", "[]");
+    $alias(self, "succ", "next");
+    $alias(self, "to_str", "to_s");
+    $alias(self, "to_sym", "intern");
+    return $Opal.$pristine(self, "initialize");
+  })('::', String, $nesting);
+  return $const_set($nesting[0], 'Symbol', $$('String'));
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/enumerable"] = function(Opal) {
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_times(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs * rhs : lhs['$*'](rhs);
-  }
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_divide(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs / rhs : lhs['$/'](rhs);
-  }
-  function $rb_le(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs <= rhs : lhs['$<='](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $falsy = Opal.falsy, $truthy = Opal.truthy, $coerce_to = Opal.coerce_to, $module = Opal.module, $send = Opal.send, $alias = Opal.alias, $hash2 = Opal.hash2, $lambda = Opal.lambda;
+Opal.modules["corelib/enumerable"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var nil = Opal.nil, $$$ = Opal.$$$, $truthy = Opal.truthy, $coerce_to = Opal.coerce_to, $yield1 = Opal.yield1, $yieldX = Opal.yieldX, $module = Opal.module, $send = Opal.send, $to_a = Opal.to_a, $Opal = Opal.Opal, $def = Opal.def, $Kernel = Opal.Kernel, $rb_gt = Opal.rb_gt, $rb_times = Opal.rb_times, $rb_lt = Opal.rb_lt, $eqeq = Opal.eqeq, $rb_plus = Opal.rb_plus, $rb_minus = Opal.rb_minus, $rb_divide = Opal.rb_divide, $rb_le = Opal.rb_le, $hash2 = Opal.hash2, $lambda = Opal.lambda, $not = Opal.not, $alias = Opal.alias;
 
-  Opal.add_stubs(['$each', '$public_send', '$destructure', '$to_enum', '$enumerator_size', '$new', '$yield', '$raise', '$slice_when', '$!', '$enum_for', '$flatten', '$map', '$warn', '$proc', '$==', '$nil?', '$respond_to?', '$coerce_to!', '$>', '$*', '$try_convert', '$<', '$+', '$-', '$ceil', '$/', '$size', '$select', '$to_proc', '$__send__', '$length', '$<=', '$[]', '$push', '$<<', '$[]=', '$===', '$inspect', '$<=>', '$first', '$reverse', '$sort', '$take', '$sort_by', '$compare', '$call', '$dup', '$to_a', '$sort!', '$map!', '$key?', '$values', '$transform_values', '$group_by', '$to_h', '$coerce_to?', '$class', '$zip']);
-  return (function($base, $parent_nesting) {
+  Opal.add_stubs('each,public_send,destructure,to_enum,enumerator_size,new,yield,raise,slice_when,!,enum_for,flatten,map,compact,to_a,warn,proc,==,nil?,respond_to?,coerce_to!,>,*,try_convert,<,+,-,ceil,/,size,select,to_proc,__send__,length,<=,[],push,<<,[]=,===,inspect,<=>,first,reverse,sort,take,sort_by,compare,call,dup,sort!,map!,include?,-@,key?,values,transform_values,group_by,fetch,to_h,coerce_to?,class,zip');
+  return (function($base) {
     var self = $module($base, 'Enumerable');
 
-    var $nesting = [self].concat($parent_nesting), $Enumerable_all$ques$1, $Enumerable_any$ques$5, $Enumerable_chunk$9, $Enumerable_chunk_while$12, $Enumerable_collect$14, $Enumerable_collect_concat$16, $Enumerable_count$19, $Enumerable_cycle$23, $Enumerable_detect$25, $Enumerable_drop$27, $Enumerable_drop_while$28, $Enumerable_each_cons$29, $Enumerable_each_entry$31, $Enumerable_each_slice$33, $Enumerable_each_with_index$35, $Enumerable_each_with_object$37, $Enumerable_entries$39, $Enumerable_filter_map$40, $Enumerable_find_all$42, $Enumerable_find_index$44, $Enumerable_first$47, $Enumerable_grep$50, $Enumerable_grep_v$52, $Enumerable_group_by$54, $Enumerable_include$ques$56, $Enumerable_inject$58, $Enumerable_lazy$59, $Enumerable_enumerator_size$61, $Enumerable_max$62, $Enumerable_max_by$63, $Enumerable_min$65, $Enumerable_min_by$67, $Enumerable_minmax$69, $Enumerable_minmax_by$71, $Enumerable_none$ques$73, $Enumerable_one$ques$77, $Enumerable_partition$81, $Enumerable_reject$83, $Enumerable_reverse_each$85, $Enumerable_slice_before$87, $Enumerable_slice_after$89, $Enumerable_slice_when$92, $Enumerable_sort$94, $Enumerable_sort_by$96, $Enumerable_sum$101, $Enumerable_take$103, $Enumerable_take_while$104, $Enumerable_uniq$106, $Enumerable_tally$108, $Enumerable_to_h$109, $Enumerable_zip$110;
-
+    
     
     
     function comparableForPattern(value) {
@@ -9460,134 +9369,128 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
     }
   ;
     
-    Opal.def(self, '$all?', $Enumerable_all$ques$1 = function(pattern) {try {
+    $def(self, '$all?', function $Enumerable_all$ques$1(pattern) {try {
 
-      var $iter = $Enumerable_all$ques$1.$$p, block = $iter || nil, $$2, $$3, $$4, self = this;
+      var block = $Enumerable_all$ques$1.$$p || nil, self = this;
 
-      if ($iter) $Enumerable_all$ques$1.$$p = null;
+      delete $Enumerable_all$ques$1.$$p;
       
-      
-      if ($iter) $Enumerable_all$ques$1.$$p = null;;
+      ;
       ;
       if ($truthy(pattern !== undefined)) {
-        $send(self, 'each', [], ($$2 = function($a){var self = $$2.$$s == null ? this : $$2.$$s, $post_args, value, comparable = nil;
+        $send(self, 'each', [], function $$2($a){var $post_args, value, comparable = nil;
 
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
           value = $post_args;;
           comparable = comparableForPattern(value);
-          if ($truthy($send(pattern, 'public_send', ["==="].concat(Opal.to_a(comparable))))) {
+          if ($truthy($send(pattern, 'public_send', ["==="].concat($to_a(comparable))))) {
             return nil
           } else {
             Opal.ret(false)
-          };}, $$2.$$s = self, $$2.$$arity = -1, $$2))
+          };}, -1)
       } else if ((block !== nil)) {
-        $send(self, 'each', [], ($$3 = function($a){var self = $$3.$$s == null ? this : $$3.$$s, $post_args, value;
+        $send(self, 'each', [], function $$3($a){var $post_args, value;
 
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
           value = $post_args;;
-          if ($truthy(Opal.yieldX(block, Opal.to_a(value)))) {
+          if ($truthy(Opal.yieldX(block, $to_a(value)))) {
             return nil
           } else {
             Opal.ret(false)
-          };}, $$3.$$s = self, $$3.$$arity = -1, $$3))
+          };}, -1)
       } else {
-        $send(self, 'each', [], ($$4 = function($a){var self = $$4.$$s == null ? this : $$4.$$s, $post_args, value;
+        $send(self, 'each', [], function $$4($a){var $post_args, value;
 
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
           value = $post_args;;
-          if ($truthy($$($nesting, 'Opal').$destructure(value))) {
+          if ($truthy($Opal.$destructure(value))) {
             return nil
           } else {
             Opal.ret(false)
-          };}, $$4.$$s = self, $$4.$$arity = -1, $$4))
+          };}, -1)
       };
       return true;
       } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
-    }, $Enumerable_all$ques$1.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$any?', $Enumerable_any$ques$5 = function(pattern) {try {
+    $def(self, '$any?', function $Enumerable_any$ques$5(pattern) {try {
 
-      var $iter = $Enumerable_any$ques$5.$$p, block = $iter || nil, $$6, $$7, $$8, self = this;
+      var block = $Enumerable_any$ques$5.$$p || nil, self = this;
 
-      if ($iter) $Enumerable_any$ques$5.$$p = null;
+      delete $Enumerable_any$ques$5.$$p;
       
-      
-      if ($iter) $Enumerable_any$ques$5.$$p = null;;
+      ;
       ;
       if ($truthy(pattern !== undefined)) {
-        $send(self, 'each', [], ($$6 = function($a){var self = $$6.$$s == null ? this : $$6.$$s, $post_args, value, comparable = nil;
+        $send(self, 'each', [], function $$6($a){var $post_args, value, comparable = nil;
 
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
           value = $post_args;;
           comparable = comparableForPattern(value);
-          if ($truthy($send(pattern, 'public_send', ["==="].concat(Opal.to_a(comparable))))) {
+          if ($truthy($send(pattern, 'public_send', ["==="].concat($to_a(comparable))))) {
             Opal.ret(true)
           } else {
             return nil
-          };}, $$6.$$s = self, $$6.$$arity = -1, $$6))
+          };}, -1)
       } else if ((block !== nil)) {
-        $send(self, 'each', [], ($$7 = function($a){var self = $$7.$$s == null ? this : $$7.$$s, $post_args, value;
+        $send(self, 'each', [], function $$7($a){var $post_args, value;
 
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
           value = $post_args;;
-          if ($truthy(Opal.yieldX(block, Opal.to_a(value)))) {
+          if ($truthy(Opal.yieldX(block, $to_a(value)))) {
             Opal.ret(true)
           } else {
             return nil
-          };}, $$7.$$s = self, $$7.$$arity = -1, $$7))
+          };}, -1)
       } else {
-        $send(self, 'each', [], ($$8 = function($a){var self = $$8.$$s == null ? this : $$8.$$s, $post_args, value;
+        $send(self, 'each', [], function $$8($a){var $post_args, value;
 
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
           value = $post_args;;
-          if ($truthy($$($nesting, 'Opal').$destructure(value))) {
+          if ($truthy($Opal.$destructure(value))) {
             Opal.ret(true)
           } else {
             return nil
-          };}, $$8.$$s = self, $$8.$$arity = -1, $$8))
+          };}, -1)
       };
       return false;
       } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
-    }, $Enumerable_any$ques$5.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$chunk', $Enumerable_chunk$9 = function $$chunk() {
-      var $iter = $Enumerable_chunk$9.$$p, block = $iter || nil, $$10, $$11, self = this;
+    $def(self, '$chunk', function $$chunk() {
+      var block = $$chunk.$$p || nil, self = this;
 
-      if ($iter) $Enumerable_chunk$9.$$p = null;
+      delete $$chunk.$$p;
       
-      
-      if ($iter) $Enumerable_chunk$9.$$p = null;;
-      if ((block !== nil)) {
-      } else {
-        return $send(self, 'to_enum', ["chunk"], ($$10 = function(){var self = $$10.$$s == null ? this : $$10.$$s;
+      ;
+      if (!(block !== nil)) {
+        return $send(self, 'to_enum', ["chunk"], function $$9(){var self = $$9.$$s == null ? this : $$9.$$s;
 
-          return self.$enumerator_size()}, $$10.$$s = self, $$10.$$arity = 0, $$10))
+          return self.$enumerator_size()}, {$$arity: 0, $$s: self})
       };
-      return $send($$$('::', 'Enumerator'), 'new', [], ($$11 = function(yielder){var self = $$11.$$s == null ? this : $$11.$$s;
+      return $send($$$('Enumerator'), 'new', [], function $$10(yielder){var self = $$10.$$s == null ? this : $$10.$$s;
 
         
         
-        if (yielder == null) {
-          yielder = nil;
-        };
+        if (yielder == null) yielder = nil;;
         
         var previous = nil, accumulate = [];
 
@@ -9598,7 +9501,7 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
         }
 
         self.$each.$$p = function(value) {
-          var key = Opal.yield1(block, value);
+          var key = $yield1(block, value);
 
           if (key === nil) {
             releaseAccumulate();
@@ -9619,52 +9522,43 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
         self.$each();
 
         releaseAccumulate();
-      ;}, $$11.$$s = self, $$11.$$arity = 1, $$11));
-    }, $Enumerable_chunk$9.$$arity = 0);
+      ;}, {$$arity: 1, $$s: self});
+    }, 0);
     
-    Opal.def(self, '$chunk_while', $Enumerable_chunk_while$12 = function $$chunk_while() {
-      var $iter = $Enumerable_chunk_while$12.$$p, block = $iter || nil, $$13, self = this;
+    $def(self, '$chunk_while', function $$chunk_while() {
+      var block = $$chunk_while.$$p || nil, self = this;
 
-      if ($iter) $Enumerable_chunk_while$12.$$p = null;
-      
+      delete $$chunk_while.$$p;
       
-      if ($iter) $Enumerable_chunk_while$12.$$p = null;;
-      if ((block !== nil)) {
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "no block given")
+      ;
+      if (!(block !== nil)) {
+        $Kernel.$raise($$$('ArgumentError'), "no block given")
       };
-      return $send(self, 'slice_when', [], ($$13 = function(before, after){var self = $$13.$$s == null ? this : $$13.$$s;
-
+      return $send(self, 'slice_when', [], function $$11(before, after){
         
         
-        if (before == null) {
-          before = nil;
-        };
+        if (before == null) before = nil;;
         
-        if (after == null) {
-          after = nil;
-        };
-        return Opal.yieldX(block, [before, after])['$!']();}, $$13.$$s = self, $$13.$$arity = 2, $$13));
-    }, $Enumerable_chunk_while$12.$$arity = 0);
+        if (after == null) after = nil;;
+        return Opal.yieldX(block, [before, after])['$!']();}, 2);
+    }, 0);
     
-    Opal.def(self, '$collect', $Enumerable_collect$14 = function $$collect() {
-      var $iter = $Enumerable_collect$14.$$p, block = $iter || nil, $$15, self = this;
+    $def(self, '$collect', function $$collect() {
+      var block = $$collect.$$p || nil, self = this;
 
-      if ($iter) $Enumerable_collect$14.$$p = null;
+      delete $$collect.$$p;
       
-      
-      if ($iter) $Enumerable_collect$14.$$p = null;;
-      if ((block !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["collect"], ($$15 = function(){var self = $$15.$$s == null ? this : $$15.$$s;
+      ;
+      if (!(block !== nil)) {
+        return $send(self, 'enum_for', ["collect"], function $$12(){var self = $$12.$$s == null ? this : $$12.$$s;
 
-          return self.$enumerator_size()}, $$15.$$s = self, $$15.$$arity = 0, $$15))
+          return self.$enumerator_size()}, {$$arity: 0, $$s: self})
       };
       
       var result = [];
 
       self.$each.$$p = function() {
-        var value = Opal.yieldX(block, arguments);
+        var value = $yieldX(block, arguments);
 
         result.push(value);
       };
@@ -9673,38 +9567,38 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
 
       return result;
     ;
-    }, $Enumerable_collect$14.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$collect_concat', $Enumerable_collect_concat$16 = function $$collect_concat() {
-      var $iter = $Enumerable_collect_concat$16.$$p, block = $iter || nil, $$17, $$18, self = this;
+    $def(self, '$collect_concat', function $$collect_concat() {
+      var block = $$collect_concat.$$p || nil, self = this;
 
-      if ($iter) $Enumerable_collect_concat$16.$$p = null;
+      delete $$collect_concat.$$p;
       
-      
-      if ($iter) $Enumerable_collect_concat$16.$$p = null;;
-      if ((block !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["collect_concat"], ($$17 = function(){var self = $$17.$$s == null ? this : $$17.$$s;
+      ;
+      if (!(block !== nil)) {
+        return $send(self, 'enum_for', ["collect_concat"], function $$13(){var self = $$13.$$s == null ? this : $$13.$$s;
 
-          return self.$enumerator_size()}, $$17.$$s = self, $$17.$$arity = 0, $$17))
+          return self.$enumerator_size()}, {$$arity: 0, $$s: self})
       };
-      return $send(self, 'map', [], ($$18 = function(item){var self = $$18.$$s == null ? this : $$18.$$s;
-
+      return $send(self, 'map', [], function $$14(item){
         
         
-        if (item == null) {
-          item = nil;
-        };
-        return Opal.yield1(block, item);;}, $$18.$$s = self, $$18.$$arity = 1, $$18)).$flatten(1);
-    }, $Enumerable_collect_concat$16.$$arity = 0);
+        if (item == null) item = nil;;
+        return Opal.yield1(block, item);;}, 1).$flatten(1);
+    }, 0);
     
-    Opal.def(self, '$count', $Enumerable_count$19 = function $$count(object) {
-      var $iter = $Enumerable_count$19.$$p, block = $iter || nil, $$20, $$21, $$22, self = this, result = nil;
+    $def(self, '$compact', function $$compact() {
+      var self = this;
 
-      if ($iter) $Enumerable_count$19.$$p = null;
-      
+      return self.$to_a().$compact()
+    }, 0);
+    
+    $def(self, '$count', function $$count(object) {
+      var block = $$count.$$p || nil, self = this, result = nil;
+
+      delete $$count.$$p;
       
-      if ($iter) $Enumerable_count$19.$$p = null;;
+      ;
       ;
       result = 0;
       
@@ -9713,77 +9607,73 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
       }
     ;
       if ($truthy(object != null)) {
-        block = $send(self, 'proc', [], ($$20 = function($a){var self = $$20.$$s == null ? this : $$20.$$s, $post_args, args;
+        block = $send($Kernel, 'proc', [], function $$15($a){var $post_args, args;
 
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
           args = $post_args;;
-          return $$($nesting, 'Opal').$destructure(args)['$=='](object);}, $$20.$$s = self, $$20.$$arity = -1, $$20))
+          return $Opal.$destructure(args)['$=='](object);}, -1)
       } else if ($truthy(block['$nil?']())) {
-        block = $send(self, 'proc', [], ($$21 = function(){var self = $$21.$$s == null ? this : $$21.$$s;
-
-          return true}, $$21.$$s = self, $$21.$$arity = 0, $$21))};
-      $send(self, 'each', [], ($$22 = function($a){var self = $$22.$$s == null ? this : $$22.$$s, $post_args, args;
+        block = $send($Kernel, 'proc', [], function $$16(){
+          return true}, 0)
+      };
+      $send(self, 'each', [], function $$17($a){var $post_args, args;
 
         
         
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
+        $post_args = Opal.slice.call(arguments);
         
         args = $post_args;;
-        if ($truthy(Opal.yieldX(block, args))) {
+        if ($truthy($yieldX(block, args))) {
           return result++;
         } else {
           return nil
-        };}, $$22.$$s = self, $$22.$$arity = -1, $$22));
+        };}, -1);
       return result;
-    }, $Enumerable_count$19.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$cycle', $Enumerable_cycle$23 = function $$cycle(n) {
-      var $iter = $Enumerable_cycle$23.$$p, block = $iter || nil, $$24, self = this;
+    $def(self, '$cycle', function $$cycle(n) {
+      var block = $$cycle.$$p || nil, self = this;
 
-      if ($iter) $Enumerable_cycle$23.$$p = null;
-      
+      delete $$cycle.$$p;
       
-      if ($iter) $Enumerable_cycle$23.$$p = null;;
+      ;
       
-      if (n == null) {
-        n = nil;
-      };
-      if ((block !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["cycle", n], ($$24 = function(){var self = $$24.$$s == null ? this : $$24.$$s;
+      if (n == null) n = nil;;
+      if (!(block !== nil)) {
+        return $send(self, 'enum_for', ["cycle", n], function $$18(){var self = $$18.$$s == null ? this : $$18.$$s;
 
           if ($truthy(n['$nil?']())) {
             if ($truthy(self['$respond_to?']("size"))) {
-              return $$$($$($nesting, 'Float'), 'INFINITY')
+              return $$$($$$('Float'), 'INFINITY')
             } else {
               return nil
             }
           } else {
             
-            n = $$($nesting, 'Opal')['$coerce_to!'](n, $$($nesting, 'Integer'), "to_int");
+            n = $Opal['$coerce_to!'](n, $$$('Integer'), "to_int");
             if ($truthy($rb_gt(n, 0))) {
               return $rb_times(self.$enumerator_size(), n)
             } else {
               return 0
             };
-          }}, $$24.$$s = self, $$24.$$arity = 0, $$24))
+          }}, {$$arity: 0, $$s: self})
       };
-      if ($truthy(n['$nil?']())) {
-      } else {
+      if (!$truthy(n['$nil?']())) {
         
-        n = $$($nesting, 'Opal')['$coerce_to!'](n, $$($nesting, 'Integer'), "to_int");
+        n = $Opal['$coerce_to!'](n, $$$('Integer'), "to_int");
         if ($truthy(n <= 0)) {
-          return nil};
+          return nil
+        };
       };
       
       var all = [], i, length, value;
 
       self.$each.$$p = function() {
-        var param = $$($nesting, 'Opal').$destructure(arguments),
-            value = Opal.yield1(block, param);
+        var param = $Opal.$destructure(arguments),
+            value = $yield1(block, param);
 
         all.push(param);
       }
@@ -9797,48 +9687,46 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
       if (n === nil) {
         while (true) {
           for (i = 0, length = all.length; i < length; i++) {
-            value = Opal.yield1(block, all[i]);
+            value = $yield1(block, all[i]);
           }
         }
       }
       else {
         while (n > 1) {
           for (i = 0, length = all.length; i < length; i++) {
-            value = Opal.yield1(block, all[i]);
+            value = $yield1(block, all[i]);
           }
 
           n--;
         }
       }
     ;
-    }, $Enumerable_cycle$23.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$detect', $Enumerable_detect$25 = function $$detect(ifnone) {try {
+    $def(self, '$detect', function $$detect(ifnone) {try {
 
-      var $iter = $Enumerable_detect$25.$$p, block = $iter || nil, $$26, self = this;
+      var block = $$detect.$$p || nil, self = this;
 
-      if ($iter) $Enumerable_detect$25.$$p = null;
-      
+      delete $$detect.$$p;
       
-      if ($iter) $Enumerable_detect$25.$$p = null;;
       ;
-      if ((block !== nil)) {
-      } else {
+      ;
+      if (!(block !== nil)) {
         return self.$enum_for("detect", ifnone)
       };
-      $send(self, 'each', [], ($$26 = function($a){var self = $$26.$$s == null ? this : $$26.$$s, $post_args, args, value = nil;
+      $send(self, 'each', [], function $$19($a){var $post_args, args, value = nil;
 
         
         
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
+        $post_args = Opal.slice.call(arguments);
         
         args = $post_args;;
-        value = $$($nesting, 'Opal').$destructure(args);
+        value = $Opal.$destructure(args);
         if ($truthy(Opal.yield1(block, value))) {
           Opal.ret(value)
         } else {
           return nil
-        };}, $$26.$$s = self, $$26.$$arity = -1, $$26));
+        };}, -1);
       
       if (ifnone !== undefined) {
         if (typeof(ifnone) === 'function') {
@@ -9850,22 +9738,23 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
     ;
       return nil;
       } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
-    }, $Enumerable_detect$25.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$drop', $Enumerable_drop$27 = function $$drop(number) {
+    $def(self, '$drop', function $$drop(number) {
       var self = this;
 
       
-      number = $coerce_to(number, $$($nesting, 'Integer'), 'to_int');
+      number = $coerce_to(number, $$$('Integer'), 'to_int');
       if ($truthy(number < 0)) {
-        self.$raise($$($nesting, 'ArgumentError'), "attempt to drop negative size")};
+        $Kernel.$raise($$$('ArgumentError'), "attempt to drop negative size")
+      };
       
       var result  = [],
           current = 0;
 
       self.$each.$$p = function() {
         if (number <= current) {
-          result.push($$($nesting, 'Opal').$destructure(arguments));
+          result.push($Opal.$destructure(arguments));
         }
 
         current++;
@@ -9875,17 +9764,15 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
 
       return result;
     ;
-    }, $Enumerable_drop$27.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$drop_while', $Enumerable_drop_while$28 = function $$drop_while() {
-      var $iter = $Enumerable_drop_while$28.$$p, block = $iter || nil, self = this;
+    $def(self, '$drop_while', function $$drop_while() {
+      var block = $$drop_while.$$p || nil, self = this;
 
-      if ($iter) $Enumerable_drop_while$28.$$p = null;
+      delete $$drop_while.$$p;
       
-      
-      if ($iter) $Enumerable_drop_while$28.$$p = null;;
-      if ((block !== nil)) {
-      } else {
+      ;
+      if (!(block !== nil)) {
         return self.$enum_for("drop_while")
       };
       
@@ -9893,12 +9780,12 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
           dropping = true;
 
       self.$each.$$p = function() {
-        var param = $$($nesting, 'Opal').$destructure(arguments);
+        var param = $Opal.$destructure(arguments);
 
         if (dropping) {
-          var value = Opal.yield1(block, param);
+          var value = $yield1(block, param);
 
-          if ($falsy(value)) {
+          if (!$truthy(value)) {
             dropping = false;
             result.push(param);
           }
@@ -9912,118 +9799,111 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
 
       return result;
     ;
-    }, $Enumerable_drop_while$28.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$each_cons', $Enumerable_each_cons$29 = function $$each_cons(n) {
-      var $iter = $Enumerable_each_cons$29.$$p, block = $iter || nil, $$30, self = this;
+    $def(self, '$each_cons', function $$each_cons(n) {
+      var block = $$each_cons.$$p || nil, self = this;
 
-      if ($iter) $Enumerable_each_cons$29.$$p = null;
+      delete $$each_cons.$$p;
       
-      
-      if ($iter) $Enumerable_each_cons$29.$$p = null;;
+      ;
       if ($truthy(arguments.length != 1)) {
-        self.$raise($$($nesting, 'ArgumentError'), "" + "wrong number of arguments (" + (arguments.length) + " for 1)")};
-      n = $$($nesting, 'Opal').$try_convert(n, $$($nesting, 'Integer'), "to_int");
+        $Kernel.$raise($$$('ArgumentError'), "wrong number of arguments (" + (arguments.length) + " for 1)")
+      };
+      n = $Opal.$try_convert(n, $$$('Integer'), "to_int");
       if ($truthy(n <= 0)) {
-        self.$raise($$($nesting, 'ArgumentError'), "invalid size")};
-      if ((block !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["each_cons", n], ($$30 = function(){var self = $$30.$$s == null ? this : $$30.$$s, enum_size = nil, $ret_or_1 = nil;
+        $Kernel.$raise($$$('ArgumentError'), "invalid size")
+      };
+      if (!(block !== nil)) {
+        return $send(self, 'enum_for', ["each_cons", n], function $$20(){var self = $$20.$$s == null ? this : $$20.$$s, enum_size = nil;
 
           
           enum_size = self.$enumerator_size();
           if ($truthy(enum_size['$nil?']())) {
             return nil
-          } else if ($truthy((function() {if ($truthy(($ret_or_1 = enum_size['$=='](0)))) {
-            return $ret_or_1
-          } else {
-            return $rb_lt(enum_size, n)
-          }; return nil; })())) {
+          } else if (($eqeq(enum_size, 0) || ($truthy($rb_lt(enum_size, n))))) {
             return 0
           } else {
             return $rb_plus($rb_minus(enum_size, n), 1)
-          };}, $$30.$$s = self, $$30.$$arity = 0, $$30))
+          };}, {$$arity: 0, $$s: self})
       };
       
       var buffer = [];
 
       self.$each.$$p = function() {
-        var element = $$($nesting, 'Opal').$destructure(arguments);
+        var element = $Opal.$destructure(arguments);
         buffer.push(element);
         if (buffer.length > n) {
           buffer.shift();
         }
         if (buffer.length == n) {
-          Opal.yield1(block, buffer.slice(0, n));
+          $yield1(block, buffer.slice(0, n));
         }
       }
 
       self.$each();
 
-      return nil;
+      return self;
     ;
-    }, $Enumerable_each_cons$29.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$each_entry', $Enumerable_each_entry$31 = function $$each_entry($a) {
-      var $iter = $Enumerable_each_entry$31.$$p, block = $iter || nil, $post_args, data, $$32, self = this;
+    $def(self, '$each_entry', function $$each_entry($a) {
+      var block = $$each_entry.$$p || nil, $post_args, data, self = this;
 
-      if ($iter) $Enumerable_each_entry$31.$$p = null;
-      
+      delete $$each_entry.$$p;
       
-      if ($iter) $Enumerable_each_entry$31.$$p = null;;
+      ;
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       data = $post_args;;
-      if ((block !== nil)) {
-      } else {
-        return $send(self, 'to_enum', ["each_entry"].concat(Opal.to_a(data)), ($$32 = function(){var self = $$32.$$s == null ? this : $$32.$$s;
+      if (!(block !== nil)) {
+        return $send(self, 'to_enum', ["each_entry"].concat($to_a(data)), function $$21(){var self = $$21.$$s == null ? this : $$21.$$s;
 
-          return self.$enumerator_size()}, $$32.$$s = self, $$32.$$arity = 0, $$32))
+          return self.$enumerator_size()}, {$$arity: 0, $$s: self})
       };
       
       self.$each.$$p = function() {
-        var item = $$($nesting, 'Opal').$destructure(arguments);
+        var item = $Opal.$destructure(arguments);
 
-        Opal.yield1(block, item);
+        $yield1(block, item);
       }
 
       self.$each.apply(self, data);
 
       return self;
     ;
-    }, $Enumerable_each_entry$31.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$each_slice', $Enumerable_each_slice$33 = function $$each_slice(n) {
-      var $iter = $Enumerable_each_slice$33.$$p, block = $iter || nil, $$34, self = this;
+    $def(self, '$each_slice', function $$each_slice(n) {
+      var block = $$each_slice.$$p || nil, self = this;
 
-      if ($iter) $Enumerable_each_slice$33.$$p = null;
-      
+      delete $$each_slice.$$p;
       
-      if ($iter) $Enumerable_each_slice$33.$$p = null;;
-      n = $coerce_to(n, $$($nesting, 'Integer'), 'to_int');
+      ;
+      n = $coerce_to(n, $$$('Integer'), 'to_int');
       if ($truthy(n <= 0)) {
-        self.$raise($$($nesting, 'ArgumentError'), "invalid slice size")};
-      if ((block !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["each_slice", n], ($$34 = function(){var self = $$34.$$s == null ? this : $$34.$$s;
+        $Kernel.$raise($$$('ArgumentError'), "invalid slice size")
+      };
+      if (!(block !== nil)) {
+        return $send(self, 'enum_for', ["each_slice", n], function $$22(){var self = $$22.$$s == null ? this : $$22.$$s;
 
           if ($truthy(self['$respond_to?']("size"))) {
             return $rb_divide(self.$size(), n).$ceil()
           } else {
             return nil
-          }}, $$34.$$s = self, $$34.$$arity = 0, $$34))
+          }}, {$$arity: 0, $$s: self})
       };
       
       var slice = []
 
       self.$each.$$p = function() {
-        var param = $$($nesting, 'Opal').$destructure(arguments);
+        var param = $Opal.$destructure(arguments);
 
         slice.push(param);
 
         if (slice.length === n) {
-          Opal.yield1(block, slice);
+          $yield1(block, slice);
           slice = [];
         }
       };
@@ -10032,34 +9912,32 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
 
       // our "last" group, if smaller than n then won't have been yielded
       if (slice.length > 0) {
-        Opal.yield1(block, slice);
+        $yield1(block, slice);
       }
     ;
-      return nil;
-    }, $Enumerable_each_slice$33.$$arity = 1);
+      return self;
+    }, 1);
     
-    Opal.def(self, '$each_with_index', $Enumerable_each_with_index$35 = function $$each_with_index($a) {
-      var $iter = $Enumerable_each_with_index$35.$$p, block = $iter || nil, $post_args, args, $$36, self = this;
+    $def(self, '$each_with_index', function $$each_with_index($a) {
+      var block = $$each_with_index.$$p || nil, $post_args, args, self = this;
 
-      if ($iter) $Enumerable_each_with_index$35.$$p = null;
+      delete $$each_with_index.$$p;
       
+      ;
       
-      if ($iter) $Enumerable_each_with_index$35.$$p = null;;
-      
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
-      if ((block !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["each_with_index"].concat(Opal.to_a(args)), ($$36 = function(){var self = $$36.$$s == null ? this : $$36.$$s;
+      if (!(block !== nil)) {
+        return $send(self, 'enum_for', ["each_with_index"].concat($to_a(args)), function $$23(){var self = $$23.$$s == null ? this : $$23.$$s;
 
-          return self.$enumerator_size()}, $$36.$$s = self, $$36.$$arity = 0, $$36))
+          return self.$enumerator_size()}, {$$arity: 0, $$s: self})
       };
       
       var index = 0;
 
       self.$each.$$p = function() {
-        var param = $$($nesting, 'Opal').$destructure(arguments);
+        var param = $Opal.$destructure(arguments);
 
         block(param, index);
 
@@ -10069,24 +9947,22 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
       self.$each.apply(self, args);
     ;
       return self;
-    }, $Enumerable_each_with_index$35.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$each_with_object', $Enumerable_each_with_object$37 = function $$each_with_object(object) {
-      var $iter = $Enumerable_each_with_object$37.$$p, block = $iter || nil, $$38, self = this;
+    $def(self, '$each_with_object', function $$each_with_object(object) {
+      var block = $$each_with_object.$$p || nil, self = this;
 
-      if ($iter) $Enumerable_each_with_object$37.$$p = null;
+      delete $$each_with_object.$$p;
       
-      
-      if ($iter) $Enumerable_each_with_object$37.$$p = null;;
-      if ((block !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["each_with_object", object], ($$38 = function(){var self = $$38.$$s == null ? this : $$38.$$s;
+      ;
+      if (!(block !== nil)) {
+        return $send(self, 'enum_for', ["each_with_object", object], function $$24(){var self = $$24.$$s == null ? this : $$24.$$s;
 
-          return self.$enumerator_size()}, $$38.$$s = self, $$38.$$arity = 0, $$38))
+          return self.$enumerator_size()}, {$$arity: 0, $$s: self})
       };
       
       self.$each.$$p = function() {
-        var param = $$($nesting, 'Opal').$destructure(arguments);
+        var param = $Opal.$destructure(arguments);
 
         block(param, object);
       };
@@ -10094,65 +9970,60 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
       self.$each();
     ;
       return object;
-    }, $Enumerable_each_with_object$37.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$entries', $Enumerable_entries$39 = function $$entries($a) {
+    $def(self, '$entries', function $$entries($a) {
       var $post_args, args, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
       
       var result = [];
 
       self.$each.$$p = function() {
-        result.push($$($nesting, 'Opal').$destructure(arguments));
+        result.push($Opal.$destructure(arguments));
       };
 
       self.$each.apply(self, args);
 
       return result;
     ;
-    }, $Enumerable_entries$39.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$filter_map', $Enumerable_filter_map$40 = function $$filter_map() {
-      var $iter = $Enumerable_filter_map$40.$$p, block = $iter || nil, $$41, self = this;
+    $def(self, '$filter_map', function $$filter_map() {
+      var block = $$filter_map.$$p || nil, self = this;
 
-      if ($iter) $Enumerable_filter_map$40.$$p = null;
+      delete $$filter_map.$$p;
       
-      
-      if ($iter) $Enumerable_filter_map$40.$$p = null;;
-      if ((block !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["filter_map"], ($$41 = function(){var self = $$41.$$s == null ? this : $$41.$$s;
+      ;
+      if (!(block !== nil)) {
+        return $send(self, 'enum_for', ["filter_map"], function $$25(){var self = $$25.$$s == null ? this : $$25.$$s;
 
-          return self.$enumerator_size()}, $$41.$$s = self, $$41.$$arity = 0, $$41))
+          return self.$enumerator_size()}, {$$arity: 0, $$s: self})
       };
       return $send($send(self, 'map', [], block.$to_proc()), 'select', [], "itself".$to_proc());
-    }, $Enumerable_filter_map$40.$$arity = 0);
-    $alias(self, "find", "detect");
+    }, 0);
     
-    Opal.def(self, '$find_all', $Enumerable_find_all$42 = function $$find_all() {
-      var $iter = $Enumerable_find_all$42.$$p, block = $iter || nil, $$43, self = this;
+    $def(self, '$find_all', function $$find_all() {
+      var block = $$find_all.$$p || nil, self = this;
 
-      if ($iter) $Enumerable_find_all$42.$$p = null;
-      
+      delete $$find_all.$$p;
       
-      if ($iter) $Enumerable_find_all$42.$$p = null;;
-      if ((block !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["find_all"], ($$43 = function(){var self = $$43.$$s == null ? this : $$43.$$s;
+      ;
+      if (!(block !== nil)) {
+        return $send(self, 'enum_for', ["find_all"], function $$26(){var self = $$26.$$s == null ? this : $$26.$$s;
 
-          return self.$enumerator_size()}, $$43.$$s = self, $$43.$$arity = 0, $$43))
+          return self.$enumerator_size()}, {$$arity: 0, $$s: self})
       };
       
       var result = [];
 
       self.$each.$$p = function() {
-        var param = $$($nesting, 'Opal').$destructure(arguments),
-            value = Opal.yield1(block, param);
+        var param = $Opal.$destructure(arguments),
+            value = $yield1(block, param);
 
         if ($truthy(value)) {
           result.push(param);
@@ -10163,20 +10034,19 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
 
       return result;
     ;
-    }, $Enumerable_find_all$42.$$arity = 0);
-    $alias(self, "filter", "find_all");
+    }, 0);
     
-    Opal.def(self, '$find_index', $Enumerable_find_index$44 = function $$find_index(object) {try {
+    $def(self, '$find_index', function $$find_index(object) {try {
 
-      var $iter = $Enumerable_find_index$44.$$p, block = $iter || nil, $$45, $$46, self = this, index = nil;
+      var block = $$find_index.$$p || nil, self = this, index = nil;
 
-      if ($iter) $Enumerable_find_index$44.$$p = null;
+      delete $$find_index.$$p;
       
-      
-      if ($iter) $Enumerable_find_index$44.$$p = null;;
+      ;
       ;
       if ($truthy(object === undefined && block === nil)) {
-        return self.$enum_for("find_index")};
+        return self.$enum_for("find_index")
+      };
       
       if (object != null && block !== nil) {
         self.$warn("warning: given block not used")
@@ -10184,164 +10054,157 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
     ;
       index = 0;
       if ($truthy(object != null)) {
-        $send(self, 'each', [], ($$45 = function($a){var self = $$45.$$s == null ? this : $$45.$$s, $post_args, value;
+        $send(self, 'each', [], function $$27($a){var $post_args, value;
 
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
           value = $post_args;;
-          if ($$($nesting, 'Opal').$destructure(value)['$=='](object)) {
-            Opal.ret(index)};
-          return index += 1;;}, $$45.$$s = self, $$45.$$arity = -1, $$45))
+          if ($eqeq($Opal.$destructure(value), object)) {
+            Opal.ret(index)
+          };
+          return index += 1;;}, -1)
       } else {
-        $send(self, 'each', [], ($$46 = function($a){var self = $$46.$$s == null ? this : $$46.$$s, $post_args, value;
+        $send(self, 'each', [], function $$28($a){var $post_args, value;
 
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
           value = $post_args;;
-          if ($truthy(Opal.yieldX(block, Opal.to_a(value)))) {
-            Opal.ret(index)};
-          return index += 1;;}, $$46.$$s = self, $$46.$$arity = -1, $$46))
+          if ($truthy(Opal.yieldX(block, $to_a(value)))) {
+            Opal.ret(index)
+          };
+          return index += 1;;}, -1)
       };
       return nil;
       } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
-    }, $Enumerable_find_index$44.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$first', $Enumerable_first$47 = function $$first(number) {try {
+    $def(self, '$first', function $$first(number) {try {
 
-      var $$48, $$49, self = this, result = nil, current = nil;
+      var self = this, result = nil, current = nil;
 
       
       ;
       if ($truthy(number === undefined)) {
-        return $send(self, 'each', [], ($$48 = function(value){var self = $$48.$$s == null ? this : $$48.$$s;
-
+        return $send(self, 'each', [], function $$29(value){
           
           
-          if (value == null) {
-            value = nil;
-          };
-          Opal.ret(value);}, $$48.$$s = self, $$48.$$arity = 1, $$48))
+          if (value == null) value = nil;;
+          Opal.ret(value);}, 1)
       } else {
         
         result = [];
-        number = $coerce_to(number, $$($nesting, 'Integer'), 'to_int');
+        number = $coerce_to(number, $$$('Integer'), 'to_int');
         if ($truthy(number < 0)) {
-          self.$raise($$($nesting, 'ArgumentError'), "attempt to take negative size")};
+          $Kernel.$raise($$$('ArgumentError'), "attempt to take negative size")
+        };
         if ($truthy(number == 0)) {
-          return []};
+          return []
+        };
         current = 0;
-        $send(self, 'each', [], ($$49 = function($a){var self = $$49.$$s == null ? this : $$49.$$s, $post_args, args;
+        $send(self, 'each', [], function $$30($a){var $post_args, args;
 
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
           args = $post_args;;
-          result.push($$($nesting, 'Opal').$destructure(args));
+          result.push($Opal.$destructure(args));
           if ($truthy(number <= ++current)) {
             Opal.ret(result)
           } else {
             return nil
-          };}, $$49.$$s = self, $$49.$$arity = -1, $$49));
+          };}, -1);
         return result;
       };
       } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
-    }, $Enumerable_first$47.$$arity = -1);
-    $alias(self, "flat_map", "collect_concat");
+    }, -1);
     
-    Opal.def(self, '$grep', $Enumerable_grep$50 = function $$grep(pattern) {
-      var $iter = $Enumerable_grep$50.$$p, block = $iter || nil, $$51, self = this, result = nil;
+    $def(self, '$grep', function $$grep(pattern) {
+      var block = $$grep.$$p || nil, self = this, result = nil;
 
-      if ($iter) $Enumerable_grep$50.$$p = null;
+      delete $$grep.$$p;
       
-      
-      if ($iter) $Enumerable_grep$50.$$p = null;;
+      ;
       result = [];
-      $send(self, 'each', [], ($$51 = function($a){var self = $$51.$$s == null ? this : $$51.$$s, $post_args, value, cmp = nil;
+      $send(self, 'each', [], function $$31($a){var $post_args, value, cmp = nil;
 
         
         
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
+        $post_args = Opal.slice.call(arguments);
         
         value = $post_args;;
         cmp = comparableForPattern(value);
-        if ($truthy($send(pattern, '__send__', ["==="].concat(Opal.to_a(cmp))))) {
-        } else {
+        if (!$truthy($send(pattern, '__send__', ["==="].concat($to_a(cmp))))) {
           return nil;
         };
         if ((block !== nil)) {
           
           if ($truthy($rb_gt(value.$length(), 1))) {
-            value = [value]};
-          value = Opal.yieldX(block, Opal.to_a(value));
+            value = [value]
+          };
+          value = Opal.yieldX(block, $to_a(value));
         } else if ($truthy($rb_le(value.$length(), 1))) {
-          value = value['$[]'](0)};
-        return result.$push(value);}, $$51.$$s = self, $$51.$$arity = -1, $$51));
+          value = value['$[]'](0)
+        };
+        return result.$push(value);}, -1);
       return result;
-    }, $Enumerable_grep$50.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$grep_v', $Enumerable_grep_v$52 = function $$grep_v(pattern) {
-      var $iter = $Enumerable_grep_v$52.$$p, block = $iter || nil, $$53, self = this, result = nil;
+    $def(self, '$grep_v', function $$grep_v(pattern) {
+      var block = $$grep_v.$$p || nil, self = this, result = nil;
 
-      if ($iter) $Enumerable_grep_v$52.$$p = null;
-      
+      delete $$grep_v.$$p;
       
-      if ($iter) $Enumerable_grep_v$52.$$p = null;;
+      ;
       result = [];
-      $send(self, 'each', [], ($$53 = function($a){var self = $$53.$$s == null ? this : $$53.$$s, $post_args, value, cmp = nil;
+      $send(self, 'each', [], function $$32($a){var $post_args, value, cmp = nil;
 
         
         
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
+        $post_args = Opal.slice.call(arguments);
         
         value = $post_args;;
         cmp = comparableForPattern(value);
-        if ($truthy($send(pattern, '__send__', ["==="].concat(Opal.to_a(cmp))))) {
-          return nil;};
+        if ($truthy($send(pattern, '__send__', ["==="].concat($to_a(cmp))))) {
+          return nil;
+        };
         if ((block !== nil)) {
           
           if ($truthy($rb_gt(value.$length(), 1))) {
-            value = [value]};
-          value = Opal.yieldX(block, Opal.to_a(value));
+            value = [value]
+          };
+          value = Opal.yieldX(block, $to_a(value));
         } else if ($truthy($rb_le(value.$length(), 1))) {
-          value = value['$[]'](0)};
-        return result.$push(value);}, $$53.$$s = self, $$53.$$arity = -1, $$53));
+          value = value['$[]'](0)
+        };
+        return result.$push(value);}, -1);
       return result;
-    }, $Enumerable_grep_v$52.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$group_by', $Enumerable_group_by$54 = function $$group_by() {
-      var $iter = $Enumerable_group_by$54.$$p, block = $iter || nil, $$55, self = this, hash = nil, $ret_or_2 = nil, $writer = nil;
+    $def(self, '$group_by', function $$group_by() {
+      var block = $$group_by.$$p || nil, self = this, hash = nil, $ret_or_1 = nil, $writer = nil;
 
-      if ($iter) $Enumerable_group_by$54.$$p = null;
-      
+      delete $$group_by.$$p;
       
-      if ($iter) $Enumerable_group_by$54.$$p = null;;
-      if ((block !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["group_by"], ($$55 = function(){var self = $$55.$$s == null ? this : $$55.$$s;
+      ;
+      if (!(block !== nil)) {
+        return $send(self, 'enum_for', ["group_by"], function $$33(){var self = $$33.$$s == null ? this : $$33.$$s;
 
-          return self.$enumerator_size()}, $$55.$$s = self, $$55.$$arity = 0, $$55))
+          return self.$enumerator_size()}, {$$arity: 0, $$s: self})
       };
       hash = $hash2([], {});
       
       var result;
 
       self.$each.$$p = function() {
-        var param = $$($nesting, 'Opal').$destructure(arguments),
-            value = Opal.yield1(block, param);
+        var param = $Opal.$destructure(arguments),
+            value = $yield1(block, param);
 
-        (function() {if ($truthy(($ret_or_2 = hash['$[]'](value)))) {
-        return $ret_or_2
-      } else {
-        
-        $writer = [value, []];
-        $send(hash, '[]=', Opal.to_a($writer));
-        return $writer[$rb_minus($writer["length"], 1)];
-      }; return nil; })()['$<<'](param);
+        ($truthy(($ret_or_1 = hash['$[]'](value))) ? ($ret_or_1) : ((($writer = [value, []]), $send(hash, '[]=', $to_a($writer)), $writer[$rb_minus($writer["length"], 1)])))['$<<'](param);
       }
 
       self.$each();
@@ -10351,36 +10214,35 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
       }
     ;
       return hash;
-    }, $Enumerable_group_by$54.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$include?', $Enumerable_include$ques$56 = function(obj) {try {
+    $def(self, '$include?', function $Enumerable_include$ques$34(obj) {try {
 
-      var $$57, self = this;
+      var self = this;
 
       
-      $send(self, 'each', [], ($$57 = function($a){var self = $$57.$$s == null ? this : $$57.$$s, $post_args, args;
+      $send(self, 'each', [], function $$35($a){var $post_args, args;
 
         
         
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
+        $post_args = Opal.slice.call(arguments);
         
         args = $post_args;;
-        if ($$($nesting, 'Opal').$destructure(args)['$=='](obj)) {
+        if ($eqeq($Opal.$destructure(args), obj)) {
           Opal.ret(true)
         } else {
           return nil
-        };}, $$57.$$s = self, $$57.$$arity = -1, $$57));
+        };}, -1);
       return false;
       } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
-    }, $Enumerable_include$ques$56.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$inject', $Enumerable_inject$58 = function $$inject(object, sym) {
-      var $iter = $Enumerable_inject$58.$$p, block = $iter || nil, self = this;
+    $def(self, '$inject', function $$inject(object, sym) {
+      var block = $$inject.$$p || nil, self = this;
 
-      if ($iter) $Enumerable_inject$58.$$p = null;
+      delete $$inject.$$p;
       
-      
-      if ($iter) $Enumerable_inject$58.$$p = null;;
+      ;
       ;
       ;
       
@@ -10388,22 +10250,22 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
 
       if (block !== nil && sym === undefined) {
         self.$each.$$p = function() {
-          var value = $$($nesting, 'Opal').$destructure(arguments);
+          var value = $Opal.$destructure(arguments);
 
           if (result === undefined) {
             result = value;
             return;
           }
 
-          value = Opal.yieldX(block, [result, value]);
+          value = $yieldX(block, [result, value]);
 
           result = value;
         };
       }
       else {
         if (sym === undefined) {
-          if (!$$($nesting, 'Symbol')['$==='](object)) {
-            self.$raise($$($nesting, 'TypeError'), "" + (object.$inspect()) + " is not a Symbol");
+          if (!$$$('Symbol')['$==='](object)) {
+            $Kernel.$raise($$$('TypeError'), "" + (object.$inspect()) + " is not a Symbol");
           }
 
           sym    = object;
@@ -10411,7 +10273,7 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
         }
 
         self.$each.$$p = function() {
-          var value = $$($nesting, 'Opal').$destructure(arguments);
+          var value = $Opal.$destructure(arguments);
 
           if (result === undefined) {
             result = value;
@@ -10426,26 +10288,24 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
 
       return result == undefined ? nil : result;
     ;
-    }, $Enumerable_inject$58.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$lazy', $Enumerable_lazy$59 = function $$lazy() {
-      var $$60, self = this;
+    $def(self, '$lazy', function $$lazy() {
+      var self = this;
 
-      return $send($$$($$($nesting, 'Enumerator'), 'Lazy'), 'new', [self, self.$enumerator_size()], ($$60 = function(enum$, $a){var self = $$60.$$s == null ? this : $$60.$$s, $post_args, args;
+      return $send($$$($$$('Enumerator'), 'Lazy'), 'new', [self, self.$enumerator_size()], function $$36(enum$, $a){var $post_args, args;
 
         
         
-        if (enum$ == null) {
-          enum$ = nil;
-        };
+        if (enum$ == null) enum$ = nil;;
         
-        $post_args = Opal.slice.call(arguments, 1, arguments.length);
+        $post_args = Opal.slice.call(arguments, 1);
         
         args = $post_args;;
-        return $send(enum$, 'yield', Opal.to_a(args));}, $$60.$$s = self, $$60.$$arity = -2, $$60))
-    }, $Enumerable_lazy$59.$$arity = 0);
+        return $send(enum$, 'yield', $to_a(args));}, -2)
+    }, 0);
     
-    Opal.def(self, '$enumerator_size', $Enumerable_enumerator_size$61 = function $$enumerator_size() {
+    $def(self, '$enumerator_size', function $$enumerator_size() {
       var self = this;
 
       if ($truthy(self['$respond_to?']("size"))) {
@@ -10453,23 +10313,21 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
       } else {
         return nil
       }
-    }, $Enumerable_enumerator_size$61.$$arity = 0);
-    $alias(self, "map", "collect");
+    }, 0);
     
-    Opal.def(self, '$max', $Enumerable_max$62 = function $$max(n) {
-      var $iter = $Enumerable_max$62.$$p, block = $iter || nil, self = this;
+    $def(self, '$max', function $$max(n) {
+      var block = $$max.$$p || nil, self = this;
 
-      if ($iter) $Enumerable_max$62.$$p = null;
-      
+      delete $$max.$$p;
       
-      if ($iter) $Enumerable_max$62.$$p = null;;
+      ;
       ;
       
       if (n === undefined || n === nil) {
         var result, value;
 
         self.$each.$$p = function() {
-          var item = $$($nesting, 'Opal').$destructure(arguments);
+          var item = $Opal.$destructure(arguments);
 
           if (result === undefined) {
             result = item;
@@ -10477,13 +10335,13 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
           }
 
           if (block !== nil) {
-            value = Opal.yieldX(block, [item, result]);
+            value = $yieldX(block, [item, result]);
           } else {
             value = (item)['$<=>'](result);
           }
 
           if (value === nil) {
-            self.$raise($$($nesting, 'ArgumentError'), "comparison failed");
+            $Kernel.$raise($$$('ArgumentError'), "comparison failed");
           }
 
           if (value > 0) {
@@ -10500,30 +10358,25 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
         }
       }
 
-      n = $coerce_to(n, $$($nesting, 'Integer'), 'to_int');
+      n = $coerce_to(n, $$$('Integer'), 'to_int');
     ;
       return $send(self, 'sort', [], block.$to_proc()).$reverse().$first(n);
-    }, $Enumerable_max$62.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$max_by', $Enumerable_max_by$63 = function $$max_by(n) {
-      var $iter = $Enumerable_max_by$63.$$p, block = $iter || nil, $$64, self = this;
+    $def(self, '$max_by', function $$max_by(n) {
+      var block = $$max_by.$$p || nil, self = this;
 
-      if ($iter) $Enumerable_max_by$63.$$p = null;
-      
+      delete $$max_by.$$p;
       
-      if ($iter) $Enumerable_max_by$63.$$p = null;;
+      ;
       
-      if (n == null) {
-        n = nil;
-      };
-      if ($truthy(block)) {
-      } else {
-        return $send(self, 'enum_for', ["max_by", n], ($$64 = function(){var self = $$64.$$s == null ? this : $$64.$$s;
+      if (n == null) n = nil;;
+      if (!$truthy(block)) {
+        return $send(self, 'enum_for', ["max_by", n], function $$37(){var self = $$37.$$s == null ? this : $$37.$$s;
 
-          return self.$enumerator_size()}, $$64.$$s = self, $$64.$$arity = 0, $$64))
+          return self.$enumerator_size()}, {$$arity: 0, $$s: self})
       };
-      if ($truthy(n['$nil?']())) {
-      } else {
+      if (!$truthy(n['$nil?']())) {
         return $send(self, 'sort_by', [], block.$to_proc()).$reverse().$take(n)
       };
       
@@ -10531,8 +10384,8 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
           by;
 
       self.$each.$$p = function() {
-        var param = $$($nesting, 'Opal').$destructure(arguments),
-            value = Opal.yield1(block, param);
+        var param = $Opal.$destructure(arguments),
+            value = $yield1(block, param);
 
         if (result === undefined) {
           result = param;
@@ -10550,43 +10403,35 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
 
       return result === undefined ? nil : result;
     ;
-    }, $Enumerable_max_by$63.$$arity = -1);
-    $alias(self, "member?", "include?");
+    }, -1);
     
-    Opal.def(self, '$min', $Enumerable_min$65 = function $$min(n) {
-      var $iter = $Enumerable_min$65.$$p, block = $iter || nil, $$66, self = this;
+    $def(self, '$min', function $$min(n) {
+      var block = $$min.$$p || nil, self = this;
 
-      if ($iter) $Enumerable_min$65.$$p = null;
+      delete $$min.$$p;
       
+      ;
       
-      if ($iter) $Enumerable_min$65.$$p = null;;
-      
-      if (n == null) {
-        n = nil;
-      };
-      if ($truthy(n['$nil?']())) {
-      } else if ((block !== nil)) {
-        return $send(self, 'sort', [], ($$66 = function(a, b){var self = $$66.$$s == null ? this : $$66.$$s;
-
-          
-          
-          if (a == null) {
-            a = nil;
-          };
-          
-          if (b == null) {
-            b = nil;
-          };
-          return Opal.yieldX(block, [a, b]);;}, $$66.$$s = self, $$66.$$arity = 2, $$66)).$take(n)
-      } else {
-        return self.$sort().$take(n)
+      if (n == null) n = nil;;
+      if (!$truthy(n['$nil?']())) {
+        if ((block !== nil)) {
+          return $send(self, 'sort', [], function $$38(a, b){
+            
+            
+            if (a == null) a = nil;;
+            
+            if (b == null) b = nil;;
+            return Opal.yieldX(block, [a, b]);;}, 2).$take(n)
+        } else {
+          return self.$sort().$take(n)
+        }
       };
       
       var result;
 
       if (block !== nil) {
         self.$each.$$p = function() {
-          var param = $$($nesting, 'Opal').$destructure(arguments);
+          var param = $Opal.$destructure(arguments);
 
           if (result === undefined) {
             result = param;
@@ -10596,7 +10441,7 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
           var value = block(param, result);
 
           if (value === nil) {
-            self.$raise($$($nesting, 'ArgumentError'), "comparison failed");
+            $Kernel.$raise($$$('ArgumentError'), "comparison failed");
           }
 
           if (value < 0) {
@@ -10606,14 +10451,14 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
       }
       else {
         self.$each.$$p = function() {
-          var param = $$($nesting, 'Opal').$destructure(arguments);
+          var param = $Opal.$destructure(arguments);
 
           if (result === undefined) {
             result = param;
             return;
           }
 
-          if ($$($nesting, 'Opal').$compare(param, result) < 0) {
+          if ($Opal.$compare(param, result) < 0) {
             result = param;
           }
         };
@@ -10623,27 +10468,22 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
 
       return result === undefined ? nil : result;
     ;
-    }, $Enumerable_min$65.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$min_by', $Enumerable_min_by$67 = function $$min_by(n) {
-      var $iter = $Enumerable_min_by$67.$$p, block = $iter || nil, $$68, self = this;
+    $def(self, '$min_by', function $$min_by(n) {
+      var block = $$min_by.$$p || nil, self = this;
 
-      if ($iter) $Enumerable_min_by$67.$$p = null;
-      
+      delete $$min_by.$$p;
       
-      if ($iter) $Enumerable_min_by$67.$$p = null;;
+      ;
       
-      if (n == null) {
-        n = nil;
-      };
-      if ($truthy(block)) {
-      } else {
-        return $send(self, 'enum_for', ["min_by", n], ($$68 = function(){var self = $$68.$$s == null ? this : $$68.$$s;
+      if (n == null) n = nil;;
+      if (!$truthy(block)) {
+        return $send(self, 'enum_for', ["min_by", n], function $$39(){var self = $$39.$$s == null ? this : $$39.$$s;
 
-          return self.$enumerator_size()}, $$68.$$s = self, $$68.$$arity = 0, $$68))
+          return self.$enumerator_size()}, {$$arity: 0, $$s: self})
       };
-      if ($truthy(n['$nil?']())) {
-      } else {
+      if (!$truthy(n['$nil?']())) {
         return $send(self, 'sort_by', [], block.$to_proc()).$take(n)
       };
       
@@ -10651,8 +10491,8 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
           by;
 
       self.$each.$$p = function() {
-        var param = $$($nesting, 'Opal').$destructure(arguments),
-            value = Opal.yield1(block, param);
+        var param = $Opal.$destructure(arguments),
+            value = $yield1(block, param);
 
         if (result === undefined) {
           result = param;
@@ -10670,36 +10510,26 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
 
       return result === undefined ? nil : result;
     ;
-    }, $Enumerable_min_by$67.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$minmax', $Enumerable_minmax$69 = function $$minmax() {
-      var $iter = $Enumerable_minmax$69.$$p, block = $iter || nil, $$70, self = this, $ret_or_3 = nil;
+    $def(self, '$minmax', function $$minmax() {
+      var block = $$minmax.$$p || nil, self = this, $ret_or_1 = nil;
 
-      if ($iter) $Enumerable_minmax$69.$$p = null;
-      
+      delete $$minmax.$$p;
       
-      if ($iter) $Enumerable_minmax$69.$$p = null;;
-      block = (function() {if ($truthy(($ret_or_3 = block))) {
-        return $ret_or_3
-      } else {
-        return $send(self, 'proc', [], ($$70 = function(a, b){var self = $$70.$$s == null ? this : $$70.$$s;
-
-          
-          
-          if (a == null) {
-            a = nil;
-          };
-          
-          if (b == null) {
-            b = nil;
-          };
-          return a['$<=>'](b);}, $$70.$$s = self, $$70.$$arity = 2, $$70))
-      }; return nil; })();
+      ;
+      block = ($truthy(($ret_or_1 = block)) ? ($ret_or_1) : ($send($Kernel, 'proc', [], function $$40(a, b){
+        
+        
+        if (a == null) a = nil;;
+        
+        if (b == null) b = nil;;
+        return a['$<=>'](b);}, 2)));
       
       var min = nil, max = nil, first_time = true;
 
       self.$each.$$p = function() {
-        var element = $$($nesting, 'Opal').$destructure(arguments);
+        var element = $Opal.$destructure(arguments);
         if (first_time) {
           min = max = element;
           first_time = false;
@@ -10707,7 +10537,7 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
           var min_cmp = block.$call(min, element);
 
           if (min_cmp === nil) {
-            self.$raise($$($nesting, 'ArgumentError'), "comparison failed")
+            $Kernel.$raise($$$('ArgumentError'), "comparison failed")
           } else if (min_cmp > 0) {
             min = element;
           }
@@ -10715,7 +10545,7 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
           var max_cmp = block.$call(max, element);
 
           if (max_cmp === nil) {
-            self.$raise($$($nesting, 'ArgumentError'), "comparison failed")
+            $Kernel.$raise($$$('ArgumentError'), "comparison failed")
           } else if (max_cmp < 0) {
             max = element;
           }
@@ -10726,20 +10556,18 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
 
       return [min, max];
     ;
-    }, $Enumerable_minmax$69.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$minmax_by', $Enumerable_minmax_by$71 = function $$minmax_by() {
-      var $iter = $Enumerable_minmax_by$71.$$p, block = $iter || nil, $$72, self = this;
+    $def(self, '$minmax_by', function $$minmax_by() {
+      var block = $$minmax_by.$$p || nil, self = this;
 
-      if ($iter) $Enumerable_minmax_by$71.$$p = null;
-      
+      delete $$minmax_by.$$p;
       
-      if ($iter) $Enumerable_minmax_by$71.$$p = null;;
-      if ($truthy(block)) {
-      } else {
-        return $send(self, 'enum_for', ["minmax_by"], ($$72 = function(){var self = $$72.$$s == null ? this : $$72.$$s;
+      ;
+      if (!$truthy(block)) {
+        return $send(self, 'enum_for', ["minmax_by"], function $$41(){var self = $$41.$$s == null ? this : $$41.$$s;
 
-          return self.$enumerator_size()}, $$72.$$s = self, $$72.$$arity = 0, $$72))
+          return self.$enumerator_size()}, {$$arity: 0, $$s: self})
       };
       
       var min_result = nil,
@@ -10748,8 +10576,8 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
           max_by;
 
       self.$each.$$p = function() {
-        var param = $$($nesting, 'Opal').$destructure(arguments),
-            value = Opal.yield1(block, param);
+        var param = $Opal.$destructure(arguments),
+            value = $yield1(block, param);
 
         if ((min_by === undefined) || (value)['$<=>'](min_by) < 0) {
           min_result = param;
@@ -10766,83 +10594,81 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
 
       return [min_result, max_result];
     ;
-    }, $Enumerable_minmax_by$71.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$none?', $Enumerable_none$ques$73 = function(pattern) {try {
+    $def(self, '$none?', function $Enumerable_none$ques$42(pattern) {try {
 
-      var $iter = $Enumerable_none$ques$73.$$p, block = $iter || nil, $$74, $$75, $$76, self = this;
+      var block = $Enumerable_none$ques$42.$$p || nil, self = this;
 
-      if ($iter) $Enumerable_none$ques$73.$$p = null;
-      
+      delete $Enumerable_none$ques$42.$$p;
       
-      if ($iter) $Enumerable_none$ques$73.$$p = null;;
+      ;
       ;
       if ($truthy(pattern !== undefined)) {
-        $send(self, 'each', [], ($$74 = function($a){var self = $$74.$$s == null ? this : $$74.$$s, $post_args, value, comparable = nil;
+        $send(self, 'each', [], function $$43($a){var $post_args, value, comparable = nil;
 
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
           value = $post_args;;
           comparable = comparableForPattern(value);
-          if ($truthy($send(pattern, 'public_send', ["==="].concat(Opal.to_a(comparable))))) {
+          if ($truthy($send(pattern, 'public_send', ["==="].concat($to_a(comparable))))) {
             Opal.ret(false)
           } else {
             return nil
-          };}, $$74.$$s = self, $$74.$$arity = -1, $$74))
+          };}, -1)
       } else if ((block !== nil)) {
-        $send(self, 'each', [], ($$75 = function($a){var self = $$75.$$s == null ? this : $$75.$$s, $post_args, value;
+        $send(self, 'each', [], function $$44($a){var $post_args, value;
 
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
           value = $post_args;;
-          if ($truthy(Opal.yieldX(block, Opal.to_a(value)))) {
+          if ($truthy(Opal.yieldX(block, $to_a(value)))) {
             Opal.ret(false)
           } else {
             return nil
-          };}, $$75.$$s = self, $$75.$$arity = -1, $$75))
+          };}, -1)
       } else {
-        $send(self, 'each', [], ($$76 = function($a){var self = $$76.$$s == null ? this : $$76.$$s, $post_args, value, item = nil;
+        $send(self, 'each', [], function $$45($a){var $post_args, value, item = nil;
 
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
           value = $post_args;;
-          item = $$($nesting, 'Opal').$destructure(value);
+          item = $Opal.$destructure(value);
           if ($truthy(item)) {
             Opal.ret(false)
           } else {
             return nil
-          };}, $$76.$$s = self, $$76.$$arity = -1, $$76))
+          };}, -1)
       };
       return true;
       } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
-    }, $Enumerable_none$ques$73.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$one?', $Enumerable_one$ques$77 = function(pattern) {try {
+    $def(self, '$one?', function $Enumerable_one$ques$46(pattern) {try {
 
-      var $iter = $Enumerable_one$ques$77.$$p, block = $iter || nil, $$78, $$79, $$80, self = this, count = nil;
+      var block = $Enumerable_one$ques$46.$$p || nil, self = this, count = nil;
 
-      if ($iter) $Enumerable_one$ques$77.$$p = null;
-      
+      delete $Enumerable_one$ques$46.$$p;
       
-      if ($iter) $Enumerable_one$ques$77.$$p = null;;
+      ;
       ;
       count = 0;
       if ($truthy(pattern !== undefined)) {
-        $send(self, 'each', [], ($$78 = function($a){var self = $$78.$$s == null ? this : $$78.$$s, $post_args, value, comparable = nil;
+        $send(self, 'each', [], function $$47($a){var $post_args, value, comparable = nil;
 
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
           value = $post_args;;
           comparable = comparableForPattern(value);
-          if ($truthy($send(pattern, 'public_send', ["==="].concat(Opal.to_a(comparable))))) {
+          if ($truthy($send(pattern, 'public_send', ["==="].concat($to_a(comparable))))) {
             
             count = $rb_plus(count, 1);
             if ($truthy($rb_gt(count, 1))) {
@@ -10852,17 +10678,16 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
             };
           } else {
             return nil
-          };}, $$78.$$s = self, $$78.$$arity = -1, $$78))
+          };}, -1)
       } else if ((block !== nil)) {
-        $send(self, 'each', [], ($$79 = function($a){var self = $$79.$$s == null ? this : $$79.$$s, $post_args, value;
+        $send(self, 'each', [], function $$48($a){var $post_args, value;
 
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
           value = $post_args;;
-          if ($truthy(Opal.yieldX(block, Opal.to_a(value)))) {
-          } else {
+          if (!$truthy(Opal.yieldX(block, $to_a(value)))) {
             return nil;
           };
           count = $rb_plus(count, 1);
@@ -10870,17 +10695,16 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
             Opal.ret(false)
           } else {
             return nil
-          };}, $$79.$$s = self, $$79.$$arity = -1, $$79))
+          };}, -1)
       } else {
-        $send(self, 'each', [], ($$80 = function($a){var self = $$80.$$s == null ? this : $$80.$$s, $post_args, value;
+        $send(self, 'each', [], function $$49($a){var $post_args, value;
 
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
           value = $post_args;;
-          if ($truthy($$($nesting, 'Opal').$destructure(value))) {
-          } else {
+          if (!$truthy($Opal.$destructure(value))) {
             return nil;
           };
           count = $rb_plus(count, 1);
@@ -10888,31 +10712,29 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
             Opal.ret(false)
           } else {
             return nil
-          };}, $$80.$$s = self, $$80.$$arity = -1, $$80))
+          };}, -1)
       };
       return count['$=='](1);
       } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
-    }, $Enumerable_one$ques$77.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$partition', $Enumerable_partition$81 = function $$partition() {
-      var $iter = $Enumerable_partition$81.$$p, block = $iter || nil, $$82, self = this;
+    $def(self, '$partition', function $$partition() {
+      var block = $$partition.$$p || nil, self = this;
 
-      if ($iter) $Enumerable_partition$81.$$p = null;
-      
+      delete $$partition.$$p;
       
-      if ($iter) $Enumerable_partition$81.$$p = null;;
-      if ((block !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["partition"], ($$82 = function(){var self = $$82.$$s == null ? this : $$82.$$s;
+      ;
+      if (!(block !== nil)) {
+        return $send(self, 'enum_for', ["partition"], function $$50(){var self = $$50.$$s == null ? this : $$50.$$s;
 
-          return self.$enumerator_size()}, $$82.$$s = self, $$82.$$arity = 0, $$82))
+          return self.$enumerator_size()}, {$$arity: 0, $$s: self})
       };
       
       var truthy = [], falsy = [], result;
 
       self.$each.$$p = function() {
-        var param = $$($nesting, 'Opal').$destructure(arguments),
-            value = Opal.yield1(block, param);
+        var param = $Opal.$destructure(arguments),
+            value = $yield1(block, param);
 
         if ($truthy(value)) {
           truthy.push(param);
@@ -10926,30 +10748,27 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
 
       return [truthy, falsy];
     ;
-    }, $Enumerable_partition$81.$$arity = 0);
-    $alias(self, "reduce", "inject");
+    }, 0);
     
-    Opal.def(self, '$reject', $Enumerable_reject$83 = function $$reject() {
-      var $iter = $Enumerable_reject$83.$$p, block = $iter || nil, $$84, self = this;
+    $def(self, '$reject', function $$reject() {
+      var block = $$reject.$$p || nil, self = this;
 
-      if ($iter) $Enumerable_reject$83.$$p = null;
+      delete $$reject.$$p;
       
-      
-      if ($iter) $Enumerable_reject$83.$$p = null;;
-      if ((block !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["reject"], ($$84 = function(){var self = $$84.$$s == null ? this : $$84.$$s;
+      ;
+      if (!(block !== nil)) {
+        return $send(self, 'enum_for', ["reject"], function $$51(){var self = $$51.$$s == null ? this : $$51.$$s;
 
-          return self.$enumerator_size()}, $$84.$$s = self, $$84.$$arity = 0, $$84))
+          return self.$enumerator_size()}, {$$arity: 0, $$s: self})
       };
       
       var result = [];
 
       self.$each.$$p = function() {
-        var param = $$($nesting, 'Opal').$destructure(arguments),
-            value = Opal.yield1(block, param);
+        var param = $Opal.$destructure(arguments),
+            value = $yield1(block, param);
 
-        if ($falsy(value)) {
+        if (!$truthy(value)) {
           result.push(param);
         }
       };
@@ -10958,20 +10777,18 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
 
       return result;
     ;
-    }, $Enumerable_reject$83.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$reverse_each', $Enumerable_reverse_each$85 = function $$reverse_each() {
-      var $iter = $Enumerable_reverse_each$85.$$p, block = $iter || nil, $$86, self = this;
+    $def(self, '$reverse_each', function $$reverse_each() {
+      var block = $$reverse_each.$$p || nil, self = this;
 
-      if ($iter) $Enumerable_reverse_each$85.$$p = null;
+      delete $$reverse_each.$$p;
       
-      
-      if ($iter) $Enumerable_reverse_each$85.$$p = null;;
-      if ((block !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["reverse_each"], ($$86 = function(){var self = $$86.$$s == null ? this : $$86.$$s;
+      ;
+      if (!(block !== nil)) {
+        return $send(self, 'enum_for', ["reverse_each"], function $$52(){var self = $$52.$$s == null ? this : $$52.$$s;
 
-          return self.$enumerator_size()}, $$86.$$s = self, $$86.$$arity = 0, $$86))
+          return self.$enumerator_size()}, {$$arity: 0, $$s: self})
       };
       
       var result = [];
@@ -10983,41 +10800,39 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
       self.$each();
 
       for (var i = result.length - 1; i >= 0; i--) {
-        Opal.yieldX(block, result[i]);
+        $yieldX(block, result[i]);
       }
 
       return result;
     ;
-    }, $Enumerable_reverse_each$85.$$arity = 0);
-    $alias(self, "select", "find_all");
+    }, 0);
     
-    Opal.def(self, '$slice_before', $Enumerable_slice_before$87 = function $$slice_before(pattern) {
-      var $iter = $Enumerable_slice_before$87.$$p, block = $iter || nil, $$88, self = this;
+    $def(self, '$slice_before', function $$slice_before(pattern) {
+      var block = $$slice_before.$$p || nil, self = this;
 
-      if ($iter) $Enumerable_slice_before$87.$$p = null;
-      
+      delete $$slice_before.$$p;
       
-      if ($iter) $Enumerable_slice_before$87.$$p = null;;
+      ;
       ;
       if ($truthy(pattern === undefined && block === nil)) {
-        self.$raise($$($nesting, 'ArgumentError'), "both pattern and block are given")};
+        $Kernel.$raise($$$('ArgumentError'), "both pattern and block are given")
+      };
       if ($truthy(pattern !== undefined && block !== nil || arguments.length > 1)) {
-        self.$raise($$($nesting, 'ArgumentError'), "" + "wrong number of arguments (" + (arguments.length) + " expected 1)")};
-      return $send($$($nesting, 'Enumerator'), 'new', [], ($$88 = function(e){var self = $$88.$$s == null ? this : $$88.$$s;
+        $Kernel.$raise($$$('ArgumentError'), "wrong number of arguments (" + (arguments.length) + " expected 1)")
+      };
+      return $send($$$('Enumerator'), 'new', [], function $$53(e){var self = $$53.$$s == null ? this : $$53.$$s;
 
         
         
-        if (e == null) {
-          e = nil;
-        };
+        if (e == null) e = nil;;
         
         var slice = [];
 
         if (block !== nil) {
           if (pattern === undefined) {
             self.$each.$$p = function() {
-              var param = $$($nesting, 'Opal').$destructure(arguments),
-                  value = Opal.yield1(block, param);
+              var param = $Opal.$destructure(arguments),
+                  value = $yield1(block, param);
 
               if ($truthy(value) && slice.length > 0) {
                 e['$<<'](slice);
@@ -11029,7 +10844,7 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
           }
           else {
             self.$each.$$p = function() {
-              var param = $$($nesting, 'Opal').$destructure(arguments),
+              var param = $Opal.$destructure(arguments),
                   value = block(param, pattern.$dup());
 
               if ($truthy(value) && slice.length > 0) {
@@ -11043,7 +10858,7 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
         }
         else {
           self.$each.$$p = function() {
-            var param = $$($nesting, 'Opal').$destructure(arguments),
+            var param = $Opal.$destructure(arguments),
                 value = pattern['$==='](param);
 
             if ($truthy(value) && slice.length > 0) {
@@ -11060,43 +10875,40 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
         if (slice.length > 0) {
           e['$<<'](slice);
         }
-      ;}, $$88.$$s = self, $$88.$$arity = 1, $$88));
-    }, $Enumerable_slice_before$87.$$arity = -1);
+      ;}, {$$arity: 1, $$s: self});
+    }, -1);
     
-    Opal.def(self, '$slice_after', $Enumerable_slice_after$89 = function $$slice_after(pattern) {
-      var $iter = $Enumerable_slice_after$89.$$p, block = $iter || nil, $$90, $$91, self = this;
+    $def(self, '$slice_after', function $$slice_after(pattern) {
+      var block = $$slice_after.$$p || nil, self = this;
 
-      if ($iter) $Enumerable_slice_after$89.$$p = null;
+      delete $$slice_after.$$p;
       
-      
-      if ($iter) $Enumerable_slice_after$89.$$p = null;;
+      ;
       ;
       if ($truthy(pattern === undefined && block === nil)) {
-        self.$raise($$($nesting, 'ArgumentError'), "both pattern and block are given")};
+        $Kernel.$raise($$$('ArgumentError'), "both pattern and block are given")
+      };
       if ($truthy(pattern !== undefined && block !== nil || arguments.length > 1)) {
-        self.$raise($$($nesting, 'ArgumentError'), "" + "wrong number of arguments (" + (arguments.length) + " expected 1)")};
+        $Kernel.$raise($$$('ArgumentError'), "wrong number of arguments (" + (arguments.length) + " expected 1)")
+      };
       if ($truthy(pattern !== undefined)) {
-        block = $send(self, 'proc', [], ($$90 = function(e){var self = $$90.$$s == null ? this : $$90.$$s;
-
+        block = $send($Kernel, 'proc', [], function $$54(e){
           
           
-          if (e == null) {
-            e = nil;
-          };
-          return pattern['$==='](e);}, $$90.$$s = self, $$90.$$arity = 1, $$90))};
-      return $send($$($nesting, 'Enumerator'), 'new', [], ($$91 = function(yielder){var self = $$91.$$s == null ? this : $$91.$$s;
+          if (e == null) e = nil;;
+          return pattern['$==='](e);}, 1)
+      };
+      return $send($$$('Enumerator'), 'new', [], function $$55(yielder){var self = $$55.$$s == null ? this : $$55.$$s;
 
         
         
-        if (yielder == null) {
-          yielder = nil;
-        };
+        if (yielder == null) yielder = nil;;
         
         var accumulate;
 
         self.$each.$$p = function() {
-          var element = $$($nesting, 'Opal').$destructure(arguments),
-              end_chunk = Opal.yield1(block, element);
+          var element = $Opal.$destructure(arguments),
+              end_chunk = $yield1(block, element);
 
           if (accumulate == null) {
             accumulate = [];
@@ -11116,35 +10928,31 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
         if (accumulate != null) {
           yielder.$yield(accumulate);
         }
-      ;}, $$91.$$s = self, $$91.$$arity = 1, $$91));
-    }, $Enumerable_slice_after$89.$$arity = -1);
+      ;}, {$$arity: 1, $$s: self});
+    }, -1);
     
-    Opal.def(self, '$slice_when', $Enumerable_slice_when$92 = function $$slice_when() {
-      var $iter = $Enumerable_slice_when$92.$$p, block = $iter || nil, $$93, self = this;
+    $def(self, '$slice_when', function $$slice_when() {
+      var block = $$slice_when.$$p || nil, self = this;
 
-      if ($iter) $Enumerable_slice_when$92.$$p = null;
+      delete $$slice_when.$$p;
       
-      
-      if ($iter) $Enumerable_slice_when$92.$$p = null;;
-      if ((block !== nil)) {
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "wrong number of arguments (0 for 1)")
+      ;
+      if (!(block !== nil)) {
+        $Kernel.$raise($$$('ArgumentError'), "wrong number of arguments (0 for 1)")
       };
-      return $send($$($nesting, 'Enumerator'), 'new', [], ($$93 = function(yielder){var self = $$93.$$s == null ? this : $$93.$$s;
+      return $send($$$('Enumerator'), 'new', [], function $$56(yielder){var self = $$56.$$s == null ? this : $$56.$$s;
 
         
         
-        if (yielder == null) {
-          yielder = nil;
-        };
+        if (yielder == null) yielder = nil;;
         
         var slice = nil, last_after = nil;
 
         self.$each_cons.$$p = function() {
-          var params = $$($nesting, 'Opal').$destructure(arguments),
+          var params = $Opal.$destructure(arguments),
               before = params[0],
               after = params[1],
-              match = Opal.yieldX(block, [before, after]);
+              match = $yieldX(block, [before, after]);
 
           last_after = after;
 
@@ -11167,199 +10975,194 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
           slice.push(last_after);
           yielder.$yield(slice);
         }
-      ;}, $$93.$$s = self, $$93.$$arity = 1, $$93));
-    }, $Enumerable_slice_when$92.$$arity = 0);
+      ;}, {$$arity: 1, $$s: self});
+    }, 0);
     
-    Opal.def(self, '$sort', $Enumerable_sort$94 = function $$sort() {
-      var $iter = $Enumerable_sort$94.$$p, block = $iter || nil, $$95, self = this, ary = nil;
+    $def(self, '$sort', function $$sort() {
+      var block = $$sort.$$p || nil, self = this, ary = nil;
 
-      if ($iter) $Enumerable_sort$94.$$p = null;
-      
+      delete $$sort.$$p;
       
-      if ($iter) $Enumerable_sort$94.$$p = null;;
+      ;
       ary = self.$to_a();
-      if ((block !== nil)) {
-      } else {
-        block = $lambda(($$95 = function(a, b){var self = $$95.$$s == null ? this : $$95.$$s;
-
+      if (!(block !== nil)) {
+        block = $lambda(function $$57(a, b){
           
           
-          if (a == null) {
-            a = nil;
-          };
+          if (a == null) a = nil;;
           
-          if (b == null) {
-            b = nil;
-          };
-          return a['$<=>'](b);}, $$95.$$s = self, $$95.$$arity = 2, $$95))
+          if (b == null) b = nil;;
+          return a['$<=>'](b);}, 2)
       };
       return $send(ary, 'sort', [], block.$to_proc());
-    }, $Enumerable_sort$94.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$sort_by', $Enumerable_sort_by$96 = function $$sort_by() {
-      var $iter = $Enumerable_sort_by$96.$$p, block = $iter || nil, $$97, $$98, $$99, $$100, self = this, dup = nil;
+    $def(self, '$sort_by', function $$sort_by() {
+      var block = $$sort_by.$$p || nil, self = this, dup = nil;
 
-      if ($iter) $Enumerable_sort_by$96.$$p = null;
+      delete $$sort_by.$$p;
       
-      
-      if ($iter) $Enumerable_sort_by$96.$$p = null;;
-      if ((block !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["sort_by"], ($$97 = function(){var self = $$97.$$s == null ? this : $$97.$$s;
+      ;
+      if (!(block !== nil)) {
+        return $send(self, 'enum_for', ["sort_by"], function $$58(){var self = $$58.$$s == null ? this : $$58.$$s;
 
-          return self.$enumerator_size()}, $$97.$$s = self, $$97.$$arity = 0, $$97))
+          return self.$enumerator_size()}, {$$arity: 0, $$s: self})
       };
-      dup = $send(self, 'map', [], ($$98 = function(){var self = $$98.$$s == null ? this : $$98.$$s, arg = nil;
+      dup = $send(self, 'map', [], function $$59(){var arg = nil;
 
         
-        arg = $$($nesting, 'Opal').$destructure(arguments);
-        return [Opal.yield1(block, arg), arg];}, $$98.$$s = self, $$98.$$arity = 0, $$98));
-      $send(dup, 'sort!', [], ($$99 = function(a, b){var self = $$99.$$s == null ? this : $$99.$$s;
-
+        arg = $Opal.$destructure(arguments);
+        return [Opal.yield1(block, arg), arg];}, 0);
+      $send(dup, 'sort!', [], function $$60(a, b){
         
         
-        if (a == null) {
-          a = nil;
-        };
+        if (a == null) a = nil;;
         
-        if (b == null) {
-          b = nil;
-        };
-        return (a[0])['$<=>'](b[0]);}, $$99.$$s = self, $$99.$$arity = 2, $$99));
-      return $send(dup, 'map!', [], ($$100 = function(i){var self = $$100.$$s == null ? this : $$100.$$s;
-
+        if (b == null) b = nil;;
+        return (a[0])['$<=>'](b[0]);}, 2);
+      return $send(dup, 'map!', [], function $$61(i){
         
         
-        if (i == null) {
-          i = nil;
-        };
-        return i[1];;}, $$100.$$s = self, $$100.$$arity = 1, $$100));
-    }, $Enumerable_sort_by$96.$$arity = 0);
+        if (i == null) i = nil;;
+        return i[1];;}, 1);
+    }, 0);
     
-    Opal.def(self, '$sum', $Enumerable_sum$101 = function $$sum(initial) {
-      var $$102, $iter = $Enumerable_sum$101.$$p, $yield = $iter || nil, self = this, result = nil;
+    $def(self, '$sum', function $$sum(initial) {
+      var $yield = $$sum.$$p || nil, self = this, result = nil, compensation = nil;
 
-      if ($iter) $Enumerable_sum$101.$$p = null;
+      delete $$sum.$$p;
       
       
-      if (initial == null) {
-        initial = 0;
-      };
+      if (initial == null) initial = 0;;
       result = initial;
-      $send(self, 'each', [], ($$102 = function($a){var self = $$102.$$s == null ? this : $$102.$$s, $post_args, args, item = nil;
+      compensation = 0;
+      $send(self, 'each', [], function $$62($a){var $post_args, args, item = nil, y = nil, t = nil;
 
         
         
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
+        $post_args = Opal.slice.call(arguments);
         
         args = $post_args;;
-        item = (function() {if (($yield !== nil)) {
-          return Opal.yieldX($yield, Opal.to_a(args));
+        item = (($yield !== nil) ? (Opal.yieldX($yield, $to_a(args))) : ($Opal.$destructure(args)));
+        if (($not([$$$($$$('Float'), 'INFINITY'), $$$($$$('Float'), 'INFINITY')['$-@']()]['$include?'](item)) && ($truthy(item['$respond_to?']("-"))))) {
+          
+          y = $rb_minus(item, compensation);
+          t = $rb_plus(result, y);
+          compensation = $rb_minus($rb_minus(t, result), y);
+          return (result = t);
         } else {
-          return $$($nesting, 'Opal').$destructure(args)
-        }; return nil; })();
-        return (result = $rb_plus(result, item));}, $$102.$$s = self, $$102.$$arity = -1, $$102));
+          return (result = $rb_plus(result, item))
+        };}, -1);
       return result;
-    }, $Enumerable_sum$101.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$take', $Enumerable_take$103 = function $$take(num) {
+    $def(self, '$take', function $$take(num) {
       var self = this;
 
       return self.$first(num)
-    }, $Enumerable_take$103.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$take_while', $Enumerable_take_while$104 = function $$take_while() {try {
+    $def(self, '$take_while', function $$take_while() {try {
 
-      var $iter = $Enumerable_take_while$104.$$p, block = $iter || nil, $$105, self = this, result = nil;
+      var block = $$take_while.$$p || nil, self = this, result = nil;
 
-      if ($iter) $Enumerable_take_while$104.$$p = null;
+      delete $$take_while.$$p;
       
-      
-      if ($iter) $Enumerable_take_while$104.$$p = null;;
-      if ($truthy(block)) {
-      } else {
+      ;
+      if (!$truthy(block)) {
         return self.$enum_for("take_while")
       };
       result = [];
-      return $send(self, 'each', [], ($$105 = function($a){var self = $$105.$$s == null ? this : $$105.$$s, $post_args, args, value = nil;
+      return $send(self, 'each', [], function $$63($a){var $post_args, args, value = nil;
 
         
         
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
+        $post_args = Opal.slice.call(arguments);
         
         args = $post_args;;
-        value = $$($nesting, 'Opal').$destructure(args);
-        if ($truthy(Opal.yield1(block, value))) {
-        } else {
+        value = $Opal.$destructure(args);
+        if (!$truthy(Opal.yield1(block, value))) {
           Opal.ret(result)
         };
-        return result.push(value);;}, $$105.$$s = self, $$105.$$arity = -1, $$105));
+        return result.push(value);;}, -1);
       } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
-    }, $Enumerable_take_while$104.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$uniq', $Enumerable_uniq$106 = function $$uniq() {
-      var $iter = $Enumerable_uniq$106.$$p, block = $iter || nil, $$107, self = this, hash = nil;
+    $def(self, '$uniq', function $$uniq() {
+      var block = $$uniq.$$p || nil, self = this, hash = nil;
 
-      if ($iter) $Enumerable_uniq$106.$$p = null;
+      delete $$uniq.$$p;
       
-      
-      if ($iter) $Enumerable_uniq$106.$$p = null;;
+      ;
       hash = $hash2([], {});
-      $send(self, 'each', [], ($$107 = function($a){var self = $$107.$$s == null ? this : $$107.$$s, $post_args, args, value = nil, produced = nil, $writer = nil;
+      $send(self, 'each', [], function $$64($a){var $post_args, args, value = nil, produced = nil, $writer = nil;
 
         
         
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
+        $post_args = Opal.slice.call(arguments);
         
         args = $post_args;;
-        value = $$($nesting, 'Opal').$destructure(args);
-        produced = (function() {if ((block !== nil)) {
-          return Opal.yield1(block, value);
-        } else {
-          return value
-        }; return nil; })();
+        value = $Opal.$destructure(args);
+        produced = ((block !== nil) ? (Opal.yield1(block, value)) : (value));
         if ($truthy(hash['$key?'](produced))) {
           return nil
         } else {
           
           $writer = [produced, value];
-          $send(hash, '[]=', Opal.to_a($writer));
+          $send(hash, '[]=', $to_a($writer));
           return $writer[$rb_minus($writer["length"], 1)];
-        };}, $$107.$$s = self, $$107.$$arity = -1, $$107));
+        };}, -1);
       return hash.$values();
-    }, $Enumerable_uniq$106.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$tally', $Enumerable_tally$108 = function $$tally() {
-      var self = this;
+    $def(self, '$tally', function $$tally(hash) {
+      var self = this, out = nil;
+
+      
+      ;
+      out = $send($send(self, 'group_by', [], "itself".$to_proc()), 'transform_values', [], "count".$to_proc());
+      if ($truthy(hash)) {
+        
+        $send(out, 'each', [], function $$65(k, v){var $writer = nil;
 
-      return $send($send(self, 'group_by', [], "itself".$to_proc()), 'transform_values', [], "count".$to_proc())
-    }, $Enumerable_tally$108.$$arity = 0);
-    $alias(self, "to_a", "entries");
+          
+          
+          if (k == null) k = nil;;
+          
+          if (v == null) v = nil;;
+          $writer = [k, $rb_plus(hash.$fetch(k, 0), v)];
+          $send(hash, '[]=', $to_a($writer));
+          return $writer[$rb_minus($writer["length"], 1)];}, 2);
+        return hash;
+      } else {
+        return out
+      };
+    }, -1);
     
-    Opal.def(self, '$to_h', $Enumerable_to_h$109 = function $$to_h($a) {
-      var $iter = $Enumerable_to_h$109.$$p, block = $iter || nil, $post_args, args, self = this;
+    $def(self, '$to_h', function $$to_h($a) {
+      var block = $$to_h.$$p || nil, $post_args, args, self = this;
 
-      if ($iter) $Enumerable_to_h$109.$$p = null;
-      
+      delete $$to_h.$$p;
       
-      if ($iter) $Enumerable_to_h$109.$$p = null;;
+      ;
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
       if ((block !== nil)) {
-        return $send($send(self, 'map', [], block.$to_proc()), 'to_h', Opal.to_a(args))};
+        return $send($send(self, 'map', [], block.$to_proc()), 'to_h', $to_a(args))
+      };
       
       var hash = $hash2([], {});
 
       self.$each.$$p = function() {
-        var param = $$($nesting, 'Opal').$destructure(arguments);
-        var ary = $$($nesting, 'Opal')['$coerce_to?'](param, $$($nesting, 'Array'), "to_ary"), key, val;
+        var param = $Opal.$destructure(arguments);
+        var ary = $Opal['$coerce_to?'](param, $$$('Array'), "to_ary"), key, val;
         if (!ary.$$is_array) {
-          self.$raise($$($nesting, 'TypeError'), "" + "wrong element type " + ((ary).$class()) + " (expected array)")
+          $Kernel.$raise($$$('TypeError'), "wrong element type " + ((ary).$class()) + " (expected array)")
         }
         if (ary.length !== 2) {
-          self.$raise($$($nesting, 'ArgumentError'), "" + "wrong array length (expected 2, was " + ((ary).$length()) + ")")
+          $Kernel.$raise($$$('ArgumentError'), "wrong array length (expected 2, was " + ((ary).$length()) + ")")
         }
         key = ary[0];
         val = ary[1];
@@ -11371,246 +11174,402 @@ Opal.modules["corelib/enumerable"] = function(Opal) {
 
       return hash;
     ;
-    }, $Enumerable_to_h$109.$$arity = -1);
-    return (Opal.def(self, '$zip', $Enumerable_zip$110 = function $$zip($a) {
-      var $iter = $Enumerable_zip$110.$$p, block = $iter || nil, $post_args, others, self = this;
+    }, -1);
+    
+    $def(self, '$zip', function $$zip($a) {
+      var block = $$zip.$$p || nil, $post_args, others, self = this;
 
-      if ($iter) $Enumerable_zip$110.$$p = null;
-      
+      delete $$zip.$$p;
       
-      if ($iter) $Enumerable_zip$110.$$p = null;;
+      ;
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       others = $post_args;;
-      return $send(self.$to_a(), 'zip', Opal.to_a(others));
-    }, $Enumerable_zip$110.$$arity = -1), nil) && 'zip';
-  })($nesting[0], $nesting)
+      return $send(self.$to_a(), 'zip', $to_a(others));
+    }, -1);
+    $alias(self, "find", "detect");
+    $alias(self, "filter", "find_all");
+    $alias(self, "flat_map", "collect_concat");
+    $alias(self, "map", "collect");
+    $alias(self, "member?", "include?");
+    $alias(self, "reduce", "inject");
+    $alias(self, "select", "find_all");
+    return $alias(self, "to_a", "entries");
+  })('::')
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/enumerator"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $breaker = Opal.breaker, $slice = Opal.slice, $falsy = Opal.falsy, $truthy = Opal.truthy, $coerce_to = Opal.coerce_to, $klass = Opal.klass, $send = Opal.send, $alias = Opal.alias, $send2 = Opal.send2, $find_super = Opal.find_super;
+Opal.modules["corelib/enumerator/arithmetic_sequence"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $truthy = Opal.truthy, $to_a = Opal.to_a, $eqeq = Opal.eqeq, $Kernel = Opal.Kernel, $def = Opal.def, $rb_gt = Opal.rb_gt, $rb_lt = Opal.rb_lt, $rb_le = Opal.rb_le, $rb_ge = Opal.rb_ge, $rb_plus = Opal.rb_plus, $rb_minus = Opal.rb_minus, $eqeqeq = Opal.eqeqeq, $not = Opal.not, $rb_times = Opal.rb_times, $rb_divide = Opal.rb_divide, $alias = Opal.alias;
 
-  Opal.add_stubs(['$require', '$include', '$allocate', '$new', '$to_proc', '$!', '$respond_to?', '$nil?', '$empty?', '$+', '$class', '$__send__', '$call', '$enum_for', '$size', '$destructure', '$inspect', '$any?', '$[]', '$raise', '$yield', '$each', '$enumerator_size', '$try_convert', '$<', '$===', '$for']);
-  
-  self.$require("corelib/enumerable");
+  Opal.add_stubs('is_a?,==,raise,respond_to?,class,attr_reader,begin,end,exclude_end?,>,step,<,<=,>=,-@,_lesser_than_end?,<<,+,-,===,%,_greater_than_begin?,reverse,!,include?,*,to_i,abs,/,hash,inspect');
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Enumerator');
 
-    var $nesting = [self].concat($parent_nesting), $Enumerator_for$1, $Enumerator_initialize$2, $Enumerator_each$3, $Enumerator_size$4, $Enumerator_with_index$5, $Enumerator_each_with_index$7, $Enumerator_inspect$9;
+    var $nesting = [self].concat($parent_nesting);
 
-    self.$$prototype.size = self.$$prototype.args = self.$$prototype.object = self.$$prototype.method = nil;
-    
-    self.$include($$($nesting, 'Enumerable'));
-    self.$$prototype.$$is_enumerator = true;
-    Opal.defs(self, '$for', $Enumerator_for$1 = function(object, $a, $b) {
-      var $iter = $Enumerator_for$1.$$p, block = $iter || nil, $post_args, method, args, self = this;
+    return (function($base, $super, $parent_nesting) {
+      var self = $klass($base, $super, 'ArithmeticSequence');
 
-      if ($iter) $Enumerator_for$1.$$p = null;
-      
-      
-      if ($iter) $Enumerator_for$1.$$p = null;;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
+
+      $proto.step_arg2 = $proto.receiver_num = $proto.step_arg1 = $proto.step = $proto.range = $proto.topfx = $proto.bypfx = $proto.creation_method = $proto.skipped_arg = nil;
       
-      $post_args = Opal.slice.call(arguments, 1, arguments.length);
+      Opal.prop(self.$$prototype, '$$is_arithmetic_seq', true);
+      var inf = Infinity;
       
-      if ($post_args.length > 0) {
-        method = $post_args[0];
-        $post_args.splice(0, 1);
-      }
-      if (method == null) {
-        method = "each";
-      };
+      $def(self, '$initialize', function $$initialize(range, step, creation_method) {
+        var $a, self = this, $ret_or_1 = nil;
+
+        
+        ;
+        
+        if (creation_method == null) creation_method = "step";;
+        self.creation_method = creation_method;
+        if ($truthy(range['$is_a?']($$$('Array')))) {
+          
+          $a = [].concat($to_a(range)), (self.step_arg1 = ($a[0] == null ? nil : $a[0])), (self.step_arg2 = ($a[1] == null ? nil : $a[1])), (self.topfx = ($a[2] == null ? nil : $a[2])), (self.bypfx = ($a[3] == null ? nil : $a[3])), $a;
+          self.receiver_num = step;
+          self.step = 1;
+          self.range = ($truthy(self.step_arg2) ? (((self.step = self.step_arg2), Opal.Range.$new(self.receiver_num, self.step_arg1, false))) : ($truthy(self.step_arg1) ? (Opal.Range.$new(self.receiver_num, self.step_arg1, false)) : (Opal.Range.$new(self.receiver_num, nil, false))));
+        } else {
+          
+          if (!$truthy(step)) {
+            self.skipped_arg = true
+          };
+          $a = [range, ($truthy(($ret_or_1 = step)) ? ($ret_or_1) : (1))], (self.range = $a[0]), (self.step = $a[1]), $a;
+        };
+        self.object = self;
+        if ($eqeq(self.step, 0)) {
+          $Kernel.$raise($$('ArgumentError'), "step can't be 0")
+        };
+        if ($truthy(self.step['$respond_to?']("to_int"))) {
+          return nil
+        } else {
+          return $Kernel.$raise($$('ArgumentError'), "" + ("no implicit conversion of " + (self.step.$class()) + " ") + "into Integer")
+        };
+      }, -2);
+      self.$attr_reader("step");
       
-      args = $post_args;;
+      $def(self, '$begin', function $$begin() {
+        var self = this;
+
+        return self.range.$begin()
+      }, 0);
       
-      var obj = self.$allocate();
+      $def(self, '$end', function $$end() {
+        var self = this;
 
-      obj.object = object;
-      obj.size   = block;
-      obj.method = method;
-      obj.args   = args;
+        return self.range.$end()
+      }, 0);
+      
+      $def(self, '$exclude_end?', function $ArithmeticSequence_exclude_end$ques$1() {
+        var self = this;
 
-      return obj;
-    ;
-    }, $Enumerator_for$1.$$arity = -2);
-    
-    Opal.def(self, '$initialize', $Enumerator_initialize$2 = function $$initialize($a) {
-      var $iter = $Enumerator_initialize$2.$$p, block = $iter || nil, $post_args, self = this, $ret_or_1 = nil;
+        return self.range['$exclude_end?']()
+      }, 0);
+      
+      $def(self, '$_lesser_than_end?', function $ArithmeticSequence__lesser_than_end$ques$2(val) {
+        var self = this, end_ = nil, $ret_or_1 = nil;
 
-      if ($iter) $Enumerator_initialize$2.$$p = null;
+        
+        end_ = ($truthy(($ret_or_1 = self.$end())) ? ($ret_or_1) : (inf));
+        if ($truthy($rb_gt(self.$step(), 0))) {
+          if ($truthy(self['$exclude_end?']())) {
+            return $rb_lt(val, end_)
+          } else {
+            return $rb_le(val, end_)
+          }
+        } else if ($truthy(self['$exclude_end?']())) {
+          return $rb_gt(val, end_)
+        } else {
+          return $rb_ge(val, end_)
+        };
+      }, 1);
       
+      $def(self, '$_greater_than_begin?', function $ArithmeticSequence__greater_than_begin$ques$3(val) {
+        var self = this, begin_ = nil, $ret_or_1 = nil;
+
+        
+        begin_ = ($truthy(($ret_or_1 = self.$begin())) ? ($ret_or_1) : ((inf)['$-@']()));
+        if ($truthy($rb_gt(self.$step(), 0))) {
+          return $rb_gt(val, begin_)
+        } else {
+          return $rb_lt(val, begin_)
+        };
+      }, 1);
       
-      if ($iter) $Enumerator_initialize$2.$$p = null;;
+      $def(self, '$first', function $$first(count) {
+        var $a, self = this, iter = nil, $ret_or_1 = nil, out = nil;
+
+        
+        ;
+        iter = ($truthy(($ret_or_1 = self.$begin())) ? ($ret_or_1) : ((inf)['$-@']()));
+        if (!$truthy(count)) {
+          return ($truthy(self['$_lesser_than_end?'](iter)) ? (iter) : (nil))
+        };
+        out = [];
+        while ($truthy(($truthy(($ret_or_1 = self['$_lesser_than_end?'](iter))) ? ($rb_gt(count, 0)) : ($ret_or_1)))) {
+          
+          out['$<<'](iter);
+          iter = $rb_plus(iter, self.$step());
+          count = $rb_minus(count, 1);
+        };
+        return out;
+      }, -1);
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
-      ;
-      if ($truthy(block)) {
+      $def(self, '$each', function $$each() {
+        var block = $$each.$$p || nil, $a, self = this, $ret_or_1 = nil, iter = nil;
+
+        delete $$each.$$p;
         
-        self.object = $send($$($nesting, 'Generator'), 'new', [], block.$to_proc());
-        self.method = "each";
-        self.args = [];
-        self.size = arguments[0] || nil;
-        if ($truthy((function() {if ($truthy(($ret_or_1 = self.size))) {
-          return self.size['$respond_to?']("call")['$!']()
-        } else {
-          return $ret_or_1
-        }; return nil; })())) {
-          return (self.size = $coerce_to(self.size, $$($nesting, 'Integer'), 'to_int'))
+        ;
+        if (!(block !== nil)) {
+          return self
+        };
+        if ($eqeqeq(nil, ($ret_or_1 = self.$begin()))) {
+          $Kernel.$raise($$('TypeError'), "nil can't be coerced into Integer")
         } else {
-          return nil
+          nil
         };
-      } else {
-        
-        self.object = arguments[0];
-        self.method = arguments[1] || "each";
-        self.args = $slice.call(arguments, 2);
-        return (self.size = nil);
-      };
-    }, $Enumerator_initialize$2.$$arity = -1);
-    
-    Opal.def(self, '$each', $Enumerator_each$3 = function $$each($a) {
-      var $iter = $Enumerator_each$3.$$p, block = $iter || nil, $post_args, args, self = this, $ret_or_2 = nil;
+        iter = ($truthy(($ret_or_1 = self.$begin())) ? ($ret_or_1) : ((inf)['$-@']()));
+        while ($truthy(self['$_lesser_than_end?'](iter))) {
+          
+          Opal.yield1(block, iter);
+          iter = $rb_plus(iter, self.$step());
+        };
+        return self;
+      }, 0);
+      
+      $def(self, '$last', function $$last(count) {
+        var $a, self = this, $ret_or_1 = nil, iter = nil, out = nil;
 
-      if ($iter) $Enumerator_each$3.$$p = null;
+        
+        ;
+        if (($eqeqeq(inf, ($ret_or_1 = self.$end())) || ($eqeqeq((inf)['$-@'](), $ret_or_1)))) {
+          $Kernel.$raise($$$('FloatDomainError'), self.$end())
+        } else if ($eqeqeq(nil, $ret_or_1)) {
+          $Kernel.$raise($$$('RangeError'), "cannot get the last element of endless arithmetic sequence")
+        } else {
+          nil
+        };
+        iter = $rb_minus(self.$end(), $rb_minus(self.$end(), self.$begin())['$%'](self.$step()));
+        if (!$truthy(self['$_lesser_than_end?'](iter))) {
+          iter = $rb_minus(iter, self.$step())
+        };
+        if (!$truthy(count)) {
+          return ($truthy(self['$_greater_than_begin?'](iter)) ? (iter) : (nil))
+        };
+        out = [];
+        while ($truthy(($truthy(($ret_or_1 = self['$_greater_than_begin?'](iter))) ? ($rb_gt(count, 0)) : ($ret_or_1)))) {
+          
+          out['$<<'](iter);
+          iter = $rb_minus(iter, self.$step());
+          count = $rb_minus(count, 1);
+        };
+        return out.$reverse();
+      }, -1);
       
+      $def(self, '$size', function $$size() {
+        var self = this, step_sign = nil, iter = nil;
+
+        
+        step_sign = ($truthy($rb_gt(self.$step(), 0)) ? (1) : (-1));
+        if ($not(self['$_lesser_than_end?'](self.$begin()))) {
+          return 0
+        } else if ($truthy([(inf)['$-@'](), inf]['$include?'](self.$step()))) {
+          return 1
+        } else if (($truthy([$rb_times((inf)['$-@'](), step_sign), nil]['$include?'](self.$begin())) || ($truthy([$rb_times(inf, step_sign), nil]['$include?'](self.$end()))))) {
+          return inf;
+        } else {
+          
+          iter = $rb_minus(self.$end(), $rb_minus(self.$end(), self.$begin())['$%'](self.$step()));
+          if (!$truthy(self['$_lesser_than_end?'](iter))) {
+            iter = $rb_minus(iter, self.$step())
+          };
+          return $rb_plus($rb_divide($rb_minus(iter, self.$begin()), self.$step()).$abs().$to_i(), 1);
+        };
+      }, 0);
       
-      if ($iter) $Enumerator_each$3.$$p = null;;
+      $def(self, '$==', function $ArithmeticSequence_$eq_eq$4(other) {
+        var self = this, $ret_or_1 = nil, $ret_or_2 = nil, $ret_or_3 = nil, $ret_or_4 = nil;
+
+        if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = ($truthy(($ret_or_3 = ($truthy(($ret_or_4 = self.$class()['$=='](other.$class()))) ? (self.$begin()['$=='](other.$begin())) : ($ret_or_4)))) ? (self.$end()['$=='](other.$end())) : ($ret_or_3)))) ? (self.$step()['$=='](other.$step())) : ($ret_or_2))))) {
+          return self['$exclude_end?']()['$=='](other['$exclude_end?']())
+        } else {
+          return $ret_or_1
+        }
+      }, 1);
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $def(self, '$hash', function $$hash() {
+        var self = this;
+
+        return [self.$begin(), self.$end(), self.$step(), self['$exclude_end?']()].$hash()
+      }, 0);
       
-      args = $post_args;;
-      if ($truthy((function() {if ($truthy(($ret_or_2 = block['$nil?']()))) {
-        return args['$empty?']()
-      } else {
-        return $ret_or_2
-      }; return nil; })())) {
-        return self};
-      args = $rb_plus(self.args, args);
-      if ($truthy(block['$nil?']())) {
-        return $send(self.$class(), 'new', [self.object, self.method].concat(Opal.to_a(args)))};
-      return $send(self.object, '__send__', [self.method].concat(Opal.to_a(args)), block.$to_proc());
-    }, $Enumerator_each$3.$$arity = -1);
-    
-    Opal.def(self, '$size', $Enumerator_size$4 = function $$size() {
-      var self = this;
+      $def(self, '$inspect', function $$inspect() {
+        var self = this, args = nil;
+
+        if ($truthy(self.receiver_num)) {
+          
+          args = ($truthy(self.step_arg2) ? ("(" + (self.topfx) + (self.step_arg1.$inspect()) + ", " + (self.bypfx) + (self.step_arg2.$inspect()) + ")") : ($truthy(self.step_arg1) ? ("(" + (self.topfx) + (self.step_arg1.$inspect()) + ")") : nil));
+          return "(" + (self.receiver_num.$inspect()) + "." + (self.creation_method) + (args) + ")";
+        } else {
+          
+          args = ($truthy(self.skipped_arg) ? (nil) : ("(" + (self.step) + ")"));
+          return "((" + (self.range.$inspect()) + ")." + (self.creation_method) + (args) + ")";
+        }
+      }, 0);
+      $alias(self, "===", "==");
+      return $alias(self, "eql?", "==");
+    })(self, self, $nesting)
+  })('::', null, $nesting)
+};
+
+Opal.modules["corelib/enumerator/chain"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $def = Opal.def, $send = Opal.send, $to_a = Opal.to_a, $truthy = Opal.truthy, $rb_plus = Opal.rb_plus;
+
+  Opal.add_stubs('to_enum,size,each,<<,to_proc,include?,+,reverse_each,respond_to?,rewind,inspect');
+  return (function($base, $super) {
+    var self = $klass($base, $super, 'Enumerator');
 
-      if ($truthy(self.size['$respond_to?']("call"))) {
-        return $send(self.size, 'call', Opal.to_a(self.args))
-      } else {
-        return self.size
-      }
-    }, $Enumerator_size$4.$$arity = 0);
     
-    Opal.def(self, '$with_index', $Enumerator_with_index$5 = function $$with_index(offset) {
-      var $iter = $Enumerator_with_index$5.$$p, block = $iter || nil, $$6, self = this;
+    return (function($base, $super) {
+      var self = $klass($base, $super, 'Chain');
 
-      if ($iter) $Enumerator_with_index$5.$$p = null;
-      
+      var $proto = self.$$prototype;
+
+      $proto.enums = $proto.iterated = nil;
       
-      if ($iter) $Enumerator_with_index$5.$$p = null;;
       
-      if (offset == null) {
-        offset = 0;
-      };
-      offset = (function() {if ($truthy(offset)) {
-        return $coerce_to(offset, $$($nesting, 'Integer'), 'to_int')
-      } else {
-        return 0
-      }; return nil; })();
-      if ($truthy(block)) {
-      } else {
-        return $send(self, 'enum_for', ["with_index", offset], ($$6 = function(){var self = $$6.$$s == null ? this : $$6.$$s;
+      $def(self, '$initialize', function $$initialize($a) {
+        var $post_args, enums, self = this;
 
-          return self.$size()}, $$6.$$s = self, $$6.$$arity = 0, $$6))
-      };
+        
+        
+        $post_args = Opal.slice.call(arguments);
+        
+        enums = $post_args;;
+        self.enums = enums;
+        self.iterated = [];
+        return (self.object = self);
+      }, -1);
       
-      var result, index = offset;
+      $def(self, '$each', function $$each($a) {
+        var block = $$each.$$p || nil, $post_args, args, self = this;
 
-      self.$each.$$p = function() {
-        var param = $$($nesting, 'Opal').$destructure(arguments),
-            value = block(param, index);
+        delete $$each.$$p;
+        
+        ;
+        
+        $post_args = Opal.slice.call(arguments);
+        
+        args = $post_args;;
+        if (!(block !== nil)) {
+          return $send(self, 'to_enum', ["each"].concat($to_a(args)), function $$1(){var self = $$1.$$s == null ? this : $$1.$$s;
 
-        index++;
+            return self.$size()}, {$$arity: 0, $$s: self})
+        };
+        $send(self.enums, 'each', [], function $$2(enum$){var self = $$2.$$s == null ? this : $$2.$$s;
+          if (self.iterated == null) self.iterated = nil;
 
-        return value;
-      }
+          
+          
+          if (enum$ == null) enum$ = nil;;
+          self.iterated['$<<'](enum$);
+          return $send(enum$, 'each', $to_a(args), block.$to_proc());}, {$$arity: 1, $$s: self});
+        return self;
+      }, -1);
+      
+      $def(self, '$size', function $$size($a) {try {
 
-      return self.$each();
-    ;
-    }, $Enumerator_with_index$5.$$arity = -1);
-    $alias(self, "with_object", "each_with_object");
-    
-    Opal.def(self, '$each_with_index', $Enumerator_each_with_index$7 = function $$each_with_index() {
-      var $iter = $Enumerator_each_with_index$7.$$p, block = $iter || nil, $$8, self = this, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        var $post_args, args, self = this, accum = nil;
 
-      if ($iter) $Enumerator_each_with_index$7.$$p = null;
-      // Prepare super implicit arguments
-      for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-        $zuper[$zuper_i] = arguments[$zuper_i];
-      }
-      
+        
+        
+        $post_args = Opal.slice.call(arguments);
+        
+        args = $post_args;;
+        accum = 0;
+        $send(self.enums, 'each', [], function $$3(enum$){var size = nil;
+
+          
+          
+          if (enum$ == null) enum$ = nil;;
+          size = $send(enum$, 'size', $to_a(args));
+          if ($truthy([nil, $$$($$$('Float'), 'INFINITY')]['$include?'](size))) {
+            Opal.ret(size)
+          };
+          return (accum = $rb_plus(accum, size));}, 1);
+        return accum;
+        } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
+      }, -1);
       
-      if ($iter) $Enumerator_each_with_index$7.$$p = null;;
-      if ((block !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["each_with_index"], ($$8 = function(){var self = $$8.$$s == null ? this : $$8.$$s;
+      $def(self, '$rewind', function $$rewind() {
+        var self = this;
 
-          return self.$size()}, $$8.$$s = self, $$8.$$arity = 0, $$8))
-      };
-      $send2(self, $find_super(self, 'each_with_index', $Enumerator_each_with_index$7, false, true), 'each_with_index', $zuper, $iter);
-      return self.object;
-    }, $Enumerator_each_with_index$7.$$arity = 0);
-    
-    Opal.def(self, '$inspect', $Enumerator_inspect$9 = function $$inspect() {
-      var self = this, result = nil;
+        
+        $send(self.iterated, 'reverse_each', [], function $$4(enum$){
+          
+          
+          if (enum$ == null) enum$ = nil;;
+          if ($truthy(enum$['$respond_to?']("rewind"))) {
+            return enum$.$rewind()
+          } else {
+            return nil
+          };}, 1);
+        self.iterated = [];
+        return self;
+      }, 0);
+      return $def(self, '$inspect', function $$inspect() {
+        var self = this;
 
-      
-      result = "" + "#<" + (self.$class()) + ": " + (self.object.$inspect()) + ":" + (self.method);
-      if ($truthy(self.args['$any?']())) {
-        result = $rb_plus(result, "" + "(" + (self.args.$inspect()['$[]']($$($nesting, 'Range').$new(1, -2))) + ")")};
-      return $rb_plus(result, ">");
-    }, $Enumerator_inspect$9.$$arity = 0);
-    (function($base, $super, $parent_nesting) {
+        return "#<Enumerator::Chain: " + (self.enums.$inspect()) + ">"
+      }, 0);
+    })(self, self)
+  })('::', null)
+};
+
+Opal.modules["corelib/enumerator/generator"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $breaker = Opal.breaker, $klass = Opal.klass, $truthy = Opal.truthy, $Kernel = Opal.Kernel, $def = Opal.def, $send = Opal.send;
+
+  Opal.add_stubs('include,raise,new,to_proc');
+  return (function($base, $super, $parent_nesting) {
+    var self = $klass($base, $super, 'Enumerator');
+
+    var $nesting = [self].concat($parent_nesting);
+
+    return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Generator');
 
-      var $nesting = [self].concat($parent_nesting), $Generator_initialize$10, $Generator_each$11;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.block = nil;
+      $proto.block = nil;
       
-      self.$include($$($nesting, 'Enumerable'));
+      self.$include($$$('Enumerable'));
       
-      Opal.def(self, '$initialize', $Generator_initialize$10 = function $$initialize() {
-        var $iter = $Generator_initialize$10.$$p, block = $iter || nil, self = this;
+      $def(self, '$initialize', function $$initialize() {
+        var block = $$initialize.$$p || nil, self = this;
 
-        if ($iter) $Generator_initialize$10.$$p = null;
-        
+        delete $$initialize.$$p;
         
-        if ($iter) $Generator_initialize$10.$$p = null;;
-        if ($truthy(block)) {
-        } else {
-          self.$raise($$($nesting, 'LocalJumpError'), "no block given")
+        ;
+        if (!$truthy(block)) {
+          $Kernel.$raise($$$('LocalJumpError'), "no block given")
         };
         return (self.block = block);
-      }, $Generator_initialize$10.$$arity = 0);
-      return (Opal.def(self, '$each', $Generator_each$11 = function $$each($a) {
-        var $iter = $Generator_each$11.$$p, block = $iter || nil, $post_args, args, self = this, yielder = nil;
+      }, 0);
+      return $def(self, '$each', function $$each($a) {
+        var block = $$each.$$p || nil, $post_args, args, self = this, yielder = nil;
 
-        if ($iter) $Generator_each$11.$$p = null;
-        
+        delete $$each.$$p;
         
-        if ($iter) $Generator_each$11.$$p = null;;
+        ;
         
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
+        $post_args = Opal.slice.call(arguments);
         
         args = $post_args;;
-        yielder = $send($$($nesting, 'Yielder'), 'new', [], block.$to_proc());
+        yielder = $send($$('Yielder'), 'new', [], block.$to_proc());
         
         try {
           args.unshift(yielder);
@@ -11627,604 +11586,787 @@ Opal.modules["corelib/enumerator"] = function(Opal) {
         }
       ;
         return self;
-      }, $Generator_each$11.$$arity = -1), nil) && 'each';
-    })($nesting[0], null, $nesting);
-    (function($base, $super, $parent_nesting) {
-      var self = $klass($base, $super, 'Yielder');
-
-      var $nesting = [self].concat($parent_nesting), $Yielder_initialize$12, $Yielder_yield$13, $Yielder_$lt$lt$14;
-
-      self.$$prototype.block = nil;
-      
-      
-      Opal.def(self, '$initialize', $Yielder_initialize$12 = function $$initialize() {
-        var $iter = $Yielder_initialize$12.$$p, block = $iter || nil, self = this;
+      }, -1);
+    })($nesting[0], null, $nesting)
+  })($nesting[0], null, $nesting)
+};
 
-        if ($iter) $Yielder_initialize$12.$$p = null;
-        
-        
-        if ($iter) $Yielder_initialize$12.$$p = null;;
-        return (self.block = block);
-      }, $Yielder_initialize$12.$$arity = 0);
-      
-      Opal.def(self, '$yield', $Yielder_yield$13 = function($a) {
-        var $post_args, values, self = this;
+Opal.modules["corelib/enumerator/lazy"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $truthy = Opal.truthy, $coerce_to = Opal.coerce_to, $yield1 = Opal.yield1, $yieldX = Opal.yieldX, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $to_a = Opal.to_a, $defs = Opal.defs, $Kernel = Opal.Kernel, $send = Opal.send, $def = Opal.def, $Opal = Opal.Opal, $rb_lt = Opal.rb_lt, $eqeqeq = Opal.eqeqeq, $rb_plus = Opal.rb_plus, $alias = Opal.alias;
 
-        
-        
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
-        
-        values = $post_args;;
-        
-        var value = Opal.yieldX(self.block, values);
-
-        if (value === $breaker) {
-          throw $breaker;
-        }
+  Opal.add_stubs('raise,each,new,enumerator_size,yield,respond_to?,try_convert,<,===,+,for,class,to_proc,destructure,inspect');
+  return (function($base, $super, $parent_nesting) {
+    var self = $klass($base, $super, 'Enumerator');
 
-        return value;
-      ;
-      }, $Yielder_yield$13.$$arity = -1);
-      return (Opal.def(self, '$<<', $Yielder_$lt$lt$14 = function($a) {
-        var $post_args, values, self = this;
+    var $nesting = [self].concat($parent_nesting);
 
-        
-        
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
-        
-        values = $post_args;;
-        $send(self, 'yield', Opal.to_a(values));
-        return self;
-      }, $Yielder_$lt$lt$14.$$arity = -1), nil) && '<<';
-    })($nesting[0], null, $nesting);
-    (function($base, $super, $parent_nesting) {
+    return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Lazy');
 
-      var $nesting = [self].concat($parent_nesting), $Lazy_initialize$15, $Lazy_lazy$18, $Lazy_collect$19, $Lazy_collect_concat$21, $Lazy_drop$25, $Lazy_drop_while$27, $Lazy_enum_for$29, $Lazy_find_all$30, $Lazy_grep$32, $Lazy_reject$35, $Lazy_take$37, $Lazy_take_while$39, $Lazy_inspect$41;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.enumerator = nil;
+      $proto.enumerator = nil;
       
-      (function($base, $super, $parent_nesting) {
-        var self = $klass($base, $super, 'StopLazyError');
+      $klass(self, $$$('Exception'), 'StopLazyError');
+      $defs(self, '$for', function $Lazy_for$1(object, $a) {
+        var $post_args, $rest_arg, $yield = $Lazy_for$1.$$p || nil, self = this, lazy = nil;
 
-        var $nesting = [self].concat($parent_nesting);
-
-        return nil
-      })($nesting[0], $$($nesting, 'Exception'), $nesting);
+        delete $Lazy_for$1.$$p;
+        
+        
+        $post_args = Opal.slice.call(arguments, 1);
+        
+        $rest_arg = $post_args;;
+        lazy = $send2(self, $find_super(self, 'for', $Lazy_for$1, false, true), 'for', [object].concat($to_a($rest_arg)), $yield);
+        lazy.enumerator = object;
+        return lazy;
+      }, -2);
       
-      Opal.def(self, '$initialize', $Lazy_initialize$15 = function $$initialize(object, size) {
-        var $iter = $Lazy_initialize$15.$$p, block = $iter || nil, $$16, self = this;
+      $def(self, '$initialize', function $$initialize(object, size) {
+        var block = $$initialize.$$p || nil, self = this;
 
-        if ($iter) $Lazy_initialize$15.$$p = null;
-        
+        delete $$initialize.$$p;
         
-        if ($iter) $Lazy_initialize$15.$$p = null;;
+        ;
         
-        if (size == null) {
-          size = nil;
-        };
-        if ((block !== nil)) {
-        } else {
-          self.$raise($$($nesting, 'ArgumentError'), "tried to call lazy new without a block")
+        if (size == null) size = nil;;
+        if (!(block !== nil)) {
+          $Kernel.$raise($$$('ArgumentError'), "tried to call lazy new without a block")
         };
         self.enumerator = object;
-        return $send2(self, $find_super(self, 'initialize', $Lazy_initialize$15, false, true), 'initialize', [size], ($$16 = function(yielder, $a){var self = $$16.$$s == null ? this : $$16.$$s, $post_args, each_args, $$17;
+        return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [size], function $$2(yielder, $a){var $post_args, each_args;
 
           
           
-          if (yielder == null) {
-            yielder = nil;
-          };
+          if (yielder == null) yielder = nil;;
           
-          $post_args = Opal.slice.call(arguments, 1, arguments.length);
+          $post_args = Opal.slice.call(arguments, 1);
           
           each_args = $post_args;;
           try {
-            return $send(object, 'each', Opal.to_a(each_args), ($$17 = function($b){var self = $$17.$$s == null ? this : $$17.$$s, $post_args, args;
+            return $send(object, 'each', $to_a(each_args), function $$3($b){var $post_args, args;
 
               
               
-              $post_args = Opal.slice.call(arguments, 0, arguments.length);
+              $post_args = Opal.slice.call(arguments);
               
               args = $post_args;;
               
             args.unshift(yielder);
 
-            Opal.yieldX(block, args);
-          ;}, $$17.$$s = self, $$17.$$arity = -1, $$17))
+            $yieldX(block, args);
+          ;}, -1)
           } catch ($err) {
-            if (Opal.rescue($err, [$$($nesting, 'Exception')])) {
+            if (Opal.rescue($err, [$$('StopLazyError')])) {
               try {
                 return nil
               } finally { Opal.pop_exception(); }
             } else { throw $err; }
-          };}, $$16.$$s = self, $$16.$$arity = -2, $$16));
-      }, $Lazy_initialize$15.$$arity = -2);
-      $alias(self, "force", "to_a");
+          };}, -2);
+      }, -2);
       
-      Opal.def(self, '$lazy', $Lazy_lazy$18 = function $$lazy() {
+      $def(self, '$lazy', function $$lazy() {
         var self = this;
 
         return self
-      }, $Lazy_lazy$18.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$collect', $Lazy_collect$19 = function $$collect() {
-        var $iter = $Lazy_collect$19.$$p, block = $iter || nil, $$20, self = this;
+      $def(self, '$collect', function $$collect() {
+        var block = $$collect.$$p || nil, self = this;
 
-        if ($iter) $Lazy_collect$19.$$p = null;
+        delete $$collect.$$p;
         
-        
-        if ($iter) $Lazy_collect$19.$$p = null;;
-        if ($truthy(block)) {
-        } else {
-          self.$raise($$($nesting, 'ArgumentError'), "tried to call lazy map without a block")
+        ;
+        if (!$truthy(block)) {
+          $Kernel.$raise($$$('ArgumentError'), "tried to call lazy map without a block")
         };
-        return $send($$($nesting, 'Lazy'), 'new', [self, self.$enumerator_size()], ($$20 = function(enum$, $a){var self = $$20.$$s == null ? this : $$20.$$s, $post_args, args;
+        return $send($$('Lazy'), 'new', [self, self.$enumerator_size()], function $$4(enum$, $a){var $post_args, args;
 
           
           
-          if (enum$ == null) {
-            enum$ = nil;
-          };
+          if (enum$ == null) enum$ = nil;;
           
-          $post_args = Opal.slice.call(arguments, 1, arguments.length);
+          $post_args = Opal.slice.call(arguments, 1);
           
           args = $post_args;;
           
-          var value = Opal.yieldX(block, args);
+          var value = $yieldX(block, args);
 
           enum$.$yield(value);
-        ;}, $$20.$$s = self, $$20.$$arity = -2, $$20));
-      }, $Lazy_collect$19.$$arity = 0);
+        ;}, -2);
+      }, 0);
       
-      Opal.def(self, '$collect_concat', $Lazy_collect_concat$21 = function $$collect_concat() {
-        var $iter = $Lazy_collect_concat$21.$$p, block = $iter || nil, $$22, self = this;
+      $def(self, '$collect_concat', function $$collect_concat() {
+        var block = $$collect_concat.$$p || nil, self = this;
 
-        if ($iter) $Lazy_collect_concat$21.$$p = null;
-        
+        delete $$collect_concat.$$p;
         
-        if ($iter) $Lazy_collect_concat$21.$$p = null;;
-        if ($truthy(block)) {
-        } else {
-          self.$raise($$($nesting, 'ArgumentError'), "tried to call lazy map without a block")
+        ;
+        if (!$truthy(block)) {
+          $Kernel.$raise($$$('ArgumentError'), "tried to call lazy map without a block")
         };
-        return $send($$($nesting, 'Lazy'), 'new', [self, nil], ($$22 = function(enum$, $a){var self = $$22.$$s == null ? this : $$22.$$s, $post_args, args, $$23, $$24;
+        return $send($$('Lazy'), 'new', [self, nil], function $$5(enum$, $a){var $post_args, args;
 
           
           
-          if (enum$ == null) {
-            enum$ = nil;
-          };
+          if (enum$ == null) enum$ = nil;;
           
-          $post_args = Opal.slice.call(arguments, 1, arguments.length);
+          $post_args = Opal.slice.call(arguments, 1);
           
           args = $post_args;;
           
-          var value = Opal.yieldX(block, args);
+          var value = $yieldX(block, args);
 
           if ((value)['$respond_to?']("force") && (value)['$respond_to?']("each")) {
-            $send((value), 'each', [], ($$23 = function(v){var self = $$23.$$s == null ? this : $$23.$$s;
-
+            $send((value), 'each', [], function $$6(v){
             
             
-            if (v == null) {
-              v = nil;
-            };
-            return enum$.$yield(v);}, $$23.$$s = self, $$23.$$arity = 1, $$23))
+            if (v == null) v = nil;;
+            return enum$.$yield(v);}, 1)
           }
           else {
-            var array = $$($nesting, 'Opal').$try_convert(value, $$($nesting, 'Array'), "to_ary");
+            var array = $Opal.$try_convert(value, $$$('Array'), "to_ary");
 
             if (array === nil) {
               enum$.$yield(value);
             }
             else {
-              $send((value), 'each', [], ($$24 = function(v){var self = $$24.$$s == null ? this : $$24.$$s;
-
+              $send((value), 'each', [], function $$7(v){
             
             
-            if (v == null) {
-              v = nil;
-            };
-            return enum$.$yield(v);}, $$24.$$s = self, $$24.$$arity = 1, $$24));
+            if (v == null) v = nil;;
+            return enum$.$yield(v);}, 1);
             }
           }
-        ;}, $$22.$$s = self, $$22.$$arity = -2, $$22));
-      }, $Lazy_collect_concat$21.$$arity = 0);
+        ;}, -2);
+      }, 0);
       
-      Opal.def(self, '$drop', $Lazy_drop$25 = function $$drop(n) {
-        var $$26, self = this, current_size = nil, set_size = nil, dropped = nil;
+      $def(self, '$drop', function $$drop(n) {
+        var self = this, current_size = nil, set_size = nil, dropped = nil;
 
         
-        n = $coerce_to(n, $$($nesting, 'Integer'), 'to_int');
+        n = $coerce_to(n, $$$('Integer'), 'to_int');
         if ($truthy($rb_lt(n, 0))) {
-          self.$raise($$($nesting, 'ArgumentError'), "attempt to drop negative size")};
+          $Kernel.$raise($$$('ArgumentError'), "attempt to drop negative size")
+        };
         current_size = self.$enumerator_size();
-        set_size = (function() {if ($truthy($$($nesting, 'Integer')['$==='](current_size))) {
-          if ($truthy($rb_lt(n, current_size))) {
-            return n
-          } else {
-            return current_size
-          }
-        } else {
-          return current_size
-        }; return nil; })();
+        set_size = ($eqeqeq($$$('Integer'), current_size) ? (($truthy($rb_lt(n, current_size)) ? (n) : (current_size))) : (current_size));
         dropped = 0;
-        return $send($$($nesting, 'Lazy'), 'new', [self, set_size], ($$26 = function(enum$, $a){var self = $$26.$$s == null ? this : $$26.$$s, $post_args, args;
+        return $send($$('Lazy'), 'new', [self, set_size], function $$8(enum$, $a){var $post_args, args;
 
           
           
-          if (enum$ == null) {
-            enum$ = nil;
-          };
+          if (enum$ == null) enum$ = nil;;
           
-          $post_args = Opal.slice.call(arguments, 1, arguments.length);
+          $post_args = Opal.slice.call(arguments, 1);
           
           args = $post_args;;
           if ($truthy($rb_lt(dropped, n))) {
             return (dropped = $rb_plus(dropped, 1))
           } else {
-            return $send(enum$, 'yield', Opal.to_a(args))
-          };}, $$26.$$s = self, $$26.$$arity = -2, $$26));
-      }, $Lazy_drop$25.$$arity = 1);
+            return $send(enum$, 'yield', $to_a(args))
+          };}, -2);
+      }, 1);
       
-      Opal.def(self, '$drop_while', $Lazy_drop_while$27 = function $$drop_while() {
-        var $iter = $Lazy_drop_while$27.$$p, block = $iter || nil, $$28, self = this, succeeding = nil;
+      $def(self, '$drop_while', function $$drop_while() {
+        var block = $$drop_while.$$p || nil, self = this, succeeding = nil;
 
-        if ($iter) $Lazy_drop_while$27.$$p = null;
-        
+        delete $$drop_while.$$p;
         
-        if ($iter) $Lazy_drop_while$27.$$p = null;;
-        if ($truthy(block)) {
-        } else {
-          self.$raise($$($nesting, 'ArgumentError'), "tried to call lazy drop_while without a block")
+        ;
+        if (!$truthy(block)) {
+          $Kernel.$raise($$$('ArgumentError'), "tried to call lazy drop_while without a block")
         };
         succeeding = true;
-        return $send($$($nesting, 'Lazy'), 'new', [self, nil], ($$28 = function(enum$, $a){var self = $$28.$$s == null ? this : $$28.$$s, $post_args, args;
+        return $send($$('Lazy'), 'new', [self, nil], function $$9(enum$, $a){var $post_args, args;
 
           
           
-          if (enum$ == null) {
-            enum$ = nil;
-          };
+          if (enum$ == null) enum$ = nil;;
           
-          $post_args = Opal.slice.call(arguments, 1, arguments.length);
+          $post_args = Opal.slice.call(arguments, 1);
           
           args = $post_args;;
           if ($truthy(succeeding)) {
             
-            var value = Opal.yieldX(block, args);
+            var value = $yieldX(block, args);
 
-            if ($falsy(value)) {
+            if (!$truthy(value)) {
               succeeding = false;
 
-              $send(enum$, 'yield', Opal.to_a(args));
+              $send(enum$, 'yield', $to_a(args));
             }
           
           } else {
-            return $send(enum$, 'yield', Opal.to_a(args))
-          };}, $$28.$$s = self, $$28.$$arity = -2, $$28));
-      }, $Lazy_drop_while$27.$$arity = 0);
+            return $send(enum$, 'yield', $to_a(args))
+          };}, -2);
+      }, 0);
       
-      Opal.def(self, '$enum_for', $Lazy_enum_for$29 = function $$enum_for($a, $b) {
-        var $iter = $Lazy_enum_for$29.$$p, block = $iter || nil, $post_args, method, args, self = this;
+      $def(self, '$enum_for', function $$enum_for($a, $b) {
+        var block = $$enum_for.$$p || nil, $post_args, method, args, self = this;
 
-        if ($iter) $Lazy_enum_for$29.$$p = null;
+        delete $$enum_for.$$p;
         
+        ;
         
-        if ($iter) $Lazy_enum_for$29.$$p = null;;
-        
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
+        $post_args = Opal.slice.call(arguments);
         
-        if ($post_args.length > 0) {
-          method = $post_args[0];
-          $post_args.splice(0, 1);
-        }
-        if (method == null) {
-          method = "each";
-        };
+        if ($post_args.length > 0) method = $post_args.shift();
+        if (method == null) method = "each";;
         
         args = $post_args;;
-        return $send(self.$class(), 'for', [self, method].concat(Opal.to_a(args)), block.$to_proc());
-      }, $Lazy_enum_for$29.$$arity = -1);
-      $alias(self, "filter", "find_all");
+        return $send(self.$class(), 'for', [self, method].concat($to_a(args)), block.$to_proc());
+      }, -1);
       
-      Opal.def(self, '$find_all', $Lazy_find_all$30 = function $$find_all() {
-        var $iter = $Lazy_find_all$30.$$p, block = $iter || nil, $$31, self = this;
+      $def(self, '$find_all', function $$find_all() {
+        var block = $$find_all.$$p || nil, self = this;
 
-        if ($iter) $Lazy_find_all$30.$$p = null;
-        
+        delete $$find_all.$$p;
         
-        if ($iter) $Lazy_find_all$30.$$p = null;;
-        if ($truthy(block)) {
-        } else {
-          self.$raise($$($nesting, 'ArgumentError'), "tried to call lazy select without a block")
+        ;
+        if (!$truthy(block)) {
+          $Kernel.$raise($$$('ArgumentError'), "tried to call lazy select without a block")
         };
-        return $send($$($nesting, 'Lazy'), 'new', [self, nil], ($$31 = function(enum$, $a){var self = $$31.$$s == null ? this : $$31.$$s, $post_args, args;
+        return $send($$('Lazy'), 'new', [self, nil], function $$10(enum$, $a){var $post_args, args;
 
           
           
-          if (enum$ == null) {
-            enum$ = nil;
-          };
+          if (enum$ == null) enum$ = nil;;
           
-          $post_args = Opal.slice.call(arguments, 1, arguments.length);
+          $post_args = Opal.slice.call(arguments, 1);
           
           args = $post_args;;
           
-          var value = Opal.yieldX(block, args);
+          var value = $yieldX(block, args);
 
           if ($truthy(value)) {
-            $send(enum$, 'yield', Opal.to_a(args));
+            $send(enum$, 'yield', $to_a(args));
           }
-        ;}, $$31.$$s = self, $$31.$$arity = -2, $$31));
-      }, $Lazy_find_all$30.$$arity = 0);
-      $alias(self, "flat_map", "collect_concat");
+        ;}, -2);
+      }, 0);
       
-      Opal.def(self, '$grep', $Lazy_grep$32 = function $$grep(pattern) {
-        var $iter = $Lazy_grep$32.$$p, block = $iter || nil, $$33, $$34, self = this;
+      $def(self, '$grep', function $$grep(pattern) {
+        var block = $$grep.$$p || nil, self = this;
 
-        if ($iter) $Lazy_grep$32.$$p = null;
-        
+        delete $$grep.$$p;
         
-        if ($iter) $Lazy_grep$32.$$p = null;;
+        ;
         if ($truthy(block)) {
-          return $send($$($nesting, 'Lazy'), 'new', [self, nil], ($$33 = function(enum$, $a){var self = $$33.$$s == null ? this : $$33.$$s, $post_args, args;
+          return $send($$('Lazy'), 'new', [self, nil], function $$11(enum$, $a){var $post_args, args;
 
             
             
-            if (enum$ == null) {
-              enum$ = nil;
-            };
+            if (enum$ == null) enum$ = nil;;
             
-            $post_args = Opal.slice.call(arguments, 1, arguments.length);
+            $post_args = Opal.slice.call(arguments, 1);
             
             args = $post_args;;
             
-            var param = $$($nesting, 'Opal').$destructure(args),
+            var param = $Opal.$destructure(args),
                 value = pattern['$==='](param);
 
             if ($truthy(value)) {
-              value = Opal.yield1(block, param);
+              value = $yield1(block, param);
 
-              enum$.$yield(Opal.yield1(block, param));
+              enum$.$yield($yield1(block, param));
             }
-          ;}, $$33.$$s = self, $$33.$$arity = -2, $$33))
+          ;}, -2)
         } else {
-          return $send($$($nesting, 'Lazy'), 'new', [self, nil], ($$34 = function(enum$, $a){var self = $$34.$$s == null ? this : $$34.$$s, $post_args, args;
+          return $send($$('Lazy'), 'new', [self, nil], function $$12(enum$, $a){var $post_args, args;
 
             
             
-            if (enum$ == null) {
-              enum$ = nil;
-            };
+            if (enum$ == null) enum$ = nil;;
             
-            $post_args = Opal.slice.call(arguments, 1, arguments.length);
+            $post_args = Opal.slice.call(arguments, 1);
             
             args = $post_args;;
             
-            var param = $$($nesting, 'Opal').$destructure(args),
+            var param = $Opal.$destructure(args),
                 value = pattern['$==='](param);
 
             if ($truthy(value)) {
               enum$.$yield(param);
             }
-          ;}, $$34.$$s = self, $$34.$$arity = -2, $$34))
+          ;}, -2)
         };
-      }, $Lazy_grep$32.$$arity = 1);
-      $alias(self, "map", "collect");
-      $alias(self, "select", "find_all");
+      }, 1);
       
-      Opal.def(self, '$reject', $Lazy_reject$35 = function $$reject() {
-        var $iter = $Lazy_reject$35.$$p, block = $iter || nil, $$36, self = this;
+      $def(self, '$reject', function $$reject() {
+        var block = $$reject.$$p || nil, self = this;
 
-        if ($iter) $Lazy_reject$35.$$p = null;
-        
+        delete $$reject.$$p;
         
-        if ($iter) $Lazy_reject$35.$$p = null;;
-        if ($truthy(block)) {
-        } else {
-          self.$raise($$($nesting, 'ArgumentError'), "tried to call lazy reject without a block")
+        ;
+        if (!$truthy(block)) {
+          $Kernel.$raise($$$('ArgumentError'), "tried to call lazy reject without a block")
         };
-        return $send($$($nesting, 'Lazy'), 'new', [self, nil], ($$36 = function(enum$, $a){var self = $$36.$$s == null ? this : $$36.$$s, $post_args, args;
+        return $send($$('Lazy'), 'new', [self, nil], function $$13(enum$, $a){var $post_args, args;
 
           
           
-          if (enum$ == null) {
-            enum$ = nil;
-          };
+          if (enum$ == null) enum$ = nil;;
           
-          $post_args = Opal.slice.call(arguments, 1, arguments.length);
+          $post_args = Opal.slice.call(arguments, 1);
           
           args = $post_args;;
           
-          var value = Opal.yieldX(block, args);
+          var value = $yieldX(block, args);
 
-          if ($falsy(value)) {
-            $send(enum$, 'yield', Opal.to_a(args));
+          if (!$truthy(value)) {
+            $send(enum$, 'yield', $to_a(args));
           }
-        ;}, $$36.$$s = self, $$36.$$arity = -2, $$36));
-      }, $Lazy_reject$35.$$arity = 0);
+        ;}, -2);
+      }, 0);
       
-      Opal.def(self, '$take', $Lazy_take$37 = function $$take(n) {
-        var $$38, self = this, current_size = nil, set_size = nil, taken = nil;
+      $def(self, '$take', function $$take(n) {
+        var self = this, current_size = nil, set_size = nil, taken = nil;
 
         
-        n = $coerce_to(n, $$($nesting, 'Integer'), 'to_int');
+        n = $coerce_to(n, $$$('Integer'), 'to_int');
         if ($truthy($rb_lt(n, 0))) {
-          self.$raise($$($nesting, 'ArgumentError'), "attempt to take negative size")};
+          $Kernel.$raise($$$('ArgumentError'), "attempt to take negative size")
+        };
         current_size = self.$enumerator_size();
-        set_size = (function() {if ($truthy($$($nesting, 'Integer')['$==='](current_size))) {
-          if ($truthy($rb_lt(n, current_size))) {
-            return n
-          } else {
-            return current_size
-          }
-        } else {
-          return current_size
-        }; return nil; })();
+        set_size = ($eqeqeq($$$('Integer'), current_size) ? (($truthy($rb_lt(n, current_size)) ? (n) : (current_size))) : (current_size));
         taken = 0;
-        return $send($$($nesting, 'Lazy'), 'new', [self, set_size], ($$38 = function(enum$, $a){var self = $$38.$$s == null ? this : $$38.$$s, $post_args, args;
+        return $send($$('Lazy'), 'new', [self, set_size], function $$14(enum$, $a){var $post_args, args;
 
           
           
-          if (enum$ == null) {
-            enum$ = nil;
-          };
+          if (enum$ == null) enum$ = nil;;
           
-          $post_args = Opal.slice.call(arguments, 1, arguments.length);
+          $post_args = Opal.slice.call(arguments, 1);
           
           args = $post_args;;
           if ($truthy($rb_lt(taken, n))) {
             
-            $send(enum$, 'yield', Opal.to_a(args));
+            $send(enum$, 'yield', $to_a(args));
             return (taken = $rb_plus(taken, 1));
           } else {
-            return self.$raise($$($nesting, 'StopLazyError'))
-          };}, $$38.$$s = self, $$38.$$arity = -2, $$38));
-      }, $Lazy_take$37.$$arity = 1);
+            return $Kernel.$raise($$('StopLazyError'))
+          };}, -2);
+      }, 1);
       
-      Opal.def(self, '$take_while', $Lazy_take_while$39 = function $$take_while() {
-        var $iter = $Lazy_take_while$39.$$p, block = $iter || nil, $$40, self = this;
+      $def(self, '$take_while', function $$take_while() {
+        var block = $$take_while.$$p || nil, self = this;
 
-        if ($iter) $Lazy_take_while$39.$$p = null;
-        
+        delete $$take_while.$$p;
         
-        if ($iter) $Lazy_take_while$39.$$p = null;;
-        if ($truthy(block)) {
-        } else {
-          self.$raise($$($nesting, 'ArgumentError'), "tried to call lazy take_while without a block")
+        ;
+        if (!$truthy(block)) {
+          $Kernel.$raise($$$('ArgumentError'), "tried to call lazy take_while without a block")
         };
-        return $send($$($nesting, 'Lazy'), 'new', [self, nil], ($$40 = function(enum$, $a){var self = $$40.$$s == null ? this : $$40.$$s, $post_args, args;
+        return $send($$('Lazy'), 'new', [self, nil], function $$15(enum$, $a){var $post_args, args;
 
           
           
-          if (enum$ == null) {
-            enum$ = nil;
-          };
+          if (enum$ == null) enum$ = nil;;
           
-          $post_args = Opal.slice.call(arguments, 1, arguments.length);
+          $post_args = Opal.slice.call(arguments, 1);
           
           args = $post_args;;
           
-          var value = Opal.yieldX(block, args);
+          var value = $yieldX(block, args);
 
           if ($truthy(value)) {
-            $send(enum$, 'yield', Opal.to_a(args));
+            $send(enum$, 'yield', $to_a(args));
           }
           else {
-            self.$raise($$($nesting, 'StopLazyError'));
+            $Kernel.$raise($$('StopLazyError'));
           }
-        ;}, $$40.$$s = self, $$40.$$arity = -2, $$40));
-      }, $Lazy_take_while$39.$$arity = 0);
-      $alias(self, "to_enum", "enum_for");
-      return (Opal.def(self, '$inspect', $Lazy_inspect$41 = function $$inspect() {
+        ;}, -2);
+      }, 0);
+      
+      $def(self, '$inspect', function $$inspect() {
         var self = this;
 
-        return "" + "#<" + (self.$class()) + ": " + (self.enumerator.$inspect()) + ">"
-      }, $Lazy_inspect$41.$$arity = 0), nil) && 'inspect';
-    })($nesting[0], self, $nesting);
-    return (function($base, $super, $parent_nesting) {
-      var self = $klass($base, $super, 'ArithmeticSequence');
+        return "#<" + (self.$class()) + ": " + (self.enumerator.$inspect()) + ">"
+      }, 0);
+      $alias(self, "force", "to_a");
+      $alias(self, "filter", "find_all");
+      $alias(self, "flat_map", "collect_concat");
+      $alias(self, "map", "collect");
+      $alias(self, "select", "find_all");
+      return $alias(self, "to_enum", "enum_for");
+    })(self, self, $nesting)
+  })('::', null, $nesting)
+};
 
-      var $nesting = [self].concat($parent_nesting);
+Opal.modules["corelib/enumerator/yielder"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $breaker = Opal.breaker, $klass = Opal.klass, $def = Opal.def, $send = Opal.send, $to_a = Opal.to_a;
 
-      return nil
-    })($nesting[0], self, $nesting);
-  })($nesting[0], null, $nesting);
+  Opal.add_stubs('yield,proc');
+  return (function($base, $super, $parent_nesting) {
+    var self = $klass($base, $super, 'Enumerator');
+
+    var $nesting = [self].concat($parent_nesting);
+
+    return (function($base, $super) {
+      var self = $klass($base, $super, 'Yielder');
+
+      var $proto = self.$$prototype;
+
+      $proto.block = nil;
+      
+      
+      $def(self, '$initialize', function $$initialize() {
+        var block = $$initialize.$$p || nil, self = this;
+
+        delete $$initialize.$$p;
+        
+        ;
+        self.block = block;
+        return self;
+      }, 0);
+      
+      $def(self, '$yield', function $Yielder_yield$1($a) {
+        var $post_args, values, self = this;
+
+        
+        
+        $post_args = Opal.slice.call(arguments);
+        
+        values = $post_args;;
+        
+        var value = Opal.yieldX(self.block, values);
+
+        if (value === $breaker) {
+          throw $breaker;
+        }
+
+        return value;
+      ;
+      }, -1);
+      
+      $def(self, '$<<', function $Yielder_$lt$lt$2(value) {
+        var self = this;
+
+        
+        self.$yield(value);
+        return self;
+      }, 1);
+      return $def(self, '$to_proc', function $$to_proc() {
+        var self = this;
+
+        return $send(self, 'proc', [], function $$3($a){var $post_args, values, self = $$3.$$s == null ? this : $$3.$$s;
+
+          
+          
+          $post_args = Opal.slice.call(arguments);
+          
+          values = $post_args;;
+          return $send(self, 'yield', $to_a(values));}, {$$arity: -1, $$s: self})
+      }, 0);
+    })($nesting[0], null)
+  })($nesting[0], null, $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/numeric"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_times(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs * rhs : lhs['$*'](rhs);
-  }
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  function $rb_divide(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs / rhs : lhs['$/'](rhs);
-  }
-  function $rb_ge(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs >= rhs : lhs['$>='](rhs);
-  }
-  function $rb_le(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs <= rhs : lhs['$<='](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $truthy = Opal.truthy, $alias = Opal.alias, $hash2 = Opal.hash2, $send = Opal.send;
+Opal.modules["corelib/enumerator"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $slice = Opal.slice, $coerce_to = Opal.coerce_to, $klass = Opal.klass, $defs = Opal.defs, $truthy = Opal.truthy, $send = Opal.send, $not = Opal.not, $def = Opal.def, $rb_plus = Opal.rb_plus, $to_a = Opal.to_a, $Opal = Opal.Opal, $send2 = Opal.send2, $find_super = Opal.find_super, $rb_ge = Opal.rb_ge, $Kernel = Opal.Kernel, $rb_le = Opal.rb_le, $alias = Opal.alias;
+
+  Opal.add_stubs('require,include,allocate,new,to_proc,!,respond_to?,empty?,nil?,+,class,__send__,call,enum_for,size,destructure,map,>=,length,raise,[],peek_values,<=,next_values,inspect,any?,autoload');
+  
+  self.$require("corelib/enumerable");
+  return (function($base, $super, $parent_nesting) {
+    var self = $klass($base, $super, 'Enumerator');
+
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
+
+    $proto.size = $proto.args = $proto.object = $proto.method = $proto.values = $proto.cursor = nil;
+    
+    self.$include($$$('Enumerable'));
+    self.$$prototype.$$is_enumerator = true;
+    $defs(self, '$for', function $Enumerator_for$1(object, $a, $b) {
+      var block = $Enumerator_for$1.$$p || nil, $post_args, method, args, self = this;
+
+      delete $Enumerator_for$1.$$p;
+      
+      ;
+      
+      $post_args = Opal.slice.call(arguments, 1);
+      
+      if ($post_args.length > 0) method = $post_args.shift();
+      if (method == null) method = "each";;
+      
+      args = $post_args;;
+      
+      var obj = self.$allocate();
+
+      obj.object = object;
+      obj.size   = block;
+      obj.method = method;
+      obj.args   = args;
+      obj.cursor = 0;
+
+      return obj;
+    ;
+    }, -2);
+    
+    $def(self, '$initialize', function $$initialize($a) {
+      var block = $$initialize.$$p || nil, $post_args, $rest_arg, self = this;
+
+      delete $$initialize.$$p;
+      
+      ;
+      
+      $post_args = Opal.slice.call(arguments);
+      
+      $rest_arg = $post_args;;
+      self.cursor = 0;
+      if ($truthy(block)) {
+        
+        self.object = $send($$('Generator'), 'new', [], block.$to_proc());
+        self.method = "each";
+        self.args = [];
+        self.size = arguments[0] || nil;
+        if (($truthy(self.size) && ($not(self.size['$respond_to?']("call"))))) {
+          return (self.size = $coerce_to(self.size, $$$('Integer'), 'to_int'))
+        } else {
+          return nil
+        };
+      } else {
+        
+        self.object = arguments[0];
+        self.method = arguments[1] || "each";
+        self.args = $slice.call(arguments, 2);
+        return (self.size = nil);
+      };
+    }, -1);
+    
+    $def(self, '$each', function $$each($a) {
+      var block = $$each.$$p || nil, $post_args, args, self = this;
+
+      delete $$each.$$p;
+      
+      ;
+      
+      $post_args = Opal.slice.call(arguments);
+      
+      args = $post_args;;
+      if (($truthy(block['$nil?']()) && ($truthy(args['$empty?']())))) {
+        return self
+      };
+      args = $rb_plus(self.args, args);
+      if ($truthy(block['$nil?']())) {
+        return $send(self.$class(), 'new', [self.object, self.method].concat($to_a(args)))
+      };
+      return $send(self.object, '__send__', [self.method].concat($to_a(args)), block.$to_proc());
+    }, -1);
+    
+    $def(self, '$size', function $$size() {
+      var self = this;
+
+      if ($truthy(self.size['$respond_to?']("call"))) {
+        return $send(self.size, 'call', $to_a(self.args))
+      } else {
+        return self.size
+      }
+    }, 0);
+    
+    $def(self, '$with_index', function $$with_index(offset) {
+      var block = $$with_index.$$p || nil, self = this;
+
+      delete $$with_index.$$p;
+      
+      ;
+      
+      if (offset == null) offset = 0;;
+      offset = ($truthy(offset) ? ($coerce_to(offset, $$$('Integer'), 'to_int')) : (0));
+      if (!$truthy(block)) {
+        return $send(self, 'enum_for', ["with_index", offset], function $$2(){var self = $$2.$$s == null ? this : $$2.$$s;
+
+          return self.$size()}, {$$arity: 0, $$s: self})
+      };
+      
+      var result, index = offset;
+
+      self.$each.$$p = function() {
+        var param = $Opal.$destructure(arguments),
+            value = block(param, index);
+
+        index++;
+
+        return value;
+      }
+
+      return self.$each();
+    ;
+    }, -1);
+    
+    $def(self, '$each_with_index', function $$each_with_index() {
+      var block = $$each_with_index.$$p || nil, self = this;
+
+      delete $$each_with_index.$$p;
+      
+      ;
+      if (!(block !== nil)) {
+        return $send(self, 'enum_for', ["each_with_index"], function $$3(){var self = $$3.$$s == null ? this : $$3.$$s;
+
+          return self.$size()}, {$$arity: 0, $$s: self})
+      };
+      $send2(self, $find_super(self, 'each_with_index', $$each_with_index, false, true), 'each_with_index', [], block);
+      return self.object;
+    }, 0);
+    
+    $def(self, '$rewind', function $$rewind() {
+      var self = this;
+
+      
+      self.cursor = 0;
+      return self;
+    }, 0);
+    
+    $def(self, '$peek_values', function $$peek_values() {
+      var self = this, $ret_or_1 = nil;
+
+      
+      self.values = ($truthy(($ret_or_1 = self.values)) ? ($ret_or_1) : ($send(self, 'map', [], function $$4($a){var $post_args, i;
+
+        
+        
+        $post_args = Opal.slice.call(arguments);
+        
+        i = $post_args;;
+        return i;}, -1)));
+      if ($truthy($rb_ge(self.cursor, self.values.$length()))) {
+        $Kernel.$raise($$$('StopIteration'), "iteration reached an end")
+      };
+      return self.values['$[]'](self.cursor);
+    }, 0);
+    
+    $def(self, '$peek', function $$peek() {
+      var self = this, values = nil;
+
+      
+      values = self.$peek_values();
+      if ($truthy($rb_le(values.$length(), 1))) {
+        return values['$[]'](0)
+      } else {
+        return values
+      };
+    }, 0);
+    
+    $def(self, '$next_values', function $$next_values() {
+      var self = this, out = nil;
+
+      
+      out = self.$peek_values();
+      self.cursor = $rb_plus(self.cursor, 1);
+      return out;
+    }, 0);
+    
+    $def(self, '$next', function $$next() {
+      var self = this, values = nil;
+
+      
+      values = self.$next_values();
+      if ($truthy($rb_le(values.$length(), 1))) {
+        return values['$[]'](0)
+      } else {
+        return values
+      };
+    }, 0);
+    
+    $def(self, '$feed', function $$feed(arg) {
+      var self = this;
+
+      return self.$raise($$('NotImplementedError'), "Opal doesn't support Enumerator#feed")
+    }, 1);
+    
+    $def(self, '$+', function $Enumerator_$plus$5(other) {
+      var self = this;
+
+      return $$$($$$('Enumerator'), 'Chain').$new(self, other)
+    }, 1);
+    
+    $def(self, '$inspect', function $$inspect() {
+      var self = this, result = nil;
+
+      
+      result = "#<" + (self.$class()) + ": " + (self.object.$inspect()) + ":" + (self.method);
+      if ($truthy(self.args['$any?']())) {
+        result = $rb_plus(result, "(" + (self.args.$inspect()['$[]']($$$('Range').$new(1, -2))) + ")")
+      };
+      return $rb_plus(result, ">");
+    }, 0);
+    $alias(self, "with_object", "each_with_object");
+    self.$autoload("ArithmeticSequence", "corelib/enumerator/arithmetic_sequence");
+    self.$autoload("Chain", "corelib/enumerator/chain");
+    self.$autoload("Generator", "corelib/enumerator/generator");
+    self.$autoload("Lazy", "corelib/enumerator/lazy");
+    return self.$autoload("Yielder", "corelib/enumerator/yielder");
+  })('::', null, $nesting);
+};
+
+Opal.modules["corelib/numeric"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $truthy = Opal.truthy, $Kernel = Opal.Kernel, $def = Opal.def, $to_ary = Opal.to_ary, $eqeqeq = Opal.eqeqeq, $rb_minus = Opal.rb_minus, $rb_times = Opal.rb_times, $rb_lt = Opal.rb_lt, $eqeq = Opal.eqeq, $rb_divide = Opal.rb_divide, $Opal = Opal.Opal, $hash2 = Opal.hash2, $not = Opal.not, $send = Opal.send, $rb_ge = Opal.rb_ge, $rb_le = Opal.rb_le, $rb_plus = Opal.rb_plus, $rb_gt = Opal.rb_gt, $alias = Opal.alias;
 
-  Opal.add_stubs(['$require', '$include', '$instance_of?', '$class', '$Float', '$respond_to?', '$coerce', '$__send__', '$===', '$raise', '$equal?', '$-', '$*', '$div', '$<', '$-@', '$ceil', '$to_f', '$denominator', '$to_r', '$==', '$floor', '$/', '$%', '$Complex', '$zero?', '$numerator', '$abs', '$arg', '$coerce_to!', '$round', '$<=>', '$compare', '$enum_for', '$to_proc', '$negative?', '$>=', '$<=', '$+', '$to_i', '$truncate', '$>']);
+  Opal.add_stubs('require,include,instance_of?,class,Float,respond_to?,coerce,__send__,===,raise,equal?,-,*,div,<,-@,ceil,to_f,denominator,to_r,==,floor,/,%,Complex,zero?,numerator,abs,arg,coerce_to!,round,<=>,compare,is_a?,!,new,enum_for,to_proc,negative?,>=,<=,+,to_i,truncate,>');
   
   self.$require("corelib/comparable");
-  return (function($base, $super, $parent_nesting) {
+  return (function($base, $super) {
     var self = $klass($base, $super, 'Numeric');
 
-    var $nesting = [self].concat($parent_nesting), $Numeric_coerce$1, $Numeric___coerced__$2, $Numeric_$lt_eq_gt$3, $Numeric_$plus$$4, $Numeric_$minus$$5, $Numeric_$percent$6, $Numeric_abs$7, $Numeric_abs2$8, $Numeric_angle$9, $Numeric_ceil$10, $Numeric_conj$11, $Numeric_denominator$12, $Numeric_div$13, $Numeric_divmod$14, $Numeric_fdiv$15, $Numeric_floor$16, $Numeric_i$17, $Numeric_imag$18, $Numeric_integer$ques$19, $Numeric_nonzero$ques$20, $Numeric_numerator$21, $Numeric_polar$22, $Numeric_quo$23, $Numeric_real$24, $Numeric_real$ques$25, $Numeric_rect$26, $Numeric_round$27, $Numeric_step$28, $Numeric_to_c$29, $Numeric_to_int$30, $Numeric_truncate$31, $Numeric_zero$ques$32, $Numeric_positive$ques$33, $Numeric_negative$ques$34, $Numeric_dup$35, $Numeric_clone$36, $Numeric_finite$ques$37, $Numeric_infinite$ques$38;
-
     
-    self.$include($$($nesting, 'Comparable'));
     
-    Opal.def(self, '$coerce', $Numeric_coerce$1 = function $$coerce(other) {
+    self.$include($$$('Comparable'));
+    
+    $def(self, '$coerce', function $$coerce(other) {
       var self = this;
 
       
       if ($truthy(other['$instance_of?'](self.$class()))) {
-        return [other, self]};
-      return [self.$Float(other), self.$Float(self)];
-    }, $Numeric_coerce$1.$$arity = 1);
+        return [other, self]
+      };
+      return [$Kernel.$Float(other), $Kernel.$Float(self)];
+    }, 1);
     
-    Opal.def(self, '$__coerced__', $Numeric___coerced__$2 = function $$__coerced__(method, other) {
-      var $a, $b, self = this, a = nil, b = nil, $case = nil;
+    $def(self, '$__coerced__', function $$__coerced__(method, other) {
+      var $a, $b, self = this, a = nil, b = nil, $ret_or_1 = nil;
 
       if ($truthy(other['$respond_to?']("coerce"))) {
         
-        $b = other.$coerce(self), $a = Opal.to_ary($b), (a = ($a[0] == null ? nil : $a[0])), (b = ($a[1] == null ? nil : $a[1])), $b;
+        $b = other.$coerce(self), $a = $to_ary($b), (a = ($a[0] == null ? nil : $a[0])), (b = ($a[1] == null ? nil : $a[1])), $b;
         return a.$__send__(method, b);
+      } else if (($eqeqeq("+", ($ret_or_1 = method)) || (($eqeqeq("-", $ret_or_1) || (($eqeqeq("*", $ret_or_1) || (($eqeqeq("/", $ret_or_1) || (($eqeqeq("%", $ret_or_1) || (($eqeqeq("&", $ret_or_1) || (($eqeqeq("|", $ret_or_1) || (($eqeqeq("^", $ret_or_1) || ($eqeqeq("**", $ret_or_1)))))))))))))))))) {
+        return $Kernel.$raise($$$('TypeError'), "" + (other.$class()) + " can't be coerced into Numeric")
+      } else if (($eqeqeq(">", $ret_or_1) || (($eqeqeq(">=", $ret_or_1) || (($eqeqeq("<", $ret_or_1) || (($eqeqeq("<=", $ret_or_1) || ($eqeqeq("<=>", $ret_or_1)))))))))) {
+        return $Kernel.$raise($$$('ArgumentError'), "comparison of " + (self.$class()) + " with " + (other.$class()) + " failed")
       } else {
-        return (function() {$case = method;
-        if ("+"['$===']($case) || "-"['$===']($case) || "*"['$===']($case) || "/"['$===']($case) || "%"['$===']($case) || "&"['$===']($case) || "|"['$===']($case) || "^"['$===']($case) || "**"['$===']($case)) {return self.$raise($$($nesting, 'TypeError'), "" + (other.$class()) + " can't be coerced into Numeric")}
-        else if (">"['$===']($case) || ">="['$===']($case) || "<"['$===']($case) || "<="['$===']($case) || "<=>"['$===']($case)) {return self.$raise($$($nesting, 'ArgumentError'), "" + "comparison of " + (self.$class()) + " with " + (other.$class()) + " failed")}
-        else { return nil }})()
+        return nil
       }
-    }, $Numeric___coerced__$2.$$arity = 2);
+    }, 2);
     
-    Opal.def(self, '$<=>', $Numeric_$lt_eq_gt$3 = function(other) {
+    $def(self, '$<=>', function $Numeric_$lt_eq_gt$1(other) {
       var self = this;
 
       
       if ($truthy(self['$equal?'](other))) {
-        return 0};
+        return 0
+      };
       return nil;
-    }, $Numeric_$lt_eq_gt$3.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$+@', $Numeric_$plus$$4 = function() {
+    $def(self, '$+@', function $Numeric_$plus$$2() {
       var self = this;
 
       return self
-    }, $Numeric_$plus$$4.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$-@', $Numeric_$minus$$5 = function() {
+    $def(self, '$-@', function $Numeric_$minus$$3() {
       var self = this;
 
       return $rb_minus(0, self)
-    }, $Numeric_$minus$$5.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$%', $Numeric_$percent$6 = function(other) {
+    $def(self, '$%', function $Numeric_$percent$4(other) {
       var self = this;
 
       return $rb_minus(self, $rb_times(other, self.$div(other)))
-    }, $Numeric_$percent$6.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$abs', $Numeric_abs$7 = function $$abs() {
+    $def(self, '$abs', function $$abs() {
       var self = this;
 
       if ($rb_lt(self, 0)) {
@@ -12232,103 +12374,93 @@ Opal.modules["corelib/numeric"] = function(Opal) {
       } else {
         return self
       }
-    }, $Numeric_abs$7.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$abs2', $Numeric_abs2$8 = function $$abs2() {
+    $def(self, '$abs2', function $$abs2() {
       var self = this;
 
       return $rb_times(self, self)
-    }, $Numeric_abs2$8.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$angle', $Numeric_angle$9 = function $$angle() {
+    $def(self, '$angle', function $$angle() {
       var self = this;
 
       if ($rb_lt(self, 0)) {
-        return $$$($$($nesting, 'Math'), 'PI')
+        return $$$($$$('Math'), 'PI')
       } else {
         return 0
       }
-    }, $Numeric_angle$9.$$arity = 0);
-    $alias(self, "arg", "angle");
+    }, 0);
     
-    Opal.def(self, '$ceil', $Numeric_ceil$10 = function $$ceil(ndigits) {
+    $def(self, '$ceil', function $$ceil(ndigits) {
       var self = this;
 
       
       
-      if (ndigits == null) {
-        ndigits = 0;
-      };
+      if (ndigits == null) ndigits = 0;;
       return self.$to_f().$ceil(ndigits);
-    }, $Numeric_ceil$10.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$conj', $Numeric_conj$11 = function $$conj() {
+    $def(self, '$conj', function $$conj() {
       var self = this;
 
       return self
-    }, $Numeric_conj$11.$$arity = 0);
-    $alias(self, "conjugate", "conj");
+    }, 0);
     
-    Opal.def(self, '$denominator', $Numeric_denominator$12 = function $$denominator() {
+    $def(self, '$denominator', function $$denominator() {
       var self = this;
 
       return self.$to_r().$denominator()
-    }, $Numeric_denominator$12.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$div', $Numeric_div$13 = function $$div(other) {
+    $def(self, '$div', function $$div(other) {
       var self = this;
 
       
-      if (other['$=='](0)) {
-        self.$raise($$($nesting, 'ZeroDivisionError'), "divided by o")};
+      if ($eqeq(other, 0)) {
+        $Kernel.$raise($$$('ZeroDivisionError'), "divided by o")
+      };
       return $rb_divide(self, other).$floor();
-    }, $Numeric_div$13.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$divmod', $Numeric_divmod$14 = function $$divmod(other) {
+    $def(self, '$divmod', function $$divmod(other) {
       var self = this;
 
       return [self.$div(other), self['$%'](other)]
-    }, $Numeric_divmod$14.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$fdiv', $Numeric_fdiv$15 = function $$fdiv(other) {
+    $def(self, '$fdiv', function $$fdiv(other) {
       var self = this;
 
       return $rb_divide(self.$to_f(), other)
-    }, $Numeric_fdiv$15.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$floor', $Numeric_floor$16 = function $$floor(ndigits) {
+    $def(self, '$floor', function $$floor(ndigits) {
       var self = this;
 
       
       
-      if (ndigits == null) {
-        ndigits = 0;
-      };
+      if (ndigits == null) ndigits = 0;;
       return self.$to_f().$floor(ndigits);
-    }, $Numeric_floor$16.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$i', $Numeric_i$17 = function $$i() {
+    $def(self, '$i', function $$i() {
       var self = this;
 
-      return self.$Complex(0, self)
-    }, $Numeric_i$17.$$arity = 0);
+      return $Kernel.$Complex(0, self)
+    }, 0);
     
-    Opal.def(self, '$imag', $Numeric_imag$18 = function $$imag() {
-      var self = this;
-
+    $def(self, '$imag', function $$imag() {
+      
       return 0
-    }, $Numeric_imag$18.$$arity = 0);
-    $alias(self, "imaginary", "imag");
+    }, 0);
     
-    Opal.def(self, '$integer?', $Numeric_integer$ques$19 = function() {
-      var self = this;
-
+    $def(self, '$integer?', function $Numeric_integer$ques$5() {
+      
       return false
-    }, $Numeric_integer$ques$19.$$arity = 0);
-    $alias(self, "magnitude", "abs");
-    $alias(self, "modulo", "%");
+    }, 0);
     
-    Opal.def(self, '$nonzero?', $Numeric_nonzero$ques$20 = function() {
+    $def(self, '$nonzero?', function $Numeric_nonzero$ques$6() {
       var self = this;
 
       if ($truthy(self['$zero?']())) {
@@ -12336,63 +12468,59 @@ Opal.modules["corelib/numeric"] = function(Opal) {
       } else {
         return self
       }
-    }, $Numeric_nonzero$ques$20.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$numerator', $Numeric_numerator$21 = function $$numerator() {
+    $def(self, '$numerator', function $$numerator() {
       var self = this;
 
       return self.$to_r().$numerator()
-    }, $Numeric_numerator$21.$$arity = 0);
-    $alias(self, "phase", "arg");
+    }, 0);
     
-    Opal.def(self, '$polar', $Numeric_polar$22 = function $$polar() {
+    $def(self, '$polar', function $$polar() {
       var self = this;
 
       return [self.$abs(), self.$arg()]
-    }, $Numeric_polar$22.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$quo', $Numeric_quo$23 = function $$quo(other) {
+    $def(self, '$quo', function $$quo(other) {
       var self = this;
 
-      return $rb_divide($$($nesting, 'Opal')['$coerce_to!'](self, $$($nesting, 'Rational'), "to_r"), other)
-    }, $Numeric_quo$23.$$arity = 1);
+      return $rb_divide($Opal['$coerce_to!'](self, $$$('Rational'), "to_r"), other)
+    }, 1);
     
-    Opal.def(self, '$real', $Numeric_real$24 = function $$real() {
+    $def(self, '$real', function $$real() {
       var self = this;
 
       return self
-    }, $Numeric_real$24.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$real?', $Numeric_real$ques$25 = function() {
-      var self = this;
-
+    $def(self, '$real?', function $Numeric_real$ques$7() {
+      
       return true
-    }, $Numeric_real$ques$25.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$rect', $Numeric_rect$26 = function $$rect() {
+    $def(self, '$rect', function $$rect() {
       var self = this;
 
       return [self, 0]
-    }, $Numeric_rect$26.$$arity = 0);
-    $alias(self, "rectangular", "rect");
+    }, 0);
     
-    Opal.def(self, '$round', $Numeric_round$27 = function $$round(digits) {
+    $def(self, '$round', function $$round(digits) {
       var self = this;
 
       
       ;
       return self.$to_f().$round(digits);
-    }, $Numeric_round$27.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$step', $Numeric_step$28 = function $$step($a, $b, $c) {
-      var $iter = $Numeric_step$28.$$p, block = $iter || nil, $post_args, $kwargs, limit, step, to, by, $d, self = this, counter = nil;
+    $def(self, '$step', function $$step($a, $b, $c) {
+      var block = $$step.$$p || nil, $post_args, $kwargs, limit, step, to, by, $d, self = this, counter = nil;
 
-      if ($iter) $Numeric_step$28.$$p = null;
-      
+      delete $$step.$$p;
       
-      if ($iter) $Numeric_step$28.$$p = null;;
+      ;
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       $kwargs = Opal.extract_kwargs($post_args);
       
@@ -12402,26 +12530,20 @@ Opal.modules["corelib/numeric"] = function(Opal) {
         throw Opal.ArgumentError.$new('expected kwargs');
       };
       
-      if ($post_args.length > 0) {
-        limit = $post_args[0];
-        $post_args.splice(0, 1);
-      };
+      if ($post_args.length > 0) limit = $post_args.shift();;
       
-      if ($post_args.length > 0) {
-        step = $post_args[0];
-        $post_args.splice(0, 1);
-      };
+      if ($post_args.length > 0) step = $post_args.shift();;
       
       to = $kwargs.$$smap["to"];;
       
       by = $kwargs.$$smap["by"];;
       
       if (limit !== undefined && to !== undefined) {
-        self.$raise($$($nesting, 'ArgumentError'), "to is given twice")
+        $Kernel.$raise($$$('ArgumentError'), "to is given twice")
       }
 
       if (step !== undefined && by !== undefined) {
-        self.$raise($$($nesting, 'ArgumentError'), "step is given twice")
+        $Kernel.$raise($$$('ArgumentError'), "step is given twice")
       }
 
       if (to !== undefined) {
@@ -12438,11 +12560,11 @@ Opal.modules["corelib/numeric"] = function(Opal) {
 
       function validateParameters() {
         if (step === nil) {
-          self.$raise($$($nesting, 'TypeError'), "step must be numeric")
+          $Kernel.$raise($$$('TypeError'), "step must be numeric")
         }
 
         if (step != null && step['$=='](0)) {
-          self.$raise($$($nesting, 'ArgumentError'), "step can't be 0")
+          $Kernel.$raise($$$('ArgumentError'), "step can't be 0")
         }
 
         if (step === nil || step == null) {
@@ -12452,14 +12574,14 @@ Opal.modules["corelib/numeric"] = function(Opal) {
         var sign = step['$<=>'](0);
 
         if (sign === nil) {
-          self.$raise($$($nesting, 'ArgumentError'), "" + "0 can't be coerced into " + (step.$class()))
+          $Kernel.$raise($$$('ArgumentError'), "0 can't be coerced into " + (step.$class()))
         }
 
         if (limit === nil || limit == null) {
-          limit = sign > 0 ? $$$($$($nesting, 'Float'), 'INFINITY') : $$$($$($nesting, 'Float'), 'INFINITY')['$-@']();
+          limit = sign > 0 ? $$$($$$('Float'), 'INFINITY') : $$$($$$('Float'), 'INFINITY')['$-@']();
         }
 
-        $$($nesting, 'Opal').$compare(self, limit)
+        $Opal.$compare(self, limit)
       }
 
       function stepFloatSize() {
@@ -12469,7 +12591,7 @@ Opal.modules["corelib/numeric"] = function(Opal) {
           return 1;
         } else {
           var abs = Math.abs, floor = Math.floor,
-              err = (abs(self) + abs(limit) + abs(limit - self)) / abs(step) * $$$($$($nesting, 'Float'), 'EPSILON');
+              err = (abs(self) + abs(limit) + abs(limit - self)) / abs(step) * $$$($$$('Float'), 'EPSILON');
 
           if (err === Infinity || err === -Infinity) {
             return 0;
@@ -12504,9 +12626,12 @@ Opal.modules["corelib/numeric"] = function(Opal) {
       }
 
     ;
-      if ((block !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["step", limit, step], (stepSize).$to_proc())
+      if (!(block !== nil)) {
+        if ((($not(limit) || ($truthy(limit['$is_a?']($$$('Numeric'))))) && (($not(step) || ($truthy(step['$is_a?']($$$('Numeric')))))))) {
+          return $$$($$$('Enumerator'), 'ArithmeticSequence').$new([limit, step, ($truthy(to) ? ("to: ") : nil), ($truthy(by) ? ("by: ") : nil)], self)
+        } else {
+          return $send(self, 'enum_for', ["step", limit, step], (stepSize).$to_proc())
+        }
       };
       
       validateParameters();
@@ -12568,56 +12693,54 @@ Opal.modules["corelib/numeric"] = function(Opal) {
         Opal.yield1(block, counter);
         counter = $rb_plus(counter, step);
       };
-    }, $Numeric_step$28.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$to_c', $Numeric_to_c$29 = function $$to_c() {
+    $def(self, '$to_c', function $$to_c() {
       var self = this;
 
-      return self.$Complex(self, 0)
-    }, $Numeric_to_c$29.$$arity = 0);
+      return $Kernel.$Complex(self, 0)
+    }, 0);
     
-    Opal.def(self, '$to_int', $Numeric_to_int$30 = function $$to_int() {
+    $def(self, '$to_int', function $$to_int() {
       var self = this;
 
       return self.$to_i()
-    }, $Numeric_to_int$30.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$truncate', $Numeric_truncate$31 = function $$truncate(ndigits) {
+    $def(self, '$truncate', function $$truncate(ndigits) {
       var self = this;
 
       
       
-      if (ndigits == null) {
-        ndigits = 0;
-      };
+      if (ndigits == null) ndigits = 0;;
       return self.$to_f().$truncate(ndigits);
-    }, $Numeric_truncate$31.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$zero?', $Numeric_zero$ques$32 = function() {
+    $def(self, '$zero?', function $Numeric_zero$ques$8() {
       var self = this;
 
       return self['$=='](0)
-    }, $Numeric_zero$ques$32.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$positive?', $Numeric_positive$ques$33 = function() {
+    $def(self, '$positive?', function $Numeric_positive$ques$9() {
       var self = this;
 
       return $rb_gt(self, 0)
-    }, $Numeric_positive$ques$33.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$negative?', $Numeric_negative$ques$34 = function() {
+    $def(self, '$negative?', function $Numeric_negative$ques$10() {
       var self = this;
 
       return $rb_lt(self, 0)
-    }, $Numeric_negative$ques$34.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$dup', $Numeric_dup$35 = function $$dup() {
+    $def(self, '$dup', function $$dup() {
       var self = this;
 
       return self
-    }, $Numeric_dup$35.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$clone', $Numeric_clone$36 = function $$clone($kwargs) {
+    $def(self, '$clone', function $$clone($kwargs) {
       var freeze, self = this;
 
       
@@ -12629,56 +12752,44 @@ Opal.modules["corelib/numeric"] = function(Opal) {
       };
       
       freeze = $kwargs.$$smap["freeze"];
-      if (freeze == null) {
-        freeze = true
-      };
+      if (freeze == null) freeze = true;
       return self;
-    }, $Numeric_clone$36.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$finite?', $Numeric_finite$ques$37 = function() {
-      var self = this;
-
+    $def(self, '$finite?', function $Numeric_finite$ques$11() {
+      
       return true
-    }, $Numeric_finite$ques$37.$$arity = 0);
-    return (Opal.def(self, '$infinite?', $Numeric_infinite$ques$38 = function() {
-      var self = this;
-
+    }, 0);
+    
+    $def(self, '$infinite?', function $Numeric_infinite$ques$12() {
+      
       return nil
-    }, $Numeric_infinite$ques$38.$$arity = 0), nil) && 'infinite?';
-  })($nesting[0], null, $nesting);
+    }, 0);
+    $alias(self, "arg", "angle");
+    $alias(self, "conjugate", "conj");
+    $alias(self, "imaginary", "imag");
+    $alias(self, "magnitude", "abs");
+    $alias(self, "modulo", "%");
+    $alias(self, "phase", "arg");
+    return $alias(self, "rectangular", "rect");
+  })('::', null);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/array"] = function(Opal) {
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_times(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs * rhs : lhs['$*'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_ge(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs >= rhs : lhs['$>='](rhs);
-  }
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $truthy = Opal.truthy, $falsy = Opal.falsy, $hash_ids = Opal.hash_ids, $yield1 = Opal.yield1, $hash_get = Opal.hash_get, $hash_put = Opal.hash_put, $hash_delete = Opal.hash_delete, $coerce_to = Opal.coerce_to, $respond_to = Opal.respond_to, $klass = Opal.klass, $hash2 = Opal.hash2, $send2 = Opal.send2, $find_super = Opal.find_super, $send = Opal.send, $gvars = Opal.gvars, $alias = Opal.alias;
+Opal.modules["corelib/array"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $truthy = Opal.truthy, $falsy = Opal.falsy, $hash_ids = Opal.hash_ids, $yield1 = Opal.yield1, $hash_get = Opal.hash_get, $hash_put = Opal.hash_put, $hash_delete = Opal.hash_delete, $coerce_to = Opal.coerce_to, $respond_to = Opal.respond_to, $klass = Opal.klass, $defs = Opal.defs, $Kernel = Opal.Kernel, $def = Opal.def, $Opal = Opal.Opal, $eqeqeq = Opal.eqeqeq, $hash2 = Opal.hash2, $send2 = Opal.send2, $find_super = Opal.find_super, $send = Opal.send, $rb_gt = Opal.rb_gt, $rb_times = Opal.rb_times, $eqeq = Opal.eqeq, $rb_minus = Opal.rb_minus, $to_a = Opal.to_a, $to_ary = Opal.to_ary, $gvars = Opal.gvars, $rb_ge = Opal.rb_ge, $rb_lt = Opal.rb_lt, $neqeq = Opal.neqeq, $alias = Opal.alias;
 
-  Opal.add_stubs(['$require', '$include', '$to_a', '$warn', '$raise', '$replace', '$respond_to?', '$to_ary', '$coerce_to?', '$===', '$join', '$to_str', '$hash', '$<=>', '$==', '$object_id', '$inspect', '$enum_for', '$class', '$bsearch_index', '$to_proc', '$nil?', '$coerce_to!', '$>', '$*', '$enumerator_size', '$empty?', '$size', '$map', '$equal?', '$dup', '$each', '$reduce', '$-', '$[]', '$dig', '$eql?', '$length', '$exclude_end?', '$flatten', '$__id__', '$&', '$to_s', '$new', '$max', '$min', '$!', '$>=', '$**', '$delete_if', '$reverse', '$rotate', '$rand', '$at', '$keep_if', '$shuffle!', '$<', '$sort', '$sort_by', '$!=', '$times', '$[]=', '$<<', '$uniq', '$|', '$values', '$is_a?', '$last', '$first', '$upto', '$reject', '$pristine', '$singleton_class']);
+  Opal.add_stubs('require,include,to_a,warn,raise,replace,respond_to?,to_ary,coerce_to?,===,join,to_str,hash,<=>,==,object_id,inspect,enum_for,class,bsearch_index,to_proc,nil?,coerce_to!,>,*,enumerator_size,empty?,size,map,equal?,dup,each,reduce,-,[],dig,eql?,length,exclude_end?,flatten,__id__,&,!,intersection,to_s,new,item,max,min,>=,**,delete_if,reverse,rotate,rand,at,keep_if,shuffle!,<,sort,sort_by,!=,times,[]=,<<,uniq,|,values,is_a?,end,begin,upto,reject,pristine,singleton_class');
   
   self.$require("corelib/enumerable");
   self.$require("corelib/numeric");
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Array');
 
-    var $nesting = [self].concat($parent_nesting), $Array_$$$1, $Array_initialize$2, $Array_try_convert$3, $Array_$$4, $Array_$$5, $Array_$$6, $Array_$plus$7, $Array_$minus$8, $Array_$lt$lt$9, $Array_$lt_eq_gt$10, $Array_$eq_eq$11, $Array_$$$12, $Array_$$$eq$13, $Array_any$ques$14, $Array_assoc$15, $Array_at$16, $Array_bsearch_index$17, $Array_bsearch$18, $Array_cycle$19, $Array_clear$21, $Array_count$22, $Array_initialize_copy$23, $Array_collect$24, $Array_collect$excl$26, $Array_combination$28, $Array_repeated_combination$30, $Array_compact$32, $Array_compact$excl$33, $Array_concat$34, $Array_delete$37, $Array_delete_at$38, $Array_delete_if$39, $Array_difference$41, $Array_dig$43, $Array_drop$44, $Array_dup$45, $Array_each$46, $Array_each_index$48, $Array_empty$ques$50, $Array_eql$ques$51, $Array_fetch$52, $Array_fill$53, $Array_first$54, $Array_flatten$55, $Array_flatten$excl$56, $Array_hash$57, $Array_include$ques$58, $Array_index$59, $Array_insert$60, $Array_inspect$61, $Array_intersection$62, $Array_join$64, $Array_keep_if$65, $Array_last$67, $Array_length$68, $Array_max$69, $Array_min$70, $Array_permutation$71, $Array_repeated_permutation$73, $Array_pop$75, $Array_product$76, $Array_push$77, $Array_rassoc$78, $Array_reject$79, $Array_reject$excl$81, $Array_replace$83, $Array_reverse$84, $Array_reverse$excl$85, $Array_reverse_each$86, $Array_rindex$88, $Array_rotate$89, $Array_rotate$excl$90, $Array_sample$93, $Array_select$94, $Array_select$excl$96, $Array_shift$98, $Array_shuffle$99, $Array_shuffle$excl$100, $Array_slice$excl$101, $Array_sort$102, $Array_sort$excl$103, $Array_sort_by$excl$104, $Array_take$106, $Array_take_while$107, $Array_to_a$108, $Array_to_ary$109, $Array_to_h$110, $Array_transpose$111, $Array_union$114, $Array_uniq$116, $Array_uniq$excl$117, $Array_unshift$118, $Array_values_at$119, $Array_zip$122, $Array_inherited$123, $Array_instance_variables$124, $Array_pack$126;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
-    self.$include($$($nesting, 'Enumerable'));
-    Opal.defineProperty(self.$$prototype, '$$is_array', true);
+    self.$include($$$('Enumerable'));
+    Opal.prop(self.$$prototype, '$$is_array', true);
     
     // Recent versions of V8 (> 7.1) only use an optimized implementation when Array.prototype is unmodified.
     // For instance, "array-splice.tq" has a "fast path" (ExtractFastJSArray, defined in "src/codegen/code-stub-assembler.cc")
@@ -12739,43 +12850,38 @@ Opal.modules["corelib/array"] = function(Opal) {
       if (raised) throw raised;
     }
   ;
-    Opal.defs(self, '$[]', $Array_$$$1 = function($a) {
+    $defs(self, '$[]', function $Array_$$$1($a) {
       var $post_args, objects, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       objects = $post_args;;
       return toArraySubclass(objects, self);;
-    }, $Array_$$$1.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$initialize', $Array_initialize$2 = function $$initialize(size, obj) {
-      var $iter = $Array_initialize$2.$$p, block = $iter || nil, self = this;
+    $def(self, '$initialize', function $$initialize(size, obj) {
+      var block = $$initialize.$$p || nil, self = this;
 
-      if ($iter) $Array_initialize$2.$$p = null;
+      delete $$initialize.$$p;
       
+      ;
       
-      if ($iter) $Array_initialize$2.$$p = null;;
-      
-      if (size == null) {
-        size = nil;
-      };
+      if (size == null) size = nil;;
       
-      if (obj == null) {
-        obj = nil;
-      };
+      if (obj == null) obj = nil;;
       
       if (obj !== nil && block !== nil) {
-        self.$warn("warning: block supersedes default value argument")
+        $Kernel.$warn("warning: block supersedes default value argument")
       }
 
-      if (size > $$$($$($nesting, 'Integer'), 'MAX')) {
-        self.$raise($$($nesting, 'ArgumentError'), "array size too big")
+      if (size > $$$($$$('Integer'), 'MAX')) {
+        $Kernel.$raise($$$('ArgumentError'), "array size too big")
       }
 
       if (arguments.length > 2) {
-        self.$raise($$($nesting, 'ArgumentError'), "" + "wrong number of arguments (" + (arguments.length) + " for 0..2)")
+        $Kernel.$raise($$$('ArgumentError'), "wrong number of arguments (" + (arguments.length) + " for 0..2)")
       }
 
       if (arguments.length === 0) {
@@ -12793,10 +12899,10 @@ Opal.modules["corelib/array"] = function(Opal) {
         }
       }
 
-      size = $coerce_to(size, $$($nesting, 'Integer'), 'to_int');
+      size = $coerce_to(size, $$$('Integer'), 'to_int');
 
       if (size < 0) {
-        self.$raise($$($nesting, 'ArgumentError'), "negative array size")
+        $Kernel.$raise($$$('ArgumentError'), "negative array size")
       }
 
       self.splice(0, self.length);
@@ -12816,22 +12922,17 @@ Opal.modules["corelib/array"] = function(Opal) {
 
       return self;
     ;
-    }, $Array_initialize$2.$$arity = -1);
-    Opal.defs(self, '$try_convert', $Array_try_convert$3 = function $$try_convert(obj) {
-      var self = this;
-
-      return $$($nesting, 'Opal')['$coerce_to?'](obj, $$($nesting, 'Array'), "to_ary")
-    }, $Array_try_convert$3.$$arity = 1);
+    }, -1);
+    $defs(self, '$try_convert', function $$try_convert(obj) {
+      
+      return $Opal['$coerce_to?'](obj, $$$('Array'), "to_ary")
+    }, 1);
     
-    Opal.def(self, '$&', $Array_$$4 = function(other) {
+    $def(self, '$&', function $Array_$$2(other) {
       var self = this;
 
       
-      other = (function() {if ($truthy($$($nesting, 'Array')['$==='](other))) {
-        return other.$to_a()
-      } else {
-        return ($coerce_to(other, $$($nesting, 'Array'), 'to_ary')).$to_a()
-      }; return nil; })();
+      other = ($eqeqeq($$$('Array'), other) ? (other.$to_a()) : (($coerce_to(other, $$$('Array'), 'to_ary')).$to_a()));
       
       var result = [], hash = $hash2([], {}), i, length, item;
 
@@ -12848,17 +12949,13 @@ Opal.modules["corelib/array"] = function(Opal) {
 
       return result;
     ;
-    }, $Array_$$4.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$|', $Array_$$5 = function(other) {
+    $def(self, '$|', function $Array_$$3(other) {
       var self = this;
 
       
-      other = (function() {if ($truthy($$($nesting, 'Array')['$==='](other))) {
-        return other.$to_a()
-      } else {
-        return ($coerce_to(other, $$($nesting, 'Array'), 'to_ary')).$to_a()
-      }; return nil; })();
+      other = ($eqeqeq($$$('Array'), other) ? (other.$to_a()) : (($coerce_to(other, $$$('Array'), 'to_ary')).$to_a()));
       
       var hash = $hash2([], {}), i, length, item;
 
@@ -12872,17 +12969,19 @@ Opal.modules["corelib/array"] = function(Opal) {
 
       return hash.$keys();
     ;
-    }, $Array_$$5.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$*', $Array_$$6 = function(other) {
+    $def(self, '$*', function $Array_$$4(other) {
       var self = this;
 
       
       if ($truthy(other['$respond_to?']("to_str"))) {
-        return self.$join(other.$to_str())};
-      other = $coerce_to(other, $$($nesting, 'Integer'), 'to_int');
+        return self.$join(other.$to_str())
+      };
+      other = $coerce_to(other, $$$('Integer'), 'to_int');
       if ($truthy(other < 0)) {
-        self.$raise($$($nesting, 'ArgumentError'), "negative argument")};
+        $Kernel.$raise($$$('ArgumentError'), "negative argument")
+      };
       
       var result = [],
           converted = self.$to_a();
@@ -12893,33 +12992,27 @@ Opal.modules["corelib/array"] = function(Opal) {
 
       return result;
     ;
-    }, $Array_$$6.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$+', $Array_$plus$7 = function(other) {
+    $def(self, '$+', function $Array_$plus$5(other) {
       var self = this;
 
       
-      other = (function() {if ($truthy($$($nesting, 'Array')['$==='](other))) {
-        return other.$to_a()
-      } else {
-        return ($coerce_to(other, $$($nesting, 'Array'), 'to_ary')).$to_a()
-      }; return nil; })();
+      other = ($eqeqeq($$$('Array'), other) ? (other.$to_a()) : (($coerce_to(other, $$$('Array'), 'to_ary')).$to_a()));
       return self.concat(other);;
-    }, $Array_$plus$7.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$-', $Array_$minus$8 = function(other) {
+    $def(self, '$-', function $Array_$minus$6(other) {
       var self = this;
 
       
-      other = (function() {if ($truthy($$($nesting, 'Array')['$==='](other))) {
-        return other.$to_a()
-      } else {
-        return ($coerce_to(other, $$($nesting, 'Array'), 'to_ary')).$to_a()
-      }; return nil; })();
+      other = ($eqeqeq($$$('Array'), other) ? (other.$to_a()) : (($coerce_to(other, $$$('Array'), 'to_ary')).$to_a()));
       if ($truthy(self.length === 0)) {
-        return []};
+        return []
+      };
       if ($truthy(other.length === 0)) {
-        return self.slice()};
+        return self.slice()
+      };
       
       var result = [], hash = $hash2([], {}), i, length, item;
 
@@ -12936,21 +13029,21 @@ Opal.modules["corelib/array"] = function(Opal) {
 
       return result;
     ;
-    }, $Array_$minus$8.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$<<', $Array_$lt$lt$9 = function(object) {
+    $def(self, '$<<', function $Array_$lt$lt$7(object) {
       var self = this;
 
       
       self.push(object);
       return self;
-    }, $Array_$lt$lt$9.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$<=>', $Array_$lt_eq_gt$10 = function(other) {
+    $def(self, '$<=>', function $Array_$lt_eq_gt$8(other) {
       var self = this;
 
       
-      if ($truthy($$($nesting, 'Array')['$==='](other))) {
+      if ($eqeqeq($$$('Array'), other)) {
         other = other.$to_a()
       } else if ($truthy(other['$respond_to?']("to_ary"))) {
         other = other.$to_ary().$to_a()
@@ -12974,9 +13067,9 @@ Opal.modules["corelib/array"] = function(Opal) {
 
       return (self.length)['$<=>'](other.length);
     ;
-    }, $Array_$lt_eq_gt$10.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$==', $Array_$eq_eq$11 = function(other) {
+    $def(self, '$==', function $Array_$eq_eq$9(other) {
       var self = this;
 
       
@@ -13031,15 +13124,15 @@ Opal.modules["corelib/array"] = function(Opal) {
 
       return _eqeq(self, other);
     
-    }, $Array_$eq_eq$11.$$arity = 1);
+    }, 1);
     
     function $array_slice_range(self, index) {
       var size = self.length,
           exclude, from, to, result;
 
       exclude = index.excl;
-      from    = $coerce_to(index.begin, Opal.Integer, 'to_int');
-      to      = $coerce_to(index.end, Opal.Integer, 'to_int');
+      from    = index.begin === nil ? 0 : $coerce_to(index.begin, Opal.Integer, 'to_int');
+      to      = index.end === nil ? -1 : $coerce_to(index.end, Opal.Integer, 'to_int');
 
       if (from < 0) {
         from += size;
@@ -13049,6 +13142,10 @@ Opal.modules["corelib/array"] = function(Opal) {
         }
       }
 
+      if (index.excl_rev && index.begin !== nil) {
+        from += 1;
+      }
+
       if (from > size) {
         return nil;
       }
@@ -13061,7 +13158,7 @@ Opal.modules["corelib/array"] = function(Opal) {
         }
       }
 
-      if (!exclude) {
+      if (!exclude || index.end === nil) {
         to += 1;
       }
 
@@ -13069,6 +13166,30 @@ Opal.modules["corelib/array"] = function(Opal) {
       return result;
     }
 
+    function $array_slice_arithmetic_seq(self, index) {
+      var array, out = [], i = 0, pseudorange;
+
+      if (index.step < 0) {
+        pseudorange = {
+          begin: index.range.end,
+          end: index.range.begin,
+          excl: false,
+          excl_rev: index.range.excl
+        };
+        array = $array_slice_range(self, pseudorange).$reverse();
+      }
+      else {
+        array = $array_slice_range(self, index.range);
+      }
+
+      while (i < array.length) {
+        out.push(array[i]);
+        i += Math.abs(index.step);
+      }
+
+      return out;
+    }
+
     function $array_slice_index_length(self, index, length) {
       var size = self.length,
           exclude, from, to, result;
@@ -13103,7 +13224,7 @@ Opal.modules["corelib/array"] = function(Opal) {
     }
   ;
     
-    Opal.def(self, '$[]', $Array_$$$12 = function(index, length) {
+    $def(self, '$[]', function $Array_$$$10(index, length) {
       var self = this;
 
       
@@ -13112,37 +13233,41 @@ Opal.modules["corelib/array"] = function(Opal) {
       if (index.$$is_range) {
         return $array_slice_range(self, index);
       }
+      else if (index.$$is_arithmetic_seq) {
+        return $array_slice_arithmetic_seq(self, index);
+      }
       else {
         return $array_slice_index_length(self, index, length);
       }
     ;
-    }, $Array_$$$12.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$[]=', $Array_$$$eq$13 = function(index, value, extra) {
+    $def(self, '$[]=', function $Array_$$$eq$11(index, value, extra) {
       var self = this, data = nil, length = nil;
 
       
       ;
-            var i, size = self.length;;
-      if ($truthy($$($nesting, 'Range')['$==='](index))) {
-        
-        data = (function() {if ($truthy($$($nesting, 'Array')['$==='](value))) {
-          return value.$to_a()
-        } else if ($truthy(value['$respond_to?']("to_ary"))) {
-          return value.$to_ary().$to_a()
-        } else {
-          return [value]
-        }; return nil; })();
-        
+      data = nil;
+      
+      var i, size = self.length;
+
+      if (index.$$is_range) {
+        if (value.$$is_array)
+          data = value.$to_a();
+        else if (value['$respond_to?']("to_ary"))
+          data = value.$to_ary().$to_a();
+        else
+          data = [value];
+
         var exclude = index.excl,
-            from    = $coerce_to(index.begin, $$($nesting, 'Integer'), 'to_int'),
-            to      = $coerce_to(index.end, $$($nesting, 'Integer'), 'to_int');
+            from    = index.begin === nil ? 0 : $coerce_to(index.begin, Opal.Integer, 'to_int'),
+            to      = index.end === nil ? -1 : $coerce_to(index.end, Opal.Integer, 'to_int');
 
         if (from < 0) {
           from += size;
 
           if (from < 0) {
-            self.$raise($$($nesting, 'RangeError'), "" + (index.$inspect()) + " out of range");
+            $Kernel.$raise($$$('RangeError'), "" + (index.$inspect()) + " out of range");
           }
         }
 
@@ -13150,7 +13275,7 @@ Opal.modules["corelib/array"] = function(Opal) {
           to += size;
         }
 
-        if (!exclude) {
+        if (!exclude || index.end === nil) {
           to += 1;
         }
 
@@ -13168,40 +13293,37 @@ Opal.modules["corelib/array"] = function(Opal) {
         }
 
         return value;
-      ;
       } else {
-        
-        if ($truthy(extra === undefined)) {
-          length = 1
+        if (extra === undefined) {
+          (length = 1)
         } else {
-          
           length = value;
-          value = extra;
-          data = (function() {if ($truthy($$($nesting, 'Array')['$==='](value))) {
-            return value.$to_a()
-          } else if ($truthy(value['$respond_to?']("to_ary"))) {
-            return value.$to_ary().$to_a()
-          } else {
-            return [value]
-          }; return nil; })();
-        };
-        
+          value  = extra;
+
+          if (value.$$is_array)
+            data = value.$to_a();
+          else if (value['$respond_to?']("to_ary"))
+            data = value.$to_ary().$to_a();
+          else
+            data = [value];
+        }
+
         var old;
 
-        index  = $coerce_to(index, $$($nesting, 'Integer'), 'to_int');
-        length = $coerce_to(length, $$($nesting, 'Integer'), 'to_int');
+        index  = $coerce_to(index, $$$('Integer'), 'to_int');
+        length = $coerce_to(length, $$$('Integer'), 'to_int');
 
         if (index < 0) {
           old    = index;
           index += size;
 
           if (index < 0) {
-            self.$raise($$($nesting, 'IndexError'), "" + "index " + (old) + " too small for array; minimum " + (-self.length));
+            $Kernel.$raise($$$('IndexError'), "index " + (old) + " too small for array; minimum " + (-self.length));
           }
         }
 
         if (length < 0) {
-          self.$raise($$($nesting, 'IndexError'), "" + "negative length (" + (length) + ")")
+          $Kernel.$raise($$$('IndexError'), "negative length (" + (length) + ")")
         }
 
         if (index > size) {
@@ -13218,27 +13340,22 @@ Opal.modules["corelib/array"] = function(Opal) {
         }
 
         return value;
-      ;
-      };
-    }, $Array_$$$eq$13.$$arity = -3);
+      }
+    ;
+    }, -3);
     
-    Opal.def(self, '$any?', $Array_any$ques$14 = function(pattern) {
-      var $iter = $Array_any$ques$14.$$p, block = $iter || nil, self = this, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+    $def(self, '$any?', function $Array_any$ques$12(pattern) {
+      var block = $Array_any$ques$12.$$p || nil, self = this;
 
-      if ($iter) $Array_any$ques$14.$$p = null;
-      // Prepare super implicit arguments
-      for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-        $zuper[$zuper_i] = arguments[$zuper_i];
-      }
-      
+      delete $Array_any$ques$12.$$p;
       
-      if ($iter) $Array_any$ques$14.$$p = null;;
+      ;
       ;
       if (self.length === 0) return false;
-      return $send2(self, $find_super(self, 'any?', $Array_any$ques$14, false, true), 'any?', $zuper, $iter);
-    }, $Array_any$ques$14.$$arity = -1);
+      return $send2(self, $find_super(self, 'any?', $Array_any$ques$12, false, true), 'any?', [pattern], block);
+    }, -1);
     
-    Opal.def(self, '$assoc', $Array_assoc$15 = function $$assoc(object) {
+    $def(self, '$assoc', function $$assoc(object) {
       var self = this;
 
       
@@ -13250,13 +13367,13 @@ Opal.modules["corelib/array"] = function(Opal) {
 
       return nil;
     
-    }, $Array_assoc$15.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$at', $Array_at$16 = function $$at(index) {
+    $def(self, '$at', function $$at(index) {
       var self = this;
 
       
-      index = $coerce_to(index, $$($nesting, 'Integer'), 'to_int')
+      index = $coerce_to(index, $$$('Integer'), 'to_int')
 
       if (index < 0) {
         index += self.length;
@@ -13268,17 +13385,15 @@ Opal.modules["corelib/array"] = function(Opal) {
 
       return self[index];
     
-    }, $Array_at$16.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$bsearch_index', $Array_bsearch_index$17 = function $$bsearch_index() {
-      var $iter = $Array_bsearch_index$17.$$p, block = $iter || nil, self = this;
+    $def(self, '$bsearch_index', function $$bsearch_index() {
+      var block = $$bsearch_index.$$p || nil, self = this;
 
-      if ($iter) $Array_bsearch_index$17.$$p = null;
-      
+      delete $$bsearch_index.$$p;
       
-      if ($iter) $Array_bsearch_index$17.$$p = null;;
-      if ((block !== nil)) {
-      } else {
+      ;
+      if (!(block !== nil)) {
         return self.$enum_for("bsearch_index")
       };
       
@@ -13307,7 +13422,7 @@ Opal.modules["corelib/array"] = function(Opal) {
           smaller = (ret < 0);
         }
         else {
-          self.$raise($$($nesting, 'TypeError'), "" + "wrong argument type " + ((ret).$class()) + " (must be numeric, true, false or nil)")
+          $Kernel.$raise($$$('TypeError'), "wrong argument type " + ((ret).$class()) + " (must be numeric, true, false or nil)")
         }
 
         if (smaller) { max = mid; } else { min = mid + 1; }
@@ -13315,17 +13430,15 @@ Opal.modules["corelib/array"] = function(Opal) {
 
       return satisfied;
     ;
-    }, $Array_bsearch_index$17.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$bsearch', $Array_bsearch$18 = function $$bsearch() {
-      var $iter = $Array_bsearch$18.$$p, block = $iter || nil, self = this, index = nil;
+    $def(self, '$bsearch', function $$bsearch() {
+      var block = $$bsearch.$$p || nil, self = this, index = nil;
 
-      if ($iter) $Array_bsearch$18.$$p = null;
-      
+      delete $$bsearch.$$p;
       
-      if ($iter) $Array_bsearch$18.$$p = null;;
-      if ((block !== nil)) {
-      } else {
+      ;
+      if (!(block !== nil)) {
         return self.$enum_for("bsearch")
       };
       index = $send(self, 'bsearch_index', [], block.$to_proc());
@@ -13336,41 +13449,34 @@ Opal.modules["corelib/array"] = function(Opal) {
         return index;
       }
     ;
-    }, $Array_bsearch$18.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$cycle', $Array_cycle$19 = function $$cycle(n) {
-      var $iter = $Array_cycle$19.$$p, block = $iter || nil, $$20, self = this, $ret_or_1 = nil;
+    $def(self, '$cycle', function $$cycle(n) {
+      var block = $$cycle.$$p || nil, self = this;
 
-      if ($iter) $Array_cycle$19.$$p = null;
-      
+      delete $$cycle.$$p;
       
-      if ($iter) $Array_cycle$19.$$p = null;;
+      ;
       
-      if (n == null) {
-        n = nil;
-      };
-      if ((block !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["cycle", n], ($$20 = function(){var self = $$20.$$s == null ? this : $$20.$$s;
+      if (n == null) n = nil;;
+      if (!(block !== nil)) {
+        return $send(self, 'enum_for', ["cycle", n], function $$13(){var self = $$13.$$s == null ? this : $$13.$$s;
 
           if ($truthy(n['$nil?']())) {
-            return $$$($$($nesting, 'Float'), 'INFINITY')
+            return $$$($$$('Float'), 'INFINITY')
           } else {
             
-            n = $$($nesting, 'Opal')['$coerce_to!'](n, $$($nesting, 'Integer'), "to_int");
+            n = $Opal['$coerce_to!'](n, $$$('Integer'), "to_int");
             if ($truthy($rb_gt(n, 0))) {
               return $rb_times(self.$enumerator_size(), n)
             } else {
               return 0
             };
-          }}, $$20.$$s = self, $$20.$$arity = 0, $$20))
+          }}, {$$arity: 0, $$s: self})
+      };
+      if (($truthy(self['$empty?']()) || ($eqeq(n, 0)))) {
+        return nil
       };
-      if ($truthy((function() {if ($truthy(($ret_or_1 = self['$empty?']()))) {
-        return $ret_or_1
-      } else {
-        return n['$=='](0)
-      }; return nil; })())) {
-        return nil};
       
       var i, length, value;
 
@@ -13382,7 +13488,7 @@ Opal.modules["corelib/array"] = function(Opal) {
         }
       }
       else {
-        n = $$($nesting, 'Opal')['$coerce_to!'](n, $$($nesting, 'Integer'), "to_int");
+        n = $Opal['$coerce_to!'](n, $$$('Integer'), "to_int");
         if (n <= 0) {
           return self;
         }
@@ -13397,60 +13503,46 @@ Opal.modules["corelib/array"] = function(Opal) {
       }
     ;
       return self;
-    }, $Array_cycle$19.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$clear', $Array_clear$21 = function $$clear() {
+    $def(self, '$clear', function $$clear() {
       var self = this;
 
       
       self.splice(0, self.length);
       return self;
-    }, $Array_clear$21.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$count', $Array_count$22 = function $$count(object) {
-      var $iter = $Array_count$22.$$p, block = $iter || nil, self = this, $ret_or_2 = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+    $def(self, '$count', function $$count(object) {
+      var block = $$count.$$p || nil, self = this;
 
-      if ($iter) $Array_count$22.$$p = null;
-      // Prepare super implicit arguments
-      for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-        $zuper[$zuper_i] = arguments[$zuper_i];
-      }
-      
+      delete $$count.$$p;
       
-      if ($iter) $Array_count$22.$$p = null;;
-      
-      if (object == null) {
-        object = nil;
-      };
-      if ($truthy((function() {if ($truthy(($ret_or_2 = object))) {
-        return $ret_or_2
-      } else {
-        return block
-      }; return nil; })())) {
-        return $send2(self, $find_super(self, 'count', $Array_count$22, false, true), 'count', $zuper, $iter)
+      ;
+      ;
+      if (($truthy(object !== undefined) || ($truthy(block)))) {
+        return $send2(self, $find_super(self, 'count', $$count, false, true), 'count', [object], block)
       } else {
         return self.$size()
       };
-    }, $Array_count$22.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$initialize_copy', $Array_initialize_copy$23 = function $$initialize_copy(other) {
+    $def(self, '$initialize_copy', function $$initialize_copy(other) {
       var self = this;
 
       return self.$replace(other)
-    }, $Array_initialize_copy$23.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$collect', $Array_collect$24 = function $$collect() {
-      var $iter = $Array_collect$24.$$p, block = $iter || nil, $$25, self = this;
+    $def(self, '$collect', function $$collect() {
+      var block = $$collect.$$p || nil, self = this;
 
-      if ($iter) $Array_collect$24.$$p = null;
-      
+      delete $$collect.$$p;
       
-      if ($iter) $Array_collect$24.$$p = null;;
-      if ((block !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["collect"], ($$25 = function(){var self = $$25.$$s == null ? this : $$25.$$s;
+      ;
+      if (!(block !== nil)) {
+        return $send(self, 'enum_for', ["collect"], function $$14(){var self = $$14.$$s == null ? this : $$14.$$s;
 
-          return self.$size()}, $$25.$$s = self, $$25.$$arity = 0, $$25))
+          return self.$size()}, {$$arity: 0, $$s: self})
       };
       
       var result = [];
@@ -13462,20 +13554,18 @@ Opal.modules["corelib/array"] = function(Opal) {
 
       return result;
     ;
-    }, $Array_collect$24.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$collect!', $Array_collect$excl$26 = function() {
-      var $iter = $Array_collect$excl$26.$$p, block = $iter || nil, $$27, self = this;
+    $def(self, '$collect!', function $Array_collect$excl$15() {
+      var block = $Array_collect$excl$15.$$p || nil, self = this;
 
-      if ($iter) $Array_collect$excl$26.$$p = null;
-      
+      delete $Array_collect$excl$15.$$p;
       
-      if ($iter) $Array_collect$excl$26.$$p = null;;
-      if ((block !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["collect!"], ($$27 = function(){var self = $$27.$$s == null ? this : $$27.$$s;
+      ;
+      if (!(block !== nil)) {
+        return $send(self, 'enum_for', ["collect!"], function $$16(){var self = $$16.$$s == null ? this : $$16.$$s;
 
-          return self.$size()}, $$27.$$s = self, $$27.$$arity = 0, $$27))
+          return self.$size()}, {$$arity: 0, $$s: self})
       };
       
       for (var i = 0, length = self.length; i < length; i++) {
@@ -13484,7 +13574,7 @@ Opal.modules["corelib/array"] = function(Opal) {
       }
     ;
       return self;
-    }, $Array_collect$excl$26.$$arity = 0);
+    }, 0);
     
     function binomial_coefficient(n, k) {
       if (n === k || k === 0) {
@@ -13499,17 +13589,16 @@ Opal.modules["corelib/array"] = function(Opal) {
     }
   ;
     
-    Opal.def(self, '$combination', $Array_combination$28 = function $$combination(n) {
-      var $$29, $iter = $Array_combination$28.$$p, $yield = $iter || nil, self = this, num = nil;
+    $def(self, '$combination', function $$combination(n) {
+      var $yield = $$combination.$$p || nil, self = this, num = nil;
 
-      if ($iter) $Array_combination$28.$$p = null;
+      delete $$combination.$$p;
       
-      num = $$($nesting, 'Opal')['$coerce_to!'](n, $$($nesting, 'Integer'), "to_int");
-      if (($yield !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["combination", num], ($$29 = function(){var self = $$29.$$s == null ? this : $$29.$$s;
+      num = $Opal['$coerce_to!'](n, $$$('Integer'), "to_int");
+      if (!($yield !== nil)) {
+        return $send(self, 'enum_for', ["combination", num], function $$17(){var self = $$17.$$s == null ? this : $$17.$$s;
 
-          return binomial_coefficient(self.length, num)}, $$29.$$s = self, $$29.$$arity = 0, $$29))
+          return binomial_coefficient(self.length, num)}, {$$arity: 0, $$s: self})
       };
       
       var i, length, stack, chosen, lev, done, next;
@@ -13553,19 +13642,18 @@ Opal.modules["corelib/array"] = function(Opal) {
       }
     ;
       return self;
-    }, $Array_combination$28.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$repeated_combination', $Array_repeated_combination$30 = function $$repeated_combination(n) {
-      var $$31, $iter = $Array_repeated_combination$30.$$p, $yield = $iter || nil, self = this, num = nil;
+    $def(self, '$repeated_combination', function $$repeated_combination(n) {
+      var $yield = $$repeated_combination.$$p || nil, self = this, num = nil;
 
-      if ($iter) $Array_repeated_combination$30.$$p = null;
+      delete $$repeated_combination.$$p;
       
-      num = $$($nesting, 'Opal')['$coerce_to!'](n, $$($nesting, 'Integer'), "to_int");
-      if (($yield !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["repeated_combination", num], ($$31 = function(){var self = $$31.$$s == null ? this : $$31.$$s;
+      num = $Opal['$coerce_to!'](n, $$$('Integer'), "to_int");
+      if (!($yield !== nil)) {
+        return $send(self, 'enum_for', ["repeated_combination", num], function $$18(){var self = $$18.$$s == null ? this : $$18.$$s;
 
-          return binomial_coefficient(self.length + num - 1, num);}, $$31.$$s = self, $$31.$$arity = 0, $$31))
+          return binomial_coefficient(self.length + num - 1, num);}, {$$arity: 0, $$s: self})
       };
       
       function iterate(max, from, buffer, self) {
@@ -13586,9 +13674,9 @@ Opal.modules["corelib/array"] = function(Opal) {
       }
     ;
       return self;
-    }, $Array_repeated_combination$30.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$compact', $Array_compact$32 = function $$compact() {
+    $def(self, '$compact', function $$compact() {
       var self = this;
 
       
@@ -13602,9 +13690,9 @@ Opal.modules["corelib/array"] = function(Opal) {
 
       return result;
     
-    }, $Array_compact$32.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$compact!', $Array_compact$excl$33 = function() {
+    $def(self, '$compact!', function $Array_compact$excl$19() {
       var self = this;
 
       
@@ -13621,50 +13709,43 @@ Opal.modules["corelib/array"] = function(Opal) {
 
       return self.length === original ? nil : self;
     
-    }, $Array_compact$excl$33.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$concat', $Array_concat$34 = function $$concat($a) {
-      var $post_args, others, $$35, $$36, self = this;
+    $def(self, '$concat', function $$concat($a) {
+      var $post_args, others, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       others = $post_args;;
-      others = $send(others, 'map', [], ($$35 = function(other){var self = $$35.$$s == null ? this : $$35.$$s;
+      others = $send(others, 'map', [], function $$20(other){var self = $$20.$$s == null ? this : $$20.$$s;
 
         
         
-        if (other == null) {
-          other = nil;
-        };
-        other = (function() {if ($truthy($$($nesting, 'Array')['$==='](other))) {
-          return other.$to_a()
-        } else {
-          return ($coerce_to(other, $$($nesting, 'Array'), 'to_ary')).$to_a()
-        }; return nil; })();
+        if (other == null) other = nil;;
+        other = ($eqeqeq($$$('Array'), other) ? (other.$to_a()) : (($coerce_to(other, $$$('Array'), 'to_ary')).$to_a()));
         if ($truthy(other['$equal?'](self))) {
-          other = other.$dup()};
-        return other;}, $$35.$$s = self, $$35.$$arity = 1, $$35));
-      $send(others, 'each', [], ($$36 = function(other){var self = $$36.$$s == null ? this : $$36.$$s;
+          other = other.$dup()
+        };
+        return other;}, {$$arity: 1, $$s: self});
+      $send(others, 'each', [], function $$21(other){var self = $$21.$$s == null ? this : $$21.$$s;
 
         
         
-        if (other == null) {
-          other = nil;
-        };
+        if (other == null) other = nil;;
         
         for (var i = 0, length = other.length; i < length; i++) {
           self.push(other[i]);
         }
-      ;}, $$36.$$s = self, $$36.$$arity = 1, $$36));
+      ;}, {$$arity: 1, $$s: self});
       return self;
-    }, $Array_concat$34.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$delete', $Array_delete$37 = function(object) {
-      var $iter = $Array_delete$37.$$p, $yield = $iter || nil, self = this;
+    $def(self, '$delete', function $Array_delete$22(object) {
+      var $yield = $Array_delete$22.$$p || nil, self = this;
 
-      if ($iter) $Array_delete$37.$$p = null;
+      delete $Array_delete$22.$$p;
       
       var original = self.length;
 
@@ -13685,13 +13766,13 @@ Opal.modules["corelib/array"] = function(Opal) {
       }
       return object;
     
-    }, $Array_delete$37.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$delete_at', $Array_delete_at$38 = function $$delete_at(index) {
+    $def(self, '$delete_at', function $$delete_at(index) {
       var self = this;
 
       
-      index = $coerce_to(index, $$($nesting, 'Integer'), 'to_int');
+      index = $coerce_to(index, $$$('Integer'), 'to_int');
 
       if (index < 0) {
         index += self.length;
@@ -13707,53 +13788,46 @@ Opal.modules["corelib/array"] = function(Opal) {
 
       return result;
     
-    }, $Array_delete_at$38.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$delete_if', $Array_delete_if$39 = function $$delete_if() {
-      var $iter = $Array_delete_if$39.$$p, block = $iter || nil, $$40, self = this;
+    $def(self, '$delete_if', function $$delete_if() {
+      var block = $$delete_if.$$p || nil, self = this;
 
-      if ($iter) $Array_delete_if$39.$$p = null;
-      
+      delete $$delete_if.$$p;
       
-      if ($iter) $Array_delete_if$39.$$p = null;;
-      if ((block !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["delete_if"], ($$40 = function(){var self = $$40.$$s == null ? this : $$40.$$s;
+      ;
+      if (!(block !== nil)) {
+        return $send(self, 'enum_for', ["delete_if"], function $$23(){var self = $$23.$$s == null ? this : $$23.$$s;
 
-          return self.$size()}, $$40.$$s = self, $$40.$$arity = 0, $$40))
+          return self.$size()}, {$$arity: 0, $$s: self})
       };
       filterIf(self, $falsy, block);
       return self;
-    }, $Array_delete_if$39.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$difference', $Array_difference$41 = function $$difference($a) {
-      var $post_args, arrays, $$42, self = this;
+    $def(self, '$difference', function $$difference($a) {
+      var $post_args, arrays, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       arrays = $post_args;;
-      return $send(arrays, 'reduce', [self.$to_a().$dup()], ($$42 = function(a, b){var self = $$42.$$s == null ? this : $$42.$$s;
-
+      return $send(arrays, 'reduce', [self.$to_a().$dup()], function $$24(a, b){
         
         
-        if (a == null) {
-          a = nil;
-        };
+        if (a == null) a = nil;;
         
-        if (b == null) {
-          b = nil;
-        };
-        return $rb_minus(a, b);}, $$42.$$s = self, $$42.$$arity = 2, $$42));
-    }, $Array_difference$41.$$arity = -1);
+        if (b == null) b = nil;;
+        return $rb_minus(a, b);}, 2);
+    }, -1);
     
-    Opal.def(self, '$dig', $Array_dig$43 = function $$dig(idx, $a) {
+    $def(self, '$dig', function $$dig(idx, $a) {
       var $post_args, idxs, self = this, item = nil;
 
       
       
-      $post_args = Opal.slice.call(arguments, 1, arguments.length);
+      $post_args = Opal.slice.call(arguments, 1);
       
       idxs = $post_args;;
       item = self['$[]'](idx);
@@ -13762,33 +13836,30 @@ Opal.modules["corelib/array"] = function(Opal) {
         return item;
       }
     ;
-      if ($truthy(item['$respond_to?']("dig"))) {
-      } else {
-        self.$raise($$($nesting, 'TypeError'), "" + (item.$class()) + " does not have #dig method")
+      if (!$truthy(item['$respond_to?']("dig"))) {
+        $Kernel.$raise($$$('TypeError'), "" + (item.$class()) + " does not have #dig method")
       };
-      return $send(item, 'dig', Opal.to_a(idxs));
-    }, $Array_dig$43.$$arity = -2);
+      return $send(item, 'dig', $to_a(idxs));
+    }, -2);
     
-    Opal.def(self, '$drop', $Array_drop$44 = function $$drop(number) {
+    $def(self, '$drop', function $$drop(number) {
       var self = this;
 
       
+      number = $coerce_to(number, $$$('Integer'), 'to_int');
+
       if (number < 0) {
-        self.$raise($$($nesting, 'ArgumentError'))
+        $Kernel.$raise($$$('ArgumentError'))
       }
 
       return self.slice(number);
     
-    }, $Array_drop$44.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$dup', $Array_dup$45 = function $$dup() {
-      var $iter = $Array_dup$45.$$p, $yield = $iter || nil, self = this, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+    $def(self, '$dup', function $$dup() {
+      var $yield = $$dup.$$p || nil, self = this;
 
-      if ($iter) $Array_dup$45.$$p = null;
-      // Prepare super implicit arguments
-      for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-        $zuper[$zuper_i] = arguments[$zuper_i];
-      }
+      delete $$dup.$$p;
       
       
       if (self.$$class === Opal.Array &&
@@ -13798,21 +13869,19 @@ Opal.modules["corelib/array"] = function(Opal) {
         return self.slice(0);
       }
     ;
-      return $send2(self, $find_super(self, 'dup', $Array_dup$45, false, true), 'dup', $zuper, $iter);
-    }, $Array_dup$45.$$arity = 0);
+      return $send2(self, $find_super(self, 'dup', $$dup, false, true), 'dup', [], $yield);
+    }, 0);
     
-    Opal.def(self, '$each', $Array_each$46 = function $$each() {
-      var $iter = $Array_each$46.$$p, block = $iter || nil, $$47, self = this;
+    $def(self, '$each', function $$each() {
+      var block = $$each.$$p || nil, self = this;
 
-      if ($iter) $Array_each$46.$$p = null;
-      
+      delete $$each.$$p;
       
-      if ($iter) $Array_each$46.$$p = null;;
-      if ((block !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["each"], ($$47 = function(){var self = $$47.$$s == null ? this : $$47.$$s;
+      ;
+      if (!(block !== nil)) {
+        return $send(self, 'enum_for', ["each"], function $$25(){var self = $$25.$$s == null ? this : $$25.$$s;
 
-          return self.$size()}, $$47.$$s = self, $$47.$$arity = 0, $$47))
+          return self.$size()}, {$$arity: 0, $$s: self})
       };
       
       for (var i = 0, length = self.length; i < length; i++) {
@@ -13820,20 +13889,18 @@ Opal.modules["corelib/array"] = function(Opal) {
       }
     ;
       return self;
-    }, $Array_each$46.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$each_index', $Array_each_index$48 = function $$each_index() {
-      var $iter = $Array_each_index$48.$$p, block = $iter || nil, $$49, self = this;
+    $def(self, '$each_index', function $$each_index() {
+      var block = $$each_index.$$p || nil, self = this;
 
-      if ($iter) $Array_each_index$48.$$p = null;
-      
+      delete $$each_index.$$p;
       
-      if ($iter) $Array_each_index$48.$$p = null;;
-      if ((block !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["each_index"], ($$49 = function(){var self = $$49.$$s == null ? this : $$49.$$s;
+      ;
+      if (!(block !== nil)) {
+        return $send(self, 'enum_for', ["each_index"], function $$26(){var self = $$26.$$s == null ? this : $$26.$$s;
 
-          return self.$size()}, $$49.$$s = self, $$49.$$arity = 0, $$49))
+          return self.$size()}, {$$arity: 0, $$s: self})
       };
       
       for (var i = 0, length = self.length; i < length; i++) {
@@ -13841,15 +13908,15 @@ Opal.modules["corelib/array"] = function(Opal) {
       }
     ;
       return self;
-    }, $Array_each_index$48.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$empty?', $Array_empty$ques$50 = function() {
+    $def(self, '$empty?', function $Array_empty$ques$27() {
       var self = this;
 
       return self.length === 0;
-    }, $Array_empty$ques$50.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$eql?', $Array_eql$ques$51 = function(other) {
+    $def(self, '$eql?', function $Array_eql$ques$28(other) {
       var self = this;
 
       
@@ -13894,20 +13961,19 @@ Opal.modules["corelib/array"] = function(Opal) {
 
       return _eql(self, other);
     
-    }, $Array_eql$ques$51.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$fetch', $Array_fetch$52 = function $$fetch(index, defaults) {
-      var $iter = $Array_fetch$52.$$p, block = $iter || nil, self = this;
+    $def(self, '$fetch', function $$fetch(index, defaults) {
+      var block = $$fetch.$$p || nil, self = this;
 
-      if ($iter) $Array_fetch$52.$$p = null;
-      
+      delete $$fetch.$$p;
       
-      if ($iter) $Array_fetch$52.$$p = null;;
+      ;
       ;
       
       var original = index;
 
-      index = $coerce_to(index, $$($nesting, 'Integer'), 'to_int');
+      index = $coerce_to(index, $$$('Integer'), 'to_int');
 
       if (index < 0) {
         index += self.length;
@@ -13930,69 +13996,77 @@ Opal.modules["corelib/array"] = function(Opal) {
       }
 
       if (self.length === 0) {
-        self.$raise($$($nesting, 'IndexError'), "" + "index " + (original) + " outside of array bounds: 0...0")
+        $Kernel.$raise($$$('IndexError'), "index " + (original) + " outside of array bounds: 0...0")
       }
       else {
-        self.$raise($$($nesting, 'IndexError'), "" + "index " + (original) + " outside of array bounds: -" + (self.length) + "..." + (self.length));
+        $Kernel.$raise($$$('IndexError'), "index " + (original) + " outside of array bounds: -" + (self.length) + "..." + (self.length));
       }
     ;
-    }, $Array_fetch$52.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$fill', $Array_fill$53 = function $$fill($a) {
-      var $iter = $Array_fill$53.$$p, block = $iter || nil, $post_args, args, $b, $c, self = this, one = nil, two = nil, obj = nil, left = nil, right = nil;
+    $def(self, '$fill', function $$fill($a) {
+      var block = $$fill.$$p || nil, $post_args, args, $b, $c, self = this, one = nil, two = nil, obj = nil, left = nil, right = nil;
 
-      if ($iter) $Array_fill$53.$$p = null;
-      
+      delete $$fill.$$p;
       
-      if ($iter) $Array_fill$53.$$p = null;;
+      ;
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
             var i, length, value;;
       if ($truthy(block)) {
         
         if ($truthy(args.length > 2)) {
-          self.$raise($$($nesting, 'ArgumentError'), "" + "wrong number of arguments (" + (args.$length()) + " for 0..2)")};
-        $c = args, $b = Opal.to_ary($c), (one = ($b[0] == null ? nil : $b[0])), (two = ($b[1] == null ? nil : $b[1])), $c;
+          $Kernel.$raise($$$('ArgumentError'), "wrong number of arguments (" + (args.$length()) + " for 0..2)")
+        };
+        $c = args, $b = $to_ary($c), (one = ($b[0] == null ? nil : $b[0])), (two = ($b[1] == null ? nil : $b[1])), $c;
       } else {
         
         if ($truthy(args.length == 0)) {
-          self.$raise($$($nesting, 'ArgumentError'), "wrong number of arguments (0 for 1..3)")
+          $Kernel.$raise($$$('ArgumentError'), "wrong number of arguments (0 for 1..3)")
         } else if ($truthy(args.length > 3)) {
-          self.$raise($$($nesting, 'ArgumentError'), "" + "wrong number of arguments (" + (args.$length()) + " for 1..3)")};
-        $c = args, $b = Opal.to_ary($c), (obj = ($b[0] == null ? nil : $b[0])), (one = ($b[1] == null ? nil : $b[1])), (two = ($b[2] == null ? nil : $b[2])), $c;
+          $Kernel.$raise($$$('ArgumentError'), "wrong number of arguments (" + (args.$length()) + " for 1..3)")
+        };
+        $c = args, $b = $to_ary($c), (obj = ($b[0] == null ? nil : $b[0])), (one = ($b[1] == null ? nil : $b[1])), (two = ($b[2] == null ? nil : $b[2])), $c;
       };
-      if ($truthy($$($nesting, 'Range')['$==='](one))) {
+      if ($eqeqeq($$$('Range'), one)) {
         
         if ($truthy(two)) {
-          self.$raise($$($nesting, 'TypeError'), "length invalid with range")};
-        left = $coerce_to(one.begin, $$($nesting, 'Integer'), 'to_int');
+          $Kernel.$raise($$$('TypeError'), "length invalid with range")
+        };
+        left = one.begin === nil ? 0 : $coerce_to(one.begin, $$$('Integer'), 'to_int');
         if ($truthy(left < 0)) {
-          left += this.length};
+          left += this.length
+        };
         if ($truthy(left < 0)) {
-          self.$raise($$($nesting, 'RangeError'), "" + (one.$inspect()) + " out of range")};
-        right = $coerce_to(one.end, $$($nesting, 'Integer'), 'to_int');
+          $Kernel.$raise($$$('RangeError'), "" + (one.$inspect()) + " out of range")
+        };
+        right = one.end === nil ? -1 : $coerce_to(one.end, $$$('Integer'), 'to_int');
         if ($truthy(right < 0)) {
-          right += this.length};
-        if ($truthy(one['$exclude_end?']())) {
-        } else {
+          right += this.length
+        };
+        if (!$truthy(one['$exclude_end?']())) {
           right += 1
         };
         if ($truthy(right <= left)) {
-          return self};
+          return self
+        };
       } else if ($truthy(one)) {
         
-        left = $coerce_to(one, $$($nesting, 'Integer'), 'to_int');
+        left = $coerce_to(one, $$$('Integer'), 'to_int');
         if ($truthy(left < 0)) {
-          left += this.length};
+          left += this.length
+        };
         if ($truthy(left < 0)) {
-          left = 0};
+          left = 0
+        };
         if ($truthy(two)) {
           
-          right = $coerce_to(two, $$($nesting, 'Integer'), 'to_int');
+          right = $coerce_to(two, $$$('Integer'), 'to_int');
           if ($truthy(right == 0)) {
-            return self};
+            return self
+          };
           right += left;
         } else {
           right = this.length
@@ -14007,9 +14081,11 @@ Opal.modules["corelib/array"] = function(Opal) {
         for (i = this.length; i < right; i++) {
           self[i] = nil;
         }
+      
       };
       if ($truthy(right > this.length)) {
-        this.length = right};
+        this.length = right
+      };
       if ($truthy(block)) {
         
         for (length = this.length; left < right; left++) {
@@ -14025,9 +14101,9 @@ Opal.modules["corelib/array"] = function(Opal) {
       
       };
       return self;
-    }, $Array_fill$53.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$first', $Array_first$54 = function $$first(count) {
+    $def(self, '$first', function $$first(count) {
       var self = this;
 
       
@@ -14037,17 +14113,17 @@ Opal.modules["corelib/array"] = function(Opal) {
         return self.length === 0 ? nil : self[0];
       }
 
-      count = $coerce_to(count, $$($nesting, 'Integer'), 'to_int');
+      count = $coerce_to(count, $$$('Integer'), 'to_int');
 
       if (count < 0) {
-        self.$raise($$($nesting, 'ArgumentError'), "negative array size");
+        $Kernel.$raise($$$('ArgumentError'), "negative array size");
       }
 
       return self.slice(0, count);
     ;
-    }, $Array_first$54.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$flatten', $Array_flatten$55 = function $$flatten(level) {
+    $def(self, '$flatten', function $$flatten(level) {
       var self = this;
 
       
@@ -14076,11 +14152,11 @@ Opal.modules["corelib/array"] = function(Opal) {
           }
 
           if (!ary.$$is_array) {
-            self.$raise($$($nesting, 'TypeError'));
+            $Kernel.$raise($$$('TypeError'));
           }
 
           if (ary === self) {
-            self.$raise($$($nesting, 'ArgumentError'));
+            $Kernel.$raise($$$('ArgumentError'));
           }
 
           switch (level) {
@@ -14098,14 +14174,14 @@ Opal.modules["corelib/array"] = function(Opal) {
       }
 
       if (level !== undefined) {
-        level = $coerce_to(level, $$($nesting, 'Integer'), 'to_int');
+        level = $coerce_to(level, $$$('Integer'), 'to_int');
       }
 
       return _flatten(self, level);
     ;
-    }, $Array_flatten$55.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$flatten!', $Array_flatten$excl$56 = function(level) {
+    $def(self, '$flatten!', function $Array_flatten$excl$29(level) {
       var self = this;
 
       
@@ -14128,9 +14204,9 @@ Opal.modules["corelib/array"] = function(Opal) {
       self.$replace(flattened);
     ;
       return self;
-    }, $Array_flatten$excl$56.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$hash', $Array_hash$57 = function $$hash() {
+    $def(self, '$hash', function $$hash() {
       var self = this;
 
       
@@ -14170,9 +14246,9 @@ Opal.modules["corelib/array"] = function(Opal) {
         }
       }
     
-    }, $Array_hash$57.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$include?', $Array_include$ques$58 = function(member) {
+    $def(self, '$include?', function $Array_include$ques$30(member) {
       var self = this;
 
       
@@ -14184,15 +14260,14 @@ Opal.modules["corelib/array"] = function(Opal) {
 
       return false;
     
-    }, $Array_include$ques$58.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$index', $Array_index$59 = function $$index(object) {
-      var $iter = $Array_index$59.$$p, block = $iter || nil, self = this;
+    $def(self, '$index', function $$index(object) {
+      var block = $$index.$$p || nil, self = this;
 
-      if ($iter) $Array_index$59.$$p = null;
+      delete $$index.$$p;
       
-      
-      if ($iter) $Array_index$59.$$p = null;;
+      ;
       ;
       
       var i, length, value;
@@ -14223,25 +14298,25 @@ Opal.modules["corelib/array"] = function(Opal) {
 
       return nil;
     ;
-    }, $Array_index$59.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$insert', $Array_insert$60 = function $$insert(index, $a) {
+    $def(self, '$insert', function $$insert(index, $a) {
       var $post_args, objects, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 1, arguments.length);
+      $post_args = Opal.slice.call(arguments, 1);
       
       objects = $post_args;;
       
-      index = $coerce_to(index, $$($nesting, 'Integer'), 'to_int');
+      index = $coerce_to(index, $$$('Integer'), 'to_int');
 
       if (objects.length > 0) {
         if (index < 0) {
           index += self.length + 1;
 
           if (index < 0) {
-            self.$raise($$($nesting, 'IndexError'), "" + (index) + " is out of bounds");
+            $Kernel.$raise($$$('IndexError'), "" + (index) + " is out of bounds");
           }
         }
         if (index > self.length) {
@@ -14254,65 +14329,78 @@ Opal.modules["corelib/array"] = function(Opal) {
       }
     ;
       return self;
-    }, $Array_insert$60.$$arity = -2);
+    }, -2);
+    var inspect_stack = [];
     
-    Opal.def(self, '$inspect', $Array_inspect$61 = function $$inspect() {
+    $def(self, '$inspect', function $$inspect() {
       var self = this;
 
       
+      
       var result = [],
-          id     = self.$__id__();
+      id = self.$__id__(),
+      pushed = true;
+    ;
+      
+      return (function() { try {
+      
+      
+        if (inspect_stack.indexOf(id) !== -1) {
+          pushed = false;
+          return '[...]';
+        }
+        inspect_stack.push(id)
 
-      for (var i = 0, length = self.length; i < length; i++) {
-        var item = self['$[]'](i);
+        for (var i = 0, length = self.length; i < length; i++) {
+          var item = self['$[]'](i);
 
-        if ((item).$__id__() === id) {
-          result.push('[...]');
+          result.push($$('Opal').$inspect(item));
         }
-        else {
-          result.push((item).$inspect());
-        }
-      }
 
-      return '[' + result.join(', ') + ']';
-    
-    }, $Array_inspect$61.$$arity = 0);
+        return '[' + result.join(', ') + ']';
+      ;
+      return nil;
+      } finally {
+        if (pushed) inspect_stack.pop()
+      }; })();;
+    }, 0);
     
-    Opal.def(self, '$intersection', $Array_intersection$62 = function $$intersection($a) {
-      var $post_args, arrays, $$63, self = this;
+    $def(self, '$intersection', function $$intersection($a) {
+      var $post_args, arrays, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       arrays = $post_args;;
-      return $send(arrays, 'reduce', [self.$to_a().$dup()], ($$63 = function(a, b){var self = $$63.$$s == null ? this : $$63.$$s;
-
+      return $send(arrays, 'reduce', [self.$to_a().$dup()], function $$31(a, b){
         
         
-        if (a == null) {
-          a = nil;
-        };
+        if (a == null) a = nil;;
         
-        if (b == null) {
-          b = nil;
-        };
-        return a['$&'](b);}, $$63.$$s = self, $$63.$$arity = 2, $$63));
-    }, $Array_intersection$62.$$arity = -1);
+        if (b == null) b = nil;;
+        return a['$&'](b);}, 2);
+    }, -1);
+    
+    $def(self, '$intersect?', function $Array_intersect$ques$32(other) {
+      var self = this;
+
+      return self.$intersection(other)['$empty?']()['$!']()
+    }, 1);
     
-    Opal.def(self, '$join', $Array_join$64 = function $$join(sep) {
+    $def(self, '$join', function $$join(sep) {
       var self = this;
       if ($gvars[","] == null) $gvars[","] = nil;
 
       
       
-      if (sep == null) {
-        sep = nil;
-      };
+      if (sep == null) sep = nil;;
       if ($truthy(self.length === 0)) {
-        return ""};
+        return ""
+      };
       if ($truthy(sep === nil)) {
-        sep = $gvars[","]};
+        sep = $gvars[","]
+      };
       
       var result = [];
       var i, length, item, tmp;
@@ -14334,7 +14422,7 @@ Opal.modules["corelib/array"] = function(Opal) {
           tmp = (item).$to_ary();
 
           if (tmp === self) {
-            self.$raise($$($nesting, 'ArgumentError'));
+            $Kernel.$raise($$$('ArgumentError'));
           }
 
           if (tmp !== nil) {
@@ -14354,36 +14442,34 @@ Opal.modules["corelib/array"] = function(Opal) {
           }
         }
 
-        self.$raise($$($nesting, 'NoMethodError').$new("" + (Opal.inspect(item)) + " doesn't respond to #to_str, #to_ary or #to_s", "to_str"));
+        $Kernel.$raise($$$('NoMethodError').$new("" + ($$('Opal').$inspect(self.$item())) + " doesn't respond to #to_str, #to_ary or #to_s", "to_str"));
       }
 
       if (sep === nil) {
         return result.join('');
       }
       else {
-        return result.join($$($nesting, 'Opal')['$coerce_to!'](sep, $$($nesting, 'String'), "to_str").$to_s());
+        return result.join($Opal['$coerce_to!'](sep, $$$('String'), "to_str").$to_s());
       }
     ;
-    }, $Array_join$64.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$keep_if', $Array_keep_if$65 = function $$keep_if() {
-      var $iter = $Array_keep_if$65.$$p, block = $iter || nil, $$66, self = this;
+    $def(self, '$keep_if', function $$keep_if() {
+      var block = $$keep_if.$$p || nil, self = this;
 
-      if ($iter) $Array_keep_if$65.$$p = null;
-      
+      delete $$keep_if.$$p;
       
-      if ($iter) $Array_keep_if$65.$$p = null;;
-      if ((block !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["keep_if"], ($$66 = function(){var self = $$66.$$s == null ? this : $$66.$$s;
+      ;
+      if (!(block !== nil)) {
+        return $send(self, 'enum_for', ["keep_if"], function $$33(){var self = $$33.$$s == null ? this : $$33.$$s;
 
-          return self.$size()}, $$66.$$s = self, $$66.$$arity = 0, $$66))
+          return self.$size()}, {$$arity: 0, $$s: self})
       };
       filterIf(self, $truthy, block);
       return self;
-    }, $Array_keep_if$65.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$last', $Array_last$67 = function $$last(count) {
+    $def(self, '$last', function $$last(count) {
       var self = this;
 
       
@@ -14393,10 +14479,10 @@ Opal.modules["corelib/array"] = function(Opal) {
         return self.length === 0 ? nil : self[self.length - 1];
       }
 
-      count = $coerce_to(count, $$($nesting, 'Integer'), 'to_int');
+      count = $coerce_to(count, $$$('Integer'), 'to_int');
 
       if (count < 0) {
-        self.$raise($$($nesting, 'ArgumentError'), "negative array size");
+        $Kernel.$raise($$$('ArgumentError'), "negative array size");
       }
 
       if (count > self.length) {
@@ -14405,36 +14491,32 @@ Opal.modules["corelib/array"] = function(Opal) {
 
       return self.slice(self.length - count, self.length);
     ;
-    }, $Array_last$67.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$length', $Array_length$68 = function $$length() {
+    $def(self, '$length', function $$length() {
       var self = this;
 
       return self.length;
-    }, $Array_length$68.$$arity = 0);
-    $alias(self, "map", "collect");
-    $alias(self, "map!", "collect!");
+    }, 0);
     
-    Opal.def(self, '$max', $Array_max$69 = function $$max(n) {
-      var $iter = $Array_max$69.$$p, block = $iter || nil, self = this;
+    $def(self, '$max', function $$max(n) {
+      var block = $$max.$$p || nil, self = this;
 
-      if ($iter) $Array_max$69.$$p = null;
-      
+      delete $$max.$$p;
       
-      if ($iter) $Array_max$69.$$p = null;;
+      ;
       ;
       return $send(self.$each(), 'max', [n], block.$to_proc());
-    }, $Array_max$69.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$min', $Array_min$70 = function $$min() {
-      var $iter = $Array_min$70.$$p, block = $iter || nil, self = this;
+    $def(self, '$min', function $$min() {
+      var block = $$min.$$p || nil, self = this;
 
-      if ($iter) $Array_min$70.$$p = null;
-      
+      delete $$min.$$p;
       
-      if ($iter) $Array_min$70.$$p = null;;
+      ;
       return $send(self.$each(), 'min', [], block.$to_proc());
-    }, $Array_min$70.$$arity = 0);
+    }, 0);
     
     // Returns the product of from, from-1, ..., from - how_many + 1.
     function descending_factorial(from, how_many) {
@@ -14448,19 +14530,17 @@ Opal.modules["corelib/array"] = function(Opal) {
     }
   ;
     
-    Opal.def(self, '$permutation', $Array_permutation$71 = function $$permutation(num) {
-      var $iter = $Array_permutation$71.$$p, block = $iter || nil, $$72, self = this, perm = nil, used = nil;
+    $def(self, '$permutation', function $$permutation(num) {
+      var block = $$permutation.$$p || nil, self = this, perm = nil, used = nil;
 
-      if ($iter) $Array_permutation$71.$$p = null;
-      
+      delete $$permutation.$$p;
       
-      if ($iter) $Array_permutation$71.$$p = null;;
       ;
-      if ((block !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["permutation", num], ($$72 = function(){var self = $$72.$$s == null ? this : $$72.$$s;
+      ;
+      if (!(block !== nil)) {
+        return $send(self, 'enum_for', ["permutation", num], function $$34(){var self = $$34.$$s == null ? this : $$34.$$s;
 
-          return descending_factorial(self.length, num === undefined ? self.length : num);}, $$72.$$s = self, $$72.$$arity = 0, $$72))
+          return descending_factorial(self.length, num === undefined ? self.length : num);}, {$$arity: 0, $$s: self})
       };
       
       var permute, offensive, output;
@@ -14469,7 +14549,7 @@ Opal.modules["corelib/array"] = function(Opal) {
         num = self.length;
       }
       else {
-        num = $coerce_to(num, $$($nesting, 'Integer'), 'to_int');
+        num = $coerce_to(num, $$$('Integer'), 'to_int');
       }
 
       if (num < 0 || self.length < num) {
@@ -14487,8 +14567,8 @@ Opal.modules["corelib/array"] = function(Opal) {
       }
       else {
         // this is the general case
-        (perm = $$($nesting, 'Array').$new(num));
-        (used = $$($nesting, 'Array').$new(self.length, false));
+        (perm = $$('Array').$new(num));
+        (used = $$('Array').$new(self.length, false));
 
         permute = function(num, perm, index, used, blk) {
           self = this;
@@ -14522,23 +14602,22 @@ Opal.modules["corelib/array"] = function(Opal) {
       }
     ;
       return self;
-    }, $Array_permutation$71.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$repeated_permutation', $Array_repeated_permutation$73 = function $$repeated_permutation(n) {
-      var $$74, $iter = $Array_repeated_permutation$73.$$p, $yield = $iter || nil, self = this, num = nil;
+    $def(self, '$repeated_permutation', function $$repeated_permutation(n) {
+      var $yield = $$repeated_permutation.$$p || nil, self = this, num = nil;
 
-      if ($iter) $Array_repeated_permutation$73.$$p = null;
+      delete $$repeated_permutation.$$p;
       
-      num = $$($nesting, 'Opal')['$coerce_to!'](n, $$($nesting, 'Integer'), "to_int");
-      if (($yield !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["repeated_permutation", num], ($$74 = function(){var self = $$74.$$s == null ? this : $$74.$$s;
+      num = $Opal['$coerce_to!'](n, $$$('Integer'), "to_int");
+      if (!($yield !== nil)) {
+        return $send(self, 'enum_for', ["repeated_permutation", num], function $$35(){var self = $$35.$$s == null ? this : $$35.$$s;
 
           if ($truthy($rb_ge(num, 0))) {
             return self.$size()['$**'](num)
           } else {
             return 0
-          }}, $$74.$$s = self, $$74.$$arity = 0, $$74))
+          }}, {$$arity: 0, $$s: self})
       };
       
       function iterate(max, buffer, self) {
@@ -14557,9 +14636,9 @@ Opal.modules["corelib/array"] = function(Opal) {
       iterate(num, [], self.slice());
     ;
       return self;
-    }, $Array_repeated_permutation$73.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$pop', $Array_pop$75 = function $$pop(count) {
+    $def(self, '$pop', function $$pop(count) {
       var self = this;
 
       
@@ -14567,13 +14646,17 @@ Opal.modules["corelib/array"] = function(Opal) {
       if ($truthy(count === undefined)) {
         
         if ($truthy(self.length === 0)) {
-          return nil};
-        return self.pop();};
-      count = $coerce_to(count, $$($nesting, 'Integer'), 'to_int');
+          return nil
+        };
+        return self.pop();
+      };
+      count = $coerce_to(count, $$$('Integer'), 'to_int');
       if ($truthy(count < 0)) {
-        self.$raise($$($nesting, 'ArgumentError'), "negative array size")};
+        $Kernel.$raise($$$('ArgumentError'), "negative array size")
+      };
       if ($truthy(self.length === 0)) {
-        return []};
+        return []
+      };
       if ($truthy(count === 1)) {
         return [self.pop()];
       } else if ($truthy(count > self.length)) {
@@ -14581,17 +14664,16 @@ Opal.modules["corelib/array"] = function(Opal) {
       } else {
         return self.splice(self.length - count, self.length);
       };
-    }, $Array_pop$75.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$product', $Array_product$76 = function $$product($a) {
-      var $iter = $Array_product$76.$$p, block = $iter || nil, $post_args, args, self = this;
+    $def(self, '$product', function $$product($a) {
+      var block = $$product.$$p || nil, $post_args, args, self = this;
 
-      if ($iter) $Array_product$76.$$p = null;
+      delete $$product.$$p;
       
+      ;
       
-      if ($iter) $Array_product$76.$$p = null;;
-      
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
       
@@ -14604,7 +14686,7 @@ Opal.modules["corelib/array"] = function(Opal) {
 
       arrays[0] = self;
       for (i = 1; i < n; i++) {
-        arrays[i] = $coerce_to(args[i - 1], $$($nesting, 'Array'), 'to_ary');
+        arrays[i] = $coerce_to(args[i - 1], $$$('Array'), 'to_ary');
       }
 
       for (i = 0; i < n; i++) {
@@ -14614,7 +14696,7 @@ Opal.modules["corelib/array"] = function(Opal) {
         }
         resultlen *= len;
         if (resultlen > 2147483647) {
-          self.$raise($$($nesting, 'RangeError'), "too big to product")
+          $Kernel.$raise($$$('RangeError'), "too big to product")
         }
         lengths[i] = len;
         counters[i] = 0;
@@ -14641,14 +14723,14 @@ Opal.modules["corelib/array"] = function(Opal) {
 
       return result || self;
     ;
-    }, $Array_product$76.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$push', $Array_push$77 = function $$push($a) {
+    $def(self, '$push', function $$push($a) {
       var $post_args, objects, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       objects = $post_args;;
       
@@ -14657,10 +14739,9 @@ Opal.modules["corelib/array"] = function(Opal) {
       }
     ;
       return self;
-    }, $Array_push$77.$$arity = -1);
-    $alias(self, "append", "push");
+    }, -1);
     
-    Opal.def(self, '$rassoc', $Array_rassoc$78 = function $$rassoc(object) {
+    $def(self, '$rassoc', function $$rassoc(object) {
       var self = this;
 
       
@@ -14676,20 +14757,18 @@ Opal.modules["corelib/array"] = function(Opal) {
 
       return nil;
     
-    }, $Array_rassoc$78.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$reject', $Array_reject$79 = function $$reject() {
-      var $iter = $Array_reject$79.$$p, block = $iter || nil, $$80, self = this;
+    $def(self, '$reject', function $$reject() {
+      var block = $$reject.$$p || nil, self = this;
 
-      if ($iter) $Array_reject$79.$$p = null;
-      
+      delete $$reject.$$p;
       
-      if ($iter) $Array_reject$79.$$p = null;;
-      if ((block !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["reject"], ($$80 = function(){var self = $$80.$$s == null ? this : $$80.$$s;
+      ;
+      if (!(block !== nil)) {
+        return $send(self, 'enum_for', ["reject"], function $$36(){var self = $$36.$$s == null ? this : $$36.$$s;
 
-          return self.$size()}, $$80.$$s = self, $$80.$$arity = 0, $$80))
+          return self.$size()}, {$$arity: 0, $$s: self})
       };
       
       var result = [];
@@ -14703,82 +14782,73 @@ Opal.modules["corelib/array"] = function(Opal) {
       }
       return result;
     ;
-    }, $Array_reject$79.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$reject!', $Array_reject$excl$81 = function() {
-      var $iter = $Array_reject$excl$81.$$p, block = $iter || nil, $$82, self = this, original = nil;
+    $def(self, '$reject!', function $Array_reject$excl$37() {
+      var block = $Array_reject$excl$37.$$p || nil, self = this, original = nil;
 
-      if ($iter) $Array_reject$excl$81.$$p = null;
-      
+      delete $Array_reject$excl$37.$$p;
       
-      if ($iter) $Array_reject$excl$81.$$p = null;;
-      if ((block !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["reject!"], ($$82 = function(){var self = $$82.$$s == null ? this : $$82.$$s;
+      ;
+      if (!(block !== nil)) {
+        return $send(self, 'enum_for', ["reject!"], function $$38(){var self = $$38.$$s == null ? this : $$38.$$s;
 
-          return self.$size()}, $$82.$$s = self, $$82.$$arity = 0, $$82))
+          return self.$size()}, {$$arity: 0, $$s: self})
       };
       original = self.$length();
       $send(self, 'delete_if', [], block.$to_proc());
-      if (self.$length()['$=='](original)) {
+      if ($eqeq(self.$length(), original)) {
         return nil
       } else {
         return self
       };
-    }, $Array_reject$excl$81.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$replace', $Array_replace$83 = function $$replace(other) {
+    $def(self, '$replace', function $$replace(other) {
       var self = this;
 
       
-      other = (function() {if ($truthy($$($nesting, 'Array')['$==='](other))) {
-        return other.$to_a()
-      } else {
-        return ($coerce_to(other, $$($nesting, 'Array'), 'to_ary')).$to_a()
-      }; return nil; })();
+      other = ($eqeqeq($$$('Array'), other) ? (other.$to_a()) : (($coerce_to(other, $$$('Array'), 'to_ary')).$to_a()));
       
       self.splice(0, self.length);
       self.push.apply(self, other);
     ;
       return self;
-    }, $Array_replace$83.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$reverse', $Array_reverse$84 = function $$reverse() {
+    $def(self, '$reverse', function $$reverse() {
       var self = this;
 
       return self.slice(0).reverse();
-    }, $Array_reverse$84.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$reverse!', $Array_reverse$excl$85 = function() {
+    $def(self, '$reverse!', function $Array_reverse$excl$39() {
       var self = this;
 
       return self.reverse();
-    }, $Array_reverse$excl$85.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$reverse_each', $Array_reverse_each$86 = function $$reverse_each() {
-      var $iter = $Array_reverse_each$86.$$p, block = $iter || nil, $$87, self = this;
+    $def(self, '$reverse_each', function $$reverse_each() {
+      var block = $$reverse_each.$$p || nil, self = this;
 
-      if ($iter) $Array_reverse_each$86.$$p = null;
+      delete $$reverse_each.$$p;
       
-      
-      if ($iter) $Array_reverse_each$86.$$p = null;;
-      if ((block !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["reverse_each"], ($$87 = function(){var self = $$87.$$s == null ? this : $$87.$$s;
+      ;
+      if (!(block !== nil)) {
+        return $send(self, 'enum_for', ["reverse_each"], function $$40(){var self = $$40.$$s == null ? this : $$40.$$s;
 
-          return self.$size()}, $$87.$$s = self, $$87.$$arity = 0, $$87))
+          return self.$size()}, {$$arity: 0, $$s: self})
       };
       $send(self.$reverse(), 'each', [], block.$to_proc());
       return self;
-    }, $Array_reverse_each$86.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$rindex', $Array_rindex$88 = function $$rindex(object) {
-      var $iter = $Array_rindex$88.$$p, block = $iter || nil, self = this;
+    $def(self, '$rindex', function $$rindex(object) {
+      var block = $$rindex.$$p || nil, self = this;
 
-      if ($iter) $Array_rindex$88.$$p = null;
+      delete $$rindex.$$p;
       
-      
-      if ($iter) $Array_rindex$88.$$p = null;;
+      ;
       ;
       
       var i, value;
@@ -14816,20 +14886,18 @@ Opal.modules["corelib/array"] = function(Opal) {
 
       return nil;
     ;
-    }, $Array_rindex$88.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$rotate', $Array_rotate$89 = function $$rotate(n) {
+    $def(self, '$rotate', function $$rotate(n) {
       var self = this;
 
       
       
-      if (n == null) {
-        n = 1;
-      };
+      if (n == null) n = 1;;
       
       var ary, idx, firstPart, lastPart;
 
-      n = $coerce_to(n, $$($nesting, 'Integer'), 'to_int')
+      n = $coerce_to(n, $$$('Integer'), 'to_int')
 
       if (self.length === 1) {
         return self.slice();
@@ -14845,95 +14913,83 @@ Opal.modules["corelib/array"] = function(Opal) {
       lastPart = ary.slice(0, idx);
       return firstPart.concat(lastPart);
     ;
-    }, $Array_rotate$89.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$rotate!', $Array_rotate$excl$90 = function(cnt) {
+    $def(self, '$rotate!', function $Array_rotate$excl$41(cnt) {
       var self = this, ary = nil;
 
       
       
-      if (cnt == null) {
-        cnt = 1;
-      };
+      if (cnt == null) cnt = 1;;
       
       if (self.length === 0 || self.length === 1) {
         return self;
       }
-      cnt = $coerce_to(cnt, $$($nesting, 'Integer'), 'to_int');
+      cnt = $coerce_to(cnt, $$$('Integer'), 'to_int');
     ;
       ary = self.$rotate(cnt);
       return self.$replace(ary);
-    }, $Array_rotate$excl$90.$$arity = -1);
-    (function($base, $super, $parent_nesting) {
+    }, -1);
+    (function($base, $super) {
       var self = $klass($base, $super, 'SampleRandom');
 
-      var $nesting = [self].concat($parent_nesting), $SampleRandom_initialize$91, $SampleRandom_rand$92;
+      var $proto = self.$$prototype;
 
-      self.$$prototype.rng = nil;
+      $proto.rng = nil;
       
       
-      Opal.def(self, '$initialize', $SampleRandom_initialize$91 = function $$initialize(rng) {
+      $def(self, '$initialize', function $$initialize(rng) {
         var self = this;
 
         return (self.rng = rng)
-      }, $SampleRandom_initialize$91.$$arity = 1);
-      return (Opal.def(self, '$rand', $SampleRandom_rand$92 = function $$rand(size) {
+      }, 1);
+      return $def(self, '$rand', function $$rand(size) {
         var self = this, random = nil;
 
         
-        random = $coerce_to(self.rng.$rand(size), $$($nesting, 'Integer'), 'to_int');
+        random = $coerce_to(self.rng.$rand(size), $$$('Integer'), 'to_int');
         if ($truthy(random < 0)) {
-          self.$raise($$($nesting, 'RangeError'), "random value must be >= 0")};
-        if ($truthy(random < size)) {
-        } else {
-          self.$raise($$($nesting, 'RangeError'), "random value must be less than Array size")
+          $Kernel.$raise($$$('RangeError'), "random value must be >= 0")
+        };
+        if (!$truthy(random < size)) {
+          $Kernel.$raise($$$('RangeError'), "random value must be less than Array size")
         };
         return random;
-      }, $SampleRandom_rand$92.$$arity = 1), nil) && 'rand';
-    })($nesting[0], null, $nesting);
+      }, 1);
+    })(self, null);
     
-    Opal.def(self, '$sample', $Array_sample$93 = function $$sample(count, options) {
-      var self = this, o = nil, $ret_or_3 = nil, rng = nil, $ret_or_4 = nil;
+    $def(self, '$sample', function $$sample(count, options) {
+      var self = this, o = nil, rng = nil;
 
       
       ;
       ;
       if ($truthy(count === undefined)) {
-        return self.$at($$($nesting, 'Kernel').$rand(self.length))};
+        return self.$at($Kernel.$rand(self.length))
+      };
       if ($truthy(options === undefined)) {
-        if ($truthy((o = $$($nesting, 'Opal')['$coerce_to?'](count, $$($nesting, 'Hash'), "to_hash")))) {
+        if ($truthy((o = $Opal['$coerce_to?'](count, $$$('Hash'), "to_hash")))) {
           
           options = o;
           count = nil;
         } else {
           
           options = nil;
-          count = $coerce_to(count, $$($nesting, 'Integer'), 'to_int');
+          count = $coerce_to(count, $$$('Integer'), 'to_int');
         }
       } else {
         
-        count = $coerce_to(count, $$($nesting, 'Integer'), 'to_int');
-        options = $coerce_to(options, $$($nesting, 'Hash'), 'to_hash');
+        count = $coerce_to(count, $$$('Integer'), 'to_int');
+        options = $coerce_to(options, $$$('Hash'), 'to_hash');
+      };
+      if (($truthy(count) && ($truthy(count < 0)))) {
+        $Kernel.$raise($$$('ArgumentError'), "count must be greater than 0")
       };
-      if ($truthy((function() {if ($truthy(($ret_or_3 = count))) {
-        return count < 0;
-      } else {
-        return $ret_or_3
-      }; return nil; })())) {
-        self.$raise($$($nesting, 'ArgumentError'), "count must be greater than 0")};
       if ($truthy(options)) {
-        rng = options['$[]']("random")};
-      rng = (function() {if ($truthy((function() {if ($truthy(($ret_or_4 = rng))) {
-        return rng['$respond_to?']("rand")
-      } else {
-        return $ret_or_4
-      }; return nil; })())) {
-        return $$($nesting, 'SampleRandom').$new(rng)
-      } else {
-        return $$($nesting, 'Kernel')
-      }; return nil; })();
-      if ($truthy(count)) {
-      } else {
+        rng = options['$[]']("random")
+      };
+      rng = (($truthy(rng) && ($truthy(rng['$respond_to?']("rand")))) ? ($$('SampleRandom').$new(rng)) : ($Kernel));
+      if (!$truthy(count)) {
         return self[rng.$rand(self.length)]
       };
       
@@ -14964,7 +15020,7 @@ Opal.modules["corelib/array"] = function(Opal) {
             abandon = false;
             spin = 0;
 
-            result = $$($nesting, 'Array').$new(count);
+            result = $$('Array').$new(count);
             i = 1;
 
             result[0] = rng.$rand(self.length);
@@ -15016,20 +15072,18 @@ Opal.modules["corelib/array"] = function(Opal) {
           return count === self.length ? result : (result)['$[]'](0, count);
       }
     ;
-    }, $Array_sample$93.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$select', $Array_select$94 = function $$select() {
-      var $iter = $Array_select$94.$$p, block = $iter || nil, $$95, self = this;
+    $def(self, '$select', function $$select() {
+      var block = $$select.$$p || nil, self = this;
 
-      if ($iter) $Array_select$94.$$p = null;
-      
+      delete $$select.$$p;
       
-      if ($iter) $Array_select$94.$$p = null;;
-      if ((block !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["select"], ($$95 = function(){var self = $$95.$$s == null ? this : $$95.$$s;
+      ;
+      if (!(block !== nil)) {
+        return $send(self, 'enum_for', ["select"], function $$42(){var self = $$42.$$s == null ? this : $$42.$$s;
 
-          return self.$size()}, $$95.$$s = self, $$95.$$arity = 0, $$95))
+          return self.$size()}, {$$arity: 0, $$s: self})
       };
       
       var result = [];
@@ -15046,31 +15100,27 @@ Opal.modules["corelib/array"] = function(Opal) {
 
       return result;
     ;
-    }, $Array_select$94.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$select!', $Array_select$excl$96 = function() {
-      var $iter = $Array_select$excl$96.$$p, block = $iter || nil, $$97, self = this;
+    $def(self, '$select!', function $Array_select$excl$43() {
+      var block = $Array_select$excl$43.$$p || nil, self = this;
 
-      if ($iter) $Array_select$excl$96.$$p = null;
-      
+      delete $Array_select$excl$43.$$p;
       
-      if ($iter) $Array_select$excl$96.$$p = null;;
-      if ((block !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["select!"], ($$97 = function(){var self = $$97.$$s == null ? this : $$97.$$s;
+      ;
+      if (!(block !== nil)) {
+        return $send(self, 'enum_for', ["select!"], function $$44(){var self = $$44.$$s == null ? this : $$44.$$s;
 
-          return self.$size()}, $$97.$$s = self, $$97.$$arity = 0, $$97))
+          return self.$size()}, {$$arity: 0, $$s: self})
       };
       
       var original = self.length;
       $send(self, 'keep_if', [], block.$to_proc());
       return self.length === original ? nil : self;
     ;
-    }, $Array_select$excl$96.$$arity = 0);
-    $alias(self, "filter", "select");
-    $alias(self, "filter!", "select!");
+    }, 0);
     
-    Opal.def(self, '$shift', $Array_shift$98 = function $$shift(count) {
+    $def(self, '$shift', function $$shift(count) {
       var self = this;
 
       
@@ -15078,26 +15128,29 @@ Opal.modules["corelib/array"] = function(Opal) {
       if ($truthy(count === undefined)) {
         
         if ($truthy(self.length === 0)) {
-          return nil};
-        return shiftNoArg(self);};
-      count = $coerce_to(count, $$($nesting, 'Integer'), 'to_int');
+          return nil
+        };
+        return shiftNoArg(self);
+      };
+      count = $coerce_to(count, $$$('Integer'), 'to_int');
       if ($truthy(count < 0)) {
-        self.$raise($$($nesting, 'ArgumentError'), "negative array size")};
+        $Kernel.$raise($$$('ArgumentError'), "negative array size")
+      };
       if ($truthy(self.length === 0)) {
-        return []};
+        return []
+      };
       return self.splice(0, count);;
-    }, $Array_shift$98.$$arity = -1);
-    $alias(self, "size", "length");
+    }, -1);
     
-    Opal.def(self, '$shuffle', $Array_shuffle$99 = function $$shuffle(rng) {
+    $def(self, '$shuffle', function $$shuffle(rng) {
       var self = this;
 
       
       ;
       return self.$dup().$to_a()['$shuffle!'](rng);
-    }, $Array_shuffle$99.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$shuffle!', $Array_shuffle$excl$100 = function(rng) {
+    $def(self, '$shuffle!', function $Array_shuffle$excl$45(rng) {
       var self = this;
 
       
@@ -15106,7 +15159,7 @@ Opal.modules["corelib/array"] = function(Opal) {
       var randgen, i = self.length, j, tmp;
 
       if (rng !== undefined) {
-        rng = $$($nesting, 'Opal')['$coerce_to?'](rng, $$($nesting, 'Hash'), "to_hash");
+        rng = $Opal['$coerce_to?'](rng, $$$('Hash'), "to_hash");
 
         if (rng !== nil) {
           rng = rng['$[]']("random");
@@ -15122,11 +15175,11 @@ Opal.modules["corelib/array"] = function(Opal) {
           j = randgen.$rand(i).$to_int();
 
           if (j < 0) {
-            self.$raise($$($nesting, 'RangeError'), "" + "random number too small " + (j))
+            $Kernel.$raise($$$('RangeError'), "random number too small " + (j))
           }
 
           if (j >= i) {
-            self.$raise($$($nesting, 'RangeError'), "" + "random number too big " + (j))
+            $Kernel.$raise($$$('RangeError'), "random number too big " + (j))
           }
         }
         else {
@@ -15140,22 +15193,21 @@ Opal.modules["corelib/array"] = function(Opal) {
 
       return self;
     ;
-    }, $Array_shuffle$excl$100.$$arity = -1);
-    $alias(self, "slice", "[]");
+    }, -1);
     
-    Opal.def(self, '$slice!', $Array_slice$excl$101 = function(index, length) {
+    $def(self, '$slice!', function $Array_slice$excl$46(index, length) {
       var self = this, result = nil, range = nil, range_start = nil, range_end = nil, start = nil;
 
       
       ;
       result = nil;
       if ($truthy(length === undefined)) {
-        if ($truthy($$($nesting, 'Range')['$==='](index))) {
+        if ($eqeqeq($$$('Range'), index)) {
           
           range = index;
           result = self['$[]'](range);
-          range_start = $coerce_to(range.begin, $$($nesting, 'Integer'), 'to_int');
-          range_end = $coerce_to(range.end, $$($nesting, 'Integer'), 'to_int');
+          range_start = range.begin === nil ? 0 : $coerce_to(range.begin, $$$('Integer'), 'to_int');
+          range_end = range.end === nil ? -1 : $coerce_to(range.end, $$$('Integer'), 'to_int');
           
           if (range_start < 0) {
             range_start += self.length;
@@ -15171,7 +15223,7 @@ Opal.modules["corelib/array"] = function(Opal) {
           }
 
           var range_length = range_end - range_start;
-          if (range.excl) {
+          if (range.excl && range.end !== nil) {
             range_end -= 1;
           } else {
             range_length += 1;
@@ -15183,7 +15235,7 @@ Opal.modules["corelib/array"] = function(Opal) {
         ;
         } else {
           
-          start = $coerce_to(index, $$($nesting, 'Integer'), 'to_int');
+          start = $coerce_to(index, $$$('Integer'), 'to_int');
           
           if (start < 0) {
             start += self.length;
@@ -15204,8 +15256,8 @@ Opal.modules["corelib/array"] = function(Opal) {
         }
       } else {
         
-        start = $coerce_to(index, $$($nesting, 'Integer'), 'to_int');
-        length = $coerce_to(length, $$($nesting, 'Integer'), 'to_int');
+        start = $coerce_to(index, $$$('Integer'), 'to_int');
+        length = $coerce_to(length, $$$('Integer'), 'to_int');
         
         if (length < 0) {
           return nil;
@@ -15229,17 +15281,15 @@ Opal.modules["corelib/array"] = function(Opal) {
       ;
       };
       return result;
-    }, $Array_slice$excl$101.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$sort', $Array_sort$102 = function $$sort() {
-      var $iter = $Array_sort$102.$$p, block = $iter || nil, self = this;
+    $def(self, '$sort', function $$sort() {
+      var block = $$sort.$$p || nil, self = this;
 
-      if ($iter) $Array_sort$102.$$p = null;
-      
+      delete $$sort.$$p;
       
-      if ($iter) $Array_sort$102.$$p = null;;
-      if ($truthy(self.length > 1)) {
-      } else {
+      ;
+      if (!$truthy(self.length > 1)) {
         return self
       };
       
@@ -15253,21 +15303,20 @@ Opal.modules["corelib/array"] = function(Opal) {
         var ret = block(x, y);
 
         if (ret === nil) {
-          self.$raise($$($nesting, 'ArgumentError'), "" + "comparison of " + ((x).$inspect()) + " with " + ((y).$inspect()) + " failed");
+          $Kernel.$raise($$$('ArgumentError'), "comparison of " + ((x).$inspect()) + " with " + ((y).$inspect()) + " failed");
         }
 
         return $rb_gt(ret, 0) ? 1 : ($rb_lt(ret, 0) ? -1 : 0);
       });
     ;
-    }, $Array_sort$102.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$sort!', $Array_sort$excl$103 = function() {
-      var $iter = $Array_sort$excl$103.$$p, block = $iter || nil, self = this;
+    $def(self, '$sort!', function $Array_sort$excl$47() {
+      var block = $Array_sort$excl$47.$$p || nil, self = this;
 
-      if ($iter) $Array_sort$excl$103.$$p = null;
+      delete $Array_sort$excl$47.$$p;
       
-      
-      if ($iter) $Array_sort$excl$103.$$p = null;;
+      ;
       
       var result;
 
@@ -15285,43 +15334,40 @@ Opal.modules["corelib/array"] = function(Opal) {
 
       return self;
     ;
-    }, $Array_sort$excl$103.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$sort_by!', $Array_sort_by$excl$104 = function() {
-      var $iter = $Array_sort_by$excl$104.$$p, block = $iter || nil, $$105, self = this;
+    $def(self, '$sort_by!', function $Array_sort_by$excl$48() {
+      var block = $Array_sort_by$excl$48.$$p || nil, self = this;
 
-      if ($iter) $Array_sort_by$excl$104.$$p = null;
+      delete $Array_sort_by$excl$48.$$p;
       
-      
-      if ($iter) $Array_sort_by$excl$104.$$p = null;;
-      if ((block !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["sort_by!"], ($$105 = function(){var self = $$105.$$s == null ? this : $$105.$$s;
+      ;
+      if (!(block !== nil)) {
+        return $send(self, 'enum_for', ["sort_by!"], function $$49(){var self = $$49.$$s == null ? this : $$49.$$s;
 
-          return self.$size()}, $$105.$$s = self, $$105.$$arity = 0, $$105))
+          return self.$size()}, {$$arity: 0, $$s: self})
       };
       return self.$replace($send(self, 'sort_by', [], block.$to_proc()));
-    }, $Array_sort_by$excl$104.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$take', $Array_take$106 = function $$take(count) {
+    $def(self, '$take', function $$take(count) {
       var self = this;
 
       
       if (count < 0) {
-        self.$raise($$($nesting, 'ArgumentError'));
+        $Kernel.$raise($$$('ArgumentError'));
       }
 
       return self.slice(0, count);
     
-    }, $Array_take$106.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$take_while', $Array_take_while$107 = function $$take_while() {
-      var $iter = $Array_take_while$107.$$p, block = $iter || nil, self = this;
+    $def(self, '$take_while', function $$take_while() {
+      var block = $$take_while.$$p || nil, self = this;
 
-      if ($iter) $Array_take_while$107.$$p = null;
+      delete $$take_while.$$p;
       
-      
-      if ($iter) $Array_take_while$107.$$p = null;;
+      ;
       
       var result = [];
 
@@ -15339,9 +15385,9 @@ Opal.modules["corelib/array"] = function(Opal) {
 
       return result;
     ;
-    }, $Array_take_while$107.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_a', $Array_to_a$108 = function $$to_a() {
+    $def(self, '$to_a', function $$to_a() {
       var self = this;
 
       
@@ -15352,34 +15398,34 @@ Opal.modules["corelib/array"] = function(Opal) {
         return Opal.Array.$new(self);
       }
     
-    }, $Array_to_a$108.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_ary', $Array_to_ary$109 = function $$to_ary() {
+    $def(self, '$to_ary', function $$to_ary() {
       var self = this;
 
       return self
-    }, $Array_to_ary$109.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_h', $Array_to_h$110 = function $$to_h() {
-      var $iter = $Array_to_h$110.$$p, block = $iter || nil, self = this, array = nil;
+    $def(self, '$to_h', function $$to_h() {
+      var block = $$to_h.$$p || nil, self = this, array = nil;
 
-      if ($iter) $Array_to_h$110.$$p = null;
+      delete $$to_h.$$p;
       
-      
-      if ($iter) $Array_to_h$110.$$p = null;;
+      ;
       array = self;
       if ((block !== nil)) {
-        array = $send(array, 'map', [], block.$to_proc())};
+        array = $send(array, 'map', [], block.$to_proc())
+      };
       
       var i, len = array.length, ary, key, val, hash = $hash2([], {});
 
       for (i = 0; i < len; i++) {
-        ary = $$($nesting, 'Opal')['$coerce_to?'](array[i], $$($nesting, 'Array'), "to_ary");
+        ary = $Opal['$coerce_to?'](array[i], $$$('Array'), "to_ary");
         if (!ary.$$is_array) {
-          self.$raise($$($nesting, 'TypeError'), "" + "wrong element type " + ((ary).$class()) + " at " + (i) + " (expected array)")
+          $Kernel.$raise($$$('TypeError'), "wrong element type " + ((ary).$class()) + " at " + (i) + " (expected array)")
         }
         if (ary.length !== 2) {
-          self.$raise($$($nesting, 'ArgumentError'), "" + "wrong array length at " + (i) + " (expected 2, was " + ((ary).$length()) + ")")
+          $Kernel.$raise($$$('ArgumentError'), "wrong array length at " + (i) + " (expected 2, was " + ((ary).$length()) + ")")
         }
         key = ary[0];
         val = ary[1];
@@ -15388,84 +15434,60 @@ Opal.modules["corelib/array"] = function(Opal) {
 
       return hash;
     ;
-    }, $Array_to_h$110.$$arity = 0);
-    $alias(self, "to_s", "inspect");
+    }, 0);
     
-    Opal.def(self, '$transpose', $Array_transpose$111 = function $$transpose() {
-      var $$112, self = this, result = nil, max = nil;
+    $def(self, '$transpose', function $$transpose() {
+      var self = this, result = nil, max = nil;
 
       
       if ($truthy(self['$empty?']())) {
-        return []};
+        return []
+      };
       result = [];
       max = nil;
-      $send(self, 'each', [], ($$112 = function(row){var self = $$112.$$s == null ? this : $$112.$$s, $$113, $ret_or_5 = nil;
+      $send(self, 'each', [], function $$50(row){var $ret_or_1 = nil;
 
         
         
-        if (row == null) {
-          row = nil;
+        if (row == null) row = nil;;
+        row = ($eqeqeq($$$('Array'), row) ? (row.$to_a()) : (($coerce_to(row, $$$('Array'), 'to_ary')).$to_a()));
+        max = ($truthy(($ret_or_1 = max)) ? ($ret_or_1) : (row.length));
+        if ($neqeq(row.length, max)) {
+          $Kernel.$raise($$$('IndexError'), "element size differs (" + (row.length) + " should be " + (max) + ")")
         };
-        row = (function() {if ($truthy($$($nesting, 'Array')['$==='](row))) {
-          return row.$to_a()
-        } else {
-          return ($coerce_to(row, $$($nesting, 'Array'), 'to_ary')).$to_a()
-        }; return nil; })();
-        max = (function() {if ($truthy(($ret_or_5 = max))) {
-          return $ret_or_5
-        } else {
-          return row.length;
-        }; return nil; })();
-        if ($truthy((row.length)['$!='](max))) {
-          self.$raise($$($nesting, 'IndexError'), "" + "element size differs (" + (row.length) + " should be " + (max) + ")")};
-        return $send((row.length), 'times', [], ($$113 = function(i){var self = $$113.$$s == null ? this : $$113.$$s, entry = nil, $ret_or_6 = nil, $writer = nil;
+        return $send((row.length), 'times', [], function $$51(i){var entry = nil, $writer = nil;
 
           
           
-          if (i == null) {
-            i = nil;
-          };
-          entry = (function() {if ($truthy(($ret_or_6 = result['$[]'](i)))) {
-            return $ret_or_6
-          } else {
-            
-            $writer = [i, []];
-            $send(result, '[]=', Opal.to_a($writer));
-            return $writer[$rb_minus($writer["length"], 1)];
-          }; return nil; })();
-          return entry['$<<'](row.$at(i));}, $$113.$$s = self, $$113.$$arity = 1, $$113));}, $$112.$$s = self, $$112.$$arity = 1, $$112));
+          if (i == null) i = nil;;
+          entry = ($truthy(($ret_or_1 = result['$[]'](i))) ? ($ret_or_1) : ((($writer = [i, []]), $send(result, '[]=', $to_a($writer)), $writer[$rb_minus($writer["length"], 1)])));
+          return entry['$<<'](row.$at(i));}, 1);}, 1);
       return result;
-    }, $Array_transpose$111.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$union', $Array_union$114 = function $$union($a) {
-      var $post_args, arrays, $$115, self = this;
+    $def(self, '$union', function $$union($a) {
+      var $post_args, arrays, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       arrays = $post_args;;
-      return $send(arrays, 'reduce', [self.$uniq()], ($$115 = function(a, b){var self = $$115.$$s == null ? this : $$115.$$s;
-
+      return $send(arrays, 'reduce', [self.$uniq()], function $$52(a, b){
         
         
-        if (a == null) {
-          a = nil;
-        };
+        if (a == null) a = nil;;
         
-        if (b == null) {
-          b = nil;
-        };
-        return a['$|'](b);}, $$115.$$s = self, $$115.$$arity = 2, $$115));
-    }, $Array_union$114.$$arity = -1);
+        if (b == null) b = nil;;
+        return a['$|'](b);}, 2);
+    }, -1);
     
-    Opal.def(self, '$uniq', $Array_uniq$116 = function $$uniq() {
-      var $iter = $Array_uniq$116.$$p, block = $iter || nil, self = this;
+    $def(self, '$uniq', function $$uniq() {
+      var block = $$uniq.$$p || nil, self = this;
 
-      if ($iter) $Array_uniq$116.$$p = null;
+      delete $$uniq.$$p;
       
-      
-      if ($iter) $Array_uniq$116.$$p = null;;
+      ;
       
       var hash = $hash2([], {}), i, length, item, key;
 
@@ -15489,15 +15511,14 @@ Opal.modules["corelib/array"] = function(Opal) {
 
       return (hash).$values();
     ;
-    }, $Array_uniq$116.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$uniq!', $Array_uniq$excl$117 = function() {
-      var $iter = $Array_uniq$excl$117.$$p, block = $iter || nil, self = this;
+    $def(self, '$uniq!', function $Array_uniq$excl$53() {
+      var block = $Array_uniq$excl$53.$$p || nil, self = this;
 
-      if ($iter) $Array_uniq$excl$117.$$p = null;
+      delete $Array_uniq$excl$53.$$p;
       
-      
-      if ($iter) $Array_uniq$excl$117.$$p = null;;
+      ;
       
       var original_length = self.length, hash = $hash2([], {}), i, length, item, key;
 
@@ -15517,14 +15538,14 @@ Opal.modules["corelib/array"] = function(Opal) {
 
       return self.length === original_length ? nil : self;
     ;
-    }, $Array_uniq$excl$117.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$unshift', $Array_unshift$118 = function $$unshift($a) {
+    $def(self, '$unshift', function $$unshift($a) {
       var $post_args, objects, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       objects = $post_args;;
       
@@ -15545,29 +15566,26 @@ Opal.modules["corelib/array"] = function(Opal) {
       }
       return self;
     ;
-    }, $Array_unshift$118.$$arity = -1);
-    $alias(self, "prepend", "unshift");
+    }, -1);
     
-    Opal.def(self, '$values_at', $Array_values_at$119 = function $$values_at($a) {
-      var $post_args, args, $$120, self = this, out = nil;
+    $def(self, '$values_at', function $$values_at($a) {
+      var $post_args, args, self = this, out = nil;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
       out = [];
-      $send(args, 'each', [], ($$120 = function(elem){var self = $$120.$$s == null ? this : $$120.$$s, $$121, finish = nil, start = nil, i = nil;
+      $send(args, 'each', [], function $$54(elem){var self = $$54.$$s == null ? this : $$54.$$s, finish = nil, start = nil, i = nil;
 
         
         
-        if (elem == null) {
-          elem = nil;
-        };
-        if ($truthy(elem['$is_a?']($$($nesting, 'Range')))) {
+        if (elem == null) elem = nil;;
+        if ($truthy(elem['$is_a?']($$$('Range')))) {
           
-          finish = $coerce_to(elem.$last(), $$($nesting, 'Integer'), 'to_int');
-          start = $coerce_to(elem.$first(), $$($nesting, 'Integer'), 'to_int');
+          finish = elem.$end() === nil ? -1 : $coerce_to(elem.$end(), $$$('Integer'), 'to_int');
+          start = elem.$begin() === nil ? 0 : $coerce_to(elem.$begin(), $$$('Integer'), 'to_int');
           
           if (start < 0) {
             start = start + self.length;
@@ -15578,38 +15596,35 @@ Opal.modules["corelib/array"] = function(Opal) {
           if (finish < 0) {
             finish = finish + self.length;
           }
-          if (elem['$exclude_end?']()) {
+          if (elem['$exclude_end?']() && elem.$end() !== nil) {
             finish--;
           }
           if (finish < start) {
             return nil;;
           }
         ;
-          return $send(start, 'upto', [finish], ($$121 = function(i){var self = $$121.$$s == null ? this : $$121.$$s;
+          return $send(start, 'upto', [finish], function $$55(i){var self = $$55.$$s == null ? this : $$55.$$s;
 
             
             
-            if (i == null) {
-              i = nil;
-            };
-            return out['$<<'](self.$at(i));}, $$121.$$s = self, $$121.$$arity = 1, $$121));
+            if (i == null) i = nil;;
+            return out['$<<'](self.$at(i));}, {$$arity: 1, $$s: self});
         } else {
           
-          i = $coerce_to(elem, $$($nesting, 'Integer'), 'to_int');
+          i = $coerce_to(elem, $$$('Integer'), 'to_int');
           return out['$<<'](self.$at(i));
-        };}, $$120.$$s = self, $$120.$$arity = 1, $$120));
+        };}, {$$arity: 1, $$s: self});
       return out;
-    }, $Array_values_at$119.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$zip', $Array_zip$122 = function $$zip($a) {
-      var $iter = $Array_zip$122.$$p, block = $iter || nil, $post_args, others, self = this, $ret_or_7 = nil;
+    $def(self, '$zip', function $$zip($a) {
+      var block = $$zip.$$p || nil, $post_args, others, self = this, $ret_or_1 = nil;
 
-      if ($iter) $Array_zip$122.$$p = null;
-      
+      delete $$zip.$$p;
       
-      if ($iter) $Array_zip$122.$$p = null;;
+      ;
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       others = $post_args;;
       
@@ -15624,11 +15639,7 @@ Opal.modules["corelib/array"] = function(Opal) {
           others[j] = o.$take(size);
           continue;
         }
-        others[j] = (function() {if ($truthy(($ret_or_7 = $$($nesting, 'Opal')['$coerce_to?'](o, $$($nesting, 'Array'), "to_ary")))) {
-        return $ret_or_7
-      } else {
-        return $$($nesting, 'Opal')['$coerce_to!'](o, $$($nesting, 'Enumerator'), "to_enum", "each")
-      }; return nil; })().$to_a();
+        others[j] = ($truthy(($ret_or_1 = $Opal['$coerce_to?'](o, $$$('Array'), "to_ary"))) ? ($ret_or_1) : ($Opal['$coerce_to!'](o, $$$('Enumerator'), "to_enum", "each"))).$to_a();
       }
 
       for (i = 0; i < size; i++) {
@@ -15649,7 +15660,7 @@ Opal.modules["corelib/array"] = function(Opal) {
 
       if (block !== nil) {
         for (i = 0; i < size; i++) {
-          block(result[i]);
+          Opal.yield1(block, result[i]);
         }
 
         return nil;
@@ -15657,97 +15668,90 @@ Opal.modules["corelib/array"] = function(Opal) {
 
       return result;
     ;
-    }, $Array_zip$122.$$arity = -1);
-    Opal.defs(self, '$inherited', $Array_inherited$123 = function $$inherited(klass) {
-      var self = this;
-
+    }, -1);
+    $defs(self, '$inherited', function $$inherited(klass) {
+      
       
       klass.$$prototype.$to_a = function() {
         return this.slice(0, this.length);
       }
     
-    }, $Array_inherited$123.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$instance_variables', $Array_instance_variables$124 = function $$instance_variables() {
-      var $$125, $iter = $Array_instance_variables$124.$$p, $yield = $iter || nil, self = this, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+    $def(self, '$instance_variables', function $$instance_variables() {
+      var $yield = $$instance_variables.$$p || nil, self = this;
 
-      if ($iter) $Array_instance_variables$124.$$p = null;
-      // Prepare super implicit arguments
-      for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-        $zuper[$zuper_i] = arguments[$zuper_i];
-      }
-      return $send($send2(self, $find_super(self, 'instance_variables', $Array_instance_variables$124, false, true), 'instance_variables', $zuper, $iter), 'reject', [], ($$125 = function(ivar){var self = $$125.$$s == null ? this : $$125.$$s, $ret_or_8 = nil;
+      delete $$instance_variables.$$p;
+      return $send($send2(self, $find_super(self, 'instance_variables', $$instance_variables, false, true), 'instance_variables', [], $yield), 'reject', [], function $$56(ivar){var $ret_or_1 = nil;
 
         
         
-        if (ivar == null) {
-          ivar = nil;
-        };
-        if ($truthy(($ret_or_8 = /^@\d+$/.test(ivar)))) {
-          return $ret_or_8
+        if (ivar == null) ivar = nil;;
+        if ($truthy(($ret_or_1 = /^@\d+$/.test(ivar)))) {
+          return $ret_or_1
         } else {
           return ivar['$==']("@length")
-        };}, $$125.$$s = self, $$125.$$arity = 1, $$125))
-    }, $Array_instance_variables$124.$$arity = 0);
-    $$($nesting, 'Opal').$pristine(self.$singleton_class(), "allocate");
-    $$($nesting, 'Opal').$pristine(self, "copy_instance_variables", "initialize_dup");
-    return (Opal.def(self, '$pack', $Array_pack$126 = function $$pack($a) {
-      var $post_args, args, self = this;
+        };}, 1)
+    }, 0);
+    
+    $def(self, '$pack', function $$pack($a) {
+      var $post_args, args;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
-      return self.$raise("To use Array#pack, you must first require 'corelib/array/pack'.");
-    }, $Array_pack$126.$$arity = -1), nil) && 'pack';
-  })($nesting[0], Array, $nesting);
+      return $Kernel.$raise("To use Array#pack, you must first require 'corelib/array/pack'.");
+    }, -1);
+    $alias(self, "append", "push");
+    $alias(self, "filter", "select");
+    $alias(self, "filter!", "select!");
+    $alias(self, "map", "collect");
+    $alias(self, "map!", "collect!");
+    $alias(self, "prepend", "unshift");
+    $alias(self, "size", "length");
+    $alias(self, "slice", "[]");
+    $alias(self, "to_s", "inspect");
+    $Opal.$pristine(self.$singleton_class(), "allocate");
+    return $Opal.$pristine(self, "copy_instance_variables", "initialize_dup");
+  })('::', Array, $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/hash"] = function(Opal) {
-  function $rb_ge(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs >= rhs : lhs['$>='](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $send = Opal.send, $hash2 = Opal.hash2, $truthy = Opal.truthy, $alias = Opal.alias;
+Opal.modules["corelib/hash"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $yield1 = Opal.yield1, $hash = Opal.hash, $hash_init = Opal.hash_init, $hash_get = Opal.hash_get, $hash_put = Opal.hash_put, $hash_delete = Opal.hash_delete, $klass = Opal.klass, $Opal = Opal.Opal, $Kernel = Opal.Kernel, $defs = Opal.defs, $def = Opal.def, $send = Opal.send, $rb_ge = Opal.rb_ge, $rb_gt = Opal.rb_gt, $hash2 = Opal.hash2, $truthy = Opal.truthy, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $alias = Opal.alias;
 
-  Opal.add_stubs(['$require', '$include', '$coerce_to?', '$[]', '$merge!', '$allocate', '$raise', '$coerce_to!', '$each', '$fetch', '$>=', '$>', '$==', '$compare_by_identity', '$lambda?', '$abs', '$arity', '$enum_for', '$size', '$respond_to?', '$class', '$dig', '$except!', '$dup', '$delete', '$new', '$inspect', '$map', '$to_proc', '$flatten', '$eql?', '$default', '$default_proc', '$default_proc=', '$-', '$default=', '$to_h', '$proc']);
+  Opal.add_stubs('require,include,coerce_to?,[],merge!,allocate,raise,coerce_to!,each,fetch,>=,>,==,compare_by_identity,lambda?,abs,arity,enum_for,size,respond_to?,class,dig,except!,dup,delete,new,inspect,map,to_proc,flatten,eql?,default,default_proc,default_proc=,-,default=,to_h,proc');
   
   self.$require("corelib/enumerable");
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Hash');
 
-    var $nesting = [self].concat($parent_nesting), $Hash_$$$1, $Hash_allocate$2, $Hash_try_convert$3, $Hash_initialize$4, $Hash_$eq_eq$5, $Hash_$gt_eq$6, $Hash_$gt$8, $Hash_$lt$9, $Hash_$lt_eq$10, $Hash_$$$11, $Hash_$$$eq$12, $Hash_assoc$13, $Hash_clear$14, $Hash_clone$15, $Hash_compact$16, $Hash_compact$excl$17, $Hash_compare_by_identity$18, $Hash_compare_by_identity$ques$19, $Hash_default$20, $Hash_default$eq$21, $Hash_default_proc$22, $Hash_default_proc$eq$23, $Hash_delete$24, $Hash_delete_if$25, $Hash_dig$27, $Hash_each$28, $Hash_each_key$30, $Hash_each_value$32, $Hash_empty$ques$34, $Hash_except$35, $Hash_except$excl$36, $Hash_fetch$38, $Hash_fetch_values$39, $Hash_flatten$41, $Hash_has_key$ques$42, $Hash_has_value$ques$43, $Hash_hash$44, $Hash_index$45, $Hash_indexes$46, $Hash_inspect$47, $Hash_invert$48, $Hash_keep_if$49, $Hash_keys$51, $Hash_length$52, $Hash_merge$53, $Hash_merge$excl$54, $Hash_rassoc$55, $Hash_rehash$56, $Hash_reject$57, $Hash_reject$excl$59, $Hash_replace$61, $Hash_select$62, $Hash_select$excl$64, $Hash_shift$66, $Hash_slice$67, $Hash_to_a$68, $Hash_to_h$69, $Hash_to_hash$70, $Hash_to_proc$71, $Hash_transform_keys$73, $Hash_transform_keys$excl$75, $Hash_transform_values$77, $Hash_transform_values$excl$79, $Hash_values$81;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
-    self.$include($$($nesting, 'Enumerable'));
+    self.$include($$$('Enumerable'));
     self.$$prototype.$$is_hash = true;
-    Opal.defs(self, '$[]', $Hash_$$$1 = function($a) {
+    $defs(self, '$[]', function $Hash_$$$1($a) {
       var $post_args, argv, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       argv = $post_args;;
       
       var hash, argc = argv.length, i;
 
       if (argc === 1) {
-        hash = $$($nesting, 'Opal')['$coerce_to?'](argv['$[]'](0), $$($nesting, 'Hash'), "to_hash");
+        hash = $Opal['$coerce_to?'](argv['$[]'](0), $$$('Hash'), "to_hash");
         if (hash !== nil) {
           return self.$allocate()['$merge!'](hash);
         }
 
-        argv = $$($nesting, 'Opal')['$coerce_to?'](argv['$[]'](0), $$($nesting, 'Array'), "to_ary");
+        argv = $Opal['$coerce_to?'](argv['$[]'](0), $$$('Array'), "to_ary");
         if (argv === nil) {
-          self.$raise($$($nesting, 'ArgumentError'), "odd number of arguments for Hash")
+          $Kernel.$raise($$$('ArgumentError'), "odd number of arguments for Hash")
         }
 
         argc = argv.length;
@@ -15763,7 +15767,7 @@ Opal.modules["corelib/hash"] = function(Opal) {
             hash.$store(argv[i][0], argv[i][1]);
             break;
           default:
-            self.$raise($$($nesting, 'ArgumentError'), "" + "invalid number of elements (" + (argv[i].length) + " for 1..2)")
+            $Kernel.$raise($$$('ArgumentError'), "invalid number of elements (" + (argv[i].length) + " for 1..2)")
           }
         }
 
@@ -15771,7 +15775,7 @@ Opal.modules["corelib/hash"] = function(Opal) {
       }
 
       if (argc % 2 !== 0) {
-        self.$raise($$($nesting, 'ArgumentError'), "odd number of arguments for Hash")
+        $Kernel.$raise($$$('ArgumentError'), "odd number of arguments for Hash")
       }
 
       hash = self.$allocate();
@@ -15782,47 +15786,45 @@ Opal.modules["corelib/hash"] = function(Opal) {
 
       return hash;
     ;
-    }, $Hash_$$$1.$$arity = -1);
-    Opal.defs(self, '$allocate', $Hash_allocate$2 = function $$allocate() {
+    }, -1);
+    $defs(self, '$allocate', function $$allocate() {
       var self = this;
 
       
       var hash = new self.$$constructor();
 
-      Opal.hash_init(hash);
+      $hash_init(hash);
 
       hash.$$none = nil;
       hash.$$proc = nil;
 
       return hash;
     
-    }, $Hash_allocate$2.$$arity = 0);
-    Opal.defs(self, '$try_convert', $Hash_try_convert$3 = function $$try_convert(obj) {
-      var self = this;
-
-      return $$($nesting, 'Opal')['$coerce_to?'](obj, $$($nesting, 'Hash'), "to_hash")
-    }, $Hash_try_convert$3.$$arity = 1);
+    }, 0);
+    $defs(self, '$try_convert', function $$try_convert(obj) {
+      
+      return $Opal['$coerce_to?'](obj, $$$('Hash'), "to_hash")
+    }, 1);
     
-    Opal.def(self, '$initialize', $Hash_initialize$4 = function $$initialize(defaults) {
-      var $iter = $Hash_initialize$4.$$p, block = $iter || nil, self = this;
+    $def(self, '$initialize', function $$initialize(defaults) {
+      var block = $$initialize.$$p || nil, self = this;
 
-      if ($iter) $Hash_initialize$4.$$p = null;
-      
+      delete $$initialize.$$p;
       
-      if ($iter) $Hash_initialize$4.$$p = null;;
+      ;
       ;
       
       if (defaults !== undefined && block !== nil) {
-        self.$raise($$($nesting, 'ArgumentError'), "wrong number of arguments (1 for 0)")
+        $Kernel.$raise($$$('ArgumentError'), "wrong number of arguments (1 for 0)")
       }
       self.$$none = (defaults === undefined ? nil : defaults);
       self.$$proc = block;
 
       return self;
     ;
-    }, $Hash_initialize$4.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$==', $Hash_$eq_eq$5 = function(other) {
+    $def(self, '$==', function $Hash_$eq_eq$2(other) {
       var self = this;
 
       
@@ -15846,7 +15848,7 @@ Opal.modules["corelib/hash"] = function(Opal) {
           other_value = other.$$smap[key];
         } else {
           value = key.value;
-          other_value = Opal.hash_get(other, key.key);
+          other_value = $hash_get(other, key.key);
         }
 
         if (other_value === undefined || !value['$eql?'](other_value)) {
@@ -15856,74 +15858,70 @@ Opal.modules["corelib/hash"] = function(Opal) {
 
       return true;
     
-    }, $Hash_$eq_eq$5.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$>=', $Hash_$gt_eq$6 = function(other) {
-      var $$7, self = this, result = nil;
+    $def(self, '$>=', function $Hash_$gt_eq$3(other) {
+      var self = this, result = nil;
 
       
-      other = $$($nesting, 'Opal')['$coerce_to!'](other, $$($nesting, 'Hash'), "to_hash");
+      other = $Opal['$coerce_to!'](other, $$$('Hash'), "to_hash");
       
       if (self.$$keys.length < other.$$keys.length) {
         return false
       }
     ;
       result = true;
-      $send(other, 'each', [], ($$7 = function(other_key, other_val){var self = $$7.$$s == null ? this : $$7.$$s, val = nil;
+      $send(other, 'each', [], function $$4(other_key, other_val){var self = $$4.$$s == null ? this : $$4.$$s, val = nil;
 
         
         
-        if (other_key == null) {
-          other_key = nil;
-        };
+        if (other_key == null) other_key = nil;;
         
-        if (other_val == null) {
-          other_val = nil;
-        };
+        if (other_val == null) other_val = nil;;
         val = self.$fetch(other_key, null);
         
         if (val == null || val !== other_val) {
           result = false;
           return;
         }
-      ;}, $$7.$$s = self, $$7.$$arity = 2, $$7));
+      ;}, {$$arity: 2, $$s: self});
       return result;
-    }, $Hash_$gt_eq$6.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$>', $Hash_$gt$8 = function(other) {
+    $def(self, '$>', function $Hash_$gt$5(other) {
       var self = this;
 
       
-      other = $$($nesting, 'Opal')['$coerce_to!'](other, $$($nesting, 'Hash'), "to_hash");
+      other = $Opal['$coerce_to!'](other, $$$('Hash'), "to_hash");
       
       if (self.$$keys.length <= other.$$keys.length) {
         return false
       }
     ;
       return $rb_ge(self, other);
-    }, $Hash_$gt$8.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$<', $Hash_$lt$9 = function(other) {
+    $def(self, '$<', function $Hash_$lt$6(other) {
       var self = this;
 
       
-      other = $$($nesting, 'Opal')['$coerce_to!'](other, $$($nesting, 'Hash'), "to_hash");
+      other = $Opal['$coerce_to!'](other, $$$('Hash'), "to_hash");
       return $rb_gt(other, self);
-    }, $Hash_$lt$9.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$<=', $Hash_$lt_eq$10 = function(other) {
+    $def(self, '$<=', function $Hash_$lt_eq$7(other) {
       var self = this;
 
       
-      other = $$($nesting, 'Opal')['$coerce_to!'](other, $$($nesting, 'Hash'), "to_hash");
+      other = $Opal['$coerce_to!'](other, $$$('Hash'), "to_hash");
       return $rb_ge(other, self);
-    }, $Hash_$lt_eq$10.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$[]', $Hash_$$$11 = function(key) {
+    $def(self, '$[]', function $Hash_$$$8(key) {
       var self = this;
 
       
-      var value = Opal.hash_get(self, key);
+      var value = $hash_get(self, key);
 
       if (value !== undefined) {
         return value;
@@ -15931,18 +15929,18 @@ Opal.modules["corelib/hash"] = function(Opal) {
 
       return self.$default(key);
     
-    }, $Hash_$$$11.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$[]=', $Hash_$$$eq$12 = function(key, value) {
+    $def(self, '$[]=', function $Hash_$$$eq$9(key, value) {
       var self = this;
 
       
-      Opal.hash_put(self, key, value);
+      $hash_put(self, key, value);
       return value;
     
-    }, $Hash_$$$eq$12.$$arity = 2);
+    }, 2);
     
-    Opal.def(self, '$assoc', $Hash_assoc$13 = function $$assoc(object) {
+    $def(self, '$assoc', function $$assoc(object) {
       var self = this;
 
       
@@ -15962,35 +15960,35 @@ Opal.modules["corelib/hash"] = function(Opal) {
 
       return nil;
     
-    }, $Hash_assoc$13.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$clear', $Hash_clear$14 = function $$clear() {
+    $def(self, '$clear', function $$clear() {
       var self = this;
 
       
-      Opal.hash_init(self);
+      $hash_init(self);
       return self;
     
-    }, $Hash_clear$14.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$clone', $Hash_clone$15 = function $$clone() {
+    $def(self, '$clone', function $$clone() {
       var self = this;
 
       
       var hash = new self.$$class();
 
-      Opal.hash_init(hash);
+      $hash_init(hash);
       Opal.hash_clone(self, hash);
 
       return hash;
     
-    }, $Hash_clone$15.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$compact', $Hash_compact$16 = function $$compact() {
+    $def(self, '$compact', function $$compact() {
       var self = this;
 
       
-      var hash = Opal.hash();
+      var hash = $hash();
 
       for (var i = 0, keys = self.$$keys, length = keys.length, key, value, obj; i < length; i++) {
         key = keys[i];
@@ -16003,15 +16001,15 @@ Opal.modules["corelib/hash"] = function(Opal) {
         }
 
         if (value !== nil) {
-          Opal.hash_put(hash, key, value);
+          $hash_put(hash, key, value);
         }
       }
 
       return hash;
     
-    }, $Hash_compact$16.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$compact!', $Hash_compact$excl$17 = function() {
+    $def(self, '$compact!', function $Hash_compact$excl$10() {
       var self = this;
 
       
@@ -16028,7 +16026,7 @@ Opal.modules["corelib/hash"] = function(Opal) {
         }
 
         if (value === nil) {
-          if (Opal.hash_delete(self, key) !== undefined) {
+          if ($hash_delete(self, key) !== undefined) {
             changes_were_made = true;
             length--;
             i--;
@@ -16038,9 +16036,9 @@ Opal.modules["corelib/hash"] = function(Opal) {
 
       return changes_were_made ? self : nil;
     
-    }, $Hash_compact$excl$17.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$compare_by_identity', $Hash_compare_by_identity$18 = function $$compare_by_identity() {
+    $def(self, '$compare_by_identity', function $$compare_by_identity() {
       var self = this;
 
       
@@ -16056,7 +16054,7 @@ Opal.modules["corelib/hash"] = function(Opal) {
       for(i = 0, ii = keys.length; i < ii; i++) {
         key = keys[i];
         if (!key.$$is_string) key = key.key;
-        Opal.hash_put(identity_hash, key, Opal.hash_get(self, key));
+        $hash_put(identity_hash, key, $hash_get(self, key));
       }
 
       self.$$by_identity = true;
@@ -16064,15 +16062,15 @@ Opal.modules["corelib/hash"] = function(Opal) {
       self.$$smap = identity_hash.$$smap;
       return self;
     
-    }, $Hash_compare_by_identity$18.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$compare_by_identity?', $Hash_compare_by_identity$ques$19 = function() {
+    $def(self, '$compare_by_identity?', function $Hash_compare_by_identity$ques$11() {
       var self = this;
 
       return self.$$by_identity === true;
-    }, $Hash_compare_by_identity$ques$19.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$default', $Hash_default$20 = function(key) {
+    $def(self, '$default', function $Hash_default$12(key) {
       var self = this;
 
       
@@ -16086,9 +16084,9 @@ Opal.modules["corelib/hash"] = function(Opal) {
       }
       return self.$$none;
     ;
-    }, $Hash_default$20.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$default=', $Hash_default$eq$21 = function(object) {
+    $def(self, '$default=', function $Hash_default$eq$13(object) {
       var self = this;
 
       
@@ -16097,9 +16095,9 @@ Opal.modules["corelib/hash"] = function(Opal) {
 
       return object;
     
-    }, $Hash_default$eq$21.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$default_proc', $Hash_default_proc$22 = function $$default_proc() {
+    $def(self, '$default_proc', function $$default_proc() {
       var self = this;
 
       
@@ -16108,19 +16106,19 @@ Opal.modules["corelib/hash"] = function(Opal) {
       }
       return nil;
     
-    }, $Hash_default_proc$22.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$default_proc=', $Hash_default_proc$eq$23 = function(default_proc) {
+    $def(self, '$default_proc=', function $Hash_default_proc$eq$14(default_proc) {
       var self = this;
 
       
       var proc = default_proc;
 
       if (proc !== nil) {
-        proc = $$($nesting, 'Opal')['$coerce_to!'](proc, $$($nesting, 'Proc'), "to_proc");
+        proc = $Opal['$coerce_to!'](proc, $$$('Proc'), "to_proc");
 
         if ((proc)['$lambda?']() && (proc).$arity().$abs() !== 2) {
-          self.$raise($$($nesting, 'TypeError'), "default_proc takes two arguments");
+          $Kernel.$raise($$$('TypeError'), "default_proc takes two arguments");
         }
       }
 
@@ -16129,17 +16127,16 @@ Opal.modules["corelib/hash"] = function(Opal) {
 
       return default_proc;
     
-    }, $Hash_default_proc$eq$23.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$delete', $Hash_delete$24 = function(key) {
-      var $iter = $Hash_delete$24.$$p, block = $iter || nil, self = this;
+    $def(self, '$delete', function $Hash_delete$15(key) {
+      var block = $Hash_delete$15.$$p || nil, self = this;
 
-      if ($iter) $Hash_delete$24.$$p = null;
-      
+      delete $Hash_delete$15.$$p;
       
-      if ($iter) $Hash_delete$24.$$p = null;;
+      ;
       
-      var value = Opal.hash_delete(self, key);
+      var value = $hash_delete(self, key);
 
       if (value !== undefined) {
         return value;
@@ -16151,20 +16148,18 @@ Opal.modules["corelib/hash"] = function(Opal) {
 
       return nil;
     ;
-    }, $Hash_delete$24.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$delete_if', $Hash_delete_if$25 = function $$delete_if() {
-      var $iter = $Hash_delete_if$25.$$p, block = $iter || nil, $$26, self = this;
+    $def(self, '$delete_if', function $$delete_if() {
+      var block = $$delete_if.$$p || nil, self = this;
 
-      if ($iter) $Hash_delete_if$25.$$p = null;
-      
+      delete $$delete_if.$$p;
       
-      if ($iter) $Hash_delete_if$25.$$p = null;;
-      if ($truthy(block)) {
-      } else {
-        return $send(self, 'enum_for', ["delete_if"], ($$26 = function(){var self = $$26.$$s == null ? this : $$26.$$s;
+      ;
+      if (!$truthy(block)) {
+        return $send(self, 'enum_for', ["delete_if"], function $$16(){var self = $$16.$$s == null ? this : $$16.$$s;
 
-          return self.$size()}, $$26.$$s = self, $$26.$$arity = 0, $$26))
+          return self.$size()}, {$$arity: 0, $$s: self})
       };
       
       for (var i = 0, keys = self.$$keys, length = keys.length, key, value, obj; i < length; i++) {
@@ -16180,7 +16175,7 @@ Opal.modules["corelib/hash"] = function(Opal) {
         obj = block(key, value);
 
         if (obj !== false && obj !== nil) {
-          if (Opal.hash_delete(self, key) !== undefined) {
+          if ($hash_delete(self, key) !== undefined) {
             length--;
             i--;
           }
@@ -16189,15 +16184,14 @@ Opal.modules["corelib/hash"] = function(Opal) {
 
       return self;
     ;
-    }, $Hash_delete_if$25.$$arity = 0);
-    $alias(self, "dup", "clone");
+    }, 0);
     
-    Opal.def(self, '$dig', $Hash_dig$27 = function $$dig(key, $a) {
+    $def(self, '$dig', function $$dig(key, $a) {
       var $post_args, keys, self = this, item = nil;
 
       
       
-      $post_args = Opal.slice.call(arguments, 1, arguments.length);
+      $post_args = Opal.slice.call(arguments, 1);
       
       keys = $post_args;;
       item = self['$[]'](key);
@@ -16206,28 +16200,25 @@ Opal.modules["corelib/hash"] = function(Opal) {
         return item;
       }
     ;
-      if ($truthy(item['$respond_to?']("dig"))) {
-      } else {
-        self.$raise($$($nesting, 'TypeError'), "" + (item.$class()) + " does not have #dig method")
+      if (!$truthy(item['$respond_to?']("dig"))) {
+        $Kernel.$raise($$$('TypeError'), "" + (item.$class()) + " does not have #dig method")
       };
-      return $send(item, 'dig', Opal.to_a(keys));
-    }, $Hash_dig$27.$$arity = -2);
+      return $send(item, 'dig', $to_a(keys));
+    }, -2);
     
-    Opal.def(self, '$each', $Hash_each$28 = function $$each() {
-      var $iter = $Hash_each$28.$$p, block = $iter || nil, $$29, self = this;
+    $def(self, '$each', function $$each() {
+      var block = $$each.$$p || nil, self = this;
 
-      if ($iter) $Hash_each$28.$$p = null;
-      
+      delete $$each.$$p;
       
-      if ($iter) $Hash_each$28.$$p = null;;
-      if ($truthy(block)) {
-      } else {
-        return $send(self, 'enum_for', ["each"], ($$29 = function(){var self = $$29.$$s == null ? this : $$29.$$s;
+      ;
+      if (!$truthy(block)) {
+        return $send(self, 'enum_for', ["each"], function $$17(){var self = $$17.$$s == null ? this : $$17.$$s;
 
-          return self.$size()}, $$29.$$s = self, $$29.$$arity = 0, $$29))
+          return self.$size()}, {$$arity: 0, $$s: self})
       };
       
-      for (var i = 0, keys = self.$$keys, length = keys.length, key, value; i < length; i++) {
+      for (var i = 0, keys = self.$$keys.slice(), length = keys.length, key, value; i < length; i++) {
         key = keys[i];
 
         if (key.$$is_string) {
@@ -16237,28 +16228,26 @@ Opal.modules["corelib/hash"] = function(Opal) {
           key = key.key;
         }
 
-        Opal.yield1(block, [key, value]);
+        $yield1(block, [key, value]);
       }
 
       return self;
     ;
-    }, $Hash_each$28.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$each_key', $Hash_each_key$30 = function $$each_key() {
-      var $iter = $Hash_each_key$30.$$p, block = $iter || nil, $$31, self = this;
+    $def(self, '$each_key', function $$each_key() {
+      var block = $$each_key.$$p || nil, self = this;
 
-      if ($iter) $Hash_each_key$30.$$p = null;
+      delete $$each_key.$$p;
       
-      
-      if ($iter) $Hash_each_key$30.$$p = null;;
-      if ($truthy(block)) {
-      } else {
-        return $send(self, 'enum_for', ["each_key"], ($$31 = function(){var self = $$31.$$s == null ? this : $$31.$$s;
+      ;
+      if (!$truthy(block)) {
+        return $send(self, 'enum_for', ["each_key"], function $$18(){var self = $$18.$$s == null ? this : $$18.$$s;
 
-          return self.$size()}, $$31.$$s = self, $$31.$$arity = 0, $$31))
+          return self.$size()}, {$$arity: 0, $$s: self})
       };
       
-      for (var i = 0, keys = self.$$keys, length = keys.length, key; i < length; i++) {
+      for (var i = 0, keys = self.$$keys.slice(), length = keys.length, key; i < length; i++) {
         key = keys[i];
 
         block(key.$$is_string ? key : key.key);
@@ -16266,21 +16255,18 @@ Opal.modules["corelib/hash"] = function(Opal) {
 
       return self;
     ;
-    }, $Hash_each_key$30.$$arity = 0);
-    $alias(self, "each_pair", "each");
+    }, 0);
     
-    Opal.def(self, '$each_value', $Hash_each_value$32 = function $$each_value() {
-      var $iter = $Hash_each_value$32.$$p, block = $iter || nil, $$33, self = this;
+    $def(self, '$each_value', function $$each_value() {
+      var block = $$each_value.$$p || nil, self = this;
 
-      if ($iter) $Hash_each_value$32.$$p = null;
+      delete $$each_value.$$p;
       
-      
-      if ($iter) $Hash_each_value$32.$$p = null;;
-      if ($truthy(block)) {
-      } else {
-        return $send(self, 'enum_for', ["each_value"], ($$33 = function(){var self = $$33.$$s == null ? this : $$33.$$s;
+      ;
+      if (!$truthy(block)) {
+        return $send(self, 'enum_for', ["each_value"], function $$19(){var self = $$19.$$s == null ? this : $$19.$$s;
 
-          return self.$size()}, $$33.$$s = self, $$33.$$arity = 0, $$33))
+          return self.$size()}, {$$arity: 0, $$s: self})
       };
       
       for (var i = 0, keys = self.$$keys, length = keys.length, key; i < length; i++) {
@@ -16291,55 +16277,51 @@ Opal.modules["corelib/hash"] = function(Opal) {
 
       return self;
     ;
-    }, $Hash_each_value$32.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$empty?', $Hash_empty$ques$34 = function() {
+    $def(self, '$empty?', function $Hash_empty$ques$20() {
       var self = this;
 
       return self.$$keys.length === 0;
-    }, $Hash_empty$ques$34.$$arity = 0);
-    $alias(self, "eql?", "==");
+    }, 0);
     
-    Opal.def(self, '$except', $Hash_except$35 = function $$except($a) {
+    $def(self, '$except', function $$except($a) {
       var $post_args, keys, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       keys = $post_args;;
-      return $send(self.$dup(), 'except!', Opal.to_a(keys));
-    }, $Hash_except$35.$$arity = -1);
+      return $send(self.$dup(), 'except!', $to_a(keys));
+    }, -1);
     
-    Opal.def(self, '$except!', $Hash_except$excl$36 = function($a) {
-      var $post_args, keys, $$37, self = this;
+    $def(self, '$except!', function $Hash_except$excl$21($a) {
+      var $post_args, keys, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       keys = $post_args;;
-      $send(keys, 'each', [], ($$37 = function(key){var self = $$37.$$s == null ? this : $$37.$$s;
+      $send(keys, 'each', [], function $$22(key){var self = $$22.$$s == null ? this : $$22.$$s;
 
         
         
-        if (key == null) {
-          key = nil;
-        };
-        return self.$delete(key);}, $$37.$$s = self, $$37.$$arity = 1, $$37));
+        if (key == null) key = nil;;
+        return self.$delete(key);}, {$$arity: 1, $$s: self});
       return self;
-    }, $Hash_except$excl$36.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$fetch', $Hash_fetch$38 = function $$fetch(key, defaults) {
-      var $iter = $Hash_fetch$38.$$p, block = $iter || nil, self = this;
+    $def(self, '$fetch', function $$fetch(key, defaults) {
+      var block = $$fetch.$$p || nil, self = this;
 
-      if ($iter) $Hash_fetch$38.$$p = null;
+      delete $$fetch.$$p;
       
-      
-      if ($iter) $Hash_fetch$38.$$p = null;;
+      ;
       ;
       
-      var value = Opal.hash_get(self, key);
+      var value = $hash_get(self, key);
 
       if (value !== undefined) {
         return value;
@@ -16353,39 +16335,34 @@ Opal.modules["corelib/hash"] = function(Opal) {
         return defaults;
       }
     ;
-      return self.$raise($$($nesting, 'KeyError').$new("" + "key not found: " + (key.$inspect()), $hash2(["key", "receiver"], {"key": key, "receiver": self})));
-    }, $Hash_fetch$38.$$arity = -2);
+      return $Kernel.$raise($$$('KeyError').$new("key not found: " + (key.$inspect()), $hash2(["key", "receiver"], {"key": key, "receiver": self})));
+    }, -2);
     
-    Opal.def(self, '$fetch_values', $Hash_fetch_values$39 = function $$fetch_values($a) {
-      var $iter = $Hash_fetch_values$39.$$p, block = $iter || nil, $post_args, keys, $$40, self = this;
+    $def(self, '$fetch_values', function $$fetch_values($a) {
+      var block = $$fetch_values.$$p || nil, $post_args, keys, self = this;
 
-      if ($iter) $Hash_fetch_values$39.$$p = null;
+      delete $$fetch_values.$$p;
       
+      ;
       
-      if ($iter) $Hash_fetch_values$39.$$p = null;;
-      
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       keys = $post_args;;
-      return $send(keys, 'map', [], ($$40 = function(key){var self = $$40.$$s == null ? this : $$40.$$s;
+      return $send(keys, 'map', [], function $$23(key){var self = $$23.$$s == null ? this : $$23.$$s;
 
         
         
-        if (key == null) {
-          key = nil;
-        };
-        return $send(self, 'fetch', [key], block.$to_proc());}, $$40.$$s = self, $$40.$$arity = 1, $$40));
-    }, $Hash_fetch_values$39.$$arity = -1);
+        if (key == null) key = nil;;
+        return $send(self, 'fetch', [key], block.$to_proc());}, {$$arity: 1, $$s: self});
+    }, -1);
     
-    Opal.def(self, '$flatten', $Hash_flatten$41 = function $$flatten(level) {
+    $def(self, '$flatten', function $$flatten(level) {
       var self = this;
 
       
       
-      if (level == null) {
-        level = 1;
-      };
-      level = $$($nesting, 'Opal')['$coerce_to!'](level, $$($nesting, 'Integer'), "to_int");
+      if (level == null) level = 1;;
+      level = $Opal['$coerce_to!'](level, $$$('Integer'), "to_int");
       
       var result = [];
 
@@ -16416,15 +16393,15 @@ Opal.modules["corelib/hash"] = function(Opal) {
 
       return result;
     ;
-    }, $Hash_flatten$41.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$has_key?', $Hash_has_key$ques$42 = function(key) {
+    $def(self, '$has_key?', function $Hash_has_key$ques$24(key) {
       var self = this;
 
-      return Opal.hash_get(self, key) !== undefined;
-    }, $Hash_has_key$ques$42.$$arity = 1);
+      return $hash_get(self, key) !== undefined;
+    }, 1);
     
-    Opal.def(self, '$has_value?', $Hash_has_value$ques$43 = function(value) {
+    $def(self, '$has_value?', function $Hash_has_value$ques$25(value) {
       var self = this;
 
       
@@ -16438,9 +16415,9 @@ Opal.modules["corelib/hash"] = function(Opal) {
 
       return false;
     
-    }, $Hash_has_value$ques$43.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$hash', $Hash_hash$44 = function $$hash() {
+    $def(self, '$hash', function $$hash() {
       var self = this;
 
       
@@ -16485,10 +16462,9 @@ Opal.modules["corelib/hash"] = function(Opal) {
         }
       }
     
-    }, $Hash_hash$44.$$arity = 0);
-    $alias(self, "include?", "has_key?");
+    }, 0);
     
-    Opal.def(self, '$index', $Hash_index$45 = function $$index(object) {
+    $def(self, '$index', function $$index(object) {
       var self = this;
 
       
@@ -16509,14 +16485,14 @@ Opal.modules["corelib/hash"] = function(Opal) {
 
       return nil;
     
-    }, $Hash_index$45.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$indexes', $Hash_indexes$46 = function $$indexes($a) {
+    $def(self, '$indexes', function $$indexes($a) {
       var $post_args, args, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
       
@@ -16524,7 +16500,7 @@ Opal.modules["corelib/hash"] = function(Opal) {
 
       for (var i = 0, length = args.length, key, value; i < length; i++) {
         key = args[i];
-        value = Opal.hash_get(self, key);
+        value = $hash_get(self, key);
 
         if (value === undefined) {
           result.push(self.$default());
@@ -16536,19 +16512,22 @@ Opal.modules["corelib/hash"] = function(Opal) {
 
       return result;
     ;
-    }, $Hash_indexes$46.$$arity = -1);
-    $alias(self, "indices", "indexes");
+    }, -1);
     var inspect_ids;
     
-    Opal.def(self, '$inspect', $Hash_inspect$47 = function $$inspect() {
+    $def(self, '$inspect', function $$inspect() {
       var self = this;
 
       
+      
       var top = (inspect_ids === undefined),
           hash_id = self.$object_id(),
           result = [];
-
-      try {
+    ;
+      
+      return (function() { try {
+      
+      
         if (top) {
           inspect_ids = {};
         }
@@ -16569,24 +16548,25 @@ Opal.modules["corelib/hash"] = function(Opal) {
             key = key.key;
           }
 
-          result.push(key.$inspect() + '=>' + value.$inspect());
+          key = $$('Opal').$inspect(key)
+          value = $$('Opal').$inspect(value)
+
+          result.push(key + '=>' + value);
         }
 
         return '{' + result.join(', ') + '}';
-
+      ;
+      return nil;
       } finally {
-        if (top) {
-          inspect_ids = undefined;
-        }
-      }
-    
-    }, $Hash_inspect$47.$$arity = 0);
+        if (top) inspect_ids = undefined
+      }; })();;
+    }, 0);
     
-    Opal.def(self, '$invert', $Hash_invert$48 = function $$invert() {
+    $def(self, '$invert', function $$invert() {
       var self = this;
 
       
-      var hash = Opal.hash();
+      var hash = $hash();
 
       for (var i = 0, keys = self.$$keys, length = keys.length, key, value; i < length; i++) {
         key = keys[i];
@@ -16598,25 +16578,23 @@ Opal.modules["corelib/hash"] = function(Opal) {
           key = key.key;
         }
 
-        Opal.hash_put(hash, value, key);
+        $hash_put(hash, value, key);
       }
 
       return hash;
     
-    }, $Hash_invert$48.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$keep_if', $Hash_keep_if$49 = function $$keep_if() {
-      var $iter = $Hash_keep_if$49.$$p, block = $iter || nil, $$50, self = this;
+    $def(self, '$keep_if', function $$keep_if() {
+      var block = $$keep_if.$$p || nil, self = this;
 
-      if ($iter) $Hash_keep_if$49.$$p = null;
+      delete $$keep_if.$$p;
       
-      
-      if ($iter) $Hash_keep_if$49.$$p = null;;
-      if ($truthy(block)) {
-      } else {
-        return $send(self, 'enum_for', ["keep_if"], ($$50 = function(){var self = $$50.$$s == null ? this : $$50.$$s;
+      ;
+      if (!$truthy(block)) {
+        return $send(self, 'enum_for', ["keep_if"], function $$26(){var self = $$26.$$s == null ? this : $$26.$$s;
 
-          return self.$size()}, $$50.$$s = self, $$50.$$arity = 0, $$50))
+          return self.$size()}, {$$arity: 0, $$s: self})
       };
       
       for (var i = 0, keys = self.$$keys, length = keys.length, key, value, obj; i < length; i++) {
@@ -16632,7 +16610,7 @@ Opal.modules["corelib/hash"] = function(Opal) {
         obj = block(key, value);
 
         if (obj === false || obj === nil) {
-          if (Opal.hash_delete(self, key) !== undefined) {
+          if ($hash_delete(self, key) !== undefined) {
             length--;
             i--;
           }
@@ -16641,11 +16619,9 @@ Opal.modules["corelib/hash"] = function(Opal) {
 
       return self;
     ;
-    }, $Hash_keep_if$49.$$arity = 0);
-    $alias(self, "key", "index");
-    $alias(self, "key?", "has_key?");
+    }, 0);
     
-    Opal.def(self, '$keys', $Hash_keys$51 = function $$keys() {
+    $def(self, '$keys', function $$keys() {
       var self = this;
 
       
@@ -16663,44 +16639,41 @@ Opal.modules["corelib/hash"] = function(Opal) {
 
       return result;
     
-    }, $Hash_keys$51.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$length', $Hash_length$52 = function $$length() {
+    $def(self, '$length', function $$length() {
       var self = this;
 
       return self.$$keys.length;
-    }, $Hash_length$52.$$arity = 0);
-    $alias(self, "member?", "has_key?");
+    }, 0);
     
-    Opal.def(self, '$merge', $Hash_merge$53 = function $$merge($a) {
-      var $iter = $Hash_merge$53.$$p, block = $iter || nil, $post_args, others, self = this;
+    $def(self, '$merge', function $$merge($a) {
+      var block = $$merge.$$p || nil, $post_args, others, self = this;
 
-      if ($iter) $Hash_merge$53.$$p = null;
-      
+      delete $$merge.$$p;
       
-      if ($iter) $Hash_merge$53.$$p = null;;
+      ;
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       others = $post_args;;
-      return $send(self.$dup(), 'merge!', Opal.to_a(others), block.$to_proc());
-    }, $Hash_merge$53.$$arity = -1);
+      return $send(self.$dup(), 'merge!', $to_a(others), block.$to_proc());
+    }, -1);
     
-    Opal.def(self, '$merge!', $Hash_merge$excl$54 = function($a) {
-      var $iter = $Hash_merge$excl$54.$$p, block = $iter || nil, $post_args, others, self = this;
+    $def(self, '$merge!', function $Hash_merge$excl$27($a) {
+      var block = $Hash_merge$excl$27.$$p || nil, $post_args, others, self = this;
 
-      if ($iter) $Hash_merge$excl$54.$$p = null;
-      
+      delete $Hash_merge$excl$27.$$p;
       
-      if ($iter) $Hash_merge$excl$54.$$p = null;;
+      ;
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       others = $post_args;;
       
       var i, j, other, other_keys, length, key, value, other_value;
       for (i = 0; i < others.length; ++i) {
-        other = $$($nesting, 'Opal')['$coerce_to!'](others[i], $$($nesting, 'Hash'), "to_hash");
+        other = $Opal['$coerce_to!'](others[i], $$$('Hash'), "to_hash");
         other_keys = other.$$keys, length = other_keys.length;
 
         if (block === nil) {
@@ -16714,7 +16687,7 @@ Opal.modules["corelib/hash"] = function(Opal) {
               key = key.key;
             }
 
-            Opal.hash_put(self, key, other_value);
+            $hash_put(self, key, other_value);
           }
         } else {
           for (j = 0; j < length; j++) {
@@ -16727,23 +16700,23 @@ Opal.modules["corelib/hash"] = function(Opal) {
               key = key.key;
             }
 
-            value = Opal.hash_get(self, key);
+            value = $hash_get(self, key);
 
             if (value === undefined) {
-              Opal.hash_put(self, key, other_value);
+              $hash_put(self, key, other_value);
               continue;
             }
 
-            Opal.hash_put(self, key, block(key, value, other_value));
+            $hash_put(self, key, block(key, value, other_value));
           }
         }
       }
 
       return self;
     ;
-    }, $Hash_merge$excl$54.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$rassoc', $Hash_rassoc$55 = function $$rassoc(object) {
+    $def(self, '$rassoc', function $$rassoc(object) {
       var self = this;
 
       
@@ -16764,32 +16737,30 @@ Opal.modules["corelib/hash"] = function(Opal) {
 
       return nil;
     
-    }, $Hash_rassoc$55.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$rehash', $Hash_rehash$56 = function $$rehash() {
+    $def(self, '$rehash', function $$rehash() {
       var self = this;
 
       
       Opal.hash_rehash(self);
       return self;
     
-    }, $Hash_rehash$56.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$reject', $Hash_reject$57 = function $$reject() {
-      var $iter = $Hash_reject$57.$$p, block = $iter || nil, $$58, self = this;
+    $def(self, '$reject', function $$reject() {
+      var block = $$reject.$$p || nil, self = this;
 
-      if ($iter) $Hash_reject$57.$$p = null;
-      
+      delete $$reject.$$p;
       
-      if ($iter) $Hash_reject$57.$$p = null;;
-      if ($truthy(block)) {
-      } else {
-        return $send(self, 'enum_for', ["reject"], ($$58 = function(){var self = $$58.$$s == null ? this : $$58.$$s;
+      ;
+      if (!$truthy(block)) {
+        return $send(self, 'enum_for', ["reject"], function $$28(){var self = $$28.$$s == null ? this : $$28.$$s;
 
-          return self.$size()}, $$58.$$s = self, $$58.$$arity = 0, $$58))
+          return self.$size()}, {$$arity: 0, $$s: self})
       };
       
-      var hash = Opal.hash();
+      var hash = $hash();
 
       for (var i = 0, keys = self.$$keys, length = keys.length, key, value, obj; i < length; i++) {
         key = keys[i];
@@ -16804,26 +16775,24 @@ Opal.modules["corelib/hash"] = function(Opal) {
         obj = block(key, value);
 
         if (obj === false || obj === nil) {
-          Opal.hash_put(hash, key, value);
+          $hash_put(hash, key, value);
         }
       }
 
       return hash;
     ;
-    }, $Hash_reject$57.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$reject!', $Hash_reject$excl$59 = function() {
-      var $iter = $Hash_reject$excl$59.$$p, block = $iter || nil, $$60, self = this;
+    $def(self, '$reject!', function $Hash_reject$excl$29() {
+      var block = $Hash_reject$excl$29.$$p || nil, self = this;
 
-      if ($iter) $Hash_reject$excl$59.$$p = null;
+      delete $Hash_reject$excl$29.$$p;
       
-      
-      if ($iter) $Hash_reject$excl$59.$$p = null;;
-      if ($truthy(block)) {
-      } else {
-        return $send(self, 'enum_for', ["reject!"], ($$60 = function(){var self = $$60.$$s == null ? this : $$60.$$s;
+      ;
+      if (!$truthy(block)) {
+        return $send(self, 'enum_for', ["reject!"], function $$30(){var self = $$30.$$s == null ? this : $$30.$$s;
 
-          return self.$size()}, $$60.$$s = self, $$60.$$arity = 0, $$60))
+          return self.$size()}, {$$arity: 0, $$s: self})
       };
       
       var changes_were_made = false;
@@ -16841,7 +16810,7 @@ Opal.modules["corelib/hash"] = function(Opal) {
         obj = block(key, value);
 
         if (obj !== false && obj !== nil) {
-          if (Opal.hash_delete(self, key) !== undefined) {
+          if ($hash_delete(self, key) !== undefined) {
             changes_were_made = true;
             length--;
             i--;
@@ -16851,15 +16820,15 @@ Opal.modules["corelib/hash"] = function(Opal) {
 
       return changes_were_made ? self : nil;
     ;
-    }, $Hash_reject$excl$59.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$replace', $Hash_replace$61 = function $$replace(other) {
+    $def(self, '$replace', function $$replace(other) {
       var self = this, $writer = nil;
 
       
-      other = $$($nesting, 'Opal')['$coerce_to!'](other, $$($nesting, 'Hash'), "to_hash");
+      other = $Opal['$coerce_to!'](other, $$$('Hash'), "to_hash");
       
-      Opal.hash_init(self);
+      $hash_init(self);
 
       for (var i = 0, other_keys = other.$$keys, length = other_keys.length, key, value, other_value; i < length; i++) {
         key = other_keys[i];
@@ -16871,38 +16840,36 @@ Opal.modules["corelib/hash"] = function(Opal) {
           key = key.key;
         }
 
-        Opal.hash_put(self, key, other_value);
+        $hash_put(self, key, other_value);
       }
     ;
       if ($truthy(other.$default_proc())) {
         
         $writer = [other.$default_proc()];
-        $send(self, 'default_proc=', Opal.to_a($writer));
+        $send(self, 'default_proc=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];
       } else {
         
         $writer = [other.$default()];
-        $send(self, 'default=', Opal.to_a($writer));
+        $send(self, 'default=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];
       };
       return self;
-    }, $Hash_replace$61.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$select', $Hash_select$62 = function $$select() {
-      var $iter = $Hash_select$62.$$p, block = $iter || nil, $$63, self = this;
+    $def(self, '$select', function $$select() {
+      var block = $$select.$$p || nil, self = this;
 
-      if ($iter) $Hash_select$62.$$p = null;
+      delete $$select.$$p;
       
-      
-      if ($iter) $Hash_select$62.$$p = null;;
-      if ($truthy(block)) {
-      } else {
-        return $send(self, 'enum_for', ["select"], ($$63 = function(){var self = $$63.$$s == null ? this : $$63.$$s;
+      ;
+      if (!$truthy(block)) {
+        return $send(self, 'enum_for', ["select"], function $$31(){var self = $$31.$$s == null ? this : $$31.$$s;
 
-          return self.$size()}, $$63.$$s = self, $$63.$$arity = 0, $$63))
+          return self.$size()}, {$$arity: 0, $$s: self})
       };
       
-      var hash = Opal.hash();
+      var hash = $hash();
 
       for (var i = 0, keys = self.$$keys, length = keys.length, key, value, obj; i < length; i++) {
         key = keys[i];
@@ -16917,26 +16884,24 @@ Opal.modules["corelib/hash"] = function(Opal) {
         obj = block(key, value);
 
         if (obj !== false && obj !== nil) {
-          Opal.hash_put(hash, key, value);
+          $hash_put(hash, key, value);
         }
       }
 
       return hash;
     ;
-    }, $Hash_select$62.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$select!', $Hash_select$excl$64 = function() {
-      var $iter = $Hash_select$excl$64.$$p, block = $iter || nil, $$65, self = this;
+    $def(self, '$select!', function $Hash_select$excl$32() {
+      var block = $Hash_select$excl$32.$$p || nil, self = this;
 
-      if ($iter) $Hash_select$excl$64.$$p = null;
-      
+      delete $Hash_select$excl$32.$$p;
       
-      if ($iter) $Hash_select$excl$64.$$p = null;;
-      if ($truthy(block)) {
-      } else {
-        return $send(self, 'enum_for', ["select!"], ($$65 = function(){var self = $$65.$$s == null ? this : $$65.$$s;
+      ;
+      if (!$truthy(block)) {
+        return $send(self, 'enum_for', ["select!"], function $$33(){var self = $$33.$$s == null ? this : $$33.$$s;
 
-          return self.$size()}, $$65.$$s = self, $$65.$$arity = 0, $$65))
+          return self.$size()}, {$$arity: 0, $$s: self})
       };
       
       var result = nil;
@@ -16954,7 +16919,7 @@ Opal.modules["corelib/hash"] = function(Opal) {
         obj = block(key, value);
 
         if (obj === false || obj === nil) {
-          if (Opal.hash_delete(self, key) !== undefined) {
+          if ($hash_delete(self, key) !== undefined) {
             length--;
             i--;
           }
@@ -16964,11 +16929,9 @@ Opal.modules["corelib/hash"] = function(Opal) {
 
       return result;
     ;
-    }, $Hash_select$excl$64.$$arity = 0);
-    $alias(self, "filter", "select");
-    $alias(self, "filter!", "select!");
+    }, 0);
     
-    Opal.def(self, '$shift', $Hash_shift$66 = function $$shift() {
+    $def(self, '$shift', function $$shift() {
       var self = this;
 
       
@@ -16980,39 +16943,37 @@ Opal.modules["corelib/hash"] = function(Opal) {
 
         key = key.$$is_string ? key : key.key;
 
-        return [key, Opal.hash_delete(self, key)];
+        return [key, $hash_delete(self, key)];
       }
 
       return self.$default(nil);
     
-    }, $Hash_shift$66.$$arity = 0);
-    $alias(self, "size", "length");
+    }, 0);
     
-    Opal.def(self, '$slice', $Hash_slice$67 = function $$slice($a) {
+    $def(self, '$slice', function $$slice($a) {
       var $post_args, keys, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       keys = $post_args;;
       
-      var result = Opal.hash();
+      var result = $hash();
 
       for (var i = 0, length = keys.length; i < length; i++) {
-        var key = keys[i], value = Opal.hash_get(self, key);
+        var key = keys[i], value = $hash_get(self, key);
 
         if (value !== undefined) {
-          Opal.hash_put(result, key, value);
+          $hash_put(result, key, value);
         }
       }
 
       return result;
     ;
-    }, $Hash_slice$67.$$arity = -1);
-    $alias(self, "store", "[]=");
+    }, -1);
     
-    Opal.def(self, '$to_a', $Hash_to_a$68 = function $$to_a() {
+    $def(self, '$to_a', function $$to_a() {
       var self = this;
 
       
@@ -17033,17 +16994,17 @@ Opal.modules["corelib/hash"] = function(Opal) {
 
       return result;
     
-    }, $Hash_to_a$68.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_h', $Hash_to_h$69 = function $$to_h() {
-      var $iter = $Hash_to_h$69.$$p, block = $iter || nil, self = this;
+    $def(self, '$to_h', function $$to_h() {
+      var block = $$to_h.$$p || nil, self = this;
 
-      if ($iter) $Hash_to_h$69.$$p = null;
-      
+      delete $$to_h.$$p;
       
-      if ($iter) $Hash_to_h$69.$$p = null;;
+      ;
       if ((block !== nil)) {
-        return $send(self, 'map', [], block.$to_proc()).$to_h()};
+        return $send(self, 'map', [], block.$to_proc()).$to_h()
+      };
       
       if (self.$$class === Opal.Hash) {
         return self;
@@ -17051,50 +17012,47 @@ Opal.modules["corelib/hash"] = function(Opal) {
 
       var hash = new Opal.Hash();
 
-      Opal.hash_init(hash);
+      $hash_init(hash);
       Opal.hash_clone(self, hash);
 
       return hash;
     ;
-    }, $Hash_to_h$69.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_hash', $Hash_to_hash$70 = function $$to_hash() {
+    $def(self, '$to_hash', function $$to_hash() {
       var self = this;
 
       return self
-    }, $Hash_to_hash$70.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_proc', $Hash_to_proc$71 = function $$to_proc() {
-      var $$72, self = this;
+    $def(self, '$to_proc', function $$to_proc() {
+      var self = this;
 
-      return $send(self, 'proc', [], ($$72 = function(key){var self = $$72.$$s == null ? this : $$72.$$s;
+      return $send(self, 'proc', [], function $$34(key){var self = $$34.$$s == null ? this : $$34.$$s;
 
         
         ;
         
         if (key == null) {
-          self.$raise($$($nesting, 'ArgumentError'), "no key given")
+          $Kernel.$raise($$$('ArgumentError'), "no key given")
         }
       ;
-        return self['$[]'](key);}, $$72.$$s = self, $$72.$$arity = -1, $$72))
-    }, $Hash_to_proc$71.$$arity = 0);
-    $alias(self, "to_s", "inspect");
+        return self['$[]'](key);}, {$$arity: -1, $$s: self})
+    }, 0);
     
-    Opal.def(self, '$transform_keys', $Hash_transform_keys$73 = function $$transform_keys() {
-      var $iter = $Hash_transform_keys$73.$$p, block = $iter || nil, $$74, self = this;
+    $def(self, '$transform_keys', function $$transform_keys() {
+      var block = $$transform_keys.$$p || nil, self = this;
 
-      if ($iter) $Hash_transform_keys$73.$$p = null;
+      delete $$transform_keys.$$p;
       
-      
-      if ($iter) $Hash_transform_keys$73.$$p = null;;
-      if ($truthy(block)) {
-      } else {
-        return $send(self, 'enum_for', ["transform_keys"], ($$74 = function(){var self = $$74.$$s == null ? this : $$74.$$s;
+      ;
+      if (!$truthy(block)) {
+        return $send(self, 'enum_for', ["transform_keys"], function $$35(){var self = $$35.$$s == null ? this : $$35.$$s;
 
-          return self.$size()}, $$74.$$s = self, $$74.$$arity = 0, $$74))
+          return self.$size()}, {$$arity: 0, $$s: self})
       };
       
-      var result = Opal.hash();
+      var result = $hash();
 
       for (var i = 0, keys = self.$$keys, length = keys.length, key, value; i < length; i++) {
         key = keys[i];
@@ -17106,27 +17064,25 @@ Opal.modules["corelib/hash"] = function(Opal) {
           key = key.key;
         }
 
-        key = Opal.yield1(block, key);
+        key = $yield1(block, key);
 
-        Opal.hash_put(result, key, value);
+        $hash_put(result, key, value);
       }
 
       return result;
     ;
-    }, $Hash_transform_keys$73.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$transform_keys!', $Hash_transform_keys$excl$75 = function() {
-      var $iter = $Hash_transform_keys$excl$75.$$p, block = $iter || nil, $$76, self = this;
+    $def(self, '$transform_keys!', function $Hash_transform_keys$excl$36() {
+      var block = $Hash_transform_keys$excl$36.$$p || nil, self = this;
 
-      if ($iter) $Hash_transform_keys$excl$75.$$p = null;
+      delete $Hash_transform_keys$excl$36.$$p;
       
-      
-      if ($iter) $Hash_transform_keys$excl$75.$$p = null;;
-      if ($truthy(block)) {
-      } else {
-        return $send(self, 'enum_for', ["transform_keys!"], ($$76 = function(){var self = $$76.$$s == null ? this : $$76.$$s;
+      ;
+      if (!$truthy(block)) {
+        return $send(self, 'enum_for', ["transform_keys!"], function $$37(){var self = $$37.$$s == null ? this : $$37.$$s;
 
-          return self.$size()}, $$76.$$s = self, $$76.$$arity = 0, $$76))
+          return self.$size()}, {$$arity: 0, $$s: self})
       };
       
       var keys = Opal.slice.call(self.$$keys),
@@ -17142,31 +17098,29 @@ Opal.modules["corelib/hash"] = function(Opal) {
           key = key.key;
         }
 
-        new_key = Opal.yield1(block, key);
+        new_key = $yield1(block, key);
 
-        Opal.hash_delete(self, key);
-        Opal.hash_put(self, new_key, value);
+        $hash_delete(self, key);
+        $hash_put(self, new_key, value);
       }
 
       return self;
     ;
-    }, $Hash_transform_keys$excl$75.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$transform_values', $Hash_transform_values$77 = function $$transform_values() {
-      var $iter = $Hash_transform_values$77.$$p, block = $iter || nil, $$78, self = this;
+    $def(self, '$transform_values', function $$transform_values() {
+      var block = $$transform_values.$$p || nil, self = this;
 
-      if ($iter) $Hash_transform_values$77.$$p = null;
+      delete $$transform_values.$$p;
       
-      
-      if ($iter) $Hash_transform_values$77.$$p = null;;
-      if ($truthy(block)) {
-      } else {
-        return $send(self, 'enum_for', ["transform_values"], ($$78 = function(){var self = $$78.$$s == null ? this : $$78.$$s;
+      ;
+      if (!$truthy(block)) {
+        return $send(self, 'enum_for', ["transform_values"], function $$38(){var self = $$38.$$s == null ? this : $$38.$$s;
 
-          return self.$size()}, $$78.$$s = self, $$78.$$arity = 0, $$78))
+          return self.$size()}, {$$arity: 0, $$s: self})
       };
       
-      var result = Opal.hash();
+      var result = $hash();
 
       for (var i = 0, keys = self.$$keys, length = keys.length, key, value; i < length; i++) {
         key = keys[i];
@@ -17178,27 +17132,25 @@ Opal.modules["corelib/hash"] = function(Opal) {
           key = key.key;
         }
 
-        value = Opal.yield1(block, value);
+        value = $yield1(block, value);
 
-        Opal.hash_put(result, key, value);
+        $hash_put(result, key, value);
       }
 
       return result;
     ;
-    }, $Hash_transform_values$77.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$transform_values!', $Hash_transform_values$excl$79 = function() {
-      var $iter = $Hash_transform_values$excl$79.$$p, block = $iter || nil, $$80, self = this;
+    $def(self, '$transform_values!', function $Hash_transform_values$excl$39() {
+      var block = $Hash_transform_values$excl$39.$$p || nil, self = this;
 
-      if ($iter) $Hash_transform_values$excl$79.$$p = null;
+      delete $Hash_transform_values$excl$39.$$p;
       
-      
-      if ($iter) $Hash_transform_values$excl$79.$$p = null;;
-      if ($truthy(block)) {
-      } else {
-        return $send(self, 'enum_for', ["transform_values!"], ($$80 = function(){var self = $$80.$$s == null ? this : $$80.$$s;
+      ;
+      if (!$truthy(block)) {
+        return $send(self, 'enum_for', ["transform_values!"], function $$40(){var self = $$40.$$s == null ? this : $$40.$$s;
 
-          return self.$size()}, $$80.$$s = self, $$80.$$arity = 0, $$80))
+          return self.$size()}, {$$arity: 0, $$s: self})
       };
       
       for (var i = 0, keys = self.$$keys, length = keys.length, key, value; i < length; i++) {
@@ -17211,18 +17163,16 @@ Opal.modules["corelib/hash"] = function(Opal) {
           key = key.key;
         }
 
-        value = Opal.yield1(block, value);
+        value = $yield1(block, value);
 
-        Opal.hash_put(self, key, value);
+        $hash_put(self, key, value);
       }
 
       return self;
     ;
-    }, $Hash_transform_values$excl$79.$$arity = 0);
-    $alias(self, "update", "merge!");
-    $alias(self, "value?", "has_value?");
-    $alias(self, "values_at", "indexes");
-    return (Opal.def(self, '$values', $Hash_values$81 = function $$values() {
+    }, 0);
+    
+    $def(self, '$values', function $$values() {
       var self = this;
 
       
@@ -17240,96 +17190,85 @@ Opal.modules["corelib/hash"] = function(Opal) {
 
       return result;
     
-    }, $Hash_values$81.$$arity = 0), nil) && 'values';
-  })($nesting[0], null, $nesting);
+    }, 0);
+    $alias(self, "dup", "clone");
+    $alias(self, "each_pair", "each");
+    $alias(self, "eql?", "==");
+    $alias(self, "filter", "select");
+    $alias(self, "filter!", "select!");
+    $alias(self, "include?", "has_key?");
+    $alias(self, "indices", "indexes");
+    $alias(self, "key", "index");
+    $alias(self, "key?", "has_key?");
+    $alias(self, "member?", "has_key?");
+    $alias(self, "size", "length");
+    $alias(self, "store", "[]=");
+    $alias(self, "to_s", "inspect");
+    $alias(self, "update", "merge!");
+    $alias(self, "value?", "has_value?");
+    return $alias(self, "values_at", "indexes");
+  })('::', null, $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/number"] = function(Opal) {
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_divide(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs / rhs : lhs['$/'](rhs);
-  }
-  function $rb_times(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs * rhs : lhs['$*'](rhs);
-  }
-  function $rb_le(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs <= rhs : lhs['$<='](rhs);
-  }
-  function $rb_ge(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs >= rhs : lhs['$>='](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $alias = Opal.alias, $truthy = Opal.truthy, $send2 = Opal.send2, $find_super = Opal.find_super, $send = Opal.send;
+Opal.modules["corelib/number"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $Opal = Opal.Opal, $Kernel = Opal.Kernel, $def = Opal.def, $eqeqeq = Opal.eqeqeq, $truthy = Opal.truthy, $rb_gt = Opal.rb_gt, $not = Opal.not, $rb_lt = Opal.rb_lt, $alias = Opal.alias, $send2 = Opal.send2, $find_super = Opal.find_super, $send = Opal.send, $rb_plus = Opal.rb_plus, $rb_minus = Opal.rb_minus, $eqeq = Opal.eqeq, $rb_divide = Opal.rb_divide, $to_ary = Opal.to_ary, $rb_times = Opal.rb_times, $rb_le = Opal.rb_le, $rb_ge = Opal.rb_ge, $const_set = Opal.const_set;
 
-  Opal.add_stubs(['$require', '$bridge', '$raise', '$name', '$class', '$Float', '$respond_to?', '$coerce_to!', '$__coerced__', '$===', '$!', '$>', '$**', '$new', '$<', '$to_f', '$==', '$nan?', '$infinite?', '$enum_for', '$+', '$-', '$gcd', '$lcm', '$%', '$/', '$frexp', '$to_i', '$ldexp', '$rationalize', '$*', '$<<', '$to_r', '$truncate', '$-@', '$size', '$<=', '$>=']);
+  Opal.add_stubs('require,bridge,raise,name,class,Float,respond_to?,coerce_to!,__coerced__,===,>,!,**,new,<,to_f,==,nan?,infinite?,enum_for,+,-,gcd,lcm,%,/,frexp,to_i,ldexp,rationalize,*,<<,to_r,truncate,-@,size,<=,>=,inspect,coerce_to?');
   
   self.$require("corelib/numeric");
   (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Number');
 
-    var $nesting = [self].concat($parent_nesting), $Number_coerce$2, $Number___id__$3, $Number_$plus$4, $Number_$minus$5, $Number_$$6, $Number_$slash$7, $Number_$percent$8, $Number_$$9, $Number_$$10, $Number_$$11, $Number_$lt$12, $Number_$lt_eq$13, $Number_$gt$14, $Number_$gt_eq$15, $Number_$lt_eq_gt$16, $Number_$lt$lt$17, $Number_$gt$gt$18, $Number_$$$19, $Number_$plus$$20, $Number_$minus$$21, $Number_$$22, $Number_$$$23, $Number_$eq_eq_eq$24, $Number_$eq_eq$25, $Number_abs$26, $Number_abs2$27, $Number_allbits$ques$28, $Number_anybits$ques$29, $Number_angle$30, $Number_bit_length$31, $Number_ceil$32, $Number_chr$33, $Number_denominator$34, $Number_downto$35, $Number_equal$ques$37, $Number_even$ques$38, $Number_floor$39, $Number_gcd$40, $Number_gcdlcm$41, $Number_integer$ques$42, $Number_is_a$ques$43, $Number_instance_of$ques$44, $Number_lcm$45, $Number_next$46, $Number_nobits$ques$47, $Number_nonzero$ques$48, $Number_numerator$49, $Number_odd$ques$50, $Number_ord$51, $Number_pow$52, $Number_pred$53, $Number_quo$54, $Number_rationalize$55, $Number_remainder$56, $Number_round$57, $Number_times$58, $Number_to_f$60, $Number_to_i$61, $Number_to_r$62, $Number_to_s$63, $Number_truncate$64, $Number_digits$65, $Number_divmod$66, $Number_upto$67, $Number_zero$ques$69, $Number_size$70, $Number_nan$ques$71, $Number_finite$ques$72, $Number_infinite$ques$73, $Number_positive$ques$74, $Number_negative$ques$75;
+    var $nesting = [self].concat($parent_nesting);
 
     
-    $$($nesting, 'Opal').$bridge(Number, self);
-    Opal.defineProperty(self.$$prototype, '$$is_number', true);
+    $Opal.$bridge(Number, self);
+    Opal.prop(self.$$prototype, '$$is_number', true);
     self.$$is_number_class = true;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting), $allocate$1;
-
       
       
-      Opal.def(self, '$allocate', $allocate$1 = function $$allocate() {
+      
+      $def(self, '$allocate', function $$allocate() {
         var self = this;
 
-        return self.$raise($$($nesting, 'TypeError'), "" + "allocator undefined for " + (self.$name()))
-      }, $allocate$1.$$arity = 0);
+        return $Kernel.$raise($$$('TypeError'), "allocator undefined for " + (self.$name()))
+      }, 0);
       
       
       Opal.udef(self, '$' + "new");;
       return nil;;
     })(Opal.get_singleton_class(self), $nesting);
     
-    Opal.def(self, '$coerce', $Number_coerce$2 = function $$coerce(other) {
+    $def(self, '$coerce', function $$coerce(other) {
       var self = this;
 
       
       if (other === nil) {
-        self.$raise($$($nesting, 'TypeError'), "" + "can't convert " + (other.$class()) + " into Float");
+        $Kernel.$raise($$$('TypeError'), "can't convert " + (other.$class()) + " into Float");
       }
       else if (other.$$is_string) {
-        return [self.$Float(other), self];
+        return [$Kernel.$Float(other), self];
       }
       else if (other['$respond_to?']("to_f")) {
-        return [$$($nesting, 'Opal')['$coerce_to!'](other, $$($nesting, 'Float'), "to_f"), self];
+        return [$Opal['$coerce_to!'](other, $$$('Float'), "to_f"), self];
       }
       else if (other.$$is_number) {
         return [other, self];
       }
       else {
-        self.$raise($$($nesting, 'TypeError'), "" + "can't convert " + (other.$class()) + " into Float");
+        $Kernel.$raise($$$('TypeError'), "can't convert " + (other.$class()) + " into Float");
       }
     
-    }, $Number_coerce$2.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$__id__', $Number___id__$3 = function $$__id__() {
+    $def(self, '$__id__', function $$__id__() {
       var self = this;
 
       return (self * 2) + 1;
-    }, $Number___id__$3.$$arity = 0);
-    $alias(self, "object_id", "__id__");
+    }, 0);
     
-    Opal.def(self, '$+', $Number_$plus$4 = function(other) {
+    $def(self, '$+', function $Number_$plus$1(other) {
       var self = this;
 
       
@@ -17340,9 +17279,9 @@ Opal.modules["corelib/number"] = function(Opal) {
         return self.$__coerced__("+", other);
       }
     
-    }, $Number_$plus$4.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$-', $Number_$minus$5 = function(other) {
+    $def(self, '$-', function $Number_$minus$2(other) {
       var self = this;
 
       
@@ -17353,9 +17292,9 @@ Opal.modules["corelib/number"] = function(Opal) {
         return self.$__coerced__("-", other);
       }
     
-    }, $Number_$minus$5.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$*', $Number_$$6 = function(other) {
+    $def(self, '$*', function $Number_$$3(other) {
       var self = this;
 
       
@@ -17366,9 +17305,9 @@ Opal.modules["corelib/number"] = function(Opal) {
         return self.$__coerced__("*", other);
       }
     
-    }, $Number_$$6.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$/', $Number_$slash$7 = function(other) {
+    $def(self, '$/', function $Number_$slash$4(other) {
       var self = this;
 
       
@@ -17379,10 +17318,9 @@ Opal.modules["corelib/number"] = function(Opal) {
         return self.$__coerced__("/", other);
       }
     
-    }, $Number_$slash$7.$$arity = 1);
-    $alias(self, "fdiv", "/");
+    }, 1);
     
-    Opal.def(self, '$%', $Number_$percent$8 = function(other) {
+    $def(self, '$%', function $Number_$percent$5(other) {
       var self = this;
 
       
@@ -17391,7 +17329,7 @@ Opal.modules["corelib/number"] = function(Opal) {
           return other;
         }
         else if (other == 0) {
-          self.$raise($$($nesting, 'ZeroDivisionError'), "divided by 0");
+          $Kernel.$raise($$$('ZeroDivisionError'), "divided by 0");
         }
         else if (other < 0 || self < 0) {
           return (self % other + other) % other;
@@ -17404,9 +17342,9 @@ Opal.modules["corelib/number"] = function(Opal) {
         return self.$__coerced__("%", other);
       }
     
-    }, $Number_$percent$8.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$&', $Number_$$9 = function(other) {
+    $def(self, '$&', function $Number_$$6(other) {
       var self = this;
 
       
@@ -17417,9 +17355,9 @@ Opal.modules["corelib/number"] = function(Opal) {
         return self.$__coerced__("&", other);
       }
     
-    }, $Number_$$9.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$|', $Number_$$10 = function(other) {
+    $def(self, '$|', function $Number_$$7(other) {
       var self = this;
 
       
@@ -17430,9 +17368,9 @@ Opal.modules["corelib/number"] = function(Opal) {
         return self.$__coerced__("|", other);
       }
     
-    }, $Number_$$10.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$^', $Number_$$11 = function(other) {
+    $def(self, '$^', function $Number_$$8(other) {
       var self = this;
 
       
@@ -17443,9 +17381,9 @@ Opal.modules["corelib/number"] = function(Opal) {
         return self.$__coerced__("^", other);
       }
     
-    }, $Number_$$11.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$<', $Number_$lt$12 = function(other) {
+    $def(self, '$<', function $Number_$lt$9(other) {
       var self = this;
 
       
@@ -17456,9 +17394,9 @@ Opal.modules["corelib/number"] = function(Opal) {
         return self.$__coerced__("<", other);
       }
     
-    }, $Number_$lt$12.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$<=', $Number_$lt_eq$13 = function(other) {
+    $def(self, '$<=', function $Number_$lt_eq$10(other) {
       var self = this;
 
       
@@ -17469,9 +17407,9 @@ Opal.modules["corelib/number"] = function(Opal) {
         return self.$__coerced__("<=", other);
       }
     
-    }, $Number_$lt_eq$13.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$>', $Number_$gt$14 = function(other) {
+    $def(self, '$>', function $Number_$gt$11(other) {
       var self = this;
 
       
@@ -17482,9 +17420,9 @@ Opal.modules["corelib/number"] = function(Opal) {
         return self.$__coerced__(">", other);
       }
     
-    }, $Number_$gt$14.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$>=', $Number_$gt_eq$15 = function(other) {
+    $def(self, '$>=', function $Number_$gt_eq$12(other) {
       var self = this;
 
       
@@ -17495,7 +17433,7 @@ Opal.modules["corelib/number"] = function(Opal) {
         return self.$__coerced__(">=", other);
       }
     
-    }, $Number_$gt_eq$15.$$arity = 1);
+    }, 1);
     
     var spaceship_operator = function(self, other) {
       if (other.$$is_number) {
@@ -17517,41 +17455,41 @@ Opal.modules["corelib/number"] = function(Opal) {
     }
   ;
     
-    Opal.def(self, '$<=>', $Number_$lt_eq_gt$16 = function(other) {
+    $def(self, '$<=>', function $Number_$lt_eq_gt$13(other) {
       var self = this;
 
       try {
         return spaceship_operator(self, other);
       } catch ($err) {
-        if (Opal.rescue($err, [$$($nesting, 'ArgumentError')])) {
+        if (Opal.rescue($err, [$$$('ArgumentError')])) {
           try {
             return nil
           } finally { Opal.pop_exception(); }
         } else { throw $err; }
       }
-    }, $Number_$lt_eq_gt$16.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$<<', $Number_$lt$lt$17 = function(count) {
+    $def(self, '$<<', function $Number_$lt$lt$14(count) {
       var self = this;
 
       
-      count = $$($nesting, 'Opal')['$coerce_to!'](count, $$($nesting, 'Integer'), "to_int");
+      count = $Opal['$coerce_to!'](count, $$$('Integer'), "to_int");
       return count > 0 ? self << count : self >> -count;
-    }, $Number_$lt$lt$17.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$>>', $Number_$gt$gt$18 = function(count) {
+    $def(self, '$>>', function $Number_$gt$gt$15(count) {
       var self = this;
 
       
-      count = $$($nesting, 'Opal')['$coerce_to!'](count, $$($nesting, 'Integer'), "to_int");
+      count = $Opal['$coerce_to!'](count, $$$('Integer'), "to_int");
       return count > 0 ? self >> count : self << -count;
-    }, $Number_$gt$gt$18.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$[]', $Number_$$$19 = function(bit) {
+    $def(self, '$[]', function $Number_$$$16(bit) {
       var self = this;
 
       
-      bit = $$($nesting, 'Opal')['$coerce_to!'](bit, $$($nesting, 'Integer'), "to_int");
+      bit = $Opal['$coerce_to!'](bit, $$$('Integer'), "to_int");
       
       if (bit < 0) {
         return 0;
@@ -17561,74 +17499,45 @@ Opal.modules["corelib/number"] = function(Opal) {
       }
       return (self >> bit) & 1;
     ;
-    }, $Number_$$$19.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$+@', $Number_$plus$$20 = function() {
+    $def(self, '$+@', function $Number_$plus$$17() {
       var self = this;
 
       return +self;
-    }, $Number_$plus$$20.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$-@', $Number_$minus$$21 = function() {
+    $def(self, '$-@', function $Number_$minus$$18() {
       var self = this;
 
       return -self;
-    }, $Number_$minus$$21.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$~', $Number_$$22 = function() {
+    $def(self, '$~', function $Number_$$19() {
       var self = this;
 
       return ~self;
-    }, $Number_$$22.$$arity = 0);
-    
-    Opal.def(self, '$**', $Number_$$$23 = function(other) {
-      var self = this, $ret_or_1 = nil, $ret_or_2 = nil, $ret_or_3 = nil;
-
-      if ($truthy($$($nesting, 'Integer')['$==='](other))) {
-        if ($truthy((function() {if ($truthy(($ret_or_1 = $$($nesting, 'Integer')['$==='](self)['$!']()))) {
-          return $ret_or_1
-        } else {
-          return $rb_gt(other, 0)
-        }; return nil; })())) {
-          return Math.pow(self, other);
-        } else {
-          return $$($nesting, 'Rational').$new(self, 1)['$**'](other)
-        }
-      } else if ($truthy((function() {if ($truthy(($ret_or_2 = $rb_lt(self, 0)))) {
-        
-        if ($truthy(($ret_or_3 = $$($nesting, 'Float')['$==='](other)))) {
-          return $ret_or_3
-        } else {
-          return $$($nesting, 'Rational')['$==='](other)
-        };
-      } else {
-        return $ret_or_2
-      }; return nil; })())) {
-        return $$($nesting, 'Complex').$new(self, 0)['$**'](other.$to_f())
-      } else if ($truthy(other.$$is_number != null)) {
-        return Math.pow(self, other);
-      } else {
-        return self.$__coerced__("**", other)
-      }
-    }, $Number_$$$23.$$arity = 1);
+    }, 0);
     
-    Opal.def(self, '$===', $Number_$eq_eq_eq$24 = function(other) {
+    $def(self, '$**', function $Number_$$$20(other) {
       var self = this;
-
-      
-      if (other.$$is_number) {
-        return self.valueOf() === other.valueOf();
-      }
-      else if (other['$respond_to?']("==")) {
-        return other['$=='](self);
-      }
-      else {
-        return false;
+
+      if ($eqeqeq($$$('Integer'), other)) {
+        if (($not($$$('Integer')['$==='](self)) || ($truthy($rb_gt(other, 0))))) {
+          return Math.pow(self, other);
+        } else {
+          return $$$('Rational').$new(self, 1)['$**'](other)
+        }
+      } else if (($rb_lt(self, 0) && (($eqeqeq($$$('Float'), other) || ($eqeqeq($$$('Rational'), other)))))) {
+        return $$$('Complex').$new(self, 0)['$**'](other.$to_f())
+      } else if ($truthy(other.$$is_number != null)) {
+        return Math.pow(self, other);
+      } else {
+        return self.$__coerced__("**", other)
       }
+    }, 1);
     
-    }, $Number_$eq_eq_eq$24.$$arity = 1);
-    
-    Opal.def(self, '$==', $Number_$eq_eq$25 = function(other) {
+    $def(self, '$==', function $Number_$eq_eq$21(other) {
       var self = this;
 
       
@@ -17642,42 +17551,44 @@ Opal.modules["corelib/number"] = function(Opal) {
         return false;
       }
     
-    }, $Number_$eq_eq$25.$$arity = 1);
+    }, 1);
+    $alias(self, "===", "==");
     
-    Opal.def(self, '$abs', $Number_abs$26 = function $$abs() {
+    $def(self, '$abs', function $$abs() {
       var self = this;
 
       return Math.abs(self);
-    }, $Number_abs$26.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$abs2', $Number_abs2$27 = function $$abs2() {
+    $def(self, '$abs2', function $$abs2() {
       var self = this;
 
       return Math.abs(self * self);
-    }, $Number_abs2$27.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$allbits?', $Number_allbits$ques$28 = function(mask) {
+    $def(self, '$allbits?', function $Number_allbits$ques$22(mask) {
       var self = this;
 
       
-      mask = $$($nesting, 'Opal')['$coerce_to!'](mask, $$($nesting, 'Integer'), "to_int");
+      mask = $Opal['$coerce_to!'](mask, $$$('Integer'), "to_int");
       return (self & mask) == mask;;
-    }, $Number_allbits$ques$28.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$anybits?', $Number_anybits$ques$29 = function(mask) {
+    $def(self, '$anybits?', function $Number_anybits$ques$23(mask) {
       var self = this;
 
       
-      mask = $$($nesting, 'Opal')['$coerce_to!'](mask, $$($nesting, 'Integer'), "to_int");
+      mask = $Opal['$coerce_to!'](mask, $$$('Integer'), "to_int");
       return (self & mask) !== 0;;
-    }, $Number_anybits$ques$29.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$angle', $Number_angle$30 = function $$angle() {
+    $def(self, '$angle', function $$angle() {
       var self = this;
 
       
       if ($truthy(self['$nan?']())) {
-        return self};
+        return self
+      };
       
       if (self == 0) {
         if (1 / self > 0) {
@@ -17694,17 +17605,14 @@ Opal.modules["corelib/number"] = function(Opal) {
         return 0;
       }
     ;
-    }, $Number_angle$30.$$arity = 0);
-    $alias(self, "arg", "angle");
-    $alias(self, "phase", "angle");
+    }, 0);
     
-    Opal.def(self, '$bit_length', $Number_bit_length$31 = function $$bit_length() {
+    $def(self, '$bit_length', function $$bit_length() {
       var self = this;
 
       
-      if ($truthy($$($nesting, 'Integer')['$==='](self))) {
-      } else {
-        self.$raise($$($nesting, 'NoMethodError').$new("" + "undefined method `bit_length` for " + (self) + ":Float", "bit_length"))
+      if (!$eqeqeq($$$('Integer'), self)) {
+        $Kernel.$raise($$$('NoMethodError').$new("undefined method `bit_length` for " + (self) + ":Float", "bit_length"))
       };
       
       if (self === 0 || self === -1) {
@@ -17721,16 +17629,14 @@ Opal.modules["corelib/number"] = function(Opal) {
 
       return result;
     ;
-    }, $Number_bit_length$31.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$ceil', $Number_ceil$32 = function $$ceil(ndigits) {
+    $def(self, '$ceil', function $$ceil(ndigits) {
       var self = this;
 
       
       
-      if (ndigits == null) {
-        ndigits = 0;
-      };
+      if (ndigits == null) ndigits = 0;;
       
       var f = self.$to_f();
 
@@ -17747,93 +17653,79 @@ Opal.modules["corelib/number"] = function(Opal) {
 
       return result;
     ;
-    }, $Number_ceil$32.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$chr', $Number_chr$33 = function $$chr(encoding) {
+    $def(self, '$chr', function $$chr(encoding) {
       var self = this;
 
       
       ;
       return Opal.enc(String.fromCharCode(self), encoding || "BINARY");;
-    }, $Number_chr$33.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$denominator', $Number_denominator$34 = function $$denominator() {
-      var $iter = $Number_denominator$34.$$p, $yield = $iter || nil, self = this, $ret_or_4 = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+    $def(self, '$denominator', function $$denominator() {
+      var $yield = $$denominator.$$p || nil, self = this;
 
-      if ($iter) $Number_denominator$34.$$p = null;
-      // Prepare super implicit arguments
-      for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-        $zuper[$zuper_i] = arguments[$zuper_i];
-      }
-      if ($truthy((function() {if ($truthy(($ret_or_4 = self['$nan?']()))) {
-        return $ret_or_4
-      } else {
-        return self['$infinite?']()
-      }; return nil; })())) {
+      delete $$denominator.$$p;
+      if (($truthy(self['$nan?']()) || ($truthy(self['$infinite?']())))) {
         return 1
       } else {
-        return $send2(self, $find_super(self, 'denominator', $Number_denominator$34, false, true), 'denominator', $zuper, $iter)
+        return $send2(self, $find_super(self, 'denominator', $$denominator, false, true), 'denominator', [], $yield)
       }
-    }, $Number_denominator$34.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$downto', $Number_downto$35 = function $$downto(stop) {
-      var $iter = $Number_downto$35.$$p, block = $iter || nil, $$36, self = this;
+    $def(self, '$downto', function $$downto(stop) {
+      var block = $$downto.$$p || nil, self = this;
 
-      if ($iter) $Number_downto$35.$$p = null;
+      delete $$downto.$$p;
       
-      
-      if ($iter) $Number_downto$35.$$p = null;;
-      if ((block !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["downto", stop], ($$36 = function(){var self = $$36.$$s == null ? this : $$36.$$s;
+      ;
+      if (!(block !== nil)) {
+        return $send(self, 'enum_for', ["downto", stop], function $$24(){var self = $$24.$$s == null ? this : $$24.$$s;
 
           
-          if ($truthy($$($nesting, 'Numeric')['$==='](stop))) {
-          } else {
-            self.$raise($$($nesting, 'ArgumentError'), "" + "comparison of " + (self.$class()) + " with " + (stop.$class()) + " failed")
+          if (!$eqeqeq($$$('Numeric'), stop)) {
+            $Kernel.$raise($$$('ArgumentError'), "comparison of " + (self.$class()) + " with " + (stop.$class()) + " failed")
           };
           if ($truthy($rb_gt(stop, self))) {
             return 0
           } else {
             return $rb_plus($rb_minus(self, stop), 1)
-          };}, $$36.$$s = self, $$36.$$arity = 0, $$36))
+          };}, {$$arity: 0, $$s: self})
       };
       
       if (!stop.$$is_number) {
-        self.$raise($$($nesting, 'ArgumentError'), "" + "comparison of " + (self.$class()) + " with " + (stop.$class()) + " failed")
+        $Kernel.$raise($$$('ArgumentError'), "comparison of " + (self.$class()) + " with " + (stop.$class()) + " failed")
       }
       for (var i = self; i >= stop; i--) {
         block(i);
       }
     ;
       return self;
-    }, $Number_downto$35.$$arity = 1);
-    $alias(self, "eql?", "==");
+    }, 1);
     
-    Opal.def(self, '$equal?', $Number_equal$ques$37 = function(other) {
-      var self = this, $ret_or_5 = nil;
+    $def(self, '$equal?', function $Number_equal$ques$25(other) {
+      var self = this, $ret_or_1 = nil;
 
-      if ($truthy(($ret_or_5 = self['$=='](other)))) {
-        return $ret_or_5
+      if ($truthy(($ret_or_1 = self['$=='](other)))) {
+        return $ret_or_1
       } else {
         return isNaN(self) && isNaN(other);
       }
-    }, $Number_equal$ques$37.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$even?', $Number_even$ques$38 = function() {
+    $def(self, '$even?', function $Number_even$ques$26() {
       var self = this;
 
       return self % 2 === 0;
-    }, $Number_even$ques$38.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$floor', $Number_floor$39 = function $$floor(ndigits) {
+    $def(self, '$floor', function $$floor(ndigits) {
       var self = this;
 
       
       
-      if (ndigits == null) {
-        ndigits = 0;
-      };
+      if (ndigits == null) ndigits = 0;;
       
       var f = self.$to_f();
 
@@ -17850,15 +17742,14 @@ Opal.modules["corelib/number"] = function(Opal) {
 
       return result;
     ;
-    }, $Number_floor$39.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$gcd', $Number_gcd$40 = function $$gcd(other) {
+    $def(self, '$gcd', function $$gcd(other) {
       var self = this;
 
       
-      if ($truthy($$($nesting, 'Integer')['$==='](other))) {
-      } else {
-        self.$raise($$($nesting, 'TypeError'), "not an integer")
+      if (!$eqeqeq($$$('Integer'), other)) {
+        $Kernel.$raise($$$('TypeError'), "not an integer")
       };
       
       var min = Math.abs(self),
@@ -17873,88 +17764,60 @@ Opal.modules["corelib/number"] = function(Opal) {
 
       return max;
     ;
-    }, $Number_gcd$40.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$gcdlcm', $Number_gcdlcm$41 = function $$gcdlcm(other) {
+    $def(self, '$gcdlcm', function $$gcdlcm(other) {
       var self = this;
 
       return [self.$gcd(other), self.$lcm(other)]
-    }, $Number_gcdlcm$41.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$integer?', $Number_integer$ques$42 = function() {
+    $def(self, '$integer?', function $Number_integer$ques$27() {
       var self = this;
 
       return self % 1 === 0;
-    }, $Number_integer$ques$42.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$is_a?', $Number_is_a$ques$43 = function(klass) {
-      var $iter = $Number_is_a$ques$43.$$p, $yield = $iter || nil, self = this, $ret_or_6 = nil, $ret_or_7 = nil, $ret_or_8 = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+    $def(self, '$is_a?', function $Number_is_a$ques$28(klass) {
+      var $yield = $Number_is_a$ques$28.$$p || nil, self = this;
 
-      if ($iter) $Number_is_a$ques$43.$$p = null;
-      // Prepare super implicit arguments
-      for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-        $zuper[$zuper_i] = arguments[$zuper_i];
-      }
+      delete $Number_is_a$ques$28.$$p;
       
-      if ($truthy((function() {if ($truthy(($ret_or_6 = klass['$==']($$($nesting, 'Integer'))))) {
-        return $$($nesting, 'Integer')['$==='](self)
-      } else {
-        return $ret_or_6
-      }; return nil; })())) {
-        return true};
-      if ($truthy((function() {if ($truthy(($ret_or_7 = klass['$==']($$($nesting, 'Integer'))))) {
-        return $$($nesting, 'Integer')['$==='](self)
-      } else {
-        return $ret_or_7
-      }; return nil; })())) {
-        return true};
-      if ($truthy((function() {if ($truthy(($ret_or_8 = klass['$==']($$($nesting, 'Float'))))) {
-        return $$($nesting, 'Float')['$==='](self)
-      } else {
-        return $ret_or_8
-      }; return nil; })())) {
-        return true};
-      return $send2(self, $find_super(self, 'is_a?', $Number_is_a$ques$43, false, true), 'is_a?', $zuper, $iter);
-    }, $Number_is_a$ques$43.$$arity = 1);
-    $alias(self, "kind_of?", "is_a?");
+      if (($eqeq(klass, $$$('Integer')) && ($eqeqeq($$$('Integer'), self)))) {
+        return true
+      };
+      if (($eqeq(klass, $$$('Integer')) && ($eqeqeq($$$('Integer'), self)))) {
+        return true
+      };
+      if (($eqeq(klass, $$$('Float')) && ($eqeqeq($$$('Float'), self)))) {
+        return true
+      };
+      return $send2(self, $find_super(self, 'is_a?', $Number_is_a$ques$28, false, true), 'is_a?', [klass], $yield);
+    }, 1);
     
-    Opal.def(self, '$instance_of?', $Number_instance_of$ques$44 = function(klass) {
-      var $iter = $Number_instance_of$ques$44.$$p, $yield = $iter || nil, self = this, $ret_or_9 = nil, $ret_or_10 = nil, $ret_or_11 = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+    $def(self, '$instance_of?', function $Number_instance_of$ques$29(klass) {
+      var $yield = $Number_instance_of$ques$29.$$p || nil, self = this;
 
-      if ($iter) $Number_instance_of$ques$44.$$p = null;
-      // Prepare super implicit arguments
-      for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-        $zuper[$zuper_i] = arguments[$zuper_i];
-      }
+      delete $Number_instance_of$ques$29.$$p;
       
-      if ($truthy((function() {if ($truthy(($ret_or_9 = klass['$==']($$($nesting, 'Integer'))))) {
-        return $$($nesting, 'Integer')['$==='](self)
-      } else {
-        return $ret_or_9
-      }; return nil; })())) {
-        return true};
-      if ($truthy((function() {if ($truthy(($ret_or_10 = klass['$==']($$($nesting, 'Integer'))))) {
-        return $$($nesting, 'Integer')['$==='](self)
-      } else {
-        return $ret_or_10
-      }; return nil; })())) {
-        return true};
-      if ($truthy((function() {if ($truthy(($ret_or_11 = klass['$==']($$($nesting, 'Float'))))) {
-        return $$($nesting, 'Float')['$==='](self)
-      } else {
-        return $ret_or_11
-      }; return nil; })())) {
-        return true};
-      return $send2(self, $find_super(self, 'instance_of?', $Number_instance_of$ques$44, false, true), 'instance_of?', $zuper, $iter);
-    }, $Number_instance_of$ques$44.$$arity = 1);
+      if (($eqeq(klass, $$$('Integer')) && ($eqeqeq($$$('Integer'), self)))) {
+        return true
+      };
+      if (($eqeq(klass, $$$('Integer')) && ($eqeqeq($$$('Integer'), self)))) {
+        return true
+      };
+      if (($eqeq(klass, $$$('Float')) && ($eqeqeq($$$('Float'), self)))) {
+        return true
+      };
+      return $send2(self, $find_super(self, 'instance_of?', $Number_instance_of$ques$29, false, true), 'instance_of?', [klass], $yield);
+    }, 1);
     
-    Opal.def(self, '$lcm', $Number_lcm$45 = function $$lcm(other) {
+    $def(self, '$lcm', function $$lcm(other) {
       var self = this;
 
       
-      if ($truthy($$($nesting, 'Integer')['$==='](other))) {
-      } else {
-        self.$raise($$($nesting, 'TypeError'), "not an integer")
+      if (!$eqeqeq($$$('Integer'), other)) {
+        $Kernel.$raise($$$('TypeError'), "not an integer")
       };
       
       if (self == 0 || other == 0) {
@@ -17964,169 +17827,155 @@ Opal.modules["corelib/number"] = function(Opal) {
         return Math.abs(self * other / self.$gcd(other));
       }
     ;
-    }, $Number_lcm$45.$$arity = 1);
-    $alias(self, "magnitude", "abs");
-    $alias(self, "modulo", "%");
+    }, 1);
     
-    Opal.def(self, '$next', $Number_next$46 = function $$next() {
+    $def(self, '$next', function $$next() {
       var self = this;
 
       return self + 1;
-    }, $Number_next$46.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$nobits?', $Number_nobits$ques$47 = function(mask) {
+    $def(self, '$nobits?', function $Number_nobits$ques$30(mask) {
       var self = this;
 
       
-      mask = $$($nesting, 'Opal')['$coerce_to!'](mask, $$($nesting, 'Integer'), "to_int");
+      mask = $Opal['$coerce_to!'](mask, $$$('Integer'), "to_int");
       return (self & mask) == 0;;
-    }, $Number_nobits$ques$47.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$nonzero?', $Number_nonzero$ques$48 = function() {
+    $def(self, '$nonzero?', function $Number_nonzero$ques$31() {
       var self = this;
 
       return self == 0 ? nil : self;
-    }, $Number_nonzero$ques$48.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$numerator', $Number_numerator$49 = function $$numerator() {
-      var $iter = $Number_numerator$49.$$p, $yield = $iter || nil, self = this, $ret_or_12 = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+    $def(self, '$numerator', function $$numerator() {
+      var $yield = $$numerator.$$p || nil, self = this;
 
-      if ($iter) $Number_numerator$49.$$p = null;
-      // Prepare super implicit arguments
-      for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-        $zuper[$zuper_i] = arguments[$zuper_i];
-      }
-      if ($truthy((function() {if ($truthy(($ret_or_12 = self['$nan?']()))) {
-        return $ret_or_12
-      } else {
-        return self['$infinite?']()
-      }; return nil; })())) {
+      delete $$numerator.$$p;
+      if (($truthy(self['$nan?']()) || ($truthy(self['$infinite?']())))) {
         return self
       } else {
-        return $send2(self, $find_super(self, 'numerator', $Number_numerator$49, false, true), 'numerator', $zuper, $iter)
+        return $send2(self, $find_super(self, 'numerator', $$numerator, false, true), 'numerator', [], $yield)
       }
-    }, $Number_numerator$49.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$odd?', $Number_odd$ques$50 = function() {
+    $def(self, '$odd?', function $Number_odd$ques$32() {
       var self = this;
 
       return self % 2 !== 0;
-    }, $Number_odd$ques$50.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$ord', $Number_ord$51 = function $$ord() {
+    $def(self, '$ord', function $$ord() {
       var self = this;
 
       return self
-    }, $Number_ord$51.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$pow', $Number_pow$52 = function $$pow(b, m) {
+    $def(self, '$pow', function $$pow(b, m) {
       var self = this;
 
       
       ;
       
       if (self == 0) {
-        self.$raise($$($nesting, 'ZeroDivisionError'), "divided by 0")
+        $Kernel.$raise($$$('ZeroDivisionError'), "divided by 0")
       }
 
       if (m === undefined) {
         return self['$**'](b);
       } else {
-        if (!($$($nesting, 'Integer')['$==='](b))) {
-          self.$raise($$($nesting, 'TypeError'), "Integer#pow() 2nd argument not allowed unless a 1st argument is integer")
+        if (!($$$('Integer')['$==='](b))) {
+          $Kernel.$raise($$$('TypeError'), "Integer#pow() 2nd argument not allowed unless a 1st argument is integer")
         }
 
         if (b < 0) {
-          self.$raise($$($nesting, 'TypeError'), "Integer#pow() 1st argument cannot be negative when 2nd argument specified")
+          $Kernel.$raise($$$('TypeError'), "Integer#pow() 1st argument cannot be negative when 2nd argument specified")
         }
 
-        if (!($$($nesting, 'Integer')['$==='](m))) {
-          self.$raise($$($nesting, 'TypeError'), "Integer#pow() 2nd argument not allowed unless all arguments are integers")
+        if (!($$$('Integer')['$==='](m))) {
+          $Kernel.$raise($$$('TypeError'), "Integer#pow() 2nd argument not allowed unless all arguments are integers")
         }
 
         if (m === 0) {
-          self.$raise($$($nesting, 'ZeroDivisionError'), "divided by 0")
+          $Kernel.$raise($$$('ZeroDivisionError'), "divided by 0")
         }
 
         return self['$**'](b)['$%'](m)
       }
     ;
-    }, $Number_pow$52.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$pred', $Number_pred$53 = function $$pred() {
+    $def(self, '$pred', function $$pred() {
       var self = this;
 
       return self - 1;
-    }, $Number_pred$53.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$quo', $Number_quo$54 = function $$quo(other) {
-      var $iter = $Number_quo$54.$$p, $yield = $iter || nil, self = this, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+    $def(self, '$quo', function $$quo(other) {
+      var $yield = $$quo.$$p || nil, self = this;
 
-      if ($iter) $Number_quo$54.$$p = null;
-      // Prepare super implicit arguments
-      for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-        $zuper[$zuper_i] = arguments[$zuper_i];
-      }
-      if ($truthy($$($nesting, 'Integer')['$==='](self))) {
-        return $send2(self, $find_super(self, 'quo', $Number_quo$54, false, true), 'quo', $zuper, $iter)
+      delete $$quo.$$p;
+      if ($eqeqeq($$$('Integer'), self)) {
+        return $send2(self, $find_super(self, 'quo', $$quo, false, true), 'quo', [other], $yield)
       } else {
         return $rb_divide(self, other)
       }
-    }, $Number_quo$54.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$rationalize', $Number_rationalize$55 = function $$rationalize(eps) {
+    $def(self, '$rationalize', function $$rationalize(eps) {
       var $a, $b, self = this, f = nil, n = nil;
 
       
       ;
       
       if (arguments.length > 1) {
-        self.$raise($$($nesting, 'ArgumentError'), "" + "wrong number of arguments (" + (arguments.length) + " for 0..1)");
+        $Kernel.$raise($$$('ArgumentError'), "wrong number of arguments (" + (arguments.length) + " for 0..1)");
       }
     ;
-      if ($truthy($$($nesting, 'Integer')['$==='](self))) {
-        return $$($nesting, 'Rational').$new(self, 1)
+      if ($eqeqeq($$$('Integer'), self)) {
+        return $$$('Rational').$new(self, 1)
       } else if ($truthy(self['$infinite?']())) {
-        return self.$raise($$($nesting, 'FloatDomainError'), "Infinity")
+        return $Kernel.$raise($$$('FloatDomainError'), "Infinity")
       } else if ($truthy(self['$nan?']())) {
-        return self.$raise($$($nesting, 'FloatDomainError'), "NaN")
+        return $Kernel.$raise($$$('FloatDomainError'), "NaN")
       } else if ($truthy(eps == null)) {
         
-        $b = $$($nesting, 'Math').$frexp(self), $a = Opal.to_ary($b), (f = ($a[0] == null ? nil : $a[0])), (n = ($a[1] == null ? nil : $a[1])), $b;
-        f = $$($nesting, 'Math').$ldexp(f, $$$($$($nesting, 'Float'), 'MANT_DIG')).$to_i();
-        n = $rb_minus(n, $$$($$($nesting, 'Float'), 'MANT_DIG'));
-        return $$($nesting, 'Rational').$new($rb_times(2, f), (1)['$<<']($rb_minus(1, n))).$rationalize($$($nesting, 'Rational').$new(1, (1)['$<<']($rb_minus(1, n))));
+        $b = $$$('Math').$frexp(self), $a = $to_ary($b), (f = ($a[0] == null ? nil : $a[0])), (n = ($a[1] == null ? nil : $a[1])), $b;
+        f = $$$('Math').$ldexp(f, $$$($$$('Float'), 'MANT_DIG')).$to_i();
+        n = $rb_minus(n, $$$($$$('Float'), 'MANT_DIG'));
+        return $$$('Rational').$new($rb_times(2, f), (1)['$<<']($rb_minus(1, n))).$rationalize($$$('Rational').$new(1, (1)['$<<']($rb_minus(1, n))));
       } else {
         return self.$to_r().$rationalize(eps)
       };
-    }, $Number_rationalize$55.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$remainder', $Number_remainder$56 = function $$remainder(y) {
+    $def(self, '$remainder', function $$remainder(y) {
       var self = this;
 
       return $rb_minus(self, $rb_times(y, $rb_divide(self, y).$truncate()))
-    }, $Number_remainder$56.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$round', $Number_round$57 = function $$round(ndigits) {
-      var $a, $b, self = this, $ret_or_13 = nil, $ret_or_14 = nil, $ret_or_15 = nil, _ = nil, exp = nil;
+    $def(self, '$round', function $$round(ndigits) {
+      var $a, $b, self = this, _ = nil, exp = nil;
 
       
       ;
-      if ($truthy($$($nesting, 'Integer')['$==='](self))) {
+      if ($eqeqeq($$$('Integer'), self)) {
         
         if ($truthy(ndigits == null)) {
-          return self};
-        if ($truthy((function() {if ($truthy(($ret_or_13 = $$($nesting, 'Float')['$==='](ndigits)))) {
-          return ndigits['$infinite?']()
-        } else {
-          return $ret_or_13
-        }; return nil; })())) {
-          self.$raise($$($nesting, 'RangeError'), "Infinity")};
-        ndigits = $$($nesting, 'Opal')['$coerce_to!'](ndigits, $$($nesting, 'Integer'), "to_int");
-        if ($truthy($rb_lt(ndigits, $$$($$($nesting, 'Integer'), 'MIN')))) {
-          self.$raise($$($nesting, 'RangeError'), "out of bounds")};
+          return self
+        };
+        if (($eqeqeq($$$('Float'), ndigits) && ($truthy(ndigits['$infinite?']())))) {
+          $Kernel.$raise($$$('RangeError'), "Infinity")
+        };
+        ndigits = $Opal['$coerce_to!'](ndigits, $$$('Integer'), "to_int");
+        if ($truthy($rb_lt(ndigits, $$$($$$('Integer'), 'MIN')))) {
+          $Kernel.$raise($$$('RangeError'), "out of bounds")
+        };
         if ($truthy(ndigits >= 0)) {
-          return self};
+          return self
+        };
         ndigits = ndigits['$-@']();
         
         if (0.415241 * ndigits - 0.125 > self.$size()) {
@@ -18140,56 +17989,42 @@ Opal.modules["corelib/number"] = function(Opal) {
       ;
       } else {
         
-        if ($truthy((function() {if ($truthy(($ret_or_14 = self['$nan?']()))) {
-          return ndigits == null;
-        } else {
-          return $ret_or_14
-        }; return nil; })())) {
-          self.$raise($$($nesting, 'FloatDomainError'), "NaN")};
-        ndigits = $$($nesting, 'Opal')['$coerce_to!'](ndigits || 0, $$($nesting, 'Integer'), "to_int");
+        if (($truthy(self['$nan?']()) && ($truthy(ndigits == null)))) {
+          $Kernel.$raise($$$('FloatDomainError'), "NaN")
+        };
+        ndigits = $Opal['$coerce_to!'](ndigits || 0, $$$('Integer'), "to_int");
         if ($truthy($rb_le(ndigits, 0))) {
           if ($truthy(self['$nan?']())) {
-            self.$raise($$($nesting, 'RangeError'), "NaN")
+            $Kernel.$raise($$$('RangeError'), "NaN")
           } else if ($truthy(self['$infinite?']())) {
-            self.$raise($$($nesting, 'FloatDomainError'), "Infinity")}
-        } else if (ndigits['$=='](0)) {
+            $Kernel.$raise($$$('FloatDomainError'), "Infinity")
+          }
+        } else if ($eqeq(ndigits, 0)) {
           return Math.round(self)
-        } else if ($truthy((function() {if ($truthy(($ret_or_15 = self['$nan?']()))) {
-          return $ret_or_15
-        } else {
-          return self['$infinite?']()
-        }; return nil; })())) {
-          return self};
-        $b = $$($nesting, 'Math').$frexp(self), $a = Opal.to_ary($b), (_ = ($a[0] == null ? nil : $a[0])), (exp = ($a[1] == null ? nil : $a[1])), $b;
-        if ($truthy($rb_ge(ndigits, $rb_minus($rb_plus($$$($$($nesting, 'Float'), 'DIG'), 2), (function() {if ($truthy($rb_gt(exp, 0))) {
-          return $rb_divide(exp, 4)
-        } else {
-          return $rb_minus($rb_divide(exp, 3), 1)
-        }; return nil; })())))) {
-          return self};
-        if ($truthy($rb_lt(ndigits, (function() {if ($truthy($rb_gt(exp, 0))) {
-          return $rb_plus($rb_divide(exp, 3), 1)
-        } else {
-          return $rb_divide(exp, 4)
-        }; return nil; })()['$-@']()))) {
-          return 0};
+        } else if (($truthy(self['$nan?']()) || ($truthy(self['$infinite?']())))) {
+          return self
+        };
+        $b = $$$('Math').$frexp(self), $a = $to_ary($b), (_ = ($a[0] == null ? nil : $a[0])), (exp = ($a[1] == null ? nil : $a[1])), $b;
+        if ($truthy($rb_ge(ndigits, $rb_minus($rb_plus($$$($$$('Float'), 'DIG'), 2), ($truthy($rb_gt(exp, 0)) ? ($rb_divide(exp, 4)) : ($rb_minus($rb_divide(exp, 3), 1))))))) {
+          return self
+        };
+        if ($truthy($rb_lt(ndigits, ($truthy($rb_gt(exp, 0)) ? ($rb_plus($rb_divide(exp, 3), 1)) : ($rb_divide(exp, 4)))['$-@']()))) {
+          return 0
+        };
         return Math.round(self * Math.pow(10, ndigits)) / Math.pow(10, ndigits);;
       };
-    }, $Number_round$57.$$arity = -1);
-    $alias(self, "succ", "next");
+    }, -1);
     
-    Opal.def(self, '$times', $Number_times$58 = function $$times() {
-      var $iter = $Number_times$58.$$p, block = $iter || nil, $$59, self = this;
+    $def(self, '$times', function $$times() {
+      var block = $$times.$$p || nil, self = this;
 
-      if ($iter) $Number_times$58.$$p = null;
-      
+      delete $$times.$$p;
       
-      if ($iter) $Number_times$58.$$p = null;;
-      if ($truthy(block)) {
-      } else {
-        return $send(self, 'enum_for', ["times"], ($$59 = function(){var self = $$59.$$s == null ? this : $$59.$$s;
+      ;
+      if (!$truthy(block)) {
+        return $send(self, 'enum_for', ["times"], function $$33(){var self = $$33.$$s == null ? this : $$33.$$s;
 
-          return self}, $$59.$$s = self, $$59.$$arity = 0, $$59))
+          return self}, {$$arity: 0, $$s: self})
       };
       
       for (var i = 0; i < self; i++) {
@@ -18197,61 +18032,56 @@ Opal.modules["corelib/number"] = function(Opal) {
       }
     ;
       return self;
-    }, $Number_times$58.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_f', $Number_to_f$60 = function $$to_f() {
+    $def(self, '$to_f', function $$to_f() {
       var self = this;
 
       return self
-    }, $Number_to_f$60.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_i', $Number_to_i$61 = function $$to_i() {
+    $def(self, '$to_i', function $$to_i() {
       var self = this;
 
       return self < 0 ? Math.ceil(self) : Math.floor(self);
-    }, $Number_to_i$61.$$arity = 0);
-    $alias(self, "to_int", "to_i");
+    }, 0);
     
-    Opal.def(self, '$to_r', $Number_to_r$62 = function $$to_r() {
+    $def(self, '$to_r', function $$to_r() {
       var $a, $b, self = this, f = nil, e = nil;
 
-      if ($truthy($$($nesting, 'Integer')['$==='](self))) {
-        return $$($nesting, 'Rational').$new(self, 1)
+      if ($eqeqeq($$$('Integer'), self)) {
+        return $$$('Rational').$new(self, 1)
       } else {
         
-        $b = $$($nesting, 'Math').$frexp(self), $a = Opal.to_ary($b), (f = ($a[0] == null ? nil : $a[0])), (e = ($a[1] == null ? nil : $a[1])), $b;
-        f = $$($nesting, 'Math').$ldexp(f, $$$($$($nesting, 'Float'), 'MANT_DIG')).$to_i();
-        e = $rb_minus(e, $$$($$($nesting, 'Float'), 'MANT_DIG'));
-        return $rb_times(f, $$$($$($nesting, 'Float'), 'RADIX')['$**'](e)).$to_r();
+        $b = $$$('Math').$frexp(self), $a = $to_ary($b), (f = ($a[0] == null ? nil : $a[0])), (e = ($a[1] == null ? nil : $a[1])), $b;
+        f = $$$('Math').$ldexp(f, $$$($$$('Float'), 'MANT_DIG')).$to_i();
+        e = $rb_minus(e, $$$($$$('Float'), 'MANT_DIG'));
+        return $rb_times(f, $$$($$$('Float'), 'RADIX')['$**'](e)).$to_r();
       }
-    }, $Number_to_r$62.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_s', $Number_to_s$63 = function $$to_s(base) {
-      var self = this, $ret_or_16 = nil;
+    $def(self, '$to_s', function $$to_s(base) {
+      var self = this;
 
       
       
-      if (base == null) {
-        base = 10;
+      if (base == null) base = 10;;
+      base = $Opal['$coerce_to!'](base, $$$('Integer'), "to_int");
+      if (($truthy($rb_lt(base, 2)) || ($truthy($rb_gt(base, 36))))) {
+        $Kernel.$raise($$$('ArgumentError'), "invalid radix " + (base))
+      };
+      if (($eqeq(self, 0) && ($truthy(1/self === -Infinity)))) {
+        return "-0.0"
       };
-      base = $$($nesting, 'Opal')['$coerce_to!'](base, $$($nesting, 'Integer'), "to_int");
-      if ($truthy((function() {if ($truthy(($ret_or_16 = $rb_lt(base, 2)))) {
-        return $ret_or_16
-      } else {
-        return $rb_gt(base, 36)
-      }; return nil; })())) {
-        self.$raise($$($nesting, 'ArgumentError'), "" + "invalid radix " + (base))};
       return self.toString(base);;
-    }, $Number_to_s$63.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$truncate', $Number_truncate$64 = function $$truncate(ndigits) {
+    $def(self, '$truncate', function $$truncate(ndigits) {
       var self = this;
 
       
       
-      if (ndigits == null) {
-        ndigits = 0;
-      };
+      if (ndigits == null) ndigits = 0;;
       
       var f = self.$to_f();
 
@@ -18268,113 +18098,106 @@ Opal.modules["corelib/number"] = function(Opal) {
 
       return result;
     ;
-    }, $Number_truncate$64.$$arity = -1);
-    $alias(self, "inspect", "to_s");
+    }, -1);
     
-    Opal.def(self, '$digits', $Number_digits$65 = function $$digits(base) {
+    $def(self, '$digits', function $$digits(base) {
       var self = this;
 
       
       
-      if (base == null) {
-        base = 10;
-      };
+      if (base == null) base = 10;;
       if ($rb_lt(self, 0)) {
-        self.$raise($$$($$($nesting, 'Math'), 'DomainError'), "out of domain")};
-      base = $$($nesting, 'Opal')['$coerce_to!'](base, $$($nesting, 'Integer'), "to_int");
+        $Kernel.$raise($$$($$$('Math'), 'DomainError'), "out of domain")
+      };
+      base = $Opal['$coerce_to!'](base, $$$('Integer'), "to_int");
       if ($truthy($rb_lt(base, 2))) {
-        self.$raise($$($nesting, 'ArgumentError'), "" + "invalid radix " + (base))};
+        $Kernel.$raise($$$('ArgumentError'), "invalid radix " + (base))
+      };
       
+      if (self != parseInt(self)) $Kernel.$raise($$$('NoMethodError'), "undefined method `digits' for " + (self.$inspect()))
+
       var value = self, result = [];
 
-      while (value !== 0) {
+      if (self == 0) {
+        return [0];
+      }
+
+      while (value != 0) {
         result.push(value % base);
         value = parseInt(value / base, 10);
       }
 
       return result;
     ;
-    }, $Number_digits$65.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$divmod', $Number_divmod$66 = function $$divmod(other) {
-      var $iter = $Number_divmod$66.$$p, $yield = $iter || nil, self = this, $ret_or_17 = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+    $def(self, '$divmod', function $$divmod(other) {
+      var $yield = $$divmod.$$p || nil, self = this;
 
-      if ($iter) $Number_divmod$66.$$p = null;
-      // Prepare super implicit arguments
-      for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-        $zuper[$zuper_i] = arguments[$zuper_i];
-      }
-      if ($truthy((function() {if ($truthy(($ret_or_17 = self['$nan?']()))) {
-        return $ret_or_17
-      } else {
-        return other['$nan?']()
-      }; return nil; })())) {
-        return self.$raise($$($nesting, 'FloatDomainError'), "NaN")
+      delete $$divmod.$$p;
+      if (($truthy(self['$nan?']()) || ($truthy(other['$nan?']())))) {
+        return $Kernel.$raise($$$('FloatDomainError'), "NaN")
       } else if ($truthy(self['$infinite?']())) {
-        return self.$raise($$($nesting, 'FloatDomainError'), "Infinity")
+        return $Kernel.$raise($$$('FloatDomainError'), "Infinity")
       } else {
-        return $send2(self, $find_super(self, 'divmod', $Number_divmod$66, false, true), 'divmod', $zuper, $iter)
+        return $send2(self, $find_super(self, 'divmod', $$divmod, false, true), 'divmod', [other], $yield)
       }
-    }, $Number_divmod$66.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$upto', $Number_upto$67 = function $$upto(stop) {
-      var $iter = $Number_upto$67.$$p, block = $iter || nil, $$68, self = this;
+    $def(self, '$upto', function $$upto(stop) {
+      var block = $$upto.$$p || nil, self = this;
 
-      if ($iter) $Number_upto$67.$$p = null;
+      delete $$upto.$$p;
       
-      
-      if ($iter) $Number_upto$67.$$p = null;;
-      if ((block !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["upto", stop], ($$68 = function(){var self = $$68.$$s == null ? this : $$68.$$s;
+      ;
+      if (!(block !== nil)) {
+        return $send(self, 'enum_for', ["upto", stop], function $$34(){var self = $$34.$$s == null ? this : $$34.$$s;
 
           
-          if ($truthy($$($nesting, 'Numeric')['$==='](stop))) {
-          } else {
-            self.$raise($$($nesting, 'ArgumentError'), "" + "comparison of " + (self.$class()) + " with " + (stop.$class()) + " failed")
+          if (!$eqeqeq($$$('Numeric'), stop)) {
+            $Kernel.$raise($$$('ArgumentError'), "comparison of " + (self.$class()) + " with " + (stop.$class()) + " failed")
           };
           if ($truthy($rb_lt(stop, self))) {
             return 0
           } else {
             return $rb_plus($rb_minus(stop, self), 1)
-          };}, $$68.$$s = self, $$68.$$arity = 0, $$68))
+          };}, {$$arity: 0, $$s: self})
       };
       
       if (!stop.$$is_number) {
-        self.$raise($$($nesting, 'ArgumentError'), "" + "comparison of " + (self.$class()) + " with " + (stop.$class()) + " failed")
+        $Kernel.$raise($$$('ArgumentError'), "comparison of " + (self.$class()) + " with " + (stop.$class()) + " failed")
       }
       for (var i = self; i <= stop; i++) {
         block(i);
       }
     ;
       return self;
-    }, $Number_upto$67.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$zero?', $Number_zero$ques$69 = function() {
+    $def(self, '$zero?', function $Number_zero$ques$35() {
       var self = this;
 
       return self == 0;
-    }, $Number_zero$ques$69.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$size', $Number_size$70 = function $$size() {
-      var self = this;
-
+    $def(self, '$size', function $$size() {
+      
       return 4
-    }, $Number_size$70.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$nan?', $Number_nan$ques$71 = function() {
+    $def(self, '$nan?', function $Number_nan$ques$36() {
       var self = this;
 
       return isNaN(self);
-    }, $Number_nan$ques$71.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$finite?', $Number_finite$ques$72 = function() {
+    $def(self, '$finite?', function $Number_finite$ques$37() {
       var self = this;
 
       return self != Infinity && self != -Infinity && !isNaN(self);
-    }, $Number_finite$ques$72.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$infinite?', $Number_infinite$ques$73 = function() {
+    $def(self, '$infinite?', function $Number_infinite$ques$38() {
       var self = this;
 
       
@@ -18388,20 +18211,103 @@ Opal.modules["corelib/number"] = function(Opal) {
         return nil;
       }
     
-    }, $Number_infinite$ques$73.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$positive?', $Number_positive$ques$74 = function() {
+    $def(self, '$positive?', function $Number_positive$ques$39() {
       var self = this;
 
       return self != 0 && (self == Infinity || 1 / self > 0);
-    }, $Number_positive$ques$74.$$arity = 0);
-    return (Opal.def(self, '$negative?', $Number_negative$ques$75 = function() {
+    }, 0);
+    
+    $def(self, '$negative?', function $Number_negative$ques$40() {
       var self = this;
 
       return self == -Infinity || 1 / self < 0;
-    }, $Number_negative$ques$75.$$arity = 0), nil) && 'negative?';
-  })($nesting[0], $$($nesting, 'Numeric'), $nesting);
-  Opal.const_set($nesting[0], 'Fixnum', $$($nesting, 'Number'));
+    }, 0);
+    
+    function numberToUint8Array(num) {
+      var uint8array = new Uint8Array(8);
+      new DataView(uint8array.buffer).setFloat64(0, num, true);
+      return uint8array;
+    }
+
+    function uint8ArrayToNumber(arr) {
+      return new DataView(arr.buffer).getFloat64(0, true);
+    }
+
+    function incrementNumberBit(num) {
+      var arr = numberToUint8Array(num);
+      for (var i = 0; i < arr.length; i++) {
+        if (arr[i] === 0xff) {
+          arr[i] = 0;
+        } else {
+          arr[i]++;
+          break;
+        }
+      }
+      return uint8ArrayToNumber(arr);
+    }
+
+    function decrementNumberBit(num) {
+      var arr = numberToUint8Array(num);
+      for (var i = 0; i < arr.length; i++) {
+        if (arr[i] === 0) {
+          arr[i] = 0xff;
+        } else {
+          arr[i]--;
+          break;
+        }
+      }
+      return uint8ArrayToNumber(arr);
+    }
+  ;
+    
+    $def(self, '$next_float', function $$next_float() {
+      var self = this;
+
+      
+      if ($eqeq(self, $$$($$$('Float'), 'INFINITY'))) {
+        return $$$($$$('Float'), 'INFINITY')
+      };
+      if ($truthy(self['$nan?']())) {
+        return $$$($$$('Float'), 'NAN')
+      };
+      if ($rb_ge(self, 0)) {
+        return incrementNumberBit(Math.abs(self));
+      } else {
+        return decrementNumberBit(self);
+      };
+    }, 0);
+    
+    $def(self, '$prev_float', function $$prev_float() {
+      var self = this;
+
+      
+      if ($eqeq(self, $$$($$$('Float'), 'INFINITY')['$-@']())) {
+        return $$$($$$('Float'), 'INFINITY')['$-@']()
+      };
+      if ($truthy(self['$nan?']())) {
+        return $$$($$$('Float'), 'NAN')
+      };
+      if ($rb_gt(self, 0)) {
+        return decrementNumberBit(self);
+      } else {
+        return -incrementNumberBit(Math.abs(self));
+      };
+    }, 0);
+    $alias(self, "arg", "angle");
+    $alias(self, "eql?", "==");
+    $alias(self, "fdiv", "/");
+    $alias(self, "inspect", "to_s");
+    $alias(self, "kind_of?", "is_a?");
+    $alias(self, "magnitude", "abs");
+    $alias(self, "modulo", "%");
+    $alias(self, "object_id", "__id__");
+    $alias(self, "phase", "angle");
+    $alias(self, "succ", "next");
+    return $alias(self, "to_int", "to_i");
+  })('::', $$$('Numeric'), $nesting);
+  $const_set('::', 'Fixnum', $$$('Number'));
   (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Integer');
 
@@ -18411,34 +18317,39 @@ Opal.modules["corelib/number"] = function(Opal) {
     self.$$is_number_class = true;
     self.$$is_integer_class = true;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting), $allocate$76, $sqrt$77;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
       
-      Opal.def(self, '$allocate', $allocate$76 = function $$allocate() {
+      $def(self, '$allocate', function $$allocate() {
         var self = this;
 
-        return self.$raise($$($nesting, 'TypeError'), "" + "allocator undefined for " + (self.$name()))
-      }, $allocate$76.$$arity = 0);
+        return $Kernel.$raise($$$('TypeError'), "allocator undefined for " + (self.$name()))
+      }, 0);
       
       Opal.udef(self, '$' + "new");;
-      return (Opal.def(self, '$sqrt', $sqrt$77 = function $$sqrt(n) {
-        var self = this;
-
+      
+      $def(self, '$sqrt', function $$sqrt(n) {
+        
         
-        n = $$($nesting, 'Opal')['$coerce_to!'](n, $$($nesting, 'Integer'), "to_int");
+        n = $Opal['$coerce_to!'](n, $$$('Integer'), "to_int");
         
         if (n < 0) {
-          self.$raise($$$($$($nesting, 'Math'), 'DomainError'), "Numerical argument is out of domain - \"isqrt\"")
+          $Kernel.$raise($$$($$$('Math'), 'DomainError'), "Numerical argument is out of domain - \"isqrt\"")
         }
 
         return parseInt(Math.sqrt(n), 10);
       ;
-      }, $sqrt$77.$$arity = 1), nil) && 'sqrt';
+      }, 1);
+      return $def(self, '$try_convert', function $$try_convert(object) {
+        var self = this;
+
+        return $$('Opal')['$coerce_to?'](object, self, "to_int")
+      }, 1);
     })(Opal.get_singleton_class(self), $nesting);
-    Opal.const_set($nesting[0], 'MAX', Math.pow(2, 30) - 1);
-    return Opal.const_set($nesting[0], 'MIN', -Math.pow(2, 30));
-  })($nesting[0], $$($nesting, 'Numeric'), $nesting);
+    $const_set(self, 'MAX', Math.pow(2, 30) - 1);
+    return $const_set(self, 'MIN', -Math.pow(2, 30));
+  })('::', $$$('Numeric'), $nesting);
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Float');
 
@@ -18447,108 +18358,71 @@ Opal.modules["corelib/number"] = function(Opal) {
     
     self.$$is_number_class = true;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting), $allocate$78, $eq_eq_eq$79;
-
       
       
-      Opal.def(self, '$allocate', $allocate$78 = function $$allocate() {
+      
+      $def(self, '$allocate', function $$allocate() {
         var self = this;
 
-        return self.$raise($$($nesting, 'TypeError'), "" + "allocator undefined for " + (self.$name()))
-      }, $allocate$78.$$arity = 0);
+        return $Kernel.$raise($$$('TypeError'), "allocator undefined for " + (self.$name()))
+      }, 0);
       
       Opal.udef(self, '$' + "new");;
-      return (Opal.def(self, '$===', $eq_eq_eq$79 = function(other) {
-        var self = this;
-
+      return $def(self, '$===', function $eq_eq_eq$41(other) {
+        
         return !!other.$$is_number;
-      }, $eq_eq_eq$79.$$arity = 1), nil) && '===';
+      }, 1);
     })(Opal.get_singleton_class(self), $nesting);
-    Opal.const_set($nesting[0], 'INFINITY', Infinity);
-    Opal.const_set($nesting[0], 'MAX', Number.MAX_VALUE);
-    Opal.const_set($nesting[0], 'MIN', Number.MIN_VALUE);
-    Opal.const_set($nesting[0], 'NAN', NaN);
-    Opal.const_set($nesting[0], 'DIG', 15);
-    Opal.const_set($nesting[0], 'MANT_DIG', 53);
-    Opal.const_set($nesting[0], 'RADIX', 2);
-    return Opal.const_set($nesting[0], 'EPSILON', Number.EPSILON || 2.2204460492503130808472633361816E-16);
-  })($nesting[0], $$($nesting, 'Numeric'), $nesting);
+    $const_set(self, 'INFINITY', Infinity);
+    $const_set(self, 'MAX', Number.MAX_VALUE);
+    $const_set(self, 'MIN', Number.MIN_VALUE);
+    $const_set(self, 'NAN', NaN);
+    $const_set(self, 'DIG', 15);
+    $const_set(self, 'MANT_DIG', 53);
+    $const_set(self, 'RADIX', 2);
+    return $const_set(self, 'EPSILON', Number.EPSILON || 2.2204460492503130808472633361816E-16);
+  })('::', $$$('Numeric'), $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/range"] = function(Opal) {
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  function $rb_le(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs <= rhs : lhs['$<='](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_divide(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs / rhs : lhs['$/'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_times(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs * rhs : lhs['$*'](rhs);
-  }
-  function $rb_ge(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs >= rhs : lhs['$>='](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $truthy = Opal.truthy, $send2 = Opal.send2, $find_super = Opal.find_super, $send = Opal.send, $alias = Opal.alias;
+Opal.modules["corelib/range"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $truthy = Opal.truthy, $Kernel = Opal.Kernel, $def = Opal.def, $not = Opal.not, $send2 = Opal.send2, $find_super = Opal.find_super, $rb_lt = Opal.rb_lt, $rb_le = Opal.rb_le, $send = Opal.send, $eqeq = Opal.eqeq, $eqeqeq = Opal.eqeqeq, $rb_gt = Opal.rb_gt, $rb_minus = Opal.rb_minus, $Opal = Opal.Opal, $rb_divide = Opal.rb_divide, $rb_plus = Opal.rb_plus, $rb_times = Opal.rb_times, $rb_ge = Opal.rb_ge, $alias = Opal.alias;
 
-  Opal.add_stubs(['$require', '$include', '$attr_reader', '$raise', '$<=>', '$nil?', '$include?', '$!', '$<', '$<=', '$enum_for', '$size', '$upto', '$to_proc', '$respond_to?', '$class', '$succ', '$==', '$===', '$exclude_end?', '$eql?', '$begin', '$end', '$last', '$to_a', '$>', '$-@', '$-', '$to_i', '$coerce_to!', '$ceil', '$/', '$loop', '$+', '$*', '$>=', '$each_with_index', '$%', '$bsearch', '$inspect', '$[]', '$hash']);
+  Opal.add_stubs('require,include,attr_reader,raise,nil?,<=>,include?,!,<,<=,enum_for,size,upto,to_proc,respond_to?,class,succ,==,===,exclude_end?,eql?,begin,end,last,to_a,>,-@,-,to_i,coerce_to!,ceil,/,is_a?,new,loop,+,*,>=,each_with_index,%,step,bsearch,inspect,[],hash');
   
   self.$require("corelib/enumerable");
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Range');
 
-    var $nesting = [self].concat($parent_nesting), $Range_initialize$1, $Range_$eq_eq_eq$2, $Range_count$3, $Range_to_a$4, $Range_cover$ques$5, $Range_each$6, $Range_eql$ques$8, $Range_exclude_end$ques$9, $Range_first$10, $Range_last$11, $Range_max$12, $Range_min$13, $Range_size$14, $Range_step$15, $Range_bsearch$19, $Range_to_s$20, $Range_inspect$21, $Range_marshal_load$22, $Range_hash$23;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-    self.$$prototype.begin = self.$$prototype.end = self.$$prototype.excl = nil;
+    $proto.begin = $proto.end = $proto.excl = nil;
     
-    self.$include($$($nesting, 'Enumerable'));
+    self.$include($$$('Enumerable'));
     self.$$prototype.$$is_range = true;
     self.$attr_reader("begin", "end");
     
-    Opal.def(self, '$initialize', $Range_initialize$1 = function $$initialize(first, last, exclude) {
-      var self = this, $ret_or_1 = nil, $ret_or_2 = nil;
+    $def(self, '$initialize', function $$initialize(first, last, exclude) {
+      var self = this;
 
       
       
-      if (exclude == null) {
-        exclude = false;
-      };
+      if (exclude == null) exclude = false;;
       if ($truthy(self.begin)) {
-        self.$raise($$($nesting, 'NameError'), "'initialize' called twice")};
-      if ($truthy((function() {if ($truthy(($ret_or_1 = (function() {if ($truthy(($ret_or_2 = first['$<=>'](last)))) {
-        return $ret_or_2
-      } else {
-        return first['$nil?']()
-      }; return nil; })()))) {
-        return $ret_or_1
-      } else {
-        return last['$nil?']()
-      }; return nil; })())) {
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "bad value for range")
+        $Kernel.$raise($$$('NameError'), "'initialize' called twice")
+      };
+      if (!(($truthy(first['$<=>'](last)) || ($truthy(first['$nil?']()))) || ($truthy(last['$nil?']())))) {
+        $Kernel.$raise($$$('ArgumentError'), "bad value for range")
       };
       self.begin = first;
       self.end = last;
       return (self.excl = exclude);
-    }, $Range_initialize$1.$$arity = -3);
+    }, -3);
     
-    Opal.def(self, '$===', $Range_$eq_eq_eq$2 = function(value) {
+    $def(self, '$===', function $Range_$eq_eq_eq$1(value) {
       var self = this;
 
       return self['$include?'](value)
-    }, $Range_$eq_eq_eq$2.$$arity = 1);
+    }, 1);
     
     function is_infinite(self) {
       if (self.begin === nil || self.end === nil ||
@@ -18558,119 +18432,62 @@ Opal.modules["corelib/range"] = function(Opal) {
     }
   ;
     
-    Opal.def(self, '$count', $Range_count$3 = function $$count() {
-      var $iter = $Range_count$3.$$p, block = $iter || nil, self = this, $ret_or_3 = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+    $def(self, '$count', function $$count() {
+      var block = $$count.$$p || nil, self = this;
 
-      if ($iter) $Range_count$3.$$p = null;
-      // Prepare super implicit arguments
-      for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-        $zuper[$zuper_i] = arguments[$zuper_i];
-      }
+      delete $$count.$$p;
       
-      
-      if ($iter) $Range_count$3.$$p = null;;
-      if ($truthy((function() {if ($truthy(($ret_or_3 = (block !== nil)['$!']()))) {
-        return is_infinite(self);
-      } else {
-        return $ret_or_3
-      }; return nil; })())) {
-        return $$$($$($nesting, 'Float'), 'INFINITY')};
-      return $send2(self, $find_super(self, 'count', $Range_count$3, false, true), 'count', $zuper, $iter);
-    }, $Range_count$3.$$arity = 0);
+      ;
+      if (($not((block !== nil)) && ($truthy(is_infinite(self))))) {
+        return $$$($$$('Float'), 'INFINITY')
+      };
+      return $send2(self, $find_super(self, 'count', $$count, false, true), 'count', [], block);
+    }, 0);
     
-    Opal.def(self, '$to_a', $Range_to_a$4 = function $$to_a() {
-      var $iter = $Range_to_a$4.$$p, $yield = $iter || nil, self = this, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+    $def(self, '$to_a', function $$to_a() {
+      var $yield = $$to_a.$$p || nil, self = this;
 
-      if ($iter) $Range_to_a$4.$$p = null;
-      // Prepare super implicit arguments
-      for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-        $zuper[$zuper_i] = arguments[$zuper_i];
-      }
+      delete $$to_a.$$p;
       
       if ($truthy(is_infinite(self))) {
-        self.$raise($$($nesting, 'TypeError'), "cannot convert endless range to an array")};
-      return $send2(self, $find_super(self, 'to_a', $Range_to_a$4, false, true), 'to_a', $zuper, $iter);
-    }, $Range_to_a$4.$$arity = 0);
+        $Kernel.$raise($$$('TypeError'), "cannot convert endless range to an array")
+      };
+      return $send2(self, $find_super(self, 'to_a', $$to_a, false, true), 'to_a', [], $yield);
+    }, 0);
     
-    Opal.def(self, '$cover?', $Range_cover$ques$5 = function(value) {
-      var self = this, beg_cmp = nil, $ret_or_4 = nil, $ret_or_5 = nil, $ret_or_6 = nil, end_cmp = nil, $ret_or_7 = nil, $ret_or_8 = nil, $ret_or_9 = nil, $ret_or_10 = nil, $ret_or_11 = nil, $ret_or_12 = nil, $ret_or_13 = nil;
+    $def(self, '$cover?', function $Range_cover$ques$2(value) {
+      var self = this, beg_cmp = nil, $ret_or_1 = nil, $ret_or_2 = nil, $ret_or_3 = nil, end_cmp = nil;
 
       
-      beg_cmp = (function() {if ($truthy(($ret_or_4 = (function() {if ($truthy(($ret_or_5 = (function() {if ($truthy(($ret_or_6 = self.begin['$nil?']()))) {
-        return -1
-      } else {
-        return $ret_or_6
-      }; return nil; })()))) {
-        return $ret_or_5
-      } else {
-        
-        return self.begin['$<=>'](value);
-      }; return nil; })()))) {
-        return $ret_or_4
-      } else {
-        return false
-      }; return nil; })();
-      end_cmp = (function() {if ($truthy(($ret_or_7 = (function() {if ($truthy(($ret_or_8 = (function() {if ($truthy(($ret_or_9 = self.end['$nil?']()))) {
-        return -1
-      } else {
-        return $ret_or_9
-      }; return nil; })()))) {
-        return $ret_or_8
-      } else {
-        
-        return value['$<=>'](self.end);
-      }; return nil; })()))) {
-        return $ret_or_7
-      } else {
-        return false
-      }; return nil; })();
-      if ($truthy(($ret_or_10 = (function() {if ($truthy(($ret_or_11 = (function() {if ($truthy(self.excl)) {
-        if ($truthy(($ret_or_12 = end_cmp))) {
-          return $rb_lt(end_cmp, 0)
-        } else {
-          return $ret_or_12
-        }
-      } else if ($truthy(($ret_or_13 = end_cmp))) {
-        return $rb_le(end_cmp, 0)
-      } else {
-        return $ret_or_13
-      }; return nil; })()))) {
-        return beg_cmp
-      } else {
-        return $ret_or_11
-      }; return nil; })()))) {
+      beg_cmp = ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = ($truthy(($ret_or_3 = self.begin['$nil?']())) ? (-1) : ($ret_or_3)))) ? ($ret_or_2) : (self.begin['$<=>'](value))))) && ($ret_or_1));
+      end_cmp = ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = ($truthy(($ret_or_3 = self.end['$nil?']())) ? (-1) : ($ret_or_3)))) ? ($ret_or_2) : (value['$<=>'](self.end))))) && ($ret_or_1));
+      if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = ($truthy(self.excl) ? (($truthy(($ret_or_3 = end_cmp)) ? ($rb_lt(end_cmp, 0)) : ($ret_or_3))) : ($truthy(($ret_or_3 = end_cmp)) ? ($rb_le(end_cmp, 0)) : ($ret_or_3))))) ? (beg_cmp) : ($ret_or_2))))) {
         return $rb_le(beg_cmp, 0)
       } else {
-        return $ret_or_10
+        return $ret_or_1
       };
-    }, $Range_cover$ques$5.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$each', $Range_each$6 = function $$each() {
-      var $iter = $Range_each$6.$$p, block = $iter || nil, $$7, $a, self = this, current = nil, last = nil, $ret_or_14 = nil, $ret_or_15 = nil;
+    $def(self, '$each', function $$each() {
+      var block = $$each.$$p || nil, $a, self = this, current = nil, last = nil, $ret_or_1 = nil;
 
-      if ($iter) $Range_each$6.$$p = null;
-      
+      delete $$each.$$p;
       
-      if ($iter) $Range_each$6.$$p = null;;
-      if ((block !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["each"], ($$7 = function(){var self = $$7.$$s == null ? this : $$7.$$s;
+      ;
+      if (!(block !== nil)) {
+        return $send(self, 'enum_for', ["each"], function $$3(){var self = $$3.$$s == null ? this : $$3.$$s;
 
-          return self.$size()}, $$7.$$s = self, $$7.$$arity = 0, $$7))
+          return self.$size()}, {$$arity: 0, $$s: self})
       };
       
       var i, limit;
 
       if (self.begin.$$is_number && self.end.$$is_number) {
         if (self.begin % 1 !== 0 || self.end % 1 !== 0) {
-          self.$raise($$($nesting, 'TypeError'), "can't iterate from Float")
+          $Kernel.$raise($$$('TypeError'), "can't iterate from Float")
         }
 
-        for (i = self.begin, limit = self.end + (function() {if ($truthy(self.excl)) {
-        return 0
-      } else {
-        return 1
-      }; return nil; })(); i < limit; i++) {
+        for (i = self.begin, limit = self.end + ($truthy(self.excl) ? (0) : (1)); i < limit; i++) {
           block(i);
         }
 
@@ -18684,203 +18501,143 @@ Opal.modules["corelib/range"] = function(Opal) {
     ;
       current = self.begin;
       last = self.end;
-      if ($truthy(current['$respond_to?']("succ"))) {
-      } else {
-        self.$raise($$($nesting, 'TypeError'), "" + "can't iterate from " + (current.$class()))
+      if (!$truthy(current['$respond_to?']("succ"))) {
+        $Kernel.$raise($$$('TypeError'), "can't iterate from " + (current.$class()))
       };
-      while ($truthy((function() {if ($truthy(($ret_or_14 = self.end['$nil?']()))) {
-        return $ret_or_14
-      } else {
-        return $rb_lt(current['$<=>'](last), 0)
-      }; return nil; })())) {
+      while ($truthy(($truthy(($ret_or_1 = self.end['$nil?']())) ? ($ret_or_1) : ($rb_lt(current['$<=>'](last), 0))))) {
         
         Opal.yield1(block, current);
         current = current.$succ();
       };
-      if ($truthy((function() {if ($truthy(($ret_or_15 = self.excl['$!']()))) {
-        return current['$=='](last)
-      } else {
-        return $ret_or_15
-      }; return nil; })())) {
-        Opal.yield1(block, current)};
+      if (($not(self.excl) && ($eqeq(current, last)))) {
+        Opal.yield1(block, current)
+      };
       return self;
-    }, $Range_each$6.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$eql?', $Range_eql$ques$8 = function(other) {
-      var self = this, $ret_or_16 = nil, $ret_or_17 = nil;
+    $def(self, '$eql?', function $Range_eql$ques$4(other) {
+      var self = this, $ret_or_1 = nil, $ret_or_2 = nil;
 
       
-      if ($truthy($$($nesting, 'Range')['$==='](other))) {
-      } else {
+      if (!$eqeqeq($$$('Range'), other)) {
         return false
       };
-      if ($truthy(($ret_or_16 = (function() {if ($truthy(($ret_or_17 = self.excl['$==='](other['$exclude_end?']())))) {
-        return self.begin['$eql?'](other.$begin())
-      } else {
-        return $ret_or_17
-      }; return nil; })()))) {
+      if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = self.excl['$==='](other['$exclude_end?']()))) ? (self.begin['$eql?'](other.$begin())) : ($ret_or_2))))) {
         return self.end['$eql?'](other.$end())
       } else {
-        return $ret_or_16
+        return $ret_or_1
       };
-    }, $Range_eql$ques$8.$$arity = 1);
-    $alias(self, "==", "eql?");
+    }, 1);
     
-    Opal.def(self, '$exclude_end?', $Range_exclude_end$ques$9 = function() {
+    $def(self, '$exclude_end?', function $Range_exclude_end$ques$5() {
       var self = this;
 
       return self.excl
-    }, $Range_exclude_end$ques$9.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$first', $Range_first$10 = function $$first(n) {
-      var $iter = $Range_first$10.$$p, $yield = $iter || nil, self = this, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+    $def(self, '$first', function $$first(n) {
+      var $yield = $$first.$$p || nil, self = this;
 
-      if ($iter) $Range_first$10.$$p = null;
-      // Prepare super implicit arguments
-      for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-        $zuper[$zuper_i] = arguments[$zuper_i];
-      }
+      delete $$first.$$p;
       
       ;
       if ($truthy(self.begin['$nil?']())) {
-        self.$raise($$($nesting, 'RangeError'), "cannot get the minimum of beginless range")};
+        $Kernel.$raise($$$('RangeError'), "cannot get the minimum of beginless range")
+      };
       if ($truthy(n == null)) {
-        return self.begin};
-      return $send2(self, $find_super(self, 'first', $Range_first$10, false, true), 'first', $zuper, $iter);
-    }, $Range_first$10.$$arity = -1);
-    $alias(self, "include?", "cover?");
+        return self.begin
+      };
+      return $send2(self, $find_super(self, 'first', $$first, false, true), 'first', [n], $yield);
+    }, -1);
     
-    Opal.def(self, '$last', $Range_last$11 = function $$last(n) {
+    $def(self, '$last', function $$last(n) {
       var self = this;
 
       
       ;
       if ($truthy(self.end['$nil?']())) {
-        self.$raise($$($nesting, 'RangeError'), "cannot get the maximum of endless range")};
+        $Kernel.$raise($$$('RangeError'), "cannot get the maximum of endless range")
+      };
       if ($truthy(n == null)) {
-        return self.end};
+        return self.end
+      };
       return self.$to_a().$last(n);
-    }, $Range_last$11.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$max', $Range_max$12 = function $$max() {
-      var $iter = $Range_max$12.$$p, $yield = $iter || nil, self = this, $ret_or_18 = nil, $ret_or_19 = nil, $ret_or_20 = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+    $def(self, '$max', function $$max() {
+      var $yield = $$max.$$p || nil, self = this;
 
-      if ($iter) $Range_max$12.$$p = null;
-      // Prepare super implicit arguments
-      for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-        $zuper[$zuper_i] = arguments[$zuper_i];
-      }
+      delete $$max.$$p;
       if ($truthy(self.end['$nil?']())) {
-        return self.$raise($$($nesting, 'RangeError'), "cannot get the maximum of endless range")
+        return $Kernel.$raise($$$('RangeError'), "cannot get the maximum of endless range")
       } else if (($yield !== nil)) {
-        return $send2(self, $find_super(self, 'max', $Range_max$12, false, true), 'max', $zuper, $iter)
-      } else if ($truthy((function() {if ($truthy(($ret_or_18 = self.begin['$nil?']()['$!']()))) {
-        
-        if ($truthy(($ret_or_19 = $rb_gt(self.begin, self.end)))) {
-          return $ret_or_19
-        } else if ($truthy(($ret_or_20 = self.excl))) {
-          return self.begin['$=='](self.end)
-        } else {
-          return $ret_or_20
-        };
-      } else {
-        return $ret_or_18
-      }; return nil; })())) {
+        return $send2(self, $find_super(self, 'max', $$max, false, true), 'max', [], $yield)
+      } else if (($not(self.begin['$nil?']()) && (($truthy($rb_gt(self.begin, self.end)) || (($truthy(self.excl) && ($eqeq(self.begin, self.end)))))))) {
         return nil
       } else {
         return self.excl ? self.end - 1 : self.end
       }
-    }, $Range_max$12.$$arity = 0);
-    $alias(self, "member?", "cover?");
+    }, 0);
     
-    Opal.def(self, '$min', $Range_min$13 = function $$min() {
-      var $iter = $Range_min$13.$$p, $yield = $iter || nil, self = this, $ret_or_21 = nil, $ret_or_22 = nil, $ret_or_23 = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+    $def(self, '$min', function $$min() {
+      var $yield = $$min.$$p || nil, self = this;
 
-      if ($iter) $Range_min$13.$$p = null;
-      // Prepare super implicit arguments
-      for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-        $zuper[$zuper_i] = arguments[$zuper_i];
-      }
+      delete $$min.$$p;
       if ($truthy(self.begin['$nil?']())) {
-        return self.$raise($$($nesting, 'RangeError'), "cannot get the minimum of beginless range")
+        return $Kernel.$raise($$$('RangeError'), "cannot get the minimum of beginless range")
       } else if (($yield !== nil)) {
-        return $send2(self, $find_super(self, 'min', $Range_min$13, false, true), 'min', $zuper, $iter)
-      } else if ($truthy((function() {if ($truthy(($ret_or_21 = self.end['$nil?']()['$!']()))) {
-        
-        if ($truthy(($ret_or_22 = $rb_gt(self.begin, self.end)))) {
-          return $ret_or_22
-        } else if ($truthy(($ret_or_23 = self.excl))) {
-          return self.begin['$=='](self.end)
-        } else {
-          return $ret_or_23
-        };
-      } else {
-        return $ret_or_21
-      }; return nil; })())) {
+        return $send2(self, $find_super(self, 'min', $$min, false, true), 'min', [], $yield)
+      } else if (($not(self.end['$nil?']()) && (($truthy($rb_gt(self.begin, self.end)) || (($truthy(self.excl) && ($eqeq(self.begin, self.end)))))))) {
         return nil
       } else {
         return self.begin
       }
-    }, $Range_min$13.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$size', $Range_size$14 = function $$size() {
-      var self = this, infinity = nil, $ret_or_24 = nil, $ret_or_25 = nil, $ret_or_26 = nil, $ret_or_27 = nil, range_begin = nil, range_end = nil;
+    $def(self, '$size', function $$size() {
+      var self = this, infinity = nil, range_begin = nil, range_end = nil;
 
       
-      infinity = $$$($$($nesting, 'Float'), 'INFINITY');
-      if ($truthy((function() {if ($truthy(($ret_or_24 = (function() {if ($truthy(($ret_or_25 = self.begin['$=='](infinity)))) {
-        return self.end['$nil?']()['$!']()
-      } else {
-        return $ret_or_25
-      }; return nil; })()))) {
-        return $ret_or_24
-      } else {
-        
-        if ($truthy(($ret_or_26 = self.end['$=='](infinity['$-@']())))) {
-          return self.begin['$nil?']()['$!']()
-        } else {
-          return $ret_or_26
-        };
-      }; return nil; })())) {
-        return 0};
+      infinity = $$$($$$('Float'), 'INFINITY');
+      if ((($eqeq(self.begin, infinity) && ($not(self.end['$nil?']()))) || (($eqeq(self.end, infinity['$-@']()) && ($not(self.begin['$nil?']())))))) {
+        return 0
+      };
       if ($truthy(is_infinite(self))) {
-        return infinity};
-      if ($truthy((function() {if ($truthy(($ret_or_27 = $$($nesting, 'Numeric')['$==='](self.begin)))) {
-        return $$($nesting, 'Numeric')['$==='](self.end)
-      } else {
-        return $ret_or_27
-      }; return nil; })())) {
-      } else {
+        return infinity
+      };
+      if (!($eqeqeq($$$('Numeric'), self.begin) && ($eqeqeq($$$('Numeric'), self.end)))) {
         return nil
       };
       range_begin = self.begin;
       range_end = self.end;
       if ($truthy(self.excl)) {
-        range_end = $rb_minus(range_end, 1)};
+        range_end = $rb_minus(range_end, 1)
+      };
       if ($truthy($rb_lt(range_end, range_begin))) {
-        return 0};
+        return 0
+      };
       return (Math.abs(range_end - range_begin) + 1).$to_i();
-    }, $Range_size$14.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$step', $Range_step$15 = function $$step(n) {
-      var $$16, $$17, $$18, $iter = $Range_step$15.$$p, $yield = $iter || nil, self = this, i = nil;
+    $def(self, '$step', function $$step(n) {
+      var $yield = $$step.$$p || nil, self = this, $ret_or_1 = nil, i = nil;
 
-      if ($iter) $Range_step$15.$$p = null;
-      
+      delete $$step.$$p;
       
-      if (n == null) {
-        n = 1;
-      };
+      ;
       
       function coerceStepSize() {
-        if (!n.$$is_number) {
-          n = $$($nesting, 'Opal')['$coerce_to!'](n, $$($nesting, 'Integer'), "to_int")
+        if (n == null) {
+          n = 1;
+        }
+        else if (!n.$$is_number) {
+          n = $Opal['$coerce_to!'](n, $$$('Integer'), "to_int")
         }
 
         if (n < 0) {
-          self.$raise($$($nesting, 'ArgumentError'), "step can't be negative")
+          $Kernel.$raise($$$('ArgumentError'), "step can't be negative")
         } else if (n === 0) {
-          self.$raise($$($nesting, 'ArgumentError'), "step can't be 0")
+          $Kernel.$raise($$$('ArgumentError'), "step can't be 0")
         }
       }
 
@@ -18899,7 +18656,7 @@ Opal.modules["corelib/range"] = function(Opal) {
           // n is a float
           var begin = self.begin, end = self.end,
               abs = Math.abs, floor = Math.floor,
-              err = (abs(begin) + abs(end) + abs(end - begin)) / abs(n) * $$$($$($nesting, 'Float'), 'EPSILON'),
+              err = (abs(begin) + abs(end) + abs(end - begin)) / abs(n) * $$$($$$('Float'), 'EPSILON'),
               size;
 
           if (err > 0.5) {
@@ -18919,20 +18676,22 @@ Opal.modules["corelib/range"] = function(Opal) {
         }
       }
     ;
-      if (($yield !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["step", n], ($$16 = function(){var self = $$16.$$s == null ? this : $$16.$$s;
-
-          
-          coerceStepSize();
-          return enumeratorSize();
-        }, $$16.$$s = self, $$16.$$arity = 0, $$16))
+      if (!($yield !== nil)) {
+        if (((($truthy(self.begin['$is_a?']($$('Numeric'))) || ($truthy(self.begin['$nil?']()))) && (($truthy(self.end['$is_a?']($$('Numeric'))) || ($truthy(self.end['$nil?']()))))) && ($not(($truthy(($ret_or_1 = self.begin['$nil?']())) ? (self.end['$nil?']()) : ($ret_or_1)))))) {
+          return $$$($$$('Enumerator'), 'ArithmeticSequence').$new(self, n, "step")
+        } else {
+          return $send(self, 'enum_for', ["step", n], function $$6(){
+            
+            coerceStepSize();
+            return enumeratorSize();
+          }, 0)
+        }
       };
       coerceStepSize();
       if ($truthy(self.begin.$$is_number && self.end.$$is_number)) {
         
         i = 0;
-        (function(){var $brk = Opal.new_brk(); try {return $send(self, 'loop', [], ($$17 = function(){var self = $$17.$$s == null ? this : $$17.$$s, current = nil;
+        (function(){var $brk = Opal.new_brk(); try {return $send(self, 'loop', [], function $$7(){var self = $$7.$$s == null ? this : $$7.$$s, current = nil;
           if (self.begin == null) self.begin = nil;
           if (self.excl == null) self.excl = nil;
           if (self.end == null) self.end = nil;
@@ -18942,148 +18701,128 @@ Opal.modules["corelib/range"] = function(Opal) {
           if ($truthy(self.excl)) {
             if ($truthy($rb_ge(current, self.end))) {
               
-              Opal.brk(nil, $brk)}
+              Opal.brk(nil, $brk)
+            }
           } else if ($truthy($rb_gt(current, self.end))) {
             
-            Opal.brk(nil, $brk)};
+            Opal.brk(nil, $brk)
+          };
           Opal.yield1($yield, current);
-          return (i = $rb_plus(i, 1));}, $$17.$$s = self, $$17.$$brk = $brk, $$17.$$arity = 0, $$17))
+          return (i = $rb_plus(i, 1));}, {$$arity: 0, $$s: self, $$brk: $brk})
         } catch (err) { if (err === $brk) { return err.$v } else { throw err } }})();
       } else {
         
         
         if (self.begin.$$is_string && self.end.$$is_string && n % 1 !== 0) {
-          self.$raise($$($nesting, 'TypeError'), "no implicit conversion to float from string")
+          $Kernel.$raise($$$('TypeError'), "no implicit conversion to float from string")
         }
       ;
-        $send(self, 'each_with_index', [], ($$18 = function(value, idx){var self = $$18.$$s == null ? this : $$18.$$s;
-
+        $send(self, 'each_with_index', [], function $$8(value, idx){
           
           
-          if (value == null) {
-            value = nil;
-          };
+          if (value == null) value = nil;;
           
-          if (idx == null) {
-            idx = nil;
-          };
-          if (idx['$%'](n)['$=='](0)) {
+          if (idx == null) idx = nil;;
+          if ($eqeq(idx['$%'](n), 0)) {
             return Opal.yield1($yield, value);
           } else {
             return nil
-          };}, $$18.$$s = self, $$18.$$arity = 2, $$18));
+          };}, 2);
       };
       return self;
-    }, $Range_step$15.$$arity = -1);
+    }, -1);
+    
+    $def(self, '$%', function $Range_$percent$9(n) {
+      var self = this;
+
+      if (($truthy(self.begin['$is_a?']($$('Numeric'))) && ($truthy(self.end['$is_a?']($$('Numeric')))))) {
+        return $$$($$$('Enumerator'), 'ArithmeticSequence').$new(self, n, "%")
+      } else {
+        return self.$step(n)
+      }
+    }, 1);
     
-    Opal.def(self, '$bsearch', $Range_bsearch$19 = function $$bsearch() {
-      var $iter = $Range_bsearch$19.$$p, block = $iter || nil, self = this;
+    $def(self, '$bsearch', function $$bsearch() {
+      var block = $$bsearch.$$p || nil, self = this;
 
-      if ($iter) $Range_bsearch$19.$$p = null;
+      delete $$bsearch.$$p;
       
-      
-      if ($iter) $Range_bsearch$19.$$p = null;;
-      if ((block !== nil)) {
-      } else {
+      ;
+      if (!(block !== nil)) {
         return self.$enum_for("bsearch")
       };
       if ($truthy(is_infinite(self) && (self.begin.$$is_number || self.end.$$is_number))) {
-        self.$raise($$($nesting, 'NotImplementedError'), "Can't #bsearch an infinite range")};
-      if ($truthy(self.begin.$$is_number && self.end.$$is_number)) {
-      } else {
-        self.$raise($$($nesting, 'TypeError'), "" + "can't do binary search for " + (self.begin.$class()))
+        $Kernel.$raise($$$('NotImplementedError'), "Can't #bsearch an infinite range")
+      };
+      if (!$truthy(self.begin.$$is_number && self.end.$$is_number)) {
+        $Kernel.$raise($$$('TypeError'), "can't do binary search for " + (self.begin.$class()))
       };
       return $send(self.$to_a(), 'bsearch', [], block.$to_proc());
-    }, $Range_bsearch$19.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_s', $Range_to_s$20 = function $$to_s() {
-      var self = this, $ret_or_28 = nil, $ret_or_29 = nil;
+    $def(self, '$to_s', function $$to_s() {
+      var self = this, $ret_or_1 = nil;
 
-      return "" + ((function() {if ($truthy(($ret_or_28 = self.begin))) {
-        return $ret_or_28
-      } else {
-        return ""
-      }; return nil; })()) + ((function() {if ($truthy(self.excl)) {
-        return "..."
-      } else {
-        return ".."
-      }; return nil; })()) + ((function() {if ($truthy(($ret_or_29 = self.end))) {
-        return $ret_or_29
-      } else {
-        return ""
-      }; return nil; })())
-    }, $Range_to_s$20.$$arity = 0);
+      return "" + (($truthy(($ret_or_1 = self.begin)) ? ($ret_or_1) : (""))) + (($truthy(self.excl) ? ("...") : (".."))) + (($truthy(($ret_or_1 = self.end)) ? ($ret_or_1) : ("")))
+    }, 0);
     
-    Opal.def(self, '$inspect', $Range_inspect$21 = function $$inspect() {
-      var self = this, $ret_or_30 = nil, $ret_or_31 = nil;
+    $def(self, '$inspect', function $$inspect() {
+      var self = this, $ret_or_1 = nil;
 
-      return "" + ((function() {if ($truthy(($ret_or_30 = self.begin))) {
-        return self.begin.$inspect()
-      } else {
-        return $ret_or_30
-      }; return nil; })()) + ((function() {if ($truthy(self.excl)) {
-        return "..."
-      } else {
-        return ".."
-      }; return nil; })()) + ((function() {if ($truthy(($ret_or_31 = self.end))) {
-        return self.end.$inspect()
-      } else {
-        return $ret_or_31
-      }; return nil; })())
-    }, $Range_inspect$21.$$arity = 0);
+      return "" + (($truthy(($ret_or_1 = self.begin)) ? (self.begin.$inspect()) : ($ret_or_1))) + (($truthy(self.excl) ? ("...") : (".."))) + (($truthy(($ret_or_1 = self.end)) ? (self.end.$inspect()) : ($ret_or_1)))
+    }, 0);
     
-    Opal.def(self, '$marshal_load', $Range_marshal_load$22 = function $$marshal_load(args) {
+    $def(self, '$marshal_load', function $$marshal_load(args) {
       var self = this;
 
       
       self.begin = args['$[]']("begin");
       self.end = args['$[]']("end");
       return (self.excl = args['$[]']("excl"));
-    }, $Range_marshal_load$22.$$arity = 1);
-    return (Opal.def(self, '$hash', $Range_hash$23 = function $$hash() {
+    }, 1);
+    
+    $def(self, '$hash', function $$hash() {
       var self = this;
 
       return [self.begin, self.end, self.excl].$hash()
-    }, $Range_hash$23.$$arity = 0), nil) && 'hash';
-  })($nesting[0], null, $nesting);
+    }, 0);
+    $alias(self, "==", "eql?");
+    $alias(self, "include?", "cover?");
+    return $alias(self, "member?", "cover?");
+  })('::', null, $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/proc"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $slice = Opal.slice, $klass = Opal.klass, $truthy = Opal.truthy, $alias = Opal.alias, $send = Opal.send;
+Opal.modules["corelib/proc"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var nil = Opal.nil, $$$ = Opal.$$$, $slice = Opal.slice, $klass = Opal.klass, $truthy = Opal.truthy, $Kernel = Opal.Kernel, $defs = Opal.defs, $def = Opal.def, $send = Opal.send, $to_a = Opal.to_a, $Opal = Opal.Opal, $alias = Opal.alias;
 
-  Opal.add_stubs(['$raise', '$proc', '$call', '$to_proc', '$coerce_to!']);
-  return (function($base, $super, $parent_nesting) {
+  Opal.add_stubs('raise,proc,call,to_proc,new,source_location,coerce_to!');
+  return (function($base, $super) {
     var self = $klass($base, $super, 'Proc');
 
-    var $nesting = [self].concat($parent_nesting), $Proc_new$1, $Proc_call$2, $Proc_$gt$gt$3, $Proc_$lt$lt$5, $Proc_to_proc$7, $Proc_lambda$ques$8, $Proc_arity$9, $Proc_source_location$10, $Proc_binding$11, $Proc_parameters$12, $Proc_curry$13, $Proc_dup$14;
-
     
-    Opal.defineProperty(self.$$prototype, '$$is_proc', true);
-    Opal.defineProperty(self.$$prototype, '$$is_lambda', false);
-    Opal.defs(self, '$new', $Proc_new$1 = function() {
-      var $iter = $Proc_new$1.$$p, block = $iter || nil, self = this;
+    
+    Opal.prop(self.$$prototype, '$$is_proc', true);
+    Opal.prop(self.$$prototype, '$$is_lambda', false);
+    $defs(self, '$new', function $Proc_new$1() {
+      var block = $Proc_new$1.$$p || nil;
 
-      if ($iter) $Proc_new$1.$$p = null;
+      delete $Proc_new$1.$$p;
       
-      
-      if ($iter) $Proc_new$1.$$p = null;;
-      if ($truthy(block)) {
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "tried to create a Proc object without a block")
+      ;
+      if (!$truthy(block)) {
+        $Kernel.$raise($$$('ArgumentError'), "tried to create a Proc object without a block")
       };
       return block;
-    }, $Proc_new$1.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$call', $Proc_call$2 = function $$call($a) {
-      var $iter = $Proc_call$2.$$p, block = $iter || nil, $post_args, args, self = this;
+    $def(self, '$call', function $$call($a) {
+      var block = $$call.$$p || nil, $post_args, args, self = this;
 
-      if ($iter) $Proc_call$2.$$p = null;
+      delete $$call.$$p;
       
+      ;
       
-      if ($iter) $Proc_call$2.$$p = null;;
-      
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
       
@@ -19121,58 +18860,55 @@ Opal.modules["corelib/proc"] = function(Opal) {
 
       return result;
     ;
-    }, $Proc_call$2.$$arity = -1);
-    $alias(self, "[]", "call");
-    $alias(self, "===", "call");
-    $alias(self, "yield", "call");
+    }, -1);
     
-    Opal.def(self, '$>>', $Proc_$gt$gt$3 = function(other) {
-      var $$4, $iter = $Proc_$gt$gt$3.$$p, $yield = $iter || nil, self = this;
+    $def(self, '$>>', function $Proc_$gt$gt$2(other) {
+      var $yield = $Proc_$gt$gt$2.$$p || nil, self = this;
 
-      if ($iter) $Proc_$gt$gt$3.$$p = null;
-      return $send(self, 'proc', [], ($$4 = function($a){var self = $$4.$$s == null ? this : $$4.$$s, $iter = $$4.$$p, block = $iter || nil, $post_args, args, out = nil;
+      delete $Proc_$gt$gt$2.$$p;
+      return $send($Kernel, 'proc', [], function $$3($a){var block = $$3.$$p || nil, $post_args, args, self = $$3.$$s == null ? this : $$3.$$s, out = nil;
 
+        delete $$3.$$p;
         
+        ;
         
-        if ($iter) $$4.$$p = null;;
-        
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
+        $post_args = Opal.slice.call(arguments);
         
         args = $post_args;;
-        out = $send(self, 'call', Opal.to_a(args), block.$to_proc());
-        return other.$call(out);}, $$4.$$s = self, $$4.$$arity = -1, $$4))
-    }, $Proc_$gt$gt$3.$$arity = 1);
+        out = $send(self, 'call', $to_a(args), block.$to_proc());
+        return other.$call(out);}, {$$arity: -1, $$s: self})
+    }, 1);
     
-    Opal.def(self, '$<<', $Proc_$lt$lt$5 = function(other) {
-      var $$6, $iter = $Proc_$lt$lt$5.$$p, $yield = $iter || nil, self = this;
+    $def(self, '$<<', function $Proc_$lt$lt$4(other) {
+      var $yield = $Proc_$lt$lt$4.$$p || nil, self = this;
 
-      if ($iter) $Proc_$lt$lt$5.$$p = null;
-      return $send(self, 'proc', [], ($$6 = function($a){var self = $$6.$$s == null ? this : $$6.$$s, $iter = $$6.$$p, block = $iter || nil, $post_args, args, out = nil;
+      delete $Proc_$lt$lt$4.$$p;
+      return $send($Kernel, 'proc', [], function $$5($a){var block = $$5.$$p || nil, $post_args, args, self = $$5.$$s == null ? this : $$5.$$s, out = nil;
 
+        delete $$5.$$p;
         
+        ;
         
-        if ($iter) $$6.$$p = null;;
-        
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
+        $post_args = Opal.slice.call(arguments);
         
         args = $post_args;;
-        out = $send(other, 'call', Opal.to_a(args), block.$to_proc());
-        return self.$call(out);}, $$6.$$s = self, $$6.$$arity = -1, $$6))
-    }, $Proc_$lt$lt$5.$$arity = 1);
+        out = $send(other, 'call', $to_a(args), block.$to_proc());
+        return self.$call(out);}, {$$arity: -1, $$s: self})
+    }, 1);
     
-    Opal.def(self, '$to_proc', $Proc_to_proc$7 = function $$to_proc() {
+    $def(self, '$to_proc', function $$to_proc() {
       var self = this;
 
       return self
-    }, $Proc_to_proc$7.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$lambda?', $Proc_lambda$ques$8 = function() {
+    $def(self, '$lambda?', function $Proc_lambda$ques$6() {
       var self = this;
 
       return !!self.$$is_lambda;
-    }, $Proc_lambda$ques$8.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$arity', $Proc_arity$9 = function $$arity() {
+    $def(self, '$arity', function $$arity() {
       var self = this;
 
       
@@ -19182,25 +18918,29 @@ Opal.modules["corelib/proc"] = function(Opal) {
         return self.$$arity;
       }
     
-    }, $Proc_arity$9.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$source_location', $Proc_source_location$10 = function $$source_location() {
+    $def(self, '$source_location', function $$source_location() {
       var self = this;
 
       
       if (self.$$is_curried) { return nil; };
       return nil;
-    }, $Proc_source_location$10.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$binding', $Proc_binding$11 = function $$binding() {
-      var self = this;
+    $def(self, '$binding', function $$binding() {
+      var $a, self = this;
 
       
-      if (self.$$is_curried) { self.$raise($$($nesting, 'ArgumentError'), "Can't create Binding") };
-      return nil;
-    }, $Proc_binding$11.$$arity = 0);
+      if (self.$$is_curried) { $Kernel.$raise($$$('ArgumentError'), "Can't create Binding") };
+      if ($truthy((($a = $$$('::', 'Binding', 'skip_raise')) ? 'constant' : nil))) {
+        return $$$('Binding').$new(nil, [], self.$$s, self.$source_location())
+      } else {
+        return nil
+      };
+    }, 0);
     
-    Opal.def(self, '$parameters', $Proc_parameters$12 = function $$parameters() {
+    $def(self, '$parameters', function $$parameters() {
       var self = this;
 
       
@@ -19229,9 +18969,9 @@ Opal.modules["corelib/proc"] = function(Opal) {
         return [];
       }
     
-    }, $Proc_parameters$12.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$curry', $Proc_curry$13 = function $$curry(arity) {
+    $def(self, '$curry', function $$curry(arity) {
       var self = this;
 
       
@@ -19241,9 +18981,9 @@ Opal.modules["corelib/proc"] = function(Opal) {
         arity = self.length;
       }
       else {
-        arity = $$($nesting, 'Opal')['$coerce_to!'](arity, $$($nesting, 'Integer'), "to_int");
+        arity = $Opal['$coerce_to!'](arity, $$$('Integer'), "to_int");
         if (self.$$is_lambda && arity !== self.length) {
-          self.$raise($$($nesting, 'ArgumentError'), "" + "wrong number of arguments (" + (arity) + " for " + (self.length) + ")")
+          $Kernel.$raise($$$('ArgumentError'), "wrong number of arguments (" + (arity) + " for " + (self.length) + ")")
         }
       }
 
@@ -19253,7 +18993,7 @@ Opal.modules["corelib/proc"] = function(Opal) {
             result;
 
         if (length > arity && self.$$is_lambda && !self.$$is_curried) {
-          self.$raise($$($nesting, 'ArgumentError'), "" + "wrong number of arguments (" + (length) + " for " + (arity) + ")")
+          $Kernel.$raise($$$('ArgumentError'), "wrong number of arguments (" + (length) + " for " + (arity) + ")")
         }
 
         if (length >= arity) {
@@ -19274,9 +19014,9 @@ Opal.modules["corelib/proc"] = function(Opal) {
       curried.$$is_curried = true;
       return curried;
     ;
-    }, $Proc_curry$13.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$dup', $Proc_dup$14 = function $$dup() {
+    $def(self, '$dup', function $$dup() {
       var self = this;
 
       
@@ -19293,27 +19033,29 @@ Opal.modules["corelib/proc"] = function(Opal) {
 
       return proc;
     
-    }, $Proc_dup$14.$$arity = 0);
-    return $alias(self, "clone", "dup");
-  })($nesting[0], Function, $nesting)
+    }, 0);
+    $alias(self, "===", "call");
+    $alias(self, "clone", "dup");
+    $alias(self, "yield", "call");
+    return $alias(self, "[]", "call");
+  })('::', Function)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/method"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $truthy = Opal.truthy, $alias = Opal.alias;
+Opal.modules["corelib/method"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $def = Opal.def, $truthy = Opal.truthy, $alias = Opal.alias, $Kernel = Opal.Kernel, $send = Opal.send, $to_a = Opal.to_a;
 
-  Opal.add_stubs(['$attr_reader', '$arity', '$>>', '$<<', '$new', '$class', '$join', '$source_location', '$raise']);
+  Opal.add_stubs('attr_reader,arity,curry,>>,<<,new,class,join,source_location,raise,call,bind,to_proc');
   
-  (function($base, $super, $parent_nesting) {
+  (function($base, $super) {
     var self = $klass($base, $super, 'Method');
 
-    var $nesting = [self].concat($parent_nesting), $Method_initialize$1, $Method_arity$2, $Method_parameters$3, $Method_source_location$4, $Method_comments$5, $Method_call$6, $Method_$gt$gt$7, $Method_$lt$lt$8, $Method_unbind$9, $Method_to_proc$10, $Method_inspect$11;
+    var $proto = self.$$prototype;
 
-    self.$$prototype.method = self.$$prototype.receiver = self.$$prototype.owner = self.$$prototype.name = nil;
+    $proto.method = $proto.receiver = $proto.owner = $proto.name = nil;
     
     self.$attr_reader("owner", "receiver", "name");
     
-    Opal.def(self, '$initialize', $Method_initialize$1 = function $$initialize(receiver, owner, method, name) {
+    $def(self, '$initialize', function $$initialize(receiver, owner, method, name) {
       var self = this;
 
       
@@ -19321,21 +19063,21 @@ Opal.modules["corelib/method"] = function(Opal) {
       self.owner = owner;
       self.name = name;
       return (self.method = method);
-    }, $Method_initialize$1.$$arity = 4);
+    }, 4);
     
-    Opal.def(self, '$arity', $Method_arity$2 = function $$arity() {
+    $def(self, '$arity', function $$arity() {
       var self = this;
 
       return self.method.$arity()
-    }, $Method_arity$2.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$parameters', $Method_parameters$3 = function $$parameters() {
+    $def(self, '$parameters', function $$parameters() {
       var self = this;
 
       return self.method.$$parameters
-    }, $Method_parameters$3.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$source_location', $Method_source_location$4 = function $$source_location() {
+    $def(self, '$source_location', function $$source_location() {
       var self = this, $ret_or_1 = nil;
 
       if ($truthy(($ret_or_1 = self.method.$$source_location))) {
@@ -19343,27 +19085,26 @@ Opal.modules["corelib/method"] = function(Opal) {
       } else {
         return ["(eval)", 0]
       }
-    }, $Method_source_location$4.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$comments', $Method_comments$5 = function $$comments() {
-      var self = this, $ret_or_2 = nil;
+    $def(self, '$comments', function $$comments() {
+      var self = this, $ret_or_1 = nil;
 
-      if ($truthy(($ret_or_2 = self.method.$$comments))) {
-        return $ret_or_2
+      if ($truthy(($ret_or_1 = self.method.$$comments))) {
+        return $ret_or_1
       } else {
         return []
       }
-    }, $Method_comments$5.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$call', $Method_call$6 = function $$call($a) {
-      var $iter = $Method_call$6.$$p, block = $iter || nil, $post_args, args, self = this;
+    $def(self, '$call', function $$call($a) {
+      var block = $$call.$$p || nil, $post_args, args, self = this;
 
-      if ($iter) $Method_call$6.$$p = null;
-      
+      delete $$call.$$p;
       
-      if ($iter) $Method_call$6.$$p = null;;
+      ;
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
       
@@ -19371,28 +19112,35 @@ Opal.modules["corelib/method"] = function(Opal) {
 
       return self.method.apply(self.receiver, args);
     ;
-    }, $Method_call$6.$$arity = -1);
-    $alias(self, "[]", "call");
+    }, -1);
+    
+    $def(self, '$curry', function $$curry(arity) {
+      var self = this;
+
+      
+      ;
+      return self.method.$curry(arity);
+    }, -1);
     
-    Opal.def(self, '$>>', $Method_$gt$gt$7 = function(other) {
+    $def(self, '$>>', function $Method_$gt$gt$1(other) {
       var self = this;
 
       return self.method['$>>'](other)
-    }, $Method_$gt$gt$7.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$<<', $Method_$lt$lt$8 = function(other) {
+    $def(self, '$<<', function $Method_$lt$lt$2(other) {
       var self = this;
 
       return self.method['$<<'](other)
-    }, $Method_$lt$lt$8.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$unbind', $Method_unbind$9 = function $$unbind() {
+    $def(self, '$unbind', function $$unbind() {
       var self = this;
 
-      return $$($nesting, 'UnboundMethod').$new(self.receiver.$class(), self.owner, self.method, self.name)
-    }, $Method_unbind$9.$$arity = 0);
+      return $$$('UnboundMethod').$new(self.receiver.$class(), self.owner, self.method, self.name)
+    }, 0);
     
-    Opal.def(self, '$to_proc', $Method_to_proc$10 = function $$to_proc() {
+    $def(self, '$to_proc', function $$to_proc() {
       var self = this;
 
       
@@ -19403,23 +19151,26 @@ Opal.modules["corelib/method"] = function(Opal) {
       proc.$$parameters = self.method.$$parameters;
       return proc;
     
-    }, $Method_to_proc$10.$$arity = 0);
-    return (Opal.def(self, '$inspect', $Method_inspect$11 = function $$inspect() {
+    }, 0);
+    
+    $def(self, '$inspect', function $$inspect() {
       var self = this;
 
-      return "" + "#<" + (self.$class()) + ": " + (self.receiver.$class()) + "#" + (self.name) + " (defined in " + (self.owner) + " in " + (self.$source_location().$join(":")) + ")>"
-    }, $Method_inspect$11.$$arity = 0), nil) && 'inspect';
-  })($nesting[0], null, $nesting);
-  return (function($base, $super, $parent_nesting) {
+      return "#<" + (self.$class()) + ": " + (self.receiver.$class()) + "#" + (self.name) + " (defined in " + (self.owner) + " in " + (self.$source_location().$join(":")) + ")>"
+    }, 0);
+    $alias(self, "[]", "call");
+    return $alias(self, "===", "call");
+  })('::', null);
+  return (function($base, $super) {
     var self = $klass($base, $super, 'UnboundMethod');
 
-    var $nesting = [self].concat($parent_nesting), $UnboundMethod_initialize$12, $UnboundMethod_arity$13, $UnboundMethod_parameters$14, $UnboundMethod_source_location$15, $UnboundMethod_comments$16, $UnboundMethod_bind$17, $UnboundMethod_inspect$18;
+    var $proto = self.$$prototype;
 
-    self.$$prototype.method = self.$$prototype.owner = self.$$prototype.name = self.$$prototype.source = nil;
+    $proto.method = $proto.owner = $proto.name = $proto.source = nil;
     
     self.$attr_reader("source", "owner", "name");
     
-    Opal.def(self, '$initialize', $UnboundMethod_initialize$12 = function $$initialize(source, owner, method, name) {
+    $def(self, '$initialize', function $$initialize(source, owner, method, name) {
       var self = this;
 
       
@@ -19427,312 +19178,634 @@ Opal.modules["corelib/method"] = function(Opal) {
       self.owner = owner;
       self.method = method;
       return (self.name = name);
-    }, $UnboundMethod_initialize$12.$$arity = 4);
+    }, 4);
     
-    Opal.def(self, '$arity', $UnboundMethod_arity$13 = function $$arity() {
+    $def(self, '$arity', function $$arity() {
       var self = this;
 
       return self.method.$arity()
-    }, $UnboundMethod_arity$13.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$parameters', $UnboundMethod_parameters$14 = function $$parameters() {
+    $def(self, '$parameters', function $$parameters() {
       var self = this;
 
       return self.method.$$parameters
-    }, $UnboundMethod_parameters$14.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$source_location', $UnboundMethod_source_location$15 = function $$source_location() {
-      var self = this, $ret_or_3 = nil;
+    $def(self, '$source_location', function $$source_location() {
+      var self = this, $ret_or_1 = nil;
 
-      if ($truthy(($ret_or_3 = self.method.$$source_location))) {
-        return $ret_or_3
+      if ($truthy(($ret_or_1 = self.method.$$source_location))) {
+        return $ret_or_1
       } else {
         return ["(eval)", 0]
       }
-    }, $UnboundMethod_source_location$15.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$comments', $UnboundMethod_comments$16 = function $$comments() {
-      var self = this, $ret_or_4 = nil;
+    $def(self, '$comments', function $$comments() {
+      var self = this, $ret_or_1 = nil;
 
-      if ($truthy(($ret_or_4 = self.method.$$comments))) {
-        return $ret_or_4
+      if ($truthy(($ret_or_1 = self.method.$$comments))) {
+        return $ret_or_1
       } else {
         return []
       }
-    }, $UnboundMethod_comments$16.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$bind', $UnboundMethod_bind$17 = function $$bind(object) {
+    $def(self, '$bind', function $$bind(object) {
       var self = this;
 
       
       if (self.owner.$$is_module || Opal.is_a(object, self.owner)) {
-        return $$($nesting, 'Method').$new(object, self.owner, self.method, self.name);
+        return $$$('Method').$new(object, self.owner, self.method, self.name);
       }
       else {
-        self.$raise($$($nesting, 'TypeError'), "" + "can't bind singleton method to a different class (expected " + (object) + ".kind_of?(" + (self.owner) + " to be true)");
+        $Kernel.$raise($$$('TypeError'), "can't bind singleton method to a different class (expected " + (object) + ".kind_of?(" + (self.owner) + " to be true)");
       }
     
-    }, $UnboundMethod_bind$17.$$arity = 1);
-    return (Opal.def(self, '$inspect', $UnboundMethod_inspect$18 = function $$inspect() {
+    }, 1);
+    
+    $def(self, '$bind_call', function $$bind_call(object, $a) {
+      var block = $$bind_call.$$p || nil, $post_args, args, self = this;
+
+      delete $$bind_call.$$p;
+      
+      ;
+      
+      $post_args = Opal.slice.call(arguments, 1);
+      
+      args = $post_args;;
+      return $send(self.$bind(object), 'call', $to_a(args), block.$to_proc());
+    }, -2);
+    return $def(self, '$inspect', function $$inspect() {
       var self = this;
 
-      return "" + "#<" + (self.$class()) + ": " + (self.source) + "#" + (self.name) + " (defined in " + (self.owner) + " in " + (self.$source_location().$join(":")) + ")>"
-    }, $UnboundMethod_inspect$18.$$arity = 0), nil) && 'inspect';
-  })($nesting[0], null, $nesting);
+      return "#<" + (self.$class()) + ": " + (self.source) + "#" + (self.name) + " (defined in " + (self.owner) + " in " + (self.$source_location().$join(":")) + ")>"
+    }, 0);
+  })('::', null);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/variables"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $gvars = Opal.gvars, $hash2 = Opal.hash2;
+Opal.modules["corelib/variables"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var nil = Opal.nil, $gvars = Opal.gvars, $const_set = Opal.const_set, $Object = Opal.Object, $hash2 = Opal.hash2;
 
-  Opal.add_stubs(['$new']);
+  Opal.add_stubs('new');
   
   $gvars['&'] = $gvars['~'] = $gvars['`'] = $gvars["'"] = nil;
   $gvars.LOADED_FEATURES = ($gvars["\""] = Opal.loaded_features);
   $gvars.LOAD_PATH = ($gvars[":"] = []);
   $gvars["/"] = "\n";
   $gvars[","] = nil;
-  Opal.const_set($nesting[0], 'ARGV', []);
-  Opal.const_set($nesting[0], 'ARGF', $$($nesting, 'Object').$new());
-  Opal.const_set($nesting[0], 'ENV', $hash2([], {}));
+  $const_set('::', 'ARGV', []);
+  $const_set('::', 'ARGF', $Object.$new());
+  $const_set('::', 'ENV', $hash2([], {}));
   $gvars.VERBOSE = false;
   $gvars.DEBUG = false;
   return ($gvars.SAFE = 0);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/io"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $module = Opal.module, $gvars = Opal.gvars, $send = Opal.send, $writer = nil;
+Opal.modules["corelib/io"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $const_set = Opal.const_set, $not = Opal.not, $truthy = Opal.truthy, $def = Opal.def, $Kernel = Opal.Kernel, $gvars = Opal.gvars, $send = Opal.send, $to_a = Opal.to_a, $rb_plus = Opal.rb_plus, $neqeq = Opal.neqeq, $range = Opal.range, $hash2 = Opal.hash2, $eqeq = Opal.eqeq, $to_ary = Opal.to_ary, $rb_gt = Opal.rb_gt, $alias = Opal.alias, $rb_minus = Opal.rb_minus, $writer = nil;
 
-  Opal.add_stubs(['$attr_accessor', '$size', '$write', '$String', '$chomp', '$getbyte', '$getc', '$raise', '$new', '$write_proc=', '$-', '$extend']);
+  Opal.add_stubs('attr_reader,attr_accessor,!,match?,include?,size,write,String,flatten,puts,sysread_noraise,+,!=,[],ord,getc,readchar,raise,gets,==,to_str,length,split,sub,sysread,>,to_a,each_line,enum_for,getbyte,closed_write?,closed_read?,new,write_proc=,-,read_proc=');
   
-  (function($base, $super, $parent_nesting) {
+  (function($base, $super) {
     var self = $klass($base, $super, 'IO');
 
-    var $nesting = [self].concat($parent_nesting), $IO_tty$ques$1, $IO_closed$ques$2, $IO_write$3, $IO_flush$4;
+    var $proto = self.$$prototype;
 
-    self.$$prototype.closed = nil;
+    $proto.fd = $proto.read_buffer = $proto.closed = nil;
     
-    Opal.const_set($nesting[0], 'SEEK_SET', 0);
-    Opal.const_set($nesting[0], 'SEEK_CUR', 1);
-    Opal.const_set($nesting[0], 'SEEK_END', 2);
+    $const_set(self, 'SEEK_SET', 0);
+    $const_set(self, 'SEEK_CUR', 1);
+    $const_set(self, 'SEEK_END', 2);
+    $const_set(self, 'SEEK_DATA', 3);
+    $const_set(self, 'SEEK_HOLE', 4);
+    $const_set(self, 'READABLE', 1);
+    $const_set(self, 'WRITABLE', 4);
+    self.$attr_reader("eof");
+    self.$attr_accessor("read_proc", "sync", "tty", "write_proc");
     
-    Opal.def(self, '$tty?', $IO_tty$ques$1 = function() {
+    $def(self, '$initialize', function $$initialize(fd, flags) {
       var self = this;
 
-      return self.tty == true;
-    }, $IO_tty$ques$1.$$arity = 0);
+      
+      
+      if (flags == null) flags = "r";;
+      self.fd = fd;
+      self.flags = flags;
+      self.eof = false;
+      if (($truthy(flags['$include?']("r")) && ($not(flags['$match?'](/[wa+]/))))) {
+        return (self.closed = "write")
+      } else if (($truthy(flags['$match?'](/[wa]/)) && ($not(flags['$match?'](/[r+]/))))) {
+        return (self.closed = "read")
+      } else {
+        return nil
+      };
+    }, -2);
     
-    Opal.def(self, '$closed?', $IO_closed$ques$2 = function() {
+    $def(self, '$fileno', function $$fileno() {
       var self = this;
 
-      return self.closed
-    }, $IO_closed$ques$2.$$arity = 0);
-    self.$attr_accessor("write_proc");
+      return self.fd
+    }, 0);
     
-    Opal.def(self, '$write', $IO_write$3 = function $$write(string) {
+    $def(self, '$tty?', function $IO_tty$ques$1() {
+      var self = this;
+
+      return self.tty == true;
+    }, 0);
+    
+    $def(self, '$write', function $$write(string) {
       var self = this;
 
       
       self.write_proc(string);
       return string.$size();
-    }, $IO_write$3.$$arity = 1);
-    self.$attr_accessor("sync", "tty");
+    }, 1);
     
-    Opal.def(self, '$flush', $IO_flush$4 = function $$flush() {
+    $def(self, '$flush', function $$flush() {
+      
+      return nil
+    }, 0);
+    
+    $def(self, '$<<', function $IO_$lt$lt$2(string) {
       var self = this;
 
-      return nil
-    }, $IO_flush$4.$$arity = 0);
-    (function($base, $parent_nesting) {
-      var self = $module($base, 'Writable');
+      
+      self.$write(string);
+      return self;
+    }, 1);
+    
+    $def(self, '$print', function $$print($a) {
+      var $post_args, args, self = this;
+      if ($gvars[","] == null) $gvars[","] = nil;
 
-      var $nesting = [self].concat($parent_nesting), $Writable_$lt$lt$5, $Writable_print$6, $Writable_puts$7;
+      
+      
+      $post_args = Opal.slice.call(arguments);
+      
+      args = $post_args;;
+      
+      for (var i = 0, ii = args.length; i < ii; i++) {
+        args[i] = $Kernel.$String(args[i])
+      }
+      self.$write(args.join($gvars[","]));
+    ;
+      return nil;
+    }, -1);
+    
+    $def(self, '$puts', function $$puts($a) {
+      var $post_args, args, self = this;
 
       
       
-      Opal.def(self, '$<<', $Writable_$lt$lt$5 = function(string) {
-        var self = this;
+      $post_args = Opal.slice.call(arguments);
+      
+      args = $post_args;;
+      
+      var line
+      if (args.length === 0) {
+        self.$write("\n");
+        return nil;
+      } else {
+        for (var i = 0, ii = args.length; i < ii; i++) {
+          if (args[i].$$is_array){
+            var ary = (args[i]).$flatten()
+            if (ary.length > 0) $send(self, 'puts', $to_a((ary)))
+          } else {
+            if (args[i].$$is_string) {
+              line = args[i].valueOf();
+            } else {
+              line = $Kernel.$String(args[i]);
+            }
+            if (!line.endsWith("\n")) line += "\n"
+            self.$write(line)
+          }
+        }
+      }
+    ;
+      return nil;
+    }, -1);
+    
+    $def(self, '$getc', function $$getc() {
+      var $a, self = this, $ret_or_1 = nil, parts = nil, ret = nil;
 
+      
+      self.read_buffer = ($truthy(($ret_or_1 = self.read_buffer)) ? ($ret_or_1) : (""));
+      parts = "";
+      do {
         
-        self.$write(string);
-        return self;
-      }, $Writable_$lt$lt$5.$$arity = 1);
+        self.read_buffer = $rb_plus(self.read_buffer, parts);
+        if ($neqeq(self.read_buffer, "")) {
+          
+          ret = self.read_buffer['$[]'](0);
+          self.read_buffer = self.read_buffer['$[]']($range(1, -1, false));
+          return ret;
+        };
+      } while ($truthy((parts = self.$sysread_noraise(1))));;
+      return nil;
+    }, 0);
+    
+    $def(self, '$getbyte', function $$getbyte() {
+      var $a, self = this;
+
+      return ($a = self.$getc(), ($a === nil || $a == null) ? nil : $send($a, 'ord', []))
+    }, 0);
+    
+    $def(self, '$readbyte', function $$readbyte() {
+      var self = this;
+
+      return self.$readchar().$ord()
+    }, 0);
+    
+    $def(self, '$readchar', function $$readchar() {
+      var self = this, $ret_or_1 = nil;
+
+      if ($truthy(($ret_or_1 = self.$getc()))) {
+        return $ret_or_1
+      } else {
+        return $Kernel.$raise($$$('EOFError'), "end of file reached")
+      }
+    }, 0);
+    
+    $def(self, '$readline', function $$readline($a) {
+      var $post_args, args, self = this, $ret_or_1 = nil;
+
+      
+      
+      $post_args = Opal.slice.call(arguments);
       
-      Opal.def(self, '$print', $Writable_print$6 = function $$print($a) {
-        var $post_args, args, self = this;
-        if ($gvars[","] == null) $gvars[","] = nil;
+      args = $post_args;;
+      if ($truthy(($ret_or_1 = $send(self, 'gets', $to_a(args))))) {
+        return $ret_or_1
+      } else {
+        return $Kernel.$raise($$$('EOFError'), "end of file reached")
+      };
+    }, -1);
+    
+    $def(self, '$gets', function $$gets(sep, limit, opts) {
+      var $a, $b, $c, self = this, orig_sep = nil, $ret_or_1 = nil, seplen = nil, data = nil, ret = nil, orig_buffer = nil;
+      if ($gvars["/"] == null) $gvars["/"] = nil;
 
+      
+      
+      if (sep == null) sep = false;;
+      
+      if (limit == null) limit = nil;;
+      
+      if (opts == null) opts = $hash2([], {});;
+      if (($truthy(sep.$$is_number) && ($not(limit)))) {
+        $a = [false, sep, limit], (sep = $a[0]), (limit = $a[1]), (opts = $a[2]), $a
+      };
+      if ((($truthy(sep.$$is_hash) && ($not(limit))) && ($eqeq(opts, $hash2([], {}))))) {
+        $a = [false, nil, sep], (sep = $a[0]), (limit = $a[1]), (opts = $a[2]), $a
+      } else if (($truthy(limit.$$is_hash) && ($eqeq(opts, $hash2([], {}))))) {
+        $a = [sep, nil, limit], (sep = $a[0]), (limit = $a[1]), (opts = $a[2]), $a
+      };
+      orig_sep = sep;
+      if ($eqeq(sep, false)) {
+        sep = $gvars["/"]
+      };
+      if ($eqeq(sep, "")) {
+        sep = /\r?\n\r?\n/
+      };
+      sep = ($truthy(($ret_or_1 = sep)) ? ($ret_or_1) : (""));
+      if (!$eqeq(orig_sep, "")) {
+        sep = sep.$to_str()
+      };
+      seplen = ($eqeq(orig_sep, "") ? (2) : (sep.$length()));
+      if ($eqeq(sep, " ")) {
+        sep = / /
+      };
+      self.read_buffer = ($truthy(($ret_or_1 = self.read_buffer)) ? ($ret_or_1) : (""));
+      data = "";
+      ret = nil;
+      do {
         
+        self.read_buffer = $rb_plus(self.read_buffer, data);
+        if (($neqeq(sep, "") && ($truthy(($truthy(sep.$$is_regexp) ? (self.read_buffer['$match?'](sep)) : (self.read_buffer['$include?'](sep))))))) {
+          
+          orig_buffer = self.read_buffer;
+          $c = self.read_buffer.$split(sep, 2), $b = $to_ary($c), (ret = ($b[0] == null ? nil : $b[0])), (self.read_buffer = ($b[1] == null ? nil : $b[1])), $c;
+          if ($neqeq(ret, orig_buffer)) {
+            ret = $rb_plus(ret, orig_buffer['$[]'](ret.$length(), seplen))
+          };
+          break;;
+        };
+      } while ($truthy((data = self.$sysread_noraise(($eqeq(sep, "") ? (65536) : (1))))));;
+      if (!$truthy(ret)) {
         
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
-        
-        args = $post_args;;
+        $a = [($truthy(($ret_or_1 = self.read_buffer)) ? ($ret_or_1) : ("")), ""], (ret = $a[0]), (self.read_buffer = $a[1]), $a;
+        if ($eqeq(ret, "")) {
+          ret = nil
+        };
+      };
+      if ($truthy(ret)) {
         
-        for (var i = 0, ii = args.length; i < ii; i++) {
-          args[i] = self.$String(args[i])
-        }
-        self.$write(args.join($gvars[","]));
-      ;
-        return nil;
-      }, $Writable_print$6.$$arity = -1);
-      return (Opal.def(self, '$puts', $Writable_puts$7 = function $$puts($a) {
-        var $post_args, args, self = this;
-        if ($gvars["/"] == null) $gvars["/"] = nil;
+        if ($truthy(limit)) {
+          
+          ret = ret['$[]'](Opal.Range.$new(0,limit, true));
+          self.read_buffer = $rb_plus(ret['$[]'](Opal.Range.$new(limit, -1, false)), self.read_buffer);
+        };
+        if ($truthy(opts['$[]']("chomp"))) {
+          ret = ret.$sub(/\r?\n$/, "")
+        };
+        if ($eqeq(orig_sep, "")) {
+          ret = ret.$sub(/^[\r\n]+/, "")
+        };
+      };
+      if ($eqeq(orig_sep, false)) {
+        $gvars._ = ret
+      };
+      return ret;
+    }, -1);
+    
+    $def(self, '$sysread', function $$sysread(integer) {
+      var self = this, $ret_or_1 = nil;
 
+      if ($truthy(($ret_or_1 = self.read_proc(integer)))) {
+        return $ret_or_1
+      } else {
         
+        self.eof = true;
+        return $Kernel.$raise($$$('EOFError'), "end of file reached");
+      }
+    }, 1);
+    
+    $def(self, '$sysread_noraise', function $$sysread_noraise(integer) {
+      var self = this;
+
+      try {
+        return self.$sysread(integer)
+      } catch ($err) {
+        if (Opal.rescue($err, [$$$('EOFError')])) {
+          try {
+            return nil
+          } finally { Opal.pop_exception(); }
+        } else { throw $err; }
+      }
+    }, 1);
+    
+    $def(self, '$readpartial', function $$readpartial(integer) {
+      var $a, self = this, $ret_or_1 = nil, part = nil, ret = nil;
+
+      
+      self.read_buffer = ($truthy(($ret_or_1 = self.read_buffer)) ? ($ret_or_1) : (""));
+      part = self.$sysread(integer);
+      $a = [$rb_plus(self.read_buffer, ($truthy(($ret_or_1 = part)) ? ($ret_or_1) : (""))), ""], (ret = $a[0]), (self.read_buffer = $a[1]), $a;
+      if ($eqeq(ret, "")) {
+        ret = nil
+      };
+      return ret;
+    }, 1);
+    
+    $def(self, '$read', function $$read(integer) {
+      var $a, $b, self = this, $ret_or_1 = nil, parts = nil, ret = nil;
+
+      
+      
+      if (integer == null) integer = nil;;
+      self.read_buffer = ($truthy(($ret_or_1 = self.read_buffer)) ? ($ret_or_1) : (""));
+      parts = "";
+      ret = nil;
+      do {
         
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
-        
-        args = $post_args;;
-        
-        for (var i = 0, ii = args.length; i < ii; i++) {
-          args[i] = self.$String(args[i]).$chomp()
-        }
-        self.$write(args.concat([nil]).join($gvars["/"]));
-      ;
-        return nil;
-      }, $Writable_puts$7.$$arity = -1), nil) && 'puts';
-    })($nesting[0], $nesting);
-    return (function($base, $parent_nesting) {
-      var self = $module($base, 'Readable');
+        self.read_buffer = $rb_plus(self.read_buffer, parts);
+        if (($truthy(integer) && ($truthy($rb_gt(self.read_buffer.$length(), integer))))) {
+          
+          $b = [self.read_buffer['$[]'](Opal.Range.$new(0,integer, true)), self.read_buffer['$[]'](Opal.Range.$new(integer, -1, false))], (ret = $b[0]), (self.read_buffer = $b[1]), $b;
+          return ret;
+        };
+      } while ($truthy((parts = self.$sysread_noraise(($truthy(($ret_or_1 = integer)) ? ($ret_or_1) : (65536))))));;
+      $a = [self.read_buffer, ""], (ret = $a[0]), (self.read_buffer = $a[1]), $a;
+      return ret;
+    }, -1);
+    
+    $def(self, '$readlines', function $$readlines(separator) {
+      var self = this;
+      if ($gvars["/"] == null) $gvars["/"] = nil;
 
-      var $nesting = [self].concat($parent_nesting), $Readable_readbyte$8, $Readable_readchar$9, $Readable_readline$10, $Readable_readpartial$11;
+      
+      
+      if (separator == null) separator = $gvars["/"];;
+      return self.$each_line(separator).$to_a();
+    }, -1);
+    
+    $def(self, '$each', function $$each($a, $b) {
+      var block = $$each.$$p || nil, $post_args, sep, args, $c, self = this, s = nil;
+      if ($gvars["/"] == null) $gvars["/"] = nil;
 
+      delete $$each.$$p;
       
+      ;
       
-      Opal.def(self, '$readbyte', $Readable_readbyte$8 = function $$readbyte() {
-        var self = this;
+      $post_args = Opal.slice.call(arguments);
+      
+      if ($post_args.length > 0) sep = $post_args.shift();
+      if (sep == null) sep = $gvars["/"];;
+      
+      args = $post_args;;
+      if (!(block !== nil)) {
+        return $send(self, 'enum_for', ["each", sep].concat($to_a(args)))
+      };
+      while ($truthy((s = $send(self, 'gets', [sep].concat($to_a(args)))))) {
+        Opal.yield1(block, s)
+      };
+      return self;
+    }, -1);
+    
+    $def(self, '$each_byte', function $$each_byte() {
+      var block = $$each_byte.$$p || nil, $a, self = this, s = nil;
 
-        return self.$getbyte()
-      }, $Readable_readbyte$8.$$arity = 0);
+      delete $$each_byte.$$p;
       
-      Opal.def(self, '$readchar', $Readable_readchar$9 = function $$readchar() {
-        var self = this;
+      ;
+      if (!(block !== nil)) {
+        return self.$enum_for("each_byte")
+      };
+      while ($truthy((s = self.$getbyte()))) {
+        Opal.yield1(block, s)
+      };
+      return self;
+    }, 0);
+    
+    $def(self, '$each_char', function $$each_char() {
+      var block = $$each_char.$$p || nil, $a, self = this, s = nil;
+
+      delete $$each_char.$$p;
+      
+      ;
+      if (!(block !== nil)) {
+        return self.$enum_for("each_char")
+      };
+      while ($truthy((s = self.$getc()))) {
+        Opal.yield1(block, s)
+      };
+      return self;
+    }, 0);
+    
+    $def(self, '$close', function $$close() {
+      var self = this;
+
+      return (self.closed = "both")
+    }, 0);
+    
+    $def(self, '$close_read', function $$close_read() {
+      var self = this;
+
+      if ($eqeq(self.closed, "write")) {
+        return (self.closed = "both")
+      } else {
+        return (self.closed = "read")
+      }
+    }, 0);
+    
+    $def(self, '$close_write', function $$close_write() {
+      var self = this;
+
+      if ($eqeq(self.closed, "read")) {
+        return (self.closed = "both")
+      } else {
+        return (self.closed = "write")
+      }
+    }, 0);
+    
+    $def(self, '$closed?', function $IO_closed$ques$3() {
+      var self = this;
+
+      return self.closed['$==']("both")
+    }, 0);
+    
+    $def(self, '$closed_read?', function $IO_closed_read$ques$4() {
+      var self = this, $ret_or_1 = nil;
+
+      if ($truthy(($ret_or_1 = self.closed['$==']("read")))) {
+        return $ret_or_1
+      } else {
+        return self.closed['$==']("both")
+      }
+    }, 0);
+    
+    $def(self, '$closed_write?', function $IO_closed_write$ques$5() {
+      var self = this, $ret_or_1 = nil;
 
-        return self.$getc()
-      }, $Readable_readchar$9.$$arity = 0);
-      
-      Opal.def(self, '$readline', $Readable_readline$10 = function $$readline(sep) {
-        var self = this;
-        if ($gvars["/"] == null) $gvars["/"] = nil;
+      if ($truthy(($ret_or_1 = self.closed['$==']("write")))) {
+        return $ret_or_1
+      } else {
+        return self.closed['$==']("both")
+      }
+    }, 0);
+    
+    $def(self, '$check_writable', function $$check_writable() {
+      var self = this;
 
-        
-        
-        if (sep == null) {
-          sep = $gvars["/"];
-        };
-        return self.$raise($$($nesting, 'NotImplementedError'));
-      }, $Readable_readline$10.$$arity = -1);
-      return (Opal.def(self, '$readpartial', $Readable_readpartial$11 = function $$readpartial(integer, outbuf) {
-        var self = this;
+      if ($truthy(self['$closed_write?']())) {
+        return $Kernel.$raise($$$('IOError'), "not opened for writing")
+      } else {
+        return nil
+      }
+    }, 0);
+    
+    $def(self, '$check_readable', function $$check_readable() {
+      var self = this;
 
-        
-        
-        if (outbuf == null) {
-          outbuf = nil;
-        };
-        return self.$raise($$($nesting, 'NotImplementedError'));
-      }, $Readable_readpartial$11.$$arity = -2), nil) && 'readpartial';
-    })($nesting[0], $nesting);
-  })($nesting[0], null, $nesting);
-  Opal.const_set($nesting[0], 'STDERR', ($gvars.stderr = $$($nesting, 'IO').$new()));
-  Opal.const_set($nesting[0], 'STDIN', ($gvars.stdin = $$($nesting, 'IO').$new()));
-  Opal.const_set($nesting[0], 'STDOUT', ($gvars.stdout = $$($nesting, 'IO').$new()));
+      if ($truthy(self['$closed_read?']())) {
+        return $Kernel.$raise($$$('IOError'), "not opened for reading")
+      } else {
+        return nil
+      }
+    }, 0);
+    $alias(self, "each_line", "each");
+    return $alias(self, "eof?", "eof");
+  })('::', null);
+  $const_set('::', 'STDIN', ($gvars.stdin = $$$('IO').$new(0, "r")));
+  $const_set('::', 'STDOUT', ($gvars.stdout = $$$('IO').$new(1, "w")));
+  $const_set('::', 'STDERR', ($gvars.stderr = $$$('IO').$new(2, "w")));
   var console = Opal.global.console;
   
   $writer = [typeof(process) === 'object' && typeof(process.stdout) === 'object' ? function(s){process.stdout.write(s)} : function(s){console.log(s)}];
-  $send($$($nesting, 'STDOUT'), 'write_proc=', Opal.to_a($writer));
+  $send($$$('STDOUT'), 'write_proc=', $to_a($writer));
   $writer[$rb_minus($writer["length"], 1)];;
   
   $writer = [typeof(process) === 'object' && typeof(process.stderr) === 'object' ? function(s){process.stderr.write(s)} : function(s){console.warn(s)}];
-  $send($$($nesting, 'STDERR'), 'write_proc=', Opal.to_a($writer));
+  $send($$$('STDERR'), 'write_proc=', $to_a($writer));
   $writer[$rb_minus($writer["length"], 1)];;
-  $$($nesting, 'STDOUT').$extend($$$($$($nesting, 'IO'), 'Writable'));
-  return $$($nesting, 'STDERR').$extend($$$($$($nesting, 'IO'), 'Writable'));
+  
+  $writer = [function(s) { var p = prompt(); if (p !== null) return p + "\n"; return nil; }];
+  $send($$$('STDIN'), 'read_proc=', $to_a($writer));
+  return $writer[$rb_minus($writer["length"], 1)];;
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/regexp_anchors"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module;
+Opal.modules["opal/regexp_anchors"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $const_set = Opal.const_set;
 
-  Opal.add_stubs(['$new']);
+  Opal.add_stubs('new');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Opal');
 
-    var $nesting = [self].concat($parent_nesting);
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
-    Opal.const_set($nesting[0], 'REGEXP_START', "^");
-    Opal.const_set($nesting[0], 'REGEXP_END', "$");
-    Opal.const_set($nesting[0], 'FORBIDDEN_STARTING_IDENTIFIER_CHARS', "\\u0001-\\u002F\\u003A-\\u0040\\u005B-\\u005E\\u0060\\u007B-\\u007F");
-    Opal.const_set($nesting[0], 'FORBIDDEN_ENDING_IDENTIFIER_CHARS', "\\u0001-\\u0020\\u0022-\\u002F\\u003A-\\u003E\\u0040\\u005B-\\u005E\\u0060\\u007B-\\u007F");
-    Opal.const_set($nesting[0], 'INLINE_IDENTIFIER_REGEXP', $$($nesting, 'Regexp').$new("" + "[^" + ($$($nesting, 'FORBIDDEN_STARTING_IDENTIFIER_CHARS')) + "]*[^" + ($$($nesting, 'FORBIDDEN_ENDING_IDENTIFIER_CHARS')) + "]"));
-    Opal.const_set($nesting[0], 'FORBIDDEN_CONST_NAME_CHARS', "\\u0001-\\u0020\\u0021-\\u002F\\u003B-\\u003F\\u0040\\u005B-\\u005E\\u0060\\u007B-\\u007F");
-    return Opal.const_set($nesting[0], 'CONST_NAME_REGEXP', $$($nesting, 'Regexp').$new("" + ($$($nesting, 'REGEXP_START')) + "(::)?[A-Z][^" + ($$($nesting, 'FORBIDDEN_CONST_NAME_CHARS')) + "]*" + ($$($nesting, 'REGEXP_END'))));
+    $const_set(self, 'REGEXP_START', "^");
+    $const_set(self, 'REGEXP_END', "$");
+    $const_set(self, 'FORBIDDEN_STARTING_IDENTIFIER_CHARS', "\\u0001-\\u002F\\u003A-\\u0040\\u005B-\\u005E\\u0060\\u007B-\\u007F");
+    $const_set(self, 'FORBIDDEN_ENDING_IDENTIFIER_CHARS', "\\u0001-\\u0020\\u0022-\\u002F\\u003A-\\u003E\\u0040\\u005B-\\u005E\\u0060\\u007B-\\u007F");
+    $const_set(self, 'INLINE_IDENTIFIER_REGEXP', $$('Regexp').$new("[^" + ($$$(self, 'FORBIDDEN_STARTING_IDENTIFIER_CHARS')) + "]*[^" + ($$$(self, 'FORBIDDEN_ENDING_IDENTIFIER_CHARS')) + "]"));
+    $const_set(self, 'FORBIDDEN_CONST_NAME_CHARS', "\\u0001-\\u0020\\u0021-\\u002F\\u003B-\\u003F\\u0040\\u005B-\\u005E\\u0060\\u007B-\\u007F");
+    return $const_set(self, 'CONST_NAME_REGEXP', $$('Regexp').$new("" + ($$$(self, 'REGEXP_START')) + "(::)?[A-Z][^" + ($$$(self, 'FORBIDDEN_CONST_NAME_CHARS')) + "]*" + ($$$(self, 'REGEXP_END'))));
   })($nesting[0], $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["opal/mini"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$;
+Opal.modules["opal/mini"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var nil = Opal.nil, $Object = Opal.Object;
 
-  Opal.add_stubs(['$require']);
+  Opal.add_stubs('require');
   
-  self.$require("opal/base");
-  self.$require("corelib/nil");
-  self.$require("corelib/boolean");
-  self.$require("corelib/string");
-  self.$require("corelib/comparable");
-  self.$require("corelib/enumerable");
-  self.$require("corelib/enumerator");
-  self.$require("corelib/array");
-  self.$require("corelib/hash");
-  self.$require("corelib/number");
-  self.$require("corelib/range");
-  self.$require("corelib/proc");
-  self.$require("corelib/method");
-  self.$require("corelib/regexp");
-  self.$require("corelib/variables");
-  self.$require("corelib/io");
-  return self.$require("opal/regexp_anchors");
+  $Object.$require("opal/base");
+  $Object.$require("corelib/nil");
+  $Object.$require("corelib/boolean");
+  $Object.$require("corelib/string");
+  $Object.$require("corelib/comparable");
+  $Object.$require("corelib/enumerable");
+  $Object.$require("corelib/enumerator");
+  $Object.$require("corelib/array");
+  $Object.$require("corelib/hash");
+  $Object.$require("corelib/number");
+  $Object.$require("corelib/range");
+  $Object.$require("corelib/proc");
+  $Object.$require("corelib/method");
+  $Object.$require("corelib/regexp");
+  $Object.$require("corelib/variables");
+  $Object.$require("corelib/io");
+  return $Object.$require("opal/regexp_anchors");
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/kernel/format"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $coerce_to = Opal.coerce_to, $module = Opal.module, $truthy = Opal.truthy, $gvars = Opal.gvars, $alias = Opal.alias;
+Opal.modules["corelib/kernel/format"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var nil = Opal.nil, $$$ = Opal.$$$, $coerce_to = Opal.coerce_to, $module = Opal.module, $truthy = Opal.truthy, $eqeq = Opal.eqeq, $Opal = Opal.Opal, $Kernel = Opal.Kernel, $gvars = Opal.gvars, $def = Opal.def, $alias = Opal.alias;
 
-  Opal.add_stubs(['$==', '$length', '$respond_to?', '$[]', '$coerce_to?', '$nil?', '$to_a', '$raise', '$to_int', '$fetch', '$Integer', '$Float', '$to_ary', '$to_str', '$inspect', '$to_s']);
-  return (function($base, $parent_nesting) {
+  Opal.add_stubs('respond_to?,[],==,length,coerce_to?,nil?,to_a,raise,to_int,fetch,Integer,Float,to_ary,to_str,inspect,to_s');
+  return (function($base) {
     var self = $module($base, 'Kernel');
 
-    var $nesting = [self].concat($parent_nesting), $Kernel_format$1;
-
     
     
-    Opal.def(self, '$format', $Kernel_format$1 = function $$format(format_string, $a) {
-      var $post_args, args, self = this, $ret_or_1 = nil, ary = nil;
+    
+    $def(self, '$format', function $$format(format_string, $a) {
+      var $post_args, args, ary = nil;
       if ($gvars.DEBUG == null) $gvars.DEBUG = nil;
 
       
       
-      $post_args = Opal.slice.call(arguments, 1, arguments.length);
+      $post_args = Opal.slice.call(arguments, 1);
       
       args = $post_args;;
-      if ($truthy((function() {if ($truthy(($ret_or_1 = args.$length()['$=='](1)))) {
-        return args['$[]'](0)['$respond_to?']("to_ary")
-      } else {
-        return $ret_or_1
-      }; return nil; })())) {
+      if (($eqeq(args.$length(), 1) && ($truthy(args['$[]'](0)['$respond_to?']("to_ary"))))) {
         
-        ary = $$($nesting, 'Opal')['$coerce_to?'](args['$[]'](0), $$($nesting, 'Array'), "to_ary");
-        if ($truthy(ary['$nil?']())) {
-        } else {
+        ary = $Opal['$coerce_to?'](args['$[]'](0), $$$('Array'), "to_ary");
+        if (!$truthy(ary['$nil?']())) {
           args = ary.$to_a()
-        };};
+        };
+      };
       
       var result = '',
           //used for slicing:
@@ -19776,24 +19849,24 @@ Opal.modules["corelib/kernel/format"] = function(Opal) {
           FPREC0 = 128;
 
       function CHECK_FOR_FLAGS() {
-        if (flags&FWIDTH) { self.$raise($$($nesting, 'ArgumentError'), "flag after width") }
-        if (flags&FPREC0) { self.$raise($$($nesting, 'ArgumentError'), "flag after precision") }
+        if (flags&FWIDTH) { $Kernel.$raise($$$('ArgumentError'), "flag after width") }
+        if (flags&FPREC0) { $Kernel.$raise($$$('ArgumentError'), "flag after precision") }
       }
 
       function CHECK_FOR_WIDTH() {
-        if (flags&FWIDTH) { self.$raise($$($nesting, 'ArgumentError'), "width given twice") }
-        if (flags&FPREC0) { self.$raise($$($nesting, 'ArgumentError'), "width after precision") }
+        if (flags&FWIDTH) { $Kernel.$raise($$$('ArgumentError'), "width given twice") }
+        if (flags&FPREC0) { $Kernel.$raise($$$('ArgumentError'), "width after precision") }
       }
 
       function GET_NTH_ARG(num) {
-        if (num >= args.length) { self.$raise($$($nesting, 'ArgumentError'), "too few arguments") }
+        if (num >= args.length) { $Kernel.$raise($$$('ArgumentError'), "too few arguments") }
         return args[num];
       }
 
       function GET_NEXT_ARG() {
         switch (pos_arg_num) {
-        case -1: self.$raise($$($nesting, 'ArgumentError'), "" + "unnumbered(" + (seq_arg_num) + ") mixed with numbered") // raise
-        case -2: self.$raise($$($nesting, 'ArgumentError'), "" + "unnumbered(" + (seq_arg_num) + ") mixed with named") // raise
+        case -1: $Kernel.$raise($$$('ArgumentError'), "unnumbered(" + (seq_arg_num) + ") mixed with numbered") // raise
+        case -2: $Kernel.$raise($$$('ArgumentError'), "unnumbered(" + (seq_arg_num) + ") mixed with named") // raise
         }
         pos_arg_num = seq_arg_num++;
         return GET_NTH_ARG(pos_arg_num - 1);
@@ -19801,13 +19874,13 @@ Opal.modules["corelib/kernel/format"] = function(Opal) {
 
       function GET_POS_ARG(num) {
         if (pos_arg_num > 0) {
-          self.$raise($$($nesting, 'ArgumentError'), "" + "numbered(" + (num) + ") after unnumbered(" + (pos_arg_num) + ")")
+          $Kernel.$raise($$$('ArgumentError'), "numbered(" + (num) + ") after unnumbered(" + (pos_arg_num) + ")")
         }
         if (pos_arg_num === -2) {
-          self.$raise($$($nesting, 'ArgumentError'), "" + "numbered(" + (num) + ") after named")
+          $Kernel.$raise($$$('ArgumentError'), "numbered(" + (num) + ") after named")
         }
         if (num < 1) {
-          self.$raise($$($nesting, 'ArgumentError'), "" + "invalid index - " + (num) + "$")
+          $Kernel.$raise($$$('ArgumentError'), "invalid index - " + (num) + "$")
         }
         pos_arg_num = -1;
         return GET_NTH_ARG(num - 1);
@@ -19821,13 +19894,13 @@ Opal.modules["corelib/kernel/format"] = function(Opal) {
         var num, str = '';
         for (;; i++) {
           if (i === len) {
-            self.$raise($$($nesting, 'ArgumentError'), "malformed format string - %*[0-9]")
+            $Kernel.$raise($$$('ArgumentError'), "malformed format string - %*[0-9]")
           }
           if (format_string.charCodeAt(i) < 48 || format_string.charCodeAt(i) > 57) {
             i--;
             num = parseInt(str, 10) || 0;
             if (num > 2147483647) {
-              self.$raise($$($nesting, 'ArgumentError'), "" + (label) + " too big")
+              $Kernel.$raise($$$('ArgumentError'), "" + (label) + " too big")
             }
             return num;
           }
@@ -19914,7 +19987,7 @@ Opal.modules["corelib/kernel/format"] = function(Opal) {
                 break format_sequence;
               }
               if (next_arg !== undefined) {
-                self.$raise($$($nesting, 'ArgumentError'), "" + "value given twice - %" + (tmp_num) + "$")
+                $Kernel.$raise($$$('ArgumentError'), "value given twice - %" + (tmp_num) + "$")
               }
               next_arg = GET_POS_ARG(tmp_num);
               i++;
@@ -19934,20 +20007,20 @@ Opal.modules["corelib/kernel/format"] = function(Opal) {
 
             for (;; i++) {
               if (i === len) {
-                self.$raise($$($nesting, 'ArgumentError'), "malformed name - unmatched parenthesis")
+                $Kernel.$raise($$$('ArgumentError'), "malformed name - unmatched parenthesis")
               }
               if (format_string.charAt(i) === closing_brace_char) {
 
                 if (pos_arg_num > 0) {
-                  self.$raise($$($nesting, 'ArgumentError'), "" + "named " + (hash_parameter_key) + " after unnumbered(" + (pos_arg_num) + ")")
+                  $Kernel.$raise($$$('ArgumentError'), "named " + (hash_parameter_key) + " after unnumbered(" + (pos_arg_num) + ")")
                 }
                 if (pos_arg_num === -1) {
-                  self.$raise($$($nesting, 'ArgumentError'), "" + "named " + (hash_parameter_key) + " after numbered")
+                  $Kernel.$raise($$$('ArgumentError'), "named " + (hash_parameter_key) + " after numbered")
                 }
                 pos_arg_num = -2;
 
                 if (args[0] === undefined || !args[0].$$is_hash) {
-                  self.$raise($$($nesting, 'ArgumentError'), "one hash required")
+                  $Kernel.$raise($$$('ArgumentError'), "one hash required")
                 }
 
                 next_arg = (args[0]).$fetch(hash_parameter_key);
@@ -19982,7 +20055,7 @@ Opal.modules["corelib/kernel/format"] = function(Opal) {
 
           case '.':
             if (flags&FPREC0) {
-              self.$raise($$($nesting, 'ArgumentError'), "precision given twice")
+              $Kernel.$raise($$$('ArgumentError'), "precision given twice")
             }
             flags |= FPREC|FPREC0;
             precision = 0;
@@ -20001,7 +20074,7 @@ Opal.modules["corelib/kernel/format"] = function(Opal) {
           case 'd':
           case 'i':
           case 'u':
-            arg = self.$Integer(GET_ARG());
+            arg = $Kernel.$Integer(GET_ARG());
             if (arg >= 0) {
               str = arg.toString();
               while (str.length < precision) { str = '0' + str; }
@@ -20062,7 +20135,7 @@ Opal.modules["corelib/kernel/format"] = function(Opal) {
               base_neg_zero_digit = 'f';
               break;
             }
-            arg = self.$Integer(GET_ARG());
+            arg = $Kernel.$Integer(GET_ARG());
             if (arg >= 0) {
               str = arg.toString(base_number);
               while (str.length < precision) { str = '0' + str; }
@@ -20130,7 +20203,7 @@ Opal.modules["corelib/kernel/format"] = function(Opal) {
           case 'E':
           case 'g':
           case 'G':
-            arg = self.$Float(GET_ARG());
+            arg = $Kernel.$Float(GET_ARG());
             if (arg >= 0 || isNaN(arg)) {
               if (arg === Infinity) {
                 str = 'Inf';
@@ -20209,7 +20282,7 @@ Opal.modules["corelib/kernel/format"] = function(Opal) {
           case 'a':
           case 'A':
             // Not implemented because there are no specs for this field type.
-            self.$raise($$($nesting, 'NotImplementedError'), "`A` and `a` format field types are not implemented in Opal yet")
+            $Kernel.$raise($$$('NotImplementedError'), "`A` and `a` format field types are not implemented in Opal yet")
             // raise
 
           case 'c':
@@ -20218,10 +20291,10 @@ Opal.modules["corelib/kernel/format"] = function(Opal) {
             if ((arg)['$respond_to?']("to_str")) {
               str = (arg).$to_str();
             } else {
-              str = String.fromCharCode($coerce_to(arg, $$($nesting, 'Integer'), 'to_int'));
+              str = String.fromCharCode($coerce_to(arg, $$$('Integer'), 'to_int'));
             }
             if (str.length !== 1) {
-              self.$raise($$($nesting, 'ArgumentError'), "%c requires a character")
+              $Kernel.$raise($$$('ArgumentError'), "%c requires a character")
             }
             if (flags&FMINUS) {
               while (str.length < width) { str = str + ' '; }
@@ -20251,12 +20324,12 @@ Opal.modules["corelib/kernel/format"] = function(Opal) {
             break format_sequence;
 
           default:
-            self.$raise($$($nesting, 'ArgumentError'), "" + "malformed format string - %" + (format_string.charAt(i)))
+            $Kernel.$raise($$$('ArgumentError'), "malformed format string - %" + (format_string.charAt(i)))
           }
         }
 
         if (str === undefined) {
-          self.$raise($$($nesting, 'ArgumentError'), "malformed format string - %")
+          $Kernel.$raise($$$('ArgumentError'), "malformed format string - %")
         }
 
         result += format_string.slice(begin_slice, end_slice) + str;
@@ -20264,65 +20337,40 @@ Opal.modules["corelib/kernel/format"] = function(Opal) {
       }
 
       if ($gvars.DEBUG && pos_arg_num >= 0 && seq_arg_num < args.length) {
-        self.$raise($$($nesting, 'ArgumentError'), "too many arguments for format string")
+        $Kernel.$raise($$$('ArgumentError'), "too many arguments for format string")
       }
 
       return result + format_string.slice(begin_slice);
     ;
-    }, $Kernel_format$1.$$arity = -2);
+    }, -2);
     return $alias(self, "sprintf", "format");
-  })($nesting[0], $nesting)
+  })('::')
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/string/encoding"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var $$14, $$17, $$20, $$22, $$25, $$27, self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $hash2 = Opal.hash2, $truthy = Opal.truthy, $send = Opal.send, $alias = Opal.alias, $writer = nil;
+Opal.modules["corelib/string/encoding"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $hash2 = Opal.hash2, $rb_plus = Opal.rb_plus, $truthy = Opal.truthy, $send = Opal.send, $defs = Opal.defs, $eqeq = Opal.eqeq, $def = Opal.def, $Kernel = Opal.Kernel, $Opal = Opal.Opal, $rb_lt = Opal.rb_lt, $alias = Opal.alias, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $writer = nil;
 
-  Opal.add_stubs(['$require', '$+', '$[]', '$clone', '$initialize', '$new', '$instance_eval', '$to_proc', '$each', '$const_set', '$tr', '$==', '$default_external', '$attr_accessor', '$singleton_class', '$attr_reader', '$raise', '$register', '$length', '$bytes', '$force_encoding', '$dup', '$bytesize', '$enum_for', '$each_byte', '$to_a', '$each_char', '$each_codepoint', '$coerce_to!', '$find', '$<', '$default_external=', '$-']);
+  Opal.add_stubs('require,+,[],clone,initialize,new,instance_eval,to_proc,each,const_set,tr,==,default_external,attr_accessor,singleton_class,attr_reader,raise,register,length,bytes,force_encoding,dup,bytesize,enum_for,each_byte,to_a,each_char,each_codepoint,coerce_to!,find,<,default_external=,-');
   
   self.$require("corelib/string");
-  (function($base, $super, $parent_nesting) {
+  (function($base, $super) {
     var self = $klass($base, $super, 'Encoding');
 
-    var $nesting = [self].concat($parent_nesting), $Encoding_register$1, $Encoding_find$3, $Encoding_initialize$4, $Encoding_ascii_compatible$ques$5, $Encoding_dummy$ques$6, $Encoding_binary$ques$7, $Encoding_to_s$8, $Encoding_inspect$9, $Encoding_charsize$10, $Encoding_each_char$11, $Encoding_each_byte$12, $Encoding_bytesize$13;
+    var $proto = self.$$prototype;
 
-    self.$$prototype.ascii = self.$$prototype.dummy = self.$$prototype.name = nil;
+    $proto.ascii = $proto.dummy = $proto.name = nil;
     
-    Opal.defs(self, '$register', $Encoding_register$1 = function $$register(name, options) {
-      var $iter = $Encoding_register$1.$$p, block = $iter || nil, $$2, self = this, names = nil, $ret_or_1 = nil, ascii = nil, $ret_or_2 = nil, dummy = nil, $ret_or_3 = nil, encoding = nil, register = nil;
+    $defs(self, '$register', function $$register(name, options) {
+      var block = $$register.$$p || nil, self = this, names = nil, $ret_or_1 = nil, ascii = nil, dummy = nil, encoding = nil, register = nil;
 
-      if ($iter) $Encoding_register$1.$$p = null;
+      delete $$register.$$p;
       
+      ;
       
-      if ($iter) $Encoding_register$1.$$p = null;;
-      
-      if (options == null) {
-        options = $hash2([], {});
-      };
-      names = $rb_plus([name], (function() {if ($truthy(($ret_or_1 = options['$[]']("aliases")))) {
-        return $ret_or_1
-      } else {
-        return []
-      }; return nil; })());
-      ascii = (function() {if ($truthy(($ret_or_2 = options['$[]']("ascii")))) {
-        return $ret_or_2
-      } else {
-        return false
-      }; return nil; })();
-      dummy = (function() {if ($truthy(($ret_or_3 = options['$[]']("dummy")))) {
-        return $ret_or_3
-      } else {
-        return false
-      }; return nil; })();
+      if (options == null) options = $hash2([], {});;
+      names = $rb_plus([name], ($truthy(($ret_or_1 = options['$[]']("aliases"))) ? ($ret_or_1) : ([])));
+      ascii = ($truthy(($ret_or_1 = options['$[]']("ascii"))) && ($ret_or_1));
+      dummy = ($truthy(($ret_or_1 = options['$[]']("dummy"))) && ($ret_or_1));
       if ($truthy(options['$[]']("inherits"))) {
         
         encoding = options['$[]']("inherits").$clone();
@@ -20331,30 +20379,30 @@ Opal.modules["corelib/string/encoding"] = function(Opal) {
         encoding = self.$new(name, names, ascii, dummy)
       };
       if ((block !== nil)) {
-        $send(encoding, 'instance_eval', [], block.$to_proc())};
+        $send(encoding, 'instance_eval', [], block.$to_proc())
+      };
       register = Opal.encodings;
-      return $send(names, 'each', [], ($$2 = function(encoding_name){var self = $$2.$$s == null ? this : $$2.$$s;
+      return $send(names, 'each', [], function $$1(encoding_name){var self = $$1.$$s == null ? this : $$1.$$s;
 
         
         
-        if (encoding_name == null) {
-          encoding_name = nil;
-        };
+        if (encoding_name == null) encoding_name = nil;;
         self.$const_set(encoding_name.$tr("-", "_"), encoding);
-        return register[encoding_name] = encoding;}, $$2.$$s = self, $$2.$$arity = 1, $$2));
-    }, $Encoding_register$1.$$arity = -2);
-    Opal.defs(self, '$find', $Encoding_find$3 = function $$find(name) {
+        return register[encoding_name] = encoding;}, {$$arity: 1, $$s: self});
+    }, -2);
+    $defs(self, '$find', function $$find(name) {
       var self = this;
 
       
-      if (name['$==']("default_external")) {
-        return self.$default_external()};
+      if ($eqeq(name, "default_external")) {
+        return self.$default_external()
+      };
       return Opal.find_encoding(name);;
-    }, $Encoding_find$3.$$arity = 1);
+    }, 1);
     self.$singleton_class().$attr_accessor("default_external");
     self.$attr_reader("name", "names");
     
-    Opal.def(self, '$initialize', $Encoding_initialize$4 = function $$initialize(name, names, ascii, dummy) {
+    $def(self, '$initialize', function $$initialize(name, names, ascii, dummy) {
       var self = this;
 
       
@@ -20362,45 +20410,39 @@ Opal.modules["corelib/string/encoding"] = function(Opal) {
       self.names = names;
       self.ascii = ascii;
       return (self.dummy = dummy);
-    }, $Encoding_initialize$4.$$arity = 4);
+    }, 4);
     
-    Opal.def(self, '$ascii_compatible?', $Encoding_ascii_compatible$ques$5 = function() {
+    $def(self, '$ascii_compatible?', function $Encoding_ascii_compatible$ques$2() {
       var self = this;
 
       return self.ascii
-    }, $Encoding_ascii_compatible$ques$5.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$dummy?', $Encoding_dummy$ques$6 = function() {
+    $def(self, '$dummy?', function $Encoding_dummy$ques$3() {
       var self = this;
 
       return self.dummy
-    }, $Encoding_dummy$ques$6.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$binary?', $Encoding_binary$ques$7 = function() {
-      var self = this;
-
+    $def(self, '$binary?', function $Encoding_binary$ques$4() {
+      
       return false
-    }, $Encoding_binary$ques$7.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_s', $Encoding_to_s$8 = function $$to_s() {
+    $def(self, '$to_s', function $$to_s() {
       var self = this;
 
       return self.name
-    }, $Encoding_to_s$8.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$inspect', $Encoding_inspect$9 = function $$inspect() {
+    $def(self, '$inspect', function $$inspect() {
       var self = this;
 
-      return "" + "#<Encoding:" + (self.name) + ((function() {if ($truthy(self.dummy)) {
-        return " (dummy)"
-      } else {
-        return nil
-      }; return nil; })()) + ">"
-    }, $Encoding_inspect$9.$$arity = 0);
+      return "#<Encoding:" + (self.name) + (($truthy(self.dummy) ? (" (dummy)") : nil)) + ">"
+    }, 0);
     
-    Opal.def(self, '$charsize', $Encoding_charsize$10 = function $$charsize(string) {
-      var self = this;
-
+    $def(self, '$charsize', function $$charsize(string) {
+      
       
       var len = 0;
       for (var i = 0, length = string.length; i < length; i++) {
@@ -20411,15 +20453,14 @@ Opal.modules["corelib/string/encoding"] = function(Opal) {
       }
       return len;
     
-    }, $Encoding_charsize$10.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$each_char', $Encoding_each_char$11 = function $$each_char(string) {
-      var $iter = $Encoding_each_char$11.$$p, block = $iter || nil, self = this;
+    $def(self, '$each_char', function $$each_char(string) {
+      var block = $$each_char.$$p || nil;
 
-      if ($iter) $Encoding_each_char$11.$$p = null;
-      
+      delete $$each_char.$$p;
       
-      if ($iter) $Encoding_each_char$11.$$p = null;;
+      ;
       
       var low_surrogate = "";
       for (var i = 0, length = string.length; i < length; i++) {
@@ -20439,53 +20480,42 @@ Opal.modules["corelib/string/encoding"] = function(Opal) {
         Opal.yield1(block, chr);
       }
     ;
-    }, $Encoding_each_char$11.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$each_byte', $Encoding_each_byte$12 = function $$each_byte($a) {
-      var $post_args, self = this;
+    $def(self, '$each_byte', function $$each_byte($a) {
+      var $post_args, $rest_arg;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
-      ;
-      return self.$raise($$($nesting, 'NotImplementedError'));
-    }, $Encoding_each_byte$12.$$arity = -1);
+      $post_args = Opal.slice.call(arguments);
+      
+      $rest_arg = $post_args;;
+      return $Kernel.$raise($$$('NotImplementedError'));
+    }, -1);
     
-    Opal.def(self, '$bytesize', $Encoding_bytesize$13 = function $$bytesize($a) {
-      var $post_args, self = this;
+    $def(self, '$bytesize', function $$bytesize($a) {
+      var $post_args, $rest_arg;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
-      ;
-      return self.$raise($$($nesting, 'NotImplementedError'));
-    }, $Encoding_bytesize$13.$$arity = -1);
-    (function($base, $super, $parent_nesting) {
-      var self = $klass($base, $super, 'EncodingError');
-
-      var $nesting = [self].concat($parent_nesting);
-
-      return nil
-    })($nesting[0], $$($nesting, 'StandardError'), $nesting);
-    return (function($base, $super, $parent_nesting) {
-      var self = $klass($base, $super, 'CompatibilityError');
-
-      var $nesting = [self].concat($parent_nesting);
-
-      return nil
-    })($nesting[0], $$($nesting, 'EncodingError'), $nesting);
-  })($nesting[0], null, $nesting);
-  $send($$($nesting, 'Encoding'), 'register', ["UTF-8", $hash2(["aliases", "ascii"], {"aliases": ["CP65001"], "ascii": true})], ($$14 = function(){var self = $$14.$$s == null ? this : $$14.$$s, $each_byte$15, $bytesize$16;
+      $post_args = Opal.slice.call(arguments);
+      
+      $rest_arg = $post_args;;
+      return $Kernel.$raise($$$('NotImplementedError'));
+    }, -1);
+    $klass('::', $$$('StandardError'), 'EncodingError');
+    return ($klass('::', $$$('EncodingError'), 'CompatibilityError'), nil);
+  })('::', null);
+  $send($$$('Encoding'), 'register', ["UTF-8", $hash2(["aliases", "ascii"], {"aliases": ["CP65001"], "ascii": true})], function $$5(){var self = $$5.$$s == null ? this : $$5.$$s;
 
     
     
-    Opal.def(self, '$each_byte', $each_byte$15 = function $$each_byte(string) {
-      var $iter = $each_byte$15.$$p, block = $iter || nil, self = this;
+    $def(self, '$each_byte', function $$each_byte(string) {
+      var block = $$each_byte.$$p || nil;
 
-      if ($iter) $each_byte$15.$$p = null;
-      
+      delete $$each_byte.$$p;
       
-      if ($iter) $each_byte$15.$$p = null;;
+      ;
       
       // Taken from: https://github.com/feross/buffer/blob/f52dffd9df0445b93c0c9065c2f8f0f46b2c729a/index.js#L1954-L2032
       var units = Infinity;
@@ -20573,23 +20603,21 @@ Opal.modules["corelib/string/encoding"] = function(Opal) {
         }
       }
     ;
-    }, $each_byte$15.$$arity = 1);
-    return (Opal.def(self, '$bytesize', $bytesize$16 = function $$bytesize(string) {
-      var self = this;
-
+    }, 1);
+    return $def(self, '$bytesize', function $$bytesize(string) {
+      
       return string.$bytes().$length()
-    }, $bytesize$16.$$arity = 1), nil) && 'bytesize';}, $$14.$$s = self, $$14.$$arity = 0, $$14));
-  $send($$($nesting, 'Encoding'), 'register', ["UTF-16LE"], ($$17 = function(){var self = $$17.$$s == null ? this : $$17.$$s, $each_byte$18, $bytesize$19;
+    }, 1);}, {$$arity: 0, $$s: self});
+  $send($$$('Encoding'), 'register', ["UTF-16LE"], function $$6(){var self = $$6.$$s == null ? this : $$6.$$s;
 
     
     
-    Opal.def(self, '$each_byte', $each_byte$18 = function $$each_byte(string) {
-      var $iter = $each_byte$18.$$p, block = $iter || nil, self = this;
+    $def(self, '$each_byte', function $$each_byte(string) {
+      var block = $$each_byte.$$p || nil;
 
-      if ($iter) $each_byte$18.$$p = null;
+      delete $$each_byte.$$p;
       
-      
-      if ($iter) $each_byte$18.$$p = null;;
+      ;
       
       for (var i = 0, length = string.length; i < length; i++) {
         var code = string.charCodeAt(i);
@@ -20598,21 +20626,19 @@ Opal.modules["corelib/string/encoding"] = function(Opal) {
         Opal.yield1(block, code >> 8);
       }
     ;
-    }, $each_byte$18.$$arity = 1);
-    return (Opal.def(self, '$bytesize', $bytesize$19 = function $$bytesize(string) {
-      var self = this;
-
+    }, 1);
+    return $def(self, '$bytesize', function $$bytesize(string) {
+      
       return string.length * 2;
-    }, $bytesize$19.$$arity = 1), nil) && 'bytesize';}, $$17.$$s = self, $$17.$$arity = 0, $$17));
-  $send($$($nesting, 'Encoding'), 'register', ["UTF-16BE", $hash2(["inherits"], {"inherits": $$$($$($nesting, 'Encoding'), 'UTF_16LE')})], ($$20 = function(){var self = $$20.$$s == null ? this : $$20.$$s, $each_byte$21;
+    }, 1);}, {$$arity: 0, $$s: self});
+  $send($$$('Encoding'), 'register', ["UTF-16BE", $hash2(["inherits"], {"inherits": $$$($$$('Encoding'), 'UTF_16LE')})], function $$7(){var self = $$7.$$s == null ? this : $$7.$$s;
 
-    return (Opal.def(self, '$each_byte', $each_byte$21 = function $$each_byte(string) {
-      var $iter = $each_byte$21.$$p, block = $iter || nil, self = this;
+    return $def(self, '$each_byte', function $$each_byte(string) {
+      var block = $$each_byte.$$p || nil;
 
-      if ($iter) $each_byte$21.$$p = null;
-      
+      delete $$each_byte.$$p;
       
-      if ($iter) $each_byte$21.$$p = null;;
+      ;
       
       for (var i = 0, length = string.length; i < length; i++) {
         var code = string.charCodeAt(i);
@@ -20621,18 +20647,17 @@ Opal.modules["corelib/string/encoding"] = function(Opal) {
         Opal.yield1(block, code & 0xff);
       }
     ;
-    }, $each_byte$21.$$arity = 1), nil) && 'each_byte'}, $$20.$$s = self, $$20.$$arity = 0, $$20));
-  $send($$($nesting, 'Encoding'), 'register', ["UTF-32LE"], ($$22 = function(){var self = $$22.$$s == null ? this : $$22.$$s, $each_byte$23, $bytesize$24;
+    }, 1)}, {$$arity: 0, $$s: self});
+  $send($$$('Encoding'), 'register', ["UTF-32LE"], function $$8(){var self = $$8.$$s == null ? this : $$8.$$s;
 
     
     
-    Opal.def(self, '$each_byte', $each_byte$23 = function $$each_byte(string) {
-      var $iter = $each_byte$23.$$p, block = $iter || nil, self = this;
+    $def(self, '$each_byte', function $$each_byte(string) {
+      var block = $$each_byte.$$p || nil;
 
-      if ($iter) $each_byte$23.$$p = null;
-      
+      delete $$each_byte.$$p;
       
-      if ($iter) $each_byte$23.$$p = null;;
+      ;
       
       for (var i = 0, length = string.length; i < length; i++) {
         var code = string.charCodeAt(i);
@@ -20643,21 +20668,19 @@ Opal.modules["corelib/string/encoding"] = function(Opal) {
         Opal.yield1(block, 0);
       }
     ;
-    }, $each_byte$23.$$arity = 1);
-    return (Opal.def(self, '$bytesize', $bytesize$24 = function $$bytesize(string) {
-      var self = this;
-
+    }, 1);
+    return $def(self, '$bytesize', function $$bytesize(string) {
+      
       return string.length * 4;
-    }, $bytesize$24.$$arity = 1), nil) && 'bytesize';}, $$22.$$s = self, $$22.$$arity = 0, $$22));
-  $send($$($nesting, 'Encoding'), 'register', ["UTF-32BE", $hash2(["inherits"], {"inherits": $$$($$($nesting, 'Encoding'), 'UTF_32LE')})], ($$25 = function(){var self = $$25.$$s == null ? this : $$25.$$s, $each_byte$26;
+    }, 1);}, {$$arity: 0, $$s: self});
+  $send($$$('Encoding'), 'register', ["UTF-32BE", $hash2(["inherits"], {"inherits": $$$($$$('Encoding'), 'UTF_32LE')})], function $$9(){var self = $$9.$$s == null ? this : $$9.$$s;
 
-    return (Opal.def(self, '$each_byte', $each_byte$26 = function $$each_byte(string) {
-      var $iter = $each_byte$26.$$p, block = $iter || nil, self = this;
+    return $def(self, '$each_byte', function $$each_byte(string) {
+      var block = $$each_byte.$$p || nil;
 
-      if ($iter) $each_byte$26.$$p = null;
+      delete $$each_byte.$$p;
       
-      
-      if ($iter) $each_byte$26.$$p = null;;
+      ;
       
       for (var i = 0, length = string.length; i < length; i++) {
         var code = string.charCodeAt(i);
@@ -20668,18 +20691,17 @@ Opal.modules["corelib/string/encoding"] = function(Opal) {
         Opal.yield1(block, code & 0xff);
       }
     ;
-    }, $each_byte$26.$$arity = 1), nil) && 'each_byte'}, $$25.$$s = self, $$25.$$arity = 0, $$25));
-  $send($$($nesting, 'Encoding'), 'register', ["ASCII-8BIT", $hash2(["aliases", "ascii"], {"aliases": ["BINARY"], "ascii": true})], ($$27 = function(){var self = $$27.$$s == null ? this : $$27.$$s, $each_char$28, $charsize$29, $each_byte$30, $bytesize$31, $binary$ques$32;
+    }, 1)}, {$$arity: 0, $$s: self});
+  $send($$$('Encoding'), 'register', ["ASCII-8BIT", $hash2(["aliases", "ascii"], {"aliases": ["BINARY"], "ascii": true})], function $$10(){var self = $$10.$$s == null ? this : $$10.$$s;
 
     
     
-    Opal.def(self, '$each_char', $each_char$28 = function $$each_char(string) {
-      var $iter = $each_char$28.$$p, block = $iter || nil, self = this;
+    $def(self, '$each_char', function $$each_char(string) {
+      var block = $$each_char.$$p || nil;
 
-      if ($iter) $each_char$28.$$p = null;
+      delete $$each_char.$$p;
       
-      
-      if ($iter) $each_char$28.$$p = null;;
+      ;
       
       for (var i = 0, length = string.length; i < length; i++) {
         var chr = new String(string.charAt(i));
@@ -20687,85 +20709,79 @@ Opal.modules["corelib/string/encoding"] = function(Opal) {
         Opal.yield1(block, chr);
       }
     ;
-    }, $each_char$28.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$charsize', $charsize$29 = function $$charsize(string) {
-      var self = this;
-
+    $def(self, '$charsize', function $$charsize(string) {
+      
       return string.length;
-    }, $charsize$29.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$each_byte', $each_byte$30 = function $$each_byte(string) {
-      var $iter = $each_byte$30.$$p, block = $iter || nil, self = this;
+    $def(self, '$each_byte', function $$each_byte(string) {
+      var block = $$each_byte.$$p || nil;
 
-      if ($iter) $each_byte$30.$$p = null;
-      
+      delete $$each_byte.$$p;
       
-      if ($iter) $each_byte$30.$$p = null;;
+      ;
       
       for (var i = 0, length = string.length; i < length; i++) {
         var code = string.charCodeAt(i);
         Opal.yield1(block, code & 0xff);
       }
     ;
-    }, $each_byte$30.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$bytesize', $bytesize$31 = function $$bytesize(string) {
-      var self = this;
-
+    $def(self, '$bytesize', function $$bytesize(string) {
+      
       return string.length;
-    }, $bytesize$31.$$arity = 1);
-    return (Opal.def(self, '$binary?', $binary$ques$32 = function() {
-      var self = this;
-
+    }, 1);
+    return $def(self, '$binary?', function $binary$ques$11() {
+      
       return true
-    }, $binary$ques$32.$$arity = 0), nil) && 'binary?';}, $$27.$$s = self, $$27.$$arity = 0, $$27));
-  $$($nesting, 'Encoding').$register("ISO-8859-1", $hash2(["aliases", "ascii", "inherits"], {"aliases": ["ISO8859-1"], "ascii": true, "inherits": $$$($$($nesting, 'Encoding'), 'ASCII_8BIT')}));
-  $$($nesting, 'Encoding').$register("US-ASCII", $hash2(["aliases", "ascii", "inherits"], {"aliases": ["ASCII"], "ascii": true, "inherits": $$$($$($nesting, 'Encoding'), 'ASCII_8BIT')}));
-  (function($base, $super, $parent_nesting) {
+    }, 0);}, {$$arity: 0, $$s: self});
+  $$$('Encoding').$register("ISO-8859-1", $hash2(["aliases", "ascii", "inherits"], {"aliases": ["ISO8859-1"], "ascii": true, "inherits": $$$($$$('Encoding'), 'ASCII_8BIT')}));
+  $$$('Encoding').$register("US-ASCII", $hash2(["aliases", "ascii", "inherits"], {"aliases": ["ASCII"], "ascii": true, "inherits": $$$($$$('Encoding'), 'ASCII_8BIT')}));
+  (function($base, $super) {
     var self = $klass($base, $super, 'String');
 
-    var $nesting = [self].concat($parent_nesting), $String_b$33, $String_bytesize$34, $String_each_byte$35, $String_bytes$37, $String_each_char$38, $String_chars$40, $String_each_codepoint$41, $String_codepoints$42, $String_encode$43, $String_force_encoding$44, $String_getbyte$45, $String_initialize_copy$46, $String_length$47, $String_valid_encoding$ques$48;
+    var $proto = self.$$prototype;
 
-    self.$$prototype.internal_encoding = self.$$prototype.bytes = self.$$prototype.encoding = nil;
+    $proto.internal_encoding = $proto.bytes = $proto.encoding = nil;
     
     self.$attr_reader("encoding");
     self.$attr_reader("internal_encoding");
-    Opal.defineProperty(String.prototype, 'bytes', nil);
-    Opal.defineProperty(String.prototype, 'encoding', $$$($$($nesting, 'Encoding'), 'UTF_8'));
-    Opal.defineProperty(String.prototype, 'internal_encoding', $$$($$($nesting, 'Encoding'), 'UTF_8'));
+    Opal.prop(String.prototype, 'bytes', nil);
+    Opal.prop(String.prototype, 'encoding', $$$($$$('Encoding'), 'UTF_8'));
+    Opal.prop(String.prototype, 'internal_encoding', $$$($$$('Encoding'), 'UTF_8'));
     
-    Opal.def(self, '$b', $String_b$33 = function $$b() {
+    $def(self, '$b', function $$b() {
       var self = this;
 
       return self.$dup().$force_encoding("binary")
-    }, $String_b$33.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$bytesize', $String_bytesize$34 = function $$bytesize() {
+    $def(self, '$bytesize', function $$bytesize() {
       var self = this;
 
       return self.internal_encoding.$bytesize(self)
-    }, $String_bytesize$34.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$each_byte', $String_each_byte$35 = function $$each_byte() {
-      var $iter = $String_each_byte$35.$$p, block = $iter || nil, $$36, self = this;
+    $def(self, '$each_byte', function $$each_byte() {
+      var block = $$each_byte.$$p || nil, self = this;
 
-      if ($iter) $String_each_byte$35.$$p = null;
+      delete $$each_byte.$$p;
       
-      
-      if ($iter) $String_each_byte$35.$$p = null;;
-      if ((block !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["each_byte"], ($$36 = function(){var self = $$36.$$s == null ? this : $$36.$$s;
+      ;
+      if (!(block !== nil)) {
+        return $send(self, 'enum_for', ["each_byte"], function $$12(){var self = $$12.$$s == null ? this : $$12.$$s;
 
-          return self.$bytesize()}, $$36.$$s = self, $$36.$$arity = 0, $$36))
+          return self.$bytesize()}, {$$arity: 0, $$s: self})
       };
       $send(self.internal_encoding, 'each_byte', [self], block.$to_proc());
       return self;
-    }, $String_each_byte$35.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$bytes', $String_bytes$37 = function $$bytes() {
-      var self = this, $ret_or_4 = nil;
+    $def(self, '$bytes', function $$bytes() {
+      var self = this, $ret_or_1 = nil;
 
       
       
@@ -20773,54 +20789,44 @@ Opal.modules["corelib/string/encoding"] = function(Opal) {
         return (new String(self)).$each_byte().$to_a();
       }
     ;
-      self.bytes = (function() {if ($truthy(($ret_or_4 = self.bytes))) {
-        return $ret_or_4
-      } else {
-        return self.$each_byte().$to_a()
-      }; return nil; })();
+      self.bytes = ($truthy(($ret_or_1 = self.bytes)) ? ($ret_or_1) : (self.$each_byte().$to_a()));
       return self.bytes.$dup();
-    }, $String_bytes$37.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$each_char', $String_each_char$38 = function $$each_char() {
-      var $iter = $String_each_char$38.$$p, block = $iter || nil, $$39, self = this;
+    $def(self, '$each_char', function $$each_char() {
+      var block = $$each_char.$$p || nil, self = this;
 
-      if ($iter) $String_each_char$38.$$p = null;
+      delete $$each_char.$$p;
       
-      
-      if ($iter) $String_each_char$38.$$p = null;;
-      if ((block !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["each_char"], ($$39 = function(){var self = $$39.$$s == null ? this : $$39.$$s;
+      ;
+      if (!(block !== nil)) {
+        return $send(self, 'enum_for', ["each_char"], function $$13(){var self = $$13.$$s == null ? this : $$13.$$s;
 
-          return self.$length()}, $$39.$$s = self, $$39.$$arity = 0, $$39))
+          return self.$length()}, {$$arity: 0, $$s: self})
       };
       $send(self.encoding, 'each_char', [self], block.$to_proc());
       return self;
-    }, $String_each_char$38.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$chars', $String_chars$40 = function $$chars() {
-      var $iter = $String_chars$40.$$p, block = $iter || nil, self = this;
+    $def(self, '$chars', function $$chars() {
+      var block = $$chars.$$p || nil, self = this;
 
-      if ($iter) $String_chars$40.$$p = null;
+      delete $$chars.$$p;
       
-      
-      if ($iter) $String_chars$40.$$p = null;;
-      if ($truthy(block)) {
-      } else {
+      ;
+      if (!$truthy(block)) {
         return self.$each_char().$to_a()
       };
       return $send(self, 'each_char', [], block.$to_proc());
-    }, $String_chars$40.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$each_codepoint', $String_each_codepoint$41 = function $$each_codepoint() {
-      var $iter = $String_each_codepoint$41.$$p, block = $iter || nil, self = this;
+    $def(self, '$each_codepoint', function $$each_codepoint() {
+      var block = $$each_codepoint.$$p || nil, self = this;
 
-      if ($iter) $String_each_codepoint$41.$$p = null;
+      delete $$each_codepoint.$$p;
       
-      
-      if ($iter) $String_each_codepoint$41.$$p = null;;
-      if ((block !== nil)) {
-      } else {
+      ;
+      if (!(block !== nil)) {
         return self.$enum_for("each_codepoint")
       };
       
@@ -20829,27 +20835,27 @@ Opal.modules["corelib/string/encoding"] = function(Opal) {
       }
     ;
       return self;
-    }, $String_each_codepoint$41.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$codepoints', $String_codepoints$42 = function $$codepoints() {
-      var $iter = $String_codepoints$42.$$p, block = $iter || nil, self = this;
+    $def(self, '$codepoints', function $$codepoints() {
+      var block = $$codepoints.$$p || nil, self = this;
 
-      if ($iter) $String_codepoints$42.$$p = null;
+      delete $$codepoints.$$p;
       
-      
-      if ($iter) $String_codepoints$42.$$p = null;;
+      ;
       if ((block !== nil)) {
-        return $send(self, 'each_codepoint', [], block.$to_proc())};
+        return $send(self, 'each_codepoint', [], block.$to_proc())
+      };
       return self.$each_codepoint().$to_a();
-    }, $String_codepoints$42.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$encode', $String_encode$43 = function $$encode(encoding) {
+    $def(self, '$encode', function $$encode(encoding) {
       var self = this;
 
       return Opal.enc(self, encoding);
-    }, $String_encode$43.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$force_encoding', $String_force_encoding$44 = function $$force_encoding(encoding) {
+    $def(self, '$force_encoding', function $$force_encoding(encoding) {
       var self = this;
 
       
@@ -20857,8 +20863,8 @@ Opal.modules["corelib/string/encoding"] = function(Opal) {
 
       if (encoding === str.encoding) { return str; }
 
-      encoding = $$($nesting, 'Opal')['$coerce_to!'](encoding, $$($nesting, 'String'), "to_s");
-      encoding = $$($nesting, 'Encoding').$find(encoding);
+      encoding = $Opal['$coerce_to!'](encoding, $$$('String'), "to_s");
+      encoding = $$$('Encoding').$find(encoding);
 
       if (encoding === str.encoding) { return str; }
 
@@ -20866,69 +20872,61 @@ Opal.modules["corelib/string/encoding"] = function(Opal) {
 
       return str;
     
-    }, $String_force_encoding$44.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$getbyte', $String_getbyte$45 = function $$getbyte(idx) {
+    $def(self, '$getbyte', function $$getbyte(idx) {
       var self = this, string_bytes = nil;
 
       
       string_bytes = self.$bytes();
-      idx = $$($nesting, 'Opal')['$coerce_to!'](idx, $$($nesting, 'Integer'), "to_int");
+      idx = $Opal['$coerce_to!'](idx, $$$('Integer'), "to_int");
       if ($truthy($rb_lt(string_bytes.$length(), idx))) {
-        return nil};
+        return nil
+      };
       return string_bytes['$[]'](idx);
-    }, $String_getbyte$45.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$initialize_copy', $String_initialize_copy$46 = function $$initialize_copy(other) {
-      var self = this;
-
-      return "" + "\n" + "      self.encoding = other.encoding;\n" + "      self.internal_encoding = other.internal_encoding;\n" + "    "
-    }, $String_initialize_copy$46.$$arity = 1);
+    $def(self, '$initialize_copy', function $$initialize_copy(other) {
+      
+      return "\n" + "      self.encoding = other.encoding;\n" + "      self.internal_encoding = other.internal_encoding;\n" + "    "
+    }, 1);
     
-    Opal.def(self, '$length', $String_length$47 = function $$length() {
+    $def(self, '$length', function $$length() {
       var self = this;
 
       return self.length;
-    }, $String_length$47.$$arity = 0);
+    }, 0);
     $alias(self, "size", "length");
-    return (Opal.def(self, '$valid_encoding?', $String_valid_encoding$ques$48 = function() {
-      var self = this;
-
+    return $def(self, '$valid_encoding?', function $String_valid_encoding$ques$14() {
+      
       return true
-    }, $String_valid_encoding$ques$48.$$arity = 0), nil) && 'valid_encoding?';
-  })($nesting[0], null, $nesting);
+    }, 0);
+  })('::', null);
   
-  $writer = [$$$($$($nesting, 'Encoding'), 'UTF_8')];
-  $send($$($nesting, 'Encoding'), 'default_external=', Opal.to_a($writer));
+  $writer = [$$$($$('Encoding'), 'UTF_8')];
+  $send($$$('Encoding'), 'default_external=', $to_a($writer));
   return $writer[$rb_minus($writer["length"], 1)];;
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/math"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_divide(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs / rhs : lhs['$/'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $type_error = Opal.type_error, $module = Opal.module, $truthy = Opal.truthy;
+Opal.modules["corelib/math"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $type_error = Opal.type_error, $module = Opal.module, $const_set = Opal.const_set, $Class = Opal.Class, $Kernel = Opal.Kernel, $defs = Opal.defs, $truthy = Opal.truthy, $send = Opal.send, $def = Opal.def, $rb_minus = Opal.rb_minus, $eqeqeq = Opal.eqeqeq, $rb_divide = Opal.rb_divide;
 
-  Opal.add_stubs(['$new', '$raise', '$Float', '$Integer', '$module_function', '$checked', '$float!', '$===', '$gamma', '$-', '$integer!', '$/', '$infinite?']);
+  Opal.add_stubs('new,raise,Float,Integer,module_function,each,define_method,checked,float!,===,gamma,-,integer!,/,infinite?');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Math');
 
-    var $nesting = [self].concat($parent_nesting), $Math_checked$1, $Math_float$excl$2, $Math_integer$excl$3, $Math_acos$4, $Math_acosh$5, $Math_asin$6, $Math_asinh$7, $Math_atan$8, $Math_atan2$9, $Math_atanh$10, $Math_cbrt$11, $Math_cos$12, $Math_cosh$13, $Math_erf$14, $Math_erfc$15, $Math_exp$16, $Math_frexp$17, $Math_gamma$18, $Math_hypot$19, $Math_ldexp$20, $Math_lgamma$21, $Math_log$22, $Math_log10$23, $Math_log2$24, $Math_sin$25, $Math_sinh$26, $Math_sqrt$27, $Math_tan$28, $Math_tanh$29;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
-    Opal.const_set($nesting[0], 'E', Math.E);
-    Opal.const_set($nesting[0], 'PI', Math.PI);
-    Opal.const_set($nesting[0], 'DomainError', $$($nesting, 'Class').$new($$($nesting, 'StandardError')));
-    Opal.defs(self, '$checked', $Math_checked$1 = function $$checked(method, $a) {
-      var $post_args, args, self = this;
+    $const_set(self, 'E', Math.E);
+    $const_set(self, 'PI', Math.PI);
+    $const_set(self, 'DomainError', $Class.$new($$$('StandardError')));
+    $defs(self, '$checked', function $$checked(method, $a) {
+      var $post_args, args;
 
       
       
-      $post_args = Opal.slice.call(arguments, 1, arguments.length);
+      $post_args = Opal.slice.call(arguments, 1);
       
       args = $post_args;;
       
@@ -20939,181 +20937,40 @@ Opal.modules["corelib/math"] = function(Opal) {
       var result = Math[method].apply(null, args);
 
       if (isNaN(result)) {
-        self.$raise($$($nesting, 'DomainError'), "" + "Numerical argument is out of domain - \"" + (method) + "\"");
+        $Kernel.$raise($$('DomainError'), "Numerical argument is out of domain - \"" + (method) + "\"");
       }
 
       return result;
     ;
-    }, $Math_checked$1.$$arity = -2);
-    Opal.defs(self, '$float!', $Math_float$excl$2 = function(value) {
-      var self = this;
-
+    }, -2);
+    $defs(self, '$float!', function $Math_float$excl$1(value) {
+      
       try {
-        return self.$Float(value)
+        return $Kernel.$Float(value)
       } catch ($err) {
-        if (Opal.rescue($err, [$$($nesting, 'ArgumentError')])) {
+        if (Opal.rescue($err, [$$$('ArgumentError')])) {
           try {
-            return self.$raise($type_error(value, $$($nesting, 'Float')))
+            return $Kernel.$raise($type_error(value, $$$('Float')))
           } finally { Opal.pop_exception(); }
         } else { throw $err; }
       }
-    }, $Math_float$excl$2.$$arity = 1);
-    Opal.defs(self, '$integer!', $Math_integer$excl$3 = function(value) {
-      var self = this;
-
+    }, 1);
+    $defs(self, '$integer!', function $Math_integer$excl$2(value) {
+      
       try {
-        return self.$Integer(value)
+        return $Kernel.$Integer(value)
       } catch ($err) {
-        if (Opal.rescue($err, [$$($nesting, 'ArgumentError')])) {
+        if (Opal.rescue($err, [$$$('ArgumentError')])) {
           try {
-            return self.$raise($type_error(value, $$($nesting, 'Integer')))
+            return $Kernel.$raise($type_error(value, $$$('Integer')))
           } finally { Opal.pop_exception(); }
         } else { throw $err; }
       }
-    }, $Math_integer$excl$3.$$arity = 1);
+    }, 1);
     self.$module_function();
-    
-    Opal.def(self, '$acos', $Math_acos$4 = function $$acos(x) {
-      var self = this;
-
-      return $$($nesting, 'Math').$checked("acos", $$($nesting, 'Math')['$float!'](x))
-    }, $Math_acos$4.$$arity = 1);
-    if ($truthy((typeof(Math.acosh) !== "undefined"))) {
-    } else {
-      
-      Math.acosh = function(x) {
-        return Math.log(x + Math.sqrt(x * x - 1));
-      }
-    
-    };
-    
-    Opal.def(self, '$acosh', $Math_acosh$5 = function $$acosh(x) {
-      var self = this;
-
-      return $$($nesting, 'Math').$checked("acosh", $$($nesting, 'Math')['$float!'](x))
-    }, $Math_acosh$5.$$arity = 1);
-    
-    Opal.def(self, '$asin', $Math_asin$6 = function $$asin(x) {
-      var self = this;
-
-      return $$($nesting, 'Math').$checked("asin", $$($nesting, 'Math')['$float!'](x))
-    }, $Math_asin$6.$$arity = 1);
-    if ($truthy((typeof(Math.asinh) !== "undefined"))) {
-    } else {
-      
-      Math.asinh = function(x) {
-        return Math.log(x + Math.sqrt(x * x + 1))
-      }
-    
-    };
-    
-    Opal.def(self, '$asinh', $Math_asinh$7 = function $$asinh(x) {
-      var self = this;
-
-      return $$($nesting, 'Math').$checked("asinh", $$($nesting, 'Math')['$float!'](x))
-    }, $Math_asinh$7.$$arity = 1);
-    
-    Opal.def(self, '$atan', $Math_atan$8 = function $$atan(x) {
-      var self = this;
-
-      return $$($nesting, 'Math').$checked("atan", $$($nesting, 'Math')['$float!'](x))
-    }, $Math_atan$8.$$arity = 1);
-    
-    Opal.def(self, '$atan2', $Math_atan2$9 = function $$atan2(y, x) {
-      var self = this;
-
-      return $$($nesting, 'Math').$checked("atan2", $$($nesting, 'Math')['$float!'](y), $$($nesting, 'Math')['$float!'](x))
-    }, $Math_atan2$9.$$arity = 2);
-    if ($truthy((typeof(Math.atanh) !== "undefined"))) {
-    } else {
-      
-      Math.atanh = function(x) {
-        return 0.5 * Math.log((1 + x) / (1 - x));
-      }
-    
-    };
-    
-    Opal.def(self, '$atanh', $Math_atanh$10 = function $$atanh(x) {
-      var self = this;
-
-      return $$($nesting, 'Math').$checked("atanh", $$($nesting, 'Math')['$float!'](x))
-    }, $Math_atanh$10.$$arity = 1);
-    if ($truthy((typeof(Math.cbrt) !== "undefined"))) {
-    } else {
-      
-      Math.cbrt = function(x) {
-        if (x == 0) {
-          return 0;
-        }
-
-        if (x < 0) {
-          return -Math.cbrt(-x);
-        }
-
-        var r  = x,
-            ex = 0;
-
-        while (r < 0.125) {
-          r *= 8;
-          ex--;
-        }
-
-        while (r > 1.0) {
-          r *= 0.125;
-          ex++;
-        }
-
-        r = (-0.46946116 * r + 1.072302) * r + 0.3812513;
-
-        while (ex < 0) {
-          r *= 0.5;
-          ex++;
-        }
-
-        while (ex > 0) {
-          r *= 2;
-          ex--;
-        }
-
-        r = (2.0 / 3.0) * r + (1.0 / 3.0) * x / (r * r);
-        r = (2.0 / 3.0) * r + (1.0 / 3.0) * x / (r * r);
-        r = (2.0 / 3.0) * r + (1.0 / 3.0) * x / (r * r);
-        r = (2.0 / 3.0) * r + (1.0 / 3.0) * x / (r * r);
-
-        return r;
-      }
-    
-    };
-    
-    Opal.def(self, '$cbrt', $Math_cbrt$11 = function $$cbrt(x) {
-      var self = this;
-
-      return $$($nesting, 'Math').$checked("cbrt", $$($nesting, 'Math')['$float!'](x))
-    }, $Math_cbrt$11.$$arity = 1);
-    
-    Opal.def(self, '$cos', $Math_cos$12 = function $$cos(x) {
-      var self = this;
-
-      return $$($nesting, 'Math').$checked("cos", $$($nesting, 'Math')['$float!'](x))
-    }, $Math_cos$12.$$arity = 1);
-    if ($truthy((typeof(Math.cosh) !== "undefined"))) {
-    } else {
-      
-      Math.cosh = function(x) {
-        return (Math.exp(x) + Math.exp(-x)) / 2;
-      }
-    
-    };
-    
-    Opal.def(self, '$cosh', $Math_cosh$13 = function $$cosh(x) {
-      var self = this;
-
-      return $$($nesting, 'Math').$checked("cosh", $$($nesting, 'Math')['$float!'](x))
-    }, $Math_cosh$13.$$arity = 1);
-    if ($truthy((typeof(Math.erf) !== "undefined"))) {
-    } else {
+    if (!$truthy((typeof(Math.erf) !== "undefined"))) {
       
-      Opal.defineProperty(Math, 'erf', function(x) {
+      Opal.prop(Math, 'erf', function(x) {
         var A1 =  0.254829592,
             A2 = -0.284496736,
             A3 =  1.421413741,
@@ -21136,16 +20993,9 @@ Opal.modules["corelib/math"] = function(Opal) {
       });
     
     };
-    
-    Opal.def(self, '$erf', $Math_erf$14 = function $$erf(x) {
-      var self = this;
-
-      return $$($nesting, 'Math').$checked("erf", $$($nesting, 'Math')['$float!'](x))
-    }, $Math_erf$14.$$arity = 1);
-    if ($truthy((typeof(Math.erfc) !== "undefined"))) {
-    } else {
+    if (!$truthy((typeof(Math.erfc) !== "undefined"))) {
       
-      Opal.defineProperty(Math, 'erfc', function(x) {
+      Opal.prop(Math, 'erfc', function(x) {
         var z = Math.abs(x),
             t = 1.0 / (0.5 * z + 1.0);
 
@@ -21171,24 +21021,31 @@ Opal.modules["corelib/math"] = function(Opal) {
       });
     
     };
-    
-    Opal.def(self, '$erfc', $Math_erfc$15 = function $$erfc(x) {
-      var self = this;
+    $send(["acos", "acosh", "asin", "asinh", "atan", "atanh", "cbrt", "cos", "cosh", "erf", "erfc", "exp", "sin", "sinh", "sqrt", "tanh"], 'each', [], function $Math$3(method){var self = $Math$3.$$s == null ? this : $Math$3.$$s;
 
-      return $$($nesting, 'Math').$checked("erfc", $$($nesting, 'Math')['$float!'](x))
-    }, $Math_erfc$15.$$arity = 1);
+      
+      
+      if (method == null) method = nil;;
+      return $send(self, 'define_method', [method], function $$4(x){
+        
+        
+        if (x == null) x = nil;;
+        return $$$('Math').$checked(method, $$$('Math')['$float!'](x));}, 1);}, {$$arity: 1, $$s: self});
     
-    Opal.def(self, '$exp', $Math_exp$16 = function $$exp(x) {
-      var self = this;
-
-      return $$($nesting, 'Math').$checked("exp", $$($nesting, 'Math')['$float!'](x))
-    }, $Math_exp$16.$$arity = 1);
+    $def(self, '$atan2', function $$atan2(y, x) {
+      
+      return $$$('Math').$checked("atan2", $$$('Math')['$float!'](y), $$$('Math')['$float!'](x))
+    }, 2);
     
-    Opal.def(self, '$frexp', $Math_frexp$17 = function $$frexp(x) {
-      var self = this;
-
+    $def(self, '$hypot', function $$hypot(x, y) {
+      
+      return $$$('Math').$checked("hypot", $$$('Math')['$float!'](x), $$$('Math')['$float!'](y))
+    }, 2);
+    
+    $def(self, '$frexp', function $$frexp(x) {
+      
       
-      x = $$($nesting, 'Math')['$float!'](x);
+      x = $$('Math')['$float!'](x);
       
       if (isNaN(x)) {
         return [NaN, 0];
@@ -21199,13 +21056,12 @@ Opal.modules["corelib/math"] = function(Opal) {
 
       return [frac, ex];
     ;
-    }, $Math_frexp$17.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$gamma', $Math_gamma$18 = function $$gamma(n) {
-      var self = this;
-
+    $def(self, '$gamma', function $$gamma(n) {
       
-      n = $$($nesting, 'Math')['$float!'](n);
+      
+      n = $$('Math')['$float!'](n);
       
       var i, t, x, value, result, twoN, threeN, fourN, fiveN;
 
@@ -21239,10 +21095,10 @@ Opal.modules["corelib/math"] = function(Opal) {
       }
 
       if (n === -1 || n === -Infinity) {
-        self.$raise($$($nesting, 'DomainError'), "Numerical argument is out of domain - \"gamma\"");
+        $Kernel.$raise($$('DomainError'), "Numerical argument is out of domain - \"gamma\"");
       }
 
-      if ($$($nesting, 'Integer')['$==='](n)) {
+      if ($$('Integer')['$==='](n)) {
         if (n <= 0) {
           return isFinite(n) ? Infinity : NaN;
         }
@@ -21267,7 +21123,7 @@ Opal.modules["corelib/math"] = function(Opal) {
       }
 
       if (n < 0.5) {
-        return Math.PI / (Math.sin(Math.PI * n) * $$($nesting, 'Math').$gamma($rb_minus(1, n)));
+        return Math.PI / (Math.sin(Math.PI * n) * $$$('Math').$gamma($rb_minus(1, n)));
       }
 
       if (n >= 171.35) {
@@ -21297,698 +21153,470 @@ Opal.modules["corelib/math"] = function(Opal) {
 
       return Math.sqrt(2 * Math.PI) * Math.pow(t, n + 0.5) * Math.exp(-t) * x;
     ;
-    }, $Math_gamma$18.$$arity = 1);
-    if ($truthy((typeof(Math.hypot) !== "undefined"))) {
-    } else {
-      
-      Math.hypot = function(x, y) {
-        return Math.sqrt(x * x + y * y)
-      }
+    }, 1);
     
-    };
-    
-    Opal.def(self, '$hypot', $Math_hypot$19 = function $$hypot(x, y) {
-      var self = this;
-
-      return $$($nesting, 'Math').$checked("hypot", $$($nesting, 'Math')['$float!'](x), $$($nesting, 'Math')['$float!'](y))
-    }, $Math_hypot$19.$$arity = 2);
-    
-    Opal.def(self, '$ldexp', $Math_ldexp$20 = function $$ldexp(mantissa, exponent) {
-      var self = this;
-
+    $def(self, '$ldexp', function $$ldexp(mantissa, exponent) {
+      
       
-      mantissa = $$($nesting, 'Math')['$float!'](mantissa);
-      exponent = $$($nesting, 'Math')['$integer!'](exponent);
+      mantissa = $$('Math')['$float!'](mantissa);
+      exponent = $$('Math')['$integer!'](exponent);
       
       if (isNaN(exponent)) {
-        self.$raise($$($nesting, 'RangeError'), "float NaN out of range of integer");
+        $Kernel.$raise($$$('RangeError'), "float NaN out of range of integer");
       }
 
       return mantissa * Math.pow(2, exponent);
     ;
-    }, $Math_ldexp$20.$$arity = 2);
+    }, 2);
     
-    Opal.def(self, '$lgamma', $Math_lgamma$21 = function $$lgamma(n) {
-      var self = this;
-
+    $def(self, '$lgamma', function $$lgamma(n) {
+      
       
       if (n == -1) {
         return [Infinity, 1];
       }
       else {
-        return [Math.log(Math.abs($$($nesting, 'Math').$gamma(n))), $$($nesting, 'Math').$gamma(n) < 0 ? -1 : 1];
+        return [Math.log(Math.abs($$$('Math').$gamma(n))), $$$('Math').$gamma(n) < 0 ? -1 : 1];
       }
     
-    }, $Math_lgamma$21.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$log', $Math_log$22 = function $$log(x, base) {
-      var self = this;
-
+    $def(self, '$log', function $$log(x, base) {
+      
       
       ;
-      if ($truthy($$($nesting, 'String')['$==='](x))) {
-        self.$raise($type_error(x, $$($nesting, 'Float')))};
+      if ($eqeqeq($$$('String'), x)) {
+        $Kernel.$raise($type_error(x, $$$('Float')))
+      };
       if ($truthy(base == null)) {
-        return $$($nesting, 'Math').$checked("log", $$($nesting, 'Math')['$float!'](x))
+        return $$$('Math').$checked("log", $$$('Math')['$float!'](x))
       } else {
         
-        if ($truthy($$($nesting, 'String')['$==='](base))) {
-          self.$raise($type_error(base, $$($nesting, 'Float')))};
-        return $rb_divide($$($nesting, 'Math').$checked("log", $$($nesting, 'Math')['$float!'](x)), $$($nesting, 'Math').$checked("log", $$($nesting, 'Math')['$float!'](base)));
+        if ($eqeqeq($$$('String'), base)) {
+          $Kernel.$raise($type_error(base, $$$('Float')))
+        };
+        return $rb_divide($$$('Math').$checked("log", $$$('Math')['$float!'](x)), $$$('Math').$checked("log", $$$('Math')['$float!'](base)));
       };
-    }, $Math_log$22.$$arity = -2);
-    if ($truthy((typeof(Math.log10) !== "undefined"))) {
-    } else {
-      
-      Math.log10 = function(x) {
-        return Math.log(x) / Math.LN10;
-      }
-    
-    };
+    }, -2);
     
-    Opal.def(self, '$log10', $Math_log10$23 = function $$log10(x) {
-      var self = this;
-
+    $def(self, '$log10', function $$log10(x) {
       
-      if ($truthy($$($nesting, 'String')['$==='](x))) {
-        self.$raise($type_error(x, $$($nesting, 'Float')))};
-      return $$($nesting, 'Math').$checked("log10", $$($nesting, 'Math')['$float!'](x));
-    }, $Math_log10$23.$$arity = 1);
-    if ($truthy((typeof(Math.log2) !== "undefined"))) {
-    } else {
       
-      Math.log2 = function(x) {
-        return Math.log(x) / Math.LN2;
-      }
-    
-    };
+      if ($eqeqeq($$$('String'), x)) {
+        $Kernel.$raise($type_error(x, $$$('Float')))
+      };
+      return $$$('Math').$checked("log10", $$$('Math')['$float!'](x));
+    }, 1);
     
-    Opal.def(self, '$log2', $Math_log2$24 = function $$log2(x) {
-      var self = this;
-
+    $def(self, '$log2', function $$log2(x) {
       
-      if ($truthy($$($nesting, 'String')['$==='](x))) {
-        self.$raise($type_error(x, $$($nesting, 'Float')))};
-      return $$($nesting, 'Math').$checked("log2", $$($nesting, 'Math')['$float!'](x));
-    }, $Math_log2$24.$$arity = 1);
-    
-    Opal.def(self, '$sin', $Math_sin$25 = function $$sin(x) {
-      var self = this;
-
-      return $$($nesting, 'Math').$checked("sin", $$($nesting, 'Math')['$float!'](x))
-    }, $Math_sin$25.$$arity = 1);
-    if ($truthy((typeof(Math.sinh) !== "undefined"))) {
-    } else {
       
-      Math.sinh = function(x) {
-        return (Math.exp(x) - Math.exp(-x)) / 2;
-      }
-    
-    };
-    
-    Opal.def(self, '$sinh', $Math_sinh$26 = function $$sinh(x) {
-      var self = this;
+      if ($eqeqeq($$$('String'), x)) {
+        $Kernel.$raise($type_error(x, $$$('Float')))
+      };
+      return $$$('Math').$checked("log2", $$$('Math')['$float!'](x));
+    }, 1);
+    return $def(self, '$tan', function $$tan(x) {
+      
+      
+      x = $$$('Math')['$float!'](x);
+      if ($truthy(x['$infinite?']())) {
+        return $$$($$$('Float'), 'NAN')
+      };
+      return $$$('Math').$checked("tan", $$$('Math')['$float!'](x));
+    }, 1);
+  })('::', $nesting)
+};
 
-      return $$($nesting, 'Math').$checked("sinh", $$($nesting, 'Math')['$float!'](x))
-    }, $Math_sinh$26.$$arity = 1);
-    
-    Opal.def(self, '$sqrt', $Math_sqrt$27 = function $$sqrt(x) {
-      var self = this;
+Opal.modules["corelib/complex/base"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $truthy = Opal.truthy, $def = Opal.def, $klass = Opal.klass;
 
-      return $$($nesting, 'Math').$checked("sqrt", $$($nesting, 'Math')['$float!'](x))
-    }, $Math_sqrt$27.$$arity = 1);
-    
-    Opal.def(self, '$tan', $Math_tan$28 = function $$tan(x) {
-      var self = this;
+  Opal.add_stubs('new,from_string');
+  
+  (function($base, $parent_nesting) {
+    var self = $module($base, 'Kernel');
 
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+    return $def(self, '$Complex', function $$Complex(real, imag) {
       
-      x = $$($nesting, 'Math')['$float!'](x);
-      if ($truthy(x['$infinite?']())) {
-        return $$$($$($nesting, 'Float'), 'NAN')};
-      return $$($nesting, 'Math').$checked("tan", $$($nesting, 'Math')['$float!'](x));
-    }, $Math_tan$28.$$arity = 1);
-    if ($truthy((typeof(Math.tanh) !== "undefined"))) {
-    } else {
       
-      Math.tanh = function(x) {
-        if (x == Infinity) {
-          return 1;
-        }
-        else if (x == -Infinity) {
-          return -1;
-        }
-        else {
-          return (Math.exp(x) - Math.exp(-x)) / (Math.exp(x) + Math.exp(-x));
-        }
-      }
-    
-    };
-    return (Opal.def(self, '$tanh', $Math_tanh$29 = function $$tanh(x) {
+      
+      if (imag == null) imag = nil;;
+      if ($truthy(imag)) {
+        return $$('Complex').$new(real, imag)
+      } else {
+        return $$('Complex').$new(real, 0)
+      };
+    }, -2)
+  })('::', $nesting);
+  return (function($base, $super, $parent_nesting) {
+    var self = $klass($base, $super, 'String');
+
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+    return $def(self, '$to_c', function $$to_c() {
       var self = this;
 
-      return $$($nesting, 'Math').$checked("tanh", $$($nesting, 'Math')['$float!'](x))
-    }, $Math_tanh$29.$$arity = 1), nil) && 'tanh';
-  })($nesting[0], $nesting)
+      return $$('Complex').$from_string(self)
+    }, 0)
+  })('::', null, $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/complex"] = function(Opal) {
-  function $rb_times(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs * rhs : lhs['$*'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_divide(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs / rhs : lhs['$/'](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $truthy = Opal.truthy, $alias = Opal.alias, $module = Opal.module;
+Opal.modules["corelib/complex"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $truthy = Opal.truthy, $eqeqeq = Opal.eqeqeq, $Kernel = Opal.Kernel, $defs = Opal.defs, $rb_times = Opal.rb_times, $def = Opal.def, $rb_plus = Opal.rb_plus, $rb_minus = Opal.rb_minus, $rb_divide = Opal.rb_divide, $eqeq = Opal.eqeq, $to_ary = Opal.to_ary, $rb_gt = Opal.rb_gt, $neqeq = Opal.neqeq, $const_set = Opal.const_set, $alias = Opal.alias;
 
-  Opal.add_stubs(['$require', '$===', '$real?', '$raise', '$new', '$*', '$cos', '$sin', '$attr_reader', '$class', '$==', '$real', '$imag', '$Complex', '$-@', '$+', '$__coerced__', '$-', '$nan?', '$/', '$conj', '$abs2', '$quo', '$polar', '$exp', '$log', '$>', '$!=', '$divmod', '$**', '$hypot', '$atan2', '$lcm', '$denominator', '$finite?', '$infinite?', '$numerator', '$abs', '$arg', '$rationalize', '$to_f', '$to_i', '$to_r', '$inspect', '$positive?', '$zero?', '$Rational']);
+  Opal.add_stubs('require,real?,===,raise,new,*,cos,sin,attr_reader,class,==,real,imag,Complex,-@,+,__coerced__,-,nan?,/,conj,abs2,quo,polar,exp,log,>,!=,divmod,**,hypot,atan2,lcm,denominator,finite?,infinite?,numerator,abs,arg,rationalize,to_f,to_i,to_r,inspect,zero?,positive?,Rational');
   
   self.$require("corelib/numeric");
-  (function($base, $super, $parent_nesting) {
+  self.$require("corelib/complex/base");
+  return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Complex');
 
-    var $nesting = [self].concat($parent_nesting), $Complex_rect$1, $Complex_polar$2, $Complex_initialize$3, $Complex_coerce$4, $Complex_$eq_eq$5, $Complex_$minus$$6, $Complex_$plus$7, $Complex_$minus$8, $Complex_$$9, $Complex_$slash$10, $Complex_$$$11, $Complex_abs$12, $Complex_abs2$13, $Complex_angle$14, $Complex_conj$15, $Complex_denominator$16, $Complex_eql$ques$17, $Complex_fdiv$18, $Complex_finite$ques$19, $Complex_hash$20, $Complex_infinite$ques$21, $Complex_inspect$22, $Complex_numerator$23, $Complex_polar$24, $Complex_rationalize$25, $Complex_real$ques$26, $Complex_rect$27, $Complex_to_f$28, $Complex_to_i$29, $Complex_to_r$30, $Complex_to_s$31;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-    self.$$prototype.real = self.$$prototype.imag = nil;
+    $proto.real = $proto.imag = nil;
     
-    Opal.defs(self, '$rect', $Complex_rect$1 = function $$rect(real, imag) {
-      var self = this, $ret_or_1 = nil, $ret_or_2 = nil, $ret_or_3 = nil;
+    $defs(self, '$rect', function $$rect(real, imag) {
+      var self = this;
 
       
       
-      if (imag == null) {
-        imag = 0;
-      };
-      if ($truthy((function() {if ($truthy(($ret_or_1 = (function() {if ($truthy(($ret_or_2 = (function() {if ($truthy(($ret_or_3 = $$($nesting, 'Numeric')['$==='](real)))) {
-        return real['$real?']()
-      } else {
-        return $ret_or_3
-      }; return nil; })()))) {
-        return $$($nesting, 'Numeric')['$==='](imag)
-      } else {
-        return $ret_or_2
-      }; return nil; })()))) {
-        return imag['$real?']()
-      } else {
-        return $ret_or_1
-      }; return nil; })())) {
-      } else {
-        self.$raise($$($nesting, 'TypeError'), "not a real")
+      if (imag == null) imag = 0;;
+      if (!((($eqeqeq($$$('Numeric'), real) && ($truthy(real['$real?']()))) && ($eqeqeq($$$('Numeric'), imag))) && ($truthy(imag['$real?']())))) {
+        $Kernel.$raise($$$('TypeError'), "not a real")
       };
       return self.$new(real, imag);
-    }, $Complex_rect$1.$$arity = -2);
-    (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
-      return $alias(self, "rectangular", "rect")
-    })(Opal.get_singleton_class(self), $nesting);
-    Opal.defs(self, '$polar', $Complex_polar$2 = function $$polar(r, theta) {
-      var self = this, $ret_or_4 = nil, $ret_or_5 = nil, $ret_or_6 = nil;
+    }, -2);
+    $defs(self, '$polar', function $$polar(r, theta) {
+      var self = this;
 
       
       
-      if (theta == null) {
-        theta = 0;
-      };
-      if ($truthy((function() {if ($truthy(($ret_or_4 = (function() {if ($truthy(($ret_or_5 = (function() {if ($truthy(($ret_or_6 = $$($nesting, 'Numeric')['$==='](r)))) {
-        return r['$real?']()
-      } else {
-        return $ret_or_6
-      }; return nil; })()))) {
-        return $$($nesting, 'Numeric')['$==='](theta)
-      } else {
-        return $ret_or_5
-      }; return nil; })()))) {
-        return theta['$real?']()
-      } else {
-        return $ret_or_4
-      }; return nil; })())) {
-      } else {
-        self.$raise($$($nesting, 'TypeError'), "not a real")
+      if (theta == null) theta = 0;;
+      if (!((($eqeqeq($$$('Numeric'), r) && ($truthy(r['$real?']()))) && ($eqeqeq($$$('Numeric'), theta))) && ($truthy(theta['$real?']())))) {
+        $Kernel.$raise($$$('TypeError'), "not a real")
       };
-      return self.$new($rb_times(r, $$($nesting, 'Math').$cos(theta)), $rb_times(r, $$($nesting, 'Math').$sin(theta)));
-    }, $Complex_polar$2.$$arity = -2);
+      return self.$new($rb_times(r, $$$('Math').$cos(theta)), $rb_times(r, $$$('Math').$sin(theta)));
+    }, -2);
     self.$attr_reader("real", "imag");
     
-    Opal.def(self, '$initialize', $Complex_initialize$3 = function $$initialize(real, imag) {
+    $def(self, '$initialize', function $$initialize(real, imag) {
       var self = this;
 
       
       
-      if (imag == null) {
-        imag = 0;
-      };
+      if (imag == null) imag = 0;;
       self.real = real;
       return (self.imag = imag);
-    }, $Complex_initialize$3.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$coerce', $Complex_coerce$4 = function $$coerce(other) {
-      var self = this, $ret_or_7 = nil;
+    $def(self, '$coerce', function $$coerce(other) {
+      var self = this;
 
-      if ($truthy($$($nesting, 'Complex')['$==='](other))) {
+      if ($eqeqeq($$$('Complex'), other)) {
         return [other, self]
-      } else if ($truthy((function() {if ($truthy(($ret_or_7 = $$($nesting, 'Numeric')['$==='](other)))) {
-        return other['$real?']()
-      } else {
-        return $ret_or_7
-      }; return nil; })())) {
-        return [$$($nesting, 'Complex').$new(other, 0), self]
+      } else if (($eqeqeq($$$('Numeric'), other) && ($truthy(other['$real?']())))) {
+        return [$$$('Complex').$new(other, 0), self]
       } else {
-        return self.$raise($$($nesting, 'TypeError'), "" + (other.$class()) + " can't be coerced into Complex")
+        return $Kernel.$raise($$$('TypeError'), "" + (other.$class()) + " can't be coerced into Complex")
       }
-    }, $Complex_coerce$4.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$==', $Complex_$eq_eq$5 = function(other) {
-      var self = this, $ret_or_8 = nil, $ret_or_9 = nil, $ret_or_10 = nil;
+    $def(self, '$==', function $Complex_$eq_eq$1(other) {
+      var self = this, $ret_or_1 = nil;
 
-      if ($truthy($$($nesting, 'Complex')['$==='](other))) {
-        if ($truthy(($ret_or_8 = self.real['$=='](other.$real())))) {
+      if ($eqeqeq($$$('Complex'), other)) {
+        if ($truthy(($ret_or_1 = self.real['$=='](other.$real())))) {
           return self.imag['$=='](other.$imag())
         } else {
-          return $ret_or_8
+          return $ret_or_1
         }
-      } else if ($truthy((function() {if ($truthy(($ret_or_9 = $$($nesting, 'Numeric')['$==='](other)))) {
-        return other['$real?']()
-      } else {
-        return $ret_or_9
-      }; return nil; })())) {
-        if ($truthy(($ret_or_10 = self.real['$=='](other)))) {
+      } else if (($eqeqeq($$$('Numeric'), other) && ($truthy(other['$real?']())))) {
+        if ($truthy(($ret_or_1 = self.real['$=='](other)))) {
           return self.imag['$=='](0)
         } else {
-          return $ret_or_10
+          return $ret_or_1
         }
       } else {
         return other['$=='](self)
       }
-    }, $Complex_$eq_eq$5.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$-@', $Complex_$minus$$6 = function() {
+    $def(self, '$-@', function $Complex_$minus$$2() {
       var self = this;
 
-      return self.$Complex(self.real['$-@'](), self.imag['$-@']())
-    }, $Complex_$minus$$6.$$arity = 0);
+      return $Kernel.$Complex(self.real['$-@'](), self.imag['$-@']())
+    }, 0);
     
-    Opal.def(self, '$+', $Complex_$plus$7 = function(other) {
-      var self = this, $ret_or_11 = nil;
+    $def(self, '$+', function $Complex_$plus$3(other) {
+      var self = this;
 
-      if ($truthy($$($nesting, 'Complex')['$==='](other))) {
-        return self.$Complex($rb_plus(self.real, other.$real()), $rb_plus(self.imag, other.$imag()))
-      } else if ($truthy((function() {if ($truthy(($ret_or_11 = $$($nesting, 'Numeric')['$==='](other)))) {
-        return other['$real?']()
-      } else {
-        return $ret_or_11
-      }; return nil; })())) {
-        return self.$Complex($rb_plus(self.real, other), self.imag)
+      if ($eqeqeq($$$('Complex'), other)) {
+        return $Kernel.$Complex($rb_plus(self.real, other.$real()), $rb_plus(self.imag, other.$imag()))
+      } else if (($eqeqeq($$$('Numeric'), other) && ($truthy(other['$real?']())))) {
+        return $Kernel.$Complex($rb_plus(self.real, other), self.imag)
       } else {
         return self.$__coerced__("+", other)
       }
-    }, $Complex_$plus$7.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$-', $Complex_$minus$8 = function(other) {
-      var self = this, $ret_or_12 = nil;
+    $def(self, '$-', function $Complex_$minus$4(other) {
+      var self = this;
 
-      if ($truthy($$($nesting, 'Complex')['$==='](other))) {
-        return self.$Complex($rb_minus(self.real, other.$real()), $rb_minus(self.imag, other.$imag()))
-      } else if ($truthy((function() {if ($truthy(($ret_or_12 = $$($nesting, 'Numeric')['$==='](other)))) {
-        return other['$real?']()
-      } else {
-        return $ret_or_12
-      }; return nil; })())) {
-        return self.$Complex($rb_minus(self.real, other), self.imag)
+      if ($eqeqeq($$$('Complex'), other)) {
+        return $Kernel.$Complex($rb_minus(self.real, other.$real()), $rb_minus(self.imag, other.$imag()))
+      } else if (($eqeqeq($$$('Numeric'), other) && ($truthy(other['$real?']())))) {
+        return $Kernel.$Complex($rb_minus(self.real, other), self.imag)
       } else {
         return self.$__coerced__("-", other)
       }
-    }, $Complex_$minus$8.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$*', $Complex_$$9 = function(other) {
-      var self = this, $ret_or_13 = nil;
+    $def(self, '$*', function $Complex_$$5(other) {
+      var self = this;
 
-      if ($truthy($$($nesting, 'Complex')['$==='](other))) {
-        return self.$Complex($rb_minus($rb_times(self.real, other.$real()), $rb_times(self.imag, other.$imag())), $rb_plus($rb_times(self.real, other.$imag()), $rb_times(self.imag, other.$real())))
-      } else if ($truthy((function() {if ($truthy(($ret_or_13 = $$($nesting, 'Numeric')['$==='](other)))) {
-        return other['$real?']()
-      } else {
-        return $ret_or_13
-      }; return nil; })())) {
-        return self.$Complex($rb_times(self.real, other), $rb_times(self.imag, other))
+      if ($eqeqeq($$$('Complex'), other)) {
+        return $Kernel.$Complex($rb_minus($rb_times(self.real, other.$real()), $rb_times(self.imag, other.$imag())), $rb_plus($rb_times(self.real, other.$imag()), $rb_times(self.imag, other.$real())))
+      } else if (($eqeqeq($$$('Numeric'), other) && ($truthy(other['$real?']())))) {
+        return $Kernel.$Complex($rb_times(self.real, other), $rb_times(self.imag, other))
       } else {
         return self.$__coerced__("*", other)
       }
-    }, $Complex_$$9.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$/', $Complex_$slash$10 = function(other) {
-      var self = this, $ret_or_14 = nil, $ret_or_15 = nil, $ret_or_16 = nil, $ret_or_17 = nil, $ret_or_18 = nil, $ret_or_19 = nil, $ret_or_20 = nil, $ret_or_21 = nil;
+    $def(self, '$/', function $Complex_$slash$6(other) {
+      var self = this;
 
-      if ($truthy($$($nesting, 'Complex')['$==='](other))) {
-        if ($truthy((function() {if ($truthy(($ret_or_14 = (function() {if ($truthy(($ret_or_15 = (function() {if ($truthy(($ret_or_16 = (function() {if ($truthy(($ret_or_17 = $$($nesting, 'Number')['$==='](self.real)))) {
-          return self.real['$nan?']()
-        } else {
-          return $ret_or_17
-        }; return nil; })()))) {
-          return $ret_or_16
-        } else {
-          
-          if ($truthy(($ret_or_18 = $$($nesting, 'Number')['$==='](self.imag)))) {
-            return self.imag['$nan?']()
-          } else {
-            return $ret_or_18
-          };
-        }; return nil; })()))) {
-          return $ret_or_15
-        } else {
-          
-          if ($truthy(($ret_or_19 = $$($nesting, 'Number')['$==='](other.$real())))) {
-            return other.$real()['$nan?']()
-          } else {
-            return $ret_or_19
-          };
-        }; return nil; })()))) {
-          return $ret_or_14
-        } else {
-          
-          if ($truthy(($ret_or_20 = $$($nesting, 'Number')['$==='](other.$imag())))) {
-            return other.$imag()['$nan?']()
-          } else {
-            return $ret_or_20
-          };
-        }; return nil; })())) {
-          return $$($nesting, 'Complex').$new($$$($$($nesting, 'Float'), 'NAN'), $$$($$($nesting, 'Float'), 'NAN'))
+      if ($eqeqeq($$$('Complex'), other)) {
+        if ((((($eqeqeq($$$('Number'), self.real) && ($truthy(self.real['$nan?']()))) || (($eqeqeq($$$('Number'), self.imag) && ($truthy(self.imag['$nan?']()))))) || (($eqeqeq($$$('Number'), other.$real()) && ($truthy(other.$real()['$nan?']()))))) || (($eqeqeq($$$('Number'), other.$imag()) && ($truthy(other.$imag()['$nan?']())))))) {
+          return $$$('Complex').$new($$$($$$('Float'), 'NAN'), $$$($$$('Float'), 'NAN'))
         } else {
           return $rb_divide($rb_times(self, other.$conj()), other.$abs2())
         }
-      } else if ($truthy((function() {if ($truthy(($ret_or_21 = $$($nesting, 'Numeric')['$==='](other)))) {
-        return other['$real?']()
-      } else {
-        return $ret_or_21
-      }; return nil; })())) {
-        return self.$Complex(self.real.$quo(other), self.imag.$quo(other))
+      } else if (($eqeqeq($$$('Numeric'), other) && ($truthy(other['$real?']())))) {
+        return $Kernel.$Complex(self.real.$quo(other), self.imag.$quo(other))
       } else {
         return self.$__coerced__("/", other)
       }
-    }, $Complex_$slash$10.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$**', $Complex_$$$11 = function(other) {
-      var $a, $b, $c, $d, self = this, r = nil, theta = nil, ore = nil, oim = nil, nr = nil, ntheta = nil, x = nil, z = nil, n = nil, div = nil, mod = nil, $ret_or_22 = nil;
+    $def(self, '$**', function $Complex_$$$7(other) {
+      var $a, $b, $c, $d, self = this, r = nil, theta = nil, ore = nil, oim = nil, nr = nil, ntheta = nil, x = nil, z = nil, n = nil, div = nil, mod = nil;
 
       
-      if (other['$=='](0)) {
-        return $$($nesting, 'Complex').$new(1, 0)};
-      if ($truthy($$($nesting, 'Complex')['$==='](other))) {
+      if ($eqeq(other, 0)) {
+        return $$$('Complex').$new(1, 0)
+      };
+      if ($eqeqeq($$$('Complex'), other)) {
         
-        $b = self.$polar(), $a = Opal.to_ary($b), (r = ($a[0] == null ? nil : $a[0])), (theta = ($a[1] == null ? nil : $a[1])), $b;
+        $b = self.$polar(), $a = $to_ary($b), (r = ($a[0] == null ? nil : $a[0])), (theta = ($a[1] == null ? nil : $a[1])), $b;
         ore = other.$real();
         oim = other.$imag();
-        nr = $$($nesting, 'Math').$exp($rb_minus($rb_times(ore, $$($nesting, 'Math').$log(r)), $rb_times(oim, theta)));
-        ntheta = $rb_plus($rb_times(theta, ore), $rb_times(oim, $$($nesting, 'Math').$log(r)));
-        return $$($nesting, 'Complex').$polar(nr, ntheta);
-      } else if ($truthy($$($nesting, 'Integer')['$==='](other))) {
+        nr = $$$('Math').$exp($rb_minus($rb_times(ore, $$$('Math').$log(r)), $rb_times(oim, theta)));
+        ntheta = $rb_plus($rb_times(theta, ore), $rb_times(oim, $$$('Math').$log(r)));
+        return $$$('Complex').$polar(nr, ntheta);
+      } else if ($eqeqeq($$$('Integer'), other)) {
         if ($truthy($rb_gt(other, 0))) {
           
           x = self;
           z = x;
           n = $rb_minus(other, 1);
-          while ($truthy(n['$!='](0))) {
+          while ($neqeq(n, 0)) {
             
-            $c = n.$divmod(2), $b = Opal.to_ary($c), (div = ($b[0] == null ? nil : $b[0])), (mod = ($b[1] == null ? nil : $b[1])), $c;
-            while (mod['$=='](0)) {
+            $c = n.$divmod(2), $b = $to_ary($c), (div = ($b[0] == null ? nil : $b[0])), (mod = ($b[1] == null ? nil : $b[1])), $c;
+            while ($eqeq(mod, 0)) {
               
-              x = self.$Complex($rb_minus($rb_times(x.$real(), x.$real()), $rb_times(x.$imag(), x.$imag())), $rb_times($rb_times(2, x.$real()), x.$imag()));
+              x = $Kernel.$Complex($rb_minus($rb_times(x.$real(), x.$real()), $rb_times(x.$imag(), x.$imag())), $rb_times($rb_times(2, x.$real()), x.$imag()));
               n = div;
-              $d = n.$divmod(2), $c = Opal.to_ary($d), (div = ($c[0] == null ? nil : $c[0])), (mod = ($c[1] == null ? nil : $c[1])), $d;
+              $d = n.$divmod(2), $c = $to_ary($d), (div = ($c[0] == null ? nil : $c[0])), (mod = ($c[1] == null ? nil : $c[1])), $d;
             };
             z = $rb_times(z, x);
             n = $rb_minus(n, 1);
           };
           return z;
         } else {
-          return $rb_divide($$($nesting, 'Rational').$new(1, 1), self)['$**'](other['$-@']())
+          return $rb_divide($$$('Rational').$new(1, 1), self)['$**'](other['$-@']())
         }
-      } else if ($truthy((function() {if ($truthy(($ret_or_22 = $$($nesting, 'Float')['$==='](other)))) {
-        return $ret_or_22
-      } else {
-        return $$($nesting, 'Rational')['$==='](other)
-      }; return nil; })())) {
+      } else if (($eqeqeq($$$('Float'), other) || ($eqeqeq($$$('Rational'), other)))) {
         
-        $b = self.$polar(), $a = Opal.to_ary($b), (r = ($a[0] == null ? nil : $a[0])), (theta = ($a[1] == null ? nil : $a[1])), $b;
-        return $$($nesting, 'Complex').$polar(r['$**'](other), $rb_times(theta, other));
+        $b = self.$polar(), $a = $to_ary($b), (r = ($a[0] == null ? nil : $a[0])), (theta = ($a[1] == null ? nil : $a[1])), $b;
+        return $$$('Complex').$polar(r['$**'](other), $rb_times(theta, other));
       } else {
         return self.$__coerced__("**", other)
       };
-    }, $Complex_$$$11.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$abs', $Complex_abs$12 = function $$abs() {
+    $def(self, '$abs', function $$abs() {
       var self = this;
 
-      return $$($nesting, 'Math').$hypot(self.real, self.imag)
-    }, $Complex_abs$12.$$arity = 0);
+      return $$$('Math').$hypot(self.real, self.imag)
+    }, 0);
     
-    Opal.def(self, '$abs2', $Complex_abs2$13 = function $$abs2() {
+    $def(self, '$abs2', function $$abs2() {
       var self = this;
 
       return $rb_plus($rb_times(self.real, self.real), $rb_times(self.imag, self.imag))
-    }, $Complex_abs2$13.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$angle', $Complex_angle$14 = function $$angle() {
+    $def(self, '$angle', function $$angle() {
       var self = this;
 
-      return $$($nesting, 'Math').$atan2(self.imag, self.real)
-    }, $Complex_angle$14.$$arity = 0);
-    $alias(self, "arg", "angle");
+      return $$$('Math').$atan2(self.imag, self.real)
+    }, 0);
     
-    Opal.def(self, '$conj', $Complex_conj$15 = function $$conj() {
+    $def(self, '$conj', function $$conj() {
       var self = this;
 
-      return self.$Complex(self.real, self.imag['$-@']())
-    }, $Complex_conj$15.$$arity = 0);
-    $alias(self, "conjugate", "conj");
+      return $Kernel.$Complex(self.real, self.imag['$-@']())
+    }, 0);
     
-    Opal.def(self, '$denominator', $Complex_denominator$16 = function $$denominator() {
+    $def(self, '$denominator', function $$denominator() {
       var self = this;
 
       return self.real.$denominator().$lcm(self.imag.$denominator())
-    }, $Complex_denominator$16.$$arity = 0);
-    $alias(self, "divide", "/");
+    }, 0);
     
-    Opal.def(self, '$eql?', $Complex_eql$ques$17 = function(other) {
-      var self = this, $ret_or_23 = nil, $ret_or_24 = nil;
+    $def(self, '$eql?', function $Complex_eql$ques$8(other) {
+      var self = this, $ret_or_1 = nil, $ret_or_2 = nil;
 
-      if ($truthy(($ret_or_23 = (function() {if ($truthy(($ret_or_24 = $$($nesting, 'Complex')['$==='](other)))) {
-        return self.real.$class()['$=='](self.imag.$class())
-      } else {
-        return $ret_or_24
-      }; return nil; })()))) {
+      if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = $$('Complex')['$==='](other))) ? (self.real.$class()['$=='](self.imag.$class())) : ($ret_or_2))))) {
         return self['$=='](other)
       } else {
-        return $ret_or_23
+        return $ret_or_1
       }
-    }, $Complex_eql$ques$17.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$fdiv', $Complex_fdiv$18 = function $$fdiv(other) {
+    $def(self, '$fdiv', function $$fdiv(other) {
       var self = this;
 
       
-      if ($truthy($$($nesting, 'Numeric')['$==='](other))) {
-      } else {
-        self.$raise($$($nesting, 'TypeError'), "" + (other.$class()) + " can't be coerced into Complex")
+      if (!$eqeqeq($$$('Numeric'), other)) {
+        $Kernel.$raise($$$('TypeError'), "" + (other.$class()) + " can't be coerced into Complex")
       };
       return $rb_divide(self, other);
-    }, $Complex_fdiv$18.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$finite?', $Complex_finite$ques$19 = function() {
-      var self = this, $ret_or_25 = nil;
+    $def(self, '$finite?', function $Complex_finite$ques$9() {
+      var self = this, $ret_or_1 = nil;
 
-      if ($truthy(($ret_or_25 = self.real['$finite?']()))) {
+      if ($truthy(($ret_or_1 = self.real['$finite?']()))) {
         return self.imag['$finite?']()
       } else {
-        return $ret_or_25
+        return $ret_or_1
       }
-    }, $Complex_finite$ques$19.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$hash', $Complex_hash$20 = function $$hash() {
+    $def(self, '$hash', function $$hash() {
       var self = this;
 
-      return "" + "Complex:" + (self.real) + ":" + (self.imag)
-    }, $Complex_hash$20.$$arity = 0);
-    $alias(self, "imaginary", "imag");
+      return "Complex:" + (self.real) + ":" + (self.imag)
+    }, 0);
     
-    Opal.def(self, '$infinite?', $Complex_infinite$ques$21 = function() {
-      var self = this, $ret_or_26 = nil;
+    $def(self, '$infinite?', function $Complex_infinite$ques$10() {
+      var self = this, $ret_or_1 = nil;
 
-      if ($truthy(($ret_or_26 = self.real['$infinite?']()))) {
-        return $ret_or_26
+      if ($truthy(($ret_or_1 = self.real['$infinite?']()))) {
+        return $ret_or_1
       } else {
         return self.imag['$infinite?']()
       }
-    }, $Complex_infinite$ques$21.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$inspect', $Complex_inspect$22 = function $$inspect() {
+    $def(self, '$inspect', function $$inspect() {
       var self = this;
 
-      return "" + "(" + (self) + ")"
-    }, $Complex_inspect$22.$$arity = 0);
-    $alias(self, "magnitude", "abs");
+      return "(" + (self) + ")"
+    }, 0);
     
-    Opal.udef(self, '$' + "negative?");;
-    
-    Opal.def(self, '$numerator', $Complex_numerator$23 = function $$numerator() {
+    $def(self, '$numerator', function $$numerator() {
       var self = this, d = nil;
 
       
       d = self.$denominator();
-      return self.$Complex($rb_times(self.real.$numerator(), $rb_divide(d, self.real.$denominator())), $rb_times(self.imag.$numerator(), $rb_divide(d, self.imag.$denominator())));
-    }, $Complex_numerator$23.$$arity = 0);
-    $alias(self, "phase", "arg");
+      return $Kernel.$Complex($rb_times(self.real.$numerator(), $rb_divide(d, self.real.$denominator())), $rb_times(self.imag.$numerator(), $rb_divide(d, self.imag.$denominator())));
+    }, 0);
     
-    Opal.def(self, '$polar', $Complex_polar$24 = function $$polar() {
+    $def(self, '$polar', function $$polar() {
       var self = this;
 
       return [self.$abs(), self.$arg()]
-    }, $Complex_polar$24.$$arity = 0);
-    
-    Opal.udef(self, '$' + "positive?");;
-    $alias(self, "quo", "/");
+    }, 0);
     
-    Opal.def(self, '$rationalize', $Complex_rationalize$25 = function $$rationalize(eps) {
+    $def(self, '$rationalize', function $$rationalize(eps) {
       var self = this;
 
       
       ;
       
       if (arguments.length > 1) {
-        self.$raise($$($nesting, 'ArgumentError'), "" + "wrong number of arguments (" + (arguments.length) + " for 0..1)");
+        $Kernel.$raise($$$('ArgumentError'), "wrong number of arguments (" + (arguments.length) + " for 0..1)");
       }
     ;
-      if ($truthy(self.imag['$!='](0))) {
-        self.$raise($$($nesting, 'RangeError'), "" + "can't' convert " + (self) + " into Rational")};
+      if ($neqeq(self.imag, 0)) {
+        $Kernel.$raise($$$('RangeError'), "can't convert " + (self) + " into Rational")
+      };
       return self.$real().$rationalize(eps);
-    }, $Complex_rationalize$25.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$real?', $Complex_real$ques$26 = function() {
-      var self = this;
-
+    $def(self, '$real?', function $Complex_real$ques$11() {
+      
       return false
-    }, $Complex_real$ques$26.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$rect', $Complex_rect$27 = function $$rect() {
+    $def(self, '$rect', function $$rect() {
       var self = this;
 
       return [self.real, self.imag]
-    }, $Complex_rect$27.$$arity = 0);
-    $alias(self, "rectangular", "rect");
-    
-    Opal.udef(self, '$' + "step");;
+    }, 0);
     
-    Opal.def(self, '$to_f', $Complex_to_f$28 = function $$to_f() {
+    $def(self, '$to_f', function $$to_f() {
       var self = this;
 
       
-      if (self.imag['$=='](0)) {
-      } else {
-        self.$raise($$($nesting, 'RangeError'), "" + "can't convert " + (self) + " into Float")
+      if (!$eqeq(self.imag, 0)) {
+        $Kernel.$raise($$$('RangeError'), "can't convert " + (self) + " into Float")
       };
       return self.real.$to_f();
-    }, $Complex_to_f$28.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_i', $Complex_to_i$29 = function $$to_i() {
+    $def(self, '$to_i', function $$to_i() {
       var self = this;
 
       
-      if (self.imag['$=='](0)) {
-      } else {
-        self.$raise($$($nesting, 'RangeError'), "" + "can't convert " + (self) + " into Integer")
+      if (!$eqeq(self.imag, 0)) {
+        $Kernel.$raise($$$('RangeError'), "can't convert " + (self) + " into Integer")
       };
       return self.real.$to_i();
-    }, $Complex_to_i$29.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_r', $Complex_to_r$30 = function $$to_r() {
+    $def(self, '$to_r', function $$to_r() {
       var self = this;
 
       
-      if (self.imag['$=='](0)) {
-      } else {
-        self.$raise($$($nesting, 'RangeError'), "" + "can't convert " + (self) + " into Rational")
+      if (!$eqeq(self.imag, 0)) {
+        $Kernel.$raise($$$('RangeError'), "can't convert " + (self) + " into Rational")
       };
       return self.real.$to_r();
-    }, $Complex_to_r$30.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_s', $Complex_to_s$31 = function $$to_s() {
-      var self = this, result = nil, $ret_or_27 = nil, $ret_or_28 = nil, $ret_or_29 = nil, $ret_or_30 = nil, $ret_or_31 = nil;
+    $def(self, '$to_s', function $$to_s() {
+      var self = this, result = nil;
 
       
       result = self.real.$inspect();
-      result = $rb_plus(result, (function() {if ($truthy((function() {if ($truthy(($ret_or_27 = (function() {if ($truthy(($ret_or_28 = (function() {if ($truthy(($ret_or_29 = $$($nesting, 'Number')['$==='](self.imag)))) {
-        return self.imag['$nan?']()
-      } else {
-        return $ret_or_29
-      }; return nil; })()))) {
-        return $ret_or_28
-      } else {
-        return self.imag['$positive?']()
-      }; return nil; })()))) {
-        return $ret_or_27
-      } else {
-        return self.imag['$zero?']()
-      }; return nil; })())) {
-        return "+"
-      } else {
-        return "-"
-      }; return nil; })());
+      result = $rb_plus(result, (((($eqeqeq($$$('Number'), self.imag) && ($truthy(self.imag['$nan?']()))) || ($truthy(self.imag['$positive?']()))) || ($truthy(self.imag['$zero?']()))) ? ("+") : ("-")));
       result = $rb_plus(result, self.imag.$abs().$inspect());
-      if ($truthy((function() {if ($truthy(($ret_or_30 = $$($nesting, 'Number')['$==='](self.imag)))) {
-        
-        if ($truthy(($ret_or_31 = self.imag['$nan?']()))) {
-          return $ret_or_31
-        } else {
-          return self.imag['$infinite?']()
-        };
-      } else {
-        return $ret_or_30
-      }; return nil; })())) {
-        result = $rb_plus(result, "*")};
+      if (($eqeqeq($$$('Number'), self.imag) && (($truthy(self.imag['$nan?']()) || ($truthy(self.imag['$infinite?']())))))) {
+        result = $rb_plus(result, "*")
+      };
       return $rb_plus(result, "i");
-    }, $Complex_to_s$31.$$arity = 0);
-    return Opal.const_set($nesting[0], 'I', self.$new(0, 1));
-  })($nesting[0], $$($nesting, 'Numeric'), $nesting);
-  (function($base, $parent_nesting) {
-    var self = $module($base, 'Kernel');
-
-    var $nesting = [self].concat($parent_nesting), $Kernel_Complex$32;
-
-    return (Opal.def(self, '$Complex', $Kernel_Complex$32 = function $$Complex(real, imag) {
-      var self = this;
-
+    }, 0);
+    $const_set($nesting[0], 'I', self.$new(0, 1));
+    $defs(self, '$from_string', function $$from_string(str) {
       
       
-      if (imag == null) {
-        imag = nil;
-      };
-      if ($truthy(imag)) {
-        return $$($nesting, 'Complex').$new(real, imag)
-      } else {
-        return $$($nesting, 'Complex').$new(real, 0)
-      };
-    }, $Kernel_Complex$32.$$arity = -2), nil) && 'Complex'
-  })($nesting[0], $nesting);
-  return (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'String');
-
-    var $nesting = [self].concat($parent_nesting), $String_to_c$33;
-
-    return (Opal.def(self, '$to_c', $String_to_c$33 = function $$to_c() {
-      var self = this;
-
-      
-      var str = self,
-          re = /[+-]?[\d_]+(\.[\d_]+)?(e\d+)?/,
+      var re = /[+-]?[\d_]+(\.[\d_]+)?(e\d+)?/,
           match = str.match(re),
           real, imag, denominator;
 
@@ -22014,7 +21642,7 @@ Opal.modules["corelib/complex"] = function(Opal) {
 
             if (isFloat()) {
               var denominator = parseFloat(cutFloat());
-              return self.$Rational(numerator, denominator);
+              return $Kernel.$Rational(numerator, denominator);
             } else {
               // reverting '/'
               str = '/' + str;
@@ -22034,353 +21662,372 @@ Opal.modules["corelib/complex"] = function(Opal) {
       if (!real) {
         if (str[0] === 'i') {
           // i => Complex(0, 1)
-          return self.$Complex(0, 1);
+          return $Kernel.$Complex(0, 1);
         }
         if (str[0] === '-' && str[1] === 'i') {
           // -i => Complex(0, -1)
-          return self.$Complex(0, -1);
+          return $Kernel.$Complex(0, -1);
         }
         if (str[0] === '+' && str[1] === 'i') {
           // +i => Complex(0, 1)
-          return self.$Complex(0, 1);
+          return $Kernel.$Complex(0, 1);
         }
         // anything => Complex(0, 0)
-        return self.$Complex(0, 0);
+        return $Kernel.$Complex(0, 0);
       }
 
       imag = cutNumber();
       if (!imag) {
         if (str[0] === 'i') {
           // 3i => Complex(0, 3)
-          return self.$Complex(0, real);
+          return $Kernel.$Complex(0, real);
         } else {
           // 3 => Complex(3, 0)
-          return self.$Complex(real, 0);
+          return $Kernel.$Complex(real, 0);
         }
       } else {
         // 3+2i => Complex(3, 2)
-        return self.$Complex(real, imag);
+        return $Kernel.$Complex(real, imag);
       }
     
-    }, $String_to_c$33.$$arity = 0), nil) && 'to_c'
-  })($nesting[0], null, $nesting);
+    }, 1);
+    (function(self, $parent_nesting) {
+      
+      return $alias(self, "rectangular", "rect")
+    })(Opal.get_singleton_class(self), $nesting);
+    $alias(self, "arg", "angle");
+    $alias(self, "conjugate", "conj");
+    $alias(self, "divide", "/");
+    $alias(self, "imaginary", "imag");
+    $alias(self, "magnitude", "abs");
+    $alias(self, "phase", "arg");
+    $alias(self, "quo", "/");
+    $alias(self, "rectangular", "rect");
+    
+    Opal.udef(self, '$' + "negative?");;
+    
+    Opal.udef(self, '$' + "positive?");;
+    
+    
+    Opal.udef(self, '$' + "step");;
+    return nil;;
+  })('::', $$$('Numeric'), $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/rational"] = function(Opal) {
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  function $rb_divide(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs / rhs : lhs['$/'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_times(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs * rhs : lhs['$*'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_le(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs <= rhs : lhs['$<='](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $truthy = Opal.truthy, $alias = Opal.alias, $module = Opal.module;
+Opal.modules["corelib/rational/base"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $def = Opal.def, $klass = Opal.klass;
+
+  Opal.add_stubs('convert,from_string');
+  
+  (function($base) {
+    var self = $module($base, 'Kernel');
+
+    
+    return $def(self, '$Rational', function $$Rational(numerator, denominator) {
+      
+      
+      
+      if (denominator == null) denominator = 1;;
+      return $$$('Rational').$convert(numerator, denominator);
+    }, -2)
+  })('::');
+  return (function($base, $super) {
+    var self = $klass($base, $super, 'String');
+
+    
+    return $def(self, '$to_r', function $$to_r() {
+      var self = this;
+
+      return $$$('Rational').$from_string(self)
+    }, 0)
+  })('::', null);
+};
 
-  Opal.add_stubs(['$require', '$to_i', '$==', '$raise', '$<', '$-@', '$new', '$gcd', '$/', '$nil?', '$===', '$reduce', '$to_r', '$equal?', '$!', '$coerce_to!', '$to_f', '$numerator', '$denominator', '$<=>', '$-', '$*', '$__coerced__', '$+', '$Rational', '$>', '$**', '$abs', '$ceil', '$with_precision', '$floor', '$<=', '$truncate', '$send', '$convert']);
+Opal.modules["corelib/rational"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $eqeq = Opal.eqeq, $Kernel = Opal.Kernel, $truthy = Opal.truthy, $rb_lt = Opal.rb_lt, $rb_divide = Opal.rb_divide, $defs = Opal.defs, $eqeqeq = Opal.eqeqeq, $not = Opal.not, $Opal = Opal.Opal, $def = Opal.def, $rb_minus = Opal.rb_minus, $rb_times = Opal.rb_times, $rb_plus = Opal.rb_plus, $rb_gt = Opal.rb_gt, $rb_le = Opal.rb_le, $alias = Opal.alias;
+
+  Opal.add_stubs('require,to_i,==,raise,<,-@,new,gcd,/,nil?,===,reduce,to_r,!,equal?,coerce_to!,to_f,numerator,denominator,<=>,-,*,__coerced__,+,Rational,>,**,abs,ceil,with_precision,floor,<=,truncate,send');
   
   self.$require("corelib/numeric");
-  (function($base, $super, $parent_nesting) {
+  self.$require("corelib/rational/base");
+  return (function($base, $super) {
     var self = $klass($base, $super, 'Rational');
 
-    var $nesting = [self].concat($parent_nesting), $Rational_reduce$1, $Rational_convert$2, $Rational_initialize$3, $Rational_numerator$4, $Rational_denominator$5, $Rational_coerce$6, $Rational_$eq_eq$7, $Rational_$lt_eq_gt$8, $Rational_$plus$9, $Rational_$minus$10, $Rational_$$11, $Rational_$slash$12, $Rational_$$$13, $Rational_abs$14, $Rational_ceil$15, $Rational_floor$16, $Rational_hash$17, $Rational_inspect$18, $Rational_rationalize$19, $Rational_round$20, $Rational_to_f$21, $Rational_to_i$22, $Rational_to_r$23, $Rational_to_s$24, $Rational_truncate$25, $Rational_with_precision$26;
+    var $proto = self.$$prototype;
 
-    self.$$prototype.num = self.$$prototype.den = nil;
+    $proto.num = $proto.den = nil;
     
-    Opal.defs(self, '$reduce', $Rational_reduce$1 = function $$reduce(num, den) {
+    $defs(self, '$reduce', function $$reduce(num, den) {
       var self = this, gcd = nil;
 
       
       num = num.$to_i();
       den = den.$to_i();
-      if (den['$=='](0)) {
-        self.$raise($$($nesting, 'ZeroDivisionError'), "divided by 0")
+      if ($eqeq(den, 0)) {
+        $Kernel.$raise($$$('ZeroDivisionError'), "divided by 0")
       } else if ($truthy($rb_lt(den, 0))) {
         
         num = num['$-@']();
         den = den['$-@']();
-      } else if (den['$=='](1)) {
-        return self.$new(num, den)};
+      } else if ($eqeq(den, 1)) {
+        return self.$new(num, den)
+      };
       gcd = num.$gcd(den);
       return self.$new($rb_divide(num, gcd), $rb_divide(den, gcd));
-    }, $Rational_reduce$1.$$arity = 2);
-    Opal.defs(self, '$convert', $Rational_convert$2 = function $$convert(num, den) {
-      var self = this, $ret_or_1 = nil, $ret_or_2 = nil, $ret_or_3 = nil, $ret_or_4 = nil, $ret_or_5 = nil, $ret_or_6 = nil, $ret_or_7 = nil, $ret_or_8 = nil;
+    }, 2);
+    $defs(self, '$convert', function $$convert(num, den) {
+      var self = this;
 
       
-      if ($truthy((function() {if ($truthy(($ret_or_1 = num['$nil?']()))) {
-        return $ret_or_1
-      } else {
-        return den['$nil?']()
-      }; return nil; })())) {
-        self.$raise($$($nesting, 'TypeError'), "cannot convert nil into Rational")};
-      if ($truthy((function() {if ($truthy(($ret_or_2 = $$($nesting, 'Integer')['$==='](num)))) {
-        return $$($nesting, 'Integer')['$==='](den)
-      } else {
-        return $ret_or_2
-      }; return nil; })())) {
-        return self.$reduce(num, den)};
-      if ($truthy((function() {if ($truthy(($ret_or_3 = (function() {if ($truthy(($ret_or_4 = $$($nesting, 'Float')['$==='](num)))) {
-        return $ret_or_4
-      } else {
-        return $$($nesting, 'String')['$==='](num)
-      }; return nil; })()))) {
-        return $ret_or_3
-      } else {
-        return $$($nesting, 'Complex')['$==='](num)
-      }; return nil; })())) {
-        num = num.$to_r()};
-      if ($truthy((function() {if ($truthy(($ret_or_5 = (function() {if ($truthy(($ret_or_6 = $$($nesting, 'Float')['$==='](den)))) {
-        return $ret_or_6
-      } else {
-        return $$($nesting, 'String')['$==='](den)
-      }; return nil; })()))) {
-        return $ret_or_5
-      } else {
-        return $$($nesting, 'Complex')['$==='](den)
-      }; return nil; })())) {
-        den = den.$to_r()};
-      if ($truthy((function() {if ($truthy(($ret_or_7 = den['$equal?'](1)))) {
-        return $$($nesting, 'Integer')['$==='](num)['$!']()
-      } else {
-        return $ret_or_7
-      }; return nil; })())) {
-        return $$($nesting, 'Opal')['$coerce_to!'](num, $$($nesting, 'Rational'), "to_r")
-      } else if ($truthy((function() {if ($truthy(($ret_or_8 = $$($nesting, 'Numeric')['$==='](num)))) {
-        return $$($nesting, 'Numeric')['$==='](den)
-      } else {
-        return $ret_or_8
-      }; return nil; })())) {
+      if (($truthy(num['$nil?']()) || ($truthy(den['$nil?']())))) {
+        $Kernel.$raise($$$('TypeError'), "cannot convert nil into Rational")
+      };
+      if (($eqeqeq($$$('Integer'), num) && ($eqeqeq($$$('Integer'), den)))) {
+        return self.$reduce(num, den)
+      };
+      if ((($eqeqeq($$$('Float'), num) || ($eqeqeq($$$('String'), num))) || ($eqeqeq($$$('Complex'), num)))) {
+        num = num.$to_r()
+      };
+      if ((($eqeqeq($$$('Float'), den) || ($eqeqeq($$$('String'), den))) || ($eqeqeq($$$('Complex'), den)))) {
+        den = den.$to_r()
+      };
+      if (($truthy(den['$equal?'](1)) && ($not($$$('Integer')['$==='](num))))) {
+        return $Opal['$coerce_to!'](num, $$$('Rational'), "to_r")
+      } else if (($eqeqeq($$$('Numeric'), num) && ($eqeqeq($$$('Numeric'), den)))) {
         return $rb_divide(num, den)
       } else {
         return self.$reduce(num, den)
       };
-    }, $Rational_convert$2.$$arity = 2);
+    }, 2);
     
-    Opal.def(self, '$initialize', $Rational_initialize$3 = function $$initialize(num, den) {
+    $def(self, '$initialize', function $$initialize(num, den) {
       var self = this;
 
       
       self.num = num;
       return (self.den = den);
-    }, $Rational_initialize$3.$$arity = 2);
+    }, 2);
     
-    Opal.def(self, '$numerator', $Rational_numerator$4 = function $$numerator() {
+    $def(self, '$numerator', function $$numerator() {
       var self = this;
 
       return self.num
-    }, $Rational_numerator$4.$$arity = 0);
+    }, 0);
+    
+    $def(self, '$denominator', function $$denominator() {
+      var self = this;
+
+      return self.den
+    }, 0);
+    
+    $def(self, '$coerce', function $$coerce(other) {
+      var self = this, $ret_or_1 = nil;
+
+      if ($eqeqeq($$$('Rational'), ($ret_or_1 = other))) {
+        return [other, self]
+      } else if ($eqeqeq($$$('Integer'), $ret_or_1)) {
+        return [other.$to_r(), self]
+      } else if ($eqeqeq($$$('Float'), $ret_or_1)) {
+        return [other, self.$to_f()]
+      } else {
+        return nil
+      }
+    }, 1);
+    
+    $def(self, '$==', function $Rational_$eq_eq$1(other) {
+      var self = this, $ret_or_1 = nil, $ret_or_2 = nil;
+
+      if ($eqeqeq($$$('Rational'), ($ret_or_1 = other))) {
+        if ($truthy(($ret_or_2 = self.num['$=='](other.$numerator())))) {
+          return self.den['$=='](other.$denominator())
+        } else {
+          return $ret_or_2
+        }
+      } else if ($eqeqeq($$$('Integer'), $ret_or_1)) {
+        if ($truthy(($ret_or_2 = self.num['$=='](other)))) {
+          return self.den['$=='](1)
+        } else {
+          return $ret_or_2
+        }
+      } else if ($eqeqeq($$$('Float'), $ret_or_1)) {
+        return self.$to_f()['$=='](other)
+      } else {
+        return other['$=='](self)
+      }
+    }, 1);
     
-    Opal.def(self, '$denominator', $Rational_denominator$5 = function $$denominator() {
-      var self = this;
+    $def(self, '$<=>', function $Rational_$lt_eq_gt$2(other) {
+      var self = this, $ret_or_1 = nil;
 
-      return self.den
-    }, $Rational_denominator$5.$$arity = 0);
+      if ($eqeqeq($$$('Rational'), ($ret_or_1 = other))) {
+        return $rb_minus($rb_times(self.num, other.$denominator()), $rb_times(self.den, other.$numerator()))['$<=>'](0)
+      } else if ($eqeqeq($$$('Integer'), $ret_or_1)) {
+        return $rb_minus(self.num, $rb_times(self.den, other))['$<=>'](0)
+      } else if ($eqeqeq($$$('Float'), $ret_or_1)) {
+        return self.$to_f()['$<=>'](other)
+      } else {
+        return self.$__coerced__("<=>", other)
+      }
+    }, 1);
     
-    Opal.def(self, '$coerce', $Rational_coerce$6 = function $$coerce(other) {
-      var self = this, $case = nil;
+    $def(self, '$+', function $Rational_$plus$3(other) {
+      var self = this, $ret_or_1 = nil, num = nil, den = nil;
 
-      return (function() {$case = other;
-      if ($$($nesting, 'Rational')['$===']($case)) {return [other, self]}
-      else if ($$($nesting, 'Integer')['$===']($case)) {return [other.$to_r(), self]}
-      else if ($$($nesting, 'Float')['$===']($case)) {return [other, self.$to_f()]}
-      else { return nil }})()
-    }, $Rational_coerce$6.$$arity = 1);
+      if ($eqeqeq($$$('Rational'), ($ret_or_1 = other))) {
+        
+        num = $rb_plus($rb_times(self.num, other.$denominator()), $rb_times(self.den, other.$numerator()));
+        den = $rb_times(self.den, other.$denominator());
+        return $Kernel.$Rational(num, den);
+      } else if ($eqeqeq($$$('Integer'), $ret_or_1)) {
+        return $Kernel.$Rational($rb_plus(self.num, $rb_times(other, self.den)), self.den)
+      } else if ($eqeqeq($$$('Float'), $ret_or_1)) {
+        return $rb_plus(self.$to_f(), other)
+      } else {
+        return self.$__coerced__("+", other)
+      }
+    }, 1);
     
-    Opal.def(self, '$==', $Rational_$eq_eq$7 = function(other) {
-      var self = this, $case = nil, $ret_or_9 = nil, $ret_or_10 = nil;
+    $def(self, '$-', function $Rational_$minus$4(other) {
+      var self = this, $ret_or_1 = nil, num = nil, den = nil;
 
-      return (function() {$case = other;
-      if ($$($nesting, 'Rational')['$===']($case)) {if ($truthy(($ret_or_9 = self.num['$=='](other.$numerator())))) {
-        return self.den['$=='](other.$denominator())
-      } else {
-        return $ret_or_9
-      }}
-      else if ($$($nesting, 'Integer')['$===']($case)) {if ($truthy(($ret_or_10 = self.num['$=='](other)))) {
-        return self.den['$=='](1)
-      } else {
-        return $ret_or_10
-      }}
-      else if ($$($nesting, 'Float')['$===']($case)) {return self.$to_f()['$=='](other)}
-      else {return other['$=='](self)}})()
-    }, $Rational_$eq_eq$7.$$arity = 1);
-    
-    Opal.def(self, '$<=>', $Rational_$lt_eq_gt$8 = function(other) {
-      var self = this, $case = nil;
-
-      return (function() {$case = other;
-      if ($$($nesting, 'Rational')['$===']($case)) {return $rb_minus($rb_times(self.num, other.$denominator()), $rb_times(self.den, other.$numerator()))['$<=>'](0)}
-      else if ($$($nesting, 'Integer')['$===']($case)) {return $rb_minus(self.num, $rb_times(self.den, other))['$<=>'](0)}
-      else if ($$($nesting, 'Float')['$===']($case)) {return self.$to_f()['$<=>'](other)}
-      else {return self.$__coerced__("<=>", other)}})()
-    }, $Rational_$lt_eq_gt$8.$$arity = 1);
-    
-    Opal.def(self, '$+', $Rational_$plus$9 = function(other) {
-      var self = this, $case = nil, num = nil, den = nil;
-
-      return (function() {$case = other;
-      if ($$($nesting, 'Rational')['$===']($case)) {
-      num = $rb_plus($rb_times(self.num, other.$denominator()), $rb_times(self.den, other.$numerator()));
-      den = $rb_times(self.den, other.$denominator());
-      return self.$Rational(num, den);}
-      else if ($$($nesting, 'Integer')['$===']($case)) {return self.$Rational($rb_plus(self.num, $rb_times(other, self.den)), self.den)}
-      else if ($$($nesting, 'Float')['$===']($case)) {return $rb_plus(self.$to_f(), other)}
-      else {return self.$__coerced__("+", other)}})()
-    }, $Rational_$plus$9.$$arity = 1);
-    
-    Opal.def(self, '$-', $Rational_$minus$10 = function(other) {
-      var self = this, $case = nil, num = nil, den = nil;
-
-      return (function() {$case = other;
-      if ($$($nesting, 'Rational')['$===']($case)) {
-      num = $rb_minus($rb_times(self.num, other.$denominator()), $rb_times(self.den, other.$numerator()));
-      den = $rb_times(self.den, other.$denominator());
-      return self.$Rational(num, den);}
-      else if ($$($nesting, 'Integer')['$===']($case)) {return self.$Rational($rb_minus(self.num, $rb_times(other, self.den)), self.den)}
-      else if ($$($nesting, 'Float')['$===']($case)) {return $rb_minus(self.$to_f(), other)}
-      else {return self.$__coerced__("-", other)}})()
-    }, $Rational_$minus$10.$$arity = 1);
-    
-    Opal.def(self, '$*', $Rational_$$11 = function(other) {
-      var self = this, $case = nil, num = nil, den = nil;
-
-      return (function() {$case = other;
-      if ($$($nesting, 'Rational')['$===']($case)) {
-      num = $rb_times(self.num, other.$numerator());
-      den = $rb_times(self.den, other.$denominator());
-      return self.$Rational(num, den);}
-      else if ($$($nesting, 'Integer')['$===']($case)) {return self.$Rational($rb_times(self.num, other), self.den)}
-      else if ($$($nesting, 'Float')['$===']($case)) {return $rb_times(self.$to_f(), other)}
-      else {return self.$__coerced__("*", other)}})()
-    }, $Rational_$$11.$$arity = 1);
-    
-    Opal.def(self, '$/', $Rational_$slash$12 = function(other) {
-      var self = this, $case = nil, num = nil, den = nil;
-
-      return (function() {$case = other;
-      if ($$($nesting, 'Rational')['$===']($case)) {
-      num = $rb_times(self.num, other.$denominator());
-      den = $rb_times(self.den, other.$numerator());
-      return self.$Rational(num, den);}
-      else if ($$($nesting, 'Integer')['$===']($case)) {if (other['$=='](0)) {
-        return $rb_divide(self.$to_f(), 0.0)
-      } else {
-        return self.$Rational(self.num, $rb_times(self.den, other))
-      }}
-      else if ($$($nesting, 'Float')['$===']($case)) {return $rb_divide(self.$to_f(), other)}
-      else {return self.$__coerced__("/", other)}})()
-    }, $Rational_$slash$12.$$arity = 1);
-    
-    Opal.def(self, '$**', $Rational_$$$13 = function(other) {
-      var self = this, $case = nil, $ret_or_11 = nil, $ret_or_12 = nil;
-
-      return (function() {$case = other;
-      if ($$($nesting, 'Integer')['$===']($case)) {if ($truthy((function() {if ($truthy(($ret_or_11 = self['$=='](0)))) {
-        return $rb_lt(other, 0)
+      if ($eqeqeq($$$('Rational'), ($ret_or_1 = other))) {
+        
+        num = $rb_minus($rb_times(self.num, other.$denominator()), $rb_times(self.den, other.$numerator()));
+        den = $rb_times(self.den, other.$denominator());
+        return $Kernel.$Rational(num, den);
+      } else if ($eqeqeq($$$('Integer'), $ret_or_1)) {
+        return $Kernel.$Rational($rb_minus(self.num, $rb_times(other, self.den)), self.den)
+      } else if ($eqeqeq($$$('Float'), $ret_or_1)) {
+        return $rb_minus(self.$to_f(), other)
       } else {
-        return $ret_or_11
-      }; return nil; })())) {
-        return $$$($$($nesting, 'Float'), 'INFINITY')
-      } else if ($truthy($rb_gt(other, 0))) {
-        return self.$Rational(self.num['$**'](other), self.den['$**'](other))
-      } else if ($truthy($rb_lt(other, 0))) {
-        return self.$Rational(self.den['$**'](other['$-@']()), self.num['$**'](other['$-@']()))
+        return self.$__coerced__("-", other)
+      }
+    }, 1);
+    
+    $def(self, '$*', function $Rational_$$5(other) {
+      var self = this, $ret_or_1 = nil, num = nil, den = nil;
+
+      if ($eqeqeq($$$('Rational'), ($ret_or_1 = other))) {
+        
+        num = $rb_times(self.num, other.$numerator());
+        den = $rb_times(self.den, other.$denominator());
+        return $Kernel.$Rational(num, den);
+      } else if ($eqeqeq($$$('Integer'), $ret_or_1)) {
+        return $Kernel.$Rational($rb_times(self.num, other), self.den)
+      } else if ($eqeqeq($$$('Float'), $ret_or_1)) {
+        return $rb_times(self.$to_f(), other)
       } else {
-        return self.$Rational(1, 1)
-      }}
-      else if ($$($nesting, 'Float')['$===']($case)) {return self.$to_f()['$**'](other)}
-      else if ($$($nesting, 'Rational')['$===']($case)) {if (other['$=='](0)) {
-        return self.$Rational(1, 1)
-      } else if (other.$denominator()['$=='](1)) {
-        if ($truthy($rb_lt(other, 0))) {
-          return self.$Rational(self.den['$**'](other.$numerator().$abs()), self.num['$**'](other.$numerator().$abs()))
+        return self.$__coerced__("*", other)
+      }
+    }, 1);
+    
+    $def(self, '$/', function $Rational_$slash$6(other) {
+      var self = this, $ret_or_1 = nil, num = nil, den = nil;
+
+      if ($eqeqeq($$$('Rational'), ($ret_or_1 = other))) {
+        
+        num = $rb_times(self.num, other.$denominator());
+        den = $rb_times(self.den, other.$numerator());
+        return $Kernel.$Rational(num, den);
+      } else if ($eqeqeq($$$('Integer'), $ret_or_1)) {
+        if ($eqeq(other, 0)) {
+          return $rb_divide(self.$to_f(), 0.0)
         } else {
-          return self.$Rational(self.num['$**'](other.$numerator()), self.den['$**'](other.$numerator()))
+          return $Kernel.$Rational(self.num, $rb_times(self.den, other))
         }
-      } else if ($truthy((function() {if ($truthy(($ret_or_12 = self['$=='](0)))) {
-        return $rb_lt(other, 0)
-      } else {
-        return $ret_or_12
-      }; return nil; })())) {
-        return self.$raise($$($nesting, 'ZeroDivisionError'), "divided by 0")
+      } else if ($eqeqeq($$$('Float'), $ret_or_1)) {
+        return $rb_divide(self.$to_f(), other)
       } else {
+        return self.$__coerced__("/", other)
+      }
+    }, 1);
+    
+    $def(self, '$**', function $Rational_$$$7(other) {
+      var self = this, $ret_or_1 = nil;
+
+      if ($eqeqeq($$$('Integer'), ($ret_or_1 = other))) {
+        if (($eqeq(self, 0) && ($truthy($rb_lt(other, 0))))) {
+          return $$$($$$('Float'), 'INFINITY')
+        } else if ($truthy($rb_gt(other, 0))) {
+          return $Kernel.$Rational(self.num['$**'](other), self.den['$**'](other))
+        } else if ($truthy($rb_lt(other, 0))) {
+          return $Kernel.$Rational(self.den['$**'](other['$-@']()), self.num['$**'](other['$-@']()))
+        } else {
+          return $Kernel.$Rational(1, 1)
+        }
+      } else if ($eqeqeq($$$('Float'), $ret_or_1)) {
         return self.$to_f()['$**'](other)
-      }}
-      else {return self.$__coerced__("**", other)}})()
-    }, $Rational_$$$13.$$arity = 1);
+      } else if ($eqeqeq($$$('Rational'), $ret_or_1)) {
+        if ($eqeq(other, 0)) {
+          return $Kernel.$Rational(1, 1)
+        } else if ($eqeq(other.$denominator(), 1)) {
+          if ($truthy($rb_lt(other, 0))) {
+            return $Kernel.$Rational(self.den['$**'](other.$numerator().$abs()), self.num['$**'](other.$numerator().$abs()))
+          } else {
+            return $Kernel.$Rational(self.num['$**'](other.$numerator()), self.den['$**'](other.$numerator()))
+          }
+        } else if (($eqeq(self, 0) && ($truthy($rb_lt(other, 0))))) {
+          return $Kernel.$raise($$$('ZeroDivisionError'), "divided by 0")
+        } else {
+          return self.$to_f()['$**'](other)
+        }
+      } else {
+        return self.$__coerced__("**", other)
+      }
+    }, 1);
     
-    Opal.def(self, '$abs', $Rational_abs$14 = function $$abs() {
+    $def(self, '$abs', function $$abs() {
       var self = this;
 
-      return self.$Rational(self.num.$abs(), self.den.$abs())
-    }, $Rational_abs$14.$$arity = 0);
+      return $Kernel.$Rational(self.num.$abs(), self.den.$abs())
+    }, 0);
     
-    Opal.def(self, '$ceil', $Rational_ceil$15 = function $$ceil(precision) {
+    $def(self, '$ceil', function $$ceil(precision) {
       var self = this;
 
       
       
-      if (precision == null) {
-        precision = 0;
-      };
-      if (precision['$=='](0)) {
+      if (precision == null) precision = 0;;
+      if ($eqeq(precision, 0)) {
         return $rb_divide(self.num['$-@'](), self.den)['$-@']().$ceil()
       } else {
         return self.$with_precision("ceil", precision)
       };
-    }, $Rational_ceil$15.$$arity = -1);
-    $alias(self, "divide", "/");
+    }, -1);
     
-    Opal.def(self, '$floor', $Rational_floor$16 = function $$floor(precision) {
+    $def(self, '$floor', function $$floor(precision) {
       var self = this;
 
       
       
-      if (precision == null) {
-        precision = 0;
-      };
-      if (precision['$=='](0)) {
+      if (precision == null) precision = 0;;
+      if ($eqeq(precision, 0)) {
         return $rb_divide(self.num['$-@'](), self.den)['$-@']().$floor()
       } else {
         return self.$with_precision("floor", precision)
       };
-    }, $Rational_floor$16.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$hash', $Rational_hash$17 = function $$hash() {
+    $def(self, '$hash', function $$hash() {
       var self = this;
 
-      return "" + "Rational:" + (self.num) + ":" + (self.den)
-    }, $Rational_hash$17.$$arity = 0);
+      return "Rational:" + (self.num) + ":" + (self.den)
+    }, 0);
     
-    Opal.def(self, '$inspect', $Rational_inspect$18 = function $$inspect() {
+    $def(self, '$inspect', function $$inspect() {
       var self = this;
 
-      return "" + "(" + (self) + ")"
-    }, $Rational_inspect$18.$$arity = 0);
-    $alias(self, "quo", "/");
+      return "(" + (self) + ")"
+    }, 0);
     
-    Opal.def(self, '$rationalize', $Rational_rationalize$19 = function $$rationalize(eps) {
+    $def(self, '$rationalize', function $$rationalize(eps) {
       var self = this;
 
       
       ;
       
       if (arguments.length > 1) {
-        self.$raise($$($nesting, 'ArgumentError'), "" + "wrong number of arguments (" + (arguments.length) + " for 0..1)");
+        $Kernel.$raise($$$('ArgumentError'), "wrong number of arguments (" + (arguments.length) + " for 0..1)");
       }
 
       if (eps == null) {
@@ -22419,26 +22066,25 @@ Opal.modules["corelib/rational"] = function(Opal) {
         q1 = q2;
       }
 
-      return self.$Rational(c * p1 + p0, c * q1 + q0);
+      return $Kernel.$Rational(c * p1 + p0, c * q1 + q0);
     ;
-    }, $Rational_rationalize$19.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$round', $Rational_round$20 = function $$round(precision) {
+    $def(self, '$round', function $$round(precision) {
       var self = this, num = nil, den = nil, approx = nil;
 
       
       
-      if (precision == null) {
-        precision = 0;
-      };
-      if (precision['$=='](0)) {
-      } else {
+      if (precision == null) precision = 0;;
+      if (!$eqeq(precision, 0)) {
         return self.$with_precision("round", precision)
       };
-      if (self.num['$=='](0)) {
-        return 0};
-      if (self.den['$=='](1)) {
-        return self.num};
+      if ($eqeq(self.num, 0)) {
+        return 0
+      };
+      if ($eqeq(self.den, 1)) {
+        return self.num
+      };
       num = $rb_plus($rb_times(self.num.$abs(), 2), self.den);
       den = $rb_times(self.den, 2);
       approx = $rb_divide(num, den).$truncate();
@@ -22447,41 +22093,39 @@ Opal.modules["corelib/rational"] = function(Opal) {
       } else {
         return approx
       };
-    }, $Rational_round$20.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$to_f', $Rational_to_f$21 = function $$to_f() {
+    $def(self, '$to_f', function $$to_f() {
       var self = this;
 
       return $rb_divide(self.num, self.den)
-    }, $Rational_to_f$21.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_i', $Rational_to_i$22 = function $$to_i() {
+    $def(self, '$to_i', function $$to_i() {
       var self = this;
 
       return self.$truncate()
-    }, $Rational_to_i$22.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_r', $Rational_to_r$23 = function $$to_r() {
+    $def(self, '$to_r', function $$to_r() {
       var self = this;
 
       return self
-    }, $Rational_to_r$23.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_s', $Rational_to_s$24 = function $$to_s() {
+    $def(self, '$to_s', function $$to_s() {
       var self = this;
 
       return "" + (self.num) + "/" + (self.den)
-    }, $Rational_to_s$24.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$truncate', $Rational_truncate$25 = function $$truncate(precision) {
+    $def(self, '$truncate', function $$truncate(precision) {
       var self = this;
 
       
       
-      if (precision == null) {
-        precision = 0;
-      };
-      if (precision['$=='](0)) {
+      if (precision == null) precision = 0;;
+      if ($eqeq(precision, 0)) {
         if ($truthy($rb_lt(self.num, 0))) {
           return self.$ceil()
         } else {
@@ -22490,50 +22134,27 @@ Opal.modules["corelib/rational"] = function(Opal) {
       } else {
         return self.$with_precision("truncate", precision)
       };
-    }, $Rational_truncate$25.$$arity = -1);
-    return (Opal.def(self, '$with_precision', $Rational_with_precision$26 = function $$with_precision(method, precision) {
+    }, -1);
+    
+    $def(self, '$with_precision', function $$with_precision(method, precision) {
       var self = this, p = nil, s = nil;
 
       
-      if ($truthy($$($nesting, 'Integer')['$==='](precision))) {
-      } else {
-        self.$raise($$($nesting, 'TypeError'), "not an Integer")
+      if (!$eqeqeq($$$('Integer'), precision)) {
+        $Kernel.$raise($$$('TypeError'), "not an Integer")
       };
       p = (10)['$**'](precision);
       s = $rb_times(self, p);
       if ($truthy($rb_lt(precision, 1))) {
         return $rb_divide(s.$send(method), p).$to_i()
       } else {
-        return self.$Rational(s.$send(method), p)
+        return $Kernel.$Rational(s.$send(method), p)
       };
-    }, $Rational_with_precision$26.$$arity = 2), nil) && 'with_precision';
-  })($nesting[0], $$($nesting, 'Numeric'), $nesting);
-  (function($base, $parent_nesting) {
-    var self = $module($base, 'Kernel');
-
-    var $nesting = [self].concat($parent_nesting), $Kernel_Rational$27;
-
-    return (Opal.def(self, '$Rational', $Kernel_Rational$27 = function $$Rational(numerator, denominator) {
-      var self = this;
-
-      
+    }, 2);
+    $defs(self, '$from_string', function $$from_string(string) {
       
-      if (denominator == null) {
-        denominator = 1;
-      };
-      return $$($nesting, 'Rational').$convert(numerator, denominator);
-    }, $Kernel_Rational$27.$$arity = -2), nil) && 'Rational'
-  })($nesting[0], $nesting);
-  return (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'String');
-
-    var $nesting = [self].concat($parent_nesting), $String_to_r$28;
-
-    return (Opal.def(self, '$to_r', $String_to_r$28 = function $$to_r() {
-      var self = this;
-
       
-      var str = self.trimLeft(),
+      var str = string.trimLeft(),
           re = /^[+-]?[\d_]+(\.[\d_]+)?/,
           match = str.match(re),
           numerator, denominator;
@@ -22558,78 +22179,60 @@ Opal.modules["corelib/rational"] = function(Opal) {
 
           if (isFloat()) {
             denominator = parseFloat(cutFloat());
-            return self.$Rational(numerator, denominator);
+            return $Kernel.$Rational(numerator, denominator);
           } else {
-            return self.$Rational(numerator, 1);
+            return $Kernel.$Rational(numerator, 1);
           }
         } else {
-          return self.$Rational(numerator, 1);
+          return $Kernel.$Rational(numerator, 1);
         }
       } else {
-        return self.$Rational(0, 1);
+        return $Kernel.$Rational(0, 1);
       }
     
-    }, $String_to_r$28.$$arity = 0), nil) && 'to_r'
-  })($nesting[0], null, $nesting);
+    }, 1);
+    $alias(self, "divide", "/");
+    return $alias(self, "quo", "/");
+  })('::', $$$('Numeric'));
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/time"] = function(Opal) {
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_divide(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs / rhs : lhs['$/'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_le(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs <= rhs : lhs['$<='](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $slice = Opal.slice, $klass = Opal.klass, $alias = Opal.alias, $truthy = Opal.truthy, $range = Opal.range;
+Opal.modules["corelib/time"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $slice = Opal.slice, $klass = Opal.klass, $Kernel = Opal.Kernel, $Opal = Opal.Opal, $defs = Opal.defs, $eqeqeq = Opal.eqeqeq, $def = Opal.def, $truthy = Opal.truthy, $rb_gt = Opal.rb_gt, $rb_lt = Opal.rb_lt, $send = Opal.send, $rb_plus = Opal.rb_plus, $rb_divide = Opal.rb_divide, $rb_minus = Opal.rb_minus, $range = Opal.range, $neqeq = Opal.neqeq, $rb_le = Opal.rb_le, $eqeq = Opal.eqeq, $alias = Opal.alias;
 
-  Opal.add_stubs(['$require', '$include', '$===', '$raise', '$coerce_to!', '$respond_to?', '$to_str', '$to_i', '$new', '$<=>', '$to_f', '$nil?', '$>', '$<', '$strftime', '$year', '$month', '$day', '$+', '$round', '$/', '$-', '$copy_instance_variables', '$initialize_dup', '$is_a?', '$zero?', '$wday', '$utc?', '$mon', '$yday', '$hour', '$min', '$sec', '$rjust', '$ljust', '$zone', '$to_s', '$[]', '$cweek_cyear', '$isdst', '$<=', '$!=', '$==', '$ceil']);
+  Opal.add_stubs('require,include,===,raise,coerce_to!,respond_to?,to_str,to_i,_parse_offset,new,<=>,to_f,nil?,>,<,strftime,each,define_method,year,month,day,+,round,/,-,copy_instance_variables,initialize_dup,is_a?,zero?,wday,utc?,mon,yday,hour,min,sec,rjust,ljust,zone,to_s,[],cweek_cyear,jd,to_date,format,isdst,!=,<=,==,ceil');
   
   self.$require("corelib/comparable");
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Time');
 
-    var $nesting = [self].concat($parent_nesting), $Time_at$1, $Time_new$2, $Time_local$3, $Time_gm$4, $Time_now$5, $Time_$plus$6, $Time_$minus$7, $Time_$lt_eq_gt$8, $Time_$eq_eq$9, $Time_asctime$10, $Time_day$11, $Time_yday$12, $Time_isdst$13, $Time_dup$14, $Time_eql$ques$15, $Time_friday$ques$16, $Time_hash$17, $Time_hour$18, $Time_inspect$19, $Time_min$20, $Time_mon$21, $Time_monday$ques$22, $Time_saturday$ques$23, $Time_sec$24, $Time_succ$25, $Time_usec$26, $Time_zone$27, $Time_getgm$28, $Time_gmtime$29, $Time_gmt$ques$30, $Time_gmt_offset$31, $Time_strftime$32, $Time_sunday$ques$33, $Time_thursday$ques$34, $Time_to_a$35, $Time_to_f$36, $Time_to_i$37, $Time_tuesday$ques$38, $Time_wday$39, $Time_wednesday$ques$40, $Time_year$41, $Time_cweek_cyear$42;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
-    self.$include($$($nesting, 'Comparable'));
+    self.$include($$$('Comparable'));
     
     var days_of_week = ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"],
         short_days   = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"],
         short_months = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"],
         long_months  = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"];
   ;
-    Opal.defs(self, '$at', $Time_at$1 = function $$at(seconds, frac) {
-      var self = this;
-
+    $defs(self, '$at', function $$at(seconds, frac) {
+      
       
       ;
       
       var result;
 
-      if ($$($nesting, 'Time')['$==='](seconds)) {
+      if ($$$('Time')['$==='](seconds)) {
         if (frac !== undefined) {
-          self.$raise($$($nesting, 'TypeError'), "can't convert Time into an exact number")
+          $Kernel.$raise($$$('TypeError'), "can't convert Time into an exact number")
         }
         result = new Date(seconds.getTime());
-        result.is_utc = seconds.is_utc;
+        result.timezone = seconds.timezone;
         return result;
       }
 
       if (!seconds.$$is_number) {
-        seconds = $$($nesting, 'Opal')['$coerce_to!'](seconds, $$($nesting, 'Integer'), "to_int");
+        seconds = $Opal['$coerce_to!'](seconds, $$$('Integer'), "to_int");
       }
 
       if (frac === undefined) {
@@ -22637,18 +22240,18 @@ Opal.modules["corelib/time"] = function(Opal) {
       }
 
       if (!frac.$$is_number) {
-        frac = $$($nesting, 'Opal')['$coerce_to!'](frac, $$($nesting, 'Integer'), "to_int");
+        frac = $Opal['$coerce_to!'](frac, $$$('Integer'), "to_int");
       }
 
       return new Date(seconds * 1000 + (frac / 1000));
     ;
-    }, $Time_at$1.$$arity = -2);
+    }, -2);
     
     function time_params(year, month, day, hour, min, sec) {
       if (year.$$is_string) {
         year = parseInt(year, 10);
       } else {
-        year = $$($nesting, 'Opal')['$coerce_to!'](year, $$($nesting, 'Integer'), "to_int");
+        year = $Opal['$coerce_to!'](year, $$$('Integer'), "to_int");
       }
 
       if (month === nil) {
@@ -22672,12 +22275,12 @@ Opal.modules["corelib/time"] = function(Opal) {
           default: month = (month).$to_i();
           }
         } else {
-          month = $$($nesting, 'Opal')['$coerce_to!'](month, $$($nesting, 'Integer'), "to_int");
+          month = $Opal['$coerce_to!'](month, $$$('Integer'), "to_int");
         }
       }
 
       if (month < 1 || month > 12) {
-        self.$raise($$($nesting, 'ArgumentError'), "" + "month out of range: " + (month))
+        $Kernel.$raise($$$('ArgumentError'), "month out of range: " + (month))
       }
       month = month - 1;
 
@@ -22686,11 +22289,11 @@ Opal.modules["corelib/time"] = function(Opal) {
       } else if (day.$$is_string) {
         day = parseInt(day, 10);
       } else {
-        day = $$($nesting, 'Opal')['$coerce_to!'](day, $$($nesting, 'Integer'), "to_int");
+        day = $Opal['$coerce_to!'](day, $$$('Integer'), "to_int");
       }
 
       if (day < 1 || day > 31) {
-        self.$raise($$($nesting, 'ArgumentError'), "" + "day out of range: " + (day))
+        $Kernel.$raise($$$('ArgumentError'), "day out of range: " + (day))
       }
 
       if (hour === nil) {
@@ -22698,11 +22301,11 @@ Opal.modules["corelib/time"] = function(Opal) {
       } else if (hour.$$is_string) {
         hour = parseInt(hour, 10);
       } else {
-        hour = $$($nesting, 'Opal')['$coerce_to!'](hour, $$($nesting, 'Integer'), "to_int");
+        hour = $Opal['$coerce_to!'](hour, $$$('Integer'), "to_int");
       }
 
       if (hour < 0 || hour > 24) {
-        self.$raise($$($nesting, 'ArgumentError'), "" + "hour out of range: " + (hour))
+        $Kernel.$raise($$$('ArgumentError'), "hour out of range: " + (hour))
       }
 
       if (min === nil) {
@@ -22710,11 +22313,11 @@ Opal.modules["corelib/time"] = function(Opal) {
       } else if (min.$$is_string) {
         min = parseInt(min, 10);
       } else {
-        min = $$($nesting, 'Opal')['$coerce_to!'](min, $$($nesting, 'Integer'), "to_int");
+        min = $Opal['$coerce_to!'](min, $$$('Integer'), "to_int");
       }
 
       if (min < 0 || min > 59) {
-        self.$raise($$($nesting, 'ArgumentError'), "" + "min out of range: " + (min))
+        $Kernel.$raise($$$('ArgumentError'), "min out of range: " + (min))
       }
 
       if (sec === nil) {
@@ -22723,57 +22326,41 @@ Opal.modules["corelib/time"] = function(Opal) {
         if (sec.$$is_string) {
           sec = parseInt(sec, 10);
         } else {
-          sec = $$($nesting, 'Opal')['$coerce_to!'](sec, $$($nesting, 'Integer'), "to_int");
+          sec = $Opal['$coerce_to!'](sec, $$$('Integer'), "to_int");
         }
       }
 
       if (sec < 0 || sec > 60) {
-        self.$raise($$($nesting, 'ArgumentError'), "" + "sec out of range: " + (sec))
+        $Kernel.$raise($$$('ArgumentError'), "sec out of range: " + (sec))
       }
 
       return [year, month, day, hour, min, sec];
     }
   ;
-    Opal.defs(self, '$new', $Time_new$2 = function(year, month, day, hour, min, sec, utc_offset) {
+    $defs(self, '$new', function $Time_new$1(year, month, day, hour, min, sec, utc_offset) {
       var self = this;
 
       
       ;
       
-      if (month == null) {
-        month = nil;
-      };
+      if (month == null) month = nil;;
       
-      if (day == null) {
-        day = nil;
-      };
+      if (day == null) day = nil;;
       
-      if (hour == null) {
-        hour = nil;
-      };
+      if (hour == null) hour = nil;;
       
-      if (min == null) {
-        min = nil;
-      };
+      if (min == null) min = nil;;
       
-      if (sec == null) {
-        sec = nil;
-      };
+      if (sec == null) sec = nil;;
       
-      if (utc_offset == null) {
-        utc_offset = nil;
-      };
+      if (utc_offset == null) utc_offset = nil;;
       
-      var args, result;
+      var args, result, timezone;
 
       if (year === undefined) {
         return new Date();
       }
 
-      if (utc_offset !== nil) {
-        self.$raise($$($nesting, 'ArgumentError'), "Opal does not support explicitly specifying UTC offset for Time")
-      }
-
       args  = time_params(year, month, day, hour, min, sec);
       year  = args[0];
       month = args[1];
@@ -22786,49 +22373,70 @@ Opal.modules["corelib/time"] = function(Opal) {
       if (year < 100) {
         result.setFullYear(year);
       }
+
+      if (utc_offset !== nil) {
+        timezone = self.$_parse_offset(utc_offset);
+      }
+
+      if (timezone != null) {
+        result = new Date(result.getTime() - timezone * 3600000 - result.getTimezoneOffset() * 60000);
+        result.timezone = timezone;
+      }
+
       return result;
     ;
-    }, $Time_new$2.$$arity = -1);
-    Opal.defs(self, '$local', $Time_local$3 = function $$local(year, month, day, hour, min, sec, millisecond, _dummy1, _dummy2, _dummy3) {
-      var self = this;
+    }, -1);
+    $defs(self, '$_parse_offset', function $$_parse_offset(utc_offset) {
+      
+      
+      var timezone;
+      if (utc_offset.$$is_string) {
+        if (utc_offset == 'UTC') {
+          timezone = 0;
+        }
+        else if(/^[+-]\d\d:[0-5]\d$/.test(utc_offset)) {
+          var sign, hours, minutes;
+          sign = utc_offset[0];
+          hours = +(utc_offset[1] + utc_offset[2]);
+          minutes = +(utc_offset[4] + utc_offset[5]);
 
+          timezone = (sign == '-' ? -1 : 1) * (hours + minutes / 60);
+        }
+        else {
+          // Unsupported: "A".."I","K".."Z"
+          $Kernel.$raise($$$('ArgumentError'), "\"+HH:MM\", \"-HH:MM\", \"UTC\" expected for utc_offset: " + (utc_offset))
+        }
+      }
+      else if (utc_offset.$$is_number) {
+        timezone = utc_offset / 3600;
+      }
+      else {
+        $Kernel.$raise($$$('ArgumentError'), "Opal doesn't support other types for a timezone argument than Integer and String")
+      }
+      return timezone;
+    
+    }, 1);
+    $defs(self, '$local', function $$local(year, month, day, hour, min, sec, millisecond, _dummy1, _dummy2, _dummy3) {
       
       
-      if (month == null) {
-        month = nil;
-      };
       
-      if (day == null) {
-        day = nil;
-      };
+      if (month == null) month = nil;;
       
-      if (hour == null) {
-        hour = nil;
-      };
+      if (day == null) day = nil;;
       
-      if (min == null) {
-        min = nil;
-      };
+      if (hour == null) hour = nil;;
       
-      if (sec == null) {
-        sec = nil;
-      };
+      if (min == null) min = nil;;
       
-      if (millisecond == null) {
-        millisecond = nil;
-      };
+      if (sec == null) sec = nil;;
       
-      if (_dummy1 == null) {
-        _dummy1 = nil;
-      };
+      if (millisecond == null) millisecond = nil;;
       
-      if (_dummy2 == null) {
-        _dummy2 = nil;
-      };
+      if (_dummy1 == null) _dummy1 = nil;;
       
-      if (_dummy3 == null) {
-        _dummy3 = nil;
-      };
+      if (_dummy2 == null) _dummy2 = nil;;
+      
+      if (_dummy3 == null) _dummy3 = nil;;
       
       var args, result;
 
@@ -22856,47 +22464,28 @@ Opal.modules["corelib/time"] = function(Opal) {
       }
       return result;
     ;
-    }, $Time_local$3.$$arity = -2);
-    Opal.defs(self, '$gm', $Time_gm$4 = function $$gm(year, month, day, hour, min, sec, millisecond, _dummy1, _dummy2, _dummy3) {
-      var self = this;
-
+    }, -2);
+    $defs(self, '$gm', function $$gm(year, month, day, hour, min, sec, millisecond, _dummy1, _dummy2, _dummy3) {
       
       
-      if (month == null) {
-        month = nil;
-      };
       
-      if (day == null) {
-        day = nil;
-      };
+      if (month == null) month = nil;;
       
-      if (hour == null) {
-        hour = nil;
-      };
+      if (day == null) day = nil;;
       
-      if (min == null) {
-        min = nil;
-      };
+      if (hour == null) hour = nil;;
       
-      if (sec == null) {
-        sec = nil;
-      };
+      if (min == null) min = nil;;
       
-      if (millisecond == null) {
-        millisecond = nil;
-      };
+      if (sec == null) sec = nil;;
       
-      if (_dummy1 == null) {
-        _dummy1 = nil;
-      };
+      if (millisecond == null) millisecond = nil;;
       
-      if (_dummy2 == null) {
-        _dummy2 = nil;
-      };
+      if (_dummy1 == null) _dummy1 = nil;;
       
-      if (_dummy3 == null) {
-        _dummy3 = nil;
-      };
+      if (_dummy2 == null) _dummy2 = nil;;
+      
+      if (_dummy3 == null) _dummy3 = nil;;
       
       var args, result;
 
@@ -22922,59 +22511,54 @@ Opal.modules["corelib/time"] = function(Opal) {
       if (year < 100) {
         result.setUTCFullYear(year);
       }
-      result.is_utc = true;
+      result.timezone = 0;
       return result;
     ;
-    }, $Time_gm$4.$$arity = -2);
-    (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
-      
-      $alias(self, "mktime", "local");
-      return $alias(self, "utc", "gm");
-    })(Opal.get_singleton_class(self), $nesting);
-    Opal.defs(self, '$now', $Time_now$5 = function $$now() {
+    }, -2);
+    $defs(self, '$now', function $$now() {
       var self = this;
 
       return self.$new()
-    }, $Time_now$5.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$+', $Time_$plus$6 = function(other) {
+    $def(self, '$+', function $Time_$plus$2(other) {
       var self = this;
 
       
-      if ($truthy($$($nesting, 'Time')['$==='](other))) {
-        self.$raise($$($nesting, 'TypeError'), "time + time?")};
+      if ($eqeqeq($$$('Time'), other)) {
+        $Kernel.$raise($$$('TypeError'), "time + time?")
+      };
       
       if (!other.$$is_number) {
-        other = $$($nesting, 'Opal')['$coerce_to!'](other, $$($nesting, 'Integer'), "to_int");
+        other = $Opal['$coerce_to!'](other, $$$('Integer'), "to_int");
       }
       var result = new Date(self.getTime() + (other * 1000));
-      result.is_utc = self.is_utc;
+      result.timezone = self.timezone;
       return result;
     ;
-    }, $Time_$plus$6.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$-', $Time_$minus$7 = function(other) {
+    $def(self, '$-', function $Time_$minus$3(other) {
       var self = this;
 
       
-      if ($truthy($$($nesting, 'Time')['$==='](other))) {
-        return (self.getTime() - other.getTime()) / 1000};
+      if ($eqeqeq($$$('Time'), other)) {
+        return (self.getTime() - other.getTime()) / 1000
+      };
       
       if (!other.$$is_number) {
-        other = $$($nesting, 'Opal')['$coerce_to!'](other, $$($nesting, 'Integer'), "to_int");
+        other = $Opal['$coerce_to!'](other, $$$('Integer'), "to_int");
       }
       var result = new Date(self.getTime() - (other * 1000));
-      result.is_utc = self.is_utc;
+      result.timezone = self.timezone;
       return result;
     ;
-    }, $Time_$minus$7.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$<=>', $Time_$lt_eq_gt$8 = function(other) {
+    $def(self, '$<=>', function $Time_$lt_eq_gt$4(other) {
       var self = this, r = nil;
 
-      if ($truthy($$($nesting, 'Time')['$==='](other))) {
+      if ($eqeqeq($$$('Time'), other)) {
         return self.$to_f()['$<=>'](other.$to_f())
       } else {
         
@@ -22989,42 +22573,53 @@ Opal.modules["corelib/time"] = function(Opal) {
           return 0
         };
       }
-    }, $Time_$lt_eq_gt$8.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$==', $Time_$eq_eq$9 = function(other) {
+    $def(self, '$==', function $Time_$eq_eq$5(other) {
       var self = this, $ret_or_1 = nil;
 
-      if ($truthy(($ret_or_1 = $$($nesting, 'Time')['$==='](other)))) {
+      if ($truthy(($ret_or_1 = $$$('Time')['$==='](other)))) {
         return self.$to_f() === other.$to_f()
       } else {
         return $ret_or_1
       }
-    }, $Time_$eq_eq$9.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$asctime', $Time_asctime$10 = function $$asctime() {
+    $def(self, '$asctime', function $$asctime() {
       var self = this;
 
       return self.$strftime("%a %b %e %H:%M:%S %Y")
-    }, $Time_asctime$10.$$arity = 0);
-    $alias(self, "ctime", "asctime");
-    
-    Opal.def(self, '$day', $Time_day$11 = function $$day() {
-      var self = this;
+    }, 0);
+    $send([["year", "getFullYear", "getUTCFullYear"], ["mon", "getMonth", "getUTCMonth", 1], ["wday", "getDay", "getUTCDay"], ["day", "getDate", "getUTCDate"], ["hour", "getHours", "getUTCHours"], ["min", "getMinutes", "getUTCMinutes"], ["sec", "getSeconds", "getUTCSeconds"]], 'each', [], function $Time$6(method, getter, utcgetter, difference){var self = $Time$6.$$s == null ? this : $Time$6.$$s;
+
+      
+      
+      if (method == null) method = nil;;
+      
+      if (getter == null) getter = nil;;
+      
+      if (utcgetter == null) utcgetter = nil;;
+      
+      if (difference == null) difference = 0;;
+      return $send(self, 'define_method', [method], function $$7(){var self = $$7.$$s == null ? this : $$7.$$s;
 
-      return self.is_utc ? self.getUTCDate() : self.getDate();
-    }, $Time_day$11.$$arity = 0);
+        
+        return difference + ((self.timezone != null) ?
+          (new Date(self.getTime() + self.timezone * 3600000))[utcgetter]() :
+          self[getter]())
+      }, {$$arity: 0, $$s: self});}, {$$arity: -4, $$s: self});
     
-    Opal.def(self, '$yday', $Time_yday$12 = function $$yday() {
+    $def(self, '$yday', function $$yday() {
       var self = this, start_of_year = nil, start_of_day = nil, one_day = nil;
 
       
-      start_of_year = $$($nesting, 'Time').$new(self.$year()).$to_i();
-      start_of_day = $$($nesting, 'Time').$new(self.$year(), self.$month(), self.$day()).$to_i();
+      start_of_year = $$('Time').$new(self.$year()).$to_i();
+      start_of_day = $$('Time').$new(self.$year(), self.$month(), self.$day()).$to_i();
       one_day = 86400;
       return $rb_plus($rb_divide($rb_minus(start_of_day, start_of_year), one_day).$round(), 1);
-    }, $Time_yday$12.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$isdst', $Time_isdst$13 = function $$isdst() {
+    $def(self, '$isdst', function $$isdst() {
       var self = this;
 
       
@@ -23032,10 +22627,9 @@ Opal.modules["corelib/time"] = function(Opal) {
           jul = new Date(self.getFullYear(), 6, 1);
       return self.getTimezoneOffset() < Math.max(jan.getTimezoneOffset(), jul.getTimezoneOffset());
     
-    }, $Time_isdst$13.$$arity = 0);
-    $alias(self, "dst?", "isdst");
+    }, 0);
     
-    Opal.def(self, '$dup', $Time_dup$14 = function $$dup() {
+    $def(self, '$dup', function $$dup() {
       var self = this, copy = nil;
 
       
@@ -23043,37 +22637,35 @@ Opal.modules["corelib/time"] = function(Opal) {
       copy.$copy_instance_variables(self);
       copy.$initialize_dup(self);
       return copy;
-    }, $Time_dup$14.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$eql?', $Time_eql$ques$15 = function(other) {
-      var self = this, $ret_or_2 = nil;
+    $def(self, '$eql?', function $Time_eql$ques$8(other) {
+      var self = this, $ret_or_1 = nil;
 
-      if ($truthy(($ret_or_2 = other['$is_a?']($$($nesting, 'Time'))))) {
+      if ($truthy(($ret_or_1 = other['$is_a?']($$$('Time'))))) {
         return self['$<=>'](other)['$zero?']()
       } else {
-        return $ret_or_2
+        return $ret_or_1
       }
-    }, $Time_eql$ques$15.$$arity = 1);
-    
-    Opal.def(self, '$friday?', $Time_friday$ques$16 = function() {
-      var self = this;
+    }, 1);
+    $send([["sunday?", 0], ["monday?", 1], ["tuesday?", 2], ["wednesday?", 3], ["thursday?", 4], ["friday?", 5], ["saturday?", 6]], 'each', [], function $Time$9(method, weekday){var self = $Time$9.$$s == null ? this : $Time$9.$$s;
 
-      return self.$wday() == 5
-    }, $Time_friday$ques$16.$$arity = 0);
-    
-    Opal.def(self, '$hash', $Time_hash$17 = function $$hash() {
-      var self = this;
+      
+      
+      if (method == null) method = nil;;
+      
+      if (weekday == null) weekday = nil;;
+      return $send(self, 'define_method', [method], function $$10(){var self = $$10.$$s == null ? this : $$10.$$s;
 
-      return 'Time:' + self.getTime();
-    }, $Time_hash$17.$$arity = 0);
+        return self.$wday() === weekday}, {$$arity: 0, $$s: self});}, {$$arity: 2, $$s: self});
     
-    Opal.def(self, '$hour', $Time_hour$18 = function $$hour() {
+    $def(self, '$hash', function $$hash() {
       var self = this;
 
-      return self.is_utc ? self.getUTCHours() : self.getHours();
-    }, $Time_hour$18.$$arity = 0);
+      return 'Time:' + self.getTime();
+    }, 0);
     
-    Opal.def(self, '$inspect', $Time_inspect$19 = function $$inspect() {
+    $def(self, '$inspect', function $$inspect() {
       var self = this;
 
       if ($truthy(self['$utc?']())) {
@@ -23081,60 +22673,31 @@ Opal.modules["corelib/time"] = function(Opal) {
       } else {
         return self.$strftime("%Y-%m-%d %H:%M:%S %z")
       }
-    }, $Time_inspect$19.$$arity = 0);
-    $alias(self, "mday", "day");
-    
-    Opal.def(self, '$min', $Time_min$20 = function $$min() {
-      var self = this;
-
-      return self.is_utc ? self.getUTCMinutes() : self.getMinutes();
-    }, $Time_min$20.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$mon', $Time_mon$21 = function $$mon() {
-      var self = this;
-
-      return (self.is_utc ? self.getUTCMonth() : self.getMonth()) + 1;
-    }, $Time_mon$21.$$arity = 0);
-    
-    Opal.def(self, '$monday?', $Time_monday$ques$22 = function() {
-      var self = this;
-
-      return self.$wday() == 1
-    }, $Time_monday$ques$22.$$arity = 0);
-    $alias(self, "month", "mon");
-    
-    Opal.def(self, '$saturday?', $Time_saturday$ques$23 = function() {
-      var self = this;
-
-      return self.$wday() == 6
-    }, $Time_saturday$ques$23.$$arity = 0);
-    
-    Opal.def(self, '$sec', $Time_sec$24 = function $$sec() {
-      var self = this;
-
-      return self.is_utc ? self.getUTCSeconds() : self.getSeconds();
-    }, $Time_sec$24.$$arity = 0);
-    
-    Opal.def(self, '$succ', $Time_succ$25 = function $$succ() {
+    $def(self, '$succ', function $$succ() {
       var self = this;
 
       
       var result = new Date(self.getTime() + 1000);
-      result.is_utc = self.is_utc;
+      result.timezone = self.timezone;
       return result;
     
-    }, $Time_succ$25.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$usec', $Time_usec$26 = function $$usec() {
+    $def(self, '$usec', function $$usec() {
       var self = this;
 
       return self.getMilliseconds() * 1000;
-    }, $Time_usec$26.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$zone', $Time_zone$27 = function $$zone() {
+    $def(self, '$zone', function $$zone() {
       var self = this;
 
       
+      if (self.timezone === 0) return "UTC";
+      else if (self.timezone != null) return nil;
+
       var string = self.toString(),
           result;
 
@@ -23152,47 +22715,45 @@ Opal.modules["corelib/time"] = function(Opal) {
         return result;
       }
     
-    }, $Time_zone$27.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$getgm', $Time_getgm$28 = function $$getgm() {
+    $def(self, '$getgm', function $$getgm() {
       var self = this;
 
       
       var result = new Date(self.getTime());
-      result.is_utc = true;
+      result.timezone = 0;
       return result;
     
-    }, $Time_getgm$28.$$arity = 0);
-    $alias(self, "getutc", "getgm");
+    }, 0);
     
-    Opal.def(self, '$gmtime', $Time_gmtime$29 = function $$gmtime() {
+    $def(self, '$gmtime', function $$gmtime() {
       var self = this;
 
       
-      self.is_utc = true;
+      self.timezone = 0;
       return self;
     
-    }, $Time_gmtime$29.$$arity = 0);
-    $alias(self, "utc", "gmtime");
+    }, 0);
     
-    Opal.def(self, '$gmt?', $Time_gmt$ques$30 = function() {
+    $def(self, '$gmt?', function $Time_gmt$ques$11() {
       var self = this;
 
-      return self.is_utc === true;
-    }, $Time_gmt$ques$30.$$arity = 0);
+      return self.timezone === 0;
+    }, 0);
     
-    Opal.def(self, '$gmt_offset', $Time_gmt_offset$31 = function $$gmt_offset() {
+    $def(self, '$gmt_offset', function $$gmt_offset() {
       var self = this;
 
-      return self.is_utc ? 0 : -self.getTimezoneOffset() * 60;
-    }, $Time_gmt_offset$31.$$arity = 0);
+      return (self.timezone != null) ? self.timezone * 60 : -self.getTimezoneOffset() * 60;
+    }, 0);
     
-    Opal.def(self, '$strftime', $Time_strftime$32 = function $$strftime(format) {
+    $def(self, '$strftime', function $$strftime(format) {
       var self = this;
 
       
       return format.replace(/%([\-_#^0]*:{0,2})(\d+)?([EO]*)(.)/g, function(full, flags, width, _, conv) {
-        var result = "",
+        var result = "", jd, c, s,
             zero   = flags.indexOf('0') !== -1,
             pad    = flags.indexOf('-') === -1,
             blank  = flags.indexOf('_') !== -1,
@@ -23308,7 +22869,7 @@ Opal.modules["corelib/time"] = function(Opal) {
             break;
 
           case 'z':
-            var offset  = self.getTimezoneOffset(),
+            var offset  = (self.timezone == null) ? self.getTimezoneOffset() : (-self.timezone * 60),
                 hours   = Math.floor(Math.abs(offset) / 60),
                 minutes = Math.abs(offset) % 60;
 
@@ -23407,6 +22968,28 @@ Opal.modules["corelib/time"] = function(Opal) {
             result += self.$strftime("%H:%M:%S");
             break;
 
+          // Non-standard: JIS X 0301 date format
+          case 'J':
+            jd = self.$to_date().$jd();
+            if (jd < 2405160) {
+              result += self.$strftime("%Y-%m-%d");
+              break;
+            }
+            else if (jd < 2419614)
+              c = 'M', s = 1867;
+            else if (jd < 2424875)
+              c = 'T', s = 1911;
+            else if (jd < 2447535)
+              c = 'S', s = 1925;
+            else if (jd < 2458605)
+              c = 'H', s = 1988;
+            else
+              c = 'R', s = 2018;
+
+            result += self.$format("%c%02d", c, $rb_minus(self.$year(), s));
+            result += self.$strftime("-%m-%d");
+            break;
+
           default:
             return full;
         }
@@ -23427,145 +23010,100 @@ Opal.modules["corelib/time"] = function(Opal) {
         return result;
       });
     
-    }, $Time_strftime$32.$$arity = 1);
-    
-    Opal.def(self, '$sunday?', $Time_sunday$ques$33 = function() {
-      var self = this;
-
-      return self.$wday() == 0
-    }, $Time_sunday$ques$33.$$arity = 0);
-    
-    Opal.def(self, '$thursday?', $Time_thursday$ques$34 = function() {
-      var self = this;
-
-      return self.$wday() == 4
-    }, $Time_thursday$ques$34.$$arity = 0);
+    }, 1);
     
-    Opal.def(self, '$to_a', $Time_to_a$35 = function $$to_a() {
+    $def(self, '$to_a', function $$to_a() {
       var self = this;
 
       return [self.$sec(), self.$min(), self.$hour(), self.$day(), self.$month(), self.$year(), self.$wday(), self.$yday(), self.$isdst(), self.$zone()]
-    }, $Time_to_a$35.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_f', $Time_to_f$36 = function $$to_f() {
+    $def(self, '$to_f', function $$to_f() {
       var self = this;
 
       return self.getTime() / 1000;
-    }, $Time_to_f$36.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_i', $Time_to_i$37 = function $$to_i() {
+    $def(self, '$to_i', function $$to_i() {
       var self = this;
 
       return parseInt(self.getTime() / 1000, 10);
-    }, $Time_to_i$37.$$arity = 0);
-    $alias(self, "to_s", "inspect");
-    
-    Opal.def(self, '$tuesday?', $Time_tuesday$ques$38 = function() {
-      var self = this;
-
-      return self.$wday() == 2
-    }, $Time_tuesday$ques$38.$$arity = 0);
-    $alias(self, "tv_sec", "to_i");
-    $alias(self, "tv_usec", "usec");
-    $alias(self, "utc?", "gmt?");
-    $alias(self, "gmtoff", "gmt_offset");
-    $alias(self, "utc_offset", "gmt_offset");
-    
-    Opal.def(self, '$wday', $Time_wday$39 = function $$wday() {
-      var self = this;
-
-      return self.is_utc ? self.getUTCDay() : self.getDay();
-    }, $Time_wday$39.$$arity = 0);
-    
-    Opal.def(self, '$wednesday?', $Time_wednesday$ques$40 = function() {
-      var self = this;
-
-      return self.$wday() == 3
-    }, $Time_wednesday$ques$40.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$year', $Time_year$41 = function $$year() {
-      var self = this;
-
-      return self.is_utc ? self.getUTCFullYear() : self.getFullYear();
-    }, $Time_year$41.$$arity = 0);
-    return (Opal.def(self, '$cweek_cyear', $Time_cweek_cyear$42 = function $$cweek_cyear() {
-      var self = this, jan01 = nil, jan01_wday = nil, first_monday = nil, year = nil, $ret_or_3 = nil, offset = nil, week = nil, dec31 = nil, dec31_wday = nil, $ret_or_4 = nil;
+    $def(self, '$cweek_cyear', function $$cweek_cyear() {
+      var self = this, jan01 = nil, jan01_wday = nil, first_monday = nil, year = nil, offset = nil, week = nil, dec31 = nil, dec31_wday = nil;
 
       
-      jan01 = $$($nesting, 'Time').$new(self.$year(), 1, 1);
+      jan01 = $$$('Time').$new(self.$year(), 1, 1);
       jan01_wday = jan01.$wday();
       first_monday = 0;
       year = self.$year();
-      if ($truthy((function() {if ($truthy(($ret_or_3 = $rb_le(jan01_wday, 4)))) {
-        return jan01_wday['$!='](0)
-      } else {
-        return $ret_or_3
-      }; return nil; })())) {
+      if (($truthy($rb_le(jan01_wday, 4)) && ($neqeq(jan01_wday, 0)))) {
         offset = $rb_minus(jan01_wday, 1)
       } else {
         
         offset = $rb_minus($rb_minus(jan01_wday, 7), 1);
-        if (offset['$=='](-8)) {
-          offset = -1};
+        if ($eqeq(offset, -8)) {
+          offset = -1
+        };
       };
       week = $rb_divide($rb_plus(self.$yday(), offset), 7.0).$ceil();
       if ($truthy($rb_le(week, 0))) {
-        return $$($nesting, 'Time').$new($rb_minus(self.$year(), 1), 12, 31).$cweek_cyear()
-      } else if (week['$=='](53)) {
+        return $$$('Time').$new($rb_minus(self.$year(), 1), 12, 31).$cweek_cyear()
+      } else if ($eqeq(week, 53)) {
         
-        dec31 = $$($nesting, 'Time').$new(self.$year(), 12, 31);
+        dec31 = $$$('Time').$new(self.$year(), 12, 31);
         dec31_wday = dec31.$wday();
-        if ($truthy((function() {if ($truthy(($ret_or_4 = $rb_le(dec31_wday, 3)))) {
-          return dec31_wday['$!='](0)
-        } else {
-          return $ret_or_4
-        }; return nil; })())) {
+        if (($truthy($rb_le(dec31_wday, 3)) && ($neqeq(dec31_wday, 0)))) {
           
           week = 1;
-          year = $rb_plus(year, 1);};};
+          year = $rb_plus(year, 1);
+        };
+      };
       return [week, year];
-    }, $Time_cweek_cyear$42.$$arity = 0), nil) && 'cweek_cyear';
-  })($nesting[0], Date, $nesting);
+    }, 0);
+    (function(self, $parent_nesting) {
+      
+      
+      $alias(self, "mktime", "local");
+      return $alias(self, "utc", "gm");
+    })(Opal.get_singleton_class(self), $nesting);
+    $alias(self, "ctime", "asctime");
+    $alias(self, "dst?", "isdst");
+    $alias(self, "getutc", "getgm");
+    $alias(self, "gmtoff", "gmt_offset");
+    $alias(self, "mday", "day");
+    $alias(self, "month", "mon");
+    $alias(self, "to_s", "inspect");
+    $alias(self, "tv_sec", "to_i");
+    $alias(self, "tv_usec", "usec");
+    $alias(self, "utc", "gmtime");
+    $alias(self, "utc?", "gmt?");
+    return $alias(self, "utc_offset", "gmt_offset");
+  })('::', Date, $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/struct"] = function(Opal) {
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  function $rb_ge(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs >= rhs : lhs['$>='](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $hash2 = Opal.hash2, $truthy = Opal.truthy, $send = Opal.send, $alias = Opal.alias;
+Opal.modules["corelib/struct"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $hash2 = Opal.hash2, $truthy = Opal.truthy, $neqeq = Opal.neqeq, $eqeq = Opal.eqeq, $Opal = Opal.Opal, $send = Opal.send, $Class = Opal.Class, $to_a = Opal.to_a, $def = Opal.def, $defs = Opal.defs, $Kernel = Opal.Kernel, $rb_gt = Opal.rb_gt, $rb_minus = Opal.rb_minus, $eqeqeq = Opal.eqeqeq, $rb_lt = Opal.rb_lt, $rb_ge = Opal.rb_ge, $rb_plus = Opal.rb_plus, $alias = Opal.alias;
 
-  Opal.add_stubs(['$require', '$include', '$==', '$class', '$!=', '$upcase', '$[]', '$unshift', '$const_name!', '$map', '$coerce_to!', '$new', '$each', '$define_struct_attribute', '$allocate', '$initialize', '$alias_method', '$module_eval', '$to_proc', '$const_set', '$raise', '$<<', '$members', '$define_method', '$instance_eval', '$last', '$>', '$length', '$-', '$keys', '$any?', '$join', '$[]=', '$each_with_index', '$hash', '$===', '$<', '$-@', '$size', '$>=', '$include?', '$to_sym', '$instance_of?', '$__id__', '$eql?', '$enum_for', '$name', '$+', '$each_pair', '$inspect', '$to_h', '$args', '$each_with_object', '$flatten', '$to_a', '$respond_to?', '$dig']);
+  Opal.add_stubs('require,include,!=,upcase,[],==,class,unshift,const_name!,map,coerce_to!,new,each,define_struct_attribute,allocate,initialize,alias_method,module_eval,to_proc,const_set,raise,<<,members,define_method,instance_eval,last,>,length,-,keys,any?,join,[]=,each_with_index,hash,===,<,-@,size,>=,include?,to_sym,instance_of?,__id__,eql?,enum_for,+,name,each_pair,inspect,to_h,args,each_with_object,flatten,to_a,respond_to?,dig');
   
   self.$require("corelib/enumerable");
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Struct');
 
-    var $nesting = [self].concat($parent_nesting), $Struct_new$1, $Struct_define_struct_attribute$6, $Struct_members$9, $Struct_inherited$10, $Struct_initialize$12, $Struct_initialize_copy$15, $Struct_members$16, $Struct_hash$17, $Struct_$$$18, $Struct_$$$eq$19, $Struct_$eq_eq$20, $Struct_eql$ques$21, $Struct_each$22, $Struct_each_pair$25, $Struct_length$28, $Struct_to_a$29, $Struct_inspect$31, $Struct_to_h$33, $Struct_values_at$35, $Struct_dig$37;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
-    self.$include($$($nesting, 'Enumerable'));
-    Opal.defs(self, '$new', $Struct_new$1 = function(const_name, $a, $b) {
-      var $iter = $Struct_new$1.$$p, block = $iter || nil, $post_args, $kwargs, args, keyword_init, $$2, $$3, self = this, $ret_or_1 = nil, klass = nil;
+    self.$include($$$('Enumerable'));
+    $defs(self, '$new', function $Struct_new$1(const_name, $a, $b) {
+      var block = $Struct_new$1.$$p || nil, $post_args, $kwargs, args, keyword_init, self = this, klass = nil;
 
-      if ($iter) $Struct_new$1.$$p = null;
-      
+      delete $Struct_new$1.$$p;
       
-      if ($iter) $Struct_new$1.$$p = null;;
+      ;
       
-      $post_args = Opal.slice.call(arguments, 1, arguments.length);
+      $post_args = Opal.slice.call(arguments, 1);
       
       $kwargs = Opal.extract_kwargs($post_args);
       
@@ -23578,24 +23116,18 @@ Opal.modules["corelib/struct"] = function(Opal) {
       args = $post_args;;
       
       keyword_init = $kwargs.$$smap["keyword_init"];
-      if (keyword_init == null) {
-        keyword_init = false
-      };
+      if (keyword_init == null) keyword_init = false;
       if ($truthy(const_name)) {
-        if ($truthy((function() {if ($truthy(($ret_or_1 = const_name.$class()['$==']($$($nesting, 'String'))))) {
-          return const_name['$[]'](0).$upcase()['$!='](const_name['$[]'](0))
-        } else {
-          return $ret_or_1
-        }; return nil; })())) {
+        if (($eqeq(const_name.$class(), $$$('String')) && ($neqeq(const_name['$[]'](0).$upcase(), const_name['$[]'](0))))) {
           
           args.$unshift(const_name);
           const_name = nil;
         } else {
           
           try {
-            const_name = $$($nesting, 'Opal')['$const_name!'](const_name)
+            const_name = $Opal['$const_name!'](const_name)
           } catch ($err) {
-            if (Opal.rescue($err, [$$($nesting, 'TypeError'), $$($nesting, 'NameError')])) {
+            if (Opal.rescue($err, [$$$('TypeError'), $$$('NameError')])) {
               try {
                 
                 args.$unshift(const_name);
@@ -23603,152 +23135,134 @@ Opal.modules["corelib/struct"] = function(Opal) {
               } finally { Opal.pop_exception(); }
             } else { throw $err; }
           };
-        }};
-      $send(args, 'map', [], ($$2 = function(arg){var self = $$2.$$s == null ? this : $$2.$$s;
-
+        }
+      };
+      $send(args, 'map', [], function $$2(arg){
         
         
-        if (arg == null) {
-          arg = nil;
-        };
-        return $$($nesting, 'Opal')['$coerce_to!'](arg, $$($nesting, 'String'), "to_str");}, $$2.$$s = self, $$2.$$arity = 1, $$2));
-      klass = $send($$($nesting, 'Class'), 'new', [self], ($$3 = function(){var self = $$3.$$s == null ? this : $$3.$$s, $$4;
+        if (arg == null) arg = nil;;
+        return $Opal['$coerce_to!'](arg, $$$('String'), "to_str");}, 1);
+      klass = $send($Class, 'new', [self], function $$3(){var self = $$3.$$s == null ? this : $$3.$$s;
 
         
-        $send(args, 'each', [], ($$4 = function(arg){var self = $$4.$$s == null ? this : $$4.$$s;
+        $send(args, 'each', [], function $$4(arg){var self = $$4.$$s == null ? this : $$4.$$s;
 
           
           
-          if (arg == null) {
-            arg = nil;
-          };
-          return self.$define_struct_attribute(arg);}, $$4.$$s = self, $$4.$$arity = 1, $$4));
+          if (arg == null) arg = nil;;
+          return self.$define_struct_attribute(arg);}, {$$arity: 1, $$s: self});
         return (function(self, $parent_nesting) {
-          var $nesting = [self].concat($parent_nesting), $new$5;
-
           
           
-          Opal.def(self, '$new', $new$5 = function($a) {
+          
+          $def(self, '$new', function $new$5($a) {
             var $post_args, args, self = this, instance = nil;
 
             
             
-            $post_args = Opal.slice.call(arguments, 0, arguments.length);
+            $post_args = Opal.slice.call(arguments);
             
             args = $post_args;;
             instance = self.$allocate();
             instance.$$data = {};
-            $send(instance, 'initialize', Opal.to_a(args));
+            $send(instance, 'initialize', $to_a(args));
             return instance;
-          }, $new$5.$$arity = -1);
+          }, -1);
           return self.$alias_method("[]", "new");
-        })(Opal.get_singleton_class(self), $nesting);}, $$3.$$s = self, $$3.$$arity = 0, $$3));
+        })(Opal.get_singleton_class(self), $nesting);}, {$$arity: 0, $$s: self});
       if ($truthy(block)) {
-        $send(klass, 'module_eval', [], block.$to_proc())};
+        $send(klass, 'module_eval', [], block.$to_proc())
+      };
       klass.$$keyword_init = keyword_init;
       if ($truthy(const_name)) {
-        $$($nesting, 'Struct').$const_set(const_name, klass)};
+        $$$('Struct').$const_set(const_name, klass)
+      };
       return klass;
-    }, $Struct_new$1.$$arity = -2);
-    Opal.defs(self, '$define_struct_attribute', $Struct_define_struct_attribute$6 = function $$define_struct_attribute(name) {
-      var $$7, $$8, self = this;
+    }, -2);
+    $defs(self, '$define_struct_attribute', function $$define_struct_attribute(name) {
+      var self = this;
 
       
-      if (self['$==']($$($nesting, 'Struct'))) {
-        self.$raise($$($nesting, 'ArgumentError'), "you cannot define attributes to the Struct class")};
+      if ($eqeq(self, $$$('Struct'))) {
+        $Kernel.$raise($$$('ArgumentError'), "you cannot define attributes to the Struct class")
+      };
       self.$members()['$<<'](name);
-      $send(self, 'define_method', [name], ($$7 = function(){var self = $$7.$$s == null ? this : $$7.$$s;
+      $send(self, 'define_method', [name], function $$6(){var self = $$6.$$s == null ? this : $$6.$$s;
 
-        return self.$$data[name];}, $$7.$$s = self, $$7.$$arity = 0, $$7));
-      return $send(self, 'define_method', ["" + (name) + "="], ($$8 = function(value){var self = $$8.$$s == null ? this : $$8.$$s;
+        return self.$$data[name];}, {$$arity: 0, $$s: self});
+      return $send(self, 'define_method', ["" + (name) + "="], function $$7(value){var self = $$7.$$s == null ? this : $$7.$$s;
 
         
         
-        if (value == null) {
-          value = nil;
-        };
-        return self.$$data[name] = value;;}, $$8.$$s = self, $$8.$$arity = 1, $$8));
-    }, $Struct_define_struct_attribute$6.$$arity = 1);
-    Opal.defs(self, '$members', $Struct_members$9 = function $$members() {
-      var self = this, $ret_or_2 = nil;
+        if (value == null) value = nil;;
+        return self.$$data[name] = value;;}, {$$arity: 1, $$s: self});
+    }, 1);
+    $defs(self, '$members', function $$members() {
+      var self = this, $ret_or_1 = nil;
       if (self.members == null) self.members = nil;
 
       
-      if (self['$==']($$($nesting, 'Struct'))) {
-        self.$raise($$($nesting, 'ArgumentError'), "the Struct class has no members")};
-      return (self.members = (function() {if ($truthy(($ret_or_2 = self.members))) {
-        return $ret_or_2
-      } else {
-        return []
-      }; return nil; })());
-    }, $Struct_members$9.$$arity = 0);
-    Opal.defs(self, '$inherited', $Struct_inherited$10 = function $$inherited(klass) {
-      var $$11, self = this, members = nil;
+      if ($eqeq(self, $$$('Struct'))) {
+        $Kernel.$raise($$$('ArgumentError'), "the Struct class has no members")
+      };
+      return (self.members = ($truthy(($ret_or_1 = self.members)) ? ($ret_or_1) : ([])));
+    }, 0);
+    $defs(self, '$inherited', function $$inherited(klass) {
+      var self = this, members = nil;
       if (self.members == null) self.members = nil;
 
       
       members = self.members;
-      return $send(klass, 'instance_eval', [], ($$11 = function(){var self = $$11.$$s == null ? this : $$11.$$s;
+      return $send(klass, 'instance_eval', [], function $$8(){var self = $$8.$$s == null ? this : $$8.$$s;
 
-        return (self.members = members)}, $$11.$$s = self, $$11.$$arity = 0, $$11));
-    }, $Struct_inherited$10.$$arity = 1);
+        return (self.members = members)}, {$$arity: 0, $$s: self});
+    }, 1);
     
-    Opal.def(self, '$initialize', $Struct_initialize$12 = function $$initialize($a) {
-      var $post_args, args, $$13, $$14, self = this, kwargs = nil, $ret_or_3 = nil, $ret_or_4 = nil, extra = nil;
+    $def(self, '$initialize', function $$initialize($a) {
+      var $post_args, args, self = this, kwargs = nil, $ret_or_1 = nil, extra = nil;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
       if ($truthy(self.$class().$$keyword_init)) {
         
-        kwargs = (function() {if ($truthy(($ret_or_3 = args.$last()))) {
-          return $ret_or_3
-        } else {
-          return $hash2([], {})
-        }; return nil; })();
-        if ($truthy((function() {if ($truthy(($ret_or_4 = $rb_gt(args.$length(), 1)))) {
-          return $ret_or_4
-        } else {
-          return (args.length === 1 && !kwargs.$$is_hash);
-        }; return nil; })())) {
-          self.$raise($$($nesting, 'ArgumentError'), "" + "wrong number of arguments (given " + (args.$length()) + ", expected 0)")};
+        kwargs = ($truthy(($ret_or_1 = args.$last())) ? ($ret_or_1) : ($hash2([], {})));
+        if (($truthy($rb_gt(args.$length(), 1)) || ($truthy((args.length === 1 && !kwargs.$$is_hash))))) {
+          $Kernel.$raise($$$('ArgumentError'), "wrong number of arguments (given " + (args.$length()) + ", expected 0)")
+        };
         extra = $rb_minus(kwargs.$keys(), self.$class().$members());
         if ($truthy(extra['$any?']())) {
-          self.$raise($$($nesting, 'ArgumentError'), "" + "unknown keywords: " + (extra.$join(", ")))};
-        return $send(self.$class().$members(), 'each', [], ($$13 = function(name){var self = $$13.$$s == null ? this : $$13.$$s, $writer = nil;
+          $Kernel.$raise($$$('ArgumentError'), "unknown keywords: " + (extra.$join(", ")))
+        };
+        return $send(self.$class().$members(), 'each', [], function $$9(name){var self = $$9.$$s == null ? this : $$9.$$s, $writer = nil;
 
           
           
-          if (name == null) {
-            name = nil;
-          };
+          if (name == null) name = nil;;
           $writer = [name, kwargs['$[]'](name)];
-          $send(self, '[]=', Opal.to_a($writer));
-          return $writer[$rb_minus($writer["length"], 1)];}, $$13.$$s = self, $$13.$$arity = 1, $$13));
+          $send(self, '[]=', $to_a($writer));
+          return $writer[$rb_minus($writer["length"], 1)];}, {$$arity: 1, $$s: self});
       } else {
         
         if ($truthy($rb_gt(args.$length(), self.$class().$members().$length()))) {
-          self.$raise($$($nesting, 'ArgumentError'), "struct size differs")};
-        return $send(self.$class().$members(), 'each_with_index', [], ($$14 = function(name, index){var self = $$14.$$s == null ? this : $$14.$$s, $writer = nil;
+          $Kernel.$raise($$$('ArgumentError'), "struct size differs")
+        };
+        return $send(self.$class().$members(), 'each_with_index', [], function $$10(name, index){var self = $$10.$$s == null ? this : $$10.$$s, $writer = nil;
 
           
           
-          if (name == null) {
-            name = nil;
-          };
+          if (name == null) name = nil;;
           
-          if (index == null) {
-            index = nil;
-          };
+          if (index == null) index = nil;;
           $writer = [name, args['$[]'](index)];
-          $send(self, '[]=', Opal.to_a($writer));
-          return $writer[$rb_minus($writer["length"], 1)];}, $$14.$$s = self, $$14.$$arity = 2, $$14));
+          $send(self, '[]=', $to_a($writer));
+          return $writer[$rb_minus($writer["length"], 1)];}, {$$arity: 2, $$s: self});
       };
-    }, $Struct_initialize$12.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$initialize_copy', $Struct_initialize_copy$15 = function $$initialize_copy(from) {
+    $def(self, '$initialize_copy', function $$initialize_copy(from) {
       var self = this;
 
       
@@ -23759,73 +23273,80 @@ Opal.modules["corelib/struct"] = function(Opal) {
         self.$$data[name] = from.$$data[name];
       }
     
-    }, $Struct_initialize_copy$15.$$arity = 1);
+    }, 1);
+    $defs(self, '$keyword_init?', function $Struct_keyword_init$ques$11() {
+      var self = this;
+
+      return self.$$keyword_init;
+    }, 0);
     
-    Opal.def(self, '$members', $Struct_members$16 = function $$members() {
+    $def(self, '$members', function $$members() {
       var self = this;
 
       return self.$class().$members()
-    }, $Struct_members$16.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$hash', $Struct_hash$17 = function $$hash() {
+    $def(self, '$hash', function $$hash() {
       var self = this;
 
-      return $$($nesting, 'Hash').$new(self.$$data).$hash()
-    }, $Struct_hash$17.$$arity = 0);
+      return $$('Hash').$new(self.$$data).$hash()
+    }, 0);
     
-    Opal.def(self, '$[]', $Struct_$$$18 = function(name) {
+    $def(self, '$[]', function $Struct_$$$12(name) {
       var self = this;
 
       
-      if ($truthy($$($nesting, 'Integer')['$==='](name))) {
+      if ($eqeqeq($$$('Integer'), name)) {
         
         if ($truthy($rb_lt(name, self.$class().$members().$size()['$-@']()))) {
-          self.$raise($$($nesting, 'IndexError'), "" + "offset " + (name) + " too small for struct(size:" + (self.$class().$members().$size()) + ")")};
+          $Kernel.$raise($$$('IndexError'), "offset " + (name) + " too small for struct(size:" + (self.$class().$members().$size()) + ")")
+        };
         if ($truthy($rb_ge(name, self.$class().$members().$size()))) {
-          self.$raise($$($nesting, 'IndexError'), "" + "offset " + (name) + " too large for struct(size:" + (self.$class().$members().$size()) + ")")};
+          $Kernel.$raise($$$('IndexError'), "offset " + (name) + " too large for struct(size:" + (self.$class().$members().$size()) + ")")
+        };
         name = self.$class().$members()['$[]'](name);
-      } else if ($truthy($$($nesting, 'String')['$==='](name))) {
+      } else if ($eqeqeq($$$('String'), name)) {
         
         if(!self.$$data.hasOwnProperty(name)) {
-          self.$raise($$($nesting, 'NameError').$new("" + "no member '" + (name) + "' in struct", name))
+          $Kernel.$raise($$$('NameError').$new("no member '" + (name) + "' in struct", name))
         }
       
       } else {
-        self.$raise($$($nesting, 'TypeError'), "" + "no implicit conversion of " + (name.$class()) + " into Integer")
+        $Kernel.$raise($$$('TypeError'), "no implicit conversion of " + (name.$class()) + " into Integer")
       };
-      name = $$($nesting, 'Opal')['$coerce_to!'](name, $$($nesting, 'String'), "to_str");
+      name = $Opal['$coerce_to!'](name, $$$('String'), "to_str");
       return self.$$data[name];;
-    }, $Struct_$$$18.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$[]=', $Struct_$$$eq$19 = function(name, value) {
+    $def(self, '$[]=', function $Struct_$$$eq$13(name, value) {
       var self = this;
 
       
-      if ($truthy($$($nesting, 'Integer')['$==='](name))) {
+      if ($eqeqeq($$$('Integer'), name)) {
         
         if ($truthy($rb_lt(name, self.$class().$members().$size()['$-@']()))) {
-          self.$raise($$($nesting, 'IndexError'), "" + "offset " + (name) + " too small for struct(size:" + (self.$class().$members().$size()) + ")")};
+          $Kernel.$raise($$$('IndexError'), "offset " + (name) + " too small for struct(size:" + (self.$class().$members().$size()) + ")")
+        };
         if ($truthy($rb_ge(name, self.$class().$members().$size()))) {
-          self.$raise($$($nesting, 'IndexError'), "" + "offset " + (name) + " too large for struct(size:" + (self.$class().$members().$size()) + ")")};
+          $Kernel.$raise($$$('IndexError'), "offset " + (name) + " too large for struct(size:" + (self.$class().$members().$size()) + ")")
+        };
         name = self.$class().$members()['$[]'](name);
-      } else if ($truthy($$($nesting, 'String')['$==='](name))) {
-        if ($truthy(self.$class().$members()['$include?'](name.$to_sym()))) {
-        } else {
-          self.$raise($$($nesting, 'NameError').$new("" + "no member '" + (name) + "' in struct", name))
+      } else if ($eqeqeq($$$('String'), name)) {
+        if (!$truthy(self.$class().$members()['$include?'](name.$to_sym()))) {
+          $Kernel.$raise($$$('NameError').$new("no member '" + (name) + "' in struct", name))
         }
       } else {
-        self.$raise($$($nesting, 'TypeError'), "" + "no implicit conversion of " + (name.$class()) + " into Integer")
+        $Kernel.$raise($$$('TypeError'), "no implicit conversion of " + (name.$class()) + " into Integer")
       };
-      name = $$($nesting, 'Opal')['$coerce_to!'](name, $$($nesting, 'String'), "to_str");
+      name = $Opal['$coerce_to!'](name, $$$('String'), "to_str");
       return self.$$data[name] = value;;
-    }, $Struct_$$$eq$19.$$arity = 2);
+    }, 2);
     
-    Opal.def(self, '$==', $Struct_$eq_eq$20 = function(other) {
+    $def(self, '$==', function $Struct_$eq_eq$14(other) {
       var self = this;
 
       
-      if ($truthy(other['$instance_of?'](self.$class()))) {
-      } else {
+      if (!$truthy(other['$instance_of?'](self.$class()))) {
         return false
       };
       
@@ -23841,7 +23362,7 @@ Opal.modules["corelib/struct"] = function(Opal) {
           a = struct.$$data[key];
           b = other.$$data[key];
 
-          if ($$($nesting, 'Struct')['$==='](a)) {
+          if ($$$('Struct')['$==='](a)) {
             if (!recursed1.hasOwnProperty((a).$__id__()) || !recursed2.hasOwnProperty((b).$__id__())) {
               if (!_eqeq(a, b)) {
                 return false;
@@ -23859,14 +23380,13 @@ Opal.modules["corelib/struct"] = function(Opal) {
 
       return _eqeq(self, other);
     ;
-    }, $Struct_$eq_eq$20.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$eql?', $Struct_eql$ques$21 = function(other) {
+    $def(self, '$eql?', function $Struct_eql$ques$15(other) {
       var self = this;
 
       
-      if ($truthy(other['$instance_of?'](self.$class()))) {
-      } else {
+      if (!$truthy(other['$instance_of?'](self.$class()))) {
         return false
       };
       
@@ -23882,7 +23402,7 @@ Opal.modules["corelib/struct"] = function(Opal) {
           a = struct.$$data[key];
           b = other.$$data[key];
 
-          if ($$($nesting, 'Struct')['$==='](a)) {
+          if ($$$('Struct')['$==='](a)) {
             if (!recursed1.hasOwnProperty((a).$__id__()) || !recursed2.hasOwnProperty((b).$__id__())) {
               if (!_eqeq(a, b)) {
                 return false;
@@ -23900,222 +23420,182 @@ Opal.modules["corelib/struct"] = function(Opal) {
 
       return _eqeq(self, other);
     ;
-    }, $Struct_eql$ques$21.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$each', $Struct_each$22 = function $$each() {
-      var $$23, $$24, $iter = $Struct_each$22.$$p, $yield = $iter || nil, self = this;
+    $def(self, '$each', function $$each() {
+      var $yield = $$each.$$p || nil, self = this;
 
-      if ($iter) $Struct_each$22.$$p = null;
+      delete $$each.$$p;
       
-      if (($yield !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["each"], ($$23 = function(){var self = $$23.$$s == null ? this : $$23.$$s;
+      if (!($yield !== nil)) {
+        return $send(self, 'enum_for', ["each"], function $$16(){var self = $$16.$$s == null ? this : $$16.$$s;
 
-          return self.$size()}, $$23.$$s = self, $$23.$$arity = 0, $$23))
+          return self.$size()}, {$$arity: 0, $$s: self})
       };
-      $send(self.$class().$members(), 'each', [], ($$24 = function(name){var self = $$24.$$s == null ? this : $$24.$$s;
+      $send(self.$class().$members(), 'each', [], function $$17(name){var self = $$17.$$s == null ? this : $$17.$$s;
 
         
         
-        if (name == null) {
-          name = nil;
-        };
-        return Opal.yield1($yield, self['$[]'](name));;}, $$24.$$s = self, $$24.$$arity = 1, $$24));
+        if (name == null) name = nil;;
+        return Opal.yield1($yield, self['$[]'](name));;}, {$$arity: 1, $$s: self});
       return self;
-    }, $Struct_each$22.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$each_pair', $Struct_each_pair$25 = function $$each_pair() {
-      var $$26, $$27, $iter = $Struct_each_pair$25.$$p, $yield = $iter || nil, self = this;
+    $def(self, '$each_pair', function $$each_pair() {
+      var $yield = $$each_pair.$$p || nil, self = this;
 
-      if ($iter) $Struct_each_pair$25.$$p = null;
+      delete $$each_pair.$$p;
       
-      if (($yield !== nil)) {
-      } else {
-        return $send(self, 'enum_for', ["each_pair"], ($$26 = function(){var self = $$26.$$s == null ? this : $$26.$$s;
+      if (!($yield !== nil)) {
+        return $send(self, 'enum_for', ["each_pair"], function $$18(){var self = $$18.$$s == null ? this : $$18.$$s;
 
-          return self.$size()}, $$26.$$s = self, $$26.$$arity = 0, $$26))
+          return self.$size()}, {$$arity: 0, $$s: self})
       };
-      $send(self.$class().$members(), 'each', [], ($$27 = function(name){var self = $$27.$$s == null ? this : $$27.$$s;
+      $send(self.$class().$members(), 'each', [], function $$19(name){var self = $$19.$$s == null ? this : $$19.$$s;
 
         
         
-        if (name == null) {
-          name = nil;
-        };
-        return Opal.yield1($yield, [name, self['$[]'](name)]);;}, $$27.$$s = self, $$27.$$arity = 1, $$27));
+        if (name == null) name = nil;;
+        return Opal.yield1($yield, [name, self['$[]'](name)]);;}, {$$arity: 1, $$s: self});
       return self;
-    }, $Struct_each_pair$25.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$length', $Struct_length$28 = function $$length() {
+    $def(self, '$length', function $$length() {
       var self = this;
 
       return self.$class().$members().$length()
-    }, $Struct_length$28.$$arity = 0);
-    $alias(self, "size", "length");
+    }, 0);
     
-    Opal.def(self, '$to_a', $Struct_to_a$29 = function $$to_a() {
-      var $$30, self = this;
+    $def(self, '$to_a', function $$to_a() {
+      var self = this;
 
-      return $send(self.$class().$members(), 'map', [], ($$30 = function(name){var self = $$30.$$s == null ? this : $$30.$$s;
+      return $send(self.$class().$members(), 'map', [], function $$20(name){var self = $$20.$$s == null ? this : $$20.$$s;
 
         
         
-        if (name == null) {
-          name = nil;
-        };
-        return self['$[]'](name);}, $$30.$$s = self, $$30.$$arity = 1, $$30))
-    }, $Struct_to_a$29.$$arity = 0);
-    $alias(self, "values", "to_a");
+        if (name == null) name = nil;;
+        return self['$[]'](name);}, {$$arity: 1, $$s: self})
+    }, 0);
+    var inspect_stack = [];
     
-    Opal.def(self, '$inspect', $Struct_inspect$31 = function $$inspect() {
-      var $$32, self = this, result = nil, $ret_or_5 = nil;
+    $def(self, '$inspect', function $$inspect() {
+      var self = this, result = nil, pushed = nil;
 
+      return (function() { try {
       
       result = "#<struct ";
-      if ($truthy((function() {if ($truthy(($ret_or_5 = $$($nesting, 'Struct')['$==='](self)))) {
-        return self.$class().$name()
+      if ($truthy((inspect_stack)['$include?'](self.$__id__()))) {
+        return $rb_plus(result, ":...>")
       } else {
-        return $ret_or_5
-      }; return nil; })())) {
-        result = $rb_plus(result, "" + (self.$class()) + " ")};
-      result = $rb_plus(result, $send(self.$each_pair(), 'map', [], ($$32 = function(name, value){var self = $$32.$$s == null ? this : $$32.$$s;
-
-        
-        
-        if (name == null) {
-          name = nil;
-        };
         
-        if (value == null) {
-          value = nil;
+        (inspect_stack)['$<<'](self.$__id__());
+        pushed = true;
+        if (($eqeqeq($$$('Struct'), self) && ($truthy(self.$class().$name())))) {
+          result = $rb_plus(result, "" + (self.$class()) + " ")
         };
-        return "" + (name) + "=" + (value.$inspect());}, $$32.$$s = self, $$32.$$arity = 2, $$32)).$join(", "));
-      result = $rb_plus(result, ">");
-      return result;
-    }, $Struct_inspect$31.$$arity = 0);
-    $alias(self, "to_s", "inspect");
+        result = $rb_plus(result, $send(self.$each_pair(), 'map', [], function $$21(name, value){
+          
+          
+          if (name == null) name = nil;;
+          
+          if (value == null) value = nil;;
+          return "" + (name) + "=" + ($$('Opal').$inspect(value));}, 2).$join(", "));
+        result = $rb_plus(result, ">");
+        return result;
+      };
+      } finally {
+        ($truthy(pushed) ? (inspect_stack.pop()) : nil)
+      }; })()
+    }, 0);
     
-    Opal.def(self, '$to_h', $Struct_to_h$33 = function $$to_h() {
-      var $iter = $Struct_to_h$33.$$p, block = $iter || nil, $$34, self = this;
+    $def(self, '$to_h', function $$to_h() {
+      var block = $$to_h.$$p || nil, self = this;
 
-      if ($iter) $Struct_to_h$33.$$p = null;
+      delete $$to_h.$$p;
       
-      
-      if ($iter) $Struct_to_h$33.$$p = null;;
+      ;
       if ((block !== nil)) {
-        return $send($send(self, 'map', [], block.$to_proc()), 'to_h', Opal.to_a(self.$args()))};
-      return $send(self.$class().$members(), 'each_with_object', [$hash2([], {})], ($$34 = function(name, h){var self = $$34.$$s == null ? this : $$34.$$s, $writer = nil;
+        return $send($send(self, 'map', [], block.$to_proc()), 'to_h', $to_a(self.$args()))
+      };
+      return $send(self.$class().$members(), 'each_with_object', [$hash2([], {})], function $$22(name, h){var self = $$22.$$s == null ? this : $$22.$$s, $writer = nil;
 
         
         
-        if (name == null) {
-          name = nil;
-        };
+        if (name == null) name = nil;;
         
-        if (h == null) {
-          h = nil;
-        };
+        if (h == null) h = nil;;
         $writer = [name, self['$[]'](name)];
-        $send(h, '[]=', Opal.to_a($writer));
-        return $writer[$rb_minus($writer["length"], 1)];}, $$34.$$s = self, $$34.$$arity = 2, $$34));
-    }, $Struct_to_h$33.$$arity = 0);
+        $send(h, '[]=', $to_a($writer));
+        return $writer[$rb_minus($writer["length"], 1)];}, {$$arity: 2, $$s: self});
+    }, 0);
     
-    Opal.def(self, '$values_at', $Struct_values_at$35 = function $$values_at($a) {
-      var $post_args, args, $$36, self = this;
+    $def(self, '$values_at', function $$values_at($a) {
+      var $post_args, args, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
-      args = $send(args, 'map', [], ($$36 = function(arg){var self = $$36.$$s == null ? this : $$36.$$s;
-
+      args = $send(args, 'map', [], function $$23(arg){
         
         
-        if (arg == null) {
-          arg = nil;
-        };
-        return arg.$$is_range ? arg.$to_a() : arg;}, $$36.$$s = self, $$36.$$arity = 1, $$36)).$flatten();
+        if (arg == null) arg = nil;;
+        return arg.$$is_range ? arg.$to_a() : arg;}, 1).$flatten();
       
       var result = [];
       for (var i = 0, len = args.length; i < len; i++) {
         if (!args[i].$$is_number) {
-          self.$raise($$($nesting, 'TypeError'), "" + "no implicit conversion of " + ((args[i]).$class()) + " into Integer")
+          $Kernel.$raise($$$('TypeError'), "no implicit conversion of " + ((args[i]).$class()) + " into Integer")
         }
         result.push(self['$[]'](args[i]));
       }
       return result;
     ;
-    }, $Struct_values_at$35.$$arity = -1);
-    return (Opal.def(self, '$dig', $Struct_dig$37 = function $$dig(key, $a) {
+    }, -1);
+    
+    $def(self, '$dig', function $$dig(key, $a) {
       var $post_args, keys, self = this, item = nil;
 
       
       
-      $post_args = Opal.slice.call(arguments, 1, arguments.length);
+      $post_args = Opal.slice.call(arguments, 1);
       
       keys = $post_args;;
-      item = (function() {if ($truthy(key.$$is_string && self.$$data.hasOwnProperty(key))) {
-        return self.$$data[key] || nil;
-      } else {
-        return nil
-      }; return nil; })();
+      item = ($truthy(key.$$is_string && self.$$data.hasOwnProperty(key)) ? (self.$$data[key] || nil) : nil);
       
       if (item === nil || keys.length === 0) {
         return item;
       }
     ;
-      if ($truthy(item['$respond_to?']("dig"))) {
-      } else {
-        self.$raise($$($nesting, 'TypeError'), "" + (item.$class()) + " does not have #dig method")
+      if (!$truthy(item['$respond_to?']("dig"))) {
+        $Kernel.$raise($$$('TypeError'), "" + (item.$class()) + " does not have #dig method")
       };
-      return $send(item, 'dig', Opal.to_a(keys));
-    }, $Struct_dig$37.$$arity = -2), nil) && 'dig';
-  })($nesting[0], null, $nesting);
-};
-
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/main"] = function(Opal) {
-  var $to_s$1, $include$2, $using$3, self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$;
-
-  Opal.add_stubs(['$include', '$raise']);
-  
-  Opal.defs(self, '$to_s', $to_s$1 = function $$to_s() {
-    var self = this;
-
-    return "main"
-  }, $to_s$1.$$arity = 0);
-  Opal.defs(self, '$include', $include$2 = function $$include(mod) {
-    var self = this;
-
-    return $$($nesting, 'Object').$include(mod)
-  }, $include$2.$$arity = 1);
-  return (Opal.defs(self, '$using', $using$3 = function $$using(mod) {
-    var self = this;
-
-    return self.$raise("main.using is permitted only at toplevel")
-  }, $using$3.$$arity = 1), nil) && 'using';
+      return $send(item, 'dig', $to_a(keys));
+    }, -2);
+    $alias(self, "size", "length");
+    $alias(self, "to_s", "inspect");
+    return $alias(self, "values", "to_a");
+  })('::', null, $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/dir"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $alias = Opal.alias, $truthy = Opal.truthy;
+Opal.modules["corelib/dir"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $def = Opal.def, $truthy = Opal.truthy, $alias = Opal.alias;
 
-  Opal.add_stubs(['$[]']);
+  Opal.add_stubs('[]');
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Dir');
 
     var $nesting = [self].concat($parent_nesting);
 
     return (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting), $chdir$1, $pwd$2, $home$3;
-
       
       
-      Opal.def(self, '$chdir', $chdir$1 = function $$chdir(dir) {
-        var $iter = $chdir$1.$$p, $yield = $iter || nil, self = this, prev_cwd = nil;
+      
+      $def(self, '$chdir', function $$chdir(dir) {
+        var $yield = $$chdir.$$p || nil, prev_cwd = nil;
 
-        if ($iter) $chdir$1.$$p = null;
+        delete $$chdir.$$p;
         return (function() { try {
         
         prev_cwd = Opal.current_dir;
@@ -24124,86 +23604,70 @@ Opal.modules["corelib/dir"] = function(Opal) {
         } finally {
           Opal.current_dir = prev_cwd
         }; })()
-      }, $chdir$1.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$pwd', $pwd$2 = function $$pwd() {
-        var self = this;
-
+      $def(self, '$pwd', function $$pwd() {
+        
         return Opal.current_dir || '.';
-      }, $pwd$2.$$arity = 0);
-      $alias(self, "getwd", "pwd");
-      return (Opal.def(self, '$home', $home$3 = function $$home() {
-        var self = this, $ret_or_1 = nil;
+      }, 0);
+      
+      $def(self, '$home', function $$home() {
+        var $ret_or_1 = nil;
 
-        if ($truthy(($ret_or_1 = $$($nesting, 'ENV')['$[]']("HOME")))) {
+        if ($truthy(($ret_or_1 = $$$('ENV')['$[]']("HOME")))) {
           return $ret_or_1
         } else {
           return "."
         }
-      }, $home$3.$$arity = 0), nil) && 'home';
+      }, 0);
+      return $alias(self, "getwd", "pwd");
     })(Opal.get_singleton_class(self), $nesting)
-  })($nesting[0], null, $nesting)
+  })('::', null, $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/file"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $truthy = Opal.truthy, $klass = Opal.klass, $alias = Opal.alias, $range = Opal.range, $send = Opal.send;
+Opal.modules["corelib/file"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $truthy = Opal.truthy, $klass = Opal.klass, $const_set = Opal.const_set, $Opal = Opal.Opal, $regexp = Opal.regexp, $rb_plus = Opal.rb_plus, $def = Opal.def, $Kernel = Opal.Kernel, $eqeq = Opal.eqeq, $rb_lt = Opal.rb_lt, $rb_minus = Opal.rb_minus, $range = Opal.range, $send = Opal.send, $alias = Opal.alias;
 
-  Opal.add_stubs(['$respond_to?', '$to_path', '$pwd', '$split', '$sub', '$+', '$unshift', '$join', '$home', '$raise', '$start_with?', '$absolute_path', '$coerce_to!', '$basename', '$empty?', '$rindex', '$[]', '$nil?', '$==', '$-', '$length', '$gsub', '$find', '$=~', '$map', '$each_with_index', '$flatten', '$reject', '$to_proc', '$end_with?']);
+  Opal.add_stubs('respond_to?,to_path,coerce_to!,pwd,split,sub,+,unshift,join,home,raise,start_with?,absolute_path,==,<,dirname,-,basename,empty?,rindex,[],length,nil?,gsub,find,=~,map,each_with_index,flatten,reject,to_proc,end_with?');
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'File');
 
     var $nesting = [self].concat($parent_nesting), windows_root_rx = nil;
 
     
-    Opal.const_set($nesting[0], 'Separator', Opal.const_set($nesting[0], 'SEPARATOR', "/"));
-    Opal.const_set($nesting[0], 'ALT_SEPARATOR', nil);
-    Opal.const_set($nesting[0], 'PATH_SEPARATOR', ":");
-    Opal.const_set($nesting[0], 'FNM_SYSCASE', 0);
+    $const_set($nesting[0], 'Separator', $const_set($nesting[0], 'SEPARATOR', "/"));
+    $const_set($nesting[0], 'ALT_SEPARATOR', nil);
+    $const_set($nesting[0], 'PATH_SEPARATOR', ":");
+    $const_set($nesting[0], 'FNM_SYSCASE', 0);
     windows_root_rx = /^[a-zA-Z]:(?:\\|\/)/;
     return (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting), $absolute_path$1, $expand_path$2, $dirname$3, $basename$4, $extname$5, $exist$ques$6, $directory$ques$7, $join$9, $split$12;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
       
-      Opal.def(self, '$absolute_path', $absolute_path$1 = function $$absolute_path(path, basedir) {
-        var self = this, sep = nil, sep_chars = nil, new_parts = nil, $ret_or_1 = nil, path_abs = nil, basedir_abs = nil, parts = nil, leading_sep = nil, abs = nil, new_path = nil;
+      $def(self, '$absolute_path', function $$absolute_path(path, basedir) {
+        var sep = nil, sep_chars = nil, new_parts = nil, $ret_or_1 = nil, path_abs = nil, basedir_abs = nil, parts = nil, leading_sep = nil, abs = nil, new_path = nil;
 
         
         
-        if (basedir == null) {
-          basedir = nil;
-        };
-        sep = $$($nesting, 'SEPARATOR');
+        if (basedir == null) basedir = nil;;
+        sep = $$('SEPARATOR');
         sep_chars = $sep_chars();
         new_parts = [];
-        path = (function() {if ($truthy(path['$respond_to?']("to_path"))) {
-          return path.$to_path()
-        } else {
-          return path
-        }; return nil; })();
-        basedir = (function() {if ($truthy(($ret_or_1 = basedir))) {
-          return $ret_or_1
-        } else {
-          return $$($nesting, 'Dir').$pwd()
-        }; return nil; })();
+        path = ($truthy(path['$respond_to?']("to_path")) ? (path.$to_path()) : (path));
+        path = $Opal['$coerce_to!'](path, $$$('String'), "to_str");
+        basedir = ($truthy(($ret_or_1 = basedir)) ? ($ret_or_1) : ($$$('Dir').$pwd()));
         path_abs = path.substr(0, sep.length) === sep || windows_root_rx.test(path);
         basedir_abs = basedir.substr(0, sep.length) === sep || windows_root_rx.test(basedir);
         if ($truthy(path_abs)) {
           
-          parts = path.$split(Opal.regexp(["[", sep_chars, "]"]));
-          leading_sep = windows_root_rx.test(path) ? '' : path.$sub(Opal.regexp(["^([", sep_chars, "]+).*$"]), "\\1");
+          parts = path.$split($regexp(["[", sep_chars, "]"]));
+          leading_sep = windows_root_rx.test(path) ? '' : path.$sub($regexp(["^([", sep_chars, "]+).*$"]), "\\1");
           abs = true;
         } else {
           
-          parts = $rb_plus(basedir.$split(Opal.regexp(["[", sep_chars, "]"])), path.$split(Opal.regexp(["[", sep_chars, "]"])));
-          leading_sep = windows_root_rx.test(basedir) ? '' : basedir.$sub(Opal.regexp(["^([", sep_chars, "]+).*$"]), "\\1");
+          parts = $rb_plus(basedir.$split($regexp(["[", sep_chars, "]"])), path.$split($regexp(["[", sep_chars, "]"])));
+          leading_sep = windows_root_rx.test(basedir) ? '' : basedir.$sub($regexp(["^([", sep_chars, "]+).*$"]), "\\1");
           abs = basedir_abs;
         };
         
@@ -24231,40 +23695,38 @@ Opal.modules["corelib/file"] = function(Opal) {
       ;
         new_path = new_parts.$join(sep);
         if ($truthy(abs)) {
-          new_path = $rb_plus(leading_sep, new_path)};
+          new_path = $rb_plus(leading_sep, new_path)
+        };
         return new_path;
-      }, $absolute_path$1.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$expand_path', $expand_path$2 = function $$expand_path(path, basedir) {
+      $def(self, '$expand_path', function $$expand_path(path, basedir) {
         var self = this, sep = nil, sep_chars = nil, home = nil, leading_sep = nil, home_path_regexp = nil;
 
         
         
-        if (basedir == null) {
-          basedir = nil;
-        };
-        sep = $$($nesting, 'SEPARATOR');
+        if (basedir == null) basedir = nil;;
+        sep = $$('SEPARATOR');
         sep_chars = $sep_chars();
         if ($truthy(path[0] === '~' || (basedir && basedir[0] === '~'))) {
           
-          home = $$($nesting, 'Dir').$home();
-          if ($truthy(home)) {
-          } else {
-            self.$raise($$($nesting, 'ArgumentError'), "couldn't find HOME environment -- expanding `~'")
+          home = $$('Dir').$home();
+          if (!$truthy(home)) {
+            $Kernel.$raise($$$('ArgumentError'), "couldn't find HOME environment -- expanding `~'")
           };
-          leading_sep = windows_root_rx.test(home) ? '' : home.$sub(Opal.regexp(["^([", sep_chars, "]+).*$"]), "\\1");
-          if ($truthy(home['$start_with?'](leading_sep))) {
-          } else {
-            self.$raise($$($nesting, 'ArgumentError'), "non-absolute home")
+          leading_sep = windows_root_rx.test(home) ? '' : home.$sub($regexp(["^([", sep_chars, "]+).*$"]), "\\1");
+          if (!$truthy(home['$start_with?'](leading_sep))) {
+            $Kernel.$raise($$$('ArgumentError'), "non-absolute home")
           };
           home = $rb_plus(home, sep);
-          home_path_regexp = Opal.regexp(["^\\~(?:", sep, "|$)"]);
+          home_path_regexp = $regexp(["^\\~(?:", sep, "|$)"]);
           path = path.$sub(home_path_regexp, home);
           if ($truthy(basedir)) {
-            basedir = basedir.$sub(home_path_regexp, home)};};
+            basedir = basedir.$sub(home_path_regexp, home)
+          };
+        };
         return self.$absolute_path(path, basedir);
-      }, $expand_path$2.$$arity = -2);
-      $alias(self, "realpath", "expand_path");
+      }, -2);
       
       // Coerce a given path to a path string using #to_path and #to_str
       function $coerce_to_path(path) {
@@ -24272,50 +23734,64 @@ Opal.modules["corelib/file"] = function(Opal) {
           path = path.$to_path();
         }
 
-        path = $$($nesting, 'Opal')['$coerce_to!'](path, $$($nesting, 'String'), "to_str");
+        path = $Opal['$coerce_to!'](path, $$$('String'), "to_str");
 
         return path;
       }
 
       // Return a RegExp compatible char class
       function $sep_chars() {
-        if ($$($nesting, 'ALT_SEPARATOR') === nil) {
-          return Opal.escape_regexp($$($nesting, 'SEPARATOR'));
+        if ($$('ALT_SEPARATOR') === nil) {
+          return Opal.escape_regexp($$('SEPARATOR'));
         } else {
-          return Opal.escape_regexp($rb_plus($$($nesting, 'SEPARATOR'), $$($nesting, 'ALT_SEPARATOR')));
+          return Opal.escape_regexp($rb_plus($$('SEPARATOR'), $$('ALT_SEPARATOR')));
         }
       }
     ;
       
-      Opal.def(self, '$dirname', $dirname$3 = function $$dirname(path) {
+      $def(self, '$dirname', function $$dirname(path, level) {
         var self = this, sep_chars = nil;
 
         
+        
+        if (level == null) level = 1;;
+        if ($eqeq(level, 0)) {
+          return path
+        };
+        if ($truthy($rb_lt(level, 0))) {
+          $Kernel.$raise($$$('ArgumentError'), "level can't be negative")
+        };
         sep_chars = $sep_chars();
         path = $coerce_to_path(path);
         
-        var absolute = path.match(new RegExp("" + "^[" + (sep_chars) + "]"));
+        var absolute = path.match(new RegExp("^[" + (sep_chars) + "]")), out;
 
-        path = path.replace(new RegExp("" + "[" + (sep_chars) + "]+$"), ''); // remove trailing separators
-        path = path.replace(new RegExp("" + "[^" + (sep_chars) + "]+$"), ''); // remove trailing basename
-        path = path.replace(new RegExp("" + "[" + (sep_chars) + "]+$"), ''); // remove final trailing separators
+        path = path.replace(new RegExp("[" + (sep_chars) + "]+$"), ''); // remove trailing separators
+        path = path.replace(new RegExp("[^" + (sep_chars) + "]+$"), ''); // remove trailing basename
+        path = path.replace(new RegExp("[" + (sep_chars) + "]+$"), ''); // remove final trailing separators
 
         if (path === '') {
-          return absolute ? '/' : '.';
+          out = absolute ? '/' : '.';
+        }
+        else {
+          out = path;
         }
 
-        return path;
+        if (level == 1) {
+          return out;
+        }
+        else {
+          return self.$dirname(out, $rb_minus(level, 1))
+        }
       ;
-      }, $dirname$3.$$arity = 1);
+      }, -2);
       
-      Opal.def(self, '$basename', $basename$4 = function $$basename(name, suffix) {
-        var self = this, sep_chars = nil;
+      $def(self, '$basename', function $$basename(name, suffix) {
+        var sep_chars = nil;
 
         
         
-        if (suffix == null) {
-          suffix = nil;
-        };
+        if (suffix == null) suffix = nil;;
         sep_chars = $sep_chars();
         name = $coerce_to_path(name);
         
@@ -24324,13 +23800,13 @@ Opal.modules["corelib/file"] = function(Opal) {
         }
 
         if (suffix !== nil) {
-          suffix = $$($nesting, 'Opal')['$coerce_to!'](suffix, $$($nesting, 'String'), "to_str")
+          suffix = $Opal['$coerce_to!'](suffix, $$$('String'), "to_str")
         } else {
           suffix = null;
         }
 
-        name = name.replace(new RegExp("" + "(.)[" + (sep_chars) + "]*$"), '$1');
-        name = name.replace(new RegExp("" + "^(?:.*[" + (sep_chars) + "])?([^" + (sep_chars) + "]+)$"), '$1');
+        name = name.replace(new RegExp("(.)[" + (sep_chars) + "]*$"), '$1');
+        name = name.replace(new RegExp("^(?:.*[" + (sep_chars) + "])?([^" + (sep_chars) + "]+)$"), '$1');
 
         if (suffix === ".*") {
           name = name.replace(/\.[^\.]+$/, '');
@@ -24341,37 +23817,32 @@ Opal.modules["corelib/file"] = function(Opal) {
 
         return name;
       ;
-      }, $basename$4.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$extname', $extname$5 = function $$extname(path) {
-        var self = this, filename = nil, last_dot_idx = nil, $ret_or_2 = nil;
+      $def(self, '$extname', function $$extname(path) {
+        var self = this, filename = nil, last_dot_idx = nil;
 
         
         path = $coerce_to_path(path);
         filename = self.$basename(path);
         if ($truthy(filename['$empty?']())) {
-          return ""};
+          return ""
+        };
         last_dot_idx = filename['$[]']($range(1, -1, false)).$rindex(".");
-        if ($truthy((function() {if ($truthy(($ret_or_2 = last_dot_idx['$nil?']()))) {
-          return $ret_or_2
-        } else {
-          return $rb_plus(last_dot_idx, 1)['$==']($rb_minus(filename.$length(), 1))
-        }; return nil; })())) {
+        if (($truthy(last_dot_idx['$nil?']()) || ($eqeq($rb_plus(last_dot_idx, 1), $rb_minus(filename.$length(), 1))))) {
           return ""
         } else {
           return filename['$[]'](Opal.Range.$new($rb_plus(last_dot_idx, 1), -1, false))
         };
-      }, $extname$5.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$exist?', $exist$ques$6 = function(path) {
-        var self = this;
-
+      $def(self, '$exist?', function $exist$ques$1(path) {
+        
         return Opal.modules[path] != null
-      }, $exist$ques$6.$$arity = 1);
-      $alias(self, "exists?", "exist?");
+      }, 1);
       
-      Opal.def(self, '$directory?', $directory$ques$7 = function(path) {
-        var $$8, self = this, files = nil, file = nil;
+      $def(self, '$directory?', function $directory$ques$2(path) {
+        var files = nil, file = nil;
 
         
         files = [];
@@ -24380,120 +23851,120 @@ Opal.modules["corelib/file"] = function(Opal) {
           files.push(key)
         }
       ;
-        path = path.$gsub(Opal.regexp(["(^.", $$($nesting, 'SEPARATOR'), "+|", $$($nesting, 'SEPARATOR'), "+$)"]));
-        file = $send(files, 'find', [], ($$8 = function(f){var self = $$8.$$s == null ? this : $$8.$$s;
-
+        path = path.$gsub($regexp(["(^.", $$('SEPARATOR'), "+|", $$('SEPARATOR'), "+$)"]));
+        file = $send(files, 'find', [], function $$3(f){
           
           
-          if (f == null) {
-            f = nil;
-          };
-          return f['$=~'](Opal.regexp(["^", path]));}, $$8.$$s = self, $$8.$$arity = 1, $$8));
+          if (f == null) f = nil;;
+          return f['$=~']($regexp(["^", path]));}, 1);
         return file;
-      }, $directory$ques$7.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$join', $join$9 = function $$join($a) {
-        var $post_args, paths, $$10, $$11, self = this, result = nil;
+      $def(self, '$join', function $$join($a) {
+        var $post_args, paths, result = nil;
 
         
         
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
+        $post_args = Opal.slice.call(arguments);
         
         paths = $post_args;;
         if ($truthy(paths['$empty?']())) {
-          return ""};
+          return ""
+        };
         result = "";
-        paths = $send(paths.$flatten().$each_with_index(), 'map', [], ($$10 = function(item, index){var self = $$10.$$s == null ? this : $$10.$$s, $ret_or_3 = nil, $ret_or_4 = nil;
-
+        paths = $send(paths.$flatten().$each_with_index(), 'map', [], function $$4(item, index){
           
           
-          if (item == null) {
-            item = nil;
-          };
+          if (item == null) item = nil;;
           
-          if (index == null) {
-            index = nil;
-          };
-          if ($truthy((function() {if ($truthy(($ret_or_3 = index['$=='](0)))) {
-            return item['$empty?']()
-          } else {
-            return $ret_or_3
-          }; return nil; })())) {
-            return $$($nesting, 'SEPARATOR')
-          } else if ($truthy((function() {if ($truthy(($ret_or_4 = paths.$length()['$==']($rb_plus(index, 1))))) {
-            return item['$empty?']()
-          } else {
-            return $ret_or_4
-          }; return nil; })())) {
-            return $$($nesting, 'SEPARATOR')
+          if (index == null) index = nil;;
+          if (($eqeq(index, 0) && ($truthy(item['$empty?']())))) {
+            return $$('SEPARATOR')
+          } else if (($eqeq(paths.$length(), $rb_plus(index, 1)) && ($truthy(item['$empty?']())))) {
+            return $$('SEPARATOR')
           } else {
             return item
-          };}, $$10.$$s = self, $$10.$$arity = 2, $$10));
+          };}, 2);
         paths = $send(paths, 'reject', [], "empty?".$to_proc());
-        $send(paths, 'each_with_index', [], ($$11 = function(item, index){var self = $$11.$$s == null ? this : $$11.$$s, next_item = nil, $ret_or_5 = nil, $ret_or_6 = nil;
+        $send(paths, 'each_with_index', [], function $$5(item, index){var next_item = nil;
 
           
           
-          if (item == null) {
-            item = nil;
-          };
+          if (item == null) item = nil;;
           
-          if (index == null) {
-            index = nil;
-          };
+          if (index == null) index = nil;;
           next_item = paths['$[]']($rb_plus(index, 1));
           if ($truthy(next_item['$nil?']())) {
             return (result = "" + (result) + (item))
           } else {
             
-            if ($truthy((function() {if ($truthy(($ret_or_5 = item['$end_with?']($$($nesting, 'SEPARATOR'))))) {
-              return next_item['$start_with?']($$($nesting, 'SEPARATOR'))
-            } else {
-              return $ret_or_5
-            }; return nil; })())) {
-              item = item.$sub(Opal.regexp([$$($nesting, 'SEPARATOR'), "+$"]), "")};
-            return (result = (function() {if ($truthy((function() {if ($truthy(($ret_or_6 = item['$end_with?']($$($nesting, 'SEPARATOR'))))) {
-              return $ret_or_6
-            } else {
-              return next_item['$start_with?']($$($nesting, 'SEPARATOR'))
-            }; return nil; })())) {
-              return "" + (result) + (item)
-            } else {
-              return "" + (result) + (item) + ($$($nesting, 'SEPARATOR'))
-            }; return nil; })());
-          };}, $$11.$$s = self, $$11.$$arity = 2, $$11));
+            if (($truthy(item['$end_with?']($$('SEPARATOR'))) && ($truthy(next_item['$start_with?']($$('SEPARATOR')))))) {
+              item = item.$sub($regexp([$$('SEPARATOR'), "+$"]), "")
+            };
+            return (result = (($truthy(item['$end_with?']($$('SEPARATOR'))) || ($truthy(next_item['$start_with?']($$('SEPARATOR'))))) ? ("" + (result) + (item)) : ("" + (result) + (item) + ($$('SEPARATOR')))));
+          };}, 2);
         return result;
-      }, $join$9.$$arity = -1);
-      return (Opal.def(self, '$split', $split$12 = function $$split(path) {
-        var self = this;
-
-        return path.$split($$($nesting, 'SEPARATOR'))
-      }, $split$12.$$arity = 1), nil) && 'split';
+      }, -1);
+      
+      $def(self, '$split', function $$split(path) {
+        
+        return path.$split($$('SEPARATOR'))
+      }, 1);
+      $alias(self, "realpath", "expand_path");
+      return $alias(self, "exists?", "exist?");
     })(Opal.get_singleton_class(self), $nesting);
-  })($nesting[0], $$($nesting, 'IO'), $nesting)
+  })('::', $$$('IO'), $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/process"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $truthy = Opal.truthy;
+Opal.modules["corelib/process/base"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var nil = Opal.nil, $klass = Opal.klass, $defs = Opal.defs;
 
-  Opal.add_stubs(['$const_set', '$size', '$<<', '$__register_clock__', '$to_f', '$now', '$new', '$[]', '$raise']);
   
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'Process');
+  (function($base, $super) {
+    var self = $klass($base, $super, 'Signal');
+
+    
+    return $defs(self, '$trap', function $$trap($a) {
+      var $post_args, $rest_arg;
+
+      
+      
+      $post_args = Opal.slice.call(arguments);
+      
+      $rest_arg = $post_args;;
+      return nil;
+    }, -1)
+  })('::', null);
+  return (function($base, $super) {
+    var self = $klass($base, $super, 'GC');
+
+    
+    return $defs(self, '$start', function $$start() {
+      
+      return nil
+    }, 0)
+  })('::', null);
+};
+
+Opal.modules["corelib/process"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $defs = Opal.defs, $truthy = Opal.truthy, $Kernel = Opal.Kernel;
 
-    var $nesting = [self].concat($parent_nesting), $Process___register_clock__$1, $Process_pid$2, $Process_times$3, $Process_clock_gettime$4, monotonic = nil;
+  Opal.add_stubs('const_set,size,<<,__register_clock__,to_f,now,new,[],raise');
+  return (function($base) {
+    var self = $module($base, 'Process');
+
+    var monotonic = nil;
 
     
     self.__clocks__ = [];
-    Opal.defs(self, '$__register_clock__', $Process___register_clock__$1 = function $$__register_clock__(name, func) {
+    $defs(self, '$__register_clock__', function $$__register_clock__(name, func) {
       var self = this;
       if (self.__clocks__ == null) self.__clocks__ = nil;
 
       
       self.$const_set(name, self.__clocks__.$size());
       return self.__clocks__['$<<'](func);
-    }, $Process___register_clock__$1.$$arity = 2);
+    }, 2);
     self.$__register_clock__("CLOCK_REALTIME", function() { return Date.now() });
     monotonic = false;
     
@@ -24514,32 +23985,30 @@ Opal.modules["corelib/process"] = function(Opal) {
     }
   ;
     if ($truthy(monotonic)) {
-      self.$__register_clock__("CLOCK_MONOTONIC", monotonic)};
-    Opal.defs(self, '$pid', $Process_pid$2 = function $$pid() {
-      var self = this;
-
+      self.$__register_clock__("CLOCK_MONOTONIC", monotonic)
+    };
+    $defs(self, '$pid', function $$pid() {
+      
       return 0
-    }, $Process_pid$2.$$arity = 0);
-    Opal.defs(self, '$times', $Process_times$3 = function $$times() {
-      var self = this, t = nil;
+    }, 0);
+    $defs(self, '$times', function $$times() {
+      var t = nil;
 
       
-      t = $$($nesting, 'Time').$now().$to_f();
-      return $$$($$($nesting, 'Benchmark'), 'Tms').$new(t, t, t, t, t);
-    }, $Process_times$3.$$arity = 0);
-    return (Opal.defs(self, '$clock_gettime', $Process_clock_gettime$4 = function $$clock_gettime(clock_id, unit) {
+      t = $$$('Time').$now().$to_f();
+      return $$$($$$('Benchmark'), 'Tms').$new(t, t, t, t, t);
+    }, 0);
+    return $defs(self, '$clock_gettime', function $$clock_gettime(clock_id, unit) {
       var self = this, $ret_or_1 = nil, clock = nil;
       if (self.__clocks__ == null) self.__clocks__ = nil;
 
       
       
-      if (unit == null) {
-        unit = "float_second";
-      };
+      if (unit == null) unit = "float_second";;
       if ($truthy(($ret_or_1 = (clock = self.__clocks__['$[]'](clock_id))))) {
         $ret_or_1
       } else {
-        self.$raise($$$($$($nesting, 'Errno'), 'EINVAL'), "" + "clock_gettime(" + (clock_id) + ") " + (self.__clocks__['$[]'](clock_id)))
+        $Kernel.$raise($$$($$$('Errno'), 'EINVAL'), "clock_gettime(" + (clock_id) + ") " + (self.__clocks__['$[]'](clock_id)))
       };
       
       var ms = clock();
@@ -24551,50 +24020,17 @@ Opal.modules["corelib/process"] = function(Opal) {
         case 'millisecond':       return ((ms / 1)       | 0); // number of milliseconds as an integer
         case 'microsecond':       return ((ms * 1000)    | 0); // number of microseconds as an integer
         case 'nanosecond':        return ((ms * 1000000) | 0); // number of nanoseconds as an integer
-        default: self.$raise($$($nesting, 'ArgumentError'), "" + "unexpected unit: " + (unit))
+        default: $Kernel.$raise($$$('ArgumentError'), "unexpected unit: " + (unit))
       }
     ;
-    }, $Process_clock_gettime$4.$$arity = -2), nil) && 'clock_gettime';
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'Signal');
-
-    var $nesting = [self].concat($parent_nesting), $Signal_trap$5;
-
-    return (Opal.defs(self, '$trap', $Signal_trap$5 = function $$trap($a) {
-      var $post_args, self = this;
-
-      
-      
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
-      ;
-      return nil;
-    }, $Signal_trap$5.$$arity = -1), nil) && 'trap'
-  })($nesting[0], null, $nesting);
-  return (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'GC');
-
-    var $nesting = [self].concat($parent_nesting), $GC_start$6;
-
-    return (Opal.defs(self, '$start', $GC_start$6 = function $$start() {
-      var self = this;
-
-      return nil
-    }, $GC_start$6.$$arity = 0), nil) && 'start'
-  })($nesting[0], null, $nesting);
+    }, -2);
+  })('::')
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/random/formatter"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_divide(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs / rhs : lhs['$/'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $module = Opal.module, $send = Opal.send, $range = Opal.range;
+Opal.modules["corelib/random/formatter"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $module = Opal.module, $def = Opal.def, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $range = Opal.range, $rb_divide = Opal.rb_divide, $Kernel = Opal.Kernel, $Opal = Opal.Opal;
 
-  Opal.add_stubs(['$_verify_count', '$bytes', '$encode', '$strict_encode64', '$random_bytes', '$urlsafe_encode64', '$split', '$hex', '$[]=', '$-', '$[]', '$map', '$to_proc', '$join', '$times', '$<<', '$|', '$ord', '$/', '$abs', '$random_float', '$raise', '$coerce_to!', '$flatten', '$new', '$random_number', '$length', '$include', '$extend']);
+  Opal.add_stubs('_verify_count,bytes,encode,strict_encode64,random_bytes,urlsafe_encode64,split,hex,[]=,-,[],map,to_proc,join,times,<<,|,ord,/,abs,random_float,raise,coerce_to!,flatten,new,random_number,length,include,extend');
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Random');
 
@@ -24604,19 +24040,17 @@ Opal.modules["corelib/random/formatter"] = function(Opal) {
     (function($base, $parent_nesting) {
       var self = $module($base, 'Formatter');
 
-      var $nesting = [self].concat($parent_nesting), $Formatter_hex$1, $Formatter_random_bytes$2, $Formatter_base64$3, $Formatter_urlsafe_base64$4, $Formatter_uuid$5, $Formatter_random_float$6, $Formatter_random_number$8, $Formatter_alphanumeric$9;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
       
-      Opal.def(self, '$hex', $Formatter_hex$1 = function $$hex(count) {
+      $def(self, '$hex', function $$hex(count) {
         var self = this;
 
         
         
-        if (count == null) {
-          count = nil;
-        };
-        count = $$($nesting, 'Random').$_verify_count(count);
+        if (count == null) count = nil;;
+        count = $$$('Random').$_verify_count(count);
         
         var bytes = self.$bytes(count);
         var out = "";
@@ -24625,82 +24059,71 @@ Opal.modules["corelib/random/formatter"] = function(Opal) {
         }
         return (out).$encode("US-ASCII");
       ;
-      }, $Formatter_hex$1.$$arity = -1);
+      }, -1);
       
-      Opal.def(self, '$random_bytes', $Formatter_random_bytes$2 = function $$random_bytes(count) {
+      $def(self, '$random_bytes', function $$random_bytes(count) {
         var self = this;
 
         
         
-        if (count == null) {
-          count = nil;
-        };
+        if (count == null) count = nil;;
         return self.$bytes(count);
-      }, $Formatter_random_bytes$2.$$arity = -1);
+      }, -1);
       
-      Opal.def(self, '$base64', $Formatter_base64$3 = function $$base64(count) {
+      $def(self, '$base64', function $$base64(count) {
         var self = this;
 
         
         
-        if (count == null) {
-          count = nil;
-        };
-        return $$($nesting, 'Base64').$strict_encode64(self.$random_bytes(count)).$encode("US-ASCII");
-      }, $Formatter_base64$3.$$arity = -1);
+        if (count == null) count = nil;;
+        return $$$('Base64').$strict_encode64(self.$random_bytes(count)).$encode("US-ASCII");
+      }, -1);
       
-      Opal.def(self, '$urlsafe_base64', $Formatter_urlsafe_base64$4 = function $$urlsafe_base64(count, padding) {
+      $def(self, '$urlsafe_base64', function $$urlsafe_base64(count, padding) {
         var self = this;
 
         
         
-        if (count == null) {
-          count = nil;
-        };
+        if (count == null) count = nil;;
         
-        if (padding == null) {
-          padding = false;
-        };
-        return $$($nesting, 'Base64').$urlsafe_encode64(self.$random_bytes(count), padding).$encode("US-ASCII");
-      }, $Formatter_urlsafe_base64$4.$$arity = -1);
+        if (padding == null) padding = false;;
+        return $$$('Base64').$urlsafe_encode64(self.$random_bytes(count), padding).$encode("US-ASCII");
+      }, -1);
       
-      Opal.def(self, '$uuid', $Formatter_uuid$5 = function $$uuid() {
+      $def(self, '$uuid', function $$uuid() {
         var self = this, str = nil, $writer = nil;
 
         
         str = self.$hex(16).$split("");
         
         $writer = [12, "4"];
-        $send(str, '[]=', Opal.to_a($writer));
+        $send(str, '[]=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         
         $writer = [16, (parseInt(str['$[]'](16), 16) & 3 | 8).toString(16)];
-        $send(str, '[]=', Opal.to_a($writer));
+        $send(str, '[]=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         str = [str['$[]']($range(0, 8, true)), str['$[]']($range(8, 12, true)), str['$[]']($range(12, 16, true)), str['$[]']($range(16, 20, true)), str['$[]']($range(20, 32, true))];
         str = $send(str, 'map', [], "join".$to_proc());
         return str.$join("-");
-      }, $Formatter_uuid$5.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$random_float', $Formatter_random_float$6 = function $$random_float() {
-        var $$7, self = this, bs = nil, num = nil;
+      $def(self, '$random_float', function $$random_float() {
+        var self = this, bs = nil, num = nil;
 
         
         bs = self.$bytes(4);
         num = 0;
-        $send((4), 'times', [], ($$7 = function(i){var self = $$7.$$s == null ? this : $$7.$$s;
-
+        $send((4), 'times', [], function $$1(i){
           
           
-          if (i == null) {
-            i = nil;
-          };
+          if (i == null) i = nil;;
           num = num['$<<'](8);
-          return (num = num['$|'](bs['$[]'](i).$ord()));}, $$7.$$s = self, $$7.$$arity = 1, $$7));
+          return (num = num['$|'](bs['$[]'](i).$ord()));}, 1);
         return $rb_divide(num.$abs(), 2147483647);
-      }, $Formatter_random_float$6.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$random_number', $Formatter_random_number$8 = function $$random_number(limit) {
+      $def(self, '$random_number', function $$random_number(limit) {
         var self = this;
 
         
@@ -24744,200 +24167,52 @@ Opal.modules["corelib/random/formatter"] = function(Opal) {
         } else if (limit.$$is_range) {
           return randomRange();
         } else if (limit.$$is_number) {
-          if (limit <= 0) {
-            self.$raise($$($nesting, 'ArgumentError'), "" + "invalid argument - " + (limit))
-          }
-
-          if (limit % 1 === 0) {
-            // integer
-            return randomInt(limit);
-          } else {
-            return randomFloat() * limit;
-          }
-        } else {
-          limit = $$($nesting, 'Opal')['$coerce_to!'](limit, $$($nesting, 'Integer'), "to_int");
-
-          if (limit <= 0) {
-            self.$raise($$($nesting, 'ArgumentError'), "" + "invalid argument - " + (limit))
-          }
-
-          return randomInt(limit);
-        }
-      ;
-      }, $Formatter_random_number$8.$$arity = -1);
-      return (Opal.def(self, '$alphanumeric', $Formatter_alphanumeric$9 = function $$alphanumeric(count) {
-        var $$10, self = this, map = nil;
-
-        
-        
-        if (count == null) {
-          count = nil;
-        };
-        count = $$($nesting, 'Random').$_verify_count(count);
-        map = $send([$range("0", "9", false), $range("a", "z", false), $range("A", "Z", false)], 'map', [], "to_a".$to_proc()).$flatten();
-        return $send($$($nesting, 'Array'), 'new', [count], ($$10 = function(i){var self = $$10.$$s == null ? this : $$10.$$s;
-
-          
-          
-          if (i == null) {
-            i = nil;
-          };
-          return map['$[]'](self.$random_number(map.$length()));}, $$10.$$s = self, $$10.$$arity = 1, $$10)).$join();
-      }, $Formatter_alphanumeric$9.$$arity = -1), nil) && 'alphanumeric';
-    })($nesting[0], $nesting);
-    self.$include($$$($$($nesting, 'Random'), 'Formatter'));
-    return self.$extend($$$($$($nesting, 'Random'), 'Formatter'));
-  })($nesting[0], null, $nesting)
-};
-
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/random"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $falsy = Opal.falsy, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send;
-
-  Opal.add_stubs(['$attr_reader', '$to_int', '$raise', '$new_seed', '$coerce_to!', '$reseed', '$rand', '$seed', '$bytes', '$===', '$==', '$state', '$_verify_count', '$encode', '$join', '$new', '$chr', '$random_number', '$random_float', '$const_defined?', '$const_set']);
-  return (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'Random');
-
-    var $nesting = [self].concat($parent_nesting), $Random__verify_count$1, $Random_initialize$2, $Random_reseed$3, $Random_new_seed$4, $Random_rand$5, $Random_srand$6, $Random_urandom$7, $Random_$eq_eq$8, $Random_bytes$9, $Random_bytes$11, $Random_rand$12, $Random_random_float$13, $Random_random_float$14, $Random_generator$eq$15;
-
-    
-    self.$attr_reader("seed", "state");
-    Opal.defs(self, '$_verify_count', $Random__verify_count$1 = function $$_verify_count(count) {
-      var self = this;
-
-      
-      if ($falsy(count)) count = 16;
-      if (typeof count !== "number") count = (count).$to_int();
-      if (count < 0) self.$raise($$($nesting, 'ArgumentError'), "negative string size (or size too big)");
-      count = Math.floor(count);
-      return count;
-    
-    }, $Random__verify_count$1.$$arity = 1);
-    
-    Opal.def(self, '$initialize', $Random_initialize$2 = function $$initialize(seed) {
-      var self = this;
-
-      
-      
-      if (seed == null) {
-        seed = $$($nesting, 'Random').$new_seed();
-      };
-      seed = $$($nesting, 'Opal')['$coerce_to!'](seed, $$($nesting, 'Integer'), "to_int");
-      self.state = seed;
-      return self.$reseed(seed);
-    }, $Random_initialize$2.$$arity = -1);
-    
-    Opal.def(self, '$reseed', $Random_reseed$3 = function $$reseed(seed) {
-      var self = this;
-
-      
-      self.seed = seed;
-      return self.$rng = Opal.$$rand.reseed(seed);;
-    }, $Random_reseed$3.$$arity = 1);
-    Opal.defs(self, '$new_seed', $Random_new_seed$4 = function $$new_seed() {
-      var self = this;
-
-      return Opal.$$rand.new_seed();
-    }, $Random_new_seed$4.$$arity = 0);
-    Opal.defs(self, '$rand', $Random_rand$5 = function $$rand(limit) {
-      var self = this;
-
-      
-      ;
-      return $$($nesting, 'DEFAULT').$rand(limit);
-    }, $Random_rand$5.$$arity = -1);
-    Opal.defs(self, '$srand', $Random_srand$6 = function $$srand(n) {
-      var self = this, previous_seed = nil;
-
-      
-      
-      if (n == null) {
-        n = $$($nesting, 'Random').$new_seed();
-      };
-      n = $$($nesting, 'Opal')['$coerce_to!'](n, $$($nesting, 'Integer'), "to_int");
-      previous_seed = $$($nesting, 'DEFAULT').$seed();
-      $$($nesting, 'DEFAULT').$reseed(n);
-      return previous_seed;
-    }, $Random_srand$6.$$arity = -1);
-    Opal.defs(self, '$urandom', $Random_urandom$7 = function $$urandom(size) {
-      var self = this;
-
-      return $$$('::', 'SecureRandom').$bytes(size)
-    }, $Random_urandom$7.$$arity = 1);
-    
-    Opal.def(self, '$==', $Random_$eq_eq$8 = function(other) {
-      var self = this, $ret_or_1 = nil;
-
-      
-      if ($truthy($$($nesting, 'Random')['$==='](other))) {
-      } else {
-        return false
-      };
-      if ($truthy(($ret_or_1 = self.$seed()['$=='](other.$seed())))) {
-        return self.$state()['$=='](other.$state())
-      } else {
-        return $ret_or_1
-      };
-    }, $Random_$eq_eq$8.$$arity = 1);
-    
-    Opal.def(self, '$bytes', $Random_bytes$9 = function $$bytes(length) {
-      var $$10, self = this;
-
-      
-      length = $$($nesting, 'Random').$_verify_count(length);
-      return $send($$($nesting, 'Array'), 'new', [length], ($$10 = function(){var self = $$10.$$s == null ? this : $$10.$$s;
+          if (limit <= 0) {
+            $Kernel.$raise($$$('ArgumentError'), "invalid argument - " + (limit))
+          }
 
-        return self.$rand(255).$chr()}, $$10.$$s = self, $$10.$$arity = 0, $$10)).$join().$encode("ASCII-8BIT");
-    }, $Random_bytes$9.$$arity = 1);
-    Opal.defs(self, '$bytes', $Random_bytes$11 = function $$bytes(length) {
-      var self = this;
+          if (limit % 1 === 0) {
+            // integer
+            return randomInt(limit);
+          } else {
+            return randomFloat() * limit;
+          }
+        } else {
+          limit = $Opal['$coerce_to!'](limit, $$$('Integer'), "to_int");
 
-      return $$($nesting, 'DEFAULT').$bytes(length)
-    }, $Random_bytes$11.$$arity = 1);
-    
-    Opal.def(self, '$rand', $Random_rand$12 = function $$rand(limit) {
-      var self = this;
+          if (limit <= 0) {
+            $Kernel.$raise($$$('ArgumentError'), "invalid argument - " + (limit))
+          }
 
-      
+          return randomInt(limit);
+        }
       ;
-      return self.$random_number(limit);
-    }, $Random_rand$12.$$arity = -1);
-    
-    Opal.def(self, '$random_float', $Random_random_float$13 = function $$random_float() {
-      var self = this;
-
-      
-      self.state++;
-      return Opal.$$rand.rand(self.$rng);
-    
-    }, $Random_random_float$13.$$arity = 0);
-    Opal.defs(self, '$random_float', $Random_random_float$14 = function $$random_float() {
-      var self = this;
+      }, -1);
+      return $def(self, '$alphanumeric', function $$alphanumeric(count) {
+        var self = this, map = nil;
 
-      return $$($nesting, 'DEFAULT').$random_float()
-    }, $Random_random_float$14.$$arity = 0);
-    return (Opal.defs(self, '$generator=', $Random_generator$eq$15 = function(generator) {
-      var self = this;
+        
+        
+        if (count == null) count = nil;;
+        count = $$('Random').$_verify_count(count);
+        map = $send([$range("0", "9", false), $range("a", "z", false), $range("A", "Z", false)], 'map', [], "to_a".$to_proc()).$flatten();
+        return $send($$$('Array'), 'new', [count], function $$2(i){var self = $$2.$$s == null ? this : $$2.$$s;
 
-      
-      Opal.$$rand = generator;
-      if ($truthy(self['$const_defined?']("DEFAULT"))) {
-        return $$($nesting, 'DEFAULT').$reseed()
-      } else {
-        return self.$const_set("DEFAULT", self.$new(self.$new_seed()))
-      };
-    }, $Random_generator$eq$15.$$arity = 1), nil) && 'generator=';
-  })($nesting[0], null, $nesting)
+          
+          
+          if (i == null) i = nil;;
+          return map['$[]'](self.$random_number(map.$length()));}, {$$arity: 1, $$s: self}).$join();
+      }, -1);
+    })(self, $nesting);
+    self.$include($$$($$$('Random'), 'Formatter'));
+    return self.$extend($$$($$$('Random'), 'Formatter'));
+  })('::', null, $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/random/mersenne_twister"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $send = Opal.send, mersenne_twister = nil;
+Opal.modules["corelib/random/mersenne_twister"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $const_set = Opal.const_set, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, mersenne_twister = nil;
 
-  Opal.add_stubs(['$generator=', '$-']);
+  Opal.add_stubs('generator=,-');
   
   mersenne_twister = (function() {
   /* Period parameters */
@@ -25020,480 +24295,392 @@ Opal.modules["corelib/random/mersenne_twister"] = function(Opal) {
 
   return { genrand_real: genrand_real, init: init };
 })();
-  return (function($base, $super, $parent_nesting) {
+  return (function($base, $super) {
     var self = $klass($base, $super, 'Random');
 
-    var $nesting = [self].concat($parent_nesting), $writer = nil;
+    var $writer = nil;
 
     
     var MAX_INT = Number.MAX_SAFE_INTEGER || Math.pow(2, 53) - 1;
-    Opal.const_set($nesting[0], 'MERSENNE_TWISTER_GENERATOR', {
+    $const_set(self, 'MERSENNE_TWISTER_GENERATOR', {
     new_seed: function() { return Math.round(Math.random() * MAX_INT); },
     reseed: function(seed) { return mersenne_twister.init(seed); },
     rand: function(mt) { return mersenne_twister.genrand_real(mt); }
   });
     
-    $writer = [$$($nesting, 'MERSENNE_TWISTER_GENERATOR')];
-    $send(self, 'generator=', Opal.to_a($writer));
+    $writer = [$$$(self, 'MERSENNE_TWISTER_GENERATOR')];
+    $send(self, 'generator=', $to_a($writer));
     return $writer[$rb_minus($writer["length"], 1)];;
-  })($nesting[0], null, $nesting);
+  })('::', null);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/unsupported"] = function(Opal) {
-  var $public$35, $private$36, self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $module = Opal.module, $alias = Opal.alias;
+Opal.modules["corelib/random"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, nil = Opal.nil, $$$ = Opal.$$$, $truthy = Opal.truthy, $klass = Opal.klass, $Kernel = Opal.Kernel, $defs = Opal.defs, $Opal = Opal.Opal, $def = Opal.def, $eqeqeq = Opal.eqeqeq, $send = Opal.send;
 
-  Opal.add_stubs(['$raise', '$warn', '$%']);
+  Opal.add_stubs('require,attr_reader,to_int,raise,new_seed,coerce_to!,reseed,rand,seed,bytes,===,==,state,_verify_count,encode,join,new,chr,random_number,random_float,const_defined?,const_set');
   
-  
-  var warnings = {};
-
-  function handle_unsupported_feature(message) {
-    switch (Opal.config.unsupported_features_severity) {
-    case 'error':
-      $$($nesting, 'Kernel').$raise($$($nesting, 'NotImplementedError'), message)
-      break;
-    case 'warning':
-      warn(message)
-      break;
-    default: // ignore
-      // noop
-    }
-  }
-
-  function warn(string) {
-    if (warnings[string]) {
-      return;
-    }
-
-    warnings[string] = true;
-    self.$warn(string);
-  }
-;
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'String');
-
-    var $nesting = [self].concat($parent_nesting), $String_$lt$lt$1, $String_capitalize$excl$2, $String_chomp$excl$3, $String_chop$excl$4, $String_downcase$excl$5, $String_gsub$excl$6, $String_lstrip$excl$7, $String_next$excl$8, $String_reverse$excl$9, $String_slice$excl$10, $String_squeeze$excl$11, $String_strip$excl$12, $String_sub$excl$13, $String_succ$excl$14, $String_swapcase$excl$15, $String_tr$excl$16, $String_tr_s$excl$17, $String_upcase$excl$18, $String_prepend$19, $String_$$$eq$20, $String_clear$21, $String_encode$excl$22, $String_unicode_normalize$excl$23;
+  self.$require("corelib/random/formatter");
+  (function($base, $super) {
+    var self = $klass($base, $super, 'Random');
 
     
-    var ERROR = "String#%s not supported. Mutable String methods are not supported in Opal.";
     
-    Opal.def(self, '$<<', $String_$lt$lt$1 = function($a) {
-      var $post_args, self = this;
-
+    self.$attr_reader("seed", "state");
+    $defs(self, '$_verify_count', function $$_verify_count(count) {
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
-      ;
-      return self.$raise($$($nesting, 'NotImplementedError'), (ERROR)['$%']("<<"));
-    }, $String_$lt$lt$1.$$arity = -1);
+      if (!$truthy(count)) count = 16;
+      if (typeof count !== "number") count = (count).$to_int();
+      if (count < 0) $Kernel.$raise($$$('ArgumentError'), "negative string size (or size too big)");
+      count = Math.floor(count);
+      return count;
     
-    Opal.def(self, '$capitalize!', $String_capitalize$excl$2 = function($a) {
-      var $post_args, self = this;
-
-      
-      
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
-      ;
-      return self.$raise($$($nesting, 'NotImplementedError'), (ERROR)['$%']("capitalize!"));
-    }, $String_capitalize$excl$2.$$arity = -1);
+    }, 1);
     
-    Opal.def(self, '$chomp!', $String_chomp$excl$3 = function($a) {
-      var $post_args, self = this;
+    $def(self, '$initialize', function $$initialize(seed) {
+      var self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
-      ;
-      return self.$raise($$($nesting, 'NotImplementedError'), (ERROR)['$%']("chomp!"));
-    }, $String_chomp$excl$3.$$arity = -1);
+      if (seed == null) seed = $$$('Random').$new_seed();;
+      seed = $Opal['$coerce_to!'](seed, $$$('Integer'), "to_int");
+      self.state = seed;
+      return self.$reseed(seed);
+    }, -1);
     
-    Opal.def(self, '$chop!', $String_chop$excl$4 = function($a) {
-      var $post_args, self = this;
+    $def(self, '$reseed', function $$reseed(seed) {
+      var self = this;
 
       
+      self.seed = seed;
+      return self.$rng = Opal.$$rand.reseed(seed);;
+    }, 1);
+    $defs(self, '$new_seed', function $$new_seed() {
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
-      ;
-      return self.$raise($$($nesting, 'NotImplementedError'), (ERROR)['$%']("chop!"));
-    }, $String_chop$excl$4.$$arity = -1);
-    
-    Opal.def(self, '$downcase!', $String_downcase$excl$5 = function($a) {
-      var $post_args, self = this;
+      return Opal.$$rand.new_seed();
+    }, 0);
+    $defs(self, '$rand', function $$rand(limit) {
+      var self = this;
 
       
-      
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
       ;
-      return self.$raise($$($nesting, 'NotImplementedError'), (ERROR)['$%']("downcase!"));
-    }, $String_downcase$excl$5.$$arity = -1);
-    
-    Opal.def(self, '$gsub!', $String_gsub$excl$6 = function($a) {
-      var $post_args, self = this;
+      return $$$(self, 'DEFAULT').$rand(limit);
+    }, -1);
+    $defs(self, '$srand', function $$srand(n) {
+      var self = this, previous_seed = nil;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
-      ;
-      return self.$raise($$($nesting, 'NotImplementedError'), (ERROR)['$%']("gsub!"));
-    }, $String_gsub$excl$6.$$arity = -1);
-    
-    Opal.def(self, '$lstrip!', $String_lstrip$excl$7 = function($a) {
-      var $post_args, self = this;
-
-      
+      if (n == null) n = $$$('Random').$new_seed();;
+      n = $Opal['$coerce_to!'](n, $$$('Integer'), "to_int");
+      previous_seed = $$$(self, 'DEFAULT').$seed();
+      $$$(self, 'DEFAULT').$reseed(n);
+      return previous_seed;
+    }, -1);
+    $defs(self, '$urandom', function $$urandom(size) {
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
-      ;
-      return self.$raise($$($nesting, 'NotImplementedError'), (ERROR)['$%']("lstrip!"));
-    }, $String_lstrip$excl$7.$$arity = -1);
+      return $$$('SecureRandom').$bytes(size)
+    }, 1);
     
-    Opal.def(self, '$next!', $String_next$excl$8 = function($a) {
-      var $post_args, self = this;
+    $def(self, '$==', function $Random_$eq_eq$1(other) {
+      var self = this, $ret_or_1 = nil;
 
       
-      
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
-      ;
-      return self.$raise($$($nesting, 'NotImplementedError'), (ERROR)['$%']("next!"));
-    }, $String_next$excl$8.$$arity = -1);
+      if (!$eqeqeq($$$('Random'), other)) {
+        return false
+      };
+      if ($truthy(($ret_or_1 = self.$seed()['$=='](other.$seed())))) {
+        return self.$state()['$=='](other.$state())
+      } else {
+        return $ret_or_1
+      };
+    }, 1);
     
-    Opal.def(self, '$reverse!', $String_reverse$excl$9 = function($a) {
-      var $post_args, self = this;
+    $def(self, '$bytes', function $$bytes(length) {
+      var self = this;
 
       
-      
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
-      ;
-      return self.$raise($$($nesting, 'NotImplementedError'), (ERROR)['$%']("reverse!"));
-    }, $String_reverse$excl$9.$$arity = -1);
-    
-    Opal.def(self, '$slice!', $String_slice$excl$10 = function($a) {
-      var $post_args, self = this;
+      length = $$$('Random').$_verify_count(length);
+      return $send($$$('Array'), 'new', [length], function $$2(){var self = $$2.$$s == null ? this : $$2.$$s;
 
-      
-      
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
-      ;
-      return self.$raise($$($nesting, 'NotImplementedError'), (ERROR)['$%']("slice!"));
-    }, $String_slice$excl$10.$$arity = -1);
-    
-    Opal.def(self, '$squeeze!', $String_squeeze$excl$11 = function($a) {
-      var $post_args, self = this;
+        return self.$rand(255).$chr()}, {$$arity: 0, $$s: self}).$join().$encode("ASCII-8BIT");
+    }, 1);
+    $defs(self, '$bytes', function $$bytes(length) {
+      var self = this;
 
-      
-      
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
-      ;
-      return self.$raise($$($nesting, 'NotImplementedError'), (ERROR)['$%']("squeeze!"));
-    }, $String_squeeze$excl$11.$$arity = -1);
+      return $$$(self, 'DEFAULT').$bytes(length)
+    }, 1);
     
-    Opal.def(self, '$strip!', $String_strip$excl$12 = function($a) {
-      var $post_args, self = this;
+    $def(self, '$rand', function $$rand(limit) {
+      var self = this;
 
       
-      
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
       ;
-      return self.$raise($$($nesting, 'NotImplementedError'), (ERROR)['$%']("strip!"));
-    }, $String_strip$excl$12.$$arity = -1);
+      return self.$random_number(limit);
+    }, -1);
     
-    Opal.def(self, '$sub!', $String_sub$excl$13 = function($a) {
-      var $post_args, self = this;
+    $def(self, '$random_float', function $$random_float() {
+      var self = this;
 
       
-      
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
-      ;
-      return self.$raise($$($nesting, 'NotImplementedError'), (ERROR)['$%']("sub!"));
-    }, $String_sub$excl$13.$$arity = -1);
+      self.state++;
+      return Opal.$$rand.rand(self.$rng);
     
-    Opal.def(self, '$succ!', $String_succ$excl$14 = function($a) {
-      var $post_args, self = this;
+    }, 0);
+    $defs(self, '$random_float', function $$random_float() {
+      var self = this;
 
-      
-      
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
-      ;
-      return self.$raise($$($nesting, 'NotImplementedError'), (ERROR)['$%']("succ!"));
-    }, $String_succ$excl$14.$$arity = -1);
-    
-    Opal.def(self, '$swapcase!', $String_swapcase$excl$15 = function($a) {
-      var $post_args, self = this;
+      return $$$(self, 'DEFAULT').$random_float()
+    }, 0);
+    return $defs(self, '$generator=', function $Random_generator$eq$3(generator) {
+      var self = this;
 
       
-      
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
-      ;
-      return self.$raise($$($nesting, 'NotImplementedError'), (ERROR)['$%']("swapcase!"));
-    }, $String_swapcase$excl$15.$$arity = -1);
-    
-    Opal.def(self, '$tr!', $String_tr$excl$16 = function($a) {
-      var $post_args, self = this;
+      Opal.$$rand = generator;
+      if ($truthy(self['$const_defined?']("DEFAULT"))) {
+        return $$$(self, 'DEFAULT').$reseed()
+      } else {
+        return self.$const_set("DEFAULT", self.$new(self.$new_seed()))
+      };
+    }, 1);
+  })('::', null);
+  return self.$require("corelib/random/mersenne_twister");
+};
 
-      
-      
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
-      ;
-      return self.$raise($$($nesting, 'NotImplementedError'), (ERROR)['$%']("tr!"));
-    }, $String_tr$excl$16.$$arity = -1);
-    
-    Opal.def(self, '$tr_s!', $String_tr_s$excl$17 = function($a) {
-      var $post_args, self = this;
+Opal.modules["corelib/unsupported"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $Kernel = Opal.Kernel, $klass = Opal.klass, $send = Opal.send, $module = Opal.module, $def = Opal.def, $alias = Opal.alias, $defs = Opal.defs;
 
-      
-      
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
-      ;
-      return self.$raise($$($nesting, 'NotImplementedError'), (ERROR)['$%']("tr_s!"));
-    }, $String_tr_s$excl$17.$$arity = -1);
-    
-    Opal.def(self, '$upcase!', $String_upcase$excl$18 = function($a) {
-      var $post_args, self = this;
+  Opal.add_stubs('raise,warn,each,define_method,%');
+  
+  
+  var warnings = {};
 
-      
-      
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
-      ;
-      return self.$raise($$($nesting, 'NotImplementedError'), (ERROR)['$%']("upcase!"));
-    }, $String_upcase$excl$18.$$arity = -1);
-    
-    Opal.def(self, '$prepend', $String_prepend$19 = function $$prepend($a) {
-      var $post_args, self = this;
+  function handle_unsupported_feature(message) {
+    switch (Opal.config.unsupported_features_severity) {
+    case 'error':
+      $Kernel.$raise($$$('NotImplementedError'), message)
+      break;
+    case 'warning':
+      warn(message)
+      break;
+    default: // ignore
+      // noop
+    }
+  }
 
-      
-      
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
-      ;
-      return self.$raise($$($nesting, 'NotImplementedError'), (ERROR)['$%']("prepend"));
-    }, $String_prepend$19.$$arity = -1);
-    
-    Opal.def(self, '$[]=', $String_$$$eq$20 = function($a) {
-      var $post_args, self = this;
+  function warn(string) {
+    if (warnings[string]) {
+      return;
+    }
 
-      
-      
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
-      ;
-      return self.$raise($$($nesting, 'NotImplementedError'), (ERROR)['$%']("[]="));
-    }, $String_$$$eq$20.$$arity = -1);
-    
-    Opal.def(self, '$clear', $String_clear$21 = function $$clear($a) {
-      var $post_args, self = this;
+    warnings[string] = true;
+    self.$warn(string);
+  }
+;
+  (function($base, $super) {
+    var self = $klass($base, $super, 'String');
 
-      
-      
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
-      ;
-      return self.$raise($$($nesting, 'NotImplementedError'), (ERROR)['$%']("clear"));
-    }, $String_clear$21.$$arity = -1);
     
-    Opal.def(self, '$encode!', $String_encode$excl$22 = function($a) {
-      var $post_args, self = this;
+    
+    var ERROR = "String#%s not supported. Mutable String methods are not supported in Opal.";
+    return $send(["<<", "capitalize!", "chomp!", "chop!", "downcase!", "gsub!", "lstrip!", "next!", "reverse!", "slice!", "squeeze!", "strip!", "sub!", "succ!", "swapcase!", "tr!", "tr_s!", "upcase!", "prepend", "[]=", "clear", "encode!", "unicode_normalize!"], 'each', [], function $String$1(method_name){var self = $String$1.$$s == null ? this : $String$1.$$s;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
-      ;
-      return self.$raise($$($nesting, 'NotImplementedError'), (ERROR)['$%']("encode!"));
-    }, $String_encode$excl$22.$$arity = -1);
-    return (Opal.def(self, '$unicode_normalize!', $String_unicode_normalize$excl$23 = function($a) {
-      var $post_args, self = this;
+      if (method_name == null) method_name = nil;;
+      return $send(self, 'define_method', [method_name], function $$2($a){var $post_args, $rest_arg;
 
-      
-      
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
-      ;
-      return self.$raise($$($nesting, 'NotImplementedError'), (ERROR)['$%']("unicode_normalize!"));
-    }, $String_unicode_normalize$excl$23.$$arity = -1), nil) && 'unicode_normalize!';
-  })($nesting[0], null, $nesting);
-  (function($base, $parent_nesting) {
+        
+        
+        $post_args = Opal.slice.call(arguments);
+        
+        $rest_arg = $post_args;;
+        return $Kernel.$raise($$$('NotImplementedError'), (ERROR)['$%'](method_name));}, -1);}, {$$arity: 1, $$s: self});
+  })('::', null);
+  (function($base) {
     var self = $module($base, 'Kernel');
 
-    var $nesting = [self].concat($parent_nesting), $Kernel_freeze$24, $Kernel_frozen$ques$25;
-
+    
     
     var ERROR = "Object freezing is not supported by Opal";
     
-    Opal.def(self, '$freeze', $Kernel_freeze$24 = function $$freeze() {
+    $def(self, '$freeze', function $$freeze() {
       var self = this;
 
       
       handle_unsupported_feature(ERROR);
       return self;
-    }, $Kernel_freeze$24.$$arity = 0);
-    return (Opal.def(self, '$frozen?', $Kernel_frozen$ques$25 = function() {
-      var self = this;
-
+    }, 0);
+    return $def(self, '$frozen?', function $Kernel_frozen$ques$3() {
+      
       
       handle_unsupported_feature(ERROR);
       return false;
-    }, $Kernel_frozen$ques$25.$$arity = 0), nil) && 'frozen?';
-  })($nesting[0], $nesting);
-  (function($base, $parent_nesting) {
+    }, 0);
+  })('::');
+  (function($base) {
     var self = $module($base, 'Kernel');
 
-    var $nesting = [self].concat($parent_nesting), $Kernel_taint$26, $Kernel_untaint$27, $Kernel_tainted$ques$28;
-
+    
     
     var ERROR = "Object tainting is not supported by Opal";
     
-    Opal.def(self, '$taint', $Kernel_taint$26 = function $$taint() {
+    $def(self, '$taint', function $$taint() {
       var self = this;
 
       
       handle_unsupported_feature(ERROR);
       return self;
-    }, $Kernel_taint$26.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$untaint', $Kernel_untaint$27 = function $$untaint() {
+    $def(self, '$untaint', function $$untaint() {
       var self = this;
 
       
       handle_unsupported_feature(ERROR);
       return self;
-    }, $Kernel_untaint$27.$$arity = 0);
-    return (Opal.def(self, '$tainted?', $Kernel_tainted$ques$28 = function() {
-      var self = this;
-
+    }, 0);
+    return $def(self, '$tainted?', function $Kernel_tainted$ques$4() {
+      
       
       handle_unsupported_feature(ERROR);
       return false;
-    }, $Kernel_tainted$ques$28.$$arity = 0), nil) && 'tainted?';
-  })($nesting[0], $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 0);
+  })('::');
+  (function($base, $super) {
     var self = $klass($base, $super, 'Module');
 
-    var $nesting = [self].concat($parent_nesting), $Module_public$29, $Module_private_class_method$30, $Module_private_method_defined$ques$31, $Module_private_constant$32;
-
     
     
-    Opal.def(self, '$public', $Module_public$29 = function($a) {
+    
+    $def(self, '$public', function $Module_public$5($a) {
       var $post_args, methods, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       methods = $post_args;;
       
       if (methods.length === 0) {
         self.$$module_function = false;
+        return nil;
       }
-
-      return nil;
+      return (methods.length === 1) ? methods[0] : methods;
     ;
-    }, $Module_public$29.$$arity = -1);
-    $alias(self, "private", "public");
-    $alias(self, "protected", "public");
-    $alias(self, "nesting", "public");
+    }, -1);
     
-    Opal.def(self, '$private_class_method', $Module_private_class_method$30 = function $$private_class_method($a) {
-      var $post_args, self = this;
+    $def(self, '$private_class_method', function $$private_class_method($a) {
+      var $post_args, methods;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
-      ;
-      return self;
-    }, $Module_private_class_method$30.$$arity = -1);
-    $alias(self, "public_class_method", "private_class_method");
+      $post_args = Opal.slice.call(arguments);
+      
+      methods = $post_args;;
+      return (methods.length === 1) ? methods[0] : methods;;
+    }, -1);
     
-    Opal.def(self, '$private_method_defined?', $Module_private_method_defined$ques$31 = function(obj) {
-      var self = this;
-
+    $def(self, '$private_method_defined?', function $Module_private_method_defined$ques$6(obj) {
+      
       return false
-    }, $Module_private_method_defined$ques$31.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$private_constant', $Module_private_constant$32 = function $$private_constant($a) {
-      var $post_args, self = this;
+    $def(self, '$private_constant', function $$private_constant($a) {
+      var $post_args, $rest_arg;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
-      ;
+      $post_args = Opal.slice.call(arguments);
+      
+      $rest_arg = $post_args;;
       return nil;
-    }, $Module_private_constant$32.$$arity = -1);
+    }, -1);
+    $alias(self, "nesting", "public");
+    $alias(self, "private", "public");
+    $alias(self, "protected", "public");
     $alias(self, "protected_method_defined?", "private_method_defined?");
-    $alias(self, "public_instance_methods", "instance_methods");
+    $alias(self, "public_class_method", "private_class_method");
     $alias(self, "public_instance_method", "instance_method");
+    $alias(self, "public_instance_methods", "instance_methods");
     return $alias(self, "public_method_defined?", "method_defined?");
-  })($nesting[0], null, $nesting);
-  (function($base, $parent_nesting) {
+  })('::', null);
+  (function($base) {
     var self = $module($base, 'Kernel');
 
-    var $nesting = [self].concat($parent_nesting), $Kernel_private_methods$33;
-
     
     
-    Opal.def(self, '$private_methods', $Kernel_private_methods$33 = function $$private_methods($a) {
-      var $post_args, self = this;
+    
+    $def(self, '$private_methods', function $$private_methods($a) {
+      var $post_args, methods;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
-      ;
+      $post_args = Opal.slice.call(arguments);
+      
+      methods = $post_args;;
       return [];
-    }, $Kernel_private_methods$33.$$arity = -1);
+    }, -1);
     return $alias(self, "private_instance_methods", "private_methods");
-  })($nesting[0], $nesting);
+  })('::');
   (function($base, $parent_nesting) {
     var self = $module($base, 'Kernel');
 
-    var $nesting = [self].concat($parent_nesting), $Kernel_eval$34;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-    return (Opal.def(self, '$eval', $Kernel_eval$34 = function($a) {
-      var $post_args, self = this;
+    return $def(self, '$eval', function $Kernel_eval$7($a) {
+      var $post_args, $rest_arg;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
-      ;
-      return self.$raise($$($nesting, 'NotImplementedError'), "" + "To use Kernel#eval, you must first require 'opal-parser'. " + ("" + "See https://github.com/opal/opal/blob/" + ($$($nesting, 'RUBY_ENGINE_VERSION')) + "/docs/opal_parser.md for details."));
-    }, $Kernel_eval$34.$$arity = -1), nil) && 'eval'
-  })($nesting[0], $nesting);
-  Opal.defs(self, '$public', $public$35 = function($a) {
-    var $post_args, self = this;
+      $post_args = Opal.slice.call(arguments);
+      
+      $rest_arg = $post_args;;
+      return $Kernel.$raise($$$('NotImplementedError'), "To use Kernel#eval, you must first require 'opal-parser'. " + ("See https://github.com/opal/opal/blob/" + ($$('RUBY_ENGINE_VERSION')) + "/docs/opal_parser.md for details."));
+    }, -1)
+  })('::', $nesting);
+  $defs(self, '$public', function $public$8($a) {
+    var $post_args, methods;
 
     
     
-    $post_args = Opal.slice.call(arguments, 0, arguments.length);
-    ;
-    return nil;
-  }, $public$35.$$arity = -1);
-  return (Opal.defs(self, '$private', $private$36 = function($a) {
-    var $post_args, self = this;
+    $post_args = Opal.slice.call(arguments);
+    
+    methods = $post_args;;
+    return (methods.length === 1) ? methods[0] : methods;;
+  }, -1);
+  return $defs(self, '$private', function $private$9($a) {
+    var $post_args, methods;
 
     
     
-    $post_args = Opal.slice.call(arguments, 0, arguments.length);
-    ;
-    return nil;
-  }, $private$36.$$arity = -1), nil) && 'private';
+    $post_args = Opal.slice.call(arguments);
+    
+    methods = $post_args;;
+    return (methods.length === 1) ? methods[0] : methods;;
+  }, -1);
 };
 
-/* Generated by Opal 1.3.0.dev */
-(function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$;
+Opal.queue(function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var nil = Opal.nil, $Object = Opal.Object;
 
-  Opal.add_stubs(['$require']);
+  Opal.add_stubs('require,autoload');
   
-  self.$require("opal/base");
-  self.$require("opal/mini");
-  self.$require("corelib/kernel/format");
-  self.$require("corelib/string/encoding");
-  self.$require("corelib/math");
-  self.$require("corelib/complex");
-  self.$require("corelib/rational");
-  self.$require("corelib/time");
-  self.$require("corelib/struct");
-  self.$require("corelib/io");
-  self.$require("corelib/main");
-  self.$require("corelib/dir");
-  self.$require("corelib/file");
-  self.$require("corelib/process");
-  self.$require("corelib/random/formatter");
-  self.$require("corelib/random");
-  self.$require("corelib/random/mersenne_twister");
-  return self.$require("corelib/unsupported");
-})(Opal);
+  $Object.$require("opal/base");
+  $Object.$require("opal/mini");
+  $Object.$require("corelib/kernel/format");
+  $Object.$require("corelib/string/encoding");
+  $Object.$autoload("Math", "corelib/math");
+  $Object.$require("corelib/complex/base");
+  $Object.$autoload("Complex", "corelib/complex");
+  $Object.$require("corelib/rational/base");
+  $Object.$autoload("Rational", "corelib/rational");
+  $Object.$require("corelib/time");
+  $Object.$autoload("Struct", "corelib/struct");
+  $Object.$require("corelib/dir");
+  $Object.$autoload("File", "corelib/file");
+  $Object.$require("corelib/process/base");
+  $Object.$autoload("Process", "corelib/process");
+  $Object.$autoload("Random", "corelib/random");
+  return $Object.$require("corelib/unsupported");
+});
diff --git a/opal/master/opal.min.js b/opal/master/opal.min.js
index 84abccae..a1221690 100644
--- a/opal/master/opal.min.js
+++ b/opal/master/opal.min.js
@@ -1 +1 @@
-(function(Module){"use strict";var console,nil,BasicObject,_Object,Class;if("undefined"!=typeof globalThis?Module=globalThis:"undefined"!=typeof global?Module=global:"undefined"!=typeof window&&(Module=window),"log"in(console="object"==typeof Module.console?Module.console:null==Module.console?Module.console={}:{})||(console.log=function(){}),"warn"in console||(console.warn=console.log),void 0!==Module.Opal)return console.warn("Opal already loaded. 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i,ii,ancestors;if(null!=cref)for(i=0,ii=(ancestors=Opal.ancestors(cref)).length;i<ii;i++)if(ancestors[i].$$const&&$has_own.call(ancestors[i].$$const,name))return ancestors[i].$$const[name]}function const_missing(cref,name,skip_missing){if(!skip_missing)return(cref||_Object).$const_missing(name)}function isRoot(proto){return proto.hasOwnProperty("$$iclass")&&proto.hasOwnProperty("$$root")}function create_iclass(module){var iclass=create_dummy_iclass(module);return module.$$is_module&&module.$$iclasses.push(iclass),iclass}function create_dummy_iclass(module){var iclass={},proto=module.$$prototype;proto.hasOwnProperty("$$dummy")&&(proto=proto.$$define_methods_on);for(var props=Object.getOwnPropertyNames(proto),length=props.length,i=0;i<length;i++){var prop=props[i];$defineProperty(iclass,prop,proto[prop])}return $defineProperty(iclass,"$$iclass",!0),$defineProperty(iclass,"$$module",module),iclass}function chain_iclasses(iclasses){var length=iclasses.length,first=iclasses[0];if($defineProperty(first,"$$root",!0),1===length)return{first:first,last:first};for(var previous=first,i=1;i<length;i++){var current=iclasses[i];$set_proto(previous,current),previous=current}return{first:iclasses[0],last:iclasses[length-1]}}function protoToModule(proto){if(!proto.hasOwnProperty("$$dummy"))return proto.hasOwnProperty("$$iclass")?proto.$$module:proto.hasOwnProperty("$$class")?proto.$$class:void 0}function is_method_body(body){return"function"==typeof body&&!body.$$stub}function top_define_method(){var args=Opal.slice.call(arguments,0,arguments.length),block=top_define_method.$$p;return top_define_method.$$p=null,Opal.send(_Object,"define_method",args,block)}Opal.uid=function(){return unique_id+=2},Opal.id=function(obj){return obj.$$is_number?2*obj+1:(null!=obj.$$id||$defineProperty(obj,"$$id",Opal.uid()),obj.$$id)},Opal.gvars={},Opal.exit=function(status){Opal.gvars.DEBUG&&console.log("Exited with status 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result,cache,cached,current_version=Opal.const_cache_version;if(null!=cref){if("::"===cref&&(cref=_Object),!cref.$$is_module&&!cref.$$is_class)throw new Opal.TypeError(cref.toString()+" is not a class/module");return null==(cache=cref.$$const_cache)&&($defineProperty(cref,"$$const_cache",Object.create(null)),cache=cref.$$const_cache),null==(cached=cache[name])||cached[0]!==current_version?(null!=(result=const_get_name(cref,name))||(result=const_lookup_ancestors(cref,name)),cache[name]=[current_version,result]):result=cached[1],null!=result?result:const_missing(cref,name,skip_missing)}},Opal.const_cache_version=1,Opal.const_get_relative=function(nesting,name,skip_missing){var result,cache,cached,cref=nesting[0],current_version=Opal.const_cache_version;return null==(cache=nesting.$$const_cache)&&($defineProperty(nesting,"$$const_cache",Object.create(null)),cache=nesting.$$const_cache),null==(cached=cache[name])||cached[0]!==current_version?(null!=(result=const_get_name(cref,name))||null!=(result=function(nesting,name){var i,ii,constant;if(0!==nesting.length)for(i=0,ii=nesting.length;i<ii;i++)if(null!=(constant=nesting[i].$$const[name]))return constant}(nesting,name))||null!=(result=const_lookup_ancestors(cref,name))||(result=function(cref,name){if(null==cref||cref.$$is_module)return const_lookup_ancestors(_Object,name)}(cref,name)),cache[name]=[current_version,result]):result=cached[1],null!=result?result:const_missing(cref,name,skip_missing)},Opal.const_set=function(cref,name,value){return null!=cref&&"::"!==cref||(cref=_Object),value.$$is_a_module&&(null!=value.$$name&&value.$$name!==nil||(value.$$name=name),null==value.$$base_module&&(value.$$base_module=cref)),cref.$$const=cref.$$const||Object.create(null),cref.$$const[name]=value,cref.$$=cref.$$const,Opal.const_cache_version++,cref===_Object&&(Opal[name]=value),$defineProperty(cref,name,value),value},Opal.constants=function(cref,inherit){null==inherit&&(inherit=!0);var module,i,ii,constant,modules=[cref],constants={};for(inherit&&(modules=modules.concat(Opal.ancestors(cref))),inherit&&cref.$$is_module&&(modules=modules.concat([Opal.Object]).concat(Opal.ancestors(Opal.Object))),i=0,ii=modules.length;i<ii&&(module=modules[i],cref===_Object||module!=_Object);i++)for(constant in module.$$const)constants[constant]=!0;return Object.keys(constants)},Opal.const_remove=function(cref,name){if(Opal.const_cache_version++,null!=cref.$$const[name]){var old=cref.$$const[name];return delete 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name&&$defineProperty(constructor,"displayName","::"+name),$defineProperty(klass=constructor,"$$name",name),$defineProperty(klass,"$$constructor",constructor),$defineProperty(klass,"$$prototype",constructor.prototype),$defineProperty(klass,"$$const",{}),$defineProperty(klass,"$$is_class",!0),$defineProperty(klass,"$$is_a_module",!0),$defineProperty(klass,"$$super",superclass),$defineProperty(klass,"$$cvars",{}),$defineProperty(klass,"$$own_included_modules",[]),$defineProperty(klass,"$$own_prepended_modules",[]),$defineProperty(klass,"$$ancestors",[]),$defineProperty(klass,"$$ancestors_cache_version",null),$defineProperty(klass.$$prototype,"$$class",klass),Opal.Class&&$set_proto(klass,Opal.Class.prototype),null!=superclass&&($set_proto(klass.$$prototype,superclass.$$prototype),superclass.$$meta&&Opal.build_class_singleton_class(klass)),klass},Opal.klass=function(scope,superclass,name){var bridged;if(null==scope||"::"==scope?scope=_Object:scope.$$is_class||scope.$$is_module||(scope=scope.$$class),null!=superclass&&(!superclass.hasOwnProperty||superclass.hasOwnProperty&&!superclass.hasOwnProperty("$$is_class"))){if(!superclass.constructor||"Function"!=superclass.constructor.name)throw Opal.TypeError.$new("superclass must be a Class ("+(superclass.constructor&&(superclass.constructor.name||superclass.constructor.$$name)||typeof superclass)+" given)");bridged=superclass,superclass=_Object}var klass=function(klass,name){if(klass=const_get_name(klass,name)){if(!klass.$$is_class)throw Opal.TypeError.$new(name+" is not a class");return klass}}(scope,name);return klass?superclass&&function(klass,superclass){if(klass.$$super!==superclass)throw Opal.TypeError.$new("superclass mismatch for class 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name&&$defineProperty(constructor,"displayName",name+".constructor"),$defineProperty(module,"$$name",name),$defineProperty(module,"$$prototype",constructor.prototype),$defineProperty(module,"$$const",{}),$defineProperty(module,"$$is_module",!0),$defineProperty(module,"$$is_a_module",!0),$defineProperty(module,"$$cvars",{}),$defineProperty(module,"$$iclasses",[]),$defineProperty(module,"$$own_included_modules",[]),$defineProperty(module,"$$own_prepended_modules",[]),$defineProperty(module,"$$ancestors",[module]),$defineProperty(module,"$$ancestors_cache_version",null),$set_proto(module,Opal.Module.prototype),module},Opal.module=function(scope,name){var module;return null==scope||"::"==scope?scope=_Object:scope.$$is_class||scope.$$is_module||(scope=scope.$$class),(module=function(scope,name){var module=const_get_name(scope,name);if(null==module&&scope===_Object&&(module=const_lookup_ancestors(_Object,name)),module&&!module.$$is_module&&module!==_Object)throw Opal.TypeError.$new(name+" is 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mod,result=[],proto=Object.getPrototypeOf(module.$$prototype);if(module.$$prototype.hasOwnProperty("$$dummy"))for(;proto&&proto!==module.$$prototype.$$define_methods_on;)(mod=protoToModule(proto))&&result.push(mod),proto=Object.getPrototypeOf(proto);return result}(prepender),Opal.const_cache_version++},Opal.bridge=function(native_klass,klass){if(native_klass.hasOwnProperty("$$bridge"))throw Opal.ArgumentError.$new("already bridged");$defineProperty(native_klass,"$$bridge",klass),$set_proto(native_klass.prototype,(klass.$$super||Opal.Object).$$prototype),$defineProperty(klass,"$$prototype",native_klass.prototype),$defineProperty(klass.$$prototype,"$$class",klass),$defineProperty(klass,"$$constructor",native_klass),$defineProperty(klass,"$$bridge",!0)},Opal.ancestors=function(module){if(!module)return[];if(module.$$ancestors_cache_version===Opal.const_cache_version)return module.$$ancestors;for(var result=[],i=0,mods=function(module){return 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body=this.$$class.$$prototype["$"+method];return $truthy(void 0!==body&&!body.$$stub)||$send2(this,$find_super(this,"method_missing",$Boolean_method_missing$12,!1,!0),"method_missing",$zuper,$iter),Opal.send(this,body,args,block)},$Boolean_method_missing$12.$$arity=-2),Opal.def(self,"$respond_to_missing?",$Boolean_respond_to_missing$ques$13=function(body,_include_all){null==_include_all&&(_include_all=!1);body=this.$$class.$$prototype["$"+body];return void 0!==body&&!body.$$stub},$Boolean_respond_to_missing$ques$13.$$arity=-2)}($nesting[0],Boolean,$nesting),$base=$nesting[0],$super=$$($nesting,"Boolean"),$parent_nesting=$nesting,[$klass($base,$super,"TrueClass")].concat($parent_nesting),function($base,$super,$parent_nesting){[$klass($base,$super,"FalseClass")].concat($parent_nesting)}($nesting[0],$$($nesting,"Boolean"),$nesting),Opal.const_set($nesting[0],"TRUE",!0),Opal.const_set($nesting[0],"FALSE",!1)},Opal.modules["corelib/comparable"]=function(Opal){function $rb_gt(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?rhs<lhs:lhs["$>"](rhs)}function $rb_lt(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs<rhs:lhs["$<"](rhs)}Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$falsy=Opal.falsy,$module=Opal.module,$truthy=Opal.truthy;return Opal.add_stubs(["$>","$<","$===","$raise","$class","$<=>","$equal?"]),function($base,$Comparable_clamp$7){var self=$module($base,"Comparable"),$nesting=[self].concat($Comparable_clamp$7),$case=nil;function normalize(what){return Opal.is_a(what,Opal.Integer)?what:$rb_gt(what,0)?1:$rb_lt(what,0)?-1:0}function cmp_or_fail(lhs,rhs){var cmp=lhs["$<=>"](rhs);return $falsy(cmp)&&function(lhs,class_name){$case=class_name,class_name=nil["$==="]($case)||(!0)["$==="]($case)||(!1)["$==="]($case)||$$($nesting,"Integer")["$==="]($case)||$$($nesting,"Float")["$==="]($case)?class_name.$inspect():class_name.$$class,self.$raise($$($nesting,"ArgumentError"),"comparison of "+lhs.$class()+" with "+class_name+" failed")}(lhs,rhs),normalize(cmp)}return Opal.def(self,"$==",$Comparable_clamp$7=function(other){var cmp;return!!$truthy(this["$equal?"](other))||this["$<=>"]!=Opal.Kernel["$<=>"]&&(this.$$comparable?(delete this.$$comparable,!1):!!$truthy(cmp=this["$<=>"](other))&&0==normalize(cmp))},$Comparable_clamp$7.$$arity=1),Opal.def(self,"$>",$Comparable_clamp$7=function(other){return 0<cmp_or_fail(this,other)},$Comparable_clamp$7.$$arity=1),Opal.def(self,"$>=",$Comparable_clamp$7=function(other){return 0<=cmp_or_fail(this,other)},$Comparable_clamp$7.$$arity=1),Opal.def(self,"$<",$Comparable_clamp$7=function(other){return cmp_or_fail(this,other)<0},$Comparable_clamp$7.$$arity=1),Opal.def(self,"$<=",$Comparable_clamp$7=function(other){return cmp_or_fail(this,other)<=0},$Comparable_clamp$7.$$arity=1),Opal.def(self,"$between?",$Comparable_clamp$7=function(min,max){return!$rb_lt(this,min)&&!$rb_gt(this,max)},$Comparable_clamp$7.$$arity=2),Opal.def(self,"$clamp",$Comparable_clamp$7=function(min,max){var c,excl;if(null==max&&(max=nil),max===nil&&(Opal.is_a(min,Opal.Range)||this.$raise($$($nesting,"TypeError"),"wrong argument type "+min.$class()+" (expected Range)"),excl=min.excl,max=min.end,min=min.begin,max!==nil&&excl&&this.$raise($$($nesting,"ArgumentError"),"cannot clamp with an exclusive range")),min!==nil&&max!==nil&&0<cmp_or_fail(min,max)&&this.$raise($$($nesting,"ArgumentError"),"min argument must be smaller than max argument"),min!==nil){if(0==(c=cmp_or_fail(this,min)))return this;if(c<0)return min}return max!==nil&&0<(c=cmp_or_fail(this,max))?max:this},$Comparable_clamp$7.$$arity=-2),nil&&"clamp"}($nesting[0],$nesting)},Opal.modules["corelib/regexp"]=function(Opal){Opal.top;var $base,$super,$parent_nesting,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$coerce_to=Opal.coerce_to,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$truthy=Opal.truthy,$gvars=Opal.gvars,$alias=Opal.alias,$send=Opal.send;return Opal.add_stubs(["$nil?","$[]","$raise","$escape","$options","$to_str","$new","$join","$coerce_to!","$!","$match","$coerce_to?","$begin","$uniq","$map","$scan","$source","$to_proc","$transform_values","$group_by","$each_with_index","$+","$last","$=~","$attr_reader","$include?","$names","$regexp","$named_captures","$===","$captures","$-","$inspect","$empty?","$each","$to_a"]),$base=$nesting[0],$super=$$($nesting,"StandardError"),$parent_nesting=$nesting,[$klass($base,$super,"RegexpError")].concat($parent_nesting),function($base,self,$Regexp_casefold$ques$19){var $Regexp_match$10,$nesting=[self=$klass($base,self,"Regexp")].concat($Regexp_casefold$ques$19);Opal.const_set($nesting[0],"IGNORECASE",1),Opal.const_set($nesting[0],"EXTENDED",2),Opal.const_set($nesting[0],"MULTILINE",4),Opal.defineProperty(self.$$prototype,"$$is_regexp",!0),function(self,$new$5){var $allocate$1,$nesting=[self].concat($new$5);Opal.def(self,"$allocate",$allocate$1=function(){var $zuper_ii,$iter=$allocate$1.$$p,allocated=nil,$zuper=nil,$zuper_i=nil;for($iter&&($allocate$1.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return(allocated=$send2(this,$find_super(this,"allocate",$allocate$1,!1,!0),"allocate",$zuper,$iter)).uninitialized=!0,allocated},$allocate$1.$$arity=0),Opal.def(self,"$escape",$new$5=function(string){return Opal.escape_regexp(string)},$new$5.$$arity=1),Opal.def(self,"$last_match",$new$5=function(n){return null==$gvars["~"]&&($gvars["~"]=nil),null==n&&(n=nil),$truthy(n["$nil?"]())?$gvars["~"]:$gvars["~"]["$[]"](n)},$new$5.$$arity=-1),$alias(self,"quote","escape"),Opal.def(self,"$union",$new$5=function($a){var is_first_part_array,quoted_validated,part,options,each_part_options,parts=Opal.slice.call(arguments,0,arguments.length);if(0==parts.length)return/(?!)/;if(1==parts.length&&parts[0].$$is_regexp)return parts[0];is_first_part_array=parts[0].$$is_array,1<parts.length&&is_first_part_array&&this.$raise($$($nesting,"TypeError"),"no implicit conversion of Array into String"),is_first_part_array&&(parts=parts[0]),options=void 0,quoted_validated=[];for(var i=0;i<parts.length;i++)(part=parts[i]).$$is_string?quoted_validated.push(this.$escape(part)):part.$$is_regexp?(each_part_options=part.$options(),null!=options&&options!=each_part_options&&this.$raise($$($nesting,"TypeError"),"All expressions must use the same 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RegExp&&this.toString()===other.toString()},$Regexp_casefold$ques$19.$$arity=1),Opal.def(self,"$===",$Regexp_casefold$ques$19=function(string){return this.$match($$($nesting,"Opal")["$coerce_to?"](string,$$($nesting,"String"),"to_str"))!==nil},$Regexp_casefold$ques$19.$$arity=1),Opal.def(self,"$=~",$Regexp_casefold$ques$19=function(string){var $ret_or_1;return null==$gvars["~"]&&($gvars["~"]=nil),$truthy($ret_or_1=this.$match(string))?$gvars["~"].$begin(0):$ret_or_1},$Regexp_casefold$ques$19.$$arity=1),$alias(self,"eql?","=="),Opal.def(self,"$inspect",$Regexp_casefold$ques$19=function(){var value=this.toString(),regexp_flags=/^\/(.*)\/([^\/]*)$/.exec(value);if(regexp_flags){for(var regexp_pattern=regexp_flags[1],regexp_flags=regexp_flags[2],chars=regexp_pattern.split(""),chars_length=chars.length,char_escaped=!1,regexp_pattern_escaped="",i=0;i<chars_length;i++){var current_char=chars[i];char_escaped||"/"!=current_char||(regexp_pattern_escaped=regexp_pattern_escaped.concat("\\")),regexp_pattern_escaped=regexp_pattern_escaped.concat(current_char),char_escaped="\\"==current_char&&!char_escaped}return"/"+regexp_pattern_escaped+"/"+regexp_flags}return value},$Regexp_casefold$ques$19.$$arity=0),Opal.def(self,"$match",$Regexp_match$10=function(string,pos){var m=$Regexp_match$10.$$p,block=m||nil;if(null==$gvars["~"]&&($gvars["~"]=nil),m&&($Regexp_match$10.$$p=null),m&&($Regexp_match$10.$$p=null),this.uninitialized&&this.$raise($$($nesting,"TypeError"),"uninitialized Regexp"),void 0===pos){if(string===nil)return $gvars["~"]=nil;m=this.exec($coerce_to(string,$$($nesting,"String"),"to_str"));return m?($gvars["~"]=$$($nesting,"MatchData").$new(this,m),block===nil?$gvars["~"]:Opal.yield1(block,$gvars["~"])):$gvars["~"]=nil}if(pos=$coerce_to(pos,$$($nesting,"Integer"),"to_int"),string===nil)return $gvars["~"]=nil;if(string=$coerce_to(string,$$($nesting,"String"),"to_str"),pos<0&&(pos+=string.length)<0)return $gvars["~"]=nil;for(var md,re=Opal.global_regexp(this);;){if(null===(md=re.exec(string)))return $gvars["~"]=nil;if(md.index>=pos)return $gvars["~"]=$$($nesting,"MatchData").$new(re,md),block===nil?$gvars["~"]:Opal.yield1(block,$gvars["~"]);re.lastIndex=md.index+1}},$Regexp_match$10.$$arity=-2),Opal.def(self,"$match?",$Regexp_casefold$ques$19=function(md,pos){if(this.uninitialized&&this.$raise($$($nesting,"TypeError"),"uninitialized Regexp"),void 0===pos)return md!==nil&&this.test($coerce_to(md,$$($nesting,"String"),"to_str"));if(pos=$coerce_to(pos,$$($nesting,"Integer"),"to_int"),md===nil)return!1;if(md=$coerce_to(md,$$($nesting,"String"),"to_str"),pos<0&&(pos+=md.length)<0)return!1;md=Opal.global_regexp(this).exec(md);return!(null===md||md.index<pos)},$Regexp_casefold$ques$19.$$arity=-2),Opal.def(self,"$names",$Regexp_casefold$ques$19=function(){return $send(this.$source().$scan(/\(?<(\w+)>/),"map",[],"first".$to_proc()).$uniq()},$Regexp_casefold$ques$19.$$arity=0),Opal.def(self,"$named_captures",$Regexp_casefold$ques$19=function(){var $$14;return $send($send($send(this.$source().$scan(/\(?<(\w+)>/),"map",[],"first".$to_proc()).$each_with_index(),"group_by",[],"first".$to_proc()),"transform_values",[],(($$14=function(i){var $$15,self=null==$$14.$$s?this:$$14.$$s;return null==i&&(i=nil),$send(i,"map",[],(($$15=function(rhs){var lhs;null==$$15.$$s||$$15.$$s;return null==rhs&&(rhs=nil),lhs=rhs.$last(),rhs=1,"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}).$$s=self,$$15.$$arity=1,$$15))}).$$s=this,$$14.$$arity=1,$$14))},$Regexp_casefold$ques$19.$$arity=0),Opal.def(self,"$~",$Regexp_casefold$ques$19=function(){return null==$gvars._&&($gvars._=nil),this["$=~"]($gvars._)},$Regexp_casefold$ques$19.$$arity=0),Opal.def(self,"$source",$Regexp_casefold$ques$19=function(){return this.source},$Regexp_casefold$ques$19.$$arity=0),Opal.def(self,"$options",$Regexp_casefold$ques$19=function(){this.uninitialized&&this.$raise($$($nesting,"TypeError"),"uninitialized Regexp");var result=0;return this.multiline&&(result|=$$($nesting,"MULTILINE")),this.ignoreCase&&(result|=$$($nesting,"IGNORECASE")),result},$Regexp_casefold$ques$19.$$arity=0),Opal.def(self,"$casefold?",$Regexp_casefold$ques$19=function(){return this.ignoreCase},$Regexp_casefold$ques$19.$$arity=0),$alias(self,"to_s","source")}($nesting[0],RegExp,$nesting),function($MatchData_values_at$35,$MatchData_to_s$34){var $MatchData_values_at$35=$klass($MatchData_values_at$35,null,"MatchData"),$nesting=[$MatchData_values_at$35].concat($MatchData_to_s$34);return $MatchData_values_at$35.$$prototype.matches=nil,$MatchData_values_at$35.$attr_reader("post_match","pre_match","regexp","string"),Opal.def($MatchData_values_at$35,"$initialize",$MatchData_to_s$34=function(regexp,match_groups){($gvars["~"]=this).regexp=regexp,this.begin=match_groups.index,this.string=match_groups.input,this.pre_match=match_groups.input.slice(0,match_groups.index),this.post_match=match_groups.input.slice(match_groups.index+match_groups[0].length),this.matches=[];for(var i=0,length=match_groups.length;i<length;i++){var group=match_groups[i];null==group?this.matches.push(nil):this.matches.push(group)}},$MatchData_to_s$34.$$arity=2),Opal.def($MatchData_values_at$35,"$[]",$MatchData_to_s$34=function($a){var args=Opal.slice.call(arguments,0,arguments.length);return args[0].$$is_string?(this.$regexp().$names()["$include?"](args["$[]"](0))["$!"]()&&this.$raise($$($nesting,"IndexError"),"undefined group name reference: "+args["$[]"](0)),this.$named_captures()["$[]"](args["$[]"](0))):$send(this.matches,"[]",Opal.to_a(args))},$MatchData_to_s$34.$$arity=-1),Opal.def($MatchData_values_at$35,"$offset",$MatchData_to_s$34=function(n){return 0!==n&&this.$raise($$($nesting,"ArgumentError"),"MatchData#offset only supports 0th element"),[this.begin,this.begin+this.matches[n].length]},$MatchData_to_s$34.$$arity=1),Opal.def($MatchData_values_at$35,"$==",$MatchData_to_s$34=function(other){var $ret_or_2,self=this,$ret_or_3=nil,$ret_or_4=nil,$ret_or_5=nil;return!!$truthy($$($nesting,"MatchData")["$==="](other))&&($truthy($ret_or_2=$truthy($ret_or_3=$truthy($ret_or_4=$truthy($ret_or_5=self.string==other.string)?self.regexp.toString()==other.regexp.toString():$ret_or_5)?self.pre_match==other.pre_match:$ret_or_4)?self.post_match==other.post_match:$ret_or_3)?self.begin==other.begin:$ret_or_2)},$MatchData_to_s$34.$$arity=1),$alias($MatchData_values_at$35,"eql?","=="),Opal.def($MatchData_values_at$35,"$begin",$MatchData_to_s$34=function(n){return 0!==n&&this.$raise($$($nesting,"ArgumentError"),"MatchData#begin only supports 0th element"),this.begin},$MatchData_to_s$34.$$arity=1),Opal.def($MatchData_values_at$35,"$end",$MatchData_to_s$34=function(n){return 0!==n&&this.$raise($$($nesting,"ArgumentError"),"MatchData#end only supports 0th element"),this.begin+this.matches[n].length},$MatchData_to_s$34.$$arity=1),Opal.def($MatchData_values_at$35,"$captures",$MatchData_to_s$34=function(){return this.matches.slice(1)},$MatchData_to_s$34.$$arity=0),Opal.def($MatchData_values_at$35,"$named_captures",$MatchData_to_s$34=function(){var $$28,matches=nil,matches=this.$captures();return $send(this.$regexp().$named_captures(),"transform_values",[],(($$28=function(rhs){var lhs;null==$$28.$$s||$$28.$$s;return null==rhs&&(rhs=nil),matches["$[]"]((lhs=rhs.$last(),rhs=1,"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)))}).$$s=this,$$28.$$arity=1,$$28))},$MatchData_to_s$34.$$arity=0),Opal.def($MatchData_values_at$35,"$names",$MatchData_to_s$34=function(){return this.$regexp().$names()},$MatchData_to_s$34.$$arity=0),Opal.def($MatchData_values_at$35,"$inspect",$MatchData_to_s$34=function(){var $$31,str="#<MatchData "+this.matches[0].$inspect();if(this.$regexp().$names()["$empty?"]())for(var i=1,length=this.matches.length;i<length;i++)str+=" "+i+":"+this.matches[i].$inspect();else $send(this.$named_captures(),"each",[],(($$31=function(k,v){null==$$31.$$s||$$31.$$s;return null==k&&(k=nil),null==v&&(v=nil),str+=" "+k+":"+v.$inspect()}).$$s=this,$$31.$$arity=2,$$31));return str+">"},$MatchData_to_s$34.$$arity=0),Opal.def($MatchData_values_at$35,"$length",$MatchData_to_s$34=function(){return this.matches.length},$MatchData_to_s$34.$$arity=0),$alias($MatchData_values_at$35,"size","length"),Opal.def($MatchData_values_at$35,"$to_a",$MatchData_to_s$34=function(){return this.matches},$MatchData_to_s$34.$$arity=0),Opal.def($MatchData_values_at$35,"$to_s",$MatchData_to_s$34=function(){return this.matches[0]},$MatchData_to_s$34.$$arity=0),Opal.def($MatchData_values_at$35,"$values_at",$MatchData_values_at$35=function($a){for(var index,args=Opal.slice.call(arguments,0,arguments.length),values=[],i=0;i<args.length;i++)args[i].$$is_range&&((index=args[i].$to_a()).unshift(i,1),Array.prototype.splice.apply(args,index)),(index=$$($nesting,"Opal")["$coerce_to!"](args[i],$$($nesting,"Integer"),"to_int"))<0&&(index+=this.matches.length)<0?values.push(nil):values.push(this.matches[index]);return values},$MatchData_values_at$35.$$arity=-1),nil&&"values_at"}($nesting[0],$nesting)},Opal.modules["corelib/string"]=function(Opal){function $rb_divide(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs/rhs:lhs["$/"](rhs)}function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$coerce_to=Opal.coerce_to,$respond_to=Opal.respond_to,$klass=Opal.klass,$alias=Opal.alias,$send=Opal.send,$hash2=Opal.hash2,$truthy=Opal.truthy,$gvars=Opal.gvars;return Opal.add_stubs(["$require","$include","$coerce_to?","$initialize","$===","$format","$raise","$respond_to?","$to_s","$to_str","$<=>","$==","$=~","$new","$force_encoding","$casecmp","$empty?","$ljust","$ceil","$/","$+","$rjust","$floor","$coerce_to!","$copy_singleton_methods","$initialize_clone","$initialize_dup","$enum_for","$chomp","$[]","$to_i","$each_line","$to_proc","$to_a","$class","$match","$match?","$captures","$proc","$succ","$escape","$include?","$upcase","$unicode_normalize","$pristine"]),self.$require("corelib/comparable"),self.$require("corelib/regexp"),function($base,$super,$String_frozen$ques$77){var $String_each_line$27,$String_gsub$30,$String_lines$37,$String_match$41,$String_scan$52,$String_sub$57,$String_to_proc$62,$String_upto$68,self=$klass($base,$super,"String"),$nesting=[self].concat($String_frozen$ques$77);function char_class_from_char_sets(sets){function intersection(setA,setB){if(0===setA.length)return setB;for(var chr,result="",len=setA.length,i=0;i<len;i++)chr=setA.charAt(i),-1!==setB.indexOf(chr)&&(result+=chr);return result}for(var set,neg,chr,tmp,pos_intersection="",neg_intersection="",i=0,len=sets.length;i<len;i++)set=function(set){for(var curr_char,skip_next_dash,char_code_from,char_code_upto,char_code,result="",len=set.length,i=0;i<len;i++)if("-"===(curr_char=set.charAt(i))&&0<i&&i<len-1&&!skip_next_dash){for(char_code_from=set.charCodeAt(i-1),(char_code_upto=set.charCodeAt(i+1))<char_code_from&&self.$raise($$($nesting,"ArgumentError"),'invalid range "'+char_code_from+"-"+char_code_upto+'" in string transliteration'),char_code=char_code_from+1;char_code<char_code_upto+1;char_code++)result+=String.fromCharCode(char_code);skip_next_dash=!0,i++}else skip_next_dash="\\"===curr_char,result+=curr_char;return result}((neg="^"===(set=$coerce_to(sets[i],$$($nesting,"String"),"to_str")).charAt(0)&&1<set.length)?set.slice(1):set),neg?neg_intersection=intersection(neg_intersection,set):pos_intersection=intersection(pos_intersection,set);if(0<pos_intersection.length&&0<neg_intersection.length){for(tmp="",i=0,len=pos_intersection.length;i<len;i++)chr=pos_intersection.charAt(i),-1===neg_intersection.indexOf(chr)&&(tmp+=chr);pos_intersection=tmp,neg_intersection=""}return 0<pos_intersection.length?"["+$$($nesting,"Regexp").$escape(pos_intersection)+"]":0<neg_intersection.length?"[^"+$$($nesting,"Regexp").$escape(neg_intersection)+"]":null}self.$include($$($nesting,"Comparable")),Opal.defineProperty(self.$$prototype,"$$is_string",!0),Opal.defineProperty(self.$$prototype,"$$cast",function(string){var klass=this.$$class;return klass.$$constructor===String?string:new klass.$$constructor(string)}),Opal.def(self,"$__id__",$String_frozen$ques$77=function(){return this.toString()},$String_frozen$ques$77.$$arity=0),$alias(self,"object_id","__id__"),Opal.defs(self,"$try_convert",$String_frozen$ques$77=function(what){return $$($nesting,"Opal")["$coerce_to?"](what,$$($nesting,"String"),"to_str")},$String_frozen$ques$77.$$arity=1),Opal.defs(self,"$new",$String_frozen$ques$77=function($a){var args=Opal.slice.call(arguments,0,arguments.length),str=args[0]||"",opts=args[args.length-1],str=$coerce_to(str,$$($nesting,"String"),"to_str");return opts&&opts.$$is_hash&&opts.$$smap.encoding&&(str=str.$force_encoding(opts.$$smap.encoding)),(str=new this.$$constructor(str)).$initialize.$$pristine||$send(str,"initialize",Opal.to_a(args)),str},$String_frozen$ques$77.$$arity=-1),Opal.def(self,"$initialize",$String_frozen$ques$77=function($a,$b){var $post_args=Opal.slice.call(arguments,0,arguments.length),$kwargs=Opal.extract_kwargs($post_args);if(null==$kwargs)$kwargs=$hash2([],{});else if(!$kwargs.$$is_hash)throw Opal.ArgumentError.$new("expected kwargs");return 0<$post_args.length&&($post_args[0],$post_args.splice(0,1)),null==$kwargs.$$smap.encoding&&0,null==$kwargs.$$smap.capacity&&0,nil},$String_frozen$ques$77.$$arity=-1),Opal.def(self,"$%",$String_frozen$ques$77=function(data){var self=this;return $truthy($$($nesting,"Array")["$==="](data))?$send(self,"format",[self].concat(Opal.to_a(data))):self.$format(self,data)},$String_frozen$ques$77.$$arity=1),Opal.def(self,"$*",$String_frozen$ques$77=function(count){if((count=$coerce_to(count,$$($nesting,"Integer"),"to_int"))<0&&this.$raise($$($nesting,"ArgumentError"),"negative argument"),0===count)return this.$$cast("");var result="",string=this.toString();for(string.length*count>=1<<28&&this.$raise($$($nesting,"RangeError"),"multiply count must not overflow maximum string size");1==(1&count)&&(result+=string),0!==(count>>>=1);)string+=string;return this.$$cast(result)},$String_frozen$ques$77.$$arity=1),Opal.def(self,"$+",$String_frozen$ques$77=function(other){if(""==(other=$coerce_to(other,$$($nesting,"String"),"to_str"))&&this.$$class===Opal.String)return this;if(""==this&&other.$$class===Opal.String)return other;var out=this+other;return this.encoding===out.encoding&&other.encoding===out.encoding||"UTF-8"===this.encoding.name||"UTF-8"===other.encoding.name?out:Opal.enc(out,this.encoding)},$String_frozen$ques$77.$$arity=1),Opal.def(self,"$<=>",$String_frozen$ques$77=function(cmp){if($truthy(cmp["$respond_to?"]("to_str")))return(cmp=cmp.$to_str().$to_s())<this?1:this<cmp?-1:0;cmp=cmp["$<=>"](this);return cmp===nil?nil:0<cmp?-1:cmp<0?1:0},$String_frozen$ques$77.$$arity=1),Opal.def(self,"$==",$String_frozen$ques$77=function(other){return other.$$is_string?this.toString()===other.toString():!!$respond_to(other,"$to_str")&&other["$=="](this)},$String_frozen$ques$77.$$arity=1),$alias(self,"eql?","=="),$alias(self,"===","=="),Opal.def(self,"$=~",$String_frozen$ques$77=function(other){return other.$$is_string&&this.$raise($$($nesting,"TypeError"),"type mismatch: String given"),other["$=~"](this)},$String_frozen$ques$77.$$arity=1),Opal.def(self,"$[]",$String_frozen$ques$77=function(index,length){var size=this.length;if(index.$$is_range)return match=index.excl,length=$coerce_to(index.end,$$($nesting,"Integer"),"to_int"),index=$coerce_to(index.begin,$$($nesting,"Integer"),"to_int"),Math.abs(index)>size?nil:(index<0&&(index+=size),length<0&&(length+=size),match||(length+=1),(length-=index)<0&&(length=0),this.$$cast(this.substr(index,length)));if(index.$$is_string)return null!=length&&this.$raise($$($nesting,"TypeError")),-1!==this.indexOf(index)?this.$$cast(index):nil;if(index.$$is_regexp){var match=this.match(index);return null===match?$gvars["~"]=nil:($gvars["~"]=$$($nesting,"MatchData").$new(index,match),null==length?this.$$cast(match[0]):(length=$coerce_to(length,$$($nesting,"Integer"),"to_int"))<0&&-length<match.length?this.$$cast(match[length+=match.length]):0<=length&&length<match.length?this.$$cast(match[length]):nil)}return(index=$coerce_to(index,$$($nesting,"Integer"),"to_int"))<0&&(index+=size),null==length?size<=index||index<0?nil:this.$$cast(this.substr(index,1)):(length=$coerce_to(length,$$($nesting,"Integer"),"to_int"))<0||size<index||index<0?nil:this.$$cast(this.substr(index,length))},$String_frozen$ques$77.$$arity=-2),$alias(self,"byteslice","[]"),Opal.def(self,"$b",$String_frozen$ques$77=function(){return new String(this).$force_encoding("binary")},$String_frozen$ques$77.$$arity=0),Opal.def(self,"$capitalize",$String_frozen$ques$77=function(){return this.$$cast(this.charAt(0).toUpperCase()+this.substr(1).toLowerCase())},$String_frozen$ques$77.$$arity=0),Opal.def(self,"$casecmp",$String_frozen$ques$77=function(other){var self=this;if(!$truthy(other["$respond_to?"]("to_str")))return nil;other=$coerce_to(other,$$($nesting,"String"),"to_str").$to_s();var ascii_only=/^[\x00-\x7F]*$/;return ascii_only.test(self)&&ascii_only.test(other)&&(self=self.toLowerCase(),other=other.toLowerCase()),self["$<=>"](other)},$String_frozen$ques$77.$$arity=1),Opal.def(self,"$casecmp?",$String_frozen$ques$77=function(cmp){cmp=this.$casecmp(cmp);return cmp===nil?nil:0===cmp},$String_frozen$ques$77.$$arity=1),Opal.def(self,"$center",$String_frozen$ques$77=function(width,rjustified){if(null==rjustified&&(rjustified=" "),width=$coerce_to(width,$$($nesting,"Integer"),"to_int"),rjustified=$coerce_to(rjustified,$$($nesting,"String"),"to_str").$to_s(),$truthy(rjustified["$empty?"]())&&this.$raise($$($nesting,"ArgumentError"),"zero width padding"),$truthy(width<=this.length))return this;var ljustified=this.$ljust($rb_divide($rb_plus(width,this.length),2).$ceil(),rjustified),rjustified=this.$rjust($rb_divide($rb_plus(width,this.length),2).$floor(),rjustified);return this.$$cast(rjustified+ljustified.slice(this.length))},$String_frozen$ques$77.$$arity=-2),Opal.def(self,"$chomp",$String_frozen$ques$77=function(separator){var result;return null==$gvars["/"]&&($gvars["/"]=nil),null==separator&&(separator=$gvars["/"]),$truthy(separator===nil||0===this.length)?this:("\n"===(separator=$$($nesting,"Opal")["$coerce_to!"](separator,$$($nesting,"String"),"to_str").$to_s())?result=this.replace(/\r?\n?$/,""):""===separator?result=this.replace(/(\r?\n)+$/,""):this.length>=separator.length&&this.substr(this.length-separator.length,separator.length)===separator&&(result=this.substr(0,this.length-separator.length)),null!=result?this.$$cast(result):this)},$String_frozen$ques$77.$$arity=-1),Opal.def(self,"$chop",$String_frozen$ques$77=function(){var result=this.length,result=result<=1?"":"\n"===this.charAt(result-1)&&"\r"===this.charAt(result-2)?this.substr(0,result-2):this.substr(0,result-1);return this.$$cast(result)},$String_frozen$ques$77.$$arity=0),Opal.def(self,"$chr",$String_frozen$ques$77=function(){return this.charAt(0)},$String_frozen$ques$77.$$arity=0),Opal.def(self,"$clone",$String_frozen$ques$77=function(){var copy=nil;return(copy=new String(this)).$copy_singleton_methods(this),copy.$initialize_clone(this),copy},$String_frozen$ques$77.$$arity=0),Opal.def(self,"$dup",$String_frozen$ques$77=function(){var copy=nil;return(copy=new String(this)).$initialize_dup(this),copy},$String_frozen$ques$77.$$arity=0),Opal.def(self,"$count",$String_frozen$ques$77=function($a){var char_class=Opal.slice.call(arguments,0,arguments.length);0===char_class.length&&this.$raise($$($nesting,"ArgumentError"),"ArgumentError: wrong number of arguments (0 for 1+)");char_class=char_class_from_char_sets(char_class);return null===char_class?0:this.length-this.replace(new RegExp(char_class,"g"),"").length},$String_frozen$ques$77.$$arity=-1),Opal.def(self,"$delete",$String_frozen$ques$77=function($a){var char_class=Opal.slice.call(arguments,0,arguments.length);0===char_class.length&&this.$raise($$($nesting,"ArgumentError"),"ArgumentError: wrong number of arguments (0 for 1+)");char_class=char_class_from_char_sets(char_class);return null===char_class?this:this.$$cast(this.replace(new RegExp(char_class,"g"),""))},$String_frozen$ques$77.$$arity=-1),Opal.def(self,"$delete_prefix",$String_frozen$ques$77=function(prefix){return prefix.$$is_string||(prefix=$coerce_to(prefix,$$($nesting,"String"),"to_str")),this.slice(0,prefix.length)===prefix?this.$$cast(this.slice(prefix.length)):this},$String_frozen$ques$77.$$arity=1),Opal.def(self,"$delete_suffix",$String_frozen$ques$77=function(suffix){return suffix.$$is_string||(suffix=$coerce_to(suffix,$$($nesting,"String"),"to_str")),this.slice(this.length-suffix.length)===suffix?this.$$cast(this.slice(0,this.length-suffix.length)):this},$String_frozen$ques$77.$$arity=1),Opal.def(self,"$downcase",$String_frozen$ques$77=function(){return this.$$cast(this.toLowerCase())},$String_frozen$ques$77.$$arity=0),Opal.def(self,"$each_line",$String_each_line$27=function(separator){var a,i,n,length,trailing,splitted,value,chomped=$String_each_line$27.$$p,block=chomped||nil;if(null==$gvars["/"]&&($gvars["/"]=nil),chomped&&($String_each_line$27.$$p=null),chomped&&($String_each_line$27.$$p=null),null==separator&&(separator=$gvars["/"]),block===nil)return this.$enum_for("each_line",separator);if(separator===nil)return Opal.yield1(block,this),this;if(0===(separator=$coerce_to(separator,$$($nesting,"String"),"to_str")).length){for(i=0,n=(a=this.split(/(\n{2,})/)).length;i<n;i+=2)(a[i]||a[i+1])&&(value=(a[i]||"")+(a[i+1]||""),Opal.yield1(block,this.$$cast(value)));return this}for(chomped=this.$chomp(separator),trailing=this.length!=chomped.length,i=0,length=(splitted=chomped.split(separator)).length;i<length;i++)i<length-1||trailing?Opal.yield1(block,this.$$cast(splitted[i]+separator)):Opal.yield1(block,this.$$cast(splitted[i]));return this},$String_each_line$27.$$arity=-1),Opal.def(self,"$empty?",$String_frozen$ques$77=function(){return 0===this.length},$String_frozen$ques$77.$$arity=0),Opal.def(self,"$end_with?",$String_frozen$ques$77=function($a){for(var suffixes=Opal.slice.call(arguments,0,arguments.length),i=0,length=suffixes.length;i<length;i++){var suffix=$coerce_to(suffixes[i],$$($nesting,"String"),"to_str").$to_s();if(this.length>=suffix.length&&this.substr(this.length-suffix.length,suffix.length)==suffix)return!0}return!1},$String_frozen$ques$77.$$arity=-1),$alias(self,"equal?","==="),Opal.def(self,"$gsub",$String_gsub$30=function(pattern,replacement){var $iter=$String_gsub$30.$$p,block=$iter||nil,self=this;if($iter&&($String_gsub$30.$$p=null),$iter&&($String_gsub$30.$$p=null),void 0===replacement&&block===nil)return self.$enum_for("gsub",pattern);var match,_replacement,lastIndex,result="",match_data=nil,index=0;for(pattern=pattern.$$is_regexp?Opal.global_multiline_regexp(pattern):(pattern=$coerce_to(pattern,$$($nesting,"String"),"to_str"),new RegExp(pattern.replace(/[.*+?^${}()|[\]\\]/g,"\\$&"),"gm"));;){if(null===(match=pattern.exec(self))){$gvars["~"]=nil,result+=self.slice(index);break}match_data=$$($nesting,"MatchData").$new(pattern,match),void 0===replacement?(lastIndex=pattern.lastIndex,_replacement=block(match[0]),pattern.lastIndex=lastIndex):_replacement=replacement.$$is_hash?replacement["$[]"](match[0]).$to_s():(replacement.$$is_string||(replacement=$coerce_to(replacement,$$($nesting,"String"),"to_str")),replacement.replace(/([\\]+)([0-9+&`'])/g,function(original,slashes,command){if(slashes.length%2==0)return original;switch(command){case"+":for(var i=match.length-1;0<i;i--)if(void 0!==match[i])return slashes.slice(1)+match[i];return"";case"&":return slashes.slice(1)+match[0];case"`":return slashes.slice(1)+self.slice(0,match.index);case"'":return slashes.slice(1)+self.slice(match.index+match[0].length);default:return slashes.slice(1)+(match[command]||"")}}).replace(/\\\\/g,"\\")),pattern.lastIndex===match.index?(result+=self.slice(index,match.index)+_replacement+(self[match.index]||""),pattern.lastIndex+=1):result+=self.slice(index,match.index)+_replacement,index=pattern.lastIndex}return $gvars["~"]=match_data,self.$$cast(result)},$String_gsub$30.$$arity=-2),Opal.def(self,"$hash",$String_frozen$ques$77=function(){return this.toString()},$String_frozen$ques$77.$$arity=0),Opal.def(self,"$hex",$String_frozen$ques$77=function(){return this.$to_i(16)},$String_frozen$ques$77.$$arity=0),Opal.def(self,"$include?",$String_frozen$ques$77=function(other){return other.$$is_string||(other=$coerce_to(other,$$($nesting,"String"),"to_str")),-1!==this.indexOf(other)},$String_frozen$ques$77.$$arity=1),Opal.def(self,"$index",$String_frozen$ques$77=function(search,offset){var index,match,regex;if(void 0===offset)offset=0;else if(offset=$coerce_to(offset,$$($nesting,"Integer"),"to_int"),offset<0&&(offset+=this.length)<0)return nil;if(search.$$is_regexp)for(regex=Opal.global_multiline_regexp(search);;){if(null===(match=regex.exec(this))){$gvars["~"]=nil,index=-1;break}if(match.index>=offset){$gvars["~"]=$$($nesting,"MatchData").$new(regex,match),index=match.index;break}regex.lastIndex=match.index+1}else index=0===(search=$coerce_to(search,$$($nesting,"String"),"to_str")).length&&offset>this.length?-1:this.indexOf(search,offset);return-1===index?nil:index},$String_frozen$ques$77.$$arity=-2),Opal.def(self,"$inspect",$String_frozen$ques$77=function(){var self=this,meta={"":"\\a","":"\\e","\b":"\\b","\t":"\\t","\n":"\\n","\f":"\\f","\r":"\\r","\v":"\\v",'"':'\\"',"\\":"\\\\"};return'"'+self.replace(/[\\\"\x00-\x1f\u007F-\u009F\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,function(chr){return meta[chr]||((chr=chr.charCodeAt(0))<=255&&(self.encoding["$binary?"]()||self.internal_encoding["$binary?"]())?"\\x"+("00"+chr.toString(16).toUpperCase()).slice(-2):"\\u"+("0000"+chr.toString(16).toUpperCase()).slice(-4))}).replace(/\#[\$\@\{]/g,"\\$&")+'"'},$String_frozen$ques$77.$$arity=0),Opal.def(self,"$intern",$String_frozen$ques$77=function(){return this.toString()},$String_frozen$ques$77.$$arity=0),Opal.def(self,"$lines",$String_lines$37=function(separator){var $iter=$String_lines$37.$$p,block=$iter||nil,e=nil;return null==$gvars["/"]&&($gvars["/"]=nil),$iter&&($String_lines$37.$$p=null),$iter&&($String_lines$37.$$p=null),null==separator&&(separator=$gvars["/"]),e=$send(this,"each_line",[separator],block.$to_proc()),$truthy(block)?this:e.$to_a()},$String_lines$37.$$arity=-1),Opal.def(self,"$ljust",$String_frozen$ques$77=function(width,padstr){if(null==padstr&&(padstr=" "),width=$coerce_to(width,$$($nesting,"Integer"),"to_int"),padstr=$coerce_to(padstr,$$($nesting,"String"),"to_str").$to_s(),$truthy(padstr["$empty?"]())&&this.$raise($$($nesting,"ArgumentError"),"zero width padding"),$truthy(width<=this.length))return this;var index=-1,result="";for(width-=this.length;++index<width;)result+=padstr;return this.$$cast(this+result.slice(0,width))},$String_frozen$ques$77.$$arity=-2),Opal.def(self,"$lstrip",$String_frozen$ques$77=function(){return this.replace(/^\s*/,"")},$String_frozen$ques$77.$$arity=0),Opal.def(self,"$ascii_only?",$String_frozen$ques$77=function(){return!!this.encoding.ascii&&/^[\x00-\x7F]*$/.test(this)},$String_frozen$ques$77.$$arity=0),Opal.def(self,"$match",$String_match$41=function(pattern,pos){var $iter=$String_match$41.$$p,block=$iter||nil,$ret_or_1=nil;return $iter&&($String_match$41.$$p=null),$iter&&($String_match$41.$$p=null),$truthy($truthy($ret_or_1=$$($nesting,"String")["$==="](pattern))?$ret_or_1:pattern["$respond_to?"]("to_str"))&&(pattern=$$($nesting,"Regexp").$new(pattern.$to_str())),$truthy($$($nesting,"Regexp")["$==="](pattern))||this.$raise($$($nesting,"TypeError"),"wrong argument type "+pattern.$class()+" (expected Regexp)"),$send(pattern,"match",[this,pos],block.$to_proc())},$String_match$41.$$arity=-2),Opal.def(self,"$match?",$String_frozen$ques$77=function(pattern,pos){var $ret_or_2=nil;return $truthy($truthy($ret_or_2=$$($nesting,"String")["$==="](pattern))?$ret_or_2:pattern["$respond_to?"]("to_str"))&&(pattern=$$($nesting,"Regexp").$new(pattern.$to_str())),$truthy($$($nesting,"Regexp")["$==="](pattern))||this.$raise($$($nesting,"TypeError"),"wrong argument type "+pattern.$class()+" (expected Regexp)"),pattern["$match?"](this,pos)},$String_frozen$ques$77.$$arity=-2),Opal.def(self,"$next",$String_frozen$ques$77=function(){var i=this.length;if(0===i)return this.$$cast("");for(var code,result=this,first_alphanum_char_index=this.search(/[a-zA-Z0-9]/),carry=!1;i--;){if(48<=(code=this.charCodeAt(i))&&code<=57||65<=code&&code<=90||97<=code&&code<=122)switch(code){case 57:carry=!0,code=48;break;case 90:carry=!0,code=65;break;case 122:carry=!0,code=97;break;default:carry=!1,code+=1}else-1===first_alphanum_char_index?255===code?(carry=!0,code=0):(carry=!1,code+=1):carry=!0;if(result=result.slice(0,i)+String.fromCharCode(code)+result.slice(i+1),carry&&(0===i||i===first_alphanum_char_index)){switch(code){case 65:case 97:break;default:code+=1}result=0===i?String.fromCharCode(code)+result:result.slice(0,i)+String.fromCharCode(code)+result.slice(i),carry=!1}if(!carry)break}return this.$$cast(result)},$String_frozen$ques$77.$$arity=0),Opal.def(self,"$oct",$String_frozen$ques$77=function(){var result=this,radix=8;return/^\s*_/.test(result)?0:(result=result.replace(/^(\s*[+-]?)(0[bodx]?)(.+)$/i,function(original,head,flag,tail){switch(tail.charAt(0)){case"+":case"-":return original;case"0":if("x"===tail.charAt(1)&&"0x"===flag)return original}switch(flag){case"0b":radix=2;break;case"0":case"0o":radix=8;break;case"0d":radix=10;break;case"0x":radix=16}return head+tail}),result=parseInt(result.replace(/_(?!_)/g,""),radix),isNaN(result)?0:result)},$String_frozen$ques$77.$$arity=0),Opal.def(self,"$ord",$String_frozen$ques$77=function(){return"function"==typeof this.codePointAt?this.codePointAt(0):this.charCodeAt(0)},$String_frozen$ques$77.$$arity=0),Opal.def(self,"$partition",$String_frozen$ques$77=function(sep){var i=sep.$$is_regexp?null===(i=sep.exec(this))?-1:($$($nesting,"MatchData").$new(sep,i),sep=i[0],i.index):(sep=$coerce_to(sep,$$($nesting,"String"),"to_str"),this.indexOf(sep));return-1===i?[this,"",""]:[this.slice(0,i),this.slice(i,i+sep.length),this.slice(i+sep.length)]},$String_frozen$ques$77.$$arity=1),Opal.def(self,"$reverse",$String_frozen$ques$77=function(){return this.split("").reverse().join("")},$String_frozen$ques$77.$$arity=0),Opal.def(self,"$rindex",$String_frozen$ques$77=function(search,offset){var i,m,r,_m;if(void 0===offset)offset=this.length;else if(offset=$coerce_to(offset,$$($nesting,"Integer"),"to_int"),offset<0&&(offset+=this.length)<0)return nil;if(search.$$is_regexp){for(m=null,r=Opal.global_multiline_regexp(search);!(null===(_m=r.exec(this))||_m.index>offset);)m=_m,r.lastIndex=m.index+1;i=null===m?($gvars["~"]=nil,-1):($$($nesting,"MatchData").$new(r,m),m.index)}else search=$coerce_to(search,$$($nesting,"String"),"to_str"),i=this.lastIndexOf(search,offset);return-1===i?nil:i},$String_frozen$ques$77.$$arity=-2),Opal.def(self,"$rjust",$String_frozen$ques$77=function(result,padstr){if(null==padstr&&(padstr=" "),result=$coerce_to(result,$$($nesting,"Integer"),"to_int"),padstr=$coerce_to(padstr,$$($nesting,"String"),"to_str").$to_s(),$truthy(padstr["$empty?"]())&&this.$raise($$($nesting,"ArgumentError"),"zero width padding"),$truthy(result<=this.length))return this;var remaining=Math.floor(result-this.length),result=Math.floor(remaining/padstr.length),result=Array(result+1).join(padstr),remaining=remaining-result.length;return this.$$cast(result+padstr.slice(0,remaining)+this)},$String_frozen$ques$77.$$arity=-2),Opal.def(self,"$rpartition",$String_frozen$ques$77=function(sep){var i,m,r,_m;if(sep.$$is_regexp){for(m=null,r=Opal.global_multiline_regexp(sep);null!==(_m=r.exec(this));)m=_m,r.lastIndex=m.index+1;i=null===m?-1:($$($nesting,"MatchData").$new(r,m),sep=m[0],m.index)}else sep=$coerce_to(sep,$$($nesting,"String"),"to_str"),i=this.lastIndexOf(sep);return-1===i?["","",this]:[this.slice(0,i),this.slice(i,i+sep.length),this.slice(i+sep.length)]},$String_frozen$ques$77.$$arity=1),Opal.def(self,"$rstrip",$String_frozen$ques$77=function(){return this.replace(/[\s\u0000]*$/,"")},$String_frozen$ques$77.$$arity=0),Opal.def(self,"$scan",$String_scan$52=function(pattern){var $iter=$String_scan$52.$$p,block=$iter||nil;$iter&&($String_scan$52.$$p=null),$iter&&($String_scan$52.$$p=null);var match,result=[],match_data=nil;for(pattern=pattern.$$is_regexp?Opal.global_multiline_regexp(pattern):(pattern=$coerce_to(pattern,$$($nesting,"String"),"to_str"),new RegExp(pattern.replace(/[.*+?^${}()|[\]\\]/g,"\\$&"),"gm"));null!=(match=pattern.exec(this));)match_data=$$($nesting,"MatchData").$new(pattern,match),block===nil?1==match.length?result.push(match[0]):result.push(match_data.$captures()):1==match.length?block(match[0]):block.call(this,match_data.$captures()),pattern.lastIndex===match.index&&(pattern.lastIndex+=1);return $gvars["~"]=match_data,block!==nil?this:result},$String_scan$52.$$arity=1),$alias(self,"slice","[]"),Opal.def(self,"$split",$String_frozen$ques$77=function(pattern,limit){var self=this,$ret_or_3=nil;if(null==$gvars[";"]&&($gvars[";"]=nil),0===self.length)return[];if(void 0===limit)limit=0;else if(1===(limit=$$($nesting,"Opal")["$coerce_to!"](limit,$$($nesting,"Integer"),"to_int")))return[self];void 0!==pattern&&pattern!==nil||(pattern=$truthy($ret_or_3=$gvars[";"])?$ret_or_3:" ");var match,i,ii,result=[],string=self.toString(),index=0;if(pattern.$$is_regexp?pattern=Opal.global_multiline_regexp(pattern):" "===(pattern=$coerce_to(pattern,$$($nesting,"String"),"to_str").$to_s())?(pattern=/\s+/gm,string=string.replace(/^\s+/,"")):pattern=new RegExp(pattern.replace(/[.*+?^${}()|[\]\\]/g,"\\$&"),"gm"),1===(result=string.split(pattern)).length&&result[0]===string)return[self.$$cast(result[0])];for(;-1!==(i=result.indexOf(void 0));)result.splice(i,1);function castResult(){for(i=0;i<result.length;i++)result[i]=self.$$cast(result[i])}if(0===limit){for(;""===result[result.length-1];)--result.length;return castResult(),result}if(match=pattern.exec(string),limit<0){if(null!==match&&""===match[0]&&-1===pattern.source.indexOf("(?="))for(i=0,ii=match.length;i<ii;i++)result.push("");return castResult(),result}if(null!==match&&""===match[0])return result.splice(limit-1,result.length-1,result.slice(limit-1).join("")),castResult(),result;if(limit>=result.length)return castResult(),result;for(i=0;null!==match&&(i++,index=pattern.lastIndex,i+1!==limit);)match=pattern.exec(string);return result.splice(limit-1,result.length-1,string.slice(index)),castResult(),result},$String_frozen$ques$77.$$arity=-1),Opal.def(self,"$squeeze",$String_frozen$ques$77=function($a){var char_class=Opal.slice.call(arguments,0,arguments.length);if(0===char_class.length)return this.$$cast(this.replace(/(.)\1+/g,"$1"));char_class=char_class_from_char_sets(char_class);return null===char_class?this:this.$$cast(this.replace(new RegExp("("+char_class+")\\1+","g"),"$1"))},$String_frozen$ques$77.$$arity=-1),Opal.def(self,"$start_with?",$String_frozen$ques$77=function($a){for(var prefixes=Opal.slice.call(arguments,0,arguments.length),i=0,length=prefixes.length;i<length;i++)if(prefixes[i].$$is_regexp){var regexp=prefixes[i],prefix=regexp.exec(this);if(null!=prefix&&0===prefix.index)return $gvars["~"]=$$($nesting,"MatchData").$new(regexp,prefix),!0;$gvars["~"]=nil}else{prefix=$coerce_to(prefixes[i],$$($nesting,"String"),"to_str").$to_s();if(0===this.indexOf(prefix))return!0}return!1},$String_frozen$ques$77.$$arity=-1),Opal.def(self,"$strip",$String_frozen$ques$77=function(){return this.replace(/^\s*/,"").replace(/[\s\u0000]*$/,"")},$String_frozen$ques$77.$$arity=0),Opal.def(self,"$sub",$String_sub$57=function(pattern,result){var $iter=$String_sub$57.$$p,block=$iter||nil,self=this;$iter&&($String_sub$57.$$p=null),$iter&&($String_sub$57.$$p=null),pattern.$$is_regexp||(pattern=$coerce_to(pattern,$$($nesting,"String"),"to_str"),pattern=new RegExp(pattern.replace(/[.*+?^${}()|[\]\\]/g,"\\$&")));var match=pattern.exec(self),result=null===match?($gvars["~"]=nil,self.toString()):($$($nesting,"MatchData").$new(pattern,match),void 0===result?(block===nil&&self.$raise($$($nesting,"ArgumentError"),"wrong number of arguments (1 for 2)"),self.slice(0,match.index)+block(match[0])+self.slice(match.index+match[0].length)):result.$$is_hash?self.slice(0,match.index)+result["$[]"](match[0]).$to_s()+self.slice(match.index+match[0].length):(result=(result=$coerce_to(result,$$($nesting,"String"),"to_str")).replace(/([\\]+)([0-9+&`'])/g,function(original,slashes,command){if(slashes.length%2==0)return original;switch(command){case"+":for(var i=match.length-1;0<i;i--)if(void 0!==match[i])return slashes.slice(1)+match[i];return"";case"&":return slashes.slice(1)+match[0];case"`":return slashes.slice(1)+self.slice(0,match.index);case"'":return slashes.slice(1)+self.slice(match.index+match[0].length);default:return slashes.slice(1)+(match[command]||"")}}).replace(/\\\\/g,"\\"),self.slice(0,match.index)+result+self.slice(match.index+match[0].length)));return self.$$cast(result)},$String_sub$57.$$arity=-2),$alias(self,"succ","next"),Opal.def(self,"$sum",$String_frozen$ques$77=function(n){null==n&&(n=16),n=$coerce_to(n,$$($nesting,"Integer"),"to_int");for(var result=0,length=this.length,i=0;i<length;i++)result+=this.charCodeAt(i);return n<=0?result:result&Math.pow(2,n)-1},$String_frozen$ques$77.$$arity=-1),Opal.def(self,"$swapcase",$String_frozen$ques$77=function(){var str=this.replace(/([a-z]+)|([A-Z]+)/g,function($0,$1,$2){return $1?$0.toUpperCase():$0.toLowerCase()});return this.constructor===String?str:this.$class().$new(str)},$String_frozen$ques$77.$$arity=0),Opal.def(self,"$to_f",$String_frozen$ques$77=function(){if("_"===this.charAt(0))return 0;var result=parseFloat(this.replace(/_/g,""));return isNaN(result)||result==1/0||result==-1/0?0:result},$String_frozen$ques$77.$$arity=0),Opal.def(self,"$to_i",$String_frozen$ques$77=function(base){null==base&&(base=10);var result=this.toLowerCase(),radix=$coerce_to(base,$$($nesting,"Integer"),"to_int");return(1===radix||radix<0||36<radix)&&this.$raise($$($nesting,"ArgumentError"),"invalid radix "+radix),/^\s*_/.test(result)?0:(result=result.replace(/^(\s*[+-]?)(0[bodx]?)(.+)$/,function(original,head,flag,tail){switch(tail.charAt(0)){case"+":case"-":return original;case"0":if("x"===tail.charAt(1)&&"0x"===flag&&(0===radix||16===radix))return original}switch(flag){case"0b":if(0===radix||2===radix)return radix=2,head+tail;break;case"0":case"0o":if(0===radix||8===radix)return radix=8,head+tail;break;case"0d":if(0===radix||10===radix)return radix=10,head+tail;break;case"0x":if(0===radix||16===radix)return radix=16,head+tail}return original}),result=parseInt(result.replace(/_(?!_)/g,""),radix),isNaN(result)?0:result)},$String_frozen$ques$77.$$arity=-1),Opal.def(self,"$to_proc",$String_to_proc$62=function(){var $$63,method_name,$iter=$String_to_proc$62.$$p;return $iter&&($String_to_proc$62.$$p=null),method_name=$rb_plus("$",this.valueOf()),$send(this,"proc",[],(($$63=function($a){var args,body=null==$$63.$$s?this:$$63.$$s,recv=$$63.$$p,block=recv||nil;recv&&($$63.$$p=null),0===(args=Opal.slice.call(arguments,0,arguments.length)).length&&body.$raise($$($nesting,"ArgumentError"),"no receiver given");recv=args[0];null==recv&&(recv=nil);body=recv[method_name];return body?("function"==typeof block&&(body.$$p=block),1===args.length?body.call(recv):body.apply(recv,args.slice(1))):recv.$method_missing.apply(recv,args)}).$$s=this,$$63.$$arity=-1,$$63))},$String_to_proc$62.$$arity=0),Opal.def(self,"$to_s",$String_frozen$ques$77=function(){return this.toString()},$String_frozen$ques$77.$$arity=0),$alias(self,"to_str","to_s"),$alias(self,"to_sym","intern"),Opal.def(self,"$tr",$String_frozen$ques$77=function(from,to){var c,ch,start,end,length;if(from=$coerce_to(from,$$($nesting,"String"),"to_str").$to_s(),to=$coerce_to(to,$$($nesting,"String"),"to_str").$to_s(),0==from.length||from===to)return this;var subs={},from_chars=from.split(""),from_length=from_chars.length,to_chars=to.split(""),to_length=to_chars.length,inverse=!1,global_sub=null;"^"===from_chars[0]&&1<from_chars.length&&(inverse=!0,from_chars.shift(),global_sub=to_chars[to_length-1],--from_length);var from_chars_expanded=[],last_from=null;for(in_range=!1,i=0;i<from_length;i++)if(ch=from_chars[i],null==last_from)last_from=ch,from_chars_expanded.push(ch);else if("-"===ch)"-"===last_from?(from_chars_expanded.push("-"),from_chars_expanded.push("-")):i==from_length-1?from_chars_expanded.push("-"):in_range=!0;else if(in_range){for(start=last_from.charCodeAt(0),(end=ch.charCodeAt(0))<start&&this.$raise($$($nesting,"ArgumentError"),'invalid range "'+String.fromCharCode(start)+"-"+String.fromCharCode(end)+'" in string transliteration'),c=start+1;c<end;c++)from_chars_expanded.push(String.fromCharCode(c));from_chars_expanded.push(ch),last_from=in_range=null}else from_chars_expanded.push(ch);if(from_length=(from_chars=from_chars_expanded).length,inverse)for(i=0;i<from_length;i++)subs[from_chars[i]]=!0;else{if(0<to_length){for(var to_chars_expanded=[],last_to=null,in_range=!1,i=0;i<to_length;i++)if(ch=to_chars[i],null==last_to)last_to=ch,to_chars_expanded.push(ch);else if("-"===ch)"-"===last_to?(to_chars_expanded.push("-"),to_chars_expanded.push("-")):i==to_length-1?to_chars_expanded.push("-"):in_range=!0;else if(in_range){for(start=last_to.charCodeAt(0),(end=ch.charCodeAt(0))<start&&this.$raise($$($nesting,"ArgumentError"),'invalid range "'+String.fromCharCode(start)+"-"+String.fromCharCode(end)+'" in string transliteration'),c=start+1;c<end;c++)to_chars_expanded.push(String.fromCharCode(c));to_chars_expanded.push(ch),last_to=in_range=null}else to_chars_expanded.push(ch);to_length=(to_chars=to_chars_expanded).length}var length_diff=from_length-to_length;if(0<length_diff){var pad_char=0<to_length?to_chars[to_length-1]:"";for(i=0;i<length_diff;i++)to_chars.push(pad_char)}for(i=0;i<from_length;i++)subs[from_chars[i]]=to_chars[i]}var new_str="";for(i=0,length=this.length;i<length;i++){var sub=subs[ch=this.charAt(i)];new_str+=inverse?null==sub?global_sub:ch:null!=sub?sub:ch}return this.$$cast(new_str)},$String_frozen$ques$77.$$arity=2),Opal.def(self,"$tr_s",$String_frozen$ques$77=function(from,to){var c,ch,start,end,length;if(from=$coerce_to(from,$$($nesting,"String"),"to_str").$to_s(),to=$coerce_to(to,$$($nesting,"String"),"to_str").$to_s(),0==from.length)return this;var subs={},from_chars=from.split(""),from_length=from_chars.length,to_chars=to.split(""),to_length=to_chars.length,inverse=!1,global_sub=null;"^"===from_chars[0]&&1<from_chars.length&&(inverse=!0,from_chars.shift(),global_sub=to_chars[to_length-1],--from_length);var from_chars_expanded=[],last_from=null;for(in_range=!1,i=0;i<from_length;i++)if(ch=from_chars[i],null==last_from)last_from=ch,from_chars_expanded.push(ch);else if("-"===ch)"-"===last_from?(from_chars_expanded.push("-"),from_chars_expanded.push("-")):i==from_length-1?from_chars_expanded.push("-"):in_range=!0;else if(in_range){for(start=last_from.charCodeAt(0),(end=ch.charCodeAt(0))<start&&this.$raise($$($nesting,"ArgumentError"),'invalid range "'+String.fromCharCode(start)+"-"+String.fromCharCode(end)+'" in string transliteration'),c=start+1;c<end;c++)from_chars_expanded.push(String.fromCharCode(c));from_chars_expanded.push(ch),last_from=in_range=null}else from_chars_expanded.push(ch);if(from_length=(from_chars=from_chars_expanded).length,inverse)for(i=0;i<from_length;i++)subs[from_chars[i]]=!0;else{if(0<to_length){for(var to_chars_expanded=[],in_range=!1,i=0;i<to_length;i++)if(ch=to_chars[i],null==last_from)last_from=ch,to_chars_expanded.push(ch);else if("-"===ch)i==to_length-1?to_chars_expanded.push("-"):in_range=!0;else if(in_range){for(start=last_from.charCodeAt(0),(end=ch.charCodeAt(0))<start&&this.$raise($$($nesting,"ArgumentError"),'invalid range "'+String.fromCharCode(start)+"-"+String.fromCharCode(end)+'" in string transliteration'),c=start+1;c<end;c++)to_chars_expanded.push(String.fromCharCode(c));to_chars_expanded.push(ch),last_from=in_range=null}else to_chars_expanded.push(ch);to_length=(to_chars=to_chars_expanded).length}var length_diff=from_length-to_length;if(0<length_diff){var pad_char=0<to_length?to_chars[to_length-1]:"";for(i=0;i<length_diff;i++)to_chars.push(pad_char)}for(i=0;i<from_length;i++)subs[from_chars[i]]=to_chars[i]}var new_str="",last_substitute=null;for(i=0,length=this.length;i<length;i++){var sub=subs[ch=this.charAt(i)];inverse?null==sub?null==last_substitute&&(new_str+=global_sub,last_substitute=!0):(new_str+=ch,last_substitute=null):null!=sub?null!=last_substitute&&last_substitute===sub||(new_str+=sub,last_substitute=sub):(new_str+=ch,last_substitute=null)}return this.$$cast(new_str)},$String_frozen$ques$77.$$arity=2),Opal.def(self,"$upcase",$String_frozen$ques$77=function(){return this.$$cast(this.toUpperCase())},$String_frozen$ques$77.$$arity=0),Opal.def(self,"$upto",$String_upto$68=function(stop,excl){var $iter=$String_upto$68.$$p,block=$iter||nil;if($iter&&($String_upto$68.$$p=null),$iter&&($String_upto$68.$$p=null),null==excl&&(excl=!1),block===nil)return this.$enum_for("upto",stop,excl);var a,b,s=this.toString();if(stop=$coerce_to(stop,$$($nesting,"String"),"to_str"),1===s.length&&1===stop.length)for(a=s.charCodeAt(0),b=stop.charCodeAt(0);a<=b&&(!excl||a!==b);)block(String.fromCharCode(a)),a+=1;else if(parseInt(s,10).toString()===s&&parseInt(stop,10).toString()===stop)for(a=parseInt(s,10),b=parseInt(stop,10);a<=b&&(!excl||a!==b);)block(a.toString()),a+=1;else for(;s.length<=stop.length&&s<=stop&&(!excl||s!==stop);)block(s),s=s.$succ();return this},$String_upto$68.$$arity=-2),Opal.def(self,"$instance_variables",$String_frozen$ques$77=function(){return[]},$String_frozen$ques$77.$$arity=0),Opal.defs(self,"$_load",$String_frozen$ques$77=function($a){var $post_args=Opal.slice.call(arguments,0,arguments.length);return $send(this,"new",Opal.to_a($post_args))},$String_frozen$ques$77.$$arity=-1),Opal.def(self,"$unicode_normalize",$String_frozen$ques$77=function(form){return null==form&&(form="nfc"),$truthy(["nfc","nfd","nfkc","nfkd"]["$include?"](form))||this.$raise($$($nesting,"ArgumentError"),"Invalid normalization form "+form),this.normalize(form.$upcase())},$String_frozen$ques$77.$$arity=-1),Opal.def(self,"$unicode_normalized?",$String_frozen$ques$77=function(form){return null==form&&(form="nfc"),this.$unicode_normalize(form)["$=="](this)},$String_frozen$ques$77.$$arity=-1),Opal.def(self,"$unpack",$String_frozen$ques$77=function(){return this.$raise("To use String#unpack, you must first require 'corelib/string/unpack'.")},$String_frozen$ques$77.$$arity=1),Opal.def(self,"$unpack1",$String_frozen$ques$77=function(){return this.$raise("To use String#unpack1, you must first require 'corelib/string/unpack'.")},$String_frozen$ques$77.$$arity=1),Opal.def(self,"$freeze",$String_frozen$ques$77=function(){return"string"==typeof this||(this.$$frozen=!0),this},$String_frozen$ques$77.$$arity=0),$alias(self,"+@","dup"),Opal.def(self,"$-@",$String_frozen$ques$77=function(){return"string"==typeof this||!0===this.$$frozen?this:"UTF-8"==this.encoding.name&&"UTF-8"==this.internal_encoding.name?this.toString():this.$dup().$freeze()},$String_frozen$ques$77.$$arity=0),Opal.def(self,"$frozen?",$String_frozen$ques$77=function(){return"string"==typeof this||!0===this.$$frozen},$String_frozen$ques$77.$$arity=0),$$($nesting,"Opal").$pristine(self,"initialize")}($nesting[0],String,$nesting),Opal.const_set($nesting[0],"Symbol",$$($nesting,"String"))},Opal.modules["corelib/enumerable"]=function(Opal){function $rb_gt(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?rhs<lhs:lhs["$>"](rhs)}function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}function $rb_le(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs<=rhs:lhs["$<="](rhs)}Opal.top;var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$falsy=Opal.falsy,$truthy=Opal.truthy,$coerce_to=Opal.coerce_to,$module=Opal.module,$send=Opal.send,$alias=Opal.alias,$hash2=Opal.hash2,$lambda=Opal.lambda;return Opal.add_stubs(["$each","$public_send","$destructure","$to_enum","$enumerator_size","$new","$yield","$raise","$slice_when","$!","$enum_for","$flatten","$map","$warn","$proc","$==","$nil?","$respond_to?","$coerce_to!","$>","$*","$try_convert","$<","$+","$-","$ceil","$/","$size","$select","$to_proc","$__send__","$length","$<=","$[]","$push","$<<","$[]=","$===","$inspect","$<=>","$first","$reverse","$sort","$take","$sort_by","$compare","$call","$dup","$to_a","$sort!","$map!","$key?","$values","$transform_values","$group_by","$to_h","$coerce_to?","$class","$zip"]),function(self,$Enumerable_tally$108){var $Enumerable_all$ques$1,$Enumerable_any$ques$5,$Enumerable_chunk$9,$Enumerable_chunk_while$12,$Enumerable_collect$14,$Enumerable_collect_concat$16,$Enumerable_count$19,$Enumerable_cycle$23,$Enumerable_detect$25,$Enumerable_drop_while$28,$Enumerable_each_cons$29,$Enumerable_each_entry$31,$Enumerable_each_slice$33,$Enumerable_each_with_index$35,$Enumerable_each_with_object$37,$Enumerable_filter_map$40,$Enumerable_find_all$42,$Enumerable_find_index$44,$Enumerable_grep$50,$Enumerable_grep_v$52,$Enumerable_group_by$54,$Enumerable_inject$58,$Enumerable_max$62,$Enumerable_max_by$63,$Enumerable_min$65,$Enumerable_min_by$67,$Enumerable_minmax$69,$Enumerable_minmax_by$71,$Enumerable_none$ques$73,$Enumerable_one$ques$77,$Enumerable_partition$81,$Enumerable_reject$83,$Enumerable_reverse_each$85,$Enumerable_slice_before$87,$Enumerable_slice_after$89,$Enumerable_slice_when$92,$Enumerable_sort$94,$Enumerable_sort_by$96,$Enumerable_sum$101,$Enumerable_take_while$104,$Enumerable_uniq$106,$Enumerable_to_h$109,$Enumerable_zip$110,self=$module(self,"Enumerable"),$nesting=[self].concat($Enumerable_tally$108);function comparableForPattern(value){return 0===value.length&&(value=[nil]),1<value.length&&(value=[value]),value}return Opal.def(self,"$all?",$Enumerable_all$ques$1=function(pattern){try{var $$2,$$3,$$4,$iter=$Enumerable_all$ques$1.$$p,block=$iter||nil;return $iter&&($Enumerable_all$ques$1.$$p=null),$iter&&($Enumerable_all$ques$1.$$p=null),$truthy(void 0!==pattern)?$send(this,"each",[],(($$2=function($a){null==$$2.$$s||$$2.$$s;var comparable=comparableForPattern(Opal.slice.call(arguments,0,arguments.length));if($truthy($send(pattern,"public_send",["==="].concat(Opal.to_a(comparable)))))return nil;Opal.ret(!1)}).$$s=this,$$2.$$arity=-1,$$2)):$send(this,"each",[],block!==nil?(($$3=function($a){null==$$3.$$s||$$3.$$s;var $post_args=Opal.slice.call(arguments,0,arguments.length);if($truthy(Opal.yieldX(block,Opal.to_a($post_args))))return nil;Opal.ret(!1)}).$$s=this,$$3.$$arity=-1,$$3):(($$4=function($a){null==$$4.$$s||$$4.$$s;var value=Opal.slice.call(arguments,0,arguments.length);if($truthy($$($nesting,"Opal").$destructure(value)))return nil;Opal.ret(!1)}).$$s=this,$$4.$$arity=-1,$$4)),!0}catch($returner){if($returner===Opal.returner)return $returner.$v;throw $returner}},$Enumerable_all$ques$1.$$arity=-1),Opal.def(self,"$any?",$Enumerable_any$ques$5=function(pattern){try{var $$6,$$7,$$8,$iter=$Enumerable_any$ques$5.$$p,block=$iter||nil;return $iter&&($Enumerable_any$ques$5.$$p=null),$iter&&($Enumerable_any$ques$5.$$p=null),$truthy(void 0!==pattern)?$send(this,"each",[],(($$6=function($a){null==$$6.$$s||$$6.$$s;var comparable=comparableForPattern(Opal.slice.call(arguments,0,arguments.length));if(!$truthy($send(pattern,"public_send",["==="].concat(Opal.to_a(comparable)))))return nil;Opal.ret(!0)}).$$s=this,$$6.$$arity=-1,$$6)):$send(this,"each",[],block!==nil?(($$7=function($a){null==$$7.$$s||$$7.$$s;var $post_args=Opal.slice.call(arguments,0,arguments.length);if(!$truthy(Opal.yieldX(block,Opal.to_a($post_args))))return nil;Opal.ret(!0)}).$$s=this,$$7.$$arity=-1,$$7):(($$8=function($a){null==$$8.$$s||$$8.$$s;var value=Opal.slice.call(arguments,0,arguments.length);if(!$truthy($$($nesting,"Opal").$destructure(value)))return nil;Opal.ret(!0)}).$$s=this,$$8.$$arity=-1,$$8)),!1}catch($returner){if($returner===Opal.returner)return $returner.$v;throw $returner}},$Enumerable_any$ques$5.$$arity=-1),Opal.def(self,"$chunk",$Enumerable_chunk$9=function(){var $$10,$$11,$iter=$Enumerable_chunk$9.$$p,block=$iter||nil;return $iter&&($Enumerable_chunk$9.$$p=null),$iter&&($Enumerable_chunk$9.$$p=null),block===nil?$send(this,"to_enum",["chunk"],(($$10=function(){return(null==$$10.$$s?this:$$10.$$s).$enumerator_size()}).$$s=this,$$10.$$arity=0,$$10)):$send($$$("::","Enumerator"),"new",[],(($$11=function(yielder){var self=null==$$11.$$s?this:$$11.$$s;null==yielder&&(yielder=nil);var previous=nil,accumulate=[];function releaseAccumulate(){0<accumulate.length&&yielder.$yield(previous,accumulate)}self.$each.$$p=function(value){var key=Opal.yield1(block,value);previous=key===nil?(releaseAccumulate(),accumulate=[],nil):(previous===nil||previous===key?accumulate.push(value):(releaseAccumulate(),accumulate=[value]),key)},self.$each(),releaseAccumulate()}).$$s=this,$$11.$$arity=1,$$11))},$Enumerable_chunk$9.$$arity=0),Opal.def(self,"$chunk_while",$Enumerable_chunk_while$12=function(){var $$13,$iter=$Enumerable_chunk_while$12.$$p,block=$iter||nil;return $iter&&($Enumerable_chunk_while$12.$$p=null),$iter&&($Enumerable_chunk_while$12.$$p=null),block!==nil||this.$raise($$($nesting,"ArgumentError"),"no block given"),$send(this,"slice_when",[],(($$13=function(before,after){null==$$13.$$s||$$13.$$s;return null==before&&(before=nil),null==after&&(after=nil),Opal.yieldX(block,[before,after])["$!"]()}).$$s=this,$$13.$$arity=2,$$13))},$Enumerable_chunk_while$12.$$arity=0),Opal.def(self,"$collect",$Enumerable_collect$14=function(){var $$15,$iter=$Enumerable_collect$14.$$p,block=$iter||nil;if($iter&&($Enumerable_collect$14.$$p=null),$iter&&($Enumerable_collect$14.$$p=null),block===nil)return $send(this,"enum_for",["collect"],(($$15=function(){return(null==$$15.$$s?this:$$15.$$s).$enumerator_size()}).$$s=this,$$15.$$arity=0,$$15));var result=[];return this.$each.$$p=function(){var value=Opal.yieldX(block,arguments);result.push(value)},this.$each(),result},$Enumerable_collect$14.$$arity=0),Opal.def(self,"$collect_concat",$Enumerable_collect_concat$16=function(){var $$17,$$18,$iter=$Enumerable_collect_concat$16.$$p,block=$iter||nil;return $iter&&($Enumerable_collect_concat$16.$$p=null),$iter&&($Enumerable_collect_concat$16.$$p=null),block===nil?$send(this,"enum_for",["collect_concat"],(($$17=function(){return(null==$$17.$$s?this:$$17.$$s).$enumerator_size()}).$$s=this,$$17.$$arity=0,$$17)):$send(this,"map",[],(($$18=function(item){null==$$18.$$s||$$18.$$s;return null==item&&(item=nil),Opal.yield1(block,item)}).$$s=this,$$18.$$arity=1,$$18)).$flatten(1)},$Enumerable_collect_concat$16.$$arity=0),Opal.def(self,"$count",$Enumerable_count$19=function(object){var $$20,$$21,$$22,$iter=$Enumerable_count$19.$$p,block=$iter||nil,result=nil;return $iter&&($Enumerable_count$19.$$p=null),$iter&&($Enumerable_count$19.$$p=null),result=0,null!=object&&block!==nil&&this.$warn("warning: given block not used"),$truthy(null!=object)?block=$send(this,"proc",[],(($$20=function($a){null==$$20.$$s||$$20.$$s;var args=Opal.slice.call(arguments,0,arguments.length);return $$($nesting,"Opal").$destructure(args)["$=="](object)}).$$s=this,$$20.$$arity=-1,$$20)):$truthy(block["$nil?"]())&&(block=$send(this,"proc",[],(($$21=function(){null==$$21.$$s||$$21.$$s;return!0}).$$s=this,$$21.$$arity=0,$$21))),$send(this,"each",[],(($$22=function($a){null==$$22.$$s||$$22.$$s;var $post_args=Opal.slice.call(arguments,0,arguments.length);return $truthy(Opal.yieldX(block,$post_args))?result++:nil}).$$s=this,$$22.$$arity=-1,$$22)),result},$Enumerable_count$19.$$arity=-1),Opal.def(self,"$cycle",$Enumerable_cycle$23=function(n){var $$24,$iter=$Enumerable_cycle$23.$$p,block=$iter||nil;if($iter&&($Enumerable_cycle$23.$$p=null),$iter&&($Enumerable_cycle$23.$$p=null),null==n&&(n=nil),block===nil)return $send(this,"enum_for",["cycle",n],(($$24=function(){var lhs,rhs=null==$$24.$$s?this:$$24.$$s;return $truthy(n["$nil?"]())?$truthy(rhs["$respond_to?"]("size"))?$$$($$($nesting,"Float"),"INFINITY"):nil:(n=$$($nesting,"Opal")["$coerce_to!"](n,$$($nesting,"Integer"),"to_int"),$truthy($rb_gt(n,0))?(lhs=rhs.$enumerator_size(),rhs=n,"number"==typeof lhs&&"number"==typeof rhs?lhs*rhs:lhs["$*"](rhs)):0)}).$$s=this,$$24.$$arity=0,$$24));if(!$truthy(n["$nil?"]())&&(n=$$($nesting,"Opal")["$coerce_to!"](n,$$($nesting,"Integer"),"to_int"),$truthy(n<=0)))return nil;var i,length,all=[];if(this.$each.$$p=function(){var param=$$($nesting,"Opal").$destructure(arguments);Opal.yield1(block,param);all.push(param)},this.$each(),0===all.length)return nil;if(n===nil)for(;;)for(i=0,length=all.length;i<length;i++)Opal.yield1(block,all[i]);else for(;1<n;){for(i=0,length=all.length;i<length;i++)Opal.yield1(block,all[i]);n--}},$Enumerable_cycle$23.$$arity=-1),Opal.def(self,"$detect",$Enumerable_detect$25=function(ifnone){try{var $$26,$iter=$Enumerable_detect$25.$$p,block=$iter||nil;return($iter&&($Enumerable_detect$25.$$p=null),$iter&&($Enumerable_detect$25.$$p=null),block===nil)?this.$enum_for("detect",ifnone):($send(this,"each",[],(($$26=function($a){null==$$26.$$s||$$26.$$s;var args=Opal.slice.call(arguments,0,arguments.length),value=$$($nesting,"Opal").$destructure(args);if(!$truthy(Opal.yield1(block,value)))return nil;Opal.ret(value)}).$$s=this,$$26.$$arity=-1,$$26)),void 0!==ifnone?"function"==typeof ifnone?ifnone():ifnone:nil)}catch($returner){if($returner===Opal.returner)return $returner.$v;throw $returner}},$Enumerable_detect$25.$$arity=-1),Opal.def(self,"$drop",$Enumerable_tally$108=function(number){number=$coerce_to(number,$$($nesting,"Integer"),"to_int"),$truthy(number<0)&&this.$raise($$($nesting,"ArgumentError"),"attempt to drop negative size");var result=[],current=0;return this.$each.$$p=function(){number<=current&&result.push($$($nesting,"Opal").$destructure(arguments)),current++},this.$each(),result},$Enumerable_tally$108.$$arity=1),Opal.def(self,"$drop_while",$Enumerable_drop_while$28=function(){var $iter=$Enumerable_drop_while$28.$$p,block=$iter||nil;if($iter&&($Enumerable_drop_while$28.$$p=null),$iter&&($Enumerable_drop_while$28.$$p=null),block===nil)return this.$enum_for("drop_while");var result=[],dropping=!0;return this.$each.$$p=function(){var value,param=$$($nesting,"Opal").$destructure(arguments);dropping?(value=Opal.yield1(block,param),$falsy(value)&&(dropping=!1,result.push(param))):result.push(param)},this.$each(),result},$Enumerable_drop_while$28.$$arity=0),Opal.def(self,"$each_cons",$Enumerable_each_cons$29=function(n){var $$30,$iter=$Enumerable_each_cons$29.$$p,block=$iter||nil;if($iter&&($Enumerable_each_cons$29.$$p=null),$iter&&($Enumerable_each_cons$29.$$p=null),$truthy(1!=arguments.length)&&this.$raise($$($nesting,"ArgumentError"),"wrong number of arguments ("+arguments.length+" for 1)"),n=$$($nesting,"Opal").$try_convert(n,$$($nesting,"Integer"),"to_int"),$truthy(n<=0)&&this.$raise($$($nesting,"ArgumentError"),"invalid size"),block===nil)return $send(this,"enum_for",["each_cons",n],(($$30=function(){var rhs=null==$$30.$$s?this:$$30.$$s,enum_size=nil,lhs=nil,enum_size=rhs.$enumerator_size();return $truthy(enum_size["$nil?"]())?nil:$truthy($truthy(lhs=enum_size["$=="](0))?lhs:(rhs=n,"number"==typeof(lhs=enum_size)&&"number"==typeof rhs?lhs<rhs:lhs["$<"](rhs)))?0:$rb_plus($rb_minus(enum_size,n),1)}).$$s=this,$$30.$$arity=0,$$30));var buffer=[];return this.$each.$$p=function(){var element=$$($nesting,"Opal").$destructure(arguments);buffer.push(element),buffer.length>n&&buffer.shift(),buffer.length==n&&Opal.yield1(block,buffer.slice(0,n))},this.$each(),nil},$Enumerable_each_cons$29.$$arity=1),Opal.def(self,"$each_entry",$Enumerable_each_entry$31=function($a){var $$32,data=$Enumerable_each_entry$31.$$p,block=data||nil;return data&&($Enumerable_each_entry$31.$$p=null),data&&($Enumerable_each_entry$31.$$p=null),data=Opal.slice.call(arguments,0,arguments.length),block===nil?$send(this,"to_enum",["each_entry"].concat(Opal.to_a(data)),(($$32=function(){return(null==$$32.$$s?this:$$32.$$s).$enumerator_size()}).$$s=this,$$32.$$arity=0,$$32)):(this.$each.$$p=function(){var item=$$($nesting,"Opal").$destructure(arguments);Opal.yield1(block,item)},this.$each.apply(this,data),this)},$Enumerable_each_entry$31.$$arity=-1),Opal.def(self,"$each_slice",$Enumerable_each_slice$33=function(n){var $$34,$iter=$Enumerable_each_slice$33.$$p,block=$iter||nil;if($iter&&($Enumerable_each_slice$33.$$p=null),$iter&&($Enumerable_each_slice$33.$$p=null),n=$coerce_to(n,$$($nesting,"Integer"),"to_int"),$truthy(n<=0)&&this.$raise($$($nesting,"ArgumentError"),"invalid slice size"),block===nil)return $send(this,"enum_for",["each_slice",n],(($$34=function(){var lhs,rhs=null==$$34.$$s?this:$$34.$$s;return $truthy(rhs["$respond_to?"]("size"))?(lhs=rhs.$size(),rhs=n,("number"==typeof lhs&&"number"==typeof rhs?lhs/rhs:lhs["$/"](rhs)).$ceil()):nil}).$$s=this,$$34.$$arity=0,$$34));var slice=[];return this.$each.$$p=function(){var param=$$($nesting,"Opal").$destructure(arguments);slice.push(param),slice.length===n&&(Opal.yield1(block,slice),slice=[])},this.$each(),0<slice.length&&Opal.yield1(block,slice),nil},$Enumerable_each_slice$33.$$arity=1),Opal.def(self,"$each_with_index",$Enumerable_each_with_index$35=function($a){var $$36,args=$Enumerable_each_with_index$35.$$p,block=args||nil;if(args&&($Enumerable_each_with_index$35.$$p=null),args&&($Enumerable_each_with_index$35.$$p=null),args=Opal.slice.call(arguments,0,arguments.length),args=args,block===nil)return $send(this,"enum_for",["each_with_index"].concat(Opal.to_a(args)),(($$36=function(){return(null==$$36.$$s?this:$$36.$$s).$enumerator_size()}).$$s=this,$$36.$$arity=0,$$36));var index=0;return this.$each.$$p=function(){var param=$$($nesting,"Opal").$destructure(arguments);block(param,index),index++},this.$each.apply(this,args),this},$Enumerable_each_with_index$35.$$arity=-1),Opal.def(self,"$each_with_object",$Enumerable_each_with_object$37=function(object){var $$38,$iter=$Enumerable_each_with_object$37.$$p,block=$iter||nil;return $iter&&($Enumerable_each_with_object$37.$$p=null),$iter&&($Enumerable_each_with_object$37.$$p=null),block===nil?$send(this,"enum_for",["each_with_object",object],(($$38=function(){return(null==$$38.$$s?this:$$38.$$s).$enumerator_size()}).$$s=this,$$38.$$arity=0,$$38)):(this.$each.$$p=function(){var param=$$($nesting,"Opal").$destructure(arguments);block(param,object)},this.$each(),object)},$Enumerable_each_with_object$37.$$arity=1),Opal.def(self,"$entries",$Enumerable_tally$108=function($a){var args=Opal.slice.call(arguments,0,arguments.length),result=[];return this.$each.$$p=function(){result.push($$($nesting,"Opal").$destructure(arguments))},this.$each.apply(this,args),result},$Enumerable_tally$108.$$arity=-1),Opal.def(self,"$filter_map",$Enumerable_filter_map$40=function(){var $$41,$iter=$Enumerable_filter_map$40.$$p,block=$iter||nil;return $iter&&($Enumerable_filter_map$40.$$p=null),$iter&&($Enumerable_filter_map$40.$$p=null),block===nil?$send(this,"enum_for",["filter_map"],(($$41=function(){return(null==$$41.$$s?this:$$41.$$s).$enumerator_size()}).$$s=this,$$41.$$arity=0,$$41)):$send($send(this,"map",[],block.$to_proc()),"select",[],"itself".$to_proc())},$Enumerable_filter_map$40.$$arity=0),$alias(self,"find","detect"),Opal.def(self,"$find_all",$Enumerable_find_all$42=function(){var $$43,$iter=$Enumerable_find_all$42.$$p,block=$iter||nil;if($iter&&($Enumerable_find_all$42.$$p=null),$iter&&($Enumerable_find_all$42.$$p=null),block===nil)return $send(this,"enum_for",["find_all"],(($$43=function(){return(null==$$43.$$s?this:$$43.$$s).$enumerator_size()}).$$s=this,$$43.$$arity=0,$$43));var result=[];return this.$each.$$p=function(){var param=$$($nesting,"Opal").$destructure(arguments),value=Opal.yield1(block,param);$truthy(value)&&result.push(param)},this.$each(),result},$Enumerable_find_all$42.$$arity=0),$alias(self,"filter","find_all"),Opal.def(self,"$find_index",$Enumerable_find_index$44=function(object){try{var $$45,$$46,$iter=$Enumerable_find_index$44.$$p,block=$iter||nil,index=nil;return($iter&&($Enumerable_find_index$44.$$p=null),$iter&&($Enumerable_find_index$44.$$p=null),$truthy(void 0===object&&block===nil))?this.$enum_for("find_index"):(null!=object&&block!==nil&&this.$warn("warning: given block not used"),index=0,$truthy(null!=object)?$send(this,"each",[],(($$45=function($a){null==$$45.$$s||$$45.$$s;var value=Opal.slice.call(arguments,0,arguments.length);return $$($nesting,"Opal").$destructure(value)["$=="](object)&&Opal.ret(index),index+=1}).$$s=this,$$45.$$arity=-1,$$45)):$send(this,"each",[],(($$46=function($a){null==$$46.$$s||$$46.$$s;var $post_args=Opal.slice.call(arguments,0,arguments.length);return $truthy(Opal.yieldX(block,Opal.to_a($post_args)))&&Opal.ret(index),index+=1}).$$s=this,$$46.$$arity=-1,$$46)),nil)}catch($returner){if($returner===Opal.returner)return $returner.$v;throw $returner}},$Enumerable_find_index$44.$$arity=-1),Opal.def(self,"$first",$Enumerable_tally$108=function(number){try{var $$48,$$49,result=nil,current=nil;return $truthy(void 0===number)?$send(this,"each",[],(($$48=function(value){null==$$48.$$s||$$48.$$s;null==value&&(value=nil),Opal.ret(value)}).$$s=this,$$48.$$arity=1,$$48)):(result=[],number=$coerce_to(number,$$($nesting,"Integer"),"to_int"),$truthy(number<0)&&this.$raise($$($nesting,"ArgumentError"),"attempt to take negative size"),$truthy(0==number)?[]:(current=0,$send(this,"each",[],(($$49=function($a){null==$$49.$$s||$$49.$$s;var args=Opal.slice.call(arguments,0,arguments.length);if(result.push($$($nesting,"Opal").$destructure(args)),!$truthy(number<=++current))return nil;Opal.ret(result)}).$$s=this,$$49.$$arity=-1,$$49)),result))}catch($returner){if($returner===Opal.returner)return $returner.$v;throw $returner}},$Enumerable_tally$108.$$arity=-1),$alias(self,"flat_map","collect_concat"),Opal.def(self,"$grep",$Enumerable_grep$50=function(pattern){var $$51,$iter=$Enumerable_grep$50.$$p,block=$iter||nil,result=nil;return $iter&&($Enumerable_grep$50.$$p=null),$iter&&($Enumerable_grep$50.$$p=null),result=[],$send(this,"each",[],(($$51=function($a){null==$$51.$$s||$$51.$$s;var value=Opal.slice.call(arguments,0,arguments.length),cmp=comparableForPattern(value);return $truthy($send(pattern,"__send__",["==="].concat(Opal.to_a(cmp))))?(block!==nil?($truthy($rb_gt(value.$length(),1))&&(value=[value]),value=Opal.yieldX(block,Opal.to_a(value))):$truthy($rb_le(value.$length(),1))&&(value=value["$[]"](0)),result.$push(value)):nil}).$$s=this,$$51.$$arity=-1,$$51)),result},$Enumerable_grep$50.$$arity=1),Opal.def(self,"$grep_v",$Enumerable_grep_v$52=function(pattern){var $$53,$iter=$Enumerable_grep_v$52.$$p,block=$iter||nil,result=nil;return $iter&&($Enumerable_grep_v$52.$$p=null),$iter&&($Enumerable_grep_v$52.$$p=null),result=[],$send(this,"each",[],(($$53=function($a){null==$$53.$$s||$$53.$$s;var value=Opal.slice.call(arguments,0,arguments.length),cmp=comparableForPattern(value);return $truthy($send(pattern,"__send__",["==="].concat(Opal.to_a(cmp))))?nil:(block!==nil?($truthy($rb_gt(value.$length(),1))&&(value=[value]),value=Opal.yieldX(block,Opal.to_a(value))):$truthy($rb_le(value.$length(),1))&&(value=value["$[]"](0)),result.$push(value))}).$$s=this,$$53.$$arity=-1,$$53)),result},$Enumerable_grep_v$52.$$arity=1),Opal.def(self,"$group_by",$Enumerable_group_by$54=function(){var $$55,$iter=$Enumerable_group_by$54.$$p,block=$iter||nil,hash=nil,$ret_or_2=nil,$writer=nil;return $iter&&($Enumerable_group_by$54.$$p=null),$iter&&($Enumerable_group_by$54.$$p=null),block===nil?$send(this,"enum_for",["group_by"],(($$55=function(){return(null==$$55.$$s?this:$$55.$$s).$enumerator_size()}).$$s=this,$$55.$$arity=0,$$55)):(hash=$hash2([],{}),this.$each.$$p=function(){var param=$$($nesting,"Opal").$destructure(arguments),value=Opal.yield1(block,param);($truthy($ret_or_2=hash["$[]"](value))?$ret_or_2:($writer=[value,[]],$send(hash,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]))["$<<"](param)},this.$each(),hash)},$Enumerable_group_by$54.$$arity=0),Opal.def(self,"$include?",$Enumerable_tally$108=function(obj){try{var $$57;return $send(this,"each",[],(($$57=function($a){null==$$57.$$s||$$57.$$s;var args=Opal.slice.call(arguments,0,arguments.length);if(!$$($nesting,"Opal").$destructure(args)["$=="](obj))return nil;Opal.ret(!0)}).$$s=this,$$57.$$arity=-1,$$57)),!1}catch($returner){if($returner===Opal.returner)return $returner.$v;throw $returner}},$Enumerable_tally$108.$$arity=1),Opal.def(self,"$inject",$Enumerable_inject$58=function(object,sym){var $iter=$Enumerable_inject$58.$$p,block=$iter||nil;$iter&&($Enumerable_inject$58.$$p=null),$iter&&($Enumerable_inject$58.$$p=null);var result=object;return block!==nil&&void 0===sym?this.$each.$$p=function(){var value=$$($nesting,"Opal").$destructure(arguments);result=(void 0!==result&&(value=Opal.yieldX(block,[result,value])),value)}:(void 0===sym&&($$($nesting,"Symbol")["$==="](object)||this.$raise($$($nesting,"TypeError"),object.$inspect()+" is not a Symbol"),sym=object,result=void 0),this.$each.$$p=function(){var value=$$($nesting,"Opal").$destructure(arguments);result=void 0!==result?result.$__send__(sym,value):value}),this.$each(),null==result?nil:result},$Enumerable_inject$58.$$arity=-1),Opal.def(self,"$lazy",$Enumerable_tally$108=function(){var $$60;return $send($$$($$($nesting,"Enumerator"),"Lazy"),"new",[this,this.$enumerator_size()],(($$60=function(enum$,$a){var $post_args;null==$$60.$$s||$$60.$$s;return null==enum$&&(enum$=nil),$post_args=Opal.slice.call(arguments,1,arguments.length),$send(enum$,"yield",Opal.to_a($post_args))}).$$s=this,$$60.$$arity=-2,$$60))},$Enumerable_tally$108.$$arity=0),Opal.def(self,"$enumerator_size",$Enumerable_tally$108=function(){return $truthy(this["$respond_to?"]("size"))?this.$size():nil},$Enumerable_tally$108.$$arity=0),$alias(self,"map","collect"),Opal.def(self,"$max",$Enumerable_max$62=function(n){var result,value,$iter=$Enumerable_max$62.$$p,block=$iter||nil,self=this;return $iter&&($Enumerable_max$62.$$p=null),$iter&&($Enumerable_max$62.$$p=null),void 0===n||n===nil?(self.$each.$$p=function(){var item=$$($nesting,"Opal").$destructure(arguments);void 0!==result?((value=block!==nil?Opal.yieldX(block,[item,result]):item["$<=>"](result))===nil&&self.$raise($$($nesting,"ArgumentError"),"comparison failed"),0<value&&(result=item)):result=item},self.$each(),void 0===result?nil:result):(n=$coerce_to(n,$$($nesting,"Integer"),"to_int"),$send(self,"sort",[],block.$to_proc()).$reverse().$first(n))},$Enumerable_max$62.$$arity=-1),Opal.def(self,"$max_by",$Enumerable_max_by$63=function(n){var $$64,result,by,$iter=$Enumerable_max_by$63.$$p,block=$iter||nil;return $iter&&($Enumerable_max_by$63.$$p=null),$iter&&($Enumerable_max_by$63.$$p=null),null==n&&(n=nil),$truthy(block)?$truthy(n["$nil?"]())?(this.$each.$$p=function(){var param=$$($nesting,"Opal").$destructure(arguments),value=Opal.yield1(block,param);if(void 0===result)return result=param,void(by=value);0<value["$<=>"](by)&&(result=param,by=value)},this.$each(),void 0===result?nil:result):$send(this,"sort_by",[],block.$to_proc()).$reverse().$take(n):$send(this,"enum_for",["max_by",n],(($$64=function(){return(null==$$64.$$s?this:$$64.$$s).$enumerator_size()}).$$s=this,$$64.$$arity=0,$$64))},$Enumerable_max_by$63.$$arity=-1),$alias(self,"member?","include?"),Opal.def(self,"$min",$Enumerable_min$65=function(n){var $$66,result,$iter=$Enumerable_min$65.$$p,block=$iter||nil,self=this;return $iter&&($Enumerable_min$65.$$p=null),$iter&&($Enumerable_min$65.$$p=null),null==n&&(n=nil),$truthy(n["$nil?"]())?(self.$each.$$p=block!==nil?function(){var value,param=$$($nesting,"Opal").$destructure(arguments);void 0!==result?((value=block(param,result))===nil&&self.$raise($$($nesting,"ArgumentError"),"comparison failed"),value<0&&(result=param)):result=param}:function(){var param=$$($nesting,"Opal").$destructure(arguments);(void 0===result||$$($nesting,"Opal").$compare(param,result)<0)&&(result=param)},self.$each(),void 0===result?nil:result):(block!==nil?$send(self,"sort",[],(($$66=function(a,b){null==$$66.$$s||$$66.$$s;return null==a&&(a=nil),null==b&&(b=nil),Opal.yieldX(block,[a,b])}).$$s=self,$$66.$$arity=2,$$66)):self.$sort()).$take(n)},$Enumerable_min$65.$$arity=-1),Opal.def(self,"$min_by",$Enumerable_min_by$67=function(n){var $$68,result,by,$iter=$Enumerable_min_by$67.$$p,block=$iter||nil;return $iter&&($Enumerable_min_by$67.$$p=null),$iter&&($Enumerable_min_by$67.$$p=null),null==n&&(n=nil),$truthy(block)?$truthy(n["$nil?"]())?(this.$each.$$p=function(){var param=$$($nesting,"Opal").$destructure(arguments),value=Opal.yield1(block,param);if(void 0===result)return result=param,void(by=value);value["$<=>"](by)<0&&(result=param,by=value)},this.$each(),void 0===result?nil:result):$send(this,"sort_by",[],block.$to_proc()).$take(n):$send(this,"enum_for",["min_by",n],(($$68=function(){return(null==$$68.$$s?this:$$68.$$s).$enumerator_size()}).$$s=this,$$68.$$arity=0,$$68))},$Enumerable_min_by$67.$$arity=-1),Opal.def(self,"$minmax",$Enumerable_minmax$69=function(){var $$70,$ret_or_3,$iter=$Enumerable_minmax$69.$$p,block=$iter||nil,self=this;$iter&&($Enumerable_minmax$69.$$p=null),$iter&&($Enumerable_minmax$69.$$p=null),block=$truthy($ret_or_3=block)?$ret_or_3:$send(self,"proc",[],(($$70=function(a,b){null==$$70.$$s||$$70.$$s;return null==a&&(a=nil),null==b&&(b=nil),a["$<=>"](b)}).$$s=self,$$70.$$arity=2,$$70));var min=nil,max=nil,first_time=!0;return self.$each.$$p=function(){var max_cmp,element=$$($nesting,"Opal").$destructure(arguments);first_time?(min=max=element,first_time=!1):((max_cmp=block.$call(min,element))===nil?self.$raise($$($nesting,"ArgumentError"),"comparison failed"):0<max_cmp&&(min=element),(max_cmp=block.$call(max,element))===nil?self.$raise($$($nesting,"ArgumentError"),"comparison failed"):max_cmp<0&&(max=element))},self.$each(),[min,max]},$Enumerable_minmax$69.$$arity=0),Opal.def(self,"$minmax_by",$Enumerable_minmax_by$71=function(){var $$72,$iter=$Enumerable_minmax_by$71.$$p,block=$iter||nil;if($iter&&($Enumerable_minmax_by$71.$$p=null),$iter&&($Enumerable_minmax_by$71.$$p=null),!$truthy(block))return $send(this,"enum_for",["minmax_by"],(($$72=function(){return(null==$$72.$$s?this:$$72.$$s).$enumerator_size()}).$$s=this,$$72.$$arity=0,$$72));var min_by,max_by,min_result=nil,max_result=nil;return this.$each.$$p=function(){var param=$$($nesting,"Opal").$destructure(arguments),value=Opal.yield1(block,param);(void 0===min_by||value["$<=>"](min_by)<0)&&(min_result=param,min_by=value),(void 0===max_by||0<value["$<=>"](max_by))&&(max_result=param,max_by=value)},this.$each(),[min_result,max_result]},$Enumerable_minmax_by$71.$$arity=0),Opal.def(self,"$none?",$Enumerable_none$ques$73=function(pattern){try{var $$74,$$75,$$76,$iter=$Enumerable_none$ques$73.$$p,block=$iter||nil;return $iter&&($Enumerable_none$ques$73.$$p=null),$iter&&($Enumerable_none$ques$73.$$p=null),$truthy(void 0!==pattern)?$send(this,"each",[],(($$74=function($a){null==$$74.$$s||$$74.$$s;var comparable=comparableForPattern(Opal.slice.call(arguments,0,arguments.length));if(!$truthy($send(pattern,"public_send",["==="].concat(Opal.to_a(comparable)))))return nil;Opal.ret(!1)}).$$s=this,$$74.$$arity=-1,$$74)):$send(this,"each",[],block!==nil?(($$75=function($a){null==$$75.$$s||$$75.$$s;var $post_args=Opal.slice.call(arguments,0,arguments.length);if(!$truthy(Opal.yieldX(block,Opal.to_a($post_args))))return nil;Opal.ret(!1)}).$$s=this,$$75.$$arity=-1,$$75):(($$76=function($a){null==$$76.$$s||$$76.$$s;var value=Opal.slice.call(arguments,0,arguments.length),item=$$($nesting,"Opal").$destructure(value);if(!$truthy(item))return nil;Opal.ret(!1)}).$$s=this,$$76.$$arity=-1,$$76)),!0}catch($returner){if($returner===Opal.returner)return $returner.$v;throw $returner}},$Enumerable_none$ques$73.$$arity=-1),Opal.def(self,"$one?",$Enumerable_one$ques$77=function(pattern){try{var $$78,$$79,$$80,$iter=$Enumerable_one$ques$77.$$p,block=$iter||nil,count=nil;return $iter&&($Enumerable_one$ques$77.$$p=null),$iter&&($Enumerable_one$ques$77.$$p=null),$truthy(void(count=0)!==pattern)?$send(this,"each",[],(($$78=function($a){null==$$78.$$s||$$78.$$s;var comparable=comparableForPattern(Opal.slice.call(arguments,0,arguments.length));return $truthy($send(pattern,"public_send",["==="].concat(Opal.to_a(comparable))))?(count=$rb_plus(count,1),$truthy($rb_gt(count,1))?void Opal.ret(!1):nil):nil}).$$s=this,$$78.$$arity=-1,$$78)):$send(this,"each",[],block!==nil?(($$79=function($a){null==$$79.$$s||$$79.$$s;var value=Opal.slice.call(arguments,0,arguments.length);return $truthy(Opal.yieldX(block,Opal.to_a(value)))?(count=$rb_plus(count,1),$truthy($rb_gt(count,1))?void Opal.ret(!1):nil):nil}).$$s=this,$$79.$$arity=-1,$$79):(($$80=function($a){null==$$80.$$s||$$80.$$s;var value=Opal.slice.call(arguments,0,arguments.length);return $truthy($$($nesting,"Opal").$destructure(value))?(count=$rb_plus(count,1),$truthy($rb_gt(count,1))?void Opal.ret(!1):nil):nil}).$$s=this,$$80.$$arity=-1,$$80)),count["$=="](1)}catch($returner){if($returner===Opal.returner)return $returner.$v;throw $returner}},$Enumerable_one$ques$77.$$arity=-1),Opal.def(self,"$partition",$Enumerable_partition$81=function(){var $$82,$iter=$Enumerable_partition$81.$$p,block=$iter||nil;if($iter&&($Enumerable_partition$81.$$p=null),$iter&&($Enumerable_partition$81.$$p=null),block===nil)return $send(this,"enum_for",["partition"],(($$82=function(){return(null==$$82.$$s?this:$$82.$$s).$enumerator_size()}).$$s=this,$$82.$$arity=0,$$82));var truthy=[],falsy=[];return this.$each.$$p=function(){var param=$$($nesting,"Opal").$destructure(arguments),value=Opal.yield1(block,param);($truthy(value)?truthy:falsy).push(param)},this.$each(),[truthy,falsy]},$Enumerable_partition$81.$$arity=0),$alias(self,"reduce","inject"),Opal.def(self,"$reject",$Enumerable_reject$83=function(){var $$84,$iter=$Enumerable_reject$83.$$p,block=$iter||nil;if($iter&&($Enumerable_reject$83.$$p=null),$iter&&($Enumerable_reject$83.$$p=null),block===nil)return $send(this,"enum_for",["reject"],(($$84=function(){return(null==$$84.$$s?this:$$84.$$s).$enumerator_size()}).$$s=this,$$84.$$arity=0,$$84));var result=[];return this.$each.$$p=function(){var param=$$($nesting,"Opal").$destructure(arguments),value=Opal.yield1(block,param);$falsy(value)&&result.push(param)},this.$each(),result},$Enumerable_reject$83.$$arity=0),Opal.def(self,"$reverse_each",$Enumerable_reverse_each$85=function(){var $$86,$iter=$Enumerable_reverse_each$85.$$p,block=$iter||nil;if($iter&&($Enumerable_reverse_each$85.$$p=null),$iter&&($Enumerable_reverse_each$85.$$p=null),block===nil)return $send(this,"enum_for",["reverse_each"],(($$86=function(){return(null==$$86.$$s?this:$$86.$$s).$enumerator_size()}).$$s=this,$$86.$$arity=0,$$86));var result=[];this.$each.$$p=function(){result.push(arguments)},this.$each();for(var i=result.length-1;0<=i;i--)Opal.yieldX(block,result[i]);return result},$Enumerable_reverse_each$85.$$arity=0),$alias(self,"select","find_all"),Opal.def(self,"$slice_before",$Enumerable_slice_before$87=function(pattern){var $$88,$iter=$Enumerable_slice_before$87.$$p,block=$iter||nil;return $iter&&($Enumerable_slice_before$87.$$p=null),$iter&&($Enumerable_slice_before$87.$$p=null),$truthy(void 0===pattern&&block===nil)&&this.$raise($$($nesting,"ArgumentError"),"both pattern and block are given"),$truthy(void 0!==pattern&&block!==nil||1<arguments.length)&&this.$raise($$($nesting,"ArgumentError"),"wrong number of arguments ("+arguments.length+" expected 1)"),$send($$($nesting,"Enumerator"),"new",[],(($$88=function(e){var self=null==$$88.$$s?this:$$88.$$s;null==e&&(e=nil);var slice=[];self.$each.$$p=block!==nil?void 0===pattern?function(){var param=$$($nesting,"Opal").$destructure(arguments),value=Opal.yield1(block,param);$truthy(value)&&0<slice.length&&(e["$<<"](slice),slice=[]),slice.push(param)}:function(){var param=$$($nesting,"Opal").$destructure(arguments),value=block(param,pattern.$dup());$truthy(value)&&0<slice.length&&(e["$<<"](slice),slice=[]),slice.push(param)}:function(){var param=$$($nesting,"Opal").$destructure(arguments),value=pattern["$==="](param);$truthy(value)&&0<slice.length&&(e["$<<"](slice),slice=[]),slice.push(param)},self.$each(),0<slice.length&&e["$<<"](slice)}).$$s=this,$$88.$$arity=1,$$88))},$Enumerable_slice_before$87.$$arity=-1),Opal.def(self,"$slice_after",$Enumerable_slice_after$89=function(pattern){var $$90,$$91,$iter=$Enumerable_slice_after$89.$$p,block=$iter||nil;return $iter&&($Enumerable_slice_after$89.$$p=null),$iter&&($Enumerable_slice_after$89.$$p=null),$truthy(void 0===pattern&&block===nil)&&this.$raise($$($nesting,"ArgumentError"),"both pattern and block are given"),$truthy(void 0!==pattern&&block!==nil||1<arguments.length)&&this.$raise($$($nesting,"ArgumentError"),"wrong number of arguments ("+arguments.length+" expected 1)"),$truthy(void 0!==pattern)&&(block=$send(this,"proc",[],(($$90=function(e){null==$$90.$$s||$$90.$$s;return null==e&&(e=nil),pattern["$==="](e)}).$$s=this,$$90.$$arity=1,$$90))),$send($$($nesting,"Enumerator"),"new",[],(($$91=function(yielder){var accumulate,self=null==$$91.$$s?this:$$91.$$s;null==yielder&&(yielder=nil),self.$each.$$p=function(){var element=$$($nesting,"Opal").$destructure(arguments),end_chunk=Opal.yield1(block,element);null==accumulate&&(accumulate=[]),$truthy(end_chunk)?(accumulate.push(element),yielder.$yield(accumulate),accumulate=null):accumulate.push(element)},self.$each(),null!=accumulate&&yielder.$yield(accumulate)}).$$s=this,$$91.$$arity=1,$$91))},$Enumerable_slice_after$89.$$arity=-1),Opal.def(self,"$slice_when",$Enumerable_slice_when$92=function(){var $$93,$iter=$Enumerable_slice_when$92.$$p,block=$iter||nil;return $iter&&($Enumerable_slice_when$92.$$p=null),$iter&&($Enumerable_slice_when$92.$$p=null),block!==nil||this.$raise($$($nesting,"ArgumentError"),"wrong number of arguments (0 for 1)"),$send($$($nesting,"Enumerator"),"new",[],(($$93=function(yielder){var self=null==$$93.$$s?this:$$93.$$s;null==yielder&&(yielder=nil);var slice=nil,last_after=nil;self.$each_cons.$$p=function(){var match=$$($nesting,"Opal").$destructure(arguments),before=match[0],after=match[1],match=Opal.yieldX(block,[before,after]);last_after=after,slice===nil&&(slice=[]),$truthy(match)?(slice.push(before),yielder.$yield(slice),slice=[]):slice.push(before)},self.$each_cons(2),slice!==nil&&(slice.push(last_after),yielder.$yield(slice))}).$$s=this,$$93.$$arity=1,$$93))},$Enumerable_slice_when$92.$$arity=0),Opal.def(self,"$sort",$Enumerable_sort$94=function(){var $$95,ary,$iter=$Enumerable_sort$94.$$p,block=$iter||nil;return $iter&&($Enumerable_sort$94.$$p=null),$iter&&($Enumerable_sort$94.$$p=null),ary=this.$to_a(),block!==nil||(block=$lambda((($$95=function(a,b){null==$$95.$$s||$$95.$$s;return null==a&&(a=nil),null==b&&(b=nil),a["$<=>"](b)}).$$s=this,$$95.$$arity=2,$$95))),$send(ary,"sort",[],block.$to_proc())},$Enumerable_sort$94.$$arity=0),Opal.def(self,"$sort_by",$Enumerable_sort_by$96=function(){var $$97,$$98,$$99,$$100,dup,$iter=$Enumerable_sort_by$96.$$p,block=$iter||nil;return $iter&&($Enumerable_sort_by$96.$$p=null),$iter&&($Enumerable_sort_by$96.$$p=null),block===nil?$send(this,"enum_for",["sort_by"],(($$97=function(){return(null==$$97.$$s?this:$$97.$$s).$enumerator_size()}).$$s=this,$$97.$$arity=0,$$97)):(dup=$send(this,"map",[],(($$98=function(){null==$$98.$$s||$$98.$$s;var arg=$$($nesting,"Opal").$destructure(arguments);return[Opal.yield1(block,arg),arg]}).$$s=this,$$98.$$arity=0,$$98)),$send(dup,"sort!",[],(($$99=function(a,b){null==$$99.$$s||$$99.$$s;return null==a&&(a=nil),null==b&&(b=nil),a[0]["$<=>"](b[0])}).$$s=this,$$99.$$arity=2,$$99)),$send(dup,"map!",[],(($$100=function(i){null==$$100.$$s||$$100.$$s;return null==i&&(i=nil),i[1]}).$$s=this,$$100.$$arity=1,$$100)))},$Enumerable_sort_by$96.$$arity=0),Opal.def(self,"$sum",$Enumerable_sum$101=function(initial){var $$102,$iter=$Enumerable_sum$101.$$p,$yield=$iter||nil,result=nil;return $iter&&($Enumerable_sum$101.$$p=null),null==initial&&(initial=0),result=initial,$send(this,"each",[],(($$102=function($a){null==$$102.$$s||$$102.$$s;var args=Opal.slice.call(arguments,0,arguments.length),item=$yield!==nil?Opal.yieldX($yield,Opal.to_a(args)):$$($nesting,"Opal").$destructure(args);return result=$rb_plus(result,item)}).$$s=this,$$102.$$arity=-1,$$102)),result},$Enumerable_sum$101.$$arity=-1),Opal.def(self,"$take",$Enumerable_tally$108=function(num){return this.$first(num)},$Enumerable_tally$108.$$arity=1),Opal.def(self,"$take_while",$Enumerable_take_while$104=function(){try{var $$105,$iter=$Enumerable_take_while$104.$$p,block=$iter||nil,result=nil;return($iter&&($Enumerable_take_while$104.$$p=null),$iter&&($Enumerable_take_while$104.$$p=null),$truthy(block))?(result=[],$send(this,"each",[],(($$105=function($a){null==$$105.$$s||$$105.$$s;var args=Opal.slice.call(arguments,0,arguments.length),value=$$($nesting,"Opal").$destructure(args);return $truthy(Opal.yield1(block,value))||Opal.ret(result),result.push(value)}).$$s=this,$$105.$$arity=-1,$$105))):this.$enum_for("take_while")}catch($returner){if($returner===Opal.returner)return $returner.$v;throw $returner}},$Enumerable_take_while$104.$$arity=0),Opal.def(self,"$uniq",$Enumerable_uniq$106=function(){var $$107,$iter=$Enumerable_uniq$106.$$p,block=$iter||nil,hash=nil;return $iter&&($Enumerable_uniq$106.$$p=null),$iter&&($Enumerable_uniq$106.$$p=null),hash=$hash2([],{}),$send(this,"each",[],(($$107=function($a){null==$$107.$$s||$$107.$$s;var $writer,args=Opal.slice.call(arguments,0,arguments.length),value=$$($nesting,"Opal").$destructure(args),produced=block!==nil?Opal.yield1(block,value):value;return $truthy(hash["$key?"](produced))?nil:($writer=[produced,value],$send(hash,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)])}).$$s=this,$$107.$$arity=-1,$$107)),hash.$values()},$Enumerable_uniq$106.$$arity=0),Opal.def(self,"$tally",$Enumerable_tally$108=function(){return $send($send(this,"group_by",[],"itself".$to_proc()),"transform_values",[],"count".$to_proc())},$Enumerable_tally$108.$$arity=0),$alias(self,"to_a","entries"),Opal.def(self,"$to_h",$Enumerable_to_h$109=function($a){var args=$Enumerable_to_h$109.$$p,block=args||nil,self=this;if(args&&($Enumerable_to_h$109.$$p=null),args&&($Enumerable_to_h$109.$$p=null),args=Opal.slice.call(arguments,0,arguments.length),block!==nil)return $send($send(self,"map",[],block.$to_proc()),"to_h",Opal.to_a(args));var hash=$hash2([],{});return self.$each.$$p=function(){var key=$$($nesting,"Opal").$destructure(arguments),val=$$($nesting,"Opal")["$coerce_to?"](key,$$($nesting,"Array"),"to_ary");val.$$is_array||self.$raise($$($nesting,"TypeError"),"wrong element type "+val.$class()+" (expected array)"),2!==val.length&&self.$raise($$($nesting,"ArgumentError"),"wrong array length (expected 2, was "+val.$length()+")"),key=val[0],val=val[1],Opal.hash_put(hash,key,val)},self.$each.apply(self,args),hash},$Enumerable_to_h$109.$$arity=-1),Opal.def(self,"$zip",$Enumerable_zip$110=function($a){var others=$Enumerable_zip$110.$$p;return others&&($Enumerable_zip$110.$$p=null),others&&($Enumerable_zip$110.$$p=null),others=Opal.slice.call(arguments,0,arguments.length),$send(this.$to_a(),"zip",Opal.to_a(others))},$Enumerable_zip$110.$$arity=-1),nil&&"zip"}($nesting[0],$nesting)},Opal.modules["corelib/enumerator"]=function(Opal){function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}function $rb_lt(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs<rhs:lhs["$<"](rhs)}var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$breaker=Opal.breaker,$slice=Opal.slice,$falsy=Opal.falsy,$truthy=Opal.truthy,$coerce_to=Opal.coerce_to,$klass=Opal.klass,$send=Opal.send,$alias=Opal.alias,$send2=Opal.send2,$find_super=Opal.find_super;return Opal.add_stubs(["$require","$include","$allocate","$new","$to_proc","$!","$respond_to?","$nil?","$empty?","$+","$class","$__send__","$call","$enum_for","$size","$destructure","$inspect","$any?","$[]","$raise","$yield","$each","$enumerator_size","$try_convert","$<","$===","$for"]),self.$require("corelib/enumerable"),function($Yielder_$lt$lt$14,$Yielder_yield$13){var $Enumerator_for$1,$Enumerator_initialize$2,$Enumerator_each$3,$Enumerator_with_index$5,$Enumerator_each_with_index$7,$Yielder_initialize$12,self=$klass($Yielder_$lt$lt$14,null,"Enumerator"),$nesting=[self].concat($Yielder_yield$13);return 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$iter&&($Enumerator_initialize$2.$$p=null),$iter&&($Enumerator_initialize$2.$$p=null),Opal.slice.call(arguments,0,arguments.length),$truthy(block)?(self.object=$send($$($nesting,"Generator"),"new",[],block.$to_proc()),self.method="each",self.args=[],self.size=$a||nil,$truthy($truthy($ret_or_1=self.size)?self.size["$respond_to?"]("call")["$!"]():$ret_or_1)?self.size=$coerce_to(self.size,$$($nesting,"Integer"),"to_int"):nil):(self.object=$a,self.method=argument_1||"each",self.args=$slice.call(arguments,2),self.size=nil)},$Enumerator_initialize$2.$$arity=-1),Opal.def(self,"$each",$Enumerator_each$3=function($a){var args=$Enumerator_each$3.$$p,block=args||nil,$ret_or_2=nil;return 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null==enum$&&(enum$=nil),args=Opal.slice.call(arguments,1,arguments.length),$truthy($rb_lt(taken,n))?($send(enum$,"yield",Opal.to_a(args)),taken=$rb_plus(taken,1)):self.$raise($$($nesting,"StopLazyError"))}).$$s=this,$$38.$$arity=-2,$$38))},$Lazy_take$37.$$arity=1),Opal.def($Lazy_inspect$41,"$take_while",$Lazy_take_while$39=function(){var $$40,$iter=$Lazy_take_while$39.$$p,block=$iter||nil;return $iter&&($Lazy_take_while$39.$$p=null),$iter&&($Lazy_take_while$39.$$p=null),$truthy(block)||this.$raise($$($nesting,"ArgumentError"),"tried to call lazy take_while without a block"),$send($$($nesting,"Lazy"),"new",[this,nil],(($$40=function(enum$,$a){var args,self=null==$$40.$$s?this:$$40.$$s;null==enum$&&(enum$=nil),args=Opal.slice.call(arguments,1,arguments.length);var 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lhs&&"number"==typeof rhs?lhs/rhs:lhs["$/"](rhs)}var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$klass=Opal.klass,$truthy=Opal.truthy,$alias=Opal.alias,$hash2=Opal.hash2,$send=Opal.send;return Opal.add_stubs(["$require","$include","$instance_of?","$class","$Float","$respond_to?","$coerce","$__send__","$===","$raise","$equal?","$-","$*","$div","$<","$-@","$ceil","$to_f","$denominator","$to_r","$==","$floor","$/","$%","$Complex","$zero?","$numerator","$abs","$arg","$coerce_to!","$round","$<=>","$compare","$enum_for","$to_proc","$negative?","$>=","$<=","$+","$to_i","$truncate","$>"]),self.$require("corelib/comparable"),function($Numeric_infinite$ques$38,$Numeric_finite$ques$37){var $Numeric_step$28,$Numeric_infinite$ques$38=$klass($Numeric_infinite$ques$38,null,"Numeric"),$nesting=[$Numeric_infinite$ques$38].concat($Numeric_finite$ques$37);return 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$rb_lt(this,0)?this["$-@"]():this},$Numeric_finite$ques$37.$$arity=0),Opal.def($Numeric_infinite$ques$38,"$abs2",$Numeric_finite$ques$37=function(){return $rb_times(this,this)},$Numeric_finite$ques$37.$$arity=0),Opal.def($Numeric_infinite$ques$38,"$angle",$Numeric_finite$ques$37=function(){return $rb_lt(this,0)?$$$($$($nesting,"Math"),"PI"):0},$Numeric_finite$ques$37.$$arity=0),$alias($Numeric_infinite$ques$38,"arg","angle"),Opal.def($Numeric_infinite$ques$38,"$ceil",$Numeric_finite$ques$37=function(ndigits){return null==ndigits&&(ndigits=0),this.$to_f().$ceil(ndigits)},$Numeric_finite$ques$37.$$arity=-1),Opal.def($Numeric_infinite$ques$38,"$conj",$Numeric_finite$ques$37=function(){return this},$Numeric_finite$ques$37.$$arity=0),$alias($Numeric_infinite$ques$38,"conjugate","conj"),Opal.def($Numeric_infinite$ques$38,"$denominator",$Numeric_finite$ques$37=function(){return this.$to_r().$denominator()},$Numeric_finite$ques$37.$$arity=0),Opal.def($Numeric_infinite$ques$38,"$div",$Numeric_finite$ques$37=function(other){return other["$=="](0)&&this.$raise($$($nesting,"ZeroDivisionError"),"divided by o"),$rb_divide(this,other).$floor()},$Numeric_finite$ques$37.$$arity=1),Opal.def($Numeric_infinite$ques$38,"$divmod",$Numeric_finite$ques$37=function(other){return[this.$div(other),this["$%"](other)]},$Numeric_finite$ques$37.$$arity=1),Opal.def($Numeric_infinite$ques$38,"$fdiv",$Numeric_finite$ques$37=function(other){return $rb_divide(this.$to_f(),other)},$Numeric_finite$ques$37.$$arity=1),Opal.def($Numeric_infinite$ques$38,"$floor",$Numeric_finite$ques$37=function(ndigits){return null==ndigits&&(ndigits=0),this.$to_f().$floor(ndigits)},$Numeric_finite$ques$37.$$arity=-1),Opal.def($Numeric_infinite$ques$38,"$i",$Numeric_finite$ques$37=function(){return this.$Complex(0,this)},$Numeric_finite$ques$37.$$arity=0),Opal.def($Numeric_infinite$ques$38,"$imag",$Numeric_finite$ques$37=function(){return 0},$Numeric_finite$ques$37.$$arity=0),$alias($Numeric_infinite$ques$38,"imaginary","imag"),Opal.def($Numeric_infinite$ques$38,"$integer?",$Numeric_finite$ques$37=function(){return!1},$Numeric_finite$ques$37.$$arity=0),$alias($Numeric_infinite$ques$38,"magnitude","abs"),$alias($Numeric_infinite$ques$38,"modulo","%"),Opal.def($Numeric_infinite$ques$38,"$nonzero?",$Numeric_finite$ques$37=function(){return $truthy(this["$zero?"]())?nil:this},$Numeric_finite$ques$37.$$arity=0),Opal.def($Numeric_infinite$ques$38,"$numerator",$Numeric_finite$ques$37=function(){return this.$to_r().$numerator()},$Numeric_finite$ques$37.$$arity=0),$alias($Numeric_infinite$ques$38,"phase","arg"),Opal.def($Numeric_infinite$ques$38,"$polar",$Numeric_finite$ques$37=function(){return[this.$abs(),this.$arg()]},$Numeric_finite$ques$37.$$arity=0),Opal.def($Numeric_infinite$ques$38,"$quo",$Numeric_finite$ques$37=function(other){return $rb_divide($$($nesting,"Opal")["$coerce_to!"](this,$$($nesting,"Rational"),"to_r"),other)},$Numeric_finite$ques$37.$$arity=1),Opal.def($Numeric_infinite$ques$38,"$real",$Numeric_finite$ques$37=function(){return this},$Numeric_finite$ques$37.$$arity=0),Opal.def($Numeric_infinite$ques$38,"$real?",$Numeric_finite$ques$37=function(){return!0},$Numeric_finite$ques$37.$$arity=0),Opal.def($Numeric_infinite$ques$38,"$rect",$Numeric_finite$ques$37=function(){return[this,0]},$Numeric_finite$ques$37.$$arity=0),$alias($Numeric_infinite$ques$38,"rectangular","rect"),Opal.def($Numeric_infinite$ques$38,"$round",$Numeric_finite$ques$37=function(digits){return this.$to_f().$round(digits)},$Numeric_finite$ques$37.$$arity=-1),Opal.def($Numeric_infinite$ques$38,"$step",$Numeric_step$28=function($a,$b,$c){var to,isInf=$Numeric_step$28.$$p,block=isInf||nil,self=this,counter=nil;if(isInf&&($Numeric_step$28.$$p=null),isInf&&($Numeric_step$28.$$p=null),to=Opal.slice.call(arguments,0,arguments.length),null==(isInf=Opal.extract_kwargs(to)))isInf=$hash2([],{});else if(!isInf.$$is_hash)throw Opal.ArgumentError.$new("expected kwargs");function validateParameters(){step===nil&&self.$raise($$($nesting,"TypeError"),"step must be numeric"),null!=step&&step["$=="](0)&&self.$raise($$($nesting,"ArgumentError"),"step can't be 0"),step!==nil&&null!=step||(step=1);var sign=step["$<=>"](0);sign===nil&&self.$raise($$($nesting,"ArgumentError"),"0 can't be coerced into "+step.$class()),limit!==nil&&null!=limit||(limit=0<sign?$$$($$($nesting,"Float"),"INFINITY"):$$$($$($nesting,"Float"),"INFINITY")["$-@"]()),$$($nesting,"Opal").$compare(self,limit)}function stepFloatSize(){if(0<step&&limit<self||step<0&&self<limit)return 0;if(step===1/0||step===-1/0)return 1;var err=Math.abs,floor=Math.floor,err=(err(self)+err(limit)+err(limit-self))/err(step)*$$$($$($nesting,"Float"),"EPSILON");return err===1/0||err===-1/0?0:(.5<err&&(err=.5),floor((limit-self)/step+err)+1)}if(0<to.length&&(limit=to[0],to.splice(0,1)),0<to.length&&(step=to[0],to.splice(0,1)),to=isInf.$$smap.to,isInf=isInf.$$smap.by,void 0!==limit&&void 0!==to&&self.$raise($$($nesting,"ArgumentError"),"to is given twice"),void 0!==step&&void 0!==isInf&&self.$raise($$($nesting,"ArgumentError"),"step is given twice"),void 0!==to&&(limit=to),void 0!==isInf&&(step=isInf),void 0===limit&&(limit=nil),block===nil)return $send(self,"enum_for",["step",limit,step],function(){if(validateParameters(),0===step)return 1/0;if(step%1!=0)return stepFloatSize();if(0<step&&limit<self||step<0&&self<limit)return 0;var ceil=Math.ceil,abs=Math.abs;return ceil((abs(self-limit)+1)/abs(step))}.$to_proc());validateParameters();var lhs,rhs,isDesc=step["$negative?"](),isInf=step["$=="](0)||limit===1/0&&!isDesc||limit===-1/0&&isDesc;if(self.$$is_number&&step.$$is_number&&limit.$$is_number){if(self%1!=0||!isInf&&limit%1!=0||step%1!=0){var begin=self.$to_f().valueOf(),step=step.$to_f().valueOf(),limit=limit.$to_f().valueOf(),n=stepFloatSize();if(isFinite(step))if(0===step)for(;;)block(begin);else for(var i=0;i<n;i++){var d=i*step+self;(0<=step?limit<d:d<limit)&&(d=limit),block(d)}else 0!==n&&block(begin);return self}var value=self;if(isInf)for(;;value+=step)block(value);else if(isDesc)for(;limit<=value;value+=step)block(value);else for(;value<=limit;value+=step)block(value);return self}for(counter=self;$truthy(isDesc?(rhs=limit,"number"==typeof(lhs=counter)&&"number"==typeof rhs?rhs<=lhs:lhs["$>="](rhs)):function(lhs,rhs){return"number"==typeof lhs&&"number"==typeof 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other=($truthy($$($nesting,"Array")["$==="](other))?other:$coerce_to(other,$$($nesting,"Array"),"to_ary")).$to_a(),this.concat(other)},$Array_inherited$123.$$arity=1),Opal.def($Array_pack$126,"$-",$Array_inherited$123=function(other){if(other=($truthy($$($nesting,"Array")["$==="](other))?other:$coerce_to(other,$$($nesting,"Array"),"to_ary")).$to_a(),$truthy(0===this.length))return[];if($truthy(0===other.length))return this.slice();for(var item,result=[],hash=$hash2([],{}),i=0,length=other.length;i<length;i++)$hash_put(hash,other[i],!0);for(i=0,length=this.length;i<length;i++)item=this[i],void 0===$hash_get(hash,item)&&result.push(item);return result},$Array_inherited$123.$$arity=1),Opal.def($Array_pack$126,"$<<",$Array_inherited$123=function(object){return 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i,length,a,b;if(array===other)return!0;if(!other.$$is_array)return!!$respond_to(other,"$to_ary")&&other["$=="](array);if(array.$$constructor!==Array&&(array=array.$to_a()),other.$$constructor!==Array&&(other=other.$to_a()),array.length!==other.length)return!1;for(recursed[array.$object_id()]=!0,i=0,length=array.length;i<length;i++)if(a=array[i],b=other[i],a.$$is_array){if(b.$$is_array&&b.length!==a.length)return!1;if(!recursed.hasOwnProperty(a.$object_id())&&!_eqeq(a,b))return!1}else if(!a["$=="](b))return!1;return!0}(this,other)},$Array_inherited$123.$$arity=1),Opal.def($Array_pack$126,"$[]",$Array_inherited$123=function(index,length){return index.$$is_range?function(self,to){var size=self.length,exclude=to.excl,from=$coerce_to(to.begin,Opal.Integer,"to_int"),to=$coerce_to(to.end,Opal.Integer,"to_int");return from<0&&(from+=size)<0||size<from?nil:to<0&&(to+=size)<0?[]:(exclude||(to+=1),self.slice(from,to))}(this,index):function(self,index,length){var 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old<0?this.splice.apply(this,[from,0].concat(data)):this.splice.apply(this,[from,old-from].concat(data)),value}if($truthy(void 0===extra)?length=1:(length=value,value=extra,data=$truthy($$($nesting,"Array")["$==="](value))?value.$to_a():$truthy(value["$respond_to?"]("to_ary"))?value.$to_ary().$to_a():[value]),index=$coerce_to(index,$$($nesting,"Integer"),"to_int"),length=$coerce_to(length,$$($nesting,"Integer"),"to_int"),index<0&&(old=index,(index+=size)<0&&this.$raise($$($nesting,"IndexError"),"index "+old+" too small for array; minimum "+-this.length)),length<0&&this.$raise($$($nesting,"IndexError"),"negative length ("+length+")"),size<index)for(i=size;i<index;i++)this[i]=nil;return void 0===extra?this[index]=value:this.splice.apply(this,[index,length].concat(data)),value},$Array_inherited$123.$$arity=-3),Opal.def($Array_pack$126,"$any?",$Array_any$ques$14=function(pattern){var 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$iter=$Array_bsearch_index$17.$$p,block=$iter||nil;if($iter&&($Array_bsearch_index$17.$$p=null),$iter&&($Array_bsearch_index$17.$$p=null),block===nil)return this.$enum_for("bsearch_index");for(var mid,ret,min=0,max=this.length,smaller=!1,satisfied=nil;min<max;){if(ret=this[mid=min+Math.floor((max-min)/2)],!0===(ret=$yield1(block,ret)))satisfied=mid,smaller=!0;else if(!1===ret||ret===nil)smaller=!1;else if(ret.$$is_number){if(0===ret)return mid;smaller=ret<0}else this.$raise($$($nesting,"TypeError"),"wrong argument type "+ret.$class()+" (must be numeric, true, false or nil)");smaller?max=mid:min=mid+1}return satisfied},$Array_bsearch_index$17.$$arity=0),Opal.def($Array_pack$126,"$bsearch",$Array_bsearch$18=function(){var index,$iter=$Array_bsearch$18.$$p,block=$iter||nil;return $iter&&($Array_bsearch$18.$$p=null),$iter&&($Array_bsearch$18.$$p=null),block===nil?this.$enum_for("bsearch"):null!=(index=$send(this,"bsearch_index",[],block.$to_proc()))&&index.$$is_number?this[index]:index},$Array_bsearch$18.$$arity=0),Opal.def($Array_pack$126,"$cycle",$Array_cycle$19=function(n){var $$20,i,length,$iter=$Array_cycle$19.$$p,block=$iter||nil,self=this,$ret_or_1=nil;if($iter&&($Array_cycle$19.$$p=null),$iter&&($Array_cycle$19.$$p=null),null==n&&(n=nil),block===nil)return $send(self,"enum_for",["cycle",n],(($$20=function(){var lhs,rhs=null==$$20.$$s?this:$$20.$$s;return $truthy(n["$nil?"]())?$$$($$($nesting,"Float"),"INFINITY"):(n=$$($nesting,"Opal")["$coerce_to!"](n,$$($nesting,"Integer"),"to_int"),$truthy($rb_gt(n,0))?(lhs=rhs.$enumerator_size(),rhs=n,"number"==typeof lhs&&"number"==typeof rhs?lhs*rhs:lhs["$*"](rhs)):0)}).$$s=self,$$20.$$arity=0,$$20));if($truthy($truthy($ret_or_1=self["$empty?"]())?$ret_or_1:n["$=="](0)))return nil;if(n===nil)for(;;)for(i=0,length=self.length;i<length;i++)$yield1(block,self[i]);else{if((n=$$($nesting,"Opal")["$coerce_to!"](n,$$($nesting,"Integer"),"to_int"))<=0)return self;for(;0<n;){for(i=0,length=self.length;i<length;i++)$yield1(block,self[i]);n--}}return self},$Array_cycle$19.$$arity=-1),Opal.def($Array_pack$126,"$clear",$Array_inherited$123=function(){return this.splice(0,this.length),this},$Array_inherited$123.$$arity=0),Opal.def($Array_pack$126,"$count",$Array_count$22=function(object){var $zuper_ii,$iter=$Array_count$22.$$p,block=$iter||nil,$ret_or_2=nil,$zuper=nil,$zuper_i=nil;for($iter&&($Array_count$22.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return $iter&&($Array_count$22.$$p=null),null==object&&(object=nil),$truthy($truthy($ret_or_2=object)?$ret_or_2:block)?$send2(this,$find_super(this,"count",$Array_count$22,!1,!0),"count",$zuper,$iter):this.$size()},$Array_count$22.$$arity=-1),Opal.def($Array_pack$126,"$initialize_copy",$Array_inherited$123=function(other){return this.$replace(other)},$Array_inherited$123.$$arity=1),Opal.def($Array_pack$126,"$collect",$Array_collect$24=function(){var $$25,$iter=$Array_collect$24.$$p,block=$iter||nil;if($iter&&($Array_collect$24.$$p=null),$iter&&($Array_collect$24.$$p=null),block===nil)return $send(this,"enum_for",["collect"],(($$25=function(){return(null==$$25.$$s?this:$$25.$$s).$size()}).$$s=this,$$25.$$arity=0,$$25));for(var result=[],i=0,length=this.length;i<length;i++){var value=$yield1(block,this[i]);result.push(value)}return result},$Array_collect$24.$$arity=0),Opal.def($Array_pack$126,"$collect!",$Array_collect$excl$26=function(){var $$27,$iter=$Array_collect$excl$26.$$p,block=$iter||nil;if($iter&&($Array_collect$excl$26.$$p=null),$iter&&($Array_collect$excl$26.$$p=null),block===nil)return $send(this,"enum_for",["collect!"],(($$27=function(){return(null==$$27.$$s?this:$$27.$$s).$size()}).$$s=this,$$27.$$arity=0,$$27));for(var i=0,length=this.length;i<length;i++){var value=$yield1(block,this[i]);this[i]=value}return this},$Array_collect$excl$26.$$arity=0),Opal.def($Array_pack$126,"$combination",$Array_combination$28=function(n){var $$29,num,i,length,stack,chosen,lev,done,next,$iter=$Array_combination$28.$$p,$yield=$iter||nil;if($iter&&($Array_combination$28.$$p=null),num=$$($nesting,"Opal")["$coerce_to!"](n,$$($nesting,"Integer"),"to_int"),$yield===nil)return $send(this,"enum_for",["combination",num],(($$29=function(){return binomial_coefficient((null==$$29.$$s?this:$$29.$$s).length,num)}).$$s=this,$$29.$$arity=0,$$29));if(0===num)Opal.yield1($yield,[]);else if(1===num)for(i=0,length=this.length;i<length;i++)Opal.yield1($yield,[this[i]]);else if(num===this.length)Opal.yield1($yield,this.slice());else if(0<=num&&num<this.length){for(stack=[],i=0;i<=num+1;i++)stack.push(0);for(done=!(chosen=[]),stack[lev=0]=-1;!done;){for(chosen[lev]=this[stack[lev+1]];lev<num-1;)next=stack[++lev+1]=stack[lev]+1,chosen[lev]=this[next];for(Opal.yield1($yield,chosen.slice()),lev++;done=0===lev,stack[lev]++,lev--,stack[lev+1]+num===this.length+lev+1;);}}return this},$Array_combination$28.$$arity=1),Opal.def($Array_pack$126,"$repeated_combination",$Array_repeated_combination$30=function(n){var $$31,num,$iter=$Array_repeated_combination$30.$$p,$yield=$iter||nil;return $iter&&($Array_repeated_combination$30.$$p=null),num=$$($nesting,"Opal")["$coerce_to!"](n,$$($nesting,"Integer"),"to_int"),$yield===nil?$send(this,"enum_for",["repeated_combination",num],(($$31=function(){return binomial_coefficient((null==$$31.$$s?this:$$31.$$s).length+num-1,num)}).$$s=this,$$31.$$arity=0,$$31)):(0<=num&&function iterate(max,copy,buffer,self){if(buffer.length!=max)for(var i=copy;i<self.length;i++)buffer.push(self[i]),iterate(max,i,buffer,self),buffer.pop();else copy=buffer.slice(),Opal.yield1($yield,copy)}(num,0,[],this),this)},$Array_repeated_combination$30.$$arity=1),Opal.def($Array_pack$126,"$compact",$Array_inherited$123=function(){for(var item,result=[],i=0,length=this.length;i<length;i++)(item=this[i])!==nil&&result.push(item);return result},$Array_inherited$123.$$arity=0),Opal.def($Array_pack$126,"$compact!",$Array_inherited$123=function(){for(var original=this.length,i=0,length=this.length;i<length;i++)this[i]===nil&&(this.splice(i,1),length--,i--);return this.length===original?nil:this},$Array_inherited$123.$$arity=0),Opal.def($Array_pack$126,"$concat",$Array_inherited$123=function($a){var $$35,$$36,others=Opal.slice.call(arguments,0,arguments.length);return others=$send(others,"map",[],(($$35=function(other){var self=null==$$35.$$s?this:$$35.$$s;return null==other&&(other=nil),other=($truthy($$($nesting,"Array")["$==="](other))?other:$coerce_to(other,$$($nesting,"Array"),"to_ary")).$to_a(),$truthy(other["$equal?"](self))&&(other=other.$dup()),other}).$$s=this,$$35.$$arity=1,$$35)),$send(others,"each",[],(($$36=function(other){var self=null==$$36.$$s?this:$$36.$$s;null==other&&(other=nil);for(var i=0,length=other.length;i<length;i++)self.push(other[i])}).$$s=this,$$36.$$arity=1,$$36)),this},$Array_inherited$123.$$arity=-1),Opal.def($Array_pack$126,"$delete",$Array_delete$37=function(object){var original=$Array_delete$37.$$p,$yield=original||nil;original&&($Array_delete$37.$$p=null);for(var original=this.length,i=0,length=original;i<length;i++)this[i]["$=="](object)&&(this.splice(i,1),length--,i--);return this.length===original?$yield!==nil?Opal.yieldX($yield,[]):nil:object},$Array_delete$37.$$arity=1),Opal.def($Array_pack$126,"$delete_at",$Array_inherited$123=function(index){if((index=$coerce_to(index,$$($nesting,"Integer"),"to_int"))<0&&(index+=this.length),index<0||index>=this.length)return nil;var result=this[index];return this.splice(index,1),result},$Array_inherited$123.$$arity=1),Opal.def($Array_pack$126,"$delete_if",$Array_delete_if$39=function(){var $$40,$iter=$Array_delete_if$39.$$p,block=$iter||nil;return $iter&&($Array_delete_if$39.$$p=null),$iter&&($Array_delete_if$39.$$p=null),block===nil?$send(this,"enum_for",["delete_if"],(($$40=function(){return(null==$$40.$$s?this:$$40.$$s).$size()}).$$s=this,$$40.$$arity=0,$$40)):(filterIf(this,$falsy,block),this)},$Array_delete_if$39.$$arity=0),Opal.def($Array_pack$126,"$difference",$Array_inherited$123=function($a){var $$42,$post_args=Opal.slice.call(arguments,0,arguments.length);return $send($post_args,"reduce",[this.$to_a().$dup()],(($$42=function(a,b){null==$$42.$$s||$$42.$$s;return null==a&&(a=nil),null==b&&(b=nil),$rb_minus(a,b)}).$$s=this,$$42.$$arity=2,$$42))},$Array_inherited$123.$$arity=-1),Opal.def($Array_pack$126,"$dig",$Array_inherited$123=function(idx,$a){var item=nil,idxs=Opal.slice.call(arguments,1,arguments.length);return(item=this["$[]"](idx))===nil||0===idxs.length?item:($truthy(item["$respond_to?"]("dig"))||this.$raise($$($nesting,"TypeError"),item.$class()+" does not have #dig method"),$send(item,"dig",Opal.to_a(idxs)))},$Array_inherited$123.$$arity=-2),Opal.def($Array_pack$126,"$drop",$Array_inherited$123=function(number){return number<0&&this.$raise($$($nesting,"ArgumentError")),this.slice(number)},$Array_inherited$123.$$arity=1),Opal.def($Array_pack$126,"$dup",$Array_dup$45=function(){var $zuper_ii,$iter=$Array_dup$45.$$p,$zuper=nil,$zuper_i=nil;for($iter&&($Array_dup$45.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return this.$$class===Opal.Array&&this.$$class.$allocate.$$pristine&&this.$copy_instance_variables.$$pristine&&this.$initialize_dup.$$pristine?this.slice(0):$send2(this,$find_super(this,"dup",$Array_dup$45,!1,!0),"dup",$zuper,$iter)},$Array_dup$45.$$arity=0),Opal.def($Array_pack$126,"$each",$Array_each$46=function(){var $$47,$iter=$Array_each$46.$$p,block=$iter||nil;if($iter&&($Array_each$46.$$p=null),$iter&&($Array_each$46.$$p=null),block===nil)return $send(this,"enum_for",["each"],(($$47=function(){return(null==$$47.$$s?this:$$47.$$s).$size()}).$$s=this,$$47.$$arity=0,$$47));for(var i=0,length=this.length;i<length;i++)$yield1(block,this[i]);return this},$Array_each$46.$$arity=0),Opal.def($Array_pack$126,"$each_index",$Array_each_index$48=function(){var $$49,$iter=$Array_each_index$48.$$p,block=$iter||nil;if($iter&&($Array_each_index$48.$$p=null),$iter&&($Array_each_index$48.$$p=null),block===nil)return $send(this,"enum_for",["each_index"],(($$49=function(){return(null==$$49.$$s?this:$$49.$$s).$size()}).$$s=this,$$49.$$arity=0,$$49));for(var i=0,length=this.length;i<length;i++)$yield1(block,i);return this},$Array_each_index$48.$$arity=0),Opal.def($Array_pack$126,"$empty?",$Array_inherited$123=function(){return 0===this.length},$Array_inherited$123.$$arity=0),Opal.def($Array_pack$126,"$eql?",$Array_inherited$123=function(other){var recursed={};return function _eql(array,other){var i,length,a,b;if(!other.$$is_array)return!1;if(other=other.$to_a(),array.length!==other.length)return!1;for(recursed[array.$object_id()]=!0,i=0,length=array.length;i<length;i++)if(a=array[i],b=other[i],a.$$is_array){if(b.$$is_array&&b.length!==a.length)return!1;if(!recursed.hasOwnProperty(a.$object_id())&&!_eql(a,b))return!1}else if(!a["$eql?"](b))return!1;return!0}(this,other)},$Array_inherited$123.$$arity=1),Opal.def($Array_pack$126,"$fetch",$Array_fetch$52=function(index,defaults){var original=$Array_fetch$52.$$p,block=original||nil;original&&($Array_fetch$52.$$p=null),original&&($Array_fetch$52.$$p=null);original=index;return(index=$coerce_to(index,$$($nesting,"Integer"),"to_int"))<0&&(index+=this.length),0<=index&&index<this.length?this[index]:(block!==nil&&null!=defaults&&this.$warn("warning: block supersedes default value argument"),block!==nil?block(original):null!=defaults?defaults:void(0===this.length?this.$raise($$($nesting,"IndexError"),"index "+original+" outside of array bounds: 0...0"):this.$raise($$($nesting,"IndexError"),"index "+original+" outside of array bounds: -"+this.length+"..."+this.length)))},$Array_fetch$52.$$arity=-2),Opal.def($Array_pack$126,"$fill",$Array_fill$53=function($a){var $b,$c,i,value,args=$Array_fill$53.$$p,block=args||nil,one=nil,two=nil,obj=nil,left=nil,right=nil;if(args&&($Array_fill$53.$$p=null),args&&($Array_fill$53.$$p=null),args=Opal.slice.call(arguments,0,arguments.length),two=$truthy(block)?($truthy(2<args.length)&&this.$raise($$($nesting,"ArgumentError"),"wrong number of arguments ("+args.$length()+" for 0..2)"),$c=args,one=null==($b=Opal.to_ary($c))[0]?nil:$b[0],null==$b[1]?nil:$b[1]):($truthy(0==args.length)?this.$raise($$($nesting,"ArgumentError"),"wrong number of arguments (0 for 1..3)"):$truthy(3<args.length)&&this.$raise($$($nesting,"ArgumentError"),"wrong number of arguments ("+args.$length()+" for 1..3)"),$c=args,obj=null==($b=Opal.to_ary($c))[0]?nil:$b[0],one=null==$b[1]?nil:$b[1],null==$b[2]?nil:$b[2]),$truthy($$($nesting,"Range")["$==="](one))){if($truthy(two)&&this.$raise($$($nesting,"TypeError"),"length invalid with range"),left=$coerce_to(one.begin,$$($nesting,"Integer"),"to_int"),$truthy(left<0)&&(left+=this.length),$truthy(left<0)&&this.$raise($$($nesting,"RangeError"),one.$inspect()+" out of range"),right=$coerce_to(one.end,$$($nesting,"Integer"),"to_int"),$truthy(right<0)&&(right+=this.length),$truthy(one["$exclude_end?"]())||(right+=1),$truthy(right<=left))return this}else if($truthy(one))if(left=$coerce_to(one,$$($nesting,"Integer"),"to_int"),$truthy(left<0)&&(left+=this.length),$truthy(left<0)&&(left=0),$truthy(two)){if(right=$coerce_to(two,$$($nesting,"Integer"),"to_int"),$truthy(0==right))return this;right+=left}else right=this.length;else left=0,right=this.length;if($truthy(left>this.length))for(i=this.length;i<right;i++)this[i]=nil;if($truthy(right>this.length)&&(this.length=right),$truthy(block))for(this.length;left<right;left++)value=block(left),this[left]=value;else for(this.length;left<right;left++)this[left]=obj;return this},$Array_fill$53.$$arity=-1),Opal.def($Array_pack$126,"$first",$Array_inherited$123=function(count){return null==count?0===this.length?nil:this[0]:((count=$coerce_to(count,$$($nesting,"Integer"),"to_int"))<0&&this.$raise($$($nesting,"ArgumentError"),"negative array size"),this.slice(0,count))},$Array_inherited$123.$$arity=-1),Opal.def($Array_pack$126,"$flatten",$Array_inherited$123=function(level){var self=this;return void 0!==level&&(level=$coerce_to(level,$$($nesting,"Integer"),"to_int")),function _flatten(array,level){for(var item,ary,result=[],i=0,length=(array=array.$to_a()).length;i<length;i++)if(item=array[i],$respond_to(item,"$to_ary",!0))if((ary=item.$to_ary())!==nil)switch(ary.$$is_array||self.$raise($$($nesting,"TypeError")),ary===self&&self.$raise($$($nesting,"ArgumentError")),level){case void 0:result=result.concat(_flatten(ary));break;case 0:result.push(ary);break;default:result.push.apply(result,_flatten(ary,level-1))}else result.push(item);else result.push(item);return result}(self,level)},$Array_inherited$123.$$arity=-1),Opal.def($Array_pack$126,"$flatten!",$Array_inherited$123=function(level){var flattened=this.$flatten(level);if(this.length==flattened.length){for(var i=0,length=this.length;i<length&&this[i]===flattened[i];i++);if(i==length)return nil}return this.$replace(flattened),this},$Array_inherited$123.$$arity=-1),Opal.def($Array_pack$126,"$hash",$Array_inherited$123=function(){var item,i,key,top=void 0===$hash_ids,result=["A"],hash_id=this.$object_id();try{if(top&&($hash_ids=Object.create(null)),$hash_ids[hash_id])return"self";for(key in $hash_ids)if(item=$hash_ids[key],this["$eql?"](item))return"self";for($hash_ids[hash_id]=this,i=0;i<this.length;i++)item=this[i],result.push(item.$hash());return result.join(",")}finally{top&&($hash_ids=void 0)}},$Array_inherited$123.$$arity=0),Opal.def($Array_pack$126,"$include?",$Array_inherited$123=function(member){for(var i=0,length=this.length;i<length;i++)if(this[i]["$=="](member))return!0;return!1},$Array_inherited$123.$$arity=1),Opal.def($Array_pack$126,"$index",$Array_index$59=function(object){var i,length,value,$iter=$Array_index$59.$$p,block=$iter||nil;if($iter&&($Array_index$59.$$p=null),$iter&&($Array_index$59.$$p=null),null!=object&&block!==nil&&this.$warn("warning: given block not used"),null!=object){for(i=0,length=this.length;i<length;i++)if(this[i]["$=="](object))return i}else{if(block===nil)return this.$enum_for("index");for(i=0,length=this.length;i<length;i++)if(!1!==(value=block(this[i]))&&value!==nil)return i}return nil},$Array_index$59.$$arity=-1),Opal.def($Array_pack$126,"$insert",$Array_inherited$123=function(index,$a){var objects=Opal.slice.call(arguments,1,arguments.length);if(index=$coerce_to(index,$$($nesting,"Integer"),"to_int"),0<objects.length){if(index<0&&(index+=this.length+1)<0&&this.$raise($$($nesting,"IndexError"),index+" is out of bounds"),index>this.length)for(var i=this.length;i<index;i++)this.push(nil);this.splice.apply(this,[index,0].concat(objects))}return this},$Array_inherited$123.$$arity=-2),Opal.def($Array_pack$126,"$inspect",$Array_inherited$123=function(){for(var result=[],id=this.$__id__(),i=0,length=this.length;i<length;i++){var item=this["$[]"](i);item.$__id__()===id?result.push("[...]"):result.push(item.$inspect())}return"["+result.join(", ")+"]"},$Array_inherited$123.$$arity=0),Opal.def($Array_pack$126,"$intersection",$Array_inherited$123=function($a){var $$63,$post_args=Opal.slice.call(arguments,0,arguments.length);return $send($post_args,"reduce",[this.$to_a().$dup()],(($$63=function(a,b){null==$$63.$$s||$$63.$$s;return null==a&&(a=nil),null==b&&(b=nil),a["$&"](b)}).$$s=this,$$63.$$arity=2,$$63))},$Array_inherited$123.$$arity=-1),Opal.def($Array_pack$126,"$join",$Array_inherited$123=function(sep){if(null==$gvars[","]&&($gvars[","]=nil),null==sep&&(sep=nil),$truthy(0===this.length))return"";$truthy(sep===nil)&&(sep=$gvars[","]);for(var item,tmp,result=[],i=0,length=this.length;i<length;i++)item=this[i],$respond_to(item,"$to_str")&&(tmp=item.$to_str())!==nil?result.push(tmp.$to_s()):$respond_to(item,"$to_ary")&&((tmp=item.$to_ary())===this&&this.$raise($$($nesting,"ArgumentError")),tmp!==nil)?result.push(tmp.$join(sep)):$respond_to(item,"$to_s")&&(tmp=item.$to_s())!==nil?result.push(tmp):this.$raise($$($nesting,"NoMethodError").$new(Opal.inspect(item)+" doesn't respond to #to_str, #to_ary or #to_s","to_str"));return sep===nil?result.join(""):result.join($$($nesting,"Opal")["$coerce_to!"](sep,$$($nesting,"String"),"to_str").$to_s())},$Array_inherited$123.$$arity=-1),Opal.def($Array_pack$126,"$keep_if",$Array_keep_if$65=function(){var $$66,$iter=$Array_keep_if$65.$$p,block=$iter||nil;return $iter&&($Array_keep_if$65.$$p=null),$iter&&($Array_keep_if$65.$$p=null),block===nil?$send(this,"enum_for",["keep_if"],(($$66=function(){return(null==$$66.$$s?this:$$66.$$s).$size()}).$$s=this,$$66.$$arity=0,$$66)):(filterIf(this,$truthy,block),this)},$Array_keep_if$65.$$arity=0),Opal.def($Array_pack$126,"$last",$Array_inherited$123=function(count){return null==count?0===this.length?nil:this[this.length-1]:((count=$coerce_to(count,$$($nesting,"Integer"),"to_int"))<0&&this.$raise($$($nesting,"ArgumentError"),"negative array 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$$72,perm,used,permute,output,offensive=$Array_permutation$71.$$p,block=offensive||nil,self=this;if(offensive&&($Array_permutation$71.$$p=null),offensive&&($Array_permutation$71.$$p=null),block===nil)return $send(self,"enum_for",["permutation",num],(($$72=function(){var self=null==$$72.$$s?this:$$72.$$s;return function(from,how_many){for(var count=0<=how_many?1:0;how_many;)count*=from,from--,how_many--;return count}(self.length,void 0===num?self.length:num)}).$$s=self,$$72.$$arity=0,$$72));if(num=void 0===num?self.length:$coerce_to(num,$$($nesting,"Integer"),"to_int"),!(num<0||self.length<num))if(0===num)Opal.yield1(block,[]);else if(1===num)for(var i=0;i<self.length;i++)Opal.yield1(block,[self[i]]);else perm=$$($nesting,"Array").$new(num),used=$$($nesting,"Array").$new(self.length,!1),permute=function(num,perm,index,used,blk){self=this;for(var i=0;i<self.length;i++)if(used["$[]"](i)["$!"]())if(perm[index]=i,index<num-1)used[i]=!0,permute.call(self,num,perm,index+1,used,blk),used[i]=!1;else{output=[];for(var j=0;j<perm.length;j++)output.push(self[perm[j]]);$yield1(blk,output)}},block!==nil?(offensive=self.slice(),permute.call(offensive,num,perm,0,used,block)):permute.call(self,num,perm,0,used,block);return self},$Array_permutation$71.$$arity=-1),Opal.def($Array_pack$126,"$repeated_permutation",$Array_repeated_permutation$73=function(n){var $$74,num,$iter=$Array_repeated_permutation$73.$$p,$yield=$iter||nil;return $iter&&($Array_repeated_permutation$73.$$p=null),num=$$($nesting,"Opal")["$coerce_to!"](n,$$($nesting,"Integer"),"to_int"),$yield===nil?$send(this,"enum_for",["repeated_permutation",num],(($$74=function(){var lhs,rhs,self=null==$$74.$$s?this:$$74.$$s;return $truthy((rhs=0,"number"==typeof(lhs=num)&&"number"==typeof rhs?rhs<=lhs:lhs["$>="](rhs)))?self.$size()["$**"](num):0}).$$s=this,$$74.$$arity=0,$$74)):(function iterate(max,buffer,self){if(buffer.length!=max)for(var i=0;i<self.length;i++)buffer.push(self[i]),iterate(max,buffer,self),buffer.pop();else{var copy=buffer.slice();Opal.yield1($yield,copy)}}(num,[],this.slice()),this)},$Array_repeated_permutation$73.$$arity=1),Opal.def($Array_pack$126,"$pop",$Array_inherited$123=function(count){return $truthy(void 0===count)?$truthy(0===this.length)?nil:this.pop():(count=$coerce_to(count,$$($nesting,"Integer"),"to_int"),$truthy(count<0)&&this.$raise($$($nesting,"ArgumentError"),"negative array size"),$truthy(0===this.length)?[]:$truthy(1===count)?[this.pop()]:$truthy(count>this.length)?this.splice(0,this.length):this.splice(this.length-count,this.length))},$Array_inherited$123.$$arity=-1),Opal.def($Array_pack$126,"$product",$Array_product$76=function($a){var args,$post_args=$Array_product$76.$$p,block=$post_args||nil;$post_args&&($Array_product$76.$$p=null),$post_args&&($Array_product$76.$$p=null),$post_args=Opal.slice.call(arguments,0,arguments.length);var i,m,subarray,len,result=block!==nil?null:[],n=(args=$post_args).length+1,counters=new Array(n),lengths=new Array(n),arrays=new Array(n),resultlen=1;for(arrays[0]=this,i=1;i<n;i++)arrays[i]=$coerce_to(args[i-1],$$($nesting,"Array"),"to_ary");for(i=0;i<n;i++){if(0===(len=arrays[i].length))return result||this;2147483647<(resultlen*=len)&&this.$raise($$($nesting,"RangeError"),"too big to product"),lengths[i]=len,counters[i]=0}outer_loop:for(;;){for(subarray=[],i=0;i<n;i++)subarray.push(arrays[i][counters[i]]);for(result?result.push(subarray):Opal.yield1(block,subarray),counters[m=n-1]++;counters[m]===lengths[m];){if(counters[m]=0,--m<0)break outer_loop;counters[m]++}}return result||this},$Array_product$76.$$arity=-1),Opal.def($Array_pack$126,"$push",$Array_inherited$123=function($a){for(var objects=Opal.slice.call(arguments,0,arguments.length),i=0,length=objects.length;i<length;i++)this.push(objects[i]);return this},$Array_inherited$123.$$arity=-1),$alias($Array_pack$126,"append","push"),Opal.def($Array_pack$126,"$rassoc",$Array_inherited$123=function(object){for(var item,i=0,length=this.length;i<length;i++)if(item=this[i],item.length&&void 0!==item[1]&&item[1]["$=="](object))return item;return nil},$Array_inherited$123.$$arity=1),Opal.def($Array_pack$126,"$reject",$Array_reject$79=function(){var $$80,$iter=$Array_reject$79.$$p,block=$iter||nil;if($iter&&($Array_reject$79.$$p=null),$iter&&($Array_reject$79.$$p=null),block===nil)return $send(this,"enum_for",["reject"],(($$80=function(){return(null==$$80.$$s?this:$$80.$$s).$size()}).$$s=this,$$80.$$arity=0,$$80));for(var value,result=[],i=0,length=this.length;i<length;i++)!1!==(value=block(this[i]))&&value!==nil||result.push(this[i]);return result},$Array_reject$79.$$arity=0),Opal.def($Array_pack$126,"$reject!",$Array_reject$excl$81=function(){var $$82,original,$iter=$Array_reject$excl$81.$$p,block=$iter||nil;return $iter&&($Array_reject$excl$81.$$p=null),$iter&&($Array_reject$excl$81.$$p=null),block===nil?$send(this,"enum_for",["reject!"],(($$82=function(){return(null==$$82.$$s?this:$$82.$$s).$size()}).$$s=this,$$82.$$arity=0,$$82)):(original=this.$length(),$send(this,"delete_if",[],block.$to_proc()),this.$length()["$=="](original)?nil:this)},$Array_reject$excl$81.$$arity=0),Opal.def($Array_pack$126,"$replace",$Array_inherited$123=function(other){return other=($truthy($$($nesting,"Array")["$==="](other))?other:$coerce_to(other,$$($nesting,"Array"),"to_ary")).$to_a(),this.splice(0,this.length),this.push.apply(this,other),this},$Array_inherited$123.$$arity=1),Opal.def($Array_pack$126,"$reverse",$Array_inherited$123=function(){return this.slice(0).reverse()},$Array_inherited$123.$$arity=0),Opal.def($Array_pack$126,"$reverse!",$Array_inherited$123=function(){return this.reverse()},$Array_inherited$123.$$arity=0),Opal.def($Array_pack$126,"$reverse_each",$Array_reverse_each$86=function(){var $$87,$iter=$Array_reverse_each$86.$$p,block=$iter||nil;return $iter&&($Array_reverse_each$86.$$p=null),$iter&&($Array_reverse_each$86.$$p=null),block===nil?$send(this,"enum_for",["reverse_each"],(($$87=function(){return(null==$$87.$$s?this:$$87.$$s).$size()}).$$s=this,$$87.$$arity=0,$$87)):($send(this.$reverse(),"each",[],block.$to_proc()),this)},$Array_reverse_each$86.$$arity=0),Opal.def($Array_pack$126,"$rindex",$Array_rindex$88=function(object){var i,value,$iter=$Array_rindex$88.$$p,block=$iter||nil;if($iter&&($Array_rindex$88.$$p=null),$iter&&($Array_rindex$88.$$p=null),null!=object&&block!==nil&&this.$warn("warning: given block not used"),null!=object){for(i=this.length-1;0<=i&&!(i>=this.length);i--)if(this[i]["$=="](object))return i}else if(block!==nil){for(i=this.length-1;0<=i&&!(i>=this.length);i--)if(!1!==(value=block(this[i]))&&value!==nil)return i}else if(null==object)return this.$enum_for("rindex");return nil},$Array_rindex$88.$$arity=-1),Opal.def($Array_pack$126,"$rotate",$Array_inherited$123=function(firstPart){var ary,lastPart;return null==firstPart&&(firstPart=1),firstPart=$coerce_to(firstPart,$$($nesting,"Integer"),"to_int"),1===this.length?this.slice():0===this.length?[]:(lastPart=firstPart%(ary=this.slice()).length,firstPart=ary.slice(lastPart),lastPart=ary.slice(0,lastPart),firstPart.concat(lastPart))},$Array_inherited$123.$$arity=-1),Opal.def($Array_pack$126,"$rotate!",$Array_inherited$123=function(cnt){var ary;return null==cnt&&(cnt=1),0===this.length||1===this.length?this:(cnt=$coerce_to(cnt,$$($nesting,"Integer"),"to_int"),ary=this.$rotate(cnt),this.$replace(ary))},$Array_inherited$123.$$arity=-1),function($SampleRandom_rand$92,$SampleRandom_initialize$91){var $nesting=[$SampleRandom_rand$92=$klass($SampleRandom_rand$92,null,"SampleRandom")].concat($SampleRandom_initialize$91);$SampleRandom_rand$92.$$prototype.rng=nil,Opal.def($SampleRandom_rand$92,"$initialize",$SampleRandom_initialize$91=function(rng){return this.rng=rng},$SampleRandom_initialize$91.$$arity=1),Opal.def($SampleRandom_rand$92,"$rand",$SampleRandom_rand$92=function(size){var random=$coerce_to(this.rng.$rand(size),$$($nesting,"Integer"),"to_int");return $truthy(random<0)&&this.$raise($$($nesting,"RangeError"),"random value must be >= 0"),$truthy(random<size)||this.$raise($$($nesting,"RangeError"),"random value must be less than Array size"),random},$SampleRandom_rand$92.$$arity=1)}($nesting[0],$nesting),Opal.def($Array_pack$126,"$sample",$Array_inherited$123=function(count,options){var o,abandon,spin,result,i,j,k,targetIndex,oldValue,$ret_or_3=nil,rng=nil,$ret_or_4=nil;if($truthy(void 0===count))return this.$at($$($nesting,"Kernel").$rand(this.length));if($truthy(void 0===options)?count=$truthy(o=$$($nesting,"Opal")["$coerce_to?"](count,$$($nesting,"Hash"),"to_hash"))?(options=o,nil):(options=nil,$coerce_to(count,$$($nesting,"Integer"),"to_int")):(count=$coerce_to(count,$$($nesting,"Integer"),"to_int"),options=$coerce_to(options,$$($nesting,"Hash"),"to_hash")),$truthy($truthy($ret_or_3=count)?count<0:$ret_or_3)&&this.$raise($$($nesting,"ArgumentError"),"count must be greater than 0"),$truthy(options)&&(rng=options["$[]"]("random")),rng=$truthy($truthy($ret_or_4=rng)?rng["$respond_to?"]("rand"):$ret_or_4)?$$($nesting,"SampleRandom").$new(rng):$$($nesting,"Kernel"),!$truthy(count))return this[rng.$rand(this.length)];switch(count>this.length&&(count=this.length),count){case 0:return[];case 1:return[this[rng.$rand(this.length)]];case 2:return(i=rng.$rand(this.length))===(j=rng.$rand(this.length))&&(j=0===i?i+1:i-1),[this[i],this[j]];default:if(3<this.length/count){for(abandon=!1,spin=0,i=1,(result=$$($nesting,"Array").$new(count))[0]=rng.$rand(this.length);i<count;){for(k=rng.$rand(this.length),j=0;j<i;){for(;k===result[j];){if(100<++spin){abandon=!0;break}k=rng.$rand(this.length)}if(abandon)break;j++}if(abandon)break;result[i]=k,i++}if(!abandon){for(i=0;i<count;)result[i]=this[result[i]],i++;return result}}result=this.slice();for(var c=0;c<count;c++)targetIndex=rng.$rand(this.length),oldValue=result[c],result[c]=result[targetIndex],result[targetIndex]=oldValue;return count===this.length?result:result["$[]"](0,count)}},$Array_inherited$123.$$arity=-1),Opal.def($Array_pack$126,"$select",$Array_select$94=function(){var $$95,$iter=$Array_select$94.$$p,block=$iter||nil;if($iter&&($Array_select$94.$$p=null),$iter&&($Array_select$94.$$p=null),block===nil)return $send(this,"enum_for",["select"],(($$95=function(){return(null==$$95.$$s?this:$$95.$$s).$size()}).$$s=this,$$95.$$arity=0,$$95));for(var item,value,result=[],i=0,length=this.length;i<length;i++)item=this[i],value=$yield1(block,item),$truthy(value)&&result.push(item);return result},$Array_select$94.$$arity=0),Opal.def($Array_pack$126,"$select!",$Array_select$excl$96=function(){var $$97,original=$Array_select$excl$96.$$p,block=original||nil;if(original&&($Array_select$excl$96.$$p=null),original&&($Array_select$excl$96.$$p=null),block===nil)return $send(this,"enum_for",["select!"],(($$97=function(){return(null==$$97.$$s?this:$$97.$$s).$size()}).$$s=this,$$97.$$arity=0,$$97));original=this.length;return $send(this,"keep_if",[],block.$to_proc()),this.length===original?nil:this},$Array_select$excl$96.$$arity=0),$alias($Array_pack$126,"filter","select"),$alias($Array_pack$126,"filter!","select!"),Opal.def($Array_pack$126,"$shift",$Array_inherited$123=function(count){return $truthy(void 0===count)?$truthy(0===this.length)?nil:function(list){for(var r=list[0],index=1,length=list.length;index<length;index++)list[index-1]=list[index];return list.pop(),r}(this):(count=$coerce_to(count,$$($nesting,"Integer"),"to_int"),$truthy(count<0)&&this.$raise($$($nesting,"ArgumentError"),"negative array size"),$truthy(0===this.length)?[]:this.splice(0,count))},$Array_inherited$123.$$arity=-1),$alias($Array_pack$126,"size","length"),Opal.def($Array_pack$126,"$shuffle",$Array_inherited$123=function(rng){return this.$dup().$to_a()["$shuffle!"](rng)},$Array_inherited$123.$$arity=-1),Opal.def($Array_pack$126,"$shuffle!",$Array_inherited$123=function(rng){var randgen,j,tmp,i=this.length;for(void 0!==rng&&(rng=$$($nesting,"Opal")["$coerce_to?"](rng,$$($nesting,"Hash"),"to_hash"))!==nil&&(rng=rng["$[]"]("random"))!==nil&&rng["$respond_to?"]("rand")&&(randgen=rng);i;)randgen?((j=randgen.$rand(i).$to_int())<0&&this.$raise($$($nesting,"RangeError"),"random number too small "+j),i<=j&&this.$raise($$($nesting,"RangeError"),"random number too big "+j)):j=this.$rand(i),tmp=this[--i],this[i]=this[j],this[j]=tmp;return this},$Array_inherited$123.$$arity=-1),$alias($Array_pack$126,"slice","[]"),Opal.def($Array_pack$126,"$slice!",$Array_inherited$123=function(index,length){var range,result=nil,range_start=nil,range_end=nil,start=nil;if(result=nil,$truthy(void 0===length))if($truthy($$($nesting,"Range")["$==="](index))){range=index,result=this["$[]"](range),range_start=$coerce_to(range.begin,$$($nesting,"Integer"),"to_int"),range_end=$coerce_to(range.end,$$($nesting,"Integer"),"to_int"),range_start<0&&(range_start+=this.length),range_end<0?range_end+=this.length:range_end>=this.length&&(range_end=this.length-1,range.excl&&(range_end+=1));var range_length=range_end-range_start;range.excl?--range_end:range_length+=1,range_start<this.length&&0<=range_start&&range_end<this.length&&0<=range_end&&0<range_length&&this.splice(range_start,range_length)}else{if((start=$coerce_to(index,$$($nesting,"Integer"),"to_int"))<0&&(start+=this.length),start<0||start>=this.length)return nil;result=this[start],0===start?this.shift():this.splice(start,1)}else{if(start=$coerce_to(index,$$($nesting,"Integer"),"to_int"),(length=$coerce_to(length,$$($nesting,"Integer"),"to_int"))<0)return nil;result=this["$[]"](start,length);start<0&&(start+=this.length),start+length>this.length&&(length=this.length-start),start<this.length&&0<=start&&this.splice(start,length)}return result},$Array_inherited$123.$$arity=-2),Opal.def($Array_pack$126,"$sort",$Array_sort$102=function(){var $iter=$Array_sort$102.$$p,block=$iter||nil,self=this;return $iter&&($Array_sort$102.$$p=null),$iter&&($Array_sort$102.$$p=null),$truthy(1<self.length)?(block===nil&&(block=function(a,b){return a["$<=>"](b)}),self.slice().sort(function(x,rhs){var lhs=block(x,rhs);return lhs===nil&&self.$raise($$($nesting,"ArgumentError"),"comparison of "+x.$inspect()+" with "+rhs.$inspect()+" failed"),$rb_gt(lhs,0)?1:(rhs=0,("number"==typeof(lhs=lhs)&&"number"==typeof rhs?lhs<rhs:lhs["$<"](rhs))?-1:0)})):self},$Array_sort$102.$$arity=0),Opal.def($Array_pack$126,"$sort!",$Array_sort$excl$103=function(){var result,$iter=$Array_sort$excl$103.$$p,block=$iter||nil;$iter&&($Array_sort$excl$103.$$p=null),$iter&&($Array_sort$excl$103.$$p=null),result=block!==nil?$send(this.slice(),"sort",[],block.$to_proc()):this.slice().$sort();for(var i=this.length=0,length=result.length;i<length;i++)this.push(result[i]);return this},$Array_sort$excl$103.$$arity=0),Opal.def($Array_pack$126,"$sort_by!",$Array_sort_by$excl$104=function(){var $$105,$iter=$Array_sort_by$excl$104.$$p,block=$iter||nil;return $iter&&($Array_sort_by$excl$104.$$p=null),$iter&&($Array_sort_by$excl$104.$$p=null),block===nil?$send(this,"enum_for",["sort_by!"],(($$105=function(){return(null==$$105.$$s?this:$$105.$$s).$size()}).$$s=this,$$105.$$arity=0,$$105)):this.$replace($send(this,"sort_by",[],block.$to_proc()))},$Array_sort_by$excl$104.$$arity=0),Opal.def($Array_pack$126,"$take",$Array_inherited$123=function(count){return count<0&&this.$raise($$($nesting,"ArgumentError")),this.slice(0,count)},$Array_inherited$123.$$arity=1),Opal.def($Array_pack$126,"$take_while",$Array_take_while$107=function(){var $iter=$Array_take_while$107.$$p,block=$iter||nil;$iter&&($Array_take_while$107.$$p=null),$iter&&($Array_take_while$107.$$p=null);for(var item,value,result=[],i=0,length=this.length;i<length;i++){if(!1===(value=block(item=this[i]))||value===nil)return result;result.push(item)}return result},$Array_take_while$107.$$arity=0),Opal.def($Array_pack$126,"$to_a",$Array_inherited$123=function(){return this.$$class===Opal.Array?this:Opal.Array.$new(this)},$Array_inherited$123.$$arity=0),Opal.def($Array_pack$126,"$to_ary",$Array_inherited$123=function(){return this},$Array_inherited$123.$$arity=0),Opal.def($Array_pack$126,"$to_h",$Array_to_h$110=function(){var $iter=$Array_to_h$110.$$p,block=$iter||nil,array=nil;$iter&&($Array_to_h$110.$$p=null),$iter&&($Array_to_h$110.$$p=null),array=this,block!==nil&&(array=$send(array,"map",[],block.$to_proc()));for(var key,val,len=array.length,hash=$hash2([],{}),i=0;i<len;i++)(val=$$($nesting,"Opal")["$coerce_to?"](array[i],$$($nesting,"Array"),"to_ary")).$$is_array||this.$raise($$($nesting,"TypeError"),"wrong element type "+val.$class()+" at "+i+" (expected array)"),2!==val.length&&this.$raise($$($nesting,"ArgumentError"),"wrong array length at "+i+" (expected 2, was "+val.$length()+")"),key=val[0],val=val[1],$hash_put(hash,key,val);return hash},$Array_to_h$110.$$arity=0),$alias($Array_pack$126,"to_s","inspect"),Opal.def($Array_pack$126,"$transpose",$Array_inherited$123=function(){var $$112,result=nil,max=nil;return $truthy(this["$empty?"]())?[]:(result=[],max=nil,$send(this,"each",[],(($$112=function(row){var $$113,self=null==$$112.$$s?this:$$112.$$s,$ret_or_5=nil;return null==row&&(row=nil),row=($truthy($$($nesting,"Array")["$==="](row))?row:$coerce_to(row,$$($nesting,"Array"),"to_ary")).$to_a(),max=$truthy($ret_or_5=max)?$ret_or_5:row.length,$truthy(row.length["$!="](max))&&self.$raise($$($nesting,"IndexError"),"element size differs ("+row.length+" should be "+max+")"),$send(row.length,"times",[],(($$113=function(i){null==$$113.$$s||$$113.$$s;var $ret_or_6=nil,$writer=nil;return null==i&&(i=nil),($truthy($ret_or_6=result["$[]"](i))?$ret_or_6:($writer=[i,[]],$send(result,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]))["$<<"](row.$at(i))}).$$s=self,$$113.$$arity=1,$$113))}).$$s=this,$$112.$$arity=1,$$112)),result)},$Array_inherited$123.$$arity=0),Opal.def($Array_pack$126,"$union",$Array_inherited$123=function($a){var $$115,$post_args=Opal.slice.call(arguments,0,arguments.length);return $send($post_args,"reduce",[this.$uniq()],(($$115=function(a,b){null==$$115.$$s||$$115.$$s;return null==a&&(a=nil),null==b&&(b=nil),a["$|"](b)}).$$s=this,$$115.$$arity=2,$$115))},$Array_inherited$123.$$arity=-1),Opal.def($Array_pack$126,"$uniq",$Array_uniq$116=function(){var $iter=$Array_uniq$116.$$p,block=$iter||nil;$iter&&($Array_uniq$116.$$p=null),$iter&&($Array_uniq$116.$$p=null);var i,length,item,key,hash=$hash2([],{});if(block===nil)for(i=0,length=this.length;i<length;i++)item=this[i],void 0===$hash_get(hash,item)&&$hash_put(hash,item,item);else for(i=0,length=this.length;i<length;i++)item=this[i],key=$yield1(block,item),void 0===$hash_get(hash,key)&&$hash_put(hash,key,item);return hash.$values()},$Array_uniq$116.$$arity=0),Opal.def($Array_pack$126,"$uniq!",$Array_uniq$excl$117=function(){var original_length=$Array_uniq$excl$117.$$p,block=original_length||nil;original_length&&($Array_uniq$excl$117.$$p=null),original_length&&($Array_uniq$excl$117.$$p=null);for(var item,key,original_length=this.length,hash=$hash2([],{}),i=0,length=original_length;i<length;i++)item=this[i],key=block===nil?item:$yield1(block,item),void 0!==$hash_get(hash,key)?(this.splice(i,1),length--,i--):$hash_put(hash,key,item);return this.length===original_length?nil:this},$Array_uniq$excl$117.$$arity=0),Opal.def($Array_pack$126,"$unshift",$Array_inherited$123=function($a){var objects=Opal.slice.call(arguments,0,arguments.length),selfLength=this.length,objectsLength=objects.length;if(0==objectsLength)return this;for(var index=selfLength-objectsLength,i=0;i<objectsLength;i++)this.push(this[index+i]);for(var len=selfLength-1;0<=len-objectsLength;)this[len]=this[len-objectsLength],len--;for(var j=0;j<objectsLength;j++)this[j]=objects[j];return this},$Array_inherited$123.$$arity=-1),$alias($Array_pack$126,"prepend","unshift"),Opal.def($Array_pack$126,"$values_at",$Array_inherited$123=function($a){var $$120,out=nil,$post_args=Opal.slice.call(arguments,0,arguments.length),out=[];return $send($post_args,"each",[],(($$120=function(elem){var $$121,i,self=null==$$120.$$s?this:$$120.$$s,finish=nil,start=nil;return null==elem&&(elem=nil),$truthy(elem["$is_a?"]($$($nesting,"Range")))?(finish=$coerce_to(elem.$last(),$$($nesting,"Integer"),"to_int"),(start=$coerce_to(elem.$first(),$$($nesting,"Integer"),"to_int"))<0?(start+=self.length,nil):(finish<0&&(finish+=self.length),elem["$exclude_end?"]()&&finish--,finish<start?nil:$send(start,"upto",[finish],(($$121=function(i){var self=null==$$121.$$s?this:$$121.$$s;return null==i&&(i=nil),out["$<<"](self.$at(i))}).$$s=self,$$121.$$arity=1,$$121)))):(i=$coerce_to(elem,$$($nesting,"Integer"),"to_int"),out["$<<"](self.$at(i)))}).$$s=this,$$120.$$arity=1,$$120)),out},$Array_inherited$123.$$arity=-1),Opal.def($Array_pack$126,"$zip",$Array_zip$122=function($a){var others,$iter=$Array_zip$122.$$p,block=$iter||nil,$ret_or_7=nil;$iter&&($Array_zip$122.$$p=null),$iter&&($Array_zip$122.$$p=null),others=Opal.slice.call(arguments,0,arguments.length);for(var part,o,i,result=[],size=this.length,j=0,jj=others.length;j<jj;j++)(o=others[j]).$$is_array||(o.$$is_range||o.$$is_enumerator?others[j]=o.$take(size):others[j]=($truthy($ret_or_7=$$($nesting,"Opal")["$coerce_to?"](o,$$($nesting,"Array"),"to_ary"))?$ret_or_7:$$($nesting,"Opal")["$coerce_to!"](o,$$($nesting,"Enumerator"),"to_enum","each")).$to_a());for(i=0;i<size;i++){for(part=[this[i]],j=0,jj=others.length;j<jj;j++)null==(o=others[j][i])&&(o=nil),part[j+1]=o;result[i]=part}if(block===nil)return result;for(i=0;i<size;i++)block(result[i]);return nil},$Array_zip$122.$$arity=-1),Opal.defs($Array_pack$126,"$inherited",$Array_inherited$123=function(klass){klass.$$prototype.$to_a=function(){return this.slice(0,this.length)}},$Array_inherited$123.$$arity=1),Opal.def($Array_pack$126,"$instance_variables",$Array_instance_variables$124=function(){var $$125,$zuper_ii,$iter=$Array_instance_variables$124.$$p,$zuper=nil,$zuper_i=nil;for($iter&&($Array_instance_variables$124.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return $send($send2(this,$find_super(this,"instance_variables",$Array_instance_variables$124,!1,!0),"instance_variables",$zuper,$iter),"reject",[],(($$125=function(ivar){var $ret_or_8;null==$$125.$$s||$$125.$$s;return null==ivar&&(ivar=nil),$truthy($ret_or_8=/^@\d+$/.test(ivar))?$ret_or_8:ivar["$=="]("@length")}).$$s=this,$$125.$$arity=1,$$125))},$Array_instance_variables$124.$$arity=0),$$($nesting,"Opal").$pristine($Array_pack$126.$singleton_class(),"allocate"),$$($nesting,"Opal").$pristine($Array_pack$126,"copy_instance_variables","initialize_dup"),Opal.def($Array_pack$126,"$pack",$Array_pack$126=function($a){Opal.slice.call(arguments,0,arguments.length);return this.$raise("To use Array#pack, you must first require 'corelib/array/pack'.")},$Array_pack$126.$$arity=-1),nil&&"pack"}($nesting[0],Array,$nesting)},Opal.modules["corelib/hash"]=function(Opal){function $rb_ge(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?rhs<=lhs:lhs["$>="](rhs)}function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$klass=Opal.klass,$send=Opal.send,$hash2=Opal.hash2,$truthy=Opal.truthy,$alias=Opal.alias;return Opal.add_stubs(["$require","$include","$coerce_to?","$[]","$merge!","$allocate","$raise","$coerce_to!","$each","$fetch","$>=","$>","$==","$compare_by_identity","$lambda?","$abs","$arity","$enum_for","$size","$respond_to?","$class","$dig","$except!","$dup","$delete","$new","$inspect","$map","$to_proc","$flatten","$eql?","$default","$default_proc","$default_proc=","$-","$default=","$to_h","$proc"]),self.$require("corelib/enumerable"),function($Hash_values$81,$Hash_to_proc$71){var $Hash_initialize$4,$Hash_delete$24,$Hash_delete_if$25,$Hash_each$28,$Hash_each_key$30,$Hash_each_value$32,$Hash_fetch$38,$Hash_fetch_values$39,$Hash_keep_if$49,$Hash_merge$53,$Hash_merge$excl$54,$Hash_reject$57,$Hash_reject$excl$59,$Hash_select$62,$Hash_select$excl$64,$Hash_to_h$69,$Hash_transform_keys$73,$Hash_transform_keys$excl$75,$Hash_transform_values$77,$Hash_transform_values$excl$79,inspect_ids,$Hash_values$81=$klass($Hash_values$81,null,"Hash"),$nesting=[$Hash_values$81].concat($Hash_to_proc$71);return $Hash_values$81.$include($$($nesting,"Enumerable")),$Hash_values$81.$$prototype.$$is_hash=!0,Opal.defs($Hash_values$81,"$[]",$Hash_to_proc$71=function($a){var hash,i,argv=Opal.slice.call(arguments,0,arguments.length),argc=argv.length;if(1===argc){if((hash=$$($nesting,"Opal")["$coerce_to?"](argv["$[]"](0),$$($nesting,"Hash"),"to_hash"))!==nil)return this.$allocate()["$merge!"](hash);for((argv=$$($nesting,"Opal")["$coerce_to?"](argv["$[]"](0),$$($nesting,"Array"),"to_ary"))===nil&&this.$raise($$($nesting,"ArgumentError"),"odd number of arguments for Hash"),argc=argv.length,hash=this.$allocate(),i=0;i<argc;i++)if(argv[i].$$is_array)switch(argv[i].length){case 1:hash.$store(argv[i][0],nil);break;case 2:hash.$store(argv[i][0],argv[i][1]);break;default:this.$raise($$($nesting,"ArgumentError"),"invalid number of elements ("+argv[i].length+" for 1..2)")}return hash}for(argc%2!=0&&this.$raise($$($nesting,"ArgumentError"),"odd number of arguments for Hash"),hash=this.$allocate(),i=0;i<argc;i+=2)hash.$store(argv[i],argv[i+1]);return hash},$Hash_to_proc$71.$$arity=-1),Opal.defs($Hash_values$81,"$allocate",$Hash_to_proc$71=function(){var hash=new this.$$constructor;return Opal.hash_init(hash),hash.$$none=nil,hash.$$proc=nil,hash},$Hash_to_proc$71.$$arity=0),Opal.defs($Hash_values$81,"$try_convert",$Hash_to_proc$71=function(obj){return $$($nesting,"Opal")["$coerce_to?"](obj,$$($nesting,"Hash"),"to_hash")},$Hash_to_proc$71.$$arity=1),Opal.def($Hash_values$81,"$initialize",$Hash_initialize$4=function(defaults){var $iter=$Hash_initialize$4.$$p,block=$iter||nil;return $iter&&($Hash_initialize$4.$$p=null),$iter&&($Hash_initialize$4.$$p=null),void 0!==defaults&&block!==nil&&this.$raise($$($nesting,"ArgumentError"),"wrong number of arguments (1 for 0)"),this.$$none=void 0===defaults?nil:defaults,this.$$proc=block,this},$Hash_initialize$4.$$arity=-1),Opal.def($Hash_values$81,"$==",$Hash_to_proc$71=function(other){if(this===other)return!0;if(!other.$$is_hash)return!1;if(this.$$keys.length!==other.$$keys.length)return!1;for(var value,other_value,i=0,keys=this.$$keys,length=keys.length;i<length;i++)if(void 0===(other_value=(other_value=keys[i]).$$is_string?(value=this.$$smap[other_value],other.$$smap[other_value]):(value=other_value.value,Opal.hash_get(other,other_value.key)))||!value["$eql?"](other_value))return!1;return!0},$Hash_to_proc$71.$$arity=1),Opal.def($Hash_values$81,"$>=",$Hash_to_proc$71=function(other){var $$7,result=nil;return other=$$($nesting,"Opal")["$coerce_to!"](other,$$($nesting,"Hash"),"to_hash"),!(this.$$keys.length<other.$$keys.length)&&(result=!0,$send(other,"each",[],(($$7=function(other_key,other_val){var val,self=null==$$7.$$s?this:$$7.$$s;null==other_key&&(other_key=nil),null==other_val&&(other_val=nil),null!=(val=self.$fetch(other_key,null))&&val===other_val||(result=!1)}).$$s=this,$$7.$$arity=2,$$7)),result)},$Hash_to_proc$71.$$arity=1),Opal.def($Hash_values$81,"$>",$Hash_to_proc$71=function(other){return other=$$($nesting,"Opal")["$coerce_to!"](other,$$($nesting,"Hash"),"to_hash"),!(this.$$keys.length<=other.$$keys.length)&&$rb_ge(this,other)},$Hash_to_proc$71.$$arity=1),Opal.def($Hash_values$81,"$<",$Hash_to_proc$71=function(lhs){var rhs;return lhs=$$($nesting,"Opal")["$coerce_to!"](lhs,$$($nesting,"Hash"),"to_hash"),rhs=this,"number"==typeof(lhs=lhs)&&"number"==typeof rhs?rhs<lhs:lhs["$>"](rhs)},$Hash_to_proc$71.$$arity=1),Opal.def($Hash_values$81,"$<=",$Hash_to_proc$71=function(other){return $rb_ge(other=$$($nesting,"Opal")["$coerce_to!"](other,$$($nesting,"Hash"),"to_hash"),this)},$Hash_to_proc$71.$$arity=1),Opal.def($Hash_values$81,"$[]",$Hash_to_proc$71=function(key){var value=Opal.hash_get(this,key);return void 0!==value?value:this.$default(key)},$Hash_to_proc$71.$$arity=1),Opal.def($Hash_values$81,"$[]=",$Hash_to_proc$71=function(key,value){return Opal.hash_put(this,key,value),value},$Hash_to_proc$71.$$arity=2),Opal.def($Hash_values$81,"$assoc",$Hash_to_proc$71=function(object){for(var key,i=0,keys=this.$$keys,length=keys.length;i<length;i++)if((key=keys[i]).$$is_string){if(key["$=="](object))return[key,this.$$smap[key]]}else if(key.key["$=="](object))return[key.key,key.value];return nil},$Hash_to_proc$71.$$arity=1),Opal.def($Hash_values$81,"$clear",$Hash_to_proc$71=function(){return Opal.hash_init(this),this},$Hash_to_proc$71.$$arity=0),Opal.def($Hash_values$81,"$clone",$Hash_to_proc$71=function(){var hash=new this.$$class;return Opal.hash_init(hash),Opal.hash_clone(this,hash),hash},$Hash_to_proc$71.$$arity=0),Opal.def($Hash_values$81,"$compact",$Hash_to_proc$71=function(){for(var key,value,hash=Opal.hash(),i=0,keys=this.$$keys,length=keys.length;i<length;i++)(key=keys[i]).$$is_string?value=this.$$smap[key]:(value=key.value,key=key.key),value!==nil&&Opal.hash_put(hash,key,value);return hash},$Hash_to_proc$71.$$arity=0),Opal.def($Hash_values$81,"$compact!",$Hash_to_proc$71=function(){for(var key,value,changes_were_made=!1,i=0,keys=this.$$keys,length=keys.length;i<length;i++)(key=keys[i]).$$is_string?value=this.$$smap[key]:(value=key.value,key=key.key),value===nil&&void 0!==Opal.hash_delete(this,key)&&(changes_were_made=!0,length--,i--);return changes_were_made?this:nil},$Hash_to_proc$71.$$arity=0),Opal.def($Hash_values$81,"$compare_by_identity",$Hash_to_proc$71=function(){var i,ii,key,identity_hash,keys=this.$$keys;if(this.$$by_identity)return this;if(0===this.$$keys.length)return this.$$by_identity=!0,this;for(identity_hash=$hash2([],{}).$compare_by_identity(),i=0,ii=keys.length;i<ii;i++)(key=keys[i]).$$is_string||(key=key.key),Opal.hash_put(identity_hash,key,Opal.hash_get(this,key));return this.$$by_identity=!0,this.$$map=identity_hash.$$map,this.$$smap=identity_hash.$$smap,this},$Hash_to_proc$71.$$arity=0),Opal.def($Hash_values$81,"$compare_by_identity?",$Hash_to_proc$71=function(){return!0===this.$$by_identity},$Hash_to_proc$71.$$arity=0),Opal.def($Hash_values$81,"$default",$Hash_to_proc$71=function(key){return void 0!==key&&this.$$proc!==nil&&void 0!==this.$$proc?this.$$proc.$call(this,key):void 0===this.$$none?nil:this.$$none},$Hash_to_proc$71.$$arity=-1),Opal.def($Hash_values$81,"$default=",$Hash_to_proc$71=function(object){return this.$$proc=nil,this.$$none=object},$Hash_to_proc$71.$$arity=1),Opal.def($Hash_values$81,"$default_proc",$Hash_to_proc$71=function(){return void 0!==this.$$proc?this.$$proc:nil},$Hash_to_proc$71.$$arity=0),Opal.def($Hash_values$81,"$default_proc=",$Hash_to_proc$71=function(default_proc){var proc=default_proc;return proc!==nil&&(proc=$$($nesting,"Opal")["$coerce_to!"](proc,$$($nesting,"Proc"),"to_proc"))["$lambda?"]()&&2!==proc.$arity().$abs()&&this.$raise($$($nesting,"TypeError"),"default_proc takes two arguments"),this.$$none=nil,this.$$proc=proc,default_proc},$Hash_to_proc$71.$$arity=1),Opal.def($Hash_values$81,"$delete",$Hash_delete$24=function(key){var value=$Hash_delete$24.$$p,block=value||nil;value&&($Hash_delete$24.$$p=null),value&&($Hash_delete$24.$$p=null);value=Opal.hash_delete(this,key);return void 0!==value?value:block!==nil?Opal.yield1(block,key):nil},$Hash_delete$24.$$arity=1),Opal.def($Hash_values$81,"$delete_if",$Hash_delete_if$25=function(){var $$26,$iter=$Hash_delete_if$25.$$p,block=$iter||nil;if($iter&&($Hash_delete_if$25.$$p=null),$iter&&($Hash_delete_if$25.$$p=null),!$truthy(block))return $send(this,"enum_for",["delete_if"],(($$26=function(){return(null==$$26.$$s?this:$$26.$$s).$size()}).$$s=this,$$26.$$arity=0,$$26));for(var key,value,obj,i=0,keys=this.$$keys,length=keys.length;i<length;i++)(key=keys[i]).$$is_string?value=this.$$smap[key]:(value=key.value,key=key.key),!1!==(obj=block(key,value))&&obj!==nil&&void 0!==Opal.hash_delete(this,key)&&(length--,i--);return this},$Hash_delete_if$25.$$arity=0),$alias($Hash_values$81,"dup","clone"),Opal.def($Hash_values$81,"$dig",$Hash_to_proc$71=function(key,$a){var item=nil,keys=Opal.slice.call(arguments,1,arguments.length);return(item=this["$[]"](key))===nil||0===keys.length?item:($truthy(item["$respond_to?"]("dig"))||this.$raise($$($nesting,"TypeError"),item.$class()+" does not have #dig method"),$send(item,"dig",Opal.to_a(keys)))},$Hash_to_proc$71.$$arity=-2),Opal.def($Hash_values$81,"$each",$Hash_each$28=function(){var $$29,$iter=$Hash_each$28.$$p,block=$iter||nil;if($iter&&($Hash_each$28.$$p=null),$iter&&($Hash_each$28.$$p=null),!$truthy(block))return $send(this,"enum_for",["each"],(($$29=function(){return(null==$$29.$$s?this:$$29.$$s).$size()}).$$s=this,$$29.$$arity=0,$$29));for(var key,value,i=0,keys=this.$$keys,length=keys.length;i<length;i++)(key=keys[i]).$$is_string?value=this.$$smap[key]:(value=key.value,key=key.key),Opal.yield1(block,[key,value]);return this},$Hash_each$28.$$arity=0),Opal.def($Hash_values$81,"$each_key",$Hash_each_key$30=function(){var $$31,$iter=$Hash_each_key$30.$$p,block=$iter||nil;if($iter&&($Hash_each_key$30.$$p=null),$iter&&($Hash_each_key$30.$$p=null),!$truthy(block))return $send(this,"enum_for",["each_key"],(($$31=function(){return(null==$$31.$$s?this:$$31.$$s).$size()}).$$s=this,$$31.$$arity=0,$$31));for(var key,i=0,keys=this.$$keys,length=keys.length;i<length;i++)block((key=keys[i]).$$is_string?key:key.key);return this},$Hash_each_key$30.$$arity=0),$alias($Hash_values$81,"each_pair","each"),Opal.def($Hash_values$81,"$each_value",$Hash_each_value$32=function(){var $$33,$iter=$Hash_each_value$32.$$p,block=$iter||nil;if($iter&&($Hash_each_value$32.$$p=null),$iter&&($Hash_each_value$32.$$p=null),!$truthy(block))return $send(this,"enum_for",["each_value"],(($$33=function(){return(null==$$33.$$s?this:$$33.$$s).$size()}).$$s=this,$$33.$$arity=0,$$33));for(var key,i=0,keys=this.$$keys,length=keys.length;i<length;i++)block((key=keys[i]).$$is_string?this.$$smap[key]:key.value);return this},$Hash_each_value$32.$$arity=0),Opal.def($Hash_values$81,"$empty?",$Hash_to_proc$71=function(){return 0===this.$$keys.length},$Hash_to_proc$71.$$arity=0),$alias($Hash_values$81,"eql?","=="),Opal.def($Hash_values$81,"$except",$Hash_to_proc$71=function($a){var keys=Opal.slice.call(arguments,0,arguments.length);return $send(this.$dup(),"except!",Opal.to_a(keys))},$Hash_to_proc$71.$$arity=-1),Opal.def($Hash_values$81,"$except!",$Hash_to_proc$71=function($a){var $$37,$post_args=Opal.slice.call(arguments,0,arguments.length);return $send($post_args,"each",[],(($$37=function(key){var self=null==$$37.$$s?this:$$37.$$s;return null==key&&(key=nil),self.$delete(key)}).$$s=this,$$37.$$arity=1,$$37)),this},$Hash_to_proc$71.$$arity=-1),Opal.def($Hash_values$81,"$fetch",$Hash_fetch$38=function(key,defaults){var value=$Hash_fetch$38.$$p,block=value||nil;value&&($Hash_fetch$38.$$p=null),value&&($Hash_fetch$38.$$p=null);value=Opal.hash_get(this,key);return void 0!==value?value:block!==nil?block(key):void 0!==defaults?defaults:this.$raise($$($nesting,"KeyError").$new("key not found: "+key.$inspect(),$hash2(["key","receiver"],{key:key,receiver:this})))},$Hash_fetch$38.$$arity=-2),Opal.def($Hash_values$81,"$fetch_values",$Hash_fetch_values$39=function($a){var $$40,$post_args=$Hash_fetch_values$39.$$p,block=$post_args||nil;return $post_args&&($Hash_fetch_values$39.$$p=null),$post_args&&($Hash_fetch_values$39.$$p=null),$post_args=Opal.slice.call(arguments,0,arguments.length),$send($post_args,"map",[],(($$40=function(key){var self=null==$$40.$$s?this:$$40.$$s;return null==key&&(key=nil),$send(self,"fetch",[key],block.$to_proc())}).$$s=this,$$40.$$arity=1,$$40))},$Hash_fetch_values$39.$$arity=-1),Opal.def($Hash_values$81,"$flatten",$Hash_to_proc$71=function(level){null==level&&(level=1),level=$$($nesting,"Opal")["$coerce_to!"](level,$$($nesting,"Integer"),"to_int");for(var key,value,result=[],i=0,keys=this.$$keys,length=keys.length;i<length;i++)(key=keys[i]).$$is_string?value=this.$$smap[key]:(value=key.value,key=key.key),result.push(key),value.$$is_array&&1!==level?result=result.concat(value.$flatten(level-2)):result.push(value);return result},$Hash_to_proc$71.$$arity=-1),Opal.def($Hash_values$81,"$has_key?",$Hash_to_proc$71=function(key){return void 0!==Opal.hash_get(this,key)},$Hash_to_proc$71.$$arity=1),Opal.def($Hash_values$81,"$has_value?",$Hash_to_proc$71=function(value){for(var key,i=0,keys=this.$$keys,length=keys.length;i<length;i++)if(((key=keys[i]).$$is_string?this.$$smap[key]:key.value)["$=="](value))return!0;return!1},$Hash_to_proc$71.$$arity=1),Opal.def($Hash_values$81,"$hash",$Hash_to_proc$71=function(){var key,item,top=void 0===Opal.hash_ids,hash_id=this.$object_id(),result=["Hash"];try{if(top&&(Opal.hash_ids=Object.create(null)),Opal[hash_id])return"self";for(key in Opal.hash_ids)if(item=Opal.hash_ids[key],this["$eql?"](item))return"self";Opal.hash_ids[hash_id]=this;for(var i=0,keys=this.$$keys,length=keys.length;i<length;i++)(key=keys[i]).$$is_string?result.push([key,this.$$smap[key].$hash()]):result.push([key.key_hash,key.value.$hash()]);return result.sort().join()}finally{top&&(Opal.hash_ids=void 0)}},$Hash_to_proc$71.$$arity=0),$alias($Hash_values$81,"include?","has_key?"),Opal.def($Hash_values$81,"$index",$Hash_to_proc$71=function(object){for(var key,value,i=0,keys=this.$$keys,length=keys.length;i<length;i++)if((key=keys[i]).$$is_string?value=this.$$smap[key]:(value=key.value,key=key.key),value["$=="](object))return key;return nil},$Hash_to_proc$71.$$arity=1),Opal.def($Hash_values$81,"$indexes",$Hash_to_proc$71=function($a){for(var value,args=Opal.slice.call(arguments,0,arguments.length),result=[],i=0,length=args.length;i<length;i++)value=args[i],void 0!==(value=Opal.hash_get(this,value))?result.push(value):result.push(this.$default());return result},$Hash_to_proc$71.$$arity=-1),$alias($Hash_values$81,"indices","indexes"),Opal.def($Hash_values$81,"$inspect",$Hash_to_proc$71=function(){var top=void 0===inspect_ids,hash_id=this.$object_id(),result=[];try{if(top&&(inspect_ids={}),inspect_ids.hasOwnProperty(hash_id))return"{...}";inspect_ids[hash_id]=!0;for(var key,value,i=0,keys=this.$$keys,length=keys.length;i<length;i++)(key=keys[i]).$$is_string?value=this.$$smap[key]:(value=key.value,key=key.key),result.push(key.$inspect()+"=>"+value.$inspect());return"{"+result.join(", ")+"}"}finally{top&&(inspect_ids=void 0)}},$Hash_to_proc$71.$$arity=0),Opal.def($Hash_values$81,"$invert",$Hash_to_proc$71=function(){for(var key,value,hash=Opal.hash(),i=0,keys=this.$$keys,length=keys.length;i<length;i++)(key=keys[i]).$$is_string?value=this.$$smap[key]:(value=key.value,key=key.key),Opal.hash_put(hash,value,key);return hash},$Hash_to_proc$71.$$arity=0),Opal.def($Hash_values$81,"$keep_if",$Hash_keep_if$49=function(){var $$50,$iter=$Hash_keep_if$49.$$p,block=$iter||nil;if($iter&&($Hash_keep_if$49.$$p=null),$iter&&($Hash_keep_if$49.$$p=null),!$truthy(block))return $send(this,"enum_for",["keep_if"],(($$50=function(){return(null==$$50.$$s?this:$$50.$$s).$size()}).$$s=this,$$50.$$arity=0,$$50));for(var key,value,obj,i=0,keys=this.$$keys,length=keys.length;i<length;i++)(key=keys[i]).$$is_string?value=this.$$smap[key]:(value=key.value,key=key.key),!1!==(obj=block(key,value))&&obj!==nil||void 0!==Opal.hash_delete(this,key)&&(length--,i--);return this},$Hash_keep_if$49.$$arity=0),$alias($Hash_values$81,"key","index"),$alias($Hash_values$81,"key?","has_key?"),Opal.def($Hash_values$81,"$keys",$Hash_to_proc$71=function(){for(var key,result=[],i=0,keys=this.$$keys,length=keys.length;i<length;i++)(key=keys[i]).$$is_string?result.push(key):result.push(key.key);return result},$Hash_to_proc$71.$$arity=0),Opal.def($Hash_values$81,"$length",$Hash_to_proc$71=function(){return this.$$keys.length},$Hash_to_proc$71.$$arity=0),$alias($Hash_values$81,"member?","has_key?"),Opal.def($Hash_values$81,"$merge",$Hash_merge$53=function($a){var others=$Hash_merge$53.$$p,block=others||nil;return others&&($Hash_merge$53.$$p=null),others&&($Hash_merge$53.$$p=null),others=Opal.slice.call(arguments,0,arguments.length),$send(this.$dup(),"merge!",Opal.to_a(others),block.$to_proc())},$Hash_merge$53.$$arity=-1),Opal.def($Hash_values$81,"$merge!",$Hash_merge$excl$54=function($a){var others,i,j,other,other_keys,length,key,value,other_value,$iter=$Hash_merge$excl$54.$$p,block=$iter||nil;for($iter&&($Hash_merge$excl$54.$$p=null),$iter&&($Hash_merge$excl$54.$$p=null),others=Opal.slice.call(arguments,0,arguments.length),i=0;i<others.length;++i)if(length=(other_keys=(other=$$($nesting,"Opal")["$coerce_to!"](others[i],$$($nesting,"Hash"),"to_hash")).$$keys).length,block===nil)for(j=0;j<length;j++)(key=other_keys[j]).$$is_string?other_value=other.$$smap[key]:(other_value=key.value,key=key.key),Opal.hash_put(this,key,other_value);else for(j=0;j<length;j++)(key=other_keys[j]).$$is_string?other_value=other.$$smap[key]:(other_value=key.value,key=key.key),void 0!==(value=Opal.hash_get(this,key))?Opal.hash_put(this,key,block(key,value,other_value)):Opal.hash_put(this,key,other_value);return this},$Hash_merge$excl$54.$$arity=-1),Opal.def($Hash_values$81,"$rassoc",$Hash_to_proc$71=function(object){for(var key,value,i=0,keys=this.$$keys,length=keys.length;i<length;i++)if((key=keys[i]).$$is_string?value=this.$$smap[key]:(value=key.value,key=key.key),value["$=="](object))return[key,value];return nil},$Hash_to_proc$71.$$arity=1),Opal.def($Hash_values$81,"$rehash",$Hash_to_proc$71=function(){return Opal.hash_rehash(this),this},$Hash_to_proc$71.$$arity=0),Opal.def($Hash_values$81,"$reject",$Hash_reject$57=function(){var $$58,$iter=$Hash_reject$57.$$p,block=$iter||nil;if($iter&&($Hash_reject$57.$$p=null),$iter&&($Hash_reject$57.$$p=null),!$truthy(block))return $send(this,"enum_for",["reject"],(($$58=function(){return(null==$$58.$$s?this:$$58.$$s).$size()}).$$s=this,$$58.$$arity=0,$$58));for(var key,value,obj,hash=Opal.hash(),i=0,keys=this.$$keys,length=keys.length;i<length;i++)(key=keys[i]).$$is_string?value=this.$$smap[key]:(value=key.value,key=key.key),!1!==(obj=block(key,value))&&obj!==nil||Opal.hash_put(hash,key,value);return hash},$Hash_reject$57.$$arity=0),Opal.def($Hash_values$81,"$reject!",$Hash_reject$excl$59=function(){var $$60,$iter=$Hash_reject$excl$59.$$p,block=$iter||nil;if($iter&&($Hash_reject$excl$59.$$p=null),$iter&&($Hash_reject$excl$59.$$p=null),!$truthy(block))return $send(this,"enum_for",["reject!"],(($$60=function(){return(null==$$60.$$s?this:$$60.$$s).$size()}).$$s=this,$$60.$$arity=0,$$60));for(var key,value,obj,changes_were_made=!1,i=0,keys=this.$$keys,length=keys.length;i<length;i++)(key=keys[i]).$$is_string?value=this.$$smap[key]:(value=key.value,key=key.key),!1!==(obj=block(key,value))&&obj!==nil&&void 0!==Opal.hash_delete(this,key)&&(changes_were_made=!0,length--,i--);return changes_were_made?this:nil},$Hash_reject$excl$59.$$arity=0),Opal.def($Hash_values$81,"$replace",$Hash_to_proc$71=function(other){var $writer=nil;other=$$($nesting,"Opal")["$coerce_to!"](other,$$($nesting,"Hash"),"to_hash"),Opal.hash_init(this);for(var key,other_value,i=0,other_keys=other.$$keys,length=other_keys.length;i<length;i++)(key=other_keys[i]).$$is_string?other_value=other.$$smap[key]:(other_value=key.value,key=key.key),Opal.hash_put(this,key,other_value);return $truthy(other.$default_proc())?($writer=[other.$default_proc()],$send(this,"default_proc=",Opal.to_a($writer))):($writer=[other.$default()],$send(this,"default=",Opal.to_a($writer))),$writer[$rb_minus($writer.length,1)],this},$Hash_to_proc$71.$$arity=1),Opal.def($Hash_values$81,"$select",$Hash_select$62=function(){var $$63,$iter=$Hash_select$62.$$p,block=$iter||nil;if($iter&&($Hash_select$62.$$p=null),$iter&&($Hash_select$62.$$p=null),!$truthy(block))return $send(this,"enum_for",["select"],(($$63=function(){return(null==$$63.$$s?this:$$63.$$s).$size()}).$$s=this,$$63.$$arity=0,$$63));for(var key,value,obj,hash=Opal.hash(),i=0,keys=this.$$keys,length=keys.length;i<length;i++)(key=keys[i]).$$is_string?value=this.$$smap[key]:(value=key.value,key=key.key),!1!==(obj=block(key,value))&&obj!==nil&&Opal.hash_put(hash,key,value);return hash},$Hash_select$62.$$arity=0),Opal.def($Hash_values$81,"$select!",$Hash_select$excl$64=function(){var $$65,$iter=$Hash_select$excl$64.$$p,block=$iter||nil;if($iter&&($Hash_select$excl$64.$$p=null),$iter&&($Hash_select$excl$64.$$p=null),!$truthy(block))return $send(this,"enum_for",["select!"],(($$65=function(){return(null==$$65.$$s?this:$$65.$$s).$size()}).$$s=this,$$65.$$arity=0,$$65));for(var key,value,obj,result=nil,i=0,keys=this.$$keys,length=keys.length;i<length;i++)(key=keys[i]).$$is_string?value=this.$$smap[key]:(value=key.value,key=key.key),!1!==(obj=block(key,value))&&obj!==nil||(void 0!==Opal.hash_delete(this,key)&&(length--,i--),result=this);return result},$Hash_select$excl$64.$$arity=0),$alias($Hash_values$81,"filter","select"),$alias($Hash_values$81,"filter!","select!"),Opal.def($Hash_values$81,"$shift",$Hash_to_proc$71=function(){var key=this.$$keys;return 0<key.length?[key=(key=key[0]).$$is_string?key:key.key,Opal.hash_delete(this,key)]:this.$default(nil)},$Hash_to_proc$71.$$arity=0),$alias($Hash_values$81,"size","length"),Opal.def($Hash_values$81,"$slice",$Hash_to_proc$71=function($a){for(var keys=Opal.slice.call(arguments,0,arguments.length),result=Opal.hash(),i=0,length=keys.length;i<length;i++){var key=keys[i],value=Opal.hash_get(this,key);void 0!==value&&Opal.hash_put(result,key,value)}return result},$Hash_to_proc$71.$$arity=-1),$alias($Hash_values$81,"store","[]="),Opal.def($Hash_values$81,"$to_a",$Hash_to_proc$71=function(){for(var key,value,result=[],i=0,keys=this.$$keys,length=keys.length;i<length;i++)(key=keys[i]).$$is_string?value=this.$$smap[key]:(value=key.value,key=key.key),result.push([key,value]);return result},$Hash_to_proc$71.$$arity=0),Opal.def($Hash_values$81,"$to_h",$Hash_to_h$69=function(){var $iter=$Hash_to_h$69.$$p,hash=$iter||nil;if($iter&&($Hash_to_h$69.$$p=null),$iter&&($Hash_to_h$69.$$p=null),hash!==nil)return $send(this,"map",[],hash.$to_proc()).$to_h();if(this.$$class===Opal.Hash)return this;hash=new Opal.Hash;return Opal.hash_init(hash),Opal.hash_clone(this,hash),hash},$Hash_to_h$69.$$arity=0),Opal.def($Hash_values$81,"$to_hash",$Hash_to_proc$71=function(){return this},$Hash_to_proc$71.$$arity=0),Opal.def($Hash_values$81,"$to_proc",$Hash_to_proc$71=function(){var $$72;return $send(this,"proc",[],(($$72=function(key){var self=null==$$72.$$s?this:$$72.$$s;return null==key&&self.$raise($$($nesting,"ArgumentError"),"no key 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$$76,$iter=$Hash_transform_keys$excl$75.$$p,block=$iter||nil;if($iter&&($Hash_transform_keys$excl$75.$$p=null),$iter&&($Hash_transform_keys$excl$75.$$p=null),!$truthy(block))return $send(this,"enum_for",["transform_keys!"],(($$76=function(){return(null==$$76.$$s?this:$$76.$$s).$size()}).$$s=this,$$76.$$arity=0,$$76));for(var key,value,new_key,keys=Opal.slice.call(this.$$keys),length=keys.length,i=0;i<length;i++)(key=keys[i]).$$is_string?value=this.$$smap[key]:(value=key.value,key=key.key),new_key=Opal.yield1(block,key),Opal.hash_delete(this,key),Opal.hash_put(this,new_key,value);return this},$Hash_transform_keys$excl$75.$$arity=0),Opal.def($Hash_values$81,"$transform_values",$Hash_transform_values$77=function(){var $$78,$iter=$Hash_transform_values$77.$$p,block=$iter||nil;if($iter&&($Hash_transform_values$77.$$p=null),$iter&&($Hash_transform_values$77.$$p=null),!$truthy(block))return $send(this,"enum_for",["transform_values"],(($$78=function(){return(null==$$78.$$s?this:$$78.$$s).$size()}).$$s=this,$$78.$$arity=0,$$78));for(var key,value,result=Opal.hash(),i=0,keys=this.$$keys,length=keys.length;i<length;i++)(key=keys[i]).$$is_string?value=this.$$smap[key]:(value=key.value,key=key.key),value=Opal.yield1(block,value),Opal.hash_put(result,key,value);return result},$Hash_transform_values$77.$$arity=0),Opal.def($Hash_values$81,"$transform_values!",$Hash_transform_values$excl$79=function(){var $$80,$iter=$Hash_transform_values$excl$79.$$p,block=$iter||nil;if($iter&&($Hash_transform_values$excl$79.$$p=null),$iter&&($Hash_transform_values$excl$79.$$p=null),!$truthy(block))return $send(this,"enum_for",["transform_values!"],(($$80=function(){return(null==$$80.$$s?this:$$80.$$s).$size()}).$$s=this,$$80.$$arity=0,$$80));for(var key,value,i=0,keys=this.$$keys,length=keys.length;i<length;i++)(key=keys[i]).$$is_string?value=this.$$smap[key]:(value=key.value,key=key.key),value=Opal.yield1(block,value),Opal.hash_put(this,key,value);return this},$Hash_transform_values$excl$79.$$arity=0),$alias($Hash_values$81,"update","merge!"),$alias($Hash_values$81,"value?","has_value?"),$alias($Hash_values$81,"values_at","indexes"),Opal.def($Hash_values$81,"$values",$Hash_values$81=function(){for(var key,result=[],i=0,keys=this.$$keys,length=keys.length;i<length;i++)(key=keys[i]).$$is_string?result.push(this.$$smap[key]):result.push(key.value);return result},$Hash_values$81.$$arity=0),nil&&"values"}($nesting[0],$nesting)},Opal.modules["corelib/number"]=function(Opal){function $rb_gt(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?rhs<lhs:lhs["$>"](rhs)}function $rb_lt(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs<rhs:lhs["$<"](rhs)}function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}function $rb_divide(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs/rhs:lhs["$/"](rhs)}function $rb_times(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs*rhs:lhs["$*"](rhs)}var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$klass=Opal.klass,$alias=Opal.alias,$truthy=Opal.truthy,$send2=Opal.send2,$find_super=Opal.find_super,$send=Opal.send;return Opal.add_stubs(["$require","$bridge","$raise","$name","$class","$Float","$respond_to?","$coerce_to!","$__coerced__","$===","$!","$>","$**","$new","$<","$to_f","$==","$nan?","$infinite?","$enum_for","$+","$-","$gcd","$lcm","$%","$/","$frexp","$to_i","$ldexp","$rationalize","$*","$<<","$to_r","$truncate","$-@","$size","$<=","$>="]),self.$require("corelib/numeric"),function($base,$Number_negative$ques$75,$Number_positive$ques$74){var $Number_denominator$34,$Number_downto$35,$Number_is_a$ques$43,$Number_instance_of$ques$44,$Number_numerator$49,$Number_quo$54,$Number_times$58,$Number_divmod$66,$Number_upto$67,$nesting=[$Number_negative$ques$75=$klass($base,$Number_negative$ques$75,"Number")].concat($Number_positive$ques$74);$$($nesting,"Opal").$bridge(Number,$Number_negative$ques$75),Opal.defineProperty($Number_negative$ques$75.$$prototype,"$$is_number",!0),$Number_negative$ques$75.$$is_number_class=!0,function(self,$allocate$1){var $nesting=[self].concat($allocate$1);Opal.def(self,"$allocate",$allocate$1=function(){return this.$raise($$($nesting,"TypeError"),"allocator undefined for "+this.$name())},$allocate$1.$$arity=0),Opal.udef(self,"$new")}(Opal.get_singleton_class($Number_negative$ques$75),$nesting),Opal.def($Number_negative$ques$75,"$coerce",$Number_positive$ques$74=function(other){if(other===nil)this.$raise($$($nesting,"TypeError"),"can't convert "+other.$class()+" into 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other.$$is_number?this*other:this.$__coerced__("*",other)},$Number_positive$ques$74.$$arity=1),Opal.def($Number_negative$ques$75,"$/",$Number_positive$ques$74=function(other){return other.$$is_number?this/other:this.$__coerced__("/",other)},$Number_positive$ques$74.$$arity=1),$alias($Number_negative$ques$75,"fdiv","/"),Opal.def($Number_negative$ques$75,"$%",$Number_positive$ques$74=function(other){return other.$$is_number?other==-1/0?other:0!=other?other<0||this<0?(this%other+other)%other:this%other:void this.$raise($$($nesting,"ZeroDivisionError"),"divided by 0"):this.$__coerced__("%",other)},$Number_positive$ques$74.$$arity=1),Opal.def($Number_negative$ques$75,"$&",$Number_positive$ques$74=function(other){return other.$$is_number?this&other:this.$__coerced__("&",other)},$Number_positive$ques$74.$$arity=1),Opal.def($Number_negative$ques$75,"$|",$Number_positive$ques$74=function(other){return other.$$is_number?this|other:this.$__coerced__("|",other)},$Number_positive$ques$74.$$arity=1),Opal.def($Number_negative$ques$75,"$^",$Number_positive$ques$74=function(other){return other.$$is_number?this^other:this.$__coerced__("^",other)},$Number_positive$ques$74.$$arity=1),Opal.def($Number_negative$ques$75,"$<",$Number_positive$ques$74=function(other){return other.$$is_number?this<other:this.$__coerced__("<",other)},$Number_positive$ques$74.$$arity=1),Opal.def($Number_negative$ques$75,"$<=",$Number_positive$ques$74=function(other){return other.$$is_number?this<=other:this.$__coerced__("<=",other)},$Number_positive$ques$74.$$arity=1),Opal.def($Number_negative$ques$75,"$>",$Number_positive$ques$74=function(other){return other.$$is_number?other<this:this.$__coerced__(">",other)},$Number_positive$ques$74.$$arity=1),Opal.def($Number_negative$ques$75,"$>=",$Number_positive$ques$74=function(other){return other.$$is_number?other<=this:this.$__coerced__(">=",other)},$Number_positive$ques$74.$$arity=1),Opal.def($Number_negative$ques$75,"$<=>",$Number_positive$ques$74=function(other){try{return function(self,other){return other.$$is_number?isNaN(self)||isNaN(other)?nil:other<self?1:self<other?-1:0:self.$__coerced__("<=>",other)}(this,other)}catch($err){if(!Opal.rescue($err,[$$($nesting,"ArgumentError")]))throw $err;try{return nil}finally{Opal.pop_exception()}}},$Number_positive$ques$74.$$arity=1),Opal.def($Number_negative$ques$75,"$<<",$Number_positive$ques$74=function(count){return 0<(count=$$($nesting,"Opal")["$coerce_to!"](count,$$($nesting,"Integer"),"to_int"))?this<<count:this>>-count},$Number_positive$ques$74.$$arity=1),Opal.def($Number_negative$ques$75,"$>>",$Number_positive$ques$74=function(count){return 0<(count=$$($nesting,"Opal")["$coerce_to!"](count,$$($nesting,"Integer"),"to_int"))?this>>count:this<<-count},$Number_positive$ques$74.$$arity=1),Opal.def($Number_negative$ques$75,"$[]",$Number_positive$ques$74=function(bit){return(bit=$$($nesting,"Opal")["$coerce_to!"](bit,$$($nesting,"Integer"),"to_int"))<0?0:32<=bit?this<0?1:0:this>>bit&1},$Number_positive$ques$74.$$arity=1),Opal.def($Number_negative$ques$75,"$+@",$Number_positive$ques$74=function(){return+this},$Number_positive$ques$74.$$arity=0),Opal.def($Number_negative$ques$75,"$-@",$Number_positive$ques$74=function(){return-this},$Number_positive$ques$74.$$arity=0),Opal.def($Number_negative$ques$75,"$~",$Number_positive$ques$74=function(){return~this},$Number_positive$ques$74.$$arity=0),Opal.def($Number_negative$ques$75,"$**",$Number_positive$ques$74=function(other){var self=this,$ret_or_1=nil,$ret_or_2=nil,$ret_or_3=nil;return $truthy($$($nesting,"Integer")["$==="](other))?$truthy($truthy($ret_or_1=$$($nesting,"Integer")["$==="](self)["$!"]())?$ret_or_1:$rb_gt(other,0))?Math.pow(self,other):$$($nesting,"Rational").$new(self,1)["$**"](other):$truthy($truthy($ret_or_2=$rb_lt(self,0))?$truthy($ret_or_3=$$($nesting,"Float")["$==="](other))?$ret_or_3:$$($nesting,"Rational")["$==="](other):$ret_or_2)?$$($nesting,"Complex").$new(self,0)["$**"](other.$to_f()):$truthy(null!=other.$$is_number)?Math.pow(self,other):self.$__coerced__("**",other)},$Number_positive$ques$74.$$arity=1),Opal.def($Number_negative$ques$75,"$===",$Number_positive$ques$74=function(other){return other.$$is_number?this.valueOf()===other.valueOf():!!other["$respond_to?"]("==")&&other["$=="](this)},$Number_positive$ques$74.$$arity=1),Opal.def($Number_negative$ques$75,"$==",$Number_positive$ques$74=function(other){return other.$$is_number?this.valueOf()===other.valueOf():!!other["$respond_to?"]("==")&&other["$=="](this)},$Number_positive$ques$74.$$arity=1),Opal.def($Number_negative$ques$75,"$abs",$Number_positive$ques$74=function(){return Math.abs(this)},$Number_positive$ques$74.$$arity=0),Opal.def($Number_negative$ques$75,"$abs2",$Number_positive$ques$74=function(){return Math.abs(this*this)},$Number_positive$ques$74.$$arity=0),Opal.def($Number_negative$ques$75,"$allbits?",$Number_positive$ques$74=function(mask){return(this&(mask=$$($nesting,"Opal")["$coerce_to!"](mask,$$($nesting,"Integer"),"to_int")))==mask},$Number_positive$ques$74.$$arity=1),Opal.def($Number_negative$ques$75,"$anybits?",$Number_positive$ques$74=function(mask){return 0!=(this&(mask=$$($nesting,"Opal")["$coerce_to!"](mask,$$($nesting,"Integer"),"to_int")))},$Number_positive$ques$74.$$arity=1),Opal.def($Number_negative$ques$75,"$angle",$Number_positive$ques$74=function(){return $truthy(this["$nan?"]())?this:0==this?0<1/this?0:Math.PI:this<0?Math.PI:0},$Number_positive$ques$74.$$arity=0),$alias($Number_negative$ques$75,"arg","angle"),$alias($Number_negative$ques$75,"phase","angle"),Opal.def($Number_negative$ques$75,"$bit_length",$Number_positive$ques$74=function(){if($truthy($$($nesting,"Integer")["$==="](this))||this.$raise($$($nesting,"NoMethodError").$new("undefined method `bit_length` for "+this+":Float","bit_length")),0===this||-1===this)return 0;for(var result=0,value=this<0?~this:this;0!=value;)result+=1,value>>>=1;return result},$Number_positive$ques$74.$$arity=0),Opal.def($Number_negative$ques$75,"$ceil",$Number_positive$ques$74=function(result){null==result&&(result=0);var f=this.$to_f();if(f%1==0&&0<=result)return f;result=Math.pow(10,result),result=Math.ceil(f*result)/result;return f%1==0&&(result=Math.round(result)),result},$Number_positive$ques$74.$$arity=-1),Opal.def($Number_negative$ques$75,"$chr",$Number_positive$ques$74=function(encoding){return Opal.enc(String.fromCharCode(this),encoding||"BINARY")},$Number_positive$ques$74.$$arity=-1),Opal.def($Number_negative$ques$75,"$denominator",$Number_denominator$34=function(){var $zuper_ii,$iter=$Number_denominator$34.$$p,self=this,$ret_or_4=nil,$zuper=nil,$zuper_i=nil;for($iter&&($Number_denominator$34.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return $truthy($truthy($ret_or_4=self["$nan?"]())?$ret_or_4:self["$infinite?"]())?1:$send2(self,$find_super(self,"denominator",$Number_denominator$34,!1,!0),"denominator",$zuper,$iter)},$Number_denominator$34.$$arity=0),Opal.def($Number_negative$ques$75,"$downto",$Number_downto$35=function(stop){var $$36,$iter=$Number_downto$35.$$p,block=$iter||nil;if($iter&&($Number_downto$35.$$p=null),$iter&&($Number_downto$35.$$p=null),block===nil)return $send(this,"enum_for",["downto",stop],(($$36=function(){var self=null==$$36.$$s?this:$$36.$$s;return $truthy($$($nesting,"Numeric")["$==="](stop))||self.$raise($$($nesting,"ArgumentError"),"comparison of "+self.$class()+" with "+stop.$class()+" failed"),$truthy($rb_gt(stop,self))?0:$rb_plus($rb_minus(self,stop),1)}).$$s=this,$$36.$$arity=0,$$36));stop.$$is_number||this.$raise($$($nesting,"ArgumentError"),"comparison of "+this.$class()+" with "+stop.$class()+" failed");for(var i=this;stop<=i;i--)block(i);return this},$Number_downto$35.$$arity=1),$alias($Number_negative$ques$75,"eql?","=="),Opal.def($Number_negative$ques$75,"$equal?",$Number_positive$ques$74=function(other){var $ret_or_5;return $truthy($ret_or_5=this["$=="](other))?$ret_or_5:isNaN(this)&&isNaN(other)},$Number_positive$ques$74.$$arity=1),Opal.def($Number_negative$ques$75,"$even?",$Number_positive$ques$74=function(){return this%2==0},$Number_positive$ques$74.$$arity=0),Opal.def($Number_negative$ques$75,"$floor",$Number_positive$ques$74=function(result){null==result&&(result=0);var f=this.$to_f();if(f%1==0&&0<=result)return f;result=Math.pow(10,result),result=Math.floor(f*result)/result;return f%1==0&&(result=Math.round(result)),result},$Number_positive$ques$74.$$arity=-1),Opal.def($Number_negative$ques$75,"$gcd",$Number_positive$ques$74=function(other){$truthy($$($nesting,"Integer")["$==="](other))||this.$raise($$($nesting,"TypeError"),"not an integer");for(var min=Math.abs(this),max=Math.abs(other);0<min;)var tmp=min,min=max%min,max=tmp;return max},$Number_positive$ques$74.$$arity=1),Opal.def($Number_negative$ques$75,"$gcdlcm",$Number_positive$ques$74=function(other){return[this.$gcd(other),this.$lcm(other)]},$Number_positive$ques$74.$$arity=1),Opal.def($Number_negative$ques$75,"$integer?",$Number_positive$ques$74=function(){return this%1==0},$Number_positive$ques$74.$$arity=0),Opal.def($Number_negative$ques$75,"$is_a?",$Number_is_a$ques$43=function(klass){var $zuper_ii,$iter=$Number_is_a$ques$43.$$p,self=this,$ret_or_6=nil,$ret_or_7=nil,$ret_or_8=nil,$zuper=nil,$zuper_i=nil;for($iter&&($Number_is_a$ques$43.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return!!$truthy($truthy($ret_or_6=klass["$=="]($$($nesting,"Integer")))?$$($nesting,"Integer")["$==="](self):$ret_or_6)||(!!$truthy($truthy($ret_or_7=klass["$=="]($$($nesting,"Integer")))?$$($nesting,"Integer")["$==="](self):$ret_or_7)||(!!$truthy($truthy($ret_or_8=klass["$=="]($$($nesting,"Float")))?$$($nesting,"Float")["$==="](self):$ret_or_8)||$send2(self,$find_super(self,"is_a?",$Number_is_a$ques$43,!1,!0),"is_a?",$zuper,$iter)))},$Number_is_a$ques$43.$$arity=1),$alias($Number_negative$ques$75,"kind_of?","is_a?"),Opal.def($Number_negative$ques$75,"$instance_of?",$Number_instance_of$ques$44=function(klass){var $zuper_ii,$iter=$Number_instance_of$ques$44.$$p,self=this,$ret_or_9=nil,$ret_or_10=nil,$ret_or_11=nil,$zuper=nil,$zuper_i=nil;for($iter&&($Number_instance_of$ques$44.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return!!$truthy($truthy($ret_or_9=klass["$=="]($$($nesting,"Integer")))?$$($nesting,"Integer")["$==="](self):$ret_or_9)||(!!$truthy($truthy($ret_or_10=klass["$=="]($$($nesting,"Integer")))?$$($nesting,"Integer")["$==="](self):$ret_or_10)||(!!$truthy($truthy($ret_or_11=klass["$=="]($$($nesting,"Float")))?$$($nesting,"Float")["$==="](self):$ret_or_11)||$send2(self,$find_super(self,"instance_of?",$Number_instance_of$ques$44,!1,!0),"instance_of?",$zuper,$iter)))},$Number_instance_of$ques$44.$$arity=1),Opal.def($Number_negative$ques$75,"$lcm",$Number_positive$ques$74=function(other){return $truthy($$($nesting,"Integer")["$==="](other))||this.$raise($$($nesting,"TypeError"),"not an integer"),0==this||0==other?0:Math.abs(this*other/this.$gcd(other))},$Number_positive$ques$74.$$arity=1),$alias($Number_negative$ques$75,"magnitude","abs"),$alias($Number_negative$ques$75,"modulo","%"),Opal.def($Number_negative$ques$75,"$next",$Number_positive$ques$74=function(){return this+1},$Number_positive$ques$74.$$arity=0),Opal.def($Number_negative$ques$75,"$nobits?",$Number_positive$ques$74=function(mask){return 0==(this&(mask=$$($nesting,"Opal")["$coerce_to!"](mask,$$($nesting,"Integer"),"to_int")))},$Number_positive$ques$74.$$arity=1),Opal.def($Number_negative$ques$75,"$nonzero?",$Number_positive$ques$74=function(){return 0==this?nil:this},$Number_positive$ques$74.$$arity=0),Opal.def($Number_negative$ques$75,"$numerator",$Number_numerator$49=function(){var $zuper_ii,$iter=$Number_numerator$49.$$p,self=this,$ret_or_12=nil,$zuper=nil,$zuper_i=nil;for($iter&&($Number_numerator$49.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return $truthy($truthy($ret_or_12=self["$nan?"]())?$ret_or_12:self["$infinite?"]())?self:$send2(self,$find_super(self,"numerator",$Number_numerator$49,!1,!0),"numerator",$zuper,$iter)},$Number_numerator$49.$$arity=0),Opal.def($Number_negative$ques$75,"$odd?",$Number_positive$ques$74=function(){return this%2!=0},$Number_positive$ques$74.$$arity=0),Opal.def($Number_negative$ques$75,"$ord",$Number_positive$ques$74=function(){return this},$Number_positive$ques$74.$$arity=0),Opal.def($Number_negative$ques$75,"$pow",$Number_positive$ques$74=function(b,m){return 0==this&&this.$raise($$($nesting,"ZeroDivisionError"),"divided by 0"),void 0===m?this["$**"](b):($$($nesting,"Integer")["$==="](b)||this.$raise($$($nesting,"TypeError"),"Integer#pow() 2nd argument not allowed unless a 1st argument is integer"),b<0&&this.$raise($$($nesting,"TypeError"),"Integer#pow() 1st argument cannot be negative when 2nd argument specified"),$$($nesting,"Integer")["$==="](m)||this.$raise($$($nesting,"TypeError"),"Integer#pow() 2nd argument not allowed unless all arguments are integers"),0===m&&this.$raise($$($nesting,"ZeroDivisionError"),"divided by 0"),this["$**"](b)["$%"](m))},$Number_positive$ques$74.$$arity=-2),Opal.def($Number_negative$ques$75,"$pred",$Number_positive$ques$74=function(){return this-1},$Number_positive$ques$74.$$arity=0),Opal.def($Number_negative$ques$75,"$quo",$Number_quo$54=function(other){var $zuper_ii,$iter=$Number_quo$54.$$p,$zuper=nil,$zuper_i=nil;for($iter&&($Number_quo$54.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return $truthy($$($nesting,"Integer")["$==="](this))?$send2(this,$find_super(this,"quo",$Number_quo$54,!1,!0),"quo",$zuper,$iter):$rb_divide(this,other)},$Number_quo$54.$$arity=1),Opal.def($Number_negative$ques$75,"$rationalize",$Number_positive$ques$74=function(eps){var $a,f,n;return 1<arguments.length&&this.$raise($$($nesting,"ArgumentError"),"wrong number of arguments ("+arguments.length+" for 0..1)"),$truthy($$($nesting,"Integer")["$==="](this))?$$($nesting,"Rational").$new(this,1):$truthy(this["$infinite?"]())?this.$raise($$($nesting,"FloatDomainError"),"Infinity"):$truthy(this["$nan?"]())?this.$raise($$($nesting,"FloatDomainError"),"NaN"):$truthy(null==eps)?($a=$$($nesting,"Math").$frexp(this),f=null==($a=Opal.to_ary($a))[0]?nil:$a[0],n=null==$a[1]?nil:$a[1],f=$$($nesting,"Math").$ldexp(f,$$$($$($nesting,"Float"),"MANT_DIG")).$to_i(),n=$rb_minus(n,$$$($$($nesting,"Float"),"MANT_DIG")),$$($nesting,"Rational").$new($rb_times(2,f),1["$<<"]($rb_minus(1,n))).$rationalize($$($nesting,"Rational").$new(1,1["$<<"]($rb_minus(1,n))))):this.$to_r().$rationalize(eps)},$Number_positive$ques$74.$$arity=-1),Opal.def($Number_negative$ques$75,"$remainder",$Number_positive$ques$74=function(y){return $rb_minus(this,$rb_times(y,$rb_divide(this,y).$truncate()))},$Number_positive$ques$74.$$arity=1),Opal.def($Number_negative$ques$75,"$round",$Number_positive$ques$74=function(ndigits){var exp,self=this,$ret_or_13=nil,lhs=nil,$a=nil;if($truthy($$($nesting,"Integer")["$==="](self))){if($truthy(null==ndigits))return self;if($truthy($truthy($ret_or_13=$$($nesting,"Float")["$==="](ndigits))?ndigits["$infinite?"]():$ret_or_13)&&self.$raise($$($nesting,"RangeError"),"Infinity"),ndigits=$$($nesting,"Opal")["$coerce_to!"](ndigits,$$($nesting,"Integer"),"to_int"),$truthy($rb_lt(ndigits,$$$($$($nesting,"Integer"),"MIN")))&&self.$raise($$($nesting,"RangeError"),"out of bounds"),$truthy(0<=ndigits))return self;if(.415241*(ndigits=ndigits["$-@"]())-.125>self.$size())return 0;var rhs=Math.pow(10,ndigits),rhs=Math.floor((Math.abs(self)+rhs/2)/rhs)*rhs;return self<0?-rhs:rhs}if($truthy($truthy(lhs=self["$nan?"]())?null==ndigits:lhs)&&self.$raise($$($nesting,"FloatDomainError"),"NaN"),ndigits=$$($nesting,"Opal")["$coerce_to!"](ndigits||0,$$($nesting,"Integer"),"to_int"),$truthy((rhs=0,"number"==typeof(lhs=ndigits)&&"number"==typeof rhs?lhs<=rhs:lhs["$<="](rhs))))$truthy(self["$nan?"]())?self.$raise($$($nesting,"RangeError"),"NaN"):$truthy(self["$infinite?"]())&&self.$raise($$($nesting,"FloatDomainError"),"Infinity");else{if(ndigits["$=="](0))return Math.round(self);if($truthy($truthy($a=self["$nan?"]())?$a:self["$infinite?"]()))return self}return $a=$$($nesting,"Math").$frexp(self),null==($a=Opal.to_ary($a))[0]||$a[0],exp=null==$a[1]?nil:$a[1],$truthy(function(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?rhs<=lhs:lhs["$>="](rhs)}(ndigits,$rb_minus($rb_plus($$$($$($nesting,"Float"),"DIG"),2),$truthy($rb_gt(exp,0))?$rb_divide(exp,4):$rb_minus($rb_divide(exp,3),1))))?self:$truthy($rb_lt(ndigits,($truthy($rb_gt(exp,0))?$rb_plus($rb_divide(exp,3),1):$rb_divide(exp,4))["$-@"]()))?0:Math.round(self*Math.pow(10,ndigits))/Math.pow(10,ndigits)},$Number_positive$ques$74.$$arity=-1),$alias($Number_negative$ques$75,"succ","next"),Opal.def($Number_negative$ques$75,"$times",$Number_times$58=function(){var $$59,$iter=$Number_times$58.$$p,block=$iter||nil;if($iter&&($Number_times$58.$$p=null),$iter&&($Number_times$58.$$p=null),!$truthy(block))return $send(this,"enum_for",["times"],(($$59=function(){return null==$$59.$$s?this:$$59.$$s}).$$s=this,$$59.$$arity=0,$$59));for(var i=0;i<this;i++)block(i);return this},$Number_times$58.$$arity=0),Opal.def($Number_negative$ques$75,"$to_f",$Number_positive$ques$74=function(){return this},$Number_positive$ques$74.$$arity=0),Opal.def($Number_negative$ques$75,"$to_i",$Number_positive$ques$74=function(){return this<0?Math.ceil(this):Math.floor(this)},$Number_positive$ques$74.$$arity=0),$alias($Number_negative$ques$75,"to_int","to_i"),Opal.def($Number_negative$ques$75,"$to_r",$Number_positive$ques$74=function(){var $a,f,e;return $truthy($$($nesting,"Integer")["$==="](this))?$$($nesting,"Rational").$new(this,1):($a=$$($nesting,"Math").$frexp(this),f=null==($a=Opal.to_ary($a))[0]?nil:$a[0],e=null==$a[1]?nil:$a[1],f=$$($nesting,"Math").$ldexp(f,$$$($$($nesting,"Float"),"MANT_DIG")).$to_i(),e=$rb_minus(e,$$$($$($nesting,"Float"),"MANT_DIG")),$rb_times(f,$$$($$($nesting,"Float"),"RADIX")["$**"](e)).$to_r())},$Number_positive$ques$74.$$arity=0),Opal.def($Number_negative$ques$75,"$to_s",$Number_positive$ques$74=function(base){var $ret_or_16=nil;return null==base&&(base=10),base=$$($nesting,"Opal")["$coerce_to!"](base,$$($nesting,"Integer"),"to_int"),$truthy($truthy($ret_or_16=$rb_lt(base,2))?$ret_or_16:$rb_gt(base,36))&&this.$raise($$($nesting,"ArgumentError"),"invalid radix "+base),this.toString(base)},$Number_positive$ques$74.$$arity=-1),Opal.def($Number_negative$ques$75,"$truncate",$Number_positive$ques$74=function(result){null==result&&(result=0);var f=this.$to_f();if(f%1==0&&0<=result)return f;result=Math.pow(10,result),result=parseInt(f*result,10)/result;return f%1==0&&(result=Math.round(result)),result},$Number_positive$ques$74.$$arity=-1),$alias($Number_negative$ques$75,"inspect","to_s"),Opal.def($Number_negative$ques$75,"$digits",$Number_positive$ques$74=function(base){null==base&&(base=10),$rb_lt(this,0)&&this.$raise($$$($$($nesting,"Math"),"DomainError"),"out of domain"),base=$$($nesting,"Opal")["$coerce_to!"](base,$$($nesting,"Integer"),"to_int"),$truthy($rb_lt(base,2))&&this.$raise($$($nesting,"ArgumentError"),"invalid radix "+base);for(var value=this,result=[];0!==value;)result.push(value%base),value=parseInt(value/base,10);return result},$Number_positive$ques$74.$$arity=-1),Opal.def($Number_negative$ques$75,"$divmod",$Number_divmod$66=function(other){var $zuper_ii,$iter=$Number_divmod$66.$$p,self=this,$ret_or_17=nil,$zuper=nil,$zuper_i=nil;for($iter&&($Number_divmod$66.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return $truthy($truthy($ret_or_17=self["$nan?"]())?$ret_or_17:other["$nan?"]())?self.$raise($$($nesting,"FloatDomainError"),"NaN"):$truthy(self["$infinite?"]())?self.$raise($$($nesting,"FloatDomainError"),"Infinity"):$send2(self,$find_super(self,"divmod",$Number_divmod$66,!1,!0),"divmod",$zuper,$iter)},$Number_divmod$66.$$arity=1),Opal.def($Number_negative$ques$75,"$upto",$Number_upto$67=function(stop){var $$68,$iter=$Number_upto$67.$$p,block=$iter||nil;if($iter&&($Number_upto$67.$$p=null),$iter&&($Number_upto$67.$$p=null),block===nil)return $send(this,"enum_for",["upto",stop],(($$68=function(){var self=null==$$68.$$s?this:$$68.$$s;return $truthy($$($nesting,"Numeric")["$==="](stop))||self.$raise($$($nesting,"ArgumentError"),"comparison of "+self.$class()+" with "+stop.$class()+" failed"),$truthy($rb_lt(stop,self))?0:$rb_plus($rb_minus(stop,self),1)}).$$s=this,$$68.$$arity=0,$$68));stop.$$is_number||this.$raise($$($nesting,"ArgumentError"),"comparison of "+this.$class()+" with "+stop.$class()+" failed");for(var i=this;i<=stop;i++)block(i);return this},$Number_upto$67.$$arity=1),Opal.def($Number_negative$ques$75,"$zero?",$Number_positive$ques$74=function(){return 0==this},$Number_positive$ques$74.$$arity=0),Opal.def($Number_negative$ques$75,"$size",$Number_positive$ques$74=function(){return 4},$Number_positive$ques$74.$$arity=0),Opal.def($Number_negative$ques$75,"$nan?",$Number_positive$ques$74=function(){return isNaN(this)},$Number_positive$ques$74.$$arity=0),Opal.def($Number_negative$ques$75,"$finite?",$Number_positive$ques$74=function(){return this!=1/0&&this!=-1/0&&!isNaN(this)},$Number_positive$ques$74.$$arity=0),Opal.def($Number_negative$ques$75,"$infinite?",$Number_positive$ques$74=function(){return this==1/0?1:this==-1/0?-1:nil},$Number_positive$ques$74.$$arity=0),Opal.def($Number_negative$ques$75,"$positive?",$Number_positive$ques$74=function(){return 0!=this&&(this==1/0||0<1/this)},$Number_positive$ques$74.$$arity=0),Opal.def($Number_negative$ques$75,"$negative?",$Number_negative$ques$75=function(){return 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$truthy($truthy($ret_or_24=$truthy($ret_or_25=lhs.begin["$=="](infinity))?lhs.end["$nil?"]()["$!"]():$ret_or_25)?$ret_or_24:$truthy($ret_or_26=lhs.end["$=="](infinity["$-@"]()))?lhs.begin["$nil?"]()["$!"]():$ret_or_26)?0:$truthy(is_infinite(lhs))?infinity:$truthy($truthy(rhs=$$($nesting,"Numeric")["$==="](lhs.begin))?$$($nesting,"Numeric")["$==="](lhs.end):rhs)?(range_begin=lhs.begin,range_end=lhs.end,$truthy(lhs.excl)&&(rhs=1,range_end="number"==typeof(lhs=range_end)&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)),$truthy($rb_lt(range_end,range_begin))?0:(Math.abs(range_end-range_begin)+1).$to_i()):nil},$Range_marshal_load$22.$$arity=0),Opal.def($Range_hash$23,"$step",$Range_step$15=function(n){var $$16,$$17,$$18,$iter=$Range_step$15.$$p,$yield=$iter||nil,self=this,i=nil;function coerceStepSize(){n.$$is_number||(n=$$($nesting,"Opal")["$coerce_to!"](n,$$($nesting,"Integer"),"to_int")),n<0?self.$raise($$($nesting,"ArgumentError"),"step can't be 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self=this,$ret_or_28=nil,$ret_or_29=nil;return($truthy($ret_or_28=self.begin)?$ret_or_28:"")+($truthy(self.excl)?"...":"..")+($truthy($ret_or_29=self.end)?$ret_or_29:"")},$Range_marshal_load$22.$$arity=0),Opal.def($Range_hash$23,"$inspect",$Range_marshal_load$22=function(){var self=this,$ret_or_30=nil,$ret_or_31=nil;return($truthy($ret_or_30=self.begin)?self.begin.$inspect():$ret_or_30)+($truthy(self.excl)?"...":"..")+($truthy($ret_or_31=self.end)?self.end.$inspect():$ret_or_31)},$Range_marshal_load$22.$$arity=0),Opal.def($Range_hash$23,"$marshal_load",$Range_marshal_load$22=function(args){return this.begin=args["$[]"]("begin"),this.end=args["$[]"]("end"),this.excl=args["$[]"]("excl")},$Range_marshal_load$22.$$arity=1),Opal.def($Range_hash$23,"$hash",$Range_hash$23=function(){return[this.begin,this.end,this.excl].$hash()},$Range_hash$23.$$arity=0),nil&&"hash"}($nesting[0],$nesting)},Opal.modules["corelib/proc"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$slice=Opal.slice,$klass=Opal.klass,$truthy=Opal.truthy,$alias=Opal.alias,$send=Opal.send;return Opal.add_stubs(["$raise","$proc","$call","$to_proc","$coerce_to!"]),function($base,self,$Proc_dup$14){var $Proc_new$1,$Proc_call$2,$Proc_$gt$gt$3,$Proc_$lt$lt$5,self=$klass($base,self,"Proc"),$nesting=[self].concat($Proc_dup$14);return Opal.defineProperty(self.$$prototype,"$$is_proc",!0),Opal.defineProperty(self.$$prototype,"$$is_lambda",!1),Opal.defs(self,"$new",$Proc_new$1=function(){var $iter=$Proc_new$1.$$p,block=$iter||nil;return $iter&&($Proc_new$1.$$p=null),$iter&&($Proc_new$1.$$p=null),$truthy(block)||this.$raise($$($nesting,"ArgumentError"),"tried to create a Proc object without a block"),block},$Proc_new$1.$$arity=0),Opal.def(self,"$call",$Proc_call$2=function($a){var 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this.$$is_curried?-1:this.$$arity},$Proc_dup$14.$$arity=0),Opal.def(self,"$source_location",$Proc_dup$14=function(){return this.$$is_curried,nil},$Proc_dup$14.$$arity=0),Opal.def(self,"$binding",$Proc_dup$14=function(){return this.$$is_curried&&this.$raise($$($nesting,"ArgumentError"),"Can't create Binding"),nil},$Proc_dup$14.$$arity=0),Opal.def(self,"$parameters",$Proc_dup$14=function(){if(this.$$is_curried)return[["rest"]];if(this.$$parameters){if(this.$$is_lambda)return this.$$parameters;for(var result=[],i=0,length=this.$$parameters.length;i<length;i++){var parameter=this.$$parameters[i];"req"===parameter[0]&&(parameter=["opt",parameter[1]]),result.push(parameter)}return result}return[]},$Proc_dup$14.$$arity=0),Opal.def(self,"$curry",$Proc_dup$14=function(arity){var self=this;function curried(){var args=$slice.call(arguments),result=args.length;return arity<result&&self.$$is_lambda&&!self.$$is_curried&&self.$raise($$($nesting,"ArgumentError"),"wrong number of arguments ("+result+" 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$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$klass=Opal.klass,$truthy=Opal.truthy,$alias=Opal.alias;return Opal.add_stubs(["$attr_reader","$arity","$>>","$<<","$new","$class","$join","$source_location","$raise"]),function($Method_inspect$11,$Method_to_proc$10){var $Method_call$6,$nesting=[$Method_inspect$11=$klass($Method_inspect$11,null,"Method")].concat($Method_to_proc$10);$Method_inspect$11.$$prototype.method=$Method_inspect$11.$$prototype.receiver=$Method_inspect$11.$$prototype.owner=$Method_inspect$11.$$prototype.name=nil,$Method_inspect$11.$attr_reader("owner","receiver","name"),Opal.def($Method_inspect$11,"$initialize",$Method_to_proc$10=function(receiver,owner,method,name){return this.receiver=receiver,this.owner=owner,this.name=name,this.method=method},$Method_to_proc$10.$$arity=4),Opal.def($Method_inspect$11,"$arity",$Method_to_proc$10=function(){return this.method.$arity()},$Method_to_proc$10.$$arity=0),Opal.def($Method_inspect$11,"$parameters",$Method_to_proc$10=function(){return this.method.$$parameters},$Method_to_proc$10.$$arity=0),Opal.def($Method_inspect$11,"$source_location",$Method_to_proc$10=function(){var $ret_or_1;return $truthy($ret_or_1=this.method.$$source_location)?$ret_or_1:["(eval)",0]},$Method_to_proc$10.$$arity=0),Opal.def($Method_inspect$11,"$comments",$Method_to_proc$10=function(){var $ret_or_2;return $truthy($ret_or_2=this.method.$$comments)?$ret_or_2:[]},$Method_to_proc$10.$$arity=0),Opal.def($Method_inspect$11,"$call",$Method_call$6=function($a){var args=$Method_call$6.$$p,block=args||nil;return args&&($Method_call$6.$$p=null),args&&($Method_call$6.$$p=null),args=Opal.slice.call(arguments,0,arguments.length),this.method.$$p=block,this.method.apply(this.receiver,args)},$Method_call$6.$$arity=-1),$alias($Method_inspect$11,"[]","call"),Opal.def($Method_inspect$11,"$>>",$Method_to_proc$10=function(other){return this.method["$>>"](other)},$Method_to_proc$10.$$arity=1),Opal.def($Method_inspect$11,"$<<",$Method_to_proc$10=function(other){return this.method["$<<"](other)},$Method_to_proc$10.$$arity=1),Opal.def($Method_inspect$11,"$unbind",$Method_to_proc$10=function(){return $$($nesting,"UnboundMethod").$new(this.receiver.$class(),this.owner,this.method,this.name)},$Method_to_proc$10.$$arity=0),Opal.def($Method_inspect$11,"$to_proc",$Method_to_proc$10=function(){var proc=this.$call.bind(this);return proc.$$unbound=this.method,proc.$$is_lambda=!0,proc.$$arity=this.method.$$arity,proc.$$parameters=this.method.$$parameters,proc},$Method_to_proc$10.$$arity=0),Opal.def($Method_inspect$11,"$inspect",$Method_inspect$11=function(){return"#<"+this.$class()+": "+this.receiver.$class()+"#"+this.name+" (defined in "+this.owner+" in "+this.$source_location().$join(":")+")>"},$Method_inspect$11.$$arity=0)}($nesting[0],$nesting),function($UnboundMethod_inspect$18,$UnboundMethod_bind$17){var $UnboundMethod_inspect$18=$klass($UnboundMethod_inspect$18,null,"UnboundMethod"),$nesting=[$UnboundMethod_inspect$18].concat($UnboundMethod_bind$17);return $UnboundMethod_inspect$18.$$prototype.method=$UnboundMethod_inspect$18.$$prototype.owner=$UnboundMethod_inspect$18.$$prototype.name=$UnboundMethod_inspect$18.$$prototype.source=nil,$UnboundMethod_inspect$18.$attr_reader("source","owner","name"),Opal.def($UnboundMethod_inspect$18,"$initialize",$UnboundMethod_bind$17=function(source,owner,method,name){return this.source=source,this.owner=owner,this.method=method,this.name=name},$UnboundMethod_bind$17.$$arity=4),Opal.def($UnboundMethod_inspect$18,"$arity",$UnboundMethod_bind$17=function(){return this.method.$arity()},$UnboundMethod_bind$17.$$arity=0),Opal.def($UnboundMethod_inspect$18,"$parameters",$UnboundMethod_bind$17=function(){return this.method.$$parameters},$UnboundMethod_bind$17.$$arity=0),Opal.def($UnboundMethod_inspect$18,"$source_location",$UnboundMethod_bind$17=function(){var $ret_or_3;return $truthy($ret_or_3=this.method.$$source_location)?$ret_or_3:["(eval)",0]},$UnboundMethod_bind$17.$$arity=0),Opal.def($UnboundMethod_inspect$18,"$comments",$UnboundMethod_bind$17=function(){var $ret_or_4;return $truthy($ret_or_4=this.method.$$comments)?$ret_or_4:[]},$UnboundMethod_bind$17.$$arity=0),Opal.def($UnboundMethod_inspect$18,"$bind",$UnboundMethod_bind$17=function(object){if(this.owner.$$is_module||Opal.is_a(object,this.owner))return $$($nesting,"Method").$new(object,this.owner,this.method,this.name);this.$raise($$($nesting,"TypeError"),"can't bind singleton method to a different class (expected "+object+".kind_of?("+this.owner+" to be true)")},$UnboundMethod_bind$17.$$arity=1),Opal.def($UnboundMethod_inspect$18,"$inspect",$UnboundMethod_inspect$18=function(){return"#<"+this.$class()+": "+this.source+"#"+this.name+" (defined in "+this.owner+" in "+this.$source_location().$join(":")+")>"},$UnboundMethod_inspect$18.$$arity=0),nil&&"inspect"}($nesting[0],$nesting)},Opal.modules["corelib/variables"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$gvars=Opal.gvars,$hash2=Opal.hash2;return Opal.add_stubs(["$new"]),$gvars["&"]=$gvars["~"]=$gvars["`"]=$gvars["'"]=nil,$gvars.LOADED_FEATURES=$gvars['"']=Opal.loaded_features,$gvars.LOAD_PATH=$gvars[":"]=[],$gvars["/"]="\n",$gvars[","]=nil,Opal.const_set($nesting[0],"ARGV",[]),Opal.const_set($nesting[0],"ARGF",$$($nesting,"Object").$new()),Opal.const_set($nesting[0],"ENV",$hash2([],{})),$gvars.VERBOSE=!1,$gvars.DEBUG=!1,$gvars.SAFE=0},Opal.modules["corelib/io"]=function(Opal){function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}Opal.top;var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$klass=Opal.klass,$module=Opal.module,$gvars=Opal.gvars,$send=Opal.send;Opal.add_stubs(["$attr_accessor","$size","$write","$String","$chomp","$getbyte","$getc","$raise","$new","$write_proc=","$-","$extend"]),function($nesting,$Writable_print$6){var $Writable_puts$7,$nesting=[$Writable_puts$7=$klass($nesting,null,"IO")].concat($Writable_print$6);$Writable_puts$7.$$prototype.closed=nil,Opal.const_set($nesting[0],"SEEK_SET",0),Opal.const_set($nesting[0],"SEEK_CUR",1),Opal.const_set($nesting[0],"SEEK_END",2),Opal.def($Writable_puts$7,"$tty?",$Writable_print$6=function(){return 1==this.tty},$Writable_print$6.$$arity=0),Opal.def($Writable_puts$7,"$closed?",$Writable_print$6=function(){return this.closed},$Writable_print$6.$$arity=0),$Writable_puts$7.$attr_accessor("write_proc"),Opal.def($Writable_puts$7,"$write",$Writable_print$6=function(string){return 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i=0,ii=(args=Opal.slice.call(arguments,0,arguments.length)).length;i<ii;i++)args[i]=this.$String(args[i]).$chomp();return this.$write(args.concat([nil]).join($gvars["/"])),nil},$Writable_puts$7.$$arity=-1),function($Readable_readpartial$11,$Readable_readline$10){var $nesting=[$Readable_readpartial$11=$module($Readable_readpartial$11,"Readable")].concat($Readable_readline$10);Opal.def($Readable_readpartial$11,"$readbyte",$Readable_readline$10=function(){return this.$getbyte()},$Readable_readline$10.$$arity=0),Opal.def($Readable_readpartial$11,"$readchar",$Readable_readline$10=function(){return this.$getc()},$Readable_readline$10.$$arity=0),Opal.def($Readable_readpartial$11,"$readline",$Readable_readline$10=function(sep){return null==$gvars["/"]&&($gvars["/"]=nil),null==sep&&(sep=$gvars["/"]),this.$raise($$($nesting,"NotImplementedError"))},$Readable_readline$10.$$arity=-1),Opal.def($Readable_readpartial$11,"$readpartial",$Readable_readpartial$11=function(integer,outbuf){return null==outbuf&&(outbuf=nil),this.$raise($$($nesting,"NotImplementedError"))},$Readable_readpartial$11.$$arity=-2)}($nesting[0],$nesting)}($nesting[0],$nesting),Opal.const_set($nesting[0],"STDERR",$gvars.stderr=$$($nesting,"IO").$new()),Opal.const_set($nesting[0],"STDIN",$gvars.stdin=$$($nesting,"IO").$new()),Opal.const_set($nesting[0],"STDOUT",$gvars.stdout=$$($nesting,"IO").$new());var console=Opal.global.console,$writer=["object"==typeof process&&"object"==typeof process.stdout?function(s){process.stdout.write(s)}:function(s){console.log(s)}];return $send($$($nesting,"STDOUT"),"write_proc=",Opal.to_a($writer)),$rb_minus($writer.length,1),$writer=["object"==typeof process&&"object"==typeof process.stderr?function(s){process.stderr.write(s)}:function(s){console.warn(s)}],$send($$($nesting,"STDERR"),"write_proc=",Opal.to_a($writer)),$rb_minus($writer.length,1),$$($nesting,"STDOUT").$extend($$$($$($nesting,"IO"),"Writable")),$$($nesting,"STDERR").$extend($$$($$($nesting,"IO"),"Writable"))},Opal.modules["opal/regexp_anchors"]=function(Opal){Opal.top;var $nesting=[],$$=(Opal.nil,Opal.$$$,Opal.$$),$module=Opal.module;return Opal.add_stubs(["$new"]),function($base,$nesting){$nesting=[$module($base,"Opal")].concat($nesting);return Opal.const_set($nesting[0],"REGEXP_START","^"),Opal.const_set($nesting[0],"REGEXP_END","$"),Opal.const_set($nesting[0],"FORBIDDEN_STARTING_IDENTIFIER_CHARS","\\u0001-\\u002F\\u003A-\\u0040\\u005B-\\u005E\\u0060\\u007B-\\u007F"),Opal.const_set($nesting[0],"FORBIDDEN_ENDING_IDENTIFIER_CHARS","\\u0001-\\u0020\\u0022-\\u002F\\u003A-\\u003E\\u0040\\u005B-\\u005E\\u0060\\u007B-\\u007F"),Opal.const_set($nesting[0],"INLINE_IDENTIFIER_REGEXP",$$($nesting,"Regexp").$new("[^"+$$($nesting,"FORBIDDEN_STARTING_IDENTIFIER_CHARS")+"]*[^"+$$($nesting,"FORBIDDEN_ENDING_IDENTIFIER_CHARS")+"]")),Opal.const_set($nesting[0],"FORBIDDEN_CONST_NAME_CHARS","\\u0001-\\u0020\\u0021-\\u002F\\u003B-\\u003F\\u0040\\u005B-\\u005E\\u0060\\u007B-\\u007F"),Opal.const_set($nesting[0],"CONST_NAME_REGEXP",$$($nesting,"Regexp").$new($$($nesting,"REGEXP_START")+"(::)?[A-Z][^"+$$($nesting,"FORBIDDEN_CONST_NAME_CHARS")+"]*"+$$($nesting,"REGEXP_END")))}($nesting[0],$nesting)},Opal.modules["opal/mini"]=function(Opal){var self=Opal.top;Opal.nil,Opal.$$$,Opal.$$;return Opal.add_stubs(["$require"]),self.$require("opal/base"),self.$require("corelib/nil"),self.$require("corelib/boolean"),self.$require("corelib/string"),self.$require("corelib/comparable"),self.$require("corelib/enumerable"),self.$require("corelib/enumerator"),self.$require("corelib/array"),self.$require("corelib/hash"),self.$require("corelib/number"),self.$require("corelib/range"),self.$require("corelib/proc"),self.$require("corelib/method"),self.$require("corelib/regexp"),self.$require("corelib/variables"),self.$require("corelib/io"),self.$require("opal/regexp_anchors")},Opal.modules["corelib/kernel/format"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$coerce_to=Opal.coerce_to,$module=Opal.module,$truthy=Opal.truthy,$gvars=Opal.gvars,$alias=Opal.alias;return Opal.add_stubs(["$==","$length","$respond_to?","$[]","$coerce_to?","$nil?","$to_a","$raise","$to_int","$fetch","$Integer","$Float","$to_ary","$to_str","$inspect","$to_s"]),function(self,$Kernel_format$1){var self=$module(self,"Kernel"),$nesting=[self].concat($Kernel_format$1);return Opal.def(self,"$format",$Kernel_format$1=function(format_string,$a){var $post_args,args,self=this,$ret_or_1=nil,ary=nil;null==$gvars.DEBUG&&($gvars.DEBUG=nil),$post_args=Opal.slice.call(arguments,1,arguments.length),$truthy($truthy($ret_or_1=(args=$post_args).$length()["$=="](1))?args["$[]"](0)["$respond_to?"]("to_ary"):$ret_or_1)&&(ary=$$($nesting,"Opal")["$coerce_to?"](args["$[]"](0),$$($nesting,"Array"),"to_ary"),$truthy(ary["$nil?"]())||(args=ary.$to_a()));var end_slice,i,arg,str,exponent,width,precision,tmp_num,hash_parameter_key,closing_brace_char,base_number,base_prefix,base_neg_zero_regex,base_neg_zero_digit,next_arg,flags,result="",begin_slice=0,len=format_string.length,seq_arg_num=1,pos_arg_num=0,FWIDTH=32,FPREC0=128;function CHECK_FOR_FLAGS(){flags&FWIDTH&&self.$raise($$($nesting,"ArgumentError"),"flag after width"),flags&FPREC0&&self.$raise($$($nesting,"ArgumentError"),"flag after precision")}function CHECK_FOR_WIDTH(){flags&FWIDTH&&self.$raise($$($nesting,"ArgumentError"),"width given twice"),flags&FPREC0&&self.$raise($$($nesting,"ArgumentError"),"width after precision")}function GET_NTH_ARG(num){return num>=args.length&&self.$raise($$($nesting,"ArgumentError"),"too few arguments"),args[num]}function GET_NEXT_ARG(){switch(pos_arg_num){case-1:self.$raise($$($nesting,"ArgumentError"),"unnumbered("+seq_arg_num+") mixed with numbered");case-2:self.$raise($$($nesting,"ArgumentError"),"unnumbered("+seq_arg_num+") mixed with named")}return GET_NTH_ARG((pos_arg_num=seq_arg_num++)-1)}function GET_POS_ARG(num){return 0<pos_arg_num&&self.$raise($$($nesting,"ArgumentError"),"numbered("+num+") after unnumbered("+pos_arg_num+")"),-2===pos_arg_num&&self.$raise($$($nesting,"ArgumentError"),"numbered("+num+") after named"),num<1&&self.$raise($$($nesting,"ArgumentError"),"invalid index - "+num+"$"),pos_arg_num=-1,GET_NTH_ARG(num-1)}function GET_ARG(){return void 0===next_arg?GET_NEXT_ARG():next_arg}function READ_NUM(label){for(var num,str="";;i++){if(i===len&&self.$raise($$($nesting,"ArgumentError"),"malformed format string - %*[0-9]"),format_string.charCodeAt(i)<48||57<format_string.charCodeAt(i))return i--,2147483647<(num=parseInt(str,10)||0)&&self.$raise($$($nesting,"ArgumentError"),label+" too big"),num;str+=format_string.charAt(i)}}function READ_NUM_AFTER_ASTER(arg){var arg=READ_NUM(arg),arg="$"===format_string.charAt(i+1)?(i++,GET_POS_ARG(arg)):GET_NEXT_ARG();return arg.$to_int()}for(i=format_string.indexOf("%");-1!==i;i=format_string.indexOf("%",i)){switch(str=void 0,precision=width=-1,next_arg=void(flags=0),end_slice=i,i++,format_string.charAt(i)){case"%":begin_slice=i;case"":case"\n":case"\0":i++;continue}format_sequence:for(;i<len;i++)switch(format_string.charAt(i)){case" ":CHECK_FOR_FLAGS(),flags|=16;continue format_sequence;case"#":CHECK_FOR_FLAGS(),flags|=1;continue format_sequence;case"+":CHECK_FOR_FLAGS(),flags|=4;continue format_sequence;case"-":CHECK_FOR_FLAGS(),flags|=2;continue format_sequence;case"0":CHECK_FOR_FLAGS(),flags|=8;continue format_sequence;case"1":case"2":case"3":case"4":case"5":case"6":case"7":case"8":case"9":if(tmp_num=READ_NUM("width"),"$"===format_string.charAt(i+1)){if(i+2===len){str="%",i++;break format_sequence}void 0!==next_arg&&self.$raise($$($nesting,"ArgumentError"),"value given twice - %"+tmp_num+"$"),next_arg=GET_POS_ARG(tmp_num),i++}else CHECK_FOR_WIDTH(),flags|=FWIDTH,width=tmp_num;continue format_sequence;case"<":case"{":for(closing_brace_char="<"===format_string.charAt(i)?">":"}",hash_parameter_key="",i++;;i++){if(i===len&&self.$raise($$($nesting,"ArgumentError"),"malformed name - unmatched parenthesis"),format_string.charAt(i)===closing_brace_char){if(0<pos_arg_num&&self.$raise($$($nesting,"ArgumentError"),"named "+hash_parameter_key+" after unnumbered("+pos_arg_num+")"),-1===pos_arg_num&&self.$raise($$($nesting,"ArgumentError"),"named "+hash_parameter_key+" after numbered"),pos_arg_num=-2,void 0!==args[0]&&args[0].$$is_hash||self.$raise($$($nesting,"ArgumentError"),"one hash required"),next_arg=args[0].$fetch(hash_parameter_key),">"==closing_brace_char)continue format_sequence;if(str=next_arg.toString(),-1!==precision&&(str=str.slice(0,precision)),2&flags)for(;str.length<width;)str+=" ";else for(;str.length<width;)str=" "+str;break format_sequence}hash_parameter_key+=format_string.charAt(i)}case"*":i++,CHECK_FOR_WIDTH(),flags|=FWIDTH,(width=READ_NUM_AFTER_ASTER("width"))<0&&(flags|=2,width=-width);continue format_sequence;case".":if(flags&FPREC0&&self.$raise($$($nesting,"ArgumentError"),"precision given twice"),flags|=64|FPREC0,precision=0,i++,"*"===format_string.charAt(i)){i++,(precision=READ_NUM_AFTER_ASTER("precision"))<0&&(flags&=-65);continue format_sequence}precision=READ_NUM("precision");continue format_sequence;case"d":case"i":case"u":if(0<=(arg=self.$Integer(GET_ARG()))){for(str=arg.toString();str.length<precision;)str="0"+str;if(2&flags)for((4&flags||16&flags)&&(str=(4&flags?"+":" ")+str);str.length<width;)str+=" ";else if(8&flags&&-1===precision){for(;str.length<width-(4&flags||16&flags?1:0);)str="0"+str;(4&flags||16&flags)&&(str=(4&flags?"+":" ")+str)}else for((4&flags||16&flags)&&(str=(4&flags?"+":" ")+str);str.length<width;)str=" "+str}else{for(str=(-arg).toString();str.length<precision;)str="0"+str;if(2&flags)for(str="-"+str;str.length<width;)str+=" ";else if(8&flags&&-1===precision){for(;str.length<width-1;)str="0"+str;str="-"+str}else for(str="-"+str;str.length<width;)str=" "+str}break format_sequence;case"b":case"B":case"o":case"x":case"X":switch(format_string.charAt(i)){case"b":case"B":base_number=2,base_prefix="0b",base_neg_zero_regex=/^1+/,base_neg_zero_digit="1";break;case"o":base_number=8,base_prefix="0",base_neg_zero_regex=/^3?7+/,base_neg_zero_digit="7";break;case"x":case"X":base_number=16,base_prefix="0x",base_neg_zero_regex=/^f+/,base_neg_zero_digit="f"}if(0<=(arg=self.$Integer(GET_ARG()))){for(str=arg.toString(base_number);str.length<precision;)str="0"+str;if(2&flags)for((4&flags||16&flags)&&(str=(4&flags?"+":" ")+str),1&flags&&0!==arg&&(str=base_prefix+str);str.length<width;)str+=" ";else if(8&flags&&-1===precision){for(;str.length<width-(4&flags||16&flags?1:0)-(1&flags&&0!==arg?base_prefix.length:0);)str="0"+str;1&flags&&0!==arg&&(str=base_prefix+str),(4&flags||16&flags)&&(str=(4&flags?"+":" ")+str)}else for(1&flags&&0!==arg&&(str=base_prefix+str),(4&flags||16&flags)&&(str=(4&flags?"+":" ")+str);str.length<width;)str=" "+str}else if(4&flags||16&flags){for(str=(-arg).toString(base_number);str.length<precision;)str="0"+str;if(2&flags)for(1&flags&&(str=base_prefix+str),str="-"+str;str.length<width;)str+=" ";else if(8&flags&&-1===precision){for(;str.length<width-1-(1&flags?2:0);)str="0"+str;1&flags&&(str=base_prefix+str),str="-"+str}else for(1&flags&&(str=base_prefix+str),str="-"+str;str.length<width;)str=" "+str}else{for(str=(arg>>>0).toString(base_number).replace(base_neg_zero_regex,base_neg_zero_digit);str.length<precision-2;)str=base_neg_zero_digit+str;if(2&flags)for(str=".."+str,1&flags&&(str=base_prefix+str);str.length<width;)str+=" ";else if(8&flags&&-1===precision){for(;str.length<width-2-(1&flags?base_prefix.length:0);)str=base_neg_zero_digit+str;str=".."+str,1&flags&&(str=base_prefix+str)}else for(str=".."+str,1&flags&&(str=base_prefix+str);str.length<width;)str=" "+str}format_string.charAt(i)===format_string.charAt(i).toUpperCase()&&(str=str.toUpperCase());break format_sequence;case"f":case"e":case"E":case"g":case"G":if(0<=(arg=self.$Float(GET_ARG()))||isNaN(arg)){if(arg===1/0)str="Inf";else switch(format_string.charAt(i)){case"f":str=arg.toFixed(-1===precision?6:precision);break;case"e":case"E":str=arg.toExponential(-1===precision?6:precision);break;case"g":case"G":str=arg.toExponential(),(exponent=parseInt(str.split("e")[1],10))<-4||(-1===precision?6:precision)<=exponent||(str=arg.toPrecision(-1===precision?1&flags?6:void 0:precision))}if(2&flags)for((4&flags||16&flags)&&(str=(4&flags?"+":" ")+str);str.length<width;)str+=" ";else if(8&flags&&arg!==1/0&&!isNaN(arg)){for(;str.length<width-(4&flags||16&flags?1:0);)str="0"+str;(4&flags||16&flags)&&(str=(4&flags?"+":" ")+str)}else for((4&flags||16&flags)&&(str=(4&flags?"+":" ")+str);str.length<width;)str=" "+str}else{if(arg===-1/0)str="Inf";else switch(format_string.charAt(i)){case"f":str=(-arg).toFixed(-1===precision?6:precision);break;case"e":case"E":str=(-arg).toExponential(-1===precision?6:precision);break;case"g":case"G":str=(-arg).toExponential(),(exponent=parseInt(str.split("e")[1],10))<-4||(-1===precision?6:precision)<=exponent||(str=(-arg).toPrecision(-1===precision?1&flags?6:void 0:precision))}if(2&flags)for(str="-"+str;str.length<width;)str+=" ";else if(8&flags&&arg!==-1/0){for(;str.length<width-1;)str="0"+str;str="-"+str}else for(str="-"+str;str.length<width;)str=" "+str}format_string.charAt(i)!==format_string.charAt(i).toUpperCase()||arg===1/0||arg===-1/0||isNaN(arg)||(str=str.toUpperCase()),str=str.replace(/([eE][-+]?)([0-9])$/,"$10$2");break format_sequence;case"a":case"A":self.$raise($$($nesting,"NotImplementedError"),"`A` and `a` format field types are not implemented in Opal yet");case"c":if((arg=GET_ARG())["$respond_to?"]("to_ary")&&(arg=arg.$to_ary()[0]),1!==(str=arg["$respond_to?"]("to_str")?arg.$to_str():String.fromCharCode($coerce_to(arg,$$($nesting,"Integer"),"to_int"))).length&&self.$raise($$($nesting,"ArgumentError"),"%c requires a character"),2&flags)for(;str.length<width;)str+=" ";else for(;str.length<width;)str=" "+str;break format_sequence;case"p":if(str=GET_ARG().$inspect(),-1!==precision&&(str=str.slice(0,precision)),2&flags)for(;str.length<width;)str+=" ";else for(;str.length<width;)str=" "+str;break format_sequence;case"s":if(str=GET_ARG().$to_s(),-1!==precision&&(str=str.slice(0,precision)),2&flags)for(;str.length<width;)str+=" ";else for(;str.length<width;)str=" "+str;break format_sequence;default:self.$raise($$($nesting,"ArgumentError"),"malformed format string - %"+format_string.charAt(i))}void 0===str&&self.$raise($$($nesting,"ArgumentError"),"malformed format string - %"),result+=format_string.slice(begin_slice,end_slice)+str,begin_slice=i+1}return $gvars.DEBUG&&0<=pos_arg_num&&seq_arg_num<args.length&&self.$raise($$($nesting,"ArgumentError"),"too many arguments for format string"),result+format_string.slice(begin_slice)},$Kernel_format$1.$$arity=-2),$alias(self,"sprintf","format")}($nesting[0],$nesting)},Opal.modules["corelib/string/encoding"]=function(Opal){var $$14,$$17,$$20,$$22,$$25,$$27,$writer,lhs,rhs,self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$klass=Opal.klass,$hash2=Opal.hash2,$truthy=Opal.truthy,$send=Opal.send,$alias=Opal.alias;return Opal.add_stubs(["$require","$+","$[]","$clone","$initialize","$new","$instance_eval","$to_proc","$each","$const_set","$tr","$==","$default_external","$attr_accessor","$singleton_class","$attr_reader","$raise","$register","$length","$bytes","$force_encoding","$dup","$bytesize","$enum_for","$each_byte","$to_a","$each_char","$each_codepoint","$coerce_to!","$find","$<","$default_external=","$-"]),self.$require("corelib/string"),function($Encoding_bytesize$13,$Encoding_each_byte$12){var $Encoding_register$1,$Encoding_each_char$11,$nesting=[$Encoding_bytesize$13=$klass($Encoding_bytesize$13,null,"Encoding")].concat($Encoding_each_byte$12);$Encoding_bytesize$13.$$prototype.ascii=$Encoding_bytesize$13.$$prototype.dummy=$Encoding_bytesize$13.$$prototype.name=nil,Opal.defs($Encoding_bytesize$13,"$register",$Encoding_register$1=function(name,options){var $$2,ascii,dummy,lhs=$Encoding_register$1.$$p,block=lhs||nil,names=nil,rhs=nil,$ret_or_2=nil,$ret_or_3=nil,encoding=nil,register=nil;return lhs&&($Encoding_register$1.$$p=null),lhs&&($Encoding_register$1.$$p=null),null==options&&(options=$hash2([],{})),lhs=[name],rhs=$truthy(rhs=options["$[]"]("aliases"))?rhs:[],names="number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs),ascii=!!$truthy($ret_or_2=options["$[]"]("ascii"))&&$ret_or_2,dummy=!!$truthy($ret_or_3=options["$[]"]("dummy"))&&$ret_or_3,$truthy(options["$[]"]("inherits"))?(encoding=options["$[]"]("inherits").$clone()).$initialize(name,names,ascii,dummy):encoding=this.$new(name,names,ascii,dummy),block!==nil&&$send(encoding,"instance_eval",[],block.$to_proc()),register=Opal.encodings,$send(names,"each",[],(($$2=function(encoding_name){var self=null==$$2.$$s?this:$$2.$$s;return null==encoding_name&&(encoding_name=nil),self.$const_set(encoding_name.$tr("-","_"),encoding),register[encoding_name]=encoding}).$$s=this,$$2.$$arity=1,$$2))},$Encoding_register$1.$$arity=-2),Opal.defs($Encoding_bytesize$13,"$find",$Encoding_each_byte$12=function(name){return name["$=="]("default_external")?this.$default_external():Opal.find_encoding(name)},$Encoding_each_byte$12.$$arity=1),$Encoding_bytesize$13.$singleton_class().$attr_accessor("default_external"),$Encoding_bytesize$13.$attr_reader("name","names"),Opal.def($Encoding_bytesize$13,"$initialize",$Encoding_each_byte$12=function(name,names,ascii,dummy){return this.name=name,this.names=names,this.ascii=ascii,this.dummy=dummy},$Encoding_each_byte$12.$$arity=4),Opal.def($Encoding_bytesize$13,"$ascii_compatible?",$Encoding_each_byte$12=function(){return this.ascii},$Encoding_each_byte$12.$$arity=0),Opal.def($Encoding_bytesize$13,"$dummy?",$Encoding_each_byte$12=function(){return this.dummy},$Encoding_each_byte$12.$$arity=0),Opal.def($Encoding_bytesize$13,"$binary?",$Encoding_each_byte$12=function(){return!1},$Encoding_each_byte$12.$$arity=0),Opal.def($Encoding_bytesize$13,"$to_s",$Encoding_each_byte$12=function(){return this.name},$Encoding_each_byte$12.$$arity=0),Opal.def($Encoding_bytesize$13,"$inspect",$Encoding_each_byte$12=function(){var self=this;return"#<Encoding:"+self.name+($truthy(self.dummy)?" (dummy)":nil)+">"},$Encoding_each_byte$12.$$arity=0),Opal.def($Encoding_bytesize$13,"$charsize",$Encoding_each_byte$12=function(string){for(var len=0,i=0,length=string.length;i<length;i++){var charcode=string.charCodeAt(i);55296<=charcode&&charcode<=56319||len++}return len},$Encoding_each_byte$12.$$arity=1),Opal.def($Encoding_bytesize$13,"$each_char",$Encoding_each_char$11=function(string){var $iter=$Encoding_each_char$11.$$p,block=$iter||nil;$iter&&($Encoding_each_char$11.$$p=null),$iter&&($Encoding_each_char$11.$$p=null);for(var low_surrogate="",i=0,length=string.length;i<length;i++){var charcode=string.charCodeAt(i),chr=string.charAt(i);56320<=charcode&&charcode<=57343?low_surrogate=chr:(55296<=charcode&&charcode<=56319&&(chr=low_surrogate+chr),"UTF-8"!=string.encoding.name&&((chr=new String(chr)).encoding=string.encoding),Opal.yield1(block,chr))}},$Encoding_each_char$11.$$arity=1),Opal.def($Encoding_bytesize$13,"$each_byte",$Encoding_each_byte$12=function($a){Opal.slice.call(arguments,0,arguments.length);return this.$raise($$($nesting,"NotImplementedError"))},$Encoding_each_byte$12.$$arity=-1),Opal.def($Encoding_bytesize$13,"$bytesize",$Encoding_bytesize$13=function($a){Opal.slice.call(arguments,0,arguments.length);return this.$raise($$($nesting,"NotImplementedError"))},$Encoding_bytesize$13.$$arity=-1),function($base,$super,$parent_nesting){[$klass($base,$super,"EncodingError")].concat($parent_nesting)}($nesting[0],$$($nesting,"StandardError"),$nesting),function($base,$super,$parent_nesting){[$klass($base,$super,"CompatibilityError")].concat($parent_nesting)}($nesting[0],$$($nesting,"EncodingError"),$nesting)}($nesting[0],$nesting),$send($$($nesting,"Encoding"),"register",["UTF-8",$hash2(["aliases","ascii"],{aliases:["CP65001"],ascii:!0})],(($$14=function(){var $each_byte$15,$bytesize$16=null==$$14.$$s?this:$$14.$$s;return Opal.def($bytesize$16,"$each_byte",$each_byte$15=function(string){var $iter=$each_byte$15.$$p,block=$iter||nil;$iter&&($each_byte$15.$$p=null),$iter&&($each_byte$15.$$p=null);for(var codePoint,units=1/0,length=string.length,leadSurrogate=null,i=0;i<length;++i){if(55295<(codePoint=string.charCodeAt(i))&&codePoint<57344){if(!leadSurrogate){if(56319<codePoint){-1<(units-=3)&&(Opal.yield1(block,239),Opal.yield1(block,191),Opal.yield1(block,189));continue}if(i+1===length){-1<(units-=3)&&(Opal.yield1(block,239),Opal.yield1(block,191),Opal.yield1(block,189));continue}leadSurrogate=codePoint;continue}if(codePoint<56320){-1<(units-=3)&&(Opal.yield1(block,239),Opal.yield1(block,191),Opal.yield1(block,189)),leadSurrogate=codePoint;continue}codePoint=65536+(leadSurrogate-55296<<10|codePoint-56320)}else leadSurrogate&&-1<(units-=3)&&(Opal.yield1(block,239),Opal.yield1(block,191),Opal.yield1(block,189));if(leadSurrogate=null,codePoint<128){if(--units<0)break;Opal.yield1(block,codePoint)}else if(codePoint<2048){if((units-=2)<0)break;Opal.yield1(block,codePoint>>6|192),Opal.yield1(block,63&codePoint|128)}else if(codePoint<65536){if((units-=3)<0)break;Opal.yield1(block,codePoint>>12|224),Opal.yield1(block,codePoint>>6&63|128),Opal.yield1(block,63&codePoint|128)}else if(codePoint<1114112){if((units-=4)<0)break;Opal.yield1(block,codePoint>>18|240),Opal.yield1(block,codePoint>>12&63|128),Opal.yield1(block,codePoint>>6&63|128),Opal.yield1(block,63&codePoint|128)}}},$each_byte$15.$$arity=1),Opal.def($bytesize$16,"$bytesize",$bytesize$16=function(string){return string.$bytes().$length()},$bytesize$16.$$arity=1),nil&&"bytesize"}).$$s=self,$$14.$$arity=0,$$14)),$send($$($nesting,"Encoding"),"register",["UTF-16LE"],(($$17=function(){var $each_byte$18,$bytesize$19=null==$$17.$$s?this:$$17.$$s;return Opal.def($bytesize$19,"$each_byte",$each_byte$18=function(string){var $iter=$each_byte$18.$$p,block=$iter||nil;$iter&&($each_byte$18.$$p=null),$iter&&($each_byte$18.$$p=null);for(var i=0,length=string.length;i<length;i++){var code=string.charCodeAt(i);Opal.yield1(block,255&code),Opal.yield1(block,code>>8)}},$each_byte$18.$$arity=1),Opal.def($bytesize$19,"$bytesize",$bytesize$19=function(string){return 2*string.length},$bytesize$19.$$arity=1),nil&&"bytesize"}).$$s=self,$$17.$$arity=0,$$17)),$send($$($nesting,"Encoding"),"register",["UTF-16BE",$hash2(["inherits"],{inherits:$$$($$($nesting,"Encoding"),"UTF_16LE")})],(($$20=function(){var $each_byte$21,self=null==$$20.$$s?this:$$20.$$s;return Opal.def(self,"$each_byte",$each_byte$21=function(string){var $iter=$each_byte$21.$$p,block=$iter||nil;$iter&&($each_byte$21.$$p=null),$iter&&($each_byte$21.$$p=null);for(var i=0,length=string.length;i<length;i++){var code=string.charCodeAt(i);Opal.yield1(block,code>>8),Opal.yield1(block,255&code)}},$each_byte$21.$$arity=1),nil&&"each_byte"}).$$s=self,$$20.$$arity=0,$$20)),$send($$($nesting,"Encoding"),"register",["UTF-32LE"],(($$22=function(){var $each_byte$23,$bytesize$24=null==$$22.$$s?this:$$22.$$s;return Opal.def($bytesize$24,"$each_byte",$each_byte$23=function(string){var $iter=$each_byte$23.$$p,block=$iter||nil;$iter&&($each_byte$23.$$p=null),$iter&&($each_byte$23.$$p=null);for(var i=0,length=string.length;i<length;i++){var code=string.charCodeAt(i);Opal.yield1(block,255&code),Opal.yield1(block,code>>8),Opal.yield1(block,0),Opal.yield1(block,0)}},$each_byte$23.$$arity=1),Opal.def($bytesize$24,"$bytesize",$bytesize$24=function(string){return 4*string.length},$bytesize$24.$$arity=1),nil&&"bytesize"}).$$s=self,$$22.$$arity=0,$$22)),$send($$($nesting,"Encoding"),"register",["UTF-32BE",$hash2(["inherits"],{inherits:$$$($$($nesting,"Encoding"),"UTF_32LE")})],(($$25=function(){var $each_byte$26,self=null==$$25.$$s?this:$$25.$$s;return Opal.def(self,"$each_byte",$each_byte$26=function(string){var $iter=$each_byte$26.$$p,block=$iter||nil;$iter&&($each_byte$26.$$p=null),$iter&&($each_byte$26.$$p=null);for(var i=0,length=string.length;i<length;i++){var code=string.charCodeAt(i);Opal.yield1(block,0),Opal.yield1(block,0),Opal.yield1(block,code>>8),Opal.yield1(block,255&code)}},$each_byte$26.$$arity=1),nil&&"each_byte"}).$$s=self,$$25.$$arity=0,$$25)),$send($$($nesting,"Encoding"),"register",["ASCII-8BIT",$hash2(["aliases","ascii"],{aliases:["BINARY"],ascii:!0})],(($$27=function(){var $each_char$28,$each_byte$30,$bytesize$31,$binary$ques$32=null==$$27.$$s?this:$$27.$$s;return Opal.def($binary$ques$32,"$each_char",$each_char$28=function(string){var $iter=$each_char$28.$$p,block=$iter||nil;$iter&&($each_char$28.$$p=null),$iter&&($each_char$28.$$p=null);for(var i=0,length=string.length;i<length;i++){var chr=new String(string.charAt(i));chr.encoding=string.encoding,Opal.yield1(block,chr)}},$each_char$28.$$arity=1),Opal.def($binary$ques$32,"$charsize",$bytesize$31=function(string){return string.length},$bytesize$31.$$arity=1),Opal.def($binary$ques$32,"$each_byte",$each_byte$30=function(string){var $iter=$each_byte$30.$$p,block=$iter||nil;$iter&&($each_byte$30.$$p=null),$iter&&($each_byte$30.$$p=null);for(var i=0,length=string.length;i<length;i++){var code=string.charCodeAt(i);Opal.yield1(block,255&code)}},$each_byte$30.$$arity=1),Opal.def($binary$ques$32,"$bytesize",$bytesize$31=function(string){return string.length},$bytesize$31.$$arity=1),Opal.def($binary$ques$32,"$binary?",$binary$ques$32=function(){return!0},$binary$ques$32.$$arity=0),nil&&"binary?"}).$$s=self,$$27.$$arity=0,$$27)),$$($nesting,"Encoding").$register("ISO-8859-1",$hash2(["aliases","ascii","inherits"],{aliases:["ISO8859-1"],ascii:!0,inherits:$$$($$($nesting,"Encoding"),"ASCII_8BIT")})),$$($nesting,"Encoding").$register("US-ASCII",$hash2(["aliases","ascii","inherits"],{aliases:["ASCII"],ascii:!0,inherits:$$$($$($nesting,"Encoding"),"ASCII_8BIT")})),function($String_valid_encoding$ques$48,$String_length$47){var $String_each_byte$35,$String_each_char$38,$String_chars$40,$String_each_codepoint$41,$String_codepoints$42,$nesting=[$String_valid_encoding$ques$48=$klass($String_valid_encoding$ques$48,null,"String")].concat($String_length$47);$String_valid_encoding$ques$48.$$prototype.internal_encoding=$String_valid_encoding$ques$48.$$prototype.bytes=$String_valid_encoding$ques$48.$$prototype.encoding=nil,$String_valid_encoding$ques$48.$attr_reader("encoding"),$String_valid_encoding$ques$48.$attr_reader("internal_encoding"),Opal.defineProperty(String.prototype,"bytes",nil),Opal.defineProperty(String.prototype,"encoding",$$$($$($nesting,"Encoding"),"UTF_8")),Opal.defineProperty(String.prototype,"internal_encoding",$$$($$($nesting,"Encoding"),"UTF_8")),Opal.def($String_valid_encoding$ques$48,"$b",$String_length$47=function(){return this.$dup().$force_encoding("binary")},$String_length$47.$$arity=0),Opal.def($String_valid_encoding$ques$48,"$bytesize",$String_length$47=function(){return this.internal_encoding.$bytesize(this)},$String_length$47.$$arity=0),Opal.def($String_valid_encoding$ques$48,"$each_byte",$String_each_byte$35=function(){var $$36,$iter=$String_each_byte$35.$$p,block=$iter||nil;return $iter&&($String_each_byte$35.$$p=null),$iter&&($String_each_byte$35.$$p=null),block===nil?$send(this,"enum_for",["each_byte"],(($$36=function(){return(null==$$36.$$s?this:$$36.$$s).$bytesize()}).$$s=this,$$36.$$arity=0,$$36)):($send(this.internal_encoding,"each_byte",[this],block.$to_proc()),this)},$String_each_byte$35.$$arity=0),Opal.def($String_valid_encoding$ques$48,"$bytes",$String_length$47=function(){var self=this,$ret_or_4=nil;return"string"==typeof self?new String(self).$each_byte().$to_a():(self.bytes=$truthy($ret_or_4=self.bytes)?$ret_or_4:self.$each_byte().$to_a(),self.bytes.$dup())},$String_length$47.$$arity=0),Opal.def($String_valid_encoding$ques$48,"$each_char",$String_each_char$38=function(){var $$39,$iter=$String_each_char$38.$$p,block=$iter||nil;return $iter&&($String_each_char$38.$$p=null),$iter&&($String_each_char$38.$$p=null),block===nil?$send(this,"enum_for",["each_char"],(($$39=function(){return(null==$$39.$$s?this:$$39.$$s).$length()}).$$s=this,$$39.$$arity=0,$$39)):($send(this.encoding,"each_char",[this],block.$to_proc()),this)},$String_each_char$38.$$arity=0),Opal.def($String_valid_encoding$ques$48,"$chars",$String_chars$40=function(){var $iter=$String_chars$40.$$p,block=$iter||nil;return $iter&&($String_chars$40.$$p=null),$iter&&($String_chars$40.$$p=null),$truthy(block)?$send(this,"each_char",[],block.$to_proc()):this.$each_char().$to_a()},$String_chars$40.$$arity=0),Opal.def($String_valid_encoding$ques$48,"$each_codepoint",$String_each_codepoint$41=function(){var $iter=$String_each_codepoint$41.$$p,block=$iter||nil;if($iter&&($String_each_codepoint$41.$$p=null),$iter&&($String_each_codepoint$41.$$p=null),block===nil)return this.$enum_for("each_codepoint");for(var i=0,length=this.length;i<length;i++)Opal.yield1(block,this.codePointAt(i));return this},$String_each_codepoint$41.$$arity=0),Opal.def($String_valid_encoding$ques$48,"$codepoints",$String_codepoints$42=function(){var $iter=$String_codepoints$42.$$p,block=$iter||nil;return $iter&&($String_codepoints$42.$$p=null),$iter&&($String_codepoints$42.$$p=null),block!==nil?$send(this,"each_codepoint",[],block.$to_proc()):this.$each_codepoint().$to_a()},$String_codepoints$42.$$arity=0),Opal.def($String_valid_encoding$ques$48,"$encode",$String_length$47=function(encoding){return Opal.enc(this,encoding)},$String_length$47.$$arity=1),Opal.def($String_valid_encoding$ques$48,"$force_encoding",$String_length$47=function(encoding){var str=this;return encoding===str.encoding?str:(encoding=$$($nesting,"Opal")["$coerce_to!"](encoding,$$($nesting,"String"),"to_s"),(encoding=$$($nesting,"Encoding").$find(encoding))===str.encoding?str:str=Opal.set_encoding(str,encoding))},$String_length$47.$$arity=1),Opal.def($String_valid_encoding$ques$48,"$getbyte",$String_length$47=function(idx){var lhs,rhs,string_bytes=nil,string_bytes=this.$bytes();return idx=$$($nesting,"Opal")["$coerce_to!"](idx,$$($nesting,"Integer"),"to_int"),$truthy((lhs=string_bytes.$length(),rhs=idx,"number"==typeof lhs&&"number"==typeof rhs?lhs<rhs:lhs["$<"](rhs)))?nil:string_bytes["$[]"](idx)},$String_length$47.$$arity=1),Opal.def($String_valid_encoding$ques$48,"$initialize_copy",$String_length$47=function(){return"\n      self.encoding = other.encoding;\n      self.internal_encoding = other.internal_encoding;\n    "},$String_length$47.$$arity=1),Opal.def($String_valid_encoding$ques$48,"$length",$String_length$47=function(){return this.length},$String_length$47.$$arity=0),$alias($String_valid_encoding$ques$48,"size","length"),Opal.def($String_valid_encoding$ques$48,"$valid_encoding?",$String_valid_encoding$ques$48=function(){return!0},$String_valid_encoding$ques$48.$$arity=0)}($nesting[0],$nesting),$writer=[$$$($$($nesting,"Encoding"),"UTF_8")],$send($$($nesting,"Encoding"),"default_external=",Opal.to_a($writer)),$writer[rhs=1,"number"==typeof(lhs=$writer.length)&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)]},Opal.modules["corelib/math"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$type_error=Opal.type_error,$module=Opal.module,$truthy=Opal.truthy;return Opal.add_stubs(["$new","$raise","$Float","$Integer","$module_function","$checked","$float!","$===","$gamma","$-","$integer!","$/","$infinite?"]),function($Math_tanh$29,$Math_tan$28){var $Math_tanh$29=$module($Math_tanh$29,"Math"),$nesting=[$Math_tanh$29].concat($Math_tan$28);return 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r=2/3*(r=2/3*(r=2/3*(r=2/3*r+1/3*x/(r*r))+1/3*x/(r*r))+1/3*x/(r*r))+1/3*x/(r*r)}),Opal.def($Math_tanh$29,"$cbrt",$Math_tan$28=function(x){return $$($nesting,"Math").$checked("cbrt",$$($nesting,"Math")["$float!"](x))},$Math_tan$28.$$arity=1),Opal.def($Math_tanh$29,"$cos",$Math_tan$28=function(x){return $$($nesting,"Math").$checked("cos",$$($nesting,"Math")["$float!"](x))},$Math_tan$28.$$arity=1),$truthy(void 0!==Math.cosh)||(Math.cosh=function(x){return(Math.exp(x)+Math.exp(-x))/2}),Opal.def($Math_tanh$29,"$cosh",$Math_tan$28=function(x){return $$($nesting,"Math").$checked("cosh",$$($nesting,"Math")["$float!"](x))},$Math_tan$28.$$arity=1),$truthy(void 0!==Math.erf)||Opal.defineProperty(Math,"erf",function(x){var sign=x<0?-1:1,t=1/(1+.3275911*(x=Math.abs(x)));return sign*(1-((((1.061405429*t-1.453152027)*t+1.421413741)*t-.284496736)*t+.254829592)*t*Math.exp(-x*x))}),Opal.def($Math_tanh$29,"$erf",$Math_tan$28=function(x){return $$($nesting,"Math").$checked("erf",$$($nesting,"Math")["$float!"](x))},$Math_tan$28.$$arity=1),$truthy(void 0!==Math.erfc)||Opal.defineProperty(Math,"erfc",function(x){var a=Math.abs(x),t=1/(.5*a+1),a=-a*a-1.26551223+t*(t*(t*(t*(t*(t*(t*(t*(.17087277*t-.82215223)+1.48851587)-1.13520398)+.27886807)-.18628806)+.09678418)+.37409196)+1.00002368),a=t*Math.exp(a);return x<0?2-a:a}),Opal.def($Math_tanh$29,"$erfc",$Math_tan$28=function(x){return $$($nesting,"Math").$checked("erfc",$$($nesting,"Math")["$float!"](x))},$Math_tan$28.$$arity=1),Opal.def($Math_tanh$29,"$exp",$Math_tan$28=function(x){return $$($nesting,"Math").$checked("exp",$$($nesting,"Math")["$float!"](x))},$Math_tan$28.$$arity=1),Opal.def($Math_tanh$29,"$frexp",$Math_tan$28=function(x){if(x=$$($nesting,"Math")["$float!"](x),isNaN(x))return[NaN,0];var ex=Math.floor(Math.log(Math.abs(x))/Math.log(2))+1;return[x/Math.pow(2,ex),ex]},$Math_tan$28.$$arity=1),Opal.def($Math_tanh$29,"$gamma",$Math_tan$28=function(n){var i,x,value,result,twoN,t;n=$$($nesting,"Math")["$float!"](n);var threeN,fourN,P=[.9999999999999971,57.15623566586292,-59.59796035547549,14.136097974741746,-.4919138160976202,3399464998481189e-20,4652362892704858e-20,-9837447530487956e-20,.0001580887032249125,-.00021026444172410488,.00021743961811521265,-.0001643181065367639,8441822398385275e-20,-26190838401581408e-21,36899182659531625e-22];if(isNaN(n))return NaN;if(0===n&&1/n<0)return-1/0;if(-1!==n&&n!==-1/0||this.$raise($$($nesting,"DomainError"),'Numerical argument is out of domain - "gamma"'),$$($nesting,"Integer")["$==="](n)){if(n<=0)return isFinite(n)?1/0:NaN;if(171<n)return 1/0;for(value=n-2,result=n-1;1<value;)result*=value,value--;return 0==result&&(result=1),result}if(n<.5)return Math.PI/(Math.sin(Math.PI*n)*$$($nesting,"Math").$gamma((fourN=n,"number"==typeof(threeN=1)&&"number"==typeof fourN?threeN-fourN:threeN["$-"](fourN))));if(171.35<=n)return 1/0;if(85<n)return t=(fourN=(threeN=(twoN=n*n)*n)*n)*n,Math.sqrt(2*Math.PI/n)*Math.pow(n/Math.E,n)*(1+1/(12*n)+1/(288*twoN)-139/(51840*threeN)-571/(2488320*fourN)+163879/(209018880*t)+5246819/(75246796800*t*n));for(--n,x=P[0],i=1;i<P.length;++i)x+=P[i]/(n+i);return t=n+4.7421875+.5,Math.sqrt(2*Math.PI)*Math.pow(t,n+.5)*Math.exp(-t)*x},$Math_tan$28.$$arity=1),$truthy(void 0!==Math.hypot)||(Math.hypot=function(x,y){return Math.sqrt(x*x+y*y)}),Opal.def($Math_tanh$29,"$hypot",$Math_tan$28=function(x,y){return $$($nesting,"Math").$checked("hypot",$$($nesting,"Math")["$float!"](x),$$($nesting,"Math")["$float!"](y))},$Math_tan$28.$$arity=2),Opal.def($Math_tanh$29,"$ldexp",$Math_tan$28=function(mantissa,exponent){return mantissa=$$($nesting,"Math")["$float!"](mantissa),exponent=$$($nesting,"Math")["$integer!"](exponent),isNaN(exponent)&&this.$raise($$($nesting,"RangeError"),"float NaN out of range of 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$$($nesting,"Math").$checked("sinh",$$($nesting,"Math")["$float!"](x))},$Math_tan$28.$$arity=1),Opal.def($Math_tanh$29,"$sqrt",$Math_tan$28=function(x){return $$($nesting,"Math").$checked("sqrt",$$($nesting,"Math")["$float!"](x))},$Math_tan$28.$$arity=1),Opal.def($Math_tanh$29,"$tan",$Math_tan$28=function(x){return x=$$($nesting,"Math")["$float!"](x),$truthy(x["$infinite?"]())?$$$($$($nesting,"Float"),"NAN"):$$($nesting,"Math").$checked("tan",$$($nesting,"Math")["$float!"](x))},$Math_tan$28.$$arity=1),$truthy(void 0!==Math.tanh)||(Math.tanh=function(x){return x==1/0?1:x==-1/0?-1:(Math.exp(x)-Math.exp(-x))/(Math.exp(x)+Math.exp(-x))}),Opal.def($Math_tanh$29,"$tanh",$Math_tanh$29=function(x){return $$($nesting,"Math").$checked("tanh",$$($nesting,"Math")["$float!"](x))},$Math_tanh$29.$$arity=1),nil&&"tanh"}($nesting[0],$nesting)},Opal.modules["corelib/complex"]=function(Opal){function $rb_times(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs*rhs:lhs["$*"](rhs)}function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}function $rb_divide(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs/rhs:lhs["$/"](rhs)}var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$klass=Opal.klass,$truthy=Opal.truthy,$alias=Opal.alias,$module=Opal.module;return Opal.add_stubs(["$require","$===","$real?","$raise","$new","$*","$cos","$sin","$attr_reader","$class","$==","$real","$imag","$Complex","$-@","$+","$__coerced__","$-","$nan?","$/","$conj","$abs2","$quo","$polar","$exp","$log","$>","$!=","$divmod","$**","$hypot","$atan2","$lcm","$denominator","$finite?","$infinite?","$numerator","$abs","$arg","$rationalize","$to_f","$to_i","$to_r","$inspect","$positive?","$zero?","$Rational"]),self.$require("corelib/numeric"),function($base,self,$Complex_to_s$31){var $nesting=[self=$klass($base,self,"Complex")].concat($Complex_to_s$31);self.$$prototype.real=self.$$prototype.imag=nil,Opal.defs(self,"$rect",$Complex_to_s$31=function(real,imag){var $ret_or_1=nil,$ret_or_2=nil,$ret_or_3=nil;return null==imag&&(imag=0),$truthy($truthy($ret_or_1=$truthy($ret_or_2=$truthy($ret_or_3=$$($nesting,"Numeric")["$==="](real))?real["$real?"]():$ret_or_3)?$$($nesting,"Numeric")["$==="](imag):$ret_or_2)?imag["$real?"]():$ret_or_1)||this.$raise($$($nesting,"TypeError"),"not a real"),this.$new(real,imag)},$Complex_to_s$31.$$arity=-2),function(self,$parent_nesting){[self].concat($parent_nesting),$alias(self,"rectangular","rect")}(Opal.get_singleton_class(self),$nesting),Opal.defs(self,"$polar",$Complex_to_s$31=function(r,theta){var $ret_or_4=nil,$ret_or_5=nil,$ret_or_6=nil;return 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null==precision&&(precision=0),precision["$=="](0)?$rb_divide(this.num["$-@"](),this.den)["$-@"]().$floor():this.$with_precision("floor",precision)},$Rational_truncate$25.$$arity=-1),Opal.def($Rational_with_precision$26,"$hash",$Rational_truncate$25=function(){return"Rational:"+this.num+":"+this.den},$Rational_truncate$25.$$arity=0),Opal.def($Rational_with_precision$26,"$inspect",$Rational_truncate$25=function(){return"("+this+")"},$Rational_truncate$25.$$arity=0),$alias($Rational_with_precision$26,"quo","/"),Opal.def($Rational_with_precision$26,"$rationalize",$Rational_truncate$25=function(eps){if(1<arguments.length&&this.$raise($$($nesting,"ArgumentError"),"wrong number of arguments ("+arguments.length+" for 0..1)"),null==eps)return this;for(var p2,c,k,q2,t,e=eps.$abs(),a=$rb_minus(this,e),b=$rb_plus(this,e),p0=0,p1=1,q0=1,q1=0;c=a.$ceil(),t=b,!("number"==typeof(q2=c)&&"number"==typeof t?q2<=t:q2["$<="](t));)p2=(k=c-1)*p1+p0,q2=k*q1+q0,t=$rb_divide(1,$rb_minus(b,k)),b=$rb_divide(1,$rb_minus(a,k)),a=t,p0=p1,q0=q1,p1=p2,q1=q2;return this.$Rational(c*p1+p0,c*q1+q0)},$Rational_truncate$25.$$arity=-1),Opal.def($Rational_with_precision$26,"$round",$Rational_truncate$25=function(precision){var approx=nil;return null==precision&&(precision=0),precision["$=="](0)?this.num["$=="](0)?0:this.den["$=="](1)?this.num:(approx=$rb_divide($rb_plus($rb_times(this.num.$abs(),2),this.den),$rb_times(this.den,2)).$truncate(),$truthy($rb_lt(this.num,0))?approx["$-@"]():approx):this.$with_precision("round",precision)},$Rational_truncate$25.$$arity=-1),Opal.def($Rational_with_precision$26,"$to_f",$Rational_truncate$25=function(){return $rb_divide(this.num,this.den)},$Rational_truncate$25.$$arity=0),Opal.def($Rational_with_precision$26,"$to_i",$Rational_truncate$25=function(){return this.$truncate()},$Rational_truncate$25.$$arity=0),Opal.def($Rational_with_precision$26,"$to_r",$Rational_truncate$25=function(){return this},$Rational_truncate$25.$$arity=0),Opal.def($Rational_with_precision$26,"$to_s",$Rational_truncate$25=function(){return this.num+"/"+this.den},$Rational_truncate$25.$$arity=0),Opal.def($Rational_with_precision$26,"$truncate",$Rational_truncate$25=function(precision){return null==precision&&(precision=0),precision["$=="](0)?$truthy($rb_lt(this.num,0))?this.$ceil():this.$floor():this.$with_precision("truncate",precision)},$Rational_truncate$25.$$arity=-1),Opal.def($Rational_with_precision$26,"$with_precision",$Rational_with_precision$26=function(method,precision){var p,s=nil;return $truthy($$($nesting,"Integer")["$==="](precision))||this.$raise($$($nesting,"TypeError"),"not an Integer"),s=$rb_times(this,p=10["$**"](precision)),$truthy($rb_lt(precision,1))?$rb_divide(s.$send(method),p).$to_i():this.$Rational(s.$send(method),p)},$Rational_with_precision$26.$$arity=2)}($nesting[0],$$($nesting,"Numeric"),$nesting),function($Kernel_Rational$27,$parent_nesting){var $nesting=[$Kernel_Rational$27=$module($Kernel_Rational$27,"Kernel")].concat($parent_nesting);Opal.def($Kernel_Rational$27,"$Rational",$Kernel_Rational$27=function(numerator,denominator){return null==denominator&&(denominator=1),$$($nesting,"Rational").$convert(numerator,denominator)},$Kernel_Rational$27.$$arity=-2)}($nesting[0],$nesting),function($String_to_r$28,$parent_nesting){$String_to_r$28=$klass($String_to_r$28,null,"String"),[$String_to_r$28].concat($parent_nesting);return Opal.def($String_to_r$28,"$to_r",$String_to_r$28=function(){var numerator,denominator,str=this.trimLeft(),re=/^[+-]?[\d_]+(\.[\d_]+)?/;str.match(re);function isFloat(){return re.test(str)}function cutFloat(){var number=str.match(re)[0];return str=str.slice(number.length),number.replace(/_/g,"")}return isFloat()?(numerator=parseFloat(cutFloat()),"/"===str[0]?(str=str.slice(1),isFloat()?(denominator=parseFloat(cutFloat()),this.$Rational(numerator,denominator)):this.$Rational(numerator,1)):this.$Rational(numerator,1)):this.$Rational(0,1)},$String_to_r$28.$$arity=0),nil&&"to_r"}($nesting[0],$nesting)},Opal.modules["corelib/time"]=function(Opal){function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}function $rb_divide(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs/rhs:lhs["$/"](rhs)}function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}function $rb_le(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs<=rhs:lhs["$<="](rhs)}var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$slice=Opal.slice,$klass=Opal.klass,$alias=Opal.alias,$truthy=Opal.truthy,$range=Opal.range;return Opal.add_stubs(["$require","$include","$===","$raise","$coerce_to!","$respond_to?","$to_str","$to_i","$new","$<=>","$to_f","$nil?","$>","$<","$strftime","$year","$month","$day","$+","$round","$/","$-","$copy_instance_variables","$initialize_dup","$is_a?","$zero?","$wday","$utc?","$mon","$yday","$hour","$min","$sec","$rjust","$ljust","$zone","$to_s","$[]","$cweek_cyear","$isdst","$<=","$!=","$==","$ceil"]),self.$require("corelib/comparable"),function($base,$super,$Time_cweek_cyear$42){var self=$klass($base,$super,"Time"),$nesting=[self].concat($Time_cweek_cyear$42);self.$include($$($nesting,"Comparable"));var days_of_week=["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday","Sunday"],short_days=["Sun","Mon","Tue","Wed","Thu","Fri","Sat"],short_months=["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"],long_months=["January","February","March","April","May","June","July","August","September","October","November","December"];function time_params(year,month,day,hour,min,sec){if(year=year.$$is_string?parseInt(year,10):$$($nesting,"Opal")["$coerce_to!"](year,$$($nesting,"Integer"),"to_int"),month===nil)month=1;else if(!month.$$is_number)if(month["$respond_to?"]("to_str"))switch((month=month.$to_str()).toLowerCase()){case"jan":month=1;break;case"feb":month=2;break;case"mar":month=3;break;case"apr":month=4;break;case"may":month=5;break;case"jun":month=6;break;case"jul":month=7;break;case"aug":month=8;break;case"sep":month=9;break;case"oct":month=10;break;case"nov":month=11;break;case"dec":month=12;break;default:month=month.$to_i()}else month=$$($nesting,"Opal")["$coerce_to!"](month,$$($nesting,"Integer"),"to_int");return(month<1||12<month)&&self.$raise($$($nesting,"ArgumentError"),"month out of range: "+month),--month,((day=day===nil?1:day.$$is_string?parseInt(day,10):$$($nesting,"Opal")["$coerce_to!"](day,$$($nesting,"Integer"),"to_int"))<1||31<day)&&self.$raise($$($nesting,"ArgumentError"),"day out of range: "+day),((hour=hour===nil?0:hour.$$is_string?parseInt(hour,10):$$($nesting,"Opal")["$coerce_to!"](hour,$$($nesting,"Integer"),"to_int"))<0||24<hour)&&self.$raise($$($nesting,"ArgumentError"),"hour out of range: "+hour),((min=min===nil?0:min.$$is_string?parseInt(min,10):$$($nesting,"Opal")["$coerce_to!"](min,$$($nesting,"Integer"),"to_int"))<0||59<min)&&self.$raise($$($nesting,"ArgumentError"),"min out of range: "+min),sec===nil?sec=0:sec.$$is_number||(sec=sec.$$is_string?parseInt(sec,10):$$($nesting,"Opal")["$coerce_to!"](sec,$$($nesting,"Integer"),"to_int")),(sec<0||60<sec)&&self.$raise($$($nesting,"ArgumentError"),"sec out of range: "+sec),[year,month,day,hour,min,sec]}return Opal.defs(self,"$at",$Time_cweek_cyear$42=function(seconds,frac){var result;return $$($nesting,"Time")["$==="](seconds)?(void 0!==frac&&this.$raise($$($nesting,"TypeError"),"can't convert Time into an exact number"),(result=new Date(seconds.getTime())).is_utc=seconds.is_utc,result):(seconds.$$is_number||(seconds=$$($nesting,"Opal")["$coerce_to!"](seconds,$$($nesting,"Integer"),"to_int")),void 0===frac?new Date(1e3*seconds):(frac.$$is_number||(frac=$$($nesting,"Opal")["$coerce_to!"](frac,$$($nesting,"Integer"),"to_int")),new Date(1e3*seconds+frac/1e3)))},$Time_cweek_cyear$42.$$arity=-2),Opal.defs(self,"$new",$Time_cweek_cyear$42=function(year,month,day,hour,min,result,args){return null==month&&(month=nil),null==day&&(day=nil),null==hour&&(hour=nil),null==min&&(min=nil),null==result&&(result=nil),null==args&&(args=nil),void 0===year?new Date:(args!==nil&&this.$raise($$($nesting,"ArgumentError"),"Opal does not support explicitly specifying UTC offset for Time"),year=(args=time_params(year,month,day,hour,min,result))[0],month=args[1],day=args[2],hour=args[3],min=args[4],result=args[5],result=new Date(year,month,day,hour,min,0,1e3*result),year<100&&result.setFullYear(year),result)},$Time_cweek_cyear$42.$$arity=-1),Opal.defs(self,"$local",$Time_cweek_cyear$42=function(year,month,day,hour,min,sec,millisecond,_dummy1,_dummy2,_dummy3){var result;return null==month&&(month=nil),null==day&&(day=nil),null==hour&&(hour=nil),null==min&&(min=nil),null==sec&&(sec=nil),null==millisecond&&(millisecond=nil),null==_dummy1&&(_dummy1=nil),null==_dummy2&&(_dummy2=nil),null==_dummy3&&(_dummy3=nil),10===arguments.length&&(year=(result=$slice.call(arguments))[5],month=result[4],day=result[3],hour=result[2],min=result[1],sec=result[0]),year=(result=time_params(year,month,day,hour,min,sec))[0],month=result[1],day=result[2],hour=result[3],min=result[4],sec=result[5],result=new Date(year,month,day,hour,min,0,1e3*sec),year<100&&result.setFullYear(year),result},$Time_cweek_cyear$42.$$arity=-2),Opal.defs(self,"$gm",$Time_cweek_cyear$42=function(year,month,day,hour,min,sec,millisecond,_dummy1,_dummy2,_dummy3){var result;return null==month&&(month=nil),null==day&&(day=nil),null==hour&&(hour=nil),null==min&&(min=nil),null==sec&&(sec=nil),null==millisecond&&(millisecond=nil),null==_dummy1&&(_dummy1=nil),null==_dummy2&&(_dummy2=nil),null==_dummy3&&(_dummy3=nil),10===arguments.length&&(year=(result=$slice.call(arguments))[5],month=result[4],day=result[3],hour=result[2],min=result[1],sec=result[0]),year=(result=time_params(year,month,day,hour,min,sec))[0],month=result[1],day=result[2],hour=result[3],min=result[4],sec=result[5],result=new Date(Date.UTC(year,month,day,hour,min,0,1e3*sec)),year<100&&result.setUTCFullYear(year),result.is_utc=!0,result},$Time_cweek_cyear$42.$$arity=-2),function(self,$parent_nesting){[self].concat($parent_nesting),$alias(self,"mktime","local"),$alias(self,"utc","gm")}(Opal.get_singleton_class(self),$nesting),Opal.defs(self,"$now",$Time_cweek_cyear$42=function(){return this.$new()},$Time_cweek_cyear$42.$$arity=0),Opal.def(self,"$+",$Time_cweek_cyear$42=function(result){$truthy($$($nesting,"Time")["$==="](result))&&this.$raise($$($nesting,"TypeError"),"time + time?"),result.$$is_number||(result=$$($nesting,"Opal")["$coerce_to!"](result,$$($nesting,"Integer"),"to_int"));result=new Date(this.getTime()+1e3*result);return result.is_utc=this.is_utc,result},$Time_cweek_cyear$42.$$arity=1),Opal.def(self,"$-",$Time_cweek_cyear$42=function(result){if($truthy($$($nesting,"Time")["$==="](result)))return(this.getTime()-result.getTime())/1e3;result.$$is_number||(result=$$($nesting,"Opal")["$coerce_to!"](result,$$($nesting,"Integer"),"to_int"));result=new Date(this.getTime()-1e3*result);return result.is_utc=this.is_utc,result},$Time_cweek_cyear$42.$$arity=1),Opal.def(self,"$<=>",$Time_cweek_cyear$42=function(lhs){var rhs,r=nil;return $truthy($$($nesting,"Time")["$==="](lhs))?this.$to_f()["$<=>"](lhs.$to_f()):(r=lhs["$<=>"](this),$truthy(r["$nil?"]())?nil:$truthy((rhs=0,"number"==typeof(lhs=r)&&"number"==typeof rhs?rhs<lhs:lhs["$>"](rhs)))?-1:$truthy(function(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs<rhs:lhs["$<"](rhs)}(r,0))?1:0)},$Time_cweek_cyear$42.$$arity=1),Opal.def(self,"$==",$Time_cweek_cyear$42=function(other){var $ret_or_1;return $truthy($ret_or_1=$$($nesting,"Time")["$==="](other))?this.$to_f()===other.$to_f():$ret_or_1},$Time_cweek_cyear$42.$$arity=1),Opal.def(self,"$asctime",$Time_cweek_cyear$42=function(){return this.$strftime("%a %b %e %H:%M:%S %Y")},$Time_cweek_cyear$42.$$arity=0),$alias(self,"ctime","asctime"),Opal.def(self,"$day",$Time_cweek_cyear$42=function(){return this.is_utc?this.getUTCDate():this.getDate()},$Time_cweek_cyear$42.$$arity=0),Opal.def(self,"$yday",$Time_cweek_cyear$42=function(){var start_of_year=$$($nesting,"Time").$new(this.$year()).$to_i();return $rb_plus($rb_divide($rb_minus($$($nesting,"Time").$new(this.$year(),this.$month(),this.$day()).$to_i(),start_of_year),86400).$round(),1)},$Time_cweek_cyear$42.$$arity=0),Opal.def(self,"$isdst",$Time_cweek_cyear$42=function(){var jan=new Date(this.getFullYear(),0,1),jul=new Date(this.getFullYear(),6,1);return this.getTimezoneOffset()<Math.max(jan.getTimezoneOffset(),jul.getTimezoneOffset())},$Time_cweek_cyear$42.$$arity=0),$alias(self,"dst?","isdst"),Opal.def(self,"$dup",$Time_cweek_cyear$42=function(){var copy=nil;return(copy=new Date(this.getTime())).$copy_instance_variables(this),copy.$initialize_dup(this),copy},$Time_cweek_cyear$42.$$arity=0),Opal.def(self,"$eql?",$Time_cweek_cyear$42=function(other){var $ret_or_2;return $truthy($ret_or_2=other["$is_a?"]($$($nesting,"Time")))?this["$<=>"](other)["$zero?"]():$ret_or_2},$Time_cweek_cyear$42.$$arity=1),Opal.def(self,"$friday?",$Time_cweek_cyear$42=function(){return 5==this.$wday()},$Time_cweek_cyear$42.$$arity=0),Opal.def(self,"$hash",$Time_cweek_cyear$42=function(){return"Time:"+this.getTime()},$Time_cweek_cyear$42.$$arity=0),Opal.def(self,"$hour",$Time_cweek_cyear$42=function(){return this.is_utc?this.getUTCHours():this.getHours()},$Time_cweek_cyear$42.$$arity=0),Opal.def(self,"$inspect",$Time_cweek_cyear$42=function(){return $truthy(this["$utc?"]())?this.$strftime("%Y-%m-%d %H:%M:%S UTC"):this.$strftime("%Y-%m-%d %H:%M:%S %z")},$Time_cweek_cyear$42.$$arity=0),$alias(self,"mday","day"),Opal.def(self,"$min",$Time_cweek_cyear$42=function(){return this.is_utc?this.getUTCMinutes():this.getMinutes()},$Time_cweek_cyear$42.$$arity=0),Opal.def(self,"$mon",$Time_cweek_cyear$42=function(){return(this.is_utc?this.getUTCMonth():this.getMonth())+1},$Time_cweek_cyear$42.$$arity=0),Opal.def(self,"$monday?",$Time_cweek_cyear$42=function(){return 1==this.$wday()},$Time_cweek_cyear$42.$$arity=0),$alias(self,"month","mon"),Opal.def(self,"$saturday?",$Time_cweek_cyear$42=function(){return 6==this.$wday()},$Time_cweek_cyear$42.$$arity=0),Opal.def(self,"$sec",$Time_cweek_cyear$42=function(){return this.is_utc?this.getUTCSeconds():this.getSeconds()},$Time_cweek_cyear$42.$$arity=0),Opal.def(self,"$succ",$Time_cweek_cyear$42=function(){var result=new Date(this.getTime()+1e3);return result.is_utc=this.is_utc,result},$Time_cweek_cyear$42.$$arity=0),Opal.def(self,"$usec",$Time_cweek_cyear$42=function(){return 1e3*this.getMilliseconds()},$Time_cweek_cyear$42.$$arity=0),Opal.def(self,"$zone",$Time_cweek_cyear$42=function(){var string=this.toString(),result=-1==string.indexOf("(")?string.match(/[A-Z]{3,4}/)[0]:string.match(/\((.+)\)(?:\s|$)/)[1];return"GMT"==result&&/(GMT\W*\d{4})/.test(string)?RegExp.$1:result},$Time_cweek_cyear$42.$$arity=0),Opal.def(self,"$getgm",$Time_cweek_cyear$42=function(){var result=new Date(this.getTime());return result.is_utc=!0,result},$Time_cweek_cyear$42.$$arity=0),$alias(self,"getutc","getgm"),Opal.def(self,"$gmtime",$Time_cweek_cyear$42=function(){return this.is_utc=!0,this},$Time_cweek_cyear$42.$$arity=0),$alias(self,"utc","gmtime"),Opal.def(self,"$gmt?",$Time_cweek_cyear$42=function(){return!0===this.is_utc},$Time_cweek_cyear$42.$$arity=0),Opal.def(self,"$gmt_offset",$Time_cweek_cyear$42=function(){return this.is_utc?0:60*-this.getTimezoneOffset()},$Time_cweek_cyear$42.$$arity=0),Opal.def(self,"$strftime",$Time_cweek_cyear$42=function(format){var self=this;return format.replace(/%([\-_#^0]*:{0,2})(\d+)?([EO]*)(.)/g,function(full,flags,width,_,conv){var result="",zero=-1!==flags.indexOf("0"),pad=-1===flags.indexOf("-"),blank=-1!==flags.indexOf("_"),upcase=-1!==flags.indexOf("^"),invert=-1!==flags.indexOf("#"),colons=(flags.match(":")||[]).length;switch(width=parseInt(width,10),zero&&blank&&(flags.indexOf("0")<flags.indexOf("_")?zero=!1:blank=!1),conv){case"Y":result+=self.$year();break;case"C":zero=!blank,result+=Math.round(self.$year()/100);break;case"y":zero=!blank,result+=self.$year()%100;break;case"m":zero=!blank,result+=self.$mon();break;case"B":result+=long_months[self.$mon()-1];break;case"b":case"h":blank=!zero,result+=short_months[self.$mon()-1];break;case"d":zero=!blank,result+=self.$day();break;case"e":blank=!zero,result+=self.$day();break;case"j":zero=!blank,width=isNaN(width)?3:width,result+=self.$yday();break;case"H":zero=!blank,result+=self.$hour();break;case"k":blank=!zero,result+=self.$hour();break;case"I":zero=!blank,result+=self.$hour()%12||12;break;case"l":blank=!zero,result+=self.$hour()%12||12;break;case"P":result+=12<=self.$hour()?"pm":"am";break;case"p":result+=12<=self.$hour()?"PM":"AM";break;case"M":zero=!blank,result+=self.$min();break;case"S":zero=!blank,result+=self.$sec();break;case"L":zero=!blank,width=isNaN(width)?3:width,result+=self.getMilliseconds();break;case"N":width=isNaN(width)?9:width,result=(result+=self.getMilliseconds().toString().$rjust(3,"0")).$ljust(width,"0");break;case"z":var offset=self.getTimezoneOffset(),hours=Math.floor(Math.abs(offset)/60),minutes=Math.abs(offset)%60;result+=offset<0?"+":"-",result+=hours<10?"0":"",result+=hours,0<colons&&(result+=":"),result+=minutes<10?"0":"",result+=minutes,1<colons&&(result+=":00");break;case"Z":result+=self.$zone();break;case"A":result+=days_of_week[self.$wday()];break;case"a":result+=short_days[self.$wday()];break;case"u":result+=self.$wday()+1;break;case"w":result+=self.$wday();break;case"V":result+=self.$cweek_cyear()["$[]"](0).$to_s().$rjust(2,"0");break;case"G":result+=self.$cweek_cyear()["$[]"](1);break;case"g":result+=self.$cweek_cyear()["$[]"](1)["$[]"]($range(-2,-1,!1));break;case"s":result+=self.$to_i();break;case"n":result+="\n";break;case"t":result+="\t";break;case"%":result+="%";break;case"c":result+=self.$strftime("%a %b %e %T %Y");break;case"D":case"x":result+=self.$strftime("%m/%d/%y");break;case"F":result+=self.$strftime("%Y-%m-%d");break;case"v":result+=self.$strftime("%e-%^b-%4Y");break;case"r":result+=self.$strftime("%I:%M:%S %p");break;case"R":result+=self.$strftime("%H:%M");break;case"T":case"X":result+=self.$strftime("%H:%M:%S");break;default:return full}return upcase&&(result=result.toUpperCase()),invert&&(result=result.replace(/[A-Z]/,function(c){c.toLowerCase()}).replace(/[a-z]/,function(c){c.toUpperCase()})),pad&&(zero||blank)&&(result=result.$rjust(isNaN(width)?2:width,blank?" ":"0")),result})},$Time_cweek_cyear$42.$$arity=1),Opal.def(self,"$sunday?",$Time_cweek_cyear$42=function(){return 0==this.$wday()},$Time_cweek_cyear$42.$$arity=0),Opal.def(self,"$thursday?",$Time_cweek_cyear$42=function(){return 4==this.$wday()},$Time_cweek_cyear$42.$$arity=0),Opal.def(self,"$to_a",$Time_cweek_cyear$42=function(){return[this.$sec(),this.$min(),this.$hour(),this.$day(),this.$month(),this.$year(),this.$wday(),this.$yday(),this.$isdst(),this.$zone()]},$Time_cweek_cyear$42.$$arity=0),Opal.def(self,"$to_f",$Time_cweek_cyear$42=function(){return this.getTime()/1e3},$Time_cweek_cyear$42.$$arity=0),Opal.def(self,"$to_i",$Time_cweek_cyear$42=function(){return parseInt(this.getTime()/1e3,10)},$Time_cweek_cyear$42.$$arity=0),$alias(self,"to_s","inspect"),Opal.def(self,"$tuesday?",$Time_cweek_cyear$42=function(){return 2==this.$wday()},$Time_cweek_cyear$42.$$arity=0),$alias(self,"tv_sec","to_i"),$alias(self,"tv_usec","usec"),$alias(self,"utc?","gmt?"),$alias(self,"gmtoff","gmt_offset"),$alias(self,"utc_offset","gmt_offset"),Opal.def(self,"$wday",$Time_cweek_cyear$42=function(){return this.is_utc?this.getUTCDay():this.getDay()},$Time_cweek_cyear$42.$$arity=0),Opal.def(self,"$wednesday?",$Time_cweek_cyear$42=function(){return 3==this.$wday()},$Time_cweek_cyear$42.$$arity=0),Opal.def(self,"$year",$Time_cweek_cyear$42=function(){return this.is_utc?this.getUTCFullYear():this.getFullYear()},$Time_cweek_cyear$42.$$arity=0),Opal.def(self,"$cweek_cyear",$Time_cweek_cyear$42=function(){var jan01_wday=nil,year=nil,$ret_or_3=nil,offset=nil,week=nil,dec31=nil,dec31_wday=nil,$ret_or_4=nil,jan01_wday=$$($nesting,"Time").$new(this.$year(),1,1).$wday(),year=this.$year();return 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i=0,ii=parts.length;i<ii;i++)(part=parts[i])===nil||""===part&&(0===new_parts.length||abs)||"."===part&&(0===new_parts.length||abs)||(".."===part?new_parts.pop():new_parts.push(part));return abs||"."===parts[0]||new_parts.$unshift("."),new_path=new_parts.$join(sep),$truthy(abs)&&(new_path=$rb_plus(leading_sep,new_path)),new_path},$join$9.$$arity=-2),Opal.def($split$12,"$expand_path",$join$9=function(path,basedir){var sep,sep_chars,leading_sep,home_path_regexp,home=nil;return null==basedir&&(basedir=nil),sep=$$($nesting,"SEPARATOR"),sep_chars=$sep_chars(),$truthy("~"===path[0]||basedir&&"~"===basedir[0])&&(home=$$($nesting,"Dir").$home(),$truthy(home)||this.$raise($$($nesting,"ArgumentError"),"couldn't find HOME environment -- expanding `~'"),leading_sep=windows_root_rx.test(home)?"":home.$sub(Opal.regexp(["^([",sep_chars,"]+).*$"]),"\\1"),$truthy(home["$start_with?"](leading_sep))||this.$raise($$($nesting,"ArgumentError"),"non-absolute 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RegExp("(.)["+sep_chars+"]*$"),"$1")).replace(new RegExp("^(?:.*["+sep_chars+"])?([^"+sep_chars+"]+)$"),"$1"),".*"===suffix?name=name.replace(/\.[^\.]+$/,""):null!==suffix&&(suffix=Opal.escape_regexp(suffix),name=name.replace(new RegExp(suffix+"$"),""))),name},$join$9.$$arity=-2),Opal.def($split$12,"$extname",$join$9=function(lhs){var filename=nil,last_dot_idx=nil,rhs=nil;return lhs=$coerce_to_path(lhs),filename=this.$basename(lhs),$truthy(filename["$empty?"]())?"":(last_dot_idx=filename["$[]"]($range(1,-1,!1)).$rindex("."),$truthy($truthy(rhs=last_dot_idx["$nil?"]())?rhs:$rb_plus(last_dot_idx,1)["$=="]((lhs=filename.$length(),rhs=1,"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs))))?"":filename["$[]"](Opal.Range.$new($rb_plus(last_dot_idx,1),-1,!1)))},$join$9.$$arity=1),Opal.def($split$12,"$exist?",$join$9=function(path){return null!=Opal.modules[path]},$join$9.$$arity=1),$alias($split$12,"exists?","exist?"),Opal.def($split$12,"$directory?",$join$9=function(path){var $$8,key,files=nil,files=[];for(key in Opal.modules)files.push(key);return path=path.$gsub(Opal.regexp(["(^.",$$($nesting,"SEPARATOR"),"+|",$$($nesting,"SEPARATOR"),"+$)"])),$send(files,"find",[],(($$8=function(f){null==$$8.$$s||$$8.$$s;return null==f&&(f=nil),f["$=~"](Opal.regexp(["^",path]))}).$$s=this,$$8.$$arity=1,$$8))},$join$9.$$arity=1),Opal.def($split$12,"$join",$join$9=function($a){var $$10,$$11,result=nil,paths=Opal.slice.call(arguments,0,arguments.length);return $truthy(paths["$empty?"]())?"":(result="",paths=$send(paths.$flatten().$each_with_index(),"map",[],(($$10=function(item,index){null==$$10.$$s||$$10.$$s;var $ret_or_3=nil,$ret_or_4=nil;return null==item&&(item=nil),null==index&&(index=nil),$truthy($truthy($ret_or_3=index["$=="](0))?item["$empty?"]():$ret_or_3)||$truthy($truthy($ret_or_4=paths.$length()["$=="]($rb_plus(index,1)))?item["$empty?"]():$ret_or_4)?$$($nesting,"SEPARATOR"):item}).$$s=this,$$10.$$arity=2,$$10)),paths=$send(paths,"reject",[],"empty?".$to_proc()),$send(paths,"each_with_index",[],(($$11=function(item,index){null==$$11.$$s||$$11.$$s;var next_item=nil,$ret_or_5=nil,$ret_or_6=nil;return null==item&&(item=nil),null==index&&(index=nil),next_item=paths["$[]"]($rb_plus(index,1)),result=$truthy(next_item["$nil?"]())?""+result+item:($truthy($truthy($ret_or_5=item["$end_with?"]($$($nesting,"SEPARATOR")))?next_item["$start_with?"]($$($nesting,"SEPARATOR")):$ret_or_5)&&(item=item.$sub(Opal.regexp([$$($nesting,"SEPARATOR"),"+$"]),"")),$truthy($truthy($ret_or_6=item["$end_with?"]($$($nesting,"SEPARATOR")))?$ret_or_6:next_item["$start_with?"]($$($nesting,"SEPARATOR")))?""+result+item:""+result+item+$$($nesting,"SEPARATOR"))}).$$s=this,$$11.$$arity=2,$$11)),result)},$join$9.$$arity=-1),Opal.def($split$12,"$split",$split$12=function(path){return path.$split($$($nesting,"SEPARATOR"))},$split$12.$$arity=1),nil&&"split"}(Opal.get_singleton_class(self),$nesting)}($nesting[0],$$($nesting,"IO"),$nesting)},Opal.modules["corelib/process"]=function(Opal){Opal.top;var $Signal_trap$5,$parent_nesting,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$klass=Opal.klass,$truthy=Opal.truthy;return Opal.add_stubs(["$const_set","$size","$<<","$__register_clock__","$to_f","$now","$new","$[]","$raise"]),function($Process_times$3,$Process___register_clock__$1){var hrtime_base,$Process_clock_gettime$4=$klass($Process_times$3,null,"Process"),$nesting=[$Process_clock_gettime$4].concat($Process___register_clock__$1),$Process_times$3=nil;$Process_clock_gettime$4.__clocks__=[],Opal.defs($Process_clock_gettime$4,"$__register_clock__",$Process___register_clock__$1=function(name,func){return null==this.__clocks__&&(this.__clocks__=nil),this.$const_set(name,this.__clocks__.$size()),this.__clocks__["$<<"](func)},$Process___register_clock__$1.$$arity=2),$Process_clock_gettime$4.$__register_clock__("CLOCK_REALTIME",function(){return Date.now()}),$Process_times$3=!1,Opal.global.performance?$Process_times$3=function(){return performance.now()}:Opal.global.process&&process.hrtime&&(hrtime_base=process.hrtime(),$Process_times$3=function(){var hrtime=process.hrtime(hrtime_base),us=hrtime[1]/1e3|0;return 1e3*hrtime[0]+us/1e3}),$truthy($Process_times$3)&&$Process_clock_gettime$4.$__register_clock__("CLOCK_MONOTONIC",$Process_times$3),Opal.defs($Process_clock_gettime$4,"$pid",$Process_times$3=function(){return 0},$Process_times$3.$$arity=0),Opal.defs($Process_clock_gettime$4,"$times",$Process_times$3=function(){var t=$$($nesting,"Time").$now().$to_f();return $$$($$($nesting,"Benchmark"),"Tms").$new(t,t,t,t,t)},$Process_times$3.$$arity=0),Opal.defs($Process_clock_gettime$4,"$clock_gettime",$Process_clock_gettime$4=function(clock_id,unit){var clock=nil;null==this.__clocks__&&(this.__clocks__=nil),null==unit&&(unit="float_second"),$truthy(clock=this.__clocks__["$[]"](clock_id))||this.$raise($$$($$($nesting,"Errno"),"EINVAL"),"clock_gettime("+clock_id+") "+this.__clocks__["$[]"](clock_id));var ms=clock();switch(unit){case"float_second":return ms/1e3;case"float_millisecond":return+ms;case"float_microsecond":return 1e3*ms;case"second":return ms/1e3|0;case"millisecond":return 0|+ms;case"microsecond":return 1e3*ms|0;case"nanosecond":return 1e6*ms|0;default:this.$raise($$($nesting,"ArgumentError"),"unexpected unit: "+unit)}},$Process_clock_gettime$4.$$arity=-2)}($nesting[0],$nesting),[$Signal_trap$5=$klass($Signal_trap$5=($parent_nesting=$nesting)[0],null,"Signal")].concat($parent_nesting),Opal.defs($Signal_trap$5,"$trap",$Signal_trap$5=function($a){Opal.slice.call(arguments,0,arguments.length);return nil},$Signal_trap$5.$$arity=-1),function($GC_start$6,$parent_nesting){$GC_start$6=$klass($GC_start$6,null,"GC"),[$GC_start$6].concat($parent_nesting);return Opal.defs($GC_start$6,"$start",$GC_start$6=function(){return nil},$GC_start$6.$$arity=0),nil&&"start"}($nesting[0],$nesting)},Opal.modules["corelib/random/formatter"]=function(Opal){function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}Opal.top;var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$klass=Opal.klass,$module=Opal.module,$send=Opal.send,$range=Opal.range;return Opal.add_stubs(["$_verify_count","$bytes","$encode","$strict_encode64","$random_bytes","$urlsafe_encode64","$split","$hex","$[]=","$-","$[]","$map","$to_proc","$join","$times","$<<","$|","$ord","$/","$abs","$random_float","$raise","$coerce_to!","$flatten","$new","$random_number","$length","$include","$extend"]),function(self,$nesting){self=$klass(self,null,"Random"),$nesting=[self].concat($nesting);return function($Formatter_alphanumeric$9,$Formatter_random_number$8){var $nesting=[$Formatter_alphanumeric$9=$module($Formatter_alphanumeric$9,"Formatter")].concat($Formatter_random_number$8);Opal.def($Formatter_alphanumeric$9,"$hex",$Formatter_random_number$8=function(count){null==count&&(count=nil),count=$$($nesting,"Random").$_verify_count(count);for(var bytes=this.$bytes(count),out="",i=0;i<count;i++)out+=bytes.charCodeAt(i).toString(16).padStart(2,"0");return out.$encode("US-ASCII")},$Formatter_random_number$8.$$arity=-1),Opal.def($Formatter_alphanumeric$9,"$random_bytes",$Formatter_random_number$8=function(count){return null==count&&(count=nil),this.$bytes(count)},$Formatter_random_number$8.$$arity=-1),Opal.def($Formatter_alphanumeric$9,"$base64",$Formatter_random_number$8=function(count){return null==count&&(count=nil),$$($nesting,"Base64").$strict_encode64(this.$random_bytes(count)).$encode("US-ASCII")},$Formatter_random_number$8.$$arity=-1),Opal.def($Formatter_alphanumeric$9,"$urlsafe_base64",$Formatter_random_number$8=function(count,padding){return null==count&&(count=nil),null==padding&&(padding=!1),$$($nesting,"Base64").$urlsafe_encode64(this.$random_bytes(count),padding).$encode("US-ASCII")},$Formatter_random_number$8.$$arity=-1),Opal.def($Formatter_alphanumeric$9,"$uuid",$Formatter_random_number$8=function(){var str=nil,str=this.$hex(16).$split(""),$writer=[12,"4"];return $send(str,"[]=",Opal.to_a($writer)),$rb_minus($writer.length,1),$writer=[16,(3&parseInt(str["$[]"](16),16)|8).toString(16)],$send(str,"[]=",Opal.to_a($writer)),$rb_minus($writer.length,1),str=[str["$[]"]($range(0,8,!0)),str["$[]"]($range(8,12,!0)),str["$[]"]($range(12,16,!0)),str["$[]"]($range(16,20,!0)),str["$[]"]($range(20,32,!0))],(str=$send(str,"map",[],"join".$to_proc())).$join("-")},$Formatter_random_number$8.$$arity=0),Opal.def($Formatter_alphanumeric$9,"$random_float",$Formatter_random_number$8=function(){var $$7,lhs,rhs,bs=nil,num=nil,bs=this.$bytes(4),num=0;return $send(4,"times",[],(($$7=function(i){null==$$7.$$s||$$7.$$s;return null==i&&(i=nil),num=(num=num["$<<"](8))["$|"](bs["$[]"](i).$ord())}).$$s=this,$$7.$$arity=1,$$7)),lhs=num.$abs(),rhs=2147483647,"number"==typeof lhs&&"number"==typeof rhs?lhs/rhs:lhs["$/"](rhs)},$Formatter_random_number$8.$$arity=0),Opal.def($Formatter_alphanumeric$9,"$random_number",$Formatter_random_number$8=function(limit){var self=this;function randomFloat(){return self.$random_float()}function randomInt(max){return Math.floor(randomFloat()*max)}return null==limit?randomFloat():limit.$$is_range?function(){var min=limit.begin,max=limit.end;if(min===nil||max===nil)return nil;var length=max-min;return length<0?nil:0===length?min:(max%1!=0||min%1!=0||limit.excl||length++,randomInt(length)+min)}():limit.$$is_number?(limit<=0&&self.$raise($$($nesting,"ArgumentError"),"invalid argument - "+limit),limit%1==0?randomInt(limit):randomFloat()*limit):((limit=$$($nesting,"Opal")["$coerce_to!"](limit,$$($nesting,"Integer"),"to_int"))<=0&&self.$raise($$($nesting,"ArgumentError"),"invalid argument - "+limit),randomInt(limit))},$Formatter_random_number$8.$$arity=-1),Opal.def($Formatter_alphanumeric$9,"$alphanumeric",$Formatter_alphanumeric$9=function(count){var $$10,map=nil;return null==count&&(count=nil),count=$$($nesting,"Random").$_verify_count(count),map=$send([$range("0","9",!1),$range("a","z",!1),$range("A","Z",!1)],"map",[],"to_a".$to_proc()).$flatten(),$send($$($nesting,"Array"),"new",[count],(($$10=function(i){var self=null==$$10.$$s?this:$$10.$$s;return null==i&&(i=nil),map["$[]"](self.$random_number(map.$length()))}).$$s=this,$$10.$$arity=1,$$10)).$join()},$Formatter_alphanumeric$9.$$arity=-1)}($nesting[0],$nesting),self.$include($$$($$($nesting,"Random"),"Formatter")),self.$extend($$$($$($nesting,"Random"),"Formatter"))}($nesting[0],$nesting)},Opal.modules["corelib/random"]=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$falsy=Opal.falsy,$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send;return Opal.add_stubs(["$attr_reader","$to_int","$raise","$new_seed","$coerce_to!","$reseed","$rand","$seed","$bytes","$===","$==","$state","$_verify_count","$encode","$join","$new","$chr","$random_number","$random_float","$const_defined?","$const_set"]),function($Random_generator$eq$15,$Random_random_float$14){var $Random_generator$eq$15=$klass($Random_generator$eq$15,null,"Random"),$nesting=[$Random_generator$eq$15].concat($Random_random_float$14);return $Random_generator$eq$15.$attr_reader("seed","state"),Opal.defs($Random_generator$eq$15,"$_verify_count",$Random_random_float$14=function(count){return $falsy(count)&&(count=16),"number"!=typeof count&&(count=count.$to_int()),count<0&&this.$raise($$($nesting,"ArgumentError"),"negative string size (or size too big)"),count=Math.floor(count)},$Random_random_float$14.$$arity=1),Opal.def($Random_generator$eq$15,"$initialize",$Random_random_float$14=function(seed){return null==seed&&(seed=$$($nesting,"Random").$new_seed()),seed=$$($nesting,"Opal")["$coerce_to!"](seed,$$($nesting,"Integer"),"to_int"),this.state=seed,this.$reseed(seed)},$Random_random_float$14.$$arity=-1),Opal.def($Random_generator$eq$15,"$reseed",$Random_random_float$14=function(seed){return this.seed=seed,this.$rng=Opal.$$rand.reseed(seed)},$Random_random_float$14.$$arity=1),Opal.defs($Random_generator$eq$15,"$new_seed",$Random_random_float$14=function(){return Opal.$$rand.new_seed()},$Random_random_float$14.$$arity=0),Opal.defs($Random_generator$eq$15,"$rand",$Random_random_float$14=function(limit){return $$($nesting,"DEFAULT").$rand(limit)},$Random_random_float$14.$$arity=-1),Opal.defs($Random_generator$eq$15,"$srand",$Random_random_float$14=function(n){var previous_seed;return null==n&&(n=$$($nesting,"Random").$new_seed()),n=$$($nesting,"Opal")["$coerce_to!"](n,$$($nesting,"Integer"),"to_int"),previous_seed=$$($nesting,"DEFAULT").$seed(),$$($nesting,"DEFAULT").$reseed(n),previous_seed},$Random_random_float$14.$$arity=-1),Opal.defs($Random_generator$eq$15,"$urandom",$Random_random_float$14=function(size){return $$$("::","SecureRandom").$bytes(size)},$Random_random_float$14.$$arity=1),Opal.def($Random_generator$eq$15,"$==",$Random_random_float$14=function(other){var $ret_or_1;return!!$truthy($$($nesting,"Random")["$==="](other))&&($truthy($ret_or_1=this.$seed()["$=="](other.$seed()))?this.$state()["$=="](other.$state()):$ret_or_1)},$Random_random_float$14.$$arity=1),Opal.def($Random_generator$eq$15,"$bytes",$Random_random_float$14=function(length){var $$10;return length=$$($nesting,"Random").$_verify_count(length),$send($$($nesting,"Array"),"new",[length],(($$10=function(){return(null==$$10.$$s?this:$$10.$$s).$rand(255).$chr()}).$$s=this,$$10.$$arity=0,$$10)).$join().$encode("ASCII-8BIT")},$Random_random_float$14.$$arity=1),Opal.defs($Random_generator$eq$15,"$bytes",$Random_random_float$14=function(length){return $$($nesting,"DEFAULT").$bytes(length)},$Random_random_float$14.$$arity=1),Opal.def($Random_generator$eq$15,"$rand",$Random_random_float$14=function(limit){return this.$random_number(limit)},$Random_random_float$14.$$arity=-1),Opal.def($Random_generator$eq$15,"$random_float",$Random_random_float$14=function(){return this.state++,Opal.$$rand.rand(this.$rng)},$Random_random_float$14.$$arity=0),Opal.defs($Random_generator$eq$15,"$random_float",$Random_random_float$14=function(){return $$($nesting,"DEFAULT").$random_float()},$Random_random_float$14.$$arity=0),Opal.defs($Random_generator$eq$15,"$generator=",$Random_generator$eq$15=function(generator){return Opal.$$rand=generator,$truthy(this["$const_defined?"]("DEFAULT"))?$$($nesting,"DEFAULT").$reseed():this.$const_set("DEFAULT",this.$new(this.$new_seed()))},$Random_generator$eq$15.$$arity=1),nil&&"generator="}($nesting[0],$nesting)},Opal.modules["corelib/random/mersenne_twister"]=function(Opal){Opal.top;var N,M,TWIST,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$klass=Opal.klass,$send=Opal.send,mersenne_twister=nil;function genrand_int32(y){return--y.left<=0&&function(mt){var j,p=0,_p=mt.state;for(mt.left=N,mt.next=0,j=N-M+1;--j;p++)_p[p]=_p[p+M]^TWIST(_p[p+0],_p[p+1]);for(j=M;--j;p++)_p[p]=_p[p+(M-N)]^TWIST(_p[p+0],_p[p+1]);_p[p]=_p[p+(M-N)]^TWIST(_p[p+0],_p[0])}(y),y=y.state[y.next++],y^=y>>>11,y^=y<<7&2636928640,y^=y<<15&4022730752,(y^=y>>>18)>>>0}return Opal.add_stubs(["$generator=","$-"]),N=624,M=397,TWIST=function(u,v){return(2147483648&u|2147483647&v)>>>1^(1&v?2567483615:0)},mersenne_twister={genrand_real:function(mt){return function(a,b){return(67108864*(a>>>=5)+(b>>>=6))*(1/9007199254740992)}(genrand_int32(mt),genrand_int32(mt))},init:function(s){var mt={left:0,next:N,state:new Array(N)};return function(mt,s){var j;for(mt.state[0]=s>>>0,j=1;j<N;j++)mt.state[j]=1812433253*(mt.state[j-1]^mt.state[j-1]>>30>>>0)+j,mt.state[j]&=4294967295;mt.left=1,mt.next=N}(mt,s),mt}},function($nesting,lhs){var rhs=$klass($nesting,null,"Random"),$nesting=[rhs].concat(lhs),lhs=nil,MAX_INT=Number.MAX_SAFE_INTEGER||Math.pow(2,53)-1;return Opal.const_set($nesting[0],"MERSENNE_TWISTER_GENERATOR",{new_seed:function(){return Math.round(Math.random()*MAX_INT)},reseed:function(seed){return mersenne_twister.init(seed)},rand:function(mt){return mersenne_twister.genrand_real(mt)}}),lhs=[$$($nesting,"MERSENNE_TWISTER_GENERATOR")],$send(rhs,"generator=",Opal.to_a(lhs)),lhs[rhs=1,"number"==typeof(lhs=lhs.length)&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)]}($nesting[0],$nesting)},Opal.modules["corelib/unsupported"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$klass=Opal.klass,$module=Opal.module,$alias=Opal.alias;Opal.add_stubs(["$raise","$warn","$%"]);var $private$36,$Kernel_freeze$24,ERROR,warnings={};function handle_unsupported_feature(message){switch(Opal.config.unsupported_features_severity){case"error":$$($nesting,"Kernel").$raise($$($nesting,"NotImplementedError"),message);break;case"warning":!void(warnings[string=message]||(warnings[string]=!0,self.$warn(string)))}var string}return function($String_unicode_normalize$excl$23,$String_encode$excl$22){var $nesting=[$String_unicode_normalize$excl$23=$klass($String_unicode_normalize$excl$23,null,"String")].concat($String_encode$excl$22),ERROR="String#%s not supported. 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this.$raise($$($nesting,"NotImplementedError"),ERROR["$%"]("next!"))},$String_encode$excl$22.$$arity=-1),Opal.def($String_unicode_normalize$excl$23,"$reverse!",$String_encode$excl$22=function($a){Opal.slice.call(arguments,0,arguments.length);return this.$raise($$($nesting,"NotImplementedError"),ERROR["$%"]("reverse!"))},$String_encode$excl$22.$$arity=-1),Opal.def($String_unicode_normalize$excl$23,"$slice!",$String_encode$excl$22=function($a){Opal.slice.call(arguments,0,arguments.length);return this.$raise($$($nesting,"NotImplementedError"),ERROR["$%"]("slice!"))},$String_encode$excl$22.$$arity=-1),Opal.def($String_unicode_normalize$excl$23,"$squeeze!",$String_encode$excl$22=function($a){Opal.slice.call(arguments,0,arguments.length);return this.$raise($$($nesting,"NotImplementedError"),ERROR["$%"]("squeeze!"))},$String_encode$excl$22.$$arity=-1),Opal.def($String_unicode_normalize$excl$23,"$strip!",$String_encode$excl$22=function($a){Opal.slice.call(arguments,0,arguments.length);return this.$raise($$($nesting,"NotImplementedError"),ERROR["$%"]("strip!"))},$String_encode$excl$22.$$arity=-1),Opal.def($String_unicode_normalize$excl$23,"$sub!",$String_encode$excl$22=function($a){Opal.slice.call(arguments,0,arguments.length);return this.$raise($$($nesting,"NotImplementedError"),ERROR["$%"]("sub!"))},$String_encode$excl$22.$$arity=-1),Opal.def($String_unicode_normalize$excl$23,"$succ!",$String_encode$excl$22=function($a){Opal.slice.call(arguments,0,arguments.length);return this.$raise($$($nesting,"NotImplementedError"),ERROR["$%"]("succ!"))},$String_encode$excl$22.$$arity=-1),Opal.def($String_unicode_normalize$excl$23,"$swapcase!",$String_encode$excl$22=function($a){Opal.slice.call(arguments,0,arguments.length);return this.$raise($$($nesting,"NotImplementedError"),ERROR["$%"]("swapcase!"))},$String_encode$excl$22.$$arity=-1),Opal.def($String_unicode_normalize$excl$23,"$tr!",$String_encode$excl$22=function($a){Opal.slice.call(arguments,0,arguments.length);return this.$raise($$($nesting,"NotImplementedError"),ERROR["$%"]("tr!"))},$String_encode$excl$22.$$arity=-1),Opal.def($String_unicode_normalize$excl$23,"$tr_s!",$String_encode$excl$22=function($a){Opal.slice.call(arguments,0,arguments.length);return this.$raise($$($nesting,"NotImplementedError"),ERROR["$%"]("tr_s!"))},$String_encode$excl$22.$$arity=-1),Opal.def($String_unicode_normalize$excl$23,"$upcase!",$String_encode$excl$22=function($a){Opal.slice.call(arguments,0,arguments.length);return this.$raise($$($nesting,"NotImplementedError"),ERROR["$%"]("upcase!"))},$String_encode$excl$22.$$arity=-1),Opal.def($String_unicode_normalize$excl$23,"$prepend",$String_encode$excl$22=function($a){Opal.slice.call(arguments,0,arguments.length);return this.$raise($$($nesting,"NotImplementedError"),ERROR["$%"]("prepend"))},$String_encode$excl$22.$$arity=-1),Opal.def($String_unicode_normalize$excl$23,"$[]=",$String_encode$excl$22=function($a){Opal.slice.call(arguments,0,arguments.length);return 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this.$raise($$($nesting,"NotImplementedError"),ERROR["$%"]("unicode_normalize!"))},$String_unicode_normalize$excl$23.$$arity=-1)}($nesting[0],$nesting),[$private$36=$module($private$36=($Kernel_freeze$24=$nesting)[0],"Kernel")].concat($Kernel_freeze$24),ERROR="Object freezing is not supported by Opal",Opal.def($private$36,"$freeze",$Kernel_freeze$24=function(){return handle_unsupported_feature(ERROR),this},$Kernel_freeze$24.$$arity=0),Opal.def($private$36,"$frozen?",$private$36=function(){return handle_unsupported_feature(ERROR),!1},$private$36.$$arity=0),function($Kernel_tainted$ques$28,$Kernel_untaint$27){var ERROR=([$Kernel_tainted$ques$28=$module($Kernel_tainted$ques$28,"Kernel")].concat($Kernel_untaint$27),"Object tainting is not supported by Opal");Opal.def($Kernel_tainted$ques$28,"$taint",$Kernel_untaint$27=function(){return handle_unsupported_feature(ERROR),this},$Kernel_untaint$27.$$arity=0),Opal.def($Kernel_tainted$ques$28,"$untaint",$Kernel_untaint$27=function(){return 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$set_proto(self,klass.$$prototype),self}:function(){},name&&name!==nil&&$prop(constructor,"displayName","::"+name),$prop(klass=constructor,"$$name",name),$prop(klass,"$$constructor",constructor),$prop(klass,"$$prototype",constructor.prototype),$prop(klass,"$$const",{}),$prop(klass,"$$is_class",!0),$prop(klass,"$$is_a_module",!0),$prop(klass,"$$super",superclass),$prop(klass,"$$cvars",{}),$prop(klass,"$$own_included_modules",[]),$prop(klass,"$$own_prepended_modules",[]),$prop(klass,"$$ancestors",[]),$prop(klass,"$$ancestors_cache_version",null),$prop(klass,"$$subclasses",[]),$prop(klass.$$prototype,"$$class",klass),Opal.Class&&$set_proto(klass,Opal.Class.prototype),null!=superclass){if($set_proto(klass.$$prototype,superclass.$$prototype),!0!==singleton)if("undefined"!=typeof WeakRef){var i,subclass,rebuilt_subclasses=[];for(i=0;i<superclass.$$subclasses.length;i++)void 0!==(subclass=superclass.$$subclasses[i]).deref()&&rebuilt_subclasses.push(subclass);rebuilt_subclasses.push(new WeakRef(klass)),superclass.$$subclasses=rebuilt_subclasses}else superclass.$$subclasses.push(klass);superclass.$$meta&&Opal.build_class_singleton_class(klass)}return klass},Opal.klass=function(scope,superclass,name){var bridged;if(null==scope||"::"==scope?scope=_Object:scope.$$is_class||scope.$$is_module||(scope=scope.$$class),null!=superclass&&(!superclass.hasOwnProperty||superclass.hasOwnProperty&&!superclass.hasOwnProperty("$$is_class"))){if(!superclass.constructor||"Function"!=superclass.constructor.name)throw Opal.TypeError.$new("superclass must be a Class ("+(superclass.constructor&&(superclass.constructor.name||superclass.constructor.$$name)||typeof superclass)+" given)");bridged=superclass,superclass=_Object}var klass=function(scope,name){var klass=const_get_name(scope,name);if(klass){if(!klass.$$is_class)throw Opal.TypeError.$new(name+" is not a class");return klass}}(scope,name);return klass?(superclass&&function(klass,superclass){if(klass.$$super!==superclass)throw Opal.TypeError.$new("superclass mismatch for class "+klass.$$name)}(klass,superclass),Opal.trace_class&&invoke_tracers_for_class(klass),klass):(null==superclass&&(superclass=_Object),$const_set(scope,name,klass=Opal.allocate_class(name,superclass)),superclass.$inherited&&superclass.$inherited(klass),bridged&&Opal.bridge(bridged,klass),Opal.trace_class&&invoke_tracers_for_class(klass),klass)},Opal.allocate_module=function(name){var constructor=function(){};name&&$prop(constructor,"displayName",name+".$$constructor");var module=constructor;return name&&$prop(constructor,"displayName",name+".constructor"),$prop(module,"$$name",name),$prop(module,"$$prototype",constructor.prototype),$prop(module,"$$const",{}),$prop(module,"$$is_module",!0),$prop(module,"$$is_a_module",!0),$prop(module,"$$cvars",{}),$prop(module,"$$iclasses",[]),$prop(module,"$$own_included_modules",[]),$prop(module,"$$own_prepended_modules",[]),$prop(module,"$$ancestors",[module]),$prop(module,"$$ancestors_cache_version",null),$set_proto(module,Opal.Module.prototype),module},Opal.module=function(scope,name){var module;return null==scope||"::"==scope?scope=_Object:scope.$$is_class||scope.$$is_module||(scope=scope.$$class),module=function(scope,name){var module=const_get_name(scope,name);if(null==module&&scope===_Object&&(module=const_lookup_ancestors(_Object,name)),module&&!module.$$is_module&&module!==_Object)throw Opal.TypeError.$new(name+" is not a module");return module}(scope,name),module?(Opal.trace_class&&invoke_tracers_for_class(module),module):($const_set(scope,name,module=Opal.allocate_module(name)),Opal.trace_class&&invoke_tracers_for_class(module),module)},Opal.get_singleton_class=function(object){return object.$$meta?object.$$meta:object.hasOwnProperty("$$is_class")?Opal.build_class_singleton_class(object):object.hasOwnProperty("$$is_module")?Opal.build_module_singleton_class(object):Opal.build_object_singleton_class(object)},Opal.build_class_singleton_class=function(klass){var superclass,meta;return klass.$$meta?klass.$$meta:(superclass=klass===BasicObject?Class:Opal.get_singleton_class(klass.$$super),$prop(meta=Opal.allocate_class(null,superclass,!0),"$$is_singleton",!0),$prop(meta,"$$singleton_of",klass),$prop(klass,"$$meta",meta),$set_proto(klass,meta.$$prototype),$prop(klass,"$$class",Opal.Class),meta)},Opal.build_module_singleton_class=function(mod){if(mod.$$meta)return mod.$$meta;var meta=Opal.allocate_class(null,Opal.Module,!0);return $prop(meta,"$$is_singleton",!0),$prop(meta,"$$singleton_of",mod),$prop(mod,"$$meta",meta),$set_proto(mod,meta.$$prototype),$prop(mod,"$$class",Opal.Module),meta},Opal.build_object_singleton_class=function(object){var superclass=object.$$class,klass=Opal.allocate_class(nil,superclass,!0);return $prop(klass,"$$is_singleton",!0),$prop(klass,"$$singleton_of",object),delete klass.$$prototype.$$class,$prop(object,"$$meta",klass),$set_proto(object,object.$$meta.$$prototype),klass},Opal.is_method=function(prop){return"$"===prop[0]&&"$"!==prop[1]},Opal.instance_methods=function(mod){for(var exclude=[],results=[],ancestors=Opal.ancestors(mod),i=0,l=ancestors.length;i<l;i++){var proto=ancestors[i].$$prototype;proto.hasOwnProperty("$$dummy")&&(proto=proto.$$define_methods_on);for(var props=Object.getOwnPropertyNames(proto),j=0,ll=props.length;j<ll;j++){var prop=props[j];if(Opal.is_method(prop)){var method_name=prop.slice(1),method=proto[prop];method.$$stub&&-1===exclude.indexOf(method_name)&&exclude.push(method_name),method.$$stub||-1!==results.indexOf(method_name)||-1!==exclude.indexOf(method_name)||results.push(method_name)}}}return results},Opal.own_instance_methods=function(mod){var results=[],proto=mod.$$prototype;proto.hasOwnProperty("$$dummy")&&(proto=proto.$$define_methods_on);for(var props=Object.getOwnPropertyNames(proto),i=0,length=props.length;i<length;i++){var prop=props[i];if(Opal.is_method(prop))if(!proto[prop].$$stub){var method_name=prop.slice(1);results.push(method_name)}}return results},Opal.methods=function(obj){return Opal.instance_methods(obj.$$meta||obj.$$class)},Opal.own_methods=function(obj){return obj.$$meta?Opal.own_instance_methods(obj.$$meta):[]},Opal.receiver_methods=function(obj){var mod=Opal.get_singleton_class(obj),singleton_methods=Opal.own_instance_methods(mod),instance_methods=Opal.own_instance_methods(mod.$$super);return singleton_methods.concat(instance_methods)},Opal.class_variables=function(module){var i,ancestors=Opal.ancestors(module),result={};for(i=ancestors.length-1;i>=0;i--){var ancestor=ancestors[i];for(var cvar in ancestor.$$cvars)result[cvar]=ancestor.$$cvars[cvar]}return result},Opal.class_variable_set=function(module,name,value){var i,ancestors=Opal.ancestors(module);for(i=ancestors.length-2;i>=0;i--){var ancestor=ancestors[i];if($has_own.call(ancestor.$$cvars,name))return ancestor.$$cvars[name]=value,value}return module.$$cvars[name]=value,value},Opal.class_variable_get=function(module,name,tolerant){if($has_own.call(module.$$cvars,name))return module.$$cvars[name];var i,ancestors=Opal.ancestors(module),length=ancestors.length;for(i=0;i<length;i++){var ancestor=ancestors[i];if($has_own.call(ancestor.$$cvars,name))return ancestor.$$cvars[name]}if(!tolerant)throw Opal.NameError.$new("uninitialized class variable "+name+" in "+module.$name());return nil},Opal.append_features=function(module,includer){var module_ancestors=Opal.ancestors(module),iclasses=[];if(-1!==module_ancestors.indexOf(includer))throw Opal.ArgumentError.$new("cyclic include detected");for(var i=0,length=module_ancestors.length;i<length;i++){var iclass=create_iclass(module_ancestors[i]);$prop(iclass,"$$included",!0),iclasses.push(iclass)}var start_chain_after,end_chain_on,includer_ancestors=Opal.ancestors(includer),chain=chain_iclasses(iclasses);if(-1===includer_ancestors.indexOf(module))start_chain_after=includer.$$prototype,end_chain_on=Object.getPrototypeOf(includer.$$prototype);else{for(var parent=includer.$$prototype,module_iclass=Object.getPrototypeOf(parent);null!=module_iclass&&(module_iclass.$$module!==module||!isRoot(module_iclass));)parent=module_iclass,module_iclass=Object.getPrototypeOf(module_iclass);if(module_iclass){for(var next_ancestor=Object.getPrototypeOf(module_iclass);next_ancestor.hasOwnProperty("$$iclass")&&!isRoot(next_ancestor);)next_ancestor=Object.getPrototypeOf(next_ancestor);start_chain_after=parent,end_chain_on=next_ancestor}else start_chain_after=includer.$$prototype,end_chain_on=Object.getPrototypeOf(includer.$$prototype)}$set_proto(start_chain_after,chain.first),$set_proto(chain.last,end_chain_on),includer.$$own_included_modules=function(module){for(var mod,result=[],proto=Object.getPrototypeOf(module.$$prototype);proto&&!proto.hasOwnProperty("$$class");)(mod=protoToModule(proto))&&result.push(mod),proto=Object.getPrototypeOf(proto);return result}(includer),Opal.const_cache_version++},Opal.prepend_features=function(module,prepender){var module_ancestors=Opal.ancestors(module),iclasses=[];if(-1!==module_ancestors.indexOf(prepender))throw Opal.ArgumentError.$new("cyclic prepend detected");for(var i=0,length=module_ancestors.length;i<length;i++){var iclass=create_iclass(module_ancestors[i]);$prop(iclass,"$$prepended",!0),iclasses.push(iclass)}var prepender_iclass,start_chain_after,end_chain_on,chain=chain_iclasses(iclasses),dummy_prepender=prepender.$$prototype,previous_parent=Object.getPrototypeOf(dummy_prepender);if(dummy_prepender.hasOwnProperty("$$dummy")?prepender_iclass=dummy_prepender.$$define_methods_on:(prepender_iclass=create_dummy_iclass(prepender),function(module){for(var proto=module.$$prototype,props=Object.getOwnPropertyNames(proto),i=0;i<props.length;i++){var prop=props[i];Opal.is_method(prop)&&delete proto[prop]}}(prepender),$prop(dummy_prepender,"$$dummy",!0),$prop(dummy_prepender,"$$define_methods_on",prepender_iclass),$set_proto(dummy_prepender,prepender_iclass),$set_proto(prepender_iclass,previous_parent)),-1!==Opal.ancestors(prepender).indexOf(module))throw Opal.RuntimeError.$new("Prepending a module multiple times is not supported");for(start_chain_after=dummy_prepender,end_chain_on=Object.getPrototypeOf(dummy_prepender);null!=end_chain_on&&!end_chain_on.hasOwnProperty("$$root")&&end_chain_on!==prepender_iclass&&end_chain_on.hasOwnProperty("$$iclass");)end_chain_on=Object.getPrototypeOf(end_chain_on);$set_proto(start_chain_after,chain.first),$set_proto(chain.last,end_chain_on),prepender.$$own_prepended_modules=function(module){var mod,result=[],proto=Object.getPrototypeOf(module.$$prototype);if(module.$$prototype.hasOwnProperty("$$dummy"))for(;proto&&proto!==module.$$prototype.$$define_methods_on;)(mod=protoToModule(proto))&&result.push(mod),proto=Object.getPrototypeOf(proto);return result}(prepender),Opal.const_cache_version++},Opal.bridge=function(native_klass,klass){if(native_klass.hasOwnProperty("$$bridge"))throw Opal.ArgumentError.$new("already bridged");$prop(native_klass,"$$bridge",klass),$set_proto(native_klass.prototype,(klass.$$super||Opal.Object).$$prototype),$prop(klass,"$$prototype",native_klass.prototype),$prop(klass.$$prototype,"$$class",klass),$prop(klass,"$$constructor",native_klass),$prop(klass,"$$bridge",!0)},Opal.ancestors=function(module){if(!module)return[];if(module.$$ancestors_cache_version===Opal.const_cache_version)return module.$$ancestors;var i,mods,length,result=[];for(i=0,mods=function(module){return module.$$own_prepended_modules.concat([module]).concat(module.$$own_included_modules)}(module),length=mods.length;i<length;i++)result.push(mods[i]);if(module.$$super)for(i=0,length=(mods=Opal.ancestors(module.$$super)).length;i<length;i++)result.push(mods[i]);return module.$$ancestors_cache_version=Opal.const_cache_version,module.$$ancestors=result,result},Opal.included_modules=function(module){for(var result=[],mod=null,proto=Object.getPrototypeOf(module.$$prototype);proto&&Object.getPrototypeOf(proto);proto=Object.getPrototypeOf(proto))(mod=protoToModule(proto))&&mod.$$is_module&&proto.$$iclass&&proto.$$included&&result.push(mod);return result},Opal.add_stubs=function(stubs){for(var stub,existing_method,proto=Opal.BasicObject.$$prototype,i=0,length=(stubs=stubs.split(",")).length;i<length;i++)(null==(existing_method=proto[stub="$"+stubs[i]])||existing_method.$$stub)&&Opal.add_stub_for(proto,stub)},Opal.add_stub_for=function(prototype,stub){$prop(prototype,stub,Opal.stub_for(stub))},Opal.stub_for=function(method_name){function method_missing_stub(){this.$method_missing.$$p=method_missing_stub.$$p,delete method_missing_stub.$$p;for(var args_ary=new Array(arguments.length),i=0,l=args_ary.length;i<l;i++)args_ary[i]=arguments[i];return this.$method_missing.apply(this,[method_name.slice(1)].concat(args_ary))}return method_missing_stub.$$stub=!0,method_missing_stub},Opal.ac=function(actual,expected,object,meth){var inspect="";throw object.$$is_a_module?inspect+=object.$$name+".":inspect+=object.$$class.$$name+"#",inspect+=meth,Opal.ArgumentError.$new("["+inspect+"] wrong number of arguments (given "+actual+", expected "+expected+")")},Opal.block_ac=function(actual,expected,context){var inspect="`block in "+context+"'";throw Opal.ArgumentError.$new(inspect+": wrong number of arguments (given "+actual+", expected "+expected+")")},Opal.find_super=function(obj,mid,current_func,defcheck,allow_stubs){for(var ancestors,super_method,jsid="$"+mid,i=(ancestors=obj.hasOwnProperty("$$meta")?Opal.ancestors(obj.$$meta):Opal.ancestors(obj.$$class)).indexOf(current_func.$$owner)+1;i<ancestors.length;i++){var proto=ancestors[i].$$prototype;if(proto.hasOwnProperty("$$dummy")&&(proto=proto.$$define_methods_on),proto.hasOwnProperty(jsid)){super_method=proto[jsid];break}}if(!defcheck&&super_method&&super_method.$$stub&&obj.$method_missing.$$pristine)throw Opal.NoMethodError.$new("super: no superclass method `"+mid+"' for "+obj,mid);return super_method.$$stub&&!allow_stubs?null:super_method},Opal.find_block_super=function(obj,jsid,current_func,defcheck,implicit){var call_jsid=jsid;if(!current_func)throw Opal.RuntimeError.$new("super called outside of method");if(implicit&&current_func.$$define_meth)throw Opal.RuntimeError.$new("implicit argument passing of super from method defined by define_method() is not supported. Specify all arguments explicitly");return current_func.$$def&&(call_jsid=current_func.$$jsid),Opal.find_super(obj,call_jsid,current_func,defcheck)},Opal.find_super_dispatcher=Opal.find_super,Opal.find_iter_super_dispatcher=Opal.find_block_super,Opal.ret=function(val){throw Opal.returner.$v=val,Opal.returner},Opal.brk=function(val,breaker){throw breaker.$v=val,breaker},Opal.new_brk=function(){return new Error("unexpected break")},Opal.yield1=function(block,arg){if("function"!=typeof block)throw Opal.LocalJumpError.$new("no block given");var has_mlhs=block.$$has_top_level_mlhs_arg,has_trailing_comma=block.$$has_trailing_comma_in_args;return(block.length>1||(has_mlhs||has_trailing_comma)&&1===block.length)&&(arg=Opal.to_ary(arg)),(block.length>1||has_trailing_comma&&1===block.length)&&arg.$$is_array?block.apply(null,arg):block(arg)},Opal.yieldX=function(block,args){if("function"!=typeof block)throw Opal.LocalJumpError.$new("no block given");if(block.length>1&&1===args.length&&args[0].$$is_array)return block.apply(null,args[0]);if(!args.$$is_array){for(var args_ary=new Array(args.length),i=0,l=args_ary.length;i<l;i++)args_ary[i]=args[i];return block.apply(null,args_ary)}return block.apply(null,args)},Opal.rescue=function(exception,candidates){for(var i=0;i<candidates.length;i++){var candidate=candidates[i];if(candidate.$$is_array){var result=Opal.rescue(exception,candidate);if(result)return result}else{if(candidate===Opal.JS.Error)return candidate;if(candidate["$==="](exception))return candidate}}return null},Opal.is_a=function(object,klass){return null!=klass&&object.$$meta===klass||object.$$class===klass||(object.$$is_number&&klass.$$is_number_class?!klass.$$is_integer_class||object%1==0:-1!==Opal.ancestors(object.$$is_class?Opal.get_singleton_class(object):object.$$meta||object.$$class).indexOf(klass))},Opal.to_hash=function(value){if(value.$$is_hash)return value;if(value["$respond_to?"]("to_hash",!0)){var hash=value.$to_hash();if(hash.$$is_hash)return hash;throw Opal.TypeError.$new("Can't convert "+value.$$class+" to Hash ("+value.$$class+"#to_hash gives "+hash.$$class+")")}throw Opal.TypeError.$new("no implicit conversion of "+value.$$class+" into Hash")},Opal.to_ary=function(value){if(value.$$is_array)return value;if(value["$respond_to?"]("to_ary",!0)){var ary=value.$to_ary();if(ary===nil)return[value];if(ary.$$is_array)return ary;throw Opal.TypeError.$new("Can't convert "+value.$$class+" to Array ("+value.$$class+"#to_ary gives "+ary.$$class+")")}return[value]},Opal.to_a=function(value){if(value.$$is_array)return value.slice();if(value["$respond_to?"]("to_a",!0)){var ary=value.$to_a();if(ary===nil)return[value];if(ary.$$is_array)return ary;throw Opal.TypeError.$new("Can't convert "+value.$$class+" to Array ("+value.$$class+"#to_a gives "+ary.$$class+")")}return[value]},Opal.extract_kwargs=function(parameters){var kwargs=parameters[parameters.length-1];return null!=kwargs&&Opal.respond_to(kwargs,"$to_hash",!0)?($splice.call(parameters,parameters.length-1),kwargs.$to_hash()):Opal.hash2([],{})},Opal.kwrestargs=function(given_args,used_args){var key,keys=[],map={},given_map=given_args.$$smap;for(key in given_map)used_args[key]||(keys.push(key),map[key]=given_map[key]);return Opal.hash2(keys,map)},Opal.send=function(recv,method,args,block,blockopts){var body;if("function"==typeof method)body=method,method=null;else{if("string"!=typeof method)throw Opal.NameError.$new("Passed method should be a string or a function");body=recv["$"+method]}return Opal.send2(recv,body,method,args,block,blockopts)},Opal.send2=function(recv,body,method,args,block,blockopts){return null==body&&null!=method&&recv.$method_missing&&(body=recv.$method_missing,args=[method].concat(args)),apply_blockopts(block,blockopts),"function"==typeof block&&(body.$$p=block),body.apply(recv,args)},Opal.refined_send=function(refinement_groups,recv,method,args,block,blockopts){var i,j,k,ancestors,ancestor,refinements,refinement,refine_modules,refine_module,body;for(ancestors=recv.hasOwnProperty("$$meta")?Opal.ancestors(recv.$$meta):Opal.ancestors(recv.$$class),i=0;i<ancestors.length;i++)for(ancestor=Opal.id(ancestors[i]),j=0;j<refinement_groups.length;j++)for(k=(refinements=refinement_groups[j]).length-1;k>=0;k--)if(void 0!==(refinement=refinements[k]).$$refine_modules&&void 0!==(refine_modules=refinement.$$refine_modules)[ancestor]&&void 0!==(refine_module=refine_modules[ancestor]).$$prototype["$"+method])return body=refine_module.$$prototype["$"+method],Opal.send2(recv,body,method,args,block,blockopts);return Opal.send(recv,method,args,block,blockopts)},Opal.lambda=function(block,blockopts){return block.$$is_lambda=!0,apply_blockopts(block,blockopts),block},Opal.def=function(obj,jsid,body,blockopts){return apply_blockopts(body,blockopts),obj===Opal.top?Opal.defn(Opal.Object,jsid,body):!obj.$$eval&&obj.$$is_a_module?Opal.defn(obj,jsid,body):Opal.defs(obj,jsid,body)},Opal.defn=function(module,jsid,body){body.displayName=jsid,body.$$owner=module;var name=jsid.substr(1),proto=module.$$prototype;if(proto.hasOwnProperty("$$dummy")&&(proto=proto.$$define_methods_on),$prop(proto,jsid,body),module.$$is_module){module.$$module_function&&Opal.defs(module,jsid,body);for(var i=0,iclasses=module.$$iclasses,length=iclasses.length;i<length;i++){$prop(iclasses[i],jsid,body)}}var singleton_of=module.$$singleton_of;return!module.$method_added||module.$method_added.$$stub||singleton_of?singleton_of&&singleton_of.$singleton_method_added&&!singleton_of.$singleton_method_added.$$stub&&singleton_of.$singleton_method_added(name):module.$method_added(name),name},Opal.defs=function(obj,jsid,body,blockopts){if(apply_blockopts(body,blockopts),obj.$$is_string||obj.$$is_number)throw Opal.TypeError.$new("can't define singleton");return Opal.defn(Opal.get_singleton_class(obj),jsid,body)},Opal.rdef=function(obj,jsid){if(!$has_own.call(obj.$$prototype,jsid))throw Opal.NameError.$new("method '"+jsid.substr(1)+"' not defined in "+obj.$name());delete obj.$$prototype[jsid],obj.$$is_singleton?obj.$$prototype.$singleton_method_removed&&!obj.$$prototype.$singleton_method_removed.$$stub&&obj.$$prototype.$singleton_method_removed(jsid.substr(1)):obj.$method_removed&&!obj.$method_removed.$$stub&&obj.$method_removed(jsid.substr(1))},Opal.udef=function(obj,jsid){if(!obj.$$prototype[jsid]||obj.$$prototype[jsid].$$stub)throw Opal.NameError.$new("method '"+jsid.substr(1)+"' not defined in "+obj.$name());Opal.add_stub_for(obj.$$prototype,jsid),obj.$$is_singleton?obj.$$prototype.$singleton_method_undefined&&!obj.$$prototype.$singleton_method_undefined.$$stub&&obj.$$prototype.$singleton_method_undefined(jsid.substr(1)):obj.$method_undefined&&!obj.$method_undefined.$$stub&&obj.$method_undefined(jsid.substr(1))},Opal.alias=function(obj,name,old){var body,alias,id="$"+name,old_id="$"+old;if(void 0===obj.$$prototype&&(obj=Opal.Object),body=obj.$$prototype["$"+old],obj.$$eval)return Opal.alias(Opal.get_singleton_class(obj),name,old);if(!is_method_body(body)){for(var ancestor=obj.$$super;"function"!=typeof body&&ancestor;)body=ancestor[old_id],ancestor=ancestor.$$super;if(!is_method_body(body)&&obj.$$is_module&&(body=Opal.Object.$$prototype[old_id]),!is_method_body(body))throw Opal.NameError.$new("undefined method `"+old+"' for class `"+obj.$name()+"'")}body.$$alias_of&&(body=body.$$alias_of),alias=function(){var args,i,ii,block=alias.$$p;for(args=new Array(arguments.length),i=0,ii=arguments.length;i<ii;i++)args[i]=arguments[i];return delete alias.$$p,Opal.send(this,body,args,block)};try{Object.defineProperty(alias,"length",{value:body.length})}catch(e){}return alias.displayName=name,alias.$$arity=body.$$arity,alias.$$parameters=body.$$parameters,alias.$$source_location=body.$$source_location,alias.$$alias_of=body,alias.$$alias_name=name,Opal.defn(obj,id,alias),obj},Opal.alias_gvar=function(new_name,old_name){return Object.defineProperty(Opal.gvars,new_name,{configurable:!0,enumerable:!0,get:function(){return Opal.gvars[old_name]},set:function(new_value){Opal.gvars[old_name]=new_value}}),nil},Opal.alias_native=function(obj,name,native_name){var id="$"+name,body=obj.$$prototype[native_name];if("function"!=typeof body||body.$$stub)throw Opal.NameError.$new("undefined native method `"+native_name+"' for class `"+obj.$name()+"'");return 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self=Opal.top,nil=Opal.nil,$$$=Opal.$$$,$klass=Opal.klass,$truthy=Opal.truthy,$Kernel=Opal.Kernel,$def=Opal.def,$to_ary=Opal.to_ary,$eqeqeq=Opal.eqeqeq,$rb_minus=Opal.rb_minus,$rb_times=Opal.rb_times,$rb_lt=Opal.rb_lt,$eqeq=Opal.eqeq,$rb_divide=Opal.rb_divide,$Opal=Opal.Opal,$hash2=Opal.hash2,$not=Opal.not,$send=Opal.send,$rb_ge=Opal.rb_ge,$rb_le=Opal.rb_le,$rb_plus=Opal.rb_plus,$rb_gt=Opal.rb_gt,$alias=Opal.alias;return Opal.add_stubs("require,include,instance_of?,class,Float,respond_to?,coerce,__send__,===,raise,equal?,-,*,div,<,-@,ceil,to_f,denominator,to_r,==,floor,/,%,Complex,zero?,numerator,abs,arg,coerce_to!,round,<=>,compare,is_a?,!,new,enum_for,to_proc,negative?,>=,<=,+,to_i,truncate,>"),self.$require("corelib/comparable"),function($base,$super){var self=$klass("::",null,"Numeric");return self.$include($$$("Comparable")),$def(self,"$coerce",(function(other){return 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Opal.add_stubs("require"),$Object.$require("opal/base"),$Object.$require("corelib/nil"),$Object.$require("corelib/boolean"),$Object.$require("corelib/string"),$Object.$require("corelib/comparable"),$Object.$require("corelib/enumerable"),$Object.$require("corelib/enumerator"),$Object.$require("corelib/array"),$Object.$require("corelib/hash"),$Object.$require("corelib/number"),$Object.$require("corelib/range"),$Object.$require("corelib/proc"),$Object.$require("corelib/method"),$Object.$require("corelib/regexp"),$Object.$require("corelib/variables"),$Object.$require("corelib/io"),$Object.$require("opal/regexp_anchors")},Opal.modules["corelib/kernel/format"]=function(Opal){var self,nil=Opal.nil,$$$=Opal.$$$,$coerce_to=Opal.coerce_to,$module=Opal.module,$truthy=Opal.truthy,$eqeq=Opal.eqeq,$Opal=Opal.Opal,$Kernel=Opal.Kernel,$gvars=Opal.gvars,$def=Opal.def,$alias=Opal.alias;return Opal.add_stubs("respond_to?,[],==,length,coerce_to?,nil?,to_a,raise,to_int,fetch,Integer,Float,to_ary,to_str,inspect,to_s"),self=$module("::","Kernel"),$def(self,"$format",(function(format_string,$a){var $post_args,args,ary=nil;null==$gvars.DEBUG&&($gvars.DEBUG=nil),$post_args=Opal.slice.call(arguments,1),$eqeq((args=$post_args).$length(),1)&&$truthy(args["$[]"](0)["$respond_to?"]("to_ary"))&&(ary=$Opal["$coerce_to?"](args["$[]"](0),$$$("Array"),"to_ary"),$truthy(ary["$nil?"]())||(args=ary.$to_a()));var end_slice,i,arg,str,exponent,width,precision,tmp_num,hash_parameter_key,closing_brace_char,base_number,base_prefix,base_neg_zero_regex,base_neg_zero_digit,next_arg,flags,result="",begin_slice=0,len=format_string.length,seq_arg_num=1,pos_arg_num=0,FNONE=0,FSHARP=1,FMINUS=2,FPLUS=4,FZERO=8,FSPACE=16,FWIDTH=32,FPREC=64,FPREC0=128;function CHECK_FOR_FLAGS(){flags&FWIDTH&&$Kernel.$raise($$$("ArgumentError"),"flag after width"),flags&FPREC0&&$Kernel.$raise($$$("ArgumentError"),"flag after precision")}function CHECK_FOR_WIDTH(){flags&FWIDTH&&$Kernel.$raise($$$("ArgumentError"),"width given twice"),flags&FPREC0&&$Kernel.$raise($$$("ArgumentError"),"width after precision")}function GET_NTH_ARG(num){return num>=args.length&&$Kernel.$raise($$$("ArgumentError"),"too few arguments"),args[num]}function GET_NEXT_ARG(){switch(pos_arg_num){case-1:$Kernel.$raise($$$("ArgumentError"),"unnumbered("+seq_arg_num+") mixed with numbered");case-2:$Kernel.$raise($$$("ArgumentError"),"unnumbered("+seq_arg_num+") mixed with named")}return GET_NTH_ARG((pos_arg_num=seq_arg_num++)-1)}function GET_POS_ARG(num){return pos_arg_num>0&&$Kernel.$raise($$$("ArgumentError"),"numbered("+num+") after unnumbered("+pos_arg_num+")"),-2===pos_arg_num&&$Kernel.$raise($$$("ArgumentError"),"numbered("+num+") after named"),num<1&&$Kernel.$raise($$$("ArgumentError"),"invalid index - "+num+"$"),pos_arg_num=-1,GET_NTH_ARG(num-1)}function GET_ARG(){return void 0===next_arg?GET_NEXT_ARG():next_arg}function READ_NUM(label){for(var num,str="";;i++){if(i===len&&$Kernel.$raise($$$("ArgumentError"),"malformed format string - %*[0-9]"),format_string.charCodeAt(i)<48||format_string.charCodeAt(i)>57)return i--,(num=parseInt(str,10)||0)>2147483647&&$Kernel.$raise($$$("ArgumentError"),label+" too big"),num;str+=format_string.charAt(i)}}function READ_NUM_AFTER_ASTER(label){var arg,num=READ_NUM(label);return"$"===format_string.charAt(i+1)?(i++,arg=GET_POS_ARG(num)):arg=GET_NEXT_ARG(),arg.$to_int()}for(i=format_string.indexOf("%");-1!==i;i=format_string.indexOf("%",i)){switch(str=void 0,flags=FNONE,width=-1,precision=-1,next_arg=void 0,end_slice=i,i++,format_string.charAt(i)){case"%":begin_slice=i;case"":case"\n":case"\0":i++;continue}format_sequence:for(;i<len;i++)switch(format_string.charAt(i)){case" ":CHECK_FOR_FLAGS(),flags|=FSPACE;continue format_sequence;case"#":CHECK_FOR_FLAGS(),flags|=FSHARP;continue format_sequence;case"+":CHECK_FOR_FLAGS(),flags|=FPLUS;continue format_sequence;case"-":CHECK_FOR_FLAGS(),flags|=FMINUS;continue format_sequence;case"0":CHECK_FOR_FLAGS(),flags|=FZERO;continue format_sequence;case"1":case"2":case"3":case"4":case"5":case"6":case"7":case"8":case"9":if(tmp_num=READ_NUM("width"),"$"===format_string.charAt(i+1)){if(i+2===len){str="%",i++;break format_sequence}void 0!==next_arg&&$Kernel.$raise($$$("ArgumentError"),"value given twice - %"+tmp_num+"$"),next_arg=GET_POS_ARG(tmp_num),i++}else CHECK_FOR_WIDTH(),flags|=FWIDTH,width=tmp_num;continue format_sequence;case"<":case"{":for(closing_brace_char="<"===format_string.charAt(i)?">":"}",hash_parameter_key="",i++;;i++){if(i===len&&$Kernel.$raise($$$("ArgumentError"),"malformed name - unmatched parenthesis"),format_string.charAt(i)===closing_brace_char){if(pos_arg_num>0&&$Kernel.$raise($$$("ArgumentError"),"named "+hash_parameter_key+" after unnumbered("+pos_arg_num+")"),-1===pos_arg_num&&$Kernel.$raise($$$("ArgumentError"),"named "+hash_parameter_key+" after numbered"),pos_arg_num=-2,void 0!==args[0]&&args[0].$$is_hash||$Kernel.$raise($$$("ArgumentError"),"one hash required"),next_arg=args[0].$fetch(hash_parameter_key),">"===closing_brace_char)continue format_sequence;if(str=next_arg.toString(),-1!==precision&&(str=str.slice(0,precision)),flags&FMINUS)for(;str.length<width;)str+=" ";else for(;str.length<width;)str=" "+str;break format_sequence}hash_parameter_key+=format_string.charAt(i)}case"*":i++,CHECK_FOR_WIDTH(),flags|=FWIDTH,(width=READ_NUM_AFTER_ASTER("width"))<0&&(flags|=FMINUS,width=-width);continue format_sequence;case".":if(flags&FPREC0&&$Kernel.$raise($$$("ArgumentError"),"precision given twice"),flags|=FPREC|FPREC0,precision=0,i++,"*"===format_string.charAt(i)){i++,(precision=READ_NUM_AFTER_ASTER("precision"))<0&&(flags&=~FPREC);continue format_sequence}precision=READ_NUM("precision");continue format_sequence;case"d":case"i":case"u":if((arg=$Kernel.$Integer(GET_ARG()))>=0){for(str=arg.toString();str.length<precision;)str="0"+str;if(flags&FMINUS)for((flags&FPLUS||flags&FSPACE)&&(str=(flags&FPLUS?"+":" ")+str);str.length<width;)str+=" ";else if(flags&FZERO&&-1===precision){for(;str.length<width-(flags&FPLUS||flags&FSPACE?1:0);)str="0"+str;(flags&FPLUS||flags&FSPACE)&&(str=(flags&FPLUS?"+":" ")+str)}else for((flags&FPLUS||flags&FSPACE)&&(str=(flags&FPLUS?"+":" ")+str);str.length<width;)str=" "+str}else{for(str=(-arg).toString();str.length<precision;)str="0"+str;if(flags&FMINUS)for(str="-"+str;str.length<width;)str+=" ";else if(flags&FZERO&&-1===precision){for(;str.length<width-1;)str="0"+str;str="-"+str}else for(str="-"+str;str.length<width;)str=" "+str}break format_sequence;case"b":case"B":case"o":case"x":case"X":switch(format_string.charAt(i)){case"b":case"B":base_number=2,base_prefix="0b",base_neg_zero_regex=/^1+/,base_neg_zero_digit="1";break;case"o":base_number=8,base_prefix="0",base_neg_zero_regex=/^3?7+/,base_neg_zero_digit="7";break;case"x":case"X":base_number=16,base_prefix="0x",base_neg_zero_regex=/^f+/,base_neg_zero_digit="f"}if((arg=$Kernel.$Integer(GET_ARG()))>=0){for(str=arg.toString(base_number);str.length<precision;)str="0"+str;if(flags&FMINUS)for((flags&FPLUS||flags&FSPACE)&&(str=(flags&FPLUS?"+":" ")+str),flags&FSHARP&&0!==arg&&(str=base_prefix+str);str.length<width;)str+=" ";else if(flags&FZERO&&-1===precision){for(;str.length<width-(flags&FPLUS||flags&FSPACE?1:0)-(flags&FSHARP&&0!==arg?base_prefix.length:0);)str="0"+str;flags&FSHARP&&0!==arg&&(str=base_prefix+str),(flags&FPLUS||flags&FSPACE)&&(str=(flags&FPLUS?"+":" ")+str)}else for(flags&FSHARP&&0!==arg&&(str=base_prefix+str),(flags&FPLUS||flags&FSPACE)&&(str=(flags&FPLUS?"+":" ")+str);str.length<width;)str=" "+str}else if(flags&FPLUS||flags&FSPACE){for(str=(-arg).toString(base_number);str.length<precision;)str="0"+str;if(flags&FMINUS)for(flags&FSHARP&&(str=base_prefix+str),str="-"+str;str.length<width;)str+=" ";else if(flags&FZERO&&-1===precision){for(;str.length<width-1-(flags&FSHARP?2:0);)str="0"+str;flags&FSHARP&&(str=base_prefix+str),str="-"+str}else for(flags&FSHARP&&(str=base_prefix+str),str="-"+str;str.length<width;)str=" "+str}else{for(str=(arg>>>0).toString(base_number).replace(base_neg_zero_regex,base_neg_zero_digit);str.length<precision-2;)str=base_neg_zero_digit+str;if(flags&FMINUS)for(str=".."+str,flags&FSHARP&&(str=base_prefix+str);str.length<width;)str+=" ";else if(flags&FZERO&&-1===precision){for(;str.length<width-2-(flags&FSHARP?base_prefix.length:0);)str=base_neg_zero_digit+str;str=".."+str,flags&FSHARP&&(str=base_prefix+str)}else for(str=".."+str,flags&FSHARP&&(str=base_prefix+str);str.length<width;)str=" "+str}format_string.charAt(i)===format_string.charAt(i).toUpperCase()&&(str=str.toUpperCase());break format_sequence;case"f":case"e":case"E":case"g":case"G":if((arg=$Kernel.$Float(GET_ARG()))>=0||isNaN(arg)){if(arg===1/0)str="Inf";else switch(format_string.charAt(i)){case"f":str=arg.toFixed(-1===precision?6:precision);break;case"e":case"E":str=arg.toExponential(-1===precision?6:precision);break;case"g":case"G":str=arg.toExponential(),(exponent=parseInt(str.split("e")[1],10))<-4||exponent>=(-1===precision?6:precision)||(str=arg.toPrecision(-1===precision?flags&FSHARP?6:void 0:precision))}if(flags&FMINUS)for((flags&FPLUS||flags&FSPACE)&&(str=(flags&FPLUS?"+":" ")+str);str.length<width;)str+=" ";else if(flags&FZERO&&arg!==1/0&&!isNaN(arg)){for(;str.length<width-(flags&FPLUS||flags&FSPACE?1:0);)str="0"+str;(flags&FPLUS||flags&FSPACE)&&(str=(flags&FPLUS?"+":" ")+str)}else for((flags&FPLUS||flags&FSPACE)&&(str=(flags&FPLUS?"+":" ")+str);str.length<width;)str=" "+str}else{if(arg===-1/0)str="Inf";else switch(format_string.charAt(i)){case"f":str=(-arg).toFixed(-1===precision?6:precision);break;case"e":case"E":str=(-arg).toExponential(-1===precision?6:precision);break;case"g":case"G":str=(-arg).toExponential(),(exponent=parseInt(str.split("e")[1],10))<-4||exponent>=(-1===precision?6:precision)||(str=(-arg).toPrecision(-1===precision?flags&FSHARP?6:void 0:precision))}if(flags&FMINUS)for(str="-"+str;str.length<width;)str+=" ";else if(flags&FZERO&&arg!==-1/0){for(;str.length<width-1;)str="0"+str;str="-"+str}else for(str="-"+str;str.length<width;)str=" "+str}format_string.charAt(i)!==format_string.charAt(i).toUpperCase()||arg===1/0||arg===-1/0||isNaN(arg)||(str=str.toUpperCase()),str=str.replace(/([eE][-+]?)([0-9])$/,"$10$2");break format_sequence;case"a":case"A":$Kernel.$raise($$$("NotImplementedError"),"`A` and `a` format field types are not implemented in 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isFloat()?(numerator=parseFloat(cutFloat()),"/"===str[0]?(str=str.slice(1),isFloat()?(denominator=parseFloat(cutFloat()),$Kernel.$Rational(numerator,denominator)):$Kernel.$Rational(numerator,1)):$Kernel.$Rational(numerator,1)):$Kernel.$Rational(0,1)}),1),$alias(self,"divide","/"),$alias(self,"quo","/")}(0,$$$("Numeric"))},Opal.modules["corelib/time"]=function(Opal){var self=Opal.top,nil=Opal.nil,$$$=Opal.$$$,$slice=Opal.slice,$klass=Opal.klass,$Kernel=Opal.Kernel,$Opal=Opal.Opal,$defs=Opal.defs,$eqeqeq=Opal.eqeqeq,$def=Opal.def,$truthy=Opal.truthy,$rb_gt=Opal.rb_gt,$rb_lt=Opal.rb_lt,$send=Opal.send,$rb_plus=Opal.rb_plus,$rb_divide=Opal.rb_divide,$rb_minus=Opal.rb_minus,$range=Opal.range,$neqeq=Opal.neqeq,$rb_le=Opal.rb_le,$eqeq=Opal.eqeq,$alias=Opal.alias;return 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time_params(year,month,day,hour,min,sec){if(year=year.$$is_string?parseInt(year,10):$Opal["$coerce_to!"](year,$$$("Integer"),"to_int"),month===nil)month=1;else if(!month.$$is_number)if(month["$respond_to?"]("to_str"))switch((month=month.$to_str()).toLowerCase()){case"jan":month=1;break;case"feb":month=2;break;case"mar":month=3;break;case"apr":month=4;break;case"may":month=5;break;case"jun":month=6;break;case"jul":month=7;break;case"aug":month=8;break;case"sep":month=9;break;case"oct":month=10;break;case"nov":month=11;break;case"dec":month=12;break;default:month=month.$to_i()}else month=$Opal["$coerce_to!"](month,$$$("Integer"),"to_int");return(month<1||month>12)&&$Kernel.$raise($$$("ArgumentError"),"month out of range: "+month),month-=1,((day=day===nil?1:day.$$is_string?parseInt(day,10):$Opal["$coerce_to!"](day,$$$("Integer"),"to_int"))<1||day>31)&&$Kernel.$raise($$$("ArgumentError"),"day out of range: 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null==month&&(month=nil),null==day&&(day=nil),null==hour&&(hour=nil),null==min&&(min=nil),null==sec&&(sec=nil),null==millisecond&&(millisecond=nil),null==_dummy1&&(_dummy1=nil),null==_dummy2&&(_dummy2=nil),null==_dummy3&&(_dummy3=nil),10===arguments.length&&(year=(args=$slice.call(arguments))[5],month=args[4],day=args[3],hour=args[2],min=args[1],sec=args[0]),year=(args=time_params(year,month,day,hour,min,sec))[0],month=args[1],day=args[2],hour=args[3],min=args[4],sec=args[5],result=new Date(Date.UTC(year,month,day,hour,min,0,1e3*sec)),year<100&&result.setUTCFullYear(year),result.timezone=0,result}),-2),$defs(self,"$now",(function(){return this.$new()}),0),$def(self,"$+",(function(other){$eqeqeq($$$("Time"),other)&&$Kernel.$raise($$$("TypeError"),"time + time?"),other.$$is_number||(other=$Opal["$coerce_to!"](other,$$$("Integer"),"to_int"));var result=new Date(this.getTime()+1e3*other);return 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null==item&&(item=nil),null==index&&(index=nil),next_item=paths["$[]"]($rb_plus(index,1)),$truthy(next_item["$nil?"]())?result=""+result+item:($truthy(item["$end_with?"]($$("SEPARATOR")))&&$truthy(next_item["$start_with?"]($$("SEPARATOR")))&&(item=item.$sub($regexp([$$("SEPARATOR"),"+$"]),"")),result=$truthy(item["$end_with?"]($$("SEPARATOR")))||$truthy(next_item["$start_with?"]($$("SEPARATOR")))?""+result+item:""+result+item+$$("SEPARATOR"))}),2),result)}),-1),$def(self,"$split",(function(path){return path.$split($$("SEPARATOR"))}),1),$alias(self,"realpath","expand_path"),$alias(self,"exists?","exist?")}(Opal.get_singleton_class(self),$nesting)}(0,$$$("IO"),[])},Opal.modules["corelib/process/base"]=function(Opal){var self,nil=Opal.nil,$klass=Opal.klass,$defs=Opal.defs;return self=$klass("::",null,"Signal"),$defs(self,"$trap",(function($a){return Opal.slice.call(arguments),nil}),-1),function($base,$super){var self=$klass("::",null,"GC");return $defs(self,"$start",(function(){return 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nil=Opal.nil,$$$=Opal.$$$,$klass=Opal.klass,$module=Opal.module,$def=Opal.def,$send=Opal.send,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$range=Opal.range,$rb_divide=Opal.rb_divide,$Kernel=Opal.Kernel,$Opal=Opal.Opal;return Opal.add_stubs("_verify_count,bytes,encode,strict_encode64,random_bytes,urlsafe_encode64,split,hex,[]=,-,[],map,to_proc,join,times,<<,|,ord,/,abs,random_float,raise,coerce_to!,flatten,new,random_number,length,include,extend"),function($base,$super,$parent_nesting){var self=$klass("::",null,"Random"),$nesting=[self].concat($parent_nesting);return function($base,$parent_nesting){var self=$module($base,"Formatter"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);$def(self,"$hex",(function(count){null==count&&(count=nil),count=$$$("Random").$_verify_count(count);for(var bytes=this.$bytes(count),out="",i=0;i<count;i++)out+=bytes.charCodeAt(i).toString(16).padStart(2,"0");return out.$encode("US-ASCII")}),-1),$def(self,"$random_bytes",(function(count){return 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null==count&&(count=nil),count=$$("Random").$_verify_count(count),map=$send([$range("0","9",!1),$range("a","z",!1),$range("A","Z",!1)],"map",[],"to_a".$to_proc()).$flatten(),$send($$$("Array"),"new",[count],(function $$2(i){var self=null==$$2.$$s?this:$$2.$$s;return null==i&&(i=nil),map["$[]"](self.$random_number(map.$length()))}),{$$arity:1,$$s:this}).$join()}),-1)}(self,$nesting),self.$include($$$($$$("Random"),"Formatter")),self.$extend($$$($$$("Random"),"Formatter"))}(0,0,[])},Opal.modules["corelib/random/mersenne_twister"]=function(Opal){var $writer,self,MAX_INT,nil=Opal.nil,$$$=Opal.$$$,$klass=Opal.klass,$const_set=Opal.const_set,$send=Opal.send,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,mersenne_twister=nil;return Opal.add_stubs("generator=,-"),mersenne_twister=function(){var N=624,M=397,TWIST=function(u,v){return function(u,v){return 2147483648&u|2147483647&v}(u,v)>>>1^(1&v?2567483615:0)};function genrand_int32(mt){var y;return--mt.left<=0&&function(mt){var j,p=0,_p=mt.state;for(mt.left=N,mt.next=0,j=228;--j;p++)_p[p]=_p[p+M]^TWIST(_p[p+0],_p[p+1]);for(j=M;--j;p++)_p[p]=_p[p+(M-N)]^TWIST(_p[p+0],_p[p+1]);_p[p]=_p[p+(M-N)]^TWIST(_p[p+0],_p[0])}(mt),y=mt.state[mt.next++],y^=y>>>11,y^=y<<7&2636928640,y^=y<<15&4022730752,(y^=y>>>18)>>>0}return{genrand_real:function(mt){return function(a,b){return(67108864*(a>>>=5)+(b>>>=6))*(1/9007199254740992)}(genrand_int32(mt),genrand_int32(mt))},init:function(s){var mt={left:0,next:N,state:new Array(N)};return function(mt,s){var j;for(mt.state[0]=s>>>0,j=1;j<N;j++)mt.state[j]=1812433253*(mt.state[j-1]^mt.state[j-1]>>30>>>0)+j,mt.state[j]&=4294967295;mt.left=1,mt.next=N}(mt,s),mt}}}(),self=$klass("::",null,"Random"),MAX_INT=Number.MAX_SAFE_INTEGER||Math.pow(2,53)-1,$const_set(self,"MERSENNE_TWISTER_GENERATOR",{new_seed:function(){return Math.round(Math.random()*MAX_INT)},reseed:function(seed){return mersenne_twister.init(seed)},rand:function(mt){return 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$ret_or_1;return!!$eqeqeq($$$("Random"),other)&&($truthy($ret_or_1=this.$seed()["$=="](other.$seed()))?this.$state()["$=="](other.$state()):$ret_or_1)}),1),$def(self,"$bytes",(function(length){return length=$$$("Random").$_verify_count(length),$send($$$("Array"),"new",[length],(function $$2(){return(null==$$2.$$s?this:$$2.$$s).$rand(255).$chr()}),{$$arity:0,$$s:this}).$join().$encode("ASCII-8BIT")}),1),$defs(self,"$bytes",(function(length){return $$$(this,"DEFAULT").$bytes(length)}),1),$def(self,"$rand",(function(limit){return this.$random_number(limit)}),-1),$def(self,"$random_float",(function(){return this.state++,Opal.$$rand.rand(this.$rng)}),0),$defs(self,"$random_float",(function(){return $$$(this,"DEFAULT").$random_float()}),0),$defs(self,"$generator=",(function(generator){return Opal.$$rand=generator,$truthy(this["$const_defined?"]("DEFAULT"))?$$$(this,"DEFAULT").$reseed():this.$const_set("DEFAULT",this.$new(this.$new_seed()))}),1)}(),self.$require("corelib/random/mersenne_twister")},Opal.modules["corelib/unsupported"]=function(Opal){var self=Opal.top,nil=Opal.nil,$$$=Opal.$$$,$Kernel=Opal.Kernel,$klass=Opal.klass,$send=Opal.send,$module=Opal.module,$def=Opal.def,$alias=Opal.alias,$defs=Opal.defs;Opal.add_stubs("raise,warn,each,define_method,%");var warnings={};function handle_unsupported_feature(message){switch(Opal.config.unsupported_features_severity){case"error":$Kernel.$raise($$$("NotImplementedError"),message);break;case"warning":!function(string){if(warnings[string])return;warnings[string]=!0,self.$warn(string)}(message)}}return function($base,$super){var self=$klass("::",null,"String"),ERROR="String#%s not supported. Mutable String methods are not supported in Opal.";$send(["<<","capitalize!","chomp!","chop!","downcase!","gsub!","lstrip!","next!","reverse!","slice!","squeeze!","strip!","sub!","succ!","swapcase!","tr!","tr_s!","upcase!","prepend","[]=","clear","encode!","unicode_normalize!"],"each",[],(function $String$1(method_name){return null==method_name&&(method_name=nil),$send(null==$String$1.$$s?this:$String$1.$$s,"define_method",[method_name],(function($a){return Opal.slice.call(arguments),$Kernel.$raise($$$("NotImplementedError"),ERROR["$%"](method_name))}),-1)}),{$$arity:1,$$s:self})}(),function($base){var self=$module("::","Kernel"),ERROR="Object freezing is not supported by Opal";$def(self,"$freeze",(function(){return handle_unsupported_feature(ERROR),this}),0),$def(self,"$frozen?",(function(){return handle_unsupported_feature(ERROR),!1}),0)}(),function($base){var self=$module("::","Kernel"),ERROR="Object tainting is not supported by Opal";$def(self,"$taint",(function(){return handle_unsupported_feature(ERROR),this}),0),$def(self,"$untaint",(function(){return handle_unsupported_feature(ERROR),this}),0),$def(self,"$tainted?",(function(){return handle_unsupported_feature(ERROR),!1}),0)}(),function($base,$super){var self=$klass("::",null,"Module");$def(self,"$public",(function($a){var methods,self=this;return 0===(methods=Opal.slice.call(arguments)).length?(self.$$module_function=!1,nil):1===methods.length?methods[0]:methods}),-1),$def(self,"$private_class_method",(function($a){var methods;return 1===(methods=Opal.slice.call(arguments)).length?methods[0]:methods}),-1),$def(self,"$private_method_defined?",(function(obj){return!1}),1),$def(self,"$private_constant",(function($a){return Opal.slice.call(arguments),nil}),-1),$alias(self,"nesting","public"),$alias(self,"private","public"),$alias(self,"protected","public"),$alias(self,"protected_method_defined?","private_method_defined?"),$alias(self,"public_class_method","private_class_method"),$alias(self,"public_instance_method","instance_method"),$alias(self,"public_instance_methods","instance_methods"),$alias(self,"public_method_defined?","method_defined?")}(),function($base){var self=$module("::","Kernel");$def(self,"$private_methods",(function($a){return Opal.slice.call(arguments),[]}),-1),$alias(self,"private_instance_methods","private_methods")}(),function($base,$parent_nesting){var self=$module("::","Kernel"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);$def(self,"$eval",(function($a){return Opal.slice.call(arguments),$Kernel.$raise($$$("NotImplementedError"),"To use Kernel#eval, you must first require 'opal-parser'. See https://github.com/opal/opal/blob/"+$$("RUBY_ENGINE_VERSION")+"/docs/opal_parser.md for details.")}),-1)}(0,[]),$defs(self,"$public",(function($a){var methods;return 1===(methods=Opal.slice.call(arguments)).length?methods[0]:methods}),-1),$defs(self,"$private",(function($a){var methods;return 1===(methods=Opal.slice.call(arguments)).length?methods[0]:methods}),-1)},Opal.queue((function(Opal){Opal.nil;var $Object=Opal.Object;return Opal.add_stubs("require,autoload"),$Object.$require("opal/base"),$Object.$require("opal/mini"),$Object.$require("corelib/kernel/format"),$Object.$require("corelib/string/encoding"),$Object.$autoload("Math","corelib/math"),$Object.$require("corelib/complex/base"),$Object.$autoload("Complex","corelib/complex"),$Object.$require("corelib/rational/base"),$Object.$autoload("Rational","corelib/rational"),$Object.$require("corelib/time"),$Object.$autoload("Struct","corelib/struct"),$Object.$require("corelib/dir"),$Object.$autoload("File","corelib/file"),$Object.$require("corelib/process/base"),$Object.$autoload("Process","corelib/process"),$Object.$autoload("Random","corelib/random"),$Object.$require("corelib/unsupported")}));
diff --git a/opal/master/opal.min.js.gz b/opal/master/opal.min.js.gz
index 4f66cfcc..137a11be 100644
Binary files a/opal/master/opal.min.js.gz and b/opal/master/opal.min.js.gz differ
diff --git a/opal/master/open-uri.js b/opal/master/open-uri.js
index e3d0f9ee..9fffbc77 100644
--- a/opal/master/open-uri.js
+++ b/opal/master/open-uri.js
@@ -1,230 +1,104 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["stringio"] = function(Opal) {
-  function $rb_ge(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs >= rhs : lhs['$>='](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $truthy = Opal.truthy, $alias = Opal.alias, $gvars = Opal.gvars;
-
-  Opal.add_stubs(['$include', '$new', '$call', '$close', '$attr_accessor', '$length', '$include?', '$!', '$check_readable', '$==', '$===', '$>=', '$raise', '$>', '$+', '$-', '$seek', '$enum_for', '$eof?', '$ord', '$[]', '$to_str', '$chomp', '$check_writable', '$String', '$write', '$closed_write?', '$closed_read?']);
+Opal.modules["stringio"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $defs = Opal.defs, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def, $eqeqeq = Opal.eqeqeq, $truthy = Opal.truthy, $rb_ge = Opal.rb_ge, $rb_gt = Opal.rb_gt, $rb_plus = Opal.rb_plus, $rb_minus = Opal.rb_minus, $eqeq = Opal.eqeq, $alias = Opal.alias;
+
+  Opal.add_stubs('new,call,close,attr_accessor,check_readable,==,length,===,>=,raise,>,+,-,seek,check_writable,String,[],eof?,write,read');
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'StringIO');
 
-    var $nesting = [self].concat($parent_nesting), $StringIO_open$1, $StringIO_initialize$2, $StringIO_eof$ques$3, $StringIO_seek$4, $StringIO_tell$5, $StringIO_rewind$6, $StringIO_each_byte$7, $StringIO_each_char$8, $StringIO_each$9, $StringIO_write$10, $StringIO_read$11, $StringIO_close$12, $StringIO_close_read$13, $StringIO_close_write$14, $StringIO_closed$ques$15, $StringIO_closed_read$ques$16, $StringIO_closed_write$ques$17, $StringIO_check_writable$18, $StringIO_check_readable$19;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-    self.$$prototype.position = self.$$prototype.string = self.$$prototype.closed = nil;
+    $proto.position = $proto.string = nil;
     
-    self.$include($$$($$($nesting, 'IO'), 'Readable'));
-    self.$include($$$($$($nesting, 'IO'), 'Writable'));
-    Opal.defs(self, '$open', $StringIO_open$1 = function $$open(string, mode) {
-      var $iter = $StringIO_open$1.$$p, block = $iter || nil, self = this, io = nil, res = nil;
+    $defs(self, '$open', function $$open(string, mode) {
+      var block = $$open.$$p || nil, self = this, io = nil, res = nil;
 
-      if ($iter) $StringIO_open$1.$$p = null;
-      
+      delete $$open.$$p;
       
-      if ($iter) $StringIO_open$1.$$p = null;;
+      ;
       
-      if (string == null) {
-        string = "";
-      };
+      if (string == null) string = "";;
       
-      if (mode == null) {
-        mode = nil;
-      };
+      if (mode == null) mode = nil;;
       io = self.$new(string, mode);
       res = block.$call(io);
       io.$close();
       return res;
-    }, $StringIO_open$1.$$arity = -1);
+    }, -1);
     self.$attr_accessor("string");
     
-    Opal.def(self, '$initialize', $StringIO_initialize$2 = function $$initialize(string, mode) {
-      var self = this, $ret_or_1 = nil, $ret_or_2 = nil;
+    $def(self, '$initialize', function $$initialize(string, mode) {
+      var $yield = $$initialize.$$p || nil, self = this;
 
+      delete $$initialize.$$p;
       
       
-      if (string == null) {
-        string = "";
-      };
+      if (string == null) string = "";;
       
-      if (mode == null) {
-        mode = "rw";
-      };
+      if (mode == null) mode = "rw";;
       self.string = string;
-      self.position = string.$length();
-      if ($truthy((function() {if ($truthy(($ret_or_1 = mode['$include?']("r")))) {
-        return mode['$include?']("w")['$!']()
-      } else {
-        return $ret_or_1
-      }; return nil; })())) {
-        return (self.closed = "write")
-      } else if ($truthy((function() {if ($truthy(($ret_or_2 = mode['$include?']("w")))) {
-        return mode['$include?']("r")['$!']()
-      } else {
-        return $ret_or_2
-      }; return nil; })())) {
-        return (self.closed = "read")
-      } else {
-        return nil
-      };
-    }, $StringIO_initialize$2.$$arity = -1);
+      self.position = 0;
+      return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [nil, mode], null);
+    }, -1);
     
-    Opal.def(self, '$eof?', $StringIO_eof$ques$3 = function() {
+    $def(self, '$eof?', function $StringIO_eof$ques$1() {
       var self = this;
 
       
       self.$check_readable();
       return self.position['$=='](self.string.$length());
-    }, $StringIO_eof$ques$3.$$arity = 0);
-    $alias(self, "eof", "eof?");
+    }, 0);
     
-    Opal.def(self, '$seek', $StringIO_seek$4 = function $$seek(pos, whence) {
-      var self = this, $case = nil;
+    $def(self, '$seek', function $$seek(pos, whence) {
+      var self = this, $ret_or_1 = nil;
 
       
       
-      if (whence == null) {
-        whence = $$$($$($nesting, 'IO'), 'SEEK_SET');
-      };
-      $case = whence;
-      if ($$$($$($nesting, 'IO'), 'SEEK_SET')['$===']($case)) {
-      if ($truthy($rb_ge(pos, 0))) {
+      if (whence == null) whence = $$$($$('IO'), 'SEEK_SET');;
+      self.read_buffer = "";
+      if ($eqeqeq($$$($$('IO'), 'SEEK_SET'), ($ret_or_1 = whence))) {
+        
+        if (!$truthy($rb_ge(pos, 0))) {
+          self.$raise($$$($$('Errno'), 'EINVAL'))
+        };
+        self.position = pos;
+      } else if ($eqeqeq($$$($$('IO'), 'SEEK_CUR'), $ret_or_1)) {
+        if ($truthy($rb_gt($rb_plus(self.position, pos), self.string.$length()))) {
+          self.position = self.string.$length()
+        } else {
+          self.position = $rb_plus(self.position, pos)
+        }
+      } else if ($eqeqeq($$$($$('IO'), 'SEEK_END'), $ret_or_1)) {
+        if ($truthy($rb_gt(pos, self.string.$length()))) {
+          self.position = 0
+        } else {
+          self.position = $rb_minus(self.position, pos)
+        }
       } else {
-        self.$raise($$$($$($nesting, 'Errno'), 'EINVAL'))
+        nil
       };
-      self.position = pos;}
-      else if ($$$($$($nesting, 'IO'), 'SEEK_CUR')['$===']($case)) {if ($truthy($rb_gt($rb_plus(self.position, pos), self.string.$length()))) {
-        self.position = self.string.$length()
-      } else {
-        self.position = $rb_plus(self.position, pos)
-      }}
-      else if ($$$($$($nesting, 'IO'), 'SEEK_END')['$===']($case)) {if ($truthy($rb_gt(pos, self.string.$length()))) {
-        self.position = 0
-      } else {
-        self.position = $rb_minus(self.position, pos)
-      }};
       return 0;
-    }, $StringIO_seek$4.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$tell', $StringIO_tell$5 = function $$tell() {
+    $def(self, '$tell', function $$tell() {
       var self = this;
 
       return self.position
-    }, $StringIO_tell$5.$$arity = 0);
-    $alias(self, "pos", "tell");
-    $alias(self, "pos=", "seek");
+    }, 0);
     
-    Opal.def(self, '$rewind', $StringIO_rewind$6 = function $$rewind() {
+    $def(self, '$rewind', function $$rewind() {
       var self = this;
 
       return self.$seek(0)
-    }, $StringIO_rewind$6.$$arity = 0);
-    
-    Opal.def(self, '$each_byte', $StringIO_each_byte$7 = function $$each_byte() {
-      var $iter = $StringIO_each_byte$7.$$p, block = $iter || nil, $a, self = this, i = nil;
-
-      if ($iter) $StringIO_each_byte$7.$$p = null;
-      
-      
-      if ($iter) $StringIO_each_byte$7.$$p = null;;
-      if ($truthy(block)) {
-      } else {
-        return self.$enum_for("each_byte")
-      };
-      self.$check_readable();
-      i = self.position;
-      while (!($truthy(self['$eof?']()))) {
-        
-        block.$call(self.string['$[]'](i).$ord());
-        i = $rb_plus(i, 1);
-      };
-      return self;
-    }, $StringIO_each_byte$7.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$each_char', $StringIO_each_char$8 = function $$each_char() {
-      var $iter = $StringIO_each_char$8.$$p, block = $iter || nil, $a, self = this, i = nil;
-
-      if ($iter) $StringIO_each_char$8.$$p = null;
-      
-      
-      if ($iter) $StringIO_each_char$8.$$p = null;;
-      if ($truthy(block)) {
-      } else {
-        return self.$enum_for("each_char")
-      };
-      self.$check_readable();
-      i = self.position;
-      while (!($truthy(self['$eof?']()))) {
-        
-        block.$call(self.string['$[]'](i));
-        i = $rb_plus(i, 1);
-      };
-      return self;
-    }, $StringIO_each_char$8.$$arity = 0);
-    
-    Opal.def(self, '$each', $StringIO_each$9 = function $$each(separator) {
-      var $iter = $StringIO_each$9.$$p, $yield = $iter || nil, self = this, chomp_lines = nil;
-      if ($gvars["/"] == null) $gvars["/"] = nil;
-
-      if ($iter) $StringIO_each$9.$$p = null;
-      
-      
-      if (separator == null) {
-        separator = $gvars["/"];
-      };
-      if (($yield !== nil)) {
-      } else {
-        return self.$enum_for("each_line")
-      };
-      self.$check_readable();
-      chomp_lines = false;
-      if ($truthy($$$('::', 'Hash')['$==='](separator))) {
-        separator = (function() {if ($truthy((chomp_lines = separator['$[]']("chomp")))) {
-          return /\r?\n/
-        } else {
-          return $gvars["/"]
-        }; return nil; })()
-      } else if ($truthy(separator)) {
-        separator = separator.$to_str()
-      } else {
-        separator = undefined
-      };
-      
-      var str = self.string, stringLength = str.length;
-      if (self.position < stringLength) str = str.substr(self.position);
-      if (separator) {
-        var chomped = (str).$chomp(), trailing = str.length !== chomped.length, splitted = chomped.split(separator);
-        for (var i = 0, len = splitted.length; i < len; i++) {
-          var line = chomp_lines ? splitted[i] : (i < len - 1 || trailing ? splitted[i] + separator : splitted[i]);
-          Opal.yield1($yield, line);
-        }
-      } else if (separator === undefined) {
-        Opal.yield1($yield, str);
-      } else {
-        var m, re = /(.+(?:\n\n|$))\n*/g;
-        while ((m = re.exec(str))) Opal.yield1($yield, m[1]);
-      }
-      self.position = stringLength;
-    ;
-      return self;
-    }, $StringIO_each$9.$$arity = -1);
-    $alias(self, "each_line", "each");
-    
-    Opal.def(self, '$write', $StringIO_write$10 = function $$write(string) {
+    $def(self, '$write', function $$write(string) {
       var self = this, before = nil, after = nil;
 
       
       self.$check_writable();
+      self.read_buffer = "";
       string = self.$String(string);
-      if (self.string.$length()['$=='](self.position)) {
+      if ($eqeq(self.string.$length(), self.position)) {
         
         self.string = $rb_plus(self.string, string);
         return (self.position = $rb_plus(self.position, string.$length()));
@@ -235,124 +109,50 @@ Opal.modules["stringio"] = function(Opal) {
         self.string = $rb_plus($rb_plus(before, string), after);
         return (self.position = $rb_plus(self.position, string.$length()));
       };
-    }, $StringIO_write$10.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$read', $StringIO_read$11 = function $$read(length, outbuf) {
+    $def(self, '$read', function $$read(length, outbuf) {
       var self = this, string = nil, str = nil;
 
       
       
-      if (length == null) {
-        length = nil;
-      };
+      if (length == null) length = nil;;
       
-      if (outbuf == null) {
-        outbuf = nil;
-      };
+      if (outbuf == null) outbuf = nil;;
       self.$check_readable();
       if ($truthy(self['$eof?']())) {
-        return nil};
-      string = (function() {if ($truthy(length)) {
-        
-        str = self.string['$[]'](self.position, length);
-        self.position = $rb_plus(self.position, length);
-        return str;
-      } else {
-        
-        str = self.string['$[]'](Opal.Range.$new(self.position, -1, false));
-        self.position = self.string.$length();
-        return str;
-      }; return nil; })();
+        return nil
+      };
+      string = ($truthy(length) ? (((str = self.string['$[]'](self.position, length)), (self.position = $rb_plus(self.position, length)), ($truthy($rb_gt(self.position, self.string.$length())) ? ((self.position = self.string.$length())) : nil), str)) : (((str = self.string['$[]'](Opal.Range.$new(self.position, -1, false))), (self.position = self.string.$length()), str)));
       if ($truthy(outbuf)) {
         return outbuf.$write(string)
       } else {
         return string
       };
-    }, $StringIO_read$11.$$arity = -1);
-    
-    Opal.def(self, '$close', $StringIO_close$12 = function $$close() {
-      var self = this;
-
-      return (self.closed = "both")
-    }, $StringIO_close$12.$$arity = 0);
+    }, -1);
     
-    Opal.def(self, '$close_read', $StringIO_close_read$13 = function $$close_read() {
+    $def(self, '$sysread', function $$sysread(length) {
       var self = this;
 
-      if (self.closed['$==']("write")) {
-        return (self.closed = "both")
-      } else {
-        return (self.closed = "read")
-      }
-    }, $StringIO_close_read$13.$$arity = 0);
-    
-    Opal.def(self, '$close_write', $StringIO_close_write$14 = function $$close_write() {
-      var self = this;
-
-      if (self.closed['$==']("read")) {
-        return (self.closed = "both")
-      } else {
-        return (self.closed = "write")
-      }
-    }, $StringIO_close_write$14.$$arity = 0);
-    
-    Opal.def(self, '$closed?', $StringIO_closed$ques$15 = function() {
-      var self = this;
-
-      return self.closed['$==']("both")
-    }, $StringIO_closed$ques$15.$$arity = 0);
-    
-    Opal.def(self, '$closed_read?', $StringIO_closed_read$ques$16 = function() {
-      var self = this, $ret_or_3 = nil;
-
-      if ($truthy(($ret_or_3 = self.closed['$==']("read")))) {
-        return $ret_or_3
-      } else {
-        return self.closed['$==']("both")
-      }
-    }, $StringIO_closed_read$ques$16.$$arity = 0);
-    
-    Opal.def(self, '$closed_write?', $StringIO_closed_write$ques$17 = function() {
-      var self = this, $ret_or_4 = nil;
-
-      if ($truthy(($ret_or_4 = self.closed['$==']("write")))) {
-        return $ret_or_4
-      } else {
-        return self.closed['$==']("both")
-      }
-    }, $StringIO_closed_write$ques$17.$$arity = 0);
-    
-    Opal.def(self, '$check_writable', $StringIO_check_writable$18 = function $$check_writable() {
-      var self = this;
-
-      if ($truthy(self['$closed_write?']())) {
-        return self.$raise($$($nesting, 'IOError'), "not opened for writing")
-      } else {
-        return nil
-      }
-    }, $StringIO_check_writable$18.$$arity = 0);
-    return (Opal.def(self, '$check_readable', $StringIO_check_readable$19 = function $$check_readable() {
-      var self = this;
-
-      if ($truthy(self['$closed_read?']())) {
-        return self.$raise($$($nesting, 'IOError'), "not opened for reading")
-      } else {
-        return nil
-      }
-    }, $StringIO_check_readable$19.$$arity = 0), nil) && 'check_readable';
-  })($nesting[0], $$($nesting, 'IO'), $nesting)
+      
+      self.$check_readable();
+      return self.$read(length);
+    }, 1);
+    $alias(self, "eof", "eof?");
+    $alias(self, "pos", "tell");
+    $alias(self, "pos=", "seek");
+    return $alias(self, "readpartial", "read");
+  })($nesting[0], $$('IO'), $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/pack_unpack/format_string_parser"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module;
+Opal.modules["corelib/pack_unpack/format_string_parser"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $Kernel = Opal.Kernel;
 
-  Opal.add_stubs(['$raise']);
-  return (function($base, $parent_nesting) {
+  Opal.add_stubs('raise');
+  return (function($base) {
     var self = $module($base, 'PackUnpack');
 
-    var $nesting = [self].concat($parent_nesting);
-
+    
     
     var directives = [
       // Integer
@@ -438,11 +238,11 @@ Opal.modules["corelib/pack_unpack/format_string_parser"] = function(Opal) {
         var directiveSupportsModifiers = /[sSiIlLqQjJ]/.test(currentDirective);
 
         if (!directiveSupportsModifiers && currentModifiers.length > 0) {
-          self.$raise($$($nesting, 'ArgumentError'), "" + "'" + (currentModifiers[0]) + "' allowed only after types sSiIlLqQjJ")
+          $Kernel.$raise($$$('ArgumentError'), "'" + (currentModifiers[0]) + "' allowed only after types sSiIlLqQjJ")
         }
 
         if (currentModifiers.indexOf('<') !== -1 && currentModifiers.indexOf('>') !== -1) {
-          self.$raise($$($nesting, 'RangeError'), "Can't use both '<' and '>'")
+          $Kernel.$raise($$$('RangeError'), "Can't use both '<' and '>'")
         }
 
         if (!countSpecified) {
@@ -486,21 +286,19 @@ Opal.modules["corelib/pack_unpack/format_string_parser"] = function(Opal) {
       yieldAndReset();
     }
   
-  })($nesting[0], $nesting)
+  })('::')
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/array/pack"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $coerce_to = Opal.coerce_to, $klass = Opal.klass;
+Opal.modules["corelib/array/pack"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, nil = Opal.nil, $$$ = Opal.$$$, $coerce_to = Opal.coerce_to, $klass = Opal.klass, $Kernel = Opal.Kernel, $Opal = Opal.Opal, $def = Opal.def;
 
-  Opal.add_stubs(['$require', '$raise', '$delete', '$gsub', '$coerce_to!', '$inspect']);
+  Opal.add_stubs('require,raise,delete,gsub,coerce_to!,inspect');
   
   self.$require("corelib/pack_unpack/format_string_parser");
-  return (function($base, $super, $parent_nesting) {
+  return (function($base, $super) {
     var self = $klass($base, $super, 'Array');
 
-    var $nesting = [self].concat($parent_nesting), $Array_pack$1;
-
+    
     
     
     // Format Parser
@@ -592,7 +390,7 @@ Opal.modules["corelib/array/pack"] = function(Opal) {
         var buffer = callback(data);
 
         return buffer.map(function(item) {
-          return $coerce_to(item, $$($nesting, 'Integer'), 'to_int')
+          return $coerce_to(item, $$$('Integer'), 'to_int')
         });
       }
     }
@@ -602,7 +400,7 @@ Opal.modules["corelib/array/pack"] = function(Opal) {
         var buffer = callback(data);
 
         return buffer.map(function(item) {
-          return $coerce_to(item, $$($nesting, 'String'), 'to_str')
+          return $coerce_to(item, $$$('String'), 'to_str')
         });
       }
     }
@@ -615,7 +413,7 @@ Opal.modules["corelib/array/pack"] = function(Opal) {
             return String.fromCodePoint(item);
           } catch (error) {
             if (error instanceof RangeError) {
-              self.$raise($$($nesting, 'RangeError'), "value out of range");
+              $Kernel.$raise($$$('RangeError'), "value out of range");
             }
             throw error;
           }
@@ -698,7 +496,7 @@ Opal.modules["corelib/array/pack"] = function(Opal) {
           }
         } else {
           if (buffer.length < count) {
-            self.$raise($$($nesting, 'ArgumentError'), "too few arguments");
+            $Kernel.$raise($$$('ArgumentError'), "too few arguments");
           }
           for (var i = 0; i < count; i++) {
             chunkData = callback(buffer);
@@ -724,9 +522,9 @@ Opal.modules["corelib/array/pack"] = function(Opal) {
         if (source === nil) {
           source = '';
         } else if (source === undefined) {
-          self.$raise($$($nesting, 'ArgumentError'), "too few arguments");
+          $Kernel.$raise($$$('ArgumentError'), "too few arguments");
         } else {
-          source = $coerce_to(source, $$($nesting, 'String'), 'to_str');
+          source = $coerce_to(source, $$$('String'), 'to_str');
         }
 
         buffer = buffer.slice(1, buffer.length);
@@ -885,11 +683,11 @@ Opal.modules["corelib/array/pack"] = function(Opal) {
       'p': null
     };
   ;
-    return (Opal.def(self, '$pack', $Array_pack$1 = function $$pack(format) {
+    return $def(self, '$pack', function $$pack(format) {
       var self = this;
 
       
-      format = $$($nesting, 'Opal')['$coerce_to!'](format, $$($nesting, 'String'), "to_str").$gsub(/\s/, "").$delete("\u0000");
+      format = $Opal['$coerce_to!'](format, $$$('String'), "to_str").$gsub(/\s/, "").$delete("\u0000");
       
       var output = '';
 
@@ -908,7 +706,7 @@ Opal.modules["corelib/array/pack"] = function(Opal) {
             chunkReader = readChunk[directive];
 
         if (chunkReader == null) {
-          self.$raise("" + "Unsupported pack directive " + ((directive).$inspect()) + " (no chunk reader defined)")
+          $Kernel.$raise("Unsupported pack directive " + ((directive).$inspect()) + " (no chunk reader defined)")
         }
 
         var chunkData = chunkReader(buffer, count);
@@ -918,7 +716,7 @@ Opal.modules["corelib/array/pack"] = function(Opal) {
         var handler = handlers[directive];
 
         if (handler == null) {
-          self.$raise("" + "Unsupported pack directive " + ((directive).$inspect()) + " (no handler defined)")
+          $Kernel.$raise("Unsupported pack directive " + ((directive).$inspect()) + " (no handler defined)")
         }
 
         return handler(chunk);
@@ -931,7 +729,7 @@ Opal.modules["corelib/array/pack"] = function(Opal) {
           var shouldAutocomplete = autocompletion[directive]
 
           if (shouldAutocomplete == null) {
-            self.$raise("" + "Unsupported pack directive " + ((directive).$inspect()) + " (no autocompletion rule defined)")
+            $Kernel.$raise("Unsupported pack directive " + ((directive).$inspect()) + " (no autocompletion rule defined)")
           }
 
           if (shouldAutocomplete) {
@@ -949,74 +747,61 @@ Opal.modules["corelib/array/pack"] = function(Opal) {
         return Opal.enc(output, "binary");
       }
     ;
-    }, $Array_pack$1.$$arity = 1), nil) && 'pack';
-  })($nesting[0], null, $nesting);
+    }, 1);
+  })('::', null);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["open-uri"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $alias = Opal.alias, $truthy = Opal.truthy, $send = Opal.send, $hash2 = Opal.hash2, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super;
-
-  Opal.add_stubs(['$require', '$private', '$respond_to?', '$=~', '$open_uri', '$to_proc', '$open_uri_original_open', '$module_function', '$open_loop', '$rewind', '$close_io', '$close!', '$closed?', '$close', '$request', '$==', '$build_response', '$raise', '$new', '$<<', '$pack', '$data', '$io', '$status=', '$-', '$meta_add_field', '$attr_reader', '$+', '$length', '$===', '$init', '$extend', '$instance_eval', '$status', '$base_uri', '$base_uri=', '$each', '$metas', '$meta_add_field2', '$attr_accessor', '$charset', '$find_encoding', '$set_encoding', '$force_encoding', '$string', '$find', '$downcase', '$[]=', '$join', '$meta_setup_encoding', '$[]', '$utc', '$at', '$content_type_parse', '$scheme', '$open', '$read']);
+Opal.modules["open-uri"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $alias = Opal.alias, $truthy = Opal.truthy, $send = Opal.send, $to_a = Opal.to_a, $def = Opal.def, $hash2 = Opal.hash2, $defs = Opal.defs, $eqeq = Opal.eqeq, $rb_minus = Opal.rb_minus, $klass = Opal.klass, $send2 = Opal.send2, $find_super = Opal.find_super, $rb_plus = Opal.rb_plus, $eqeqeq = Opal.eqeqeq;
+
+  Opal.add_stubs('require,private,=~,respond_to?,open_uri,to_proc,open_uri_original_open,module_function,open_loop,rewind,close_io,close!,closed?,close,request,==,build_response,raise,new,<<,pack,data,io,status=,-,meta_add_field,attr_reader,+,length,===,init,extend,instance_eval,status,base_uri,base_uri=,each,metas,meta_add_field2,attr_accessor,charset,find_encoding,set_encoding,force_encoding,string,find,downcase,[]=,join,meta_setup_encoding,[],utc,at,content_type_parse,scheme,open,read');
   
   self.$require("stringio");
   self.$require("corelib/array/pack");
   (function($base, $parent_nesting) {
     var self = $module($base, 'Kernel');
 
-    var $nesting = [self].concat($parent_nesting), $Kernel_open$1;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
     self.$private();
     $alias(self, "open_uri_original_open", "open");
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return $alias(self, "open_uri_original_open", "open")
     })(Opal.get_singleton_class(self), $nesting);
     
-    Opal.def(self, '$open', $Kernel_open$1 = function $$open(name, $a) {
-      var $iter = $Kernel_open$1.$$p, block = $iter || nil, $post_args, rest, self = this, $ret_or_1 = nil;
+    $def(self, '$open', function $$open(name, $a) {
+      var block = $$open.$$p || nil, $post_args, rest, self = this;
 
-      if ($iter) $Kernel_open$1.$$p = null;
+      delete $$open.$$p;
       
+      ;
       
-      if ($iter) $Kernel_open$1.$$p = null;;
-      
-      $post_args = Opal.slice.call(arguments, 1, arguments.length);
+      $post_args = Opal.slice.call(arguments, 1);
       
       rest = $post_args;;
-      if ($truthy((function() {if ($truthy(($ret_or_1 = name['$respond_to?']("to_str")))) {
-        return /^[A-Za-z][A-Za-z0-9+\-\.]*:\/\//['$=~'](name)
-      } else {
-        return $ret_or_1
-      }; return nil; })())) {
-        return $send($$($nesting, 'OpenURI'), 'open_uri', [name].concat(Opal.to_a(rest)), block.$to_proc())
+      if (($truthy(name['$respond_to?']("to_str")) && ($truthy(/^[A-Za-z][A-Za-z0-9+\-\.]*:\/\//['$=~'](name))))) {
+        return $send($$('OpenURI'), 'open_uri', [name].concat($to_a(rest)), block.$to_proc())
       } else {
-        return $send(self, 'open_uri_original_open', [name].concat(Opal.to_a(rest)), block.$to_proc())
+        return $send(self, 'open_uri_original_open', [name].concat($to_a(rest)), block.$to_proc())
       };
-    }, $Kernel_open$1.$$arity = -2);
+    }, -2);
     return self.$module_function("open");
   })($nesting[0], $nesting);
   return (function($base, $parent_nesting) {
     var self = $module($base, 'OpenURI');
 
-    var $nesting = [self].concat($parent_nesting), $OpenURI_open_uri$2, $OpenURI_close_io$3, $OpenURI_open_loop$4, $OpenURI_build_response$5, $OpenURI_data$6, $OpenURI_request$7;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
-    Opal.defs(self, '$open_uri', $OpenURI_open_uri$2 = function $$open_uri(name, $a) {
-      var $post_args, rest, $iter = $OpenURI_open_uri$2.$$p, $yield = $iter || nil, self = this, io = nil;
+    $defs(self, '$open_uri', function $$open_uri(name, $a) {
+      var $post_args, rest, $yield = $$open_uri.$$p || nil, self = this, io = nil;
 
-      if ($iter) $OpenURI_open_uri$2.$$p = null;
+      delete $$open_uri.$$p;
       
       
-      $post_args = Opal.slice.call(arguments, 1, arguments.length);
+      $post_args = Opal.slice.call(arguments, 1);
       
       rest = $post_args;;
       io = self.$open_loop(name, $hash2([], {}));
@@ -1031,10 +816,9 @@ Opal.modules["open-uri"] = function(Opal) {
       } else {
         return io
       };
-    }, $OpenURI_open_uri$2.$$arity = -2);
-    Opal.defs(self, '$close_io', $OpenURI_close_io$3 = function $$close_io(io) {
-      var self = this;
-
+    }, -2);
+    $defs(self, '$close_io', function $$close_io(io) {
+      
       if ($truthy(io['$respond_to?']("close!"))) {
         return io['$close!']()
       } else if ($truthy(io['$closed?']())) {
@@ -1042,50 +826,41 @@ Opal.modules["open-uri"] = function(Opal) {
       } else {
         return io.$close()
       }
-    }, $OpenURI_close_io$3.$$arity = 1);
-    Opal.defs(self, '$open_loop', $OpenURI_open_loop$4 = function $$open_loop(uri, options) {
-      var self = this, req = nil, data = nil, status = nil, status_text = nil, $ret_or_2 = nil, $ret_or_3 = nil;
+    }, 1);
+    $defs(self, '$open_loop', function $$open_loop(uri, options) {
+      var self = this, req = nil, data = nil, status = nil, status_text = nil;
 
       
       req = self.$request(uri);
       data = req.responseText;
       status = req.status;
       status_text = req.statusText && req.statusText.errno ? req.statusText.errno : req.statusText;
-      if ($truthy((function() {if ($truthy(($ret_or_2 = status['$=='](200)))) {
-        return $ret_or_2
-      } else {
-        
-        if ($truthy(($ret_or_3 = status['$=='](0)))) {
-          return data
-        } else {
-          return $ret_or_3
-        };
-      }; return nil; })())) {
+      if (($eqeq(status, 200) || (($eqeq(status, 0) && ($truthy(data)))))) {
         return self.$build_response(req, status, status_text)
       } else {
-        return self.$raise($$$($$($nesting, 'OpenURI'), 'HTTPError').$new("" + (status) + " " + (status_text), ""))
+        return self.$raise($$$($$('OpenURI'), 'HTTPError').$new("" + (status) + " " + (status_text), ""))
       };
-    }, $OpenURI_open_loop$4.$$arity = 2);
-    Opal.defs(self, '$build_response', $OpenURI_build_response$5 = function $$build_response(req, status, status_text) {
+    }, 2);
+    $defs(self, '$build_response', function $$build_response(req, status, status_text) {
       var self = this, buf = nil, io = nil, $writer = nil, last_modified = nil;
 
       
-      buf = $$($nesting, 'Buffer').$new();
+      buf = $$('Buffer').$new();
       buf['$<<'](self.$data(req).$pack("c*"));
       io = buf.$io();
       
       $writer = ["" + (status) + " " + (status_text)];
-      $send(io, 'status=', Opal.to_a($writer));
+      $send(io, 'status=', $to_a($writer));
       $writer[$rb_minus($writer["length"], 1)];;
       io.$meta_add_field("content-type", req.getResponseHeader("Content-Type") || '');
       last_modified = req.getResponseHeader("Last-Modified");
       if ($truthy(last_modified)) {
-        io.$meta_add_field("last-modified", last_modified)};
+        io.$meta_add_field("last-modified", last_modified)
+      };
       return io;
-    }, $OpenURI_build_response$5.$$arity = 3);
-    Opal.defs(self, '$data', $OpenURI_data$6 = function $$data(req) {
-      var self = this;
-
+    }, 3);
+    $defs(self, '$data', function $$data(req) {
+      
       
       var binStr = req.responseText;
       var byteArray = [];
@@ -1096,8 +871,8 @@ Opal.modules["open-uri"] = function(Opal) {
       }
       return byteArray;
     
-    }, $OpenURI_data$6.$$arity = 1);
-    Opal.defs(self, '$request', $OpenURI_request$7 = function $$request(uri) {
+    }, 1);
+    $defs(self, '$request', function $$request(uri) {
       var self = this;
 
       
@@ -1110,124 +885,115 @@ Opal.modules["open-uri"] = function(Opal) {
         xhr.send();
         return xhr;
       } catch (error) {
-        self.$raise($$$($$($nesting, 'OpenURI'), 'HTTPError').$new(error.message, ""))
+        self.$raise($$$($$('OpenURI'), 'HTTPError').$new(error.message, ""))
       }
     
-    }, $OpenURI_request$7.$$arity = 1);
-    (function($base, $super, $parent_nesting) {
+    }, 1);
+    (function($base, $super) {
       var self = $klass($base, $super, 'HTTPError');
 
-      var $nesting = [self].concat($parent_nesting), $HTTPError_initialize$8;
-
       
       
-      Opal.def(self, '$initialize', $HTTPError_initialize$8 = function $$initialize(message, io) {
-        var $iter = $HTTPError_initialize$8.$$p, $yield = $iter || nil, self = this;
+      
+      $def(self, '$initialize', function $$initialize(message, io) {
+        var $yield = $$initialize.$$p || nil, self = this;
 
-        if ($iter) $HTTPError_initialize$8.$$p = null;
+        delete $$initialize.$$p;
         
-        $send2(self, $find_super(self, 'initialize', $HTTPError_initialize$8, false, true), 'initialize', [message, io], null);
+        $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [message, io], null);
         return (self.io = io);
-      }, $HTTPError_initialize$8.$$arity = 2);
+      }, 2);
       return self.$attr_reader("io");
-    })($nesting[0], $$($nesting, 'StandardError'), $nesting);
+    })($nesting[0], $$('StandardError'));
     (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Buffer');
 
-      var $nesting = [self].concat($parent_nesting), $Buffer_initialize$9, $Buffer_$lt$lt$10, $Buffer_io$11;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.io = self.$$prototype.size = nil;
+      $proto.io = $proto.size = nil;
       
       
-      Opal.def(self, '$initialize', $Buffer_initialize$9 = function $$initialize() {
+      $def(self, '$initialize', function $$initialize() {
         var self = this;
 
         
-        self.io = $$($nesting, 'StringIO').$new();
+        self.io = $$('StringIO').$new();
         return (self.size = 0);
-      }, $Buffer_initialize$9.$$arity = 0);
+      }, 0);
       self.$attr_reader("size");
       
-      Opal.def(self, '$<<', $Buffer_$lt$lt$10 = function(str) {
+      $def(self, '$<<', function $Buffer_$lt$lt$1(str) {
         var self = this;
 
         
         self.io['$<<'](str);
         return (self.size = $rb_plus(self.size, str.$length()));
-      }, $Buffer_$lt$lt$10.$$arity = 1);
-      return (Opal.def(self, '$io', $Buffer_io$11 = function $$io() {
+      }, 1);
+      return $def(self, '$io', function $$io() {
         var self = this;
 
         
-        if ($truthy($$($nesting, 'Meta')['$==='](self.io))) {
-        } else {
-          $$($nesting, 'Meta').$init(self.io)
+        if (!$eqeqeq($$('Meta'), self.io)) {
+          $$('Meta').$init(self.io)
         };
         return self.io;
-      }, $Buffer_io$11.$$arity = 0), nil) && 'io';
+      }, 0);
     })($nesting[0], null, $nesting);
     (function($base, $parent_nesting) {
       var self = $module($base, 'Meta');
 
-      var $nesting = [self].concat($parent_nesting), $Meta_init$12, $Meta_meta_setup_encoding$15, $Meta_set_encoding$16, $Meta_find_encoding$17, $Meta_meta_add_field2$18, $Meta_meta_add_field$19, $Meta_last_modified$20, $Meta_content_type_parse$21, $Meta_charset$22, $Meta_content_type$23;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
-      Opal.defs($$($nesting, 'Meta'), '$init', $Meta_init$12 = function $$init(obj, src) {
-        var $$13, $$14, self = this, $writer = nil;
+      $defs($$('Meta'), '$init', function $$init(obj, src) {
+        var self = this, $writer = nil;
 
         
         
-        if (src == null) {
-          src = nil;
-        };
-        obj.$extend($$($nesting, 'Meta'));
-        $send(obj, 'instance_eval', [], ($$13 = function(){var self = $$13.$$s == null ? this : $$13.$$s;
+        if (src == null) src = nil;;
+        obj.$extend($$('Meta'));
+        $send(obj, 'instance_eval', [], function $$2(){var self = $$2.$$s == null ? this : $$2.$$s;
 
           
           self.base_uri = nil;
           self.meta = $hash2([], {});
-          return (self.metas = $hash2([], {}));}, $$13.$$s = self, $$13.$$arity = 0, $$13));
+          return (self.metas = $hash2([], {}));}, {$$arity: 0, $$s: self});
         if ($truthy(src)) {
           
           
           $writer = [src.$status()];
-          $send(obj, 'status=', Opal.to_a($writer));
+          $send(obj, 'status=', $to_a($writer));
           $writer[$rb_minus($writer["length"], 1)];;
           
           $writer = [src.$base_uri()];
-          $send(obj, 'base_uri=', Opal.to_a($writer));
+          $send(obj, 'base_uri=', $to_a($writer));
           $writer[$rb_minus($writer["length"], 1)];;
-          return $send(src.$metas(), 'each', [], ($$14 = function(name, values){var self = $$14.$$s == null ? this : $$14.$$s;
-
+          return $send(src.$metas(), 'each', [], function $$3(name, values){
             
             
-            if (name == null) {
-              name = nil;
-            };
+            if (name == null) name = nil;;
             
-            if (values == null) {
-              values = nil;
-            };
-            return obj.$meta_add_field2(name, values);}, $$14.$$s = self, $$14.$$arity = 2, $$14));
+            if (values == null) values = nil;;
+            return obj.$meta_add_field2(name, values);}, 2);
         } else {
           return nil
         };
-      }, $Meta_init$12.$$arity = -2);
+      }, -2);
       self.$attr_accessor("status");
       self.$attr_accessor("base_uri");
       self.$attr_reader("meta");
       self.$attr_reader("metas");
       
-      Opal.def(self, '$meta_setup_encoding', $Meta_meta_setup_encoding$15 = function $$meta_setup_encoding() {
+      $def(self, '$meta_setup_encoding', function $$meta_setup_encoding() {
         var self = this, charset = nil, enc = nil;
 
         
         charset = self.$charset();
         enc = self.$find_encoding(charset);
         return self.$set_encoding(enc);
-      }, $Meta_meta_setup_encoding$15.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$set_encoding', $Meta_set_encoding$16 = function $$set_encoding(enc) {
+      $def(self, '$set_encoding', function $$set_encoding(enc) {
         var self = this;
 
         if ($truthy(self['$respond_to?']("force_encoding"))) {
@@ -1237,32 +1003,32 @@ Opal.modules["open-uri"] = function(Opal) {
         } else {
           return self.$set_encoding(enc)
         }
-      }, $Meta_set_encoding$16.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$find_encoding', $Meta_find_encoding$17 = function $$find_encoding(charset) {
-        var self = this, enc = nil;
+      $def(self, '$find_encoding', function $$find_encoding(charset) {
+        var enc = nil;
 
         
         enc = nil;
         if ($truthy(charset)) {
           
           try {
-            enc = $$($nesting, 'Encoding').$find(charset)
+            enc = $$('Encoding').$find(charset)
           } catch ($err) {
-            if (Opal.rescue($err, [$$($nesting, 'ArgumentError')])) {
+            if (Opal.rescue($err, [$$('ArgumentError')])) {
               try {
                 nil
               } finally { Opal.pop_exception(); }
             } else { throw $err; }
-          };};
-        if ($truthy(enc)) {
-        } else {
-          enc = $$$($$($nesting, 'Encoding'), 'ASCII_8BIT')
+          };
+        };
+        if (!$truthy(enc)) {
+          enc = $$$($$('Encoding'), 'ASCII_8BIT')
         };
         return enc;
-      }, $Meta_find_encoding$17.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$meta_add_field2', $Meta_meta_add_field2$18 = function $$meta_add_field2(name, values) {
+      $def(self, '$meta_add_field2', function $$meta_add_field2(name, values) {
         var self = this, $writer = nil;
         if (self.metas == null) self.metas = nil;
         if (self.meta == null) self.meta = nil;
@@ -1271,120 +1037,103 @@ Opal.modules["open-uri"] = function(Opal) {
         name = name.$downcase();
         
         $writer = [name, values];
-        $send(self.metas, '[]=', Opal.to_a($writer));
+        $send(self.metas, '[]=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         
         $writer = [name, values.$join(", ")];
-        $send(self.meta, '[]=', Opal.to_a($writer));
+        $send(self.meta, '[]=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
-        if (name['$==']("content-type")) {
+        if ($eqeq(name, "content-type")) {
           return self.$meta_setup_encoding()
         } else {
           return nil
         };
-      }, $Meta_meta_add_field2$18.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$meta_add_field', $Meta_meta_add_field$19 = function $$meta_add_field(name, value) {
+      $def(self, '$meta_add_field', function $$meta_add_field(name, value) {
         var self = this;
 
         return self.$meta_add_field2(name, [value])
-      }, $Meta_meta_add_field$19.$$arity = 2);
+      }, 2);
       
-      Opal.def(self, '$last_modified', $Meta_last_modified$20 = function $$last_modified() {
+      $def(self, '$last_modified', function $$last_modified() {
         var self = this, vs = nil;
         if (self.metas == null) self.metas = nil;
 
         if ($truthy((vs = self.metas['$[]']("last-modified")))) {
-          return $$($nesting, 'Time').$at(Date.parse(vs.$join(", ")) / 1000).$utc()
+          return $$('Time').$at(Date.parse(vs.$join(", ")) / 1000).$utc()
         } else {
           return nil
         }
-      }, $Meta_last_modified$20.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$content_type_parse', $Meta_content_type_parse$21 = function $$content_type_parse() {
+      $def(self, '$content_type_parse', function $$content_type_parse() {
         var self = this, content_type = nil;
         if (self.metas == null) self.metas = nil;
 
         
         content_type = self.metas['$[]']("content-type");
         return content_type.$join(", ");
-      }, $Meta_content_type_parse$21.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$charset', $Meta_charset$22 = function $$charset() {
-        var self = this, type = nil, $ret_or_4 = nil, $ret_or_5 = nil, $ret_or_6 = nil;
+      $def(self, '$charset', function $$charset() {
+        var self = this, type = nil;
         if (self.base_uri == null) self.base_uri = nil;
 
         
         type = self.$content_type_parse();
-        if ($truthy((function() {if ($truthy(($ret_or_4 = (function() {if ($truthy(($ret_or_5 = (function() {if ($truthy(($ret_or_6 = type))) {
-          return /^text\//['$=~'](type)
-        } else {
-          return $ret_or_6
-        }; return nil; })()))) {
-          return self.base_uri
-        } else {
-          return $ret_or_5
-        }; return nil; })()))) {
-          return /^http$/i['$=~'](self.base_uri.$scheme())
-        } else {
-          return $ret_or_4
-        }; return nil; })())) {
+        if (((($truthy(type) && ($truthy(/^text\//['$=~'](type)))) && ($truthy(self.base_uri))) && ($truthy(/^http$/i['$=~'](self.base_uri.$scheme()))))) {
           return "iso-8859-1"
         } else {
           return nil
         };
-      }, $Meta_charset$22.$$arity = 0);
-      return (Opal.def(self, '$content_type', $Meta_content_type$23 = function $$content_type() {
-        var self = this, type = nil, $ret_or_7 = nil;
+      }, 0);
+      return $def(self, '$content_type', function $$content_type() {
+        var self = this, type = nil, $ret_or_1 = nil;
 
         
         type = self.$content_type_parse();
-        if ($truthy(($ret_or_7 = type))) {
-          return $ret_or_7
+        if ($truthy(($ret_or_1 = type))) {
+          return $ret_or_1
         } else {
           return "application/octet-stream"
         };
-      }, $Meta_content_type$23.$$arity = 0), nil) && 'content_type';
+      }, 0);
     })($nesting[0], $nesting);
     return (function($base, $parent_nesting) {
       var self = $module($base, 'OpenRead');
 
-      var $nesting = [self].concat($parent_nesting), $OpenRead_open$24, $OpenRead_read$25;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
       
-      Opal.def(self, '$open', $OpenRead_open$24 = function $$open($a) {
-        var $iter = $OpenRead_open$24.$$p, block = $iter || nil, $post_args, rest, self = this;
+      $def(self, '$open', function $$open($a) {
+        var block = $$open.$$p || nil, $post_args, rest, self = this;
 
-        if ($iter) $OpenRead_open$24.$$p = null;
+        delete $$open.$$p;
         
+        ;
         
-        if ($iter) $OpenRead_open$24.$$p = null;;
-        
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
+        $post_args = Opal.slice.call(arguments);
         
         rest = $post_args;;
-        return $send($$($nesting, 'OpenURI'), 'open_uri', [self].concat(Opal.to_a(rest)), block.$to_proc());
-      }, $OpenRead_open$24.$$arity = -1);
-      return (Opal.def(self, '$read', $OpenRead_read$25 = function $$read(options) {
-        var $$26, self = this;
+        return $send($$('OpenURI'), 'open_uri', [self].concat($to_a(rest)), block.$to_proc());
+      }, -1);
+      return $def(self, '$read', function $$read(options) {
+        var self = this;
 
         
         
-        if (options == null) {
-          options = $hash2([], {});
-        };
-        return $send(self, 'open', [options], ($$26 = function(f){var self = $$26.$$s == null ? this : $$26.$$s, str = nil;
+        if (options == null) options = $hash2([], {});;
+        return $send(self, 'open', [options], function $$4(f){var str = nil;
 
           
           
-          if (f == null) {
-            f = nil;
-          };
+          if (f == null) f = nil;;
           str = f.$read();
-          $$($nesting, 'Meta').$init(str, f);
-          return str;}, $$26.$$s = self, $$26.$$arity = 1, $$26));
-      }, $OpenRead_read$25.$$arity = -1), nil) && 'read';
+          $$('Meta').$init(str, f);
+          return str;}, 1);
+      }, -1);
     })($nesting[0], $nesting);
   })($nesting[0], $nesting);
 };
diff --git a/opal/master/open-uri.min.js b/opal/master/open-uri.min.js
index 6900c627..18b9755c 100644
--- a/opal/master/open-uri.min.js
+++ b/opal/master/open-uri.min.js
@@ -1 +1 @@
-Opal.modules.stringio=function(Opal){function $rb_gt(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?rhs<lhs:lhs["$>"](rhs)}function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}Opal.top;var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$klass=Opal.klass,$truthy=Opal.truthy,$alias=Opal.alias,$gvars=Opal.gvars;return Opal.add_stubs(["$include","$new","$call","$close","$attr_accessor","$length","$include?","$!","$check_readable","$==","$===","$>=","$raise","$>","$+","$-","$seek","$enum_for","$eof?","$ord","$[]","$to_str","$chomp","$check_writable","$String","$write","$closed_write?","$closed_read?"]),function($base,$StringIO_check_readable$19,$StringIO_check_writable$18){var $StringIO_open$1,$StringIO_each_byte$7,$StringIO_each_char$8,$StringIO_each$9,$StringIO_check_readable$19=$klass($base,$StringIO_check_readable$19,"StringIO"),$nesting=[$StringIO_check_readable$19].concat($StringIO_check_writable$18);return $StringIO_check_readable$19.$$prototype.position=$StringIO_check_readable$19.$$prototype.string=$StringIO_check_readable$19.$$prototype.closed=nil,$StringIO_check_readable$19.$include($$$($$($nesting,"IO"),"Readable")),$StringIO_check_readable$19.$include($$$($$($nesting,"IO"),"Writable")),Opal.defs($StringIO_check_readable$19,"$open",$StringIO_open$1=function(string,mode){var res,$iter=$StringIO_open$1.$$p,block=$iter||nil,io=nil;return $iter&&($StringIO_open$1.$$p=null),$iter&&($StringIO_open$1.$$p=null),null==string&&(string=""),null==mode&&(mode=nil),io=this.$new(string,mode),res=block.$call(io),io.$close(),res},$StringIO_open$1.$$arity=-1),$StringIO_check_readable$19.$attr_accessor("string"),Opal.def($StringIO_check_readable$19,"$initialize",$StringIO_check_writable$18=function(string,mode){var $ret_or_1=nil,$ret_or_2=nil;return null==string&&(string=""),null==mode&&(mode="rw"),this.string=string,this.position=string.$length(),$truthy($truthy($ret_or_1=mode["$include?"]("r"))?mode["$include?"]("w")["$!"]():$ret_or_1)?this.closed="write":$truthy($truthy($ret_or_2=mode["$include?"]("w"))?mode["$include?"]("r")["$!"]():$ret_or_2)?this.closed="read":nil},$StringIO_check_writable$18.$$arity=-1),Opal.def($StringIO_check_readable$19,"$eof?",$StringIO_check_writable$18=function(){return this.$check_readable(),this.position["$=="](this.string.$length())},$StringIO_check_writable$18.$$arity=0),$alias($StringIO_check_readable$19,"eof","eof?"),Opal.def($StringIO_check_readable$19,"$seek",$StringIO_check_writable$18=function(pos,lhs){var $case,rhs;return null==lhs&&(lhs=$$$($$($nesting,"IO"),"SEEK_SET")),$case=lhs,$$$($$($nesting,"IO"),"SEEK_SET")["$==="]($case)?($truthy((rhs=0,"number"==typeof(lhs=pos)&&"number"==typeof rhs?rhs<=lhs:lhs["$>="](rhs)))||this.$raise($$$($$($nesting,"Errno"),"EINVAL")),this.position=pos):$$$($$($nesting,"IO"),"SEEK_CUR")["$==="]($case)?$truthy($rb_gt($rb_plus(this.position,pos),this.string.$length()))?this.position=this.string.$length():this.position=$rb_plus(this.position,pos):$$$($$($nesting,"IO"),"SEEK_END")["$==="]($case)&&($truthy($rb_gt(pos,this.string.$length()))?this.position=0:this.position=$rb_minus(this.position,pos)),0},$StringIO_check_writable$18.$$arity=-2),Opal.def($StringIO_check_readable$19,"$tell",$StringIO_check_writable$18=function(){return this.position},$StringIO_check_writable$18.$$arity=0),$alias($StringIO_check_readable$19,"pos","tell"),$alias($StringIO_check_readable$19,"pos=","seek"),Opal.def($StringIO_check_readable$19,"$rewind",$StringIO_check_writable$18=function(){return this.$seek(0)},$StringIO_check_writable$18.$$arity=0),Opal.def($StringIO_check_readable$19,"$each_byte",$StringIO_each_byte$7=function(){var $iter=$StringIO_each_byte$7.$$p,block=$iter||nil,i=nil;if($iter&&($StringIO_each_byte$7.$$p=null),$iter&&($StringIO_each_byte$7.$$p=null),!$truthy(block))return this.$enum_for("each_byte");for(this.$check_readable(),i=this.position;!$truthy(this["$eof?"]());)block.$call(this.string["$[]"](i).$ord()),i=$rb_plus(i,1);return this},$StringIO_each_byte$7.$$arity=0),Opal.def($StringIO_check_readable$19,"$each_char",$StringIO_each_char$8=function(){var $iter=$StringIO_each_char$8.$$p,block=$iter||nil,i=nil;if($iter&&($StringIO_each_char$8.$$p=null),$iter&&($StringIO_each_char$8.$$p=null),!$truthy(block))return this.$enum_for("each_char");for(this.$check_readable(),i=this.position;!$truthy(this["$eof?"]());)block.$call(this.string["$[]"](i)),i=$rb_plus(i,1);return this},$StringIO_each_char$8.$$arity=0),Opal.def($StringIO_check_readable$19,"$each",$StringIO_each$9=function(separator){var chomped=$StringIO_each$9.$$p,$yield=chomped||nil,chomp_lines=nil;if(null==$gvars["/"]&&($gvars["/"]=nil),chomped&&($StringIO_each$9.$$p=null),null==separator&&(separator=$gvars["/"]),$yield===nil)return this.$enum_for("each_line");this.$check_readable(),chomp_lines=!1,separator=$truthy($$$("::","Hash")["$==="](separator))?$truthy(chomp_lines=separator["$[]"]("chomp"))?/\r?\n/:$gvars["/"]:$truthy(separator)?separator.$to_str():void 0;var str=this.string,stringLength=str.length;if(this.position<stringLength&&(str=str.substr(this.position)),separator)for(var chomped=str.$chomp(),trailing=str.length!==chomped.length,splitted=chomped.split(separator),i=0,len=splitted.length;i<len;i++){var line=!chomp_lines&&(i<len-1||trailing)?splitted[i]+separator:splitted[i];Opal.yield1($yield,line)}else if(void 0===separator)Opal.yield1($yield,str);else for(var m,re=/(.+(?:\n\n|$))\n*/g;m=re.exec(str);)Opal.yield1($yield,m[1]);return this.position=stringLength,this},$StringIO_each$9.$$arity=-1),$alias($StringIO_check_readable$19,"each_line","each"),Opal.def($StringIO_check_readable$19,"$write",$StringIO_check_writable$18=function(string){var before,after;return this.$check_writable(),string=this.$String(string),this.string.$length()["$=="](this.position)?this.string=$rb_plus(this.string,string):(before=this.string["$[]"](Opal.Range.$new(0,$rb_minus(this.position,1),!1)),after=this.string["$[]"](Opal.Range.$new($rb_plus(this.position,string.$length()),-1,!1)),this.string=$rb_plus($rb_plus(before,string),after)),this.position=$rb_plus(this.position,string.$length())},$StringIO_check_writable$18.$$arity=1),Opal.def($StringIO_check_readable$19,"$read",$StringIO_check_writable$18=function(length,outbuf){var self=this,string=nil,str=nil;return null==length&&(length=nil),null==outbuf&&(outbuf=nil),self.$check_readable(),$truthy(self["$eof?"]())?nil:($truthy(length)?(str=self.string["$[]"](self.position,length),self.position=$rb_plus(self.position,length)):(str=self.string["$[]"](Opal.Range.$new(self.position,-1,!1)),self.position=self.string.$length()),string=str,$truthy(outbuf)?outbuf.$write(string):string)},$StringIO_check_writable$18.$$arity=-1),Opal.def($StringIO_check_readable$19,"$close",$StringIO_check_writable$18=function(){return this.closed="both"},$StringIO_check_writable$18.$$arity=0),Opal.def($StringIO_check_readable$19,"$close_read",$StringIO_check_writable$18=function(){return this.closed["$=="]("write")?this.closed="both":this.closed="read"},$StringIO_check_writable$18.$$arity=0),Opal.def($StringIO_check_readable$19,"$close_write",$StringIO_check_writable$18=function(){return this.closed["$=="]("read")?this.closed="both":this.closed="write"},$StringIO_check_writable$18.$$arity=0),Opal.def($StringIO_check_readable$19,"$closed?",$StringIO_check_writable$18=function(){return this.closed["$=="]("both")},$StringIO_check_writable$18.$$arity=0),Opal.def($StringIO_check_readable$19,"$closed_read?",$StringIO_check_writable$18=function(){var $ret_or_3;return $truthy($ret_or_3=this.closed["$=="]("read"))?$ret_or_3:this.closed["$=="]("both")},$StringIO_check_writable$18.$$arity=0),Opal.def($StringIO_check_readable$19,"$closed_write?",$StringIO_check_writable$18=function(){var $ret_or_4;return $truthy($ret_or_4=this.closed["$=="]("write"))?$ret_or_4:this.closed["$=="]("both")},$StringIO_check_writable$18.$$arity=0),Opal.def($StringIO_check_readable$19,"$check_writable",$StringIO_check_writable$18=function(){return $truthy(this["$closed_write?"]())?this.$raise($$($nesting,"IOError"),"not opened for writing"):nil},$StringIO_check_writable$18.$$arity=0),Opal.def($StringIO_check_readable$19,"$check_readable",$StringIO_check_readable$19=function(){return $truthy(this["$closed_read?"]())?this.$raise($$($nesting,"IOError"),"not opened for reading"):nil},$StringIO_check_readable$19.$$arity=0),nil&&"check_readable"}($nesting[0],$$($nesting,"IO"),$nesting)},Opal.modules["corelib/pack_unpack/format_string_parser"]=function(Opal){Opal.top;var $nesting=[],$$=(Opal.nil,Opal.$$$,Opal.$$),$module=Opal.module;return Opal.add_stubs(["$raise"]),function($base,$parent_nesting){var self=$module($base,"PackUnpack"),$nesting=[self].concat($parent_nesting),directives=["C","S","L","Q","J","c","s","l","q","j","n","N","v","V","U","w","D","d","F","f","E","e","G","g","A","a","Z","B","b","H","h","u","M","m","P","p","@","X","x"],modifiers=["!","_",">","<"];self.eachDirectiveAndCount=function(format,callback){var currentDirective,currentCount,currentModifiers,countSpecified;function reset(){currentDirective=null,currentCount=0,countSpecified=!(currentModifiers=[])}function yieldAndReset(){null!=currentDirective&&(!/[sSiIlLqQjJ]/.test(currentDirective)&&0<currentModifiers.length&&self.$raise($$($nesting,"ArgumentError"),"'"+currentModifiers[0]+"' allowed only after types sSiIlLqQjJ"),-1!==currentModifiers.indexOf("<")&&-1!==currentModifiers.indexOf(">")&&self.$raise($$($nesting,"RangeError"),"Can't use both '<' and '>'"),countSpecified||(currentCount=1),-1!==currentModifiers.indexOf(">")&&(currentDirective+=">"),callback(currentDirective,currentCount)),reset()}reset();for(var i=0;i<format.length;i++){var currentChar=format[i];-1!==directives.indexOf(currentChar)?(yieldAndReset(),currentDirective=currentChar):currentDirective&&(/\d/.test(currentChar)?(currentCount=10*currentCount+parseInt(currentChar,10),countSpecified=!0):"*"===currentChar&&!1===countSpecified?(currentCount=1/0,countSpecified=!0):-1!==modifiers.indexOf(currentChar)&&!1===countSpecified?currentModifiers.push(currentChar):yieldAndReset())}yieldAndReset()}}($nesting[0],$nesting)},Opal.modules["corelib/array/pack"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$coerce_to=Opal.coerce_to,$klass=Opal.klass;return Opal.add_stubs(["$require","$raise","$delete","$gsub","$coerce_to!","$inspect"]),self.$require("corelib/pack_unpack/format_string_parser"),function($base,$Array_pack$1){var self=$klass($base,null,"Array"),$nesting=[self].concat($Array_pack$1),eachDirectiveAndCount=Opal.PackUnpack.eachDirectiveAndCount;function identityFunction(value){return value}function asciiBytesToUtf16LEString(bytes){return String.fromCharCode.apply(null,bytes)}function asciiStringFromUnsignedInt(bytes,callback){return function(data){return callback(data).map(function(item){for(var result=[],i=0;i<bytes;i++){var bit=255&item;result.push(bit),item>>=8}return asciiBytesToUtf16LEString(result)})}}function asciiStringFromSignedInt(bytes,callback){return function(bits){var buffer=callback(bits),bits=8*bytes,limit=Math.pow(2,bits);return buffer.map(function(item){item<0&&(item+=limit);for(var result=[],i=0;i<bytes;i++){var bit=255&item;result.push(bit),item>>=8}return asciiBytesToUtf16LEString(result)})}}function toInt(callback){return function(data){return callback(data).map(function(item){return $coerce_to(item,$$($nesting,"Integer"),"to_int")})}}function joinChars(callback){return function(data){return callback(data).join("")}}var callback,handlers={C:joinChars(asciiStringFromUnsignedInt(1,toInt(identityFunction))),S:joinChars(asciiStringFromUnsignedInt(2,toInt(identityFunction))),L:joinChars(asciiStringFromUnsignedInt(4,toInt(identityFunction))),Q:joinChars(asciiStringFromUnsignedInt(8,toInt(identityFunction))),J:null,"S>":null,"L>":null,"Q>":null,c:joinChars(asciiStringFromSignedInt(1,toInt(identityFunction))),s:joinChars(asciiStringFromSignedInt(2,toInt(identityFunction))),l:joinChars(asciiStringFromSignedInt(4,toInt(identityFunction))),q:joinChars(asciiStringFromSignedInt(8,toInt(identityFunction))),j:null,"s>":null,"l>":null,"q>":null,n:null,N:null,v:null,V:null,U:joinChars((callback=toInt(identityFunction),function(data){return callback(data).map(function(item){try{return String.fromCodePoint(item)}catch(error){throw error instanceof RangeError&&self.$raise($$($nesting,"RangeError"),"value out of range"),error}})})),w:null,D:null,d:null,F:null,f:null,E:null,e:null,G:null,g:null,A:joinChars(identityFunction),a:joinChars(identityFunction),Z:null,B:null,b:null,H:null,h:null,u:null,M:null,m:null,P:null,p:null};function readNTimesFromBufferAndMerge(callback){return function(buffer,count){var chunkData,chunk=[];if(count===1/0)for(;0<buffer.length;)buffer=(chunkData=callback(buffer)).rest,chunk=chunk.concat(chunkData.chunk);else{buffer.length<count&&self.$raise($$($nesting,"ArgumentError"),"too few arguments");for(var i=0;i<count;i++)buffer=(chunkData=callback(buffer)).rest,chunk=chunk.concat(chunkData.chunk)}return{chunk:chunk,rest:buffer}}}function readItem(buffer){return{chunk:buffer.slice(0,1),rest:buffer=buffer.slice(1,buffer.length)}}function readNCharsFromTheFirstItemAndMergeWithFallback(fallback,callback){return function(buffer,count){var subChunk,chunk=[],source=buffer[0];if(source===nil?source="":void 0===source?self.$raise($$($nesting,"ArgumentError"),"too few arguments"):source=$coerce_to(source,$$($nesting,"String"),"to_str"),buffer=buffer.slice(1,buffer.length),count===1/0)for(;0<source.length;)subChunk=void 0,subChunk=callback(source),source=subChunk.rest,1===(subChunk=subChunk.chunk).length&&subChunk[0]===nil&&(subChunk=[]),chunk=chunk.concat(subChunk);else for(var i=0;i<count;i++)!function(){var subChunk=callback(source);source=subChunk.rest,0===(subChunk=subChunk.chunk).length&&(subChunk=[fallback]),1===subChunk.length&&subChunk[0]===nil&&(subChunk=[fallback]),chunk=chunk.concat(subChunk)}();return{chunk:chunk,rest:buffer}}}var readChunk={C:readNTimesFromBufferAndMerge(readItem),S:readNTimesFromBufferAndMerge(readItem),L:readNTimesFromBufferAndMerge(readItem),Q:readNTimesFromBufferAndMerge(readItem),J:null,"S>":null,"L>":null,"Q>":null,c:readNTimesFromBufferAndMerge(readItem),s:readNTimesFromBufferAndMerge(readItem),l:readNTimesFromBufferAndMerge(readItem),q:readNTimesFromBufferAndMerge(readItem),j:null,"s>":null,"l>":null,"q>":null,n:null,N:null,v:null,V:null,U:readNTimesFromBufferAndMerge(readItem),w:null,D:null,d:null,F:null,f:null,E:null,e:null,G:null,g:null,A:readNCharsFromTheFirstItemAndMergeWithFallback(" ",readItem),a:readNCharsFromTheFirstItemAndMergeWithFallback("\0",readItem),Z:null,B:null,b:null,H:null,h:null,u:null,M:null,m:null,P:null,p:null},autocompletion={C:!1,S:!1,L:!1,Q:!1,J:null,"S>":null,"L>":null,"Q>":null,c:!1,s:!1,l:!1,q:!1,j:null,"s>":null,"l>":null,"q>":null,n:null,N:null,v:null,V:null,U:!1,w:null,D:null,d:null,F:null,f:null,E:null,e:null,G:null,g:null,A:!1,a:!1,Z:null,B:null,b:null,H:null,h:null,u:!1,M:null,m:null,P:null,p:null};return Opal.def(self,"$pack",$Array_pack$1=function(format){var self=this;format=$$($nesting,"Opal")["$coerce_to!"](format,$$($nesting,"String"),"to_str").$gsub(/\s/,"").$delete("\0");var output="",buffer=self.slice();return eachDirectiveAndCount(format,function(directive,count){var shouldAutocomplete,part=function(directive,chunk){var handler=readChunk[directive];return null==handler&&self.$raise("Unsupported pack directive "+directive.$inspect()+" (no chunk reader defined)"),handler=handler(buffer,chunk),chunk=handler.chunk,buffer=handler.rest,null==(handler=handlers[directive])&&self.$raise("Unsupported pack directive "+directive.$inspect()+" (no handler defined)"),handler(chunk)}(directive,count);count!==1/0&&(null==(shouldAutocomplete=autocompletion[directive])&&self.$raise("Unsupported pack directive "+directive.$inspect()+" (no autocompletion rule defined)"),shouldAutocomplete&&function(array,size){for(;array.length<size;)array.push(nil)}(part,count)),output=output.concat(part)}),format.match(/^(U\*?)+$/)?output:Opal.enc(output,"binary")},$Array_pack$1.$$arity=1),nil&&"pack"}($nesting[0],$nesting)},Opal.modules["open-uri"]=function(Opal){function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module,$alias=Opal.alias,$truthy=Opal.truthy,$send=Opal.send,$hash2=Opal.hash2,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super;return Opal.add_stubs(["$require","$private","$respond_to?","$=~","$open_uri","$to_proc","$open_uri_original_open","$module_function","$open_loop","$rewind","$close_io","$close!","$closed?","$close","$request","$==","$build_response","$raise","$new","$<<","$pack","$data","$io","$status=","$-","$meta_add_field","$attr_reader","$+","$length","$===","$init","$extend","$instance_eval","$status","$base_uri","$base_uri=","$each","$metas","$meta_add_field2","$attr_accessor","$charset","$find_encoding","$set_encoding","$force_encoding","$string","$find","$downcase","$[]=","$join","$meta_setup_encoding","$[]","$utc","$at","$content_type_parse","$scheme","$open","$read"]),self.$require("stringio"),self.$require("corelib/array/pack"),function(self,$parent_nesting){var $Kernel_open$1,$nesting=[self=$module(self,"Kernel")].concat($parent_nesting);self.$private(),$alias(self,"open_uri_original_open","open"),function(self,$parent_nesting){[self].concat($parent_nesting),$alias(self,"open_uri_original_open","open")}(Opal.get_singleton_class(self),$nesting),Opal.def(self,"$open",$Kernel_open$1=function(name,$a){var rest=$Kernel_open$1.$$p,block=rest||nil,$ret_or_1=nil;return rest&&($Kernel_open$1.$$p=null),rest&&($Kernel_open$1.$$p=null),rest=Opal.slice.call(arguments,1,arguments.length),$truthy($truthy($ret_or_1=name["$respond_to?"]("to_str"))?/^[A-Za-z][A-Za-z0-9+\-\.]*:\/\//["$=~"](name):$ret_or_1)?$send($$($nesting,"OpenURI"),"open_uri",[name].concat(Opal.to_a(rest)),block.$to_proc()):$send(this,"open_uri_original_open",[name].concat(Opal.to_a(rest)),block.$to_proc())},$Kernel_open$1.$$arity=-2),self.$module_function("open")}($nesting[0],$nesting),function($OpenURI_request$7,$OpenURI_data$6){var $OpenURI_open_uri$2,$OpenURI_request$7=$module($OpenURI_request$7,"OpenURI"),$nesting=[$OpenURI_request$7].concat($OpenURI_data$6);return Opal.defs($OpenURI_request$7,"$open_uri",$OpenURI_open_uri$2=function(name,$a){var $iter=$OpenURI_open_uri$2.$$p,$yield=$iter||nil,self=this,io=nil;return $iter&&($OpenURI_open_uri$2.$$p=null),Opal.slice.call(arguments,1,arguments.length),(io=self.$open_loop(name,$hash2([],{}))).$rewind(),$yield!==nil?function(){try{return Opal.yield1($yield,io)}finally{self.$close_io(io)}}():io},$OpenURI_open_uri$2.$$arity=-2),Opal.defs($OpenURI_request$7,"$close_io",$OpenURI_data$6=function(io){return $truthy(io["$respond_to?"]("close!"))?io["$close!"]():$truthy(io["$closed?"]())?nil:io.$close()},$OpenURI_data$6.$$arity=1),Opal.defs($OpenURI_request$7,"$open_loop",$OpenURI_data$6=function(uri){var req=nil,status=nil,$ret_or_2=nil,$ret_or_3=nil,data=(req=this.$request(uri)).responseText,status=req.status,status_text=req.statusText&&req.statusText.errno?req.statusText.errno:req.statusText;return $truthy($truthy($ret_or_2=status["$=="](200))?$ret_or_2:$truthy($ret_or_3=status["$=="](0))?data:$ret_or_3)?this.$build_response(req,status,status_text):this.$raise($$$($$($nesting,"OpenURI"),"HTTPError").$new(status+" "+status_text,""))},$OpenURI_data$6.$$arity=2),Opal.defs($OpenURI_request$7,"$build_response",$OpenURI_data$6=function(req,status,status_text){var $writer,last_modified,buf=nil,io=nil;return(buf=$$($nesting,"Buffer").$new())["$<<"](this.$data(req).$pack("c*")),io=buf.$io(),$writer=[status+" "+status_text],$send(io,"status=",Opal.to_a($writer)),$rb_minus($writer.length,1),io.$meta_add_field("content-type",req.getResponseHeader("Content-Type")||""),last_modified=req.getResponseHeader("Last-Modified"),$truthy(last_modified)&&io.$meta_add_field("last-modified",last_modified),io},$OpenURI_data$6.$$arity=3),Opal.defs($OpenURI_request$7,"$data",$OpenURI_data$6=function(req){for(var binStr=req.responseText,byteArray=[],i=0,len=binStr.length;i<len;++i){var byteCode=255&binStr.charCodeAt(i);byteArray.push(byteCode)}return byteArray},$OpenURI_data$6.$$arity=1),Opal.defs($OpenURI_request$7,"$request",$OpenURI_request$7=function(uri){try{var xhr=new XMLHttpRequest;return xhr.open("GET",uri,!1),xhr.overrideMimeType("text/plain; charset=x-user-defined"),xhr.send(),xhr}catch(error){this.$raise($$$($$($nesting,"OpenURI"),"HTTPError").$new(error.message,""))}},$OpenURI_request$7.$$arity=1),function($base,self,$parent_nesting){var $HTTPError_initialize$8;[self=$klass($base,self,"HTTPError")].concat($parent_nesting),Opal.def(self,"$initialize",$HTTPError_initialize$8=function(message,io){var $iter=$HTTPError_initialize$8.$$p;return $iter&&($HTTPError_initialize$8.$$p=null),$send2(this,$find_super(this,"initialize",$HTTPError_initialize$8,!1,!0),"initialize",[message,io],null),this.io=io},$HTTPError_initialize$8.$$arity=2),self.$attr_reader("io")}($nesting[0],$$($nesting,"StandardError"),$nesting),function($Buffer_io$11,$Buffer_$lt$lt$10){var $nesting=[$Buffer_io$11=$klass($Buffer_io$11,null,"Buffer")].concat($Buffer_$lt$lt$10);$Buffer_io$11.$$prototype.io=$Buffer_io$11.$$prototype.size=nil,Opal.def($Buffer_io$11,"$initialize",$Buffer_$lt$lt$10=function(){return this.io=$$($nesting,"StringIO").$new(),this.size=0},$Buffer_$lt$lt$10.$$arity=0),$Buffer_io$11.$attr_reader("size"),Opal.def($Buffer_io$11,"$<<",$Buffer_$lt$lt$10=function(rhs){var lhs;return this.io["$<<"](rhs),this.size=(lhs=this.size,rhs=rhs.$length(),"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs))},$Buffer_$lt$lt$10.$$arity=1),Opal.def($Buffer_io$11,"$io",$Buffer_io$11=function(){return $truthy($$($nesting,"Meta")["$==="](this.io))||$$($nesting,"Meta").$init(this.io),this.io},$Buffer_io$11.$$arity=0)}($nesting[0],$nesting),function($Meta_content_type$23,$Meta_charset$22){var $nesting=[$Meta_content_type$23=$module($Meta_content_type$23,"Meta")].concat($Meta_charset$22);Opal.defs($$($nesting,"Meta"),"$init",$Meta_charset$22=function(obj,src){var $$13,$$14,$writer;return null==src&&(src=nil),obj.$extend($$($nesting,"Meta")),$send(obj,"instance_eval",[],(($$13=function(){var self=null==$$13.$$s?this:$$13.$$s;return self.base_uri=nil,self.meta=$hash2([],{}),self.metas=$hash2([],{})}).$$s=this,$$13.$$arity=0,$$13)),$truthy(src)?($writer=[src.$status()],$send(obj,"status=",Opal.to_a($writer)),$rb_minus($writer.length,1),$writer=[src.$base_uri()],$send(obj,"base_uri=",Opal.to_a($writer)),$rb_minus($writer.length,1),$send(src.$metas(),"each",[],(($$14=function(name,values){null==$$14.$$s||$$14.$$s;return null==name&&(name=nil),null==values&&(values=nil),obj.$meta_add_field2(name,values)}).$$s=this,$$14.$$arity=2,$$14))):nil},$Meta_charset$22.$$arity=-2),$Meta_content_type$23.$attr_accessor("status"),$Meta_content_type$23.$attr_accessor("base_uri"),$Meta_content_type$23.$attr_reader("meta"),$Meta_content_type$23.$attr_reader("metas"),Opal.def($Meta_content_type$23,"$meta_setup_encoding",$Meta_charset$22=function(){var charset=this.$charset(),enc=this.$find_encoding(charset);return this.$set_encoding(enc)},$Meta_charset$22.$$arity=0),Opal.def($Meta_content_type$23,"$set_encoding",$Meta_charset$22=function(enc){return $truthy(this["$respond_to?"]("force_encoding"))?this.$force_encoding(enc):$truthy(this["$respond_to?"]("string"))?this.$string().$force_encoding(enc):this.$set_encoding(enc)},$Meta_charset$22.$$arity=1),Opal.def($Meta_content_type$23,"$find_encoding",$Meta_charset$22=function(charset){var enc=nil,enc=nil;if($truthy(charset))try{enc=$$($nesting,"Encoding").$find(charset)}catch($err){if(!Opal.rescue($err,[$$($nesting,"ArgumentError")]))throw $err;Opal.pop_exception()}return $truthy(enc)||(enc=$$$($$($nesting,"Encoding"),"ASCII_8BIT")),enc},$Meta_charset$22.$$arity=1),Opal.def($Meta_content_type$23,"$meta_add_field2",$Meta_charset$22=function(name,values){var $writer;return null==this.metas&&(this.metas=nil),null==this.meta&&(this.meta=nil),$writer=[name=name.$downcase(),values],$send(this.metas,"[]=",Opal.to_a($writer)),$rb_minus($writer.length,1),$writer=[name,values.$join(", ")],$send(this.meta,"[]=",Opal.to_a($writer)),$rb_minus($writer.length,1),name["$=="]("content-type")?this.$meta_setup_encoding():nil},$Meta_charset$22.$$arity=2),Opal.def($Meta_content_type$23,"$meta_add_field",$Meta_charset$22=function(name,value){return this.$meta_add_field2(name,[value])},$Meta_charset$22.$$arity=2),Opal.def($Meta_content_type$23,"$last_modified",$Meta_charset$22=function(){var vs=nil;return null==this.metas&&(this.metas=nil),$truthy(vs=this.metas["$[]"]("last-modified"))?$$($nesting,"Time").$at(Date.parse(vs.$join(", "))/1e3).$utc():nil},$Meta_charset$22.$$arity=0),Opal.def($Meta_content_type$23,"$content_type_parse",$Meta_charset$22=function(){return null==this.metas&&(this.metas=nil),this.metas["$[]"]("content-type").$join(", ")},$Meta_charset$22.$$arity=0),Opal.def($Meta_content_type$23,"$charset",$Meta_charset$22=function(){var type,self=this,$ret_or_4=nil,$ret_or_5=nil,$ret_or_6=nil;return null==self.base_uri&&(self.base_uri=nil),type=self.$content_type_parse(),$truthy($truthy($ret_or_4=$truthy($ret_or_5=$truthy($ret_or_6=type)?/^text\//["$=~"](type):$ret_or_6)?self.base_uri:$ret_or_5)?/^http$/i["$=~"](self.base_uri.$scheme()):$ret_or_4)?"iso-8859-1":nil},$Meta_charset$22.$$arity=0),Opal.def($Meta_content_type$23,"$content_type",$Meta_content_type$23=function(){var $ret_or_7,type=this.$content_type_parse();return $truthy($ret_or_7=type)?$ret_or_7:"application/octet-stream"},$Meta_content_type$23.$$arity=0)}($nesting[0],$nesting),function($OpenRead_read$25,$parent_nesting){var $OpenRead_open$24,$OpenRead_read$25=$module($OpenRead_read$25,"OpenRead"),$nesting=[$OpenRead_read$25].concat($parent_nesting);return Opal.def($OpenRead_read$25,"$open",$OpenRead_open$24=function($a){var rest=$OpenRead_open$24.$$p,block=rest||nil,self=this;return rest&&($OpenRead_open$24.$$p=null),rest&&($OpenRead_open$24.$$p=null),rest=Opal.slice.call(arguments,0,arguments.length),$send($$($nesting,"OpenURI"),"open_uri",[self].concat(Opal.to_a(rest)),block.$to_proc())},$OpenRead_open$24.$$arity=-1),Opal.def($OpenRead_read$25,"$read",$OpenRead_read$25=function(options){var $$26;return null==options&&(options=$hash2([],{})),$send(this,"open",[options],(($$26=function(f){var str;null==$$26.$$s||$$26.$$s;return null==f&&(f=nil),str=f.$read(),$$($nesting,"Meta").$init(str,f),str}).$$s=this,$$26.$$arity=1,$$26))},$OpenRead_read$25.$$arity=-1),nil&&"read"}($nesting[0],$nesting)}($nesting[0],$nesting)};
+Opal.modules.stringio=function(Opal){var $nesting=[],$$=Opal.$r($nesting),nil=Opal.nil,$$$=Opal.$$$,$klass=Opal.klass,$defs=Opal.defs,$send2=Opal.send2,$find_super=Opal.find_super,$def=Opal.def,$eqeqeq=Opal.eqeqeq,$truthy=Opal.truthy,$rb_ge=Opal.rb_ge,$rb_gt=Opal.rb_gt,$rb_plus=Opal.rb_plus,$rb_minus=Opal.rb_minus,$eqeq=Opal.eqeq,$alias=Opal.alias;return Opal.add_stubs("new,call,close,attr_accessor,check_readable,==,length,===,>=,raise,>,+,-,seek,check_writable,String,[],eof?,write,read"),function($base,$super,$parent_nesting){var self=$klass($base,$super,"StringIO"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;return $proto.position=$proto.string=nil,$defs(self,"$open",(function $$open(string,mode){var res,block=$$open.$$p||nil,io=nil;return delete $$open.$$p,null==string&&(string=""),null==mode&&(mode=nil),io=this.$new(string,mode),res=block.$call(io),io.$close(),res}),-1),self.$attr_accessor("string"),$def(self,"$initialize",(function $$initialize(string,mode){return delete $$initialize.$$p,null==string&&(string=""),null==mode&&(mode="rw"),this.string=string,this.position=0,$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[nil,mode],null)}),-1),$def(self,"$eof?",(function(){return this.$check_readable(),this.position["$=="](this.string.$length())}),0),$def(self,"$seek",(function(pos,whence){var $ret_or_1;return null==whence&&(whence=$$$($$("IO"),"SEEK_SET")),this.read_buffer="",$eqeqeq($$$($$("IO"),"SEEK_SET"),$ret_or_1=whence)?($truthy($rb_ge(pos,0))||this.$raise($$$($$("Errno"),"EINVAL")),this.position=pos):$eqeqeq($$$($$("IO"),"SEEK_CUR"),$ret_or_1)?$truthy($rb_gt($rb_plus(this.position,pos),this.string.$length()))?this.position=this.string.$length():this.position=$rb_plus(this.position,pos):$eqeqeq($$$($$("IO"),"SEEK_END"),$ret_or_1)&&($truthy($rb_gt(pos,this.string.$length()))?this.position=0:this.position=$rb_minus(this.position,pos)),0}),-2),$def(self,"$tell",(function(){return this.position}),0),$def(self,"$rewind",(function(){return this.$seek(0)}),0),$def(self,"$write",(function(string){var before=nil,after=nil;return this.$check_writable(),this.read_buffer="",string=this.$String(string),$eqeq(this.string.$length(),this.position)?(this.string=$rb_plus(this.string,string),this.position=$rb_plus(this.position,string.$length())):(before=this.string["$[]"](Opal.Range.$new(0,$rb_minus(this.position,1),!1)),after=this.string["$[]"](Opal.Range.$new($rb_plus(this.position,string.$length()),-1,!1)),this.string=$rb_plus($rb_plus(before,string),after),this.position=$rb_plus(this.position,string.$length()))}),1),$def(self,"$read",(function(length,outbuf){var string,str=nil;return null==length&&(length=nil),null==outbuf&&(outbuf=nil),this.$check_readable(),$truthy(this["$eof?"]())?nil:(string=$truthy(length)?(str=this.string["$[]"](this.position,length),this.position=$rb_plus(this.position,length),$truthy($rb_gt(this.position,this.string.$length()))&&(this.position=this.string.$length()),str):(str=this.string["$[]"](Opal.Range.$new(this.position,-1,!1)),this.position=this.string.$length(),str),$truthy(outbuf)?outbuf.$write(string):string)}),-1),$def(self,"$sysread",(function(length){return this.$check_readable(),this.$read(length)}),1),$alias(self,"eof","eof?"),$alias(self,"pos","tell"),$alias(self,"pos=","seek"),$alias(self,"readpartial","read")}($nesting[0],$$("IO"),$nesting)},Opal.modules["corelib/pack_unpack/format_string_parser"]=function(Opal){Opal.nil;var self,directives,modifiers,$$$=Opal.$$$,$module=Opal.module,$Kernel=Opal.Kernel;return Opal.add_stubs("raise"),self=$module("::","PackUnpack"),directives=["C","S","L","Q","J","c","s","l","q","j","n","N","v","V","U","w","D","d","F","f","E","e","G","g","A","a","Z","B","b","H","h","u","M","m","P","p","@","X","x"],modifiers=["!","_",">","<"],void(self.eachDirectiveAndCount=function(format,callback){var currentDirective,currentCount,currentModifiers,countSpecified;function reset(){currentDirective=null,currentCount=0,currentModifiers=[],countSpecified=!1}function yieldAndReset(){null!=currentDirective?(!/[sSiIlLqQjJ]/.test(currentDirective)&&currentModifiers.length>0&&$Kernel.$raise($$$("ArgumentError"),"'"+currentModifiers[0]+"' allowed only after types sSiIlLqQjJ"),-1!==currentModifiers.indexOf("<")&&-1!==currentModifiers.indexOf(">")&&$Kernel.$raise($$$("RangeError"),"Can't use both '<' and '>'"),countSpecified||(currentCount=1),-1!==currentModifiers.indexOf(">")&&(currentDirective+=">"),callback(currentDirective,currentCount),reset()):reset()}reset();for(var i=0;i<format.length;i++){var currentChar=format[i];-1!==directives.indexOf(currentChar)?(yieldAndReset(),currentDirective=currentChar):currentDirective&&(/\d/.test(currentChar)?(currentCount=10*currentCount+parseInt(currentChar,10),countSpecified=!0):"*"===currentChar&&!1===countSpecified?(currentCount=1/0,countSpecified=!0):-1!==modifiers.indexOf(currentChar)&&!1===countSpecified?currentModifiers.push(currentChar):yieldAndReset())}yieldAndReset()})},Opal.modules["corelib/array/pack"]=function(Opal){var self=Opal.top,nil=Opal.nil,$$$=Opal.$$$,$coerce_to=Opal.coerce_to,$klass=Opal.klass,$Kernel=Opal.Kernel,$Opal=Opal.Opal,$def=Opal.def;return Opal.add_stubs("require,raise,delete,gsub,coerce_to!,inspect"),self.$require("corelib/pack_unpack/format_string_parser"),function($base,$super){var self=$klass("::",null,"Array"),eachDirectiveAndCount=Opal.PackUnpack.eachDirectiveAndCount;function identityFunction(value){return value}function asciiBytesToUtf16LEString(bytes){return String.fromCharCode.apply(null,bytes)}function asciiStringFromUnsignedInt(bytes,callback){return function(data){return callback(data).map((function(item){for(var result=[],i=0;i<bytes;i++){var bit=255&item;result.push(bit),item>>=8}return asciiBytesToUtf16LEString(result)}))}}function asciiStringFromSignedInt(bytes,callback){return function(data){var buffer=callback(data),bits=8*bytes,limit=Math.pow(2,bits);return buffer.map((function(item){item<0&&(item+=limit);for(var result=[],i=0;i<bytes;i++){var bit=255&item;result.push(bit),item>>=8}return asciiBytesToUtf16LEString(result)}))}}function toInt(callback){return function(data){return callback(data).map((function(item){return $coerce_to(item,$$$("Integer"),"to_int")}))}}function joinChars(callback){return function(data){return callback(data).join("")}}var callback,handlers={C:joinChars(asciiStringFromUnsignedInt(1,toInt(identityFunction))),S:joinChars(asciiStringFromUnsignedInt(2,toInt(identityFunction))),L:joinChars(asciiStringFromUnsignedInt(4,toInt(identityFunction))),Q:joinChars(asciiStringFromUnsignedInt(8,toInt(identityFunction))),J:null,"S>":null,"L>":null,"Q>":null,c:joinChars(asciiStringFromSignedInt(1,toInt(identityFunction))),s:joinChars(asciiStringFromSignedInt(2,toInt(identityFunction))),l:joinChars(asciiStringFromSignedInt(4,toInt(identityFunction))),q:joinChars(asciiStringFromSignedInt(8,toInt(identityFunction))),j:null,"s>":null,"l>":null,"q>":null,n:null,N:null,v:null,V:null,U:joinChars((callback=toInt(identityFunction),function(data){return callback(data).map((function(item){try{return String.fromCodePoint(item)}catch(error){throw error instanceof RangeError&&$Kernel.$raise($$$("RangeError"),"value out of range"),error}}))})),w:null,D:null,d:null,F:null,f:null,E:null,e:null,G:null,g:null,A:joinChars(identityFunction),a:joinChars(identityFunction),Z:null,B:null,b:null,H:null,h:null,u:null,M:null,m:null,P:null,p:null};function readNTimesFromBufferAndMerge(callback){return function(buffer,count){var chunkData,chunk=[];if(count===1/0)for(;buffer.length>0;)buffer=(chunkData=callback(buffer)).rest,chunk=chunk.concat(chunkData.chunk);else{buffer.length<count&&$Kernel.$raise($$$("ArgumentError"),"too few arguments");for(var i=0;i<count;i++)buffer=(chunkData=callback(buffer)).rest,chunk=chunk.concat(chunkData.chunk)}return{chunk:chunk,rest:buffer}}}function readItem(buffer){return{chunk:buffer.slice(0,1),rest:buffer=buffer.slice(1,buffer.length)}}function readNCharsFromTheFirstItemAndMergeWithFallback(fallback,callback){return function(buffer,count){var chunk=[],source=buffer[0];function infiniteReeder(){var chunkData=callback(source);source=chunkData.rest;var subChunk=chunkData.chunk;1===subChunk.length&&subChunk[0]===nil&&(subChunk=[]),chunk=chunk.concat(subChunk)}function finiteReeder(){var chunkData=callback(source);source=chunkData.rest;var subChunk=chunkData.chunk;0===subChunk.length&&(subChunk=[fallback]),1===subChunk.length&&subChunk[0]===nil&&(subChunk=[fallback]),chunk=chunk.concat(subChunk)}if(source===nil?source="":void 0===source?$Kernel.$raise($$$("ArgumentError"),"too few arguments"):source=$coerce_to(source,$$$("String"),"to_str"),buffer=buffer.slice(1,buffer.length),count===1/0)for(;source.length>0;)infiniteReeder();else for(var i=0;i<count;i++)finiteReeder();return{chunk:chunk,rest:buffer}}}var readChunk={C:readNTimesFromBufferAndMerge(readItem),S:readNTimesFromBufferAndMerge(readItem),L:readNTimesFromBufferAndMerge(readItem),Q:readNTimesFromBufferAndMerge(readItem),J:null,"S>":null,"L>":null,"Q>":null,c:readNTimesFromBufferAndMerge(readItem),s:readNTimesFromBufferAndMerge(readItem),l:readNTimesFromBufferAndMerge(readItem),q:readNTimesFromBufferAndMerge(readItem),j:null,"s>":null,"l>":null,"q>":null,n:null,N:null,v:null,V:null,U:readNTimesFromBufferAndMerge(readItem),w:null,D:null,d:null,F:null,f:null,E:null,e:null,G:null,g:null,A:readNCharsFromTheFirstItemAndMergeWithFallback(" ",readItem),a:readNCharsFromTheFirstItemAndMergeWithFallback("\0",readItem),Z:null,B:null,b:null,H:null,h:null,u:null,M:null,m:null,P:null,p:null},autocompletion={C:!1,S:!1,L:!1,Q:!1,J:null,"S>":null,"L>":null,"Q>":null,c:!1,s:!1,l:!1,q:!1,j:null,"s>":null,"l>":null,"q>":null,n:null,N:null,v:null,V:null,U:!1,w:null,D:null,d:null,F:null,f:null,E:null,e:null,G:null,g:null,A:!1,a:!1,Z:null,B:null,b:null,H:null,h:null,u:!1,M:null,m:null,P:null,p:null};return $def(self,"$pack",(function(format){format=$Opal["$coerce_to!"](format,$$$("String"),"to_str").$gsub(/\s/,"").$delete("\0");var output="",buffer=this.slice();return eachDirectiveAndCount(format,(function(directive,count){var part=function(directive,count){var chunk,chunkReader=readChunk[directive];null==chunkReader&&$Kernel.$raise("Unsupported pack directive "+directive.$inspect()+" (no chunk reader defined)");var chunkData=chunkReader(buffer,count);chunk=chunkData.chunk,buffer=chunkData.rest;var handler=handlers[directive];return null==handler&&$Kernel.$raise("Unsupported pack directive "+directive.$inspect()+" (no handler defined)"),handler(chunk)}(directive,count);if(count!==1/0){var shouldAutocomplete=autocompletion[directive];null==shouldAutocomplete&&$Kernel.$raise("Unsupported pack directive "+directive.$inspect()+" (no autocompletion rule defined)"),shouldAutocomplete&&function(array,size){for(;array.length<size;)array.push(nil)}(part,count)}output=output.concat(part)})),format.match(/^(U\*?)+$/)?output:Opal.enc(output,"binary")}),1)}()},Opal.modules["open-uri"]=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$module=Opal.module,$alias=Opal.alias,$truthy=Opal.truthy,$send=Opal.send,$to_a=Opal.to_a,$def=Opal.def,$hash2=Opal.hash2,$defs=Opal.defs,$eqeq=Opal.eqeq,$rb_minus=Opal.rb_minus,$klass=Opal.klass,$send2=Opal.send2,$find_super=Opal.find_super,$rb_plus=Opal.rb_plus,$eqeqeq=Opal.eqeqeq;return Opal.add_stubs("require,private,=~,respond_to?,open_uri,to_proc,open_uri_original_open,module_function,open_loop,rewind,close_io,close!,closed?,close,request,==,build_response,raise,new,<<,pack,data,io,status=,-,meta_add_field,attr_reader,+,length,===,init,extend,instance_eval,status,base_uri,base_uri=,each,metas,meta_add_field2,attr_accessor,charset,find_encoding,set_encoding,force_encoding,string,find,downcase,[]=,join,meta_setup_encoding,[],utc,at,content_type_parse,scheme,open,read"),self.$require("stringio"),self.$require("corelib/array/pack"),function($base,$parent_nesting){var self=$module($base,"Kernel"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);self.$private(),$alias(self,"open_uri_original_open","open"),function(self,$parent_nesting){$alias(self,"open_uri_original_open","open")}(Opal.get_singleton_class(self)),$def(self,"$open",(function $$open(name,$a){var rest,block=$$open.$$p||nil,self=this;return delete $$open.$$p,rest=Opal.slice.call(arguments,1),$truthy(name["$respond_to?"]("to_str"))&&$truthy(/^[A-Za-z][A-Za-z0-9+\-\.]*:\/\//["$=~"](name))?$send($$("OpenURI"),"open_uri",[name].concat($to_a(rest)),block.$to_proc()):$send(self,"open_uri_original_open",[name].concat($to_a(rest)),block.$to_proc())}),-2),self.$module_function("open")}($nesting[0],$nesting),function($base,$parent_nesting){var self=$module($base,"OpenURI"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return $defs(self,"$open_uri",(function $$open_uri(name,$a){var $yield=$$open_uri.$$p||nil,self=this,io=nil;return delete $$open_uri.$$p,Opal.slice.call(arguments,1),(io=self.$open_loop(name,$hash2([],{}))).$rewind(),$yield!==nil?function(){try{return Opal.yield1($yield,io)}finally{self.$close_io(io)}}():io}),-2),$defs(self,"$close_io",(function(io){return $truthy(io["$respond_to?"]("close!"))?io["$close!"]():$truthy(io["$closed?"]())?nil:io.$close()}),1),$defs(self,"$open_loop",(function(uri,options){var req,data,status,status_text;return data=(req=this.$request(uri)).responseText,status=req.status,status_text=req.statusText&&req.statusText.errno?req.statusText.errno:req.statusText,$eqeq(status,200)||$eqeq(status,0)&&$truthy(data)?this.$build_response(req,status,status_text):this.$raise($$$($$("OpenURI"),"HTTPError").$new(status+" "+status_text,""))}),2),$defs(self,"$build_response",(function(req,status,status_text){var $writer,last_modified,buf=nil,io=nil;return(buf=$$("Buffer").$new())["$<<"](this.$data(req).$pack("c*")),io=buf.$io(),$send(io,"status=",$to_a($writer=[status+" "+status_text])),$rb_minus($writer.length,1),io.$meta_add_field("content-type",req.getResponseHeader("Content-Type")||""),last_modified=req.getResponseHeader("Last-Modified"),$truthy(last_modified)&&io.$meta_add_field("last-modified",last_modified),io}),3),$defs(self,"$data",(function(req){for(var binStr=req.responseText,byteArray=[],i=0,len=binStr.length;i<len;++i){var byteCode=255&binStr.charCodeAt(i);byteArray.push(byteCode)}return byteArray}),1),$defs(self,"$request",(function(uri){try{var xhr=new XMLHttpRequest;return xhr.open("GET",uri,!1),xhr.overrideMimeType("text/plain; charset=x-user-defined"),xhr.send(),xhr}catch(error){this.$raise($$$($$("OpenURI"),"HTTPError").$new(error.message,""))}}),1),function($base,$super){var self=$klass($base,$super,"HTTPError");$def(self,"$initialize",(function $$initialize(message,io){return delete $$initialize.$$p,$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[message,io],null),this.io=io}),2),self.$attr_reader("io")}($nesting[0],$$("StandardError")),function($base,$super,$parent_nesting){var self=$klass($base,null,"Buffer"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;$proto.io=$proto.size=nil,$def(self,"$initialize",(function(){return this.io=$$("StringIO").$new(),this.size=0}),0),self.$attr_reader("size"),$def(self,"$<<",(function(str){return this.io["$<<"](str),this.size=$rb_plus(this.size,str.$length())}),1),$def(self,"$io",(function(){return $eqeqeq($$("Meta"),this.io)||$$("Meta").$init(this.io),this.io}),0)}($nesting[0],0,$nesting),function($base,$parent_nesting){var self=$module($base,"Meta"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);$defs($$("Meta"),"$init",(function(obj,src){var $writer=nil;return null==src&&(src=nil),obj.$extend($$("Meta")),$send(obj,"instance_eval",[],(function $$2(){var self=null==$$2.$$s?this:$$2.$$s;return self.base_uri=nil,self.meta=$hash2([],{}),self.metas=$hash2([],{})}),{$$arity:0,$$s:this}),$truthy(src)?($writer=[src.$status()],$send(obj,"status=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],$writer=[src.$base_uri()],$send(obj,"base_uri=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],$send(src.$metas(),"each",[],(function(name,values){return null==name&&(name=nil),null==values&&(values=nil),obj.$meta_add_field2(name,values)}),2)):nil}),-2),self.$attr_accessor("status"),self.$attr_accessor("base_uri"),self.$attr_reader("meta"),self.$attr_reader("metas"),$def(self,"$meta_setup_encoding",(function(){var charset,enc;return charset=this.$charset(),enc=this.$find_encoding(charset),this.$set_encoding(enc)}),0),$def(self,"$set_encoding",(function(enc){return $truthy(this["$respond_to?"]("force_encoding"))?this.$force_encoding(enc):$truthy(this["$respond_to?"]("string"))?this.$string().$force_encoding(enc):this.$set_encoding(enc)}),1),$def(self,"$find_encoding",(function(charset){var enc=nil;if(enc=nil,$truthy(charset))try{enc=$$("Encoding").$find(charset)}catch($err){if(!Opal.rescue($err,[$$("ArgumentError")]))throw $err;Opal.pop_exception()}return $truthy(enc)||(enc=$$$($$("Encoding"),"ASCII_8BIT")),enc}),1),$def(self,"$meta_add_field2",(function(name,values){var $writer=nil;return null==this.metas&&(this.metas=nil),null==this.meta&&(this.meta=nil),$writer=[name=name.$downcase(),values],$send(this.metas,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],$writer=[name,values.$join(", ")],$send(this.meta,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],$eqeq(name,"content-type")?this.$meta_setup_encoding():nil}),2),$def(self,"$meta_add_field",(function(name,value){return this.$meta_add_field2(name,[value])}),2),$def(self,"$last_modified",(function(){var vs=nil;return null==this.metas&&(this.metas=nil),$truthy(vs=this.metas["$[]"]("last-modified"))?$$("Time").$at(Date.parse(vs.$join(", "))/1e3).$utc():nil}),0),$def(self,"$content_type_parse",(function(){return null==this.metas&&(this.metas=nil),this.metas["$[]"]("content-type").$join(", ")}),0),$def(self,"$charset",(function(){var type;return null==this.base_uri&&(this.base_uri=nil),type=this.$content_type_parse(),$truthy(type)&&$truthy(/^text\//["$=~"](type))&&$truthy(this.base_uri)&&$truthy(/^http$/i["$=~"](this.base_uri.$scheme()))?"iso-8859-1":nil}),0),$def(self,"$content_type",(function(){var type,$ret_or_1;return type=this.$content_type_parse(),$truthy($ret_or_1=type)?$ret_or_1:"application/octet-stream"}),0)}($nesting[0],$nesting),function($base,$parent_nesting){var self=$module($base,"OpenRead"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return $def(self,"$open",(function $$open($a){var rest,block=$$open.$$p||nil,self=this;return delete $$open.$$p,rest=Opal.slice.call(arguments),$send($$("OpenURI"),"open_uri",[self].concat($to_a(rest)),block.$to_proc())}),-1),$def(self,"$read",(function(options){return null==options&&(options=$hash2([],{})),$send(this,"open",[options],(function(f){var str;return null==f&&(f=nil),str=f.$read(),$$("Meta").$init(str,f),str}),1)}),-1)}($nesting[0],$nesting)}($nesting[0],$nesting)};
diff --git a/opal/master/open-uri.min.js.gz b/opal/master/open-uri.min.js.gz
index 72384a8e..3ab70ba0 100644
Binary files a/opal/master/open-uri.min.js.gz and b/opal/master/open-uri.min.js.gz differ
diff --git a/opal/master/optparse.js b/opal/master/optparse.js
new file mode 100644
index 00000000..04529e14
--- /dev/null
+++ b/opal/master/optparse.js
@@ -0,0 +1,3014 @@
+Opal.modules["optparse/version"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $send = Opal.send, $eqeq = Opal.eqeq, $Object = Opal.Object, $eqeqeq = Opal.eqeqeq, $truthy = Opal.truthy, $def = Opal.def, $regexp = Opal.regexp, $neqeq = Opal.neqeq;
+
+  Opal.add_stubs('program_name,options,proc,to_s,==,===,join,<<,find,const_defined?,const_get,puts,[],size,search_const,call,intern,each,inject,split,raise,grep,constants,shift,!=');
+  return (function(self, $parent_nesting) {
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+    
+    
+    $def(self, '$show_version', function $$show_version($a) {
+      var $post_args, pkgs, self = this, progname = nil, result = nil, show = nil;
+
+      
+      
+      $post_args = Opal.slice.call(arguments);
+      
+      pkgs = $post_args;;
+      progname = $$('ARGV').$options().$program_name();
+      result = false;
+      show = $send(self, 'proc', [], function $$1(klass, cname, version){var self = $$1.$$s == null ? this : $$1.$$s, str = nil;
+
+        
+        
+        if (klass == null) klass = nil;;
+        
+        if (cname == null) cname = nil;;
+        
+        if (version == null) version = nil;;
+        str = progname.$to_s();
+        if (!($eqeq(klass, $Object) && ($eqeq(cname, "VERSION")))) {
+          
+          if ($eqeqeq($$('Array'), version)) {
+            version = version.$join(".")
+          };
+          if (!$eqeq(klass, $$('Object'))) {
+            str['$<<'](": " + (klass))
+          };
+          str['$<<'](" version " + (version));
+        };
+        $send(["Release", "RELEASE"], 'find', [], function $$2(rel){
+          
+          
+          if (rel == null) rel = nil;;
+          if ($truthy(klass['$const_defined?'](rel))) {
+            return str['$<<'](" (" + (klass.$const_get(rel)) + ")")
+          } else {
+            return nil
+          };}, 1);
+        self.$puts(str);
+        return (result = true);}, {$$arity: 3, $$s: self});
+      if (($eqeq(pkgs.$size(), 1) && ($eqeq(pkgs['$[]'](0), "all")))) {
+        $send(self, 'search_const', [$Object, /^V(?:ERSION|ersion)$/], function $$3(klass, cname, version){
+          
+          
+          if (klass == null) klass = nil;;
+          
+          if (cname == null) cname = nil;;
+          
+          if (version == null) version = nil;;
+          if (($eqeq(cname['$[]'](1), "e") && ($truthy(klass['$const_defined?']("Version"))))) {
+            return nil
+          } else {
+            return show.$call(klass, cname.$intern(), version)
+          };}, 3)
+      } else {
+        $send(pkgs, 'each', [], function $$4(pkg){var v = nil, n = nil;
+
+          
+          
+          if (pkg == null) pkg = nil;;
+          try {
+            
+            pkg = $send(pkg.$split(/::|\//), 'inject', [$Object], function $$5(m, c){
+              
+              
+              if (m == null) m = nil;;
+              
+              if (c == null) c = nil;;
+              return m.$const_get(c);}, 2);
+            v = ($truthy(pkg['$const_defined?']("Version")) ? (pkg.$const_get((n = "Version"))) : ($truthy(pkg['$const_defined?']("VERSION")) ? (pkg.$const_get((n = "VERSION"))) : (((n = nil), "unknown"))));
+            return show.$call(pkg, n, v);
+          } catch ($err) {
+            if (Opal.rescue($err, [$$('NameError')])) {
+              try {
+                return nil
+              } finally { Opal.pop_exception(); }
+            } else { throw $err; }
+          };}, 1)
+      };
+      return result;
+    }, -1);
+    
+    $def(self, '$each_const', function $$each_const(path, base) {
+      var self = this;
+
+      
+      
+      if (base == null) base = $Object;;
+      return $send(path.$split(/::|\//), 'inject', [base], function $$6(klass, name){var self = $$6.$$s == null ? this : $$6.$$s;
+
+        
+        
+        if (klass == null) klass = nil;;
+        
+        if (name == null) name = nil;;
+        if (!$eqeqeq($$('Module'), klass)) {
+          self.$raise($$('NameError'), path)
+        };
+        return $send(klass.$constants(), 'grep', [$regexp([name], 'i')], function $$7(c){var $ret_or_1 = nil;
+
+          
+          
+          if (c == null) c = nil;;
+          if ($truthy(($ret_or_1 = klass['$const_defined?'](c)))) {
+            $ret_or_1
+          } else {
+            return nil;
+          };
+          return klass.$const_get(c);}, 1);}, {$$arity: 2, $$s: self});
+    }, -2);
+    return $def(self, '$search_const', function $$search_const(klass, name) {
+      var $a, $yield = $$search_const.$$p || nil, klasses = nil;
+
+      delete $$search_const.$$p;
+      
+      klasses = [klass];
+      while ($truthy((klass = klasses.$shift()))) {
+        $send(klass.$constants(), 'each', [], function $$8(cname){var $ret_or_1 = nil, const$ = nil;
+
+          
+          
+          if (cname == null) cname = nil;;
+          if ($truthy(($ret_or_1 = klass['$const_defined?'](cname)))) {
+            $ret_or_1
+          } else {
+            return nil;
+          };
+          const$ = klass.$const_get(cname);
+          if ($eqeqeq(name, cname)) {
+            Opal.yieldX($yield, [klass, cname, const$])
+          };
+          if (($eqeqeq($$('Module'), const$) && ($neqeq(const$, $Object)))) {
+            return klasses['$<<'](const$)
+          } else {
+            return nil
+          };}, 1)
+      };
+    }, 2);
+  })(Opal.get_singleton_class($$('OptionParser')), $nesting)
+};
+
+Opal.modules["shellwords"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $rb_plus = Opal.rb_plus, $send = Opal.send, $to_ary = Opal.to_ary, $truthy = Opal.truthy, $def = Opal.def, $alias = Opal.alias, $klass = Opal.klass;
+
+  Opal.add_stubs('+,new,scan,raise,inspect,gsub,<<,module_function,to_s,empty?,dup,join,map,shellescape,split,escape');
+  
+  (function($base, $parent_nesting) {
+    var self = $module($base, 'Shellwords');
+
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+    
+    
+    $def(self, '$shellsplit', function $$shellsplit(line) {
+      var self = this, words = nil, field = nil;
+
+      
+      line = $rb_plus(line, " ");
+      words = [];
+      field = $$('String').$new();
+      $send(line, 'scan', [/\s*(?:([^\s\\\'\"]+)|'([^\']*)'|"((?:[^\"\\]|\\.)*)"|(\\.?)|(\S))(\r?\n?\Z|\s)?/m], function $$1($mlhs_tmp1){var $a, $b, self = $$1.$$s == null ? this : $$1.$$s, word = nil, sq = nil, dq = nil, esc = nil, garbage = nil, sep = nil, $ret_or_1 = nil, $ret_or_2 = nil, $ret_or_3 = nil;
+
+        
+        
+        if ($mlhs_tmp1 == null) $mlhs_tmp1 = nil;;
+        $b = $mlhs_tmp1, $a = $to_ary($b), (word = ($a[0] == null ? nil : $a[0])), (sq = ($a[1] == null ? nil : $a[1])), (dq = ($a[2] == null ? nil : $a[2])), (esc = ($a[3] == null ? nil : $a[3])), (garbage = ($a[4] == null ? nil : $a[4])), (sep = ($a[5] == null ? nil : $a[5])), $b;
+        if ($truthy(garbage)) {
+          self.$raise($$('ArgumentError'), "Unmatched quote: " + (line.$inspect()))
+        };
+        field = $rb_plus(field, ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = ($truthy(($ret_or_3 = word)) ? ($ret_or_3) : (sq)))) ? ($ret_or_2) : (($truthy(($ret_or_3 = dq)) ? (dq.$gsub(/\\([$`"\\\n])/, "\\1")) : ($ret_or_3)))))) ? ($ret_or_1) : (esc.$gsub(/\\(.)/, "\\1"))));
+        if ($truthy(sep)) {
+          
+          words['$<<'](field);
+          return (field = $$('String').$new());
+        } else {
+          return nil
+        };}, {$$arity: 1, $$s: self, $$has_top_level_mlhs_arg: true});
+      return words;
+    }, 1);
+    $alias(self, "shellwords", "shellsplit");
+    self.$module_function("shellsplit", "shellwords");
+    (function(self, $parent_nesting) {
+      
+      return $alias(self, "split", "shellsplit")
+    })(Opal.get_singleton_class(self), $nesting);
+    
+    $def(self, '$shellescape', function $$shellescape(str) {
+      
+      
+      str = str.$to_s();
+      if ($truthy(str['$empty?']())) {
+        return "''".$dup()
+      };
+      str = str.$dup();
+      str = str.$gsub(/[^A-Za-z0-9_\-.,:+\/@\n]/, "\\\\\\&");
+      str = str.$gsub(/\n/, "'\n'");
+      return str;
+    }, 1);
+    self.$module_function("shellescape");
+    (function(self, $parent_nesting) {
+      
+      return $alias(self, "escape", "shellescape")
+    })(Opal.get_singleton_class(self), $nesting);
+    
+    $def(self, '$shelljoin', function $$shelljoin(array) {
+      var self = this;
+
+      return $send(array, 'map', [], function $$2(arg){var self = $$2.$$s == null ? this : $$2.$$s;
+
+        
+        
+        if (arg == null) arg = nil;;
+        return self.$shellescape(arg);}, {$$arity: 1, $$s: self}).$join(" ")
+    }, 1);
+    self.$module_function("shelljoin");
+    return (function(self, $parent_nesting) {
+      
+      return $alias(self, "join", "shelljoin")
+    })(Opal.get_singleton_class(self), $nesting);
+  })($nesting[0], $nesting);
+  (function($base, $super, $parent_nesting) {
+    var self = $klass($base, $super, 'String');
+
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+    
+    
+    $def(self, '$shellsplit', function $$shellsplit() {
+      var self = this;
+
+      return $$('Shellwords').$split(self)
+    }, 0);
+    return $def(self, '$shellescape', function $$shellescape() {
+      var self = this;
+
+      return $$('Shellwords').$escape(self)
+    }, 0);
+  })($nesting[0], null, $nesting);
+  return (function($base, $super, $parent_nesting) {
+    var self = $klass($base, $super, 'Array');
+
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+    return $def(self, '$shelljoin', function $$shelljoin() {
+      var self = this;
+
+      return $$('Shellwords').$join(self)
+    }, 0)
+  })($nesting[0], null, $nesting);
+};
+
+Opal.modules["optparse"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $const_set = Opal.const_set, $module = Opal.module, $rb_plus = Opal.rb_plus, $defs = Opal.defs, $truthy = Opal.truthy, $send = Opal.send, $eqeqeq = Opal.eqeqeq, $def = Opal.def, $eqeq = Opal.eqeq, $to_ary = Opal.to_ary, $rb_gt = Opal.rb_gt, $to_a = Opal.to_a, $rb_ge = Opal.rb_ge, $hash2 = Opal.hash2, $rb_minus = Opal.rb_minus, $rb_lt = Opal.rb_lt, $rb_times = Opal.rb_times, $not = Opal.not, $slice = Opal.slice, $gvars = Opal.gvars, $alias = Opal.alias, $send2 = Opal.send2, $find_super = Opal.find_super, $rb_le = Opal.rb_le, $neqeq = Opal.neqeq, $lambda = Opal.lambda, $regexp = Opal.regexp;
+
+  Opal.add_stubs('freeze,new,+,gsub,quote,regexp,call,===,id2name,empty?,<<,candidate,to_proc,method,public,sort_by,size,==,[],>,shift,each,rindex,throw,include,attr_reader,>=,incompatible_argument_styles,raise,filter_backtrace,caller,pattern,match,to_a,length,private,conv,proc,block,-,fetch,[]=,join,dup,desc,arg,<,+@,*,sub,to_i,max,collect,!,ljust,to_s,=~,first,long,short,last_match,conv_arg,parse_arg,respond_to?,delete,update,invert,delete_if,unshift,push,__send__,complete,keys,list,reverse_each,summarize,concat,reverse,each_line,add_banner,compsys,catch,basename,visit,puts,help,exit,require,show_version,split,abort,program_name,ver,instance_eval,nonzero?,inc,class,add_officious,base,terminate,accept,top,reject,attr_writer,attr_accessor,version,release,pop,index,banner,<=,search,notwice,!=,any?,guess,tr,downcase,append,make_switch,define,prepend,define_head,define_tail,order!,default_argv,to_sym,parse_in_order,include?,require_exact,set_option,parse,switch_name,delete_prefix,match_nonswitch?,permute!,parse!,scan,compact,getopts,curry,select!,is_a?,message_for,formatter,&,correct,map,map!,load,expand_path,readlines,upcase,shellwords,nil?,Integer,to_f,Rational,Float,|,args,reason,additional,const_set,undef_method,default_argv=,warn,options,extend');
+  
+  (function($base, $super, $parent_nesting) {
+    var self = $klass($base, $super, 'OptionParser');
+
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $writer = nil, decimal = nil, binary = nil, hex = nil, octal = nil, integer = nil, float$ = nil, floatpat = nil, real = nil, yesno = nil, $proto = self.$$prototype;
+
+    $proto.banner = $proto.program_name = $proto.version = $proto.release = $proto.stack = $proto.summary_width = $proto.summary_indent = nil;
+    
+    $const_set($$('OptionParser'), 'Version', "0.1.1");
+    $const_set($nesting[0], 'NoArgument', [$const_set($nesting[0], 'NO_ARGUMENT', "NONE"), nil].$freeze());
+    $const_set($nesting[0], 'RequiredArgument', [$const_set($nesting[0], 'REQUIRED_ARGUMENT', "REQUIRED"), true].$freeze());
+    $const_set($nesting[0], 'OptionalArgument', [$const_set($nesting[0], 'OPTIONAL_ARGUMENT', "OPTIONAL"), false].$freeze());
+    (function($base, $parent_nesting) {
+      var self = $module($base, 'Completion');
+
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+      
+      $defs(self, '$regexp', function $$regexp(key, icase) {
+        
+        return $$('Regexp').$new($rb_plus("\\A", $$('Regexp').$quote(key).$gsub(/\w+\b/, "\\&\\w*")), icase)
+      }, 2);
+      $defs(self, '$candidate', function $$candidate(key, icase, pat) {
+        var block = $$candidate.$$p || nil, $ret_or_1 = nil, candidates = nil;
+
+        delete $$candidate.$$p;
+        
+        ;
+        
+        if (icase == null) icase = false;;
+        
+        if (pat == null) pat = nil;;
+        pat = ($truthy(($ret_or_1 = pat)) ? ($ret_or_1) : ($$('Completion').$regexp(key, icase)));
+        candidates = [];
+        $send(block, 'call', [], function $$1(k, $a){var $post_args, v, $b, $c, $d, $e, kn = nil;
+
+          
+          
+          if (k == null) k = nil;;
+          
+          $post_args = Opal.slice.call(arguments, 1);
+          
+          v = $post_args;;
+          if ($truthy(($ret_or_1 = ($eqeqeq($$('Regexp'), k) ? (((kn = ""), k['$==='](key))) : (((kn = ($truthy(((($b = k) && ($c = $b, $c) && ($d = $c) && ((($e = $d.$id2name) && !$e.$$stub) || $d['$respond_to_missing?']('id2name'))) ? 'method' : nil)) ? (k.$id2name()) : (k))), pat['$==='](kn))))))) {
+            $ret_or_1
+          } else {
+            return nil;
+          };
+          if ($truthy(v['$empty?']())) {
+            v['$<<'](k)
+          };
+          return candidates['$<<']([k, v, kn]);}, -2);
+        return candidates;
+      }, -2);
+      
+      $def(self, '$candidate', function $$candidate(key, icase, pat) {
+        var self = this;
+
+        
+        
+        if (icase == null) icase = false;;
+        
+        if (pat == null) pat = nil;;
+        return $send($$('Completion'), 'candidate', [key, icase, pat], self.$method("each").$to_proc());
+      }, -2);
+      self.$public();
+      
+      $def(self, '$complete', function $$complete(key, icase, pat) {
+        var $a, $b, $yield = $$complete.$$p || nil, self = this, candidates = nil, canon = nil, sw = nil, cn = nil, $ret_or_1 = nil;
+
+        delete $$complete.$$p;
+        
+        
+        if (icase == null) icase = false;;
+        
+        if (pat == null) pat = nil;;
+        candidates = $send($send(self, 'candidate', [key, icase, pat], self.$method("each").$to_proc()), 'sort_by', [], function $$2(k, v, kn){
+          
+          
+          if (k == null) k = nil;;
+          
+          if (v == null) v = nil;;
+          
+          if (kn == null) kn = nil;;
+          return kn.$size();}, 3);
+        if ($eqeq(candidates.$size(), 1)) {
+          $b = candidates['$[]'](0), $a = $to_ary($b), (canon = ($a[0] == null ? nil : $a[0])), (sw = ($a[1] == null ? nil : $a[1])), $b
+        } else if ($truthy($rb_gt(candidates.$size(), 1))) {
+          
+          $b = candidates.$shift(), $a = $to_ary($b), (canon = ($a[0] == null ? nil : $a[0])), (sw = ($a[1] == null ? nil : $a[1])), (cn = ($a[2] == null ? nil : $a[2])), $b;
+          $send(candidates, 'each', [], function $$3(k, v, kn){var $c, self = $$3.$$s == null ? this : $$3.$$s;
+
+            
+            
+            if (k == null) k = nil;;
+            
+            if (v == null) v = nil;;
+            
+            if (kn == null) kn = nil;;
+            if ($eqeq(sw, v)) {
+              return nil;
+            };
+            if (($eqeqeq($$('String'), cn) && ($eqeqeq($$('String'), kn)))) {
+              if ($truthy(cn.$rindex(kn, 0))) {
+                
+                $c = [k, v, kn], (canon = $c[0]), (sw = $c[1]), (cn = $c[2]), $c;
+                return nil;;
+              } else if ($truthy(kn.$rindex(cn, 0))) {
+                return nil;
+              }
+            };
+            return self.$throw("ambiguous", key);}, {$$arity: 3, $$s: self});
+        };
+        if ($truthy(canon)) {
+          
+          if ($truthy(($ret_or_1 = ($yield !== nil)))) {
+            $ret_or_1
+          } else {
+            
+            return [key].concat($to_a(sw));
+          };
+          return Opal.yieldX($yield, [key].concat($to_a(sw)));;
+        } else {
+          return nil
+        };
+      }, -2);
+      return $def(self, '$convert', function $$convert($a, $b, $c) {
+        var $post_args, opt, val, $rest_arg;
+
+        
+        
+        $post_args = Opal.slice.call(arguments);
+        
+        if ($post_args.length > 0) opt = $post_args.shift();
+        if (opt == null) opt = nil;;
+        
+        if ($post_args.length > 0) val = $post_args.shift();
+        if (val == null) val = nil;;
+        
+        $rest_arg = $post_args;;
+        return val;
+      }, -1);
+    })($nesting[0], $nesting);
+    (function($base, $super, $parent_nesting) {
+      var self = $klass($base, $super, 'OptionMap');
+
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+      return self.$include($$('Completion'))
+    })($nesting[0], $$('Hash'), $nesting);
+    (function($base, $super, $parent_nesting) {
+      var self = $klass($base, $super, 'Switch');
+
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
+
+      $proto["short"] = $proto["long"] = $proto.pattern = nil;
+      
+      self.$attr_reader("pattern", "conv", "short", "long", "arg", "desc", "block");
+      $defs(self, '$guess', function $$guess(arg) {
+        var self = this, $ret_or_1 = nil, t = nil;
+
+        
+        if ($eqeqeq("", ($ret_or_1 = arg))) {
+          t = self
+        } else if ($eqeqeq(/^=?\[/, $ret_or_1)) {
+          t = $$$($$('Switch'), 'OptionalArgument')
+        } else if ($eqeqeq(/^\s+\[/, $ret_or_1)) {
+          t = $$$($$('Switch'), 'PlacedArgument')
+        } else {
+          t = $$$($$('Switch'), 'RequiredArgument')
+        };
+        if ($truthy(($ret_or_1 = $rb_ge(self, t)))) {
+          $ret_or_1
+        } else {
+          self.$incompatible_argument_styles(arg, t)
+        };
+        return t;
+      }, 1);
+      $defs(self, '$incompatible_argument_styles', function $$incompatible_argument_styles(arg, t) {
+        var self = this;
+
+        return self.$raise($$('ArgumentError'), "" + (arg) + ": incompatible argument styles\n  " + (self) + ", " + (t), $$('ParseError').$filter_backtrace(self.$caller(2)))
+      }, 2);
+      $defs(self, '$pattern', function $$pattern() {
+        
+        return $$('NilClass')
+      }, 0);
+      
+      $def(self, '$initialize', function $$initialize(pattern, conv, short$, long$, arg, desc, block) {
+        var _block = $$initialize.$$p || nil, $a, self = this, $ret_or_1 = nil;
+
+        delete $$initialize.$$p;
+        
+        ;
+        
+        if (pattern == null) pattern = nil;;
+        
+        if (conv == null) conv = nil;;
+        
+        if (short$ == null) short$ = nil;;
+        
+        if (long$ == null) long$ = nil;;
+        
+        if (arg == null) arg = nil;;
+        
+        if (desc == null) desc = (($truthy(short$) || ($truthy(long$))) ? ([]) : nil);;
+        
+        if (block == null) block = nil;;
+        if ($eqeqeq($$('Array'), pattern)) {
+          self.$raise()
+        };
+        block = ($truthy(($ret_or_1 = block)) ? ($ret_or_1) : (_block));
+        return $a = [pattern, conv, short$, long$, arg, desc, block], (self.pattern = $a[0]), (self.conv = $a[1]), (self["short"] = $a[2]), (self["long"] = $a[3]), (self.arg = $a[4]), (self.desc = $a[5]), (self.block = $a[6]), $a;
+      }, -1);
+      
+      $def(self, '$parse_arg', function $$parse_arg(arg) {
+        var $yield = $$parse_arg.$$p || nil, self = this, $ret_or_1 = nil, m = nil, s = nil;
+
+        delete $$parse_arg.$$p;
+        
+        if ($truthy(($ret_or_1 = self.$pattern()))) {
+          $ret_or_1
+        } else {
+          
+          return [nil, [arg]];
+        };
+        if (!$truthy((m = self.$pattern().$match(arg)))) {
+          
+          Opal.yieldX($yield, [$$('InvalidArgument'), arg]);
+          return [arg, []];
+        };
+        if ($eqeqeq($$('String'), m)) {
+          m = [(s = m)]
+        } else {
+          
+          m = m.$to_a();
+          s = m['$[]'](0);
+          if (!$eqeqeq($$('String'), s)) {
+            return [nil, m]
+          };
+        };
+        if (!$truthy(arg.$rindex(s, 0))) {
+          self.$raise($$('InvalidArgument'), arg)
+        };
+        if ($eqeq(s.$length(), arg.$length())) {
+          return [nil, m]
+        };
+        Opal.yieldX($yield, [$$('InvalidArgument'), arg]);
+        return [arg['$[]'](Opal.Range.$new(s.$length(), -1, false)), m];
+      }, 1);
+      self.$private("parse_arg");
+      
+      $def(self, '$conv_arg', function $$conv_arg(arg, val) {
+        var self = this;
+
+        
+        
+        if (val == null) val = [];;
+        if ($truthy(self.$conv())) {
+          val = $send(self.$conv(), 'call', $to_a(val))
+        } else {
+          val = $send($send(self, 'proc', [], function $$4(v){
+            
+            
+            if (v == null) v = nil;;
+            return v;}, 1), 'call', $to_a(val))
+        };
+        return [arg, self.$block(), val];
+      }, -2);
+      self.$private("conv_arg");
+      
+      $def(self, '$summarize', function $$summarize(sdone, ldone, width, max, indent) {
+        var $a, $yield = $$summarize.$$p || nil, self = this, sopts = nil, lopts = nil, left = nil, right = nil, s = nil, l = nil, $ret_or_1 = nil, $ret_or_2 = nil, $writer = nil, mlen = nil, r = nil;
+
+        delete $$summarize.$$p;
+        
+        
+        if (sdone == null) sdone = $hash2([], {});;
+        
+        if (ldone == null) ldone = $hash2([], {});;
+        
+        if (width == null) width = 1;;
+        
+        if (max == null) max = $rb_minus(width, 1);;
+        
+        if (indent == null) indent = "";;
+        $a = [[], [], nil], (sopts = $a[0]), (lopts = $a[1]), $a;
+        if ($truthy(self["short"])) {
+          $send(self["short"], 'each', [], function $$5(s){var $writer = nil;
+
+            
+            
+            if (s == null) s = nil;;
+            $send(sdone, 'fetch', [s], function $$6(){
+              return sopts['$<<'](s)}, 0);
+            
+            $writer = [s, true];
+            $send(sdone, '[]=', $to_a($writer));
+            return $writer[$rb_minus($writer["length"], 1)];;}, 1)
+        };
+        if ($truthy(self["long"])) {
+          $send(self["long"], 'each', [], function $$7(s){var $writer = nil;
+
+            
+            
+            if (s == null) s = nil;;
+            $send(ldone, 'fetch', [s], function $$8(){
+              return lopts['$<<'](s)}, 0);
+            
+            $writer = [s, true];
+            $send(ldone, '[]=', $to_a($writer));
+            return $writer[$rb_minus($writer["length"], 1)];;}, 1)
+        };
+        if (($truthy(sopts['$empty?']()) && ($truthy(lopts['$empty?']())))) {
+          return nil
+        };
+        left = [sopts.$join(", ")];
+        right = self.$desc().$dup();
+        while ($truthy((s = lopts.$shift()))) {
+          
+          l = $rb_plus(left['$[]'](-1).$length(), s.$length());
+          if (($eqeq(left.$size(), 1) && ($truthy(self.$arg())))) {
+            l = $rb_plus(l, self.$arg().$length())
+          };
+          if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = $rb_lt(l, max))) ? ($ret_or_2) : (sopts['$empty?']()))))) {
+            $ret_or_1
+          } else {
+            left['$<<'](""['$+@']())
+          };
+          
+          $writer = [-1, $rb_plus(left['$[]'](-1), $rb_plus(($truthy(left['$[]'](-1)['$empty?']()) ? ($rb_times(" ", 4)) : (", ")), s))];
+          $send(left, '[]=', $to_a($writer));
+          $writer[$rb_minus($writer["length"], 1)];;
+        };
+        if ($truthy(self.$arg())) {
+          
+          $writer = [0, $rb_plus(left['$[]'](0), ($truthy(left['$[]'](1)) ? ($rb_plus(self.$arg().$sub(/^(\[?)=/, "\\1"), ",")) : (self.$arg())))];
+          $send(left, '[]=', $to_a($writer));
+          $writer[$rb_minus($writer["length"], 1)];
+        };
+        mlen = $send(left, 'collect', [], "length".$to_proc()).$max().$to_i();
+        while ($truthy(($truthy(($ret_or_1 = $rb_gt(mlen, width))) ? ((l = left.$shift())) : ($ret_or_1)))) {
+          
+          if ($eqeq(l.$length(), mlen)) {
+            mlen = $send(left, 'collect', [], "length".$to_proc()).$max().$to_i()
+          };
+          if ((($truthy($rb_lt(l.$length(), width)) && ($truthy((r = right['$[]'](0))))) && ($not(r['$empty?']())))) {
+            
+            l = $rb_plus($rb_plus(l.$to_s().$ljust(width), " "), r);
+            right.$shift();
+          };
+          Opal.yield1($yield, $rb_plus(indent, l));
+        };
+        while ($truthy(((l = left.$shift()), (r = right.$shift()), ($truthy(($ret_or_1 = l)) ? ($ret_or_1) : (r))))) {
+          
+          if (($truthy(r) && ($not(r['$empty?']())))) {
+            l = $rb_plus($rb_plus(l.$to_s().$ljust(width), " "), r)
+          };
+          Opal.yield1($yield, $rb_plus(indent, l));
+        };
+        return self;
+      }, -1);
+      
+      $def(self, '$add_banner', function $$add_banner(to) {
+        var self = this, s = nil;
+
+        
+        if (!($truthy(self["short"]) || ($truthy(self["long"])))) {
+          
+          s = self.$desc().$join();
+          if (!$truthy(s['$empty?']())) {
+            to['$<<']($rb_plus($rb_plus(" [", s), "]..."))
+          };
+        };
+        return to;
+      }, 1);
+      
+      $def(self, '$match_nonswitch?', function $Switch_match_nonswitch$ques$9(str) {
+        var self = this;
+
+        if (($truthy(self["short"]) || ($truthy(self["long"])))) {
+          return nil
+        } else {
+          return self.pattern['$=~'](str)
+        }
+      }, 1);
+      
+      $def(self, '$switch_name', function $$switch_name() {
+        var self = this, $ret_or_1 = nil;
+
+        return ($truthy(($ret_or_1 = self.$long().$first())) ? ($ret_or_1) : (self.$short().$first())).$sub(/^-+(?:\[no-\])?/, "")
+      }, 0);
+      
+      $def(self, '$compsys', function $$compsys(sdone, ldone) {
+        var $a, $yield = $$compsys.$$p || nil, self = this, sopts = nil, lopts = nil;
+
+        delete $$compsys.$$p;
+        
+        $a = [[], []], (sopts = $a[0]), (lopts = $a[1]), $a;
+        if ($truthy(self["short"])) {
+          $send(self["short"], 'each', [], function $$10(s){var $writer = nil;
+
+            
+            
+            if (s == null) s = nil;;
+            $send(sdone, 'fetch', [s], function $$11(){
+              return sopts['$<<'](s)}, 0);
+            
+            $writer = [s, true];
+            $send(sdone, '[]=', $to_a($writer));
+            return $writer[$rb_minus($writer["length"], 1)];;}, 1)
+        };
+        if ($truthy(self["long"])) {
+          $send(self["long"], 'each', [], function $$12(s){var $writer = nil;
+
+            
+            
+            if (s == null) s = nil;;
+            $send(ldone, 'fetch', [s], function $$13(){
+              return lopts['$<<'](s)}, 0);
+            
+            $writer = [s, true];
+            $send(ldone, '[]=', $to_a($writer));
+            return $writer[$rb_minus($writer["length"], 1)];;}, 1)
+        };
+        if (($truthy(sopts['$empty?']()) && ($truthy(lopts['$empty?']())))) {
+          return nil
+        };
+        return $send($rb_plus(sopts, lopts), 'each', [], function $$14(opt){var self = $$14.$$s == null ? this : $$14.$$s, o = nil;
+
+          
+          
+          if (opt == null) opt = nil;;
+          if ($truthy(/^--\[no-\](.+)$/['$=~'](opt))) {
+            
+            o = $$('Regexp').$last_match(1);
+            Opal.yieldX($yield, ["--" + (o), self.$desc().$join("")]);
+            return Opal.yieldX($yield, ["--no-" + (o), self.$desc().$join("")]);;
+          } else {
+            return Opal.yieldX($yield, [opt.$to_s(), self.$desc().$join("")]);
+          };}, {$$arity: 1, $$s: self});
+      }, 2);
+      (function($base, $super, $parent_nesting) {
+        var self = $klass($base, $super, 'NoArgument');
+
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+        
+        
+        $def(self, '$parse', function $$parse(arg, argv) {
+          var $yield = $$parse.$$p || nil, self = this;
+
+          delete $$parse.$$p;
+          
+          if ($truthy(arg)) {
+            Opal.yieldX($yield, [$$('NeedlessArgument'), arg])
+          };
+          return self.$conv_arg(arg);
+        }, 2);
+        $defs(self, '$incompatible_argument_styles', function $$incompatible_argument_styles($a) {
+          var $post_args, $rest_arg;
+
+          
+          
+          $post_args = Opal.slice.call(arguments);
+          
+          $rest_arg = $post_args;;
+          return nil;
+        }, -1);
+        return $defs(self, '$pattern', function $$pattern() {
+          
+          return $$('Object')
+        }, 0);
+      })($nesting[0], self, $nesting);
+      (function($base, $super, $parent_nesting) {
+        var self = $klass($base, $super, 'RequiredArgument');
+
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+        return $def(self, '$parse', function $$parse(arg, argv) {
+          var self = this;
+
+          
+          if (!$truthy(arg)) {
+            
+            if ($truthy(argv['$empty?']())) {
+              self.$raise($$('MissingArgument'))
+            };
+            arg = argv.$shift();
+          };
+          return $send(self, 'conv_arg', $to_a($send(self, 'parse_arg', [arg], self.$method("raise").$to_proc())));
+        }, 2)
+      })($nesting[0], self, $nesting);
+      (function($base, $super) {
+        var self = $klass($base, $super, 'OptionalArgument');
+
+        
+        return $def(self, '$parse', function $$parse(arg, argv) {
+          var error = $$parse.$$p || nil, self = this;
+
+          delete $$parse.$$p;
+          
+          ;
+          if ($truthy(arg)) {
+            return $send(self, 'conv_arg', $to_a($send(self, 'parse_arg', [arg], error.$to_proc())))
+          } else {
+            return self.$conv_arg(arg)
+          };
+        }, 2)
+      })($nesting[0], self);
+      return (function($base, $super) {
+        var self = $klass($base, $super, 'PlacedArgument');
+
+        
+        return $def(self, '$parse', function $$parse(arg, argv) {
+          var error = $$parse.$$p || nil, self = this, val = nil, opt = nil, $writer = nil;
+
+          delete $$parse.$$p;
+          
+          ;
+          if (($not((val = arg)) && (($truthy(argv['$empty?']()) || ($truthy(/^-/['$=~']((val = argv['$[]'](0))))))))) {
+            return [nil, self.$block(), nil]
+          };
+          opt = (val = $send(self, 'parse_arg', [val], error.$to_proc()))['$[]'](1);
+          val = $send(self, 'conv_arg', $to_a(val));
+          if (($truthy(opt) && ($not(arg)))) {
+            argv.$shift()
+          } else {
+            
+            $writer = [0, nil];
+            $send(val, '[]=', $to_a($writer));
+            $writer[$rb_minus($writer["length"], 1)];
+          };
+          return val;
+        }, 2)
+      })($nesting[0], self);
+    })($nesting[0], null, $nesting);
+    (function($base, $super, $parent_nesting) {
+      var self = $klass($base, $super, 'List');
+
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
+
+      $proto.atype = $proto["short"] = $proto["long"] = $proto.list = nil;
+      
+      self.$attr_reader("atype");
+      self.$attr_reader("short");
+      self.$attr_reader("long");
+      self.$attr_reader("list");
+      
+      $def(self, '$initialize', function $$initialize() {
+        var self = this;
+
+        
+        self.atype = $hash2([], {});
+        self["short"] = $$('OptionMap').$new();
+        self["long"] = $$('OptionMap').$new();
+        return (self.list = []);
+      }, 0);
+      
+      $def(self, '$accept', function $$accept(t, pat) {
+        var block = $$accept.$$p || nil, self = this, $ret_or_1 = nil, $writer = nil;
+
+        delete $$accept.$$p;
+        
+        ;
+        
+        if (pat == null) pat = /.*/m;;
+        if ($truthy(pat)) {
+          if ($truthy(($ret_or_1 = pat['$respond_to?']("match")))) {
+            $ret_or_1
+          } else {
+            self.$raise($$('TypeError'), "has no `match'", $$('ParseError').$filter_backtrace(self.$caller(2)))
+          }
+        } else if ($truthy(t['$respond_to?']("match"))) {
+          pat = t
+        };
+        if (!$truthy(block)) {
+          if ($truthy(pat['$respond_to?']("convert"))) {
+            block = pat.$method("convert").$to_proc()
+          }
+        };
+        
+        $writer = [t, [pat, block]];
+        $send(self.atype, '[]=', $to_a($writer));
+        return $writer[$rb_minus($writer["length"], 1)];;
+      }, -2);
+      
+      $def(self, '$reject', function $$reject(t) {
+        var self = this;
+
+        return self.atype.$delete(t)
+      }, 1);
+      
+      $def(self, '$update', function $$update(sw, sopts, lopts, nsw, nlopts) {
+        var self = this, used = nil;
+
+        
+        
+        if (nsw == null) nsw = nil;;
+        
+        if (nlopts == null) nlopts = nil;;
+        if ($truthy(sopts)) {
+          $send(sopts, 'each', [], function $$15(o){var self = $$15.$$s == null ? this : $$15.$$s, $writer = nil;
+            if (self["short"] == null) self["short"] = nil;
+
+            
+            
+            if (o == null) o = nil;;
+            $writer = [o, sw];
+            $send(self["short"], '[]=', $to_a($writer));
+            return $writer[$rb_minus($writer["length"], 1)];}, {$$arity: 1, $$s: self})
+        };
+        if ($truthy(lopts)) {
+          $send(lopts, 'each', [], function $$16(o){var self = $$16.$$s == null ? this : $$16.$$s, $writer = nil;
+            if (self["long"] == null) self["long"] = nil;
+
+            
+            
+            if (o == null) o = nil;;
+            $writer = [o, sw];
+            $send(self["long"], '[]=', $to_a($writer));
+            return $writer[$rb_minus($writer["length"], 1)];}, {$$arity: 1, $$s: self})
+        };
+        if (($truthy(nsw) && ($truthy(nlopts)))) {
+          $send(nlopts, 'each', [], function $$17(o){var self = $$17.$$s == null ? this : $$17.$$s, $writer = nil;
+            if (self["long"] == null) self["long"] = nil;
+
+            
+            
+            if (o == null) o = nil;;
+            $writer = [o, nsw];
+            $send(self["long"], '[]=', $to_a($writer));
+            return $writer[$rb_minus($writer["length"], 1)];}, {$$arity: 1, $$s: self})
+        };
+        used = self["short"].$invert().$update(self["long"].$invert());
+        return $send(self.list, 'delete_if', [], function $$18(o){var $ret_or_1 = nil;
+
+          
+          
+          if (o == null) o = nil;;
+          if ($truthy(($ret_or_1 = $$('Switch')['$==='](o)))) {
+            return used['$[]'](o)['$!']()
+          } else {
+            return $ret_or_1
+          };}, 1);
+      }, -4);
+      self.$private("update");
+      
+      $def(self, '$prepend', function $$prepend($a) {
+        var $post_args, args, self = this;
+
+        
+        
+        $post_args = Opal.slice.call(arguments);
+        
+        args = $post_args;;
+        $send(self, 'update', $to_a(args));
+        return self.list.$unshift(args['$[]'](0));
+      }, -1);
+      
+      $def(self, '$append', function $$append($a) {
+        var $post_args, args, self = this;
+
+        
+        
+        $post_args = Opal.slice.call(arguments);
+        
+        args = $post_args;;
+        $send(self, 'update', $to_a(args));
+        return self.list.$push(args['$[]'](0));
+      }, -1);
+      
+      $def(self, '$search', function $$search(id, key) {try {
+
+        var $yield = $$search.$$p || nil, self = this, list = nil, val = nil;
+
+        delete $$search.$$p;
+        if ($truthy((list = self.$__send__(id)))) {
+          
+          val = $send(list, 'fetch', [key], function $$19(){
+            Opal.ret(nil)}, 0);
+          if (($yield !== nil)) {
+            return Opal.yield1($yield, val);
+          } else {
+            return val
+          };
+        } else {
+          return nil
+        }
+        } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
+      }, 2);
+      
+      $def(self, '$complete', function $$complete(id, opt, $a, $b) {
+        var block = $$complete.$$p || nil, $post_args, icase, pat, self = this;
+
+        delete $$complete.$$p;
+        
+        ;
+        
+        $post_args = Opal.slice.call(arguments, 2);
+        
+        if ($post_args.length > 0) icase = $post_args.shift();
+        if (icase == null) icase = false;;
+        
+        pat = $post_args;;
+        return $send(self.$__send__(id), 'complete', [opt, icase].concat($to_a(pat)), block.$to_proc());
+      }, -3);
+      
+      $def(self, '$get_candidates', function $$get_candidates(id) {
+        var $yield = $$get_candidates.$$p || nil, self = this;
+
+        delete $$get_candidates.$$p;
+        return Opal.yield1($yield, self.$__send__(id).$keys());
+      }, 1);
+      
+      $def(self, '$each_option', function $$each_option() {
+        var block = $$each_option.$$p || nil, self = this;
+
+        delete $$each_option.$$p;
+        
+        ;
+        return $send(self.$list(), 'each', [], block.$to_proc());
+      }, 0);
+      
+      $def(self, '$summarize', function $$summarize($a) {
+        var block = $$summarize.$$p || nil, $post_args, args, self = this, sum = nil;
+
+        delete $$summarize.$$p;
+        
+        ;
+        
+        $post_args = Opal.slice.call(arguments);
+        
+        args = $post_args;;
+        sum = [];
+        $send(self.$list(), 'reverse_each', [], function $$20(opt){var s = nil;
+
+          
+          
+          if (opt == null) opt = nil;;
+          if ($truthy(opt['$respond_to?']("summarize"))) {
+            
+            s = [];
+            $send(opt, 'summarize', $to_a(args), function $$21(l){
+              
+              
+              if (l == null) l = nil;;
+              return s['$<<'](l);}, 1);
+            return sum.$concat(s.$reverse());
+          } else if (($not(opt) || ($truthy(opt['$empty?']())))) {
+            return sum['$<<']("")
+          } else if ($truthy(opt['$respond_to?']("each_line"))) {
+            return sum.$concat([].concat($to_a(opt.$each_line())).$reverse())
+          } else {
+            return sum.$concat([].concat($to_a(opt.$each())).$reverse())
+          };}, 1);
+        return $send(sum, 'reverse_each', [], block.$to_proc());
+      }, -1);
+      
+      $def(self, '$add_banner', function $$add_banner(to) {
+        var self = this;
+
+        
+        $send(self.$list(), 'each', [], function $$22(opt){
+          
+          
+          if (opt == null) opt = nil;;
+          if ($truthy(opt['$respond_to?']("add_banner"))) {
+            return opt.$add_banner(to)
+          } else {
+            return nil
+          };}, 1);
+        return to;
+      }, 1);
+      return $def(self, '$compsys', function $$compsys($a) {
+        var block = $$compsys.$$p || nil, $post_args, args, self = this;
+
+        delete $$compsys.$$p;
+        
+        ;
+        
+        $post_args = Opal.slice.call(arguments);
+        
+        args = $post_args;;
+        return $send(self.$list(), 'each', [], function $$23(opt){
+          
+          
+          if (opt == null) opt = nil;;
+          if ($truthy(opt['$respond_to?']("compsys"))) {
+            return $send(opt, 'compsys', $to_a(args), block.$to_proc())
+          } else {
+            return nil
+          };}, 1);
+      }, -1);
+    })($nesting[0], null, $nesting);
+    (function($base, $super, $parent_nesting) {
+      var self = $klass($base, $super, 'CompletingHash');
+
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+      
+      self.$include($$('Completion'));
+      return $def(self, '$match', function $$match(key) {try {
+
+        var $a, $b, self = this, values = nil;
+
+        
+        $b = $send(self, 'fetch', [key], function $$24(){var self = $$24.$$s == null ? this : $$24.$$s;
+
+          return self.$raise($$('AmbiguousArgument'), $send(self, 'catch', ["ambiguous"], function $$25(){var self = $$25.$$s == null ? this : $$25.$$s;
+
+            Opal.ret(self.$complete(key))}, {$$arity: 0, $$s: self}))}, {$$arity: 0, $$s: self}), $a = $to_ary($b), (values = $slice.call($a, 0)), $b;
+        return [key].concat($to_a(values));
+        } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
+      }, 1);
+    })($nesting[0], $$('Hash'), $nesting);
+    $const_set($nesting[0], 'ArgumentStyle', $hash2([], {}));
+    $send($$('NoArgument'), 'each', [], function $OptionParser$26(el){var $writer = nil;
+
+      
+      
+      if (el == null) el = nil;;
+      $writer = [el, $$$($$('Switch'), 'NoArgument')];
+      $send($$('ArgumentStyle'), '[]=', $to_a($writer));
+      return $writer[$rb_minus($writer["length"], 1)];}, 1);
+    $send($$('RequiredArgument'), 'each', [], function $OptionParser$27(el){var $writer = nil;
+
+      
+      
+      if (el == null) el = nil;;
+      $writer = [el, $$$($$('Switch'), 'RequiredArgument')];
+      $send($$('ArgumentStyle'), '[]=', $to_a($writer));
+      return $writer[$rb_minus($writer["length"], 1)];}, 1);
+    $send($$('OptionalArgument'), 'each', [], function $OptionParser$28(el){var $writer = nil;
+
+      
+      
+      if (el == null) el = nil;;
+      $writer = [el, $$$($$('Switch'), 'OptionalArgument')];
+      $send($$('ArgumentStyle'), '[]=', $to_a($writer));
+      return $writer[$rb_minus($writer["length"], 1)];}, 1);
+    $$('ArgumentStyle').$freeze();
+    $const_set($nesting[0], 'DefaultList', $$('List').$new());
+    
+    $writer = ["-", $send($$$($$('Switch'), 'NoArgument'), 'new', [], function $OptionParser$29(){
+      return nil}, 0)];
+    $send($$('DefaultList').$short(), '[]=', $to_a($writer));
+    $writer[$rb_minus($writer["length"], 1)];;
+    
+    $writer = ["", $send($$$($$('Switch'), 'NoArgument'), 'new', [], function $OptionParser$30(){var self = $OptionParser$30.$$s == null ? this : $OptionParser$30.$$s;
+
+      return self.$throw("terminate")}, {$$arity: 0, $$s: self})];
+    $send($$('DefaultList').$long(), '[]=', $to_a($writer));
+    $writer[$rb_minus($writer["length"], 1)];;
+    $const_set($nesting[0], 'COMPSYS_HEADER', "\n" + "typeset -A opt_args\n" + "local context state line\n" + "\n" + "_arguments -s -S \\\n");
+    
+    $def(self, '$compsys', function $$compsys(to, name) {
+      var self = this;
+      if ($gvars["0"] == null) $gvars["0"] = nil;
+
+      
+      
+      if (name == null) name = $$('File').$basename($gvars["0"]);;
+      to['$<<']("#compdef " + (name) + "\n");
+      to['$<<']($$('COMPSYS_HEADER'));
+      $send(self, 'visit', ["compsys", $hash2([], {}), $hash2([], {})], function $$31(o, d){
+        
+        
+        if (o == null) o = nil;;
+        
+        if (d == null) d = nil;;
+        return to['$<<']("  \"" + (o) + "[" + (d.$gsub(/[\"\[\]]/, "\\\\\\&")) + "]\" \\\n");}, 2);
+      return to['$<<']("  '*:file:_files' && return 0\n");
+    }, -2);
+    $const_set($nesting[0], 'Officious', $hash2([], {}));
+    
+    $writer = ["help", $send(self, 'proc', [], function $OptionParser$32(parser){var self = $OptionParser$32.$$s == null ? this : $OptionParser$32.$$s;
+
+      
+      
+      if (parser == null) parser = nil;;
+      return $send($$$($$('Switch'), 'NoArgument'), 'new', [], function $$33(arg){var self = $$33.$$s == null ? this : $$33.$$s;
+
+        
+        
+        if (arg == null) arg = nil;;
+        self.$puts(parser.$help());
+        return self.$exit();}, {$$arity: 1, $$s: self});}, {$$arity: 1, $$s: self})];
+    $send($$('Officious'), '[]=', $to_a($writer));
+    $writer[$rb_minus($writer["length"], 1)];;
+    
+    $writer = ["*-completion-bash", $send(self, 'proc', [], function $OptionParser$34(parser){var self = $OptionParser$34.$$s == null ? this : $OptionParser$34.$$s;
+
+      
+      
+      if (parser == null) parser = nil;;
+      return $send($$$($$('Switch'), 'RequiredArgument'), 'new', [], function $$35(arg){var self = $$35.$$s == null ? this : $$35.$$s;
+
+        
+        
+        if (arg == null) arg = nil;;
+        self.$puts(parser.$candidate(arg));
+        return self.$exit();}, {$$arity: 1, $$s: self});}, {$$arity: 1, $$s: self})];
+    $send($$('Officious'), '[]=', $to_a($writer));
+    $writer[$rb_minus($writer["length"], 1)];;
+    
+    $writer = ["*-completion-zsh", $send(self, 'proc', [], function $OptionParser$36(parser){var self = $OptionParser$36.$$s == null ? this : $OptionParser$36.$$s;
+
+      
+      
+      if (parser == null) parser = nil;;
+      return $send($$$($$('Switch'), 'OptionalArgument'), 'new', [], function $$37(arg){var self = $$37.$$s == null ? this : $$37.$$s;
+
+        
+        
+        if (arg == null) arg = nil;;
+        parser.$compsys($$('STDOUT'), arg);
+        return self.$exit();}, {$$arity: 1, $$s: self});}, {$$arity: 1, $$s: self})];
+    $send($$('Officious'), '[]=', $to_a($writer));
+    $writer[$rb_minus($writer["length"], 1)];;
+    
+    $writer = ["version", $send(self, 'proc', [], function $OptionParser$38(parser){var self = $OptionParser$38.$$s == null ? this : $OptionParser$38.$$s;
+
+      
+      
+      if (parser == null) parser = nil;;
+      return $send($$$($$('Switch'), 'OptionalArgument'), 'new', [], function $$39(pkg){var self = $$39.$$s == null ? this : $$39.$$s, $ret_or_1 = nil, v = nil;
+
+        
+        
+        if (pkg == null) pkg = nil;;
+        if ($truthy(pkg)) {
+          
+          
+          var $no_errors = true;try {
+            self.$require("optparse/version")
+          } catch ($err) {
+            $no_errors = false;
+            if (Opal.rescue($err, [$$('LoadError')])) {
+              try {
+                nil
+              } finally { Opal.pop_exception(); }
+            } else { throw $err; }
+          }finally {
+            if ($no_errors) { 
+              
+              if ($truthy(($ret_or_1 = $send(self, 'show_version', $to_a(pkg.$split(/,/)))))) {
+                $ret_or_1
+              } else {
+                self.$abort("" + (parser.$program_name()) + ": no version found in package " + (pkg))
+              };
+              self.$exit();
+            }};
+        };
+        if ($truthy(($ret_or_1 = (v = parser.$ver())))) {
+          $ret_or_1
+        } else {
+          self.$abort("" + (parser.$program_name()) + ": version unknown")
+        };
+        self.$puts(v);
+        return self.$exit();}, {$$arity: 1, $$s: self});}, {$$arity: 1, $$s: self})];
+    $send($$('Officious'), '[]=', $to_a($writer));
+    $writer[$rb_minus($writer["length"], 1)];;
+    $defs(self, '$with', function $OptionParser_with$40($a) {
+      var block = $OptionParser_with$40.$$p || nil, $post_args, args, self = this, opts = nil;
+
+      delete $OptionParser_with$40.$$p;
+      
+      ;
+      
+      $post_args = Opal.slice.call(arguments);
+      
+      args = $post_args;;
+      opts = $send(self, 'new', $to_a(args));
+      $send(opts, 'instance_eval', [], block.$to_proc());
+      return opts;
+    }, -1);
+    $defs(self, '$inc', function $$inc(arg, default$) {
+      var $ret_or_1 = nil;
+
+      
+      
+      if (default$ == null) default$ = nil;;
+      if ($eqeqeq($$('Integer'), ($ret_or_1 = arg))) {
+        return arg['$nonzero?']()
+      } else if ($eqeqeq(nil, $ret_or_1)) {
+        return $rb_plus(default$.$to_i(), 1)
+      } else {
+        return nil
+      };
+    }, -2);
+    
+    $def(self, '$inc', function $$inc($a) {
+      var $post_args, args, self = this;
+
+      
+      
+      $post_args = Opal.slice.call(arguments);
+      
+      args = $post_args;;
+      return $send(self.$class(), 'inc', $to_a(args));
+    }, -1);
+    
+    $def(self, '$initialize', function $$initialize(banner, width, indent) {
+      var $yield = $$initialize.$$p || nil, self = this;
+
+      delete $$initialize.$$p;
+      
+      
+      if (banner == null) banner = nil;;
+      
+      if (width == null) width = 32;;
+      
+      if (indent == null) indent = $rb_times(" ", 4);;
+      self.stack = [$$('DefaultList'), $$('List').$new(), $$('List').$new()];
+      self.program_name = nil;
+      self.banner = banner;
+      self.summary_width = width;
+      self.summary_indent = indent;
+      self.default_argv = $$('ARGV');
+      self.require_exact = false;
+      self.$add_officious();
+      if (($yield !== nil)) {
+        return Opal.yield1($yield, self);
+      } else {
+        return nil
+      };
+    }, -1);
+    
+    $def(self, '$add_officious', function $$add_officious() {
+      var self = this, list = nil;
+
+      
+      list = self.$base();
+      return $send($$('Officious'), 'each', [], function $$41(opt, block){var self = $$41.$$s == null ? this : $$41.$$s, $logical_op_recvr_tmp_1 = nil, $ret_or_1 = nil, $writer = nil;
+
+        
+        
+        if (opt == null) opt = nil;;
+        
+        if (block == null) block = nil;;
+        $logical_op_recvr_tmp_1 = list.$long();
+        if ($truthy(($ret_or_1 = $logical_op_recvr_tmp_1['$[]'](opt)))) {
+          return $ret_or_1
+        } else {
+          
+          $writer = [opt, block.$call(self)];
+          $send($logical_op_recvr_tmp_1, '[]=', $to_a($writer));
+          return $writer[$rb_minus($writer["length"], 1)];
+        };}, {$$arity: 2, $$s: self});
+    }, 0);
+    
+    $def(self, '$terminate', function $$terminate(arg) {
+      var self = this;
+
+      
+      
+      if (arg == null) arg = nil;;
+      return self.$class().$terminate(arg);
+    }, -1);
+    $defs(self, '$terminate', function $$terminate(arg) {
+      var self = this;
+
+      
+      
+      if (arg == null) arg = nil;;
+      return self.$throw("terminate", arg);
+    }, -1);
+    self.stack = [$$('DefaultList')];
+    $defs(self, '$top', function $$top() {
+      
+      return $$('DefaultList')
+    }, 0);
+    
+    $def(self, '$accept', function $$accept($a) {
+      var blk = $$accept.$$p || nil, $post_args, args, self = this;
+
+      delete $$accept.$$p;
+      
+      ;
+      
+      $post_args = Opal.slice.call(arguments);
+      
+      args = $post_args;;
+      return $send(self.$top(), 'accept', $to_a(args), blk.$to_proc());
+    }, -1);
+    $defs(self, '$accept', function $$accept($a) {
+      var blk = $$accept.$$p || nil, $post_args, args, self = this;
+
+      delete $$accept.$$p;
+      
+      ;
+      
+      $post_args = Opal.slice.call(arguments);
+      
+      args = $post_args;;
+      return $send(self.$top(), 'accept', $to_a(args), blk.$to_proc());
+    }, -1);
+    
+    $def(self, '$reject', function $$reject($a) {
+      var blk = $$reject.$$p || nil, $post_args, args, self = this;
+
+      delete $$reject.$$p;
+      
+      ;
+      
+      $post_args = Opal.slice.call(arguments);
+      
+      args = $post_args;;
+      return $send(self.$top(), 'reject', $to_a(args), blk.$to_proc());
+    }, -1);
+    $defs(self, '$reject', function $$reject($a) {
+      var blk = $$reject.$$p || nil, $post_args, args, self = this;
+
+      delete $$reject.$$p;
+      
+      ;
+      
+      $post_args = Opal.slice.call(arguments);
+      
+      args = $post_args;;
+      return $send(self.$top(), 'reject', $to_a(args), blk.$to_proc());
+    }, -1);
+    self.$attr_writer("banner");
+    self.$attr_writer("program_name");
+    self.$attr_accessor("summary_width");
+    self.$attr_accessor("summary_indent");
+    self.$attr_accessor("default_argv");
+    self.$attr_accessor("require_exact");
+    
+    $def(self, '$banner', function $$banner() {
+      var self = this;
+
+      
+      if (!$truthy(self.banner)) {
+        
+        self.banner = ((("Usage: ") + (self.$program_name())) + " [options]")['$+@']();
+        self.$visit("add_banner", self.banner);
+      };
+      return self.banner;
+    }, 0);
+    
+    $def(self, '$program_name', function $$program_name() {
+      var self = this, $ret_or_1 = nil;
+      if ($gvars["0"] == null) $gvars["0"] = nil;
+
+      if ($truthy(($ret_or_1 = self.program_name))) {
+        return $ret_or_1
+      } else {
+        return $$('File').$basename($gvars["0"], ".*")
+      }
+    }, 0);
+    $alias(self, "set_banner", "banner=");
+    $alias(self, "set_program_name", "program_name=");
+    $alias(self, "set_summary_width", "summary_width=");
+    $alias(self, "set_summary_indent", "summary_indent=");
+    self.$attr_writer("version");
+    self.$attr_writer("release");
+    
+    $def(self, '$version', function $$version() {
+      var $a, $b, self = this, $ret_or_1 = nil, $ret_or_2 = nil;
+
+      if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = (($a = self['version'], $a != null && $a !== nil) ? 'instance-variable' : nil))) ? (self.version) : ($ret_or_2))))) {
+        return $ret_or_1
+      } else {
+        
+        if ($truthy(($ret_or_2 = (($b = $$$('::', 'Version', 'skip_raise')) ? 'constant' : nil)))) {
+          return $$$('Version')
+        } else {
+          return $ret_or_2
+        };
+      }
+    }, 0);
+    
+    $def(self, '$release', function $$release() {
+      var $a, $b, $c, self = this, $ret_or_1 = nil, $ret_or_2 = nil, $ret_or_3 = nil;
+
+      if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = ($truthy(($ret_or_3 = (($a = self['release'], $a != null && $a !== nil) ? 'instance-variable' : nil))) ? (self.release) : ($ret_or_3)))) ? ($ret_or_2) : (($truthy(($ret_or_3 = (($b = $$$('::', 'Release', 'skip_raise')) ? 'constant' : nil))) ? ($$$('Release')) : ($ret_or_3))))))) {
+        return $ret_or_1
+      } else {
+        
+        if ($truthy(($ret_or_2 = (($c = $$$('::', 'RELEASE', 'skip_raise')) ? 'constant' : nil)))) {
+          return $$$('RELEASE')
+        } else {
+          return $ret_or_2
+        };
+      }
+    }, 0);
+    
+    $def(self, '$ver', function $$ver() {
+      var self = this, v = nil, str = nil;
+
+      if ($truthy((v = self.$version()))) {
+        
+        str = ((("" + (self.$program_name())) + " ") + ([v].$join(".")))['$+@']();
+        if ($truthy((v = self.$release()))) {
+          str['$<<'](" (" + (v) + ")")
+        };
+        return str;
+      } else {
+        return nil
+      }
+    }, 0);
+    
+    $def(self, '$warn', function $$warn(mesg) {
+      var $yield = $$warn.$$p || nil, self = this;
+      if ($gvars["!"] == null) $gvars["!"] = nil;
+
+      delete $$warn.$$p;
+      
+      
+      if (mesg == null) mesg = $gvars["!"];;
+      return $send2(self, $find_super(self, 'warn', $$warn, false, true), 'warn', ["" + (self.$program_name()) + ": " + (mesg)], null);
+    }, -1);
+    
+    $def(self, '$abort', function $$abort(mesg) {
+      var $yield = $$abort.$$p || nil, self = this;
+      if ($gvars["!"] == null) $gvars["!"] = nil;
+
+      delete $$abort.$$p;
+      
+      
+      if (mesg == null) mesg = $gvars["!"];;
+      return $send2(self, $find_super(self, 'abort', $$abort, false, true), 'abort', ["" + (self.$program_name()) + ": " + (mesg)], null);
+    }, -1);
+    
+    $def(self, '$top', function $$top() {
+      var self = this;
+
+      return self.stack['$[]'](-1)
+    }, 0);
+    
+    $def(self, '$base', function $$base() {
+      var self = this;
+
+      return self.stack['$[]'](1)
+    }, 0);
+    
+    $def(self, '$new', function $OptionParser_new$42() {
+      var $yield = $OptionParser_new$42.$$p || nil, self = this;
+
+      delete $OptionParser_new$42.$$p;
+      
+      self.stack.$push($$('List').$new());
+      if (($yield !== nil)) {
+        return Opal.yield1($yield, self);
+      } else {
+        return self
+      };
+    }, 0);
+    
+    $def(self, '$remove', function $$remove() {
+      var self = this;
+
+      return self.stack.$pop()
+    }, 0);
+    
+    $def(self, '$summarize', function $$summarize(to, width, max, indent) {
+      var blk = $$summarize.$$p || nil, self = this, nl = nil, $ret_or_1 = nil;
+
+      delete $$summarize.$$p;
+      
+      ;
+      
+      if (to == null) to = [];;
+      
+      if (width == null) width = self.summary_width;;
+      
+      if (max == null) max = $rb_minus(width, 1);;
+      
+      if (indent == null) indent = self.summary_indent;;
+      nl = "\n";
+      blk = ($truthy(($ret_or_1 = blk)) ? ($ret_or_1) : ($send(self, 'proc', [], function $$43(l){
+        
+        
+        if (l == null) l = nil;;
+        return to['$<<'](($truthy(l.$index(nl, -1)) ? (l) : ($rb_plus(l, nl))));}, 1)));
+      $send(self, 'visit', ["summarize", $hash2([], {}), $hash2([], {}), width, max, indent], blk.$to_proc());
+      return to;
+    }, -1);
+    
+    $def(self, '$help', function $$help() {
+      var self = this;
+
+      return self.$summarize([self.$banner().$to_s().$sub(/\n?$/, "\n")]).$join()
+    }, 0);
+    $alias(self, "to_s", "help");
+    
+    $def(self, '$to_a', function $$to_a() {
+      var self = this;
+
+      return self.$summarize([self.$banner().$to_s().$split(/^/)]).$join()
+    }, 0);
+    
+    $def(self, '$notwice', function $$notwice(obj, prv, msg) {
+      var self = this;
+
+      
+      if (!($not(prv) || ($eqeq(prv, obj)))) {
+        self.$raise($$('ArgumentError'), "argument " + (msg) + " given twice: " + (obj), $$('ParseError').$filter_backtrace(self.$caller(2)))
+      };
+      return obj;
+    }, 3);
+    self.$private("notwice");
+    $const_set($nesting[0], 'SPLAT_PROC', $send(self, 'proc', [], function $OptionParser$44($a){var $post_args, a;
+
+      
+      
+      $post_args = Opal.slice.call(arguments);
+      
+      a = $post_args;;
+      if ($truthy($rb_le(a.$length(), 1))) {
+        return a.$first()
+      } else {
+        return a
+      };}, -1));
+    
+    $def(self, '$make_switch', function $$make_switch(opts, block) {
+      var $a, $b, self = this, short$ = nil, long$ = nil, nolong = nil, style = nil, pattern = nil, conv = nil, not_pattern = nil, not_conv = nil, not_style = nil, ldesc = nil, sdesc = nil, desc = nil, arg = nil, default_style = nil, default_pattern = nil, klass = nil, q = nil, a = nil, has_arg = nil, $ret_or_2 = nil, s = nil;
+
+      
+      
+      if (block == null) block = nil;;
+      $a = [[], [], []], (short$ = $a[0]), (long$ = $a[1]), (nolong = $a[2]), (style = ($a[3] == null ? nil : $a[3])), (pattern = ($a[4] == null ? nil : $a[4])), (conv = ($a[5] == null ? nil : $a[5])), (not_pattern = ($a[6] == null ? nil : $a[6])), (not_conv = ($a[7] == null ? nil : $a[7])), (not_style = ($a[8] == null ? nil : $a[8])), $a;
+      $a = [[], [], []], (ldesc = $a[0]), (sdesc = $a[1]), (desc = $a[2]), (arg = ($a[3] == null ? nil : $a[3])), $a;
+      default_style = $$$($$('Switch'), 'NoArgument');
+      default_pattern = nil;
+      klass = nil;
+      $b = nil, $a = $to_ary($b), (q = ($a[0] == null ? nil : $a[0])), (a = ($a[1] == null ? nil : $a[1])), $b;
+      has_arg = false;
+      $send(opts, 'each', [], function $$45(o){var $c, $d, self = $$45.$$s == null ? this : $$45.$$s, $ret_or_1 = nil, $ret_or_2 = nil, $ret_or_3 = nil;
+
+        
+        
+        if (o == null) o = nil;;
+        if ($truthy($send(self, 'search', ["atype", o], function $$46(pat, c){var $c, self = $$46.$$s == null ? this : $$46.$$s;
+
+          
+          
+          if (pat == null) pat = nil;;
+          
+          if (c == null) c = nil;;
+          klass = self.$notwice(o, klass, "type");
+          if (($truthy(not_style) && ($neqeq(not_style, $$$($$('Switch'), 'NoArgument'))))) {
+            return $c = [pat, c], (not_pattern = $c[0]), (not_conv = $c[1]), $c
+          } else {
+            return $c = [pat, c], (default_pattern = $c[0]), (conv = $c[1]), $c
+          };}, {$$arity: 2, $$s: self}))) {
+          return nil;
+        };
+        if (($not(($truthy(($ret_or_1 = $$('String')['$==='](o))) ? ($ret_or_1) : ($$('Symbol')['$==='](o)))) && ($truthy(o['$respond_to?']("match"))))) {
+          
+          pattern = self.$notwice(o, pattern, "pattern");
+          if ($truthy(pattern['$respond_to?']("convert"))) {
+            conv = pattern.$method("convert").$to_proc()
+          } else {
+            conv = $$('SPLAT_PROC')
+          };
+          return nil;;
+        };
+        if (($eqeqeq($$('Proc'), ($ret_or_1 = o)) || ($eqeqeq($$('Method'), $ret_or_1)))) {
+          return (block = self.$notwice(o, block, "block"))
+        } else if (($eqeqeq($$('Array'), $ret_or_1) || ($eqeqeq($$('Hash'), $ret_or_1)))) {
+          
+          if (!$eqeqeq($$('CompletingHash'), ($ret_or_2 = pattern))) {
+            if ($eqeqeq(nil, $ret_or_2)) {
+              
+              pattern = $$('CompletingHash').$new();
+              if ($truthy(pattern['$respond_to?']("convert"))) {
+                conv = pattern.$method("convert").$to_proc()
+              };
+            } else {
+              self.$raise($$('ArgumentError'), "argument pattern given twice")
+            }
+          };
+          return $send(o, 'each', [], function $$47(pat, $c){var $post_args, v, $writer = nil;
+
+            
+            
+            if (pat == null) pat = nil;;
+            
+            $post_args = Opal.slice.call(arguments, 1);
+            
+            v = $post_args;;
+            $writer = [pat, $send(v, 'fetch', [0], function $$48(){
+              return pat}, 0)];
+            $send(pattern, '[]=', $to_a($writer));
+            return $writer[$rb_minus($writer["length"], 1)];}, -2);
+        } else if ($eqeqeq($$('Module'), $ret_or_1)) {
+          return self.$raise($$('ArgumentError'), "unsupported argument type: " + (o), $$('ParseError').$filter_backtrace(self.$caller(4)))
+        } else if ($truthy($send($$('ArgumentStyle').$keys(), 'any?', [], function $$49($ret_or_2){
+          
+          
+          if ($ret_or_2 == null) $ret_or_2 = nil;;
+          return $ret_or_2['$===']($ret_or_1);}, 1))) {
+          return (style = self.$notwice($$('ArgumentStyle')['$[]'](o), style, "style"))
+        } else if ($eqeqeq(/^--no-([^\[\]=\s]*)(.+)?/, $ret_or_1)) {
+          
+          $c = [$$('Regexp').$last_match(1), $$('Regexp').$last_match(2)], (q = $c[0]), (a = $c[1]), $c;
+          o = self.$notwice(($truthy(a) ? ($$('Object')) : ($$('TrueClass'))), klass, "type");
+          if (!$truthy(not_style)) {
+            $d = self.$search("atype", o), $c = $to_ary($d), (not_pattern = ($c[0] == null ? nil : $c[0])), (not_conv = ($c[1] == null ? nil : $c[1])), $d
+          };
+          if ($truthy(a)) {
+            not_style = ($truthy(($ret_or_3 = not_style)) ? ($ret_or_3) : (default_style)).$guess((arg = a))
+          };
+          default_style = $$$($$('Switch'), 'NoArgument');
+          if (!$truthy(default_pattern)) {
+            $d = self.$search("atype", $$('FalseClass')), $c = $to_ary($d), (default_pattern = ($c[0] == null ? nil : $c[0])), (conv = ($c[1] == null ? nil : $c[1])), $d
+          };
+          ldesc['$<<']("--no-" + (q));
+          q = q.$downcase().$tr("_", "-");
+          long$['$<<']("no-" + (q));
+          return nolong['$<<'](q);
+        } else if ($eqeqeq(/^--\[no-\]([^\[\]=\s]*)(.+)?/, $ret_or_1)) {
+          
+          $c = [$$('Regexp').$last_match(1), $$('Regexp').$last_match(2)], (q = $c[0]), (a = $c[1]), $c;
+          o = self.$notwice(($truthy(a) ? ($$('Object')) : ($$('TrueClass'))), klass, "type");
+          if ($truthy(a)) {
+            
+            default_style = default_style.$guess((arg = a));
+            if (!$truthy(default_pattern)) {
+              $d = self.$search("atype", o), $c = $to_ary($d), (default_pattern = ($c[0] == null ? nil : $c[0])), (conv = ($c[1] == null ? nil : $c[1])), $d
+            };
+          };
+          ldesc['$<<']("--[no-]" + (q));
+          o = q.$downcase().$tr("_", "-");
+          long$['$<<'](o);
+          if (!$truthy(not_style)) {
+            $d = self.$search("atype", $$('FalseClass')), $c = $to_ary($d), (not_pattern = ($c[0] == null ? nil : $c[0])), (not_conv = ($c[1] == null ? nil : $c[1])), $d
+          };
+          not_style = $$$($$('Switch'), 'NoArgument');
+          return nolong['$<<']("no-" + (o));
+        } else if ($eqeqeq(/^--([^\[\]=\s]*)(.+)?/, $ret_or_1)) {
+          
+          $c = [$$('Regexp').$last_match(1), $$('Regexp').$last_match(2)], (q = $c[0]), (a = $c[1]), $c;
+          if ($truthy(a)) {
+            
+            o = self.$notwice($$('NilClass'), klass, "type");
+            default_style = default_style.$guess((arg = a));
+            if (!$truthy(default_pattern)) {
+              $d = self.$search("atype", o), $c = $to_ary($d), (default_pattern = ($c[0] == null ? nil : $c[0])), (conv = ($c[1] == null ? nil : $c[1])), $d
+            };
+          };
+          ldesc['$<<']("--" + (q));
+          o = q.$downcase().$tr("_", "-");
+          return long$['$<<'](o);
+        } else if ($eqeqeq(/^-(\[\^?\]?(?:[^\\\]]|\\.)*\])(.+)?/, $ret_or_1)) {
+          
+          $c = [$$('Regexp').$last_match(1), $$('Regexp').$last_match(2)], (q = $c[0]), (a = $c[1]), $c;
+          o = self.$notwice($$('Object'), klass, "type");
+          if ($truthy(a)) {
+            
+            default_style = default_style.$guess((arg = a));
+            if (!$truthy(default_pattern)) {
+              $d = self.$search("atype", o), $c = $to_ary($d), (default_pattern = ($c[0] == null ? nil : $c[0])), (conv = ($c[1] == null ? nil : $c[1])), $d
+            };
+          } else {
+            has_arg = true
+          };
+          sdesc['$<<']("-" + (q));
+          return short$['$<<']($$('Regexp').$new(q));
+        } else if ($eqeqeq(/^-(.)(.+)?/, $ret_or_1)) {
+          
+          $c = [$$('Regexp').$last_match(1), $$('Regexp').$last_match(2)], (q = $c[0]), (a = $c[1]), $c;
+          if ($truthy(a)) {
+            
+            o = self.$notwice($$('NilClass'), klass, "type");
+            default_style = default_style.$guess((arg = a));
+            if (!$truthy(default_pattern)) {
+              $d = self.$search("atype", o), $c = $to_ary($d), (default_pattern = ($c[0] == null ? nil : $c[0])), (conv = ($c[1] == null ? nil : $c[1])), $d
+            };
+          };
+          sdesc['$<<']("-" + (q));
+          return short$['$<<'](q);
+        } else if ($eqeqeq(/^=/, $ret_or_1)) {
+          
+          style = self.$notwice(default_style.$guess((arg = o)), style, "style");
+          if ($truthy(default_pattern)) {
+            return nil
+          } else {
+            return $d = self.$search("atype", $$('Object')), $c = $to_ary($d), (default_pattern = ($c[0] == null ? nil : $c[0])), (conv = ($c[1] == null ? nil : $c[1])), $d
+          };
+        } else {
+          return desc.$push(o)
+        };}, {$$arity: 1, $$s: self});
+      if (!$truthy(default_pattern)) {
+        $b = self.$search("atype", default_style.$pattern()), $a = $to_ary($b), (default_pattern = ($a[0] == null ? nil : $a[0])), (conv = ($a[1] == null ? nil : $a[1])), $b
+      };
+      if ($not(($truthy(($ret_or_2 = short$['$empty?']())) ? (long$['$empty?']()) : ($ret_or_2)))) {
+        
+        if (($truthy(has_arg) && ($eqeq(default_style, $$$($$('Switch'), 'NoArgument'))))) {
+          default_style = $$$($$('Switch'), 'RequiredArgument')
+        };
+        s = ($truthy(($ret_or_2 = style)) ? ($ret_or_2) : (default_style)).$new(($truthy(($ret_or_2 = pattern)) ? ($ret_or_2) : (default_pattern)), conv, sdesc, ldesc, arg, desc, block);
+      } else if ($not(block)) {
+        
+        if (($truthy(style) || ($truthy(pattern)))) {
+          self.$raise($$('ArgumentError'), "no switch given", $$('ParseError').$filter_backtrace(self.$caller()))
+        };
+        s = desc;
+      } else {
+        
+        short$['$<<'](pattern);
+        s = ($truthy(($ret_or_2 = style)) ? ($ret_or_2) : (default_style)).$new(pattern, conv, nil, nil, arg, desc, block);
+      };
+      return [s, short$, long$, ($truthy(not_style) ? (not_style.$new(not_pattern, not_conv, sdesc, ldesc, nil, desc, block)) : nil), nolong];
+    }, -2);
+    
+    $def(self, '$define', function $$define($a) {
+      var block = $$define.$$p || nil, $post_args, opts, self = this, sw = nil;
+
+      delete $$define.$$p;
+      
+      ;
+      
+      $post_args = Opal.slice.call(arguments);
+      
+      opts = $post_args;;
+      $send(self.$top(), 'append', $to_a((sw = self.$make_switch(opts, block))));
+      return sw['$[]'](0);
+    }, -1);
+    
+    $def(self, '$on', function $$on($a) {
+      var block = $$on.$$p || nil, $post_args, opts, self = this;
+
+      delete $$on.$$p;
+      
+      ;
+      
+      $post_args = Opal.slice.call(arguments);
+      
+      opts = $post_args;;
+      $send(self, 'define', $to_a(opts), block.$to_proc());
+      return self;
+    }, -1);
+    $alias(self, "def_option", "define");
+    
+    $def(self, '$define_head', function $$define_head($a) {
+      var block = $$define_head.$$p || nil, $post_args, opts, self = this, sw = nil;
+
+      delete $$define_head.$$p;
+      
+      ;
+      
+      $post_args = Opal.slice.call(arguments);
+      
+      opts = $post_args;;
+      $send(self.$top(), 'prepend', $to_a((sw = self.$make_switch(opts, block))));
+      return sw['$[]'](0);
+    }, -1);
+    
+    $def(self, '$on_head', function $$on_head($a) {
+      var block = $$on_head.$$p || nil, $post_args, opts, self = this;
+
+      delete $$on_head.$$p;
+      
+      ;
+      
+      $post_args = Opal.slice.call(arguments);
+      
+      opts = $post_args;;
+      $send(self, 'define_head', $to_a(opts), block.$to_proc());
+      return self;
+    }, -1);
+    $alias(self, "def_head_option", "define_head");
+    
+    $def(self, '$define_tail', function $$define_tail($a) {
+      var block = $$define_tail.$$p || nil, $post_args, opts, self = this, sw = nil;
+
+      delete $$define_tail.$$p;
+      
+      ;
+      
+      $post_args = Opal.slice.call(arguments);
+      
+      opts = $post_args;;
+      $send(self.$base(), 'append', $to_a((sw = self.$make_switch(opts, block))));
+      return sw['$[]'](0);
+    }, -1);
+    
+    $def(self, '$on_tail', function $$on_tail($a) {
+      var block = $$on_tail.$$p || nil, $post_args, opts, self = this;
+
+      delete $$on_tail.$$p;
+      
+      ;
+      
+      $post_args = Opal.slice.call(arguments);
+      
+      opts = $post_args;;
+      $send(self, 'define_tail', $to_a(opts), block.$to_proc());
+      return self;
+    }, -1);
+    $alias(self, "def_tail_option", "define_tail");
+    
+    $def(self, '$separator', function $$separator(string) {
+      var self = this;
+
+      return self.$top().$append(string, nil, nil)
+    }, 1);
+    
+    $def(self, '$order', function $$order($a, $b) {
+      var nonopt = $$order.$$p || nil, $post_args, $kwargs, argv, into, self = this;
+
+      delete $$order.$$p;
+      
+      ;
+      
+      $post_args = Opal.slice.call(arguments);
+      
+      $kwargs = Opal.extract_kwargs($post_args);
+      
+      if ($kwargs == null) {
+        $kwargs = $hash2([], {});
+      } else if (!$kwargs.$$is_hash) {
+        throw Opal.ArgumentError.$new('expected kwargs');
+      };
+      
+      argv = $post_args;;
+      
+      into = $kwargs.$$smap["into"];
+      if (into == null) into = nil;
+      if (($eqeq(argv.$size(), 1) && ($eqeqeq($$('Array'), argv['$[]'](0))))) {
+        argv = argv['$[]'](0).$dup()
+      };
+      return $send(self, 'order!', [argv, $hash2(["into"], {"into": into})], nonopt.$to_proc());
+    }, -1);
+    
+    $def(self, '$order!', function $OptionParser_order$excl$50($a, $b) {
+      var nonopt = $OptionParser_order$excl$50.$$p || nil, $post_args, $kwargs, argv, into, self = this, setter = nil;
+
+      delete $OptionParser_order$excl$50.$$p;
+      
+      ;
+      
+      $post_args = Opal.slice.call(arguments);
+      
+      $kwargs = Opal.extract_kwargs($post_args);
+      
+      if ($kwargs == null) {
+        $kwargs = $hash2([], {});
+      } else if (!$kwargs.$$is_hash) {
+        throw Opal.ArgumentError.$new('expected kwargs');
+      };
+      
+      if ($post_args.length > 0) argv = $post_args.shift();
+      if (argv == null) argv = self.$default_argv();;
+      
+      into = $kwargs.$$smap["into"];
+      if (into == null) into = nil;
+      if ($truthy(into)) {
+        setter = $lambda(function $$51(name, val){var $writer = nil;
+
+          
+          
+          if (name == null) name = nil;;
+          
+          if (val == null) val = nil;;
+          $writer = [name.$to_sym(), val];
+          $send(into, '[]=', $to_a($writer));
+          return $writer[$rb_minus($writer["length"], 1)];}, 2)
+      };
+      return $send(self, 'parse_in_order', [argv, setter], nonopt.$to_proc());
+    }, -1);
+    
+    $def(self, '$parse_in_order', function $$parse_in_order(argv, setter) {
+      var nonopt = $$parse_in_order.$$p || nil, $a, $b, self = this, opt = nil, arg = nil, val = nil, rest = nil, $ret_or_2 = nil;
+
+      delete $$parse_in_order.$$p;
+      
+      ;
+      
+      if (argv == null) argv = self.$default_argv();;
+      
+      if (setter == null) setter = nil;;
+      $b = nil, $a = $to_ary($b), (opt = ($a[0] == null ? nil : $a[0])), (arg = ($a[1] == null ? nil : $a[1])), (val = ($a[2] == null ? nil : $a[2])), (rest = ($a[3] == null ? nil : $a[3])), $b;
+      nonopt = ($truthy(($ret_or_2 = nonopt)) ? ($ret_or_2) : ($send(self, 'proc', [], function $$52(a){var self = $$52.$$s == null ? this : $$52.$$s;
+
+        
+        
+        if (a == null) a = nil;;
+        return self.$throw("terminate", a);}, {$$arity: 1, $$s: self})));
+      if ($truthy((arg = $send(self, 'catch', ["terminate"], function $$53(){var $c, $d, $e, self = $$53.$$s == null ? this : $$53.$$s, sw = nil, cb = nil, eq = nil, has_arg = nil, $ret_or_3 = nil;
+        if ($gvars["!"] == null) $gvars["!"] = nil;
+
+        
+        while ($truthy((arg = argv.$shift()))) {
+          if ($eqeqeq(/^--([^=]*)(?:=(.*))?/m, ($ret_or_2 = arg))) {
+            
+            $d = [$$('Regexp').$last_match(1), $$('Regexp').$last_match(2)], (opt = $d[0]), (rest = $d[1]), $d;
+            opt = opt.$tr("_", "-");
+            
+            try {
+              
+              $e = self.$complete("long", opt, true), $d = $to_ary($e), (sw = ($d[0] == null ? nil : $d[0])), $e;
+              if (($truthy(self.$require_exact()) && ($not(sw.$long()['$include?'](arg))))) {
+                self.$raise($$('InvalidOption'), arg)
+              };
+            } catch ($err) {
+              if (Opal.rescue($err, [$$('ParseError')])) {
+                try {
+                  self.$raise($gvars["!"].$set_option(arg, true))
+                } finally { Opal.pop_exception(); }
+              } else { throw $err; }
+            };;
+            
+            try {
+              
+              $e = $send(sw, 'parse', [rest, argv], function $$54($f){var $post_args, exc, self = $$54.$$s == null ? this : $$54.$$s;
+
+                
+                
+                $post_args = Opal.slice.call(arguments);
+                
+                exc = $post_args;;
+                return $send(self, 'raise', $to_a(exc));}, {$$arity: -1, $$s: self}), $d = $to_ary($e), (opt = ($d[0] == null ? nil : $d[0])), (cb = ($d[1] == null ? nil : $d[1])), (val = ($d[2] == null ? nil : $d[2])), $e;
+              if ($truthy(cb)) {
+                val = cb.$call(val)
+              };
+              if ($truthy(setter)) {
+                setter.$call(sw.$switch_name(), val)
+              };
+            } catch ($err) {
+              if (Opal.rescue($err, [$$('ParseError')])) {
+                try {
+                  self.$raise($gvars["!"].$set_option(arg, rest))
+                } finally { Opal.pop_exception(); }
+              } else { throw $err; }
+            };;
+          } else if ($eqeqeq(/^-(.)((=).*|.+)?/m, $ret_or_2)) {
+            
+            $d = [$$('Regexp').$last_match(3), $$('Regexp').$last_match(2), $$('Regexp').$last_match(1)], (eq = $d[0]), (rest = $d[1]), (opt = $d[2]), $d;
+            $d = [eq, rest], (has_arg = $d[0]), (val = $d[1]), $d;
+            
+            try {
+              
+              $e = self.$search("short", opt), $d = $to_ary($e), (sw = ($d[0] == null ? nil : $d[0])), $e;
+              if (!$truthy(sw)) {
+                
+                try {
+                  
+                  $e = self.$complete("short", opt), $d = $to_ary($e), (sw = ($d[0] == null ? nil : $d[0])), $e;
+                  val = arg.$delete_prefix("-");
+                  has_arg = true;
+                } catch ($err) {
+                  if (Opal.rescue($err, [$$('InvalidOption')])) {
+                    try {
+                      
+                      if ($truthy(self.$require_exact())) {
+                        self.$raise()
+                      };
+                      $e = self.$complete("long", opt), $d = $to_ary($e), (sw = ($d[0] == null ? nil : $d[0])), $e;
+                      eq = ($truthy(($ret_or_3 = eq)) ? ($ret_or_3) : (rest['$!']()));
+                    } finally { Opal.pop_exception(); }
+                  } else { throw $err; }
+                };
+              };
+            } catch ($err) {
+              if (Opal.rescue($err, [$$('ParseError')])) {
+                try {
+                  self.$raise($gvars["!"].$set_option(arg, true))
+                } finally { Opal.pop_exception(); }
+              } else { throw $err; }
+            };;
+            
+            
+            var $no_errors = true;try {
+              $e = $send(sw, 'parse', [val, argv], function $$55($f){var $post_args, exc, self = $$55.$$s == null ? this : $$55.$$s;
+
+                
+                
+                $post_args = Opal.slice.call(arguments);
+                
+                exc = $post_args;;
+                if ($truthy(eq)) {
+                  return $send(self, 'raise', $to_a(exc))
+                } else {
+                  return nil
+                };}, {$$arity: -1, $$s: self}), $d = $to_ary($e), (opt = ($d[0] == null ? nil : $d[0])), (cb = ($d[1] == null ? nil : $d[1])), (val = ($d[2] == null ? nil : $d[2])), $e
+            } catch ($err) {
+              $no_errors = false;
+              if (Opal.rescue($err, [$$('ParseError')])) {
+                try {
+                  self.$raise($gvars["!"].$set_option(arg, $rb_gt(arg.$length(), 2)))
+                } finally { Opal.pop_exception(); }
+              } else { throw $err; }
+            }finally {
+              if ($no_errors) { 
+                if ((($truthy(has_arg) && ($not(eq))) && ($eqeq(arg, "-" + (opt))))) {
+                  self.$raise($$('InvalidOption'), arg)
+                }
+              }};;
+            
+            try {
+              
+              if (($truthy(opt) && (($not(rest) || ($neqeq((opt = opt.$sub(/^-*/, "-")), "-")))))) {
+                argv.$unshift(opt)
+              };
+              if ($truthy(cb)) {
+                val = cb.$call(val)
+              };
+              if ($truthy(setter)) {
+                setter.$call(sw.$switch_name(), val)
+              };
+            } catch ($err) {
+              if (Opal.rescue($err, [$$('ParseError')])) {
+                try {
+                  self.$raise($gvars["!"].$set_option(arg, $rb_gt(arg.$length(), 2)))
+                } finally { Opal.pop_exception(); }
+              } else { throw $err; }
+            };;
+          } else {
+            $send(self, 'catch', ["prune"], function $$56(){var self = $$56.$$s == null ? this : $$56.$$s;
+
+              
+              $send(self, 'visit', ["each_option"], function $$57(sw0){
+                
+                
+                if (sw0 == null) sw0 = nil;;
+                sw = sw0;
+                if (($eqeqeq($$('Switch'), sw) && ($truthy(sw['$match_nonswitch?'](arg))))) {
+                  return sw.$block().$call(arg)
+                } else {
+                  return nil
+                };}, 1);
+              return nonopt.$call(arg);}, {$$arity: 0, $$s: self})
+          }
+        };
+        return nil;}, {$$arity: 0, $$s: self})))) {
+        argv.$unshift(arg)
+      };
+      $send(self, 'visit', ["search", "short", nil], function $$58(sw){
+        
+        
+        if (sw == null) sw = nil;;
+        if ($truthy(sw.$pattern())) {
+          return nil
+        } else {
+          return $send(sw.$block(), 'call', $to_a(argv))
+        };}, 1);
+      return argv;
+    }, -1);
+    self.$private("parse_in_order");
+    
+    $def(self, '$permute', function $$permute($a, $b) {
+      var $post_args, $kwargs, argv, into, self = this;
+
+      
+      
+      $post_args = Opal.slice.call(arguments);
+      
+      $kwargs = Opal.extract_kwargs($post_args);
+      
+      if ($kwargs == null) {
+        $kwargs = $hash2([], {});
+      } else if (!$kwargs.$$is_hash) {
+        throw Opal.ArgumentError.$new('expected kwargs');
+      };
+      
+      argv = $post_args;;
+      
+      into = $kwargs.$$smap["into"];
+      if (into == null) into = nil;
+      if (($eqeq(argv.$size(), 1) && ($eqeqeq($$('Array'), argv['$[]'](0))))) {
+        argv = argv['$[]'](0).$dup()
+      };
+      return self['$permute!'](argv, $hash2(["into"], {"into": into}));
+    }, -1);
+    
+    $def(self, '$permute!', function $OptionParser_permute$excl$59($a, $b) {
+      var $post_args, $kwargs, argv, into, self = this, nonopts = nil, $writer = nil;
+
+      
+      
+      $post_args = Opal.slice.call(arguments);
+      
+      $kwargs = Opal.extract_kwargs($post_args);
+      
+      if ($kwargs == null) {
+        $kwargs = $hash2([], {});
+      } else if (!$kwargs.$$is_hash) {
+        throw Opal.ArgumentError.$new('expected kwargs');
+      };
+      
+      if ($post_args.length > 0) argv = $post_args.shift();
+      if (argv == null) argv = self.$default_argv();;
+      
+      into = $kwargs.$$smap["into"];
+      if (into == null) into = nil;
+      nonopts = [];
+      $send(self, 'order!', [argv, $hash2(["into"], {"into": into})], nonopts.$method("<<").$to_proc());
+      
+      $writer = [0, 0, nonopts];
+      $send(argv, '[]=', $to_a($writer));
+      $writer[$rb_minus($writer["length"], 1)];;
+      return argv;
+    }, -1);
+    
+    $def(self, '$parse', function $$parse($a, $b) {
+      var $post_args, $kwargs, argv, into, self = this;
+
+      
+      
+      $post_args = Opal.slice.call(arguments);
+      
+      $kwargs = Opal.extract_kwargs($post_args);
+      
+      if ($kwargs == null) {
+        $kwargs = $hash2([], {});
+      } else if (!$kwargs.$$is_hash) {
+        throw Opal.ArgumentError.$new('expected kwargs');
+      };
+      
+      argv = $post_args;;
+      
+      into = $kwargs.$$smap["into"];
+      if (into == null) into = nil;
+      if (($eqeq(argv.$size(), 1) && ($eqeqeq($$('Array'), argv['$[]'](0))))) {
+        argv = argv['$[]'](0).$dup()
+      };
+      return self['$parse!'](argv, $hash2(["into"], {"into": into}));
+    }, -1);
+    
+    $def(self, '$parse!', function $OptionParser_parse$excl$60($a, $b) {
+      var $post_args, $kwargs, argv, into, self = this;
+
+      
+      
+      $post_args = Opal.slice.call(arguments);
+      
+      $kwargs = Opal.extract_kwargs($post_args);
+      
+      if ($kwargs == null) {
+        $kwargs = $hash2([], {});
+      } else if (!$kwargs.$$is_hash) {
+        throw Opal.ArgumentError.$new('expected kwargs');
+      };
+      
+      if ($post_args.length > 0) argv = $post_args.shift();
+      if (argv == null) argv = self.$default_argv();;
+      
+      into = $kwargs.$$smap["into"];
+      if (into == null) into = nil;
+      if ($truthy($$('ENV')['$include?']("POSIXLY_CORRECT"))) {
+        return self['$order!'](argv, $hash2(["into"], {"into": into}))
+      } else {
+        return self['$permute!'](argv, $hash2(["into"], {"into": into}))
+      };
+    }, -1);
+    
+    $def(self, '$getopts', function $$getopts($a) {
+      var $post_args, args, $b, self = this, argv = nil, single_options = nil, long_options = nil, result = nil;
+
+      
+      
+      $post_args = Opal.slice.call(arguments);
+      
+      args = $post_args;;
+      argv = ($eqeqeq($$('Array'), args.$first()) ? (args.$shift()) : (self.$default_argv()));
+      $b = [].concat($to_a(args)), (single_options = ($b[0] == null ? nil : $b[0])), (long_options = $slice.call($b, 1)), $b;
+      result = $hash2([], {});
+      if ($truthy(single_options)) {
+        $send(single_options, 'scan', [/(.)(:)?/], function $$61(opt, val){var self = $$61.$$s == null ? this : $$61.$$s, $writer = nil;
+
+          
+          
+          if (opt == null) opt = nil;;
+          
+          if (val == null) val = nil;;
+          if ($truthy(val)) {
+            
+            
+            $writer = [opt, nil];
+            $send(result, '[]=', $to_a($writer));
+            $writer[$rb_minus($writer["length"], 1)];;
+            return self.$define("-" + (opt) + " VAL");
+          } else {
+            
+            
+            $writer = [opt, false];
+            $send(result, '[]=', $to_a($writer));
+            $writer[$rb_minus($writer["length"], 1)];;
+            return self.$define("-" + (opt));
+          };}, {$$arity: 2, $$s: self})
+      };
+      $send(long_options, 'each', [], function $$62(arg){var $c, $d, self = $$62.$$s == null ? this : $$62.$$s, desc = nil, opt = nil, val = nil, $writer = nil, $ret_or_2 = nil;
+
+        
+        
+        if (arg == null) arg = nil;;
+        $d = arg.$split(";", 2), $c = $to_ary($d), (arg = ($c[0] == null ? nil : $c[0])), (desc = ($c[1] == null ? nil : $c[1])), $d;
+        $d = arg.$split(":", 2), $c = $to_ary($d), (opt = ($c[0] == null ? nil : $c[0])), (val = ($c[1] == null ? nil : $c[1])), $d;
+        if ($truthy(val)) {
+          
+          
+          $writer = [opt, ($truthy(val['$empty?']()) ? (nil) : (val))];
+          $send(result, '[]=', $to_a($writer));
+          $writer[$rb_minus($writer["length"], 1)];;
+          return $send(self, 'define', ["--" + (opt) + "=" + (($truthy(($ret_or_2 = result['$[]'](opt))) ? ($ret_or_2) : ("VAL")))].concat($to_a([desc].$compact())));
+        } else {
+          
+          
+          $writer = [opt, false];
+          $send(result, '[]=', $to_a($writer));
+          $writer[$rb_minus($writer["length"], 1)];;
+          return $send(self, 'define', ["--" + (opt)].concat($to_a([desc].$compact())));
+        };}, {$$arity: 1, $$s: self});
+      self.$parse_in_order(argv, result.$method("[]="));
+      return result;
+    }, -1);
+    $defs(self, '$getopts', function $$getopts($a) {
+      var $post_args, args, self = this;
+
+      
+      
+      $post_args = Opal.slice.call(arguments);
+      
+      args = $post_args;;
+      return $send(self.$new(), 'getopts', $to_a(args));
+    }, -1);
+    
+    $def(self, '$visit', function $$visit(id, $a) {
+      var block = $$visit.$$p || nil, $post_args, args, self = this;
+
+      delete $$visit.$$p;
+      
+      ;
+      
+      $post_args = Opal.slice.call(arguments, 1);
+      
+      args = $post_args;;
+      $send(self.stack, 'reverse_each', [], function $$63(el){
+        
+        
+        if (el == null) el = nil;;
+        return $send(el, '__send__', [id].concat($to_a(args)), block.$to_proc());}, 1);
+      return nil;
+    }, -2);
+    self.$private("visit");
+    
+    $def(self, '$search', function $$search(id, key) {
+      var $yield = $$search.$$p || nil, self = this, block_given = nil, retval = nil;
+
+      delete $$search.$$p;
+      
+      block_given = ($yield !== nil);
+      retval = nil;
+      (function(){var $brk = Opal.new_brk(); try {return $send(self, 'visit', ["search", id, key], function $$64(k){
+        
+        
+        if (k == null) k = nil;;
+        retval = ($truthy(block_given) ? (Opal.yield1($yield, k)) : (k));
+        
+        Opal.brk(nil, $brk);}, {$$arity: 1, $$brk: $brk})
+      } catch (err) { if (err === $brk) { return err.$v } else { throw err } }})();
+      return retval;
+    }, 2);
+    self.$private("search");
+    
+    $def(self, '$complete', function $$complete(typ, opt, $a, $b) {try {
+
+      var $post_args, icase, pat, self = this, retval = nil, ambiguous = nil, exc = nil;
+
+      
+      
+      $post_args = Opal.slice.call(arguments, 2);
+      
+      if ($post_args.length > 0) icase = $post_args.shift();
+      if (icase == null) icase = false;;
+      
+      pat = $post_args;;
+      if ($truthy(pat['$empty?']())) {
+        
+        retval = nil;
+        (function(){var $brk = Opal.new_brk(); try {return $send(self, 'search', [typ, opt], function $$65(sw){
+          
+          
+          if (sw == null) sw = nil;;
+          retval = [sw, opt];
+          
+          Opal.brk(nil, $brk);}, {$$arity: 1, $$brk: $brk})
+        } catch (err) { if (err === $brk) { return err.$v } else { throw err } }})();
+        if ($truthy(retval)) {
+          return retval
+        };
+      };
+      ambiguous = (function(){var $brk = Opal.new_brk(); try {return $send(self, 'catch', ["ambiguous"], function $$66(){var self = $$66.$$s == null ? this : $$66.$$s;
+
+        
+        retval = nil;
+        (function(){var $brk = Opal.new_brk(); try {return $send(self, 'visit', ["complete", typ, opt, icase].concat($to_a(pat)), function $$67(o, $c){var $post_args, sw;
+
+          
+          
+          if (o == null) o = nil;;
+          
+          $post_args = Opal.slice.call(arguments, 1);
+          
+          sw = $post_args;;
+          retval = sw;
+          
+          Opal.brk(nil, $brk);}, {$$arity: -2, $$brk: $brk})
+        } catch (err) { if (err === $brk) { return err.$v } else { throw err } }})();
+        if ($truthy(retval)) {
+          Opal.ret(retval)
+        } else {
+          return nil
+        };}, {$$arity: 0, $$s: self, $$brk: $brk})
+      } catch (err) { if (err === $brk) { return err.$v } else { throw err } }})();
+      exc = ($truthy(ambiguous) ? ($$('AmbiguousOption')) : ($$('InvalidOption')));
+      return self.$raise(exc.$new(opt, $hash2(["additional"], {"additional": self.$method("additional_message").$curry()['$[]'](typ)})));
+      } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
+    }, -3);
+    self.$private("complete");
+    
+    $def(self, '$additional_message', function $$additional_message(typ, opt) {
+      var $a, $b, self = this, all_candidates = nil, checker = nil;
+
+      
+      if (!(($truthy(typ) && ($truthy(opt))) && ($truthy((($b = $$('DidYouMean', 'skip_raise')) && ($a = $$$($b, 'SpellChecker', 'skip_raise')) ? 'constant' : nil))))) {
+        return nil
+      };
+      all_candidates = [];
+      $send(self, 'visit', ["get_candidates", typ], function $$68(candidates){
+        
+        
+        if (candidates == null) candidates = nil;;
+        return all_candidates.$concat(candidates);}, 1);
+      $send(all_candidates, 'select!', [], function $$69(cand){
+        
+        
+        if (cand == null) cand = nil;;
+        return cand['$is_a?']($$('String'));}, 1);
+      checker = $$$($$('DidYouMean'), 'SpellChecker').$new($hash2(["dictionary"], {"dictionary": all_candidates}));
+      return $$('DidYouMean').$formatter().$message_for(all_candidates['$&'](checker.$correct(opt)));
+    }, 2);
+    
+    $def(self, '$candidate', function $$candidate(word) {
+      var $a, $b, self = this, list = nil, $ret_or_2 = nil, long$ = nil, short$ = nil, arg = nil, argpat = nil, pat = nil;
+
+      
+      list = [];
+      if ($eqeqeq("-", ($ret_or_2 = word))) {
+        long$ = (short$ = true)
+      } else if ($eqeqeq(/^--/, $ret_or_2)) {
+        
+        $b = word.$split(/=/, 2), $a = $to_ary($b), (word = ($a[0] == null ? nil : $a[0])), (arg = ($a[1] == null ? nil : $a[1])), $b;
+        if (($truthy(arg) && ($not(arg['$empty?']())))) {
+          argpat = $$('Completion').$regexp(arg, false)
+        };
+        long$ = true;
+      } else if ($eqeqeq(/^-/, $ret_or_2)) {
+        short$ = true
+      } else {
+        nil
+      };
+      pat = $$('Completion').$regexp(word, long$);
+      $send(self, 'visit', ["each_option"], function $$70(opt){var opts = nil;
+
+        
+        
+        if (opt == null) opt = nil;;
+        if (!$eqeqeq($$('Switch'), opt)) {
+          return nil;
+        };
+        opts = $rb_plus(($truthy(long$) ? (opt.$long()) : ([])), ($truthy(short$) ? (opt.$short()) : ([])));
+        if ($truthy(pat)) {
+          opts = $send($send($$('Completion'), 'candidate', [word, true, pat], opts.$method("each").$to_proc()), 'map', [], "first".$to_proc())
+        };
+        if ($truthy(/^=/['$=~'](opt.$arg()))) {
+          
+          $send(opts, 'map!', [], function $$71(sw){
+            
+            
+            if (sw == null) sw = nil;;
+            return $rb_plus(sw, "=");}, 1);
+          if (($truthy(arg) && ($eqeqeq($$('CompletingHash'), opt.$pattern())))) {
+            if ($truthy((opts = opt.$pattern().$candidate(arg, false, argpat)))) {
+              $send(opts, 'map!', [], "last".$to_proc())
+            }
+          };
+        };
+        return list.$concat(opts);}, 1);
+      return list;
+    }, 1);
+    
+    $def(self, '$load', function $$load(filename) {
+      var $a, self = this, basename = nil;
+      if ($gvars["0"] == null) $gvars["0"] = nil;
+
+      
+      
+      if (filename == null) filename = nil;;
+      if (!$truthy(filename)) {
+        
+        basename = $$('File').$basename($gvars["0"], ".*");
+        
+        try {
+          if ($truthy(self.$load($$('File').$expand_path(basename, "~/.options")))) {
+            return true
+          }
+        } catch ($err) {
+          if (Opal.rescue($err, [$$('StandardError')])) {
+            try {
+              nil
+            } finally { Opal.pop_exception(); }
+          } else { throw $err; }
+        };;
+        basename['$<<'](".options");
+        return $send([$$('ENV')['$[]']("XDG_CONFIG_HOME"), "~/.config"].concat($to_a(($a = $$('ENV')['$[]']("XDG_CONFIG_DIRS"), ($a === nil || $a == null) ? nil : $send($a, 'split', [$$$($$('File'), 'PATH_SEPARATOR')])))).concat(["~/config/settings"]), 'any?', [], function $$72(dir){var self = $$72.$$s == null ? this : $$72.$$s;
+
+          
+          
+          if (dir == null) dir = nil;;
+          if (($not(dir) || ($truthy(dir['$empty?']())))) {
+            return nil;
+          };
+          
+          try {
+            return self.$load($$('File').$expand_path(basename, dir))
+          } catch ($err) {
+            if (Opal.rescue($err, [$$('StandardError')])) {
+              try {
+                return nil
+              } finally { Opal.pop_exception(); }
+            } else { throw $err; }
+          };;}, {$$arity: 1, $$s: self});
+      };
+      
+      try {
+        
+        $send(self, 'parse', $to_a($send($$('IO').$readlines(filename), 'each', [], "chomp!".$to_proc())));
+        return true;
+      } catch ($err) {
+        if (Opal.rescue($err, [$$$($$('Errno'), 'ENOENT'), $$$($$('Errno'), 'ENOTDIR')])) {
+          try {
+            return false
+          } finally { Opal.pop_exception(); }
+        } else { throw $err; }
+      };;
+    }, -1);
+    
+    $def(self, '$environment', function $$environment(env) {
+      var self = this, $ret_or_2 = nil, $ret_or_3 = nil;
+      if ($gvars["0"] == null) $gvars["0"] = nil;
+
+      
+      
+      if (env == null) env = $$('File').$basename($gvars["0"], ".*");;
+      if ($truthy(($ret_or_2 = (env = ($truthy(($ret_or_3 = $$('ENV')['$[]'](env))) ? ($ret_or_3) : ($$('ENV')['$[]'](env.$upcase()))))))) {
+        $ret_or_2
+      } else {
+        return nil
+      };
+      self.$require("shellwords");
+      return $send(self, 'parse', $to_a($$('Shellwords').$shellwords(env)));
+    }, -1);
+    $send(self, 'accept', [$$('Object')], function $OptionParser$73(s){var $ret_or_2 = nil;
+
+      
+      
+      if (s == null) s = nil;;
+      if ($truthy(($ret_or_2 = s))) {
+        return $ret_or_2
+      } else {
+        return s['$nil?']()
+      };}, {$$arity: 1, $$has_trailing_comma_in_args: true});
+    $send(self, 'accept', [$$('NilClass')], function $OptionParser$74(s){
+      
+      
+      if (s == null) s = nil;;
+      return s;}, {$$arity: 1, $$has_trailing_comma_in_args: true});
+    $send(self, 'accept', [$$('String'), /.+/m], function $OptionParser$75(s, $a){var $post_args, $rest_arg;
+
+      
+      
+      if (s == null) s = nil;;
+      
+      $post_args = Opal.slice.call(arguments, 1);
+      
+      $rest_arg = $post_args;;
+      return s;}, -2);
+    decimal = "\\d+(?:_\\d+)*";
+    binary = "b[01]+(?:_[01]+)*";
+    hex = "x[\\da-f]+(?:_[\\da-f]+)*";
+    octal = "0(?:[0-7]+(?:_[0-7]+)*|" + (binary) + "|" + (hex) + ")?";
+    integer = "" + (octal) + "|" + (decimal);
+    $send(self, 'accept', [$$('Integer'), $regexp(["\\A[-+]?(?:", integer, ")\\z"], 'i')], function $OptionParser$76(s){var self = $OptionParser$76.$$s == null ? this : $OptionParser$76.$$s;
+
+      
+      
+      if (s == null) s = nil;;
+      if ($truthy(s)) {
+        
+        try {
+          return self.$Integer(s)
+        } catch ($err) {
+          if (Opal.rescue($err, [$$('ArgumentError')])) {
+            try {
+              return self.$raise($$$($$('OptionParser'), 'InvalidArgument'), s)
+            } finally { Opal.pop_exception(); }
+          } else { throw $err; }
+        };
+      } else {
+        return nil
+      };}, {$$arity: 1, $$s: self, $$has_trailing_comma_in_args: true});
+    float$ = "(?:" + (decimal) + "(?=(.)?)(?:\\.(?:" + (decimal) + ")?)?|\\." + (decimal) + ")(?:E[-+]?" + (decimal) + ")?";
+    floatpat = $regexp(["\\A[-+]?", float$, "\\z"], 'i');
+    $send(self, 'accept', [$$('Float'), floatpat], function $OptionParser$77(s){
+      
+      
+      if (s == null) s = nil;;
+      if ($truthy(s)) {
+        return s.$to_f()
+      } else {
+        return nil
+      };}, {$$arity: 1, $$has_trailing_comma_in_args: true});
+    real = "[-+]?(?:" + (octal) + "|" + (float$) + ")";
+    $send(self, 'accept', [$$('Numeric'), $regexp(["\\A(", real, ")(?:/(", real, "))?\\z"], 'i')], function $OptionParser$78(s, d, f, n){var self = $OptionParser$78.$$s == null ? this : $OptionParser$78.$$s;
+
+      
+      
+      if (s == null) s = nil;;
+      
+      if (d == null) d = nil;;
+      
+      if (f == null) f = nil;;
+      
+      if (n == null) n = nil;;
+      if ($truthy(n)) {
+        return self.$Rational(d, n)
+      } else if ($truthy(f)) {
+        return self.$Float(s)
+      } else {
+        return self.$Integer(s)
+      };}, {$$arity: 4, $$s: self, $$has_trailing_comma_in_args: true});
+    $const_set($nesting[0], 'DecimalInteger', $regexp(["\\A[-+]?", decimal, "\\z"], 'i'));
+    $send(self, 'accept', [$$('DecimalInteger'), $$('DecimalInteger')], function $OptionParser$79(s){var self = $OptionParser$79.$$s == null ? this : $OptionParser$79.$$s;
+
+      
+      
+      if (s == null) s = nil;;
+      if ($truthy(s)) {
+        
+        try {
+          return self.$Integer(s, 10)
+        } catch ($err) {
+          if (Opal.rescue($err, [$$('ArgumentError')])) {
+            try {
+              return self.$raise($$$($$('OptionParser'), 'InvalidArgument'), s)
+            } finally { Opal.pop_exception(); }
+          } else { throw $err; }
+        };
+      } else {
+        return nil
+      };}, {$$arity: 1, $$s: self, $$has_trailing_comma_in_args: true});
+    $const_set($nesting[0], 'OctalInteger', $regexp(["\\A[-+]?(?:[0-7]+(?:_[0-7]+)*|0(?:", binary, "|", hex, "))\\z"], 'i'));
+    $send(self, 'accept', [$$('OctalInteger'), $$('OctalInteger')], function $OptionParser$80(s){var self = $OptionParser$80.$$s == null ? this : $OptionParser$80.$$s;
+
+      
+      
+      if (s == null) s = nil;;
+      if ($truthy(s)) {
+        
+        try {
+          return self.$Integer(s, 8)
+        } catch ($err) {
+          if (Opal.rescue($err, [$$('ArgumentError')])) {
+            try {
+              return self.$raise($$$($$('OptionParser'), 'InvalidArgument'), s)
+            } finally { Opal.pop_exception(); }
+          } else { throw $err; }
+        };
+      } else {
+        return nil
+      };}, {$$arity: 1, $$s: self, $$has_trailing_comma_in_args: true});
+    $const_set($nesting[0], 'DecimalNumeric', floatpat);
+    $send(self, 'accept', [$$('DecimalNumeric'), floatpat], function $OptionParser$81(s, f){var self = $OptionParser$81.$$s == null ? this : $OptionParser$81.$$s;
+
+      
+      
+      if (s == null) s = nil;;
+      
+      if (f == null) f = nil;;
+      if ($truthy(s)) {
+        
+        try {
+          if ($truthy(f)) {
+            return self.$Float(s)
+          } else {
+            return self.$Integer(s)
+          }
+        } catch ($err) {
+          if (Opal.rescue($err, [$$('ArgumentError')])) {
+            try {
+              return self.$raise($$$($$('OptionParser'), 'InvalidArgument'), s)
+            } finally { Opal.pop_exception(); }
+          } else { throw $err; }
+        };
+      } else {
+        return nil
+      };}, {$$arity: 2, $$s: self});
+    yesno = $$('CompletingHash').$new();
+    $send(["-", "no", "false"], 'each', [], function $OptionParser$82(el){
+      
+      
+      if (el == null) el = nil;;
+      $writer = [el, false];
+      $send(yesno, '[]=', $to_a($writer));
+      return $writer[$rb_minus($writer["length"], 1)];}, 1);
+    $send(["+", "yes", "true"], 'each', [], function $OptionParser$83(el){
+      
+      
+      if (el == null) el = nil;;
+      $writer = [el, true];
+      $send(yesno, '[]=', $to_a($writer));
+      return $writer[$rb_minus($writer["length"], 1)];}, 1);
+    
+    $writer = ["nil", false];
+    $send(yesno, '[]=', $to_a($writer));
+    $writer[$rb_minus($writer["length"], 1)];;
+    $send(self, 'accept', [$$('TrueClass'), yesno], function $OptionParser$84(arg, val){var $ret_or_2 = nil;
+
+      
+      
+      if (arg == null) arg = nil;;
+      
+      if (val == null) val = nil;;
+      if ($truthy(($ret_or_2 = val['$nil?']()))) {
+        return $ret_or_2
+      } else {
+        return val
+      };}, 2);
+    $send(self, 'accept', [$$('FalseClass'), yesno], function $OptionParser$85(arg, val){var $ret_or_2 = nil;
+
+      
+      
+      if (arg == null) arg = nil;;
+      
+      if (val == null) val = nil;;
+      if ($truthy(($ret_or_2 = val['$nil?']()['$!']()))) {
+        return val
+      } else {
+        return $ret_or_2
+      };}, 2);
+    $send(self, 'accept', [$$('Array')], function $OptionParser$86(s){
+      
+      
+      if (s == null) s = nil;;
+      if ($truthy(s)) {
+        s = $send(s.$split(","), 'collect', [], function $$87(ss){
+          
+          
+          if (ss == null) ss = nil;;
+          if ($truthy(ss['$empty?']())) {
+            return nil
+          } else {
+            return ss
+          };}, 1)
+      };
+      return s;}, {$$arity: 1, $$has_trailing_comma_in_args: true});
+    $send(self, 'accept', [$$('Regexp'), /^\/((?:\\.|[^\\])*)\/([[:alpha:]]+)?$|.*/], function $OptionParser$88(all, s, o){var f = nil, k = nil, $ret_or_2 = nil;
+
+      
+      
+      if (all == null) all = nil;;
+      
+      if (s == null) s = nil;;
+      
+      if (o == null) o = nil;;
+      f = 0;
+      if ($truthy(o)) {
+        
+        if ($truthy(/i/['$=~'](o))) {
+          f = f['$|']($$$($$('Regexp'), 'IGNORECASE'))
+        };
+        if ($truthy(/m/['$=~'](o))) {
+          f = f['$|']($$$($$('Regexp'), 'MULTILINE'))
+        };
+        if ($truthy(/x/['$=~'](o))) {
+          f = f['$|']($$$($$('Regexp'), 'EXTENDED'))
+        };
+        k = o.$delete("imx");
+        if ($truthy(k['$empty?']())) {
+          k = nil
+        };
+      };
+      return $$('Regexp').$new(($truthy(($ret_or_2 = s)) ? ($ret_or_2) : (all)), f, k);}, 3);
+    (function($base, $super, $parent_nesting) {
+      var self = $klass($base, $super, 'ParseError');
+
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
+
+      $proto.args = $proto.reason = $proto.arg0 = nil;
+      
+      $const_set($nesting[0], 'Reason', "parse error");
+      
+      $def(self, '$initialize', function $$initialize($a, $b) {
+        var $post_args, $kwargs, args, additional, $c, $d, self = this;
+
+        
+        
+        $post_args = Opal.slice.call(arguments);
+        
+        $kwargs = Opal.extract_kwargs($post_args);
+        
+        if ($kwargs == null) {
+          $kwargs = $hash2([], {});
+        } else if (!$kwargs.$$is_hash) {
+          throw Opal.ArgumentError.$new('expected kwargs');
+        };
+        
+        args = $post_args;;
+        
+        additional = $kwargs.$$smap["additional"];
+        if (additional == null) additional = nil;
+        self.additional = additional;
+        $d = args, $c = $to_ary($d), (self.arg0 = ($c[0] == null ? nil : $c[0])), $d;
+        self.args = args;
+        return (self.reason = nil);
+      }, -1);
+      self.$attr_reader("args");
+      self.$attr_writer("reason");
+      self.$attr_accessor("additional");
+      
+      $def(self, '$recover', function $$recover(argv) {
+        var self = this, $writer = nil;
+
+        
+        
+        $writer = [0, 0, self.args];
+        $send(argv, '[]=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
+        return argv;
+      }, 1);
+      $defs(self, '$filter_backtrace', function $$filter_backtrace(array) {
+                if ($gvars.DEBUG == null) $gvars.DEBUG = nil;
+
+        
+        if (!$truthy($gvars.DEBUG)) {
+          $send(array, 'delete_if', [], $regexp(["\\A", $$('Regexp').$quote("./optparse.rb"), ":"]).$method("=~").$to_proc())
+        };
+        return array;
+      }, 1);
+      
+      $def(self, '$set_backtrace', function $$set_backtrace(array) {
+        var $yield = $$set_backtrace.$$p || nil, self = this;
+
+        delete $$set_backtrace.$$p;
+        return $send2(self, $find_super(self, 'set_backtrace', $$set_backtrace, false, true), 'set_backtrace', [self.$class().$filter_backtrace(array)], null)
+      }, 1);
+      
+      $def(self, '$set_option', function $$set_option(opt, eq) {
+        var self = this, $writer = nil;
+
+        
+        if ($truthy(eq)) {
+          
+          $writer = [0, opt];
+          $send(self.args, '[]=', $to_a($writer));
+          $writer[$rb_minus($writer["length"], 1)];
+        } else {
+          self.args.$unshift(opt)
+        };
+        return self;
+      }, 2);
+      
+      $def(self, '$reason', function $$reason() {
+        var self = this, $ret_or_2 = nil;
+
+        if ($truthy(($ret_or_2 = self.reason))) {
+          return $ret_or_2
+        } else {
+          return $$$(self.$class(), 'Reason')
+        }
+      }, 0);
+      
+      $def(self, '$inspect', function $$inspect() {
+        var self = this;
+
+        return "#<" + (self.$class()) + ": " + (self.$args().$join(" ")) + ">"
+      }, 0);
+      
+      $def(self, '$message', function $$message() {
+        var self = this;
+
+        return "" + (self.$reason()) + ": " + (self.$args().$join(" ")) + (($truthy(self.$additional()) ? (self.$additional()['$[]'](self.arg0)) : nil))
+      }, 0);
+      return $alias(self, "to_s", "message");
+    })($nesting[0], $$('RuntimeError'), $nesting);
+    (function($base, $super) {
+      var self = $klass($base, $super, 'AmbiguousOption');
+
+      
+      return self.$const_set("Reason", "ambiguous option")
+    })($nesting[0], $$('ParseError'));
+    (function($base, $super) {
+      var self = $klass($base, $super, 'NeedlessArgument');
+
+      
+      return self.$const_set("Reason", "needless argument")
+    })($nesting[0], $$('ParseError'));
+    (function($base, $super) {
+      var self = $klass($base, $super, 'MissingArgument');
+
+      
+      return self.$const_set("Reason", "missing argument")
+    })($nesting[0], $$('ParseError'));
+    (function($base, $super) {
+      var self = $klass($base, $super, 'InvalidOption');
+
+      
+      return self.$const_set("Reason", "invalid option")
+    })($nesting[0], $$('ParseError'));
+    (function($base, $super) {
+      var self = $klass($base, $super, 'InvalidArgument');
+
+      
+      return self.$const_set("Reason", "invalid argument")
+    })($nesting[0], $$('ParseError'));
+    (function($base, $super) {
+      var self = $klass($base, $super, 'AmbiguousArgument');
+
+      
+      return self.$const_set("Reason", "ambiguous argument")
+    })($nesting[0], $$('InvalidArgument'));
+    (function($base, $parent_nesting) {
+      var self = $module($base, 'Arguable');
+
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+      
+      
+      $def(self, '$options=', function $Arguable_options$eq$89(opt) {
+        var self = this;
+
+        if ($truthy((self.optparse = opt))) {
+          return nil
+        } else {
+          return (function(self, $parent_nesting) {
+            
+            
+            self.$undef_method("options");
+            return self.$undef_method("options=");
+          })(Opal.get_singleton_class(self), $nesting)
+        }
+      }, 1);
+      
+      $def(self, '$options', function $$options() {
+        var $yield = $$options.$$p || nil, self = this, $ret_or_2 = nil, $writer = nil;
+        if (self.optparse == null) self.optparse = nil;
+        if ($gvars["!"] == null) $gvars["!"] = nil;
+
+        delete $$options.$$p;
+        
+        self.optparse = ($truthy(($ret_or_2 = self.optparse)) ? ($ret_or_2) : ($$('OptionParser').$new()));
+        
+        $writer = [self];
+        $send(self.optparse, 'default_argv=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
+        if ($truthy(($ret_or_2 = ($yield !== nil)))) {
+          $ret_or_2
+        } else {
+          
+          return self.optparse;
+        };
+        
+        try {
+          return Opal.yield1($yield, self.optparse);
+        } catch ($err) {
+          if (Opal.rescue($err, [$$('ParseError')])) {
+            try {
+              
+              self.optparse.$warn($gvars["!"]);
+              return nil;
+            } finally { Opal.pop_exception(); }
+          } else { throw $err; }
+        };;
+      }, 0);
+      
+      $def(self, '$order!', function $Arguable_order$excl$90() {
+        var blk = $Arguable_order$excl$90.$$p || nil, self = this;
+
+        delete $Arguable_order$excl$90.$$p;
+        
+        ;
+        return $send(self.$options(), 'order!', [self], blk.$to_proc());
+      }, 0);
+      
+      $def(self, '$permute!', function $Arguable_permute$excl$91() {
+        var self = this;
+
+        return self.$options()['$permute!'](self)
+      }, 0);
+      
+      $def(self, '$parse!', function $Arguable_parse$excl$92() {
+        var self = this;
+
+        return self.$options()['$parse!'](self)
+      }, 0);
+      
+      $def(self, '$getopts', function $$getopts($a) {
+        var $post_args, args, self = this;
+
+        
+        
+        $post_args = Opal.slice.call(arguments);
+        
+        args = $post_args;;
+        return $send(self.$options(), 'getopts', [self].concat($to_a(args)));
+      }, -1);
+      $defs(self, '$extend_object', function $$extend_object(obj) {
+        var $yield = $$extend_object.$$p || nil, self = this;
+
+        delete $$extend_object.$$p;
+        
+        $send2(self, $find_super(self, 'extend_object', $$extend_object, false, true), 'extend_object', [obj], $yield);
+        return $send(obj, 'instance_eval', [], function $$93(){var self = $$93.$$s == null ? this : $$93.$$s;
+
+          return (self.optparse = nil)}, {$$arity: 0, $$s: self});
+      }, 1);
+      return $def(self, '$initialize', function $$initialize($a) {
+        var $post_args, args, $yield = $$initialize.$$p || nil, self = this;
+
+        delete $$initialize.$$p;
+        
+        
+        $post_args = Opal.slice.call(arguments);
+        
+        args = $post_args;;
+        $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', $to_a(args), $yield);
+        return (self.optparse = nil);
+      }, -1);
+    })($nesting[0], $nesting);
+    return (function($base, $parent_nesting) {
+      var self = $module($base, 'Acceptables');
+
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+      
+      self.$const_set("DecimalInteger", $$$($$('OptionParser'), 'DecimalInteger'));
+      self.$const_set("OctalInteger", $$$($$('OptionParser'), 'OctalInteger'));
+      return self.$const_set("DecimalNumeric", $$$($$('OptionParser'), 'DecimalNumeric'));
+    })($nesting[0], $nesting);
+  })($nesting[0], null, $nesting);
+  $$('ARGV').$extend($$$($$('OptionParser'), 'Arguable'));
+  return $const_set($nesting[0], 'OptParse', $$('OptionParser'));
+};
diff --git a/opal/master/optparse.min.js b/opal/master/optparse.min.js
new file mode 100644
index 00000000..91e1a49e
--- /dev/null
+++ b/opal/master/optparse.min.js
@@ -0,0 +1 @@
+Opal.modules["optparse/version"]=function(Opal){var $nesting=[],$$=Opal.$r($nesting),nil=Opal.nil,$send=Opal.send,$eqeq=Opal.eqeq,$Object=Opal.Object,$eqeqeq=Opal.eqeqeq,$truthy=Opal.truthy,$def=Opal.def,$regexp=Opal.regexp,$neqeq=Opal.neqeq;return Opal.add_stubs("program_name,options,proc,to_s,==,===,join,<<,find,const_defined?,const_get,puts,[],size,search_const,call,intern,each,inject,split,raise,grep,constants,shift,!="),function(self,$parent_nesting){var $nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return $def(self,"$show_version",(function($a){var pkgs,self=this,progname=nil,result=nil,show=nil;return pkgs=Opal.slice.call(arguments),progname=$$("ARGV").$options().$program_name(),result=!1,show=$send(self,"proc",[],(function $$1(klass,cname,version){var self=null==$$1.$$s?this:$$1.$$s,str=nil;return null==klass&&(klass=nil),null==cname&&(cname=nil),null==version&&(version=nil),str=progname.$to_s(),$eqeq(klass,$Object)&&$eqeq(cname,"VERSION")||($eqeqeq($$("Array"),version)&&(version=version.$join(".")),$eqeq(klass,$$("Object"))||str["$<<"](": "+klass),str["$<<"](" version "+version)),$send(["Release","RELEASE"],"find",[],(function(rel){return null==rel&&(rel=nil),$truthy(klass["$const_defined?"](rel))?str["$<<"](" ("+klass.$const_get(rel)+")"):nil}),1),self.$puts(str),result=!0}),{$$arity:3,$$s:self}),$eqeq(pkgs.$size(),1)&&$eqeq(pkgs["$[]"](0),"all")?$send(self,"search_const",[$Object,/^V(?:ERSION|ersion)$/],(function(klass,cname,version){return null==klass&&(klass=nil),null==cname&&(cname=nil),null==version&&(version=nil),$eqeq(cname["$[]"](1),"e")&&$truthy(klass["$const_defined?"]("Version"))?nil:show.$call(klass,cname.$intern(),version)}),3):$send(pkgs,"each",[],(function(pkg){var v=nil,n=nil;null==pkg&&(pkg=nil);try{return pkg=$send(pkg.$split(/::|\//),"inject",[$Object],(function(m,c){return null==m&&(m=nil),null==c&&(c=nil),m.$const_get(c)}),2),v=$truthy(pkg["$const_defined?"]("Version"))?pkg.$const_get(n="Version"):$truthy(pkg["$const_defined?"]("VERSION"))?pkg.$const_get(n="VERSION"):(n=nil,"unknown"),show.$call(pkg,n,v)}catch($err){if(!Opal.rescue($err,[$$("NameError")]))throw $err;try{return nil}finally{Opal.pop_exception()}}}),1),result}),-1),$def(self,"$each_const",(function(path,base){return null==base&&(base=$Object),$send(path.$split(/::|\//),"inject",[base],(function $$6(klass,name){var self=null==$$6.$$s?this:$$6.$$s;return null==klass&&(klass=nil),null==name&&(name=nil),$eqeqeq($$("Module"),klass)||self.$raise($$("NameError"),path),$send(klass.$constants(),"grep",[$regexp([name],"i")],(function(c){return null==c&&(c=nil),$truthy(klass["$const_defined?"](c))?klass.$const_get(c):nil}),1)}),{$$arity:2,$$s:this})}),-2),$def(self,"$search_const",(function $$search_const(klass,name){var $yield=$$search_const.$$p||nil,klasses=nil;for(delete $$search_const.$$p,klasses=[klass];$truthy(klass=klasses.$shift());)$send(klass.$constants(),"each",[],(function(cname){var const$;return null==cname&&(cname=nil),$truthy(klass["$const_defined?"](cname))?(const$=klass.$const_get(cname),$eqeqeq(name,cname)&&Opal.yieldX($yield,[klass,cname,const$]),$eqeqeq($$("Module"),const$)&&$neqeq(const$,$Object)?klasses["$<<"](const$):nil):nil}),1)}),2)}(Opal.get_singleton_class($$("OptionParser")),$nesting)},Opal.modules.shellwords=function(Opal){var $nesting=[],nil=Opal.nil,$module=Opal.module,$rb_plus=Opal.rb_plus,$send=Opal.send,$to_ary=Opal.to_ary,$truthy=Opal.truthy,$def=Opal.def,$alias=Opal.alias,$klass=Opal.klass;return Opal.add_stubs("+,new,scan,raise,inspect,gsub,<<,module_function,to_s,empty?,dup,join,map,shellescape,split,escape"),function($base,$parent_nesting){var self=$module($base,"Shellwords"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);$def(self,"$shellsplit",(function(line){var words=nil,field=nil;return line=$rb_plus(line," "),words=[],field=$$("String").$new(),$send(line,"scan",[/\s*(?:([^\s\\\'\"]+)|'([^\']*)'|"((?:[^\"\\]|\\.)*)"|(\\.?)|(\S))(\r?\n?\Z|\s)?/m],(function $$1($mlhs_tmp1){var $a,word,sq,garbage,sep,$ret_or_1,$ret_or_2,self=null==$$1.$$s?this:$$1.$$s,dq=nil,esc=nil,$ret_or_3=nil;return null==$mlhs_tmp1&&($mlhs_tmp1=nil),word=null==($a=$to_ary($mlhs_tmp1))[0]?nil:$a[0],sq=null==$a[1]?nil:$a[1],dq=null==$a[2]?nil:$a[2],esc=null==$a[3]?nil:$a[3],garbage=null==$a[4]?nil:$a[4],sep=null==$a[5]?nil:$a[5],$truthy(garbage)&&self.$raise($$("ArgumentError"),"Unmatched quote: "+line.$inspect()),field=$rb_plus(field,$truthy($ret_or_1=$truthy($ret_or_2=$truthy($ret_or_3=word)?$ret_or_3:sq)?$ret_or_2:$truthy($ret_or_3=dq)?dq.$gsub(/\\([$`"\\\n])/,"\\1"):$ret_or_3)?$ret_or_1:esc.$gsub(/\\(.)/,"\\1")),$truthy(sep)?(words["$<<"](field),field=$$("String").$new()):nil}),{$$arity:1,$$s:this,$$has_top_level_mlhs_arg:!0}),words}),1),$alias(self,"shellwords","shellsplit"),self.$module_function("shellsplit","shellwords"),function(self,$parent_nesting){$alias(self,"split","shellsplit")}(Opal.get_singleton_class(self)),$def(self,"$shellescape",(function(str){return str=str.$to_s(),$truthy(str["$empty?"]())?"''".$dup():str=(str=(str=str.$dup()).$gsub(/[^A-Za-z0-9_\-.,:+\/@\n]/,"\\\\\\&")).$gsub(/\n/,"'\n'")}),1),self.$module_function("shellescape"),function(self,$parent_nesting){$alias(self,"escape","shellescape")}(Opal.get_singleton_class(self)),$def(self,"$shelljoin",(function(array){return $send(array,"map",[],(function $$2(arg){return null==arg&&(arg=nil),(null==$$2.$$s?this:$$2.$$s).$shellescape(arg)}),{$$arity:1,$$s:this}).$join(" ")}),1),self.$module_function("shelljoin"),function(self,$parent_nesting){$alias(self,"join","shelljoin")}(Opal.get_singleton_class(self))}($nesting[0],$nesting),function($base,$super,$parent_nesting){var self=$klass($base,null,"String"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);$def(self,"$shellsplit",(function(){return $$("Shellwords").$split(this)}),0),$def(self,"$shellescape",(function(){return $$("Shellwords").$escape(this)}),0)}($nesting[0],0,$nesting),function($base,$super,$parent_nesting){var self=$klass($base,null,"Array"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return $def(self,"$shelljoin",(function(){return $$("Shellwords").$join(this)}),0)}($nesting[0],0,$nesting)},Opal.modules.optparse=function(Opal){var $nesting=[],$$=Opal.$r($nesting),nil=Opal.nil,$$$=Opal.$$$,$klass=Opal.klass,$const_set=Opal.const_set,$module=Opal.module,$rb_plus=Opal.rb_plus,$defs=Opal.defs,$truthy=Opal.truthy,$send=Opal.send,$eqeqeq=Opal.eqeqeq,$def=Opal.def,$eqeq=Opal.eqeq,$to_ary=Opal.to_ary,$rb_gt=Opal.rb_gt,$to_a=Opal.to_a,$rb_ge=Opal.rb_ge,$hash2=Opal.hash2,$rb_minus=Opal.rb_minus,$rb_lt=Opal.rb_lt,$rb_times=Opal.rb_times,$not=Opal.not,$slice=Opal.slice,$gvars=Opal.gvars,$alias=Opal.alias,$send2=Opal.send2,$find_super=Opal.find_super,$rb_le=Opal.rb_le,$neqeq=Opal.neqeq,$lambda=Opal.lambda,$regexp=Opal.regexp;return Opal.add_stubs("freeze,new,+,gsub,quote,regexp,call,===,id2name,empty?,<<,candidate,to_proc,method,public,sort_by,size,==,[],>,shift,each,rindex,throw,include,attr_reader,>=,incompatible_argument_styles,raise,filter_backtrace,caller,pattern,match,to_a,length,private,conv,proc,block,-,fetch,[]=,join,dup,desc,arg,<,+@,*,sub,to_i,max,collect,!,ljust,to_s,=~,first,long,short,last_match,conv_arg,parse_arg,respond_to?,delete,update,invert,delete_if,unshift,push,__send__,complete,keys,list,reverse_each,summarize,concat,reverse,each_line,add_banner,compsys,catch,basename,visit,puts,help,exit,require,show_version,split,abort,program_name,ver,instance_eval,nonzero?,inc,class,add_officious,base,terminate,accept,top,reject,attr_writer,attr_accessor,version,release,pop,index,banner,<=,search,notwice,!=,any?,guess,tr,downcase,append,make_switch,define,prepend,define_head,define_tail,order!,default_argv,to_sym,parse_in_order,include?,require_exact,set_option,parse,switch_name,delete_prefix,match_nonswitch?,permute!,parse!,scan,compact,getopts,curry,select!,is_a?,message_for,formatter,&,correct,map,map!,load,expand_path,readlines,upcase,shellwords,nil?,Integer,to_f,Rational,Float,|,args,reason,additional,const_set,undef_method,default_argv=,warn,options,extend"),function($base,$super,$parent_nesting){var decimal,hex,octal,float$,floatpat,real,yesno,self=$klass($base,null,"OptionParser"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$writer=nil,$proto=self.$$prototype;$proto.banner=$proto.program_name=$proto.version=$proto.release=$proto.stack=$proto.summary_width=$proto.summary_indent=nil,$const_set($$("OptionParser"),"Version","0.1.1"),$const_set($nesting[0],"NoArgument",[$const_set($nesting[0],"NO_ARGUMENT","NONE"),nil].$freeze()),$const_set($nesting[0],"RequiredArgument",[$const_set($nesting[0],"REQUIRED_ARGUMENT","REQUIRED"),!0].$freeze()),$const_set($nesting[0],"OptionalArgument",[$const_set($nesting[0],"OPTIONAL_ARGUMENT","OPTIONAL"),!1].$freeze()),function($base,$parent_nesting){var self=$module($base,"Completion"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);$defs(self,"$regexp",(function(key,icase){return $$("Regexp").$new($rb_plus("\\A",$$("Regexp").$quote(key).$gsub(/\w+\b/,"\\&\\w*")),icase)}),2),$defs(self,"$candidate",(function $$candidate(key,icase,pat){var block=$$candidate.$$p||nil,$ret_or_1=nil,candidates=nil;return delete $$candidate.$$p,null==icase&&(icase=!1),null==pat&&(pat=nil),pat=$truthy($ret_or_1=pat)?$ret_or_1:$$("Completion").$regexp(key,icase),candidates=[],$send(block,"call",[],(function(k,$a){var v,$b,$c,$d,$e,kn=nil;return null==k&&(k=nil),v=Opal.slice.call(arguments,1),$truthy($ret_or_1=$eqeqeq($$("Regexp"),k)?(kn="",k["$==="](key)):(kn=$truthy(($b=k)&&($c=$b)&&($d=$c)&&(($e=$d.$id2name)&&!$e.$$stub||$d["$respond_to_missing?"]("id2name"))?"method":nil)?k.$id2name():k,pat["$==="](kn)))?($truthy(v["$empty?"]())&&v["$<<"](k),candidates["$<<"]([k,v,kn])):nil}),-2),candidates}),-2),$def(self,"$candidate",(function(key,icase,pat){return null==icase&&(icase=!1),null==pat&&(pat=nil),$send($$("Completion"),"candidate",[key,icase,pat],this.$method("each").$to_proc())}),-2),self.$public(),$def(self,"$complete",(function $$complete(key,icase,pat){var $a,$b,$yield=$$complete.$$p||nil,candidates=nil,canon=nil,sw=nil,cn=nil;return delete $$complete.$$p,null==icase&&(icase=!1),null==pat&&(pat=nil),candidates=$send($send(this,"candidate",[key,icase,pat],this.$method("each").$to_proc()),"sort_by",[],(function(k,v,kn){return null==k&&(k=nil),null==v&&(v=nil),null==kn&&(kn=nil),kn.$size()}),3),$eqeq(candidates.$size(),1)?($b=candidates["$[]"](0),$a=$to_ary($b),canon=null==$a[0]?nil:$a[0],sw=null==$a[1]?nil:$a[1]):$truthy($rb_gt(candidates.$size(),1))&&($b=candidates.$shift(),$a=$to_ary($b),canon=null==$a[0]?nil:$a[0],sw=null==$a[1]?nil:$a[1],cn=null==$a[2]?nil:$a[2],$send(candidates,"each",[],(function $$3(k,v,kn){var $c,self=null==$$3.$$s?this:$$3.$$s;if(null==k&&(k=nil),null==v&&(v=nil),null==kn&&(kn=nil),$eqeq(sw,v))return nil;if($eqeqeq($$("String"),cn)&&$eqeqeq($$("String"),kn)){if($truthy(cn.$rindex(kn,0)))return canon=($c=[k,v,kn])[0],sw=$c[1],cn=$c[2],nil;if($truthy(kn.$rindex(cn,0)))return nil}return self.$throw("ambiguous",key)}),{$$arity:3,$$s:this})),$truthy(canon)?$truthy($yield!==nil)?Opal.yieldX($yield,[key].concat($to_a(sw))):[key].concat($to_a(sw)):nil}),-2),$def(self,"$convert",(function($a,$b,$c){var $post_args,opt,val;return($post_args=Opal.slice.call(arguments)).length>0&&(opt=$post_args.shift()),null==opt&&(opt=nil),$post_args.length>0&&(val=$post_args.shift()),null==val&&(val=nil),$post_args,val}),-1)}($nesting[0],$nesting),function($base,$super,$parent_nesting){var self=$klass($base,$super,"OptionMap"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);self.$include($$("Completion"))}($nesting[0],$$("Hash"),$nesting),function($base,$super,$parent_nesting){var self=$klass($base,null,"Switch"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;$proto.short=$proto.long=$proto.pattern=nil,self.$attr_reader("pattern","conv","short","long","arg","desc","block"),$defs(self,"$guess",(function(arg){var $ret_or_1=nil,t=nil;return t=$eqeqeq("",$ret_or_1=arg)?this:$eqeqeq(/^=?\[/,$ret_or_1)?$$$($$("Switch"),"OptionalArgument"):$eqeqeq(/^\s+\[/,$ret_or_1)?$$$($$("Switch"),"PlacedArgument"):$$$($$("Switch"),"RequiredArgument"),$truthy($ret_or_1=$rb_ge(this,t))||this.$incompatible_argument_styles(arg,t),t}),1),$defs(self,"$incompatible_argument_styles",(function(arg,t){return this.$raise($$("ArgumentError"),arg+": incompatible argument styles\n  "+this+", "+t,$$("ParseError").$filter_backtrace(this.$caller(2)))}),2),$defs(self,"$pattern",(function(){return $$("NilClass")}),0),$def(self,"$initialize",(function $$initialize(pattern,conv,short$,long$,arg,desc,block){var $a,$ret_or_1,_block=$$initialize.$$p||nil;return delete $$initialize.$$p,null==pattern&&(pattern=nil),null==conv&&(conv=nil),null==short$&&(short$=nil),null==long$&&(long$=nil),null==arg&&(arg=nil),null==desc&&(desc=$truthy(short$)||$truthy(long$)?[]:nil),null==block&&(block=nil),$eqeqeq($$("Array"),pattern)&&this.$raise(),$a=[pattern,conv,short$,long$,arg,desc,block=$truthy($ret_or_1=block)?$ret_or_1:_block],this.pattern=$a[0],this.conv=$a[1],this.short=$a[2],this.long=$a[3],this.arg=$a[4],this.desc=$a[5],this.block=$a[6],$a}),-1),$def(self,"$parse_arg",(function $$parse_arg(arg){var $yield=$$parse_arg.$$p||nil,m=nil,s=nil;if(delete $$parse_arg.$$p,!$truthy(this.$pattern()))return[nil,[arg]];if(!$truthy(m=this.$pattern().$match(arg)))return Opal.yieldX($yield,[$$("InvalidArgument"),arg]),[arg,[]];if($eqeqeq($$("String"),m))m=[s=m];else if(s=(m=m.$to_a())["$[]"](0),!$eqeqeq($$("String"),s))return[nil,m];return $truthy(arg.$rindex(s,0))||this.$raise($$("InvalidArgument"),arg),$eqeq(s.$length(),arg.$length())?[nil,m]:(Opal.yieldX($yield,[$$("InvalidArgument"),arg]),[arg["$[]"](Opal.Range.$new(s.$length(),-1,!1)),m])}),1),self.$private("parse_arg"),$def(self,"$conv_arg",(function(arg,val){return null==val&&(val=[]),val=$truthy(this.$conv())?$send(this.$conv(),"call",$to_a(val)):$send($send(this,"proc",[],(function(v){return null==v&&(v=nil),v}),1),"call",$to_a(val)),[arg,this.$block(),val]}),-2),self.$private("conv_arg"),$def(self,"$summarize",(function $$summarize(sdone,ldone,width,max,indent){var $a,$yield=$$summarize.$$p||nil,sopts=nil,lopts=nil,left=nil,right=nil,s=nil,l=nil,$ret_or_1=nil,$ret_or_2=nil,$writer=nil,mlen=nil,r=nil;if(delete 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diff --git a/opal/master/optparse.min.js.gz b/opal/master/optparse.min.js.gz
new file mode 100644
index 00000000..432f2264
Binary files /dev/null and b/opal/master/optparse.min.js.gz differ
diff --git a/opal/master/ostruct.js b/opal/master/ostruct.js
index 29818f89..4696a30f 100644
--- a/opal/master/ostruct.js
+++ b/opal/master/ostruct.js
@@ -1,186 +1,159 @@
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-Opal.modules["ostruct"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $hash2 = Opal.hash2, $truthy = Opal.truthy, $send = Opal.send, $range = Opal.range, $send2 = Opal.send2, $find_super = Opal.find_super, $alias = Opal.alias;
+Opal.modules["ostruct"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $klass = Opal.klass, $hash2 = Opal.hash2, $truthy = Opal.truthy, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $def = Opal.def, $rb_gt = Opal.rb_gt, $neqeq = Opal.neqeq, $range = Opal.range, $send2 = Opal.send2, $find_super = Opal.find_super, $rb_plus = Opal.rb_plus, $alias = Opal.alias;
 
-  Opal.add_stubs(['$each_pair', '$new_ostruct_member', '$[]=', '$-', '$[]', '$to_sym', '$>', '$length', '$raise', '$new', '$end_with?', '$!=', '$chomp', '$to_s', '$key?', '$enum_for', '$is_a?', '$==', '$instance_variable_get', '$===', '$eql?', '$dup', '$to_n', '$hash', '$attr_reader', '$__send__', '$singleton_class', '$delete', '$respond_to?', '$define_singleton_method', '$__id__', '$class', '$any?', '$+', '$join', '$map', '$inspect']);
+  Opal.add_stubs('each_pair,new_ostruct_member,[]=,-,[],to_sym,>,length,raise,new,end_with?,!=,chomp,to_s,key?,enum_for,is_a?,==,instance_variable_get,===,eql?,dup,to_n,hash,attr_reader,__send__,singleton_class,delete,respond_to?,define_singleton_method,__id__,class,any?,+,join,map,inspect');
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'OpenStruct');
 
-    var $nesting = [self].concat($parent_nesting), $OpenStruct_initialize$1, $OpenStruct_$$$3, $OpenStruct_$$$eq$4, $OpenStruct_method_missing$5, $OpenStruct_respond_to_missing$ques$6, $OpenStruct_each_pair$7, $OpenStruct_$eq_eq$9, $OpenStruct_$eq_eq_eq$10, $OpenStruct_eql$ques$11, $OpenStruct_to_h$12, $OpenStruct_to_n$13, $OpenStruct_hash$14, $OpenStruct_delete_field$15, $OpenStruct_new_ostruct_member$16, $OpenStruct_inspect$19;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-    self.$$prototype.table = nil;
+    $proto.table = nil;
     
     
-    Opal.def(self, '$initialize', $OpenStruct_initialize$1 = function $$initialize(hash) {
-      var $$2, self = this;
+    $def(self, '$initialize', function $$initialize(hash) {
+      var self = this;
 
       
       
-      if (hash == null) {
-        hash = nil;
-      };
+      if (hash == null) hash = nil;;
       self.table = $hash2([], {});
       if ($truthy(hash)) {
-        return $send(hash, 'each_pair', [], ($$2 = function(key, value){var self = $$2.$$s == null ? this : $$2.$$s, $writer = nil;
+        return $send(hash, 'each_pair', [], function $$1(key, value){var self = $$1.$$s == null ? this : $$1.$$s, $writer = nil;
           if (self.table == null) self.table = nil;
 
           
           
-          if (key == null) {
-            key = nil;
-          };
+          if (key == null) key = nil;;
           
-          if (value == null) {
-            value = nil;
-          };
+          if (value == null) value = nil;;
           $writer = [self.$new_ostruct_member(key), value];
-          $send(self.table, '[]=', Opal.to_a($writer));
-          return $writer[$rb_minus($writer["length"], 1)];}, $$2.$$s = self, $$2.$$arity = 2, $$2))
+          $send(self.table, '[]=', $to_a($writer));
+          return $writer[$rb_minus($writer["length"], 1)];}, {$$arity: 2, $$s: self})
       } else {
         return nil
       };
-    }, $OpenStruct_initialize$1.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$[]', $OpenStruct_$$$3 = function(name) {
+    $def(self, '$[]', function $OpenStruct_$$$2(name) {
       var self = this;
 
       return self.table['$[]'](name.$to_sym())
-    }, $OpenStruct_$$$3.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$[]=', $OpenStruct_$$$eq$4 = function(name, value) {
+    $def(self, '$[]=', function $OpenStruct_$$$eq$3(name, value) {
       var self = this, $writer = nil;
 
       
       $writer = [self.$new_ostruct_member(name), value];
-      $send(self.table, '[]=', Opal.to_a($writer));
+      $send(self.table, '[]=', $to_a($writer));
       return $writer[$rb_minus($writer["length"], 1)];
-    }, $OpenStruct_$$$eq$4.$$arity = 2);
+    }, 2);
     
-    Opal.def(self, '$method_missing', $OpenStruct_method_missing$5 = function $$method_missing(name, $a) {
+    $def(self, '$method_missing', function $$method_missing(name, $a) {
       var $post_args, args, self = this, $writer = nil;
 
       
       
-      $post_args = Opal.slice.call(arguments, 1, arguments.length);
+      $post_args = Opal.slice.call(arguments, 1);
       
       args = $post_args;;
       if ($truthy($rb_gt(args.$length(), 2))) {
-        self.$raise($$($nesting, 'NoMethodError').$new("" + "undefined method `" + (name) + "' for #<OpenStruct>", name))};
+        self.$raise($$('NoMethodError').$new("undefined method `" + (name) + "' for #<OpenStruct>", name))
+      };
       if ($truthy(name['$end_with?']("="))) {
         
-        if ($truthy(args.$length()['$!='](1))) {
-          self.$raise($$($nesting, 'ArgumentError'), "wrong number of arguments (0 for 1)")};
+        if ($neqeq(args.$length(), 1)) {
+          self.$raise($$('ArgumentError'), "wrong number of arguments (0 for 1)")
+        };
         
         $writer = [self.$new_ostruct_member(name['$[]']($range(0, -2, false))), args['$[]'](0)];
-        $send(self.table, '[]=', Opal.to_a($writer));
+        $send(self.table, '[]=', $to_a($writer));
         return $writer[$rb_minus($writer["length"], 1)];;
       } else {
         return self.table['$[]'](name.$to_sym())
       };
-    }, $OpenStruct_method_missing$5.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$respond_to_missing?', $OpenStruct_respond_to_missing$ques$6 = function(mid, include_private) {
-      var $a, $iter = $OpenStruct_respond_to_missing$ques$6.$$p, $yield = $iter || nil, self = this, mname = nil, $ret_or_1 = nil, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+    $def(self, '$respond_to_missing?', function $OpenStruct_respond_to_missing$ques$4(mid, include_private) {
+      var $a, $yield = $OpenStruct_respond_to_missing$ques$4.$$p || nil, self = this, mname = nil, $ret_or_1 = nil;
 
-      if ($iter) $OpenStruct_respond_to_missing$ques$6.$$p = null;
-      // Prepare super implicit arguments
-      for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-        $zuper[$zuper_i] = arguments[$zuper_i];
-      }
+      delete $OpenStruct_respond_to_missing$ques$4.$$p;
       
       
-      if (include_private == null) {
-        include_private = false;
-      };
+      if (include_private == null) include_private = false;;
       mname = mid.$to_s().$chomp("=").$to_sym();
       if ($truthy(($ret_or_1 = ($a = self.table, ($a === nil || $a == null) ? nil : $send($a, 'key?', [mname]))))) {
         return $ret_or_1
       } else {
-        return $send2(self, $find_super(self, 'respond_to_missing?', $OpenStruct_respond_to_missing$ques$6, false, true), 'respond_to_missing?', $zuper, $iter)
+        return $send2(self, $find_super(self, 'respond_to_missing?', $OpenStruct_respond_to_missing$ques$4, false, true), 'respond_to_missing?', [mid, include_private], $yield)
       };
-    }, $OpenStruct_respond_to_missing$ques$6.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$each_pair', $OpenStruct_each_pair$7 = function $$each_pair() {
-      var $$8, $iter = $OpenStruct_each_pair$7.$$p, $yield = $iter || nil, self = this;
+    $def(self, '$each_pair', function $$each_pair() {
+      var $yield = $$each_pair.$$p || nil, self = this;
 
-      if ($iter) $OpenStruct_each_pair$7.$$p = null;
+      delete $$each_pair.$$p;
       
-      if (($yield !== nil)) {
-      } else {
+      if (!($yield !== nil)) {
         return self.$enum_for("each_pair")
       };
-      return $send(self.table, 'each_pair', [], ($$8 = function(pair){var self = $$8.$$s == null ? this : $$8.$$s;
-
+      return $send(self.table, 'each_pair', [], function $$5(pair){
         
         
-        if (pair == null) {
-          pair = nil;
-        };
-        return Opal.yield1($yield, pair);;}, $$8.$$s = self, $$8.$$arity = 1, $$8));
-    }, $OpenStruct_each_pair$7.$$arity = 0);
+        if (pair == null) pair = nil;;
+        return Opal.yield1($yield, pair);;}, 1);
+    }, 0);
     
-    Opal.def(self, '$==', $OpenStruct_$eq_eq$9 = function(other) {
+    $def(self, '$==', function $OpenStruct_$eq_eq$6(other) {
       var self = this;
 
       
-      if ($truthy(other['$is_a?']($$($nesting, 'OpenStruct')))) {
-      } else {
+      if (!$truthy(other['$is_a?']($$('OpenStruct')))) {
         return false
       };
       return self.table['$=='](other.$instance_variable_get("@table"));
-    }, $OpenStruct_$eq_eq$9.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$===', $OpenStruct_$eq_eq_eq$10 = function(other) {
+    $def(self, '$===', function $OpenStruct_$eq_eq_eq$7(other) {
       var self = this;
 
       
-      if ($truthy(other['$is_a?']($$($nesting, 'OpenStruct')))) {
-      } else {
+      if (!$truthy(other['$is_a?']($$('OpenStruct')))) {
         return false
       };
       return self.table['$==='](other.$instance_variable_get("@table"));
-    }, $OpenStruct_$eq_eq_eq$10.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$eql?', $OpenStruct_eql$ques$11 = function(other) {
+    $def(self, '$eql?', function $OpenStruct_eql$ques$8(other) {
       var self = this;
 
       
-      if ($truthy(other['$is_a?']($$($nesting, 'OpenStruct')))) {
-      } else {
+      if (!$truthy(other['$is_a?']($$('OpenStruct')))) {
         return false
       };
       return self.table['$eql?'](other.$instance_variable_get("@table"));
-    }, $OpenStruct_eql$ques$11.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$to_h', $OpenStruct_to_h$12 = function $$to_h() {
+    $def(self, '$to_h', function $$to_h() {
       var self = this;
 
       return self.table.$dup()
-    }, $OpenStruct_to_h$12.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_n', $OpenStruct_to_n$13 = function $$to_n() {
+    $def(self, '$to_n', function $$to_n() {
       var self = this;
 
       return self.table.$to_n()
-    }, $OpenStruct_to_n$13.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$hash', $OpenStruct_hash$14 = function $$hash() {
+    $def(self, '$hash', function $$hash() {
       var self = this;
 
       return self.table.$hash()
-    }, $OpenStruct_hash$14.$$arity = 0);
+    }, 0);
     self.$attr_reader("table");
     
-    Opal.def(self, '$delete_field', $OpenStruct_delete_field$15 = function $$delete_field(name) {
+    $def(self, '$delete_field', function $$delete_field(name) {
       var self = this, sym = nil;
 
       
@@ -189,45 +162,42 @@ Opal.modules["ostruct"] = function(Opal) {
       try {
         self.$singleton_class().$__send__("remove_method", sym, "" + (sym) + "=")
       } catch ($err) {
-        if (Opal.rescue($err, [$$($nesting, 'NameError')])) {
+        if (Opal.rescue($err, [$$('NameError')])) {
           try {
             nil
           } finally { Opal.pop_exception(); }
         } else { throw $err; }
       };;
       return self.table.$delete(sym);
-    }, $OpenStruct_delete_field$15.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$new_ostruct_member', $OpenStruct_new_ostruct_member$16 = function $$new_ostruct_member(name) {
-      var $$17, $$18, self = this;
+    $def(self, '$new_ostruct_member', function $$new_ostruct_member(name) {
+      var self = this;
 
       
       name = name.$to_sym();
-      if ($truthy(self['$respond_to?'](name))) {
-      } else {
+      if (!$truthy(self['$respond_to?'](name))) {
         
-        $send(self, 'define_singleton_method', [name], ($$17 = function(){var self = $$17.$$s == null ? this : $$17.$$s;
+        $send(self, 'define_singleton_method', [name], function $$9(){var self = $$9.$$s == null ? this : $$9.$$s;
           if (self.table == null) self.table = nil;
 
-          return self.table['$[]'](name)}, $$17.$$s = self, $$17.$$arity = 0, $$17));
-        $send(self, 'define_singleton_method', ["" + (name) + "="], ($$18 = function(x){var self = $$18.$$s == null ? this : $$18.$$s, $writer = nil;
+          return self.table['$[]'](name)}, {$$arity: 0, $$s: self});
+        $send(self, 'define_singleton_method', ["" + (name) + "="], function $$10(x){var self = $$10.$$s == null ? this : $$10.$$s, $writer = nil;
           if (self.table == null) self.table = nil;
 
           
           
-          if (x == null) {
-            x = nil;
-          };
+          if (x == null) x = nil;;
           $writer = [name, x];
-          $send(self.table, '[]=', Opal.to_a($writer));
-          return $writer[$rb_minus($writer["length"], 1)];}, $$18.$$s = self, $$18.$$arity = 1, $$18));
+          $send(self.table, '[]=', $to_a($writer));
+          return $writer[$rb_minus($writer["length"], 1)];}, {$$arity: 1, $$s: self});
       };
       return name;
-    }, $OpenStruct_new_ostruct_member$16.$$arity = 1);
+    }, 1);
     var ostruct_ids;;
     
-    Opal.def(self, '$inspect', $OpenStruct_inspect$19 = function $$inspect() {
-      var $$20, self = this, result = nil;
+    $def(self, '$inspect', function $$inspect() {
+      var self = this, result = nil;
 
       
       
@@ -237,7 +207,7 @@ Opal.modules["ostruct"] = function(Opal) {
       
       return (function() { try {
       
-      result = "" + "#<" + (self.$class());
+      result = "#<" + (self.$class());
       
         if (top) {
           ostruct_ids = {};
@@ -248,19 +218,15 @@ Opal.modules["ostruct"] = function(Opal) {
         ostruct_ids[ostruct_id] = true;
       ;
       if ($truthy(self.table['$any?']())) {
-        result = $rb_plus(result, " ")};
-      result = $rb_plus(result, $send(self.$each_pair(), 'map', [], ($$20 = function(name, value){var self = $$20.$$s == null ? this : $$20.$$s;
-
+        result = $rb_plus(result, " ")
+      };
+      result = $rb_plus(result, $send(self.$each_pair(), 'map', [], function $$11(name, value){
         
         
-        if (name == null) {
-          name = nil;
-        };
+        if (name == null) name = nil;;
         
-        if (value == null) {
-          value = nil;
-        };
-        return "" + (name) + "=" + (value.$inspect());}, $$20.$$s = self, $$20.$$arity = 2, $$20)).$join(", "));
+        if (value == null) value = nil;;
+        return "" + (name) + "=" + (value.$inspect());}, 2).$join(", "));
       result = $rb_plus(result, ">");
       return result;
       } finally {
@@ -270,7 +236,7 @@ Opal.modules["ostruct"] = function(Opal) {
         }
       
       }; })();;
-    }, $OpenStruct_inspect$19.$$arity = 0);
+    }, 0);
     return $alias(self, "to_s", "inspect");
   })($nesting[0], null, $nesting)
 };
diff --git a/opal/master/ostruct.min.js b/opal/master/ostruct.min.js
index 7e73dcfa..b741ee43 100644
--- a/opal/master/ostruct.min.js
+++ b/opal/master/ostruct.min.js
@@ -1 +1 @@
-Opal.modules.ostruct=function(Opal){function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$klass=Opal.klass,$hash2=Opal.hash2,$truthy=Opal.truthy,$send=Opal.send,$range=Opal.range,$send2=Opal.send2,$find_super=Opal.find_super,$alias=Opal.alias;return Opal.add_stubs(["$each_pair","$new_ostruct_member","$[]=","$-","$[]","$to_sym","$>","$length","$raise","$new","$end_with?","$!=","$chomp","$to_s","$key?","$enum_for","$is_a?","$==","$instance_variable_get","$===","$eql?","$dup","$to_n","$hash","$attr_reader","$__send__","$singleton_class","$delete","$respond_to?","$define_singleton_method","$__id__","$class","$any?","$+","$join","$map","$inspect"]),function(self,$OpenStruct_inspect$19){var $OpenStruct_respond_to_missing$ques$6,$OpenStruct_each_pair$7,ostruct_ids,self=$klass(self,null,"OpenStruct"),$nesting=[self].concat($OpenStruct_inspect$19);return self.$$prototype.table=nil,Opal.def(self,"$initialize",$OpenStruct_inspect$19=function(hash){var $$2;return null==hash&&(hash=nil),this.table=$hash2([],{}),$truthy(hash)?$send(hash,"each_pair",[],(($$2=function(key,value){var $writer,self=null==$$2.$$s?this:$$2.$$s;return null==self.table&&(self.table=nil),null==key&&(key=nil),null==value&&(value=nil),$writer=[self.$new_ostruct_member(key),value],$send(self.table,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]}).$$s=this,$$2.$$arity=2,$$2)):nil},$OpenStruct_inspect$19.$$arity=-1),Opal.def(self,"$[]",$OpenStruct_inspect$19=function(name){return this.table["$[]"](name.$to_sym())},$OpenStruct_inspect$19.$$arity=1),Opal.def(self,"$[]=",$OpenStruct_inspect$19=function(name,value){var $writer=[this.$new_ostruct_member(name),value];return $send(this.table,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]},$OpenStruct_inspect$19.$$arity=2),Opal.def(self,"$method_missing",$OpenStruct_inspect$19=function(name,$a){var $writer,lhs,rhs,args=Opal.slice.call(arguments,1,arguments.length);return $truthy((lhs=args.$length(),rhs=2,"number"==typeof lhs&&"number"==typeof rhs?rhs<lhs:lhs["$>"](rhs)))&&this.$raise($$($nesting,"NoMethodError").$new("undefined method `"+name+"' for #<OpenStruct>",name)),$truthy(name["$end_with?"]("="))?($truthy(args.$length()["$!="](1))&&this.$raise($$($nesting,"ArgumentError"),"wrong number of arguments (0 for 1)"),$writer=[this.$new_ostruct_member(name["$[]"]($range(0,-2,!1))),args["$[]"](0)],$send(this.table,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]):this.table["$[]"](name.$to_sym())},$OpenStruct_inspect$19.$$arity=-2),Opal.def(self,"$respond_to_missing?",$OpenStruct_respond_to_missing$ques$6=function(mid,include_private){var $a,mname,$zuper_ii,$iter=$OpenStruct_respond_to_missing$ques$6.$$p,$ret_or_1=nil,$zuper=nil,$zuper_i=nil;for($iter&&($OpenStruct_respond_to_missing$ques$6.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return null==include_private&&(include_private=!1),mname=mid.$to_s().$chomp("=").$to_sym(),$truthy($ret_or_1=($a=this.table)===nil||null==$a?nil:$send($a,"key?",[mname]))?$ret_or_1:$send2(this,$find_super(this,"respond_to_missing?",$OpenStruct_respond_to_missing$ques$6,!1,!0),"respond_to_missing?",$zuper,$iter)},$OpenStruct_respond_to_missing$ques$6.$$arity=-2),Opal.def(self,"$each_pair",$OpenStruct_each_pair$7=function(){var $$8,$iter=$OpenStruct_each_pair$7.$$p,$yield=$iter||nil;return $iter&&($OpenStruct_each_pair$7.$$p=null),$yield===nil?this.$enum_for("each_pair"):$send(this.table,"each_pair",[],(($$8=function(pair){null==$$8.$$s||$$8.$$s;return null==pair&&(pair=nil),Opal.yield1($yield,pair)}).$$s=this,$$8.$$arity=1,$$8))},$OpenStruct_each_pair$7.$$arity=0),Opal.def(self,"$==",$OpenStruct_inspect$19=function(other){return!!$truthy(other["$is_a?"]($$($nesting,"OpenStruct")))&&this.table["$=="](other.$instance_variable_get("@table"))},$OpenStruct_inspect$19.$$arity=1),Opal.def(self,"$===",$OpenStruct_inspect$19=function(other){return!!$truthy(other["$is_a?"]($$($nesting,"OpenStruct")))&&this.table["$==="](other.$instance_variable_get("@table"))},$OpenStruct_inspect$19.$$arity=1),Opal.def(self,"$eql?",$OpenStruct_inspect$19=function(other){return!!$truthy(other["$is_a?"]($$($nesting,"OpenStruct")))&&this.table["$eql?"](other.$instance_variable_get("@table"))},$OpenStruct_inspect$19.$$arity=1),Opal.def(self,"$to_h",$OpenStruct_inspect$19=function(){return this.table.$dup()},$OpenStruct_inspect$19.$$arity=0),Opal.def(self,"$to_n",$OpenStruct_inspect$19=function(){return this.table.$to_n()},$OpenStruct_inspect$19.$$arity=0),Opal.def(self,"$hash",$OpenStruct_inspect$19=function(){return this.table.$hash()},$OpenStruct_inspect$19.$$arity=0),self.$attr_reader("table"),Opal.def(self,"$delete_field",$OpenStruct_inspect$19=function(name){var sym=name.$to_sym();try{this.$singleton_class().$__send__("remove_method",sym,sym+"=")}catch($err){if(!Opal.rescue($err,[$$($nesting,"NameError")]))throw $err;Opal.pop_exception()}return this.table.$delete(sym)},$OpenStruct_inspect$19.$$arity=1),Opal.def(self,"$new_ostruct_member",$OpenStruct_inspect$19=function(name){var $$17,$$18;return name=name.$to_sym(),$truthy(this["$respond_to?"](name))||($send(this,"define_singleton_method",[name],(($$17=function(){var self=null==$$17.$$s?this:$$17.$$s;return null==self.table&&(self.table=nil),self.table["$[]"](name)}).$$s=this,$$17.$$arity=0,$$17)),$send(this,"define_singleton_method",[name+"="],(($$18=function(x){var $writer,self=null==$$18.$$s?this:$$18.$$s;return null==self.table&&(self.table=nil),null==x&&(x=nil),$writer=[name,x],$send(self.table,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]}).$$s=this,$$18.$$arity=1,$$18))),name},$OpenStruct_inspect$19.$$arity=1),Opal.def(self,"$inspect",$OpenStruct_inspect$19=function(){var $$20,self=this,result=nil,top=void 0===ostruct_ids,ostruct_id=self.$__id__();return function(){try{return(result="#<"+self.$class(),top&&(ostruct_ids={}),ostruct_ids.hasOwnProperty(ostruct_id))?result+" ...>":(ostruct_ids[ostruct_id]=!0,$truthy(self.table["$any?"]())&&(result=$rb_plus(result," ")),result=$rb_plus(result,$send(self.$each_pair(),"map",[],(($$20=function(name,value){null==$$20.$$s||$$20.$$s;return null==name&&(name=nil),null==value&&(value=nil),name+"="+value.$inspect()}).$$s=self,$$20.$$arity=2,$$20)).$join(", ")),result=$rb_plus(result,">"))}finally{top&&(ostruct_ids=void 0)}}()},$OpenStruct_inspect$19.$$arity=0),$alias(self,"to_s","inspect")}($nesting[0],$nesting)};
+Opal.modules.ostruct=function(Opal){var $nesting=[],nil=Opal.nil,$klass=Opal.klass,$hash2=Opal.hash2,$truthy=Opal.truthy,$send=Opal.send,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$def=Opal.def,$rb_gt=Opal.rb_gt,$neqeq=Opal.neqeq,$range=Opal.range,$send2=Opal.send2,$find_super=Opal.find_super,$rb_plus=Opal.rb_plus,$alias=Opal.alias;return Opal.add_stubs("each_pair,new_ostruct_member,[]=,-,[],to_sym,>,length,raise,new,end_with?,!=,chomp,to_s,key?,enum_for,is_a?,==,instance_variable_get,===,eql?,dup,to_n,hash,attr_reader,__send__,singleton_class,delete,respond_to?,define_singleton_method,__id__,class,any?,+,join,map,inspect"),function($base,$super,$parent_nesting){var ostruct_ids,self=$klass($base,null,"OpenStruct"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return self.$$prototype.table=nil,$def(self,"$initialize",(function(hash){return null==hash&&(hash=nil),this.table=$hash2([],{}),$truthy(hash)?$send(hash,"each_pair",[],(function $$1(key,value){var $writer,self=null==$$1.$$s?this:$$1.$$s;return null==self.table&&(self.table=nil),null==key&&(key=nil),null==value&&(value=nil),$writer=[self.$new_ostruct_member(key),value],$send(self.table,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]}),{$$arity:2,$$s:this}):nil}),-1),$def(self,"$[]",(function(name){return this.table["$[]"](name.$to_sym())}),1),$def(self,"$[]=",(function(name,value){var $writer;return $writer=[this.$new_ostruct_member(name),value],$send(this.table,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]}),2),$def(self,"$method_missing",(function(name,$a){var $post_args,args,self=this,$writer=nil;return $post_args=Opal.slice.call(arguments,1),$truthy($rb_gt((args=$post_args).$length(),2))&&self.$raise($$("NoMethodError").$new("undefined method `"+name+"' for #<OpenStruct>",name)),$truthy(name["$end_with?"]("="))?($neqeq(args.$length(),1)&&self.$raise($$("ArgumentError"),"wrong number of arguments (0 for 1)"),$writer=[self.$new_ostruct_member(name["$[]"]($range(0,-2,!1))),args["$[]"](0)],$send(self.table,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]):self.table["$[]"](name.$to_sym())}),-2),$def(self,"$respond_to_missing?",(function $OpenStruct_respond_to_missing$ques$4(mid,include_private){var $a,mname,$yield=$OpenStruct_respond_to_missing$ques$4.$$p||nil,$ret_or_1=nil;return delete $OpenStruct_respond_to_missing$ques$4.$$p,null==include_private&&(include_private=!1),mname=mid.$to_s().$chomp("=").$to_sym(),$truthy($ret_or_1=($a=this.table)===nil||null==$a?nil:$send($a,"key?",[mname]))?$ret_or_1:$send2(this,$find_super(this,"respond_to_missing?",$OpenStruct_respond_to_missing$ques$4,!1,!0),"respond_to_missing?",[mid,include_private],$yield)}),-2),$def(self,"$each_pair",(function $$each_pair(){var $yield=$$each_pair.$$p||nil;return delete $$each_pair.$$p,$yield===nil?this.$enum_for("each_pair"):$send(this.table,"each_pair",[],(function(pair){return null==pair&&(pair=nil),Opal.yield1($yield,pair)}),1)}),0),$def(self,"$==",(function(other){return!!$truthy(other["$is_a?"]($$("OpenStruct")))&&this.table["$=="](other.$instance_variable_get("@table"))}),1),$def(self,"$===",(function(other){return!!$truthy(other["$is_a?"]($$("OpenStruct")))&&this.table["$==="](other.$instance_variable_get("@table"))}),1),$def(self,"$eql?",(function(other){return!!$truthy(other["$is_a?"]($$("OpenStruct")))&&this.table["$eql?"](other.$instance_variable_get("@table"))}),1),$def(self,"$to_h",(function(){return this.table.$dup()}),0),$def(self,"$to_n",(function(){return this.table.$to_n()}),0),$def(self,"$hash",(function(){return this.table.$hash()}),0),self.$attr_reader("table"),$def(self,"$delete_field",(function(name){var sym;sym=name.$to_sym();try{this.$singleton_class().$__send__("remove_method",sym,sym+"=")}catch($err){if(!Opal.rescue($err,[$$("NameError")]))throw $err;Opal.pop_exception()}return this.table.$delete(sym)}),1),$def(self,"$new_ostruct_member",(function(name){return name=name.$to_sym(),$truthy(this["$respond_to?"](name))||($send(this,"define_singleton_method",[name],(function $$9(){var self=null==$$9.$$s?this:$$9.$$s;return null==self.table&&(self.table=nil),self.table["$[]"](name)}),{$$arity:0,$$s:this}),$send(this,"define_singleton_method",[name+"="],(function $$10(x){var $writer,self=null==$$10.$$s?this:$$10.$$s;return null==self.table&&(self.table=nil),null==x&&(x=nil),$writer=[name,x],$send(self.table,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]}),{$$arity:1,$$s:this})),name}),1),$def(self,"$inspect",(function(){var self=this,result=nil,top=void 0===ostruct_ids,ostruct_id=self.$__id__();return function(){try{return result="#<"+self.$class(),top&&(ostruct_ids={}),ostruct_ids.hasOwnProperty(ostruct_id)?result+" ...>":(ostruct_ids[ostruct_id]=!0,$truthy(self.table["$any?"]())&&(result=$rb_plus(result," ")),result=$rb_plus(result,$send(self.$each_pair(),"map",[],(function(name,value){return null==name&&(name=nil),null==value&&(value=nil),name+"="+value.$inspect()}),2).$join(", ")),result=$rb_plus(result,">"))}finally{top&&(ostruct_ids=void 0)}}()}),0),$alias(self,"to_s","inspect")}($nesting[0],0,$nesting)};
diff --git a/opal/master/ostruct.min.js.gz b/opal/master/ostruct.min.js.gz
index 38f98b7b..581e7e0e 100644
Binary files a/opal/master/ostruct.min.js.gz and b/opal/master/ostruct.min.js.gz differ
diff --git a/opal/master/pathname.js b/opal/master/pathname.js
index 2dd3be88..37eb52c5 100644
--- a/opal/master/pathname.js
+++ b/opal/master/pathname.js
@@ -1,18 +1,11 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["corelib/comparable"] = function(Opal) {
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $falsy = Opal.falsy, $module = Opal.module, $truthy = Opal.truthy;
-
-  Opal.add_stubs(['$>', '$<', '$===', '$raise', '$class', '$<=>', '$equal?']);
-  return (function($base, $parent_nesting) {
+Opal.modules["corelib/comparable"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var nil = Opal.nil, $$$ = Opal.$$$, $truthy = Opal.truthy, $module = Opal.module, $rb_gt = Opal.rb_gt, $rb_lt = Opal.rb_lt, $eqeqeq = Opal.eqeqeq, $Kernel = Opal.Kernel, $def = Opal.def;
+
+  Opal.add_stubs('>,<,===,raise,class,<=>,equal?');
+  return (function($base) {
     var self = $module($base, 'Comparable');
 
-    var $nesting = [self].concat($parent_nesting), $Comparable_$eq_eq$1, $Comparable_$gt$2, $Comparable_$gt_eq$3, $Comparable_$lt$4, $Comparable_$lt_eq$5, $Comparable_between$ques$6, $Comparable_clamp$7, $case = nil;
+    var $ret_or_1 = nil;
 
     
     
@@ -26,25 +19,24 @@ Opal.modules["corelib/comparable"] = function(Opal) {
 
     function fail_comparison(lhs, rhs) {
       var class_name;
-      (function() {$case = rhs;
-    if (nil['$===']($case) || true['$===']($case) || false['$===']($case) || $$($nesting, 'Integer')['$===']($case) || $$($nesting, 'Float')['$===']($case)) {return class_name = rhs.$inspect();}
-    else {return class_name = rhs.$$class;}})()
-      self.$raise($$($nesting, 'ArgumentError'), "" + "comparison of " + ((lhs).$class()) + " with " + (class_name) + " failed")
+      (($eqeqeq(nil, ($ret_or_1 = rhs)) || (($eqeqeq(true, $ret_or_1) || (($eqeqeq(false, $ret_or_1) || (($eqeqeq($$$('Integer'), $ret_or_1) || ($eqeqeq($$$('Float'), $ret_or_1))))))))) ? (class_name = rhs.$inspect()) : (class_name = rhs.$$class))
+      $Kernel.$raise($$$('ArgumentError'), "comparison of " + ((lhs).$class()) + " with " + (class_name) + " failed")
     }
 
     function cmp_or_fail(lhs, rhs) {
       var cmp = (lhs)['$<=>'](rhs);
-      if ($falsy(cmp)) fail_comparison(lhs, rhs);
+      if (!$truthy(cmp)) fail_comparison(lhs, rhs);
       return normalize(cmp);
     }
   ;
     
-    Opal.def(self, '$==', $Comparable_$eq_eq$1 = function(other) {
+    $def(self, '$==', function $Comparable_$eq_eq$1(other) {
       var self = this, cmp = nil;
 
       
       if ($truthy(self['$equal?'](other))) {
-        return true};
+        return true
+      };
       
       if (self["$<=>"] == Opal.Kernel["$<=>"]) {
         return false;
@@ -56,55 +48,54 @@ Opal.modules["corelib/comparable"] = function(Opal) {
         return false;
       }
     ;
-      if ($truthy((cmp = self['$<=>'](other)))) {
-      } else {
+      if (!$truthy((cmp = self['$<=>'](other)))) {
         return false
       };
       return normalize(cmp) == 0;;
-    }, $Comparable_$eq_eq$1.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$>', $Comparable_$gt$2 = function(other) {
+    $def(self, '$>', function $Comparable_$gt$2(other) {
       var self = this;
 
       return cmp_or_fail(self, other) > 0;
-    }, $Comparable_$gt$2.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$>=', $Comparable_$gt_eq$3 = function(other) {
+    $def(self, '$>=', function $Comparable_$gt_eq$3(other) {
       var self = this;
 
       return cmp_or_fail(self, other) >= 0;
-    }, $Comparable_$gt_eq$3.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$<', $Comparable_$lt$4 = function(other) {
+    $def(self, '$<', function $Comparable_$lt$4(other) {
       var self = this;
 
       return cmp_or_fail(self, other) < 0;
-    }, $Comparable_$lt$4.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$<=', $Comparable_$lt_eq$5 = function(other) {
+    $def(self, '$<=', function $Comparable_$lt_eq$5(other) {
       var self = this;
 
       return cmp_or_fail(self, other) <= 0;
-    }, $Comparable_$lt_eq$5.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$between?', $Comparable_between$ques$6 = function(min, max) {
+    $def(self, '$between?', function $Comparable_between$ques$6(min, max) {
       var self = this;
 
       
       if ($rb_lt(self, min)) {
-        return false};
+        return false
+      };
       if ($rb_gt(self, max)) {
-        return false};
+        return false
+      };
       return true;
-    }, $Comparable_between$ques$6.$$arity = 2);
-    return (Opal.def(self, '$clamp', $Comparable_clamp$7 = function $$clamp(min, max) {
+    }, 2);
+    return $def(self, '$clamp', function $$clamp(min, max) {
       var self = this;
 
       
       
-      if (max == null) {
-        max = nil;
-      };
+      if (max == null) max = nil;;
       
       var c, excl;
 
@@ -113,7 +104,7 @@ Opal.modules["corelib/comparable"] = function(Opal) {
         // provide a single Range argument instead of 2 Comparables.
 
         if (!Opal.is_a(min, Opal.Range)) {
-          self.$raise($$($nesting, 'TypeError'), "" + "wrong argument type " + (min.$class()) + " (expected Range)")
+          $Kernel.$raise($$$('TypeError'), "wrong argument type " + (min.$class()) + " (expected Range)")
         }
 
         excl = min.excl;
@@ -121,12 +112,12 @@ Opal.modules["corelib/comparable"] = function(Opal) {
         min = min.begin;
 
         if (max !== nil && excl) {
-          self.$raise($$($nesting, 'ArgumentError'), "cannot clamp with an exclusive range")
+          $Kernel.$raise($$$('ArgumentError'), "cannot clamp with an exclusive range")
         }
       }
 
       if (min !== nil && max !== nil && cmp_or_fail(min, max) > 0) {
-        self.$raise($$($nesting, 'ArgumentError'), "min argument must be smaller than max argument")
+        $Kernel.$raise($$$('ArgumentError'), "min argument must be smaller than max argument")
       }
 
       if (min !== nil) {
@@ -144,156 +135,153 @@ Opal.modules["corelib/comparable"] = function(Opal) {
 
       return self;
     ;
-    }, $Comparable_clamp$7.$$arity = -2), nil) && 'clamp';
-  })($nesting[0], $nesting)
+    }, -2);
+  })('::')
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["pathname"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send, $alias = Opal.alias, $module = Opal.module;
+Opal.modules["pathname"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $const_set = Opal.const_set, $regexp = Opal.regexp, $eqeqeq = Opal.eqeqeq, $truthy = Opal.truthy, $eqeq = Opal.eqeq, $def = Opal.def, $defs = Opal.defs, $to_ary = Opal.to_ary, $send = Opal.send, $to_a = Opal.to_a, $neqeq = Opal.neqeq, $rb_plus = Opal.rb_plus, $not = Opal.not, $alias = Opal.alias, $module = Opal.module;
 
-  Opal.add_stubs(['$require', '$include', '$quote', '$===', '$to_s', '$path', '$respond_to?', '$to_path', '$is_a?', '$nil?', '$raise', '$class', '$==', '$attr_reader', '$!', '$relative?', '$chop_basename', '$basename', '$=~', '$new', '$source', '$[]', '$rindex', '$sub', '$absolute?', '$expand_path', '$plus', '$unshift', '$length', '$!=', '$empty?', '$first', '$shift', '$+', '$join', '$dirname', '$pop', '$reverse_each', '$directory?', '$extname', '$<=>', '$nonzero?', '$proc', '$casecmp', '$cleanpath', '$inspect', '$include?', '$fill', '$map', '$entries']);
+  Opal.add_stubs('require,include,quote,===,to_s,path,respond_to?,to_path,is_a?,nil?,raise,class,==,new,pwd,attr_reader,!,relative?,chop_basename,basename,=~,source,[],rindex,sub,absolute?,expand_path,plus,unshift,length,!=,empty?,first,shift,+,join,dirname,pop,reverse_each,directory?,extname,<=>,nonzero?,proc,casecmp,cleanpath,inspect,include?,fill,map,entries');
   
   self.$require("corelib/comparable");
   (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Pathname');
 
-    var $nesting = [self].concat($parent_nesting), $Pathname_initialize$1, $Pathname_$eq_eq$2, $Pathname_absolute$ques$3, $Pathname_relative$ques$4, $Pathname_chop_basename$5, $Pathname_root$ques$6, $Pathname_parent$7, $Pathname_sub$8, $Pathname_cleanpath$9, $Pathname_to_path$10, $Pathname_hash$11, $Pathname_expand_path$12, $Pathname_$plus$13, $Pathname_plus$14, $Pathname_join$15, $Pathname_split$17, $Pathname_dirname$18, $Pathname_basename$19, $Pathname_directory$ques$20, $Pathname_extname$21, $Pathname_$lt_eq_gt$22, $Pathname$23, $Pathname$24, $Pathname_relative_path_from$25, $Pathname_entries$26;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-    self.$$prototype.path = nil;
+    $proto.path = nil;
     
-    self.$include($$($nesting, 'Comparable'));
-    Opal.const_set($nesting[0], 'SEPARATOR_PAT', Opal.regexp([$$($nesting, 'Regexp').$quote($$$($$($nesting, 'File'), 'SEPARATOR'))]));
+    self.$include($$('Comparable'));
+    $const_set($nesting[0], 'SEPARATOR_PAT', $regexp([$$('Regexp').$quote($$$($$('File'), 'SEPARATOR'))]));
     
-    Opal.def(self, '$initialize', $Pathname_initialize$1 = function $$initialize(path) {
+    $def(self, '$initialize', function $$initialize(path) {
       var self = this;
 
       
-      if ($truthy($$($nesting, 'Pathname')['$==='](path))) {
+      if ($eqeqeq($$('Pathname'), path)) {
         self.path = path.$path().$to_s()
       } else if ($truthy(path['$respond_to?']("to_path"))) {
         self.path = path.$to_path()
-      } else if ($truthy(path['$is_a?']($$($nesting, 'String')))) {
+      } else if ($truthy(path['$is_a?']($$('String')))) {
         self.path = path
       } else if ($truthy(path['$nil?']())) {
-        self.$raise($$($nesting, 'TypeError'), "no implicit conversion of nil into String")
+        self.$raise($$('TypeError'), "no implicit conversion of nil into String")
       } else {
-        self.$raise($$($nesting, 'TypeError'), "" + "no implicit conversion of " + (path.$class()) + " into String")
+        self.$raise($$('TypeError'), "no implicit conversion of " + (path.$class()) + " into String")
       };
-      if (self.path['$==']("\u0000")) {
-        return self.$raise($$($nesting, 'ArgumentError'))
+      if ($eqeq(self.path, "\u0000")) {
+        return self.$raise($$('ArgumentError'))
       } else {
         return nil
       };
-    }, $Pathname_initialize$1.$$arity = 1);
+    }, 1);
+    $defs(self, '$pwd', function $$pwd() {
+      var self = this;
+
+      return self.$new($$('Dir').$pwd())
+    }, 0);
     self.$attr_reader("path");
     
-    Opal.def(self, '$==', $Pathname_$eq_eq$2 = function(other) {
+    $def(self, '$==', function $Pathname_$eq_eq$1(other) {
       var self = this;
 
       return other.$path()['$=='](self.path)
-    }, $Pathname_$eq_eq$2.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$absolute?', $Pathname_absolute$ques$3 = function() {
+    $def(self, '$absolute?', function $Pathname_absolute$ques$2() {
       var self = this;
 
       return self['$relative?']()['$!']()
-    }, $Pathname_absolute$ques$3.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$relative?', $Pathname_relative$ques$4 = function() {
+    $def(self, '$relative?', function $Pathname_relative$ques$3() {
       var $a, $b, $c, self = this, path = nil, r = nil;
 
       
       path = self.path;
       while ($truthy((r = self.$chop_basename(path)))) {
-        $c = r, $b = Opal.to_ary($c), (path = ($b[0] == null ? nil : $b[0])), $c
+        $c = r, $b = $to_ary($c), (path = ($b[0] == null ? nil : $b[0])), $c
       };
       return path['$==']("");
-    }, $Pathname_relative$ques$4.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$chop_basename', $Pathname_chop_basename$5 = function $$chop_basename(path) {
-      var self = this, base = nil;
+    $def(self, '$chop_basename', function $$chop_basename(path) {
+      var base = nil;
 
       
-      base = $$($nesting, 'File').$basename(path);
-      if ($truthy($$($nesting, 'Regexp').$new("" + "^" + ($$$($$($nesting, 'Pathname'), 'SEPARATOR_PAT').$source()) + "?$")['$=~'](base))) {
+      base = $$('File').$basename(path);
+      if ($truthy($$('Regexp').$new("^" + ($$$($$('Pathname'), 'SEPARATOR_PAT').$source()) + "?$")['$=~'](base))) {
         return nil
       } else {
         return [path['$[]'](0, path.$rindex(base)), base]
       };
-    }, $Pathname_chop_basename$5.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$root?', $Pathname_root$ques$6 = function() {
+    $def(self, '$root?', function $Pathname_root$ques$4() {
       var self = this;
 
       return self.path['$==']("/")
-    }, $Pathname_root$ques$6.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$parent', $Pathname_parent$7 = function $$parent() {
+    $def(self, '$parent', function $$parent() {
       var self = this, new_path = nil;
 
       
       new_path = self.path.$sub(/\/([^\/]+\/?$)/, "");
-      if (new_path['$==']("")) {
-        new_path = (function() {if ($truthy(self['$absolute?']())) {
-          return "/"
-        } else {
-          return "."
-        }; return nil; })()};
-      return $$($nesting, 'Pathname').$new(new_path);
-    }, $Pathname_parent$7.$$arity = 0);
+      if ($eqeq(new_path, "")) {
+        new_path = ($truthy(self['$absolute?']()) ? ("/") : ("."))
+      };
+      return $$('Pathname').$new(new_path);
+    }, 0);
     
-    Opal.def(self, '$sub', $Pathname_sub$8 = function $$sub($a) {
+    $def(self, '$sub', function $$sub($a) {
       var $post_args, args, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
-      return $$($nesting, 'Pathname').$new($send(self.path, 'sub', Opal.to_a(args)));
-    }, $Pathname_sub$8.$$arity = -1);
+      return $$('Pathname').$new($send(self.path, 'sub', $to_a(args)));
+    }, -1);
     
-    Opal.def(self, '$cleanpath', $Pathname_cleanpath$9 = function $$cleanpath() {
+    $def(self, '$cleanpath', function $$cleanpath() {
       var self = this;
 
       return Opal.normalize(self.path)
-    }, $Pathname_cleanpath$9.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$to_path', $Pathname_to_path$10 = function $$to_path() {
+    $def(self, '$to_path', function $$to_path() {
       var self = this;
 
       return self.path
-    }, $Pathname_to_path$10.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$hash', $Pathname_hash$11 = function $$hash() {
+    $def(self, '$hash', function $$hash() {
       var self = this;
 
       return self.path
-    }, $Pathname_hash$11.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$expand_path', $Pathname_expand_path$12 = function $$expand_path() {
+    $def(self, '$expand_path', function $$expand_path() {
       var self = this;
 
-      return $$($nesting, 'Pathname').$new($$($nesting, 'File').$expand_path(self.path))
-    }, $Pathname_expand_path$12.$$arity = 0);
+      return $$('Pathname').$new($$('File').$expand_path(self.path))
+    }, 0);
     
-    Opal.def(self, '$+', $Pathname_$plus$13 = function(other) {
+    $def(self, '$+', function $Pathname_$plus$5(other) {
       var self = this;
 
       
-      if ($truthy($$($nesting, 'Pathname')['$==='](other))) {
-      } else {
-        other = $$($nesting, 'Pathname').$new(other)
+      if (!$eqeqeq($$('Pathname'), other)) {
+        other = $$('Pathname').$new(other)
       };
-      return $$($nesting, 'Pathname').$new(self.$plus(self.path, other.$to_s()));
-    }, $Pathname_$plus$13.$$arity = 1);
+      return $$('Pathname').$new(self.$plus(self.path, other.$to_s()));
+    }, 1);
     
-    Opal.def(self, '$plus', $Pathname_plus$14 = function $$plus(path1, path2) {
-      var $a, $b, $c, self = this, prefix2 = nil, index_list2 = nil, basename_list2 = nil, r2 = nil, basename2 = nil, prefix1 = nil, $ret_or_1 = nil, r1 = nil, basename1 = nil, $ret_or_2 = nil, $ret_or_3 = nil, $ret_or_4 = nil, $ret_or_5 = nil, suffix2 = nil;
+    $def(self, '$plus', function $$plus(path1, path2) {
+      var $a, $b, $c, self = this, prefix2 = nil, index_list2 = nil, basename_list2 = nil, r2 = nil, basename2 = nil, prefix1 = nil, $ret_or_1 = nil, r1 = nil, basename1 = nil, suffix2 = nil;
 
       
       prefix2 = path2;
@@ -301,184 +289,146 @@ Opal.modules["pathname"] = function(Opal) {
       basename_list2 = [];
       while ($truthy((r2 = self.$chop_basename(prefix2)))) {
         
-        $c = r2, $b = Opal.to_ary($c), (prefix2 = ($b[0] == null ? nil : $b[0])), (basename2 = ($b[1] == null ? nil : $b[1])), $c;
+        $c = r2, $b = $to_ary($c), (prefix2 = ($b[0] == null ? nil : $b[0])), (basename2 = ($b[1] == null ? nil : $b[1])), $c;
         index_list2.$unshift(prefix2.$length());
         basename_list2.$unshift(basename2);
       };
-      if ($truthy(prefix2['$!='](""))) {
-        return path2};
+      if ($neqeq(prefix2, "")) {
+        return path2
+      };
       prefix1 = path1;
       while ($truthy(true)) {
         
-        while ($truthy((function() {if ($truthy(($ret_or_1 = basename_list2['$empty?']()['$!']()))) {
-          return basename_list2.$first()['$=='](".")
-        } else {
-          return $ret_or_1
-        }; return nil; })())) {
+        while ($truthy(($truthy(($ret_or_1 = basename_list2['$empty?']()['$!']())) ? (basename_list2.$first()['$=='](".")) : ($ret_or_1)))) {
           
           index_list2.$shift();
           basename_list2.$shift();
         };
-        if ($truthy((r1 = self.$chop_basename(prefix1)))) {
-        } else {
+        if (!$truthy((r1 = self.$chop_basename(prefix1)))) {
           break;
         };
-        $c = r1, $b = Opal.to_ary($c), (prefix1 = ($b[0] == null ? nil : $b[0])), (basename1 = ($b[1] == null ? nil : $b[1])), $c;
-        if (basename1['$=='](".")) {
-          continue;};
-        if ($truthy((function() {if ($truthy(($ret_or_2 = (function() {if ($truthy(($ret_or_3 = basename1['$==']("..")))) {
-          return $ret_or_3
-        } else {
-          return basename_list2['$empty?']()
-        }; return nil; })()))) {
-          return $ret_or_2
-        } else {
-          return basename_list2.$first()['$!=']("..")
-        }; return nil; })())) {
+        $c = r1, $b = $to_ary($c), (prefix1 = ($b[0] == null ? nil : $b[0])), (basename1 = ($b[1] == null ? nil : $b[1])), $c;
+        if ($eqeq(basename1, ".")) {
+          continue;
+        };
+        if ((($eqeq(basename1, "..") || ($truthy(basename_list2['$empty?']()))) || ($neqeq(basename_list2.$first(), "..")))) {
           
           prefix1 = $rb_plus(prefix1, basename1);
-          break;;};
+          break;;
+        };
         index_list2.$shift();
         basename_list2.$shift();
       };
       r1 = self.$chop_basename(prefix1);
-      if ($truthy((function() {if ($truthy(($ret_or_4 = r1['$!']()))) {
-        return Opal.regexp([$$($nesting, 'SEPARATOR_PAT')])['$=~']($$($nesting, 'File').$basename(prefix1))
-      } else {
-        return $ret_or_4
-      }; return nil; })())) {
-        while ($truthy((function() {if ($truthy(($ret_or_5 = basename_list2['$empty?']()['$!']()))) {
-          return basename_list2.$first()['$==']("..")
-        } else {
-          return $ret_or_5
-        }; return nil; })())) {
+      if (($not(r1) && ($truthy($regexp([$$('SEPARATOR_PAT')])['$=~']($$('File').$basename(prefix1)))))) {
+        while ($truthy(($truthy(($ret_or_1 = basename_list2['$empty?']()['$!']())) ? (basename_list2.$first()['$==']("..")) : ($ret_or_1)))) {
           
           index_list2.$shift();
           basename_list2.$shift();
-        }};
-      if ($truthy(basename_list2['$empty?']()['$!']())) {
+        }
+      };
+      if ($not(basename_list2['$empty?']())) {
         
         suffix2 = path2['$[]'](Opal.Range.$new(index_list2.$first(), -1, false));
         if ($truthy(r1)) {
-          return $$($nesting, 'File').$join(prefix1, suffix2)
+          return $$('File').$join(prefix1, suffix2)
         } else {
           return $rb_plus(prefix1, suffix2)
         };
       } else if ($truthy(r1)) {
         return prefix1
       } else {
-        return $$($nesting, 'File').$dirname(prefix1)
+        return $$('File').$dirname(prefix1)
       };
-    }, $Pathname_plus$14.$$arity = 2);
+    }, 2);
     
-    Opal.def(self, '$join', $Pathname_join$15 = function $$join($a) {try {
+    $def(self, '$join', function $$join($a) {try {
 
-      var $post_args, args, $$16, self = this, result = nil;
+      var $post_args, args, self = this, result = nil;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
       if ($truthy(args['$empty?']())) {
-        return self};
+        return self
+      };
       result = args.$pop();
-      if ($truthy($$($nesting, 'Pathname')['$==='](result))) {
-      } else {
-        result = $$($nesting, 'Pathname').$new(result)
+      if (!$eqeqeq($$('Pathname'), result)) {
+        result = $$('Pathname').$new(result)
       };
       if ($truthy(result['$absolute?']())) {
-        return result};
-      $send(args, 'reverse_each', [], ($$16 = function(arg){var self = $$16.$$s == null ? this : $$16.$$s;
-
+        return result
+      };
+      $send(args, 'reverse_each', [], function $$6(arg){
         
         
-        if (arg == null) {
-          arg = nil;
-        };
-        if ($truthy($$($nesting, 'Pathname')['$==='](arg))) {
-        } else {
-          arg = $$($nesting, 'Pathname').$new(arg)
+        if (arg == null) arg = nil;;
+        if (!$eqeqeq($$('Pathname'), arg)) {
+          arg = $$('Pathname').$new(arg)
         };
         result = $rb_plus(arg, result);
         if ($truthy(result['$absolute?']())) {
           Opal.ret(result)
         } else {
           return nil
-        };}, $$16.$$s = self, $$16.$$arity = 1, $$16));
+        };}, 1);
       return $rb_plus(self, result);
       } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
-    }, $Pathname_join$15.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$split', $Pathname_split$17 = function $$split() {
+    $def(self, '$split', function $$split() {
       var self = this;
 
       return [self.$dirname(), self.$basename()]
-    }, $Pathname_split$17.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$dirname', $Pathname_dirname$18 = function $$dirname() {
+    $def(self, '$dirname', function $$dirname() {
       var self = this;
 
-      return $$($nesting, 'Pathname').$new($$($nesting, 'File').$dirname(self.path))
-    }, $Pathname_dirname$18.$$arity = 0);
+      return $$('Pathname').$new($$('File').$dirname(self.path))
+    }, 0);
     
-    Opal.def(self, '$basename', $Pathname_basename$19 = function $$basename() {
+    $def(self, '$basename', function $$basename() {
       var self = this;
 
-      return $$($nesting, 'Pathname').$new($$($nesting, 'File').$basename(self.path))
-    }, $Pathname_basename$19.$$arity = 0);
+      return $$('Pathname').$new($$('File').$basename(self.path))
+    }, 0);
     
-    Opal.def(self, '$directory?', $Pathname_directory$ques$20 = function() {
+    $def(self, '$directory?', function $Pathname_directory$ques$7() {
       var self = this;
 
-      return $$($nesting, 'File')['$directory?'](self.path)
-    }, $Pathname_directory$ques$20.$$arity = 0);
+      return $$('File')['$directory?'](self.path)
+    }, 0);
     
-    Opal.def(self, '$extname', $Pathname_extname$21 = function $$extname() {
+    $def(self, '$extname', function $$extname() {
       var self = this;
 
-      return $$($nesting, 'File').$extname(self.path)
-    }, $Pathname_extname$21.$$arity = 0);
+      return $$('File').$extname(self.path)
+    }, 0);
     
-    Opal.def(self, '$<=>', $Pathname_$lt_eq_gt$22 = function(other) {
+    $def(self, '$<=>', function $Pathname_$lt_eq_gt$8(other) {
       var self = this;
 
       return self.$path()['$<=>'](other.$path())
-    }, $Pathname_$lt_eq_gt$22.$$arity = 1);
-    $alias(self, "eql?", "==");
-    $alias(self, "===", "==");
-    $alias(self, "to_str", "to_path");
-    $alias(self, "to_s", "to_path");
-    Opal.const_set($nesting[0], 'SAME_PATHS', (function() {if ($truthy($$$($$($nesting, 'File'), 'FNM_SYSCASE')['$nonzero?']())) {
-      return $send(self, 'proc', [], ($Pathname$23 = function(a, b){var self = $Pathname$23.$$s == null ? this : $Pathname$23.$$s;
-
-        
-        
-        if (a == null) {
-          a = nil;
-        };
-        
-        if (b == null) {
-          b = nil;
-        };
-        return a.$casecmp(b)['$=='](0);}, $Pathname$23.$$s = self, $Pathname$23.$$arity = 2, $Pathname$23))
-    } else {
-      return $send(self, 'proc', [], ($Pathname$24 = function(a, b){var self = $Pathname$24.$$s == null ? this : $Pathname$24.$$s;
-
-        
-        
-        if (a == null) {
-          a = nil;
-        };
-        
-        if (b == null) {
-          b = nil;
-        };
-        return a['$=='](b);}, $Pathname$24.$$s = self, $Pathname$24.$$arity = 2, $Pathname$24))
-    }; return nil; })());
+    }, 1);
+    $const_set($nesting[0], 'SAME_PATHS', ($truthy($$$($$('File'), 'FNM_SYSCASE')['$nonzero?']()) ? ($send(self, 'proc', [], function $Pathname$9(a, b){
+      
+      
+      if (a == null) a = nil;;
+      
+      if (b == null) b = nil;;
+      return a.$casecmp(b)['$=='](0);}, 2)) : ($send(self, 'proc', [], function $Pathname$10(a, b){
+      
+      
+      if (a == null) a = nil;;
+      
+      if (b == null) b = nil;;
+      return a['$=='](b);}, 2))));
     
-    Opal.def(self, '$relative_path_from', $Pathname_relative_path_from$25 = function $$relative_path_from(base_directory) {
-      var $a, $b, $c, self = this, dest_directory = nil, dest_prefix = nil, dest_names = nil, r = nil, basename = nil, base_prefix = nil, base_names = nil, $ret_or_6 = nil, $ret_or_7 = nil, relpath_names = nil;
+    $def(self, '$relative_path_from', function $$relative_path_from(base_directory) {
+      var $a, $b, $c, self = this, dest_directory = nil, dest_prefix = nil, dest_names = nil, r = nil, basename = nil, base_prefix = nil, base_names = nil, $ret_or_1 = nil, $ret_or_2 = nil, relpath_names = nil;
 
       
       dest_directory = self.$cleanpath().$to_s();
@@ -487,67 +437,63 @@ Opal.modules["pathname"] = function(Opal) {
       dest_names = [];
       while ($truthy((r = self.$chop_basename(dest_prefix)))) {
         
-        $c = r, $b = Opal.to_ary($c), (dest_prefix = ($b[0] == null ? nil : $b[0])), (basename = ($b[1] == null ? nil : $b[1])), $c;
-        if ($truthy(basename['$!=']("."))) {
-          dest_names.$unshift(basename)};
+        $c = r, $b = $to_ary($c), (dest_prefix = ($b[0] == null ? nil : $b[0])), (basename = ($b[1] == null ? nil : $b[1])), $c;
+        if ($neqeq(basename, ".")) {
+          dest_names.$unshift(basename)
+        };
       };
       base_prefix = base_directory;
       base_names = [];
       while ($truthy((r = self.$chop_basename(base_prefix)))) {
         
-        $c = r, $b = Opal.to_ary($c), (base_prefix = ($b[0] == null ? nil : $b[0])), (basename = ($b[1] == null ? nil : $b[1])), $c;
-        if ($truthy(basename['$!=']("."))) {
-          base_names.$unshift(basename)};
+        $c = r, $b = $to_ary($c), (base_prefix = ($b[0] == null ? nil : $b[0])), (basename = ($b[1] == null ? nil : $b[1])), $c;
+        if ($neqeq(basename, ".")) {
+          base_names.$unshift(basename)
+        };
       };
-      if ($truthy($$($nesting, 'SAME_PATHS')['$[]'](dest_prefix, base_prefix))) {
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "" + "different prefix: " + (dest_prefix.$inspect()) + " and " + (base_directory.$inspect()))
+      if (!$truthy($$('SAME_PATHS')['$[]'](dest_prefix, base_prefix))) {
+        self.$raise($$('ArgumentError'), "different prefix: " + (dest_prefix.$inspect()) + " and " + (base_directory.$inspect()))
       };
-      while ($truthy((function() {if ($truthy(($ret_or_6 = (function() {if ($truthy(($ret_or_7 = dest_names['$empty?']()['$!']()))) {
-        return base_names['$empty?']()['$!']()
-      } else {
-        return $ret_or_7
-      }; return nil; })()))) {
-        return $$($nesting, 'SAME_PATHS')['$[]'](dest_names.$first(), base_names.$first())
-      } else {
-        return $ret_or_6
-      }; return nil; })())) {
+      while ($truthy(($truthy(($ret_or_1 = ($truthy(($ret_or_2 = dest_names['$empty?']()['$!']())) ? (base_names['$empty?']()['$!']()) : ($ret_or_2)))) ? ($$('SAME_PATHS')['$[]'](dest_names.$first(), base_names.$first())) : ($ret_or_1)))) {
         
         dest_names.$shift();
         base_names.$shift();
       };
       if ($truthy(base_names['$include?'](".."))) {
-        self.$raise($$($nesting, 'ArgumentError'), "" + "base_directory has ..: " + (base_directory.$inspect()))};
+        self.$raise($$('ArgumentError'), "base_directory has ..: " + (base_directory.$inspect()))
+      };
       base_names.$fill("..");
       relpath_names = $rb_plus(base_names, dest_names);
       if ($truthy(relpath_names['$empty?']())) {
-        return $$($nesting, 'Pathname').$new(".")
+        return $$('Pathname').$new(".")
       } else {
-        return $$($nesting, 'Pathname').$new($send($$($nesting, 'File'), 'join', Opal.to_a(relpath_names)))
+        return $$('Pathname').$new($send($$('File'), 'join', $to_a(relpath_names)))
       };
-    }, $Pathname_relative_path_from$25.$$arity = 1);
-    return (Opal.def(self, '$entries', $Pathname_entries$26 = function $$entries() {
-      var $$27, self = this;
+    }, 1);
+    
+    $def(self, '$entries', function $$entries() {
+      var self = this;
 
-      return $send($$($nesting, 'Dir').$entries(self.path), 'map', [], ($$27 = function(f){var self = $$27.$$s == null ? this : $$27.$$s;
+      return $send($$('Dir').$entries(self.path), 'map', [], function $$11(f){var self = $$11.$$s == null ? this : $$11.$$s;
 
         
         
-        if (f == null) {
-          f = nil;
-        };
-        return self.$class().$new(f);}, $$27.$$s = self, $$27.$$arity = 1, $$27))
-    }, $Pathname_entries$26.$$arity = 0), nil) && 'entries';
+        if (f == null) f = nil;;
+        return self.$class().$new(f);}, {$$arity: 1, $$s: self})
+    }, 0);
+    $alias(self, "===", "==");
+    $alias(self, "eql?", "==");
+    $alias(self, "to_s", "to_path");
+    return $alias(self, "to_str", "to_path");
   })($nesting[0], null, $nesting);
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Kernel');
 
-    var $nesting = [self].concat($parent_nesting), $Kernel_Pathname$28;
-
-    return (Opal.def(self, '$Pathname', $Kernel_Pathname$28 = function $$Pathname(path) {
-      var self = this;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return $$($nesting, 'Pathname').$new(path)
-    }, $Kernel_Pathname$28.$$arity = 1), nil) && 'Pathname'
+    return $def(self, '$Pathname', function $$Pathname(path) {
+      
+      return $$('Pathname').$new(path)
+    }, 1)
   })($nesting[0], $nesting);
 };
diff --git a/opal/master/pathname.min.js b/opal/master/pathname.min.js
index f2faa471..107da7c8 100644
--- a/opal/master/pathname.min.js
+++ b/opal/master/pathname.min.js
@@ -1 +1 @@
-Opal.modules["corelib/comparable"]=function(Opal){function $rb_gt(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?rhs<lhs:lhs["$>"](rhs)}function $rb_lt(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs<rhs:lhs["$<"](rhs)}Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$falsy=Opal.falsy,$module=Opal.module,$truthy=Opal.truthy;return Opal.add_stubs(["$>","$<","$===","$raise","$class","$<=>","$equal?"]),function($base,$Comparable_clamp$7){var self=$module($base,"Comparable"),$nesting=[self].concat($Comparable_clamp$7),$case=nil;function normalize(what){return Opal.is_a(what,Opal.Integer)?what:$rb_gt(what,0)?1:$rb_lt(what,0)?-1:0}function cmp_or_fail(lhs,rhs){var cmp=lhs["$<=>"](rhs);return $falsy(cmp)&&function(lhs,class_name){$case=class_name,class_name=nil["$==="]($case)||(!0)["$==="]($case)||(!1)["$==="]($case)||$$($nesting,"Integer")["$==="]($case)||$$($nesting,"Float")["$==="]($case)?class_name.$inspect():class_name.$$class,self.$raise($$($nesting,"ArgumentError"),"comparison of "+lhs.$class()+" with "+class_name+" failed")}(lhs,rhs),normalize(cmp)}return Opal.def(self,"$==",$Comparable_clamp$7=function(other){var cmp;return!!$truthy(this["$equal?"](other))||this["$<=>"]!=Opal.Kernel["$<=>"]&&(this.$$comparable?(delete this.$$comparable,!1):!!$truthy(cmp=this["$<=>"](other))&&0==normalize(cmp))},$Comparable_clamp$7.$$arity=1),Opal.def(self,"$>",$Comparable_clamp$7=function(other){return 0<cmp_or_fail(this,other)},$Comparable_clamp$7.$$arity=1),Opal.def(self,"$>=",$Comparable_clamp$7=function(other){return 0<=cmp_or_fail(this,other)},$Comparable_clamp$7.$$arity=1),Opal.def(self,"$<",$Comparable_clamp$7=function(other){return cmp_or_fail(this,other)<0},$Comparable_clamp$7.$$arity=1),Opal.def(self,"$<=",$Comparable_clamp$7=function(other){return cmp_or_fail(this,other)<=0},$Comparable_clamp$7.$$arity=1),Opal.def(self,"$between?",$Comparable_clamp$7=function(min,max){return!$rb_lt(this,min)&&!$rb_gt(this,max)},$Comparable_clamp$7.$$arity=2),Opal.def(self,"$clamp",$Comparable_clamp$7=function(min,max){var c,excl;if(null==max&&(max=nil),max===nil&&(Opal.is_a(min,Opal.Range)||this.$raise($$($nesting,"TypeError"),"wrong argument type "+min.$class()+" (expected Range)"),excl=min.excl,max=min.end,min=min.begin,max!==nil&&excl&&this.$raise($$($nesting,"ArgumentError"),"cannot clamp with an exclusive range")),min!==nil&&max!==nil&&0<cmp_or_fail(min,max)&&this.$raise($$($nesting,"ArgumentError"),"min argument must be smaller than max argument"),min!==nil){if(0==(c=cmp_or_fail(this,min)))return this;if(c<0)return min}return max!==nil&&0<(c=cmp_or_fail(this,max))?max:this},$Comparable_clamp$7.$$arity=-2),nil&&"clamp"}($nesting[0],$nesting)},Opal.modules.pathname=function(Opal){function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send,$alias=Opal.alias,$module=Opal.module;return Opal.add_stubs(["$require","$include","$quote","$===","$to_s","$path","$respond_to?","$to_path","$is_a?","$nil?","$raise","$class","$==","$attr_reader","$!","$relative?","$chop_basename","$basename","$=~","$new","$source","$[]","$rindex","$sub","$absolute?","$expand_path","$plus","$unshift","$length","$!=","$empty?","$first","$shift","$+","$join","$dirname","$pop","$reverse_each","$directory?","$extname","$<=>","$nonzero?","$proc","$casecmp","$cleanpath","$inspect","$include?","$fill","$map","$entries"]),self.$require("corelib/comparable"),function($Pathname_entries$26,$Pathname_relative_path_from$25){var $Pathname$23,$Pathname$24,$nesting=[$Pathname_entries$26=$klass($Pathname_entries$26,null,"Pathname")].concat($Pathname_relative_path_from$25);$Pathname_entries$26.$$prototype.path=nil,$Pathname_entries$26.$include($$($nesting,"Comparable")),Opal.const_set($nesting[0],"SEPARATOR_PAT",Opal.regexp([$$($nesting,"Regexp").$quote($$$($$($nesting,"File"),"SEPARATOR"))])),Opal.def($Pathname_entries$26,"$initialize",$Pathname_relative_path_from$25=function(path){return $truthy($$($nesting,"Pathname")["$==="](path))?this.path=path.$path().$to_s():$truthy(path["$respond_to?"]("to_path"))?this.path=path.$to_path():$truthy(path["$is_a?"]($$($nesting,"String")))?this.path=path:$truthy(path["$nil?"]())?this.$raise($$($nesting,"TypeError"),"no implicit conversion of nil into String"):this.$raise($$($nesting,"TypeError"),"no implicit conversion of "+path.$class()+" into String"),this.path["$=="]("\0")?this.$raise($$($nesting,"ArgumentError")):nil},$Pathname_relative_path_from$25.$$arity=1),$Pathname_entries$26.$attr_reader("path"),Opal.def($Pathname_entries$26,"$==",$Pathname_relative_path_from$25=function(other){return other.$path()["$=="](this.path)},$Pathname_relative_path_from$25.$$arity=1),Opal.def($Pathname_entries$26,"$absolute?",$Pathname_relative_path_from$25=function(){return this["$relative?"]()["$!"]()},$Pathname_relative_path_from$25.$$arity=0),Opal.def($Pathname_entries$26,"$relative?",$Pathname_relative_path_from$25=function(){for(var $b,r,path=nil,path=this.path;$truthy(r=this.$chop_basename(path));)$b=r,path=null==($b=Opal.to_ary($b))[0]?nil:$b[0];return path["$=="]("")},$Pathname_relative_path_from$25.$$arity=0),Opal.def($Pathname_entries$26,"$chop_basename",$Pathname_relative_path_from$25=function(path){var base=$$($nesting,"File").$basename(path);return $truthy($$($nesting,"Regexp").$new("^"+$$$($$($nesting,"Pathname"),"SEPARATOR_PAT").$source()+"?$")["$=~"](base))?nil:[path["$[]"](0,path.$rindex(base)),base]},$Pathname_relative_path_from$25.$$arity=1),Opal.def($Pathname_entries$26,"$root?",$Pathname_relative_path_from$25=function(){return this.path["$=="]("/")},$Pathname_relative_path_from$25.$$arity=0),Opal.def($Pathname_entries$26,"$parent",$Pathname_relative_path_from$25=function(){var self=this,new_path=nil;return(new_path=self.path.$sub(/\/([^\/]+\/?$)/,""))["$=="]("")&&(new_path=$truthy(self["$absolute?"]())?"/":"."),$$($nesting,"Pathname").$new(new_path)},$Pathname_relative_path_from$25.$$arity=0),Opal.def($Pathname_entries$26,"$sub",$Pathname_relative_path_from$25=function($a){var args=Opal.slice.call(arguments,0,arguments.length);return $$($nesting,"Pathname").$new($send(this.path,"sub",Opal.to_a(args)))},$Pathname_relative_path_from$25.$$arity=-1),Opal.def($Pathname_entries$26,"$cleanpath",$Pathname_relative_path_from$25=function(){return Opal.normalize(this.path)},$Pathname_relative_path_from$25.$$arity=0),Opal.def($Pathname_entries$26,"$to_path",$Pathname_relative_path_from$25=function(){return this.path},$Pathname_relative_path_from$25.$$arity=0),Opal.def($Pathname_entries$26,"$hash",$Pathname_relative_path_from$25=function(){return this.path},$Pathname_relative_path_from$25.$$arity=0),Opal.def($Pathname_entries$26,"$expand_path",$Pathname_relative_path_from$25=function(){return $$($nesting,"Pathname").$new($$($nesting,"File").$expand_path(this.path))},$Pathname_relative_path_from$25.$$arity=0),Opal.def($Pathname_entries$26,"$+",$Pathname_relative_path_from$25=function(other){return $truthy($$($nesting,"Pathname")["$==="](other))||(other=$$($nesting,"Pathname").$new(other)),$$($nesting,"Pathname").$new(this.$plus(this.path,other.$to_s()))},$Pathname_relative_path_from$25.$$arity=1),Opal.def($Pathname_entries$26,"$plus",$Pathname_relative_path_from$25=function(path1,path2){for(var $b,$c,r2,basename2,suffix2,prefix2=nil,index_list2=nil,basename_list2=nil,prefix1=nil,$ret_or_1=nil,r1=nil,basename1=nil,$ret_or_2=nil,$ret_or_3=nil,$ret_or_4=nil,$ret_or_5=nil,prefix2=path2,index_list2=[],basename_list2=[];$truthy(r2=this.$chop_basename(prefix2));)$c=r2,prefix2=null==($b=Opal.to_ary($c))[0]?nil:$b[0],basename2=null==$b[1]?nil:$b[1],index_list2.$unshift(prefix2.$length()),basename_list2.$unshift(basename2);if($truthy(prefix2["$!="]("")))return path2;for(prefix1=path1;$truthy(!0);){for(;$truthy($truthy($ret_or_1=basename_list2["$empty?"]()["$!"]())?basename_list2.$first()["$=="]("."):$ret_or_1);)index_list2.$shift(),basename_list2.$shift();if(!$truthy(r1=this.$chop_basename(prefix1)))break;if($c=r1,$b=Opal.to_ary($c),prefix1=null==$b[0]?nil:$b[0],!(basename1=null==$b[1]?nil:$b[1])["$=="](".")){if($truthy($truthy($ret_or_2=$truthy($ret_or_3=basename1["$=="](".."))?$ret_or_3:basename_list2["$empty?"]())?$ret_or_2:basename_list2.$first()["$!="](".."))){prefix1=$rb_plus(prefix1,basename1);break}index_list2.$shift(),basename_list2.$shift()}}if(r1=this.$chop_basename(prefix1),$truthy($truthy($ret_or_4=r1["$!"]())?Opal.regexp([$$($nesting,"SEPARATOR_PAT")])["$=~"]($$($nesting,"File").$basename(prefix1)):$ret_or_4))for(;$truthy($truthy($ret_or_5=basename_list2["$empty?"]()["$!"]())?basename_list2.$first()["$=="](".."):$ret_or_5);)index_list2.$shift(),basename_list2.$shift();return $truthy(basename_list2["$empty?"]()["$!"]())?(suffix2=path2["$[]"](Opal.Range.$new(index_list2.$first(),-1,!1)),$truthy(r1)?$$($nesting,"File").$join(prefix1,suffix2):$rb_plus(prefix1,suffix2)):$truthy(r1)?prefix1:$$($nesting,"File").$dirname(prefix1)},$Pathname_relative_path_from$25.$$arity=2),Opal.def($Pathname_entries$26,"$join",$Pathname_relative_path_from$25=function($a){try{var $$16,result=nil,args=Opal.slice.call(arguments,0,arguments.length);return $truthy(args["$empty?"]())?this:(result=args.$pop(),$truthy($$($nesting,"Pathname")["$==="](result))||(result=$$($nesting,"Pathname").$new(result)),$truthy(result["$absolute?"]())?result:($send(args,"reverse_each",[],(($$16=function(arg){null==$$16.$$s||$$16.$$s;if(null==arg&&(arg=nil),$truthy($$($nesting,"Pathname")["$==="](arg))||(arg=$$($nesting,"Pathname").$new(arg)),result=$rb_plus(arg,result),!$truthy(result["$absolute?"]()))return nil;Opal.ret(result)}).$$s=this,$$16.$$arity=1,$$16)),$rb_plus(this,result)))}catch($returner){if($returner===Opal.returner)return $returner.$v;throw $returner}},$Pathname_relative_path_from$25.$$arity=-1),Opal.def($Pathname_entries$26,"$split",$Pathname_relative_path_from$25=function(){return[this.$dirname(),this.$basename()]},$Pathname_relative_path_from$25.$$arity=0),Opal.def($Pathname_entries$26,"$dirname",$Pathname_relative_path_from$25=function(){return $$($nesting,"Pathname").$new($$($nesting,"File").$dirname(this.path))},$Pathname_relative_path_from$25.$$arity=0),Opal.def($Pathname_entries$26,"$basename",$Pathname_relative_path_from$25=function(){return $$($nesting,"Pathname").$new($$($nesting,"File").$basename(this.path))},$Pathname_relative_path_from$25.$$arity=0),Opal.def($Pathname_entries$26,"$directory?",$Pathname_relative_path_from$25=function(){return $$($nesting,"File")["$directory?"](this.path)},$Pathname_relative_path_from$25.$$arity=0),Opal.def($Pathname_entries$26,"$extname",$Pathname_relative_path_from$25=function(){return $$($nesting,"File").$extname(this.path)},$Pathname_relative_path_from$25.$$arity=0),Opal.def($Pathname_entries$26,"$<=>",$Pathname_relative_path_from$25=function(other){return this.$path()["$<=>"](other.$path())},$Pathname_relative_path_from$25.$$arity=1),$alias($Pathname_entries$26,"eql?","=="),$alias($Pathname_entries$26,"===","=="),$alias($Pathname_entries$26,"to_str","to_path"),$alias($Pathname_entries$26,"to_s","to_path"),Opal.const_set($nesting[0],"SAME_PATHS",$truthy($$$($$($nesting,"File"),"FNM_SYSCASE")["$nonzero?"]())?$send($Pathname_entries$26,"proc",[],(($Pathname$23=function(a,b){null==$Pathname$23.$$s||$Pathname$23.$$s;return null==a&&(a=nil),null==b&&(b=nil),a.$casecmp(b)["$=="](0)}).$$s=$Pathname_entries$26,$Pathname$23.$$arity=2,$Pathname$23)):$send($Pathname_entries$26,"proc",[],(($Pathname$24=function(a,b){null==$Pathname$24.$$s||$Pathname$24.$$s;return null==a&&(a=nil),null==b&&(b=nil),a["$=="](b)}).$$s=$Pathname_entries$26,$Pathname$24.$$arity=2,$Pathname$24))),Opal.def($Pathname_entries$26,"$relative_path_from",$Pathname_relative_path_from$25=function(base_directory){var $b,$c,dest_prefix=nil,dest_names=nil,r=nil,basename=nil,base_prefix=nil,base_names=nil,$ret_or_6=nil,$ret_or_7=nil,relpath_names=nil,dest_directory=this.$cleanpath().$to_s();for(base_directory=base_directory.$cleanpath().$to_s(),dest_prefix=dest_directory,dest_names=[];$truthy(r=this.$chop_basename(dest_prefix));)$c=r,dest_prefix=null==($b=Opal.to_ary($c))[0]?nil:$b[0],basename=null==$b[1]?nil:$b[1],$truthy(basename["$!="]("."))&&dest_names.$unshift(basename);for(base_prefix=base_directory,base_names=[];$truthy(r=this.$chop_basename(base_prefix));)$c=r,base_prefix=null==($b=Opal.to_ary($c))[0]?nil:$b[0],basename=null==$b[1]?nil:$b[1],$truthy(basename["$!="]("."))&&base_names.$unshift(basename);for($truthy($$($nesting,"SAME_PATHS")["$[]"](dest_prefix,base_prefix))||this.$raise($$($nesting,"ArgumentError"),"different prefix: "+dest_prefix.$inspect()+" and "+base_directory.$inspect());$truthy($truthy($ret_or_6=$truthy($ret_or_7=dest_names["$empty?"]()["$!"]())?base_names["$empty?"]()["$!"]():$ret_or_7)?$$($nesting,"SAME_PATHS")["$[]"](dest_names.$first(),base_names.$first()):$ret_or_6);)dest_names.$shift(),base_names.$shift();return $truthy(base_names["$include?"](".."))&&this.$raise($$($nesting,"ArgumentError"),"base_directory has ..: "+base_directory.$inspect()),base_names.$fill(".."),relpath_names=$rb_plus(base_names,dest_names),$truthy(relpath_names["$empty?"]())?$$($nesting,"Pathname").$new("."):$$($nesting,"Pathname").$new($send($$($nesting,"File"),"join",Opal.to_a(relpath_names)))},$Pathname_relative_path_from$25.$$arity=1),Opal.def($Pathname_entries$26,"$entries",$Pathname_entries$26=function(){var $$27;return $send($$($nesting,"Dir").$entries(this.path),"map",[],(($$27=function(f){var self=null==$$27.$$s?this:$$27.$$s;return null==f&&(f=nil),self.$class().$new(f)}).$$s=this,$$27.$$arity=1,$$27))},$Pathname_entries$26.$$arity=0)}($nesting[0],$nesting),function($Kernel_Pathname$28,$parent_nesting){var $Kernel_Pathname$28=$module($Kernel_Pathname$28,"Kernel"),$nesting=[$Kernel_Pathname$28].concat($parent_nesting);return Opal.def($Kernel_Pathname$28,"$Pathname",$Kernel_Pathname$28=function(path){return $$($nesting,"Pathname").$new(path)},$Kernel_Pathname$28.$$arity=1),nil&&"Pathname"}($nesting[0],$nesting)};
+Opal.modules["corelib/comparable"]=function(Opal){var nil=Opal.nil,$$$=Opal.$$$,$truthy=Opal.truthy,$module=Opal.module,$rb_gt=Opal.rb_gt,$rb_lt=Opal.rb_lt,$eqeqeq=Opal.eqeqeq,$Kernel=Opal.Kernel,$def=Opal.def;return Opal.add_stubs(">,<,===,raise,class,<=>,equal?"),function($base){var self=$module("::","Comparable"),$ret_or_1=nil;function normalize(what){return Opal.is_a(what,Opal.Integer)?what:$rb_gt(what,0)?1:$rb_lt(what,0)?-1:0}function cmp_or_fail(lhs,rhs){var cmp=lhs["$<=>"](rhs);return $truthy(cmp)||function(lhs,rhs){var class_name;class_name=$eqeqeq(nil,$ret_or_1=rhs)||$eqeqeq(!0,$ret_or_1)||$eqeqeq(!1,$ret_or_1)||$eqeqeq($$$("Integer"),$ret_or_1)||$eqeqeq($$$("Float"),$ret_or_1)?rhs.$inspect():rhs.$$class,$Kernel.$raise($$$("ArgumentError"),"comparison of "+lhs.$class()+" with "+class_name+" failed")}(lhs,rhs),normalize(cmp)}return $def(self,"$==",(function(other){var cmp;return!!$truthy(this["$equal?"](other))||this["$<=>"]!=Opal.Kernel["$<=>"]&&(this.$$comparable?(delete this.$$comparable,!1):!!$truthy(cmp=this["$<=>"](other))&&0==normalize(cmp))}),1),$def(self,"$>",(function(other){return cmp_or_fail(this,other)>0}),1),$def(self,"$>=",(function(other){return cmp_or_fail(this,other)>=0}),1),$def(self,"$<",(function(other){return cmp_or_fail(this,other)<0}),1),$def(self,"$<=",(function(other){return cmp_or_fail(this,other)<=0}),1),$def(self,"$between?",(function(min,max){return!$rb_lt(this,min)&&!$rb_gt(this,max)}),2),$def(self,"$clamp",(function(min,max){var c,excl;if(null==max&&(max=nil),max===nil&&(Opal.is_a(min,Opal.Range)||$Kernel.$raise($$$("TypeError"),"wrong argument type "+min.$class()+" (expected Range)"),excl=min.excl,max=min.end,min=min.begin,max!==nil&&excl&&$Kernel.$raise($$$("ArgumentError"),"cannot clamp with an exclusive range")),min!==nil&&max!==nil&&cmp_or_fail(min,max)>0&&$Kernel.$raise($$$("ArgumentError"),"min argument must be smaller than max argument"),min!==nil){if(0==(c=cmp_or_fail(this,min)))return this;if(c<0)return min}return max!==nil&&(c=cmp_or_fail(this,max))>0?max:this}),-2)}()},Opal.modules.pathname=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$klass=Opal.klass,$const_set=Opal.const_set,$regexp=Opal.regexp,$eqeqeq=Opal.eqeqeq,$truthy=Opal.truthy,$eqeq=Opal.eqeq,$def=Opal.def,$defs=Opal.defs,$to_ary=Opal.to_ary,$send=Opal.send,$to_a=Opal.to_a,$neqeq=Opal.neqeq,$rb_plus=Opal.rb_plus,$not=Opal.not,$alias=Opal.alias,$module=Opal.module;return Opal.add_stubs("require,include,quote,===,to_s,path,respond_to?,to_path,is_a?,nil?,raise,class,==,new,pwd,attr_reader,!,relative?,chop_basename,basename,=~,source,[],rindex,sub,absolute?,expand_path,plus,unshift,length,!=,empty?,first,shift,+,join,dirname,pop,reverse_each,directory?,extname,<=>,nonzero?,proc,casecmp,cleanpath,inspect,include?,fill,map,entries"),self.$require("corelib/comparable"),function($base,$super,$parent_nesting){var self=$klass($base,null,"Pathname"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);self.$$prototype.path=nil,self.$include($$("Comparable")),$const_set($nesting[0],"SEPARATOR_PAT",$regexp([$$("Regexp").$quote($$$($$("File"),"SEPARATOR"))])),$def(self,"$initialize",(function(path){return $eqeqeq($$("Pathname"),path)?this.path=path.$path().$to_s():$truthy(path["$respond_to?"]("to_path"))?this.path=path.$to_path():$truthy(path["$is_a?"]($$("String")))?this.path=path:$truthy(path["$nil?"]())?this.$raise($$("TypeError"),"no implicit conversion of nil into String"):this.$raise($$("TypeError"),"no implicit conversion of "+path.$class()+" into String"),$eqeq(this.path,"\0")?this.$raise($$("ArgumentError")):nil}),1),$defs(self,"$pwd",(function(){return this.$new($$("Dir").$pwd())}),0),self.$attr_reader("path"),$def(self,"$==",(function(other){return other.$path()["$=="](this.path)}),1),$def(self,"$absolute?",(function(){return this["$relative?"]()["$!"]()}),0),$def(self,"$relative?",(function(){var $b,path=nil,r=nil;for(path=this.path;$truthy(r=this.$chop_basename(path));)path=null==($b=$to_ary(r))[0]?nil:$b[0];return path["$=="]("")}),0),$def(self,"$chop_basename",(function(path){var base;return base=$$("File").$basename(path),$truthy($$("Regexp").$new("^"+$$$($$("Pathname"),"SEPARATOR_PAT").$source()+"?$")["$=~"](base))?nil:[path["$[]"](0,path.$rindex(base)),base]}),1),$def(self,"$root?",(function(){return this.path["$=="]("/")}),0),$def(self,"$parent",(function(){var new_path=nil;return new_path=this.path.$sub(/\/([^\/]+\/?$)/,""),$eqeq(new_path,"")&&(new_path=$truthy(this["$absolute?"]())?"/":"."),$$("Pathname").$new(new_path)}),0),$def(self,"$sub",(function($a){var args,self=this;return args=Opal.slice.call(arguments),$$("Pathname").$new($send(self.path,"sub",$to_a(args)))}),-1),$def(self,"$cleanpath",(function(){return Opal.normalize(this.path)}),0),$def(self,"$to_path",(function(){return this.path}),0),$def(self,"$hash",(function(){return this.path}),0),$def(self,"$expand_path",(function(){return $$("Pathname").$new($$("File").$expand_path(this.path))}),0),$def(self,"$+",(function(other){return $eqeqeq($$("Pathname"),other)||(other=$$("Pathname").$new(other)),$$("Pathname").$new(this.$plus(this.path,other.$to_s()))}),1),$def(self,"$plus",(function(path1,path2){var $b,prefix2=nil,index_list2=nil,basename_list2=nil,r2=nil,basename2=nil,prefix1=nil,$ret_or_1=nil,r1=nil,basename1=nil,suffix2=nil;for(prefix2=path2,index_list2=[],basename_list2=[];$truthy(r2=this.$chop_basename(prefix2));)prefix2=null==($b=$to_ary(r2))[0]?nil:$b[0],basename2=null==$b[1]?nil:$b[1],index_list2.$unshift(prefix2.$length()),basename_list2.$unshift(basename2);if($neqeq(prefix2,""))return path2;for(prefix1=path1;$truthy(!0);){for(;$truthy($truthy($ret_or_1=basename_list2["$empty?"]()["$!"]())?basename_list2.$first()["$=="]("."):$ret_or_1);)index_list2.$shift(),basename_list2.$shift();if(!$truthy(r1=this.$chop_basename(prefix1)))break;if(prefix1=null==($b=$to_ary(r1))[0]?nil:$b[0],basename1=null==$b[1]?nil:$b[1],!$eqeq(basename1,".")){if($eqeq(basename1,"..")||$truthy(basename_list2["$empty?"]())||$neqeq(basename_list2.$first(),"..")){prefix1=$rb_plus(prefix1,basename1);break}index_list2.$shift(),basename_list2.$shift()}}if(r1=this.$chop_basename(prefix1),$not(r1)&&$truthy($regexp([$$("SEPARATOR_PAT")])["$=~"]($$("File").$basename(prefix1))))for(;$truthy($truthy($ret_or_1=basename_list2["$empty?"]()["$!"]())?basename_list2.$first()["$=="](".."):$ret_or_1);)index_list2.$shift(),basename_list2.$shift();return $not(basename_list2["$empty?"]())?(suffix2=path2["$[]"](Opal.Range.$new(index_list2.$first(),-1,!1)),$truthy(r1)?$$("File").$join(prefix1,suffix2):$rb_plus(prefix1,suffix2)):$truthy(r1)?prefix1:$$("File").$dirname(prefix1)}),2),$def(self,"$join",(function($a){try{var $post_args,args,self=this,result=nil;return $post_args=Opal.slice.call(arguments),$truthy((args=$post_args)["$empty?"]())?self:(result=args.$pop(),$eqeqeq($$("Pathname"),result)||(result=$$("Pathname").$new(result)),$truthy(result["$absolute?"]())?result:($send(args,"reverse_each",[],(function(arg){if(null==arg&&(arg=nil),$eqeqeq($$("Pathname"),arg)||(arg=$$("Pathname").$new(arg)),result=$rb_plus(arg,result),!$truthy(result["$absolute?"]()))return nil;Opal.ret(result)}),1),$rb_plus(self,result)))}catch($returner){if($returner===Opal.returner)return $returner.$v;throw $returner}}),-1),$def(self,"$split",(function(){return[this.$dirname(),this.$basename()]}),0),$def(self,"$dirname",(function(){return $$("Pathname").$new($$("File").$dirname(this.path))}),0),$def(self,"$basename",(function(){return $$("Pathname").$new($$("File").$basename(this.path))}),0),$def(self,"$directory?",(function(){return $$("File")["$directory?"](this.path)}),0),$def(self,"$extname",(function(){return $$("File").$extname(this.path)}),0),$def(self,"$<=>",(function(other){return this.$path()["$<=>"](other.$path())}),1),$const_set($nesting[0],"SAME_PATHS",$truthy($$$($$("File"),"FNM_SYSCASE")["$nonzero?"]())?$send(self,"proc",[],(function(a,b){return null==a&&(a=nil),null==b&&(b=nil),a.$casecmp(b)["$=="](0)}),2):$send(self,"proc",[],(function(a,b){return null==a&&(a=nil),null==b&&(b=nil),a["$=="](b)}),2)),$def(self,"$relative_path_from",(function(base_directory){var $b,dest_directory,dest_prefix=nil,dest_names=nil,r=nil,basename=nil,base_prefix=nil,base_names=nil,$ret_or_1=nil,$ret_or_2=nil,relpath_names=nil;for(dest_directory=this.$cleanpath().$to_s(),base_directory=base_directory.$cleanpath().$to_s(),dest_prefix=dest_directory,dest_names=[];$truthy(r=this.$chop_basename(dest_prefix));)dest_prefix=null==($b=$to_ary(r))[0]?nil:$b[0],basename=null==$b[1]?nil:$b[1],$neqeq(basename,".")&&dest_names.$unshift(basename);for(base_prefix=base_directory,base_names=[];$truthy(r=this.$chop_basename(base_prefix));)base_prefix=null==($b=$to_ary(r))[0]?nil:$b[0],basename=null==$b[1]?nil:$b[1],$neqeq(basename,".")&&base_names.$unshift(basename);for($truthy($$("SAME_PATHS")["$[]"](dest_prefix,base_prefix))||this.$raise($$("ArgumentError"),"different prefix: "+dest_prefix.$inspect()+" and "+base_directory.$inspect());$truthy($truthy($ret_or_1=$truthy($ret_or_2=dest_names["$empty?"]()["$!"]())?base_names["$empty?"]()["$!"]():$ret_or_2)?$$("SAME_PATHS")["$[]"](dest_names.$first(),base_names.$first()):$ret_or_1);)dest_names.$shift(),base_names.$shift();return $truthy(base_names["$include?"](".."))&&this.$raise($$("ArgumentError"),"base_directory has ..: "+base_directory.$inspect()),base_names.$fill(".."),relpath_names=$rb_plus(base_names,dest_names),$truthy(relpath_names["$empty?"]())?$$("Pathname").$new("."):$$("Pathname").$new($send($$("File"),"join",$to_a(relpath_names)))}),1),$def(self,"$entries",(function(){return $send($$("Dir").$entries(this.path),"map",[],(function $$11(f){return null==f&&(f=nil),(null==$$11.$$s?this:$$11.$$s).$class().$new(f)}),{$$arity:1,$$s:this})}),0),$alias(self,"===","=="),$alias(self,"eql?","=="),$alias(self,"to_s","to_path"),$alias(self,"to_str","to_path")}($nesting[0],0,$nesting),function($base,$parent_nesting){var self=$module($base,"Kernel"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return $def(self,"$Pathname",(function(path){return $$("Pathname").$new(path)}),1)}($nesting[0],$nesting)};
diff --git a/opal/master/pathname.min.js.gz b/opal/master/pathname.min.js.gz
index 6d0d16b3..6637ef5d 100644
Binary files a/opal/master/pathname.min.js.gz and b/opal/master/pathname.min.js.gz differ
diff --git a/opal/master/pp.js b/opal/master/pp.js
index 39339d63..6a04425e 100644
--- a/opal/master/pp.js
+++ b/opal/master/pp.js
@@ -1,191 +1,179 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["thread"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send, $hash2 = Opal.hash2, $alias = Opal.alias;
-
-  Opal.add_stubs(['$allocate', '$core_initialize!', '$current', '$raise', '$[]', '$coerce_key_name', '$[]=', '$-', '$key?', '$keys', '$private', '$coerce_to!', '$clear', '$empty?', '$size', '$shift', '$push', '$each', '$to_proc', '$=~', '$last_match', '$to_i', '$inspect', '$attr_reader', '$locked?', '$lock', '$unlock']);
-  
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'ThreadError');
-
-    var $nesting = [self].concat($parent_nesting);
+Opal.modules["thread"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $truthy = Opal.truthy, $defs = Opal.defs, $def = Opal.def, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $hash2 = Opal.hash2, $Opal = Opal.Opal, $alias = Opal.alias, $const_set = Opal.const_set;
 
-    return nil
-  })($nesting[0], $$($nesting, 'StandardError'), $nesting);
+  Opal.add_stubs('allocate,core_initialize!,current,raise,[],coerce_key_name,[]=,-,key?,keys,private,coerce_to!,clear,empty?,size,shift,push,each,to_proc,=~,last_match,to_i,inspect,attr_reader,locked?,lock,unlock');
+  
+  $klass($nesting[0], $$('StandardError'), 'ThreadError');
   (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Thread');
 
-    var $nesting = [self].concat($parent_nesting), $Thread_current$1, $Thread_list$2, $Thread_initialize$3, $Thread_$$$4, $Thread_$$$eq$5, $Thread_key$ques$6, $Thread_keys$7, $Thread_thread_variable_get$8, $Thread_thread_variable_set$9, $Thread_thread_variable$ques$10, $Thread_thread_variables$11, $Thread_core_initialize$excl$12, $Thread_coerce_key_name$13;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-    self.$$prototype.fiber_locals = self.$$prototype.thread_locals = nil;
+    $proto.fiber_locals = $proto.thread_locals = nil;
     
-    Opal.defs(self, '$current', $Thread_current$1 = function $$current() {
+    $defs(self, '$current', function $$current() {
       var self = this;
       if (self.current == null) self.current = nil;
 
       
-      if ($truthy(self.current)) {
-      } else {
+      if (!$truthy(self.current)) {
         
         self.current = self.$allocate();
         self.current['$core_initialize!']();
       };
       return self.current;
-    }, $Thread_current$1.$$arity = 0);
-    Opal.defs(self, '$list', $Thread_list$2 = function $$list() {
+    }, 0);
+    $defs(self, '$list', function $$list() {
       var self = this;
 
       return [self.$current()]
-    }, $Thread_list$2.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$initialize', $Thread_initialize$3 = function $$initialize($a) {
+    $def(self, '$initialize', function $$initialize($a) {
       var $post_args, args, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
-      return self.$raise($$($nesting, 'NotImplementedError'), "Thread creation not available");
-    }, $Thread_initialize$3.$$arity = -1);
+      return self.$raise($$('NotImplementedError'), "Thread creation not available");
+    }, -1);
     
-    Opal.def(self, '$[]', $Thread_$$$4 = function(key) {
+    $def(self, '$[]', function $Thread_$$$1(key) {
       var self = this;
 
       return self.fiber_locals['$[]'](self.$coerce_key_name(key))
-    }, $Thread_$$$4.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$[]=', $Thread_$$$eq$5 = function(key, value) {
+    $def(self, '$[]=', function $Thread_$$$eq$2(key, value) {
       var self = this, $writer = nil;
 
       
       $writer = [self.$coerce_key_name(key), value];
-      $send(self.fiber_locals, '[]=', Opal.to_a($writer));
+      $send(self.fiber_locals, '[]=', $to_a($writer));
       return $writer[$rb_minus($writer["length"], 1)];
-    }, $Thread_$$$eq$5.$$arity = 2);
+    }, 2);
     
-    Opal.def(self, '$key?', $Thread_key$ques$6 = function(key) {
+    $def(self, '$key?', function $Thread_key$ques$3(key) {
       var self = this;
 
       return self.fiber_locals['$key?'](self.$coerce_key_name(key))
-    }, $Thread_key$ques$6.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$keys', $Thread_keys$7 = function $$keys() {
+    $def(self, '$keys', function $$keys() {
       var self = this;
 
       return self.fiber_locals.$keys()
-    }, $Thread_keys$7.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$thread_variable_get', $Thread_thread_variable_get$8 = function $$thread_variable_get(key) {
+    $def(self, '$thread_variable_get', function $$thread_variable_get(key) {
       var self = this;
 
       return self.thread_locals['$[]'](self.$coerce_key_name(key))
-    }, $Thread_thread_variable_get$8.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$thread_variable_set', $Thread_thread_variable_set$9 = function $$thread_variable_set(key, value) {
+    $def(self, '$thread_variable_set', function $$thread_variable_set(key, value) {
       var self = this, $writer = nil;
 
       
       $writer = [self.$coerce_key_name(key), value];
-      $send(self.thread_locals, '[]=', Opal.to_a($writer));
+      $send(self.thread_locals, '[]=', $to_a($writer));
       return $writer[$rb_minus($writer["length"], 1)];
-    }, $Thread_thread_variable_set$9.$$arity = 2);
+    }, 2);
     
-    Opal.def(self, '$thread_variable?', $Thread_thread_variable$ques$10 = function(key) {
+    $def(self, '$thread_variable?', function $Thread_thread_variable$ques$4(key) {
       var self = this;
 
       return self.thread_locals['$key?'](self.$coerce_key_name(key))
-    }, $Thread_thread_variable$ques$10.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$thread_variables', $Thread_thread_variables$11 = function $$thread_variables() {
+    $def(self, '$thread_variables', function $$thread_variables() {
       var self = this;
 
       return self.thread_locals.$keys()
-    }, $Thread_thread_variables$11.$$arity = 0);
+    }, 0);
     self.$private();
     
-    Opal.def(self, '$core_initialize!', $Thread_core_initialize$excl$12 = function() {
+    $def(self, '$core_initialize!', function $Thread_core_initialize$excl$5() {
       var self = this;
 
       
       self.thread_locals = $hash2([], {});
       return (self.fiber_locals = $hash2([], {}));
-    }, $Thread_core_initialize$excl$12.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$coerce_key_name', $Thread_coerce_key_name$13 = function $$coerce_key_name(key) {
-      var self = this;
-
-      return $$($nesting, 'Opal')['$coerce_to!'](key, $$($nesting, 'String'), "to_s")
-    }, $Thread_coerce_key_name$13.$$arity = 1);
+    $def(self, '$coerce_key_name', function $$coerce_key_name(key) {
+      
+      return $Opal['$coerce_to!'](key, $$('String'), "to_s")
+    }, 1);
     (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Queue');
 
-      var $nesting = [self].concat($parent_nesting), $Queue_initialize$14, $Queue_clear$15, $Queue_empty$ques$16, $Queue_size$17, $Queue_pop$18, $Queue_push$19, $Queue_each$20;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.storage = nil;
+      $proto.storage = nil;
       
       
-      Opal.def(self, '$initialize', $Queue_initialize$14 = function $$initialize() {
+      $def(self, '$initialize', function $$initialize() {
         var self = this;
 
         return self.$clear()
-      }, $Queue_initialize$14.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$clear', $Queue_clear$15 = function $$clear() {
+      $def(self, '$clear', function $$clear() {
         var self = this;
 
         return (self.storage = [])
-      }, $Queue_clear$15.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$empty?', $Queue_empty$ques$16 = function() {
+      $def(self, '$empty?', function $Queue_empty$ques$6() {
         var self = this;
 
         return self.storage['$empty?']()
-      }, $Queue_empty$ques$16.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$size', $Queue_size$17 = function $$size() {
+      $def(self, '$size', function $$size() {
         var self = this;
 
         return self.storage.$size()
-      }, $Queue_size$17.$$arity = 0);
-      $alias(self, "length", "size");
+      }, 0);
       
-      Opal.def(self, '$pop', $Queue_pop$18 = function $$pop(non_block) {
+      $def(self, '$pop', function $$pop(non_block) {
         var self = this;
 
         
         
-        if (non_block == null) {
-          non_block = false;
-        };
+        if (non_block == null) non_block = false;;
         if ($truthy(self['$empty?']())) {
           
           if ($truthy(non_block)) {
-            self.$raise($$($nesting, 'ThreadError'), "Queue empty")};
-          self.$raise($$($nesting, 'ThreadError'), "Deadlock");};
+            self.$raise($$('ThreadError'), "Queue empty")
+          };
+          self.$raise($$('ThreadError'), "Deadlock");
+        };
         return self.storage.$shift();
-      }, $Queue_pop$18.$$arity = -1);
-      $alias(self, "shift", "pop");
-      $alias(self, "deq", "pop");
+      }, -1);
       
-      Opal.def(self, '$push', $Queue_push$19 = function $$push(value) {
+      $def(self, '$push', function $$push(value) {
         var self = this;
 
         return self.storage.$push(value)
-      }, $Queue_push$19.$$arity = 1);
-      $alias(self, "<<", "push");
-      $alias(self, "enq", "push");
-      return (Opal.def(self, '$each', $Queue_each$20 = function $$each() {
-        var $iter = $Queue_each$20.$$p, block = $iter || nil, self = this;
+      }, 1);
+      
+      $def(self, '$each', function $$each() {
+        var block = $$each.$$p || nil, self = this;
 
-        if ($iter) $Queue_each$20.$$p = null;
+        delete $$each.$$p;
         
-        
-        if ($iter) $Queue_each$20.$$p = null;;
+        ;
         return $send(self.storage, 'each', [], block.$to_proc());
-      }, $Queue_each$20.$$arity = 0), nil) && 'each';
+      }, 0);
+      $alias(self, "<<", "push");
+      $alias(self, "deq", "pop");
+      $alias(self, "enq", "push");
+      $alias(self, "length", "size");
+      return $alias(self, "shift", "pop");
     })($nesting[0], null, $nesting);
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Backtrace');
@@ -195,82 +183,79 @@ Opal.modules["thread"] = function(Opal) {
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'Location');
 
-        var $nesting = [self].concat($parent_nesting), $Location_initialize$21, $Location_to_s$22, $Location_inspect$23;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.label = self.$$prototype.str = nil;
+        $proto.label = $proto.str = nil;
         
         
-        Opal.def(self, '$initialize', $Location_initialize$21 = function $$initialize(str) {
+        $def(self, '$initialize', function $$initialize(str) {
           var self = this, $ret_or_1 = nil;
 
           
           self.str = str;
           str['$=~'](/^(.*?):(\d+):(\d+):in `(.*?)'$/);
-          self.path = $$($nesting, 'Regexp').$last_match(1);
-          self.label = $$($nesting, 'Regexp').$last_match(4);
-          self.lineno = $$($nesting, 'Regexp').$last_match(2).$to_i();
+          self.path = $$('Regexp').$last_match(1);
+          self.label = $$('Regexp').$last_match(4);
+          self.lineno = $$('Regexp').$last_match(2).$to_i();
           self.label['$=~'](/(\w+)$/);
-          return (self.base_label = (function() {if ($truthy(($ret_or_1 = $$($nesting, 'Regexp').$last_match(1)))) {
-            return $ret_or_1
-          } else {
-            return self.label
-          }; return nil; })());
-        }, $Location_initialize$21.$$arity = 1);
+          return (self.base_label = ($truthy(($ret_or_1 = $$('Regexp').$last_match(1))) ? ($ret_or_1) : (self.label)));
+        }, 1);
         
-        Opal.def(self, '$to_s', $Location_to_s$22 = function $$to_s() {
+        $def(self, '$to_s', function $$to_s() {
           var self = this;
 
           return self.str
-        }, $Location_to_s$22.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$inspect', $Location_inspect$23 = function $$inspect() {
+        $def(self, '$inspect', function $$inspect() {
           var self = this;
 
           return self.str.$inspect()
-        }, $Location_inspect$23.$$arity = 0);
+        }, 0);
         self.$attr_reader("base_label", "label", "lineno", "path");
         return $alias(self, "absolute_path", "path");
       })($nesting[0], null, $nesting)
     })($nesting[0], null, $nesting);
   })($nesting[0], null, $nesting);
-  Opal.const_set($nesting[0], 'Queue', $$$($$($nesting, 'Thread'), 'Queue'));
+  $const_set($nesting[0], 'Queue', $$$($$('Thread'), 'Queue'));
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Mutex');
 
-    var $nesting = [self].concat($parent_nesting), $Mutex_initialize$24, $Mutex_lock$25, $Mutex_locked$ques$26, $Mutex_owned$ques$27, $Mutex_try_lock$28, $Mutex_unlock$29, $Mutex_synchronize$30;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-    self.$$prototype.locked = nil;
+    $proto.locked = nil;
     
     
-    Opal.def(self, '$initialize', $Mutex_initialize$24 = function $$initialize() {
+    $def(self, '$initialize', function $$initialize() {
       var self = this;
 
       return (self.locked = false)
-    }, $Mutex_initialize$24.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$lock', $Mutex_lock$25 = function $$lock() {
+    $def(self, '$lock', function $$lock() {
       var self = this;
 
       
       if ($truthy(self.locked)) {
-        self.$raise($$($nesting, 'ThreadError'), "Deadlock")};
+        self.$raise($$('ThreadError'), "Deadlock")
+      };
       self.locked = true;
       return self;
-    }, $Mutex_lock$25.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$locked?', $Mutex_locked$ques$26 = function() {
+    $def(self, '$locked?', function $Mutex_locked$ques$7() {
       var self = this;
 
       return self.locked
-    }, $Mutex_locked$ques$26.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$owned?', $Mutex_owned$ques$27 = function() {
+    $def(self, '$owned?', function $Mutex_owned$ques$8() {
       var self = this;
 
       return self.locked
-    }, $Mutex_owned$ques$27.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$try_lock', $Mutex_try_lock$28 = function $$try_lock() {
+    $def(self, '$try_lock', function $$try_lock() {
       var self = this;
 
       if ($truthy(self['$locked?']())) {
@@ -280,23 +265,22 @@ Opal.modules["thread"] = function(Opal) {
         self.$lock();
         return true;
       }
-    }, $Mutex_try_lock$28.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$unlock', $Mutex_unlock$29 = function $$unlock() {
+    $def(self, '$unlock', function $$unlock() {
       var self = this;
 
       
-      if ($truthy(self.locked)) {
-      } else {
-        self.$raise($$($nesting, 'ThreadError'), "Mutex not locked")
+      if (!$truthy(self.locked)) {
+        self.$raise($$('ThreadError'), "Mutex not locked")
       };
       self.locked = false;
       return self;
-    }, $Mutex_unlock$29.$$arity = 0);
-    return (Opal.def(self, '$synchronize', $Mutex_synchronize$30 = function $$synchronize() {
-      var $iter = $Mutex_synchronize$30.$$p, $yield = $iter || nil, self = this;
+    }, 0);
+    return $def(self, '$synchronize', function $$synchronize() {
+      var $yield = $$synchronize.$$p || nil, self = this;
 
-      if ($iter) $Mutex_synchronize$30.$$p = null;
+      delete $$synchronize.$$p;
       
       self.$lock();
       
@@ -305,237 +289,111 @@ Opal.modules["thread"] = function(Opal) {
       } finally {
         self.$unlock()
       }; })();;
-    }, $Mutex_synchronize$30.$$arity = 0), nil) && 'synchronize';
+    }, 0);
   })($nesting[0], null, $nesting);
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["stringio"] = function(Opal) {
-  function $rb_ge(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs >= rhs : lhs['$>='](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $truthy = Opal.truthy, $alias = Opal.alias, $gvars = Opal.gvars;
-
-  Opal.add_stubs(['$include', '$new', '$call', '$close', '$attr_accessor', '$length', '$include?', '$!', '$check_readable', '$==', '$===', '$>=', '$raise', '$>', '$+', '$-', '$seek', '$enum_for', '$eof?', '$ord', '$[]', '$to_str', '$chomp', '$check_writable', '$String', '$write', '$closed_write?', '$closed_read?']);
+Opal.modules["stringio"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $defs = Opal.defs, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def, $eqeqeq = Opal.eqeqeq, $truthy = Opal.truthy, $rb_ge = Opal.rb_ge, $rb_gt = Opal.rb_gt, $rb_plus = Opal.rb_plus, $rb_minus = Opal.rb_minus, $eqeq = Opal.eqeq, $alias = Opal.alias;
+
+  Opal.add_stubs('new,call,close,attr_accessor,check_readable,==,length,===,>=,raise,>,+,-,seek,check_writable,String,[],eof?,write,read');
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'StringIO');
 
-    var $nesting = [self].concat($parent_nesting), $StringIO_open$1, $StringIO_initialize$2, $StringIO_eof$ques$3, $StringIO_seek$4, $StringIO_tell$5, $StringIO_rewind$6, $StringIO_each_byte$7, $StringIO_each_char$8, $StringIO_each$9, $StringIO_write$10, $StringIO_read$11, $StringIO_close$12, $StringIO_close_read$13, $StringIO_close_write$14, $StringIO_closed$ques$15, $StringIO_closed_read$ques$16, $StringIO_closed_write$ques$17, $StringIO_check_writable$18, $StringIO_check_readable$19;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-    self.$$prototype.position = self.$$prototype.string = self.$$prototype.closed = nil;
+    $proto.position = $proto.string = nil;
     
-    self.$include($$$($$($nesting, 'IO'), 'Readable'));
-    self.$include($$$($$($nesting, 'IO'), 'Writable'));
-    Opal.defs(self, '$open', $StringIO_open$1 = function $$open(string, mode) {
-      var $iter = $StringIO_open$1.$$p, block = $iter || nil, self = this, io = nil, res = nil;
+    $defs(self, '$open', function $$open(string, mode) {
+      var block = $$open.$$p || nil, self = this, io = nil, res = nil;
 
-      if ($iter) $StringIO_open$1.$$p = null;
-      
+      delete $$open.$$p;
       
-      if ($iter) $StringIO_open$1.$$p = null;;
+      ;
       
-      if (string == null) {
-        string = "";
-      };
+      if (string == null) string = "";;
       
-      if (mode == null) {
-        mode = nil;
-      };
+      if (mode == null) mode = nil;;
       io = self.$new(string, mode);
       res = block.$call(io);
       io.$close();
       return res;
-    }, $StringIO_open$1.$$arity = -1);
+    }, -1);
     self.$attr_accessor("string");
     
-    Opal.def(self, '$initialize', $StringIO_initialize$2 = function $$initialize(string, mode) {
-      var self = this, $ret_or_1 = nil, $ret_or_2 = nil;
+    $def(self, '$initialize', function $$initialize(string, mode) {
+      var $yield = $$initialize.$$p || nil, self = this;
 
+      delete $$initialize.$$p;
       
       
-      if (string == null) {
-        string = "";
-      };
+      if (string == null) string = "";;
       
-      if (mode == null) {
-        mode = "rw";
-      };
+      if (mode == null) mode = "rw";;
       self.string = string;
-      self.position = string.$length();
-      if ($truthy((function() {if ($truthy(($ret_or_1 = mode['$include?']("r")))) {
-        return mode['$include?']("w")['$!']()
-      } else {
-        return $ret_or_1
-      }; return nil; })())) {
-        return (self.closed = "write")
-      } else if ($truthy((function() {if ($truthy(($ret_or_2 = mode['$include?']("w")))) {
-        return mode['$include?']("r")['$!']()
-      } else {
-        return $ret_or_2
-      }; return nil; })())) {
-        return (self.closed = "read")
-      } else {
-        return nil
-      };
-    }, $StringIO_initialize$2.$$arity = -1);
+      self.position = 0;
+      return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [nil, mode], null);
+    }, -1);
     
-    Opal.def(self, '$eof?', $StringIO_eof$ques$3 = function() {
+    $def(self, '$eof?', function $StringIO_eof$ques$1() {
       var self = this;
 
       
       self.$check_readable();
       return self.position['$=='](self.string.$length());
-    }, $StringIO_eof$ques$3.$$arity = 0);
-    $alias(self, "eof", "eof?");
+    }, 0);
     
-    Opal.def(self, '$seek', $StringIO_seek$4 = function $$seek(pos, whence) {
-      var self = this, $case = nil;
+    $def(self, '$seek', function $$seek(pos, whence) {
+      var self = this, $ret_or_1 = nil;
 
       
       
-      if (whence == null) {
-        whence = $$$($$($nesting, 'IO'), 'SEEK_SET');
-      };
-      $case = whence;
-      if ($$$($$($nesting, 'IO'), 'SEEK_SET')['$===']($case)) {
-      if ($truthy($rb_ge(pos, 0))) {
+      if (whence == null) whence = $$$($$('IO'), 'SEEK_SET');;
+      self.read_buffer = "";
+      if ($eqeqeq($$$($$('IO'), 'SEEK_SET'), ($ret_or_1 = whence))) {
+        
+        if (!$truthy($rb_ge(pos, 0))) {
+          self.$raise($$$($$('Errno'), 'EINVAL'))
+        };
+        self.position = pos;
+      } else if ($eqeqeq($$$($$('IO'), 'SEEK_CUR'), $ret_or_1)) {
+        if ($truthy($rb_gt($rb_plus(self.position, pos), self.string.$length()))) {
+          self.position = self.string.$length()
+        } else {
+          self.position = $rb_plus(self.position, pos)
+        }
+      } else if ($eqeqeq($$$($$('IO'), 'SEEK_END'), $ret_or_1)) {
+        if ($truthy($rb_gt(pos, self.string.$length()))) {
+          self.position = 0
+        } else {
+          self.position = $rb_minus(self.position, pos)
+        }
       } else {
-        self.$raise($$$($$($nesting, 'Errno'), 'EINVAL'))
+        nil
       };
-      self.position = pos;}
-      else if ($$$($$($nesting, 'IO'), 'SEEK_CUR')['$===']($case)) {if ($truthy($rb_gt($rb_plus(self.position, pos), self.string.$length()))) {
-        self.position = self.string.$length()
-      } else {
-        self.position = $rb_plus(self.position, pos)
-      }}
-      else if ($$$($$($nesting, 'IO'), 'SEEK_END')['$===']($case)) {if ($truthy($rb_gt(pos, self.string.$length()))) {
-        self.position = 0
-      } else {
-        self.position = $rb_minus(self.position, pos)
-      }};
       return 0;
-    }, $StringIO_seek$4.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$tell', $StringIO_tell$5 = function $$tell() {
+    $def(self, '$tell', function $$tell() {
       var self = this;
 
       return self.position
-    }, $StringIO_tell$5.$$arity = 0);
-    $alias(self, "pos", "tell");
-    $alias(self, "pos=", "seek");
+    }, 0);
     
-    Opal.def(self, '$rewind', $StringIO_rewind$6 = function $$rewind() {
+    $def(self, '$rewind', function $$rewind() {
       var self = this;
 
       return self.$seek(0)
-    }, $StringIO_rewind$6.$$arity = 0);
-    
-    Opal.def(self, '$each_byte', $StringIO_each_byte$7 = function $$each_byte() {
-      var $iter = $StringIO_each_byte$7.$$p, block = $iter || nil, $a, self = this, i = nil;
-
-      if ($iter) $StringIO_each_byte$7.$$p = null;
-      
-      
-      if ($iter) $StringIO_each_byte$7.$$p = null;;
-      if ($truthy(block)) {
-      } else {
-        return self.$enum_for("each_byte")
-      };
-      self.$check_readable();
-      i = self.position;
-      while (!($truthy(self['$eof?']()))) {
-        
-        block.$call(self.string['$[]'](i).$ord());
-        i = $rb_plus(i, 1);
-      };
-      return self;
-    }, $StringIO_each_byte$7.$$arity = 0);
-    
-    Opal.def(self, '$each_char', $StringIO_each_char$8 = function $$each_char() {
-      var $iter = $StringIO_each_char$8.$$p, block = $iter || nil, $a, self = this, i = nil;
-
-      if ($iter) $StringIO_each_char$8.$$p = null;
-      
-      
-      if ($iter) $StringIO_each_char$8.$$p = null;;
-      if ($truthy(block)) {
-      } else {
-        return self.$enum_for("each_char")
-      };
-      self.$check_readable();
-      i = self.position;
-      while (!($truthy(self['$eof?']()))) {
-        
-        block.$call(self.string['$[]'](i));
-        i = $rb_plus(i, 1);
-      };
-      return self;
-    }, $StringIO_each_char$8.$$arity = 0);
-    
-    Opal.def(self, '$each', $StringIO_each$9 = function $$each(separator) {
-      var $iter = $StringIO_each$9.$$p, $yield = $iter || nil, self = this, chomp_lines = nil;
-      if ($gvars["/"] == null) $gvars["/"] = nil;
-
-      if ($iter) $StringIO_each$9.$$p = null;
-      
-      
-      if (separator == null) {
-        separator = $gvars["/"];
-      };
-      if (($yield !== nil)) {
-      } else {
-        return self.$enum_for("each_line")
-      };
-      self.$check_readable();
-      chomp_lines = false;
-      if ($truthy($$$('::', 'Hash')['$==='](separator))) {
-        separator = (function() {if ($truthy((chomp_lines = separator['$[]']("chomp")))) {
-          return /\r?\n/
-        } else {
-          return $gvars["/"]
-        }; return nil; })()
-      } else if ($truthy(separator)) {
-        separator = separator.$to_str()
-      } else {
-        separator = undefined
-      };
-      
-      var str = self.string, stringLength = str.length;
-      if (self.position < stringLength) str = str.substr(self.position);
-      if (separator) {
-        var chomped = (str).$chomp(), trailing = str.length !== chomped.length, splitted = chomped.split(separator);
-        for (var i = 0, len = splitted.length; i < len; i++) {
-          var line = chomp_lines ? splitted[i] : (i < len - 1 || trailing ? splitted[i] + separator : splitted[i]);
-          Opal.yield1($yield, line);
-        }
-      } else if (separator === undefined) {
-        Opal.yield1($yield, str);
-      } else {
-        var m, re = /(.+(?:\n\n|$))\n*/g;
-        while ((m = re.exec(str))) Opal.yield1($yield, m[1]);
-      }
-      self.position = stringLength;
-    ;
-      return self;
-    }, $StringIO_each$9.$$arity = -1);
-    $alias(self, "each_line", "each");
+    }, 0);
     
-    Opal.def(self, '$write', $StringIO_write$10 = function $$write(string) {
+    $def(self, '$write', function $$write(string) {
       var self = this, before = nil, after = nil;
 
       
       self.$check_writable();
+      self.read_buffer = "";
       string = self.$String(string);
-      if (self.string.$length()['$=='](self.position)) {
+      if ($eqeq(self.string.$length(), self.position)) {
         
         self.string = $rb_plus(self.string, string);
         return (self.position = $rb_plus(self.position, string.$length()));
@@ -546,239 +404,121 @@ Opal.modules["stringio"] = function(Opal) {
         self.string = $rb_plus($rb_plus(before, string), after);
         return (self.position = $rb_plus(self.position, string.$length()));
       };
-    }, $StringIO_write$10.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$read', $StringIO_read$11 = function $$read(length, outbuf) {
+    $def(self, '$read', function $$read(length, outbuf) {
       var self = this, string = nil, str = nil;
 
       
       
-      if (length == null) {
-        length = nil;
-      };
+      if (length == null) length = nil;;
       
-      if (outbuf == null) {
-        outbuf = nil;
-      };
+      if (outbuf == null) outbuf = nil;;
       self.$check_readable();
       if ($truthy(self['$eof?']())) {
-        return nil};
-      string = (function() {if ($truthy(length)) {
-        
-        str = self.string['$[]'](self.position, length);
-        self.position = $rb_plus(self.position, length);
-        return str;
-      } else {
-        
-        str = self.string['$[]'](Opal.Range.$new(self.position, -1, false));
-        self.position = self.string.$length();
-        return str;
-      }; return nil; })();
+        return nil
+      };
+      string = ($truthy(length) ? (((str = self.string['$[]'](self.position, length)), (self.position = $rb_plus(self.position, length)), ($truthy($rb_gt(self.position, self.string.$length())) ? ((self.position = self.string.$length())) : nil), str)) : (((str = self.string['$[]'](Opal.Range.$new(self.position, -1, false))), (self.position = self.string.$length()), str)));
       if ($truthy(outbuf)) {
         return outbuf.$write(string)
       } else {
         return string
       };
-    }, $StringIO_read$11.$$arity = -1);
-    
-    Opal.def(self, '$close', $StringIO_close$12 = function $$close() {
-      var self = this;
-
-      return (self.closed = "both")
-    }, $StringIO_close$12.$$arity = 0);
-    
-    Opal.def(self, '$close_read', $StringIO_close_read$13 = function $$close_read() {
-      var self = this;
-
-      if (self.closed['$==']("write")) {
-        return (self.closed = "both")
-      } else {
-        return (self.closed = "read")
-      }
-    }, $StringIO_close_read$13.$$arity = 0);
-    
-    Opal.def(self, '$close_write', $StringIO_close_write$14 = function $$close_write() {
-      var self = this;
-
-      if (self.closed['$==']("read")) {
-        return (self.closed = "both")
-      } else {
-        return (self.closed = "write")
-      }
-    }, $StringIO_close_write$14.$$arity = 0);
-    
-    Opal.def(self, '$closed?', $StringIO_closed$ques$15 = function() {
-      var self = this;
-
-      return self.closed['$==']("both")
-    }, $StringIO_closed$ques$15.$$arity = 0);
-    
-    Opal.def(self, '$closed_read?', $StringIO_closed_read$ques$16 = function() {
-      var self = this, $ret_or_3 = nil;
-
-      if ($truthy(($ret_or_3 = self.closed['$==']("read")))) {
-        return $ret_or_3
-      } else {
-        return self.closed['$==']("both")
-      }
-    }, $StringIO_closed_read$ques$16.$$arity = 0);
+    }, -1);
     
-    Opal.def(self, '$closed_write?', $StringIO_closed_write$ques$17 = function() {
-      var self = this, $ret_or_4 = nil;
-
-      if ($truthy(($ret_or_4 = self.closed['$==']("write")))) {
-        return $ret_or_4
-      } else {
-        return self.closed['$==']("both")
-      }
-    }, $StringIO_closed_write$ques$17.$$arity = 0);
-    
-    Opal.def(self, '$check_writable', $StringIO_check_writable$18 = function $$check_writable() {
-      var self = this;
-
-      if ($truthy(self['$closed_write?']())) {
-        return self.$raise($$($nesting, 'IOError'), "not opened for writing")
-      } else {
-        return nil
-      }
-    }, $StringIO_check_writable$18.$$arity = 0);
-    return (Opal.def(self, '$check_readable', $StringIO_check_readable$19 = function $$check_readable() {
+    $def(self, '$sysread', function $$sysread(length) {
       var self = this;
 
-      if ($truthy(self['$closed_read?']())) {
-        return self.$raise($$($nesting, 'IOError'), "not opened for reading")
-      } else {
-        return nil
-      }
-    }, $StringIO_check_readable$19.$$arity = 0), nil) && 'check_readable';
-  })($nesting[0], $$($nesting, 'IO'), $nesting)
+      
+      self.$check_readable();
+      return self.$read(length);
+    }, 1);
+    $alias(self, "eof", "eof?");
+    $alias(self, "pos", "tell");
+    $alias(self, "pos=", "seek");
+    return $alias(self, "readpartial", "read");
+  })($nesting[0], $$('IO'), $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["prettyprint"] = function(Opal) {
-  function $rb_times(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs * rhs : lhs['$*'](rhs);
-  }
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy;
-
-  Opal.add_stubs(['$dup', '$lambda', '$*', '$new', '$to_proc', '$flush', '$attr_reader', '$last', '$<', '$+', '$deq', '$empty?', '$breakables', '$shift', '$output', '$-', '$width', '$!', '$===', '$first', '$length', '$<<', '$add', '$break_outmost_groups', '$group', '$breakable', '$break?', '$call', '$text', '$group_sub', '$nest', '$depth', '$push', '$enq', '$pop', '$delete', '$each', '$clear', '$indent', '$current_group', '$newline', '$genspace', '$group_queue', '$[]', '$downto', '$slice!', '$break', '$[]=']);
+Opal.modules["prettyprint"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $klass = Opal.klass, $send = Opal.send, $rb_times = Opal.rb_times, $defs = Opal.defs, $truthy = Opal.truthy, $def = Opal.def, $rb_lt = Opal.rb_lt, $rb_plus = Opal.rb_plus, $rb_minus = Opal.rb_minus, $eqeqeq = Opal.eqeqeq, $to_a = Opal.to_a;
+
+  Opal.add_stubs('dup,lambda,*,new,to_proc,flush,attr_reader,last,<,+,deq,empty?,breakables,shift,output,-,width,!,===,first,length,<<,add,break_outmost_groups,group,breakable,break?,call,text,group_sub,nest,depth,push,enq,pop,delete,each,clear,indent,current_group,newline,genspace,group_queue,[],downto,slice!,break,[]=');
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'PrettyPrint');
 
-    var $nesting = [self].concat($parent_nesting), $PrettyPrint_format$1, $PrettyPrint_singleline_format$3, $PrettyPrint_initialize$4, $PrettyPrint_current_group$6, $PrettyPrint_break_outmost_groups$7, $PrettyPrint_text$8, $PrettyPrint_fill_breakable$9, $PrettyPrint_breakable$11, $PrettyPrint_group$12, $PrettyPrint_group_sub$15, $PrettyPrint_nest$16, $PrettyPrint_flush$17;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-    self.$$prototype.group_stack = self.$$prototype.maxwidth = self.$$prototype.output_width = self.$$prototype.buffer_width = self.$$prototype.group_queue = self.$$prototype.buffer = self.$$prototype.output = self.$$prototype.newline = self.$$prototype.genspace = self.$$prototype.indent = nil;
+    $proto.group_stack = $proto.maxwidth = $proto.output_width = $proto.buffer_width = $proto.group_queue = $proto.buffer = $proto.output = $proto.newline = $proto.genspace = $proto.indent = nil;
     
-    Opal.defs($$($nesting, 'PrettyPrint'), '$format', $PrettyPrint_format$1 = function $$format(output, maxwidth, newline, genspace) {
-      var $$2, $iter = $PrettyPrint_format$1.$$p, $yield = $iter || nil, self = this, q = nil;
+    $defs($$('PrettyPrint'), '$format', function $$format(output, maxwidth, newline, genspace) {
+      var $yield = $$format.$$p || nil, self = this, q = nil;
 
-      if ($iter) $PrettyPrint_format$1.$$p = null;
+      delete $$format.$$p;
       
       
-      if (output == null) {
-        output = "".$dup();
-      };
+      if (output == null) output = "".$dup();;
       
-      if (maxwidth == null) {
-        maxwidth = 79;
-      };
+      if (maxwidth == null) maxwidth = 79;;
       
-      if (newline == null) {
-        newline = "\n";
-      };
+      if (newline == null) newline = "\n";;
       
-      if (genspace == null) {
-        genspace = $send(self, 'lambda', [], ($$2 = function(n){var self = $$2.$$s == null ? this : $$2.$$s;
-
+      if (genspace == null) genspace = $send(self, 'lambda', [], function $$1(n){
         
         
-        if (n == null) {
-          n = nil;
-        };
-        return $rb_times(" ", n);}, $$2.$$s = self, $$2.$$arity = 1, $$2));
-      };
-      q = $send($$($nesting, 'PrettyPrint'), 'new', [output, maxwidth, newline], genspace.$to_proc());
+        if (n == null) n = nil;;
+        return $rb_times(" ", n);}, 1);;
+      q = $send($$('PrettyPrint'), 'new', [output, maxwidth, newline], genspace.$to_proc());
       Opal.yield1($yield, q);
       q.$flush();
       return output;
-    }, $PrettyPrint_format$1.$$arity = -1);
-    Opal.defs($$($nesting, 'PrettyPrint'), '$singleline_format', $PrettyPrint_singleline_format$3 = function $$singleline_format(output, maxwidth, newline, genspace) {
-      var $iter = $PrettyPrint_singleline_format$3.$$p, $yield = $iter || nil, self = this, q = nil;
+    }, -1);
+    $defs($$('PrettyPrint'), '$singleline_format', function $$singleline_format(output, maxwidth, newline, genspace) {
+      var $yield = $$singleline_format.$$p || nil, q = nil;
 
-      if ($iter) $PrettyPrint_singleline_format$3.$$p = null;
+      delete $$singleline_format.$$p;
       
       
-      if (output == null) {
-        output = "".$dup();
-      };
+      if (output == null) output = "".$dup();;
       
-      if (maxwidth == null) {
-        maxwidth = nil;
-      };
+      if (maxwidth == null) maxwidth = nil;;
       
-      if (newline == null) {
-        newline = nil;
-      };
+      if (newline == null) newline = nil;;
       
-      if (genspace == null) {
-        genspace = nil;
-      };
-      q = $$($nesting, 'SingleLine').$new(output);
+      if (genspace == null) genspace = nil;;
+      q = $$('SingleLine').$new(output);
       Opal.yield1($yield, q);
       return output;
-    }, $PrettyPrint_singleline_format$3.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$initialize', $PrettyPrint_initialize$4 = function $$initialize(output, maxwidth, newline) {
-      var $iter = $PrettyPrint_initialize$4.$$p, genspace = $iter || nil, $$5, self = this, $ret_or_1 = nil, root_group = nil;
+    $def(self, '$initialize', function $$initialize(output, maxwidth, newline) {
+      var genspace = $$initialize.$$p || nil, self = this, $ret_or_1 = nil, root_group = nil;
 
-      if ($iter) $PrettyPrint_initialize$4.$$p = null;
+      delete $$initialize.$$p;
       
+      ;
       
-      if ($iter) $PrettyPrint_initialize$4.$$p = null;;
+      if (output == null) output = "".$dup();;
       
-      if (output == null) {
-        output = "".$dup();
-      };
+      if (maxwidth == null) maxwidth = 79;;
       
-      if (maxwidth == null) {
-        maxwidth = 79;
-      };
-      
-      if (newline == null) {
-        newline = "\n";
-      };
+      if (newline == null) newline = "\n";;
       self.output = output;
       self.maxwidth = maxwidth;
       self.newline = newline;
-      self.genspace = (function() {if ($truthy(($ret_or_1 = genspace))) {
-        return $ret_or_1
-      } else {
-        return $send(self, 'lambda', [], ($$5 = function(n){var self = $$5.$$s == null ? this : $$5.$$s;
-
-          
-          
-          if (n == null) {
-            n = nil;
-          };
-          return $rb_times(" ", n);}, $$5.$$s = self, $$5.$$arity = 1, $$5))
-      }; return nil; })();
+      self.genspace = ($truthy(($ret_or_1 = genspace)) ? ($ret_or_1) : ($send(self, 'lambda', [], function $$2(n){
+        
+        
+        if (n == null) n = nil;;
+        return $rb_times(" ", n);}, 1)));
       self.output_width = 0;
       self.buffer_width = 0;
       self.buffer = [];
-      root_group = $$($nesting, 'Group').$new(0);
+      root_group = $$('Group').$new(0);
       self.group_stack = [root_group];
-      self.group_queue = $$($nesting, 'GroupQueue').$new(root_group);
+      self.group_queue = $$('GroupQueue').$new(root_group);
       return (self.indent = 0);
-    }, $PrettyPrint_initialize$4.$$arity = -1);
+    }, -1);
     self.$attr_reader("output");
     self.$attr_reader("maxwidth");
     self.$attr_reader("newline");
@@ -786,19 +526,18 @@ Opal.modules["prettyprint"] = function(Opal) {
     self.$attr_reader("indent");
     self.$attr_reader("group_queue");
     
-    Opal.def(self, '$current_group', $PrettyPrint_current_group$6 = function $$current_group() {
+    $def(self, '$current_group', function $$current_group() {
       var self = this;
 
       return self.group_stack.$last()
-    }, $PrettyPrint_current_group$6.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$break_outmost_groups', $PrettyPrint_break_outmost_groups$7 = function $$break_outmost_groups() {
-      var $a, $b, self = this, group = nil, data = nil, $ret_or_2 = nil, text = nil;
+    $def(self, '$break_outmost_groups', function $$break_outmost_groups() {
+      var $a, $b, self = this, group = nil, data = nil, $ret_or_1 = nil, text = nil;
 
       while ($truthy($rb_lt(self.maxwidth, $rb_plus(self.output_width, self.buffer_width)))) {
         
-        if ($truthy((group = self.group_queue.$deq()))) {
-        } else {
+        if (!$truthy((group = self.group_queue.$deq()))) {
           return nil
         };
         while (!($truthy(group.$breakables()['$empty?']()))) {
@@ -807,27 +546,21 @@ Opal.modules["prettyprint"] = function(Opal) {
           self.output_width = data.$output(self.output, self.output_width);
           self.buffer_width = $rb_minus(self.buffer_width, data.$width());
         };
-        while ($truthy((function() {if ($truthy(($ret_or_2 = self.buffer['$empty?']()['$!']()))) {
-          return $$($nesting, 'Text')['$==='](self.buffer.$first())
-        } else {
-          return $ret_or_2
-        }; return nil; })())) {
+        while ($truthy(($truthy(($ret_or_1 = self.buffer['$empty?']()['$!']())) ? ($$('Text')['$==='](self.buffer.$first())) : ($ret_or_1)))) {
           
           text = self.buffer.$shift();
           self.output_width = text.$output(self.output, self.output_width);
           self.buffer_width = $rb_minus(self.buffer_width, text.$width());
         };
       }
-    }, $PrettyPrint_break_outmost_groups$7.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$text', $PrettyPrint_text$8 = function $$text(obj, width) {
+    $def(self, '$text', function $$text(obj, width) {
       var self = this, text = nil;
 
       
       
-      if (width == null) {
-        width = obj.$length();
-      };
+      if (width == null) width = obj.$length();;
       if ($truthy(self.buffer['$empty?']())) {
         
         self.output['$<<'](obj);
@@ -835,47 +568,38 @@ Opal.modules["prettyprint"] = function(Opal) {
       } else {
         
         text = self.buffer.$last();
-        if ($truthy($$($nesting, 'Text')['$==='](text))) {
-        } else {
+        if (!$eqeqeq($$('Text'), text)) {
           
-          text = $$($nesting, 'Text').$new();
+          text = $$('Text').$new();
           self.buffer['$<<'](text);
         };
         text.$add(obj, width);
         self.buffer_width = $rb_plus(self.buffer_width, width);
         return self.$break_outmost_groups();
       };
-    }, $PrettyPrint_text$8.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$fill_breakable', $PrettyPrint_fill_breakable$9 = function $$fill_breakable(sep, width) {
-      var $$10, self = this;
+    $def(self, '$fill_breakable', function $$fill_breakable(sep, width) {
+      var self = this;
 
       
       
-      if (sep == null) {
-        sep = " ";
-      };
+      if (sep == null) sep = " ";;
       
-      if (width == null) {
-        width = sep.$length();
-      };
-      return $send(self, 'group', [], ($$10 = function(){var self = $$10.$$s == null ? this : $$10.$$s;
+      if (width == null) width = sep.$length();;
+      return $send(self, 'group', [], function $$3(){var self = $$3.$$s == null ? this : $$3.$$s;
 
-        return self.$breakable(sep, width)}, $$10.$$s = self, $$10.$$arity = 0, $$10));
-    }, $PrettyPrint_fill_breakable$9.$$arity = -1);
+        return self.$breakable(sep, width)}, {$$arity: 0, $$s: self});
+    }, -1);
     
-    Opal.def(self, '$breakable', $PrettyPrint_breakable$11 = function $$breakable(sep, width) {
+    $def(self, '$breakable', function $$breakable(sep, width) {
       var self = this, group = nil;
 
       
       
-      if (sep == null) {
-        sep = " ";
-      };
+      if (sep == null) sep = " ";;
       
-      if (width == null) {
-        width = sep.$length();
-      };
+      if (width == null) width = sep.$length();;
       group = self.group_stack.$last();
       if ($truthy(group['$break?']())) {
         
@@ -886,70 +610,55 @@ Opal.modules["prettyprint"] = function(Opal) {
         return (self.buffer_width = 0);
       } else {
         
-        self.buffer['$<<']($$($nesting, 'Breakable').$new(sep, width, self));
+        self.buffer['$<<']($$('Breakable').$new(sep, width, self));
         self.buffer_width = $rb_plus(self.buffer_width, width);
         return self.$break_outmost_groups();
       };
-    }, $PrettyPrint_breakable$11.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$group', $PrettyPrint_group$12 = function $$group(indent, open_obj, close_obj, open_width, close_width) {
-      var $$13, $iter = $PrettyPrint_group$12.$$p, $yield = $iter || nil, self = this;
+    $def(self, '$group', function $$group(indent, open_obj, close_obj, open_width, close_width) {
+      var $yield = $$group.$$p || nil, self = this;
 
-      if ($iter) $PrettyPrint_group$12.$$p = null;
+      delete $$group.$$p;
       
       
-      if (indent == null) {
-        indent = 0;
-      };
+      if (indent == null) indent = 0;;
       
-      if (open_obj == null) {
-        open_obj = "";
-      };
+      if (open_obj == null) open_obj = "";;
       
-      if (close_obj == null) {
-        close_obj = "";
-      };
+      if (close_obj == null) close_obj = "";;
       
-      if (open_width == null) {
-        open_width = open_obj.$length();
-      };
+      if (open_width == null) open_width = open_obj.$length();;
       
-      if (close_width == null) {
-        close_width = close_obj.$length();
-      };
+      if (close_width == null) close_width = close_obj.$length();;
       self.$text(open_obj, open_width);
-      $send(self, 'group_sub', [], ($$13 = function(){var self = $$13.$$s == null ? this : $$13.$$s, $$14;
-
-        return $send(self, 'nest', [indent], ($$14 = function(){var self = $$14.$$s == null ? this : $$14.$$s;
+      $send(self, 'group_sub', [], function $$4(){var self = $$4.$$s == null ? this : $$4.$$s;
 
-          return Opal.yieldX($yield, []);}, $$14.$$s = self, $$14.$$arity = 0, $$14))}, $$13.$$s = self, $$13.$$arity = 0, $$13));
+        return $send(self, 'nest', [indent], function $$5(){
+          return Opal.yieldX($yield, []);}, 0)}, {$$arity: 0, $$s: self});
       return self.$text(close_obj, close_width);
-    }, $PrettyPrint_group$12.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$group_sub', $PrettyPrint_group_sub$15 = function $$group_sub() {
-      var $iter = $PrettyPrint_group_sub$15.$$p, $yield = $iter || nil, self = this, group = nil;
+    $def(self, '$group_sub', function $$group_sub() {
+      var $yield = $$group_sub.$$p || nil, self = this, group = nil;
 
-      if ($iter) $PrettyPrint_group_sub$15.$$p = null;
+      delete $$group_sub.$$p;
       
-      group = $$($nesting, 'Group').$new($rb_plus(self.group_stack.$last().$depth(), 1));
+      group = $$('Group').$new($rb_plus(self.group_stack.$last().$depth(), 1));
       self.group_stack.$push(group);
       self.group_queue.$enq(group);
       
       return (function() { try {
       return Opal.yieldX($yield, []);
       } finally {
-        (self.group_stack.$pop(), (function() {if ($truthy(group.$breakables()['$empty?']())) {
-          return self.group_queue.$delete(group)
-        } else {
-          return nil
-        }; return nil; })())
+        (self.group_stack.$pop(), ($truthy(group.$breakables()['$empty?']()) ? (self.group_queue.$delete(group)) : nil))
       }; })();;
-    }, $PrettyPrint_group_sub$15.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$nest', $PrettyPrint_nest$16 = function $$nest(indent) {
-      var $iter = $PrettyPrint_nest$16.$$p, $yield = $iter || nil, self = this;
+    $def(self, '$nest', function $$nest(indent) {
+      var $yield = $$nest.$$p || nil, self = this;
 
-      if ($iter) $PrettyPrint_nest$16.$$p = null;
+      delete $$nest.$$p;
       
       self.indent = $rb_plus(self.indent, indent);
       
@@ -958,73 +667,68 @@ Opal.modules["prettyprint"] = function(Opal) {
       } finally {
         (self.indent = $rb_minus(self.indent, indent))
       }; })();;
-    }, $PrettyPrint_nest$16.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$flush', $PrettyPrint_flush$17 = function $$flush() {
-      var $$18, self = this;
+    $def(self, '$flush', function $$flush() {
+      var self = this;
 
       
-      $send(self.buffer, 'each', [], ($$18 = function(data){var self = $$18.$$s == null ? this : $$18.$$s;
+      $send(self.buffer, 'each', [], function $$6(data){var self = $$6.$$s == null ? this : $$6.$$s;
         if (self.output == null) self.output = nil;
         if (self.output_width == null) self.output_width = nil;
 
         
         
-        if (data == null) {
-          data = nil;
-        };
-        return (self.output_width = data.$output(self.output, self.output_width));}, $$18.$$s = self, $$18.$$arity = 1, $$18));
+        if (data == null) data = nil;;
+        return (self.output_width = data.$output(self.output, self.output_width));}, {$$arity: 1, $$s: self});
       self.buffer.$clear();
       return (self.buffer_width = 0);
-    }, $PrettyPrint_flush$17.$$arity = 0);
-    (function($base, $super, $parent_nesting) {
+    }, 0);
+    (function($base, $super) {
       var self = $klass($base, $super, 'Text');
 
-      var $nesting = [self].concat($parent_nesting), $Text_initialize$19, $Text_output$20, $Text_add$22;
+      var $proto = self.$$prototype;
 
-      self.$$prototype.objs = self.$$prototype.width = nil;
+      $proto.objs = $proto.width = nil;
       
       
-      Opal.def(self, '$initialize', $Text_initialize$19 = function $$initialize() {
+      $def(self, '$initialize', function $$initialize() {
         var self = this;
 
         
         self.objs = [];
         return (self.width = 0);
-      }, $Text_initialize$19.$$arity = 0);
+      }, 0);
       self.$attr_reader("width");
       
-      Opal.def(self, '$output', $Text_output$20 = function $$output(out, output_width) {
-        var $$21, self = this;
+      $def(self, '$output', function $$output(out, output_width) {
+        var self = this;
 
         
-        $send(self.objs, 'each', [], ($$21 = function(obj){var self = $$21.$$s == null ? this : $$21.$$s;
-
+        $send(self.objs, 'each', [], function $$7(obj){
           
           
-          if (obj == null) {
-            obj = nil;
-          };
-          return out['$<<'](obj);}, $$21.$$s = self, $$21.$$arity = 1, $$21));
+          if (obj == null) obj = nil;;
+          return out['$<<'](obj);}, 1);
         return $rb_plus(output_width, self.width);
-      }, $Text_output$20.$$arity = 2);
-      return (Opal.def(self, '$add', $Text_add$22 = function $$add(obj, width) {
+      }, 2);
+      return $def(self, '$add', function $$add(obj, width) {
         var self = this;
 
         
         self.objs['$<<'](obj);
         return (self.width = $rb_plus(self.width, width));
-      }, $Text_add$22.$$arity = 2), nil) && 'add';
-    })($nesting[0], null, $nesting);
-    (function($base, $super, $parent_nesting) {
+      }, 2);
+    })($nesting[0], null);
+    (function($base, $super) {
       var self = $klass($base, $super, 'Breakable');
 
-      var $nesting = [self].concat($parent_nesting), $Breakable_initialize$23, $Breakable_output$24;
+      var $proto = self.$$prototype;
 
-      self.$$prototype.group = self.$$prototype.pp = self.$$prototype.indent = self.$$prototype.obj = self.$$prototype.width = nil;
+      $proto.group = $proto.pp = $proto.indent = $proto.obj = $proto.width = nil;
       
       
-      Opal.def(self, '$initialize', $Breakable_initialize$23 = function $$initialize(sep, width, q) {
+      $def(self, '$initialize', function $$initialize(sep, width, q) {
         var self = this;
 
         
@@ -1034,11 +738,11 @@ Opal.modules["prettyprint"] = function(Opal) {
         self.indent = q.$indent();
         self.group = q.$current_group();
         return self.group.$breakables().$push(self);
-      }, $Breakable_initialize$23.$$arity = 3);
+      }, 3);
       self.$attr_reader("obj");
       self.$attr_reader("width");
       self.$attr_reader("indent");
-      return (Opal.def(self, '$output', $Breakable_output$24 = function $$output(out, output_width) {
+      return $def(self, '$output', function $$output(out, output_width) {
         var self = this;
 
         
@@ -1051,43 +755,44 @@ Opal.modules["prettyprint"] = function(Opal) {
         } else {
           
           if ($truthy(self.group.$breakables()['$empty?']())) {
-            self.pp.$group_queue().$delete(self.group)};
+            self.pp.$group_queue().$delete(self.group)
+          };
           out['$<<'](self.obj);
           return $rb_plus(output_width, self.width);
         };
-      }, $Breakable_output$24.$$arity = 2), nil) && 'output';
-    })($nesting[0], null, $nesting);
-    (function($base, $super, $parent_nesting) {
+      }, 2);
+    })($nesting[0], null);
+    (function($base, $super) {
       var self = $klass($base, $super, 'Group');
 
-      var $nesting = [self].concat($parent_nesting), $Group_initialize$25, $Group_break$26, $Group_break$ques$27, $Group_first$ques$28;
+      var $proto = self.$$prototype;
 
-      self.$$prototype["break"] = nil;
+      $proto["break"] = nil;
       
       
-      Opal.def(self, '$initialize', $Group_initialize$25 = function $$initialize(depth) {
+      $def(self, '$initialize', function $$initialize(depth) {
         var self = this;
 
         
         self.depth = depth;
         self.breakables = [];
         return (self["break"] = false);
-      }, $Group_initialize$25.$$arity = 1);
+      }, 1);
       self.$attr_reader("depth");
       self.$attr_reader("breakables");
       
-      Opal.def(self, '$break', $Group_break$26 = function() {
+      $def(self, '$break', function $Group_break$8() {
         var self = this;
 
         return (self["break"] = true)
-      }, $Group_break$26.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$break?', $Group_break$ques$27 = function() {
+      $def(self, '$break?', function $Group_break$ques$9() {
         var self = this;
 
         return self["break"]
-      }, $Group_break$ques$27.$$arity = 0);
-      return (Opal.def(self, '$first?', $Group_first$ques$28 = function() {
+      }, 0);
+      return $def(self, '$first?', function $Group_first$ques$10() {
         var $a, self = this;
 
         if ($truthy((($a = self['first'], $a != null && $a !== nil) ? 'instance-variable' : nil))) {
@@ -1097,36 +802,34 @@ Opal.modules["prettyprint"] = function(Opal) {
           self.first = false;
           return true;
         }
-      }, $Group_first$ques$28.$$arity = 0), nil) && 'first?';
-    })($nesting[0], null, $nesting);
-    (function($base, $super, $parent_nesting) {
+      }, 0);
+    })($nesting[0], null);
+    (function($base, $super) {
       var self = $klass($base, $super, 'GroupQueue');
 
-      var $nesting = [self].concat($parent_nesting), $GroupQueue_initialize$29, $GroupQueue_enq$31, $GroupQueue_deq$32, $GroupQueue_delete$36;
+      var $proto = self.$$prototype;
 
-      self.$$prototype.queue = nil;
+      $proto.queue = nil;
       
       
-      Opal.def(self, '$initialize', $GroupQueue_initialize$29 = function $$initialize($a) {
-        var $post_args, groups, $$30, self = this;
+      $def(self, '$initialize', function $$initialize($a) {
+        var $post_args, groups, self = this;
 
         
         
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
+        $post_args = Opal.slice.call(arguments);
         
         groups = $post_args;;
         self.queue = [];
-        return $send(groups, 'each', [], ($$30 = function(g){var self = $$30.$$s == null ? this : $$30.$$s;
+        return $send(groups, 'each', [], function $$11(g){var self = $$11.$$s == null ? this : $$11.$$s;
 
           
           
-          if (g == null) {
-            g = nil;
-          };
-          return self.$enq(g);}, $$30.$$s = self, $$30.$$arity = 1, $$30));
-      }, $GroupQueue_initialize$29.$$arity = -1);
+          if (g == null) g = nil;;
+          return self.$enq(g);}, {$$arity: 1, $$s: self});
+      }, -1);
       
-      Opal.def(self, '$enq', $GroupQueue_enq$31 = function $$enq(group) {
+      $def(self, '$enq', function $$enq(group) {
         var $a, self = this, depth = nil;
 
         
@@ -1135,27 +838,22 @@ Opal.modules["prettyprint"] = function(Opal) {
           self.queue['$<<']([])
         };
         return self.queue['$[]'](depth)['$<<'](group);
-      }, $GroupQueue_enq$31.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$deq', $GroupQueue_deq$32 = function $$deq() {try {
+      $def(self, '$deq', function $$deq() {try {
 
-        var $$33, self = this;
+        var self = this;
 
         
-        $send(self.queue, 'each', [], ($$33 = function(gs){var self = $$33.$$s == null ? this : $$33.$$s, $$34, $$35;
-
+        $send(self.queue, 'each', [], function $$12(gs){
           
           
-          if (gs == null) {
-            gs = nil;
-          };
-          $send($rb_minus(gs.$length(), 1), 'downto', [0], ($$34 = function(i){var self = $$34.$$s == null ? this : $$34.$$s, group = nil;
+          if (gs == null) gs = nil;;
+          $send($rb_minus(gs.$length(), 1), 'downto', [0], function $$13(i){var group = nil;
 
             
             
-            if (i == null) {
-              i = nil;
-            };
+            if (i == null) i = nil;;
             if ($truthy(gs['$[]'](i).$breakables()['$empty?']())) {
               return nil
             } else {
@@ -1163,151 +861,114 @@ Opal.modules["prettyprint"] = function(Opal) {
               group = gs['$slice!'](i, 1).$first();
               group.$break();
               Opal.ret(group);
-            };}, $$34.$$s = self, $$34.$$arity = 1, $$34));
-          $send(gs, 'each', [], ($$35 = function(group){var self = $$35.$$s == null ? this : $$35.$$s;
-
+            };}, 1);
+          $send(gs, 'each', [], function $$14(group){
             
             
-            if (group == null) {
-              group = nil;
-            };
-            return group.$break();}, $$35.$$s = self, $$35.$$arity = 1, $$35));
-          return gs.$clear();}, $$33.$$s = self, $$33.$$arity = 1, $$33));
+            if (group == null) group = nil;;
+            return group.$break();}, 1);
+          return gs.$clear();}, 1);
         return nil;
         } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
-      }, $GroupQueue_deq$32.$$arity = 0);
-      return (Opal.def(self, '$delete', $GroupQueue_delete$36 = function(group) {
+      }, 0);
+      return $def(self, '$delete', function $GroupQueue_delete$15(group) {
         var self = this;
 
         return self.queue['$[]'](group.$depth()).$delete(group)
-      }, $GroupQueue_delete$36.$$arity = 1), nil) && 'delete';
-    })($nesting[0], null, $nesting);
-    return (function($base, $super, $parent_nesting) {
+      }, 1);
+    })($nesting[0], null);
+    return (function($base, $super) {
       var self = $klass($base, $super, 'SingleLine');
 
-      var $nesting = [self].concat($parent_nesting), $SingleLine_initialize$37, $SingleLine_text$38, $SingleLine_breakable$39, $SingleLine_nest$40, $SingleLine_group$41, $SingleLine_flush$42, $SingleLine_first$ques$43;
+      var $proto = self.$$prototype;
 
-      self.$$prototype.output = self.$$prototype.first = nil;
+      $proto.output = $proto.first = nil;
       
       
-      Opal.def(self, '$initialize', $SingleLine_initialize$37 = function $$initialize(output, maxwidth, newline) {
+      $def(self, '$initialize', function $$initialize(output, maxwidth, newline) {
         var self = this;
 
         
         
-        if (maxwidth == null) {
-          maxwidth = nil;
-        };
+        if (maxwidth == null) maxwidth = nil;;
         
-        if (newline == null) {
-          newline = nil;
-        };
+        if (newline == null) newline = nil;;
         self.output = output;
         return (self.first = [true]);
-      }, $SingleLine_initialize$37.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$text', $SingleLine_text$38 = function $$text(obj, width) {
+      $def(self, '$text', function $$text(obj, width) {
         var self = this;
 
         
         
-        if (width == null) {
-          width = nil;
-        };
+        if (width == null) width = nil;;
         return self.output['$<<'](obj);
-      }, $SingleLine_text$38.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$breakable', $SingleLine_breakable$39 = function $$breakable(sep, width) {
+      $def(self, '$breakable', function $$breakable(sep, width) {
         var self = this;
 
         
         
-        if (sep == null) {
-          sep = " ";
-        };
+        if (sep == null) sep = " ";;
         
-        if (width == null) {
-          width = nil;
-        };
+        if (width == null) width = nil;;
         return self.output['$<<'](sep);
-      }, $SingleLine_breakable$39.$$arity = -1);
+      }, -1);
       
-      Opal.def(self, '$nest', $SingleLine_nest$40 = function $$nest(indent) {
-        var $iter = $SingleLine_nest$40.$$p, $yield = $iter || nil, self = this;
+      $def(self, '$nest', function $$nest(indent) {
+        var $yield = $$nest.$$p || nil;
 
-        if ($iter) $SingleLine_nest$40.$$p = null;
+        delete $$nest.$$p;
         return Opal.yieldX($yield, []);
-      }, $SingleLine_nest$40.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$group', $SingleLine_group$41 = function $$group(indent, open_obj, close_obj, open_width, close_width) {
-        var $iter = $SingleLine_group$41.$$p, $yield = $iter || nil, self = this;
+      $def(self, '$group', function $$group(indent, open_obj, close_obj, open_width, close_width) {
+        var $yield = $$group.$$p || nil, self = this;
 
-        if ($iter) $SingleLine_group$41.$$p = null;
+        delete $$group.$$p;
         
         
-        if (indent == null) {
-          indent = nil;
-        };
+        if (indent == null) indent = nil;;
         
-        if (open_obj == null) {
-          open_obj = "";
-        };
+        if (open_obj == null) open_obj = "";;
         
-        if (close_obj == null) {
-          close_obj = "";
-        };
+        if (close_obj == null) close_obj = "";;
         
-        if (open_width == null) {
-          open_width = nil;
-        };
+        if (open_width == null) open_width = nil;;
         
-        if (close_width == null) {
-          close_width = nil;
-        };
+        if (close_width == null) close_width = nil;;
         self.first.$push(true);
         self.output['$<<'](open_obj);
         Opal.yieldX($yield, []);
         self.output['$<<'](close_obj);
         return self.first.$pop();
-      }, $SingleLine_group$41.$$arity = -1);
+      }, -1);
       
-      Opal.def(self, '$flush', $SingleLine_flush$42 = function $$flush() {
-        var self = this;
-
+      $def(self, '$flush', function $$flush() {
+        
         return nil
-      }, $SingleLine_flush$42.$$arity = 0);
-      return (Opal.def(self, '$first?', $SingleLine_first$ques$43 = function() {
+      }, 0);
+      return $def(self, '$first?', function $SingleLine_first$ques$16() {
         var self = this, result = nil, $writer = nil;
 
         
         result = self.first['$[]'](-1);
         
         $writer = [-1, false];
-        $send(self.first, '[]=', Opal.to_a($writer));
+        $send(self.first, '[]=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $SingleLine_first$ques$43.$$arity = 0), nil) && 'first?';
-    })($nesting[0], null, $nesting);
+      }, 0);
+    })($nesting[0], null);
   })($nesting[0], null, $nesting)
 };
 
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["pp"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_le(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs <= rhs : lhs['$<='](rhs);
-  }
-  var $$59, $$62, self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $gvars = Opal.gvars, $send = Opal.send, $module = Opal.module, $hash2 = Opal.hash2, $truthy = Opal.truthy;
-
-  Opal.add_stubs(['$require', '$new', '$guard_inspect_key', '$pp', '$flush', '$<<', '$bind_call', '$instance_method', '$to_proc', '$attr_accessor', '$==', '$[]', '$current', '$compare_by_identity', '$[]=', '$-', '$include?', '$delete', '$is_a?', '$__getobj__', '$check_inspect_key', '$group', '$pretty_print_cycle', '$push_inspect_key', '$pretty_print', '$sharing_detection', '$pop_inspect_key', '$+', '$name', '$class', '$chomp!', '$text', '$breakable', '$lambda', '$comma_breakable', '$__send__', '$call', '$object_address_group', '$seplist', '$pretty_print_instance_variables', '$===', '$to_s', '$instance_eval', '$include', '$!=', '$owner', '$inspect', '$!', '$respond_to?', '$pp_object', '$sort', '$instance_variables', '$raise', '$singleline_pp', '$dup', '$empty?', '$pp_hash', '$each', '$keys', '$sprintf', '$mcall', '$begin', '$exclude_end?', '$end', '$lines', '$>', '$size', '$named_captures', '$regexp', '$object_group', '$class_eval', '$string', '$<=', '$first', '$module_function']);
+Opal.modules["pp"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $gvars = Opal.gvars, $send = Opal.send, $defs = Opal.defs, $to_a = Opal.to_a, $module = Opal.module, $eqeq = Opal.eqeq, $hash2 = Opal.hash2, $rb_minus = Opal.rb_minus, $def = Opal.def, $truthy = Opal.truthy, $rb_plus = Opal.rb_plus, $eqeqeq = Opal.eqeqeq, $neqeq = Opal.neqeq, $not = Opal.not, $rb_gt = Opal.rb_gt, $rb_le = Opal.rb_le;
+
+  Opal.add_stubs('require,new,guard_inspect_key,pp,flush,<<,bind_call,instance_method,to_proc,attr_accessor,==,[],current,compare_by_identity,[]=,-,include?,delete,text,is_a?,__getobj__,check_inspect_key,group,pretty_print_cycle,push_inspect_key,pretty_print,sharing_detection,pop_inspect_key,+,name,class,chomp,breakable,lambda,comma_breakable,__send__,call,object_address_group,seplist,pretty_print_instance_variables,===,to_s,instance_eval,include,!=,owner,inspect,respond_to?,!,pp_object,sort,instance_variables,raise,singleline_pp,dup,empty?,pp_hash,each,keys,sprintf,mcall,begin,exclude_end?,end,lines,>,size,named_captures,regexp,object_group,class_eval,string,<=,first,module_function');
   
   self.$require("thread");
   self.$require("stringio");
@@ -1315,217 +976,205 @@ Opal.modules["pp"] = function(Opal) {
   (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'PP');
 
-    var $nesting = [self].concat($parent_nesting), $PP_pp$1, $PP_singleline_pp$3, $PP_mcall$5;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
-    Opal.defs($$($nesting, 'PP'), '$pp', $PP_pp$1 = function $$pp(obj, out, width) {
-      var $$2, self = this, q = nil;
+    $defs($$('PP'), '$pp', function $$pp(obj, out, width) {
+      var q = nil;
       if ($gvars.stdout == null) $gvars.stdout = nil;
 
       
       
-      if (out == null) {
-        out = $gvars.stdout;
-      };
+      if (out == null) out = $gvars.stdout;;
       
-      if (width == null) {
-        width = 79;
-      };
-      q = $$($nesting, 'PP').$new(out, width);
-      $send(q, 'guard_inspect_key', [], ($$2 = function(){var self = $$2.$$s == null ? this : $$2.$$s;
-
-        return q.$pp(obj)}, $$2.$$s = self, $$2.$$arity = 0, $$2));
+      if (width == null) width = 79;;
+      q = $$('PP').$new(out, width);
+      $send(q, 'guard_inspect_key', [], function $$1(){
+        return q.$pp(obj)}, 0);
       q.$flush();
       return out['$<<']("\n");
-    }, $PP_pp$1.$$arity = -2);
-    Opal.defs($$($nesting, 'PP'), '$singleline_pp', $PP_singleline_pp$3 = function $$singleline_pp(obj, out) {
-      var $$4, self = this, q = nil;
+    }, -2);
+    $defs($$('PP'), '$singleline_pp', function $$singleline_pp(obj, out) {
+      var q = nil;
       if ($gvars.stdout == null) $gvars.stdout = nil;
 
       
       
-      if (out == null) {
-        out = $gvars.stdout;
-      };
-      q = $$($nesting, 'SingleLine').$new(out);
-      $send(q, 'guard_inspect_key', [], ($$4 = function(){var self = $$4.$$s == null ? this : $$4.$$s;
-
-        return q.$pp(obj)}, $$4.$$s = self, $$4.$$arity = 0, $$4));
+      if (out == null) out = $gvars.stdout;;
+      q = $$('SingleLine').$new(out);
+      $send(q, 'guard_inspect_key', [], function $$2(){
+        return q.$pp(obj)}, 0);
       q.$flush();
       return out;
-    }, $PP_singleline_pp$3.$$arity = -2);
-    Opal.defs($$($nesting, 'PP'), '$mcall', $PP_mcall$5 = function $$mcall(obj, mod, meth, $a) {
-      var $iter = $PP_mcall$5.$$p, block = $iter || nil, $post_args, args, self = this;
+    }, -2);
+    $defs($$('PP'), '$mcall', function $$mcall(obj, mod, meth, $a) {
+      var block = $$mcall.$$p || nil, $post_args, args;
 
-      if ($iter) $PP_mcall$5.$$p = null;
-      
+      delete $$mcall.$$p;
       
-      if ($iter) $PP_mcall$5.$$p = null;;
+      ;
       
-      $post_args = Opal.slice.call(arguments, 3, arguments.length);
+      $post_args = Opal.slice.call(arguments, 3);
       
       args = $post_args;;
-      return $send(mod.$instance_method(meth), 'bind_call', [obj].concat(Opal.to_a(args)), block.$to_proc());
-    }, $PP_mcall$5.$$arity = -4);
+      return $send(mod.$instance_method(meth), 'bind_call', [obj].concat($to_a(args)), block.$to_proc());
+    }, -4);
     self.sharing_detection = false;
     (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting);
-
+      
       return self.$attr_accessor("sharing_detection")
     })(Opal.get_singleton_class(self), $nesting);
     (function($base, $parent_nesting) {
       var self = $module($base, 'PPMethods');
 
-      var $nesting = [self].concat($parent_nesting), $PPMethods_guard_inspect_key$6, $PPMethods_check_inspect_key$7, $PPMethods_push_inspect_key$8, $PPMethods_pop_inspect_key$9, $PPMethods_pp$10, $PPMethods_object_group$13, $PPMethods_object_address_group$14, $PPMethods_comma_breakable$15, $PPMethods_seplist$16, $PPMethods_pp_object$19, $PPMethods_pp_hash$24;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
       
-      Opal.def(self, '$guard_inspect_key', $PPMethods_guard_inspect_key$6 = function $$guard_inspect_key() {
-        var $iter = $PPMethods_guard_inspect_key$6.$$p, $yield = $iter || nil, self = this, $writer = nil, save = nil;
+      $def(self, '$guard_inspect_key', function $$guard_inspect_key() {
+        var $yield = $$guard_inspect_key.$$p || nil, $writer = nil, save = nil;
 
-        if ($iter) $PPMethods_guard_inspect_key$6.$$p = null;
+        delete $$guard_inspect_key.$$p;
         
-        if ($$($nesting, 'Thread').$current()['$[]']("__recursive_key__")['$=='](nil)) {
+        if ($eqeq($$('Thread').$current()['$[]']("__recursive_key__"), nil)) {
           
           $writer = ["__recursive_key__", $hash2([], {}).$compare_by_identity()];
-          $send($$($nesting, 'Thread').$current(), '[]=', Opal.to_a($writer));
-          $writer[$rb_minus($writer["length"], 1)];};
-        if ($$($nesting, 'Thread').$current()['$[]']("__recursive_key__")['$[]']("inspect")['$=='](nil)) {
+          $send($$('Thread').$current(), '[]=', $to_a($writer));
+          $writer[$rb_minus($writer["length"], 1)];
+        };
+        if ($eqeq($$('Thread').$current()['$[]']("__recursive_key__")['$[]']("inspect"), nil)) {
           
           $writer = ["inspect", $hash2([], {}).$compare_by_identity()];
-          $send($$($nesting, 'Thread').$current()['$[]']("__recursive_key__"), '[]=', Opal.to_a($writer));
-          $writer[$rb_minus($writer["length"], 1)];};
-        save = $$($nesting, 'Thread').$current()['$[]']("__recursive_key__")['$[]']("inspect");
+          $send($$('Thread').$current()['$[]']("__recursive_key__"), '[]=', $to_a($writer));
+          $writer[$rb_minus($writer["length"], 1)];
+        };
+        save = $$('Thread').$current()['$[]']("__recursive_key__")['$[]']("inspect");
         
         return (function() { try {
         
         
         $writer = ["inspect", $hash2([], {}).$compare_by_identity()];
-        $send($$($nesting, 'Thread').$current()['$[]']("__recursive_key__"), '[]=', Opal.to_a($writer));
+        $send($$('Thread').$current()['$[]']("__recursive_key__"), '[]=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return Opal.yieldX($yield, []);;
         } finally {
-          (($writer = ["inspect", save]), $send($$($nesting, 'Thread').$current()['$[]']("__recursive_key__"), '[]=', Opal.to_a($writer)), $writer[$rb_minus($writer["length"], 1)])
+          (($writer = ["inspect", save]), $send($$('Thread').$current()['$[]']("__recursive_key__"), '[]=', $to_a($writer)), $writer[$rb_minus($writer["length"], 1)])
         }; })();;
-      }, $PPMethods_guard_inspect_key$6.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$check_inspect_key', $PPMethods_check_inspect_key$7 = function $$check_inspect_key(id) {
-        var self = this, $ret_or_1 = nil, $ret_or_2 = nil;
+      $def(self, '$check_inspect_key', function $$check_inspect_key(id) {
+        var $ret_or_1 = nil, $ret_or_2 = nil;
 
-        if ($truthy(($ret_or_1 = (function() {if ($truthy(($ret_or_2 = $$($nesting, 'Thread').$current()['$[]']("__recursive_key__")))) {
-          return $$($nesting, 'Thread').$current()['$[]']("__recursive_key__")['$[]']("inspect")
-        } else {
-          return $ret_or_2
-        }; return nil; })()))) {
-          return $$($nesting, 'Thread').$current()['$[]']("__recursive_key__")['$[]']("inspect")['$include?'](id)
+        if ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = $$('Thread').$current()['$[]']("__recursive_key__"))) ? ($$('Thread').$current()['$[]']("__recursive_key__")['$[]']("inspect")) : ($ret_or_2))))) {
+          return $$('Thread').$current()['$[]']("__recursive_key__")['$[]']("inspect")['$include?'](id)
         } else {
           return $ret_or_1
         }
-      }, $PPMethods_check_inspect_key$7.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$push_inspect_key', $PPMethods_push_inspect_key$8 = function $$push_inspect_key(id) {
-        var self = this, $writer = nil;
+      $def(self, '$push_inspect_key', function $$push_inspect_key(id) {
+        var $writer = nil;
 
         
         $writer = [id, true];
-        $send($$($nesting, 'Thread').$current()['$[]']("__recursive_key__")['$[]']("inspect"), '[]=', Opal.to_a($writer));
+        $send($$('Thread').$current()['$[]']("__recursive_key__")['$[]']("inspect"), '[]=', $to_a($writer));
         return $writer[$rb_minus($writer["length"], 1)];
-      }, $PPMethods_push_inspect_key$8.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$pop_inspect_key', $PPMethods_pop_inspect_key$9 = function $$pop_inspect_key(id) {
-        var self = this;
-
-        return $$($nesting, 'Thread').$current()['$[]']("__recursive_key__")['$[]']("inspect").$delete(id)
-      }, $PPMethods_pop_inspect_key$9.$$arity = 1);
+      $def(self, '$pop_inspect_key', function $$pop_inspect_key(id) {
+        
+        return $$('Thread').$current()['$[]']("__recursive_key__")['$[]']("inspect").$delete(id)
+      }, 1);
       
-      Opal.def(self, '$pp', $PPMethods_pp$10 = function $$pp(obj) {
-        var $a, $$11, $$12, self = this, $ret_or_3 = nil;
+      $def(self, '$pp', function $$pp(obj) {try {
+
+        var $a, self = this;
 
         
-        if ($truthy((function() {if ($truthy(($ret_or_3 = (($a = $$$('::', 'Delegator', 'skip_raise')) ? 'constant' : nil)))) {
-          return obj['$is_a?']($$$('::', 'Delegator'))
-        } else {
-          return $ret_or_3
-        }; return nil; })())) {
-          obj = obj.$__getobj__()};
+        ;
+        
+        if (obj === null) {
+          self.$text("null")
+          Opal.ret(nil)
+        }
+        else if (obj === undefined) {
+          self.$text("undefined")
+          Opal.ret(nil)
+        }
+        else if (obj.$$class === undefined) {
+          self.$text(Object.prototype.toString.apply(obj))
+          Opal.ret(nil)
+        }
+      ;
+        if (($truthy((($a = $$$('::', 'Delegator', 'skip_raise')) ? 'constant' : nil)) && ($truthy(obj['$is_a?']($$$('Delegator')))))) {
+          obj = obj.$__getobj__()
+        };
         if ($truthy(self.$check_inspect_key(obj))) {
           
-          $send(self, 'group', [], ($$11 = function(){var self = $$11.$$s == null ? this : $$11.$$s;
+          $send(self, 'group', [], function $$3(){var self = $$3.$$s == null ? this : $$3.$$s;
 
-            return obj.$pretty_print_cycle(self)}, $$11.$$s = self, $$11.$$arity = 0, $$11));
-          return nil;};
+            return obj.$pretty_print_cycle(self)}, {$$arity: 0, $$s: self});
+          return nil;
+        };
         
         return (function() { try {
         
         self.$push_inspect_key(obj);
-        return $send(self, 'group', [], ($$12 = function(){var self = $$12.$$s == null ? this : $$12.$$s;
+        return $send(self, 'group', [], function $$4(){var self = $$4.$$s == null ? this : $$4.$$s;
 
-          return obj.$pretty_print(self)}, $$12.$$s = self, $$12.$$arity = 0, $$12));
+          return obj.$pretty_print(self)}, {$$arity: 0, $$s: self});
         } finally {
-          (function() {if ($truthy($$($nesting, 'PP').$sharing_detection())) {
-            return nil
-          } else {
-            return self.$pop_inspect_key(obj)
-          }; return nil; })()
+          ($truthy($$('PP').$sharing_detection()) ? (nil) : (self.$pop_inspect_key(obj)))
         }; })();;
-      }, $PPMethods_pp$10.$$arity = 1);
+        } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
+      }, -1);
       
-      Opal.def(self, '$object_group', $PPMethods_object_group$13 = function $$object_group(obj) {
-        var $iter = $PPMethods_object_group$13.$$p, block = $iter || nil, self = this;
+      $def(self, '$object_group', function $$object_group(obj) {
+        var block = $$object_group.$$p || nil, self = this;
 
-        if ($iter) $PPMethods_object_group$13.$$p = null;
+        delete $$object_group.$$p;
         
-        
-        if ($iter) $PPMethods_object_group$13.$$p = null;;
+        ;
         return $send(self, 'group', [1, $rb_plus("#<", obj.$class().$name()), ">"], block.$to_proc());
-      }, $PPMethods_object_group$13.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$object_address_group', $PPMethods_object_address_group$14 = function $$object_address_group(obj) {
-        var $iter = $PPMethods_object_address_group$14.$$p, block = $iter || nil, self = this, str = nil;
+      $def(self, '$object_address_group', function $$object_address_group(obj) {
+        var block = $$object_address_group.$$p || nil, self = this, str = nil;
 
-        if ($iter) $PPMethods_object_address_group$14.$$p = null;
-        
+        delete $$object_address_group.$$p;
         
-        if ($iter) $PPMethods_object_address_group$14.$$p = null;;
-        str = $$($nesting, 'Kernel').$instance_method("to_s").$bind_call(obj);
-        str['$chomp!'](">");
+        ;
+        str = $$('Kernel').$instance_method("to_s").$bind_call(obj);
+        str = str.$chomp(">");
         return $send(self, 'group', [1, str, ">"], block.$to_proc());
-      }, $PPMethods_object_address_group$14.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$comma_breakable', $PPMethods_comma_breakable$15 = function $$comma_breakable() {
+      $def(self, '$comma_breakable', function $$comma_breakable() {
         var self = this;
 
         
         self.$text(",");
         return self.$breakable();
-      }, $PPMethods_comma_breakable$15.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$seplist', $PPMethods_seplist$16 = function $$seplist(list, sep, iter_method) {
-        var $$17, $$18, $iter = $PPMethods_seplist$16.$$p, $yield = $iter || nil, self = this, $ret_or_4 = nil, first = nil;
+      $def(self, '$seplist', function $$seplist(list, sep, iter_method) {
+        var $yield = $$seplist.$$p || nil, self = this, $ret_or_1 = nil, first = nil;
 
-        if ($iter) $PPMethods_seplist$16.$$p = null;
+        delete $$seplist.$$p;
         
         
-        if (sep == null) {
-          sep = nil;
-        };
+        if (sep == null) sep = nil;;
         
-        if (iter_method == null) {
-          iter_method = "each";
-        };
-        sep = (function() {if ($truthy(($ret_or_4 = sep))) {
-          return $ret_or_4
-        } else {
-          return $send(self, 'lambda', [], ($$17 = function(){var self = $$17.$$s == null ? this : $$17.$$s;
+        if (iter_method == null) iter_method = "each";;
+        sep = ($truthy(($ret_or_1 = sep)) ? ($ret_or_1) : ($send(self, 'lambda', [], function $$5(){var self = $$5.$$s == null ? this : $$5.$$s;
 
-            return self.$comma_breakable()}, $$17.$$s = self, $$17.$$arity = 0, $$17))
-        }; return nil; })();
+          return self.$comma_breakable()}, {$$arity: 0, $$s: self})));
         first = true;
-        return $send(list, '__send__', [iter_method], ($$18 = function($a){var self = $$18.$$s == null ? this : $$18.$$s, $post_args, v;
+        return $send(list, '__send__', [iter_method], function $$6($a){var $post_args, v;
 
           
           
-          $post_args = Opal.slice.call(arguments, 0, arguments.length);
+          $post_args = Opal.slice.call(arguments);
           
           v = $post_args;;
           if ($truthy(first)) {
@@ -1533,343 +1182,291 @@ Opal.modules["pp"] = function(Opal) {
           } else {
             sep.$call()
           };
-          return Opal.yieldX($yield, Opal.to_a(v));;}, $$18.$$s = self, $$18.$$arity = -1, $$18));
-      }, $PPMethods_seplist$16.$$arity = -2);
+          return Opal.yieldX($yield, $to_a(v));;}, -1);
+      }, -2);
       
-      Opal.def(self, '$pp_object', $PPMethods_pp_object$19 = function $$pp_object(obj) {
-        var $$20, self = this;
+      $def(self, '$pp_object', function $$pp_object(obj) {
+        var self = this;
 
-        return $send(self, 'object_address_group', [obj], ($$20 = function(){var self = $$20.$$s == null ? this : $$20.$$s, $$21, $$22;
+        return $send(self, 'object_address_group', [obj], function $$7(){var self = $$7.$$s == null ? this : $$7.$$s;
 
-          return $send(self, 'seplist', [obj.$pretty_print_instance_variables(), $send(self, 'lambda', [], ($$21 = function(){var self = $$21.$$s == null ? this : $$21.$$s;
+          return $send(self, 'seplist', [obj.$pretty_print_instance_variables(), $send(self, 'lambda', [], function $$8(){var self = $$8.$$s == null ? this : $$8.$$s;
 
-            return self.$text(",")}, $$21.$$s = self, $$21.$$arity = 0, $$21))], ($$22 = function(v){var self = $$22.$$s == null ? this : $$22.$$s, $$23;
+            return self.$text(",")}, {$$arity: 0, $$s: self})], function $$9(v){var self = $$9.$$s == null ? this : $$9.$$s;
 
             
             
-            if (v == null) {
-              v = nil;
-            };
+            if (v == null) v = nil;;
             self.$breakable();
-            if ($truthy($$($nesting, 'Symbol')['$==='](v))) {
-              v = v.$to_s()};
+            if ($eqeqeq($$('Symbol'), v)) {
+              v = v.$to_s()
+            };
             self.$text(v);
             self.$text("=");
-            return $send(self, 'group', [1], ($$23 = function(){var self = $$23.$$s == null ? this : $$23.$$s;
+            return $send(self, 'group', [1], function $$10(){var self = $$10.$$s == null ? this : $$10.$$s;
 
               
               self.$breakable("");
-              return self.$pp(obj.$instance_eval(v));}, $$23.$$s = self, $$23.$$arity = 0, $$23));}, $$22.$$s = self, $$22.$$arity = 1, $$22))}, $$20.$$s = self, $$20.$$arity = 0, $$20))
-      }, $PPMethods_pp_object$19.$$arity = 1);
-      return (Opal.def(self, '$pp_hash', $PPMethods_pp_hash$24 = function $$pp_hash(obj) {
-        var $$25, self = this;
+              return self.$pp(obj.$instance_eval(v));}, {$$arity: 0, $$s: self});}, {$$arity: 1, $$s: self})}, {$$arity: 0, $$s: self})
+      }, 1);
+      return $def(self, '$pp_hash', function $$pp_hash(obj) {
+        var self = this;
 
-        return $send(self, 'group', [1, "{", "}"], ($$25 = function(){var self = $$25.$$s == null ? this : $$25.$$s, $$26;
+        return $send(self, 'group', [1, "{", "}"], function $$11(){var self = $$11.$$s == null ? this : $$11.$$s;
 
-          return $send(self, 'seplist', [obj, nil, "each_pair"], ($$26 = function(k, v){var self = $$26.$$s == null ? this : $$26.$$s, $$27;
+          return $send(self, 'seplist', [obj, nil, "each_pair"], function $$12(k, v){var self = $$12.$$s == null ? this : $$12.$$s;
 
             
             
-            if (k == null) {
-              k = nil;
-            };
+            if (k == null) k = nil;;
             
-            if (v == null) {
-              v = nil;
-            };
-            return $send(self, 'group', [], ($$27 = function(){var self = $$27.$$s == null ? this : $$27.$$s, $$28;
+            if (v == null) v = nil;;
+            return $send(self, 'group', [], function $$13(){var self = $$13.$$s == null ? this : $$13.$$s;
 
               
               self.$pp(k);
               self.$text("=>");
-              return $send(self, 'group', [1], ($$28 = function(){var self = $$28.$$s == null ? this : $$28.$$s;
+              return $send(self, 'group', [1], function $$14(){var self = $$14.$$s == null ? this : $$14.$$s;
 
                 
                 self.$breakable("");
-                return self.$pp(v);}, $$28.$$s = self, $$28.$$arity = 0, $$28));}, $$27.$$s = self, $$27.$$arity = 0, $$27));}, $$26.$$s = self, $$26.$$arity = 2, $$26))}, $$25.$$s = self, $$25.$$arity = 0, $$25))
-      }, $PPMethods_pp_hash$24.$$arity = 1), nil) && 'pp_hash';
+                return self.$pp(v);}, {$$arity: 0, $$s: self});}, {$$arity: 0, $$s: self});}, {$$arity: 2, $$s: self})}, {$$arity: 0, $$s: self})
+      }, 1);
     })($nesting[0], $nesting);
-    self.$include($$($nesting, 'PPMethods'));
+    self.$include($$('PPMethods'));
     (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'SingleLine');
 
-      var $nesting = [self].concat($parent_nesting);
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-      return self.$include($$($nesting, 'PPMethods'))
-    })($nesting[0], $$$($$($nesting, 'PrettyPrint'), 'SingleLine'), $nesting);
+      return self.$include($$('PPMethods'))
+    })($nesting[0], $$$($$('PrettyPrint'), 'SingleLine'), $nesting);
     return (function($base, $parent_nesting) {
       var self = $module($base, 'ObjectMixin');
 
-      var $nesting = [self].concat($parent_nesting), $ObjectMixin_pretty_print$29, $ObjectMixin_pretty_print_cycle$30, $ObjectMixin_pretty_print_instance_variables$32, $ObjectMixin_pretty_print_inspect$33;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
       
-      Opal.def(self, '$pretty_print', $ObjectMixin_pretty_print$29 = function $$pretty_print(q) {
-        var self = this, umethod_method = nil, inspect_method = nil, $ret_or_5 = nil, $ret_or_6 = nil;
+      $def(self, '$pretty_print', function $$pretty_print(q) {
+        var self = this, umethod_method = nil, inspect_method = nil;
 
         
-        umethod_method = $$($nesting, 'Object').$instance_method("method");
+        umethod_method = $$('Object').$instance_method("method");
         
         try {
           inspect_method = umethod_method.$bind_call(self, "inspect")
         } catch ($err) {
-          if (Opal.rescue($err, [$$($nesting, 'NameError')])) {
+          if (Opal.rescue($err, [$$('NameError')])) {
             try {
               nil
             } finally { Opal.pop_exception(); }
           } else { throw $err; }
         };;
-        if ($truthy((function() {if ($truthy(($ret_or_5 = inspect_method))) {
-          return inspect_method.$owner()['$!=']($$($nesting, 'Kernel'))
-        } else {
-          return $ret_or_5
-        }; return nil; })())) {
+        if (($truthy(inspect_method) && ($neqeq(inspect_method.$owner(), $$('Kernel'))))) {
           return q.$text(self.$inspect())
-        } else if ($truthy((function() {if ($truthy(($ret_or_6 = inspect_method['$!']()))) {
-          return self['$respond_to?']("inspect")
-        } else {
-          return $ret_or_6
-        }; return nil; })())) {
+        } else if (($not(inspect_method) && ($truthy(self['$respond_to?']("inspect"))))) {
           return q.$text(self.$inspect())
         } else {
           return q.$pp_object(self)
         };
-      }, $ObjectMixin_pretty_print$29.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$pretty_print_cycle', $ObjectMixin_pretty_print_cycle$30 = function $$pretty_print_cycle(q) {
-        var $$31, self = this;
-
-        return $send(q, 'object_address_group', [self], ($$31 = function(){var self = $$31.$$s == null ? this : $$31.$$s;
+      $def(self, '$pretty_print_cycle', function $$pretty_print_cycle(q) {
+        var self = this;
 
+        return $send(q, 'object_address_group', [self], function $$15(){
           
           q.$breakable();
-          return q.$text("...");}, $$31.$$s = self, $$31.$$arity = 0, $$31))
-      }, $ObjectMixin_pretty_print_cycle$30.$$arity = 1);
+          return q.$text("...");}, 0)
+      }, 1);
       
-      Opal.def(self, '$pretty_print_instance_variables', $ObjectMixin_pretty_print_instance_variables$32 = function $$pretty_print_instance_variables() {
+      $def(self, '$pretty_print_instance_variables', function $$pretty_print_instance_variables() {
         var self = this;
 
         return self.$instance_variables().$sort()
-      }, $ObjectMixin_pretty_print_instance_variables$32.$$arity = 0);
-      return (Opal.def(self, '$pretty_print_inspect', $ObjectMixin_pretty_print_inspect$33 = function $$pretty_print_inspect() {
+      }, 0);
+      return $def(self, '$pretty_print_inspect', function $$pretty_print_inspect() {
         var self = this;
 
         
-        if ($$($nesting, 'Object').$instance_method("method").$bind_call(self, "pretty_print").$owner()['$==']($$$($$($nesting, 'PP'), 'ObjectMixin'))) {
-          self.$raise("" + "pretty_print is not overridden for " + (self.$class()))};
-        return $$($nesting, 'PP').$singleline_pp(self, "".$dup());
-      }, $ObjectMixin_pretty_print_inspect$33.$$arity = 0), nil) && 'pretty_print_inspect';
+        if ($eqeq($$('Object').$instance_method("method").$bind_call(self, "pretty_print").$owner(), $$$($$('PP'), 'ObjectMixin'))) {
+          self.$raise("pretty_print is not overridden for " + (self.$class()))
+        };
+        return $$('PP').$singleline_pp(self, "".$dup());
+      }, 0);
     })($nesting[0], $nesting);
-  })($nesting[0], $$($nesting, 'PrettyPrint'), $nesting);
-  (function($base, $super, $parent_nesting) {
+  })($nesting[0], $$('PrettyPrint'), $nesting);
+  (function($base, $super) {
     var self = $klass($base, $super, 'Array');
 
-    var $nesting = [self].concat($parent_nesting), $Array_pretty_print$34, $Array_pretty_print_cycle$37;
-
     
     
-    Opal.def(self, '$pretty_print', $Array_pretty_print$34 = function $$pretty_print(q) {
-      var $$35, self = this;
-
-      return $send(q, 'group', [1, "[", "]"], ($$35 = function(){var self = $$35.$$s == null ? this : $$35.$$s, $$36;
+    
+    $def(self, '$pretty_print', function $$pretty_print(q) {
+      var self = this;
 
-        return $send(q, 'seplist', [self], ($$36 = function(v){var self = $$36.$$s == null ? this : $$36.$$s;
+      return $send(q, 'group', [1, "[", "]"], function $$16(){var self = $$16.$$s == null ? this : $$16.$$s;
 
+        return $send(q, 'seplist', [self], function $$17(v){
           
           
-          if (v == null) {
-            v = nil;
-          };
-          return q.$pp(v);}, $$36.$$s = self, $$36.$$arity = 1, $$36))}, $$35.$$s = self, $$35.$$arity = 0, $$35))
-    }, $Array_pretty_print$34.$$arity = 1);
-    return (Opal.def(self, '$pretty_print_cycle', $Array_pretty_print_cycle$37 = function $$pretty_print_cycle(q) {
+          if (v == null) v = nil;;
+          return q.$pp(v);}, 1)}, {$$arity: 0, $$s: self})
+    }, 1);
+    return $def(self, '$pretty_print_cycle', function $$pretty_print_cycle(q) {
       var self = this;
 
-      return q.$text((function() {if ($truthy(self['$empty?']())) {
-        return "[]"
-      } else {
-        return "[...]"
-      }; return nil; })())
-    }, $Array_pretty_print_cycle$37.$$arity = 1), nil) && 'pretty_print_cycle';
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+      return q.$text(($truthy(self['$empty?']()) ? ("[]") : ("[...]")))
+    }, 1);
+  })($nesting[0], null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'Hash');
 
-    var $nesting = [self].concat($parent_nesting), $Hash_pretty_print$38, $Hash_pretty_print_cycle$39;
-
     
     
-    Opal.def(self, '$pretty_print', $Hash_pretty_print$38 = function $$pretty_print(q) {
+    
+    $def(self, '$pretty_print', function $$pretty_print(q) {
       var self = this;
 
       return q.$pp_hash(self)
-    }, $Hash_pretty_print$38.$$arity = 1);
-    return (Opal.def(self, '$pretty_print_cycle', $Hash_pretty_print_cycle$39 = function $$pretty_print_cycle(q) {
+    }, 1);
+    return $def(self, '$pretty_print_cycle', function $$pretty_print_cycle(q) {
       var self = this;
 
-      return q.$text((function() {if ($truthy(self['$empty?']())) {
-        return "{}"
-      } else {
-        return "{...}"
-      }; return nil; })())
-    }, $Hash_pretty_print_cycle$39.$$arity = 1), nil) && 'pretty_print_cycle';
-  })($nesting[0], null, $nesting);
+      return q.$text(($truthy(self['$empty?']()) ? ("{}") : ("{...}")))
+    }, 1);
+  })($nesting[0], null);
   (function(self, $parent_nesting) {
-    var $nesting = [self].concat($parent_nesting), $pretty_print$40;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-    return (Opal.def(self, '$pretty_print', $pretty_print$40 = function $$pretty_print(q) {
-      var $$41, self = this, h = nil;
+    return $def(self, '$pretty_print', function $$pretty_print(q) {
+      var h = nil;
 
       
       h = $hash2([], {});
-      $send($$($nesting, 'ENV').$keys().$sort(), 'each', [], ($$41 = function(k){var self = $$41.$$s == null ? this : $$41.$$s, $writer = nil;
+      $send($$('ENV').$keys().$sort(), 'each', [], function $$18(k){var $writer = nil;
 
         
         
-        if (k == null) {
-          k = nil;
-        };
-        $writer = [k, $$($nesting, 'ENV')['$[]'](k)];
-        $send(h, '[]=', Opal.to_a($writer));
-        return $writer[$rb_minus($writer["length"], 1)];}, $$41.$$s = self, $$41.$$arity = 1, $$41));
+        if (k == null) k = nil;;
+        $writer = [k, $$('ENV')['$[]'](k)];
+        $send(h, '[]=', $to_a($writer));
+        return $writer[$rb_minus($writer["length"], 1)];}, 1);
       return q.$pp_hash(h);
-    }, $pretty_print$40.$$arity = 1), nil) && 'pretty_print'
-  })(Opal.get_singleton_class($$($nesting, 'ENV')), $nesting);
+    }, 1)
+  })(Opal.get_singleton_class($$('ENV')), $nesting);
   (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Struct');
 
-    var $nesting = [self].concat($parent_nesting), $Struct_pretty_print$42, $Struct_pretty_print_cycle$47;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
     
-    Opal.def(self, '$pretty_print', $Struct_pretty_print$42 = function $$pretty_print(q) {
-      var $$43, self = this;
-
-      return $send(q, 'group', [1, self.$sprintf("#<struct %s", $$($nesting, 'PP').$mcall(self, $$($nesting, 'Kernel'), "class").$name()), ">"], ($$43 = function(){var self = $$43.$$s == null ? this : $$43.$$s, $$44, $$45;
+    $def(self, '$pretty_print', function $$pretty_print(q) {
+      var self = this;
 
-        return $send(q, 'seplist', [$$($nesting, 'PP').$mcall(self, $$($nesting, 'Struct'), "members"), $send(self, 'lambda', [], ($$44 = function(){var self = $$44.$$s == null ? this : $$44.$$s;
+      return $send(q, 'group', [1, self.$sprintf("#<struct %s", $$('PP').$mcall(self, $$('Kernel'), "class").$name()), ">"], function $$19(){var self = $$19.$$s == null ? this : $$19.$$s;
 
-          return q.$text(",")}, $$44.$$s = self, $$44.$$arity = 0, $$44))], ($$45 = function(member){var self = $$45.$$s == null ? this : $$45.$$s, $$46;
+        return $send(q, 'seplist', [$$('PP').$mcall(self, $$('Struct'), "members"), $send(self, 'lambda', [], function $$20(){
+          return q.$text(",")}, 0)], function $$21(member){var self = $$21.$$s == null ? this : $$21.$$s;
 
           
           
-          if (member == null) {
-            member = nil;
-          };
+          if (member == null) member = nil;;
           q.$breakable();
           q.$text(member.$to_s());
           q.$text("=");
-          return $send(q, 'group', [1], ($$46 = function(){var self = $$46.$$s == null ? this : $$46.$$s;
+          return $send(q, 'group', [1], function $$22(){var self = $$22.$$s == null ? this : $$22.$$s;
 
             
             q.$breakable("");
-            return q.$pp(self['$[]'](member));}, $$46.$$s = self, $$46.$$arity = 0, $$46));}, $$45.$$s = self, $$45.$$arity = 1, $$45))}, $$43.$$s = self, $$43.$$arity = 0, $$43))
-    }, $Struct_pretty_print$42.$$arity = 1);
-    return (Opal.def(self, '$pretty_print_cycle', $Struct_pretty_print_cycle$47 = function $$pretty_print_cycle(q) {
+            return q.$pp(self['$[]'](member));}, {$$arity: 0, $$s: self});}, {$$arity: 1, $$s: self})}, {$$arity: 0, $$s: self})
+    }, 1);
+    return $def(self, '$pretty_print_cycle', function $$pretty_print_cycle(q) {
       var self = this;
 
-      return q.$text(self.$sprintf("#<struct %s:...>", $$($nesting, 'PP').$mcall(self, $$($nesting, 'Kernel'), "class").$name()))
-    }, $Struct_pretty_print_cycle$47.$$arity = 1), nil) && 'pretty_print_cycle';
+      return q.$text(self.$sprintf("#<struct %s:...>", $$('PP').$mcall(self, $$('Kernel'), "class").$name()))
+    }, 1);
   })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+  (function($base, $super) {
     var self = $klass($base, $super, 'Range');
 
-    var $nesting = [self].concat($parent_nesting), $Range_pretty_print$48;
-
-    return (Opal.def(self, '$pretty_print', $Range_pretty_print$48 = function $$pretty_print(q) {
+    
+    return $def(self, '$pretty_print', function $$pretty_print(q) {
       var self = this;
 
       
       q.$pp(self.$begin());
       q.$breakable("");
-      q.$text((function() {if ($truthy(self['$exclude_end?']())) {
-        return "..."
-      } else {
-        return ".."
-      }; return nil; })());
+      q.$text(($truthy(self['$exclude_end?']()) ? ("...") : ("..")));
       q.$breakable("");
       if ($truthy(self.$end())) {
         return q.$pp(self.$end())
       } else {
         return nil
       };
-    }, $Range_pretty_print$48.$$arity = 1), nil) && 'pretty_print'
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 1)
+  })($nesting[0], null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'String');
 
-    var $nesting = [self].concat($parent_nesting), $String_pretty_print$49;
-
-    return (Opal.def(self, '$pretty_print', $String_pretty_print$49 = function $$pretty_print(q) {
-      var $$50, self = this, lines = nil;
+    
+    return $def(self, '$pretty_print', function $$pretty_print(q) {
+      var self = this, lines = nil;
 
       
       lines = self.$lines();
       if ($truthy($rb_gt(lines.$size(), 1))) {
-        return $send(q, 'group', [0, "", ""], ($$50 = function(){var self = $$50.$$s == null ? this : $$50.$$s, $$51, $$52;
-
-          return $send(q, 'seplist', [lines, $send(self, 'lambda', [], ($$51 = function(){var self = $$51.$$s == null ? this : $$51.$$s;
+        return $send(q, 'group', [0, "", ""], function $$23(){var self = $$23.$$s == null ? this : $$23.$$s;
 
+          return $send(q, 'seplist', [lines, $send(self, 'lambda', [], function $$24(){
             
             q.$text(" +");
-            return q.$breakable();}, $$51.$$s = self, $$51.$$arity = 0, $$51))], ($$52 = function(v){var self = $$52.$$s == null ? this : $$52.$$s;
-
+            return q.$breakable();}, 0)], function $$25(v){
             
             
-            if (v == null) {
-              v = nil;
-            };
-            return q.$pp(v);}, $$52.$$s = self, $$52.$$arity = 1, $$52))}, $$50.$$s = self, $$50.$$arity = 0, $$50))
+            if (v == null) v = nil;;
+            return q.$pp(v);}, 1)}, {$$arity: 0, $$s: self})
       } else {
         return q.$text(self.$inspect())
       };
-    }, $String_pretty_print$49.$$arity = 1), nil) && 'pretty_print'
-  })($nesting[0], null, $nesting);
-  (function($base, $super, $parent_nesting) {
+    }, 1)
+  })($nesting[0], null);
+  (function($base, $super) {
     var self = $klass($base, $super, 'MatchData');
 
-    var $nesting = [self].concat($parent_nesting), $MatchData_pretty_print$53;
-
-    return (Opal.def(self, '$pretty_print', $MatchData_pretty_print$53 = function $$pretty_print(q) {
-      var $$54, $$56, self = this, nc = nil;
+    
+    return $def(self, '$pretty_print', function $$pretty_print(q) {
+      var self = this, nc = nil;
 
       
       nc = [];
-      $send(self.$regexp().$named_captures(), 'each', [], ($$54 = function(name, indexes){var self = $$54.$$s == null ? this : $$54.$$s, $$55;
-
+      $send(self.$regexp().$named_captures(), 'each', [], function $$26(name, indexes){
         
         
-        if (name == null) {
-          name = nil;
-        };
+        if (name == null) name = nil;;
         
-        if (indexes == null) {
-          indexes = nil;
-        };
-        return $send(indexes, 'each', [], ($$55 = function(i){var self = $$55.$$s == null ? this : $$55.$$s, $writer = nil;
+        if (indexes == null) indexes = nil;;
+        return $send(indexes, 'each', [], function $$27(i){var $writer = nil;
 
           
           
-          if (i == null) {
-            i = nil;
-          };
+          if (i == null) i = nil;;
           $writer = [i, name];
-          $send(nc, '[]=', Opal.to_a($writer));
-          return $writer[$rb_minus($writer["length"], 1)];}, $$55.$$s = self, $$55.$$arity = 1, $$55));}, $$54.$$s = self, $$54.$$arity = 2, $$54));
-      return $send(q, 'object_group', [self], ($$56 = function(){var self = $$56.$$s == null ? this : $$56.$$s, $$57, $$58;
+          $send(nc, '[]=', $to_a($writer));
+          return $writer[$rb_minus($writer["length"], 1)];}, 1);}, 2);
+      return $send(q, 'object_group', [self], function $$28(){var self = $$28.$$s == null ? this : $$28.$$s;
 
         
         q.$breakable();
-        return $send(q, 'seplist', [Opal.Range.$new(0,self.$size(), true), $send(self, 'lambda', [], ($$57 = function(){var self = $$57.$$s == null ? this : $$57.$$s;
-
-          return q.$breakable()}, $$57.$$s = self, $$57.$$arity = 0, $$57))], ($$58 = function(i){var self = $$58.$$s == null ? this : $$58.$$s;
+        return $send(q, 'seplist', [Opal.Range.$new(0,self.$size(), true), $send(self, 'lambda', [], function $$29(){
+          return q.$breakable()}, 0)], function $$30(i){var self = $$30.$$s == null ? this : $$30.$$s;
 
           
           
-          if (i == null) {
-            i = nil;
-          };
-          if (i['$=='](0)) {
+          if (i == null) i = nil;;
+          if ($eqeq(i, 0)) {
             return q.$pp(self['$[]'](i))
           } else {
             
@@ -1880,79 +1477,72 @@ Opal.modules["pp"] = function(Opal) {
             };
             q.$text(":");
             return q.$pp(self['$[]'](i));
-          };}, $$58.$$s = self, $$58.$$arity = 1, $$58));}, $$56.$$s = self, $$56.$$arity = 0, $$56));
-    }, $MatchData_pretty_print$53.$$arity = 1), nil) && 'pretty_print'
-  })($nesting[0], null, $nesting);
+          };}, {$$arity: 1, $$s: self});}, {$$arity: 0, $$s: self});
+    }, 1)
+  })($nesting[0], null);
   (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Object');
 
-    var $nesting = [self].concat($parent_nesting);
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-    return self.$include($$$($$($nesting, 'PP'), 'ObjectMixin'))
-  })($nesting[0], $$($nesting, 'BasicObject'), $nesting);
-  $send([$$($nesting, 'Numeric'), $$($nesting, 'Symbol'), $$($nesting, 'FalseClass'), $$($nesting, 'TrueClass'), $$($nesting, 'NilClass'), $$($nesting, 'Module')], 'each', [], ($$59 = function(c){var self = $$59.$$s == null ? this : $$59.$$s, $$60;
+    return self.$include($$$($$('PP'), 'ObjectMixin'))
+  })($nesting[0], $$('BasicObject'), $nesting);
+  $send([$$('Numeric'), $$('Symbol'), $$('FalseClass'), $$('TrueClass'), $$('NilClass'), $$('Module')], 'each', [], function $$31(c){var self = $$31.$$s == null ? this : $$31.$$s;
 
     
     
-    if (c == null) {
-      c = nil;
-    };
-    return $send(c, 'class_eval', [], ($$60 = function(){var self = $$60.$$s == null ? this : $$60.$$s, $pretty_print_cycle$61;
+    if (c == null) c = nil;;
+    return $send(c, 'class_eval', [], function $$32(){var self = $$32.$$s == null ? this : $$32.$$s;
 
-      return (Opal.def(self, '$pretty_print_cycle', $pretty_print_cycle$61 = function $$pretty_print_cycle(q) {
+      return $def(self, '$pretty_print_cycle', function $$pretty_print_cycle(q) {
         var self = this;
 
         return q.$text(self.$inspect())
-      }, $pretty_print_cycle$61.$$arity = 1), nil) && 'pretty_print_cycle'}, $$60.$$s = self, $$60.$$arity = 0, $$60));}, $$59.$$s = self, $$59.$$arity = 1, $$59));
-  $send([$$($nesting, 'Numeric'), $$($nesting, 'FalseClass'), $$($nesting, 'TrueClass'), $$($nesting, 'Module')], 'each', [], ($$62 = function(c){var self = $$62.$$s == null ? this : $$62.$$s, $$63;
+      }, 1)}, {$$arity: 0, $$s: self});}, {$$arity: 1, $$s: self});
+  $send([$$('Numeric'), $$('FalseClass'), $$('TrueClass'), $$('Module')], 'each', [], function $$33(c){var self = $$33.$$s == null ? this : $$33.$$s;
 
     
     
-    if (c == null) {
-      c = nil;
-    };
-    return $send(c, 'class_eval', [], ($$63 = function(){var self = $$63.$$s == null ? this : $$63.$$s, $pretty_print$64;
+    if (c == null) c = nil;;
+    return $send(c, 'class_eval', [], function $$34(){var self = $$34.$$s == null ? this : $$34.$$s;
 
-      return (Opal.def(self, '$pretty_print', $pretty_print$64 = function $$pretty_print(q) {
+      return $def(self, '$pretty_print', function $$pretty_print(q) {
         var self = this;
 
         return q.$text(self.$inspect())
-      }, $pretty_print$64.$$arity = 1), nil) && 'pretty_print'}, $$63.$$s = self, $$63.$$arity = 0, $$63));}, $$62.$$s = self, $$62.$$arity = 1, $$62));
+      }, 1)}, {$$arity: 0, $$s: self});}, {$$arity: 1, $$s: self});
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Kernel');
 
-    var $nesting = [self].concat($parent_nesting), $Kernel_pretty_inspect$65, $Kernel_pp$66;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
     
-    Opal.def(self, '$pretty_inspect', $Kernel_pretty_inspect$65 = function $$pretty_inspect() {
+    $def(self, '$pretty_inspect', function $$pretty_inspect() {
       var self = this;
 
-      return $$($nesting, 'PP').$pp(self, $$($nesting, 'StringIO').$new()).$string()
-    }, $Kernel_pretty_inspect$65.$$arity = 0);
+      return $$('PP').$pp(self, $$('StringIO').$new()).$string()
+    }, 0);
     
-    Opal.def(self, '$pp', $Kernel_pp$66 = function $$pp($a) {
-      var $post_args, objs, $$67, self = this;
+    $def(self, '$pp', function $$pp($a) {
+      var $post_args, objs;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       objs = $post_args;;
-      $send(objs, 'each', [], ($$67 = function(obj){var self = $$67.$$s == null ? this : $$67.$$s;
-
+      $send(objs, 'each', [], function $$35(obj){
         
         
-        if (obj == null) {
-          obj = nil;
-        };
-        return $$($nesting, 'PP').$pp(obj);}, $$67.$$s = self, $$67.$$arity = 1, $$67));
+        if (obj == null) obj = nil;;
+        return $$('PP').$pp(obj);}, 1);
       if ($truthy($rb_le(objs.$size(), 1))) {
         return objs.$first()
       } else {
         return objs
       };
-    }, $Kernel_pp$66.$$arity = -1);
+    }, -1);
     return self.$module_function("pp");
   })($nesting[0], $nesting);
 };
diff --git a/opal/master/pp.min.js b/opal/master/pp.min.js
index e96ef816..8f6222dd 100644
--- a/opal/master/pp.min.js
+++ b/opal/master/pp.min.js
@@ -1 +1 @@
-Opal.modules.thread=function(Opal){function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}Opal.top;var $base,$super,$parent_nesting,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send,$hash2=Opal.hash2,$alias=Opal.alias;return Opal.add_stubs(["$allocate","$core_initialize!","$current","$raise","$[]","$coerce_key_name","$[]=","$-","$key?","$keys","$private","$coerce_to!","$clear","$empty?","$size","$shift","$push","$each","$to_proc","$=~","$last_match","$to_i","$inspect","$attr_reader","$locked?","$lock","$unlock"]),$base=$nesting[0],$super=$$($nesting,"StandardError"),$parent_nesting=$nesting,[$klass($base,$super,"ThreadError")].concat($parent_nesting),function($Thread_coerce_key_name$13,$Thread_core_initialize$excl$12){var $nesting=[$Thread_coerce_key_name$13=$klass($Thread_coerce_key_name$13,null,"Thread")].concat($Thread_core_initialize$excl$12);$Thread_coerce_key_name$13.$$prototype.fiber_locals=$Thread_coerce_key_name$13.$$prototype.thread_locals=nil,Opal.defs($Thread_coerce_key_name$13,"$current",$Thread_core_initialize$excl$12=function(){return null==this.current&&(this.current=nil),$truthy(this.current)||(this.current=this.$allocate(),this.current["$core_initialize!"]()),this.current},$Thread_core_initialize$excl$12.$$arity=0),Opal.defs($Thread_coerce_key_name$13,"$list",$Thread_core_initialize$excl$12=function(){return[this.$current()]},$Thread_core_initialize$excl$12.$$arity=0),Opal.def($Thread_coerce_key_name$13,"$initialize",$Thread_core_initialize$excl$12=function($a){Opal.slice.call(arguments,0,arguments.length);return this.$raise($$($nesting,"NotImplementedError"),"Thread creation not available")},$Thread_core_initialize$excl$12.$$arity=-1),Opal.def($Thread_coerce_key_name$13,"$[]",$Thread_core_initialize$excl$12=function(key){return this.fiber_locals["$[]"](this.$coerce_key_name(key))},$Thread_core_initialize$excl$12.$$arity=1),Opal.def($Thread_coerce_key_name$13,"$[]=",$Thread_core_initialize$excl$12=function(key,value){var $writer=[this.$coerce_key_name(key),value];return $send(this.fiber_locals,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]},$Thread_core_initialize$excl$12.$$arity=2),Opal.def($Thread_coerce_key_name$13,"$key?",$Thread_core_initialize$excl$12=function(key){return this.fiber_locals["$key?"](this.$coerce_key_name(key))},$Thread_core_initialize$excl$12.$$arity=1),Opal.def($Thread_coerce_key_name$13,"$keys",$Thread_core_initialize$excl$12=function(){return this.fiber_locals.$keys()},$Thread_core_initialize$excl$12.$$arity=0),Opal.def($Thread_coerce_key_name$13,"$thread_variable_get",$Thread_core_initialize$excl$12=function(key){return this.thread_locals["$[]"](this.$coerce_key_name(key))},$Thread_core_initialize$excl$12.$$arity=1),Opal.def($Thread_coerce_key_name$13,"$thread_variable_set",$Thread_core_initialize$excl$12=function(key,value){var $writer=[this.$coerce_key_name(key),value];return $send(this.thread_locals,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]},$Thread_core_initialize$excl$12.$$arity=2),Opal.def($Thread_coerce_key_name$13,"$thread_variable?",$Thread_core_initialize$excl$12=function(key){return this.thread_locals["$key?"](this.$coerce_key_name(key))},$Thread_core_initialize$excl$12.$$arity=1),Opal.def($Thread_coerce_key_name$13,"$thread_variables",$Thread_core_initialize$excl$12=function(){return this.thread_locals.$keys()},$Thread_core_initialize$excl$12.$$arity=0),$Thread_coerce_key_name$13.$private(),Opal.def($Thread_coerce_key_name$13,"$core_initialize!",$Thread_core_initialize$excl$12=function(){return this.thread_locals=$hash2([],{}),this.fiber_locals=$hash2([],{})},$Thread_core_initialize$excl$12.$$arity=0),Opal.def($Thread_coerce_key_name$13,"$coerce_key_name",$Thread_coerce_key_name$13=function(key){return $$($nesting,"Opal")["$coerce_to!"](key,$$($nesting,"String"),"to_s")},$Thread_coerce_key_name$13.$$arity=1),function(self,$Queue_push$19){var $Queue_each$20,$nesting=[self=$klass(self,null,"Queue")].concat($Queue_push$19);self.$$prototype.storage=nil,Opal.def(self,"$initialize",$Queue_push$19=function(){return this.$clear()},$Queue_push$19.$$arity=0),Opal.def(self,"$clear",$Queue_push$19=function(){return this.storage=[]},$Queue_push$19.$$arity=0),Opal.def(self,"$empty?",$Queue_push$19=function(){return this.storage["$empty?"]()},$Queue_push$19.$$arity=0),Opal.def(self,"$size",$Queue_push$19=function(){return this.storage.$size()},$Queue_push$19.$$arity=0),$alias(self,"length","size"),Opal.def(self,"$pop",$Queue_push$19=function(non_block){return null==non_block&&(non_block=!1),$truthy(this["$empty?"]())&&($truthy(non_block)&&this.$raise($$($nesting,"ThreadError"),"Queue empty"),this.$raise($$($nesting,"ThreadError"),"Deadlock")),this.storage.$shift()},$Queue_push$19.$$arity=-1),$alias(self,"shift","pop"),$alias(self,"deq","pop"),Opal.def(self,"$push",$Queue_push$19=function(value){return this.storage.$push(value)},$Queue_push$19.$$arity=1),$alias(self,"<<","push"),$alias(self,"enq","push"),Opal.def(self,"$each",$Queue_each$20=function(){var $iter=$Queue_each$20.$$p,block=$iter||nil;return $iter&&($Queue_each$20.$$p=null),$iter&&($Queue_each$20.$$p=null),$send(this.storage,"each",[],block.$to_proc())},$Queue_each$20.$$arity=0)}($nesting[0],$nesting),function($base,$nesting){!function(self,$Location_inspect$23){var $nesting=[self=$klass(self,null,"Location")].concat($Location_inspect$23);self.$$prototype.label=self.$$prototype.str=nil,Opal.def(self,"$initialize",$Location_inspect$23=function(str){var self=this,$ret_or_1=nil;return(self.str=str)["$=~"](/^(.*?):(\d+):(\d+):in `(.*?)'$/),self.path=$$($nesting,"Regexp").$last_match(1),self.label=$$($nesting,"Regexp").$last_match(4),self.lineno=$$($nesting,"Regexp").$last_match(2).$to_i(),self.label["$=~"](/(\w+)$/),self.base_label=$truthy($ret_or_1=$$($nesting,"Regexp").$last_match(1))?$ret_or_1:self.label},$Location_inspect$23.$$arity=1),Opal.def(self,"$to_s",$Location_inspect$23=function(){return this.str},$Location_inspect$23.$$arity=0),Opal.def(self,"$inspect",$Location_inspect$23=function(){return this.str.$inspect()},$Location_inspect$23.$$arity=0),self.$attr_reader("base_label","label","lineno","path"),$alias(self,"absolute_path","path")}(($nesting=[$klass($base,null,"Backtrace")].concat($nesting))[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting),Opal.const_set($nesting[0],"Queue",$$$($$($nesting,"Thread"),"Queue")),function(self,$Mutex_unlock$29){var $Mutex_synchronize$30,self=$klass(self,null,"Mutex"),$nesting=[self].concat($Mutex_unlock$29);return self.$$prototype.locked=nil,Opal.def(self,"$initialize",$Mutex_unlock$29=function(){return this.locked=!1},$Mutex_unlock$29.$$arity=0),Opal.def(self,"$lock",$Mutex_unlock$29=function(){return $truthy(this.locked)&&this.$raise($$($nesting,"ThreadError"),"Deadlock"),this.locked=!0,this},$Mutex_unlock$29.$$arity=0),Opal.def(self,"$locked?",$Mutex_unlock$29=function(){return this.locked},$Mutex_unlock$29.$$arity=0),Opal.def(self,"$owned?",$Mutex_unlock$29=function(){return this.locked},$Mutex_unlock$29.$$arity=0),Opal.def(self,"$try_lock",$Mutex_unlock$29=function(){return!$truthy(this["$locked?"]())&&(this.$lock(),!0)},$Mutex_unlock$29.$$arity=0),Opal.def(self,"$unlock",$Mutex_unlock$29=function(){return $truthy(this.locked)||this.$raise($$($nesting,"ThreadError"),"Mutex not locked"),this.locked=!1,this},$Mutex_unlock$29.$$arity=0),Opal.def(self,"$synchronize",$Mutex_synchronize$30=function(){var $iter=$Mutex_synchronize$30.$$p,$yield=$iter||nil,self=this;return $iter&&($Mutex_synchronize$30.$$p=null),self.$lock(),function(){try{return Opal.yieldX($yield,[])}finally{self.$unlock()}}()},$Mutex_synchronize$30.$$arity=0),nil&&"synchronize"}($nesting[0],$nesting)},Opal.modules.stringio=function(Opal){function $rb_gt(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?rhs<lhs:lhs["$>"](rhs)}function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}Opal.top;var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$klass=Opal.klass,$truthy=Opal.truthy,$alias=Opal.alias,$gvars=Opal.gvars;return Opal.add_stubs(["$include","$new","$call","$close","$attr_accessor","$length","$include?","$!","$check_readable","$==","$===","$>=","$raise","$>","$+","$-","$seek","$enum_for","$eof?","$ord","$[]","$to_str","$chomp","$check_writable","$String","$write","$closed_write?","$closed_read?"]),function($base,$StringIO_check_readable$19,$StringIO_check_writable$18){var $StringIO_open$1,$StringIO_each_byte$7,$StringIO_each_char$8,$StringIO_each$9,$StringIO_check_readable$19=$klass($base,$StringIO_check_readable$19,"StringIO"),$nesting=[$StringIO_check_readable$19].concat($StringIO_check_writable$18);return $StringIO_check_readable$19.$$prototype.position=$StringIO_check_readable$19.$$prototype.string=$StringIO_check_readable$19.$$prototype.closed=nil,$StringIO_check_readable$19.$include($$$($$($nesting,"IO"),"Readable")),$StringIO_check_readable$19.$include($$$($$($nesting,"IO"),"Writable")),Opal.defs($StringIO_check_readable$19,"$open",$StringIO_open$1=function(string,mode){var res,$iter=$StringIO_open$1.$$p,block=$iter||nil,io=nil;return $iter&&($StringIO_open$1.$$p=null),$iter&&($StringIO_open$1.$$p=null),null==string&&(string=""),null==mode&&(mode=nil),io=this.$new(string,mode),res=block.$call(io),io.$close(),res},$StringIO_open$1.$$arity=-1),$StringIO_check_readable$19.$attr_accessor("string"),Opal.def($StringIO_check_readable$19,"$initialize",$StringIO_check_writable$18=function(string,mode){var $ret_or_1=nil,$ret_or_2=nil;return null==string&&(string=""),null==mode&&(mode="rw"),this.string=string,this.position=string.$length(),$truthy($truthy($ret_or_1=mode["$include?"]("r"))?mode["$include?"]("w")["$!"]():$ret_or_1)?this.closed="write":$truthy($truthy($ret_or_2=mode["$include?"]("w"))?mode["$include?"]("r")["$!"]():$ret_or_2)?this.closed="read":nil},$StringIO_check_writable$18.$$arity=-1),Opal.def($StringIO_check_readable$19,"$eof?",$StringIO_check_writable$18=function(){return this.$check_readable(),this.position["$=="](this.string.$length())},$StringIO_check_writable$18.$$arity=0),$alias($StringIO_check_readable$19,"eof","eof?"),Opal.def($StringIO_check_readable$19,"$seek",$StringIO_check_writable$18=function(pos,lhs){var $case,rhs;return null==lhs&&(lhs=$$$($$($nesting,"IO"),"SEEK_SET")),$case=lhs,$$$($$($nesting,"IO"),"SEEK_SET")["$==="]($case)?($truthy((rhs=0,"number"==typeof(lhs=pos)&&"number"==typeof rhs?rhs<=lhs:lhs["$>="](rhs)))||this.$raise($$$($$($nesting,"Errno"),"EINVAL")),this.position=pos):$$$($$($nesting,"IO"),"SEEK_CUR")["$==="]($case)?$truthy($rb_gt($rb_plus(this.position,pos),this.string.$length()))?this.position=this.string.$length():this.position=$rb_plus(this.position,pos):$$$($$($nesting,"IO"),"SEEK_END")["$==="]($case)&&($truthy($rb_gt(pos,this.string.$length()))?this.position=0:this.position=$rb_minus(this.position,pos)),0},$StringIO_check_writable$18.$$arity=-2),Opal.def($StringIO_check_readable$19,"$tell",$StringIO_check_writable$18=function(){return this.position},$StringIO_check_writable$18.$$arity=0),$alias($StringIO_check_readable$19,"pos","tell"),$alias($StringIO_check_readable$19,"pos=","seek"),Opal.def($StringIO_check_readable$19,"$rewind",$StringIO_check_writable$18=function(){return this.$seek(0)},$StringIO_check_writable$18.$$arity=0),Opal.def($StringIO_check_readable$19,"$each_byte",$StringIO_each_byte$7=function(){var $iter=$StringIO_each_byte$7.$$p,block=$iter||nil,i=nil;if($iter&&($StringIO_each_byte$7.$$p=null),$iter&&($StringIO_each_byte$7.$$p=null),!$truthy(block))return this.$enum_for("each_byte");for(this.$check_readable(),i=this.position;!$truthy(this["$eof?"]());)block.$call(this.string["$[]"](i).$ord()),i=$rb_plus(i,1);return this},$StringIO_each_byte$7.$$arity=0),Opal.def($StringIO_check_readable$19,"$each_char",$StringIO_each_char$8=function(){var $iter=$StringIO_each_char$8.$$p,block=$iter||nil,i=nil;if($iter&&($StringIO_each_char$8.$$p=null),$iter&&($StringIO_each_char$8.$$p=null),!$truthy(block))return this.$enum_for("each_char");for(this.$check_readable(),i=this.position;!$truthy(this["$eof?"]());)block.$call(this.string["$[]"](i)),i=$rb_plus(i,1);return this},$StringIO_each_char$8.$$arity=0),Opal.def($StringIO_check_readable$19,"$each",$StringIO_each$9=function(separator){var chomped=$StringIO_each$9.$$p,$yield=chomped||nil,chomp_lines=nil;if(null==$gvars["/"]&&($gvars["/"]=nil),chomped&&($StringIO_each$9.$$p=null),null==separator&&(separator=$gvars["/"]),$yield===nil)return this.$enum_for("each_line");this.$check_readable(),chomp_lines=!1,separator=$truthy($$$("::","Hash")["$==="](separator))?$truthy(chomp_lines=separator["$[]"]("chomp"))?/\r?\n/:$gvars["/"]:$truthy(separator)?separator.$to_str():void 0;var str=this.string,stringLength=str.length;if(this.position<stringLength&&(str=str.substr(this.position)),separator)for(var chomped=str.$chomp(),trailing=str.length!==chomped.length,splitted=chomped.split(separator),i=0,len=splitted.length;i<len;i++){var line=!chomp_lines&&(i<len-1||trailing)?splitted[i]+separator:splitted[i];Opal.yield1($yield,line)}else if(void 0===separator)Opal.yield1($yield,str);else for(var m,re=/(.+(?:\n\n|$))\n*/g;m=re.exec(str);)Opal.yield1($yield,m[1]);return this.position=stringLength,this},$StringIO_each$9.$$arity=-1),$alias($StringIO_check_readable$19,"each_line","each"),Opal.def($StringIO_check_readable$19,"$write",$StringIO_check_writable$18=function(string){var before,after;return this.$check_writable(),string=this.$String(string),this.string.$length()["$=="](this.position)?this.string=$rb_plus(this.string,string):(before=this.string["$[]"](Opal.Range.$new(0,$rb_minus(this.position,1),!1)),after=this.string["$[]"](Opal.Range.$new($rb_plus(this.position,string.$length()),-1,!1)),this.string=$rb_plus($rb_plus(before,string),after)),this.position=$rb_plus(this.position,string.$length())},$StringIO_check_writable$18.$$arity=1),Opal.def($StringIO_check_readable$19,"$read",$StringIO_check_writable$18=function(length,outbuf){var self=this,string=nil,str=nil;return null==length&&(length=nil),null==outbuf&&(outbuf=nil),self.$check_readable(),$truthy(self["$eof?"]())?nil:($truthy(length)?(str=self.string["$[]"](self.position,length),self.position=$rb_plus(self.position,length)):(str=self.string["$[]"](Opal.Range.$new(self.position,-1,!1)),self.position=self.string.$length()),string=str,$truthy(outbuf)?outbuf.$write(string):string)},$StringIO_check_writable$18.$$arity=-1),Opal.def($StringIO_check_readable$19,"$close",$StringIO_check_writable$18=function(){return this.closed="both"},$StringIO_check_writable$18.$$arity=0),Opal.def($StringIO_check_readable$19,"$close_read",$StringIO_check_writable$18=function(){return this.closed["$=="]("write")?this.closed="both":this.closed="read"},$StringIO_check_writable$18.$$arity=0),Opal.def($StringIO_check_readable$19,"$close_write",$StringIO_check_writable$18=function(){return this.closed["$=="]("read")?this.closed="both":this.closed="write"},$StringIO_check_writable$18.$$arity=0),Opal.def($StringIO_check_readable$19,"$closed?",$StringIO_check_writable$18=function(){return this.closed["$=="]("both")},$StringIO_check_writable$18.$$arity=0),Opal.def($StringIO_check_readable$19,"$closed_read?",$StringIO_check_writable$18=function(){var $ret_or_3;return $truthy($ret_or_3=this.closed["$=="]("read"))?$ret_or_3:this.closed["$=="]("both")},$StringIO_check_writable$18.$$arity=0),Opal.def($StringIO_check_readable$19,"$closed_write?",$StringIO_check_writable$18=function(){var $ret_or_4;return $truthy($ret_or_4=this.closed["$=="]("write"))?$ret_or_4:this.closed["$=="]("both")},$StringIO_check_writable$18.$$arity=0),Opal.def($StringIO_check_readable$19,"$check_writable",$StringIO_check_writable$18=function(){return $truthy(this["$closed_write?"]())?this.$raise($$($nesting,"IOError"),"not opened for writing"):nil},$StringIO_check_writable$18.$$arity=0),Opal.def($StringIO_check_readable$19,"$check_readable",$StringIO_check_readable$19=function(){return $truthy(this["$closed_read?"]())?this.$raise($$($nesting,"IOError"),"not opened for reading"):nil},$StringIO_check_readable$19.$$arity=0),nil&&"check_readable"}($nesting[0],$$($nesting,"IO"),$nesting)},Opal.modules.prettyprint=function(Opal){function $rb_times(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs*rhs:lhs["$*"](rhs)}function $rb_lt(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs<rhs:lhs["$<"](rhs)}function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$klass=Opal.klass,$send=Opal.send,$truthy=Opal.truthy;return Opal.add_stubs(["$dup","$lambda","$*","$new","$to_proc","$flush","$attr_reader","$last","$<","$+","$deq","$empty?","$breakables","$shift","$output","$-","$width","$!","$===","$first","$length","$<<","$add","$break_outmost_groups","$group","$breakable","$break?","$call","$text","$group_sub","$nest","$depth","$push","$enq","$pop","$delete","$each","$clear","$indent","$current_group","$newline","$genspace","$group_queue","$[]","$downto","$slice!","$break","$[]="]),function($GroupQueue_deq$32,$GroupQueue_delete$36){var $PrettyPrint_format$1,$PrettyPrint_singleline_format$3,$PrettyPrint_initialize$4,$PrettyPrint_group$12,$PrettyPrint_group_sub$15,$PrettyPrint_nest$16,$GroupQueue_deq$32=$klass($GroupQueue_deq$32,null,"PrettyPrint"),$nesting=[$GroupQueue_deq$32].concat($GroupQueue_delete$36);return $GroupQueue_deq$32.$$prototype.group_stack=$GroupQueue_deq$32.$$prototype.maxwidth=$GroupQueue_deq$32.$$prototype.output_width=$GroupQueue_deq$32.$$prototype.buffer_width=$GroupQueue_deq$32.$$prototype.group_queue=$GroupQueue_deq$32.$$prototype.buffer=$GroupQueue_deq$32.$$prototype.output=$GroupQueue_deq$32.$$prototype.newline=$GroupQueue_deq$32.$$prototype.genspace=$GroupQueue_deq$32.$$prototype.indent=nil,Opal.defs($$($nesting,"PrettyPrint"),"$format",$PrettyPrint_format$1=function(output,maxwidth,newline,genspace){var $$2,$iter=$PrettyPrint_format$1.$$p,$yield=$iter||nil,q=nil;return $iter&&($PrettyPrint_format$1.$$p=null),null==output&&(output="".$dup()),null==maxwidth&&(maxwidth=79),null==newline&&(newline="\n"),null==genspace&&(genspace=$send(this,"lambda",[],(($$2=function(n){null==$$2.$$s||$$2.$$s;return null==n&&(n=nil),$rb_times(" ",n)}).$$s=this,$$2.$$arity=1,$$2))),q=$send($$($nesting,"PrettyPrint"),"new",[output,maxwidth,newline],genspace.$to_proc()),Opal.yield1($yield,q),q.$flush(),output},$PrettyPrint_format$1.$$arity=-1),Opal.defs($$($nesting,"PrettyPrint"),"$singleline_format",$PrettyPrint_singleline_format$3=function(output,maxwidth,newline,genspace){var q,$iter=$PrettyPrint_singleline_format$3.$$p,$yield=$iter||nil;return $iter&&($PrettyPrint_singleline_format$3.$$p=null),null==output&&(output="".$dup()),null==maxwidth&&(maxwidth=nil),null==newline&&(newline=nil),null==genspace&&(genspace=nil),q=$$($nesting,"SingleLine").$new(output),Opal.yield1($yield,q),output},$PrettyPrint_singleline_format$3.$$arity=-1),Opal.def($GroupQueue_deq$32,"$initialize",$PrettyPrint_initialize$4=function(output,maxwidth,newline){var $$5,$ret_or_1,root_group,$iter=$PrettyPrint_initialize$4.$$p,genspace=$iter||nil,self=this;return $iter&&($PrettyPrint_initialize$4.$$p=null),$iter&&($PrettyPrint_initialize$4.$$p=null),null==output&&(output="".$dup()),null==maxwidth&&(maxwidth=79),null==newline&&(newline="\n"),self.output=output,self.maxwidth=maxwidth,self.newline=newline,self.genspace=$truthy($ret_or_1=genspace)?$ret_or_1:$send(self,"lambda",[],(($$5=function(n){null==$$5.$$s||$$5.$$s;return null==n&&(n=nil),$rb_times(" ",n)}).$$s=self,$$5.$$arity=1,$$5)),self.output_width=0,self.buffer_width=0,self.buffer=[],root_group=$$($nesting,"Group").$new(0),self.group_stack=[root_group],self.group_queue=$$($nesting,"GroupQueue").$new(root_group),self.indent=0},$PrettyPrint_initialize$4.$$arity=-1),$GroupQueue_deq$32.$attr_reader("output"),$GroupQueue_deq$32.$attr_reader("maxwidth"),$GroupQueue_deq$32.$attr_reader("newline"),$GroupQueue_deq$32.$attr_reader("genspace"),$GroupQueue_deq$32.$attr_reader("indent"),$GroupQueue_deq$32.$attr_reader("group_queue"),Opal.def($GroupQueue_deq$32,"$current_group",$GroupQueue_delete$36=function(){return this.group_stack.$last()},$GroupQueue_delete$36.$$arity=0),Opal.def($GroupQueue_deq$32,"$break_outmost_groups",$GroupQueue_delete$36=function(){for(var self=this,group=nil,data=nil,$ret_or_2=nil,text=nil;$truthy($rb_lt(self.maxwidth,$rb_plus(self.output_width,self.buffer_width)));){if(!$truthy(group=self.group_queue.$deq()))return nil;for(;!$truthy(group.$breakables()["$empty?"]());)data=self.buffer.$shift(),self.output_width=data.$output(self.output,self.output_width),self.buffer_width=$rb_minus(self.buffer_width,data.$width());for(;$truthy($truthy($ret_or_2=self.buffer["$empty?"]()["$!"]())?$$($nesting,"Text")["$==="](self.buffer.$first()):$ret_or_2);)text=self.buffer.$shift(),self.output_width=text.$output(self.output,self.output_width),self.buffer_width=$rb_minus(self.buffer_width,text.$width())}},$GroupQueue_delete$36.$$arity=0),Opal.def($GroupQueue_deq$32,"$text",$GroupQueue_delete$36=function(obj,width){var text=nil;return null==width&&(width=obj.$length()),$truthy(this.buffer["$empty?"]())?(this.output["$<<"](obj),this.output_width=$rb_plus(this.output_width,width)):(text=this.buffer.$last(),$truthy($$($nesting,"Text")["$==="](text))||(text=$$($nesting,"Text").$new(),this.buffer["$<<"](text)),text.$add(obj,width),this.buffer_width=$rb_plus(this.buffer_width,width),this.$break_outmost_groups())},$GroupQueue_delete$36.$$arity=-2),Opal.def($GroupQueue_deq$32,"$fill_breakable",$GroupQueue_delete$36=function(sep,width){var $$10;return null==sep&&(sep=" "),null==width&&(width=sep.$length()),$send(this,"group",[],(($$10=function(){return(null==$$10.$$s?this:$$10.$$s).$breakable(sep,width)}).$$s=this,$$10.$$arity=0,$$10))},$GroupQueue_delete$36.$$arity=-1),Opal.def($GroupQueue_deq$32,"$breakable",$GroupQueue_delete$36=function(sep,width){var group=nil;return null==sep&&(sep=" "),null==width&&(width=sep.$length()),group=this.group_stack.$last(),$truthy(group["$break?"]())?(this.$flush(),this.output["$<<"](this.newline),this.output["$<<"](this.genspace.$call(this.indent)),this.output_width=this.indent,this.buffer_width=0):(this.buffer["$<<"]($$($nesting,"Breakable").$new(sep,width,this)),this.buffer_width=$rb_plus(this.buffer_width,width),this.$break_outmost_groups())},$GroupQueue_delete$36.$$arity=-1),Opal.def($GroupQueue_deq$32,"$group",$PrettyPrint_group$12=function(indent,open_obj,close_obj,open_width,close_width){var $$13,$iter=$PrettyPrint_group$12.$$p,$yield=$iter||nil;return $iter&&($PrettyPrint_group$12.$$p=null),null==indent&&(indent=0),null==open_obj&&(open_obj=""),null==close_obj&&(close_obj=""),null==open_width&&(open_width=open_obj.$length()),null==close_width&&(close_width=close_obj.$length()),this.$text(open_obj,open_width),$send(this,"group_sub",[],(($$13=function(){var $$14,self=null==$$13.$$s?this:$$13.$$s;return $send(self,"nest",[indent],(($$14=function(){null==$$14.$$s||$$14.$$s;return Opal.yieldX($yield,[])}).$$s=self,$$14.$$arity=0,$$14))}).$$s=this,$$13.$$arity=0,$$13)),this.$text(close_obj,close_width)},$PrettyPrint_group$12.$$arity=-1),Opal.def($GroupQueue_deq$32,"$group_sub",$PrettyPrint_group_sub$15=function(){var $iter=$PrettyPrint_group_sub$15.$$p,$yield=$iter||nil,self=this,group=nil;return $iter&&($PrettyPrint_group_sub$15.$$p=null),group=$$($nesting,"Group").$new($rb_plus(self.group_stack.$last().$depth(),1)),self.group_stack.$push(group),self.group_queue.$enq(group),function(){try{return Opal.yieldX($yield,[])}finally{self.group_stack.$pop(),$truthy(group.$breakables()["$empty?"]())&&self.group_queue.$delete(group)}}()},$PrettyPrint_group_sub$15.$$arity=0),Opal.def($GroupQueue_deq$32,"$nest",$PrettyPrint_nest$16=function(indent){var $iter=$PrettyPrint_nest$16.$$p,$yield=$iter||nil,self=this;return $iter&&($PrettyPrint_nest$16.$$p=null),self.indent=$rb_plus(self.indent,indent),function(){try{return Opal.yieldX($yield,[])}finally{self.indent=$rb_minus(self.indent,indent)}}()},$PrettyPrint_nest$16.$$arity=1),Opal.def($GroupQueue_deq$32,"$flush",$GroupQueue_delete$36=function(){var $$18;return $send(this.buffer,"each",[],(($$18=function(data){var self=null==$$18.$$s?this:$$18.$$s;return null==self.output&&(self.output=nil),null==self.output_width&&(self.output_width=nil),null==data&&(data=nil),self.output_width=data.$output(self.output,self.output_width)}).$$s=this,$$18.$$arity=1,$$18)),this.buffer.$clear(),this.buffer_width=0},$GroupQueue_delete$36.$$arity=0),$GroupQueue_deq$32=$nesting[0],$GroupQueue_delete$36=$nesting,[$GroupQueue_deq$32=$klass($GroupQueue_deq$32,null,"Text")].concat($GroupQueue_delete$36),$GroupQueue_deq$32.$$prototype.objs=$GroupQueue_deq$32.$$prototype.width=nil,Opal.def($GroupQueue_deq$32,"$initialize",$GroupQueue_delete$36=function(){return this.objs=[],this.width=0},$GroupQueue_delete$36.$$arity=0),$GroupQueue_deq$32.$attr_reader("width"),Opal.def($GroupQueue_deq$32,"$output",$GroupQueue_delete$36=function(out,output_width){var $$21;return $send(this.objs,"each",[],(($$21=function(obj){null==$$21.$$s||$$21.$$s;return null==obj&&(obj=nil),out["$<<"](obj)}).$$s=this,$$21.$$arity=1,$$21)),$rb_plus(output_width,this.width)},$GroupQueue_delete$36.$$arity=2),Opal.def($GroupQueue_deq$32,"$add",$GroupQueue_deq$32=function(obj,width){return this.objs["$<<"](obj),this.width=$rb_plus(this.width,width)},$GroupQueue_deq$32.$$arity=2),$GroupQueue_delete$36=$nesting[0],$GroupQueue_deq$32=$nesting,[$GroupQueue_delete$36=$klass($GroupQueue_delete$36,null,"Breakable")].concat($GroupQueue_deq$32),$GroupQueue_delete$36.$$prototype.group=$GroupQueue_delete$36.$$prototype.pp=$GroupQueue_delete$36.$$prototype.indent=$GroupQueue_delete$36.$$prototype.obj=$GroupQueue_delete$36.$$prototype.width=nil,Opal.def($GroupQueue_delete$36,"$initialize",$GroupQueue_deq$32=function(sep,width,q){return this.obj=sep,this.width=width,this.pp=q,this.indent=q.$indent(),this.group=q.$current_group(),this.group.$breakables().$push(this)},$GroupQueue_deq$32.$$arity=3),$GroupQueue_delete$36.$attr_reader("obj"),$GroupQueue_delete$36.$attr_reader("width"),$GroupQueue_delete$36.$attr_reader("indent"),Opal.def($GroupQueue_delete$36,"$output",$GroupQueue_delete$36=function(out,output_width){return this.group.$breakables().$shift(),$truthy(this.group["$break?"]())?(out["$<<"](this.pp.$newline()),out["$<<"](this.pp.$genspace().$call(this.indent)),this.indent):($truthy(this.group.$breakables()["$empty?"]())&&this.pp.$group_queue().$delete(this.group),out["$<<"](this.obj),$rb_plus(output_width,this.width))},$GroupQueue_delete$36.$$arity=2),$GroupQueue_deq$32=$nesting[0],$GroupQueue_delete$36=$nesting,[$GroupQueue_deq$32=$klass($GroupQueue_deq$32,null,"Group")].concat($GroupQueue_delete$36),$GroupQueue_deq$32.$$prototype.break=nil,Opal.def($GroupQueue_deq$32,"$initialize",$GroupQueue_delete$36=function(depth){return this.depth=depth,this.breakables=[],this.break=!1},$GroupQueue_delete$36.$$arity=1),$GroupQueue_deq$32.$attr_reader("depth"),$GroupQueue_deq$32.$attr_reader("breakables"),Opal.def($GroupQueue_deq$32,"$break",$GroupQueue_delete$36=function(){return this.break=!0},$GroupQueue_delete$36.$$arity=0),Opal.def($GroupQueue_deq$32,"$break?",$GroupQueue_delete$36=function(){return this.break},$GroupQueue_delete$36.$$arity=0),Opal.def($GroupQueue_deq$32,"$first?",$GroupQueue_deq$32=function(){var $a;return!$truthy(null!=($a=this.first)&&$a!==nil?"instance-variable":nil)&&!(this.first=!1)},$GroupQueue_deq$32.$$arity=0),$GroupQueue_delete$36=$nesting[0],$GroupQueue_deq$32=$nesting,[$GroupQueue_delete$36=$klass($GroupQueue_delete$36,null,"GroupQueue")].concat($GroupQueue_deq$32),$GroupQueue_delete$36.$$prototype.queue=nil,Opal.def($GroupQueue_delete$36,"$initialize",$GroupQueue_deq$32=function($a){var $$30,groups=Opal.slice.call(arguments,0,arguments.length);return this.queue=[],$send(groups,"each",[],(($$30=function(g){var self=null==$$30.$$s?this:$$30.$$s;return null==g&&(g=nil),self.$enq(g)}).$$s=this,$$30.$$arity=1,$$30))},$GroupQueue_deq$32.$$arity=-1),Opal.def($GroupQueue_delete$36,"$enq",$GroupQueue_deq$32=function(group){for(var depth=group.$depth();!$truthy($rb_lt(depth,this.queue.$length()));)this.queue["$<<"]([]);return this.queue["$[]"](depth)["$<<"](group)},$GroupQueue_deq$32.$$arity=1),Opal.def($GroupQueue_delete$36,"$deq",$GroupQueue_deq$32=function(){try{var $$33;return $send(this.queue,"each",[],(($$33=function(gs){var $$34,$$35,self=null==$$33.$$s?this:$$33.$$s;return null==gs&&(gs=nil),$send($rb_minus(gs.$length(),1),"downto",[0],(($$34=function(i){null==$$34.$$s||$$34.$$s;var group=nil;if(null==i&&(i=nil),$truthy(gs["$[]"](i).$breakables()["$empty?"]()))return nil;(group=gs["$slice!"](i,1).$first()).$break(),Opal.ret(group)}).$$s=self,$$34.$$arity=1,$$34)),$send(gs,"each",[],(($$35=function(group){null==$$35.$$s||$$35.$$s;return null==group&&(group=nil),group.$break()}).$$s=self,$$35.$$arity=1,$$35)),gs.$clear()}).$$s=this,$$33.$$arity=1,$$33)),nil}catch($returner){if($returner===Opal.returner)return $returner.$v;throw $returner}},$GroupQueue_deq$32.$$arity=0),Opal.def($GroupQueue_delete$36,"$delete",$GroupQueue_delete$36=function(group){return this.queue["$[]"](group.$depth()).$delete(group)},$GroupQueue_delete$36.$$arity=1),function($SingleLine_first$ques$43,$SingleLine_flush$42){var $SingleLine_nest$40,$SingleLine_group$41,$SingleLine_first$ques$43=$klass($SingleLine_first$ques$43,null,"SingleLine");[$SingleLine_first$ques$43].concat($SingleLine_flush$42);return $SingleLine_first$ques$43.$$prototype.output=$SingleLine_first$ques$43.$$prototype.first=nil,Opal.def($SingleLine_first$ques$43,"$initialize",$SingleLine_flush$42=function(output,maxwidth,newline){return null==maxwidth&&(maxwidth=nil),null==newline&&(newline=nil),this.output=output,this.first=[!0]},$SingleLine_flush$42.$$arity=-2),Opal.def($SingleLine_first$ques$43,"$text",$SingleLine_flush$42=function(obj,width){return null==width&&(width=nil),this.output["$<<"](obj)},$SingleLine_flush$42.$$arity=-2),Opal.def($SingleLine_first$ques$43,"$breakable",$SingleLine_flush$42=function(sep,width){return null==sep&&(sep=" 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+Opal.modules.thread=function(Opal){var $nesting=[],$$=Opal.$r($nesting),nil=Opal.nil,$$$=Opal.$$$,$klass=Opal.klass,$truthy=Opal.truthy,$defs=Opal.defs,$def=Opal.def,$send=Opal.send,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$hash2=Opal.hash2,$Opal=Opal.Opal,$alias=Opal.alias,$const_set=Opal.const_set;return Opal.add_stubs("allocate,core_initialize!,current,raise,[],coerce_key_name,[]=,-,key?,keys,private,coerce_to!,clear,empty?,size,shift,push,each,to_proc,=~,last_match,to_i,inspect,attr_reader,locked?,lock,unlock"),$klass($nesting[0],$$("StandardError"),"ThreadError"),function($base,$super,$parent_nesting){var self=$klass($base,null,"Thread"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;$proto.fiber_locals=$proto.thread_locals=nil,$defs(self,"$current",(function(){return 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$writer;return $writer=[this.$coerce_key_name(key),value],$send(this.thread_locals,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]}),2),$def(self,"$thread_variable?",(function(key){return this.thread_locals["$key?"](this.$coerce_key_name(key))}),1),$def(self,"$thread_variables",(function(){return this.thread_locals.$keys()}),0),self.$private(),$def(self,"$core_initialize!",(function(){return this.thread_locals=$hash2([],{}),this.fiber_locals=$hash2([],{})}),0),$def(self,"$coerce_key_name",(function(key){return $Opal["$coerce_to!"](key,$$("String"),"to_s")}),1),function($base,$super,$parent_nesting){var self=$klass($base,null,"Queue"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);self.$$prototype.storage=nil,$def(self,"$initialize",(function(){return this.$clear()}),0),$def(self,"$clear",(function(){return this.storage=[]}),0),$def(self,"$empty?",(function(){return this.storage["$empty?"]()}),0),$def(self,"$size",(function(){return 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this.str=str,str["$=~"](/^(.*?):(\d+):(\d+):in `(.*?)'$/),this.path=$$("Regexp").$last_match(1),this.label=$$("Regexp").$last_match(4),this.lineno=$$("Regexp").$last_match(2).$to_i(),this.label["$=~"](/(\w+)$/),this.base_label=$truthy($ret_or_1=$$("Regexp").$last_match(1))?$ret_or_1:this.label}),1),$def(self,"$to_s",(function(){return this.str}),0),$def(self,"$inspect",(function(){return this.str.$inspect()}),0),self.$attr_reader("base_label","label","lineno","path"),$alias(self,"absolute_path","path")})($nesting[0],0,$nesting)}($nesting[0],0,$nesting)}($nesting[0],0,$nesting),$const_set($nesting[0],"Queue",$$$($$("Thread"),"Queue")),function($base,$super,$parent_nesting){var self=$klass($base,null,"Mutex"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return self.$$prototype.locked=nil,$def(self,"$initialize",(function(){return this.locked=!1}),0),$def(self,"$lock",(function(){return $truthy(this.locked)&&this.$raise($$("ThreadError"),"Deadlock"),this.locked=!0,this}),0),$def(self,"$locked?",(function(){return this.locked}),0),$def(self,"$owned?",(function(){return this.locked}),0),$def(self,"$try_lock",(function(){return!$truthy(this["$locked?"]())&&(this.$lock(),!0)}),0),$def(self,"$unlock",(function(){return $truthy(this.locked)||this.$raise($$("ThreadError"),"Mutex not locked"),this.locked=!1,this}),0),$def(self,"$synchronize",(function $$synchronize(){var $yield=$$synchronize.$$p||nil,self=this;return delete $$synchronize.$$p,self.$lock(),function(){try{return Opal.yieldX($yield,[])}finally{self.$unlock()}}()}),0)}($nesting[0],0,$nesting)},Opal.modules.stringio=function(Opal){var $nesting=[],$$=Opal.$r($nesting),nil=Opal.nil,$$$=Opal.$$$,$klass=Opal.klass,$defs=Opal.defs,$send2=Opal.send2,$find_super=Opal.find_super,$def=Opal.def,$eqeqeq=Opal.eqeqeq,$truthy=Opal.truthy,$rb_ge=Opal.rb_ge,$rb_gt=Opal.rb_gt,$rb_plus=Opal.rb_plus,$rb_minus=Opal.rb_minus,$eqeq=Opal.eqeq,$alias=Opal.alias;return Opal.add_stubs("new,call,close,attr_accessor,check_readable,==,length,===,>=,raise,>,+,-,seek,check_writable,String,[],eof?,write,read"),function($base,$super,$parent_nesting){var self=$klass($base,$super,"StringIO"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;return $proto.position=$proto.string=nil,$defs(self,"$open",(function $$open(string,mode){var res,block=$$open.$$p||nil,io=nil;return delete $$open.$$p,null==string&&(string=""),null==mode&&(mode=nil),io=this.$new(string,mode),res=block.$call(io),io.$close(),res}),-1),self.$attr_accessor("string"),$def(self,"$initialize",(function $$initialize(string,mode){return delete $$initialize.$$p,null==string&&(string=""),null==mode&&(mode="rw"),this.string=string,this.position=0,$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[nil,mode],null)}),-1),$def(self,"$eof?",(function(){return this.$check_readable(),this.position["$=="](this.string.$length())}),0),$def(self,"$seek",(function(pos,whence){var $ret_or_1;return null==whence&&(whence=$$$($$("IO"),"SEEK_SET")),this.read_buffer="",$eqeqeq($$$($$("IO"),"SEEK_SET"),$ret_or_1=whence)?($truthy($rb_ge(pos,0))||this.$raise($$$($$("Errno"),"EINVAL")),this.position=pos):$eqeqeq($$$($$("IO"),"SEEK_CUR"),$ret_or_1)?$truthy($rb_gt($rb_plus(this.position,pos),this.string.$length()))?this.position=this.string.$length():this.position=$rb_plus(this.position,pos):$eqeqeq($$$($$("IO"),"SEEK_END"),$ret_or_1)&&($truthy($rb_gt(pos,this.string.$length()))?this.position=0:this.position=$rb_minus(this.position,pos)),0}),-2),$def(self,"$tell",(function(){return 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null==length&&(length=nil),null==outbuf&&(outbuf=nil),this.$check_readable(),$truthy(this["$eof?"]())?nil:(string=$truthy(length)?(str=this.string["$[]"](this.position,length),this.position=$rb_plus(this.position,length),$truthy($rb_gt(this.position,this.string.$length()))&&(this.position=this.string.$length()),str):(str=this.string["$[]"](Opal.Range.$new(this.position,-1,!1)),this.position=this.string.$length(),str),$truthy(outbuf)?outbuf.$write(string):string)}),-1),$def(self,"$sysread",(function(length){return this.$check_readable(),this.$read(length)}),1),$alias(self,"eof","eof?"),$alias(self,"pos","tell"),$alias(self,"pos=","seek"),$alias(self,"readpartial","read")}($nesting[0],$$("IO"),$nesting)},Opal.modules.prettyprint=function(Opal){var $nesting=[],nil=Opal.nil,$klass=Opal.klass,$send=Opal.send,$rb_times=Opal.rb_times,$defs=Opal.defs,$truthy=Opal.truthy,$def=Opal.def,$rb_lt=Opal.rb_lt,$rb_plus=Opal.rb_plus,$rb_minus=Opal.rb_minus,$eqeqeq=Opal.eqeqeq,$to_a=Opal.to_a;return Opal.add_stubs("dup,lambda,*,new,to_proc,flush,attr_reader,last,<,+,deq,empty?,breakables,shift,output,-,width,!,===,first,length,<<,add,break_outmost_groups,group,breakable,break?,call,text,group_sub,nest,depth,push,enq,pop,delete,each,clear,indent,current_group,newline,genspace,group_queue,[],downto,slice!,break,[]="),function($base,$super,$parent_nesting){var self=$klass($base,null,"PrettyPrint"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;return $proto.group_stack=$proto.maxwidth=$proto.output_width=$proto.buffer_width=$proto.group_queue=$proto.buffer=$proto.output=$proto.newline=$proto.genspace=$proto.indent=nil,$defs($$("PrettyPrint"),"$format",(function $$format(output,maxwidth,newline,genspace){var $yield=$$format.$$p||nil,q=nil;return delete $$format.$$p,null==output&&(output="".$dup()),null==maxwidth&&(maxwidth=79),null==newline&&(newline="\n"),null==genspace&&(genspace=$send(this,"lambda",[],(function(n){return null==n&&(n=nil),$rb_times(" ",n)}),1)),q=$send($$("PrettyPrint"),"new",[output,maxwidth,newline],genspace.$to_proc()),Opal.yield1($yield,q),q.$flush(),output}),-1),$defs($$("PrettyPrint"),"$singleline_format",(function $$singleline_format(output,maxwidth,newline,genspace){var q,$yield=$$singleline_format.$$p||nil;return delete $$singleline_format.$$p,null==output&&(output="".$dup()),null==maxwidth&&(maxwidth=nil),null==newline&&(newline=nil),null==genspace&&(genspace=nil),q=$$("SingleLine").$new(output),Opal.yield1($yield,q),output}),-1),$def(self,"$initialize",(function $$initialize(output,maxwidth,newline){var $ret_or_1,root_group,genspace=$$initialize.$$p||nil;return delete $$initialize.$$p,null==output&&(output="".$dup()),null==maxwidth&&(maxwidth=79),null==newline&&(newline="\n"),this.output=output,this.maxwidth=maxwidth,this.newline=newline,this.genspace=$truthy($ret_or_1=genspace)?$ret_or_1:$send(this,"lambda",[],(function(n){return null==n&&(n=nil),$rb_times(" 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nil;for(;!$truthy(group.$breakables()["$empty?"]());)data=this.buffer.$shift(),this.output_width=data.$output(this.output,this.output_width),this.buffer_width=$rb_minus(this.buffer_width,data.$width());for(;$truthy($truthy($ret_or_1=this.buffer["$empty?"]()["$!"]())?$$("Text")["$==="](this.buffer.$first()):$ret_or_1);)text=this.buffer.$shift(),this.output_width=text.$output(this.output,this.output_width),this.buffer_width=$rb_minus(this.buffer_width,text.$width())}}),0),$def(self,"$text",(function(obj,width){var text=nil;return null==width&&(width=obj.$length()),$truthy(this.buffer["$empty?"]())?(this.output["$<<"](obj),this.output_width=$rb_plus(this.output_width,width)):(text=this.buffer.$last(),$eqeqeq($$("Text"),text)||(text=$$("Text").$new(),this.buffer["$<<"](text)),text.$add(obj,width),this.buffer_width=$rb_plus(this.buffer_width,width),this.$break_outmost_groups())}),-2),$def(self,"$fill_breakable",(function(sep,width){return null==sep&&(sep=" 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self=$klass($base,null,"Group");self.$$prototype.break=nil,$def(self,"$initialize",(function(depth){return this.depth=depth,this.breakables=[],this.break=!1}),1),self.$attr_reader("depth"),self.$attr_reader("breakables"),$def(self,"$break",(function(){return this.break=!0}),0),$def(self,"$break?",(function(){return this.break}),0),$def(self,"$first?",(function(){var $a;return!$truthy(($a=this.first,null!=$a&&$a!==nil?"instance-variable":nil))&&(this.first=!1,!0)}),0)}($nesting[0]),function($base,$super){var self=$klass($base,null,"GroupQueue");self.$$prototype.queue=nil,$def(self,"$initialize",(function($a){var groups,self=this;return groups=Opal.slice.call(arguments),self.queue=[],$send(groups,"each",[],(function $$11(g){return null==g&&(g=nil),(null==$$11.$$s?this:$$11.$$s).$enq(g)}),{$$arity:1,$$s:self})}),-1),$def(self,"$enq",(function(group){var depth;for(depth=group.$depth();!$truthy($rb_lt(depth,this.queue.$length()));)this.queue["$<<"]([]);return 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result=this.first["$[]"](-1),$writer=[-1,!1],$send(this.first,"[]=",$to_a($writer)),$rb_minus($writer.length,1),result}),0)}($nesting[0])}($nesting[0],0,$nesting)},Opal.modules.pp=function(Opal){var self=Opal.top,$nesting=[],$$=Opal.$r($nesting),nil=Opal.nil,$$$=Opal.$$$,$klass=Opal.klass,$gvars=Opal.gvars,$send=Opal.send,$defs=Opal.defs,$to_a=Opal.to_a,$module=Opal.module,$eqeq=Opal.eqeq,$hash2=Opal.hash2,$rb_minus=Opal.rb_minus,$def=Opal.def,$truthy=Opal.truthy,$rb_plus=Opal.rb_plus,$eqeqeq=Opal.eqeqeq,$neqeq=Opal.neqeq,$not=Opal.not,$rb_gt=Opal.rb_gt,$rb_le=Opal.rb_le;return Opal.add_stubs("require,new,guard_inspect_key,pp,flush,<<,bind_call,instance_method,to_proc,attr_accessor,==,[],current,compare_by_identity,[]=,-,include?,delete,text,is_a?,__getobj__,check_inspect_key,group,pretty_print_cycle,push_inspect_key,pretty_print,sharing_detection,pop_inspect_key,+,name,class,chomp,breakable,lambda,comma_breakable,__send__,call,object_address_group,seplist,pretty_print_instance_variables,===,to_s,instance_eval,include,!=,owner,inspect,respond_to?,!,pp_object,sort,instance_variables,raise,singleline_pp,dup,empty?,pp_hash,each,keys,sprintf,mcall,begin,exclude_end?,end,lines,>,size,named_captures,regexp,object_group,class_eval,string,<=,first,module_function"),self.$require("thread"),self.$require("stringio"),self.$require("prettyprint"),function($base,$super,$parent_nesting){var self=$klass($base,$super,"PP"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);$defs($$("PP"),"$pp",(function(obj,out,width){var q=nil;return null==$gvars.stdout&&($gvars.stdout=nil),null==out&&(out=$gvars.stdout),null==width&&(width=79),q=$$("PP").$new(out,width),$send(q,"guard_inspect_key",[],(function(){return q.$pp(obj)}),0),q.$flush(),out["$<<"]("\n")}),-2),$defs($$("PP"),"$singleline_pp",(function(obj,out){var q=nil;return null==$gvars.stdout&&($gvars.stdout=nil),null==out&&(out=$gvars.stdout),q=$$("SingleLine").$new(out),$send(q,"guard_inspect_key",[],(function(){return q.$pp(obj)}),0),q.$flush(),out}),-2),$defs($$("PP"),"$mcall",(function $$mcall(obj,mod,meth,$a){var args,block=$$mcall.$$p||nil;return delete $$mcall.$$p,args=Opal.slice.call(arguments,3),$send(mod.$instance_method(meth),"bind_call",[obj].concat($to_a(args)),block.$to_proc())}),-4),self.sharing_detection=!1,function(self,$parent_nesting){self.$attr_accessor("sharing_detection")}(Opal.get_singleton_class(self)),function($base,$parent_nesting){var self=$module($base,"PPMethods"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);$def(self,"$guard_inspect_key",(function $$guard_inspect_key(){var save,$yield=$$guard_inspect_key.$$p||nil,$writer=nil;return delete $$guard_inspect_key.$$p,$eqeq($$("Thread").$current()["$[]"]("__recursive_key__"),nil)&&($writer=["__recursive_key__",$hash2([],{}).$compare_by_identity()],$send($$("Thread").$current(),"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]),$eqeq($$("Thread").$current()["$[]"]("__recursive_key__")["$[]"]("inspect"),nil)&&($writer=["inspect",$hash2([],{}).$compare_by_identity()],$send($$("Thread").$current()["$[]"]("__recursive_key__"),"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]),save=$$("Thread").$current()["$[]"]("__recursive_key__")["$[]"]("inspect"),function(){try{return $writer=["inspect",$hash2([],{}).$compare_by_identity()],$send($$("Thread").$current()["$[]"]("__recursive_key__"),"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],Opal.yieldX($yield,[])}finally{$writer=["inspect",save],$send($$("Thread").$current()["$[]"]("__recursive_key__"),"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]}}()}),0),$def(self,"$check_inspect_key",(function(id){var $ret_or_1,$ret_or_2;return $truthy($ret_or_1=$truthy($ret_or_2=$$("Thread").$current()["$[]"]("__recursive_key__"))?$$("Thread").$current()["$[]"]("__recursive_key__")["$[]"]("inspect"):$ret_or_2)?$$("Thread").$current()["$[]"]("__recursive_key__")["$[]"]("inspect")["$include?"](id):$ret_or_1}),1),$def(self,"$push_inspect_key",(function(id){var $writer;return $writer=[id,!0],$send($$("Thread").$current()["$[]"]("__recursive_key__")["$[]"]("inspect"),"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]}),1),$def(self,"$pop_inspect_key",(function(id){return $$("Thread").$current()["$[]"]("__recursive_key__")["$[]"]("inspect").$delete(id)}),1),$def(self,"$pp",(function(obj){try{var self=this;return null===obj?(self.$text("null"),Opal.ret(nil)):void 0===obj?(self.$text("undefined"),Opal.ret(nil)):void 0===obj.$$class&&(self.$text(Object.prototype.toString.apply(obj)),Opal.ret(nil)),$truthy($$$("::","Delegator","skip_raise")?"constant":nil)&&$truthy(obj["$is_a?"]($$$("Delegator")))&&(obj=obj.$__getobj__()),$truthy(self.$check_inspect_key(obj))?($send(self,"group",[],(function $$3(){var self=null==$$3.$$s?this:$$3.$$s;return obj.$pretty_print_cycle(self)}),{$$arity:0,$$s:self}),nil):function(){try{return self.$push_inspect_key(obj),$send(self,"group",[],(function $$4(){var self=null==$$4.$$s?this:$$4.$$s;return obj.$pretty_print(self)}),{$$arity:0,$$s:self})}finally{$truthy($$("PP").$sharing_detection())||self.$pop_inspect_key(obj)}}()}catch($returner){if($returner===Opal.returner)return $returner.$v;throw $returner}}),-1),$def(self,"$object_group",(function $$object_group(obj){var block=$$object_group.$$p||nil;return delete $$object_group.$$p,$send(this,"group",[1,$rb_plus("#<",obj.$class().$name()),">"],block.$to_proc())}),1),$def(self,"$object_address_group",(function $$object_address_group(obj){var block=$$object_address_group.$$p||nil,str=nil;return delete $$object_address_group.$$p,str=(str=$$("Kernel").$instance_method("to_s").$bind_call(obj)).$chomp(">"),$send(this,"group",[1,str,">"],block.$to_proc())}),1),$def(self,"$comma_breakable",(function(){return this.$text(","),this.$breakable()}),0),$def(self,"$seplist",(function $$seplist(list,sep,iter_method){var $ret_or_1,$yield=$$seplist.$$p||nil,first=nil;return delete $$seplist.$$p,null==sep&&(sep=nil),null==iter_method&&(iter_method="each"),sep=$truthy($ret_or_1=sep)?$ret_or_1:$send(this,"lambda",[],(function $$5(){return(null==$$5.$$s?this:$$5.$$s).$comma_breakable()}),{$$arity:0,$$s:this}),first=!0,$send(list,"__send__",[iter_method],(function($a){var v;return v=Opal.slice.call(arguments),$truthy(first)?first=!1:sep.$call(),Opal.yieldX($yield,$to_a(v))}),-1)}),-2),$def(self,"$pp_object",(function(obj){return $send(this,"object_address_group",[obj],(function $$7(){var self=null==$$7.$$s?this:$$7.$$s;return $send(self,"seplist",[obj.$pretty_print_instance_variables(),$send(self,"lambda",[],(function $$8(){return(null==$$8.$$s?this:$$8.$$s).$text(",")}),{$$arity:0,$$s:self})],(function $$9(v){var self=null==$$9.$$s?this:$$9.$$s;return null==v&&(v=nil),self.$breakable(),$eqeqeq($$("Symbol"),v)&&(v=v.$to_s()),self.$text(v),self.$text("="),$send(self,"group",[1],(function $$10(){var self=null==$$10.$$s?this:$$10.$$s;return self.$breakable(""),self.$pp(obj.$instance_eval(v))}),{$$arity:0,$$s:self})}),{$$arity:1,$$s:self})}),{$$arity:0,$$s:this})}),1),$def(self,"$pp_hash",(function(obj){return $send(this,"group",[1,"{","}"],(function $$11(){var self=null==$$11.$$s?this:$$11.$$s;return $send(self,"seplist",[obj,nil,"each_pair"],(function $$12(k,v){var self=null==$$12.$$s?this:$$12.$$s;return null==k&&(k=nil),null==v&&(v=nil),$send(self,"group",[],(function $$13(){var self=null==$$13.$$s?this:$$13.$$s;return self.$pp(k),self.$text("=>"),$send(self,"group",[1],(function $$14(){var self=null==$$14.$$s?this:$$14.$$s;return self.$breakable(""),self.$pp(v)}),{$$arity:0,$$s:self})}),{$$arity:0,$$s:self})}),{$$arity:2,$$s:self})}),{$$arity:0,$$s:this})}),1)}($nesting[0],$nesting),self.$include($$("PPMethods")),function($base,$super,$parent_nesting){var self=$klass($base,$super,"SingleLine"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);self.$include($$("PPMethods"))}($nesting[0],$$$($$("PrettyPrint"),"SingleLine"),$nesting),function($base,$parent_nesting){var self=$module($base,"ObjectMixin"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);$def(self,"$pretty_print",(function(q){var umethod_method=nil,inspect_method=nil;umethod_method=$$("Object").$instance_method("method");try{inspect_method=umethod_method.$bind_call(this,"inspect")}catch($err){if(!Opal.rescue($err,[$$("NameError")]))throw $err;Opal.pop_exception()}return $truthy(inspect_method)&&$neqeq(inspect_method.$owner(),$$("Kernel"))||$not(inspect_method)&&$truthy(this["$respond_to?"]("inspect"))?q.$text(this.$inspect()):q.$pp_object(this)}),1),$def(self,"$pretty_print_cycle",(function(q){return $send(q,"object_address_group",[this],(function(){return q.$breakable(),q.$text("...")}),0)}),1),$def(self,"$pretty_print_instance_variables",(function(){return this.$instance_variables().$sort()}),0),$def(self,"$pretty_print_inspect",(function(){return $eqeq($$("Object").$instance_method("method").$bind_call(this,"pretty_print").$owner(),$$$($$("PP"),"ObjectMixin"))&&this.$raise("pretty_print is not overridden for "+this.$class()),$$("PP").$singleline_pp(this,"".$dup())}),0)}($nesting[0],$nesting)}($nesting[0],$$("PrettyPrint"),$nesting),function($base,$super){var self=$klass($base,null,"Array");$def(self,"$pretty_print",(function(q){return $send(q,"group",[1,"[","]"],(function $$16(){return $send(q,"seplist",[null==$$16.$$s?this:$$16.$$s],(function(v){return null==v&&(v=nil),q.$pp(v)}),1)}),{$$arity:0,$$s:this})}),1),$def(self,"$pretty_print_cycle",(function(q){return q.$text($truthy(this["$empty?"]())?"[]":"[...]")}),1)}($nesting[0]),function($base,$super){var self=$klass($base,null,"Hash");$def(self,"$pretty_print",(function(q){return q.$pp_hash(this)}),1),$def(self,"$pretty_print_cycle",(function(q){return q.$text($truthy(this["$empty?"]())?"{}":"{...}")}),1)}($nesting[0]),function(self,$parent_nesting){var $nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);$def(self,"$pretty_print",(function(q){var h;return h=$hash2([],{}),$send($$("ENV").$keys().$sort(),"each",[],(function(k){var $writer;return null==k&&(k=nil),$writer=[k,$$("ENV")["$[]"](k)],$send(h,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]}),1),q.$pp_hash(h)}),1)}(Opal.get_singleton_class($$("ENV")),$nesting),function($base,$super,$parent_nesting){var self=$klass($base,null,"Struct"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);$def(self,"$pretty_print",(function(q){return $send(q,"group",[1,this.$sprintf("#<struct %s",$$("PP").$mcall(this,$$("Kernel"),"class").$name()),">"],(function $$19(){var self=null==$$19.$$s?this:$$19.$$s;return $send(q,"seplist",[$$("PP").$mcall(self,$$("Struct"),"members"),$send(self,"lambda",[],(function(){return q.$text(",")}),0)],(function $$21(member){var self=null==$$21.$$s?this:$$21.$$s;return null==member&&(member=nil),q.$breakable(),q.$text(member.$to_s()),q.$text("="),$send(q,"group",[1],(function $$22(){var self=null==$$22.$$s?this:$$22.$$s;return q.$breakable(""),q.$pp(self["$[]"](member))}),{$$arity:0,$$s:self})}),{$$arity:1,$$s:self})}),{$$arity:0,$$s:this})}),1),$def(self,"$pretty_print_cycle",(function(q){return q.$text(this.$sprintf("#<struct %s:...>",$$("PP").$mcall(this,$$("Kernel"),"class").$name()))}),1)}($nesting[0],0,$nesting),function($base,$super){var self=$klass($base,null,"Range");$def(self,"$pretty_print",(function(q){return q.$pp(this.$begin()),q.$breakable(""),q.$text($truthy(this["$exclude_end?"]())?"...":".."),q.$breakable(""),$truthy(this.$end())?q.$pp(this.$end()):nil}),1)}($nesting[0]),function($base,$super){var self=$klass($base,null,"String");$def(self,"$pretty_print",(function(q){var lines=nil;return lines=this.$lines(),$truthy($rb_gt(lines.$size(),1))?$send(q,"group",[0,"",""],(function $$23(){return $send(q,"seplist",[lines,$send(null==$$23.$$s?this:$$23.$$s,"lambda",[],(function(){return q.$text(" +"),q.$breakable()}),0)],(function(v){return null==v&&(v=nil),q.$pp(v)}),1)}),{$$arity:0,$$s:this}):q.$text(this.$inspect())}),1)}($nesting[0]),function($base,$super){var self=$klass($base,null,"MatchData");$def(self,"$pretty_print",(function(q){var nc=nil;return nc=[],$send(this.$regexp().$named_captures(),"each",[],(function(name,indexes){return null==name&&(name=nil),null==indexes&&(indexes=nil),$send(indexes,"each",[],(function(i){var $writer;return null==i&&(i=nil),$send(nc,"[]=",$to_a($writer=[i,name])),$writer[$rb_minus($writer.length,1)]}),1)}),2),$send(q,"object_group",[this],(function $$28(){var self=null==$$28.$$s?this:$$28.$$s;return q.$breakable(),$send(q,"seplist",[Opal.Range.$new(0,self.$size(),!0),$send(self,"lambda",[],(function(){return q.$breakable()}),0)],(function $$30(i){var self=null==$$30.$$s?this:$$30.$$s;return null==i&&(i=nil),$eqeq(i,0)||($truthy(nc["$[]"](i))?q.$text(nc["$[]"](i)):q.$pp(i),q.$text(":")),q.$pp(self["$[]"](i))}),{$$arity:1,$$s:self})}),{$$arity:0,$$s:this})}),1)}($nesting[0]),function($base,$super,$parent_nesting){var self=$klass($base,$super,"Object"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);self.$include($$$($$("PP"),"ObjectMixin"))}($nesting[0],$$("BasicObject"),$nesting),$send([$$("Numeric"),$$("Symbol"),$$("FalseClass"),$$("TrueClass"),$$("NilClass"),$$("Module")],"each",[],(function $$31(c){return null==c&&(c=nil),$send(c,"class_eval",[],(function $$32(){return $def(null==$$32.$$s?this:$$32.$$s,"$pretty_print_cycle",(function(q){return q.$text(this.$inspect())}),1)}),{$$arity:0,$$s:null==$$31.$$s?this:$$31.$$s})}),{$$arity:1,$$s:self}),$send([$$("Numeric"),$$("FalseClass"),$$("TrueClass"),$$("Module")],"each",[],(function $$33(c){return null==c&&(c=nil),$send(c,"class_eval",[],(function $$34(){return $def(null==$$34.$$s?this:$$34.$$s,"$pretty_print",(function(q){return q.$text(this.$inspect())}),1)}),{$$arity:0,$$s:null==$$33.$$s?this:$$33.$$s})}),{$$arity:1,$$s:self}),function($base,$parent_nesting){var self=$module($base,"Kernel"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return $def(self,"$pretty_inspect",(function(){return $$("PP").$pp(this,$$("StringIO").$new()).$string()}),0),$def(self,"$pp",(function($a){var $post_args,objs;return $post_args=Opal.slice.call(arguments),$send(objs=$post_args,"each",[],(function(obj){return null==obj&&(obj=nil),$$("PP").$pp(obj)}),1),$truthy($rb_le(objs.$size(),1))?objs.$first():objs}),-1),self.$module_function("pp")}($nesting[0],$nesting)};
diff --git a/opal/master/pp.min.js.gz b/opal/master/pp.min.js.gz
index 60031cc5..80846829 100644
Binary files a/opal/master/pp.min.js.gz and b/opal/master/pp.min.js.gz differ
diff --git a/opal/master/prettyprint.js b/opal/master/prettyprint.js
index 0e87d64b..02afca35 100644
--- a/opal/master/prettyprint.js
+++ b/opal/master/prettyprint.js
@@ -1,128 +1,82 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["prettyprint"] = function(Opal) {
-  function $rb_times(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs * rhs : lhs['$*'](rhs);
-  }
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $send = Opal.send, $truthy = Opal.truthy;
-
-  Opal.add_stubs(['$dup', '$lambda', '$*', '$new', '$to_proc', '$flush', '$attr_reader', '$last', '$<', '$+', '$deq', '$empty?', '$breakables', '$shift', '$output', '$-', '$width', '$!', '$===', '$first', '$length', '$<<', '$add', '$break_outmost_groups', '$group', '$breakable', '$break?', '$call', '$text', '$group_sub', '$nest', '$depth', '$push', '$enq', '$pop', '$delete', '$each', '$clear', '$indent', '$current_group', '$newline', '$genspace', '$group_queue', '$[]', '$downto', '$slice!', '$break', '$[]=']);
+Opal.modules["prettyprint"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $klass = Opal.klass, $send = Opal.send, $rb_times = Opal.rb_times, $defs = Opal.defs, $truthy = Opal.truthy, $def = Opal.def, $rb_lt = Opal.rb_lt, $rb_plus = Opal.rb_plus, $rb_minus = Opal.rb_minus, $eqeqeq = Opal.eqeqeq, $to_a = Opal.to_a;
+
+  Opal.add_stubs('dup,lambda,*,new,to_proc,flush,attr_reader,last,<,+,deq,empty?,breakables,shift,output,-,width,!,===,first,length,<<,add,break_outmost_groups,group,breakable,break?,call,text,group_sub,nest,depth,push,enq,pop,delete,each,clear,indent,current_group,newline,genspace,group_queue,[],downto,slice!,break,[]=');
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'PrettyPrint');
 
-    var $nesting = [self].concat($parent_nesting), $PrettyPrint_format$1, $PrettyPrint_singleline_format$3, $PrettyPrint_initialize$4, $PrettyPrint_current_group$6, $PrettyPrint_break_outmost_groups$7, $PrettyPrint_text$8, $PrettyPrint_fill_breakable$9, $PrettyPrint_breakable$11, $PrettyPrint_group$12, $PrettyPrint_group_sub$15, $PrettyPrint_nest$16, $PrettyPrint_flush$17;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-    self.$$prototype.group_stack = self.$$prototype.maxwidth = self.$$prototype.output_width = self.$$prototype.buffer_width = self.$$prototype.group_queue = self.$$prototype.buffer = self.$$prototype.output = self.$$prototype.newline = self.$$prototype.genspace = self.$$prototype.indent = nil;
+    $proto.group_stack = $proto.maxwidth = $proto.output_width = $proto.buffer_width = $proto.group_queue = $proto.buffer = $proto.output = $proto.newline = $proto.genspace = $proto.indent = nil;
     
-    Opal.defs($$($nesting, 'PrettyPrint'), '$format', $PrettyPrint_format$1 = function $$format(output, maxwidth, newline, genspace) {
-      var $$2, $iter = $PrettyPrint_format$1.$$p, $yield = $iter || nil, self = this, q = nil;
+    $defs($$('PrettyPrint'), '$format', function $$format(output, maxwidth, newline, genspace) {
+      var $yield = $$format.$$p || nil, self = this, q = nil;
 
-      if ($iter) $PrettyPrint_format$1.$$p = null;
+      delete $$format.$$p;
       
       
-      if (output == null) {
-        output = "".$dup();
-      };
+      if (output == null) output = "".$dup();;
       
-      if (maxwidth == null) {
-        maxwidth = 79;
-      };
+      if (maxwidth == null) maxwidth = 79;;
       
-      if (newline == null) {
-        newline = "\n";
-      };
+      if (newline == null) newline = "\n";;
       
-      if (genspace == null) {
-        genspace = $send(self, 'lambda', [], ($$2 = function(n){var self = $$2.$$s == null ? this : $$2.$$s;
-
+      if (genspace == null) genspace = $send(self, 'lambda', [], function $$1(n){
         
         
-        if (n == null) {
-          n = nil;
-        };
-        return $rb_times(" ", n);}, $$2.$$s = self, $$2.$$arity = 1, $$2));
-      };
-      q = $send($$($nesting, 'PrettyPrint'), 'new', [output, maxwidth, newline], genspace.$to_proc());
+        if (n == null) n = nil;;
+        return $rb_times(" ", n);}, 1);;
+      q = $send($$('PrettyPrint'), 'new', [output, maxwidth, newline], genspace.$to_proc());
       Opal.yield1($yield, q);
       q.$flush();
       return output;
-    }, $PrettyPrint_format$1.$$arity = -1);
-    Opal.defs($$($nesting, 'PrettyPrint'), '$singleline_format', $PrettyPrint_singleline_format$3 = function $$singleline_format(output, maxwidth, newline, genspace) {
-      var $iter = $PrettyPrint_singleline_format$3.$$p, $yield = $iter || nil, self = this, q = nil;
+    }, -1);
+    $defs($$('PrettyPrint'), '$singleline_format', function $$singleline_format(output, maxwidth, newline, genspace) {
+      var $yield = $$singleline_format.$$p || nil, q = nil;
 
-      if ($iter) $PrettyPrint_singleline_format$3.$$p = null;
+      delete $$singleline_format.$$p;
       
       
-      if (output == null) {
-        output = "".$dup();
-      };
+      if (output == null) output = "".$dup();;
       
-      if (maxwidth == null) {
-        maxwidth = nil;
-      };
+      if (maxwidth == null) maxwidth = nil;;
       
-      if (newline == null) {
-        newline = nil;
-      };
+      if (newline == null) newline = nil;;
       
-      if (genspace == null) {
-        genspace = nil;
-      };
-      q = $$($nesting, 'SingleLine').$new(output);
+      if (genspace == null) genspace = nil;;
+      q = $$('SingleLine').$new(output);
       Opal.yield1($yield, q);
       return output;
-    }, $PrettyPrint_singleline_format$3.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$initialize', $PrettyPrint_initialize$4 = function $$initialize(output, maxwidth, newline) {
-      var $iter = $PrettyPrint_initialize$4.$$p, genspace = $iter || nil, $$5, self = this, $ret_or_1 = nil, root_group = nil;
+    $def(self, '$initialize', function $$initialize(output, maxwidth, newline) {
+      var genspace = $$initialize.$$p || nil, self = this, $ret_or_1 = nil, root_group = nil;
 
-      if ($iter) $PrettyPrint_initialize$4.$$p = null;
-      
+      delete $$initialize.$$p;
       
-      if ($iter) $PrettyPrint_initialize$4.$$p = null;;
+      ;
       
-      if (output == null) {
-        output = "".$dup();
-      };
+      if (output == null) output = "".$dup();;
       
-      if (maxwidth == null) {
-        maxwidth = 79;
-      };
+      if (maxwidth == null) maxwidth = 79;;
       
-      if (newline == null) {
-        newline = "\n";
-      };
+      if (newline == null) newline = "\n";;
       self.output = output;
       self.maxwidth = maxwidth;
       self.newline = newline;
-      self.genspace = (function() {if ($truthy(($ret_or_1 = genspace))) {
-        return $ret_or_1
-      } else {
-        return $send(self, 'lambda', [], ($$5 = function(n){var self = $$5.$$s == null ? this : $$5.$$s;
-
-          
-          
-          if (n == null) {
-            n = nil;
-          };
-          return $rb_times(" ", n);}, $$5.$$s = self, $$5.$$arity = 1, $$5))
-      }; return nil; })();
+      self.genspace = ($truthy(($ret_or_1 = genspace)) ? ($ret_or_1) : ($send(self, 'lambda', [], function $$2(n){
+        
+        
+        if (n == null) n = nil;;
+        return $rb_times(" ", n);}, 1)));
       self.output_width = 0;
       self.buffer_width = 0;
       self.buffer = [];
-      root_group = $$($nesting, 'Group').$new(0);
+      root_group = $$('Group').$new(0);
       self.group_stack = [root_group];
-      self.group_queue = $$($nesting, 'GroupQueue').$new(root_group);
+      self.group_queue = $$('GroupQueue').$new(root_group);
       return (self.indent = 0);
-    }, $PrettyPrint_initialize$4.$$arity = -1);
+    }, -1);
     self.$attr_reader("output");
     self.$attr_reader("maxwidth");
     self.$attr_reader("newline");
@@ -130,19 +84,18 @@ Opal.modules["prettyprint"] = function(Opal) {
     self.$attr_reader("indent");
     self.$attr_reader("group_queue");
     
-    Opal.def(self, '$current_group', $PrettyPrint_current_group$6 = function $$current_group() {
+    $def(self, '$current_group', function $$current_group() {
       var self = this;
 
       return self.group_stack.$last()
-    }, $PrettyPrint_current_group$6.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$break_outmost_groups', $PrettyPrint_break_outmost_groups$7 = function $$break_outmost_groups() {
-      var $a, $b, self = this, group = nil, data = nil, $ret_or_2 = nil, text = nil;
+    $def(self, '$break_outmost_groups', function $$break_outmost_groups() {
+      var $a, $b, self = this, group = nil, data = nil, $ret_or_1 = nil, text = nil;
 
       while ($truthy($rb_lt(self.maxwidth, $rb_plus(self.output_width, self.buffer_width)))) {
         
-        if ($truthy((group = self.group_queue.$deq()))) {
-        } else {
+        if (!$truthy((group = self.group_queue.$deq()))) {
           return nil
         };
         while (!($truthy(group.$breakables()['$empty?']()))) {
@@ -151,27 +104,21 @@ Opal.modules["prettyprint"] = function(Opal) {
           self.output_width = data.$output(self.output, self.output_width);
           self.buffer_width = $rb_minus(self.buffer_width, data.$width());
         };
-        while ($truthy((function() {if ($truthy(($ret_or_2 = self.buffer['$empty?']()['$!']()))) {
-          return $$($nesting, 'Text')['$==='](self.buffer.$first())
-        } else {
-          return $ret_or_2
-        }; return nil; })())) {
+        while ($truthy(($truthy(($ret_or_1 = self.buffer['$empty?']()['$!']())) ? ($$('Text')['$==='](self.buffer.$first())) : ($ret_or_1)))) {
           
           text = self.buffer.$shift();
           self.output_width = text.$output(self.output, self.output_width);
           self.buffer_width = $rb_minus(self.buffer_width, text.$width());
         };
       }
-    }, $PrettyPrint_break_outmost_groups$7.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$text', $PrettyPrint_text$8 = function $$text(obj, width) {
+    $def(self, '$text', function $$text(obj, width) {
       var self = this, text = nil;
 
       
       
-      if (width == null) {
-        width = obj.$length();
-      };
+      if (width == null) width = obj.$length();;
       if ($truthy(self.buffer['$empty?']())) {
         
         self.output['$<<'](obj);
@@ -179,47 +126,38 @@ Opal.modules["prettyprint"] = function(Opal) {
       } else {
         
         text = self.buffer.$last();
-        if ($truthy($$($nesting, 'Text')['$==='](text))) {
-        } else {
+        if (!$eqeqeq($$('Text'), text)) {
           
-          text = $$($nesting, 'Text').$new();
+          text = $$('Text').$new();
           self.buffer['$<<'](text);
         };
         text.$add(obj, width);
         self.buffer_width = $rb_plus(self.buffer_width, width);
         return self.$break_outmost_groups();
       };
-    }, $PrettyPrint_text$8.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$fill_breakable', $PrettyPrint_fill_breakable$9 = function $$fill_breakable(sep, width) {
-      var $$10, self = this;
+    $def(self, '$fill_breakable', function $$fill_breakable(sep, width) {
+      var self = this;
 
       
       
-      if (sep == null) {
-        sep = " ";
-      };
+      if (sep == null) sep = " ";;
       
-      if (width == null) {
-        width = sep.$length();
-      };
-      return $send(self, 'group', [], ($$10 = function(){var self = $$10.$$s == null ? this : $$10.$$s;
+      if (width == null) width = sep.$length();;
+      return $send(self, 'group', [], function $$3(){var self = $$3.$$s == null ? this : $$3.$$s;
 
-        return self.$breakable(sep, width)}, $$10.$$s = self, $$10.$$arity = 0, $$10));
-    }, $PrettyPrint_fill_breakable$9.$$arity = -1);
+        return self.$breakable(sep, width)}, {$$arity: 0, $$s: self});
+    }, -1);
     
-    Opal.def(self, '$breakable', $PrettyPrint_breakable$11 = function $$breakable(sep, width) {
+    $def(self, '$breakable', function $$breakable(sep, width) {
       var self = this, group = nil;
 
       
       
-      if (sep == null) {
-        sep = " ";
-      };
+      if (sep == null) sep = " ";;
       
-      if (width == null) {
-        width = sep.$length();
-      };
+      if (width == null) width = sep.$length();;
       group = self.group_stack.$last();
       if ($truthy(group['$break?']())) {
         
@@ -230,70 +168,55 @@ Opal.modules["prettyprint"] = function(Opal) {
         return (self.buffer_width = 0);
       } else {
         
-        self.buffer['$<<']($$($nesting, 'Breakable').$new(sep, width, self));
+        self.buffer['$<<']($$('Breakable').$new(sep, width, self));
         self.buffer_width = $rb_plus(self.buffer_width, width);
         return self.$break_outmost_groups();
       };
-    }, $PrettyPrint_breakable$11.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$group', $PrettyPrint_group$12 = function $$group(indent, open_obj, close_obj, open_width, close_width) {
-      var $$13, $iter = $PrettyPrint_group$12.$$p, $yield = $iter || nil, self = this;
+    $def(self, '$group', function $$group(indent, open_obj, close_obj, open_width, close_width) {
+      var $yield = $$group.$$p || nil, self = this;
 
-      if ($iter) $PrettyPrint_group$12.$$p = null;
+      delete $$group.$$p;
       
       
-      if (indent == null) {
-        indent = 0;
-      };
+      if (indent == null) indent = 0;;
       
-      if (open_obj == null) {
-        open_obj = "";
-      };
+      if (open_obj == null) open_obj = "";;
       
-      if (close_obj == null) {
-        close_obj = "";
-      };
+      if (close_obj == null) close_obj = "";;
       
-      if (open_width == null) {
-        open_width = open_obj.$length();
-      };
+      if (open_width == null) open_width = open_obj.$length();;
       
-      if (close_width == null) {
-        close_width = close_obj.$length();
-      };
+      if (close_width == null) close_width = close_obj.$length();;
       self.$text(open_obj, open_width);
-      $send(self, 'group_sub', [], ($$13 = function(){var self = $$13.$$s == null ? this : $$13.$$s, $$14;
+      $send(self, 'group_sub', [], function $$4(){var self = $$4.$$s == null ? this : $$4.$$s;
 
-        return $send(self, 'nest', [indent], ($$14 = function(){var self = $$14.$$s == null ? this : $$14.$$s;
-
-          return Opal.yieldX($yield, []);}, $$14.$$s = self, $$14.$$arity = 0, $$14))}, $$13.$$s = self, $$13.$$arity = 0, $$13));
+        return $send(self, 'nest', [indent], function $$5(){
+          return Opal.yieldX($yield, []);}, 0)}, {$$arity: 0, $$s: self});
       return self.$text(close_obj, close_width);
-    }, $PrettyPrint_group$12.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$group_sub', $PrettyPrint_group_sub$15 = function $$group_sub() {
-      var $iter = $PrettyPrint_group_sub$15.$$p, $yield = $iter || nil, self = this, group = nil;
+    $def(self, '$group_sub', function $$group_sub() {
+      var $yield = $$group_sub.$$p || nil, self = this, group = nil;
 
-      if ($iter) $PrettyPrint_group_sub$15.$$p = null;
+      delete $$group_sub.$$p;
       
-      group = $$($nesting, 'Group').$new($rb_plus(self.group_stack.$last().$depth(), 1));
+      group = $$('Group').$new($rb_plus(self.group_stack.$last().$depth(), 1));
       self.group_stack.$push(group);
       self.group_queue.$enq(group);
       
       return (function() { try {
       return Opal.yieldX($yield, []);
       } finally {
-        (self.group_stack.$pop(), (function() {if ($truthy(group.$breakables()['$empty?']())) {
-          return self.group_queue.$delete(group)
-        } else {
-          return nil
-        }; return nil; })())
+        (self.group_stack.$pop(), ($truthy(group.$breakables()['$empty?']()) ? (self.group_queue.$delete(group)) : nil))
       }; })();;
-    }, $PrettyPrint_group_sub$15.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$nest', $PrettyPrint_nest$16 = function $$nest(indent) {
-      var $iter = $PrettyPrint_nest$16.$$p, $yield = $iter || nil, self = this;
+    $def(self, '$nest', function $$nest(indent) {
+      var $yield = $$nest.$$p || nil, self = this;
 
-      if ($iter) $PrettyPrint_nest$16.$$p = null;
+      delete $$nest.$$p;
       
       self.indent = $rb_plus(self.indent, indent);
       
@@ -302,73 +225,68 @@ Opal.modules["prettyprint"] = function(Opal) {
       } finally {
         (self.indent = $rb_minus(self.indent, indent))
       }; })();;
-    }, $PrettyPrint_nest$16.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$flush', $PrettyPrint_flush$17 = function $$flush() {
-      var $$18, self = this;
+    $def(self, '$flush', function $$flush() {
+      var self = this;
 
       
-      $send(self.buffer, 'each', [], ($$18 = function(data){var self = $$18.$$s == null ? this : $$18.$$s;
+      $send(self.buffer, 'each', [], function $$6(data){var self = $$6.$$s == null ? this : $$6.$$s;
         if (self.output == null) self.output = nil;
         if (self.output_width == null) self.output_width = nil;
 
         
         
-        if (data == null) {
-          data = nil;
-        };
-        return (self.output_width = data.$output(self.output, self.output_width));}, $$18.$$s = self, $$18.$$arity = 1, $$18));
+        if (data == null) data = nil;;
+        return (self.output_width = data.$output(self.output, self.output_width));}, {$$arity: 1, $$s: self});
       self.buffer.$clear();
       return (self.buffer_width = 0);
-    }, $PrettyPrint_flush$17.$$arity = 0);
-    (function($base, $super, $parent_nesting) {
+    }, 0);
+    (function($base, $super) {
       var self = $klass($base, $super, 'Text');
 
-      var $nesting = [self].concat($parent_nesting), $Text_initialize$19, $Text_output$20, $Text_add$22;
+      var $proto = self.$$prototype;
 
-      self.$$prototype.objs = self.$$prototype.width = nil;
+      $proto.objs = $proto.width = nil;
       
       
-      Opal.def(self, '$initialize', $Text_initialize$19 = function $$initialize() {
+      $def(self, '$initialize', function $$initialize() {
         var self = this;
 
         
         self.objs = [];
         return (self.width = 0);
-      }, $Text_initialize$19.$$arity = 0);
+      }, 0);
       self.$attr_reader("width");
       
-      Opal.def(self, '$output', $Text_output$20 = function $$output(out, output_width) {
-        var $$21, self = this;
+      $def(self, '$output', function $$output(out, output_width) {
+        var self = this;
 
         
-        $send(self.objs, 'each', [], ($$21 = function(obj){var self = $$21.$$s == null ? this : $$21.$$s;
-
+        $send(self.objs, 'each', [], function $$7(obj){
           
           
-          if (obj == null) {
-            obj = nil;
-          };
-          return out['$<<'](obj);}, $$21.$$s = self, $$21.$$arity = 1, $$21));
+          if (obj == null) obj = nil;;
+          return out['$<<'](obj);}, 1);
         return $rb_plus(output_width, self.width);
-      }, $Text_output$20.$$arity = 2);
-      return (Opal.def(self, '$add', $Text_add$22 = function $$add(obj, width) {
+      }, 2);
+      return $def(self, '$add', function $$add(obj, width) {
         var self = this;
 
         
         self.objs['$<<'](obj);
         return (self.width = $rb_plus(self.width, width));
-      }, $Text_add$22.$$arity = 2), nil) && 'add';
-    })($nesting[0], null, $nesting);
-    (function($base, $super, $parent_nesting) {
+      }, 2);
+    })($nesting[0], null);
+    (function($base, $super) {
       var self = $klass($base, $super, 'Breakable');
 
-      var $nesting = [self].concat($parent_nesting), $Breakable_initialize$23, $Breakable_output$24;
+      var $proto = self.$$prototype;
 
-      self.$$prototype.group = self.$$prototype.pp = self.$$prototype.indent = self.$$prototype.obj = self.$$prototype.width = nil;
+      $proto.group = $proto.pp = $proto.indent = $proto.obj = $proto.width = nil;
       
       
-      Opal.def(self, '$initialize', $Breakable_initialize$23 = function $$initialize(sep, width, q) {
+      $def(self, '$initialize', function $$initialize(sep, width, q) {
         var self = this;
 
         
@@ -378,11 +296,11 @@ Opal.modules["prettyprint"] = function(Opal) {
         self.indent = q.$indent();
         self.group = q.$current_group();
         return self.group.$breakables().$push(self);
-      }, $Breakable_initialize$23.$$arity = 3);
+      }, 3);
       self.$attr_reader("obj");
       self.$attr_reader("width");
       self.$attr_reader("indent");
-      return (Opal.def(self, '$output', $Breakable_output$24 = function $$output(out, output_width) {
+      return $def(self, '$output', function $$output(out, output_width) {
         var self = this;
 
         
@@ -395,43 +313,44 @@ Opal.modules["prettyprint"] = function(Opal) {
         } else {
           
           if ($truthy(self.group.$breakables()['$empty?']())) {
-            self.pp.$group_queue().$delete(self.group)};
+            self.pp.$group_queue().$delete(self.group)
+          };
           out['$<<'](self.obj);
           return $rb_plus(output_width, self.width);
         };
-      }, $Breakable_output$24.$$arity = 2), nil) && 'output';
-    })($nesting[0], null, $nesting);
-    (function($base, $super, $parent_nesting) {
+      }, 2);
+    })($nesting[0], null);
+    (function($base, $super) {
       var self = $klass($base, $super, 'Group');
 
-      var $nesting = [self].concat($parent_nesting), $Group_initialize$25, $Group_break$26, $Group_break$ques$27, $Group_first$ques$28;
+      var $proto = self.$$prototype;
 
-      self.$$prototype["break"] = nil;
+      $proto["break"] = nil;
       
       
-      Opal.def(self, '$initialize', $Group_initialize$25 = function $$initialize(depth) {
+      $def(self, '$initialize', function $$initialize(depth) {
         var self = this;
 
         
         self.depth = depth;
         self.breakables = [];
         return (self["break"] = false);
-      }, $Group_initialize$25.$$arity = 1);
+      }, 1);
       self.$attr_reader("depth");
       self.$attr_reader("breakables");
       
-      Opal.def(self, '$break', $Group_break$26 = function() {
+      $def(self, '$break', function $Group_break$8() {
         var self = this;
 
         return (self["break"] = true)
-      }, $Group_break$26.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$break?', $Group_break$ques$27 = function() {
+      $def(self, '$break?', function $Group_break$ques$9() {
         var self = this;
 
         return self["break"]
-      }, $Group_break$ques$27.$$arity = 0);
-      return (Opal.def(self, '$first?', $Group_first$ques$28 = function() {
+      }, 0);
+      return $def(self, '$first?', function $Group_first$ques$10() {
         var $a, self = this;
 
         if ($truthy((($a = self['first'], $a != null && $a !== nil) ? 'instance-variable' : nil))) {
@@ -441,36 +360,34 @@ Opal.modules["prettyprint"] = function(Opal) {
           self.first = false;
           return true;
         }
-      }, $Group_first$ques$28.$$arity = 0), nil) && 'first?';
-    })($nesting[0], null, $nesting);
-    (function($base, $super, $parent_nesting) {
+      }, 0);
+    })($nesting[0], null);
+    (function($base, $super) {
       var self = $klass($base, $super, 'GroupQueue');
 
-      var $nesting = [self].concat($parent_nesting), $GroupQueue_initialize$29, $GroupQueue_enq$31, $GroupQueue_deq$32, $GroupQueue_delete$36;
+      var $proto = self.$$prototype;
 
-      self.$$prototype.queue = nil;
+      $proto.queue = nil;
       
       
-      Opal.def(self, '$initialize', $GroupQueue_initialize$29 = function $$initialize($a) {
-        var $post_args, groups, $$30, self = this;
+      $def(self, '$initialize', function $$initialize($a) {
+        var $post_args, groups, self = this;
 
         
         
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
+        $post_args = Opal.slice.call(arguments);
         
         groups = $post_args;;
         self.queue = [];
-        return $send(groups, 'each', [], ($$30 = function(g){var self = $$30.$$s == null ? this : $$30.$$s;
+        return $send(groups, 'each', [], function $$11(g){var self = $$11.$$s == null ? this : $$11.$$s;
 
           
           
-          if (g == null) {
-            g = nil;
-          };
-          return self.$enq(g);}, $$30.$$s = self, $$30.$$arity = 1, $$30));
-      }, $GroupQueue_initialize$29.$$arity = -1);
+          if (g == null) g = nil;;
+          return self.$enq(g);}, {$$arity: 1, $$s: self});
+      }, -1);
       
-      Opal.def(self, '$enq', $GroupQueue_enq$31 = function $$enq(group) {
+      $def(self, '$enq', function $$enq(group) {
         var $a, self = this, depth = nil;
 
         
@@ -479,27 +396,22 @@ Opal.modules["prettyprint"] = function(Opal) {
           self.queue['$<<']([])
         };
         return self.queue['$[]'](depth)['$<<'](group);
-      }, $GroupQueue_enq$31.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$deq', $GroupQueue_deq$32 = function $$deq() {try {
+      $def(self, '$deq', function $$deq() {try {
 
-        var $$33, self = this;
+        var self = this;
 
         
-        $send(self.queue, 'each', [], ($$33 = function(gs){var self = $$33.$$s == null ? this : $$33.$$s, $$34, $$35;
-
+        $send(self.queue, 'each', [], function $$12(gs){
           
           
-          if (gs == null) {
-            gs = nil;
-          };
-          $send($rb_minus(gs.$length(), 1), 'downto', [0], ($$34 = function(i){var self = $$34.$$s == null ? this : $$34.$$s, group = nil;
+          if (gs == null) gs = nil;;
+          $send($rb_minus(gs.$length(), 1), 'downto', [0], function $$13(i){var group = nil;
 
             
             
-            if (i == null) {
-              i = nil;
-            };
+            if (i == null) i = nil;;
             if ($truthy(gs['$[]'](i).$breakables()['$empty?']())) {
               return nil
             } else {
@@ -507,130 +419,106 @@ Opal.modules["prettyprint"] = function(Opal) {
               group = gs['$slice!'](i, 1).$first();
               group.$break();
               Opal.ret(group);
-            };}, $$34.$$s = self, $$34.$$arity = 1, $$34));
-          $send(gs, 'each', [], ($$35 = function(group){var self = $$35.$$s == null ? this : $$35.$$s;
-
+            };}, 1);
+          $send(gs, 'each', [], function $$14(group){
             
             
-            if (group == null) {
-              group = nil;
-            };
-            return group.$break();}, $$35.$$s = self, $$35.$$arity = 1, $$35));
-          return gs.$clear();}, $$33.$$s = self, $$33.$$arity = 1, $$33));
+            if (group == null) group = nil;;
+            return group.$break();}, 1);
+          return gs.$clear();}, 1);
         return nil;
         } catch ($returner) { if ($returner === Opal.returner) { return $returner.$v } throw $returner; }
-      }, $GroupQueue_deq$32.$$arity = 0);
-      return (Opal.def(self, '$delete', $GroupQueue_delete$36 = function(group) {
+      }, 0);
+      return $def(self, '$delete', function $GroupQueue_delete$15(group) {
         var self = this;
 
         return self.queue['$[]'](group.$depth()).$delete(group)
-      }, $GroupQueue_delete$36.$$arity = 1), nil) && 'delete';
-    })($nesting[0], null, $nesting);
-    return (function($base, $super, $parent_nesting) {
+      }, 1);
+    })($nesting[0], null);
+    return (function($base, $super) {
       var self = $klass($base, $super, 'SingleLine');
 
-      var $nesting = [self].concat($parent_nesting), $SingleLine_initialize$37, $SingleLine_text$38, $SingleLine_breakable$39, $SingleLine_nest$40, $SingleLine_group$41, $SingleLine_flush$42, $SingleLine_first$ques$43;
+      var $proto = self.$$prototype;
 
-      self.$$prototype.output = self.$$prototype.first = nil;
+      $proto.output = $proto.first = nil;
       
       
-      Opal.def(self, '$initialize', $SingleLine_initialize$37 = function $$initialize(output, maxwidth, newline) {
+      $def(self, '$initialize', function $$initialize(output, maxwidth, newline) {
         var self = this;
 
         
         
-        if (maxwidth == null) {
-          maxwidth = nil;
-        };
+        if (maxwidth == null) maxwidth = nil;;
         
-        if (newline == null) {
-          newline = nil;
-        };
+        if (newline == null) newline = nil;;
         self.output = output;
         return (self.first = [true]);
-      }, $SingleLine_initialize$37.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$text', $SingleLine_text$38 = function $$text(obj, width) {
+      $def(self, '$text', function $$text(obj, width) {
         var self = this;
 
         
         
-        if (width == null) {
-          width = nil;
-        };
+        if (width == null) width = nil;;
         return self.output['$<<'](obj);
-      }, $SingleLine_text$38.$$arity = -2);
+      }, -2);
       
-      Opal.def(self, '$breakable', $SingleLine_breakable$39 = function $$breakable(sep, width) {
+      $def(self, '$breakable', function $$breakable(sep, width) {
         var self = this;
 
         
         
-        if (sep == null) {
-          sep = " ";
-        };
+        if (sep == null) sep = " ";;
         
-        if (width == null) {
-          width = nil;
-        };
+        if (width == null) width = nil;;
         return self.output['$<<'](sep);
-      }, $SingleLine_breakable$39.$$arity = -1);
+      }, -1);
       
-      Opal.def(self, '$nest', $SingleLine_nest$40 = function $$nest(indent) {
-        var $iter = $SingleLine_nest$40.$$p, $yield = $iter || nil, self = this;
+      $def(self, '$nest', function $$nest(indent) {
+        var $yield = $$nest.$$p || nil;
 
-        if ($iter) $SingleLine_nest$40.$$p = null;
+        delete $$nest.$$p;
         return Opal.yieldX($yield, []);
-      }, $SingleLine_nest$40.$$arity = 1);
+      }, 1);
       
-      Opal.def(self, '$group', $SingleLine_group$41 = function $$group(indent, open_obj, close_obj, open_width, close_width) {
-        var $iter = $SingleLine_group$41.$$p, $yield = $iter || nil, self = this;
+      $def(self, '$group', function $$group(indent, open_obj, close_obj, open_width, close_width) {
+        var $yield = $$group.$$p || nil, self = this;
 
-        if ($iter) $SingleLine_group$41.$$p = null;
+        delete $$group.$$p;
         
         
-        if (indent == null) {
-          indent = nil;
-        };
+        if (indent == null) indent = nil;;
         
-        if (open_obj == null) {
-          open_obj = "";
-        };
+        if (open_obj == null) open_obj = "";;
         
-        if (close_obj == null) {
-          close_obj = "";
-        };
+        if (close_obj == null) close_obj = "";;
         
-        if (open_width == null) {
-          open_width = nil;
-        };
+        if (open_width == null) open_width = nil;;
         
-        if (close_width == null) {
-          close_width = nil;
-        };
+        if (close_width == null) close_width = nil;;
         self.first.$push(true);
         self.output['$<<'](open_obj);
         Opal.yieldX($yield, []);
         self.output['$<<'](close_obj);
         return self.first.$pop();
-      }, $SingleLine_group$41.$$arity = -1);
+      }, -1);
       
-      Opal.def(self, '$flush', $SingleLine_flush$42 = function $$flush() {
-        var self = this;
-
+      $def(self, '$flush', function $$flush() {
+        
         return nil
-      }, $SingleLine_flush$42.$$arity = 0);
-      return (Opal.def(self, '$first?', $SingleLine_first$ques$43 = function() {
+      }, 0);
+      return $def(self, '$first?', function $SingleLine_first$ques$16() {
         var self = this, result = nil, $writer = nil;
 
         
         result = self.first['$[]'](-1);
         
         $writer = [-1, false];
-        $send(self.first, '[]=', Opal.to_a($writer));
+        $send(self.first, '[]=', $to_a($writer));
         $writer[$rb_minus($writer["length"], 1)];;
         return result;
-      }, $SingleLine_first$ques$43.$$arity = 0), nil) && 'first?';
-    })($nesting[0], null, $nesting);
+      }, 0);
+    })($nesting[0], null);
   })($nesting[0], null, $nesting)
 };
diff --git a/opal/master/prettyprint.min.js b/opal/master/prettyprint.min.js
index 669f075e..ae582492 100644
--- a/opal/master/prettyprint.min.js
+++ b/opal/master/prettyprint.min.js
@@ -1 +1 @@
-Opal.modules.prettyprint=function(Opal){function $rb_times(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs*rhs:lhs["$*"](rhs)}function $rb_lt(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs<rhs:lhs["$<"](rhs)}function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$klass=Opal.klass,$send=Opal.send,$truthy=Opal.truthy;return Opal.add_stubs(["$dup","$lambda","$*","$new","$to_proc","$flush","$attr_reader","$last","$<","$+","$deq","$empty?","$breakables","$shift","$output","$-","$width","$!","$===","$first","$length","$<<","$add","$break_outmost_groups","$group","$breakable","$break?","$call","$text","$group_sub","$nest","$depth","$push","$enq","$pop","$delete","$each","$clear","$indent","$current_group","$newline","$genspace","$group_queue","$[]","$downto","$slice!","$break","$[]="]),function($GroupQueue_deq$32,$GroupQueue_delete$36){var $PrettyPrint_format$1,$PrettyPrint_singleline_format$3,$PrettyPrint_initialize$4,$PrettyPrint_group$12,$PrettyPrint_group_sub$15,$PrettyPrint_nest$16,$GroupQueue_deq$32=$klass($GroupQueue_deq$32,null,"PrettyPrint"),$nesting=[$GroupQueue_deq$32].concat($GroupQueue_delete$36);return $GroupQueue_deq$32.$$prototype.group_stack=$GroupQueue_deq$32.$$prototype.maxwidth=$GroupQueue_deq$32.$$prototype.output_width=$GroupQueue_deq$32.$$prototype.buffer_width=$GroupQueue_deq$32.$$prototype.group_queue=$GroupQueue_deq$32.$$prototype.buffer=$GroupQueue_deq$32.$$prototype.output=$GroupQueue_deq$32.$$prototype.newline=$GroupQueue_deq$32.$$prototype.genspace=$GroupQueue_deq$32.$$prototype.indent=nil,Opal.defs($$($nesting,"PrettyPrint"),"$format",$PrettyPrint_format$1=function(output,maxwidth,newline,genspace){var $$2,$iter=$PrettyPrint_format$1.$$p,$yield=$iter||nil,q=nil;return $iter&&($PrettyPrint_format$1.$$p=null),null==output&&(output="".$dup()),null==maxwidth&&(maxwidth=79),null==newline&&(newline="\n"),null==genspace&&(genspace=$send(this,"lambda",[],(($$2=function(n){null==$$2.$$s||$$2.$$s;return null==n&&(n=nil),$rb_times(" ",n)}).$$s=this,$$2.$$arity=1,$$2))),q=$send($$($nesting,"PrettyPrint"),"new",[output,maxwidth,newline],genspace.$to_proc()),Opal.yield1($yield,q),q.$flush(),output},$PrettyPrint_format$1.$$arity=-1),Opal.defs($$($nesting,"PrettyPrint"),"$singleline_format",$PrettyPrint_singleline_format$3=function(output,maxwidth,newline,genspace){var q,$iter=$PrettyPrint_singleline_format$3.$$p,$yield=$iter||nil;return $iter&&($PrettyPrint_singleline_format$3.$$p=null),null==output&&(output="".$dup()),null==maxwidth&&(maxwidth=nil),null==newline&&(newline=nil),null==genspace&&(genspace=nil),q=$$($nesting,"SingleLine").$new(output),Opal.yield1($yield,q),output},$PrettyPrint_singleline_format$3.$$arity=-1),Opal.def($GroupQueue_deq$32,"$initialize",$PrettyPrint_initialize$4=function(output,maxwidth,newline){var $$5,$ret_or_1,root_group,$iter=$PrettyPrint_initialize$4.$$p,genspace=$iter||nil,self=this;return $iter&&($PrettyPrint_initialize$4.$$p=null),$iter&&($PrettyPrint_initialize$4.$$p=null),null==output&&(output="".$dup()),null==maxwidth&&(maxwidth=79),null==newline&&(newline="\n"),self.output=output,self.maxwidth=maxwidth,self.newline=newline,self.genspace=$truthy($ret_or_1=genspace)?$ret_or_1:$send(self,"lambda",[],(($$5=function(n){null==$$5.$$s||$$5.$$s;return null==n&&(n=nil),$rb_times(" ",n)}).$$s=self,$$5.$$arity=1,$$5)),self.output_width=0,self.buffer_width=0,self.buffer=[],root_group=$$($nesting,"Group").$new(0),self.group_stack=[root_group],self.group_queue=$$($nesting,"GroupQueue").$new(root_group),self.indent=0},$PrettyPrint_initialize$4.$$arity=-1),$GroupQueue_deq$32.$attr_reader("output"),$GroupQueue_deq$32.$attr_reader("maxwidth"),$GroupQueue_deq$32.$attr_reader("newline"),$GroupQueue_deq$32.$attr_reader("genspace"),$GroupQueue_deq$32.$attr_reader("indent"),$GroupQueue_deq$32.$attr_reader("group_queue"),Opal.def($GroupQueue_deq$32,"$current_group",$GroupQueue_delete$36=function(){return this.group_stack.$last()},$GroupQueue_delete$36.$$arity=0),Opal.def($GroupQueue_deq$32,"$break_outmost_groups",$GroupQueue_delete$36=function(){for(var self=this,group=nil,data=nil,$ret_or_2=nil,text=nil;$truthy($rb_lt(self.maxwidth,$rb_plus(self.output_width,self.buffer_width)));){if(!$truthy(group=self.group_queue.$deq()))return nil;for(;!$truthy(group.$breakables()["$empty?"]());)data=self.buffer.$shift(),self.output_width=data.$output(self.output,self.output_width),self.buffer_width=$rb_minus(self.buffer_width,data.$width());for(;$truthy($truthy($ret_or_2=self.buffer["$empty?"]()["$!"]())?$$($nesting,"Text")["$==="](self.buffer.$first()):$ret_or_2);)text=self.buffer.$shift(),self.output_width=text.$output(self.output,self.output_width),self.buffer_width=$rb_minus(self.buffer_width,text.$width())}},$GroupQueue_delete$36.$$arity=0),Opal.def($GroupQueue_deq$32,"$text",$GroupQueue_delete$36=function(obj,width){var text=nil;return null==width&&(width=obj.$length()),$truthy(this.buffer["$empty?"]())?(this.output["$<<"](obj),this.output_width=$rb_plus(this.output_width,width)):(text=this.buffer.$last(),$truthy($$($nesting,"Text")["$==="](text))||(text=$$($nesting,"Text").$new(),this.buffer["$<<"](text)),text.$add(obj,width),this.buffer_width=$rb_plus(this.buffer_width,width),this.$break_outmost_groups())},$GroupQueue_delete$36.$$arity=-2),Opal.def($GroupQueue_deq$32,"$fill_breakable",$GroupQueue_delete$36=function(sep,width){var $$10;return null==sep&&(sep=" "),null==width&&(width=sep.$length()),$send(this,"group",[],(($$10=function(){return(null==$$10.$$s?this:$$10.$$s).$breakable(sep,width)}).$$s=this,$$10.$$arity=0,$$10))},$GroupQueue_delete$36.$$arity=-1),Opal.def($GroupQueue_deq$32,"$breakable",$GroupQueue_delete$36=function(sep,width){var group=nil;return null==sep&&(sep=" "),null==width&&(width=sep.$length()),group=this.group_stack.$last(),$truthy(group["$break?"]())?(this.$flush(),this.output["$<<"](this.newline),this.output["$<<"](this.genspace.$call(this.indent)),this.output_width=this.indent,this.buffer_width=0):(this.buffer["$<<"]($$($nesting,"Breakable").$new(sep,width,this)),this.buffer_width=$rb_plus(this.buffer_width,width),this.$break_outmost_groups())},$GroupQueue_delete$36.$$arity=-1),Opal.def($GroupQueue_deq$32,"$group",$PrettyPrint_group$12=function(indent,open_obj,close_obj,open_width,close_width){var $$13,$iter=$PrettyPrint_group$12.$$p,$yield=$iter||nil;return $iter&&($PrettyPrint_group$12.$$p=null),null==indent&&(indent=0),null==open_obj&&(open_obj=""),null==close_obj&&(close_obj=""),null==open_width&&(open_width=open_obj.$length()),null==close_width&&(close_width=close_obj.$length()),this.$text(open_obj,open_width),$send(this,"group_sub",[],(($$13=function(){var $$14,self=null==$$13.$$s?this:$$13.$$s;return $send(self,"nest",[indent],(($$14=function(){null==$$14.$$s||$$14.$$s;return Opal.yieldX($yield,[])}).$$s=self,$$14.$$arity=0,$$14))}).$$s=this,$$13.$$arity=0,$$13)),this.$text(close_obj,close_width)},$PrettyPrint_group$12.$$arity=-1),Opal.def($GroupQueue_deq$32,"$group_sub",$PrettyPrint_group_sub$15=function(){var $iter=$PrettyPrint_group_sub$15.$$p,$yield=$iter||nil,self=this,group=nil;return $iter&&($PrettyPrint_group_sub$15.$$p=null),group=$$($nesting,"Group").$new($rb_plus(self.group_stack.$last().$depth(),1)),self.group_stack.$push(group),self.group_queue.$enq(group),function(){try{return Opal.yieldX($yield,[])}finally{self.group_stack.$pop(),$truthy(group.$breakables()["$empty?"]())&&self.group_queue.$delete(group)}}()},$PrettyPrint_group_sub$15.$$arity=0),Opal.def($GroupQueue_deq$32,"$nest",$PrettyPrint_nest$16=function(indent){var $iter=$PrettyPrint_nest$16.$$p,$yield=$iter||nil,self=this;return $iter&&($PrettyPrint_nest$16.$$p=null),self.indent=$rb_plus(self.indent,indent),function(){try{return Opal.yieldX($yield,[])}finally{self.indent=$rb_minus(self.indent,indent)}}()},$PrettyPrint_nest$16.$$arity=1),Opal.def($GroupQueue_deq$32,"$flush",$GroupQueue_delete$36=function(){var $$18;return $send(this.buffer,"each",[],(($$18=function(data){var self=null==$$18.$$s?this:$$18.$$s;return null==self.output&&(self.output=nil),null==self.output_width&&(self.output_width=nil),null==data&&(data=nil),self.output_width=data.$output(self.output,self.output_width)}).$$s=this,$$18.$$arity=1,$$18)),this.buffer.$clear(),this.buffer_width=0},$GroupQueue_delete$36.$$arity=0),$GroupQueue_deq$32=$nesting[0],$GroupQueue_delete$36=$nesting,[$GroupQueue_deq$32=$klass($GroupQueue_deq$32,null,"Text")].concat($GroupQueue_delete$36),$GroupQueue_deq$32.$$prototype.objs=$GroupQueue_deq$32.$$prototype.width=nil,Opal.def($GroupQueue_deq$32,"$initialize",$GroupQueue_delete$36=function(){return this.objs=[],this.width=0},$GroupQueue_delete$36.$$arity=0),$GroupQueue_deq$32.$attr_reader("width"),Opal.def($GroupQueue_deq$32,"$output",$GroupQueue_delete$36=function(out,output_width){var $$21;return $send(this.objs,"each",[],(($$21=function(obj){null==$$21.$$s||$$21.$$s;return null==obj&&(obj=nil),out["$<<"](obj)}).$$s=this,$$21.$$arity=1,$$21)),$rb_plus(output_width,this.width)},$GroupQueue_delete$36.$$arity=2),Opal.def($GroupQueue_deq$32,"$add",$GroupQueue_deq$32=function(obj,width){return this.objs["$<<"](obj),this.width=$rb_plus(this.width,width)},$GroupQueue_deq$32.$$arity=2),$GroupQueue_delete$36=$nesting[0],$GroupQueue_deq$32=$nesting,[$GroupQueue_delete$36=$klass($GroupQueue_delete$36,null,"Breakable")].concat($GroupQueue_deq$32),$GroupQueue_delete$36.$$prototype.group=$GroupQueue_delete$36.$$prototype.pp=$GroupQueue_delete$36.$$prototype.indent=$GroupQueue_delete$36.$$prototype.obj=$GroupQueue_delete$36.$$prototype.width=nil,Opal.def($GroupQueue_delete$36,"$initialize",$GroupQueue_deq$32=function(sep,width,q){return this.obj=sep,this.width=width,this.pp=q,this.indent=q.$indent(),this.group=q.$current_group(),this.group.$breakables().$push(this)},$GroupQueue_deq$32.$$arity=3),$GroupQueue_delete$36.$attr_reader("obj"),$GroupQueue_delete$36.$attr_reader("width"),$GroupQueue_delete$36.$attr_reader("indent"),Opal.def($GroupQueue_delete$36,"$output",$GroupQueue_delete$36=function(out,output_width){return this.group.$breakables().$shift(),$truthy(this.group["$break?"]())?(out["$<<"](this.pp.$newline()),out["$<<"](this.pp.$genspace().$call(this.indent)),this.indent):($truthy(this.group.$breakables()["$empty?"]())&&this.pp.$group_queue().$delete(this.group),out["$<<"](this.obj),$rb_plus(output_width,this.width))},$GroupQueue_delete$36.$$arity=2),$GroupQueue_deq$32=$nesting[0],$GroupQueue_delete$36=$nesting,[$GroupQueue_deq$32=$klass($GroupQueue_deq$32,null,"Group")].concat($GroupQueue_delete$36),$GroupQueue_deq$32.$$prototype.break=nil,Opal.def($GroupQueue_deq$32,"$initialize",$GroupQueue_delete$36=function(depth){return this.depth=depth,this.breakables=[],this.break=!1},$GroupQueue_delete$36.$$arity=1),$GroupQueue_deq$32.$attr_reader("depth"),$GroupQueue_deq$32.$attr_reader("breakables"),Opal.def($GroupQueue_deq$32,"$break",$GroupQueue_delete$36=function(){return this.break=!0},$GroupQueue_delete$36.$$arity=0),Opal.def($GroupQueue_deq$32,"$break?",$GroupQueue_delete$36=function(){return this.break},$GroupQueue_delete$36.$$arity=0),Opal.def($GroupQueue_deq$32,"$first?",$GroupQueue_deq$32=function(){var $a;return!$truthy(null!=($a=this.first)&&$a!==nil?"instance-variable":nil)&&!(this.first=!1)},$GroupQueue_deq$32.$$arity=0),$GroupQueue_delete$36=$nesting[0],$GroupQueue_deq$32=$nesting,[$GroupQueue_delete$36=$klass($GroupQueue_delete$36,null,"GroupQueue")].concat($GroupQueue_deq$32),$GroupQueue_delete$36.$$prototype.queue=nil,Opal.def($GroupQueue_delete$36,"$initialize",$GroupQueue_deq$32=function($a){var $$30,groups=Opal.slice.call(arguments,0,arguments.length);return this.queue=[],$send(groups,"each",[],(($$30=function(g){var self=null==$$30.$$s?this:$$30.$$s;return null==g&&(g=nil),self.$enq(g)}).$$s=this,$$30.$$arity=1,$$30))},$GroupQueue_deq$32.$$arity=-1),Opal.def($GroupQueue_delete$36,"$enq",$GroupQueue_deq$32=function(group){for(var depth=group.$depth();!$truthy($rb_lt(depth,this.queue.$length()));)this.queue["$<<"]([]);return this.queue["$[]"](depth)["$<<"](group)},$GroupQueue_deq$32.$$arity=1),Opal.def($GroupQueue_delete$36,"$deq",$GroupQueue_deq$32=function(){try{var $$33;return $send(this.queue,"each",[],(($$33=function(gs){var $$34,$$35,self=null==$$33.$$s?this:$$33.$$s;return null==gs&&(gs=nil),$send($rb_minus(gs.$length(),1),"downto",[0],(($$34=function(i){null==$$34.$$s||$$34.$$s;var group=nil;if(null==i&&(i=nil),$truthy(gs["$[]"](i).$breakables()["$empty?"]()))return nil;(group=gs["$slice!"](i,1).$first()).$break(),Opal.ret(group)}).$$s=self,$$34.$$arity=1,$$34)),$send(gs,"each",[],(($$35=function(group){null==$$35.$$s||$$35.$$s;return null==group&&(group=nil),group.$break()}).$$s=self,$$35.$$arity=1,$$35)),gs.$clear()}).$$s=this,$$33.$$arity=1,$$33)),nil}catch($returner){if($returner===Opal.returner)return $returner.$v;throw $returner}},$GroupQueue_deq$32.$$arity=0),Opal.def($GroupQueue_delete$36,"$delete",$GroupQueue_delete$36=function(group){return this.queue["$[]"](group.$depth()).$delete(group)},$GroupQueue_delete$36.$$arity=1),function($SingleLine_first$ques$43,$SingleLine_flush$42){var $SingleLine_nest$40,$SingleLine_group$41,$SingleLine_first$ques$43=$klass($SingleLine_first$ques$43,null,"SingleLine");[$SingleLine_first$ques$43].concat($SingleLine_flush$42);return $SingleLine_first$ques$43.$$prototype.output=$SingleLine_first$ques$43.$$prototype.first=nil,Opal.def($SingleLine_first$ques$43,"$initialize",$SingleLine_flush$42=function(output,maxwidth,newline){return null==maxwidth&&(maxwidth=nil),null==newline&&(newline=nil),this.output=output,this.first=[!0]},$SingleLine_flush$42.$$arity=-2),Opal.def($SingleLine_first$ques$43,"$text",$SingleLine_flush$42=function(obj,width){return null==width&&(width=nil),this.output["$<<"](obj)},$SingleLine_flush$42.$$arity=-2),Opal.def($SingleLine_first$ques$43,"$breakable",$SingleLine_flush$42=function(sep,width){return null==sep&&(sep=" "),null==width&&(width=nil),this.output["$<<"](sep)},$SingleLine_flush$42.$$arity=-1),Opal.def($SingleLine_first$ques$43,"$nest",$SingleLine_nest$40=function(){var $iter=$SingleLine_nest$40.$$p,$yield=$iter||nil;return $iter&&($SingleLine_nest$40.$$p=null),Opal.yieldX($yield,[])},$SingleLine_nest$40.$$arity=1),Opal.def($SingleLine_first$ques$43,"$group",$SingleLine_group$41=function(indent,open_obj,close_obj,open_width,close_width){var $iter=$SingleLine_group$41.$$p,$yield=$iter||nil;return $iter&&($SingleLine_group$41.$$p=null),null==indent&&(indent=nil),null==open_obj&&(open_obj=""),null==close_obj&&(close_obj=""),null==open_width&&(open_width=nil),null==close_width&&(close_width=nil),this.first.$push(!0),this.output["$<<"](open_obj),Opal.yieldX($yield,[]),this.output["$<<"](close_obj),this.first.$pop()},$SingleLine_group$41.$$arity=-1),Opal.def($SingleLine_first$ques$43,"$flush",$SingleLine_flush$42=function(){return nil},$SingleLine_flush$42.$$arity=0),Opal.def($SingleLine_first$ques$43,"$first?",$SingleLine_first$ques$43=function(){var result=this.first["$[]"](-1),$writer=[-1,!1];return $send(this.first,"[]=",Opal.to_a($writer)),$rb_minus($writer.length,1),result},$SingleLine_first$ques$43.$$arity=0),nil&&"first?"}($nesting[0],$nesting)}($nesting[0],$nesting)};
+Opal.modules.prettyprint=function(Opal){var $nesting=[],nil=Opal.nil,$klass=Opal.klass,$send=Opal.send,$rb_times=Opal.rb_times,$defs=Opal.defs,$truthy=Opal.truthy,$def=Opal.def,$rb_lt=Opal.rb_lt,$rb_plus=Opal.rb_plus,$rb_minus=Opal.rb_minus,$eqeqeq=Opal.eqeqeq,$to_a=Opal.to_a;return Opal.add_stubs("dup,lambda,*,new,to_proc,flush,attr_reader,last,<,+,deq,empty?,breakables,shift,output,-,width,!,===,first,length,<<,add,break_outmost_groups,group,breakable,break?,call,text,group_sub,nest,depth,push,enq,pop,delete,each,clear,indent,current_group,newline,genspace,group_queue,[],downto,slice!,break,[]="),function($base,$super,$parent_nesting){var self=$klass($base,null,"PrettyPrint"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;return $proto.group_stack=$proto.maxwidth=$proto.output_width=$proto.buffer_width=$proto.group_queue=$proto.buffer=$proto.output=$proto.newline=$proto.genspace=$proto.indent=nil,$defs($$("PrettyPrint"),"$format",(function $$format(output,maxwidth,newline,genspace){var $yield=$$format.$$p||nil,q=nil;return delete $$format.$$p,null==output&&(output="".$dup()),null==maxwidth&&(maxwidth=79),null==newline&&(newline="\n"),null==genspace&&(genspace=$send(this,"lambda",[],(function(n){return null==n&&(n=nil),$rb_times(" ",n)}),1)),q=$send($$("PrettyPrint"),"new",[output,maxwidth,newline],genspace.$to_proc()),Opal.yield1($yield,q),q.$flush(),output}),-1),$defs($$("PrettyPrint"),"$singleline_format",(function $$singleline_format(output,maxwidth,newline,genspace){var q,$yield=$$singleline_format.$$p||nil;return delete $$singleline_format.$$p,null==output&&(output="".$dup()),null==maxwidth&&(maxwidth=nil),null==newline&&(newline=nil),null==genspace&&(genspace=nil),q=$$("SingleLine").$new(output),Opal.yield1($yield,q),output}),-1),$def(self,"$initialize",(function $$initialize(output,maxwidth,newline){var $ret_or_1,root_group,genspace=$$initialize.$$p||nil;return delete $$initialize.$$p,null==output&&(output="".$dup()),null==maxwidth&&(maxwidth=79),null==newline&&(newline="\n"),this.output=output,this.maxwidth=maxwidth,this.newline=newline,this.genspace=$truthy($ret_or_1=genspace)?$ret_or_1:$send(this,"lambda",[],(function(n){return null==n&&(n=nil),$rb_times(" ",n)}),1),this.output_width=0,this.buffer_width=0,this.buffer=[],root_group=$$("Group").$new(0),this.group_stack=[root_group],this.group_queue=$$("GroupQueue").$new(root_group),this.indent=0}),-1),self.$attr_reader("output"),self.$attr_reader("maxwidth"),self.$attr_reader("newline"),self.$attr_reader("genspace"),self.$attr_reader("indent"),self.$attr_reader("group_queue"),$def(self,"$current_group",(function(){return this.group_stack.$last()}),0),$def(self,"$break_outmost_groups",(function(){for(var group=nil,data=nil,$ret_or_1=nil,text=nil;$truthy($rb_lt(this.maxwidth,$rb_plus(this.output_width,this.buffer_width)));){if(!$truthy(group=this.group_queue.$deq()))return nil;for(;!$truthy(group.$breakables()["$empty?"]());)data=this.buffer.$shift(),this.output_width=data.$output(this.output,this.output_width),this.buffer_width=$rb_minus(this.buffer_width,data.$width());for(;$truthy($truthy($ret_or_1=this.buffer["$empty?"]()["$!"]())?$$("Text")["$==="](this.buffer.$first()):$ret_or_1);)text=this.buffer.$shift(),this.output_width=text.$output(this.output,this.output_width),this.buffer_width=$rb_minus(this.buffer_width,text.$width())}}),0),$def(self,"$text",(function(obj,width){var text=nil;return null==width&&(width=obj.$length()),$truthy(this.buffer["$empty?"]())?(this.output["$<<"](obj),this.output_width=$rb_plus(this.output_width,width)):(text=this.buffer.$last(),$eqeqeq($$("Text"),text)||(text=$$("Text").$new(),this.buffer["$<<"](text)),text.$add(obj,width),this.buffer_width=$rb_plus(this.buffer_width,width),this.$break_outmost_groups())}),-2),$def(self,"$fill_breakable",(function(sep,width){return null==sep&&(sep=" "),null==width&&(width=sep.$length()),$send(this,"group",[],(function $$3(){return(null==$$3.$$s?this:$$3.$$s).$breakable(sep,width)}),{$$arity:0,$$s:this})}),-1),$def(self,"$breakable",(function(sep,width){var group=nil;return null==sep&&(sep=" "),null==width&&(width=sep.$length()),group=this.group_stack.$last(),$truthy(group["$break?"]())?(this.$flush(),this.output["$<<"](this.newline),this.output["$<<"](this.genspace.$call(this.indent)),this.output_width=this.indent,this.buffer_width=0):(this.buffer["$<<"]($$("Breakable").$new(sep,width,this)),this.buffer_width=$rb_plus(this.buffer_width,width),this.$break_outmost_groups())}),-1),$def(self,"$group",(function $$group(indent,open_obj,close_obj,open_width,close_width){var $yield=$$group.$$p||nil;return delete $$group.$$p,null==indent&&(indent=0),null==open_obj&&(open_obj=""),null==close_obj&&(close_obj=""),null==open_width&&(open_width=open_obj.$length()),null==close_width&&(close_width=close_obj.$length()),this.$text(open_obj,open_width),$send(this,"group_sub",[],(function $$4(){return $send(null==$$4.$$s?this:$$4.$$s,"nest",[indent],(function(){return Opal.yieldX($yield,[])}),0)}),{$$arity:0,$$s:this}),this.$text(close_obj,close_width)}),-1),$def(self,"$group_sub",(function $$group_sub(){var $yield=$$group_sub.$$p||nil,self=this,group=nil;return delete $$group_sub.$$p,group=$$("Group").$new($rb_plus(self.group_stack.$last().$depth(),1)),self.group_stack.$push(group),self.group_queue.$enq(group),function(){try{return Opal.yieldX($yield,[])}finally{self.group_stack.$pop(),$truthy(group.$breakables()["$empty?"]())&&self.group_queue.$delete(group)}}()}),0),$def(self,"$nest",(function $$nest(indent){var $yield=$$nest.$$p||nil,self=this;return delete $$nest.$$p,self.indent=$rb_plus(self.indent,indent),function(){try{return Opal.yieldX($yield,[])}finally{self.indent=$rb_minus(self.indent,indent)}}()}),1),$def(self,"$flush",(function(){return $send(this.buffer,"each",[],(function $$6(data){var self=null==$$6.$$s?this:$$6.$$s;return null==self.output&&(self.output=nil),null==self.output_width&&(self.output_width=nil),null==data&&(data=nil),self.output_width=data.$output(self.output,self.output_width)}),{$$arity:1,$$s:this}),this.buffer.$clear(),this.buffer_width=0}),0),function($base,$super){var self=$klass($base,null,"Text"),$proto=self.$$prototype;$proto.objs=$proto.width=nil,$def(self,"$initialize",(function(){return this.objs=[],this.width=0}),0),self.$attr_reader("width"),$def(self,"$output",(function(out,output_width){return $send(this.objs,"each",[],(function(obj){return null==obj&&(obj=nil),out["$<<"](obj)}),1),$rb_plus(output_width,this.width)}),2),$def(self,"$add",(function(obj,width){return this.objs["$<<"](obj),this.width=$rb_plus(this.width,width)}),2)}($nesting[0]),function($base,$super){var self=$klass($base,null,"Breakable"),$proto=self.$$prototype;$proto.group=$proto.pp=$proto.indent=$proto.obj=$proto.width=nil,$def(self,"$initialize",(function(sep,width,q){return this.obj=sep,this.width=width,this.pp=q,this.indent=q.$indent(),this.group=q.$current_group(),this.group.$breakables().$push(this)}),3),self.$attr_reader("obj"),self.$attr_reader("width"),self.$attr_reader("indent"),$def(self,"$output",(function(out,output_width){return this.group.$breakables().$shift(),$truthy(this.group["$break?"]())?(out["$<<"](this.pp.$newline()),out["$<<"](this.pp.$genspace().$call(this.indent)),this.indent):($truthy(this.group.$breakables()["$empty?"]())&&this.pp.$group_queue().$delete(this.group),out["$<<"](this.obj),$rb_plus(output_width,this.width))}),2)}($nesting[0]),function($base,$super){var self=$klass($base,null,"Group");self.$$prototype.break=nil,$def(self,"$initialize",(function(depth){return this.depth=depth,this.breakables=[],this.break=!1}),1),self.$attr_reader("depth"),self.$attr_reader("breakables"),$def(self,"$break",(function(){return this.break=!0}),0),$def(self,"$break?",(function(){return this.break}),0),$def(self,"$first?",(function(){var $a;return!$truthy(($a=this.first,null!=$a&&$a!==nil?"instance-variable":nil))&&(this.first=!1,!0)}),0)}($nesting[0]),function($base,$super){var self=$klass($base,null,"GroupQueue");self.$$prototype.queue=nil,$def(self,"$initialize",(function($a){var groups,self=this;return groups=Opal.slice.call(arguments),self.queue=[],$send(groups,"each",[],(function $$11(g){return null==g&&(g=nil),(null==$$11.$$s?this:$$11.$$s).$enq(g)}),{$$arity:1,$$s:self})}),-1),$def(self,"$enq",(function(group){var depth;for(depth=group.$depth();!$truthy($rb_lt(depth,this.queue.$length()));)this.queue["$<<"]([]);return this.queue["$[]"](depth)["$<<"](group)}),1),$def(self,"$deq",(function(){try{return $send(this.queue,"each",[],(function(gs){return null==gs&&(gs=nil),$send($rb_minus(gs.$length(),1),"downto",[0],(function(i){var group=nil;if(null==i&&(i=nil),$truthy(gs["$[]"](i).$breakables()["$empty?"]()))return nil;(group=gs["$slice!"](i,1).$first()).$break(),Opal.ret(group)}),1),$send(gs,"each",[],(function(group){return null==group&&(group=nil),group.$break()}),1),gs.$clear()}),1),nil}catch($returner){if($returner===Opal.returner)return $returner.$v;throw $returner}}),0),$def(self,"$delete",(function(group){return this.queue["$[]"](group.$depth()).$delete(group)}),1)}($nesting[0]),function($base,$super){var self=$klass($base,null,"SingleLine"),$proto=self.$$prototype;return $proto.output=$proto.first=nil,$def(self,"$initialize",(function(output,maxwidth,newline){return null==maxwidth&&(maxwidth=nil),null==newline&&(newline=nil),this.output=output,this.first=[!0]}),-2),$def(self,"$text",(function(obj,width){return null==width&&(width=nil),this.output["$<<"](obj)}),-2),$def(self,"$breakable",(function(sep,width){return null==sep&&(sep=" "),null==width&&(width=nil),this.output["$<<"](sep)}),-1),$def(self,"$nest",(function $$nest(indent){var $yield=$$nest.$$p||nil;return delete $$nest.$$p,Opal.yieldX($yield,[])}),1),$def(self,"$group",(function $$group(indent,open_obj,close_obj,open_width,close_width){var $yield=$$group.$$p||nil;return delete $$group.$$p,null==indent&&(indent=nil),null==open_obj&&(open_obj=""),null==close_obj&&(close_obj=""),null==open_width&&(open_width=nil),null==close_width&&(close_width=nil),this.first.$push(!0),this.output["$<<"](open_obj),Opal.yieldX($yield,[]),this.output["$<<"](close_obj),this.first.$pop()}),-1),$def(self,"$flush",(function(){return nil}),0),$def(self,"$first?",(function(){var result,$writer;return result=this.first["$[]"](-1),$writer=[-1,!1],$send(this.first,"[]=",$to_a($writer)),$rb_minus($writer.length,1),result}),0)}($nesting[0])}($nesting[0],0,$nesting)};
diff --git a/opal/master/prettyprint.min.js.gz b/opal/master/prettyprint.min.js.gz
index 56c934f0..9eaa10e6 100644
Binary files a/opal/master/prettyprint.min.js.gz and b/opal/master/prettyprint.min.js.gz differ
diff --git a/opal/master/promise.js b/opal/master/promise.js
index 55882e9b..71fc569f 100644
--- a/opal/master/promise.js
+++ b/opal/master/promise.js
@@ -1,54 +1,43 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["promise"] = function(Opal) {
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_le(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs <= rhs : lhs['$<='](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $hash2 = Opal.hash2, $truthy = Opal.truthy, $send = Opal.send, $alias = Opal.alias, $send2 = Opal.send2, $find_super = Opal.find_super;
-
-  Opal.add_stubs(['$resolve', '$new', '$reject', '$attr_reader', '$===', '$value', '$key?', '$keys', '$!=', '$==', '$<<', '$>>', '$exception?', '$[]', '$resolved?', '$rejected?', '$!', '$error', '$include?', '$action', '$realized?', '$raise', '$^', '$call', '$resolve!', '$exception!', '$any?', '$each', '$reject!', '$there_can_be_only_one!', '$then', '$to_proc', '$fail', '$always', '$trace', '$class', '$object_id', '$+', '$inspect', '$act?', '$nil?', '$prev', '$push', '$concat', '$it', '$proc', '$reverse', '$pop', '$<=', '$length', '$shift', '$-', '$wait', '$map', '$reduce', '$try', '$tap', '$all?', '$find']);
-  return (function($base, $super, $parent_nesting) {
+Opal.modules["promise"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $klass = Opal.klass, $defs = Opal.defs, $hash2 = Opal.hash2, $def = Opal.def, $eqeqeq = Opal.eqeqeq, $truthy = Opal.truthy, $not = Opal.not, $send = Opal.send, $to_a = Opal.to_a, $rb_plus = Opal.rb_plus, $alias = Opal.alias, $send2 = Opal.send2, $find_super = Opal.find_super, $rb_le = Opal.rb_le, $rb_minus = Opal.rb_minus, $const_set = Opal.const_set;
+
+  Opal.add_stubs('resolve,new,reject,attr_reader,===,value,key?,keys,!=,==,<<,>>,exception?,[],resolved?,rejected?,!,error,include?,action,realized?,raise,^,call,resolve!,exception!,any?,each,reject!,there_can_be_only_one!,then,to_proc,fail,always,trace,class,object_id,+,inspect,rescue,nil?,prev,act?,push,concat,it,proc,reverse,pop,<=,length,shift,-,wait,map,reduce,try,tap,all?,find');
+  
+  (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Promise');
 
-    var $nesting = [self].concat($parent_nesting), $Promise_value$1, $Promise_error$2, $Promise_when$3, $Promise_initialize$4, $Promise_value$5, $Promise_act$ques$6, $Promise_action$7, $Promise_exception$ques$8, $Promise_realized$ques$9, $Promise_resolved$ques$10, $Promise_rejected$ques$11, $Promise_$$12, $Promise_$lt$lt$13, $Promise_$gt$gt$14, $Promise_resolve$15, $Promise_resolve$excl$16, $Promise_reject$18, $Promise_reject$excl$19, $Promise_exception$excl$21, $Promise_then$22, $Promise_then$excl$23, $Promise_fail$24, $Promise_fail$excl$25, $Promise_always$26, $Promise_always$excl$27, $Promise_trace$28, $Promise_trace$excl$29, $Promise_there_can_be_only_one$excl$30, $Promise_inspect$31;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-    self.$$prototype.value = self.$$prototype.action = self.$$prototype.exception = self.$$prototype.realized = self.$$prototype.next = self.$$prototype.delayed = self.$$prototype.error = self.$$prototype.prev = nil;
+    $proto.value = $proto.action = $proto.exception = $proto.realized = $proto.next = $proto.delayed = $proto.error = $proto.prev = nil;
     
-    Opal.defs(self, '$value', $Promise_value$1 = function $$value(value) {
+    $defs(self, '$value', function $$value(value) {
       var self = this;
 
       return self.$new().$resolve(value)
-    }, $Promise_value$1.$$arity = 1);
-    Opal.defs(self, '$error', $Promise_error$2 = function $$error(value) {
+    }, 1);
+    $defs(self, '$error', function $$error(value) {
       var self = this;
 
       return self.$new().$reject(value)
-    }, $Promise_error$2.$$arity = 1);
-    Opal.defs(self, '$when', $Promise_when$3 = function $$when($a) {
-      var $post_args, promises, self = this;
+    }, 1);
+    $defs(self, '$when', function $$when($a) {
+      var $post_args, promises;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       promises = $post_args;;
-      return $$($nesting, 'When').$new(promises);
-    }, $Promise_when$3.$$arity = -1);
+      return $$('When').$new(promises);
+    }, -1);
     self.$attr_reader("error", "prev", "next");
     
-    Opal.def(self, '$initialize', $Promise_initialize$4 = function $$initialize(action) {
+    $def(self, '$initialize', function $$initialize(action) {
       var self = this;
 
       
       
-      if (action == null) {
-        action = $hash2([], {});
-      };
+      if (action == null) action = $hash2([], {});;
       self.action = action;
       self.realized = false;
       self.exception = false;
@@ -57,19 +46,19 @@ Opal.modules["promise"] = function(Opal) {
       self.delayed = false;
       self.prev = nil;
       return (self.next = []);
-    }, $Promise_initialize$4.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$value', $Promise_value$5 = function $$value() {
+    $def(self, '$value', function $$value() {
       var self = this;
 
-      if ($truthy($$($nesting, 'Promise')['$==='](self.value))) {
+      if ($eqeqeq($$('Promise'), self.value)) {
         return self.value.$value()
       } else {
         return self.value
       }
-    }, $Promise_value$5.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$act?', $Promise_act$ques$6 = function() {
+    $def(self, '$act?', function $Promise_act$ques$1() {
       var self = this, $ret_or_1 = nil;
 
       if ($truthy(($ret_or_1 = self.action['$key?']("success")))) {
@@ -77,518 +66,461 @@ Opal.modules["promise"] = function(Opal) {
       } else {
         return self.action['$key?']("always")
       }
-    }, $Promise_act$ques$6.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$action', $Promise_action$7 = function $$action() {
+    $def(self, '$action', function $$action() {
       var self = this;
 
       return self.action.$keys()
-    }, $Promise_action$7.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$exception?', $Promise_exception$ques$8 = function() {
+    $def(self, '$exception?', function $Promise_exception$ques$2() {
       var self = this;
 
       return self.exception
-    }, $Promise_exception$ques$8.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$realized?', $Promise_realized$ques$9 = function() {
+    $def(self, '$realized?', function $Promise_realized$ques$3() {
       var self = this;
 
       return self.realized['$!='](false)
-    }, $Promise_realized$ques$9.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$resolved?', $Promise_resolved$ques$10 = function() {
+    $def(self, '$resolved?', function $Promise_resolved$ques$4() {
       var self = this;
 
       return self.realized['$==']("resolve")
-    }, $Promise_resolved$ques$10.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$rejected?', $Promise_rejected$ques$11 = function() {
+    $def(self, '$rejected?', function $Promise_rejected$ques$5() {
       var self = this;
 
       return self.realized['$==']("reject")
-    }, $Promise_rejected$ques$11.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$^', $Promise_$$12 = function(promise) {
+    $def(self, '$^', function $Promise_$$6(promise) {
       var self = this;
 
       
       promise['$<<'](self);
       self['$>>'](promise);
       return promise;
-    }, $Promise_$$12.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$<<', $Promise_$lt$lt$13 = function(promise) {
+    $def(self, '$<<', function $Promise_$lt$lt$7(promise) {
       var self = this;
 
       
       self.prev = promise;
       return self;
-    }, $Promise_$lt$lt$13.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$>>', $Promise_$gt$gt$14 = function(promise) {
-      var self = this, $ret_or_2 = nil;
+    $def(self, '$>>', function $Promise_$gt$gt$8(promise) {
+      var self = this;
 
       
       self.next['$<<'](promise);
       if ($truthy(self['$exception?']())) {
         promise.$reject(self.delayed['$[]'](0))
       } else if ($truthy(self['$resolved?']())) {
-        promise.$resolve((function() {if ($truthy(self.delayed)) {
-          return self.delayed['$[]'](0)
-        } else {
-          return self.$value()
-        }; return nil; })())
+        promise.$resolve(($truthy(self.delayed) ? (self.delayed['$[]'](0)) : (self.$value())))
       } else if ($truthy(self['$rejected?']())) {
-        if ($truthy((function() {if ($truthy(($ret_or_2 = self.action['$key?']("failure")['$!']()))) {
-          return $ret_or_2
-        } else {
-          return $$($nesting, 'Promise')['$===']((function() {if ($truthy(self.delayed)) {
-            return self.delayed['$[]'](0)
-          } else {
-            return self.error
-          }; return nil; })())
-        }; return nil; })())) {
-          promise.$reject((function() {if ($truthy(self.delayed)) {
-            return self.delayed['$[]'](0)
-          } else {
-            return self.$error()
-          }; return nil; })())
+        if (($not(self.action['$key?']("failure")) || ($eqeqeq($$('Promise'), ($truthy(self.delayed) ? (self.delayed['$[]'](0)) : (self.error)))))) {
+          promise.$reject(($truthy(self.delayed) ? (self.delayed['$[]'](0)) : (self.$error())))
         } else if ($truthy(promise.$action()['$include?']("always"))) {
-          promise.$reject((function() {if ($truthy(self.delayed)) {
-            return self.delayed['$[]'](0)
-          } else {
-            return self.$error()
-          }; return nil; })())}};
+          promise.$reject(($truthy(self.delayed) ? (self.delayed['$[]'](0)) : (self.$error())))
+        }
+      };
       return self;
-    }, $Promise_$gt$gt$14.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$resolve', $Promise_resolve$15 = function $$resolve(value) {
-      var self = this, block = nil, $ret_or_3 = nil, e = nil;
+    $def(self, '$resolve', function $$resolve(value) {
+      var self = this, block = nil, $ret_or_1 = nil, e = nil;
 
       
       
-      if (value == null) {
-        value = nil;
-      };
+      if (value == null) value = nil;;
       if ($truthy(self['$realized?']())) {
-        self.$raise($$($nesting, 'ArgumentError'), "the promise has already been realized")};
-      if ($truthy($$($nesting, 'Promise')['$==='](value))) {
-        return value['$<<'](self.prev)['$^'](self)};
+        self.$raise($$('ArgumentError'), "the promise has already been realized")
+      };
+      if ($eqeqeq($$('Promise'), value)) {
+        return value['$<<'](self.prev)['$^'](self)
+      };
       
       try {
         
-        block = (function() {if ($truthy(($ret_or_3 = self.action['$[]']("success")))) {
-          return $ret_or_3
-        } else {
-          return self.action['$[]']("always")
-        }; return nil; })();
+        block = ($truthy(($ret_or_1 = self.action['$[]']("success"))) ? ($ret_or_1) : (self.action['$[]']("always")));
         if ($truthy(block)) {
-          value = block.$call(value)};
+          value = block.$call(value)
+        };
         self['$resolve!'](value);
       } catch ($err) {
-        if (Opal.rescue($err, [$$($nesting, 'Exception')])) {(e = $err)
+        if (Opal.rescue($err, [$$('Exception')])) {(e = $err)
           try {
             self['$exception!'](e)
           } finally { Opal.pop_exception(); }
         } else { throw $err; }
       };;
       return self;
-    }, $Promise_resolve$15.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$resolve!', $Promise_resolve$excl$16 = function(value) {
-      var $$17, self = this;
+    $def(self, '$resolve!', function $Promise_resolve$excl$9(value) {
+      var self = this;
 
       
       self.realized = "resolve";
       self.value = value;
       if ($truthy(self.next['$any?']())) {
-        return $send(self.next, 'each', [], ($$17 = function(p){var self = $$17.$$s == null ? this : $$17.$$s;
-
+        return $send(self.next, 'each', [], function $$10(p){
           
           
-          if (p == null) {
-            p = nil;
-          };
-          return p.$resolve(value);}, $$17.$$s = self, $$17.$$arity = 1, $$17))
+          if (p == null) p = nil;;
+          return p.$resolve(value);}, 1)
       } else {
         return (self.delayed = [value])
       };
-    }, $Promise_resolve$excl$16.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$reject', $Promise_reject$18 = function $$reject(value) {
-      var self = this, block = nil, $ret_or_4 = nil, e = nil;
+    $def(self, '$reject', function $$reject(value) {
+      var self = this, block = nil, $ret_or_1 = nil, e = nil;
 
       
       
-      if (value == null) {
-        value = nil;
-      };
+      if (value == null) value = nil;;
       if ($truthy(self['$realized?']())) {
-        self.$raise($$($nesting, 'ArgumentError'), "the promise has already been realized")};
-      if ($truthy($$($nesting, 'Promise')['$==='](value))) {
-        return value['$<<'](self.prev)['$^'](self)};
+        self.$raise($$('ArgumentError'), "the promise has already been realized")
+      };
+      if ($eqeqeq($$('Promise'), value)) {
+        return value['$<<'](self.prev)['$^'](self)
+      };
       
       try {
         
-        block = (function() {if ($truthy(($ret_or_4 = self.action['$[]']("failure")))) {
-          return $ret_or_4
-        } else {
-          return self.action['$[]']("always")
-        }; return nil; })();
+        block = ($truthy(($ret_or_1 = self.action['$[]']("failure"))) ? ($ret_or_1) : (self.action['$[]']("always")));
         if ($truthy(block)) {
-          value = block.$call(value)};
+          value = block.$call(value)
+        };
         if ($truthy(self.action['$key?']("always"))) {
           self['$resolve!'](value)
         } else {
           self['$reject!'](value)
         };
       } catch ($err) {
-        if (Opal.rescue($err, [$$($nesting, 'Exception')])) {(e = $err)
+        if (Opal.rescue($err, [$$('Exception')])) {(e = $err)
           try {
             self['$exception!'](e)
           } finally { Opal.pop_exception(); }
         } else { throw $err; }
       };;
       return self;
-    }, $Promise_reject$18.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$reject!', $Promise_reject$excl$19 = function(value) {
-      var $$20, self = this;
+    $def(self, '$reject!', function $Promise_reject$excl$11(value) {
+      var self = this;
 
       
       self.realized = "reject";
       self.error = value;
       if ($truthy(self.next['$any?']())) {
-        return $send(self.next, 'each', [], ($$20 = function(p){var self = $$20.$$s == null ? this : $$20.$$s;
-
+        return $send(self.next, 'each', [], function $$12(p){
           
           
-          if (p == null) {
-            p = nil;
-          };
-          return p.$reject(value);}, $$20.$$s = self, $$20.$$arity = 1, $$20))
+          if (p == null) p = nil;;
+          return p.$reject(value);}, 1)
       } else {
         return (self.delayed = [value])
       };
-    }, $Promise_reject$excl$19.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$exception!', $Promise_exception$excl$21 = function(error) {
+    $def(self, '$exception!', function $Promise_exception$excl$13(error) {
       var self = this;
 
       
       self.exception = true;
       return self['$reject!'](error);
-    }, $Promise_exception$excl$21.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$then', $Promise_then$22 = function $$then() {
-      var $iter = $Promise_then$22.$$p, block = $iter || nil, self = this;
+    $def(self, '$then', function $$then() {
+      var block = $$then.$$p || nil, self = this;
 
-      if ($iter) $Promise_then$22.$$p = null;
-      
+      delete $$then.$$p;
       
-      if ($iter) $Promise_then$22.$$p = null;;
-      return self['$^']($$($nesting, 'Promise').$new($hash2(["success"], {"success": block})));
-    }, $Promise_then$22.$$arity = 0);
+      ;
+      return self['$^']($$('Promise').$new($hash2(["success"], {"success": block})));
+    }, 0);
     
-    Opal.def(self, '$then!', $Promise_then$excl$23 = function() {
-      var $iter = $Promise_then$excl$23.$$p, block = $iter || nil, self = this;
+    $def(self, '$then!', function $Promise_then$excl$14() {
+      var block = $Promise_then$excl$14.$$p || nil, self = this;
 
-      if ($iter) $Promise_then$excl$23.$$p = null;
-      
+      delete $Promise_then$excl$14.$$p;
       
-      if ($iter) $Promise_then$excl$23.$$p = null;;
+      ;
       self['$there_can_be_only_one!']();
       return $send(self, 'then', [], block.$to_proc());
-    }, $Promise_then$excl$23.$$arity = 0);
-    $alias(self, "do", "then");
-    $alias(self, "do!", "then!");
+    }, 0);
     
-    Opal.def(self, '$fail', $Promise_fail$24 = function $$fail() {
-      var $iter = $Promise_fail$24.$$p, block = $iter || nil, self = this;
+    $def(self, '$fail', function $$fail() {
+      var block = $$fail.$$p || nil, self = this;
 
-      if ($iter) $Promise_fail$24.$$p = null;
-      
+      delete $$fail.$$p;
       
-      if ($iter) $Promise_fail$24.$$p = null;;
-      return self['$^']($$($nesting, 'Promise').$new($hash2(["failure"], {"failure": block})));
-    }, $Promise_fail$24.$$arity = 0);
+      ;
+      return self['$^']($$('Promise').$new($hash2(["failure"], {"failure": block})));
+    }, 0);
     
-    Opal.def(self, '$fail!', $Promise_fail$excl$25 = function() {
-      var $iter = $Promise_fail$excl$25.$$p, block = $iter || nil, self = this;
+    $def(self, '$fail!', function $Promise_fail$excl$15() {
+      var block = $Promise_fail$excl$15.$$p || nil, self = this;
 
-      if ($iter) $Promise_fail$excl$25.$$p = null;
+      delete $Promise_fail$excl$15.$$p;
       
-      
-      if ($iter) $Promise_fail$excl$25.$$p = null;;
+      ;
       self['$there_can_be_only_one!']();
       return $send(self, 'fail', [], block.$to_proc());
-    }, $Promise_fail$excl$25.$$arity = 0);
-    $alias(self, "rescue", "fail");
-    $alias(self, "catch", "fail");
-    $alias(self, "rescue!", "fail!");
-    $alias(self, "catch!", "fail!");
+    }, 0);
     
-    Opal.def(self, '$always', $Promise_always$26 = function $$always() {
-      var $iter = $Promise_always$26.$$p, block = $iter || nil, self = this;
+    $def(self, '$always', function $$always() {
+      var block = $$always.$$p || nil, self = this;
 
-      if ($iter) $Promise_always$26.$$p = null;
-      
+      delete $$always.$$p;
       
-      if ($iter) $Promise_always$26.$$p = null;;
-      return self['$^']($$($nesting, 'Promise').$new($hash2(["always"], {"always": block})));
-    }, $Promise_always$26.$$arity = 0);
+      ;
+      return self['$^']($$('Promise').$new($hash2(["always"], {"always": block})));
+    }, 0);
     
-    Opal.def(self, '$always!', $Promise_always$excl$27 = function() {
-      var $iter = $Promise_always$excl$27.$$p, block = $iter || nil, self = this;
+    $def(self, '$always!', function $Promise_always$excl$16() {
+      var block = $Promise_always$excl$16.$$p || nil, self = this;
 
-      if ($iter) $Promise_always$excl$27.$$p = null;
+      delete $Promise_always$excl$16.$$p;
       
-      
-      if ($iter) $Promise_always$excl$27.$$p = null;;
+      ;
       self['$there_can_be_only_one!']();
       return $send(self, 'always', [], block.$to_proc());
-    }, $Promise_always$excl$27.$$arity = 0);
-    $alias(self, "finally", "always");
-    $alias(self, "ensure", "always");
-    $alias(self, "finally!", "always!");
-    $alias(self, "ensure!", "always!");
+    }, 0);
     
-    Opal.def(self, '$trace', $Promise_trace$28 = function $$trace(depth) {
-      var $iter = $Promise_trace$28.$$p, block = $iter || nil, self = this;
+    $def(self, '$trace', function $$trace(depth) {
+      var block = $$trace.$$p || nil, self = this;
 
-      if ($iter) $Promise_trace$28.$$p = null;
-      
+      delete $$trace.$$p;
       
-      if ($iter) $Promise_trace$28.$$p = null;;
+      ;
       
-      if (depth == null) {
-        depth = nil;
-      };
-      return self['$^']($$($nesting, 'Trace').$new(depth, block));
-    }, $Promise_trace$28.$$arity = -1);
+      if (depth == null) depth = nil;;
+      return self['$^']($$('Trace').$new(depth, block));
+    }, -1);
     
-    Opal.def(self, '$trace!', $Promise_trace$excl$29 = function($a) {
-      var $iter = $Promise_trace$excl$29.$$p, block = $iter || nil, $post_args, args, self = this;
+    $def(self, '$trace!', function $Promise_trace$excl$17($a) {
+      var block = $Promise_trace$excl$17.$$p || nil, $post_args, args, self = this;
 
-      if ($iter) $Promise_trace$excl$29.$$p = null;
-      
+      delete $Promise_trace$excl$17.$$p;
       
-      if ($iter) $Promise_trace$excl$29.$$p = null;;
+      ;
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
       self['$there_can_be_only_one!']();
-      return $send(self, 'trace', Opal.to_a(args), block.$to_proc());
-    }, $Promise_trace$excl$29.$$arity = -1);
+      return $send(self, 'trace', $to_a(args), block.$to_proc());
+    }, -1);
     
-    Opal.def(self, '$there_can_be_only_one!', $Promise_there_can_be_only_one$excl$30 = function() {
+    $def(self, '$there_can_be_only_one!', function $Promise_there_can_be_only_one$excl$18() {
       var self = this;
 
       if ($truthy(self.next['$any?']())) {
-        return self.$raise($$($nesting, 'ArgumentError'), "a promise has already been chained")
+        return self.$raise($$('ArgumentError'), "a promise has already been chained")
       } else {
         return nil
       }
-    }, $Promise_there_can_be_only_one$excl$30.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$inspect', $Promise_inspect$31 = function $$inspect() {
-      var self = this, result = nil, $ret_or_5 = nil;
+    $def(self, '$inspect', function $$inspect() {
+      var self = this, result = nil, $ret_or_1 = nil;
 
       
-      result = "" + "#<" + (self.$class()) + "(" + (self.$object_id()) + ")";
+      result = "#<" + (self.$class()) + "(" + (self.$object_id()) + ")";
       if ($truthy(self.next['$any?']())) {
-        result = $rb_plus(result, "" + " >> " + (self.next.$inspect()))};
-      result = $rb_plus(result, (function() {if ($truthy(self['$realized?']())) {
-        return "" + ": " + ((function() {if ($truthy(($ret_or_5 = self.value))) {
-          return $ret_or_5
-        } else {
-          return self.error
-        }; return nil; })().$inspect()) + ">"
-      } else {
-        return ">"
-      }; return nil; })());
+        result = $rb_plus(result, " >> " + (self.next.$inspect()))
+      };
+      result = $rb_plus(result, ($truthy(self['$realized?']()) ? (": " + (($truthy(($ret_or_1 = self.value)) ? ($ret_or_1) : (self.error)).$inspect()) + ">") : (">")));
       return result;
-    }, $Promise_inspect$31.$$arity = 0);
+    }, 0);
+    
+    $def(self, '$to_v2', function $$to_v2() {
+      var self = this, v2 = nil;
+
+      
+      v2 = $$('PromiseV2').$new();
+      $send($send(self, 'then', [], function $$19(i){
+        
+        
+        if (i == null) i = nil;;
+        return v2.$resolve(i);}, 1), 'rescue', [], function $$20(i){
+        
+        
+        if (i == null) i = nil;;
+        return v2.$reject(i);}, 1);
+      return v2;
+    }, 0);
+    $alias(self, "catch", "fail");
+    $alias(self, "catch!", "fail!");
+    $alias(self, "do", "then");
+    $alias(self, "do!", "then!");
+    $alias(self, "ensure", "always");
+    $alias(self, "ensure!", "always!");
+    $alias(self, "finally", "always");
+    $alias(self, "finally!", "always!");
+    $alias(self, "rescue", "fail");
+    $alias(self, "rescue!", "fail!");
+    $alias(self, "to_n", "to_v2");
+    $alias(self, "to_v1", "itself");
     (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Trace');
 
-      var $nesting = [self].concat($parent_nesting), $Trace_it$32, $Trace_initialize$33;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
-      Opal.defs(self, '$it', $Trace_it$32 = function $$it(promise) {
-        var self = this, current = nil, $ret_or_6 = nil, prev = nil;
+      $defs(self, '$it', function $$it(promise) {
+        var self = this, current = nil, prev = nil;
 
         
         current = [];
-        if ($truthy((function() {if ($truthy(($ret_or_6 = promise['$act?']()))) {
-          return $ret_or_6
-        } else {
-          return promise.$prev()['$nil?']()
-        }; return nil; })())) {
-          current.$push(promise.$value())};
+        if (($truthy(promise['$act?']()) || ($truthy(promise.$prev()['$nil?']())))) {
+          current.$push(promise.$value())
+        };
         prev = promise.$prev();
         if ($truthy(prev)) {
           return current.$concat(self.$it(prev))
         } else {
           return current
         };
-      }, $Trace_it$32.$$arity = 1);
-      return (Opal.def(self, '$initialize', $Trace_initialize$33 = function $$initialize(depth, block) {
-        var $$34, $iter = $Trace_initialize$33.$$p, $yield = $iter || nil, self = this;
+      }, 1);
+      return $def(self, '$initialize', function $$initialize(depth, block) {
+        var $yield = $$initialize.$$p || nil, self = this;
 
-        if ($iter) $Trace_initialize$33.$$p = null;
+        delete $$initialize.$$p;
         
         self.depth = depth;
-        return $send2(self, $find_super(self, 'initialize', $Trace_initialize$33, false, true), 'initialize', [$hash2(["success"], {"success": $send(self, 'proc', [], ($$34 = function(){var self = $$34.$$s == null ? this : $$34.$$s, trace = nil, $ret_or_7 = nil;
+        return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [$hash2(["success"], {"success": $send(self, 'proc', [], function $$21(){var self = $$21.$$s == null ? this : $$21.$$s, trace = nil;
 
           
-          trace = $$($nesting, 'Trace').$it(self).$reverse();
+          trace = $$('Trace').$it(self).$reverse();
           trace.$pop();
-          if ($truthy((function() {if ($truthy(($ret_or_7 = depth))) {
-            return $rb_le(depth, trace.$length())
-          } else {
-            return $ret_or_7
-          }; return nil; })())) {
-            trace.$shift($rb_minus(trace.$length(), depth))};
-          return $send(block, 'call', Opal.to_a(trace));}, $$34.$$s = self, $$34.$$arity = 0, $$34))})], null);
-      }, $Trace_initialize$33.$$arity = 2), nil) && 'initialize';
+          if (($truthy(depth) && ($truthy($rb_le(depth, trace.$length()))))) {
+            trace.$shift($rb_minus(trace.$length(), depth))
+          };
+          return $send(block, 'call', $to_a(trace));}, {$$arity: 0, $$s: self})})], null);
+      }, 2);
     })($nesting[0], self, $nesting);
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'When');
 
-      var $nesting = [self].concat($parent_nesting), $When_initialize$35, $When_each$37, $When_collect$39, $When_inject$41, $When_wait$43, $When_$gt$gt$45, $When_try$47;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.wait = nil;
+      $proto.wait = nil;
       
       
-      Opal.def(self, '$initialize', $When_initialize$35 = function $$initialize(promises) {
-        var $$36, $iter = $When_initialize$35.$$p, $yield = $iter || nil, self = this;
+      $def(self, '$initialize', function $$initialize(promises) {
+        var $yield = $$initialize.$$p || nil, self = this;
 
-        if ($iter) $When_initialize$35.$$p = null;
+        delete $$initialize.$$p;
         
         
-        if (promises == null) {
-          promises = [];
-        };
-        $send2(self, $find_super(self, 'initialize', $When_initialize$35, false, true), 'initialize', [], null);
+        if (promises == null) promises = [];;
+        $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [], null);
         self.wait = [];
-        return $send(promises, 'each', [], ($$36 = function(promise){var self = $$36.$$s == null ? this : $$36.$$s;
+        return $send(promises, 'each', [], function $$22(promise){var self = $$22.$$s == null ? this : $$22.$$s;
 
           
           
-          if (promise == null) {
-            promise = nil;
-          };
-          return self.$wait(promise);}, $$36.$$s = self, $$36.$$arity = 1, $$36));
-      }, $When_initialize$35.$$arity = -1);
+          if (promise == null) promise = nil;;
+          return self.$wait(promise);}, {$$arity: 1, $$s: self});
+      }, -1);
       
-      Opal.def(self, '$each', $When_each$37 = function $$each() {
-        var $iter = $When_each$37.$$p, block = $iter || nil, $$38, self = this;
+      $def(self, '$each', function $$each() {
+        var block = $$each.$$p || nil, self = this;
 
-        if ($iter) $When_each$37.$$p = null;
-        
+        delete $$each.$$p;
         
-        if ($iter) $When_each$37.$$p = null;;
-        if ($truthy(block)) {
-        } else {
-          self.$raise($$($nesting, 'ArgumentError'), "no block given")
+        ;
+        if (!$truthy(block)) {
+          self.$raise($$('ArgumentError'), "no block given")
         };
-        return $send(self, 'then', [], ($$38 = function(values){var self = $$38.$$s == null ? this : $$38.$$s;
-
+        return $send(self, 'then', [], function $$23(values){
           
           
-          if (values == null) {
-            values = nil;
-          };
-          return $send(values, 'each', [], block.$to_proc());}, $$38.$$s = self, $$38.$$arity = 1, $$38));
-      }, $When_each$37.$$arity = 0);
+          if (values == null) values = nil;;
+          return $send(values, 'each', [], block.$to_proc());}, 1);
+      }, 0);
       
-      Opal.def(self, '$collect', $When_collect$39 = function $$collect() {
-        var $iter = $When_collect$39.$$p, block = $iter || nil, $$40, self = this;
+      $def(self, '$collect', function $$collect() {
+        var block = $$collect.$$p || nil, self = this;
 
-        if ($iter) $When_collect$39.$$p = null;
-        
+        delete $$collect.$$p;
         
-        if ($iter) $When_collect$39.$$p = null;;
-        if ($truthy(block)) {
-        } else {
-          self.$raise($$($nesting, 'ArgumentError'), "no block given")
+        ;
+        if (!$truthy(block)) {
+          self.$raise($$('ArgumentError'), "no block given")
         };
-        return $send(self, 'then', [], ($$40 = function(values){var self = $$40.$$s == null ? this : $$40.$$s;
-
+        return $send(self, 'then', [], function $$24(values){
           
           
-          if (values == null) {
-            values = nil;
-          };
-          return $$($nesting, 'When').$new($send(values, 'map', [], block.$to_proc()));}, $$40.$$s = self, $$40.$$arity = 1, $$40));
-      }, $When_collect$39.$$arity = 0);
+          if (values == null) values = nil;;
+          return $$('When').$new($send(values, 'map', [], block.$to_proc()));}, 1);
+      }, 0);
       
-      Opal.def(self, '$inject', $When_inject$41 = function $$inject($a) {
-        var $iter = $When_inject$41.$$p, block = $iter || nil, $post_args, args, $$42, self = this;
+      $def(self, '$inject', function $$inject($a) {
+        var block = $$inject.$$p || nil, $post_args, args, self = this;
 
-        if ($iter) $When_inject$41.$$p = null;
-        
+        delete $$inject.$$p;
         
-        if ($iter) $When_inject$41.$$p = null;;
+        ;
         
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
+        $post_args = Opal.slice.call(arguments);
         
         args = $post_args;;
-        return $send(self, 'then', [], ($$42 = function(values){var self = $$42.$$s == null ? this : $$42.$$s;
-
+        return $send(self, 'then', [], function $$25(values){
           
           
-          if (values == null) {
-            values = nil;
-          };
-          return $send(values, 'reduce', Opal.to_a(args), block.$to_proc());}, $$42.$$s = self, $$42.$$arity = 1, $$42));
-      }, $When_inject$41.$$arity = -1);
-      $alias(self, "map", "collect");
-      $alias(self, "reduce", "inject");
+          if (values == null) values = nil;;
+          return $send(values, 'reduce', $to_a(args), block.$to_proc());}, 1);
+      }, -1);
       
-      Opal.def(self, '$wait', $When_wait$43 = function $$wait(promise) {
-        var $$44, self = this;
+      $def(self, '$wait', function $$wait(promise) {
+        var self = this;
 
         
-        if ($truthy($$($nesting, 'Promise')['$==='](promise))) {
-        } else {
-          promise = $$($nesting, 'Promise').$value(promise)
+        if (!$eqeqeq($$('Promise'), promise)) {
+          promise = $$('Promise').$value(promise)
         };
         if ($truthy(promise['$act?']())) {
-          promise = promise.$then()};
+          promise = promise.$then()
+        };
         self.wait['$<<'](promise);
-        $send(promise, 'always', [], ($$44 = function(){var self = $$44.$$s == null ? this : $$44.$$s;
+        $send(promise, 'always', [], function $$26(){var self = $$26.$$s == null ? this : $$26.$$s;
           if (self.next == null) self.next = nil;
 
           if ($truthy(self.next['$any?']())) {
             return self.$try()
           } else {
             return nil
-          }}, $$44.$$s = self, $$44.$$arity = 0, $$44));
+          }}, {$$arity: 0, $$s: self});
         return self;
-      }, $When_wait$43.$$arity = 1);
-      $alias(self, "and", "wait");
+      }, 1);
       
-      Opal.def(self, '$>>', $When_$gt$gt$45 = function($a) {
-        var $post_args, $$46, $iter = $When_$gt$gt$45.$$p, $yield = $iter || nil, self = this, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+      $def(self, '$>>', function $When_$gt$gt$27($a) {
+        var $post_args, $rest_arg, $yield = $When_$gt$gt$27.$$p || nil, self = this;
 
-        if ($iter) $When_$gt$gt$45.$$p = null;
-        // Prepare super implicit arguments
-        for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-          $zuper[$zuper_i] = arguments[$zuper_i];
-        }
+        delete $When_$gt$gt$27.$$p;
         
         
-        $post_args = Opal.slice.call(arguments, 0, arguments.length);
-        ;
-        return $send($send2(self, $find_super(self, '>>', $When_$gt$gt$45, false, true), '>>', $zuper, $iter), 'tap', [], ($$46 = function(){var self = $$46.$$s == null ? this : $$46.$$s;
+        $post_args = Opal.slice.call(arguments);
+        
+        $rest_arg = $post_args;;
+        return $send($send2(self, $find_super(self, '>>', $When_$gt$gt$27, false, true), '>>', $to_a($rest_arg), $yield), 'tap', [], function $$28(){var self = $$28.$$s == null ? this : $$28.$$s;
 
-          return self.$try()}, $$46.$$s = self, $$46.$$arity = 0, $$46));
-      }, $When_$gt$gt$45.$$arity = -1);
-      return (Opal.def(self, '$try', $When_try$47 = function() {
+          return self.$try()}, {$$arity: 0, $$s: self});
+      }, -1);
+      
+      $def(self, '$try', function $When_try$29() {
         var self = this, promise = nil;
 
         if ($truthy($send(self.wait, 'all?', [], "realized?".$to_proc()))) {
@@ -602,7 +534,11 @@ Opal.modules["promise"] = function(Opal) {
         } else {
           return nil
         }
-      }, $When_try$47.$$arity = 0), nil) && 'try';
+      }, 0);
+      $alias(self, "map", "collect");
+      $alias(self, "reduce", "inject");
+      return $alias(self, "and", "wait");
     })($nesting[0], self, $nesting);
-  })($nesting[0], null, $nesting)
+  })($nesting[0], null, $nesting);
+  return $const_set($nesting[0], 'PromiseV1', $$('Promise'));
 };
diff --git a/opal/master/promise.min.js b/opal/master/promise.min.js
index b3d6d0bb..111a54da 100644
--- a/opal/master/promise.min.js
+++ b/opal/master/promise.min.js
@@ -1 +1 @@
-Opal.modules.promise=function(Opal){function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$klass=Opal.klass,$hash2=Opal.hash2,$truthy=Opal.truthy,$send=Opal.send,$alias=Opal.alias,$send2=Opal.send2,$find_super=Opal.find_super;return Opal.add_stubs(["$resolve","$new","$reject","$attr_reader","$===","$value","$key?","$keys","$!=","$==","$<<","$>>","$exception?","$[]","$resolved?","$rejected?","$!","$error","$include?","$action","$realized?","$raise","$^","$call","$resolve!","$exception!","$any?","$each","$reject!","$there_can_be_only_one!","$then","$to_proc","$fail","$always","$trace","$class","$object_id","$+","$inspect","$act?","$nil?","$prev","$push","$concat","$it","$proc","$reverse","$pop","$<=","$length","$shift","$-","$wait","$map","$reduce","$try","$tap","$all?","$find"]),function(self,$Promise_inspect$31){var $Promise_then$22,$Promise_then$excl$23,$Promise_fail$24,$Promise_fail$excl$25,$Promise_always$26,$Promise_always$excl$27,$Promise_trace$28,$Promise_trace$excl$29,self=$klass(self,null,"Promise"),$nesting=[self].concat($Promise_inspect$31);return self.$$prototype.value=self.$$prototype.action=self.$$prototype.exception=self.$$prototype.realized=self.$$prototype.next=self.$$prototype.delayed=self.$$prototype.error=self.$$prototype.prev=nil,Opal.defs(self,"$value",$Promise_inspect$31=function(value){return this.$new().$resolve(value)},$Promise_inspect$31.$$arity=1),Opal.defs(self,"$error",$Promise_inspect$31=function(value){return this.$new().$reject(value)},$Promise_inspect$31.$$arity=1),Opal.defs(self,"$when",$Promise_inspect$31=function($a){var promises=Opal.slice.call(arguments,0,arguments.length);return $$($nesting,"When").$new(promises)},$Promise_inspect$31.$$arity=-1),self.$attr_reader("error","prev","next"),Opal.def(self,"$initialize",$Promise_inspect$31=function(action){return null==action&&(action=$hash2([],{})),this.action=action,this.realized=!1,this.exception=!1,this.value=nil,this.error=nil,this.delayed=!1,this.prev=nil,this.next=[]},$Promise_inspect$31.$$arity=-1),Opal.def(self,"$value",$Promise_inspect$31=function(){return $truthy($$($nesting,"Promise")["$==="](this.value))?this.value.$value():this.value},$Promise_inspect$31.$$arity=0),Opal.def(self,"$act?",$Promise_inspect$31=function(){var $ret_or_1;return $truthy($ret_or_1=this.action["$key?"]("success"))?$ret_or_1:this.action["$key?"]("always")},$Promise_inspect$31.$$arity=0),Opal.def(self,"$action",$Promise_inspect$31=function(){return this.action.$keys()},$Promise_inspect$31.$$arity=0),Opal.def(self,"$exception?",$Promise_inspect$31=function(){return this.exception},$Promise_inspect$31.$$arity=0),Opal.def(self,"$realized?",$Promise_inspect$31=function(){return this.realized["$!="](!1)},$Promise_inspect$31.$$arity=0),Opal.def(self,"$resolved?",$Promise_inspect$31=function(){return this.realized["$=="]("resolve")},$Promise_inspect$31.$$arity=0),Opal.def(self,"$rejected?",$Promise_inspect$31=function(){return this.realized["$=="]("reject")},$Promise_inspect$31.$$arity=0),Opal.def(self,"$^",$Promise_inspect$31=function(promise){return promise["$<<"](this),this["$>>"](promise),promise},$Promise_inspect$31.$$arity=1),Opal.def(self,"$<<",$Promise_inspect$31=function(promise){return this.prev=promise,this},$Promise_inspect$31.$$arity=1),Opal.def(self,"$>>",$Promise_inspect$31=function(promise){var self=this,$ret_or_2=nil;return self.next["$<<"](promise),$truthy(self["$exception?"]())?promise.$reject(self.delayed["$[]"](0)):$truthy(self["$resolved?"]())?promise.$resolve($truthy(self.delayed)?self.delayed["$[]"](0):self.$value()):$truthy(self["$rejected?"]())&&($truthy($truthy($ret_or_2=self.action["$key?"]("failure")["$!"]())?$ret_or_2:$$($nesting,"Promise")["$==="]($truthy(self.delayed)?self.delayed["$[]"](0):self.error))||$truthy(promise.$action()["$include?"]("always")))&&promise.$reject($truthy(self.delayed)?self.delayed["$[]"](0):self.$error()),self},$Promise_inspect$31.$$arity=1),Opal.def(self,"$resolve",$Promise_inspect$31=function(value){var e,self=this,block=nil,$ret_or_3=nil;if(null==value&&(value=nil),$truthy(self["$realized?"]())&&self.$raise($$($nesting,"ArgumentError"),"the promise has already been realized"),$truthy($$($nesting,"Promise")["$==="](value)))return value["$<<"](self.prev)["$^"](self);try{block=$truthy($ret_or_3=self.action["$[]"]("success"))?$ret_or_3:self.action["$[]"]("always"),$truthy(block)&&(value=block.$call(value)),self["$resolve!"](value)}catch($err){if(!Opal.rescue($err,[$$($nesting,"Exception")]))throw $err;e=$err;try{self["$exception!"](e)}finally{Opal.pop_exception()}}return self},$Promise_inspect$31.$$arity=-1),Opal.def(self,"$resolve!",$Promise_inspect$31=function(value){var $$17;return this.realized="resolve",this.value=value,$truthy(this.next["$any?"]())?$send(this.next,"each",[],(($$17=function(p){null==$$17.$$s||$$17.$$s;return null==p&&(p=nil),p.$resolve(value)}).$$s=this,$$17.$$arity=1,$$17)):this.delayed=[value]},$Promise_inspect$31.$$arity=1),Opal.def(self,"$reject",$Promise_inspect$31=function(value){var e,self=this,block=nil,$ret_or_4=nil;if(null==value&&(value=nil),$truthy(self["$realized?"]())&&self.$raise($$($nesting,"ArgumentError"),"the promise has already been realized"),$truthy($$($nesting,"Promise")["$==="](value)))return value["$<<"](self.prev)["$^"](self);try{block=$truthy($ret_or_4=self.action["$[]"]("failure"))?$ret_or_4:self.action["$[]"]("always"),$truthy(block)&&(value=block.$call(value)),$truthy(self.action["$key?"]("always"))?self["$resolve!"](value):self["$reject!"](value)}catch($err){if(!Opal.rescue($err,[$$($nesting,"Exception")]))throw $err;e=$err;try{self["$exception!"](e)}finally{Opal.pop_exception()}}return self},$Promise_inspect$31.$$arity=-1),Opal.def(self,"$reject!",$Promise_inspect$31=function(value){var $$20;return this.realized="reject",this.error=value,$truthy(this.next["$any?"]())?$send(this.next,"each",[],(($$20=function(p){null==$$20.$$s||$$20.$$s;return null==p&&(p=nil),p.$reject(value)}).$$s=this,$$20.$$arity=1,$$20)):this.delayed=[value]},$Promise_inspect$31.$$arity=1),Opal.def(self,"$exception!",$Promise_inspect$31=function(error){return this.exception=!0,this["$reject!"](error)},$Promise_inspect$31.$$arity=1),Opal.def(self,"$then",$Promise_then$22=function(){var $iter=$Promise_then$22.$$p,block=$iter||nil;return $iter&&($Promise_then$22.$$p=null),$iter&&($Promise_then$22.$$p=null),this["$^"]($$($nesting,"Promise").$new($hash2(["success"],{success:block})))},$Promise_then$22.$$arity=0),Opal.def(self,"$then!",$Promise_then$excl$23=function(){var $iter=$Promise_then$excl$23.$$p,block=$iter||nil;return $iter&&($Promise_then$excl$23.$$p=null),$iter&&($Promise_then$excl$23.$$p=null),this["$there_can_be_only_one!"](),$send(this,"then",[],block.$to_proc())},$Promise_then$excl$23.$$arity=0),$alias(self,"do","then"),$alias(self,"do!","then!"),Opal.def(self,"$fail",$Promise_fail$24=function(){var $iter=$Promise_fail$24.$$p,block=$iter||nil;return $iter&&($Promise_fail$24.$$p=null),$iter&&($Promise_fail$24.$$p=null),this["$^"]($$($nesting,"Promise").$new($hash2(["failure"],{failure:block})))},$Promise_fail$24.$$arity=0),Opal.def(self,"$fail!",$Promise_fail$excl$25=function(){var $iter=$Promise_fail$excl$25.$$p,block=$iter||nil;return $iter&&($Promise_fail$excl$25.$$p=null),$iter&&($Promise_fail$excl$25.$$p=null),this["$there_can_be_only_one!"](),$send(this,"fail",[],block.$to_proc())},$Promise_fail$excl$25.$$arity=0),$alias(self,"rescue","fail"),$alias(self,"catch","fail"),$alias(self,"rescue!","fail!"),$alias(self,"catch!","fail!"),Opal.def(self,"$always",$Promise_always$26=function(){var $iter=$Promise_always$26.$$p,block=$iter||nil;return $iter&&($Promise_always$26.$$p=null),$iter&&($Promise_always$26.$$p=null),this["$^"]($$($nesting,"Promise").$new($hash2(["always"],{always:block})))},$Promise_always$26.$$arity=0),Opal.def(self,"$always!",$Promise_always$excl$27=function(){var $iter=$Promise_always$excl$27.$$p,block=$iter||nil;return $iter&&($Promise_always$excl$27.$$p=null),$iter&&($Promise_always$excl$27.$$p=null),this["$there_can_be_only_one!"](),$send(this,"always",[],block.$to_proc())},$Promise_always$excl$27.$$arity=0),$alias(self,"finally","always"),$alias(self,"ensure","always"),$alias(self,"finally!","always!"),$alias(self,"ensure!","always!"),Opal.def(self,"$trace",$Promise_trace$28=function(depth){var $iter=$Promise_trace$28.$$p,block=$iter||nil;return $iter&&($Promise_trace$28.$$p=null),$iter&&($Promise_trace$28.$$p=null),null==depth&&(depth=nil),this["$^"]($$($nesting,"Trace").$new(depth,block))},$Promise_trace$28.$$arity=-1),Opal.def(self,"$trace!",$Promise_trace$excl$29=function($a){var args=$Promise_trace$excl$29.$$p,block=args||nil;return args&&($Promise_trace$excl$29.$$p=null),args&&($Promise_trace$excl$29.$$p=null),args=Opal.slice.call(arguments,0,arguments.length),this["$there_can_be_only_one!"](),$send(this,"trace",Opal.to_a(args),block.$to_proc())},$Promise_trace$excl$29.$$arity=-1),Opal.def(self,"$there_can_be_only_one!",$Promise_inspect$31=function(){return $truthy(this.next["$any?"]())?this.$raise($$($nesting,"ArgumentError"),"a promise has already been chained"):nil},$Promise_inspect$31.$$arity=0),Opal.def(self,"$inspect",$Promise_inspect$31=function(){var self=this,result=nil,$ret_or_5=nil,result="#<"+self.$class()+"("+self.$object_id()+")";return $truthy(self.next["$any?"]())&&(result=$rb_plus(result," >> "+self.next.$inspect())),result=$rb_plus(result,$truthy(self["$realized?"]())?": "+($truthy($ret_or_5=self.value)?$ret_or_5:self.error).$inspect()+">":">")},$Promise_inspect$31.$$arity=0),function($base,self,$Trace_it$32){var $Trace_initialize$33,$nesting=[self=$klass($base,self,"Trace")].concat($Trace_it$32);Opal.defs(self,"$it",$Trace_it$32=function(promise){var prev,current=nil,$ret_or_6=nil,current=[];return $truthy($truthy($ret_or_6=promise["$act?"]())?$ret_or_6:promise.$prev()["$nil?"]())&&current.$push(promise.$value()),prev=promise.$prev(),$truthy(prev)?current.$concat(this.$it(prev)):current},$Trace_it$32.$$arity=1),Opal.def(self,"$initialize",$Trace_initialize$33=function(depth,block){var $$34,$iter=$Trace_initialize$33.$$p;return $iter&&($Trace_initialize$33.$$p=null),this.depth=depth,$send2(this,$find_super(this,"initialize",$Trace_initialize$33,!1,!0),"initialize",[$hash2(["success"],{success:$send(this,"proc",[],(($$34=function(){var $ret_or_7,lhs,rhs=null==$$34.$$s?this:$$34.$$s,trace=nil;return(trace=$$($nesting,"Trace").$it(rhs).$reverse()).$pop(),$truthy($truthy($ret_or_7=depth)?(lhs=depth,rhs=trace.$length(),"number"==typeof lhs&&"number"==typeof rhs?lhs<=rhs:lhs["$<="](rhs)):$ret_or_7)&&trace.$shift(function(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}(trace.$length(),depth)),$send(block,"call",Opal.to_a(trace))}).$$s=this,$$34.$$arity=0,$$34))})],null)},$Trace_initialize$33.$$arity=2)}($nesting[0],self,$nesting),function($base,$When_try$47,$When_wait$43){var $When_initialize$35,$When_each$37,$When_collect$39,$When_inject$41,$When_$gt$gt$45,$When_try$47=$klass($base,$When_try$47,"When"),$nesting=[$When_try$47].concat($When_wait$43);return $When_try$47.$$prototype.wait=nil,Opal.def($When_try$47,"$initialize",$When_initialize$35=function(promises){var $$36,$iter=$When_initialize$35.$$p;return $iter&&($When_initialize$35.$$p=null),null==promises&&(promises=[]),$send2(this,$find_super(this,"initialize",$When_initialize$35,!1,!0),"initialize",[],null),this.wait=[],$send(promises,"each",[],(($$36=function(promise){var self=null==$$36.$$s?this:$$36.$$s;return null==promise&&(promise=nil),self.$wait(promise)}).$$s=this,$$36.$$arity=1,$$36))},$When_initialize$35.$$arity=-1),Opal.def($When_try$47,"$each",$When_each$37=function(){var $$38,$iter=$When_each$37.$$p,block=$iter||nil;return $iter&&($When_each$37.$$p=null),$iter&&($When_each$37.$$p=null),$truthy(block)||this.$raise($$($nesting,"ArgumentError"),"no block given"),$send(this,"then",[],(($$38=function(values){null==$$38.$$s||$$38.$$s;return null==values&&(values=nil),$send(values,"each",[],block.$to_proc())}).$$s=this,$$38.$$arity=1,$$38))},$When_each$37.$$arity=0),Opal.def($When_try$47,"$collect",$When_collect$39=function(){var $$40,$iter=$When_collect$39.$$p,block=$iter||nil;return $iter&&($When_collect$39.$$p=null),$iter&&($When_collect$39.$$p=null),$truthy(block)||this.$raise($$($nesting,"ArgumentError"),"no block given"),$send(this,"then",[],(($$40=function(values){null==$$40.$$s||$$40.$$s;return null==values&&(values=nil),$$($nesting,"When").$new($send(values,"map",[],block.$to_proc()))}).$$s=this,$$40.$$arity=1,$$40))},$When_collect$39.$$arity=0),Opal.def($When_try$47,"$inject",$When_inject$41=function($a){var args,$$42,$post_args=$When_inject$41.$$p,block=$post_args||nil;return $post_args&&($When_inject$41.$$p=null),$post_args&&($When_inject$41.$$p=null),$post_args=Opal.slice.call(arguments,0,arguments.length),args=$post_args,$send(this,"then",[],(($$42=function(values){null==$$42.$$s||$$42.$$s;return null==values&&(values=nil),$send(values,"reduce",Opal.to_a(args),block.$to_proc())}).$$s=this,$$42.$$arity=1,$$42))},$When_inject$41.$$arity=-1),$alias($When_try$47,"map","collect"),$alias($When_try$47,"reduce","inject"),Opal.def($When_try$47,"$wait",$When_wait$43=function(promise){var $$44;return $truthy($$($nesting,"Promise")["$==="](promise))||(promise=$$($nesting,"Promise").$value(promise)),$truthy(promise["$act?"]())&&(promise=promise.$then()),this.wait["$<<"](promise),$send(promise,"always",[],(($$44=function(){var self=null==$$44.$$s?this:$$44.$$s;return null==self.next&&(self.next=nil),$truthy(self.next["$any?"]())?self.$try():nil}).$$s=this,$$44.$$arity=0,$$44)),this},$When_wait$43.$$arity=1),$alias($When_try$47,"and","wait"),Opal.def($When_try$47,"$>>",$When_$gt$gt$45=function($a){var $$46,$zuper_ii,$iter=$When_$gt$gt$45.$$p,$zuper=nil,$zuper_i=nil;for($iter&&($When_$gt$gt$45.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return Opal.slice.call(arguments,0,arguments.length),$send($send2(this,$find_super(this,">>",$When_$gt$gt$45,!1,!0),">>",$zuper,$iter),"tap",[],(($$46=function(){return(null==$$46.$$s?this:$$46.$$s).$try()}).$$s=this,$$46.$$arity=0,$$46))},$When_$gt$gt$45.$$arity=-1),Opal.def($When_try$47,"$try",$When_try$47=function(){var promise=nil;return $truthy($send(this.wait,"all?",[],"realized?".$to_proc()))?(promise=$send(this.wait,"find",[],"rejected?".$to_proc()),$truthy(promise)?this.$reject(promise.$error()):this.$resolve($send(this.wait,"map",[],"value".$to_proc()))):nil},$When_try$47.$$arity=0),nil&&"try"}($nesting[0],self,$nesting)}($nesting[0],$nesting)};
+Opal.modules.promise=function(Opal){var $nesting=[],$$=Opal.$r($nesting),nil=Opal.nil,$klass=Opal.klass,$defs=Opal.defs,$hash2=Opal.hash2,$def=Opal.def,$eqeqeq=Opal.eqeqeq,$truthy=Opal.truthy,$not=Opal.not,$send=Opal.send,$to_a=Opal.to_a,$rb_plus=Opal.rb_plus,$alias=Opal.alias,$send2=Opal.send2,$find_super=Opal.find_super,$rb_le=Opal.rb_le,$rb_minus=Opal.rb_minus,$const_set=Opal.const_set;return Opal.add_stubs("resolve,new,reject,attr_reader,===,value,key?,keys,!=,==,<<,>>,exception?,[],resolved?,rejected?,!,error,include?,action,realized?,raise,^,call,resolve!,exception!,any?,each,reject!,there_can_be_only_one!,then,to_proc,fail,always,trace,class,object_id,+,inspect,rescue,nil?,prev,act?,push,concat,it,proc,reverse,pop,<=,length,shift,-,wait,map,reduce,try,tap,all?,find"),function($base,$super,$parent_nesting){var self=$klass($base,null,"Promise"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;$proto.value=$proto.action=$proto.exception=$proto.realized=$proto.next=$proto.delayed=$proto.error=$proto.prev=nil,$defs(self,"$value",(function(value){return this.$new().$resolve(value)}),1),$defs(self,"$error",(function(value){return this.$new().$reject(value)}),1),$defs(self,"$when",(function($a){var promises;return promises=Opal.slice.call(arguments),$$("When").$new(promises)}),-1),self.$attr_reader("error","prev","next"),$def(self,"$initialize",(function(action){return null==action&&(action=$hash2([],{})),this.action=action,this.realized=!1,this.exception=!1,this.value=nil,this.error=nil,this.delayed=!1,this.prev=nil,this.next=[]}),-1),$def(self,"$value",(function(){return $eqeqeq($$("Promise"),this.value)?this.value.$value():this.value}),0),$def(self,"$act?",(function(){var $ret_or_1;return $truthy($ret_or_1=this.action["$key?"]("success"))?$ret_or_1:this.action["$key?"]("always")}),0),$def(self,"$action",(function(){return this.action.$keys()}),0),$def(self,"$exception?",(function(){return this.exception}),0),$def(self,"$realized?",(function(){return this.realized["$!="](!1)}),0),$def(self,"$resolved?",(function(){return this.realized["$=="]("resolve")}),0),$def(self,"$rejected?",(function(){return this.realized["$=="]("reject")}),0),$def(self,"$^",(function(promise){return promise["$<<"](this),this["$>>"](promise),promise}),1),$def(self,"$<<",(function(promise){return this.prev=promise,this}),1),$def(self,"$>>",(function(promise){return this.next["$<<"](promise),$truthy(this["$exception?"]())?promise.$reject(this.delayed["$[]"](0)):$truthy(this["$resolved?"]())?promise.$resolve($truthy(this.delayed)?this.delayed["$[]"](0):this.$value()):$truthy(this["$rejected?"]())&&($not(this.action["$key?"]("failure"))||$eqeqeq($$("Promise"),$truthy(this.delayed)?this.delayed["$[]"](0):this.error)||$truthy(promise.$action()["$include?"]("always")))&&promise.$reject($truthy(this.delayed)?this.delayed["$[]"](0):this.$error()),this}),1),$def(self,"$resolve",(function(value){var block=nil,$ret_or_1=nil,e=nil;if(null==value&&(value=nil),$truthy(this["$realized?"]())&&this.$raise($$("ArgumentError"),"the promise has already been realized"),$eqeqeq($$("Promise"),value))return value["$<<"](this.prev)["$^"](this);try{block=$truthy($ret_or_1=this.action["$[]"]("success"))?$ret_or_1:this.action["$[]"]("always"),$truthy(block)&&(value=block.$call(value)),this["$resolve!"](value)}catch($err){if(!Opal.rescue($err,[$$("Exception")]))throw $err;e=$err;try{this["$exception!"](e)}finally{Opal.pop_exception()}}return this}),-1),$def(self,"$resolve!",(function(value){return this.realized="resolve",this.value=value,$truthy(this.next["$any?"]())?$send(this.next,"each",[],(function(p){return null==p&&(p=nil),p.$resolve(value)}),1):this.delayed=[value]}),1),$def(self,"$reject",(function(value){var block=nil,$ret_or_1=nil,e=nil;if(null==value&&(value=nil),$truthy(this["$realized?"]())&&this.$raise($$("ArgumentError"),"the promise has already been realized"),$eqeqeq($$("Promise"),value))return value["$<<"](this.prev)["$^"](this);try{block=$truthy($ret_or_1=this.action["$[]"]("failure"))?$ret_or_1:this.action["$[]"]("always"),$truthy(block)&&(value=block.$call(value)),$truthy(this.action["$key?"]("always"))?this["$resolve!"](value):this["$reject!"](value)}catch($err){if(!Opal.rescue($err,[$$("Exception")]))throw $err;e=$err;try{this["$exception!"](e)}finally{Opal.pop_exception()}}return this}),-1),$def(self,"$reject!",(function(value){return this.realized="reject",this.error=value,$truthy(this.next["$any?"]())?$send(this.next,"each",[],(function(p){return null==p&&(p=nil),p.$reject(value)}),1):this.delayed=[value]}),1),$def(self,"$exception!",(function(error){return this.exception=!0,this["$reject!"](error)}),1),$def(self,"$then",(function $$then(){var block=$$then.$$p||nil;return delete $$then.$$p,this["$^"]($$("Promise").$new($hash2(["success"],{success:block})))}),0),$def(self,"$then!",(function $Promise_then$excl$14(){var block=$Promise_then$excl$14.$$p||nil;return delete $Promise_then$excl$14.$$p,this["$there_can_be_only_one!"](),$send(this,"then",[],block.$to_proc())}),0),$def(self,"$fail",(function $$fail(){var block=$$fail.$$p||nil;return delete $$fail.$$p,this["$^"]($$("Promise").$new($hash2(["failure"],{failure:block})))}),0),$def(self,"$fail!",(function $Promise_fail$excl$15(){var block=$Promise_fail$excl$15.$$p||nil;return delete $Promise_fail$excl$15.$$p,this["$there_can_be_only_one!"](),$send(this,"fail",[],block.$to_proc())}),0),$def(self,"$always",(function $$always(){var block=$$always.$$p||nil;return delete $$always.$$p,this["$^"]($$("Promise").$new($hash2(["always"],{always:block})))}),0),$def(self,"$always!",(function $Promise_always$excl$16(){var block=$Promise_always$excl$16.$$p||nil;return delete $Promise_always$excl$16.$$p,this["$there_can_be_only_one!"](),$send(this,"always",[],block.$to_proc())}),0),$def(self,"$trace",(function $$trace(depth){var block=$$trace.$$p||nil;return delete $$trace.$$p,null==depth&&(depth=nil),this["$^"]($$("Trace").$new(depth,block))}),-1),$def(self,"$trace!",(function $Promise_trace$excl$17($a){var args,block=$Promise_trace$excl$17.$$p||nil,self=this;return delete $Promise_trace$excl$17.$$p,args=Opal.slice.call(arguments),self["$there_can_be_only_one!"](),$send(self,"trace",$to_a(args),block.$to_proc())}),-1),$def(self,"$there_can_be_only_one!",(function(){return $truthy(this.next["$any?"]())?this.$raise($$("ArgumentError"),"a promise has already been chained"):nil}),0),$def(self,"$inspect",(function(){var result=nil,$ret_or_1=nil;return result="#<"+this.$class()+"("+this.$object_id()+")",$truthy(this.next["$any?"]())&&(result=$rb_plus(result," >> "+this.next.$inspect())),result=$rb_plus(result,$truthy(this["$realized?"]())?": "+($truthy($ret_or_1=this.value)?$ret_or_1:this.error).$inspect()+">":">")}),0),$def(self,"$to_v2",(function(){var v2=nil;return v2=$$("PromiseV2").$new(),$send($send(this,"then",[],(function(i){return null==i&&(i=nil),v2.$resolve(i)}),1),"rescue",[],(function(i){return null==i&&(i=nil),v2.$reject(i)}),1),v2}),0),$alias(self,"catch","fail"),$alias(self,"catch!","fail!"),$alias(self,"do","then"),$alias(self,"do!","then!"),$alias(self,"ensure","always"),$alias(self,"ensure!","always!"),$alias(self,"finally","always"),$alias(self,"finally!","always!"),$alias(self,"rescue","fail"),$alias(self,"rescue!","fail!"),$alias(self,"to_n","to_v2"),$alias(self,"to_v1","itself"),function($base,$super,$parent_nesting){var self=$klass($base,$super,"Trace"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);$defs(self,"$it",(function(promise){var prev,current=nil;return current=[],($truthy(promise["$act?"]())||$truthy(promise.$prev()["$nil?"]()))&&current.$push(promise.$value()),prev=promise.$prev(),$truthy(prev)?current.$concat(this.$it(prev)):current}),1),$def(self,"$initialize",(function $$initialize(depth,block){return delete $$initialize.$$p,this.depth=depth,$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[$hash2(["success"],{success:$send(this,"proc",[],(function $$21(){var self=null==$$21.$$s?this:$$21.$$s,trace=nil;return(trace=$$("Trace").$it(self).$reverse()).$pop(),$truthy(depth)&&$truthy($rb_le(depth,trace.$length()))&&trace.$shift($rb_minus(trace.$length(),depth)),$send(block,"call",$to_a(trace))}),{$$arity:0,$$s:this})})],null)}),2)}($nesting[0],self,$nesting),function($base,$super,$parent_nesting){var self=$klass($base,$super,"When"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);self.$$prototype.wait=nil,$def(self,"$initialize",(function $$initialize(promises){return delete $$initialize.$$p,null==promises&&(promises=[]),$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[],null),this.wait=[],$send(promises,"each",[],(function $$22(promise){return null==promise&&(promise=nil),(null==$$22.$$s?this:$$22.$$s).$wait(promise)}),{$$arity:1,$$s:this})}),-1),$def(self,"$each",(function $$each(){var block=$$each.$$p||nil;return delete $$each.$$p,$truthy(block)||this.$raise($$("ArgumentError"),"no block given"),$send(this,"then",[],(function(values){return null==values&&(values=nil),$send(values,"each",[],block.$to_proc())}),1)}),0),$def(self,"$collect",(function $$collect(){var block=$$collect.$$p||nil;return delete $$collect.$$p,$truthy(block)||this.$raise($$("ArgumentError"),"no block given"),$send(this,"then",[],(function(values){return null==values&&(values=nil),$$("When").$new($send(values,"map",[],block.$to_proc()))}),1)}),0),$def(self,"$inject",(function $$inject($a){var $post_args,args,block=$$inject.$$p||nil,self=this;return delete $$inject.$$p,$post_args=Opal.slice.call(arguments),args=$post_args,$send(self,"then",[],(function(values){return null==values&&(values=nil),$send(values,"reduce",$to_a(args),block.$to_proc())}),1)}),-1),$def(self,"$wait",(function(promise){return $eqeqeq($$("Promise"),promise)||(promise=$$("Promise").$value(promise)),$truthy(promise["$act?"]())&&(promise=promise.$then()),this.wait["$<<"](promise),$send(promise,"always",[],(function $$26(){var self=null==$$26.$$s?this:$$26.$$s;return null==self.next&&(self.next=nil),$truthy(self.next["$any?"]())?self.$try():nil}),{$$arity:0,$$s:this}),this}),1),$def(self,"$>>",(function $When_$gt$gt$27($a){var $rest_arg,$yield=$When_$gt$gt$27.$$p||nil,self=this;return delete $When_$gt$gt$27.$$p,$rest_arg=Opal.slice.call(arguments),$send($send2(self,$find_super(self,">>",$When_$gt$gt$27,!1,!0),">>",$to_a($rest_arg),$yield),"tap",[],(function $$28(){return(null==$$28.$$s?this:$$28.$$s).$try()}),{$$arity:0,$$s:self})}),-1),$def(self,"$try",(function(){var promise=nil;return $truthy($send(this.wait,"all?",[],"realized?".$to_proc()))?(promise=$send(this.wait,"find",[],"rejected?".$to_proc()),$truthy(promise)?this.$reject(promise.$error()):this.$resolve($send(this.wait,"map",[],"value".$to_proc()))):nil}),0),$alias(self,"map","collect"),$alias(self,"reduce","inject"),$alias(self,"and","wait")}($nesting[0],self,$nesting)}($nesting[0],0,$nesting),$const_set($nesting[0],"PromiseV1",$$("Promise"))};
diff --git a/opal/master/promise.min.js.gz b/opal/master/promise.min.js.gz
index bc29fccd..13d64dc4 100644
Binary files a/opal/master/promise.min.js.gz and b/opal/master/promise.min.js.gz differ
diff --git a/opal/master/quickjs.js b/opal/master/quickjs.js
new file mode 100644
index 00000000..542c4ac0
--- /dev/null
+++ b/opal/master/quickjs.js
@@ -0,0 +1,42 @@
+Opal.modules["quickjs/io"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var nil = Opal.nil;
+
+  
+  Opal.gvars.stdout.write_proc = function(s) {
+    std.out.printf("%s", s);
+    std.out.flush();
+  }
+
+  Opal.gvars.stderr.write_proc = function(s) {
+    std.err.printf("%s", s);
+    std.err.flush();
+  }
+
+  Opal.gvars.stdin.read_proc = function(s) {
+    if (std.in.eof()) {
+      return nil;
+    }
+    else {
+      return std.in.readAsString(s);
+    }
+  }
+
+};
+
+Opal.modules["quickjs/kernel"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $const_set = Opal.const_set;
+
+  
+  $const_set($nesting[0], 'ARGV', scriptArgs);
+  return Opal.exit = std.exit;;
+};
+
+Opal.modules["quickjs"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, nil = Opal.nil;
+
+  Opal.add_stubs('require');
+  
+  /* global std, scriptArgs */;
+  self.$require("quickjs/io");
+  return self.$require("quickjs/kernel");
+};
diff --git a/opal/master/quickjs.min.js b/opal/master/quickjs.min.js
new file mode 100644
index 00000000..46c53587
--- /dev/null
+++ b/opal/master/quickjs.min.js
@@ -0,0 +1 @@
+Opal.modules["quickjs/io"]=function(Opal){var nil=Opal.nil;Opal.gvars.stdout.write_proc=function(s){std.out.printf("%s",s),std.out.flush()},Opal.gvars.stderr.write_proc=function(s){std.err.printf("%s",s),std.err.flush()},Opal.gvars.stdin.read_proc=function(s){return std.in.eof()?nil:std.in.readAsString(s)}},Opal.modules["quickjs/kernel"]=function(Opal){Opal.nil;return(0,Opal.const_set)([][0],"ARGV",scriptArgs),Opal.exit=std.exit},Opal.modules.quickjs=function(Opal){var self=Opal.top;Opal.nil;return Opal.add_stubs("require"),self.$require("quickjs/io"),self.$require("quickjs/kernel")};
diff --git a/opal/master/quickjs.min.js.gz b/opal/master/quickjs.min.js.gz
new file mode 100644
index 00000000..01d8ed11
Binary files /dev/null and b/opal/master/quickjs.min.js.gz differ
diff --git a/opal/master/rbconfig.js b/opal/master/rbconfig.js
index 5598019f..b557166c 100644
--- a/opal/master/rbconfig.js
+++ b/opal/master/rbconfig.js
@@ -1,17 +1,16 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["rbconfig"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $hash2 = Opal.hash2;
+Opal.modules["rbconfig"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $const_set = Opal.const_set, $hash2 = Opal.hash2;
 
-  Opal.add_stubs(['$split', '$[]']);
+  Opal.add_stubs('split,[]');
   
   (function($base, $parent_nesting) {
     var self = $module($base, 'RbConfig');
 
-    var $nesting = [self].concat($parent_nesting), versions = nil;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), versions = nil;
 
     
-    versions = $$($nesting, 'RUBY_VERSION').$split(".");
-    return Opal.const_set($nesting[0], 'CONFIG', $hash2(["ruby_version", "MAJOR", "MINOR", "TEENY", "RUBY", "RUBY_INSTALL_NAME", "RUBY_SO_NAME", "target_os", "host_os", "PATH_SEPARATOR"], {"ruby_version": $$($nesting, 'RUBY_VERSION'), "MAJOR": versions['$[]'](0), "MINOR": versions['$[]'](1), "TEENY": versions['$[]'](2), "RUBY": $$($nesting, 'RUBY_ENGINE'), "RUBY_INSTALL_NAME": $$($nesting, 'RUBY_ENGINE'), "RUBY_SO_NAME": $$($nesting, 'RUBY_ENGINE'), "target_os": "ECMA-262", "host_os": "ECMA-262", "PATH_SEPARATOR": ":"}));
+    versions = $$('RUBY_VERSION').$split(".");
+    return $const_set($nesting[0], 'CONFIG', $hash2(["ruby_version", "MAJOR", "MINOR", "TEENY", "RUBY", "RUBY_INSTALL_NAME", "RUBY_SO_NAME", "target_os", "host_os", "PATH_SEPARATOR"], {"ruby_version": $$('RUBY_VERSION'), "MAJOR": versions['$[]'](0), "MINOR": versions['$[]'](1), "TEENY": versions['$[]'](2), "RUBY": $$('RUBY_ENGINE'), "RUBY_INSTALL_NAME": $$('RUBY_ENGINE'), "RUBY_SO_NAME": $$('RUBY_ENGINE'), "target_os": "ECMA-262", "host_os": "ECMA-262", "PATH_SEPARATOR": ":"}));
   })($nesting[0], $nesting);
-  return Opal.const_set($nesting[0], 'RUBY_EXE', "bundle exec exe/opal");
+  return $const_set($nesting[0], 'RUBY_EXE', "bundle exec exe/opal");
 };
diff --git a/opal/master/rbconfig.min.js b/opal/master/rbconfig.min.js
index 6c171ec6..463453a3 100644
--- a/opal/master/rbconfig.min.js
+++ b/opal/master/rbconfig.min.js
@@ -1 +1 @@
-Opal.modules.rbconfig=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$hash2=Opal.hash2;return Opal.add_stubs(["$split","$[]"]),function($nesting,versions){$nesting=[$module($nesting,"RbConfig")].concat(versions),versions=nil,versions=$$($nesting,"RUBY_VERSION").$split("."),Opal.const_set($nesting[0],"CONFIG",$hash2(["ruby_version","MAJOR","MINOR","TEENY","RUBY","RUBY_INSTALL_NAME","RUBY_SO_NAME","target_os","host_os","PATH_SEPARATOR"],{ruby_version:$$($nesting,"RUBY_VERSION"),MAJOR:versions["$[]"](0),MINOR:versions["$[]"](1),TEENY:versions["$[]"](2),RUBY:$$($nesting,"RUBY_ENGINE"),RUBY_INSTALL_NAME:$$($nesting,"RUBY_ENGINE"),RUBY_SO_NAME:$$($nesting,"RUBY_ENGINE"),target_os:"ECMA-262",host_os:"ECMA-262",PATH_SEPARATOR:":"}))}($nesting[0],$nesting),Opal.const_set($nesting[0],"RUBY_EXE","bundle exec exe/opal")};
+Opal.modules.rbconfig=function(Opal){var $nesting=[],nil=Opal.nil,$module=Opal.module,$const_set=Opal.const_set,$hash2=Opal.hash2;return Opal.add_stubs("split,[]"),function($base,$parent_nesting){var $nesting=[$module($base,"RbConfig")].concat($parent_nesting),$$=Opal.$r($nesting),versions=nil;versions=$$("RUBY_VERSION").$split("."),$const_set($nesting[0],"CONFIG",$hash2(["ruby_version","MAJOR","MINOR","TEENY","RUBY","RUBY_INSTALL_NAME","RUBY_SO_NAME","target_os","host_os","PATH_SEPARATOR"],{ruby_version:$$("RUBY_VERSION"),MAJOR:versions["$[]"](0),MINOR:versions["$[]"](1),TEENY:versions["$[]"](2),RUBY:$$("RUBY_ENGINE"),RUBY_INSTALL_NAME:$$("RUBY_ENGINE"),RUBY_SO_NAME:$$("RUBY_ENGINE"),target_os:"ECMA-262",host_os:"ECMA-262",PATH_SEPARATOR:":"}))}($nesting[0],$nesting),$const_set($nesting[0],"RUBY_EXE","bundle exec exe/opal")};
diff --git a/opal/master/rbconfig.min.js.gz b/opal/master/rbconfig.min.js.gz
index 1dd24ec0..5735aa64 100644
Binary files a/opal/master/rbconfig.min.js.gz and b/opal/master/rbconfig.min.js.gz differ
diff --git a/opal/master/securerandom.js b/opal/master/securerandom.js
index e99ffd2e..7a19660f 100644
--- a/opal/master/securerandom.js
+++ b/opal/master/securerandom.js
@@ -1,15 +1,198 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["securerandom"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module;
+Opal.modules["corelib/random/formatter"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $module = Opal.module, $def = Opal.def, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $range = Opal.range, $rb_divide = Opal.rb_divide, $Kernel = Opal.Kernel, $Opal = Opal.Opal;
 
-  Opal.add_stubs(['$extend', '$warn', '$rand', '$gen_random', '$_verify_count', '$encode']);
+  Opal.add_stubs('_verify_count,bytes,encode,strict_encode64,random_bytes,urlsafe_encode64,split,hex,[]=,-,[],map,to_proc,join,times,<<,|,ord,/,abs,random_float,raise,coerce_to!,flatten,new,random_number,length,include,extend');
+  return (function($base, $super, $parent_nesting) {
+    var self = $klass($base, $super, 'Random');
+
+    var $nesting = [self].concat($parent_nesting);
+
+    
+    (function($base, $parent_nesting) {
+      var self = $module($base, 'Formatter');
+
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+      
+      
+      $def(self, '$hex', function $$hex(count) {
+        var self = this;
+
+        
+        
+        if (count == null) count = nil;;
+        count = $$$('Random').$_verify_count(count);
+        
+        var bytes = self.$bytes(count);
+        var out = "";
+        for (var i = 0; i < count; i++) {
+          out += bytes.charCodeAt(i).toString(16).padStart(2, '0');
+        }
+        return (out).$encode("US-ASCII");
+      ;
+      }, -1);
+      
+      $def(self, '$random_bytes', function $$random_bytes(count) {
+        var self = this;
+
+        
+        
+        if (count == null) count = nil;;
+        return self.$bytes(count);
+      }, -1);
+      
+      $def(self, '$base64', function $$base64(count) {
+        var self = this;
+
+        
+        
+        if (count == null) count = nil;;
+        return $$$('Base64').$strict_encode64(self.$random_bytes(count)).$encode("US-ASCII");
+      }, -1);
+      
+      $def(self, '$urlsafe_base64', function $$urlsafe_base64(count, padding) {
+        var self = this;
+
+        
+        
+        if (count == null) count = nil;;
+        
+        if (padding == null) padding = false;;
+        return $$$('Base64').$urlsafe_encode64(self.$random_bytes(count), padding).$encode("US-ASCII");
+      }, -1);
+      
+      $def(self, '$uuid', function $$uuid() {
+        var self = this, str = nil, $writer = nil;
+
+        
+        str = self.$hex(16).$split("");
+        
+        $writer = [12, "4"];
+        $send(str, '[]=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
+        
+        $writer = [16, (parseInt(str['$[]'](16), 16) & 3 | 8).toString(16)];
+        $send(str, '[]=', $to_a($writer));
+        $writer[$rb_minus($writer["length"], 1)];;
+        str = [str['$[]']($range(0, 8, true)), str['$[]']($range(8, 12, true)), str['$[]']($range(12, 16, true)), str['$[]']($range(16, 20, true)), str['$[]']($range(20, 32, true))];
+        str = $send(str, 'map', [], "join".$to_proc());
+        return str.$join("-");
+      }, 0);
+      
+      $def(self, '$random_float', function $$random_float() {
+        var self = this, bs = nil, num = nil;
+
+        
+        bs = self.$bytes(4);
+        num = 0;
+        $send((4), 'times', [], function $$1(i){
+          
+          
+          if (i == null) i = nil;;
+          num = num['$<<'](8);
+          return (num = num['$|'](bs['$[]'](i).$ord()));}, 1);
+        return $rb_divide(num.$abs(), 2147483647);
+      }, 0);
+      
+      $def(self, '$random_number', function $$random_number(limit) {
+        var self = this;
+
+        
+        ;
+        
+        function randomFloat() {
+          return self.$random_float();
+        }
+
+        function randomInt(max) {
+          return Math.floor(randomFloat() * max);
+        }
+
+        function randomRange() {
+          var min = limit.begin,
+              max = limit.end;
+
+          if (min === nil || max === nil) {
+            return nil;
+          }
+
+          var length = max - min;
+
+          if (length < 0) {
+            return nil;
+          }
+
+          if (length === 0) {
+            return min;
+          }
+
+          if (max % 1 === 0 && min % 1 === 0 && !limit.excl) {
+            length++;
+          }
+
+          return randomInt(length) + min;
+        }
+
+        if (limit == null) {
+          return randomFloat();
+        } else if (limit.$$is_range) {
+          return randomRange();
+        } else if (limit.$$is_number) {
+          if (limit <= 0) {
+            $Kernel.$raise($$$('ArgumentError'), "invalid argument - " + (limit))
+          }
+
+          if (limit % 1 === 0) {
+            // integer
+            return randomInt(limit);
+          } else {
+            return randomFloat() * limit;
+          }
+        } else {
+          limit = $Opal['$coerce_to!'](limit, $$$('Integer'), "to_int");
+
+          if (limit <= 0) {
+            $Kernel.$raise($$$('ArgumentError'), "invalid argument - " + (limit))
+          }
+
+          return randomInt(limit);
+        }
+      ;
+      }, -1);
+      return $def(self, '$alphanumeric', function $$alphanumeric(count) {
+        var self = this, map = nil;
+
+        
+        
+        if (count == null) count = nil;;
+        count = $$('Random').$_verify_count(count);
+        map = $send([$range("0", "9", false), $range("a", "z", false), $range("A", "Z", false)], 'map', [], "to_a".$to_proc()).$flatten();
+        return $send($$$('Array'), 'new', [count], function $$2(i){var self = $$2.$$s == null ? this : $$2.$$s;
+
+          
+          
+          if (i == null) i = nil;;
+          return map['$[]'](self.$random_number(map.$length()));}, {$$arity: 1, $$s: self}).$join();
+      }, -1);
+    })(self, $nesting);
+    self.$include($$$($$$('Random'), 'Formatter'));
+    return self.$extend($$$($$$('Random'), 'Formatter'));
+  })('::', null, $nesting)
+};
+
+Opal.modules["securerandom"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $module = Opal.module, $defs = Opal.defs;
+
+  Opal.add_stubs('require,extend,warn,rand,gen_random,_verify_count,encode');
+  
+  self.$require("corelib/random/formatter");
   return (function($base, $parent_nesting) {
     var self = $module($base, 'SecureRandom');
 
-    var $nesting = [self].concat($parent_nesting), $SecureRandom_bytes$1, $SecureRandom_gen_random$2;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
-    self.$extend($$$($$($nesting, 'Random'), 'Formatter'));
+    self.$extend($$$($$('Random'), 'Formatter'));
     
     var gen_random_bytes;
 
@@ -40,7 +223,7 @@ Opal.modules["securerandom"] = function(Opal) {
       // It's possible to interface other libraries by adding an else if above if
       // that's really desired.
 
-      self.$warn("" + "Can't get a Crypto.getRandomValues interface or Crypto.randomBytes." + "The random values generated with SecureRandom won't be " + "cryptographically secure")
+      self.$warn("Can't get a Crypto.getRandomValues interface or Crypto.randomBytes." + "The random values generated with SecureRandom won't be " + "cryptographically secure")
 
       gen_random_bytes = function(count) {
         var storage = new Uint8Array(count);
@@ -52,25 +235,21 @@ Opal.modules["securerandom"] = function(Opal) {
       }
     }
   ;
-    Opal.defs(self, '$bytes', $SecureRandom_bytes$1 = function $$bytes(bytes) {
+    $defs(self, '$bytes', function $$bytes(bytes) {
       var self = this;
 
       
       
-      if (bytes == null) {
-        bytes = nil;
-      };
+      if (bytes == null) bytes = nil;;
       return self.$gen_random(bytes);
-    }, $SecureRandom_bytes$1.$$arity = -1);
-    return (Opal.defs(self, '$gen_random', $SecureRandom_gen_random$2 = function $$gen_random(count) {
-      var self = this, out = nil;
+    }, -1);
+    return $defs(self, '$gen_random', function $$gen_random(count) {
+      var out = nil;
 
       
       
-      if (count == null) {
-        count = nil;
-      };
-      count = $$($nesting, 'Random').$_verify_count(count);
+      if (count == null) count = nil;;
+      count = $$('Random').$_verify_count(count);
       out = "";
       
       var bytes = gen_random_bytes(count);
@@ -79,6 +258,6 @@ Opal.modules["securerandom"] = function(Opal) {
       }
     ;
       return out.$encode("ASCII-8BIT");
-    }, $SecureRandom_gen_random$2.$$arity = -1), nil) && 'gen_random';
-  })($nesting[0], $nesting)
+    }, -1);
+  })($nesting[0], $nesting);
 };
diff --git a/opal/master/securerandom.min.js b/opal/master/securerandom.min.js
index bdd16f01..aea53837 100644
--- a/opal/master/securerandom.min.js
+++ b/opal/master/securerandom.min.js
@@ -1 +1 @@
-Opal.modules.securerandom=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$module=Opal.module;return Opal.add_stubs(["$extend","$warn","$rand","$gen_random","$_verify_count","$encode"]),function($base,$SecureRandom_gen_random$2){var crypto,gen_random_bytes,self=$module($base,"SecureRandom"),$nesting=[self].concat($SecureRandom_gen_random$2);return self.$extend($$$($$($nesting,"Random"),"Formatter")),gen_random_bytes=Opal.global.crypto&&Opal.global.crypto.getRandomValues||Opal.global.msCrypto&&Opal.global.msCrypto.getRandomValues?(crypto=Opal.global.crypto||Opal.global.msCrypto,function(storage){storage=new Uint8Array(storage);return crypto.getRandomValues(storage),storage}):Opal.global.crypto&&Opal.global.crypto.randomBytes?function(count){return Opal.global.crypto.randomBytes(count)}:(self.$warn("Can't get a Crypto.getRandomValues interface or Crypto.randomBytes.The random values generated with SecureRandom won't be cryptographically secure"),function(count){for(var storage=new Uint8Array(count),i=0;i<count;i++)storage[i]=self.$rand(255)^Math.floor(256*Math.random()),storage[i]^=+new Date>>self.$rand(255)&255;return storage}),Opal.defs(self,"$bytes",$SecureRandom_gen_random$2=function(bytes){return null==bytes&&(bytes=nil),this.$gen_random(bytes)},$SecureRandom_gen_random$2.$$arity=-1),Opal.defs(self,"$gen_random",$SecureRandom_gen_random$2=function(count){var out=nil;null==count&&(count=nil),count=$$($nesting,"Random").$_verify_count(count),out="";for(var bytes=gen_random_bytes(count),i=0;i<count;i++)out+=String.fromCharCode(bytes[i]);return out.$encode("ASCII-8BIT")},$SecureRandom_gen_random$2.$$arity=-1),nil&&"gen_random"}($nesting[0],$nesting)};
+Opal.modules["corelib/random/formatter"]=function(Opal){var nil=Opal.nil,$$$=Opal.$$$,$klass=Opal.klass,$module=Opal.module,$def=Opal.def,$send=Opal.send,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$range=Opal.range,$rb_divide=Opal.rb_divide,$Kernel=Opal.Kernel,$Opal=Opal.Opal;return Opal.add_stubs("_verify_count,bytes,encode,strict_encode64,random_bytes,urlsafe_encode64,split,hex,[]=,-,[],map,to_proc,join,times,<<,|,ord,/,abs,random_float,raise,coerce_to!,flatten,new,random_number,length,include,extend"),function($base,$super,$parent_nesting){var self=$klass("::",null,"Random"),$nesting=[self].concat($parent_nesting);return function($base,$parent_nesting){var self=$module($base,"Formatter"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);$def(self,"$hex",(function(count){null==count&&(count=nil),count=$$$("Random").$_verify_count(count);for(var bytes=this.$bytes(count),out="",i=0;i<count;i++)out+=bytes.charCodeAt(i).toString(16).padStart(2,"0");return out.$encode("US-ASCII")}),-1),$def(self,"$random_bytes",(function(count){return null==count&&(count=nil),this.$bytes(count)}),-1),$def(self,"$base64",(function(count){return null==count&&(count=nil),$$$("Base64").$strict_encode64(this.$random_bytes(count)).$encode("US-ASCII")}),-1),$def(self,"$urlsafe_base64",(function(count,padding){return null==count&&(count=nil),null==padding&&(padding=!1),$$$("Base64").$urlsafe_encode64(this.$random_bytes(count),padding).$encode("US-ASCII")}),-1),$def(self,"$uuid",(function(){var str=nil,$writer=nil;return str=this.$hex(16).$split(""),$send(str,"[]=",$to_a($writer=[12,"4"])),$writer[$rb_minus($writer.length,1)],$writer=[16,(3&parseInt(str["$[]"](16),16)|8).toString(16)],$send(str,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)],str=[str["$[]"]($range(0,8,!0)),str["$[]"]($range(8,12,!0)),str["$[]"]($range(12,16,!0)),str["$[]"]($range(16,20,!0)),str["$[]"]($range(20,32,!0))],(str=$send(str,"map",[],"join".$to_proc())).$join("-")}),0),$def(self,"$random_float",(function(){var bs=nil,num=nil;return bs=this.$bytes(4),num=0,$send(4,"times",[],(function(i){return null==i&&(i=nil),num=(num=num["$<<"](8))["$|"](bs["$[]"](i).$ord())}),1),$rb_divide(num.$abs(),2147483647)}),0),$def(self,"$random_number",(function(limit){var self=this;function randomFloat(){return self.$random_float()}function randomInt(max){return Math.floor(randomFloat()*max)}return null==limit?randomFloat():limit.$$is_range?function(){var min=limit.begin,max=limit.end;if(min===nil||max===nil)return nil;var length=max-min;return length<0?nil:0===length?min:(max%1!=0||min%1!=0||limit.excl||length++,randomInt(length)+min)}():limit.$$is_number?(limit<=0&&$Kernel.$raise($$$("ArgumentError"),"invalid argument - "+limit),limit%1==0?randomInt(limit):randomFloat()*limit):((limit=$Opal["$coerce_to!"](limit,$$$("Integer"),"to_int"))<=0&&$Kernel.$raise($$$("ArgumentError"),"invalid argument - "+limit),randomInt(limit))}),-1),$def(self,"$alphanumeric",(function(count){var map=nil;return null==count&&(count=nil),count=$$("Random").$_verify_count(count),map=$send([$range("0","9",!1),$range("a","z",!1),$range("A","Z",!1)],"map",[],"to_a".$to_proc()).$flatten(),$send($$$("Array"),"new",[count],(function $$2(i){var self=null==$$2.$$s?this:$$2.$$s;return null==i&&(i=nil),map["$[]"](self.$random_number(map.$length()))}),{$$arity:1,$$s:this}).$join()}),-1)}(self,$nesting),self.$include($$$($$$("Random"),"Formatter")),self.$extend($$$($$$("Random"),"Formatter"))}(0,0,[])},Opal.modules.securerandom=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$module=Opal.module,$defs=Opal.defs;return Opal.add_stubs("require,extend,warn,rand,gen_random,_verify_count,encode"),self.$require("corelib/random/formatter"),function($base,$parent_nesting){var gen_random_bytes,self=$module($base,"SecureRandom"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);if(self.$extend($$$($$("Random"),"Formatter")),Opal.global.crypto&&Opal.global.crypto.getRandomValues||Opal.global.msCrypto&&Opal.global.msCrypto.getRandomValues){var crypto=Opal.global.crypto||Opal.global.msCrypto;gen_random_bytes=function(count){var storage=new Uint8Array(count);return crypto.getRandomValues(storage),storage}}else Opal.global.crypto&&Opal.global.crypto.randomBytes?gen_random_bytes=function(count){return Opal.global.crypto.randomBytes(count)}:(self.$warn("Can't get a Crypto.getRandomValues interface or Crypto.randomBytes.The random values generated with SecureRandom won't be cryptographically secure"),gen_random_bytes=function(count){for(var storage=new Uint8Array(count),i=0;i<count;i++)storage[i]=self.$rand(255)^Math.floor(256*Math.random()),storage[i]^=+new Date>>self.$rand(255)&255;return storage});return $defs(self,"$bytes",(function(bytes){return null==bytes&&(bytes=nil),this.$gen_random(bytes)}),-1),$defs(self,"$gen_random",(function(count){var out=nil;null==count&&(count=nil),count=$$("Random").$_verify_count(count),out="";for(var bytes=gen_random_bytes(count),i=0;i<count;i++)out+=String.fromCharCode(bytes[i]);return out.$encode("ASCII-8BIT")}),-1)}($nesting[0],$nesting)};
diff --git a/opal/master/securerandom.min.js.gz b/opal/master/securerandom.min.js.gz
index 50052a60..57244b3a 100644
Binary files a/opal/master/securerandom.min.js.gz and b/opal/master/securerandom.min.js.gz differ
diff --git a/opal/master/set.js b/opal/master/set.js
index 76a38808..fd0bae69 100644
--- a/opal/master/set.js
+++ b/opal/master/set.js
@@ -1,202 +1,163 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["set"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  function $rb_lt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs < rhs : lhs['$<'](rhs);
-  }
-  function $rb_le(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs <= rhs : lhs['$<='](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $hash2 = Opal.hash2, $truthy = Opal.truthy, $send = Opal.send, $alias = Opal.alias, $module = Opal.module;
-
-  Opal.add_stubs(['$include', '$new', '$nil?', '$===', '$raise', '$each', '$add', '$merge', '$class', '$respond_to?', '$subtract', '$dup', '$join', '$to_a', '$equal?', '$instance_of?', '$==', '$instance_variable_get', '$is_a?', '$size', '$all?', '$include?', '$[]=', '$-', '$enum_for', '$[]', '$<<', '$replace', '$delete', '$select', '$reject', '$delete_if', '$to_proc', '$keep_if', '$each_key', '$empty?', '$eql?', '$instance_eval', '$clear', '$<', '$<=', '$any?', '$!', '$intersect?', '$keys']);
+Opal.modules["set"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $defs = Opal.defs, $hash2 = Opal.hash2, $truthy = Opal.truthy, $eqeqeq = Opal.eqeqeq, $Kernel = Opal.Kernel, $send = Opal.send, $def = Opal.def, $eqeq = Opal.eqeq, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $rb_lt = Opal.rb_lt, $rb_le = Opal.rb_le, $alias = Opal.alias, $module = Opal.module;
+
+  Opal.add_stubs('include,new,nil?,===,raise,each,add,merge,class,respond_to?,subtract,dup,join,to_a,equal?,instance_of?,==,instance_variable_get,size,is_a?,all?,include?,[]=,-,enum_for,[],<<,replace,delete,select,reject,delete_if,to_proc,keep_if,each_key,empty?,eql?,instance_eval,clear,<,<=,any?,!,intersect?,keys');
   
-  (function($base, $super, $parent_nesting) {
+  (function($base, $super) {
     var self = $klass($base, $super, 'Set');
 
-    var $nesting = [self].concat($parent_nesting), $Set_$$$1, $Set_initialize$2, $Set_dup$4, $Set_$minus$5, $Set_inspect$6, $Set_$eq_eq$7, $Set_add$9, $Set_classify$10, $Set_collect$excl$13, $Set_delete$15, $Set_delete$ques$16, $Set_delete_if$17, $Set_keep_if$20, $Set_reject$excl$23, $Set_select$excl$24, $Set_add$ques$25, $Set_each$26, $Set_empty$ques$27, $Set_eql$ques$28, $Set_clear$30, $Set_include$ques$31, $Set_merge$32, $Set_replace$34, $Set_size$35, $Set_subtract$36, $Set_$$38, $Set_superset$ques$39, $Set_proper_superset$ques$41, $Set_subset$ques$43, $Set_proper_subset$ques$45, $Set_intersect$ques$47, $Set_disjoint$ques$50, $Set_to_a$51;
+    var $ret_or_1 = nil, $proto = self.$$prototype;
 
-    self.$$prototype.hash = nil;
+    $proto.hash = nil;
     
-    self.$include($$($nesting, 'Enumerable'));
-    Opal.defs(self, '$[]', $Set_$$$1 = function($a) {
+    self.$include($$$('Enumerable'));
+    $defs(self, '$[]', function $Set_$$$1($a) {
       var $post_args, ary, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       ary = $post_args;;
       return self.$new(ary);
-    }, $Set_$$$1.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$initialize', $Set_initialize$2 = function $$initialize(enum$) {
-      var $iter = $Set_initialize$2.$$p, block = $iter || nil, $$3, self = this;
+    $def(self, '$initialize', function $$initialize(enum$) {
+      var block = $$initialize.$$p || nil, self = this;
 
-      if ($iter) $Set_initialize$2.$$p = null;
-      
+      delete $$initialize.$$p;
       
-      if ($iter) $Set_initialize$2.$$p = null;;
+      ;
       
-      if (enum$ == null) {
-        enum$ = nil;
-      };
+      if (enum$ == null) enum$ = nil;;
       self.hash = $hash2([], {});
       if ($truthy(enum$['$nil?']())) {
-        return nil};
-      if ($truthy($$($nesting, 'Enumerable')['$==='](enum$))) {
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "value must be enumerable")
+        return nil
+      };
+      if (!$eqeqeq($$$('Enumerable'), enum$)) {
+        $Kernel.$raise($$$('ArgumentError'), "value must be enumerable")
       };
       if ($truthy(block)) {
-        return $send(enum$, 'each', [], ($$3 = function(item){var self = $$3.$$s == null ? this : $$3.$$s;
+        return $send(enum$, 'each', [], function $$2(item){var self = $$2.$$s == null ? this : $$2.$$s;
 
           
           
-          if (item == null) {
-            item = nil;
-          };
-          return self.$add(Opal.yield1(block, item));}, $$3.$$s = self, $$3.$$arity = 1, $$3))
+          if (item == null) item = nil;;
+          return self.$add(Opal.yield1(block, item));}, {$$arity: 1, $$s: self})
       } else {
         return self.$merge(enum$)
       };
-    }, $Set_initialize$2.$$arity = -1);
+    }, -1);
     
-    Opal.def(self, '$dup', $Set_dup$4 = function $$dup() {
+    $def(self, '$dup', function $$dup() {
       var self = this, result = nil;
 
       
       result = self.$class().$new();
       return result.$merge(self);
-    }, $Set_dup$4.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$-', $Set_$minus$5 = function(enum$) {
+    $def(self, '$-', function $Set_$minus$3(enum$) {
       var self = this;
 
       
-      if ($truthy(enum$['$respond_to?']("each"))) {
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "value must be enumerable")
+      if (!$truthy(enum$['$respond_to?']("each"))) {
+        $Kernel.$raise($$$('ArgumentError'), "value must be enumerable")
       };
       return self.$dup().$subtract(enum$);
-    }, $Set_$minus$5.$$arity = 1);
-    $alias(self, "difference", "-");
+    }, 1);
     
-    Opal.def(self, '$inspect', $Set_inspect$6 = function $$inspect() {
+    $def(self, '$inspect', function $$inspect() {
       var self = this;
 
-      return "" + "#<Set: {" + (self.$to_a().$join(",")) + "}>"
-    }, $Set_inspect$6.$$arity = 0);
+      return "#<Set: {" + (self.$to_a().$join(",")) + "}>"
+    }, 0);
     
-    Opal.def(self, '$==', $Set_$eq_eq$7 = function(other) {
-      var $$8, self = this, $ret_or_1 = nil;
+    $def(self, '$==', function $Set_$eq_eq$4(other) {
+      var self = this;
 
       if ($truthy(self['$equal?'](other))) {
         return true
       } else if ($truthy(other['$instance_of?'](self.$class()))) {
         return self.hash['$=='](other.$instance_variable_get("@hash"))
-      } else if ($truthy((function() {if ($truthy(($ret_or_1 = other['$is_a?']($$($nesting, 'Set'))))) {
-        return self.$size()['$=='](other.$size())
-      } else {
-        return $ret_or_1
-      }; return nil; })())) {
-        return $send(other, 'all?', [], ($$8 = function(o){var self = $$8.$$s == null ? this : $$8.$$s;
+      } else if (($truthy(other['$is_a?']($$$('Set'))) && ($eqeq(self.$size(), other.$size())))) {
+        return $send(other, 'all?', [], function $$5(o){var self = $$5.$$s == null ? this : $$5.$$s;
           if (self.hash == null) self.hash = nil;
 
           
           
-          if (o == null) {
-            o = nil;
-          };
-          return self.hash['$include?'](o);}, $$8.$$s = self, $$8.$$arity = 1, $$8))
+          if (o == null) o = nil;;
+          return self.hash['$include?'](o);}, {$$arity: 1, $$s: self})
       } else {
         return false
       }
-    }, $Set_$eq_eq$7.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$add', $Set_add$9 = function $$add(o) {
+    $def(self, '$add', function $$add(o) {
       var self = this, $writer = nil;
 
       
       
       $writer = [o, true];
-      $send(self.hash, '[]=', Opal.to_a($writer));
+      $send(self.hash, '[]=', $to_a($writer));
       $writer[$rb_minus($writer["length"], 1)];;
       return self;
-    }, $Set_add$9.$$arity = 1);
-    $alias(self, "<<", "add");
+    }, 1);
     
-    Opal.def(self, '$classify', $Set_classify$10 = function $$classify() {
-      var $iter = $Set_classify$10.$$p, block = $iter || nil, $$11, $$12, self = this, result = nil;
+    $def(self, '$classify', function $$classify() {
+      var block = $$classify.$$p || nil, self = this, result = nil;
 
-      if ($iter) $Set_classify$10.$$p = null;
+      delete $$classify.$$p;
       
-      
-      if ($iter) $Set_classify$10.$$p = null;;
-      if ((block !== nil)) {
-      } else {
+      ;
+      if (!(block !== nil)) {
         return self.$enum_for("classify")
       };
-      result = $send($$($nesting, 'Hash'), 'new', [], ($$11 = function(h, k){var self = $$11.$$s == null ? this : $$11.$$s, $writer = nil;
+      result = $send($$$('Hash'), 'new', [], function $$6(h, k){var self = $$6.$$s == null ? this : $$6.$$s, $writer = nil;
 
         
         
-        if (h == null) {
-          h = nil;
-        };
+        if (h == null) h = nil;;
         
-        if (k == null) {
-          k = nil;
-        };
+        if (k == null) k = nil;;
         $writer = [k, self.$class().$new()];
-        $send(h, '[]=', Opal.to_a($writer));
-        return $writer[$rb_minus($writer["length"], 1)];}, $$11.$$s = self, $$11.$$arity = 2, $$11));
-      $send(self, 'each', [], ($$12 = function(item){var self = $$12.$$s == null ? this : $$12.$$s;
-
+        $send(h, '[]=', $to_a($writer));
+        return $writer[$rb_minus($writer["length"], 1)];}, {$$arity: 2, $$s: self});
+      $send(self, 'each', [], function $$7(item){
         
         
-        if (item == null) {
-          item = nil;
-        };
-        return result['$[]'](Opal.yield1(block, item)).$add(item);}, $$12.$$s = self, $$12.$$arity = 1, $$12));
+        if (item == null) item = nil;;
+        return result['$[]'](Opal.yield1(block, item)).$add(item);}, 1);
       return result;
-    }, $Set_classify$10.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$collect!', $Set_collect$excl$13 = function() {
-      var $iter = $Set_collect$excl$13.$$p, block = $iter || nil, $$14, self = this, result = nil;
+    $def(self, '$collect!', function $Set_collect$excl$8() {
+      var block = $Set_collect$excl$8.$$p || nil, self = this, result = nil;
 
-      if ($iter) $Set_collect$excl$13.$$p = null;
+      delete $Set_collect$excl$8.$$p;
       
-      
-      if ($iter) $Set_collect$excl$13.$$p = null;;
-      if ((block !== nil)) {
-      } else {
+      ;
+      if (!(block !== nil)) {
         return self.$enum_for("collect!")
       };
       result = self.$class().$new();
-      $send(self, 'each', [], ($$14 = function(item){var self = $$14.$$s == null ? this : $$14.$$s;
-
+      $send(self, 'each', [], function $$9(item){
         
         
-        if (item == null) {
-          item = nil;
-        };
-        return result['$<<'](Opal.yield1(block, item));}, $$14.$$s = self, $$14.$$arity = 1, $$14));
+        if (item == null) item = nil;;
+        return result['$<<'](Opal.yield1(block, item));}, 1);
       return self.$replace(result);
-    }, $Set_collect$excl$13.$$arity = 0);
-    $alias(self, "map!", "collect!");
+    }, 0);
     
-    Opal.def(self, '$delete', $Set_delete$15 = function(o) {
+    $def(self, '$delete', function $Set_delete$10(o) {
       var self = this;
 
       
       self.hash.$delete(o);
       return self;
-    }, $Set_delete$15.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$delete?', $Set_delete$ques$16 = function(o) {
+    $def(self, '$delete?', function $Set_delete$ques$11(o) {
       var self = this;
 
       if ($truthy(self['$include?'](o))) {
@@ -206,106 +167,89 @@ Opal.modules["set"] = function(Opal) {
       } else {
         return nil
       }
-    }, $Set_delete$ques$16.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$delete_if', $Set_delete_if$17 = function $$delete_if() {
-      var $$18, $$19, $iter = $Set_delete_if$17.$$p, $yield = $iter || nil, self = this;
+    $def(self, '$delete_if', function $$delete_if() {
+      var $yield = $$delete_if.$$p || nil, self = this;
 
-      if ($iter) $Set_delete_if$17.$$p = null;
+      delete $$delete_if.$$p;
       
-      if (($yield !== nil)) {
-      } else {
+      if (!($yield !== nil)) {
         return self.$enum_for("delete_if")
       };
-      $send($send(self, 'select', [], ($$18 = function(o){var self = $$18.$$s == null ? this : $$18.$$s;
-
+      $send($send(self, 'select', [], function $$12(o){
         
         
-        if (o == null) {
-          o = nil;
-        };
-        return Opal.yield1($yield, o);;}, $$18.$$s = self, $$18.$$arity = 1, $$18)), 'each', [], ($$19 = function(o){var self = $$19.$$s == null ? this : $$19.$$s;
+        if (o == null) o = nil;;
+        return Opal.yield1($yield, o);;}, 1), 'each', [], function $$13(o){var self = $$13.$$s == null ? this : $$13.$$s;
         if (self.hash == null) self.hash = nil;
 
         
         
-        if (o == null) {
-          o = nil;
-        };
-        return self.hash.$delete(o);}, $$19.$$s = self, $$19.$$arity = 1, $$19));
+        if (o == null) o = nil;;
+        return self.hash.$delete(o);}, {$$arity: 1, $$s: self});
       return self;
-    }, $Set_delete_if$17.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$keep_if', $Set_keep_if$20 = function $$keep_if() {
-      var $$21, $$22, $iter = $Set_keep_if$20.$$p, $yield = $iter || nil, self = this;
+    $def(self, '$keep_if', function $$keep_if() {
+      var $yield = $$keep_if.$$p || nil, self = this;
 
-      if ($iter) $Set_keep_if$20.$$p = null;
+      delete $$keep_if.$$p;
       
-      if (($yield !== nil)) {
-      } else {
+      if (!($yield !== nil)) {
         return self.$enum_for("keep_if")
       };
-      $send($send(self, 'reject', [], ($$21 = function(o){var self = $$21.$$s == null ? this : $$21.$$s;
-
+      $send($send(self, 'reject', [], function $$14(o){
         
         
-        if (o == null) {
-          o = nil;
-        };
-        return Opal.yield1($yield, o);;}, $$21.$$s = self, $$21.$$arity = 1, $$21)), 'each', [], ($$22 = function(o){var self = $$22.$$s == null ? this : $$22.$$s;
+        if (o == null) o = nil;;
+        return Opal.yield1($yield, o);;}, 1), 'each', [], function $$15(o){var self = $$15.$$s == null ? this : $$15.$$s;
         if (self.hash == null) self.hash = nil;
 
         
         
-        if (o == null) {
-          o = nil;
-        };
-        return self.hash.$delete(o);}, $$22.$$s = self, $$22.$$arity = 1, $$22));
+        if (o == null) o = nil;;
+        return self.hash.$delete(o);}, {$$arity: 1, $$s: self});
       return self;
-    }, $Set_keep_if$20.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$reject!', $Set_reject$excl$23 = function() {
-      var $iter = $Set_reject$excl$23.$$p, block = $iter || nil, self = this, before = nil;
+    $def(self, '$reject!', function $Set_reject$excl$16() {
+      var block = $Set_reject$excl$16.$$p || nil, self = this, before = nil;
 
-      if ($iter) $Set_reject$excl$23.$$p = null;
-      
+      delete $Set_reject$excl$16.$$p;
       
-      if ($iter) $Set_reject$excl$23.$$p = null;;
-      if ((block !== nil)) {
-      } else {
+      ;
+      if (!(block !== nil)) {
         return self.$enum_for("reject!")
       };
       before = self.$size();
       $send(self, 'delete_if', [], block.$to_proc());
-      if (self.$size()['$=='](before)) {
+      if ($eqeq(self.$size(), before)) {
         return nil
       } else {
         return self
       };
-    }, $Set_reject$excl$23.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$select!', $Set_select$excl$24 = function() {
-      var $iter = $Set_select$excl$24.$$p, block = $iter || nil, self = this, before = nil;
+    $def(self, '$select!', function $Set_select$excl$17() {
+      var block = $Set_select$excl$17.$$p || nil, self = this, before = nil;
 
-      if ($iter) $Set_select$excl$24.$$p = null;
+      delete $Set_select$excl$17.$$p;
       
-      
-      if ($iter) $Set_select$excl$24.$$p = null;;
-      if ((block !== nil)) {
-      } else {
+      ;
+      if (!(block !== nil)) {
         return self.$enum_for("select!")
       };
       before = self.$size();
       $send(self, 'keep_if', [], block.$to_proc());
-      if (self.$size()['$=='](before)) {
+      if ($eqeq(self.$size(), before)) {
         return nil
       } else {
         return self
       };
-    }, $Set_select$excl$24.$$arity = 0);
-    $alias(self, "filter!", "select!");
+    }, 0);
     
-    Opal.def(self, '$add?', $Set_add$ques$25 = function(o) {
+    $def(self, '$add?', function $Set_add$ques$18(o) {
       var self = this;
 
       if ($truthy(self['$include?'](o))) {
@@ -313,265 +257,232 @@ Opal.modules["set"] = function(Opal) {
       } else {
         return self.$add(o)
       }
-    }, $Set_add$ques$25.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$each', $Set_each$26 = function $$each() {
-      var $iter = $Set_each$26.$$p, block = $iter || nil, self = this;
+    $def(self, '$each', function $$each() {
+      var block = $$each.$$p || nil, self = this;
 
-      if ($iter) $Set_each$26.$$p = null;
-      
+      delete $$each.$$p;
       
-      if ($iter) $Set_each$26.$$p = null;;
-      if ((block !== nil)) {
-      } else {
+      ;
+      if (!(block !== nil)) {
         return self.$enum_for("each")
       };
       $send(self.hash, 'each_key', [], block.$to_proc());
       return self;
-    }, $Set_each$26.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$empty?', $Set_empty$ques$27 = function() {
+    $def(self, '$empty?', function $Set_empty$ques$19() {
       var self = this;
 
       return self.hash['$empty?']()
-    }, $Set_empty$ques$27.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$eql?', $Set_eql$ques$28 = function(other) {
-      var $$29, self = this;
+    $def(self, '$eql?', function $Set_eql$ques$20(other) {
+      var self = this;
 
-      return self.hash['$eql?']($send(other, 'instance_eval', [], ($$29 = function(){var self = $$29.$$s == null ? this : $$29.$$s;
+      return self.hash['$eql?']($send(other, 'instance_eval', [], function $$21(){var self = $$21.$$s == null ? this : $$21.$$s;
         if (self.hash == null) self.hash = nil;
 
-        return self.hash}, $$29.$$s = self, $$29.$$arity = 0, $$29)))
-    }, $Set_eql$ques$28.$$arity = 1);
+        return self.hash}, {$$arity: 0, $$s: self}))
+    }, 1);
     
-    Opal.def(self, '$clear', $Set_clear$30 = function $$clear() {
+    $def(self, '$clear', function $$clear() {
       var self = this;
 
       
       self.hash.$clear();
       return self;
-    }, $Set_clear$30.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$include?', $Set_include$ques$31 = function(o) {
+    $def(self, '$include?', function $Set_include$ques$22(o) {
       var self = this;
 
       return self.hash['$include?'](o)
-    }, $Set_include$ques$31.$$arity = 1);
-    $alias(self, "member?", "include?");
+    }, 1);
     
-    Opal.def(self, '$merge', $Set_merge$32 = function $$merge(enum$) {
-      var $$33, self = this;
+    $def(self, '$merge', function $$merge(enum$) {
+      var self = this;
 
       
-      $send(enum$, 'each', [], ($$33 = function(item){var self = $$33.$$s == null ? this : $$33.$$s;
+      $send(enum$, 'each', [], function $$23(item){var self = $$23.$$s == null ? this : $$23.$$s;
 
         
         
-        if (item == null) {
-          item = nil;
-        };
-        return self.$add(item);}, $$33.$$s = self, $$33.$$arity = 1, $$33));
+        if (item == null) item = nil;;
+        return self.$add(item);}, {$$arity: 1, $$s: self});
       return self;
-    }, $Set_merge$32.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$replace', $Set_replace$34 = function $$replace(enum$) {
+    $def(self, '$replace', function $$replace(enum$) {
       var self = this;
 
       
       self.$clear();
       self.$merge(enum$);
       return self;
-    }, $Set_replace$34.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$size', $Set_size$35 = function $$size() {
+    $def(self, '$size', function $$size() {
       var self = this;
 
       return self.hash.$size()
-    }, $Set_size$35.$$arity = 0);
-    $alias(self, "length", "size");
+    }, 0);
     
-    Opal.def(self, '$subtract', $Set_subtract$36 = function $$subtract(enum$) {
-      var $$37, self = this;
+    $def(self, '$subtract', function $$subtract(enum$) {
+      var self = this;
 
       
-      $send(enum$, 'each', [], ($$37 = function(item){var self = $$37.$$s == null ? this : $$37.$$s;
+      $send(enum$, 'each', [], function $$24(item){var self = $$24.$$s == null ? this : $$24.$$s;
 
         
         
-        if (item == null) {
-          item = nil;
-        };
-        return self.$delete(item);}, $$37.$$s = self, $$37.$$arity = 1, $$37));
+        if (item == null) item = nil;;
+        return self.$delete(item);}, {$$arity: 1, $$s: self});
       return self;
-    }, $Set_subtract$36.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$|', $Set_$$38 = function(enum$) {
+    $def(self, '$|', function $Set_$$25(enum$) {
       var self = this;
 
       
-      if ($truthy(enum$['$respond_to?']("each"))) {
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "value must be enumerable")
+      if (!$truthy(enum$['$respond_to?']("each"))) {
+        $Kernel.$raise($$$('ArgumentError'), "value must be enumerable")
       };
       return self.$dup().$merge(enum$);
-    }, $Set_$$38.$$arity = 1);
+    }, 1);
+    
+    function is_set(set) {
+      ($truthy(($ret_or_1 = (set)['$is_a?']($$$('Set')))) ? ($ret_or_1) : ($Kernel.$raise($$$('ArgumentError'), "value must be a set")))
+    }
+  ;
     
-    Opal.def(self, '$superset?', $Set_superset$ques$39 = function(set) {
-      var $$40, self = this, $ret_or_2 = nil;
+    $def(self, '$superset?', function $Set_superset$ques$26(set) {
+      var self = this;
 
       
-      if ($truthy(($ret_or_2 = set['$is_a?']($$($nesting, 'Set'))))) {
-        $ret_or_2
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "value must be a set")
-      };
+      is_set(set);
       if ($truthy($rb_lt(self.$size(), set.$size()))) {
-        return false};
-      return $send(set, 'all?', [], ($$40 = function(o){var self = $$40.$$s == null ? this : $$40.$$s;
+        return false
+      };
+      return $send(set, 'all?', [], function $$27(o){var self = $$27.$$s == null ? this : $$27.$$s;
 
         
         
-        if (o == null) {
-          o = nil;
-        };
-        return self['$include?'](o);}, $$40.$$s = self, $$40.$$arity = 1, $$40));
-    }, $Set_superset$ques$39.$$arity = 1);
-    $alias(self, ">=", "superset?");
+        if (o == null) o = nil;;
+        return self['$include?'](o);}, {$$arity: 1, $$s: self});
+    }, 1);
     
-    Opal.def(self, '$proper_superset?', $Set_proper_superset$ques$41 = function(set) {
-      var $$42, self = this, $ret_or_3 = nil;
+    $def(self, '$proper_superset?', function $Set_proper_superset$ques$28(set) {
+      var self = this;
 
       
-      if ($truthy(($ret_or_3 = set['$is_a?']($$($nesting, 'Set'))))) {
-        $ret_or_3
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "value must be a set")
-      };
+      is_set(set);
       if ($truthy($rb_le(self.$size(), set.$size()))) {
-        return false};
-      return $send(set, 'all?', [], ($$42 = function(o){var self = $$42.$$s == null ? this : $$42.$$s;
+        return false
+      };
+      return $send(set, 'all?', [], function $$29(o){var self = $$29.$$s == null ? this : $$29.$$s;
 
         
         
-        if (o == null) {
-          o = nil;
-        };
-        return self['$include?'](o);}, $$42.$$s = self, $$42.$$arity = 1, $$42));
-    }, $Set_proper_superset$ques$41.$$arity = 1);
-    $alias(self, ">", "proper_superset?");
+        if (o == null) o = nil;;
+        return self['$include?'](o);}, {$$arity: 1, $$s: self});
+    }, 1);
     
-    Opal.def(self, '$subset?', $Set_subset$ques$43 = function(set) {
-      var $$44, self = this, $ret_or_4 = nil;
+    $def(self, '$subset?', function $Set_subset$ques$30(set) {
+      var self = this;
 
       
-      if ($truthy(($ret_or_4 = set['$is_a?']($$($nesting, 'Set'))))) {
-        $ret_or_4
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "value must be a set")
-      };
+      is_set(set);
       if ($truthy($rb_lt(set.$size(), self.$size()))) {
-        return false};
-      return $send(self, 'all?', [], ($$44 = function(o){var self = $$44.$$s == null ? this : $$44.$$s;
-
+        return false
+      };
+      return $send(self, 'all?', [], function $$31(o){
         
         
-        if (o == null) {
-          o = nil;
-        };
-        return set['$include?'](o);}, $$44.$$s = self, $$44.$$arity = 1, $$44));
-    }, $Set_subset$ques$43.$$arity = 1);
-    $alias(self, "<=", "subset?");
+        if (o == null) o = nil;;
+        return set['$include?'](o);}, 1);
+    }, 1);
     
-    Opal.def(self, '$proper_subset?', $Set_proper_subset$ques$45 = function(set) {
-      var $$46, self = this, $ret_or_5 = nil;
+    $def(self, '$proper_subset?', function $Set_proper_subset$ques$32(set) {
+      var self = this;
 
       
-      if ($truthy(($ret_or_5 = set['$is_a?']($$($nesting, 'Set'))))) {
-        $ret_or_5
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "value must be a set")
-      };
+      is_set(set);
       if ($truthy($rb_le(set.$size(), self.$size()))) {
-        return false};
-      return $send(self, 'all?', [], ($$46 = function(o){var self = $$46.$$s == null ? this : $$46.$$s;
-
+        return false
+      };
+      return $send(self, 'all?', [], function $$33(o){
         
         
-        if (o == null) {
-          o = nil;
-        };
-        return set['$include?'](o);}, $$46.$$s = self, $$46.$$arity = 1, $$46));
-    }, $Set_proper_subset$ques$45.$$arity = 1);
-    $alias(self, "<", "proper_subset?");
+        if (o == null) o = nil;;
+        return set['$include?'](o);}, 1);
+    }, 1);
     
-    Opal.def(self, '$intersect?', $Set_intersect$ques$47 = function(set) {
-      var $$48, $$49, self = this;
+    $def(self, '$intersect?', function $Set_intersect$ques$34(set) {
+      var self = this;
 
       
-      if ($truthy(set['$is_a?']($$($nesting, 'Set')))) {
-      } else {
-        self.$raise($$($nesting, 'ArgumentError'), "value must be a set")
-      };
+      is_set(set);
       if ($truthy($rb_lt(self.$size(), set.$size()))) {
-        return $send(self, 'any?', [], ($$48 = function(o){var self = $$48.$$s == null ? this : $$48.$$s;
-
+        return $send(self, 'any?', [], function $$35(o){
           
           
-          if (o == null) {
-            o = nil;
-          };
-          return set['$include?'](o);}, $$48.$$s = self, $$48.$$arity = 1, $$48))
+          if (o == null) o = nil;;
+          return set['$include?'](o);}, 1)
       } else {
-        return $send(set, 'any?', [], ($$49 = function(o){var self = $$49.$$s == null ? this : $$49.$$s;
+        return $send(set, 'any?', [], function $$36(o){var self = $$36.$$s == null ? this : $$36.$$s;
 
           
           
-          if (o == null) {
-            o = nil;
-          };
-          return self['$include?'](o);}, $$49.$$s = self, $$49.$$arity = 1, $$49))
+          if (o == null) o = nil;;
+          return self['$include?'](o);}, {$$arity: 1, $$s: self})
       };
-    }, $Set_intersect$ques$47.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$disjoint?', $Set_disjoint$ques$50 = function(set) {
+    $def(self, '$disjoint?', function $Set_disjoint$ques$37(set) {
       var self = this;
 
       return self['$intersect?'](set)['$!']()
-    }, $Set_disjoint$ques$50.$$arity = 1);
-    $alias(self, "+", "|");
-    $alias(self, "union", "|");
-    return (Opal.def(self, '$to_a', $Set_to_a$51 = function $$to_a() {
+    }, 1);
+    
+    $def(self, '$to_a', function $$to_a() {
       var self = this;
 
       return self.hash.$keys()
-    }, $Set_to_a$51.$$arity = 0), nil) && 'to_a';
-  })($nesting[0], null, $nesting);
+    }, 0);
+    $alias(self, "+", "|");
+    $alias(self, "<", "proper_subset?");
+    $alias(self, "<<", "add");
+    $alias(self, "<=", "subset?");
+    $alias(self, ">", "proper_superset?");
+    $alias(self, ">=", "superset?");
+    $alias(self, "difference", "-");
+    $alias(self, "filter!", "select!");
+    $alias(self, "length", "size");
+    $alias(self, "map!", "collect!");
+    $alias(self, "member?", "include?");
+    return $alias(self, "union", "|");
+  })('::', null);
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Enumerable');
 
-    var $nesting = [self].concat($parent_nesting), $Enumerable_to_set$52;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
-    return (Opal.def(self, '$to_set', $Enumerable_to_set$52 = function $$to_set($a, $b) {
-      var $iter = $Enumerable_to_set$52.$$p, block = $iter || nil, $post_args, klass, args, self = this;
+    return $def(self, '$to_set', function $$to_set($a, $b) {
+      var block = $$to_set.$$p || nil, $post_args, klass, args, self = this;
 
-      if ($iter) $Enumerable_to_set$52.$$p = null;
-      
+      delete $$to_set.$$p;
       
-      if ($iter) $Enumerable_to_set$52.$$p = null;;
+      ;
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
-      if ($post_args.length > 0) {
-        klass = $post_args[0];
-        $post_args.splice(0, 1);
-      }
-      if (klass == null) {
-        klass = $$($nesting, 'Set');
-      };
+      if ($post_args.length > 0) klass = $post_args.shift();
+      if (klass == null) klass = $$('Set');;
       
       args = $post_args;;
-      return $send(klass, 'new', [self].concat(Opal.to_a(args)), block.$to_proc());
-    }, $Enumerable_to_set$52.$$arity = -1), nil) && 'to_set'
-  })($nesting[0], $nesting);
+      return $send(klass, 'new', [self].concat($to_a(args)), block.$to_proc());
+    }, -1)
+  })('::', $nesting);
 };
diff --git a/opal/master/set.min.js b/opal/master/set.min.js
index e3c39981..945f259f 100644
--- a/opal/master/set.min.js
+++ b/opal/master/set.min.js
@@ -1 +1 @@
-Opal.modules.set=function(Opal){function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}function $rb_lt(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs<rhs:lhs["$<"](rhs)}function $rb_le(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs<=rhs:lhs["$<="](rhs)}Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$klass=Opal.klass,$hash2=Opal.hash2,$truthy=Opal.truthy,$send=Opal.send,$alias=Opal.alias,$module=Opal.module;return 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this.$new($post_args)},$Set_disjoint$ques$50.$$arity=-1),Opal.def($Set_to_a$51,"$initialize",$Set_initialize$2=function(enum$){var $$3,$iter=$Set_initialize$2.$$p,block=$iter||nil;return $iter&&($Set_initialize$2.$$p=null),$iter&&($Set_initialize$2.$$p=null),null==enum$&&(enum$=nil),this.hash=$hash2([],{}),$truthy(enum$["$nil?"]())?nil:($truthy($$($nesting,"Enumerable")["$==="](enum$))||this.$raise($$($nesting,"ArgumentError"),"value must be enumerable"),$truthy(block)?$send(enum$,"each",[],(($$3=function(item){var self=null==$$3.$$s?this:$$3.$$s;return null==item&&(item=nil),self.$add(Opal.yield1(block,item))}).$$s=this,$$3.$$arity=1,$$3)):this.$merge(enum$))},$Set_initialize$2.$$arity=-1),Opal.def($Set_to_a$51,"$dup",$Set_disjoint$ques$50=function(){return this.$class().$new().$merge(this)},$Set_disjoint$ques$50.$$arity=0),Opal.def($Set_to_a$51,"$-",$Set_disjoint$ques$50=function(enum$){return $truthy(enum$["$respond_to?"]("each"))||this.$raise($$($nesting,"ArgumentError"),"value 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$send(this.hash,"[]=",Opal.to_a($writer)),$rb_minus($writer.length,1),this},$Set_disjoint$ques$50.$$arity=1),$alias($Set_to_a$51,"<<","add"),Opal.def($Set_to_a$51,"$classify",$Set_classify$10=function(){var $$11,$$12,$iter=$Set_classify$10.$$p,block=$iter||nil,result=nil;return $iter&&($Set_classify$10.$$p=null),$iter&&($Set_classify$10.$$p=null),block===nil?this.$enum_for("classify"):(result=$send($$($nesting,"Hash"),"new",[],(($$11=function(h,k){var $writer,self=null==$$11.$$s?this:$$11.$$s;return null==h&&(h=nil),null==k&&(k=nil),$writer=[k,self.$class().$new()],$send(h,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]}).$$s=this,$$11.$$arity=2,$$11)),$send(this,"each",[],(($$12=function(item){null==$$12.$$s||$$12.$$s;return null==item&&(item=nil),result["$[]"](Opal.yield1(block,item)).$add(item)}).$$s=this,$$12.$$arity=1,$$12)),result)},$Set_classify$10.$$arity=0),Opal.def($Set_to_a$51,"$collect!",$Set_collect$excl$13=function(){var $$14,$iter=$Set_collect$excl$13.$$p,block=$iter||nil,result=nil;return $iter&&($Set_collect$excl$13.$$p=null),$iter&&($Set_collect$excl$13.$$p=null),block===nil?this.$enum_for("collect!"):(result=this.$class().$new(),$send(this,"each",[],(($$14=function(item){null==$$14.$$s||$$14.$$s;return null==item&&(item=nil),result["$<<"](Opal.yield1(block,item))}).$$s=this,$$14.$$arity=1,$$14)),this.$replace(result))},$Set_collect$excl$13.$$arity=0),$alias($Set_to_a$51,"map!","collect!"),Opal.def($Set_to_a$51,"$delete",$Set_disjoint$ques$50=function(o){return this.hash.$delete(o),this},$Set_disjoint$ques$50.$$arity=1),Opal.def($Set_to_a$51,"$delete?",$Set_disjoint$ques$50=function(o){return $truthy(this["$include?"](o))?(this.$delete(o),this):nil},$Set_disjoint$ques$50.$$arity=1),Opal.def($Set_to_a$51,"$delete_if",$Set_delete_if$17=function(){var $$18,$$19,$iter=$Set_delete_if$17.$$p,$yield=$iter||nil;return $iter&&($Set_delete_if$17.$$p=null),$yield===nil?this.$enum_for("delete_if"):($send($send(this,"select",[],(($$18=function(o){null==$$18.$$s||$$18.$$s;return null==o&&(o=nil),Opal.yield1($yield,o)}).$$s=this,$$18.$$arity=1,$$18)),"each",[],(($$19=function(o){var self=null==$$19.$$s?this:$$19.$$s;return null==self.hash&&(self.hash=nil),null==o&&(o=nil),self.hash.$delete(o)}).$$s=this,$$19.$$arity=1,$$19)),this)},$Set_delete_if$17.$$arity=0),Opal.def($Set_to_a$51,"$keep_if",$Set_keep_if$20=function(){var $$21,$$22,$iter=$Set_keep_if$20.$$p,$yield=$iter||nil;return $iter&&($Set_keep_if$20.$$p=null),$yield===nil?this.$enum_for("keep_if"):($send($send(this,"reject",[],(($$21=function(o){null==$$21.$$s||$$21.$$s;return null==o&&(o=nil),Opal.yield1($yield,o)}).$$s=this,$$21.$$arity=1,$$21)),"each",[],(($$22=function(o){var self=null==$$22.$$s?this:$$22.$$s;return 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$iter&&($Set_select$excl$24.$$p=null),$iter&&($Set_select$excl$24.$$p=null),block===nil?this.$enum_for("select!"):(before=this.$size(),$send(this,"keep_if",[],block.$to_proc()),this.$size()["$=="](before)?nil:this)},$Set_select$excl$24.$$arity=0),$alias($Set_to_a$51,"filter!","select!"),Opal.def($Set_to_a$51,"$add?",$Set_disjoint$ques$50=function(o){return $truthy(this["$include?"](o))?nil:this.$add(o)},$Set_disjoint$ques$50.$$arity=1),Opal.def($Set_to_a$51,"$each",$Set_each$26=function(){var $iter=$Set_each$26.$$p,block=$iter||nil;return $iter&&($Set_each$26.$$p=null),$iter&&($Set_each$26.$$p=null),block===nil?this.$enum_for("each"):($send(this.hash,"each_key",[],block.$to_proc()),this)},$Set_each$26.$$arity=0),Opal.def($Set_to_a$51,"$empty?",$Set_disjoint$ques$50=function(){return this.hash["$empty?"]()},$Set_disjoint$ques$50.$$arity=0),Opal.def($Set_to_a$51,"$eql?",$Set_disjoint$ques$50=function(other){var $$29;return this.hash["$eql?"]($send(other,"instance_eval",[],(($$29=function(){var self=null==$$29.$$s?this:$$29.$$s;return null==self.hash&&(self.hash=nil),self.hash}).$$s=this,$$29.$$arity=0,$$29)))},$Set_disjoint$ques$50.$$arity=1),Opal.def($Set_to_a$51,"$clear",$Set_disjoint$ques$50=function(){return this.hash.$clear(),this},$Set_disjoint$ques$50.$$arity=0),Opal.def($Set_to_a$51,"$include?",$Set_disjoint$ques$50=function(o){return this.hash["$include?"](o)},$Set_disjoint$ques$50.$$arity=1),$alias($Set_to_a$51,"member?","include?"),Opal.def($Set_to_a$51,"$merge",$Set_disjoint$ques$50=function(enum$){var $$33;return $send(enum$,"each",[],(($$33=function(item){var self=null==$$33.$$s?this:$$33.$$s;return null==item&&(item=nil),self.$add(item)}).$$s=this,$$33.$$arity=1,$$33)),this},$Set_disjoint$ques$50.$$arity=1),Opal.def($Set_to_a$51,"$replace",$Set_disjoint$ques$50=function(enum$){return 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$Set_reject$excl$16.$$p,block===nil?this.$enum_for("reject!"):(before=this.$size(),$send(this,"delete_if",[],block.$to_proc()),$eqeq(this.$size(),before)?nil:this)}),0),$def(self,"$select!",(function $Set_select$excl$17(){var before,block=$Set_select$excl$17.$$p||nil;return delete $Set_select$excl$17.$$p,block===nil?this.$enum_for("select!"):(before=this.$size(),$send(this,"keep_if",[],block.$to_proc()),$eqeq(this.$size(),before)?nil:this)}),0),$def(self,"$add?",(function(o){return $truthy(this["$include?"](o))?nil:this.$add(o)}),1),$def(self,"$each",(function $$each(){var block=$$each.$$p||nil;return delete $$each.$$p,block===nil?this.$enum_for("each"):($send(this.hash,"each_key",[],block.$to_proc()),this)}),0),$def(self,"$empty?",(function(){return this.hash["$empty?"]()}),0),$def(self,"$eql?",(function(other){return this.hash["$eql?"]($send(other,"instance_eval",[],(function $$21(){var self=null==$$21.$$s?this:$$21.$$s;return null==self.hash&&(self.hash=nil),self.hash}),{$$arity:0,$$s:this}))}),1),$def(self,"$clear",(function(){return this.hash.$clear(),this}),0),$def(self,"$include?",(function(o){return this.hash["$include?"](o)}),1),$def(self,"$merge",(function(enum$){return $send(enum$,"each",[],(function $$23(item){return null==item&&(item=nil),(null==$$23.$$s?this:$$23.$$s).$add(item)}),{$$arity:1,$$s:this}),this}),1),$def(self,"$replace",(function(enum$){return this.$clear(),this.$merge(enum$),this}),1),$def(self,"$size",(function(){return this.hash.$size()}),0),$def(self,"$subtract",(function(enum$){return $send(enum$,"each",[],(function $$24(item){return null==item&&(item=nil),(null==$$24.$$s?this:$$24.$$s).$delete(item)}),{$$arity:1,$$s:this}),this}),1),$def(self,"$|",(function(enum$){return $truthy(enum$["$respond_to?"]("each"))||$Kernel.$raise($$$("ArgumentError"),"value must be enumerable"),this.$dup().$merge(enum$)}),1),$def(self,"$superset?",(function(set){return is_set(set),!$truthy($rb_lt(this.$size(),set.$size()))&&$send(set,"all?",[],(function $$27(o){return null==o&&(o=nil),(null==$$27.$$s?this:$$27.$$s)["$include?"](o)}),{$$arity:1,$$s:this})}),1),$def(self,"$proper_superset?",(function(set){return is_set(set),!$truthy($rb_le(this.$size(),set.$size()))&&$send(set,"all?",[],(function $$29(o){return null==o&&(o=nil),(null==$$29.$$s?this:$$29.$$s)["$include?"](o)}),{$$arity:1,$$s:this})}),1),$def(self,"$subset?",(function(set){return is_set(set),!$truthy($rb_lt(set.$size(),this.$size()))&&$send(this,"all?",[],(function(o){return null==o&&(o=nil),set["$include?"](o)}),1)}),1),$def(self,"$proper_subset?",(function(set){return is_set(set),!$truthy($rb_le(set.$size(),this.$size()))&&$send(this,"all?",[],(function(o){return null==o&&(o=nil),set["$include?"](o)}),1)}),1),$def(self,"$intersect?",(function(set){return is_set(set),$truthy($rb_lt(this.$size(),set.$size()))?$send(this,"any?",[],(function(o){return null==o&&(o=nil),set["$include?"](o)}),1):$send(set,"any?",[],(function $$36(o){return null==o&&(o=nil),(null==$$36.$$s?this:$$36.$$s)["$include?"](o)}),{$$arity:1,$$s:this})}),1),$def(self,"$disjoint?",(function(set){return this["$intersect?"](set)["$!"]()}),1),$def(self,"$to_a",(function(){return this.hash.$keys()}),0),$alias(self,"+","|"),$alias(self,"<","proper_subset?"),$alias(self,"<<","add"),$alias(self,"<=","subset?"),$alias(self,">","proper_superset?"),$alias(self,">=","superset?"),$alias(self,"difference","-"),$alias(self,"filter!","select!"),$alias(self,"length","size"),$alias(self,"map!","collect!"),$alias(self,"member?","include?"),$alias(self,"union","|")}(),function($base,$parent_nesting){var self=$module("::","Enumerable"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return $def(self,"$to_set",(function $$to_set($a,$b){var $post_args,klass,block=$$to_set.$$p||nil,self=this;return delete $$to_set.$$p,($post_args=Opal.slice.call(arguments)).length>0&&(klass=$post_args.shift()),null==klass&&(klass=$$("Set")),$send(klass,"new",[self].concat($to_a($post_args)),block.$to_proc())}),-1)}(0,[])};
diff --git a/opal/master/set.min.js.gz b/opal/master/set.min.js.gz
index 7509533a..fad31288 100644
Binary files a/opal/master/set.min.js.gz and b/opal/master/set.min.js.gz differ
diff --git a/opal/master/shellwords.js b/opal/master/shellwords.js
new file mode 100644
index 00000000..bd1e8bb3
--- /dev/null
+++ b/opal/master/shellwords.js
@@ -0,0 +1,109 @@
+Opal.modules["shellwords"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $rb_plus = Opal.rb_plus, $send = Opal.send, $to_ary = Opal.to_ary, $truthy = Opal.truthy, $def = Opal.def, $alias = Opal.alias, $klass = Opal.klass;
+
+  Opal.add_stubs('+,new,scan,raise,inspect,gsub,<<,module_function,to_s,empty?,dup,join,map,shellescape,split,escape');
+  
+  (function($base, $parent_nesting) {
+    var self = $module($base, 'Shellwords');
+
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+    
+    
+    $def(self, '$shellsplit', function $$shellsplit(line) {
+      var self = this, words = nil, field = nil;
+
+      
+      line = $rb_plus(line, " ");
+      words = [];
+      field = $$('String').$new();
+      $send(line, 'scan', [/\s*(?:([^\s\\\'\"]+)|'([^\']*)'|"((?:[^\"\\]|\\.)*)"|(\\.?)|(\S))(\r?\n?\Z|\s)?/m], function $$1($mlhs_tmp1){var $a, $b, self = $$1.$$s == null ? this : $$1.$$s, word = nil, sq = nil, dq = nil, esc = nil, garbage = nil, sep = nil, $ret_or_1 = nil, $ret_or_2 = nil, $ret_or_3 = nil;
+
+        
+        
+        if ($mlhs_tmp1 == null) $mlhs_tmp1 = nil;;
+        $b = $mlhs_tmp1, $a = $to_ary($b), (word = ($a[0] == null ? nil : $a[0])), (sq = ($a[1] == null ? nil : $a[1])), (dq = ($a[2] == null ? nil : $a[2])), (esc = ($a[3] == null ? nil : $a[3])), (garbage = ($a[4] == null ? nil : $a[4])), (sep = ($a[5] == null ? nil : $a[5])), $b;
+        if ($truthy(garbage)) {
+          self.$raise($$('ArgumentError'), "Unmatched quote: " + (line.$inspect()))
+        };
+        field = $rb_plus(field, ($truthy(($ret_or_1 = ($truthy(($ret_or_2 = ($truthy(($ret_or_3 = word)) ? ($ret_or_3) : (sq)))) ? ($ret_or_2) : (($truthy(($ret_or_3 = dq)) ? (dq.$gsub(/\\([$`"\\\n])/, "\\1")) : ($ret_or_3)))))) ? ($ret_or_1) : (esc.$gsub(/\\(.)/, "\\1"))));
+        if ($truthy(sep)) {
+          
+          words['$<<'](field);
+          return (field = $$('String').$new());
+        } else {
+          return nil
+        };}, {$$arity: 1, $$s: self, $$has_top_level_mlhs_arg: true});
+      return words;
+    }, 1);
+    $alias(self, "shellwords", "shellsplit");
+    self.$module_function("shellsplit", "shellwords");
+    (function(self, $parent_nesting) {
+      
+      return $alias(self, "split", "shellsplit")
+    })(Opal.get_singleton_class(self), $nesting);
+    
+    $def(self, '$shellescape', function $$shellescape(str) {
+      
+      
+      str = str.$to_s();
+      if ($truthy(str['$empty?']())) {
+        return "''".$dup()
+      };
+      str = str.$dup();
+      str = str.$gsub(/[^A-Za-z0-9_\-.,:+\/@\n]/, "\\\\\\&");
+      str = str.$gsub(/\n/, "'\n'");
+      return str;
+    }, 1);
+    self.$module_function("shellescape");
+    (function(self, $parent_nesting) {
+      
+      return $alias(self, "escape", "shellescape")
+    })(Opal.get_singleton_class(self), $nesting);
+    
+    $def(self, '$shelljoin', function $$shelljoin(array) {
+      var self = this;
+
+      return $send(array, 'map', [], function $$2(arg){var self = $$2.$$s == null ? this : $$2.$$s;
+
+        
+        
+        if (arg == null) arg = nil;;
+        return self.$shellescape(arg);}, {$$arity: 1, $$s: self}).$join(" ")
+    }, 1);
+    self.$module_function("shelljoin");
+    return (function(self, $parent_nesting) {
+      
+      return $alias(self, "join", "shelljoin")
+    })(Opal.get_singleton_class(self), $nesting);
+  })($nesting[0], $nesting);
+  (function($base, $super, $parent_nesting) {
+    var self = $klass($base, $super, 'String');
+
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+    
+    
+    $def(self, '$shellsplit', function $$shellsplit() {
+      var self = this;
+
+      return $$('Shellwords').$split(self)
+    }, 0);
+    return $def(self, '$shellescape', function $$shellescape() {
+      var self = this;
+
+      return $$('Shellwords').$escape(self)
+    }, 0);
+  })($nesting[0], null, $nesting);
+  return (function($base, $super, $parent_nesting) {
+    var self = $klass($base, $super, 'Array');
+
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+    return $def(self, '$shelljoin', function $$shelljoin() {
+      var self = this;
+
+      return $$('Shellwords').$join(self)
+    }, 0)
+  })($nesting[0], null, $nesting);
+};
diff --git a/opal/master/shellwords.min.js b/opal/master/shellwords.min.js
new file mode 100644
index 00000000..35cc092b
--- /dev/null
+++ b/opal/master/shellwords.min.js
@@ -0,0 +1 @@
+Opal.modules.shellwords=function(Opal){var $nesting=[],nil=Opal.nil,$module=Opal.module,$rb_plus=Opal.rb_plus,$send=Opal.send,$to_ary=Opal.to_ary,$truthy=Opal.truthy,$def=Opal.def,$alias=Opal.alias,$klass=Opal.klass;return Opal.add_stubs("+,new,scan,raise,inspect,gsub,<<,module_function,to_s,empty?,dup,join,map,shellescape,split,escape"),function($base,$parent_nesting){var self=$module($base,"Shellwords"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);$def(self,"$shellsplit",(function(line){var words=nil,field=nil;return line=$rb_plus(line," "),words=[],field=$$("String").$new(),$send(line,"scan",[/\s*(?:([^\s\\\'\"]+)|'([^\']*)'|"((?:[^\"\\]|\\.)*)"|(\\.?)|(\S))(\r?\n?\Z|\s)?/m],(function $$1($mlhs_tmp1){var $a,word,sq,garbage,sep,$ret_or_1,$ret_or_2,self=null==$$1.$$s?this:$$1.$$s,dq=nil,esc=nil,$ret_or_3=nil;return null==$mlhs_tmp1&&($mlhs_tmp1=nil),word=null==($a=$to_ary($mlhs_tmp1))[0]?nil:$a[0],sq=null==$a[1]?nil:$a[1],dq=null==$a[2]?nil:$a[2],esc=null==$a[3]?nil:$a[3],garbage=null==$a[4]?nil:$a[4],sep=null==$a[5]?nil:$a[5],$truthy(garbage)&&self.$raise($$("ArgumentError"),"Unmatched quote: "+line.$inspect()),field=$rb_plus(field,$truthy($ret_or_1=$truthy($ret_or_2=$truthy($ret_or_3=word)?$ret_or_3:sq)?$ret_or_2:$truthy($ret_or_3=dq)?dq.$gsub(/\\([$`"\\\n])/,"\\1"):$ret_or_3)?$ret_or_1:esc.$gsub(/\\(.)/,"\\1")),$truthy(sep)?(words["$<<"](field),field=$$("String").$new()):nil}),{$$arity:1,$$s:this,$$has_top_level_mlhs_arg:!0}),words}),1),$alias(self,"shellwords","shellsplit"),self.$module_function("shellsplit","shellwords"),function(self,$parent_nesting){$alias(self,"split","shellsplit")}(Opal.get_singleton_class(self)),$def(self,"$shellescape",(function(str){return str=str.$to_s(),$truthy(str["$empty?"]())?"''".$dup():str=(str=(str=str.$dup()).$gsub(/[^A-Za-z0-9_\-.,:+\/@\n]/,"\\\\\\&")).$gsub(/\n/,"'\n'")}),1),self.$module_function("shellescape"),function(self,$parent_nesting){$alias(self,"escape","shellescape")}(Opal.get_singleton_class(self)),$def(self,"$shelljoin",(function(array){return $send(array,"map",[],(function $$2(arg){return null==arg&&(arg=nil),(null==$$2.$$s?this:$$2.$$s).$shellescape(arg)}),{$$arity:1,$$s:this}).$join(" ")}),1),self.$module_function("shelljoin"),function(self,$parent_nesting){$alias(self,"join","shelljoin")}(Opal.get_singleton_class(self))}($nesting[0],$nesting),function($base,$super,$parent_nesting){var self=$klass($base,null,"String"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);$def(self,"$shellsplit",(function(){return $$("Shellwords").$split(this)}),0),$def(self,"$shellescape",(function(){return $$("Shellwords").$escape(this)}),0)}($nesting[0],0,$nesting),function($base,$super,$parent_nesting){var self=$klass($base,null,"Array"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return $def(self,"$shelljoin",(function(){return $$("Shellwords").$join(this)}),0)}($nesting[0],0,$nesting)};
diff --git a/opal/master/shellwords.min.js.gz b/opal/master/shellwords.min.js.gz
new file mode 100644
index 00000000..1d3c1c33
Binary files /dev/null and b/opal/master/shellwords.min.js.gz differ
diff --git a/opal/master/singleton.js b/opal/master/singleton.js
index 31baa606..28f6cd1b 100644
--- a/opal/master/singleton.js
+++ b/opal/master/singleton.js
@@ -1,92 +1,80 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["singleton"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $module = Opal.module, $send2 = Opal.send2, $find_super = Opal.find_super, $send = Opal.send, $truthy = Opal.truthy;
+Opal.modules["singleton"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $def = Opal.def, $send2 = Opal.send2, $find_super = Opal.find_super, $send = Opal.send, $truthy = Opal.truthy, $defs = Opal.defs;
 
-  Opal.add_stubs(['$raise', '$class', '$__init__', '$instance_eval', '$new', '$extend']);
+  Opal.add_stubs('raise,class,__init__,instance_eval,new,extend');
   return (function($base, $parent_nesting) {
     var self = $module($base, 'Singleton');
 
-    var $nesting = [self].concat($parent_nesting), $Singleton_clone$1, $Singleton_dup$2;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
     
     
-    Opal.def(self, '$clone', $Singleton_clone$1 = function $$clone() {
+    $def(self, '$clone', function $$clone() {
       var self = this;
 
-      return self.$raise($$($nesting, 'TypeError'), "" + "can't clone instance of singleton " + (self.$class()))
-    }, $Singleton_clone$1.$$arity = 0);
+      return self.$raise($$('TypeError'), "can't clone instance of singleton " + (self.$class()))
+    }, 0);
     
-    Opal.def(self, '$dup', $Singleton_dup$2 = function $$dup() {
+    $def(self, '$dup', function $$dup() {
       var self = this;
 
-      return self.$raise($$($nesting, 'TypeError'), "" + "can't dup instance of singleton " + (self.$class()))
-    }, $Singleton_dup$2.$$arity = 0);
+      return self.$raise($$('TypeError'), "can't dup instance of singleton " + (self.$class()))
+    }, 0);
     (function($base, $parent_nesting) {
       var self = $module($base, 'SingletonClassMethods');
 
-      var $nesting = [self].concat($parent_nesting), $SingletonClassMethods_clone$3, $SingletonClassMethods_inherited$4;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
       
-      Opal.def(self, '$clone', $SingletonClassMethods_clone$3 = function $$clone() {
-        var $iter = $SingletonClassMethods_clone$3.$$p, $yield = $iter || nil, self = this, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+      $def(self, '$clone', function $$clone() {
+        var $yield = $$clone.$$p || nil, self = this;
 
-        if ($iter) $SingletonClassMethods_clone$3.$$p = null;
-        // Prepare super implicit arguments
-        for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-          $zuper[$zuper_i] = arguments[$zuper_i];
-        }
-        return $$($nesting, 'Singleton').$__init__($send2(self, $find_super(self, 'clone', $SingletonClassMethods_clone$3, false, true), 'clone', $zuper, $iter))
-      }, $SingletonClassMethods_clone$3.$$arity = 0);
-      return (Opal.def(self, '$inherited', $SingletonClassMethods_inherited$4 = function $$inherited(sub_klass) {
-        var $iter = $SingletonClassMethods_inherited$4.$$p, $yield = $iter || nil, self = this, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+        delete $$clone.$$p;
+        return $$('Singleton').$__init__($send2(self, $find_super(self, 'clone', $$clone, false, true), 'clone', [], $yield))
+      }, 0);
+      return $def(self, '$inherited', function $$inherited(sub_klass) {
+        var $yield = $$inherited.$$p || nil, self = this;
 
-        if ($iter) $SingletonClassMethods_inherited$4.$$p = null;
-        // Prepare super implicit arguments
-        for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-          $zuper[$zuper_i] = arguments[$zuper_i];
-        }
+        delete $$inherited.$$p;
         
-        $send2(self, $find_super(self, 'inherited', $SingletonClassMethods_inherited$4, false, true), 'inherited', $zuper, $iter);
-        return $$($nesting, 'Singleton').$__init__(sub_klass);
-      }, $SingletonClassMethods_inherited$4.$$arity = 1), nil) && 'inherited';
+        $send2(self, $find_super(self, 'inherited', $$inherited, false, true), 'inherited', [sub_klass], $yield);
+        return $$('Singleton').$__init__(sub_klass);
+      }, 1);
     })($nesting[0], $nesting);
     return (function(self, $parent_nesting) {
-      var $nesting = [self].concat($parent_nesting), $__init__$5, $included$8;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
 
       
       
-      Opal.def(self, '$__init__', $__init__$5 = function $$__init__(klass) {
-        var $$6, $instance$7, self = this;
+      $def(self, '$__init__', function $$__init__(klass) {
+        var self = this;
 
         
-        $send(klass, 'instance_eval', [], ($$6 = function(){var self = $$6.$$s == null ? this : $$6.$$s;
+        $send(klass, 'instance_eval', [], function $$1(){var self = $$1.$$s == null ? this : $$1.$$s;
 
-          return (self.singleton__instance__ = nil)}, $$6.$$s = self, $$6.$$arity = 0, $$6));
-        Opal.defs(klass, '$instance', $instance$7 = function $$instance() {
+          return (self.singleton__instance__ = nil)}, {$$arity: 0, $$s: self});
+        $defs(klass, '$instance', function $$instance() {
           var self = this;
           if (self.singleton__instance__ == null) self.singleton__instance__ = nil;
 
           
           if ($truthy(self.singleton__instance__)) {
-            return self.singleton__instance__};
+            return self.singleton__instance__
+          };
           return (self.singleton__instance__ = self.$new());
-        }, $instance$7.$$arity = 0);
+        }, 0);
         return klass;
-      }, $__init__$5.$$arity = 1);
-      return (Opal.def(self, '$included', $included$8 = function $$included(klass) {
-        var $iter = $included$8.$$p, $yield = $iter || nil, self = this, $zuper = nil, $zuper_i = nil, $zuper_ii = nil;
+      }, 1);
+      return $def(self, '$included', function $$included(klass) {
+        var $yield = $$included.$$p || nil, self = this;
 
-        if ($iter) $included$8.$$p = null;
-        // Prepare super implicit arguments
-        for($zuper_i = 0, $zuper_ii = arguments.length, $zuper = new Array($zuper_ii); $zuper_i < $zuper_ii; $zuper_i++) {
-          $zuper[$zuper_i] = arguments[$zuper_i];
-        }
+        delete $$included.$$p;
         
-        $send2(self, $find_super(self, 'included', $included$8, false, true), 'included', $zuper, $iter);
-        klass.$extend($$($nesting, 'SingletonClassMethods'));
-        return $$($nesting, 'Singleton').$__init__(klass);
-      }, $included$8.$$arity = 1), nil) && 'included';
-    })(Opal.get_singleton_class($$($nesting, 'Singleton')), $nesting);
+        $send2(self, $find_super(self, 'included', $$included, false, true), 'included', [klass], $yield);
+        klass.$extend($$('SingletonClassMethods'));
+        return $$('Singleton').$__init__(klass);
+      }, 1);
+    })(Opal.get_singleton_class($$('Singleton')), $nesting);
   })($nesting[0], $nesting)
 };
diff --git a/opal/master/singleton.min.js b/opal/master/singleton.min.js
index b22ad3c1..41309da9 100644
--- a/opal/master/singleton.min.js
+++ b/opal/master/singleton.min.js
@@ -1 +1 @@
-Opal.modules.singleton=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$module=Opal.module,$send2=Opal.send2,$find_super=Opal.find_super,$send=Opal.send,$truthy=Opal.truthy;return Opal.add_stubs(["$raise","$class","$__init__","$instance_eval","$new","$extend"]),function($Singleton_dup$2,$Singleton_clone$1){var $Singleton_dup$2=$module($Singleton_dup$2,"Singleton"),$nesting=[$Singleton_dup$2].concat($Singleton_clone$1);return Opal.def($Singleton_dup$2,"$clone",$Singleton_clone$1=function(){return this.$raise($$($nesting,"TypeError"),"can't clone instance of singleton "+this.$class())},$Singleton_clone$1.$$arity=0),Opal.def($Singleton_dup$2,"$dup",$Singleton_dup$2=function(){return this.$raise($$($nesting,"TypeError"),"can't dup instance of singleton "+this.$class())},$Singleton_dup$2.$$arity=0),function(self,$parent_nesting){var $SingletonClassMethods_clone$3,$SingletonClassMethods_inherited$4,$nesting=[self=$module(self,"SingletonClassMethods")].concat($parent_nesting);Opal.def(self,"$clone",$SingletonClassMethods_clone$3=function(){var $zuper_ii,$iter=$SingletonClassMethods_clone$3.$$p,$zuper=nil,$zuper_i=nil;for($iter&&($SingletonClassMethods_clone$3.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return $$($nesting,"Singleton").$__init__($send2(this,$find_super(this,"clone",$SingletonClassMethods_clone$3,!1,!0),"clone",$zuper,$iter))},$SingletonClassMethods_clone$3.$$arity=0),Opal.def(self,"$inherited",$SingletonClassMethods_inherited$4=function(sub_klass){var $zuper_ii,$iter=$SingletonClassMethods_inherited$4.$$p,$zuper=nil,$zuper_i=nil;for($iter&&($SingletonClassMethods_inherited$4.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return $send2(this,$find_super(this,"inherited",$SingletonClassMethods_inherited$4,!1,!0),"inherited",$zuper,$iter),$$($nesting,"Singleton").$__init__(sub_klass)},$SingletonClassMethods_inherited$4.$$arity=1)}($nesting[0],$nesting),function(self,$__init__$5){var $included$8,$nesting=[self].concat($__init__$5);return Opal.def(self,"$__init__",$__init__$5=function(klass){var $$6,$instance$7;return $send(klass,"instance_eval",[],(($$6=function(){return(null==$$6.$$s?this:$$6.$$s).singleton__instance__=nil}).$$s=this,$$6.$$arity=0,$$6)),Opal.defs(klass,"$instance",$instance$7=function(){return null==this.singleton__instance__&&(this.singleton__instance__=nil),$truthy(this.singleton__instance__)?this.singleton__instance__:this.singleton__instance__=this.$new()},$instance$7.$$arity=0),klass},$__init__$5.$$arity=1),Opal.def(self,"$included",$included$8=function(klass){var $zuper_ii,$iter=$included$8.$$p,$zuper=nil,$zuper_i=nil;for($iter&&($included$8.$$p=null),$zuper_i=0,$zuper_ii=arguments.length,$zuper=new Array($zuper_ii);$zuper_i<$zuper_ii;$zuper_i++)$zuper[$zuper_i]=arguments[$zuper_i];return $send2(this,$find_super(this,"included",$included$8,!1,!0),"included",$zuper,$iter),klass.$extend($$($nesting,"SingletonClassMethods")),$$($nesting,"Singleton").$__init__(klass)},$included$8.$$arity=1),nil&&"included"}(Opal.get_singleton_class($$($nesting,"Singleton")),$nesting)}($nesting[0],$nesting)};
+Opal.modules.singleton=function(Opal){var $nesting=[],nil=Opal.nil,$module=Opal.module,$def=Opal.def,$send2=Opal.send2,$find_super=Opal.find_super,$send=Opal.send,$truthy=Opal.truthy,$defs=Opal.defs;return Opal.add_stubs("raise,class,__init__,instance_eval,new,extend"),function($base,$parent_nesting){var self=$module($base,"Singleton"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return $def(self,"$clone",(function(){return this.$raise($$("TypeError"),"can't clone instance of singleton "+this.$class())}),0),$def(self,"$dup",(function(){return this.$raise($$("TypeError"),"can't dup instance of singleton "+this.$class())}),0),function($base,$parent_nesting){var self=$module($base,"SingletonClassMethods"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);$def(self,"$clone",(function $$clone(){var $yield=$$clone.$$p||nil;return delete $$clone.$$p,$$("Singleton").$__init__($send2(this,$find_super(this,"clone",$$clone,!1,!0),"clone",[],$yield))}),0),$def(self,"$inherited",(function $$inherited(sub_klass){var $yield=$$inherited.$$p||nil;return delete $$inherited.$$p,$send2(this,$find_super(this,"inherited",$$inherited,!1,!0),"inherited",[sub_klass],$yield),$$("Singleton").$__init__(sub_klass)}),1)}($nesting[0],$nesting),function(self,$parent_nesting){var $nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return $def(self,"$__init__",(function(klass){return $send(klass,"instance_eval",[],(function $$1(){return(null==$$1.$$s?this:$$1.$$s).singleton__instance__=nil}),{$$arity:0,$$s:this}),$defs(klass,"$instance",(function(){return null==this.singleton__instance__&&(this.singleton__instance__=nil),$truthy(this.singleton__instance__)?this.singleton__instance__:this.singleton__instance__=this.$new()}),0),klass}),1),$def(self,"$included",(function $$included(klass){var $yield=$$included.$$p||nil;return delete $$included.$$p,$send2(this,$find_super(this,"included",$$included,!1,!0),"included",[klass],$yield),klass.$extend($$("SingletonClassMethods")),$$("Singleton").$__init__(klass)}),1)}(Opal.get_singleton_class($$("Singleton")),$nesting)}($nesting[0],$nesting)};
diff --git a/opal/master/singleton.min.js.gz b/opal/master/singleton.min.js.gz
index 1fe056a1..122b7c4f 100644
Binary files a/opal/master/singleton.min.js.gz and b/opal/master/singleton.min.js.gz differ
diff --git a/opal/master/stringio.js b/opal/master/stringio.js
index ecdb9117..bcdaf449 100644
--- a/opal/master/stringio.js
+++ b/opal/master/stringio.js
@@ -1,230 +1,104 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["stringio"] = function(Opal) {
-  function $rb_ge(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs >= rhs : lhs['$>='](rhs);
-  }
-  function $rb_gt(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs > rhs : lhs['$>'](rhs);
-  }
-  function $rb_plus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs + rhs : lhs['$+'](rhs);
-  }
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $truthy = Opal.truthy, $alias = Opal.alias, $gvars = Opal.gvars;
+Opal.modules["stringio"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $defs = Opal.defs, $send2 = Opal.send2, $find_super = Opal.find_super, $def = Opal.def, $eqeqeq = Opal.eqeqeq, $truthy = Opal.truthy, $rb_ge = Opal.rb_ge, $rb_gt = Opal.rb_gt, $rb_plus = Opal.rb_plus, $rb_minus = Opal.rb_minus, $eqeq = Opal.eqeq, $alias = Opal.alias;
 
-  Opal.add_stubs(['$include', '$new', '$call', '$close', '$attr_accessor', '$length', '$include?', '$!', '$check_readable', '$==', '$===', '$>=', '$raise', '$>', '$+', '$-', '$seek', '$enum_for', '$eof?', '$ord', '$[]', '$to_str', '$chomp', '$check_writable', '$String', '$write', '$closed_write?', '$closed_read?']);
+  Opal.add_stubs('new,call,close,attr_accessor,check_readable,==,length,===,>=,raise,>,+,-,seek,check_writable,String,[],eof?,write,read');
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'StringIO');
 
-    var $nesting = [self].concat($parent_nesting), $StringIO_open$1, $StringIO_initialize$2, $StringIO_eof$ques$3, $StringIO_seek$4, $StringIO_tell$5, $StringIO_rewind$6, $StringIO_each_byte$7, $StringIO_each_char$8, $StringIO_each$9, $StringIO_write$10, $StringIO_read$11, $StringIO_close$12, $StringIO_close_read$13, $StringIO_close_write$14, $StringIO_closed$ques$15, $StringIO_closed_read$ques$16, $StringIO_closed_write$ques$17, $StringIO_check_writable$18, $StringIO_check_readable$19;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-    self.$$prototype.position = self.$$prototype.string = self.$$prototype.closed = nil;
+    $proto.position = $proto.string = nil;
     
-    self.$include($$$($$($nesting, 'IO'), 'Readable'));
-    self.$include($$$($$($nesting, 'IO'), 'Writable'));
-    Opal.defs(self, '$open', $StringIO_open$1 = function $$open(string, mode) {
-      var $iter = $StringIO_open$1.$$p, block = $iter || nil, self = this, io = nil, res = nil;
+    $defs(self, '$open', function $$open(string, mode) {
+      var block = $$open.$$p || nil, self = this, io = nil, res = nil;
 
-      if ($iter) $StringIO_open$1.$$p = null;
+      delete $$open.$$p;
       
+      ;
       
-      if ($iter) $StringIO_open$1.$$p = null;;
+      if (string == null) string = "";;
       
-      if (string == null) {
-        string = "";
-      };
-      
-      if (mode == null) {
-        mode = nil;
-      };
+      if (mode == null) mode = nil;;
       io = self.$new(string, mode);
       res = block.$call(io);
       io.$close();
       return res;
-    }, $StringIO_open$1.$$arity = -1);
+    }, -1);
     self.$attr_accessor("string");
     
-    Opal.def(self, '$initialize', $StringIO_initialize$2 = function $$initialize(string, mode) {
-      var self = this, $ret_or_1 = nil, $ret_or_2 = nil;
+    $def(self, '$initialize', function $$initialize(string, mode) {
+      var $yield = $$initialize.$$p || nil, self = this;
 
+      delete $$initialize.$$p;
       
       
-      if (string == null) {
-        string = "";
-      };
+      if (string == null) string = "";;
       
-      if (mode == null) {
-        mode = "rw";
-      };
+      if (mode == null) mode = "rw";;
       self.string = string;
-      self.position = string.$length();
-      if ($truthy((function() {if ($truthy(($ret_or_1 = mode['$include?']("r")))) {
-        return mode['$include?']("w")['$!']()
-      } else {
-        return $ret_or_1
-      }; return nil; })())) {
-        return (self.closed = "write")
-      } else if ($truthy((function() {if ($truthy(($ret_or_2 = mode['$include?']("w")))) {
-        return mode['$include?']("r")['$!']()
-      } else {
-        return $ret_or_2
-      }; return nil; })())) {
-        return (self.closed = "read")
-      } else {
-        return nil
-      };
-    }, $StringIO_initialize$2.$$arity = -1);
+      self.position = 0;
+      return $send2(self, $find_super(self, 'initialize', $$initialize, false, true), 'initialize', [nil, mode], null);
+    }, -1);
     
-    Opal.def(self, '$eof?', $StringIO_eof$ques$3 = function() {
+    $def(self, '$eof?', function $StringIO_eof$ques$1() {
       var self = this;
 
       
       self.$check_readable();
       return self.position['$=='](self.string.$length());
-    }, $StringIO_eof$ques$3.$$arity = 0);
-    $alias(self, "eof", "eof?");
+    }, 0);
     
-    Opal.def(self, '$seek', $StringIO_seek$4 = function $$seek(pos, whence) {
-      var self = this, $case = nil;
+    $def(self, '$seek', function $$seek(pos, whence) {
+      var self = this, $ret_or_1 = nil;
 
       
       
-      if (whence == null) {
-        whence = $$$($$($nesting, 'IO'), 'SEEK_SET');
-      };
-      $case = whence;
-      if ($$$($$($nesting, 'IO'), 'SEEK_SET')['$===']($case)) {
-      if ($truthy($rb_ge(pos, 0))) {
+      if (whence == null) whence = $$$($$('IO'), 'SEEK_SET');;
+      self.read_buffer = "";
+      if ($eqeqeq($$$($$('IO'), 'SEEK_SET'), ($ret_or_1 = whence))) {
+        
+        if (!$truthy($rb_ge(pos, 0))) {
+          self.$raise($$$($$('Errno'), 'EINVAL'))
+        };
+        self.position = pos;
+      } else if ($eqeqeq($$$($$('IO'), 'SEEK_CUR'), $ret_or_1)) {
+        if ($truthy($rb_gt($rb_plus(self.position, pos), self.string.$length()))) {
+          self.position = self.string.$length()
+        } else {
+          self.position = $rb_plus(self.position, pos)
+        }
+      } else if ($eqeqeq($$$($$('IO'), 'SEEK_END'), $ret_or_1)) {
+        if ($truthy($rb_gt(pos, self.string.$length()))) {
+          self.position = 0
+        } else {
+          self.position = $rb_minus(self.position, pos)
+        }
       } else {
-        self.$raise($$$($$($nesting, 'Errno'), 'EINVAL'))
+        nil
       };
-      self.position = pos;}
-      else if ($$$($$($nesting, 'IO'), 'SEEK_CUR')['$===']($case)) {if ($truthy($rb_gt($rb_plus(self.position, pos), self.string.$length()))) {
-        self.position = self.string.$length()
-      } else {
-        self.position = $rb_plus(self.position, pos)
-      }}
-      else if ($$$($$($nesting, 'IO'), 'SEEK_END')['$===']($case)) {if ($truthy($rb_gt(pos, self.string.$length()))) {
-        self.position = 0
-      } else {
-        self.position = $rb_minus(self.position, pos)
-      }};
       return 0;
-    }, $StringIO_seek$4.$$arity = -2);
+    }, -2);
     
-    Opal.def(self, '$tell', $StringIO_tell$5 = function $$tell() {
+    $def(self, '$tell', function $$tell() {
       var self = this;
 
       return self.position
-    }, $StringIO_tell$5.$$arity = 0);
-    $alias(self, "pos", "tell");
-    $alias(self, "pos=", "seek");
+    }, 0);
     
-    Opal.def(self, '$rewind', $StringIO_rewind$6 = function $$rewind() {
+    $def(self, '$rewind', function $$rewind() {
       var self = this;
 
       return self.$seek(0)
-    }, $StringIO_rewind$6.$$arity = 0);
-    
-    Opal.def(self, '$each_byte', $StringIO_each_byte$7 = function $$each_byte() {
-      var $iter = $StringIO_each_byte$7.$$p, block = $iter || nil, $a, self = this, i = nil;
-
-      if ($iter) $StringIO_each_byte$7.$$p = null;
-      
-      
-      if ($iter) $StringIO_each_byte$7.$$p = null;;
-      if ($truthy(block)) {
-      } else {
-        return self.$enum_for("each_byte")
-      };
-      self.$check_readable();
-      i = self.position;
-      while (!($truthy(self['$eof?']()))) {
-        
-        block.$call(self.string['$[]'](i).$ord());
-        i = $rb_plus(i, 1);
-      };
-      return self;
-    }, $StringIO_each_byte$7.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$each_char', $StringIO_each_char$8 = function $$each_char() {
-      var $iter = $StringIO_each_char$8.$$p, block = $iter || nil, $a, self = this, i = nil;
-
-      if ($iter) $StringIO_each_char$8.$$p = null;
-      
-      
-      if ($iter) $StringIO_each_char$8.$$p = null;;
-      if ($truthy(block)) {
-      } else {
-        return self.$enum_for("each_char")
-      };
-      self.$check_readable();
-      i = self.position;
-      while (!($truthy(self['$eof?']()))) {
-        
-        block.$call(self.string['$[]'](i));
-        i = $rb_plus(i, 1);
-      };
-      return self;
-    }, $StringIO_each_char$8.$$arity = 0);
-    
-    Opal.def(self, '$each', $StringIO_each$9 = function $$each(separator) {
-      var $iter = $StringIO_each$9.$$p, $yield = $iter || nil, self = this, chomp_lines = nil;
-      if ($gvars["/"] == null) $gvars["/"] = nil;
-
-      if ($iter) $StringIO_each$9.$$p = null;
-      
-      
-      if (separator == null) {
-        separator = $gvars["/"];
-      };
-      if (($yield !== nil)) {
-      } else {
-        return self.$enum_for("each_line")
-      };
-      self.$check_readable();
-      chomp_lines = false;
-      if ($truthy($$$('::', 'Hash')['$==='](separator))) {
-        separator = (function() {if ($truthy((chomp_lines = separator['$[]']("chomp")))) {
-          return /\r?\n/
-        } else {
-          return $gvars["/"]
-        }; return nil; })()
-      } else if ($truthy(separator)) {
-        separator = separator.$to_str()
-      } else {
-        separator = undefined
-      };
-      
-      var str = self.string, stringLength = str.length;
-      if (self.position < stringLength) str = str.substr(self.position);
-      if (separator) {
-        var chomped = (str).$chomp(), trailing = str.length !== chomped.length, splitted = chomped.split(separator);
-        for (var i = 0, len = splitted.length; i < len; i++) {
-          var line = chomp_lines ? splitted[i] : (i < len - 1 || trailing ? splitted[i] + separator : splitted[i]);
-          Opal.yield1($yield, line);
-        }
-      } else if (separator === undefined) {
-        Opal.yield1($yield, str);
-      } else {
-        var m, re = /(.+(?:\n\n|$))\n*/g;
-        while ((m = re.exec(str))) Opal.yield1($yield, m[1]);
-      }
-      self.position = stringLength;
-    ;
-      return self;
-    }, $StringIO_each$9.$$arity = -1);
-    $alias(self, "each_line", "each");
-    
-    Opal.def(self, '$write', $StringIO_write$10 = function $$write(string) {
+    $def(self, '$write', function $$write(string) {
       var self = this, before = nil, after = nil;
 
       
       self.$check_writable();
+      self.read_buffer = "";
       string = self.$String(string);
-      if (self.string.$length()['$=='](self.position)) {
+      if ($eqeq(self.string.$length(), self.position)) {
         
         self.string = $rb_plus(self.string, string);
         return (self.position = $rb_plus(self.position, string.$length()));
@@ -235,110 +109,38 @@ Opal.modules["stringio"] = function(Opal) {
         self.string = $rb_plus($rb_plus(before, string), after);
         return (self.position = $rb_plus(self.position, string.$length()));
       };
-    }, $StringIO_write$10.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$read', $StringIO_read$11 = function $$read(length, outbuf) {
+    $def(self, '$read', function $$read(length, outbuf) {
       var self = this, string = nil, str = nil;
 
       
       
-      if (length == null) {
-        length = nil;
-      };
+      if (length == null) length = nil;;
       
-      if (outbuf == null) {
-        outbuf = nil;
-      };
+      if (outbuf == null) outbuf = nil;;
       self.$check_readable();
       if ($truthy(self['$eof?']())) {
-        return nil};
-      string = (function() {if ($truthy(length)) {
-        
-        str = self.string['$[]'](self.position, length);
-        self.position = $rb_plus(self.position, length);
-        return str;
-      } else {
-        
-        str = self.string['$[]'](Opal.Range.$new(self.position, -1, false));
-        self.position = self.string.$length();
-        return str;
-      }; return nil; })();
+        return nil
+      };
+      string = ($truthy(length) ? (((str = self.string['$[]'](self.position, length)), (self.position = $rb_plus(self.position, length)), ($truthy($rb_gt(self.position, self.string.$length())) ? ((self.position = self.string.$length())) : nil), str)) : (((str = self.string['$[]'](Opal.Range.$new(self.position, -1, false))), (self.position = self.string.$length()), str)));
       if ($truthy(outbuf)) {
         return outbuf.$write(string)
       } else {
         return string
       };
-    }, $StringIO_read$11.$$arity = -1);
-    
-    Opal.def(self, '$close', $StringIO_close$12 = function $$close() {
-      var self = this;
-
-      return (self.closed = "both")
-    }, $StringIO_close$12.$$arity = 0);
+    }, -1);
     
-    Opal.def(self, '$close_read', $StringIO_close_read$13 = function $$close_read() {
+    $def(self, '$sysread', function $$sysread(length) {
       var self = this;
 
-      if (self.closed['$==']("write")) {
-        return (self.closed = "both")
-      } else {
-        return (self.closed = "read")
-      }
-    }, $StringIO_close_read$13.$$arity = 0);
-    
-    Opal.def(self, '$close_write', $StringIO_close_write$14 = function $$close_write() {
-      var self = this;
-
-      if (self.closed['$==']("read")) {
-        return (self.closed = "both")
-      } else {
-        return (self.closed = "write")
-      }
-    }, $StringIO_close_write$14.$$arity = 0);
-    
-    Opal.def(self, '$closed?', $StringIO_closed$ques$15 = function() {
-      var self = this;
-
-      return self.closed['$==']("both")
-    }, $StringIO_closed$ques$15.$$arity = 0);
-    
-    Opal.def(self, '$closed_read?', $StringIO_closed_read$ques$16 = function() {
-      var self = this, $ret_or_3 = nil;
-
-      if ($truthy(($ret_or_3 = self.closed['$==']("read")))) {
-        return $ret_or_3
-      } else {
-        return self.closed['$==']("both")
-      }
-    }, $StringIO_closed_read$ques$16.$$arity = 0);
-    
-    Opal.def(self, '$closed_write?', $StringIO_closed_write$ques$17 = function() {
-      var self = this, $ret_or_4 = nil;
-
-      if ($truthy(($ret_or_4 = self.closed['$==']("write")))) {
-        return $ret_or_4
-      } else {
-        return self.closed['$==']("both")
-      }
-    }, $StringIO_closed_write$ques$17.$$arity = 0);
-    
-    Opal.def(self, '$check_writable', $StringIO_check_writable$18 = function $$check_writable() {
-      var self = this;
-
-      if ($truthy(self['$closed_write?']())) {
-        return self.$raise($$($nesting, 'IOError'), "not opened for writing")
-      } else {
-        return nil
-      }
-    }, $StringIO_check_writable$18.$$arity = 0);
-    return (Opal.def(self, '$check_readable', $StringIO_check_readable$19 = function $$check_readable() {
-      var self = this;
-
-      if ($truthy(self['$closed_read?']())) {
-        return self.$raise($$($nesting, 'IOError'), "not opened for reading")
-      } else {
-        return nil
-      }
-    }, $StringIO_check_readable$19.$$arity = 0), nil) && 'check_readable';
-  })($nesting[0], $$($nesting, 'IO'), $nesting)
+      
+      self.$check_readable();
+      return self.$read(length);
+    }, 1);
+    $alias(self, "eof", "eof?");
+    $alias(self, "pos", "tell");
+    $alias(self, "pos=", "seek");
+    return $alias(self, "readpartial", "read");
+  })($nesting[0], $$('IO'), $nesting)
 };
diff --git a/opal/master/stringio.min.js b/opal/master/stringio.min.js
index 45b7b344..72feceaf 100644
--- a/opal/master/stringio.min.js
+++ b/opal/master/stringio.min.js
@@ -1 +1 @@
-Opal.modules.stringio=function(Opal){function $rb_gt(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?rhs<lhs:lhs["$>"](rhs)}function $rb_plus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs+rhs:lhs["$+"](rhs)}function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}Opal.top;var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$klass=Opal.klass,$truthy=Opal.truthy,$alias=Opal.alias,$gvars=Opal.gvars;return Opal.add_stubs(["$include","$new","$call","$close","$attr_accessor","$length","$include?","$!","$check_readable","$==","$===","$>=","$raise","$>","$+","$-","$seek","$enum_for","$eof?","$ord","$[]","$to_str","$chomp","$check_writable","$String","$write","$closed_write?","$closed_read?"]),function($base,$StringIO_check_readable$19,$StringIO_check_writable$18){var $StringIO_open$1,$StringIO_each_byte$7,$StringIO_each_char$8,$StringIO_each$9,$StringIO_check_readable$19=$klass($base,$StringIO_check_readable$19,"StringIO"),$nesting=[$StringIO_check_readable$19].concat($StringIO_check_writable$18);return $StringIO_check_readable$19.$$prototype.position=$StringIO_check_readable$19.$$prototype.string=$StringIO_check_readable$19.$$prototype.closed=nil,$StringIO_check_readable$19.$include($$$($$($nesting,"IO"),"Readable")),$StringIO_check_readable$19.$include($$$($$($nesting,"IO"),"Writable")),Opal.defs($StringIO_check_readable$19,"$open",$StringIO_open$1=function(string,mode){var res,$iter=$StringIO_open$1.$$p,block=$iter||nil,io=nil;return $iter&&($StringIO_open$1.$$p=null),$iter&&($StringIO_open$1.$$p=null),null==string&&(string=""),null==mode&&(mode=nil),io=this.$new(string,mode),res=block.$call(io),io.$close(),res},$StringIO_open$1.$$arity=-1),$StringIO_check_readable$19.$attr_accessor("string"),Opal.def($StringIO_check_readable$19,"$initialize",$StringIO_check_writable$18=function(string,mode){var $ret_or_1=nil,$ret_or_2=nil;return null==string&&(string=""),null==mode&&(mode="rw"),this.string=string,this.position=string.$length(),$truthy($truthy($ret_or_1=mode["$include?"]("r"))?mode["$include?"]("w")["$!"]():$ret_or_1)?this.closed="write":$truthy($truthy($ret_or_2=mode["$include?"]("w"))?mode["$include?"]("r")["$!"]():$ret_or_2)?this.closed="read":nil},$StringIO_check_writable$18.$$arity=-1),Opal.def($StringIO_check_readable$19,"$eof?",$StringIO_check_writable$18=function(){return this.$check_readable(),this.position["$=="](this.string.$length())},$StringIO_check_writable$18.$$arity=0),$alias($StringIO_check_readable$19,"eof","eof?"),Opal.def($StringIO_check_readable$19,"$seek",$StringIO_check_writable$18=function(pos,lhs){var $case,rhs;return null==lhs&&(lhs=$$$($$($nesting,"IO"),"SEEK_SET")),$case=lhs,$$$($$($nesting,"IO"),"SEEK_SET")["$==="]($case)?($truthy((rhs=0,"number"==typeof(lhs=pos)&&"number"==typeof rhs?rhs<=lhs:lhs["$>="](rhs)))||this.$raise($$$($$($nesting,"Errno"),"EINVAL")),this.position=pos):$$$($$($nesting,"IO"),"SEEK_CUR")["$==="]($case)?$truthy($rb_gt($rb_plus(this.position,pos),this.string.$length()))?this.position=this.string.$length():this.position=$rb_plus(this.position,pos):$$$($$($nesting,"IO"),"SEEK_END")["$==="]($case)&&($truthy($rb_gt(pos,this.string.$length()))?this.position=0:this.position=$rb_minus(this.position,pos)),0},$StringIO_check_writable$18.$$arity=-2),Opal.def($StringIO_check_readable$19,"$tell",$StringIO_check_writable$18=function(){return this.position},$StringIO_check_writable$18.$$arity=0),$alias($StringIO_check_readable$19,"pos","tell"),$alias($StringIO_check_readable$19,"pos=","seek"),Opal.def($StringIO_check_readable$19,"$rewind",$StringIO_check_writable$18=function(){return this.$seek(0)},$StringIO_check_writable$18.$$arity=0),Opal.def($StringIO_check_readable$19,"$each_byte",$StringIO_each_byte$7=function(){var $iter=$StringIO_each_byte$7.$$p,block=$iter||nil,i=nil;if($iter&&($StringIO_each_byte$7.$$p=null),$iter&&($StringIO_each_byte$7.$$p=null),!$truthy(block))return this.$enum_for("each_byte");for(this.$check_readable(),i=this.position;!$truthy(this["$eof?"]());)block.$call(this.string["$[]"](i).$ord()),i=$rb_plus(i,1);return this},$StringIO_each_byte$7.$$arity=0),Opal.def($StringIO_check_readable$19,"$each_char",$StringIO_each_char$8=function(){var $iter=$StringIO_each_char$8.$$p,block=$iter||nil,i=nil;if($iter&&($StringIO_each_char$8.$$p=null),$iter&&($StringIO_each_char$8.$$p=null),!$truthy(block))return this.$enum_for("each_char");for(this.$check_readable(),i=this.position;!$truthy(this["$eof?"]());)block.$call(this.string["$[]"](i)),i=$rb_plus(i,1);return this},$StringIO_each_char$8.$$arity=0),Opal.def($StringIO_check_readable$19,"$each",$StringIO_each$9=function(separator){var chomped=$StringIO_each$9.$$p,$yield=chomped||nil,chomp_lines=nil;if(null==$gvars["/"]&&($gvars["/"]=nil),chomped&&($StringIO_each$9.$$p=null),null==separator&&(separator=$gvars["/"]),$yield===nil)return this.$enum_for("each_line");this.$check_readable(),chomp_lines=!1,separator=$truthy($$$("::","Hash")["$==="](separator))?$truthy(chomp_lines=separator["$[]"]("chomp"))?/\r?\n/:$gvars["/"]:$truthy(separator)?separator.$to_str():void 0;var str=this.string,stringLength=str.length;if(this.position<stringLength&&(str=str.substr(this.position)),separator)for(var chomped=str.$chomp(),trailing=str.length!==chomped.length,splitted=chomped.split(separator),i=0,len=splitted.length;i<len;i++){var line=!chomp_lines&&(i<len-1||trailing)?splitted[i]+separator:splitted[i];Opal.yield1($yield,line)}else if(void 0===separator)Opal.yield1($yield,str);else for(var m,re=/(.+(?:\n\n|$))\n*/g;m=re.exec(str);)Opal.yield1($yield,m[1]);return this.position=stringLength,this},$StringIO_each$9.$$arity=-1),$alias($StringIO_check_readable$19,"each_line","each"),Opal.def($StringIO_check_readable$19,"$write",$StringIO_check_writable$18=function(string){var before,after;return this.$check_writable(),string=this.$String(string),this.string.$length()["$=="](this.position)?this.string=$rb_plus(this.string,string):(before=this.string["$[]"](Opal.Range.$new(0,$rb_minus(this.position,1),!1)),after=this.string["$[]"](Opal.Range.$new($rb_plus(this.position,string.$length()),-1,!1)),this.string=$rb_plus($rb_plus(before,string),after)),this.position=$rb_plus(this.position,string.$length())},$StringIO_check_writable$18.$$arity=1),Opal.def($StringIO_check_readable$19,"$read",$StringIO_check_writable$18=function(length,outbuf){var self=this,string=nil,str=nil;return null==length&&(length=nil),null==outbuf&&(outbuf=nil),self.$check_readable(),$truthy(self["$eof?"]())?nil:($truthy(length)?(str=self.string["$[]"](self.position,length),self.position=$rb_plus(self.position,length)):(str=self.string["$[]"](Opal.Range.$new(self.position,-1,!1)),self.position=self.string.$length()),string=str,$truthy(outbuf)?outbuf.$write(string):string)},$StringIO_check_writable$18.$$arity=-1),Opal.def($StringIO_check_readable$19,"$close",$StringIO_check_writable$18=function(){return this.closed="both"},$StringIO_check_writable$18.$$arity=0),Opal.def($StringIO_check_readable$19,"$close_read",$StringIO_check_writable$18=function(){return this.closed["$=="]("write")?this.closed="both":this.closed="read"},$StringIO_check_writable$18.$$arity=0),Opal.def($StringIO_check_readable$19,"$close_write",$StringIO_check_writable$18=function(){return this.closed["$=="]("read")?this.closed="both":this.closed="write"},$StringIO_check_writable$18.$$arity=0),Opal.def($StringIO_check_readable$19,"$closed?",$StringIO_check_writable$18=function(){return this.closed["$=="]("both")},$StringIO_check_writable$18.$$arity=0),Opal.def($StringIO_check_readable$19,"$closed_read?",$StringIO_check_writable$18=function(){var $ret_or_3;return $truthy($ret_or_3=this.closed["$=="]("read"))?$ret_or_3:this.closed["$=="]("both")},$StringIO_check_writable$18.$$arity=0),Opal.def($StringIO_check_readable$19,"$closed_write?",$StringIO_check_writable$18=function(){var $ret_or_4;return $truthy($ret_or_4=this.closed["$=="]("write"))?$ret_or_4:this.closed["$=="]("both")},$StringIO_check_writable$18.$$arity=0),Opal.def($StringIO_check_readable$19,"$check_writable",$StringIO_check_writable$18=function(){return $truthy(this["$closed_write?"]())?this.$raise($$($nesting,"IOError"),"not opened for writing"):nil},$StringIO_check_writable$18.$$arity=0),Opal.def($StringIO_check_readable$19,"$check_readable",$StringIO_check_readable$19=function(){return $truthy(this["$closed_read?"]())?this.$raise($$($nesting,"IOError"),"not opened for reading"):nil},$StringIO_check_readable$19.$$arity=0),nil&&"check_readable"}($nesting[0],$$($nesting,"IO"),$nesting)};
+Opal.modules.stringio=function(Opal){var $nesting=[],$$=Opal.$r($nesting),nil=Opal.nil,$$$=Opal.$$$,$klass=Opal.klass,$defs=Opal.defs,$send2=Opal.send2,$find_super=Opal.find_super,$def=Opal.def,$eqeqeq=Opal.eqeqeq,$truthy=Opal.truthy,$rb_ge=Opal.rb_ge,$rb_gt=Opal.rb_gt,$rb_plus=Opal.rb_plus,$rb_minus=Opal.rb_minus,$eqeq=Opal.eqeq,$alias=Opal.alias;return Opal.add_stubs("new,call,close,attr_accessor,check_readable,==,length,===,>=,raise,>,+,-,seek,check_writable,String,[],eof?,write,read"),function($base,$super,$parent_nesting){var self=$klass($base,$super,"StringIO"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;return $proto.position=$proto.string=nil,$defs(self,"$open",(function $$open(string,mode){var res,block=$$open.$$p||nil,io=nil;return delete $$open.$$p,null==string&&(string=""),null==mode&&(mode=nil),io=this.$new(string,mode),res=block.$call(io),io.$close(),res}),-1),self.$attr_accessor("string"),$def(self,"$initialize",(function $$initialize(string,mode){return delete $$initialize.$$p,null==string&&(string=""),null==mode&&(mode="rw"),this.string=string,this.position=0,$send2(this,$find_super(this,"initialize",$$initialize,!1,!0),"initialize",[nil,mode],null)}),-1),$def(self,"$eof?",(function(){return this.$check_readable(),this.position["$=="](this.string.$length())}),0),$def(self,"$seek",(function(pos,whence){var $ret_or_1;return null==whence&&(whence=$$$($$("IO"),"SEEK_SET")),this.read_buffer="",$eqeqeq($$$($$("IO"),"SEEK_SET"),$ret_or_1=whence)?($truthy($rb_ge(pos,0))||this.$raise($$$($$("Errno"),"EINVAL")),this.position=pos):$eqeqeq($$$($$("IO"),"SEEK_CUR"),$ret_or_1)?$truthy($rb_gt($rb_plus(this.position,pos),this.string.$length()))?this.position=this.string.$length():this.position=$rb_plus(this.position,pos):$eqeqeq($$$($$("IO"),"SEEK_END"),$ret_or_1)&&($truthy($rb_gt(pos,this.string.$length()))?this.position=0:this.position=$rb_minus(this.position,pos)),0}),-2),$def(self,"$tell",(function(){return this.position}),0),$def(self,"$rewind",(function(){return this.$seek(0)}),0),$def(self,"$write",(function(string){var before=nil,after=nil;return this.$check_writable(),this.read_buffer="",string=this.$String(string),$eqeq(this.string.$length(),this.position)?(this.string=$rb_plus(this.string,string),this.position=$rb_plus(this.position,string.$length())):(before=this.string["$[]"](Opal.Range.$new(0,$rb_minus(this.position,1),!1)),after=this.string["$[]"](Opal.Range.$new($rb_plus(this.position,string.$length()),-1,!1)),this.string=$rb_plus($rb_plus(before,string),after),this.position=$rb_plus(this.position,string.$length()))}),1),$def(self,"$read",(function(length,outbuf){var string,str=nil;return null==length&&(length=nil),null==outbuf&&(outbuf=nil),this.$check_readable(),$truthy(this["$eof?"]())?nil:(string=$truthy(length)?(str=this.string["$[]"](this.position,length),this.position=$rb_plus(this.position,length),$truthy($rb_gt(this.position,this.string.$length()))&&(this.position=this.string.$length()),str):(str=this.string["$[]"](Opal.Range.$new(this.position,-1,!1)),this.position=this.string.$length(),str),$truthy(outbuf)?outbuf.$write(string):string)}),-1),$def(self,"$sysread",(function(length){return this.$check_readable(),this.$read(length)}),1),$alias(self,"eof","eof?"),$alias(self,"pos","tell"),$alias(self,"pos=","seek"),$alias(self,"readpartial","read")}($nesting[0],$$("IO"),$nesting)};
diff --git a/opal/master/stringio.min.js.gz b/opal/master/stringio.min.js.gz
index 4fb61ce5..9d8ffb76 100644
Binary files a/opal/master/stringio.min.js.gz and b/opal/master/stringio.min.js.gz differ
diff --git a/opal/master/strscan.js b/opal/master/strscan.js
index a6fedde4..fb73a810 100644
--- a/opal/master/strscan.js
+++ b/opal/master/strscan.js
@@ -1,22 +1,17 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["strscan"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $alias = Opal.alias, $truthy = Opal.truthy, $send = Opal.send;
-
-  Opal.add_stubs(['$attr_reader', '$anchor', '$empty?', '$===', '$to_s', '$coerce_to!', '$scan_until', '$length', '$size', '$rest', '$pos=', '$-', '$private']);
+Opal.modules["strscan"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $klass = Opal.klass, $def = Opal.def, $truthy = Opal.truthy, $eqeqeq = Opal.eqeqeq, $Opal = Opal.Opal, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $alias = Opal.alias;
+
+  Opal.add_stubs('attr_reader,anchor,empty?,===,to_s,coerce_to!,scan_until,length,size,rest,pos=,-,private');
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'StringScanner');
 
-    var $nesting = [self].concat($parent_nesting), $StringScanner_initialize$1, $StringScanner_beginning_of_line$ques$2, $StringScanner_scan$3, $StringScanner_scan_until$4, $StringScanner_$$$5, $StringScanner_check$6, $StringScanner_check_until$7, $StringScanner_peek$8, $StringScanner_eos$ques$9, $StringScanner_exist$ques$10, $StringScanner_skip$11, $StringScanner_skip_until$12, $StringScanner_get_byte$13, $StringScanner_match$ques$14, $StringScanner_pos$eq$15, $StringScanner_matched_size$16, $StringScanner_post_match$17, $StringScanner_pre_match$18, $StringScanner_reset$19, $StringScanner_rest$20, $StringScanner_rest$ques$21, $StringScanner_rest_size$22, $StringScanner_terminate$23, $StringScanner_unscan$24, $StringScanner_anchor$25;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-    self.$$prototype.pos = self.$$prototype.string = self.$$prototype.working = self.$$prototype.matched = self.$$prototype.prev_pos = self.$$prototype.match = nil;
+    $proto.pos = $proto.string = $proto.working = $proto.matched = $proto.prev_pos = $proto.match = nil;
     
-    self.$attr_reader("pos");
-    self.$attr_reader("matched");
+    self.$attr_reader("pos", "matched");
     
-    Opal.def(self, '$initialize', $StringScanner_initialize$1 = function $$initialize(string) {
+    $def(self, '$initialize', function $$initialize(string) {
       var self = this;
 
       
@@ -25,17 +20,16 @@ Opal.modules["strscan"] = function(Opal) {
       self.matched = nil;
       self.working = string;
       return (self.match = []);
-    }, $StringScanner_initialize$1.$$arity = 1);
+    }, 1);
     self.$attr_reader("string");
     
-    Opal.def(self, '$beginning_of_line?', $StringScanner_beginning_of_line$ques$2 = function() {
+    $def(self, '$beginning_of_line?', function $StringScanner_beginning_of_line$ques$1() {
       var self = this;
 
       return self.pos === 0 || self.string.charAt(self.pos - 1) === "\n"
-    }, $StringScanner_beginning_of_line$ques$2.$$arity = 0);
-    $alias(self, "bol?", "beginning_of_line?");
+    }, 0);
     
-    Opal.def(self, '$scan', $StringScanner_scan$3 = function $$scan(pattern) {
+    $def(self, '$scan', function $$scan(pattern) {
       var self = this;
 
       
@@ -65,9 +59,9 @@ Opal.modules["strscan"] = function(Opal) {
         return nil;
       }
     ;
-    }, $StringScanner_scan$3.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$scan_until', $StringScanner_scan_until$4 = function $$scan_until(pattern) {
+    $def(self, '$scan_until', function $$scan_until(pattern) {
       var self = this;
 
       
@@ -100,18 +94,20 @@ Opal.modules["strscan"] = function(Opal) {
         return self.matched;
       }
     ;
-    }, $StringScanner_scan_until$4.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$[]', $StringScanner_$$$5 = function(idx) {
-      var self = this, $case = nil;
+    $def(self, '$[]', function $StringScanner_$$$2(idx) {
+      var self = this, $ret_or_1 = nil;
 
       
       if ($truthy(self.match['$empty?']())) {
-        return nil};
-      $case = idx;
-      if ($$($nesting, 'Symbol')['$===']($case)) {idx = idx.$to_s()}
-      else if ($$($nesting, 'String')['$===']($case)) {nil}
-      else {idx = $$($nesting, 'Opal')['$coerce_to!'](idx, $$($nesting, 'Integer'), "to_int")};
+        return nil
+      };
+      if ($eqeqeq($$('Symbol'), ($ret_or_1 = idx))) {
+        idx = idx.$to_s()
+      } else if (!$eqeqeq($$('String'), $ret_or_1)) {
+        idx = $Opal['$coerce_to!'](idx, $$('Integer'), "to_int")
+      };
       
       var match = self.match;
 
@@ -129,9 +125,9 @@ Opal.modules["strscan"] = function(Opal) {
 
       return match[idx];
     ;
-    }, $StringScanner_$$$5.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$check', $StringScanner_check$6 = function $$check(pattern) {
+    $def(self, '$check', function $$check(pattern) {
       var self = this;
 
       
@@ -145,9 +141,9 @@ Opal.modules["strscan"] = function(Opal) {
 
       return self.matched = result[0];
     ;
-    }, $StringScanner_check$6.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$check_until', $StringScanner_check_until$7 = function $$check_until(pattern) {
+    $def(self, '$check_until', function $$check_until(pattern) {
       var self = this;
 
       
@@ -166,21 +162,21 @@ Opal.modules["strscan"] = function(Opal) {
 
       return result;
     
-    }, $StringScanner_check_until$7.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$peek', $StringScanner_peek$8 = function $$peek(length) {
+    $def(self, '$peek', function $$peek(length) {
       var self = this;
 
       return self.working.substring(0, length)
-    }, $StringScanner_peek$8.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$eos?', $StringScanner_eos$ques$9 = function() {
+    $def(self, '$eos?', function $StringScanner_eos$ques$3() {
       var self = this;
 
       return self.working.length === 0
-    }, $StringScanner_eos$ques$9.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$exist?', $StringScanner_exist$ques$10 = function(pattern) {
+    $def(self, '$exist?', function $StringScanner_exist$ques$4(pattern) {
       var self = this;
 
       
@@ -196,9 +192,9 @@ Opal.modules["strscan"] = function(Opal) {
         return result.index + 1;
       }
     
-    }, $StringScanner_exist$ques$10.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$skip', $StringScanner_skip$11 = function $$skip(pattern) {
+    $def(self, '$skip', function $$skip(pattern) {
       var self = this;
 
       
@@ -223,9 +219,9 @@ Opal.modules["strscan"] = function(Opal) {
         return match_len;
       }
     ;
-    }, $StringScanner_skip$11.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$skip_until', $StringScanner_skip_until$12 = function $$skip_until(pattern) {
+    $def(self, '$skip_until', function $$skip_until(pattern) {
       var self = this;
 
       
@@ -240,9 +236,9 @@ Opal.modules["strscan"] = function(Opal) {
         return result.length;
       }
     
-    }, $StringScanner_skip_until$12.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$get_byte', $StringScanner_get_byte$13 = function $$get_byte() {
+    $def(self, '$get_byte', function $$get_byte() {
       var self = this;
 
       
@@ -260,10 +256,9 @@ Opal.modules["strscan"] = function(Opal) {
 
       return result;
     
-    }, $StringScanner_get_byte$13.$$arity = 0);
-    $alias(self, "getch", "get_byte");
+    }, 0);
     
-    Opal.def(self, '$match?', $StringScanner_match$ques$14 = function(pattern) {
+    $def(self, '$match?', function $StringScanner_match$ques$5(pattern) {
       var self = this;
 
       
@@ -280,9 +275,9 @@ Opal.modules["strscan"] = function(Opal) {
         return result[0].length;
       }
     ;
-    }, $StringScanner_match$ques$14.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$pos=', $StringScanner_pos$eq$15 = function(pos) {
+    $def(self, '$pos=', function $StringScanner_pos$eq$6(pos) {
       var self = this;
 
       
@@ -293,9 +288,9 @@ Opal.modules["strscan"] = function(Opal) {
     ;
       self.pos = pos;
       return (self.working = self.string.slice(pos));
-    }, $StringScanner_pos$eq$15.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$matched_size', $StringScanner_matched_size$16 = function $$matched_size() {
+    $def(self, '$matched_size', function $$matched_size() {
       var self = this;
 
       
@@ -305,9 +300,9 @@ Opal.modules["strscan"] = function(Opal) {
 
       return self.matched.length
     
-    }, $StringScanner_matched_size$16.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$post_match', $StringScanner_post_match$17 = function $$post_match() {
+    $def(self, '$post_match', function $$post_match() {
       var self = this;
 
       
@@ -317,9 +312,9 @@ Opal.modules["strscan"] = function(Opal) {
 
       return self.string.substr(self.pos);
     
-    }, $StringScanner_post_match$17.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$pre_match', $StringScanner_pre_match$18 = function $$pre_match() {
+    $def(self, '$pre_match', function $$pre_match() {
       var self = this;
 
       
@@ -329,47 +324,47 @@ Opal.modules["strscan"] = function(Opal) {
 
       return self.string.substr(0, self.prev_pos);
     
-    }, $StringScanner_pre_match$18.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$reset', $StringScanner_reset$19 = function $$reset() {
+    $def(self, '$reset', function $$reset() {
       var self = this;
 
       
       self.working = self.string;
       self.matched = nil;
       return (self.pos = 0);
-    }, $StringScanner_reset$19.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$rest', $StringScanner_rest$20 = function $$rest() {
+    $def(self, '$rest', function $$rest() {
       var self = this;
 
       return self.working
-    }, $StringScanner_rest$20.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$rest?', $StringScanner_rest$ques$21 = function() {
+    $def(self, '$rest?', function $StringScanner_rest$ques$7() {
       var self = this;
 
       return self.working.length !== 0
-    }, $StringScanner_rest$ques$21.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$rest_size', $StringScanner_rest_size$22 = function $$rest_size() {
+    $def(self, '$rest_size', function $$rest_size() {
       var self = this;
 
       return self.$rest().$size()
-    }, $StringScanner_rest_size$22.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$terminate', $StringScanner_terminate$23 = function $$terminate() {
+    $def(self, '$terminate', function $$terminate() {
       var self = this, $writer = nil;
 
       
       self.match = nil;
       
       $writer = [self.string.$length()];
-      $send(self, 'pos=', Opal.to_a($writer));
+      $send(self, 'pos=', $to_a($writer));
       return $writer[$rb_minus($writer["length"], 1)];;
-    }, $StringScanner_terminate$23.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$unscan', $StringScanner_unscan$24 = function $$unscan() {
+    $def(self, '$unscan', function $$unscan() {
       var self = this;
 
       
@@ -377,16 +372,17 @@ Opal.modules["strscan"] = function(Opal) {
       self.prev_pos = nil;
       self.match = nil;
       return self;
-    }, $StringScanner_unscan$24.$$arity = 0);
+    }, 0);
+    $alias(self, "bol?", "beginning_of_line?");
+    $alias(self, "getch", "get_byte");
     self.$private();
-    return (Opal.def(self, '$anchor', $StringScanner_anchor$25 = function $$anchor(pattern) {
-      var self = this;
-
+    return $def(self, '$anchor', function $$anchor(pattern) {
+      
       
       var flags = pattern.toString().match(/\/([^\/]+)$/);
       flags = flags ? flags[1] : undefined;
       return new RegExp('^(?:' + pattern.source + ')', flags);
     
-    }, $StringScanner_anchor$25.$$arity = 1), nil) && 'anchor';
+    }, 1);
   })($nesting[0], null, $nesting)
 };
diff --git a/opal/master/strscan.min.js b/opal/master/strscan.min.js
index 4ee738d5..9693eaab 100644
--- a/opal/master/strscan.min.js
+++ b/opal/master/strscan.min.js
@@ -1 +1 @@
-Opal.modules.strscan=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$klass=Opal.klass,$alias=Opal.alias,$truthy=Opal.truthy,$send=Opal.send;return Opal.add_stubs(["$attr_reader","$anchor","$empty?","$===","$to_s","$coerce_to!","$scan_until","$length","$size","$rest","$pos=","$-","$private"]),function($StringScanner_anchor$25,$StringScanner_unscan$24){var $StringScanner_anchor$25=$klass($StringScanner_anchor$25,null,"StringScanner"),$nesting=[$StringScanner_anchor$25].concat($StringScanner_unscan$24);return $StringScanner_anchor$25.$$prototype.pos=$StringScanner_anchor$25.$$prototype.string=$StringScanner_anchor$25.$$prototype.working=$StringScanner_anchor$25.$$prototype.matched=$StringScanner_anchor$25.$$prototype.prev_pos=$StringScanner_anchor$25.$$prototype.match=nil,$StringScanner_anchor$25.$attr_reader("pos"),$StringScanner_anchor$25.$attr_reader("matched"),Opal.def($StringScanner_anchor$25,"$initialize",$StringScanner_unscan$24=function(string){return this.string=string,this.pos=0,this.matched=nil,this.working=string,this.match=[]},$StringScanner_unscan$24.$$arity=1),$StringScanner_anchor$25.$attr_reader("string"),Opal.def($StringScanner_anchor$25,"$beginning_of_line?",$StringScanner_unscan$24=function(){return 0===this.pos||"\n"===this.string.charAt(this.pos-1)},$StringScanner_unscan$24.$$arity=0),$alias($StringScanner_anchor$25,"bol?","beginning_of_line?"),Opal.def($StringScanner_anchor$25,"$scan",$StringScanner_unscan$24=function(result){result=(result=this.$anchor(result)).exec(this.working);return null==result?this.matched=nil:"object"==typeof result?(this.prev_pos=this.pos,this.pos+=result[0].length,this.working=this.working.substring(result[0].length),this.matched=result[0],(this.match=result)[0]):"string"==typeof result?(this.pos+=result.length,this.working=this.working.substring(result.length),result):nil},$StringScanner_unscan$24.$$arity=1),Opal.def($StringScanner_anchor$25,"$scan_until",$StringScanner_unscan$24=function(pattern){pattern=this.$anchor(pattern);for(var result,pos=this.pos,working=this.working;;){if(result=pattern.exec(working),pos+=1,working=working.substr(1),null!=result)return this.matched=this.string.substr(this.pos,pos-this.pos-1+result[0].length),this.match=result,this.prev_pos=pos-1,this.pos=pos,this.working=working.substr(result[0].length),this.matched;if(0===working.length)return this.match=[],this.matched=nil}},$StringScanner_unscan$24.$$arity=1),Opal.def($StringScanner_anchor$25,"$[]",$StringScanner_unscan$24=function(idx){if($truthy(this.match["$empty?"]()))return nil;match=idx,$$($nesting,"Symbol")["$==="](match)?idx=idx.$to_s():$$($nesting,"String")["$==="](match)||(idx=$$($nesting,"Opal")["$coerce_to!"](idx,$$($nesting,"Integer"),"to_int"));var match=this.match;return idx<0&&(idx+=match.length),idx<0||idx>=match.length||null==match[idx]?nil:match[idx]},$StringScanner_unscan$24.$$arity=1),Opal.def($StringScanner_anchor$25,"$check",$StringScanner_unscan$24=function(result){result=(result=this.$anchor(result)).exec(this.working);return this.matched=null==result?nil:result[0]},$StringScanner_unscan$24.$$arity=1),Opal.def($StringScanner_anchor$25,"$check_until",$StringScanner_unscan$24=function(result){var prev_pos=this.prev_pos,pos=this.pos,result=this.$scan_until(result);return result!==nil&&(this.matched=result.substr(-1),this.working=this.string.substr(pos)),this.prev_pos=prev_pos,this.pos=pos,result},$StringScanner_unscan$24.$$arity=1),Opal.def($StringScanner_anchor$25,"$peek",$StringScanner_unscan$24=function(length){return this.working.substring(0,length)},$StringScanner_unscan$24.$$arity=1),Opal.def($StringScanner_anchor$25,"$eos?",$StringScanner_unscan$24=function(){return 0===this.working.length},$StringScanner_unscan$24.$$arity=0),Opal.def($StringScanner_anchor$25,"$exist?",$StringScanner_unscan$24=function(result){result=result.exec(this.working);return null==result?nil:0==result.index?0:result.index+1},$StringScanner_unscan$24.$$arity=1),Opal.def($StringScanner_anchor$25,"$skip",$StringScanner_unscan$24=function(match_len){var result=(match_len=this.$anchor(match_len)).exec(this.working);if(null==result)return this.match=[],this.matched=nil;var match_str=result[0],match_len=match_str.length;return this.matched=match_str,this.match=result,this.prev_pos=this.pos,this.pos+=match_len,this.working=this.working.substring(match_len),match_len},$StringScanner_unscan$24.$$arity=1),Opal.def($StringScanner_anchor$25,"$skip_until",$StringScanner_unscan$24=function(result){result=this.$scan_until(result);return result===nil?nil:(this.matched=result.substr(-1),result.length)},$StringScanner_unscan$24.$$arity=1),Opal.def($StringScanner_anchor$25,"$get_byte",$StringScanner_unscan$24=function(){var result=nil;return this.pos<this.string.length?(this.prev_pos=this.pos,this.pos+=1,result=this.matched=this.working.substring(0,1),this.working=this.working.substring(1)):this.matched=nil,result},$StringScanner_unscan$24.$$arity=0),$alias($StringScanner_anchor$25,"getch","get_byte"),Opal.def($StringScanner_anchor$25,"$match?",$StringScanner_unscan$24=function(result){result=(result=this.$anchor(result)).exec(this.working);return null==result?nil:(this.prev_pos=this.pos,result[0].length)},$StringScanner_unscan$24.$$arity=1),Opal.def($StringScanner_anchor$25,"$pos=",$StringScanner_unscan$24=function(pos){return pos<0&&(pos+=this.string.$length()),this.pos=pos,this.working=this.string.slice(pos)},$StringScanner_unscan$24.$$arity=1),Opal.def($StringScanner_anchor$25,"$matched_size",$StringScanner_unscan$24=function(){return this.matched===nil?nil:this.matched.length},$StringScanner_unscan$24.$$arity=0),Opal.def($StringScanner_anchor$25,"$post_match",$StringScanner_unscan$24=function(){return this.matched===nil?nil:this.string.substr(this.pos)},$StringScanner_unscan$24.$$arity=0),Opal.def($StringScanner_anchor$25,"$pre_match",$StringScanner_unscan$24=function(){return this.matched===nil?nil:this.string.substr(0,this.prev_pos)},$StringScanner_unscan$24.$$arity=0),Opal.def($StringScanner_anchor$25,"$reset",$StringScanner_unscan$24=function(){return this.working=this.string,this.matched=nil,this.pos=0},$StringScanner_unscan$24.$$arity=0),Opal.def($StringScanner_anchor$25,"$rest",$StringScanner_unscan$24=function(){return this.working},$StringScanner_unscan$24.$$arity=0),Opal.def($StringScanner_anchor$25,"$rest?",$StringScanner_unscan$24=function(){return 0!==this.working.length},$StringScanner_unscan$24.$$arity=0),Opal.def($StringScanner_anchor$25,"$rest_size",$StringScanner_unscan$24=function(){return this.$rest().$size()},$StringScanner_unscan$24.$$arity=0),Opal.def($StringScanner_anchor$25,"$terminate",$StringScanner_unscan$24=function(){var rhs,lhs=nil;return this.match=nil,lhs=[this.string.$length()],$send(this,"pos=",Opal.to_a(lhs)),lhs[rhs=1,"number"==typeof(lhs=lhs.length)&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)]},$StringScanner_unscan$24.$$arity=0),Opal.def($StringScanner_anchor$25,"$unscan",$StringScanner_unscan$24=function(){return this.pos=this.prev_pos,this.prev_pos=nil,this.match=nil,this},$StringScanner_unscan$24.$$arity=0),$StringScanner_anchor$25.$private(),Opal.def($StringScanner_anchor$25,"$anchor",$StringScanner_anchor$25=function(pattern){var flags=(flags=pattern.toString().match(/\/([^\/]+)$/))?flags[1]:void 0;return new RegExp("^(?:"+pattern.source+")",flags)},$StringScanner_anchor$25.$$arity=1),nil&&"anchor"}($nesting[0],$nesting)};
+Opal.modules.strscan=function(Opal){var $nesting=[],nil=Opal.nil,$klass=Opal.klass,$def=Opal.def,$truthy=Opal.truthy,$eqeqeq=Opal.eqeqeq,$Opal=Opal.Opal,$send=Opal.send,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$alias=Opal.alias;return Opal.add_stubs("attr_reader,anchor,empty?,===,to_s,coerce_to!,scan_until,length,size,rest,pos=,-,private"),function($base,$super,$parent_nesting){var self=$klass($base,null,"StringScanner"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;return $proto.pos=$proto.string=$proto.working=$proto.matched=$proto.prev_pos=$proto.match=nil,self.$attr_reader("pos","matched"),$def(self,"$initialize",(function(string){return this.string=string,this.pos=0,this.matched=nil,this.working=string,this.match=[]}),1),self.$attr_reader("string"),$def(self,"$beginning_of_line?",(function(){return 0===this.pos||"\n"===this.string.charAt(this.pos-1)}),0),$def(self,"$scan",(function(pattern){var result=(pattern=this.$anchor(pattern)).exec(this.working);return null==result?this.matched=nil:"object"==typeof result?(this.prev_pos=this.pos,this.pos+=result[0].length,this.working=this.working.substring(result[0].length),this.matched=result[0],this.match=result,result[0]):"string"==typeof result?(this.pos+=result.length,this.working=this.working.substring(result.length),result):nil}),1),$def(self,"$scan_until",(function(pattern){pattern=this.$anchor(pattern);for(var result,pos=this.pos,working=this.working;;){if(result=pattern.exec(working),pos+=1,working=working.substr(1),null!=result)return this.matched=this.string.substr(this.pos,pos-this.pos-1+result[0].length),this.match=result,this.prev_pos=pos-1,this.pos=pos,this.working=working.substr(result[0].length),this.matched;if(0===working.length)return this.match=[],this.matched=nil}}),1),$def(self,"$[]",(function(idx){var $ret_or_1;if($truthy(this.match["$empty?"]()))return nil;$eqeqeq($$("Symbol"),$ret_or_1=idx)?idx=idx.$to_s():$eqeqeq($$("String"),$ret_or_1)||(idx=$Opal["$coerce_to!"](idx,$$("Integer"),"to_int"));var match=this.match;return idx<0&&(idx+=match.length),idx<0||idx>=match.length||null==match[idx]?nil:match[idx]}),1),$def(self,"$check",(function(pattern){var result=(pattern=this.$anchor(pattern)).exec(this.working);return this.matched=null==result?nil:result[0]}),1),$def(self,"$check_until",(function(pattern){var prev_pos=this.prev_pos,pos=this.pos,result=this.$scan_until(pattern);return result!==nil&&(this.matched=result.substr(-1),this.working=this.string.substr(pos)),this.prev_pos=prev_pos,this.pos=pos,result}),1),$def(self,"$peek",(function(length){return this.working.substring(0,length)}),1),$def(self,"$eos?",(function(){return 0===this.working.length}),0),$def(self,"$exist?",(function(pattern){var result=pattern.exec(this.working);return null==result?nil:0==result.index?0:result.index+1}),1),$def(self,"$skip",(function(pattern){var result=(pattern=this.$anchor(pattern)).exec(this.working);if(null==result)return this.match=[],this.matched=nil;var match_str=result[0],match_len=match_str.length;return this.matched=match_str,this.match=result,this.prev_pos=this.pos,this.pos+=match_len,this.working=this.working.substring(match_len),match_len}),1),$def(self,"$skip_until",(function(pattern){var result=this.$scan_until(pattern);return result===nil?nil:(this.matched=result.substr(-1),result.length)}),1),$def(self,"$get_byte",(function(){var result=nil;return this.pos<this.string.length?(this.prev_pos=this.pos,this.pos+=1,result=this.matched=this.working.substring(0,1),this.working=this.working.substring(1)):this.matched=nil,result}),0),$def(self,"$match?",(function(pattern){var result=(pattern=this.$anchor(pattern)).exec(this.working);return null==result?nil:(this.prev_pos=this.pos,result[0].length)}),1),$def(self,"$pos=",(function(pos){return pos<0&&(pos+=this.string.$length()),this.pos=pos,this.working=this.string.slice(pos)}),1),$def(self,"$matched_size",(function(){return this.matched===nil?nil:this.matched.length}),0),$def(self,"$post_match",(function(){return this.matched===nil?nil:this.string.substr(this.pos)}),0),$def(self,"$pre_match",(function(){return this.matched===nil?nil:this.string.substr(0,this.prev_pos)}),0),$def(self,"$reset",(function(){return this.working=this.string,this.matched=nil,this.pos=0}),0),$def(self,"$rest",(function(){return this.working}),0),$def(self,"$rest?",(function(){return 0!==this.working.length}),0),$def(self,"$rest_size",(function(){return this.$rest().$size()}),0),$def(self,"$terminate",(function(){var $writer;return this.match=nil,$writer=[this.string.$length()],$send(this,"pos=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]}),0),$def(self,"$unscan",(function(){return this.pos=this.prev_pos,this.prev_pos=nil,this.match=nil,this}),0),$alias(self,"bol?","beginning_of_line?"),$alias(self,"getch","get_byte"),self.$private(),$def(self,"$anchor",(function(pattern){var flags=pattern.toString().match(/\/([^\/]+)$/);return flags=flags?flags[1]:void 0,new RegExp("^(?:"+pattern.source+")",flags)}),1)}($nesting[0],0,$nesting)};
diff --git a/opal/master/strscan.min.js.gz b/opal/master/strscan.min.js.gz
index c89de031..5241ade8 100644
Binary files a/opal/master/strscan.min.js.gz and b/opal/master/strscan.min.js.gz differ
diff --git a/opal/master/template.js b/opal/master/template.js
index 8eb1582f..9a52f9f4 100644
--- a/opal/master/template.js
+++ b/opal/master/template.js
@@ -1,101 +1,95 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["template"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $hash2 = Opal.hash2, $truthy = Opal.truthy, $send = Opal.send, $alias = Opal.alias;
+Opal.modules["template"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $klass = Opal.klass, $hash2 = Opal.hash2, $truthy = Opal.truthy, $defs = Opal.defs, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $def = Opal.def, $alias = Opal.alias;
 
-  Opal.add_stubs(['$[]', '$[]=', '$-', '$keys', '$attr_reader', '$instance_exec', '$new', '$to_proc', '$<<', '$join']);
+  Opal.add_stubs('[],[]=,-,keys,attr_reader,instance_exec,new,to_proc,<<,join');
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Template');
 
-    var $nesting = [self].concat($parent_nesting), $Template_$$$1, $Template_$$$eq$2, $Template_paths$3, $Template_initialize$4, $Template_inspect$5, $Template_render$6;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-    self.$$prototype.name = self.$$prototype.body = nil;
+    $proto.name = $proto.body = nil;
     
     self._cache = $hash2([], {});
-    Opal.defs(self, '$[]', $Template_$$$1 = function(name) {
+    $defs(self, '$[]', function $Template_$$$1(name) {
       var self = this, $ret_or_1 = nil;
       if (self._cache == null) self._cache = nil;
 
       if ($truthy(($ret_or_1 = self._cache['$[]'](name)))) {
         return $ret_or_1
       } else {
-        return self._cache['$[]']("" + "templates/" + (name))
+        return self._cache['$[]']("templates/" + (name))
       }
-    }, $Template_$$$1.$$arity = 1);
-    Opal.defs(self, '$[]=', $Template_$$$eq$2 = function(name, instance) {
+    }, 1);
+    $defs(self, '$[]=', function $Template_$$$eq$2(name, instance) {
       var self = this, $writer = nil;
       if (self._cache == null) self._cache = nil;
 
       
       $writer = [name, instance];
-      $send(self._cache, '[]=', Opal.to_a($writer));
+      $send(self._cache, '[]=', $to_a($writer));
       return $writer[$rb_minus($writer["length"], 1)];
-    }, $Template_$$$eq$2.$$arity = 2);
-    Opal.defs(self, '$paths', $Template_paths$3 = function $$paths() {
+    }, 2);
+    $defs(self, '$paths', function $$paths() {
       var self = this;
       if (self._cache == null) self._cache = nil;
 
       return self._cache.$keys()
-    }, $Template_paths$3.$$arity = 0);
+    }, 0);
     self.$attr_reader("body");
     
-    Opal.def(self, '$initialize', $Template_initialize$4 = function $$initialize(name) {
-      var $iter = $Template_initialize$4.$$p, body = $iter || nil, $a, self = this, $writer = nil;
+    $def(self, '$initialize', function $$initialize(name) {
+      var body = $$initialize.$$p || nil, $a, self = this, $writer = nil;
 
-      if ($iter) $Template_initialize$4.$$p = null;
+      delete $$initialize.$$p;
       
-      
-      if ($iter) $Template_initialize$4.$$p = null;;
+      ;
       $a = [name, body], (self.name = $a[0]), (self.body = $a[1]), $a;
       
       $writer = [name, self];
-      $send($$($nesting, 'Template'), '[]=', Opal.to_a($writer));
+      $send($$('Template'), '[]=', $to_a($writer));
       return $writer[$rb_minus($writer["length"], 1)];;
-    }, $Template_initialize$4.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$inspect', $Template_inspect$5 = function $$inspect() {
+    $def(self, '$inspect', function $$inspect() {
       var self = this;
 
-      return "" + "#<Template: '" + (self.name) + "'>"
-    }, $Template_inspect$5.$$arity = 0);
+      return "#<Template: '" + (self.name) + "'>"
+    }, 0);
     
-    Opal.def(self, '$render', $Template_render$6 = function $$render(ctx) {
+    $def(self, '$render', function $$render(ctx) {
       var self = this;
 
       
       
-      if (ctx == null) {
-        ctx = self;
-      };
-      return $send(ctx, 'instance_exec', [$$($nesting, 'OutputBuffer').$new()], self.body.$to_proc());
-    }, $Template_render$6.$$arity = -1);
-    return (function($base, $super, $parent_nesting) {
+      if (ctx == null) ctx = self;;
+      return $send(ctx, 'instance_exec', [$$('OutputBuffer').$new()], self.body.$to_proc());
+    }, -1);
+    return (function($base, $super) {
       var self = $klass($base, $super, 'OutputBuffer');
 
-      var $nesting = [self].concat($parent_nesting), $OutputBuffer_initialize$7, $OutputBuffer_append$8, $OutputBuffer_join$9;
+      var $proto = self.$$prototype;
 
-      self.$$prototype.buffer = nil;
+      $proto.buffer = nil;
       
       
-      Opal.def(self, '$initialize', $OutputBuffer_initialize$7 = function $$initialize() {
+      $def(self, '$initialize', function $$initialize() {
         var self = this;
 
         return (self.buffer = [])
-      }, $OutputBuffer_initialize$7.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$append', $OutputBuffer_append$8 = function $$append(str) {
+      $def(self, '$append', function $$append(str) {
         var self = this;
 
         return self.buffer['$<<'](str)
-      }, $OutputBuffer_append$8.$$arity = 1);
-      $alias(self, "append=", "append");
-      return (Opal.def(self, '$join', $OutputBuffer_join$9 = function $$join() {
+      }, 1);
+      
+      $def(self, '$join', function $$join() {
         var self = this;
 
         return self.buffer.$join()
-      }, $OutputBuffer_join$9.$$arity = 0), nil) && 'join';
-    })($nesting[0], null, $nesting);
+      }, 0);
+      return $alias(self, "append=", "append");
+    })($nesting[0], null);
   })($nesting[0], null, $nesting)
 };
diff --git a/opal/master/template.min.js b/opal/master/template.min.js
index b5353374..3cba1cc5 100644
--- a/opal/master/template.min.js
+++ b/opal/master/template.min.js
@@ -1 +1 @@
-Opal.modules.template=function(Opal){function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}Opal.top;var $nesting=[],nil=Opal.nil,$$=(Opal.$$$,Opal.$$),$klass=Opal.klass,$hash2=Opal.hash2,$truthy=Opal.truthy,$send=Opal.send,$alias=Opal.alias;return Opal.add_stubs(["$[]","$[]=","$-","$keys","$attr_reader","$instance_exec","$new","$to_proc","$<<","$join"]),function($Template_render$6,$Template_inspect$5){var $Template_initialize$4,$Template_render$6=$klass($Template_render$6,null,"Template"),$nesting=[$Template_render$6].concat($Template_inspect$5);return $Template_render$6.$$prototype.name=$Template_render$6.$$prototype.body=nil,$Template_render$6._cache=$hash2([],{}),Opal.defs($Template_render$6,"$[]",$Template_inspect$5=function(name){var $ret_or_1;return null==this._cache&&(this._cache=nil),$truthy($ret_or_1=this._cache["$[]"](name))?$ret_or_1:this._cache["$[]"]("templates/"+name)},$Template_inspect$5.$$arity=1),Opal.defs($Template_render$6,"$[]=",$Template_inspect$5=function(name,instance){var $writer;return null==this._cache&&(this._cache=nil),$writer=[name,instance],$send(this._cache,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]},$Template_inspect$5.$$arity=2),Opal.defs($Template_render$6,"$paths",$Template_inspect$5=function(){return null==this._cache&&(this._cache=nil),this._cache.$keys()},$Template_inspect$5.$$arity=0),$Template_render$6.$attr_reader("body"),Opal.def($Template_render$6,"$initialize",$Template_initialize$4=function(name){var $writer,$iter=$Template_initialize$4.$$p,$a=$iter||nil;return $iter&&($Template_initialize$4.$$p=null),$iter&&($Template_initialize$4.$$p=null),$a=[name,$a],this.name=$a[0],this.body=$a[1],$writer=[name,this],$send($$($nesting,"Template"),"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]},$Template_initialize$4.$$arity=1),Opal.def($Template_render$6,"$inspect",$Template_inspect$5=function(){return"#<Template: '"+this.name+"'>"},$Template_inspect$5.$$arity=0),Opal.def($Template_render$6,"$render",$Template_render$6=function(ctx){return null==ctx&&(ctx=this),$send(ctx,"instance_exec",[$$($nesting,"OutputBuffer").$new()],this.body.$to_proc())},$Template_render$6.$$arity=-1),function($OutputBuffer_join$9,$OutputBuffer_append$8){$OutputBuffer_join$9=$klass($OutputBuffer_join$9,null,"OutputBuffer"),[$OutputBuffer_join$9].concat($OutputBuffer_append$8);return $OutputBuffer_join$9.$$prototype.buffer=nil,Opal.def($OutputBuffer_join$9,"$initialize",$OutputBuffer_append$8=function(){return this.buffer=[]},$OutputBuffer_append$8.$$arity=0),Opal.def($OutputBuffer_join$9,"$append",$OutputBuffer_append$8=function(str){return this.buffer["$<<"](str)},$OutputBuffer_append$8.$$arity=1),$alias($OutputBuffer_join$9,"append=","append"),Opal.def($OutputBuffer_join$9,"$join",$OutputBuffer_join$9=function(){return this.buffer.$join()},$OutputBuffer_join$9.$$arity=0),nil&&"join"}($nesting[0],$nesting)}($nesting[0],$nesting)};
+Opal.modules.template=function(Opal){var $nesting=[],nil=Opal.nil,$klass=Opal.klass,$hash2=Opal.hash2,$truthy=Opal.truthy,$defs=Opal.defs,$send=Opal.send,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$def=Opal.def,$alias=Opal.alias;return Opal.add_stubs("[],[]=,-,keys,attr_reader,instance_exec,new,to_proc,<<,join"),function($base,$super,$parent_nesting){var self=$klass($base,null,"Template"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;return $proto.name=$proto.body=nil,self._cache=$hash2([],{}),$defs(self,"$[]",(function(name){var $ret_or_1;return null==this._cache&&(this._cache=nil),$truthy($ret_or_1=this._cache["$[]"](name))?$ret_or_1:this._cache["$[]"]("templates/"+name)}),1),$defs(self,"$[]=",(function(name,instance){var $writer;return null==this._cache&&(this._cache=nil),$writer=[name,instance],$send(this._cache,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]}),2),$defs(self,"$paths",(function(){return null==this._cache&&(this._cache=nil),this._cache.$keys()}),0),self.$attr_reader("body"),$def(self,"$initialize",(function $$initialize(name){var $a,$writer,body=$$initialize.$$p||nil;return delete $$initialize.$$p,$a=[name,body],this.name=$a[0],this.body=$a[1],$writer=[name,this],$send($$("Template"),"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]}),1),$def(self,"$inspect",(function(){return"#<Template: '"+this.name+"'>"}),0),$def(self,"$render",(function(ctx){return null==ctx&&(ctx=this),$send(ctx,"instance_exec",[$$("OutputBuffer").$new()],this.body.$to_proc())}),-1),function($base,$super){var self=$klass($base,null,"OutputBuffer");return self.$$prototype.buffer=nil,$def(self,"$initialize",(function(){return this.buffer=[]}),0),$def(self,"$append",(function(str){return this.buffer["$<<"](str)}),1),$def(self,"$join",(function(){return this.buffer.$join()}),0),$alias(self,"append=","append")}($nesting[0])}($nesting[0],0,$nesting)};
diff --git a/opal/master/template.min.js.gz b/opal/master/template.min.js.gz
index c2e12be6..083d5b80 100644
Binary files a/opal/master/template.min.js.gz and b/opal/master/template.min.js.gz differ
diff --git a/opal/master/thread.js b/opal/master/thread.js
index 44a4c9f6..8594ca44 100644
--- a/opal/master/thread.js
+++ b/opal/master/thread.js
@@ -1,191 +1,179 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["thread"] = function(Opal) {
-  function $rb_minus(lhs, rhs) {
-    return (typeof(lhs) === 'number' && typeof(rhs) === 'number') ? lhs - rhs : lhs['$-'](rhs);
-  }
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass, $truthy = Opal.truthy, $send = Opal.send, $hash2 = Opal.hash2, $alias = Opal.alias;
-
-  Opal.add_stubs(['$allocate', '$core_initialize!', '$current', '$raise', '$[]', '$coerce_key_name', '$[]=', '$-', '$key?', '$keys', '$private', '$coerce_to!', '$clear', '$empty?', '$size', '$shift', '$push', '$each', '$to_proc', '$=~', '$last_match', '$to_i', '$inspect', '$attr_reader', '$locked?', '$lock', '$unlock']);
-  
-  (function($base, $super, $parent_nesting) {
-    var self = $klass($base, $super, 'ThreadError');
-
-    var $nesting = [self].concat($parent_nesting);
+Opal.modules["thread"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $truthy = Opal.truthy, $defs = Opal.defs, $def = Opal.def, $send = Opal.send, $to_a = Opal.to_a, $rb_minus = Opal.rb_minus, $hash2 = Opal.hash2, $Opal = Opal.Opal, $alias = Opal.alias, $const_set = Opal.const_set;
 
-    return nil
-  })($nesting[0], $$($nesting, 'StandardError'), $nesting);
+  Opal.add_stubs('allocate,core_initialize!,current,raise,[],coerce_key_name,[]=,-,key?,keys,private,coerce_to!,clear,empty?,size,shift,push,each,to_proc,=~,last_match,to_i,inspect,attr_reader,locked?,lock,unlock');
+  
+  $klass($nesting[0], $$('StandardError'), 'ThreadError');
   (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Thread');
 
-    var $nesting = [self].concat($parent_nesting), $Thread_current$1, $Thread_list$2, $Thread_initialize$3, $Thread_$$$4, $Thread_$$$eq$5, $Thread_key$ques$6, $Thread_keys$7, $Thread_thread_variable_get$8, $Thread_thread_variable_set$9, $Thread_thread_variable$ques$10, $Thread_thread_variables$11, $Thread_core_initialize$excl$12, $Thread_coerce_key_name$13;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-    self.$$prototype.fiber_locals = self.$$prototype.thread_locals = nil;
+    $proto.fiber_locals = $proto.thread_locals = nil;
     
-    Opal.defs(self, '$current', $Thread_current$1 = function $$current() {
+    $defs(self, '$current', function $$current() {
       var self = this;
       if (self.current == null) self.current = nil;
 
       
-      if ($truthy(self.current)) {
-      } else {
+      if (!$truthy(self.current)) {
         
         self.current = self.$allocate();
         self.current['$core_initialize!']();
       };
       return self.current;
-    }, $Thread_current$1.$$arity = 0);
-    Opal.defs(self, '$list', $Thread_list$2 = function $$list() {
+    }, 0);
+    $defs(self, '$list', function $$list() {
       var self = this;
 
       return [self.$current()]
-    }, $Thread_list$2.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$initialize', $Thread_initialize$3 = function $$initialize($a) {
+    $def(self, '$initialize', function $$initialize($a) {
       var $post_args, args, self = this;
 
       
       
-      $post_args = Opal.slice.call(arguments, 0, arguments.length);
+      $post_args = Opal.slice.call(arguments);
       
       args = $post_args;;
-      return self.$raise($$($nesting, 'NotImplementedError'), "Thread creation not available");
-    }, $Thread_initialize$3.$$arity = -1);
+      return self.$raise($$('NotImplementedError'), "Thread creation not available");
+    }, -1);
     
-    Opal.def(self, '$[]', $Thread_$$$4 = function(key) {
+    $def(self, '$[]', function $Thread_$$$1(key) {
       var self = this;
 
       return self.fiber_locals['$[]'](self.$coerce_key_name(key))
-    }, $Thread_$$$4.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$[]=', $Thread_$$$eq$5 = function(key, value) {
+    $def(self, '$[]=', function $Thread_$$$eq$2(key, value) {
       var self = this, $writer = nil;
 
       
       $writer = [self.$coerce_key_name(key), value];
-      $send(self.fiber_locals, '[]=', Opal.to_a($writer));
+      $send(self.fiber_locals, '[]=', $to_a($writer));
       return $writer[$rb_minus($writer["length"], 1)];
-    }, $Thread_$$$eq$5.$$arity = 2);
+    }, 2);
     
-    Opal.def(self, '$key?', $Thread_key$ques$6 = function(key) {
+    $def(self, '$key?', function $Thread_key$ques$3(key) {
       var self = this;
 
       return self.fiber_locals['$key?'](self.$coerce_key_name(key))
-    }, $Thread_key$ques$6.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$keys', $Thread_keys$7 = function $$keys() {
+    $def(self, '$keys', function $$keys() {
       var self = this;
 
       return self.fiber_locals.$keys()
-    }, $Thread_keys$7.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$thread_variable_get', $Thread_thread_variable_get$8 = function $$thread_variable_get(key) {
+    $def(self, '$thread_variable_get', function $$thread_variable_get(key) {
       var self = this;
 
       return self.thread_locals['$[]'](self.$coerce_key_name(key))
-    }, $Thread_thread_variable_get$8.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$thread_variable_set', $Thread_thread_variable_set$9 = function $$thread_variable_set(key, value) {
+    $def(self, '$thread_variable_set', function $$thread_variable_set(key, value) {
       var self = this, $writer = nil;
 
       
       $writer = [self.$coerce_key_name(key), value];
-      $send(self.thread_locals, '[]=', Opal.to_a($writer));
+      $send(self.thread_locals, '[]=', $to_a($writer));
       return $writer[$rb_minus($writer["length"], 1)];
-    }, $Thread_thread_variable_set$9.$$arity = 2);
+    }, 2);
     
-    Opal.def(self, '$thread_variable?', $Thread_thread_variable$ques$10 = function(key) {
+    $def(self, '$thread_variable?', function $Thread_thread_variable$ques$4(key) {
       var self = this;
 
       return self.thread_locals['$key?'](self.$coerce_key_name(key))
-    }, $Thread_thread_variable$ques$10.$$arity = 1);
+    }, 1);
     
-    Opal.def(self, '$thread_variables', $Thread_thread_variables$11 = function $$thread_variables() {
+    $def(self, '$thread_variables', function $$thread_variables() {
       var self = this;
 
       return self.thread_locals.$keys()
-    }, $Thread_thread_variables$11.$$arity = 0);
+    }, 0);
     self.$private();
     
-    Opal.def(self, '$core_initialize!', $Thread_core_initialize$excl$12 = function() {
+    $def(self, '$core_initialize!', function $Thread_core_initialize$excl$5() {
       var self = this;
 
       
       self.thread_locals = $hash2([], {});
       return (self.fiber_locals = $hash2([], {}));
-    }, $Thread_core_initialize$excl$12.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$coerce_key_name', $Thread_coerce_key_name$13 = function $$coerce_key_name(key) {
-      var self = this;
-
-      return $$($nesting, 'Opal')['$coerce_to!'](key, $$($nesting, 'String'), "to_s")
-    }, $Thread_coerce_key_name$13.$$arity = 1);
+    $def(self, '$coerce_key_name', function $$coerce_key_name(key) {
+      
+      return $Opal['$coerce_to!'](key, $$('String'), "to_s")
+    }, 1);
     (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Queue');
 
-      var $nesting = [self].concat($parent_nesting), $Queue_initialize$14, $Queue_clear$15, $Queue_empty$ques$16, $Queue_size$17, $Queue_pop$18, $Queue_push$19, $Queue_each$20;
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-      self.$$prototype.storage = nil;
+      $proto.storage = nil;
       
       
-      Opal.def(self, '$initialize', $Queue_initialize$14 = function $$initialize() {
+      $def(self, '$initialize', function $$initialize() {
         var self = this;
 
         return self.$clear()
-      }, $Queue_initialize$14.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$clear', $Queue_clear$15 = function $$clear() {
+      $def(self, '$clear', function $$clear() {
         var self = this;
 
         return (self.storage = [])
-      }, $Queue_clear$15.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$empty?', $Queue_empty$ques$16 = function() {
+      $def(self, '$empty?', function $Queue_empty$ques$6() {
         var self = this;
 
         return self.storage['$empty?']()
-      }, $Queue_empty$ques$16.$$arity = 0);
+      }, 0);
       
-      Opal.def(self, '$size', $Queue_size$17 = function $$size() {
+      $def(self, '$size', function $$size() {
         var self = this;
 
         return self.storage.$size()
-      }, $Queue_size$17.$$arity = 0);
-      $alias(self, "length", "size");
+      }, 0);
       
-      Opal.def(self, '$pop', $Queue_pop$18 = function $$pop(non_block) {
+      $def(self, '$pop', function $$pop(non_block) {
         var self = this;
 
         
         
-        if (non_block == null) {
-          non_block = false;
-        };
+        if (non_block == null) non_block = false;;
         if ($truthy(self['$empty?']())) {
           
           if ($truthy(non_block)) {
-            self.$raise($$($nesting, 'ThreadError'), "Queue empty")};
-          self.$raise($$($nesting, 'ThreadError'), "Deadlock");};
+            self.$raise($$('ThreadError'), "Queue empty")
+          };
+          self.$raise($$('ThreadError'), "Deadlock");
+        };
         return self.storage.$shift();
-      }, $Queue_pop$18.$$arity = -1);
-      $alias(self, "shift", "pop");
-      $alias(self, "deq", "pop");
+      }, -1);
       
-      Opal.def(self, '$push', $Queue_push$19 = function $$push(value) {
+      $def(self, '$push', function $$push(value) {
         var self = this;
 
         return self.storage.$push(value)
-      }, $Queue_push$19.$$arity = 1);
-      $alias(self, "<<", "push");
-      $alias(self, "enq", "push");
-      return (Opal.def(self, '$each', $Queue_each$20 = function $$each() {
-        var $iter = $Queue_each$20.$$p, block = $iter || nil, self = this;
+      }, 1);
+      
+      $def(self, '$each', function $$each() {
+        var block = $$each.$$p || nil, self = this;
 
-        if ($iter) $Queue_each$20.$$p = null;
+        delete $$each.$$p;
         
-        
-        if ($iter) $Queue_each$20.$$p = null;;
+        ;
         return $send(self.storage, 'each', [], block.$to_proc());
-      }, $Queue_each$20.$$arity = 0), nil) && 'each';
+      }, 0);
+      $alias(self, "<<", "push");
+      $alias(self, "deq", "pop");
+      $alias(self, "enq", "push");
+      $alias(self, "length", "size");
+      return $alias(self, "shift", "pop");
     })($nesting[0], null, $nesting);
     return (function($base, $super, $parent_nesting) {
       var self = $klass($base, $super, 'Backtrace');
@@ -195,82 +183,79 @@ Opal.modules["thread"] = function(Opal) {
       return (function($base, $super, $parent_nesting) {
         var self = $klass($base, $super, 'Location');
 
-        var $nesting = [self].concat($parent_nesting), $Location_initialize$21, $Location_to_s$22, $Location_inspect$23;
+        var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-        self.$$prototype.label = self.$$prototype.str = nil;
+        $proto.label = $proto.str = nil;
         
         
-        Opal.def(self, '$initialize', $Location_initialize$21 = function $$initialize(str) {
+        $def(self, '$initialize', function $$initialize(str) {
           var self = this, $ret_or_1 = nil;
 
           
           self.str = str;
           str['$=~'](/^(.*?):(\d+):(\d+):in `(.*?)'$/);
-          self.path = $$($nesting, 'Regexp').$last_match(1);
-          self.label = $$($nesting, 'Regexp').$last_match(4);
-          self.lineno = $$($nesting, 'Regexp').$last_match(2).$to_i();
+          self.path = $$('Regexp').$last_match(1);
+          self.label = $$('Regexp').$last_match(4);
+          self.lineno = $$('Regexp').$last_match(2).$to_i();
           self.label['$=~'](/(\w+)$/);
-          return (self.base_label = (function() {if ($truthy(($ret_or_1 = $$($nesting, 'Regexp').$last_match(1)))) {
-            return $ret_or_1
-          } else {
-            return self.label
-          }; return nil; })());
-        }, $Location_initialize$21.$$arity = 1);
+          return (self.base_label = ($truthy(($ret_or_1 = $$('Regexp').$last_match(1))) ? ($ret_or_1) : (self.label)));
+        }, 1);
         
-        Opal.def(self, '$to_s', $Location_to_s$22 = function $$to_s() {
+        $def(self, '$to_s', function $$to_s() {
           var self = this;
 
           return self.str
-        }, $Location_to_s$22.$$arity = 0);
+        }, 0);
         
-        Opal.def(self, '$inspect', $Location_inspect$23 = function $$inspect() {
+        $def(self, '$inspect', function $$inspect() {
           var self = this;
 
           return self.str.$inspect()
-        }, $Location_inspect$23.$$arity = 0);
+        }, 0);
         self.$attr_reader("base_label", "label", "lineno", "path");
         return $alias(self, "absolute_path", "path");
       })($nesting[0], null, $nesting)
     })($nesting[0], null, $nesting);
   })($nesting[0], null, $nesting);
-  Opal.const_set($nesting[0], 'Queue', $$$($$($nesting, 'Thread'), 'Queue'));
+  $const_set($nesting[0], 'Queue', $$$($$('Thread'), 'Queue'));
   return (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Mutex');
 
-    var $nesting = [self].concat($parent_nesting), $Mutex_initialize$24, $Mutex_lock$25, $Mutex_locked$ques$26, $Mutex_owned$ques$27, $Mutex_try_lock$28, $Mutex_unlock$29, $Mutex_synchronize$30;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
 
-    self.$$prototype.locked = nil;
+    $proto.locked = nil;
     
     
-    Opal.def(self, '$initialize', $Mutex_initialize$24 = function $$initialize() {
+    $def(self, '$initialize', function $$initialize() {
       var self = this;
 
       return (self.locked = false)
-    }, $Mutex_initialize$24.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$lock', $Mutex_lock$25 = function $$lock() {
+    $def(self, '$lock', function $$lock() {
       var self = this;
 
       
       if ($truthy(self.locked)) {
-        self.$raise($$($nesting, 'ThreadError'), "Deadlock")};
+        self.$raise($$('ThreadError'), "Deadlock")
+      };
       self.locked = true;
       return self;
-    }, $Mutex_lock$25.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$locked?', $Mutex_locked$ques$26 = function() {
+    $def(self, '$locked?', function $Mutex_locked$ques$7() {
       var self = this;
 
       return self.locked
-    }, $Mutex_locked$ques$26.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$owned?', $Mutex_owned$ques$27 = function() {
+    $def(self, '$owned?', function $Mutex_owned$ques$8() {
       var self = this;
 
       return self.locked
-    }, $Mutex_owned$ques$27.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$try_lock', $Mutex_try_lock$28 = function $$try_lock() {
+    $def(self, '$try_lock', function $$try_lock() {
       var self = this;
 
       if ($truthy(self['$locked?']())) {
@@ -280,23 +265,22 @@ Opal.modules["thread"] = function(Opal) {
         self.$lock();
         return true;
       }
-    }, $Mutex_try_lock$28.$$arity = 0);
+    }, 0);
     
-    Opal.def(self, '$unlock', $Mutex_unlock$29 = function $$unlock() {
+    $def(self, '$unlock', function $$unlock() {
       var self = this;
 
       
-      if ($truthy(self.locked)) {
-      } else {
-        self.$raise($$($nesting, 'ThreadError'), "Mutex not locked")
+      if (!$truthy(self.locked)) {
+        self.$raise($$('ThreadError'), "Mutex not locked")
       };
       self.locked = false;
       return self;
-    }, $Mutex_unlock$29.$$arity = 0);
-    return (Opal.def(self, '$synchronize', $Mutex_synchronize$30 = function $$synchronize() {
-      var $iter = $Mutex_synchronize$30.$$p, $yield = $iter || nil, self = this;
+    }, 0);
+    return $def(self, '$synchronize', function $$synchronize() {
+      var $yield = $$synchronize.$$p || nil, self = this;
 
-      if ($iter) $Mutex_synchronize$30.$$p = null;
+      delete $$synchronize.$$p;
       
       self.$lock();
       
@@ -305,6 +289,6 @@ Opal.modules["thread"] = function(Opal) {
       } finally {
         self.$unlock()
       }; })();;
-    }, $Mutex_synchronize$30.$$arity = 0), nil) && 'synchronize';
+    }, 0);
   })($nesting[0], null, $nesting);
 };
diff --git a/opal/master/thread.min.js b/opal/master/thread.min.js
index ae7e12a3..d3086b0e 100644
--- a/opal/master/thread.min.js
+++ b/opal/master/thread.min.js
@@ -1 +1 @@
-Opal.modules.thread=function(Opal){function $rb_minus(lhs,rhs){return"number"==typeof lhs&&"number"==typeof rhs?lhs-rhs:lhs["$-"](rhs)}Opal.top;var $base,$super,$parent_nesting,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$$=Opal.$$,$klass=Opal.klass,$truthy=Opal.truthy,$send=Opal.send,$hash2=Opal.hash2,$alias=Opal.alias;return Opal.add_stubs(["$allocate","$core_initialize!","$current","$raise","$[]","$coerce_key_name","$[]=","$-","$key?","$keys","$private","$coerce_to!","$clear","$empty?","$size","$shift","$push","$each","$to_proc","$=~","$last_match","$to_i","$inspect","$attr_reader","$locked?","$lock","$unlock"]),$base=$nesting[0],$super=$$($nesting,"StandardError"),$parent_nesting=$nesting,[$klass($base,$super,"ThreadError")].concat($parent_nesting),function($Thread_coerce_key_name$13,$Thread_core_initialize$excl$12){var $nesting=[$Thread_coerce_key_name$13=$klass($Thread_coerce_key_name$13,null,"Thread")].concat($Thread_core_initialize$excl$12);$Thread_coerce_key_name$13.$$prototype.fiber_locals=$Thread_coerce_key_name$13.$$prototype.thread_locals=nil,Opal.defs($Thread_coerce_key_name$13,"$current",$Thread_core_initialize$excl$12=function(){return null==this.current&&(this.current=nil),$truthy(this.current)||(this.current=this.$allocate(),this.current["$core_initialize!"]()),this.current},$Thread_core_initialize$excl$12.$$arity=0),Opal.defs($Thread_coerce_key_name$13,"$list",$Thread_core_initialize$excl$12=function(){return[this.$current()]},$Thread_core_initialize$excl$12.$$arity=0),Opal.def($Thread_coerce_key_name$13,"$initialize",$Thread_core_initialize$excl$12=function($a){Opal.slice.call(arguments,0,arguments.length);return this.$raise($$($nesting,"NotImplementedError"),"Thread creation not available")},$Thread_core_initialize$excl$12.$$arity=-1),Opal.def($Thread_coerce_key_name$13,"$[]",$Thread_core_initialize$excl$12=function(key){return this.fiber_locals["$[]"](this.$coerce_key_name(key))},$Thread_core_initialize$excl$12.$$arity=1),Opal.def($Thread_coerce_key_name$13,"$[]=",$Thread_core_initialize$excl$12=function(key,value){var $writer=[this.$coerce_key_name(key),value];return $send(this.fiber_locals,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]},$Thread_core_initialize$excl$12.$$arity=2),Opal.def($Thread_coerce_key_name$13,"$key?",$Thread_core_initialize$excl$12=function(key){return this.fiber_locals["$key?"](this.$coerce_key_name(key))},$Thread_core_initialize$excl$12.$$arity=1),Opal.def($Thread_coerce_key_name$13,"$keys",$Thread_core_initialize$excl$12=function(){return this.fiber_locals.$keys()},$Thread_core_initialize$excl$12.$$arity=0),Opal.def($Thread_coerce_key_name$13,"$thread_variable_get",$Thread_core_initialize$excl$12=function(key){return this.thread_locals["$[]"](this.$coerce_key_name(key))},$Thread_core_initialize$excl$12.$$arity=1),Opal.def($Thread_coerce_key_name$13,"$thread_variable_set",$Thread_core_initialize$excl$12=function(key,value){var $writer=[this.$coerce_key_name(key),value];return $send(this.thread_locals,"[]=",Opal.to_a($writer)),$writer[$rb_minus($writer.length,1)]},$Thread_core_initialize$excl$12.$$arity=2),Opal.def($Thread_coerce_key_name$13,"$thread_variable?",$Thread_core_initialize$excl$12=function(key){return this.thread_locals["$key?"](this.$coerce_key_name(key))},$Thread_core_initialize$excl$12.$$arity=1),Opal.def($Thread_coerce_key_name$13,"$thread_variables",$Thread_core_initialize$excl$12=function(){return this.thread_locals.$keys()},$Thread_core_initialize$excl$12.$$arity=0),$Thread_coerce_key_name$13.$private(),Opal.def($Thread_coerce_key_name$13,"$core_initialize!",$Thread_core_initialize$excl$12=function(){return this.thread_locals=$hash2([],{}),this.fiber_locals=$hash2([],{})},$Thread_core_initialize$excl$12.$$arity=0),Opal.def($Thread_coerce_key_name$13,"$coerce_key_name",$Thread_coerce_key_name$13=function(key){return $$($nesting,"Opal")["$coerce_to!"](key,$$($nesting,"String"),"to_s")},$Thread_coerce_key_name$13.$$arity=1),function(self,$Queue_push$19){var $Queue_each$20,$nesting=[self=$klass(self,null,"Queue")].concat($Queue_push$19);self.$$prototype.storage=nil,Opal.def(self,"$initialize",$Queue_push$19=function(){return this.$clear()},$Queue_push$19.$$arity=0),Opal.def(self,"$clear",$Queue_push$19=function(){return this.storage=[]},$Queue_push$19.$$arity=0),Opal.def(self,"$empty?",$Queue_push$19=function(){return this.storage["$empty?"]()},$Queue_push$19.$$arity=0),Opal.def(self,"$size",$Queue_push$19=function(){return this.storage.$size()},$Queue_push$19.$$arity=0),$alias(self,"length","size"),Opal.def(self,"$pop",$Queue_push$19=function(non_block){return null==non_block&&(non_block=!1),$truthy(this["$empty?"]())&&($truthy(non_block)&&this.$raise($$($nesting,"ThreadError"),"Queue empty"),this.$raise($$($nesting,"ThreadError"),"Deadlock")),this.storage.$shift()},$Queue_push$19.$$arity=-1),$alias(self,"shift","pop"),$alias(self,"deq","pop"),Opal.def(self,"$push",$Queue_push$19=function(value){return this.storage.$push(value)},$Queue_push$19.$$arity=1),$alias(self,"<<","push"),$alias(self,"enq","push"),Opal.def(self,"$each",$Queue_each$20=function(){var $iter=$Queue_each$20.$$p,block=$iter||nil;return $iter&&($Queue_each$20.$$p=null),$iter&&($Queue_each$20.$$p=null),$send(this.storage,"each",[],block.$to_proc())},$Queue_each$20.$$arity=0)}($nesting[0],$nesting),function($base,$nesting){!function(self,$Location_inspect$23){var $nesting=[self=$klass(self,null,"Location")].concat($Location_inspect$23);self.$$prototype.label=self.$$prototype.str=nil,Opal.def(self,"$initialize",$Location_inspect$23=function(str){var self=this,$ret_or_1=nil;return(self.str=str)["$=~"](/^(.*?):(\d+):(\d+):in `(.*?)'$/),self.path=$$($nesting,"Regexp").$last_match(1),self.label=$$($nesting,"Regexp").$last_match(4),self.lineno=$$($nesting,"Regexp").$last_match(2).$to_i(),self.label["$=~"](/(\w+)$/),self.base_label=$truthy($ret_or_1=$$($nesting,"Regexp").$last_match(1))?$ret_or_1:self.label},$Location_inspect$23.$$arity=1),Opal.def(self,"$to_s",$Location_inspect$23=function(){return this.str},$Location_inspect$23.$$arity=0),Opal.def(self,"$inspect",$Location_inspect$23=function(){return this.str.$inspect()},$Location_inspect$23.$$arity=0),self.$attr_reader("base_label","label","lineno","path"),$alias(self,"absolute_path","path")}(($nesting=[$klass($base,null,"Backtrace")].concat($nesting))[0],$nesting)}($nesting[0],$nesting)}($nesting[0],$nesting),Opal.const_set($nesting[0],"Queue",$$$($$($nesting,"Thread"),"Queue")),function(self,$Mutex_unlock$29){var $Mutex_synchronize$30,self=$klass(self,null,"Mutex"),$nesting=[self].concat($Mutex_unlock$29);return self.$$prototype.locked=nil,Opal.def(self,"$initialize",$Mutex_unlock$29=function(){return this.locked=!1},$Mutex_unlock$29.$$arity=0),Opal.def(self,"$lock",$Mutex_unlock$29=function(){return $truthy(this.locked)&&this.$raise($$($nesting,"ThreadError"),"Deadlock"),this.locked=!0,this},$Mutex_unlock$29.$$arity=0),Opal.def(self,"$locked?",$Mutex_unlock$29=function(){return this.locked},$Mutex_unlock$29.$$arity=0),Opal.def(self,"$owned?",$Mutex_unlock$29=function(){return this.locked},$Mutex_unlock$29.$$arity=0),Opal.def(self,"$try_lock",$Mutex_unlock$29=function(){return!$truthy(this["$locked?"]())&&(this.$lock(),!0)},$Mutex_unlock$29.$$arity=0),Opal.def(self,"$unlock",$Mutex_unlock$29=function(){return $truthy(this.locked)||this.$raise($$($nesting,"ThreadError"),"Mutex not locked"),this.locked=!1,this},$Mutex_unlock$29.$$arity=0),Opal.def(self,"$synchronize",$Mutex_synchronize$30=function(){var $iter=$Mutex_synchronize$30.$$p,$yield=$iter||nil,self=this;return $iter&&($Mutex_synchronize$30.$$p=null),self.$lock(),function(){try{return Opal.yieldX($yield,[])}finally{self.$unlock()}}()},$Mutex_synchronize$30.$$arity=0),nil&&"synchronize"}($nesting[0],$nesting)};
+Opal.modules.thread=function(Opal){var $nesting=[],$$=Opal.$r($nesting),nil=Opal.nil,$$$=Opal.$$$,$klass=Opal.klass,$truthy=Opal.truthy,$defs=Opal.defs,$def=Opal.def,$send=Opal.send,$to_a=Opal.to_a,$rb_minus=Opal.rb_minus,$hash2=Opal.hash2,$Opal=Opal.Opal,$alias=Opal.alias,$const_set=Opal.const_set;return Opal.add_stubs("allocate,core_initialize!,current,raise,[],coerce_key_name,[]=,-,key?,keys,private,coerce_to!,clear,empty?,size,shift,push,each,to_proc,=~,last_match,to_i,inspect,attr_reader,locked?,lock,unlock"),$klass($nesting[0],$$("StandardError"),"ThreadError"),function($base,$super,$parent_nesting){var self=$klass($base,null,"Thread"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;$proto.fiber_locals=$proto.thread_locals=nil,$defs(self,"$current",(function(){return null==this.current&&(this.current=nil),$truthy(this.current)||(this.current=this.$allocate(),this.current["$core_initialize!"]()),this.current}),0),$defs(self,"$list",(function(){return[this.$current()]}),0),$def(self,"$initialize",(function($a){var self=this;return Opal.slice.call(arguments),self.$raise($$("NotImplementedError"),"Thread creation not available")}),-1),$def(self,"$[]",(function(key){return this.fiber_locals["$[]"](this.$coerce_key_name(key))}),1),$def(self,"$[]=",(function(key,value){var $writer;return $writer=[this.$coerce_key_name(key),value],$send(this.fiber_locals,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]}),2),$def(self,"$key?",(function(key){return this.fiber_locals["$key?"](this.$coerce_key_name(key))}),1),$def(self,"$keys",(function(){return this.fiber_locals.$keys()}),0),$def(self,"$thread_variable_get",(function(key){return this.thread_locals["$[]"](this.$coerce_key_name(key))}),1),$def(self,"$thread_variable_set",(function(key,value){var $writer;return $writer=[this.$coerce_key_name(key),value],$send(this.thread_locals,"[]=",$to_a($writer)),$writer[$rb_minus($writer.length,1)]}),2),$def(self,"$thread_variable?",(function(key){return this.thread_locals["$key?"](this.$coerce_key_name(key))}),1),$def(self,"$thread_variables",(function(){return this.thread_locals.$keys()}),0),self.$private(),$def(self,"$core_initialize!",(function(){return this.thread_locals=$hash2([],{}),this.fiber_locals=$hash2([],{})}),0),$def(self,"$coerce_key_name",(function(key){return $Opal["$coerce_to!"](key,$$("String"),"to_s")}),1),function($base,$super,$parent_nesting){var self=$klass($base,null,"Queue"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);self.$$prototype.storage=nil,$def(self,"$initialize",(function(){return this.$clear()}),0),$def(self,"$clear",(function(){return this.storage=[]}),0),$def(self,"$empty?",(function(){return this.storage["$empty?"]()}),0),$def(self,"$size",(function(){return this.storage.$size()}),0),$def(self,"$pop",(function(non_block){return null==non_block&&(non_block=!1),$truthy(this["$empty?"]())&&($truthy(non_block)&&this.$raise($$("ThreadError"),"Queue empty"),this.$raise($$("ThreadError"),"Deadlock")),this.storage.$shift()}),-1),$def(self,"$push",(function(value){return this.storage.$push(value)}),1),$def(self,"$each",(function $$each(){var block=$$each.$$p||nil;return delete $$each.$$p,$send(this.storage,"each",[],block.$to_proc())}),0),$alias(self,"<<","push"),$alias(self,"deq","pop"),$alias(self,"enq","push"),$alias(self,"length","size"),$alias(self,"shift","pop")}($nesting[0],0,$nesting),function($base,$super,$parent_nesting){var $nesting=[$klass($base,null,"Backtrace")].concat($parent_nesting);(function($base,$super,$parent_nesting){var self=$klass($base,null,"Location"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;$proto.label=$proto.str=nil,$def(self,"$initialize",(function(str){var $ret_or_1;return this.str=str,str["$=~"](/^(.*?):(\d+):(\d+):in `(.*?)'$/),this.path=$$("Regexp").$last_match(1),this.label=$$("Regexp").$last_match(4),this.lineno=$$("Regexp").$last_match(2).$to_i(),this.label["$=~"](/(\w+)$/),this.base_label=$truthy($ret_or_1=$$("Regexp").$last_match(1))?$ret_or_1:this.label}),1),$def(self,"$to_s",(function(){return this.str}),0),$def(self,"$inspect",(function(){return this.str.$inspect()}),0),self.$attr_reader("base_label","label","lineno","path"),$alias(self,"absolute_path","path")})($nesting[0],0,$nesting)}($nesting[0],0,$nesting)}($nesting[0],0,$nesting),$const_set($nesting[0],"Queue",$$$($$("Thread"),"Queue")),function($base,$super,$parent_nesting){var self=$klass($base,null,"Mutex"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return self.$$prototype.locked=nil,$def(self,"$initialize",(function(){return this.locked=!1}),0),$def(self,"$lock",(function(){return $truthy(this.locked)&&this.$raise($$("ThreadError"),"Deadlock"),this.locked=!0,this}),0),$def(self,"$locked?",(function(){return this.locked}),0),$def(self,"$owned?",(function(){return this.locked}),0),$def(self,"$try_lock",(function(){return!$truthy(this["$locked?"]())&&(this.$lock(),!0)}),0),$def(self,"$unlock",(function(){return $truthy(this.locked)||this.$raise($$("ThreadError"),"Mutex not locked"),this.locked=!1,this}),0),$def(self,"$synchronize",(function $$synchronize(){var $yield=$$synchronize.$$p||nil,self=this;return delete $$synchronize.$$p,self.$lock(),function(){try{return Opal.yieldX($yield,[])}finally{self.$unlock()}}()}),0)}($nesting[0],0,$nesting)};
diff --git a/opal/master/thread.min.js.gz b/opal/master/thread.min.js.gz
index 5493a06b..0a4023c7 100644
Binary files a/opal/master/thread.min.js.gz and b/opal/master/thread.min.js.gz differ
diff --git a/opal/master/time.js b/opal/master/time.js
index 74bfb8d7..9f8cef23 100644
--- a/opal/master/time.js
+++ b/opal/master/time.js
@@ -1,23 +1,1309 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["time"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $klass = Opal.klass;
+Opal.modules["forwardable"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $send = Opal.send, $truthy = Opal.truthy, $def = Opal.def, $to_a = Opal.to_a, $alias = Opal.alias;
 
-  Opal.add_stubs(['$strftime']);
+  Opal.add_stubs('each,respond_to?,def_instance_delegator,include?,start_with?,to_s,define_method,__send__,instance_variable_get,to_proc,def_single_delegator,define_singleton_method');
+  
+  (function($base) {
+    var self = $module($base, 'Forwardable');
+
+    
+    
+    
+    $def(self, '$instance_delegate', function $$instance_delegate(hash) {
+      var self = this;
+
+      return $send(hash, 'each', [], function $$1(methods, accessor){var self = $$1.$$s == null ? this : $$1.$$s;
+
+        
+        
+        if (methods == null) methods = nil;;
+        
+        if (accessor == null) accessor = nil;;
+        if (!$truthy(methods['$respond_to?']("each"))) {
+          methods = [methods]
+        };
+        return $send(methods, 'each', [], function $$2(method){var self = $$2.$$s == null ? this : $$2.$$s;
+
+          
+          
+          if (method == null) method = nil;;
+          return self.$def_instance_delegator(accessor, method);}, {$$arity: 1, $$s: self});}, {$$arity: 2, $$s: self})
+    }, 1);
+    
+    $def(self, '$def_instance_delegators', function $$def_instance_delegators(accessor, $a) {
+      var $post_args, methods, self = this;
+
+      
+      
+      $post_args = Opal.slice.call(arguments, 1);
+      
+      methods = $post_args;;
+      return $send(methods, 'each', [], function $$3(method){var self = $$3.$$s == null ? this : $$3.$$s;
+
+        
+        
+        if (method == null) method = nil;;
+        if ($truthy(["__send__", "__id__"]['$include?'](method))) {
+          return nil;
+        };
+        return self.$def_instance_delegator(accessor, method);}, {$$arity: 1, $$s: self});
+    }, -2);
+    
+    $def(self, '$def_instance_delegator', function $$def_instance_delegator(accessor, method, ali) {
+      var $yield = $$def_instance_delegator.$$p || nil, self = this;
+
+      delete $$def_instance_delegator.$$p;
+      
+      
+      if (ali == null) ali = method;;
+      if ($truthy(accessor.$to_s()['$start_with?']("@"))) {
+        return $send(self, 'define_method', [ali], function $$4($a){var block = $$4.$$p || nil, $post_args, args, self = $$4.$$s == null ? this : $$4.$$s;
+
+          delete $$4.$$p;
+          
+          ;
+          
+          $post_args = Opal.slice.call(arguments);
+          
+          args = $post_args;;
+          return $send(self.$instance_variable_get(accessor), '__send__', [method].concat($to_a(args)), block.$to_proc());}, {$$arity: -1, $$s: self})
+      } else {
+        return $send(self, 'define_method', [ali], function $$5($a){var block = $$5.$$p || nil, $post_args, args, self = $$5.$$s == null ? this : $$5.$$s;
+
+          delete $$5.$$p;
+          
+          ;
+          
+          $post_args = Opal.slice.call(arguments);
+          
+          args = $post_args;;
+          return $send(self.$__send__(accessor), '__send__', [method].concat($to_a(args)), block.$to_proc());}, {$$arity: -1, $$s: self})
+      };
+    }, -3);
+    $alias(self, "delegate", "instance_delegate");
+    $alias(self, "def_delegators", "def_instance_delegators");
+    return $alias(self, "def_delegator", "def_instance_delegator");
+  })($nesting[0]);
+  return (function($base) {
+    var self = $module($base, 'SingleForwardable');
+
+    
+    
+    
+    $def(self, '$single_delegate', function $$single_delegate(hash) {
+      var self = this;
+
+      return $send(hash, 'each', [], function $$6(methods, accessor){var self = $$6.$$s == null ? this : $$6.$$s;
+
+        
+        
+        if (methods == null) methods = nil;;
+        
+        if (accessor == null) accessor = nil;;
+        if (!$truthy(methods['$respond_to?']("each"))) {
+          methods = [methods]
+        };
+        return $send(methods, 'each', [], function $$7(method){var self = $$7.$$s == null ? this : $$7.$$s;
+
+          
+          
+          if (method == null) method = nil;;
+          return self.$def_single_delegator(accessor, method);}, {$$arity: 1, $$s: self});}, {$$arity: 2, $$s: self})
+    }, 1);
+    
+    $def(self, '$def_single_delegators', function $$def_single_delegators(accessor, $a) {
+      var $post_args, methods, self = this;
+
+      
+      
+      $post_args = Opal.slice.call(arguments, 1);
+      
+      methods = $post_args;;
+      return $send(methods, 'each', [], function $$8(method){var self = $$8.$$s == null ? this : $$8.$$s;
+
+        
+        
+        if (method == null) method = nil;;
+        if ($truthy(["__send__", "__id__"]['$include?'](method))) {
+          return nil;
+        };
+        return self.$def_single_delegator(accessor, method);}, {$$arity: 1, $$s: self});
+    }, -2);
+    
+    $def(self, '$def_single_delegator', function $$def_single_delegator(accessor, method, ali) {
+      var $yield = $$def_single_delegator.$$p || nil, self = this;
+
+      delete $$def_single_delegator.$$p;
+      
+      
+      if (ali == null) ali = method;;
+      if ($truthy(accessor.$to_s()['$start_with?']("@"))) {
+        return $send(self, 'define_singleton_method', [ali], function $$9($a){var block = $$9.$$p || nil, $post_args, args, self = $$9.$$s == null ? this : $$9.$$s;
+
+          delete $$9.$$p;
+          
+          ;
+          
+          $post_args = Opal.slice.call(arguments);
+          
+          args = $post_args;;
+          return $send(self.$instance_variable_get(accessor), '__send__', [method].concat($to_a(args)), block.$to_proc());}, {$$arity: -1, $$s: self})
+      } else {
+        return $send(self, 'define_singleton_method', [ali], function $$10($a){var block = $$10.$$p || nil, $post_args, args, self = $$10.$$s == null ? this : $$10.$$s;
+
+          delete $$10.$$p;
+          
+          ;
+          
+          $post_args = Opal.slice.call(arguments);
+          
+          args = $post_args;;
+          return $send(self.$__send__(accessor), '__send__', [method].concat($to_a(args)), block.$to_proc());}, {$$arity: -1, $$s: self})
+      };
+    }, -3);
+    $alias(self, "delegate", "single_delegate");
+    $alias(self, "def_delegators", "def_single_delegators");
+    return $alias(self, "def_delegator", "def_single_delegator");
+  })($nesting[0]);
+};
+
+Opal.modules["date/infinity"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $def = Opal.def, $eqeqeq = Opal.eqeqeq, $to_ary = Opal.to_ary, $send2 = Opal.send2, $find_super = Opal.find_super, $eqeq = Opal.eqeq, $truthy = Opal.truthy, $rb_gt = Opal.rb_gt;
+
+  Opal.add_stubs('include,<=>,attr_reader,nonzero?,d,zero?,new,class,-@,+@,===,coerce,==,>');
   return (function($base, $super, $parent_nesting) {
+    var self = $klass($base, $super, 'Date');
+
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+    return (function($base, $super, $parent_nesting) {
+      var self = $klass($base, $super, 'Infinity');
+
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
+
+      $proto.d = nil;
+      
+      self.$include($$('Comparable'));
+      
+      $def(self, '$initialize', function $$initialize(d) {
+        var self = this;
+
+        
+        
+        if (d == null) d = 1;;
+        return (self.d = d['$<=>'](0));
+      }, -1);
+      self.$attr_reader("d");
+      
+      $def(self, '$zero?', function $Infinity_zero$ques$1() {
+        
+        return false
+      }, 0);
+      
+      $def(self, '$finite?', function $Infinity_finite$ques$2() {
+        
+        return false
+      }, 0);
+      
+      $def(self, '$infinite?', function $Infinity_infinite$ques$3() {
+        var self = this;
+
+        return self.$d()['$nonzero?']()
+      }, 0);
+      
+      $def(self, '$nan?', function $Infinity_nan$ques$4() {
+        var self = this;
+
+        return self.$d()['$zero?']()
+      }, 0);
+      
+      $def(self, '$abs', function $$abs() {
+        var self = this;
+
+        return self.$class().$new()
+      }, 0);
+      
+      $def(self, '$-@', function $Infinity_$minus$$5() {
+        var self = this;
+
+        return self.$class().$new(self.$d()['$-@']())
+      }, 0);
+      
+      $def(self, '$+@', function $Infinity_$plus$$6() {
+        var self = this;
+
+        return self.$class().$new(self.$d()['$+@']())
+      }, 0);
+      
+      $def(self, '$<=>', function $Infinity_$lt_eq_gt$7(other) {
+        var $a, $b, self = this, $ret_or_1 = nil, l = nil, r = nil;
+
+        if ($eqeqeq($$('Infinity'), ($ret_or_1 = other))) {
+          return self.$d()['$<=>'](other.$d())
+        } else if ($eqeqeq($$('Numeric'), $ret_or_1)) {
+          return self.$d()
+        } else {
+          
+          try {
+            
+            $b = other.$coerce(self), $a = $to_ary($b), (l = ($a[0] == null ? nil : $a[0])), (r = ($a[1] == null ? nil : $a[1])), $b;
+            return l['$<=>'](r);
+          } catch ($err) {
+            if (Opal.rescue($err, [$$('NoMethodError')])) {
+              try {
+                return nil
+              } finally { Opal.pop_exception(); }
+            } else { throw $err; }
+          };
+        }
+      }, 1);
+      
+      $def(self, '$coerce', function $$coerce(other) {
+        var $yield = $$coerce.$$p || nil, self = this, $ret_or_1 = nil;
+
+        delete $$coerce.$$p;
+        if ($eqeqeq($$('Numeric'), ($ret_or_1 = other))) {
+          return [self.$d()['$-@'](), self.$d()]
+        } else {
+          return $send2(self, $find_super(self, 'coerce', $$coerce, false, true), 'coerce', [other], $yield)
+        }
+      }, 1);
+      return $def(self, '$to_f', function $$to_f() {
+        var self = this;
+
+        
+        if ($eqeq(self.d, 0)) {
+          return 0
+        };
+        if ($truthy($rb_gt(self.d, 0))) {
+          return $$$($$('Float'), 'INFINITY')
+        } else {
+          return $$$($$('Float'), 'INFINITY')['$-@']()
+        };
+      }, 0);
+    })($nesting[0], $$('Numeric'), $nesting)
+  })($nesting[0], null, $nesting)
+};
+
+Opal.modules["time"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $defs = Opal.defs, $hash2 = Opal.hash2, $send = Opal.send, $eqeqeq = Opal.eqeqeq, $truthy = Opal.truthy, $rb_gt = Opal.rb_gt, $rb_plus = Opal.rb_plus, $alias = Opal.alias, $def = Opal.def;
+
+  Opal.add_stubs('define_method,===,new_offset,utc,year,month,day,getutc,strftime,>,+,def_formatter,wrap,require');
+  
+  (function($base, $super, $parent_nesting) {
     var self = $klass($base, $super, 'Time');
 
-    var $nesting = [self].concat($parent_nesting), $Time_parse$1, $Time_iso8601$2;
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+    
+    $defs(self, '$parse', function $$parse(str) {
+      
+      return new Date(Date.parse(str));
+    }, 1);
+    $defs(self, '$def_formatter', function $$def_formatter(name, format, $kwargs) {
+      var on_utc, utc_tz, tz_format, fractions, on, self = this;
+
+      
+      
+      if ($kwargs == null) {
+        $kwargs = $hash2([], {});
+      } else if (!$kwargs.$$is_hash) {
+        throw Opal.ArgumentError.$new('expected kwargs');
+      };
+      
+      on_utc = $kwargs.$$smap["on_utc"];
+      if (on_utc == null) on_utc = false;
+      
+      utc_tz = $kwargs.$$smap["utc_tz"];
+      if (utc_tz == null) utc_tz = nil;
+      
+      tz_format = $kwargs.$$smap["tz_format"];
+      if (tz_format == null) tz_format = nil;
+      
+      fractions = $kwargs.$$smap["fractions"];
+      if (fractions == null) fractions = false;
+      
+      on = $kwargs.$$smap["on"];
+      if (on == null) on = self;
+      return $send(on, 'define_method', [name], function $$1(fdigits){var $a, $b, self = $$1.$$s == null ? this : $$1.$$s, $ret_or_2 = nil, $ret_or_1 = nil, date = nil, str = nil;
+
+        
+        
+        if (fdigits == null) fdigits = 0;;
+        if ($eqeqeq(($truthy(($ret_or_2 = (($a = $$$('::', 'DateTime', 'skip_raise')) ? 'constant' : nil))) ? ($$$('DateTime')) : ($ret_or_2)), ($ret_or_1 = self))) {
+          date = ($truthy(on_utc) ? (self.$new_offset(0)) : (self))
+        } else if ($eqeqeq(($truthy(($ret_or_2 = (($b = $$$('::', 'Date', 'skip_raise')) ? 'constant' : nil))) ? ($$$('Date')) : ($ret_or_2)), $ret_or_1)) {
+          date = $$$('Time').$utc(self.$year(), self.$month(), self.$day())
+        } else if ($eqeqeq($$$('Time'), $ret_or_1)) {
+          date = ($truthy(on_utc) ? (self.$getutc()) : (self))
+        } else {
+          nil
+        };
+        str = date.$strftime(format);
+        if (($truthy(fractions) && ($truthy($rb_gt(fdigits, 0))))) {
+          str = $rb_plus(str, date.$strftime(".%" + (fdigits) + "N"))
+        };
+        if ($truthy(utc_tz)) {
+          str = $rb_plus(str, ($truthy(self.$utc()) ? (utc_tz) : (date.$strftime(tz_format))))
+        } else if ($truthy(tz_format)) {
+          str = $rb_plus(str, date.$strftime(tz_format))
+        };
+        return str;}, {$$arity: -1, $$s: self});
+    }, -3);
+    self.$def_formatter("rfc2822", "%a, %d %b %Y %T ", $hash2(["utc_tz", "tz_format"], {"utc_tz": "-00:00", "tz_format": "%z"}));
+    $alias(self, "rfc822", "rfc2822");
+    self.$def_formatter("httpdate", "%a, %d %b %Y %T GMT", $hash2(["on_utc"], {"on_utc": true}));
+    self.$def_formatter("xmlschema", "%FT%T", $hash2(["utc_tz", "tz_format", "fractions"], {"utc_tz": "Z", "tz_format": "%:z", "fractions": true}));
+    $alias(self, "iso8601", "xmlschema");
+    
+    $def(self, '$to_date', function $$to_date() {
+      var self = this;
+
+      return $$('Date').$wrap(self)
+    }, 0);
+    
+    $def(self, '$to_datetime', function $$to_datetime() {
+      var self = this;
+
+      return $$('DateTime').$wrap(self)
+    }, 0);
+    return $def(self, '$to_time', function $$to_time() {
+      var self = this;
+
+      return self
+    }, 0);
+  })($nesting[0], null, $nesting);
+  return self.$require("date");
+};
+
+Opal.modules["date/date_time"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $def = Opal.def, $alias = Opal.alias, $rb_divide = Opal.rb_divide, $rb_times = Opal.rb_times, $rb_plus = Opal.rb_plus, $rb_minus = Opal.rb_minus, $truthy = Opal.truthy;
+
+  Opal.add_stubs('wrap,now,parse,new,def_delegators,/,usec,gmt_offset,*,+,-,is_a?,clone,_parse_offset,dup,year,month,day');
+  return (function($base, $super, $parent_nesting) {
+    var self = $klass($base, $super, 'DateTime');
+
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
+
+    $proto.date = nil;
+    
+    (function(self, $parent_nesting) {
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+      
+      
+      $def(self, '$now', function $$now() {
+        var self = this;
+
+        return self.$wrap($$('Time').$now())
+      }, 0);
+      return $def(self, '$parse', function $$parse(str) {
+        var self = this;
+
+        return self.$wrap($$('Time').$parse(str))
+      }, 1);
+    })(Opal.get_singleton_class(self), $nesting);
+    
+    $def(self, '$initialize', function $$initialize(year, month, day, hours, minutes, seconds, offset, start) {
+      var self = this;
 
+      
+      
+      if (year == null) year = -4712;;
+      
+      if (month == null) month = 1;;
+      
+      if (day == null) day = 1;;
+      
+      if (hours == null) hours = 0;;
+      
+      if (minutes == null) minutes = 0;;
+      
+      if (seconds == null) seconds = 0;;
+      
+      if (offset == null) offset = 0;;
+      
+      if (start == null) start = $$('ITALY');;
+      
+      // Because of Gregorian reform calendar goes from 1582-10-04 to 1582-10-15.
+      // All days in between end up as 4 october.
+      if (year === 1582 && month === 10 && day > 4 && day < 15) {
+        day = 4;
+      }
+    ;
+      self.date = $$('Time').$new(year, month, day, hours, minutes, seconds, offset);
+      return (self.start = start);
+    }, -1);
+    self.$def_delegators("@date", "min", "hour", "sec");
+    $alias(self, "minute", "min");
+    $alias(self, "second", "sec");
     
-    Opal.defs(self, '$parse', $Time_parse$1 = function $$parse(str) {
+    $def(self, '$sec_fraction', function $$sec_fraction() {
       var self = this;
 
+      return $rb_divide(self.date.$usec(), $$$('Rational').$new(1000000, 1))
+    }, 0);
+    $alias(self, "second_fraction", "sec_fraction");
+    
+    $def(self, '$offset', function $$offset() {
+      var self = this;
+
+      return $rb_divide(self.date.$gmt_offset(), $rb_times(24, $$$('Rational').$new(3600, 1)))
+    }, 0);
+    
+    $def(self, '$+', function $DateTime_$plus$1(other) {
+      var self = this;
+
+      return $$$('DateTime').$wrap($rb_plus(self.date, other))
+    }, 1);
+    
+    $def(self, '$-', function $DateTime_$minus$2(other) {
+      var self = this, result = nil;
+
+      
+      if (Opal.is_a(other, $$$('Date'))) other = other.date;
+      result = $rb_minus(self.date, other);
+      if ($truthy(result['$is_a?']($$$('Time')))) {
+        return $$$('DateTime').$wrap(result)
+      } else {
+        return result
+      };
+    }, 1);
+    
+    $def(self, '$new_offset', function $$new_offset(offset) {
+      var self = this, new_date = nil;
+
+      
+      new_date = self.$clone();
+      offset = $$('Time').$_parse_offset(offset);
+      new_date.date.timezone = offset;
+      return new_date;
+    }, 1);
+    
+    $def(self, '$to_datetime', function $$to_datetime() {
+      var self = this;
+
+      return self
+    }, 0);
+    
+    $def(self, '$to_time', function $$to_time() {
+      var self = this;
+
+      return self.date.$dup()
+    }, 0);
+    return $def(self, '$to_date', function $$to_date() {
+      var self = this;
+
+      return $$('Date').$new(self.$year(), self.$month(), self.$day())
+    }, 0);
+  })($nesting[0], $$('Date'), $nesting)
+};
+
+Opal.modules["date/formatters"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], $$ = Opal.$r($nesting), nil = Opal.nil, $klass = Opal.klass, $hash2 = Opal.hash2, $send = Opal.send, $to_a = Opal.to_a, $hash = Opal.hash, $defs = Opal.defs, $alias = Opal.alias;
+
+  Opal.add_stubs('def_formatter');
+  
+  (function($base, $super, $parent_nesting) {
+    var self = $klass($base, $super, 'Date');
+
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+    
+    $defs(self, '$def_formatter', function $$def_formatter($a, $b) {
+      var $post_args, $kwargs, args, kwargs, self = this;
+
+      
+      
+      $post_args = Opal.slice.call(arguments);
+      
+      $kwargs = Opal.extract_kwargs($post_args);
+      
+      if ($kwargs == null) {
+        $kwargs = $hash2([], {});
+      } else if (!$kwargs.$$is_hash) {
+        throw Opal.ArgumentError.$new('expected kwargs');
+      };
+      
+      args = $post_args;;
+      
+      kwargs = Opal.kwrestargs($kwargs, {});;
+      return $send($$('Time'), 'def_formatter', $to_a(args).concat([Opal.to_hash(kwargs).$merge($hash2(["on"], {"on": self}))]));
+    }, -1);
+    self.$def_formatter("asctime", "%c");
+    $alias(self, "ctime", "asctime");
+    self.$def_formatter("iso8601", "%F");
+    $alias(self, "xmlschema", "iso8601");
+    self.$def_formatter("rfc3339", "%FT%T%:z");
+    self.$def_formatter("rfc2822", "%a, %-d %b %Y %T %z");
+    $alias(self, "rfc822", "rfc2822");
+    self.$def_formatter("httpdate", "%a, %d %b %Y %T GMT", $hash2(["utc"], {"utc": true}));
+    self.$def_formatter("jisx0301", "%J");
+    return $alias(self, "to_s", "iso8601");
+  })($nesting[0], null, $nesting);
+  return (function($base, $super) {
+    var self = $klass($base, $super, 'DateTime');
+
+    
+    
+    self.$def_formatter("xmlschema", "%FT%T", $hash2(["fractions", "tz_format"], {"fractions": true, "tz_format": "%:z"}));
+    $alias(self, "iso8601", "xmlschema");
+    $alias(self, "rfc3339", "xmlschema");
+    self.$def_formatter("jisx0301", "%JT%T", $hash2(["fractions", "tz_format"], {"fractions": true, "tz_format": "%:z"}));
+    $alias(self, "to_s", "xmlschema");
+    return self.$def_formatter("zone", "%:z");
+  })($nesting[0], $$('Date'));
+};
+
+Opal.modules["date"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $const_set = Opal.const_set, $rb_plus = Opal.rb_plus, $def = Opal.def, $send = Opal.send, $alias = Opal.alias, $rb_minus = Opal.rb_minus, $truthy = Opal.truthy, $rb_lt = Opal.rb_lt, $rb_times = Opal.rb_times, $defs = Opal.defs;
+
+  Opal.add_stubs('require,include,extend,new,-@,+,allocate,join,compact,map,to_proc,downcase,wrap,raise,attr_reader,<=>,jd,===,<<,prev_month,dup,def_delegators,clone,prev_day,next_day,_days_in_month,class,-,year,month,day,prev_year,to_s,strftime,to_i,<,*,reverse,step,abs,each');
+  
+  self.$require("forwardable");
+  self.$require("date/infinity");
+  self.$require("time");
+  (function($base, $super, $parent_nesting) {
+    var self = $klass($base, $super, 'Date');
+
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting), $proto = self.$$prototype;
+
+    $proto.date = $proto.start = nil;
+    
+    self.$include($$('Comparable'));
+    self.$extend($$('Forwardable'));
+    $const_set($nesting[0], 'JULIAN', $$('Infinity').$new());
+    $const_set($nesting[0], 'GREGORIAN', $$('Infinity').$new()['$-@']());
+    $const_set($nesting[0], 'ITALY', 2299161);
+    $const_set($nesting[0], 'ENGLAND', 2361222);
+    $const_set($nesting[0], 'MONTHNAMES', $rb_plus([nil], ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"]));
+    $const_set($nesting[0], 'ABBR_MONTHNAMES', ["jan", "feb", "mar", "apr", "may", "jun", "jul", "aug", "sep", "oct", "nov", "dec"]);
+    $const_set($nesting[0], 'DAYNAMES', ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"]);
+    $const_set($nesting[0], 'ABBR_DAYNAMES', ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"]);
+    (function(self, $parent_nesting) {
+      var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+      
+      
+      $def(self, '$wrap', function $$wrap(native$) {
+        var self = this, instance = nil;
+
+        
+        instance = self.$allocate();
+        instance.start = $$('ITALY');
+        instance.date = native$;
+        return instance;
+      }, 1);
+      
+      $def(self, '$parse', function $$parse(string, comp) {
+        var self = this;
+
+        
+        
+        if (comp == null) comp = true;;
+        
+        var current_date = new Date();
+
+        var current_day = current_date.getDate(),
+            current_month = current_date.getMonth(),
+            current_year = current_date.getFullYear(),
+            current_wday = current_date.getDay(),
+            full_month_name_regexp = $$('MONTHNAMES').$compact().$join("|");
+
+        function match1(match) { return match[1]; }
+        function match2(match) { return match[2]; }
+        function match3(match) { return match[3]; }
+        function match4(match) { return match[4]; }
+
+        // Converts passed short year (0..99)
+        // to a 4-digits year in the range (1969..2068)
+        function fromShortYear(fn) {
+          return function(match) {
+            var short_year = fn(match);
+
+            if (short_year >= 69) {
+              short_year += 1900;
+            } else {
+              short_year += 2000;
+            }
+            return short_year;
+          }
+        }
+
+        // Converts month abbr (nov) to a month number
+        function fromMonthAbbr(fn) {
+          return function(match) {
+            var abbr = fn(match).toLowerCase();
+            return $$('ABBR_MONTHNAMES').indexOf(abbr) + 1;
+          }
+        }
+
+        function toInt(fn) {
+          return function(match) {
+            var value = fn(match);
+            return parseInt(value, 10);
+          }
+        }
+
+        // Depending on the 'comp' value appends 20xx to a passed year
+        function to2000(fn) {
+          return function(match) {
+            var value = fn(match);
+            if (comp) {
+              return value + 2000;
+            } else {
+              return value;
+            }
+          }
+        }
+
+        // Converts passed week day name to a day number
+        function fromDayName(fn) {
+          return function(match) {
+            var dayname = fn(match),
+                wday = $send($$('DAYNAMES'), 'map', [], "downcase".$to_proc()).indexOf((dayname).$downcase());
+
+            return current_day - current_wday + wday;
+          }
+        }
+
+        // Converts passed month name to a month number
+        function fromFullMonthName(fn) {
+          return function(match) {
+            var month_name = fn(match);
+            return $send($$('MONTHNAMES').$compact(), 'map', [], "downcase".$to_proc()).indexOf((month_name).$downcase()) + 1;
+          }
+        }
+
+        var rules = [
+          {
+            // DD as month day number
+            regexp: /^(\d{2})$/,
+            year: current_year,
+            month: current_month,
+            day: toInt(match1)
+          },
+          {
+            // DDD as year day number
+            regexp: /^(\d{3})$/,
+            year: current_year,
+            month: 0,
+            day: toInt(match1)
+          },
+          {
+            // MMDD as month and day
+            regexp: /^(\d{2})(\d{2})$/,
+            year: current_year,
+            month: toInt(match1),
+            day: toInt(match2)
+          },
+          {
+            // YYDDD as year and day number in 1969--2068
+            regexp: /^(\d{2})(\d{3})$/,
+            year: fromShortYear(toInt(match1)),
+            month: 0,
+            day: toInt(match2)
+          },
+          {
+            // YYMMDD as year, month and day in 1969--2068
+            regexp: /^(\d{2})(\d{2})(\d{2})$/,
+            year: fromShortYear(toInt(match1)),
+            month: toInt(match2),
+            day: toInt(match3)
+          },
+          {
+            // YYYYDDD as year and day number
+            regexp: /^(\d{4})(\d{3})$/,
+            year: toInt(match1),
+            month: 0,
+            day: toInt(match2)
+          },
+          {
+            // YYYYMMDD as year, month and day number
+            regexp: /^(\d{4})(\d{2})(\d{2})$/,
+            year: toInt(match1),
+            month: toInt(match2),
+            day: toInt(match3)
+          },
+          {
+            // mmm YYYY
+            regexp: /^([a-z]{3})[\s\.\/\-](\d{3,4})$/,
+            year: toInt(match2),
+            month: fromMonthAbbr(match1),
+            day: 1
+          },
+          {
+            // DD mmm YYYY
+            regexp: /^(\d{1,2})[\s\.\/\-]([a-z]{3})[\s\.\/\-](\d{3,4})$/i,
+            year: toInt(match3),
+            month: fromMonthAbbr(match2),
+            day: toInt(match1)
+          },
+          {
+            // mmm DD YYYY
+            regexp: /^([a-z]{3})[\s\.\/\-](\d{1,2})[\s\.\/\-](\d{3,4})$/i,
+            year: toInt(match3),
+            month: fromMonthAbbr(match1),
+            day: toInt(match2)
+          },
+          {
+            // YYYY mmm DD
+            regexp: /^(\d{3,4})[\s\.\/\-]([a-z]{3})[\s\.\/\-](\d{1,2})$/i,
+            year: toInt(match1),
+            month: fromMonthAbbr(match2),
+            day: toInt(match3)
+          },
+          {
+            // YYYY-MM-DD YYYY/MM/DD YYYY.MM.DD
+            regexp: /^(\-?\d{3,4})[\s\.\/\-](\d{1,2})[\s\.\/\-](\d{1,2})$/,
+            year: toInt(match1),
+            month: toInt(match2),
+            day: toInt(match3)
+          },
+          {
+            // YY-MM-DD
+            regexp: /^(\d{2})[\s\.\/\-](\d{1,2})[\s\.\/\-](\d{1,2})$/,
+            year: to2000(toInt(match1)),
+            month: toInt(match2),
+            day: toInt(match3)
+          },
+          {
+            // DD-MM-YYYY
+            regexp: /^(\d{1,2})[\s\.\/\-](\d{1,2})[\s\.\/\-](\-?\d{3,4})$/,
+            year: toInt(match3),
+            month: toInt(match2),
+            day: toInt(match1)
+          },
+          {
+            // ddd
+            regexp: new RegExp("^(" + $$('DAYNAMES').$join("|") + ")$", 'i'),
+            year: current_year,
+            month: current_month,
+            day: fromDayName(match1)
+          },
+          {
+            // monthname daynumber YYYY
+            regexp: new RegExp("^(" + full_month_name_regexp + ")[\\s\\.\\/\\-](\\d{1,2})(th|nd|rd)[\\s\\.\\/\\-](\\-?\\d{3,4})$", "i"),
+            year: toInt(match4),
+            month: fromFullMonthName(match1),
+            day: toInt(match2)
+          },
+          {
+            // monthname daynumber
+            regexp: new RegExp("^(" + full_month_name_regexp + ")[\\s\\.\\/\\-](\\d{1,2})(th|nd|rd)", "i"),
+            year: current_year,
+            month: fromFullMonthName(match1),
+            day: toInt(match2)
+          },
+          {
+            // daynumber monthname YYYY
+            regexp: new RegExp("^(\\d{1,2})(th|nd|rd)[\\s\\.\\/\\-](" + full_month_name_regexp + ")[\\s\\.\\/\\-](\\-?\\d{3,4})$", "i"),
+            year: toInt(match4),
+            month: fromFullMonthName(match3),
+            day: toInt(match1)
+          },
+          {
+            // YYYY monthname daynumber
+            regexp: new RegExp("^(\\-?\\d{3,4})[\\s\\.\\/\\-](" + full_month_name_regexp + ")[\\s\\.\\/\\-](\\d{1,2})(th|nd|rd)$", "i"),
+            year: toInt(match1),
+            month: fromFullMonthName(match2),
+            day: toInt(match3)
+          }
+        ]
+
+        var rule, i, match;
+
+        for (i = 0; i < rules.length; i++) {
+          rule = rules[i];
+          match = rule.regexp.exec(string);
+          if (match) {
+            var year = rule.year;
+            if (typeof(year) === 'function') {
+              year = year(match);
+            }
+
+            var month = rule.month;
+            if (typeof(month) === 'function') {
+              month = month(match) - 1
+            }
+
+            var day = rule.day;
+            if (typeof(day) === 'function') {
+              day = day(match);
+            }
+
+            var result = new Date(year, month, day);
+
+            // an edge case, JS can't handle 'new Date(1)', minimal year is 1970
+            if (year >= 0 && year <= 1970) {
+              result.setFullYear(year);
+            }
+
+            return self.$wrap(result);
+          }
+        }
+      ;
+        return self.$raise($$('ArgumentError'), "invalid date");
+      }, -2);
+      
+      $def(self, '$today', function $$today() {
+        var self = this;
+
+        return self.$wrap(new Date())
+      }, 0);
+      
+      $def(self, '$gregorian_leap?', function $gregorian_leap$ques$1(year) {
+        
+        return (new Date(year, 1, 29).getMonth()-1) === 0
+      }, 1);
+      return $alias(self, "civil", "new");
+    })(Opal.get_singleton_class(self), $nesting);
+    
+    $def(self, '$initialize', function $$initialize(year, month, day, start) {
+      var self = this;
+
+      
+      
+      if (year == null) year = -4712;;
+      
+      if (month == null) month = 1;;
+      
+      if (day == null) day = 1;;
+      
+      if (start == null) start = $$('ITALY');;
+      
+      // Because of Gregorian reform calendar goes from 1582-10-04 to 1582-10-15.
+      // All days in between end up as 4 october.
+      if (year === 1582 && month === 10 && day > 4 && day < 15) {
+        day = 4;
+      }
+    ;
+      self.date = new Date(year, month - 1, day);
+      return (self.start = start);
+    }, -1);
+    self.$attr_reader("start");
+    
+    $def(self, '$<=>', function $Date_$lt_eq_gt$2(other) {
+      var self = this;
+
+      
+      if (other.$$is_number) {
+        return self.$jd()['$<=>'](other)
+      }
+
+      if ($$$('Date')['$==='](other)) {
+        var a = self.date, b = other.date;
+        if (!Opal.is_a(self, $$$('DateTime'))) a.setHours(0, 0, 0, 0);
+        if (!Opal.is_a(other, $$$('DateTime'))) b.setHours(0, 0, 0, 0);
+
+        if (a < b) {
+          return -1;
+        }
+        else if (a > b) {
+          return 1;
+        }
+        else {
+          return 0;
+        }
+      } else {
+        return nil;
+      }
+    
+    }, 1);
+    
+    $def(self, '$>>', function $Date_$gt$gt$3(n) {
+      var self = this;
+
+      
+      if (!n.$$is_number) self.$raise($$$('TypeError'));
+      return self['$<<'](n['$-@']());
+    }, 1);
+    
+    $def(self, '$<<', function $Date_$lt$lt$4(n) {
+      var self = this;
+
+      
+      if (!n.$$is_number) self.$raise($$$('TypeError'));
+      return self.$prev_month(n);
+    }, 1);
+    
+    $def(self, '$clone', function $$clone() {
+      var self = this, date = nil;
+
+      
+      date = $$('Date').$wrap(self.date.$dup());
+      date.start = self.start;
+      return date;
+    }, 0);
+    self.$def_delegators("@date", "sunday?", "monday?", "tuesday?", "wednesday?", "thursday?", "friday?", "saturday?", "day", "month", "year", "wday", "yday");
+    $alias(self, "mday", "day");
+    $alias(self, "mon", "month");
+    
+    $def(self, '$jd', function $$jd() {
+      var self = this;
+
+      
+    //Adapted from http://www.physics.sfasu.edu/astro/javascript/julianday.html
+
+    var mm = self.date.getMonth() + 1,
+        dd = self.date.getDate(),
+        yy = self.date.getFullYear(),
+        hr = 12, mn = 0, sc = 0,
+        ggg, s, a, j1, jd;
+
+    hr = hr + (mn / 60) + (sc/3600);
+
+    ggg = 1;
+    if (yy <= 1585) {
+      ggg = 0;
+    }
+
+    jd = -1 * Math.floor(7 * (Math.floor((mm + 9) / 12) + yy) / 4);
+
+    s = 1;
+    if ((mm - 9) < 0) {
+      s =- 1;
+    }
+
+    a = Math.abs(mm - 9);
+    j1 = Math.floor(yy + s * Math.floor(a / 7));
+    j1 = -1 * Math.floor((Math.floor(j1 / 100) + 1) * 3 / 4);
+
+    jd = jd + Math.floor(275 * mm / 9) + dd + (ggg * j1);
+    jd = jd + 1721027 + 2 * ggg + 367 * yy - 0.5;
+    jd = jd + (hr / 24);
+
+    return jd;
+    
+    }, 0);
+    
+    $def(self, '$julian?', function $Date_julian$ques$5() {
+      var self = this;
+
+      return self.date < new Date(1582, 10 - 1, 15, 12)
+    }, 0);
+    
+    $def(self, '$new_start', function $$new_start(start) {
+      var self = this, new_date = nil;
+
+      
+      new_date = self.$clone();
+      new_date.start = start;
+      return new_date;
+    }, 1);
+    
+    $def(self, '$next', function $$next() {
+      var self = this;
+
+      return $rb_plus(self, 1)
+    }, 0);
+    
+    $def(self, '$-', function $Date_$minus$6(date) {
+      var self = this;
+
+      
+      
+      if (date.date) {
+        return Math.round((self.date - date.date) / (1000 * 60 * 60 * 24));
+      }
+    ;
+      return self.$prev_day(date);
+    }, 1);
+    
+    $def(self, '$+', function $Date_$plus$7(date) {
+      var self = this;
+
+      return self.$next_day(date)
+    }, 1);
+    
+    $def(self, '$prev_day', function $$prev_day(n) {
+      var self = this;
+
+      
+      
+      if (n == null) n = 1;;
+      
+      if (n.$$is_number) {
+        var result = self.$clone();
+        result.date.setDate(self.date.getDate() - n);
+        return result;
+      }
+      else {
+        self.$raise($$$('TypeError'));
+      }
+    ;
+    }, -1);
+    
+    $def(self, '$next_day', function $$next_day(n) {
+      var self = this;
+
+      
+      
+      if (n == null) n = 1;;
+      if (!n.$$is_number) self.$raise($$$('TypeError'));
+      return self.$prev_day(n['$-@']());
+    }, -1);
+    
+    $def(self, '$prev_month', function $$prev_month(n) {
+      var self = this;
+
+      
+      
+      if (n == null) n = 1;;
+      
+      if (!n.$$is_number) self.$raise($$$('TypeError'))
+      var result = self.$clone(), date = result.date, cur = date.getDate();
+      date.setDate(1);
+      date.setMonth(date.getMonth() - n);
+      date.setDate(Math.min(cur, $$('Date').$_days_in_month(date.getFullYear(), date.getMonth())));
+      return result;
+    ;
+    }, -1);
+    
+    $def(self, '$next_month', function $$next_month(n) {
+      var self = this;
+
+      
+      
+      if (n == null) n = 1;;
+      if (!n.$$is_number) self.$raise($$$('TypeError'));
+      return self.$prev_month(n['$-@']());
+    }, -1);
+    
+    $def(self, '$prev_year', function $$prev_year(years) {
+      var self = this;
+
+      
+      
+      if (years == null) years = 1;;
+      if (!years.$$is_number) self.$raise($$$('TypeError'));
+      return self.$class().$new($rb_minus(self.$year(), years), self.$month(), self.$day());
+    }, -1);
+    
+    $def(self, '$next_year', function $$next_year(years) {
+      var self = this;
+
+      
+      
+      if (years == null) years = 1;;
+      if (!years.$$is_number) self.$raise($$$('TypeError'));
+      return self.$prev_year(years['$-@']());
+    }, -1);
+    
+    $def(self, '$strftime', function $$strftime(format) {
+      var self = this;
+
+      
+      
+      if (format == null) format = "";;
+      
+      if (format == '') {
+        return self.$to_s();
+      }
+
+      return self.date.$strftime(format)
+    ;
+    }, -1);
+    
+    $def(self, '$to_s', function $$to_s() {
+      var self = this;
+
+      
+      var d = self.date, year = d.getFullYear(), month = d.getMonth() + 1, day = d.getDate();
+      if (month < 10) { month = '0' + month; }
+      if (day < 10) { day = '0' + day; }
+      return year + '-' + month + '-' + day;
+    
+    }, 0);
+    
+    $def(self, '$to_time', function $$to_time() {
+      var self = this;
+
+      return $$('Time').$new(self.$year(), self.$month(), self.$day())
+    }, 0);
+    
+    $def(self, '$to_date', function $$to_date() {
+      var self = this;
+
+      return self
+    }, 0);
+    
+    $def(self, '$to_datetime', function $$to_datetime() {
+      var self = this;
+
+      return $$('DateTime').$new(self.$year(), self.$month(), self.$day())
+    }, 0);
+    
+    $def(self, '$to_n', function $$to_n() {
+      var self = this;
+
+      return self.date
+    }, 0);
+    
+    $def(self, '$step', function $$step(limit, step) {
+      var block = $$step.$$p || nil, self = this, steps_count = nil, steps = nil, result = nil;
+
+      delete $$step.$$p;
+      
+      ;
+      
+      if (step == null) step = 1;;
+      steps_count = $rb_minus(limit, self).$to_i();
+      steps = ($truthy($rb_lt($rb_times(steps_count, step), 0)) ? ([]) : ($truthy($rb_lt(steps_count, 0)) ? ($send(Opal.Range.$new(0, steps_count['$-@'](), false).$step(step.$abs()), 'map', [], "-@".$to_proc()).$reverse()) : (Opal.Range.$new(0, steps_count, false).$step(step.$abs()))));
+      result = $send(steps, 'map', [], function $$8(i){var self = $$8.$$s == null ? this : $$8.$$s;
+
+        
+        
+        if (i == null) i = nil;;
+        return $rb_plus(self, i);}, {$$arity: 1, $$s: self});
+      if ((block !== nil)) {
+        
+        $send(result, 'each', [], function $$9(i){
+          
+          
+          if (i == null) i = nil;;
+          return Opal.yield1(block, i);;}, 1);
+        return self;
+      } else {
+        return result
+      };
+    }, -2);
+    
+    $def(self, '$upto', function $$upto(max) {
+      var block = $$upto.$$p || nil, self = this;
+
+      delete $$upto.$$p;
+      
+      ;
+      return $send(self, 'step', [max, 1], block.$to_proc());
+    }, 1);
+    
+    $def(self, '$downto', function $$downto(min) {
+      var block = $$downto.$$p || nil, self = this;
+
+      delete $$downto.$$p;
+      
+      ;
+      return $send(self, 'step', [min, -1], block.$to_proc());
+    }, 1);
+    
+    $def(self, '$cwday', function $$cwday() {
+      var self = this;
+
+      return self.date.getDay() || 7
+    }, 0);
+    
+    $def(self, '$cweek', function $$cweek() {
+      var self = this;
+
+      
+      var d = new Date(self.date);
+      d.setHours(0,0,0);
+      d.setDate(d.getDate()+4-(d.getDay()||7));
+      return Math.ceil((((d-new Date(d.getFullYear(),0,1))/8.64e7)+1)/7);
+    
+    }, 0);
+    $defs(self, '$_days_in_month', function $$_days_in_month(year, month) {
+      
+      
+      var leap = ((year % 4 === 0 && year % 100 !== 0) || year % 400 === 0);
+      return [31, (leap ? 29 : 28), 31, 30, 31, 30, 31, 31, 30, 31, 30, 31][month];
+    
+    }, 2);
+    $alias(self, "eql?", "==");
+    return $alias(self, "succ", "next");
+  })($nesting[0], null, $nesting);
+  self.$require("date/date_time");
+  return self.$require("date/formatters");
+};
+
+Opal.modules["time"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $klass = Opal.klass, $defs = Opal.defs, $hash2 = Opal.hash2, $send = Opal.send, $eqeqeq = Opal.eqeqeq, $truthy = Opal.truthy, $rb_gt = Opal.rb_gt, $rb_plus = Opal.rb_plus, $alias = Opal.alias, $def = Opal.def;
+
+  Opal.add_stubs('define_method,===,new_offset,utc,year,month,day,getutc,strftime,>,+,def_formatter,wrap,require');
+  
+  (function($base, $super, $parent_nesting) {
+    var self = $klass($base, $super, 'Time');
+
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+    
+    $defs(self, '$parse', function $$parse(str) {
+      
       return new Date(Date.parse(str));
-    }, $Time_parse$1.$$arity = 1);
-    return (Opal.def(self, '$iso8601', $Time_iso8601$2 = function $$iso8601() {
+    }, 1);
+    $defs(self, '$def_formatter', function $$def_formatter(name, format, $kwargs) {
+      var on_utc, utc_tz, tz_format, fractions, on, self = this;
+
+      
+      
+      if ($kwargs == null) {
+        $kwargs = $hash2([], {});
+      } else if (!$kwargs.$$is_hash) {
+        throw Opal.ArgumentError.$new('expected kwargs');
+      };
+      
+      on_utc = $kwargs.$$smap["on_utc"];
+      if (on_utc == null) on_utc = false;
+      
+      utc_tz = $kwargs.$$smap["utc_tz"];
+      if (utc_tz == null) utc_tz = nil;
+      
+      tz_format = $kwargs.$$smap["tz_format"];
+      if (tz_format == null) tz_format = nil;
+      
+      fractions = $kwargs.$$smap["fractions"];
+      if (fractions == null) fractions = false;
+      
+      on = $kwargs.$$smap["on"];
+      if (on == null) on = self;
+      return $send(on, 'define_method', [name], function $$1(fdigits){var $a, $b, self = $$1.$$s == null ? this : $$1.$$s, $ret_or_2 = nil, $ret_or_1 = nil, date = nil, str = nil;
+
+        
+        
+        if (fdigits == null) fdigits = 0;;
+        if ($eqeqeq(($truthy(($ret_or_2 = (($a = $$$('::', 'DateTime', 'skip_raise')) ? 'constant' : nil))) ? ($$$('DateTime')) : ($ret_or_2)), ($ret_or_1 = self))) {
+          date = ($truthy(on_utc) ? (self.$new_offset(0)) : (self))
+        } else if ($eqeqeq(($truthy(($ret_or_2 = (($b = $$$('::', 'Date', 'skip_raise')) ? 'constant' : nil))) ? ($$$('Date')) : ($ret_or_2)), $ret_or_1)) {
+          date = $$$('Time').$utc(self.$year(), self.$month(), self.$day())
+        } else if ($eqeqeq($$$('Time'), $ret_or_1)) {
+          date = ($truthy(on_utc) ? (self.$getutc()) : (self))
+        } else {
+          nil
+        };
+        str = date.$strftime(format);
+        if (($truthy(fractions) && ($truthy($rb_gt(fdigits, 0))))) {
+          str = $rb_plus(str, date.$strftime(".%" + (fdigits) + "N"))
+        };
+        if ($truthy(utc_tz)) {
+          str = $rb_plus(str, ($truthy(self.$utc()) ? (utc_tz) : (date.$strftime(tz_format))))
+        } else if ($truthy(tz_format)) {
+          str = $rb_plus(str, date.$strftime(tz_format))
+        };
+        return str;}, {$$arity: -1, $$s: self});
+    }, -3);
+    self.$def_formatter("rfc2822", "%a, %d %b %Y %T ", $hash2(["utc_tz", "tz_format"], {"utc_tz": "-00:00", "tz_format": "%z"}));
+    $alias(self, "rfc822", "rfc2822");
+    self.$def_formatter("httpdate", "%a, %d %b %Y %T GMT", $hash2(["on_utc"], {"on_utc": true}));
+    self.$def_formatter("xmlschema", "%FT%T", $hash2(["utc_tz", "tz_format", "fractions"], {"utc_tz": "Z", "tz_format": "%:z", "fractions": true}));
+    $alias(self, "iso8601", "xmlschema");
+    
+    $def(self, '$to_date', function $$to_date() {
       var self = this;
 
-      return self.$strftime("%FT%T%z")
-    }, $Time_iso8601$2.$$arity = 0), nil) && 'iso8601';
-  })($nesting[0], null, $nesting)
+      return $$('Date').$wrap(self)
+    }, 0);
+    
+    $def(self, '$to_datetime', function $$to_datetime() {
+      var self = this;
+
+      return $$('DateTime').$wrap(self)
+    }, 0);
+    return $def(self, '$to_time', function $$to_time() {
+      var self = this;
+
+      return self
+    }, 0);
+  })($nesting[0], null, $nesting);
+  return self.$require("date");
 };
diff --git a/opal/master/time.min.js b/opal/master/time.min.js
index aaffd7aa..59aaa288 100644
--- a/opal/master/time.min.js
+++ b/opal/master/time.min.js
@@ -1 +1 @@
-Opal.modules.time=function(Opal){Opal.top;var $nesting=[],nil=Opal.nil,$klass=(Opal.$$$,Opal.$$,Opal.klass);return Opal.add_stubs(["$strftime"]),function($Time_iso8601$2,$Time_parse$1){$Time_iso8601$2=$klass($Time_iso8601$2,null,"Time"),[$Time_iso8601$2].concat($Time_parse$1);return Opal.defs($Time_iso8601$2,"$parse",$Time_parse$1=function(str){return new Date(Date.parse(str))},$Time_parse$1.$$arity=1),Opal.def($Time_iso8601$2,"$iso8601",$Time_iso8601$2=function(){return this.$strftime("%FT%T%z")},$Time_iso8601$2.$$arity=0),nil&&"iso8601"}($nesting[0],$nesting)};
+Opal.modules.forwardable=function(Opal){var self,$nesting=[],nil=Opal.nil,$module=Opal.module,$send=Opal.send,$truthy=Opal.truthy,$def=Opal.def,$to_a=Opal.to_a,$alias=Opal.alias;return Opal.add_stubs("each,respond_to?,def_instance_delegator,include?,start_with?,to_s,define_method,__send__,instance_variable_get,to_proc,def_single_delegator,define_singleton_method"),self=$module($nesting[0],"Forwardable"),$def(self,"$instance_delegate",(function(hash){return $send(hash,"each",[],(function $$1(methods,accessor){var self=null==$$1.$$s?this:$$1.$$s;return null==methods&&(methods=nil),null==accessor&&(accessor=nil),$truthy(methods["$respond_to?"]("each"))||(methods=[methods]),$send(methods,"each",[],(function $$2(method){return null==method&&(method=nil),(null==$$2.$$s?this:$$2.$$s).$def_instance_delegator(accessor,method)}),{$$arity:1,$$s:self})}),{$$arity:2,$$s:this})}),1),$def(self,"$def_instance_delegators",(function(accessor,$a){var $post_args,self=this;return $post_args=Opal.slice.call(arguments,1),$send($post_args,"each",[],(function $$3(method){var self=null==$$3.$$s?this:$$3.$$s;return null==method&&(method=nil),$truthy(["__send__","__id__"]["$include?"](method))?nil:self.$def_instance_delegator(accessor,method)}),{$$arity:1,$$s:self})}),-2),$def(self,"$def_instance_delegator",(function $$def_instance_delegator(accessor,method,ali){return delete $$def_instance_delegator.$$p,null==ali&&(ali=method),$truthy(accessor.$to_s()["$start_with?"]("@"))?$send(this,"define_method",[ali],(function $$4($a){var args,block=$$4.$$p||nil,self=null==$$4.$$s?this:$$4.$$s;return delete $$4.$$p,args=Opal.slice.call(arguments),$send(self.$instance_variable_get(accessor),"__send__",[method].concat($to_a(args)),block.$to_proc())}),{$$arity:-1,$$s:this}):$send(this,"define_method",[ali],(function $$5($a){var args,block=$$5.$$p||nil,self=null==$$5.$$s?this:$$5.$$s;return delete $$5.$$p,args=Opal.slice.call(arguments),$send(self.$__send__(accessor),"__send__",[method].concat($to_a(args)),block.$to_proc())}),{$$arity:-1,$$s:this})}),-3),$alias(self,"delegate","instance_delegate"),$alias(self,"def_delegators","def_instance_delegators"),$alias(self,"def_delegator","def_instance_delegator"),function($base){var self=$module($base,"SingleForwardable");return $def(self,"$single_delegate",(function(hash){return $send(hash,"each",[],(function $$6(methods,accessor){var self=null==$$6.$$s?this:$$6.$$s;return null==methods&&(methods=nil),null==accessor&&(accessor=nil),$truthy(methods["$respond_to?"]("each"))||(methods=[methods]),$send(methods,"each",[],(function $$7(method){return null==method&&(method=nil),(null==$$7.$$s?this:$$7.$$s).$def_single_delegator(accessor,method)}),{$$arity:1,$$s:self})}),{$$arity:2,$$s:this})}),1),$def(self,"$def_single_delegators",(function(accessor,$a){var $post_args,self=this;return $post_args=Opal.slice.call(arguments,1),$send($post_args,"each",[],(function $$8(method){var self=null==$$8.$$s?this:$$8.$$s;return null==method&&(method=nil),$truthy(["__send__","__id__"]["$include?"](method))?nil:self.$def_single_delegator(accessor,method)}),{$$arity:1,$$s:self})}),-2),$def(self,"$def_single_delegator",(function $$def_single_delegator(accessor,method,ali){return delete $$def_single_delegator.$$p,null==ali&&(ali=method),$truthy(accessor.$to_s()["$start_with?"]("@"))?$send(this,"define_singleton_method",[ali],(function $$9($a){var args,block=$$9.$$p||nil,self=null==$$9.$$s?this:$$9.$$s;return delete $$9.$$p,args=Opal.slice.call(arguments),$send(self.$instance_variable_get(accessor),"__send__",[method].concat($to_a(args)),block.$to_proc())}),{$$arity:-1,$$s:this}):$send(this,"define_singleton_method",[ali],(function $$10($a){var args,block=$$10.$$p||nil,self=null==$$10.$$s?this:$$10.$$s;return delete $$10.$$p,args=Opal.slice.call(arguments),$send(self.$__send__(accessor),"__send__",[method].concat($to_a(args)),block.$to_proc())}),{$$arity:-1,$$s:this})}),-3),$alias(self,"delegate","single_delegate"),$alias(self,"def_delegators","def_single_delegators"),$alias(self,"def_delegator","def_single_delegator")}($nesting[0])},Opal.modules["date/infinity"]=function(Opal){var $nesting=[],nil=Opal.nil,$$$=Opal.$$$,$klass=Opal.klass,$def=Opal.def,$eqeqeq=Opal.eqeqeq,$to_ary=Opal.to_ary,$send2=Opal.send2,$find_super=Opal.find_super,$eqeq=Opal.eqeq,$truthy=Opal.truthy,$rb_gt=Opal.rb_gt;return Opal.add_stubs("include,<=>,attr_reader,nonzero?,d,zero?,new,class,-@,+@,===,coerce,==,>"),function($base,$super,$parent_nesting){var $nesting=[$klass($base,null,"Date")].concat($parent_nesting),$$=Opal.$r($nesting);return function($base,$super,$parent_nesting){var self=$klass($base,$super,"Infinity"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return self.$$prototype.d=nil,self.$include($$("Comparable")),$def(self,"$initialize",(function(d){return null==d&&(d=1),this.d=d["$<=>"](0)}),-1),self.$attr_reader("d"),$def(self,"$zero?",(function(){return!1}),0),$def(self,"$finite?",(function(){return!1}),0),$def(self,"$infinite?",(function(){return this.$d()["$nonzero?"]()}),0),$def(self,"$nan?",(function(){return this.$d()["$zero?"]()}),0),$def(self,"$abs",(function(){return this.$class().$new()}),0),$def(self,"$-@",(function(){return this.$class().$new(this.$d()["$-@"]())}),0),$def(self,"$+@",(function(){return this.$class().$new(this.$d()["$+@"]())}),0),$def(self,"$<=>",(function(other){var $a,$b,$ret_or_1,l=nil,r=nil;if($eqeqeq($$("Infinity"),$ret_or_1=other))return this.$d()["$<=>"](other.$d());if($eqeqeq($$("Numeric"),$ret_or_1))return this.$d();try{return $b=other.$coerce(this),l=null==($a=$to_ary($b))[0]?nil:$a[0],r=null==$a[1]?nil:$a[1],l["$<=>"](r)}catch($err){if(!Opal.rescue($err,[$$("NoMethodError")]))throw $err;try{return nil}finally{Opal.pop_exception()}}}),1),$def(self,"$coerce",(function $$coerce(other){var $yield=$$coerce.$$p||nil;return delete $$coerce.$$p,$eqeqeq($$("Numeric"),other)?[this.$d()["$-@"](),this.$d()]:$send2(this,$find_super(this,"coerce",$$coerce,!1,!0),"coerce",[other],$yield)}),1),$def(self,"$to_f",(function(){return $eqeq(this.d,0)?0:$truthy($rb_gt(this.d,0))?$$$($$("Float"),"INFINITY"):$$$($$("Float"),"INFINITY")["$-@"]()}),0)}($nesting[0],$$("Numeric"),$nesting)}($nesting[0],0,$nesting)},Opal.modules.time=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$klass=Opal.klass,$defs=Opal.defs,$hash2=Opal.hash2,$send=Opal.send,$eqeqeq=Opal.eqeqeq,$truthy=Opal.truthy,$rb_gt=Opal.rb_gt,$rb_plus=Opal.rb_plus,$alias=Opal.alias,$def=Opal.def;return Opal.add_stubs("define_method,===,new_offset,utc,year,month,day,getutc,strftime,>,+,def_formatter,wrap,require"),function($base,$super,$parent_nesting){var self=$klass($base,null,"Time"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);$defs(self,"$parse",(function(str){return new Date(Date.parse(str))}),1),$defs(self,"$def_formatter",(function(name,format,$kwargs){var on_utc,utc_tz,tz_format,fractions,on;if(null==$kwargs)$kwargs=$hash2([],{});else if(!$kwargs.$$is_hash)throw Opal.ArgumentError.$new("expected kwargs");return null==(on_utc=$kwargs.$$smap.on_utc)&&(on_utc=!1),null==(utc_tz=$kwargs.$$smap.utc_tz)&&(utc_tz=nil),null==(tz_format=$kwargs.$$smap.tz_format)&&(tz_format=nil),null==(fractions=$kwargs.$$smap.fractions)&&(fractions=!1),null==(on=$kwargs.$$smap.on)&&(on=this),$send(on,"define_method",[name],(function $$1(fdigits){var $ret_or_1,self=null==$$1.$$s?this:$$1.$$s,$ret_or_2=nil,date=nil,str=nil;return null==fdigits&&(fdigits=0),$eqeqeq($truthy($ret_or_2=$$$("::","DateTime","skip_raise")?"constant":nil)?$$$("DateTime"):$ret_or_2,$ret_or_1=self)?date=$truthy(on_utc)?self.$new_offset(0):self:$eqeqeq($truthy($ret_or_2=$$$("::","Date","skip_raise")?"constant":nil)?$$$("Date"):$ret_or_2,$ret_or_1)?date=$$$("Time").$utc(self.$year(),self.$month(),self.$day()):$eqeqeq($$$("Time"),$ret_or_1)&&(date=$truthy(on_utc)?self.$getutc():self),str=date.$strftime(format),$truthy(fractions)&&$truthy($rb_gt(fdigits,0))&&(str=$rb_plus(str,date.$strftime(".%"+fdigits+"N"))),$truthy(utc_tz)?str=$rb_plus(str,$truthy(self.$utc())?utc_tz:date.$strftime(tz_format)):$truthy(tz_format)&&(str=$rb_plus(str,date.$strftime(tz_format))),str}),{$$arity:-1,$$s:this})}),-3),self.$def_formatter("rfc2822","%a, %d %b %Y %T ",$hash2(["utc_tz","tz_format"],{utc_tz:"-00:00",tz_format:"%z"})),$alias(self,"rfc822","rfc2822"),self.$def_formatter("httpdate","%a, %d %b %Y %T GMT",$hash2(["on_utc"],{on_utc:!0})),self.$def_formatter("xmlschema","%FT%T",$hash2(["utc_tz","tz_format","fractions"],{utc_tz:"Z",tz_format:"%:z",fractions:!0})),$alias(self,"iso8601","xmlschema"),$def(self,"$to_date",(function(){return $$("Date").$wrap(this)}),0),$def(self,"$to_datetime",(function(){return $$("DateTime").$wrap(this)}),0),$def(self,"$to_time",(function(){return this}),0)}($nesting[0],0,$nesting),self.$require("date")},Opal.modules["date/date_time"]=function(Opal){var $nesting=[],$$=Opal.$r($nesting),nil=Opal.nil,$$$=Opal.$$$,$klass=Opal.klass,$def=Opal.def,$alias=Opal.alias,$rb_divide=Opal.rb_divide,$rb_times=Opal.rb_times,$rb_plus=Opal.rb_plus,$rb_minus=Opal.rb_minus,$truthy=Opal.truthy;return Opal.add_stubs("wrap,now,parse,new,def_delegators,/,usec,gmt_offset,*,+,-,is_a?,clone,_parse_offset,dup,year,month,day"),function($base,$super,$parent_nesting){var self=$klass($base,$super,"DateTime"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return self.$$prototype.date=nil,function(self,$parent_nesting){var $nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);$def(self,"$now",(function(){return this.$wrap($$("Time").$now())}),0),$def(self,"$parse",(function(str){return this.$wrap($$("Time").$parse(str))}),1)}(Opal.get_singleton_class(self),$nesting),$def(self,"$initialize",(function(year,month,day,hours,minutes,seconds,offset,start){return null==year&&(year=-4712),null==month&&(month=1),null==day&&(day=1),null==hours&&(hours=0),null==minutes&&(minutes=0),null==seconds&&(seconds=0),null==offset&&(offset=0),null==start&&(start=$$("ITALY")),1582===year&&10===month&&day>4&&day<15&&(day=4),this.date=$$("Time").$new(year,month,day,hours,minutes,seconds,offset),this.start=start}),-1),self.$def_delegators("@date","min","hour","sec"),$alias(self,"minute","min"),$alias(self,"second","sec"),$def(self,"$sec_fraction",(function(){return $rb_divide(this.date.$usec(),$$$("Rational").$new(1e6,1))}),0),$alias(self,"second_fraction","sec_fraction"),$def(self,"$offset",(function(){return $rb_divide(this.date.$gmt_offset(),$rb_times(24,$$$("Rational").$new(3600,1)))}),0),$def(self,"$+",(function(other){return $$$("DateTime").$wrap($rb_plus(this.date,other))}),1),$def(self,"$-",(function(other){var result=nil;return Opal.is_a(other,$$$("Date"))&&(other=other.date),result=$rb_minus(this.date,other),$truthy(result["$is_a?"]($$$("Time")))?$$$("DateTime").$wrap(result):result}),1),$def(self,"$new_offset",(function(offset){var new_date=nil;return new_date=this.$clone(),offset=$$("Time").$_parse_offset(offset),new_date.date.timezone=offset,new_date}),1),$def(self,"$to_datetime",(function(){return this}),0),$def(self,"$to_time",(function(){return this.date.$dup()}),0),$def(self,"$to_date",(function(){return 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args=$post_args,kwargs=Opal.kwrestargs($kwargs,{}),$send($$("Time"),"def_formatter",$to_a(args).concat([Opal.to_hash(kwargs).$merge($hash2(["on"],{on:self}))]))}),-1),self.$def_formatter("asctime","%c"),$alias(self,"ctime","asctime"),self.$def_formatter("iso8601","%F"),$alias(self,"xmlschema","iso8601"),self.$def_formatter("rfc3339","%FT%T%:z"),self.$def_formatter("rfc2822","%a, %-d %b %Y %T %z"),$alias(self,"rfc822","rfc2822"),self.$def_formatter("httpdate","%a, %d %b %Y %T 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self=$klass($base,null,"Date"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting),$proto=self.$$prototype;$proto.date=$proto.start=nil,self.$include($$("Comparable")),self.$extend($$("Forwardable")),$const_set($nesting[0],"JULIAN",$$("Infinity").$new()),$const_set($nesting[0],"GREGORIAN",$$("Infinity").$new()["$-@"]()),$const_set($nesting[0],"ITALY",2299161),$const_set($nesting[0],"ENGLAND",2361222),$const_set($nesting[0],"MONTHNAMES",$rb_plus([nil],["January","February","March","April","May","June","July","August","September","October","November","December"])),$const_set($nesting[0],"ABBR_MONTHNAMES",["jan","feb","mar","apr","may","jun","jul","aug","sep","oct","nov","dec"]),$const_set($nesting[0],"DAYNAMES",["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"]),$const_set($nesting[0],"ABBR_DAYNAMES",["Sun","Mon","Tue","Wed","Thu","Fri","Sat"]),function(self,$parent_nesting){var $nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);$def(self,"$wrap",(function(native$){var instance=nil;return(instance=this.$allocate()).start=$$("ITALY"),instance.date=native$,instance}),1),$def(self,"$parse",(function(string,comp){null==comp&&(comp=!0);var current_date=new Date,current_day=current_date.getDate(),current_month=current_date.getMonth(),current_year=current_date.getFullYear(),current_wday=current_date.getDay(),full_month_name_regexp=$$("MONTHNAMES").$compact().$join("|");function match1(match){return match[1]}function match2(match){return match[2]}function match3(match){return match[3]}function match4(match){return match[4]}function fromShortYear(fn){return function(match){var short_year=fn(match);return short_year+=short_year>=69?1900:2e3}}function fromMonthAbbr(fn){return function(match){var abbr=fn(match).toLowerCase();return $$("ABBR_MONTHNAMES").indexOf(abbr)+1}}function toInt(fn){return function(match){var value=fn(match);return parseInt(value,10)}}function fromFullMonthName(fn){return function(match){var month_name=fn(match);return $send($$("MONTHNAMES").$compact(),"map",[],"downcase".$to_proc()).indexOf(month_name.$downcase())+1}}var fn,rule,i,match,rules=[{regexp:/^(\d{2})$/,year:current_year,month:current_month,day:toInt(match1)},{regexp:/^(\d{3})$/,year:current_year,month:0,day:toInt(match1)},{regexp:/^(\d{2})(\d{2})$/,year:current_year,month:toInt(match1),day:toInt(match2)},{regexp:/^(\d{2})(\d{3})$/,year:fromShortYear(toInt(match1)),month:0,day:toInt(match2)},{regexp:/^(\d{2})(\d{2})(\d{2})$/,year:fromShortYear(toInt(match1)),month:toInt(match2),day:toInt(match3)},{regexp:/^(\d{4})(\d{3})$/,year:toInt(match1),month:0,day:toInt(match2)},{regexp:/^(\d{4})(\d{2})(\d{2})$/,year:toInt(match1),month:toInt(match2),day:toInt(match3)},{regexp:/^([a-z]{3})[\s\.\/\-](\d{3,4})$/,year:toInt(match2),month:fromMonthAbbr(match1),day:1},{regexp:/^(\d{1,2})[\s\.\/\-]([a-z]{3})[\s\.\/\-](\d{3,4})$/i,year:toInt(match3),month:fromMonthAbbr(match2),day:toInt(match1)},{regexp:/^([a-z]{3})[\s\.\/\-](\d{1,2})[\s\.\/\-](\d{3,4})$/i,year:toInt(match3),month:fromMonthAbbr(match1),day:toInt(match2)},{regexp:/^(\d{3,4})[\s\.\/\-]([a-z]{3})[\s\.\/\-](\d{1,2})$/i,year:toInt(match1),month:fromMonthAbbr(match2),day:toInt(match3)},{regexp:/^(\-?\d{3,4})[\s\.\/\-](\d{1,2})[\s\.\/\-](\d{1,2})$/,year:toInt(match1),month:toInt(match2),day:toInt(match3)},{regexp:/^(\d{2})[\s\.\/\-](\d{1,2})[\s\.\/\-](\d{1,2})$/,year:(fn=toInt(match1),function(match){var value=fn(match);return comp?value+2e3:value}),month:toInt(match2),day:toInt(match3)},{regexp:/^(\d{1,2})[\s\.\/\-](\d{1,2})[\s\.\/\-](\-?\d{3,4})$/,year:toInt(match3),month:toInt(match2),day:toInt(match1)},{regexp:new RegExp("^("+$$("DAYNAMES").$join("|")+")$","i"),year:current_year,month:current_month,day:function(fn){return function(match){var dayname=fn(match),wday=$send($$("DAYNAMES"),"map",[],"downcase".$to_proc()).indexOf(dayname.$downcase());return current_day-current_wday+wday}}(match1)},{regexp:new RegExp("^("+full_month_name_regexp+")[\\s\\.\\/\\-](\\d{1,2})(th|nd|rd)[\\s\\.\\/\\-](\\-?\\d{3,4})$","i"),year:toInt(match4),month:fromFullMonthName(match1),day:toInt(match2)},{regexp:new RegExp("^("+full_month_name_regexp+")[\\s\\.\\/\\-](\\d{1,2})(th|nd|rd)","i"),year:current_year,month:fromFullMonthName(match1),day:toInt(match2)},{regexp:new RegExp("^(\\d{1,2})(th|nd|rd)[\\s\\.\\/\\-]("+full_month_name_regexp+")[\\s\\.\\/\\-](\\-?\\d{3,4})$","i"),year:toInt(match4),month:fromFullMonthName(match3),day:toInt(match1)},{regexp:new RegExp("^(\\-?\\d{3,4})[\\s\\.\\/\\-]("+full_month_name_regexp+")[\\s\\.\\/\\-](\\d{1,2})(th|nd|rd)$","i"),year:toInt(match1),month:fromFullMonthName(match2),day:toInt(match3)}];for(i=0;i<rules.length;i++)if(match=(rule=rules[i]).regexp.exec(string)){var year=rule.year;"function"==typeof year&&(year=year(match));var month=rule.month;"function"==typeof month&&(month=month(match)-1);var day=rule.day;"function"==typeof day&&(day=day(match));var result=new Date(year,month,day);return year>=0&&year<=1970&&result.setFullYear(year),this.$wrap(result)}return this.$raise($$("ArgumentError"),"invalid date")}),-2),$def(self,"$today",(function(){return this.$wrap(new Date)}),0),$def(self,"$gregorian_leap?",(function(year){return new Date(year,1,29).getMonth()-1==0}),1),$alias(self,"civil","new")}(Opal.get_singleton_class(self),$nesting),$def(self,"$initialize",(function(year,month,day,start){return null==year&&(year=-4712),null==month&&(month=1),null==day&&(day=1),null==start&&(start=$$("ITALY")),1582===year&&10===month&&day>4&&day<15&&(day=4),this.date=new Date(year,month-1,day),this.start=start}),-1),self.$attr_reader("start"),$def(self,"$<=>",(function(other){if(other.$$is_number)return this.$jd()["$<=>"](other);if($$$("Date")["$==="](other)){var a=this.date,b=other.date;return Opal.is_a(this,$$$("DateTime"))||a.setHours(0,0,0,0),Opal.is_a(other,$$$("DateTime"))||b.setHours(0,0,0,0),a<b?-1:a>b?1:0}return nil}),1),$def(self,"$>>",(function(n){return n.$$is_number||this.$raise($$$("TypeError")),this["$<<"](n["$-@"]())}),1),$def(self,"$<<",(function(n){return n.$$is_number||this.$raise($$$("TypeError")),this.$prev_month(n)}),1),$def(self,"$clone",(function(){var date=nil;return(date=$$("Date").$wrap(this.date.$dup())).start=this.start,date}),0),self.$def_delegators("@date","sunday?","monday?","tuesday?","wednesday?","thursday?","friday?","saturday?","day","month","year","wday","yday"),$alias(self,"mday","day"),$alias(self,"mon","month"),$def(self,"$jd",(function(){var ggg,s,a,j1,jd,mm=this.date.getMonth()+1,dd=this.date.getDate(),yy=this.date.getFullYear(),hr=12;return hr=hr+0+0,ggg=1,yy<=1585&&(ggg=0),jd=-1*Math.floor(7*(Math.floor((mm+9)/12)+yy)/4),s=1,mm-9<0&&(s=-1),a=Math.abs(mm-9),j1=Math.floor(yy+s*Math.floor(a/7)),j1=-1*Math.floor(3*(Math.floor(j1/100)+1)/4),jd=(jd=jd+Math.floor(275*mm/9)+dd+ggg*j1)+1721027+2*ggg+367*yy-.5,jd+=hr/24}),0),$def(self,"$julian?",(function(){return this.date<new Date(1582,9,15,12)}),0),$def(self,"$new_start",(function(start){var new_date=nil;return(new_date=this.$clone()).start=start,new_date}),1),$def(self,"$next",(function(){return $rb_plus(this,1)}),0),$def(self,"$-",(function(date){return date.date?Math.round((this.date-date.date)/864e5):this.$prev_day(date)}),1),$def(self,"$+",(function(date){return this.$next_day(date)}),1),$def(self,"$prev_day",(function(n){if(null==n&&(n=1),n.$$is_number){var result=this.$clone();return result.date.setDate(this.date.getDate()-n),result}this.$raise($$$("TypeError"))}),-1),$def(self,"$next_day",(function(n){return null==n&&(n=1),n.$$is_number||this.$raise($$$("TypeError")),this.$prev_day(n["$-@"]())}),-1),$def(self,"$prev_month",(function(n){null==n&&(n=1),n.$$is_number||this.$raise($$$("TypeError"));var result=this.$clone(),date=result.date,cur=date.getDate();return date.setDate(1),date.setMonth(date.getMonth()-n),date.setDate(Math.min(cur,$$("Date").$_days_in_month(date.getFullYear(),date.getMonth()))),result}),-1),$def(self,"$next_month",(function(n){return null==n&&(n=1),n.$$is_number||this.$raise($$$("TypeError")),this.$prev_month(n["$-@"]())}),-1),$def(self,"$prev_year",(function(years){return null==years&&(years=1),years.$$is_number||this.$raise($$$("TypeError")),this.$class().$new($rb_minus(this.$year(),years),this.$month(),this.$day())}),-1),$def(self,"$next_year",(function(years){return null==years&&(years=1),years.$$is_number||this.$raise($$$("TypeError")),this.$prev_year(years["$-@"]())}),-1),$def(self,"$strftime",(function(format){return null==format&&(format=""),""==format?this.$to_s():this.date.$strftime(format)}),-1),$def(self,"$to_s",(function(){var d=this.date,year=d.getFullYear(),month=d.getMonth()+1,day=d.getDate();return month<10&&(month="0"+month),day<10&&(day="0"+day),year+"-"+month+"-"+day}),0),$def(self,"$to_time",(function(){return $$("Time").$new(this.$year(),this.$month(),this.$day())}),0),$def(self,"$to_date",(function(){return this}),0),$def(self,"$to_datetime",(function(){return $$("DateTime").$new(this.$year(),this.$month(),this.$day())}),0),$def(self,"$to_n",(function(){return this.date}),0),$def(self,"$step",(function $$step(limit,step){var steps,result,block=$$step.$$p||nil,steps_count=nil;return delete $$step.$$p,null==step&&(step=1),steps_count=$rb_minus(limit,this).$to_i(),steps=$truthy($rb_lt($rb_times(steps_count,step),0))?[]:$truthy($rb_lt(steps_count,0))?$send(Opal.Range.$new(0,steps_count["$-@"](),!1).$step(step.$abs()),"map",[],"-@".$to_proc()).$reverse():Opal.Range.$new(0,steps_count,!1).$step(step.$abs()),result=$send(steps,"map",[],(function $$8(i){return null==i&&(i=nil),$rb_plus(null==$$8.$$s?this:$$8.$$s,i)}),{$$arity:1,$$s:this}),block!==nil?($send(result,"each",[],(function(i){return null==i&&(i=nil),Opal.yield1(block,i)}),1),this):result}),-2),$def(self,"$upto",(function $$upto(max){var block=$$upto.$$p||nil;return delete $$upto.$$p,$send(this,"step",[max,1],block.$to_proc())}),1),$def(self,"$downto",(function $$downto(min){var block=$$downto.$$p||nil;return delete $$downto.$$p,$send(this,"step",[min,-1],block.$to_proc())}),1),$def(self,"$cwday",(function(){return this.date.getDay()||7}),0),$def(self,"$cweek",(function(){var d=new Date(this.date);return d.setHours(0,0,0),d.setDate(d.getDate()+4-(d.getDay()||7)),Math.ceil(((d-new Date(d.getFullYear(),0,1))/864e5+1)/7)}),0),$defs(self,"$_days_in_month",(function(year,month){return[31,year%4==0&&year%100!=0||year%400==0?29:28,31,30,31,30,31,31,30,31,30,31][month]}),2),$alias(self,"eql?","=="),$alias(self,"succ","next")}($nesting[0],0,$nesting),self.$require("date/date_time"),self.$require("date/formatters")},Opal.modules.time=function(Opal){var self=Opal.top,$nesting=[],nil=Opal.nil,$$$=Opal.$$$,$klass=Opal.klass,$defs=Opal.defs,$hash2=Opal.hash2,$send=Opal.send,$eqeqeq=Opal.eqeqeq,$truthy=Opal.truthy,$rb_gt=Opal.rb_gt,$rb_plus=Opal.rb_plus,$alias=Opal.alias,$def=Opal.def;return Opal.add_stubs("define_method,===,new_offset,utc,year,month,day,getutc,strftime,>,+,def_formatter,wrap,require"),function($base,$super,$parent_nesting){var self=$klass($base,null,"Time"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);$defs(self,"$parse",(function(str){return new Date(Date.parse(str))}),1),$defs(self,"$def_formatter",(function(name,format,$kwargs){var on_utc,utc_tz,tz_format,fractions,on;if(null==$kwargs)$kwargs=$hash2([],{});else if(!$kwargs.$$is_hash)throw Opal.ArgumentError.$new("expected kwargs");return null==(on_utc=$kwargs.$$smap.on_utc)&&(on_utc=!1),null==(utc_tz=$kwargs.$$smap.utc_tz)&&(utc_tz=nil),null==(tz_format=$kwargs.$$smap.tz_format)&&(tz_format=nil),null==(fractions=$kwargs.$$smap.fractions)&&(fractions=!1),null==(on=$kwargs.$$smap.on)&&(on=this),$send(on,"define_method",[name],(function $$1(fdigits){var $ret_or_1,self=null==$$1.$$s?this:$$1.$$s,$ret_or_2=nil,date=nil,str=nil;return null==fdigits&&(fdigits=0),$eqeqeq($truthy($ret_or_2=$$$("::","DateTime","skip_raise")?"constant":nil)?$$$("DateTime"):$ret_or_2,$ret_or_1=self)?date=$truthy(on_utc)?self.$new_offset(0):self:$eqeqeq($truthy($ret_or_2=$$$("::","Date","skip_raise")?"constant":nil)?$$$("Date"):$ret_or_2,$ret_or_1)?date=$$$("Time").$utc(self.$year(),self.$month(),self.$day()):$eqeqeq($$$("Time"),$ret_or_1)&&(date=$truthy(on_utc)?self.$getutc():self),str=date.$strftime(format),$truthy(fractions)&&$truthy($rb_gt(fdigits,0))&&(str=$rb_plus(str,date.$strftime(".%"+fdigits+"N"))),$truthy(utc_tz)?str=$rb_plus(str,$truthy(self.$utc())?utc_tz:date.$strftime(tz_format)):$truthy(tz_format)&&(str=$rb_plus(str,date.$strftime(tz_format))),str}),{$$arity:-1,$$s:this})}),-3),self.$def_formatter("rfc2822","%a, %d %b %Y %T ",$hash2(["utc_tz","tz_format"],{utc_tz:"-00:00",tz_format:"%z"})),$alias(self,"rfc822","rfc2822"),self.$def_formatter("httpdate","%a, %d %b %Y %T GMT",$hash2(["on_utc"],{on_utc:!0})),self.$def_formatter("xmlschema","%FT%T",$hash2(["utc_tz","tz_format","fractions"],{utc_tz:"Z",tz_format:"%:z",fractions:!0})),$alias(self,"iso8601","xmlschema"),$def(self,"$to_date",(function(){return $$("Date").$wrap(this)}),0),$def(self,"$to_datetime",(function(){return $$("DateTime").$wrap(this)}),0),$def(self,"$to_time",(function(){return this}),0)}($nesting[0],0,$nesting),self.$require("date")};
diff --git a/opal/master/time.min.js.gz b/opal/master/time.min.js.gz
index 44df8feb..f32a32bd 100644
Binary files a/opal/master/time.min.js.gz and b/opal/master/time.min.js.gz differ
diff --git a/opal/master/uri.js b/opal/master/uri.js
new file mode 100644
index 00000000..2812cf78
--- /dev/null
+++ b/opal/master/uri.js
@@ -0,0 +1,85 @@
+Opal.modules["uri"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var $nesting = [], nil = Opal.nil, $module = Opal.module, $hash2 = Opal.hash2, $truthy = Opal.truthy, $defs = Opal.defs;
+
+  Opal.add_stubs('ascii_only?,raise,name,find,force_encoding');
+  return (function($base, $parent_nesting) {
+    var self = $module($base, 'URI');
+
+    var $nesting = [self].concat($parent_nesting), $$ = Opal.$r($nesting);
+
+    return $defs(self, '$decode_www_form', function $$decode_www_form(str, $a, $b) {
+      var $post_args, $kwargs, enc, separator, use__charset_, isindex, self = this;
+
+      
+      
+      $post_args = Opal.slice.call(arguments, 1);
+      
+      $kwargs = Opal.extract_kwargs($post_args);
+      
+      if ($kwargs == null) {
+        $kwargs = $hash2([], {});
+      } else if (!$kwargs.$$is_hash) {
+        throw Opal.ArgumentError.$new('expected kwargs');
+      };
+      
+      if ($post_args.length > 0) enc = $post_args.shift();;
+      
+      separator = $kwargs.$$smap["separator"];
+      if (separator == null) separator = "&";
+      
+      use__charset_ = $kwargs.$$smap["use__charset_"];
+      if (use__charset_ == null) use__charset_ = false;
+      
+      isindex = $kwargs.$$smap["isindex"];
+      if (isindex == null) isindex = false;
+      if (!$truthy(str['$ascii_only?']())) {
+        self.$raise($$('ArgumentError'), "the input of " + (self.$name()) + "." + ("decode_www_form") + " must be ASCII only string")
+      };
+      
+      var ary = [], key, val;
+      if (str.length == 0)
+        return ary;
+      if (enc)
+        (enc = $$('Encoding').$find(enc));
+
+      var parts = str.split(separator);
+      for (var i = 0; i < parts.length; i++) {
+        var string = parts[i];
+        var splitIndex = string.indexOf('=')
+
+        if (splitIndex >= 0) {
+          key = string.substr(0, splitIndex);
+          val = string.substr(splitIndex + 1);
+        } else {
+          key = string;
+          val = '';
+        }
+
+        if (isindex) {
+          if (splitIndex < 0) {
+            key = '';
+            val = string;
+          }
+          isindex = false;
+        }
+
+        key = decodeURIComponent(key.replace(/\+/g, ' '));
+        if (val) {
+          val = decodeURIComponent(val.replace(/\+/g, ' '));
+        } else {
+          val = '';
+        }
+
+        if (enc) {
+          key = (key).$force_encoding(enc)
+          val = (val).$force_encoding(enc)
+        }
+
+        ary.push([key, val]);
+      }
+
+      return ary;
+    ;
+    }, -2)
+  })($nesting[0], $nesting)
+};
diff --git a/opal/master/uri.min.js b/opal/master/uri.min.js
new file mode 100644
index 00000000..db269a84
--- /dev/null
+++ b/opal/master/uri.min.js
@@ -0,0 +1 @@
+Opal.modules.uri=function(Opal){var $nesting=[],$module=(Opal.nil,Opal.module),$hash2=Opal.hash2,$truthy=Opal.truthy,$defs=Opal.defs;return Opal.add_stubs("ascii_only?,raise,name,find,force_encoding"),function($base,$parent_nesting){var self=$module($base,"URI"),$nesting=[self].concat($parent_nesting),$$=Opal.$r($nesting);return $defs(self,"$decode_www_form",(function(str,$a,$b){var $post_args,$kwargs,enc,separator,isindex,self=this;if($post_args=Opal.slice.call(arguments,1),null==($kwargs=Opal.extract_kwargs($post_args)))$kwargs=$hash2([],{});else if(!$kwargs.$$is_hash)throw Opal.ArgumentError.$new("expected kwargs");$post_args.length>0&&(enc=$post_args.shift()),null==(separator=$kwargs.$$smap.separator)&&(separator="&"),$kwargs.$$smap.use__charset_,null==(isindex=$kwargs.$$smap.isindex)&&(isindex=!1),$truthy(str["$ascii_only?"]())||self.$raise($$("ArgumentError"),"the input of "+self.$name()+".decode_www_form must be ASCII only string");var key,val,ary=[];if(0==str.length)return ary;enc&&(enc=$$("Encoding").$find(enc));for(var parts=str.split(separator),i=0;i<parts.length;i++){var string=parts[i],splitIndex=string.indexOf("=");splitIndex>=0?(key=string.substr(0,splitIndex),val=string.substr(splitIndex+1)):(key=string,val=""),isindex&&(splitIndex<0&&(key="",val=string),isindex=!1),key=decodeURIComponent(key.replace(/\+/g," ")),val=val?decodeURIComponent(val.replace(/\+/g," ")):"",enc&&(key=key.$force_encoding(enc),val=val.$force_encoding(enc)),ary.push([key,val])}return ary}),-2)}($nesting[0],$nesting)};
diff --git a/opal/master/uri.min.js.gz b/opal/master/uri.min.js.gz
new file mode 100644
index 00000000..49a88202
Binary files /dev/null and b/opal/master/uri.min.js.gz differ
diff --git a/opal/master/yaml.js b/opal/master/yaml.js
index 08aae882..93fc311b 100644
--- a/opal/master/yaml.js
+++ b/opal/master/yaml.js
@@ -1,7 +1,6 @@
-/* Generated by Opal 1.3.0.dev */
-Opal.modules["yaml"] = function(Opal) {
-  var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$;
+Opal.modules["yaml"] = function(Opal) {/* Generated by Opal 1.5.0.dev */
+  var self = Opal.top, nil = Opal.nil;
 
-  Opal.add_stubs(['$warn']);
+  Opal.add_stubs('warn');
   return self.$warn("REMOVED: use `require 'nodejs/yaml'` instead")
 };
diff --git a/opal/master/yaml.min.js b/opal/master/yaml.min.js
index 2cb1cd37..9ad848b7 100644
--- a/opal/master/yaml.min.js
+++ b/opal/master/yaml.min.js
@@ -1 +1 @@
-Opal.modules.yaml=function(Opal){var self=Opal.top;Opal.nil,Opal.$$$,Opal.$$;return Opal.add_stubs(["$warn"]),self.$warn("REMOVED: use `require 'nodejs/yaml'` instead")};
+Opal.modules.yaml=function(Opal){var self=Opal.top;Opal.nil;return Opal.add_stubs("warn"),self.$warn("REMOVED: use `require 'nodejs/yaml'` instead")};
diff --git a/opal/master/yaml.min.js.gz b/opal/master/yaml.min.js.gz
index a12aabbc..fa33ed34 100644
Binary files a/opal/master/yaml.min.js.gz and b/opal/master/yaml.min.js.gz differ
diff --git a/opal/opal.rb b/opal/opal.rb
new file mode 100644
index 00000000..d5ccdc86
--- /dev/null
+++ b/opal/opal.rb
@@ -0,0 +1,20 @@
+::Object.require 'opal/base'
+::Object.require 'opal/mini'
+
+::Object.require 'corelib/kernel/format'
+::Object.require 'corelib/string/encoding'
+::Object.autoload :Math, 'corelib/math'
+::Object.require 'corelib/complex/base'
+::Object.autoload :Complex, 'corelib/complex'
+::Object.require 'corelib/rational/base'
+::Object.autoload :Rational, 'corelib/rational'
+::Object.require 'corelib/time'
+::Object.autoload :Struct, 'corelib/struct'
+::Object.require 'corelib/dir'
+::Object.autoload :File, 'corelib/file'
+
+::Object.require 'corelib/process/base'
+::Object.autoload :Process, 'corelib/process'
+::Object.autoload :Random, 'corelib/random'
+
+::Object.require 'corelib/unsupported'
diff --git a/opal/opal/base.rb b/opal/opal/base.rb
new file mode 100644
index 00000000..ede94356
--- /dev/null
+++ b/opal/opal/base.rb
@@ -0,0 +1,10 @@
+::Object.require 'corelib/runtime'
+::Object.require 'corelib/helpers'
+::Object.require 'corelib/module'
+::Object.require 'corelib/class'
+::Object.require 'corelib/basic_object'
+::Object.require 'corelib/kernel'
+::Object.require 'corelib/main'
+::Object.require 'corelib/error'
+
+::Object.require 'corelib/constants'
diff --git a/opal/opal/full.rb b/opal/opal/full.rb
new file mode 100644
index 00000000..3e9ae8a7
--- /dev/null
+++ b/opal/opal/full.rb
@@ -0,0 +1,8 @@
+::Object.autoload :Marshal, 'corelib/marshal'
+::Object.require 'corelib/string/unpack'
+::Object.require 'corelib/array/pack'
+::Object.autoload :ObjectSpace, 'corelib/object_space'
+::Object.require 'corelib/pattern_matching/base'
+::Object.autoload :PatternMatching, 'corelib/pattern_matching'
+::Object.autoload :TracePoint, 'corelib/trace_point'
+::Object.require 'corelib/binding'
diff --git a/opal/opal/mini.rb b/opal/opal/mini.rb
new file mode 100644
index 00000000..b18920f7
--- /dev/null
+++ b/opal/opal/mini.rb
@@ -0,0 +1,18 @@
+::Object.require 'opal/base'
+
+::Object.require 'corelib/nil'
+::Object.require 'corelib/boolean'
+::Object.require 'corelib/string'
+::Object.require 'corelib/comparable'
+::Object.require 'corelib/enumerable'
+::Object.require 'corelib/enumerator'
+::Object.require 'corelib/array'
+::Object.require 'corelib/hash'
+::Object.require 'corelib/number'
+::Object.require 'corelib/range'
+::Object.require 'corelib/proc'
+::Object.require 'corelib/method'
+::Object.require 'corelib/regexp'
+::Object.require 'corelib/variables'
+::Object.require 'corelib/io'
+::Object.require 'opal/regexp_anchors'
diff --git a/package.json b/package.json
new file mode 100644
index 00000000..f6b7c764
--- /dev/null
+++ b/package.json
@@ -0,0 +1,17 @@
+{
+  "name": "opal-dev",
+  "private": true,
+  "dependencies": {
+    "benchmark": "^2.1.4",
+    "browserify": "^17.0.0",
+    "source-map-support": "0.5.19",
+    "terser": "^5.9.0"
+  },
+  "devDependencies": {
+    "eslint": "^7.32.0"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/opal/opal.git"
+  }
+}
diff --git a/spec/README.md b/spec/README.md
new file mode 100644
index 00000000..2de60708
--- /dev/null
+++ b/spec/README.md
@@ -0,0 +1,10 @@
+# Opal specs overview
+
+* **ruby** the Ruby Spec Suite examples (submodule)
+* **ruby_specs** (file) a whitelist of the Ruby Spec Suite files to be ran
+* **filters** The list of the Ruby Spec Suite examples that are either bugs or unsupported
+* **opal** opal additions/special behaviour in the runtime/corelib
+* **lib** specs for opal lib (parser, lexer, grammar, compiler etc)
+* **mspec** the MSpec library that runs the ruby spec
+* **mspec-opal** Opal specific patches to the MSpec library
+* **support** misc. utilities
diff --git a/spec/filters/bugs/array.rb b/spec/filters/bugs/array.rb
new file mode 100644
index 00000000..ca42544e
--- /dev/null
+++ b/spec/filters/bugs/array.rb
@@ -0,0 +1,32 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "Array" do
+  fails "Array#== compares with an equivalent Array-like object using #to_ary" # Expected false to be true
+  fails "Array#== returns true for [NaN] == [NaN] because Array#== first checks with #equal? and NaN.equal?(NaN) is true" # Expected [NaN] to equal [NaN]
+  fails "Array#[] can be sliced with Enumerator::ArithmeticSequence has endless range with start outside of array's bounds" # Expected [] == nil to be truthy but was false
+  fails "Array#[] can be sliced with Enumerator::ArithmeticSequence has range with bounds outside of array" # Expected RangeError but no exception was raised ([0, 2, 4] was returned)
+  fails "Array#[] raises TypeError if to_int returns non-integer" # Expected TypeError but no exception was raised ([1, 2, 3, 4] was returned)
+  fails "Array#[] raises a RangeError if passed a range with a bound that is too large" # Expected RangeError but no exception was raised (nil was returned)
+  fails "Array#[] raises a type error if a range is passed with a length" # Expected TypeError but no exception was raised ([2, 3] was returned)
+  fails "Array#drop raises a TypeError when the passed argument isn't an integer and #to_int returns non-Integer" # Expected TypeError but no exception was raised ([1, 2] was returned)
+  fails "Array#each does not yield elements deleted from the end of the array" # Expected [2, 3, nil] to equal [2, 3]
+  fails "Array#each yields elements added to the end of the array by the block" # Expected [2] to equal [2, 0, 0]
+  fails "Array#fill with (filler, range) works with endless ranges" # Opal::SyntaxError: undefined method `type' for nil
+  fails "Array#filter returns a new array of elements for which block is true" # NoMethodError: undefined method `filter' for [1, 3, 4, 5, 6, 9]
+  fails "Array#flatten does not call #to_ary on elements beyond the given level"
+  fails "Array#flatten performs respond_to? and method_missing-aware checks when coercing elements to array"
+  fails "Array#flatten with a non-Array object in the Array calls #method_missing if defined"
+  fails "Array#inspect does not call #to_str on the object returned from #to_s when it is not a String" # Exception: Cannot convert object to primitive value
+  fails "Array#partition returns in the left array values for which the block evaluates to true"
+  fails "Array#rassoc calls elem == obj on the second element of each contained array"
+  fails "Array#rassoc does not check the last element in each contained but specifically the second" # Expected [1, "foobar", #<MockObject:0x4ef6e>] to equal [2, #<MockObject:0x4ef6e>, 1]
+  fails "Array#select returns a new array of elements for which block is true"
+  fails "Array#slice can be sliced with Enumerator::ArithmeticSequence has endless range with start outside of array's bounds" # Expected [] == nil to be truthy but was false
+  fails "Array#slice can be sliced with Enumerator::ArithmeticSequence has range with bounds outside of array" # Expected RangeError but no exception was raised ([0, 2, 4] was returned)
+  fails "Array#slice raises TypeError if to_int returns non-integer" # Expected TypeError but no exception was raised ([1, 2, 3, 4] was returned)
+  fails "Array#slice raises a RangeError if passed a range with a bound that is too large" # Expected RangeError but no exception was raised (nil was returned)
+  fails "Array#slice raises a type error if a range is passed with a length" # Expected TypeError but no exception was raised ([2, 3] was returned)
+  fails "Array#to_h with block does not coerce returned pair to Array with #to_a" # Expected TypeError (/wrong element type MockObject at 0/) but got: TypeError (wrong element type NilClass at 0 (expected array))
+  fails "Array#to_h with block raises TypeError if block returns something other than Array" # Expected TypeError (/wrong element type String at 0/) but got: TypeError (wrong element type NilClass at 0 (expected array))
+  fails "Array#to_s does not call #to_str on the object returned from #to_s when it is not a String" # Exception: Cannot convert object to primitive value
+  fails "Array#uniq! properly handles recursive arrays"
+end
diff --git a/spec/filters/bugs/base64.rb b/spec/filters/bugs/base64.rb
new file mode 100644
index 00000000..a99b4782
--- /dev/null
+++ b/spec/filters/bugs/base64.rb
@@ -0,0 +1,10 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "Base64" do
+  fails "Base64#decode64 returns a binary encoded string" # Expected #<Encoding:UTF-8> == #<Encoding:ASCII-8BIT (dummy)> to be truthy but was false
+  fails "Base64#decode64 returns the Base64-decoded version of the given string with wrong padding" # Expected "]M\u0095¹\u0090\u0081É\u0095¥¹\u0099½É\u008D\u0095µ\u0095¹ÑÌ" == "]M\u0095¹\u0090\u0081ɕ¥¹\u0099½ɍ\u0095µ\u0095¹ÑÌ" to be truthy but was false
+  fails "Base64#encode64 returns a US_ASCII encoded string" # Expected #<Encoding:UTF-8> == #<Encoding:ASCII-8BIT (dummy)> to be truthy but was false
+  fails "Base64#strict_decode64 raises ArgumentError when the given string contains an invalid character" # Expected ArgumentError but no exception was raised ("Ü" was returned)
+  fails "Base64#strict_decode64 raises ArgumentError when the given string has wrong padding" # Expected ArgumentError but no exception was raised ("\u0001M\u0095¹\u0090\u0081É\u0095¥¹\u0099½É\u008D\u0095µ\u0095¹ÑÌ" was returned)
+  fails "Base64#strict_decode64 returns a binary encoded string" # Expected #<Encoding:UTF-8> == #<Encoding:ASCII-8BIT (dummy)> to be truthy but was false
+  fails "Base64#strict_encode64 returns a US_ASCII encoded string" # Expected #<Encoding:UTF-8> == #<Encoding:ASCII-8BIT (dummy)> to be truthy but was false
+end
diff --git a/spec/filters/bugs/basicobject.rb b/spec/filters/bugs/basicobject.rb
new file mode 100644
index 00000000..1a879391
--- /dev/null
+++ b/spec/filters/bugs/basicobject.rb
@@ -0,0 +1,13 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "BasicObject" do
+  fails "BasicObject raises NoMethodError for nonexistent methods after #method_missing is removed"
+  fails "BasicObject#initialize does not accept arguments"
+  fails "BasicObject#instance_eval evaluates string with given filename and linenumber"
+  fails "BasicObject#instance_eval evaluates string with given filename and negative linenumber" # Expected ["RuntimeError"] to equal ["b_file", "-98"]
+  fails "BasicObject#instance_eval has access to the caller's local variables" # Expected nil to equal "value"
+  fails "BasicObject#instance_exec raises a LocalJumpError unless given a block"
+  fails "BasicObject#method_missing for an instance sets the receiver of the raised NoMethodError"
+  fails "BasicObject#singleton_method_added when singleton_method_added is undefined calls #method_missing" # Expected [] == [["singleton_method_added", "foo"],  ["singleton_method_added", "bar"],  ["singleton_method_added", "baz"]] to be truthy but was false
+  fails "BasicObject#singleton_method_added when singleton_method_added is undefined raises NoMethodError for a metaclass" # Expected NoMethodError (/undefined method `singleton_method_added' for/) but no exception was raised ("foo" was returned)
+  fails "BasicObject#singleton_method_added when singleton_method_added is undefined raises NoMethodError for a singleton instance" # Expected NoMethodError (/undefined method `singleton_method_added' for #<Object:/) but no exception was raised ("foo" was returned)
+end
diff --git a/spec/filters/bugs/bigdecimal.rb b/spec/filters/bugs/bigdecimal.rb
new file mode 100644
index 00000000..caef382a
--- /dev/null
+++ b/spec/filters/bugs/bigdecimal.rb
@@ -0,0 +1,224 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "BigDecimal" do
+  fails "BidDecimal#hash two BigDecimal objects with numerically equal values should have the same hash value" # Exception: self.$BigDecimal(...).$hash is not a function
+  fails "BidDecimal#hash two BigDecimal objects with the same value should have the same hash for NaNs" # Exception: self.$BigDecimal(...).$hash is not a function
+  fails "BidDecimal#hash two BigDecimal objects with the same value should have the same hash for infinite values" # Exception: self.$BigDecimal(...).$hash is not a function
+  fails "BidDecimal#hash two BigDecimal objects with the same value should have the same hash for ordinary values" # Exception: self.$BigDecimal(...).$hash is not a function
+  fails "BidDecimal#hash two BigDecimal objects with the same value should have the same hash for zero values" # Exception: self.$BigDecimal(...).$hash is not a function
+  fails "BigDecimal constants defines a VERSION value" # Expected false to be true
+  fails "BigDecimal constants exception-related constants has a EXCEPTION_ALL value" # NameError: uninitialized constant BigDecimal::EXCEPTION_ALL
+  fails "BigDecimal constants exception-related constants has a EXCEPTION_INFINITY value" # NameError: uninitialized constant BigDecimal::EXCEPTION_INFINITY
+  fails "BigDecimal constants exception-related constants has a EXCEPTION_NaN value" # NameError: uninitialized constant BigDecimal::EXCEPTION_NaN
+  fails "BigDecimal constants exception-related constants has a EXCEPTION_OVERFLOW value" # NameError: uninitialized constant BigDecimal::EXCEPTION_OVERFLOW
+  fails "BigDecimal constants exception-related constants has a EXCEPTION_UNDERFLOW value" # NameError: uninitialized constant BigDecimal::EXCEPTION_UNDERFLOW
+  fails "BigDecimal constants exception-related constants has a EXCEPTION_ZERODIVIDE value" # NameError: uninitialized constant BigDecimal::EXCEPTION_ZERODIVIDE
+  fails "BigDecimal constants has a BASE value" # NameError: uninitialized constant BigDecimal::BASE
+  fails "BigDecimal constants has a NaN value" # NameError: uninitialized constant BigDecimal::NAN
+  fails "BigDecimal constants has an INFINITY value" # NameError: uninitialized constant BigDecimal::INFINITY
+  fails "BigDecimal constants rounding-related constants has a ROUND_CEILING value" # Expected 2 to equal 5
+  fails "BigDecimal constants rounding-related constants has a ROUND_DOWN value" # Expected 1 to equal 2
+  fails "BigDecimal constants rounding-related constants has a ROUND_FLOOR value" # Expected 3 to equal 6
+  fails "BigDecimal constants rounding-related constants has a ROUND_HALF_DOWN value" # Expected 5 to equal 4
+  fails "BigDecimal constants rounding-related constants has a ROUND_HALF_EVEN value" # Expected 6 to equal 7
+  fails "BigDecimal constants rounding-related constants has a ROUND_HALF_UP value" # Expected 4 to equal 3
+  fails "BigDecimal constants rounding-related constants has a ROUND_UP value" # Expected 0 to equal 1
+  fails "BigDecimal is not defined unless it is required" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0xbe6e>
+  fails "BigDecimal#% returns NaN if NaN is involved"
+  fails "BigDecimal#% returns NaN if the dividend is Infinity"
+  fails "BigDecimal#% returns self modulo other"
+  fails "BigDecimal#% returns the dividend if the divisor is Infinity"
+  fails "BigDecimal#% with Object tries to coerce the other operand to self" # Mock 'Object' expected to receive coerce(6543.21) exactly 1 times but received it 0 times
+  fails "BigDecimal#* with Object tries to coerce the other operand to self" # Mock 'Object' expected to receive coerce(3e-20001) exactly 1 times but received it 0 times
+  fails "BigDecimal#* with Rational produces a BigDecimal" # Exception: lhs.$* is not a function
+  fails "BigDecimal#** 0 to power of 0 is 1"
+  fails "BigDecimal#** 0 to powers < 0 is Infinity"
+  fails "BigDecimal#** other powers of 0 are 0"
+  fails "BigDecimal#** powers of 1 equal 1"
+  fails "BigDecimal#** powers of self"
+  fails "BigDecimal#** returns 0.0 if self is infinite and argument is negative"
+  fails "BigDecimal#** returns NaN if self is NaN"
+  fails "BigDecimal#** returns infinite if self is infinite and argument is positive"
+  fails "BigDecimal#+ with Object tries to coerce the other operand to self" # Mock 'Object' expected to receive coerce(1) exactly 1 times but received it 0 times
+  fails "BigDecimal#- with Object tries to coerce the other operand to self" # Mock 'Object' expected to receive coerce(1) exactly 1 times but received it 0 times
+  fails "BigDecimal#-@ properly handles special values"
+  fails "BigDecimal#/ returns a / b" #fails a single assertion: @one.send(@method, BigDecimal('-2E5555'), *@object).should == BigDecimal('-0.5E-5555')
+  fails "BigDecimal#/ with Object tries to coerce the other operand to self" # Mock 'Object' expected to receive coerce(1) exactly 1 times but received it 0 times
+  fails "BigDecimal#/ with Rational produces a BigDecimal" # Exception: lhs.$/ is not a function
+  fails "BigDecimal#< properly handles infinity values" #fails only with mock object
+  fails "BigDecimal#<= properly handles infinity values" #fails only with mock object
+  fails "BigDecimal#<=> returns -1 if a < b" #fails only with mock object
+  fails "BigDecimal#<=> returns 1 if a > b" #fails only with mock object
+  fails "BigDecimal#> properly handles infinity values" #fails only with mock object
+  fails "BigDecimal#>= properly handles infinity values" #fails only with mock object
+  fails "BigDecimal#add with Object tries to coerce the other operand to self" # Mock 'Object' expected to receive coerce(123450000000000) exactly 1 times but received it 0 times
+  fails "BigDecimal#add with Rational produces a BigDecimal" # Exception: lhs.$+ is not a function
+  fails "BigDecimal#ceil returns the smallest integer greater or equal to self, if n is unspecified"
+  fails "BigDecimal#ceil sets n digits left of the decimal point to 0, if given n < 0"
+  fails "BigDecimal#coerce returns [other, self] both as BigDecimal"
+  fails "BigDecimal#div returns a / b with optional precision" #fails the case of > 20 decimal places for to_s('F')
+  fails "BigDecimal#div with Object tries to coerce the other operand to self" # Mock 'Object' expected to receive coerce(1) exactly 1 times but received it 0 times
+  fails "BigDecimal#div with precision set to 0 returns a / b" #fails a single assertion: @one.send(@method, BigDecimal('-2E5555'), *@object).should == BigDecimal('-0.5E-5555')
+  fails "BigDecimal#div with precision set to 0 with Object tries to coerce the other operand to self" # Mock 'Object' expected to receive coerce(1) exactly 1 times but received it 0 times
+  fails "BigDecimal#divmod array contains quotient and modulus as BigDecimal"
+  fails "BigDecimal#divmod can be reversed with * and +" # Expected 0 to equal -1
+  fails "BigDecimal#divmod returns an array of Infinity and NaN if the dividend is Infinity"
+  fails "BigDecimal#divmod returns an array of two NaNs if NaN is involved"
+  fails "BigDecimal#divmod returns an array of zero and the dividend if the divisor is Infinity"
+  fails "BigDecimal#exponent is n if number can be represented as 0.xxx*10**n"
+  fails "BigDecimal#exponent returns 0 if self is 0"
+  fails "BigDecimal#exponent returns an Integer"
+  fails "BigDecimal#fix correctly handles special values"
+  fails "BigDecimal#fix does not allow any arguments"
+  fails "BigDecimal#fix returns 0 if the absolute value is < 1"
+  fails "BigDecimal#fix returns a BigDecimal"
+  fails "BigDecimal#fix returns the integer part of the absolute value"
+  fails "BigDecimal#floor raise exception, if self is special value"
+  fails "BigDecimal#floor returns the greatest integer smaller or equal to self"
+  fails "BigDecimal#floor sets n digits left of the decimal point to 0, if given n < 0"
+  fails "BigDecimal#frac correctly handles special values"
+  fails "BigDecimal#frac returns 0 if the value is 0"
+  fails "BigDecimal#frac returns 0 if the value is an integer"
+  fails "BigDecimal#frac returns a BigDecimal"
+  fails "BigDecimal#frac returns the fractional part of the absolute value"
+  fails "BigDecimal#inspect does not add an exponent for zero values" # Exception: self.$BigDecimal(...).$inspect is not a function
+  fails "BigDecimal#inspect looks like this"
+  fails "BigDecimal#mod_part_of_divmod returns NaN if NaN is involved"
+  fails "BigDecimal#mod_part_of_divmod returns NaN if the dividend is Infinity"
+  fails "BigDecimal#mod_part_of_divmod returns self modulo other"
+  fails "BigDecimal#mod_part_of_divmod returns the dividend if the divisor is Infinity"
+  fails "BigDecimal#mod_part_of_divmod with Object tries to coerce the other operand to self" # Mock 'Object' expected to receive coerce(6543.21) exactly 1 times but received it 0 times
+  fails "BigDecimal#modulo returns NaN if NaN is involved" # FloatDomainError: Computation results to 'NaN'(Not a Number)
+  fails "BigDecimal#modulo returns NaN if the dividend is Infinity" # FloatDomainError: Computation results to 'Infinity'
+  fails "BigDecimal#modulo returns self modulo other" # Exception: new BigNumber() number type has more than 15 significant digits: 9223372036854776000
+  fails "BigDecimal#modulo returns the dividend if the divisor is Infinity" # Expected NaN to equal 1
+  fails "BigDecimal#modulo with Object tries to coerce the other operand to self" # Mock 'Object' expected to receive coerce(6543.21) exactly 1 times but received it 0 times
+  fails "BigDecimal#mult with Object tries to coerce the other operand to self" # Mock 'Object' expected to receive coerce(3e-20001) exactly 1 times but received it 0 times
+  fails "BigDecimal#power 0 to power of 0 is 1"
+  fails "BigDecimal#power 0 to powers < 0 is Infinity"
+  fails "BigDecimal#power other powers of 0 are 0"
+  fails "BigDecimal#power powers of 1 equal 1"
+  fails "BigDecimal#power powers of self"
+  fails "BigDecimal#power returns 0.0 if self is infinite and argument is negative"
+  fails "BigDecimal#power returns NaN if self is NaN"
+  fails "BigDecimal#power returns infinite if self is infinite and argument is positive"
+  fails "BigDecimal#precs returns Integers as array values"
+  fails "BigDecimal#precs returns array of two values"
+  fails "BigDecimal#precs returns the current value of significant digits as the first value"
+  fails "BigDecimal#precs returns the maximum number of significant digits as the second value"
+  fails "BigDecimal#quo returns a / b" #fails a single assertion: @one.send(@method, BigDecimal('-2E5555'), *@object).should == BigDecimal('-0.5E-5555')
+  fails "BigDecimal#quo with Object tries to coerce the other operand to self" # Mock 'Object' expected to receive coerce(1) exactly 1 times but received it 0 times
+  fails "BigDecimal#remainder coerces arguments to BigDecimal if possible"
+  fails "BigDecimal#remainder it equals modulo, if both values are of same sign"
+  fails "BigDecimal#remainder means self-arg*(self/arg).truncate"
+  fails "BigDecimal#remainder raises TypeError if the argument cannot be coerced to BigDecimal"
+  fails "BigDecimal#remainder returns NaN if Infinity is involved"
+  fails "BigDecimal#remainder returns NaN if NaN is involved"
+  fails "BigDecimal#remainder returns NaN used with zero"
+  fails "BigDecimal#remainder returns zero if used on zero"
+  fails "BigDecimal#remainder with Object tries to coerce the other operand to self" # Mock 'Object' expected to receive coerce(3) exactly 1 times but received it 0 times
+  fails "BigDecimal#round :banker rounds values > 5 up, < 5 down and == 5 towards even neighbor" # ArgumentError: [BigDecimal#round] wrong number of arguments(2 for -1)
+  fails "BigDecimal#round :ceil rounds values towards +infinity" # ArgumentError: [BigDecimal#round] wrong number of arguments(2 for -1)
+  fails "BigDecimal#round :ceiling rounds values towards +infinity" # ArgumentError: [BigDecimal#round] wrong number of arguments(2 for -1)
+  fails "BigDecimal#round :default rounds values >= 5 up, otherwise down" # ArgumentError: [BigDecimal#round] wrong number of arguments(2 for -1)
+  fails "BigDecimal#round :down rounds values towards zero" # ArgumentError: [BigDecimal#round] wrong number of arguments(2 for -1)
+  fails "BigDecimal#round :floor rounds values towards -infinity" # ArgumentError: [BigDecimal#round] wrong number of arguments(2 for -1)
+  fails "BigDecimal#round :half_down rounds values > 5 up, otherwise down" # ArgumentError: [BigDecimal#round] wrong number of arguments(2 for -1)
+  fails "BigDecimal#round :half_even rounds values > 5 up, < 5 down and == 5 towards even neighbor" # ArgumentError: [BigDecimal#round] wrong number of arguments(2 for -1)
+  fails "BigDecimal#round :half_up rounds values >= 5 up, otherwise down" # ArgumentError: [BigDecimal#round] wrong number of arguments(2 for -1)
+  fails "BigDecimal#round :truncate rounds values towards zero" # ArgumentError: [BigDecimal#round] wrong number of arguments(2 for -1)
+  fails "BigDecimal#round :up rounds values away from zero" # ArgumentError: [BigDecimal#round] wrong number of arguments(2 for -1)
+  fails "BigDecimal#round BigDecimal::ROUND_CEILING rounds values towards +infinity" # ArgumentError: [BigDecimal#round] wrong number of arguments(2 for -1)
+  fails "BigDecimal#round BigDecimal::ROUND_DOWN rounds values towards zero" # ArgumentError: [BigDecimal#round] wrong number of arguments(2 for -1)
+  fails "BigDecimal#round BigDecimal::ROUND_FLOOR rounds values towards -infinity" # ArgumentError: [BigDecimal#round] wrong number of arguments(2 for -1)
+  fails "BigDecimal#round BigDecimal::ROUND_HALF_DOWN rounds values > 5 up, otherwise down" # ArgumentError: [BigDecimal#round] wrong number of arguments(2 for -1)
+  fails "BigDecimal#round BigDecimal::ROUND_HALF_EVEN rounds values > 5 up, < 5 down and == 5 towards even neighbor" # ArgumentError: [BigDecimal#round] wrong number of arguments(2 for -1)
+  fails "BigDecimal#round BigDecimal::ROUND_HALF_UP rounds values >= 5 up, otherwise down" # ArgumentError: [BigDecimal#round] wrong number of arguments(2 for -1)
+  fails "BigDecimal#round BigDecimal::ROUND_UP rounds values away from zero" # ArgumentError: [BigDecimal#round] wrong number of arguments(2 for -1)
+  fails "BigDecimal#round raise for a non-existent round mode" # ArgumentError: [BigDecimal#round] wrong number of arguments(2 for -1)
+  fails "BigDecimal#round uses default rounding method unless given"
+  fails "BigDecimal#sign returns negative value if BigDecimal less than 0"
+  fails "BigDecimal#sign returns positive value if BigDecimal greater than 0"
+  fails "BigDecimal#split first value: -1 for numbers < 0" # NoMethodError: undefined method `split' for 3.14159265358979323846264338327950288419716939937510582097494459230781640628620899862803482534211706798214808651328230664709384460955058223172535940812848111745028410270193852110555964462294895493038196442881097566593014782083152134043
+  fails "BigDecimal#split first value: 0 if BigDecimal is NaN" # NoMethodError: undefined method `split' for 3.14159265358979323846264338327950288419716939937510582097494459230781640628620899862803482534211706798214808651328230664709384460955058223172535940812848111745028410270193852110555964462294895493038196442881097566593014782083152134043
+  fails "BigDecimal#split first value: 1 for numbers > 0" # NoMethodError: undefined method `split' for 3.14159265358979323846264338327950288419716939937510582097494459230781640628620899862803482534211706798214808651328230664709384460955058223172535940812848111745028410270193852110555964462294895493038196442881097566593014782083152134043
+  fails "BigDecimal#split fourth value: the exponent" # NoMethodError: undefined method `split' for 3.14159265358979323846264338327950288419716939937510582097494459230781640628620899862803482534211706798214808651328230664709384460955058223172535940812848111745028410270193852110555964462294895493038196442881097566593014782083152134043
+  fails "BigDecimal#split second value: a string with the significant digits" # NoMethodError: undefined method `split' for 3.14159265358979323846264338327950288419716939937510582097494459230781640628620899862803482534211706798214808651328230664709384460955058223172535940812848111745028410270193852110555964462294895493038196442881097566593014782083152134043
+  fails "BigDecimal#split splits BigDecimal in an array with four values"
+  fails "BigDecimal#split third value: the base (currently always ten)" # NoMethodError: undefined method `split' for 3.14159265358979323846264338327950288419716939937510582097494459230781640628620899862803482534211706798214808651328230664709384460955058223172535940812848111745028410270193852110555964462294895493038196442881097566593014782083152134043
+  fails "BigDecimal#sqrt raises ArgumentError if 2 arguments are given"
+  fails "BigDecimal#sqrt raises ArgumentError if a negative number is given"
+  fails "BigDecimal#sqrt raises ArgumentError when no argument is given"
+  fails "BigDecimal#sqrt raises FloatDomainError for NaN"
+  fails "BigDecimal#sqrt raises FloatDomainError for negative infinity"
+  fails "BigDecimal#sqrt raises FloatDomainError on negative values"
+  fails "BigDecimal#sqrt raises TypeError if a plain Object is given"
+  fails "BigDecimal#sqrt raises TypeError if a string is given"
+  fails "BigDecimal#sqrt raises TypeError if nil is given"
+  fails "BigDecimal#sqrt returns 0 for 0, +0.0 and -0.0"
+  fails "BigDecimal#sqrt returns 1 if precision is 0 or 1"
+  fails "BigDecimal#sqrt returns positive infinity for infinity" # NoMethodError: undefined method `sqrt' for Infinity
+  fails "BigDecimal#sqrt returns square root of 0.9E-99999 with desired precision"
+  fails "BigDecimal#sqrt returns square root of 121 with desired precision"
+  fails "BigDecimal#sqrt returns square root of 2 with desired precision"
+  fails "BigDecimal#sqrt returns square root of 3 with desired precision"
+  fails "BigDecimal#sub with Object tries to coerce the other operand to self" # Mock 'Object' expected to receive coerce(123450000000000) exactly 1 times but received it 0 times
+  fails "BigDecimal#sub with Rational produces a BigDecimal" # Exception: lhs.$- is not a function
+  fails "BigDecimal#to_f properly handles special values"
+  fails "BigDecimal#to_i raises FloatDomainError if BigDecimal is infinity or NaN"
+  fails "BigDecimal#to_i returns Integer otherwise" # NoMethodError: undefined method `to_i' for 3e-20001
+  fails "BigDecimal#to_int raises FloatDomainError if BigDecimal is infinity or NaN"
+  fails "BigDecimal#to_int returns Integer otherwise" # NoMethodError: undefined method `to_i' for 3e-20001
+  fails "BigDecimal#to_r returns a Rational with bignum values" # NoMethodError: undefined method `to_r' for 3.141592653589793238462643
+  fails "BigDecimal#to_r returns a Rational" # NoMethodError: undefined method `to_r' for 3.14159
+  fails "BigDecimal#to_s can return a leading space for values > 0"
+  fails "BigDecimal#to_s can use conventional floating point notation"
+  fails "BigDecimal#to_s can use engineering notation"
+  fails "BigDecimal#to_s does not add an exponent for zero values" # Exception: self.$BigDecimal(...).$to_s is not a function
+  fails "BigDecimal#to_s inserts a space every n chars, if integer n is supplied"
+  fails "BigDecimal#to_s removes trailing spaces in floating point notation"
+  fails "BigDecimal#to_s return type is of class String" # Exception: self.bigdec.$to_s is not a function
+  fails "BigDecimal#to_s returns a String in US-ASCII encoding when Encoding.default_internal is nil" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "BigDecimal#to_s returns a String in US-ASCII encoding when Encoding.default_internal is not nil" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "BigDecimal#to_s starts with + if + is supplied and value is positive"
+  fails "BigDecimal#to_s takes an optional argument" # Expected to not get Exception
+  fails "BigDecimal#to_s the default format looks like 0.xxxxenn" # Expected "3.14159265358979323846264338327950288419716939937" to match /^0\.[0-9]*e[0-9]*$/
+  fails "BigDecimal#truncate returns Infinity if self is infinite"
+  fails "BigDecimal#truncate returns the same value if self is special value"
+  fails "BigDecimal#truncate returns value of given precision otherwise"
+  fails "BigDecimal.double_fig returns the number of digits a Float number is allowed to have"
+  fails "BigDecimal.limit picks the global precision when limit 0 specified" # Expected 0.8888 to equal 0.889
+  fails "BigDecimal.limit picks the specified precision over global limit" # Expected 0.888 to equal 0.89
+  fails "BigDecimal.limit returns the value before set if the passed argument is nil or is not specified"
+  fails "BigDecimal.limit uses the global limit if no precision is specified" # Expected 0.888 to equal 0.9
+  fails "BigDecimal.mode raise an exception if the flag is true"
+  fails "BigDecimal.mode returns Infinity when too big"
+  fails "BigDecimal.mode returns the appropriate value and continue the computation if the flag is false"
+  fails "Float#to_d returns appropriate BigDecimal zero for signed zero" # NoMethodError: undefined method `to_d' for 0
+  fails "Kernel#BigDecimal BigDecimal(Rational) with bigger-than-double numerator" # Expected 1000000000000000000 > 18446744073709552000 to be truthy but was false
+  fails "Kernel#BigDecimal accepts significant digits >= given precision" # NoMethodError: undefined method `precs' for 3.1415923
+  fails "Kernel#BigDecimal allows for [eEdD] as exponent separator" # Exception: new BigNumber() not a number: 12345.67d89
+  fails "Kernel#BigDecimal coerces the value argument with #to_str" # Exception: new BigNumber() not a number: #<MockObject:0x666>
+  fails "Kernel#BigDecimal creates a new object of class BigDecimal" # Expected 1 to equal (1/1)
+  fails "Kernel#BigDecimal determines precision from initial value" # NoMethodError: undefined method `precs' for 3.14159265358979323846264338327950288419716939937510582097494459230781640628620899862803482534211706798214808651328230664709384460955058223172535940812848111745028410270193852110555964462294895493038196442881097566593014782083152134043
+  fails "Kernel#BigDecimal does not call to_s when calling inspect" # Expected "44.44" == "0.4444e2" to be truthy but was false
+  fails "Kernel#BigDecimal does not ignores trailing garbage" # Expected ArgumentError but got: Exception (new BigNumber() not a number: 123E45ruby)
+  fails "Kernel#BigDecimal pre-coerces long integers" # Expected 262000 == 1130000000000000 to be truthy but was false
+  fails "Kernel#BigDecimal process underscores as Float()" # Exception: new BigNumber() not a number: 12_345.67E89
+  fails "Kernel#BigDecimal raises ArgumentError for invalid strings" # Exception: new BigNumber() not a number: ruby
+  fails "Kernel#BigDecimal raises ArgumentError when Float is used without precision" # Expected ArgumentError but no exception was raised (1 was returned)
+  fails "Kernel#BigDecimal when interacting with Rational BigDecimal maximum precision is nine more than precision except for abnormals" # TypeError: Rational can't be coerced into BigDecimal
+  fails "Kernel#BigDecimal when interacting with Rational BigDecimal precision is the number of digits rounded up to a multiple of nine" # TypeError: Rational can't be coerced into BigDecimal
+  fails "Kernel#BigDecimal when interacting with Rational BigDecimal(Rational, 18) produces the result we expect" # TypeError: Rational can't be coerced into BigDecimal
+  fails "Kernel#BigDecimal when interacting with Rational BigDecimal(Rational, BigDecimal.precs[0]) produces the result we expect" # TypeError: Rational can't be coerced into BigDecimal
+  fails "Kernel#BigDecimal when interacting with Rational has the LHS print as expected" # TypeError: Rational can't be coerced into BigDecimal
+  fails "Kernel#BigDecimal when interacting with Rational has the RHS print as expected" # TypeError: Rational can't be coerced into BigDecimal
+  fails "Kernel#BigDecimal when interacting with Rational has the expected maximum precision on the LHS" # TypeError: Rational can't be coerced into BigDecimal
+  fails "Kernel#BigDecimal when interacting with Rational has the expected precision on the LHS" # TypeError: Rational can't be coerced into BigDecimal
+  fails "Kernel#BigDecimal when interacting with Rational produces a BigDecimal" # TypeError: Rational can't be coerced into BigDecimal
+  fails "Kernel#BigDecimal when interacting with Rational produces the correct class for other arithmetic operators" # TypeError: Rational can't be coerced into BigDecimal
+  fails "Kernel#BigDecimal when interacting with Rational produces the expected result when done via Float" # TypeError: Rational can't be coerced into BigDecimal
+  fails "Kernel#BigDecimal when interacting with Rational produces the expected result when done via to_f" # TypeError: Rational can't be coerced into BigDecimal
+  fails "Kernel#BigDecimal when interacting with Rational produces the expected result" # TypeError: Rational can't be coerced into BigDecimal
+  fails "Kernel#BigDecimal with exception: false returns nil for invalid strings" # Exception: new BigNumber() not a number: invalid
+  fails "Kernel#Pathname is a private instance method" # Expected Kernel to have private instance method 'Pathname' but it does not
+end
diff --git a/spec/filters/bugs/binding.rb b/spec/filters/bugs/binding.rb
new file mode 100644
index 00000000..0dff356f
--- /dev/null
+++ b/spec/filters/bugs/binding.rb
@@ -0,0 +1,26 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "Binding" do
+  fails "Binding#clone is a shallow copy of the Binding object" # NoMethodError: undefined method `a' for #<BindingSpecs::Demo:0x1c7b0>
+  fails "Binding#clone returns a copy of the Binding object" # NoMethodError: undefined method `a' for #<BindingSpecs::Demo:0x1c958>
+  fails "Binding#dup is a shallow copy of the Binding object" # NoMethodError: undefined method `a' for #<BindingSpecs::Demo:0x67b30>
+  fails "Binding#dup returns a copy of the Binding object" # NoMethodError: undefined method `a' for #<BindingSpecs::Demo:0x67cd8>
+  fails "Binding#eval behaves like Kernel.eval(..., self)" # NoMethodError: undefined method `a' for #<BindingSpecs::Demo:0x8e1d4>
+  fails "Binding#eval does not leak variables to cloned bindings" # Expected [] == ["x"] to be truthy but was false
+  fails "Binding#eval reflects refinements activated in the binding scope" # NameError: uninitialized constant BindingSpecs::Refined
+  fails "Binding#eval starts with a __LINE__ from the third argument if passed" # Expected 1 == 88 to be truthy but was false
+  fails "Binding#eval starts with line 1 if the Binding is created with #send" # RuntimeError: Opal doesn't support dynamic calls to binding
+  fails "Binding#eval with __method__ returns the method where the Binding was created" # Expected nil == "get_binding_and_method" to be truthy but was false
+  fails "Binding#eval with __method__ returns the method where the Binding was created, ignoring #send" # Expected nil == "get_binding_with_send_and_method" to be truthy but was false
+  fails "Binding#irb creates an IRB session with the binding in scope" # NoMethodError: undefined method `popen' for IO
+  fails "Binding#local_variable_defined? allows usage of an object responding to #to_str as the variable name" # Expected false == true to be truthy but was false
+  fails "Binding#local_variable_defined? returns true when a local variable is defined using Binding#local_variable_set" # Expected false == true to be truthy but was false
+  fails "Binding#local_variable_defined? returns true when a local variable is defined using eval()" # Expected false == true to be truthy but was false
+  fails "Binding#local_variable_get gets a local variable defined using eval()" # Exception: number is not defined
+  fails "Binding#local_variable_set adds nonexistent variables to the binding's eval scope" # NoMethodError: undefined method `local_variables' for #<BindingSpecs::Demo:0x77602>
+  fails "Binding#local_variable_set raises a NameError on global access" # Expected NameError but no exception was raised ("" was returned)
+  fails "Binding#local_variable_set raises a NameError on special variable access" # Expected NameError but got: Exception (Unexpected token '~')
+  fails "Binding#local_variable_set sets a local variable using an object responding to #to_str as the variable name" # Exception: Invalid or unexpected token
+  fails "Binding#local_variables includes local variables defined after calling binding.local_variables" # Expected [] == ["a", "b"] to be truthy but was false
+  fails "Binding#local_variables includes local variables of inherited scopes and eval'ed context" # Expected ["c"] == ["c", "a", "b", "p"] to be truthy but was false
+  fails "Binding#local_variables includes new variables defined in the binding" # Expected ["b"] == ["a", "b"] to be truthy but was false
+end
diff --git a/spec/filters/bugs/boolean.rb b/spec/filters/bugs/boolean.rb
new file mode 100644
index 00000000..565dd77f
--- /dev/null
+++ b/spec/filters/bugs/boolean.rb
@@ -0,0 +1,3 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "Boolean" do
+end
diff --git a/spec/filters/bugs/class.rb b/spec/filters/bugs/class.rb
new file mode 100644
index 00000000..8b2ee2c7
--- /dev/null
+++ b/spec/filters/bugs/class.rb
@@ -0,0 +1,14 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "Class" do
+  fails "Class#allocate raises TypeError for #superclass"
+  fails "Class#dup duplicates both the class and the singleton class"
+  fails "Class#dup retains an included module in the ancestor chain for the singleton class"
+  fails "Class#dup retains the correct ancestor chain for the singleton class"
+  fails "Class#initialize raises a TypeError when called on BasicObject"
+  fails "Class#initialize raises a TypeError when called on already initialized classes"
+  fails "Class#initialize when given the Class raises a TypeError"
+  fails "Class#new uses the internal allocator and does not call #allocate" # RuntimeError: allocate should not be called
+  fails "Class.new raises a TypeError if passed a metaclass"
+  fails_badly "Class#descendants returns a list of classes descended from self (excluding self)" # GC/Spec order issue. Expected [#<Class:0x2e77c>,  #<Class:0x2e79a>,  #<Class:0x37368>,  ModuleSpecs::Child,  ModuleSpecs::Child2,  ModuleSpecs::Grandchild] == [ModuleSpecs::Child, ModuleSpecs::Child2, ModuleSpecs::Grandchild] to be truthy but was false
+  fails_badly "Class#subclasses returns a list of classes directly inheriting from self" # GC/Spec order issue. Expected [#<Class:0x2e77c>,  #<Class:0x2e79a>,  #<Class:0x37368>,  ModuleSpecs::Child,  ModuleSpecs::Child2] == [ModuleSpecs::Child, ModuleSpecs::Child2] to be truthy but was false
+end
diff --git a/spec/filters/bugs/complex.rb b/spec/filters/bugs/complex.rb
new file mode 100644
index 00000000..67447478
--- /dev/null
+++ b/spec/filters/bugs/complex.rb
@@ -0,0 +1,7 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "Complex" do
+  fails "Complex#<=> returns 0, 1, or -1 if self and argument do not have imaginary part" # Expected nil == 1 to be truthy but was false
+  fails "Complex#coerce returns an array containing other as Complex and self when other is a Numeric which responds to #real? with true"
+  fails "Complex#to_c returns self" # Expected ((1+5i)+0i) to be identical to (1+5i)
+  fails "Complex#to_c returns the same value" # Expected ((1+5i)+0i) == (1+5i) to be truthy but was false
+end
diff --git a/spec/filters/bugs/date.rb b/spec/filters/bugs/date.rb
new file mode 100644
index 00000000..3d0ae6ad
--- /dev/null
+++ b/spec/filters/bugs/date.rb
@@ -0,0 +1,96 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "Date" do
+  fails "Date#>> returns the day of the reform if date falls within calendar reform"
+  fails "Date#ajd determines the Astronomical Julian day"
+  fails "Date#amjd determines the Astronomical Modified Julian day"
+  fails "Date#civil creates a Date for different calendar reform dates"
+  fails "Date#civil doesn't create dates for invalid arguments"
+  fails "Date#commercial creates a Date for Julian Day Number day 0 by default"
+  fails "Date#commercial creates a Date for the correct day given the year, week and day number" # NoMethodError: undefined method `commercial' for Date
+  fails "Date#commercial creates a Date for the monday in the year and week given" # NoMethodError: undefined method `commercial' for Date
+  fails "Date#commercial creates only Date objects for valid weeks"
+  fails "Date#cwyear determines the commercial year"
+  fails "Date#day_fraction determines the day fraction"
+  fails "Date#england converts a date object into another with the English calendar reform"
+  fails "Date#gregorian converts a date object into another with the Gregorian calendar"
+  fails "Date#gregorian? marks a day after the calendar reform as Julian"
+  fails "Date#gregorian? marks a day before the calendar reform as Julian"
+  fails "Date#hash returns the same value for equal dates"
+  fails "Date#italy converts a date object into another with the Italian calendar reform"
+  fails "Date#julian converts a date object into another with the Julian calendar"
+  fails "Date#julian? marks a day before the calendar reform as Julian"
+  fails "Date#ld determines the Modified Julian day"
+  fails "Date#mjd determines the Modified Julian day"
+  fails "Date#new_start converts a date object into another with a new calendar reform"
+  fails "Date#parse coerces using to_str" # ArgumentError: invalid date
+  fails "Date#parse parses a day name into a Date object"
+  fails "Date#parse parses a month day into a Date object"
+  fails "Date#parse parses a month name into a Date object"
+  fails "Date#parse raises a TypeError trying to parse non-String-like object" # ArgumentError: invalid date
+  fails "Date#strftime should be able to print the commercial year with leading zeroes"
+  fails "Date#strftime should be able to print the commercial year with only two digits"
+  fails "Date#strftime should be able to show a full notation"
+  fails "Date#strftime should be able to show the commercial week day"
+  fails "Date#strftime should be able to show the number of seconds since the unix epoch for a date" # Expected "954964800" to equal "954979200"
+  fails "Date#strftime should be able to show the timezone of the date with a : separator"
+  fails "Date#strftime should be able to show the timezone with a : separator"
+  fails "Date#strftime should be able to show the week number with the week starting on Sunday (%U) and Monday (%W)"
+  fails "Date#strftime shows the number of milliseconds since epoch"
+  fails "Date#strptime parses a century"
+  fails "Date#strptime parses a commercial week day"
+  fails "Date#strptime parses a commercial week"
+  fails "Date#strptime parses a commercial year with leading zeroes"
+  fails "Date#strptime parses a commercial year with only two digits"
+  fails "Date#strptime parses a date given MM/DD/YY"
+  fails "Date#strptime parses a date given as YYYY-MM-DD"
+  fails "Date#strptime parses a date given in full notation"
+  fails "Date#strptime parses a date with slashes"
+  fails "Date#strptime parses a full date"
+  fails "Date#strptime parses a full day name"
+  fails "Date#strptime parses a full month name"
+  fails "Date#strptime parses a month day with leading spaces"
+  fails "Date#strptime parses a month day with leading zeroes"
+  fails "Date#strptime parses a month with leading zeroes"
+  fails "Date#strptime parses a short day name"
+  fails "Date#strptime parses a short month name"
+  fails "Date#strptime parses a week day"
+  fails "Date#strptime parses a week number for a week starting on Monday"
+  fails "Date#strptime parses a week number for a week starting on Sunday"
+  fails "Date#strptime parses a year day with leading zeroes"
+  fails "Date#strptime parses a year in YY format"
+  fails "Date#strptime parses a year in YYYY format"
+  fails "Date#strptime returns January 1, 4713 BCE when given no arguments"
+  fails "Date#strptime uses the default format when not given a date format"
+  fails "Date#valid_civil? handles negative months and days"
+  fails "Date#valid_civil? returns false if it is not a valid civil date"
+  fails "Date#valid_civil? returns true if it is a valid civil date"
+  fails "Date#valid_commercial? handles negative week and day numbers"
+  fails "Date#valid_commercial? returns false it is not a valid commercial date"
+  fails "Date#valid_commercial? returns true if it is a valid commercial date"
+  fails "Date#valid_date? handles negative months and days"
+  fails "Date#valid_date? returns false if it is not a valid civil date"
+  fails "Date#valid_date? returns true if it is a valid civil date"
+  fails "Date._iso8601 returns an empty hash if the argument is a invalid Date" # NoMethodError: undefined method `_iso8601' for Date
+  fails "Date._rfc3339 returns an empty hash if the argument is a invalid Date" # NoMethodError: undefined method `_rfc3339' for Date
+  fails "Date.iso8601 parses YYYY-MM-DD into a Date object" # NoMethodError: undefined method `iso8601' for Date
+  fails "Date.iso8601 parses YYYYMMDD into a Date object" # NoMethodError: undefined method `iso8601' for Date
+  fails "Date.iso8601 parses a StringSubclass into a Date object" # NoMethodError: undefined method `iso8601' for Date
+  fails "Date.iso8601 parses a Symbol into a Date object" # NoMethodError: undefined method `iso8601' for Date
+  fails "Date.iso8601 parses a negative Date" # NoMethodError: undefined method `iso8601' for Date
+  fails "Date.iso8601 raises a TypeError when passed an Object" # NoMethodError: undefined method `iso8601' for Date
+  fails "Date.iso8601 raises an ArgumentError when passed a Symbol without a valid Date" # NoMethodError: undefined method `iso8601' for Date
+  fails "Date.jd constructs a Date object if passed a Julian day"
+  fails "Date.jd constructs a Date object if passed a negative number"
+  fails "Date.jd returns a Date object representing Julian day 0 (-4712-01-01) if no arguments passed"
+  fails "Date.julian_leap? determines whether a year is a leap year in the Julian calendar"
+  fails "Date.julian_leap? determines whether a year is not a leap year in the Julian calendar"
+  fails "Date.new creates a Date for different calendar reform dates"
+  fails "Date.new doesn't create dates for invalid arguments"
+  fails "Date.ordinal constructs a Date object from an ordinal date"
+  fails "Date.valid_jd? returns false if passed false" # NoMethodError: undefined method `valid_jd?' for Date
+  fails "Date.valid_jd? returns false if passed nil"
+  fails "Date.valid_jd? returns false if passed symbol" # NoMethodError: undefined method `valid_jd?' for Date
+  fails "Date.valid_jd? returns true if passed a number value" # NoMethodError: undefined method `valid_jd?' for Date
+  fails "Date.valid_ordinal? determines if the date is a valid ordinal date"
+  fails "Date.valid_ordinal? handles negative day numbers"
+end
diff --git a/spec/filters/bugs/datetime.rb b/spec/filters/bugs/datetime.rb
new file mode 100644
index 00000000..aa8401fd
--- /dev/null
+++ b/spec/filters/bugs/datetime.rb
@@ -0,0 +1,65 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "DateTime" do
+  fails "DateTime#+ is able to add sub-millisecond precision values" # Expected 0 == 864864 to be truthy but was false
+  fails "DateTime#- correctly calculates sub-millisecond time differences" # Expected 0 == 59.000001 to be truthy but was false
+  fails "DateTime#- is able to subtract sub-millisecond precision values" # TypeError: TypeError
+  fails "DateTime#hour adds 24 to negative hours" # ArgumentError: hour out of range: -10
+  fails "DateTime#hour raises an error for Float" # Expected ArgumentError but no exception was raised (1 was returned)
+  fails "DateTime#hour raises an error for Rational" # Expected ArgumentError but no exception was raised (#<DateTime:0x74530 @date=-4712-01-01 00:00:00 UTC> was returned)
+  fails "DateTime#second adds 60 to negative values" # ArgumentError: sec out of range: -20
+  fails "DateTime#second raises an error when minute is given as a rational" # Expected ArgumentError but no exception was raised (#<DateTime:0xa6acc @date=-4712-01-01 00:05:00 UTC> was returned)
+  fails "DateTime#second raises an error, when the second is greater or equal than 60" # Expected ArgumentError but no exception was raised (#<DateTime:0xa69da @date=-4712-01-01 00:01:00 UTC> was returned)
+  fails "DateTime#strftime returns the timezone with %Z" # Expected "Central European Summer Time" == "+02:00" to be truthy but was false
+  fails "DateTime#strftime should be able to print the commercial year with leading zeroes" # Expected "200" == "0200" to be truthy but was false
+  fails "DateTime#strftime should be able to print the commercial year with only two digits" # TypeError: no implicit conversion of Range into Integer
+  fails "DateTime#strftime should be able to print the datetime with no argument" # ArgumentError: [Time#strftime] wrong number of arguments (given 0, expected 1)
+  fails "DateTime#strftime should be able to show a full notation" # Expected "%+" == "Sat Feb  3 04:05:06 +00:00 2001" to be truthy but was false
+  fails "DateTime#strftime should be able to show default Logger format" # Expected "2001-12-03T04:05:06.000000 " == "2001-12-03T04:05:06.100000 " to be truthy but was false
+  fails "DateTime#strftime should be able to show the commercial week day" # Expected "1" == "7" to be truthy but was false
+  fails "DateTime#strftime should be able to show the number of seconds since the unix epoch" # ArgumentError: Opal doesn't support other types for a timezone argument than Integer and String
+  fails "DateTime#strftime should be able to show the timezone of the date with a : separator" # Expected "+0200" == "+0000" to be truthy but was false
+  fails "DateTime#strftime should be able to show the timezone with a : separator" # Expected "Central European Standard Time" == "+00:00" to be truthy but was false
+  fails "DateTime#strftime should be able to show the week number with the week starting on Sunday (%U) and Monday (%W)" # Expected "%U" == "14" to be truthy but was false
+  fails "DateTime#strftime shows the number of milliseconds since epoch" # Expected "%Q" == "0" to be truthy but was false
+  fails "DateTime#strftime with %L formats the milliseconds of the second" # Expected "000" == "100" to be truthy but was false
+  fails "DateTime#strftime with %N formats the microseconds of the second with %6N" # Expected "000000" == "042000" to be truthy but was false
+  fails "DateTime#strftime with %N formats the milliseconds of the second with %3N" # Expected "000" == "050" to be truthy but was false
+  fails "DateTime#strftime with %N formats the nanoseconds of the second with %9N" # Expected "000000000" == "001234000" to be truthy but was false
+  fails "DateTime#strftime with %N formats the nanoseconds of the second with %N" # Expected "000000000" == "001234560" to be truthy but was false
+  fails "DateTime#strftime with %N formats the picoseconds of the second with %12N" # Expected "000000000000" == "999999999999" to be truthy but was false
+  fails "DateTime#strftime with %z formats a UTC time offset as '+0000'" # ArgumentError: Opal doesn't support other types for a timezone argument than Integer and String
+  fails "DateTime#strftime with %z formats a local time with negative UTC offset as '-HHMM'" # ArgumentError: Opal doesn't support other types for a timezone argument than Integer and String
+  fails "DateTime#strftime with %z formats a local time with positive UTC offset as '+HHMM'" # ArgumentError: Opal doesn't support other types for a timezone argument than Integer and String
+  fails "DateTime#strftime with %z formats a time with fixed negative offset as '-HHMM'" # ArgumentError: Opal doesn't support other types for a timezone argument than Integer and String
+  fails "DateTime#strftime with %z formats a time with fixed offset as '+/-HH:MM' with ':' specifier" # ArgumentError: Opal doesn't support other types for a timezone argument than Integer and String
+  fails "DateTime#strftime with %z formats a time with fixed offset as '+/-HH:MM:SS' with '::' specifier" # ArgumentError: Opal doesn't support other types for a timezone argument than Integer and String
+  fails "DateTime#strftime with %z formats a time with fixed positive offset as '+HHMM'" # ArgumentError: Opal doesn't support other types for a timezone argument than Integer and String
+  fails "DateTime#to_time preserves the same time regardless of local time or zone" # Expected 180 == 10800 to be truthy but was false
+  fails "DateTime.min adds 60 to negative minutes" # ArgumentError: min out of range: -20
+  fails "DateTime.min raises an error for Float" # Expected ArgumentError but no exception was raised (#<DateTime:0x1c098 @date=-4712-01-01 00:05:00 UTC> was returned)
+  fails "DateTime.min raises an error for Rational" # Expected ArgumentError but no exception was raised (#<DateTime:0x1bee2 @date=-4712-01-01 02:00:00 UTC> was returned)
+  fails "DateTime.minute adds 60 to negative minutes" # ArgumentError: min out of range: -20
+  fails "DateTime.minute raises an error for Float" # Expected ArgumentError but no exception was raised (#<DateTime:0x365c2 @date=-4712-01-01 00:05:00 UTC> was returned)
+  fails "DateTime.minute raises an error for Rational" # Expected ArgumentError but no exception was raised (#<DateTime:0x3669a @date=-4712-01-01 02:00:00 UTC> was returned)
+  fails "DateTime.new takes the seventh argument as an offset" # Expected 0.000008101851851851852 == 0.7 to be truthy but was false
+  fails "DateTime.now grabs the local timezone" # Expected "+01:00" == "-08:00" to be truthy but was false
+  fails "DateTime.parse YYYY-MM-DDTHH:MM:SS format parses YYYY-MM-DDTHH:MM:SS into a DateTime object" # Expected #<DateTime:0x45dd0 @date=2012-11-08 15:43:59 +0100, @start=2299161> == #<DateTime:0x45dd4 @date=2012-11-08 15:43:59 UTC, @start=2299161> to be truthy but was false
+  fails "DateTime.parse YYYY-MM-DDTHH:MM:SS format throws an argument error for invalid day values" # Expected ArgumentError but no exception was raised (#<DateTime:0x18d2e @date=NaN-NaN-NaN NaN:NaN:NaN -NaNNaN> was returned)
+  fails "DateTime.parse YYYY-MM-DDTHH:MM:SS format throws an argument error for invalid hour values" # Expected ArgumentError but no exception was raised (#<DateTime:0x18e00 @date=NaN-NaN-NaN NaN:NaN:NaN -NaNNaN> was returned)
+  fails "DateTime.parse YYYY-MM-DDTHH:MM:SS format throws an argument error for invalid minute values" # Expected ArgumentError but no exception was raised (#<DateTime:0x18ed8 @date=NaN-NaN-NaN NaN:NaN:NaN -NaNNaN> was returned)
+  fails "DateTime.parse YYYY-MM-DDTHH:MM:SS format throws an argument error for invalid month values" # Expected ArgumentError but no exception was raised (#<DateTime:0x18c5c @date=NaN-NaN-NaN NaN:NaN:NaN -NaNNaN> was returned)
+  fails "DateTime.parse YYYY-MM-DDTHH:MM:SS format throws an argument error for invalid second values" # Expected ArgumentError but no exception was raised (#<DateTime:0x18b8a @date=NaN-NaN-NaN NaN:NaN:NaN -NaNNaN> was returned)
+  fails "DateTime.parse parses DD as month day number" # Expected #<DateTime:0x18582 @date=2001-10-01 00:00:00 +0200> == #<DateTime:0x1858a @date=2022-02-10 00:00:00 +0100> to be truthy but was false
+  fails "DateTime.parse parses DDD as year day number" # Expected #<DateTime:0x18818 @date=100-01-01 00:00:00 +0124> == #<DateTime:0x18820 @date=2022-04-10 00:00:00 +0200> to be truthy but was false
+  fails "DateTime.parse parses MMDD as month and day" # Expected #<DateTime:0x183d0 @date=1108-01-01 00:00:00 +0124> == #<DateTime:0x183d6 @date=2022-11-08 00:00:00 +0100> to be truthy but was false
+  fails "DateTime.parse parses YYDDD as year and day number in 1969--2068" # Expected #<DateTime:0x189cc @date=10100-01-01 00:00:00 +0100> == #<DateTime:0x189d0 @date=2010-04-10 00:00:00 +0200> to be truthy but was false
+  fails "DateTime.parse parses YYMMDD as year, month and day in 1969--2068" # Expected #<DateTime:0x18216 @date=201023-01-01 00:00:00 +0100> == #<DateTime:0x1821a @date=2020-10-23 00:00:00 +0200> to be truthy but was false
+  fails "DateTime.parse parses a day name into a DateTime object" # NoMethodError: undefined method `cwyear' for #<DateTime:0x18808 @date=NaN-NaN-NaN NaN:NaN:NaN -NaNNaN>
+  fails "DateTime.parse throws an argument error for a single digit" # Expected ArgumentError but no exception was raised (#<DateTime:0x18738 @date=2001-01-01 00:00:00 +0100> was returned)
+  fails "DateTime.parse(.) parses DD.MM.YYYY into a DateTime object" # Expected 10 == 1 to be truthy but was false
+  fails "DateTime.parse(.) parses YY.MM.DD into a DateTime object using the year 20YY" # Expected 2007 == 2010 to be truthy but was false
+  fails "DateTime.parse(.) parses YY.MM.DD using the year digits as 20YY when given true as additional argument" # ArgumentError: [DateTime.parse] wrong number of arguments (given 2, expected 1)
+  fails "DateTime.sec adds 60 to negative values" # ArgumentError: sec out of range: -20
+  fails "DateTime.sec raises an error when minute is given as a rational" # Expected ArgumentError but no exception was raised (#<DateTime:0x1bccc @date=-4712-01-01 00:05:00 UTC> was returned)
+  fails "DateTime.sec raises an error, when the second is greater or equal than 60" # Expected ArgumentError but no exception was raised (#<DateTime:0x1bdb8 @date=-4712-01-01 00:01:00 UTC> was returned)
+end
diff --git a/spec/filters/bugs/encoding.rb b/spec/filters/bugs/encoding.rb
new file mode 100644
index 00000000..379c6bf5
--- /dev/null
+++ b/spec/filters/bugs/encoding.rb
@@ -0,0 +1,215 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "Encoding" do
+  fails "File.basename returns the basename with the same encoding as the original" # NameError: uninitialized constant Encoding::Windows_1250
+  fails "Integer#to_s bignum returns a String in US-ASCII encoding when Encoding.default_internal is nil" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "Integer#to_s bignum returns a String in US-ASCII encoding when Encoding.default_internal is not nil" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "Integer#to_s bignum when given a base raises an ArgumentError if the base is less than 2 or higher than 36" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "Integer#to_s bignum when given a base returns self converted to a String using the given base" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "Integer#to_s bignum when given no base returns self converted to a String using base 10" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "Integer#to_s fixnum returns a String in US-ASCII encoding when Encoding.default_internal is nil" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "Integer#to_s fixnum returns a String in US-ASCII encoding when Encoding.default_internal is not nil" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "Integer#to_s fixnum when given a base raises an ArgumentError if the base is less than 2 or higher than 36" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "Integer#to_s fixnum when given a base returns self converted to a String in the given base" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "Integer#to_s fixnum when no base given returns self converted to a String using base 10" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "Kernel#sprintf returns a String in the same encoding as the format String if compatible" # NameError: uninitialized constant Encoding::KOI8_U
+  fails "Marshal.dump when passed an IO calls binmode when it's defined" # ArgumentError: [Marshal.dump] wrong number of arguments(2 for 1)
+  fails "Marshal.dump with a String dumps a String in another encoding" # Expected "\u0004\b\"\u000Fm\u0000ö\u0000h\u0000r\u0000e\u0000" to equal "\u0004\bI\"\u000Fm\u0000ö\u0000h\u0000r\u0000e\u0000\u0006:\rencoding\"\rUTF-16LE"
+  fails "Marshal.dump with a String dumps a US-ASCII String" # Expected "\u0004\b\"\babc" to equal "\u0004\bI\"\babc\u0006:\u0006EF"
+  fails "Marshal.dump with a String dumps a UTF-8 String" # Expected "\u0004\b\"\nmöhre" to equal "\u0004\bI\"\vmöhre\u0006:\u0006ET"
+  fails "Marshal.dump with a String dumps multiple strings using symlinks for the :E (encoding) symbol" # Expected "\u0004\b[\a\"\u0000@\u0006" to equal "\u0004\b[\aI\"\u0000\u0006:\u0006EFI\"\u0000\u0006;\u0000T"
+  fails "Marshal.load for a String loads a String in another encoding" # NameError: 'encoding' is not allowed as an instance variable name
+  fails "Marshal.load for a String loads a US-ASCII String" # Expected #<Encoding:UTF-16LE> to be identical to #<Encoding:ASCII-8BIT (dummy)>
+  fails "MatchData#post_match sets an empty result to the encoding of the source String" # NameError: uninitialized constant Encoding::ISO_8859_1
+  fails "MatchData#post_match sets the encoding to the encoding of the source String" # NameError: uninitialized constant Encoding::EUC_JP
+  fails "MatchData#pre_match sets an empty result to the encoding of the source String" # NameError: uninitialized constant Encoding::ISO_8859_1
+  fails "MatchData#pre_match sets the encoding to the encoding of the source String" # NameError: uninitialized constant Encoding::EUC_JP
+  fails "Predefined global $& sets the encoding to the encoding of the source String" # NameError: uninitialized constant Encoding::EUC_JP
+  fails "Predefined global $' sets an empty result to the encoding of the source String" # NameError: uninitialized constant Encoding::ISO_8859_1
+  fails "Predefined global $' sets the encoding to the encoding of the source String" # NameError: uninitialized constant Encoding::EUC_JP
+  fails "Predefined global $+ sets the encoding to the encoding of the source String" # NameError: uninitialized constant Encoding::EUC_JP
+  fails "Predefined global $` sets an empty result to the encoding of the source String" # NameError: uninitialized constant Encoding::ISO_8859_1
+  fails "Predefined global $` sets the encoding to the encoding of the source String" # NameError: uninitialized constant Encoding::EUC_JP
+  fails "Predefined globals $1..N sets the encoding to the encoding of the source String" # NameError: uninitialized constant Encoding::EUC_JP
+  fails "Regexp#match with [string, position] when given a negative position raises an ArgumentError for an invalid encoding" # NoMethodError: undefined method `pack' for [150]:Array
+  fails "Regexp#match with [string, position] when given a positive position raises an ArgumentError for an invalid encoding" # NoMethodError: undefined method `pack' for [150]:Array
+  fails "Ruby String interpolation raises an Encoding::CompatibilityError if the Encodings are not compatible" # Expected Encoding::CompatibilityError but no exception was raised ("あ ÿ" was returned)
+  fails "Source files encoded in UTF-16 BE with a BOM are invalid because they contain an invalid UTF-8 sequence before the encoding comment" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x7a11e>
+  fails "Source files encoded in UTF-16 BE without a BOM are parsed as empty because they contain a NUL byte before the encoding comment" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x7a11e>
+  fails "Source files encoded in UTF-16 LE with a BOM are invalid because they contain an invalid UTF-8 sequence before the encoding comment" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x7a11e>
+  fails "Source files encoded in UTF-16 LE without a BOM are parsed because empty as they contain a NUL byte before the encoding comment" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x7a11e>
+  fails "Source files encoded in UTF-8 with a BOM can be parsed" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x7a11e>
+  fails "Source files encoded in UTF-8 without a BOM can be parsed" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x7a11e>
+  fails "String#% output's encoding negotiates a compatible encoding if necessary" # Expected #<Encoding:UTF-16LE> to equal #<Encoding:ASCII-8BIT (dummy)>
+  fails "String#* raises an ArgumentError if the length of the resulting string doesn't fit into a long" # RangeError: multiply count must not overflow maximum string size
+  fails "String#[]= with String index encodes the String in an encoding compatible with the replacement" # NoMethodError: undefined method `pack' for [160]:Array
+  fails "String#[]= with String index raises an Encoding::CompatibilityError if the replacement encoding is incompatible" # NameError: uninitialized constant Encoding::EUC_JP
+  fails "String#[]= with String index replaces characters with a multibyte character" # NoMethodError: undefined method `[]=' for "ありgaとう":String
+  fails "String#[]= with String index replaces multibyte characters with characters" # NoMethodError: undefined method `[]=' for "ありがとう":String
+  fails "String#[]= with String index replaces multibyte characters with multibyte characters" # NoMethodError: undefined method `[]=' for "ありがとう":String
+  fails "String#[]= with a Range index deletes a multibyte character" # NoMethodError: undefined method `[]=' for "ありとう":String
+  fails "String#[]= with a Range index encodes the String in an encoding compatible with the replacement" # NoMethodError: undefined method `pack' for [160]:Array
+  fails "String#[]= with a Range index inserts a multibyte character" # NoMethodError: undefined method `[]=' for "ありとう":String
+  fails "String#[]= with a Range index raises an Encoding::CompatibilityError if the replacement encoding is incompatible" # NameError: uninitialized constant Encoding::EUC_JP
+  fails "String#[]= with a Range index replaces characters with a multibyte character" # NoMethodError: undefined method `[]=' for "ありgaとう":String
+  fails "String#[]= with a Range index replaces multibyte characters by negative indexes" # NoMethodError: undefined method `[]=' for "ありがとう":String
+  fails "String#[]= with a Range index replaces multibyte characters with characters" # NoMethodError: undefined method `[]=' for "ありがとう":String
+  fails "String#[]= with a Range index replaces multibyte characters with multibyte characters" # NoMethodError: undefined method `[]=' for "ありがとう":String
+  fails "String#[]= with a Regexp index encodes the String in an encoding compatible with the replacement" # NoMethodError: undefined method `pack' for [160]:Array
+  fails "String#[]= with a Regexp index raises an Encoding::CompatibilityError if the replacement encoding is incompatible" # NameError: uninitialized constant Encoding::EUC_JP
+  fails "String#[]= with a Regexp index replaces characters with a multibyte character" # NoMethodError: undefined method `[]=' for "ありgaとう":String
+  fails "String#[]= with a Regexp index replaces multibyte characters with characters" # NoMethodError: undefined method `[]=' for "ありがとう":String
+  fails "String#[]= with a Regexp index replaces multibyte characters with multibyte characters" # NoMethodError: undefined method `[]=' for "ありがとう":String
+  fails "String#ascii_only? returns false after appending non ASCII characters to an empty String" # NotImplementedError: String#<< not supported. Mutable String methods are not supported in Opal.
+  fails "String#ascii_only? returns false when concatenating an ASCII and non-ASCII String" # NoMethodError: undefined method `concat' for "":String
+  fails "String#ascii_only? returns false when replacing an ASCII String with a non-ASCII String" # NoMethodError: undefined method `replace' for "":String
+  fails "String#b returns new string without modifying self" # NoMethodError: undefined method `b' for "こんちには":String
+  fails "String#byteslice on on non ASCII strings returns byteslice of unicode strings" # Expected nil to equal "\u0081"
+  fails "String#center with length, padding with width returns a String in the same encoding as the original" # NameError: uninitialized constant Encoding::IBM437
+  fails "String#center with length, padding with width, pattern raises an Encoding::CompatibilityError if the encodings are incompatible" # NameError: uninitialized constant Encoding::EUC_JP
+  fails "String#center with length, padding with width, pattern returns a String in the compatible encoding" # NameError: uninitialized constant Encoding::IBM437
+  fails "String#chars returns a different character if the String is transcoded" # ArgumentError: unknown encoding name - iso-8859-15
+  fails "String#chars returns characters in the same encoding as self" # ArgumentError: unknown encoding name - Shift_JIS
+  fails "String#chars uses the String's encoding to determine what characters it contains" # Expected ["�", "�"] to equal ["𤭢"]
+  fails "String#chars works if the String's contents is invalid for its encoding" # NoMethodError: undefined method `pack' for [164]:Array
+  fails "String#chr returns a String in the same encoding as self" # Expected #<Encoding:UTF-16LE> to equal #<Encoding:ASCII-8BIT (dummy)>
+  fails "String#chr returns a copy of self" # Expected "e" not to equal "e"
+  fails "String#codepoints raises an ArgumentError if self's encoding is invalid and a block is given" # Expected true to be false
+  fails "String#codepoints raises an ArgumentError when no block is given if self has an invalid encoding" # Expected true to be false
+  fails "String#codepoints raises an ArgumentError when self has an invalid encoding and a method is called on the returned Enumerator" # Expected true to be false
+  fails "String#codepoints round-trips to the original String using Integer#chr" # Expected "\u0013眑တ" to equal ""
+  fails "String#each_char returns a different character if the String is transcoded" # ArgumentError: unknown encoding name - iso-8859-15
+  fails "String#each_char returns characters in the same encoding as self" # ArgumentError: unknown encoding name - Shift_JIS
+  fails "String#each_char uses the String's encoding to determine what characters it contains" # Expected ["�", "�"] to equal ["𤭢"]
+  fails "String#each_char works if the String's contents is invalid for its encoding" # NoMethodError: undefined method `pack' for [164]:Array
+  fails "String#each_codepoint raises an ArgumentError if self's encoding is invalid and a block is given" # Expected true to be false
+  fails "String#each_codepoint raises an ArgumentError when self has an invalid encoding and a method is called on the returned Enumerator" # Expected true to be false
+  fails "String#each_codepoint round-trips to the original String using Integer#chr" # NotImplementedError: String#<< not supported. Mutable String methods are not supported in Opal.
+  fails "String#each_codepoint when no block is given returned Enumerator size should return the size of the string even when the string has an invalid encoding" # Expected true to be false
+  fails "String#each_codepoint when no block is given returned Enumerator size should return the size of the string" # NoMethodError: undefined method `each_codepoint' for "hello":String
+  fails "String#each_codepoint when no block is given returns an Enumerator even when self has an invalid encoding" # Expected true to be false
+  fails "String#encode given the xml: :attr option replaces all instances of '&' with '&amp;'" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode given the xml: :attr option replaces all instances of '<' with '&lt;'" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode given the xml: :attr option replaces all instances of '>' with '&gt;'" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode given the xml: :attr option replaces all instances of '\"' with '&quot;'" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode given the xml: :attr option replaces undefined characters with their upper-case hexadecimal numeric character references" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode given the xml: :attr option surrounds the encoded text with double-quotes" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode given the xml: :text option does not replace '\"'" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode given the xml: :text option replaces all instances of '&' with '&amp;'" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode given the xml: :text option replaces all instances of '<' with '&lt;'" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode given the xml: :text option replaces all instances of '>' with '&gt;'" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode given the xml: :text option replaces undefined characters with their upper-case hexadecimal numeric character references" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode raises ArgumentError if the value of the :xml option is not :text or :attr" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed no options encodes an ascii substring of a binary string to UTF-8" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed no options raises an Encoding::ConverterNotFoundError when no conversion is possible" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed no options returns a copy for a ASCII-only String when Encoding.default_internal is nil" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed no options returns a copy when Encoding.default_internal is nil" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed no options transcodes a 7-bit String despite no generic converting being available" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed no options transcodes to Encoding.default_internal when set" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed options calls #to_hash to convert the object" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed options does not process transcoding options if not transcoding" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed options normalizes newlines" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed options raises an Encoding::ConverterNotFoundError when no conversion is possible despite 'invalid: :replace, undef: :replace'" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed options replaces invalid characters when replacing Emacs-Mule encoded strings" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed options replaces invalid encoding in source using a specified replacement even when a fallback is given" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed options replaces invalid encoding in source using replace even when fallback is given as proc" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed options replaces invalid encoding in source with a specified replacement" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed options replaces invalid encoding in source with default replacement" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed options replaces undefined encoding in destination using a fallback proc" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed options replaces undefined encoding in destination with a specified replacement even if a fallback is given" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed options replaces undefined encoding in destination with a specified replacement" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed options replaces undefined encoding in destination with default replacement" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed options returns a copy when Encoding.default_internal is nil" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed options transcodes to Encoding.default_internal when set" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed to encoding accepts a String argument" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed to encoding calls #to_str to convert the object to an Encoding" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed to encoding raises an Encoding::ConverterNotFoundError for an invalid encoding" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed to encoding raises an Encoding::ConverterNotFoundError when no conversion is possible" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed to encoding returns a copy when passed the same encoding as the String" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed to encoding round trips a String" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed to encoding transcodes Japanese multibyte characters" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed to encoding transcodes a 7-bit String despite no generic converting being available" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed to encoding transcodes to the passed encoding" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed to, from calls #to_str to convert the from object to an Encoding" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed to, from returns a copy in the destination encoding when both encodings are the same" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed to, from returns the transcoded string" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed to, from transcodes between the encodings ignoring the String encoding" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed to, from, options calls #to_hash to convert the options object" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed to, from, options calls #to_str to convert the from object to an encoding" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed to, from, options calls #to_str to convert the to object to an encoding" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed to, from, options replaces invalid characters in the destination encoding" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed to, from, options replaces undefined characters in the destination encoding" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed to, from, options returns a copy when both encodings are the same" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed to, options calls #to_hash to convert the options object" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed to, options replaces invalid characters in the destination encoding" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed to, options replaces undefined characters in the destination encoding" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode when passed to, options returns a copy when the destination encoding is the same as the String encoding" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encoding for Strings with \\u escapes is not affected by both the default internal and external encoding being set at the same time" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encoding for Strings with \\u escapes is not affected by the default external encoding" # NameError: uninitialized constant Encoding::SHIFT_JIS
+  fails "String#encoding for Strings with \\u escapes is not affected by the default internal encoding" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encoding for Strings with \\u escapes returns US-ASCII if self is US-ASCII only" # Expected false to be true
+  fails "String#encoding for Strings with \\u escapes returns the given encoding if #encode!has been called" # NameError: uninitialized constant Encoding::SHIFT_JIS
+  fails "String#encoding for Strings with \\u escapes returns the given encoding if #force_encoding has been called" # NameError: uninitialized constant Encoding::SHIFT_JIS
+  fails "String#encoding for Strings with \\x escapes is not affected by both the default internal and external encoding being set at the same time" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encoding for Strings with \\x escapes is not affected by the default external encoding" # NameError: uninitialized constant Encoding::SHIFT_JIS
+  fails "String#encoding for Strings with \\x escapes is not affected by the default internal encoding" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encoding for Strings with \\x escapes returns US-ASCII if self is US-ASCII only" # Expected false to be true
+  fails "String#encoding for Strings with \\x escapes returns the given encoding if #encode!has been called" # NameError: uninitialized constant Encoding::SHIFT_JIS
+  fails "String#encoding for Strings with \\x escapes returns the given encoding if #force_encoding has been called" # NameError: uninitialized constant Encoding::SHIFT_JIS
+  fails "String#encoding for Strings with \\x escapes returns the source encoding when an escape creates a byte with the 8th bit set if the source encoding isn't US-ASCII" # NameError: uninitialized constant Encoding::ISO8859_9
+  fails "String#encoding for US-ASCII Strings returns US-ASCII if self is US-ASCII only, despite the default encodings being different" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encoding for US-ASCII Strings returns US-ASCII if self is US-ASCII only, despite the default external encoding being different" # Expected #<Encoding:UTF-16LE> to equal #<Encoding:ASCII-8BIT (dummy)>
+  fails "String#encoding for US-ASCII Strings returns US-ASCII if self is US-ASCII only, despite the default internal and external encodings being different" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encoding for US-ASCII Strings returns US-ASCII if self is US-ASCII only, despite the default internal encoding being different" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encoding for US-ASCII Strings returns US-ASCII if self is US-ASCII" # Expected #<Encoding:UTF-16LE> to equal #<Encoding:ASCII-8BIT (dummy)>
+  fails "String#encoding returns the given encoding if #encode!has been called" # NameError: uninitialized constant Encoding::SHIFT_JIS
+  fails "String#encoding returns the given encoding if #force_encoding has been called" # NameError: uninitialized constant Encoding::SHIFT_JIS
+  fails "String#force_encoding accepts a String as the name of an Encoding" # ArgumentError: unknown encoding name - shift_jis
+  fails "String#force_encoding accepts an Encoding instance" # NameError: uninitialized constant Encoding::SHIFT_JIS
+  fails "String#force_encoding calls #to_str to convert an object to an encoding name" # ArgumentError: unknown encoding name - #<MockObject:0xa7ea>
+  fails "String#force_encoding does not transcode self" # Expected "蘒" not to equal "蘒"
+  fails "String#force_encoding raises a TypeError if #to_str does not return a String" # ArgumentError: unknown encoding name - #<MockObject:0xa7d8>
+  fails "String#force_encoding raises a TypeError if passed nil" # ArgumentError: unknown encoding name -
+  fails "String#force_encoding sets the encoding even if the String contents are invalid in that encoding" # ArgumentError: unknown encoding name - euc-jp
+  fails "String#index with Regexp raises an Encoding::CompatibilityError if the encodings are incompatible" # NameError: uninitialized constant Encoding::EUC_JP
+  fails "String#index with String raises an Encoding::CompatibilityError if the encodings are incompatible" # NameError: uninitialized constant Encoding::EUC_JP
+  fails "String#insert with index, other inserts a character into a multibyte encoded string" # NoMethodError: undefined method `insert' for "ありがとう":String
+  fails "String#insert with index, other raises an Encoding::CompatibilityError if the encodings are incompatible" # NameError: uninitialized constant Encoding::EUC_JP
+  fails "String#insert with index, other returns a String in the compatible encoding" # NoMethodError: undefined method `insert' for "":String
+  fails "String#length returns the length of a string in different encodings" # NameError: uninitialized constant Encoding::UTF_32BE
+  fails "String#length returns the length of the new self after encoding is changed" # Expected 4 to equal 12
+  fails "String#ljust with length, padding with width returns a String in the same encoding as the original" # NameError: uninitialized constant Encoding::IBM437
+  fails "String#ljust with length, padding with width, pattern raises an Encoding::CompatibilityError if the encodings are incompatible" # NameError: uninitialized constant Encoding::EUC_JP
+  fails "String#ljust with length, padding with width, pattern returns a String in the compatible encoding" # NameError: uninitialized constant Encoding::IBM437
+  fails "String#ord raises an ArgumentError if called on an empty String" # Expected ArgumentError but no exception was raised (NaN was returned)
+  fails "String#rindex with Regexp raises an Encoding::CompatibilityError if the encodings are incompatible" # NameError: uninitialized constant Encoding::EUC_JP
+  fails "String#rjust with length, padding with width returns a String in the same encoding as the original" # NameError: uninitialized constant Encoding::IBM437
+  fails "String#rjust with length, padding with width, pattern raises an Encoding::CompatibilityError if the encodings are incompatible" # NameError: uninitialized constant Encoding::EUC_JP
+  fails "String#rjust with length, padding with width, pattern returns a String in the compatible encoding" # NameError: uninitialized constant Encoding::IBM437
+  fails "String#size returns the length of a string in different encodings" # NameError: uninitialized constant Encoding::UTF_32BE
+  fails "String#size returns the length of the new self after encoding is changed" # Expected 4 to equal 12
+  fails "String#split with String throws an ArgumentError if the pattern is not a valid string" # NotImplementedError: String#chop! not supported. Mutable String methods are not supported in Opal.
+  fails "String#valid_encoding? returns false if a valid String had an invalid character appended to it" # NoMethodError: undefined method `pack' for [221]:Array
+  fails "String#valid_encoding? returns false if self contains a character invalid in the associated encoding" # NoMethodError: undefined method `pack' for [128]:Array
+  fails "String#valid_encoding? returns false if self is valid in one encoding, but invalid in the one it's tagged with" # Expected true to be false
+  fails "String#valid_encoding? returns true for all encodings self is valid in" # Expected true to be false
+  fails "String#valid_encoding? returns true if an invalid string is appended another invalid one but both make a valid string" # NoMethodError: undefined method `pack' for [208]:Array
+  fails "The predefined global constant ARGV contains Strings encoded in locale Encoding" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "The predefined global constant STDERR has nil for the external encoding despite Encoding.default_external being changed" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "The predefined global constant STDERR has nil for the external encoding" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "The predefined global constant STDERR has nil for the internal encoding despite Encoding.default_internal being changed" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "The predefined global constant STDERR has nil for the internal encoding" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "The predefined global constant STDERR has the encodings set by #set_encoding" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "The predefined global constant STDIN has nil for the internal encoding despite Encoding.default_internal being changed" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "The predefined global constant STDIN has nil for the internal encoding" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "The predefined global constant STDIN has the encodings set by #set_encoding" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "The predefined global constant STDIN has the same external encoding as Encoding.default_external when that encoding is changed" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "The predefined global constant STDIN has the same external encoding as Encoding.default_external" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "The predefined global constant STDIN retains the encoding set by #set_encoding when Encoding.default_external is changed" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "The predefined global constant STDOUT has nil for the external encoding despite Encoding.default_external being changed" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "The predefined global constant STDOUT has nil for the external encoding" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "The predefined global constant STDOUT has nil for the internal encoding despite Encoding.default_internal being changed" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "The predefined global constant STDOUT has nil for the internal encoding" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "The predefined global constant STDOUT has the encodings set by #set_encoding" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "Time#inspect returns a US-ASCII encoded string" # Expected #<Encoding:UTF-16LE> to be identical to #<Encoding:ASCII-8BIT (dummy)>
+  fails "Time#to_s returns a US-ASCII encoded string" # Expected #<Encoding:UTF-16LE> to be identical to #<Encoding:ASCII-8BIT (dummy)>
+end
diff --git a/spec/filters/bugs/enumerable.rb b/spec/filters/bugs/enumerable.rb
new file mode 100644
index 00000000..9c56ae26
--- /dev/null
+++ b/spec/filters/bugs/enumerable.rb
@@ -0,0 +1,29 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "Enumerable" do
+  fails "Enumerable#chain returns a chain of self and provided enumerables" # NoMethodError: undefined method `chain' for #<EnumerableSpecs::Numerous:0x8c490>
+  fails "Enumerable#chain returns an Enumerator::Chain if given a block" # NoMethodError: undefined method `chain' for #<EnumerableSpecs::Numerous:0x6b0b4>
+  fails "Enumerable#chunk_while on a single-element array ignores the block and returns an enumerator that yields [element]" # Expected [] to equal [[1]]
+  fails "Enumerable#collect reports the same arity as the given block" # Exception: Cannot read property '$$is_array' of undefined
+  fails "Enumerable#collect yields 2 arguments for a Hash when block arity is 2" # ArgumentError: [#register] wrong number of arguments(1 for 2)
+  fails "Enumerable#first returns a gathered array from yield parameters"
+  fails "Enumerable#grep correctly handles non-string elements" # Expected nil == "match" to be truthy but was false
+  fails "Enumerable#grep does not modify Regexp.last_match without block" # NoMethodError: undefined method `[]' for nil
+  fails "Enumerable#grep does not set $~ when given no block" # Expected nil == "z" to be truthy but was false
+  fails "Enumerable#grep_v correctly handles non-string elements" # Expected nil == "match" to be truthy but was false
+  fails "Enumerable#grep_v does not modify Regexp.last_match without block" # Expected "e" == "z" to be truthy but was false
+  fails "Enumerable#grep_v does not set $~ when given no block" # Expected "e" == "z" to be truthy but was false
+  fails "Enumerable#map reports the same arity as the given block" # Exception: Cannot read property '$$is_array' of undefined
+  fails "Enumerable#map yields 2 arguments for a Hash when block arity is 2" # ArgumentError: [#register] wrong number of arguments(1 for 2)
+  fails "Enumerable#reverse_each gathers whole arrays as elements when each yields multiple"
+  fails "Enumerable#slice_when when an iterator method yields more than one value processes all yielded values"
+  fails "Enumerable#slice_when when given a block doesn't yield an empty array on a small enumerable" # Expected [] to equal [[42]]
+  fails "Enumerable#sort_by calls #each to iterate over the elements to be sorted" # Mock '#<EnumerableSpecs::Numerous:0x64116>' expected to receive each("any_args") exactly 1 times but received it 0 times
+  fails "Enumerable#sort_by returns an array of elements when a block is supplied and #map returns an enumerable"
+  fails "Enumerable#take_while calls the block with initial args when yielded with multiple arguments"
+  fails "Enumerable#tally counts values as gathered array when yielded with multiple arguments" # NoMethodError: undefined method `tally' for #<EnumerableSpecs::YieldsMixed2:0x8e6b4>
+  fails "Enumerable#to_h with block does not coerce returned pair to Array with #to_a" # Expected TypeError (/wrong element type MockObject/) but got: TypeError (wrong element type NilClass (expected array))
+  fails "Enumerable#to_h with block raises ArgumentError if block returns longer or shorter array" # Expected ArgumentError (/element has wrong array length/) but got: TypeError (wrong element type NilClass (expected array))
+  fails "Enumerable#to_h with block raises TypeError if block returns something other than Array" # Expected TypeError (/wrong element type String/) but got: TypeError (wrong element type NilClass (expected array))
+  fails "Enumerable#uniq uses eql? semantics" # Depends on the difference between Integer and Float
+  fails "Enumerable#zip passes each element of the result array to a block and return nil if a block is given"
+end
diff --git a/spec/filters/bugs/enumerator.rb b/spec/filters/bugs/enumerator.rb
new file mode 100644
index 00000000..3508f04d
--- /dev/null
+++ b/spec/filters/bugs/enumerator.rb
@@ -0,0 +1,152 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "Enumerator" do
+  fails "Enumerator#feed can be called for each iteration"
+  fails "Enumerator#feed causes yield to return the value if called during iteration"
+  fails "Enumerator#feed raises a TypeError if called more than once without advancing the enumerator"
+  fails "Enumerator#feed returns nil"
+  fails "Enumerator#feed sets the future return value of yield if called before advancing the iterator"
+  fails "Enumerator#feed sets the return value of Yielder#yield"
+  fails "Enumerator#initialize returns self when given a block"
+  fails "Enumerator#initialize sets size to nil if size is not given"
+  fails "Enumerator#initialize sets size to nil if the given size is nil"
+  fails "Enumerator#initialize sets size to the given size if the given size is Float::INFINITY"
+  fails "Enumerator#initialize sets size to the given size if the given size is a Proc"
+  fails "Enumerator#initialize sets size to the given size if the given size is an Integer" # Expected 4 == 100 to be truthy but was false
+  fails "Enumerator.new no block given raises" # Expected ArgumentError but no exception was raised (#<Enumerator: 1:upto(3)> was returned)
+  fails "Enumerator.new when passed a block yielded values handles yield arguments properly" # Expected 1 == [1, 2] to be truthy but was false
+  fails "Enumerator.produce creates an infinite enumerator" # NoMethodError: undefined method `produce' for Enumerator
+  fails "Enumerator.produce terminates iteration when block raises StopIteration exception" # NoMethodError: undefined method `produce' for Enumerator
+  fails "Enumerator.produce when initial value skipped starts enumerable from result of first block call" # NoMethodError: undefined method `produce' for Enumerator
+  fails "Enumerator.produce when initial value skipped uses nil instead" # NoMethodError: undefined method `produce' for Enumerator
+  fails "Enumerator::ArithmeticSequence#hash is based on begin, end, step and exclude_end?" # Expected "A,3,21,3,0" (String) to be an instance of Integer
+  fails "Enumerator::ArithmeticSequence.allocate is not defined" # Expected TypeError (allocator undefined for Enumerator::ArithmeticSequence) but no exception was raised (#<Enumerator::ArithmeticSequence>(#pretty_inspect raised #<NoMethodError: undefined method `begin' for nil>) was returned)
+  fails "Enumerator::ArithmeticSequence.new is not defined" # Expected NoMethodError but got: ArgumentError ([ArithmeticSequence#initialize] wrong number of arguments (given 0, expected -2))  
+  fails "Enumerator::Generator#each returns the block returned value" # Expected #<Enumerator::Generator:0x74c7e> to be identical to "block_returned"
+  fails "Enumerator::Generator#initialize returns self when given a block" # Expected #<Proc:0x1b2ee> to be identical to #<Enumerator::Generator:0x1b2e2>
+  fails "Enumerator::Lazy defines lazy versions of a whitelist of Enumerator methods" # Expected ["initialize",  "force",  "lazy",  "collect",  "collect_concat",  "drop",  "drop_while",  "enum_for",  "filter",  "find_all",  "flat_map",  "grep",  "map",  "select",  "reject",  "take",  "take_while",  "to_enum",  "inspect"] to include "chunk"
+  fails "Enumerator::Lazy#chunk calls the block with gathered values when yield with multiple arguments" # NoMethodError: undefined method `force' for #<Enumerator: #<Enumerator::Generator:0x5dcd4>:each>
+  fails "Enumerator::Lazy#chunk on a nested Lazy when the returned lazy enumerator is evaluated by Enumerable#first stops after specified times" # Expected 0 == 2 to be truthy but was false
+  fails "Enumerator::Lazy#chunk returns a new instance of Enumerator::Lazy" # Expected #<Enumerator: #<Enumerator::Generator:0x5dcbc>:each> (Enumerator) to be an instance of Enumerator::Lazy
+  fails "Enumerator::Lazy#chunk returns an Enumerator if called without a block" # NoMethodError: undefined method `force' for #<Enumerator: #<Enumerator::Generator:0x5dc8a>:each>
+  fails "Enumerator::Lazy#chunk when the returned lazy enumerator is evaluated by Enumerable#first stops after specified times" # Exception: Object.defineProperty called on non-object
+  fails "Enumerator::Lazy#chunk works with an infinite enumerable" # TypeError: can't iterate from Float
+  fails "Enumerator::Lazy#chunk_while should return a lazy enumerator" # Expected #<Enumerator: #<Enumerator::Generator:0x5174c>:each> (Enumerator) to be kind of Enumerator::Lazy
+  fails "Enumerator::Lazy#chunk_while works with an infinite enumerable" # TypeError: can't iterate from Float
+  fails "Enumerator::Lazy#collect on a nested Lazy when the returned lazy enumerator is evaluated by Enumerable#first stops after specified times" # Expected [] == [2, 3, 4] to be truthy but was false
+  fails "Enumerator::Lazy#collect when the returned lazy enumerator is evaluated by Enumerable#first stops after specified times" # Expected [] == [1, 2, 3] to be truthy but was false
+  fails "Enumerator::Lazy#collect works with an infinite enumerable" # TypeError: can't iterate from Float
+  fails "Enumerator::Lazy#collect_concat on a nested Lazy when the returned lazy enumerator is evaluated by Enumerable#first flattens elements when the given block returned an array or responding to .each and .force" # Expected [] == ["0", "1", "0", "2", "0", "3"] to be truthy but was false
+  fails "Enumerator::Lazy#collect_concat on a nested Lazy when the returned lazy enumerator is evaluated by Enumerable#first stops after specified times" # Expected [] == ["0", "10", "20", "30", "40", "50"] to be truthy but was false
+  fails "Enumerator::Lazy#collect_concat when the returned lazy enumerator is evaluated by Enumerable#first flattens elements when the given block returned an array or responding to .each and .force" # Expected [] == ["0", "1", "0", "2", "0", "3"] to be truthy but was false
+  fails "Enumerator::Lazy#collect_concat when the returned lazy enumerator is evaluated by Enumerable#first stops after specified times" # Expected [] == ["0", "10", "20", "30", "40", "50"] to be truthy but was false
+  fails "Enumerator::Lazy#collect_concat works with an infinite enumerable" # TypeError: can't iterate from Float
+  fails "Enumerator::Lazy#drop on a nested Lazy sets difference of given count with old size to new size" # Expected 20 == 30 to be truthy but was false
+  fails "Enumerator::Lazy#drop on a nested Lazy when the returned lazy enumerator is evaluated by Enumerable#first stops after specified times" # Expected [] == [4, 5] to be truthy but was false
+  fails "Enumerator::Lazy#drop sets difference of given count with old size to new size" # Expected 20 == 80 to be truthy but was false
+  fails "Enumerator::Lazy#drop when the returned lazy enumerator is evaluated by Enumerable#first stops after specified times" # Expected [] == [2, 3] to be truthy but was false
+  fails "Enumerator::Lazy#drop works with an infinite enumerable" # TypeError: can't iterate from Float
+  fails "Enumerator::Lazy#drop_while on a nested Lazy when the returned lazy enumerator is evaluated by Enumerable#first stops after specified times" # Expected [] == [6, 7] to be truthy but was false
+  fails "Enumerator::Lazy#drop_while when the returned lazy enumerator is evaluated by Enumerable#first stops after specified times" # Expected [] == [5, 6] to be truthy but was false
+  fails "Enumerator::Lazy#drop_while works with an infinite enumerable" # TypeError: can't iterate from Float
+  fails "Enumerator::Lazy#eager does not enumerate an enumerator" # NoMethodError: undefined method `eager' for #<Enumerator::Lazy: [1, 2, 3]>
+  fails "Enumerator::Lazy#eager returns a non-lazy Enumerator converted from the lazy enumerator" # NoMethodError: undefined method `eager' for #<Enumerator::Lazy: [1, 2, 3]>
+  fails "Enumerator::Lazy#enum_for generates a lazy enumerator from the given name" # Expected [] == [[0, 10], [1, 11], [2, 12]] to be truthy but was false
+  fails "Enumerator::Lazy#enum_for passes given arguments to wrapped method" # Expected [] == [0, 6, 20, 42] to be truthy but was false
+  fails "Enumerator::Lazy#enum_for works with an infinite enumerable" # TypeError: can't iterate from Float
+  fails "Enumerator::Lazy#filter calls the block with a gathered array when yield with multiple arguments" # NoMethodError: undefined method `force' for [[], 0, [0, 1], [0, 1, 2], [0, 1, 2], nil, "default_arg", [], [], [0], [0, 1], [0, 1, 2]]
+  fails "Enumerator::Lazy#filter on a nested Lazy when the returned lazy enumerator is evaluated by Enumerable#first stops after specified times" # Expected [] == [6, 8, 10] to be truthy but was false
+  fails "Enumerator::Lazy#filter when the returned lazy enumerator is evaluated by Enumerable#first stops after specified times" # Expected [] == [0, 2, 4] to be truthy but was false
+  fails "Enumerator::Lazy#filter works with an infinite enumerable" # TypeError: can't iterate from Float
+  fails "Enumerator::Lazy#filter_map does not map false results" # Expected [] == [1, 3, 5, 7] to be truthy but was false
+  fails "Enumerator::Lazy#filter_map maps only truthy results" # Expected [] == [1, 3, 5, 7] to be truthy but was false
+  fails "Enumerator::Lazy#find_all calls the block with a gathered array when yield with multiple arguments" # Expected [nil, 0, 0, 0, 0, nil, "default_arg", [], [], [0], [0, 1], [0, 1, 2]] == [nil,  0,  [0, 1],  [0, 1, 2],  [0, 1, 2],  nil,  "default_arg",  [],  [],  [0],  [0, 1],  [0, 1, 2]] to be truthy but was false
+  fails "Enumerator::Lazy#find_all on a nested Lazy when the returned lazy enumerator is evaluated by Enumerable#first stops after specified times" # Expected [] == [6, 8, 10] to be truthy but was false
+  fails "Enumerator::Lazy#find_all when the returned lazy enumerator is evaluated by Enumerable#first stops after specified times" # Expected [] == [0, 2, 4] to be truthy but was false
+  fails "Enumerator::Lazy#find_all works with an infinite enumerable" # TypeError: can't iterate from Float
+  fails "Enumerator::Lazy#flat_map on a nested Lazy when the returned lazy enumerator is evaluated by Enumerable#first flattens elements when the given block returned an array or responding to .each and .force" # Expected [] == ["0", "1", "0", "2", "0", "3"] to be truthy but was false
+  fails "Enumerator::Lazy#flat_map on a nested Lazy when the returned lazy enumerator is evaluated by Enumerable#first stops after specified times" # Expected [] == ["0", "10", "20", "30", "40", "50"] to be truthy but was false
+  fails "Enumerator::Lazy#flat_map when the returned lazy enumerator is evaluated by Enumerable#first flattens elements when the given block returned an array or responding to .each and .force" # Expected [] == ["0", "1", "0", "2", "0", "3"] to be truthy but was false
+  fails "Enumerator::Lazy#flat_map when the returned lazy enumerator is evaluated by Enumerable#first stops after specified times" # Expected [] == ["0", "10", "20", "30", "40", "50"] to be truthy but was false
+  fails "Enumerator::Lazy#flat_map works with an infinite enumerable" # TypeError: can't iterate from Float
+  fails "Enumerator::Lazy#force on a nested Lazy calls all block and returns an Array" # Expected [] == [1, 2] to be truthy but was false
+  fails "Enumerator::Lazy#force passes given arguments to receiver.each" # Expected [[],  0,  [0, 1],  [0, 1, 2],  [0, 1, 2],  nil,  "arg1",  ["arg2", "arg3"],  [],  [0],  [0, 1],  [0, 1, 2]] == [nil,  0,  [0, 1],  [0, 1, 2],  [0, 1, 2],  nil,  "arg1",  ["arg2", "arg3"],  [],  [0],  [0, 1],  [0, 1, 2]] to be truthy but was false
+  fails "Enumerator::Lazy#force works with an infinite enumerable" # TypeError: can't iterate from Float
+  fails "Enumerator::Lazy#grep calls the block with a gathered array when yield with multiple arguments" # Expected [[],  [],  0,  0,  [0, 1],  [...],  [0, 1, 2],  [...],  [0, 1, 2],  [...],  nil,  nil,  "default_arg",  "default_arg",  [],  [],  [],  [],  [0],  [...],  [0, 1],  [...],  [0, 1, 2],  [...]] == [nil,  0,  [0, 1],  [0, 1, 2],  [0, 1, 2],  nil,  "default_arg",  [],  [],  [0],  [0, 1],  [0, 1, 2]] to be truthy but was false
+  fails "Enumerator::Lazy#grep on a nested Lazy when the returned lazy enumerator is evaluated by Enumerable#first stops after specified times when given a block" # Exception: Object.defineProperty called on non-object
+  fails "Enumerator::Lazy#grep on a nested Lazy when the returned lazy enumerator is evaluated by Enumerable#first stops after specified times when not given a block" # Expected [] == [0, 1, 2] to be truthy but was false
+  fails "Enumerator::Lazy#grep when the returned lazy enumerator is evaluated by Enumerable#first stops after specified times when given a block" # Expected [] == [1, 2, 3] to be truthy but was false
+  fails "Enumerator::Lazy#grep when the returned lazy enumerator is evaluated by Enumerable#first stops after specified times when not given a block" # Expected [] == [0, 1, 2] to be truthy but was false
+  fails "Enumerator::Lazy#grep works with an infinite enumerable" # TypeError: can't iterate from Float
+  fails "Enumerator::Lazy#grep_v calls the block with a gathered array when yield with multiple arguments" # NoMethodError: undefined method `force' for [[nil, 0, nil, "default_arg"], [nil, 0, nil, "default_arg"], [nil, 0, nil, "default_arg"], [nil, 0, nil, "default_arg"]]
+  fails "Enumerator::Lazy#grep_v on a nested Lazy sets #size to nil" # Expected 0 == nil to be truthy but was false
+  fails "Enumerator::Lazy#grep_v on a nested Lazy when the returned lazy enumerator is evaluated by Enumerable#first stops after specified times when given a block" # Exception: Object.defineProperty called on non-object
+  fails "Enumerator::Lazy#grep_v on a nested Lazy when the returned lazy enumerator is evaluated by Enumerable#first stops after specified times when not given a block" # Expected [] == [0, 1, 2] to be truthy but was false
+  fails "Enumerator::Lazy#grep_v returns a new instance of Enumerator::Lazy" # Expected [] (Array) to be an instance of Enumerator::Lazy
+  fails "Enumerator::Lazy#grep_v sets #size to nil" # Expected 0 == nil to be truthy but was false
+  fails "Enumerator::Lazy#grep_v sets $~ in the block" # NoMethodError: undefined method `force' for [nil]
+  fails "Enumerator::Lazy#grep_v sets $~ in the next block with each" # Expected #<MatchData>(#pretty_inspect raised #<NoMethodError: undefined method `named_captures' for /e/>) == nil to be truthy but was false
+  fails "Enumerator::Lazy#grep_v sets $~ in the next block with map" # Expected #<MatchData>(#pretty_inspect raised #<NoMethodError: undefined method `named_captures' for /e/>) == nil to be truthy but was false
+  fails "Enumerator::Lazy#grep_v when the returned lazy enumerator is evaluated by Enumerable#first stops after specified times when given a block" # Expected [] == [1, 2, 3] to be truthy but was false
+  fails "Enumerator::Lazy#grep_v when the returned lazy enumerator is evaluated by Enumerable#first stops after specified times when not given a block" # Expected [] == [0, 1, 2] to be truthy but was false
+  fails "Enumerator::Lazy#grep_v works with an infinite enumerable" # TypeError: can't iterate from Float
+  fails "Enumerator::Lazy#initialize returns self" # Expected nil to be identical to #<Enumerator::Lazy: #<Object:0x4d524>>
+  fails "Enumerator::Lazy#initialize sets #size to nil if given size is nil" # NoMethodError: undefined method `size' for nil
+  fails "Enumerator::Lazy#initialize sets #size to nil if not given a size" # NoMethodError: undefined method `size' for nil
+  fails "Enumerator::Lazy#initialize sets given size to own size if the given size is Float::INFINITY" # Expected 4 to be identical to Infinity
+  fails "Enumerator::Lazy#initialize sets given size to own size if the given size is a Proc" # NoMethodError: undefined method `size' for nil
+  fails "Enumerator::Lazy#initialize sets given size to own size if the given size is an Integer" # Expected 4 == 100 to be truthy but was false
+  fails "Enumerator::Lazy#initialize when the returned lazy enumerator is evaluated by Enumerable#first stops after specified times" # NoMethodError: undefined method `first' for nil
+  fails "Enumerator::Lazy#map on a nested Lazy when the returned lazy enumerator is evaluated by Enumerable#first stops after specified times" # Expected [] == [2, 3, 4] to be truthy but was false
+  fails "Enumerator::Lazy#map when the returned lazy enumerator is evaluated by Enumerable#first stops after specified times" # Expected [] == [1, 2, 3] to be truthy but was false
+  fails "Enumerator::Lazy#map works with an infinite enumerable" # TypeError: can't iterate from Float
+  fails "Enumerator::Lazy#reject calls the block with a gathered array when yield with multiple arguments" # Expected [nil, 0, 0, 0, 0, nil, "default_arg", [], [], [0], [0, 1], [0, 1, 2]] == [nil,  0,  [0, 1],  [0, 1, 2],  [0, 1, 2],  nil,  "default_arg",  [],  [],  [0],  [0, 1],  [0, 1, 2]] to be truthy but was false
+  fails "Enumerator::Lazy#reject on a nested Lazy when the returned lazy enumerator is evaluated by Enumerable#first stops after specified times" # Expected [] == [5, 7, 9] to be truthy but was false
+  fails "Enumerator::Lazy#reject when the returned lazy enumerator is evaluated by Enumerable#first stops after specified times" # Expected [] == [1, 3, 5] to be truthy but was false
+  fails "Enumerator::Lazy#reject works with an infinite enumerable" # TypeError: can't iterate from Float
+  fails "Enumerator::Lazy#select calls the block with a gathered array when yield with multiple arguments" # Expected [nil, 0, 0, 0, 0, nil, "default_arg", [], [], [0], [0, 1], [0, 1, 2]] == [nil,  0,  [0, 1],  [0, 1, 2],  [0, 1, 2],  nil,  "default_arg",  [],  [],  [0],  [0, 1],  [0, 1, 2]] to be truthy but was false
+  fails "Enumerator::Lazy#select doesn't over-evaluate when peeked" # NoMethodError: undefined method `peek' for #<Enumerator::Lazy: #<Enumerator::Lazy: ["Text1", "Text2", "Text3"]>>
+  fails "Enumerator::Lazy#select doesn't pre-evaluate the next element" # NoMethodError: undefined method `next' for #<Enumerator::Lazy: #<Enumerator::Lazy: ["Text1", "Text2", "Text3"]>>
+  fails "Enumerator::Lazy#select doesn't re-evaluate after peek" # NoMethodError: undefined method `peek' for #<Enumerator::Lazy: #<Enumerator::Lazy: ["Text1", "Text2", "Text3"]>>
+  fails "Enumerator::Lazy#select on a nested Lazy when the returned lazy enumerator is evaluated by Enumerable#first stops after specified times" # Expected [] == [6, 8, 10] to be truthy but was false
+  fails "Enumerator::Lazy#select when the returned lazy enumerator is evaluated by Enumerable#first stops after specified times" # Expected [] == [0, 2, 4] to be truthy but was false
+  fails "Enumerator::Lazy#select works with an infinite enumerable" # TypeError: can't iterate from Float
+  fails "Enumerator::Lazy#slice_after should return a lazy enumerator" # Expected #<Enumerator: #<Enumerator::Generator:0x53eae>:each> (Enumerator) to be kind of Enumerator::Lazy
+  fails "Enumerator::Lazy#slice_after works with an infinite enumerable" # TypeError: can't iterate from Float
+  fails "Enumerator::Lazy#slice_before should return a lazy enumerator" # Expected #<Enumerator: #<Enumerator::Generator:0x72c3a>:each> (Enumerator) to be kind of Enumerator::Lazy
+  fails "Enumerator::Lazy#slice_before works with an infinite enumerable" # TypeError: can't iterate from Float
+  fails "Enumerator::Lazy#slice_when should return a lazy enumerator" # Expected #<Enumerator: #<Enumerator::Generator:0x50bb6>:each> (Enumerator) to be kind of Enumerator::Lazy
+  fails "Enumerator::Lazy#slice_when works with an infinite enumerable" # TypeError: can't iterate from Float
+  fails "Enumerator::Lazy#take on a nested Lazy when the returned lazy enumerator is evaluated by .force stops after specified times" # Expected [] == [1, 2] to be truthy but was false
+  fails "Enumerator::Lazy#take on a nested Lazy when the returned lazy enumerator is evaluated by .force stops without iterations if the given argument is 0" # Expected ["before_yield"] == [] to be truthy but was false
+  fails "Enumerator::Lazy#take sets given count to size if the old size is Infinity" # Expected Infinity == 20 to be truthy but was false
+  fails "Enumerator::Lazy#take when the returned lazy enumerator is evaluated by .force stops after specified times" # Expected [] == [0, 1] to be truthy but was false
+  fails "Enumerator::Lazy#take when the returned lazy enumerator is evaluated by .force stops without iterations if the given argument is 0" # Expected ["before_yield"] == [] to be truthy but was false
+  fails "Enumerator::Lazy#take_while on a nested Lazy when the returned lazy enumerator is evaluated by .force stops after specified times" # Expected [] == [0] to be truthy but was false
+  fails "Enumerator::Lazy#take_while when the returned lazy enumerator is evaluated by .force stops after specified times" # Expected [] == [0, 1, 2] to be truthy but was false
+  fails "Enumerator::Lazy#to_enum generates a lazy enumerator from the given name" # Expected [] == [[0, 10], [1, 11], [2, 12]] to be truthy but was false
+  fails "Enumerator::Lazy#to_enum passes given arguments to wrapped method" # Expected [] == [0, 6, 20, 42] to be truthy but was false
+  fails "Enumerator::Lazy#to_enum works with an infinite enumerable" # TypeError: can't iterate from Float
+  fails "Enumerator::Lazy#uniq when yielded with an argument return same value after rewind" # NoMethodError: undefined method `force' for [0, 1]
+  fails "Enumerator::Lazy#uniq when yielded with an argument returns a lazy enumerator" # Expected [0, 1] (Array) to be an instance of Enumerator::Lazy
+  fails "Enumerator::Lazy#uniq when yielded with an argument sets the size to nil" # Expected 2 == nil to be truthy but was false
+  fails "Enumerator::Lazy#uniq when yielded with multiple arguments return same value after rewind" # NoMethodError: undefined method `force' for [[0, "foo"], [2, "bar"]]
+  fails "Enumerator::Lazy#uniq when yielded with multiple arguments returns all yield arguments as an array" # NoMethodError: undefined method `force' for [[0, "foo"], [2, "bar"]]
+  fails "Enumerator::Lazy#uniq without block return same value after rewind" # NoMethodError: undefined method `force' for [0, 1]
+  fails "Enumerator::Lazy#uniq without block returns a lazy enumerator" # Expected [0, 1] (Array) to be an instance of Enumerator::Lazy
+  fails "Enumerator::Lazy#uniq without block sets the size to nil" # Expected 2 == nil to be truthy but was false
+  fails "Enumerator::Lazy#uniq works with an infinite enumerable" # TypeError: can't iterate from Float
+  fails "Enumerator::Lazy#with_index enumerates with a given block" # Expected [] == [[0, 0], [2, 1], [4, 2]] to be truthy but was false
+  fails "Enumerator::Lazy#with_index enumerates with an index starting at 0 when offset is nil" # Expected [] == [[0, 0], [1, 1], [2, 2]] to be truthy but was false
+  fails "Enumerator::Lazy#with_index enumerates with an index starting at a given offset" # Expected [] == [[0, 3], [1, 4], [2, 5]] to be truthy but was false
+  fails "Enumerator::Lazy#with_index enumerates with an index" # Expected [] == [[0, 0], [1, 1], [2, 2]] to be truthy but was false
+  fails "Enumerator::Lazy#zip calls the block with a gathered array when yield with multiple arguments" # NoMethodError: undefined method `force' for [[[], []], [0, 0], [[0, 1], [0, 1]], [[0, 1, 2], [0, 1, 2]], [[0, 1, 2], [0, 1, 2]], [nil, nil], ["default_arg", "default_arg"], [[], []], [[], []], [[0], [0]], [[0, 1], [0, 1]], [[0, 1, 2], [0, 1, 2]]]
+  fails "Enumerator::Lazy#zip keeps size" # Expected 0 == 100 to be truthy but was false
+  fails "Enumerator::Lazy#zip on a nested Lazy keeps size" # Expected 0 == 100 to be truthy but was false
+  fails "Enumerator::Lazy#zip on a nested Lazy when the returned lazy enumerator is evaluated by Enumerable#first stops after specified times" # Expected [] == [[1, 4, 8], [2, 5, nil]] to be truthy but was false
+  fails "Enumerator::Lazy#zip raises a TypeError if arguments contain non-list object" # Expected TypeError but got: NoMethodError (undefined method `each' for #<Object:0x5898c>)
+  fails "Enumerator::Lazy#zip returns a Lazy when no arguments given" # Expected [[[]], [0], [[0, 1]], [[0, 1, 2]], [[0, 1, 2]], [nil], ["default_arg"], [[]], [[]], [[0]], [[0, 1]], [[0, 1, 2]]] (Array) to be an instance of Enumerator::Lazy
+  fails "Enumerator::Lazy#zip returns a new instance of Enumerator::Lazy" # Expected [[[], nil], [0, nil], [[0, 1], nil], [[0, 1, 2], nil], [[0, 1, 2], nil], [nil, nil], ["default_arg", nil], [[], nil], [[], nil], [[0], nil], [[0, 1], nil], [[0, 1, 2], nil]] (Array) to be an instance of Enumerator::Lazy
+  fails "Enumerator::Lazy#zip when the returned lazy enumerator is evaluated by Enumerable#first stops after specified times" # Expected [] == [[0, 4, 8], [1, 5, nil]] to be truthy but was false
+  fails "Enumerator::Lazy#zip works with an infinite enumerable and an array" # TypeError: can't iterate from Float
+  fails "Enumerator::Lazy#zip works with two infinite enumerables" # TypeError: can't iterate from Float
+end
diff --git a/spec/filters/bugs/exception.rb b/spec/filters/bugs/exception.rb
new file mode 100644
index 00000000..ed2b2acd
--- /dev/null
+++ b/spec/filters/bugs/exception.rb
@@ -0,0 +1,96 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "Exception" do
+  fails "An Exception reaching the top level is printed on STDERR" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x66584>
+  fails "An Exception reaching the top level the Exception#cause is printed to STDERR with backtraces" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x66584>
+  fails "An Exception reaching the top level with a custom backtrace is printed on STDERR" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x66584>
+  fails "Errno::EAGAIN is the same class as Errno::EWOULDBLOCK if they represent the same errno value" # NameError: uninitialized constant Errno::EAGAIN
+  fails "Errno::EINVAL.new accepts an optional custom message and location" # ArgumentError: [EINVAL.new] wrong number of arguments(2 for -1)
+  fails "Errno::EINVAL.new accepts an optional custom message" # NoMethodError: undefined method `errno' for #<Errno::EINVAL: Invalid argument - custom message>
+  fails "Errno::EINVAL.new can be called with no arguments" # NoMethodError: undefined method `errno' for #<Errno::EINVAL: Invalid argument>
+  fails "Errno::ENOTSUP is defined" # Expected Errno to have constant 'ENOTSUP' but it does not
+  fails "Errno::ENOTSUP is the same class as Errno::EOPNOTSUPP if they represent the same errno value" # NameError: uninitialized constant Errno::ENOTSUP
+  fails "Exception#== returns true if both exceptions have the same class, no message, and no backtrace" # Expected #<RuntimeError: RuntimeError> == #<RuntimeError: RuntimeError> to be truthy but was false
+  fails "Exception#== returns true if both exceptions have the same class, the same message, and no backtrace" # Expected #<TypeError: message> == #<TypeError: message> to be truthy but was false
+  fails "Exception#== returns true if both exceptions have the same class, the same message, and the same backtrace" # Expected #<TypeError: message> == #<TypeError: message> to be truthy but was false
+  fails "Exception#== returns true if one exception is the dup'd copy of the other" # Expected #<ArgumentError: ArgumentError> == #<ArgumentError: ArgumentError> to be truthy but was false
+  fails "Exception#== returns true if the two objects subclass Exception and have the same message and backtrace" # Expected #<ExceptionSpecs::UnExceptional: ExceptionSpecs::UnExceptional> == #<ExceptionSpecs::UnExceptional: ExceptionSpecs::UnExceptional> to be truthy but was false
+  fails "Exception#backtrace captures the backtrace for an exception into $!" # Expected "<internal:corelib/kernel.rb>:536:23:in `new'" =~ /backtrace_spec/ to be truthy but was nil
+  fails "Exception#backtrace captures the backtrace for an exception into $@" # Expected "<internal:corelib/kernel.rb>:536:23:in `new'" =~ /backtrace_spec/ to be truthy but was nil
+  fails "Exception#backtrace includes the filename of the location immediately prior to where self raised in the second element" # Expected "ruby/core/exception/fixtures/common.rb:7:9:in `raise'" =~ /backtrace_spec\.rb/ to be truthy but was nil
+  fails "Exception#backtrace includes the filename of the location where self raised in the first element" # Expected "<internal:corelib/kernel.rb>:536:23:in `new'" =~ /common\.rb/ to be truthy but was nil
+  fails "Exception#backtrace includes the line number of the location immediately prior to where self raised in the second element" # Expected "ruby/core/exception/fixtures/common.rb:7:9:in `raise'" =~ /:6(:in )?/ to be truthy but was nil
+  fails "Exception#backtrace includes the line number of the location where self raised in the first element" # Expected "<internal:corelib/kernel.rb>:536:23:in `new'" =~ /:7:in / to be truthy but was nil
+  fails "Exception#backtrace includes the name of the method from where self raised in the first element" # Expected "<internal:corelib/kernel.rb>:536:23:in `new'" =~ /in `backtrace'/ to be truthy but was nil
+  fails "Exception#backtrace returns nil if no backtrace was set" # Expected ["ruby/core/exception/backtrace_spec.rb:10:5:in `new'", "<internal:corelib/basic_object.rb>:119:1:in `instance_exec'", "<internal:corelib/runtime.js>:1780:5:in `Opal.send2'", "<internal:corelib/runtime.js>:1770:5:in `Opal.send'", "mspec/runner/mspec.rb:114:7:in `instance_exec'", "<internal:corelib/runtime.js>:1780:5:in `Opal.send2'", "<internal:corelib/runtime.js>:1770:5:in `Opal.send'", "mspec/runner/context.rb:176:34:in `protect'", "<internal:corelib/runtime.js>:1569:5:in `Opal.yieldX'", "<internal:corelib/enumerable.rb>:27:16:in `$$3'"] to be nil
+  fails "Exception#backtrace_locations produces a backtrace for an exception captured using $!" # Expected "<internal:corelib/kernel.rb>" =~ /backtrace_locations_spec/ to be truthy but was nil
+  fails "Exception#backtrace_locations returns nil if no backtrace was set" # Expected ["ruby/core/exception/backtrace_locations_spec.rb:10:5:in `new'", "<internal:corelib/basic_object.rb>:119:1:in `instance_exec'", "<internal:corelib/runtime.js>:1780:5:in `Opal.send2'", "<internal:corelib/runtime.js>:1770:5:in `Opal.send'", "mspec/runner/mspec.rb:114:7:in `instance_exec'", "<internal:corelib/runtime.js>:1780:5:in `Opal.send2'", "<internal:corelib/runtime.js>:1770:5:in `Opal.send'", "mspec/runner/context.rb:176:34:in `protect'", "<internal:corelib/runtime.js>:1569:5:in `Opal.yieldX'", "<internal:corelib/enumerable.rb>:27:16:in `$$3'"] to be nil
+  fails "Exception#cause is set for internal errors caused by user errors" # Expected ZeroDivisionError but no exception was raised (Infinity was returned)
+  fails "Exception#cause is set for user errors caused by internal errors" # Expected RuntimeError but no exception was raised (Infinity was returned)
+  fails "Exception#exception captures an exception into $!" # Expected "RuntimeError" == "" to be truthy but was false
+  fails "Exception#full_message contains all the chain of exceptions" # Expected  "<internal:corelib/kernel.rb>:539:23:in `new': \e[1mlast exception (\e[1;4mRuntimeError\e[1m)\e[m \tfrom ruby/core/exception/full_message_spec.rb:81:11:in `raise' \tfrom <internal:corelib/basic_object.rb>:119:1:in `instance_exec' \tfrom <internal:corelib/runtime.js>:1780:5:in `Opal.send2' \tfrom <internal:corelib/runtime.js>:1770:5:in `Opal.send' \tfrom mspec/runner/mspec.rb:114:7:in `instance_exec' \tfrom <internal:corelib/runtime.js>:1780:5:in `Opal.send2' \tfrom <internal:corelib/runtime.js>:1770:5:in `Opal.send' \tfrom mspec/runner/context.rb:176:34:in `protect' \tfrom <internal:corelib/runtime.js>:1569:5:in `Opal.yieldX' <internal:corelib/kernel.rb>:539:23:in `new': \e[1morigin exception (\e[1;4mRuntimeError\e[1m)\e[m \tfrom ruby/core/exception/full_message_spec.rb:76:13:in `raise' \tfrom <internal:corelib/basic_object.rb>:119:1:in `instance_exec' \tfrom <internal:corelib/runtime.js>:1780:5:in `Opal.send2' \tfrom <internal:corelib/runtime.js>:1770:5:in `Opal.send' \tfrom mspec/runner/mspec.rb:114:7:in `instance_exec' \tfrom <internal:corelib/runtime.js>:1780:5:in `Opal.send2' \tfrom <internal:corelib/runtime.js>:1770:5:in `Opal.send' \tfrom mspec/runner/context.rb:176:34:in `protect' \tfrom <internal:corelib/runtime.js>:1569:5:in `Opal.yieldX' " to include "intermediate exception"
+  fails "Exception#full_message shows the caller if the exception has no backtrace" # Expected ["ruby/core/exception/full_message_spec.rb:37:11:in `new'",  "<internal:corelib/basic_object.rb>:119:1:in `instance_exec'",  "<internal:corelib/runtime.js>:1780:5:in `Opal.send2'",  "<internal:corelib/runtime.js>:1770:5:in `Opal.send'",  "mspec/runner/mspec.rb:114:7:in `instance_exec'",  "<internal:corelib/runtime.js>:1780:5:in `Opal.send2'",  "<internal:corelib/runtime.js>:1770:5:in `Opal.send'",  "mspec/runner/context.rb:176:34:in `protect'",  "<internal:corelib/runtime.js>:1569:5:in `Opal.yieldX'",  "<internal:corelib/enumerable.rb>:27:16:in `$$3'"] == nil to be truthy but was false
+  fails "Exception#full_message shows the exception class at the end of the first line of the message when the message contains multiple lines" # Expected  "<internal:corelib/kernel.rb>:539:23:in `new': first line " to include "ruby/core/exception/full_message_spec.rb:46:in `"
+  fails "Exception#full_message supports :order option and places the error message and the backtrace at the top or the bottom" # Expected  "a.rb:1: Some runtime error (RuntimeError) \tfrom b.rb:2 " =~ /a.rb:1.*b.rb:2/m to be truthy but was nil
+  fails "Exception#set_backtrace raises a TypeError when passed a Symbol" # Expected TypeError but no exception was raised ("unhappy" was returned)
+  fails "Exception#set_backtrace raises a TypeError when the Array contains a Symbol" # Expected TypeError but no exception was raised (["String", "unhappy"] was returned)
+  fails "Exception#to_s calls #to_s on the message" # Mock 'message' expected to receive to_s("any_args") exactly 1 times but received it 2 times
+  fails "Interrupt is raised on the main Thread by the default SIGINT handler" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x6b5e8>
+  fails "Interrupt.new returns an instance of interrupt with no message given" # NoMethodError: undefined method `signo' for #<Interrupt: Interrupt>
+  fails "Interrupt.new takes an optional message argument" # NoMethodError: undefined method `signo' for #<Interrupt: message>
+  fails "KeyError accepts :receiver and :key options" # ArgumentError: no receiver is available
+  fails "LocalJumpError#exit_value returns the value given to return" # Expected LocalJumpError but got: Exception (unexpected return)
+  fails "LocalJumpError#reason returns 'return' for a return" # Expected LocalJumpError but got: Exception (unexpected return)
+  fails "NameError#dup copies the name and receiver" # NoMethodError: undefined method `receiver' for #<NoMethodError: undefined method `foo' for #<MSpecEnv:0x69be8>>
+  fails "NameError#name returns a class variable name as a symbol" # Expected "binding" == "@@doesnt_exist" to be truthy but was false
+  fails "NameError#receiver returns a class when an undefined class variable is called in a subclass' namespace" # NoMethodError: undefined method `receiver' for #<NameError: uninitialized class variable @@doesnt_exist in NameErrorSpecs::ReceiverClass>
+  fails "NameError#receiver returns a class when an undefined constant is called" # NoMethodError: undefined method `receiver' for #<NameError: uninitialized constant NameErrorSpecs::ReceiverClass::DoesntExist>
+  fails "NameError#receiver returns the Object class when an undefined class variable is called" # NoMethodError: undefined method `receiver' for #<NoMethodError: undefined method `binding' for #<MSpecEnv:0x6665c>>
+  fails "NameError#receiver returns the Object class when an undefined constant is called without namespace" # NoMethodError: undefined method `receiver' for #<NameError: uninitialized constant DoesntExist>
+  fails "NameError#receiver returns the object that raised the exception" # NoMethodError: undefined method `receiver' for #<NoMethodError: undefined method `doesnt_exist' for #<Object:0x6667e>>
+  fails "NameError#receiver returns the receiver when raised from #class_variable_get" # NoMethodError: undefined method `receiver' for #<NameError: `invalid_cvar_name' is not allowed as a class variable name>
+  fails "NameError#receiver returns the receiver when raised from #instance_variable_get" # NoMethodError: undefined method `receiver' for #<NameError: 'invalid_ivar_name' is not allowed as an instance variable name>
+  fails "NameError#to_s raises its own message for an undefined variable" # Expected "undefined method `not_defined' for #<MSpecEnv:0x19344>" =~ /undefined local variable or method `not_defined'/ to be truthy but was nil
+  fails "NameError.new accepts a :receiver keyword argument" # ArgumentError: [NameError#initialize] wrong number of arguments(3 for -2)
+  fails "NoMethodError#dup copies the name, arguments and receiver" # NoMethodError: undefined method `receiver' for #<NoMethodError: undefined method `foo' for #<Object:0x31eb8>>
+  fails "NoMethodError#message uses #name to display the receiver if it is a class or a module" # Expected "undefined method `foo' for #<Class:0x31e84>" == "undefined method `foo' for MyClass:Class" to be truthy but was false
+  fails "NoMethodError.new accepts a :receiver keyword argument" # NoMethodError: undefined method `receiver' for #<NoMethodError: msg>
+  fails "SignalException can be rescued" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x626ae>
+  fails "SignalException cannot be trapped with Signal.trap" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x626ae>
+  fails "SignalException runs after at_exit" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x626ae>
+  fails "SignalException self-signals for USR1" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x626ae>
+  fails "SignalException#signm returns the signal name" # Expected SignalException but got: NoMethodError (undefined method `kill' for Process)
+  fails "SignalException#signo returns the signal number" # Expected SignalException but got: NoMethodError (undefined method `kill' for Process)
+  fails "SignalException.new raises an exception for an optional argument with a signal name" # Expected ArgumentError but no exception was raised (#<SignalException: INT> was returned)
+  fails "SignalException.new raises an exception with an invalid first argument type" # Expected ArgumentError but no exception was raised (#<SignalException: #<Object:0x6271c>> was returned)
+  fails "SignalException.new raises an exception with an invalid signal name" # Expected ArgumentError but no exception was raised (#<SignalException: NONEXISTENT> was returned)
+  fails "SignalException.new raises an exception with an invalid signal number" # Expected ArgumentError but no exception was raised (#<SignalException: 100000> was returned)
+  fails "SignalException.new takes a signal name with SIG prefix as the first argument" # NoMethodError: undefined method `signo' for #<SignalException: SIGINT>
+  fails "SignalException.new takes a signal name without SIG prefix as the first argument" # NoMethodError: undefined method `signo' for #<SignalException: INT>
+  fails "SignalException.new takes a signal number as the first argument" # NoMethodError: undefined method `list' for Signal
+  fails "SignalException.new takes a signal symbol with SIG prefix as the first argument" # NoMethodError: undefined method `signo' for #<SignalException: SIGINT>
+  fails "SignalException.new takes a signal symbol without SIG prefix as the first argument" # NoMethodError: undefined method `signo' for #<SignalException: INT>
+  fails "SignalException.new takes an optional message argument with a signal number" # NoMethodError: undefined method `list' for Signal
+  fails "StopIteration#result returns the method-returned-object from an Enumerator" # NoMethodError: undefined method `next' for #<Enumerator: #<Object:0x4fb42>:each>
+  fails "SystemCallError#backtrace is nil if not raised" # Expected ["ruby/core/exception/system_call_error_spec.rb:141:5:in `new'",  "<internal:corelib/basic_object.rb>:119:1:in `instance_exec'",  "<internal:corelib/runtime.js>:1780:5:in `Opal.send2'",  "<internal:corelib/runtime.js>:1770:5:in `Opal.send'",  "mspec/runner/mspec.rb:114:7:in `instance_exec'",  "<internal:corelib/runtime.js>:1780:5:in `Opal.send2'",  "<internal:corelib/runtime.js>:1770:5:in `Opal.send'",  "mspec/runner/context.rb:176:34:in `protect'",  "<internal:corelib/runtime.js>:1569:5:in `Opal.yieldX'",  "<internal:corelib/enumerable.rb>:27:16:in `$$3'"] == nil to be truthy but was false
+  fails "SystemCallError#dup copies the errno" # NoMethodError: undefined method `errno' for #<SystemCallError: message>
+  fails "SystemCallError#errno returns the errno given as optional argument to new" # NoMethodError: undefined method `errno' for #<SystemCallError: message>
+  fails "SystemCallError#message returns the default message when no message is given" # Expected "268435456" =~ /Unknown error/i to be truthy but was nil
+  fails "SystemCallError.=== returns false if errnos different" # NoMethodError: undefined method `+' for Errno
+  fails "SystemCallError.=== returns true if errnos same" # Expected false == true to be truthy but was false
+  fails "SystemCallError.new accepts an optional custom message preceding the errno" # Expected #<SystemCallError: custom message> (SystemCallError) to be an instance of Errno::EINVAL
+  fails "SystemCallError.new accepts an optional third argument specifying the location" # Expected #<SystemCallError: custom message> (SystemCallError) to be an instance of Errno::EINVAL
+  fails "SystemCallError.new accepts single Integer argument as errno" # NoMethodError: undefined method `errno' for #<SystemCallError: -16777216>
+  fails "SystemCallError.new coerces location if it is not a String" # Expected "foo" =~ /@ not_a_string - foo/ to be truthy but was nil
+  fails "SystemCallError.new constructs the appropriate Errno class" # Expected #<SystemCallError: Errno> (SystemCallError) to be an instance of Errno::EINVAL
+  fails "SystemCallError.new converts to Integer if errno is a Complex convertible to Integer" # Expected #<SystemCallError: foo> == #<SystemCallError: foo> to be truthy but was false
+  fails "SystemCallError.new converts to Integer if errno is a Float" # Expected #<SystemCallError: foo> == #<SystemCallError: foo> to be truthy but was false
+  fails "SystemCallError.new raises RangeError if errno is a Complex not convertible to Integer" # Expected RangeError (/can't convert/) but no exception was raised (#<SystemCallError: foo> was returned)
+  fails "SystemCallError.new raises TypeError if errno is not an Integer" # Expected TypeError (/no implicit conversion of String into Integer/) but no exception was raised (#<SystemCallError: foo> was returned)
+  fails "SystemCallError.new raises TypeError if message is not a String" # Expected TypeError (/no implicit conversion of Symbol into String/) but no exception was raised (#<SystemCallError: foo> was returned)
+  fails "SystemCallError.new requires at least one argument" # Expected ArgumentError but no exception was raised (#<SystemCallError: SystemCallError> was returned)
+  fails "SystemExit sets the exit status and exits silently when raised when subclassed" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x6edd2>
+  fails "SystemExit sets the exit status and exits silently when raised" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x6edd2>
+  fails_badly "SystemExit#status returns the exit status"
+  fails_badly "SystemExit#success? returns false if the process exited unsuccessfully"
+  fails_badly "SystemExit#success? returns true if the process exited successfully"
+end
diff --git a/spec/filters/bugs/file.rb b/spec/filters/bugs/file.rb
new file mode 100644
index 00000000..2711d8c4
--- /dev/null
+++ b/spec/filters/bugs/file.rb
@@ -0,0 +1,46 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "File" do
+  fails "File.absolute_path accepts a second argument of a directory from which to resolve the path" # Expected "./ruby/core/file/ruby/core/file/absolute_path_spec.rb" to equal "ruby/core/file/absolute_path_spec.rb"
+  fails "File.absolute_path does not expand '~user' to a home directory." # Expected "./ruby/core/file/~user" to equal "ruby/core/file/~user"
+  fails "File.absolute_path resolves paths relative to the current working directory" # Expected "./ruby/core/file/hello.txt" to equal "ruby/core/file/hello.txt"
+  fails "File.absolute_path? calls #to_path on its argument" # Mock 'path' expected to receive to_path("any_args") exactly 1 times but received it 0 times
+  fails "File.absolute_path? does not expand '~' to a home directory." # NoMethodError: undefined method `absolute_path?' for File
+  fails "File.absolute_path? does not expand '~user' to a home directory." # NoMethodError: undefined method `absolute_path?' for File
+  fails "File.absolute_path? returns false if it's a relative path" # NoMethodError: undefined method `absolute_path?' for File
+  fails "File.absolute_path? returns false if it's a tricky relative path" # NoMethodError: undefined method `absolute_path?' for File
+  fails "File.absolute_path? returns true if it's an absolute pathname" # NoMethodError: undefined method `absolute_path?' for File
+  fails "File.absolute_path? takes into consideration the platform's root" # NoMethodError: undefined method `absolute_path?' for File
+  fails "File.expand_path accepts objects that have a #to_path method" # Mock 'path' expected to receive 'to_path' exactly 1 times but received it 0 times
+  fails "File.expand_path converts a pathname to an absolute pathname" # Expected "" to equal nil
+  fails "File.expand_path converts a pathname to an absolute pathname, Ruby-Talk:18512" # NoMethodError: undefined method `empty?' for nil
+  fails "File.expand_path converts a pathname to an absolute pathname, using a complete path" # Expected "." to equal ""
+  fails "File.expand_path does not expand ~ENV['USER'] when it's not at the start" # ArgumentError: [Dir.home] wrong number of arguments(1 for 0)
+  fails "File.expand_path does not modify a HOME string argument" # ArgumentError: [Dir.home] wrong number of arguments(1 for 0)
+  fails "File.expand_path does not modify the string argument" # Expected "a/c" to equal "/a/c"
+  fails "File.expand_path does not replace multiple '/' at the beginning of the path" # ArgumentError: [Dir.home] wrong number of arguments(1 for 0)
+  fails "File.expand_path expand path with" # ArgumentError: [Dir.home] wrong number of arguments(1 for 0)
+  fails "File.expand_path expand_path for common unix path gives a full path" # ArgumentError: [Dir.home] wrong number of arguments(1 for 0)
+  fails "File.expand_path expands ../foo with ~/dir as base dir to /path/to/user/home/foo" # ArgumentError: [Dir.home] wrong number of arguments(1 for 0)
+  fails "File.expand_path expands /./dir to /dir" # ArgumentError: [Dir.home] wrong number of arguments(1 for 0)
+  fails "File.expand_path expands a path when the default external encoding is BINARY" # ArgumentError: [Dir.home] wrong number of arguments(1 for 0)
+  fails "File.expand_path expands a path with multi-byte characters" # Expected "Ångström" to equal "/Ångström"
+  fails "File.expand_path expands ~ENV['USER'] to the user's home directory" # Expected "./~elia" to equal "/Users/elia"
+  fails "File.expand_path expands ~ENV['USER']/a to a in the user's home directory" # ArgumentError: [Dir.home] wrong number of arguments(1 for 0)
+  fails "File.expand_path keeps trailing dots on absolute pathname" # ArgumentError: [Dir.home] wrong number of arguments(1 for 0)
+  fails "File.expand_path raises a TypeError if not passed a String type" # NoMethodError: undefined method `split' for 1
+  fails "File.expand_path raises an ArgumentError if the path is not valid" # Expected ArgumentError but no exception was raised ("./~a_not_existing_user" was returned)
+  fails "File.expand_path raises an Encoding::CompatibilityError if the external encoding is not compatible" # ArgumentError: [Dir.home] wrong number of arguments(1 for 0)
+  fails "File.expand_path replaces multiple '/' with a single '/'" # ArgumentError: [Dir.home] wrong number of arguments(1 for 0)
+  fails "File.expand_path returns a String in the same encoding as the argument" # NameError: uninitialized constant Encoding::SHIFT_JIS
+  fails "File.expand_path returns a String when passed a String subclass" # NameError: uninitialized constant FileSpecs
+  fails "File.expand_path when HOME is not set raises an ArgumentError when passed '~' if HOME == ''" # Expected ArgumentError but no exception was raised ("/" was returned)
+  fails "File.expand_path with a non-absolute HOME raises an ArgumentError" # Expected ArgumentError (non-absolute home) but no exception was raised ("non-absolute" was returned)
+  fails "File.extname for a filename ending with a dot returns '.'" # Expected "" == "." to be truthy but was false
+  fails "File.join calls #to_path"
+  fails "File.join calls #to_str"
+  fails "File.join inserts the separator in between empty strings and arrays"
+  fails "File.join raises a TypeError exception when args are nil"
+  fails "File.join raises an ArgumentError if passed a recursive array"
+  fails "File.join raises errors for null bytes" # Expected ArgumentError but no exception was raised ("\u0000x/metadata.gz" was returned)
+  fails "File.join returns a duplicate string when given a single argument"
+end
diff --git a/spec/filters/bugs/float.rb b/spec/filters/bugs/float.rb
new file mode 100644
index 00000000..3b601a00
--- /dev/null
+++ b/spec/filters/bugs/float.rb
@@ -0,0 +1,53 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "Float" do
+  fails "Float constant MAX is 1.7976931348623157e+308"
+  fails "Float constant MIN is 2.2250738585072014e-308"
+  fails "Float#<=> raises TypeError when #coerce misbehaves" # Expected TypeError (coerce must return [x, y]) but no exception was raised (nil was returned)
+  fails "Float#<=> returns 0 when self is Infinity and other other is infinite?=1" # Expected nil == 0 to be truthy but was false
+  fails "Float#<=> returns 1 when self is Infinity and other is infinite?=-1" # Expected nil == 1 to be truthy but was false
+  fails "Float#<=> returns 1 when self is Infinity and other is infinite?=nil (which means finite)" # Expected nil == 1 to be truthy but was false
+  fails "Float#divmod returns an [quotient, modulus] from dividing self by other" # precision errors caused by Math.frexp and Math.ldexp
+  fails "Float#inspect emits a trailing '.0' for a whole number" # Expected "50" == "50.0" to be truthy but was false
+  fails "Float#inspect emits a trailing '.0' for the mantissa in e format" # Expected "100000000000000000000" == "1.0e+20" to be truthy but was false
+  fails "Float#inspect encoding returns a String in US-ASCII encoding when Encoding.default_internal is nil" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "Float#inspect encoding returns a String in US-ASCII encoding when Encoding.default_internal is not nil" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "Float#inspect matches random examples in all ranges" # Expected "4.9247416523566613e-8" == "4.9247416523566613e-08" to be truthy but was false
+  fails "Float#inspect matches random examples in human ranges" # Expected "174" == "174.0" to be truthy but was false
+  fails "Float#inspect matches random values from divisions" # Expected "0" == "0.0" to be truthy but was false
+  fails "Float#inspect returns '0.0' for 0.0" # Expected "0" == "0.0" to be truthy but was false
+  fails "Float#inspect uses e format for a negative value with fractional part having 6 significant figures" # Expected "-0.00001" == "-1.0e-05" to be truthy but was false
+  fails "Float#inspect uses e format for a negative value with whole part having 17 significant figures" # Expected "-1000000000000000" == "-1.0e+15" to be truthy but was false
+  fails "Float#inspect uses e format for a negative value with whole part having 18 significant figures" # Expected "-10000000000000000" == "-1.0e+16" to be truthy but was false
+  fails "Float#inspect uses e format for a positive value with fractional part having 6 significant figures" # Expected "0.00001" == "1.0e-05" to be truthy but was false
+  fails "Float#inspect uses e format for a positive value with whole part having 17 significant figures" # Expected "1000000000000000" == "1.0e+15" to be truthy but was false
+  fails "Float#inspect uses e format for a positive value with whole part having 18 significant figures" # Expected "10000000000000000" == "1.0e+16" to be truthy but was false
+  fails "Float#inspect uses non-e format for a negative value with whole part having 15 significant figures" # Expected "-10000000000000" == "-10000000000000.0" to be truthy but was false
+  fails "Float#inspect uses non-e format for a negative value with whole part having 16 significant figures" # Expected "-100000000000000" == "-100000000000000.0" to be truthy but was false
+  fails "Float#inspect uses non-e format for a positive value with whole part having 15 significant figures" # Expected "10000000000000" == "10000000000000.0" to be truthy but was false
+  fails "Float#inspect uses non-e format for a positive value with whole part having 16 significant figures" # Expected "100000000000000" == "100000000000000.0" to be truthy but was false
+  fails "Float#negative? on negative zero returns false" # Expected true to be false
+  fails "Float#rationalize returns self as a simplified Rational with no argument" # precision errors caused by Math.frexp and Math.ldexp
+  fails "Float#round raise for a non-existent round mode" # TypeError: no implicit conversion of Hash into Integer
+  fails "Float#round raises FloatDomainError for exceptional values with a half option" # TypeError: no implicit conversion of Hash into Integer
+  fails "Float#round returns big values rounded to nearest" # Expected 0 to have same value and type as 300000000000000000000
+  fails "Float#round returns different rounded values depending on the half option" # TypeError: no implicit conversion of Hash into Integer
+  fails "Float#round rounds self to an optionally given precision with a half option" # ArgumentError: [Number#round] wrong number of arguments(2 for -1)
+  fails "Float#round when 0.0 is given returns 0 for 0 or undefined ndigits" # TypeError: no implicit conversion of Hash into Integer
+  fails "Float#round when 0.0 is given returns self for positive ndigits" # Expected "0" == "0.0" to be truthy but was false
+  fails "Float#to_s encoding returns a String in US-ASCII encoding when Encoding.default_internal is nil" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "Float#to_s encoding returns a String in US-ASCII encoding when Encoding.default_internal is not nil" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "Float#to_s matches random examples in all ranges" # Expected "4.9247416523566613e-8" to equal "4.9247416523566613e-08"
+  fails "Float#to_s matches random examples in human ranges" # Expected "174" to equal "174.0"
+  fails "Float#to_s matches random values from divisions" # Expected "0" to equal "0.0"
+  fails "Float#to_s uses e format for a negative value with fractional part having 6 significant figures"
+  fails "Float#to_s uses e format for a negative value with whole part having 17 significant figures" # Expected "-1000000000000000" to equal "-1.0e+15"
+  fails "Float#to_s uses e format for a negative value with whole part having 18 significant figures"
+  fails "Float#to_s uses e format for a positive value with fractional part having 6 significant figures"
+  fails "Float#to_s uses e format for a positive value with whole part having 17 significant figures" # Expected "1000000000000000" to equal "1.0e+15"
+  fails "Float#to_s uses e format for a positive value with whole part having 18 significant figures"
+  fails "Float#to_s uses non-e format for a negative value with whole part having 15 significant figures"
+  fails "Float#to_s uses non-e format for a negative value with whole part having 16 significant figures"
+  fails "Float#to_s uses non-e format for a positive value with whole part having 15 significant figures"
+  fails "Float#to_s uses non-e format for a positive value with whole part having 16 significant figures"
+  fails "Float#truncate returns self truncated to an Integer"
+end
diff --git a/spec/filters/bugs/hash.rb b/spec/filters/bugs/hash.rb
new file mode 100644
index 00000000..e6a38af1
--- /dev/null
+++ b/spec/filters/bugs/hash.rb
@@ -0,0 +1,50 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "Hash" do
+  fails "Hash#== compares keys with eql? semantics" # spec relies on integer and float being different
+  fails "Hash#== computes equality for complex recursive hashes"
+  fails "Hash#== computes equality for recursive hashes & arrays"
+  fails "Hash#[] compares keys with eql? semantics" # spec relies on integer and float being different
+  fails "Hash#[] does not create copies of the immediate default value" # spec uses mutable string
+  fails "Hash#[] does not dispatch to hash for Boolean, Integer, Float, String, or Symbol" # NoMethodError: undefined method `insert' for "rubyexe.rb"
+  fails "Hash#[]= does not dispatch to hash for Boolean, Integer, Float, String, or Symbol" # NoMethodError: undefined method `insert' for "rubyexe.rb"
+  fails "Hash#[]= keeps the existing String key in the hash if there is a matching one" # Expected "foo" not to be identical to "foo"
+  fails "Hash#compare_by_identity gives different identity for string literals" # Expected [2] to equal [1, 2]
+  fails "Hash#each always yields an Array of 2 elements, even when given a callable of arity 2" # Expected ArgumentError but no exception was raised ({"a"=>1} was returned)
+  fails "Hash#each_pair always yields an Array of 2 elements, even when given a callable of arity 2" # Expected ArgumentError but no exception was raised ({"a"=>1} was returned)
+  fails "Hash#eql? compares keys with eql? semantics" # spec relies on integer and float being different
+  fails "Hash#eql? computes equality for complex recursive hashes"
+  fails "Hash#eql? computes equality for recursive hashes & arrays"
+  fails "Hash#except always returns a Hash without a default" # NoMethodError: undefined method `except' for {"bar"=>12, "foo"=>42}
+  fails "Hash#inspect calls #to_s on the object returned from #inspect if the Object isn't a String" # Expected "{\"a\"=>abc}" to equal "{:a=>abc}"
+  fails "Hash#inspect does not call #to_s on a String returned from #inspect" # Expected "{\"a\"=>\"abc\"}" to equal "{:a=>\"abc\"}"
+  fails "Hash#inspect does not call #to_str on the object returned from #inspect when it is not a String" # Expected "{\"a\"=>#<MockObject:0x30638>}" to match /^\{:a=>#<MockObject:0x[0-9a-f]+>\}$/
+  fails "Hash#inspect does not call #to_str on the object returned from #to_s when it is not a String" # Exception: Cannot convert object to primitive value
+  fails "Hash#invert compares new keys with eql? semantics" # spec relies on integer and float being different
+  fails "Hash#rehash removes duplicate keys for large hashes" # Expected 102 == 101 to be truthy but was false
+  fails "Hash#rehash removes duplicate keys" # Expected 2 to equal 1
+  fails "Hash#store does not dispatch to hash for Boolean, Integer, Float, String, or Symbol" # NoMethodError: undefined method `insert' for "rubyexe.rb"
+  fails "Hash#store keeps the existing String key in the hash if there is a matching one" # Expected "foo" not to be identical to "foo"
+  fails "Hash#to_h with block does not coerce returned pair to Array with #to_a" # Expected TypeError (/wrong element type MockObject/) but no exception was raised ({"a"=>1} was returned)
+  fails "Hash#to_h with block raises ArgumentError if block returns longer or shorter array" # Expected ArgumentError (/element has wrong array length/) but no exception was raised ({"a"=>1, "b"=>2} was returned)
+  fails "Hash#to_h with block raises TypeError if block returns something other than Array" # Expected TypeError (/wrong element type String/) but no exception was raised ({"a"=>1, "b"=>2} was returned)
+  fails "Hash#to_proc the returned proc has an arity of 1" # Expected -1 == 1 to be truthy but was false
+  fails "Hash#to_proc the returned proc is a lambda" # Expected #<Proc:0x231fa>.lambda? to be truthy but was false
+  fails "Hash#to_s calls #to_s on the object returned from #inspect if the Object isn't a String" # Expected "{\"a\"=>abc}" to equal "{:a=>abc}"
+  fails "Hash#to_s does not call #to_s on a String returned from #inspect" # Expected "{\"a\"=>\"abc\"}" to equal "{:a=>\"abc\"}"
+  fails "Hash#to_s does not call #to_str on the object returned from #inspect when it is not a String" # Expected "{\"a\"=>#<MockObject:0x1b948>}" to match /^\{:a=>#<MockObject:0x[0-9a-f]+>\}$/
+  fails "Hash#to_s does not call #to_str on the object returned from #to_s when it is not a String" # Exception: Cannot convert object to primitive value
+  fails "Hash#transform_keys allows a combination of hash and block argument" # ArgumentError: [Hash#transform_keys] wrong number of arguments(1 for 0)
+  fails "Hash#transform_keys allows a hash argument" # ArgumentError: [Hash#transform_keys] wrong number of arguments(1 for 0)
+  fails "Hash#transform_keys allows a partial transformation of keys when using a hash argument" # ArgumentError: [Hash#transform_keys] wrong number of arguments(1 for 0)
+  fails "Hash#transform_keys! allows a hash argument" # ArgumentError: [Hash#transform_keys!] wrong number of arguments(1 for 0)
+  fails "Hash#transform_keys! on frozen instance raises a FrozenError on hash argument" # Expected FrozenError but got: ArgumentError ([Hash#transform_keys!] wrong number of arguments(1 for 0))
+  fails "Hash#transform_keys! prevents conflicts between new keys and old ones" # Expected {"e"=>1} to equal {"b"=>1, "c"=>2, "d"=>3, "e"=>4}
+  fails "Hash#transform_keys! returns the processed keys and non evaluated keys if we broke from the block" # Expected {"c"=>1, "d"=>4} == {"b"=>1, "c"=>2, "d"=>4} to be truthy but was false
+  fails "Hash.[] raises for elements that are not arrays" # Expected ArgumentError but no exception was raised (nil was returned)
+  fails "Hash.ruby2_keywords_hash raises TypeError for non-Hash" # Expected TypeError but got: NoMethodError (undefined method `ruby2_keywords_hash' for Hash)
+  fails "Hash.ruby2_keywords_hash returns a copy of a Hash and marks the copy as a keywords Hash" # NoMethodError: undefined method `ruby2_keywords_hash' for Hash
+  fails "Hash.ruby2_keywords_hash returns an instance of the subclass if called on an instance of a subclass of Hash" # NoMethodError: undefined method `ruby2_keywords_hash' for Hash
+  fails "Hash.ruby2_keywords_hash? raises TypeError for non-Hash" # Expected TypeError but got: NoMethodError (undefined method `ruby2_keywords_hash?' for Hash)
+  fails "Hash.ruby2_keywords_hash? returns false if the Hash is not a keywords Hash" # NoMethodError: undefined method `ruby2_keywords_hash?' for Hash
+  fails "Hash.ruby2_keywords_hash? returns true if the Hash is a keywords Hash marked by Module#ruby2_keywords" # NoMethodError: undefined method `ruby2_keywords' for #<Class:0x57648>
+end
diff --git a/spec/filters/bugs/integer.rb b/spec/filters/bugs/integer.rb
new file mode 100644
index 00000000..97ed479d
--- /dev/null
+++ b/spec/filters/bugs/integer.rb
@@ -0,0 +1,75 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "Integer" do
+  fails "A singleton class raises a TypeError for Integer's" # Expected TypeError but no exception was raised (#<Class:#<Number:0x3>> was returned)
+  fails "Bignum is deprecated" # NameError: uninitialized constant Bignum
+  fails "Bignum is unified into Integer" # NameError: uninitialized constant Bignum
+  fails "Fixnum is deprecated" # Expected warning to match: /constant ::Fixnum is deprecated/ but got: ""
+  fails "Fixnum is unified into Integer" # Expected Number to be identical to Integer
+  fails "Integer is the class of both small and large integers" # Expected Number to be identical to Integer
+  fails "Integer#& fixnum raises a TypeError when passed a Float" # Expected TypeError but no exception was raised (3 was returned)
+  fails "Integer#** bignum switch to a Float when the values is too big" # Expected warning to match: /warning: in a\*\*b, b may be too big/ but got: ""
+  fails "Integer#** fixnum raises a ZeroDivisionError for 0 ** -1" # Expected ZeroDivisionError but no exception was raised (Infinity was returned)
+  fails "Integer#** fixnum returns Float::INFINITY when the number is too big" # Expected warning to match: /warning: in a\*\*b, b may be too big/ but got: ""
+  fails "Integer#** fixnum returns self raised to the given power" # Exception: Maximum call stack size exceeded
+  fails "Integer#+ can be redefined" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x31b0a @method="+" @object=nil>
+  fails "Integer#/ fixnum coerces fixnum and return self divided by other" # Expected 1.0842021724855044e-19 to equal 0
+  fails "Integer#/ fixnum raises a ZeroDivisionError if the given argument is zero and not a Float" # Expected ZeroDivisionError but no exception was raised (Infinity was returned)
+  fails "Integer#/ fixnum returns result the same class as the argument" # Expected 1.5 to equal 1
+  fails "Integer#/ fixnum returns self divided by the given argument" # Expected 1.5 to equal 1
+  fails "Integer#/ fixnum supports dividing negative numbers" # Expected -0.1 to equal -1
+  fails "Integer#<< (with n << m) fixnum calls #to_int to convert the argument to an Integer" # Expected 3 == 0 to be truthy but was false
+  fails "Integer#<< (with n << m) fixnum returns -1 when n < 0, m < 0 and n > -(2**-m)" # Expected -7 to equal -1
+  fails "Integer#<< (with n << m) fixnum returns 0 when n > 0, m < 0 and n < 2**-m" # Expected 7 to equal 0
+  fails "Integer#>> (with n >> m) fixnum calls #to_int to convert the argument to an Integer" # Expected 8 == 0 to be truthy but was false
+  fails "Integer#>> (with n >> m) fixnum returns -1 when n < 0, m > 0 and n > -(2**m)" # Expected -7 to equal -1
+  fails "Integer#>> (with n >> m) fixnum returns 0 when n > 0, m > 0 and n < 2**m" # Expected 7 to equal 0
+  fails "Integer#[] fixnum when index and length passed ensures n[i, len] equals to (n >> i) & ((1 << len) - 1)" # ArgumentError: [Number#[]] wrong number of arguments(2 for 1)
+  fails "Integer#[] fixnum when index and length passed ignores negative length" # ArgumentError: [Number#[]] wrong number of arguments(2 for 1)
+  fails "Integer#[] fixnum when index and length passed moves start position to the most significant bits when negative index passed" # ArgumentError: [Number#[]] wrong number of arguments(2 for 1)
+  fails "Integer#[] fixnum when index and length passed returns specified number of bits from specified position" # ArgumentError: [Number#[]] wrong number of arguments(2 for 1)
+  fails "Integer#[] fixnum when range passed ensures n[i..] equals to (n >> i)" # Opal::SyntaxError: undefined method `type' for nil
+  fails "Integer#[] fixnum when range passed ensures n[i..j] equals to (n >> i) & ((1 << (j - i + 1)) - 1)" # TypeError: no implicit conversion of Range into Integer
+  fails "Integer#[] fixnum when range passed ignores upper boundary smaller than lower boundary" # TypeError: no implicit conversion of Range into Integer
+  fails "Integer#[] fixnum when range passed moves lower boundary to the most significant bits when negative value passed" # ArgumentError: [Number#[]] wrong number of arguments(2 for 1)
+  fails "Integer#[] fixnum when range passed raises FloatDomainError if any boundary is infinity" # Expected FloatDomainError (/Infinity/) but got: TypeError (no implicit conversion of Range into Integer)
+  fails "Integer#[] fixnum when range passed returns bits specified by range" # TypeError: no implicit conversion of Range into Integer
+  fails "Integer#[] fixnum when range passed when passed (..i) raises ArgumentError if any of i bit equals 1" # Expected ArgumentError (/The beginless range for Integer#\[\] results in infinity/) but got: Opal::SyntaxError (undefined method `type' for nil)
+  fails "Integer#[] fixnum when range passed when passed (..i) returns 0 if all i bits equal 0" # Opal::SyntaxError: undefined method `type' for nil
+  fails "Integer#^ fixnum raises a TypeError when passed a Float" # Expected TypeError but no exception was raised (0 was returned)
+  fails "Integer#^ fixnum returns self bitwise EXCLUSIVE OR other" # Expected 5 to equal 9223372041149743000
+  fails "Integer#chr with an encoding argument raises RangeError if self is invalid as a codepoint in the specified encoding"
+  fails "Integer#chr with an encoding argument raises a RangeError if self is too large" # Expected RangeError but no exception was raised ("膀" was returned)
+  fails "Integer#chr with an encoding argument raises a RangeError is self is less than 0"
+  fails "Integer#chr with an encoding argument returns a String encoding self interpreted as a codepoint in the CESU-8 encoding" # NameError: uninitialized constant Encoding::CESU_8
+  fails "Integer#chr with an encoding argument returns a String encoding self interpreted as a codepoint in the specified encoding"
+  fails "Integer#chr with an encoding argument returns a String with the specified encoding"
+  fails "Integer#chr with an encoding argument returns a new String for each call"
+  fails "Integer#chr without argument raises a RangeError is self is less than 0"
+  fails "Integer#chr without argument returns a new String for each call"
+  fails "Integer#chr without argument when Encoding.default_internal is nil and self is between 0 and 127 (inclusive) returns a US-ASCII String"
+  fails "Integer#chr without argument when Encoding.default_internal is nil raises a RangeError is self is greater than 255"
+  fails "Integer#chr without argument when Encoding.default_internal is not nil and self is between 0 and 127 (inclusive) returns a String encoding self interpreted as a US-ASCII codepoint"
+  fails "Integer#chr without argument when Encoding.default_internal is not nil and self is between 0 and 127 (inclusive) returns a US-ASCII String"
+  fails "Integer#chr without argument when Encoding.default_internal is not nil and self is between 128 and 255 (inclusive) returns a String containing self interpreted as a byte"
+  fails "Integer#chr without argument when Encoding.default_internal is not nil and self is between 128 and 255 (inclusive) returns a binary String" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "Integer#chr without argument when Encoding.default_internal is not nil and self is greater than 255 raises RangeError if self is invalid as a codepoint in the default internal encoding"
+  fails "Integer#chr without argument when Encoding.default_internal is not nil and self is greater than 255 returns a String encoding self interpreted as a codepoint in the default internal encoding"
+  fails "Integer#chr without argument when Encoding.default_internal is not nil and self is greater than 255 returns a String with the default internal encoding"
+  fails "Integer#coerce bigdecimal produces Floats" # Exception: other.$respond_to? is not a function
+  fails "Integer#coerce fixnum raises a TypeError when given an Object that does not respond to #to_f" # depends on the difference between string/symbol
+  fails "Integer#coerce fixnum when given a Fixnum returns an array containing two Fixnums" # Expected [Number, Number] == [Integer, Integer] to be truthy but was false
+  fails "Integer#div fixnum calls #coerce and #div if argument responds to #coerce" # Mock 'x' expected to receive div(#<MockObject:0x16c22>) exactly 1 times but received it 0 times
+  fails "Integer#divmod fixnum raises a TypeError when given a non-Integer" # NoMethodError: undefined method `nan?' for #<MockObject:0x1df78>
+  fails "Integer#odd? fixnum returns true when self is an odd number" # Expected false to be true
+  fails "Integer#pow one argument is passed fixnum returns Float::INFINITY when the number is too big" # Expected warning to match: /warning: in a\*\*b, b may be too big/ but got: ""
+  fails "Integer#pow one argument is passed fixnum returns self raised to the given power" # Exception: Maximum call stack size exceeded
+  fails "Integer#pow two arguments are passed raises a RangeError when the first argument is negative and the second argument is present" # Expected RangeError but got: TypeError (Integer#pow() 1st argument cannot be negative when 2nd argument specified)
+  fails "Integer#round raises ArgumentError for an unknown rounding mode" # ArgumentError: [Number#round] wrong number of arguments(2 for -1)
+  fails "Integer#round returns different rounded values depending on the half option" # ArgumentError: [Number#round] wrong number of arguments(2 for -1)
+  fails "Integer#round returns itself if passed a positive precision and the half option" # ArgumentError: [Number#round] wrong number of arguments(2 for -1)
+  fails "Integer#round returns itself rounded to nearest if passed a negative value" # Expected NaN to have same value and type as 300
+  fails "Integer#zero? Integer#zero? overrides Numeric#zero?" # Expected Number == Integer to be truthy but was false
+  fails "Integer#| fixnum raises a TypeError when passed a Float" # Expected TypeError but no exception was raised (3 was returned)
+  fails "Integer#| fixnum returns self bitwise OR other" # Expected 65535 to equal 9223372036854841000
+  fails "Integer.sqrt returns the integer square root of the argument" # Number overflow, 10**400
+end
diff --git a/spec/filters/bugs/io.rb b/spec/filters/bugs/io.rb
new file mode 100644
index 00000000..e48d402b
--- /dev/null
+++ b/spec/filters/bugs/io.rb
@@ -0,0 +1,9 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "IO" do
+  fails "IO::EAGAINWaitReadable combines Errno::EAGAIN and IO::WaitReadable" # NameError: uninitialized constant IO::EAGAINWaitReadable
+  fails "IO::EAGAINWaitReadable is the same as IO::EWOULDBLOCKWaitReadable if Errno::EAGAIN is the same as Errno::EWOULDBLOCK" # NameError: uninitialized constant Errno::EAGAIN
+  fails "IO::EAGAINWaitWritable combines Errno::EAGAIN and IO::WaitWritable" # NameError: uninitialized constant IO::EAGAINWaitWritable
+  fails "IO::EAGAINWaitWritable is the same as IO::EWOULDBLOCKWaitWritable if Errno::EAGAIN is the same as Errno::EWOULDBLOCK" # NameError: uninitialized constant Errno::EAGAIN
+  fails "IO::EWOULDBLOCKWaitReadable combines Errno::EWOULDBLOCK and IO::WaitReadable" # NameError: uninitialized constant IO::EWOULDBLOCKWaitReadable
+  fails "IO::EWOULDBLOCKWaitWritable combines Errno::EWOULDBLOCK and IO::WaitWritable" # NameError: uninitialized constant IO::EWOULDBLOCKWaitWritable
+end
diff --git a/spec/filters/bugs/kernel.rb b/spec/filters/bugs/kernel.rb
new file mode 100644
index 00000000..175a8e33
--- /dev/null
+++ b/spec/filters/bugs/kernel.rb
@@ -0,0 +1,374 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "Kernel" do
+  fails "Kernel#=== does not call #object_id nor #equal? but still returns true for #== or #=== on the same object" # Mock '#<Object:0x37dd4>' expected to receive 'object_id' exactly 0 times but received it 2 times
+  fails "Kernel#=~ returns nil matching any object"
+  fails "Kernel#Float for hexadecimal literals with binary exponent allows embedded _ in a number on either side of the P"
+  fails "Kernel#Float for hexadecimal literals with binary exponent allows embedded _ in a number on either side of the p"
+  fails "Kernel#Float for hexadecimal literals with binary exponent allows hexadecimal points on the left side of the 'P'"
+  fails "Kernel#Float for hexadecimal literals with binary exponent allows hexadecimal points on the left side of the 'p'"
+  fails "Kernel#Float for hexadecimal literals with binary exponent interprets the exponent (on the right of 'P') in decimal"
+  fails "Kernel#Float for hexadecimal literals with binary exponent interprets the exponent (on the right of 'p') in decimal"
+  fails "Kernel#Float for hexadecimal literals with binary exponent interprets the fractional part (on the left side of 'P') in hexadecimal"
+  fails "Kernel#Float for hexadecimal literals with binary exponent interprets the fractional part (on the left side of 'p') in hexadecimal"
+  fails "Kernel#Float for hexadecimal literals with binary exponent returns 0 for '0x1P-10000'"
+  fails "Kernel#Float for hexadecimal literals with binary exponent returns 0 for '0x1p-10000'"
+  fails "Kernel#Float for hexadecimal literals with binary exponent returns Infinity for '0x1P10000'"
+  fails "Kernel#Float for hexadecimal literals with binary exponent returns Infinity for '0x1p10000'"
+  fails "Kernel#Float when passed exception: false and invalid input swallows an error" # ArgumentError: [Object#Float] wrong number of arguments(2 for 1)
+  fails "Kernel#Float when passed exception: false and nil swallows it" # ArgumentError: [Object#Float] wrong number of arguments(2 for 1)
+  fails "Kernel#Float when passed exception: false and valid input returns a Float number" # ArgumentError: [Object#Float] wrong number of arguments(2 for 1)
+  fails "Kernel#Integer raises a TypeError when to_int returns not-an-Integer object and to_i returns nil" # Expected TypeError but no exception was raised ("1" was returned)
+  fails "Kernel#Integer return a result of to_i when to_int does not return an Integer" # Expected "1" == 42 to be truthy but was false
+  fails "Kernel#Integer when passed exception: false and an argument that contains a period swallows an error" # TypeError: no implicit conversion of Hash into Integer
+  fails "Kernel#Integer when passed exception: false and an empty string swallows an error" # TypeError: no implicit conversion of Hash into Integer
+  fails "Kernel#Integer when passed exception: false and invalid argument swallows an error" # ArgumentError: [MSpecEnv#Integer] wrong number of arguments(3 for -2)
+  fails "Kernel#Integer when passed exception: false and multiple leading -s swallows an error" # TypeError: no implicit conversion of Hash into Integer
+  fails "Kernel#Integer when passed exception: false and multiple trailing -s swallows an error" # TypeError: no implicit conversion of Hash into Integer
+  fails "Kernel#Integer when passed exception: false and no to_int or to_i methods exist swallows an error" # ArgumentError: base specified for non string value
+  fails "Kernel#Integer when passed exception: false and passed Infinity swallows an error" # ArgumentError: base specified for non string value
+  fails "Kernel#Integer when passed exception: false and passed NaN swallows an error" # ArgumentError: base specified for non string value
+  fails "Kernel#Integer when passed exception: false and passed a String that can't be converted to an Integer swallows an error" # TypeError: no implicit conversion of Hash into Integer
+  fails "Kernel#Integer when passed exception: false and passed a String that contains numbers normally parses it and returns an Integer" # TypeError: no implicit conversion of Hash into Integer
+  fails "Kernel#Integer when passed exception: false and passed nil swallows an error" # ArgumentError: base specified for non string value
+  fails "Kernel#Integer when passed exception: false and to_i returns a value that is not an Integer swallows an error" # ArgumentError: base specified for non string value
+  fails "Kernel#Integer when passed exception: false and to_int returns nil and no to_i exists swallows an error" # ArgumentError: base specified for non string value
+  fails "Kernel#Integer when passed exception: false and valid argument returns an Integer number" # ArgumentError: [MSpecEnv#Integer] wrong number of arguments(3 for -2)
+  fails "Kernel#Pathname returns same argument when called with a pathname argument" # Expected foo.equal? foo to be truthy but was false
+  fails "Kernel#String calls #to_s if #respond_to?(:to_s) returns true" # TypeError: no implicit conversion of MockObject into String
+  fails "Kernel#String raises a TypeError if #to_s is not defined, even though #respond_to?(:to_s) returns true"
+  fails "Kernel#__dir__ returns the expanded path of the directory when used in the main script" # NoMethodError: undefined method `insert' for "rubyexe.rb"
+  fails "Kernel#__dir__ when used in eval with top level binding returns nil" # NoMethodError: undefined method `binding' for #<MSpecEnv:0x5b3aa>
+  fails "Kernel#autoload calls main.require(path) to load the file" # NameError: uninitialized constant TOPLEVEL_BINDING
+  fails "Kernel#autoload can autoload in instance_eval" # NameError: uninitialized constant KSAutoloadD
+  fails "Kernel#autoload inside a Class.new method body should define on the new anonymous class" # NoMethodError: undefined method `autoload?' for #<#<Class:0x61d4a>:0x61d48>
+  fails "Kernel#autoload is a private method" # Expected Kernel to have private instance method 'autoload' but it does not
+  fails "Kernel#autoload when Object is frozen raises a FrozenError before defining the constant" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x7849c>
+  fails "Kernel#autoload when called from included module's method setups the autoload on the included module" # NoMethodError: undefined method `autoload?' for KernelSpecs::AutoloadMethod
+  fails "Kernel#autoload when called from included module's method the autoload is reachable from the class too" # NoMethodError: undefined method `autoload?' for KernelSpecs::AutoloadMethodIncluder
+  fails "Kernel#autoload when called from included module's method the autoload relative to the included module works" # NameError: uninitialized constant KernelSpecs::AutoloadMethod::AutoloadFromIncludedModule
+  fails "Kernel#autoload? is a private method" # Expected Kernel to have private instance method 'autoload?' but it does not
+  fails "Kernel#autoload? returns nil if no file has been registered for a constant" # NoMethodError: undefined method `autoload?' for #<MSpecEnv:0x7849c>
+  fails "Kernel#autoload? returns the name of the file that will be autoloaded" # NoMethodError: undefined method `autoload?' for #<MSpecEnv:0x7849c>
+  fails "Kernel#caller is a private method" # Expected Kernel to have private instance method 'caller' but it does not
+  fails "Kernel#caller returns an Array of caller locations using a custom offset" # Expected "ruby/core/kernel/fixtures/caller.rb:4" to match /runner\/mspec.rb/
+  fails "Kernel#caller returns an Array of caller locations using a range" # NoMethodError: undefined method `+' for 1..1
+  fails "Kernel#caller returns an Array with the block given to #at_exit at the base of the stack" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0xe208>
+  fails "Kernel#caller returns the locations as String instances" # Expected "corelib/runtime.js:1675" to include "ruby/core/kernel/caller_spec.rb:32:in"
+  fails "Kernel#caller works with beginless ranges" # TypeError: no implicit conversion of NilClass into Integer
+  fails "Kernel#caller works with endless ranges" # Opal::SyntaxError: undefined method `type' for nil
+  fails "Kernel#class returns the class of the object"
+  fails "Kernel#clone replaces a singleton object's metaclass with a new copy with the same superclass" # NoMethodError: undefined method `singleton_methods' for #<#<Class:0x2df8e>:0x2df90>
+  fails "Kernel#clone uses the internal allocator and does not call #allocate" # RuntimeError: allocate should not be called
+  fails "Kernel#define_singleton_method when given an UnboundMethod will raise when attempting to define an object's singleton method from another object's singleton method"
+  fails "Kernel#dup uses the internal allocator and does not call #allocate" # RuntimeError: allocate should not be called
+  fails "Kernel#eval allows a binding to be captured inside an eval"
+  fails "Kernel#eval allows creating a new class in a binding" # RuntimeError: Evaluation on a Proc#binding is not supported
+  fails "Kernel#eval can be aliased"
+  fails "Kernel#eval does not make Proc locals visible to evaluated code" # Expected NameError but got: RuntimeError (Evaluation on a Proc#binding is not supported)
+  fails "Kernel#eval does not share locals across eval scopes"
+  fails "Kernel#eval doesn't accept a Proc object as a binding"
+  fails "Kernel#eval evaluates string with given filename and negative linenumber" # NameError: uninitialized constant TOPLEVEL_BINDING
+  fails "Kernel#eval includes file and line information in syntax error"
+  fails "Kernel#eval raises a LocalJumpError if there is no lambda-style closure in the chain"
+  fails "Kernel#eval unwinds through a Proc-style closure and returns from a lambda-style closure in the closure chain"
+  fails "Kernel#eval updates a local in a scope above a surrounding block scope"
+  fails "Kernel#eval updates a local in a scope above when modified in a nested block scope"
+  fails "Kernel#eval updates a local in a surrounding block scope"
+  fails "Kernel#eval updates a local in an enclosing scope"
+  fails "Kernel#eval uses the same scope for local variables when given the same binding"
+  fails "Kernel#eval with a magic encoding comment allows a magic encoding comment and a frozen_string_literal magic comment on the same line in emacs style" # Opal::SyntaxError: unexpected token $end
+  fails "Kernel#eval with a magic encoding comment allows a magic encoding comment and a subsequent frozen_string_literal magic comment" # Opal::SyntaxError: unexpected token $end
+  fails "Kernel#eval with a magic encoding comment allows a shebang line and some spaces before the magic encoding comment" # Opal::SyntaxError: unexpected token $end
+  fails "Kernel#eval with a magic encoding comment allows a shebang line before the magic encoding comment" # Opal::SyntaxError: unexpected token $end
+  fails "Kernel#eval with a magic encoding comment allows an emacs-style magic comment encoding" # Opal::SyntaxError: unexpected token $end
+  fails "Kernel#eval with a magic encoding comment allows spaces before the magic encoding comment" # Opal::SyntaxError: unexpected token $end
+  fails "Kernel#eval with a magic encoding comment ignores the frozen_string_literal magic comment if it appears after a token and warns if $VERBOSE is true" # Expected warning to match: /warning: `frozen_string_literal' is ignored after any tokens/ but got: ""
+  fails "Kernel#eval with a magic encoding comment ignores the magic encoding comment if it is after a frozen_string_literal magic comment" # Opal::SyntaxError: unexpected token $end
+  fails "Kernel#eval with a magic encoding comment uses the magic comment encoding for parsing constants" # Opal::SyntaxError: unexpected token $end
+  fails "Kernel#eval with refinements activates refinements from the binding" # NoMethodError: undefined method `foo' for #<EvalSpecs::A:0x26588>
+  fails "Kernel#eval with refinements activates refinements from the eval scope" # NoMethodError: undefined method `foo' for #<EvalSpecs::A:0x26698>
+  fails "Kernel#extend does not calls append_features on arguments metaclass"
+  fails "Kernel#extend raises an ArgumentError when no arguments given"
+  fails "Kernel#fail accepts an Object with an exception method returning an Exception" # TypeError: exception class/object expected
+  fails "Kernel#freeze freezes an object's singleton class" # Expected false == true to be truthy but was false
+  fails "Kernel#initialize_copy does nothing if the argument is the same as the receiver" # Expected nil.equal? #<Object:0x590> to be truthy but was false
+  fails "Kernel#initialize_copy raises FrozenError if the receiver is frozen" # Expected FrozenError but no exception was raised (nil was returned)
+  fails "Kernel#initialize_copy raises TypeError if the objects are of different class" # Expected TypeError (initialize_copy should take same class object) but no exception was raised (nil was returned)
+  fails "Kernel#inspect returns a String for an object without #class method" # Exception: Maximum call stack size exceeded
+  fails "Kernel#instance_variables immediate values returns the correct array if an instance variable is added"
+  fails "Kernel#is_a? does not take into account `class` method overriding" # TypeError: can't define singleton
+  fails "Kernel#kind_of? does not take into account `class` method overriding" # TypeError: can't define singleton
+  fails "Kernel#local_variables is accessible from bindings"
+  fails "Kernel#method can be called even if we only repond_to_missing? method, true"
+  fails "Kernel#method returns a method object if respond_to_missing?(method) is true" # NameError: undefined method `handled_publicly' for class `KernelSpecs::RespondViaMissing'
+  fails "Kernel#method the returned method object if respond_to_missing?(method) calls #method_missing with a Symbol name" # NameError: undefined method `handled_publicly' for class `KernelSpecs::RespondViaMissing'
+  fails "Kernel#method will see an alias of the original method as == when in a derived class"
+  fails "Kernel#methods does not return private singleton methods defined in 'class << self'"
+  fails "Kernel#object_id returns a different value for two Bignum literals"
+  fails "Kernel#object_id returns a different value for two String literals"
+  fails "Kernel#p flushes output if receiver is a File"
+  fails "Kernel#p is not affected by setting $\\, $/ or $,"
+  fails "Kernel#pp lazily loads the 'pp' library and delegates the call to that library" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x4f28>
+  fails "Kernel#print prints $_ when no arguments are given" # Expected:   $stdout: "foo"       got:   $stdout: "" 
+  fails "Kernel#public_method changes the method called for super on a target aliased method"
+  fails "Kernel#public_method raises a NameError if we only repond_to_missing? method, true"
+  fails "Kernel#public_method returns a method object for a valid method"
+  fails "Kernel#public_method returns a method object for a valid singleton method"
+  fails "Kernel#public_method returns a method object if respond_to_missing?(method) is true" # Expected "Done public_method(handled_publicly)" (String) to be an instance of Method
+  fails "Kernel#public_method the returned method object if respond_to_missing?(method) calls #method_missing with a Symbol name" # Expected "Done public_method(handled_publicly)" (String) to be an instance of Method
+  fails "Kernel#public_methods returns a list of names without protected accessible methods in the object"
+  fails "Kernel#public_methods when passed false returns a list of public methods in without its ancestors"
+  fails "Kernel#public_methods when passed nil returns a list of public methods in without its ancestors"
+  fails "Kernel#public_send includes `public_send` in the backtrace when passed a single incorrect argument" # Expected TypeError but got: NoMethodError (undefined method `#<Object:0x3da7a>' for #<MSpecEnv:0x3d9f4>)
+  fails "Kernel#public_send includes `public_send` in the backtrace when passed not enough arguments" # Expected "ArgumentError: [MSpecEnv#__send__] wrong number of arguments(0 for -2)".include? "`public_send'" to be truthy but was false
+  fails "Kernel#puts delegates to $stdout.puts"
+  fails "Kernel#raise accepts a cause keyword argument that overrides the last exception" # NoMethodError: undefined method `cause' for #<RuntimeError: error>
+  fails "Kernel#raise accepts a cause keyword argument that sets the cause" # NoMethodError: undefined method `cause' for #<RuntimeError: error>
+  fails "Kernel#raise passes no arguments to the constructor when given only an exception class" # Expected #<Class:0x4c8> but got: ArgumentError ([#initialize] wrong number of arguments(1 for 0))
+  fails "Kernel#raise raises an ArgumentError when only cause is given" # Expected ArgumentError but got: TypeError (exception class/object expected)
+  fails "Kernel#raise re-raises a previously rescued exception without overwriting the backtrace" # Expected "RuntimeError: raised" to include "ruby/shared/kernel/raise.rb:65:"
+  fails "Kernel#respond_to? throws a type error if argument can't be coerced into a Symbol"
+  fails "Kernel#respond_to_missing? causes #respond_to? to return false if called and returning nil"
+  fails "Kernel#respond_to_missing? causes #respond_to? to return true if called and not returning false"
+  fails "Kernel#singleton_class raises TypeError for Integer" # Expected TypeError but no exception was raised (#<Class:#<Number:0xf7>> was returned)
+  fails "Kernel#singleton_class raises TypeError for Symbol"
+  fails "Kernel#singleton_method find a method defined on the singleton class" # NoMethodError: undefined method `singleton_method' for #<Object:0x39d20>
+  fails "Kernel#singleton_method only looks at singleton methods and not at methods in the class" # Expected NoMethodError to equal NameError
+  fails "Kernel#singleton_method raises a NameError if there is no such method" # Expected NoMethodError to equal NameError
+  fails "Kernel#singleton_method returns a Method which can be called" # NoMethodError: undefined method `singleton_method' for #<Object:0x39d1a>
+  fails "Kernel#singleton_methods when not passed an argument does not return any included methods for a class including a module"
+  fails "Kernel#singleton_methods when not passed an argument does not return any included methods for a module including a module"
+  fails "Kernel#singleton_methods when not passed an argument does not return private singleton methods for an object extended with a module including a module" # NoMethodError: undefined method `singleton_methods' for #<MockObject:0x104d6>
+  fails "Kernel#singleton_methods when not passed an argument for a module does not return methods in a module prepended to Module itself" # NoMethodError: undefined method `singleton_methods' for SingletonMethodsSpecs::SelfExtending
+  fails "Kernel#singleton_methods when not passed an argument returns a unique list for a subclass including a module"
+  fails "Kernel#singleton_methods when not passed an argument returns a unique list for a subclass"
+  fails "Kernel#singleton_methods when not passed an argument returns a unique list for an object extended with a module"
+  fails "Kernel#singleton_methods when not passed an argument returns an empty Array for an object with no singleton methods"
+  fails "Kernel#singleton_methods when not passed an argument returns the names of class methods for a class"
+  fails "Kernel#singleton_methods when not passed an argument returns the names of inherited singleton methods for a class extended with a module"
+  fails "Kernel#singleton_methods when not passed an argument returns the names of inherited singleton methods for a subclass including a module"
+  fails "Kernel#singleton_methods when not passed an argument returns the names of inherited singleton methods for a subclass of a class including a module"
+  fails "Kernel#singleton_methods when not passed an argument returns the names of inherited singleton methods for a subclass of a class that includes a module, where the subclass also includes a module"
+  fails "Kernel#singleton_methods when not passed an argument returns the names of inherited singleton methods for a subclass"
+  fails "Kernel#singleton_methods when not passed an argument returns the names of module methods for a module"
+  fails "Kernel#singleton_methods when not passed an argument returns the names of singleton methods for an object extended with a module including a module" # NoMethodError: undefined method `singleton_methods' for #<MockObject:0x104da>
+  fails "Kernel#singleton_methods when not passed an argument returns the names of singleton methods for an object extended with a module" # NoMethodError: undefined method `singleton_methods' for #<MockObject:0x104e2>
+  fails "Kernel#singleton_methods when not passed an argument returns the names of singleton methods for an object extended with two modules" # NoMethodError: undefined method `singleton_methods' for #<MockObject:0x104de>
+  fails "Kernel#singleton_methods when not passed an argument returns the names of singleton methods for an object"
+  fails "Kernel#singleton_methods when passed false does not return any included methods for a class including a module"
+  fails "Kernel#singleton_methods when passed false does not return any included methods for a module including a module"
+  fails "Kernel#singleton_methods when passed false does not return names of inherited singleton methods for a subclass"
+  fails "Kernel#singleton_methods when passed false does not return private singleton methods for an object extended with a module including a module" # NoMethodError: undefined method `singleton_methods' for #<MockObject:0x104fe>
+  fails "Kernel#singleton_methods when passed false does not return the names of inherited singleton methods for a class extended with a module"
+  fails "Kernel#singleton_methods when passed false for a module does not return methods in a module prepended to Module itself" # NoMethodError: undefined method `singleton_methods' for SingletonMethodsSpecs::SelfExtending
+  fails "Kernel#singleton_methods when passed false returns an empty Array for an object extended with a module including a module"
+  fails "Kernel#singleton_methods when passed false returns an empty Array for an object extended with a module" # NoMethodError: undefined method `singleton_methods' for #<MockObject:0x104fa>
+  fails "Kernel#singleton_methods when passed false returns an empty Array for an object extended with two modules" # NoMethodError: undefined method `singleton_methods' for #<MockObject:0x104f6>
+  fails "Kernel#singleton_methods when passed false returns an empty Array for an object with no singleton methods"
+  fails "Kernel#singleton_methods when passed false returns the names of class methods for a class"
+  fails "Kernel#singleton_methods when passed false returns the names of module methods for a module"
+  fails "Kernel#singleton_methods when passed false returns the names of singleton methods for an object"
+  fails "Kernel#singleton_methods when passed false returns the names of singleton methods of the subclass"
+  fails "Kernel#singleton_methods when passed true does not return any included methods for a class including a module"
+  fails "Kernel#singleton_methods when passed true does not return any included methods for a module including a module"
+  fails "Kernel#singleton_methods when passed true does not return private singleton methods for an object extended with a module including a module" # NoMethodError: undefined method `singleton_methods' for #<MockObject:0x104e6>
+  fails "Kernel#singleton_methods when passed true for a module does not return methods in a module prepended to Module itself" # NoMethodError: undefined method `singleton_methods' for SingletonMethodsSpecs::SelfExtending
+  fails "Kernel#singleton_methods when passed true returns a unique list for a subclass including a module"
+  fails "Kernel#singleton_methods when passed true returns a unique list for a subclass"
+  fails "Kernel#singleton_methods when passed true returns a unique list for an object extended with a module"
+  fails "Kernel#singleton_methods when passed true returns an empty Array for an object with no singleton methods"
+  fails "Kernel#singleton_methods when passed true returns the names of class methods for a class"
+  fails "Kernel#singleton_methods when passed true returns the names of inherited singleton methods for a class extended with a module"
+  fails "Kernel#singleton_methods when passed true returns the names of inherited singleton methods for a subclass including a module"
+  fails "Kernel#singleton_methods when passed true returns the names of inherited singleton methods for a subclass of a class including a module"
+  fails "Kernel#singleton_methods when passed true returns the names of inherited singleton methods for a subclass of a class that includes a module, where the subclass also includes a module"
+  fails "Kernel#singleton_methods when passed true returns the names of inherited singleton methods for a subclass"
+  fails "Kernel#singleton_methods when passed true returns the names of module methods for a module"
+  fails "Kernel#singleton_methods when passed true returns the names of singleton methods for an object extended with a module including a module" # NoMethodError: undefined method `singleton_methods' for #<MockObject:0x104f2>
+  fails "Kernel#singleton_methods when passed true returns the names of singleton methods for an object extended with a module" # NoMethodError: undefined method `singleton_methods' for #<MockObject:0x104ee>
+  fails "Kernel#singleton_methods when passed true returns the names of singleton methods for an object extended with two modules" # NoMethodError: undefined method `singleton_methods' for #<MockObject:0x104ea>
+  fails "Kernel#singleton_methods when passed true returns the names of singleton methods for an object"
+  fails "Kernel#sleep accepts any Object that reponds to divmod" # TypeError: can't convert Object into time interval
+  fails "Kernel#sprintf can produce a string with invalid encoding" # Expected true to be false
+  fails "Kernel#sprintf flags # applies to format o does nothing for negative argument" # Expected "0..7651" to equal "..7651"
+  fails "Kernel#sprintf flags # applies to formats aAeEfgG changes format from dd.dddd to exponential form for gG" # Expected "1.234e+02" to equal "1.e+02"
+  fails "Kernel#sprintf flags # applies to formats aAeEfgG forces a decimal point to be added, even if no digits follow" # NotImplementedError: `A` and `a` format field types are not implemented in Opal yet
+  fails "Kernel#sprintf flags (digit)$ specifies the absolute argument number for this field" # NotImplementedError: `A` and `a` format field types are not implemented in Opal yet
+  fails "Kernel#sprintf flags * left-justifies the result if specified with $ argument is negative" # Expected "1.095200e+2         " to equal "1.095200e+02        "
+  fails "Kernel#sprintf flags * left-justifies the result if width is negative" # Expected "1.095200e+2         " to equal "1.095200e+02        "
+  fails "Kernel#sprintf flags * raises ArgumentError when is mixed with width" # Expected ArgumentError but no exception was raised ("       112" was returned)
+  fails "Kernel#sprintf flags * uses the previous argument as the field width" # Expected "         1.095200e+02" to equal "        1.095200e+02"
+  fails "Kernel#sprintf flags * uses the specified argument as the width if * is followed by a number and $" # Expected "         1.095200e+02" to equal "        1.095200e+02"
+  fails "Kernel#sprintf flags + applies to numeric formats bBdiouxXaAeEfgG adds a leading plus sign to non-negative numbers" # NotImplementedError: `A` and `a` format field types are not implemented in Opal yet
+  fails "Kernel#sprintf flags - left-justifies the result of conversion if width is specified" # Expected "1.095200e+2         " to equal "1.095200e+02        "
+  fails "Kernel#sprintf flags 0 (zero) applies to numeric formats bBdiouxXaAeEfgG and width is specified pads with zeros, not spaces" # Expected "0000000001.095200e+02" to equal "000000001.095200e+02"
+  fails "Kernel#sprintf flags space applies to numeric formats bBdiouxXeEfgGaA does not leave a space at the start of negative numbers" # NotImplementedError: `A` and `a` format field types are not implemented in Opal yet
+  fails "Kernel#sprintf flags space applies to numeric formats bBdiouxXeEfgGaA leaves a space at the start of non-negative numbers" # NotImplementedError: `A` and `a` format field types are not implemented in Opal yet
+  fails "Kernel#sprintf flags space applies to numeric formats bBdiouxXeEfgGaA treats several white spaces as one" # NotImplementedError: `A` and `a` format field types are not implemented in Opal yet
+  fails "Kernel#sprintf float formats A converts floating point argument as [-]0xh.hhhhp[+-]dd and use uppercase X and P" # NotImplementedError: `A` and `a` format field types are not implemented in Opal yet
+  fails "Kernel#sprintf float formats A displays Float::INFINITY as Inf" # NotImplementedError: `A` and `a` format field types are not implemented in Opal yet
+  fails "Kernel#sprintf float formats A displays Float::NAN as NaN" # NotImplementedError: `A` and `a` format field types are not implemented in Opal yet
+  fails "Kernel#sprintf float formats G otherwise cuts excessive digits in fractional part and keeps only 4 ones" # Expected "12.12341111" to equal "12.1234"
+  fails "Kernel#sprintf float formats G otherwise cuts fraction part to have only 6 digits at all" # Expected "1.1234567" to equal "1.12346"
+  fails "Kernel#sprintf float formats G otherwise rounds the last significant digit to the closest one in fractional part" # Expected "1.555555555" to equal "1.55556"
+  fails "Kernel#sprintf float formats G the exponent is greater than or equal to the precision (6 by default) converts a floating point number using exponential form" # Expected "1.234567E+06" to equal "1.23457E+06"
+  fails "Kernel#sprintf float formats a converts floating point argument as [-]0xh.hhhhp[+-]dd" # NotImplementedError: `A` and `a` format field types are not implemented in Opal yet
+  fails "Kernel#sprintf float formats a displays Float::INFINITY as Inf" # NotImplementedError: `A` and `a` format field types are not implemented in Opal yet
+  fails "Kernel#sprintf float formats a displays Float::NAN as NaN" # NotImplementedError: `A` and `a` format field types are not implemented in Opal yet
+  fails "Kernel#sprintf float formats g otherwise cuts excessive digits in fractional part and keeps only 4 ones" # Expected "12.12341111" to equal "12.1234"
+  fails "Kernel#sprintf float formats g otherwise cuts fraction part to have only 6 digits at all" # Expected "1.1234567" to equal "1.12346"
+  fails "Kernel#sprintf float formats g otherwise rounds the last significant digit to the closest one in fractional part" # Expected "1.555555555" to equal "1.55556"
+  fails "Kernel#sprintf float formats g the exponent is greater than or equal to the precision (6 by default) converts a floating point number using exponential form" # Expected "1.234567e+06" to equal "1.23457e+06"
+  fails "Kernel#sprintf integer formats d works well with large numbers" # Expected "1234567890987654400" to equal "1234567890987654321"
+  fails "Kernel#sprintf integer formats i works well with large numbers" # Expected "1234567890987654400" to equal "1234567890987654321"
+  fails "Kernel#sprintf integer formats u works well with large numbers" # Expected "1234567890987654400" to equal "1234567890987654321"
+  fails "Kernel#sprintf other formats % alone raises an ArgumentError" # Expected ArgumentError but no exception was raised ("%" was returned)
+  fails "Kernel#sprintf other formats s preserves encoding of the format string" # Expected #<Encoding:UTF-8> == #<Encoding:ASCII-8BIT (dummy)> to be truthy but was false
+  fails "Kernel#sprintf precision float types controls the number of decimal places displayed in fraction part" # NotImplementedError: `A` and `a` format field types are not implemented in Opal yet
+  fails "Kernel#sprintf precision float types does not affect G format" # Expected "12.12340000" to equal "12.1234"
+  fails "Kernel#sprintf precision string formats determines the maximum number of characters to be copied from the string" # Expected "1" to equal "["
+  fails "Kernel#sprintf raises Encoding::CompatibilityError if both encodings are ASCII compatible and there ano not ASCII characters" # ArgumentError: unknown encoding name - windows-1252
+  fails "Kernel#sprintf width specifies the minimum number of characters that will be written to the result" # Expected "         1.095200e+02" to equal "        1.095200e+02"
+  fails "Kernel#warn :uplevel keyword argument converts first arg using to_s" # Expected:   $stderr: /core\/kernel\/fixtures\/classes.rb:441: warning: false/       got:   $stderr: "ruby/core/kernel/fixtures/classes.rb:441:7:in `warn': warning: false\n"
+  fails "Kernel#warn :uplevel keyword argument converts value to Integer" # TypeError: no implicit conversion of Number into Integer
+  fails "Kernel#warn :uplevel keyword argument prepends a message with specified line from the backtrace" # Expected:   $stderr: /core\/kernel\/fixtures\/classes.rb:441: warning: foo/       got:   $stderr: "ruby/core/kernel/fixtures/classes.rb:441:7:in `warn': warning: foo\n"
+  fails "Kernel#warn :uplevel keyword argument prepends even if a message is empty or nil" # Expected:   $stderr: /core\/kernel\/fixtures\/classes.rb:441: warning: \n$/       got:   $stderr: "ruby/core/kernel/fixtures/classes.rb:441:7:in `warn': warning: \n"
+  fails "Kernel#warn :uplevel keyword argument raises if :category keyword is not nil and not convertible to symbol" # Expected TypeError but no exception was raised (nil was returned)
+  fails "Kernel#warn :uplevel keyword argument shows the caller of #require and not #require itself with RubyGems loaded" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x28d18>
+  fails "Kernel#warn :uplevel keyword argument shows the caller of #require and not #require itself without RubyGems" # NoMethodError: undefined method `insert' for "rubyexe.rb"
+  fails "Kernel#warn :uplevel keyword argument skips <internal: core library methods defined in Ruby" # NoMethodError: undefined method `insert' for "rubyexe.rb"
+  fails "Kernel#warn avoids recursion if Warning#warn is redefined and calls super" # NoMethodError: undefined method `insert' for "rubyexe.rb"
+  fails "Kernel#warn does not call Warning.warn if self is the Warning module" # NoMethodError: undefined method `insert' for "rubyexe.rb"
+  fails "Kernel#warn writes each array element on a line when passes an array" # Expected:   $stderr: "line 1\nline 2\n"       got:   $stderr: "[\"line 1\", \"li
+  fails "Kernel.Complex() when passed Numerics n1 and n2 and at least one responds to #real? with false returns n1 + n2 * Complex(0, 1)"
+  fails "Kernel.Complex() when passed [Complex, Complex] returns a new Complex number based on the two given numbers"
+  fails "Kernel.Complex() when passed [Complex] returns the passed Complex number"
+  fails "Kernel.Complex() when passed a Numeric which responds to #real? with false returns the passed argument"
+  fails "Kernel.Complex() when passed a non-Numeric second argument raises TypeError"
+  fails "Kernel.Complex() when passed a single non-Numeric coerces the passed argument using #to_c"
+  fails "Kernel.Complex() when passed an Object which responds to #to_c returns the passed argument" # Expected (#<Object:0x332c0>+0i) to equal (0+1i)
+  fails "Kernel.Complex() when passed exception: false and [Numeric] returns a complex number" # Expected #<Complex>(#pretty_inspect raised #<NoMethodError: undefined method `positive?' for {"exception"=>false}>) == (123+0i) to be truthy but was false
+  fails "Kernel.Complex() when passed exception: false and [anything, non-Numeric] argument swallows an error" # ArgumentError: [MSpecEnv#Complex] wrong number of arguments(3 for -2)
+  fails "Kernel.Complex() when passed exception: false and [non-Numeric, Numeric] argument throws a TypeError" # Expected TypeError (not a real) but got: ArgumentError ([MSpecEnv#Complex] wrong number of arguments(3 for -2))
+  fails "Kernel.Complex() when passed exception: false and [non-Numeric] swallows an error" # Expected #<Complex>(#pretty_inspect raised #<NoMethodError: undefined method `positive?' for {"exception"=>false}>) == nil to be truthy but was false
+  fails "Kernel.Complex() when passed exception: false and nil arguments swallows an error" # Expected #<Complex>(#pretty_inspect raised #<NoMethodError: undefined method `positive?' for {"exception"=>false}>) == nil to be truthy but was false
+  fails "Kernel.Complex() when passed exception: false and non-numeric String arguments swallows an error" # ArgumentError: [MSpecEnv#Complex] wrong number of arguments(3 for -2)
+  fails "Kernel.Complex() when passed nil raises TypeError" # Expected TypeError (can't convert nil into Complex) but no exception was raised ((nil+0i) was returned)
+  fails "Kernel.Float for hexadecimal literals with binary exponent allows embedded _ in a number on either side of the P"
+  fails "Kernel.Float for hexadecimal literals with binary exponent allows embedded _ in a number on either side of the p"
+  fails "Kernel.Float for hexadecimal literals with binary exponent allows hexadecimal points on the left side of the 'P'"
+  fails "Kernel.Float for hexadecimal literals with binary exponent allows hexadecimal points on the left side of the 'p'"
+  fails "Kernel.Float for hexadecimal literals with binary exponent interprets the exponent (on the right of 'P') in decimal"
+  fails "Kernel.Float for hexadecimal literals with binary exponent interprets the exponent (on the right of 'p') in decimal"
+  fails "Kernel.Float for hexadecimal literals with binary exponent interprets the fractional part (on the left side of 'P') in hexadecimal"
+  fails "Kernel.Float for hexadecimal literals with binary exponent interprets the fractional part (on the left side of 'p') in hexadecimal"
+  fails "Kernel.Float for hexadecimal literals with binary exponent returns 0 for '0x1P-10000'"
+  fails "Kernel.Float for hexadecimal literals with binary exponent returns 0 for '0x1p-10000'"
+  fails "Kernel.Float for hexadecimal literals with binary exponent returns Infinity for '0x1P10000'"
+  fails "Kernel.Float for hexadecimal literals with binary exponent returns Infinity for '0x1p10000'"
+  fails "Kernel.Float when passed exception: false and invalid input swallows an error" # ArgumentError: [Kernel.Float] wrong number of arguments(2 for 1)
+  fails "Kernel.Float when passed exception: false and nil swallows it" # ArgumentError: [Kernel.Float] wrong number of arguments(2 for 1)
+  fails "Kernel.Float when passed exception: false and valid input returns a Float number" # ArgumentError: [Kernel.Float] wrong number of arguments(2 for 1)
+  fails "Kernel.Integer raises a TypeError when to_int returns not-an-Integer object and to_i returns nil" # Expected TypeError but no exception was raised ("1" was returned)
+  fails "Kernel.Integer return a result of to_i when to_int does not return an Integer" # Expected "1" == 42 to be truthy but was false
+  fails "Kernel.Integer when passed exception: false and an argument that contains a period swallows an error" # TypeError: no implicit conversion of Hash into Integer
+  fails "Kernel.Integer when passed exception: false and an empty string swallows an error" # TypeError: no implicit conversion of Hash into Integer
+  fails "Kernel.Integer when passed exception: false and invalid argument swallows an error" # ArgumentError: [MSpecEnv#Integer] wrong number of arguments(3 for -2)
+  fails "Kernel.Integer when passed exception: false and multiple leading -s swallows an error" # TypeError: no implicit conversion of Hash into Integer
+  fails "Kernel.Integer when passed exception: false and multiple trailing -s swallows an error" # TypeError: no implicit conversion of Hash into Integer
+  fails "Kernel.Integer when passed exception: false and no to_int or to_i methods exist swallows an error" # ArgumentError: base specified for non string value
+  fails "Kernel.Integer when passed exception: false and passed Infinity swallows an error" # ArgumentError: base specified for non string value
+  fails "Kernel.Integer when passed exception: false and passed NaN swallows an error" # ArgumentError: base specified for non string value
+  fails "Kernel.Integer when passed exception: false and passed a String that can't be converted to an Integer swallows an error" # TypeError: no implicit conversion of Hash into Integer
+  fails "Kernel.Integer when passed exception: false and passed a String that contains numbers normally parses it and returns an Integer" # TypeError: no implicit conversion of Hash into Integer
+  fails "Kernel.Integer when passed exception: false and passed nil swallows an error" # ArgumentError: base specified for non string value
+  fails "Kernel.Integer when passed exception: false and to_i returns a value that is not an Integer swallows an error" # ArgumentError: base specified for non string value
+  fails "Kernel.Integer when passed exception: false and to_int returns nil and no to_i exists swallows an error" # ArgumentError: base specified for non string value
+  fails "Kernel.Integer when passed exception: false and valid argument returns an Integer number" # ArgumentError: [MSpecEnv#Integer] wrong number of arguments(3 for -2)
+  fails "Kernel.Rational when passed a String converts the String to a Rational using the same method as String#to_r"
+  fails "Kernel.Rational when passed a String does not use the same method as Float#to_r"
+  fails "Kernel.Rational when passed a String raises a TypeError if the first argument is a Symbol"
+  fails "Kernel.Rational when passed a String raises a TypeError if the second argument is a Symbol"
+  fails "Kernel.Rational when passed a String scales the Rational value of the first argument by the Rational value of the second"
+  fails "Kernel.Rational when passed a String when passed a Numeric calls #to_r to convert the first argument to a Rational"
+  fails "Kernel.Rational when passed exception: false and [anything, non-Numeric] swallows an error" # ArgumentError: [MSpecEnv#Rational] wrong number of arguments(3 for -2)
+  fails "Kernel.Rational when passed exception: false and [non-Numeric, Numeric] swallows an error" # ArgumentError: [MSpecEnv#Rational] wrong number of arguments(3 for -2)
+  fails "Kernel.Rational when passed exception: false and [non-Numeric] swallows an error" # NoMethodError: undefined method `to_i' for {"exception"=>false}
+  fails "Kernel.Rational when passed exception: false and nil arguments swallows an error" # TypeError: cannot convert nil into Rational
+  fails "Kernel.Rational when passed exception: false and non-Numeric String arguments swallows an error" # ArgumentError: [MSpecEnv#Rational] wrong number of arguments(3 for -2)
+  fails "Kernel.String calls #to_s if #respond_to?(:to_s) returns true" # TypeError: no implicit conversion of MockObject into String
+  fails "Kernel.String raises a TypeError if #to_s is not defined, even though #respond_to?(:to_s) returns true"
+  fails "Kernel.__callee__ returns method name even from eval"
+  fails "Kernel.__callee__ returns method name even from send"
+  fails "Kernel.__callee__ returns the aliased name when aliased method"
+  fails "Kernel.__callee__ returns the caller from a define_method called from the same class"
+  fails "Kernel.__callee__ returns the caller from block inside define_method too"
+  fails "Kernel.__callee__ returns the caller from blocks too"
+  fails "Kernel.__callee__ returns the caller from define_method too"
+  fails "Kernel.__method__ returns method name even from eval"
+  fails "Kernel.__method__ returns method name even from send"
+  fails "Kernel.__method__ returns the caller from block inside define_method too"
+  fails "Kernel.__method__ returns the caller from blocks too"
+  fails "Kernel.__method__ returns the caller from define_method too"
+  fails "Kernel.autoload calls #to_path on non-String filenames" # Mock 'path' expected to receive to_path("any_args") exactly 1 times but received it 0 times
+  fails "Kernel.autoload when called from included module's method setups the autoload on the included module" # NoMethodError: undefined method `autoload?' for KernelSpecs::AutoloadMethod2
+  fails "Kernel.autoload when called from included module's method the autoload relative to the included module works" # NameError: uninitialized constant KernelSpecs::AutoloadMethod2::AutoloadFromIncludedModule2
+  fails "Kernel.global_variables finds subset starting with std"
+  fails "Kernel.lambda does not create lambda-style Procs when captured with #method" # Expected true to be false
+  fails "Kernel.lambda raises an ArgumentError when no block is given"
+  fails "Kernel.lambda returns from the lambda itself, not the creation site of the lambda"
+  fails "Kernel.lambda returns the passed Proc if given an existing Proc through super" # Expected true to be false
+  fails "Kernel.lambda returns the passed Proc if given an existing Proc" # Expected true to be false
+  fails "Kernel.lambda treats the block as a Proc when lambda is re-defined" # Expected 2 == 1 to be truthy but was false
+  fails "Kernel.loop returns StopIteration#result, the result value of a finished iterator" # requires changes in enumerator.rb
+  fails "Kernel.printf calls write on the first argument when it is not a string"
+  fails "Kernel.printf formatting io is not specified other formats s preserves encoding of the format string" # Expected #<Encoding:UTF-8> == #<Encoding:ASCII-8BIT (dummy)> to be truthy but was false
+  fails "Kernel.printf formatting io is specified other formats s preserves encoding of the format string" # Expected #<Encoding:UTF-8> == #<Encoding:ASCII-8BIT (dummy)> to be truthy but was false
+  fails "Kernel.printf writes to stdout when a string is the first argument"
+  fails "Kernel.proc returned the passed Proc if given an existing Proc" # Expected false to be true
+  fails "Kernel.rand is random on boot" # NoMethodError: undefined method `insert' for "rubyexe.rb"
+  fails "Kernel.rand supports custom object types" # Expected "NaN#<struct KernelSpecs::CustomRangeInteger value=1>" (String) to be an instance of KernelSpecs::CustomRangeInteger
+  fails "Kernel.sprintf can produce a string with invalid encoding" # Expected true to be false
+  fails "Kernel.sprintf flags # applies to format o does nothing for negative argument" # Expected "0..7651" to equal "..7651"
+  fails "Kernel.sprintf flags # applies to formats aAeEfgG changes format from dd.dddd to exponential form for gG" # Expected "1.234e+02" to equal "1.e+02"
+  fails "Kernel.sprintf flags # applies to formats aAeEfgG forces a decimal point to be added, even if no digits follow" # NotImplementedError: `A` and `a` format field types are not implemented in Opal yet
+  fails "Kernel.sprintf flags (digit)$ specifies the absolute argument number for this field" # NotImplementedError: `A` and `a` format field types are not implemented in Opal yet
+  fails "Kernel.sprintf flags * left-justifies the result if specified with $ argument is negative" # Expected "1.095200e+2         " to equal "1.095200e+02        "
+  fails "Kernel.sprintf flags * left-justifies the result if width is negative" # Expected "1.095200e+2         " to equal "1.095200e+02        "
+  fails "Kernel.sprintf flags * raises ArgumentError when is mixed with width" # Expected ArgumentError but no exception was raised ("       112" was returned)
+  fails "Kernel.sprintf flags * uses the previous argument as the field width" # Expected "         1.095200e+02" to equal "        1.095200e+02"
+  fails "Kernel.sprintf flags * uses the specified argument as the width if * is followed by a number and $" # Expected "         1.095200e+02" to equal "        1.095200e+02"
+  fails "Kernel.sprintf flags + applies to numeric formats bBdiouxXaAeEfgG adds a leading plus sign to non-negative numbers" # NotImplementedError: `A` and `a` format field types are not implemented in Opal yet
+  fails "Kernel.sprintf flags - left-justifies the result of conversion if width is specified" # Expected "1.095200e+2         " to equal "1.095200e+02        "
+  fails "Kernel.sprintf flags 0 (zero) applies to numeric formats bBdiouxXaAeEfgG and width is specified pads with zeros, not spaces" # Expected "0000000001.095200e+02" to equal "000000001.095200e+02"
+  fails "Kernel.sprintf flags space applies to numeric formats bBdiouxXeEfgGaA does not leave a space at the start of negative numbers" # NotImplementedError: `A` and `a` format field types are not implemented in Opal yet
+  fails "Kernel.sprintf flags space applies to numeric formats bBdiouxXeEfgGaA leaves a space at the start of non-negative numbers" # NotImplementedError: `A` and `a` format field types are not implemented in Opal yet
+  fails "Kernel.sprintf flags space applies to numeric formats bBdiouxXeEfgGaA treats several white spaces as one" # NotImplementedError: `A` and `a` format field types are not implemented in Opal yet
+  fails "Kernel.sprintf float formats A converts floating point argument as [-]0xh.hhhhp[+-]dd and use uppercase X and P" # NotImplementedError: `A` and `a` format field types are not implemented in Opal yet
+  fails "Kernel.sprintf float formats A displays Float::INFINITY as Inf" # NotImplementedError: `A` and `a` format field types are not implemented in Opal yet
+  fails "Kernel.sprintf float formats A displays Float::NAN as NaN" # NotImplementedError: `A` and `a` format field types are not implemented in Opal yet
+  fails "Kernel.sprintf float formats G otherwise cuts excessive digits in fractional part and keeps only 4 ones" # Expected "12.12341111" to equal "12.1234"
+  fails "Kernel.sprintf float formats G otherwise cuts fraction part to have only 6 digits at all" # Expected "1.1234567" to equal "1.12346"
+  fails "Kernel.sprintf float formats G otherwise rounds the last significant digit to the closest one in fractional part" # Expected "1.555555555" to equal "1.55556"
+  fails "Kernel.sprintf float formats G the exponent is greater than or equal to the precision (6 by default) converts a floating point number using exponential form" # Expected "1.234567E+06" to equal "1.23457E+06"
+  fails "Kernel.sprintf float formats a converts floating point argument as [-]0xh.hhhhp[+-]dd" # NotImplementedError: `A` and `a` format field types are not implemented in Opal yet
+  fails "Kernel.sprintf float formats a displays Float::INFINITY as Inf" # NotImplementedError: `A` and `a` format field types are not implemented in Opal yet
+  fails "Kernel.sprintf float formats a displays Float::NAN as NaN" # NotImplementedError: `A` and `a` format field types are not implemented in Opal yet
+  fails "Kernel.sprintf float formats g otherwise cuts excessive digits in fractional part and keeps only 4 ones" # Expected "12.12341111" to equal "12.1234"
+  fails "Kernel.sprintf float formats g otherwise cuts fraction part to have only 6 digits at all" # Expected "1.1234567" to equal "1.12346"
+  fails "Kernel.sprintf float formats g otherwise rounds the last significant digit to the closest one in fractional part" # Expected "1.555555555" to equal "1.55556"
+  fails "Kernel.sprintf float formats g the exponent is greater than or equal to the precision (6 by default) converts a floating point number using exponential form" # Expected "1.234567e+06" to equal "1.23457e+06"
+  fails "Kernel.sprintf integer formats d works well with large numbers" # Expected "1234567890987654400" to equal "1234567890987654321"
+  fails "Kernel.sprintf integer formats i works well with large numbers" # Expected "1234567890987654400" to equal "1234567890987654321"
+  fails "Kernel.sprintf integer formats u works well with large numbers" # Expected "1234567890987654400" to equal "1234567890987654321"
+  fails "Kernel.sprintf other formats % alone raises an ArgumentError" # Expected ArgumentError but no exception was raised ("%" was returned)
+  fails "Kernel.sprintf other formats s preserves encoding of the format string" # Expected #<Encoding:UTF-8> == #<Encoding:ASCII-8BIT (dummy)> to be truthy but was false
+  fails "Kernel.sprintf precision float types controls the number of decimal places displayed in fraction part" # NotImplementedError: `A` and `a` format field types are not implemented in Opal yet
+  fails "Kernel.sprintf precision float types does not affect G format" # Expected "12.12340000" to equal "12.1234"
+  fails "Kernel.sprintf precision string formats determines the maximum number of characters to be copied from the string" # Expected "1" to equal "["
+  fails "Kernel.sprintf raises Encoding::CompatibilityError if both encodings are ASCII compatible and there ano not ASCII characters" # ArgumentError: unknown encoding name - windows-1252
+  fails "Kernel.sprintf returns a String in the same encoding as the format String if compatible" # NameError: uninitialized constant Encoding::KOI8_U
+  fails "Kernel.sprintf width specifies the minimum number of characters that will be written to the result" # Expected "         1.095200e+02" to equal "        1.095200e+02"
+  fails "Kernel.srand returns the previous seed value on the first call" # NoMethodError: undefined method `insert' for "rubyexe.rb"
+  fails_badly "Kernel#autoload registers a file to load the first time the named constant is accessed" # NoMethodError: undefined method `autoload?' for #<MSpecEnv:0x5b168>
+end
diff --git a/spec/filters/bugs/language.rb b/spec/filters/bugs/language.rb
new file mode 100644
index 00000000..9c3adcfd
--- /dev/null
+++ b/spec/filters/bugs/language.rb
@@ -0,0 +1,324 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "language" do
+  fails "$LOAD_PATH.resolve_feature_path return nil if feature cannot be found" # NoMethodError: undefined method `resolve_feature_path' for ["foo"]
+  fails "$LOAD_PATH.resolve_feature_path returns what will be loaded without actual loading, .rb file" # NoMethodError: undefined method `resolve_feature_path' for ["foo"]
+  fails "$LOAD_PATH.resolve_feature_path returns what will be loaded without actual loading, .so file" # NoMethodError: undefined method `resolve_feature_path' for ["foo"]
+  fails "A Proc taking |*a, **kw| arguments does not autosplat keyword arguments" # Expected [[1], {"a"=>1}] == [[[1, {"a"=>1}]], {}] to be truthy but was false
+  fails "A Symbol literal with invalid bytes raises an EncodingError at parse time" # Actually passes, the error comes from the difference between MRI's opal and compiled opal-parser
+  fails "A block yielded a single Array assigns elements to mixed argument types" # Expected [1, 2, [], 3, 2, {"x"=>9}] == [1, 2, [3], {"x"=>9}, 2, {}] to be truthy but was false
+  fails "A block yielded a single Array assigns elements to required arguments when a keyword rest argument is present"
+  fails "A block yielded a single Array does not call #to_hash on final argument to get keyword arguments and does not autosplat" # ArgumentError: expected kwargs
+  fails "A block yielded a single Array does not call #to_hash on the argument when optional argument and keyword argument accepted and does not autosplat" # ArgumentError: expected kwargs
+  fails "A block yielded a single Array does not call #to_hash on the last element if keyword arguments are present" # ArgumentError: expected kwargs
+  fails "A block yielded a single Array does not call #to_hash on the last element when there are more arguments than parameters" # ArgumentError: expected kwargs
+  fails "A block yielded a single Array does not treat final Hash as keyword arguments and does not autosplat" # Expected [nil, {"a"=>10}] == [[{"a"=>10}], {}] to be truthy but was false
+  fails "A block yielded a single Array does not treat hashes with string keys as keyword arguments and does not autosplat" # Expected [nil, {"a"=>10}] == [[{"a"=>10}], {}] to be truthy but was false
+  fails "A block yielded a single Array when non-symbol keys are in a keyword arguments Hash does not separate non-symbol keys and symbol keys and does not autosplat" # Expected [nil, {"a"=>10, "b"=>2}] == [[{"a"=>10, "b"=>2}], {}] to be truthy but was false
+  fails "A class definition extending an object (sclass) can use return to cause the enclosing method to return"
+  fails "A class definition extending an object (sclass) raises a TypeError when trying to extend numbers"
+  fails "A class definition raises TypeError if any constant qualifying the class is not a Module"
+  fails "A class definition raises TypeError if the constant qualifying the class is nil"
+  fails "A class definition raises a TypeError if inheriting from a metaclass"
+  fails "A lambda expression 'lambda { ... }' assigns variables from parameters for definition '@a = lambda { |*, **k| k }'" # ArgumentError: expected kwargs
+  fails "A lambda expression 'lambda { ... }' assigns variables from parameters for definition \n    def m(a) yield a end\n    def m2() yield end\n    @a = lambda { |a, | a }"
+  fails "A lambda expression 'lambda { ... }' requires a block"
+  fails "A lambda expression 'lambda { ... }' with an implicit block raises ArgumentError" # Expected ArgumentError (/tried to create Proc object without a block/) but no exception was raised (nil was returned)
+  fails "A lambda literal -> () { } assigns variables from parameters for definition '@a = -> (*, **k) { k }'" # ArgumentError: expected kwargs
+  fails "A method assigns local variables from method parameters for definition 'def m() end'" # ArgumentError: [SpecEvaluate#m] wrong number of arguments(1 for 0)
+  fails "A method assigns local variables from method parameters for definition 'def m(*a) a end'" # Expected [{}] to equal []
+  fails "A method assigns local variables from method parameters for definition 'def m(a, **) a end'" # Expected ArgumentError but no exception was raised ({"a"=>1, "b"=>2} was returned)
+  fails "A method assigns local variables from method parameters for definition 'def m(a, **k) [a, k] end'" # Expected ArgumentError but no exception was raised ([{"a"=>1, "b"=>2}, {}] was returned)
+  fails "A method assigns local variables from method parameters for definition 'def m(a, **nil); a end;'" # Opal::SyntaxError: Unsupported arg type kwnilarg
+  fails "A method assigns local variables from method parameters for definition 'def m(a, b: 1) [a, b] end'" # Expected ArgumentError but no exception was raised ([{"a"=>1, "b"=>2}, 1] was returned)
+  fails "A method assigns local variables from method parameters for definition 'def m(a:) a end'"
+  fails "A method assigns local variables from method parameters for definition 'def m(a:, **k) [a, k] end'"
+  fails "A method assigns local variables from method parameters for definition 'def m(a:, b: 1) [a, b] end'"
+  fails "A method assigns local variables from method parameters for definition 'def m(a:, b:) [a, b] end'"
+  fails "A method assigns local variables from method parameters for definition 'def m(a=1, b: 2) [a, b] end'"
+  fails "A method assigns local variables from method parameters for definition 'def m(a=1, b:) [a, b] end'"
+  fails "A method assigns local variables from method parameters for definition \n    def m(a, b = nil, c = nil, d, e: nil, **f)\n      [a, b, c, d, e, f]\n    end" # Exception: Cannot read property '$$is_array' of undefined
+  fails "A method assigns the last Hash to the last optional argument if the Hash contains non-Symbol keys and is not passed as keywords" # Exception: Object.defineProperty called on non-object
+  fails "A method definition in an eval creates a class method"
+  fails "A method definition in an eval creates an instance method"
+  fails "A method raises ArgumentError if passing hash as keyword arguments for definition 'def m(a: nil); a; end'" # Expected ArgumentError but no exception was raised (1 was returned)
+  fails "A method when passing an empty keyword splat to a method that does not accept keywords for definition 'def m(*a); a; end'" # Expected [{}] == [] to be truthy but was false
+  fails "A method when passing an empty keyword splat to a method that does not accept keywords for definition 'def m(a); a; end'" # Expected ArgumentError but no exception was raised (nil was returned)
+  fails "A nested method definition creates a class method when evaluated in a class method"
+  fails "A nested method definition creates a method in the surrounding context when evaluated in a def expr.method"
+  fails "A nested method definition creates an instance method inside Class.new" # NoMethodError: undefined method `new_def' for #<#<Class:0x40de>:0x40dc>
+  fails "A nested method definition creates an instance method when evaluated in an instance method"
+  fails "A number literal can be a decimal literal with trailing 'r' to represent a Rational" # requires String#to_r
+  fails "A number literal can be a float literal with trailing 'r' to represent a Rational" # Expected (5030569068109113/288230376151711740) == (136353847812057/7812500000000000) to be truthy but was false
+  fails "A singleton class doesn't have singleton class"
+  fails "A singleton class raises a TypeError for symbols"
+  fails "A singleton method definition can be declared for a global variable"
+  fails "A singleton method definition raises FrozenError with the correct class name" # Expected FrozenError but no exception was raised ("foo" was returned)
+  fails "Accessing a class variable raises a RuntimeError when a class variable is overtaken in an ancestor class" # Expected RuntimeError (/class variable @@cvar_overtaken of .+ is overtaken by .+/) but no exception was raised ("subclass" was returned)
+  fails "Accessing a class variable raises a RuntimeError when accessed from the toplevel scope (not in some module or class)" # Expected RuntimeError (class variable access from toplevel) but got: NameError (uninitialized class variable @@cvar_toplevel1 in MSpecEnv)
+  fails "Allowed characters allows non-ASCII lowercased characters at the beginning" # Expected nil == 1 to be truthy but was false
+  fails "Allowed characters allows not ASCII upcased characters at the beginning" # NameError: wrong constant name ἍBB
+  fails "Allowed characters does not allow non-ASCII upcased characters at the beginning" # Expected SyntaxError (/dynamic constant assignment/) but no exception was raised ("test" was returned)
+  fails "An ensure block inside 'do end' block is executed even when a symbol is thrown in it's corresponding begin block" # Expected ["begin", "rescue", "ensure"] to equal ["begin", "ensure"]
+  fails "An ensure block inside a begin block is executed even when a symbol is thrown in it's corresponding begin block"
+  fails "An ensure block inside a class is executed even when a symbol is thrown" # Expected ["class", "rescue", "ensure"] to equal ["class", "ensure"]
+  fails "An instance method definition with a splat requires the presence of any arguments that precede the *" # ArgumentError: [MSpecEnv#foo] wrong number of arguments(1 for -3)
+  fails "An instance method raises FrozenError with the correct class name" # Expected FrozenError but no exception was raised (#<Module:0x225b4> was returned)
+  fails "An instance method raises an error with too few arguments" # ArgumentError: [MSpecEnv#foo] wrong number of arguments(1 for 2)
+  fails "An instance method raises an error with too many arguments" # ArgumentError: [MSpecEnv#foo] wrong number of arguments(2 for 1)
+  fails "An instance method with a default argument evaluates the default when required arguments precede it" # ArgumentError: [MSpecEnv#foo] wrong number of arguments(0 for -2)
+  fails "An instance method with a default argument prefers to assign to a default argument before a splat argument" # ArgumentError: [MSpecEnv#foo] wrong number of arguments(0 for -2)
+  fails "Assigning an anonymous module to a constant sets the name of a module scoped by an anonymous module" # NoMethodError: undefined method `end_with?' for nil
+  fails "Executing break from within a block raises LocalJumpError when converted into a proc during a a super call" # Expected LocalJumpError but no exception was raised (1 was returned)
+  fails "Executing break from within a block returns from the original invoking method even in case of chained calls"
+  fails "Executing break from within a block works when passing through a super call" # Expected to not get Exception
+  fails "Execution variable $: is initialized to an array of strings"
+  fails "Execution variable $: is read-only"
+  fails "Execution variable $: is the same object as $LOAD_PATH and $-I"
+  fails "Global variable $-a is read-only"
+  fails "Global variable $-d is an alias of $DEBUG"
+  fails "Global variable $-l is read-only"
+  fails "Global variable $-p is read-only"
+  fails "Global variable $-v is an alias of $VERBOSE"
+  fails "Global variable $-w is an alias of $VERBOSE"
+  fails "Global variable $0 is the path given as the main script and the same as __FILE__"
+  fails "Global variable $0 raises a TypeError when not given an object that can be coerced to a String"
+  fails "Global variable $< is read-only"
+  fails "Global variable $? is read-only"
+  fails "Global variable $? is thread-local"
+  fails "Global variable $FILENAME is read-only"
+  fails "Global variable $VERBOSE converts truthy values to true" # Expected 1 to be true
+  fails "Global variable $\" is read-only"
+  fails "Hash literal checks duplicated float keys on initialization" # Expected warning to match: /key 1.0 is duplicated|duplicated key/ but got: ""
+  fails "Hash literal checks duplicated keys on initialization" # Expected warning to match: /key 1000 is duplicated|duplicated key/ but got: ""
+  fails "Hash literal expands a BasicObject using ** into the containing Hash literal initialization" # NoMethodError: undefined method `respond_to?' for BasicObject
+  fails "Heredoc string allow HEREDOC with <<\"identifier\", interpolated" # Expected #<Encoding:UTF-16LE> to equal #<Encoding:ASCII-8BIT (dummy)>
+  fails "Heredoc string allows HEREDOC with <<'identifier', no interpolation" # Expected #<Encoding:UTF-16LE> to equal #<Encoding:ASCII-8BIT (dummy)>
+  fails "Heredoc string allows HEREDOC with <<-'identifier', allowing to indent identifier, no interpolation" # Expected #<Encoding:UTF-16LE> to equal #<Encoding:ASCII-8BIT (dummy)>
+  fails "Heredoc string allows HEREDOC with <<-\"identifier\", allowing to indent identifier, interpolated" # Expected #<Encoding:UTF-16LE> to equal #<Encoding:ASCII-8BIT (dummy)>
+  fails "Heredoc string allows HEREDOC with <<-identifier, allowing to indent identifier, interpolated" # Expected #<Encoding:UTF-16LE> to equal #<Encoding:ASCII-8BIT (dummy)>
+  fails "Heredoc string allows HEREDOC with <<identifier, interpolated" # Expected #<Encoding:UTF-16LE> to equal #<Encoding:ASCII-8BIT (dummy)>
+  fails "Instantiating a singleton class raises a TypeError when allocate is called"
+  fails "Instantiating a singleton class raises a TypeError when new is called"
+  fails "Keyword arguments are now separated from positional arguments when the method takes a ** parameter does not convert a positional Hash to keyword arguments" # Expected ArgumentError (wrong number of arguments (given 4, expected 3)) but no exception was raised (42 was returned)
+  fails "Keyword arguments are now separated from positional arguments when the method takes a key: parameter when it's called with a positional Hash and no ** raises ArgumentError" # Expected ArgumentError (wrong number of arguments (given 4, expected 3)) but no exception was raised (42 was returned)
+  fails "Literal (A::X) constant resolution uses the module or class #inspect to craft the error message if they are anonymous" # Expected NameError (/uninitialized constant <unusable info>::DOES_NOT_EXIST/) but got: NameError (uninitialized constant #<Module:0x50c0>::DOES_NOT_EXIST)
+  fails "Literal (A::X) constant resolution uses the module or class #name to craft the error message" # Expected NameError (/uninitialized constant ModuleName::DOES_NOT_EXIST/) but got: NameError (uninitialized constant #<Module:0x50ba>::DOES_NOT_EXIST)
+  fails "Literal (A::X) constant resolution with dynamically assigned constants evaluates the right hand side before evaluating a constant path"
+  fails "Literal Regexps caches the Regexp object"
+  fails "Literal Regexps support handling unicode 9.0 characters with POSIX bracket expressions" # Expected "" to equal "𐓘"
+  fails "Literal Regexps supports (?# )"
+  fails "Literal Regexps supports (?> ) (embedded subexpression)"
+  fails "Literal Regexps supports \\g (named backreference)"
+  fails "Literal Regexps supports character class composition"
+  fails "Literal Regexps supports conditional regular expressions with named capture groups" # Exception: named captures are not supported in javascript: "^(?<word>foo)?(?(<word>)(T)|(F))$"
+  fails "Literal Regexps supports conditional regular expressions with positional capture groups" # Exception: Invalid regular expression: /^(foo)?(?(1)(T)|(F))$/: Invalid group
+  fails "Literal Regexps supports escaping characters when used as a terminator" # Expected "!" to equal "(?-mix:!)"
+  fails "Literal Regexps supports possessive quantifiers"
+  fails "Literal Regexps throws SyntaxError for malformed literals"
+  fails "Literal Regexps treats an escaped non-escapable character normally when used as a terminator" # Expected "\\$" to equal "(?-mix:\\$)"
+  fails "Local variable shadowing does not warn in verbose mode" # Expected nil == [3, 3, 3] to be truthy but was false
+  fails "Magic comments in a loaded file are case-insensitive" # LoadError: cannot load such file -- ruby/language/fixtures/case_magic_comment
+  fails "Magic comments in a loaded file are optional" # LoadError: cannot load such file -- ruby/language/fixtures/no_magic_comment
+  fails "Magic comments in a loaded file can be after the shebang" # LoadError: cannot load such file -- ruby/language/fixtures/shebang_magic_comment
+  fails "Magic comments in a loaded file can take Emacs style" # LoadError: cannot load such file -- ruby/language/fixtures/emacs_magic_comment
+  fails "Magic comments in a loaded file can take vim style" # LoadError: cannot load such file -- ruby/language/fixtures/vim_magic_comment
+  fails "Magic comments in a loaded file determine __ENCODING__" # LoadError: cannot load such file -- ruby/language/fixtures/magic_comment
+  fails "Magic comments in a loaded file do not cause bytes to be mangled by passing them through the wrong encoding" # LoadError: cannot load such file -- ruby/language/fixtures/bytes_magic_comment
+  fails "Magic comments in a loaded file must be at the first line" # LoadError: cannot load such file -- ruby/language/fixtures/second_line_magic_comment
+  fails "Magic comments in a loaded file must be the first token of the line" # LoadError: cannot load such file -- ruby/language/fixtures/second_token_magic_comment
+  fails "Magic comments in a required file are case-insensitive" # NameError: uninitialized constant Encoding::Big5
+  fails "Magic comments in a required file are optional" # Expected nil to equal "UTF-8"
+  fails "Magic comments in a required file can be after the shebang" # NameError: uninitialized constant Encoding::Big5
+  fails "Magic comments in a required file can take Emacs style" # NameError: uninitialized constant Encoding::Big5
+  fails "Magic comments in a required file can take vim style" # NameError: uninitialized constant Encoding::Big5
+  fails "Magic comments in a required file determine __ENCODING__" # NameError: uninitialized constant Encoding::Big5
+  fails "Magic comments in a required file do not cause bytes to be mangled by passing them through the wrong encoding" # Expected nil to equal "[167, 65, 166, 110]"
+  fails "Magic comments in a required file must be at the first line" # Expected nil to equal "UTF-8"
+  fails "Magic comments in a required file must be the first token of the line" # Expected nil to equal "UTF-8"
+  fails "Magic comments in an -e argument are case-insensitive" # ArgumentError: unknown encoding name - locale
+  fails "Magic comments in an -e argument are optional" # ArgumentError: unknown encoding name - locale
+  fails "Magic comments in an -e argument can be after the shebang" # ArgumentError: unknown encoding name - locale
+  fails "Magic comments in an -e argument can take Emacs style" # ArgumentError: unknown encoding name - locale
+  fails "Magic comments in an -e argument can take vim style" # ArgumentError: unknown encoding name - locale
+  fails "Magic comments in an -e argument determine __ENCODING__" # ArgumentError: unknown encoding name - locale
+  fails "Magic comments in an -e argument do not cause bytes to be mangled by passing them through the wrong encoding" # ArgumentError: unknown encoding name - locale
+  fails "Magic comments in an -e argument must be at the first line" # ArgumentError: unknown encoding name - locale
+  fails "Magic comments in an -e argument must be the first token of the line" # ArgumentError: unknown encoding name - locale
+  fails "Magic comments in an eval are case-insensitive" # ArgumentError: [File.read] wrong number of arguments(2 for 1)
+  fails "Magic comments in an eval are optional" # ArgumentError: [File.read] wrong number of arguments(2 for 1)
+  fails "Magic comments in an eval can be after the shebang" # ArgumentError: [File.read] wrong number of arguments(2 for 1)
+  fails "Magic comments in an eval can take Emacs style" # ArgumentError: [File.read] wrong number of arguments(2 for 1)
+  fails "Magic comments in an eval can take vim style" # ArgumentError: [File.read] wrong number of arguments(2 for 1)
+  fails "Magic comments in an eval determine __ENCODING__" # ArgumentError: [File.read] wrong number of arguments(2 for 1)
+  fails "Magic comments in an eval do not cause bytes to be mangled by passing them through the wrong encoding" # ArgumentError: [File.read] wrong number of arguments(2 for 1)
+  fails "Magic comments in an eval must be at the first line" # ArgumentError: [File.read] wrong number of arguments(2 for 1)
+  fails "Magic comments in an eval must be the first token of the line" # ArgumentError: [File.read] wrong number of arguments(2 for 1)
+  fails "Magic comments in stdin are case-insensitive" # ArgumentError: unknown encoding name - locale
+  fails "Magic comments in stdin are optional" # ArgumentError: unknown encoding name - locale
+  fails "Magic comments in stdin can be after the shebang" # ArgumentError: unknown encoding name - locale
+  fails "Magic comments in stdin can take Emacs style" # ArgumentError: unknown encoding name - locale
+  fails "Magic comments in stdin can take vim style" # ArgumentError: unknown encoding name - locale
+  fails "Magic comments in stdin determine __ENCODING__" # ArgumentError: unknown encoding name - locale
+  fails "Magic comments in stdin do not cause bytes to be mangled by passing them through the wrong encoding" # ArgumentError: unknown encoding name - locale
+  fails "Magic comments in stdin must be at the first line" # ArgumentError: unknown encoding name - locale
+  fails "Magic comments in stdin must be the first token of the line" # ArgumentError: unknown encoding name - locale
+  fails "Magic comments in the main file are case-insensitive" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x8aa2e>
+  fails "Magic comments in the main file are optional" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x8aa2e>
+  fails "Magic comments in the main file can be after the shebang" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x8aa2e>
+  fails "Magic comments in the main file can take Emacs style" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x8aa2e>
+  fails "Magic comments in the main file can take vim style" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x8aa2e>
+  fails "Magic comments in the main file determine __ENCODING__" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x8aa2e>
+  fails "Magic comments in the main file do not cause bytes to be mangled by passing them through the wrong encoding" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x8aa2e>
+  fails "Magic comments in the main file must be at the first line" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x8aa2e>
+  fails "Magic comments in the main file must be the first token of the line" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x8aa2e>
+  fails "NoMethodError#message calls receiver.inspect only when calling Exception#message" # Expected ["inspect_called"] to equal []
+  fails "Numbered parameters does not support more than 9 parameters" # Expected NameError (/undefined local variable or method `_10'/) but got: NoMethodError (undefined method `_10' for #<MSpecEnv:0x5d700>)
+  fails "Operators * / % are left-associative"
+  fails "Operators <=> == === != =~ !~ have higher precedence than &&" # Expected false == false to be falsy but was true
+  fails "Optional constant assignment with ||= causes side-effects of the module part to be applied (for nil constant)" # Expected 3 == 1 to be truthy but was false
+  fails "Optional constant assignment with ||= causes side-effects of the module part to be applied only once (for undefined constant)" # Expected 2 == 1 to be truthy but was false  
+  fails "Optional variable assignments using compounded constants with &&= assignments" # Expected warning to match: /already initialized constant/ but got: ""
+  fails "Optional variable assignments using compounded constants with operator assignments" # Expected warning to match: /already initialized constant/ but got: ""
+  fails "Pattern matching Array pattern calls #deconstruct once for multiple patterns, caching the result" # Expected ["deconstruct", "deconstruct"] == ["deconstruct"] to be truthy but was false
+  fails "Pattern matching Array pattern raises TypeError if #deconstruct method does not return array" # Expected TypeError (/deconstruct must return Array/) but no exception was raised (nil was returned)
+  fails "Pattern matching Hash pattern does not match object if #deconstruct_keys method does not return Hash" # Expected TypeError (/deconstruct_keys must return Hash/) but got: NoMethodError (undefined method `key?' for "")
+  fails "Pattern matching Hash pattern does not match object if #deconstruct_keys method returns Hash with non-symbol keys" # Expected true == false to be truthy but was false
+  fails "Pattern matching Hash pattern raise SyntaxError when keys duplicate in pattern" # Expected SyntaxError (/duplicated key name/) but got: SyntaxError (duplicate hash pattern key a)
+  fails "Pattern matching alternative pattern does not support variable binding" # Expected SyntaxError (/illegal variable in alternative pattern/) but no exception was raised (nil was returned)
+  fails "Pattern matching cannot mix in and when operators" # Expected SyntaxError (/syntax error, unexpected `in'/) but got: SyntaxError (unexpected token kIN)
+  fails "Pattern matching variable pattern allows applying ^ operator to bound variables" # NoMatchingPatternError: [1, 1]
+  fails "Pattern matching variable pattern does not support using variable name (except _) several times" # Expected SyntaxError (/duplicated variable name/) but got: SyntaxError (duplicate variable name a)
+  fails "Pattern matching variable pattern requires bound variable to be specified in a pattern before ^ operator when it relies on a bound variable" # Expected SyntaxError (/n: no such local variable/) but got: SyntaxError (no such local variable: `n')
+  fails "Pattern matching variable pattern supports existing variables in a pattern specified with ^ operator" # SyntaxError: no such local variable: `a'
+  fails "Pattern matching warning when regular form does not warn about pattern matching is experimental feature" # NameError: uninitialized constant Warning
+  fails "Predefined global $+ captures the last non nil capture"
+  fails "Predefined global $+ is equivalent to $~.captures.last"
+  fails "Predefined global $, raises TypeError if assigned a non-String"
+  fails "Predefined global $-0 changes $/"
+  fails "Predefined global $-0 does not call #to_str to convert the object to a String"
+  fails "Predefined global $-0 raises a TypeError if assigned a boolean"
+  fails "Predefined global $-0 raises a TypeError if assigned an Integer" # Expected TypeError but no exception was raised (1 was returned)
+  fails "Predefined global $. can be assigned a Float" # Expected 123.5 to equal 123
+  fails "Predefined global $. raises TypeError if object can't be converted to an Integer" # Expected TypeError but no exception was raised (#<MockObject:0x518b4> was returned)
+  fails "Predefined global $. should call #to_int to convert the object to an Integer" # Expected #<MockObject:0x518c2> to equal 321
+  fails "Predefined global $/ changes $-0"
+  fails "Predefined global $/ does not call #to_str to convert the object to a String"
+  fails "Predefined global $/ raises a TypeError if assigned a boolean"
+  fails "Predefined global $/ raises a TypeError if assigned an Integer" # Expected TypeError but no exception was raised (#<Number>(#pretty_inspect raised #<TypeError: no implicit conversion of Number into String>) was returned)
+  fails "Predefined global $_ is Thread-local"
+  fails "Predefined global $_ is set at the method-scoped level rather than block-scoped"
+  fails "Predefined global $stdout raises TypeError error if assigned to nil"
+  fails "Predefined global $stdout raises TypeError error if assigned to object that doesn't respond to #write"
+  fails "Predefined global $~ is set at the method-scoped level rather than block-scoped"
+  fails "Predefined global $~ raises an error if assigned an object not nil or instanceof MatchData"
+  fails "Ruby String interpolation returns a string with the source encoding by default" # Expected #<Encoding:UTF-8> == #<Encoding:ASCII-8BIT (dummy)> to be truthy but was false
+  fails "Ruby String interpolation returns a string with the source encoding, even if the components have another encoding" # ArgumentError: unknown encoding name - euc-jp
+  fails "Safe navigator allows assignment methods"
+  fails "The ** operator hash with omitted value accepts mixed syntax" # NameError: uninitialized constant MSpecEnv::a
+  fails "The ** operator hash with omitted value accepts short notation 'key' for 'key: value' syntax" # NameError: uninitialized constant MSpecEnv::a
+  fails "The ** operator hash with omitted value ignores hanging comma on short notation" # NameError: uninitialized constant MSpecEnv::a
+  fails "The ** operator hash with omitted value works with methods and local vars" # NameError: uninitialized constant #<Class:0x874c0>::bar
+  fails "The BEGIN keyword accesses variables outside the eval scope"
+  fails "The BEGIN keyword runs first in a given code unit"
+  fails "The BEGIN keyword runs in a shared scope"
+  fails "The BEGIN keyword runs multiple begins in FIFO order"
+  fails "The BEGIN keyword uses top-level for self" # NameError: uninitialized constant TOPLEVEL_BINDING
+  fails "The END keyword runs last in a given code unit" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x1e972>
+  fails "The END keyword runs multiple ends in LIFO order" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x1e972>
+  fails "The END keyword runs only once for multiple calls" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x1e972>
+  fails "The __ENCODING__ pseudo-variable is US-ASCII by default"
+  fails "The __ENCODING__ pseudo-variable is the encoding specified by a magic comment in the file"
+  fails "The __ENCODING__ pseudo-variable is the encoding specified by a magic comment inside an eval"
+  fails "The __ENCODING__ pseudo-variable is the evaluated strings's one inside an eval"
+  fails "The __FILE__ pseudo-variable equals the absolute path of a file loaded by a relative path" # we can't clear $LOADED_FEATURES, should be treated as readonly
+  fails "The __FILE__ pseudo-variable equals the absolute path of a file loaded by an absolute path" # we can't clear $LOADED_FEATURES, should be treated as readonly
+  fails "The __LINE__ pseudo-variable equals the line number of the text in a loaded file"
+  fails "The alias keyword can create a new global variable, synonym of the original" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x4478>
+  fails "The alias keyword can override an existing global variable and make them synonyms" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x4478>
+  fails "The alias keyword is not allowed against Integer or String instances" # Expected TypeError but got: Exception (Cannot read property '$to_s' of undefined)
+  fails "The alias keyword on top level defines the alias on Object"
+  fails "The alias keyword operates on methods defined via attr, attr_reader, and attr_accessor"
+  fails "The alias keyword operates on the object's metaclass when used in instance_eval"
+  fails "The alias keyword supports aliasing twice the same global variables" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x22a72>
+  fails "The break statement in a captured block from a scope that has returned raises a LocalJumpError when calling the block from a method"
+  fails "The break statement in a captured block from a scope that has returned raises a LocalJumpError when yielding to the block"
+  fails "The break statement in a captured block from another thread raises a LocalJumpError when getting the value from another thread" # NameError: uninitialized constant Thread
+  fails "The break statement in a captured block when the invocation of the scope creating the block is still active raises a LocalJumpError when invoking the block from a method"
+  fails "The break statement in a captured block when the invocation of the scope creating the block is still active raises a LocalJumpError when invoking the block from the scope creating the block"
+  fails "The break statement in a captured block when the invocation of the scope creating the block is still active raises a LocalJumpError when yielding to the block"
+  fails "The break statement in a lambda created at the toplevel returns a value when invoking from a block"
+  fails "The break statement in a lambda created at the toplevel returns a value when invoking from a method"
+  fails "The break statement in a lambda created at the toplevel returns a value when invoking from the toplevel"
+  fails "The break statement in a lambda from a scope that has returned raises a LocalJumpError when yielding to a lambda passed as a block argument"
+  fails "The break statement in a lambda from a scope that has returned returns a value to the block scope invoking the lambda in a method" # Exception: $brk is not defined
+  fails "The break statement in a lambda from a scope that has returned returns a value to the method scope invoking the lambda" # Exception: $brk is not defined
+  fails "The break statement in a lambda returns from the call site if the lambda is passed as a block" # Expected ["before", "unreachable1", "unreachable2", "after"] to equal ["before", "after"]
+  fails "The break statement in a lambda when the invocation of the scope creating the lambda is still active returns a value to a block scope invoking the lambda in a method below" # Exception: $brk is not defined
+  fails "The break statement in a lambda when the invocation of the scope creating the lambda is still active returns a value to the method scope below invoking the lambda" # Exception: $brk is not defined
+  fails "The break statement in a lambda when the invocation of the scope creating the lambda is still active returns a value to the scope creating and calling the lambda" # Exception: $brk is not defined
+  fails "The break statement in a lambda when the invocation of the scope creating the lambda is still active returns from the lambda" # Exception: unexpected break
+  fails "The break statement in a lambda when the invocation of the scope creating the lambda is still active returns nil when not passed an argument" # Exception: $brk is not defined
+  fails "The class keyword does not raise a SyntaxError when opening a class without a semicolon" # NameError: uninitialized constant ClassSpecsKeywordWithoutSemicolon
+  fails "The def keyword within a closure looks outside the closure for the visibility"
+  fails "The defined? keyword for a scoped constant returns nil when a constant is defined on top-level but not on the class" # Expected "constant" to be nil
+  fails "The defined? keyword for a simple constant returns 'constant' when the constant is defined" # Expected false == true to be truthy but was false
+  fails "The defined? keyword for an expression returns 'assignment' for assigning a local variable" # Expected false == true to be truthy but was false
+  fails "The defined? keyword for literals for a literal Array returns 'expression' if each element is defined" # Expected false == true to be truthy but was false
+  fails "The defined? keyword for literals returns 'false' for false" # Expected false == true to be truthy but was false
+  fails "The defined? keyword for literals returns 'nil' for nil" # Expected false == true to be truthy but was false
+  fails "The defined? keyword for literals returns 'self' for self" # Expected false == true to be truthy but was false
+  fails "The defined? keyword for literals returns 'true' for true" # Expected false == true to be truthy but was false
+  fails "The defined? keyword for super for a method taking no arguments returns 'super' when a superclass method exists" # Expected false == true to be truthy but was false
+  fails "The defined? keyword for variables returns 'class variable' when called with the name of a class variable" # Expected false == true to be truthy but was false
+  fails "The defined? keyword for variables returns 'global-variable' for a global variable that has been assigned nil" # Expected false == true to be truthy but was false
+  fails "The defined? keyword for variables returns 'instance-variable' for an instance variable that has been assigned to nil"
+  fails "The defined? keyword for variables returns 'instance-variable' for an instance variable that has been assigned" # Expected false == true to be truthy but was false
+  fails "The defined? keyword for variables returns 'local-variable' when called with the name of a local variable" # Expected false == true to be truthy but was false
+  fails "The defined? keyword for variables returns nil for a global variable that has been read but not assigned to"
+  fails "The defined? keyword for variables when a Regexp matches a String returns nil for non-captures"
+  fails "The defined? keyword for variables when a String matches a Regexp returns nil for non-captures"
+  fails "The defined? keyword for yield returns 'yield' if a block is passed to a method not taking a block parameter" # Expected false == true to be truthy but was false
+  fails "The defined? keyword when called with a method name without a receiver returns 'method' if the method is defined" # Expected false == true to be truthy but was false
+  fails "The if expression with a boolean range ('flip-flop' operator) evaluates the first conditions lazily with exclusive-end range"
+  fails "The if expression with a boolean range ('flip-flop' operator) evaluates the first conditions lazily with inclusive-end range"
+  fails "The or operator has a lower precedence than 'next' in 'next true or false'"
+  fails "The redo statement in a method is invalid and raises a SyntaxError" # Expected SyntaxError but no exception was raised ("m" was returned)
+  fails "The redo statement triggers ensure block when re-executing a block"
+  fails "The rescue keyword allows rescue in 'do end' block" # NoMethodError: undefined method `call' for nil
+  fails "The rescue keyword can capture the raised exception using a setter method" # NoMethodError: undefined method `message' for nil
+  fails "The rescue keyword can capture the raised exception using a square brackets setter" # ArgumentError: [SquareBracketsCaptor#[]=] wrong number of arguments(1 for 2)
+  fails "The rescue keyword inline form can be inlined" # Expected Infinity to equal 1
+  fails "The rescue keyword only accepts Module or Class in rescue clauses" # RuntimeError: error
+  fails "The rescue keyword only accepts Module or Class in splatted rescue clauses" # RuntimeError: error
+  fails "The rescue keyword rescues the exception in the deepest rescue block declared to handle the appropriate exception type" # Expected "StandardError: an error occurred" to include ":in `raise_standard_error'"
+  fails "The return keyword at top level return with argument warns but does not affect exit status" # Exception: path.substr is not a function
+  fails "The return keyword at top level within a block within a class is not allowed" # Exception: path.substr is not a function
+  fails "The super keyword uses block argument given to method when used in a block" # LocalJumpError: no block given
+  fails "The super keyword uses given block even if arguments are passed explicitly"
+  fails "The throw keyword raises an UncaughtThrowError if used to exit a thread" # NotImplementedError: Thread creation not available
+  fails "The unpacking splat operator (*) when applied to a BasicObject coerces it to Array if it respond_to?(:to_a)" # NoMethodError: undefined method `respond_to?' for BasicObject
+  fails "The until expression restarts the current iteration without reevaluating condition with redo"
+  fails "The until modifier restarts the current iteration without reevaluating condition with redo"
+  fails "The until modifier with begin .. end block restart the current iteration without reevaluating condition with redo" # Expected [1] to equal [0, 0, 0, 1, 2]
+  fails "The while expression stops running body if interrupted by break in a begin ... end element op-assign value"
+  fails "The while expression stops running body if interrupted by break in a parenthesized element op-assign value"
+  fails "The yield call taking a single argument yielding to a lambda should not destructure an Array into multiple arguments" # Expected ArgumentError but no exception was raised ([1, 2] was returned)
+  fails "The yield call taking no arguments ignores assignment to the explicit block argument and calls the passed block"
+  fails "Using yield in a singleton class literal raises a SyntaxError" # Expected SyntaxError (/Invalid yield/) but got: SyntaxError (undefined method `uses_block!' for nil)
+  fails "a method definition that sets more than one default parameter all to the same value only allows overriding the default value of the first such parameter in each set" # ArgumentError: [MSpecEnv#foo] wrong number of arguments(2 for -1)
+  fails "a method definition that sets more than one default parameter all to the same value treats the argument after the multi-parameter normally" # ArgumentError: [MSpecEnv#bar] wrong number of arguments(3 for -1)
+  fails "kwarg with omitted value in a method call accepts short notation 'kwarg' in method call for definition 'def call(*args, **kwargs) = [args, kwargs]'" # NameError: uninitialized constant SpecEvaluate::a
+  fails "kwarg with omitted value in a method call with methods and local variables for definition \n    def call(*args, **kwargs) = [args, kwargs]\n    def bar\n      \"baz\"\n    end\n    def foo(val)\n      call bar:, val:\n    end" # NameError: uninitialized constant SpecEvaluate::bar
+  fails "self in a metaclass body (class << obj) raises a TypeError for numbers"
+  fails "self in a metaclass body (class << obj) raises a TypeError for symbols"
+  fails "self.send(:block_given?) returns false when a method defined by define_method is called with a block"
+  fails "self.send(:block_given?) returns true if and only if a block is supplied"
+  fails "top-level constant lookup on a class does not search Object after searching other scopes" # Expected NameError but no exception was raised (Hash was returned)
+  fails_badly "Pattern matching refinements are used for #=== in constant pattern"
+  fails_badly "Pattern matching refinements are used for #deconstruct"
+  fails_badly "Pattern matching refinements are used for #deconstruct_keys"
+  fails_badly "The while expression stops running body if interrupted by break in a begin ... end attribute op-assign-or value"
+  fails_badly "The while expression stops running body if interrupted by break in a parenthesized attribute op-assign-or value"
+  fails_badly "The while expression stops running body if interrupted by break with unless in a begin ... end attribute op-assign-or value"
+  fails_badly "The while expression stops running body if interrupted by break with unless in a parenthesized attribute op-assign-or value"
+end
diff --git a/spec/filters/bugs/main.rb b/spec/filters/bugs/main.rb
new file mode 100644
index 00000000..1810dd9b
--- /dev/null
+++ b/spec/filters/bugs/main.rb
@@ -0,0 +1,14 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "main" do
+  fails "main#include in a file loaded with wrapping includes the given Module in the load wrapper" # ArgumentError: [MSpecEnv#load] wrong number of arguments(2 for 1)
+  fails "main#private raises a NameError when at least one of given method names is undefined" # Expected NameError but no exception was raised (nil was returned)
+  fails "main#private when multiple arguments are passed sets the visibility of the given methods to private" # Expected Object to have private method 'main_public_method' but it does not
+  fails "main#private when single argument is passed and is an array sets the visibility of the given methods to private" # Expected Object to have private method 'main_public_method' but it does not
+  fails "main#private when single argument is passed and it is not an array sets the visibility of the given methods to private" # Expected Object to have private method 'main_public_method' but it does not
+  fails "main#public raises a NameError when given an undefined name" # Expected NameError but no exception was raised (nil was returned)
+  fails "main.ruby2_keywords is the same as Object.ruby2_keywords" # Expected main to have private method 'ruby2_keywords' but it does not
+  fails "main.using does not propagate refinements of new modules added after it is called" # Expected "quux" == "bar" to be truthy but was false
+  fails "main.using requires one Module argument" # Expected TypeError but no exception was raised (main was returned)
+  fails "main.using uses refinements from the given module for method calls in the target file" # LoadError: cannot load such file -- ruby/core/main/fixtures/string_refinement_user
+  fails "main.using uses refinements from the given module only in the target file" # LoadError: cannot load such file -- ruby/core/main/fixtures/string_refinement_user
+end
diff --git a/spec/filters/bugs/marshal.rb b/spec/filters/bugs/marshal.rb
new file mode 100644
index 00000000..98803cd2
--- /dev/null
+++ b/spec/filters/bugs/marshal.rb
@@ -0,0 +1,49 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "Marshal" do
+  fails "Marshal.dump ignores the recursion limit if the limit is negative" # no support yet
+  fails "Marshal.dump raises a TypeError if dumping a Mutex instance" # Expected TypeError but no exception was raised ("\u0004\bo:\nMutex\u0006:\f@lockedF" was returned)
+  fails "Marshal.dump when passed a StringIO should raise an error" # Expected TypeError but no exception was raised ("\u0004\bo:\rStringIO\a:\f@string\"\u0000:\u000E@positioni\u0000" was returned)
+  fails "Marshal.dump with a Regexp dumps a Regexp subclass" # requires Class.new(Regexp).new("").class != Regexp
+  fails "Marshal.dump with a Regexp dumps a Regexp with instance variables" # //.source.should == ''
+  fails "Marshal.dump with a Struct dumps an extended Struct" # Expected  "\x04\be: MethsS:\x15Struct::Extended\a:\x06a[\a\"\x06a\"\ahi:\x06b[\a\" Meths@\b" ==  "\x04\be: MethsS:\x15Struct::Extended\a:\x06a[\a;\a\"\ahi:\x06b[\a;\x00@\a" to be truthy but was false
+  fails "Marshal.dump with a Symbol dumps multiple Symbols sharing the same encoding" # Expected "\x04\b[\a\"\tâ\x82¬a\"\tâ\x82¬b" == "\u0004\b[\aI:\tâ\u0082¬a\u0006:\u0006ETI:\tâ\u0082¬b\u0006;\u0006T" to be truthy but was false
+  fails "Marshal.dump with a Time dumps the zone and the offset"
+  fails "Marshal.dump with a Time dumps the zone, but not the offset if zone is UTC" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "Marshal.dump with an Exception contains the filename in the backtrace"
+  fails "Marshal.dump with an Exception dumps an empty Exception"
+  fails "Marshal.dump with an Exception dumps instance variables if they exist" # Expected  "\u0004\bo:\u000EException\a: @name\"\u000EException: @ivari\u0006" ==  "\u0004\bo:\u000EException\b:\tmesg\"\bfoo:\abt0: @ivari\u0006" to be truthy but was false
+  fails "Marshal.dump with an Exception dumps the cause for the exception" # NoMethodError: undefined method `cause' for #<RuntimeError: the consequence>
+  fails "Marshal.dump with an Exception dumps the message for the exception"
+  fails "Marshal.dump with an Object dumps a BasicObject subclass if it defines respond_to?"
+  fails "Marshal.dump with an Object dumps an Object with a non-US-ASCII instance variable" # NameError: '@é' is not allowed as an instance variable name
+  fails "Marshal.dump with an Object raises if an Object has a singleton class and singleton methods" # Expected TypeError (singleton can't be dumped) but no exception was raised ("\u0004\bo:\vObject\u0000" was returned)
+  fails "Marshal.dump with an object responding to #_dump dumps the object returned by #marshal_dump"
+  fails "Marshal.load for a Module loads an old module"
+  fails "Marshal.load for a Regexp loads a extended_user_regexp having ivar"
+  fails "Marshal.load for a Regexp loads an extended Regexp" # Expected /[a-z]/ == /(?:)/ to be truthy but was false
+  fails "Marshal.load for a String loads a String as BINARY if no encoding is specified at the end" # Expected #<Encoding:UTF-16LE> to equal #<Encoding:ASCII-8BIT (dummy)>
+  fails "Marshal.load for a String loads a String subclass with custom constructor" # ArgumentError: [UserCustomConstructorString#initialize] wrong number of arguments(1 for 2)
+  fails "Marshal.load for a Struct does not call initialize on the unmarshaled struct"
+  fails "Marshal.load for a Symbol loads a Symbol" # Expected #<Encoding:UTF-16LE> to equal #<Encoding:ASCII-8BIT (dummy)>
+  fails "Marshal.load for a Symbol loads a binary encoded Symbol" # Expected "â\u0086\u0092" to equal "→"
+  fails "Marshal.load for a Symbol loads an encoded Symbol" # Expected "â\u0086\u0092" to equal "→"
+  fails "Marshal.load for a Time loads nanoseconds"
+  fails "Marshal.load for a Time loads"
+  fails "Marshal.load for a user object that extends a core type other than Object or BasicObject raises ArgumentError if the resulting class does not extend the same type" # TypeError: no implicit conversion of Hash into Integer
+  fails "Marshal.load for an Exception loads a marshalled exception with a backtrace"
+  fails "Marshal.load for an Exception loads a marshalled exception with a message"
+  fails "Marshal.load for an Exception loads a marshalled exception with no message"
+  fails "Marshal.load for an Exception loads an marshalled exception with ivars" # Expected "Exception" == "foo" to be truthy but was false
+  fails "Marshal.load for an Object loads an Object with a non-US-ASCII instance variable" # NameError: '@é' is not allowed as an instance variable name
+  fails "Marshal.load for an Object raises ArgumentError if the object from an 'o' stream is not dumpable as 'o' type user class" # Expected ArgumentError but no exception was raised (#<File:0x3b160> was returned)
+  fails "Marshal.load for an object responding to #marshal_dump and #marshal_load loads a user-marshaled object" # Expected "\x04\b[\aU:\x10UserMarshal\"\tdata@\x06" == "\x04\b[\aU:\x10UserMarshal:\tdata;\x06" to be truthy but was false
+  fails "Marshal.load loads an array containing objects having _dump method, and with proc"
+  fails "Marshal.load loads an array containing objects having marshal_dump method, and with proc"
+  fails "Marshal.load when a class does not exist in the namespace raises an ArgumentError" # an issue with constant resolving, e.g. String::Array
+  fails "Marshal.load when called with a proc call the proc with fully initialized strings" # ArgumentError: [Marshal.load] wrong number of arguments(2 for 1)
+  fails "Marshal.load when called with a proc calls the proc for recursively visited data"
+  fails "Marshal.load when called with a proc loads an Array with proc"
+  fails "Marshal.load when called with a proc no longer mutate the object after it was passed to the proc" # ArgumentError: [Marshal.load] wrong number of arguments(2 for 1)
+  fails "Marshal.load when called with a proc returns the value of the proc"
+  fails "Marshal.load when called with nil for the proc argument behaves as if no proc argument was passed" # ArgumentError: [Marshal.load] wrong number of arguments(2 for 1)
+end
diff --git a/spec/filters/bugs/math.rb b/spec/filters/bugs/math.rb
new file mode 100644
index 00000000..51412741
--- /dev/null
+++ b/spec/filters/bugs/math.rb
@@ -0,0 +1,4 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "Math" do
+  fails "Math.log2 returns the natural logarithm of the argument" # Expected Infinity to equal 10001
+end
diff --git a/spec/filters/bugs/matrix.rb b/spec/filters/bugs/matrix.rb
new file mode 100644
index 00000000..6e97d579
--- /dev/null
+++ b/spec/filters/bugs/matrix.rb
@@ -0,0 +1,3 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "Matrix" do
+end
diff --git a/spec/filters/bugs/method.rb b/spec/filters/bugs/method.rb
new file mode 100644
index 00000000..84b265c8
--- /dev/null
+++ b/spec/filters/bugs/method.rb
@@ -0,0 +1,76 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "Method" do
+  fails "Method#<< does not try to coerce argument with #to_proc" # Expected TypeError (callable object is expected) but got: NoMethodError (undefined method `<<' for #<Method: MethodSpecs::Composition#upcase (defined in MethodSpecs::Composition in ruby/core/method/fixtures/classes.rb:192)>)
+  fails "Method#<< raises TypeError if passed not callable object" # Expected TypeError (callable object is expected) but got: NoMethodError (undefined method `<<' for #<Method: MethodSpecs::Composition#upcase (defined in MethodSpecs::Composition in ruby/core/method/fixtures/classes.rb:192)>)
+  fails "Method#== missing methods returns true for the same method missing"
+  fails "Method#== returns true if a method was defined using the other one"
+  fails "Method#== returns true if methods are the same"
+  fails "Method#== returns true if the two core methods are aliases"
+  fails "Method#== returns true on aliased methods"
+  fails "Method#=== for a Method generated by respond_to_missing? does not call the original method name even if it now exists" # NameError: undefined method `handled_via_method_missing' for class `MethodSpecs::Methods'
+  fails "Method#=== for a Method generated by respond_to_missing? invokes method_missing dynamically" # NameError: undefined method `handled_via_method_missing' for class `MethodSpecs::Methods'
+  fails "Method#=== for a Method generated by respond_to_missing? invokes method_missing with the method name and the specified arguments" # NameError: undefined method `handled_via_method_missing' for class `MethodSpecs::Methods'
+  fails "Method#=== for a Method generated by respond_to_missing? invokes method_missing with the specified arguments and returns the result" # NameError: undefined method `handled_via_method_missing' for class `MethodSpecs::Methods'
+  fails "Method#>> composition is a lambda" # NoMethodError: undefined method `>>' for #<Method: MethodSpecs::Composition#pow_2 (defined in MethodSpecs::Composition in ruby/core/method/fixtures/classes.rb:200)>
+  fails "Method#>> does not try to coerce argument with #to_proc" # Expected TypeError (callable object is expected) but got: NoMethodError (undefined method `>>' for #<Method: MethodSpecs::Composition#upcase (defined in MethodSpecs::Composition in ruby/core/method/fixtures/classes.rb:192)>)
+  fails "Method#>> raises TypeError if passed not callable object" # Expected TypeError (callable object is expected) but got: NoMethodError (undefined method `>>' for #<Method: MethodSpecs::Composition#upcase (defined in MethodSpecs::Composition in ruby/core/method/fixtures/classes.rb:192)>)
+  fails "Method#[] for a Method generated by respond_to_missing? does not call the original method name even if it now exists"
+  fails "Method#[] for a Method generated by respond_to_missing? invokes method_missing dynamically"
+  fails "Method#[] for a Method generated by respond_to_missing? invokes method_missing with the method name and the specified arguments"
+  fails "Method#[] for a Method generated by respond_to_missing? invokes method_missing with the specified arguments and returns the result"
+  fails "Method#arity for a Method generated by respond_to_missing? returns -1"
+  fails "Method#call for a Method generated by respond_to_missing? does not call the original method name even if it now exists"
+  fails "Method#call for a Method generated by respond_to_missing? invokes method_missing dynamically"
+  fails "Method#call for a Method generated by respond_to_missing? invokes method_missing with the method name and the specified arguments"
+  fails "Method#call for a Method generated by respond_to_missing? invokes method_missing with the specified arguments and returns the result"
+  fails "Method#clone returns a copy of the method"
+  fails "Method#curry with optional arity argument raises ArgumentError when the method requires less arguments than the given arity"
+  fails "Method#curry with optional arity argument raises ArgumentError when the method requires more arguments than the given arity"
+  fails "Method#define_method when passed a Proc object and a method is defined inside defines the nested method in the default definee where the Proc was created" # Expected #<#<Class:0x3753c>:0x37538> NOT to have method 'nested_method_in_proc_for_define_method' but it does
+  fails "Method#define_method when passed a block behaves exactly like a lambda for break" # Exception: unexpected break
+  fails "Method#define_method when passed an UnboundMethod object defines a method with the same #arity as the original"
+  fails "Method#define_method when passed an UnboundMethod object defines a method with the same #parameters as the original"
+  fails "Method#eql? missing methods returns true for the same method missing"
+  fails "Method#eql? returns true if a method was defined using the other one"
+  fails "Method#eql? returns true if methods are the same"
+  fails "Method#eql? returns true if the two core methods are aliases"
+  fails "Method#eql? returns true on aliased methods"
+  fails "Method#hash returns the same value for builtin methods that are eql?"
+  fails "Method#hash returns the same value for user methods that are eql?"
+  fails "Method#inspect returns a String containing method arguments" # Expected "#<Method: MethodSpecs::Methods#zero (defined in MethodSpecs::Methods in ruby/core/method/fixtures/classes.rb:49)>".include? "()" to be truthy but was false
+  fails "Method#inspect returns a String containing the Module containing the method if object has a singleton class but method is not defined in the singleton class" # Expected "#<Method: MethodSpecs::MySub#bar (defined in MethodSpecs::MyMod in ruby/core/method/fixtures/classes.rb:99)>".start_with? "#<Method: MethodSpecs::MySub(MethodSpecs::MyMod)#bar" to be truthy but was false
+  fails "Method#inspect returns a String containing the singleton class if method is defined in the singleton class" # Expected "#<Method: MethodSpecs::MySub#bar (defined in #<Class:#<MethodSpecs::MySub:0x7e4a>> in ruby/core/method/shared/to_s.rb:70)>".start_with? "#<Method: #<MethodSpecs::MySub:0xXXXXXX>.bar" to be truthy but was false
+  fails "Method#inspect returns a String including all details" # Expected "#<Method: MethodSpecs::MySub#bar (defined in MethodSpecs::MyMod in ruby/core/method/fixtures/classes.rb:99)>".start_with? "#<Method: MethodSpecs::MySub(MethodSpecs::MyMod)#bar" to be truthy but was false
+  fails "Method#inspect shows the metaclass and the owner for a Module instance method retrieved from a class" # Expected "#<Method: Class#include (defined in Module in <internal:corelib/module.rb>:407)>".start_with? "#<Method: #<Class:String>(Module)#include" to be truthy but was false
+  fails "Method#name for a Method generated by respond_to_missing? returns the name passed to respond_to_missing?"
+  fails "Method#original_name returns the name of the method" # NoMethodError: undefined method `original_name' for #<Method: String#upcase (defined in String in corelib/string.rb:1672)>
+  fails "Method#original_name returns the original name even when aliased twice" # NoMethodError: undefined method `original_name' for #<Method: MethodSpecs::Methods#foo (defined in MethodSpecs::Methods in ruby/core/method/fixtures/classes.rb:24)>
+  fails "Method#original_name returns the original name when aliased" # NoMethodError: undefined method `original_name' for #<Method: MethodSpecs::Methods#foo (defined in MethodSpecs::Methods in ruby/core/method/fixtures/classes.rb:24)>
+  fails "Method#owner for a Method generated by respond_to_missing? returns the owner of the method"
+  fails "Method#parameters returns [[:req]] for each parameter for core methods with fixed-length argument lists" # Expected [["req", "other"]] to equal [["req"]]
+  fails "Method#parameters returns [[:rest]] for a Method generated by respond_to_missing?"
+  fails "Method#parameters returns [[:rest]] for core methods with variable-length argument lists" # NameError: undefined method `delete!' for class `String'
+  fails "Method#parameters returns [[:rest]] or [[:opt]] for core methods with optional arguments" # Expected [[["rest"]], [["opt"]]] to include [["opt", "count"]]
+  fails "Method#receiver for a Method generated by respond_to_missing? returns the receiver of the method"
+  fails "Method#source_location for a Method generated by respond_to_missing? returns nil"
+  fails "Method#source_location sets the first value to the path of the file in which the method was defined" # Expected "ruby/core/method/fixtures/classes.rb" to equal "./ruby/core/method/fixtures/classes.rb"
+  fails "Method#source_location works for methods defined with a block"
+  fails "Method#source_location works for methods defined with an UnboundMethod"
+  fails "Method#super_method returns nil when the parent's method is removed"
+  fails "Method#super_method returns nil when there's no super method in the parent"
+  fails "Method#super_method returns the method that would be called by super in the method"
+  fails "Method#to_proc returns a proc that can be used by define_method"
+  fails "Method#to_proc returns a proc that can receive a block"
+  fails "Method#to_proc returns a proc whose binding has the same receiver as the method" # NoMethodError: undefined method `receiver' for nil
+  fails "Method#to_s does not show the defining module if it is the same as the receiver class" # Expected "#<Method:0x80d6>".start_with? "#<Method: MethodSpecs::A#baz" to be truthy but was false
+  fails "Method#to_s returns a String containing method arguments" # Expected "#<Method:0x6cc4a>".include? "()" to be truthy but was false
+  fails "Method#to_s returns a String containing the Module containing the method if object has a singleton class but method is not defined in the singleton class" # Expected "#<Method:0x6cc94>".start_with? "#<Method: MethodSpecs::MySub(MethodSpecs::MyMod)#bar" to be truthy but was false
+  fails "Method#to_s returns a String containing the Module the method is defined in"
+  fails "Method#to_s returns a String containing the Module the method is referenced from"
+  fails "Method#to_s returns a String containing the method name"
+  fails "Method#to_s returns a String containing the singleton class if method is defined in the singleton class" # Expected "#<Method:0x805e>".start_with? "#<Method: #<MethodSpecs::MySub:0xXXXXXX>.bar" to be truthy but was false
+  fails "Method#to_s returns a String including all details" # Expected "#<Method:0x80a4>".start_with? "#<Method: MethodSpecs::MySub(MethodSpecs::MyMod)#bar" to be truthy but was false
+  fails "Method#to_s shows the metaclass and the owner for a Module instance method retrieved from a class" # Expected "#<Method: Class#include (defined in Module in <internal:corelib/module.rb>:407)>".start_with? "#<Method: #<Class:String>(Module)#include" to be truthy but was false
+  fails "Method#unbind keeps the origin singleton class if there is one" # Expected "#<UnboundMethod: Object#foo (defined in #<Class:#<Object:0x39c20>> in ruby/core/method/unbind_spec.rb:37)>".start_with? "#<UnboundMethod: #<Class:#<Object:0x39c20>>#foo" to be truthy but was false
+  fails "Method#unbind rebinding UnboundMethod to Method's obj produces exactly equivalent Methods"
+end
diff --git a/spec/filters/bugs/module.rb b/spec/filters/bugs/module.rb
new file mode 100644
index 00000000..519c4bdf
--- /dev/null
+++ b/spec/filters/bugs/module.rb
@@ -0,0 +1,193 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "Module" do
+  fails "Module#alias_method creates methods that are == to each other" # Expected #<Method: #<Class:0x9122>#uno (defined in #<Class:0x9122> in ruby/core/module/fixtures/classes.rb:206)> == #<Method: #<Class:0x9122>#public_one (defined in ModuleSpecs::Aliasing in ruby/core/module/fixtures/classes.rb:206)> to be truthy but was false
+  fails "Module#alias_method handles aliasing a method only present in a refinement" # NoMethodError: undefined method `refine' for #<Module:0x90fa>
+  fails "Module#alias_method retains method visibility"
+  fails "Module#alias_method returned value returns symbol of the defined method name" # Expected #<Class:0x1c94a> to be identical to "checking_return_value"
+  fails "Module#ancestors returns a list of modules included in self (including self)" # Expected [ModuleSpecs::Parent, Object, Shellwords, Kernel, BasicObject] == [ModuleSpecs::Parent, Object, Kernel, BasicObject] to be truthy but was false -- a random failure
+  fails "Module#append_features on Class raises a TypeError if calling after rebinded to Class"
+  fails "Module#attr applies current visibility to methods created"
+  fails "Module#attr converts non string/symbol names to strings using to_str" # Expected false == true to be truthy but was false
+  fails "Module#attr raises a TypeError when the given names can't be converted to strings using to_str"
+  fails "Module#attr returns an array of defined method names as symbols" # Expected nil == ["foo", "bar"] to be truthy but was false
+  fails "Module#attr_accessor applies current visibility to methods created"
+  fails "Module#attr_accessor converts non string/symbol names to strings using to_str" # Expected false == true to be truthy but was false
+  fails "Module#attr_accessor not allows creating an attr_accessor on an immediate class"
+  fails "Module#attr_accessor on immediates can read through the accessor" # NoMethodError: undefined method `foobar' for 1
+  fails "Module#attr_accessor raises FrozenError if the receiver if frozen" # Expected FrozenError but no exception was raised (42 was returned)
+  fails "Module#attr_accessor raises a TypeError when the given names can't be converted to strings using to_str"
+  fails "Module#attr_accessor returns an array of defined method names as symbols" # Expected nil == ["foo", "foo=", "bar", "bar="] to be truthy but was false
+  fails "Module#attr_reader applies current visibility to methods created"
+  fails "Module#attr_reader converts non string/symbol names to strings using to_str" # Expected false == true to be truthy but was false
+  fails "Module#attr_reader not allows for adding an attr_reader to an immediate"
+  fails "Module#attr_reader raises a TypeError when the given names can't be converted to strings using to_str"
+  fails "Module#attr_reader returns an array of defined method names as symbols" # Expected nil == ["foo", "bar"] to be truthy but was false
+  fails "Module#attr_writer applies current visibility to methods created"
+  fails "Module#attr_writer converts non string/symbol names to strings using to_str" # Expected false == true to be truthy but was false
+  fails "Module#attr_writer not allows for adding an attr_writer to an immediate"
+  fails "Module#attr_writer raises FrozenError if the receiver if frozen" # Expected FrozenError but no exception was raised (42 was returned)
+  fails "Module#attr_writer raises a TypeError when the given names can't be converted to strings using to_str"
+  fails "Module#attr_writer returns an array of defined method names as symbols" # Expected nil == ["foo=", "bar="] to be truthy but was false
+  fails "Module#class_eval activates refinements from the eval scope" # NoMethodError: undefined method `foo' for #<ModuleSpecs::NamedClass:0x4a168>
+  fails "Module#class_eval converts a non-string filename to a string using to_str"
+  fails "Module#class_eval converts non string eval-string to string using to_str"
+  fails "Module#class_eval raises a TypeError when the given eval-string can't be converted to string using to_str"
+  fails "Module#class_eval raises a TypeError when the given filename can't be converted to string using to_str"
+  fails "Module#class_eval resolves constants in the caller scope ignoring send"
+  fails "Module#class_eval resolves constants in the caller scope" # fails because of the difference between module_eval("Const") and module_eval { Const } (only the second one is supported by Opal)
+  fails "Module#class_eval uses the optional filename and lineno parameters for error messages"
+  fails "Module#const_defined? coerces the inherit flag to a boolean" # Expected true to be false
+  fails "Module#const_defined? returns true for toplevel constant when the name begins with '::'"
+  fails "Module#const_defined? returns true or false for the nested name"
+  fails "Module#const_defined? returns true when passed a scoped constant name for a constant in the inheritance hierarchy and the inherited flag is default"
+  fails "Module#const_defined? returns true when passed a scoped constant name for a constant in the inheritance hierarchy and the inherited flag is true"
+  fails "Module#const_defined? returns true when passed a scoped constant name"
+  fails "Module#const_get coerces the inherit flag to a boolean" # Expected NameError but no exception was raised ("const1" was returned)
+  fails "Module#const_set sets the name of a module scoped by an anonymous module" # NoMethodError: undefined method `end_with?' for nil
+  fails "Module#const_set when overwriting an existing constant does not warn after a failed autoload" # Expected NameError but got: LoadError (cannot load such file -- ruby/core/module/fixtures/autoload_o)
+  fails "Module#const_set when overwriting an existing constant warns if the previous value was a normal value" # Expected warning to match: /already initialized constant/ but got: ""
+  fails "Module#const_source_location accepts a String or Symbol name" # NoMethodError: undefined method `__dir__' for #<MSpecEnv:0x6efae>
+  fails "Module#const_source_location accepts a scoped constant name" # NoMethodError: undefined method `__dir__' for #<MSpecEnv:0x6efae>
+  fails "Module#const_source_location accepts a toplevel scope qualifier" # NoMethodError: undefined method `__dir__' for #<MSpecEnv:0x6efae>
+  fails "Module#const_source_location autoload returns the autoload location while not resolved" # NoMethodError: undefined method `__dir__' for #<MSpecEnv:0x6efae>
+  fails "Module#const_source_location autoload returns where the constant was resolved when resolved" # NoMethodError: undefined method `__dir__' for #<MSpecEnv:0x6efae>
+  fails "Module#const_source_location calls #to_str to convert the given name to a String" # NoMethodError: undefined method `__dir__' for #<MSpecEnv:0x6efae>
+  fails "Module#const_source_location does not search the containing scope" # NoMethodError: undefined method `__dir__' for #<MSpecEnv:0x6efae>
+  fails "Module#const_source_location does not search the singleton class of a Class or Module" # NoMethodError: undefined method `__dir__' for #<MSpecEnv:0x6efae>
+  fails "Module#const_source_location does search private constants path" # NoMethodError: undefined method `__dir__' for #<MSpecEnv:0x6efae>
+  fails "Module#const_source_location raises a NameError if the name contains non-alphabetic characters except '_'" # NoMethodError: undefined method `__dir__' for #<MSpecEnv:0x6efae>
+  fails "Module#const_source_location raises a TypeError if conversion to a String by calling #to_str fails" # NoMethodError: undefined method `__dir__' for #<MSpecEnv:0x6efae>
+  fails "Module#const_source_location return empty path if constant defined in C code" # NoMethodError: undefined method `__dir__' for #<MSpecEnv:0x6efae>
+  fails "Module#const_source_location returns nil if no constant is defined in the search path" # NoMethodError: undefined method `__dir__' for #<MSpecEnv:0x6efae>
+  fails "Module#const_source_location returns nil if the constant is defined in the receiver's superclass and the inherit flag is false" # NoMethodError: undefined method `__dir__' for #<MSpecEnv:0x6efae>
+  fails "Module#const_source_location returns nil when the receiver is a Class, the constant is defined at toplevel and the inherit flag is false" # NoMethodError: undefined method `__dir__' for #<MSpecEnv:0x6efae>
+  fails "Module#const_source_location returns nil when the receiver is a Module, the constant is defined at toplevel and the inherit flag is false" # NoMethodError: undefined method `__dir__' for #<MSpecEnv:0x6efae>
+  fails "Module#const_source_location searches into the receiver superclasses if the inherit flag is true" # NoMethodError: undefined method `__dir__' for #<MSpecEnv:0x6efae>
+  fails "Module#const_source_location with dynamically assigned constants returns path to a toplevel constant when the receiver is a Class" # NoMethodError: undefined method `__dir__' for #<MSpecEnv:0x6efae>
+  fails "Module#const_source_location with dynamically assigned constants returns path to a toplevel constant when the receiver is a Module" # NoMethodError: undefined method `__dir__' for #<MSpecEnv:0x6efae>
+  fails "Module#const_source_location with dynamically assigned constants returns path to the updated value of a constant" # NoMethodError: undefined method `__dir__' for #<MSpecEnv:0x6efae>
+  fails "Module#const_source_location with dynamically assigned constants searches a path in a module included in the immediate class before the superclass" # NoMethodError: undefined method `__dir__' for #<MSpecEnv:0x6efae>
+  fails "Module#const_source_location with dynamically assigned constants searches a path in a module included in the superclass" # NoMethodError: undefined method `__dir__' for #<MSpecEnv:0x6efae>
+  fails "Module#const_source_location with dynamically assigned constants searches a path in the immediate class or module first" # NoMethodError: undefined method `__dir__' for #<MSpecEnv:0x6efae>
+  fails "Module#const_source_location with dynamically assigned constants searches a path in the superclass before a module included in the superclass" # NoMethodError: undefined method `__dir__' for #<MSpecEnv:0x6efae>
+  fails "Module#const_source_location with dynamically assigned constants searches a path in the superclass chain" # NoMethodError: undefined method `__dir__' for #<MSpecEnv:0x6efae>
+  fails "Module#const_source_location with statically assigned constants returns location path a toplevel constant when the receiver is a Class" # NoMethodError: undefined method `__dir__' for #<MSpecEnv:0x6efae>
+  fails "Module#const_source_location with statically assigned constants returns location path a toplevel constant when the receiver is a Module" # NoMethodError: undefined method `__dir__' for #<MSpecEnv:0x6efae>
+  fails "Module#const_source_location with statically assigned constants searches location path a module included in the immediate class before the superclass" # NoMethodError: undefined method `__dir__' for #<MSpecEnv:0x6efae>
+  fails "Module#const_source_location with statically assigned constants searches location path a module included in the superclass" # NoMethodError: undefined method `__dir__' for #<MSpecEnv:0x6efae>
+  fails "Module#const_source_location with statically assigned constants searches location path the immediate class or module first" # NoMethodError: undefined method `__dir__' for #<MSpecEnv:0x6efae>
+  fails "Module#const_source_location with statically assigned constants searches location path the superclass before a module included in the superclass" # NoMethodError: undefined method `__dir__' for #<MSpecEnv:0x6efae>
+  fails "Module#const_source_location with statically assigned constants searches location path the superclass chain" # NoMethodError: undefined method `__dir__' for #<MSpecEnv:0x6efae>
+  fails "Module#constants doesn't returns inherited constants when passed nil"
+  fails "Module#constants returns only public constants"
+  fails "Module#define_method passed { |a,|  } creates a method that does not destructure the passed argument" # Expected [1, 2] == 1 to be truthy but was false
+  fails "Module#define_method raises a TypeError when a Method from a singleton class is defined on another class"
+  fails "Module#define_method raises a TypeError when a Method from one class is defined on an unrelated class"
+  fails "Module#define_method raises a TypeError when an UnboundMethod from a child class is defined on a parent class"
+  fails "Module#define_method raises a TypeError when an UnboundMethod from a singleton class is defined on another class" # Expected TypeError (/can't bind singleton method to a different class/) but no exception was raised (#<Class:0x47ae6> was returned)
+  fails "Module#define_method raises a TypeError when an UnboundMethod from one class is defined on an unrelated class"
+  fails "Module#deprecate_constant accepts multiple symbols and strings as constant names"
+  fails "Module#deprecate_constant raises a NameError when given an undefined name"
+  fails "Module#deprecate_constant returns self"
+  fails "Module#deprecate_constant when accessing the deprecated module does not warn if Warning[:deprecated] is false" # NoMethodError: undefined method `deprecate_constant' for #<Module:0x133e6>
+  fails "Module#deprecate_constant when accessing the deprecated module passes the accessing"
+  fails "Module#deprecate_constant when accessing the deprecated module warns with a message"
+  fails "Module#extend_object extends the given object with its constants and methods by default"
+  fails "Module#extend_object on Class raises a TypeError if calling after rebinded to Class"
+  fails "Module#include doesn't accept no-arguments" # Expected ArgumentError but no exception was raised (#<Module:0x4fbac> was returned)
+  fails "Module#initialize_copy should produce a duped module with inspectable class methods" # NameError: undefined method `hello' for class `Module'
+  fails "Module#initialize_copy should retain singleton methods when duped" # Expected [] to equal ["hello"]
+  fails "Module#instance_method raises a NameError if the method has been undefined"
+  fails "Module#instance_method raises a TypeError if not passed a symbol"
+  fails "Module#instance_method raises a TypeError if the given name is not a string/symbol"
+  fails "Module#method_added is called with a precise caller location with the line of the 'def'" # NoMethodError: undefined method `caller_locations' for #<Module:0xaa8>
+  fails "Module#method_defined? converts the given name to a string using to_str"
+  fails "Module#method_defined? raises a TypeError when the given object is not a string/symbol" # Expected TypeError but no exception was raised (false was returned)
+  fails "Module#method_defined? returns true if a public or private method with the given name is defined in self, self's ancestors or one of self's included modules"
+  fails "Module#method_defined? when passed false as a second optional argument checks only the class itself" # ArgumentError: [Child.method_defined?] wrong number of arguments(2 for 1)
+  fails "Module#method_defined? when passed true as a second optional argument performs a lookup in ancestors" # ArgumentError: [Child.method_defined?] wrong number of arguments(2 for 1)
+  fails "Module#module_eval activates refinements from the eval scope" # NoMethodError: undefined method `foo' for #<ModuleSpecs::NamedClass:0x81f82>
+  fails "Module#module_eval converts a non-string filename to a string using to_str"
+  fails "Module#module_eval converts non string eval-string to string using to_str"
+  fails "Module#module_eval raises a TypeError when the given eval-string can't be converted to string using to_str"
+  fails "Module#module_eval raises a TypeError when the given filename can't be converted to string using to_str"
+  fails "Module#module_eval resolves constants in the caller scope ignoring send"
+  fails "Module#module_eval resolves constants in the caller scope"
+  fails "Module#module_eval uses the optional filename and lineno parameters for error messages"
+  fails "Module#module_function as a toggle (no arguments) in a Module body does not affect module_evaled method definitions also if outside the eval itself"
+  fails "Module#module_function as a toggle (no arguments) in a Module body doesn't affect definitions when inside an eval even if the definitions are outside of it"
+  fails "Module#module_function as a toggle (no arguments) in a Module body has no effect if inside a module_eval if the definitions are outside of it"
+  fails "Module#module_function on Class raises a TypeError if calling after rebinded to Class"
+  fails "Module#module_function with specific method names raises a TypeError when the given names can't be converted to string using to_str"
+  fails "Module#module_function with specific method names tries to convert the given names to strings using to_str"
+  fails "Module#name changes when the module is reachable through a constant path" # Expected nil to match /^#<Module:0x\h+>::N$/
+  fails "Module#name is not nil for a nested module created with the module keyword"
+  fails "Module#name is not nil when assigned to a constant in an anonymous module" # NoMethodError: undefined method `end_with?' for nil
+  fails "Module#name is set after it is removed from a constant under an anonymous module" # Expected nil to match /^#<Module:0x\h+>::Child$/
+  fails "Module#prepend keeps the module in the chain when dupping the class"
+  fails "Module#prepend uses only new module when dupping the module" # Expected [#<Module:0x6c37a>] == [#<Module:0x6c38c>, #<Module:0x6c37a>] to be truthy but was false
+  fails "Module#private with argument array as a single argument sets visibility of given method names" # Expected #<Module:0x7b0e0> to have private instance method 'test1' but it does not
+  fails "Module#private with argument one or more arguments sets visibility of given method names" # Expected #<Module:0x2f186> to have private instance method 'test1' but it does not
+  fails "Module#private_class_method when single argument is passed and is an array sets the visibility of the given methods to private" # Expected NoMethodError but no exception was raised ("foo" was returned)
+  fails "Module#private_constant marked constants in a module raises a NameError when accessed directly from modules that include the module" # Expected NameError but no exception was raised (true was returned)
+  fails "Module#private_constant marked constants sends #const_missing to the original class or module" # Expected true == "Foo" to be truthy but was false
+  fails "Module#private_method_defined? raises a TypeError if passed an Integer" # Expected TypeError but no exception was raised (false was returned)
+  fails "Module#private_method_defined? when passed false as a second optional argument checks only the class itself" # ArgumentError: [Child.private_method_defined?] wrong number of arguments(2 for 1)
+  fails "Module#private_method_defined? when passed true as a second optional argument performs a lookup in ancestors" # ArgumentError: [Child.private_method_defined?] wrong number of arguments(2 for 1)
+  fails "Module#protected with argument array as a single argument sets visibility of given method names" # NoMethodError: undefined method `protected_instance_methods' for #<Module:0x6994a>
+  fails "Module#protected with argument does not clone method from the ancestor when setting to the same visibility in a child" # NoMethodError: undefined method `protected_instance_methods' for #<Module:0xa2d8>
+  fails "Module#protected with argument one or more arguments sets visibility of given method names" # NoMethodError: undefined method `protected_instance_methods' for #<Module:0x33d4a>
+  fails "Module#protected_method_defined? raises a TypeError if passed an Integer" # Expected TypeError but no exception was raised (false was returned)
+  fails "Module#protected_method_defined? when passed false as a second optional argument checks only the class itself" # ArgumentError: [Child.private_method_defined?] wrong number of arguments(2 for 1)
+  fails "Module#protected_method_defined? when passed true as a second optional argument performs a lookup in ancestors" # ArgumentError: [Child.private_method_defined?] wrong number of arguments(2 for 1)
+  fails "Module#public_method_defined? raises a TypeError if passed an Integer" # Expected TypeError but no exception was raised (false was returned)
+  fails "Module#refine and alias aliases a method within a refinement module, but not outside it" # NameError: undefined method `count' for class `'
+  fails "Module#refine and alias_method aliases a method within a refinement module, but not outside it" # NameError: undefined method `count' for class `'
+  fails "Module#refine and instance_methods returns a list of methods including those of the refined module" # Expected ["to_json_format",  "initialize",  "&",  "|",  "*",  "+",  "-",  "<<",  "<=>",  "==",  "[]",  "[]=",  "any?",  "assoc",  "at",  "bsearch_index",  "bsearch",  "cycle",  "clear",  "count",  "initialize_copy",  "collect",  "collect!",  "combination",  "repeated_combination",  "compact",  "compact!",  "concat",  "delete",  "delete_at",  "delete_if",  "difference",  "dig",  "drop",  "dup",  "each",  "each_index",  "empty?",  "eql?",  "fetch",  "fill",  "first",  "flatten",  "flatten!",  "hash",  "include?",  "index",  "insert",  "inspect",  "intersection",  "join",  "keep_if",  "last",  "length",  "map",  "map!",  "max",  "min",  "permutation",  "repeated_permutation",  "pop",  "product",  "push",  "append",  "rassoc",  "reject",  "reject!",  "replace",  "reverse",  "reverse!",  "reverse_each",  "rindex",  "rotate",  "rotate!",  "sample",  "select",  "select!",  "filter",  "filter!",  "shift",  "size",  "shuffle",  "shuffle!",  "slice",  "slice!",  "sort",  "sort!",  "sort_by!",  "take",  "take_while",  "to_a",  "to_ary",  "to_h",  "to_s",  "transpose",  "union",  "uniq",  "uniq!",  "unshift",  "prepend",  "values_at",  "zip",  "instance_variables",  "pack",  "pretty_print",  "pretty_print_cycle",  "__marshal__",  "deconstruct",  "all?",  "chunk",  "chunk_while",  "collect_concat",  "detect",  "drop_while",  "each_cons",  "each_entry",  "each_slice",  "each_with_index",  "each_with_object",  "entries",  "filter_map",  "find",  "find_all",  "find_index",  "flat_map",  "grep",  "grep_v",  "group_by",  "inject",  "lazy",  "enumerator_size",  "max_by",  "member?",  "min_by",  "minmax",  "minmax_by",  "none?",  "one?",  "partition",  "reduce",  "slice_before",  "slice_after",  "slice_when",  "sort_by",  "sum",  "tally",  "to_set",  "require",  "using",  "guard",  "guard_not",  "with_feature",  "without_feature",  "new_fd",  "new_io",  "should",  "should_not",  "version_is",  "ruby_version_is",  "suppress_warning",  "suppress_keyword_warning",  "should_receive",  "should_not_receive",  "stub!",  "mock",  "mock_int",  "mock_numeric",  "evaluate",  "before",  "after",  "describe",  "it",  "it_should_behave_like",  "context",  "specify",  "it_behaves_like",  "ruby_bug",  "conflicts_with",  "big_endian",  "little_endian",  "platform_is",  "platform_is_not",  "quarantine!",  "not_supported_on",  "as_superuser",  "as_user",  "argf",  "argv",  "new_datetime",  "with_timezone",  "fixture",  "flunk",  "cp",  "mkdir_p",  "rm_r",  "touch",  "mock_to_path",  "nan_value",  "infinity_value",  "bignum_value",  "max_long",  "min_long",  "fixnum_max",  "fixnum_min",  "ruby_exe_options",  "resolve_ruby_exe",  "ruby_exe",  "ruby_cmd",  "opal_filter",  "opal_unsupported_filter",  "frozen_error_class",  "pack_format",  "module_specs_public_method_on_object",  "module_specs_private_method_on_object",  "module_specs_protected_method_on_object",  "module_specs_private_method_on_object_for_kernel_public",  "module_specs_public_method_on_object_for_kernel_protected",  "module_specs_public_method_on_object_for_kernel_private",  "unpack_format",  "toplevel_define_other_method",  "some_toplevel_method",  "public_toplevel_method",  "main_public_method",  "main_public_method2",  "main_private_method",  "main_private_method2",  "check_autoload",  "defined_specs_method",  "defined_specs_receiver",  "expect",  "eq",  "pretty_print_instance_variables",  "pretty_print_inspect",  "method_missing",  "=~",  "!~",  "===",  "method",  "methods",  "public_methods",  "Array",  "at_exit",  "caller",  "class",  "copy_instance_variables",  "copy_singleton_methods",  "clone",  "initialize_clone",  "define_singleton_method",  "initialize_dup",  "enum_for",  "to_enum",  "equal?",  "exit",  "extend",  "instance_of?",  "instance_variable_defined?",  "instance_variable_get",  "instance_variable_set",  "remove_instance_variable",  "Integer",  "Float",  "Hash",  "is_a?",  "itself",  "kind_of?",  "lambda",  "load",  "loop",  "nil?",  "object_id",  "printf",  "proc",  "puts",  "p",  "print",  "warn",  "raise",  "fail",  "rand",  "respond_to?",  "respond_to_missing?",  "require_relative",  "require_tree",  "send",  "public_send",  "singleton_class",  "sleep",  "srand",  "String",  "tap",  "to_proc",  "catch",  "throw",  "open",  "yield_self",  "then",  "format",  "sprintf",  "Complex",  "Rational",  "freeze",  "frozen?",  "taint",  "untaint",  "tainted?",  "private_methods",  "private_instance_methods",  "eval",  "node_require",  "Pathname",  "require_remote",  "pretty_inspect",  "pp",  "opal_parse",  "eval_js",  "binding",  "BigDecimal",  "module_specs_public_method_on_kernel",  "module_specs_alias_on_kernel",  "__send__",  "!=",  "__id__",  "!",  "instance_eval",  "instance_exec",  "singleton_method_added",  "singleton_method_removed",  "singleton_method_undefined"] == [] to be truthy but was false
+  fails "Module#refine applies refinements to calls in the refine block" # NoMethodError: undefined method `foo' for "hello"
+  fails "Module#refine does not override methods in subclasses" # Expected "foo from refinement" == "foo from subclass" to be truthy but was false
+  fails "Module#refine for methods accessed indirectly is honored by BasicObject#__send__" # Expected "foo" == "foo from refinement" to be truthy but was false
+  fails "Module#refine for methods accessed indirectly is honored by Kernel#public_method" # NoMethodError: undefined method `public_method' for #<#<Class:0x1b194>:0x1b196>
+  fails "Module#refine for methods accessed indirectly is honored by Kernel#public_send" # Expected "foo" == "foo from refinement" to be truthy but was false
+  fails "Module#refine for methods accessed indirectly is honored by Kernel#send" # Expected "foo" == "foo from refinement" to be truthy but was false
+  fails "Module#refine for methods accessed indirectly is honored by Symbol#to_proc"
+  fails "Module#refine for methods accessed indirectly is honored by string interpolation"
+  fails "Module#refine makes available all refinements from the same module" # NoMethodError: undefined method `dump' for "1"
+  fails "Module#refine method lookup looks in the included modules for builtin methods" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x1aaee>
+  fails "Module#refine method lookup looks in the object singleton class first" # Expected "foo from refinement" == "foo from singleton class" to be truthy but was false
+  fails "Module#refine module inclusion activates all refinements from all ancestors" # NoMethodError: undefined method `to_json_format' for 5
+  fails "Module#refine module inclusion overrides methods of ancestors by methods in descendants" # NoMethodError: undefined method `to_json_format' for 5
+  fails "Module#refine raises ArgumentError if not given a block" # Expected ArgumentError but got: LocalJumpError (no block given)
+  fails "Module#refine raises TypeError if not passed a class" # Expected TypeError but no exception was raised (#<Module:0x1abe8> was returned)
+  fails "Module#remove_const calls #to_str to convert the given name to a String"
+  fails "Module#remove_const raises a TypeError if conversion to a String by calling #to_str fails"
+  fails "Module#ruby2_keywords acceps String as well" # NoMethodError: undefined method `ruby2_keywords' for #<Class:#<Object:0x40040>>
+  fails "Module#ruby2_keywords marks the final hash argument as keyword hash" # NoMethodError: undefined method `ruby2_keywords' for #<Class:#<Object:0x40036>>
+  fails "Module#ruby2_keywords prints warning when a method accepts keyword splat" # NoMethodError: undefined method `ruby2_keywords' for #<Class:#<Object:0x4001e>>
+  fails "Module#ruby2_keywords prints warning when a method accepts keywords" # NoMethodError: undefined method `ruby2_keywords' for #<Class:#<Object:0x40048>>
+  fails "Module#ruby2_keywords prints warning when a method does not accept argument splat" # NoMethodError: undefined method `ruby2_keywords' for #<Class:#<Object:0x4002e>>
+  fails "Module#ruby2_keywords raises NameError when passed not existing method name" # Expected NameError (/undefined method `not_existing'/) but got: NoMethodError (undefined method `ruby2_keywords' for #<Class:#<Object:0x4003a>>)
+  fails "Module#ruby2_keywords raises TypeError when passed not Symbol or String" # Expected TypeError (/is not a symbol nor a string/) but got: NoMethodError (undefined method `ruby2_keywords' for #<Class:#<Object:0x40026>>)
+  fails "Module#ruby2_keywords returns nil" # NoMethodError: undefined method `ruby2_keywords' for #<Class:#<Object:0x40044>>
+  fails "Module#to_s always show the refinement name, even if the module is named" # NoMethodError: undefined method `refine' for ModuleSpecs::RefinementInspect
+  fails "Module#to_s does not call #inspect or #to_s for singleton classes" # Expected "#<Class:#<:0x25bee>>" =~ /\A#<Class:#<#<Class:0x25bf2>:0x\h+>>\z/ to be truthy but was nil
+  fails "Module#to_s for objects includes class name and object ID" # Expected "#<Class:#<ModuleSpecs::NamedClass:0xa424>>" =~ /^#<Class:#<ModuleSpecs::NamedClass:0x\h+>>$/ to be truthy but was nil
+  fails "Module#to_s for the singleton class of an object of an anonymous class" # Expected "#<Class:#<:0xa450>>" == "#<Class:#<#<Class:0xa454>:0xa450>>" to be truthy but was false
+  fails "Module#to_s works with an anonymous class" # Expected "#<Class:0xa482>" =~ /^#<Class:0x\h+>$/ to be truthy but was nil
+  fails "Module#to_s works with an anonymous module" # Expected "#<Module:0xa4ae>" =~ /^#<Module:0x\h+>$/ to be truthy but was nil
+  fails "Module#undef_method raises a NameError when passed a missing name for a class" # Expected NameError (/undefined method `not_exist' for class `#<Class:0xa514>'/) but got: NameError (method 'not_exist' not defined in )
+  fails "Module#undef_method raises a NameError when passed a missing name for a metaclass" # Expected NameError (/undefined method `not_exist' for class `String'/) but got: NameError (method 'not_exist' not defined in )
+  fails "Module#undef_method raises a NameError when passed a missing name for a module" # Expected NameError (/undefined method `not_exist' for module `#<Module:0xa502>'/) but got: NameError (method 'not_exist' not defined in )
+  fails "Module#undef_method raises a NameError when passed a missing name for a singleton class" # Expected NameError (/undefined method `not_exist' for class `#<Class:#<:0xa51a>>'/) but got: NameError (method 'not_exist' not defined in )
+  fails "Module#using does not accept class" # Expected TypeError but no exception was raised (#<Module:0x3dd76> was returned)
+  fails "Module#using imports class refinements from module into the current class/module" # NoMethodError: undefined method `foo' for 1
+  fails "Module#using raises TypeError if passed something other than module" # Expected TypeError but no exception was raised (#<Module:0x3dd66> was returned)
+  fails "Module#using scope of refinement is active for block called via instance_eval" # TypeError: can't define singleton
+  fails "Module#using scope of refinement is active for block called via instance_exec" # NoMethodError: undefined method `foo' for 1
+  fails "Module#using scope of refinement is active for class defined via Class.new {}" # NoMethodError: undefined method `foo' for 1
+  fails "Module#using scope of refinement is active for module defined via Module.new {}" # NoMethodError: undefined method `foo' for 1
+  fails "Module#using works in classes too" # NoMethodError: undefined method `foo' for 1
+  fails_badly "Module#refine for methods accessed indirectly is honored by Kernel#instance_method" # NameError: undefined method `foo' for class `'
+  fails_badly "Module#refine for methods accessed indirectly is honored by Kernel#method" # NameError: undefined method `foo' for class `#<Class:0x581e4>'
+  fails_badly "Module#refine for methods accessed indirectly is honored by Kernel#respond_to?" # Expected false == true to be truthy but was false
+end
diff --git a/spec/filters/bugs/nilclass.rb b/spec/filters/bugs/nilclass.rb
new file mode 100644
index 00000000..536a6431
--- /dev/null
+++ b/spec/filters/bugs/nilclass.rb
@@ -0,0 +1,4 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "NilClass" do
+  fails "NilClass#=~ returns nil matching any object" # Expected false to be nil
+end
diff --git a/spec/filters/bugs/numeric.rb b/spec/filters/bugs/numeric.rb
new file mode 100644
index 00000000..79bdca5e
--- /dev/null
+++ b/spec/filters/bugs/numeric.rb
@@ -0,0 +1,12 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "Numeric" do
+  fails "Numeric#clone does not change frozen status" # Expected false == true to be truthy but was false
+  fails "Numeric#clone raises ArgumentError if passed freeze: false" # Expected ArgumentError (/can't unfreeze/) but no exception was raised (1 was returned)
+  fails "Numeric#dup does not change frozen status" # Expected false == true to be truthy but was false
+  fails "Numeric#remainder returns the result of calling self#% with other - other if self is greater than 0 and other is less than 0"
+  fails "Numeric#remainder returns the result of calling self#% with other - other if self is less than 0 and other is greater than 0"
+  fails "Numeric#remainder returns the result of calling self#% with other if self and other are greater than 0"
+  fails "Numeric#remainder returns the result of calling self#% with other if self and other are less than 0"
+  fails "Numeric#remainder returns the result of calling self#% with other if self is 0"
+  fails "Numeric#singleton_method_added raises a TypeError when trying to define a singleton method on a Numeric"
+end
diff --git a/spec/filters/bugs/objectspace.rb b/spec/filters/bugs/objectspace.rb
new file mode 100644
index 00000000..6e80249f
--- /dev/null
+++ b/spec/filters/bugs/objectspace.rb
@@ -0,0 +1,67 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "ObjectSpace" do
+  fails "ObjectSpace._id2ref converts an object id to a reference to the object" # NoMethodError: undefined method `_id2ref' for ObjectSpace
+  fails "ObjectSpace._id2ref raises RangeError when an object could not be found" # Expected RangeError but got: NoMethodError (undefined method `_id2ref' for ObjectSpace)
+  fails "ObjectSpace._id2ref retrieves a String by object_id" # NoMethodError: undefined method `_id2ref' for ObjectSpace
+  fails "ObjectSpace._id2ref retrieves a Symbol by object_id" # NoMethodError: undefined method `_id2ref' for ObjectSpace
+  fails "ObjectSpace._id2ref retrieves a frozen literal String by object_id" # NoMethodError: undefined method `_id2ref' for ObjectSpace
+  fails "ObjectSpace._id2ref retrieves a large Integer by object_id" # NoMethodError: undefined method `_id2ref' for ObjectSpace
+  fails "ObjectSpace._id2ref retrieves a small Integer by object_id" # NoMethodError: undefined method `_id2ref' for ObjectSpace
+  fails "ObjectSpace._id2ref retrieves an Encoding by object_id" # NoMethodError: undefined method `_id2ref' for ObjectSpace
+  fails "ObjectSpace._id2ref retrieves false by object_id" # NoMethodError: undefined method `_id2ref' for ObjectSpace
+  fails "ObjectSpace._id2ref retrieves nil by object_id" # NoMethodError: undefined method `_id2ref' for ObjectSpace
+  fails "ObjectSpace._id2ref retrieves true by object_id" # NoMethodError: undefined method `_id2ref' for ObjectSpace
+  fails "ObjectSpace.define_finalizer allows multiple finalizers with different 'callables' to be defined" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x2129a>
+  fails "ObjectSpace.define_finalizer calls a finalizer at exit even if it is indirectly self-referencing" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x2129a>
+  fails "ObjectSpace.define_finalizer calls a finalizer at exit even if it is self-referencing" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x2129a>
+  fails "ObjectSpace.define_finalizer calls a finalizer defined in a finalizer running at exit" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x2129a>
+  fails "ObjectSpace.define_finalizer calls finalizer on process termination" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x2129a>
+  fails "ObjectSpace.define_finalizer warns if the finalizer has the object as the receiver" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x2129a>
+  fails "ObjectSpace.define_finalizer warns if the finalizer is a method bound to the receiver" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x2129a>
+  fails "ObjectSpace.define_finalizer warns if the finalizer was a block in the receiver" # NoMethodError: undefined method `tmp' for #<MSpecEnv:0x2129a>
+  fails "ObjectSpace.each_object calls the block once for each class, module in the Ruby process" # NoMethodError: undefined method `each_object' for ObjectSpace
+  fails "ObjectSpace.each_object calls the block once for each living, non-immediate object in the Ruby process" # NoMethodError: undefined method `each_object' for ObjectSpace
+  fails "ObjectSpace.each_object finds an object captured in an at_exit handler" # NoMethodError: undefined method `each_object' for ObjectSpace
+  fails "ObjectSpace.each_object finds an object captured in finalizer" # NoMethodError: undefined method `each_object' for ObjectSpace
+  fails "ObjectSpace.each_object finds an object stored in a fiber local" # NoMethodError: undefined method `each_object' for ObjectSpace
+  fails "ObjectSpace.each_object finds an object stored in a global variable" # NoMethodError: undefined method `each_object' for ObjectSpace
+  fails "ObjectSpace.each_object finds an object stored in a hash key" # NoMethodError: undefined method `each_object' for ObjectSpace
+  fails "ObjectSpace.each_object finds an object stored in a hash value" # NoMethodError: undefined method `each_object' for ObjectSpace
+  fails "ObjectSpace.each_object finds an object stored in a local variable captured in a Kernel#binding" # NoMethodError: undefined method `binding' for #<MSpecEnv:0x14f0c>
+  fails "ObjectSpace.each_object finds an object stored in a local variable captured in a Proc#binding" # NoMethodError: undefined method `each_object' for ObjectSpace
+  fails "ObjectSpace.each_object finds an object stored in a local variable captured in a block explicitly" # NoMethodError: undefined method `each_object' for ObjectSpace
+  fails "ObjectSpace.each_object finds an object stored in a local variable captured in a block implicitly" # NoMethodError: undefined method `each_object' for ObjectSpace
+  fails "ObjectSpace.each_object finds an object stored in a local variable captured in by a method defined with a block" # NoMethodError: undefined method `each_object' for ObjectSpace
+  fails "ObjectSpace.each_object finds an object stored in a local variable set in a binding manually" # NoMethodError: undefined method `binding' for #<MSpecEnv:0x14f0c>
+  fails "ObjectSpace.each_object finds an object stored in a local variable" # NoMethodError: undefined method `each_object' for ObjectSpace
+  fails "ObjectSpace.each_object finds an object stored in a second-level constant" # NoMethodError: undefined method `each_object' for ObjectSpace
+  fails "ObjectSpace.each_object finds an object stored in a thread local" # NotImplementedError: Thread creation not available
+  fails "ObjectSpace.each_object finds an object stored in a top-level constant" # NoMethodError: undefined method `each_object' for ObjectSpace
+  fails "ObjectSpace.each_object finds an object stored in an array" # NoMethodError: undefined method `each_object' for ObjectSpace
+  fails "ObjectSpace.each_object finds an object stored in an instance variable" # NoMethodError: undefined method `each_object' for ObjectSpace
+  fails "ObjectSpace.each_object on singleton classes does not walk hidden metaclasses" # NoMethodError: undefined method `each_object' for ObjectSpace
+  fails "ObjectSpace.each_object on singleton classes walks singleton classes" # NoMethodError: undefined method `each_object' for ObjectSpace
+  fails "ObjectSpace.each_object returns an enumerator if not given a block" # NoMethodError: undefined method `each_object' for ObjectSpace
+  fails "ObjectSpace.each_object walks a class and its normal descendants when passed the class's singleton class" # NoMethodError: undefined method `each_object' for ObjectSpace
+  fails "ObjectSpace.garbage_collect accepts keyword arguments" # NoMethodError: undefined method `garbage_collect' for ObjectSpace
+  fails "ObjectSpace.garbage_collect always returns nil" # NoMethodError: undefined method `garbage_collect' for ObjectSpace
+  fails "ObjectSpace.garbage_collect can be invoked without any exceptions" # Expected to not get Exception but got: NoMethodError (undefined method `garbage_collect' for ObjectSpace)
+  fails "ObjectSpace.garbage_collect ignores the supplied block" # Expected to not get Exception but got: NoMethodError (undefined method `garbage_collect' for ObjectSpace)
+  fails "ObjectSpace::WeakMap#[] matches using identity semantics" # Expected "x" == nil to be truthy but was false
+  fails "ObjectSpace::WeakMap#each is correct" # NotImplementedError: #each can't be implemented on top of JS interfaces
+  fails "ObjectSpace::WeakMap#each_key is correct" # NotImplementedError: #each_key can't be implemented on top of JS interfaces
+  fails "ObjectSpace::WeakMap#each_key must take a block, except when empty" # NotImplementedError: #each can't be implemented on top of JS interfaces
+  fails "ObjectSpace::WeakMap#each_pair is correct" # NotImplementedError: #each_pair can't be implemented on top of JS inerfaces
+  fails "ObjectSpace::WeakMap#each_value is correct" # NotImplementedError: #each_value can't be implemented on top of JS interfaces
+  fails "ObjectSpace::WeakMap#include? matches using identity semantics" # Exception: Invalid value used as weak map key
+  fails "ObjectSpace::WeakMap#include? reports true if the pair exists and the value is nil" # NotImplementedError: #size can't be implemented on top of JS interfaces
+  fails "ObjectSpace::WeakMap#inspect displays object pointers in output" # Expected "#<ObjectSpace::WeakMap:0x1ceec>" =~ /^\#<ObjectSpace::WeakMap:0x\h+>$/ to be truthy but was nil
+  fails "ObjectSpace::WeakMap#key? matches using identity semantics" # Exception: Invalid value used as weak map key
+  fails "ObjectSpace::WeakMap#key? reports true if the pair exists and the value is nil" # NotImplementedError: #size can't be implemented on top of JS interfaces
+  fails "ObjectSpace::WeakMap#keys is correct" # NotImplementedError: #keys can't be implemented on top of JS interfaces
+  fails "ObjectSpace::WeakMap#length is correct" # NotImplementedError: #length can't be implemented on top of JS interfaces
+  fails "ObjectSpace::WeakMap#member? matches using identity semantics" # Exception: Invalid value used as weak map key
+  fails "ObjectSpace::WeakMap#member? reports true if the pair exists and the value is nil" # NotImplementedError: #size can't be implemented on top of JS interfaces
+  fails "ObjectSpace::WeakMap#size is correct" # NotImplementedError: #size can't be implemented on top of JS interfaces
+  fails "ObjectSpace::WeakMap#values is correct" # NotImplementedError: #values can't be implemented on top of JS interfaces
+end
diff --git a/spec/filters/bugs/openstruct.rb b/spec/filters/bugs/openstruct.rb
new file mode 100644
index 00000000..4e26bcaa
--- /dev/null
+++ b/spec/filters/bugs/openstruct.rb
@@ -0,0 +1,8 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "OpenStruct" do
+  fails "OpenStruct#to_h with block coerces returned pair to Array with #to_ary" # Expected {"name"=>"John Smith", "age"=>70, "pension"=>300} == {"b"=>"b"} to be truthy but was false
+  fails "OpenStruct#to_h with block converts [key, value] pairs returned by the block to a hash" # Expected {"name"=>"John Smith", "age"=>70, "pension"=>300} == {"name"=>"John SmithJohn Smith", "age"=>140, "pension"=>600} to be truthy but was false
+  fails "OpenStruct#to_h with block does not coerce returned pair to Array with #to_a" # Expected TypeError (/wrong element type MockObject/) but no exception was raised ({"name"=>"John Smith", "age"=>70, "pension"=>300} was returned)
+  fails "OpenStruct#to_h with block raises ArgumentError if block returns longer or shorter array" # Expected ArgumentError (/element has wrong array length/) but no exception was raised ({"name"=>"John Smith", "age"=>70, "pension"=>300} was returned)
+  fails "OpenStruct#to_h with block raises TypeError if block returns something other than Array" # Expected TypeError (/wrong element type String/) but no exception was raised ({"name"=>"John Smith", "age"=>70, "pension"=>300} was returned)
+end
diff --git a/spec/filters/bugs/pack_unpack.rb b/spec/filters/bugs/pack_unpack.rb
new file mode 100644
index 00000000..b85a371b
--- /dev/null
+++ b/spec/filters/bugs/pack_unpack.rb
@@ -0,0 +1,125 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "String#unpack" do
+  fails "String#unpack with format 'A' decodes into raw (ascii) string values" # Expected "UTF-16LE" to equal "ASCII-8BIT"
+  fails "String#unpack with format 'H' should make strings with US_ASCII encoding" # Expected #<Encoding:UTF-16LE> to equal #<Encoding:ASCII-8BIT (dummy)>
+  fails "String#unpack with format 'Q' adds nil for each element requested beyond the end of the String" # Expected [7523094288207668000, nil, nil] to be computed by "abcdefgh".unpack from "Q3" (computed [7523094288207667000, nil, nil] instead)
+  fails "String#unpack with format 'Q' decodes one long for a single format character" # Expected [7523094288207667000] to equal [7523094288207668000]
+  fails "String#unpack with format 'Q' decodes the number of longs requested by the count modifier" # Expected [7523094283929477000, 7378418357791582000] to equal [7523094283929478000, 7378418357791582000]
+  fails "String#unpack with format 'Q' decodes two longs for two format characters" # Expected [7233738012216484000, 7233733596956420000] to equal [7233738012216485000, 7233733596956420000]
+  fails "String#unpack with format 'Q' ignores NULL bytes between directives" # Expected [7523094288207667000, 7233738012216484000] to equal [7523094288207668000, 7233738012216485000]
+  fails "String#unpack with format 'Q' ignores spaces between directives" # Expected [7523094288207667000, 7233738012216484000] to equal [7523094288207668000, 7233738012216485000]
+  fails "String#unpack with format 'Q' with modifier '<' decodes one long for a single format character" # Expected [7523094288207667000] to equal [7523094288207668000]
+  fails "String#unpack with format 'Q' with modifier '<' decodes the number of longs requested by the count modifier" # Expected [7523094283929477000, 7378418357791582000] to equal [7523094283929478000, 7378418357791582000]
+  fails "String#unpack with format 'Q' with modifier '<' decodes two longs for two format characters" # Expected [7233738012216484000, 7233733596956420000] to equal [7233738012216485000, 7233733596956420000]
+  fails "String#unpack with format 'Q' with modifier '<' ignores NULL bytes between directives" # Expected [7523094288207667000, 7233738012216484000] to equal [7523094288207668000, 7233738012216485000]
+  fails "String#unpack with format 'Q' with modifier '<' ignores spaces between directives" # Expected [7523094288207667000, 7233738012216484000] to equal [7523094288207668000, 7233738012216485000]
+  fails "String#unpack with format 'Q' with modifier '>' decodes one long for a single format character" # Expected [7523094288207667000] to equal [7523094288207668000]
+  fails "String#unpack with format 'Q' with modifier '>' decodes the number of longs requested by the count modifier" # Expected [7523094283929477000, 7378418357791582000] to equal [7523094283929478000, 7378418357791582000]
+  fails "String#unpack with format 'Q' with modifier '>' decodes two longs for two format characters" # Expected [7233738012216484000, 7233733596956420000] to equal [7233738012216485000, 7233733596956420000]
+  fails "String#unpack with format 'Q' with modifier '>' ignores NULL bytes between directives" # Expected [7523094288207667000, 7233738012216484000] to equal [7523094288207668000, 7233738012216485000]
+  fails "String#unpack with format 'Q' with modifier '>' ignores spaces between directives" # Expected [7523094288207667000, 7233738012216484000] to equal [7523094288207668000, 7233738012216485000]
+  fails "String#unpack with format 'U' decodes UTF-8 max codepoints" # Expected [65536] to be computed by "𐀀".unpack from "U" (computed [55296, 56320] instead)
+  fails "String#unpack with format 'U' does not decode any items for directives exceeding the input string size" # ArgumentError: malformed UTF-8 character
+  fails "String#unpack with format 'a' decodes into raw (ascii) string values" # Expected "UTF-16LE" to equal "ASCII-8BIT"
+  fails "String#unpack with format 'b' decodes into US-ASCII string values" # Expected "UTF-16LE" to equal "US-ASCII"
+  fails "String#unpack with format 'h' should make strings with US_ASCII encoding" # Expected #<Encoding:UTF-16LE> to equal #<Encoding:ASCII-8BIT (dummy)>
+  fails "String#unpack with format 'm' produces binary strings" # Expected #<Encoding:UTF-16LE> to equal #<Encoding:ASCII-8BIT>
+  fails "String#unpack with format 'q' adds nil for each element requested beyond the end of the String" # Expected [7523094288207668000, nil, nil] to be computed by "abcdefgh".unpack from "q3" (computed [7523094288207667000, nil, nil] instead)
+  fails "String#unpack with format 'q' decodes a long with most significant bit set as a negative number" # Expected [-71870673923813380] to equal [-71870673923814400]
+  fails "String#unpack with format 'q' decodes one long for a single format character" # Expected [7523094288207667000] to equal [7523094288207668000]
+  fails "String#unpack with format 'q' decodes the number of longs requested by the count modifier" # Expected [7523094283929477000, 7378418357791582000] to equal [7523094283929478000, 7378418357791582000]
+  fails "String#unpack with format 'q' decodes two longs for two format characters" # Expected [7233738012216484000, 7233733596956420000] to equal [7233738012216485000, 7233733596956420000]
+  fails "String#unpack with format 'q' ignores NULL bytes between directives" # Expected [7523094288207667000, 7233738012216484000] to equal [7523094288207668000, 7233738012216485000]
+  fails "String#unpack with format 'q' ignores spaces between directives" # Expected [7523094288207667000, 7233738012216484000] to equal [7523094288207668000, 7233738012216485000]
+  fails "String#unpack with format 'q' with modifier '<' decodes a long with most significant bit set as a negative number" # Expected [-71870673923813380] to equal [-71870673923814400]
+  fails "String#unpack with format 'q' with modifier '<' decodes one long for a single format character" # Expected [7523094288207667000] to equal [7523094288207668000]
+  fails "String#unpack with format 'q' with modifier '<' decodes the number of longs requested by the count modifier" # Expected [7523094283929477000, 7378418357791582000] to equal [7523094283929478000, 7378418357791582000]
+  fails "String#unpack with format 'q' with modifier '<' decodes two longs for two format characters" # Expected [7233738012216484000, 7233733596956420000] to equal [7233738012216485000, 7233733596956420000]
+  fails "String#unpack with format 'q' with modifier '<' ignores NULL bytes between directives" # Expected [7523094288207667000, 7233738012216484000] to equal [7523094288207668000, 7233738012216485000]
+  fails "String#unpack with format 'q' with modifier '<' ignores spaces between directives" # Expected [7523094288207667000, 7233738012216484000] to equal [7523094288207668000, 7233738012216485000]
+  fails "String#unpack with format 'q' with modifier '>' decodes a long with most significant bit set as a negative number" # Expected [-71870673923813380] to equal [-71870673923814400]
+  fails "String#unpack with format 'q' with modifier '>' decodes one long for a single format character" # Expected [7523094288207667000] to equal [7523094288207668000]
+  fails "String#unpack with format 'q' with modifier '>' decodes the number of longs requested by the count modifier" # Expected [7523094283929477000, 7378418357791582000] to equal [7523094283929478000, 7378418357791582000]
+  fails "String#unpack with format 'q' with modifier '>' decodes two longs for two format characters" # Expected [7233738012216484000, 7233733596956420000] to equal [7233738012216485000, 7233733596956420000]
+  fails "String#unpack with format 'q' with modifier '>' ignores NULL bytes between directives" # Expected [7523094288207667000, 7233738012216484000] to equal [7523094288207668000, 7233738012216485000]
+  fails "String#unpack with format 'q' with modifier '>' ignores spaces between directives" # Expected [7523094288207667000, 7233738012216484000] to equal [7523094288207668000, 7233738012216485000]
+  fails "String#unpack with format 'u' decodes into raw (ascii) string values" # Expected "UTF-16LE" to equal "ASCII-8BIT"
+end
+
+opal_filter "Array#pack" do
+  fails "Array#pack with format 'A' calls #to_str to coerce the directives string" # RuntimeError: Unsupported pack directive "x" (no chunk reader defined)
+  fails "Array#pack with format 'A' returns a string in encoding of common to the concatenated results" # RuntimeError: Unsupported pack directive "U" (no chunk reader defined)
+  fails "Array#pack with format 'C' calls #to_str to coerce the directives string" # RuntimeError: Unsupported pack directive "x" (no chunk reader defined)
+  fails "Array#pack with format 'L' calls #to_str to coerce the directives string" # RuntimeError: Unsupported pack directive "x" (no chunk reader defined)
+  fails "Array#pack with format 'L' with modifier '>' and '!' calls #to_int to convert the pack argument to an Integer" # Mock 'to_int' expected to receive to_int("any_args") exactly 1 times but received it 0 times
+  fails "Array#pack with format 'L' with modifier '>' and '!' encodes a Float truncated as an Integer" # RuntimeError: Unsupported pack directive "L>" (no chunk reader defined)
+  fails "Array#pack with format 'L' with modifier '>' and '!' encodes all remaining elements when passed the '*' modifier" # RuntimeError: Unsupported pack directive "L>" (no chunk reader defined)
+  fails "Array#pack with format 'L' with modifier '>' and '!' encodes the least significant 32 bits of a negative number" # RuntimeError: Unsupported pack directive "L>" (no chunk reader defined)
+  fails "Array#pack with format 'L' with modifier '>' and '!' encodes the least significant 32 bits of a positive number" # RuntimeError: Unsupported pack directive "L>" (no chunk reader defined)
+  fails "Array#pack with format 'L' with modifier '>' and '!' encodes the number of array elements specified by the count modifier" # RuntimeError: Unsupported pack directive "L>" (no chunk reader defined)
+  fails "Array#pack with format 'L' with modifier '>' and '!' ignores NULL bytes between directives" # RuntimeError: Unsupported pack directive "L>" (no chunk reader defined)
+  fails "Array#pack with format 'L' with modifier '>' and '!' ignores spaces between directives" # RuntimeError: Unsupported pack directive "L>" (no chunk reader defined)
+  fails "Array#pack with format 'L' with modifier '>' and '_' calls #to_int to convert the pack argument to an Integer" # Mock 'to_int' expected to receive to_int("any_args") exactly 1 times but received it 0 times
+  fails "Array#pack with format 'L' with modifier '>' and '_' encodes a Float truncated as an Integer" # RuntimeError: Unsupported pack directive "L>" (no chunk reader defined)
+  fails "Array#pack with format 'L' with modifier '>' and '_' encodes all remaining elements when passed the '*' modifier" # RuntimeError: Unsupported pack directive "L>" (no chunk reader defined)
+  fails "Array#pack with format 'L' with modifier '>' and '_' encodes the least significant 32 bits of a negative number" # RuntimeError: Unsupported pack directive "L>" (no chunk reader defined)
+  fails "Array#pack with format 'L' with modifier '>' and '_' encodes the least significant 32 bits of a positive number" # RuntimeError: Unsupported pack directive "L>" (no chunk reader defined)
+  fails "Array#pack with format 'L' with modifier '>' and '_' encodes the number of array elements specified by the count modifier" # RuntimeError: Unsupported pack directive "L>" (no chunk reader defined)
+  fails "Array#pack with format 'L' with modifier '>' and '_' ignores NULL bytes between directives" # RuntimeError: Unsupported pack directive "L>" (no chunk reader defined)
+  fails "Array#pack with format 'L' with modifier '>' and '_' ignores spaces between directives" # RuntimeError: Unsupported pack directive "L>" (no chunk reader defined)
+  fails "Array#pack with format 'L' with modifier '>' calls #to_int to convert the pack argument to an Integer" # Mock 'to_int' expected to receive 'to_int' exactly 1 times but received it 0 times
+  fails "Array#pack with format 'L' with modifier '>' encodes a Float truncated as an Integer" # RuntimeError: Unsupported pack directive "L>" (no chunk reader defined)
+  fails "Array#pack with format 'L' with modifier '>' encodes all remaining elements when passed the '*' modifier" # RuntimeError: Unsupported pack directive "L>" (no chunk reader defined)
+  fails "Array#pack with format 'L' with modifier '>' encodes the least significant 32 bits of a negative number" # RuntimeError: Unsupported pack directive "L>" (no chunk reader defined)
+  fails "Array#pack with format 'L' with modifier '>' encodes the least significant 32 bits of a positive number" # RuntimeError: Unsupported pack directive "L>" (no chunk reader defined)
+  fails "Array#pack with format 'L' with modifier '>' encodes the number of array elements specified by the count modifier" # RuntimeError: Unsupported pack directive "L>" (no chunk reader defined)
+  fails "Array#pack with format 'L' with modifier '>' ignores NULL bytes between directives" # RuntimeError: Unsupported pack directive "L>" (no chunk reader defined)
+  fails "Array#pack with format 'L' with modifier '>' ignores spaces between directives" # RuntimeError: Unsupported pack directive "L>" (no chunk reader defined)
+  fails "Array#pack with format 'U' calls #to_str to coerce the directives string" # RuntimeError: Unsupported pack directive "x" (no chunk reader defined)
+  fails "Array#pack with format 'U' encodes values larger than UTF-8 max codepoints" # Exception: Invalid code point 1114112
+  fails "Array#pack with format 'U' raises a TypeError if #to_int does not return an Integer" # Expected TypeError but no exception was raised ("\u0005" was returned)
+  fails "Array#pack with format 'a' calls #to_str to coerce the directives string" # RuntimeError: Unsupported pack directive "x" (no chunk reader defined)
+  fails "Array#pack with format 'a' returns a string in encoding of common to the concatenated results" # RuntimeError: Unsupported pack directive "U" (no chunk reader defined)
+  fails "Array#pack with format 'c' calls #to_str to coerce the directives string" # RuntimeError: Unsupported pack directive "x" (no chunk reader defined)
+  fails "Array#pack with format 'l' calls #to_str to coerce the directives string" # RuntimeError: Unsupported pack directive "x" (no chunk reader defined)
+  fails "Array#pack with format 'l' with modifier '>' and '!' calls #to_int to convert the pack argument to an Integer" # Mock 'to_int' expected to receive to_int("any_args") exactly 1 times but received it 0 times
+  fails "Array#pack with format 'l' with modifier '>' and '!' encodes a Float truncated as an Integer" # RuntimeError: Unsupported pack directive "l>" (no chunk reader defined)
+  fails "Array#pack with format 'l' with modifier '>' and '!' encodes all remaining elements when passed the '*' modifier" # RuntimeError: Unsupported pack directive "l>" (no chunk reader defined)
+  fails "Array#pack with format 'l' with modifier '>' and '!' encodes the least significant 32 bits of a negative number" # RuntimeError: Unsupported pack directive "l>" (no chunk reader defined)
+  fails "Array#pack with format 'l' with modifier '>' and '!' encodes the least significant 32 bits of a positive number" # RuntimeError: Unsupported pack directive "l>" (no chunk reader defined)
+  fails "Array#pack with format 'l' with modifier '>' and '!' encodes the number of array elements specified by the count modifier" # RuntimeError: Unsupported pack directive "l>" (no chunk reader defined)
+  fails "Array#pack with format 'l' with modifier '>' and '!' ignores NULL bytes between directives" # RuntimeError: Unsupported pack directive "l>" (no chunk reader defined)
+  fails "Array#pack with format 'l' with modifier '>' and '!' ignores spaces between directives" # RuntimeError: Unsupported pack directive "l>" (no chunk reader defined)
+  fails "Array#pack with format 'l' with modifier '>' and '_' calls #to_int to convert the pack argument to an Integer" # Mock 'to_int' expected to receive to_int("any_args") exactly 1 times but received it 0 times
+  fails "Array#pack with format 'l' with modifier '>' and '_' encodes a Float truncated as an Integer" # RuntimeError: Unsupported pack directive "l>" (no chunk reader defined)
+  fails "Array#pack with format 'l' with modifier '>' and '_' encodes all remaining elements when passed the '*' modifier" # RuntimeError: Unsupported pack directive "l>" (no chunk reader defined)
+  fails "Array#pack with format 'l' with modifier '>' and '_' encodes the least significant 32 bits of a negative number" # RuntimeError: Unsupported pack directive "l>" (no chunk reader defined)
+  fails "Array#pack with format 'l' with modifier '>' and '_' encodes the least significant 32 bits of a positive number" # RuntimeError: Unsupported pack directive "l>" (no chunk reader defined)
+  fails "Array#pack with format 'l' with modifier '>' and '_' encodes the number of array elements specified by the count modifier" # RuntimeError: Unsupported pack directive "l>" (no chunk reader defined)
+  fails "Array#pack with format 'l' with modifier '>' and '_' ignores NULL bytes between directives" # RuntimeError: Unsupported pack directive "l>" (no chunk reader defined)
+  fails "Array#pack with format 'l' with modifier '>' and '_' ignores spaces between directives" # RuntimeError: Unsupported pack directive "l>" (no chunk reader defined)
+  fails "Array#pack with format 'l' with modifier '>' calls #to_int to convert the pack argument to an Integer" # Mock 'to_int' expected to receive 'to_int' exactly 1 times but received it 0 times
+  fails "Array#pack with format 'l' with modifier '>' encodes a Float truncated as an Integer" # RuntimeError: Unsupported pack directive "l>" (no chunk reader defined)
+  fails "Array#pack with format 'l' with modifier '>' encodes all remaining elements when passed the '*' modifier" # RuntimeError: Unsupported pack directive "l>" (no chunk reader defined)
+  fails "Array#pack with format 'l' with modifier '>' encodes the least significant 32 bits of a negative number" # RuntimeError: Unsupported pack directive "l>" (no chunk reader defined)
+  fails "Array#pack with format 'l' with modifier '>' encodes the least significant 32 bits of a positive number" # RuntimeError: Unsupported pack directive "l>" (no chunk reader defined)
+  fails "Array#pack with format 'l' with modifier '>' encodes the number of array elements specified by the count modifier" # RuntimeError: Unsupported pack directive "l>" (no chunk reader defined)
+  fails "Array#pack with format 'l' with modifier '>' ignores NULL bytes between directives" # RuntimeError: Unsupported pack directive "l>" (no chunk reader defined)
+  fails "Array#pack with format 'l' with modifier '>' ignores spaces between directives" # RuntimeError: Unsupported pack directive "l>" (no chunk reader defined)
+  fails "Array#pack with format 'u' appends a newline to the end of the encoded string" # RuntimeError: Unsupported pack directive "u" (no chunk reader defined)
+  fails "Array#pack with format 'u' calls #to_str to coerce the directives string" # RuntimeError: Unsupported pack directive "x" (no chunk reader defined)
+  fails "Array#pack with format 'u' calls #to_str to convert an object to a String" # Mock 'pack m string' expected to receive 'to_str' exactly 1 times but received it 0 times
+  fails "Array#pack with format 'u' emits a newline after complete groups of count / 3 input characters when passed a count modifier" # RuntimeError: Unsupported pack directive "u" (no chunk reader defined)
+  fails "Array#pack with format 'u' encodes 1, 2, or 3 characters in 4 output characters (uuencoding)" # RuntimeError: Unsupported pack directive "u" (no chunk reader defined)
+  fails "Array#pack with format 'u' encodes all ascii characters" # RuntimeError: Unsupported pack directive "u" (no chunk reader defined)
+  fails "Array#pack with format 'u' encodes an empty string as an empty string" # RuntimeError: Unsupported pack directive "u" (no chunk reader defined)
+  fails "Array#pack with format 'u' encodes one element per directive" # RuntimeError: Unsupported pack directive "u" (no chunk reader defined)
+  fails "Array#pack with format 'u' ignores whitespace in the format string" # RuntimeError: Unsupported pack directive "u" (no chunk reader defined)
+  fails "Array#pack with format 'u' implicitly has a count of 45 when passed '*', 0, 1, 2 or no count modifier" # RuntimeError: Unsupported pack directive "u" (no chunk reader defined)
+  fails "Array#pack with format 'u' prepends the length of each segment of the input string as the first character (+32) in each line of the output" # RuntimeError: Unsupported pack directive "u" (no chunk reader defined)
+  fails "Array#pack with format 'u' raises a TypeError if #to_str does not return a String" # RuntimeError: Unsupported pack directive "u" (no chunk reader defined)
+  fails "Array#pack with format 'u' raises a TypeError if passed an Integer" # RuntimeError: Unsupported pack directive "u" (no chunk reader defined)
+  fails "Array#pack with format 'u' raises a TypeError if passed nil" # RuntimeError: Unsupported pack directive "u" (no chunk reader defined)
+  fails "Array#pack with format 'u' raises an ArgumentError if there are fewer elements than the format requires" # RuntimeError: Unsupported pack directive "u" (no chunk reader defined)
+  fails "Array#pack with format 'u' sets the output string to US-ASCII encoding" # RuntimeError: Unsupported pack directive "u" (no chunk reader defined)
+end
diff --git a/spec/filters/bugs/pathname.rb b/spec/filters/bugs/pathname.rb
new file mode 100644
index 00000000..7772ed03
--- /dev/null
+++ b/spec/filters/bugs/pathname.rb
@@ -0,0 +1,10 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "Pathname" do
+  fails "Pathname#/ appends a pathname to self" # NoMethodError: undefined method `/' for /usr
+  fails "Pathname#inspect returns a consistent String" # Expected "/tmp" == "#<Pathname:/tmp>" to be truthy but was false
+  fails "Pathname#realdirpath returns a Pathname"
+  fails "Pathname#realpath returns a Pathname"
+  fails "Pathname#relative_path_from raises an error when the base directory has .."
+  fails "Pathname#relative_path_from raises an error when the two paths do not share a common prefix"
+  fails "Pathname#relative_path_from returns current and pattern when only those patterns are used"
+end
diff --git a/spec/filters/bugs/proc.rb b/spec/filters/bugs/proc.rb
new file mode 100644
index 00000000..b2fbfb09
--- /dev/null
+++ b/spec/filters/bugs/proc.rb
@@ -0,0 +1,78 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "Proc" do
+  fails "Proc#<< composition is a lambda when parameter is lambda" # NoMethodError: undefined method `<<' for #<Proc:0x760e0>
+  fails "Proc#<< does not try to coerce argument with #to_proc" # Expected TypeError (callable object is expected) but got: NoMethodError (undefined method `<<' for #<Proc:0x760c8>)
+  fails "Proc#<< raises TypeError if passed not callable object" # Expected TypeError (callable object is expected) but got: NoMethodError (undefined method `<<' for #<Proc:0x760d8>)
+  fails "Proc#== is a public method" # Expected Proc to have public instance method '==' but it does not
+  fails "Proc#== returns true if other is a dup of the original" # Expected false to be true
+  fails "Proc#=== can call its block argument declared with a block argument" # Expected 6 to equal 10
+  fails "Proc#=== on a Proc created with Kernel#lambda or Kernel#proc ignores excess arguments when self is a proc" # ArgumentError: expected kwargs
+  fails "Proc#=== yields to the block given at declaration and not to the block argument" # Expected 3 to equal 7
+  fails "Proc#>> composition is a lambda when self is lambda" # NoMethodError: undefined method `>>' for #<Proc:0x76126>
+  fails "Proc#>> does not try to coerce argument with #to_proc" # Expected TypeError (callable object is expected) but got: NoMethodError (undefined method `>>' for #<Proc:0x76108>)
+  fails "Proc#>> raises TypeError if passed not callable object" # Expected TypeError (callable object is expected) but got: NoMethodError (undefined method `>>' for #<Proc:0x76116>)
+  fails "Proc#[] can call its block argument declared with a block argument" # Expected 6 to equal 10
+  fails "Proc#[] yields to the block given at declaration and not to the block argument" # Expected 3 to equal 7
+  fails "Proc#arity for instances created with proc { || } returns positive values for definition \n    @a = proc { |(a, (*b, c)), d=1| }\n    @b = proc { |a, (*b, c), d, (*e), (*), **k| }"
+  fails "Proc#arity for instances created with proc { || } returns positive values for definition \n    @a = proc { |a, b=1| }\n    @b = proc { |a, b, c=1, d=2| }"
+  fails "Proc#arity for instances created with proc { || } returns zero for definition \n    @a = proc { |**k, &l| }\n    @b = proc { |a: 1, b: 2, **k| }"
+  fails "Proc#arity for instances created with proc { || } returns zero for definition \n    @a = proc { |a: 1| }\n    @b = proc { |a: 1, b: 2| }"
+  fails "Proc#arity for instances created with proc { || } returns zero for definition \n    @a = proc { |a=1, b: 2| }\n    @b = proc { |a=1, b: 2| }"
+  fails "Proc#arity for instances created with proc { || } returns zero for definition \n    @a = proc { |a=1| }\n    @b = proc { |a=1, b=2| }"
+  fails "Proc#binding returns the binding associated with self"
+  fails "Proc#call can call its block argument declared with a block argument" # Expected 6 to equal 10
+  fails "Proc#call on a Proc created with Kernel#lambda or Kernel#proc ignores excess arguments when self is a proc" # ArgumentError: expected kwargs
+  fails "Proc#call yields to the block given at declaration and not to the block argument" # Expected 3 to equal 7
+  fails "Proc#curry with arity argument returns Procs with arities of -1 regardless of the value of _arity_"
+  fails "Proc#curry with arity argument returns a Proc if called on a lambda that requires fewer than _arity_ arguments but may take more" # ArgumentError: wrong number of arguments (4 for 5)
+  fails "Proc#eql? is a public method" # Expected Proc to have public instance method 'eql?' but it does not
+  fails "Proc#eql? returns true if other is a dup of the original" # Expected false to be true
+  fails "Proc#inspect for a proc created with Proc.new has a binary encoding" # Expected #<Encoding:UTF-16LE> to equal #<Encoding:ASCII-8BIT (dummy)>
+  fails "Proc#inspect for a proc created with Proc.new returns a description including file and line number" # Expected "#<Proc:0x200>" =~ /^#<Proc:([^ ]*?)@ruby\/core\/proc\/shared\/to_s\.rb:6>$/ to be truthy but was nil
+  fails "Proc#inspect for a proc created with Symbol#to_proc has a binary encoding" # Expected #<Encoding:UTF-16LE> to equal #<Encoding:ASCII-8BIT (dummy)>
+  fails "Proc#inspect for a proc created with Symbol#to_proc returns a description including '(&:symbol)'" # Expected "#<Proc:0x75d4e>" to match /^#<Proc:0x\h+\(&:foobar\)>$/
+  fails "Proc#inspect for a proc created with UnboundMethod#to_proc has a binary encoding" # Expected #<Encoding:UTF-16LE> to equal #<Encoding:ASCII-8BIT (dummy)>
+  fails "Proc#inspect for a proc created with UnboundMethod#to_proc returns a description including '(lambda)' and optionally including file and line number"
+  fails "Proc#inspect for a proc created with lambda has a binary encoding" # Expected #<Encoding:UTF-16LE> to equal #<Encoding:ASCII-8BIT (dummy)>
+  fails "Proc#inspect for a proc created with lambda returns a description including '(lambda)' and including file and line number" # Expected "#<Proc:0x22e>" =~ /^#<Proc:([^ ]*?)@ruby\/core\/proc\/shared\/to_s\.rb:16 \(lambda\)>$/ to be truthy but was nil
+  fails "Proc#inspect for a proc created with proc has a binary encoding" # Expected #<Encoding:UTF-16LE> to equal #<Encoding:ASCII-8BIT (dummy)>
+  fails "Proc#inspect for a proc created with proc returns a description including file and line number" # Expected "#<Proc:0x25a>" =~ /^#<Proc:([^ ]*?)@ruby\/core\/proc\/shared\/to_s\.rb:26>$/ to be truthy but was nil
+  fails "Proc#lambda? is preserved when passing a Proc with & to the lambda keyword"
+  fails "Proc#lambda? is preserved when passing a Proc with & to the proc keyword"
+  fails "Proc#ruby2_keywords marks the final hash argument as keyword hash" # NoMethodError: undefined method `ruby2_keywords' for #<Proc:0x36616>
+  fails "Proc#ruby2_keywords prints warning when a proc accepts keyword splat" # NoMethodError: undefined method `ruby2_keywords' for #<Proc:0x365fe>
+  fails "Proc#ruby2_keywords prints warning when a proc accepts keywords" # NoMethodError: undefined method `ruby2_keywords' for #<Proc:0x36612>
+  fails "Proc#ruby2_keywords prints warning when a proc does not accept argument splat" # NoMethodError: undefined method `ruby2_keywords' for #<Proc:0x3660a>
+  fails "Proc#ruby2_keywords returns self" # NoMethodError: undefined method `ruby2_keywords' for #<Proc:0x36602>
+  fails "Proc#source_location returns an Array"
+  fails "Proc#source_location returns the first line of a multi-line proc (i.e. the line containing 'proc do')"
+  fails "Proc#source_location returns the location of the proc's body; not necessarily the proc itself"
+  fails "Proc#source_location returns the same value for a proc-ified method as the method reports" # Expected ["ruby/core/proc/fixtures/source_location.rb", 3] to equal nil
+  fails "Proc#source_location sets the first value to the path of the file in which the proc was defined"
+  fails "Proc#source_location sets the last value to an Integer representing the line on which the proc was defined" # NoMethodError: undefined method `last' for nil
+  fails "Proc#source_location works even if the proc was created on the same line"
+  fails "Proc#to_s for a proc created with Proc.new has a binary encoding" # Expected #<Encoding:UTF-16LE> to equal #<Encoding:ASCII-8BIT (dummy)>
+  fails "Proc#to_s for a proc created with Proc.new returns a description including file and line number" # Expected "#<Proc:0x17cc0>" =~ /^#<Proc:([^ ]*?)@ruby\/core\/proc\/shared\/to_s\.rb:6>$/ to be truthy but was nil
+  fails "Proc#to_s for a proc created with Symbol#to_proc has a binary encoding" # Expected #<Encoding:UTF-16LE> to equal #<Encoding:ASCII-8BIT (dummy)>
+  fails "Proc#to_s for a proc created with Symbol#to_proc returns a description including '(&:symbol)'" # Expected "#<Proc:0x6cd2c>" to match /^#<Proc:0x\h+\(&:foobar\)>$/
+  fails "Proc#to_s for a proc created with UnboundMethod#to_proc has a binary encoding" # Expected #<Encoding:UTF-16LE> to equal #<Encoding:ASCII-8BIT (dummy)>
+  fails "Proc#to_s for a proc created with UnboundMethod#to_proc returns a description including '(lambda)' and optionally including file and line number"
+  fails "Proc#to_s for a proc created with lambda has a binary encoding" # Expected #<Encoding:UTF-16LE> to equal #<Encoding:ASCII-8BIT (dummy)>
+  fails "Proc#to_s for a proc created with lambda returns a description including '(lambda)' and including file and line number" # Expected "#<Proc:0x17cec>" =~ /^#<Proc:([^ ]*?)@ruby\/core\/proc\/shared\/to_s\.rb:16 \(lambda\)>$/ to be truthy but was nil
+  fails "Proc#to_s for a proc created with proc has a binary encoding" # Expected #<Encoding:UTF-16LE> to equal #<Encoding:ASCII-8BIT (dummy)>
+  fails "Proc#to_s for a proc created with proc returns a description including file and line number" # Expected "#<Proc:0x17d18>" =~ /^#<Proc:([^ ]*?)@ruby\/core\/proc\/shared\/to_s\.rb:26>$/ to be truthy but was nil
+  fails "Proc#yield can call its block argument declared with a block argument" # Expected 6 to equal 10
+  fails "Proc#yield on a Proc created with Kernel#lambda or Kernel#proc ignores excess arguments when self is a proc" # ArgumentError: expected kwargs
+  fails "Proc#yield yields to the block given at declaration and not to the block argument" # Expected 3 to equal 7
+  fails "Proc.allocate raises a TypeError"
+  fails "Proc.new with a block argument called indirectly from a subclass returns the passed proc created from a block"
+  fails "Proc.new with a block argument called indirectly from a subclass returns the passed proc created from a method"
+  fails "Proc.new with a block argument called indirectly from a subclass returns the passed proc created from a symbol"
+  fails "Proc.new with an associated block called on a subclass of Proc returns an instance of the subclass"
+  fails "Proc.new with an associated block called on a subclass of Proc that does not 'super' in 'initialize' still constructs a functional proc"
+  fails "Proc.new with an associated block called on a subclass of Proc using a reified block parameter returns an instance of the subclass"
+  fails "Proc.new with an associated block calls initialize on the Proc object"
+  fails "Proc.new with an associated block raises a LocalJumpError when context of the block no longer exists"
+  fails "Proc.new with an associated block returns a subclass of Proc"
+  fails "Proc.new without a block raises an ArgumentError when passed no block" # Expected ArgumentError (tried to create Proc object without a block) but got: ArgumentError (tried to create a Proc object without a block)
+end
diff --git a/spec/filters/bugs/random.rb b/spec/filters/bugs/random.rb
new file mode 100644
index 00000000..9d082210
--- /dev/null
+++ b/spec/filters/bugs/random.rb
@@ -0,0 +1,12 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "Random" do
+  fails "Random#bytes returns the same numeric output for a given huge seed across all implementations and platforms" # Expected "z­" to equal "_\u0091"
+  fails "Random#bytes returns the same numeric output for a given seed across all implementations and platforms" # Expected "ÚG" to equal "\u0014\\"
+  fails "Random#rand with Range supports custom object types" # Expected "NaN#<struct RandomSpecs::CustomRangeInteger value=1>" (String) to be an instance of RandomSpecs::CustomRangeInteger
+  fails "Random::DEFAULT changes seed on reboot" # NoMethodError: undefined method `insert' for "rubyexe.rb"
+  fails "Random::DEFAULT is deprecated" # Expected #<Random:0x3e>.equal? Random to be truthy but was false
+  fails "Random::DEFAULT refers to the Random class" # Expected #<Random:0x3e>.equal? Random to be truthy but was false
+  fails "SecureRandom.random_number generates a random float number between 0.0 and 1.0 if argument is negative float" # ArgumentError: invalid argument - -11.1
+  fails "SecureRandom.random_number generates a random float number between 0.0 and 1.0 if argument is negative" # ArgumentError: invalid argument - -10
+  fails "SecureRandom.random_number raises ArgumentError if the argument is non-numeric" # Expected ArgumentError but got: TypeError (no implicit conversion of Object into Integer)
+end
diff --git a/spec/filters/bugs/range.rb b/spec/filters/bugs/range.rb
new file mode 100644
index 00000000..ca494678
--- /dev/null
+++ b/spec/filters/bugs/range.rb
@@ -0,0 +1,104 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "Range" do
+  fails "Range#bsearch with Float values with a block returning negative, zero, positive numbers accepts (+/-)Float::INFINITY from the block" # TypeError: can't iterate from Float
+  fails "Range#bsearch with Float values with a block returning negative, zero, positive numbers returns a boundary element if appropriate" # NoMethodError: undefined method `prev_float' for 3
+  fails "Range#bsearch with Float values with a block returning negative, zero, positive numbers returns an element at an index for which block returns 0 (small numbers)" # TypeError: can't iterate from Float
+  fails "Range#bsearch with Float values with a block returning negative, zero, positive numbers returns an element at an index for which block returns 0" # TypeError: can't iterate from Float
+  fails "Range#bsearch with Float values with a block returning negative, zero, positive numbers returns nil if the block never returns zero" # TypeError: can't iterate from Float
+  fails "Range#bsearch with Float values with a block returning negative, zero, positive numbers returns nil if the block returns greater than zero for every element" # TypeError: can't iterate from Float
+  fails "Range#bsearch with Float values with a block returning negative, zero, positive numbers returns nil if the block returns less than zero for every element" # TypeError: can't iterate from Float
+  fails "Range#bsearch with Float values with a block returning negative, zero, positive numbers works with infinity bounds" # NotImplementedError: Can't #bsearch an infinite range
+  fails "Range#bsearch with Float values with a block returning true or false returns a boundary element if appropriate" # NoMethodError: undefined method `prev_float' for 3
+  fails "Range#bsearch with Float values with a block returning true or false returns minimum element if the block returns true for every element" # TypeError: can't iterate from Float
+  fails "Range#bsearch with Float values with a block returning true or false returns nil if the block returns false for every element" # TypeError: can't iterate from Float
+  fails "Range#bsearch with Float values with a block returning true or false returns nil if the block returns nil for every element" # TypeError: can't iterate from Float
+  fails "Range#bsearch with Float values with a block returning true or false returns the smallest element for which block returns true" # TypeError: can't iterate from Float
+  fails "Range#bsearch with Float values with a block returning true or false works with infinity bounds" # NotImplementedError: Can't #bsearch an infinite range
+  fails "Range#bsearch with beginless ranges and Float values with a block returning negative, zero, positive numbers accepts (+/-)Float::INFINITY from the block" # NotImplementedError: Can't #bsearch an infinite range
+  fails "Range#bsearch with beginless ranges and Float values with a block returning negative, zero, positive numbers returns an element at an index for which block returns 0" # NotImplementedError: Can't #bsearch an infinite range
+  fails "Range#bsearch with beginless ranges and Float values with a block returning negative, zero, positive numbers returns an element at an index for which block returns 0.0" # NotImplementedError: Can't #bsearch an infinite range
+  fails "Range#bsearch with beginless ranges and Float values with a block returning negative, zero, positive numbers returns nil if the block never returns zero" # NotImplementedError: Can't #bsearch an infinite range
+  fails "Range#bsearch with beginless ranges and Float values with a block returning negative, zero, positive numbers returns nil if the block returns greater than zero for every element" # NotImplementedError: Can't #bsearch an infinite range
+  fails "Range#bsearch with beginless ranges and Float values with a block returning negative, zero, positive numbers returns nil if the block returns less than zero for every element" # NotImplementedError: Can't #bsearch an infinite range
+  fails "Range#bsearch with beginless ranges and Float values with a block returning negative, zero, positive numbers works with infinity bounds" # NoMethodError: undefined method `inf' for #<MSpecEnv:0x1b536>
+  fails "Range#bsearch with beginless ranges and Float values with a block returning true or false returns nil if the block returns nil for every element" # NotImplementedError: Can't #bsearch an infinite range
+  fails "Range#bsearch with beginless ranges and Float values with a block returning true or false returns nil if the block returns true for every element" # NotImplementedError: Can't #bsearch an infinite range
+  fails "Range#bsearch with beginless ranges and Float values with a block returning true or false returns the smallest element for which block returns true" # NotImplementedError: Can't #bsearch an infinite range
+  fails "Range#bsearch with beginless ranges and Float values with a block returning true or false works with infinity bounds" # NoMethodError: undefined method `inf' for #<MSpecEnv:0x1b536>
+  fails "Range#bsearch with beginless ranges and Integer values with a block returning negative, zero, positive numbers accepts Float::INFINITY from the block" # NotImplementedError: Can't #bsearch an infinite range
+  fails "Range#bsearch with beginless ranges and Integer values with a block returning negative, zero, positive numbers returns an element at an index for which block returns 0" # NotImplementedError: Can't #bsearch an infinite range
+  fails "Range#bsearch with beginless ranges and Integer values with a block returning negative, zero, positive numbers returns an element at an index for which block returns 0.0" # NotImplementedError: Can't #bsearch an infinite range
+  fails "Range#bsearch with beginless ranges and Integer values with a block returning negative, zero, positive numbers returns nil if the block never returns zero" # NotImplementedError: Can't #bsearch an infinite range
+  fails "Range#bsearch with beginless ranges and Integer values with a block returning negative, zero, positive numbers returns nil if the block returns greater than zero for every element" # NotImplementedError: Can't #bsearch an infinite range
+  fails "Range#bsearch with beginless ranges and Integer values with a block returning true or false returns the smallest element for which block returns true" # NotImplementedError: Can't #bsearch an infinite range
+  fails "Range#bsearch with endless ranges and Float values with a block returning negative, zero, positive numbers accepts (+/-)Float::INFINITY from the block" # NotImplementedError: Can't #bsearch an infinite range
+  fails "Range#bsearch with endless ranges and Float values with a block returning negative, zero, positive numbers returns an element at an index for which block returns 0" # NotImplementedError: Can't #bsearch an infinite range
+  fails "Range#bsearch with endless ranges and Float values with a block returning negative, zero, positive numbers returns an element at an index for which block returns 0.0" # NotImplementedError: Can't #bsearch an infinite range
+  fails "Range#bsearch with endless ranges and Float values with a block returning negative, zero, positive numbers returns nil if the block never returns zero" # NotImplementedError: Can't #bsearch an infinite range
+  fails "Range#bsearch with endless ranges and Float values with a block returning negative, zero, positive numbers returns nil if the block returns greater than zero for every element" # NotImplementedError: Can't #bsearch an infinite range
+  fails "Range#bsearch with endless ranges and Float values with a block returning negative, zero, positive numbers returns nil if the block returns less than zero for every element" # NotImplementedError: Can't #bsearch an infinite range
+  fails "Range#bsearch with endless ranges and Float values with a block returning negative, zero, positive numbers works with infinity bounds" # NoMethodError: undefined method `inf' for #<MSpecEnv:0x1b536>
+  fails "Range#bsearch with endless ranges and Float values with a block returning true or false returns minimum element if the block returns true for every element" # NotImplementedError: Can't #bsearch an infinite range
+  fails "Range#bsearch with endless ranges and Float values with a block returning true or false returns nil if the block returns false for every element" # NotImplementedError: Can't #bsearch an infinite range
+  fails "Range#bsearch with endless ranges and Float values with a block returning true or false returns nil if the block returns nil for every element" # NotImplementedError: Can't #bsearch an infinite range
+  fails "Range#bsearch with endless ranges and Float values with a block returning true or false returns the smallest element for which block returns true" # NotImplementedError: Can't #bsearch an infinite range
+  fails "Range#bsearch with endless ranges and Float values with a block returning true or false works with infinity bounds" # NoMethodError: undefined method `inf' for #<MSpecEnv:0x1b536>
+  fails "Range#bsearch with endless ranges and Integer values with a block returning negative, zero, positive numbers accepts -Float::INFINITY from the block" # NotImplementedError: Can't #bsearch an infinite range
+  fails "Range#bsearch with endless ranges and Integer values with a block returning negative, zero, positive numbers returns an element at an index for which block returns 0" # NotImplementedError: Can't #bsearch an infinite range
+  fails "Range#bsearch with endless ranges and Integer values with a block returning negative, zero, positive numbers returns an element at an index for which block returns 0.0" # NotImplementedError: Can't #bsearch an infinite range
+  fails "Range#bsearch with endless ranges and Integer values with a block returning negative, zero, positive numbers returns nil if the block never returns zero" # NotImplementedError: Can't #bsearch an infinite range
+  fails "Range#bsearch with endless ranges and Integer values with a block returning negative, zero, positive numbers returns nil if the block returns less than zero for every element" # NotImplementedError: Can't #bsearch an infinite range
+  fails "Range#bsearch with endless ranges and Integer values with a block returning true or false returns minimum element if the block returns true for every element" # NotImplementedError: Can't #bsearch an infinite range
+  fails "Range#bsearch with endless ranges and Integer values with a block returning true or false returns the smallest element for which block returns true" # NotImplementedError: Can't #bsearch an infinite range
+  fails "Range#cover? accepts beginless range argument" # Expected false to be true
+  fails "Range#cover? accepts endless range argument" # Expected false to be true
+  fails "Range#cover? allows self to be a beginless range" # Expected false to be true
+  fails "Range#cover? allows self to be a endless range" # Expected false to be true
+  fails "Range#cover? range argument accepts range argument" # Expected false to be true
+  fails "Range#cover? range argument honors exclusion of right boundary (:exclude_end option)" # Expected false to be true
+  fails "Range#cover? range argument supports boundaries of different comparable types" # Expected false to be true
+  fails "Range#eql? returns false if the endpoints are not eql?" # Expected 0..1 not to have same value or type as 0..1
+  fails "Range#first raises a TypeError if #to_int does not return an Integer" # Expected TypeError but no exception was raised ([2] was returned)
+  fails "Range#hash generates an Integer for the hash value" # Expected "A,1,1,0" (String) to be an instance of Integer
+  fails "Range#include? on string elements returns false if other is not matched by element.succ" # Expected true to be false
+  fails "Range#include? with weird succ when excluded end value returns false if other is not matched by element.succ" # Expected true to be false
+  fails "Range#include? with weird succ when included end value returns false if other is equal as last element but not matched by element.succ" # Expected true to be false
+  fails "Range#include? with weird succ when included end value returns false if other is not matched by element.succ" # Expected true to be false
+  fails "Range#initialize raises a FrozenError if called on an already initialized Range" # Expected FrozenError but got: NameError ('initialize' called twice)
+  fails "Range#inspect works for nil ... nil ranges" # Expected ".." == "nil..nil" to be truthy but was false
+  fails "Range#last raises a TypeError if #to_int does not return an Integer" # Expected TypeError but no exception was raised ([3] was returned)
+  fails "Range#max given a block calls #> and #< on the return value of the block" # Mock 'obj' expected to receive >("any_args") exactly 2 times but received it 0 times
+  fails "Range#max given a block raises RangeError when called with custom comparison method on an beginless range" # Expected RangeError but got: TypeError (can't iterate from NilClass)
+  fails "Range#max raises TypeError when called on a Time...Time(excluded end point)" # Expected TypeError but no exception was raised (1609624185562 was returned)
+  fails "Range#max raises TypeError when called on an exclusive range and a non Integer value" # Expected TypeError but no exception was raised (907.1111 was returned)
+  fails "Range#max raises for an exclusive beginless range" # Expected TypeError (cannot exclude end value with non Integer begin value) but no exception was raised (0 was returned)
+  fails "Range#max returns the maximum value in the range when called with no arguments" # Expected NaN == "e" to be truthy but was false
+  fails "Range#member? on string elements returns false if other is not matched by element.succ" # Expected true to be false
+  fails "Range#member? with weird succ when excluded end value returns false if other is not matched by element.succ" # Expected true to be false
+  fails "Range#member? with weird succ when included end value returns false if other is equal as last element but not matched by element.succ" # Expected true to be false
+  fails "Range#member? with weird succ when included end value returns false if other is not matched by element.succ" # Expected true to be false
+  fails "Range#min given a block calls #> and #< on the return value of the block" # Mock 'obj' expected to receive >("any_args") exactly 2 times but received it 0 times
+  fails "Range#minmax on an exclusive range raises TypeError if the end value is not an integer" # Expected TypeError (cannot exclude non Integer end value) but got: TypeError (can't iterate from Float)
+  fails "Range#minmax on an exclusive range should raise RangeError on a beginless range" # Expected RangeError (/cannot get the maximum of beginless range with custom comparison method|cannot get the minimum of beginless range/) but got: TypeError (can't iterate from NilClass)
+  fails "Range#minmax on an exclusive range should raise RangeError on an endless range" # Mock 'x': method <=>  called with unexpected arguments (nil)
+  fails "Range#minmax on an inclusive range raises RangeError or ArgumentError on a beginless range" # Expected ArgumentError (comparison of NilClass with MockObject failed) but got: TypeError (can't iterate from NilClass)
+  fails "Range#minmax on an inclusive range should raise RangeError on an endless range without iterating the range" # Mock 'x': method <=>  called with unexpected arguments (nil)
+  fails "Range#minmax on an inclusive range should return the minimum and maximum values for a non-numeric range without iterating the range" # Mock 'x' expected to receive succ("any_args") exactly 0 times but received it 1 times
+  fails "Range#minmax on an inclusive range should return the minimum and maximum values for a numeric range without iterating the range" # TypeError: can't iterate from Float
+  fails "Range#size returns nil for endless ranges if the start is not numeric" # Expected Infinity == nil to be truthy but was false
+  fails "Range#step when no block is given returned Enumerator size raises a TypeError if #to_int does not return an Integer" # Expected TypeError but no exception was raised (#<Enumerator: 1..2:step(#<MockObject:0x2d238>)> was returned)
+  fails "Range#step when no block is given returned Enumerator size raises a TypeError if step does not respond to #to_int" # Expected TypeError but no exception was raised (#<Enumerator: 1..2:step(#<MockObject:0x2d214>)> was returned)
+  fails "Range#step when no block is given returned Enumerator size returns the range size when there's no step_size" # Expected 9 == 10 to be truthy but was false
+  fails "Range#step with an endless range and Float values yields Float values incremented by a Float step" # Expected [-1, 0] to have same value and type as [-1, -0.5, 0, 0.5]
+  fails "Range#step with an endless range and Integer values yields Float values incremented by a Float step" # Expected [-2, 1] to have same value and type as [-2, -0.5, 1]
+  fails "Range#step with exclusive end and String values raises a TypeError when passed a Float step" # Expected TypeError but no exception was raised ("A"..."G" was returned)
+  fails "Range#step with inclusive end and Float values returns Float values of 'step * n + begin <= end'" # Expected [1, 2.8, 4.6, 6.4, 1, 2.3, 3.6, 4.9, 6.2, 7.5, 8.8, 10.1, 11.4] to have same value and type as [1, 2.8, 4.6, 6.4, 1, 2.3, 3.6, 4.9, 6.2, 7.5, 8.8, 10.1, 11.4, 12.7]
+  fails "Range#step with inclusive end and String values raises a TypeError when passed a Float step" # Expected TypeError but no exception was raised ("A".."G" was returned)
+  fails "Range#to_a throws an exception for endless ranges" # Expected RangeError but got: TypeError (cannot convert endless range to an array)
+  fails "Range#to_a works with Ranges of 64-bit integers" # Expected [256, 257] == [1099511627776, 1099511627777] to be truthy but was false
+  fails "Range#to_s can show beginless ranges" # Expected "...1" == "...1.0" to be truthy but was false
+  fails "Range#to_s can show endless ranges" # Expected "1..." == "1.0..." to be truthy but was false
+  fails_badly "Range#min given a block raises RangeError when called with custom comparison method on an endless range" # Expected RangeError but got: Opal::SyntaxError (undefined method `type' for nil)
+  fails_badly "Range#minmax on an exclusive range should return the minimum and maximum values for a numeric range without iterating the range"
+  fails_badly "Range#step with an endless range and String values raises a TypeError when passed a Float step" # Expected TypeError but got: Opal::SyntaxError (undefined method `type' for nil)
+end
diff --git a/spec/filters/bugs/rational.rb b/spec/filters/bugs/rational.rb
new file mode 100644
index 00000000..ce969ca9
--- /dev/null
+++ b/spec/filters/bugs/rational.rb
@@ -0,0 +1,13 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "Rational" do
+  fails "Rational does not respond to new" # Expected NoMethodError but got: ArgumentError ([Rational#initialize] wrong number of arguments(1 for 2))
+  fails "Rational#coerce coerces to Rational, when given a Complex" # Expected nil == [(5/1), (3/4)] to be truthy but was false
+  fails "Rational#coerce raises an error when passed a BigDecimal" # Expected TypeError (/BigDecimal can't be coerced into Rational/) but no exception was raised (nil was returned)
+  fails "Rational#marshal_dump dumps numerator and denominator"
+  fails "Rational#round with half option raise for a non-existent round mode" # TypeError: not an Integer
+  fails "Rational#round with half option returns a Rational when the precision is greater than 0" # ArgumentError: [Rational#round] wrong number of arguments(2 for -1)
+  fails "Rational#round with half option returns an Integer when precision is not passed" # TypeError: not an Integer
+  fails "Rational#to_r fails when a BasicObject's to_r does not return a Rational" # NoMethodError: undefined method `nil?' for BasicObject
+  fails "Rational#to_r raises TypeError trying to convert BasicObject" # NoMethodError: undefined method `nil?' for BasicObject
+  fails "Rational#to_r works when a BasicObject has to_r" # NoMethodError: undefined method `nil?' for BasicObject
+end
diff --git a/spec/filters/bugs/regexp.rb b/spec/filters/bugs/regexp.rb
new file mode 100644
index 00000000..633f514d
--- /dev/null
+++ b/spec/filters/bugs/regexp.rb
@@ -0,0 +1,71 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "regular_expressions" do
+  fails "MatchData#regexp returns a Regexp for the result of gsub(String)" # Expected /\[/gm == /\[/ to be truthy but was false
+  fails "MatchData#string returns a frozen copy of the matched string for gsub(String)" # NotImplementedError: String#gsub! not supported. Mutable String methods are not supported in Opal.
+  fails "MatchData.allocate is undefined" # Expected NoMethodError but no exception was raised (#<MatchData>(#pretty_inspect raised #<NoMethodError: undefined method `named_captures' for nil>) was returned)
+  fails "Regexp#encoding allows otherwise invalid characters if NOENCODING is specified" # NameError: uninitialized constant Regexp::NOENCODING
+  fails "Regexp#encoding defaults to US-ASCII if the Regexp contains only US-ASCII character"
+  fails "Regexp#encoding defaults to UTF-8 if \\u escapes appear"
+  fails "Regexp#encoding defaults to UTF-8 if a literal UTF-8 character appears"
+  fails "Regexp#encoding ignores the default_internal encoding"
+  fails "Regexp#encoding ignores the encoding and uses US-ASCII if the string has only ASCII characters"
+  fails "Regexp#encoding returns BINARY if the 'n' modifier is supplied and non-US-ASCII characters are present" # NoMethodError: undefined method `encoding' for /\xc2\xa1/
+  fails "Regexp#encoding returns EUC_JP if the 'e' modifier is supplied"
+  fails "Regexp#encoding returns US_ASCII if the 'n' modifier is supplied and only US-ASCII characters are present"
+  fails "Regexp#encoding returns UTF-8 if the 'u' modifier is supplied"
+  fails "Regexp#encoding returns Windows-31J if the 's' modifier is supplied"
+  fails "Regexp#encoding returns an Encoding object"
+  fails "Regexp#encoding upgrades the encoding to that of an embedded String"
+  fails "Regexp#fixed_encoding? returns false by default"
+  fails "Regexp#fixed_encoding? returns false if the 'n' modifier was supplied to the Regexp"
+  fails "Regexp#fixed_encoding? returns true if the 'e' modifier was supplied to the Regexp"
+  fails "Regexp#fixed_encoding? returns true if the 's' modifier was supplied to the Regexp"
+  fails "Regexp#fixed_encoding? returns true if the 'u' modifier was supplied to the Regexp"
+  fails "Regexp#fixed_encoding? returns true if the Regexp contains a UTF-8 literal"
+  fails "Regexp#fixed_encoding? returns true if the Regexp contains a \\u escape"
+  fails "Regexp#fixed_encoding? returns true if the Regexp was created with the Regexp::FIXEDENCODING option"
+  fails "Regexp#hash is based on the text and options of Regexp"
+  fails "Regexp#hash returns the same value for two Regexps differing only in the /n option"
+  fails "Regexp#initialize raises a TypeError on an initialized non-literal Regexp"
+  fails "Regexp#inspect does not include a character set code"
+  fails "Regexp#inspect does not include the 'o' option"
+  fails "Regexp#inspect returns options in the order 'mixn'"
+  fails "Regexp#named_captures works with duplicate capture group names"
+  fails "Regexp#names returns each capture name only once"
+  fails "Regexp#source will remove escape characters" # Expected "foo\\/bar" to equal "foo/bar"
+  fails "Regexp#to_s deals properly with the two types of lookahead groups"
+  fails "Regexp#to_s returns a string in (?xxx:yyy) notation"
+  fails "Regexp#to_s shows all options as excluded if none are selected"
+  fails "Regexp#to_s shows non-included options after a - sign"
+  fails "Regexp#to_s shows the pattern after the options"
+  fails "Regexp.compile given a Regexp does not honour options given as additional arguments" # Expected warning to match: /flags ignored/ but got: ""
+  fails "Regexp.compile given a String accepts an Integer of two or more options ORed together as the second argument" # Expected 0 == 0 to be falsy but was true
+  fails "Regexp.compile given a String ignores the third argument if it is 'e' or 'euc' (case-insensitive)" # ArgumentError: [Regexp.new] wrong number of arguments(3 for -2)
+  fails "Regexp.compile given a String ignores the third argument if it is 's' or 'sjis' (case-insensitive)" # ArgumentError: [Regexp.new] wrong number of arguments(3 for -2)
+  fails "Regexp.compile given a String ignores the third argument if it is 'u' or 'utf8' (case-insensitive)" # ArgumentError: [Regexp.new] wrong number of arguments(3 for -2)
+  fails "Regexp.compile given a String raises a RegexpError when passed an incorrect regexp" # Exception: Invalid regular expression: /^[$/: Unterminated character class
+  fails "Regexp.compile given a String uses ASCII_8BIT encoding if third argument is 'n' or 'none' (case insensitive) and non-ascii characters" # ArgumentError: [Regexp.new] wrong number of arguments(3 for -2)
+  fails "Regexp.compile given a String uses US_ASCII encoding if third argument is 'n' or 'none' (case insensitive) and only ascii characters" # ArgumentError: [Regexp.new] wrong number of arguments(3 for -2)
+  fails "Regexp.compile given a String with escaped characters raises a RegexpError if \\x is not followed by any hexadecimal digits" # Expected RegexpError but no exception was raised (/\xn/ was returned)
+  fails "Regexp.compile given a String with escaped characters raises a RegexpError if less than four digits are given for \\uHHHH" # Expected RegexpError but no exception was raised (/\u304/ was returned)
+  fails "Regexp.compile given a String with escaped characters raises a RegexpError if more than six hexadecimal digits are given" # Expected RegexpError but no exception was raised (/\u{0ffffff}/ was returned)
+  fails "Regexp.compile given a String with escaped characters raises a RegexpError if the \\u{} escape is empty" # Expected RegexpError but no exception was raised (/\u{}/ was returned)
+  fails "Regexp.compile given a String with escaped characters returns a Regexp with US-ASCII encoding if UTF-8 escape sequences using only 7-bit ASCII are present" # NoMethodError: undefined method `encoding' for /a/
+  fails "Regexp.compile given a String with escaped characters returns a Regexp with US-ASCII encoding if only 7-bit ASCII characters are present regardless of the input String's encoding" # NoMethodError: undefined method `encoding' for /abc/
+  fails "Regexp.compile given a String with escaped characters returns a Regexp with UTF-8 encoding if any UTF-8 escape sequences outside 7-bit ASCII are present" # NoMethodError: undefined method `encoding' for /ÿ/
+  fails "Regexp.compile given a String with escaped characters returns a Regexp with source String having US-ASCII encoding if UTF-8 escape sequences using only 7-bit ASCII are present" # Expected #<Encoding:UTF-16LE> to equal #<Encoding:ASCII-8BIT (dummy)>
+  fails "Regexp.compile given a String with escaped characters returns a Regexp with source String having US-ASCII encoding if only 7-bit ASCII characters are present regardless of the input String's encoding" # Expected #<Encoding:UTF-16LE> to equal #<Encoding:ASCII-8BIT (dummy)>
+  fails "Regexp.compile given a String with escaped characters returns a Regexp with source String having the input String's encoding" # NameError: uninitialized constant Encoding::Shift_JIS
+  fails "Regexp.compile given a String with escaped characters returns a Regexp with the input String's encoding" # NameError: uninitialized constant Encoding::Shift_JIS
+  fails "Regexp.compile works by default for subclasses with overridden #initialize" # Expected /hi/ (Regexp) to be kind of RegexpSpecsSubclass
+  fails "Regexp.escape sets the encoding of the result to BINARY if any non-US-ASCII characters are present in an input String with invalid encoding" # Expected true to be false
+  fails "Regexp.new given a String accepts an Integer of two or more options ORed together as the second argument" # Expected 0 == 0 to be falsy but was true
+  fails "Regexp.new given a String raises a RegexpError when passed an incorrect regexp"
+  fails "Regexp.new given a String with escaped characters raises a RegexpError if \\x is not followed by any hexadecimal digits"
+  fails "Regexp.new given a String with escaped characters raises a RegexpError if more than six hexadecimal digits are given"
+  fails "Regexp.new works by default for subclasses with overridden #initialize"
+  fails "Regexp.quote sets the encoding of the result to BINARY if any non-US-ASCII characters are present in an input String with invalid encoding" # Expected true to be false
+  fails "Regexp.try_convert returns nil if given an argument that can't be converted to a Regexp"
+  fails "Regexp.try_convert tries to coerce the argument by calling #to_regexp"
+  fails "Regexp.union uses to_regexp to convert argument" # Mock 'pattern' expected to receive to_regexp("any_args") exactly 1 times but received it 0 times
+end
diff --git a/spec/filters/bugs/set.rb b/spec/filters/bugs/set.rb
new file mode 100644
index 00000000..edb292e9
--- /dev/null
+++ b/spec/filters/bugs/set.rb
@@ -0,0 +1,60 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "Set" do
+  fails "Set#& raises an ArgumentError when passed a non-Enumerable"
+  fails "Set#& returns a new Set containing only elements shared by self and the passed Enumerable"
+  fails "Set#<=> returns +1 if the set is a proper superset of other set" # Expected nil == 1 to be truthy but was false
+  fails "Set#<=> returns -1 if the set is a proper subset of the other set" # Expected nil == -1 to be truthy but was false
+  fails "Set#== does not depend on the order of nested Sets"
+  fails "Set#== returns true when the passed Object is a Set and self and the Object contain the same elements"
+  fails "Set#=== is an alias for include?" # Expected #<Method: Set#=== (defined in Kernel in corelib/kernel.rb:14)> to equal #<Method: Set#include? (defined in Set in set.rb:125)>
+  fails "Set#=== member equality is checked using both #hash and #eql?" # Expected false to equal true
+  fails "Set#=== returns true when self contains the passed Object" # Expected false to be true
+  fails "Set#^ raises an ArgumentError when passed a non-Enumerable"
+  fails "Set#^ returns a new Set containing elements that are not in both self and the passed Enumerable" # NoMethodError: undefined method `^' for #<Set: {1,2,3,4}>
+  fails "Set#compare_by_identity causes future comparisons on the receiver to be made by identity" # NoMethodError: undefined method `compare_by_identity' for #<Set: {1}>
+  fails "Set#compare_by_identity compares its members by identity" # NoMethodError: undefined method `compare_by_identity' for #<Set: {}>
+  fails "Set#compare_by_identity does not call #hash on members" # NoMethodError: undefined method `compare_by_identity' for #<Set: {}>
+  fails "Set#compare_by_identity is idempotent and has no effect on an already compare_by_identity set" # NoMethodError: undefined method `compare_by_identity' for #<Set: {}>
+  fails "Set#compare_by_identity is not equal to set what does not compare by identity" # NoMethodError: undefined method `compare_by_identity' for #<Set: {1,2}>
+  fails "Set#compare_by_identity persists over #clones" # NoMethodError: undefined method `compare_by_identity' for #<Set: {}>
+  fails "Set#compare_by_identity persists over #dups" # NoMethodError: undefined method `compare_by_identity' for #<Set: {}>
+  fails "Set#compare_by_identity regards #clone'd objects as having different identities" # NoMethodError: undefined method `compare_by_identity' for #<Set: {}>
+  fails "Set#compare_by_identity regards #dup'd objects as having different identities" # NoMethodError: undefined method `compare_by_identity' for #<Set: {}>
+  fails "Set#compare_by_identity rehashes internally so that old members can be looked up" # NoMethodError: undefined method `compare_by_identity' for #<Set: {1,2,3,4,5,6,7,8,9,10,#<Object:0x13a2>}>
+  fails "Set#compare_by_identity returns self" # NoMethodError: undefined method `compare_by_identity' for #<Set: {}>
+  fails "Set#compare_by_identity uses #equal? semantics, but doesn't actually call #equal? to determine identity" # NoMethodError: undefined method `compare_by_identity' for #<Set: {}>
+  fails "Set#compare_by_identity uses the semantics of BasicObject#equal? to determine members identity" # NoMethodError: undefined method `compare_by_identity' for #<Set: {}>
+  fails "Set#compare_by_identity? returns false by default" # NoMethodError: undefined method `compare_by_identity?' for #<Set: {}>
+  fails "Set#compare_by_identity? returns true once #compare_by_identity has been invoked on self" # NoMethodError: undefined method `compare_by_identity' for #<Set: {}>
+  fails "Set#compare_by_identity? returns true when called multiple times on the same set" # NoMethodError: undefined method `compare_by_identity' for #<Set: {}>
+  fails "Set#divide divides self into a set of subsets based on the blocks return values"
+  fails "Set#divide when passed a block with an arity of 2 divides self into a set of subsets based on the blocks return values"
+  fails "Set#divide when passed a block with an arity of 2 yields each two Object to the block"
+  fails "Set#divide yields each Object to the block"
+  fails "Set#flatten raises an ArgumentError when self is recursive"
+  fails "Set#flatten returns a copy of self with each included Set flattened"
+  fails "Set#flatten when Set contains a Set-like object returns a copy of self with each included Set-like object flattened" # NoMethodError: undefined method `flatten' for #<Set: {#<SetSpecs::SetLike:0x8b30c>}>
+  fails "Set#flatten! flattens self"
+  fails "Set#flatten! raises an ArgumentError when self is recursive"
+  fails "Set#flatten! returns nil when self was not modified"
+  fails "Set#flatten! returns self when self was modified"
+  fails "Set#flatten! when Set contains a Set-like object flattens self, including Set-like objects" # NoMethodError: undefined method `flatten!' for #<Set: {#<SetSpecs::SetLike:0x8b318>}>
+  fails "Set#flatten_merge flattens the passed Set and merges it into self"
+  fails "Set#flatten_merge raises an ArgumentError when trying to flatten a recursive Set"
+  fails "Set#hash is static"
+  fails "Set#initialize uses #each on the provided Enumerable if it does not respond to #each_entry" # ArgumentError: value must be enumerable
+  fails "Set#initialize uses #each_entry on the provided Enumerable" # ArgumentError: value must be enumerable
+  fails "Set#initialize_clone does not freeze the new Set when called from clone(freeze: false)" # Expected false == true to be truthy but was false
+  fails "Set#inspect correctly handles self-references"
+  fails "Set#intersection raises an ArgumentError when passed a non-Enumerable"
+  fails "Set#intersection returns a new Set containing only elements shared by self and the passed Enumerable"
+  fails "Set#join calls #to_a to convert the Set in to an Array" # NoMethodError: undefined method `join' for #<Set: {a,b,c}>
+  fails "Set#join does not separate elements when the passed separator is nil" # NoMethodError: undefined method `join' for #<Set: {a,b,c}>
+  fails "Set#join returns a new string formed by joining elements after conversion" # NoMethodError: undefined method `join' for #<Set: {a,b,c}>
+  fails "Set#join returns a string formed by concatenating each element separated by the separator" # NoMethodError: undefined method `join' for #<Set: {a,b,c}>
+  fails "Set#join returns an empty string if the Set is empty" # NoMethodError: undefined method `join' for #<Set: {}>
+  fails "Set#merge raises an ArgumentError when passed a non-Enumerable"
+  fails "Set#pretty_print_cycle passes the 'pretty print' representation of a self-referencing Set to the pretty print writer"
+  fails "Set#to_s correctly handles self-references" # Expected "#<Set:0x865de>" to include "#<Set: {...}>"
+  fails "Set#to_s is an alias of inspect" # Expected #<Method: Set#to_s (defined in Kernel in corelib/kernel.rb:1201)> to equal #<Method: Set#inspect (defined in Set in set.rb:36)>
+end
diff --git a/spec/filters/bugs/singleton.rb b/spec/filters/bugs/singleton.rb
new file mode 100644
index 00000000..b548d65d
--- /dev/null
+++ b/spec/filters/bugs/singleton.rb
@@ -0,0 +1,7 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "Singleton" do
+  fails "Singleton._load returns the singleton instance for anything passed in to subclass"
+  fails "Singleton._load returns the singleton instance for anything passed in"
+  fails "Singleton.instance returns an instance of the singleton's clone"
+  fails "Singleton.instance returns the same instance for multiple class to instance on clones"
+end
diff --git a/spec/filters/bugs/string.rb b/spec/filters/bugs/string.rb
new file mode 100644
index 00000000..4555eb72
--- /dev/null
+++ b/spec/filters/bugs/string.rb
@@ -0,0 +1,278 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "String" do
+  fails "Integer#chr with an encoding argument accepts a String as an argument" # Expected to not get Exception but got: ArgumentError (unknown encoding name - euc-jp)
+  fails "String#% can produce a string with invalid encoding" # Expected true to be false
+  fails "String#% flags # applies to format o does nothing for negative argument" # Expected "0..7651" to equal "..7651"
+  fails "String#% flags # applies to formats aAeEfgG changes format from dd.dddd to exponential form for gG" # Expected "1.234e+02" to equal "1.e+02"
+  fails "String#% flags # applies to formats aAeEfgG forces a decimal point to be added, even if no digits follow" # NotImplementedError: `A` and `a` format field types are not implemented in Opal yet
+  fails "String#% flags (digit)$ specifies the absolute argument number for this field" # NotImplementedError: `A` and `a` format field types are not implemented in Opal yet
+  fails "String#% flags * left-justifies the result if specified with $ argument is negative" # Expected "1.095200e+2         " to equal "1.095200e+02        "
+  fails "String#% flags * left-justifies the result if width is negative" # Expected "1.095200e+2         " to equal "1.095200e+02        "
+  fails "String#% flags * raises ArgumentError when is mixed with width" # Expected ArgumentError but no exception was raised ("       112" was returned)
+  fails "String#% flags * uses the previous argument as the field width" # Expected "         1.095200e+02" to equal "        1.095200e+02"
+  fails "String#% flags * uses the specified argument as the width if * is followed by a number and $" # Expected "         1.095200e+02" to equal "        1.095200e+02"
+  fails "String#% flags + applies to numeric formats bBdiouxXaAeEfgG adds a leading plus sign to non-negative numbers" # NotImplementedError: `A` and `a` format field types are not implemented in Opal yet
+  fails "String#% flags - left-justifies the result of conversion if width is specified" # Expected "1.095200e+2         " to equal "1.095200e+02        "
+  fails "String#% flags 0 (zero) applies to numeric formats bBdiouxXaAeEfgG and width is specified pads with zeros, not spaces" # Expected "0000000001.095200e+02" to equal "000000001.095200e+02"
+  fails "String#% flags space applies to numeric formats bBdiouxXeEfgGaA does not leave a space at the start of negative numbers" # NotImplementedError: `A` and `a` format field types are not implemented in Opal yet
+  fails "String#% flags space applies to numeric formats bBdiouxXeEfgGaA leaves a space at the start of non-negative numbers" # NotImplementedError: `A` and `a` format field types are not implemented in Opal yet
+  fails "String#% flags space applies to numeric formats bBdiouxXeEfgGaA treats several white spaces as one" # NotImplementedError: `A` and `a` format field types are not implemented in Opal yet
+  fails "String#% float formats A converts floating point argument as [-]0xh.hhhhp[+-]dd and use uppercase X and P" # NotImplementedError: `A` and `a` format field types are not implemented in Opal yet
+  fails "String#% float formats A displays Float::INFINITY as Inf" # NotImplementedError: `A` and `a` format field types are not implemented in Opal yet
+  fails "String#% float formats A displays Float::NAN as NaN" # NotImplementedError: `A` and `a` format field types are not implemented in Opal yet
+  fails "String#% float formats G otherwise cuts excessive digits in fractional part and keeps only 4 ones" # Expected "12.12341111" to equal "12.1234"
+  fails "String#% float formats G otherwise cuts fraction part to have only 6 digits at all" # Expected "1.1234567" to equal "1.12346"
+  fails "String#% float formats G otherwise rounds the last significant digit to the closest one in fractional part" # Expected "1.555555555" to equal "1.55556"
+  fails "String#% float formats G the exponent is greater than or equal to the precision (6 by default) converts a floating point number using exponential form" # Expected "1.234567E+06" to equal "1.23457E+06"
+  fails "String#% float formats a converts floating point argument as [-]0xh.hhhhp[+-]dd" # NotImplementedError: `A` and `a` format field types are not implemented in Opal yet
+  fails "String#% float formats a displays Float::INFINITY as Inf" # NotImplementedError: `A` and `a` format field types are not implemented in Opal yet
+  fails "String#% float formats a displays Float::NAN as NaN" # NotImplementedError: `A` and `a` format field types are not implemented in Opal yet
+  fails "String#% float formats g otherwise cuts excessive digits in fractional part and keeps only 4 ones" # Expected "12.12341111" to equal "12.1234"
+  fails "String#% float formats g otherwise cuts fraction part to have only 6 digits at all" # Expected "1.1234567" to equal "1.12346"
+  fails "String#% float formats g otherwise rounds the last significant digit to the closest one in fractional part" # Expected "1.555555555" to equal "1.55556"
+  fails "String#% float formats g the exponent is greater than or equal to the precision (6 by default) converts a floating point number using exponential form" # Expected "1.234567e+06" to equal "1.23457e+06"
+  fails "String#% integer formats d works well with large numbers" # Expected "1234567890987654400" to equal "1234567890987654321"
+  fails "String#% integer formats i works well with large numbers" # Expected "1234567890987654400" to equal "1234567890987654321"
+  fails "String#% integer formats u works well with large numbers" # Expected "1234567890987654400" to equal "1234567890987654321"
+  fails "String#% other formats % alone raises an ArgumentError" # Expected ArgumentError but no exception was raised ("%" was returned)
+  fails "String#% other formats s preserves encoding of the format string" # Expected #<Encoding:UTF-8> == #<Encoding:US-ASCII> to be truthy but was false
+  fails "String#% output's encoding is the same as the format string if passed value is encoding-compatible" # NameError: uninitialized constant Encoding::SHIFT_JIS
+  fails "String#% output's encoding raises if a compatible encoding can't be found" # Expected Encoding::CompatibilityError but no exception was raised ("hello world" was returned)
+  fails "String#% precision float types controls the number of decimal places displayed in fraction part" # NotImplementedError: `A` and `a` format field types are not implemented in Opal yet
+  fails "String#% precision float types does not affect G format" # Expected "12.12340000" to equal "12.1234"
+  fails "String#% precision string formats determines the maximum number of characters to be copied from the string" # Expected "1" to equal "["
+  fails "String#% raises Encoding::CompatibilityError if both encodings are ASCII compatible and there ano not ASCII characters" # ArgumentError: unknown encoding name - windows-1252
+  fails "String#% raises an error if single % appears at the end" # Expected ArgumentError but no exception was raised ("%" was returned)
+  fails "String#% returns a String in the same encoding as the format String if compatible" # NameError: uninitialized constant Encoding::KOI8_U
+  fails "String#% supports inspect formats using %p" # Expected "{\"capture\"=>1}" to equal "{:capture=>1}"
+  fails "String#% width specifies the minimum number of characters that will be written to the result" # Expected "         1.095200e+02" to equal "        1.095200e+02"
+  fails "String#* raises a RangeError when given integer is a Bignum" # Expected RangeError but no exception was raised ("" was returned)
+  fails "String#* returns String instances" # Expected "" (MyString) to be an instance of String
+  fails "String#+ when self and the argument are in different ASCII-compatible encodings raises Encoding::CompatibilityError if neither are ASCII-only" # Expected Encoding::CompatibilityError but no exception was raised ("éé" was returned)
+  fails "String#+ when self and the argument are in different ASCII-compatible encodings uses self's encoding if both are ASCII-only" # ArgumentError: unknown encoding name - SHIFT_JIS
+  fails "String#+ when self and the argument are in different ASCII-compatible encodings uses the argument's encoding if self is ASCII-only" # Expected #<Encoding:UTF-8> == #<Encoding:ISO-8859-1> to be truthy but was false
+  fails "String#+ when self is in an ASCII-incompatible encoding incompatible with the argument's encoding raises Encoding::CompatibilityError if neither are empty" # Expected Encoding::CompatibilityError but no exception was raised ("xy" was returned)
+  fails "String#+ when the argument is in an ASCII-incompatible encoding incompatible with self's encoding raises Encoding::CompatibilityError if neither are empty" # Expected Encoding::CompatibilityError but no exception was raised ("xy" was returned)
+  fails "String#-@ returns the same object for equal unfrozen strings" # Expected "this is a string" not to be identical to "this is a string"
+  fails "String#<< when self is BINARY and argument is US-ASCII uses BINARY encoding" # NotImplementedError: String#<< not supported. Mutable String methods are not supported in Opal.
+  fails "String#<< with Integer returns a BINARY string if self is US-ASCII and the argument is between 128-255 (inclusive)" # NotImplementedError: String#<< not supported. Mutable String methods are not supported in Opal.
+  fails "String#<=> with String compares the indices of the encodings when the strings have identical non-ASCII-compatible bytes" # Expected 0 == -1 to be truthy but was false
+  fails "String#== considers encoding compatibility" # Expected true to be false
+  fails "String#== considers encoding difference of incompatible string" # Expected true to be false
+  fails "String#=== considers encoding compatibility" # Expected true to be false
+  fails "String#=== considers encoding difference of incompatible string" # Expected true to be false
+  fails "String#[] raises a RangeError if the index is too big" # Expected RangeError but no exception was raised (nil was returned)
+  fails "String#[] with Range raises a RangeError if one of the bound is too big" # Expected RangeError but no exception was raised (nil was returned)
+  fails "String#[] with Range raises a type error if a range is passed with a length" # Expected TypeError but no exception was raised ("el" was returned)
+  fails "String#[] with Range returns String instances" # Expected "" (StringSpecs::MyString) to be an instance of String
+  fails "String#[] with Regexp returns String instances" # Expected "" (StringSpecs::MyString) to be an instance of String
+  fails "String#[] with Regexp, index returns String instances" # Expected "he" (StringSpecs::MyString) to be an instance of String
+  fails "String#[] with String returns a String instance when given a subclass instance" # Expected "el" (StringSpecs::MyString) to be an instance of String
+  fails "String#[] with index, length raises a RangeError if the index or length is too big" # Expected RangeError but no exception was raised (nil was returned)
+  fails "String#[] with index, length returns String instances" # Expected "" (StringSpecs::MyString) to be an instance of String
+  fails "String#[] with index, length returns a string with the same encoding" # ArgumentError: unknown encoding name - ISO-8859-1
+  fails "String#bytes yields each byte to a block if one is given, returning self" # Expected [113, 103, 172, 78] to equal "東京"
+  fails "String#byteslice raises a RangeError if the index is too big" # Expected RangeError but no exception was raised (nil was returned)
+  fails "String#byteslice with Range raises a RangeError if one of the bound is too big" # Expected RangeError but no exception was raised (nil was returned)
+  fails "String#byteslice with Range raises a type error if a range is passed with a length" # Expected TypeError but no exception was raised ("el" was returned)
+  fails "String#byteslice with Range returns String instances" # Expected "" (StringSpecs::MyString) to be an instance of String
+  fails "String#byteslice with index, length raises a RangeError if the index or length is too big" # Expected RangeError but no exception was raised (nil was returned)
+  fails "String#byteslice with index, length returns String instances" # Expected "" (StringSpecs::MyString) to be an instance of String
+  fails "String#byteslice with index, length returns a string with the same encoding" # ArgumentError: unknown encoding name - ISO-8859-1
+  fails "String#capitalize ASCII-only case mapping does not capitalize non-ASCII characters" # ArgumentError: [String#capitalize] wrong number of arguments(1 for 0)
+  fails "String#capitalize full Unicode case mapping adapted for Lithuanian allows Turkic as an extra option (and applies Turkic semantics)" # ArgumentError: [String#capitalize] wrong number of arguments(2 for 0)
+  fails "String#capitalize full Unicode case mapping adapted for Lithuanian currently works the same as full Unicode case mapping" # ArgumentError: [String#capitalize] wrong number of arguments(1 for 0)
+  fails "String#capitalize full Unicode case mapping adapted for Turkic languages allows Lithuanian as an extra option" # ArgumentError: [String#capitalize] wrong number of arguments(2 for 0)
+  fails "String#capitalize full Unicode case mapping adapted for Turkic languages capitalizes ASCII characters according to Turkic semantics" # ArgumentError: [String#capitalize] wrong number of arguments(1 for 0)
+  fails "String#capitalize full Unicode case mapping only capitalizes the first resulting character when upcasing a character produces a multi-character sequence" # Expected "SS" to equal "Ss"
+  fails "String#capitalize full Unicode case mapping updates string metadata" # Expected "SSet" to equal "Sset"
+  fails "String#capitalize returns String instances when called on a subclass" # Expected "Hello" (StringSpecs::MyString) to be an instance of String
+  fails "String#casecmp independent of case returns nil if incompatible encodings" # NameError: uninitialized constant Encoding::EUC_JP
+  fails "String#casecmp? independent of case case folds" # Expected false to be true
+  fails "String#casecmp? independent of case for UNICODE characters returns true when downcase(:fold) on unicode" # Expected false to equal true
+  fails "String#casecmp? independent of case in UTF-8 mode for non-ASCII characters returns true when they are the same with normalized case" # Expected false to equal true
+  fails "String#casecmp? independent of case returns nil if incompatible encodings" # NameError: uninitialized constant Encoding::EUC_JP
+  fails "String#center with length, padding returns String instances when called on subclasses" # Expected "          " (StringSpecs::MyString) to be an instance of String
+  fails "String#chomp when passed no argument returns String instances when called on a subclass" # Expected "hello" (StringSpecs::MyString) to be an instance of String
+  fails "String#chomp when passed no argument returns a copy of the String when it is not modified" # Expected "abc" not to be identical to "abc"
+  fails "String#chop returns String instances when called on a subclass" # Expected "hello" (StringSpecs::MyString) to be an instance of String
+  fails "String#clone calls #initialize_copy on the new instance" # Expected nil to equal "string"
+  fails "String#clone copies singleton methods" # NoMethodError: undefined method `special' for "string"
+  fails "String#concat when self is BINARY and argument is US-ASCII uses BINARY encoding" # NoMethodError: undefined method `concat' for "abc"
+  fails "String#concat with Integer returns a BINARY string if self is US-ASCII and the argument is between 128-255 (inclusive)" # NoMethodError: undefined method `concat' for ""
+  fails "String#delete returns String instances when called on a subclass" # Expected "oh no" (StringSpecs::MyString) to be an instance of String
+  fails "String#delete_prefix returns a String instance when called on a subclass instance" # Expected "o" (StringSpecs::MyString) to be an instance of String
+  fails "String#delete_suffix returns a String instance when called on a subclass instance" # Expected "h" (StringSpecs::MyString) to be an instance of String
+  fails "String#downcase ASCII-only case mapping does not downcase non-ASCII characters" # ArgumentError: [String#downcase] wrong number of arguments(1 for 0)
+  fails "String#downcase case folding case folds special characters" # ArgumentError: [String#downcase] wrong number of arguments(1 for 0)
+  fails "String#downcase full Unicode case mapping adapted for Lithuanian allows Turkic as an extra option (and applies Turkic semantics)" # ArgumentError: [String#downcase] wrong number of arguments(2 for 0)
+  fails "String#downcase full Unicode case mapping adapted for Lithuanian currently works the same as full Unicode case mapping" # ArgumentError: [String#downcase] wrong number of arguments(1 for 0)
+  fails "String#downcase full Unicode case mapping adapted for Turkic languages allows Lithuanian as an extra option" # ArgumentError: [String#downcase] wrong number of arguments(2 for 0)
+  fails "String#downcase full Unicode case mapping adapted for Turkic languages downcases characters according to Turkic semantics" # ArgumentError: [String#downcase] wrong number of arguments(1 for 0)
+  fails "String#downcase returns a String instance for subclasses" # Expected "foobar" (StringSpecs::MyString) to be an instance of String
+  fails "String#dump does not take into account if a string is frozen" # NoMethodError: undefined method `dump' for "foo"
+  fails "String#dump includes .force_encoding(name) if the encoding isn't ASCII compatible" # NoMethodError: undefined method `dump' for "ࡶ"
+  fails "String#dump keeps origin encoding" # ArgumentError: unknown encoding name - ISO-8859-1
+  fails "String#dump returns a String instance" # NoMethodError: undefined method `dump' for ""
+  fails "String#dump returns a string with # not escaped when followed by any other character" # NoMethodError: undefined method `dump' for "#"
+  fails "String#dump returns a string with \" and \\ escaped with a backslash" # NoMethodError: undefined method `dump' for "\""
+  fails "String#dump returns a string with \\#<char> when # is followed by $, @, @@, {" # NoMethodError: undefined method `dump' for "\#$PATH"
+  fails "String#dump returns a string with lower-case alpha characters unescaped" # NoMethodError: undefined method `dump' for "a"
+  fails "String#dump returns a string with multi-byte UTF-8 characters replaced by \\u{} notation with upper-case hex digits" # NoMethodError: undefined method `dump' for "\u0080"
+  fails "String#dump returns a string with non-printing ASCII characters replaced by \\x notation" # NoMethodError: undefined method `dump' for "\u0000"
+  fails "String#dump returns a string with non-printing single-byte UTF-8 characters replaced by \\x notation" # NoMethodError: undefined method `dump' for "\u0000"
+  fails "String#dump returns a string with numeric characters unescaped" # NoMethodError: undefined method `dump' for "0"
+  fails "String#dump returns a string with printable non-alphanumeric characters unescaped" # NoMethodError: undefined method `dump' for " "
+  fails "String#dump returns a string with special characters replaced with \\<char> notation" # NoMethodError: undefined method `dump' for "\a"
+  fails "String#dump returns a string with upper-case alpha characters unescaped" # NoMethodError: undefined method `dump' for "A"
+  fails "String#dump wraps string with \"" # NoMethodError: undefined method `dump' for "foo"
+  fails "String#dup calls #initialize_copy on the new instance" # Expected nil to equal "string"
+  fails "String#each_byte keeps iterating from the old position (to new string end) when self changes" # NotImplementedError: String#<< not supported. Mutable String methods are not supported in Opal.
+  fails "String#each_grapheme_cluster is unicode aware" # NoMethodError: undefined method `each_grapheme_cluster' for "Ç∂éƒg"
+  fails "String#each_grapheme_cluster passes each char in self to the given block" # NoMethodError: undefined method `each_grapheme_cluster' for "hello"
+  fails "String#each_grapheme_cluster passes each grapheme cluster in self to the given block" # NoMethodError: undefined method `each_grapheme_cluster' for "ab🏳️\u200D🌈🐾"
+  fails "String#each_grapheme_cluster returns a different character if the String is transcoded" # NoMethodError: undefined method `each_grapheme_cluster' for "€"
+  fails "String#each_grapheme_cluster returns characters in the same encoding as self" # ArgumentError: unknown encoding name - Shift_JIS
+  fails "String#each_grapheme_cluster returns self" # NoMethodError: undefined method `each_grapheme_cluster' for "ab🏳️\u200D🌈🐾"
+  fails "String#each_grapheme_cluster uses the String's encoding to determine what characters it contains" # NoMethodError: undefined method `each_grapheme_cluster' for "𤭢"
+  fails "String#each_grapheme_cluster when no block is given returned enumerator size should return the size of the string" # NoMethodError: undefined method `each_grapheme_cluster' for "hello"
+  fails "String#each_grapheme_cluster when no block is given returns an enumerator" # NoMethodError: undefined method `each_grapheme_cluster' for "hello"
+  fails "String#each_grapheme_cluster works if the String's contents is invalid for its encoding" # Expected true to be false
+  fails "String#each_grapheme_cluster works with multibyte characters" # NoMethodError: undefined method `each_grapheme_cluster' for "覇"
+  fails "String#each_grapheme_cluster yields String instances for subclasses" # NoMethodError: undefined method `each_grapheme_cluster' for "abc"
+  fails "String#encode when passed to, from, options returns a copy in the destination encoding when both encodings are the same" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encoding for Strings with \\x escapes returns BINARY when an escape creates a byte with the 8th bit set if the source encoding is US-ASCII" # Expected #<Encoding:UTF-8> to equal #<Encoding:ASCII-8BIT (dummy)>
+  fails "String#end_with? raises an Encoding::CompatibilityError if the encodings are incompatible" # NameError: uninitialized constant Encoding::EUC_JP
+  fails "String#eql? considers encoding compatibility" # Expected true to be false
+  fails "String#eql? considers encoding difference of incompatible string" # Expected true to be false
+  fails "String#force_encoding with a special encoding name accepts valid special encoding names" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#force_encoding with a special encoding name defaults to BINARY if special encoding name is not set" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#grapheme_clusters is unicode aware" # NoMethodError: undefined method `grapheme_clusters' for "Ç∂éƒg"
+  fails "String#grapheme_clusters passes each char in self to the given block" # NoMethodError: undefined method `grapheme_clusters' for "hello"
+  fails "String#grapheme_clusters passes each grapheme cluster in self to the given block" # NoMethodError: undefined method `grapheme_clusters' for "ab🏳️\u200D🌈🐾"
+  fails "String#grapheme_clusters returns a different character if the String is transcoded" # NoMethodError: undefined method `grapheme_clusters' for "€"
+  fails "String#grapheme_clusters returns an array when no block given" # NoMethodError: undefined method `grapheme_clusters' for "ab🏳️\u200D🌈🐾"
+  fails "String#grapheme_clusters returns characters in the same encoding as self" # ArgumentError: unknown encoding name - Shift_JIS
+  fails "String#grapheme_clusters returns self" # NoMethodError: undefined method `grapheme_clusters' for "ab🏳️\u200D🌈🐾"
+  fails "String#grapheme_clusters uses the String's encoding to determine what characters it contains" # NoMethodError: undefined method `grapheme_clusters' for "𤭢"
+  fails "String#grapheme_clusters works if the String's contents is invalid for its encoding" # Expected true to be false
+  fails "String#grapheme_clusters works with multibyte characters" # NoMethodError: undefined method `grapheme_clusters' for "覇"
+  fails "String#gsub with pattern and block does not set $~ for procs created from methods" # Expected "he<l><l>o" == "he<unset><unset>o" to be truthy but was false
+  fails "String#gsub with pattern and block raises an Encoding::CompatibilityError if the encodings are not compatible" # Expected Encoding::CompatibilityError but got: ArgumentError (unknown encoding name - iso-8859-5)
+  fails "String#gsub with pattern and block replaces the incompatible part properly even if the encodings are not compatible" # ArgumentError: unknown encoding name - iso-8859-5
+  fails "String#gsub with pattern and block uses the compatible encoding if they are compatible" # Expected #<Encoding:UTF-8> == #<Encoding:ASCII-8BIT> to be truthy but was false
+  fails "String#gsub with pattern and replacement doesn't freak out when replacing ^" # Expected  " Text  " ==  " Text " to be truthy but was false
+  fails "String#gsub with pattern and replacement replaces \\k named backreferences with the regexp's corresponding capture" # Exception: named captures are not supported in javascript: "(?<foo>[aeiou])"
+  fails "String#gsub with pattern and replacement returns String instances when called on a subclass" # Expected "" (StringSpecs::MyString) to be an instance of String
+  fails "String#gsub with pattern and replacement supports \\G which matches at the beginning of the remaining (non-matched) string" # Expected "hello homely world. hah!" == "huh? huh? world. hah!" to be truthy but was false
+  fails "String#include? with String raises an Encoding::CompatibilityError if the encodings are incompatible" # NameError: uninitialized constant Encoding::EUC_JP
+  fails "String#inspect returns a string with non-printing characters replaced by \\x notation" # Expected "\"\\xA0\"" to be computed by " ".inspect (computed "\" \"" instead)
+  fails "String#inspect uses \\x notation for broken UTF-8 sequences" # Expected "\"ð\\u009F\"" == "\"\\xF0\\x9F\"" to be truthy but was false
+  fails "String#inspect when the string's encoding is different than the result's encoding and the string has both ASCII-compatible and ASCII-incompatible chars returns a string with the non-ASCII characters replaced by \\u notation" # Expected "\"hello привет\"" == "\"hello \\u043F\\u0440\\u0438\\u0432\\u0435\\u0442\"" to be truthy but was false
+  fails "String#inspect when the string's encoding is different than the result's encoding and the string's encoding is ASCII-compatible but the characters are non-ASCII returns a string with the non-ASCII characters replaced by \\x notation" # ArgumentError: unknown encoding name - EUC-JP
+  fails "String#intern raises an EncodingError for UTF-8 String containing invalid bytes" # Expected true to equal false
+  fails "String#intern returns a US-ASCII Symbol for a UTF-8 String containing only US-ASCII characters" # Expected #<Encoding:UTF-16LE> to equal #<Encoding:ASCII-8BIT (dummy)>
+  fails "String#intern returns a US-ASCII Symbol for a binary String containing only US-ASCII characters" # Expected #<Encoding:UTF-16LE> to equal #<Encoding:ASCII-8BIT (dummy)>
+  fails "String#intern returns a UTF-16LE Symbol for a UTF-16LE String containing non US-ASCII characters" # Error
+  fails "String#intern returns a binary Symbol for a binary String containing non US-ASCII characters" # Expected #<Encoding:UTF-16LE> to equal #<Encoding:ASCII-8BIT (dummy)>
+  fails "String#length adds 1 (and not 2) for a incomplete surrogate in UTF-16" # Expected 2 == 1 to be truthy but was false
+  fails "String#length adds 1 for a broken sequence in UTF-32" # Expected 4 == 1 to be truthy but was false
+  fails "String#length returns the correct length after force_encoding(BINARY)" # Expected 2 == 4 to be truthy but was false
+  fails "String#ljust with length, padding returns String instances when called on subclasses" # Expected "          " (StringSpecs::MyString) to be an instance of String
+  fails "String#next returns String instances when called on a subclass" # Expected "" (StringSpecs::MyString) to be an instance of String
+  fails "String#partition with String returns String instances when called on a subclass" # Expected "hello" (StringSpecs::MyString) to be an instance of String
+  fails "String#rjust with length, padding returns String instances when called on subclasses" # Expected "          " (StringSpecs::MyString) to be an instance of String
+  fails "String#rpartition with String returns String instances when called on a subclass" # Expected "hello" (StringSpecs::MyString) to be an instance of String
+  fails "String#rpartition with String returns new object if doesn't match" # Expected "hello".equal? "hello" to be falsy but was true
+  fails "String#size adds 1 (and not 2) for a incomplete surrogate in UTF-16" # Expected 2 == 1 to be truthy but was false
+  fails "String#size adds 1 for a broken sequence in UTF-32" # Expected 4 == 1 to be truthy but was false
+  fails "String#size returns the correct length after force_encoding(BINARY)" # Expected 2 == 4 to be truthy but was false
+  fails "String#slice raises a RangeError if the index is too big" # Expected RangeError but no exception was raised (nil was returned)
+  fails "String#slice with Range raises a RangeError if one of the bound is too big" # Expected RangeError but no exception was raised (nil was returned)
+  fails "String#slice with Range raises a type error if a range is passed with a length" # Expected TypeError but no exception was raised ("el" was returned)
+  fails "String#slice with Range returns String instances" # Expected "" (StringSpecs::MyString) to be an instance of String
+  fails "String#slice with Regexp returns String instances" # Expected "" (StringSpecs::MyString) to be an instance of String
+  fails "String#slice with Regexp, index returns String instances" # Expected "he" (StringSpecs::MyString) to be an instance of String
+  fails "String#slice with String returns a String instance when given a subclass instance" # Expected "el" (StringSpecs::MyString) to be an instance of String
+  fails "String#slice with index, length raises a RangeError if the index or length is too big" # Expected RangeError but no exception was raised (nil was returned)
+  fails "String#slice with index, length returns String instances" # Expected "" (StringSpecs::MyString) to be an instance of String
+  fails "String#slice with index, length returns a string with the same encoding" # ArgumentError: unknown encoding name - ISO-8859-1
+  fails "String#split with Regexp allows concurrent Regexp calls in a shared context" # NotImplementedError: Thread creation not available
+  fails "String#split with Regexp applies the limit to the number of split substrings, without counting captures" # Expected ["a", "aBa"] to equal ["a", "B", "", "", "aBa"]
+  fails "String#split with Regexp for a String subclass yields instances of String" # Expected nil (NilClass) to be an instance of String
+  fails "String#split with Regexp returns String instances based on self" # Expected "x" (StringSpecs::MyString) to be an instance of String
+  fails "String#split with Regexp returns an ArgumentError if an invalid UTF-8 string is supplied" # NotImplementedError: String#chop! not supported. Mutable String methods are not supported in Opal.
+  fails "String#split with Regexp when a block is given returns a string as is (and doesn't call block) if it is empty" # Expected [] == "" to be truthy but was false
+  fails "String#split with Regexp when a block is given yields each split letter" # Expected ["c", "h", "u", "n", "k", "y"] == "chunky" to be truthy but was false
+  fails "String#split with Regexp when a block is given yields each split substring with a pattern" # Expected ["chunky", "bacon"] == "chunky-bacon" to be truthy but was false
+  fails "String#split with Regexp when a block is given yields each split substring with a regexp pattern" # Expected ["chunky", "bacon"] == "chunky:bacon" to be truthy but was false
+  fails "String#split with Regexp when a block is given yields each split substring with default pattern for a non-ASCII string" # Expected ["l'été", "arrive", "bientôt"] == "l'été arrive bientôt" to be truthy but was false
+  fails "String#split with Regexp when a block is given yields each split substring with default pattern" # Expected ["chunky", "bacon"] == "chunky bacon" to be truthy but was false
+  fails "String#split with Regexp when a block is given yields each split substring with empty regexp pattern and limit" # Expected ["c", "h", "unky"] == "chunky" to be truthy but was false
+  fails "String#split with Regexp when a block is given yields each split substring with empty regexp pattern" # Expected ["c", "h", "u", "n", "k", "y"] == "chunky" to be truthy but was false
+  fails "String#split with Regexp when a block is given yields the string when limit is 1" # Expected ["chunky bacon"] == "chunky bacon" to be truthy but was false
+  fails "String#split with String returns String instances based on self" # Expected "x" (StringSpecs::MyString) to be an instance of String
+  fails "String#split with String when $; is not nil warns" # Expected warning to match: /warning: \$; is set to non-nil value/ but got: ""
+  fails "String#squeeze returns String instances when called on a subclass" # Expected "oh no!" (StringSpecs::MyString) to be an instance of String
+  fails "String#sub with pattern, replacement returns String instances when called on a subclass" # Expected "" (StringSpecs::MyString) to be an instance of String
+  fails "String#sub with pattern, replacement returns a copy of self when no modification is made" # Expected "hello" not to be identical to "hello"
+  fails "String#sub with pattern, replacement supports \\G which matches at the beginning of the string" # Expected "hello world!" == "hi world!" to be truthy but was false
+  fails "String#succ returns String instances when called on a subclass" # Expected "" (StringSpecs::MyString) to be an instance of String
+  fails "String#swapcase ASCII-only case mapping does not swapcase non-ASCII characters" # ArgumentError: [String#swapcase] wrong number of arguments(1 for 0)
+  fails "String#swapcase full Unicode case mapping adapted for Lithuanian allows Turkic as an extra option (and applies Turkic semantics)" # ArgumentError: [String#swapcase] wrong number of arguments(2 for 0)
+  fails "String#swapcase full Unicode case mapping adapted for Lithuanian currently works the same as full Unicode case mapping" # ArgumentError: [String#swapcase] wrong number of arguments(1 for 0)
+  fails "String#swapcase full Unicode case mapping adapted for Turkic languages allows Lithuanian as an extra option" # ArgumentError: [String#swapcase] wrong number of arguments(2 for 0)
+  fails "String#swapcase full Unicode case mapping adapted for Turkic languages swaps case of ASCII characters according to Turkic semantics" # ArgumentError: [String#swapcase] wrong number of arguments(1 for 0)
+  fails "String#swapcase full Unicode case mapping updates string metadata" # Expected "aßET" to equal "aSSET"
+  fails "String#swapcase full Unicode case mapping works for all of Unicode with no option" # Expected "äÖü" to equal "ÄöÜ"
+  fails "String#swapcase returns String instances when called on a subclass" # Expected "" (StringSpecs::MyString) to be an instance of String
+  fails "String#to_sym raises an EncodingError for UTF-8 String containing invalid bytes" # Expected true to equal false
+  fails "String#to_sym returns a US-ASCII Symbol for a UTF-8 String containing only US-ASCII characters" # Expected #<Encoding:UTF-16LE> to equal #<Encoding:ASCII-8BIT (dummy)>
+  fails "String#to_sym returns a US-ASCII Symbol for a binary String containing only US-ASCII characters" # Expected #<Encoding:UTF-16LE> to equal #<Encoding:ASCII-8BIT (dummy)>
+  fails "String#to_sym returns a UTF-16LE Symbol for a UTF-16LE String containing non US-ASCII characters" # ERROR
+  fails "String#to_sym returns a binary Symbol for a binary String containing non US-ASCII characters" # Expected #<Encoding:UTF-16LE> to equal #<Encoding:ASCII-8BIT (dummy)>
+  fails "String#tr returns Stringinstances when called on a subclass" # Expected "hallo" (StringSpecs::MyString) to be an instance of String
+  fails "String#tr_s returns String instances when called on a subclass" # Expected "hallo" (StringSpecs::MyString) to be an instance of String
+  fails "String#undump Limitations cannot undump non ASCII-compatible string" # NoMethodError: undefined method `undump' for "\"foo\""
+  fails "String#undump always returns String instance" # NoMethodError: undefined method `undump' for "\"foo\""
+  fails "String#undump does not take into account if a string is frozen" # NoMethodError: undefined method `undump' for "\"foo\""
+  fails "String#undump invalid dump raises RuntimeError exception if wrapping \" are missing" # NoMethodError: undefined method `undump' for "foo"
+  fails "String#undump invalid dump raises RuntimeError if string contains \u0000 character" # NoMethodError: undefined method `undump' for "\"foo\u0000\""
+  fails "String#undump invalid dump raises RuntimeError if string contains non ASCII character" # NoMethodError: undefined method `undump' for "\"あ\""
+  fails "String#undump invalid dump raises RuntimeError if there are some excessive \"" # NoMethodError: undefined method `undump' for "\" \"\" \""
+  fails "String#undump invalid dump raises RuntimeError if there is incorrect \\x sequence" # NoMethodError: undefined method `undump' for "\"\\x\""
+  fails "String#undump invalid dump raises RuntimeError if there is malformed dump of non ASCII-compatible string" # NoMethodError: undefined method `undump' for "\"\".force_encoding(\"ASCII-8BIT\""
+  fails "String#undump invalid dump raises RuntimeError in there is incorrect \\u sequence" # NoMethodError: undefined method `undump' for "\"\\u\""
+  fails "String#undump keeps origin encoding" # ArgumentError: unknown encoding name - ISO-8859-1
+  fails "String#undump returns a string with # not escaped when followed by any other character" # NoMethodError: undefined method `undump' for "\"#\""
+  fails "String#undump returns a string with \\uXXXX notation replaced with multi-byte UTF-8 characters" # NoMethodError: undefined method `undump' for "\"\\u0080\""
+  fails "String#undump returns a string with \\u{} notation replaced with multi-byte UTF-8 characters" # NoMethodError: undefined method `undump' for "\"\\u80\""
+  fails "String#undump returns a string with \\x notation replaced with non-printing ASCII character" # NoMethodError: undefined method `undump' for "\"\\x00\""
+  fails "String#undump returns a string with lower-case alpha characters unescaped" # NoMethodError: undefined method `undump' for "\"a\""
+  fails "String#undump returns a string with numeric characters unescaped" # NoMethodError: undefined method `undump' for "\"0\""
+  fails "String#undump returns a string with printable non-alphanumeric characters" # NoMethodError: undefined method `undump' for "\" \""
+  fails "String#undump returns a string with special characters in \\<char> notation replaced with the characters" # NoMethodError: undefined method `undump' for "\"\\a\""
+  fails "String#undump returns a string with unescaped sequences \" and \\" # NoMethodError: undefined method `undump' for "\"\\\"\""
+  fails "String#undump returns a string with unescaped sequences \\#<char> when # is followed by $, @, {" # NoMethodError: undefined method `undump' for "\"\\\#$PATH\""
+  fails "String#undump returns a string with upper-case alpha characters unescaped" # NoMethodError: undefined method `undump' for "\"A\""
+  fails "String#undump strips outer \"" # NoMethodError: undefined method `undump' for "\"foo\""
+  fails "String#undump undumps correctly string produced from non ASCII-compatible one" # NoMethodError: undefined method `dump' for "ࡶ"
+  fails "String#unicode_normalize raises an Encoding::CompatibilityError if string is not in an unicode encoding" # ArgumentError: unknown encoding name - ISO-8859-1
+  fails "String#unicode_normalized? raises an Encoding::CompatibilityError if the string is not in an unicode encoding" # ArgumentError: unknown encoding name - ISO-8859-1
+  fails "String#unicode_normalized? returns true if str is in Unicode normalization form (nfc)" # Expected true to be false
+  fails "String#unicode_normalized? returns true if str is in Unicode normalization form (nfd)" # Expected true to be false
+  fails "String#unicode_normalized? returns true if str is in Unicode normalization form (nfkc)" # Expected true to be false
+  fails "String#unicode_normalized? returns true if str is in Unicode normalization form (nfkd)" # Expected true to be false
+  fails "String#unpack with format 'm' when given count 0 raises an ArgumentError for an invalid base64 character" # Expected ArgumentError but no exception was raised (["test"] was returned)
+  fails "String#unpack1 returns the first value of #unpack" # RuntimeError: Unsupported unpack directive "x" (no chunk reader defined)
+  fails "String#unpack1 starts unpacking from the given offset" # RuntimeError: Unsupported unpack directive "x" (no chunk reader defined)
+  fails "String#upcase ASCII-only case mapping does not upcase non-ASCII characters" # ArgumentError: [String#upcase] wrong number of arguments(1 for 0)
+  fails "String#upcase full Unicode case mapping adapted for Lithuanian allows Turkic as an extra option (and applies Turkic semantics)" # ArgumentError: [String#upcase] wrong number of arguments(2 for 0)
+  fails "String#upcase full Unicode case mapping adapted for Lithuanian currently works the same as full Unicode case mapping" # ArgumentError: [String#upcase] wrong number of arguments(1 for 0)
+  fails "String#upcase full Unicode case mapping adapted for Turkic languages allows Lithuanian as an extra option" # ArgumentError: [String#upcase] wrong number of arguments(2 for 0)
+  fails "String#upcase full Unicode case mapping adapted for Turkic languages upcases ASCII characters according to Turkic semantics" # ArgumentError: [String#upcase] wrong number of arguments(1 for 0)
+  fails "String#upcase returns a String instance for subclasses" # Expected "FOOBAR" (StringSpecs::MyString) to be an instance of String
+  fails "String#valid_encoding? returns true for IBM720 encoding self is valid in" # ArgumentError: unknown encoding name - IBM720
+  fails "String.new accepts an encoding argument" # ArgumentError: [String.new] wrong number of arguments(2 for -1)
+  fails "String.new is called on subclasses" # Expected nil to equal "subclass"
+end
diff --git a/spec/filters/bugs/stringscanner.rb b/spec/filters/bugs/stringscanner.rb
new file mode 100644
index 00000000..ffb6e99f
--- /dev/null
+++ b/spec/filters/bugs/stringscanner.rb
@@ -0,0 +1,79 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "StringScanner" do
+  fails "StringScanner#<< concatenates the given argument to self and returns self"
+  fails "StringScanner#<< raises a TypeError if the given argument can't be converted to a String"
+  fails "StringScanner#<< when passed an Integer doesn't call to_int on the argument" # Expected TypeError but got: NoMethodError (undefined method `<<' for #<StringScanner:0x28c>)
+  fails "StringScanner#<< when passed an Integer raises a TypeError" # Expected TypeError but got: NoMethodError (undefined method `<<' for #<StringScanner:0x290>)
+  fails "StringScanner#[] raises a IndexError when there's no named capture"
+  fails "StringScanner#[] returns named capture"
+  fails "StringScanner#check treats String as the pattern itself" # Expected nil == "This" to be truthy but was false
+  fails "StringScanner#check_until raises TypeError if given a String" # Expected TypeError (wrong argument type String (expected Regexp)) but no exception was raised (nil was returned)
+  fails "StringScanner#clear set the scan pointer to the end of the string and clear matching data."
+  fails "StringScanner#clear warns in verbose mode that the method is obsolete"
+  fails "StringScanner#concat concatenates the given argument to self and returns self"
+  fails "StringScanner#concat raises a TypeError if the given argument can't be converted to a String"
+  fails "StringScanner#concat when passed an Integer doesn't call to_int on the argument" # Expected TypeError but got: NoMethodError (undefined method `concat' for #<StringScanner:0x362>)
+  fails "StringScanner#concat when passed an Integer raises a TypeError" # Expected TypeError but got: NoMethodError (undefined method `concat' for #<StringScanner:0x366>)
+  fails "StringScanner#dup copies previous match state"
+  fails "StringScanner#empty? returns false if the scan pointer is not at the end of the string" # NoMethodError: undefined method `empty?' for #<StringScanner:0x726>
+  fails "StringScanner#empty? returns true if the scan pointer is at the end of the string" # NoMethodError: undefined method `empty?' for #<StringScanner:0x72a>
+  fails "StringScanner#empty? warns in verbose mode that the method is obsolete"
+  fails "StringScanner#exist? raises TypeError if given a String" # Expected TypeError (wrong argument type String (expected Regexp)) but got: Exception (pattern.exec is not a function)
+  fails "StringScanner#getbyte is not multi-byte character sensitive"
+  fails "StringScanner#getbyte returns an instance of String when passed a String subclass"
+  fails "StringScanner#getbyte returns nil at the end of the string"
+  fails "StringScanner#getbyte scans one byte and returns it"
+  fails "StringScanner#getbyte warns in verbose mode that the method is obsolete"
+  fails "StringScanner#getch is multi-byte character sensitive"
+  fails "StringScanner#initialize converts the argument into a string using #to_str"
+  fails "StringScanner#inspect returns a string that represents the StringScanner object"
+  fails "StringScanner#matched returns the last matched string"
+  fails "StringScanner#matched? returns false if there's no match"
+  fails "StringScanner#matched? returns true if the last match was successful"
+  fails "StringScanner#peek raises a ArgumentError when the passed argument is negative"
+  fails "StringScanner#peek raises a RangeError when the passed argument is a Bignum"
+  fails "StringScanner#peek returns at most the specified number of bytes from the current position" # Expected "ét" to equal "é"
+  fails "StringScanner#peep raises a ArgumentError when the passed argument is negative"
+  fails "StringScanner#peep raises a RangeError when the passed argument is a Bignum"
+  fails "StringScanner#peep returns an empty string when the passed argument is zero"
+  fails "StringScanner#peep returns an instance of String when passed a String subclass"
+  fails "StringScanner#peep returns at most the specified number of bytes from the current position" # NoMethodError: undefined method `peep' for #<StringScanner:0x590>
+  fails "StringScanner#peep warns in verbose mode that the method is obsolete"
+  fails "StringScanner#pointer returns 0 in the reset position"
+  fails "StringScanner#pointer returns the length of the string in the terminate position"
+  fails "StringScanner#pointer returns the position of the scan pointer"
+  fails "StringScanner#pointer= modify the scan pointer"
+  fails "StringScanner#pointer= positions from the end if the argument is negative"
+  fails "StringScanner#pointer= raises a RangeError if position too far backward"
+  fails "StringScanner#pointer= raises a RangeError when the passed argument is out of range"
+  fails "StringScanner#pos returns the position of the scan pointer"
+  fails "StringScanner#pos= raises a RangeError if position too far backward"
+  fails "StringScanner#pos= raises a RangeError when the passed argument is out of range"
+  fails "StringScanner#restsize is equivalent to rest.size"
+  fails "StringScanner#restsize returns the length of the rest of the string" # NoMethodError: undefined method `restsize' for #<StringScanner:0x4a4>
+  fails "StringScanner#restsize warns in verbose mode that the method is obsolete"
+  fails "StringScanner#scan raises a TypeError if pattern isn't a Regexp nor String" # Expected TypeError but no exception was raised (nil was returned)
+  fails "StringScanner#scan treats String as the pattern itself" # Expected nil == "This" to be truthy but was false
+  fails "StringScanner#scan with fixed_anchor: true returns the matched string" # ArgumentError: [StringScanner#initialize] wrong number of arguments(2 for 1)
+  fails "StringScanner#scan with fixed_anchor: true treats \\A as matching from the beginning of string" # ArgumentError: [StringScanner#initialize] wrong number of arguments(2 for 1)
+  fails "StringScanner#scan with fixed_anchor: true treats ^ as matching from the beginning of line" # ArgumentError: [StringScanner#initialize] wrong number of arguments(2 for 1)
+  fails "StringScanner#scan_full returns the matched string if the third argument is true and advances the scan pointer if the second argument is true"
+  fails "StringScanner#scan_full returns the matched string if the third argument is true"
+  fails "StringScanner#scan_full returns the number of bytes advanced and advances the scan pointer if the second argument is true"
+  fails "StringScanner#scan_full returns the number of bytes advanced"
+  fails "StringScanner#scan_until raises TypeError if given a String" # Expected TypeError (wrong argument type String (expected Regexp)) but no exception was raised (nil was returned)
+  fails "StringScanner#search_full raises TypeError if given a String" # Expected TypeError (wrong argument type String (expected Regexp)) but got: NoMethodError (undefined method `search_full' for #<StringScanner:0x196 @string="This is a test" @pos=0 @matched=nil @working="This is a test" @match=[]>)
+  fails "StringScanner#search_full returns the matched string if the third argument is true and advances the scan pointer if the second argument is true"
+  fails "StringScanner#search_full returns the matched string if the third argument is true"
+  fails "StringScanner#search_full returns the number of bytes advanced and advances the scan pointer if the second argument is true"
+  fails "StringScanner#search_full returns the number of bytes advanced"
+  fails "StringScanner#size returns nil if there is no last match" # NoMethodError: undefined method `size' for #<StringScanner:0x9e0d6 @string="This is a test" @pos=0 @matched=nil @working="This is a test" @match=[]>
+  fails "StringScanner#size returns the number of captures groups of the last match" # NoMethodError: undefined method `size' for #<StringScanner:0x9e0dc @string="This is a test" @pos=3 @matched="Thi" @working="s is a test" @match=["Thi", "T", "h", "i"] @prev_pos=0>
+  fails "StringScanner#skip_until raises TypeError if given a String" # Expected TypeError (wrong argument type String (expected Regexp)) but no exception was raised (nil was returned)
+  fails "StringScanner#string returns the string being scanned"
+  fails "StringScanner#string= changes the string being scanned to the argument and resets the scanner"
+  fails "StringScanner#string= converts the argument into a string using #to_str"
+  fails "StringScanner#unscan raises a ScanError when the previous match had failed"
+  fails "StringScanner#unscan set the scan pointer to the previous position"
+  fails "StringScanner.must_C_version returns self"
+end
diff --git a/spec/filters/bugs/struct.rb b/spec/filters/bugs/struct.rb
new file mode 100644
index 00000000..cbae238b
--- /dev/null
+++ b/spec/filters/bugs/struct.rb
@@ -0,0 +1,17 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "Struct" do
+  fails "Struct#dig returns the value by the index" # Expected nil == "one" to be truthy but was false
+  fails "Struct#hash returns different hashes for structs with different values when using keyword_init: true" # NameError: wrong constant name 1 non symbol member
+  fails "Struct#hash returns the same integer for structs with the same content" # Expected "Hash" (String) to be kind of Integer
+  fails "Struct#to_h with block coerces returned pair to Array with #to_ary" # Expected {"make"=>nil, "model"=>nil, "year"=>nil} == {"b"=>"b"} to be truthy but was false
+  fails "Struct#to_h with block converts [key, value] pairs returned by the block to a hash" # Expected {"make"=>"Ford", "model"=>"Ranger", "year"=>nil} == {"make"=>"ford", "model"=>"ranger", "year"=>""} to be truthy but was false
+  fails "Struct#to_h with block does not coerce returned pair to Array with #to_a" # Expected TypeError (/wrong element type MockObject/) but no exception was raised ({"make"=>nil, "model"=>nil, "year"=>nil} was returned)
+  fails "Struct#to_h with block raises ArgumentError if block returns longer or shorter array" # Expected ArgumentError (/element has wrong array length/) but no exception was raised ({"make"=>nil, "model"=>nil, "year"=>nil} was returned)
+  fails "Struct#to_h with block raises TypeError if block returns something other than Array" # Expected TypeError (/wrong element type String/) but no exception was raised ({"make"=>nil, "model"=>nil, "year"=>nil} was returned)
+  fails "Struct-based class#dup retains an included module in the ancestor chain for the struct's singleton class"
+  fails "Struct.new keyword_init: true option raises when there is a duplicate member" # Expected ArgumentError (duplicate member: foo) but no exception was raised (#<Class:0x294> was returned)
+  fails "Struct.new raises ArgumentError when there is a duplicate member" # Expected ArgumentError (duplicate member: foo) but no exception was raised (#<Class:0x256> was returned)
+  fails "Struct.new raises a ArgumentError if passed a Hash with an unknown key" # Just like "def m(a: nil); end; m(b: nil)" doesn't raise an error. That's a bug in the handling of kwargs
+  fails_badly "Struct#hash returns different hashes for different struct classes" # A failure in Chromium that once passes, other times it doesn't, most probably related to some kind of undeterminism.
+  fails_badly "Struct#hash returns different hashes for structs with different values" # Ditto
+end
diff --git a/spec/filters/bugs/symbol.rb b/spec/filters/bugs/symbol.rb
new file mode 100644
index 00000000..b8c32ca3
--- /dev/null
+++ b/spec/filters/bugs/symbol.rb
@@ -0,0 +1,6 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "Symbol" do
+  fails "Symbol#to_proc produces a Proc that always returns [[:req], [:rest]] for #parameters" # Expected [["rest", "args"], ["block", "block"]] == [["req"], ["rest"]] to be truthy but was false
+  fails "Symbol#to_proc produces a Proc with arity -2" # Expected -1 == -2 to be truthy but was false
+  fails "Symbol#to_proc returns a Proc with #lambda? true" # Expected #<Proc:0xd6f0>.lambda? to be truthy but was false
+end
diff --git a/spec/filters/bugs/time.rb b/spec/filters/bugs/time.rb
new file mode 100644
index 00000000..305a4a46
--- /dev/null
+++ b/spec/filters/bugs/time.rb
@@ -0,0 +1,117 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "Time" do
+  fails "Time#+ zone is a timezone object preserves time zone" # ArgumentError: Opal does not support explicitly specifying UTC offset for Time
+  fails "Time#- tracks microseconds from a Rational" # Expected 0 to equal 123456
+  fails "Time#- zone is a timezone object preserves time zone" # ArgumentError: Opal does not support explicitly specifying UTC offset for Time
+  fails "Time#ceil ceils to 0 decimal places with an explicit argument" # NoMethodError: undefined method `ceil' for 2010-03-30 05:43:25 UTC
+  fails "Time#ceil ceils to 2 decimal places with an explicit argument" # NoMethodError: undefined method `ceil' for 2010-03-30 05:43:25 UTC
+  fails "Time#ceil ceils to 4 decimal places with an explicit argument" # NoMethodError: undefined method `ceil' for 2010-03-30 05:43:25 UTC
+  fails "Time#ceil ceils to 7 decimal places with an explicit argument" # NoMethodError: undefined method `ceil' for 2010-03-30 05:43:25 UTC
+  fails "Time#ceil copies own timezone to the returning value" # NoMethodError: undefined method `ceil' for 2010-03-30 05:43:25 UTC
+  fails "Time#ceil defaults to ceiling to 0 places" # NoMethodError: undefined method `ceil' for 2010-03-30 05:43:25 UTC
+  fails "Time#ceil returns an instance of Time, even if #ceil is called on a subclass" # Expected Time to be identical to #<Class:0x38c06>
+  fails "Time#dup returns a clone of Time instance"
+  fails "Time#floor copies own timezone to the returning value" # NoMethodError: undefined method `floor' for 2010-03-30 05:43:25 UTC
+  fails "Time#floor defaults to flooring to 0 places" # NoMethodError: undefined method `floor' for 2010-03-30 05:43:25 UTC
+  fails "Time#floor floors to 0 decimal places with an explicit argument" # NoMethodError: undefined method `floor' for 2010-03-30 05:43:25 UTC
+  fails "Time#floor floors to 7 decimal places with an explicit argument" # NoMethodError: undefined method `floor' for 2010-03-30 05:43:25 UTC
+  fails "Time#floor returns an instance of Time, even if #floor is called on a subclass" # Expected Time to be identical to #<Class:0x188fa>
+  fails "Time#getlocal raises ArgumentError if the String argument is not in an ASCII-compatible encoding"
+  fails "Time#getlocal with a timezone argument accepts timezone argument that must have #local_to_utc and #utc_to_local methods" # Expected to not get Exception but got: NoMethodError (undefined method `getlocal' for 2000-01-01 12:00:00 UTC)
+  fails "Time#getlocal with a timezone argument does not raise exception if timezone does not implement #local_to_utc method" # Expected to not get Exception but got: NoMethodError (undefined method `getlocal' for 2000-01-01 12:00:00 UTC)
+  fails "Time#getlocal with a timezone argument raises TypeError if timezone does not implement #utc_to_local method" # Expected TypeError (/can't convert \w+ into an exact number/) but got: NoMethodError (undefined method `getlocal' for 2000-01-01 12:00:00 UTC)
+  fails "Time#getlocal with a timezone argument returns a Time in the timezone" # NoMethodError: undefined method `getlocal' for 2000-01-01 12:00:00 UTC
+  fails "Time#getlocal with a timezone argument subject's class implements .find_timezone method calls .find_timezone to build a time object if passed zone name as a timezone argument" # NoMethodError: undefined method `getlocal' for 2000-01-01 12:00:00 UTC
+  fails "Time#getlocal with a timezone argument subject's class implements .find_timezone method does not call .find_timezone if passed any not string/numeric/timezone timezone argument" # Expected TypeError (/can't convert \w+ into an exact number/) but got: NoMethodError (undefined method `getlocal' for 2000-01-01 12:00:00 UTC)
+  fails "Time#gmtime converts self to UTC, modifying the receiver" # Expected 2007-01-09 03:00:00 UTC to equal 2007-01-09 12:00:00 UTC
+  fails "Time#hash returns an Integer" # Expected "Time:100000" (String) to be an instance of Integer
+  fails "Time#inspect omits trailing zeros from microseconds" # Expected "2007-11-01 15:25:00 UTC" == "2007-11-01 15:25:00.1 UTC" to be truthy but was false
+  fails "Time#inspect preserves microseconds" # Expected "2007-11-01 15:25:00 UTC" == "2007-11-01 15:25:00.123456 UTC" to be truthy but was false
+  fails "Time#inspect preserves nanoseconds" # Expected "2007-11-01 15:25:00 UTC" == "2007-11-01 15:25:00.123456789 UTC" to be truthy but was false
+  fails "Time#inspect uses the correct time zone with microseconds" # NoMethodError: undefined method `localtime' for 2000-01-01 00:00:00 UTC
+  fails "Time#inspect uses the correct time zone without microseconds" # NoMethodError: undefined method `localtime' for 2000-01-01 00:00:00 UTC
+  fails "Time#localtime raises ArgumentError if the String argument is not in an ASCII-compatible encoding"
+  fails "Time#nsec returns a positive value for dates before the epoch" # NoMethodError: undefined method `nsec' for 1969-11-12 13:18:57 UTC
+  fails "Time#round copies own timezone to the returning value"
+  fails "Time#round defaults to rounding to 0 places"
+  fails "Time#round returns an instance of Time, even if #round is called on a subclass"
+  fails "Time#round rounds to 0 decimal places with an explicit argument"
+  fails "Time#round rounds to 7 decimal places with an explicit argument"
+  fails "Time#strftime rounds an offset to the nearest second when formatting with %z"
+  fails "Time#strftime should be able to print the commercial year with leading zeroes"
+  fails "Time#strftime should be able to print the commercial year with only two digits"
+  fails "Time#strftime should be able to show default Logger format" # Expected "2001-12-03T04:05:06.000000 " == "2001-12-03T04:05:06.100000 " to be truthy but was false
+  fails "Time#strftime should be able to show the commercial week day"
+  fails "Time#strftime should be able to show the number of seconds since the unix epoch" # fails under FIJI et al TZs
+  fails "Time#strftime should be able to show the timezone of the date with a : separator"
+  fails "Time#strftime should be able to show the week number with the week starting on Sunday (%U) and Monday (%W)"
+  fails "Time#strftime with %N formats the microseconds of the second with %6N"
+  fails "Time#strftime with %N formats the milliseconds of the second with %3N"
+  fails "Time#strftime with %N formats the nanoseconds of the second with %9N"
+  fails "Time#strftime with %N formats the nanoseconds of the second with %N"
+  fails "Time#strftime with %N formats the picoseconds of the second with %12N"
+  fails "Time#subsec returns 0 as an Integer for a Time with a whole number of seconds" # NoMethodError: undefined method `subsec' for 1970-01-01 01:01:40 +0100
+  fails "Time#to_date yields accurate julian date for Julian-Gregorian gap value" # Expected 2299170 == 2299160 to be truthy but was false
+  fails "Time#to_date yields accurate julian date for ambiguous pre-Gregorian reform value" # Expected 2299160 == 2299150 to be truthy but was false
+  fails "Time#to_date yields accurate julian date for post-Gregorian reform value" # Expected 2299171 == 2299161 to be truthy but was false
+  fails "Time#to_date yields same julian day regardless of UTC time value" # Expected 2299171 == 2299161 to be truthy but was false
+  fails "Time#to_date yields same julian day regardless of local time or zone" # Expected 2299171 == 2299161 to be truthy but was false
+  fails "Time#to_f returns the float number of seconds + usecs since the epoch"
+  fails "Time#to_i rounds fractional seconds toward zero" # Expected -315619200 == -315619199 to be truthy but was false
+  fails "Time#tv_sec rounds fractional seconds toward zero" # Expected -315619200 == -315619199 to be truthy but was false
+  fails "Time#usec returns a positive value for dates before the epoch" # Expected 0 to equal 404240
+  fails "Time#utc converts self to UTC, modifying the receiver" # Expected 2007-01-09 03:00:00 UTC to equal 2007-01-09 12:00:00 UTC
+  fails "Time#zone Encoding.default_internal is set returns an ASCII string"
+  fails "Time#zone defaults to UTC when bad zones given" # Expected 3600 to equal 0
+  fails "Time.at :in keyword argument could be UTC offset as a String in '+HH:MM or '-HH:MM' format" # TypeError: no implicit conversion of Hash into Integer
+  fails "Time.at :in keyword argument could be UTC offset as a number of seconds" # TypeError: no implicit conversion of Hash into Integer
+  fails "Time.at :in keyword argument could be a timezone object" # TypeError: no implicit conversion of Hash into Integer
+  fails "Time.at passed Numeric passed BigDecimal doesn't round input value"
+  fails "Time.at passed Numeric passed Rational returns Time with correct microseconds" # Expected 0 == 539759 to be truthy but was false
+  fails "Time.at passed Numeric passed Rational returns Time with correct nanoseconds" # Expected 0 == 539759 to be truthy but was false
+  fails "Time.at passed Numeric roundtrips a Rational produced by #to_r"
+  fails "Time.at passed [Time, Numeric, format] :microsecond format treats second argument as microseconds" # ArgumentError: [Time.at] wrong number of arguments(3 for -2)
+  fails "Time.at passed [Time, Numeric, format] :millisecond format treats second argument as milliseconds" # ArgumentError: [Time.at] wrong number of arguments(3 for -2)
+  fails "Time.at passed [Time, Numeric, format] :nanosecond format treats second argument as nanoseconds" # ArgumentError: [Time.at] wrong number of arguments(3 for -2)
+  fails "Time.at passed [Time, Numeric, format] :nsec format treats second argument as nanoseconds" # ArgumentError: [Time.at] wrong number of arguments(3 for -2)
+  fails "Time.at passed [Time, Numeric, format] :usec format treats second argument as microseconds" # ArgumentError: [Time.at] wrong number of arguments(3 for -2)
+  fails "Time.at passed [Time, Numeric, format] supports Float second argument" # ArgumentError: [Time.at] wrong number of arguments(3 for -2)
+  fails "Time.at passed non-Time, non-Numeric with an argument that responds to #to_r needs for the argument to respond to #to_int too" # Mock 'rational-but-no-to_int' expected to receive to_r("any_args") exactly 1 times but received it 0 times
+  fails "Time.gm handles fractional usec close to rounding limit" # NoMethodError: undefined method `nsec' for 2000-01-01 12:30:00 UTC:Time
+  fails "Time.gm raises an ArgumentError for out of range microsecond" # Expected ArgumentError but no exception was raised (2000-01-01 20:15:01 UTC was returned)
+  fails "Time.httpdate parses RFC-2616 strings" # NoMethodError: undefined method `httpdate' for Time
+  fails "Time.local raises an ArgumentError for out of range microsecond" # Expected ArgumentError but no exception was raised (2000-01-01 20:15:01 +0200 was returned)
+  fails "Time.mktime raises an ArgumentError for out of range microsecond" # Expected ArgumentError but no exception was raised (2000-01-01 20:15:01 +0200 was returned)
+  fails "Time.new has at least microsecond precision" # NoMethodError: undefined method `nsec' for 2019-05-16 23:25:01 +0200
+  fails "Time.new uses the local timezone" # Expected 10800 to equal -28800
+  fails "Time.new with a timezone argument #name method cannot marshal Time if #name method isn't implemented" # ArgumentError: Opal does not support explicitly specifying UTC offset for Time
+  fails "Time.new with a timezone argument #name method uses the optional #name method for marshaling" # ArgumentError: Opal does not support explicitly specifying UTC offset for Time
+  fails "Time.new with a timezone argument Time-like argument of #utc_to_local and #local_to_utc methods has attribute values the same as a Time object in UTC" # ArgumentError: Opal does not support explicitly specifying UTC offset for Time
+  fails "Time.new with a timezone argument Time-like argument of #utc_to_local and #local_to_utc methods implements subset of Time methods" # ArgumentError: Opal does not support explicitly specifying UTC offset for Time
+  fails "Time.new with a timezone argument accepts timezone argument that must have #local_to_utc and #utc_to_local methods" # Expected to not get Exception but got: ArgumentError (Opal doesn't support other types for a timezone argument than Integer and String)
+  fails "Time.new with a timezone argument does not raise exception if timezone does not implement #utc_to_local method" # Expected to not get Exception but got: ArgumentError (Opal doesn't support other types for a timezone argument than Integer and String)
+  fails "Time.new with a timezone argument raises TypeError if timezone does not implement #local_to_utc method" # Expected TypeError (/can't convert \w+ into an exact number/) but got: ArgumentError (Opal does not support explicitly specifying UTC offset for Time)
+  fails "Time.new with a timezone argument returned value by #utc_to_local and #local_to_utc methods could be Time instance" # Expected to not get Exception but got: ArgumentError (Opal doesn't support other types for a timezone argument than Integer and String)
+  fails "Time.new with a timezone argument returned value by #utc_to_local and #local_to_utc methods could be Time subclass instance" # Expected to not get Exception but got: ArgumentError (Opal doesn't support other types for a timezone argument than Integer and String)
+  fails "Time.new with a timezone argument returned value by #utc_to_local and #local_to_utc methods could be any object with #to_i method" # Expected to not get Exception but got: ArgumentError (Opal doesn't support other types for a timezone argument than Integer and String)
+  fails "Time.new with a timezone argument returned value by #utc_to_local and #local_to_utc methods could have any #zone and #utc_offset because they are ignored" # ArgumentError: Opal does not support explicitly specifying UTC offset for Time
+  fails "Time.new with a timezone argument returned value by #utc_to_local and #local_to_utc methods leads to raising Argument error if difference between argument and result is too large" # Expected ArgumentError (utc_offset out of range) but got: ArgumentError (Opal does not support explicitly specifying UTC offset for Time)
+  fails "Time.new with a timezone argument returns a Time in the timezone" # ArgumentError: Opal does not support explicitly specifying UTC offset for Time
+  fails "Time.new with a timezone argument subject's class implements .find_timezone method calls .find_timezone to build a time object at loading marshaled data" # ArgumentError: Opal does not support explicitly specifying UTC offset for Time
+  fails "Time.new with a timezone argument subject's class implements .find_timezone method calls .find_timezone to build a time object if passed zone name as a timezone argument" # ArgumentError: Opal does not support explicitly specifying UTC offset for Time
+  fails "Time.new with a timezone argument subject's class implements .find_timezone method does not call .find_timezone if passed any not string/numeric/timezone timezone argument" # Expected TypeError (/can't convert \w+ into an exact number/) but got: ArgumentError (Opal does not support explicitly specifying UTC offset for Time)
+  fails "Time.new with a timezone argument the #abbr method is used by '%Z' in #strftime" # ArgumentError: Opal does not support explicitly specifying UTC offset for Time
+  fails "Time.new with a utc_offset argument raises ArgumentError if the String argument is not in an ASCII-compatible encoding" # Expected ArgumentError but no exception was raised (1999-12-31 18:50:00 -0410.000000000000028 was returned)
+  fails "Time.new with a utc_offset argument raises ArgumentError if the month is greater than 12" # Expected ArgumentError (/(mon|argument) out of range/) but got: ArgumentError (Opal does not support explicitly specifying UTC offset for Time)
+  fails "Time.new with a utc_offset argument raises ArgumentError if the utc_offset argument is greater than or equal to 10e9" # Expected ArgumentError but no exception was raised (2031-09-09 00:46:40 +27777746.66666666418314 was returned)
+  fails "Time.new with a utc_offset argument returns a Time with a UTC offset specified as +HH:MM:SS" # ArgumentError: Opal does not support explicitly specifying UTC offset for Time
+  fails "Time.now has at least microsecond precision" # NoMethodError: undefined method `nsec' for 2019-05-16 23:25:03 +0200
+  fails "Time.now uses the local timezone" # Expected 10800 to equal -28800
+  fails "Time.rfc2822 parses RFC-2822 strings" # NoMethodError: undefined method `rfc2822' for Time
+  fails "Time.rfc2822 parses RFC-822 strings" # NoMethodError: undefined method `rfc2822' for Time
+  fails "Time.rfc822 parses RFC-2822 strings" # NoMethodError: undefined method `rfc2822' for Time
+  fails "Time.rfc822 parses RFC-822 strings" # NoMethodError: undefined method `rfc2822' for Time
+  fails "Time.utc handles fractional usec close to rounding limit" # NoMethodError: undefined method `nsec' for 2000-01-01 12:30:00 UTC:Time
+  fails "Time.utc raises an ArgumentError for out of range microsecond" # Expected ArgumentError but no exception was raised (2000-01-01 20:15:01 UTC was returned)
+  fails "Time.xmlschema parses ISO-8601 strings" # NoMethodError: undefined method `xmlschema' for Time
+end
diff --git a/spec/filters/bugs/trace_point.rb b/spec/filters/bugs/trace_point.rb
new file mode 100644
index 00000000..535d4d90
--- /dev/null
+++ b/spec/filters/bugs/trace_point.rb
@@ -0,0 +1,12 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "TracePoint" do
+  fails "TracePoint#inspect returns a String showing the event and thread for :thread_begin event" # RuntimeError: Only the :class event is supported
+  fails "TracePoint#inspect returns a String showing the event and thread for :thread_end event" # RuntimeError: Only the :class event is supported
+  fails "TracePoint#inspect returns a String showing the event, method, path and line for a :c_call event" # RuntimeError: Only the :class event is supported
+  fails "TracePoint#inspect returns a String showing the event, method, path and line for a :call event" # RuntimeError: Only the :class event is supported
+  fails "TracePoint#inspect returns a String showing the event, method, path and line for a :return event" # RuntimeError: Only the :class event is supported
+  fails "TracePoint#inspect returns a String showing the event, path and line for a :class event"
+  fails "TracePoint#inspect returns a String showing the event, path and line"
+  fails "TracePoint#inspect returns a string containing a human-readable TracePoint status"
+  fails "TracePoint#self return the trace object from event"
+end
diff --git a/spec/filters/bugs/unboundmethod.rb b/spec/filters/bugs/unboundmethod.rb
new file mode 100644
index 00000000..4fe17a4e
--- /dev/null
+++ b/spec/filters/bugs/unboundmethod.rb
@@ -0,0 +1,25 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "UnboundMethod" do
+  fails "UnboundMethod#== returns true if both are aliases for a third method"
+  fails "UnboundMethod#== returns true if either is an alias for the other"
+  fails "UnboundMethod#== returns true if objects refer to the same method"
+  fails "UnboundMethod#== returns true if same method is extracted from the same subclass"
+  fails "UnboundMethod#arity for a Method generated by respond_to_missing? returns -1"
+  fails "UnboundMethod#bind the returned Method is equal to the one directly returned by obj.method" # Expected #<Method: UnboundMethodSpecs::Methods#foo (defined in UnboundMethodSpecs::Methods in ruby/core/unboundmethod/fixtures/classes.rb:30)> to equal #<Method: UnboundMethodSpecs::Methods#foo (defined in UnboundMethodSpecs::Methods in ruby/core/unboundmethod/fixtures/classes.rb:30)>
+  fails "UnboundMethod#clone returns a copy of the UnboundMethod"
+  fails "UnboundMethod#hash returns the same value for builtin methods that are eql?"
+  fails "UnboundMethod#hash returns the same value for user methods that are eql?"
+  fails "UnboundMethod#inspect returns a String including all details" # Expected "#<UnboundMethod: UnboundMethodSpecs::Methods#from_mod (defined in UnboundMethodSpecs::Mod in ruby/core/unboundmethod/fixtures/classes.rb:24)>".start_with? "#<UnboundMethod: UnboundMethodSpecs::Methods(UnboundMethodSpecs::Mod)#from_mod" to be truthy but was false
+  fails "UnboundMethod#original_name returns the name of the method" # NoMethodError: undefined method `original_name' for #<UnboundMethod: String#upcase (defined in String in corelib/string.rb:1672)>
+  fails "UnboundMethod#original_name returns the original name even when aliased twice" # NoMethodError: undefined method `original_name' for #<UnboundMethod: UnboundMethodSpecs::Methods#foo (defined in UnboundMethodSpecs::Methods in ruby/core/unboundmethod/fixtures/classes.rb:30)>
+  fails "UnboundMethod#original_name returns the original name" # NoMethodError: undefined method `original_name' for #<UnboundMethod: UnboundMethodSpecs::Methods#foo (defined in UnboundMethodSpecs::Methods in ruby/core/unboundmethod/fixtures/classes.rb:30)>
+  fails "UnboundMethod#source_location sets the first value to the path of the file in which the method was defined" # Expected "ruby/core/unboundmethod/fixtures/classes.rb" to equal "./ruby/core/unboundmethod/fixtures/classes.rb"
+  fails "UnboundMethod#source_location works for define_method methods"
+  fails "UnboundMethod#source_location works for define_singleton_method methods"
+  fails "UnboundMethod#super_method returns nil when the parent's method is removed"
+  fails "UnboundMethod#super_method returns nil when there's no super method in the parent"
+  fails "UnboundMethod#super_method returns the method that would be called by super in the method"
+  fails "UnboundMethod#to_s does not show the defining module if it is the same as the origin" # Expected "#<UnboundMethod:0x10e>".start_with? "#<UnboundMethod: UnboundMethodSpecs::A#baz" to be truthy but was false
+  fails "UnboundMethod#to_s returns a String including all details" # Expected "#<UnboundMethod:0x14c>".start_with? "#<UnboundMethod: UnboundMethodSpecs::Methods(UnboundMethodSpecs::Mod)#from_mod" to be truthy but was false
+  fails "UnboundMethod#to_s the String shows the method name, Module defined in and Module extracted from"
+end
diff --git a/spec/filters/bugs/warnings.rb b/spec/filters/bugs/warnings.rb
new file mode 100644
index 00000000..98c020e9
--- /dev/null
+++ b/spec/filters/bugs/warnings.rb
@@ -0,0 +1,20 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "warnings" do
+  fails "Array#join when $, is not nil warns" # Expected warning to match: /warning: \$, is set to non-nil value/ but got: ""
+  fails "Constant resolution within methods with dynamically assigned constants returns the updated value when a constant is reassigned" # Expected warning to match: /already initialized constant/
+  fails "Fixnum is deprecated" # Expected warning to match: /constant ::Fixnum is deprecated/ but got: ""
+  fails "Hash#fetch gives precedence to the default block over the default argument when passed both" # Expected warning to match: /block supersedes default value argument/
+  fails "Integer#** bignum switch to a Float when the values is too big" # Expected warning to match: /warning: in a\*\*b, b may be too big/ but got: ""
+  fails "Integer#** fixnum returns Float::INFINITY when the number is too big" # Expected warning to match: /warning: in a\*\*b, b may be too big/ but got: ""
+  fails "Integer#pow one argument is passed fixnum returns Float::INFINITY when the number is too big" # Expected warning to match: /warning: in a\*\*b, b may be too big/ but got: ""
+  fails "Kernel#=~ is deprecated" # Expected warning to match: /deprecated Object#=~ is called on Object/ but got: ""
+  fails "Literal (A::X) constant resolution with dynamically assigned constants returns the updated value when a constant is reassigned" # Expected warning to match: /already initialized constant/
+  fails "Literal Regexps matches against $_ (last input) in a conditional if no explicit matchee provided" # Expected warning to match: /regex literal in condition/
+  fails "Module#const_get with dynamically assigned constants returns the updated value of a constant" # Expected warning to match: /already initialized constant/
+  fails "Pattern matching warning when one-line form does not warn about pattern matching is experimental feature" # NameError: uninitialized constant Warning
+  fails "Predefined global $, warns if assigned non-nil" # Expected warning to match: /warning: `\$,' is deprecated/ but got: ""
+  fails "Predefined global $; warns if assigned non-nil" # Expected warning to match: /warning: `\$;' is deprecated/ but got: ""
+  fails "Regexp.new given a Regexp does not honour options given as additional arguments" # Expected warning to match: /flags ignored/
+  fails "Struct.new overwrites previously defined constants with string as first argument" # Expected warning to match: /redefining constant/
+  fails "The for expression allows a constant as an iterator name" # Expected warning to match: /already initialized constant/
+end
diff --git a/spec/filters/unsupported/array.rb b/spec/filters/unsupported/array.rb
new file mode 100644
index 00000000..d7928fd9
--- /dev/null
+++ b/spec/filters/unsupported/array.rb
@@ -0,0 +1,168 @@
+# NOTE: run bin/format-filters after changing this file
+opal_unsupported_filter "Array" do
+  fails "Array#* with a string with a tainted separator does not taint the result if the array has only one element"
+  fails "Array#* with a string with a tainted separator does not taint the result if the array is empty"
+  fails "Array#* with a string with a tainted separator taints the result if the array has two or more elements"
+  fails "Array#* with a string with an untrusted separator does not untrust the result if the array has only one element"
+  fails "Array#* with a string with an untrusted separator does not untrust the result if the array is empty"
+  fails "Array#* with a string with an untrusted separator untrusts the result if the array has two or more elements"
+  fails "Array#* with an integer copies the taint status of the original array even if the array is empty"
+  fails "Array#* with an integer copies the taint status of the original array even if the passed count is 0"
+  fails "Array#* with an integer copies the taint status of the original array if the passed count is not 0"
+  fails "Array#* with an integer copies the untrusted status of the original array even if the array is empty"
+  fails "Array#* with an integer copies the untrusted status of the original array even if the passed count is 0"
+  fails "Array#* with an integer copies the untrusted status of the original array if the passed count is not 0"
+  fails "Array#+ does not get infected even if an original array is tainted"
+  fails "Array#+ does not infected even if an original array is untrusted"
+  fails "Array#<< raises a RuntimeError on a frozen array"
+  fails "Array#[] raises a RangeError when the length is out of range of Fixnum"
+  fails "Array#[] raises a RangeError when the start index is out of range of Fixnum"
+  fails "Array#[]= checks frozen before attempting to coerce arguments"
+  fails "Array#[]= raises a RuntimeError on a frozen array"
+  fails "Array#clear keeps tainted status"
+  fails "Array#clear keeps untrusted status"
+  fails "Array#clear raises a RuntimeError on a frozen array"
+  fails "Array#clone copies frozen status from the original"
+  fails "Array#clone copies taint status from the original"
+  fails "Array#clone copies untrusted status from the original"
+  fails "Array#collect does not copy tainted status"
+  fails "Array#collect does not copy untrusted status"
+  fails "Array#collect! keeps tainted status"
+  fails "Array#collect! keeps untrusted status"
+  fails "Array#collect! when frozen raises a RuntimeError when calling #each on the returned Enumerator when empty"
+  fails "Array#collect! when frozen raises a RuntimeError when calling #each on the returned Enumerator"
+  fails "Array#collect! when frozen raises a RuntimeError when empty"
+  fails "Array#collect! when frozen raises a RuntimeError"
+  fails "Array#compact does not keep tainted status even if all elements are removed"
+  fails "Array#compact does not keep untrusted status even if all elements are removed"
+  fails "Array#compact! keeps tainted status even if all elements are removed"
+  fails "Array#compact! keeps untrusted status even if all elements are removed"
+  fails "Array#compact! raises a RuntimeError on a frozen array"
+  fails "Array#concat is not infected by the other"
+  fails "Array#concat is not infected untrustedness by the other"
+  fails "Array#concat keeps tainted status"
+  fails "Array#concat keeps the tainted status of elements"
+  fails "Array#concat keeps the untrusted status of elements"
+  fails "Array#concat keeps untrusted status"
+  fails "Array#concat raises a RuntimeError when Array is frozen and modification occurs"
+  fails "Array#concat raises a RuntimeError when Array is frozen and no modification occurs"
+  fails "Array#delete keeps tainted status"
+  fails "Array#delete keeps untrusted status"
+  fails "Array#delete raises a RuntimeError on a frozen array"
+  fails "Array#delete_at keeps tainted status"
+  fails "Array#delete_at keeps untrusted status"
+  fails "Array#delete_at raises a RuntimeError on a frozen array"
+  fails "Array#delete_if keeps tainted status"
+  fails "Array#delete_if keeps untrusted status"
+  fails "Array#delete_if raises a RuntimeError on a frozen array"
+  fails "Array#delete_if raises a RuntimeError on an empty frozen array"
+  fails "Array#delete_if returns an Enumerator if no block given, and the array is frozen"
+  fails "Array#dup copies taint status from the original"
+  fails "Array#dup copies untrusted status from the original"
+  fails "Array#eql? returns false if any corresponding elements are not #eql?"
+  fails "Array#fill does not replicate the filler"
+  fails "Array#fill raises a RuntimeError on a frozen array"
+  fails "Array#fill raises a RuntimeError on an empty frozen array"
+  fails "Array#fill with (filler, index, length) raises an ArgumentError or RangeError for too-large sizes"
+  fails "Array#first raises a RangeError when count is a Bignum"
+  fails "Array#flatten returns a tainted array if self is tainted"
+  fails "Array#flatten returns an untrusted array if self is untrusted"
+  fails "Array#flatten! raises a RuntimeError on frozen arrays when the array is modified"
+  fails "Array#flatten! raises a RuntimeError on frozen arrays when the array would not be modified"
+  fails "Array#frozen? returns false for an array being sorted by #sort"
+  fails "Array#frozen? returns true if array is frozen"
+  fails "Array#hash calls to_int on result of calling hash on each element"
+  fails "Array#hash returns the same fixnum for arrays with the same content"
+  fails "Array#initialize is private"
+  fails "Array#initialize raises a RuntimeError on frozen arrays"
+  fails "Array#insert raises a RuntimeError on frozen arrays when the array is modified"
+  fails "Array#insert raises a RuntimeError on frozen arrays when the array would not be modified"
+  fails "Array#inspect does not taint the result if the Array is tainted but empty"
+  fails "Array#inspect does not untrust the result if the Array is untrusted but empty"
+  fails "Array#inspect represents a recursive element with '[...]'"
+  fails "Array#inspect taints the result if an element is tainted"
+  fails "Array#inspect taints the result if the Array is non-empty and tainted"
+  fails "Array#inspect untrusts the result if an element is untrusted"
+  fails "Array#inspect untrusts the result if the Array is untrusted"
+  fails "Array#inspect with encoding does not raise if inspected result is not default external encoding" # NoMethodError: undefined method `encode!' for "\"utf_16be あ\"":String
+  fails "Array#inspect with encoding raises if inspected result is not default external encoding"
+  fails "Array#inspect with encoding returns a US-ASCII string for an empty Array"
+  fails "Array#inspect with encoding use US-ASCII encoding if the default external encoding is not ascii compatible"
+  fails "Array#inspect with encoding use the default external encoding if it is ascii compatible"
+  fails "Array#join does not taint the result if the Array is tainted but empty"
+  fails "Array#join does not untrust the result if the Array is untrusted but empty"
+  fails "Array#join fails for arrays with incompatibly-encoded strings"
+  fails "Array#join returns a US-ASCII string for an empty Array"
+  fails "Array#join taints the result if the Array is tainted and non-empty"
+  fails "Array#join taints the result if the result of coercing an element is tainted"
+  fails "Array#join untrusts the result if the Array is untrusted and non-empty"
+  fails "Array#join untrusts the result if the result of coercing an element is untrusted"
+  fails "Array#join uses the first encoding when other strings are compatible"
+  fails "Array#join uses the widest common encoding when other strings are incompatible"
+  fails "Array#join with a tainted separator does not taint the result if the array has only one element"
+  fails "Array#join with a tainted separator does not taint the result if the array is empty"
+  fails "Array#join with a tainted separator taints the result if the array has two or more elements"
+  fails "Array#join with an untrusted separator does not untrust the result if the array has only one element"
+  fails "Array#join with an untrusted separator does not untrust the result if the array is empty"
+  fails "Array#join with an untrusted separator untrusts the result if the array has two or more elements"
+  fails "Array#keep_if on frozen objects returns an Enumerator if no block is given"
+  fails "Array#keep_if on frozen objects with falsy block keeps elements after any exception"
+  fails "Array#keep_if on frozen objects with falsy block raises a RuntimeError"
+  fails "Array#keep_if on frozen objects with truthy block keeps elements after any exception"
+  fails "Array#keep_if on frozen objects with truthy block raises a RuntimeError"
+  fails "Array#map does not copy tainted status"
+  fails "Array#map does not copy untrusted status"
+  fails "Array#map! keeps tainted status"
+  fails "Array#map! keeps untrusted status"
+  fails "Array#map! when frozen raises a RuntimeError when calling #each on the returned Enumerator when empty"
+  fails "Array#map! when frozen raises a RuntimeError when calling #each on the returned Enumerator"
+  fails "Array#map! when frozen raises a RuntimeError when empty"
+  fails "Array#map! when frozen raises a RuntimeError"
+  fails "Array#pop keeps taint status"
+  fails "Array#pop keeps untrusted status"
+  fails "Array#pop passed a number n as an argument keeps taint status"
+  fails "Array#pop passed a number n as an argument keeps untrusted status"
+  fails "Array#pop passed a number n as an argument raises a RuntimeError on a frozen array"
+  fails "Array#pop passed a number n as an argument returns a trusted array even if the array is untrusted"
+  fails "Array#pop passed a number n as an argument returns an untainted array even if the array is tainted"
+  fails "Array#pop raises a RuntimeError on a frozen array"
+  fails "Array#pop raises a RuntimeError on an empty frozen array"
+  fails "Array#push raises a RuntimeError on a frozen array"
+  fails "Array#reject! raises a RuntimeError on a frozen array"
+  fails "Array#reject! raises a RuntimeError on an empty frozen array"
+  fails "Array#reject! returns an Enumerator if no block given, and the array is frozen"
+  fails "Array#replace raises a RuntimeError on a frozen array"
+  fails "Array#reverse! raises a RuntimeError on a frozen array"
+  fails "Array#select! on frozen objects with falsy block keeps elements after any exception"
+  fails "Array#select! on frozen objects with falsy block raises a RuntimeError"
+  fails "Array#select! on frozen objects with truthy block keeps elements after any exception"
+  fails "Array#select! on frozen objects with truthy block raises a RuntimeError"
+  fails "Array#shift passed a number n as an argument keeps taint status"
+  fails "Array#shift passed a number n as an argument returns an untainted array even if the array is tainted"
+  fails "Array#shift raises a RuntimeError on a frozen array"
+  fails "Array#shift raises a RuntimeError on an empty frozen array"
+  fails "Array#shuffle! raises a RuntimeError on a frozen array"
+  fails "Array#slice raises a RangeError when the length is out of range of Fixnum"
+  fails "Array#slice raises a RangeError when the start index is out of range of Fixnum"
+  fails "Array#slice! raises a RuntimeError on a frozen array"
+  fails "Array#sort! raises a RuntimeError on a frozen array"
+  fails "Array#to_s does not taint the result if the Array is tainted but empty"
+  fails "Array#to_s does not untrust the result if the Array is untrusted but empty"
+  fails "Array#to_s represents a recursive element with '[...]'"
+  fails "Array#to_s taints the result if an element is tainted"
+  fails "Array#to_s taints the result if the Array is non-empty and tainted"
+  fails "Array#to_s untrusts the result if an element is untrusted"
+  fails "Array#to_s untrusts the result if the Array is untrusted"
+  fails "Array#to_s with encoding does not raise if inspected result is not default external encoding" # NoMethodError: undefined method `encode!' for "\"utf_16be あ\"":String
+  fails "Array#to_s with encoding raises if inspected result is not default external encoding"
+  fails "Array#to_s with encoding returns a US-ASCII string for an empty Array"
+  fails "Array#to_s with encoding use US-ASCII encoding if the default external encoding is not ascii compatible"
+  fails "Array#to_s with encoding use the default external encoding if it is ascii compatible"
+  fails "Array#uniq compares elements with matching hash codes with #eql?" #RubySpec uses taint, which is not supported on Opal.
+  fails "Array#uniq uses eql? semantics" #RubySpec expects 1.0 and 1 to be seen as different, which is not supported on Opal.
+  fails "Array#uniq! doesn't yield to the block on a frozen array"
+  fails "Array#uniq! raises a RuntimeError on a frozen array when the array is modified"
+  fails "Array#uniq! raises a RuntimeError on a frozen array when the array would not be modified"
+  fails "Array#unshift raises a RuntimeError on a frozen array when the array is modified"
+  fails "Array#unshift raises a RuntimeError on a frozen array when the array would not be modified"
+end
diff --git a/spec/filters/unsupported/basicobject.rb b/spec/filters/unsupported/basicobject.rb
new file mode 100644
index 00000000..c7f0b90f
--- /dev/null
+++ b/spec/filters/unsupported/basicobject.rb
@@ -0,0 +1,15 @@
+# NOTE: run bin/format-filters after changing this file
+opal_unsupported_filter "BasicObject" do
+  fails "BasicObject#method_missing for a Class raises a NoMethodError when a private method is called"
+  fails "BasicObject#method_missing for a Class raises a NoMethodError when a protected method is called"
+  fails "BasicObject#method_missing for a Class with #method_missing defined is called when an private method is called"
+  fails "BasicObject#method_missing for a Class with #method_missing defined is called when an protected method is called"
+  fails "BasicObject#method_missing for a Module raises a NoMethodError when a private method is called"
+  fails "BasicObject#method_missing for a Module raises a NoMethodError when a protected method is called"
+  fails "BasicObject#method_missing for a Module with #method_missing defined is called when a private method is called"
+  fails "BasicObject#method_missing for a Module with #method_missing defined is called when a protected method is called"
+  fails "BasicObject#method_missing for an instance raises a NoMethodError when a private method is called"
+  fails "BasicObject#method_missing for an instance raises a NoMethodError when a protected method is called"
+  fails "BasicObject#method_missing for an instance with #method_missing defined is called when an private method is called"
+  fails "BasicObject#method_missing for an instance with #method_missing defined is called when an protected method is called"
+end
diff --git a/spec/filters/unsupported/bignum.rb b/spec/filters/unsupported/bignum.rb
new file mode 100644
index 00000000..13633e29
--- /dev/null
+++ b/spec/filters/unsupported/bignum.rb
@@ -0,0 +1,55 @@
+# NOTE: run bin/format-filters after changing this file
+opal_unsupported_filter "Bignum" do
+  fails "BasicObject#__id__ returns a different value for two Bignum literals"
+  fails "Complex#== with Numeric returns true when self's imaginary part is 0 and the real part and other have numerical equality"
+  fails "Complex#fdiv with an imaginary part sets the real part to self's real part fdiv'd with the argument"
+  fails "Complex#fdiv with no imaginary part sets the real part to self's real part fdiv'd with the argument"
+  fails "Complex#rect raises an ArgumentError if given any arguments"
+  fails "Complex#rect returns a two-element Array"
+  fails "Complex#rect returns an Array"
+  fails "Complex#rect returns the imaginary part of self as the last element"
+  fails "Complex#rect returns the real part of self as the first element"
+  fails "Enumerable#first raises a RangeError when passed a Bignum"
+  fails "Fixnum#& returns self bitwise AND a Bignum"
+  fails "Fixnum#& returns self bitwise AND other"
+  fails "Fixnum#* overflows to Bignum when the result does not fit in Fixnum"
+  fails "Fixnum#** can raise -1 to a Bignum safely"
+  fails "Fixnum#/ coerces fixnum and return self divided by other"
+  fails "Fixnum#^ returns self bitwise EXCLUSIVE OR a Bignum"
+  fails "Fixnum#^ returns self bitwise EXCLUSIVE OR other"
+  fails "Fixnum#| returns self bitwise OR other"
+  fails "Float#fdiv performs floating-point division between self and a Bignum"
+  fails "Float#numerator converts self to a Rational object then returns its numerator"
+  fails "Float#quo performs floating-point division between self and a Bignum"
+  fails "Float#round returns rounded values for big values"
+  fails "Integer#gcd accepts a Bignum argument"
+  fails "Integer#gcd works if self is a Bignum"
+  fails "Integer#gcdlcm accepts a Bignum argument"
+  fails "Integer#gcdlcm works if self is a Bignum"
+  fails "Integer#lcm accepts a Bignum argument"
+  fails "Integer#lcm works if self is a Bignum"
+  fails "Integer#odd? returns true when self is an odd number"
+  fails "Integer#rationalize returns a Rational object"
+  fails "Integer#rationalize uses 1 as the denominator"
+  fails "Integer#rationalize uses self as the numerator"
+  fails "Integer#round returns itself rounded if passed a negative value"
+  fails "Integer#to_r works even if self is a Bignum"
+  fails "Marshal.dump with a Bignum dumps a Bignum"
+  fails "Marshal.load for a Integer loads an Integer -2361183241434822606847"
+  fails "Marshal.load for a Integer loads an Integer 2361183241434822606847"
+  fails "Marshal.load loads a Bignum 2**90"
+  fails "Numeric#denominator returns 1"
+  fails "Numeric#numerator converts self to a Rational object then returns its numerator"
+  fails "Numeric#quo raises a ZeroDivisionError when the given Integer is 0"
+  fails "Random#rand with Bignum typically returns a Bignum"
+  fails "Random.new uses a random seed value if none is supplied"
+  fails "Random.new_seed returns a Bignum"
+  fails "Rational#** when passed Bignum raises ZeroDivisionError when self is Rational(0) and the exponent is negative"
+  fails "Rational#** when passed Bignum returns 0.0 when self is < -1 and the exponent is negative"
+  fails "Rational#** when passed Bignum returns 0.0 when self is > 1 and the exponent is negative"
+  fails "Rational#** when passed Bignum returns Rational(-1) when self is Rational(-1) and the exponent is positive and odd"
+  fails "Rational#** when passed Bignum returns Rational(1) when self is Rational(-1) and the exponent is positive and even"
+  fails "Rational#** when passed Bignum returns positive Infinity when self < -1"
+  fails "Rational#** when passed Bignum returns positive Infinity when self is > 1"
+  fails "Rational#round with a precision > 0 doesn't fail when rounding to an absurdly large positive precision"
+end
diff --git a/spec/filters/unsupported/class.rb b/spec/filters/unsupported/class.rb
new file mode 100644
index 00000000..f568abdf
--- /dev/null
+++ b/spec/filters/unsupported/class.rb
@@ -0,0 +1,5 @@
+# NOTE: run bin/format-filters after changing this file
+opal_unsupported_filter "Class" do
+  fails "Class#initialize is private"
+  fails "Class.inherited is called when marked as a public class method"
+end
diff --git a/spec/filters/unsupported/delegator.rb b/spec/filters/unsupported/delegator.rb
new file mode 100644
index 00000000..909cb45b
--- /dev/null
+++ b/spec/filters/unsupported/delegator.rb
@@ -0,0 +1,6 @@
+# NOTE: run bin/format-filters after changing this file
+opal_unsupported_filter "Delegator" do
+  fails "SimpleDelegator.new doesn't forward private method calls even via send or __send__"
+  fails "SimpleDelegator.new doesn't forward private method calls"
+  fails "SimpleDelegator.new forwards protected method calls"
+end
diff --git a/spec/filters/unsupported/enumerable.rb b/spec/filters/unsupported/enumerable.rb
new file mode 100644
index 00000000..48e763d0
--- /dev/null
+++ b/spec/filters/unsupported/enumerable.rb
@@ -0,0 +1,12 @@
+# NOTE: run bin/format-filters after changing this file
+opal_unsupported_filter "Enumerable" do
+  fails "Enumerable#chunk does not return elements for which the block returns :_separator"
+  fails "Enumerable#chunk raises a RuntimeError if the block returns a Symbol starting with an underscore other than :_alone or :_separator"
+  fails "Enumerable#chunk with [initial_state] yields an element and an object value-equal but not identical to the object passed to #chunk"
+  fails "Enumerable#entries returns a tainted array if self is tainted"
+  fails "Enumerable#entries returns an untrusted array if self is untrusted"
+  fails "Enumerable#group_by returns a tainted hash if self is tainted"
+  fails "Enumerable#group_by returns an untrusted hash if self is untrusted"
+  fails "Enumerable#to_a returns a tainted array if self is tainted"
+  fails "Enumerable#to_a returns an untrusted array if self is untrusted"
+end
diff --git a/spec/filters/unsupported/enumerator.rb b/spec/filters/unsupported/enumerator.rb
new file mode 100644
index 00000000..c87acec0
--- /dev/null
+++ b/spec/filters/unsupported/enumerator.rb
@@ -0,0 +1,14 @@
+# NOTE: run bin/format-filters after changing this file
+opal_unsupported_filter "Enumerator" do
+  fails "Enumerator#next cannot be called again until the enumerator is rewound"
+  fails "Enumerator#next raises a StopIteration exception at the end of the stream"
+  fails "Enumerator#next returns the next element of the enumeration"
+  fails "Enumerator#rewind calls the enclosed object's rewind method if one exists"
+  fails "Enumerator#rewind clears a pending #feed value"
+  fails "Enumerator#rewind does nothing if the object doesn't have a #rewind method"
+  fails "Enumerator#rewind has no effect if called multiple, consecutive times"
+  fails "Enumerator#rewind has no effect on a new enumerator"
+  fails "Enumerator#rewind resets the enumerator to its initial state"
+  fails "Enumerator#rewind returns self"
+  fails "Enumerator#rewind works with peek to reset the position"
+end
diff --git a/spec/filters/unsupported/file.rb b/spec/filters/unsupported/file.rb
new file mode 100644
index 00000000..92eeb566
--- /dev/null
+++ b/spec/filters/unsupported/file.rb
@@ -0,0 +1,4 @@
+# NOTE: run bin/format-filters after changing this file
+opal_unsupported_filter "File" do
+  fails "File.join doesn't mutate the object when calling #to_str"
+end
diff --git a/spec/filters/unsupported/fixnum.rb b/spec/filters/unsupported/fixnum.rb
new file mode 100644
index 00000000..97a5302c
--- /dev/null
+++ b/spec/filters/unsupported/fixnum.rb
@@ -0,0 +1,15 @@
+# NOTE: run bin/format-filters after changing this file
+opal_unsupported_filter "Fixnum" do
+  fails "Fixnum#+ overflows to Bignum when the result does not fit in Fixnum"
+  fails "Fixnum#- returns a Bignum only if the result is too large to be a Fixnum"
+  fails "Fixnum#<< with n << m returns -1 when n < 0, m < 0 and n > -(2**-m)"
+  fails "Fixnum#<< with n << m returns 0 when m < 0 and m is a Bignum"
+  fails "Fixnum#<< with n << m returns 0 when n > 0, m < 0 and n < 2**-m"
+  fails "Fixnum#<< with n << m returns a Bignum == fixnum_max * 2 when fixnum_max << 1 and n > 0"
+  fails "Fixnum#<< with n << m returns a Bignum == fixnum_min * 2 when fixnum_min << 1 and n < 0"
+  fails "Fixnum#>> with n >> m returns -1 when n < 0, m > 0 and n > -(2**m)"
+  fails "Fixnum#>> with n >> m returns 0 when m is a Bignum"
+  fails "Fixnum#>> with n >> m returns 0 when n > 0, m > 0 and n < 2**m"
+  fails "Fixnum#>> with n >> m returns a Bignum == fixnum_max * 2 when fixnum_max >> -1 and n > 0"
+  fails "Fixnum#>> with n >> m returns a Bignum == fixnum_min * 2 when fixnum_min >> -1 and n < 0"
+end
diff --git a/spec/filters/unsupported/float.rb b/spec/filters/unsupported/float.rb
new file mode 100644
index 00000000..73bd6ed7
--- /dev/null
+++ b/spec/filters/unsupported/float.rb
@@ -0,0 +1,50 @@
+# NOTE: run bin/format-filters after changing this file
+opal_unsupported_filter "Float" do
+  fails "BasicObject#__id__ returns a different value for two Float literals"
+  fails "Complex#/ with Fixnum raises a ZeroDivisionError when given zero"
+  fails "Complex#eql? returns false when the imaginary parts are of different classes"
+  fails "Complex#eql? returns false when the real parts are of different classes"
+  fails "Complex#quo with Fixnum raises a ZeroDivisionError when given zero"
+  fails "Complex#rationalize raises RangeError if self has 0.0 imaginary part"
+  fails "Complex#to_f when the imaginary part is Float 0.0 raises RangeError"
+  fails "Complex#to_i when the imaginary part is Float 0.0 raises RangeError"
+  fails "Complex#to_r when the imaginary part is Float 0.0 raises RangeError"
+  fails "Complex#to_s returns 1+0.0i for Complex(1, 0.0)"
+  fails "Complex#to_s returns 1-0.0i for Complex(1, -0.0)"
+  fails "Fixnum#% raises a ZeroDivisionError when the given argument is 0 and a Float"
+  fails "Fixnum#% raises a ZeroDivisionError when the given argument is 0"
+  fails "Fixnum#& raises a TypeError when passed a Float"
+  fails "Fixnum#/ raises a ZeroDivisionError if the given argument is zero and not a Float"
+  fails "Fixnum#/ returns self divided by the given argument"
+  fails "Fixnum#/ supports dividing negative numbers"
+  fails "Fixnum#^ raises a TypeError when passed a Float"
+  fails "Fixnum#coerce when given a String returns  an array containing two Floats"
+  fails "Fixnum#div coerces self and the given argument to Floats and returns self divided by other as Fixnum"
+  fails "Fixnum#divmod raises a TypeError when given a non-Integer"
+  fails "Fixnum#| raises a TypeError when passed a Float"
+  fails "Float constant MAX_10_EXP is 308"
+  fails "Float constant MAX_EXP is 1024"
+  fails "Float constant MIN is 2.2250738585072e-308"
+  fails "Float constant MIN_10_EXP is -308"
+  fails "Float constant MIN_EXP is -1021"
+  fails "Float#<=> returns -1 when self is -Infinity and other is negative" # Expected 0 == -1
+  fails "Float#<=> returns 1 when self is Infinity and other is an Integer" # Expected 0 == 1
+  fails "Float#<=> returns 1 when self is negative and other is -Infinity" # Expected 0 == 1
+  fails "Float#coerce returns [other, self] both as Floats"
+  fails "Float#eql? returns false if other is not a Float"
+  fails "Float#to_s emits '-' for -0.0"
+  fails "Float#to_s emits a trailing '.0' for a whole number"
+  fails "Float#to_s emits a trailing '.0' for the mantissa in e format"
+  fails "Float#to_s returns '0.0' for 0.0"
+  fails "Math.gamma returns approximately (n-1)! given n for n between 24 and 30" # precision error
+  fails "Numeric#step with keyword arguments when no block is given returned Enumerator size when self, stop or step is a Float and step is positive returns the difference between self and stop divided by the number of steps"
+  fails "Numeric#step with mixed arguments when no block is given returned Enumerator size when self, stop or step is a Float and step is positive returns the difference between self and stop divided by the number of steps"
+  fails "Numeric#step with positional args when no block is given returned Enumerator size when self, stop or step is a Float and step is positive returns the difference between self and stop divided by the number of steps"
+  fails "Rational#% returns a Float value when the argument is Float"
+  fails "Rational#** raises ZeroDivisionError for Rational(0, 1) passed a negative Integer"
+  fails "Rational#** when passed Integer returns the Rational value of self raised to the passed argument"
+  fails "Rational#/ when passed an Integer raises a ZeroDivisionError when passed 0"
+  fails "Rational#coerce returns the passed argument, self as Float, when given a Float"
+  fails "Rational#divmod when passed an Integer returns the quotient as Integer and the remainder as Rational"
+  fails "Struct#eql? returns false if any corresponding elements are not #eql?" # Rubyspec uses 1.eql?(1.0) which always returns true in compiled JS
+end
diff --git a/spec/filters/unsupported/freeze.rb b/spec/filters/unsupported/freeze.rb
new file mode 100644
index 00000000..b644a23d
--- /dev/null
+++ b/spec/filters/unsupported/freeze.rb
@@ -0,0 +1,286 @@
+# NOTE: run bin/format-filters after changing this file
+opal_unsupported_filter "freezing" do
+  fails "A method definition inside a metaclass scope raises FrozenError if frozen" # Expected FrozenError but no exception was raised ("foo" was returned)
+  fails "A method definition inside a metaclass scope raises RuntimeError if frozen"
+  fails "A singleton method definition raises FrozenError if frozen" # Expected FrozenError but no exception was raised ("foo" was returned)
+  fails "A singleton method definition raises RuntimeError if frozen"
+  fails "Array#<< raises a FrozenError on a frozen array" # Expected FrozenError but no exception was raised ([1, 2, 3, 5] was returned)
+  fails "Array#[]= raises a FrozenError on a frozen array" # Expected FrozenError but no exception was raised ([] was returned)
+  fails "Array#append raises a FrozenError on a frozen array" # NoMethodError: undefined method `append' for [1, 2, 3]:Array
+  fails "Array#clear raises a FrozenError on a frozen array" # Expected FrozenError but no exception was raised ([] was returned)
+  fails "Array#collect! when frozen raises a FrozenError when calling #each on the returned Enumerator when empty" # Expected FrozenError but no exception was raised ([] was returned)
+  fails "Array#collect! when frozen raises a FrozenError when calling #each on the returned Enumerator" # Expected FrozenError but no exception was raised ([1, 2, 3] was returned)
+  fails "Array#collect! when frozen raises a FrozenError when empty" # Expected FrozenError but no exception was raised ([] was returned)
+  fails "Array#collect! when frozen raises a FrozenError" # Expected FrozenError but no exception was raised ([nil, nil, nil] was returned)
+  fails "Array#compact! raises a FrozenError on a frozen array" # Expected FrozenError but no exception was raised (nil was returned)
+  fails "Array#concat raises a FrozenError when Array is frozen and modification occurs" # Expected FrozenError but no exception was raised ([1, 2, 3, 1] was returned)
+  fails "Array#concat raises a FrozenError when Array is frozen and no modification occurs" # Expected FrozenError but no exception was raised ([1, 2, 3] was returned)
+  fails "Array#delete raises a FrozenError on a frozen array" # Expected FrozenError but no exception was raised (1 was returned)
+  fails "Array#delete returns nil on a frozen array if a modification does not take place"
+  fails "Array#delete_at raises a FrozenError on a frozen array" # Expected FrozenError but no exception was raised (1 was returned)
+  fails "Array#delete_if raises a FrozenError on a frozen array" # Expected FrozenError but no exception was raised ([1, 2, 3] was returned)
+  fails "Array#delete_if raises a FrozenError on an empty frozen array" # Expected FrozenError but no exception was raised ([] was returned)
+  fails "Array#dup does not copy frozen status from the original"
+  fails "Array#fill raises a FrozenError on a frozen array" # Expected FrozenError but no exception was raised (["x", "x", "x"] was returned)
+  fails "Array#fill raises a FrozenError on an empty frozen array" # Expected FrozenError but no exception was raised ([] was returned)
+  fails "Array#filter! on frozen objects returns an Enumerator if no block is given" # NoMethodError: undefined method `filter!' for [true, false]
+  fails "Array#filter! on frozen objects with falsy block keeps elements after any exception" # Expected Exception but no exception was raised ([] was returned)
+  fails "Array#filter! on frozen objects with falsy block raises a FrozenError" # Expected FrozenError but got: NoMethodError (undefined method `filter!' for [true, false])
+  fails "Array#filter! on frozen objects with truthy block keeps elements after any exception" # Expected Exception but no exception was raised (nil was returned)
+  fails "Array#filter! on frozen objects with truthy block raises a FrozenError" # Expected FrozenError but got: NoMethodError (undefined method `filter!' for [true, false])
+  fails "Array#flatten! raises a FrozenError on frozen arrays when the array is modified" # Expected FrozenError but no exception was raised ([1, 2] was returned)
+  fails "Array#flatten! raises a FrozenError on frozen arrays when the array would not be modified" # Expected FrozenError but no exception was raised (nil was returned)
+  fails "Array#initialize raises a FrozenError on frozen arrays" # Expected FrozenError but no exception was raised ([] was returned)
+  fails "Array#insert raises a FrozenError on frozen arrays when the array is modified" # Expected FrozenError but no exception was raised (["x", 1, 2, 3] was returned)
+  fails "Array#insert raises a FrozenError on frozen arrays when the array would not be modified" # Expected FrozenError but no exception was raised ([1, 2, 3] was returned)
+  fails "Array#keep_if on frozen objects with falsy block raises a FrozenError" # Expected FrozenError but no exception was raised ([] was returned)
+  fails "Array#keep_if on frozen objects with truthy block raises a FrozenError" # Expected FrozenError but no exception was raised ([true, false] was returned)
+  fails "Array#map! when frozen raises a FrozenError when calling #each on the returned Enumerator when empty" # Expected FrozenError but no exception was raised ([] was returned)
+  fails "Array#map! when frozen raises a FrozenError when calling #each on the returned Enumerator" # Expected FrozenError but no exception was raised ([1, 2, 3] was returned)
+  fails "Array#map! when frozen raises a FrozenError when empty" # Expected FrozenError but no exception was raised ([] was returned)
+  fails "Array#map! when frozen raises a FrozenError" # Expected FrozenError but no exception was raised ([nil, nil, nil] was returned)
+  fails "Array#pop passed a number n as an argument raises a FrozenError on a frozen array" # Expected FrozenError but no exception was raised ([2, 3] was returned)
+  fails "Array#pop raises a FrozenError on a frozen array" # Expected FrozenError but no exception was raised (3 was returned)
+  fails "Array#pop raises a FrozenError on an empty frozen array" # Expected FrozenError but no exception was raised (nil was returned)
+  fails "Array#prepend raises a FrozenError on a frozen array when the array is modified" # NoMethodError: undefined method `prepend' for [1, 2, 3]:Array
+  fails "Array#prepend raises a FrozenError on a frozen array when the array would not be modified" # NoMethodError: undefined method `prepend' for [1, 2, 3]:Array
+  fails "Array#push raises a FrozenError on a frozen array" # Expected FrozenError but no exception was raised ([1, 2, 3, 1] was returned)
+  fails "Array#reject! raises a FrozenError on a frozen array" # Expected FrozenError but no exception was raised (nil was returned)
+  fails "Array#reject! raises a FrozenError on an empty frozen array" # Expected FrozenError but no exception was raised (nil was returned)
+  fails "Array#replace raises a FrozenError on a frozen array" # Expected FrozenError but no exception was raised ([1, 2, 3] was returned)
+  fails "Array#reverse! raises a FrozenError on a frozen array" # Expected FrozenError but no exception was raised ([3, 2, 1] was returned)
+  fails "Array#rotate does not mutate the receiver"
+  fails "Array#rotate! raises a FrozenError on a frozen array" # Expected FrozenError but no exception was raised ([1, 2, 3] was returned)
+  fails "Array#rotate! raises a RuntimeError on a frozen array"
+  fails "Array#select! on frozen objects returns an Enumerator if no block is given"
+  fails "Array#select! on frozen objects with falsy block raises a FrozenError" # Expected FrozenError but no exception was raised ([] was returned)
+  fails "Array#select! on frozen objects with truthy block raises a FrozenError" # Expected FrozenError but no exception was raised (nil was returned)
+  fails "Array#shift raises a FrozenError on a frozen array" # Expected FrozenError but no exception was raised (1 was returned)
+  fails "Array#shift raises a FrozenError on an empty frozen array" # Expected FrozenError but no exception was raised (nil was returned)
+  fails "Array#shuffle! raises a FrozenError on a frozen array" # Expected FrozenError but no exception was raised ([1, 2, 3] was returned)
+  fails "Array#slice! raises a FrozenError on a frozen array" # Expected FrozenError but no exception was raised ([] was returned)
+  fails "Array#sort does not freezes self during being sorted"
+  fails "Array#sort! raises a FrozenError on a frozen array" # Expected FrozenError but no exception was raised ([1, 2, 3] was returned)
+  fails "Array#sort_by! raises a FrozenError on a frozen array" # Expected FrozenError but no exception was raised ([1, 2, 3] was returned)
+  fails "Array#sort_by! raises a FrozenError on an empty frozen array" # Expected FrozenError but no exception was raised ([] was returned)
+  fails "Array#sort_by! raises a RuntimeError on a frozen array"
+  fails "Array#sort_by! raises a RuntimeError on an empty frozen array"
+  fails "Array#uniq! raises a FrozenError on a frozen array when the array is modified" # Expected FrozenError but no exception was raised ([1, 2] was returned)
+  fails "Array#uniq! raises a FrozenError on a frozen array when the array would not be modified" # Expected FrozenError but no exception was raised (nil was returned)
+  fails "Array#unshift raises a FrozenError on a frozen array when the array is modified" # Expected FrozenError but no exception was raised ([1, 1, 2, 3] was returned)
+  fails "Array#unshift raises a FrozenError on a frozen array when the array would not be modified" # Expected FrozenError but no exception was raised ([1, 2, 3] was returned)
+  fails "Date constants freezes MONTHNAMES, DAYNAMES, ABBR_MONTHNAMES, ABBR_DAYSNAMES"
+  fails "Enumerable#sort doesn't raise an error if #to_a returns a frozen Array"
+  fails "Enumerable#tally with a hash raises a FrozenError and does not update the given hash when the hash is frozen" # Expected FrozenError but got: ArgumentError ([Numerous#tally] wrong number of arguments(1 for 0))
+  fails "Enumerator#initialize on frozen instance raises a RuntimeError"
+  fails "Enumerator::Chain#initialize on frozen instance raises a RuntimeError" # Expected RuntimeError but no exception was raised (#<Enumerator::Chain: []> was returned)
+  fails "Enumerator::Generator#initialize on frozen instance raises a RuntimeError" # Expected RuntimeError but no exception was raised (#<Proc:0x1b314> was returned)
+  fails "Enumerator::Lazy#initialize on frozen instance raises a RuntimeError" # Expected RuntimeError but no exception was raised (nil was returned)
+  fails "FalseClass#to_s returns a frozen string" # Expected "false".frozen? to be truthy but was false
+  fails "File.basename returns a new unfrozen String" # Expected "foo.rb" not to be identical to "foo.rb"
+  fails "FrozenError#receiver should return frozen object that modification was attempted on" # RuntimeError: RuntimeError
+  fails "FrozenError.new should take optional receiver argument" # NoMethodError: undefined method `receiver' for #<FrozenError: msg>
+  fails "Hash literal does not change encoding of literal string keys during creation"
+  fails "Hash literal freezes string keys on initialization"
+  fails "Hash#== compares keys with matching hash codes via eql?"
+  fails "Hash#[]= doesn't duplicate and freeze already frozen string keys"
+  fails "Hash#[]= raises a FrozenError if called on a frozen instance" # Expected FrozenError but no exception was raised (2 was returned)
+  fails "Hash#clear raises a FrozenError if called on a frozen instance" # Expected FrozenError but no exception was raised ({} was returned)
+  fails "Hash#compact! on frozen instance keeps pairs and raises a FrozenError" # Expected FrozenError but no exception was raised ({"truthy"=>true, "false"=>false, nil=>true} was returned)
+  fails "Hash#compact! on frozen instance keeps pairs and raises a RuntimeError"
+  fails "Hash#compare_by_identity raises a FrozenError on frozen hashes" # Expected FrozenError but no exception was raised ({} was returned)
+  fails "Hash#default= raises a FrozenError if called on a frozen instance" # Expected FrozenError but no exception was raised (nil was returned)
+  fails "Hash#default_proc= raises a FrozenError if self is frozen" # Expected FrozenError but no exception was raised (main was returned)
+  fails "Hash#delete raises a FrozenError if called on a frozen instance" # Expected FrozenError but no exception was raised (nil was returned)
+  fails "Hash#delete_if raises a FrozenError if called on a frozen instance" # Expected FrozenError but no exception was raised ({1=>2, 3=>4} was returned)
+  fails "Hash#delete_if returns an Enumerator if called on a frozen instance"
+  fails "Hash#each returns an Enumerator if called on a frozen instance"
+  fails "Hash#each_key returns an Enumerator if called on a frozen instance"
+  fails "Hash#each_pair returns an Enumerator if called on a frozen instance"
+  fails "Hash#each_value returns an Enumerator if called on a frozen instance"
+  fails "Hash#eql? compares keys with matching hash codes via eql?"
+  fails "Hash#filter returns an Enumerator if called on a frozen instance" # NoMethodError: undefined method `filter' for {1=>2, 3=>4, 5=>6}
+  fails "Hash#filter! raises a FrozenError if called on a frozen instance that would not be modified" # Expected FrozenError but got: NoMethodError (undefined method `filter!' for {1=>2, 3=>4})
+  fails "Hash#filter! raises a FrozenError if called on an empty frozen instance" # Expected FrozenError but got: NoMethodError (undefined method `filter!' for {})
+  fails "Hash#filter! returns an Enumerator if called on a frozen instance" # NoMethodError: undefined method `filter!' for {1=>2, 3=>4, 5=>6}
+  fails "Hash#initialize raises a FrozenError if called on a frozen instance" # Expected FrozenError but no exception was raised ({1=>2, 3=>4} was returned)
+  fails "Hash#keep_if raises a FrozenError if called on a frozen instance" # Expected FrozenError but no exception was raised ({} was returned)
+  fails "Hash#keep_if returns an Enumerator if called on a frozen instance"
+  fails "Hash#merge! raises a FrozenError on a frozen instance that is modified" # Expected FrozenError but no exception was raised ({1=>2} was returned)
+  fails "Hash#merge! raises a FrozenError on a frozen instance that would not be modified" # Expected FrozenError but no exception was raised ({1=>2} was returned)
+  fails "Hash#rehash raises a FrozenError if called on a frozen instance" # Expected FrozenError but no exception was raised ({} was returned)
+  fails "Hash#reject returns an Enumerator if called on a frozen instance"
+  fails "Hash#reject! raises a FrozenError if called on a frozen instance that is modified" # Expected FrozenError but no exception was raised (nil was returned)
+  fails "Hash#reject! raises a FrozenError if called on a frozen instance that would not be modified" # Expected FrozenError but no exception was raised (nil was returned)
+  fails "Hash#replace raises a FrozenError if called on a frozen instance that is modified" # Expected FrozenError but no exception was raised ({} was returned)
+  fails "Hash#replace raises a FrozenError if called on a frozen instance that would not be modified" # Expected FrozenError but no exception was raised ({} was returned)
+  fails "Hash#select returns an Enumerator if called on a frozen instance"
+  fails "Hash#select! raises a FrozenError if called on a frozen instance that would not be modified" # Expected FrozenError but no exception was raised (nil was returned)
+  fails "Hash#select! raises a FrozenError if called on an empty frozen instance" # Expected FrozenError but no exception was raised (nil was returned)
+  fails "Hash#select! returns an Enumerator if called on a frozen instance"
+  fails "Hash#shift raises a FrozenError if called on a frozen instance" # Expected FrozenError but no exception was raised (nil was returned)
+  fails "Hash#store doesn't duplicate and freeze already frozen string keys"
+  fails "Hash#store raises a FrozenError if called on a frozen instance" # Expected FrozenError but no exception was raised (2 was returned)
+  fails "Hash#transform_keys! on frozen instance keeps pairs and raises a FrozenError" # NoMethodError: undefined method `transform_keys!' for {"a"=>1, "b"=>2, "c"=>3, "d"=>4}
+  fails "Hash#transform_keys! on frozen instance raises a FrozenError on an empty hash" # NoMethodError: undefined method `transform_keys!' for {}
+  fails "Hash#transform_values! on frozen instance keeps pairs and raises a FrozenError" # Expected FrozenError but no exception was raised ({"a"=>2, "b"=>3, "c"=>4} was returned)
+  fails "Hash#transform_values! on frozen instance keeps pairs and raises a RuntimeError"
+  fails "Hash#transform_values! on frozen instance raises a FrozenError on an empty hash" # Expected FrozenError but no exception was raised ({} was returned)
+  fails "Hash#transform_values! on frozen instance when no block is given does not raise an exception"
+  fails "Hash#update raises a FrozenError on a frozen instance that is modified" # Expected FrozenError but no exception was raised ({1=>2} was returned)
+  fails "Hash#update raises a FrozenError on a frozen instance that would not be modified" # Expected FrozenError but no exception was raised ({} was returned)
+  fails "Kernel#clone copies frozen state from the original"
+  fails "Kernel#clone copies frozen? and tainted?" # Expected false to be true
+  fails "Kernel#clone takes an freeze: true option to frozen copy" # Expected #<KernelSpecs::Duplicate:0x25158>.frozen? to be truthy but was false
+  fails "Kernel#clone takes an option to copy freeze state or not" # TODO: move to unsupported/freeze
+  fails "Kernel#clone with freeze: anything else raises ArgumentError when passed not true/false/nil" # Expected ArgumentError (/unexpected value for freeze: Integer/) but no exception was raised (#<KernelSpecs::Duplicate:0x22130 @one=1 @two="a"> was returned)
+  fails "Kernel#clone with freeze: false calls #initialize_clone with kwargs freeze: false even if #initialize_clone only takes a single argument" # Expected ArgumentError (wrong number of arguments (given 2, expected 1)) but no exception was raised (#<KernelSpecs::Clone:0x220b2> was returned)
+  fails "Kernel#clone with freeze: false calls #initialize_clone with kwargs freeze: false" # Expected [#<KernelSpecs::CloneFreeze:0x220d0>, {}] == [#<KernelSpecs::CloneFreeze:0x220d0>, {"freeze"=>false}] to be truthy but was false
+  fails "Kernel#clone with freeze: nil copies frozen state from the original, like #clone without arguments" # Expected #<KernelSpecs::Duplicate:0x21fd4 @one=1 @two="a">.frozen? to be truthy but was false
+  fails "Kernel#clone with freeze: nil copies frozen?" # ArgumentError: [String#clone] wrong number of arguments(1 for 0)
+  fails "Kernel#clone with freeze: true calls #initialize_clone with kwargs freeze: true even if #initialize_clone only takes a single argument" # Expected ArgumentError (wrong number of arguments (given 2, expected 1)) but no exception was raised (#<KernelSpecs::Clone:0x21ffa> was returned)
+  fails "Kernel#clone with freeze: true calls #initialize_clone with kwargs freeze: true" # Expected [#<KernelSpecs::CloneFreeze:0x22050>, {}] == [#<KernelSpecs::CloneFreeze:0x22050>, {"freeze"=>true}] to be truthy but was false
+  fails "Kernel#clone with freeze: true freezes the copy even if the original was not frozen" # Expected #<KernelSpecs::Duplicate:0x2200c @one=1 @two="a">.frozen? to be truthy but was false
+  fails "Kernel#clone with freeze: true makes a frozen copy if the original is frozen" # Expected #<KernelSpecs::Duplicate:0x2202e @one=1 @two="a">.frozen? to be truthy but was false
+  fails "Kernel#clone with no arguments copies frozen state from the original" # Expected #<KernelSpecs::Duplicate:0x21faa @one=1 @two="a">.frozen? to be truthy but was false
+  fails "Kernel#clone with no arguments copies frozen?" # Expected false to be true
+  fails "Kernel#extend on frozen instance raises a FrozenError" # Expected FrozenError but no exception was raised (main was returned)
+  fails "Kernel#extend on frozen instance raises a RuntimeError"
+  fails "Kernel#extend on frozen instance raises an ArgumentError when no arguments given"
+  fails "Kernel#freeze causes instance_variable_set to raise RuntimeError"
+  fails "Kernel#freeze causes mutative calls to raise RuntimeError"
+  fails "Kernel#freeze on a Complex has no effect since it is already frozen" # Expected false to be true
+  fails "Kernel#freeze on a Float has no effect since it is already frozen"
+  fails "Kernel#freeze on a Rational has no effect since it is already frozen" # Expected false to be true
+  fails "Kernel#freeze on a Symbol has no effect since it is already frozen"
+  fails "Kernel#freeze on integers has no effect since they are already frozen"
+  fails "Kernel#freeze on true, false and nil has no effect since they are already frozen"
+  fails "Kernel#freeze prevents self from being further modified"
+  fails "Kernel#freeze returns self"
+  fails "Kernel#frozen? on a Complex literal returns true" # Expected false to be true
+  fails "Kernel#frozen? on a Complex returns true" # Expected false to be true
+  fails "Kernel#frozen? on a Float returns true"
+  fails "Kernel#frozen? on a Rational literal returns true" # Expected false to be true
+  fails "Kernel#frozen? on a Rational returns true" # Expected false to be true
+  fails "Kernel#frozen? on a Symbol returns true"
+  fails "Kernel#frozen? on integers returns true"
+  fails "Kernel#frozen? on true, false and nil returns true"
+  fails "Kernel#frozen? returns true if self is frozen"
+  fails "Kernel#initialize_clone accepts a :freeze keyword argument for obj.clone(freeze: value)" # ArgumentError: [Object#initialize_clone] wrong number of arguments(2 for 1)
+  fails "Kernel#instance_variable_set on frozen objects keeps stored object after any exceptions"
+  fails "Kernel#instance_variable_set on frozen objects raises a FrozenError when passed replacement is different from stored object" # Expected FrozenError but no exception was raised ("replacement" was returned)
+  fails "Kernel#instance_variable_set on frozen objects raises a FrozenError when passed replacement is identical to stored object" # Expected FrozenError but no exception was raised ("origin" was returned)
+  fails "Kernel#instance_variable_set on frozen objects raises a RuntimeError when passed replacement is different from stored object"
+  fails "Kernel#instance_variable_set on frozen objects raises a RuntimeError when passed replacement is identical to stored object"
+  fails "Literal Ranges is frozen" # Expected 42...frozen? to be truthy but was false
+  fails "Literal Regexps is frozen" # Expected /Hello/.frozen? to be truthy but was false
+  fails "Marshal.load when called with freeze: true does not freeze classes" # ArgumentError: [Marshal.load] wrong number of arguments(2 for 1)
+  fails "Marshal.load when called with freeze: true does not freeze modules" # ArgumentError: [Marshal.load] wrong number of arguments(2 for 1)
+  fails "Marshal.load when called with freeze: true returns frozen arrays" # ArgumentError: [Marshal.load] wrong number of arguments(2 for 1)
+  fails "Marshal.load when called with freeze: true returns frozen hashes" # ArgumentError: [Marshal.load] wrong number of arguments(2 for 1)
+  fails "Marshal.load when called with freeze: true returns frozen objects" # ArgumentError: [Marshal.load] wrong number of arguments(2 for 1)
+  fails "Marshal.load when called with freeze: true returns frozen regexps" # ArgumentError: [Marshal.load] wrong number of arguments(2 for 1)
+  fails "Marshal.load when called with freeze: true returns frozen strings" # ArgumentError: [Marshal.load] wrong number of arguments(2 for 1)
+  fails "Marshal.load when called with freeze: true when called with a proc call the proc with frozen objects" # ArgumentError: [Marshal.load] wrong number of arguments(3 for 1)
+  fails "Marshal.load when called with freeze: true when called with a proc does not freeze the object returned by the proc" # ArgumentError: [Marshal.load] wrong number of arguments(3 for 1)
+  fails "MatchData#string returns a frozen copy of the match string"
+  fails "Module#alias_method raises FrozenError if frozen" # Expected FrozenError but no exception was raised (#<Class:0x39d44> was returned)
+  fails "Module#alias_method raises RuntimeError if frozen"
+  fails "Module#append_features when other is frozen raises a FrozenError before appending self" # Expected FrozenError but no exception was raised (#<Module:0x3fbfa> was returned)
+  fails "Module#append_features when other is frozen raises a RuntimeError before appending self"
+  fails "Module#autoload on a frozen module raises a FrozenError before setting the name" # Exception: Cannot read property '$pretty_inspect' of undefined
+  fails "Module#autoload on a frozen module raises a RuntimeError before setting the name"
+  fails "Module#class_variable_set raises a FrozenError when self is frozen" # Expected FrozenError but no exception was raised ("test" was returned)
+  fails "Module#class_variable_set raises a RuntimeError when self is frozen"
+  fails "Module#const_set on a frozen module raises a FrozenError before setting the name" # Expected FrozenError but no exception was raised (nil was returned)
+  fails "Module#const_set on a frozen module raises a RuntimeError before setting the name"
+  fails "Module#define_method raises a FrozenError if frozen" # Expected FrozenError but no exception was raised (#<Class:0x13e2> was returned)
+  fails "Module#define_method raises a RuntimeError if frozen"
+  fails "Module#extend_object when given a frozen object raises a RuntimeError before extending the object"
+  fails "Module#name returns a frozen String" # Expected "ModuleSpecs".frozen? to be truthy but was false
+  fails "Module#name returns a mutable string that when mutated does not modify the original module name" # NotImplementedError: String#<< not supported. Mutable String methods are not supported in Opal.
+  fails "Module#remove_method on frozen instance does not raise exceptions when no arguments given"
+  fails "Module#remove_method on frozen instance raises a FrozenError when passed a missing name" # NameError: method 'not_exist' not defined in
+  fails "Module#remove_method on frozen instance raises a FrozenError when passed a name" # NameError: method 'method_to_remove' not defined in
+  fails "Module#remove_method on frozen instance raises a RuntimeError when passed a missing name"
+  fails "Module#remove_method on frozen instance raises a RuntimeError when passed a name"
+  fails "Module#remove_method on frozen instance raises a TypeError when passed a not name"
+  fails "Module#undef_method on frozen instance does not raise exceptions when no arguments given"
+  fails "Module#undef_method on frozen instance raises a FrozenError when passed a missing name" # NameError: method 'not_exist' not defined in
+  fails "Module#undef_method on frozen instance raises a FrozenError when passed a name" # NameError: method 'method_to_undef' not defined in
+  fails "Module#undef_method on frozen instance raises a RuntimeError when passed a missing name"
+  fails "Module#undef_method on frozen instance raises a RuntimeError when passed a name"
+  fails "Module#undef_method on frozen instance raises a TypeError when passed a not name"
+  fails "NilClass#to_s returns a frozen string" # Expected "".frozen? to be truthy but was false
+  fails "OpenStruct#method_missing when called with a method name ending in '=' raises a TypeError when self is frozen"
+  fails "Proc#[] with frozen_string_literals doesn't duplicate frozen strings" # Expected false to be true
+  fails "Regexp#initialize raises a FrozenError on a Regexp literal" # Expected FrozenError but no exception was raised (nil was returned)
+  fails "Set#compare_by_identity raises a FrozenError on frozen sets" # NoMethodError: undefined method `compare_by_identity' for #<Set: {}>
+  fails "String#+@ returns an unfrozen copy of a frozen String"
+  fails "String#+@ returns self if the String is not frozen"
+  fails "String#-@ deduplicates frozen strings" # Expected "this string is frozen" not to be identical to "this string is frozen"
+  fails "String#-@ interns the provided string if it is frozen" # NoMethodError: undefined method `-@' for "this string is unique and frozen 0.5421131713191049"
+  fails "String#-@ returns a frozen copy if the String is not frozen"
+  fails "String#-@ returns self if the String is frozen"
+  fails "String#<< raises a FrozenError when self is frozen" # NotImplementedError: String#<< not supported. Mutable String methods are not supported in Opal.
+  fails "String#<< with Integer raises a FrozenError when self is frozen" # NotImplementedError: String#<< not supported. Mutable String methods are not supported in Opal.
+  fails "String#[]= with Fixnum index raises a FrozenError when self is frozen" # NoMethodError: undefined method `[]=' for "hello":String
+  fails "String#capitalize! raises a FrozenError when self is frozen" # NotImplementedError: String#capitalize! not supported. Mutable String methods are not supported in Opal.
+  fails "String#chomp! raises a FrozenError on a frozen instance when it is modified" # NotImplementedError: String#chomp! not supported. Mutable String methods are not supported in Opal.
+  fails "String#chomp! raises a FrozenError on a frozen instance when it would not be modified" # NotImplementedError: String#chomp! not supported. Mutable String methods are not supported in Opal.
+  fails "String#chop! raises a FrozenError on a frozen instance that is modified" # NotImplementedError: String#chop! not supported. Mutable String methods are not supported in Opal.
+  fails "String#chop! raises a FrozenError on a frozen instance that would not be modified" # NotImplementedError: String#chop! not supported. Mutable String methods are not supported in Opal.
+  fails "String#clear raises a FrozenError if self is frozen" # NoMethodError: undefined method `clear' for "Jolene":String
+  fails "String#clone copies frozen state"
+  fails "String#concat raises a FrozenError when self is frozen" # NoMethodError: undefined method `concat' for "hello":String
+  fails "String#concat with Integer raises a FrozenError when self is frozen" # NoMethodError: undefined method `concat' for "hello":String
+  fails "String#delete! raises a FrozenError when self is frozen" # NoMethodError: undefined method `delete!' for "hello":String
+  fails "String#delete_prefix! raises a FrozenError when self is frozen" # NoMethodError: undefined method `delete_prefix!' for "hello":String
+  fails "String#delete_suffix! raises a FrozenError when self is frozen" # NoMethodError: undefined method `delete_suffix!' for "hello":String
+  fails "String#downcase! raises a FrozenError when self is frozen" # NotImplementedError: String#downcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#encode! raises a FrozenError when called on a frozen String when it's a no-op" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! raises a FrozenError when called on a frozen String" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#force_encoding raises a FrozenError if self is frozen" # Expected FrozenError but no exception was raised ("abcd" was returned)
+  fails "String#freeze doesn't produce the same object for different instances of literals in the source"
+  fails "String#gsub! with pattern and block raises a FrozenError when self is frozen" # NotImplementedError: String#gsub! not supported. Mutable String methods are not supported in Opal.
+  fails "String#gsub! with pattern and replacement raises a FrozenError when self is frozen" # NotImplementedError: String#gsub! not supported. Mutable String methods are not supported in Opal.
+  fails "String#initialize with an argument raises a FrozenError on a frozen instance that is modified" # NotImplementedError: Mutable strings are not supported in Opal.
+  fails "String#initialize with an argument raises a FrozenError on a frozen instance when self-replacing" # NotImplementedError: Mutable strings are not supported in Opal.
+  fails "String#initialize with no arguments does not raise an exception when frozen"
+  fails "String#insert with index, other raises a FrozenError if self is frozen" # NoMethodError: undefined method `insert' for "abcd":String
+  fails "String#lstrip! raises a FrozenError on a frozen instance that is modified" # NotImplementedError: String#lstrip! not supported. Mutable String methods are not supported in Opal.
+  fails "String#lstrip! raises a FrozenError on a frozen instance that would not be modified" # NotImplementedError: String#lstrip! not supported. Mutable String methods are not supported in Opal.
+  fails "String#next! raises a FrozenError if self is frozen" # NotImplementedError: String#next! not supported. Mutable String methods are not supported in Opal.
+  fails "String#prepend raises a FrozenError when self is frozen" # NoMethodError: undefined method `prepend' for "hello":String
+  fails "String#replace raises a FrozenError on a frozen instance that is modified" # NoMethodError: undefined method `replace' for "hello":String
+  fails "String#replace raises a FrozenError on a frozen instance when self-replacing" # NoMethodError: undefined method `replace' for "hello":String
+  fails "String#reverse! raises a FrozenError on a frozen instance that is modified" # NotImplementedError: String#reverse! not supported. Mutable String methods are not supported in Opal.
+  fails "String#reverse! raises a FrozenError on a frozen instance that would not be modified" # NotImplementedError: String#reverse! not supported. Mutable String methods are not supported in Opal.
+  fails "String#rstrip! raises a FrozenError on a frozen instance that is modified" # NoMethodError: undefined method `rstrip!' for "  hello  ":String
+  fails "String#rstrip! raises a FrozenError on a frozen instance that would not be modified" # NoMethodError: undefined method `rstrip!' for "hello":String
+  fails "String#setbyte raises a FrozenError if self is frozen" # Expected false to be true
+  fails "String#slice! Range raises a FrozenError on a frozen instance that is modified" # NotImplementedError: String#slice! not supported. Mutable String methods are not supported in Opal.
+  fails "String#slice! Range raises a FrozenError on a frozen instance that would not be modified" # NotImplementedError: String#slice! not supported. Mutable String methods are not supported in Opal.
+  fails "String#slice! with Regexp raises a FrozenError on a frozen instance that is modified" # NotImplementedError: String#slice! not supported. Mutable String methods are not supported in Opal.
+  fails "String#slice! with Regexp raises a FrozenError on a frozen instance that would not be modified" # NotImplementedError: String#slice! not supported. Mutable String methods are not supported in Opal.
+  fails "String#slice! with Regexp, index raises a FrozenError if self is frozen" # NotImplementedError: String#slice! not supported. Mutable String methods are not supported in Opal.
+  fails "String#slice! with String raises a FrozenError if self is frozen" # NotImplementedError: String#slice! not supported. Mutable String methods are not supported in Opal.
+  fails "String#slice! with index raises a FrozenError if self is frozen" # NotImplementedError: String#slice! not supported. Mutable String methods are not supported in Opal.
+  fails "String#slice! with index, length raises a FrozenError if self is frozen" # NotImplementedError: String#slice! not supported. Mutable String methods are not supported in Opal.
+  fails "String#squeeze! raises a FrozenError when self is frozen" # NotImplementedError: String#squeeze! not supported. Mutable String methods are not supported in Opal.
+  fails "String#strip! raises a FrozenError on a frozen instance that is modified" # NotImplementedError: String#strip! not supported. Mutable String methods are not supported in Opal.
+  fails "String#strip! raises a FrozenError on a frozen instance that would not be modified" # NotImplementedError: String#strip! not supported. Mutable String methods are not supported in Opal.
+  fails "String#sub! with pattern and block raises a FrozenError when self is frozen" # NotImplementedError: String#sub! not supported. Mutable String methods are not supported in Opal.
+  fails "String#sub! with pattern, replacement raises a FrozenError when self is frozen" # NotImplementedError: String#sub! not supported. Mutable String methods are not supported in Opal.
+  fails "String#succ! raises a FrozenError if self is frozen" # NotImplementedError: String#succ! not supported. Mutable String methods are not supported in Opal.
+  fails "String#swapcase! raises a FrozenError when self is frozen" # NotImplementedError: String#swapcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#tr! raises a FrozenError if self is frozen" # NotImplementedError: String#tr! not supported. Mutable String methods are not supported in Opal.
+  fails "String#tr_s! raises a FrozenError if self is frozen" # NotImplementedError: String#tr_s! not supported. Mutable String methods are not supported in Opal.
+  fails "String#upcase! raises a FrozenError when self is frozen" # NotImplementedError: String#upcase! not supported. Mutable String methods are not supported in Opal.
+  fails "StringScanner#initialize returns an instance of StringScanner"
+  fails "Time#gmtime on a frozen time raises a RuntimeError if the time is not UTC"
+  fails "Time#localtime on a frozen time does not raise an error if already in the right time zone"
+  fails "Time#localtime on a frozen time raises a RuntimeError if the time has a different time zone"
+  fails "Time#utc on a frozen time raises a RuntimeError if the time is not UTC"
+  fails "TrueClass#to_s returns a frozen string" # Expected "true".frozen? to be truthy but was false
+end
diff --git a/spec/filters/unsupported/hash.rb b/spec/filters/unsupported/hash.rb
new file mode 100644
index 00000000..2f73ba87
--- /dev/null
+++ b/spec/filters/unsupported/hash.rb
@@ -0,0 +1,44 @@
+# NOTE: run bin/format-filters after changing this file
+opal_unsupported_filter "Hash" do
+  fails "Hash#[]= duplicates and freezes string keys"
+  fails "Hash#[]= duplicates string keys using dup semantics" # TypeError: can't define singleton
+  fails "Hash#[]= raises a RuntimeError if called on a frozen instance"
+  fails "Hash#assoc only returns the first matching key-value pair for identity hashes"
+  fails "Hash#clear raises a RuntimeError if called on a frozen instance"
+  fails "Hash#compare_by_identity raises a RuntimeError on frozen hashes"
+  fails "Hash#default= raises a RuntimeError if called on a frozen instance"
+  fails "Hash#default_proc= raises a RuntimeError if self is frozen"
+  fails "Hash#delete raises a RuntimeError if called on a frozen instance"
+  fails "Hash#delete_if raises a RuntimeError if called on a frozen instance"
+  fails "Hash#initialize is private"
+  fails "Hash#initialize raises a RuntimeError if called on a frozen instance"
+  fails "Hash#inspect does not raise if inspected result is not default external encoding" # Mock 'utf_16be' expected to receive 'inspect' exactly 1 times but received it 0 times
+  fails "Hash#inspect returns a tainted string if self is tainted and not empty"
+  fails "Hash#inspect returns an untrusted string if self is untrusted and not empty"
+  fails "Hash#keep_if raises a RuntimeError if called on a frozen instance"
+  fails "Hash#merge! checks frozen status before coercing an object with #to_hash"
+  fails "Hash#merge! raises a RuntimeError on a frozen instance that is modified"
+  fails "Hash#merge! raises a RuntimeError on a frozen instance that would not be modified"
+  fails "Hash#rehash raises a RuntimeError if called on a frozen instance"
+  fails "Hash#reject! raises a RuntimeError if called on a frozen instance that is modified"
+  fails "Hash#reject! raises a RuntimeError if called on a frozen instance that would not be modified"
+  fails "Hash#reject! returns an Enumerator if called on a frozen instance"
+  fails "Hash#replace raises a RuntimeError if called on a frozen instance that is modified"
+  fails "Hash#replace raises a RuntimeError if called on a frozen instance that would not be modified"
+  fails "Hash#select! raises a RuntimeError if called on a frozen instance that would not be modified"
+  fails "Hash#select! raises a RuntimeError if called on an empty frozen instance"
+  fails "Hash#shift raises a RuntimeError if called on a frozen instance"
+  fails "Hash#store duplicates and freezes string keys"
+  fails "Hash#store duplicates string keys using dup semantics" # TypeError: can't define singleton
+  fails "Hash#store raises a RuntimeError if called on a frozen instance"
+  fails "Hash#to_a returns a tainted array if self is tainted"
+  fails "Hash#to_a returns an untrusted array if self is untrusted"
+  fails "Hash#to_proc the returned proc passed as a block to instance_exec always retrieves the original hash's values"
+  fails "Hash#to_proc the returned proc raises ArgumentError if not passed exactly one argument"
+  fails "Hash#to_s does not raise if inspected result is not default external encoding" # Mock 'utf_16be' expected to receive 'inspect' exactly 1 times but received it 0 times
+  fails "Hash#to_s returns a tainted string if self is tainted and not empty"
+  fails "Hash#to_s returns an untrusted string if self is untrusted and not empty"
+  fails "Hash#update checks frozen status before coercing an object with #to_hash"
+  fails "Hash#update raises a RuntimeError on a frozen instance that is modified"
+  fails "Hash#update raises a RuntimeError on a frozen instance that would not be modified"
+end
diff --git a/spec/filters/unsupported/integer.rb b/spec/filters/unsupported/integer.rb
new file mode 100644
index 00000000..30ed184d
--- /dev/null
+++ b/spec/filters/unsupported/integer.rb
@@ -0,0 +1,105 @@
+# NOTE: run bin/format-filters after changing this file
+opal_unsupported_filter "Integer" do
+  fails "Integer#% bignum returns the modulus obtained from dividing self by the given argument" # Expected 0 to equal 9223372036854776000
+  fails "Integer#& bignum raises a TypeError when passed a Float" # Expected TypeError but no exception was raised (0 was returned)
+  fails "Integer#& bignum returns self bitwise AND other when both operands are negative" # Expected 0 to equal -13835058055282164000
+  fails "Integer#& bignum returns self bitwise AND other when one operand is negative" # Expected 0 to equal 18446744073709552000
+  fails "Integer#& bignum returns self bitwise AND other" # Expected 0 to equal 1
+  fails "Integer#& fixnum returns self bitwise AND a bignum" # Expected 0 to equal 18446744073709552000
+  fails "Integer#& fixnum returns self bitwise AND other" # Actually uses Bignums
+  fails "Integer#* bignum returns self multiplied by the given Integer" # Expected 8.507059173023462e+37 to equal 8.507059173023463e+37
+  fails "Integer#** fixnum can raise -1 to a bignum safely" # Expected 1 to have same value and type as -1
+  fails "Integer#- bignum returns self minus the given Integer" # Expected 0 to equal 272
+  fails "Integer#/ bignum raises a ZeroDivisionError if other is zero and not a Float" # Expected ZeroDivisionError but no exception was raised (Infinity was returned)
+  fails "Integer#/ bignum returns self divided by other" # Expected 10000000000 to equal 9999999999
+  fails "Integer#< bignum returns true if self is less than the given argument" # Expected false to equal true
+  fails "Integer#<< (with n << m) bignum calls #to_int to convert the argument to an Integer" # Expected 0 to equal 2.3611832414348226e+21
+  fails "Integer#<< (with n << m) bignum returns n shifted left m bits when n < 0, m > 0" # Expected 0 to equal -7.555786372591432e+22
+  fails "Integer#<< (with n << m) bignum returns n shifted left m bits when n > 0, m > 0" # Expected 0 to equal 2.3611832414348226e+21
+  fails "Integer#<< (with n << m) bignum returns n shifted right m bits when n < 0, m < 0" # Expected 0 to equal -36893488147419103000
+  fails "Integer#<< (with n << m) bignum returns n shifted right m bits when n > 0, m < 0" # Expected 0 to equal 73786976294838210000
+  fails "Integer#<< (with n << m) bignum returns n when n < 0, m == 0" # Expected 0 to equal -147573952589676410000
+  fails "Integer#<< (with n << m) bignum returns n when n > 0, m == 0" # Expected 0 to equal 147573952589676410000
+  fails "Integer#<< (with n << m) fixnum returns 0 when m < 0 and m is a Bignum" # Expected 3 to equal 0
+  fails "Integer#<< (with n << m) fixnum returns an Bignum == fixnum_max * 2 when fixnum_max << 1 and n > 0" # Expected 2147483646 (Number) to be an instance of Bignum
+  fails "Integer#<< (with n << m) fixnum returns an Bignum == fixnum_min * 2 when fixnum_min << 1 and n < 0" # Expected -2147483648 (Number) to be an instance of Bignum
+  fails "Integer#<= bignum returns false if compares with near float" # Expected true to equal false
+  fails "Integer#<=> bignum returns -1 when self is -Infinity and other is negative" # Expected 0 == -1
+  fails "Integer#<=> bignum returns 1 when self is Infinity and other is a Bignum" # Expected 0 == 1
+  fails "Integer#<=> bignum returns 1 when self is negative and other is -Infinity" # Expected 0 == 1
+  fails "Integer#<=> bignum with a Bignum when other is negative returns -1 when self is negative and other is larger" # Expected 0 to equal -1
+  fails "Integer#<=> bignum with a Bignum when other is negative returns 1 when self is negative and other is smaller" # Expected 0 to equal 1
+  fails "Integer#<=> bignum with a Bignum when other is positive returns -1 when self is positive and other is larger" # Expected 0 to equal -1
+  fails "Integer#<=> bignum with a Bignum when other is positive returns 1 when other is smaller" # Expected 0 to equal 1
+  fails "Integer#<=> bignum with an Object returns -1 if the coerced value is larger" # Expected 0 to equal -1
+  fails "Integer#<=> bignum with an Object returns nil if #coerce does not return an Array" # Expected 0 to be nil
+  fails "Integer#== bignum returns the result of 'other == self' as a boolean" # Expected "woot" to equal true
+  fails "Integer#== bignum returns true if self has the same value as the given argument" # Expected true to equal false
+  fails "Integer#=== bignum returns the result of 'other == self' as a boolean" # Expected "woot" to equal true
+  fails "Integer#=== bignum returns true if self has the same value as the given argument" # Expected true to equal false
+  fails "Integer#> bignum returns true if self is greater than the given argument" # Expected false to equal true
+  fails "Integer#>= bignum returns true if self is greater than or equal to other" # Expected true to equal false
+  fails "Integer#>> (with n >> m) bignum calls #to_int to convert the argument to an Integer" # Expected 0 to equal 36893488147419103000
+  fails "Integer#>> (with n >> m) bignum respects twos complement signed shifting for very large values" # Expected 0 to equal 2.2204460502842888e+66
+  fails "Integer#>> (with n >> m) bignum respects twos complement signed shifting" # Expected 101376 to equal -2621440001220703000
+  fails "Integer#>> (with n >> m) bignum returns n shifted left m bits when  n < 0, m < 0" # Expected 0 to equal -1.1805916207174113e+21
+  fails "Integer#>> (with n >> m) bignum returns n shifted left m bits when  n > 0, m < 0" # Expected 0 to equal 590295810358705700000
+  fails "Integer#>> (with n >> m) bignum returns n shifted right m bits when n < 0, m > 0" # Expected 0 to equal -36893488147419103000
+  fails "Integer#>> (with n >> m) bignum returns n shifted right m bits when n > 0, m > 0" # Expected 0 to equal 73786976294838210000
+  fails "Integer#>> (with n >> m) bignum returns n when n < 0, m == 0" # Expected 0 to equal -147573952589676410000
+  fails "Integer#>> (with n >> m) bignum returns n when n > 0, m == 0" # Expected 0 to equal 147573952589676410000
+  fails "Integer#>> (with n >> m) fixnum returns 0 when m is a bignum" # Expected 3 to equal 0
+  fails "Integer#>> (with n >> m) fixnum returns an Bignum == fixnum_max * 2 when fixnum_max >> -1 and n > 0" # NameError: uninitialized constant Bignum
+  fails "Integer#>> (with n >> m) fixnum returns an Bignum == fixnum_min * 2 when fixnum_min >> -1 and n < 0" # NameError: uninitialized constant Bignum
+  fails "Integer#[] bignum returns the nth bit in the binary representation of self" # Expected 0 to equal 1
+  fails "Integer#[] bignum tries to convert the given argument to an Integer using #to_int" # Expected 0 to equal 1
+  fails "Integer#^ bignum raises a TypeError when passed a Float" # Expected TypeError but no exception was raised (14 was returned)
+  fails "Integer#^ bignum returns self bitwise EXCLUSIVE OR other when all bits are 1 and other value is negative" # Expected -1 to equal -9.903520314283042e+27
+  fails "Integer#^ bignum returns self bitwise EXCLUSIVE OR other when both operands are negative" # Expected 0 to equal 64563604257983430000
+  fails "Integer#^ bignum returns self bitwise EXCLUSIVE OR other when one operand is negative" # Expected 0 to equal -64563604257983430000
+  fails "Integer#^ bignum returns self bitwise EXCLUSIVE OR other" # Expected 2 to equal 9223372036854776000
+  fails "Integer#^ fixnum returns self bitwise EXCLUSIVE OR a bignum" # Expected -1 to equal -18446744073709552000
+  fails "Integer#bit_length bignum returns the position of the leftmost 0 bit of a negative number" # NoMethodError: undefined method `bit_length` for -Infinity:Float
+  fails "Integer#bit_length bignum returns the position of the leftmost bit of a positive number" # Expected 1 to equal 1000
+  fails "Integer#coerce bignum coerces other to a Bignum and returns [other, self] when passed a Fixnum" # NameError: uninitialized constant Bignum
+  fails "Integer#coerce bignum raises a TypeError when not passed a Fixnum or Bignum" # ArgumentError: invalid value for Float(): "test"
+  fails "Integer#coerce bignum returns [other, self] when passed a Bignum" # NameError: uninitialized constant Bignum
+  fails "Integer#div bignum calls #coerce and #div if argument responds to #coerce" # Mock 'x' expected to receive div(main) exactly 1 times but received it 0 times
+  fails "Integer#div bignum looses precision if passed Float argument" # Expected 9223372036854776000 not to equal 9223372036854776000
+  fails "Integer#div bignum returns self divided by other" # Expected 10000000000 to equal 9999999999
+  fails "Integer#divmod bignum raises a TypeError when the given argument is not an Integer" # NoMethodError: undefined method `nan?' for main
+  fails "Integer#divmod bignum returns an Array containing quotient and modulus obtained from dividing self by the given argument" # Expected [2305843009213694000, 0] to equal [2305843009213694000, 3]
+  fails "Integer#divmod bignum with q = floor(x/y), a = q*b + r, returns [q,r] when a < 0, b < 0 and |a| < |b|" # Expected [1, 0] to equal [0, -9223372036854776000]
+  fails "Integer#divmod bignum with q = floor(x/y), a = q*b + r, returns [q,r] when a < 0, b > 0 and |a| < b" # Expected [-1, 0] to equal [-1, 1]
+  fails "Integer#divmod bignum with q = floor(x/y), a = q*b + r, returns [q,r] when a > 0, b < 0 and a < |b|" # Expected [-1, 0] to equal [-1, -1]
+  fails "Integer#divmod bignum with q = floor(x/y), a = q*b + r, returns [q,r] when a > 0, b < 0 and a > |b|" # Expected [-1, 0] to equal [-2, -9223372036854776000]
+  fails "Integer#even? fixnum returns true for a Bignum when it is an even number" # Expected true to be false
+  fails "Integer#even? returns true for a Bignum when it is an even number"
+  fails "Integer#modulo bignum returns the modulus obtained from dividing self by the given argument" # Expected 0 to equal 9223372036854776000
+  fails "Integer#odd? bignum returns false if self is even and negative" # Expected true to be false
+  fails "Integer#odd? bignum returns true if self is odd and positive" # Expected false to be true
+  fails "Integer#pow one argument is passed bignum raises a TypeError when given a non-Integer" # NoMethodError: undefined method `pow' for 9223372036854776000
+  fails "Integer#pow one argument is passed bignum returns a complex number when negative and raised to a fractional power" # NoMethodError: undefined method `pow' for -9223372036854776000
+  fails "Integer#pow one argument is passed bignum returns self raised to other power" # NoMethodError: undefined method `pow' for 9223372036854776000
+  fails "Integer#pow one argument is passed bignum switch to a Float when the values is too big" # NoMethodError: undefined method `pow' for 9223372036854776000
+  fails "Integer#pow one argument is passed fixnum can raise -1 to a bignum safely" # NoMethodError: undefined method `pow' for -1
+  fails "Integer#pow one argument is passed fixnum can raise 1 to a bignum safely" # NoMethodError: undefined method `pow' for 1
+  fails "Integer#pow one argument is passed fixnum overflows the answer to a bignum transparently" # NoMethodError: undefined method `pow' for 2
+  fails "Integer#pow one argument is passed fixnum returns Float::INFINITY for 0 ** -1.0" # Depends on the difference between Integer and Float
+  fails "Integer#pow two arguments are passed ensures all arguments are integers" # Depends on the difference between Integer and Float
+  fails "Integer#pow two arguments are passed works well with bignums" # NoMethodError: undefined method `pow' for 2
+  fails "Integer#remainder bignum does raises ZeroDivisionError if other is zero and a Float" # NoMethodError: undefined method `remainder' for 9223372036854776000
+  fails "Integer#remainder bignum raises a ZeroDivisionError if other is zero and not a Float" # NoMethodError: undefined method `remainder' for 9223372036854776000
+  fails "Integer#remainder bignum returns the remainder of dividing self by other" # NoMethodError: undefined method `remainder' for 9223372036854776000
+  fails "Integer#size bignum returns the number of bytes required to hold the unsigned bignum data" # Expected 4 to equal 8
+  fails "Integer#| bignum raises a TypeError when passed a Float" # Expected TypeError but no exception was raised (9 was returned)
+  fails "Integer#| bignum returns self bitwise OR other when both operands are negative" # Expected 0 to equal -1
+  fails "Integer#| bignum returns self bitwise OR other when one operand is negative" # Expected 0 to equal -64563604257983430000
+  fails "Integer#| bignum returns self bitwise OR other" # Expected 2 to equal 9223372036854776000
+  fails "Integer#~ bignum returns self with each bit flipped" # Expected -1 to equal -9223372036854776000
+  fails "Numeric#quo raises a ZeroDivisionError if the given argument is zero and not a Float" # Expected ZeroDivisionError but no exception was raised (Infinity was returned)
+  fails "String#to_r does not treat a leading period without a numeric prefix as a decimal point" # Expected (8106479329266893/9007199254740992) not to equal (8106479329266893/9007199254740992)
+  fails "String#to_r ignores underscores between numbers" # Expected (-5228919960423629/274877906944) to equal (-190227/10)
+  fails "String#to_r understands a forward slash as separating the numerator from the denominator" # Expected (-896028675862255/140737488355328) to equal (-191/30)
+  fails "String#to_r understands decimal points" # Expected (1874623344892969/562949953421312) to equal (333/100)
+end
diff --git a/spec/filters/unsupported/kernel.rb b/spec/filters/unsupported/kernel.rb
new file mode 100644
index 00000000..a62ce649
--- /dev/null
+++ b/spec/filters/unsupported/kernel.rb
@@ -0,0 +1,47 @@
+# NOTE: run bin/format-filters after changing this file
+opal_unsupported_filter "Kernel" do
+  fails "Kernel has private instance method Array()"
+  fails "Kernel has private instance method Hash()"
+  fails "Kernel#Float is a private method"
+  fails "Kernel#Float raises a TypeError if #to_f returns an Integer"
+  fails "Kernel#Integer calls to_i on Rationals"
+  fails "Kernel#Integer is a private method"
+  fails "Kernel#Integer returns a Fixnum or Bignum object"
+  fails "Kernel#String is a private method"
+  fails "Kernel#class returns the first non-singleton class" # TypeError: can't define singleton
+  fails "Kernel#clone preserves tainted state from the original"
+  fails "Kernel#clone preserves untrusted state from the original"
+  fails "Kernel#clone raises a TypeError for Symbol"
+  fails "Kernel#dup does not copy frozen state from the original"
+  fails "Kernel#dup preserves tainted state from the original"
+  fails "Kernel#dup preserves untrusted state from the original"
+  fails "Kernel#dup raises a TypeError for Symbol"
+  fails "Kernel#eql? is a public instance method"
+  fails "Kernel#fail is a private method"
+  fails "Kernel#format is a private method"
+  fails "Kernel#initialize_clone returns the receiver" # Expected nil == #<Object:0x63440> to be truthy but was false
+  fails "Kernel#initialize_dup returns the receiver" # Expected nil == #<Object:0x4c314> to be truthy but was false
+  fails "Kernel#inspect returns an untrusted string if self is untrusted"
+  fails "Kernel#raise is a private method"
+  fails "Kernel#sleep accepts a Rational"
+  fails "Kernel#sleep is a private method"
+  fails "Kernel#sleep pauses execution indefinitely if not given a duration"
+  fails "Kernel#sprintf is a private method"
+  fails "Kernel#to_s returns a tainted result if self is tainted"
+  fails "Kernel#to_s returns an untrusted result if self is untrusted"
+  fails "Kernel#warn calls Warning.warn with category: nil if Warning.warn accepts keyword arguments" # NameError: uninitialized constant Warning
+  fails "Kernel#warn calls Warning.warn with given category keyword converted to a symbol" # NameError: uninitialized constant Warning
+  fails "Kernel#warn calls Warning.warn without keyword arguments if Warning.warn does not accept keyword arguments" # NameError: uninitialized constant Warning
+  fails "Kernel#warn is a private method"
+  fails "Kernel.Float raises a TypeError if #to_f returns an Integer"
+  fails "Kernel.Integer calls to_i on Rationals"
+  fails "Kernel.Integer returns a Fixnum or Bignum object"
+  fails "Kernel.fail is a private method"
+  fails "Kernel.lambda when called without a literal block warns when proc isn't a lambda" # Expected warning: "ruby/core/kernel/lambda_spec.rb:142: warning: lambda without a literal block is deprecated; use the proc without lambda instead\n" but got: ""
+  fails "Kernel.printf formatting io is specified other formats s formats nil with width and precision" # Exception: format_string.indexOf is not a function
+  fails "Kernel.printf formatting io is specified other formats s formats nli with precision" # Exception: format_string.indexOf is not a function
+  fails "Kernel.printf formatting io is specified other formats s formats nli with width" # Exception: format_string.indexOf is not a function
+  fails "Kernel.printf formatting io is specified other formats s formats string with width and precision" # Exception: format_string.indexOf is not a function
+  fails "Kernel.printf formatting io is specified other formats s formats string with width" # Exception: format_string.indexOf is not a function
+  fails "Kernel.printf formatting io is specified other formats s substitutes '' for nil" # Exception: format_string.indexOf is not a function
+end
diff --git a/spec/filters/unsupported/language.rb b/spec/filters/unsupported/language.rb
new file mode 100644
index 00000000..6de4e6d5
--- /dev/null
+++ b/spec/filters/unsupported/language.rb
@@ -0,0 +1,25 @@
+# NOTE: run bin/format-filters after changing this file
+opal_unsupported_filter "language" do
+  fails "Magic comment can be after the shebang"
+  fails "Magic comment can take Emacs style"
+  fails "Magic comment can take vim style"
+  fails "Magic comment determines __ENCODING__"
+  fails "Magic comment is case-insensitive"
+  fails "Magic comment must be at the first line"
+  fails "Magic comment must be the first token of the line"
+  fails "Ruby String literals with a magic frozen comment produce different objects for literals with the same content in different files if the other file doesn't have the comment"
+  fails "Ruby String literals with a magic frozen comment produce different objects for literals with the same content in different files if they have different encodings"
+  fails "Ruby String literals with a magic frozen comment produce the same object each time"
+  fails "Ruby String literals with a magic frozen comment produce the same object for literals with the same content in different files"
+  fails "Ruby String literals with a magic frozen comment produce the same object for literals with the same content"
+  fails "The defined? keyword for pseudo-variables returns 'expression' for __ENCODING__"
+  fails "The defined? keyword when called with a method name having a module as receiver returns nil if the method is private"
+  fails "The defined? keyword when called with a method name having a module as receiver returns nil if the method is protected"
+  fails "The private keyword changes the visibility of the existing method in the subclass"
+  fails "The private keyword changes visibility of previously called method"
+  fails "The private keyword changes visibility of previously called methods with same send/call site" # Expected NoMethodError but no exception was raised (2 was returned)
+  fails "The private keyword is overridden when a new class is opened"
+  fails "The private keyword marks following methods as being private"
+  fails "rescuing Interrupt raises an Interrupt when sent a signal SIGINT" # NoMethodError: undefined method `kill' for Process
+  fails "rescuing SignalException raises a SignalException when sent a signal" # NoMethodError: undefined method `kill' for Process
+end
diff --git a/spec/filters/unsupported/marshal.rb b/spec/filters/unsupported/marshal.rb
new file mode 100644
index 00000000..0bb35915
--- /dev/null
+++ b/spec/filters/unsupported/marshal.rb
@@ -0,0 +1,44 @@
+# NOTE: run bin/format-filters after changing this file
+opal_unsupported_filter "Marshal" do
+  fails "Marshal.dump dumps subsequent appearances of a symbol as a link" # depends on Symbol-s
+  fails "Marshal.dump raises a TypeError if dumping a IO/File instance"
+  fails "Marshal.dump returns a tainted string if nested object is tainted"
+  fails "Marshal.dump returns a tainted string if object is tainted"
+  fails "Marshal.dump returns a trusted string if object is trusted"
+  fails "Marshal.dump returns an untainted string if object is untainted"
+  fails "Marshal.dump returns an untrusted string if nested object is untrusted"
+  fails "Marshal.dump returns an untrusted string if object is untrusted"
+  fails "Marshal.dump when passed an IO raises an Error when the IO-Object does not respond to #write"
+  fails "Marshal.dump when passed an IO returns the IO-Object"
+  fails "Marshal.dump when passed an IO writes the serialized data to the IO-Object"
+  fails "Marshal.dump with a Float dumps a Float" # depends on the string mutating, replaced with test in spec/opal
+  fails "Marshal.dump with a Regexp dumps a Regexp in another encoding"
+  fails "Marshal.dump with a Regexp dumps a Regexp with flags" # depends on string encoding, replaced with test in spec/opal
+  fails "Marshal.dump with a Regexp dumps a Regexp" # depends on utf-8 encoding which is not required, replaced with test in spec/opal
+  fails "Marshal.dump with a Regexp dumps a UTF-8 Regexp"
+  fails "Marshal.dump with a Regexp dumps a binary Regexp"
+  fails "Marshal.dump with a Regexp dumps an extended Regexp" # depends on string encoding, replaced with test in spec/opal
+  fails "Marshal.dump with a String dumps a String extended with a Module" # depends on string mutation
+  fails "Marshal.dump with a String dumps a String with instance variables"  # depends on string mutation
+  fails "Marshal.dump with an object responding to #marshal_dump dumps the object returned by #marshal_dump" # depends on Symbol-s, replaced with test in spec/opal
+  fails "Marshal.load for a Hash preserves hash ivars when hash contains a string having ivar" # depends on String#instance_variable_set
+  fails "Marshal.load for a String loads a string having ivar with ref to self" # depends on string mutation
+  fails "Marshal.load for a String loads a string through StringIO stream"
+  fails "Marshal.load for a String loads a string with an ivar" # depends on string mutation
+  fails "Marshal.load for a wrapped C pointer loads"
+  fails "Marshal.load for a wrapped C pointer raises ArgumentError when the local class is a regular object"
+  fails "Marshal.load for a wrapped C pointer raises TypeError when the local class is missing _load_data"
+  fails "Marshal.load for an Array loads an array having ivar" # for some reason depends on String#instance_variable_set which is not supported. replaced with test in spec/opal
+  fails "Marshal.load loads a Random" # depends on the reading from the filesystem
+  fails "Marshal.load preserves taintedness of nested structure"
+  fails "Marshal.load raises EOFError on loading an empty file"
+  fails "Marshal.load raises a TypeError with bad Marshal version" # depends on String#[]=
+  fails "Marshal.load returns a trusted object if source is trusted"
+  fails "Marshal.load returns an untainted object if source is untainted"
+  fails "Marshal.load returns an untrusted object if source is untrusted"
+  fails "Marshal.load when source is tainted does not taint Bignums"
+  fails "Marshal.load when source is tainted does not taint Fixnums"
+  fails "Marshal.load when source is tainted does not taint Floats"
+  fails "Marshal.load when source is tainted does not taint Symbols"
+  fails "Marshal.load when source is tainted returns a tainted object"
+end
diff --git a/spec/filters/unsupported/matchdata.rb b/spec/filters/unsupported/matchdata.rb
new file mode 100644
index 00000000..f40abe6a
--- /dev/null
+++ b/spec/filters/unsupported/matchdata.rb
@@ -0,0 +1,63 @@
+# NOTE: run bin/format-filters after changing this file
+opal_unsupported_filter "MatchData" do
+  fails "MatchData#[Symbol] raises an IndexError if there is no named match corresponding to the String"
+  fails "MatchData#[Symbol] raises an IndexError if there is no named match corresponding to the Symbol"
+  fails "MatchData#[Symbol] returns matches in the String's encoding"
+  fails "MatchData#[Symbol] returns nil on non-matching named matches"
+  fails "MatchData#[Symbol] returns the corresponding named match when given a String"
+  fails "MatchData#[Symbol] returns the corresponding named match when given a Symbol"
+  fails "MatchData#[Symbol] returns the last match when multiple named matches exist with the same name"
+  fails "MatchData#[Symbol] returns the matching version of multiple corresponding named match"
+  fails "MatchData#begin returns nil when the nth match isn't found"
+  fails "MatchData#begin returns the offset for multi byte strings with unicode regexp"
+  fails "MatchData#begin returns the offset for multi byte strings"
+  fails "MatchData#begin returns the offset of the start of the nth element"
+  fails "MatchData#begin when passed a String argument return the character offset of the start of the named capture" # Exception: named captures are not supported in javascript: "(?<a>.)(.)(?<b>\d+)(\d)"
+  fails "MatchData#begin when passed a String argument returns the character offset for multi byte strings" # Exception: named captures are not supported in javascript: "(?<a>.)(.)(?<b>\d+)(\d)"
+  fails "MatchData#begin when passed a String argument returns the character offset for multi-byte names" # Exception: named captures are not supported in javascript: "(?<æ>.)(.)(?<b>\d+)(\d)"
+  fails "MatchData#begin when passed a String argument returns the character offset for the farthest match when multiple named captures use the same name" # Exception: named captures are not supported in javascript: "(?<a>.)(.)(?<a>\d+)(\d)"
+  fails "MatchData#begin when passed a Symbol argument return the character offset of the start of the named capture" # Exception: named captures are not supported in javascript: "(?<a>.)(.)(?<b>\d+)(\d)"
+  fails "MatchData#begin when passed a Symbol argument returns the character offset for multi byte strings" # Exception: named captures are not supported in javascript: "(?<a>.)(.)(?<b>\d+)(\d)"
+  fails "MatchData#begin when passed a Symbol argument returns the character offset for multi-byte names" # Exception: named captures are not supported in javascript: "(?<æ>.)(.)(?<b>\d+)(\d)"
+  fails "MatchData#begin when passed a Symbol argument returns the character offset for the farthest match when multiple named captures use the same name" # Exception: named captures are not supported in javascript: "(?<a>.)(.)(?<a>\d+)(\d)"
+  fails "MatchData#begin when passed an integer argument returns nil when the nth match isn't found" # ArgumentError: MatchData#begin only supports 0th element
+  fails "MatchData#begin when passed an integer argument returns the character offset for multi-byte strings" # ArgumentError: MatchData#begin only supports 0th element
+  fails "MatchData#begin when passed an integer argument returns the character offset of the start of the nth element" # ArgumentError: MatchData#begin only supports 0th element
+  fails "MatchData#begin when passed an integer argument tries to convert the passed argument to an Integer using #to_int" # ArgumentError: MatchData#begin only supports 0th element
+  fails "MatchData#end returns nil when the nth match isn't found"
+  fails "MatchData#end returns the offset for multi byte strings with unicode regexp"
+  fails "MatchData#end returns the offset for multi byte strings"
+  fails "MatchData#end returns the offset of the end of the nth element"
+  fails "MatchData#end when passed a String argument return the character offset of the start of the named capture" # Exception: named captures are not supported in javascript: "(?<a>.)(.)(?<b>\d+)(\d)"
+  fails "MatchData#end when passed a String argument returns the character offset for multi byte strings" # Exception: named captures are not supported in javascript: "(?<a>.)(.)(?<b>\d+)(\d)"
+  fails "MatchData#end when passed a String argument returns the character offset for multi-byte names" # Exception: named captures are not supported in javascript: "(?<æ>.)(.)(?<b>\d+)(\d)"
+  fails "MatchData#end when passed a String argument returns the character offset for the farthest match when multiple named captures use the same name" # Exception: named captures are not supported in javascript: "(?<a>.)(.)(?<a>\d+)(\d)"
+  fails "MatchData#end when passed a Symbol argument return the character offset of the start of the named capture" # Exception: named captures are not supported in javascript: "(?<a>.)(.)(?<b>\d+)(\d)"
+  fails "MatchData#end when passed a Symbol argument returns the character offset for multi byte strings" # Exception: named captures are not supported in javascript: "(?<a>.)(.)(?<b>\d+)(\d)"
+  fails "MatchData#end when passed a Symbol argument returns the character offset for multi-byte names" # Exception: named captures are not supported in javascript: "(?<æ>.)(.)(?<b>\d+)(\d)"
+  fails "MatchData#end when passed a Symbol argument returns the character offset for the farthest match when multiple named captures use the same name" # Exception: named captures are not supported in javascript: "(?<a>.)(.)(?<a>\d+)(\d)"
+  fails "MatchData#end when passed an integer argument returns nil when the nth match isn't found" # ArgumentError: MatchData#end only supports 0th element
+  fails "MatchData#end when passed an integer argument returns the character offset for multi-byte strings" # ArgumentError: MatchData#end only supports 0th element
+  fails "MatchData#end when passed an integer argument returns the character offset of the end of the nth element" # ArgumentError: MatchData#end only supports 0th element
+  fails "MatchData#end when passed an integer argument tries to convert the passed argument to an Integer using #to_int" # ArgumentError: MatchData#end only supports 0th element
+  fails "MatchData#named_captures prefers later captures" # Exception: named captures are not supported in javascript: "^(?<a>.)(?<b>.)(?<b>.)(?<a>.)$"
+  fails "MatchData#named_captures returns a Hash that has captured name and the matched string pairs" # Exception: named captures are not supported in javascript: "(?<a>.)(?<b>.)?"
+  fails "MatchData#named_captures returns the latest matched capture, even if a later one that does not match exists" # Exception: named captures are not supported in javascript: "^(?<a>.)(?<b>.)(?<b>.)(?<a>.)?$"
+  fails "MatchData#names equals Regexp#names"
+  fails "MatchData#names returns [] if there were no named captures"
+  fails "MatchData#names returns an Array"
+  fails "MatchData#names returns each name only once"
+  fails "MatchData#names returns the names of the named capture groups"
+  fails "MatchData#names sets each element to a String"
+  fails "MatchData#offset returns [nil, nil] when the nth match isn't found"
+  fails "MatchData#offset returns a two element array with the begin and end of the nth match"
+  fails "MatchData#offset returns the offset for multi byte strings with unicode regexp"
+  fails "MatchData#offset returns the offset for multi byte strings"
+  fails "MatchData#post_match keeps taint status from the source string"
+  fails "MatchData#post_match keeps untrusted status from the source string"
+  fails "MatchData#pre_match keeps taint status from the source string"
+  fails "MatchData#pre_match keeps untrusted status from the source string"
+  fails "MatchData#regexp returns the pattern used in the match"
+  fails "MatchData#values_at slices captures with the given names" # Exception: named captures are not supported in javascript: "(?<a>.)(?<b>.)(?<c>.)"
+  fails "MatchData#values_at takes names and indices" # Exception: named captures are not supported in javascript: "^(?<a>.)(?<b>.)$"
+end
diff --git a/spec/filters/unsupported/math.rb b/spec/filters/unsupported/math.rb
new file mode 100644
index 00000000..21055b25
--- /dev/null
+++ b/spec/filters/unsupported/math.rb
@@ -0,0 +1,4 @@
+# NOTE: run bin/format-filters after changing this file
+opal_unsupported_filter "Math" do
+  fails "Math#atanh is a private instance method"
+end
diff --git a/spec/filters/unsupported/pathname.rb b/spec/filters/unsupported/pathname.rb
new file mode 100644
index 00000000..67bd2e3a
--- /dev/null
+++ b/spec/filters/unsupported/pathname.rb
@@ -0,0 +1,4 @@
+# NOTE: run bin/format-filters after changing this file
+opal_unsupported_filter "Pathname" do
+  fails "Pathname.new is tainted if path is tainted"
+end
diff --git a/spec/filters/unsupported/privacy.rb b/spec/filters/unsupported/privacy.rb
new file mode 100644
index 00000000..24c4b6b1
--- /dev/null
+++ b/spec/filters/unsupported/privacy.rb
@@ -0,0 +1,294 @@
+# NOTE: run bin/format-filters after changing this file
+opal_unsupported_filter "private" do
+  fails "A method definition always resets the visibility to public for nested definitions at the toplevel" # Expected NoMethodError (/private/) but no exception was raised ("nested_method_in_toplevel_method" was returned)
+  fails "A method definition always resets the visibility to public for nested definitions in Class.new" # Expected NoMethodError (/private/) but no exception was raised ("new_def" was returned)
+  fails "BasicObject#initialize is a private instance method"
+  fails "BasicObject#method_missing for a Class raises a NoMethodError when an undefined method is called"
+  fails "BasicObject#method_missing is a private method"
+  fails "BasicObject#singleton_method_added is a private method"
+  fails "BasicObject#singleton_method_removed is a private method"
+  fails "BasicObject#singleton_method_undefined is a private method"
+  fails "Defining a 'respond_to_missing?' method sets the method's visibility to private"
+  fails "Defining a method at the top-level defines it on Object with private visibility by default"
+  fails "Defining an 'initialize' method sets the method's visibility to private"
+  fails "Defining an 'initialize_clone' method sets the method's visibility to private"
+  fails "Defining an 'initialize_copy' method sets the method's visibility to private"
+  fails "Defining an 'initialize_dup' method sets the method's visibility to private"
+  fails "Enumerator#initialize is a private method"
+  fails "Enumerator::Chain#initialize is a private method" # Expected Enumerator::Chain to have private instance method 'initialize' but it does not
+  fails "Enumerator::Generator#initialize is a private method" # Expected Enumerator::Generator to have private instance method 'initialize' but it does not
+  fails "Enumerator::Lazy#initialize is a private method" # Expected Enumerator::Lazy to have private instance method 'initialize' but it does not
+  fails "Enumerator::Yielder#initialize is a private method" # Expected Enumerator::Yielder to have private instance method 'initialize' but it does not
+  fails "Invoking a private getter method does not permit self as a receiver"
+  fails "Kernel#block_given? is a private method"
+  fails "Kernel#eval is a private method"
+  fails "Kernel#initialize_clone is a private instance method" # Expected Kernel to have private instance method 'initialize_clone' but it does not
+  fails "Kernel#initialize_dup is a private instance method" # Expected Kernel to have private instance method 'initialize_dup' but it does not
+  fails "Kernel#iterator? is a private method"
+  fails "Kernel#local_variables is a private method"
+  fails "Kernel#methods returns private singleton methods defined by obj.meth"
+  fails "Kernel#methods returns singleton methods defined in 'class << self' when it follows 'private'"
+  fails "Kernel#p is a private method"
+  fails "Kernel#print is a private method"
+  fails "Kernel#printf is a private method"
+  fails "Kernel#private_methods returns a list of the names of privately accessible methods in the object and its ancestors and mixed-in modules"
+  fails "Kernel#private_methods returns a list of the names of privately accessible methods in the object"
+  fails "Kernel#private_methods returns private methods mixed in to the metaclass"
+  fails "Kernel#private_methods when not passed an argument returns a unique list for a class including a module"
+  fails "Kernel#private_methods when not passed an argument returns a unique list for a subclass of a class that includes a module"
+  fails "Kernel#private_methods when not passed an argument returns a unique list for an object extended by a module"
+  fails "Kernel#private_methods when passed false returns a list of private methods in without its ancestors"
+  fails "Kernel#private_methods when passed nil returns a list of private methods in without its ancestors"
+  fails "Kernel#private_methods when passed true returns a unique list for a class including a module"
+  fails "Kernel#private_methods when passed true returns a unique list for a subclass of a class that includes a module"
+  fails "Kernel#private_methods when passed true returns a unique list for an object extended by a module"
+  fails "Kernel#protected_methods returns a list of the names of protected methods accessible in the object and from its ancestors and mixed-in modules"
+  fails "Kernel#protected_methods returns a list of the names of protected methods accessible in the object"
+  fails "Kernel#protected_methods returns methods mixed in to the metaclass"
+  fails "Kernel#protected_methods when not passed an argument returns a unique list for a class including a module"
+  fails "Kernel#protected_methods when not passed an argument returns a unique list for a subclass of a class that includes a module"
+  fails "Kernel#protected_methods when not passed an argument returns a unique list for an object extended by a module"
+  fails "Kernel#protected_methods when passed false returns a list of protected methods in without its ancestors"
+  fails "Kernel#protected_methods when passed nil returns a list of protected methods in without its ancestors"
+  fails "Kernel#protected_methods when passed true returns a unique list for a class including a module"
+  fails "Kernel#protected_methods when passed true returns a unique list for a subclass of a class that includes a module"
+  fails "Kernel#protected_methods when passed true returns a unique list for an object extended by a module"
+  fails "Kernel#public_send called from own public method raises a NoMethodError if the method is private"
+  fails "Kernel#public_send called from own public method raises a NoMethodError if the method is protected"
+  fails "Kernel#public_send raises a NoMethodError if the method is protected"
+  fails "Kernel#public_send raises a NoMethodError if the named method is an alias of a private method"
+  fails "Kernel#public_send raises a NoMethodError if the named method is an alias of a protected method"
+  fails "Kernel#public_send raises a NoMethodError if the named method is private"
+  fails "Kernel#puts is a private method"
+  fails "Kernel#respond_to? does not change method visibility when finding private method"
+  fails "Kernel#respond_to? returns false even if obj responds to the given private method (include_private = false)"
+  fails "Kernel#respond_to? returns false if obj responds to the given private method"
+  fails "Kernel#respond_to? returns false if obj responds to the given protected method (include_private = false)"
+  fails "Kernel#respond_to? returns false if obj responds to the given protected method"
+  fails "Kernel#respond_to_missing? is a private method"
+  fails "Kernel#respond_to_missing? is called when obj responds to the given private method, include_private = false"
+  fails "Kernel#respond_to_missing? is called when obj responds to the given protected method, include_private = false"
+  fails "Kernel#respond_to_missing? isn't called when obj responds to the given private method, include_private = true"
+  fails "Kernel#respond_to_missing? isn't called when obj responds to the given protected method, include_private = true"
+  fails "Kernel#respond_to_missing? isn't called when obj responds to the given public method, include_private = true"
+  fails "Kernel#singleton_methods when not passed an argument does not return private class methods for a class"
+  fails "Kernel#singleton_methods when not passed an argument does not return private inherited singleton methods for a class including a module"
+  fails "Kernel#singleton_methods when not passed an argument does not return private inherited singleton methods for a module including a module"
+  fails "Kernel#singleton_methods when not passed an argument does not return private inherited singleton methods for a subclass including a module"
+  fails "Kernel#singleton_methods when not passed an argument does not return private inherited singleton methods for a subclass of a class including a module"
+  fails "Kernel#singleton_methods when not passed an argument does not return private inherited singleton methods for a subclass of a class that includes a module, where the subclass also includes a module"
+  fails "Kernel#singleton_methods when not passed an argument does not return private inherited singleton methods for a subclass"
+  fails "Kernel#singleton_methods when not passed an argument does not return private module methods for a module"
+  fails "Kernel#singleton_methods when not passed an argument does not return private singleton methods for a class extended with a module"
+  fails "Kernel#singleton_methods when not passed an argument does not return private singleton methods for an object extended with a module"
+  fails "Kernel#singleton_methods when not passed an argument does not return private singleton methods for an object extended with two modules"
+  fails "Kernel#singleton_methods when not passed an argument does not return private singleton methods for an object extented with a module including a module"
+  fails "Kernel#singleton_methods when passed false does not return private class methods for a class"
+  fails "Kernel#singleton_methods when passed false does not return private inherited singleton methods for a class including a module"
+  fails "Kernel#singleton_methods when passed false does not return private inherited singleton methods for a module including a module"
+  fails "Kernel#singleton_methods when passed false does not return private inherited singleton methods for a subclass including a module"
+  fails "Kernel#singleton_methods when passed false does not return private inherited singleton methods for a subclass of a class including a module"
+  fails "Kernel#singleton_methods when passed false does not return private inherited singleton methods for a subclass of a class that includes a module, where the subclass also includes a module"
+  fails "Kernel#singleton_methods when passed false does not return private inherited singleton methods for a subclass"
+  fails "Kernel#singleton_methods when passed false does not return private module methods for a module"
+  fails "Kernel#singleton_methods when passed false does not return private singleton methods for a class extended with a module"
+  fails "Kernel#singleton_methods when passed false does not return private singleton methods for an object extended with a module"
+  fails "Kernel#singleton_methods when passed false does not return private singleton methods for an object extended with two modules"
+  fails "Kernel#singleton_methods when passed false does not return private singleton methods for an object extented with a module including a module"
+  fails "Kernel#singleton_methods when passed true does not return private class methods for a class"
+  fails "Kernel#singleton_methods when passed true does not return private inherited singleton methods for a class including a module"
+  fails "Kernel#singleton_methods when passed true does not return private inherited singleton methods for a module including a module"
+  fails "Kernel#singleton_methods when passed true does not return private inherited singleton methods for a subclass including a module"
+  fails "Kernel#singleton_methods when passed true does not return private inherited singleton methods for a subclass of a class including a module"
+  fails "Kernel#singleton_methods when passed true does not return private inherited singleton methods for a subclass of a class that includes a module, where the subclass also includes a module"
+  fails "Kernel#singleton_methods when passed true does not return private inherited singleton methods for a subclass"
+  fails "Kernel#singleton_methods when passed true does not return private module methods for a module"
+  fails "Kernel#singleton_methods when passed true does not return private singleton methods for a class extended with a module"
+  fails "Kernel#singleton_methods when passed true does not return private singleton methods for an object extended with a module"
+  fails "Kernel#singleton_methods when passed true does not return private singleton methods for an object extended with two modules"
+  fails "Kernel#singleton_methods when passed true does not return private singleton methods for an object extented with a module including a module"
+  fails "Kernel.global_variables is a private method"
+  fails "Kernel.lambda is a private method"
+  fails "Kernel.loop is a private method"
+  fails "Kernel.proc is a private method"
+  fails "Kernel.rand is a private method"
+  fails "Kernel.srand is a private method"
+  fails "Matrix.new is private" # Expected Matrix to have private method 'new' but it does not
+  fails "Method#== missing methods calls respond_to_missing? with true to include private methods"
+  fails "Method#eql? missing methods calls respond_to_missing? with true to include private methods"
+  fails "Module#alias_method aliasing special methods keeps initialize private when aliasing"
+  fails "Module#alias_method aliasing special methods keeps initialize_clone private when aliasing"
+  fails "Module#alias_method aliasing special methods keeps initialize_copy private when aliasing"
+  fails "Module#alias_method aliasing special methods keeps initialize_dup private when aliasing"
+  fails "Module#alias_method aliasing special methods keeps respond_to_missing? private when aliasing"
+  fails "Module#alias_method is a private method"
+  fails "Module#append_features is a private method"
+  fails "Module#attr is a private method"
+  fails "Module#attr_accessor is a private method"
+  fails "Module#attr_reader is a private method"
+  fails "Module#attr_writer is a private method"
+  fails "Module#define_method is private"
+  fails "Module#define_method when given an UnboundMethod sets the new method's visibility to the current frame's visibility" # Expected NoMethodError but no exception was raised ("piggy" was returned)
+  fails "Module#define_method when name is :initialize given an UnboundMethod sets the visibility to private when method is named :initialize"
+  fails "Module#define_method when name is :initialize passed a block sets visibility to private when method name is :initialize"
+  fails "Module#define_method when name is not a special private name given an UnboundMethod and called from the target module sets the visibility of the method to the current visibility"
+  fails "Module#define_method when name is not a special private name given an UnboundMethod sets the visibility of the method to the current visibility"
+  fails "Module#define_method when name is not a special private name passed a block and called from the target module sets the visibility of the method to the current visibility"
+  fails "Module#extend_object is a private method"
+  fails "Module#extend_object is called even when private"
+  fails "Module#extended is private in its default implementation"
+  fails "Module#included is private in its default implementation"
+  fails "Module#instance_methods makes a private Object instance method public in Kernel"
+  fails "Module#method_added is a private instance method"
+  fails "Module#method_removed is a private instance method"
+  fails "Module#method_undefined is a private instance method"
+  fails "Module#module_function is a private method"
+  fails "Module#module_function with specific method names can make accessible private methods"
+  fails "Module#module_function with specific method names makes the instance methods private"
+  fails "Module#prepend_features is a private method"
+  fails "Module#prepended is a private method"
+  fails "Module#private is a private method"
+  fails "Module#private makes a public Object instance method private in Kernel"
+  fails "Module#private makes a public Object instance method private in a new module"
+  fails "Module#private makes the target method uncallable from other types"
+  fails "Module#private only makes the method private in the class it is called on" # Expected NameError but no exception was raised (2 was returned)
+  fails "Module#private raises a NameError when given an undefined name"
+  fails "Module#private returns self"
+  fails "Module#private without arguments affects evaled method definitions when itself is outside the eval"
+  fails "Module#private without arguments affects normally if itself and following method definitions are inside a eval"
+  fails "Module#private without arguments affects normally if itself and method definitions are inside a module_eval"
+  fails "Module#private without arguments continues setting visibility if the body encounters other visibility setters with arguments"
+  fails "Module#private without arguments does not affect method definitions when itself is inside an eval and method definitions are outside"
+  fails "Module#private without arguments does not affect module_evaled method definitions when itself is outside the eval"
+  fails "Module#private without arguments sets visibility to following method definitions"
+  fails "Module#private without arguments stops setting visibility if the body encounters other visibility setters without arguments"
+  fails "Module#private without arguments within a closure sets the visibility outside the closure"
+  fails "Module#private_class_method accepts more than one method at a time"
+  fails "Module#private_class_method makes a class method private"
+  fails "Module#private_class_method makes an existing class method private up the inheritance tree"
+  fails "Module#private_class_method makes an existing class method private"
+  fails "Module#private_class_method raises a NameError if class method doesn't exist"
+  fails "Module#private_class_method raises a NameError when the given name is an instance method"
+  fails "Module#private_class_method raises a NameError when the given name is not a method"
+  fails "Module#private_constant accepts multiple names"
+  fails "Module#private_constant accepts strings as constant names"
+  fails "Module#private_constant can only be passed constant names defined in the target (self) module"
+  fails "Module#private_constant marked constants NameError by #private_constant has :receiver and :name attributes" # Expected NameError but no exception was raised (true was returned)
+  fails "Module#private_constant marked constants NameError by #private_constant has the defined class as the :name attribute" # Expected NameError but no exception was raised (true was returned)
+  fails "Module#private_constant marked constants in Object cannot be accessed using ::Const form"
+  fails "Module#private_constant marked constants in Object is not defined? using ::Const form"
+  fails "Module#private_constant marked constants in a class can be accessed from lexical scope"
+  fails "Module#private_constant marked constants in a class can be accessed from the class itself"
+  fails "Module#private_constant marked constants in a class cannot be accessed from outside the class"
+  fails "Module#private_constant marked constants in a class cannot be reopened as a class"
+  fails "Module#private_constant marked constants in a class cannot be reopened as a module"
+  fails "Module#private_constant marked constants in a class is defined? from lexical scope"
+  fails "Module#private_constant marked constants in a class is not defined? with A::B form"
+  fails "Module#private_constant marked constants in a module can be accessed from lexical scope"
+  fails "Module#private_constant marked constants in a module can be accessed from the module itself"
+  fails "Module#private_constant marked constants in a module cannot be accessed from outside the module"
+  fails "Module#private_constant marked constants in a module cannot be reopened as a class from scope where constant would be private" # Expected NameError but no exception was raised (nil was returned)
+  fails "Module#private_constant marked constants in a module cannot be reopened as a class"
+  fails "Module#private_constant marked constants in a module cannot be reopened as a module from scope where constant would be private" # Exception: Cannot read property '$pretty_inspect' of undefined
+  fails "Module#private_constant marked constants in a module cannot be reopened as a module"
+  fails "Module#private_constant marked constants in a module is defined? from lexical scope"
+  fails "Module#private_constant marked constants in a module is not defined? with A::B form"
+  fails "Module#private_constant marked constants remain private even when updated"
+  fails "Module#private_instance_methods returns a list of private methods in module and its ancestors"
+  fails "Module#private_instance_methods when not passed an argument returns a unique list for a class including a module"
+  fails "Module#private_instance_methods when not passed an argument returns a unique list for a subclass"
+  fails "Module#private_instance_methods when passed false as a parameter, should return only methods defined in that module"
+  fails "Module#private_instance_methods when passed true returns a unique list for a class including a module"
+  fails "Module#private_instance_methods when passed true returns a unique list for a subclass"
+  fails "Module#private_method_defined? accepts symbols for the method name"
+  fails "Module#private_method_defined? calls #to_str to convert an Object"
+  fails "Module#private_method_defined? raises a TypeError if passed a Fixnum"
+  fails "Module#private_method_defined? raises a TypeError if passed an object that defines #to_sym"
+  fails "Module#private_method_defined? raises a TypeError if passed an object that does not defined #to_str"
+  fails "Module#private_method_defined? raises a TypeError if passed false"
+  fails "Module#private_method_defined? raises a TypeError if passed nil"
+  fails "Module#private_method_defined? returns true if the named private method is defined by module or its ancestors"
+  fails "Module#protected is a private method"
+  fails "Module#protected makes a public Object instance method protected in Kernel"
+  fails "Module#protected makes a public Object instance method protected in a new module"
+  fails "Module#protected makes an existing class method protected"
+  fails "Module#protected raises a NameError when given an undefined name"
+  fails "Module#protected returns self"
+  fails "Module#protected without arguments affects evaled method definitions when itself is outside the eval"
+  fails "Module#protected without arguments affects normally if itself and following method definitions are inside a eval"
+  fails "Module#protected without arguments affects normally if itself and method definitions are inside a module_eval"
+  fails "Module#protected without arguments continues setting visibility if the body encounters other visibility setters with arguments"
+  fails "Module#protected without arguments does not affect method definitions when itself is inside an eval and method definitions are outside"
+  fails "Module#protected without arguments does not affect module_evaled method definitions when itself is outside the eval"
+  fails "Module#protected without arguments sets visibility to following method definitions"
+  fails "Module#protected without arguments stops setting visibility if the body encounters other visibility setters without arguments"
+  fails "Module#protected without arguments within a closure sets the visibility outside the closure"
+  fails "Module#protected_instance_methods default list should be the same as passing true as an argument"
+  fails "Module#protected_instance_methods returns a list of protected methods in module and its ancestors"
+  fails "Module#protected_instance_methods when not passed an argument returns a unique list for a class including a module"
+  fails "Module#protected_instance_methods when not passed an argument returns a unique list for a subclass"
+  fails "Module#protected_instance_methods when passed false as a parameter, should return only methods defined in that module"
+  fails "Module#protected_instance_methods when passed true returns a unique list for a class including a module"
+  fails "Module#protected_instance_methods when passed true returns a unique list for a subclass"
+  fails "Module#protected_method_defined? accepts symbols for the method name"
+  fails "Module#protected_method_defined? calls #to_str to convert an Object"
+  fails "Module#protected_method_defined? raises a TypeError if passed a Fixnum"
+  fails "Module#protected_method_defined? raises a TypeError if passed an object that defines #to_sym"
+  fails "Module#protected_method_defined? raises a TypeError if passed an object that does not defined #to_str"
+  fails "Module#protected_method_defined? raises a TypeError if passed false"
+  fails "Module#protected_method_defined? raises a TypeError if passed nil"
+  fails "Module#protected_method_defined? returns true if the named protected method is defined by module or its ancestors"
+  fails "Module#public is a private method"
+  fails "Module#public makes a private Object instance method public in Kernel"
+  fails "Module#public makes a private Object instance method public in a new module"
+  fails "Module#public raises a NameError when given an undefined name"
+  fails "Module#public returns self"
+  fails "Module#public without arguments affects evaled method definitions when itself is outside the eval"
+  fails "Module#public without arguments affects normally if itself and following method definitions are inside a eval"
+  fails "Module#public without arguments does not affect method definitions when itself is inside an eval and method definitions are outside"
+  fails "Module#public without arguments does not affect module_evaled method definitions when itself is outside the eval"
+  fails "Module#public without arguments stops setting visibility if the body encounters other visibility setters without arguments"
+  fails "Module#public_class_method accepts more than one method at a time"
+  fails "Module#public_class_method makes an existing class method public up the inheritance tree"
+  fails "Module#public_class_method makes an existing class method public"
+  fails "Module#public_class_method raises a NameError if class method doesn't exist"
+  fails "Module#public_class_method raises a NameError when the given name is an instance method"
+  fails "Module#public_class_method raises a NameError when the given name is not a method"
+  fails "Module#public_constant accepts multiple names"
+  fails "Module#public_constant accepts strings as constant names"
+  fails "Module#public_constant can only be passed constant names defined in the target (self) module"
+  fails "Module#public_constant marked constants in a class can be accessed from outside the class"
+  fails "Module#public_constant marked constants in a class is defined? with A::B form" # Exception: Opal.TypeError is not a constructor
+  fails "Module#public_constant marked constants in a module can be accessed from outside the module"
+  fails "Module#public_constant marked constants in a module is defined? with A::B form" # Exception: Opal.TypeError is not a constructor
+  fails "Module#public_instance_method is a public method"
+  fails "Module#public_instance_method raises a NameError if the method is private"
+  fails "Module#public_instance_method raises a NameError when given a protected method name"
+  fails "Module#public_instance_method raises a TypeError when given a name is not Symbol or String"
+  fails "Module#public_instance_method requires an argument"
+  fails "Module#public_instance_method sets the NameError#name attribute to the name of the missing method"
+  fails "Module#public_instance_method when given a public method name accepts if the name is a Symbol or String"
+  fails "Module#public_instance_method when given a public method name returns an UnboundMethod corresponding to the defined Module"
+  fails "Module#public_instance_methods when passed false as a parameter, should return only methods defined in that module"
+  fails "Module#public_method_defined? calls #to_str to convert an Object"
+  fails "Module#public_method_defined? raises a TypeError if passed a Fixnum"
+  fails "Module#public_method_defined? raises a TypeError if passed an object that defines #to_sym"
+  fails "Module#public_method_defined? raises a TypeError if passed an object that does not defined #to_str"
+  fails "Module#public_method_defined? raises a TypeError if passed false"
+  fails "Module#public_method_defined? raises a TypeError if passed nil"
+  fails "Module#public_method_defined? returns false if method is not a public method"
+  fails "Module#remove_const is a private method"
+  fails "Module#remove_method is a private method"
+  fails "Module#undef_method is a private method"
+  fails "NoMethodError#message for an protected method match /protected method/"
+  fails "NoMethodError#message for private method match /private method/"
+  fails "OpenStruct#initialize is private"
+  fails "OpenStruct#new_ostruct_member is protected"
+  fails "OpenStruct#table is protected"
+  fails "Rational#marshal_dump is a private method"
+  fails "Redefining a singleton method does not inherit a previously set visibility"
+  fails "Regexp#initialize is a private method"
+  fails "Set#flatten_merge is protected"
+  fails "String#+@ returns mutable copy despite freeze-magic-comment in file" # NoMethodError: undefined method `tmp' for #<Object:0x3bdc>
+  fails "StringScanner#initialize is a private method"
+end
diff --git a/spec/filters/unsupported/proc.rb b/spec/filters/unsupported/proc.rb
new file mode 100644
index 00000000..f23220bc
--- /dev/null
+++ b/spec/filters/unsupported/proc.rb
@@ -0,0 +1,4 @@
+# NOTE: run bin/format-filters after changing this file
+opal_unsupported_filter "Proc" do
+  fails "Proc#hash returns an Integer"
+end
diff --git a/spec/filters/unsupported/random.rb b/spec/filters/unsupported/random.rb
new file mode 100644
index 00000000..717b0f04
--- /dev/null
+++ b/spec/filters/unsupported/random.rb
@@ -0,0 +1,5 @@
+# NOTE: run bin/format-filters after changing this file
+opal_unsupported_filter "Random" do
+  fails "Random#bytes returns the same numeric output for a given huge seed accross all implementations and platforms"
+  fails "Random#bytes returns the same numeric output for a given seed accross all implementations and platforms"
+end
diff --git a/spec/filters/unsupported/range.rb b/spec/filters/unsupported/range.rb
new file mode 100644
index 00000000..fccb0767
--- /dev/null
+++ b/spec/filters/unsupported/range.rb
@@ -0,0 +1,8 @@
+# NOTE: run bin/format-filters after changing this file
+opal_unsupported_filter "Range" do
+  fails "Range#initialize is private"
+  fails "Range#inspect returns a tainted string if either end is tainted"
+  fails "Range#inspect returns a untrusted string if either end is untrusted"
+  fails "Range#to_s returns a tainted string if either end is tainted"
+  fails "Range#to_s returns a untrusted string if either end is untrusted"
+end
diff --git a/spec/filters/unsupported/regexp.rb b/spec/filters/unsupported/regexp.rb
new file mode 100644
index 00000000..808766e1
--- /dev/null
+++ b/spec/filters/unsupported/regexp.rb
@@ -0,0 +1,70 @@
+# NOTE: run bin/format-filters after changing this file
+opal_unsupported_filter "Regexp" do
+  fails "Regexp with character classes doesn't match non-ASCII characters with [[:ascii:]]"
+  fails "Regexp#options does not include Regexp::FIXEDENCODING for a Regexp literal with the 'n' option"
+  fails "Regexp#options includes Regexp::FIXEDENCODING for a Regexp literal with the 'e' option"
+  fails "Regexp#options includes Regexp::FIXEDENCODING for a Regexp literal with the 's' option"
+  fails "Regexp#options includes Regexp::FIXEDENCODING for a Regexp literal with the 'u' option"
+  fails "Regexp#options includes Regexp::NOENCODING for a Regexp literal with the 'n' option"
+  fails "Regexp#source has US-ASCII encoding when created from an ASCII-only \\u{} literal"
+  fails "Regexp#source has UTF-8 encoding when created from a non-ASCII-only \\u{} literal"
+  fails "Regexp#to_s deals properly with uncaptured groups"
+  fails "Regexp#to_s displays groups with options"
+  fails "Regexp#to_s displays options if included"
+  fails "Regexp#to_s displays single group with same options as main regex as the main regex"
+  fails "Regexp#to_s handles abusive option groups"
+  fails "Regexp.escape sets the encoding of the result to ASCII-8BIT if any non-US-ASCII characters are present in an input String with invalid encoding"
+  fails "Regexp.escape sets the encoding of the result to US-ASCII if there are only US-ASCII characters present in the input String"
+  fails "Regexp.escape sets the encoding of the result to the encoding of the String if any non-US-ASCII characters are present in an input String with valid encoding"
+  fails "Regexp.new given a String accepts a Fixnum of two or more options ORed together as the second argument"
+  fails "Regexp.new given a String ignores the third argument if it is 'e' or 'euc' (case-insensitive)"
+  fails "Regexp.new given a String ignores the third argument if it is 's' or 'sjis' (case-insensitive)"
+  fails "Regexp.new given a String ignores the third argument if it is 'u' or 'utf8' (case-insensitive)"
+  fails "Regexp.new given a String uses ASCII_8BIT encoding if third argument is 'n' or 'none' (case insensitive) and non-ascii characters"
+  fails "Regexp.new given a String uses US_ASCII encoding if third argument is 'n' or 'none' (case insensitive) and only ascii characters"
+  fails "Regexp.new given a String with escaped characters accepts \\u{HHHHHH} for a single Unicode codepoint"
+  fails "Regexp.new given a String with escaped characters accepts \\u{HHHHH} for a single Unicode codepoint"
+  fails "Regexp.new given a String with escaped characters accepts \\u{HHHH} followed by characters"
+  fails "Regexp.new given a String with escaped characters accepts \\u{HHHH} for a single Unicode codepoint"
+  fails "Regexp.new given a String with escaped characters accepts \\u{HHH} for a single Unicode codepoint"
+  fails "Regexp.new given a String with escaped characters accepts \\u{HH} for a single Unicode codepoint"
+  fails "Regexp.new given a String with escaped characters accepts \\u{H} for a single Unicode codepoint"
+  fails "Regexp.new given a String with escaped characters accepts a combination of escaped octal and hexadecimal digits and \\u{HHHH}"
+  fails "Regexp.new given a String with escaped characters accepts characters followed by \\u{HHHH}"
+  fails "Regexp.new given a String with escaped characters accepts escaped hexadecimal digits followed by \\u{HHHH}"
+  fails "Regexp.new given a String with escaped characters accepts escaped octal digits followed by \\u{HHHH}"
+  fails "Regexp.new given a String with escaped characters raises a RegexpError if less than four digits are given for \\uHHHH"
+  fails "Regexp.new given a String with escaped characters raises a RegexpError if the \\u{} escape is empty"
+  fails "Regexp.new given a String with escaped characters returns a Regexp with US-ASCII encoding if UTF-8 escape sequences using only 7-bit ASCII are present"
+  fails "Regexp.new given a String with escaped characters returns a Regexp with US-ASCII encoding if only 7-bit ASCII characters are present regardless of the input String's encoding"
+  fails "Regexp.new given a String with escaped characters returns a Regexp with UTF-8 encoding if any UTF-8 escape sequences outside 7-bit ASCII are present"
+  fails "Regexp.new given a String with escaped characters returns a Regexp with source String having US-ASCII encoding if UTF-8 escape sequences using only 7-bit ASCII are present"
+  fails "Regexp.new given a String with escaped characters returns a Regexp with source String having US-ASCII encoding if only 7-bit ASCII characters are present regardless of the input String's encoding"
+  fails "Regexp.new given a String with escaped characters returns a Regexp with source String having UTF-8 encoding if any UTF-8 escape sequences outside 7-bit ASCII are present"
+  fails "Regexp.new given a String with escaped characters returns a Regexp with source String having the input String's encoding"
+  fails "Regexp.new given a String with escaped characters returns a Regexp with the input String's encoding"
+  fails "Regexp.quote sets the encoding of the result to ASCII-8BIT if any non-US-ASCII characters are present in an input String with invalid encoding"
+  fails "Regexp.quote sets the encoding of the result to US-ASCII if there are only US-ASCII characters present in the input String"
+  fails "Regexp.quote sets the encoding of the result to the encoding of the String if any non-US-ASCII characters are present in an input String with valid encoding"
+  fails "Regexp.try_convert returns the argument if given a Regexp"
+  fails "Regexp.union raises ArgumentError if the arguments include a String containing non-ASCII-compatible characters and a fixed encoding Regexp in a different encoding"
+  fails "Regexp.union raises ArgumentError if the arguments include a fixed encoding Regexp and a String containing non-ASCII-compatible characters in a different encoding"
+  fails "Regexp.union raises ArgumentError if the arguments include an ASCII-incompatible Regexp and a Regexp containing non-ASCII-compatible characters in a different encoding"
+  fails "Regexp.union raises ArgumentError if the arguments include an ASCII-incompatible Regexp and a String containing non-ASCII-compatible characters in a different encoding"
+  fails "Regexp.union raises ArgumentError if the arguments include an ASCII-incompatible Regexp and an ASCII-only Regexp"
+  fails "Regexp.union raises ArgumentError if the arguments include an ASCII-incompatible Regexp and an ASCII-only String"
+  fails "Regexp.union raises ArgumentError if the arguments include an ASCII-incompatible String and a Regexp containing non-ASCII-compatible characters in a different encoding"
+  fails "Regexp.union raises ArgumentError if the arguments include an ASCII-incompatible String and a String containing non-ASCII-compatible characters in a different encoding"
+  fails "Regexp.union raises ArgumentError if the arguments include an ASCII-incompatible String and an ASCII-only Regexp"
+  fails "Regexp.union raises ArgumentError if the arguments include an ASCII-incompatible String and an ASCII-only String"
+  fails "Regexp.union raises ArgumentError if the arguments include conflicting ASCII-incompatible Regexps"
+  fails "Regexp.union raises ArgumentError if the arguments include conflicting ASCII-incompatible Strings" # Expected ArgumentError but no exception was raised (/a|b/ was returned)
+  fails "Regexp.union raises ArgumentError if the arguments include conflicting fixed encoding Regexps"
+  fails "Regexp.union returns a Regexp with US-ASCII encoding if all arguments are ASCII-only"
+  fails "Regexp.union returns a Regexp with UTF-8 if one part is UTF-8"
+  fails "Regexp.union returns a Regexp with the encoding of a String containing non-ASCII-compatible characters and another ASCII-only String"
+  fails "Regexp.union returns a Regexp with the encoding of a String containing non-ASCII-compatible characters"
+  fails "Regexp.union returns a Regexp with the encoding of an ASCII-incompatible String argument"
+  fails "Regexp.union returns a Regexp with the encoding of multiple non-conflicting ASCII-incompatible String arguments"
+  fails "Regexp.union returns a Regexp with the encoding of multiple non-conflicting Strings containing non-ASCII-compatible characters"
+end
diff --git a/spec/filters/unsupported/set.rb b/spec/filters/unsupported/set.rb
new file mode 100644
index 00000000..846abe65
--- /dev/null
+++ b/spec/filters/unsupported/set.rb
@@ -0,0 +1,5 @@
+# NOTE: run bin/format-filters after changing this file
+opal_unsupported_filter "Set" do
+  fails "Set#eql? returns true when the passed argument is a Set and contains the same elements"
+  fails "Set#initialize is private"
+end
diff --git a/spec/filters/unsupported/singleton.rb b/spec/filters/unsupported/singleton.rb
new file mode 100644
index 00000000..3a8afac9
--- /dev/null
+++ b/spec/filters/unsupported/singleton.rb
@@ -0,0 +1,7 @@
+# NOTE: run bin/format-filters after changing this file
+opal_unsupported_filter "Singleton" do
+  fails "Singleton#_dump returns an empty string from a singleton subclass"
+  fails "Singleton#_dump returns an empty string"
+  fails "Singleton.allocate is a private method"
+  fails "Singleton.new is a private method"
+end
diff --git a/spec/filters/unsupported/string.rb b/spec/filters/unsupported/string.rb
new file mode 100644
index 00000000..66f07493
--- /dev/null
+++ b/spec/filters/unsupported/string.rb
@@ -0,0 +1,694 @@
+# NOTE: run bin/format-filters after changing this file
+opal_unsupported_filter "String" do
+  fails "BasicObject#__id__ returns a different value for two String literals"
+  fails "Module#const_defined? returns true when passed a constant name with EUC-JP characters"
+  fails "Ruby character strings taints the result of interpolation when an interpolated value is tainted"
+  fails "Ruby character strings untrusts the result of interpolation when an interpolated value is untrusted"
+  fails "String#% always taints the result when the format string is tainted"
+  fails "String#% supports negative bignums with %u or %d"
+  fails "String#% taints result for %p when argument.inspect is tainted"
+  fails "String#% taints result for %s when argument is tainted"
+  fails "String#* always taints the result when self is tainted"
+  fails "String#+ taints the result when self or other is tainted"
+  fails "String#-@ deduplicates frozen strings" # May fail randomly outside of "use strict"
+  fails "String#-@ returns a frozen copy if the String is not frozen" # May fail randomly outside of "use strict"
+  fails "String#<< concatenates the given argument to self and returns self"
+  fails "String#<< converts the given argument to a String using to_str"
+  fails "String#<< raises a RuntimeError when self is frozen"
+  fails "String#<< raises a TypeError if the given argument can't be converted to a String"
+  fails "String#<< returns a String when given a subclass instance"
+  fails "String#<< returns an instance of same class when called on a subclass"
+  fails "String#<< taints self if other is tainted"
+  fails "String#<< untrusts self if other is untrusted"
+  fails "String#<< when self and the argument are in different ASCII-compatible encodings raises Encoding::CompatibilityError if neither are ASCII-only"
+  fails "String#<< when self and the argument are in different ASCII-compatible encodings uses self's encoding if both are ASCII-only"
+  fails "String#<< when self and the argument are in different ASCII-compatible encodings uses self's encoding if the argument is ASCII-only"
+  fails "String#<< when self and the argument are in different ASCII-compatible encodings uses the argument's encoding if self is ASCII-only"
+  fails "String#<< when self is ASCII-8BIT and argument is US-ASCII uses ASCII-8BIT encoding"
+  fails "String#<< when self is in an ASCII-incompatible encoding incompatible with the argument's encoding raises Encoding::CompatibilityError if neither are empty"
+  fails "String#<< when self is in an ASCII-incompatible encoding incompatible with the argument's encoding uses self's encoding if both are empty"
+  fails "String#<< when self is in an ASCII-incompatible encoding incompatible with the argument's encoding uses self's encoding if the argument is empty"
+  fails "String#<< when self is in an ASCII-incompatible encoding incompatible with the argument's encoding uses the argument's encoding if self is empty"
+  fails "String#<< when the argument is in an ASCII-incompatible encoding incompatible with self's encoding raises Encoding::CompatibilityError if neither are empty"
+  fails "String#<< when the argument is in an ASCII-incompatible encoding incompatible with self's encoding uses self's encoding if both are empty"
+  fails "String#<< when the argument is in an ASCII-incompatible encoding incompatible with self's encoding uses self's encoding if the argument is empty"
+  fails "String#<< when the argument is in an ASCII-incompatible encoding incompatible with self's encoding uses the argument's encoding if self is empty"
+  fails "String#<< with Integer concatenates the argument interpreted as a codepoint" # NotImplementedError: String#<< not supported. Mutable String methods are not supported in Opal.
+  fails "String#<< with Integer doesn't call to_int on its argument"
+  fails "String#<< with Integer raises RangeError if the argument is an invalid codepoint for self's encoding"
+  fails "String#<< with Integer raises RangeError if the argument is negative"
+  fails "String#<< with Integer raises a RuntimeError when self is frozen"
+  fails "String#<< with Integer returns a ASCII-8BIT string if self is US-ASCII and the argument is between 128-255 (inclusive)"
+  fails "String#[] with Range always taints resulting strings when self is tainted"
+  fails "String#[] with Regexp, index always taints resulting strings when self or regexp is tainted"
+  fails "String#[] with String taints resulting strings when other is tainted"
+  fails "String#[] with Symbol raises TypeError"
+  fails "String#[] with index, length always taints resulting strings when self is tainted"
+  fails "String#[]= with Fixnum index allows assignment to the zero'th element of an empty String"
+  fails "String#[]= with Fixnum index calls #to_str to convert other to a String"
+  fails "String#[]= with Fixnum index calls to_int on index"
+  fails "String#[]= with Fixnum index raises IndexError if the string index doesn't match a position in the string"
+  fails "String#[]= with Fixnum index raises a RuntimeError when self is frozen"
+  fails "String#[]= with Fixnum index raises a TypeError if other_str can't be converted to a String"
+  fails "String#[]= with Fixnum index raises an IndexError without changing self if idx is outside of self"
+  fails "String#[]= with Fixnum index replaces the char at idx with other_str"
+  fails "String#[]= with Fixnum index taints self if other_str is tainted"
+  fails "String#[]= with Fixnum index, count appends other_str to the end of the string if idx == the length of the string"
+  fails "String#[]= with Fixnum index, count calls #to_int to convert the index and count objects"
+  fails "String#[]= with Fixnum index, count calls #to_str to convert the replacement object"
+  fails "String#[]= with Fixnum index, count counts negative idx values from end of the string"
+  fails "String#[]= with Fixnum index, count deletes characters if other_str is an empty string"
+  fails "String#[]= with Fixnum index, count deletes characters up to the maximum length of the existing string"
+  fails "String#[]= with Fixnum index, count overwrites and deletes characters if count is more than the length of other_str"
+  fails "String#[]= with Fixnum index, count raises a TypeError if #to_int for count does not return an Integer"
+  fails "String#[]= with Fixnum index, count raises a TypeError if #to_int for index does not return an Integer"
+  fails "String#[]= with Fixnum index, count raises a TypeError if other_str is a type other than String"
+  fails "String#[]= with Fixnum index, count raises a TypeError of #to_str does not return a String"
+  fails "String#[]= with Fixnum index, count raises an IndexError if count < 0"
+  fails "String#[]= with Fixnum index, count raises an IndexError if |idx| is greater than the length of the string"
+  fails "String#[]= with Fixnum index, count starts at idx and overwrites count characters before inserting the rest of other_str"
+  fails "String#[]= with Fixnum index, count taints self if other_str is tainted"
+  fails "String#[]= with Integer index allows assignment to the zero'th element of an empty String" # NotImplementedError: String#[]= not supported. Mutable String methods are not supported in Opal.
+  fails "String#[]= with Integer index calls #to_int to convert the index" # Mock 'string element set' expected to receive to_int("any_args") exactly 1 times but received it 0 times
+  fails "String#[]= with Integer index calls #to_str to convert other to a String" # Mock '-test-' expected to receive to_str("any_args") exactly 1 times but received it 0 times
+  fails "String#[]= with Integer index calls to_int on index" # NotImplementedError: String#[]= not supported. Mutable String methods are not supported in Opal.
+  fails "String#[]= with Integer index encodes the String in an encoding compatible with the replacement" # NotImplementedError: String#[]= not supported. Mutable String methods are not supported in Opal.
+  fails "String#[]= with Integer index raises IndexError if the string index doesn't match a position in the string" # Expected IndexError but got: NotImplementedError (String#[]= not supported. Mutable String methods are not supported in Opal.)
+  fails "String#[]= with Integer index raises a FrozenError when self is frozen" # Expected FrozenError but got: NotImplementedError (String#[]= not supported. Mutable String methods are not supported in Opal.)
+  fails "String#[]= with Integer index raises a TypeError if #to_int does not return an Integer" # Expected TypeError but got: NotImplementedError (String#[]= not supported. Mutable String methods are not supported in Opal.)
+  fails "String#[]= with Integer index raises a TypeError if other_str can't be converted to a String" # Expected TypeError but got: NotImplementedError (String#[]= not supported. Mutable String methods are not supported in Opal.)
+  fails "String#[]= with Integer index raises a TypeError if passed an Integer replacement" # Expected TypeError but got: NotImplementedError (String#[]= not supported. Mutable String methods are not supported in Opal.)
+  fails "String#[]= with Integer index raises an Encoding::CompatibilityError if the replacement encoding is incompatible" # NameError: uninitialized constant Encoding::EUC_JP
+  fails "String#[]= with Integer index raises an IndexError if #to_int returns a value out of range" # Expected IndexError but got: NotImplementedError (String#[]= not supported. Mutable String methods are not supported in Opal.)
+  fails "String#[]= with Integer index raises an IndexError if the index is greater than character size" # Expected IndexError but got: NotImplementedError (String#[]= not supported. Mutable String methods are not supported in Opal.)
+  fails "String#[]= with Integer index raises an IndexError without changing self if idx is outside of self" # Expected IndexError but got: NotImplementedError (String#[]= not supported. Mutable String methods are not supported in Opal.)
+  fails "String#[]= with Integer index replaces a character with a multibyte character" # NotImplementedError: String#[]= not supported. Mutable String methods are not supported in Opal.
+  fails "String#[]= with Integer index replaces a multibyte character with a character" # NotImplementedError: String#[]= not supported. Mutable String methods are not supported in Opal.
+  fails "String#[]= with Integer index replaces a multibyte character with a multibyte character" # NotImplementedError: String#[]= not supported. Mutable String methods are not supported in Opal.
+  fails "String#[]= with Integer index replaces the char at idx with other_str" # NotImplementedError: String#[]= not supported. Mutable String methods are not supported in Opal.
+  fails "String#[]= with Integer index taints self if other_str is tainted" # NotImplementedError: String#[]= not supported. Mutable String methods are not supported in Opal.
+  fails "String#[]= with Integer index, count appends other_str to the end of the string if idx == the length of the string" # NotImplementedError: String#[]= not supported. Mutable String methods are not supported in Opal.
+  fails "String#[]= with Integer index, count calls #to_int to convert the index and count objects" # Mock 'string element set index' expected to receive to_int("any_args") exactly 1 times but received it 0 times
+  fails "String#[]= with Integer index, count calls #to_str to convert the replacement object" # Mock 'string element set replacement' expected to receive to_str("any_args") exactly 1 times but received it 0 times
+  fails "String#[]= with Integer index, count counts negative idx values from end of the string" # NotImplementedError: String#[]= not supported. Mutable String methods are not supported in Opal.
+  fails "String#[]= with Integer index, count deletes a multibyte character" # NotImplementedError: String#[]= not supported. Mutable String methods are not supported in Opal.
+  fails "String#[]= with Integer index, count deletes characters if other_str is an empty string" # NotImplementedError: String#[]= not supported. Mutable String methods are not supported in Opal.
+  fails "String#[]= with Integer index, count deletes characters up to the maximum length of the existing string" # NotImplementedError: String#[]= not supported. Mutable String methods are not supported in Opal.
+  fails "String#[]= with Integer index, count encodes the String in an encoding compatible with the replacement" # NotImplementedError: String#[]= not supported. Mutable String methods are not supported in Opal.
+  fails "String#[]= with Integer index, count inserts a multibyte character" # NotImplementedError: String#[]= not supported. Mutable String methods are not supported in Opal.
+  fails "String#[]= with Integer index, count overwrites and deletes characters if count is more than the length of other_str" # NotImplementedError: String#[]= not supported. Mutable String methods are not supported in Opal.
+  fails "String#[]= with Integer index, count raises a TypeError if #to_int for count does not return an Integer" # Expected TypeError but got: NotImplementedError (String#[]= not supported. Mutable String methods are not supported in Opal.)
+  fails "String#[]= with Integer index, count raises a TypeError if #to_int for index does not return an Integer" # Expected TypeError but got: NotImplementedError (String#[]= not supported. Mutable String methods are not supported in Opal.)
+  fails "String#[]= with Integer index, count raises a TypeError if other_str is a type other than String" # Expected TypeError but got: NotImplementedError (String#[]= not supported. Mutable String methods are not supported in Opal.)
+  fails "String#[]= with Integer index, count raises a TypeError of #to_str does not return a String" # Expected TypeError but got: NotImplementedError (String#[]= not supported. Mutable String methods are not supported in Opal.)
+  fails "String#[]= with Integer index, count raises an Encoding::CompatibilityError if the replacement encoding is incompatible" # NameError: uninitialized constant Encoding::EUC_JP
+  fails "String#[]= with Integer index, count raises an IndexError if count < 0" # Expected IndexError but got: NotImplementedError (String#[]= not supported. Mutable String methods are not supported in Opal.)
+  fails "String#[]= with Integer index, count raises an IndexError if the character index is out of range of a multibyte String" # Expected IndexError but got: NotImplementedError (String#[]= not supported. Mutable String methods are not supported in Opal.)
+  fails "String#[]= with Integer index, count raises an IndexError if |idx| is greater than the length of the string" # Expected IndexError but got: NotImplementedError (String#[]= not supported. Mutable String methods are not supported in Opal.)
+  fails "String#[]= with Integer index, count replaces characters with a multibyte character" # NotImplementedError: String#[]= not supported. Mutable String methods are not supported in Opal.
+  fails "String#[]= with Integer index, count replaces multibyte characters with characters" # NotImplementedError: String#[]= not supported. Mutable String methods are not supported in Opal.
+  fails "String#[]= with Integer index, count replaces multibyte characters with multibyte characters" # NotImplementedError: String#[]= not supported. Mutable String methods are not supported in Opal.
+  fails "String#[]= with Integer index, count starts at idx and overwrites count characters before inserting the rest of other_str" # NotImplementedError: String#[]= not supported. Mutable String methods are not supported in Opal.
+  fails "String#[]= with Integer index, count taints self if other_str is tainted" # NotImplementedError: String#[]= not supported. Mutable String methods are not supported in Opal.
+  fails "String#[]= with String index raises an IndexError if the search String is not found"
+  fails "String#[]= with String index replaces characters with no characters"
+  fails "String#[]= with String index replaces fewer characters with more characters"
+  fails "String#[]= with String index replaces more characters with fewer characters"
+  fails "String#[]= with a Range index raises a RangeError if negative Range begin is out of range"
+  fails "String#[]= with a Range index raises a RangeError if positive Range begin is greater than String size"
+  fails "String#[]= with a Range index replaces a partial string"
+  fails "String#[]= with a Range index replaces the contents with a longer String"
+  fails "String#[]= with a Range index replaces the contents with a shorter String"
+  fails "String#[]= with a Range index treats a negative out-of-range Range end with a negative Range begin as a zero count"
+  fails "String#[]= with a Range index treats a negative out-of-range Range end with a positive Range begin as a zero count"
+  fails "String#[]= with a Range index uses the Range end as an index rather than a count"
+  fails "String#[]= with a Range index with an empty replacement does not replace a character with a zero exclude-end range"
+  fails "String#[]= with a Range index with an empty replacement does not replace a character with a zero-index, zero exclude-end range"
+  fails "String#[]= with a Range index with an empty replacement replaces a character with a zero non-exclude-end range"
+  fails "String#[]= with a Range index with an empty replacement replaces a character with zero-index, zero non-exclude-end range"
+  fails "String#[]= with a Regexp index calls #to_str to convert the replacement"
+  fails "String#[]= with a Regexp index checks the match before calling #to_str to convert the replacement"
+  fails "String#[]= with a Regexp index raises IndexError if the regexp index doesn't match a position in the string"
+  fails "String#[]= with a Regexp index replaces the matched text with the rhs"
+  fails "String#[]= with a Regexp index with 3 arguments allows the specified capture to be negative and count from the end"
+  fails "String#[]= with a Regexp index with 3 arguments calls #to_int to convert the second object"
+  fails "String#[]= with a Regexp index with 3 arguments checks the match index before calling #to_str to convert the replacement"
+  fails "String#[]= with a Regexp index with 3 arguments raises IndexError if the specified capture isn't available"
+  fails "String#[]= with a Regexp index with 3 arguments raises a TypeError if #to_int does not return a Fixnum"
+  fails "String#[]= with a Regexp index with 3 arguments raises a TypeError if #to_int does not return an Integer" # Expected TypeError but got: NotImplementedError (String#[]= not supported. Mutable String methods are not supported in Opal.)
+  fails "String#[]= with a Regexp index with 3 arguments uses the 2nd of 3 arguments as which capture should be replaced"
+  fails "String#[]= with a Regexp index with 3 arguments when the optional capture does not match raises an IndexError before setting the replacement"
+  fails "String#capitalize taints resulting string when self is tainted"
+  fails "String#capitalize! capitalizes self in place for all of Unicode" # NotImplementedError: String#capitalize! not supported. Mutable String methods are not supported in Opal.
+  fails "String#capitalize! capitalizes self in place"
+  fails "String#capitalize! does not allow invalid options" # NotImplementedError: String#capitalize! not supported. Mutable String methods are not supported in Opal.
+  fails "String#capitalize! does not allow the :fold option for upcasing" # NotImplementedError: String#capitalize! not supported. Mutable String methods are not supported in Opal.
+  fails "String#capitalize! full Unicode case mapping modifies self in place for all of Unicode with no option" # NotImplementedError: String#capitalize! not supported. Mutable String methods are not supported in Opal.
+  fails "String#capitalize! full Unicode case mapping only capitalizes the first resulting character when upcasing a character produces a multi-character sequence" # NotImplementedError: String#capitalize! not supported. Mutable String methods are not supported in Opal.
+  fails "String#capitalize! full Unicode case mapping updates string metadata" # NotImplementedError: String#capitalize! not supported. Mutable String methods are not supported in Opal.
+  fails "String#capitalize! full Unicode case mapping works for non-ascii-compatible encodings" # NotImplementedError: String#capitalize! not supported. Mutable String methods are not supported in Opal.
+  fails "String#capitalize! modifies self in place for ASCII-only case mapping does not capitalize non-ASCII characters" # NotImplementedError: String#capitalize! not supported. Mutable String methods are not supported in Opal.
+  fails "String#capitalize! modifies self in place for ASCII-only case mapping works for non-ascii-compatible encodings" # NotImplementedError: String#capitalize! not supported. Mutable String methods are not supported in Opal.
+  fails "String#capitalize! modifies self in place for full Unicode case mapping adapted for Lithuanian allows Turkic as an extra option (and applies Turkic semantics)" # NotImplementedError: String#capitalize! not supported. Mutable String methods are not supported in Opal.
+  fails "String#capitalize! modifies self in place for full Unicode case mapping adapted for Lithuanian currently works the same as full Unicode case mapping" # NotImplementedError: String#capitalize! not supported. Mutable String methods are not supported in Opal.
+  fails "String#capitalize! modifies self in place for full Unicode case mapping adapted for Lithuanian does not allow any other additional option" # NotImplementedError: String#capitalize! not supported. Mutable String methods are not supported in Opal.
+  fails "String#capitalize! modifies self in place for full Unicode case mapping adapted for Turkic languages allows Lithuanian as an extra option" # NotImplementedError: String#capitalize! not supported. Mutable String methods are not supported in Opal.
+  fails "String#capitalize! modifies self in place for full Unicode case mapping adapted for Turkic languages capitalizes ASCII characters according to Turkic semantics" # NotImplementedError: String#capitalize! not supported. Mutable String methods are not supported in Opal.
+  fails "String#capitalize! modifies self in place for full Unicode case mapping adapted for Turkic languages does not allow any other additional option" # NotImplementedError: String#capitalize! not supported. Mutable String methods are not supported in Opal.
+  fails "String#capitalize! modifies self in place for non-ascii-compatible encodings" # NotImplementedError: String#capitalize! not supported. Mutable String methods are not supported in Opal.
+  fails "String#capitalize! raises a RuntimeError when self is frozen"
+  fails "String#capitalize! returns nil when no changes are made"
+  fails "String#center with length, padding taints result when self or padstr is tainted"
+  fails "String#center with length, padding when padding is tainted and self is untainted returns a tainted string if and only if length is longer than self"
+  fails "String#chomp when passed '' taints the result if self is tainted"
+  fails "String#chomp when passed '\\n' taints the result if self is tainted"
+  fails "String#chomp when passed a String does not taint the result when the argument is tainted"
+  fails "String#chomp when passed a String taints the result if self is tainted"
+  fails "String#chomp when passed nil returns a copy of the String"
+  fails "String#chomp when passed nil taints the result if self is tainted"
+  fails "String#chomp when passed no argument taints the result if self is tainted"
+  fails "String#chomp! raises a RuntimeError on a frozen instance when it is modified"
+  fails "String#chomp! raises a RuntimeError on a frozen instance when it would not be modified"
+  fails "String#chomp! removes the final carriage return, newline from a multibyte String" # NotImplementedError: String#chomp! not supported. Mutable String methods are not supported in Opal.
+  fails "String#chomp! removes the final carriage return, newline from a non-ASCII String when the record separator is changed" # ArgumentError: unknown encoding name - utf-32be
+  fails "String#chomp! removes the final carriage return, newline from a non-ASCII String" # ArgumentError: unknown encoding name - utf-32be
+  fails "String#chomp! returns nil when the String is not modified" # NotImplementedError: String#chomp! not supported. Mutable String methods are not supported in Opal.
+  fails "String#chomp! when passed '' does not remove a final carriage return"
+  fails "String#chomp! when passed '' removes a final carriage return, newline"
+  fails "String#chomp! when passed '' removes a final newline"
+  fails "String#chomp! when passed '' removes more than one trailing carriage return, newline pairs"
+  fails "String#chomp! when passed '' removes more than one trailing newlines"
+  fails "String#chomp! when passed '' returns nil when self is empty"
+  fails "String#chomp! when passed '' taints the result if self is tainted"
+  fails "String#chomp! when passed '\\n' removes one trailing carriage return"
+  fails "String#chomp! when passed '\\n' removes one trailing carriage return, newline pair" # NotImplementedError: String#chomp! not supported. Mutable String methods are not supported in Opal.
+  fails "String#chomp! when passed '\\n' removes one trailing newline"
+  fails "String#chomp! when passed '\\n' returns nil when self is empty"
+  fails "String#chomp! when passed '\\n' taints the result if self is tainted"
+  fails "String#chomp! when passed a String does not taint the result when the argument is tainted"
+  fails "String#chomp! when passed a String removes the trailing characters if they match the argument"
+  fails "String#chomp! when passed a String returns nil if the argument does not match the trailing characters"
+  fails "String#chomp! when passed a String returns nil when self is empty"
+  fails "String#chomp! when passed a String taints the result if self is tainted"
+  fails "String#chomp! when passed an Object calls #to_str to convert to a String"
+  fails "String#chomp! when passed an Object raises a TypeError if #to_str does not return a String"
+  fails "String#chomp! when passed nil returns nil when self is empty"
+  fails "String#chomp! when passed nil returns nil"
+  fails "String#chomp! when passed no argument modifies self"
+  fails "String#chomp! when passed no argument removes one trailing carriage return"
+  fails "String#chomp! when passed no argument removes one trailing carriage return, newline pair" # NotImplementedError: String#chomp! not supported. Mutable String methods are not supported in Opal.
+  fails "String#chomp! when passed no argument removes one trailing newline"
+  fails "String#chomp! when passed no argument removes trailing characters that match $/ when it has been assigned a value"
+  fails "String#chomp! when passed no argument returns nil if self is not modified"
+  fails "String#chomp! when passed no argument returns nil when self is empty"
+  fails "String#chomp! when passed no argument returns subclass instances when called on a subclass"
+  fails "String#chomp! when passed no argument taints the result if self is tainted"
+  fails "String#chop removes the final carriage return, newline from a non-ASCII String"
+  fails "String#chop returns a new string when applied to an empty string"
+  fails "String#chop taints result when self is tainted"
+  fails "String#chop untrusts result when self is untrusted"
+  fails "String#chop! does not remove more than the final carriage return, newline"
+  fails "String#chop! raises a RuntimeError on a frozen instance that is modified"
+  fails "String#chop! raises a RuntimeError on a frozen instance that would not be modified"
+  fails "String#chop! removes a multi-byte character" # NotImplementedError: String#chop! not supported. Mutable String methods are not supported in Opal.
+  fails "String#chop! removes the carriage return, newline if they are the only characters" # NotImplementedError: String#chop! not supported. Mutable String methods are not supported in Opal.
+  fails "String#chop! removes the final carriage return"
+  fails "String#chop! removes the final carriage return, newline from a multibyte String" # NotImplementedError: String#chop! not supported. Mutable String methods are not supported in Opal.
+  fails "String#chop! removes the final carriage return, newline from a non-ASCII String" # ArgumentError: unknown encoding name - utf-32be
+  fails "String#chop! removes the final carriage return, newline"
+  fails "String#chop! removes the final character"
+  fails "String#chop! removes the final newline"
+  fails "String#chop! returns nil when called on an empty string"
+  fails "String#chop! returns self if modifications were made"
+  fails "String#clear preserves its encoding" # NameError: uninitialized constant Encoding::SHIFT_JIS
+  fails "String#clear raises a RuntimeError if self is frozen" # NoMethodError: undefined method `clear' for "Jolene":String
+  fails "String#clear returns self after emptying it" # NoMethodError: undefined method `clear' for "Jolene":String
+  fails "String#clear sets self equal to the empty String" # NoMethodError: undefined method `clear' for "Jolene":String
+  fails "String#clear works with multibyte Strings" # NoMethodError: undefined method `clear' for "靥ࡶ":String
+  fails "String#clone copies instance variables" # Strings are immutable, so they can't have ivars
+  fails "String#clone does not modify the original string when changing cloned string" # string can't be modified
+  fails "String#concat concatenates the given argument to self and returns self"
+  fails "String#concat concatenates the initial value when given arguments contain 2 self"
+  fails "String#concat converts the given argument to a String using to_str"
+  fails "String#concat raises a RuntimeError when self is frozen"
+  fails "String#concat raises a TypeError if the given argument can't be converted to a String"
+  fails "String#concat returns a String when given a subclass instance"
+  fails "String#concat returns an instance of same class when called on a subclass"
+  fails "String#concat returns self when given no arguments"
+  fails "String#concat taints self if other is tainted"
+  fails "String#concat takes multiple arguments"
+  fails "String#concat untrusts self if other is untrusted"
+  fails "String#concat when self and the argument are in different ASCII-compatible encodings raises Encoding::CompatibilityError if neither are ASCII-only"
+  fails "String#concat when self and the argument are in different ASCII-compatible encodings uses self's encoding if both are ASCII-only"
+  fails "String#concat when self and the argument are in different ASCII-compatible encodings uses self's encoding if the argument is ASCII-only"
+  fails "String#concat when self and the argument are in different ASCII-compatible encodings uses the argument's encoding if self is ASCII-only"
+  fails "String#concat when self is ASCII-8BIT and argument is US-ASCII uses ASCII-8BIT encoding"
+  fails "String#concat when self is in an ASCII-incompatible encoding incompatible with the argument's encoding raises Encoding::CompatibilityError if neither are empty"
+  fails "String#concat when self is in an ASCII-incompatible encoding incompatible with the argument's encoding uses self's encoding if both are empty"
+  fails "String#concat when self is in an ASCII-incompatible encoding incompatible with the argument's encoding uses self's encoding if the argument is empty"
+  fails "String#concat when self is in an ASCII-incompatible encoding incompatible with the argument's encoding uses the argument's encoding if self is empty"
+  fails "String#concat when the argument is in an ASCII-incompatible encoding incompatible with self's encoding raises Encoding::CompatibilityError if neither are empty"
+  fails "String#concat when the argument is in an ASCII-incompatible encoding incompatible with self's encoding uses self's encoding if both are empty"
+  fails "String#concat when the argument is in an ASCII-incompatible encoding incompatible with self's encoding uses self's encoding if the argument is empty"
+  fails "String#concat when the argument is in an ASCII-incompatible encoding incompatible with self's encoding uses the argument's encoding if self is empty"
+  fails "String#concat with Integer concatenates the argument interpreted as a codepoint" # NoMethodError: undefined method `concat' for ""
+  fails "String#concat with Integer doesn't call to_int on its argument"
+  fails "String#concat with Integer raises RangeError if the argument is an invalid codepoint for self's encoding"
+  fails "String#concat with Integer raises RangeError if the argument is negative"
+  fails "String#concat with Integer raises a RuntimeError when self is frozen"
+  fails "String#concat with Integer returns a ASCII-8BIT string if self is US-ASCII and the argument is between 128-255 (inclusive)"
+  fails "String#count returns the number of occurrences of a multi-byte character"
+  fails "String#delete taints result when self is tainted"
+  fails "String#delete! modifies self in place and returns self"
+  fails "String#delete! raises a RuntimeError when self is frozen"
+  fails "String#delete! returns nil if no modifications were made"
+  fails "String#delete_prefix returns a copy of the string, when the prefix isn't found" # Fails because "string".equal?("string") is always true
+  fails "String#delete_prefix! calls to_str on its argument"
+  fails "String#delete_prefix! doesn't set $~"
+  fails "String#delete_prefix! removes the found prefix"
+  fails "String#delete_prefix! returns nil if no change is made"
+  fails "String#delete_suffix returns a copy of the string, when the suffix isn't found" # Fails because "string".equal?("string") is always true
+  fails "String#delete_suffix! calls to_str on its argument"
+  fails "String#delete_suffix! doesn't set $~"
+  fails "String#delete_suffix! removes the found prefix"
+  fails "String#delete_suffix! returns nil if no change is made"
+  fails "String#downcase is locale insensitive (only replaces A-Z)"
+  fails "String#downcase taints result when self is tainted"
+  fails "String#downcase! ASCII-only case mapping does not downcase non-ASCII characters" # NotImplementedError: String#downcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#downcase! ASCII-only case mapping works for non-ascii-compatible encodings" # NotImplementedError: String#downcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#downcase! case folding case folds special characters" # NotImplementedError: String#downcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#downcase! does not allow invalid options" # NotImplementedError: String#downcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#downcase! full Unicode case mapping adapted for Lithuanian allows Turkic as an extra option (and applies Turkic semantics)" # NotImplementedError: String#downcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#downcase! full Unicode case mapping adapted for Lithuanian currently works the same as full Unicode case mapping" # NotImplementedError: String#downcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#downcase! full Unicode case mapping adapted for Lithuanian does not allow any other additional option" # NotImplementedError: String#downcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#downcase! full Unicode case mapping adapted for Turkic languages allows Lithuanian as an extra option" # NotImplementedError: String#downcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#downcase! full Unicode case mapping adapted for Turkic languages does not allow any other additional option" # NotImplementedError: String#downcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#downcase! full Unicode case mapping adapted for Turkic languages downcases characters according to Turkic semantics" # NotImplementedError: String#downcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#downcase! full Unicode case mapping modifies self in place for all of Unicode with no option" # NotImplementedError: String#downcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#downcase! full Unicode case mapping updates string metadata" # NotImplementedError: String#downcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#downcase! modifies self in place for all of Unicode" # NotImplementedError: String#downcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#downcase! modifies self in place for non-ascii-compatible encodings" # NotImplementedError: String#downcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#downcase! modifies self in place"
+  fails "String#downcase! raises a RuntimeError when self is frozen"
+  fails "String#downcase! returns nil if no modifications were made"
+  fails "String#downcase! sets the result String encoding to the source String encoding" # Expected #<Encoding:UTF-16LE> to be identical to #<Encoding:UTF-8>
+  fails "String#dump untrusts the result if self is untrusted"
+  fails "String#dup copies instance variables" # Strings are immutable, so they can't have ivars
+  fails "String#dup does not copy singleton methods" # TypeError: can't define singleton
+  fails "String#dup does not modify the original string when changing dupped string"
+  fails "String#each_char is unicode aware"
+  fails "String#each_line does not care if the string is modified while substituting"
+  fails "String#each_line raises a TypeError when the separator is a symbol"
+  fails "String#each_line taints substrings that are passed to the block if self is tainted"
+  fails "String#encode! given the xml: :attr option replaces all instances of '&' with '&amp;'" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! given the xml: :attr option replaces all instances of '<' with '&lt;'" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! given the xml: :attr option replaces all instances of '>' with '&gt;'" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! given the xml: :attr option replaces all instances of '\"' with '&quot;'" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! given the xml: :attr option replaces undefined characters with their upper-case hexadecimal numeric character references" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! given the xml: :attr option surrounds the encoded text with double-quotes" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! given the xml: :text option does not replace '\"'" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! given the xml: :text option replaces all instances of '&' with '&amp;'" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! given the xml: :text option replaces all instances of '<' with '&lt;'" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! given the xml: :text option replaces all instances of '>' with '&gt;'" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! given the xml: :text option replaces undefined characters with their upper-case hexadecimal numeric character references" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! raises ArgumentError if the value of the :xml option is not :text or :attr" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! raises a RuntimeError when called on a frozen String when it's a no-op" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! raises a RuntimeError when called on a frozen String" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! when passed no options raises an Encoding::ConverterNotFoundError when no conversion is possible" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! when passed no options returns self for a ASCII-only String when Encoding.default_internal is nil" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! when passed no options returns self when Encoding.default_internal is nil" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! when passed no options transcodes a 7-bit String despite no generic converting being available" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! when passed no options transcodes to Encoding.default_internal when set" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! when passed options calls #to_hash to convert the object" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! when passed options does not process transcoding options if not transcoding" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! when passed options raises an Encoding::ConverterNotFoundError when no conversion is possible despite 'invalid: :replace, undef: :replace'" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! when passed options replaces invalid characters when replacing Emacs-Mule encoded strings" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! when passed options returns self for ASCII-only String when Encoding.default_internal is nil" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! when passed options transcodes to Encoding.default_internal when set" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! when passed to encoding accepts a String argument" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! when passed to encoding calls #to_str to convert the object to an Encoding" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! when passed to encoding raises an Encoding::ConverterNotFoundError for an invalid encoding" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! when passed to encoding raises an Encoding::ConverterNotFoundError when no conversion is possible" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! when passed to encoding returns self" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! when passed to encoding transcodes Japanese multibyte characters" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! when passed to encoding transcodes a 7-bit String despite no generic converting being available" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! when passed to encoding transcodes to the passed encoding" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! when passed to, from calls #to_str to convert the from object to an Encoding" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! when passed to, from returns self" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! when passed to, from transcodes between the encodings ignoring the String encoding" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! when passed to, from, options calls #to_hash to convert the options object" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! when passed to, from, options calls #to_str to convert the from object to an encoding" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! when passed to, from, options calls #to_str to convert the to object to an encoding" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! when passed to, from, options replaces invalid characters in the destination encoding" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! when passed to, from, options replaces undefined characters in the destination encoding" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! when passed to, options calls #to_hash to convert the options object" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! when passed to, options replaces invalid characters in the destination encoding" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#encode! when passed to, options replaces undefined characters in the destination encoding" # NoMethodError: undefined method `default_internal' for Encoding
+  fails "String#gsub with pattern and Hash ignores non-String keys" # Expected "tazoo" == "taboo" to be truthy but was false
+  fails "String#gsub with pattern and Hash taints the result if a hash value is tainted"
+  fails "String#gsub with pattern and Hash taints the result if the original string is tainted"
+  fails "String#gsub with pattern and Hash untrusts the result if a hash value is untrusted"
+  fails "String#gsub with pattern and Hash untrusts the result if the original string is untrusted"
+  fails "String#gsub with pattern and block untrusts the result if the original string or replacement is untrusted"
+  fails "String#gsub with pattern and replacement taints the result if the original string or replacement is tainted"
+  fails "String#gsub with pattern and replacement untrusts the result if the original string or replacement is untrusted"
+  fails "String#gsub! with pattern and Hash coerces the hash values with #to_s"
+  fails "String#gsub! with pattern and Hash doesn't interpolate special sequences like \\1 for the block's return value"
+  fails "String#gsub! with pattern and Hash ignores keys that don't correspond to matches"
+  fails "String#gsub! with pattern and Hash ignores non-String keys"
+  fails "String#gsub! with pattern and Hash keeps tainted state"
+  fails "String#gsub! with pattern and Hash keeps untrusted state"
+  fails "String#gsub! with pattern and Hash replaces self with an empty string if the pattern matches but the hash specifies no replacements"
+  fails "String#gsub! with pattern and Hash returns self with all occurrences of pattern replaced with the value of the corresponding hash key"
+  fails "String#gsub! with pattern and Hash sets $~ to MatchData of last match and nil when there's none for access from outside"
+  fails "String#gsub! with pattern and Hash taints self if a hash value is tainted"
+  fails "String#gsub! with pattern and Hash untrusts self if a hash value is untrusted"
+  fails "String#gsub! with pattern and Hash uses a key's value as many times as needed"
+  fails "String#gsub! with pattern and Hash uses the hash's default value for missing keys"
+  fails "String#gsub! with pattern and Hash uses the hash's value set from default_proc for missing keys"
+  fails "String#gsub! with pattern and block modifies self in place and returns self"
+  fails "String#gsub! with pattern and block raises a RuntimeError when self is frozen"
+  fails "String#gsub! with pattern and block raises an ArgumentError if encoding is not valid"
+  fails "String#gsub! with pattern and block raises an Encoding::CompatibilityError if the encodings are not compatible"
+  fails "String#gsub! with pattern and block replaces the incompatible part properly even if the encodings are not compatible"
+  fails "String#gsub! with pattern and block returns nil if no modifications were made"
+  fails "String#gsub! with pattern and block taints self if block's result is tainted"
+  fails "String#gsub! with pattern and block untrusts self if block's result is untrusted"
+  fails "String#gsub! with pattern and block uses the compatible encoding if they are compatible"
+  fails "String#gsub! with pattern and replacement modifies self in place and returns self"
+  fails "String#gsub! with pattern and replacement modifies self in place with multi-byte characters and returns self"
+  fails "String#gsub! with pattern and replacement raises a RuntimeError when self is frozen"
+  fails "String#gsub! with pattern and replacement returns nil if no modifications were made"
+  fails "String#gsub! with pattern and replacement taints self if replacement is tainted"
+  fails "String#gsub! with pattern and replacement untrusts self if replacement is untrusted"
+  fails "String#gsub! with pattern and without replacement and block returned Enumerator size should return nil"
+  fails "String#gsub! with pattern and without replacement and block returns an enumerator"
+  fails "String#index raises a TypeError if passed a Symbol"
+  fails "String#index with Regexp supports \\G which matches at the given start offset"
+  fails "String#initialize is a private method"
+  fails "String#initialize with an argument carries over the encoding invalidity"
+  fails "String#initialize with an argument does not trust self if other is trusted"
+  fails "String#initialize with an argument does not untaint self if other is untainted"
+  fails "String#initialize with an argument raises a RuntimeError on a frozen instance that is modified"
+  fails "String#initialize with an argument raises a RuntimeError on a frozen instance when self-replacing"
+  fails "String#initialize with an argument raises a TypeError if other can't be converted to string"
+  fails "String#initialize with an argument replaces the content of self with other"
+  fails "String#initialize with an argument replaces the encoding of self with that of other"
+  fails "String#initialize with an argument returns self"
+  fails "String#initialize with an argument taints self if other is tainted"
+  fails "String#initialize with an argument tries to convert other to string using to_str"
+  fails "String#initialize with an argument untrusts self if other is untrusted"
+  fails "String#insert with index, other converts index to an integer using to_int"
+  fails "String#insert with index, other converts other to a string using to_str"
+  fails "String#insert with index, other inserts after the given character on an negative count"
+  fails "String#insert with index, other inserts other before the character at the given index"
+  fails "String#insert with index, other modifies self in place"
+  fails "String#insert with index, other raises a RuntimeError if self is frozen"
+  fails "String#insert with index, other raises a TypeError if other can't be converted to string"
+  fails "String#insert with index, other raises an IndexError if the index is beyond string"
+  fails "String#insert with index, other taints self if string to insert is tainted"
+  fails "String#inspect taints the result if self is tainted"
+  fails "String#inspect untrusts the result if self is untrusted"
+  fails "String#lines does not care if the string is modified while substituting"
+  fails "String#lines raises a TypeError when the separator is a symbol"
+  fails "String#lines taints substrings that are passed to the block if self is tainted"
+  fails "String#ljust with length, padding taints result when self or padstr is tainted"
+  fails "String#ljust with length, padding when padding is tainted and self is untainted returns a tainted string if and only if length is longer than self"
+  fails "String#lstrip taints the result when self is tainted"
+  fails "String#lstrip! modifies self in place and returns self"
+  fails "String#lstrip! raises a RuntimeError on a frozen instance that is modified"
+  fails "String#lstrip! raises a RuntimeError on a frozen instance that would not be modified"
+  fails "String#lstrip! returns nil if no modifications were made"
+  fails "String#lstrip! strips leading \\0" # NotImplementedError: String#lstrip! not supported. Mutable String methods are not supported in Opal.
+  fails "String#match matches \\G at the start of the string"
+  fails "String#next taints the result if self is tainted"
+  fails "String#next! is equivalent to succ, but modifies self in place (still returns self)"
+  fails "String#next! raises a RuntimeError if self is frozen"
+  fails "String#prepend converts the given argument to a String using to_str"
+  fails "String#prepend prepends the given argument to self and returns self"
+  fails "String#prepend prepends the initial value when given arguments contain 2 self"
+  fails "String#prepend raises a RuntimeError when self if frozen"
+  fails "String#prepend raises a RuntimeError when self is frozen" # NoMethodError: undefined method `prepend' for "hello":String
+  fails "String#prepend raises a TypeError if the given argument can't be converted to a String"
+  fails "String#prepend returns self when given no arguments"
+  fails "String#prepend taints self if other is tainted"
+  fails "String#prepend takes multiple arguments"
+  fails "String#prepend works when given a subclass instance"
+  fails "String#replace carries over the encoding invalidity"
+  fails "String#replace does not trust self if other is trusted"
+  fails "String#replace does not untaint self if other is untainted"
+  fails "String#replace raises a RuntimeError on a frozen instance that is modified"
+  fails "String#replace raises a RuntimeError on a frozen instance when self-replacing"
+  fails "String#replace raises a TypeError if other can't be converted to string"
+  fails "String#replace replaces the content of self with other"
+  fails "String#replace replaces the encoding of self with that of other"
+  fails "String#replace returns self"
+  fails "String#replace taints self if other is tainted"
+  fails "String#replace tries to convert other to string using to_str"
+  fails "String#replace untrusts self if other is untrusted"
+  fails "String#reverse taints the result if self is tainted"
+  fails "String#reverse! raises a RuntimeError on a frozen instance that is modified"
+  fails "String#reverse! raises a RuntimeError on a frozen instance that would not be modified"
+  fails "String#reverse! reverses a string with multi byte characters" # NotImplementedError: String#reverse! not supported. Mutable String methods are not supported in Opal.
+  fails "String#reverse! reverses self in place and always returns self"
+  fails "String#rindex with Regexp supports \\G which matches at the given start offset"
+  fails "String#rjust with length, padding taints result when self or padstr is tainted"
+  fails "String#rjust with length, padding when padding is tainted and self is untainted returns a tainted string if and only if length is longer than self"
+  fails "String#rstrip taints the result when self is tainted"
+  fails "String#rstrip! modifies self in place and returns self"
+  fails "String#rstrip! modifies self removing trailing NULL bytes and whitespace"
+  fails "String#rstrip! raises a RuntimeError on a frozen instance that is modified"
+  fails "String#rstrip! raises a RuntimeError on a frozen instance that would not be modified"
+  fails "String#rstrip! returns nil if no modifications were made"
+  fails "String#scan supports \\G which matches the end of the previous match / string start for first match"
+  fails "String#scan taints the results if the Regexp argument is tainted"
+  fails "String#scan taints the results if the String argument is tainted"
+  fails "String#scan taints the results when passed a Regexp argument if self is tainted"
+  fails "String#scan taints the results when passed a String argument if self is tainted"
+  fails "String#scan with pattern and block taints the results if the Regexp argument is tainted"
+  fails "String#scan with pattern and block taints the results if the String argument is tainted"
+  fails "String#scan with pattern and block taints the results when passed a Regexp argument if self is tainted"
+  fails "String#scan with pattern and block taints the results when passed a String argument if self is tainted"
+  fails "String#setbyte allows changing bytes in multi-byte characters"
+  fails "String#setbyte calls #to_int to convert the index"
+  fails "String#setbyte calls to_int to convert the value"
+  fails "String#setbyte can invalidate a String's encoding"
+  fails "String#setbyte changes the byte at the given index to the new byte"
+  fails "String#setbyte does not modify the original string when using String.new"
+  fails "String#setbyte modifies the receiver"
+  fails "String#setbyte raises a RuntimeError if self is frozen"
+  fails "String#setbyte raises a TypeError unless the second argument is an Integer"
+  fails "String#setbyte raises an IndexError if the index is greater than the String bytesize"
+  fails "String#setbyte raises an IndexError if the negative index is greater magnitude than the String bytesize" # NoMethodError: undefined method `setbyte' for "???"
+  fails "String#setbyte regards a negative index as counting from the end of the String"
+  fails "String#setbyte returns an Integer"
+  fails "String#setbyte sets a byte at an index greater than String size"
+  fails "String#slice with Range always taints resulting strings when self is tainted"
+  fails "String#slice with Regexp, index always taints resulting strings when self or regexp is tainted"
+  fails "String#slice with String taints resulting strings when other is tainted"
+  fails "String#slice with Symbol raises TypeError"
+  fails "String#slice with index, length always taints resulting strings when self is tainted"
+  fails "String#slice! Range always taints resulting strings when self is tainted"
+  fails "String#slice! Range calls to_int on range arguments"
+  fails "String#slice! Range deletes and return the substring given by the offsets of the range"
+  fails "String#slice! Range raises a RuntimeError on a frozen instance that is modified"
+  fails "String#slice! Range raises a RuntimeError on a frozen instance that would not be modified"
+  fails "String#slice! Range returns String instances" # NotImplementedError: String#slice! not supported. Mutable String methods are not supported in Opal.
+  fails "String#slice! Range returns nil if the given range is out of self"
+  fails "String#slice! Range returns subclass instances"
+  fails "String#slice! Range returns the substring given by the character offsets of the range" # NotImplementedError: String#slice! not supported. Mutable String methods are not supported in Opal.
+  fails "String#slice! Range works with Range subclasses"
+  fails "String#slice! with Regexp always taints resulting strings when self or regexp is tainted"
+  fails "String#slice! with Regexp deletes and returns the first match from self"
+  fails "String#slice! with Regexp doesn't taint self when regexp is tainted"
+  fails "String#slice! with Regexp raises a RuntimeError on a frozen instance that is modified"
+  fails "String#slice! with Regexp raises a RuntimeError on a frozen instance that would not be modified"
+  fails "String#slice! with Regexp returns String instances" # NotImplementedError: String#slice! not supported. Mutable String methods are not supported in Opal.
+  fails "String#slice! with Regexp returns nil if there was no match"
+  fails "String#slice! with Regexp returns subclass instances"
+  fails "String#slice! with Regexp returns the matching portion of self with a multi byte character" # NotImplementedError: String#slice! not supported. Mutable String methods are not supported in Opal.
+  fails "String#slice! with Regexp sets $~ to MatchData when there is a match and nil when there's none"
+  fails "String#slice! with Regexp, index accepts a Float for capture index"
+  fails "String#slice! with Regexp, index always taints resulting strings when self or regexp is tainted"
+  fails "String#slice! with Regexp, index calls #to_int to convert an Object to capture index"
+  fails "String#slice! with Regexp, index deletes and returns the capture for idx from self"
+  fails "String#slice! with Regexp, index doesn't taint self when regexp is tainted"
+  fails "String#slice! with Regexp, index raises a RuntimeError if self is frozen"
+  fails "String#slice! with Regexp, index returns String instances" # NotImplementedError: String#slice! not supported. Mutable String methods are not supported in Opal.
+  fails "String#slice! with Regexp, index returns nil if there is no capture for idx"
+  fails "String#slice! with Regexp, index returns nil if there was no match"
+  fails "String#slice! with Regexp, index returns subclass instances"
+  fails "String#slice! with Regexp, index returns the encoding aware capture for the given index" # NotImplementedError: String#slice! not supported. Mutable String methods are not supported in Opal.
+  fails "String#slice! with Regexp, index sets $~ to MatchData when there is a match and nil when there's none"
+  fails "String#slice! with String doesn't call to_str on its argument"
+  fails "String#slice! with String doesn't set $~"
+  fails "String#slice! with String raises a RuntimeError if self is frozen"
+  fails "String#slice! with String removes and returns the first occurrence of other_str from self"
+  fails "String#slice! with String returns a subclass instance when given a subclass instance"
+  fails "String#slice! with String returns nil if self does not contain other"
+  fails "String#slice! with String taints resulting strings when other is tainted"
+  fails "String#slice! with index calls to_int on index"
+  fails "String#slice! with index deletes and return the char at the given position"
+  fails "String#slice! with index raises a RuntimeError if self is frozen"
+  fails "String#slice! with index returns nil if idx is outside of self"
+  fails "String#slice! with index returns the character given by the character index" # NotImplementedError: String#slice! not supported. Mutable String methods are not supported in Opal.
+  fails "String#slice! with index, length always taints resulting strings when self is tainted"
+  fails "String#slice! with index, length calls to_int on idx and length"
+  fails "String#slice! with index, length deletes and returns the substring at idx and the given length"
+  fails "String#slice! with index, length raises a RuntimeError if self is frozen"
+  fails "String#slice! with index, length returns String instances" # NotImplementedError: String#slice! not supported. Mutable String methods are not supported in Opal.
+  fails "String#slice! with index, length returns nil if the length is negative"
+  fails "String#slice! with index, length returns subclass instances"
+  fails "String#slice! with index, length returns the substring given by the character offsets" # NotImplementedError: String#slice! not supported. Mutable String methods are not supported in Opal.
+  fails "String#slice! with index, length treats invalid bytes as single bytes" # NoMethodError: undefined method `pack' for [230, 203]:Array
+  fails "String#split with Regexp doesn't taints the resulting strings if the Regexp is tainted"
+  fails "String#split with Regexp taints an empty string if self is tainted"
+  fails "String#split with Regexp taints the resulting strings if self is tainted"
+  fails "String#split with String taints the resulting strings if self is tainted"
+  fails "String#squeeze taints the result when self is tainted"
+  fails "String#squeeze! modifies self in place and returns self"
+  fails "String#squeeze! raises a RuntimeError when self is frozen"
+  fails "String#squeeze! raises an ArgumentError when the parameter is out of sequence"
+  fails "String#squeeze! returns nil if no modifications were made"
+  fails "String#strip taints the result when self is tainted"
+  fails "String#strip! modifies self in place and returns self"
+  fails "String#strip! modifies self removing trailing NULL bytes and whitespace"
+  fails "String#strip! raises a RuntimeError on a frozen instance that is modified"
+  fails "String#strip! raises a RuntimeError on a frozen instance that would not be modified"
+  fails "String#strip! removes leading and trailing NULL bytes and whitespace" # NotImplementedError: String#strip! not supported. Mutable String methods are not supported in Opal.
+  fails "String#strip! returns nil if no modifications where made"
+  fails "String#sub with pattern and Hash ignores non-String keys" # Expected "tazoo" == "taboo" to be truthy but was false
+  fails "String#sub with pattern and Hash taints the result if a hash value is tainted"
+  fails "String#sub with pattern and Hash taints the result if the original string is tainted"
+  fails "String#sub with pattern and Hash untrusts the result if a hash value is untrusted"
+  fails "String#sub with pattern and Hash untrusts the result if the original string is untrusted"
+  fails "String#sub with pattern and block doesn't raise a RuntimeError if the string is modified while substituting" # NotImplementedError: String#[]= not supported. Mutable String methods are not supported in Opal.
+  fails "String#sub with pattern and block taints the result if the original string or replacement is tainted"
+  fails "String#sub with pattern, replacement raises a TypeError when pattern is a Symbol"
+  fails "String#sub with pattern, replacement taints the result if the original string or replacement is tainted"
+  fails "String#sub! with pattern and Hash coerces the hash values with #to_s"
+  fails "String#sub! with pattern and Hash doesn't interpolate special sequences like \\1 for the block's return value"
+  fails "String#sub! with pattern and Hash ignores non-String keys"
+  fails "String#sub! with pattern and Hash keeps tainted state"
+  fails "String#sub! with pattern and Hash keeps untrusted state"
+  fails "String#sub! with pattern and Hash removes keys that don't correspond to matches"
+  fails "String#sub! with pattern and Hash returns self with the first occurrence of pattern replaced with the value of the corresponding hash key"
+  fails "String#sub! with pattern and Hash sets $~ to MatchData of first match and nil when there's none for access from outside"
+  fails "String#sub! with pattern and Hash taints self if a hash value is tainted"
+  fails "String#sub! with pattern and Hash untrusts self if a hash value is untrusted"
+  fails "String#sub! with pattern and Hash uses a key's value only a single time"
+  fails "String#sub! with pattern and Hash uses the hash's default value for missing keys"
+  fails "String#sub! with pattern and Hash uses the hash's value set from default_proc for missing keys"
+  fails "String#sub! with pattern and block modifies self in place and returns self"
+  fails "String#sub! with pattern and block raises a RuntimeError if the string is modified while substituting"
+  fails "String#sub! with pattern and block raises a RuntimeError when self is frozen"
+  fails "String#sub! with pattern and block returns nil if no modifications were made"
+  fails "String#sub! with pattern and block sets $~ for access from the block"
+  fails "String#sub! with pattern and block taints self if block's result is tainted"
+  fails "String#sub! with pattern and without replacement and block raises a ArgumentError"
+  fails "String#sub! with pattern, replacement modifies self in place and returns self"
+  fails "String#sub! with pattern, replacement raises a RuntimeError when self is frozen"
+  fails "String#sub! with pattern, replacement returns nil if no modifications were made"
+  fails "String#sub! with pattern, replacement taints self if replacement is tainted"
+  fails "String#succ taints the result if self is tainted"
+  fails "String#succ! is equivalent to succ, but modifies self in place (still returns self)"
+  fails "String#succ! raises a RuntimeError if self is frozen"
+  fails "String#swapcase taints resulting string when self is tainted"
+  fails "String#swapcase! does not allow invalid options" # NotImplementedError: String#swapcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#swapcase! does not allow the :fold option for upcasing" # NotImplementedError: String#swapcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#swapcase! full Unicode case mapping adapted for Lithuanian allows Turkic as an extra option (and applies Turkic semantics)" # NotImplementedError: String#swapcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#swapcase! full Unicode case mapping adapted for Lithuanian currently works the same as full Unicode case mapping" # NotImplementedError: String#swapcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#swapcase! full Unicode case mapping adapted for Lithuanian does not allow any other additional option" # NotImplementedError: String#swapcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#swapcase! full Unicode case mapping modifies self in place for all of Unicode with no option" # NotImplementedError: String#swapcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#swapcase! full Unicode case mapping updates string metadata" # NotImplementedError: String#swapcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#swapcase! full Unicode case mapping works for non-ascii-compatible encodings" # NotImplementedError: String#swapcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#swapcase! modifies self in place for ASCII-only case mapping does not swapcase non-ASCII characters" # NotImplementedError: String#swapcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#swapcase! modifies self in place for ASCII-only case mapping works for non-ascii-compatible encodings" # NotImplementedError: String#swapcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#swapcase! modifies self in place for all of Unicode" # NotImplementedError: String#swapcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#swapcase! modifies self in place for full Unicode case mapping adapted for Turkic languages allows Lithuanian as an extra option" # NotImplementedError: String#swapcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#swapcase! modifies self in place for full Unicode case mapping adapted for Turkic languages does not allow any other additional option" # NotImplementedError: String#swapcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#swapcase! modifies self in place for full Unicode case mapping adapted for Turkic languages swaps case of ASCII characters according to Turkic semantics" # NotImplementedError: String#swapcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#swapcase! modifies self in place for non-ascii-compatible encodings" # NotImplementedError: String#swapcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#swapcase! modifies self in place"
+  fails "String#swapcase! raises a RuntimeError when self is frozen"
+  fails "String#swapcase! returns nil if no modifications were made"
+  fails "String#to_i with bases parses a String in base 10" # Expected "1.2345678901234567e+99" == "1234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890" to be truthy but was false
+  fails "String#to_i with bases parses a String in base 11" # Expected "1234567890a1234720000000000000000000000000000000000000000000000000000000000000000000000000000000000" == "1234567890a1234567890a1234567890a1234567890a1234567890a1234567890a1234567890a1234567890a1234567890a" to be truthy but was false
+  fails "String#to_i with bases parses a String in base 12" # Expected "1234567890ab121800000000000000000000000000000000000000000000000000000000000000000000000000000000" == "1234567890ab1234567890ab1234567890ab1234567890ab1234567890ab1234567890ab1234567890ab1234567890ab" to be truthy but was false
+  fails "String#to_i with bases parses a String in base 13" # Expected "1234567890abc110000000000000000000000000000000000000000000000000000000000000000000000000000" == "1234567890abc1234567890abc1234567890abc1234567890abc1234567890abc1234567890abc1234567890abc" to be truthy but was false
+  fails "String#to_i with bases parses a String in base 14" # Expected "1234567890abcdc00000000000000000000000000000000000000000000000000000000000000000000000000000000000" == "1234567890abcd1234567890abcd1234567890abcd1234567890abcd1234567890abcd1234567890abcd1234567890abcd" to be truthy but was false
+  fails "String#to_i with bases parses a String in base 15" # Expected "1234567890abcd9000000000000000000000000000000000000000000000000000000000000000000000000000" == "1234567890abcde1234567890abcde1234567890abcde1234567890abcde1234567890abcde1234567890abcde" to be truthy but was false
+  fails "String#to_i with bases parses a String in base 16" # Expected "1234567890abce0000000000000000000000000000000000000000000000000000000000000000000000000000000000" == "1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef" to be truthy but was false
+  fails "String#to_i with bases parses a String in base 17" # Expected "1234567890abcg00000000000000000000000000000000000000000000000000000000000000000000000" == "1234567890abcdefg1234567890abcdefg1234567890abcdefg1234567890abcdefg1234567890abcdefg" to be truthy but was false
+  fails "String#to_i with bases parses a String in base 18" # Expected "1234567890abc40000000000000000000000000000000000000000000000000000000000000000000000000000" == "1234567890abcdefgh1234567890abcdefgh1234567890abcdefgh1234567890abcdefgh1234567890abcdefgh" to be truthy but was false
+  fails "String#to_i with bases parses a String in base 19" # Expected "1234567890abcc000000000000000000000000000000000000000000000000000000000000000000000000000000000" == "1234567890abcdefghi1234567890abcdefghi1234567890abcdefghi1234567890abcdefghi1234567890abcdefghi" to be truthy but was false
+  fails "String#to_i with bases parses a String in base 2" # Expected "1010101010101010101010101010101010101010101010101010100000000000000000000000000000000000000000000000" == "1010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010" to be truthy but was false
+  fails "String#to_i with bases parses a String in base 20" # Expected "1234567890abcg00000000000000000000000000000000000000000000000000000000000000000000000000000000000000" == "1234567890abcdefghij1234567890abcdefghij1234567890abcdefghij1234567890abcdefghij1234567890abcdefghij" to be truthy but was false
+  fails "String#to_i with bases parses a String in base 21" # Expected "1234567890abad0000000000000000000000000000000000000000000000000000000000000000000000" == "1234567890abcdefghijk1234567890abcdefghijk1234567890abcdefghijk1234567890abcdefghijk" to be truthy but was false
+  fails "String#to_i with bases parses a String in base 22" # Expected "1234567890abg000000000000000000000000000000000000000000000000000000000000000000000000000" == "1234567890abcdefghijkl1234567890abcdefghijkl1234567890abcdefghijkl1234567890abcdefghijkl" to be truthy but was false
+  fails "String#to_i with bases parses a String in base 23" # Expected "1234567890abk0000000000000000000000000000000000000000000000000000000000000000000000000000000" == "1234567890abcdefghijklm1234567890abcdefghijklm1234567890abcdefghijklm1234567890abcdefghijklm" to be truthy but was false
+  fails "String#to_i with bases parses a String in base 24" # Expected "1234567890acg00000000000000000000000000000000000000000000000000000000000000000000000000000000000" == "1234567890abcdefghijklmn1234567890abcdefghijklmn1234567890abcdefghijklmn1234567890abcdefghijklmn" to be truthy but was false
+  fails "String#to_i with bases parses a String in base 25" # Expected "1234567890ae3000000000000000000000000000000000000000000000000000000000000000000000000000000000000000" == "1234567890abcdefghijklmno1234567890abcdefghijklmno1234567890abcdefghijklmno1234567890abcdefghijklmno" to be truthy but was false
+  fails "String#to_i with bases parses a String in base 26" # Expected "1234567890aba00000000000000000000000000000000000000000000000000000000000000000" == "1234567890abcdefghijklmnop1234567890abcdefghijklmnop1234567890abcdefghijklmnop" to be truthy but was false
+  fails "String#to_i with bases parses a String in base 27" # Expected "1234567890aen00000000000000000000000000000000000000000000000000000000000000000000" == "1234567890abcdefghijklmnopq1234567890abcdefghijklmnopq1234567890abcdefghijklmnopq" to be truthy but was false
+  fails "String#to_i with bases parses a String in base 28" # Expected "1234567890a6o00000000000000000000000000000000000000000000000000000000000000000000000" == "1234567890abcdefghijklmnopqr1234567890abcdefghijklmnopqr1234567890abcdefghijklmnopqr" to be truthy but was false
+  fails "String#to_i with bases parses a String in base 29" # Expected "1234567890ab000000000000000000000000000000000000000000000000000000000000000000000000000" == "1234567890abcdefghijklmnopqrs1234567890abcdefghijklmnopqrs1234567890abcdefghijklmnopqrs" to be truthy but was false
+  fails "String#to_i with bases parses a String in base 3" # Expected "120120120120120120120120120120121200000000000000000000000000000000000000000000000000000000000000000" == "120120120120120120120120120120120120120120120120120120120120120120120120120120120120120120120120120" to be truthy but was false
+  fails "String#to_i with bases parses a String in base 30" # Expected "1234567890a8000000000000000000000000000000000000000000000000000000000000000000000000000000" == "1234567890abcdefghijklmnopqrst1234567890abcdefghijklmnopqrst1234567890abcdefghijklmnopqrst" to be truthy but was false
+  fails "String#to_i with bases parses a String in base 31" # Expected "1234567890a7000000000000000000000000000000000000000000000000000000000000000000000000000000000" == "1234567890abcdefghijklmnopqrstu1234567890abcdefghijklmnopqrstu1234567890abcdefghijklmnopqrstu" to be truthy but was false
+  fails "String#to_i with bases parses a String in base 32" # Expected "1234567890a8000000000000000000000000000000000000000000000000000000000000000000000000000000000000" == "1234567890abcdefghijklmnopqrstuv1234567890abcdefghijklmnopqrstuv1234567890abcdefghijklmnopqrstuv" to be truthy but was false
+  fails "String#to_i with bases parses a String in base 33" # Expected "1234567890ah000000000000000000000000000000000000000000000000000000000000000000000000000000000000000" == "1234567890abcdefghijklmnopqrstuvw1234567890abcdefghijklmnopqrstuvw1234567890abcdefghijklmnopqrstuvw" to be truthy but was false
+  fails "String#to_i with bases parses a String in base 34" # Expected "1234567890a400000000000000000000000000000000000000000000000000000000" == "1234567890abcdefghijklmnopqrstuvwx1234567890abcdefghijklmnopqrstuvwx" to be truthy but was false
+  fails "String#to_i with bases parses a String in base 35" # Expected "12345678908x0000000000000000000000000000000000000000000000000000000000" == "1234567890abcdefghijklmnopqrstuvwxy1234567890abcdefghijklmnopqrstuvwxy" to be truthy but was false
+  fails "String#to_i with bases parses a String in base 36" # Expected "1234567890ao000000000000000000000000000000000000000000000000000000000000" == "1234567890abcdefghijklmnopqrstuvwxyz1234567890abcdefghijklmnopqrstuvwxyz" to be truthy but was false
+  fails "String#to_i with bases parses a String in base 4" # Expected "1230123012301230123012301230000000000000000000000000000000000000000000000000000000000000000000000000" == "1230123012301230123012301230123012301230123012301230123012301230123012301230123012301230123012301230" to be truthy but was false
+  fails "String#to_i with bases parses a String in base 5" # Expected "1234012340123401234012100000000000000000000000000000000000000000000000000000000000000000000000000000" == "1234012340123401234012340123401234012340123401234012340123401234012340123401234012340123401234012340" to be truthy but was false
+  fails "String#to_i with bases parses a String in base 6" # Expected "123450123450123450122400000000000000000000000000000000000000000000000000000000000000000000000000" == "123450123450123450123450123450123450123450123450123450123450123450123450123450123450123450123450" to be truthy but was false
+  fails "String#to_i with bases parses a String in base 7" # Expected "12345601234560123501000000000000000000000000000000000000000000000000000000000000000000000000000000" == "12345601234560123456012345601234560123456012345601234560123456012345601234560123456012345601234560" to be truthy but was false
+  fails "String#to_i with bases parses a String in base 8" # Expected "123456701234567012400000000000000000000000000000000000000000000000000000000000000000000000000000" == "123456701234567012345670123456701234567012345670123456701234567012345670123456701234567012345670" to be truthy but was false
+  fails "String#to_i with bases parses a String in base 9" # Expected "123456780123456780000000000000000000000000000000000000000000000000000000000000000000000000000000000" == "123456780123456780123456780123456780123456780123456780123456780123456780123456780123456780123456780" to be truthy but was false  
+  fails "String#to_s taints the result when self is tainted"
+  fails "String#to_str taints the result when self is tainted"
+  fails "String#tr taints the result when self is tainted"
+  fails "String#tr! does not modify self if from_str is empty"
+  fails "String#tr! modifies self in place"
+  fails "String#tr! raises a RuntimeError if self is frozen"
+  fails "String#tr! returns nil if no modification was made"
+  fails "String#tr_s taints the result when self is tainted"
+  fails "String#tr_s! does not modify self if from_str is empty"
+  fails "String#tr_s! modifies self in place"
+  fails "String#tr_s! raises a RuntimeError if self is frozen"
+  fails "String#tr_s! returns nil if no modification was made"
+  fails "String#unicode_normalize! modifies original string (nfc)"
+  fails "String#unicode_normalize! modifies self in place (nfd)"
+  fails "String#unicode_normalize! modifies self in place (nfkc)"
+  fails "String#unicode_normalize! modifies self in place (nfkd)"
+  fails "String#unicode_normalize! normalizes code points and modifies the receiving string"
+  fails "String#unicode_normalize! raises an ArgumentError if the specified form is invalid"
+  fails "String#unicode_normalize! raises an Encoding::CompatibilityError if the string is not in an unicode encoding"
+  fails "String#upcase taints result when self is tainted"
+  fails "String#upcase! does not allow invalid options" # NotImplementedError: String#upcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#upcase! does not allow the :fold option for upcasing" # NotImplementedError: String#upcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#upcase! full Unicode case mapping modifies self in place for all of Unicode with no option" # NotImplementedError: String#upcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#upcase! full Unicode case mapping updates string metadata for self" # NotImplementedError: String#upcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#upcase! full Unicode case mapping works for non-ascii-compatible encodings" # NotImplementedError: String#upcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#upcase! modifies self in place for ASCII-only case mapping does not upcase non-ASCII characters" # NotImplementedError: String#upcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#upcase! modifies self in place for ASCII-only case mapping works for non-ascii-compatible encodings" # NotImplementedError: String#upcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#upcase! modifies self in place for all of Unicode" # NotImplementedError: String#upcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#upcase! modifies self in place for full Unicode case mapping adapted for Lithuanian allows Turkic as an extra option (and applies Turkic semantics)" # NotImplementedError: String#upcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#upcase! modifies self in place for full Unicode case mapping adapted for Lithuanian currently works the same as full Unicode case mapping" # NotImplementedError: String#upcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#upcase! modifies self in place for full Unicode case mapping adapted for Lithuanian does not allow any other additional option" # NotImplementedError: String#upcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#upcase! modifies self in place for full Unicode case mapping adapted for Turkic languages allows Lithuanian as an extra option" # NotImplementedError: String#upcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#upcase! modifies self in place for full Unicode case mapping adapted for Turkic languages does not allow any other additional option" # NotImplementedError: String#upcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#upcase! modifies self in place for full Unicode case mapping adapted for Turkic languages upcases ASCII characters according to Turkic semantics" # NotImplementedError: String#upcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#upcase! modifies self in place for non-ascii-compatible encodings" # NotImplementedError: String#upcase! not supported. Mutable String methods are not supported in Opal.
+  fails "String#upcase! modifies self in place"
+  fails "String#upcase! raises a RuntimeError when self is frozen"
+  fails "String#upcase! returns nil if no modifications were made"
+  fails "String#upto does not work with symbols"
+  fails "String.allocate returns a binary String"
+  fails "String.allocate returns a fully-formed String"
+  fails "String.new returns a binary String"
+  fails "String.new returns a fully-formed String"
+  fails "String.new returns a new string given a string argument"
+end
diff --git a/spec/filters/unsupported/struct.rb b/spec/filters/unsupported/struct.rb
new file mode 100644
index 00000000..be18f966
--- /dev/null
+++ b/spec/filters/unsupported/struct.rb
@@ -0,0 +1,7 @@
+# NOTE: run bin/format-filters after changing this file
+opal_unsupported_filter "Struct" do
+  fails "Struct#initialize is private"
+  fails "Struct.new does not create a constant with symbol as first argument"
+  fails "Struct.new fails with invalid constant name as first argument" # this invalid name gets interpreted as a struct member
+  fails "Struct.new raises a TypeError if object is not a Symbol"
+end
diff --git a/spec/filters/unsupported/symbol.rb b/spec/filters/unsupported/symbol.rb
new file mode 100644
index 00000000..cfc2af84
--- /dev/null
+++ b/spec/filters/unsupported/symbol.rb
@@ -0,0 +1,21 @@
+# NOTE: run bin/format-filters after changing this file
+opal_unsupported_filter "Symbol" do
+  fails "A Symbol literal can be an empty string"
+  fails "A Symbol literal can be created by the %s-delimited expression"
+  fails "A Symbol literal can contain null in the string"
+  fails "A Symbol literal is a ':' followed by a single- or double-quoted string that may contain otherwise invalid characters"
+  fails "A Symbol literal is a ':' followed by any number of valid characters"
+  fails "A Symbol literal is converted to a literal, unquoted representation if the symbol contains only valid characters"
+  fails "Fixnum#coerce raises a TypeError when given an Object that does not respond to #to_f"
+  fails "Hash literal raises a TypeError if any splatted elements keys are not symbols"
+  fails "Marshal.dump with a Symbol dumps a Symbol"
+  fails "Marshal.dump with a Symbol dumps a big Symbol"
+  fails "Marshal.dump with a Symbol dumps a binary encoded Symbol"
+  fails "Marshal.dump with a Symbol dumps an encoded Symbol"
+  fails "Marshal.dump with an Array dumps a non-empty Array" # this particular spec dumps a Symbol, spec with String instead of Symbol is in spec/opal/
+  fails "Module#const_get raises a NameError if a Symbol has a toplevel scope qualifier"
+  fails "Module#const_get raises a NameError if a Symbol is a scoped constant name"
+  fails "Numeric#coerce raises a TypeError when passed a Symbol"
+  fails "Symbol#to_proc produces a proc that always returns [[:rest]] for #parameters"
+  fails "The throw keyword does not convert strings to a symbol"
+end
diff --git a/spec/filters/unsupported/taint.rb b/spec/filters/unsupported/taint.rb
new file mode 100644
index 00000000..d54770b8
--- /dev/null
+++ b/spec/filters/unsupported/taint.rb
@@ -0,0 +1,162 @@
+# NOTE: run bin/format-filters after changing this file
+opal_unsupported_filter "taint" do
+  fails "Array#pack with format 'A' returns a tainted string when a pack argument is tainted"
+  fails "Array#pack with format 'A' returns a tainted string when an empty format is tainted"
+  fails "Array#pack with format 'A' returns a tainted string when the format is tainted"
+  fails "Array#pack with format 'A' returns a trusted string when the array is untrusted"
+  fails "Array#pack with format 'A' returns a untrusted string when a pack argument is untrusted"
+  fails "Array#pack with format 'A' returns a untrusted string when the empty format is untrusted"
+  fails "Array#pack with format 'A' returns a untrusted string when the format is untrusted"
+  fails "Array#pack with format 'A' taints the output string if the format string is tainted"
+  fails "Array#pack with format 'C' taints the output string if the format string is tainted"
+  fails "Array#pack with format 'L' taints the output string if the format string is tainted"
+  fails "Array#pack with format 'U' taints the output string if the format string is tainted"
+  fails "Array#pack with format 'a' returns a tainted string when a pack argument is tainted"
+  fails "Array#pack with format 'a' returns a tainted string when an empty format is tainted"
+  fails "Array#pack with format 'a' returns a tainted string when the format is tainted"
+  fails "Array#pack with format 'a' returns a trusted string when the array is untrusted"
+  fails "Array#pack with format 'a' returns a untrusted string when a pack argument is untrusted"
+  fails "Array#pack with format 'a' returns a untrusted string when the empty format is untrusted"
+  fails "Array#pack with format 'a' returns a untrusted string when the format is untrusted"
+  fails "Array#pack with format 'a' taints the output string if the format string is tainted"
+  fails "Array#pack with format 'c' taints the output string if the format string is tainted"
+  fails "Array#pack with format 'l' taints the output string if the format string is tainted"
+  fails "Array#pack with format 'u' does not return a tainted string when the array is tainted" # RuntimeError: Unsupported pack directive "u" (no chunk reader defined)
+  fails "Array#pack with format 'u' returns a tainted string when a pack argument is tainted" # RuntimeError: Unsupported pack directive "u" (no chunk reader defined)
+  fails "Array#pack with format 'u' returns a tainted string when an empty format is tainted" # Expected false to be true
+  fails "Array#pack with format 'u' returns a tainted string when the format is tainted" # RuntimeError: Unsupported pack directive "u" (no chunk reader defined)
+  fails "Array#pack with format 'u' returns a trusted string when the array is untrusted" # NoMethodError: undefined method `untrust' for ["abcd", 32]
+  fails "Array#pack with format 'u' returns a untrusted string when a pack argument is untrusted" # NoMethodError: undefined method `untrust' for "abcd"
+  fails "Array#pack with format 'u' returns a untrusted string when the empty format is untrusted" # NoMethodError: undefined method `untrust' for ""
+  fails "Array#pack with format 'u' returns a untrusted string when the format is untrusted" # NoMethodError: undefined method `untrust' for "u3C"
+  fails "Array#pack with format 'u' taints the output string if the format string is tainted"
+  fails "Hash#reject with extra state does not taint the resulting hash"
+  fails "Kernel#inspect returns a tainted string if self is tainted"
+  fails "Module#append_features copies own tainted status to the given module"
+  fails "Module#append_features copies own untrusted status to the given module"
+  fails "Module#extend_object does not copy own tainted status to the given object"
+  fails "Module#extend_object does not copy own untrusted status to the given object"
+  fails "Module#prepend_features copies own tainted status to the given module"
+  fails "Module#prepend_features copies own untrusted status to the given module"
+  fails "String#% doesn't taint the result for %E when argument is tainted"
+  fails "String#% doesn't taint the result for %G when argument is tainted"
+  fails "String#% doesn't taint the result for %e when argument is tainted"
+  fails "String#% doesn't taint the result for %f when argument is tainted"
+  fails "String#% doesn't taint the result for %g when argument is tainted"
+  fails "String#[] with Regexp always taints resulting strings when self or regexp is tainted"
+  fails "String#[] with Regexp returns an untrusted string if the regexp is untrusted"
+  fails "String#byteslice with Range always taints resulting strings when self is tainted"
+  fails "String#byteslice with index, length always taints resulting strings when self is tainted"
+  fails "String#delete_prefix taints resulting strings when other is tainted" # NoMethodError: undefined method `delete_prefix' for "hello":String
+  fails "String#delete_suffix taints resulting strings when other is tainted" # NoMethodError: undefined method `delete_suffix' for "hello":String
+  fails "String#dump taints the result if self is tainted"
+  fails "String#slice with Regexp always taints resulting strings when self or regexp is tainted"
+  fails "String#slice with Regexp returns an untrusted string if the regexp is untrusted"
+  fails "String#unpack with format 'A' does not untrust returned arrays if given a untrusted format string" # NoMethodError: undefined method `untrust' for "A2"
+  fails "String#unpack with format 'A' does not untrust returned arrays if given a untrusted packed string" # NoMethodError: undefined method `untrust' for ""
+  fails "String#unpack with format 'A' does not untrust returned arrays if given an trusted packed string" # NoMethodError: undefined method `untrusted?' for [""]
+  fails "String#unpack with format 'A' does not untrust returned arrays if given an untrusted format string" # NoMethodError: undefined method `untrusted?' for [""]
+  fails "String#unpack with format 'A' does not untrust returned strings if given a untrusted format string" # NoMethodError: undefined method `untrust' for "A2"
+  fails "String#unpack with format 'A' does not untrust returned strings if given an trusted packed string" # NoMethodError: undefined method `untrusted?' for ""
+  fails "String#unpack with format 'A' does not untrust returned strings if given an untainted format string" # NoMethodError: undefined method `untrusted?' for ""
+  fails "String#unpack with format 'A' taints returned strings if given a tainted packed string" # Expected false to be true
+  fails "String#unpack with format 'A' untrusts returned strings if given a untrusted packed string" # NoMethodError: undefined method `untrust' for ""
+  fails "String#unpack with format 'B' does not untrust returned arrays if given a untrusted format string" # NoMethodError: undefined method `untrust' for "B2"
+  fails "String#unpack with format 'B' does not untrust returned arrays if given a untrusted packed string" # NoMethodError: undefined method `untrust' for ""
+  fails "String#unpack with format 'B' does not untrust returned arrays if given an trusted packed string" # NoMethodError: undefined method `untrusted?' for [""]
+  fails "String#unpack with format 'B' does not untrust returned arrays if given an untrusted format string" # NoMethodError: undefined method `untrusted?' for [""]
+  fails "String#unpack with format 'B' does not untrust returned strings if given a untrusted format string" # NoMethodError: undefined method `untrust' for "B2"
+  fails "String#unpack with format 'B' does not untrust returned strings if given an trusted packed string" # NoMethodError: undefined method `untrusted?' for ""
+  fails "String#unpack with format 'B' does not untrust returned strings if given an untainted format string" # NoMethodError: undefined method `untrusted?' for ""
+  fails "String#unpack with format 'B' taints returned strings if given a tainted packed string" # Expected false to be true
+  fails "String#unpack with format 'B' untrusts returned strings if given a untrusted packed string" # NoMethodError: undefined method `untrust' for ""
+  fails "String#unpack with format 'H' does not untrust returned arrays if given a untrusted format string" # NoMethodError: undefined method `untrust' for "H2"
+  fails "String#unpack with format 'H' does not untrust returned arrays if given a untrusted packed string" # NoMethodError: undefined method `untrust' for ""
+  fails "String#unpack with format 'H' does not untrust returned arrays if given an trusted packed string" # NoMethodError: undefined method `untrusted?' for [""]
+  fails "String#unpack with format 'H' does not untrust returned arrays if given an untrusted format string" # NoMethodError: undefined method `untrusted?' for [""]
+  fails "String#unpack with format 'H' does not untrust returned strings if given a untrusted format string" # NoMethodError: undefined method `untrust' for "H2"
+  fails "String#unpack with format 'H' does not untrust returned strings if given an trusted packed string" # NoMethodError: undefined method `untrusted?' for ""
+  fails "String#unpack with format 'H' does not untrust returned strings if given an untainted format string" # NoMethodError: undefined method `untrusted?' for ""
+  fails "String#unpack with format 'H' taints returned strings if given a tainted packed string" # Expected false to be true
+  fails "String#unpack with format 'H' untrusts returned strings if given a untrusted packed string" # NoMethodError: undefined method `untrust' for ""
+  fails "String#unpack with format 'M' does not untrust returned arrays if given a untrusted format string" # NoMethodError: undefined method `untrust' for "M2"
+  fails "String#unpack with format 'M' does not untrust returned arrays if given a untrusted packed string" # NoMethodError: undefined method `untrust' for ""
+  fails "String#unpack with format 'M' does not untrust returned arrays if given an trusted packed string" # NoMethodError: undefined method `untrusted?' for [""]
+  fails "String#unpack with format 'M' does not untrust returned arrays if given an untrusted format string" # NoMethodError: undefined method `untrusted?' for [""]
+  fails "String#unpack with format 'M' does not untrust returned strings if given a untrusted format string" # NoMethodError: undefined method `untrust' for "M2"
+  fails "String#unpack with format 'M' does not untrust returned strings if given an trusted packed string" # NoMethodError: undefined method `untrusted?' for ""
+  fails "String#unpack with format 'M' does not untrust returned strings if given an untainted format string" # NoMethodError: undefined method `untrusted?' for ""
+  fails "String#unpack with format 'M' taints returned strings if given a tainted packed string" # Expected false to be true
+  fails "String#unpack with format 'M' untrusts returned strings if given a untrusted packed string" # NoMethodError: undefined method `untrust' for ""
+  fails "String#unpack with format 'U' does not untrust returned arrays if given a untrusted format string" # NoMethodError: undefined method `untrust' for "U2"
+  fails "String#unpack with format 'U' does not untrust returned arrays if given a untrusted packed string" # NoMethodError: undefined method `untrust' for ""
+  fails "String#unpack with format 'U' does not untrust returned arrays if given an trusted packed string" # Exception: Cannot read property '$__id__' of undefined
+  fails "String#unpack with format 'U' does not untrust returned arrays if given an untrusted format string" # Exception: Cannot read property '$__id__' of undefined
+  fails "String#unpack with format 'U' does not untrust returned strings if given a untrusted format string" # NoMethodError: undefined method `untrust' for "U2"
+  fails "String#unpack with format 'U' does not untrust returned strings if given an trusted packed string" # NoMethodError: undefined method `untrusted?' for nil
+  fails "String#unpack with format 'U' does not untrust returned strings if given an untainted format string" # NoMethodError: undefined method `untrusted?' for nil
+  fails "String#unpack with format 'U' taints returned strings if given a tainted packed string" # Expected false to be true
+  fails "String#unpack with format 'U' untrusts returned strings if given a untrusted packed string" # NoMethodError: undefined method `untrust' for ""
+  fails "String#unpack with format 'Z' does not untrust returned arrays if given a untrusted format string" # NoMethodError: undefined method `untrust' for "Z2"
+  fails "String#unpack with format 'Z' does not untrust returned arrays if given a untrusted packed string" # NoMethodError: undefined method `untrust' for ""
+  fails "String#unpack with format 'Z' does not untrust returned arrays if given an trusted packed string" # NoMethodError: undefined method `untrusted?' for [""]
+  fails "String#unpack with format 'Z' does not untrust returned arrays if given an untrusted format string" # NoMethodError: undefined method `untrusted?' for [""]
+  fails "String#unpack with format 'Z' does not untrust returned strings if given a untrusted format string" # NoMethodError: undefined method `untrust' for "Z2"
+  fails "String#unpack with format 'Z' does not untrust returned strings if given an trusted packed string" # NoMethodError: undefined method `untrusted?' for ""
+  fails "String#unpack with format 'Z' does not untrust returned strings if given an untainted format string" # NoMethodError: undefined method `untrusted?' for ""
+  fails "String#unpack with format 'Z' taints returned strings if given a tainted packed string" # Expected false to be true
+  fails "String#unpack with format 'Z' untrusts returned strings if given a untrusted packed string" # NoMethodError: undefined method `untrust' for ""
+  fails "String#unpack with format 'a' does not untrust returned arrays if given a untrusted format string" # NoMethodError: undefined method `untrust' for "a2"
+  fails "String#unpack with format 'a' does not untrust returned arrays if given a untrusted packed string" # NoMethodError: undefined method `untrust' for ""
+  fails "String#unpack with format 'a' does not untrust returned arrays if given an trusted packed string" # NoMethodError: undefined method `untrusted?' for [""]
+  fails "String#unpack with format 'a' does not untrust returned arrays if given an untrusted format string" # NoMethodError: undefined method `untrusted?' for [""]
+  fails "String#unpack with format 'a' does not untrust returned strings if given a untrusted format string" # NoMethodError: undefined method `untrust' for "a2"
+  fails "String#unpack with format 'a' does not untrust returned strings if given an trusted packed string" # NoMethodError: undefined method `untrusted?' for ""
+  fails "String#unpack with format 'a' does not untrust returned strings if given an untainted format string" # NoMethodError: undefined method `untrusted?' for ""
+  fails "String#unpack with format 'a' taints returned strings if given a tainted packed string" # Expected false to be true
+  fails "String#unpack with format 'a' untrusts returned strings if given a untrusted packed string" # NoMethodError: undefined method `untrust' for ""
+  fails "String#unpack with format 'b' does not untrust returned arrays if given a untrusted format string" # NoMethodError: undefined method `untrust' for "b2"
+  fails "String#unpack with format 'b' does not untrust returned arrays if given a untrusted packed string" # NoMethodError: undefined method `untrust' for ""
+  fails "String#unpack with format 'b' does not untrust returned arrays if given an trusted packed string" # NoMethodError: undefined method `untrusted?' for [""]
+  fails "String#unpack with format 'b' does not untrust returned arrays if given an untrusted format string" # NoMethodError: undefined method `untrusted?' for [""]
+  fails "String#unpack with format 'b' does not untrust returned strings if given a untrusted format string" # NoMethodError: undefined method `untrust' for "b2"
+  fails "String#unpack with format 'b' does not untrust returned strings if given an trusted packed string" # NoMethodError: undefined method `untrusted?' for ""
+  fails "String#unpack with format 'b' does not untrust returned strings if given an untainted format string" # NoMethodError: undefined method `untrusted?' for ""
+  fails "String#unpack with format 'b' taints returned strings if given a tainted packed string" # Expected false to be true
+  fails "String#unpack with format 'b' untrusts returned strings if given a untrusted packed string" # NoMethodError: undefined method `untrust' for ""
+  fails "String#unpack with format 'h' does not untrust returned arrays if given a untrusted format string" # NoMethodError: undefined method `untrust' for "h2"
+  fails "String#unpack with format 'h' does not untrust returned arrays if given a untrusted packed string" # NoMethodError: undefined method `untrust' for ""
+  fails "String#unpack with format 'h' does not untrust returned arrays if given an trusted packed string" # NoMethodError: undefined method `untrusted?' for [""]
+  fails "String#unpack with format 'h' does not untrust returned arrays if given an untrusted format string" # NoMethodError: undefined method `untrusted?' for [""]
+  fails "String#unpack with format 'h' does not untrust returned strings if given a untrusted format string" # NoMethodError: undefined method `untrust' for "h2"
+  fails "String#unpack with format 'h' does not untrust returned strings if given an trusted packed string" # NoMethodError: undefined method `untrusted?' for ""
+  fails "String#unpack with format 'h' does not untrust returned strings if given an untainted format string" # NoMethodError: undefined method `untrusted?' for ""
+  fails "String#unpack with format 'h' taints returned strings if given a tainted packed string" # Expected false to be true
+  fails "String#unpack with format 'h' untrusts returned strings if given a untrusted packed string" # NoMethodError: undefined method `untrust' for ""
+  fails "String#unpack with format 'm' does not untrust returned arrays if given a untrusted format string" # NoMethodError: undefined method `untrust' for "m2"
+  fails "String#unpack with format 'm' does not untrust returned arrays if given a untrusted packed string" # NoMethodError: undefined method `untrust' for ""
+  fails "String#unpack with format 'm' does not untrust returned arrays if given an trusted packed string" # NoMethodError: undefined method `untrusted?' for [""]
+  fails "String#unpack with format 'm' does not untrust returned arrays if given an untrusted format string" # NoMethodError: undefined method `untrusted?' for [""]
+  fails "String#unpack with format 'm' does not untrust returned strings if given a untrusted format string" # NoMethodError: undefined method `untrust' for "m2"
+  fails "String#unpack with format 'm' does not untrust returned strings if given an trusted packed string" # NoMethodError: undefined method `untrusted?' for ""
+  fails "String#unpack with format 'm' does not untrust returned strings if given an untainted format string" # NoMethodError: undefined method `untrusted?' for ""
+  fails "String#unpack with format 'm' taints returned strings if given a tainted packed string" # Expected false to be true
+  fails "String#unpack with format 'm' untrusts returned strings if given a untrusted packed string" # NoMethodError: undefined method `untrust' for ""
+  fails "String#unpack with format 'u' does not untrust returned arrays if given a untrusted format string" # NoMethodError: undefined method `untrust' for "u2"
+  fails "String#unpack with format 'u' does not untrust returned arrays if given a untrusted packed string" # NoMethodError: undefined method `untrust' for ""
+  fails "String#unpack with format 'u' does not untrust returned arrays if given an trusted packed string" # NoMethodError: undefined method `untrusted?' for [""]
+  fails "String#unpack with format 'u' does not untrust returned arrays if given an untrusted format string" # NoMethodError: undefined method `untrusted?' for [""]
+  fails "String#unpack with format 'u' does not untrust returned strings if given a untrusted format string" # NoMethodError: undefined method `untrust' for "u2"
+  fails "String#unpack with format 'u' does not untrust returned strings if given an trusted packed string" # NoMethodError: undefined method `untrusted?' for ""
+  fails "String#unpack with format 'u' does not untrust returned strings if given an untainted format string" # NoMethodError: undefined method `untrusted?' for ""
+  fails "String#unpack with format 'u' taints returned strings if given a tainted packed string" # Expected false to be true
+  fails "String#unpack with format 'u' untrusts returned strings if given a untrusted packed string" # NoMethodError: undefined method `untrust' for ""
+  fails "StringScanner#getbyte taints the returned String if the input was tainted"
+  fails "StringScanner#getch taints the returned String if the input was tainted"
+  fails "StringScanner#matched taints the returned String if the input was tainted"
+  fails "StringScanner#peek taints the returned String if the input was tainted"
+  fails "StringScanner#peep taints the returned String if the input was tainted"
+  fails "StringScanner#post_match taints the returned String if the input was tainted"
+  fails "StringScanner#pre_match taints the returned String if the input was tainted"
+  fails "StringScanner#rest taints the returned String if the input was tainted"
+end
diff --git a/spec/filters/unsupported/thread.rb b/spec/filters/unsupported/thread.rb
new file mode 100644
index 00000000..cfb0ef69
--- /dev/null
+++ b/spec/filters/unsupported/thread.rb
@@ -0,0 +1,10 @@
+# NOTE: run bin/format-filters after changing this file
+opal_unsupported_filter "Thread" do
+  fails "Module#autoload (concurrently) raises a LoadError in each thread if the file does not exist" # NotImplementedError: Thread creation not available
+  fails "Module#autoload (concurrently) raises a NameError in each thread if the constant is not set" # NotImplementedError: Thread creation not available
+  fails "Module#autoload loads the registered constant even if the constant was already loaded by another thread"
+  fails "StandardError is a superclass of ThreadError"
+  fails "The return keyword in a Thread raises a LocalJumpError if used to exit a thread"
+  fails "The throw keyword clears the current exception"
+  fails "The throw keyword raises an ArgumentError if used to exit a thread"
+end
diff --git a/spec/filters/unsupported/time.rb b/spec/filters/unsupported/time.rb
new file mode 100644
index 00000000..255bb62b
--- /dev/null
+++ b/spec/filters/unsupported/time.rb
@@ -0,0 +1,208 @@
+# NOTE: run bin/format-filters after changing this file
+opal_unsupported_filter "Time" do
+  fails "Time#+ accepts arguments that can be coerced into Rational"
+  fails "Time#+ adds a negative Float"
+  fails "Time#+ increments the time by the specified amount as rational numbers"
+  fails "Time#+ maintains microseconds precision"
+  fails "Time#+ maintains nanoseconds precision"
+  fails "Time#+ maintains precision"
+  fails "Time#+ maintains subseconds precision"
+  fails "Time#+ returns a time with the same fixed offset as self"
+  fails "Time#+ tracks microseconds"
+  fails "Time#+ tracks nanoseconds"
+  fails "Time#- accepts arguments that can be coerced into Rational"
+  fails "Time#- maintains microseconds precision"
+  fails "Time#- maintains nanoseconds precision"
+  fails "Time#- maintains precision"
+  fails "Time#- maintains subseconds precision"
+  fails "Time#- returns a time with nanoseconds precision between two time objects"
+  fails "Time#- returns a time with the same fixed offset as self"
+  fails "Time#- tracks microseconds"
+  fails "Time#- tracks nanoseconds"
+  fails "Time#<=> returns -1 if the first argument is a fraction of a microsecond before the second argument"
+  fails "Time#<=> returns -1 if the first argument is a point in time before the second argument (down to a microsecond)"
+  fails "Time#<=> returns 0 if time is the same as other, including fractional microseconds"
+  fails "Time#<=> returns 1 if the first argument is a fraction of a microsecond after the second argument"
+  fails "Time#<=> returns 1 if the first argument is a point in time after the second argument (down to a microsecond)"
+  fails "Time#day returns the day of the month (1..n) for a local Time"
+  fails "Time#day returns the day of the month for a Time with a fixed offset"
+  fails "Time#dst? dst? returns whether time is during daylight saving time"
+  fails "Time#dup returns a subclass instance"
+  fails "Time#eql? returns false if self and other have differing fractional microseconds"
+  fails "Time#eql? returns false if self and other have differing numbers of microseconds"
+  fails "Time#getgm returns a new time which is the utc representation of time"
+  fails "Time#getlocal raises ArgumentError if the String argument is not of the form (+|-)HH:MM"
+  fails "Time#getlocal raises ArgumentError if the argument represents a value greater than or equal to 86400 seconds"
+  fails "Time#getlocal raises ArgumentError if the argument represents a value less than or equal to -86400 seconds"
+  fails "Time#getlocal returns a Time with UTC offset specified as an Integer number of seconds"
+  fails "Time#getlocal returns a Time with a UTC offset of the specified number of Rational seconds"
+  fails "Time#getlocal returns a Time with a UTC offset specified as +HH:MM"
+  fails "Time#getlocal returns a Time with a UTC offset specified as -HH:MM"
+  fails "Time#getlocal returns a new time which is the local representation of time"
+  fails "Time#getlocal returns a new time with the correct utc_offset according to the set timezone"
+  fails "Time#getlocal with an argument that responds to #to_int coerces using #to_int"
+  fails "Time#getlocal with an argument that responds to #to_r coerces using #to_r"
+  fails "Time#getlocal with an argument that responds to #to_str coerces using #to_str"
+  fails "Time#getutc returns a new time which is the utc representation of time"
+  fails "Time#gmt_offset given negative offset returns a negative offset"
+  fails "Time#gmt_offset given positive offset returns a positive offset"
+  fails "Time#gmt_offset returns offset as Rational"
+  fails "Time#gmt_offset returns the correct offset for Hawaii around daylight savings time change"
+  fails "Time#gmt_offset returns the correct offset for New Zealand around daylight savings time change"
+  fails "Time#gmt_offset returns the correct offset for US Eastern time zone around daylight savings time change"
+  fails "Time#gmt_offset returns the offset in seconds between the timezone of time and UTC"
+  fails "Time#gmtime returns the utc representation of time"
+  fails "Time#gmtoff given negative offset returns a negative offset"
+  fails "Time#gmtoff given positive offset returns a positive offset"
+  fails "Time#gmtoff returns offset as Rational"
+  fails "Time#gmtoff returns the correct offset for Hawaii around daylight savings time change"
+  fails "Time#gmtoff returns the correct offset for New Zealand around daylight savings time change"
+  fails "Time#gmtoff returns the correct offset for US Eastern time zone around daylight savings time change"
+  fails "Time#gmtoff returns the offset in seconds between the timezone of time and UTC"
+  fails "Time#hash returns a Fixnum"
+  fails "Time#hour returns the hour of the day (0..23) for a local Time"
+  fails "Time#hour returns the hour of the day for a Time with a fixed offset"
+  fails "Time#isdst dst? returns whether time is during daylight saving time"
+  fails "Time#localtime changes the timezone according to the set one"
+  fails "Time#localtime converts self to local time, modifying the receiver"
+  fails "Time#localtime converts time to the UTC offset specified as an Integer number of seconds"
+  fails "Time#localtime does nothing if already in a local time zone"
+  fails "Time#localtime raises ArgumentError if the String argument is not of the form (+|-)HH:MM"
+  fails "Time#localtime raises ArgumentError if the argument represents a value greater than or equal to 86400 seconds"
+  fails "Time#localtime raises ArgumentError if the argument represents a value less than or equal to -86400 seconds"
+  fails "Time#localtime returns a Time with a UTC offset of the specified number of Rational seconds"
+  fails "Time#localtime returns a Time with a UTC offset specified as +HH:MM"
+  fails "Time#localtime returns a Time with a UTC offset specified as -HH:MM"
+  fails "Time#localtime returns self"
+  fails "Time#localtime with an argument that responds to #to_int coerces using #to_int"
+  fails "Time#localtime with an argument that responds to #to_r coerces using #to_r"
+  fails "Time#localtime with an argument that responds to #to_str coerces using #to_str"
+  fails "Time#mday returns the day of the month (1..n) for a local Time"
+  fails "Time#mday returns the day of the month for a Time with a fixed offset"
+  fails "Time#min returns the minute of the hour (0..59) for a local Time"
+  fails "Time#min returns the minute of the hour for a Time with a fixed offset"
+  fails "Time#mon returns the four digit year for a Time with a fixed offset"
+  fails "Time#mon returns the month of the year for a local Time"
+  fails "Time#month returns the four digit year for a Time with a fixed offset"
+  fails "Time#month returns the month of the year for a local Time"
+  fails "Time#nsec returns 0 for a Time constructed with a whole number of seconds"
+  fails "Time#nsec returns the nanoseconds part of a Time constructed with a Float number of seconds"
+  fails "Time#nsec returns the nanoseconds part of a Time constructed with a Rational number of seconds"
+  fails "Time#nsec returns the nanoseconds part of a Time constructed with an Float number of microseconds"
+  fails "Time#nsec returns the nanoseconds part of a Time constructed with an Integer number of microseconds"
+  fails "Time#nsec returns the nanoseconds part of a Time constructed with an Rational number of microseconds"
+  fails "Time#strftime with %L formats the milliseconds of the second"
+  fails "Time#strftime with %z formats a UTC time offset as '+0000'"
+  fails "Time#strftime with %z formats a local time with negative UTC offset as '-HHMM'"
+  fails "Time#strftime with %z formats a local time with positive UTC offset as '+HHMM'"
+  fails "Time#strftime with %z formats a time with fixed negative offset as '-HHMM'"
+  fails "Time#strftime with %z formats a time with fixed offset as '+/-HH:MM' with ':' specifier"
+  fails "Time#strftime with %z formats a time with fixed offset as '+/-HH:MM:SS' with '::' specifier"
+  fails "Time#strftime with %z formats a time with fixed positive offset as '+HHMM'"
+  fails "Time#subsec returns 0 as a Fixnum for a Time with a whole number of seconds"
+  fails "Time#subsec returns the fractional seconds as a Rational for a Time constructed with a Float number of seconds"
+  fails "Time#subsec returns the fractional seconds as a Rational for a Time constructed with a Rational number of seconds"
+  fails "Time#subsec returns the fractional seconds as a Rational for a Time constructed with an Float number of microseconds"
+  fails "Time#subsec returns the fractional seconds as a Rational for a Time constructed with an Integer number of microseconds"
+  fails "Time#subsec returns the fractional seconds as a Rational for a Time constructed with an Rational number of microseconds"
+  fails "Time#to_a returns a 10 element array representing the deconstructed time"
+  fails "Time#to_r returns a Rational even for a whole number of seconds"
+  fails "Time#to_r returns the a Rational representing seconds and subseconds since the epoch"
+  fails "Time#usec returns 0 for a Time constructed with an Rational number of microseconds < 1"
+  fails "Time#usec returns the microseconds for time created by Time#local"
+  fails "Time#usec returns the microseconds part of a Time constructed with a Rational number of seconds"
+  fails "Time#usec returns the microseconds part of a Time constructed with an Float number of microseconds > 1"
+  fails "Time#usec returns the microseconds part of a Time constructed with an Integer number of microseconds"
+  fails "Time#usec returns the microseconds part of a Time constructed with an Rational number of microseconds > 1"
+  fails "Time#utc returns the utc representation of time"
+  fails "Time#utc_offset given negative offset returns a negative offset"
+  fails "Time#utc_offset given positive offset returns a positive offset"
+  fails "Time#utc_offset returns offset as Rational"
+  fails "Time#utc_offset returns the correct offset for Hawaii around daylight savings time change"
+  fails "Time#utc_offset returns the correct offset for New Zealand around daylight savings time change"
+  fails "Time#utc_offset returns the correct offset for US Eastern time zone around daylight savings time change"
+  fails "Time#utc_offset returns the offset in seconds between the timezone of time and UTC"
+  fails "Time#wday returns an integer representing the day of the week, 0..6, with Sunday being 0"
+  fails "Time#yday returns an integer representing the day of the year, 1..366" # Expected 117 == 116
+  fails "Time#year returns the four digit year for a Time with a fixed offset"
+  fails "Time#year returns the four digit year for a local Time as an Integer"
+  fails "Time#zone Encoding.default_internal is set doesn't raise errors for a Time with a fixed offset"
+  fails "Time#zone Encoding.default_internal is set returns the string with the default internal encoding"
+  fails "Time#zone returns UTC when called on a UTC time"
+  fails "Time#zone returns nil for a Time with a fixed offset"
+  fails "Time#zone returns nil when getting the local time with a fixed offset"
+  fails "Time#zone returns the correct timezone for a local time"
+  fails "Time#zone returns the time zone used for time"
+  fails "Time.at passed Numeric returns a subclass instance on a Time subclass"
+  fails "Time.at passed Time returns a subclass instance"
+  fails "Time.at passed [Integer, Numeric] returns a Time object representing the given number of seconds and Float microseconds since 1970-01-01 00:00:00 UTC"
+  fails "Time.at passed non-Time, non-Numeric with an argument that responds to #to_r coerces using #to_r"
+  fails "Time.at with a second argument that responds to #to_r coerces using #to_r"
+  fails "Time.gm handles fractional microseconds as a Float"
+  fails "Time.gm handles fractional microseconds as a Rational"
+  fails "Time.gm handles fractional seconds as a Rational"
+  fails "Time.gm handles microseconds"
+  fails "Time.gm ignores fractional seconds if a passed fractional number of microseconds"
+  fails "Time.gm ignores fractional seconds if a passed whole number of microseconds"
+  fails "Time.gm returns subclass instances"
+  fails "Time.local creates a time based on given C-style gmtime arguments, interpreted in the local time zone"
+  fails "Time.local creates a time based on given values, interpreted in the local time zone"
+  fails "Time.local creates the correct time just after dst change"
+  fails "Time.local creates the correct time just before dst change"
+  fails "Time.local handles fractional microseconds as a Float"
+  fails "Time.local handles fractional microseconds as a Rational"
+  fails "Time.local handles fractional seconds as a Rational"
+  fails "Time.local handles microseconds"
+  fails "Time.local ignores fractional seconds if a passed fractional number of microseconds"
+  fails "Time.local ignores fractional seconds if a passed whole number of microseconds"
+  fails "Time.local respects rare old timezones"
+  fails "Time.local returns subclass instances"
+  fails "Time.local timezone changes correctly adjusts the timezone change to 'CEST' on 'Europe/Amsterdam'"
+  fails "Time.local timezone changes correctly adjusts the timezone change to 'EET' on 'Europe/Istanbul'"
+  fails "Time.mktime creates a time based on given C-style gmtime arguments, interpreted in the local time zone"
+  fails "Time.mktime creates a time based on given values, interpreted in the local time zone"
+  fails "Time.mktime creates the correct time just after dst change"
+  fails "Time.mktime creates the correct time just before dst change"
+  fails "Time.mktime handles fractional microseconds as a Float"
+  fails "Time.mktime handles fractional microseconds as a Rational"
+  fails "Time.mktime handles fractional seconds as a Rational"
+  fails "Time.mktime handles microseconds"
+  fails "Time.mktime ignores fractional seconds if a passed fractional number of microseconds"
+  fails "Time.mktime ignores fractional seconds if a passed whole number of microseconds"
+  fails "Time.mktime respects rare old timezones"
+  fails "Time.mktime returns subclass instances"
+  fails "Time.mktime timezone changes correctly adjusts the timezone change to 'CEST' on 'Europe/Amsterdam'"
+  fails "Time.mktime timezone changes correctly adjusts the timezone change to 'EET' on 'Europe/Istanbul'"
+  fails "Time.new creates a subclass instance if called on a subclass"
+  fails "Time.new creates a time based on given values, interpreted in the local time zone"
+  fails "Time.new handles fractional seconds as a Rational"
+  fails "Time.new respects rare old timezones"
+  fails "Time.new returns subclass instances"
+  fails "Time.new timezone changes correctly adjusts the timezone change to 'CEST' on 'Europe/Amsterdam'"
+  fails "Time.new timezone changes correctly adjusts the timezone change to 'EET' on 'Europe/Istanbul'"
+  fails "Time.new with a utc_offset argument adds one hour if the offset minute value is greater than 59"
+  fails "Time.new with a utc_offset argument raises ArgumentError if the String argument is not of the form (+|-)HH:MM"
+  fails "Time.new with a utc_offset argument raises ArgumentError if the argument represents a value greater than or equal to 86400 seconds"
+  fails "Time.new with a utc_offset argument raises ArgumentError if the argument represents a value less than or equal to -86400 seconds"
+  fails "Time.new with a utc_offset argument raises ArgumentError if the hour value is greater than 23"
+  fails "Time.new with a utc_offset argument returns a Time with a UTC offset of the specified number of Integer seconds"
+  fails "Time.new with a utc_offset argument returns a Time with a UTC offset of the specified number of Rational seconds"
+  fails "Time.new with a utc_offset argument returns a Time with a UTC offset specified as +HH:MM"
+  fails "Time.new with a utc_offset argument returns a Time with a UTC offset specified as -HH:MM"
+  fails "Time.new with a utc_offset argument returns a local Time if the argument is nil"
+  fails "Time.new with a utc_offset argument returns a non-UTC time"
+  fails "Time.new with a utc_offset argument with an argument that responds to #to_int coerces using #to_int"
+  fails "Time.new with a utc_offset argument with an argument that responds to #to_r coerces using #to_r"
+  fails "Time.new with a utc_offset argument with an argument that responds to #to_str coerces using #to_str"
+  fails "Time.now creates a subclass instance if called on a subclass"
+  fails "Time.utc handles fractional microseconds as a Float"
+  fails "Time.utc handles fractional microseconds as a Rational"
+  fails "Time.utc handles fractional seconds as a Rational"
+  fails "Time.utc handles microseconds"
+  fails "Time.utc ignores fractional seconds if a passed fractional number of microseconds"
+  fails "Time.utc ignores fractional seconds if a passed whole number of microseconds"
+  fails "Time.utc returns subclass instances"
+  fails_badly "Marshal.load for a Time loads the zone" # Seasonal failure
+  fails_badly "Time#inspect formats the local time following the pattern 'yyyy-MM-dd HH:mm:ss Z'" # Seasonal failure
+  fails_badly "Time#to_s formats the local time following the pattern 'yyyy-MM-dd HH:mm:ss Z'" # Seasonal failure
+end
diff --git a/spec/filters/unsupported/usage_of_files.rb b/spec/filters/unsupported/usage_of_files.rb
new file mode 100644
index 00000000..5b84723a
--- /dev/null
+++ b/spec/filters/unsupported/usage_of_files.rb
@@ -0,0 +1,262 @@
+# NOTE: run bin/format-filters after changing this file
+opal_filter "Specs that use temporary files" do
+  fails "A Symbol literal inherits the encoding of the magic comment and can have a binary encoding"
+  fails "Kernel.printf formatting io is not specified faulty key raises a KeyError"
+  fails "Kernel.printf formatting io is not specified faulty key sets the Hash as the receiver of KeyError"
+  fails "Kernel.printf formatting io is not specified faulty key sets the unmatched key as the key of KeyError"
+  fails "Kernel.printf formatting io is not specified flags # applies to format o does nothing for negative argument"
+  fails "Kernel.printf formatting io is not specified flags # applies to format o increases the precision until the first digit will be `0' if it is not formatted as complements"
+  fails "Kernel.printf formatting io is not specified flags # applies to formats aAeEfgG changes format from dd.dddd to exponential form for gG"
+  fails "Kernel.printf formatting io is not specified flags # applies to formats aAeEfgG forces a decimal point to be added, even if no digits follow"
+  fails "Kernel.printf formatting io is not specified flags # applies to formats bBxX does nothing for zero argument"
+  fails "Kernel.printf formatting io is not specified flags # applies to formats bBxX prefixes the result with 0x, 0X, 0b and 0B respectively for non-zero argument"
+  fails "Kernel.printf formatting io is not specified flags # applies to gG does not remove trailing zeros"
+  fails "Kernel.printf formatting io is not specified flags (digit)$ ignores '-' sign"
+  fails "Kernel.printf formatting io is not specified flags (digit)$ raises ArgumentError exception when absolute and relative argument numbers are mixed"
+  fails "Kernel.printf formatting io is not specified flags (digit)$ raises exception if argument number is bigger than actual arguments list"
+  fails "Kernel.printf formatting io is not specified flags (digit)$ specifies the absolute argument number for this field"
+  fails "Kernel.printf formatting io is not specified flags * left-justifies the result if specified with $ argument is negative"
+  fails "Kernel.printf formatting io is not specified flags * left-justifies the result if width is negative"
+  fails "Kernel.printf formatting io is not specified flags * raises ArgumentError when is mixed with width"
+  fails "Kernel.printf formatting io is not specified flags * uses the previous argument as the field width"
+  fails "Kernel.printf formatting io is not specified flags * uses the specified argument as the width if * is followed by a number and $"
+  fails "Kernel.printf formatting io is not specified flags + applies to numeric formats bBdiouxXaAeEfgG adds a leading plus sign to non-negative numbers"
+  fails "Kernel.printf formatting io is not specified flags + applies to numeric formats bBdiouxXaAeEfgG does not use two's complement form for negative numbers for formats bBoxX"
+  fails "Kernel.printf formatting io is not specified flags - left-justifies the result of conversion if width is specified"
+  fails "Kernel.printf formatting io is not specified flags 0 (zero) applies to numeric formats bBdiouxXaAeEfgG and width is specified pads with zeros, not spaces"
+  fails "Kernel.printf formatting io is not specified flags 0 (zero) applies to numeric formats bBdiouxXaAeEfgG and width is specified uses radix-1 when displays negative argument as a two's complement"
+  fails "Kernel.printf formatting io is not specified flags space applies to numeric formats bBdiouxXeEfgGaA does not leave a space at the start of negative numbers"
+  fails "Kernel.printf formatting io is not specified flags space applies to numeric formats bBdiouxXeEfgGaA leaves a space at the start of non-negative numbers"
+  fails "Kernel.printf formatting io is not specified flags space applies to numeric formats bBdiouxXeEfgGaA prevents converting negative argument to two's complement form"
+  fails "Kernel.printf formatting io is not specified flags space applies to numeric formats bBdiouxXeEfgGaA treats several white spaces as one"
+  fails "Kernel.printf formatting io is not specified float formats A converts floating point argument as [-]0xh.hhhhp[+-]dd and use uppercase X and P"
+  fails "Kernel.printf formatting io is not specified float formats A displays Float::INFINITY as Inf"
+  fails "Kernel.printf formatting io is not specified float formats A displays Float::NAN as NaN"
+  fails "Kernel.printf formatting io is not specified float formats E converts argument into exponential notation [-]d.dddddde[+-]dd"
+  fails "Kernel.printf formatting io is not specified float formats E cuts excessive digits and keeps only 6 ones"
+  fails "Kernel.printf formatting io is not specified float formats E displays Float::INFINITY as Inf"
+  fails "Kernel.printf formatting io is not specified float formats E displays Float::NAN as NaN"
+  fails "Kernel.printf formatting io is not specified float formats E rounds the last significant digit to the closest one"
+  fails "Kernel.printf formatting io is not specified float formats G displays Float::INFINITY as Inf"
+  fails "Kernel.printf formatting io is not specified float formats G displays Float::NAN as NaN"
+  fails "Kernel.printf formatting io is not specified float formats G otherwise converts a floating point number in dd.dddd form"
+  fails "Kernel.printf formatting io is not specified float formats G otherwise cuts excessive digits in fractional part and keeps only 4 ones"
+  fails "Kernel.printf formatting io is not specified float formats G otherwise cuts fraction part to have only 6 digits at all"
+  fails "Kernel.printf formatting io is not specified float formats G otherwise rounds the last significant digit to the closest one in fractional part"
+  fails "Kernel.printf formatting io is not specified float formats G the exponent is greater than or equal to the precision (6 by default) converts a floating point number using exponential form"
+  fails "Kernel.printf formatting io is not specified float formats G the exponent is less than -4 converts a floating point number using exponential form"
+  fails "Kernel.printf formatting io is not specified float formats a converts floating point argument as [-]0xh.hhhhp[+-]dd"
+  fails "Kernel.printf formatting io is not specified float formats a displays Float::INFINITY as Inf"
+  fails "Kernel.printf formatting io is not specified float formats a displays Float::NAN as NaN"
+  fails "Kernel.printf formatting io is not specified float formats converts argument into Float"
+  fails "Kernel.printf formatting io is not specified float formats e converts argument into exponential notation [-]d.dddddde[+-]dd"
+  fails "Kernel.printf formatting io is not specified float formats e cuts excessive digits and keeps only 6 ones"
+  fails "Kernel.printf formatting io is not specified float formats e displays Float::INFINITY as Inf"
+  fails "Kernel.printf formatting io is not specified float formats e displays Float::NAN as NaN"
+  fails "Kernel.printf formatting io is not specified float formats e rounds the last significant digit to the closest one"
+  fails "Kernel.printf formatting io is not specified float formats f converts floating point argument as [-]ddd.dddddd"
+  fails "Kernel.printf formatting io is not specified float formats f cuts excessive digits and keeps only 6 ones"
+  fails "Kernel.printf formatting io is not specified float formats f displays Float::INFINITY as Inf"
+  fails "Kernel.printf formatting io is not specified float formats f displays Float::NAN as NaN"
+  fails "Kernel.printf formatting io is not specified float formats f rounds the last significant digit to the closest one"
+  fails "Kernel.printf formatting io is not specified float formats g displays Float::INFINITY as Inf"
+  fails "Kernel.printf formatting io is not specified float formats g displays Float::NAN as NaN"
+  fails "Kernel.printf formatting io is not specified float formats g otherwise converts a floating point number in dd.dddd form"
+  fails "Kernel.printf formatting io is not specified float formats g otherwise cuts excessive digits in fractional part and keeps only 4 ones"
+  fails "Kernel.printf formatting io is not specified float formats g otherwise cuts fraction part to have only 6 digits at all"
+  fails "Kernel.printf formatting io is not specified float formats g otherwise rounds the last significant digit to the closest one in fractional part"
+  fails "Kernel.printf formatting io is not specified float formats g the exponent is greater than or equal to the precision (6 by default) converts a floating point number using exponential form"
+  fails "Kernel.printf formatting io is not specified float formats g the exponent is less than -4 converts a floating point number using exponential form"
+  fails "Kernel.printf formatting io is not specified float formats raises TypeError exception if cannot convert to Float"
+  fails "Kernel.printf formatting io is not specified integer formats B collapse negative number representation if it equals 1"
+  fails "Kernel.printf formatting io is not specified integer formats B converts argument as a binary number"
+  fails "Kernel.printf formatting io is not specified integer formats B displays negative number as a two's complement prefixed with '..1'"
+  fails "Kernel.printf formatting io is not specified integer formats X collapse negative number representation if it equals F"
+  fails "Kernel.printf formatting io is not specified integer formats X converts argument as a hexadecimal number with uppercase letters"
+  fails "Kernel.printf formatting io is not specified integer formats X displays negative number as a two's complement prefixed with '..f'"
+  fails "Kernel.printf formatting io is not specified integer formats b collapse negative number representation if it equals 1"
+  fails "Kernel.printf formatting io is not specified integer formats b converts argument as a binary number"
+  fails "Kernel.printf formatting io is not specified integer formats b displays negative number as a two's complement prefixed with '..1'"
+  fails "Kernel.printf formatting io is not specified integer formats converts String argument with Kernel#Integer"
+  fails "Kernel.printf formatting io is not specified integer formats converts argument into Integer with to_i if to_int isn't available"
+  fails "Kernel.printf formatting io is not specified integer formats converts argument into Integer with to_int"
+  fails "Kernel.printf formatting io is not specified integer formats d converts argument as a decimal number"
+  fails "Kernel.printf formatting io is not specified integer formats d works well with large numbers"
+  fails "Kernel.printf formatting io is not specified integer formats i converts argument as a decimal number"
+  fails "Kernel.printf formatting io is not specified integer formats i works well with large numbers"
+  fails "Kernel.printf formatting io is not specified integer formats o collapse negative number representation if it equals 7"
+  fails "Kernel.printf formatting io is not specified integer formats o converts argument as an octal number"
+  fails "Kernel.printf formatting io is not specified integer formats o displays negative number as a two's complement prefixed with '..7'"
+  fails "Kernel.printf formatting io is not specified integer formats raises TypeError exception if cannot convert to Integer"
+  fails "Kernel.printf formatting io is not specified integer formats u converts argument as a decimal number"
+  fails "Kernel.printf formatting io is not specified integer formats u works well with large numbers"
+  fails "Kernel.printf formatting io is not specified integer formats x collapse negative number representation if it equals f"
+  fails "Kernel.printf formatting io is not specified integer formats x converts argument as a hexadecimal number"
+  fails "Kernel.printf formatting io is not specified integer formats x displays negative number as a two's complement prefixed with '..f'"
+  fails "Kernel.printf formatting io is not specified other formats % alone raises an ArgumentError"
+  fails "Kernel.printf formatting io is not specified other formats % is escaped by %"
+  fails "Kernel.printf formatting io is not specified other formats c displays character if argument is a numeric code of character"
+  fails "Kernel.printf formatting io is not specified other formats c displays character if argument is a single character string"
+  fails "Kernel.printf formatting io is not specified other formats c raises ArgumentError if argument is a string of several characters"
+  fails "Kernel.printf formatting io is not specified other formats c raises ArgumentError if argument is an empty string"
+  fails "Kernel.printf formatting io is not specified other formats c supports Unicode characters"
+  fails "Kernel.printf formatting io is not specified other formats p displays argument.inspect value"
+  fails "Kernel.printf formatting io is not specified other formats s converts argument to string with to_s"
+  fails "Kernel.printf formatting io is not specified other formats s does not try to convert with to_str"
+  fails "Kernel.printf formatting io is not specified other formats s substitute argument passes as a string"
+  fails "Kernel.printf formatting io is not specified precision float types controls the number of decimal places displayed in fraction part"
+  fails "Kernel.printf formatting io is not specified precision float types does not affect G format"
+  fails "Kernel.printf formatting io is not specified precision integer types controls the number of decimal places displayed"
+  fails "Kernel.printf formatting io is not specified precision string formats determines the maximum number of characters to be copied from the string"
+  fails "Kernel.printf formatting io is not specified reference by name %<name>s style allows to place name in any position"
+  fails "Kernel.printf formatting io is not specified reference by name %<name>s style cannot be mixed with unnamed style"
+  fails "Kernel.printf formatting io is not specified reference by name %<name>s style supports flags, width, precision and type"
+  fails "Kernel.printf formatting io is not specified reference by name %<name>s style uses value passed in a hash argument"
+  fails "Kernel.printf formatting io is not specified reference by name %{name} style cannot be mixed with unnamed style"
+  fails "Kernel.printf formatting io is not specified reference by name %{name} style converts value to String with to_s"
+  fails "Kernel.printf formatting io is not specified reference by name %{name} style does not support type style"
+  fails "Kernel.printf formatting io is not specified reference by name %{name} style raises KeyError when there is no matching key"
+  fails "Kernel.printf formatting io is not specified reference by name %{name} style supports flags, width and precision"
+  fails "Kernel.printf formatting io is not specified reference by name %{name} style uses value passed in a hash argument"
+  fails "Kernel.printf formatting io is not specified width is ignored if argument's actual length is greater"
+  fails "Kernel.printf formatting io is not specified width specifies the minimum number of characters that will be written to the result"
+  fails "Kernel.printf formatting io is specified faulty key raises a KeyError"
+  fails "Kernel.printf formatting io is specified faulty key sets the Hash as the receiver of KeyError"
+  fails "Kernel.printf formatting io is specified faulty key sets the unmatched key as the key of KeyError"
+  fails "Kernel.printf formatting io is specified flags # applies to format o does nothing for negative argument"
+  fails "Kernel.printf formatting io is specified flags # applies to format o increases the precision until the first digit will be `0' if it is not formatted as complements"
+  fails "Kernel.printf formatting io is specified flags # applies to formats aAeEfgG changes format from dd.dddd to exponential form for gG"
+  fails "Kernel.printf formatting io is specified flags # applies to formats aAeEfgG forces a decimal point to be added, even if no digits follow"
+  fails "Kernel.printf formatting io is specified flags # applies to formats bBxX does nothing for zero argument"
+  fails "Kernel.printf formatting io is specified flags # applies to formats bBxX prefixes the result with 0x, 0X, 0b and 0B respectively for non-zero argument"
+  fails "Kernel.printf formatting io is specified flags # applies to gG does not remove trailing zeros"
+  fails "Kernel.printf formatting io is specified flags (digit)$ ignores '-' sign"
+  fails "Kernel.printf formatting io is specified flags (digit)$ raises ArgumentError exception when absolute and relative argument numbers are mixed"
+  fails "Kernel.printf formatting io is specified flags (digit)$ raises exception if argument number is bigger than actual arguments list"
+  fails "Kernel.printf formatting io is specified flags (digit)$ specifies the absolute argument number for this field"
+  fails "Kernel.printf formatting io is specified flags * left-justifies the result if specified with $ argument is negative"
+  fails "Kernel.printf formatting io is specified flags * left-justifies the result if width is negative"
+  fails "Kernel.printf formatting io is specified flags * raises ArgumentError when is mixed with width"
+  fails "Kernel.printf formatting io is specified flags * uses the previous argument as the field width"
+  fails "Kernel.printf formatting io is specified flags * uses the specified argument as the width if * is followed by a number and $"
+  fails "Kernel.printf formatting io is specified flags + applies to numeric formats bBdiouxXaAeEfgG adds a leading plus sign to non-negative numbers"
+  fails "Kernel.printf formatting io is specified flags + applies to numeric formats bBdiouxXaAeEfgG does not use two's complement form for negative numbers for formats bBoxX"
+  fails "Kernel.printf formatting io is specified flags - left-justifies the result of conversion if width is specified"
+  fails "Kernel.printf formatting io is specified flags 0 (zero) applies to numeric formats bBdiouxXaAeEfgG and width is specified pads with zeros, not spaces"
+  fails "Kernel.printf formatting io is specified flags 0 (zero) applies to numeric formats bBdiouxXaAeEfgG and width is specified uses radix-1 when displays negative argument as a two's complement"
+  fails "Kernel.printf formatting io is specified flags space applies to numeric formats bBdiouxXeEfgGaA does not leave a space at the start of negative numbers"
+  fails "Kernel.printf formatting io is specified flags space applies to numeric formats bBdiouxXeEfgGaA leaves a space at the start of non-negative numbers"
+  fails "Kernel.printf formatting io is specified flags space applies to numeric formats bBdiouxXeEfgGaA prevents converting negative argument to two's complement form"
+  fails "Kernel.printf formatting io is specified flags space applies to numeric formats bBdiouxXeEfgGaA treats several white spaces as one"
+  fails "Kernel.printf formatting io is specified float formats A converts floating point argument as [-]0xh.hhhhp[+-]dd and use uppercase X and P"
+  fails "Kernel.printf formatting io is specified float formats A displays Float::INFINITY as Inf"
+  fails "Kernel.printf formatting io is specified float formats A displays Float::NAN as NaN"
+  fails "Kernel.printf formatting io is specified float formats E converts argument into exponential notation [-]d.dddddde[+-]dd"
+  fails "Kernel.printf formatting io is specified float formats E cuts excessive digits and keeps only 6 ones"
+  fails "Kernel.printf formatting io is specified float formats E displays Float::INFINITY as Inf"
+  fails "Kernel.printf formatting io is specified float formats E displays Float::NAN as NaN"
+  fails "Kernel.printf formatting io is specified float formats E rounds the last significant digit to the closest one"
+  fails "Kernel.printf formatting io is specified float formats G displays Float::INFINITY as Inf"
+  fails "Kernel.printf formatting io is specified float formats G displays Float::NAN as NaN"
+  fails "Kernel.printf formatting io is specified float formats G otherwise converts a floating point number in dd.dddd form"
+  fails "Kernel.printf formatting io is specified float formats G otherwise cuts excessive digits in fractional part and keeps only 4 ones"
+  fails "Kernel.printf formatting io is specified float formats G otherwise cuts fraction part to have only 6 digits at all"
+  fails "Kernel.printf formatting io is specified float formats G otherwise rounds the last significant digit to the closest one in fractional part"
+  fails "Kernel.printf formatting io is specified float formats G the exponent is greater than or equal to the precision (6 by default) converts a floating point number using exponential form"
+  fails "Kernel.printf formatting io is specified float formats G the exponent is less than -4 converts a floating point number using exponential form"
+  fails "Kernel.printf formatting io is specified float formats a converts floating point argument as [-]0xh.hhhhp[+-]dd"
+  fails "Kernel.printf formatting io is specified float formats a displays Float::INFINITY as Inf"
+  fails "Kernel.printf formatting io is specified float formats a displays Float::NAN as NaN"
+  fails "Kernel.printf formatting io is specified float formats converts argument into Float"
+  fails "Kernel.printf formatting io is specified float formats e converts argument into exponential notation [-]d.dddddde[+-]dd"
+  fails "Kernel.printf formatting io is specified float formats e cuts excessive digits and keeps only 6 ones"
+  fails "Kernel.printf formatting io is specified float formats e displays Float::INFINITY as Inf"
+  fails "Kernel.printf formatting io is specified float formats e displays Float::NAN as NaN"
+  fails "Kernel.printf formatting io is specified float formats e rounds the last significant digit to the closest one"
+  fails "Kernel.printf formatting io is specified float formats f converts floating point argument as [-]ddd.dddddd"
+  fails "Kernel.printf formatting io is specified float formats f cuts excessive digits and keeps only 6 ones"
+  fails "Kernel.printf formatting io is specified float formats f displays Float::INFINITY as Inf"
+  fails "Kernel.printf formatting io is specified float formats f displays Float::NAN as NaN"
+  fails "Kernel.printf formatting io is specified float formats f rounds the last significant digit to the closest one"
+  fails "Kernel.printf formatting io is specified float formats g displays Float::INFINITY as Inf"
+  fails "Kernel.printf formatting io is specified float formats g displays Float::NAN as NaN"
+  fails "Kernel.printf formatting io is specified float formats g otherwise converts a floating point number in dd.dddd form"
+  fails "Kernel.printf formatting io is specified float formats g otherwise cuts excessive digits in fractional part and keeps only 4 ones"
+  fails "Kernel.printf formatting io is specified float formats g otherwise cuts fraction part to have only 6 digits at all"
+  fails "Kernel.printf formatting io is specified float formats g otherwise rounds the last significant digit to the closest one in fractional part"
+  fails "Kernel.printf formatting io is specified float formats g the exponent is greater than or equal to the precision (6 by default) converts a floating point number using exponential form"
+  fails "Kernel.printf formatting io is specified float formats g the exponent is less than -4 converts a floating point number using exponential form"
+  fails "Kernel.printf formatting io is specified float formats raises TypeError exception if cannot convert to Float"
+  fails "Kernel.printf formatting io is specified integer formats B collapse negative number representation if it equals 1"
+  fails "Kernel.printf formatting io is specified integer formats B converts argument as a binary number"
+  fails "Kernel.printf formatting io is specified integer formats B displays negative number as a two's complement prefixed with '..1'"
+  fails "Kernel.printf formatting io is specified integer formats X collapse negative number representation if it equals F"
+  fails "Kernel.printf formatting io is specified integer formats X converts argument as a hexadecimal number with uppercase letters"
+  fails "Kernel.printf formatting io is specified integer formats X displays negative number as a two's complement prefixed with '..f'"
+  fails "Kernel.printf formatting io is specified integer formats b collapse negative number representation if it equals 1"
+  fails "Kernel.printf formatting io is specified integer formats b converts argument as a binary number"
+  fails "Kernel.printf formatting io is specified integer formats b displays negative number as a two's complement prefixed with '..1'"
+  fails "Kernel.printf formatting io is specified integer formats converts String argument with Kernel#Integer"
+  fails "Kernel.printf formatting io is specified integer formats converts argument into Integer with to_i if to_int isn't available"
+  fails "Kernel.printf formatting io is specified integer formats converts argument into Integer with to_int"
+  fails "Kernel.printf formatting io is specified integer formats d converts argument as a decimal number"
+  fails "Kernel.printf formatting io is specified integer formats d works well with large numbers"
+  fails "Kernel.printf formatting io is specified integer formats i converts argument as a decimal number"
+  fails "Kernel.printf formatting io is specified integer formats i works well with large numbers"
+  fails "Kernel.printf formatting io is specified integer formats o collapse negative number representation if it equals 7"
+  fails "Kernel.printf formatting io is specified integer formats o converts argument as an octal number"
+  fails "Kernel.printf formatting io is specified integer formats o displays negative number as a two's complement prefixed with '..7'"
+  fails "Kernel.printf formatting io is specified integer formats raises TypeError exception if cannot convert to Integer"
+  fails "Kernel.printf formatting io is specified integer formats u converts argument as a decimal number"
+  fails "Kernel.printf formatting io is specified integer formats u works well with large numbers"
+  fails "Kernel.printf formatting io is specified integer formats x collapse negative number representation if it equals f"
+  fails "Kernel.printf formatting io is specified integer formats x converts argument as a hexadecimal number"
+  fails "Kernel.printf formatting io is specified integer formats x displays negative number as a two's complement prefixed with '..f'"
+  fails "Kernel.printf formatting io is specified other formats % alone raises an ArgumentError"
+  fails "Kernel.printf formatting io is specified other formats % is escaped by %"
+  fails "Kernel.printf formatting io is specified other formats c displays character if argument is a numeric code of character"
+  fails "Kernel.printf formatting io is specified other formats c displays character if argument is a single character string"
+  fails "Kernel.printf formatting io is specified other formats c raises ArgumentError if argument is a string of several characters"
+  fails "Kernel.printf formatting io is specified other formats c raises ArgumentError if argument is an empty string"
+  fails "Kernel.printf formatting io is specified other formats c supports Unicode characters"
+  fails "Kernel.printf formatting io is specified other formats p displays argument.inspect value"
+  fails "Kernel.printf formatting io is specified other formats s converts argument to string with to_s"
+  fails "Kernel.printf formatting io is specified other formats s does not try to convert with to_str"
+  fails "Kernel.printf formatting io is specified other formats s substitute argument passes as a string"
+  fails "Kernel.printf formatting io is specified precision float types controls the number of decimal places displayed in fraction part"
+  fails "Kernel.printf formatting io is specified precision float types does not affect G format"
+  fails "Kernel.printf formatting io is specified precision integer types controls the number of decimal places displayed"
+  fails "Kernel.printf formatting io is specified precision string formats determines the maximum number of characters to be copied from the string"
+  fails "Kernel.printf formatting io is specified reference by name %<name>s style allows to place name in any position"
+  fails "Kernel.printf formatting io is specified reference by name %<name>s style cannot be mixed with unnamed style"
+  fails "Kernel.printf formatting io is specified reference by name %<name>s style supports flags, width, precision and type"
+  fails "Kernel.printf formatting io is specified reference by name %<name>s style uses value passed in a hash argument"
+  fails "Kernel.printf formatting io is specified reference by name %{name} style cannot be mixed with unnamed style"
+  fails "Kernel.printf formatting io is specified reference by name %{name} style converts value to String with to_s"
+  fails "Kernel.printf formatting io is specified reference by name %{name} style does not support type style"
+  fails "Kernel.printf formatting io is specified reference by name %{name} style raises KeyError when there is no matching key"
+  fails "Kernel.printf formatting io is specified reference by name %{name} style supports flags, width and precision"
+  fails "Kernel.printf formatting io is specified reference by name %{name} style uses value passed in a hash argument"
+  fails "Kernel.printf formatting io is specified width is ignored if argument's actual length is greater"
+  fails "Kernel.printf formatting io is specified width specifies the minimum number of characters that will be written to the result"
+  fails "Struct.new keyword_init: false option behaves like it does without :keyword_init option"
+  fails "Struct.new keyword_init: true option creates a class that accepts keyword arguments to initialize"
+  fails "Struct.new keyword_init: true option new class instantiation accepts arguments as hash as well"
+  fails "Struct.new keyword_init: true option new class instantiation raises ArgumentError when passed a list of arguments"
+  fails "Struct.new keyword_init: true option new class instantiation raises ArgumentError when passed not declared keyword argument"
+  fails "The BEGIN keyword returns the top-level script's filename for __FILE__"
+  fails "The return keyword at top level file loading stops file loading and execution"
+  fails "The return keyword at top level file requiring stops file loading and execution"
+  fails "The return keyword at top level return with argument does not affect exit status"
+  fails "The return keyword at top level stops file execution"
+  fails "The return keyword at top level within a begin fires ensure block before returning while loads file"
+  fails "The return keyword at top level within a begin fires ensure block before returning"
+  fails "The return keyword at top level within a begin is allowed in begin block"
+  fails "The return keyword at top level within a begin is allowed in ensure block"
+  fails "The return keyword at top level within a begin is allowed in rescue block"
+  fails "The return keyword at top level within a begin swallows exception if returns in ensure block"
+  fails "The return keyword at top level within a block is allowed"
+  fails "The return keyword at top level within a class raises a SyntaxError"
+  fails "The return keyword at top level within if is allowed"
+  fails "The return keyword at top level within while loop is allowed"
+end
diff --git a/spec/lib/builder_processors_spec.rb b/spec/lib/builder_processors_spec.rb
new file mode 100644
index 00000000..cc332f28
--- /dev/null
+++ b/spec/lib/builder_processors_spec.rb
@@ -0,0 +1,44 @@
+require 'lib/spec_helper'
+require 'opal/builder_processors'
+
+RSpec.describe Opal::BuilderProcessors::JsProcessor do
+  it 'maps to one fragment per line' do
+    processor = described_class.new("line1\n line2\n  line3", 'file.js')
+    expect(processor.source_map.fragments.map(&:code)).to eq([
+      "line1\n",
+      " line2\n",
+      "  line3\n",
+      "Opal.loaded([\"file.js\"]);",
+    ])
+  end
+
+  it 'adds loading code at the end of the source' do
+    processor = described_class.new("line1\n line2\n  line3", 'file.js')
+    expect(processor.source).to eq(%Q{line1\n line2\n  line3\nOpal.loaded(["file.js"]);})
+  end
+end
+
+RSpec.describe Opal::BuilderProcessors::RubyProcessor do
+  it 'compiles ruby to js' do
+    processor = described_class.new('puts 5', '-e')
+    expect(processor.to_s).to include('$puts(5)')
+  end
+
+  describe ':requirable option' do
+    it 'is respected' do
+      processor = described_class.new('puts 5', '-e', requirable: true)
+      expect(processor.to_s).to include('Opal.modules[')
+    end
+
+    it 'defaults to "false"' do
+      processor = described_class.new('puts 5', '-e')
+      expect(processor.to_s).not_to include('Opal.modules[')
+    end
+  end
+
+  it 'fills required_trees' do
+    processor = described_class.new('require_tree "./pippo"', '-e')
+    expect(processor.required_trees).to eq(['./pippo'])
+  end
+end
+
diff --git a/spec/lib/builder_spec.rb b/spec/lib/builder_spec.rb
new file mode 100644
index 00000000..09b4a32c
--- /dev/null
+++ b/spec/lib/builder_spec.rb
@@ -0,0 +1,133 @@
+require 'lib/spec_helper'
+require 'opal/builder'
+
+RSpec.describe Opal::Builder do
+  subject(:builder) { described_class.new(options) }
+  let(:options) { {} }
+  let(:ruby_processor) { Opal::BuilderProcessors::RubyProcessor }
+
+  it 'compiles opal' do
+    expect(builder.build('opal').to_s).to match('(Opal);')
+  end
+
+  it 'respect #require_tree calls' do
+    builder.append_paths(File.expand_path('..', __FILE__))
+    expect(builder.build('fixtures/require_tree_test').to_s).to include('Opal.modules["fixtures/required_tree_test/required_file1"]')
+  end
+
+  describe ':stubs' do
+    let(:options) { {stubs: ['foo']} }
+
+    it 'compiles them as empty files' do
+      source = 'require "foo"'
+      expect(ruby_processor).to receive('new').with(source, anything, anything).once.and_call_original
+      expect(ruby_processor).to receive('new').with('',     anything, anything).once.and_call_original
+
+      builder.build_str(source, 'bar.rb')
+    end
+  end
+
+  describe ':prerequired' do
+    let(:options) { {prerequired: ['foo']} }
+
+    it 'compiles them as empty files' do
+      source = 'require "foo"'
+      builder.build_str(source, 'bar.rb')
+    end
+  end
+
+  describe ':preload' do
+    let(:options) { {preload: ['base64']} }
+
+    it 'compiles them as empty files' do
+      source = 'puts 5'
+      expect(ruby_processor).to receive('new').with(anything, './base64.rb', anything).once.and_call_original
+      expect(ruby_processor).to receive('new').with(source, anything, anything).once.and_call_original
+
+      builder.build_str(source, 'bar.rb')
+    end
+  end
+
+  describe 'dup' do
+    it 'duplicates internal structures' do
+      b2 = builder.dup
+      b2.should_not equal(builder)
+      [:stubs, :preload, :processors, :path_reader, :prerequired, :compiler_options, :processed].each do |m|
+        b2.send(m).should_not equal(builder.send(m))
+      end
+    end
+  end
+
+  describe 'requiring a native .js file' do
+    it 'can be required without specifying extension' do
+      builder.build_str('require "corelib/runtime"', 'foo')
+      expect(builder.to_s).to start_with("(function(global_object)")
+    end
+
+    it 'can be required specifying extension' do
+      builder.build_str('require "corelib/runtime.js"', 'foo')
+      expect(builder.to_s).to start_with("(function(global_object)")
+    end
+  end
+
+  it 'defaults config from Opal::Config' do
+    Opal::Config.arity_check_enabled = false
+    expect(Opal::Config.arity_check_enabled).to eq(false)
+    expect(Opal::Config.compiler_options[:arity_check]).to eq(false)
+    builder = described_class.new
+    builder.build_str('def foo; end', 'foo')
+    expect(builder.to_s).not_to include('$$parameters: []')
+
+    Opal::Config.arity_check_enabled = true
+    expect(Opal::Config.arity_check_enabled).to eq(true)
+    expect(Opal::Config.compiler_options[:arity_check]).to eq(true)
+    builder = described_class.new
+    builder.build_str('def foo; end', 'foo')
+    expect(builder.to_s).to include('$$parameters: []')
+  end
+
+  describe '#missing_require_severity' do
+    it 'defaults to warning' do
+      expect(builder.missing_require_severity).to eq(:error)
+    end
+
+    context 'when set to :warning' do
+      let(:options) { {missing_require_severity: :warning} }
+      it 'warns the user' do
+        expect(builder.missing_require_severity).to eq(:warning)
+        expect(builder).to receive(:warn) { |message| expect(message).to start_with(%{can't find file: "non-existen-file"}) }.at_least(1)
+        builder.build_str("require 'non-existen-file'", 'foo.rb')
+      end
+    end
+
+    context 'when set to :ignore' do
+      let(:options) { {missing_require_severity: :ignore} }
+      it 'does nothing' do
+        expect(builder.missing_require_severity).to eq(:ignore)
+        expect(builder).not_to receive(:warn)
+        expect{ builder.build_str("require 'non-existen-file'", 'foo.rb') }.not_to raise_error
+      end
+    end
+
+    context 'when set to :error' do
+      let(:options) { {missing_require_severity: :error} }
+      it 'raises MissingRequire' do
+        expect(builder.missing_require_severity).to eq(:error)
+        expect(builder).not_to receive(:warn)
+        expect{ builder.build_str("require 'non-existen-file'", 'foo.rb') }.to raise_error(described_class::MissingRequire)
+      end
+    end
+  end
+
+  describe ':requirable' do
+    it 'it uses relative paths as module names' do
+      expect(builder.build('stringio', requirable: true).to_s).to include(%{Opal.modules["stringio"]})
+    end
+  end
+
+  describe ':requirable' do
+    it 'it uses front slash as module name' do
+      expect(builder.build('opal/platform', requirable: true).to_s).to include(%{Opal.modules["opal/platform"]})
+    end
+  end
+end
diff --git a/spec/lib/cli_runners/server_spec.rb b/spec/lib/cli_runners/server_spec.rb
new file mode 100644
index 00000000..25955840
--- /dev/null
+++ b/spec/lib/cli_runners/server_spec.rb
@@ -0,0 +1,25 @@
+require 'lib/spec_helper'
+require 'opal/cli_runners'
+require 'rack/test'
+
+RSpec.describe Opal::CliRunners::Server do
+  include Rack::Test::Methods
+
+  def app
+    @app
+  end
+
+  it 'starts a server for the given code' do
+    expect(Rack::Server).to receive(:start) do |options|
+      @app = options[:app]
+      expect(options[:Port]).to eq(1234)
+    end
+
+    builder = Opal::Builder.new
+    builder.build_str("puts 123", "app.rb")
+    described_class.call(builder: builder, options: {port: 1234})
+
+    get '/cli_runner.js'
+    expect(last_response.body).to include(".$puts(123)")
+  end
+end
diff --git a/spec/lib/cli_runners_spec.rb b/spec/lib/cli_runners_spec.rb
new file mode 100644
index 00000000..6e22a5a4
--- /dev/null
+++ b/spec/lib/cli_runners_spec.rb
@@ -0,0 +1,16 @@
+require 'lib/spec_helper'
+require 'opal/cli_runners'
+
+RSpec.describe Opal::CliRunners do
+  around do |example|
+    original_register = described_class.instance_variable_get :@register
+    example.run
+    described_class.instance_variable_set :@register, original_register
+  end
+
+  describe '.alias_runner' do
+    it 'aliases between runner names' do
+      expect(described_class[:node]).to eq(described_class[:nodejs])
+    end
+  end
+end
diff --git a/spec/lib/cli_spec.rb b/spec/lib/cli_spec.rb
new file mode 100644
index 00000000..2a01038b
--- /dev/null
+++ b/spec/lib/cli_spec.rb
@@ -0,0 +1,256 @@
+require 'lib/spec_helper'
+require 'opal/cli'
+require 'stringio'
+require 'tmpdir'
+
+RSpec.describe Opal::CLI do
+  let(:file)    { File.expand_path('../fixtures/opal_file.rb', __FILE__) }
+  let(:options) { {} }
+  subject(:cli) { described_class.new(options) }
+
+  context 'with a file' do
+    let(:options) { {:file => File.open(file)} }
+
+    it 'runs the file' do
+      expect_output_of{ subject.run }.to eq("hi from opal!\n")
+    end
+
+    context 'with lib_only: true' do
+      let(:options) { super().merge lib_only: true }
+
+      it 'raises ArgumentError' do
+        expect{subject.run}.to raise_error(ArgumentError)
+      end
+    end
+  end
+
+  describe ':evals option' do
+    context 'without evals and paths' do
+      it 'raises ArgumentError' do
+        expect { subject.run }.to raise_error(ArgumentError)
+      end
+
+      context 'with lib_only: true and opal require' do
+        let(:options) { super().merge lib_only: true }
+
+        it 'does not raise an error' do
+          expect{subject.run}.not_to raise_error
+        end
+      end
+    end
+
+    context 'with one eval' do
+      let(:options) { {:evals => ['puts "hello"']} }
+
+      it 'executes the code' do
+        expect_output_of{ subject.run }.to eq("hello\n")
+      end
+
+      context 'with lib_only: true' do
+        let(:options) { super().merge lib_only: true }
+
+        it 'raises ArgumentError' do
+          expect{subject.run}.to raise_error(ArgumentError)
+        end
+      end
+    end
+
+    context 'with many evals' do
+      let(:options) { {:evals => ['puts "hello"', 'puts "ciao"']} }
+
+      it 'executes the code' do
+        expect_output_of{ subject.run }.to eq("hello\nciao\n")
+      end
+    end
+  end
+
+  describe ':no_exit option' do
+    context 'when false' do
+      let(:options) { {no_exit: false, runner: :compiler, evals: ['']} }
+      it 'appends a Kernel#exit at the end of the source' do
+        expect_output_of{ subject.run }.to include(".$exit()")
+      end
+    end
+
+    context 'when true' do
+      let(:options) { {no_exit: true, runner: :compiler, evals: ['']} }
+      it 'appends a Kernel#exit at the end of the source' do
+        expect_output_of{ subject.run }.not_to include(".$exit();")
+      end
+    end
+  end
+
+  describe ':lib_only option' do
+    context 'when false' do
+      let(:options) { {lib_only: false, runner: :compiler, evals: [''], skip_opal_require: true, no_exit: true} }
+      it 'appends an empty code block at the end of the source' do
+        expect_output_of{ subject.run }.to include("function(Opal)")
+      end
+    end
+
+    context 'when true' do
+      let(:options) { {lib_only: true, runner: :compiler, no_exit: true} }
+      it 'appends code block at the end of the source' do
+        expect_output_of{ subject.run }.not_to eq("\n")
+      end
+
+      context 'without any require' do
+        let(:options) { {lib_only: true, runner: :compiler, skip_opal_require: true, no_exit: true} }
+        it 'raises ArgumentError' do
+          expect{subject.run}.to raise_error(ArgumentError)
+        end
+      end
+    end
+  end
+
+  describe ':requires options' do
+    context 'with an absolute path' do
+      let(:options) { {:requires => [file], :evals => ['']} }
+      it 'requires the file' do
+        expect_output_of{ subject.run }.to eq("hi from opal!\n")
+      end
+    end
+
+    context 'with a path relative to a load path' do
+      let(:dir)      { File.dirname(file) }
+      let(:filename) { File.basename(file) }
+      let(:options)  { {:load_paths => [dir], :requires => [filename], :evals => ['']} }
+      it 'requires the file' do
+        expect_output_of{ subject.run }.to eq("hi from opal!\n")
+      end
+    end
+  end
+
+  describe ':rbrequires options' do
+    context 'when set' do
+      let(:options) { {:rbrequires => ["some_nonexisting_require"], :evals => [''] } }
+      it 'requires the file before compiling' do
+        expect{ subject.run }.to raise_error(LoadError)
+      end
+    end
+  end
+
+  describe ':gems options' do
+    context 'with a Gem name' do
+      let(:dir)      { File.dirname(file) }
+      let(:filename) { File.basename(file) }
+      let(:gem_name) { 'ast' }
+      let(:options)  { {:gems => [gem_name], :evals => ['']} }
+
+      it "adds the gem's lib paths to Opal.path" do
+        builder = cli.builder
+
+        spec = Gem::Specification.find_by_name(gem_name)
+        spec.require_paths.each do |require_path|
+          require_path = File.join(spec.gem_dir, require_path)
+          expect(builder.path_reader.send(:file_finder).paths).to include(require_path)
+        end
+      end
+    end
+  end
+
+  describe ':stubs options' do
+    context 'with a stubbed file' do
+      let(:dir)      { File.dirname(file) }
+      let(:filename) { File.basename(file) }
+      let(:stub_name) { 'an_unparsable_lib' }
+      let(:options)  { {:stubs => [stub_name], :evals => ["require #{stub_name.inspect}"]} }
+
+      it "adds the gem's lib paths to Opal.path" do
+        expect_output_of{ subject.run }.to eq('')
+      end
+    end
+  end
+
+  describe ':verbose option' do
+    let(:options)  { {:verbose => true, :evals => ['']} }
+
+    it 'sets the verbose flag (currently unused)' do
+      expect(cli.verbose).to eq(true)
+    end
+  end
+
+  describe ':runner option' do
+    context 'when :compile' do
+      let(:options)  { {runner: :compiler, evals: ['puts 2342']} }
+
+      it 'outputs the compiled javascript' do
+        expect_output_of{ subject.run }.to include(".$puts(2342)")
+        expect_output_of{ subject.run }.not_to include("2342\n")
+      end
+
+      context 'with the :map_file runner option' do
+        let(:map_file) { "#{Dir.mktmpdir 'opal-map'}/file.map" }
+        let(:runner_options)  { { map_file: map_file } }
+        let(:options) { super().merge(runner_options: runner_options) }
+
+        it 'writes the map file to the specified path' do
+          expect_output_of{ subject.run }.to include(".$puts(2342)")
+          expect_output_of{ subject.run }.not_to include("2342\n")
+          expect(File.read(map_file)).to include(%{"version":3})
+        end
+      end
+    end
+
+    # TODO: test more runners
+  end
+
+  describe ':load_paths options' do
+    let(:dir)      { File.dirname(file) }
+    let(:filename) { File.basename(file) }
+    let(:options)  { {:load_paths => [dir], :requires => [filename], :evals => ['']} }
+    it 'requires files' do
+      expect_output_of{ subject.run }.to eq("hi from opal!\n")
+    end
+  end
+
+  describe ':sexp option' do
+    let(:options) { {evals: ['puts 4'], sexp: true} }
+    it 'prints syntax expressions for the given code' do
+      expect_output_of{ subject.run }.to eq("s(:top,\n  s(:send, nil, :puts,\n    s(:int, 4)))\n")
+    end
+  end
+
+  describe ':parse_comments option' do
+    let(:code) do
+      <<-CODE
+        # multiline
+        # comment
+        def m
+        end
+      CODE
+    end
+    let(:options) { { parse_comments: true, evals: [code], runner: :compiler } }
+
+    it 'sets $$comment prop for compiled methods' do
+      expect_output_of { subject.run }.to include('$$comments: ["# multiline", "# comment"]')
+    end
+  end
+
+  describe ':enable_source_location' do
+    let(:file) { File.expand_path('../fixtures/source_location_test.rb', __FILE__) }
+    let(:options) { { enable_source_location: true, runner: :compiler, file: File.open(file) } }
+
+    it 'sets $$source_location prop for compiled methods' do
+      expect_output_of { subject.run }.to include("source_location_test.rb', 6]")
+    end
+  end
+
+  private
+
+  def expect_output_of
+    @output, _result = output_and_result_of { yield }
+    expect(@output)
+  end
+
+  def output_and_result_of
+    fake_stdout = StringIO.new
+    stdout = described_class.stdout
+    described_class.stdout = fake_stdout
+    result = yield
+    output = fake_stdout.tap(&:rewind).read
+    return output, result
+  ensure
+    described_class.stdout = stdout
+  end
+end
diff --git a/spec/lib/compiler_spec.rb b/spec/lib/compiler_spec.rb
new file mode 100644
index 00000000..4ea03ba1
--- /dev/null
+++ b/spec/lib/compiler_spec.rb
@@ -0,0 +1,715 @@
+require 'lib/spec_helper'
+require 'support/match_helpers'
+
+RSpec.describe Opal::Compiler do
+  describe 'regexp' do
+    it 'should escape regexp' do
+      expect_compiled("%r{^/{4,}$}").to include('/^\/{4,}$/')
+      expect_compiled('/\\\\"/').to include('/\\\\"/')
+    end
+  end
+
+  describe 'requiring' do
+    it 'calls #require' do
+      expect_compiled("require 'pippo'").to include('self.$require("pippo")')
+    end
+  end
+
+  describe 'requirable' do
+    it 'executes the file' do
+      expect_compiled("").to include('(function(Opal) {')
+      expect_compiled("").to start_with('Opal.queue(function(Opal) {')
+      expect_compiled("").to end_with("});\n")
+    end
+
+    it 'puts the compiled into "Opal.modules"' do
+      options = { :requirable => true, :file => "pippo" }
+      expect_compiled("", options).to include('Opal.modules["pippo"] = function(Opal) {')
+      expect_compiled("", options).to end_with("};\n")
+    end
+  end
+
+  it "should compile simple ruby values" do
+    expect_compiled("3.142").to include("return 3.142")
+    expect_compiled("123e1").to include("return 1230")
+    expect_compiled("123E+10").to include("return 1230000000000")
+    expect_compiled("false").to include("return false")
+    expect_compiled("true").to include("return true")
+    expect_compiled("0;nil").to include("return nil") # NB: Empty nil return is compiled-out
+  end
+
+  it "should compile ruby strings" do
+    expect_compiled('"hello world"').to include('return "hello world"')
+    expect_compiled('"hello #{100}"').to include('"hello "', '100')
+  end
+
+  it "should compile ruby strings with escapes" do
+    expect_compiled('"hello \e"').to include('\u001b')
+    expect_compiled('"hello \e#{nil}"').to include('\u001b')
+  end
+
+  it "should compile ruby ranges" do
+    expect_compiled('1..1').to include('$range(1, 1, false)')
+    expect_compiled('1...1').to include('$range(1, 1, true)')
+    expect_compiled('..1').to include('$range(nil, 1, false)')
+    expect_compiled('...1').to include('$range(nil, 1, true)')
+    expect_compiled('1..').to include('$range(1, nil, false)')
+    expect_compiled('1...').to include('$range(1, nil, true)')
+    # Following return Opal.range.$new instead of $range. Some also miss a space.
+    expect_compiled('nil..1').to include('(nil, 1, false)')
+    expect_compiled('nil...1').to include('(nil,1, true)')
+    expect_compiled('"a"..nil').to include('("a", nil, false)')
+    expect_compiled('"a"...nil').to include('("a",nil, true)')
+    expect_compiled('..nil').to include('(nil, nil, false)')
+    expect_compiled('...nil').to include('(nil,nil, true)')
+  end
+
+  it "should compile method calls" do
+    expect_compiled("self.inspect").to include("$inspect()")
+    expect_compiled("self.map { |a| a + 10 }").to include("'map'")
+  end
+
+  it "adds method missing stubs" do
+    expect_compiled("self.puts 'hello'").to include("Opal.add_stubs('puts')")
+  end
+
+  it 'adds method missing stubs with operators' do
+    expect_compiled("class Foo; end; Foo.new > 5").to include("Opal.add_stubs('>,new')")
+  end
+
+  it "should compile constant lookups" do
+    expect_compiled("Object").to include("Object")
+    expect_compiled("Array").to include("Array")
+  end
+
+  it "should compile undef calls" do
+    expect_compiled("undef a").to include("Opal.udef(self, '$' + \"a\")")
+    expect_compiled("undef a,b").to match(/Opal.udef\(self, '\$' \+ "a"\);.*Opal.udef\(self, '\$' \+ "b"\);/m)
+  end
+
+  describe "method names" do
+    it "generates a named function for method" do
+      expect_compiled("def test_method; end").to include("function $$test_method()")
+    end
+
+    context "when function name is reserved" do
+      it "generates a valid named function for method" do
+        expect_compiled("def Array; end").to include("function $$Array()")
+      end
+    end
+
+    context "when function name is not valid" do
+      it "generates a name in a safe way" do
+        expect_compiled("def test_method?; end").to include("function $test_method$ques$1()")
+      end
+    end
+  end
+
+  describe "debugger special method" do
+    it "generates debugger keyword in javascript" do
+      expect_compiled("debugger").to include("debugger")
+      expect_compiled("debugger").to_not include("$debugger")
+    end
+  end
+
+  describe "extracting __END__ content" do
+    shared_examples "it extracts __END__" do |source, expected_eof_content|
+      it "extracts #{expected_eof_content.inspect} from #{source.inspect}" do
+        compiler = Opal::Compiler.new(source)
+        compiler.parse
+        expect(compiler.eof_content).to eq(expected_eof_content)
+      end
+    end
+
+    include_examples "it extracts __END__", "code", nil
+    include_examples "it extracts __END__", "code\n__END_", nil
+    include_examples "it extracts __END__", "code\n__END__", ""
+    include_examples "it extracts __END__", "code\n\n\n__END__", ""
+    include_examples "it extracts __END__", "code\n__END__data", nil
+    include_examples "it extracts __END__", "code\n__END__\ndata", "data"
+    include_examples "it extracts __END__", "code\n__END__\nline1\nline2", "line1\nline2"
+    include_examples "it extracts __END__", "code\n__END__\nline1\nline2\n", "line1\nline2\n"
+    include_examples "it extracts __END__", "code\n__END__\nline1\nline2\n", "line1\nline2\n"
+    include_examples "it extracts __END__", "code\n __END__\ndata", nil
+    include_examples "it extracts __END__", "\"multiline string\n__END__\nwith data separator\"\n__END__\ndata", "data"
+  end
+
+  describe "DATA special variable" do
+    it "is not a special case unless __END__ part present in source" do
+      expect_compiled("DATA").to include("DATA")
+      expect_compiled("DATA\nMALFORMED__END__").to include("DATA")
+      expect_compiled("DATA\n__END__").to_not include("DATA")
+    end
+
+    it "DATA gets compiled as a reference to special $__END__ variable" do
+      expect_compiled("a = DATA\n__END__").to include("a = $__END__")
+    end
+
+    it "causes the compiler to create a reference to special __END__ variable" do
+      expect_compiled("DATA\n__END__\nFord Perfect").to include("$__END__ = ")
+    end
+
+    it "does not create a reference to __END__ vairbale unless __END__ content present" do
+      expect_compiled("DATA").to_not include("$__END__ = ")
+    end
+  end
+
+  describe "escapes in x-strings" do
+    it "compiles the exscapes directly as appearing in x-strings" do
+      expect_compiled('`"hello\nworld"`').to include('"hello\nworld"')
+      expect_compiled('%x{"hello\nworld"}').to include('"hello\nworld"')
+    end
+  end
+
+  describe 'pre-processing require-ish methods' do
+    describe '#require' do
+      it 'parses and resolve #require argument' do
+        compiler = compiler_for(%Q{require "#{__FILE__}"})
+        expect(compiler.requires).to eq([__FILE__])
+      end
+    end
+
+    describe '#autoload' do
+      it 'parses and resolve second #autoload arguments in top scope' do
+        compiler = compiler_for(%Q{autoload :Whatever, "#{__FILE__}"})
+        expect(compiler.requires).to eq([__FILE__])
+      end
+
+      it 'parses and resolve second #autoload arguments' do
+        compiler = compiler_for(%Q{class Foo; autoload :Whatever, "#{__FILE__}"; end})
+        expect(compiler.requires).to eq([__FILE__])
+      end
+    end
+
+    describe '#require_relative' do
+      it 'parses and resolve #require_relative argument' do
+        compiler = compiler_for(%Q{require_relative "./#{File.basename(__FILE__)}"}, file: __FILE__)
+        expect(compiler.requires).to eq([__FILE__])
+      end
+    end
+
+    describe '#require_tree' do
+      require 'pathname'
+
+      it 'parses and resolve #require argument' do
+        file = Pathname(__FILE__).join('../fixtures/require_tree_test.rb')
+
+        compiler = compiler_for(file.read)
+        expect(compiler.required_trees).to eq(['../fixtures/required_tree_test'])
+      end
+    end
+  end
+
+  describe 'truthy check' do
+    context 'no parentheses' do
+      context 'with operators' do
+        it 'excludes nil check for primitives' do
+          expect_compiled('foo = 42 if 2 > 3').to include('if ($rb_gt(2, 3))')
+          expect_compiled('foo = 42 if 2.5 > 3.5').to include('if ($rb_gt(2.5, 3.5))')
+          expect_compiled('foo = 42 if true > false').to include('if ($rb_gt(true, false))')
+        end
+
+        it 'adds nil check for strings' do
+          expect_compiled('foo = 42 if "test" > "bar"').to include('if ($truthy($rb_gt("test", "bar")))')
+        end
+
+        it 'adds nil check for lvars' do
+          expect_compiled("bar = 4\nfoo = 42 if bar > 5").to include('if ($truthy($rb_gt(bar, 5)))')
+        end
+
+        it 'adds nil check for constants' do
+          expect_compiled("foo = 42 if Test > 4").to include("if ($truthy($rb_gt($$('Test'), 4))) ")
+        end
+
+        it 'converts each == call inside if to an $eqeq wrapper, which does a truthy check' do
+          expect_compiled('foo = 42 if 2 == 3').to include("if ($eqeq(2, 3))")
+          expect_compiled('foo = 42 if 2.5 == 3.5').to include("if ($eqeq(2.5, 3.5))")
+          expect_compiled('foo = 42 if true == false').to include("if ($eqeq(true, false))")
+          expect_compiled('foo = 42 if "test" == "bar"').to include("if ($eqeq(\"test\", \"bar\"))")
+          expect_compiled("bar = 4\nfoo = 42 if bar == 5").to include("if ($eqeq(bar, 5))")
+          expect_compiled("foo = 42 if Test == 4").to include("if ($eqeq($$('Test'), 4))")
+          expect_compiled("bar = 4\nfoo = 42 if bar == 5").to include("if ($eqeq(bar, 5))")
+        end
+
+        it "doesn't convert ==/=== calls to $eqeq(eq) wrappers outside of an if" do
+          expect_compiled("bar == 5").not_to include("$eqeq(bar, 5)")
+        end
+
+        it 'converts each === call inside if to an $eqeqeq wrapper, which does a truthy check' do
+          expect_compiled('foo = 42 if 2 === 3').to include("if ($eqeqeq(2, 3))")
+          expect_compiled('foo = 42 if 2.5 === 3.5').to include("if ($eqeqeq(2.5, 3.5))")
+          expect_compiled('foo = 42 if true === false').to include("if ($eqeqeq(true, false))")
+          expect_compiled('foo = 42 if "test" === "bar"').to include("if ($eqeqeq(\"test\", \"bar\"))")
+          expect_compiled("bar = 4\nfoo = 42 if bar === 5").to include("if ($eqeqeq(bar, 5))")
+          expect_compiled("foo = 42 if Test === 4").to include("if ($eqeqeq($$('Test'), 4))")
+          expect_compiled("bar = 4\nfoo = 42 if bar === 5").to include("if ($eqeqeq(bar, 5))")
+        end
+      end
+
+      context 'without operators' do
+        it 'adds nil check for primitives' do
+          expect_compiled('foo = 42 if 2').to include('if ($truthy(2))')
+          expect_compiled('foo = 42 if 2.5').to include('if ($truthy(2.5))')
+          expect_compiled('foo = 42 if true').to include('if ($truthy(true))')
+        end
+
+        it 'adds nil check for boolean method calls' do
+          expect_compiled('foo = 42 if true.something').to include('if ($truthy(true.$something()))')
+        end
+
+        it 'adds nil check for strings' do
+          expect_compiled('foo = 42 if "test"').to include('if ($truthy("test"))')
+        end
+
+        it 'adds nil check for lvars' do
+          expect_compiled("bar = 4\nfoo = 42 if bar").to include('if ($truthy(bar))')
+        end
+
+        it 'adds nil check for constants' do
+          expect_compiled("foo = 42 if Test").to include("if ($truthy($$('Test')))")
+        end
+      end
+    end
+
+    context 'parentheses' do
+      context 'with operators' do
+        it 'adds nil check for strings' do
+          expect_compiled('foo = 42 if ("test" > "bar")').to include('if ($truthy($rb_gt("test", "bar"))')
+        end
+
+        it 'adds nil check for lvars' do
+          expect_compiled("bar = 4\nfoo = 42 if (bar > 5)").to include('if ($truthy($rb_gt(bar, 5))')
+        end
+
+        it 'converts == expressions to $eqeq checks' do
+          expect_compiled('foo = 42 if (2 == 3)').to include("if ($eqeq(2, 3))")
+          expect_compiled('foo = 42 if (2.5 == 3.5)').to include("if ($eqeq(2.5, 3.5))")
+          expect_compiled('foo = 42 if (true == false)').to include("if ($eqeq(true, false))")
+          expect_compiled('foo = 42 if ("test" == "bar")').to include("if ($eqeq(\"test\", \"bar\")")
+          expect_compiled("bar = 4\nfoo = 42 if (bar == 5)").to include("if ($eqeq(bar, 5))")
+          expect_compiled("foo = 42 if (Test == 4)").to include("if ($eqeq($$('Test'), 4))")
+        end
+      end
+
+      context 'without operators' do
+        it 'adds nil check for primitives' do
+          expect_compiled('foo = 42 if (2)').to include('if ($truthy(2)')
+          expect_compiled('foo = 42 if (2.5)').to include('if ($truthy(2.5)')
+          expect_compiled('foo = 42 if (true)').to include('if ($truthy(true)')
+        end
+
+        it 'adds nil check for boolean method calls' do
+          expect_compiled('foo = 42 if (true.something)').to include('if ($truthy(true.$something())')
+        end
+
+        it 'adds nil check for strings' do
+          expect_compiled('foo = 42 if ("test")').to include('if ($truthy("test")')
+        end
+
+        it 'adds nil check for lvars' do
+          expect_compiled("bar = 4\nfoo = 42 if (bar)").to include('if ($truthy(bar)')
+        end
+
+        it 'adds nil check for constants' do
+          expect_compiled("foo = 42 if (Test)").to include("if ($truthy($$('Test'))")
+        end
+      end
+    end
+  end
+
+  describe 'Regexp flags' do
+    it 'skips the unsupported ones' do
+      expect_compiled("/foobar/nix").to include("/foobar/i")
+    end
+  end
+
+  describe 'x-strings' do
+    describe 'semicolons handling' do
+      def compiling(code, &block)
+        compiler = Opal::Compiler.new(code)
+        yield compiler
+      end
+
+      it "respects JS returns not doubling the trailing semicolon" do
+        expect_compiled(%q{
+          def foo
+            `return bar(baz)`
+          end
+        }).to include("  return bar(baz);\n")
+
+        expect_compiled(%q{
+          def foo
+            %x{return bar(baz)}
+          end
+        }).to include("  return bar(baz);\n")
+
+        expect_compiled(%q{
+          def foo
+            %x{return bar(baz);}
+          end
+        }).to include("  return bar(baz);\n")
+
+        expect_compiled(%q{
+          def foo
+            %x{
+              return bar(baz)
+            }
+          end
+        }).to include("  return bar(baz);\n")
+
+        expect_compiled(%q{
+          def foo
+            %x{
+              return bar(baz);
+            }
+          end
+        }).to include("  return bar(baz);\n")
+
+        expect_compiled(%q{
+          def foo
+            789
+            `#{123 + bar} * 456;`
+          end
+        }).to include("  return $rb_plus(123, self.$bar()) * 456;\n")
+
+        expect_compiled(%q{
+          def foo
+            789
+            `#$bar * 456`
+          end
+        }).to include("  return $gvars.bar * 456;\n")
+
+        expect_compiled(%q{
+          def foo
+            789
+            `#@bar * 456`
+          end
+        }).to include("  return self.bar * 456;\n")
+
+        expect_compiled(%q{
+          def foo
+            789
+            `456 * #@bar`
+          end
+        }).to include("  return 456 * self.bar;\n")
+
+        expect_compiled(%q{
+          if `compare === nil`
+            raise ArgumentError, "comparison of #{a.class} with #{b.class} failed"
+          end
+        }).to include("  if ($truthy(compare === nil)) {\n")
+
+        expect_compiled(%q{
+          def <<(count)
+            count = Opal.coerce_to! count, Integer, :to_int
+            `#{count} > 0 ? self << #{count} : self >> -#{count}`
+          end
+        }).to include("  return count > 0 ? self << count : self >> -count;\n")
+
+        expect_compiled(%q{
+          def self.exist? path
+            path = path.path if path.respond_to? :path
+            `return executeIOAction(function(){return __fs__.existsSync(#{path})})`
+          end
+        }).to include("  return executeIOAction(function(){return __fs__.existsSync(path)});\n")
+
+        expect_compiled(%q{
+          def self.exist? path
+            path = path.path if path.respond_to? :path
+            `executeIOAction(function(){return __fs__.existsSync(#{path})})`
+          end
+        }).to include("  return executeIOAction(function(){return __fs__.existsSync(path)});\n")
+
+        expect_compiled(%q{
+          def self.exist? path
+            path = path.path if path.respond_to? :path
+            `return executeIOAction(function(){return __fs__.existsSync(#{path})});`
+          end
+        }).to include("  return executeIOAction(function(){return __fs__.existsSync(path)});\n")
+
+        expect_compiled(%q{
+          def self.exist? path
+            path = path.path if path.respond_to? :path
+            `executeIOAction(function(){return __fs__.existsSync(#{path})});`
+          end
+        }).to include("  return executeIOAction(function(){return __fs__.existsSync(path)});\n")
+      end
+
+      it 'warns if a semicolon is used in a single line' do
+        expect_number_of_warnings(%{a = `1;`}).to              eq(1)
+        expect_number_of_warnings(%{a = `1;`; return}).to      eq(1)
+        expect_number_of_warnings(%{a = `1;`}).to              eq(1)
+        expect_number_of_warnings(%{a = ` 1; `}).to            eq(1)
+        expect_number_of_warnings(%{a = %x{\n 1; \n}}).to      eq(1)
+        expect_number_of_warnings(%{def foo; ` 1;  `; end}).to eq(1)
+      end
+
+      it 'does not warn for statements' do
+        expect_number_of_warnings(%{`foo;`; return}).to        eq(0)
+        expect_number_of_warnings(%{`foo;`; 123}).to           eq(0)
+      end
+
+      it 'does not warn for multiline x-strings' do
+        expect_number_of_warnings(%{a = `1;\n2;`}).to          eq(0)
+        expect_number_of_warnings(%{a = `1;\n2;3; `}).to       eq(0)
+        expect_number_of_warnings(%{def foo;` 1;\n  `;end}).to eq(1)
+      end
+    end
+
+    specify 'when empty' do
+      expect_compiled(%q{
+        %x{
+        }
+      }).to include("return nil\n")
+
+      expect_compiled(%q{
+        %x{}
+      }).to include("return nil\n")
+
+      expect_compiled(%q{
+        `
+
+        `
+      }).to include("return nil\n")
+
+      expect_compiled(%q{
+        ``
+      }).to include("return nil\n")
+    end
+
+    def expect_number_of_warnings(code)
+      warnings_number = 0
+      compiler = Opal::Compiler.new(code)
+      allow(compiler).to receive(:warning) { warnings_number += 1}
+      compiler.compile
+      expect(warnings_number)
+    end
+  end
+
+  describe '#magic_comments' do
+    def expect_magic_comments_for(*lines)
+      expect(compiler_for(lines.join("\n")).magic_comments)
+    end
+
+    it 'extracts them in a hash' do
+      expect_magic_comments_for("").to eq({})
+
+      expect_magic_comments_for(
+        "",
+        "#     foo:true",
+        "",
+        "",
+        "",
+        "#bar : false",
+        "#baz  :qux",
+        "#biz  :boz",
+        "baz",
+      ).to eq(
+        foo: true,
+        bar: false,
+        baz: "qux",
+        biz: "boz"
+      )
+
+      expect_magic_comments_for(
+        "#baz  :qux",
+        "#biz  :boz",
+        "",
+        "baz",
+      ).to eq(
+        baz: "qux",
+        biz: "boz"
+      )
+
+      expect_magic_comments_for(
+        "#-*- baz  :qux-*-",
+        "#   -*-biz  :boz   -*-   ",
+      ).to eq(
+        baz: "qux",
+        biz: "boz"
+      )
+    end
+
+    it 'accepts complex values' do
+      expect_magic_comments_for("").to eq({})
+
+      expect_magic_comments_for(
+        "#baz:  qux,naz!",
+        "#biz : boz?  ,bux,   []=",
+        "#buz  :<<,+,!@",
+      ).to eq(
+        baz: "qux,naz!",
+        biz: "boz?  ,bux,   []=",
+        buz: "<<,+,!@",
+      )
+    end
+  end
+
+  describe 'magic encoding comment' do
+    let(:diagnostics) { [] }
+
+    around(:each) do |e|
+      original_diagnostics_consumer = Opal::Parser.default_parser_class.diagnostics_consumer
+      Opal::Parser.default_parser_class.diagnostics_consumer = ->(diagnostic) { diagnostics << diagnostic }
+      e.run
+      Opal::Parser.default_parser_class.diagnostics_consumer = original_diagnostics_consumer
+    end
+
+    let(:encoding_comment) { '' }
+    let(:string) { '' }
+
+    let(:file) do
+      <<-RUBY
+# encoding: #{encoding_comment}
+"#{string}"
+      RUBY
+    end
+
+    shared_examples 'it compiles the string as' do |expected|
+      it "compiles the string as #{expected}" do
+        expect_compiled(file).to include(expected)
+      end
+    end
+
+    shared_examples 'it re-encodes the string using $force_encoding' do
+      it 'it re-encodes the string using $force_encoding' do
+        expect_compiled(file).to include("$force_encoding")
+      end
+    end
+
+    shared_examples 'it does not re-encode the string using $force_encoding' do
+      it 'it does not re-encode the string using $force_encoding' do
+        expect_compiled(file).to_not include("$force_encoding")
+      end
+    end
+
+    shared_examples 'it does not print any warnings' do
+      it 'does not print any warnings' do
+        compile(file)
+        expect(diagnostics).to eq([])
+      end
+    end
+
+    context 'utf-8 comment' do
+      let(:encoding_comment) { 'utf-8' }
+
+      context 'valid sequence' do
+        let(:string) { 'λ' }
+
+        include_examples 'it compiles the string as', 'λ'.inspect
+        include_examples 'it does not re-encode the string using $force_encoding'
+        include_examples 'it does not print any warnings'
+      end
+
+      context 'invalid sequence' do
+        let(:string) { "\xFF" }
+
+        it 'raises an error' do
+          expect {
+            compiled(file)
+          }.to raise_error(EncodingError, 'invalid byte sequence in UTF-8')
+        end
+      end
+    end
+
+    context 'ascii-8bit comment' do
+      let(:encoding_comment) { 'ascii-8bit' }
+
+      context 'valid sequence' do
+        let(:string) { "\xFF" }
+
+        include_examples 'it compiles the string as', '$enc("\xFF", "ASCII-8BIT")'
+        include_examples 'it does not print any warnings'
+      end
+
+      context 'unicode sequence' do
+        let(:string) { 'λ' }
+        encoded_string = 'λ'.force_encoding("ascii-8bit")
+
+        include_examples 'it compiles the string as', "$enc(#{encoded_string.inspect}, \"ASCII-8BIT\")"
+        include_examples 'it does not print any warnings'
+      end
+    end
+  end
+
+  describe 'a compilation error' do
+    context 'at compile time' do
+      it 'adds the file and line to the backtrace' do
+        error = nil
+        begin
+          compiled('BEGIN {}', file: 'foobar.js.rb')
+        rescue Opal::SyntaxError => syntax_error
+          error = syntax_error
+        end
+
+        expect(error.backtrace[0]).to eq("foobar.js.rb:in `BEGIN {}'")
+        expect(compiler_backtrace(error)[0]).to end_with(":in `error'")
+        expect(compiler_backtrace(error)[-3]).to end_with(":in `block in compile'")
+        expect(compiler_backtrace(error)[-1]).to end_with(":in `compile'")
+        expect(error.backtrace.size).to be > 1
+      end
+    end
+
+    context 'at parse time' do
+      it 'adds the file and line to the backtrace' do
+        error = nil
+        begin
+          parsed('def foo', file: 'foobar.js.rb')
+        rescue Opal::SyntaxError => syntax_error
+          error = syntax_error
+        end
+        expect(error.backtrace[0]).to eq("foobar.js.rb:1:in `def foo'")
+        expect(compiler_backtrace(error)[0]).to end_with(":in `block in parse'")
+        expect(error.backtrace.size).to be > 1
+      end
+    end
+
+    def compiler_backtrace(error)
+      error.backtrace.grep(%r{lib/opal/compiler\.rb})
+    end
+  end
+
+  describe '[regressions]' do
+    it 'accepts empty rescue within while loop' do
+      # found running bm_vm1_rescue.rb
+      # was raising: NoMethodError: undefined method `type' for nil:NilClass
+      expect{
+        compiled <<-RUBY
+          while foo
+            begin
+            rescue
+            end
+          end
+        RUBY
+      }.not_to raise_error
+    end
+
+    it 'accepts a comment as the sole body of a for loop' do
+      expect{
+        compiled <<-RUBY
+          for foo in bar
+            #
+          end
+        RUBY
+      }.not_to raise_error
+    end
+  end
+
+  def compiled(*args)
+    Opal::Compiler.new(*args).compile
+  end
+
+  def parsed(*args)
+    Opal::Compiler.new(*args).parse
+  end
+
+  alias compile compiled
+
+  def expect_compiled(*args)
+    expect(compiled(*args))
+  end
+
+  def compiler_for(*args)
+    Opal::Compiler.new(*args).tap(&:compile)
+  end
+end
diff --git a/spec/lib/config_spec.rb b/spec/lib/config_spec.rb
new file mode 100644
index 00000000..d6080c5f
--- /dev/null
+++ b/spec/lib/config_spec.rb
@@ -0,0 +1,112 @@
+require 'lib/spec_helper'
+require 'opal/config'
+
+RSpec.describe Opal::Config do
+  before { described_class.reset! }
+  after { described_class.reset! }
+
+  describe '.default_config' do
+    it 'is new each time' do
+      default_config1 = described_class.default_config
+      default_config2 = described_class.default_config
+      expect(default_config1).to eq(default_config2)
+      expect(default_config1).not_to equal(default_config2)
+      described_class.default_config[:stubbed_files] << :foo
+      expect(described_class.default_config[:stubbed_files]).to eq(Set.new)
+    end
+  end
+
+  it 'has expected default values' do
+    expect(described_class.method_missing_enabled).to   eq(true)
+    expect(described_class.const_missing_enabled).to    eq(true)
+    expect(described_class.arity_check_enabled).to      eq(false)
+    expect(described_class.freezing_stubs_enabled).to   eq(true)
+    expect(described_class.dynamic_require_severity).to eq(:warning)
+    expect(described_class.missing_require_severity).to eq(:error)
+    expect(described_class.irb_enabled).to              eq(false)
+    expect(described_class.inline_operators_enabled).to eq(true)
+    expect(described_class.source_map_enabled).to       eq(true)
+    expect(described_class.stubbed_files).to            eq(Set.new)
+  end
+
+  it 'raises an ArgumentError if provided with an unexpected value' do
+    expect{ described_class.method_missing_enabled   = :foobar }.to raise_error(ArgumentError)
+    expect{ described_class.const_missing_enabled    = :foobar }.to raise_error(ArgumentError)
+    expect{ described_class.arity_check_enabled      = :foobar }.to raise_error(ArgumentError)
+    expect{ described_class.freezing_stubs_enabled   = :foobar }.to raise_error(ArgumentError)
+    expect{ described_class.dynamic_require_severity = :foobar }.to raise_error(ArgumentError)
+    expect{ described_class.missing_require_severity = :foobar }.to raise_error(ArgumentError)
+    expect{ described_class.irb_enabled              = :foobar }.to raise_error(ArgumentError)
+    expect{ described_class.inline_operators_enabled = :foobar }.to raise_error(ArgumentError)
+    expect{ described_class.source_map_enabled       = :foobar }.to raise_error(ArgumentError)
+    expect{ described_class.stubbed_files            = :foobar }.to raise_error(ArgumentError)
+  end
+
+  it 'does not raises errors if provided with an expected value' do
+    expect{ described_class.arity_check_enabled      = false }.not_to raise_error
+    expect(described_class.arity_check_enabled).to eq(false)
+
+    expect{ described_class.arity_check_enabled      = true }.not_to raise_error
+    expect(described_class.arity_check_enabled).to eq(true)
+
+    expect{ described_class.const_missing_enabled    = false }.not_to raise_error
+    expect(described_class.const_missing_enabled).to eq(false)
+
+    expect{ described_class.const_missing_enabled    = true }.not_to raise_error
+    expect(described_class.const_missing_enabled).to eq(true)
+
+    expect{ described_class.dynamic_require_severity = :error }.not_to raise_error
+    expect(described_class.dynamic_require_severity).to eq(:error)
+
+    expect{ described_class.dynamic_require_severity = :ignore }.not_to raise_error
+    expect(described_class.dynamic_require_severity).to eq(:ignore)
+
+    expect{ described_class.dynamic_require_severity = :warning }.not_to raise_error
+    expect(described_class.dynamic_require_severity).to eq(:warning)
+
+    expect{ described_class.missing_require_severity = :error }.not_to raise_error
+    expect(described_class.missing_require_severity).to eq(:error)
+
+    expect{ described_class.missing_require_severity = :ignore }.not_to raise_error
+    expect(described_class.missing_require_severity).to eq(:ignore)
+
+    expect{ described_class.missing_require_severity = :warning }.not_to raise_error
+    expect(described_class.missing_require_severity).to eq(:warning)
+
+    expect{ described_class.freezing_stubs_enabled   = false }.not_to raise_error
+    expect(described_class.freezing_stubs_enabled).to eq(false)
+
+    expect{ described_class.freezing_stubs_enabled   = true }.not_to raise_error
+    expect(described_class.freezing_stubs_enabled).to eq(true)
+
+    expect{ described_class.inline_operators_enabled = false }.not_to raise_error
+    expect(described_class.inline_operators_enabled).to eq(false)
+
+    expect{ described_class.inline_operators_enabled = true }.not_to raise_error
+    expect(described_class.inline_operators_enabled).to eq(true)
+
+    expect{ described_class.irb_enabled              = false }.not_to raise_error
+    expect(described_class.irb_enabled).to eq(false)
+
+    expect{ described_class.irb_enabled              = true }.not_to raise_error
+    expect(described_class.irb_enabled).to eq(true)
+
+    expect{ described_class.method_missing_enabled   = false }.not_to raise_error
+    expect(described_class.method_missing_enabled).to eq(false)
+
+    expect{ described_class.method_missing_enabled   = true }.not_to raise_error
+    expect(described_class.method_missing_enabled).to eq(true)
+
+    expect{ described_class.source_map_enabled       = false }.not_to raise_error
+    expect(described_class.source_map_enabled).to eq(false)
+
+    expect{ described_class.source_map_enabled       = true }.not_to raise_error
+    expect(described_class.source_map_enabled).to eq(true)
+
+    expect{ described_class.stubbed_files            << 'foo' }.not_to raise_error
+    expect(described_class.stubbed_files).to eq(['foo'].to_set)
+
+    expect{ described_class.stubbed_files            = %w[foo bar].to_set }.not_to raise_error
+    expect(described_class.stubbed_files).to eq(%w[foo bar].to_set)
+  end
+end
diff --git a/spec/lib/dependency_resolver_spec.rb b/spec/lib/dependency_resolver_spec.rb
new file mode 100644
index 00000000..8cd9e1a8
--- /dev/null
+++ b/spec/lib/dependency_resolver_spec.rb
@@ -0,0 +1,43 @@
+require 'lib/spec_helper'
+
+RSpec.describe Opal::Nodes::CallNode::DependencyResolver do
+  let(:compiler) { double(:compiler, dynamic_require_severity: :warning) }
+
+  it "resolves simple strings to themselves" do
+    expect(resolve s(:str, 'foo')).to eq('foo')
+  end
+
+  context "using a dynamic segment not supported" do
+    it "raises a compiler error when severity is :error" do
+      compiler = double(:compiler, dynamic_require_severity: :error)
+      expect(compiler).to     receive(:dynamic_require_severity).once
+      expect(compiler).not_to receive(:warning)
+      expect(compiler).to     receive(:error).once
+      described_class.new(compiler, s(:self)).resolve
+    end
+
+    it "produces a compiler warning when severity is :warning" do
+      compiler = double(:compiler, dynamic_require_severity: :warning)
+      expect(compiler).to     receive(:dynamic_require_severity).once
+      expect(compiler).to     receive(:warning).once
+      expect(compiler).not_to receive(:error)
+      described_class.new(compiler, s(:self)).resolve
+    end
+
+    it "does not produce a warning when severity is :ignore" do
+      compiler = double(:compiler, dynamic_require_severity: :ignore)
+      expect(compiler).to     receive(:dynamic_require_severity).once
+      expect(compiler).not_to receive(:warning)
+      expect(compiler).not_to receive(:error)
+      described_class.new(compiler, s(:self)).resolve
+    end
+  end
+
+  def s(type, *children)
+    ::Opal::AST::Node.new(type, children)
+  end
+
+  def resolve(sexp)
+    described_class.new(compiler, sexp).resolve
+  end
+end
diff --git a/spec/lib/deprecations_spec.rb b/spec/lib/deprecations_spec.rb
new file mode 100644
index 00000000..496dfd83
--- /dev/null
+++ b/spec/lib/deprecations_spec.rb
@@ -0,0 +1,17 @@
+require 'lib/spec_helper'
+require 'opal/deprecations'
+
+RSpec.describe Opal::Deprecations do
+  subject { Object.new.extend described_class }
+
+  it 'defaults to warn' do
+    expect(subject).to receive(:warn)
+    subject.deprecation "there's a new api!"
+  end
+
+  it 'can be set to raise' do
+    subject.raise_on_deprecation = true
+    expect(subject).to receive(:raise)
+    subject.deprecation "there's a new api!"
+  end
+end
diff --git a/spec/lib/fixtures/complex_sprockets.js.rb.erb b/spec/lib/fixtures/complex_sprockets.js.rb.erb
new file mode 100644
index 00000000..c3389367
--- /dev/null
+++ b/spec/lib/fixtures/complex_sprockets.js.rb.erb
@@ -0,0 +1,4 @@
+#= require no_requires
+//= require jst_file
+#= require_tree ./required_tree_test
+require 'file_with_directives'
diff --git a/spec/lib/fixtures/file_with_directives.js b/spec/lib/fixtures/file_with_directives.js
new file mode 100644
index 00000000..32fb19a7
--- /dev/null
+++ b/spec/lib/fixtures/file_with_directives.js
@@ -0,0 +1,2 @@
+//= require required_file
+console.log('file with directives');
diff --git a/spec/lib/fixtures/jst_file.js.jst b/spec/lib/fixtures/jst_file.js.jst
new file mode 100644
index 00000000..e6774da7
--- /dev/null
+++ b/spec/lib/fixtures/jst_file.js.jst
@@ -0,0 +1 @@
+#= require sprockets_file
diff --git a/spec/lib/fixtures/no_requires.rb b/spec/lib/fixtures/no_requires.rb
new file mode 100644
index 00000000..a50bdad6
--- /dev/null
+++ b/spec/lib/fixtures/no_requires.rb
@@ -0,0 +1 @@
+puts 'hi there'
diff --git a/spec/lib/fixtures/opal_file.rb b/spec/lib/fixtures/opal_file.rb
new file mode 100644
index 00000000..cd7d179d
--- /dev/null
+++ b/spec/lib/fixtures/opal_file.rb
@@ -0,0 +1,2 @@
+require 'opal'
+puts 'hi from opal!'
diff --git a/spec/lib/fixtures/require_tree_test.rb b/spec/lib/fixtures/require_tree_test.rb
new file mode 100644
index 00000000..60d39dcf
--- /dev/null
+++ b/spec/lib/fixtures/require_tree_test.rb
@@ -0,0 +1,3 @@
+require_tree '../fixtures/required_tree_test'
+
+puts 5
diff --git a/spec/lib/fixtures/required_file.js b/spec/lib/fixtures/required_file.js
new file mode 100644
index 00000000..4e1e8c39
--- /dev/null
+++ b/spec/lib/fixtures/required_file.js
@@ -0,0 +1 @@
+console.log('required file');
diff --git a/spec/lib/fixtures/required_tree_test/required_file1.rb b/spec/lib/fixtures/required_tree_test/required_file1.rb
new file mode 100644
index 00000000..5b9d909d
--- /dev/null
+++ b/spec/lib/fixtures/required_tree_test/required_file1.rb
@@ -0,0 +1 @@
+p 1
diff --git a/spec/lib/fixtures/required_tree_test/required_file2.rb b/spec/lib/fixtures/required_tree_test/required_file2.rb
new file mode 100644
index 00000000..b872b657
--- /dev/null
+++ b/spec/lib/fixtures/required_tree_test/required_file2.rb
@@ -0,0 +1 @@
+p 2
diff --git a/spec/lib/fixtures/requires.rb b/spec/lib/fixtures/requires.rb
new file mode 100644
index 00000000..eb172930
--- /dev/null
+++ b/spec/lib/fixtures/requires.rb
@@ -0,0 +1,7 @@
+require 'foo'
+
+puts 'hello'
+
+require 'bar'
+
+puts 'goodbye'
diff --git a/spec/lib/fixtures/source_location_test.rb b/spec/lib/fixtures/source_location_test.rb
new file mode 100644
index 00000000..454672db
--- /dev/null
+++ b/spec/lib/fixtures/source_location_test.rb
@@ -0,0 +1,7 @@
+
+
+
+# Do not move this method
+# This file is used to test Method#source_location
+def m
+end
diff --git a/spec/lib/fixtures/source_map.rb b/spec/lib/fixtures/source_map.rb
new file mode 100644
index 00000000..ce9e2245
--- /dev/null
+++ b/spec/lib/fixtures/source_map.rb
@@ -0,0 +1 @@
+puts 'smap!'
diff --git a/spec/lib/fixtures/source_map/subfolder/other_file.rb b/spec/lib/fixtures/source_map/subfolder/other_file.rb
new file mode 100644
index 00000000..a7d86e16
--- /dev/null
+++ b/spec/lib/fixtures/source_map/subfolder/other_file.rb
@@ -0,0 +1 @@
+puts 'other!'
diff --git a/spec/lib/fixtures/sprockets_file.js.rb b/spec/lib/fixtures/sprockets_file.js.rb
new file mode 100644
index 00000000..e4e584b0
--- /dev/null
+++ b/spec/lib/fixtures/sprockets_file.js.rb
@@ -0,0 +1,3 @@
+require 'opal'
+require 'native'
+puts 'sprockets!'
diff --git a/spec/lib/fixtures/sprockets_require_tree_test.rb b/spec/lib/fixtures/sprockets_require_tree_test.rb
new file mode 100644
index 00000000..5f6c2928
--- /dev/null
+++ b/spec/lib/fixtures/sprockets_require_tree_test.rb
@@ -0,0 +1,3 @@
+#=require_tree ./required_tree_test
+
+puts 5
diff --git a/spec/lib/path_reader_spec.rb b/spec/lib/path_reader_spec.rb
new file mode 100644
index 00000000..da4d8ddf
--- /dev/null
+++ b/spec/lib/path_reader_spec.rb
@@ -0,0 +1,47 @@
+require 'lib/spec_helper'
+require 'opal/path_reader'
+
+RSpec.describe Opal::PathReader do
+  subject(:path_reader) { described_class.new }
+  let(:path) { 'opal_file' }
+  let(:full_path) { File.expand_path('../fixtures/opal_file.rb', __FILE__) }
+  let(:contents) { File.read(full_path, mode: "rb:UTF-8") }
+
+  before do
+    allow_any_instance_of(Opal::Hike::Trail).to receive(:find) {|path| nil}
+    allow_any_instance_of(Opal::Hike::Trail).to receive(:find).with(path).and_return(full_path)
+  end
+
+  describe '#paths' do
+    it 'is an Enumberable' do
+      expect(path_reader.paths).to be_an(Enumerable)
+    end
+
+    it 'includes Opal.paths' do
+      paths = path_reader.paths.to_a
+      Opal.paths.each { |path| expect(paths).to include(path) }
+    end
+  end
+
+  describe '#read' do
+    it 'reads the contents from the path' do
+      expect(path_reader.read(path)).to eq(contents)
+    end
+
+    it 'returns nil if the file is missing' do
+      expect(path_reader.read('unexpected-path!')).to be_nil
+    end
+  end
+
+  it 'works with absolute paths' do
+    expect(path_reader.read(File.expand_path(__FILE__))).not_to be_nil
+  end
+
+  it 'works with relative paths starting with ./' do
+    expect(path_reader.read('./spec/lib/spec_helper.rb')).not_to be_nil
+  end
+
+  it 'works with absolute paths' do
+    expect(path_reader.read("../#{File.basename(Dir.pwd)}/spec/lib/spec_helper.rb")).not_to be_nil
+  end
+end
diff --git a/spec/lib/paths_spec.rb b/spec/lib/paths_spec.rb
new file mode 100644
index 00000000..460c722a
--- /dev/null
+++ b/spec/lib/paths_spec.rb
@@ -0,0 +1,18 @@
+require 'lib/spec_helper'
+
+RSpec.describe 'Opal.use_gem' do
+  # Coverage probably should be improved
+
+  it 'adds require_paths of a gem to Opal paths' do
+    begin
+      Opal.use_gem 'rake'
+    rescue Opal::GemNotFound => e
+      raise(e) unless e.gem_name == 'rake'
+      skip %(Will fail if GEM_HOME has "rake" in the path, that's ok)
+    end
+
+    added_rake_paths = Opal.paths.grep(/rake/)
+    expect(added_rake_paths.size).to eq(1)
+    expect(added_rake_paths.first).to match(%r{/rake-[\d\.]+/lib$})
+  end
+end
diff --git a/spec/lib/repl_spec.rb b/spec/lib/repl_spec.rb
new file mode 100644
index 00000000..bdd3b3ed
--- /dev/null
+++ b/spec/lib/repl_spec.rb
@@ -0,0 +1,30 @@
+require 'lib/spec_helper'
+require 'opal/repl'
+
+RSpec.describe Opal::REPL do
+  describe '#eval_ruby' do
+    let(:input_and_output) { {
+      'puts 5'          => "5\n=> nil\n",
+      'a = 1'           => "=> 1\n",
+      'a += 1'          => "=> 2\n",
+      'a + 3'           => "=> 5\n",
+      'puts a + 3'      => "5\n=> nil\n",
+      '"#{a} + 3"'      => "=> \"2 + 3\"\n",
+      'puts "#{a} + 3"' => "2 + 3\n=> nil\n",
+    } }
+
+    subject(:repl) { described_class.new }
+
+    it 'evaluates user inputs' do
+      repl.colorize = false
+
+      repl.load_opal
+
+      input_and_output.each do |input, output|
+        expect { repl.eval_ruby(input) }.to output(output).to_stdout
+      end
+
+      repl.finish
+    end
+  end
+end
diff --git a/spec/lib/rewriters/base_spec.rb b/spec/lib/rewriters/base_spec.rb
new file mode 100644
index 00000000..8ae2f66d
--- /dev/null
+++ b/spec/lib/rewriters/base_spec.rb
@@ -0,0 +1,68 @@
+require 'lib/spec_helper'
+require 'support/rewriters_helper'
+require 'opal/rewriters/base'
+
+RSpec.describe Opal::Rewriters::Base do
+  include RewritersHelper
+
+  def body_ast_of(method_source)
+    def_ast = parse_without_rewriting(method_source).children.first
+    _, _, body_ast = *def_ast
+    body_ast
+  end
+
+  let(:node) { ast_of('INJECTED') } # s(:const, nil, :INJECTED)
+  let(:rewriter) { described_class.new }
+
+  describe '#prepend_to_body' do
+    context 'for empty body' do
+      it 'replaces body with provided node' do
+        body = body_ast_of('def m(a); end')
+        rewritten = rewriter.prepend_to_body(body, node)
+        expect(rewritten).to eq(body_ast_of('def m; INJECTED; end'))
+      end
+    end
+
+    context 'for single-line body' do
+      it 'prepends a node to the body and wraps it with begin; end' do
+        body = body_ast_of('def m; 1; end')
+        rewritten = rewriter.prepend_to_body(body, node)
+        expect(rewritten).to eq(body_ast_of('def m; INJECTED; 1; end'))
+      end
+    end
+
+    context 'for multi-line body' do
+      it 'prepends a node to the body' do
+        body = body_ast_of('def m(a); 1; 2; end')
+        rewritten = rewriter.prepend_to_body(body, node)
+        expect(rewritten).to eq(body_ast_of('def m; INJECTED; 1; 2; end'))
+      end
+    end
+  end
+
+  describe '#append_to_body' do
+    context 'for empty body' do
+      it 'replaces body with provided node' do
+        body = body_ast_of('def m(a); end')
+        rewritten = rewriter.append_to_body(body, node)
+        expect(rewritten).to eq(body_ast_of('def m; INJECTED; end'))
+      end
+    end
+
+    context 'for single-line body' do
+      it 'appends a node to the body and wraps it with begin; end' do
+        body = body_ast_of('def m(a); 1; end')
+        rewritten = rewriter.append_to_body(body, node)
+        expect(rewritten).to eq(body_ast_of('def m; 1; INJECTED; end'))
+      end
+    end
+
+    context 'for multi-line body' do
+      it 'appends a node to the body' do
+        body = body_ast_of('def m(a); 1; 2; end')
+        rewritten = rewriter.append_to_body(body, node)
+        expect(rewritten).to eq(body_ast_of('def m; 1; 2; INJECTED; end'))
+      end
+    end
+  end
+end
diff --git a/spec/lib/rewriters/binary_operator_assignment_spec.rb b/spec/lib/rewriters/binary_operator_assignment_spec.rb
new file mode 100644
index 00000000..80cb8195
--- /dev/null
+++ b/spec/lib/rewriters/binary_operator_assignment_spec.rb
@@ -0,0 +1,128 @@
+require 'lib/spec_helper'
+require 'support/rewriters_helper'
+
+RSpec.describe Opal::Rewriters::BinaryOperatorAssignment do
+  include RewritersHelper
+
+  use_only_described_rewriter!
+
+  before(:each) { Opal::Rewriters::BinaryOperatorAssignment.reset_tmp_counter! }
+  let(:cache_tmp_name) { :$binary_op_recvr_tmp_1 }
+  let(:cached) { s(:js_tmp, cache_tmp_name) }
+
+  context 'rewriting or_asgn and and_asgn nodes' do
+    context 'local variable' do
+      include_examples 'it rewrites source-to-source', 'a = 1; a += 2', 'a = 1; a = a + 2'
+    end
+
+    context 'instance variable' do
+      include_examples 'it rewrites source-to-source', '@a += 1', '@a = @a + 1'
+    end
+
+    context 'constant' do
+      include_examples 'it rewrites source-to-source', 'CONST += 1', 'CONST = CONST + 1'
+    end
+
+    context 'global variable' do
+      include_examples 'it rewrites source-to-source', '$g += 1', '$g = $g + 1'
+    end
+
+    context 'class variable' do
+      include_examples 'it rewrites source-to-source', '@@a += 1', '@@a = @@a + 1'
+    end
+
+    context 'simple method call' do
+      include_examples 'it rewrites source-to-source', 'recvr = 1; recvr.meth += rhs', 'recvr = 1; recvr.meth = recvr.meth + rhs'
+    end
+
+    context '[] / []= method call' do
+      include_examples 'it rewrites source-to-source', 'recvr = 1; recvr[idx] += rhs', 'recvr = 1; recvr[idx] = recvr[idx] + rhs'
+    end
+
+    context '[] / []= method call with multiple arguments' do
+      include_examples 'it rewrites source-to-source',
+        'recvr = 1; recvr[idx1, idx2] += rhs',
+          'recvr = 1; recvr[idx1, idx2] = recvr[idx1, idx2] + rhs'
+    end
+
+    context 'chain of method calls' do
+      it 'rewrites += by caching receiver to a temporary local variable' do
+        input = parse('recvr.a.b += rhs')
+        rewritten = rewrite(input).children.first
+
+        expected = s(:begin,
+          s(:lvasgn, cache_tmp_name, ast_of('recvr.a')), # cached = recvr.a
+          s(:send, cached, :b=,
+            s(:send,
+              s(:send, cached, :b),
+              :+,
+              ast_of('rhs'))))
+
+        expect(rewritten).to eq(expected)
+      end
+    end
+
+    context 'method call using safe nafigator' do
+      it 'rewrites += by caching receiver and rewriting it to if and or_asgn' do
+        input = parse('recvr&.meth += rhs')
+        rewritten = rewrite(input).children.first
+
+        expected = s(:begin,
+          s(:lvasgn, cache_tmp_name, ast_of('recvr')), # cached = recvr
+          s(:if, s(:send, cached, :nil?),              # if cached.nil?
+            s(:nil),                                   #   nil
+                                                       # else
+            s(:send, cached, :meth=,                   #   cached.meth =
+              s(:send,
+                s(:send, cached, :meth),               #     cached.meth +
+                :+,
+                ast_of('rhs')))                        #     rhs
+          ))                                           # end
+
+        expect(rewritten).to eq(expected)
+      end
+    end
+  end
+
+  context 'rewriting defined?(or_asgn) and defined?(and_asgn)' do
+    context 'local variable' do
+      include_examples 'it rewrites source-to-source', 'a = nil; defined?(a += 1)', 'a = nil; "assignment"'
+    end
+
+    context 'instance variable' do
+      include_examples 'it rewrites source-to-source', 'defined?(@a += 1)', %q("assignment")
+    end
+
+    context 'constant' do
+      include_examples 'it rewrites source-to-source', 'defined?(CONST += 1)', %q("assignment")
+    end
+
+    context 'global variable' do
+      include_examples 'it rewrites source-to-source', 'defined?($g += 1)', %q("assignment")
+    end
+
+    context 'class variable' do
+      include_examples 'it rewrites source-to-source', 'defined?(@@a += 1)', %q("assignment")
+    end
+
+    context 'simple method call' do
+      include_examples 'it rewrites source-to-source', 'defined?(recvr.meth += rhs)', %q("assignment")
+    end
+
+    context '[] / []= method call' do
+      include_examples 'it rewrites source-to-source', 'defined?(recvr[idx] += rhs)', %q("assignment")
+    end
+
+    context '[] / []= method call with multiple arguments' do
+      include_examples 'it rewrites source-to-source', 'defined?(recvr[idx1, idx2] += rhs)', %q("assignment")
+    end
+
+    context 'chain of method calls' do
+      include_examples 'it rewrites source-to-source', 'defined?(recvr.a.b.c += rhs)', %q("assignment")
+    end
+
+    context 'method call using safe nafigator' do
+      include_examples 'it rewrites source-to-source', 'defined?(recvr&.meth += rhs)', %q("assignment")
+    end
+  end
+end
diff --git a/spec/lib/rewriters/block_to_iter_spec.rb b/spec/lib/rewriters/block_to_iter_spec.rb
new file mode 100644
index 00000000..57640071
--- /dev/null
+++ b/spec/lib/rewriters/block_to_iter_spec.rb
@@ -0,0 +1,25 @@
+require 'lib/spec_helper'
+require 'support/rewriters_helper'
+
+RSpec.describe Opal::Rewriters::BlockToIter do
+  include RewritersHelper
+
+  let(:block_node) do
+    # m { |arg1| 1 }
+    s(:block,
+      s(:send, nil, :m),
+      s(:args, s(:arg, :arg1)),
+      s(:int, 1)
+    )
+  end
+
+  let(:iter_node) do
+    s(:send, nil, :m,
+      s(:iter, s(:args, s(:arg, :arg1)), s(:int, 1))
+    )
+  end
+
+  it 'rewriters s(:block) to s(:iter)' do
+    expect(rewritten(block_node)).to eq(iter_node)
+  end
+end
diff --git a/spec/lib/rewriters/dot_js_syntax_spec.rb b/spec/lib/rewriters/dot_js_syntax_spec.rb
new file mode 100644
index 00000000..968bca29
--- /dev/null
+++ b/spec/lib/rewriters/dot_js_syntax_spec.rb
@@ -0,0 +1,105 @@
+require 'lib/spec_helper'
+require 'support/rewriters_helper'
+
+RSpec.describe Opal::Rewriters::DotJsSyntax do
+  include RewritersHelper
+
+  context '.JS. syntax' do
+    let(:send_node) do
+      # a.JS.b(1)
+      s(:send,
+        s(:send, s(:lvar, :a), :JS),
+        :b,
+        s(:int, 1)
+      )
+    end
+
+    let(:dot_js_node) do
+      s(:jscall, s(:lvar, :a), :b, s(:int, 1))
+    end
+
+    it 'rewrites s(:send, s(:send, obj, :JS), :js_method, ...) to s(:jscall, obj, :js_method, ...)' do
+      expect(rewriter.process(send_node)).to eq(dot_js_node)
+    end
+  end
+
+  context '.JS[] syntax' do
+    context 'when passed one argument' do
+      let(:send_node) do
+        # a.JS[1, 2]
+        s(:send,
+          s(:send, s(:lvar, :a), :JS),
+          :[],
+          s(:int, 1)
+        )
+      end
+
+      let(:jsattr_node) do
+        s(:jsattr, s(:lvar, :a), s(:int, 1))
+      end
+
+      it 'rewrites s(:send, s(:send, obj, :JS), :[], arg) to s(:jsattr, obj, arg)' do
+        expect(rewriter.process(send_node)).to eq(jsattr_node)
+      end
+    end
+
+    context 'when passed 1+ arguments' do
+      let(:send_node) do
+        # a.JS[1, 2]
+        s(:send,
+          s(:send, s(:lvar, :a), :JS),
+          :[],
+          s(:int, 1),
+          s(:int, 2)
+        )
+      end
+
+      it 'raises syntax error' do
+        expect {
+          rewriter.process(send_node)
+        }.to raise_error(Opal::RewritingError)
+      end
+    end
+  end
+
+  context '.JS[]= syntax' do
+    context 'when passed two arguments' do
+      let(:send_node) do
+        # a.JS[1] = 2
+        s(:send,
+          s(:send, s(:lvar, :a), :JS),
+          :[]=,
+          s(:int, 1),
+          s(:int, 2)
+        )
+      end
+
+      let(:jsattr_asgn_node) do
+        s(:jsattrasgn, s(:lvar, :a), s(:int, 1), s(:int, 2))
+      end
+
+      it 'converts send node to jsattrasgn' do
+        expect(rewriter.process(send_node)).to eq(jsattr_asgn_node)
+      end
+    end
+
+    context 'when passed 2+ arguments' do
+      let(:send_node) do
+        # a.JS[1, 2] = 3
+        s(:send,
+          s(:send, s(:lvar, :a), :JS),
+          :[]=,
+          s(:int, 1),
+          s(:int, 2),
+          s(:int, 3)
+        )
+      end
+
+      it 'raises syntax error' do
+        expect {
+          rewriter.process(send_node)
+        }.to raise_error(Opal::RewritingError)
+      end
+    end
+  end
+end
diff --git a/spec/lib/rewriters/explicit_writer_return_spec.rb b/spec/lib/rewriters/explicit_writer_return_spec.rb
new file mode 100644
index 00000000..dd5ec815
--- /dev/null
+++ b/spec/lib/rewriters/explicit_writer_return_spec.rb
@@ -0,0 +1,173 @@
+require 'lib/spec_helper'
+require 'support/rewriters_helper'
+
+RSpec.describe Opal::Rewriters::ExplicitWriterReturn do
+  include RewritersHelper
+
+  let(:receiver) do
+    # self.a
+    s(:send, nil, :a)
+  end
+
+  let(:single_argument) do
+    # self.c
+    s(:send, nil, :c)
+  end
+
+  let(:multiple_arguments) do
+    # [self.d, self.e]
+    s(:array,
+      s(:send, nil, :d),
+      s(:send, nil, :e)
+    )
+  end
+
+  let(:constant_returner) do
+    # $writer[$writer.length - 1]
+    s(:jsattr,
+      s(:lvar, "$writer"),
+      s(:send, s(:jsattr, s(:lvar, "$writer"), s(:str, "length")), :-, s(:int, 1))
+    )
+  end
+
+  shared_examples 'always returns a temporary argument' do
+    it 'returns a temporary argument' do
+      expect(processed.children[2]).to eq(constant_returner)
+    end
+  end
+
+  describe 'rewriting a.b = c' do
+    let(:input) do
+      s(:send, receiver, :b=, single_argument)
+    end
+
+    it 'generates a temporary argument for a method argument' do
+      expect(processed.children[0]).to eq(
+        s(:lvasgn, "$writer", s(:array, single_argument))
+      )
+    end
+
+    it 'calls receiver with this temporary argument as a splat' do
+      expect(processed.children[1]).to eq(
+        s(:send, receiver, :b=,
+          s(:splat, s(:lvar, "$writer"))
+        )
+      )
+    end
+
+    include_examples 'always returns a temporary argument'
+  end
+
+  describe 'rewriting a.b = c, d' do
+    let(:input) do
+      s(:send, receiver, :b=, multiple_arguments)
+    end
+
+    it 'generates a temporary argument for array of method arguments' do
+      expect(processed.children[0]).to eq(
+        s(:lvasgn, "$writer", s(:array, multiple_arguments))
+      )
+    end
+
+    it 'calls receiver with this temporary argument as a splat' do
+      expect(processed.children[1]).to eq(
+        s(:send, receiver, :b=,
+          s(:splat, s(:lvar, "$writer"))
+        )
+      )
+    end
+
+    include_examples 'always returns a temporary argument'
+  end
+
+  describe "[]= method" do
+    let(:idx) { s(:send, nil, :b) }
+
+    describe 'rewriting a[b] = c' do
+      let(:input) do
+        s(:send, receiver, :[]=, idx, single_argument)
+      end
+
+      it 'generates a temporary argument for all passed method arguments' do
+        expect(processed.children[0]).to eq(
+          s(:lvasgn, "$writer", s(:array, idx, single_argument))
+        )
+      end
+
+      it 'calls receiver with this temporary argument as a splat' do
+        expect(processed.children[1]).to eq(
+          s(:send, receiver, :[]=,
+            s(:splat, s(:lvar, "$writer"))
+          )
+        )
+      end
+
+      include_examples 'always returns a temporary argument'
+    end
+
+    describe 'rewriting a[b] = c, d' do
+      let(:input) do
+        s(:send, receiver, :[]=, idx, multiple_arguments)
+      end
+
+      it 'generates a temporary argument for array of method arguments' do
+        expect(processed.children[0]).to eq(
+          s(:lvasgn, "$writer", s(:array, idx, multiple_arguments))
+        )
+      end
+
+      it 'calls receiver with this temporary argument as a splat' do
+        expect(processed.children[1]).to eq(
+          s(:send, receiver, :[]=,
+            s(:splat, s(:lvar, "$writer"))
+          )
+        )
+      end
+
+      include_examples 'always returns a temporary argument'
+    end
+  end
+
+  describe 'mass assignment' do
+    let(:input) do
+      # a, b = c, d
+      s(:masgn,
+        s(:mlhs,
+          s(:lvasgn, :a),
+          s(:lvasgn, :b)),
+        s(:array,
+          s(:send, nil, :c),
+          s(:send, nil, :d)))
+    end
+
+    it 'does not affect it' do
+      expect_no_rewriting_for(input)
+    end
+  end
+
+  describe '.JS. syntax' do
+    let(:input) do
+      # a.JS.b = c
+      s(:jscall,
+        s(:send, nil, :a), :b=,
+        s(:send, nil, :c))
+    end
+
+    it 'does not affect it' do
+      expect_no_rewriting_for(input)
+    end
+  end
+
+  describe '.JS[] syntax' do
+    let(:input) do
+      s(:jsattrasgn,
+        s(:send, nil, :a),
+        s(:sym, :b),
+        s(:send, nil, :c))
+    end
+
+    it 'does not affect it' do
+      expect_no_rewriting_for(input)
+    end
+  end
+end
diff --git a/spec/lib/rewriters/for_rewriter_spec.rb b/spec/lib/rewriters/for_rewriter_spec.rb
new file mode 100644
index 00000000..5054af0e
--- /dev/null
+++ b/spec/lib/rewriters/for_rewriter_spec.rb
@@ -0,0 +1,91 @@
+require 'lib/spec_helper'
+require 'support/rewriters_helper'
+require 'opal/rewriters/for_rewriter'
+
+RSpec.describe Opal::Rewriters::ForRewriter do
+  include RewritersHelper
+
+  before(:each) { Opal::Rewriters::ForRewriter.reset_tmp_counter! }
+
+  include_examples 'it rewrites source-to-AST', 'for i in (0..3); for j in (4..6); a = i + j; end; end', s(:begin,
+    s(:lvdeclare, :i),
+    s(:lvdeclare, :j),
+    s(:lvdeclare, :a),
+    s(:send,
+      ast_of('(0..3)'),
+      :each,
+      s(:iter,
+        s(:args,
+          s(:arg, :$for_tmp1)),
+        s(:begin,
+          s(:initialize_iter_arg, :$for_tmp1),
+          s(:lvasgn, :i,
+            s(:js_tmp, :$for_tmp1)),
+          s(:begin,
+            s(:lvdeclare, :j),
+            s(:lvdeclare, :a),
+            s(:send,
+              ast_of('(4..6)'),
+              :each,
+              s(:iter,
+                s(:args,
+                  s(:arg, :$for_tmp2)),
+                s(:begin,
+                  s(:initialize_iter_arg, :$for_tmp2),
+                  s(:lvasgn, :j,
+                    s(:js_tmp, :$for_tmp2)),
+                  s(:lvasgn, :a,
+                    s(:send,
+                      s(:lvar, :i), :+,
+                      s(:lvar, :j)
+                    )
+                  )
+                )
+              )
+            )
+          )
+        )
+      )
+    )
+  )
+
+  include_examples 'it rewrites source-to-AST', 'for i in (0..3); a = 1; b = 2; end', s(:begin,
+    s(:lvdeclare, :i),
+    s(:lvdeclare, :a),
+    s(:lvdeclare, :b),
+    s(:send,
+      ast_of('(0..3)'),
+      :each,
+      s(:iter,
+        s(:args, s(:arg, :$for_tmp1)),
+        s(:begin,
+          s(:initialize_iter_arg, :$for_tmp1),
+          s(:lvasgn, :i, s(:js_tmp, :$for_tmp1)),
+          ast_of('a = 1'),
+          ast_of('b = 2')
+        )
+      )
+    )
+  )
+
+  include_examples 'it rewrites source-to-AST', 'for i, j in obj; a = 1; b, c = 2, 3; end', s(:begin,
+    s(:lvdeclare, :i),
+    s(:lvdeclare, :j),
+    s(:lvdeclare, :a),
+    s(:lvdeclare, :b),
+    s(:lvdeclare, :c),
+    s(:send,
+      ast_of('obj'),
+      :each,
+      s(:iter,
+        s(:args, s(:arg, :$for_tmp1)),
+        s(:begin,
+          s(:initialize_iter_arg, :$for_tmp1),
+          s(:masgn, s(:mlhs, s(:lvasgn, :i), s(:lvasgn, :j)), s(:js_tmp, :$for_tmp1)),
+          ast_of('a = 1'),
+          ast_of('b, c = 2, 3')
+        )
+      )
+    )
+  )
+end
diff --git a/spec/lib/rewriters/forward_args_spec.rb b/spec/lib/rewriters/forward_args_spec.rb
new file mode 100644
index 00000000..11448c93
--- /dev/null
+++ b/spec/lib/rewriters/forward_args_spec.rb
@@ -0,0 +1,60 @@
+require 'lib/spec_helper'
+require 'support/rewriters_helper'
+require 'opal/rewriters/forward_args'
+
+RSpec.describe Opal::Rewriters::ForwardArgs do
+  include RewritersHelper
+
+  before(:each) { Opal::Rewriters::ForRewriter.reset_tmp_counter! }
+
+  correct_names = proc do |ast|
+    case ast
+    when Opal::AST::Node
+      ast.children.map do |i|
+        correct_names.(i)
+      end.yield_self { |children| s(ast.type, *children) }
+    when :fwd_rest
+      "$fwd_rest"
+    when :fwd_block
+      "$fwd_block"
+    else
+      ast
+    end
+  end
+
+  include_examples 'it rewrites source-to-AST', <<~ENDSOURCE, correct_names.(ast_of(<<~ENDDEST))
+    def forward(...)
+      other(...)
+    end
+  ENDSOURCE
+    def forward(*fwd_rest, &fwd_block)
+      other(*fwd_rest, &fwd_block)
+    end
+  ENDDEST
+
+  include_examples 'it rewrites source-to-AST', <<~ENDSOURCE, correct_names.(ast_of(<<~ENDDEST))
+    def forward(first_arg, ...)
+      other(first_arg, second_arg, ...)
+      other(other_arg, ...)
+      other(...)
+    end
+  ENDSOURCE
+    def forward(first_arg, *fwd_rest, &fwd_block)
+      other(first_arg, second_arg, *fwd_rest, &fwd_block)
+      other(other_arg, *fwd_rest, &fwd_block)
+      other(*fwd_rest, &fwd_block)
+    end
+  ENDDEST
+
+  # Not supported by the parser (nor by the rewriter which would have to rearrange the arguments)
+
+  # include_examples 'it rewrites source-to-AST', <<~ENDSOURCE, correct_names.(parse(<<~ENDDEST))
+  #   def forward(a:, ...)
+  #     other(...)
+  #   end
+  # ENDSOURCE
+  #   def forward(*fwd_rest, a:, &fwd_block)
+  #     other(*fwd_rest, &fwd_block)
+  #   end
+  # ENDDEST
+end
diff --git a/spec/lib/rewriters/hashes/key_duplicates_rewriter_spec.rb b/spec/lib/rewriters/hashes/key_duplicates_rewriter_spec.rb
new file mode 100644
index 00000000..84dba496
--- /dev/null
+++ b/spec/lib/rewriters/hashes/key_duplicates_rewriter_spec.rb
@@ -0,0 +1,47 @@
+require 'lib/spec_helper'
+require 'support/rewriters_helper'
+require 'opal/rewriters/hashes/key_duplicates_rewriter'
+
+RSpec.describe Opal::Rewriters::Hashes::KeyDuplicatesRewriter do
+  include RewritersHelper
+
+  shared_examples 'it warns' do |code, key_to_warn|
+    context "for #{code} code" do
+      it "warns about #{key_to_warn.inspect} being overwritten" do
+        expect(Kernel).to receive(:warn).with("warning: key #{key_to_warn.inspect} is duplicated and overwritten")
+
+        ast = parse_without_rewriting(code)
+        rewrite(ast)
+      end
+    end
+  end
+
+  include_examples 'it warns', '{ a: 1, a: 2 }',             :a
+  include_examples 'it warns', '{ a: 1, **{ a: 2 } }',       :a
+  include_examples 'it warns', '{ a: 1, **{ **{ a: 2 } } }', :a
+
+  include_examples 'it warns', '{ "a" => 1, "a" => 2 }',             'a'
+  include_examples 'it warns', '{ "a" => 1, **{ "a" => 2 } }',       'a'
+  include_examples 'it warns', '{ "a" => 1, **{ **{ "a" => 2 } } }', 'a'
+
+  shared_examples 'it does not warn' do |code|
+    context "for #{code} code" do
+      it "does not warn anything" do
+        expect(Kernel).to_not receive(:warn).with(/is duplicated and overwritten/)
+
+        ast = parse_without_rewriting(code)
+        rewrite(ast)
+      end
+    end
+  end
+
+  include_examples 'it does not warn', '{ a: 1 }'
+  include_examples 'it does not warn', '{ a: 1, "a" => 2 }'
+  include_examples 'it does not warn', '{ "a" => 1, a: 2 }'
+  include_examples 'it does not warn', '{ a: 1, **{ "a" => 2 } }'
+  include_examples 'it does not warn', '{ "a" => 1, **{ a: 2 } }'
+  include_examples 'it does not warn', '{ a: 1, nested: { a: 2 } }'
+
+  include_examples 'it does not warn', 'key = "key"; { "#{key}" => 1, "#{key}" => 2 }'
+  include_examples 'it does not warn', 'key = "key"; { :"#{key}" => 1, :"#{key}" => 2 }'
+end
diff --git a/spec/lib/rewriters/js_reserved_words_spec.rb b/spec/lib/rewriters/js_reserved_words_spec.rb
new file mode 100644
index 00000000..b9082d7a
--- /dev/null
+++ b/spec/lib/rewriters/js_reserved_words_spec.rb
@@ -0,0 +1,106 @@
+require 'lib/spec_helper'
+require 'support/rewriters_helper'
+
+RSpec.describe Opal::Rewriters::JsReservedWords do
+  include RewritersHelper
+
+  reserved_lvars = %i(
+    do if in for let new try var case else enum eval false
+    null this true void with break catch class const super
+    throw while yield delete export import public return
+    static switch typeof default extends finally package
+    private continue debugger function arguments interface
+    protected implements instanceof
+
+    int byte char goto long final float short double native
+    throws boolean abstract volatile transient synchronized
+
+    NaN Infinity undefined
+  )
+
+  reserved_ivars = %i(
+    @constructor @displayName
+    @hasOwnProperty @valueOf
+    @__proto__ @__parent__
+    @__noSuchMethod__ @__count__
+  )
+
+  context 'reserved lvars' do
+    reserved_lvars.each do |lvar_name|
+      context 'as lvars' do
+        it "appends '$'" do
+          expect_rewritten(
+            s(:lvar, lvar_name)
+          ).to eq(
+            s(:lvar, :"#{lvar_name}$")
+          )
+
+          expect_rewritten(
+            s(:lvasgn, lvar_name, s(:int, 1))
+          ).to eq(
+            s(:lvasgn, :"#{lvar_name}$", s(:int, 1))
+          )
+        end
+      end
+
+      context 'as arguments' do
+        it "appends '$'" do
+          [:arg, :restarg, :blockarg, :shadowarg, :kwrestarg, :kwarg].each do |type|
+            rewritten = rewrite(s(type, lvar_name))
+            expect(rewritten).to eq(s(type, :"#{lvar_name}$"))
+            expect(rewritten.meta[:arg_name]).to eq(lvar_name)
+          end
+
+          [:optarg, :kwoptarg].each do |type|
+            rewritten = rewrite(s(type, lvar_name, s(:nil)))
+            expect(rewritten).to eq(s(type, :"#{lvar_name}$", s(:nil)))
+            expect(rewritten.meta[:arg_name]).to eq(lvar_name)
+          end
+        end
+      end
+    end
+  end
+
+  context 'reserved ivars' do
+    reserved_ivars.each do |ivar_name|
+      it "appends '$' to :ivar #{ivar_name}" do
+        expect_rewritten(
+          s(:ivar, ivar_name)
+        ).to eq(
+          s(:ivar, :"#{ivar_name}$")
+        )
+      end
+
+      it "appends '$' to :ivasgn #{ivar_name}" do
+        expect_rewritten(
+          s(:ivasgn, ivar_name, s(:nil))
+        ).to eq(
+          s(:ivasgn, :"#{ivar_name}$", s(:nil))
+        )
+      end
+    end
+  end
+
+  context 'normal lvar name' do
+    it 'does not modify AST' do
+      expect_no_rewriting_for(s(:lvar, :a))
+      expect_no_rewriting_for(s(:lvasgn, :a))
+    end
+  end
+
+  context 'normal ivar name' do
+    it 'does not modify AST' do
+      [:arg, :restarg, :blockarg, :shadowarg, :kwarg, :kwrestarg].each do |type|
+        rewritten = rewrite(s(type, :a))
+        expect(rewritten).to eq(s(type, :a))
+        expect(rewritten.meta[:arg_name]).to eq(:a)
+      end
+
+      [:optarg, :kwoptarg].each do |type|
+        rewritten = rewrite(s(type, :a, s(:nil)))
+        expect(rewritten).to eq(s(type, :a, s(:nil)))
+        expect(rewritten.meta[:arg_name]).to eq(:a)
+      end
+    end
+  end
+end
diff --git a/spec/lib/rewriters/logical_operator_assignment_spec.rb b/spec/lib/rewriters/logical_operator_assignment_spec.rb
new file mode 100644
index 00000000..0f219d4c
--- /dev/null
+++ b/spec/lib/rewriters/logical_operator_assignment_spec.rb
@@ -0,0 +1,177 @@
+require 'lib/spec_helper'
+require 'support/rewriters_helper'
+
+RSpec.describe Opal::Rewriters::LogicalOperatorAssignment do
+  include RewritersHelper
+
+  use_only_described_rewriter!
+
+  before(:each) { Opal::Rewriters::LogicalOperatorAssignment.reset_tmp_counter! }
+  let(:cache_tmp_name) { :$logical_op_recvr_tmp_1 }
+  let(:cached) { s(:js_tmp, cache_tmp_name) }
+
+  context 'rewriting or_asgn and and_asgn nodes' do
+    context 'local variable' do
+      include_examples 'it rewrites source-to-source', 'a = local; a ||= 1', 'a = local; a = a || 1'
+      include_examples 'it rewrites source-to-source', 'a = local; a &&= 1', 'a = local; a = a && 1'
+    end
+
+    context 'instance variable' do
+      include_examples 'it rewrites source-to-source', '@a ||= 1', '@a = @a || 1'
+      include_examples 'it rewrites source-to-source', '@a &&= 1', '@a = @a && 1'
+    end
+
+    context 'constant' do
+      include_examples 'it rewrites source-to-source', 'CONST ||= 1', 'CONST = defined?(CONST) ? (CONST || 1) : 1'
+      include_examples 'it rewrites source-to-source', 'CONST &&= 1', 'CONST = CONST && 1'
+    end
+
+    context 'global variable' do
+      include_examples 'it rewrites source-to-source', '$g ||= 1', '$g = $g || 1'
+      include_examples 'it rewrites source-to-source', '$g &&= 1', '$g = $g && 1'
+    end
+
+    context 'class variable' do
+      include_examples 'it rewrites source-to-source', '@@a ||= 1', '@@a = defined?(@@a) ? (@@a || 1) : 1'
+      include_examples 'it rewrites source-to-source', '@@a &&= 1', '@@a = @@a && 1'
+    end
+
+    context 'simple method call' do
+      include_examples 'it rewrites source-to-source', 'recvr = 1; recvr.meth ||= rhs', 'recvr = 1; recvr.meth || recvr.meth = rhs'
+      include_examples 'it rewrites source-to-source', 'recvr = 1; recvr.meth &&= rhs', 'recvr = 1; recvr.meth && recvr.meth = rhs'
+    end
+
+    context '[] / []= method call' do
+      include_examples 'it rewrites source-to-source', 'recvr = 1; recvr[idx] ||= rhs', 'recvr = 1; recvr[idx] || recvr[idx] = rhs'
+      include_examples 'it rewrites source-to-source', 'recvr = 1; recvr[idx] &&= rhs', 'recvr = 1; recvr[idx] && recvr[idx] = rhs'
+    end
+
+    context '[] / []= method call with multiple arguments' do
+      include_examples 'it rewrites source-to-source',
+        'recvr = 1; recvr[idx1, idx2] ||= rhs',
+          'recvr = 1; recvr[idx1, idx2] || recvr[idx1, idx2] = rhs'
+
+      include_examples 'it rewrites source-to-source',
+        'recvr = 1; recvr[idx1, idx2] &&= rhs',
+          'recvr = 1; recvr[idx1, idx2] && recvr[idx1, idx2] = rhs'
+    end
+
+    context 'chain of method calls' do
+      it 'rewrites ||= by caching receiver to a temporary local variable' do
+        input = parse('recvr.a.b ||= rhs')
+        rewritten = rewrite(input).children.first
+
+        expected = s(:begin,
+          s(:lvasgn, cache_tmp_name, ast_of('recvr.a')), # cached = recvr.a
+          s(:or,
+            s(:send, cached, :b),                        # cached.b ||
+            s(:send, cached, :b=, ast_of('rhs'))))       # cached.b = rhs
+
+        expect(rewritten).to eq(expected)
+      end
+
+      it 'rewrites &&= by caching receiver to a temporary local variable' do
+        input = parse('recvr.a.b &&= rhs')
+        rewritten = rewrite(input).children.first
+
+        expected = s(:begin,
+          s(:lvasgn, cache_tmp_name, ast_of('recvr.a')), # cached = recvr.a
+          s(:and,
+            s(:send, cached, :b),                        # cached.b ||
+            s(:send, cached, :b=, ast_of('rhs'))))       # cached.b = rhs
+
+        expect(rewritten).to eq(expected)
+      end
+    end
+
+    context 'method call using safe nafigator' do
+      it 'rewrites ||= by caching receiver and rewriting it to if and or_asgn' do
+        input = parse('recvr&.meth ||= rhs')
+        rewritten = rewrite(input).children.first
+
+        expected = s(:begin,
+          s(:lvasgn, cache_tmp_name, ast_of('recvr')), # cached = recvr
+          s(:if, s(:send, cached, :nil?),              # if cached.nil?
+            s(:nil),                                   #   nil
+                                                       # else
+            s(:or,
+              s(:send, cached, :meth),                 #   cached.meth ||
+              s(:send, cached, :meth=, ast_of('rhs'))) #     cached.meth = rhs
+            )                                          # end
+          )
+
+        expect(rewritten).to eq(expected)
+      end
+
+      it 'rewrites &&= by caching receiver and rewriting it to if and or_asgn' do
+        input = parse('recvr&.meth &&= rhs')
+        rewritten = rewrite(input).children.first
+
+        expected = s(:begin,
+          s(:lvasgn, cache_tmp_name, ast_of('recvr')), # cached = recvr
+          s(:if, s(:send, cached, :nil?),              # if cached.nil?
+            s(:nil),                                   #   nil
+                                                       # else
+            s(:and,
+              s(:send, cached, :meth),                 #   cached.meth &&
+              s(:send, cached, :meth=, ast_of('rhs'))) #     cached.meth = rhs
+            )                                          # end
+          )
+
+        expect(rewritten).to eq(expected)
+      end
+    end
+  end
+
+  context 'rewriting defined?(or_asgn) and defined?(and_asgn)' do
+    context 'local variable' do
+      include_examples 'it rewrites source-to-source', 'a = nil; defined?(a ||= 1)', 'a = nil; "assignment"'
+      include_examples 'it rewrites source-to-source', 'a = nil; defined?(a &&= 1)', 'a = nil; "assignment"'
+    end
+
+    context 'instance variable' do
+      include_examples 'it rewrites source-to-source', 'defined?(@a ||= 1)', %q("assignment")
+      include_examples 'it rewrites source-to-source', 'defined?(@a &&= 1)', %q("assignment")
+    end
+
+    context 'constant' do
+      include_examples 'it rewrites source-to-source', 'defined?(CONST ||= 1)', %q("assignment")
+      include_examples 'it rewrites source-to-source', 'defined?(CONST &&= 1)', %q("assignment")
+    end
+
+    context 'global variable' do
+      include_examples 'it rewrites source-to-source', 'defined?($g ||= 1)', %q("assignment")
+      include_examples 'it rewrites source-to-source', 'defined?($g &&= 1)', %q("assignment")
+    end
+
+    context 'class variable' do
+      include_examples 'it rewrites source-to-source', 'defined?(@@a ||= 1)', %q("assignment")
+      include_examples 'it rewrites source-to-source', 'defined?(@@a &&= 1)', %q("assignment")
+    end
+
+    context 'simple method call' do
+      include_examples 'it rewrites source-to-source', 'defined?(recvr.meth ||= rhs)', %q("assignment")
+      include_examples 'it rewrites source-to-source', 'defined?(recvr.meth &&= rhs)', %q("assignment")
+    end
+
+    context '[] / []= method call' do
+      include_examples 'it rewrites source-to-source', 'defined?(recvr[idx] ||= rhs)', %q("assignment")
+      include_examples 'it rewrites source-to-source', 'defined?(recvr[idx] &&= rhs)', %q("assignment")
+    end
+
+    context '[] / []= method call with multiple arguments' do
+      include_examples 'it rewrites source-to-source', 'defined?(recvr[idx1, idx2] ||= rhs)', %q("assignment")
+      include_examples 'it rewrites source-to-source', 'defined?(recvr[idx1, idx2] &&= rhs)', %q("assignment")
+    end
+
+    context 'chain of method calls' do
+      include_examples 'it rewrites source-to-source', 'defined?(recvr.a.b.c ||= rhs)', %q("assignment")
+      include_examples 'it rewrites source-to-source', 'defined?(recvr.a.b.c &&= rhs)', %q("assignment")
+    end
+
+    context 'method call using safe nafigator' do
+      include_examples 'it rewrites source-to-source', 'defined?(recvr&.meth ||= rhs)', %q("assignment")
+      include_examples 'it rewrites source-to-source', 'defined?(recvr&.meth &&= rhs)', %q("assignment")
+    end
+  end
+end
diff --git a/spec/lib/rewriters/numblocks_spec.rb b/spec/lib/rewriters/numblocks_spec.rb
new file mode 100644
index 00000000..86aafd71
--- /dev/null
+++ b/spec/lib/rewriters/numblocks_spec.rb
@@ -0,0 +1,42 @@
+require 'lib/spec_helper'
+require 'support/rewriters_helper'
+require 'opal/rewriters/numblocks'
+
+RSpec.describe Opal::Rewriters::Numblocks do
+  include RewritersHelper
+  extend RewritersHelper # s() in example scope
+
+  correct_names = proc do |ast|
+    case ast
+    when Opal::AST::Node
+      ast.children.map do |i|
+        correct_names.(i)
+      end.yield_self { |children| s(ast.type, *children) }
+    when :arg1 then :_1
+    when :arg2 then :_2
+    when :arg3 then :_3
+    else
+      ast
+    end
+  end
+
+  include_examples 'it rewrites source-to-AST', <<~ENDSOURCE, correct_names.(ast_of(<<~ENDDEST))
+    proc do
+      _1
+    end
+  ENDSOURCE
+    proc do |arg1|
+      arg1
+    end
+  ENDDEST
+
+  include_examples 'it rewrites source-to-AST', <<~ENDSOURCE, correct_names.(ast_of(<<~ENDDEST))
+    proc do
+      _3
+    end
+  ENDSOURCE
+    proc do |arg1, arg2, arg3|
+      arg3
+    end
+  ENDDEST
+end
diff --git a/spec/lib/rewriters/opal_engine_check_spec.rb b/spec/lib/rewriters/opal_engine_check_spec.rb
new file mode 100644
index 00000000..ccc7593a
--- /dev/null
+++ b/spec/lib/rewriters/opal_engine_check_spec.rb
@@ -0,0 +1,117 @@
+require 'lib/spec_helper'
+require 'support/rewriters_helper'
+
+RSpec.describe Opal::Rewriters::OpalEngineCheck do
+  include RewritersHelper
+
+  let(:opal_str_sexp) { s(:str, 'opal') }
+  let(:true_branch) { s(:int, 1) }
+  let(:false_branch) { s(:int, 2) }
+
+  [:RUBY_ENGINE, :RUBY_PLATFORM].each do |const_name|
+    context "for #{const_name} constant" do
+      let(:ruby_const_sexp) { s(:const, nil, const_name) }
+
+      context "#{const_name} == rhs" do
+        context "when rhs == 'opal'" do
+          let(:check) do
+            s(:send, ruby_const_sexp, :==, opal_str_sexp)
+          end
+
+          it 'replaces the expression with the true branch' do
+            expect_rewritten(
+              s(:if, check, true_branch, false_branch)
+            ).to eq(
+              true_branch
+            )
+          end
+        end
+
+        context "when rhs != 'opal'" do
+          let(:check) do
+            s(:send, ruby_const_sexp, :==, s(:nil))
+          end
+
+          it 'does not modify sexp' do
+            expect_no_rewriting_for(
+              s(:if, check, true_branch, false_branch)
+            )
+          end
+        end
+      end
+
+      context "#{const_name} != rhs" do
+        context "when rhs == 'opal'" do
+          let(:check) do
+            s(:send, ruby_const_sexp, :!=, opal_str_sexp)
+          end
+
+          it 'replaces the expression with the false branch' do
+            expect_rewritten(
+              s(:if, check, true_branch, false_branch)
+            ).to eq(
+              false_branch
+            )
+          end
+        end
+
+        context "when rhs != 'opal'" do
+          let(:check) do
+            s(:send, ruby_const_sexp, :!=, s(:nil))
+          end
+
+          it 'does not modify sexp' do
+            expect_no_rewriting_for(
+              s(:if, check, true_branch, false_branch)
+            )
+          end
+        end
+      end
+
+      it 'supports nested blocks' do
+        expect_rewritten(
+          # if true
+          #   if RUBY_ENGINE == 'opal'
+          #     if RUBY_ENGINE == 'opal'
+          #       :a
+          #     end
+          #     if RUBY_ENGINE != 'opal'
+          #       :b
+          #     end
+          #   end
+          # end
+
+          s(:if,
+            s(:true),
+            s(:if,
+              s(:send, ruby_const_sexp, :==, opal_str_sexp),
+              s(:begin,
+                s(:if,
+                  s(:send, ruby_const_sexp, :==, opal_str_sexp),
+                  s(:sym, :a)
+                ),
+                s(:if,
+                  s(:send, ruby_const_sexp, :!=, opal_str_sexp),
+                  s(:sym, :b)
+                )
+              )
+            )
+          )
+        ).to eq(
+          # if true
+          #   :a
+          #   nil
+          # end
+
+          s(:if,
+            s(:true),
+            s(:begin,
+              s(:sym, :a),
+              s(:nil)
+            )
+          )
+        )
+      end
+    end
+  end
+end
diff --git a/spec/lib/rewriters/returnable_logic_spec.rb b/spec/lib/rewriters/returnable_logic_spec.rb
new file mode 100644
index 00000000..a318cca8
--- /dev/null
+++ b/spec/lib/rewriters/returnable_logic_spec.rb
@@ -0,0 +1,52 @@
+require 'lib/spec_helper'
+require 'support/rewriters_helper'
+require 'opal/rewriters/for_rewriter'
+
+RSpec.describe Opal::Rewriters::ReturnableLogic do
+  include RewritersHelper
+  extend  RewritersHelper
+
+  include_examples 'it rewrites source-to-AST', 'true or false', s(:if,
+    s(:lvasgn, "$ret_or_1", s(:true)),
+    s(:js_tmp, "$ret_or_1"),
+    s(:false)
+  )
+
+  include_examples 'it rewrites source-to-AST', 'true and false', s(:if,
+    s(:lvasgn, "$ret_or_1", s(:true)),
+    s(:false),
+    s(:js_tmp, "$ret_or_1")
+  )
+
+  include_examples 'it rewrites source-to-AST', 'true or next', s(:if,
+    s(:lvasgn, "$ret_or_1", s(:true)),
+    s(:js_tmp, "$ret_or_1"),
+    s(:next)
+  )
+
+  include_examples 'it rewrites source-to-AST', 'true and next', s(:if,
+    s(:lvasgn, "$ret_or_1", s(:true)),
+    s(:next),
+    s(:js_tmp, "$ret_or_1")
+  )
+
+  include_examples 'it rewrites source-to-AST', 'true or false or maybe', s(:if,
+    s(:lvasgn, "$ret_or_1", s(:if,
+      s(:lvasgn, "$ret_or_2", s(:true)),
+      s(:js_tmp, "$ret_or_2"),
+      s(:false)
+    )),
+    s(:js_tmp, "$ret_or_1"),
+    s(:send, nil, :maybe)
+  )
+
+  include_examples 'it rewrites source-to-AST', 'true and false and surely', s(:if,
+    s(:lvasgn, "$ret_or_1", s(:if,
+      s(:lvasgn, "$ret_or_2", s(:true)),
+      s(:false),
+      s(:js_tmp, "$ret_or_2")
+    )),
+    s(:send, nil, :surely),
+    s(:js_tmp, "$ret_or_1")
+  )
+end
diff --git a/spec/lib/rewriters/rubyspec/filters_rewriter_spec.rb b/spec/lib/rewriters/rubyspec/filters_rewriter_spec.rb
new file mode 100644
index 00000000..f2b4be05
--- /dev/null
+++ b/spec/lib/rewriters/rubyspec/filters_rewriter_spec.rb
@@ -0,0 +1,67 @@
+require 'lib/spec_helper'
+require 'opal/rewriters/rubyspec/filters_rewriter'
+require 'support/rewriters_helper'
+
+RSpec.describe Opal::Rubyspec::FiltersRewriter do
+  include RewritersHelper
+
+  let(:source) do
+    <<-SOURCE
+      describe 'User#email' do
+        context 'when this' do
+          it 'does that'
+
+          it 'and does that' do
+            42
+          end
+        end
+
+        it 'also does something else'
+      end
+    SOURCE
+  end
+
+  let(:ast) { parse(source) }
+
+  context 'when spec is filtered' do
+    around(:each) do |e|
+      Opal::Rubyspec::FiltersRewriter.filter 'User#email when this does that'
+      Opal::Rubyspec::FiltersRewriter.filter 'User#email when this and does that'
+      e.run
+      Opal::Rubyspec::FiltersRewriter.clear_filters!
+    end
+
+    let(:rewritten_source) do
+      <<-SOURCE
+        describe 'User#email' do
+          context 'when this' do
+            nil # <- right here
+            nil # <- and here
+          end
+
+          it 'also does something else'
+        end
+      SOURCE
+    end
+
+    let(:expected_ast) { parse(rewritten_source) }
+
+    it 'replaces it with nil' do
+      expect_rewritten(ast).to eq(expected_ast)
+    end
+
+    it 'disables cache' do
+      expect(rewritten(ast).meta[:dynamic_cache_result]).to be_truthy
+    end
+  end
+
+  context 'when spec is not filtered' do
+    it 'does not rewrite it' do
+      expect_no_rewriting_for(ast)
+    end
+
+    it 'disables cache' do
+      expect(rewritten(ast).meta[:dynamic_cache_result]).to be_truthy
+    end
+  end
+end
diff --git a/spec/lib/simple_server_spec.rb b/spec/lib/simple_server_spec.rb
new file mode 100644
index 00000000..9e326ade
--- /dev/null
+++ b/spec/lib/simple_server_spec.rb
@@ -0,0 +1,56 @@
+require 'lib/spec_helper'
+require 'rack/test'
+
+RSpec.describe Opal::SimpleServer do
+  include Rack::Test::Methods
+
+  attr_accessor :app
+
+  before do
+    Opal.append_path "#{__dir__}/fixtures"
+    self.app = described_class.new(main: 'console')
+  end
+
+  it 'serves opal assets' do
+    response = get '/assets/console.js'
+    expect(response.body).to start_with(Opal::Builder.build('console').to_s)
+  end
+
+  it 'serves index for all non opal paths' do
+    %w[/ /foo /foo/bar/baz].each do |path|
+      response = get path
+      expect(response.body).to include('<html>')
+      expect(response.body).to include('<script')
+      expect(response.body).to include('src="/assets/console.js')
+      expect(response.headers['Content-type']).to eq('text/html')
+    end
+  end
+
+  it 'serves the source map as data uri' do
+    response = get '/assets/console.js'
+    expect(response.body).to include("\n//# sourceMappingURL=data:application/json;base64,")
+    base64_map = response.body.split("\n//# sourceMappingURL=data:application/json;base64,").last
+    expect(Base64.decode64(base64_map)).to eq(Opal::Builder.build('console').source_map.to_json)
+  end
+
+  it 'takes a :prefix option to set the assets prefix' do
+    self.app = described_class.new(main: 'opal', prefix: 'foo')
+    expect(get('/foo/console.js').body).to start_with(Opal::Builder.build('console').to_s)
+    self.app = described_class.new(main: 'opal', prefix: '/foo')
+    expect(get('/foo/console.js').body).to start_with(Opal::Builder.build('console').to_s)
+  end
+
+  it 'takes a :main option to set the main asset' do
+    self.app = described_class.new(main: 'foo')
+    expect(get('/').body).to include('src="/assets/foo.js')
+  end
+
+  it 'respects config set in Opal::Config' do
+    Opal::Config.arity_check_enabled = false
+    expect(get('/assets/console.js').body).not_to include('$$parameters: []')
+
+    Opal::Config.arity_check_enabled = true
+    self.app = described_class.new(main: 'console')
+    expect(get('/assets/console.js').body).to include('$$parameters: []')
+  end
+end
diff --git a/spec/lib/source_map/file_spec.rb b/spec/lib/source_map/file_spec.rb
new file mode 100644
index 00000000..d7e651eb
--- /dev/null
+++ b/spec/lib/source_map/file_spec.rb
@@ -0,0 +1,67 @@
+require 'support/source_map_helper'
+
+RSpec.describe Opal::SourceMap::File do
+  include SourceMapHelper
+
+  specify '#as_json' do
+    map = described_class.new([fragment(code: "foo")], 'foo.rb', "foo")
+    expect(map.as_json).to be_a(Hash)
+    expect(map.as_json(ignored: :options)).to be_a(Hash)
+  end
+
+  it 'correctly map generated code to original positions' do
+    fragments = [
+      # It doesn't matter too much to keep these fragments updated in terms of generated code,
+      # as long as it works as real-world usage.
+      fragment(line: nil, column: nil, source_map_name: nil, code: "/* Generated by Opal 0.11.1.dev */", sexp_type: :top),
+      fragment(line: nil, column: nil, source_map_name: nil, code: "\n", sexp_type: :top),
+      fragment(line: nil, column: nil, source_map_name: nil, code: "(function(Opal) {", sexp_type: :top),
+      fragment(line: nil, column: nil, source_map_name: nil, code: "\n  ", sexp_type: :top),
+      fragment(line: nil, column: nil, source_map_name: nil, code: "var self = Opal.top, $nesting = [], nil = Opal.nil, $$$ = Opal.$$$, $$ = Opal.$$, $breaker = Opal.breaker, $slice = Opal.slice;\n", sexp_type: :top),
+      fragment(line: nil, column: nil, source_map_name: nil, code: "\n  ", sexp_type: :top),
+      fragment(line: nil, column: nil, source_map_name: nil, code: "Opal.add_stubs('puts');", sexp_type: :top),
+      fragment(line: nil, column: nil, source_map_name: nil, code: "\n  ", sexp_type: :top),
+      fragment(line: 1, column: 0, source_map_name: nil, code: "\n  ", sexp_type: :begin),
+      fragment(line: nil, column: nil, source_map_name: "self", code: "self", sexp_type: :self),
+      fragment(line: 1, column: 0, source_map_name: :puts, code: ".$puts", sexp_type: :send),
+      fragment(line: 1, column: 0, source_map_name: :puts, code: "(", sexp_type: :send),
+      fragment(line: 1, column: 5, source_map_name: "5", code: "5", sexp_type: :int),
+      fragment(line: 1, column: 0, source_map_name: :puts, code: ")", sexp_type: :send),
+      fragment(line: 1, column: 0, source_map_name: nil, code: ";", sexp_type: :begin),
+      fragment(line: 1, column: 0, source_map_name: nil, code: "\n  ", sexp_type: :begin),
+      fragment(line: 3, column: 0, source_map_name: nil, code: "return ", sexp_type: :js_return),
+      fragment(line: nil, column: nil, source_map_name: "self", code: "self", sexp_type: :self),
+      fragment(line: 3, column: 0, source_map_name: :puts, code: ".$puts", sexp_type: :send),
+      fragment(line: 3, column: 0, source_map_name: :puts, code: "(", sexp_type: :send),
+      fragment(line: 3, column: 5, source_map_name: "6", code: "6", sexp_type: :int),
+      fragment(line: 3, column: 0, source_map_name: :puts, code: ")", sexp_type: :send),
+      fragment(line: 1, column: 0, source_map_name: nil, code: ";", sexp_type: :begin),
+      fragment(line: nil, column: nil, source_map_name: nil, code: "\n", sexp_type: :top),
+      fragment(line: nil, column: nil, source_map_name: nil, code: "})(Opal);\n", sexp_type: :top),
+      fragment(line: nil, column: nil, source_map_name: nil, code: "\n", sexp_type: :newline),
+    ]
+
+    subject = described_class.new(fragments, 'foo.rb', "puts 5\n\nputs 6")
+    generated_code = subject.generated_code
+
+    expect(subject.map.merge(mappings: nil)).to eq(
+      version: 3,
+      sourceRoot: '',
+      sources: ['foo.rb'],
+      sourcesContent: ["puts 5\n\nputs 6"],
+      names: ['self', 'puts', '5', '6'],
+      mappings: nil,
+    )
+
+    expect('$puts(5)').to be_at_line_and_column(6, 7, source: generated_code)
+    expect('$puts(5)').to be_at_line_and_column(6, 7, source: generated_code)
+    expect('5'       ).to be_at_line_and_column(6, 13, source: generated_code)
+    expect('$puts(6)').to be_at_line_and_column(7, 14, source: generated_code)
+    expect('6'       ).to be_at_line_and_column(7, 20, source: generated_code)
+
+    expect('puts(5)').to be_mapped_to_line_and_column(0, 0, map: subject, source: generated_code, file: 'foo.rb')
+    expect('5);'    ).to be_mapped_to_line_and_column(0, 5, map: subject, source: generated_code, file: 'foo.rb')
+    expect('puts(6)').to be_mapped_to_line_and_column(2, 0, map: subject, source: generated_code, file: 'foo.rb')
+    expect('6);'    ).to be_mapped_to_line_and_column(2, 5, map: subject, source: generated_code, file: 'foo.rb')
+  end
+end
diff --git a/spec/lib/source_map/index_spec.rb b/spec/lib/source_map/index_spec.rb
new file mode 100644
index 00000000..99a7f2eb
--- /dev/null
+++ b/spec/lib/source_map/index_spec.rb
@@ -0,0 +1,80 @@
+require 'support/source_map_helper'
+
+RSpec.describe Opal::SourceMap::Index do
+  include SourceMapHelper
+
+  specify '#as_json' do
+    builder = Opal::Builder.new
+    builder.build_str('foo', 'bar.rb')
+    map = builder.source_map
+    expect(map.as_json).to be_a(Hash)
+    expect(map.as_json(ignored: :options)).to be_a(Hash)
+  end
+
+  let(:builder) do
+    builder = Opal::Builder.new
+    builder.build_str(
+      "    jsline1();\n"+
+      "    jsline2();\n"+
+      "    jsline3();",
+      'js_file.js'
+    )
+    builder.build_str(
+      "  rbline1\n"+
+      "  rbline2\n"+
+      "  rbline3",
+      'rb_file.rb'
+    )
+    builder.build_str(
+      "\n"+
+      "\n"+
+      "\n"+
+      "    jsline4();\n"+
+      "    jsline5();\n"+
+      "    jsline6();",
+      'js2_file.js'
+    )
+    builder.build_str(
+      "\n"+
+      "\n"+
+      "\n"+
+      "  rbline4\n"+
+      "  rbline5\n"+
+      "  rbline6",
+      'rb2_file.rb'
+    )
+    builder
+  end
+
+  let(:compiled) { builder.to_s }
+  let(:source_map) { builder.source_map }
+  let(:mappings) { source_map.send(:mappings) }
+
+  it 'points to the correct source line' do
+    # To debug this stuff can be useful to print out all
+    # the sources with #inspect_source:
+    #
+    #   p :compiled
+    #   inspect_source compiled
+    #
+    #   p :generated_code
+    #   source_map.source_maps.each do |sub_source_map|
+    #     p generated_code: sub_source_map.file
+    #     inspect_source sub_source_map.generated_code
+    #   end
+    #
+
+    expect('jsline1(').to be_mapped_to_line_and_column(0, 4, file: 'js_file.js', map: source_map, source: compiled)
+    expect('jsline2(').to be_mapped_to_line_and_column(1, 4, file: 'js_file.js', map: source_map, source: compiled)
+    expect('jsline3(').to be_mapped_to_line_and_column(2, 4, file: 'js_file.js', map: source_map, source: compiled)
+    expect('$rbline1(').to be_mapped_to_line_and_column(0, 2, file: 'rb_file.rb', map: source_map, source: compiled)
+    expect('$rbline2(').to be_mapped_to_line_and_column(1, 2, file: 'rb_file.rb', map: source_map, source: compiled)
+    expect('$rbline3(').to be_mapped_to_line_and_column(2, 2, file: 'rb_file.rb', map: source_map, source: compiled)
+    expect('jsline4(').to be_mapped_to_line_and_column(3, 4, file: 'js2_file.js', map: source_map, source: compiled)
+    expect('jsline5(').to be_mapped_to_line_and_column(4, 4, file: 'js2_file.js', map: source_map, source: compiled)
+    expect('jsline6(').to be_mapped_to_line_and_column(5, 4, file: 'js2_file.js', map: source_map, source: compiled)
+    expect('$rbline4(').to be_mapped_to_line_and_column(3, 2, file: 'rb2_file.rb', map: source_map, source: compiled)
+    expect('$rbline5(').to be_mapped_to_line_and_column(4, 2, file: 'rb2_file.rb', map: source_map, source: compiled)
+    expect('$rbline6(').to be_mapped_to_line_and_column(5, 2, file: 'rb2_file.rb', map: source_map, source: compiled)
+  end
+end
diff --git a/spec/lib/spec_helper.rb b/spec/lib/spec_helper.rb
new file mode 100644
index 00000000..d41b588f
--- /dev/null
+++ b/spec/lib/spec_helper.rb
@@ -0,0 +1,105 @@
+$VERBOSE = true
+
+if ENV['CHECK_COVERAGE']
+  require 'coveralls'
+  Coveralls.wear!
+end
+
+require 'opal'
+
+# See http://rubydoc.info/gems/rspec-core/RSpec/Core/Configuration
+RSpec.configure do |config|
+  config.before { Opal.reset_paths! unless RUBY_PLATFORM == 'opal' }
+  config.before { Opal::Config.reset! if defined? Opal::Config }
+  config.before { Opal::Processor.reset_cache_key! if defined? Opal::Processor }
+
+  # rspec-expectations config goes here. You can use an alternate
+  # assertion/expectation library such as wrong or the stdlib/minitest
+  # assertions if you prefer.
+  config.expect_with :rspec do |expectations|
+    # This option will default to `true` in RSpec 4. It makes the `description`
+    # and `failure_message` of custom matchers include text for helper methods
+    # defined using `chain`, e.g.:
+    #     be_bigger_than(2).and_smaller_than(4).description
+    #     # => "be bigger than 2 and smaller than 4"
+    # ...rather than:
+    #     # => "be bigger than 2"
+    expectations.include_chain_clauses_in_custom_matcher_descriptions = true
+
+    expectations.syntax = [:expect, :should]
+  end
+
+  # rspec-mocks config goes here. You can use an alternate test double
+  # library (such as bogus or mocha) by changing the `mock_with` option here.
+  config.mock_with :rspec do |mocks|
+    # Prevents you from mocking or stubbing a method that does not exist on
+    # a real object. This is generally recommended, and will default to
+    # `true` in RSpec 4.
+    mocks.verify_partial_doubles = true
+
+    mocks.syntax = [:expect, :should]
+  end
+
+  # This option will default to `:apply_to_host_groups` in RSpec 4 (and will
+  # have no way to turn it off -- the option exists only for backwards
+  # compatibility in RSpec 3). It causes shared context metadata to be
+  # inherited by the metadata hash of host groups and examples, rather than
+  # triggering implicit auto-inclusion in groups with matching metadata.
+  config.shared_context_metadata_behavior = :apply_to_host_groups if config.respond_to? :shared_context_metadata_behavior
+
+  # This allows you to limit a spec run to individual examples or groups
+  # you care about by tagging them with `:focus` metadata. When nothing
+  # is tagged with `:focus`, all examples get run. RSpec also provides
+  # aliases for `it`, `||\describe`, and `context` that include `:focus`
+  # metadata: `fit`, `fdescribe` and `fcontext`, respectively.
+  config.filter_run_when_matching :focus if config.respond_to? :filter_run_when_matching
+
+  # Allows RSpec to persist some state between runs in order to support
+  # the `--only-failures` and `--next-failure` CLI options. We recommend
+  # you configure your source control system to ignore this file.
+  config.example_status_persistence_file_path = "tmp/examples.txt" if config.respond_to? :example_status_persistence_file_path
+
+  # Limits the available syntax to the non-monkey patched syntax that is
+  # recommended. For more details, see:
+  #   - http://rspec.info/blog/2012/06/rspecs-new-expectation-syntax/
+  #   - http://www.teaisaweso.me/blog/2013/05/27/rspecs-new-message-expectation-syntax/
+  #   - http://rspec.info/blog/2014/05/notable-changes-in-rspec-3/#zero-monkey-patching-mode
+  # config.disable_monkey_patching!
+
+  # This setting enables warnings. It's recommended, but in some cases may
+  # be too noisy due to issues in dependencies.
+  # config.warnings = true
+
+  # Many RSpec users commonly either run the entire suite or an individual
+  # file, and it's useful to allow more verbose output when running an
+  # individual spec file.
+  if config.files_to_run.one?
+    # Use the documentation formatter for detailed output,
+    # unless a formatter has already been configured
+    # (e.g. via a command-line flag).
+    config.default_formatter = 'doc'
+
+    # Show full backtrace
+    config.backtrace_exclusion_patterns = []
+  else
+    # The RSpec specs are stored in spec/lib.
+    config.pattern = 'spec/lib/**/*_spec.rb'
+  end
+
+  # Print the 10 slowest examples and example groups at the
+  # end of the spec run, to help surface which specs are running
+  # particularly slow.
+  config.profile_examples = 10
+
+  # Run specs in random order to surface order dependencies. If you find an
+  # order dependency and want to debug it, you can fix the order by providing
+  # the seed, which is printed after each run.
+  #     --seed 1234
+  config.order = :random
+
+  # Seed global randomization in this process using the `--seed` CLI option.
+  # Setting this allows you to use `--seed` to deterministically reproduce
+  # test failures related to randomization by passing the same `--seed` value
+  # as the one that triggered the failure.
+  Kernel.srand config.seed
+end
diff --git a/spec/mspec-opal/formatters.rb b/spec/mspec-opal/formatters.rb
new file mode 100644
index 00000000..b656147b
--- /dev/null
+++ b/spec/mspec-opal/formatters.rb
@@ -0,0 +1,211 @@
+class BaseOpalFormatter
+  def initialize(out=nil)
+    @exception = @failure = false
+    @exceptions = []
+    @count = 0
+    @examples = 0
+
+    @current_state = nil
+  end
+
+  def register
+    MSpec.register :exception, self
+    MSpec.register :before,    self
+    MSpec.register :after,     self
+    MSpec.register :start,     self
+    MSpec.register :finish,    self
+    MSpec.register :abort,     self
+    MSpec.register :enter,     self
+  end
+
+  def red(str)
+    `console.error(str)`
+  end
+
+  def green(str)
+    `console.info(str)`
+  end
+
+  def cyan(str)
+    `console.info(str)`
+  end
+
+  def log(str)
+    `console.log(str)`
+  end
+
+  def exception?
+    @exception
+  end
+
+  def failure?
+    @failure
+  end
+
+  def enter(describe); end
+
+  def before(state=nil)
+    @current_state = nil
+    @failure = @exception = false
+  end
+
+  def exception(exception)
+    @count += 1
+    @failure = @exception ? @failure && exception.failure? : exception.failure?
+    @exception = true
+    @exceptions << exception
+  end
+
+  def after(state = nil)
+    @current_state = state
+    @examples += 1
+  end
+
+  def start
+    @start_time = Time.now.to_f
+  end
+
+  def finish
+    time = Time.now.to_f - @start_time
+
+    if @exceptions.empty?
+      log "\nFinished"
+      green "#{@examples} examples, #{@count} failures (time taken: #{time})\n"
+
+      finish_with_code 0
+    else
+      log "\nFailures:"
+
+      @exceptions.each_with_index do |exception, idx|
+        log "\n  #{idx + 1}. #{exception.description}"
+        red "\n    #{exception.message}"
+        log "\n    #{`#{exception.exception}.stack`}\n"
+      end
+
+      log "\nFinished"
+      red "#{@examples} examples, #{@count} failures (time taken: #{time})"
+
+      log "\n\nFilters for failed examples:\n\n"
+      @exceptions.map do |exception|
+        ["#{exception.describe} #{exception.it}", exception.message.tr("\n", " ")]
+      end.sort.each do |(description, message)|
+        red "fails #{description.inspect}"
+        cyan " # #{message}\n"
+      end
+      log "\n"
+
+      finish_with_code(1)
+    end
+  end
+
+  def finish_with_code(code)
+    exit(code)
+  end
+end
+
+class BrowserFormatter < BaseOpalFormatter
+  def initialize(*args, &block)
+    $passed = 0
+    $failed = 0
+    $errored = 0
+    super
+  end
+
+  def print_example(state)
+    unless exception?
+      $passed += 1
+    else
+      if failure?
+        $failed += 1
+      else
+        $errored += 1
+      end
+    end
+  end
+end
+
+class ColoredDottedFormatter < BaseOpalFormatter
+  def red(str)
+    print "\e[31m"+str+"\e[0m"
+  end
+
+  def green(str)
+    print "\e[32m"+str+"\e[0m"
+  end
+
+  def cyan(str)
+    print "\e[36m"+str+"\e[0m"
+  end
+
+  def log(str)
+    puts str
+  end
+
+  def after(state)
+    super
+    print_example(state)
+  end
+
+  def print_example(state)
+    unless exception?
+      green('.')
+    else
+      red(failure? ? 'F' : 'E')
+    end
+  end
+
+  def finish_with_code(code)
+    exit(code)
+  end
+end
+
+class NodeJSFormatter < ColoredDottedFormatter
+  def red(str)
+    `process.stdout.write("\u001b[31m"+#{str}+"\u001b[0m")`
+  end
+
+  def green(str)
+    `process.stdout.write("\u001b[32m"+#{str}+"\u001b[0m")`
+  end
+
+  def cyan(str)
+    `process.stdout.write("\u001b[36m"+#{str}+"\u001b[0m")`
+  end
+end
+
+class NodeJSDocFormatter < NodeJSFormatter
+  def before(example)
+    print example.description
+  end
+
+  def print_example(state)
+    (@exception && state) ? red(" ✗\n") : green(" ✓\n")
+  end
+end
+
+module InvertedFormatter
+  def initialize(out=nil)
+    super
+    @actually_passing = []
+  end
+
+  def register
+    MSpec.register :before, self
+    MSpec.register :exception, self
+    MSpec.register :after, self
+    MSpec.register :finish, self
+  end
+
+  def after(state=nil)
+    super
+    @actually_passing << @current_state unless exception?
+  end
+
+  def finish
+    puts "\n\nExpected #{@actually_passing.size} examples to fail:\n"
+    @actually_passing.each_with_index do |example, idx|
+      puts "  #{idx + 1}) #{example.description.inspect}"
+    end
+    puts "\n"
+  end
+end
diff --git a/spec/mspec-opal/runner.rb b/spec/mspec-opal/runner.rb
new file mode 100644
index 00000000..5eb30308
--- /dev/null
+++ b/spec/mspec-opal/runner.rb
@@ -0,0 +1,173 @@
+require 'mspec-opal/formatters'
+
+class OSpecFilter
+  def self.main
+    @main ||= self.new
+  end
+
+  def initialize
+    @filters = Set.new
+    @seen = Set.new
+  end
+
+  def register
+    if ENV['INVERT_RUNNING_MODE']
+      MSpec.register :include, self
+    else
+      MSpec.register :exclude, self
+    end
+  end
+
+  def ===(description)
+    @seen << description
+    @filters.include?(description)
+  end
+
+  def register_filters(description, block)
+    instance_eval(&block)
+  end
+
+  def fails(description)
+    @filters << description
+  end
+
+  def fails_badly(description)
+    if ENV['INVERT_RUNNING_MODE']
+      warn "WARNING: FAILS BADLY: Ignoring filter to avoid blocking the suite: #{description.inspect}"
+    else
+      @filters << description
+    end
+  end
+
+  def unused_filters_message(list: false)
+    unused = @filters - @seen
+    return if unused.size == 0
+
+    if list
+      puts
+      puts "Unused filters:"
+      unused.each {|u| puts "  fails #{u.inspect}"}
+      puts
+    else
+      warn "\nThere are #{unused.size} unused filters, re-run with ENV['LIST_UNUSED_FILTERS'] = true to list them\n\n"
+    end
+  end
+end
+
+class Object
+  def opal_filter(description, &block)
+    OSpecFilter.main.register_filters(description, block)
+  end
+
+  alias opal_unsupported_filter opal_filter
+end
+
+# MSpec relies on File.readable? to do method detection on backtraces
+class File
+  def self.readable?(path)
+    false
+  end
+end
+
+class OSpecFormatter
+  def self.main
+    @main ||= self.new
+  end
+
+  def default_formatter
+    formatters = {
+      'browser'      => BrowserFormatter,
+      'server'       => BrowserFormatter,
+      'chrome'       => DottedFormatter,
+      'node'         => NodeJSFormatter,
+      'nodejs'       => NodeJSFormatter,
+      'gjs'          => ColoredDottedFormatter,
+      'quickjs'      => ColoredDottedFormatter,
+      'nodedoc'      => NodeJSDocFormatter,
+      'nodejsdoc'    => NodeJSDocFormatter,
+      'dotted'       => DottedFormatter
+    }
+
+    formatter = formatters.fetch(ENV['FORMATTER']) do
+      warn "Using the default 'dotted' formatter, set the FORMATTER env var to select a different formatter (was: #{ENV['FORMATTER'].inspect}, options: #{formatters.keys.join(", ")})"
+      DottedFormatter
+    end
+
+    if ENV['INVERT_RUNNING_MODE']
+      formatter = Class.new(formatter)
+      formatter.include InvertedFormatter
+    end
+
+    formatter
+  end
+
+  def register(formatter_class = default_formatter)
+    formatter_class.new.register
+  end
+end
+
+class OpalBM
+  def self.main
+    @main ||= self.new
+  end
+
+  def register(repeat, bm_filepath)
+    `self.bm = {}`
+    `self.bm_filepath = bm_filepath`
+    MSpec.repeat = repeat
+    MSpec.register :before, self
+    MSpec.register :after,  self
+    MSpec.register :finish, self
+  end
+
+  def before(state = nil)
+    %x{
+      if (self.bm && !self.bm.hasOwnProperty(state.description)) {
+        self.bm[state.description] = {started: Date.now()};
+      }
+    }
+  end
+
+  def after(state = nil)
+    %x{
+      if (self.bm) {
+        self.bm[state.description].stopped = Date.now();
+      }
+    }
+  end
+
+  def finish
+    %x{
+      var obj = self.bm, key, val, report = '';
+      if (obj) {
+        for (key in obj) {
+          if (obj.hasOwnProperty(key)) {
+            val = obj[key];
+            report += key.replace(/\s/g, '_') + ' ' + ((val.stopped - val.started) / 1000) + '\n';
+          }
+        }
+        require('fs').writeFileSync(self.bm_filepath, report);
+      }
+    }
+  end
+end
+
+module OutputSilencer
+  def silence_stdout
+    original_stdout = $stdout
+    new_stdout = IO.new(1, 'w')
+    new_stdout.write_proc = ->s{}
+
+    begin
+      $stdout = new_stdout
+      yield
+    ensure
+      $stdout = original_stdout
+    end
+  end
+end
+
+OSpecFormatter.main.register
+OSpecFilter.main.register
+
+MSpec.enable_feature :encoding
diff --git a/spec/opal/compiler/irb_spec.rb b/spec/opal/compiler/irb_spec.rb
new file mode 100644
index 00000000..c78baccf
--- /dev/null
+++ b/spec/opal/compiler/irb_spec.rb
@@ -0,0 +1,44 @@
+require 'spec_helper'
+require 'native'
+
+describe Opal::Compiler do
+  describe "irb parser option" do
+    it "creates Opal.irb_vars if it does not exist" do
+      $global["Opal"].irb_vars = nil
+      eval_js compile("0;nil", :irb => true)
+
+      ($global["Opal"].irb_vars == nil).should be_false
+    end
+
+    it "does not create Opal.irb_vars if :irb option not passed" do
+      $global["Opal"].irb_vars = nil
+      eval_js compile("0;nil")
+
+      ($global["Opal"].irb_vars == nil).should be_true
+    end
+
+    it "sets each s(:lasgn) in the top level onto irb_vars" do
+      eval_js compile("foo = 42", :irb => true)
+      $global["Opal"].irb_vars.foo.should == 42
+    end
+
+    it "gets each s(:lvar) in the top level from irb_vars" do
+      eval_js compile("foo = 3.142; bar = foo", :irb => true)
+      $global["Opal"].irb_vars.bar.should == 3.142
+    end
+
+    it "persists local vars between parses" do
+      eval_js compile("foo = 'hello world'", :irb => true)
+      eval_js compile("bar = foo.upcase", :irb => true)
+      $global["Opal"].irb_vars.bar.should == "HELLO WORLD"
+    end
+
+    it "can still call top level methods" do
+      eval_js(compile("to_s", :irb => true)).should == "main"
+    end
+
+    def compile *args
+      Opal::Compiler.new(*args).compile
+    end
+  end
+end
diff --git a/spec/opal/compiler/unicode_spec.rb b/spec/opal/compiler/unicode_spec.rb
new file mode 100644
index 00000000..8c794fbf
--- /dev/null
+++ b/spec/opal/compiler/unicode_spec.rb
@@ -0,0 +1,10 @@
+require 'spec_helper'
+require 'opal-parser'
+
+describe Opal::Compiler do
+  describe "unicode support" do
+    it 'can compile code containing Unicode characters' do
+      -> { Opal::Compiler.new("'こんにちは'; p 1").compile }.should_not raise_error
+    end
+  end
+end
diff --git a/spec/opal/core/array/dup_spec.rb b/spec/opal/core/array/dup_spec.rb
new file mode 100644
index 00000000..0933ae90
--- /dev/null
+++ b/spec/opal/core/array/dup_spec.rb
@@ -0,0 +1,23 @@
+describe "Array#dup" do
+  it "should use slice optimization" do
+    a = Array.new
+    `a.slice = function() { return ['sliced'] }`
+    lambda { a.dup }.should_not raise_error
+    a.dup.should == ['sliced']
+  end
+
+  it "should use slice optimization on Array subclass" do
+    subclass = Class.new(Array)
+    a = subclass.new
+    `a.slice = function() { return ['sliced'] }`
+    lambda { a.dup }.should_not raise_error
+    a.dup.should == ['sliced']
+  end
+
+  it "should not use slice optimization when allocation is redefined" do
+    subclass = Class.new(Array)
+    a = subclass.new
+    subclass.define_singleton_method(:allocate) { raise 'Overriden method, no slice optimization for you!' }
+    lambda { a.dup }.should raise_error # dup should call allocate because the method is overriden
+  end
+end
diff --git a/spec/opal/core/array/intersection_spec.rb b/spec/opal/core/array/intersection_spec.rb
new file mode 100644
index 00000000..de95bc76
--- /dev/null
+++ b/spec/opal/core/array/intersection_spec.rb
@@ -0,0 +1,38 @@
+describe "Array#&" do
+  it "relies on Ruby's #hash (not JavaScript's #toString) for identifying array items" do
+    a1 = [ 123, '123']
+    a2 = ['123', 123 ]
+    (a1 & a2).should == a1
+    (a2 & a1).should == a2
+
+    a1 = [ Time.at(1429521600.1), Time.at(1429521600.9) ]
+    a2 = [ Time.at(1429521600.9), Time.at(1429521600.1) ]
+    (a1 & a2).should == a1
+    (a2 & a1).should == a2
+
+    a1 = [ Object.new, Object.new ]
+    a2 = [ Object.new, Object.new ]
+    (a1 & a2).should == []
+    (a2 & a1).should == []
+
+    a1 = [ 1, 2, 3, '1', '2', '3']
+    a2 = ['1', '2', '3', 1, 2, 3 ]
+    (a1 & a2).should == a1
+    (a2 & a1).should == a2
+
+    a1 = [ [1, 2, 3], '1,2,3']
+    a2 = ['1,2,3', [1, 2, 3] ]
+    (a1 & a2).should == a1
+    (a2 & a1).should == a2
+
+    a1 = [ true, 'true']
+    a2 = ['true', true ]
+    (a1 & a2).should == a1
+    (a2 & a1).should == a2
+
+    a1 = [ false, 'false']
+    a2 = ['false', false ]
+    (a1 & a2).should == a1
+    (a2 & a1).should == a2
+  end
+end
diff --git a/spec/opal/core/array/minus_spec.rb b/spec/opal/core/array/minus_spec.rb
new file mode 100644
index 00000000..df2c0510
--- /dev/null
+++ b/spec/opal/core/array/minus_spec.rb
@@ -0,0 +1,38 @@
+describe "Array#-" do
+  it "relies on Ruby's #hash (not JavaScript's #toString) for identifying array items" do
+    a1 = [ 123 ]
+    a2 = ['123']
+    (a1 - a2).should == a1
+    (a2 - a1).should == a2
+
+    a1 = [ Time.at(1429521600.1) ]
+    a2 = [ Time.at(1429521600.9) ]
+    (a1 - a2).should == a1
+    (a2 - a1).should == a2
+
+    a1 = [ Object.new ]
+    a2 = [ Object.new ]
+    (a1 - a2).should == a1
+    (a2 - a1).should == a2
+
+    a1 = [ 1, 2, 3 ]
+    a2 = ['1', '2', '3']
+    (a1 - a2).should == a1
+    (a2 - a1).should == a2
+
+    a1 = [ 1, 2, 3 ]
+    a2 = ['1,2,3']
+    (a1 - a2).should == a1
+    (a2 - a1).should == a2
+
+    a1 = [ true ]
+    a2 = ['true']
+    (a1 - a2).should == a1
+    (a2 - a1).should == a2
+
+    a1 = [ false ]
+    a2 = ['false']
+    (a1 - a2).should == a1
+    (a2 - a1).should == a2
+  end
+end
diff --git a/spec/opal/core/array/union_spec.rb b/spec/opal/core/array/union_spec.rb
new file mode 100644
index 00000000..2d26bd59
--- /dev/null
+++ b/spec/opal/core/array/union_spec.rb
@@ -0,0 +1,38 @@
+describe "Array#|" do
+  it "relies on Ruby's #hash (not JavaScript's #toString) for identifying array items" do
+    a1 = [ 123, '123']
+    a2 = ['123', 123 ]
+    (a1 | a2).should == a1
+    (a2 | a1).should == a2
+
+    a1 = [ Time.at(1429521600.1), Time.at(1429521600.9) ]
+    a2 = [ Time.at(1429521600.9), Time.at(1429521600.1) ]
+    (a1 | a2).should == a1
+    (a2 | a1).should == a2
+
+    a1 = [ Object.new, Object.new ]
+    a2 = [ Object.new, Object.new ]
+    (a1 | a2).should == a1 + a2
+    (a2 | a1).should == a2 + a1
+
+    a1 = [ 1, 2, 3, '1', '2', '3']
+    a2 = ['1', '2', '3', 1, 2, 3 ]
+    (a1 | a2).should == a1
+    (a2 | a1).should == a2
+
+    a1 = [ [1, 2, 3], '1,2,3']
+    a2 = ['1,2,3', [1, 2, 3] ]
+    (a1 | a2).should == a1
+    (a2 | a1).should == a2
+
+    a1 = [ true, 'true']
+    a2 = ['true', true ]
+    (a1 | a2).should == a1
+    (a2 | a1).should == a2
+
+    a1 = [ false, 'false']
+    a2 = ['false', false ]
+    (a1 | a2).should == a1
+    (a2 | a1).should == a2
+  end
+end
diff --git a/spec/opal/core/array/uniq_spec.rb b/spec/opal/core/array/uniq_spec.rb
new file mode 100644
index 00000000..010589ed
--- /dev/null
+++ b/spec/opal/core/array/uniq_spec.rb
@@ -0,0 +1,49 @@
+describe "Array#uniq" do
+  it "relies on Ruby's #hash (not JavaScript's #toString) for identifying array items" do
+    a = [ 123, '123']
+    a.uniq.should == a
+
+    a = [ Time.at(1429521600.1), Time.at(1429521600.9) ]
+    a.uniq.should == a
+
+    a = [ Object.new, Object.new ]
+    a.uniq.should == a
+
+    a = [ 1, 2, 3, '1', '2', '3']
+    a.uniq.should == a
+
+    a = [ [1, 2, 3], '1,2,3']
+    a.uniq.should == a
+
+    a = [ true, 'true']
+    a.uniq.should == a
+
+    a = [ false, 'false']
+    a.uniq.should == a
+  end
+end
+
+describe "Array#uniq!" do
+  it "relies on Ruby's #hash (not JavaScript's #toString) for identifying array items" do
+    a = [ 123, '123']
+    a.uniq!.should == nil
+
+    a = [ Time.at(1429521600.1), Time.at(1429521600.9) ]
+    a.uniq!.should == nil
+
+    a = [ Object.new, Object.new ]
+    a.uniq!.should == nil
+
+    a = [ 1, 2, 3, '1', '2', '3']
+    a.uniq!.should == nil
+
+    a = [ [1, 2, 3], '1,2,3']
+    a.uniq!.should == nil
+
+    a = [ true, 'true']
+    a.uniq!.should == nil
+
+    a = [ false, 'false']
+    a.uniq!.should == nil
+  end
+end
diff --git a/spec/opal/core/array/zip_spec.rb b/spec/opal/core/array/zip_spec.rb
new file mode 100644
index 00000000..77aa00de
--- /dev/null
+++ b/spec/opal/core/array/zip_spec.rb
@@ -0,0 +1,12 @@
+describe "Array#zip" do
+  it "respects block arity" do
+    foo = ['A', 'B']
+    values = []
+
+    foo.zip(foo) do | a,b |
+      values << [a, b]
+    end
+
+    values.should == [['A', 'A'], ['B', 'B']]
+  end
+end
diff --git a/spec/opal/core/boolean_spec.rb b/spec/opal/core/boolean_spec.rb
new file mode 100644
index 00000000..7efeeed1
--- /dev/null
+++ b/spec/opal/core/boolean_spec.rb
@@ -0,0 +1,44 @@
+require 'spec_helper'
+
+describe "TrueClass/FalseClass" do
+  it 'correctly resolves a boolean class' do
+    expect(true.class).to eq(TrueClass)
+    expect(false.class).to eq(FalseClass)
+
+    expect(true.class).not_to eq(false.class)
+  end
+
+  it 'correctly resolves a boolean class with #is_a?' do
+    expect(true.is_a? TrueClass).to be_true
+    expect(false.is_a? FalseClass).to be_true
+    expect(false.is_a? TrueClass).to be_false
+    expect(true.is_a? FalseClass).to be_false
+  end
+
+  it 'correctly resolves a boolean class with #===' do
+    expect(TrueClass === true).to be_true
+    expect(FalseClass === false).to be_true
+    expect(TrueClass === false).to be_false
+    expect(FalseClass === true).to be_false
+    expect(TrueClass === 6).to be_false
+    expect(true === true).to be_true
+    expect(false === false).to be_true
+  end
+
+  it 'allows defining methods on TrueClass/FalseClass' do
+    class TrueClass
+      def test_opal
+        false
+      end
+    end
+
+    class FalseClass
+      def test_opal
+        true
+      end
+    end
+
+    expect(true.test_opal).to be_false
+    expect(false.test_opal).to be_true
+  end
+end
diff --git a/spec/opal/core/class/inherited_spec.rb b/spec/opal/core/class/inherited_spec.rb
new file mode 100644
index 00000000..4033fd66
--- /dev/null
+++ b/spec/opal/core/class/inherited_spec.rb
@@ -0,0 +1,18 @@
+module ModuleInheritedTestModule
+  class A
+    def self.inherited(subclass)
+      $ScratchPad << subclass.name
+    end
+  end
+end
+
+describe 'Class#inherited' do
+  it 'gets called after setting a base scope of the subclass' do
+    $ScratchPad = []
+    module ModuleInheritedTestModule
+      class B < A
+      end
+    end
+    $ScratchPad.should == ['ModuleInheritedTestModule::B']
+  end
+end
diff --git a/spec/opal/core/enumerable/all_break_spec.rb b/spec/opal/core/enumerable/all_break_spec.rb
new file mode 100644
index 00000000..e712e199
--- /dev/null
+++ b/spec/opal/core/enumerable/all_break_spec.rb
@@ -0,0 +1,5 @@
+describe "Enumerable#all?" do
+  it "breaks out with the proper value" do
+    [1, 2, 3].all? { break 42 }.should == 42
+  end
+end
diff --git a/spec/opal/core/enumerable/any_break_spec.rb b/spec/opal/core/enumerable/any_break_spec.rb
new file mode 100644
index 00000000..9c2bab97
--- /dev/null
+++ b/spec/opal/core/enumerable/any_break_spec.rb
@@ -0,0 +1,5 @@
+describe "Enumerable#any?" do
+  it "breaks out with the proper value" do
+    [1, 2, 3].any? { break 42 }.should == 42
+  end
+end
diff --git a/spec/opal/core/enumerable/collect_break_spec.rb b/spec/opal/core/enumerable/collect_break_spec.rb
new file mode 100644
index 00000000..feecab93
--- /dev/null
+++ b/spec/opal/core/enumerable/collect_break_spec.rb
@@ -0,0 +1,13 @@
+describe "Enumerable#collect" do
+  class Test
+    include Enumerable
+
+    def each(&block)
+      [1, 2, 3].each(&block)
+    end
+  end
+
+  it "breaks out with the proper value" do
+    Test.new.collect { break 42 }.should == 42
+  end
+end
diff --git a/spec/opal/core/enumerable/count_break_spec.rb b/spec/opal/core/enumerable/count_break_spec.rb
new file mode 100644
index 00000000..bbcd4e1d
--- /dev/null
+++ b/spec/opal/core/enumerable/count_break_spec.rb
@@ -0,0 +1,5 @@
+describe "Enumerable#count" do
+  it "breaks out with the proper value" do
+    [1, 2, 3].count { break 42 }.should == 42
+  end
+end
diff --git a/spec/opal/core/enumerable/detect_break_spec.rb b/spec/opal/core/enumerable/detect_break_spec.rb
new file mode 100644
index 00000000..bcff0693
--- /dev/null
+++ b/spec/opal/core/enumerable/detect_break_spec.rb
@@ -0,0 +1,5 @@
+describe "Enumerable#detect" do
+  it "breaks out with the proper value" do
+    [1, 2, 3].detect { break 42 }.should == 42
+  end
+end
diff --git a/spec/opal/core/enumerable/drop_while_break_spec.rb b/spec/opal/core/enumerable/drop_while_break_spec.rb
new file mode 100644
index 00000000..f87d8238
--- /dev/null
+++ b/spec/opal/core/enumerable/drop_while_break_spec.rb
@@ -0,0 +1,5 @@
+describe "Enumerable#drop_while" do
+  it "breaks out with the proper value" do
+    [1, 2, 3].drop_while { break 42 }.should == 42
+  end
+end
diff --git a/spec/opal/core/enumerable/each_slice_break_spec.rb b/spec/opal/core/enumerable/each_slice_break_spec.rb
new file mode 100644
index 00000000..b3408e96
--- /dev/null
+++ b/spec/opal/core/enumerable/each_slice_break_spec.rb
@@ -0,0 +1,6 @@
+describe "Enumerable#each_slice" do
+  it "breaks out with the proper value" do
+    [1, 2, 3].each_slice(1) { break 42 }.should == 42
+    [1, 2, 3].each_slice(2) { break 42 }.should == 42
+  end
+end
diff --git a/spec/opal/core/enumerable/each_with_index_break_spec.rb b/spec/opal/core/enumerable/each_with_index_break_spec.rb
new file mode 100644
index 00000000..dd5c45e1
--- /dev/null
+++ b/spec/opal/core/enumerable/each_with_index_break_spec.rb
@@ -0,0 +1,5 @@
+describe "Enumerable#each_with_index" do
+  it "breaks out with the proper value" do
+    [1, 2, 3].each_with_index { break 42 }.should == 42
+  end
+end
diff --git a/spec/opal/core/enumerable/each_with_object_break_spec.rb b/spec/opal/core/enumerable/each_with_object_break_spec.rb
new file mode 100644
index 00000000..775c0f3d
--- /dev/null
+++ b/spec/opal/core/enumerable/each_with_object_break_spec.rb
@@ -0,0 +1,5 @@
+describe "Enumerable#each_with_object" do
+  it "breaks out with the proper value" do
+    [1, 2, 3].each_with_object(23) { break 42 }.should == 42
+  end
+end
diff --git a/spec/opal/core/enumerable/find_all_break_spec.rb b/spec/opal/core/enumerable/find_all_break_spec.rb
new file mode 100644
index 00000000..191d49a9
--- /dev/null
+++ b/spec/opal/core/enumerable/find_all_break_spec.rb
@@ -0,0 +1,5 @@
+describe "Enumerable#find_all" do
+  it "breaks out with the proper value" do
+    [1, 2, 3].find_all { break 42 }.should == 42
+  end
+end
diff --git a/spec/opal/core/enumerable/find_index_break_spec.rb b/spec/opal/core/enumerable/find_index_break_spec.rb
new file mode 100644
index 00000000..822e36aa
--- /dev/null
+++ b/spec/opal/core/enumerable/find_index_break_spec.rb
@@ -0,0 +1,5 @@
+describe "Enumerable#find_index" do
+  it "breaks out with the proper value" do
+    [1, 2, 3].find_index { break 42 }.should == 42
+  end
+end
diff --git a/spec/opal/core/enumerable/grep_break_spec.rb b/spec/opal/core/enumerable/grep_break_spec.rb
new file mode 100644
index 00000000..957ab917
--- /dev/null
+++ b/spec/opal/core/enumerable/grep_break_spec.rb
@@ -0,0 +1,5 @@
+describe "Enumerable#grep" do
+  it "breaks out with the proper value" do
+    [1, 2, 3].grep(1) { break 42 }.should == 42
+  end
+end
diff --git a/spec/opal/core/enumerable/max_break_spec.rb b/spec/opal/core/enumerable/max_break_spec.rb
new file mode 100644
index 00000000..48a84c14
--- /dev/null
+++ b/spec/opal/core/enumerable/max_break_spec.rb
@@ -0,0 +1,5 @@
+describe "Enumerable#max" do
+  it "breaks out with the proper value" do
+    [1, 2, 3].max { break 42 }.should == 42
+  end
+end
diff --git a/spec/opal/core/enumerable/max_by_break_spec.rb b/spec/opal/core/enumerable/max_by_break_spec.rb
new file mode 100644
index 00000000..ccad79fd
--- /dev/null
+++ b/spec/opal/core/enumerable/max_by_break_spec.rb
@@ -0,0 +1,5 @@
+describe "Enumerable#max_by" do
+  it "breaks out with the proper value" do
+    [1, 2, 3].max_by { break 42 }.should == 42
+  end
+end
diff --git a/spec/opal/core/enumerable/min_break_spec.rb b/spec/opal/core/enumerable/min_break_spec.rb
new file mode 100644
index 00000000..c4e7ade2
--- /dev/null
+++ b/spec/opal/core/enumerable/min_break_spec.rb
@@ -0,0 +1,5 @@
+describe "Enumerable#min" do
+  it "breaks out with the proper value" do
+    [1, 2, 3].min { break 42 }.should == 42
+  end
+end
diff --git a/spec/opal/core/enumerable/min_by_break_spec.rb b/spec/opal/core/enumerable/min_by_break_spec.rb
new file mode 100644
index 00000000..f1b6b8ae
--- /dev/null
+++ b/spec/opal/core/enumerable/min_by_break_spec.rb
@@ -0,0 +1,5 @@
+describe "Enumerable#min_by" do
+  it "breaks out with the proper value" do
+    [1, 2, 3].min_by { break 42 }.should == 42
+  end
+end
diff --git a/spec/opal/core/enumerable/none_break_spec.rb b/spec/opal/core/enumerable/none_break_spec.rb
new file mode 100644
index 00000000..4679f549
--- /dev/null
+++ b/spec/opal/core/enumerable/none_break_spec.rb
@@ -0,0 +1,5 @@
+describe "Enumerable#none?" do
+  it "breaks out with the proper value" do
+    [1, 2, 3].none? { break 42 }.should == 42
+  end
+end
diff --git a/spec/opal/core/enumerable/one_break_spec.rb b/spec/opal/core/enumerable/one_break_spec.rb
new file mode 100644
index 00000000..28f73c10
--- /dev/null
+++ b/spec/opal/core/enumerable/one_break_spec.rb
@@ -0,0 +1,5 @@
+describe "Enumerable#one?" do
+  it "breaks out with the proper value" do
+    [1, 2, 3].one? { break 42 }.should == 42
+  end
+end
diff --git a/spec/opal/core/enumerable/reduce_break_spec.rb b/spec/opal/core/enumerable/reduce_break_spec.rb
new file mode 100644
index 00000000..41371719
--- /dev/null
+++ b/spec/opal/core/enumerable/reduce_break_spec.rb
@@ -0,0 +1,5 @@
+describe "Enumerable#reduce" do
+  it "breaks out with the proper value" do
+    [1, 2, 3].reduce { break 42 }.should == 42
+  end
+end
diff --git a/spec/opal/core/enumerable/take_while_break_spec.rb b/spec/opal/core/enumerable/take_while_break_spec.rb
new file mode 100644
index 00000000..31181fac
--- /dev/null
+++ b/spec/opal/core/enumerable/take_while_break_spec.rb
@@ -0,0 +1,5 @@
+describe "Enumerable#take_while" do
+  it "breaks out with the proper value" do
+    [1, 2, 3].take_while { break 42 }.should == 42
+  end
+end
diff --git a/spec/opal/core/enumerator/with_index_spec.rb b/spec/opal/core/enumerator/with_index_spec.rb
new file mode 100644
index 00000000..aa6bf8c9
--- /dev/null
+++ b/spec/opal/core/enumerator/with_index_spec.rb
@@ -0,0 +1,6 @@
+describe "Enumerator#with_index" do
+  it "returns the result of the previously called method" do
+    [1, 2, 3].each.with_index { |item, index| item * 2 }.should == [1, 2, 3]
+    [1, 2, 3].map.with_index  { |item, index| item * 2 }.should == [2, 4, 6]
+  end
+end
diff --git a/spec/opal/core/exception_spec.rb b/spec/opal/core/exception_spec.rb
new file mode 100644
index 00000000..ca99e170
--- /dev/null
+++ b/spec/opal/core/exception_spec.rb
@@ -0,0 +1,8 @@
+require 'spec_helper'
+
+describe "Native exception" do
+  it "handles messages for native exceptions" do
+    exception = `new Error("native message")`
+    exception.message.should == "native message"
+  end
+end
diff --git a/spec/opal/core/fixtures/require_tree_files/file 1.rb b/spec/opal/core/fixtures/require_tree_files/file 1.rb
new file mode 100644
index 00000000..93cc4dff
--- /dev/null
+++ b/spec/opal/core/fixtures/require_tree_files/file 1.rb	
@@ -0,0 +1 @@
+$ScratchPad << File.basename(__FILE__)
diff --git a/spec/opal/core/fixtures/require_tree_files/file 2.rb b/spec/opal/core/fixtures/require_tree_files/file 2.rb
new file mode 100644
index 00000000..93cc4dff
--- /dev/null
+++ b/spec/opal/core/fixtures/require_tree_files/file 2.rb	
@@ -0,0 +1 @@
+$ScratchPad << File.basename(__FILE__)
diff --git a/spec/opal/core/fixtures/require_tree_files/file 3.rb b/spec/opal/core/fixtures/require_tree_files/file 3.rb
new file mode 100644
index 00000000..93cc4dff
--- /dev/null
+++ b/spec/opal/core/fixtures/require_tree_files/file 3.rb	
@@ -0,0 +1 @@
+$ScratchPad << File.basename(__FILE__)
diff --git a/spec/opal/core/fixtures/require_tree_files/file 4.rb b/spec/opal/core/fixtures/require_tree_files/file 4.rb
new file mode 100644
index 00000000..93cc4dff
--- /dev/null
+++ b/spec/opal/core/fixtures/require_tree_files/file 4.rb	
@@ -0,0 +1 @@
+$ScratchPad << File.basename(__FILE__)
diff --git a/spec/opal/core/fixtures/require_tree_files/file 5.rb b/spec/opal/core/fixtures/require_tree_files/file 5.rb
new file mode 100644
index 00000000..93cc4dff
--- /dev/null
+++ b/spec/opal/core/fixtures/require_tree_files/file 5.rb	
@@ -0,0 +1 @@
+$ScratchPad << File.basename(__FILE__)
diff --git a/spec/opal/core/fixtures/require_tree_files/nested/nested 1.rb b/spec/opal/core/fixtures/require_tree_files/nested/nested 1.rb
new file mode 100644
index 00000000..93cc4dff
--- /dev/null
+++ b/spec/opal/core/fixtures/require_tree_files/nested/nested 1.rb	
@@ -0,0 +1 @@
+$ScratchPad << File.basename(__FILE__)
diff --git a/spec/opal/core/fixtures/require_tree_files/nested/nested 2.rb b/spec/opal/core/fixtures/require_tree_files/nested/nested 2.rb
new file mode 100644
index 00000000..93cc4dff
--- /dev/null
+++ b/spec/opal/core/fixtures/require_tree_files/nested/nested 2.rb	
@@ -0,0 +1 @@
+$ScratchPad << File.basename(__FILE__)
diff --git a/spec/opal/core/fixtures/require_tree_files/other/other 1.rb b/spec/opal/core/fixtures/require_tree_files/other/other 1.rb
new file mode 100644
index 00000000..93cc4dff
--- /dev/null
+++ b/spec/opal/core/fixtures/require_tree_files/other/other 1.rb	
@@ -0,0 +1 @@
+$ScratchPad << File.basename(__FILE__)
diff --git a/spec/opal/core/fixtures/require_tree_with_dot/file 1.rb b/spec/opal/core/fixtures/require_tree_with_dot/file 1.rb
new file mode 100644
index 00000000..93cc4dff
--- /dev/null
+++ b/spec/opal/core/fixtures/require_tree_with_dot/file 1.rb	
@@ -0,0 +1 @@
+$ScratchPad << File.basename(__FILE__)
diff --git a/spec/opal/core/fixtures/require_tree_with_dot/file 2.rb b/spec/opal/core/fixtures/require_tree_with_dot/file 2.rb
new file mode 100644
index 00000000..93cc4dff
--- /dev/null
+++ b/spec/opal/core/fixtures/require_tree_with_dot/file 2.rb	
@@ -0,0 +1 @@
+$ScratchPad << File.basename(__FILE__)
diff --git a/spec/opal/core/fixtures/require_tree_with_dot/file 3.rb b/spec/opal/core/fixtures/require_tree_with_dot/file 3.rb
new file mode 100644
index 00000000..93cc4dff
--- /dev/null
+++ b/spec/opal/core/fixtures/require_tree_with_dot/file 3.rb	
@@ -0,0 +1 @@
+$ScratchPad << File.basename(__FILE__)
diff --git a/spec/opal/core/fixtures/require_tree_with_dot/index.rb b/spec/opal/core/fixtures/require_tree_with_dot/index.rb
new file mode 100644
index 00000000..625fc167
--- /dev/null
+++ b/spec/opal/core/fixtures/require_tree_with_dot/index.rb
@@ -0,0 +1,3 @@
+$ScratchPad << File.basename(__FILE__)+'-pre'
+require_tree '.'
+$ScratchPad << File.basename(__FILE__)+'-post'
diff --git a/spec/opal/core/hash/internals_spec.rb b/spec/opal/core/hash/internals_spec.rb
new file mode 100644
index 00000000..9194eac6
--- /dev/null
+++ b/spec/opal/core/hash/internals_spec.rb
@@ -0,0 +1,339 @@
+describe 'Hash' do
+
+  describe 'internal implementation of string keys' do
+    before :each do
+      @h = {'a' => 123, 'b' => 456}
+    end
+
+    it 'stores keys directly as strings in the `keys` array' do
+      `#@h.$$keys.length`.should == 2
+      `#@h.$$keys[0]`.should == 'a'
+      `#@h.$$keys[1]`.should == 'b'
+
+      @h['c'] = 789
+
+      `#@h.$$keys.length`.should == 3
+      `#@h.$$keys[2]`.should == 'c'
+    end
+
+    it 'stores values directly as objects in the `smap` object by their corresponding string key' do
+      `Object.keys(#@h.$$smap).length`.should == 2
+      `#@h.$$smap['a']`.should == 123
+      `#@h.$$smap['b']`.should == 456
+
+      @h['c'] = 789
+
+      `Object.keys(#@h.$$smap).length`.should == 3
+      `#@h.$$smap['c']`.should == 789
+    end
+
+    it 'does not use the `map` object' do
+      `Object.keys(#@h.$$map).length`.should == 0
+
+      @h['c'] = 789
+
+      `Object.keys(#@h.$$map).length`.should == 0
+    end
+
+    it 'uses the `map` object when an object key is added' do
+      `Object.keys(#@h.$$map).length`.should == 0
+
+      @h[Object.new] = 789
+
+      `Object.keys(#@h.$$map).length`.should == 1
+    end
+
+    it 'converts string objects to values when used to delete keys' do
+      h = {'a' => 'a'}
+      k = String.new(h.keys.first)
+      h.delete(k)
+      h.should == {}
+    end
+  end
+
+  describe 'internal implementation of object keys' do
+    before :each do
+      @obj1 = Object.new
+      @obj2 = Object.new
+      @h = {@obj1 => 123, @obj2 => 456}
+    end
+
+    it 'uses a data structure called "bucket", which is a wrapper object with `key`, `key_hash`, `value`, and `next` properties' do
+      bucket = `#@h.$$keys[0]`
+      `#{bucket}.key`.should == @obj1
+      `#{bucket}.key_hash`.should == @obj1.hash
+      `#{bucket}.value`.should == 123
+      `#{bucket}.next === undefined`.should == true
+    end
+
+    it 'stores keys in the `keys` array as "bucket" objects' do
+      `#@h.$$keys.length`.should == 2
+      `#@h.$$keys[0].key`.should == @obj1
+      `#@h.$$keys[1].key`.should == @obj2
+
+      obj3 = Object.new
+      @h[obj3] = 789
+
+      `#@h.$$keys.length`.should == 3
+      `#@h.$$keys[2].key`.should == obj3
+    end
+
+    it 'stores values in the `map` object as "bucket" objects by #hash string of their corresponding object key' do
+      `Object.keys(#@h.$$map).length`.should == 2
+      `#@h.$$map[#{@obj1.hash}].value`.should == 123
+      `#@h.$$map[#{@obj2.hash}].value`.should == 456
+
+      obj3 = Object.new
+      @h[obj3] = 789
+
+      `Object.keys(#@h.$$map).length`.should == 3
+      `#@h.$$map[#{obj3.hash}].value`.should == 789
+    end
+
+    it 'keeps a pointer to the same "bucket" object in the `keys` array and in the `map` object' do
+      `#@h.$$map[#{@obj1.hash}] === #@h.$$keys[0]`.should == true
+      `#@h.$$map[#{@obj2.hash}] === #@h.$$keys[1]`.should == true
+    end
+
+    it 'does not use the `smap` object' do
+      `Object.keys(#@h.$$smap).length`.should == 0
+
+      @h[Object.new] = 789
+
+      `Object.keys(#@h.$$smap).length`.should == 0
+    end
+
+    it 'uses the `smap` object when a string key is added' do
+      `Object.keys(#@h.$$smap).length`.should == 0
+
+      @h['c'] = 789
+
+      `Object.keys(#@h.$$smap).length`.should == 1
+    end
+
+    it 'allows multiple keys that #hash to the same value to be stored in the Hash' do
+      @hash = {}
+
+      @mock1 = mock('mock1')
+      @mock1.should_receive(:hash).at_least(1).and_return('hhh')
+      @mock1.should_receive(:eql?).exactly(0)
+
+      @mock2 = mock('mock2')
+      @mock2.should_receive(:hash).at_least(1).and_return('hhh')
+      @mock2.should_receive(:eql?).exactly(1).and_return(false)
+
+      @mock3 = mock('mock3')
+      @mock3.should_receive(:hash).at_least(1).and_return('hhh')
+      @mock3.should_receive(:eql?).exactly(2).and_return(false)
+
+      `Object.keys(#@hash.$$map).length`.should == 0
+      `#@hash.$$keys.length`.should == 0
+
+      @hash[@mock1] = 123
+      `Object.keys(#@hash.$$map).length`.should == 1
+      `#@hash.$$keys.length`.should == 1
+      `#@hash.$$keys[0] === #@hash.$$map['hhh']`.should == true
+      `#@hash.$$keys[0].key`.should == @mock1
+      `#@hash.$$keys[0].key_hash`.should == @mock1.hash
+      `#@hash.$$keys[0].value`.should == 123
+      `#@hash.$$keys[0].next === undefined`.should == true
+
+      @hash[@mock2] = 456
+      `Object.keys(#@hash.$$map).length`.should == 1
+      `#@hash.$$keys.length`.should == 2
+      `#@hash.$$keys[1] === #@hash.$$map['hhh'].next`.should == true
+      `#@hash.$$keys[1].key`.should == @mock2
+      `#@hash.$$keys[1].key_hash`.should == @mock2.hash
+      `#@hash.$$keys[1].value`.should == 456
+      `#@hash.$$keys[1].next === undefined`.should == true
+
+      @hash[@mock3] = 789
+      `Object.keys(#@hash.$$map).length`.should == 1
+      `#@hash.$$keys.length`.should == 3
+      `#@hash.$$keys[2] === #@hash.$$map['hhh'].next.next`.should == true
+      `#@hash.$$keys[2].key`.should == @mock3
+      `#@hash.$$keys[2].key_hash`.should == @mock3.hash
+      `#@hash.$$keys[2].value`.should == 789
+      `#@hash.$$keys[2].next === undefined`.should == true
+
+      obj = Object.new
+      @hash[obj] = 999
+      `Object.keys(#@hash.$$map).length`.should == 2
+      `#@hash.$$keys.length`.should == 4
+      `#@hash.$$keys[3] === #@hash.$$map[#{obj.hash}]`.should == true
+      `#@hash.$$keys[3].key`.should == obj
+      `#@hash.$$keys[3].key_hash`.should == obj.hash
+      `#@hash.$$keys[3].value`.should == 999
+      `#@hash.$$keys[3].next === undefined`.should == true
+    end
+
+    it 'correctly updates internal data structures when deleting keys' do
+      @mock1 = mock('mock1')
+      @mock1.should_receive(:hash).any_number_of_times.and_return('hhh')
+      @mock1.should_receive(:eql?).any_number_of_times.and_return(false)
+
+      @mock2 = mock('mock2')
+      @mock2.should_receive(:hash).any_number_of_times.and_return('hhh')
+      @mock2.should_receive(:eql?).any_number_of_times.and_return(false)
+
+      @mock3 = mock('mock3')
+      @mock3.should_receive(:hash).any_number_of_times.and_return('hhh')
+      @mock3.should_receive(:eql?).any_number_of_times.and_return(false)
+
+      @mock4 = mock('mock4')
+      @mock4.should_receive(:hash).any_number_of_times.and_return('hhh')
+      @mock4.should_receive(:eql?).any_number_of_times.and_return(false)
+
+      @hash = {
+        @mock1 => 123,
+        'a'    => 'abc',
+        @mock2 => 456,
+        'b'    => 'def',
+        @mock3 => 789,
+        @mock4 => 999,
+        'c'    => 'ghi',
+        @obj1  => 'xyz'
+      }
+
+      `Opal.hasOwnProperty.call(#@hash.$$map, 'hhh')`.should == true
+      `Opal.hasOwnProperty.call(#@hash.$$map, #{@obj1.hash})`.should == true
+      `Opal.hasOwnProperty.call(#@hash.$$smap, 'a')`.should == true
+      `Opal.hasOwnProperty.call(#@hash.$$smap, 'b')`.should == true
+      `Opal.hasOwnProperty.call(#@hash.$$smap, 'c')`.should == true
+
+      `#@hash.$$keys.length`.should == 8
+      `Object.keys(#@hash.$$map).length`.should == 2
+      `Object.keys(#@hash.$$smap).length`.should == 3
+
+      `#@hash.$$keys[0].key`.should == @mock1
+      `#@hash.$$keys[1]`.should == 'a'
+      `#@hash.$$keys[2].key`.should == @mock2
+      `#@hash.$$keys[3]`.should == 'b'
+      `#@hash.$$keys[4].key`.should == @mock3
+      `#@hash.$$keys[5].key`.should == @mock4
+      `#@hash.$$keys[6]`.should == 'c'
+      `#@hash.$$keys[7].key`.should == @obj1
+
+      `#@hash.$$map['hhh'] === #@hash.$$keys[0]`.should == true
+      `#@hash.$$keys[0].next === #@hash.$$keys[2]`.should == true
+      `#@hash.$$keys[2].next === #@hash.$$keys[4]`.should == true
+      `#@hash.$$keys[4].next === #@hash.$$keys[5]`.should == true
+      `#@hash.$$keys[5].next === undefined`.should == true
+
+      @hash.delete @mock2
+
+      `#@hash.$$keys.length`.should == 7
+      `Object.keys(#@hash.$$map).length`.should == 2
+      `Object.keys(#@hash.$$smap).length`.should == 3
+
+      `#@hash.$$keys[0].key`.should == @mock1
+      `#@hash.$$keys[1]`.should == 'a'
+      `#@hash.$$keys[2]`.should == 'b'
+      `#@hash.$$keys[3].key`.should == @mock3
+      `#@hash.$$keys[4].key`.should == @mock4
+      `#@hash.$$keys[5]`.should == 'c'
+      `#@hash.$$keys[6].key`.should == @obj1
+
+      `#@hash.$$map['hhh'] === #@hash.$$keys[0]`.should == true
+      `#@hash.$$keys[0].next === #@hash.$$keys[3]`.should == true
+      `#@hash.$$keys[3].next === #@hash.$$keys[4]`.should == true
+      `#@hash.$$keys[4].next === undefined`.should == true
+
+      @hash.delete @mock4
+
+      `#@hash.$$keys.length`.should == 6
+      `Object.keys(#@hash.$$map).length`.should == 2
+      `Object.keys(#@hash.$$smap).length`.should == 3
+
+      `#@hash.$$keys[0].key`.should == @mock1
+      `#@hash.$$keys[1]`.should == 'a'
+      `#@hash.$$keys[2]`.should == 'b'
+      `#@hash.$$keys[3].key`.should == @mock3
+      `#@hash.$$keys[4]`.should == 'c'
+      `#@hash.$$keys[5].key`.should == @obj1
+
+      `#@hash.$$map['hhh'] === #@hash.$$keys[0]`.should == true
+      `#@hash.$$keys[0].next === #@hash.$$keys[3]`.should == true
+      `#@hash.$$keys[3].next === undefined`.should == true
+
+      @hash.delete @mock1
+
+      `#@hash.$$keys.length`.should == 5
+      `Object.keys(#@hash.$$map).length`.should == 2
+      `Object.keys(#@hash.$$smap).length`.should == 3
+
+      `#@hash.$$keys[0]`.should == 'a'
+      `#@hash.$$keys[1]`.should == 'b'
+      `#@hash.$$keys[2].key`.should == @mock3
+      `#@hash.$$keys[3]`.should == 'c'
+      `#@hash.$$keys[4].key`.should == @obj1
+
+      `#@hash.$$map['hhh'] === #@hash.$$keys[2]`.should == true
+      `#@hash.$$keys[2].next === undefined`.should == true
+
+      @hash.delete @mock3
+
+      `#@hash.$$keys.length`.should == 4
+      `Object.keys(#@hash.$$map).length`.should == 1
+      `Object.keys(#@hash.$$smap).length`.should == 3
+
+      `#@hash.$$keys[0]`.should == 'a'
+      `#@hash.$$keys[1]`.should == 'b'
+      `#@hash.$$keys[2]`.should == 'c'
+      `#@hash.$$keys[3].key`.should == @obj1
+
+      `#@hash.$$map['hhh'] === undefined`.should == true
+
+      @hash.delete @obj1
+
+      `#@hash.$$keys.length`.should == 3
+      `Object.keys(#@hash.$$map).length`.should == 0
+      `Object.keys(#@hash.$$smap).length`.should == 3
+
+      `#@hash.$$keys[0]`.should == 'a'
+      `#@hash.$$keys[1]`.should == 'b'
+      `#@hash.$$keys[2]`.should == 'c'
+
+      `#@hash.$$map[#{@obj1.hash}] === undefined`.should == true
+
+      @hash.delete 'b'
+
+      `#@hash.$$keys.length`.should == 2
+      `Object.keys(#@hash.$$map).length`.should == 0
+      `Object.keys(#@hash.$$smap).length`.should == 2
+
+      `#@hash.$$keys[0]`.should == 'a'
+      `#@hash.$$keys[1]`.should == 'c'
+      `#@hash.$$smap['a']`.should == 'abc'
+      `#@hash.$$smap['b'] === undefined`.should == true
+      `#@hash.$$smap['c']`.should == 'ghi'
+
+      @hash.delete 'c'
+
+      `#@hash.$$keys.length`.should == 1
+      `Object.keys(#@hash.$$map).length`.should == 0
+      `Object.keys(#@hash.$$smap).length`.should == 1
+
+      `#@hash.$$keys[0]`.should == 'a'
+      `#@hash.$$smap['a']`.should == 'abc'
+      `#@hash.$$smap['b'] === undefined`.should == true
+      `#@hash.$$smap['c'] === undefined`.should == true
+
+      @hash.delete 'a'
+
+      `#@hash.$$keys.length`.should == 0
+      `Object.keys(#@hash.$$map).length`.should == 0
+      `Object.keys(#@hash.$$smap).length`.should == 0
+
+      `#@hash.$$smap['a'] === undefined`.should == true
+      `#@hash.$$smap['b'] === undefined`.should == true
+      `#@hash.$$smap['c'] === undefined`.should == true
+
+      `Opal.hasOwnProperty.call(#@hash.$$map, 'hhh')`.should == false
+      `Opal.hasOwnProperty.call(#@hash.$$map, #{@obj1.hash})`.should == false
+      `Opal.hasOwnProperty.call(#@hash.$$smap, 'a')`.should == false
+      `Opal.hasOwnProperty.call(#@hash.$$smap, 'b')`.should == false
+      `Opal.hasOwnProperty.call(#@hash.$$smap, 'c')`.should == false
+    end
+  end
+end
diff --git a/spec/opal/core/hash_spec.rb b/spec/opal/core/hash_spec.rb
new file mode 100644
index 00000000..5f61bf9c
--- /dev/null
+++ b/spec/opal/core/hash_spec.rb
@@ -0,0 +1,8 @@
+describe 'Hash' do
+  it 'works with object-strings with regards to deleting' do
+    h = {`new String('a')` => 'a'}
+    k = h.keys.first
+    h.delete(k)
+    h.inspect.should == '{}'
+  end
+end
diff --git a/spec/opal/core/helpers_spec.rb b/spec/opal/core/helpers_spec.rb
new file mode 100644
index 00000000..cec75914
--- /dev/null
+++ b/spec/opal/core/helpers_spec.rb
@@ -0,0 +1,14 @@
+require 'spec_helper'
+
+describe Opal do
+  context '.instance_variable_name!' do
+    it 'does not use regular expressions on Opal level, so $` stays the same' do
+      'some string' =~ /string/
+      post_match = $`
+
+      Opal.instance_variable_name!(:@ivar_name)
+
+      expect($`).to eq(post_match)
+    end
+  end
+end
diff --git a/spec/opal/core/io/read_spec.rb b/spec/opal/core/io/read_spec.rb
new file mode 100644
index 00000000..c22ad115
--- /dev/null
+++ b/spec/opal/core/io/read_spec.rb
@@ -0,0 +1,69 @@
+require 'spec_helper'
+
+describe "IO reading methods" do
+  examples = [
+    "abc\n|def\n|ghi\n",
+    "ab|c\nd|ef\n|ghi\n",
+    "©©©\n|ŋææ\n|æπ®\n",
+    "🫃🫃🫃\n|🫃🫃🫃\n|🫃🫃🫃\n",
+    "efhasdfhasf|asdfasdfasdf|asdfasdfasdf",
+    "gsdfgsdg🫃|🫃🫃\n|🫃",
+    "a\nb\nc\nd\ne\nf",
+    "abcððefsdf🫃|s\nd",
+    "a|b|c|d|e|f|g|h|i|\n|j|k|l|\n",
+    "a b\n|c| d\n|e f",
+    "",
+    "asdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfsafsdsdf\nsadfasdf"
+  ]
+  examples += examples.map { |i| i.gsub("\n", "\r\n") }
+  examples += examples.map { |i| i.gsub("\n", "\r|\n") }
+  examples = examples.uniq
+
+  prepare_io_for = proc do |example|
+    example_lines = example.split("|")
+    io = IO.new(99)
+    io.read_proc = proc do |_length|
+      example_lines.shift
+    end
+    io
+  end
+
+  describe "#readlines" do
+    examples.each do |example|
+      it "correctly splits messages for input #{example.inspect}" do
+        io = prepare_io_for.(example)
+        expected_output = example.gsub("|", "").split(/(?<=\n)/)
+        io.readlines.should == expected_output
+      end
+    end
+  end
+
+  describe "#readline" do
+    examples.each do |example|
+      it "correctly splits messages for input #{example.inspect}" do
+        io = prepare_io_for.(example)
+        expected_output = example.gsub("|", "").split(/(?<=\n)/)
+        loop do
+          expected_output.shift.should == io.readline
+        rescue EOFError
+          expected_output.should == []
+          break
+        end
+      end
+    end
+  end
+
+  describe "#gets" do
+    examples.each do |example|
+      it "correctly splits messages for input #{example.inspect}" do
+        io = prepare_io_for.(example)
+        expected_output = example.gsub("|", "").split(/(?<=\n)/)
+        loop do
+          line = io.gets
+          expected_output.shift.should == line
+          break unless line
+        end
+      end
+    end
+  end
+end
diff --git a/spec/opal/core/iterable_props_spec.rb b/spec/opal/core/iterable_props_spec.rb
new file mode 100644
index 00000000..628342c9
--- /dev/null
+++ b/spec/opal/core/iterable_props_spec.rb
@@ -0,0 +1,53 @@
+require 'spec_helper'
+
+describe 'Iterable props defined by Opal on core JS objects' do
+  %x{
+    function iterableKeysOf(obj) {
+      var result = [];
+
+      for (var key in obj) {
+        result.push(key);
+      }
+
+      return result;
+    }
+  }
+
+  it 'is empty for numbers' do
+    `iterableKeysOf(1)`.should == []
+  end
+
+  it 'is empty for strings' do
+    `iterableKeysOf('123')`.should == ['0', '1', '2'] # indexes, in JS they are iterable by default
+    `iterableKeysOf(new String('123'))`.should == ['0', '1', '2'] # indexes, in JS they are iterable by default
+  end
+
+  it 'is empty for plain objects' do
+    `iterableKeysOf({})`.should == []
+  end
+
+  it 'is empty for boolean' do
+    `iterableKeysOf(true)`.should == []
+    `iterableKeysOf(false)`.should == []
+  end
+
+  it 'is empty for regexp' do
+    `iterableKeysOf(/regexp/)`.should == []
+  end
+
+  it 'is empty for functions' do
+    `iterableKeysOf(function() {})`.should == []
+  end
+
+  it 'is empty for dates' do
+    `iterableKeysOf(new Date())`.should == []
+  end
+
+  it 'is empty for errors' do
+    `iterableKeysOf(new Error('message'))`.should == []
+  end
+
+  it 'is empty for Math' do
+    `iterableKeysOf(Math)`.should == []
+  end
+end
diff --git a/spec/opal/core/kernel/at_exit_spec.rb b/spec/opal/core/kernel/at_exit_spec.rb
new file mode 100644
index 00000000..f46c0410
--- /dev/null
+++ b/spec/opal/core/kernel/at_exit_spec.rb
@@ -0,0 +1,70 @@
+module KernelExit
+  extend self
+  attr_accessor :status, :original_proc, :proc, :out
+
+  self.original_proc = `Opal.exit`
+  self.proc = `function(status){ #{KernelExit.status = `status`} }`
+
+  def out_after_exit
+    `Opal.exit = #{proc}`
+    exit
+    out
+  ensure
+    `Opal.exit = #{original_proc}`
+  end
+
+  def reset!
+    self.out = []
+  end
+end
+
+describe "Kernel.at_exit" do
+  before { KernelExit.reset! }
+
+  def print(n)
+    KernelExit.out << n
+  end
+
+  it "runs after all other code" do
+    Kernel.at_exit {print 5}
+    print 6
+
+    KernelExit.out_after_exit.should == [6,5]
+  end
+
+  it "runs in reverse order of registration" do
+    at_exit {print 4}
+    at_exit {print 5}
+    print 6
+    at_exit {print 7}
+
+    KernelExit.out_after_exit.should == [6,7,5,4]
+  end
+
+  it "allows calling exit inside at_exit handler" do
+    at_exit {print 3}
+    at_exit {
+      print 4
+      exit
+      # print 5 # This one is added to out because Opal.exit doesn't actually exit
+    }
+    at_exit {print 6}
+
+    KernelExit.out_after_exit.should == [6,4,3]
+  end
+
+  # INCOMPLETE: the spec implementation is tricky here
+  # it "gives access to the last raised exception" do
+  #   begin
+  #     at_exit do
+  #       print $!.message
+  #     end
+  #     raise 'foo' rescue nil
+  #     p [:err, $!]
+  #   rescue
+  #   end
+  #
+  #   KernelExit.out_after_exit.should == ['foo']
+  # end
+
+end
diff --git a/spec/opal/core/kernel/freeze_spec.rb b/spec/opal/core/kernel/freeze_spec.rb
new file mode 100644
index 00000000..1408d4ae
--- /dev/null
+++ b/spec/opal/core/kernel/freeze_spec.rb
@@ -0,0 +1,15 @@
+# No real support, just mocking
+
+describe "Kernel#freeze" do
+  it 'responds to #freeze and #frozen?' do
+    o = mock('o')
+    o.frozen?.should be_false
+    o.freeze
+    o.frozen?.should be_false
+  end
+
+  it "returns self" do
+    o = Object.new
+    o.freeze.should equal(o)
+  end
+end
diff --git a/spec/opal/core/kernel/instance_variables_spec.rb b/spec/opal/core/kernel/instance_variables_spec.rb
new file mode 100644
index 00000000..5b78119d
--- /dev/null
+++ b/spec/opal/core/kernel/instance_variables_spec.rb
@@ -0,0 +1,110 @@
+describe "Kernel#instance_variables" do
+  context 'for nil' do
+    it 'returns blank array' do
+      expect(nil.instance_variables).to eq([])
+    end
+  end
+
+  context 'for string' do
+    it 'returns blank array' do
+      expect(''.instance_variables).to eq([])
+    end
+  end
+
+  context 'for non-empty string' do
+    it 'returns blank array' do
+      expect('test'.instance_variables).to eq([])
+    end
+  end
+
+  context 'for hash' do
+    it 'returns blank array' do
+      expect({}.instance_variables).to eq([])
+    end
+
+    context 'for a hash with a default value' do
+      it 'returns a blank array' do
+        hash = Hash.new(0)
+        expect(hash.instance_variables).to eq([])
+      end
+    end
+
+    context 'for a hash with a default proc' do
+      it 'returns a blank array' do
+        hash = Hash.new { 0 }
+        expect(hash.instance_variables).to eq([])
+      end
+    end
+  end
+
+  context 'for non-empty hash' do
+    it 'returns blank array' do
+      expect({ 1 => 2 }.instance_variables).to eq([])
+    end
+  end
+
+  context 'for array' do
+    it 'returns blank array' do
+      expect([].instance_variables).to eq([])
+    end
+  end
+
+  context 'for non-empty array' do
+    it 'returns blank array' do
+      expect((1..20).to_a.instance_variables).to eq([])
+    end
+  end
+
+  context 'for object' do
+    it 'returns blank array' do
+      expect(Object.new.instance_variables).to eq([])
+    end
+  end
+
+  context 'cloned object' do
+    it 'returns same vars as source object' do
+      object = Object.new
+      expect(object.clone.instance_variables).to eq(object.instance_variables)
+    end
+  end
+
+  context 'for object with js keyword as instance variables' do
+    reserved_keywords = %w(
+      @constructor
+      @displayName
+      @__proto__
+      @__parent__
+      @__noSuchMethod__
+      @__count__
+      @hasOwnProperty
+      @valueOf
+    )
+
+    reserved_keywords.each do |ivar|
+      context "#{ivar} as instance variable name" do
+        it "returns non-escaped #{ivar} in instance_variables list" do
+          obj = Object.new
+          obj.instance_variable_set(ivar, 'value')
+
+          expect(obj.instance_variables).to eq([ivar])
+        end
+      end
+    end
+  end
+
+  context 'for a class' do
+    it 'returns blank array' do
+      expect(Class.new.instance_variables).to eq([])
+    end
+  end
+
+  context 'for a class with nested constant' do
+    class ClassWithConstantWithoutIvar
+      A = 1
+    end
+
+    it 'returns blank array' do
+      expect(ClassWithConstantWithoutIvar.instance_variables).to eq([])
+    end
+  end
+end
diff --git a/spec/opal/core/kernel/methods_spec.rb b/spec/opal/core/kernel/methods_spec.rb
new file mode 100644
index 00000000..bb178cad
--- /dev/null
+++ b/spec/opal/core/kernel/methods_spec.rb
@@ -0,0 +1,25 @@
+module MethodsSpecs
+  class Issue < Object
+    def unique_method_name
+    end
+  end
+
+  # Trigger stub generation
+  Issue.new.unique_method_name
+end
+
+describe "Kernel#methods" do
+  it "lists methods available on an object" do
+    Object.new.methods.include?("puts").should == true
+  end
+
+  it "lists only singleton methods if false is passed" do
+    o = Object.new
+    def o.foo; 123; end
+    o.methods(false).should == ["foo"]
+  end
+
+  it "ignores stub methods" do
+    Object.methods.include?(:unique_method_name).should be_false
+  end
+end
diff --git a/spec/opal/core/kernel/public_methods_spec.rb b/spec/opal/core/kernel/public_methods_spec.rb
new file mode 100644
index 00000000..bf62e072
--- /dev/null
+++ b/spec/opal/core/kernel/public_methods_spec.rb
@@ -0,0 +1,25 @@
+module PublicMethodsSpecs
+  class Parent
+    def parent_method
+    end
+  end
+
+  class Child < Parent
+    def child_method
+    end
+  end
+end
+
+describe "Kernel#public_methods" do
+  it "lists methods available on an object" do
+    child = PublicMethodsSpecs::Child.new
+    child.public_methods.include?("parent_method").should == true
+    child.public_methods.include?("child_method").should == true
+  end
+
+  it "lists only those methods in the receiver if false is passed" do
+    child = PublicMethodsSpecs::Child.new
+    def child.singular_method; 1123; end
+    child.public_methods(false).sort.should == ["child_method", "singular_method"]
+  end
+end
diff --git a/spec/opal/core/kernel/puts_spec.rb b/spec/opal/core/kernel/puts_spec.rb
new file mode 100644
index 00000000..c058d8a1
--- /dev/null
+++ b/spec/opal/core/kernel/puts_spec.rb
@@ -0,0 +1,90 @@
+describe "IO#puts" do
+  before :each do
+    @before_separator = $/
+    @io = IO.new(123)
+    ScratchPad.record []
+    def @io.write(str)
+      ScratchPad << str
+    end
+  end
+
+  after :each do
+    ScratchPad.clear
+    @io.close if @io
+    suppress_warning {$/ = @before_separator}
+  end
+
+  it "writes just a newline when given no args" do
+    @io.puts.should == nil
+    ScratchPad.recorded.join("").should == "\n"
+  end
+
+  it "writes just a newline when given just a newline" do
+    @io.puts("\n").should == nil
+    ScratchPad.recorded.should == ["\n"]
+  end
+
+  it "writes empty string with a newline when given nil as an arg" do
+    @io.puts(nil).should == nil
+    ScratchPad.recorded.join("").should == "\n"
+  end
+
+  it "writes empty string with a newline when when given nil as multiple args" do
+    @io.puts(nil, nil).should == nil
+    ScratchPad.recorded.join("").should == "\n\n"
+  end
+
+  it "calls :to_s before writing non-string objects that don't respond to :to_ary" do
+    object = mock('hola')
+    object.should_receive(:to_s).and_return("hola")
+
+    @io.puts(object).should == nil
+    ScratchPad.recorded.join("").should == "hola\n"
+  end
+
+  # it "returns general object info if :to_s does not return a string" do
+  #   object = mock('hola')
+  #   object.should_receive(:to_s).and_return(false)
+  #
+  #   @io.puts(object).should == nil
+  #   ScratchPad.recorded.join("").should == object.inspect.split(" ")[0] + ">\n"
+  # end
+
+  it "writes each arg if given several" do
+    @io.puts(1, "two", 3).should == nil
+    ScratchPad.recorded.join("").should == "1\ntwo\n3\n"
+  end
+
+  it "flattens a nested array before writing it" do
+    @io.puts([1, 2, [3]]).should == nil
+    ScratchPad.recorded.join("").should == "1\n2\n3\n"
+  end
+
+  it "writes nothing for an empty array" do
+    @io.puts([]).should == nil
+    ScratchPad.recorded.should == []
+  end
+
+  # it "writes [...] for a recursive array arg" do
+  #   x = []
+  #   x << 2 << x
+  #   @io.puts(x).should == nil
+  #   ScratchPad.recorded.join("").should == "2\n[...]\n"
+  # end
+
+  it "writes a newline after objects that do not end in newlines" do
+    @io.puts(5).should == nil
+    ScratchPad.recorded.join("").should == "5\n"
+  end
+
+  it "does not write a newline after objects that end in newlines" do
+    @io.puts("5\n").should == nil
+    ScratchPad.recorded.join("").should == "5\n"
+  end
+
+  it "ignores the $/ separator global" do
+    suppress_warning {$/ = ":"}
+    @io.puts(5).should == nil
+    ScratchPad.recorded.join("").should == "5\n"
+  end
+end
diff --git a/spec/opal/core/kernel/require_tree_spec.rb b/spec/opal/core/kernel/require_tree_spec.rb
new file mode 100644
index 00000000..68e9ead7
--- /dev/null
+++ b/spec/opal/core/kernel/require_tree_spec.rb
@@ -0,0 +1,18 @@
+describe 'Kernel.require_tree' do
+  it 'loads all the files in a directory' do
+    $ScratchPad = []
+    require_tree '../fixtures/require_tree_files'
+
+    $ScratchPad.sort.should == ['file 1.rb', 'file 2.rb', 'file 3.rb', 'file 4.rb', 'file 5.rb',
+                                'nested 1.rb', 'nested 2.rb', 'other 1.rb']
+  end
+
+  it 'can be used with "."' do
+    $ScratchPad = []
+    require_relative '../fixtures/require_tree_with_dot/index'
+
+    $ScratchPad[0].should == 'index.rb-pre'
+    $ScratchPad[1...-1].sort.should == ['file 1.rb', 'file 2.rb', 'file 3.rb']
+    $ScratchPad[-1].should == 'index.rb-post'
+  end
+end
diff --git a/spec/opal/core/kernel/respond_to_spec.rb b/spec/opal/core/kernel/respond_to_spec.rb
new file mode 100644
index 00000000..ba300e87
--- /dev/null
+++ b/spec/opal/core/kernel/respond_to_spec.rb
@@ -0,0 +1,15 @@
+class RespondToSpecs
+  def foo
+  end
+end
+
+describe "Kernel#respond_to?" do
+  before :each do
+    @a = RespondToSpecs.new
+  end
+
+  it "returns false if a method exists, but is marked with a '$$stub' property" do
+    `#{@a}.$foo.$$stub = true`
+    @a.respond_to?(:foo).should be_false
+  end
+end
diff --git a/spec/opal/core/language/DATA/characters_support_spec.rb b/spec/opal/core/language/DATA/characters_support_spec.rb
new file mode 100644
index 00000000..b4e145d6
--- /dev/null
+++ b/spec/opal/core/language/DATA/characters_support_spec.rb
@@ -0,0 +1,9 @@
+describe "characters support of the DATA contstant" do
+  it "supports all characters" do
+    DATA.read.should == "azAZ09`~!@#$%^&*(\n)_+{}\\|;:'\",<.>/?\n"
+  end
+end
+
+__END__
+azAZ09`~!@#$%^&*(
+)_+{}\|;:'",<.>/?
diff --git a/spec/opal/core/language/DATA/empty___END___spec.rb b/spec/opal/core/language/DATA/empty___END___spec.rb
new file mode 100644
index 00000000..73a57d87
--- /dev/null
+++ b/spec/opal/core/language/DATA/empty___END___spec.rb
@@ -0,0 +1,7 @@
+describe "empty __END__ section without trailing newline" do
+  it "returns an empty string" do
+    DATA.read.should == ""
+  end
+end
+
+__END__
\ No newline at end of file
diff --git a/spec/opal/core/language/DATA/multiple___END___spec.rb b/spec/opal/core/language/DATA/multiple___END___spec.rb
new file mode 100644
index 00000000..c0b8ea2b
--- /dev/null
+++ b/spec/opal/core/language/DATA/multiple___END___spec.rb
@@ -0,0 +1,10 @@
+describe "DATA constant with multiple __END__ sections" do
+  it "returns everything after first __END__" do
+    DATA.read.should == "1\n__END__\n2\n"
+  end
+end
+
+__END__
+1
+__END__
+2
diff --git a/spec/opal/core/language/arguments/mlhs_arg_spec.rb b/spec/opal/core/language/arguments/mlhs_arg_spec.rb
new file mode 100644
index 00000000..f4e0238e
--- /dev/null
+++ b/spec/opal/core/language/arguments/mlhs_arg_spec.rb
@@ -0,0 +1,18 @@
+describe 'mlhs argument' do
+  context 'when pased value is falsey in JS' do
+    it 'still returns it' do
+      p = ->((a)){ a }
+      p.call(false).should == false
+      p.call("").should == ""
+      p.call(0).should == 0
+    end
+  end
+
+  context 'when passed value == null' do
+    it 'replaces it with nil' do
+      p = ->((a)){ a }
+      p.call([`undefined`]).should == nil
+      p.call([`null`]).should == nil
+    end
+  end
+end
diff --git a/spec/opal/core/language/forward_args_spec.rb b/spec/opal/core/language/forward_args_spec.rb
new file mode 100644
index 00000000..f406584b
--- /dev/null
+++ b/spec/opal/core/language/forward_args_spec.rb
@@ -0,0 +1,53 @@
+describe "Forward arguments" do
+  it "forwards args, kwargs and blocks" do
+    def fwd_t1_pass1(...)
+      fwd_t1_pass2(...)
+    end
+
+    def fwd_t1_pass2(*args, **kwargs, &block)
+      [args.count, kwargs.count, block_given?]
+    end
+
+    fwd_t1_pass1(1, 2, 3, a: 1, b: 2).should == [3, 2, false]
+    fwd_t1_pass1(1, 2, &:itself).should == [2, 0, true]
+    fwd_t1_pass1(a: 1, b: 2).should == [0, 2, false]
+  end
+
+  it "supports forwarding with initial arguments (3.0 behavior)" do
+    def fwd_t2_pass1(initial, ...)
+      fwd_t2_pass2(0, initial + 1, ...)
+    end
+
+    def fwd_t2_pass2(a, b, c)
+      a + b + c
+    end
+
+    fwd_t2_pass1(2, 3).should == 6
+    error = nil
+    begin
+      fwd_t2_pass1(2, 3, 4) # Too many arguments passwd to fwd_t2_pass2
+    rescue ArgumentError
+      error = :ArgumentError
+    end
+    error.should == :ArgumentError
+  end
+
+  it "supports forwarding to multiple methods at once" do
+    def fwd_t3_pass1(...)
+      fwd_t3_pass2a(...) + fwd_t3_pass2b(...) + fwd_t3_pass2c(...)
+    end
+
+    def fwd_t3_pass2a(*args)
+      -2 * args.count
+    end
+    def fwd_t3_pass2b(*args)
+      1 * args.count
+    end
+    def fwd_t3_pass2c(*args)
+      0 * args.count
+    end
+
+    fwd_t3_pass1(0, 0, 0).should == -3
+    fwd_t3_pass1(0, 0).should == -2
+  end
+end
diff --git a/spec/opal/core/language/infinite_range_spec.rb b/spec/opal/core/language/infinite_range_spec.rb
new file mode 100644
index 00000000..9f7817de
--- /dev/null
+++ b/spec/opal/core/language/infinite_range_spec.rb
@@ -0,0 +1,13 @@
+describe "Infinite ranges" do
+  it "supports endless ranges" do
+    range = (10..)
+    range.begin.should == 10
+    range.end.should == nil
+  end
+
+  it "supports beginless ranges" do
+    range = (..10)
+    range.begin.should == nil
+    range.end.should == 10
+  end
+end
diff --git a/spec/opal/core/language/keyword_arguments_spec.rb b/spec/opal/core/language/keyword_arguments_spec.rb
new file mode 100644
index 00000000..a388918a
--- /dev/null
+++ b/spec/opal/core/language/keyword_arguments_spec.rb
@@ -0,0 +1,9 @@
+describe "Keyword arguments" do
+  it 'works with keys that are reserved words in JS' do
+    o = Object.new
+    def o.foo(default:)
+      default
+    end
+    o.foo(default: :bar).should == :bar
+  end
+end
diff --git a/spec/opal/core/language/memoization_spec.rb b/spec/opal/core/language/memoization_spec.rb
new file mode 100644
index 00000000..f8fc9233
--- /dev/null
+++ b/spec/opal/core/language/memoization_spec.rb
@@ -0,0 +1,16 @@
+describe "memoization" do
+  it "memoizes a value with complex internal logic" do
+    klass = Class.new do
+      def memoized_value(dependency: nil)
+        @memoized_value ||= begin
+                              return nil if dependency.nil?
+
+                              dependency.call
+                            end
+      end
+    end
+
+    expect(klass.new.memoized_value(dependency: proc { :value })).to eq :value
+    expect(klass.new.memoized_value).to eq nil
+  end
+end
diff --git a/spec/opal/core/language/numblocks_spec.rb b/spec/opal/core/language/numblocks_spec.rb
new file mode 100644
index 00000000..454f439c
--- /dev/null
+++ b/spec/opal/core/language/numblocks_spec.rb
@@ -0,0 +1,16 @@
+require 'spec_helper'
+
+describe "numblocks" do
+  it "supports numblocks" do
+    [1,2,3].map { _1 * 2 }.should == [2,4,6]
+    [[1,2],[3,4]].map { _1 * _2 }.should == [2,12]
+  end
+
+  it "reports correct arity" do
+    proc { [_1, _2] + [_3] }.arity.should == 3
+  end
+
+  it "reports correct parameters" do
+    proc { [_1, _2] }.parameters.should == [[:opt, :_1], [:opt, :_2]]
+  end
+end
diff --git a/spec/opal/core/language/pattern_matching_spec.rb b/spec/opal/core/language/pattern_matching_spec.rb
new file mode 100644
index 00000000..a1e50370
--- /dev/null
+++ b/spec/opal/core/language/pattern_matching_spec.rb
@@ -0,0 +1,124 @@
+require 'spec_helper'
+
+describe "pattern matching" do
+  it "supports basic assignment" do
+    5 => a
+    a.should == 5
+  end
+
+  it "supports array pattern" do
+    [1,2,3,4] => [1,2,*rest]
+    rest.should == [3,4]
+    [1,2,3,4] => [*rest,3,x]
+    rest.should == [1,2]
+    x.should == 4
+  end
+
+  it "supports hash pattern" do
+    {a: 4} => {a:}
+    a.should == 4
+    {a: 4, b: 6} => {b:}
+    b.should == 6
+    {a: 1, b: 2, c: 3} => {a: 1, **rest}
+    rest.should == {b: 2, c: 3}
+  end
+
+  it "supports pinning" do
+    a = 6
+    6 => ^a
+    a.should == 6
+  end
+
+  it "supports a lambda literal" do
+    [6, 7] => [->(a) { a == 6 }, b]
+    b.should == 7
+  end
+
+  it "supports constants" do
+    [6, 7, 8] => [Integer, a, Integer]
+    a.should == 7
+  end
+
+  it "supports regexps" do
+    "test" => /e(s)t/
+    $1.should == 's'
+  end
+
+  it "supports save pattern" do
+    [6, 7, 8] => [Integer=>a, Integer=>b, Integer=>c]
+    [a,b,c].should == [6, 7, 8]
+  end
+
+  it "supports find pattern with save" do
+    [1, 2, 3, 4, 5] => [*before, 3 => three, 4 => four, *after]
+    before.should == [1,2]
+    three.should == 3
+    four.should == 4
+    after.should == [5]
+  end
+
+  it "supports custom classes" do
+    class TotallyArrayOrHashLike
+      def deconstruct
+        [1,2,3]
+      end
+
+      def deconstruct_keys(_)
+        {a: 1, b: 2}
+      end
+    end
+
+    TotallyArrayOrHashLike.new => TotallyArrayOrHashLike[*array]
+    array.should == [1,2,3]
+
+    TotallyArrayOrHashLike.new => TotallyArrayOrHashLike(**hash)
+    hash.should == {a: 1, b: 2}
+  end
+
+  it "supports case expressions" do
+    case 4
+    in 4
+      z = true
+    in 5
+      z = false
+    end
+
+    z.should == true
+  end
+
+  it "supports case expressions with guards" do
+    case 4
+    in 4 if false
+      z = true
+    in 4 if true
+      z = false
+    end
+
+    z.should == false
+  end
+
+  it "raises if case expression is unmatched" do
+    proc do
+      case 4
+      in 5
+        :test
+      end
+    end.should raise_error NoMatchingPatternError
+  end
+
+  it "doesn't raise when else in a case expression is present" do
+    case 4
+    in 5
+      z = true
+    else
+      z = false
+    end
+
+    z.should == false
+  end
+
+  it "doesn't raise or set variables if an in expression is unmatched" do
+    4 in String => a
+    a.should == nil
+  end
+end
diff --git a/spec/opal/core/language/safe_navigator_spec.rb b/spec/opal/core/language/safe_navigator_spec.rb
new file mode 100644
index 00000000..5647f74f
--- /dev/null
+++ b/spec/opal/core/language/safe_navigator_spec.rb
@@ -0,0 +1,7 @@
+describe 'Safe navigator' do
+  it "handles also null and undefined" do
+    [`null`, `undefined`].each do |value|
+      value&.unknown.should == nil
+    end
+  end
+end
diff --git a/spec/opal/core/language/super_spec.rb b/spec/opal/core/language/super_spec.rb
new file mode 100644
index 00000000..42df4f4a
--- /dev/null
+++ b/spec/opal/core/language/super_spec.rb
@@ -0,0 +1,21 @@
+describe 'super without explicit argument' do
+  it 'passes arguments named with js reserved word' do
+    parent = Class.new do
+      def test_args(*args) = args
+      def test_rest_args(*args) = args
+      def test_kwargs(**args) = args
+      def test_rest_kwargs(**args) = args
+    end
+    klass = Class.new(parent) do
+      def test_args(native) = super
+      def test_rest_args(*native) = super
+      def test_kwargs(native:) = super
+      def test_rest_kwargs(**native) = super
+    end
+
+    klass.new.test_args(1).should == [1]
+    klass.new.test_rest_args(2).should == [2]
+    klass.new.test_kwargs(native: 3).should == {native: 3}
+    klass.new.test_rest_kwargs(native: 4).should == {native: 4}
+  end
+end
diff --git a/spec/opal/core/language/while_spec.rb b/spec/opal/core/language/while_spec.rb
new file mode 100644
index 00000000..238db413
--- /dev/null
+++ b/spec/opal/core/language/while_spec.rb
@@ -0,0 +1,31 @@
+describe "The while expression" do
+  it "restarts the current iteration without reevaluating condition with redo" do
+    a = []
+    i = 0
+    j = 0
+    while (i+=1)<3
+      a << i
+      j+=1
+      redo if j<3
+      a << 5
+    end
+    a.should == [1, 1, 1, 5, 2, 5]
+  end
+
+  it "restarts the current iteration without evaluation the code below redo" do
+    a = []
+    i = 0
+    while true
+      i += 1
+      a << i
+      if i < 3
+        redo
+      else
+        break
+      end
+      a << 5 # should never get here
+    end
+    a.should == [1, 2, 3]
+  end
+
+end
diff --git a/spec/opal/core/language/xstring_spec.rb b/spec/opal/core/language/xstring_spec.rb
new file mode 100644
index 00000000..819d137d
--- /dev/null
+++ b/spec/opal/core/language/xstring_spec.rb
@@ -0,0 +1,13 @@
+describe "The x-string expression" do
+  it "works with multiline, case and assignment" do
+    a = case 1
+        when 1
+          %x{
+            var b = 5;
+            return b;
+          }
+        end
+    
+    a.should == 5
+  end
+end
diff --git a/spec/opal/core/language_spec.rb b/spec/opal/core/language_spec.rb
new file mode 100644
index 00000000..d65ebc28
--- /dev/null
+++ b/spec/opal/core/language_spec.rb
@@ -0,0 +1,43 @@
+require 'spec_helper'
+
+describe "generated method names" do
+  it "does not conflict with local Ruby variables" do
+    Class.new {
+      value = 123
+      def value
+        456
+      end
+      value.should == 123
+    }
+  end
+
+  it "does not conflict with local JS variables" do
+    Class.new {
+      `var value = 123;`
+      def value
+        456
+      end
+      `value`.should == 123
+    }
+  end
+end
+
+describe "Bridging" do
+  it "does not remove singleton methods of bridged classes" do
+    `typeof(String.call)`.should == "function"
+  end
+end
+
+describe "Constants" do
+  it "doesn't raise error when a JS falsey constant is referenced" do
+    z = Class.new {
+      C1 = 0
+      C2 = nil
+      C3 = false
+      C4 = ''
+      C5 = C3
+    }
+
+    [z::C1, z::C2, z::C3, z::C4, z::C5].should == [0, nil, false, '', false]
+  end
+end
diff --git a/spec/opal/core/marshal/dump_spec.rb b/spec/opal/core/marshal/dump_spec.rb
new file mode 100644
index 00000000..f5146722
--- /dev/null
+++ b/spec/opal/core/marshal/dump_spec.rb
@@ -0,0 +1,81 @@
+# encoding: binary
+
+require 'spec_helper'
+
+module MarshalExtension
+end
+
+class MarshalUserRegexp < Regexp
+end
+
+class UserMarshal
+  attr_reader :data
+
+  def initialize
+    @data = 'stuff'
+  end
+  def marshal_dump() 'data' end
+  def marshal_load(data) @data = data end
+  def ==(other) self.class === other and @data == other.data end
+end
+
+describe 'Marshal.dump' do
+  it 'dumps non-empty Array' do
+    expect(Marshal.dump(['a', 1, 2])).to eq("\u0004\b[\b\"\u0006ai\u0006i\a")
+  end
+
+  it 'dumps case-sensitive regexp' do
+    expect(Marshal.dump(/\w+/)).to eq("\u0004\b/\b\\w+\u0000")
+  end
+
+  it 'dumps case-insensitive regexp' do
+    expect(Marshal.dump(/\w+/i)).to eq("\u0004\b/\b\\w+\u0001")
+  end
+
+  it "dumps a Float" do
+    Marshal.dump(123.4567).should == "\004\bf\r123.4567"
+    Marshal.dump(-0.841).should == "\x04\bf\v-0.841"
+    Marshal.dump(9876.345).should == "\004\bf\r9876.345"
+    Marshal.dump(Float::INFINITY).should == "\004\bf\binf"
+    Marshal.dump(-Float::INFINITY).should == "\004\bf\t-inf"
+    Marshal.dump(Float::NAN).should == "\004\bf\bnan"
+  end
+
+  it "dumps a Integer" do
+    Marshal.dump(0).should == "\x04\bi\x00"
+    Marshal.dump(123).should == "\x04\bi\x01{"
+    Marshal.dump(-123).should == "\x04\bi\x80"
+    Marshal.dump(1234567890).should == "\x04\bl+\a\xD2\x02\x96I"
+    Marshal.dump(-1234567890).should == "\x04\bl-\a\xD2\x02\x96I"
+  end
+
+  it "dumps a Regexp with flags" do
+    Marshal.dump(/\w/im).should == "\x04\b/\a\\w\u0005"
+  end
+
+  it 'dumps an extended Regexp' do
+    Marshal.dump(/\w/.extend(MarshalExtension)).should == "\x04\be:\u0015MarshalExtension/\a\\w\u0000"
+  end
+
+  it 'dumps object#marshal_dump when object responds to #marshal_dump' do
+    Marshal.dump(UserMarshal.new).should == "\u0004\bU:\u0010UserMarshal\"\tdata"
+  end
+
+  it 'saves a link to an object before processing its instance variables' do
+    top = Object.new
+    ref = Object.new
+    a = Object.new
+    b = Object.new
+    c = Object.new
+
+    top.instance_variable_set(:@a, a)
+    top.instance_variable_set(:@b, b)
+    top.instance_variable_set(:@a, c)
+    top.instance_variable_set(:@ref, ref)
+
+    expected = "\u0004\b[\ao:\vObject\b:\a@ao:\vObject\u0000:\a@bo:\vObject\u0000:\t@refo:\vObject\u0000@\t"
+    Marshal.dump([top, ref]).should == expected
+    loaded = Marshal.load(expected)
+    loaded[0].instance_variable_get(:@ref).object_id.should == loaded[1].object_id
+  end
+end
diff --git a/spec/opal/core/marshal/load_spec.rb b/spec/opal/core/marshal/load_spec.rb
new file mode 100644
index 00000000..cae27603
--- /dev/null
+++ b/spec/opal/core/marshal/load_spec.rb
@@ -0,0 +1,13 @@
+describe "Marshal.load" do
+  it 'loads array with instance variable' do
+    a = Marshal.load("\x04\bI[\bi\x06i\ai\b\x06:\n@ivari\x01{")
+    a.should == [1, 2, 3]
+    a.instance_variable_get(:@ivar).should == 123
+  end
+
+  it 'loads a hash with a default value (hash_def)' do
+    hash = Marshal.load("\x04\b}\x06i\x06i\a:\bdef")
+    hash.should == { 1 => 2 }
+    hash.default.should == :def
+  end
+end
diff --git a/spec/opal/core/module_spec.rb b/spec/opal/core/module_spec.rb
new file mode 100644
index 00000000..fff61494
--- /dev/null
+++ b/spec/opal/core/module_spec.rb
@@ -0,0 +1,63 @@
+module ModuleSubclassIncludedSpec
+  class Module1 < ::Module
+    def included(_descendant)
+      $ScratchPad << 'A included'
+    end
+  end
+
+  class Module2 < Module1
+    def included(_descendant)
+      $ScratchPad << 'B included'
+    end
+  end
+  M0 = Module.new
+  M1 = Module1.new
+  M2 = Module2.new
+end
+
+module ModuleCVarSpec
+  module Mod0
+    def cvar0; @@cvar; end
+    def cvarx0; @@cvarx ||= 5; end
+    def cvary0; @@cvary; 0; end
+    def cvarz0; @@cvarz = @@cvarz || 5; end
+  end
+
+  module Mod1
+    include Mod0
+    @@cvar = 10
+    def cvar1; @@cvar; end
+    def cvar1=(new); @@cvar=new; end
+  end
+
+  module Mod2
+    include Mod1
+    def cvar2; @@cvar; end
+    def cvar2=(new); @@cvar=new; end
+  end
+end
+
+describe 'Module' do
+  it '#included gets called in subclasses (regression for https://github.com/opal/opal/issues/1900)' do
+    $ScratchPad = []
+    klass = Class.new
+    klass.include ::ModuleSubclassIncludedSpec::M0
+    klass.include ::ModuleSubclassIncludedSpec::M1
+    klass.include ::ModuleSubclassIncludedSpec::M2
+    $ScratchPad.should == ['A included', 'B included']
+  end
+
+  it "can access ancestor's @@cvar" do
+    klass = Class.new
+    klass.include ::ModuleCVarSpec::Mod2
+    klass.new.cvar1.should == 10
+    klass.new.cvar2.should == 10
+    klass.new.cvar2 = 50
+    klass.new.cvar1.should == 50
+    klass.new.cvar2.should == 50
+    klass.new.cvarx0.should == 5
+    klass.new.cvary0.should == 0
+    ->{ klass.new.cvarz0 }.should raise_error NameError
+    ->{ klass.new.cvar0 }.should raise_error NameError
+  end
+end
diff --git a/spec/opal/core/number/to_i_spec.rb b/spec/opal/core/number/to_i_spec.rb
new file mode 100644
index 00000000..afe16e15
--- /dev/null
+++ b/spec/opal/core/number/to_i_spec.rb
@@ -0,0 +1,28 @@
+require 'spec_helper'
+
+describe 'Number#to_i' do
+  it "should not change huge number" do
+    1504642339053716000000.to_i.should == 1504642339053716000000
+  end
+
+  it "should not change negative huge number" do
+    -1504642339053716000000.to_i.should == -1504642339053716000000
+  end
+
+  it "equals Number#truncate(0) with huge number" do
+    1504642339053716000000.to_i.should == 1504642339053716000000.truncate(0)
+  end
+
+  it "should not change Infinity" do
+    `Infinity`.to_i.should == `Infinity`
+  end
+
+  it "should not change -Infinity" do
+    `-Infinity`.to_i.should == `-Infinity`
+  end
+
+  it "should not change NaN" do
+    x = `NaN`.to_i
+    `Number.isNaN(x)`.should be_true
+  end
+end
diff --git a/spec/opal/core/number/to_s_spec.rb b/spec/opal/core/number/to_s_spec.rb
new file mode 100644
index 00000000..f89a9c43
--- /dev/null
+++ b/spec/opal/core/number/to_s_spec.rb
@@ -0,0 +1,11 @@
+require 'spec_helper'
+
+describe 'Number#to_s' do
+  it "should convert 0.0 to '0.0'" do
+    0.0.to_s.should == '0'
+  end
+
+  it "should convert -0.0 to '-0.0'" do
+    -0.0.to_s.should == '-0.0'
+  end
+end
diff --git a/spec/opal/core/object_id_spec.rb b/spec/opal/core/object_id_spec.rb
new file mode 100644
index 00000000..e0ee867f
--- /dev/null
+++ b/spec/opal/core/object_id_spec.rb
@@ -0,0 +1,56 @@
+require 'spec_helper'
+
+describe "Opal.uid()" do
+  it "returns even sequential numbers in increments of 2" do
+    %x{
+      var id0 = Opal.uid(),
+          id1 = Opal.uid(),
+          id2 = Opal.uid(),
+          id3 = Opal.uid(),
+          id4 = Opal.uid();
+    }
+
+    modulo = `id0` % 2
+    modulo.should == 0
+
+    `id1`.should == `id0` + 2
+    `id2`.should == `id0` + 4
+    `id3`.should == `id0` + 6
+    `id4`.should == `id0` + 8
+  end
+end
+
+describe "FalseClass#object_id" do
+  it "returns 0" do
+    false.object_id.should == 0
+  end
+end
+
+describe "TrueClass#object_id" do
+  it "returns 2" do
+    true.object_id.should == 2
+  end
+end
+
+describe "NilClass#object_id" do
+  it "returns 4" do
+    nil.object_id.should == 4
+  end
+end
+
+describe "Numeric#object_id" do
+  it "returns (self * 2) + 1" do
+    0.object_id.should == 1
+    1.object_id.should == 3
+    2.object_id.should == 5
+    420.object_id.should == 841
+    -2.object_id.should == -3
+    -1.object_id.should == -1
+  end
+end
+
+describe "String#object_id" do
+  it "returns the primitive string version of self" do
+    `#{"hello".object_id} === "hello".toString()`.should be_true
+  end
+end
diff --git a/spec/opal/core/regexp/assertions_spec.rb b/spec/opal/core/regexp/assertions_spec.rb
new file mode 100644
index 00000000..aaf8a0ba
--- /dev/null
+++ b/spec/opal/core/regexp/assertions_spec.rb
@@ -0,0 +1,19 @@
+describe 'Regexp assertions' do
+  it 'matches the beginning of input' do
+    /\Atext/.should =~ 'text'
+    /\Atext/.should_not =~ 'the text'
+
+    regexp = Regexp.new('\Atext')
+    regexp.should =~ 'text'
+    regexp.should_not =~ 'the text'
+  end
+
+  it 'matches the end of input' do
+    /text\z/.should =~ 'the text'
+    /text\z/.should_not =~ 'text of'
+
+    regexp = Regexp.new('text\z')
+    regexp.should =~ 'the text'
+    regexp.should_not =~ 'text of'
+  end
+end
diff --git a/spec/opal/core/regexp/interpolation_spec.rb b/spec/opal/core/regexp/interpolation_spec.rb
new file mode 100644
index 00000000..6c833e9d
--- /dev/null
+++ b/spec/opal/core/regexp/interpolation_spec.rb
@@ -0,0 +1,40 @@
+describe 'Regexp interpolation' do
+  it 'can interpolate other regexps' do
+    a = /a/
+
+    /#{a}/.should =~ 'aaa'
+    /a+/.should =~ 'aaa'
+    /#{a}+/.should =~ 'aaa'
+    /aa/.should =~ 'aaa'
+    /#{a}a/.should =~ 'aaa'
+  end
+
+  it 'can interpolate objects' do
+    a = Object.new
+    def a.to_s; 'a'; end
+
+    /#{a}/.should =~ 'aaa'
+    /a+/.should =~ 'aaa'
+    /#{a}+/.should =~ 'aaa'
+    /aa/.should =~ 'aaa'
+    /#{a}a/.should =~ 'aaa'
+  end
+
+  it 'can interpolate strings' do
+    a = 'a'
+
+    /#{a}/.should =~ 'aaa'
+    /a+/.should =~ 'aaa'
+    /#{a}+/.should =~ 'aaa'
+    /aa/.should =~ 'aaa'
+    /#{a}a/.should =~ 'aaa'
+  end
+
+  it 'can interpolate string literals' do
+    /#{'a'}/.should =~ 'aaa'
+    /a+/.should =~ 'aaa'
+    /#{'a'}+/.should =~ 'aaa'
+    /aa/.should =~ 'aaa'
+    /#{'a'}a/.should =~ 'aaa'
+  end
+end
diff --git a/spec/opal/core/regexp/match_spec.rb b/spec/opal/core/regexp/match_spec.rb
new file mode 100644
index 00000000..f67593fa
--- /dev/null
+++ b/spec/opal/core/regexp/match_spec.rb
@@ -0,0 +1,78 @@
+describe 'Regexp#match' do
+  describe 'when pos is not specified' do
+    it 'calls .exec only once on the current object' do
+      regexp = /test/
+      calls = 0
+      %x(
+        regexp._exec = regexp.exec;
+        regexp.exec = function(str) {
+          var match = this._exec(str);
+          calls++;
+          return match;
+        }
+      )
+      result = regexp.match('test test')
+      calls.should == 1
+      result.begin(0).should == 0
+      result[0].should == 'test'
+    end
+  end
+
+  describe 'when pos is specified' do
+    it 'does not call .exec on the current object' do
+      regexp = /test/
+      calls = 0
+      %x(
+        regexp._exec = regexp.exec;
+        regexp.exec = function(str) {
+          var match = this._exec(str);
+          calls++;
+          return match;
+        }
+      )
+      result = regexp.match('test test', 1)
+      calls.should == 0
+      result[0].should == 'test'
+      result.begin(0).should == 5
+    end
+  end
+end
+
+describe 'Regexp#match?' do
+  describe 'when pos is not specified' do
+    it 'calls .test on the current object' do
+      regexp = /test/
+      calls = 0
+      %x(
+        regexp._test = regexp.test;
+        regexp.test = function(str) {
+          var verdict = this._test(str);
+          calls++;
+          return verdict;
+        }
+      )
+      result = regexp.match?('test test')
+      calls.should == 1
+      result.should == true
+    end
+  end
+
+  describe 'when pos is specified' do
+    it 'does not call .test on the current object' do
+      regexp = /test/
+      calls = 0
+      %x(
+        regexp._test = regexp.test;
+        regexp.test = function(str) {
+          var verdict = this._test(str);
+          calls++;
+          return verdict;
+        }
+      )
+      result = regexp.match?('test test', 1)
+      calls.should == 0
+      # FIXME pos is not yet supported by Opal's Regexp#match?
+      #result.should == true
+    end
+  end
+end
diff --git a/spec/opal/core/runtime/bridged_classes_spec.rb b/spec/opal/core/runtime/bridged_classes_spec.rb
new file mode 100644
index 00000000..3fae2b0d
--- /dev/null
+++ b/spec/opal/core/runtime/bridged_classes_spec.rb
@@ -0,0 +1,139 @@
+require 'spec_helper'
+
+%x{
+  var bridge_class_demo = function(){};
+  bridge_class_demo.prototype.$foo = function() { return "bar" };
+}
+class TopBridgedClassDemo < `bridge_class_demo`
+  def some_bridged_method
+    [1, 2, 3]
+  end
+
+  def method_missing(name, *args, &block)
+    return :catched if name == :catched_by_method_missing
+    super
+  end
+end
+
+describe "Bridged Classes" do
+  describe "Passing native constructor to class keyword" do
+    before do
+      @bridged = ::TopBridgedClassDemo
+      @instance = `new bridge_class_demo()`
+    end
+
+    it "should expose the given class at the top level scope" do
+      @bridged.should be_kind_of(Class)
+    end
+
+    it "gives the class the correct name" do
+      @bridged.name.should == "TopBridgedClassDemo"
+    end
+
+    it "should have all BasicObject methods defined" do
+      @instance.should respond_to(:instance_eval)
+      @bridged.new.should respond_to(:==)
+    end
+
+    it "should have all Object methods defined" do
+      @instance.should respond_to(:class)
+      @bridged.new.should respond_to(:singleton_class)
+    end
+
+    it "instances of class should be able to call native ruby methods" do
+      @instance.foo.should == "bar"
+      @bridged.new.foo.should == "bar"
+    end
+
+    it "allows new methods to be defined on the bridged prototype" do
+      @instance.some_bridged_method.should == [1, 2, 3]
+      @bridged.new.some_bridged_method.should == [1, 2, 3]
+    end
+  end
+
+  describe ".instance_methdods" do
+    it "should report methods for class" do
+      Array.instance_methods(false).should include(:shift)
+    end
+
+    it "should not include methods donated from Object/Kernel" do
+      Array.instance_methods(false).should_not include(:class)
+    end
+
+    it "should not include methods donated from BasicObject" do
+      Array.instance_methods(false).should_not include(:__send__)
+      Array.instance_methods(false).should_not include(:send)
+    end
+  end
+
+  describe '#method_missing' do
+    it 'works' do
+      lambda { @instance.not_catched_by_method_missing }.should raise_error(NoMethodError)
+      @instance.catched_by_method_missing.should == :catched
+    end
+  end
+end
+
+class ModularizedBridgeClass
+  def something
+    'different module'
+  end
+end
+
+%x{
+  var bridge_class_demo_module = function(){};
+  bridge_class_demo_module.prototype.$foo = function() { return "foobar" };
+}
+
+module BridgeModule
+  class ModularizedBridgeClass < `bridge_class_demo_module`
+    def some_bridged_method
+      [4, 5, 6]
+    end
+  end
+end
+
+describe 'Bridged classes in different modules' do
+  before do
+    @bridged = BridgeModule::ModularizedBridgeClass
+    @instance = `new bridge_class_demo_module()`
+  end
+
+  it "should expose the given class not at the top level scope" do
+    @bridged.should be_kind_of(Class)
+  end
+
+  it 'should not disturb an existing class at the top level scope' do
+    ModularizedBridgeClass.new.something.should == 'different module'
+  end
+
+  it "gives the class the correct name" do
+    @bridged.name.should == "BridgeModule::ModularizedBridgeClass"
+  end
+
+  it "instances of class should be able to call native ruby methods" do
+    @instance.foo.should == "foobar"
+    @bridged.new.foo.should == "foobar"
+  end
+
+  it "allows new methods to be defined on the bridged prototype" do
+    @instance.some_bridged_method.should == [4, 5, 6]
+    @bridged.new.some_bridged_method.should == [4, 5, 6]
+  end
+end
+
+
+describe "Invalid bridged classes" do
+  it "raises a TypeError when trying to extend with non-Class" do
+    error_msg = /superclass must be a Class/
+    -> { class TestClass < `""`;                  end }.should raise_error(TypeError, error_msg)
+    -> { class TestClass < `3`;                   end }.should raise_error(TypeError, error_msg)
+    -> { class TestClass < `true`;                end }.should raise_error(TypeError, error_msg)
+    -> { class TestClass < `Math`;                end }.should raise_error(TypeError, error_msg)
+    -> { class TestClass < `Object.create({})`;   end }.should raise_error(TypeError, error_msg)
+    -> { class TestClass < `Object.create(null)`; end }.should raise_error(TypeError, error_msg)
+    -> { class TestClass < Module.new;            end }.should raise_error(TypeError, error_msg)
+    -> { class TestClass < BasicObject.new;       end }.should raise_error(TypeError, error_msg)
+  end
+end
+
diff --git a/spec/opal/core/runtime/constants_spec.rb b/spec/opal/core/runtime/constants_spec.rb
new file mode 100644
index 00000000..bdea8440
--- /dev/null
+++ b/spec/opal/core/runtime/constants_spec.rb
@@ -0,0 +1,35 @@
+module RuntimeFixtures
+  class A
+  end
+
+  class A::B
+    module C
+    end
+  end
+
+  module ModuleB
+  end
+
+  module ModuleA
+    include ModuleB
+  end
+end
+
+describe "Constants access via .$$ with dots (regression for #1418)" do
+  it "allows to acces scopes on `Opal`" do
+    `Opal.Object.$$.RuntimeFixtures.$$.A.$$.B.$$.C`.should == RuntimeFixtures::A::B::C
+  end
+end
+
+describe "Inclusion of modules" do
+  it "that have been included by other modules works" do
+    # here ClassC would have failed to be created due to a bug in Opal.append_features
+    module RuntimeFixtures
+      class ClassC
+        include ModuleA
+        include ModuleB
+      end
+    end
+    RuntimeFixtures::ClassC.new.class.should == RuntimeFixtures::ClassC
+  end
+end
diff --git a/spec/opal/core/runtime/eval_spec.rb b/spec/opal/core/runtime/eval_spec.rb
new file mode 100644
index 00000000..8c4d9928
--- /dev/null
+++ b/spec/opal/core/runtime/eval_spec.rb
@@ -0,0 +1,5 @@
+describe "Opal.eval()" do
+  it "evaluates ruby code by compiling it to javascript and running" do
+    `Opal['eval']("'foo'.class")`.should == String
+  end
+end
diff --git a/spec/opal/core/runtime/exit_spec.rb b/spec/opal/core/runtime/exit_spec.rb
new file mode 100644
index 00000000..92fe2467
--- /dev/null
+++ b/spec/opal/core/runtime/exit_spec.rb
@@ -0,0 +1,29 @@
+describe "Exit (Kernel#exit / Opal.exit())" do
+  it "forwards the status code to Opal.exit(status)" do
+    received_status { Kernel.exit }.should == 0
+
+    received_status { Kernel.exit(0) }.should == 0
+    received_status { Kernel.exit(1) }.should == 1
+    received_status { Kernel.exit(2) }.should == 2
+    received_status { Kernel.exit(123) }.should == 123
+
+    received_status { Kernel.exit(true) }.should == 0
+    received_status { Kernel.exit(false) }.should == 1
+
+    lambda { received_status { Kernel.exit(Object.new) } }.should raise_error(TypeError)
+    lambda { received_status { Kernel.exit([]) } }.should raise_error(TypeError)
+    lambda { received_status { Kernel.exit(/123/) } }.should raise_error(TypeError)
+  end
+
+  def received_status
+    received_status = nil
+    original_exit = `Opal.exit`
+    begin
+      `Opal.exit = function(status) { #{received_status = `status`} }`
+      yield
+    ensure
+      `Opal.exit = #{original_exit}`
+    end
+    received_status
+  end
+end
diff --git a/spec/opal/core/runtime/is_a_spec.rb b/spec/opal/core/runtime/is_a_spec.rb
new file mode 100644
index 00000000..6219bef1
--- /dev/null
+++ b/spec/opal/core/runtime/is_a_spec.rb
@@ -0,0 +1,48 @@
+describe 'Opal.is_a' do
+  describe 'Numeric/Number special cases' do
+    [
+      [1, :Numeric, true],
+      [1, :Number, true],
+      [1, :Fixnum, true],
+      [1, :Integer, true],
+      [1, :Float, true],
+
+      [1.2, :Numeric, true],
+      [1.2, :Number, true],
+      [1.2, :Fixnum, true],
+      [1.2, :Integer, false],
+      [1.2, :Float, true],
+
+      [Numeric.new, :Numeric, true],
+      [Numeric.new, :Number, false],
+      [Numeric.new, :Fixnum, false],
+      [Numeric.new, :Integer, false],
+      [Numeric.new, :Float, false],
+    ].each do |(value, klass_name, result)|
+      klass = Object.const_get(klass_name)
+      it "returns #{result} for Opal.is_a(#{value}, #{klass_name})" do
+        `Opal.is_a(#{value}, #{klass})`.should == result
+      end
+    end
+
+    it 'can rely on Number subclasses having $$is_number_class on their prototype' do
+      `!!#{Numeric}.$$is_number_class`.should == false
+      `!!#{Number}.$$is_number_class`.should == true
+      `!!#{Fixnum}.$$is_number_class`.should == true
+      `!!#{Integer}.$$is_number_class`.should == true
+      `!!#{Float}.$$is_number_class`.should == true
+    end
+
+    it 'can rely on Number subclasses having $$is_integer_class on their prototype' do
+      `!!#{Numeric}.$$is_integer_class`.should == false
+      `!!#{Number}.$$is_integer_class`.should == false
+      `!!#{Fixnum}.$$is_integer_class`.should == false
+      `!!#{Integer}.$$is_integer_class`.should == true
+      `!!#{Float}.$$is_integer_class`.should == false
+    end
+
+    it 'works for non-Opal objects' do
+      `Opal.is_a({}, Opal.Array)`.should == false
+    end
+  end
+end
diff --git a/spec/opal/core/runtime/loaded_spec.rb b/spec/opal/core/runtime/loaded_spec.rb
new file mode 100644
index 00000000..8c94559d
--- /dev/null
+++ b/spec/opal/core/runtime/loaded_spec.rb
@@ -0,0 +1,20 @@
+describe 'Opal.loaded' do
+  before do
+    %w[foo bar baz].each do |module_name|
+      `delete Opal.require_table[#{module_name}]`
+      `Opal.loaded_features.splice(Opal.loaded_features.indexOf(#{module_name}))`
+    end
+  end
+
+  it 'it works with multiple paths' do
+    `Opal.loaded(['bar'])`
+    `(Opal.require_table.foo == null)`.should == true
+    `(Opal.require_table.bar === true)`.should == true
+    `(Opal.require_table.baz == null)`.should == true
+
+    `Opal.loaded(['foo', 'bar', 'baz'])`
+    `(Opal.require_table.foo === true)`.should == true
+    `(Opal.require_table.bar === true)`.should == true
+    `(Opal.require_table.baz === true)`.should == true
+  end
+end
diff --git a/spec/opal/core/runtime/main_methods_spec.rb b/spec/opal/core/runtime/main_methods_spec.rb
new file mode 100644
index 00000000..fbc1d649
--- /dev/null
+++ b/spec/opal/core/runtime/main_methods_spec.rb
@@ -0,0 +1,39 @@
+require 'spec_helper'
+
+$OPAL_TOP_LEVEL_OBJECT = self
+
+def self.some_main_method
+  3.142
+end
+
+def some_top_level_method_is_defined
+  42
+end
+
+define_method :some_other_main_method do
+  0.1618
+end
+
+describe "Defining normal methods at the top level" do
+  it "should define them on Object, not main" do
+    $OPAL_TOP_LEVEL_OBJECT.some_top_level_method_is_defined.should == 42
+    Object.new.some_top_level_method_is_defined.should == 42
+  end
+end
+
+describe "Defining singleton methods on main" do
+  it "should define it on main directly" do
+    $OPAL_TOP_LEVEL_OBJECT.some_main_method.should == 3.142
+  end
+
+  it "should not define the method for all Objects" do
+    lambda { Object.new.some_main_method }.should raise_error(NoMethodError)
+  end
+end
+
+describe "Defining methods on main with define_method" do
+  it "should define it on main directly" do
+    $OPAL_TOP_LEVEL_OBJECT.some_other_main_method.should == 0.1618
+    Object.new.some_other_main_method.should == 0.1618
+  end
+end
diff --git a/spec/opal/core/runtime/method_missing_spec.rb b/spec/opal/core/runtime/method_missing_spec.rb
new file mode 100644
index 00000000..52310585
--- /dev/null
+++ b/spec/opal/core/runtime/method_missing_spec.rb
@@ -0,0 +1,68 @@
+require "spec_helper"
+
+module MethodMissingSpecs
+  class A
+    def method_missing(mid, *args)
+      [mid, args]
+    end
+  end
+
+  class B
+    def method_missing(mid, *args, &block)
+      [mid, block]
+    end
+  end
+end
+
+class BridgedClass < `(function NativeConstructor(){})`
+end
+
+describe "method_missing" do
+  before do
+    @obj = MethodMissingSpecs::A.new
+  end
+
+  it "should pass the missing method name as first argument" do
+    @obj.foo.should == [:foo, []]
+  end
+
+  it "should correctly pass arguments to method_missing" do
+    @obj.bar(1, 2, 3).should == [:bar, [1, 2, 3]]
+  end
+
+  it "calls method missing for operators" do
+    obj = Object.new
+    obj.should_receive(:method_missing).with(:+, 123).and_return(42)
+    (obj + 123).should == 42
+  end
+
+  it "should pass blocks to method_missing" do
+    obj = MethodMissingSpecs::B.new
+    proc = proc { 1 }
+    obj.baz(1, 2, &proc).should == [:baz, proc]
+  end
+end
+
+describe "BasicObject#method_missing" do
+  it "raises an error for the missing method" do
+    lambda {
+      BasicObject.new.foo_bar_baz
+    }.should raise_error(Exception)
+  end
+end
+
+describe "Array#method_missing" do
+  it "raises an error for the missing method" do
+    lambda {
+      BasicObject.new.foo_bar_baz
+    }.should raise_error(Exception)
+  end
+end
+
+describe "<BridgedClass>#method_missing" do
+  it "raises an error for the missing method" do
+    lambda {
+      BridgedClass.new.foo_bar_baz
+    }.should raise_error(Exception)
+  end
+end
diff --git a/spec/opal/core/runtime/rescue_spec.rb b/spec/opal/core/runtime/rescue_spec.rb
new file mode 100644
index 00000000..87d9dc4e
--- /dev/null
+++ b/spec/opal/core/runtime/rescue_spec.rb
@@ -0,0 +1,37 @@
+describe "The rescue keyword" do
+  context 'JS::Error' do
+    it 'handles raw js throws' do
+      begin
+        `throw { message: 'foo' }`
+        nil
+      rescue JS::Error => e
+        e.JS[:message]
+      end.should == 'foo'
+    end
+
+    it 'handles other Opal error' do
+      begin
+        raise 'bar'
+      rescue JS::Error => e
+        e.message
+      end.should == 'bar'
+    end
+
+    it 'can be combined with other classes to catch js errors' do
+      begin
+        `throw { message: 'baz' }`
+        nil
+      rescue JS::Error, RuntimeError => e
+        e.JS[:message]
+      end.should == 'baz'
+    end
+
+    it 'can be combined with other classes to catch Opal errors' do
+      begin
+        raise 'quux'
+      rescue JS::Error, RuntimeError => e
+        e.message
+      end.should == 'quux'
+    end
+  end
+end
diff --git a/spec/opal/core/runtime/string_spec.rb b/spec/opal/core/runtime/string_spec.rb
new file mode 100644
index 00000000..ede28641
--- /dev/null
+++ b/spec/opal/core/runtime/string_spec.rb
@@ -0,0 +1,25 @@
+require 'spec_helper'
+
+describe "Runtime String helpers" do
+  context 'Opal.enc' do
+    it 'sets the encoding boxing literal strings' do
+      -> {
+        `Opal.enc("foo", 'UTF-8')`
+      }.should_not raise_error
+    end
+  end
+
+  context 'Opal.set_encoding' do
+    it 'sets the encoding for boxed strings' do
+      expect(`Opal.set_encoding(new String("foo"), 'UTF-8')`.encoding).to eq(Encoding::UTF_8)
+      expect(`Opal.set_encoding("foo".$dup(), 'UTF-8')`.encoding).to eq(Encoding::UTF_8)
+      expect(`Opal.set_encoding("foo".$clone(), 'UTF-8')`.encoding).to eq(Encoding::UTF_8)
+    end
+
+    it 'raises FrozenError when provided a literal' do
+      -> {
+        `Opal.set_encoding("foo", 'UTF-8')`
+      }.should raise_error(FrozenError)
+    end
+  end
+end
diff --git a/spec/opal/core/runtime/truthy_spec.rb b/spec/opal/core/runtime/truthy_spec.rb
new file mode 100644
index 00000000..0d5133ad
--- /dev/null
+++ b/spec/opal/core/runtime/truthy_spec.rb
@@ -0,0 +1,61 @@
+class Boolean
+  def self_as_an_object
+    self
+  end
+end
+
+class JsNil
+  def <(other)
+    `nil`
+  end
+end
+
+describe "Opal truthyness" do
+  it "should evaluate to true using js `true` as an object" do
+    if true.self_as_an_object
+      called = true
+    end
+
+    called.should be_true
+  end
+
+  it "should evaluate to false using js `false` as an object" do
+    if false.self_as_an_object
+      called = true
+    end
+
+    called.should be_nil
+  end
+
+  it "should evaluate to false if js `nil` is used with an operator" do
+    is_falsey = JsNil.new < 2 ? false : true
+
+    is_falsey.should be_true
+  end
+
+  it "should consider false, nil, null, and undefined as not truthy" do
+    called = nil
+    [`false`, `nil`, `null`, `undefined`].each do |v|
+      if v
+        called = true
+      end
+    end
+
+    called.should be_nil
+  end
+
+  it "should true as truthy" do
+    if `true`
+      called = true
+    end
+
+    called.should be_true
+  end
+
+  it "should handle logic operators correctly for false, nil, null, and undefined" do
+    (`false` || `nil` || `null` || `undefined` || 1).should == 1
+    [`false`, `nil`, `null`, `undefined`].each do |v|
+      `#{1 && v} === #{v}`.should == true
+    end
+  end
+end
diff --git a/spec/opal/core/runtime_spec.rb b/spec/opal/core/runtime_spec.rb
new file mode 100644
index 00000000..71c247b2
--- /dev/null
+++ b/spec/opal/core/runtime_spec.rb
@@ -0,0 +1,58 @@
+require 'spec_helper'
+
+describe '`Opal.hash`' do
+  it 'converts object literals to hashes' do
+    `Opal.hash({a: 1, b: 2})`.should == {a: 1, b: 2}
+  end
+end
+
+describe 'javascript access using .JS' do
+  it 'should call javascript methods via .JS.method()' do
+    "a1234b5678c".JS.indexOf('c').should == 10
+    "a1234b5678c".JS.replace(`/[0-9]/g`, '').should == 'abc'
+  end
+
+  it 'should call javascript methods via .JS.method arg' do
+    ("a1234b5678c".JS.indexOf 'c').should == 10
+    ("a1234b5678c".JS.replace `/[0-9]/g`, '').should == 'abc'
+  end
+
+  it 'should call javascript methods with blocks via .JS.method' do
+    f = `{a:function(f){return f(1) + f(2)}}`
+    f.JS.a{|v| v*2}.should == 6
+    v = f.JS.a do |v| v*2 end
+    v.should == 6
+  end
+
+  it 'should call javascript methods with args and blocks via .JS.method' do
+    f = `{a:function(a, f){return f(a, 1) + f(a, 2)}}`
+    f.JS.a(3){|b, v| b+v*2}.should == 12
+    v = f.JS.a 3 do |b, v| b+v*2 end
+    v.should == 12
+  end
+
+  it 'should support javascript properties via .JS[]' do
+    "a1234b5678c".JS['length'].should == 11
+    `{a:1}`.JS['a'].should == 1
+    `{a:1}`.JS['a'].should == 1
+    [2, 4].JS[0].should == 2
+    [2, 4].JS[1].should == 4
+    [2, 4].JS[:length].should == 2
+  end
+
+  it 'should be chainable' do
+    "a1234b5678c".JS.replace(`/[0-9]/g`, '').JS.toUpperCase.should == 'ABC'
+    "a1234b5678c".JS.replace(`/[0-9]/g`, '').JS[:length].should == 3
+    "a1234b5678c".JS[:length].JS.toString.should == "11"
+    `{a:{b:1}}`.JS[:a].JS[:b].JS.toString.should == '1'
+    f = `{a:function(f){return {b: function(f2){return f(f2(1)) + f(f2(2))}}}}`
+    f.JS.a{|v| v*2}.JS.b{|v| v*3}.should == 18
+  end
+
+  it 'should set javascript properties via .JS[arg] = rhs' do
+    a = `{}`
+    a.JS[:foo] = 1
+    a.JS[:foo].should == 1
+    `a["foo"]`.should == 1
+  end
+end
diff --git a/spec/opal/core/string/each_byte_spec.rb b/spec/opal/core/string/each_byte_spec.rb
new file mode 100644
index 00000000..58dab661
--- /dev/null
+++ b/spec/opal/core/string/each_byte_spec.rb
@@ -0,0 +1,19 @@
+require 'spec_helper'
+
+describe "String#each_byte" do
+  it "get bytes from UTF-8 character (2 bytes)" do
+    a = []
+    "ʆ".each_byte { |c| a << c }
+    a.should == [202, 134]
+  end
+  it "get bytes from UTF-8 character (3 bytes)" do
+    a = []
+    "ቜ".each_byte { |c| a << c }
+    a.should == [225, 137, 156]
+  end
+  it "get bytes from UTF-8 emoji (4 bytes)" do
+    a = []
+    "👋".each_byte { |c| a << c }
+    a.should == [240, 159, 145, 139]
+  end
+end
diff --git a/spec/opal/core/string/gsub_spec.rb b/spec/opal/core/string/gsub_spec.rb
new file mode 100644
index 00000000..0a64f7ae
--- /dev/null
+++ b/spec/opal/core/string/gsub_spec.rb
@@ -0,0 +1,43 @@
+require 'spec_helper'
+
+describe 'String' do
+  describe '#gsub' do
+    it 'handles recursive gsub' do
+      pass_slot_rx = /{(\d+)}/
+      recurse_gsub = -> text {
+        text.gsub(pass_slot_rx) {
+          index = $1.to_i
+          if index == 0
+            recurse_gsub.call '{1}'
+          else
+            'value'
+          end
+        }
+      }
+      result = recurse_gsub.call '<code>{0}</code>'
+      result.should == '<code>value</code>'
+    end
+
+    it 'works well with zero-length matches' do
+      expect("test".gsub(/^/, '2')).to eq "2test"
+      expect("test".gsub(/$/, '2')).to eq "test2"
+      expect("test".gsub(/\b/, '2')).to eq "2test2"
+    end
+
+    it "doesn't override $~ when it's inspected" do
+      'a:b'.gsub(/([a-z]):([a-z])/) do
+        $~.inspect
+        target, content = $1, $2
+        expect([target, content]).to eq(['a', 'b'])
+      end
+    end
+  end
+
+  describe '#sub' do
+    it 'works well with zero-length matches' do
+      expect("test".sub(/^/, '2')).to eq "2test"
+      expect("test".sub(/$/, '2')).to eq "test2"
+      expect("test".sub(/\b/, '2')).to eq "2test"
+    end
+  end
+end
diff --git a/spec/opal/core/string/scan_spec.rb b/spec/opal/core/string/scan_spec.rb
new file mode 100644
index 00000000..2bf4c61e
--- /dev/null
+++ b/spec/opal/core/string/scan_spec.rb
@@ -0,0 +1,8 @@
+describe 'String#scan' do
+  it 'supports block argument destructuring' do
+    foo = []
+    "/foo/:bar".scan(/:(\w+)/) { |name,| foo << name }
+
+    foo.should == ["bar"]
+  end
+end
diff --git a/spec/opal/core/string/subclassing_spec.rb b/spec/opal/core/string/subclassing_spec.rb
new file mode 100644
index 00000000..92c564f6
--- /dev/null
+++ b/spec/opal/core/string/subclassing_spec.rb
@@ -0,0 +1,16 @@
+require 'spec_helper'
+
+class MyStringSubclass < String
+  attr_reader :v
+  def initialize(s, v)
+    super(s)
+    @v = v
+  end
+end
+
+describe "String subclassing" do
+  it "should call initialize for subclasses" do
+    c = MyStringSubclass.new('s', 5)
+    [c, c.v].should == ['s', 5]
+  end
+end
diff --git a/spec/opal/core/string/to_sym_spec.rb b/spec/opal/core/string/to_sym_spec.rb
new file mode 100644
index 00000000..29f06db5
--- /dev/null
+++ b/spec/opal/core/string/to_sym_spec.rb
@@ -0,0 +1,9 @@
+require 'spec_helper'
+
+describe 'String#to_sym' do
+  it 'returns a string literal' do
+    str = "string"
+    sym = str.to_sym
+    `typeof(sym)`.should == 'string'
+  end
+end
diff --git a/spec/opal/core/string/unpack_spec.rb b/spec/opal/core/string/unpack_spec.rb
new file mode 100644
index 00000000..eacf5137
--- /dev/null
+++ b/spec/opal/core/string/unpack_spec.rb
@@ -0,0 +1,22 @@
+require 'spec_helper'
+
+describe 'String#unpack' do
+  it 'correctly unpacks with U* strings with latin-1 characters' do
+    'café'.unpack('U*').should == [99, 97, 102, 233]
+    [99, 97, 102, 233].pack('U*').unpack('U*').should == [99, 97, 102, 233]
+  end
+
+  it 'correctly unpacks with U* strings with latin-2 characters' do
+    'pół'.unpack('U*').should == [112, 243, 322]
+    [112, 243, 322].pack('U*').unpack('U*').should == [112, 243, 322]
+  end
+
+  it 'correctly unpacks with c* strings with latin-2 characters' do
+    'ść'.unpack('c*').should == [-59, -101, -60, -121]
+  end
+
+  it 'correctly unpacks with s* binary strings' do
+    "\xc8\x01".unpack('s*').should == [456]
+    [678].pack('s').unpack('s').should == [678]
+  end
+end
diff --git a/spec/opal/core/string_spec.rb b/spec/opal/core/string_spec.rb
new file mode 100644
index 00000000..5bf93633
--- /dev/null
+++ b/spec/opal/core/string_spec.rb
@@ -0,0 +1,28 @@
+require 'spec_helper'
+
+describe 'Encoding' do
+  it 'supports US-ASCII' do
+    "è".encoding.name.should == 'UTF-8'
+    "è".force_encoding('ASCII').should == "\xC3\xA8"
+    "è".force_encoding('ascii').should == "\xC3\xA8"
+    "è".force_encoding('US-ASCII').should == "\xC3\xA8"
+    "è".force_encoding('us-ascii').should == "\xC3\xA8"
+    "è".force_encoding('ASCII-8BIT').should == "\xC3\xA8"
+    "è".force_encoding('ascii-8bit').should == "\xC3\xA8"
+    "è".force_encoding('BINARY').should == "\xC3\xA8"
+    "è".force_encoding('binary').should == "\xC3\xA8"
+  end
+
+  describe '.find' do
+    it 'finds the encoding regardless of the case' do
+      Encoding.find('ASCII').should == Encoding::ASCII
+      Encoding.find('ascii').should == Encoding::ASCII
+      Encoding.find('US-ASCII').should == Encoding::ASCII
+      Encoding.find('us-ascii').should == Encoding::ASCII
+      Encoding.find('ASCII-8BIT').should == Encoding::BINARY
+      Encoding.find('ascii-8bit').should == Encoding::BINARY
+      Encoding.find('BINARY').should == Encoding::BINARY
+      Encoding.find('binary').should == Encoding::BINARY
+    end
+  end
+end
diff --git a/spec/opal/core/struct/dup_spec.rb b/spec/opal/core/struct/dup_spec.rb
new file mode 100644
index 00000000..695b0e96
--- /dev/null
+++ b/spec/opal/core/struct/dup_spec.rb
@@ -0,0 +1,11 @@
+describe "Struct#dup" do
+  it "should return another struct instance" do
+    klass = Struct.new("Klass", :foo)
+    a = klass.new(1)
+    b = a.dup
+    b.foo = 2
+
+    a.foo.should == 1
+    b.foo.should == 2
+  end
+end
diff --git a/spec/opal/core/time_spec.rb b/spec/opal/core/time_spec.rb
new file mode 100644
index 00000000..84b6b962
--- /dev/null
+++ b/spec/opal/core/time_spec.rb
@@ -0,0 +1,68 @@
+require 'spec_helper'
+require 'time'
+
+# rubyspec does not have specs for these listed methods
+describe Time do
+  describe '<=>' do
+    it 'returns -1 when self is less than other' do
+      (Time.new(2015, 1, 1) <=> Time.new(2015, 1, 2)).should == -1
+    end
+
+    it 'returns 0 when self is equal to other' do
+      (Time.new(2015, 1, 1) <=> Time.new(2015, 1, 1)).should == 0
+    end
+
+    it 'returns 1 when self is greater than other' do
+      (Time.new(2015, 1, 2) <=> Time.new(2015, 1, 1)).should == 1
+    end
+
+    it 'returns nil when compared to non-Time objects' do
+      (Time.new <=> nil).should == nil
+    end
+  end
+
+  describe "#==" do
+    it "returns true if self is equal to other date" do
+      (Time.new(2013, 9, 13) == Time.new(2013, 9, 13)).should == true
+    end
+
+    it "returns false if self is not equal to other date" do
+      (Time.new(2013, 10, 2) == Time.new(2013, 10, 11)).should == false
+    end
+
+    it 'returns false when compared to non-Time objects' do
+      (Time.new == nil).should == false
+      (Time.new == Object.new).should == false
+    end
+  end
+
+  describe '#zone' do
+    context 'with different TZs on Tue Jun 20 20:50:08 UTC 2017' do
+      it 'zone is +12' do
+        time = Time.now
+
+        # export TZ="/usr/share/zoneinfo/Pacific/Fiji"; node -e 'console.log(new Date().toString())'
+        time.JS[:toString] = -> { 'Wed Jun 21 2017 08:42:01 GMT+1200 (+12)' }
+        time.zone.should == '+12'
+
+        # export TZ="/usr/share/zoneinfo/Europe/Rome"; node -e 'console.log(new Date().toString())'
+        time.JS[:toString] = -> { 'Tue Jun 20 2017 22:52:57 GMT+0200 (CEST)' }
+        time.zone.should == 'CEST'
+
+        # export TZ="/usr/share/zoneinfo/Europe/Rome"; node -e 'console.log(new Date().toString())'
+        time.JS[:toString] = -> { 'Tue Jun 20 2017 23:56:54 GMT+0300 (MSK)' }
+        time.zone.should == 'MSK'
+
+        # https://github.com/opal/opal/issues/403
+        time.JS[:toString] = -> { 'Wed May 07 2014 11:59:05 GMT+0300 (Финляндия (лето))' }
+        time.zone.should == 'Финляндия (лето)'
+      end
+    end
+  end
+
+  describe '#utc_offset' do
+    it 'returns 0 if the date is UTC' do
+      Time.new.utc.utc_offset.should == 0
+    end
+  end
+end
diff --git a/spec/opal/stdlib/erb/erb_spec.rb b/spec/opal/stdlib/erb/erb_spec.rb
new file mode 100644
index 00000000..56919027
--- /dev/null
+++ b/spec/opal/stdlib/erb/erb_spec.rb
@@ -0,0 +1,30 @@
+require 'erb'
+require File.expand_path('../simple', __FILE__)
+require File.expand_path('../quoted', __FILE__)
+require File.expand_path('../inline_block', __FILE__)
+
+describe "ERB files" do
+  before :each do
+    @simple = Template['opal/stdlib/erb/simple']
+    @quoted = Template['opal/stdlib/erb/quoted']
+    @inline_block = Template['opal/stdlib/erb/inline_block']
+  end
+
+  it "should be defined by their filename on Template namespace" do
+    @simple.should be_kind_of(Template)
+  end
+
+  it "calling the block with a context should render the block" do
+    @some_data = "hello"
+    @simple.render(self).should == "<div>hello</div>\n"
+  end
+
+  it "should accept quotes in strings" do
+    @name = "adam"
+    @quoted.render(self).should == "<div class=\"foo\">hello there adam</div>\n"
+  end
+
+  it "should be able to handle inline blocks" do
+    @inline_block.should be_kind_of(Template)
+  end
+end
diff --git a/spec/opal/stdlib/erb/inline_block.opalerb b/spec/opal/stdlib/erb/inline_block.opalerb
new file mode 100644
index 00000000..a91d7f93
--- /dev/null
+++ b/spec/opal/stdlib/erb/inline_block.opalerb
@@ -0,0 +1,3 @@
+<%= some_helper do %>
+  <h1>Hi there</h1>
+<% end %>
diff --git a/spec/opal/stdlib/erb/quoted.opalerb b/spec/opal/stdlib/erb/quoted.opalerb
new file mode 100644
index 00000000..2dbc8427
--- /dev/null
+++ b/spec/opal/stdlib/erb/quoted.opalerb
@@ -0,0 +1 @@
+<div class="foo">hello <%= "there" + " #{@name}" %></div>
diff --git a/spec/opal/stdlib/erb/simple.opalerb b/spec/opal/stdlib/erb/simple.opalerb
new file mode 100644
index 00000000..ec3656dc
--- /dev/null
+++ b/spec/opal/stdlib/erb/simple.opalerb
@@ -0,0 +1 @@
+<div><%= @some_data %></div>
diff --git a/spec/opal/stdlib/js_spec.rb b/spec/opal/stdlib/js_spec.rb
new file mode 100644
index 00000000..4167b1c6
--- /dev/null
+++ b/spec/opal/stdlib/js_spec.rb
@@ -0,0 +1,72 @@
+require 'spec_helper'
+require 'js'
+
+describe 'javascript operations using JS module' do
+  it 'JS.typeof uses typeof to return underlying javascript type' do
+    [1, `null`, `undefined`, Object.new, [], ""].each do |v|
+      JS.typeof(v).should == `typeof #{v}`
+    end
+  end
+
+  it 'JS.new uses new to create new instance' do
+    f = `function(){}`
+    f.JS[:prototype].JS[:color] = 'black'
+    JS.new(f).JS[:color].should == 'black'
+  end
+
+  it 'JS.new handles blocks' do
+    f = `function(a){this.a = a}`
+    JS.new(f){1}.JS.a.should == 1
+  end
+
+  it 'JS.instanceof uses instanceof to check if value is an instance of a function' do
+    f = `function(){}`
+    JS.instanceof(JS.new(f), f).should == true
+    JS.instanceof(JS.new(f), `function(){}`).should == false
+  end
+
+  it 'JS.delete uses delete to remove properties from objects' do
+    f = `{a:1}`
+    f.JS[:a].should == 1
+    JS.delete(f, :a)
+    `#{f.JS[:a]} === undefined`.should == true
+  end
+
+  it 'JS.in uses in to check for properties in objects' do
+    f = `{a:1}`
+    JS.in(:a, f).should == true
+    JS.in(:b, f).should == false
+  end
+
+  it 'JS.void returns undefined' do
+    f = 1
+    `#{JS.void(f += 1)} === undefined`.should == true
+    f.should == 2
+  end
+
+  it 'JS.call calls global javascript methods' do
+    JS.call(:parseFloat, '1.0').should == 1
+    JS.call(:parseInt, '1').should == 1
+    JS.call(:eval, "({a:1})").JS[:a].should == 1
+  end
+
+  it 'JS.method_missing calls global javascript methods' do
+    JS.parseFloat('1.0').should == 1
+    JS.parseInt('1').should == 1
+  end
+
+  it 'JS.call calls global javascript methods with blocks' do
+    begin
+      JS.global.JS[:_test_global_function] = lambda{|pr| pr.call + 1}
+      JS._test_global_function{1}.should == 2
+    ensure
+      JS.delete(JS.global, :_test_global_function)
+    end
+  end
+
+  it 'JS.<METHOD> supports complex method calls' do
+    obj = `{ foo: function(){return "foo"} }`
+    args = [1,2,3]
+    obj.JS.foo(*args).should == :foo
+  end
+end
diff --git a/spec/opal/stdlib/json/ext_spec.rb b/spec/opal/stdlib/json/ext_spec.rb
new file mode 100644
index 00000000..afd6b601
--- /dev/null
+++ b/spec/opal/stdlib/json/ext_spec.rb
@@ -0,0 +1,55 @@
+require 'json'
+
+describe "Hash#to_json" do
+  it "returns a string of all key and value pairs" do
+    {}.to_json.should == "{}"
+    {"a" => 1, "b" => 2}.to_json.should == '{"a":1,"b":2}'
+
+    hash = {"a" => 1, "b" => false, "c" => nil, "d" => true}
+    JSON.parse(hash.to_json).should == hash
+  end
+end
+
+describe "Array#to_json" do
+  it "returns a string of all array elements converted to json" do
+    [].to_json.should == "[]"
+    [1, 2, 3].to_json.should == "[1,2,3]"
+    [true, nil, false, "3", 42].to_json.should == '[true,null,false,"3",42]'
+  end
+end
+
+describe "Boolean#to_json" do
+  it "returns 'true' when true" do
+    true.to_json.should == "true"
+  end
+
+  it "returns 'false' when false" do
+    false.to_json.should == "false"
+  end
+end
+
+describe "Kernel#to_json" do
+  it "returns an escaped #to_s of the receiver" do
+    self.to_json.should be_kind_of(String)
+  end
+end
+
+describe "NilClass#to_json" do
+  it "returns 'null'" do
+    nil.to_json.should == "null"
+  end
+end
+
+describe "String#to_json" do
+  it "returns an escaped string" do
+    "foo".to_json.should == "\"foo\""
+    "bar\nbaz".to_json.should == "\"bar\\nbaz\""
+  end
+end
+
+describe "Numeric#to_json" do
+  it "returns a string representing the number" do
+    42.to_json.should == "42"
+    3.142.to_json.should == "3.142"
+  end
+end
diff --git a/spec/opal/stdlib/json/parse_spec.rb b/spec/opal/stdlib/json/parse_spec.rb
new file mode 100644
index 00000000..621d8bab
--- /dev/null
+++ b/spec/opal/stdlib/json/parse_spec.rb
@@ -0,0 +1,37 @@
+require 'json'
+
+describe "JSON.parse" do
+  it "parses null into nil" do
+    JSON.parse("null").should be_nil
+  end
+
+  it "parses true into true" do
+    JSON.parse("true").should be_true
+  end
+
+  it "parses false into false" do
+    JSON.parse("false").should be_false
+  end
+
+  it "parses numbers into numbers" do
+    JSON.parse("42").should == 42
+    JSON.parse("3.142").should == 3.142
+  end
+
+  it "parses arrays into ruby arrays" do
+    JSON.parse("[]").should == []
+    JSON.parse("[1, 2, 3]").should == [1, 2, 3]
+    JSON.parse("[[1, 2, 3], [4, 5]]").should == [[1, 2, 3], [4, 5]]
+    JSON.parse("[null, true, false]").should == [nil, true, false]
+  end
+
+  it "parses object literals into ruby hashes" do
+    JSON.parse("{}").should == {}
+    JSON.parse('{"a": "b"}').should == {"a" => "b"}
+    JSON.parse('{"a": null, "b": 10, "c": [true, false]}').should == {"a" => nil, "b" => 10, "c" => [true, false]}
+  end
+
+  it "raises ParserError for invalid JSON" do
+    lambda { JSON.parse("invalid_json") }.should raise_error(JSON::ParserError)
+  end
+end
diff --git a/spec/opal/stdlib/logger/logger_spec.rb b/spec/opal/stdlib/logger/logger_spec.rb
new file mode 100644
index 00000000..dfb3207c
--- /dev/null
+++ b/spec/opal/stdlib/logger/logger_spec.rb
@@ -0,0 +1,317 @@
+require 'logger'
+require 'stringio'
+
+# Our implementation of Logger only supports StringIO pipes.
+# Since we can't portably write a log file, nothing in rubyspec will run.
+describe Logger do
+  before do
+    @pipe = StringIO.new
+    @logger = Logger.new @pipe
+  end
+
+  describe "level" do
+    it "should set the level to DEBUG by default" do
+      @logger.level.should == Logger::Severity::DEBUG
+    end
+
+    it "should allow the level to be changed using an integer of a known level" do
+      @logger.level = Logger::Severity::INFO
+      @logger.level.should == Logger::Severity::INFO
+    end
+
+    it "should allow the level to be changed to an arbitrary integer value" do
+      @logger.level = 1000
+      @logger.level.should == 1000
+    end
+
+    it "should allow the level to be set using a case-insensitive level name" do
+      @logger.level = 'WaRn'
+      @logger.level.should == Logger::Severity::WARN
+    end
+
+    it "should raise an ArgumentError if the level is set to an unknown name" do
+      lambda { @logger.level = 'foobar' }.should raise_error(ArgumentError)
+    end
+
+    it "should report when debug level is enabled" do
+      @logger.debug?.should == true
+    end
+
+    it "should report when debug level is not enabled" do
+      @logger.level = Logger::Severity::DEBUG + 1
+      @logger.debug?.should == false
+    end
+
+    it "should report when info level is enabled" do
+      @logger.level = Logger::Severity::INFO
+      @logger.info?.should == true
+    end
+
+    it "should report when debug level is not enabled" do
+      @logger.level = Logger::Severity::INFO + 1
+      @logger.info?.should == false
+    end
+
+    it "should report when warn level is enabled" do
+      @logger.level = Logger::Severity::WARN
+      @logger.warn?.should == true
+    end
+
+    it "should report when warn level is not enabled" do
+      @logger.level = Logger::Severity::WARN + 1
+      @logger.warn?.should == false
+    end
+
+    it "should report when error level is enabled" do
+      @logger.level = Logger::Severity::ERROR
+      @logger.error?.should == true
+    end
+
+    it "should report when error level is not enabled" do
+      @logger.level = Logger::Severity::ERROR + 1
+      @logger.error?.should == false
+    end
+
+    it "should report when fatal level is enabled" do
+      @logger.level = Logger::Severity::FATAL
+      @logger.fatal?.should == true
+    end
+
+    it "should report when fatal level is not enabled" do
+      @logger.level = Logger::Severity::FATAL + 1
+      @logger.fatal?.should == false
+    end
+  end
+
+  describe "add" do
+    it "should not add a message to the log output if level is not enabled" do
+      @logger.level = Logger::Severity::INFO
+      @logger.add(Logger::Severity::DEBUG, 'message').should == true
+      @pipe.string.should == ''
+    end
+
+    it "should add a message to the log output if level is enabled" do
+      @logger.add(Logger::Severity::DEBUG, 'message').should == true
+      @pipe.string.should_not == ''
+    end
+
+    it "should coerce severity to UNKNOWN if falsy" do
+      @logger.level = Logger::Severity::UNKNOWN
+      @logger.add(nil, 'message').should == true
+      @pipe.string.should_not == ''
+    end
+
+    it "should format message using default formatter" do
+      @logger.add(Logger::Severity::DEBUG, 'message', 'program').should == true
+      @pipe.string.should =~ /^D, \[.+?\] +DEBUG -- program: message\n/
+    end
+
+    it "should log debug message if debug level is enabled" do
+      @logger.debug('message').should == true
+      @pipe.string.should =~ /^D, .*: message\n/
+    end
+
+    it "should not log debug message if debug level is not enabled" do
+      @logger.level = Logger::Severity::DEBUG + 1
+      @logger.debug('message').should == true
+      @pipe.string.should == ''
+    end
+
+    it "should log info message if info level is enabled" do
+      @logger.level = Logger::Severity::INFO
+      @logger.info('message').should == true
+      @pipe.string.should =~ /^I, .*: message\n/
+    end
+
+    it "should not log info message if info level is not enabled" do
+      @logger.level = Logger::Severity::INFO + 1
+      @logger.info('message').should == true
+      @pipe.string.should == ''
+    end
+
+    it "should log error message if info level is enabled" do
+      @logger.level = Logger::Severity::ERROR
+      @logger.error('message').should == true
+      @pipe.string.should =~ /^E, .*: message\n/
+    end
+
+    it "should not log error message if error level is not enabled" do
+      @logger.level = Logger::Severity::ERROR + 1
+      @logger.error('message').should == true
+      @pipe.string.should == ''
+    end
+
+    it "should log fatal message if fatal level is enabled" do
+      @logger.level = Logger::Severity::FATAL
+      @logger.fatal('message').should == true
+      @pipe.string.should =~ /^F, .*: message\n/
+    end
+
+    it "should not log fatal message if fatal level is not enabled" do
+      @logger.level = Logger::Severity::FATAL + 1
+      @logger.fatal('message').should == true
+      @pipe.string.should == ''
+    end
+
+    it "should log unknown message if unknown level is enabled" do
+      @logger.level = Logger::Severity::UNKNOWN
+      @logger.unknown('message').should == true
+      @pipe.string.should =~ /^U, .*: message\n/
+    end
+
+    it "should not log unknown message if unknown level is not enabled" do
+      @logger.level = Logger::Severity::UNKNOWN + 1
+      @logger.unknown('message').should == true
+      @pipe.string.should == ''
+    end
+
+    it "should use level name ANY in message if level is not known" do
+      @logger.add(1000, 'message', 'program').should == true
+      @pipe.string.should =~ /^A, \[.+?\] +ANY -- program: message\n/
+    end
+
+    it "should use message from block passed to add if block is given" do
+      @logger.add(Logger::Severity::DEBUG, nil, 'program') { 'message' }.should == true
+      @pipe.string.should include(' -- program: message')
+    end
+
+    it "should only require severity argument when calling add" do
+      @logger.add(Logger::Severity::DEBUG).should == true
+      @pipe.string.should include('DEBUG -- : nil')
+    end
+
+    it "should not require any arguments when calling level method" do
+      @logger.debug.should == true
+      @pipe.string.should include('DEBUG -- : nil')
+    end
+  end
+
+  describe "progname" do
+    it "should set progname to nil by default" do
+      @logger.progname.should be_nil
+    end
+
+    it "should leave progname blank in message by default" do
+      @logger.add(Logger::Severity::DEBUG, 'message').should == true
+      @pipe.string.should include(' DEBUG -- : message')
+    end
+
+    it "should allow the progname to be set" do
+      @logger.progname = 'program'
+      @logger.progname.should == 'program'
+    end
+
+    it "should use the progname from the logger in the message" do
+      @logger.progname = 'program'
+      @logger.add(Logger::Severity::DEBUG, 'message').should == true
+      @pipe.string.should include(' DEBUG -- program: message')
+    end
+
+    it "should allow the progname to be overridden when using add to log a message" do
+      @logger.progname = 'program'
+      @logger.add(Logger::Severity::DEBUG, 'message', 'app').should == true
+      @pipe.string.should include(' DEBUG -- app: message')
+    end
+
+    it "should allow the progname to be overridden when using block form of debug method" do
+      @logger.progname = 'program'
+      @logger.debug('app') { 'message' }.should == true
+      @pipe.string.should include(' DEBUG -- app: message')
+    end
+
+    it "should allow the progname to be overridden when using block form of info method" do
+      @logger.level = Logger::Severity::INFO
+      @logger.progname = 'program'
+      @logger.info('app') { 'message' }.should == true
+      @pipe.string.should include(' INFO -- app: message')
+    end
+
+    it "should allow the progname to be overridden when using block form of warn method" do
+      @logger.level = Logger::Severity::WARN
+      @logger.progname = 'program'
+      @logger.warn('app') { 'message' }.should == true
+      @pipe.string.should include(' WARN -- app: message')
+    end
+
+    it "should allow the progname to be overridden when using block form of error method" do
+      @logger.level = Logger::Severity::ERROR
+      @logger.progname = 'program'
+      @logger.error('app') { 'message' }.should == true
+      @pipe.string.should include(' ERROR -- app: message')
+    end
+
+    it "should allow the progname to be overridden when using block form of fatal method" do
+      @logger.level = Logger::Severity::FATAL
+      @logger.progname = 'program'
+      @logger.fatal('app') { 'message' }.should == true
+      @pipe.string.should include(' FATAL -- app: message')
+    end
+
+    it "should allow the progname to be overridden when using block form of unknown method" do
+      @logger.level = Logger::Severity::UNKNOWN
+      @logger.progname = 'program'
+      @logger.unknown('app') { 'message' }.should == true
+      @pipe.string.should include(' UNKNOWN -- app: message')
+    end
+  end
+
+  describe "formatter" do
+    it "should use the default formatter by default" do
+      @logger.formatter.should_not be_nil
+      @logger.formatter.should be_kind_of(Logger::Formatter)
+    end
+
+    it "should allow the formatter to be changed" do
+      MyFormatter = Class.new
+      @logger.formatter = MyFormatter.new
+      @logger.formatter.should be_kind_of(MyFormatter)
+    end
+
+    it "should invoke call method on the custom formatter to log a message" do
+      @logger.progname = 'app'
+      @logger.formatter = proc { |severity, time, progname, msg|
+        "#{severity} - #{time.to_i} - #{progname} - #{msg}\n"
+      }
+      @logger.debug('message').should == true
+      @pipe.string.should =~ /^DEBUG - \d+ - app - message\n$/
+    end
+  end
+
+  describe "message types" do
+    it "should allow message to be specified as a Hash" do
+      @logger.debug(text: 'message', context: 'account').should == true
+      @pipe.string.should include({ text: 'message', context: 'account' }.inspect)
+    end
+
+    it "should invoke inspect method to convert object message to string" do
+      message = { text: 'message', context: 'account' }
+      class << message
+        def inspect
+          "#{self[:text]} [#{self[:context]}]"
+        end
+      end
+      @logger.debug(message).should == true
+      @pipe.string.should include('message [account]')
+    end
+
+    it "should convert exception message to string" do
+      message = nil
+      begin
+        raise ArgumentError, 'message'
+      rescue => e
+        message = e
+      end
+
+      # Disable formatting for #full_message by making sure we are not on a tty
+      tty = $stderr.JS[:tty]
+      $stderr.JS[:tty] = false
+
+      @logger.debug(message).should == true
+
+      # Restore a tty status
+      $stderr.JS[:tty] = tty
+
+      @pipe.string.should =~ / message \(ArgumentError\)\n\tfrom /
+    end
+  end
+end
diff --git a/spec/opal/stdlib/native/alias_native_spec.rb b/spec/opal/stdlib/native/alias_native_spec.rb
new file mode 100644
index 00000000..5c1f6e80
--- /dev/null
+++ b/spec/opal/stdlib/native/alias_native_spec.rb
@@ -0,0 +1,27 @@
+require 'native'
+
+describe "Native.alias_native" do
+  it "refers to an attribute on @native" do
+    Class.new {
+      include Native::Wrapper
+
+      alias_native :a, :a
+    }.new(`{ a: 2 }`).a.should == 2
+  end
+
+  it "refers to an attribute on @native and calls it if it's a function" do
+    Class.new {
+      include Native::Wrapper
+
+      alias_native :a, :a
+    }.new(`{ a: function() { return 42; } }`).a.should == 42
+  end
+
+  it "defaults old to new" do
+    Class.new {
+      include Native::Wrapper
+
+      alias_native :a
+    }.new(`{ a: 42 }`).a.should == 42
+  end
+end
diff --git a/spec/opal/stdlib/native/array_spec.rb b/spec/opal/stdlib/native/array_spec.rb
new file mode 100644
index 00000000..8aec1ba5
--- /dev/null
+++ b/spec/opal/stdlib/native/array_spec.rb
@@ -0,0 +1,11 @@
+require 'native'
+
+describe Array do
+  describe '#to_n' do
+    it 'converts an array with native objects to a JS array' do
+      obj = [`{ key: 1 }`]
+      native = obj.to_n
+      `#{native}[0].key`.should == 1
+    end
+  end
+end
diff --git a/spec/opal/stdlib/native/date_spec.rb b/spec/opal/stdlib/native/date_spec.rb
new file mode 100644
index 00000000..e8f285a5
--- /dev/null
+++ b/spec/opal/stdlib/native/date_spec.rb
@@ -0,0 +1,12 @@
+require 'native'
+require 'date'
+
+describe Date do
+  describe '#to_n' do
+    it 'returns native JS date object' do
+      date = Date.new(1984, 1, 24)
+      native = date.to_n
+      expect(`#{native}.toDateString()`).to eq 'Tue Jan 24 1984'
+    end
+  end
+end
diff --git a/spec/opal/stdlib/native/deprecated_include_spec.rb b/spec/opal/stdlib/native/deprecated_include_spec.rb
new file mode 100644
index 00000000..3df99558
--- /dev/null
+++ b/spec/opal/stdlib/native/deprecated_include_spec.rb
@@ -0,0 +1,8 @@
+require 'native'
+
+describe "Native inclusion" do
+  it "is deprecated" do
+    Native.should_receive(:warn).with("Including ::Native is deprecated. Please include Native::Wrapper instead.")
+    Class.new { include Native }
+  end
+end
diff --git a/spec/opal/stdlib/native/each_spec.rb b/spec/opal/stdlib/native/each_spec.rb
new file mode 100644
index 00000000..ce4df79f
--- /dev/null
+++ b/spec/opal/stdlib/native/each_spec.rb
@@ -0,0 +1,13 @@
+require 'native'
+
+describe "Native::Object#each" do
+  it "enumerates on object properties" do
+    Native(`{ a: 2, b: 3 }`).each {|name, value|
+      ((name == :a && value == 2) || (name == :b && value == 3)).should be_true
+    }
+  end
+
+  it "accesses the native when no block is given" do
+    Native(`{ a: 2, b: 3, each: function() { return 42; } }`).each.should == 42
+  end
+end
diff --git a/spec/opal/stdlib/native/element_reference_spec.rb b/spec/opal/stdlib/native/element_reference_spec.rb
new file mode 100644
index 00000000..7c8f886c
--- /dev/null
+++ b/spec/opal/stdlib/native/element_reference_spec.rb
@@ -0,0 +1,16 @@
+require 'native'
+
+describe "Native::Object#[]" do
+  it "should return the same value for bridged classes" do
+    Native(`2`).should === 2
+    Native(`"lol"`).should === "lol"
+  end
+
+  it "should return functions as is" do
+    Native(`{ a: function(){} }`)[:a].should be_kind_of Proc
+  end
+
+  it "should wrap natives into a Native object" do
+    Native(`{ a: { b: 2 } }`)[:a][:b].should == 2
+  end
+end
diff --git a/spec/opal/stdlib/native/exposure_spec.rb b/spec/opal/stdlib/native/exposure_spec.rb
new file mode 100644
index 00000000..578883a6
--- /dev/null
+++ b/spec/opal/stdlib/native/exposure_spec.rb
@@ -0,0 +1,33 @@
+require 'native'
+
+describe 'Native exposure' do
+  describe Class do
+    describe '#native_alias' do
+      it 'exposes a method to javascript' do
+        c = Class.new do
+          def ruby_method
+            :ruby
+          end
+
+          native_alias :rubyMethod, :ruby_method
+        end
+
+        `#{c.new}.rubyMethod()`.should == :ruby
+      end
+    end
+
+    describe '#native_class' do
+      it 'exposes a Class on the JS global object' do
+        c = Class.new do
+          def self.name
+            'Pippo'
+          end
+
+          native_class
+        end
+
+        `Pippo`.should == c
+      end
+    end
+  end
+end
diff --git a/spec/opal/stdlib/native/ext_spec.rb b/spec/opal/stdlib/native/ext_spec.rb
new file mode 100644
index 00000000..0be372cf
--- /dev/null
+++ b/spec/opal/stdlib/native/ext_spec.rb
@@ -0,0 +1,19 @@
+require 'native'
+
+describe Hash do
+  describe '#initialize' do
+    it "returns a hash with a nil value" do
+      h = Hash.new(`{a: null}`)
+      h[:a].should == nil
+    end
+  end
+
+  describe '#to_n' do
+    it "should return a js object representing hash" do
+      Hash.new({:a => 100, :b => 200}.to_n).should == {:a => 100, :b => 200}
+    end
+  end
+end
+
+describe "Hash#to_n" do
+end
diff --git a/spec/opal/stdlib/native/hash_spec.rb b/spec/opal/stdlib/native/hash_spec.rb
new file mode 100644
index 00000000..16859644
--- /dev/null
+++ b/spec/opal/stdlib/native/hash_spec.rb
@@ -0,0 +1,67 @@
+require 'native'
+
+describe Hash do
+  it 'turns a native JS object into a hash' do
+    obj = %x{
+      {
+        a: 1,
+        b: "two",
+        c: {
+          d: 1,
+        },
+        e: [
+          {
+            f: 'g',
+            h: [null],
+          },
+        ],
+      }
+    }
+
+    h = Hash.new(obj)
+    expected_hash = {
+      a: 1,
+      b: "two",
+      c: {
+        d: 1,
+      },
+      e: [
+        {
+          f: 'g',
+          h: [nil],
+        },
+      ],
+    }
+
+    expect(h).to eq(expected_hash)
+  end
+
+  it 'turns Object.create(null) JS objects into a hash' do
+    %x{
+      var obj = Object.create(null);
+      var foo = Object.create(null);
+      var bar = Object.create(null);
+      obj.foo = foo;
+      foo.bar = bar;
+      bar.baz = 'baz';
+    }
+    hash = Hash.new(`obj`)
+
+    expect(hash).to eq({ foo: { bar: { baz: 'baz' } } })
+  end
+
+  describe '#to_n' do
+    it 'converts a hash with native objects as values' do
+      obj = { 'a_key' => `{ key: 1 }` }
+      native = obj.to_n
+      `#{native}.a_key.key`.should == 1
+    end
+
+    it 'passes Ruby objects that cannot be converted' do
+      object = Object.new
+      hash = { foo: object }
+      native = hash.to_n
+      expect(`#{native}.foo`).to eq object
+    end
+  end
+end
diff --git a/spec/opal/stdlib/native/initialize_spec.rb b/spec/opal/stdlib/native/initialize_spec.rb
new file mode 100644
index 00000000..d939f6cd
--- /dev/null
+++ b/spec/opal/stdlib/native/initialize_spec.rb
@@ -0,0 +1,17 @@
+require 'native'
+
+describe "Native#initialize" do
+  it "works when Native is included in a BasicObject" do
+    basic_class = Class.new(BasicObject)
+    basic_object = basic_class.new
+    lambda { basic_object.native? }.should raise_error(NoMethodError)
+
+    basic_class.send :include, Native
+    lambda { basic_class.new(`{}`) }.should_not raise_error
+  end
+
+  it "detects a non native object" do
+    object = Object.new
+    lambda { Native::Object.new(object) }.should raise_error(ArgumentError)
+  end
+end
diff --git a/spec/opal/stdlib/native/method_missing_spec.rb b/spec/opal/stdlib/native/method_missing_spec.rb
new file mode 100644
index 00000000..f5ed97dc
--- /dev/null
+++ b/spec/opal/stdlib/native/method_missing_spec.rb
@@ -0,0 +1,51 @@
+require 'native'
+
+describe "Native::Object#method_missing" do
+  it "should return values" do
+    Native(`{ a: 23 }`).a.should == 23
+    Native(`{ a: { b: 42 } }`).a.b.should == 42
+  end
+
+  it "should call functions" do
+    Native(`{ a: function() { return 42 } }`).a.should == 42
+  end
+
+  it "should pass the proper this to functions" do
+    %x{
+      function foo() {
+        this.baz = 42;
+      }
+
+      foo.prototype.bar = function () {
+        return this.baz;
+      }
+    }
+
+    obj = `new foo()`
+    Native(obj).bar.should == 42
+    Native(obj).baz = 23
+    Native(obj).bar.should == 23
+  end
+
+  it "should set values" do
+    var = `{}`
+
+    Native(var).a = 42
+    `#{var}.a`.should == 42
+    Native(var).a.should == 42
+  end
+
+  it "should pass the block as function" do
+    Native(`{ a: function(func) { return func(); } }`).a { 42 }.should == 42
+  end
+
+  it "should unwrap arguments" do
+    x = `{}`
+
+    Native(`{ a: function(a, b) { return a === b } }`).a(Native(x), x).should == true
+  end
+
+  it "should wrap result" do
+    Native(`{ a: function() { return {}; } }`).a.class.should == Native::Object
+  end
+end
diff --git a/spec/opal/stdlib/native/native_alias_spec.rb b/spec/opal/stdlib/native/native_alias_spec.rb
new file mode 100644
index 00000000..ba59e27d
--- /dev/null
+++ b/spec/opal/stdlib/native/native_alias_spec.rb
@@ -0,0 +1,26 @@
+require 'native'
+
+describe "Class#native_alias" do
+  it "exposes a method to javascript without the '$' prefix" do
+    klass = Class.new {
+      def a
+        2
+      end
+
+      native_alias :a, :a
+    }
+    instance = klass.new
+    `instance.a()`.should == 2
+  end
+
+  it "raises if the aliased method isn't defined" do
+    Class.new do
+      lambda {
+        native_alias :a, :not_a_method
+      }.should raise_error(
+        NameError,
+        %r{undefined method `not_a_method' for class `#<Class:0x\w+>'}
+      )
+    end
+  end
+end
diff --git a/spec/opal/stdlib/native/native_class_spec.rb b/spec/opal/stdlib/native/native_class_spec.rb
new file mode 100644
index 00000000..95b34715
--- /dev/null
+++ b/spec/opal/stdlib/native/native_class_spec.rb
@@ -0,0 +1,18 @@
+require 'native'
+
+describe "Class#native_class" do
+  class SomeClass
+  end
+
+  after {`delete Opal.global.SomeClass`}
+
+  it "adds current constant to the global JS object" do
+    SomeClass.native_class
+    `Opal.global.SomeClass`.should == SomeClass
+  end
+
+  it 'aliases Class#new to the unprefixed new method in JS world' do
+    SomeClass.native_class
+    `Opal.global.SomeClass["new"]()`.is_a?(SomeClass).should == true
+  end
+end
diff --git a/spec/opal/stdlib/native/native_module_spec.rb b/spec/opal/stdlib/native/native_module_spec.rb
new file mode 100644
index 00000000..c91b5778
--- /dev/null
+++ b/spec/opal/stdlib/native/native_module_spec.rb
@@ -0,0 +1,13 @@
+require 'native'
+
+describe "Module#native_module" do
+  module SomeModule
+  end
+
+  after {`delete Opal.global.SomeModule`}
+
+  it "adds current constant to the global JS object" do
+    SomeModule.native_module
+    `Opal.global.SomeModule`.should == SomeModule
+  end
+end
diff --git a/spec/opal/stdlib/native/native_reader_spec.rb b/spec/opal/stdlib/native/native_reader_spec.rb
new file mode 100644
index 00000000..1623756b
--- /dev/null
+++ b/spec/opal/stdlib/native/native_reader_spec.rb
@@ -0,0 +1,22 @@
+require 'native'
+
+describe "Native.native_reader" do
+  it "refers to an attribute on @native" do
+    Class.new {
+      include Native::Wrapper
+
+      native_reader :a
+    }.new(`{ a: 2 }`).a.should == 2
+  end
+
+  it "uses multiple names" do
+    n = Class.new {
+      include Native::Wrapper
+
+      native_reader :a, :b
+    }.new(`{ a: 2, b: 3 }`)
+
+    n.a.should == 2
+    n.b.should == 3
+  end
+end
diff --git a/spec/opal/stdlib/native/native_writer_spec.rb b/spec/opal/stdlib/native/native_writer_spec.rb
new file mode 100644
index 00000000..2ab35932
--- /dev/null
+++ b/spec/opal/stdlib/native/native_writer_spec.rb
@@ -0,0 +1,30 @@
+require 'native'
+
+describe "Native.native_writer" do
+  it "refers to an attribute on @native" do
+    n = Class.new {
+      include Native::Wrapper
+
+      native_reader :a
+      native_writer :a
+    }.new(`{ a: 2 }`)
+
+    n.a = 4
+    n.a.should == 4
+  end
+
+  it "supports multiple names" do
+    n = Class.new {
+      include Native::Wrapper
+
+      native_reader :a, :b
+      native_writer :a, :b
+    }.new(`{ a: 2, b: 3 }`)
+
+    n.a = 4
+    n.b = 5
+
+    n.a.should == 4
+    n.b.should == 5
+  end
+end
diff --git a/spec/opal/stdlib/native/new_spec.rb b/spec/opal/stdlib/native/new_spec.rb
new file mode 100644
index 00000000..90575824
--- /dev/null
+++ b/spec/opal/stdlib/native/new_spec.rb
@@ -0,0 +1,92 @@
+require 'native'
+
+describe "Native()" do
+  it "should return nil for null or undefined" do
+    Native(`null`).should be_nil
+    Native(`undefined`).should be_nil
+  end
+
+  it "should return String" do
+    Native(`""`).should be_an_instance_of String
+  end
+
+  it "should return Integer" do
+    Native(`0`).should be_an_instance_of Number
+  end
+
+  it "should return Float" do
+    Native(`0.01`).should be_an_instance_of Float
+  end
+
+  it "should return Array" do
+    Native(`[]`).should be_an_instance_of Array
+  end
+
+  it "should return Native::Object" do
+    Native(`{}`).instance_of?(Native::Object).should be_true
+  end
+
+  it "should return Array of String" do
+    Native(`[""]`).first.should be_an_instance_of String
+  end
+
+  it "should return Array of Integer" do
+    Native(`[0]`).first.should be_an_instance_of Number
+  end
+
+  it "should return Array of Float" do
+    Native(`[0.01]`).first.should be_an_instance_of Float
+  end
+
+  it "should return Array of Array" do
+    Native(`[[]]`).first.should be_an_instance_of Array
+  end
+
+  it "should return Array of Native::Object" do
+    Native(`[{}]`).first.instance_of?(Native::Object).should be_true
+  end
+
+  it "should return Object with String" do
+    Native(`{"key": ""}`)["key"].should be_an_instance_of String
+  end
+
+  it "should return Object with Integer" do
+    Native(`{"key": 0}`)["key"].should be_an_instance_of Number
+  end
+
+  it "should return Object with Float" do
+    Native(`{"key": 0.01}`)["key"].should be_an_instance_of Float
+  end
+
+  it "should return Object with Array" do
+    Native(`{"key": []}`)["key"].should be_an_instance_of Array
+  end
+
+  it "should return Native::Object with Native::Object" do
+    Native(`{"key": {}}`)["key"].instance_of?(Native::Object).should be_true
+  end
+
+  it "should return Proc" do
+    Native(`function(){}`).should be_an_instance_of Proc
+  end
+
+  it "should return Proc that return String" do
+    Native(`function(){return ""}`).call.should be_an_instance_of String
+  end
+
+  it "should return Proc that return Integer" do
+    Native(`function(){return 0}`).call.should be_an_instance_of Integer
+  end
+
+  it "should return Proc that return Float" do
+    Native(`function(){return 0.01}`).call.should be_an_instance_of Float
+  end
+
+  it "should return Proc that return Array" do
+    Native(`function(){return []}`).call.should be_an_instance_of Array
+  end
+
+  it "should return Proc that return Native::Object" do
+    Native(`function(){return {}}`).call.instance_of?(Native::Object).should be_true
+  end
+end
diff --git a/spec/opal/stdlib/native/struct_spec.rb b/spec/opal/stdlib/native/struct_spec.rb
new file mode 100644
index 00000000..550fec68
--- /dev/null
+++ b/spec/opal/stdlib/native/struct_spec.rb
@@ -0,0 +1,12 @@
+require 'native'
+
+describe Struct do
+  describe '#to_n' do
+    it 'converts a struct with native attributes to a JS object' do
+      klass = Struct.new(:attribute)
+      obj = klass.new(`{ key: 1 }`)
+      native = obj.to_n
+      `#{native}.attribute.key`.should == 1
+    end
+  end
+end
diff --git a/spec/opal/stdlib/pp_spec.rb b/spec/opal/stdlib/pp_spec.rb
new file mode 100644
index 00000000..c0e5c72f
--- /dev/null
+++ b/spec/opal/stdlib/pp_spec.rb
@@ -0,0 +1,5 @@
+describe 'Object#pretty_inspect' do
+  it "doesn't throw due to the use of #<<" do
+    expect("test".pretty_inspect).to eq %{"test"\n}
+  end
+end
diff --git a/spec/opal/stdlib/promise/always_spec.rb b/spec/opal/stdlib/promise/always_spec.rb
new file mode 100644
index 00000000..41c8a090
--- /dev/null
+++ b/spec/opal/stdlib/promise/always_spec.rb
@@ -0,0 +1,49 @@
+require 'promise'
+
+describe 'Promise#always' do
+  it 'calls the block when it was resolved' do
+    x = 42
+    Promise.value(23).then { |v| x = v }.always { |v| x = 2 }
+    x.should == 2
+  end
+
+  it 'calls the block when it was rejected' do
+    x = 42
+    Promise.error(23).rescue { |v| x = v }.always { |v| x = 2 }
+    x.should == 2
+  end
+
+  it 'acts as resolved' do
+    x = 42
+    Promise.error(23).rescue { |v| x = v }.always { x = 2 }.then { x = 3 }
+    x.should == 3
+  end
+
+  it 'can be called multiple times on resolved promises' do
+    p = Promise.value(2)
+    x = 1
+    p.then { x += 1 }
+    p.fail { x += 2 }
+    p.always { x += 3 }
+
+    x.should == 5
+  end
+
+  it 'can be called multiple times on rejected promises' do
+    p = Promise.error(2)
+    x = 1
+    p.then { x += 1 }
+    p.fail { x += 2 }
+    p.always { x += 3 }
+
+    x.should == 6
+  end
+
+  it 'raises with always! if a promise has already been chained' do
+    p = Promise.new
+
+    p.then! {}
+
+    proc { p.always! {} }.should raise_error(ArgumentError)
+  end
+end
diff --git a/spec/opal/stdlib/promise/error_spec.rb b/spec/opal/stdlib/promise/error_spec.rb
new file mode 100644
index 00000000..01fba09e
--- /dev/null
+++ b/spec/opal/stdlib/promise/error_spec.rb
@@ -0,0 +1,15 @@
+require 'promise'
+
+describe 'Promise.error' do
+  it 'rejects the promise with the given error' do
+    Promise.error(23).error.should == 23
+  end
+
+  it 'marks the promise as realized' do
+    Promise.error(23).realized?.should be_true
+  end
+
+  it 'marks the promise as rejected' do
+    Promise.error(23).rejected?.should be_true
+  end
+end
diff --git a/spec/opal/stdlib/promise/rescue_spec.rb b/spec/opal/stdlib/promise/rescue_spec.rb
new file mode 100644
index 00000000..27571fa6
--- /dev/null
+++ b/spec/opal/stdlib/promise/rescue_spec.rb
@@ -0,0 +1,53 @@
+require 'promise'
+
+describe 'Promise#rescue' do
+  it 'calls the block when the promise has already been rejected' do
+    x = 42
+    Promise.error(23).rescue { |v| x = v }
+    x.should == 23
+  end
+
+  it 'calls the block when the promise is rejected' do
+    a = Promise.new
+    x = 42
+
+    a.rescue { |v| x = v }
+    a.reject(23)
+
+    x.should == 23
+  end
+
+  it 'does not call then blocks when the promise is rejected' do
+    x = 42
+    y = 23
+
+    Promise.error(23).then { y = 42 }.rescue { |v| x = v }
+
+    x.should == 23
+    y.should == 23
+  end
+
+  it 'does not call subsequent rescue blocks' do
+    x = 42
+    Promise.error(23).rescue { |v| x = v }.rescue { x = 42 }
+    x.should == 23
+  end
+
+  it 'can be called multiple times on the same promise' do
+    p = Promise.error(2)
+    x = 1
+    p.then { x += 1 }
+    p.rescue { x += 3 }
+    p.rescue { x += 3 }
+
+    x.should == 7
+  end
+
+  it 'raises with rescue! if a promise has already been chained' do
+    p = Promise.new
+
+    p.then! {}
+
+    proc { p.rescue! {} }.should raise_error(ArgumentError)
+  end
+end
diff --git a/spec/opal/stdlib/promise/then_spec.rb b/spec/opal/stdlib/promise/then_spec.rb
new file mode 100644
index 00000000..45dce5b1
--- /dev/null
+++ b/spec/opal/stdlib/promise/then_spec.rb
@@ -0,0 +1,79 @@
+require 'promise'
+
+describe 'Promise#then' do
+  it 'calls the block when the promise has already been resolved' do
+    x = 42
+    Promise.value(23).then { |v| x = v }
+    x.should == 23
+  end
+
+  it 'calls the block when the promise is resolved' do
+    a = Promise.new
+    x = 42
+
+    a.then { |v| x = v }
+    a.resolve(23)
+
+    x.should == 23
+  end
+
+  it 'works with multiple chains' do
+    x = 42
+    Promise.value(2).then { |v| v * 2 }.then { |v| v * 4 }.then { |v| x = v }
+    x.should == 16
+  end
+
+  it 'works when a block returns a promise' do
+    a = Promise.new
+    b = Promise.new
+
+    x = 42
+    a.then { b }.then { |v| x = v }
+
+    a.resolve(42)
+    b.resolve(23)
+
+    x.should == 23
+  end
+
+  it 'sends raised exceptions as rejections' do
+    x = nil
+
+    Promise.value(2).then { raise "hue" }.rescue { |v| x = v }
+
+    x.should be_kind_of(RuntimeError)
+  end
+
+  it 'sends raised exceptions inside rescue blocks as next errors' do
+    x = nil
+
+    Promise.value(2).then { raise "hue" }.rescue { raise "omg" }.rescue { |v| x = v }
+
+    x.should be_kind_of(RuntimeError)
+  end
+
+  it 'allows then to be called multiple times' do
+    p = Promise.value(2)
+    x = 1
+    p.then { x += 1 }
+    p.then { x += 1 }
+
+    x.should == 3
+  end
+
+  it 'raises with then! if a promise has already been chained' do
+    p = Promise.new
+
+    p.then! {}
+
+    proc { p.then! {} }.should raise_error(ArgumentError)
+  end
+
+  it 'should pass a delayed falsy value' do
+    p = Promise.new.resolve(5).then { nil }
+
+    p.then do |value|
+      expect(value).to eq(nil)
+    end
+  end
+end
diff --git a/spec/opal/stdlib/promise/trace_spec.rb b/spec/opal/stdlib/promise/trace_spec.rb
new file mode 100644
index 00000000..df599adc
--- /dev/null
+++ b/spec/opal/stdlib/promise/trace_spec.rb
@@ -0,0 +1,51 @@
+require 'promise'
+
+describe 'Promise#trace' do
+  it 'calls the block with all the previous results' do
+    x = 42
+
+    Promise.value(1).then { 2 }.then { 3 }.trace {|a, b, c|
+      x = a + b + c
+    }
+
+    x.should == 6
+  end
+
+  it 'calls the then after the trace' do
+    x = 42
+
+    Promise.value(1).then { 2 }.then { 3 }.trace {|a, b, c|
+      a + b + c
+    }.then { |v| x = v }
+
+    x.should == 6
+  end
+
+  it 'includes the first value' do
+    x = 42
+
+    Promise.value(1).trace { |a| x = a }
+
+    x.should == 1
+  end
+
+  it 'works after a when' do
+    x = 42
+
+    Promise.value(1).then {
+      Promise.when Promise.value(2), Promise.value(3)
+    }.trace {|a, b|
+      x = a + b[0] + b[1]
+    }
+
+    x.should == 6
+  end
+
+  it 'raises with trace! if a promise has already been chained' do
+    p = Promise.new
+
+    p.then! {}
+
+    proc { p.trace! {} }.should raise_error(ArgumentError)
+  end
+end
diff --git a/spec/opal/stdlib/promise/value_spec.rb b/spec/opal/stdlib/promise/value_spec.rb
new file mode 100644
index 00000000..edf45428
--- /dev/null
+++ b/spec/opal/stdlib/promise/value_spec.rb
@@ -0,0 +1,15 @@
+require 'promise'
+
+describe 'Promise.value' do
+  it 'resolves the promise with the given value' do
+    Promise.value(23).value.should == 23
+  end
+
+  it 'marks the promise as realized' do
+    Promise.value(23).realized?.should be_true
+  end
+
+  it 'marks the promise as resolved' do
+    Promise.value(23).resolved?.should be_true
+  end
+end
diff --git a/spec/opal/stdlib/promise/when_spec.rb b/spec/opal/stdlib/promise/when_spec.rb
new file mode 100644
index 00000000..d80c5e7a
--- /dev/null
+++ b/spec/opal/stdlib/promise/when_spec.rb
@@ -0,0 +1,34 @@
+require 'promise'
+
+describe 'Promise.when' do
+  it 'calls the block with all promises results' do
+    a = Promise.new
+    b = Promise.new
+
+    x = 42
+
+    Promise.when(a, b).then {|y, z|
+      x = y + z
+    }
+
+    a.resolve(1)
+    b.resolve(2)
+
+    x.should == 3
+  end
+
+  it 'can be built lazily' do
+    a = Promise.new
+    b = Promise.value(3)
+
+    x = 42
+
+    Promise.when(a).and(b).then {|c, d|
+      x = c + d
+    }
+
+    a.resolve(2)
+
+    x.should == 5
+  end
+end
diff --git a/spec/opal/stdlib/source_map_spec.rb b/spec/opal/stdlib/source_map_spec.rb
new file mode 100644
index 00000000..2e04e0a2
--- /dev/null
+++ b/spec/opal/stdlib/source_map_spec.rb
@@ -0,0 +1,8 @@
+require 'spec_helper'
+require 'opal/source_map'
+
+describe 'Opal::SourceMap::VLQ' do
+  it 'encodes properly' do
+    Opal::SourceMap::VLQ.encode([0]).should == 'A'
+  end
+end
diff --git a/spec/opal/stdlib/strscan/scan_spec.rb b/spec/opal/stdlib/strscan/scan_spec.rb
new file mode 100644
index 00000000..98edd591
--- /dev/null
+++ b/spec/opal/stdlib/strscan/scan_spec.rb
@@ -0,0 +1,11 @@
+require 'strscan'
+
+describe "StringScanner#scan" do
+  context "when the regex has multiple alternatives" do
+    it "still anchors to the beginning of the remaining text" do
+      # regression test; see GH issue 1074
+      scanner = StringScanner.new("10\nb = `2E-16`")
+      scanner.scan(/[\d_]+\.[\d_]+\b|[\d_]+(\.[\d_]+)?[eE][-+]?[\d_]+\b/).should be_nil
+    end
+  end
+end
diff --git a/spec/opal/stdlib/template/paths_spec.rb b/spec/opal/stdlib/template/paths_spec.rb
new file mode 100644
index 00000000..f3b7f8a1
--- /dev/null
+++ b/spec/opal/stdlib/template/paths_spec.rb
@@ -0,0 +1,10 @@
+require 'spec_helper'
+require 'template'
+
+describe Template do
+  describe ".paths" do
+    it "should be an array of registered templates" do
+      Template.paths.should be_kind_of(Array)
+    end
+  end
+end
diff --git a/spec/opal/stdlib/thread/mutex_spec.rb b/spec/opal/stdlib/thread/mutex_spec.rb
new file mode 100644
index 00000000..ebfa2b83
--- /dev/null
+++ b/spec/opal/stdlib/thread/mutex_spec.rb
@@ -0,0 +1,40 @@
+require 'thread'
+
+describe Mutex do
+  before do
+    @mutex = Mutex.new
+  end
+
+  it "cannot be locked twice" do
+    @mutex.lock
+    lambda do
+      @mutex.lock
+    end.should raise_error(ThreadError)
+  end
+
+  it "reports locked? status" do
+    @mutex.locked?.should be_false
+    @mutex.lock
+    @mutex.locked?.should be_true
+  end
+
+  it "reports locked? status with try_lock" do
+    @mutex.try_lock.should be_true
+    @mutex.locked?.should be_true
+    @mutex.try_lock.should be_false
+  end
+
+  it "is locked and unlocked by synchronize" do
+    @mutex.synchronize do
+      @mutex.locked?.should be_true
+    end
+    @mutex.locked?.should be_false
+  end
+
+  it "will not be locked by synchronize if already locked" do
+    @mutex.lock
+    lambda do
+      @mutex.synchronize {}
+    end.should raise_error(ThreadError)
+  end
+end
diff --git a/spec/opal/stdlib/thread/thread_queue_spec.rb b/spec/opal/stdlib/thread/thread_queue_spec.rb
new file mode 100644
index 00000000..6216f729
--- /dev/null
+++ b/spec/opal/stdlib/thread/thread_queue_spec.rb
@@ -0,0 +1,32 @@
+require 'thread'
+
+describe Thread::Queue do
+  before do
+    @queue = Thread::Queue.new
+  end
+
+  it "is aliased as ::Queue" do
+    ::Thread::Queue.should == ::Queue
+  end
+
+  it "will not allow deadlock" do
+    lambda do
+      @queue.pop
+    end.should raise_error(ThreadError)
+  end
+
+  it "pops in FIFO order" do
+    @queue.push(1)
+    @queue.push(2)
+
+    @queue.pop.should == 1
+    @queue.pop.should == 2
+  end
+
+  it "can be cleared by clear" do
+    @queue.push(1)
+    @queue.clear
+    @queue.size.should == 0
+    @queue.empty?.should be_true
+  end
+end
diff --git a/spec/opal/stdlib/thread/thread_spec.rb b/spec/opal/stdlib/thread/thread_spec.rb
new file mode 100644
index 00000000..bc147eb3
--- /dev/null
+++ b/spec/opal/stdlib/thread/thread_spec.rb
@@ -0,0 +1,60 @@
+require 'thread'
+
+# Our implementation of Thread only supports faux thread-local variables.
+# Since we can't actually create a thread, nothing in rubyspec will run.
+describe Thread do
+  it "returns a value for current" do
+    Thread.current.should_not be_nil
+  end
+
+  it "only has current in list" do
+    Thread.list.should == [Thread.current]
+  end
+
+  it "does not allow creation of new threads" do
+    lambda do
+      Thread.new {}
+    end.should raise_error(NotImplementedError)
+  end
+
+  describe "local storage" do
+    before do
+      @current = Thread.current
+      @current.send(:core_initialize!)
+    end
+
+    it "stores fiber-local variables" do
+      @current[:a] = 'hello'
+      @current[:a].should == 'hello'
+    end
+
+    it "returns fiber-local keys that are assigned" do
+      @current[:a] = 'hello'
+      @current.key?(:a).should be_true
+      @current.keys.should === ['a']
+    end
+
+    it "considers fiber-local keys, as symbols or strings equal" do
+      @current[:a]  = 1
+      @current['a'] = 2
+      @current.keys.size.should == 1
+      @current[:a].should == 2
+    end
+
+    it "implements thread-local variables" do
+      @current.thread_variable_set('a', 1)
+      @current.thread_variable_get('a').should == 1
+      @current.thread_variables.should == ['a']
+    end
+
+    it "distinguishes between fiber-local and thread-local variables" do
+      @current[:a] = 1
+      @current.thread_variables.should == []
+
+      @current.thread_variable_set(:a, 2)
+
+      @current[:a].should == 1
+      @current.thread_variable_get(:a).should == 2
+    end
+  end
+end
diff --git a/spec/ruby_specs b/spec/ruby_specs
new file mode 100644
index 00000000..98708f63
--- /dev/null
+++ b/spec/ruby_specs
@@ -0,0 +1,210 @@
+ruby/core/array
+
+ruby/core/array/pack/a_spec
+!ruby/core/array/pack/at_spec
+!ruby/core/array/pack/b_spec
+ruby/core/array/pack/c_spec
+!ruby/core/array/pack/comment_spec
+!ruby/core/array/pack/d_spec
+!ruby/core/array/pack/e_spec
+!ruby/core/array/pack/empty_spec
+!ruby/core/array/pack/f_spec
+!ruby/core/array/pack/g_spec
+!ruby/core/array/pack/h_spec
+!ruby/core/array/pack/i_spec
+!ruby/core/array/pack/j_spec
+ruby/core/array/pack/l_spec
+!ruby/core/array/pack/m_spec
+!ruby/core/array/pack/n_spec
+!ruby/core/array/pack/p_spec
+!ruby/core/array/pack/percent_spec
+!ruby/core/array/pack/q_spec
+!ruby/core/array/pack/s_spec
+ruby/core/array/pack/u_spec
+!ruby/core/array/pack/v_spec
+!ruby/core/array/pack/w_spec
+!ruby/core/array/pack/x_spec
+!ruby/core/array/pack/z_spec
+
+ruby/core/basicobject
+
+ruby/core/binding
+
+ruby/core/builtin_constants
+ruby/core/class
+ruby/core/comparable
+
+ruby/core/complex
+!ruby/core/complex/marshal_dump_spec
+
+ruby/core/enumerable
+ruby/core/enumerator
+ruby/core/enumerator/arithmetic_sequence
+ruby/core/enumerator/chain
+ruby/core/enumerator/generator
+ruby/core/enumerator/lazy
+ruby/core/enumerator/yielder
+
+ruby/core/exception
+!ruby/core/exception/load_error_spec
+
+ruby/core/false
+ruby/core/integer
+ruby/core/file/basename_spec
+ruby/core/file/dirname_spec
+ruby/core/file/extname_spec
+ruby/core/file/join_spec
+ruby/core/file/expand_path_spec
+ruby/core/file/absolute_path_spec
+ruby/core/float
+ruby/core/hash
+ruby/core/integer
+
+ruby/core/kernel
+!ruby/core/kernel/abort_spec
+!ruby/core/kernel/at_exit_spec
+!ruby/core/kernel/backtick_spec
+!ruby/core/kernel/binding_spec
+!ruby/core/kernel/callcc_spec
+!ruby/core/kernel/caller_locations_spec
+!ruby/core/kernel/catch_spec
+!ruby/core/kernel/chomp_spec
+!ruby/core/kernel/chop_spec
+!ruby/core/kernel/exec_spec
+!ruby/core/kernel/exit_spec
+!ruby/core/kernel/fork_spec
+!ruby/core/kernel/gets_spec
+!ruby/core/kernel/load_spec
+!ruby/core/kernel/open_spec
+!ruby/core/kernel/putc_spec
+!ruby/core/kernel/readlines_spec
+!ruby/core/kernel/readline_spec
+!ruby/core/kernel/require_relative_spec
+!ruby/core/kernel/require_spec
+!ruby/core/kernel/select_spec
+!ruby/core/kernel/set_trace_func_spec
+!ruby/core/kernel/spawn_spec
+!ruby/core/kernel/syscall_spec
+!ruby/core/kernel/system_spec
+!ruby/core/kernel/tainted_spec
+!ruby/core/kernel/taint_spec
+!ruby/core/kernel/test_spec
+!ruby/core/kernel/throw_spec
+!ruby/core/kernel/trace_var_spec
+!ruby/core/kernel/trap_spec
+!ruby/core/kernel/trust_spec
+!ruby/core/kernel/untaint_spec
+!ruby/core/kernel/untrace_var_spec
+!ruby/core/kernel/untrusted_spec
+!ruby/core/kernel/untrust_spec
+
+ruby/core/main
+
+ruby/core/matchdata
+ruby/core/math
+
+ruby/core/method
+
+ruby/core/module
+!ruby/core/module/autoload_spec
+
+ruby/core/marshal/load_spec
+ruby/core/marshal/dump_spec
+ruby/core/marshal/major_version_spec
+ruby/core/marshal/minor_version_spec
+
+ruby/core/nil
+ruby/core/numeric
+
+ruby/core/objectspace
+ruby/core/objectspace/weakmap
+
+ruby/core/proc
+
+ruby/core/range
+ruby/core/rational
+ruby/core/regexp
+ruby/core/random
+
+ruby/core/string
+!ruby/core/string/crypt_spec
+!ruby/core/string/scrub_spec
+
+ruby/core/string/unpack/a_spec
+!ruby/core/string/unpack/at_spec
+ruby/core/string/unpack/b_spec
+ruby/core/string/unpack/c_spec
+!ruby/core/string/unpack/comment_spec
+!ruby/core/string/unpack/d_spec
+!ruby/core/string/unpack/e_spec
+!ruby/core/string/unpack/f_spec
+!ruby/core/string/unpack/g_spec
+ruby/core/string/unpack/h_spec
+!ruby/core/string/unpack/i_spec
+!ruby/core/string/unpack/j_spec
+ruby/core/string/unpack/l_spec
+ruby/core/string/unpack/m_spec
+ruby/core/string/unpack/n_spec
+!ruby/core/string/unpack/p_spec
+!ruby/core/string/unpack/percent_spec
+ruby/core/string/unpack/q_spec
+ruby/core/string/unpack/s_spec
+ruby/core/string/unpack/u_spec
+ruby/core/string/unpack/v_spec
+ruby/core/string/unpack/w_spec
+!ruby/core/string/unpack/x_spec
+ruby/core/string/unpack/z_spec
+
+ruby/core/struct
+ruby/core/symbol/to_proc_spec
+
+ruby/core/time
+!ruby/core/time/_dump_spec
+!ruby/core/time/_load_spec
+
+ruby/core/tracepoint/inspect_spec
+ruby/core/tracepoint/self_spec
+
+ruby/core/true
+ruby/core/unboundmethod
+
+ruby/language
+!ruby/language/execution_spec
+!ruby/language/safe_spec
+
+ruby/library/base64
+ruby/library/bigdecimal
+!ruby/library/bigdecimal/util_spec
+ruby/library/date
+ruby/library/datetime
+ruby/library/delegate/delegator/send_spec
+ruby/library/erb/util/h_spec
+ruby/library/erb/util/html_escape_spec
+ruby/library/logger/severity_spec
+ruby/library/observer
+
+ruby/library/openstruct
+!ruby/library/openstruct/frozen_spec
+!ruby/library/openstruct/marshal_load_spec
+!ruby/library/openstruct/marshal_dump_spec
+
+ruby/library/pathname
+!ruby/library/pathname/empty_spec
+!ruby/library/pathname/glob_spec
+ruby/library/matrix
+ruby/library/matrix/eigenvalue_decomposition
+ruby/library/matrix/lup_decomposition
+ruby/library/matrix/scalar
+ruby/library/matrix/vector
+ruby/library/pp
+ruby/library/securerandom
+ruby/library/set
+ruby/library/shellwords
+ruby/library/singleton
+ruby/library/stringio/each_line_spec
+ruby/library/stringio/each_spec
+ruby/library/stringscanner
+
+ruby/library/time
+
+ruby/library/optionparser
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
new file mode 100644
index 00000000..db66c2bc
--- /dev/null
+++ b/spec/spec_helper.rb
@@ -0,0 +1,31 @@
+require 'opal'
+require 'set'
+require 'opal/platform'
+require 'opal-parser'
+require 'mspec'
+require 'mspec/version'
+require 'support/mspec_rspec_adapter'
+require 'support/guard_platform'
+require 'mspec-opal/runner'
+
+# Node v0.12 as well as Google Chrome/V8 42.0.2311.135 (64-bit)
+# showed to need more tolerance (ruby spec default is 0.00003)
+TOLERANCE = 0.00004
+
+ENV['MSPEC_RUNNER'] = true
+
+module Kernel
+  def opal_parse(str, file='(string)')
+    Opal::Parser.new.parse str, file
+  end
+
+  def eval_js(javascript)
+    `eval(javascript)`
+  end
+end
+
+# To make MSpec happy
+require 'thread'
+
+require 'mspec/utils/script' # Needed by DottedFormatter
+require 'mspec-opal/formatters'
diff --git a/spec/support/guard_platform.rb b/spec/support/guard_platform.rb
new file mode 100644
index 00000000..c17267b8
--- /dev/null
+++ b/spec/support/guard_platform.rb
@@ -0,0 +1,4 @@
+class PlatformGuard < SpecGuard
+  HOST_OS = ENV['OPAL_PLATFORM_NAME']
+  POINTER_SIZE = ENV['OPAL_POINTER_SIZE'] || WORD_SIZE
+end
diff --git a/spec/support/match_helpers.rb b/spec/support/match_helpers.rb
new file mode 100644
index 00000000..06fa2feb
--- /dev/null
+++ b/spec/support/match_helpers.rb
@@ -0,0 +1,57 @@
+module MatchHelpers
+  class MatchMatcher
+    def initialize(expected)
+      fail "Expected #{expected} to be a Regexp!" unless expected.is_a?(Regexp)
+      @expected = expected
+    end
+
+    def matches?(actual)
+      @actual = actual
+      @expected.match(@actual)
+    end
+
+    def failure_message
+      ["Expected #{@actual.inspect} (#{@actual.class})",
+       "to match #{@expected}"]
+    end
+
+    def negative_failure_message
+      ["Expected #{@actual.inspect} (#{@actual.class})",
+       "not to match #{@expected}"]
+    end
+  end
+
+  class EndWithHelper
+    def initialize(expected)
+      @expected = expected
+    end
+
+    def matches?(actual)
+      @actual = actual
+      @actual.end_with?(@expected)
+    end
+
+    def failure_message
+      ["Expected #{@actual.inspect} (#{@actual.class})",
+       "to end with #{@expected}"]
+    end
+
+    def negative_failure_message
+      ["Expected #{@actual.inspect} (#{@actual.class})",
+       "not to end with #{@expected}"]
+    end
+  end
+end
+
+if !defined? RSpec
+  class Object
+    def match(expected)
+      MatchHelpers::MatchMatcher.new(expected)
+    end
+
+    def end_with(expected)
+      MatchHelpers::EndWithHelper.new(expected)
+    end
+  end
+end
+
diff --git a/spec/support/mspec_rspec_adapter.rb b/spec/support/mspec_rspec_adapter.rb
new file mode 100644
index 00000000..87d58892
--- /dev/null
+++ b/spec/support/mspec_rspec_adapter.rb
@@ -0,0 +1,33 @@
+module MSpecRSpecAdapter
+  def expect(object)
+    MSpecRSpecAdapterShould.new(object)
+  end
+
+  def eq(expected)
+    MSpecRSpecAdapterEq.new(expected)
+  end
+
+  class MSpecRSpecAdapterEq < Struct.new(:object)
+  end
+
+  class MSpecRSpecAdapterShould < Struct.new(:object)
+    def to(expectation)
+      apply_expectation(:should, expectation)
+    end
+
+    def apply_expectation(type, expectation)
+      if MSpecRSpecAdapterEq === expectation
+        object.send(type) == expectation.object
+      else
+        object.send(type, expectation)
+      end
+    end
+
+    def not_to(expectation)
+      apply_expectation(:should_not, expectation)
+    end
+    alias to_not not_to
+  end
+end
+
+include MSpecRSpecAdapter unless defined? RSpec
diff --git a/spec/support/rewriters_helper.rb b/spec/support/rewriters_helper.rb
new file mode 100644
index 00000000..beb83f33
--- /dev/null
+++ b/spec/support/rewriters_helper.rb
@@ -0,0 +1,74 @@
+module RewritersHelper
+  module Common
+    def s(type, *children)
+      ::Opal::AST::Node.new(type, children)
+    end
+
+    def parse(source)
+      buffer = Opal::Parser::SourceBuffer.new('(eval)')
+      buffer.source = source
+      parser = Opal::Parser.default_parser
+      parser.parse(buffer)
+    end
+
+    # Parse, but drop the :top node
+    def ast_of(source)
+      parse(source).children.first
+    end
+  end
+
+  module DSL
+    def use_only_described_rewriter!
+      around(:each) do |e|
+        Opal::Rewriter.disable(except: described_class) { e.run }
+      end
+    end
+  end
+
+  include Common
+
+  def self.included(klass)
+    klass.extend(Common)
+    klass.extend(DSL)
+  end
+
+  def rewriter
+    described_class.new
+  end
+
+  def rewritten(ast = input)
+    rewriter.process(ast)
+  end
+
+  alias rewrite rewritten
+  alias processed rewritten
+
+  def expect_rewritten(ast)
+    expect(rewritten(ast))
+  end
+
+  def expect_no_rewriting_for(ast)
+    expect_rewritten(ast).to eq(ast)
+  end
+
+  def parse_without_rewriting(source)
+    Opal::Rewriter.disable { parse(source) }
+  end
+end
+
+RSpec.shared_examples 'it rewrites source-to-source' do |from_source, to_source|
+  it "rewrites source #{from_source} to source #{to_source}" do
+    rewritten = parse(from_source)
+    expected = parse(to_source)
+
+    expect(rewritten).to eq(expected)
+  end
+end
+
+RSpec.shared_examples 'it rewrites source-to-AST' do |from_source, to_ast|
+  it "rewrites source #{from_source} to AST #{to_ast}" do
+    rewritten = parse(from_source).children.first
+
+    expect(rewritten).to eq(to_ast)
+  end
+end
diff --git a/spec/support/source_map_helper.rb b/spec/support/source_map_helper.rb
new file mode 100644
index 00000000..f446198e
--- /dev/null
+++ b/spec/support/source_map_helper.rb
@@ -0,0 +1,190 @@
+module SourceMapHelper
+  extend self
+
+  # Just for debugging purposes
+  def inspect_source(source)
+    puts source_with_lines(source)
+  end
+
+  # Just for debugging purposes
+  def source_with_lines(source)
+    source.split("\n", -1).map.with_index { |line, index| "#{(index).to_s.rjust(3)} | #{line}" }.join("\n")
+  end
+
+  def fragment(line: nil, column: nil, source_map_name: nil, code: '', sexp_type: nil)
+    double('Fragment', line: line, column: column, source_map_name: source_map_name, code: code, sexp_type: sexp_type)
+  end
+
+  SourcePosition = Struct.new(:line, :column, :file) do
+    def inspect
+      "#<SourcePosition line:#{line} column:#{column} file:#{file.inspect}>"
+    end
+    alias_method :to_s, :inspect
+
+    def in_source(source)
+      source.split("\n", -1)[line].to_s[column..-1]
+    end
+
+    def self.absolutize_mappings(relative_mappings)
+      reference_segment = [0, 0, 0, 0, 0]
+      relative_mappings.map do |relative_mapping|
+        # Reference: [generated_column, source_index, original_line, original_column, map_name_index]
+        reference_segment[0] = 0 # reset the generated_column at each new line
+
+        relative_mapping.map do |relative_segment|
+          segment = []
+
+          segment[0] = relative_segment[0].to_int +  reference_segment[0].to_int
+          segment[1] = relative_segment[1].to_int + (reference_segment[1] || 0).to_int if relative_segment[1]
+          segment[2] = relative_segment[2].to_int + (reference_segment[2] || 0).to_int if relative_segment[2]
+          segment[3] = relative_segment[3].to_int + (reference_segment[3] || 0).to_int if relative_segment[3]
+          segment[4] = relative_segment[4].to_int + (reference_segment[4] || 0).to_int if relative_segment[4]
+
+          reference_segment = segment
+          segment
+        end
+      end
+    end
+
+    def find_section_in_map_index(index_map)
+      sections = index_map.to_h[:sections]
+      section, section_index = sections.each.with_index.find do |map, index|
+        next_map = sections[index + 1] or next true # if there's no next map the current one is good
+
+        (
+          line > map[:offset][:line] || (line == map[:offset][:line] && column >= map[:offset][:column])
+        ) && (
+          line < next_map[:offset][:line] || (line == next_map[:offset][:line] && column < map[:offset][:column])
+        )
+      end
+
+      next_section = sections[section_index + 1]
+
+      section or raise "no map found for #{inspect} among available sections: #{sections.map { |s| s[:offset] }}"
+    end
+
+    def mapped_with(map)
+      case map
+      when Opal::SourceMap::Index
+        offset_section = find_section_in_map_index(map)
+
+        offset = offset_section[:offset] || raise(offset_section.inspect)
+
+        offset_line = line - offset[:line]
+        offset_column = line.zero? ? (column - offset[:column]) : column
+        offset_position = self.class.new(offset_line, offset_column, offset_section[:map][:sources].first)
+
+        offset_position.mapped_with_file_map(offset_section[:map])
+
+      when Opal::SourceMap::File
+        mapped_with_file_map(map.to_h)
+
+      else raise "unknown map type: #{map.inspect}"
+      end
+    end
+
+    def mapped_with_file_map(map_to_h)
+      relative_mappings = Opal::SourceMap::VLQ.decode_mappings(map_to_h[:mappings])
+      absolute_mappings = SourcePosition.absolutize_mappings(relative_mappings)
+      mappings_line = absolute_mappings[line] or raise(
+        "can't find a mapping for #{inspect} in the available #{absolute_mappings.size} absolute mappings: #{absolute_mappings.inspect}"
+      )
+
+      # keep all segments with a column from the required position on
+      code_before_segment_strategy = -> segments {
+        segments.select do |segment|
+          segment[0] >= column
+        end.sort_by do |segment|
+          segment[0] - column # sort by the distance from the required position
+        end.first
+      }
+
+      code_after_segment_strategy = -> segments {
+        segments.select do |segment|
+          column >= segment[0]
+        end.sort_by do |segment|
+          column - segment[0] # sort by the distance from the required position
+        end.first
+      }
+
+      absolute_segments = absolute_mappings[line] or raise
+      matched_segment = code_before_segment_strategy[absolute_segments] || code_after_segment_strategy[absolute_segments]
+
+      raise "can't find a matching segment for #{inspect} in #{absolute_mappings[line]}" unless matched_segment
+
+      source_index    = matched_segment[1]
+      original_source = map_to_h[:sources][source_index]
+      original_line   = matched_segment[2]
+      original_column = matched_segment[3]
+
+      self.class.new(original_line, original_column, original_source)
+    end
+
+    def original_source(map)
+      map_to_h = map.to_h
+      matching_source = -> map_data { map_data[:sourcesContent].first if map_data[:sources] == [file] }
+      (map_to_h[:sections] || [{offset: {}, map: map_to_h}]).map { |section| matching_source[section[:map]] }.compact.first or
+      raise "can't find a source for #{file.inspect} in #{map_to_h.to_json}"
+    end
+
+    def self.find_code(code, source:)
+      line_contents, line = source.split("\n", -1).to_enum.with_index.find do |contents, index|
+        contents.include? code
+      end
+      return nil if line_contents.nil?
+      column = line_contents.index(code)
+      new(line, column)
+    end
+  end
+
+  RSpec::Matchers.define :be_at_line_and_column do |line, column, source:|
+    expected_position = SourcePosition.new(line, column)
+
+    match do |code|
+      actual_position = SourcePosition.find_code(code, source: source)
+      actual_position == expected_position
+    end
+
+    failure_message do |code|
+      actual_position = SourcePosition.find_code(code, source: source)
+      actual_code = expected_position.in_source(source)
+      "expected #{code.inspect} to be at #{expected_position}, " +
+      "instead #{actual_code.inspect} was found at the expected position, while code was found at #{actual_position}"
+    end
+  end
+
+  RSpec::Matchers.define :be_mapped_to_line_and_column do |line, column, source:, map:, file: nil|
+    expected_position = SourcePosition.new(line, column, file)
+
+    match do |code|
+      actual_position = SourcePosition.find_code(code, source: source).mapped_with(map)
+      actual_position == expected_position
+    end
+
+    failure_message do |code|
+      code_position = SourcePosition.find_code(code, source: source)
+      actual_position = code_position.mapped_with(map)
+
+      expected_source = expected_position.original_source(map)
+      expected_code   = expected_position.in_source(expected_source)
+
+      actual_source   = actual_position.original_source(map)
+      actual_code     = actual_position.in_source(actual_source)
+
+      if Opal::SourceMap::Index === map
+        actual_section   = actual_position.find_section_in_map_index(map)
+        expected_section = expected_position.find_section_in_map_index(map)
+        map.to_h[:sections].each { |s| p s[:offset] }
+        actual_offset   = " (offset: #{actual_section[:offset]})"
+        expected_offset = " (offset: #{expected_section[:offset]})"
+      end
+
+      "expected #{code.inspect} at #{code_position.inspect} to be mapped to #{expected_position.inspect}" +
+      "\n\nEXPECTED #{expected_code.inspect} at #{expected_position}#{expected_offset}:\n"+
+      source_with_lines(expected_source) +
+      "\n\nACTUAL #{actual_code.inspect} at #{actual_position}#{actual_offset}:\n"+
+      source_with_lines(actual_source) +
+      "\n"
+    end
+  end
+end
diff --git a/stdlib/README.md b/stdlib/README.md
new file mode 100644
index 00000000..cd66bb29
--- /dev/null
+++ b/stdlib/README.md
@@ -0,0 +1,3 @@
+# Opal stdlib
+
+This is the Opal stdlib implementation API documentation.
diff --git a/stdlib/await.rb b/stdlib/await.rb
new file mode 100644
index 00000000..0e6c8701
--- /dev/null
+++ b/stdlib/await.rb
@@ -0,0 +1,83 @@
+# helpers: coerce_to
+# await: true
+
+if `Opal.config.experimental_features_severity == 'warning'`
+  warn 'Await functionality is a technology preview, which means it may change its behavior ' \
+      'in the future unless this warning is removed. If you are interested in this part, ' \
+      'please make sure you track the async/await/promises tag on Opal issues: ' \
+      'https://github.com/opal/opal/issues?q=label%3Aasync%2Fawait%2Fpromises'
+end
+
+%x{
+  var AsyncFunction = Object.getPrototypeOf(async function() {}).constructor;
+}
+
+require 'promise/v2'
+
+class Array
+  def map_await(&block)
+    i = 0
+    results = []
+    while i < `self.length`
+      results << yield(self[i]).__await__
+      i += 1
+    end
+    results
+  end
+
+  def each_await(&block)
+    map_await(&block).__await__
+    self
+  end
+end
+
+module Enumerable
+  def each_async(&block)
+    PromiseV2.when(*map(&block)).__await__
+  end
+end
+
+module Kernel
+  # Overwrite Kernel.exit to be async-capable.
+  def exit(status = true)
+    $__at_exit__ ||= []
+
+    until $__at_exit__.empty?
+      block = $__at_exit__.pop
+      block.call.__await__
+    end
+
+    %x{
+      if (status.$$is_boolean) {
+        status = status ? 0 : 1;
+      } else {
+        status = $coerce_to(status, #{Integer}, 'to_int')
+      }
+
+      Opal.exit(status);
+    }
+    nil
+  end
+
+  def sleep(seconds)
+    prom = PromiseV2.new
+    `setTimeout(#{proc { prom.resolve }}, #{seconds * 1000})`
+    prom
+  end
+end
+
+module Kernel
+  alias await itself
+end
+
+class Proc
+  def async?
+    `self instanceof AsyncFunction`
+  end
+end
+
+class Method
+  def async?
+    @method.async?
+  end
+end
diff --git a/stdlib/base64.rb b/stdlib/base64.rb
new file mode 100644
index 00000000..21b9cad1
--- /dev/null
+++ b/stdlib/base64.rb
@@ -0,0 +1,84 @@
+module Base64
+  # FROM https://github.com/davidchambers/Base64.js/blob/69262ec7e1fa4541de5700a1b0b03b0de0e3f5aa/base64.js
+  %x{
+    var chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
+    var encode, decode;
+
+    // encoder
+    // [https://gist.github.com/999166] by [https://github.com/nignag]
+    encode = function (input) {
+      var str = String(input);
+      /* eslint-disable */
+      for (
+        // initialize result and counter
+        var block, charCode, idx = 0, map = chars, output = '';
+        // if the next str index does not exist:
+        //   change the mapping table to "="
+        //   check if d has no fractional digits
+        str.charAt(idx | 0) || (map = '=', idx % 1);
+        // "8 - idx % 1 * 8" generates the sequence 2, 4, 6, 8
+        output += map.charAt(63 & block >> 8 - idx % 1 * 8)
+      ) {
+        charCode = str.charCodeAt(idx += 3/4);
+        if (charCode > 0xFF) {
+          #{raise ArgumentError, 'invalid character (failed: The string to be encoded contains characters outside of the Latin1 range.)'};
+        }
+        block = block << 8 | charCode;
+      }
+      return output;
+      /* eslint-enable */
+    };
+
+    // decoder
+    // [https://gist.github.com/1020396] by [https://github.com/atk]
+    decode = function (input) {
+      var str = String(input).replace(/=+$/, '');
+      if (str.length % 4 == 1) {
+        #{raise ArgumentError, 'invalid base64 (failed: The string to be decoded is not correctly encoded.)'};
+      }
+      /* eslint-disable */
+      for (
+        // initialize result and counters
+        var bc = 0, bs, buffer, idx = 0, output = '';
+        // get next character
+        buffer = str.charAt(idx++);
+        // character found in table? initialize bit storage and add its ascii value;
+        ~buffer && (bs = bc % 4 ? bs * 64 + buffer : buffer,
+          // and if not first of each 4 characters,
+          // convert the first 8 bits to one ascii character
+          bc++ % 4) ? output += String.fromCharCode(255 & bs >> (-2 * bc & 6)) : 0
+      ) {
+        // try to find character in table (0-63, not found => -1)
+        buffer = chars.indexOf(buffer);
+      }
+      return output;
+      /* eslint-enable */
+    };
+  }
+
+  def self.decode64(string)
+    `decode(string.replace(/\r?\n/g, ''))`
+  end
+
+  def self.encode64(string)
+    `encode(string).replace(/(.{60})/g, "$1\n").replace(/([^\n])$/g, "$1\n")`
+  end
+
+  def self.strict_decode64(string)
+    `decode(string)`
+  end
+
+  def self.strict_encode64(string)
+    `encode(string)`
+  end
+
+  def self.urlsafe_decode64(string)
+    `decode(string.replace(/\-/g, '+').replace(/_/g, '/'))`
+  end
+
+  def self.urlsafe_encode64(string, padding: true)
+    str = `encode(string).replace(/\+/g, '-').replace(/\//g, '_')`
+    str = str.delete('=') unless padding
+    str
+  end
+end
diff --git a/stdlib/benchmark.rb b/stdlib/benchmark.rb
new file mode 100644
index 00000000..976a14c2
--- /dev/null
+++ b/stdlib/benchmark.rb
@@ -0,0 +1,571 @@
+#--
+# benchmark.rb - a performance benchmarking library
+#
+# $Id$
+#
+# Created by Gotoken (gotoken@notwork.org).
+#
+# Documentation by Gotoken (original RD), Lyle Johnson (RDoc conversion), and
+# Gavin Sinclair (editing).
+#++
+#
+# == Overview
+#
+# The Benchmark module provides methods for benchmarking Ruby code, giving
+# detailed reports on the time taken for each task.
+#
+
+# The Benchmark module provides methods to measure and report the time
+# used to execute Ruby code.
+#
+# * Measure the time to construct the string given by the expression
+#   <code>"a"*1_000_000_000</code>:
+#
+#       require 'benchmark'
+#
+#       puts Benchmark.measure { "a"*1_000_000_000 }
+#
+#   On my machine (OSX 10.8.3 on i5 1.7 Ghz) this generates:
+#
+#       0.350000   0.400000   0.750000 (  0.835234)
+#
+#   This report shows the user CPU time, system CPU time, the sum of
+#   the user and system CPU times, and the elapsed real time. The unit
+#   of time is seconds.
+#
+# * Do some experiments sequentially using the #bm method:
+#
+#       require 'benchmark'
+#
+#       n = 5000000
+#       Benchmark.bm do |x|
+#         x.report { for i in 1..n; a = "1"; end }
+#         x.report { n.times do   ; a = "1"; end }
+#         x.report { 1.upto(n) do ; a = "1"; end }
+#       end
+#
+#   The result:
+#
+#              user     system      total        real
+#          1.010000   0.000000   1.010000 (  1.014479)
+#          1.000000   0.000000   1.000000 (  0.998261)
+#          0.980000   0.000000   0.980000 (  0.981335)
+#
+# * Continuing the previous example, put a label in each report:
+#
+#       require 'benchmark'
+#
+#       n = 5000000
+#       Benchmark.bm(7) do |x|
+#         x.report("for:")   { for i in 1..n; a = "1"; end }
+#         x.report("times:") { n.times do   ; a = "1"; end }
+#         x.report("upto:")  { 1.upto(n) do ; a = "1"; end }
+#       end
+#
+# The result:
+#
+#                     user     system      total        real
+#       for:      1.010000   0.000000   1.010000 (  1.015688)
+#       times:    1.000000   0.000000   1.000000 (  1.003611)
+#       upto:     1.030000   0.000000   1.030000 (  1.028098)
+#
+# * The times for some benchmarks depend on the order in which items
+#   are run.  These differences are due to the cost of memory
+#   allocation and garbage collection. To avoid these discrepancies,
+#   the #bmbm method is provided.  For example, to compare ways to
+#   sort an array of floats:
+#
+#       require 'benchmark'
+#
+#       array = (1..1000000).map { rand }
+#
+#       Benchmark.bmbm do |x|
+#         x.report("sort!") { array.dup.sort! }
+#         x.report("sort")  { array.dup.sort  }
+#       end
+#
+#   The result:
+#
+#        Rehearsal -----------------------------------------
+#        sort!   1.490000   0.010000   1.500000 (  1.490520)
+#        sort    1.460000   0.000000   1.460000 (  1.463025)
+#        -------------------------------- total: 2.960000sec
+#
+#                    user     system      total        real
+#        sort!   1.460000   0.000000   1.460000 (  1.460465)
+#        sort    1.450000   0.010000   1.460000 (  1.448327)
+#
+# * Report statistics of sequential experiments with unique labels,
+#   using the #benchmark method:
+#
+#       require 'benchmark'
+#       include Benchmark         # we need the CAPTION and FORMAT constants
+#
+#       n = 5000000
+#       Benchmark.benchmark(CAPTION, 7, FORMAT, ">total:", ">avg:") do |x|
+#         tf = x.report("for:")   { for i in 1..n; a = "1"; end }
+#         tt = x.report("times:") { n.times do   ; a = "1"; end }
+#         tu = x.report("upto:")  { 1.upto(n) do ; a = "1"; end }
+#         [tf+tt+tu, (tf+tt+tu)/3]
+#       end
+#
+#   The result:
+#
+#                     user     system      total        real
+#        for:      0.950000   0.000000   0.950000 (  0.952039)
+#        times:    0.980000   0.000000   0.980000 (  0.984938)
+#        upto:     0.950000   0.000000   0.950000 (  0.946787)
+#        >total:   2.880000   0.000000   2.880000 (  2.883764)
+#        >avg:     0.960000   0.000000   0.960000 (  0.961255)
+
+module Benchmark
+
+  BENCHMARK_VERSION = "2002-04-25" # :nodoc:
+
+  # Invokes the block with a Benchmark::Report object, which
+  # may be used to collect and report on the results of individual
+  # benchmark tests. Reserves +label_width+ leading spaces for
+  # labels on each line. Prints +caption+ at the top of the
+  # report, and uses +format+ to format each line.
+  # Returns an array of Benchmark::Tms objects.
+  #
+  # If the block returns an array of
+  # Benchmark::Tms objects, these will be used to format
+  # additional lines of output. If +label+ parameters are
+  # given, these are used to label these extra lines.
+  #
+  # _Note_: Other methods provide a simpler interface to this one, and are
+  # suitable for nearly all benchmarking requirements.  See the examples in
+  # Benchmark, and the #bm and #bmbm methods.
+  #
+  # Example:
+  #
+  #     require 'benchmark'
+  #     include Benchmark          # we need the CAPTION and FORMAT constants
+  #
+  #     n = 5000000
+  #     Benchmark.benchmark(CAPTION, 7, FORMAT, ">total:", ">avg:") do |x|
+  #       tf = x.report("for:")   { for i in 1..n; a = "1"; end }
+  #       tt = x.report("times:") { n.times do   ; a = "1"; end }
+  #       tu = x.report("upto:")  { 1.upto(n) do ; a = "1"; end }
+  #       [tf+tt+tu, (tf+tt+tu)/3]
+  #     end
+  #
+  # Generates:
+  #
+  #                     user     system      total        real
+  #       for:      0.970000   0.000000   0.970000 (  0.970493)
+  #       times:    0.990000   0.000000   0.990000 (  0.989542)
+  #       upto:     0.970000   0.000000   0.970000 (  0.972854)
+  #       >total:   2.930000   0.000000   2.930000 (  2.932889)
+  #       >avg:     0.976667   0.000000   0.976667 (  0.977630)
+  #
+
+  def benchmark(caption = "", label_width = nil, format = nil, *labels) # :yield: report
+    sync = STDOUT.sync
+    STDOUT.sync = true
+    label_width ||= 0
+    label_width += 1
+    format ||= FORMAT
+    print ' '*label_width + caption unless caption.empty?
+    report = Report.new(label_width, format)
+    results = yield(report)
+    Array === results and results.grep(Tms).each {|t|
+      print((labels.shift || t.label || "").ljust(label_width), t.format(format))
+    }
+    report.list
+  ensure
+    STDOUT.sync = sync unless sync.nil?
+  end
+
+
+  # A simple interface to the #benchmark method, #bm generates sequential
+  # reports with labels.  The parameters have the same meaning as for
+  # #benchmark.
+  #
+  #     require 'benchmark'
+  #
+  #     n = 5000000
+  #     Benchmark.bm(7) do |x|
+  #       x.report("for:")   { for i in 1..n; a = "1"; end }
+  #       x.report("times:") { n.times do   ; a = "1"; end }
+  #       x.report("upto:")  { 1.upto(n) do ; a = "1"; end }
+  #     end
+  #
+  # Generates:
+  #
+  #                     user     system      total        real
+  #       for:      0.960000   0.000000   0.960000 (  0.957966)
+  #       times:    0.960000   0.000000   0.960000 (  0.960423)
+  #       upto:     0.950000   0.000000   0.950000 (  0.954864)
+  #
+
+  def bm(label_width = 0, *labels, &blk) # :yield: report
+    benchmark(CAPTION, label_width, FORMAT, *labels, &blk)
+  end
+
+
+  # Sometimes benchmark results are skewed because code executed
+  # earlier encounters different garbage collection overheads than
+  # that run later. #bmbm attempts to minimize this effect by running
+  # the tests twice, the first time as a rehearsal in order to get the
+  # runtime environment stable, the second time for
+  # real. GC.start is executed before the start of each of
+  # the real timings; the cost of this is not included in the
+  # timings. In reality, though, there's only so much that #bmbm can
+  # do, and the results are not guaranteed to be isolated from garbage
+  # collection and other effects.
+  #
+  # Because #bmbm takes two passes through the tests, it can
+  # calculate the required label width.
+  #
+  #       require 'benchmark'
+  #
+  #       array = (1..1000000).map { rand }
+  #
+  #       Benchmark.bmbm do |x|
+  #         x.report("sort!") { array.dup.sort! }
+  #         x.report("sort")  { array.dup.sort  }
+  #       end
+  #
+  # Generates:
+  #
+  #        Rehearsal -----------------------------------------
+  #        sort!   1.440000   0.010000   1.450000 (  1.446833)
+  #        sort    1.440000   0.000000   1.440000 (  1.448257)
+  #        -------------------------------- total: 2.890000sec
+  #
+  #                    user     system      total        real
+  #        sort!   1.460000   0.000000   1.460000 (  1.458065)
+  #        sort    1.450000   0.000000   1.450000 (  1.455963)
+  #
+  # #bmbm yields a Benchmark::Job object and returns an array of
+  # Benchmark::Tms objects.
+  #
+  def bmbm(width = 0) # :yield: job
+    job = Job.new(width)
+    yield(job)
+    width = job.width + 1
+    sync = STDOUT.sync
+    STDOUT.sync = true
+
+    # rehearsal
+    puts 'Rehearsal '.ljust(width+CAPTION.length,'-')
+    ets = job.list.inject(Tms.new) { |sum,(label,item)|
+      print label.ljust(width)
+      res = Benchmark.measure(&item)
+      print res.format
+      sum + res
+    }.format("total: %tsec")
+    print " #{ets}\n\n".rjust(width+CAPTION.length+2,'-')
+
+    # take
+    print ' '*width + CAPTION
+    job.list.map { |label,item|
+      GC.start
+      print label.ljust(width)
+      Benchmark.measure(label, &item).tap { |res| print res }
+    }
+  ensure
+    STDOUT.sync = sync unless sync.nil?
+  end
+
+  # :stopdoc:
+  case
+  when defined?(Process::CLOCK_MONOTONIC)
+    BENCHMARK_CLOCK = Process::CLOCK_MONOTONIC
+  else
+    BENCHMARK_CLOCK = Process::CLOCK_REALTIME
+  end
+  # :startdoc:
+
+  #
+  # Returns the time used to execute the given block as a
+  # Benchmark::Tms object.
+  #
+  def measure(label = "") # :yield:
+    t0, r0 = Process.times, Process.clock_gettime(BENCHMARK_CLOCK)
+    yield
+    t1, r1 = Process.times, Process.clock_gettime(BENCHMARK_CLOCK)
+    Benchmark::Tms.new(t1.utime  - t0.utime,
+                       t1.stime  - t0.stime,
+                       t1.cutime - t0.cutime,
+                       t1.cstime - t0.cstime,
+                       r1 - r0,
+                       label)
+  end
+
+  #
+  # Returns the elapsed real time used to execute the given block.
+  #
+  def realtime # :yield:
+    r0 = Process.clock_gettime(BENCHMARK_CLOCK)
+    yield
+    Process.clock_gettime(BENCHMARK_CLOCK) - r0
+  end
+
+  module_function :benchmark, :measure, :realtime, :bm, :bmbm
+
+  #
+  # A Job is a sequence of labelled blocks to be processed by the
+  # Benchmark.bmbm method.  It is of little direct interest to the user.
+  #
+  class Job # :nodoc:
+    #
+    # Returns an initialized Job instance.
+    # Usually, one doesn't call this method directly, as new
+    # Job objects are created by the #bmbm method.
+    # +width+ is a initial value for the label offset used in formatting;
+    # the #bmbm method passes its +width+ argument to this constructor.
+    #
+    def initialize(width)
+      @width = width
+      @list = []
+    end
+
+    #
+    # Registers the given label and block pair in the job list.
+    #
+    def item(label = "", &blk) # :yield:
+      raise ArgumentError, "no block" unless block_given?
+      label = label.to_s
+      w = label.length
+      @width = w if @width < w
+      @list << [label, blk]
+      self
+    end
+
+    alias report item
+
+    # An array of 2-element arrays, consisting of label and block pairs.
+    attr_reader :list
+
+    # Length of the widest label in the #list.
+    attr_reader :width
+  end
+
+  #
+  # This class is used by the Benchmark.benchmark and Benchmark.bm methods.
+  # It is of little direct interest to the user.
+  #
+  class Report # :nodoc:
+    #
+    # Returns an initialized Report instance.
+    # Usually, one doesn't call this method directly, as new
+    # Report objects are created by the #benchmark and #bm methods.
+    # +width+ and +format+ are the label offset and
+    # format string used by Tms#format.
+    #
+    def initialize(width = 0, format = nil)
+      @width, @format, @list = width, format, []
+    end
+
+    #
+    # Prints the +label+ and measured time for the block,
+    # formatted by +format+. See Tms#format for the
+    # formatting rules.
+    #
+    def item(label = "", *format, &blk) # :yield:
+      print label.to_s.ljust(@width)
+      @list << res = Benchmark.measure(label, &blk)
+      print res.format(@format, *format)
+      res
+    end
+
+    alias report item
+
+    # An array of Benchmark::Tms objects representing each item.
+    attr_reader :list
+  end
+
+
+
+  #
+  # A data object, representing the times associated with a benchmark
+  # measurement.
+  #
+  class Tms
+
+    # Default caption, see also Benchmark::CAPTION
+    CAPTION = "      user     system      total        real\n"
+
+    # Default format string, see also Benchmark::FORMAT
+    FORMAT = "%10.6u %10.6y %10.6t %10.6r\n"
+
+    # User CPU time
+    attr_reader :utime
+
+    # System CPU time
+    attr_reader :stime
+
+    # User CPU time of children
+    attr_reader :cutime
+
+    # System CPU time of children
+    attr_reader :cstime
+
+    # Elapsed real time
+    attr_reader :real
+
+    # Total time, that is +utime+ + +stime+ + +cutime+ + +cstime+
+    attr_reader :total
+
+    # Label
+    attr_reader :label
+
+    #
+    # Returns an initialized Tms object which has
+    # +utime+ as the user CPU time, +stime+ as the system CPU time,
+    # +cutime+ as the children's user CPU time, +cstime+ as the children's
+    # system CPU time, +real+ as the elapsed real time and +label+ as the label.
+    #
+    def initialize(utime = 0.0, stime = 0.0, cutime = 0.0, cstime = 0.0, real = 0.0, label = nil)
+      @utime, @stime, @cutime, @cstime, @real, @label = utime, stime, cutime, cstime, real, label.to_s
+      @total = @utime + @stime + @cutime + @cstime
+    end
+
+    #
+    # Returns a new Tms object whose times are the sum of the times for this
+    # Tms object, plus the time required to execute the code block (+blk+).
+    #
+    def add(&blk) # :yield:
+      self + Benchmark.measure(&blk)
+    end
+
+    #
+    # An in-place version of #add.
+    #
+    def add!(&blk)
+      t = Benchmark.measure(&blk)
+      @utime  = utime + t.utime
+      @stime  = stime + t.stime
+      @cutime = cutime + t.cutime
+      @cstime = cstime + t.cstime
+      @real   = real + t.real
+      self
+    end
+
+    #
+    # Returns a new Tms object obtained by memberwise summation
+    # of the individual times for this Tms object with those of the other
+    # Tms object.
+    # This method and #/() are useful for taking statistics.
+    #
+    def +(other); memberwise(:+, other) end
+
+    #
+    # Returns a new Tms object obtained by memberwise subtraction
+    # of the individual times for the other Tms object from those of this
+    # Tms object.
+    #
+    def -(other); memberwise(:-, other) end
+
+    #
+    # Returns a new Tms object obtained by memberwise multiplication
+    # of the individual times for this Tms object by _x_.
+    #
+    def *(x); memberwise(:*, x) end
+
+    #
+    # Returns a new Tms object obtained by memberwise division
+    # of the individual times for this Tms object by _x_.
+    # This method and #+() are useful for taking statistics.
+    #
+    def /(x); memberwise(:/, x) end
+
+    #
+    # Returns the contents of this Tms object as
+    # a formatted string, according to a format string
+    # like that passed to Kernel.format. In addition, #format
+    # accepts the following extensions:
+    #
+    # <tt>%u</tt>::     Replaced by the user CPU time, as reported by Tms#utime.
+    # <tt>%y</tt>::     Replaced by the system CPU time, as reported by #stime (Mnemonic: y of "s*y*stem")
+    # <tt>%U</tt>::     Replaced by the children's user CPU time, as reported by Tms#cutime
+    # <tt>%Y</tt>::     Replaced by the children's system CPU time, as reported by Tms#cstime
+    # <tt>%t</tt>::     Replaced by the total CPU time, as reported by Tms#total
+    # <tt>%r</tt>::     Replaced by the elapsed real time, as reported by Tms#real
+    # <tt>%n</tt>::     Replaced by the label string, as reported by Tms#label (Mnemonic: n of "*n*ame")
+    #
+    # If _format_ is not given, FORMAT is used as default value, detailing the
+    # user, system and real elapsed time.
+    #
+    def format(format = nil, *args)
+      str = (format || FORMAT).dup
+      .gsub(/(%[-+.\d]*)n/) { "#{$1}s" % label }
+      .gsub(/(%[-+.\d]*)u/) { "#{$1}f" % utime }
+      .gsub(/(%[-+.\d]*)y/) { "#{$1}f" % stime }
+      .gsub(/(%[-+.\d]*)U/) { "#{$1}f" % cutime }
+      .gsub(/(%[-+.\d]*)Y/) { "#{$1}f" % cstime }
+      .gsub(/(%[-+.\d]*)t/) { "#{$1}f" % total }
+      .gsub(/(%[-+.\d]*)r/) { "(#{$1}f)" % real }
+      format ? str % args : str
+    end
+
+    #
+    # Same as #format.
+    #
+    def to_s
+      format
+    end
+
+    #
+    # Returns a new 6-element array, consisting of the
+    # label, user CPU time, system CPU time, children's
+    # user CPU time, children's system CPU time and elapsed
+    # real time.
+    #
+    def to_a
+      [@label, @utime, @stime, @cutime, @cstime, @real]
+    end
+
+    #
+    # Returns a hash containing the same data as `to_a`.
+    #
+    def to_h
+      {
+        label:  @label,
+        utime:  @utime,
+        stime:  @stime,
+        cutime: @cutime,
+        cstime: @cstime,
+        real:   @real
+      }
+    end
+
+    protected
+
+    #
+    # Returns a new Tms object obtained by memberwise operation +op+
+    # of the individual times for this Tms object with those of the other
+    # Tms object.
+    #
+    # +op+ can be a mathematical operation such as <tt>+</tt>, <tt>-</tt>,
+    # <tt>*</tt>, <tt>/</tt>
+    #
+    def memberwise(op, x)
+      case x
+      when Benchmark::Tms
+        Benchmark::Tms.new(utime.__send__(op, x.utime),
+                           stime.__send__(op, x.stime),
+                           cutime.__send__(op, x.cutime),
+                           cstime.__send__(op, x.cstime),
+                           real.__send__(op, x.real)
+                           )
+      else
+        Benchmark::Tms.new(utime.__send__(op, x),
+                           stime.__send__(op, x),
+                           cutime.__send__(op, x),
+                           cstime.__send__(op, x),
+                           real.__send__(op, x)
+                           )
+      end
+    end
+  end
+
+  # The default caption string (heading above the output times).
+  CAPTION = Benchmark::Tms::CAPTION
+
+  # The default format string used to display times.  See also Benchmark::Tms#format.
+  FORMAT = Benchmark::Tms::FORMAT
+end
diff --git a/stdlib/bigdecimal.rb b/stdlib/bigdecimal.rb
new file mode 100644
index 00000000..4c700c91
--- /dev/null
+++ b/stdlib/bigdecimal.rb
@@ -0,0 +1,238 @@
+class BigDecimal < Numeric; end
+
+require 'js'
+require 'bigdecimal/bignumber'
+
+module Kernel
+  def BigDecimal(initial, digits = 0)
+    bigdecimal = BigDecimal.allocate
+    bigdecimal.initialize(initial, digits)
+    bigdecimal
+  end
+end
+
+def BigDecimal.new(*args, **kwargs)
+  warn 'BigDecimal.new is deprecated; use BigDecimal() method instead.', uplevel: 1
+  BigDecimal(*args, **kwargs)
+end
+
+class BigDecimal < Numeric
+  ROUND_MODE = 256
+
+  # NOTE: the numeric values of the ROUND_* constants
+  # follow BigNumber.js, they are NOT the same as MRI
+  ROUND_UP = 0
+  ROUND_DOWN = 1
+  ROUND_CEILING = 2
+  ROUND_FLOOR = 3
+  ROUND_HALF_UP = 4
+  ROUND_HALF_DOWN = 5
+  ROUND_HALF_EVEN = 6
+
+  SIGN_NaN = 0
+  SIGN_POSITIVE_ZERO = 1
+  SIGN_NEGATIVE_ZERO = -1
+  SIGN_POSITIVE_FINITE = 2
+  SIGN_NEGATIVE_FINITE = -2
+  SIGN_POSITIVE_INFINITE = 3
+  SIGN_NEGATIVE_INFINITE = -3
+
+  def self.limit(digits = nil)
+    @digits = digits if digits
+    @digits
+  end
+
+  def self.mode(mode, value = nil)
+    case mode
+    when ROUND_MODE
+      @round_mode = value if value
+      @round_mode || ROUND_HALF_UP
+    end
+  end
+
+  attr_reader :bignumber
+
+  def initialize(initial, digits = 0)
+    @bignumber = JS.new(BigNumber, initial)
+  end
+
+  def ==(other)
+    case other
+    when self.class
+      bignumber.JS.equals(other.bignumber)
+    when Number
+      bignumber.JS.equals(other)
+    else
+      false
+    end
+  end
+
+  def <=>(other)
+    result = case other
+             when self.class
+               bignumber.JS.comparedTo(other.bignumber)
+             when Number
+               bignumber.JS.comparedTo(other)
+             end
+    `#{result} === null ? nil : #{result}`
+  end
+
+  def <(other)
+    return false if nan? || other && other.nan?
+    super
+  end
+
+  def <=(other)
+    return false if nan? || other && other.nan?
+    super
+  end
+
+  def >(other)
+    return false if nan? || other && other.nan?
+    super
+  end
+
+  def >=(other)
+    return false if nan? || other && other.nan?
+    super
+  end
+
+  def abs
+    self.class.new(bignumber.JS.abs)
+  end
+
+  def add(other, digits = 0)
+    if digits.nil?
+      raise TypeError, 'wrong argument type nil (expected Fixnum)'
+    end
+
+    if digits < 0
+      raise ArgumentError, 'argument must be positive'
+    end
+
+    other, _ = coerce(other)
+
+    result = bignumber.JS.plus(other.bignumber)
+
+    if digits > 0
+      result = result.JS.toDigits(digits, self.class.mode(ROUND_MODE))
+    end
+
+    self.class.new(result)
+  end
+
+  def ceil(n = nil)
+    unless bignumber.JS.isFinite
+      raise FloatDomainError, "Computation results to 'Infinity'"
+    end
+
+    if n.nil?
+      bignumber.JS.round(0, ROUND_CEILING).JS.toNumber
+    elsif n >= 0
+      self.class.new(bignumber.JS.round(n, ROUND_CEILING))
+    else
+      self.class.new(bignumber.JS.round(0, ROUND_CEILING))
+    end
+  end
+
+  def coerce(other)
+    case other
+    when self.class
+      [other, self]
+    when Number
+      [self.class.new(other), self]
+    else
+      raise TypeError, "#{other.class} can't be coerced into #{self.class}"
+    end
+  end
+
+  def div(other, digits = nil)
+    return self / other if digits == 0
+
+    other, _ = coerce(other)
+
+    if nan? || other.nan?
+      raise FloatDomainError, "Computation results to 'NaN'(Not a Number)"
+    end
+
+    if digits.nil?
+      if other.zero?
+        raise ZeroDivisionError, 'divided by 0'
+      end
+
+      if infinite?
+        raise FloatDomainError, "Computation results to 'Infinity'"
+      end
+
+      return self.class.new(bignumber.JS.dividedToIntegerBy(other.bignumber))
+    end
+
+    self.class.new(bignumber.JS.dividedBy(other.bignumber).JS.round(digits, self.class.mode(ROUND_MODE)))
+  end
+
+  def finite?
+    bignumber.JS.isFinite
+  end
+
+  def infinite?
+    return nil if finite? || nan?
+    bignumber.JS.isNegative ? -1 : 1
+  end
+
+  def minus(other)
+    other, _ = coerce(other)
+    self.class.new(bignumber.JS.minus(other.bignumber))
+  end
+
+  def mult(other, digits = nil)
+    other, _ = coerce(other)
+
+    if digits.nil?
+      return self.class.new(bignumber.JS.times(other.bignumber))
+    end
+
+    self.class.new(bignumber.JS.times(other.bignumber).JS.round(digits, self.class.mode(ROUND_MODE)))
+  end
+
+  def nan?
+    bignumber.JS.isNaN
+  end
+
+  def quo(other)
+    other, _ = coerce(other)
+    self.class.new(bignumber.JS.dividedBy(other.bignumber))
+  end
+
+  def sign
+    if bignumber.JS.isNaN
+      return SIGN_NaN
+    end
+    if bignumber.JS.isZero
+      return bignumber.JS.isNegative ? SIGN_NEGATIVE_ZERO : SIGN_POSITIVE_ZERO
+    end
+  end
+
+  def sub(other, precision)
+    other, _ = coerce(other)
+    self.class.new(bignumber.JS.minus(other.bignumber))
+  end
+
+  def to_f
+    bignumber.JS.toNumber
+  end
+
+  def to_s(s = '')
+    bignumber.JS.toString
+  end
+
+  def zero?
+    bignumber.JS.isZero
+  end
+
+  alias === ==
+  alias + add
+  alias - minus
+  alias * mult
+  alias / quo
+  alias inspect to_s
+end
diff --git a/stdlib/bigdecimal/bignumber.js.rb b/stdlib/bigdecimal/bignumber.js.rb
new file mode 100644
index 00000000..1a514075
--- /dev/null
+++ b/stdlib/bigdecimal/bignumber.js.rb
@@ -0,0 +1,13 @@
+class BigDecimal < Numeric
+  %x{
+    var define = function (f) { Opal.const_set(self, 'BigNumber', f()); };
+    define.amd = true;
+    /* global Uint32Array */
+
+    /* eslint-disable */
+    /* bignumber.js v2.1.4 https://github.com/MikeMcl/bignumber.js/LICENCE */
+    !function(e){"use strict";function n(e){function E(e,n){var t,r,i,o,u,s,f=this;if(!(f instanceof E))return j&&L(26,"constructor call without new",e),new E(e,n);if(null!=n&&H(n,2,64,M,"base")){if(n=0|n,s=e+"",10==n)return f=new E(e instanceof E?e:s),U(f,P+f.e+1,k);if((o="number"==typeof e)&&0*e!=0||!new RegExp("^-?"+(t="["+N.slice(0,n)+"]+")+"(?:\\."+t+")?$",37>n?"i":"").test(s))return h(f,s,o,n);o?(f.s=0>1/e?(s=s.slice(1),-1):1,j&&s.replace(/^0\.0*|\./,"").length>15&&L(M,v,e),o=!1):f.s=45===s.charCodeAt(0)?(s=s.slice(1),-1):1,s=D(s,10,n,f.s)}else{if(e instanceof E)return f.s=e.s,f.e=e.e,f.c=(e=e.c)?e.slice():e,void(M=0);if((o="number"==typeof e)&&0*e==0){if(f.s=0>1/e?(e=-e,-1):1,e===~~e){for(r=0,i=e;i>=10;i/=10,r++);return f.e=r,f.c=[e],void(M=0)}s=e+""}else{if(!g.test(s=e+""))return 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module&&module.exports){if(module.exports=n(),!a)try{a=require("crypto")}catch(E){}}else e||(e="undefined"!=typeof self?self:Function("return this")()),e.BigNumber=n()}(this);
+    /* eslint-enable */
+
+  }
+end
diff --git a/stdlib/bigdecimal/util.rb b/stdlib/bigdecimal/util.rb
new file mode 100644
index 00000000..52017cc2
--- /dev/null
+++ b/stdlib/bigdecimal/util.rb
@@ -0,0 +1,148 @@
+# frozen_string_literal: false
+#
+#--
+# bigdecimal/util extends various native classes to provide the #to_d method,
+# and provides BigDecimal#to_d and BigDecimal#to_digits.
+#++
+
+require 'bigdecimal'
+
+class Integer < Numeric
+  # call-seq:
+  #     int.to_d  -> bigdecimal
+  #
+  # Returns the value of +int+ as a BigDecimal.
+  #
+  #     require 'bigdecimal'
+  #     require 'bigdecimal/util'
+  #
+  #     42.to_d   # => 0.42e2
+  #
+  # See also BigDecimal::new.
+  #
+  def to_d
+    BigDecimal(self)
+  end
+end
+
+
+class Float < Numeric
+  # call-seq:
+  #     float.to_d             -> bigdecimal
+  #     float.to_d(precision)  -> bigdecimal
+  #
+  # Returns the value of +float+ as a BigDecimal.
+  # The +precision+ parameter is used to determine the number of
+  # significant digits for the result (the default is Float::DIG).
+  #
+  #     require 'bigdecimal'
+  #     require 'bigdecimal/util'
+  #
+  #     0.5.to_d         # => 0.5e0
+  #     1.234.to_d(2)    # => 0.12e1
+  #
+  # See also BigDecimal::new.
+  #
+  def to_d(precision = Float::DIG)
+    BigDecimal(self, precision)
+  end
+end
+
+
+class String
+  # call-seq:
+  #     str.to_d  -> bigdecimal
+  #
+  # Returns the result of interpreting leading characters in +str+
+  # as a BigDecimal.
+  #
+  #     require 'bigdecimal'
+  #     require 'bigdecimal/util'
+  #
+  #     "0.5".to_d             # => 0.5e0
+  #     "123.45e1".to_d        # => 0.12345e4
+  #     "45.67 degrees".to_d   # => 0.4567e2
+  #
+  # See also BigDecimal::new.
+  #
+  def to_d
+    BigDecimal(`#{self}.replace("_", '').replace(/ .*$/,'')`)
+  end
+end
+
+
+class BigDecimal < Numeric
+  # call-seq:
+  #     a.to_digits -> string
+  #
+  # Converts a BigDecimal to a String of the form "nnnnnn.mmm".
+  # This method is deprecated; use BigDecimal#to_s("F") instead.
+  #
+  #     require 'bigdecimal/util'
+  #
+  #     d = BigDecimal("3.14")
+  #     d.to_digits                  # => "3.14"
+  #
+  def to_digits
+    if nan? || infinite? || zero?
+      to_s
+    else
+      i          = to_i.to_s
+      _, f, _, z = frac.split
+      i + '.' + ('0' * -z) + f
+    end
+  end
+
+  # call-seq:
+  #     a.to_d -> bigdecimal
+  #
+  # Returns self.
+  #
+  #     require 'bigdecimal/util'
+  #
+  #     d = BigDecimal("3.14")
+  #     d.to_d                       # => 0.314e1
+  #
+  def to_d
+    self
+  end
+end
+
+
+class Rational < Numeric
+  # call-seq:
+  #     rat.to_d(precision)  -> bigdecimal
+  #
+  # Returns the value as a BigDecimal.
+  #
+  # The required +precision+ parameter is used to determine the number of
+  # significant digits for the result.
+  #
+  #     require 'bigdecimal'
+  #     require 'bigdecimal/util'
+  #
+  #     Rational(22, 7).to_d(3)   # => 0.314e1
+  #
+  # See also BigDecimal::new.
+  #
+  def to_d(precision)
+    BigDecimal(self, precision)
+  end
+end
+
+
+class NilClass
+  # call-seq:
+  #     nil.to_d -> bigdecimal
+  #
+  # Returns nil represented as a BigDecimal.
+  #
+  #     require 'bigdecimal'
+  #     require 'bigdecimal/util'
+  #
+  #     nil.to_d   # => 0.0
+  #
+  def to_d
+    BigDecimal(0)
+  end
+end
diff --git a/stdlib/buffer.rb b/stdlib/buffer.rb
new file mode 100644
index 00000000..666500d3
--- /dev/null
+++ b/stdlib/buffer.rb
@@ -0,0 +1,46 @@
+require 'native'
+require 'buffer/array'
+require 'buffer/view'
+
+class Buffer
+  include Native::Wrapper
+
+  def self.supported?
+    !$$[:ArrayBuffer].nil?
+  end
+
+  def self.name_for(bits, type)
+    part = case type
+           when :unsigned then 'Uint'
+           when :signed   then 'Int'
+           when :float    then 'Float'
+           end
+    "#{part}#{bits}"
+  end
+
+  def initialize(size, bits = 8)
+    if native?(size)
+      super(size)
+    else
+      super(`new ArrayBuffer(size * (bits / 8))`)
+    end
+  end
+
+  def length
+    `#{@native}.byteLength`
+  end
+
+  def to_a(bits = 8, type = :unsigned)
+    Array.new(self, bits, type)
+  end
+
+  def view(offset = nil, length = nil)
+    View.new(self, offset, length)
+  end
+
+  def to_s
+    to_a.to_a.pack('c*')
+  end
+
+  alias size length
+end
diff --git a/stdlib/buffer/array.rb b/stdlib/buffer/array.rb
new file mode 100644
index 00000000..da4068c2
--- /dev/null
+++ b/stdlib/buffer/array.rb
@@ -0,0 +1,66 @@
+class Buffer
+  class Array
+    include Native::Wrapper
+
+    def self.for(bits, type)
+      $$["#{Buffer.name_for bits, type}Array"]
+    end
+
+    include Enumerable
+
+    attr_reader :buffer, :type
+
+    def initialize(buffer, bits = nil, type = nil)
+      if Native == buffer
+        super(buffer)
+      else
+        %x{
+          var klass = #{Array.for(bits, type)};
+
+          #{super(`new klass(#{buffer.to_n})`)}
+        }
+      end
+
+      @buffer = buffer
+      @type   = type
+    end
+
+    def bits
+      `#{@native}.BYTES_PER_ELEMENT * 8`
+    end
+
+    def [](index, offset = nil)
+      offset ? `#{@native}.subarray(index, offset)` : `#{@native}[index]`
+    end
+
+    def []=(index, value)
+      `#{@native}[index] = value`
+    end
+
+    def bytesize
+      `#{@native}.byteLength`
+    end
+
+    def each
+      return enum_for :each unless block_given?
+
+      %x{
+        for (var i = 0, length = #{@native}.length; i < length; i++) {
+          #{yield `#{@native}[i]`}
+        }
+      }
+
+      self
+    end
+
+    def length
+      `#{@native}.length`
+    end
+
+    def merge!(other, offset = undefined)
+      `#{@native}.set(#{other.to_n}, offset)`
+    end
+
+    alias size length
+  end
+end
diff --git a/stdlib/buffer/view.rb b/stdlib/buffer/view.rb
new file mode 100644
index 00000000..2f7eeae9
--- /dev/null
+++ b/stdlib/buffer/view.rb
@@ -0,0 +1,108 @@
+class Buffer
+  class View
+    include Native::Wrapper
+
+    def self.supported?
+      !$$[:DataView].nil?
+    end
+
+    attr_reader :buffer, :offset
+
+    def initialize(buffer, offset = nil, length = nil)
+      if native?(buffer)
+        super(buffer)
+      elsif offset && length
+        super(`new DataView(#{buffer.to_n}, #{offset.to_n}, #{length.to_n})`)
+      elsif offset
+        super(`new DataView(#{buffer.to_n}, #{offset.to_n})`)
+      else
+        super(`new DataView(#{buffer.to_n})`)
+      end
+
+      @buffer = buffer
+      @offset = offset
+    end
+
+    def length
+      `#{@native}.byteLength`
+    end
+
+    def get(offset, bits = 8, type = :unsigned, little = false)
+      `#{@native}["get" + #{Buffer.name_for bits, type}](offset, little)`
+    end
+
+    alias [] get
+
+    def set(offset, value, bits = 8, type = :unsigned, little = false)
+      `#{@native}["set" + #{Buffer.name_for bits, type}](offset, value, little)`
+    end
+
+    alias []= set
+
+    def get_int8(offset, little = false)
+      `#{@native}.getInt8(offset, little)`
+    end
+
+    def set_int8(offset, value, little = false)
+      `#{@native}.setInt8(offset, value, little)`
+    end
+
+    def get_uint8(offset, little = false)
+      `#{@native}.getUint8(offset, little)`
+    end
+
+    def set_uint8(offset, value, little = false)
+      `#{@native}.setUint8(offset, value, little)`
+    end
+
+    def get_int16(offset, little = false)
+      `#{@native}.getInt16(offset, little)`
+    end
+
+    def set_int16(offset, value, little = false)
+      `#{@native}.setInt16(offset, value, little)`
+    end
+
+    def get_uint16(offset, little = false)
+      `#{@native}.getUint16(offset, little)`
+    end
+
+    def set_uint16(offset, value, little = false)
+      `#{@native}.setUint16(offset, value, little)`
+    end
+
+    def get_int32(offset, little = false)
+      `#{@native}.getInt32(offset, little)`
+    end
+
+    def set_int32(offset, value, little = false)
+      `#{@native}.setInt32(offset, value, little)`
+    end
+
+    def get_uint32(offset, little = false)
+      `#{@native}.getUint32(offset, little)`
+    end
+
+    def set_uint32(offset, value, little = false)
+      `#{@native}.setUint32(offset, value, little)`
+    end
+
+    def get_float32(offset, little = false)
+      `#{@native}.getFloat32(offset, little)`
+    end
+
+    def set_float32(offset, value, little = false)
+      `#{@native}.setFloat32(offset, value, little)`
+    end
+
+    def get_float64(offset, little = false)
+      `#{@native}.getFloat64(offset, little)`
+    end
+
+    def set_float64(offset, value, little = false)
+      `#{@native}.setFloat64(offset, value, little)`
+    end
+
+    alias size length
+  end
+end
diff --git a/stdlib/console.rb b/stdlib/console.rb
new file mode 100644
index 00000000..a0493abf
--- /dev/null
+++ b/stdlib/console.rb
@@ -0,0 +1,94 @@
+require 'native'
+
+# Manipulate the browser console.
+#
+# @see https://developer.mozilla.org/en-US/docs/Web/API/console
+class Console
+  include Native::Wrapper
+
+  # Clear the console.
+  def clear
+    `#{@native}.clear()`
+  end
+
+  # Print a stacktrace from the call site.
+  def trace
+    `#{@native}.trace()`
+  end
+
+  # Log the passed objects based on an optional initial format.
+  def log(*args)
+    `#{@native}.log.apply(#{@native}, args)`
+  end
+
+  # Log the passed objects based on an optional initial format as informational
+  # log.
+  def info(*args)
+    `#{@native}.info.apply(#{@native}, args)`
+  end
+
+  # Log the passed objects based on an optional initial format as warning.
+  def warn(*args)
+    `#{@native}.warn.apply(#{@native}, args)`
+  end
+
+  # Log the passed objects based on an optional initial format as error.
+  def error(*args)
+    `#{@native}.error.apply(#{@native}, args)`
+  end
+
+  # Time the given block with the given label.
+  def time(label, &block)
+    raise ArgumentError, 'no block given' unless block
+
+    `#{@native}.time(label)`
+
+    begin
+      if block.arity == 0
+        instance_exec(&block)
+      else
+        yield(self)
+      end
+    ensure
+      `#{@native}.timeEnd()`
+    end
+  end
+
+  # Group the given block.
+  def group(*args, &block)
+    raise ArgumentError, 'no block given' unless block
+
+    `#{@native}.group.apply(#{@native}, args)`
+
+    begin
+      if block.arity == 0
+        instance_exec(&block)
+      else
+        yield(self)
+      end
+    ensure
+      `#{@native}.groupEnd()`
+    end
+  end
+
+  # Group the given block but collapse it.
+  def group!(*args, &block)
+    return unless block_given?
+
+    `#{@native}.groupCollapsed.apply(#{@native}, args)`
+
+    begin
+      if block.arity == 0
+        instance_exec(&block)
+      else
+        yield(self)
+      end
+    ensure
+      `#{@native}.groupEnd()`
+    end
+  end
+end
+
+if defined?(`Opal.global.console`)
+  $console = Console.new(`Opal.global.console`)
+end
diff --git a/stdlib/date.rb b/stdlib/date.rb
new file mode 100644
index 00000000..dc342b8f
--- /dev/null
+++ b/stdlib/date.rb
@@ -0,0 +1,545 @@
+require 'forwardable'
+require 'date/infinity'
+require 'time'
+
+class Date
+  include Comparable
+  extend Forwardable
+
+  JULIAN          = Infinity.new
+  GREGORIAN       = -Infinity.new
+  ITALY           = 2_299_161 # 1582-10-15
+  ENGLAND         = 2_361_222 # 1752-09-14
+  MONTHNAMES      = [nil] + %w[January February March April May June July August September October November December]
+  ABBR_MONTHNAMES = %w[jan feb mar apr may jun jul aug sep oct nov dec]
+  DAYNAMES        = %w[Sunday Monday Tuesday Wednesday Thursday Friday Saturday]
+  ABBR_DAYNAMES   = %w[Sun Mon Tue Wed Thu Fri Sat]
+
+  class << self
+    def wrap(native)
+      instance = allocate
+      `#{instance}.start = #{ITALY}`
+      `#{instance}.date = #{native}`
+      instance
+    end
+
+    def parse(string, comp = true)
+      %x{
+        var current_date = new Date();
+
+        var current_day = current_date.getDate(),
+            current_month = current_date.getMonth(),
+            current_year = current_date.getFullYear(),
+            current_wday = current_date.getDay(),
+            full_month_name_regexp = #{MONTHNAMES.compact.join('|')};
+
+        function match1(match) { return match[1]; }
+        function match2(match) { return match[2]; }
+        function match3(match) { return match[3]; }
+        function match4(match) { return match[4]; }
+
+        // Converts passed short year (0..99)
+        // to a 4-digits year in the range (1969..2068)
+        function fromShortYear(fn) {
+          return function(match) {
+            var short_year = fn(match);
+
+            if (short_year >= 69) {
+              short_year += 1900;
+            } else {
+              short_year += 2000;
+            }
+            return short_year;
+          }
+        }
+
+        // Converts month abbr (nov) to a month number
+        function fromMonthAbbr(fn) {
+          return function(match) {
+            var abbr = fn(match).toLowerCase();
+            return #{ABBR_MONTHNAMES}.indexOf(abbr) + 1;
+          }
+        }
+
+        function toInt(fn) {
+          return function(match) {
+            var value = fn(match);
+            return parseInt(value, 10);
+          }
+        }
+
+        // Depending on the 'comp' value appends 20xx to a passed year
+        function to2000(fn) {
+          return function(match) {
+            var value = fn(match);
+            if (comp) {
+              return value + 2000;
+            } else {
+              return value;
+            }
+          }
+        }
+
+        // Converts passed week day name to a day number
+        function fromDayName(fn) {
+          return function(match) {
+            var dayname = fn(match),
+                wday = #{DAYNAMES.map(&:downcase)}.indexOf(#{`dayname`.downcase});
+
+            return current_day - current_wday + wday;
+          }
+        }
+
+        // Converts passed month name to a month number
+        function fromFullMonthName(fn) {
+          return function(match) {
+            var month_name = fn(match);
+            return #{MONTHNAMES.compact.map(&:downcase)}.indexOf(#{`month_name`.downcase}) + 1;
+          }
+        }
+
+        var rules = [
+          {
+            // DD as month day number
+            regexp: /^(\d{2})$/,
+            year: current_year,
+            month: current_month,
+            day: toInt(match1)
+          },
+          {
+            // DDD as year day number
+            regexp: /^(\d{3})$/,
+            year: current_year,
+            month: 0,
+            day: toInt(match1)
+          },
+          {
+            // MMDD as month and day
+            regexp: /^(\d{2})(\d{2})$/,
+            year: current_year,
+            month: toInt(match1),
+            day: toInt(match2)
+          },
+          {
+            // YYDDD as year and day number in 1969--2068
+            regexp: /^(\d{2})(\d{3})$/,
+            year: fromShortYear(toInt(match1)),
+            month: 0,
+            day: toInt(match2)
+          },
+          {
+            // YYMMDD as year, month and day in 1969--2068
+            regexp: /^(\d{2})(\d{2})(\d{2})$/,
+            year: fromShortYear(toInt(match1)),
+            month: toInt(match2),
+            day: toInt(match3)
+          },
+          {
+            // YYYYDDD as year and day number
+            regexp: /^(\d{4})(\d{3})$/,
+            year: toInt(match1),
+            month: 0,
+            day: toInt(match2)
+          },
+          {
+            // YYYYMMDD as year, month and day number
+            regexp: /^(\d{4})(\d{2})(\d{2})$/,
+            year: toInt(match1),
+            month: toInt(match2),
+            day: toInt(match3)
+          },
+          {
+            // mmm YYYY
+            regexp: /^([a-z]{3})[\s\.\/\-](\d{3,4})$/,
+            year: toInt(match2),
+            month: fromMonthAbbr(match1),
+            day: 1
+          },
+          {
+            // DD mmm YYYY
+            regexp: /^(\d{1,2})[\s\.\/\-]([a-z]{3})[\s\.\/\-](\d{3,4})$/i,
+            year: toInt(match3),
+            month: fromMonthAbbr(match2),
+            day: toInt(match1)
+          },
+          {
+            // mmm DD YYYY
+            regexp: /^([a-z]{3})[\s\.\/\-](\d{1,2})[\s\.\/\-](\d{3,4})$/i,
+            year: toInt(match3),
+            month: fromMonthAbbr(match1),
+            day: toInt(match2)
+          },
+          {
+            // YYYY mmm DD
+            regexp: /^(\d{3,4})[\s\.\/\-]([a-z]{3})[\s\.\/\-](\d{1,2})$/i,
+            year: toInt(match1),
+            month: fromMonthAbbr(match2),
+            day: toInt(match3)
+          },
+          {
+            // YYYY-MM-DD YYYY/MM/DD YYYY.MM.DD
+            regexp: /^(\-?\d{3,4})[\s\.\/\-](\d{1,2})[\s\.\/\-](\d{1,2})$/,
+            year: toInt(match1),
+            month: toInt(match2),
+            day: toInt(match3)
+          },
+          {
+            // YY-MM-DD
+            regexp: /^(\d{2})[\s\.\/\-](\d{1,2})[\s\.\/\-](\d{1,2})$/,
+            year: to2000(toInt(match1)),
+            month: toInt(match2),
+            day: toInt(match3)
+          },
+          {
+            // DD-MM-YYYY
+            regexp: /^(\d{1,2})[\s\.\/\-](\d{1,2})[\s\.\/\-](\-?\d{3,4})$/,
+            year: toInt(match3),
+            month: toInt(match2),
+            day: toInt(match1)
+          },
+          {
+            // ddd
+            regexp: new RegExp("^(" + #{DAYNAMES.join('|')} + ")$", 'i'),
+            year: current_year,
+            month: current_month,
+            day: fromDayName(match1)
+          },
+          {
+            // monthname daynumber YYYY
+            regexp: new RegExp("^(" + full_month_name_regexp + ")[\\s\\.\\/\\-](\\d{1,2})(th|nd|rd)[\\s\\.\\/\\-](\\-?\\d{3,4})$", "i"),
+            year: toInt(match4),
+            month: fromFullMonthName(match1),
+            day: toInt(match2)
+          },
+          {
+            // monthname daynumber
+            regexp: new RegExp("^(" + full_month_name_regexp + ")[\\s\\.\\/\\-](\\d{1,2})(th|nd|rd)", "i"),
+            year: current_year,
+            month: fromFullMonthName(match1),
+            day: toInt(match2)
+          },
+          {
+            // daynumber monthname YYYY
+            regexp: new RegExp("^(\\d{1,2})(th|nd|rd)[\\s\\.\\/\\-](" + full_month_name_regexp + ")[\\s\\.\\/\\-](\\-?\\d{3,4})$", "i"),
+            year: toInt(match4),
+            month: fromFullMonthName(match3),
+            day: toInt(match1)
+          },
+          {
+            // YYYY monthname daynumber
+            regexp: new RegExp("^(\\-?\\d{3,4})[\\s\\.\\/\\-](" + full_month_name_regexp + ")[\\s\\.\\/\\-](\\d{1,2})(th|nd|rd)$", "i"),
+            year: toInt(match1),
+            month: fromFullMonthName(match2),
+            day: toInt(match3)
+          }
+        ]
+
+        var rule, i, match;
+
+        for (i = 0; i < rules.length; i++) {
+          rule = rules[i];
+          match = rule.regexp.exec(string);
+          if (match) {
+            var year = rule.year;
+            if (typeof(year) === 'function') {
+              year = year(match);
+            }
+
+            var month = rule.month;
+            if (typeof(month) === 'function') {
+              month = month(match) - 1
+            }
+
+            var day = rule.day;
+            if (typeof(day) === 'function') {
+              day = day(match);
+            }
+
+            var result = new Date(year, month, day);
+
+            // an edge case, JS can't handle 'new Date(1)', minimal year is 1970
+            if (year >= 0 && year <= 1970) {
+              result.setFullYear(year);
+            }
+
+            return #{wrap `result`};
+          }
+        }
+      }
+      raise ArgumentError, 'invalid date'
+    end
+
+    def today
+      wrap `new Date()`
+    end
+
+    def gregorian_leap?(year)
+      `(new Date(#{year}, 1, 29).getMonth()-1) === 0`
+    end
+
+    alias civil new
+  end
+
+  def initialize(year = -4712, month = 1, day = 1, start = ITALY)
+    %x{
+      // Because of Gregorian reform calendar goes from 1582-10-04 to 1582-10-15.
+      // All days in between end up as 4 october.
+      if (year === 1582 && month === 10 && day > 4 && day < 15) {
+        day = 4;
+      }
+    }
+
+    @date = `new Date(year, month - 1, day)`
+    @start = start
+  end
+
+  attr_reader :start
+
+  def <=>(other)
+    %x{
+      if (other.$$is_number) {
+        return #{jd <=> other}
+      }
+
+      if (#{::Date === other}) {
+        var a = #{@date}, b = #{other}.date;
+        if (!Opal.is_a(#{self}, #{::DateTime})) a.setHours(0, 0, 0, 0);
+        if (!Opal.is_a(#{other}, #{::DateTime})) b.setHours(0, 0, 0, 0);
+
+        if (a < b) {
+          return -1;
+        }
+        else if (a > b) {
+          return 1;
+        }
+        else {
+          return 0;
+        }
+      } else {
+        return nil;
+      }
+    }
+  end
+
+  def >>(n)
+    `if (!n.$$is_number) #{raise ::TypeError}`
+
+    self << -n
+  end
+
+  def <<(n)
+    `if (!n.$$is_number) #{raise ::TypeError}`
+
+    prev_month(n)
+  end
+
+  def clone
+    date = Date.wrap(@date.dup)
+    `date.start = #{@start}`
+    date
+  end
+
+  def_delegators :@date, :sunday?, :monday?, :tuesday?, :wednesday?, :thursday?, :friday?, :saturday?,
+    :day, :month, :year, :wday, :yday
+
+  alias mday day
+  alias mon month
+
+  def jd
+    %x{
+    //Adapted from http://www.physics.sfasu.edu/astro/javascript/julianday.html
+
+    var mm = #{@date}.getMonth() + 1,
+        dd = #{@date}.getDate(),
+        yy = #{@date}.getFullYear(),
+        hr = 12, mn = 0, sc = 0,
+        ggg, s, a, j1, jd;
+
+    hr = hr + (mn / 60) + (sc/3600);
+
+    ggg = 1;
+    if (yy <= 1585) {
+      ggg = 0;
+    }
+
+    jd = -1 * Math.floor(7 * (Math.floor((mm + 9) / 12) + yy) / 4);
+
+    s = 1;
+    if ((mm - 9) < 0) {
+      s =- 1;
+    }
+
+    a = Math.abs(mm - 9);
+    j1 = Math.floor(yy + s * Math.floor(a / 7));
+    j1 = -1 * Math.floor((Math.floor(j1 / 100) + 1) * 3 / 4);
+
+    jd = jd + Math.floor(275 * mm / 9) + dd + (ggg * j1);
+    jd = jd + 1721027 + 2 * ggg + 367 * yy - 0.5;
+    jd = jd + (hr / 24);
+
+    return jd;
+    }
+  end
+
+  def julian?
+    `#{@date} < new Date(1582, 10 - 1, 15, 12)`
+  end
+
+  def new_start(start)
+    new_date = clone
+    `new_date.start = start`
+    new_date
+  end
+
+  def next
+    self + 1
+  end
+
+  def -(date)
+    %x{
+      if (date.date) {
+        return Math.round((#{@date} - #{date}.date) / (1000 * 60 * 60 * 24));
+      }
+    }
+    prev_day(date)
+  end
+
+  def +(date)
+    next_day(date)
+  end
+
+  def prev_day(n = 1)
+    %x{
+      if (n.$$is_number) {
+        var result = #{clone};
+        result.date.setDate(#{@date}.getDate() - n);
+        return result;
+      }
+      else {
+        #{raise ::TypeError};
+      }
+    }
+  end
+
+  def next_day(n = 1)
+    `if (!n.$$is_number) #{raise ::TypeError}`
+    prev_day(-n)
+  end
+
+  def prev_month(n = 1)
+    %x{
+      if (!n.$$is_number) #{raise ::TypeError}
+      var result = #{clone}, date = result.date, cur = date.getDate();
+      date.setDate(1);
+      date.setMonth(date.getMonth() - n);
+      date.setDate(Math.min(cur, #{Date._days_in_month(`date.getFullYear()`, `date.getMonth()`)}));
+      return result;
+    }
+  end
+
+  def next_month(n = 1)
+    `if (!n.$$is_number) #{raise ::TypeError}`
+    prev_month(-n)
+  end
+
+  def prev_year(years = 1)
+    `if (!years.$$is_number) #{raise ::TypeError}`
+    self.class.new(year - years, month, day)
+  end
+
+  def next_year(years = 1)
+    `if (!years.$$is_number) #{raise ::TypeError}`
+    prev_year(-years)
+  end
+
+  def strftime(format = '')
+    %x{
+      if (format == '') {
+        return #{to_s};
+      }
+
+      return #{@date.strftime(format)}
+    }
+  end
+
+  def to_s
+    %x{
+      var d = #{@date}, year = d.getFullYear(), month = d.getMonth() + 1, day = d.getDate();
+      if (month < 10) { month = '0' + month; }
+      if (day < 10) { day = '0' + day; }
+      return year + '-' + month + '-' + day;
+    }
+  end
+
+  def to_time
+    Time.new(year, month, day)
+  end
+
+  def to_date
+    self
+  end
+
+  def to_datetime
+    DateTime.new(year, month, day)
+  end
+
+  def to_n
+    @date
+  end
+
+  def step(limit, step = 1, &block)
+    steps_count = (limit - self).to_i
+
+    steps = if steps_count * step < 0
+              []
+            elsif steps_count < 0
+              (0..-steps_count).step(step.abs).map(&:-@).reverse
+            else
+              (0..steps_count).step(step.abs)
+            end
+
+    result = steps.map { |i| self + i }
+
+
+    if block_given?
+      result.each { |i| yield(i) }
+      self
+    else
+      result
+    end
+  end
+
+  def upto(max, &block)
+    step(max, 1, &block)
+  end
+
+  def downto(min, &block)
+    step(min, -1, &block)
+  end
+
+  def cwday
+    `#{@date}.getDay() || 7`
+  end
+
+  def cweek
+    %x{
+      var d = new Date(#{@date});
+      d.setHours(0,0,0);
+      d.setDate(d.getDate()+4-(d.getDay()||7));
+      return Math.ceil((((d-new Date(d.getFullYear(),0,1))/8.64e7)+1)/7);
+    }
+  end
+
+  def self._days_in_month(year, month)
+    %x{
+      var leap = ((year % 4 === 0 && year % 100 !== 0) || year % 400 === 0);
+      return [31, (leap ? 29 : 28), 31, 30, 31, 30, 31, 31, 30, 31, 30, 31][month];
+    }
+  end
+
+  alias eql? ==
+  alias succ next
+end
+
+require 'date/date_time'
+require 'date/formatters'
diff --git a/stdlib/date/date_time.rb b/stdlib/date/date_time.rb
new file mode 100644
index 00000000..977ad522
--- /dev/null
+++ b/stdlib/date/date_time.rb
@@ -0,0 +1,71 @@
+class DateTime < Date
+  class << self
+    def now
+      wrap Time.now
+    end
+
+    def parse(str)
+      wrap Time.parse(str)
+    end
+  end
+
+  def initialize(year = -4712, month = 1, day = 1, hours = 0, minutes = 0, seconds = 0, offset = 0, start = ITALY)
+    %x{
+      // Because of Gregorian reform calendar goes from 1582-10-04 to 1582-10-15.
+      // All days in between end up as 4 october.
+      if (year === 1582 && month === 10 && day > 4 && day < 15) {
+        day = 4;
+      }
+    }
+
+    @date = Time.new(year, month, day, hours, minutes, seconds, offset)
+    @start = start
+  end
+
+  def_delegators :@date, :min, :hour, :sec
+  alias minute min
+  alias second sec
+
+  def sec_fraction
+    @date.usec / 1_000_000r
+  end
+
+  alias second_fraction sec_fraction
+
+  def offset
+    @date.gmt_offset / (24 * 3600r)
+  end
+
+  def +(other)
+    ::DateTime.wrap @date + other
+  end
+
+  def -(other)
+    `if (Opal.is_a(other, #{::Date})) other = other.date`
+    result = @date - other
+    if result.is_a? ::Time
+      ::DateTime.wrap result
+    else
+      result
+    end
+  end
+
+  def new_offset(offset)
+    new_date = clone
+    offset = Time._parse_offset(offset)
+    `new_date.date.timezone = offset`
+    new_date
+  end
+
+  def to_datetime
+    self
+  end
+
+  def to_time
+    @date.dup
+  end
+
+  def to_date
+    Date.new(year, month, day)
+  end
+end
diff --git a/stdlib/date/formatters.rb b/stdlib/date/formatters.rb
new file mode 100644
index 00000000..520764a8
--- /dev/null
+++ b/stdlib/date/formatters.rb
@@ -0,0 +1,28 @@
+class Date
+  def self.def_formatter(*args, **kwargs)
+    Time.def_formatter(*args, **kwargs, on: self)
+  end
+
+  def_formatter :asctime, '%c'
+  alias ctime asctime
+  def_formatter :iso8601, '%F'
+  alias xmlschema iso8601
+  def_formatter :rfc3339, '%FT%T%:z'
+  def_formatter :rfc2822, '%a, %-d %b %Y %T %z'
+  alias rfc822 rfc2822
+  def_formatter :httpdate, '%a, %d %b %Y %T GMT', utc: true
+  def_formatter :jisx0301, '%J'
+
+  alias to_s iso8601
+end
+
+class DateTime < Date
+  def_formatter :xmlschema, '%FT%T', fractions: true, tz_format: '%:z'
+  alias iso8601 xmlschema
+  alias rfc3339 xmlschema
+  def_formatter :jisx0301, '%JT%T', fractions: true, tz_format: '%:z'
+
+  alias to_s xmlschema
+
+  def_formatter :zone, '%:z'
+end
diff --git a/stdlib/date/infinity.rb b/stdlib/date/infinity.rb
new file mode 100644
index 00000000..30086b9e
--- /dev/null
+++ b/stdlib/date/infinity.rb
@@ -0,0 +1,73 @@
+class Date
+  class Infinity < Numeric
+    include Comparable
+
+    def initialize(d = 1)
+      @d = d <=> 0
+    end
+
+    attr_reader :d
+
+    def zero?
+      false
+    end
+
+    def finite?
+      false
+    end
+
+    def infinite?
+      d.nonzero?
+    end
+
+    def nan?
+      d.zero?
+    end
+
+    def abs
+      self.class.new
+    end
+
+    def -@
+      self.class.new(-d)
+    end
+
+    def +@
+      self.class.new(+d)
+    end
+
+    def <=>(other)
+      case other
+      when Infinity
+        d <=> other.d
+      when Numeric
+        d
+      else
+        begin
+          l, r = other.coerce(self)
+          l <=> r
+        rescue NoMethodError
+          nil
+        end
+      end
+    end
+
+    def coerce(other)
+      case other
+      when Numeric
+        [-d, d]
+      else
+        super
+      end
+    end
+
+    def to_f
+      return 0 if @d == 0
+      if @d > 0
+        Float::INFINITY
+      else
+        -Float::INFINITY
+      end
+    end
+  end
+end
diff --git a/stdlib/delegate.rb b/stdlib/delegate.rb
new file mode 100644
index 00000000..eb56ccc3
--- /dev/null
+++ b/stdlib/delegate.rb
@@ -0,0 +1,37 @@
+class Delegator < BasicObject
+  def initialize(obj)
+    __setobj__(obj)
+  end
+
+  def method_missing(m, *args, &block)
+    target = __getobj__
+
+    if target.respond_to?(m)
+      target.__send__(m, *args, &block)
+    else
+      super(m, *args, &block)
+    end
+  end
+
+  #
+  # Checks for a method provided by this the delegate object by forwarding the
+  # call through \_\_getobj\_\_.
+  #
+  def respond_to_missing?(m, include_private)
+    __getobj__.respond_to?(m, include_private)
+  end
+end
+
+class SimpleDelegator < Delegator
+  def __getobj__
+    @delegate_sd_obj
+  end
+
+  def __setobj__(obj)
+    @delegate_sd_obj = obj
+  end
+end
+
+def DelegateClass(superklass)
+  SimpleDelegator
+end
diff --git a/stdlib/dir.rb b/stdlib/dir.rb
new file mode 100644
index 00000000..da4854fd
--- /dev/null
+++ b/stdlib/dir.rb
@@ -0,0 +1 @@
+warn "Dir is already part of corelib now, you don't need to require it anymore."
diff --git a/stdlib/e2mmap.rb b/stdlib/e2mmap.rb
new file mode 100644
index 00000000..bff476aa
--- /dev/null
+++ b/stdlib/e2mmap.rb
@@ -0,0 +1,176 @@
+# frozen_string_literal: true
+#
+#--
+#   e2mmap.rb - for Ruby 1.1
+#       $Release Version: 2.0$
+#       $Revision: 1.10 $
+#       by Keiju ISHITSUKA
+#
+#++
+#
+# Helper module for easily defining exceptions with predefined messages.
+#
+# == Usage
+#
+# 1.
+#   class Foo
+#     extend Exception2MessageMapper
+#     def_e2message ExistingExceptionClass, "message..."
+#     def_exception :NewExceptionClass, "message..."[, superclass]
+#     ...
+#   end
+#
+# 2.
+#   module Error
+#     extend Exception2MessageMapper
+#     def_e2message ExistingExceptionClass, "message..."
+#     def_exception :NewExceptionClass, "message..."[, superclass]
+#     ...
+#   end
+#   class Foo
+#     include Error
+#     ...
+#   end
+#
+#   foo = Foo.new
+#   foo.Fail ....
+#
+# 3.
+#   module Error
+#     extend Exception2MessageMapper
+#     def_e2message ExistingExceptionClass, "message..."
+#     def_exception :NewExceptionClass, "message..."[, superclass]
+#     ...
+#   end
+#   class Foo
+#     extend Exception2MessageMapper
+#     include Error
+#     ...
+#   end
+#
+#   Foo.Fail NewExceptionClass, arg...
+#   Foo.Fail ExistingExceptionClass, arg...
+#
+#
+module Exception2MessageMapper
+
+  E2MM = Exception2MessageMapper # :nodoc:
+
+  def E2MM.extend_object(cl)
+    super
+    cl.bind(self) unless cl < E2MM
+  end
+
+  def bind(cl)
+    self.module_eval do
+      def Raise(err = nil, *rest)
+        Exception2MessageMapper.Raise(self.class, err, *rest)
+      end
+      alias Fail Raise
+
+      class << self
+        undef included
+      end
+      def self.included(mod)
+        mod.extend Exception2MessageMapper
+      end
+    end
+  end
+
+  # Fail(err, *rest)
+  #     err:    exception
+  #     rest:   message arguments
+  #
+  def Raise(err = nil, *rest)
+    E2MM.Raise(self, err, *rest)
+  end
+  alias Fail Raise
+  alias fail Raise
+
+  # def_e2message(c, m)
+  #         c:  exception
+  #         m:  message_form
+  #     define exception c with message m.
+  #
+  def def_e2message(c, m)
+    E2MM.def_e2message(self, c, m)
+  end
+
+  # def_exception(n, m, s)
+  #         n:  exception_name
+  #         m:  message_form
+  #         s:  superclass(default: StandardError)
+  #     define exception named ``c'' with message m.
+  #
+  def def_exception(n, m, s = StandardError)
+    E2MM.def_exception(self, n, m, s)
+  end
+
+  #
+  # Private definitions.
+  #
+  # {[class, exp] => message, ...}
+  @MessageMap = {}
+
+  # E2MM.def_e2message(k, e, m)
+  #         k:  class to define exception under.
+  #         e:  exception
+  #         m:  message_form
+  #     define exception c with message m.
+  #
+  def E2MM.def_e2message(k, c, m)
+    E2MM.instance_eval{@MessageMap[[k, c]] = m}
+    c
+  end
+
+  # E2MM.def_exception(k, n, m, s)
+  #         k:  class to define exception under.
+  #         n:  exception_name
+  #         m:  message_form
+  #         s:  superclass(default: StandardError)
+  #     define exception named ``c'' with message m.
+  #
+  def E2MM.def_exception(k, n, m, s = StandardError)
+    e = Class.new(s)
+    E2MM.instance_eval{@MessageMap[[k, e]] = m}
+    k.module_eval {remove_const(n)} if k.const_defined?(n, false)
+    k.const_set(n, e)
+  end
+
+  # Fail(klass, err, *rest)
+  #     klass:  class to define exception under.
+  #     err:    exception
+  #     rest:   message arguments
+  #
+  def E2MM.Raise(klass = E2MM, err = nil, *rest)
+    if form = e2mm_message(klass, err)
+      b = $@.nil? ? caller(1) : $@
+      b.shift if b[0] =~ /^#{Regexp.quote(__FILE__)}:/
+      raise err, sprintf(form, *rest), b
+    else
+      E2MM.Fail E2MM, ErrNotRegisteredException, err.inspect
+    end
+  end
+  class << E2MM
+    alias Fail Raise
+  end
+
+  def E2MM.e2mm_message(klass, exp)
+    klass.ancestors.each do |c|
+      if mes = @MessageMap[[c,exp]]
+        # PATCH: who needs this hack?
+        # m = klass.instance_eval('"' + mes + '"')
+        # return m
+        return mes
+      end
+    end
+    nil
+  end
+  class << self
+    alias message e2mm_message
+  end
+
+  E2MM.def_exception(E2MM,
+                     :ErrNotRegisteredException,
+                     "not registered exception(%s)")
+end
diff --git a/stdlib/encoding.rb b/stdlib/encoding.rb
new file mode 100644
index 00000000..5bcae2ec
--- /dev/null
+++ b/stdlib/encoding.rb
@@ -0,0 +1 @@
+warn 'DEPRECATION: encoding is now part of the core library, requiring it is deprecated'
diff --git a/stdlib/enumerator.rb b/stdlib/enumerator.rb
new file mode 100644
index 00000000..d352c7e8
--- /dev/null
+++ b/stdlib/enumerator.rb
@@ -0,0 +1 @@
+# stub
diff --git a/stdlib/erb.rb b/stdlib/erb.rb
new file mode 100644
index 00000000..d18494eb
--- /dev/null
+++ b/stdlib/erb.rb
@@ -0,0 +1,17 @@
+require 'template'
+
+class ERB
+  module Util
+    `var escapes = { '&': '&amp;', '<': '&lt;', '>': '&gt;', '"': '&quot;', "'": '&#39;'};`
+    `var escape_regexp = /[&<>"']/g;`
+
+    def html_escape(str)
+      `("" + str).replace(escape_regexp, function (m) { return escapes[m] })`
+    end
+
+    alias h html_escape
+
+    module_function :h
+    module_function :html_escape
+  end
+end
diff --git a/stdlib/file.rb b/stdlib/file.rb
new file mode 100644
index 00000000..7b50e45d
--- /dev/null
+++ b/stdlib/file.rb
@@ -0,0 +1 @@
+warn "File is already part of corelib now, you don't need to require it anymore."
diff --git a/stdlib/fileutils.rb b/stdlib/fileutils.rb
new file mode 100644
index 00000000..e69de29b
diff --git a/stdlib/forwardable.rb b/stdlib/forwardable.rb
new file mode 100644
index 00000000..d6391efc
--- /dev/null
+++ b/stdlib/forwardable.rb
@@ -0,0 +1,71 @@
+module Forwardable
+  def instance_delegate(hash)
+    hash.each do |methods, accessor|
+      methods = [methods] unless methods.respond_to? :each
+
+      methods.each do |method|
+        def_instance_delegator(accessor, method)
+      end
+    end
+  end
+
+  def def_instance_delegators(accessor, *methods)
+    methods.each do |method|
+      next if %w[__send__ __id__].include?(method)
+
+      def_instance_delegator(accessor, method)
+    end
+  end
+
+  def def_instance_delegator(accessor, method, ali = method)
+    if accessor.to_s.start_with? '@'
+      define_method ali do |*args, &block|
+        instance_variable_get(accessor).__send__(method, *args, &block)
+      end
+    else
+      define_method ali do |*args, &block|
+        __send__(accessor).__send__(method, *args, &block)
+      end
+    end
+  end
+
+  alias delegate instance_delegate
+  alias def_delegators def_instance_delegators
+  alias def_delegator def_instance_delegator
+end
+
+module SingleForwardable
+  def single_delegate(hash)
+    hash.each do |methods, accessor|
+      methods = [methods] unless methods.respond_to? :each
+
+      methods.each do |method|
+        def_single_delegator(accessor, method)
+      end
+    end
+  end
+
+  def def_single_delegators(accessor, *methods)
+    methods.each do |method|
+      next if %w[__send__ __id__].include? method
+
+      def_single_delegator(accessor, method)
+    end
+  end
+
+  def def_single_delegator(accessor, method, ali = method)
+    if accessor.to_s.start_with? '@'
+      define_singleton_method ali do |*args, &block|
+        instance_variable_get(accessor).__send__(method, *args, &block)
+      end
+    else
+      define_singleton_method ali do |*args, &block|
+        __send__(accessor).__send__(method, *args, &block)
+      end
+    end
+  end
+
+  alias delegate single_delegate
+  alias def_delegators def_single_delegators
+  alias def_delegator def_single_delegator
+end
diff --git a/stdlib/gjs.rb b/stdlib/gjs.rb
new file mode 100644
index 00000000..4ba50a42
--- /dev/null
+++ b/stdlib/gjs.rb
@@ -0,0 +1,2 @@
+require 'gjs/io'
+require 'gjs/kernel'
diff --git a/stdlib/gjs/io.rb b/stdlib/gjs/io.rb
new file mode 100644
index 00000000..2488f0e4
--- /dev/null
+++ b/stdlib/gjs/io.rb
@@ -0,0 +1,33 @@
+`/* global imports */`
+
+# Basic version, appends \n:
+# $stdout.write_proc = `function(s){print(s)}`
+# $stderr.write_proc = `function(s){printerr(s)}`
+
+# Advanced version:
+%x{
+  var GLib = imports.gi.GLib;
+  var ByteArray = imports.byteArray;
+
+  var stdin = GLib.IOChannel.unix_new(0);
+  var stdout = GLib.IOChannel.unix_new(1);
+  var stderr = GLib.IOChannel.unix_new(2);
+
+  Opal.gvars.stdout.write_proc = function(s) {
+    var buf = ByteArray.fromString(s);
+    stdout.write_chars(buf, buf.length);
+    stdout.flush();
+  }
+
+  Opal.gvars.stderr.write_proc = function(s) {
+    var buf = ByteArray.fromString(s);
+    stderr.write_chars(buf, buf.length);
+    stderr.flush();
+  }
+
+  Opal.gvars.stdin.read_proc = function(_s) {
+    var out = stdin.read_line();
+    if (out[0] == GLib.IOStatus.EOF) return nil;
+    return out[1].toString();
+  }
+}
diff --git a/stdlib/gjs/kernel.rb b/stdlib/gjs/kernel.rb
new file mode 100644
index 00000000..c58c5abc
--- /dev/null
+++ b/stdlib/gjs/kernel.rb
@@ -0,0 +1,5 @@
+`/* global ARGV */`
+
+ARGV = `ARGV`
+
+`Opal.exit = imports.system.exit`
diff --git a/stdlib/headless_chrome.rb b/stdlib/headless_chrome.rb
new file mode 100644
index 00000000..2000d9a7
--- /dev/null
+++ b/stdlib/headless_chrome.rb
@@ -0,0 +1,11 @@
+%x{
+  Opal.exit = function(code) {
+    // You can't exit from the browser.
+    // The first call to Opal.exit should save an exit code.
+    // All next invocations must be ignored.
+
+    if (typeof(window.OPAL_EXIT_CODE) === "undefined") {
+      window.OPAL_EXIT_CODE = code;
+    }
+  }
+}
diff --git a/stdlib/iconv.rb b/stdlib/iconv.rb
new file mode 100644
index 00000000..e69de29b
diff --git a/stdlib/js.rb b/stdlib/js.rb
new file mode 100644
index 00000000..5ff390c5
--- /dev/null
+++ b/stdlib/js.rb
@@ -0,0 +1,69 @@
+# The JS module provides syntax sugar for calling native javascript
+# operators (e.g. typeof, instanceof, new, delete) and global functions
+# (e.g. parseFloat, parseInt).
+module JS
+  # Use delete to remove a property from an object.
+  def delete(object, property)
+    `delete #{object}[#{property}]`
+  end
+
+  # The global object
+  def global
+    `Opal.global`
+  end
+
+  # Use in to check for a property in an object.
+  def in(property, object)
+    `#{property} in #{object}`
+  end
+
+  # Use instanceof to return whether value is an instance of the function.
+  def instanceof(value, func)
+    `#{value} instanceof #{func}`
+  end
+
+  # Use new to create a new instance of the prototype of the function.
+  if `typeof Function.prototype.bind == 'function'`
+    def new(func, *args, &block)
+      args.insert(0, `this`)
+      args << block if block
+      `new (#{func}.bind.apply(#{func}, #{args}))()`
+    end
+  else
+    def new(func, *args, &block)
+      args << block if block
+      f = `function(){return func.apply(this, args)}`
+      f.JS[:prototype] = func.JS[:prototype]
+      `new f()`
+    end
+  end
+
+  # Use typeof to return the underlying javascript type of value.
+  # Note that for undefined values, this will not work exactly like
+  # the javascript typeof operator, as the argument is evaluated before
+  # the function call.
+  def typeof(value)
+    `typeof #{value}`
+  end
+
+  # Use void to return undefined.
+  def void(expr)
+    # Could use `undefined` here, but this is closer to the intent of the method
+    `void #{expr}`
+  end
+
+  # Call the global javascript function with the given arguments.
+  def call(func, *args, &block)
+    g = global
+    args << block if block
+    g.JS[func].JS.apply(g, args)
+  end
+
+  def [](name)
+    `Opal.global[#{name}]`
+  end
+
+  alias method_missing call
+
+  extend self
+end
diff --git a/stdlib/json.rb b/stdlib/json.rb
new file mode 100644
index 00000000..326fd080
--- /dev/null
+++ b/stdlib/json.rb
@@ -0,0 +1,208 @@
+module JSON
+  class JSONError < StandardError
+  end
+
+  class ParserError < JSONError
+  end
+
+  %x{
+    var $hasOwn = Opal.hasOwnProperty;
+
+    function $parse(source) {
+      try {
+        return JSON.parse(source);
+      } catch (e) {
+        #{raise JSON::ParserError, `e.message`};
+      }
+    };
+
+    function to_opal(value, options) {
+      var klass, arr, hash, i, ii, k;
+
+      switch (typeof value) {
+        case 'string':
+          return value;
+
+        case 'number':
+          return value;
+
+        case 'boolean':
+          return !!value;
+
+        case 'undefined':
+          return nil;
+
+        case 'object':
+          if (!value) return nil;
+
+          if (value.$$is_array) {
+            arr = #{`options.array_class`.new};
+
+            for (i = 0, ii = value.length; i < ii; i++) {
+              #{`arr`.push(`to_opal(value[i], options)`)};
+            }
+
+            return arr;
+          }
+          else {
+            hash = #{`options.object_class`.new};
+
+            for (k in value) {
+              if ($hasOwn.call(value, k)) {
+                #{`hash`[`k`] = `to_opal(value[k], options)`};
+              }
+            }
+
+            if (!options.parse && (klass = #{`hash`[JSON.create_id]}) != nil) {
+              return #{::Object.const_get(`klass`).json_create(`hash`)};
+            }
+            else {
+              return hash;
+            }
+          }
+        }
+    };
+  }
+
+  class << self
+    attr_accessor :create_id
+  end
+
+  self.create_id = :json_class
+
+  def self.[](value, options = {})
+    if String === value
+      parse(value, options)
+    else
+      generate(value, options)
+    end
+  end
+
+  def self.parse(source, options = {})
+    from_object(`$parse(source)`, options.merge(parse: true))
+  end
+
+  def self.parse!(source, options = {})
+    parse(source, options)
+  end
+
+  def self.load(source, options = {})
+    from_object(`$parse(source)`, options)
+  end
+
+  # Raw js object => opal object
+  def self.from_object(js_object, options = {})
+    options[:object_class] ||= Hash
+    options[:array_class]  ||= Array
+
+    `to_opal(js_object, options.$$smap)`
+  end
+
+  def self.generate(obj, options = {})
+    obj.to_json(options)
+  end
+
+  def self.dump(obj, io = nil, limit = nil)
+    string = generate(obj)
+
+    if io
+      io = io.to_io if io.responds_to? :to_io
+      io.write string
+
+      io
+    else
+      string
+    end
+  end
+end
+
+class Object
+  def to_json
+    to_s.to_json
+  end
+end
+
+# BUG: Enumerable must come before Array, otherwise it overrides #to_json
+#      this is due to how modules are implemented.
+module Enumerable
+  def to_json
+    to_a.to_json
+  end
+end
+
+class Array
+  def to_json
+    %x{
+      var result = [];
+
+      for (var i = 0, length = #{self}.length; i < length; i++) {
+        result.push(#{`self[i]`.to_json});
+      }
+
+      return '[' + result.join(',') + ']';
+    }
+  end
+end
+
+class Boolean
+  def to_json
+    `(self == true) ? 'true' : 'false'`
+  end
+end
+
+class Hash
+  def to_json
+    %x{
+      var result = [];
+
+      for (var i = 0, keys = self.$$keys, length = keys.length, key, value; i < length; i++) {
+        key = keys[i];
+
+        if (key.$$is_string) {
+          value = self.$$smap[key];
+        } else {
+          value = key.value;
+          key = key.key;
+        }
+
+        result.push(#{`key`.to_s.to_json} + ':' + #{`value`.to_json});
+      }
+
+      return '{' + result.join(',') + '}';
+    }
+  end
+end
+
+class NilClass
+  def to_json
+    'null'
+  end
+end
+
+class Numeric
+  def to_json
+    `self.toString()`
+  end
+end
+
+class String
+  def to_json
+    `JSON.stringify(self)`
+  end
+end
+
+class Time
+  def to_json
+    strftime('%FT%T%z').to_json
+  end
+end
+
+class Date
+  def to_json
+    to_s.to_json
+  end
+
+  def as_json
+    to_s
+  end
+end
diff --git a/stdlib/logger.rb b/stdlib/logger.rb
new file mode 100644
index 00000000..45ade1b4
--- /dev/null
+++ b/stdlib/logger.rb
@@ -0,0 +1,112 @@
+class Logger
+  module Severity
+    DEBUG = 0
+    INFO = 1
+    WARN = 2
+    ERROR = 3
+    FATAL = 4
+    UNKNOWN = 5
+  end
+  include Severity
+
+  SEVERITY_LABELS = Severity.constants.map { |s| [(Severity.const_get s), s.to_s] }.to_h
+
+  class Formatter
+    MESSAGE_FORMAT = "%s, [%s] %5s -- %s: %s\n"
+    DATE_TIME_FORMAT = '%Y-%m-%dT%H:%M:%S.%6N'
+
+    def call(severity, time, progname, msg)
+      format(MESSAGE_FORMAT, severity.chr, time.strftime(DATE_TIME_FORMAT), severity, progname, message_as_string(msg))
+    end
+
+    def message_as_string(msg)
+      case msg
+      when ::String
+        msg
+      when ::Exception
+        msg.full_message
+      else
+        msg.inspect
+      end
+    end
+  end
+
+  attr_reader :level
+  attr_accessor :progname
+  attr_accessor :formatter
+
+  def initialize(pipe)
+    @pipe = pipe
+    @level = DEBUG
+    @formatter = Formatter.new
+  end
+
+  def level=(severity)
+    if ::Integer === severity
+      @level = severity
+    elsif (level = SEVERITY_LABELS.key(severity.to_s.upcase))
+      @level = level
+    else
+      raise ArgumentError, "invalid log level: #{severity}"
+    end
+  end
+
+  def info(progname = nil, &block)
+    add INFO, nil, progname, &block
+  end
+
+  def debug(progname = nil, &block)
+    add DEBUG, nil, progname, &block
+  end
+
+  def warn(progname = nil, &block)
+    add WARN, nil, progname, &block
+  end
+
+  def error(progname = nil, &block)
+    add ERROR, nil, progname, &block
+  end
+
+  def fatal(progname = nil, &block)
+    add FATAL, nil, progname, &block
+  end
+
+  def unknown(progname = nil, &block)
+    add UNKNOWN, nil, progname, &block
+  end
+
+  def info?
+    @level <= INFO
+  end
+
+  def debug?
+    @level <= DEBUG
+  end
+
+  def warn?
+    @level <= WARN
+  end
+
+  def error?
+    @level <= ERROR
+  end
+
+  def fatal?
+    @level <= FATAL
+  end
+
+  def add(severity, message = nil, progname = nil, &block)
+    return true if (severity ||= UNKNOWN) < @level
+    progname ||= @progname
+    unless message
+      if block_given?
+        message = yield
+      else
+        message = progname
+        progname = @progname
+      end
+    end
+    @pipe.write(@formatter.call(SEVERITY_LABELS[severity] || 'ANY', ::Time.now, progname, message))
+    true
+  end
+end
diff --git a/stdlib/math.rb b/stdlib/math.rb
new file mode 100644
index 00000000..61533aa9
--- /dev/null
+++ b/stdlib/math.rb
@@ -0,0 +1 @@
+warn 'DEPRECATION: math is now part of the core library, requiring it is deprecated'
diff --git a/stdlib/matrix.rb b/stdlib/matrix.rb
new file mode 100644
index 00000000..980d3dfb
--- /dev/null
+++ b/stdlib/matrix.rb
@@ -0,0 +1,2169 @@
+# encoding: utf-8
+# frozen_string_literal: false
+#
+# = matrix.rb
+#
+# An implementation of Matrix and Vector classes.
+#
+# See classes Matrix and Vector for documentation.
+#
+# Current Maintainer:: Marc-André Lafortune
+# Original Author:: Keiju ISHITSUKA
+# Original Documentation:: Gavin Sinclair (sourced from <i>Ruby in a Nutshell</i> (Matsumoto, O'Reilly))
+##
+
+require "e2mmap.rb"
+
+module ExceptionForMatrix # :nodoc:
+  extend Exception2MessageMapper
+  def_e2message(TypeError, "wrong argument type %s (expected %s)")
+  def_e2message(ArgumentError, "Wrong # of arguments(%d for %d)")
+
+  def_exception("ErrDimensionMismatch", "\#{self.name} dimension mismatch")
+  def_exception("ErrNotRegular", "Not Regular Matrix")
+  def_exception("ErrOperationNotDefined", "Operation(%s) can\\'t be defined: %s op %s")
+  def_exception("ErrOperationNotImplemented", "Sorry, Operation(%s) not implemented: %s op %s")
+end
+
+#
+# The +Matrix+ class represents a mathematical matrix. It provides methods for creating
+# matrices, operating on them arithmetically and algebraically,
+# and determining their mathematical properties such as trace, rank, inverse, determinant,
+# or eigensystem.
+#
+class Matrix
+  include Enumerable
+  include ExceptionForMatrix
+  autoload :EigenvalueDecomposition, "matrix/eigenvalue_decomposition"
+  autoload :LUPDecomposition, "matrix/lup_decomposition"
+
+  # instance creations
+  private_class_method :new
+  attr_reader :rows
+  protected :rows
+
+  #
+  # Creates a matrix where each argument is a row.
+  #   Matrix[ [25, 93], [-1, 66] ]
+  #      =>  25 93
+  #          -1 66
+  #
+  def Matrix.[](*rows)
+    rows(rows, false)
+  end
+
+  #
+  # Creates a matrix where +rows+ is an array of arrays, each of which is a row
+  # of the matrix.  If the optional argument +copy+ is false, use the given
+  # arrays as the internal structure of the matrix without copying.
+  #   Matrix.rows([[25, 93], [-1, 66]])
+  #      =>  25 93
+  #          -1 66
+  #
+  def Matrix.rows(rows, copy = true)
+    rows = convert_to_array(rows, copy)
+    rows.map! do |row|
+      convert_to_array(row, copy)
+    end
+    size = (rows[0] || []).size
+    rows.each do |row|
+      raise ErrDimensionMismatch, "row size differs (#{row.size} should be #{size})" unless row.size == size
+    end
+    new rows, size
+  end
+
+  #
+  # Creates a matrix using +columns+ as an array of column vectors.
+  #   Matrix.columns([[25, 93], [-1, 66]])
+  #      =>  25 -1
+  #          93 66
+  #
+  def Matrix.columns(columns)
+    rows(columns, false).transpose
+  end
+
+  #
+  # Creates a matrix of size +row_count+ x +column_count+.
+  # It fills the values by calling the given block,
+  # passing the current row and column.
+  # Returns an enumerator if no block is given.
+  #
+  #   m = Matrix.build(2, 4) {|row, col| col - row }
+  #     => Matrix[[0, 1, 2, 3], [-1, 0, 1, 2]]
+  #   m = Matrix.build(3) { rand }
+  #     => a 3x3 matrix with random elements
+  #
+  def Matrix.build(row_count, column_count = row_count)
+    row_count = CoercionHelper.coerce_to_int(row_count)
+    column_count = CoercionHelper.coerce_to_int(column_count)
+    raise ArgumentError if row_count < 0 || column_count < 0
+    return to_enum :build, row_count, column_count unless block_given?
+    rows = Array.new(row_count) do |i|
+      Array.new(column_count) do |j|
+        yield i, j
+      end
+    end
+    new rows, column_count
+  end
+
+  #
+  # Creates a matrix where the diagonal elements are composed of +values+.
+  #   Matrix.diagonal(9, 5, -3)
+  #     =>  9  0  0
+  #         0  5  0
+  #         0  0 -3
+  #
+  def Matrix.diagonal(*values)
+    size = values.size
+    return Matrix.empty if size == 0
+    rows = Array.new(size) {|j|
+      row = Array.new(size, 0)
+      row[j] = values[j]
+      row
+    }
+    new rows
+  end
+
+  #
+  # Creates an +n+ by +n+ diagonal matrix where each diagonal element is
+  # +value+.
+  #   Matrix.scalar(2, 5)
+  #     => 5 0
+  #        0 5
+  #
+  def Matrix.scalar(n, value)
+    diagonal(*Array.new(n, value))
+  end
+
+  #
+  # Creates an +n+ by +n+ identity matrix.
+  #   Matrix.identity(2)
+  #     => 1 0
+  #        0 1
+  #
+  def Matrix.identity(n)
+    scalar(n, 1)
+  end
+  class << Matrix
+    alias unit identity
+    alias I identity
+  end
+
+  #
+  # Creates a zero matrix.
+  #   Matrix.zero(2)
+  #     => 0 0
+  #        0 0
+  #
+  def Matrix.zero(row_count, column_count = row_count)
+    rows = Array.new(row_count){Array.new(column_count, 0)}
+    new rows, column_count
+  end
+
+  #
+  # Creates a single-row matrix where the values of that row are as given in
+  # +row+.
+  #   Matrix.row_vector([4,5,6])
+  #     => 4 5 6
+  #
+  def Matrix.row_vector(row)
+    row = convert_to_array(row)
+    new [row]
+  end
+
+  #
+  # Creates a single-column matrix where the values of that column are as given
+  # in +column+.
+  #   Matrix.column_vector([4,5,6])
+  #     => 4
+  #        5
+  #        6
+  #
+  def Matrix.column_vector(column)
+    column = convert_to_array(column)
+    new [column].transpose, 1
+  end
+
+  #
+  # Creates a empty matrix of +row_count+ x +column_count+.
+  # At least one of +row_count+ or +column_count+ must be 0.
+  #
+  #   m = Matrix.empty(2, 0)
+  #   m == Matrix[ [], [] ]
+  #     => true
+  #   n = Matrix.empty(0, 3)
+  #   n == Matrix.columns([ [], [], [] ])
+  #     => true
+  #   m * n
+  #     => Matrix[[0, 0, 0], [0, 0, 0]]
+  #
+  def Matrix.empty(row_count = 0, column_count = 0)
+    raise ArgumentError, "One size must be 0" if column_count != 0 && row_count != 0
+    raise ArgumentError, "Negative size" if column_count < 0 || row_count < 0
+
+    new([[]]*row_count, column_count)
+  end
+
+  #
+  # Create a matrix by stacking matrices vertically
+  #
+  #   x = Matrix[[1, 2], [3, 4]]
+  #   y = Matrix[[5, 6], [7, 8]]
+  #   Matrix.vstack(x, y) # => Matrix[[1, 2], [3, 4], [5, 6], [7, 8]]
+  #
+  def Matrix.vstack(x, *matrices)
+    x = CoercionHelper.coerce_to_matrix(x)
+    result = x.send(:rows).map(&:dup)
+    matrices.each do |m|
+      m = CoercionHelper.coerce_to_matrix(m)
+      if m.column_count != x.column_count
+        raise ErrDimensionMismatch, "The given matrices must have #{x.column_count} columns, but one has #{m.column_count}"
+      end
+      result.concat(m.send(:rows))
+    end
+    new result, x.column_count
+  end
+
+
+  #
+  # Create a matrix by stacking matrices horizontally
+  #
+  #   x = Matrix[[1, 2], [3, 4]]
+  #   y = Matrix[[5, 6], [7, 8]]
+  #   Matrix.hstack(x, y) # => Matrix[[1, 2, 5, 6], [3, 4, 7, 8]]
+  #
+  def Matrix.hstack(x, *matrices)
+    x = CoercionHelper.coerce_to_matrix(x)
+    result = x.send(:rows).map(&:dup)
+    total_column_count = x.column_count
+    matrices.each do |m|
+      m = CoercionHelper.coerce_to_matrix(m)
+      if m.row_count != x.row_count
+        raise ErrDimensionMismatch, "The given matrices must have #{x.row_count} rows, but one has #{m.row_count}"
+      end
+      result.each_with_index do |row, i|
+        row.concat m.send(:rows)[i]
+      end
+      total_column_count += m.column_count
+    end
+    new result, total_column_count
+  end
+
+  #
+  # Create a matrix by combining matrices entrywise, using the given block
+  #
+  #   x = Matrix[[6, 6], [4, 4]]
+  #   y = Matrix[[1, 2], [3, 4]]
+  #   Matrix.combine(x, y) {|a, b| a - b} # => Matrix[[5, 4], [1, 0]]
+  #
+  def Matrix.combine(*matrices)
+    return to_enum(__method__, *matrices) unless block_given?
+
+    return Matrix.empty if matrices.empty?
+    matrices.map!(&CoercionHelper.method(:coerce_to_matrix))
+    x = matrices.first
+    matrices.each do |m|
+      Matrix.Raise ErrDimensionMismatch unless x.row_count == m.row_count && x.column_count == m.column_count
+    end
+
+    rows = Array.new(x.row_count) do |i|
+      Array.new(x.column_count) do |j|
+        yield matrices.map{|m| m[i,j]}
+      end
+    end
+    new rows, x.column_count
+  end
+
+  def combine(*matrices, &block)
+    Matrix.combine(self, *matrices, &block)
+  end
+
+  #
+  # Matrix.new is private; use Matrix.rows, columns, [], etc... to create.
+  #
+  def initialize(rows, column_count = rows[0].size)
+    # No checking is done at this point. rows must be an Array of Arrays.
+    # column_count must be the size of the first row, if there is one,
+    # otherwise it *must* be specified and can be any integer >= 0
+    @rows = rows
+    @column_count = column_count
+  end
+
+  def new_matrix(rows, column_count = rows[0].size) # :nodoc:
+    self.class.send(:new, rows, column_count) # bypass privacy of Matrix.new
+  end
+  private :new_matrix
+
+  #
+  # Returns element (+i+,+j+) of the matrix.  That is: row +i+, column +j+.
+  #
+  def [](i, j)
+    @rows.fetch(i){return nil}[j]
+  end
+  alias element []
+  alias component []
+
+  def []=(i, j, v)
+    @rows[i][j] = v
+  end
+  alias set_element []=
+  alias set_component []=
+  private :[]=, :set_element, :set_component
+
+  #
+  # Returns the number of rows.
+  #
+  def row_count
+    @rows.size
+  end
+
+  alias_method :row_size, :row_count
+  #
+  # Returns the number of columns.
+  #
+  attr_reader :column_count
+  alias_method :column_size, :column_count
+
+  #
+  # Returns row vector number +i+ of the matrix as a Vector (starting at 0 like
+  # an array).  When a block is given, the elements of that vector are iterated.
+  #
+  def row(i, &block) # :yield: e
+    if block_given?
+      @rows.fetch(i){return self}.each(&block)
+      self
+    else
+      Vector.elements(@rows.fetch(i){return nil})
+    end
+  end
+
+  #
+  # Returns column vector number +j+ of the matrix as a Vector (starting at 0
+  # like an array).  When a block is given, the elements of that vector are
+  # iterated.
+  #
+  def column(j) # :yield: e
+    if block_given?
+      return self if j >= column_count || j < -column_count
+      row_count.times do |i|
+        yield @rows[i][j]
+      end
+      self
+    else
+      return nil if j >= column_count || j < -column_count
+      col = Array.new(row_count) {|i|
+        @rows[i][j]
+      }
+      Vector.elements(col, false)
+    end
+  end
+
+  #
+  # Returns a matrix that is the result of iteration of the given block over all
+  # elements of the matrix.
+  #   Matrix[ [1,2], [3,4] ].collect { |e| e**2 }
+  #     => 1  4
+  #        9 16
+  #
+  def collect(&block) # :yield: e
+    return to_enum(:collect) unless block_given?
+    rows = @rows.collect{|row| row.collect(&block)}
+    new_matrix rows, column_count
+  end
+  alias map collect
+
+  #
+  # Yields all elements of the matrix, starting with those of the first row,
+  # or returns an Enumerator if no block given.
+  # Elements can be restricted by passing an argument:
+  # * :all (default): yields all elements
+  # * :diagonal: yields only elements on the diagonal
+  # * :off_diagonal: yields all elements except on the diagonal
+  # * :lower: yields only elements on or below the diagonal
+  # * :strict_lower: yields only elements below the diagonal
+  # * :strict_upper: yields only elements above the diagonal
+  # * :upper: yields only elements on or above the diagonal
+  #
+  #   Matrix[ [1,2], [3,4] ].each { |e| puts e }
+  #     # => prints the numbers 1 to 4
+  #   Matrix[ [1,2], [3,4] ].each(:strict_lower).to_a # => [3]
+  #
+  def each(which = :all) # :yield: e
+    return to_enum :each, which unless block_given?
+    last = column_count - 1
+    case which
+    when :all
+      block = Proc.new
+      @rows.each do |row|
+        row.each(&block)
+      end
+    when :diagonal
+      @rows.each_with_index do |row, row_index|
+        yield row.fetch(row_index){return self}
+      end
+    when :off_diagonal
+      @rows.each_with_index do |row, row_index|
+        column_count.times do |col_index|
+          yield row[col_index] unless row_index == col_index
+        end
+      end
+    when :lower
+      @rows.each_with_index do |row, row_index|
+        0.upto([row_index, last].min) do |col_index|
+          yield row[col_index]
+        end
+      end
+    when :strict_lower
+      @rows.each_with_index do |row, row_index|
+        [row_index, column_count].min.times do |col_index|
+          yield row[col_index]
+        end
+      end
+    when :strict_upper
+      @rows.each_with_index do |row, row_index|
+        (row_index+1).upto(last) do |col_index|
+          yield row[col_index]
+        end
+      end
+    when :upper
+      @rows.each_with_index do |row, row_index|
+        row_index.upto(last) do |col_index|
+          yield row[col_index]
+        end
+      end
+    else
+      raise ArgumentError, "expected #{which.inspect} to be one of :all, :diagonal, :off_diagonal, :lower, :strict_lower, :strict_upper or :upper"
+    end
+    self
+  end
+
+  #
+  # Same as #each, but the row index and column index in addition to the element
+  #
+  #   Matrix[ [1,2], [3,4] ].each_with_index do |e, row, col|
+  #     puts "#{e} at #{row}, #{col}"
+  #   end
+  #     # => Prints:
+  #     #    1 at 0, 0
+  #     #    2 at 0, 1
+  #     #    3 at 1, 0
+  #     #    4 at 1, 1
+  #
+  def each_with_index(which = :all) # :yield: e, row, column
+    return to_enum :each_with_index, which unless block_given?
+    last = column_count - 1
+    case which
+    when :all
+      @rows.each_with_index do |row, row_index|
+        row.each_with_index do |e, col_index|
+          yield e, row_index, col_index
+        end
+      end
+    when :diagonal
+      @rows.each_with_index do |row, row_index|
+        yield row.fetch(row_index){return self}, row_index, row_index
+      end
+    when :off_diagonal
+      @rows.each_with_index do |row, row_index|
+        column_count.times do |col_index|
+          yield row[col_index], row_index, col_index unless row_index == col_index
+        end
+      end
+    when :lower
+      @rows.each_with_index do |row, row_index|
+        0.upto([row_index, last].min) do |col_index|
+          yield row[col_index], row_index, col_index
+        end
+      end
+    when :strict_lower
+      @rows.each_with_index do |row, row_index|
+        [row_index, column_count].min.times do |col_index|
+          yield row[col_index], row_index, col_index
+        end
+      end
+    when :strict_upper
+      @rows.each_with_index do |row, row_index|
+        (row_index+1).upto(last) do |col_index|
+          yield row[col_index], row_index, col_index
+        end
+      end
+    when :upper
+      @rows.each_with_index do |row, row_index|
+        row_index.upto(last) do |col_index|
+          yield row[col_index], row_index, col_index
+        end
+      end
+    else
+      raise ArgumentError, "expected #{which.inspect} to be one of :all, :diagonal, :off_diagonal, :lower, :strict_lower, :strict_upper or :upper"
+    end
+    self
+  end
+
+  SELECTORS = {all: true, diagonal: true, off_diagonal: true, lower: true, strict_lower: true, strict_upper: true, upper: true}.freeze
+  #
+  # :call-seq:
+  #   index(value, selector = :all) -> [row, column]
+  #   index(selector = :all){ block } -> [row, column]
+  #   index(selector = :all) -> an_enumerator
+  #
+  # The index method is specialized to return the index as [row, column]
+  # It also accepts an optional +selector+ argument, see #each for details.
+  #
+  #   Matrix[ [1,2], [3,4] ].index(&:even?) # => [0, 1]
+  #   Matrix[ [1,1], [1,1] ].index(1, :strict_lower) # => [1, 0]
+  #
+  def index(*args)
+    raise ArgumentError, "wrong number of arguments(#{args.size} for 0-2)" if args.size > 2
+    which = (args.size == 2 || SELECTORS.include?(args.last)) ? args.pop : :all
+    return to_enum :find_index, which, *args unless block_given? || args.size == 1
+    if args.size == 1
+      value = args.first
+      each_with_index(which) do |e, row_index, col_index|
+        return row_index, col_index if e == value
+      end
+    else
+      each_with_index(which) do |e, row_index, col_index|
+        return row_index, col_index if yield e
+      end
+    end
+    nil
+  end
+  alias_method :find_index, :index
+
+  #
+  # Returns a section of the matrix.  The parameters are either:
+  # *  start_row, nrows, start_col, ncols; OR
+  # *  row_range, col_range
+  #
+  #   Matrix.diagonal(9, 5, -3).minor(0..1, 0..2)
+  #     => 9 0 0
+  #        0 5 0
+  #
+  # Like Array#[], negative indices count backward from the end of the
+  # row or column (-1 is the last element). Returns nil if the starting
+  # row or column is greater than row_count or column_count respectively.
+  #
+  def minor(*param)
+    case param.size
+    when 2
+      row_range, col_range = param
+      from_row = row_range.first
+      from_row += row_count if from_row < 0
+      to_row = row_range.end
+      to_row += row_count if to_row < 0
+      to_row += 1 unless row_range.exclude_end?
+      size_row = to_row - from_row
+
+      from_col = col_range.first
+      from_col += column_count if from_col < 0
+      to_col = col_range.end
+      to_col += column_count if to_col < 0
+      to_col += 1 unless col_range.exclude_end?
+      size_col = to_col - from_col
+    when 4
+      from_row, size_row, from_col, size_col = param
+      return nil if size_row < 0 || size_col < 0
+      from_row += row_count if from_row < 0
+      from_col += column_count if from_col < 0
+    else
+      raise ArgumentError, param.inspect
+    end
+
+    return nil if from_row > row_count || from_col > column_count || from_row < 0 || from_col < 0
+    rows = @rows[from_row, size_row].collect{|row|
+      row[from_col, size_col]
+    }
+    new_matrix rows, [column_count - from_col, size_col].min
+  end
+
+  #
+  # Returns the submatrix obtained by deleting the specified row and column.
+  #
+  #   Matrix.diagonal(9, 5, -3, 4).first_minor(1, 2)
+  #     => 9 0 0
+  #        0 0 0
+  #        0 0 4
+  #
+  def first_minor(row, column)
+    raise RuntimeError, "first_minor of empty matrix is not defined" if empty?
+
+    unless 0 <= row && row < row_count
+      raise ArgumentError, "invalid row (#{row.inspect} for 0..#{row_count - 1})"
+    end
+
+    unless 0 <= column && column < column_count
+      raise ArgumentError, "invalid column (#{column.inspect} for 0..#{column_count - 1})"
+    end
+
+    arrays = to_a
+    arrays.delete_at(row)
+    arrays.each do |array|
+      array.delete_at(column)
+    end
+
+    new_matrix arrays, column_count - 1
+  end
+
+  #
+  # Returns the (row, column) cofactor which is obtained by multiplying
+  # the first minor by (-1)**(row + column).
+  #
+  #   Matrix.diagonal(9, 5, -3, 4).cofactor(1, 1)
+  #     => -108
+  #
+  def cofactor(row, column)
+    raise RuntimeError, "cofactor of empty matrix is not defined" if empty?
+    Matrix.Raise ErrDimensionMismatch unless square?
+
+    det_of_minor = first_minor(row, column).determinant
+    det_of_minor * (-1) ** (row + column)
+  end
+
+  #
+  # Returns the adjugate of the matrix.
+  #
+  #   Matrix[ [7,6],[3,9] ].adjugate
+  #     => 9 -6
+  #        -3 7
+  #
+  def adjugate
+    Matrix.Raise ErrDimensionMismatch unless square?
+    Matrix.build(row_count, column_count) do |row, column|
+      cofactor(column, row)
+    end
+  end
+
+  #
+  # Returns the Laplace expansion along given row or column.
+  #
+  #    Matrix[[7,6], [3,9]].laplace_expansion(column: 1)
+  #     => 45
+  #
+  #    Matrix[[Vector[1, 0], Vector[0, 1]], [2, 3]].laplace_expansion(row: 0)
+  #     => Vector[3, -2]
+  #
+  #
+  def laplace_expansion(row: nil, column: nil)
+    num = row || column
+
+    if !num || (row && column)
+      raise ArgumentError, "exactly one the row or column arguments must be specified"
+    end
+
+    Matrix.Raise ErrDimensionMismatch unless square?
+    raise RuntimeError, "laplace_expansion of empty matrix is not defined" if empty?
+
+    unless 0 <= num && num < row_count
+      raise ArgumentError, "invalid num (#{num.inspect} for 0..#{row_count - 1})"
+    end
+
+    send(row ? :row : :column, num).map.with_index { |e, k|
+      e * cofactor(*(row ? [num, k] : [k,num]))
+    }.inject(:+)
+  end
+  alias_method :cofactor_expansion, :laplace_expansion
+
+
+  #--
+  # TESTING -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
+  #++
+
+  #
+  # Returns +true+ if this is a diagonal matrix.
+  # Raises an error if matrix is not square.
+  #
+  def diagonal?
+    Matrix.Raise ErrDimensionMismatch unless square?
+    each(:off_diagonal).all?(&:zero?)
+  end
+
+  #
+  # Returns +true+ if this is an empty matrix, i.e. if the number of rows
+  # or the number of columns is 0.
+  #
+  def empty?
+    column_count == 0 || row_count == 0
+  end
+
+  #
+  # Returns +true+ if this is an hermitian matrix.
+  # Raises an error if matrix is not square.
+  #
+  def hermitian?
+    Matrix.Raise ErrDimensionMismatch unless square?
+    each_with_index(:upper).all? do |e, row, col|
+      e == rows[col][row].conj
+    end
+  end
+
+  #
+  # Returns +true+ if this is a lower triangular matrix.
+  #
+  def lower_triangular?
+    each(:strict_upper).all?(&:zero?)
+  end
+
+  #
+  # Returns +true+ if this is a normal matrix.
+  # Raises an error if matrix is not square.
+  #
+  def normal?
+    Matrix.Raise ErrDimensionMismatch unless square?
+    rows.each_with_index do |row_i, i|
+      rows.each_with_index do |row_j, j|
+        s = 0
+        rows.each_with_index do |row_k, k|
+          s += row_i[k] * row_j[k].conj - row_k[i].conj * row_k[j]
+        end
+        return false unless s == 0
+      end
+    end
+    true
+  end
+
+  #
+  # Returns +true+ if this is an orthogonal matrix
+  # Raises an error if matrix is not square.
+  #
+  def orthogonal?
+    Matrix.Raise ErrDimensionMismatch unless square?
+    rows.each_with_index do |row, i|
+      column_count.times do |j|
+        s = 0
+        row_count.times do |k|
+          s += row[k] * rows[k][j]
+        end
+        return false unless s == (i == j ? 1 : 0)
+      end
+    end
+    true
+  end
+
+  #
+  # Returns +true+ if this is a permutation matrix
+  # Raises an error if matrix is not square.
+  #
+  def permutation?
+    Matrix.Raise ErrDimensionMismatch unless square?
+    cols = Array.new(column_count)
+    rows.each_with_index do |row, i|
+      found = false
+      row.each_with_index do |e, j|
+        if e == 1
+          return false if found || cols[j]
+          found = cols[j] = true
+        elsif e != 0
+          return false
+        end
+      end
+      return false unless found
+    end
+    true
+  end
+
+  #
+  # Returns +true+ if all entries of the matrix are real.
+  #
+  def real?
+    all?(&:real?)
+  end
+
+  #
+  # Returns +true+ if this is a regular (i.e. non-singular) matrix.
+  #
+  def regular?
+    not singular?
+  end
+
+  #
+  # Returns +true+ if this is a singular matrix.
+  #
+  def singular?
+    determinant == 0
+  end
+
+  #
+  # Returns +true+ if this is a square matrix.
+  #
+  def square?
+    column_count == row_count
+  end
+
+  #
+  # Returns +true+ if this is a symmetric matrix.
+  # Raises an error if matrix is not square.
+  #
+  def symmetric?
+    Matrix.Raise ErrDimensionMismatch unless square?
+    each_with_index(:strict_upper) do |e, row, col|
+      return false if e != rows[col][row]
+    end
+    true
+  end
+
+  #
+  # Returns +true+ if this is an antisymmetric matrix.
+  # Raises an error if matrix is not square.
+  #
+  def antisymmetric?
+    Matrix.Raise ErrDimensionMismatch unless square?
+    each_with_index(:upper) do |e, row, col|
+      return false unless e == -rows[col][row]
+    end
+    true
+  end
+
+  #
+  # Returns +true+ if this is a unitary matrix
+  # Raises an error if matrix is not square.
+  #
+  def unitary?
+    Matrix.Raise ErrDimensionMismatch unless square?
+    rows.each_with_index do |row, i|
+      column_count.times do |j|
+        s = 0
+        row_count.times do |k|
+          s += row[k].conj * rows[k][j]
+        end
+        return false unless s == (i == j ? 1 : 0)
+      end
+    end
+    true
+  end
+
+  #
+  # Returns +true+ if this is an upper triangular matrix.
+  #
+  def upper_triangular?
+    each(:strict_lower).all?(&:zero?)
+  end
+
+  #
+  # Returns +true+ if this is a matrix with only zero elements
+  #
+  def zero?
+    all?(&:zero?)
+  end
+
+  #--
+  # OBJECT METHODS -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
+  #++
+
+  #
+  # Returns +true+ if and only if the two matrices contain equal elements.
+  #
+  def ==(other)
+    return false unless Matrix === other &&
+                        column_count == other.column_count # necessary for empty matrices
+    rows == other.rows
+  end
+
+  def eql?(other)
+    return false unless Matrix === other &&
+                        column_count == other.column_count # necessary for empty matrices
+    rows.eql? other.rows
+  end
+
+  #
+  # Returns a clone of the matrix, so that the contents of each do not reference
+  # identical objects.
+  # There should be no good reason to do this since Matrices are immutable.
+  #
+  def clone
+    new_matrix @rows.map(&:dup), column_count
+  end
+
+  #
+  # Returns a hash-code for the matrix.
+  #
+  def hash
+    @rows.hash
+  end
+
+  #--
+  # ARITHMETIC -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
+  #++
+
+  #
+  # Matrix multiplication.
+  #   Matrix[[2,4], [6,8]] * Matrix.identity(2)
+  #     => 2 4
+  #        6 8
+  #
+  def *(m) # m is matrix or vector or number
+    case(m)
+    when Numeric
+      rows = @rows.collect {|row|
+        row.collect {|e| e * m }
+      }
+      return new_matrix rows, column_count
+    when Vector
+      m = self.class.column_vector(m)
+      r = self * m
+      return r.column(0)
+    when Matrix
+      Matrix.Raise ErrDimensionMismatch if column_count != m.row_count
+
+      rows = Array.new(row_count) {|i|
+        Array.new(m.column_count) {|j|
+          (0 ... column_count).inject(0) do |vij, k|
+            vij + self[i, k] * m[k, j]
+          end
+        }
+      }
+      return new_matrix rows, m.column_count
+    else
+      return apply_through_coercion(m, __method__)
+    end
+  end
+
+  #
+  # Matrix addition.
+  #   Matrix.scalar(2,5) + Matrix[[1,0], [-4,7]]
+  #     =>  6  0
+  #        -4 12
+  #
+  def +(m)
+    case m
+    when Numeric
+      Matrix.Raise ErrOperationNotDefined, "+", self.class, m.class
+    when Vector
+      m = self.class.column_vector(m)
+    when Matrix
+    else
+      return apply_through_coercion(m, __method__)
+    end
+
+    Matrix.Raise ErrDimensionMismatch unless row_count == m.row_count && column_count == m.column_count
+
+    rows = Array.new(row_count) {|i|
+      Array.new(column_count) {|j|
+        self[i, j] + m[i, j]
+      }
+    }
+    new_matrix rows, column_count
+  end
+
+  #
+  # Matrix subtraction.
+  #   Matrix[[1,5], [4,2]] - Matrix[[9,3], [-4,1]]
+  #     => -8  2
+  #         8  1
+  #
+  def -(m)
+    case m
+    when Numeric
+      Matrix.Raise ErrOperationNotDefined, "-", self.class, m.class
+    when Vector
+      m = self.class.column_vector(m)
+    when Matrix
+    else
+      return apply_through_coercion(m, __method__)
+    end
+
+    Matrix.Raise ErrDimensionMismatch unless row_count == m.row_count && column_count == m.column_count
+
+    rows = Array.new(row_count) {|i|
+      Array.new(column_count) {|j|
+        self[i, j] - m[i, j]
+      }
+    }
+    new_matrix rows, column_count
+  end
+
+  #
+  # Matrix division (multiplication by the inverse).
+  #   Matrix[[7,6], [3,9]] / Matrix[[2,9], [3,1]]
+  #     => -7  1
+  #        -3 -6
+  #
+  def /(other)
+    case other
+    when Numeric
+      rows = @rows.collect {|row|
+        row.collect {|e| e / other }
+      }
+      return new_matrix rows, column_count
+    when Matrix
+      return self * other.inverse
+    else
+      return apply_through_coercion(other, __method__)
+    end
+  end
+
+  #
+  # Hadamard product
+  #    Matrix[[1,2], [3,4]].hadamard_product(Matrix[[1,2], [3,2]])
+  #      => 1  4
+  #         9  8
+  #
+  def hadamard_product(m)
+    combine(m){|a, b| a * b}
+  end
+  alias_method :entrywise_product, :hadamard_product
+
+  #
+  # Returns the inverse of the matrix.
+  #   Matrix[[-1, -1], [0, -1]].inverse
+  #     => -1  1
+  #         0 -1
+  #
+  def inverse
+    Matrix.Raise ErrDimensionMismatch unless square?
+    self.class.I(row_count).send(:inverse_from, self)
+  end
+  alias inv inverse
+
+  def inverse_from(src) # :nodoc:
+    last = row_count - 1
+    a = src.to_a
+
+    0.upto(last) do |k|
+      i = k
+      akk = a[k][k].abs
+      (k+1).upto(last) do |j|
+        v = a[j][k].abs
+        if v > akk
+          i = j
+          akk = v
+        end
+      end
+      Matrix.Raise ErrNotRegular if akk == 0
+      if i != k
+        a[i], a[k] = a[k], a[i]
+        @rows[i], @rows[k] = @rows[k], @rows[i]
+      end
+      akk = a[k][k]
+
+      0.upto(last) do |ii|
+        next if ii == k
+        q = a[ii][k].quo(akk)
+        a[ii][k] = 0
+
+        (k + 1).upto(last) do |j|
+          a[ii][j] -= a[k][j] * q
+        end
+        0.upto(last) do |j|
+          @rows[ii][j] -= @rows[k][j] * q
+        end
+      end
+
+      (k+1).upto(last) do |j|
+        a[k][j] = a[k][j].quo(akk)
+      end
+      0.upto(last) do |j|
+        @rows[k][j] = @rows[k][j].quo(akk)
+      end
+    end
+    self
+  end
+  private :inverse_from
+
+  #
+  # Matrix exponentiation.
+  # Equivalent to multiplying the matrix by itself N times.
+  # Non integer exponents will be handled by diagonalizing the matrix.
+  #
+  #   Matrix[[7,6], [3,9]] ** 2
+  #     => 67 96
+  #        48 99
+  #
+  def **(other)
+    case other
+    when Integer
+      x = self
+      if other <= 0
+        x = self.inverse
+        return self.class.identity(self.column_count) if other == 0
+        other = -other
+      end
+      z = nil
+      loop do
+        z = z ? z * x : x if other[0] == 1
+        return z if (other >>= 1).zero?
+        x *= x
+      end
+    when Numeric
+      v, d, v_inv = eigensystem
+      v * self.class.diagonal(*d.each(:diagonal).map{|e| e ** other}) * v_inv
+    else
+      Matrix.Raise ErrOperationNotDefined, "**", self.class, other.class
+    end
+  end
+
+  def +@
+    self
+  end
+
+  def -@
+    collect {|e| -e }
+  end
+
+  #--
+  # MATRIX FUNCTIONS -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
+  #++
+
+  #
+  # Returns the determinant of the matrix.
+  #
+  # Beware that using Float values can yield erroneous results
+  # because of their lack of precision.
+  # Consider using exact types like Rational or BigDecimal instead.
+  #
+  #   Matrix[[7,6], [3,9]].determinant
+  #     => 45
+  #
+  def determinant
+    Matrix.Raise ErrDimensionMismatch unless square?
+    m = @rows
+    case row_count
+      # Up to 4x4, give result using Laplacian expansion by minors.
+      # This will typically be faster, as well as giving good results
+      # in case of Floats
+    when 0
+      +1
+    when 1
+      + m[0][0]
+    when 2
+      + m[0][0] * m[1][1] - m[0][1] * m[1][0]
+    when 3
+      m0, m1, m2 = m
+      + m0[0] * m1[1] * m2[2] - m0[0] * m1[2] * m2[1] \
+      - m0[1] * m1[0] * m2[2] + m0[1] * m1[2] * m2[0] \
+      + m0[2] * m1[0] * m2[1] - m0[2] * m1[1] * m2[0]
+    when 4
+      m0, m1, m2, m3 = m
+      + m0[0] * m1[1] * m2[2] * m3[3] - m0[0] * m1[1] * m2[3] * m3[2] \
+      - m0[0] * m1[2] * m2[1] * m3[3] + m0[0] * m1[2] * m2[3] * m3[1] \
+      + m0[0] * m1[3] * m2[1] * m3[2] - m0[0] * m1[3] * m2[2] * m3[1] \
+      - m0[1] * m1[0] * m2[2] * m3[3] + m0[1] * m1[0] * m2[3] * m3[2] \
+      + m0[1] * m1[2] * m2[0] * m3[3] - m0[1] * m1[2] * m2[3] * m3[0] \
+      - m0[1] * m1[3] * m2[0] * m3[2] + m0[1] * m1[3] * m2[2] * m3[0] \
+      + m0[2] * m1[0] * m2[1] * m3[3] - m0[2] * m1[0] * m2[3] * m3[1] \
+      - m0[2] * m1[1] * m2[0] * m3[3] + m0[2] * m1[1] * m2[3] * m3[0] \
+      + m0[2] * m1[3] * m2[0] * m3[1] - m0[2] * m1[3] * m2[1] * m3[0] \
+      - m0[3] * m1[0] * m2[1] * m3[2] + m0[3] * m1[0] * m2[2] * m3[1] \
+      + m0[3] * m1[1] * m2[0] * m3[2] - m0[3] * m1[1] * m2[2] * m3[0] \
+      - m0[3] * m1[2] * m2[0] * m3[1] + m0[3] * m1[2] * m2[1] * m3[0]
+    else
+      # For bigger matrices, use an efficient and general algorithm.
+      # Currently, we use the Gauss-Bareiss algorithm
+      determinant_bareiss
+    end
+  end
+  alias_method :det, :determinant
+
+  #
+  # Private. Use Matrix#determinant
+  #
+  # Returns the determinant of the matrix, using
+  # Bareiss' multistep integer-preserving gaussian elimination.
+  # It has the same computational cost order O(n^3) as standard Gaussian elimination.
+  # Intermediate results are fraction free and of lower complexity.
+  # A matrix of Integers will have thus intermediate results that are also Integers,
+  # with smaller bignums (if any), while a matrix of Float will usually have
+  # intermediate results with better precision.
+  #
+  def determinant_bareiss
+    size = row_count
+    last = size - 1
+    a = to_a
+    no_pivot = Proc.new{ return 0 }
+    sign = +1
+    pivot = 1
+    size.times do |k|
+      previous_pivot = pivot
+      if (pivot = a[k][k]) == 0
+        switch = (k+1 ... size).find(no_pivot) {|row|
+          a[row][k] != 0
+        }
+        a[switch], a[k] = a[k], a[switch]
+        pivot = a[k][k]
+        sign = -sign
+      end
+      (k+1).upto(last) do |i|
+        ai = a[i]
+        (k+1).upto(last) do |j|
+          ai[j] =  (pivot * ai[j] - ai[k] * a[k][j]) / previous_pivot
+        end
+      end
+    end
+    sign * pivot
+  end
+  private :determinant_bareiss
+
+  #
+  # deprecated; use Matrix#determinant
+  #
+  def determinant_e
+    warn "Matrix#determinant_e is deprecated; use #determinant", uplevel: 1
+    determinant
+  end
+  alias det_e determinant_e
+
+  #
+  # Returns a new matrix resulting by stacking horizontally
+  # the receiver with the given matrices
+  #
+  #   x = Matrix[[1, 2], [3, 4]]
+  #   y = Matrix[[5, 6], [7, 8]]
+  #   x.hstack(y) # => Matrix[[1, 2, 5, 6], [3, 4, 7, 8]]
+  #
+  def hstack(*matrices)
+    self.class.hstack(self, *matrices)
+  end
+
+  #
+  # Returns the rank of the matrix.
+  # Beware that using Float values can yield erroneous results
+  # because of their lack of precision.
+  # Consider using exact types like Rational or BigDecimal instead.
+  #
+  #   Matrix[[7,6], [3,9]].rank
+  #     => 2
+  #
+  def rank
+    # We currently use Bareiss' multistep integer-preserving gaussian elimination
+    # (see comments on determinant)
+    a = to_a
+    last_column = column_count - 1
+    last_row = row_count - 1
+    pivot_row = 0
+    previous_pivot = 1
+    0.upto(last_column) do |k|
+      switch_row = (pivot_row .. last_row).find {|row|
+        a[row][k] != 0
+      }
+      if switch_row
+        a[switch_row], a[pivot_row] = a[pivot_row], a[switch_row] unless pivot_row == switch_row
+        pivot = a[pivot_row][k]
+        (pivot_row+1).upto(last_row) do |i|
+           ai = a[i]
+           (k+1).upto(last_column) do |j|
+             ai[j] =  (pivot * ai[j] - ai[k] * a[pivot_row][j]) / previous_pivot
+           end
+         end
+        pivot_row += 1
+        previous_pivot = pivot
+      end
+    end
+    pivot_row
+  end
+
+  #
+  # deprecated; use Matrix#rank
+  #
+  def rank_e
+    warn "Matrix#rank_e is deprecated; use #rank", uplevel: 1
+    rank
+  end
+
+  # Returns a matrix with entries rounded to the given precision
+  # (see Float#round)
+  #
+  def round(ndigits=0)
+    map{|e| e.round(ndigits)}
+  end
+
+  #
+  # Returns the trace (sum of diagonal elements) of the matrix.
+  #   Matrix[[7,6], [3,9]].trace
+  #     => 16
+  #
+  def trace
+    Matrix.Raise ErrDimensionMismatch unless square?
+    (0...column_count).inject(0) do |tr, i|
+      tr + @rows[i][i]
+    end
+  end
+  alias tr trace
+
+  #
+  # Returns the transpose of the matrix.
+  #   Matrix[[1,2], [3,4], [5,6]]
+  #     => 1 2
+  #        3 4
+  #        5 6
+  #   Matrix[[1,2], [3,4], [5,6]].transpose
+  #     => 1 3 5
+  #        2 4 6
+  #
+  def transpose
+    return self.class.empty(column_count, 0) if row_count.zero?
+    new_matrix @rows.transpose, row_count
+  end
+  alias t transpose
+
+  #
+  # Returns a new matrix resulting by stacking vertically
+  # the receiver with the given matrices
+  #
+  #   x = Matrix[[1, 2], [3, 4]]
+  #   y = Matrix[[5, 6], [7, 8]]
+  #   x.vstack(y) # => Matrix[[1, 2], [3, 4], [5, 6], [7, 8]]
+  #
+  def vstack(*matrices)
+    self.class.vstack(self, *matrices)
+  end
+
+  #--
+  # DECOMPOSITIONS -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
+  #++
+
+  #
+  # Returns the Eigensystem of the matrix; see +EigenvalueDecomposition+.
+  #   m = Matrix[[1, 2], [3, 4]]
+  #   v, d, v_inv = m.eigensystem
+  #   d.diagonal? # => true
+  #   v.inv == v_inv # => true
+  #   (v * d * v_inv).round(5) == m # => true
+  #
+  def eigensystem
+    EigenvalueDecomposition.new(self)
+  end
+  alias eigen eigensystem
+
+  #
+  # Returns the LUP decomposition of the matrix; see +LUPDecomposition+.
+  #   a = Matrix[[1, 2], [3, 4]]
+  #   l, u, p = a.lup
+  #   l.lower_triangular? # => true
+  #   u.upper_triangular? # => true
+  #   p.permutation?      # => true
+  #   l * u == p * a      # => true
+  #   a.lup.solve([2, 5]) # => Vector[(1/1), (1/2)]
+  #
+  def lup
+    LUPDecomposition.new(self)
+  end
+  alias lup_decomposition lup
+
+  #--
+  # COMPLEX ARITHMETIC -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
+  #++
+
+  #
+  # Returns the conjugate of the matrix.
+  #   Matrix[[Complex(1,2), Complex(0,1), 0], [1, 2, 3]]
+  #     => 1+2i   i  0
+  #           1   2  3
+  #   Matrix[[Complex(1,2), Complex(0,1), 0], [1, 2, 3]].conjugate
+  #     => 1-2i  -i  0
+  #           1   2  3
+  #
+  def conjugate
+    collect(&:conjugate)
+  end
+  alias conj conjugate
+
+  #
+  # Returns the imaginary part of the matrix.
+  #   Matrix[[Complex(1,2), Complex(0,1), 0], [1, 2, 3]]
+  #     => 1+2i  i  0
+  #           1  2  3
+  #   Matrix[[Complex(1,2), Complex(0,1), 0], [1, 2, 3]].imaginary
+  #     =>   2i  i  0
+  #           0  0  0
+  #
+  def imaginary
+    collect(&:imaginary)
+  end
+  alias imag imaginary
+
+  #
+  # Returns the real part of the matrix.
+  #   Matrix[[Complex(1,2), Complex(0,1), 0], [1, 2, 3]]
+  #     => 1+2i  i  0
+  #           1  2  3
+  #   Matrix[[Complex(1,2), Complex(0,1), 0], [1, 2, 3]].real
+  #     =>    1  0  0
+  #           1  2  3
+  #
+  def real
+    collect(&:real)
+  end
+
+  #
+  # Returns an array containing matrices corresponding to the real and imaginary
+  # parts of the matrix
+  #
+  # m.rect == [m.real, m.imag]  # ==> true for all matrices m
+  #
+  def rect
+    [real, imag]
+  end
+  alias rectangular rect
+
+  #--
+  # CONVERTING -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
+  #++
+
+  #
+  # The coerce method provides support for Ruby type coercion.
+  # This coercion mechanism is used by Ruby to handle mixed-type
+  # numeric operations: it is intended to find a compatible common
+  # type between the two operands of the operator.
+  # See also Numeric#coerce.
+  #
+  def coerce(other)
+    case other
+    when Numeric
+      return Scalar.new(other), self
+    else
+      raise TypeError, "#{self.class} can't be coerced into #{other.class}"
+    end
+  end
+
+  #
+  # Returns an array of the row vectors of the matrix.  See Vector.
+  #
+  def row_vectors
+    Array.new(row_count) {|i|
+      row(i)
+    }
+  end
+
+  #
+  # Returns an array of the column vectors of the matrix.  See Vector.
+  #
+  def column_vectors
+    Array.new(column_count) {|i|
+      column(i)
+    }
+  end
+
+  #
+  # Explicit conversion to a Matrix. Returns self
+  #
+  def to_matrix
+    self
+  end
+
+  #
+  # Returns an array of arrays that describe the rows of the matrix.
+  #
+  def to_a
+    @rows.collect(&:dup)
+  end
+
+  # Deprecated.
+  #
+  # Use map(&:to_f)
+  def elements_to_f
+    warn "Matrix#elements_to_f is deprecated, use map(&:to_f)", uplevel: 1
+    map(&:to_f)
+  end
+
+  # Deprecated.
+  #
+  # Use map(&:to_i)
+  def elements_to_i
+    warn "Matrix#elements_to_i is deprecated, use map(&:to_i)", uplevel: 1
+    map(&:to_i)
+  end
+
+  # Deprecated.
+  #
+  # Use map(&:to_r)
+  def elements_to_r
+    warn "Matrix#elements_to_r is deprecated, use map(&:to_r)", uplevel: 1
+    map(&:to_r)
+  end
+
+  #--
+  # PRINTING -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
+  #++
+
+  #
+  # Overrides Object#to_s
+  #
+  def to_s
+    if empty?
+      "#{self.class}.empty(#{row_count}, #{column_count})"
+    else
+      "#{self.class}[" + @rows.collect{|row|
+        "[" + row.collect{|e| e.to_s}.join(", ") + "]"
+      }.join(", ")+"]"
+    end
+  end
+
+  #
+  # Overrides Object#inspect
+  #
+  def inspect
+    if empty?
+      "#{self.class}.empty(#{row_count}, #{column_count})"
+    else
+      "#{self.class}#{@rows.inspect}"
+    end
+  end
+
+  # Private helper modules
+
+  module ConversionHelper # :nodoc:
+    #
+    # Converts the obj to an Array. If copy is set to true
+    # a copy of obj will be made if necessary.
+    #
+    def convert_to_array(obj, copy = false) # :nodoc:
+      case obj
+      when Array
+        copy ? obj.dup : obj
+      when Vector
+        obj.to_a
+      else
+        begin
+          converted = obj.to_ary
+        rescue Exception => e
+          raise TypeError, "can't convert #{obj.class} into an Array (#{e.message})"
+        end
+        raise TypeError, "#{obj.class}#to_ary should return an Array" unless converted.is_a? Array
+        converted
+      end
+    end
+    private :convert_to_array
+  end
+
+  extend ConversionHelper
+
+  module CoercionHelper # :nodoc:
+    #
+    # Applies the operator +oper+ with argument +obj+
+    # through coercion of +obj+
+    #
+    def apply_through_coercion(obj, oper)
+      coercion = obj.coerce(self)
+      raise TypeError unless coercion.is_a?(Array) && coercion.length == 2
+      coercion[0].public_send(oper, coercion[1])
+    rescue
+      raise TypeError, "#{obj.inspect} can't be coerced into #{self.class}"
+    end
+    private :apply_through_coercion
+
+    #
+    # Helper method to coerce a value into a specific class.
+    # Raises a TypeError if the coercion fails or the returned value
+    # is not of the right class.
+    # (from Rubinius)
+    #
+    def self.coerce_to(obj, cls, meth) # :nodoc:
+      return obj if obj.kind_of?(cls)
+      raise TypeError, "Expected a #{cls} but got a #{obj.class}" unless obj.respond_to? meth
+      begin
+        ret = obj.__send__(meth)
+      rescue Exception => e
+        raise TypeError, "Coercion error: #{obj.inspect}.#{meth} => #{cls} failed:\n" \
+                         "(#{e.message})"
+      end
+      raise TypeError, "Coercion error: obj.#{meth} did NOT return a #{cls} (was #{ret.class})" unless ret.kind_of? cls
+      ret
+    end
+
+    def self.coerce_to_int(obj)
+      coerce_to(obj, Integer, :to_int)
+    end
+
+    def self.coerce_to_matrix(obj)
+      coerce_to(obj, Matrix, :to_matrix)
+    end
+  end
+
+  include CoercionHelper
+
+  # Private CLASS
+
+  class Scalar < Numeric # :nodoc:
+    include ExceptionForMatrix
+    include CoercionHelper
+
+    def initialize(value)
+      @value = value
+    end
+
+    # ARITHMETIC
+    def +(other)
+      case other
+      when Numeric
+        Scalar.new(@value + other)
+      when Vector, Matrix
+        Scalar.Raise ErrOperationNotDefined, "+", @value.class, other.class
+      else
+        apply_through_coercion(other, __method__)
+      end
+    end
+
+    def -(other)
+      case other
+      when Numeric
+        Scalar.new(@value - other)
+      when Vector, Matrix
+        Scalar.Raise ErrOperationNotDefined, "-", @value.class, other.class
+      else
+        apply_through_coercion(other, __method__)
+      end
+    end
+
+    def *(other)
+      case other
+      when Numeric
+        Scalar.new(@value * other)
+      when Vector, Matrix
+        other.collect{|e| @value * e}
+      else
+        apply_through_coercion(other, __method__)
+      end
+    end
+
+    def /(other)
+      case other
+      when Numeric
+        Scalar.new(@value / other)
+      when Vector
+        Scalar.Raise ErrOperationNotDefined, "/", @value.class, other.class
+      when Matrix
+        self * other.inverse
+      else
+        apply_through_coercion(other, __method__)
+      end
+    end
+
+    def **(other)
+      case other
+      when Numeric
+        Scalar.new(@value ** other)
+      when Vector
+        Scalar.Raise ErrOperationNotDefined, "**", @value.class, other.class
+      when Matrix
+        #other.powered_by(self)
+        Scalar.Raise ErrOperationNotImplemented, "**", @value.class, other.class
+      else
+        apply_through_coercion(other, __method__)
+      end
+    end
+  end
+
+end
+
+
+#
+# The +Vector+ class represents a mathematical vector, which is useful in its own right, and
+# also constitutes a row or column of a Matrix.
+#
+# == Method Catalogue
+#
+# To create a Vector:
+# * Vector.[](*array)
+# * Vector.elements(array, copy = true)
+# * Vector.basis(size: n, index: k)
+# * Vector.zero(n)
+#
+# To access elements:
+# * #[](i)
+#
+# To enumerate the elements:
+# * #each2(v)
+# * #collect2(v)
+#
+# Properties of vectors:
+# * #angle_with(v)
+# * Vector.independent?(*vs)
+# * #independent?(*vs)
+# * #zero?
+#
+# Vector arithmetic:
+# * #*(x) "is matrix or number"
+# * #+(v)
+# * #-(v)
+# * #/(v)
+# * #+@
+# * #-@
+#
+# Vector functions:
+# * #inner_product(v), dot(v)
+# * #cross_product(v), cross(v)
+# * #collect
+# * #magnitude
+# * #map
+# * #map2(v)
+# * #norm
+# * #normalize
+# * #r
+# * #round
+# * #size
+#
+# Conversion to other data types:
+# * #covector
+# * #to_a
+# * #coerce(other)
+#
+# String representations:
+# * #to_s
+# * #inspect
+#
+class Vector
+  include ExceptionForMatrix
+  include Enumerable
+  include Matrix::CoercionHelper
+  extend Matrix::ConversionHelper
+  #INSTANCE CREATION
+
+  private_class_method :new
+  attr_reader :elements
+  protected :elements
+
+  #
+  # Creates a Vector from a list of elements.
+  #   Vector[7, 4, ...]
+  #
+  def Vector.[](*array)
+    new convert_to_array(array, false)
+  end
+
+  #
+  # Creates a vector from an Array.  The optional second argument specifies
+  # whether the array itself or a copy is used internally.
+  #
+  def Vector.elements(array, copy = true)
+    new convert_to_array(array, copy)
+  end
+
+  #
+  # Returns a standard basis +n+-vector, where k is the index.
+  #
+  #    Vector.basis(size:, index:) # => Vector[0, 1, 0]
+  #
+  def Vector.basis(size:, index:)
+    raise ArgumentError, "invalid size (#{size} for 1..)" if size < 1
+    raise ArgumentError, "invalid index (#{index} for 0...#{size})" unless 0 <= index && index < size
+    array = Array.new(size, 0)
+    array[index] = 1
+    new convert_to_array(array, false)
+  end
+
+  #
+  # Return a zero vector.
+  #
+  #    Vector.zero(3) => Vector[0, 0, 0]
+  #
+  def Vector.zero(size)
+    raise ArgumentError, "invalid size (#{size} for 0..)" if size < 0
+    array = Array.new(size, 0)
+    new convert_to_array(array, false)
+  end
+
+  #
+  # Vector.new is private; use Vector[] or Vector.elements to create.
+  #
+  def initialize(array)
+    # No checking is done at this point.
+    @elements = array
+  end
+
+  # ACCESSING
+
+  #
+  # Returns element number +i+ (starting at zero) of the vector.
+  #
+  def [](i)
+    @elements[i]
+  end
+  alias element []
+  alias component []
+
+  def []=(i, v)
+    @elements[i]= v
+  end
+  alias set_element []=
+  alias set_component []=
+  private :[]=, :set_element, :set_component
+
+  # Returns a vector with entries rounded to the given precision
+  # (see Float#round)
+  #
+  def round(ndigits=0)
+    map{|e| e.round(ndigits)}
+  end
+
+  #
+  # Returns the number of elements in the vector.
+  #
+  def size
+    @elements.size
+  end
+
+  #--
+  # ENUMERATIONS -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
+  #++
+
+  #
+  # Iterate over the elements of this vector
+  #
+  def each(&block)
+    return to_enum(:each) unless block_given?
+    @elements.each(&block)
+    self
+  end
+
+  #
+  # Iterate over the elements of this vector and +v+ in conjunction.
+  #
+  def each2(v) # :yield: e1, e2
+    raise TypeError, "Integer is not like Vector" if v.kind_of?(Integer)
+    Vector.Raise ErrDimensionMismatch if size != v.size
+    return to_enum(:each2, v) unless block_given?
+    size.times do |i|
+      yield @elements[i], v[i]
+    end
+    self
+  end
+
+  #
+  # Collects (as in Enumerable#collect) over the elements of this vector and +v+
+  # in conjunction.
+  #
+  def collect2(v) # :yield: e1, e2
+    raise TypeError, "Integer is not like Vector" if v.kind_of?(Integer)
+    Vector.Raise ErrDimensionMismatch if size != v.size
+    return to_enum(:collect2, v) unless block_given?
+    Array.new(size) do |i|
+      yield @elements[i], v[i]
+    end
+  end
+
+  #--
+  # PROPERTIES -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
+  #++
+
+  #
+  # Returns +true+ iff all of vectors are linearly independent.
+  #
+  #   Vector.independent?(Vector[1,0], Vector[0,1])
+  #     => true
+  #
+  #   Vector.independent?(Vector[1,2], Vector[2,4])
+  #     => false
+  #
+  def Vector.independent?(*vs)
+    vs.each do |v|
+      raise TypeError, "expected Vector, got #{v.class}" unless v.is_a?(Vector)
+      Vector.Raise ErrDimensionMismatch unless v.size == vs.first.size
+    end
+    return false if vs.count > vs.first.size
+    Matrix[*vs].rank.eql?(vs.count)
+  end
+
+  #
+  # Returns +true+ iff all of vectors are linearly independent.
+  #
+  #   Vector[1,0].independent?(Vector[0,1])
+  #     => true
+  #
+  #   Vector[1,2].independent?(Vector[2,4])
+  #     => false
+  #
+  def independent?(*vs)
+    self.class.independent?(self, *vs)
+  end
+
+  #
+  # Returns +true+ iff all elements are zero.
+  #
+  def zero?
+    all?(&:zero?)
+  end
+
+  #--
+  # COMPARING -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
+  #++
+
+  #
+  # Returns +true+ iff the two vectors have the same elements in the same order.
+  #
+  def ==(other)
+    return false unless Vector === other
+    @elements == other.elements
+  end
+
+  def eql?(other)
+    return false unless Vector === other
+    @elements.eql? other.elements
+  end
+
+  #
+  # Returns a copy of the vector.
+  #
+  def clone
+    self.class.elements(@elements)
+  end
+
+  #
+  # Returns a hash-code for the vector.
+  #
+  def hash
+    @elements.hash
+  end
+
+  #--
+  # ARITHMETIC -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
+  #++
+
+  #
+  # Multiplies the vector by +x+, where +x+ is a number or a matrix.
+  #
+  def *(x)
+    case x
+    when Numeric
+      els = @elements.collect{|e| e * x}
+      self.class.elements(els, false)
+    when Matrix
+      Matrix.column_vector(self) * x
+    when Vector
+      Vector.Raise ErrOperationNotDefined, "*", self.class, x.class
+    else
+      apply_through_coercion(x, __method__)
+    end
+  end
+
+  #
+  # Vector addition.
+  #
+  def +(v)
+    case v
+    when Vector
+      Vector.Raise ErrDimensionMismatch if size != v.size
+      els = collect2(v) {|v1, v2|
+        v1 + v2
+      }
+      self.class.elements(els, false)
+    when Matrix
+      Matrix.column_vector(self) + v
+    else
+      apply_through_coercion(v, __method__)
+    end
+  end
+
+  #
+  # Vector subtraction.
+  #
+  def -(v)
+    case v
+    when Vector
+      Vector.Raise ErrDimensionMismatch if size != v.size
+      els = collect2(v) {|v1, v2|
+        v1 - v2
+      }
+      self.class.elements(els, false)
+    when Matrix
+      Matrix.column_vector(self) - v
+    else
+      apply_through_coercion(v, __method__)
+    end
+  end
+
+  #
+  # Vector division.
+  #
+  def /(x)
+    case x
+    when Numeric
+      els = @elements.collect{|e| e / x}
+      self.class.elements(els, false)
+    when Matrix, Vector
+      Vector.Raise ErrOperationNotDefined, "/", self.class, x.class
+    else
+      apply_through_coercion(x, __method__)
+    end
+  end
+
+  def +@
+    self
+  end
+
+  def -@
+    collect {|e| -e }
+  end
+
+  #--
+  # VECTOR FUNCTIONS -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
+  #++
+
+  #
+  # Returns the inner product of this vector with the other.
+  #   Vector[4,7].inner_product Vector[10,1]  => 47
+  #
+  def inner_product(v)
+    Vector.Raise ErrDimensionMismatch if size != v.size
+
+    p = 0
+    each2(v) {|v1, v2|
+      p += v1 * v2.conj
+    }
+    p
+  end
+  alias_method :dot, :inner_product
+
+  #
+  # Returns the cross product of this vector with the others.
+  #   Vector[1, 0, 0].cross_product Vector[0, 1, 0]   => Vector[0, 0, 1]
+  #
+  # It is generalized to other dimensions to return a vector perpendicular
+  # to the arguments.
+  #   Vector[1, 2].cross_product # => Vector[-2, 1]
+  #   Vector[1, 0, 0, 0].cross_product(
+  #      Vector[0, 1, 0, 0],
+  #      Vector[0, 0, 1, 0]
+  #   )  #=> Vector[0, 0, 0, 1]
+  #
+  def cross_product(*vs)
+    raise ErrOperationNotDefined, "cross product is not defined on vectors of dimension #{size}" unless size >= 2
+    raise ArgumentError, "wrong number of arguments (#{vs.size} for #{size - 2})" unless vs.size == size - 2
+    vs.each do |v|
+      raise TypeError, "expected Vector, got #{v.class}" unless v.is_a? Vector
+      Vector.Raise ErrDimensionMismatch unless v.size == size
+    end
+    case size
+    when 2
+      Vector[-@elements[1], @elements[0]]
+    when 3
+      v = vs[0]
+      Vector[ v[2]*@elements[1] - v[1]*@elements[2],
+        v[0]*@elements[2] - v[2]*@elements[0],
+        v[1]*@elements[0] - v[0]*@elements[1] ]
+    else
+      rows = self, *vs, Array.new(size) {|i| Vector.basis(size: size, index: i) }
+      Matrix.rows(rows).laplace_expansion(row: size - 1)
+    end
+  end
+  alias_method :cross, :cross_product
+
+  #
+  # Like Array#collect.
+  #
+  def collect(&block) # :yield: e
+    return to_enum(:collect) unless block_given?
+    els = @elements.collect(&block)
+    self.class.elements(els, false)
+  end
+  alias map collect
+
+  #
+  # Returns the modulus (Pythagorean distance) of the vector.
+  #   Vector[5,8,2].r => 9.643650761
+  #
+  def magnitude
+    Math.sqrt(@elements.inject(0) {|v, e| v + e.abs2})
+  end
+  alias r magnitude
+  alias norm magnitude
+
+  #
+  # Like Vector#collect2, but returns a Vector instead of an Array.
+  #
+  def map2(v, &block) # :yield: e1, e2
+    return to_enum(:map2, v) unless block_given?
+    els = collect2(v, &block)
+    self.class.elements(els, false)
+  end
+
+  class ZeroVectorError < StandardError
+  end
+  #
+  # Returns a new vector with the same direction but with norm 1.
+  #   v = Vector[5,8,2].normalize
+  #   # => Vector[0.5184758473652127, 0.8295613557843402, 0.20739033894608505]
+  #   v.norm => 1.0
+  #
+  def normalize
+    n = magnitude
+    raise ZeroVectorError, "Zero vectors can not be normalized" if n == 0
+    self / n
+  end
+
+  #
+  # Returns an angle with another vector. Result is within the [0...Math::PI].
+  #   Vector[1,0].angle_with(Vector[0,1])
+  #   # => Math::PI / 2
+  #
+  def angle_with(v)
+    raise TypeError, "Expected a Vector, got a #{v.class}" unless v.is_a?(Vector)
+    Vector.Raise ErrDimensionMismatch if size != v.size
+    prod = magnitude * v.magnitude
+    raise ZeroVectorError, "Can't get angle of zero vector" if prod == 0
+
+    Math.acos( inner_product(v) / prod )
+  end
+
+  #--
+  # CONVERTING
+  #++
+
+  #
+  # Creates a single-row matrix from this vector.
+  #
+  def covector
+    Matrix.row_vector(self)
+  end
+
+  #
+  # Returns the elements of the vector in an array.
+  #
+  def to_a
+    @elements.dup
+  end
+
+  #
+  # Return a single-column matrix from this vector
+  #
+  def to_matrix
+    Matrix.column_vector(self)
+  end
+
+  def elements_to_f
+    warn "Vector#elements_to_f is deprecated", uplevel: 1
+    map(&:to_f)
+  end
+
+  def elements_to_i
+    warn "Vector#elements_to_i is deprecated", uplevel: 1
+    map(&:to_i)
+  end
+
+  def elements_to_r
+    warn "Vector#elements_to_r is deprecated", uplevel: 1
+    map(&:to_r)
+  end
+
+  #
+  # The coerce method provides support for Ruby type coercion.
+  # This coercion mechanism is used by Ruby to handle mixed-type
+  # numeric operations: it is intended to find a compatible common
+  # type between the two operands of the operator.
+  # See also Numeric#coerce.
+  #
+  def coerce(other)
+    case other
+    when Numeric
+      return Matrix::Scalar.new(other), self
+    else
+      raise TypeError, "#{self.class} can't be coerced into #{other.class}"
+    end
+  end
+
+  #--
+  # PRINTING -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
+  #++
+
+  #
+  # Overrides Object#to_s
+  #
+  def to_s
+    "Vector[" + @elements.join(", ") + "]"
+  end
+
+  #
+  # Overrides Object#inspect
+  #
+  def inspect
+    "Vector" + @elements.inspect
+  end
+end
diff --git a/stdlib/matrix/eigenvalue_decomposition.rb b/stdlib/matrix/eigenvalue_decomposition.rb
new file mode 100644
index 00000000..919db9e8
--- /dev/null
+++ b/stdlib/matrix/eigenvalue_decomposition.rb
@@ -0,0 +1,883 @@
+# frozen_string_literal: false
+class Matrix
+  # Adapted from JAMA: http://math.nist.gov/javanumerics/jama/
+
+  # Eigenvalues and eigenvectors of a real matrix.
+  #
+  # Computes the eigenvalues and eigenvectors of a matrix A.
+  #
+  # If A is diagonalizable, this provides matrices V and D
+  # such that A = V*D*V.inv, where D is the diagonal matrix with entries
+  # equal to the eigenvalues and V is formed by the eigenvectors.
+  #
+  # If A is symmetric, then V is orthogonal and thus A = V*D*V.t
+
+  class EigenvalueDecomposition
+
+    # Constructs the eigenvalue decomposition for a square matrix +A+
+    #
+    def initialize(a)
+      # @d, @e: Arrays for internal storage of eigenvalues.
+      # @v: Array for internal storage of eigenvectors.
+      # @h: Array for internal storage of nonsymmetric Hessenberg form.
+      raise TypeError, "Expected Matrix but got #{a.class}" unless a.is_a?(Matrix)
+      @size = a.row_count
+      @d = Array.new(@size, 0)
+      @e = Array.new(@size, 0)
+
+      if (@symmetric = a.symmetric?)
+        @v = a.to_a
+        tridiagonalize
+        diagonalize
+      else
+        @v = Array.new(@size) { Array.new(@size, 0) }
+        @h = a.to_a
+        @ort = Array.new(@size, 0)
+        reduce_to_hessenberg
+        hessenberg_to_real_schur
+      end
+    end
+
+    # Returns the eigenvector matrix +V+
+    #
+    def eigenvector_matrix
+      Matrix.send(:new, build_eigenvectors.transpose)
+    end
+    alias v eigenvector_matrix
+
+    # Returns the inverse of the eigenvector matrix +V+
+    #
+    def eigenvector_matrix_inv
+      r = Matrix.send(:new, build_eigenvectors)
+      r = r.transpose.inverse unless @symmetric
+      r
+    end
+    alias v_inv eigenvector_matrix_inv
+
+    # Returns the eigenvalues in an array
+    #
+    def eigenvalues
+      values = @d.dup
+      @e.each_with_index{|imag, i| values[i] = Complex(values[i], imag) unless imag == 0}
+      values
+    end
+
+    # Returns an array of the eigenvectors
+    #
+    def eigenvectors
+      build_eigenvectors.map{|ev| Vector.send(:new, ev)}
+    end
+
+    # Returns the block diagonal eigenvalue matrix +D+
+    #
+    def eigenvalue_matrix
+      Matrix.diagonal(*eigenvalues)
+    end
+    alias d eigenvalue_matrix
+
+    # Returns [eigenvector_matrix, eigenvalue_matrix, eigenvector_matrix_inv]
+    #
+    def to_ary
+      [v, d, v_inv]
+    end
+    alias_method :to_a, :to_ary
+
+  private
+    def build_eigenvectors
+      # JAMA stores complex eigenvectors in a strange way
+      # See http://web.archive.org/web/20111016032731/http://cio.nist.gov/esd/emaildir/lists/jama/msg01021.html
+      @e.each_with_index.map do |imag, i|
+        if imag == 0
+          Array.new(@size){|j| @v[j][i]}
+        elsif imag > 0
+          Array.new(@size){|j| Complex(@v[j][i], @v[j][i+1])}
+        else
+          Array.new(@size){|j| Complex(@v[j][i-1], -@v[j][i])}
+        end
+      end
+    end
+    # Complex scalar division.
+
+    def cdiv(xr, xi, yr, yi)
+      if (yr.abs > yi.abs)
+        r = yi/yr
+        d = yr + r*yi
+        [(xr + r*xi)/d, (xi - r*xr)/d]
+      else
+        r = yr/yi
+        d = yi + r*yr
+        [(r*xr + xi)/d, (r*xi - xr)/d]
+      end
+    end
+
+
+    # Symmetric Householder reduction to tridiagonal form.
+
+    def tridiagonalize
+
+      #  This is derived from the Algol procedures tred2 by
+      #  Bowdler, Martin, Reinsch, and Wilkinson, Handbook for
+      #  Auto. Comp., Vol.ii-Linear Algebra, and the corresponding
+      #  Fortran subroutine in EISPACK.
+
+      @size.times do |j|
+        @d[j] = @v[@size-1][j]
+      end
+
+      # Householder reduction to tridiagonal form.
+
+      (@size-1).downto(0+1) do |i|
+
+        # Scale to avoid under/overflow.
+
+        scale = 0.0
+        h = 0.0
+        i.times do |k|
+          scale = scale + @d[k].abs
+        end
+        if (scale == 0.0)
+          @e[i] = @d[i-1]
+          i.times do |j|
+            @d[j] = @v[i-1][j]
+            @v[i][j] = 0.0
+            @v[j][i] = 0.0
+          end
+        else
+
+          # Generate Householder vector.
+
+          i.times do |k|
+            @d[k] /= scale
+            h += @d[k] * @d[k]
+          end
+          f = @d[i-1]
+          g = Math.sqrt(h)
+          if (f > 0)
+            g = -g
+          end
+          @e[i] = scale * g
+          h -= f * g
+          @d[i-1] = f - g
+          i.times do |j|
+            @e[j] = 0.0
+          end
+
+          # Apply similarity transformation to remaining columns.
+
+          i.times do |j|
+            f = @d[j]
+            @v[j][i] = f
+            g = @e[j] + @v[j][j] * f
+            (j+1).upto(i-1) do |k|
+              g += @v[k][j] * @d[k]
+              @e[k] += @v[k][j] * f
+            end
+            @e[j] = g
+          end
+          f = 0.0
+          i.times do |j|
+            @e[j] /= h
+            f += @e[j] * @d[j]
+          end
+          hh = f / (h + h)
+          i.times do |j|
+            @e[j] -= hh * @d[j]
+          end
+          i.times do |j|
+            f = @d[j]
+            g = @e[j]
+            j.upto(i-1) do |k|
+              @v[k][j] -= (f * @e[k] + g * @d[k])
+            end
+            @d[j] = @v[i-1][j]
+            @v[i][j] = 0.0
+          end
+        end
+        @d[i] = h
+      end
+
+      # Accumulate transformations.
+
+      0.upto(@size-1-1) do |i|
+        @v[@size-1][i] = @v[i][i]
+        @v[i][i] = 1.0
+        h = @d[i+1]
+        if (h != 0.0)
+          0.upto(i) do |k|
+            @d[k] = @v[k][i+1] / h
+          end
+          0.upto(i) do |j|
+            g = 0.0
+            0.upto(i) do |k|
+              g += @v[k][i+1] * @v[k][j]
+            end
+            0.upto(i) do |k|
+              @v[k][j] -= g * @d[k]
+            end
+          end
+        end
+        0.upto(i) do |k|
+          @v[k][i+1] = 0.0
+        end
+      end
+      @size.times do |j|
+        @d[j] = @v[@size-1][j]
+        @v[@size-1][j] = 0.0
+      end
+      @v[@size-1][@size-1] = 1.0
+      @e[0] = 0.0
+    end
+
+
+    # Symmetric tridiagonal QL algorithm.
+
+    def diagonalize
+      #  This is derived from the Algol procedures tql2, by
+      #  Bowdler, Martin, Reinsch, and Wilkinson, Handbook for
+      #  Auto. Comp., Vol.ii-Linear Algebra, and the corresponding
+      #  Fortran subroutine in EISPACK.
+
+      1.upto(@size-1) do |i|
+        @e[i-1] = @e[i]
+      end
+      @e[@size-1] = 0.0
+
+      f = 0.0
+      tst1 = 0.0
+      eps = Float::EPSILON
+      @size.times do |l|
+
+        # Find small subdiagonal element
+
+        tst1 = [tst1, @d[l].abs + @e[l].abs].max
+        m = l
+        while (m < @size) do
+          if (@e[m].abs <= eps*tst1)
+            break
+          end
+          m+=1
+        end
+
+        # If m == l, @d[l] is an eigenvalue,
+        # otherwise, iterate.
+
+        if (m > l)
+          iter = 0
+          begin
+            iter = iter + 1  # (Could check iteration count here.)
+
+            # Compute implicit shift
+
+            g = @d[l]
+            p = (@d[l+1] - g) / (2.0 * @e[l])
+            r = Math.hypot(p, 1.0)
+            if (p < 0)
+              r = -r
+            end
+            @d[l] = @e[l] / (p + r)
+            @d[l+1] = @e[l] * (p + r)
+            dl1 = @d[l+1]
+            h = g - @d[l]
+            (l+2).upto(@size-1) do |i|
+              @d[i] -= h
+            end
+            f += h
+
+            # Implicit QL transformation.
+
+            p = @d[m]
+            c = 1.0
+            c2 = c
+            c3 = c
+            el1 = @e[l+1]
+            s = 0.0
+            s2 = 0.0
+            (m-1).downto(l) do |i|
+              c3 = c2
+              c2 = c
+              s2 = s
+              g = c * @e[i]
+              h = c * p
+              r = Math.hypot(p, @e[i])
+              @e[i+1] = s * r
+              s = @e[i] / r
+              c = p / r
+              p = c * @d[i] - s * g
+              @d[i+1] = h + s * (c * g + s * @d[i])
+
+              # Accumulate transformation.
+
+              @size.times do |k|
+                h = @v[k][i+1]
+                @v[k][i+1] = s * @v[k][i] + c * h
+                @v[k][i] = c * @v[k][i] - s * h
+              end
+            end
+            p = -s * s2 * c3 * el1 * @e[l] / dl1
+            @e[l] = s * p
+            @d[l] = c * p
+
+            # Check for convergence.
+
+          end while (@e[l].abs > eps*tst1)
+        end
+        @d[l] = @d[l] + f
+        @e[l] = 0.0
+      end
+
+      # Sort eigenvalues and corresponding vectors.
+
+      0.upto(@size-2) do |i|
+        k = i
+        p = @d[i]
+        (i+1).upto(@size-1) do |j|
+          if (@d[j] < p)
+            k = j
+            p = @d[j]
+          end
+        end
+        if (k != i)
+          @d[k] = @d[i]
+          @d[i] = p
+          @size.times do |j|
+            p = @v[j][i]
+            @v[j][i] = @v[j][k]
+            @v[j][k] = p
+          end
+        end
+      end
+    end
+
+    # Nonsymmetric reduction to Hessenberg form.
+
+    def reduce_to_hessenberg
+      #  This is derived from the Algol procedures orthes and ortran,
+      #  by Martin and Wilkinson, Handbook for Auto. Comp.,
+      #  Vol.ii-Linear Algebra, and the corresponding
+      #  Fortran subroutines in EISPACK.
+
+      low = 0
+      high = @size-1
+
+      (low+1).upto(high-1) do |m|
+
+        # Scale column.
+
+        scale = 0.0
+        m.upto(high) do |i|
+          scale = scale + @h[i][m-1].abs
+        end
+        if (scale != 0.0)
+
+          # Compute Householder transformation.
+
+          h = 0.0
+          high.downto(m) do |i|
+            @ort[i] = @h[i][m-1]/scale
+            h += @ort[i] * @ort[i]
+          end
+          g = Math.sqrt(h)
+          if (@ort[m] > 0)
+            g = -g
+          end
+          h -= @ort[m] * g
+          @ort[m] = @ort[m] - g
+
+          # Apply Householder similarity transformation
+          # @h = (I-u*u'/h)*@h*(I-u*u')/h)
+
+          m.upto(@size-1) do |j|
+            f = 0.0
+            high.downto(m) do |i|
+              f += @ort[i]*@h[i][j]
+            end
+            f = f/h
+            m.upto(high) do |i|
+              @h[i][j] -= f*@ort[i]
+            end
+          end
+
+          0.upto(high) do |i|
+            f = 0.0
+            high.downto(m) do |j|
+              f += @ort[j]*@h[i][j]
+            end
+            f = f/h
+            m.upto(high) do |j|
+              @h[i][j] -= f*@ort[j]
+            end
+          end
+          @ort[m] = scale*@ort[m]
+          @h[m][m-1] = scale*g
+        end
+      end
+
+      # Accumulate transformations (Algol's ortran).
+
+      @size.times do |i|
+        @size.times do |j|
+          @v[i][j] = (i == j ? 1.0 : 0.0)
+        end
+      end
+
+      (high-1).downto(low+1) do |m|
+        if (@h[m][m-1] != 0.0)
+          (m+1).upto(high) do |i|
+            @ort[i] = @h[i][m-1]
+          end
+          m.upto(high) do |j|
+            g = 0.0
+            m.upto(high) do |i|
+              g += @ort[i] * @v[i][j]
+            end
+            # Double division avoids possible underflow
+            g = (g / @ort[m]) / @h[m][m-1]
+            m.upto(high) do |i|
+              @v[i][j] += g * @ort[i]
+            end
+          end
+        end
+      end
+    end
+
+
+
+    # Nonsymmetric reduction from Hessenberg to real Schur form.
+
+    def hessenberg_to_real_schur
+
+      #  This is derived from the Algol procedure hqr2,
+      #  by Martin and Wilkinson, Handbook for Auto. Comp.,
+      #  Vol.ii-Linear Algebra, and the corresponding
+      #  Fortran subroutine in EISPACK.
+
+      # Initialize
+
+      nn = @size
+      n = nn-1
+      low = 0
+      high = nn-1
+      eps = Float::EPSILON
+      exshift = 0.0
+      p = q = r = s = z = 0
+
+      # Store roots isolated by balanc and compute matrix norm
+
+      norm = 0.0
+      nn.times do |i|
+        if (i < low || i > high)
+          @d[i] = @h[i][i]
+          @e[i] = 0.0
+        end
+        ([i-1, 0].max).upto(nn-1) do |j|
+          norm = norm + @h[i][j].abs
+        end
+      end
+
+      # Outer loop over eigenvalue index
+
+      iter = 0
+      while (n >= low) do
+
+        # Look for single small sub-diagonal element
+
+        l = n
+        while (l > low) do
+          s = @h[l-1][l-1].abs + @h[l][l].abs
+          if (s == 0.0)
+            s = norm
+          end
+          if (@h[l][l-1].abs < eps * s)
+            break
+          end
+          l-=1
+        end
+
+        # Check for convergence
+        # One root found
+
+        if (l == n)
+          @h[n][n] = @h[n][n] + exshift
+          @d[n] = @h[n][n]
+          @e[n] = 0.0
+          n-=1
+          iter = 0
+
+        # Two roots found
+
+        elsif (l == n-1)
+          w = @h[n][n-1] * @h[n-1][n]
+          p = (@h[n-1][n-1] - @h[n][n]) / 2.0
+          q = p * p + w
+          z = Math.sqrt(q.abs)
+          @h[n][n] = @h[n][n] + exshift
+          @h[n-1][n-1] = @h[n-1][n-1] + exshift
+          x = @h[n][n]
+
+          # Real pair
+
+          if (q >= 0)
+            if (p >= 0)
+              z = p + z
+            else
+              z = p - z
+            end
+            @d[n-1] = x + z
+            @d[n] = @d[n-1]
+            if (z != 0.0)
+              @d[n] = x - w / z
+            end
+            @e[n-1] = 0.0
+            @e[n] = 0.0
+            x = @h[n][n-1]
+            s = x.abs + z.abs
+            p = x / s
+            q = z / s
+            r = Math.sqrt(p * p+q * q)
+            p /= r
+            q /= r
+
+            # Row modification
+
+            (n-1).upto(nn-1) do |j|
+              z = @h[n-1][j]
+              @h[n-1][j] = q * z + p * @h[n][j]
+              @h[n][j] = q * @h[n][j] - p * z
+            end
+
+            # Column modification
+
+            0.upto(n) do |i|
+              z = @h[i][n-1]
+              @h[i][n-1] = q * z + p * @h[i][n]
+              @h[i][n] = q * @h[i][n] - p * z
+            end
+
+            # Accumulate transformations
+
+            low.upto(high) do |i|
+              z = @v[i][n-1]
+              @v[i][n-1] = q * z + p * @v[i][n]
+              @v[i][n] = q * @v[i][n] - p * z
+            end
+
+          # Complex pair
+
+          else
+            @d[n-1] = x + p
+            @d[n] = x + p
+            @e[n-1] = z
+            @e[n] = -z
+          end
+          n -= 2
+          iter = 0
+
+        # No convergence yet
+
+        else
+
+          # Form shift
+
+          x = @h[n][n]
+          y = 0.0
+          w = 0.0
+          if (l < n)
+            y = @h[n-1][n-1]
+            w = @h[n][n-1] * @h[n-1][n]
+          end
+
+          # Wilkinson's original ad hoc shift
+
+          if (iter == 10)
+            exshift += x
+            low.upto(n) do |i|
+              @h[i][i] -= x
+            end
+            s = @h[n][n-1].abs + @h[n-1][n-2].abs
+            x = y = 0.75 * s
+            w = -0.4375 * s * s
+          end
+
+          # MATLAB's new ad hoc shift
+
+          if (iter == 30)
+             s = (y - x) / 2.0
+             s *= s + w
+             if (s > 0)
+                s = Math.sqrt(s)
+                if (y < x)
+                  s = -s
+                end
+                s = x - w / ((y - x) / 2.0 + s)
+                low.upto(n) do |i|
+                  @h[i][i] -= s
+                end
+                exshift += s
+                x = y = w = 0.964
+             end
+          end
+
+          iter = iter + 1  # (Could check iteration count here.)
+
+          # Look for two consecutive small sub-diagonal elements
+
+          m = n-2
+          while (m >= l) do
+            z = @h[m][m]
+            r = x - z
+            s = y - z
+            p = (r * s - w) / @h[m+1][m] + @h[m][m+1]
+            q = @h[m+1][m+1] - z - r - s
+            r = @h[m+2][m+1]
+            s = p.abs + q.abs + r.abs
+            p /= s
+            q /= s
+            r /= s
+            if (m == l)
+              break
+            end
+            if (@h[m][m-1].abs * (q.abs + r.abs) <
+              eps * (p.abs * (@h[m-1][m-1].abs + z.abs +
+              @h[m+1][m+1].abs)))
+                break
+            end
+            m-=1
+          end
+
+          (m+2).upto(n) do |i|
+            @h[i][i-2] = 0.0
+            if (i > m+2)
+              @h[i][i-3] = 0.0
+            end
+          end
+
+          # Double QR step involving rows l:n and columns m:n
+
+          m.upto(n-1) do |k|
+            notlast = (k != n-1)
+            if (k != m)
+              p = @h[k][k-1]
+              q = @h[k+1][k-1]
+              r = (notlast ? @h[k+2][k-1] : 0.0)
+              x = p.abs + q.abs + r.abs
+              next if x == 0
+              p /= x
+              q /= x
+              r /= x
+            end
+            s = Math.sqrt(p * p + q * q + r * r)
+            if (p < 0)
+              s = -s
+            end
+            if (s != 0)
+              if (k != m)
+                @h[k][k-1] = -s * x
+              elsif (l != m)
+                @h[k][k-1] = -@h[k][k-1]
+              end
+              p += s
+              x = p / s
+              y = q / s
+              z = r / s
+              q /= p
+              r /= p
+
+              # Row modification
+
+              k.upto(nn-1) do |j|
+                p = @h[k][j] + q * @h[k+1][j]
+                if (notlast)
+                  p += r * @h[k+2][j]
+                  @h[k+2][j] = @h[k+2][j] - p * z
+                end
+                @h[k][j] = @h[k][j] - p * x
+                @h[k+1][j] = @h[k+1][j] - p * y
+              end
+
+              # Column modification
+
+              0.upto([n, k+3].min) do |i|
+                p = x * @h[i][k] + y * @h[i][k+1]
+                if (notlast)
+                  p += z * @h[i][k+2]
+                  @h[i][k+2] = @h[i][k+2] - p * r
+                end
+                @h[i][k] = @h[i][k] - p
+                @h[i][k+1] = @h[i][k+1] - p * q
+              end
+
+              # Accumulate transformations
+
+              low.upto(high) do |i|
+                p = x * @v[i][k] + y * @v[i][k+1]
+                if (notlast)
+                  p += z * @v[i][k+2]
+                  @v[i][k+2] = @v[i][k+2] - p * r
+                end
+                @v[i][k] = @v[i][k] - p
+                @v[i][k+1] = @v[i][k+1] - p * q
+              end
+            end  # (s != 0)
+          end  # k loop
+        end  # check convergence
+      end  # while (n >= low)
+
+      # Backsubstitute to find vectors of upper triangular form
+
+      if (norm == 0.0)
+        return
+      end
+
+      (nn-1).downto(0) do |k|
+        p = @d[k]
+        q = @e[k]
+
+        # Real vector
+
+        if (q == 0)
+          l = k
+          @h[k][k] = 1.0
+          (k-1).downto(0) do |i|
+            w = @h[i][i] - p
+            r = 0.0
+            l.upto(k) do |j|
+              r += @h[i][j] * @h[j][k]
+            end
+            if (@e[i] < 0.0)
+              z = w
+              s = r
+            else
+              l = i
+              if (@e[i] == 0.0)
+                if (w != 0.0)
+                  @h[i][k] = -r / w
+                else
+                  @h[i][k] = -r / (eps * norm)
+                end
+
+              # Solve real equations
+
+              else
+                x = @h[i][i+1]
+                y = @h[i+1][i]
+                q = (@d[i] - p) * (@d[i] - p) + @e[i] * @e[i]
+                t = (x * s - z * r) / q
+                @h[i][k] = t
+                if (x.abs > z.abs)
+                  @h[i+1][k] = (-r - w * t) / x
+                else
+                  @h[i+1][k] = (-s - y * t) / z
+                end
+              end
+
+              # Overflow control
+
+              t = @h[i][k].abs
+              if ((eps * t) * t > 1)
+                i.upto(k) do |j|
+                  @h[j][k] = @h[j][k] / t
+                end
+              end
+            end
+          end
+
+        # Complex vector
+
+        elsif (q < 0)
+          l = n-1
+
+          # Last vector component imaginary so matrix is triangular
+
+          if (@h[n][n-1].abs > @h[n-1][n].abs)
+            @h[n-1][n-1] = q / @h[n][n-1]
+            @h[n-1][n] = -(@h[n][n] - p) / @h[n][n-1]
+          else
+            cdivr, cdivi = cdiv(0.0, -@h[n-1][n], @h[n-1][n-1]-p, q)
+            @h[n-1][n-1] = cdivr
+            @h[n-1][n] = cdivi
+          end
+          @h[n][n-1] = 0.0
+          @h[n][n] = 1.0
+          (n-2).downto(0) do |i|
+            ra = 0.0
+            sa = 0.0
+            l.upto(n) do |j|
+              ra = ra + @h[i][j] * @h[j][n-1]
+              sa = sa + @h[i][j] * @h[j][n]
+            end
+            w = @h[i][i] - p
+
+            if (@e[i] < 0.0)
+              z = w
+              r = ra
+              s = sa
+            else
+              l = i
+              if (@e[i] == 0)
+                cdivr, cdivi = cdiv(-ra, -sa, w, q)
+                @h[i][n-1] = cdivr
+                @h[i][n] = cdivi
+              else
+
+                # Solve complex equations
+
+                x = @h[i][i+1]
+                y = @h[i+1][i]
+                vr = (@d[i] - p) * (@d[i] - p) + @e[i] * @e[i] - q * q
+                vi = (@d[i] - p) * 2.0 * q
+                if (vr == 0.0 && vi == 0.0)
+                  vr = eps * norm * (w.abs + q.abs +
+                  x.abs + y.abs + z.abs)
+                end
+                cdivr, cdivi = cdiv(x*r-z*ra+q*sa, x*s-z*sa-q*ra, vr, vi)
+                @h[i][n-1] = cdivr
+                @h[i][n] = cdivi
+                if (x.abs > (z.abs + q.abs))
+                  @h[i+1][n-1] = (-ra - w * @h[i][n-1] + q * @h[i][n]) / x
+                  @h[i+1][n] = (-sa - w * @h[i][n] - q * @h[i][n-1]) / x
+                else
+                  cdivr, cdivi = cdiv(-r-y*@h[i][n-1], -s-y*@h[i][n], z, q)
+                  @h[i+1][n-1] = cdivr
+                  @h[i+1][n] = cdivi
+                end
+              end
+
+              # Overflow control
+
+              t = [@h[i][n-1].abs, @h[i][n].abs].max
+              if ((eps * t) * t > 1)
+                i.upto(n) do |j|
+                  @h[j][n-1] = @h[j][n-1] / t
+                  @h[j][n] = @h[j][n] / t
+                end
+              end
+            end
+          end
+        end
+      end
+
+      # Vectors of isolated roots
+
+      nn.times do |i|
+        if (i < low || i > high)
+          i.upto(nn-1) do |j|
+            @v[i][j] = @h[i][j]
+          end
+        end
+      end
+
+      # Back transformation to get eigenvectors of original matrix
+
+      (nn-1).downto(low) do |j|
+        low.upto(high) do |i|
+          z = 0.0
+          low.upto([j, high].min) do |k|
+            z += @v[i][k] * @h[k][j]
+          end
+          @v[i][j] = z
+        end
+      end
+    end
+
+  end
+end
diff --git a/stdlib/matrix/lup_decomposition.rb b/stdlib/matrix/lup_decomposition.rb
new file mode 100644
index 00000000..c001770a
--- /dev/null
+++ b/stdlib/matrix/lup_decomposition.rb
@@ -0,0 +1,219 @@
+# frozen_string_literal: false
+class Matrix
+  # Adapted from JAMA: http://math.nist.gov/javanumerics/jama/
+
+  #
+  # For an m-by-n matrix A with m >= n, the LU decomposition is an m-by-n
+  # unit lower triangular matrix L, an n-by-n upper triangular matrix U,
+  # and a m-by-m permutation matrix P so that L*U = P*A.
+  # If m < n, then L is m-by-m and U is m-by-n.
+  #
+  # The LUP decomposition with pivoting always exists, even if the matrix is
+  # singular, so the constructor will never fail.  The primary use of the
+  # LU decomposition is in the solution of square systems of simultaneous
+  # linear equations.  This will fail if singular? returns true.
+  #
+
+  class LUPDecomposition
+    # Returns the lower triangular factor +L+
+
+    include Matrix::ConversionHelper
+
+    def l
+      Matrix.build(@row_count, [@column_count, @row_count].min) do |i, j|
+        if (i > j)
+          @lu[i][j]
+        elsif (i == j)
+          1
+        else
+          0
+        end
+      end
+    end
+
+    # Returns the upper triangular factor +U+
+
+    def u
+      Matrix.build([@column_count, @row_count].min, @column_count) do |i, j|
+        if (i <= j)
+          @lu[i][j]
+        else
+          0
+        end
+      end
+    end
+
+    # Returns the permutation matrix +P+
+
+    def p
+      rows = Array.new(@row_count){Array.new(@row_count, 0)}
+      @pivots.each_with_index{|p, i| rows[i][p] = 1}
+      Matrix.send :new, rows, @row_count
+    end
+
+    # Returns +L+, +U+, +P+ in an array
+
+    def to_ary
+      [l, u, p]
+    end
+    alias_method :to_a, :to_ary
+
+    # Returns the pivoting indices
+
+    attr_reader :pivots
+
+    # Returns +true+ if +U+, and hence +A+, is singular.
+
+    def singular?
+      @column_count.times do |j|
+        if (@lu[j][j] == 0)
+          return true
+        end
+      end
+      false
+    end
+
+    # Returns the determinant of +A+, calculated efficiently
+    # from the factorization.
+
+    def det
+      if (@row_count != @column_count)
+        Matrix.Raise Matrix::ErrDimensionMismatch
+      end
+      d = @pivot_sign
+      @column_count.times do |j|
+        d *= @lu[j][j]
+      end
+      d
+    end
+    alias_method :determinant, :det
+
+    # Returns +m+ so that <tt>A*m = b</tt>,
+    # or equivalently so that <tt>L*U*m = P*b</tt>
+    # +b+ can be a Matrix or a Vector
+
+    def solve b
+      if (singular?)
+        Matrix.Raise Matrix::ErrNotRegular, "Matrix is singular."
+      end
+      if b.is_a? Matrix
+        if (b.row_count != @row_count)
+          Matrix.Raise Matrix::ErrDimensionMismatch
+        end
+
+        # Copy right hand side with pivoting
+        nx = b.column_count
+        m = @pivots.map{|row| b.row(row).to_a}
+
+        # Solve L*Y = P*b
+        @column_count.times do |k|
+          (k+1).upto(@column_count-1) do |i|
+            nx.times do |j|
+              m[i][j] -= m[k][j]*@lu[i][k]
+            end
+          end
+        end
+        # Solve U*m = Y
+        (@column_count-1).downto(0) do |k|
+          nx.times do |j|
+            m[k][j] = m[k][j].quo(@lu[k][k])
+          end
+          k.times do |i|
+            nx.times do |j|
+              m[i][j] -= m[k][j]*@lu[i][k]
+            end
+          end
+        end
+        Matrix.send :new, m, nx
+      else # same algorithm, specialized for simpler case of a vector
+        b = convert_to_array(b)
+        if (b.size != @row_count)
+          Matrix.Raise Matrix::ErrDimensionMismatch
+        end
+
+        # Copy right hand side with pivoting
+        m = b.values_at(*@pivots)
+
+        # Solve L*Y = P*b
+        @column_count.times do |k|
+          (k+1).upto(@column_count-1) do |i|
+            m[i] -= m[k]*@lu[i][k]
+          end
+        end
+        # Solve U*m = Y
+        (@column_count-1).downto(0) do |k|
+          m[k] = m[k].quo(@lu[k][k])
+          k.times do |i|
+            m[i] -= m[k]*@lu[i][k]
+          end
+        end
+        Vector.elements(m, false)
+      end
+    end
+
+    def initialize a
+      raise TypeError, "Expected Matrix but got #{a.class}" unless a.is_a?(Matrix)
+      # Use a "left-looking", dot-product, Crout/Doolittle algorithm.
+      @lu = a.to_a
+      @row_count = a.row_count
+      @column_count = a.column_count
+      @pivots = Array.new(@row_count)
+      @row_count.times do |i|
+         @pivots[i] = i
+      end
+      @pivot_sign = 1
+      lu_col_j = Array.new(@row_count)
+
+      # Outer loop.
+
+      @column_count.times do |j|
+
+        # Make a copy of the j-th column to localize references.
+
+        @row_count.times do |i|
+          lu_col_j[i] = @lu[i][j]
+        end
+
+        # Apply previous transformations.
+
+        @row_count.times do |i|
+          lu_row_i = @lu[i]
+
+          # Most of the time is spent in the following dot product.
+
+          kmax = [i, j].min
+          s = 0
+          kmax.times do |k|
+            s += lu_row_i[k]*lu_col_j[k]
+          end
+
+          lu_row_i[j] = lu_col_j[i] -= s
+        end
+
+        # Find pivot and exchange if necessary.
+
+        p = j
+        (j+1).upto(@row_count-1) do |i|
+          if (lu_col_j[i].abs > lu_col_j[p].abs)
+            p = i
+          end
+        end
+        if (p != j)
+          @column_count.times do |k|
+            t = @lu[p][k]; @lu[p][k] = @lu[j][k]; @lu[j][k] = t
+          end
+          k = @pivots[p]; @pivots[p] = @pivots[j]; @pivots[j] = k
+          @pivot_sign = -@pivot_sign
+        end
+
+        # Compute multipliers.
+
+        if (j < @row_count && @lu[j][j] != 0)
+          (j+1).upto(@row_count-1) do |i|
+            @lu[i][j] = @lu[i][j].quo(@lu[j][j])
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/stdlib/nashorn.rb b/stdlib/nashorn.rb
new file mode 100644
index 00000000..9ee60f3e
--- /dev/null
+++ b/stdlib/nashorn.rb
@@ -0,0 +1,5 @@
+module Nashorn
+end
+
+require 'nashorn/io'
+require 'nashorn/file'
diff --git a/stdlib/nashorn/file.rb b/stdlib/nashorn/file.rb
new file mode 100644
index 00000000..dad80b22
--- /dev/null
+++ b/stdlib/nashorn/file.rb
@@ -0,0 +1,30 @@
+`/* global Java */`
+
+require 'corelib/file'
+
+class File
+  def self.read(path)
+    %x(
+        var Paths = Java.type('java.nio.file.Paths');
+        var Files = Java.type('java.nio.file.Files');
+        var lines = Files.readAllLines(Paths.get(path), Java.type('java.nio.charset.StandardCharsets').UTF_8);
+        var data = [];
+        lines.forEach(function(line) { data.push(line); });
+        return data.join("\n");
+      )
+  end
+
+  def self.file?(path)
+    %x{
+      var Files = Java.type('java.nio.file.Files');
+      return Files.exists(path) && Files.isRegularFile(path);
+    }
+  end
+
+  def self.readable?(path)
+    %x{
+      var Files = Java.type('java.nio.file.Files');
+      return Files.exists(path) && Files.isReadable(path);
+    }
+  end
+end
diff --git a/stdlib/nashorn/io.rb b/stdlib/nashorn/io.rb
new file mode 100644
index 00000000..a935ce93
--- /dev/null
+++ b/stdlib/nashorn/io.rb
@@ -0,0 +1,2 @@
+$stdout.write_proc = `function(s){print(s)}`
+$stderr.write_proc = `function(s){print(s)}`
diff --git a/stdlib/native.rb b/stdlib/native.rb
new file mode 100644
index 00000000..548be179
--- /dev/null
+++ b/stdlib/native.rb
@@ -0,0 +1,633 @@
+# Provides a complete set of tools to wrap native JavaScript
+# into nice Ruby objects.
+#
+# @example
+#
+#   $$.document.querySelector('p').classList.add('blue')
+#   # => adds "blue" class to <p>
+#
+#   $$.location.href = 'https://google.com'
+#   # => changes page location
+#
+#   do_later = $$[:setTimeout] # Accessing the "setTimeout" property
+#   do_later.call(->{ puts :hello}, 500)
+#
+# `$$` and `$global` wrap `Opal.global`, which the Opal JS runtime
+# sets to the global `this` object.
+#
+module Native
+  def self.is_a?(object, klass)
+    %x{
+      try {
+        return #{object} instanceof #{try_convert(klass)};
+      }
+      catch (e) {
+        return false;
+      }
+    }
+  end
+
+  def self.try_convert(value, default = nil)
+    %x{
+      if (#{native?(value)}) {
+        return #{value};
+      }
+      else if (#{value.respond_to? :to_n}) {
+        return #{value.to_n};
+      }
+      else {
+        return #{default};
+      }
+    }
+  end
+
+  def self.convert(value)
+    %x{
+      if (#{native?(value)}) {
+        return #{value};
+      }
+      else if (#{value.respond_to? :to_n}) {
+        return #{value.to_n};
+      }
+      else {
+        #{raise ArgumentError, "#{value.inspect} isn't native"};
+      }
+    }
+  end
+
+  def self.call(obj, key, *args, &block)
+    %x{
+      var prop = #{obj}[#{key}];
+
+      if (prop instanceof Function) {
+        var converted = new Array(args.length);
+
+        for (var i = 0, l = args.length; i < l; i++) {
+          var item = args[i],
+              conv = #{try_convert(`item`)};
+
+          converted[i] = conv === nil ? item : conv;
+        }
+
+        if (block !== nil) {
+          converted.push(block);
+        }
+
+        return #{Native(`prop.apply(#{obj}, converted)`)};
+      }
+      else {
+        return #{Native(`prop`)};
+      }
+    }
+  end
+
+  def self.proc(&block)
+    raise LocalJumpError, 'no block given' unless block
+
+    ::Kernel.proc { |*args|
+      args.map! { |arg| Native(arg) }
+      instance = Native(`this`)
+
+      %x{
+        // if global is current scope, run the block in the scope it was defined
+        if (this === Opal.global) {
+          return block.apply(self, #{args});
+        }
+
+        var self_ = block.$$s;
+        block.$$s = null;
+
+        try {
+          return block.apply(#{instance}, #{args});
+        }
+        finally {
+          block.$$s = self_;
+        }
+      }
+    }
+  end
+
+  module Helpers
+    # Exposes a native JavaScript method to Ruby
+    #
+    #
+    # @param new [String]
+    #       The name of the newly created method.
+    #
+    # @param old [String]
+    #       The name of the native JavaScript method to be exposed.
+    #       If the name ends with "=" (e.g. `foo=`) it will be interpreted as
+    #       a property setter. (default: the value of "new")
+    #
+    # @param as [Class]
+    #       If provided the values returned by the original method will be
+    #       returned as instances of the passed class. The class passed to "as"
+    #       is expected to accept a native JavaScript value.
+    #
+    # @example
+    #
+    #   class Element
+    #     extend Native::Helpers
+    #
+    #     alias_native :add_class, :addClass
+    #     alias_native :show
+    #     alias_native :hide
+    #
+    #     def initialize(selector)
+    #       @native = `$(#{selector})`
+    #     end
+    #   end
+    #
+    #   titles = Element.new('h1')
+    #   titles.add_class :foo
+    #   titles.hide
+    #   titles.show
+    #
+    def alias_native(new, old = new, as: nil)
+      if old.end_with? '='
+        define_method new do |value|
+          `#{@native}[#{old[0..-2]}] = #{Native.convert(value)}`
+
+          value
+        end
+      elsif as
+        define_method new do |*args, &block|
+          value = Native.call(@native, old, *args, &block)
+          if value
+            as.new(value.to_n)
+          end
+        end
+      else
+        define_method new do |*args, &block|
+          Native.call(@native, old, *args, &block)
+        end
+      end
+    end
+
+    def native_reader(*names)
+      names.each do |name|
+        define_method name do
+          Native(`#{@native}[name]`)
+        end
+      end
+    end
+
+    def native_writer(*names)
+      names.each do |name|
+        define_method "#{name}=" do |value|
+          Native(`#{@native}[name] = value`)
+        end
+      end
+    end
+
+    def native_accessor(*names)
+      native_reader(*names)
+      native_writer(*names)
+    end
+  end
+
+  module Wrapper
+    def initialize(native)
+      unless ::Kernel.native?(native)
+        ::Kernel.raise ArgumentError, "#{native.inspect} isn't native"
+      end
+
+      @native = native
+    end
+
+    # Returns the internal native JavaScript value
+    def to_n
+      @native
+    end
+
+    def self.included(klass)
+      klass.extend Helpers
+    end
+  end
+
+  def self.included(base)
+    warn 'Including ::Native is deprecated. Please include Native::Wrapper instead.'
+    base.include Wrapper
+  end
+end
+
+module Kernel
+  def native?(value)
+    `value == null || !value.$$class`
+  end
+
+  # Wraps a native JavaScript with `Native::Object.new`
+  #
+  # @return [Native::Object] The wrapped object if it is native
+  # @return [nil] for `null` and `undefined`
+  # @return [obj] The object itself if it's not native
+  def Native(obj)
+    if `#{obj} == null`
+      nil
+    elsif native?(obj)
+      Native::Object.new(obj)
+    elsif obj.is_a?(Array)
+      obj.map do |o|
+        Native(o)
+      end
+    elsif obj.is_a?(Proc)
+      proc do |*args, &block|
+        Native(obj.call(*args, &block))
+      end
+    else
+      obj
+    end
+  end
+
+  alias _Array Array
+
+  # Wraps array-like JavaScript objects in Native::Array
+  def Array(object, *args, &block)
+    if native?(object)
+      return Native::Array.new(object, *args, &block).to_a
+    end
+    _Array(object)
+  end
+end
+
+class Native::Object < BasicObject
+  include ::Native::Wrapper
+
+  def ==(other)
+    `#{@native} === #{::Native.try_convert(other)}`
+  end
+
+  def has_key?(name)
+    `Opal.hasOwnProperty.call(#{@native}, #{name})`
+  end
+
+  def each(*args)
+    if block_given?
+      %x{
+        for (var key in #{@native}) {
+          #{yield `key`, `#{@native}[key]`}
+        }
+      }
+
+      self
+    else
+      method_missing(:each, *args)
+    end
+  end
+
+  def [](key)
+    %x{
+      var prop = #{@native}[key];
+
+      if (prop instanceof Function) {
+        return prop;
+      }
+      else {
+        return #{::Native.call(@native, key)}
+      }
+    }
+  end
+
+  def []=(key, value)
+    native = ::Native.try_convert(value)
+
+    if `#{native} === nil`
+      `#{@native}[key] = #{value}`
+    else
+      `#{@native}[key] = #{native}`
+    end
+  end
+
+  def merge!(other)
+    %x{
+      other = #{::Native.convert(other)};
+
+      for (var prop in other) {
+        #{@native}[prop] = other[prop];
+      }
+    }
+
+    self
+  end
+
+  def respond_to?(name, include_all = false)
+    ::Kernel.instance_method(:respond_to?).bind(self).call(name, include_all)
+  end
+
+  def respond_to_missing?(name, include_all = false)
+    `Opal.hasOwnProperty.call(#{@native}, #{name})`
+  end
+
+  def method_missing(mid, *args, &block)
+    %x{
+      if (mid.charAt(mid.length - 1) === '=') {
+        return #{self[mid.slice(0, mid.length - 1)] = args[0]};
+      }
+      else {
+        return #{::Native.call(@native, mid, *args, &block)};
+      }
+    }
+  end
+
+  def nil?
+    false
+  end
+
+  def is_a?(klass)
+    `Opal.is_a(self, klass)`
+  end
+
+  def instance_of?(klass)
+    `self.$$class === klass`
+  end
+
+  def class
+    `self.$$class`
+  end
+
+  def to_a(options = {}, &block)
+    ::Native::Array.new(@native, options, &block).to_a
+  end
+
+  def inspect
+    "#<Native:#{`String(#{@native})`}>"
+  end
+
+  alias include? has_key?
+  alias key? has_key?
+  alias kind_of? is_a?
+  alias member? has_key?
+end
+
+class Native::Array
+  include Native::Wrapper
+  include Enumerable
+
+  def initialize(native, options = {}, &block)
+    super(native)
+
+    @get    = options[:get] || options[:access]
+    @named  = options[:named]
+    @set    = options[:set] || options[:access]
+    @length = options[:length] || :length
+    @block  = block
+
+    if `#{length} == null`
+      raise ArgumentError, 'no length found on the array-like object'
+    end
+  end
+
+  def each(&block)
+    return enum_for :each unless block
+
+    %x{
+      for (var i = 0, length = #{length}; i < length; i++) {
+        Opal.yield1(block, #{self[`i`]});
+      }
+    }
+
+    self
+  end
+
+  def [](index)
+    result = case index
+             when String, Symbol
+               @named ? `#{@native}[#{@named}](#{index})` : `#{@native}[#{index}]`
+             when Integer
+               @get ? `#{@native}[#{@get}](#{index})` : `#{@native}[#{index}]`
+             end
+
+    if result
+      if @block
+        @block.call(result)
+      else
+        Native(result)
+      end
+    end
+  end
+
+  def []=(index, value)
+    if @set
+      `#{@native}[#{@set}](#{index}, #{Native.convert(value)})`
+    else
+      `#{@native}[#{index}] = #{Native.convert(value)}`
+    end
+  end
+
+  def last(count = nil)
+    if count
+      index  = length - 1
+      result = []
+
+      while index >= 0
+        result << self[index]
+        index  -= 1
+      end
+
+      result
+    else
+      self[length - 1]
+    end
+  end
+
+  def length
+    `#{@native}[#{@length}]`
+  end
+
+  def inspect
+    to_a.inspect
+  end
+
+  alias to_ary to_a
+end
+
+class Numeric
+  # @return the internal JavaScript value (with `valueOf`).
+  def to_n
+    `self.valueOf()`
+  end
+end
+
+class Proc
+  # @return itself (an instance of `Function`)
+  def to_n
+    self
+  end
+end
+
+class String
+  # @return the internal JavaScript value (with `valueOf`).
+  def to_n
+    `self.valueOf()`
+  end
+end
+
+class Regexp
+  # @return the internal JavaScript value (with `valueOf`).
+  def to_n
+    `self.valueOf()`
+  end
+end
+
+class MatchData
+  # @return the array of matches
+  def to_n
+    @matches
+  end
+end
+
+class Struct
+  # @return a JavaScript object with the members as keys and their
+  # values as values.
+  def to_n
+    result = `{}`
+
+    each_pair do |name, value|
+      `#{result}[#{name}] = #{Native.try_convert(value, value)}`
+    end
+
+    result
+  end
+end
+
+class Array
+  # Retuns a copy of itself trying to call #to_n on each member.
+  def to_n
+    %x{
+      var result = [];
+
+      for (var i = 0, length = self.length; i < length; i++) {
+        var obj = self[i];
+
+        result.push(#{Native.try_convert(`obj`, `obj`)});
+      }
+
+      return result;
+    }
+  end
+end
+
+class Boolean
+  # @return the internal JavaScript value (with `valueOf`).
+  def to_n
+    `self.valueOf()`
+  end
+end
+
+class Time
+  # @return itself (an instance of `Date`).
+  def to_n
+    self
+  end
+end
+
+class NilClass
+  # @return the corresponding JavaScript value (`null`).
+  def to_n
+    `null`
+  end
+end
+
+# Running this code twice results in an infinite loop. While it's true
+# that we shouldn't run this file twice, there are certain cases, like
+# for example live reload, when this may happen.
+unless Hash.method_defined? :_initialize
+  class Hash
+    alias _initialize initialize
+
+    def initialize(defaults = undefined, &block)
+      %x{
+        if (defaults != null &&
+             (defaults.constructor === undefined ||
+               defaults.constructor === Object)) {
+          var smap = self.$$smap,
+              keys = self.$$keys,
+              key, value;
+
+          for (key in defaults) {
+            value = defaults[key];
+
+            if (value &&
+                 (value.constructor === undefined ||
+                   value.constructor === Object)) {
+              smap[key] = #{Hash.new(`value`)};
+            } else if (value && value.$$is_array) {
+              value = value.map(function(item) {
+                if (item &&
+                     (item.constructor === undefined ||
+                       item.constructor === Object)) {
+                  return #{Hash.new(`item`)};
+                }
+
+                return #{Native(`item`)};
+              });
+              smap[key] = value
+            } else {
+              smap[key] = #{Native(`value`)};
+            }
+
+            keys.push(key);
+          }
+
+          return self;
+        }
+
+        return #{_initialize(defaults, &block)};
+      }
+    end
+
+    # @return a JavaScript object with the same keys but calling #to_n on
+    # all values.
+    def to_n
+      %x{
+        var result = {},
+            keys = self.$$keys,
+            smap = self.$$smap,
+            key, value;
+
+        for (var i = 0, length = keys.length; i < length; i++) {
+          key = keys[i];
+
+          if (key.$$is_string) {
+            value = smap[key];
+          } else {
+            key = key.key;
+            value = key.value;
+          }
+
+          result[key] = #{Native.try_convert(`value`, `value`)};
+        }
+
+        return result;
+      }
+    end
+  end
+end
+
+class Module
+  # Exposes the current module as a property of
+  # the global object (e.g. `window`).
+  def native_module
+    `Opal.global[#{name}] = #{self}`
+  end
+end
+
+class Class
+  def native_alias(new_jsid, existing_mid)
+    %x{
+      var aliased = #{self}.prototype['$' + #{existing_mid}];
+      if (!aliased) {
+        #{raise NameError.new("undefined method `#{existing_mid}' for class `#{inspect}'", existing_mid)};
+      }
+      #{self}.prototype[#{new_jsid}] = aliased;
+    }
+  end
+
+  def native_class
+    native_module
+    `self["new"] = self.$new`
+  end
+end
+
+# Exposes the global value (would be `window` inside a browser)
+$$ = $global = Native(`Opal.global`)
diff --git a/stdlib/nodejs.rb b/stdlib/nodejs.rb
new file mode 100644
index 00000000..b510f85f
--- /dev/null
+++ b/stdlib/nodejs.rb
@@ -0,0 +1,9 @@
+require 'nodejs/base'
+require 'nodejs/kernel'
+require 'nodejs/file'
+require 'nodejs/dir'
+require 'nodejs/io'
+require 'nodejs/argf'
+require 'nodejs/open-uri'
+require 'nodejs/pathname'
+require 'nodejs/env'
diff --git a/stdlib/nodejs/argf.rb b/stdlib/nodejs/argf.rb
new file mode 100644
index 00000000..1f408503
--- /dev/null
+++ b/stdlib/nodejs/argf.rb
@@ -0,0 +1,110 @@
+ARGF = Object.new
+
+class << ARGF
+  include Enumerable
+
+  def inspect
+    'ARGF'
+  end
+
+  def argv
+    ARGV
+  end
+
+  def file
+    fn = filename
+    if fn == '-'
+      $stdin
+    else
+      @file ||= File.open(fn, 'r')
+    end
+  end
+
+  def filename
+    return @filename if @filename
+    if argv == ['-']
+      '-'
+    elsif argv == []
+      @last_filename || '-'
+    else
+      @file = nil
+      @filename = @last_filename = argv.shift
+    end
+  end
+
+  def close
+    file.close
+    @filename = nil
+    self
+  end
+
+  def closed?
+    file.closed?
+  end
+
+  def each(*args, &block)
+    return enum_for(:each) unless block_given?
+
+    while (l = gets(*args))
+      yield(l)
+    end
+  end
+
+  def gets(*args)
+    s = file.gets(*args)
+    if s.nil?
+      close
+      s = file.gets(*args)
+    end
+    @lineno += 1 if s
+    s
+  end
+
+  def read(len = nil)
+    buf = ''
+    loop do
+      r = file.read(len)
+      if r
+        buf += r
+        len -= r.length
+      end
+      file.close
+      break if len && len > 0 && @filename
+    end
+  end
+
+  def readlines(*args)
+    each(*args).to_a
+  end
+
+  attr_accessor :lineno
+
+  def rewind
+    @lineno = 1
+    f = file
+    begin
+      f.rewind
+    rescue
+      nil
+    end
+    0
+  end
+
+  def fileno
+    return 0 if !@filename && @last_filename
+    file.fileno
+  end
+
+  def eof?
+    file.eof?
+  end
+
+  alias each_line each
+  alias eof eof?
+  alias path filename
+  alias skip close
+  alias to_i fileno
+  alias to_io file
+end
+
+ARGF.lineno = 1
diff --git a/stdlib/nodejs/base.rb b/stdlib/nodejs/base.rb
new file mode 100644
index 00000000..0ad01176
--- /dev/null
+++ b/stdlib/nodejs/base.rb
@@ -0,0 +1,29 @@
+module NodeJS
+  VERSION = `process.version`
+end
+
+`Opal.exit = process.exit`
+
+ARGV = `process.argv.slice(2)`
+ARGV.shift if ARGV.first == '--'
+
+STDOUT.write_proc = ->(string) { `process.stdout.write(string)` }
+STDERR.write_proc = ->(string) { `process.stderr.write(string)` }
+
+`var __fs__ = require('fs')`
+STDIN.read_proc = %x{function(_count) {
+  // Ignore count, return as much as we can get
+  var buf = Buffer.alloc(65536), count;
+  try {
+    count = __fs__.readSync(this.fd, buf, 0, 65536, null);
+  }
+  catch (e) { // Windows systems may raise EOF
+    return nil;
+  }
+  if (count == 0) return nil;
+  return buf.toString('utf8', 0, count);
+}}
+
+STDIN.tty = true
+STDOUT.tty = true
+STDERR.tty = true
diff --git a/stdlib/nodejs/dir.rb b/stdlib/nodejs/dir.rb
new file mode 100644
index 00000000..418ef09f
--- /dev/null
+++ b/stdlib/nodejs/dir.rb
@@ -0,0 +1,54 @@
+class Dir
+  @__glob__ = `require('glob')`
+  @__fs__ = `require('fs')`
+  @__path__ = `require('path')`
+  @__os__ = `require('os')`
+  `var __glob__ = #{@__glob__}`
+  `var __fs__ = #{@__fs__}`
+  `var __path__ = #{@__path__}`
+  `var __os__ = #{@__os__}`
+
+  class << self
+    def [](glob)
+      `__glob__.sync(#{glob})`
+    end
+
+    def pwd
+      `process.cwd().split(__path__.sep).join(__path__.posix.sep)`
+    end
+
+    def home
+      `__os__.homedir()`
+    end
+
+    def chdir(path)
+      `process.chdir(#{path})`
+    end
+
+    def mkdir(path)
+      `__fs__.mkdirSync(#{path})`
+    end
+
+    def entries(dirname)
+      %x{
+        var result = [];
+        var entries = __fs__.readdirSync(#{dirname});
+        for (var i = 0, ii = entries.length; i < ii; i++) {
+          result.push(entries[i]);
+        }
+        return result;
+      }
+    end
+
+    def glob(pattern)
+      pattern = [pattern] unless pattern.respond_to? :each
+      pattern.flat_map do |subpattern|
+        subpattern = subpattern.to_path if subpattern.respond_to? :to_path
+        subpattern = ::Opal.coerce_to!(subpattern, String, :to_str)
+        `__glob__.sync(subpattern)`
+      end
+    end
+
+    alias getwd pwd
+  end
+end
diff --git a/stdlib/nodejs/env.rb b/stdlib/nodejs/env.rb
new file mode 100644
index 00000000..f63ab209
--- /dev/null
+++ b/stdlib/nodejs/env.rb
@@ -0,0 +1,56 @@
+ENV = Object.new
+
+class << ENV
+  def [](name)
+    `process.env[#{name}] || nil`
+  end
+
+  def []=(name, value)
+    `process.env[#{name.to_s}] = #{value.to_s}`
+  end
+
+  def key?(name)
+    `process.env.hasOwnProperty(#{name})`
+  end
+
+  def empty?
+    `Object.keys(process.env).length === 0`
+  end
+
+  def keys
+    `Object.keys(process.env)`
+  end
+
+  def delete(name)
+    %x{
+      var value = process.env[#{name}] || nil;
+      delete process.env[#{name}];
+      return value;
+    }
+  end
+
+  def fetch(key, default_value = undefined, &block)
+    return self[key] if key?(key)
+    return yield key if block_given?
+    return default_value unless `typeof(#{default_value}) === 'undefined'`
+    raise KeyError, 'key not found'
+  end
+
+  def to_s
+    'ENV'
+  end
+
+  def to_h
+    keys.to_h { |k| [k, self[k]] }
+  end
+
+  def merge(keys)
+    to_h.merge(keys)
+  end
+
+  alias has_key? key?
+  alias include? key?
+  alias inspect to_s
+  alias member? key?
+  alias to_hash to_h
+end
diff --git a/stdlib/nodejs/file.rb b/stdlib/nodejs/file.rb
new file mode 100644
index 00000000..aec855b4
--- /dev/null
+++ b/stdlib/nodejs/file.rb
@@ -0,0 +1,338 @@
+require 'corelib/file'
+
+%x{
+  var warnings = {}, errno_codes = #{Errno.constants};
+
+  function handle_unsupported_feature(message) {
+    switch (Opal.config.unsupported_features_severity) {
+    case 'error':
+      #{Kernel.raise NotImplementedError, `message`}
+      break;
+    case 'warning':
+      warn(message)
+      break;
+    default: // ignore
+      // noop
+    }
+  }
+  function warn(string) {
+    if (warnings[string]) {
+      return;
+    }
+    warnings[string] = true;
+    #{warn(`string`)};
+  }
+  function is_utf8(bytes) {
+    var i = 0;
+    while (i < bytes.length) {
+      if ((// ASCII
+        bytes[i] === 0x09 ||
+        bytes[i] === 0x0A ||
+        bytes[i] === 0x0D ||
+        (0x20 <= bytes[i] && bytes[i] <= 0x7E)
+      )
+      ) {
+        i += 1;
+        continue;
+      }
+
+      if ((// non-overlong 2-byte
+        (0xC2 <= bytes[i] && bytes[i] <= 0xDF) &&
+        (0x80 <= bytes[i + 1] && bytes[i + 1] <= 0xBF)
+      )
+      ) {
+        i += 2;
+        continue;
+      }
+
+      if ((// excluding overlongs
+          bytes[i] === 0xE0 &&
+          (0xA0 <= bytes[i + 1] && bytes[i + 1] <= 0xBF) &&
+          (0x80 <= bytes[i + 2] && bytes[i + 2] <= 0xBF)
+        ) ||
+        (// straight 3-byte
+          ((0xE1 <= bytes[i] && bytes[i] <= 0xEC) ||
+            bytes[i] === 0xEE ||
+            bytes[i] === 0xEF) &&
+          (0x80 <= bytes[i + 1] && bytes[i + 1] <= 0xBF) &&
+          (0x80 <= bytes[i + 2] && bytes[i + 2] <= 0xBF)
+        ) ||
+        (// excluding surrogates
+          bytes[i] === 0xED &&
+          (0x80 <= bytes[i + 1] && bytes[i + 1] <= 0x9F) &&
+          (0x80 <= bytes[i + 2] && bytes[i + 2] <= 0xBF)
+        )
+      ) {
+        i += 3;
+        continue;
+      }
+
+      if ((// planes 1-3
+          bytes[i] === 0xF0 &&
+          (0x90 <= bytes[i + 1] && bytes[i + 1] <= 0xBF) &&
+          (0x80 <= bytes[i + 2] && bytes[i + 2] <= 0xBF) &&
+          (0x80 <= bytes[i + 3] && bytes[i + 3] <= 0xBF)
+        ) ||
+        (// planes 4-15
+          (0xF1 <= bytes[i] && bytes[i] <= 0xF3) &&
+          (0x80 <= bytes[i + 1] && bytes[i + 1] <= 0xBF) &&
+          (0x80 <= bytes[i + 2] && bytes[i + 2] <= 0xBF) &&
+          (0x80 <= bytes[i + 3] && bytes[i + 3] <= 0xBF)
+        ) ||
+        (// plane 16
+          bytes[i] === 0xF4 &&
+          (0x80 <= bytes[i + 1] && bytes[i + 1] <= 0x8F) &&
+          (0x80 <= bytes[i + 2] && bytes[i + 2] <= 0xBF) &&
+          (0x80 <= bytes[i + 3] && bytes[i + 3] <= 0xBF)
+        )
+      ) {
+        i += 4;
+        continue;
+      }
+
+      return false;
+    }
+
+    return true;
+  }
+  function executeIOAction(action) {
+    try {
+      return action();
+    } catch (error) {
+      if (errno_codes.indexOf(error.code) >= 0) {
+        var error_class = #{Errno.const_get(`error.code`)}
+        #{Kernel.raise `error_class`.new(`error.message`)}
+      }
+      #{Kernel.raise error}
+    }
+  }
+}
+
+class File < IO
+  @__fs__ = `require('fs')`
+  @__path__ = `require('path')`
+  @__util__ = `require('util')`
+  `var __fs__ = #{@__fs__}`
+  `var __path__ = #{@__path__}`
+  `var __util__ = #{@__util__}`
+  # Since Node.js 11+ TextEncoder and TextDecoder are now available on the global object.
+  `var __TextEncoder__ = typeof TextEncoder !== 'undefined' ? TextEncoder : __util__.TextEncoder`
+  `var __TextDecoder__ = typeof TextDecoder !== 'undefined' ? TextDecoder : __util__.TextDecoder`
+  `var __utf8TextDecoder__ = new __TextDecoder__('utf8')`
+  `var __textEncoder__ = new __TextEncoder__()`
+
+  if `__path__.sep !== #{Separator}`
+    ALT_SEPARATOR = `__path__.sep`
+  end
+
+
+  def self.read(path)
+    `return executeIOAction(function(){return __fs__.readFileSync(#{path}).toString()})`
+  end
+
+  def self.write(path, data)
+    `executeIOAction(function(){return __fs__.writeFileSync(#{path}, #{data})})`
+    data.size
+  end
+
+  def self.delete(path)
+    `executeIOAction(function(){return __fs__.unlinkSync(#{path})})`
+  end
+
+  class << self
+    alias unlink delete
+  end
+
+  def self.exist?(path)
+    path = path.path if path.respond_to? :path
+    `return executeIOAction(function(){return __fs__.existsSync(#{path})})`
+  end
+
+  def self.realpath(pathname, dir_string = nil, cache = nil, &block)
+    pathname = join(dir_string, pathname) if dir_string
+    if block_given?
+      `
+        __fs__.realpath(#{pathname}, #{cache}, function(error, realpath){
+          if (error) Opal.IOError.$new(error.message)
+          else #{block.call(`realpath`)}
+        })
+        `
+    else
+      `return executeIOAction(function(){return __fs__.realpathSync(#{pathname}, #{cache})})`
+    end
+  end
+
+  def self.join(*paths)
+    # by itself, `path.posix.join` normalizes leading // to /.
+    # restore the leading / on UNC paths (i.e., paths starting with //).
+    prefix = paths.first&.start_with?('//') ? '/' : ''
+    `#{prefix} + __path__.posix.join.apply(__path__, #{paths})`
+  end
+
+  def self.directory?(path)
+    return false unless exist? path
+    result = `executeIOAction(function(){return !!__fs__.lstatSync(path).isDirectory()})`
+    unless result
+      realpath = realpath(path)
+      if realpath != path
+        result = `executeIOAction(function(){return !!__fs__.lstatSync(realpath).isDirectory()})`
+      end
+    end
+    result
+  end
+
+  def self.file?(path)
+    return false unless exist? path
+    result = `executeIOAction(function(){return !!__fs__.lstatSync(path).isFile()})`
+    unless result
+      realpath = realpath(path)
+      if realpath != path
+        result = `executeIOAction(function(){return !!__fs__.lstatSync(realpath).isFile()})`
+      end
+    end
+    result
+  end
+
+  def self.readable?(path)
+    return false unless exist? path
+    %{
+        try {
+          __fs__.accessSync(path, __fs__.R_OK);
+          return true;
+        } catch (error) {
+          return false;
+        }
+      }
+  end
+
+  def self.size(path)
+    `return executeIOAction(function(){return __fs__.lstatSync(path).size})`
+  end
+
+  def self.open(path, mode = 'r')
+    file = new(path, mode)
+    if block_given?
+      begin
+        yield(file)
+      ensure
+        file.close
+      end
+    else
+      file
+    end
+  end
+
+  def self.stat(path)
+    path = path.path if path.respond_to? :path
+    File::Stat.new(path)
+  end
+
+  def self.mtime(path)
+    `return executeIOAction(function(){return __fs__.statSync(#{path}).mtime})`
+  end
+
+  def self.symlink?(path)
+    `return executeIOAction(function(){return __fs__.lstatSync(#{path}).isSymbolicLink()})`
+  end
+
+  def self.absolute_path(path, basedir = nil)
+    path = path.respond_to?(:to_path) ? path.to_path : path
+    basedir ||= Dir.pwd
+    `return __path__.normalize(__path__.resolve(#{basedir.to_str}, #{path.to_str})).split(__path__.sep).join(__path__.posix.sep)`
+  end
+
+  # Instance Methods
+
+  def initialize(path, flags = 'r')
+    @binary_flag = flags.include?('b')
+    # Node does not recognize this flag
+    flags = flags.delete('b')
+    # encoding flag is unsupported
+    encoding_option_rx = /:(.*)/
+    if encoding_option_rx.match?(flags)
+      `handle_unsupported_feature("Encoding option (:encoding) is unsupported by Node.js openSync method and will be removed.")`
+      flags = flags.sub(encoding_option_rx, '')
+    end
+    @path = path
+
+    fd = `executeIOAction(function(){return __fs__.openSync(path, flags)})`
+    super(fd, flags)
+  end
+
+  attr_reader :path
+
+  def sysread(bytes)
+    if @eof
+      raise EOFError, 'end of file reached'
+    else
+      if @binary_flag
+        %x{
+          var buf = executeIOAction(function(){return __fs__.readFileSync(#{@path})})
+          var content
+          if (is_utf8(buf)) {
+            content = buf.toString('utf8')
+          } else {
+            // coerce to utf8
+            content = __utf8TextDecoder__.decode(__textEncoder__.encode(buf.toString('binary')))
+          }
+        }
+        res = `content`
+      else
+        res = `executeIOAction(function(){return __fs__.readFileSync(#{@path}).toString('utf8')})`
+      end
+      @eof = true
+      @lineno = res.size
+      res
+    end
+  end
+
+  def write(string)
+    `executeIOAction(function(){return __fs__.writeSync(#{@fd}, #{string})})`
+  end
+
+  def flush
+    `executeIOAction(function(){return __fs__.fsyncSync(#{@fd})})`
+  end
+
+  def close
+    `executeIOAction(function(){return __fs__.closeSync(#{@fd})})`
+    super
+  end
+
+  def mtime
+    `return executeIOAction(function(){return __fs__.statSync(#{@path}).mtime})`
+  end
+end
+
+class File::Stat
+  @__fs__ = `require('fs')`
+  `var __fs__ = #{@__fs__}`
+
+  def initialize(path)
+    @path = path
+  end
+
+  def file?
+    `return executeIOAction(function(){return __fs__.statSync(#{@path}).isFile()})`
+  end
+
+  def directory?
+    `return executeIOAction(function(){return __fs__.statSync(#{@path}).isDirectory()})`
+  end
+
+  def mtime
+    `return executeIOAction(function(){return __fs__.statSync(#{@path}).mtime})`
+  end
+
+  def readable?
+    `return executeIOAction(function(){return __fs__.accessSync(#{@path}, __fs__.constants.R_OK)})`
+  end
+
+  def writable?
+    `return executeIOAction(function(){return __fs__.accessSync(#{@path}, __fs__.constants.W_OK)})`
+  end
+
+  def executable?
+    `return executeIOAction(function(){return __fs__.accessSync(#{@path}, __fs__.constants.X_OK)})`
+  end
+end
diff --git a/stdlib/nodejs/fileutils.rb b/stdlib/nodejs/fileutils.rb
new file mode 100644
index 00000000..a2e75e0e
--- /dev/null
+++ b/stdlib/nodejs/fileutils.rb
@@ -0,0 +1,33 @@
+module FileUtils
+  extend self
+  `var __fs__ = #{File}.__fs__`
+
+  def chmod(mode, file_list)
+    raise NotImplementedError, 'symbolic mode is not supported, use numeric mode' if String === mode
+    Array(file_list).each do |file|
+      `__fs__.chmodSync(mode, file)`
+    end
+  end
+
+  def cp(source, target)
+    target = File.join(target, File.basename(source)) if File.directory? target
+    `__fs__.writeFileSync(target, __fs__.readFileSync(source))`
+  end
+
+  def rm(path)
+    `__fs__.unlinkSync(path)`
+  end
+
+  def mkdir_p(path)
+    return true if File.directory? path
+    `__fs__.mkdirSync(#{path})`
+  end
+
+  def mv(source, target)
+    target = File.join(target, File.basename(source)) if File.directory? target
+    `__fs__.renameSync(source, target)`
+  end
+
+  alias mkpath mkdir_p
+  alias makedirs mkdir_p
+end
diff --git a/stdlib/nodejs/io.rb b/stdlib/nodejs/io.rb
new file mode 100644
index 00000000..032d2ab4
--- /dev/null
+++ b/stdlib/nodejs/io.rb
@@ -0,0 +1,45 @@
+require 'nodejs/file'
+
+%x{
+  function executeIOAction(action) {
+    try {
+      return action();
+    } catch (error) {
+      if (error.code === 'EACCES' ||
+          error.code === 'EISDIR' ||
+          error.code === 'EMFILE' ||
+          error.code === 'ENOENT' ||
+          error.code === 'EPERM') {
+        throw Opal.IOError.$new(error.message)
+      }
+      throw error;
+    }
+  }
+}
+
+`var __fs__ = require('fs')`
+
+class IO
+  @__fs__ = `__fs__`
+
+  attr_reader :lineno
+
+  alias initialize_before_node_io initialize
+
+  def initialize(fd, flags = 'r')
+    @lineno = 0
+    initialize_before_node_io(fd, flags)
+  end
+
+  def self.write(path, data)
+    File.write(path, data)
+  end
+
+  def self.read(path)
+    File.read(path)
+  end
+
+  def self.binread(path)
+    `return executeIOAction(function(){return __fs__.readFileSync(#{path}).toString('binary')})`
+  end
+end
diff --git a/stdlib/nodejs/irb.rb b/stdlib/nodejs/irb.rb
new file mode 100644
index 00000000..1ba06527
--- /dev/null
+++ b/stdlib/nodejs/irb.rb
@@ -0,0 +1,43 @@
+require 'native'
+
+NodeRepl = Native(`OpalNode.node_require('repl')`)
+
+def NodeRepl.start(options = {})
+  Native::Object.new(`#{@native}.start(#{options.to_n})`)
+end
+
+line = 1
+prompt_interrupted = false
+
+prompt = ->(context) {
+  tip = prompt_interrupted ? '*' : '>'
+  "irb(#{context}):#{line.to_s.rjust(3, '0')}#{tip} "
+}
+
+$repl = NodeRepl.start(
+  prompt: prompt.call(self),
+  useGlobal: true,
+  ignoreUndefined: true,
+  eval: ->(cmd, context, filename, callback) {
+    line += 1
+    cmd = cmd[1...-1].chomp
+    if cmd.empty?
+      prompt_interrupted = true
+      $repl.prompt = prompt.call(self)
+      callback.call('')
+      next
+    end
+    prompt_interrupted = false
+    $repl.prompt = prompt.call(self)
+    begin
+      result = `OpalNode.run(cmd, filename)`
+      result = nil if `#{result} == nil`
+      callback.call('=> ' + result.inspect)
+    rescue => e
+      callback.call(e.backtrace.join("\n"))
+    end
+  },
+)
+
+# Add a newline before exiting
+$repl.on :exit, -> { puts }
diff --git a/stdlib/nodejs/js-yaml-3-6-1.js b/stdlib/nodejs/js-yaml-3-6-1.js
new file mode 100644
index 00000000..c56aa73f
--- /dev/null
+++ b/stdlib/nodejs/js-yaml-3-6-1.js
@@ -0,0 +1,3855 @@
+// https://github.com/nodeca/js-yaml/blob/3.6.1/dist/js-yaml.js (c76b837cacc69de6b86a0781db31a9bb7a193875)
+
+/* eslint-disable */
+/* js-yaml 3.6.1 https://github.com/nodeca/js-yaml */(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.jsyaml = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
+'use strict';
+
+
+var loader = require('./js-yaml/loader');
+var dumper = require('./js-yaml/dumper');
+
+
+function deprecated(name) {
+  return function () {
+    throw new Error('Function ' + name + ' is deprecated and cannot be used.');
+  };
+}
+
+
+module.exports.Type                = require('./js-yaml/type');
+module.exports.Schema              = require('./js-yaml/schema');
+module.exports.FAILSAFE_SCHEMA     = require('./js-yaml/schema/failsafe');
+module.exports.JSON_SCHEMA         = require('./js-yaml/schema/json');
+module.exports.CORE_SCHEMA         = require('./js-yaml/schema/core');
+module.exports.DEFAULT_SAFE_SCHEMA = require('./js-yaml/schema/default_safe');
+module.exports.DEFAULT_FULL_SCHEMA = require('./js-yaml/schema/default_full');
+module.exports.load                = loader.load;
+module.exports.loadAll             = loader.loadAll;
+module.exports.safeLoad            = loader.safeLoad;
+module.exports.safeLoadAll         = loader.safeLoadAll;
+module.exports.dump                = dumper.dump;
+module.exports.safeDump            = dumper.safeDump;
+module.exports.YAMLException       = require('./js-yaml/exception');
+
+// Deprecated schema names from JS-YAML 2.0.x
+module.exports.MINIMAL_SCHEMA = require('./js-yaml/schema/failsafe');
+module.exports.SAFE_SCHEMA    = require('./js-yaml/schema/default_safe');
+module.exports.DEFAULT_SCHEMA = require('./js-yaml/schema/default_full');
+
+// Deprecated functions from JS-YAML 1.x.x
+module.exports.scan           = deprecated('scan');
+module.exports.parse          = deprecated('parse');
+module.exports.compose        = deprecated('compose');
+module.exports.addConstructor = deprecated('addConstructor');
+
+},{"./js-yaml/dumper":3,"./js-yaml/exception":4,"./js-yaml/loader":5,"./js-yaml/schema":7,"./js-yaml/schema/core":8,"./js-yaml/schema/default_full":9,"./js-yaml/schema/default_safe":10,"./js-yaml/schema/failsafe":11,"./js-yaml/schema/json":12,"./js-yaml/type":13}],2:[function(require,module,exports){
+'use strict';
+
+
+function isNothing(subject) {
+  return (typeof subject === 'undefined') || (subject === null);
+}
+
+
+function isObject(subject) {
+  return (typeof subject === 'object') && (subject !== null);
+}
+
+
+function toArray(sequence) {
+  if (Array.isArray(sequence)) return sequence;
+  else if (isNothing(sequence)) return [];
+
+  return [ sequence ];
+}
+
+
+function extend(target, source) {
+  var index, length, key, sourceKeys;
+
+  if (source) {
+    sourceKeys = Object.keys(source);
+
+    for (index = 0, length = sourceKeys.length; index < length; index += 1) {
+      key = sourceKeys[index];
+      target[key] = source[key];
+    }
+  }
+
+  return target;
+}
+
+
+function repeat(string, count) {
+  var result = '', cycle;
+
+  for (cycle = 0; cycle < count; cycle += 1) {
+    result += string;
+  }
+
+  return result;
+}
+
+
+function isNegativeZero(number) {
+  return (number === 0) && (Number.NEGATIVE_INFINITY === 1 / number);
+}
+
+
+module.exports.isNothing      = isNothing;
+module.exports.isObject       = isObject;
+module.exports.toArray        = toArray;
+module.exports.repeat         = repeat;
+module.exports.isNegativeZero = isNegativeZero;
+module.exports.extend         = extend;
+
+},{}],3:[function(require,module,exports){
+'use strict';
+
+/*eslint-disable no-use-before-define*/
+
+var common              = require('./common');
+var YAMLException       = require('./exception');
+var DEFAULT_FULL_SCHEMA = require('./schema/default_full');
+var DEFAULT_SAFE_SCHEMA = require('./schema/default_safe');
+
+var _toString       = Object.prototype.toString;
+var _hasOwnProperty = Object.prototype.hasOwnProperty;
+
+var CHAR_TAB                  = 0x09; /* Tab */
+var CHAR_LINE_FEED            = 0x0A; /* LF */
+var CHAR_SPACE                = 0x20; /* Space */
+var CHAR_EXCLAMATION          = 0x21; /* ! */
+var CHAR_DOUBLE_QUOTE         = 0x22; /* " */
+var CHAR_SHARP                = 0x23; /* # */
+var CHAR_PERCENT              = 0x25; /* % */
+var CHAR_AMPERSAND            = 0x26; /* & */
+var CHAR_SINGLE_QUOTE         = 0x27; /* ' */
+var CHAR_ASTERISK             = 0x2A; /* * */
+var CHAR_COMMA                = 0x2C; /* , */
+var CHAR_MINUS                = 0x2D; /* - */
+var CHAR_COLON                = 0x3A; /* : */
+var CHAR_GREATER_THAN         = 0x3E; /* > */
+var CHAR_QUESTION             = 0x3F; /* ? */
+var CHAR_COMMERCIAL_AT        = 0x40; /* @ */
+var CHAR_LEFT_SQUARE_BRACKET  = 0x5B; /* [ */
+var CHAR_RIGHT_SQUARE_BRACKET = 0x5D; /* ] */
+var CHAR_GRAVE_ACCENT         = 0x60; /* ` */
+var CHAR_LEFT_CURLY_BRACKET   = 0x7B; /* { */
+var CHAR_VERTICAL_LINE        = 0x7C; /* | */
+var CHAR_RIGHT_CURLY_BRACKET  = 0x7D; /* } */
+
+var ESCAPE_SEQUENCES = {};
+
+ESCAPE_SEQUENCES[0x00]   = '\\0';
+ESCAPE_SEQUENCES[0x07]   = '\\a';
+ESCAPE_SEQUENCES[0x08]   = '\\b';
+ESCAPE_SEQUENCES[0x09]   = '\\t';
+ESCAPE_SEQUENCES[0x0A]   = '\\n';
+ESCAPE_SEQUENCES[0x0B]   = '\\v';
+ESCAPE_SEQUENCES[0x0C]   = '\\f';
+ESCAPE_SEQUENCES[0x0D]   = '\\r';
+ESCAPE_SEQUENCES[0x1B]   = '\\e';
+ESCAPE_SEQUENCES[0x22]   = '\\"';
+ESCAPE_SEQUENCES[0x5C]   = '\\\\';
+ESCAPE_SEQUENCES[0x85]   = '\\N';
+ESCAPE_SEQUENCES[0xA0]   = '\\_';
+ESCAPE_SEQUENCES[0x2028] = '\\L';
+ESCAPE_SEQUENCES[0x2029] = '\\P';
+
+var DEPRECATED_BOOLEANS_SYNTAX = [
+  'y', 'Y', 'yes', 'Yes', 'YES', 'on', 'On', 'ON',
+  'n', 'N', 'no', 'No', 'NO', 'off', 'Off', 'OFF'
+];
+
+function compileStyleMap(schema, map) {
+  var result, keys, index, length, tag, style, type;
+
+  if (map === null) return {};
+
+  result = {};
+  keys = Object.keys(map);
+
+  for (index = 0, length = keys.length; index < length; index += 1) {
+    tag = keys[index];
+    style = String(map[tag]);
+
+    if (tag.slice(0, 2) === '!!') {
+      tag = 'tag:yaml.org,2002:' + tag.slice(2);
+    }
+
+    type = schema.compiledTypeMap[tag];
+
+    if (type && _hasOwnProperty.call(type.styleAliases, style)) {
+      style = type.styleAliases[style];
+    }
+
+    result[tag] = style;
+  }
+
+  return result;
+}
+
+function encodeHex(character) {
+  var string, handle, length;
+
+  string = character.toString(16).toUpperCase();
+
+  if (character <= 0xFF) {
+    handle = 'x';
+    length = 2;
+  } else if (character <= 0xFFFF) {
+    handle = 'u';
+    length = 4;
+  } else if (character <= 0xFFFFFFFF) {
+    handle = 'U';
+    length = 8;
+  } else {
+    throw new YAMLException('code point within a string may not be greater than 0xFFFFFFFF');
+  }
+
+  return '\\' + handle + common.repeat('0', length - string.length) + string;
+}
+
+function State(options) {
+  this.schema       = options['schema'] || DEFAULT_FULL_SCHEMA;
+  this.indent       = Math.max(1, (options['indent'] || 2));
+  this.skipInvalid  = options['skipInvalid'] || false;
+  this.flowLevel    = (common.isNothing(options['flowLevel']) ? -1 : options['flowLevel']);
+  this.styleMap     = compileStyleMap(this.schema, options['styles'] || null);
+  this.sortKeys     = options['sortKeys'] || false;
+  this.lineWidth    = options['lineWidth'] || 80;
+  this.noRefs       = options['noRefs'] || false;
+  this.noCompatMode = options['noCompatMode'] || false;
+
+  this.implicitTypes = this.schema.compiledImplicit;
+  this.explicitTypes = this.schema.compiledExplicit;
+
+  this.tag = null;
+  this.result = '';
+
+  this.duplicates = [];
+  this.usedDuplicates = null;
+}
+
+// Indents every line in a string. Empty lines (\n only) are not indented.
+function indentString(string, spaces) {
+  var ind = common.repeat(' ', spaces),
+      position = 0,
+      next = -1,
+      result = '',
+      line,
+      length = string.length;
+
+  while (position < length) {
+    next = string.indexOf('\n', position);
+    if (next === -1) {
+      line = string.slice(position);
+      position = length;
+    } else {
+      line = string.slice(position, next + 1);
+      position = next + 1;
+    }
+
+    if (line.length && line !== '\n') result += ind;
+
+    result += line;
+  }
+
+  return result;
+}
+
+function generateNextLine(state, level) {
+  return '\n' + common.repeat(' ', state.indent * level);
+}
+
+function testImplicitResolving(state, str) {
+  var index, length, type;
+
+  for (index = 0, length = state.implicitTypes.length; index < length; index += 1) {
+    type = state.implicitTypes[index];
+
+    if (type.resolve(str)) {
+      return true;
+    }
+  }
+
+  return false;
+}
+
+// [33] s-white ::= s-space | s-tab
+function isWhitespace(c) {
+  return c === CHAR_SPACE || c === CHAR_TAB;
+}
+
+// Returns true if the character can be printed without escaping.
+// From YAML 1.2: "any allowed characters known to be non-printable
+// should also be escaped. [However,] This isn’t mandatory"
+// Derived from nb-char - \t - #x85 - #xA0 - #x2028 - #x2029.
+function isPrintable(c) {
+  return  (0x00020 <= c && c <= 0x00007E)
+      || ((0x000A1 <= c && c <= 0x00D7FF) && c !== 0x2028 && c !== 0x2029)
+      || ((0x0E000 <= c && c <= 0x00FFFD) && c !== 0xFEFF /* BOM */)
+      ||  (0x10000 <= c && c <= 0x10FFFF);
+}
+
+// Simplified test for values allowed after the first character in plain style.
+function isPlainSafe(c) {
+  // Uses a subset of nb-char - c-flow-indicator - ":" - "#"
+  // where nb-char ::= c-printable - b-char - c-byte-order-mark.
+  return isPrintable(c) && c !== 0xFEFF
+    // - c-flow-indicator
+    && c !== CHAR_COMMA
+    && c !== CHAR_LEFT_SQUARE_BRACKET
+    && c !== CHAR_RIGHT_SQUARE_BRACKET
+    && c !== CHAR_LEFT_CURLY_BRACKET
+    && c !== CHAR_RIGHT_CURLY_BRACKET
+    // - ":" - "#"
+    && c !== CHAR_COLON
+    && c !== CHAR_SHARP;
+}
+
+// Simplified test for values allowed as the first character in plain style.
+function isPlainSafeFirst(c) {
+  // Uses a subset of ns-char - c-indicator
+  // where ns-char = nb-char - s-white.
+  return isPrintable(c) && c !== 0xFEFF
+    && !isWhitespace(c) // - s-white
+    // - (c-indicator ::=
+    // “-” | “?” | “:” | “,” | “[” | “]” | “{” | “}”
+    && c !== CHAR_MINUS
+    && c !== CHAR_QUESTION
+    && c !== CHAR_COLON
+    && c !== CHAR_COMMA
+    && c !== CHAR_LEFT_SQUARE_BRACKET
+    && c !== CHAR_RIGHT_SQUARE_BRACKET
+    && c !== CHAR_LEFT_CURLY_BRACKET
+    && c !== CHAR_RIGHT_CURLY_BRACKET
+    // | “#” | “&” | “*” | “!” | “|” | “>” | “'” | “"”
+    && c !== CHAR_SHARP
+    && c !== CHAR_AMPERSAND
+    && c !== CHAR_ASTERISK
+    && c !== CHAR_EXCLAMATION
+    && c !== CHAR_VERTICAL_LINE
+    && c !== CHAR_GREATER_THAN
+    && c !== CHAR_SINGLE_QUOTE
+    && c !== CHAR_DOUBLE_QUOTE
+    // | “%” | “@” | “`”)
+    && c !== CHAR_PERCENT
+    && c !== CHAR_COMMERCIAL_AT
+    && c !== CHAR_GRAVE_ACCENT;
+}
+
+var STYLE_PLAIN   = 1,
+    STYLE_SINGLE  = 2,
+    STYLE_LITERAL = 3,
+    STYLE_FOLDED  = 4,
+    STYLE_DOUBLE  = 5;
+
+// Determines which scalar styles are possible and returns the preferred style.
+// lineWidth = -1 => no limit.
+// Pre-conditions: str.length > 0.
+// Post-conditions:
+//    STYLE_PLAIN or STYLE_SINGLE => no \n are in the string.
+//    STYLE_LITERAL => no lines are suitable for folding (or lineWidth is -1).
+//    STYLE_FOLDED => a line > lineWidth and can be folded (and lineWidth != -1).
+function chooseScalarStyle(string, singleLineOnly, indentPerLevel, lineWidth, testAmbiguousType) {
+  var i;
+  var char;
+  var hasLineBreak = false;
+  var hasFoldableLine = false; // only checked if shouldTrackWidth
+  var shouldTrackWidth = lineWidth !== -1;
+  var previousLineBreak = -1; // count the first line correctly
+  var plain = isPlainSafeFirst(string.charCodeAt(0))
+          && !isWhitespace(string.charCodeAt(string.length - 1));
+
+  if (singleLineOnly) {
+    // Case: no block styles.
+    // Check for disallowed characters to rule out plain and single.
+    for (i = 0; i < string.length; i++) {
+      char = string.charCodeAt(i);
+      if (!isPrintable(char)) {
+        return STYLE_DOUBLE;
+      }
+      plain = plain && isPlainSafe(char);
+    }
+  } else {
+    // Case: block styles permitted.
+    for (i = 0; i < string.length; i++) {
+      char = string.charCodeAt(i);
+      if (char === CHAR_LINE_FEED) {
+        hasLineBreak = true;
+        // Check if any line can be folded.
+        if (shouldTrackWidth) {
+          hasFoldableLine = hasFoldableLine ||
+            // Foldable line = too long, and not more-indented.
+            (i - previousLineBreak - 1 > lineWidth &&
+             string[previousLineBreak + 1] !== ' ');
+          previousLineBreak = i;
+        }
+      } else if (!isPrintable(char)) {
+        return STYLE_DOUBLE;
+      }
+      plain = plain && isPlainSafe(char);
+    }
+    // in case the end is missing a \n
+    hasFoldableLine = hasFoldableLine || (shouldTrackWidth &&
+      (i - previousLineBreak - 1 > lineWidth &&
+       string[previousLineBreak + 1] !== ' '));
+  }
+  // Although every style can represent \n without escaping, prefer block styles
+  // for multiline, since they're more readable and they don't add empty lines.
+  // Also prefer folding a super-long line.
+  if (!hasLineBreak && !hasFoldableLine) {
+    // Strings interpretable as another type have to be quoted;
+    // e.g. the string 'true' vs. the boolean true.
+    return plain && !testAmbiguousType(string)
+      ? STYLE_PLAIN : STYLE_SINGLE;
+  }
+  // Edge case: block indentation indicator can only have one digit.
+  if (string[0] === ' ' && indentPerLevel > 9) {
+    return STYLE_DOUBLE;
+  }
+  // At this point we know block styles are valid.
+  // Prefer literal style unless we want to fold.
+  return hasFoldableLine ? STYLE_FOLDED : STYLE_LITERAL;
+}
+
+// Note: line breaking/folding is implemented for only the folded style.
+// NB. We drop the last trailing newline (if any) of a returned block scalar
+//  since the dumper adds its own newline. This always works:
+//    • No ending newline => unaffected; already using strip "-" chomping.
+//    • Ending newline    => removed then restored.
+//  Importantly, this keeps the "+" chomp indicator from gaining an extra line.
+function writeScalar(state, string, level, iskey) {
+  state.dump = (function () {
+    if (string.length === 0) {
+      return "''";
+    }
+    if (!state.noCompatMode &&
+        DEPRECATED_BOOLEANS_SYNTAX.indexOf(string) !== -1) {
+      return "'" + string + "'";
+    }
+
+    var indent = state.indent * Math.max(1, level); // no 0-indent scalars
+    // As indentation gets deeper, let the width decrease monotonically
+    // to the lower bound min(state.lineWidth, 40).
+    // Note that this implies
+    //  state.lineWidth ≤ 40 + state.indent: width is fixed at the lower bound.
+    //  state.lineWidth > 40 + state.indent: width decreases until the lower bound.
+    // This behaves better than a constant minimum width which disallows narrower options,
+    // or an indent threshold which causes the width to suddenly increase.
+    var lineWidth = state.lineWidth === -1
+      ? -1 : Math.max(Math.min(state.lineWidth, 40), state.lineWidth - indent);
+
+    // Without knowing if keys are implicit/explicit, assume implicit for safety.
+    var singleLineOnly = iskey
+      // No block styles in flow mode.
+      || (state.flowLevel > -1 && level >= state.flowLevel);
+    function testAmbiguity(string) {
+      return testImplicitResolving(state, string);
+    }
+
+    switch (chooseScalarStyle(string, singleLineOnly, state.indent, lineWidth, testAmbiguity)) {
+      case STYLE_PLAIN:
+        return string;
+      case STYLE_SINGLE:
+        return "'" + string.replace(/'/g, "''") + "'";
+      case STYLE_LITERAL:
+        return '|' + blockHeader(string, state.indent)
+          + dropEndingNewline(indentString(string, indent));
+      case STYLE_FOLDED:
+        return '>' + blockHeader(string, state.indent)
+          + dropEndingNewline(indentString(foldString(string, lineWidth), indent));
+      case STYLE_DOUBLE:
+        return '"' + escapeString(string, lineWidth) + '"';
+      default:
+        throw new YAMLException('impossible error: invalid scalar style');
+    }
+  }());
+}
+
+// Pre-conditions: string is valid for a block scalar, 1 <= indentPerLevel <= 9.
+function blockHeader(string, indentPerLevel) {
+  var indentIndicator = (string[0] === ' ') ? String(indentPerLevel) : '';
+
+  // note the special case: the string '\n' counts as a "trailing" empty line.
+  var clip =          string[string.length - 1] === '\n';
+  var keep = clip && (string[string.length - 2] === '\n' || string === '\n');
+  var chomp = keep ? '+' : (clip ? '' : '-');
+
+  return indentIndicator + chomp + '\n';
+}
+
+// (See the note for writeScalar.)
+function dropEndingNewline(string) {
+  return string[string.length - 1] === '\n' ? string.slice(0, -1) : string;
+}
+
+// Note: a long line without a suitable break point will exceed the width limit.
+// Pre-conditions: every char in str isPrintable, str.length > 0, width > 0.
+function foldString(string, width) {
+  // In folded style, $k$ consecutive newlines output as $k+1$ newlines—
+  // unless they're before or after a more-indented line, or at the very
+  // beginning or end, in which case $k$ maps to $k$.
+  // Therefore, parse each chunk as newline(s) followed by a content line.
+  var lineRe = /(\n+)([^\n]*)/g;
+
+  // first line (possibly an empty line)
+  var result = (function () {
+    var nextLF = string.indexOf('\n');
+    nextLF = nextLF !== -1 ? nextLF : string.length;
+    lineRe.lastIndex = nextLF;
+    return foldLine(string.slice(0, nextLF), width);
+  }());
+  // If we haven't reached the first content line yet, don't add an extra \n.
+  var prevMoreIndented = string[0] === '\n' || string[0] === ' ';
+  var moreIndented;
+
+  // rest of the lines
+  var match;
+  while ((match = lineRe.exec(string))) {
+    var prefix = match[1], line = match[2];
+    moreIndented = (line[0] === ' ');
+    result += prefix
+      + (!prevMoreIndented && !moreIndented && line !== ''
+        ? '\n' : '')
+      + foldLine(line, width);
+    prevMoreIndented = moreIndented;
+  }
+
+  return result;
+}
+
+// Greedy line breaking.
+// Picks the longest line under the limit each time,
+// otherwise settles for the shortest line over the limit.
+// NB. More-indented lines *cannot* be folded, as that would add an extra \n.
+function foldLine(line, width) {
+  if (line === '' || line[0] === ' ') return line;
+
+  // Since a more-indented line adds a \n, breaks can't be followed by a space.
+  var breakRe = / [^ ]/g; // note: the match index will always be <= length-2.
+  var match;
+  // start is an inclusive index. end, curr, and next are exclusive.
+  var start = 0, end, curr = 0, next = 0;
+  var result = '';
+
+  // Invariants: 0 <= start <= length-1.
+  //   0 <= curr <= next <= max(0, length-2). curr - start <= width.
+  // Inside the loop:
+  //   A match implies length >= 2, so curr and next are <= length-2.
+  while ((match = breakRe.exec(line))) {
+    next = match.index;
+    // maintain invariant: curr - start <= width
+    if (next - start > width) {
+      end = (curr > start) ? curr : next; // derive end <= length-2
+      result += '\n' + line.slice(start, end);
+      // skip the space that was output as \n
+      start = end + 1;                    // derive start <= length-1
+    }
+    curr = next;
+  }
+
+  // By the invariants, start <= length-1, so there is something left over.
+  // It is either the whole string or a part starting from non-whitespace.
+  result += '\n';
+  // Insert a break if the remainder is too long and there is a break available.
+  if (line.length - start > width && curr > start) {
+    result += line.slice(start, curr) + '\n' + line.slice(curr + 1);
+  } else {
+    result += line.slice(start);
+  }
+
+  return result.slice(1); // drop extra \n joiner
+}
+
+// Escapes a double-quoted string.
+function escapeString(string) {
+  var result = '';
+  var char;
+  var escapeSeq;
+
+  for (var i = 0; i < string.length; i++) {
+    char = string.charCodeAt(i);
+    escapeSeq = ESCAPE_SEQUENCES[char];
+    result += !escapeSeq && isPrintable(char)
+      ? string[i]
+      : escapeSeq || encodeHex(char);
+  }
+
+  return result;
+}
+
+function writeFlowSequence(state, level, object) {
+  var _result = '',
+      _tag    = state.tag,
+      index,
+      length;
+
+  for (index = 0, length = object.length; index < length; index += 1) {
+    // Write only valid elements.
+    if (writeNode(state, level, object[index], false, false)) {
+      if (index !== 0) _result += ', ';
+      _result += state.dump;
+    }
+  }
+
+  state.tag = _tag;
+  state.dump = '[' + _result + ']';
+}
+
+function writeBlockSequence(state, level, object, compact) {
+  var _result = '',
+      _tag    = state.tag,
+      index,
+      length;
+
+  for (index = 0, length = object.length; index < length; index += 1) {
+    // Write only valid elements.
+    if (writeNode(state, level + 1, object[index], true, true)) {
+      if (!compact || index !== 0) {
+        _result += generateNextLine(state, level);
+      }
+      _result += '- ' + state.dump;
+    }
+  }
+
+  state.tag = _tag;
+  state.dump = _result || '[]'; // Empty sequence if no valid values.
+}
+
+function writeFlowMapping(state, level, object) {
+  var _result       = '',
+      _tag          = state.tag,
+      objectKeyList = Object.keys(object),
+      index,
+      length,
+      objectKey,
+      objectValue,
+      pairBuffer;
+
+  for (index = 0, length = objectKeyList.length; index < length; index += 1) {
+    pairBuffer = '';
+
+    if (index !== 0) pairBuffer += ', ';
+
+    objectKey = objectKeyList[index];
+    objectValue = object[objectKey];
+
+    if (!writeNode(state, level, objectKey, false, false)) {
+      continue; // Skip this pair because of invalid key;
+    }
+
+    if (state.dump.length > 1024) pairBuffer += '? ';
+
+    pairBuffer += state.dump + ': ';
+
+    if (!writeNode(state, level, objectValue, false, false)) {
+      continue; // Skip this pair because of invalid value.
+    }
+
+    pairBuffer += state.dump;
+
+    // Both key and value are valid.
+    _result += pairBuffer;
+  }
+
+  state.tag = _tag;
+  state.dump = '{' + _result + '}';
+}
+
+function writeBlockMapping(state, level, object, compact) {
+  var _result       = '',
+      _tag          = state.tag,
+      objectKeyList = Object.keys(object),
+      index,
+      length,
+      objectKey,
+      objectValue,
+      explicitPair,
+      pairBuffer;
+
+  // Allow sorting keys so that the output file is deterministic
+  if (state.sortKeys === true) {
+    // Default sorting
+    objectKeyList.sort();
+  } else if (typeof state.sortKeys === 'function') {
+    // Custom sort function
+    objectKeyList.sort(state.sortKeys);
+  } else if (state.sortKeys) {
+    // Something is wrong
+    throw new YAMLException('sortKeys must be a boolean or a function');
+  }
+
+  for (index = 0, length = objectKeyList.length; index < length; index += 1) {
+    pairBuffer = '';
+
+    if (!compact || index !== 0) {
+      pairBuffer += generateNextLine(state, level);
+    }
+
+    objectKey = objectKeyList[index];
+    objectValue = object[objectKey];
+
+    if (!writeNode(state, level + 1, objectKey, true, true, true)) {
+      continue; // Skip this pair because of invalid key.
+    }
+
+    explicitPair = (state.tag !== null && state.tag !== '?') ||
+                   (state.dump && state.dump.length > 1024);
+
+    if (explicitPair) {
+      if (state.dump && CHAR_LINE_FEED === state.dump.charCodeAt(0)) {
+        pairBuffer += '?';
+      } else {
+        pairBuffer += '? ';
+      }
+    }
+
+    pairBuffer += state.dump;
+
+    if (explicitPair) {
+      pairBuffer += generateNextLine(state, level);
+    }
+
+    if (!writeNode(state, level + 1, objectValue, true, explicitPair)) {
+      continue; // Skip this pair because of invalid value.
+    }
+
+    if (state.dump && CHAR_LINE_FEED === state.dump.charCodeAt(0)) {
+      pairBuffer += ':';
+    } else {
+      pairBuffer += ': ';
+    }
+
+    pairBuffer += state.dump;
+
+    // Both key and value are valid.
+    _result += pairBuffer;
+  }
+
+  state.tag = _tag;
+  state.dump = _result || '{}'; // Empty mapping if no valid pairs.
+}
+
+function detectType(state, object, explicit) {
+  var _result, typeList, index, length, type, style;
+
+  typeList = explicit ? state.explicitTypes : state.implicitTypes;
+
+  for (index = 0, length = typeList.length; index < length; index += 1) {
+    type = typeList[index];
+
+    if ((type.instanceOf  || type.predicate) &&
+        (!type.instanceOf || ((typeof object === 'object') && (object instanceof type.instanceOf))) &&
+        (!type.predicate  || type.predicate(object))) {
+
+      state.tag = explicit ? type.tag : '?';
+
+      if (type.represent) {
+        style = state.styleMap[type.tag] || type.defaultStyle;
+
+        if (_toString.call(type.represent) === '[object Function]') {
+          _result = type.represent(object, style);
+        } else if (_hasOwnProperty.call(type.represent, style)) {
+          _result = type.represent[style](object, style);
+        } else {
+          throw new YAMLException('!<' + type.tag + '> tag resolver accepts not "' + style + '" style');
+        }
+
+        state.dump = _result;
+      }
+
+      return true;
+    }
+  }
+
+  return false;
+}
+
+// Serializes `object` and writes it to global `result`.
+// Returns true on success, or false on invalid object.
+//
+function writeNode(state, level, object, block, compact, iskey) {
+  state.tag = null;
+  state.dump = object;
+
+  if (!detectType(state, object, false)) {
+    detectType(state, object, true);
+  }
+
+  var type = _toString.call(state.dump);
+
+  if (block) {
+    block = (state.flowLevel < 0 || state.flowLevel > level);
+  }
+
+  var objectOrArray = type === '[object Object]' || type === '[object Array]',
+      duplicateIndex,
+      duplicate;
+
+  if (objectOrArray) {
+    duplicateIndex = state.duplicates.indexOf(object);
+    duplicate = duplicateIndex !== -1;
+  }
+
+  if ((state.tag !== null && state.tag !== '?') || duplicate || (state.indent !== 2 && level > 0)) {
+    compact = false;
+  }
+
+  if (duplicate && state.usedDuplicates[duplicateIndex]) {
+    state.dump = '*ref_' + duplicateIndex;
+  } else {
+    if (objectOrArray && duplicate && !state.usedDuplicates[duplicateIndex]) {
+      state.usedDuplicates[duplicateIndex] = true;
+    }
+    if (type === '[object Object]') {
+      if (block && (Object.keys(state.dump).length !== 0)) {
+        writeBlockMapping(state, level, state.dump, compact);
+        if (duplicate) {
+          state.dump = '&ref_' + duplicateIndex + state.dump;
+        }
+      } else {
+        writeFlowMapping(state, level, state.dump);
+        if (duplicate) {
+          state.dump = '&ref_' + duplicateIndex + ' ' + state.dump;
+        }
+      }
+    } else if (type === '[object Array]') {
+      if (block && (state.dump.length !== 0)) {
+        writeBlockSequence(state, level, state.dump, compact);
+        if (duplicate) {
+          state.dump = '&ref_' + duplicateIndex + state.dump;
+        }
+      } else {
+        writeFlowSequence(state, level, state.dump);
+        if (duplicate) {
+          state.dump = '&ref_' + duplicateIndex + ' ' + state.dump;
+        }
+      }
+    } else if (type === '[object String]') {
+      if (state.tag !== '?') {
+        writeScalar(state, state.dump, level, iskey);
+      }
+    } else {
+      if (state.skipInvalid) return false;
+      throw new YAMLException('unacceptable kind of an object to dump ' + type);
+    }
+
+    if (state.tag !== null && state.tag !== '?') {
+      state.dump = '!<' + state.tag + '> ' + state.dump;
+    }
+  }
+
+  return true;
+}
+
+function getDuplicateReferences(object, state) {
+  var objects = [],
+      duplicatesIndexes = [],
+      index,
+      length;
+
+  inspectNode(object, objects, duplicatesIndexes);
+
+  for (index = 0, length = duplicatesIndexes.length; index < length; index += 1) {
+    state.duplicates.push(objects[duplicatesIndexes[index]]);
+  }
+  state.usedDuplicates = new Array(length);
+}
+
+function inspectNode(object, objects, duplicatesIndexes) {
+  var objectKeyList,
+      index,
+      length;
+
+  if (object !== null && typeof object === 'object') {
+    index = objects.indexOf(object);
+    if (index !== -1) {
+      if (duplicatesIndexes.indexOf(index) === -1) {
+        duplicatesIndexes.push(index);
+      }
+    } else {
+      objects.push(object);
+
+      if (Array.isArray(object)) {
+        for (index = 0, length = object.length; index < length; index += 1) {
+          inspectNode(object[index], objects, duplicatesIndexes);
+        }
+      } else {
+        objectKeyList = Object.keys(object);
+
+        for (index = 0, length = objectKeyList.length; index < length; index += 1) {
+          inspectNode(object[objectKeyList[index]], objects, duplicatesIndexes);
+        }
+      }
+    }
+  }
+}
+
+function dump(input, options) {
+  options = options || {};
+
+  var state = new State(options);
+
+  if (!state.noRefs) getDuplicateReferences(input, state);
+
+  if (writeNode(state, 0, input, true, true)) return state.dump + '\n';
+
+  return '';
+}
+
+function safeDump(input, options) {
+  return dump(input, common.extend({ schema: DEFAULT_SAFE_SCHEMA }, options));
+}
+
+module.exports.dump     = dump;
+module.exports.safeDump = safeDump;
+
+},{"./common":2,"./exception":4,"./schema/default_full":9,"./schema/default_safe":10}],4:[function(require,module,exports){
+// YAML error class. http://stackoverflow.com/questions/8458984
+//
+'use strict';
+
+function YAMLException(reason, mark) {
+  // Super constructor
+  Error.call(this);
+
+  // Include stack trace in error object
+  if (Error.captureStackTrace) {
+    // Chrome and NodeJS
+    Error.captureStackTrace(this, this.constructor);
+  } else {
+    // FF, IE 10+ and Safari 6+. Fallback for others
+    this.stack = (new Error()).stack || '';
+  }
+
+  this.name = 'YAMLException';
+  this.reason = reason;
+  this.mark = mark;
+  this.message = (this.reason || '(unknown reason)') + (this.mark ? ' ' + this.mark.toString() : '');
+}
+
+
+// Inherit from Error
+YAMLException.prototype = Object.create(Error.prototype);
+YAMLException.prototype.constructor = YAMLException;
+
+
+YAMLException.prototype.toString = function toString(compact) {
+  var result = this.name + ': ';
+
+  result += this.reason || '(unknown reason)';
+
+  if (!compact && this.mark) {
+    result += ' ' + this.mark.toString();
+  }
+
+  return result;
+};
+
+
+module.exports = YAMLException;
+
+},{}],5:[function(require,module,exports){
+'use strict';
+
+/*eslint-disable max-len,no-use-before-define*/
+
+var common              = require('./common');
+var YAMLException       = require('./exception');
+var Mark                = require('./mark');
+var DEFAULT_SAFE_SCHEMA = require('./schema/default_safe');
+var DEFAULT_FULL_SCHEMA = require('./schema/default_full');
+
+
+var _hasOwnProperty = Object.prototype.hasOwnProperty;
+
+
+var CONTEXT_FLOW_IN   = 1;
+var CONTEXT_FLOW_OUT  = 2;
+var CONTEXT_BLOCK_IN  = 3;
+var CONTEXT_BLOCK_OUT = 4;
+
+
+var CHOMPING_CLIP  = 1;
+var CHOMPING_STRIP = 2;
+var CHOMPING_KEEP  = 3;
+
+
+var PATTERN_NON_PRINTABLE         = /[\x00-\x08\x0B\x0C\x0E-\x1F\x7F-\x84\x86-\x9F\uFFFE\uFFFF]|[\uD800-\uDBFF](?![\uDC00-\uDFFF])|(?:[^\uD800-\uDBFF]|^)[\uDC00-\uDFFF]/;
+var PATTERN_NON_ASCII_LINE_BREAKS = /[\x85\u2028\u2029]/;
+var PATTERN_FLOW_INDICATORS       = /[,\[\]\{\}]/;
+var PATTERN_TAG_HANDLE            = /^(?:!|!!|![a-z\-]+!)$/i;
+var PATTERN_TAG_URI               = /^(?:!|[^,\[\]\{\}])(?:%[0-9a-f]{2}|[0-9a-z\-#;\/\?:@&=\+\$,_\.!~\*'\(\)\[\]])*$/i;
+
+
+function is_EOL(c) {
+  return (c === 0x0A/* LF */) || (c === 0x0D/* CR */);
+}
+
+function is_WHITE_SPACE(c) {
+  return (c === 0x09/* Tab */) || (c === 0x20/* Space */);
+}
+
+function is_WS_OR_EOL(c) {
+  return (c === 0x09/* Tab */) ||
+         (c === 0x20/* Space */) ||
+         (c === 0x0A/* LF */) ||
+         (c === 0x0D/* CR */);
+}
+
+function is_FLOW_INDICATOR(c) {
+  return c === 0x2C/* , */ ||
+         c === 0x5B/* [ */ ||
+         c === 0x5D/* ] */ ||
+         c === 0x7B/* { */ ||
+         c === 0x7D/* } */;
+}
+
+function fromHexCode(c) {
+  var lc;
+
+  if ((0x30/* 0 */ <= c) && (c <= 0x39/* 9 */)) {
+    return c - 0x30;
+  }
+
+  /*eslint-disable no-bitwise*/
+  lc = c | 0x20;
+
+  if ((0x61/* a */ <= lc) && (lc <= 0x66/* f */)) {
+    return lc - 0x61 + 10;
+  }
+
+  return -1;
+}
+
+function escapedHexLen(c) {
+  if (c === 0x78/* x */) { return 2; }
+  if (c === 0x75/* u */) { return 4; }
+  if (c === 0x55/* U */) { return 8; }
+  return 0;
+}
+
+function fromDecimalCode(c) {
+  if ((0x30/* 0 */ <= c) && (c <= 0x39/* 9 */)) {
+    return c - 0x30;
+  }
+
+  return -1;
+}
+
+function simpleEscapeSequence(c) {
+  return (c === 0x30/* 0 */) ? '\x00' :
+        (c === 0x61/* a */) ? '\x07' :
+        (c === 0x62/* b */) ? '\x08' :
+        (c === 0x74/* t */) ? '\x09' :
+        (c === 0x09/* Tab */) ? '\x09' :
+        (c === 0x6E/* n */) ? '\x0A' :
+        (c === 0x76/* v */) ? '\x0B' :
+        (c === 0x66/* f */) ? '\x0C' :
+        (c === 0x72/* r */) ? '\x0D' :
+        (c === 0x65/* e */) ? '\x1B' :
+        (c === 0x20/* Space */) ? ' ' :
+        (c === 0x22/* " */) ? '\x22' :
+        (c === 0x2F/* / */) ? '/' :
+        (c === 0x5C/* \ */) ? '\x5C' :
+        (c === 0x4E/* N */) ? '\x85' :
+        (c === 0x5F/* _ */) ? '\xA0' :
+        (c === 0x4C/* L */) ? '\u2028' :
+        (c === 0x50/* P */) ? '\u2029' : '';
+}
+
+function charFromCodepoint(c) {
+  if (c <= 0xFFFF) {
+    return String.fromCharCode(c);
+  }
+  // Encode UTF-16 surrogate pair
+  // https://en.wikipedia.org/wiki/UTF-16#Code_points_U.2B010000_to_U.2B10FFFF
+  return String.fromCharCode(((c - 0x010000) >> 10) + 0xD800,
+                             ((c - 0x010000) & 0x03FF) + 0xDC00);
+}
+
+var simpleEscapeCheck = new Array(256); // integer, for fast access
+var simpleEscapeMap = new Array(256);
+for (var i = 0; i < 256; i++) {
+  simpleEscapeCheck[i] = simpleEscapeSequence(i) ? 1 : 0;
+  simpleEscapeMap[i] = simpleEscapeSequence(i);
+}
+
+
+function State(input, options) {
+  this.input = input;
+
+  this.filename  = options['filename']  || null;
+  this.schema    = options['schema']    || DEFAULT_FULL_SCHEMA;
+  this.onWarning = options['onWarning'] || null;
+  this.legacy    = options['legacy']    || false;
+  this.json      = options['json']      || false;
+  this.listener  = options['listener']  || null;
+
+  this.implicitTypes = this.schema.compiledImplicit;
+  this.typeMap       = this.schema.compiledTypeMap;
+
+  this.length     = input.length;
+  this.position   = 0;
+  this.line       = 0;
+  this.lineStart  = 0;
+  this.lineIndent = 0;
+
+  this.documents = [];
+
+  /*
+  this.version;
+  this.checkLineBreaks;
+  this.tagMap;
+  this.anchorMap;
+  this.tag;
+  this.anchor;
+  this.kind;
+  this.result;*/
+
+}
+
+
+function generateError(state, message) {
+  return new YAMLException(
+    message,
+    new Mark(state.filename, state.input, state.position, state.line, (state.position - state.lineStart)));
+}
+
+function throwError(state, message) {
+  throw generateError(state, message);
+}
+
+function throwWarning(state, message) {
+  if (state.onWarning) {
+    state.onWarning.call(null, generateError(state, message));
+  }
+}
+
+
+var directiveHandlers = {
+
+  YAML: function handleYamlDirective(state, name, args) {
+
+    var match, major, minor;
+
+    if (state.version !== null) {
+      throwError(state, 'duplication of %YAML directive');
+    }
+
+    if (args.length !== 1) {
+      throwError(state, 'YAML directive accepts exactly one argument');
+    }
+
+    match = /^([0-9]+)\.([0-9]+)$/.exec(args[0]);
+
+    if (match === null) {
+      throwError(state, 'ill-formed argument of the YAML directive');
+    }
+
+    major = parseInt(match[1], 10);
+    minor = parseInt(match[2], 10);
+
+    if (major !== 1) {
+      throwError(state, 'unacceptable YAML version of the document');
+    }
+
+    state.version = args[0];
+    state.checkLineBreaks = (minor < 2);
+
+    if (minor !== 1 && minor !== 2) {
+      throwWarning(state, 'unsupported YAML version of the document');
+    }
+  },
+
+  TAG: function handleTagDirective(state, name, args) {
+
+    var handle, prefix;
+
+    if (args.length !== 2) {
+      throwError(state, 'TAG directive accepts exactly two arguments');
+    }
+
+    handle = args[0];
+    prefix = args[1];
+
+    if (!PATTERN_TAG_HANDLE.test(handle)) {
+      throwError(state, 'ill-formed tag handle (first argument) of the TAG directive');
+    }
+
+    if (_hasOwnProperty.call(state.tagMap, handle)) {
+      throwError(state, 'there is a previously declared suffix for "' + handle + '" tag handle');
+    }
+
+    if (!PATTERN_TAG_URI.test(prefix)) {
+      throwError(state, 'ill-formed tag prefix (second argument) of the TAG directive');
+    }
+
+    state.tagMap[handle] = prefix;
+  }
+};
+
+
+function captureSegment(state, start, end, checkJson) {
+  var _position, _length, _character, _result;
+
+  if (start < end) {
+    _result = state.input.slice(start, end);
+
+    if (checkJson) {
+      for (_position = 0, _length = _result.length;
+           _position < _length;
+           _position += 1) {
+        _character = _result.charCodeAt(_position);
+        if (!(_character === 0x09 ||
+              (0x20 <= _character && _character <= 0x10FFFF))) {
+          throwError(state, 'expected valid JSON character');
+        }
+      }
+    } else if (PATTERN_NON_PRINTABLE.test(_result)) {
+      throwError(state, 'the stream contains non-printable characters');
+    }
+
+    state.result += _result;
+  }
+}
+
+function mergeMappings(state, destination, source, overridableKeys) {
+  var sourceKeys, key, index, quantity;
+
+  if (!common.isObject(source)) {
+    throwError(state, 'cannot merge mappings; the provided source object is unacceptable');
+  }
+
+  sourceKeys = Object.keys(source);
+
+  for (index = 0, quantity = sourceKeys.length; index < quantity; index += 1) {
+    key = sourceKeys[index];
+
+    if (!_hasOwnProperty.call(destination, key)) {
+      destination[key] = source[key];
+      overridableKeys[key] = true;
+    }
+  }
+}
+
+function storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, valueNode) {
+  var index, quantity;
+
+  keyNode = String(keyNode);
+
+  if (_result === null) {
+    _result = {};
+  }
+
+  if (keyTag === 'tag:yaml.org,2002:merge') {
+    if (Array.isArray(valueNode)) {
+      for (index = 0, quantity = valueNode.length; index < quantity; index += 1) {
+        mergeMappings(state, _result, valueNode[index], overridableKeys);
+      }
+    } else {
+      mergeMappings(state, _result, valueNode, overridableKeys);
+    }
+  } else {
+    if (!state.json &&
+        !_hasOwnProperty.call(overridableKeys, keyNode) &&
+        _hasOwnProperty.call(_result, keyNode)) {
+      throwError(state, 'duplicated mapping key');
+    }
+    _result[keyNode] = valueNode;
+    delete overridableKeys[keyNode];
+  }
+
+  return _result;
+}
+
+function readLineBreak(state) {
+  var ch;
+
+  ch = state.input.charCodeAt(state.position);
+
+  if (ch === 0x0A/* LF */) {
+    state.position++;
+  } else if (ch === 0x0D/* CR */) {
+    state.position++;
+    if (state.input.charCodeAt(state.position) === 0x0A/* LF */) {
+      state.position++;
+    }
+  } else {
+    throwError(state, 'a line break is expected');
+  }
+
+  state.line += 1;
+  state.lineStart = state.position;
+}
+
+function skipSeparationSpace(state, allowComments, checkIndent) {
+  var lineBreaks = 0,
+      ch = state.input.charCodeAt(state.position);
+
+  while (ch !== 0) {
+    while (is_WHITE_SPACE(ch)) {
+      ch = state.input.charCodeAt(++state.position);
+    }
+
+    if (allowComments && ch === 0x23/* # */) {
+      do {
+        ch = state.input.charCodeAt(++state.position);
+      } while (ch !== 0x0A/* LF */ && ch !== 0x0D/* CR */ && ch !== 0);
+    }
+
+    if (is_EOL(ch)) {
+      readLineBreak(state);
+
+      ch = state.input.charCodeAt(state.position);
+      lineBreaks++;
+      state.lineIndent = 0;
+
+      while (ch === 0x20/* Space */) {
+        state.lineIndent++;
+        ch = state.input.charCodeAt(++state.position);
+      }
+    } else {
+      break;
+    }
+  }
+
+  if (checkIndent !== -1 && lineBreaks !== 0 && state.lineIndent < checkIndent) {
+    throwWarning(state, 'deficient indentation');
+  }
+
+  return lineBreaks;
+}
+
+function testDocumentSeparator(state) {
+  var _position = state.position,
+      ch;
+
+  ch = state.input.charCodeAt(_position);
+
+  // Condition state.position === state.lineStart is tested
+  // in parent on each call, for efficiency. No needs to test here again.
+  if ((ch === 0x2D/* - */ || ch === 0x2E/* . */) &&
+      ch === state.input.charCodeAt(_position + 1) &&
+      ch === state.input.charCodeAt(_position + 2)) {
+
+    _position += 3;
+
+    ch = state.input.charCodeAt(_position);
+
+    if (ch === 0 || is_WS_OR_EOL(ch)) {
+      return true;
+    }
+  }
+
+  return false;
+}
+
+function writeFoldedLines(state, count) {
+  if (count === 1) {
+    state.result += ' ';
+  } else if (count > 1) {
+    state.result += common.repeat('\n', count - 1);
+  }
+}
+
+
+function readPlainScalar(state, nodeIndent, withinFlowCollection) {
+  var preceding,
+      following,
+      captureStart,
+      captureEnd,
+      hasPendingContent,
+      _line,
+      _lineStart,
+      _lineIndent,
+      _kind = state.kind,
+      _result = state.result,
+      ch;
+
+  ch = state.input.charCodeAt(state.position);
+
+  if (is_WS_OR_EOL(ch)      ||
+      is_FLOW_INDICATOR(ch) ||
+      ch === 0x23/* # */    ||
+      ch === 0x26/* & */    ||
+      ch === 0x2A/* * */    ||
+      ch === 0x21/* ! */    ||
+      ch === 0x7C/* | */    ||
+      ch === 0x3E/* > */    ||
+      ch === 0x27/* ' */    ||
+      ch === 0x22/* " */    ||
+      ch === 0x25/* % */    ||
+      ch === 0x40/* @ */    ||
+      ch === 0x60/* ` */) {
+    return false;
+  }
+
+  if (ch === 0x3F/* ? */ || ch === 0x2D/* - */) {
+    following = state.input.charCodeAt(state.position + 1);
+
+    if (is_WS_OR_EOL(following) ||
+        withinFlowCollection && is_FLOW_INDICATOR(following)) {
+      return false;
+    }
+  }
+
+  state.kind = 'scalar';
+  state.result = '';
+  captureStart = captureEnd = state.position;
+  hasPendingContent = false;
+
+  while (ch !== 0) {
+    if (ch === 0x3A/* : */) {
+      following = state.input.charCodeAt(state.position + 1);
+
+      if (is_WS_OR_EOL(following) ||
+          withinFlowCollection && is_FLOW_INDICATOR(following)) {
+        break;
+      }
+
+    } else if (ch === 0x23/* # */) {
+      preceding = state.input.charCodeAt(state.position - 1);
+
+      if (is_WS_OR_EOL(preceding)) {
+        break;
+      }
+
+    } else if ((state.position === state.lineStart && testDocumentSeparator(state)) ||
+               withinFlowCollection && is_FLOW_INDICATOR(ch)) {
+      break;
+
+    } else if (is_EOL(ch)) {
+      _line = state.line;
+      _lineStart = state.lineStart;
+      _lineIndent = state.lineIndent;
+      skipSeparationSpace(state, false, -1);
+
+      if (state.lineIndent >= nodeIndent) {
+        hasPendingContent = true;
+        ch = state.input.charCodeAt(state.position);
+        continue;
+      } else {
+        state.position = captureEnd;
+        state.line = _line;
+        state.lineStart = _lineStart;
+        state.lineIndent = _lineIndent;
+        break;
+      }
+    }
+
+    if (hasPendingContent) {
+      captureSegment(state, captureStart, captureEnd, false);
+      writeFoldedLines(state, state.line - _line);
+      captureStart = captureEnd = state.position;
+      hasPendingContent = false;
+    }
+
+    if (!is_WHITE_SPACE(ch)) {
+      captureEnd = state.position + 1;
+    }
+
+    ch = state.input.charCodeAt(++state.position);
+  }
+
+  captureSegment(state, captureStart, captureEnd, false);
+
+  if (state.result) {
+    return true;
+  }
+
+  state.kind = _kind;
+  state.result = _result;
+  return false;
+}
+
+function readSingleQuotedScalar(state, nodeIndent) {
+  var ch,
+      captureStart, captureEnd;
+
+  ch = state.input.charCodeAt(state.position);
+
+  if (ch !== 0x27/* ' */) {
+    return false;
+  }
+
+  state.kind = 'scalar';
+  state.result = '';
+  state.position++;
+  captureStart = captureEnd = state.position;
+
+  while ((ch = state.input.charCodeAt(state.position)) !== 0) {
+    if (ch === 0x27/* ' */) {
+      captureSegment(state, captureStart, state.position, true);
+      ch = state.input.charCodeAt(++state.position);
+
+      if (ch === 0x27/* ' */) {
+        captureStart = captureEnd = state.position;
+        state.position++;
+      } else {
+        return true;
+      }
+
+    } else if (is_EOL(ch)) {
+      captureSegment(state, captureStart, captureEnd, true);
+      writeFoldedLines(state, skipSeparationSpace(state, false, nodeIndent));
+      captureStart = captureEnd = state.position;
+
+    } else if (state.position === state.lineStart && testDocumentSeparator(state)) {
+      throwError(state, 'unexpected end of the document within a single quoted scalar');
+
+    } else {
+      state.position++;
+      captureEnd = state.position;
+    }
+  }
+
+  throwError(state, 'unexpected end of the stream within a single quoted scalar');
+}
+
+function readDoubleQuotedScalar(state, nodeIndent) {
+  var captureStart,
+      captureEnd,
+      hexLength,
+      hexResult,
+      tmp,
+      ch;
+
+  ch = state.input.charCodeAt(state.position);
+
+  if (ch !== 0x22/* " */) {
+    return false;
+  }
+
+  state.kind = 'scalar';
+  state.result = '';
+  state.position++;
+  captureStart = captureEnd = state.position;
+
+  while ((ch = state.input.charCodeAt(state.position)) !== 0) {
+    if (ch === 0x22/* " */) {
+      captureSegment(state, captureStart, state.position, true);
+      state.position++;
+      return true;
+
+    } else if (ch === 0x5C/* \ */) {
+      captureSegment(state, captureStart, state.position, true);
+      ch = state.input.charCodeAt(++state.position);
+
+      if (is_EOL(ch)) {
+        skipSeparationSpace(state, false, nodeIndent);
+
+        // TODO: rework to inline fn with no type cast?
+      } else if (ch < 256 && simpleEscapeCheck[ch]) {
+        state.result += simpleEscapeMap[ch];
+        state.position++;
+
+      } else if ((tmp = escapedHexLen(ch)) > 0) {
+        hexLength = tmp;
+        hexResult = 0;
+
+        for (; hexLength > 0; hexLength--) {
+          ch = state.input.charCodeAt(++state.position);
+
+          if ((tmp = fromHexCode(ch)) >= 0) {
+            hexResult = (hexResult << 4) + tmp;
+
+          } else {
+            throwError(state, 'expected hexadecimal character');
+          }
+        }
+
+        state.result += charFromCodepoint(hexResult);
+
+        state.position++;
+
+      } else {
+        throwError(state, 'unknown escape sequence');
+      }
+
+      captureStart = captureEnd = state.position;
+
+    } else if (is_EOL(ch)) {
+      captureSegment(state, captureStart, captureEnd, true);
+      writeFoldedLines(state, skipSeparationSpace(state, false, nodeIndent));
+      captureStart = captureEnd = state.position;
+
+    } else if (state.position === state.lineStart && testDocumentSeparator(state)) {
+      throwError(state, 'unexpected end of the document within a double quoted scalar');
+
+    } else {
+      state.position++;
+      captureEnd = state.position;
+    }
+  }
+
+  throwError(state, 'unexpected end of the stream within a double quoted scalar');
+}
+
+function readFlowCollection(state, nodeIndent) {
+  var readNext = true,
+      _line,
+      _tag     = state.tag,
+      _result,
+      _anchor  = state.anchor,
+      following,
+      terminator,
+      isPair,
+      isExplicitPair,
+      isMapping,
+      overridableKeys = {},
+      keyNode,
+      keyTag,
+      valueNode,
+      ch;
+
+  ch = state.input.charCodeAt(state.position);
+
+  if (ch === 0x5B/* [ */) {
+    terminator = 0x5D;/* ] */
+    isMapping = false;
+    _result = [];
+  } else if (ch === 0x7B/* { */) {
+    terminator = 0x7D;/* } */
+    isMapping = true;
+    _result = {};
+  } else {
+    return false;
+  }
+
+  if (state.anchor !== null) {
+    state.anchorMap[state.anchor] = _result;
+  }
+
+  ch = state.input.charCodeAt(++state.position);
+
+  while (ch !== 0) {
+    skipSeparationSpace(state, true, nodeIndent);
+
+    ch = state.input.charCodeAt(state.position);
+
+    if (ch === terminator) {
+      state.position++;
+      state.tag = _tag;
+      state.anchor = _anchor;
+      state.kind = isMapping ? 'mapping' : 'sequence';
+      state.result = _result;
+      return true;
+    } else if (!readNext) {
+      throwError(state, 'missed comma between flow collection entries');
+    }
+
+    keyTag = keyNode = valueNode = null;
+    isPair = isExplicitPair = false;
+
+    if (ch === 0x3F/* ? */) {
+      following = state.input.charCodeAt(state.position + 1);
+
+      if (is_WS_OR_EOL(following)) {
+        isPair = isExplicitPair = true;
+        state.position++;
+        skipSeparationSpace(state, true, nodeIndent);
+      }
+    }
+
+    _line = state.line;
+    composeNode(state, nodeIndent, CONTEXT_FLOW_IN, false, true);
+    keyTag = state.tag;
+    keyNode = state.result;
+    skipSeparationSpace(state, true, nodeIndent);
+
+    ch = state.input.charCodeAt(state.position);
+
+    if ((isExplicitPair || state.line === _line) && ch === 0x3A/* : */) {
+      isPair = true;
+      ch = state.input.charCodeAt(++state.position);
+      skipSeparationSpace(state, true, nodeIndent);
+      composeNode(state, nodeIndent, CONTEXT_FLOW_IN, false, true);
+      valueNode = state.result;
+    }
+
+    if (isMapping) {
+      storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, valueNode);
+    } else if (isPair) {
+      _result.push(storeMappingPair(state, null, overridableKeys, keyTag, keyNode, valueNode));
+    } else {
+      _result.push(keyNode);
+    }
+
+    skipSeparationSpace(state, true, nodeIndent);
+
+    ch = state.input.charCodeAt(state.position);
+
+    if (ch === 0x2C/* , */) {
+      readNext = true;
+      ch = state.input.charCodeAt(++state.position);
+    } else {
+      readNext = false;
+    }
+  }
+
+  throwError(state, 'unexpected end of the stream within a flow collection');
+}
+
+function readBlockScalar(state, nodeIndent) {
+  var captureStart,
+      folding,
+      chomping       = CHOMPING_CLIP,
+      didReadContent = false,
+      detectedIndent = false,
+      textIndent     = nodeIndent,
+      emptyLines     = 0,
+      atMoreIndented = false,
+      tmp,
+      ch;
+
+  ch = state.input.charCodeAt(state.position);
+
+  if (ch === 0x7C/* | */) {
+    folding = false;
+  } else if (ch === 0x3E/* > */) {
+    folding = true;
+  } else {
+    return false;
+  }
+
+  state.kind = 'scalar';
+  state.result = '';
+
+  while (ch !== 0) {
+    ch = state.input.charCodeAt(++state.position);
+
+    if (ch === 0x2B/* + */ || ch === 0x2D/* - */) {
+      if (CHOMPING_CLIP === chomping) {
+        chomping = (ch === 0x2B/* + */) ? CHOMPING_KEEP : CHOMPING_STRIP;
+      } else {
+        throwError(state, 'repeat of a chomping mode identifier');
+      }
+
+    } else if ((tmp = fromDecimalCode(ch)) >= 0) {
+      if (tmp === 0) {
+        throwError(state, 'bad explicit indentation width of a block scalar; it cannot be less than one');
+      } else if (!detectedIndent) {
+        textIndent = nodeIndent + tmp - 1;
+        detectedIndent = true;
+      } else {
+        throwError(state, 'repeat of an indentation width identifier');
+      }
+
+    } else {
+      break;
+    }
+  }
+
+  if (is_WHITE_SPACE(ch)) {
+    do { ch = state.input.charCodeAt(++state.position); }
+    while (is_WHITE_SPACE(ch));
+
+    if (ch === 0x23/* # */) {
+      do { ch = state.input.charCodeAt(++state.position); }
+      while (!is_EOL(ch) && (ch !== 0));
+    }
+  }
+
+  while (ch !== 0) {
+    readLineBreak(state);
+    state.lineIndent = 0;
+
+    ch = state.input.charCodeAt(state.position);
+
+    while ((!detectedIndent || state.lineIndent < textIndent) &&
+           (ch === 0x20/* Space */)) {
+      state.lineIndent++;
+      ch = state.input.charCodeAt(++state.position);
+    }
+
+    if (!detectedIndent && state.lineIndent > textIndent) {
+      textIndent = state.lineIndent;
+    }
+
+    if (is_EOL(ch)) {
+      emptyLines++;
+      continue;
+    }
+
+    // End of the scalar.
+    if (state.lineIndent < textIndent) {
+
+      // Perform the chomping.
+      if (chomping === CHOMPING_KEEP) {
+        state.result += common.repeat('\n', didReadContent ? 1 + emptyLines : emptyLines);
+      } else if (chomping === CHOMPING_CLIP) {
+        if (didReadContent) { // i.e. only if the scalar is not empty.
+          state.result += '\n';
+        }
+      }
+
+      // Break this `while` cycle and go to the funciton's epilogue.
+      break;
+    }
+
+    // Folded style: use fancy rules to handle line breaks.
+    if (folding) {
+
+      // Lines starting with white space characters (more-indented lines) are not folded.
+      if (is_WHITE_SPACE(ch)) {
+        atMoreIndented = true;
+        // except for the first content line (cf. Example 8.1)
+        state.result += common.repeat('\n', didReadContent ? 1 + emptyLines : emptyLines);
+
+      // End of more-indented block.
+      } else if (atMoreIndented) {
+        atMoreIndented = false;
+        state.result += common.repeat('\n', emptyLines + 1);
+
+      // Just one line break - perceive as the same line.
+      } else if (emptyLines === 0) {
+        if (didReadContent) { // i.e. only if we have already read some scalar content.
+          state.result += ' ';
+        }
+
+      // Several line breaks - perceive as different lines.
+      } else {
+        state.result += common.repeat('\n', emptyLines);
+      }
+
+    // Literal style: just add exact number of line breaks between content lines.
+    } else {
+      // Keep all line breaks except the header line break.
+      state.result += common.repeat('\n', didReadContent ? 1 + emptyLines : emptyLines);
+    }
+
+    didReadContent = true;
+    detectedIndent = true;
+    emptyLines = 0;
+    captureStart = state.position;
+
+    while (!is_EOL(ch) && (ch !== 0)) {
+      ch = state.input.charCodeAt(++state.position);
+    }
+
+    captureSegment(state, captureStart, state.position, false);
+  }
+
+  return true;
+}
+
+function readBlockSequence(state, nodeIndent) {
+  var _line,
+      _tag      = state.tag,
+      _anchor   = state.anchor,
+      _result   = [],
+      following,
+      detected  = false,
+      ch;
+
+  if (state.anchor !== null) {
+    state.anchorMap[state.anchor] = _result;
+  }
+
+  ch = state.input.charCodeAt(state.position);
+
+  while (ch !== 0) {
+
+    if (ch !== 0x2D/* - */) {
+      break;
+    }
+
+    following = state.input.charCodeAt(state.position + 1);
+
+    if (!is_WS_OR_EOL(following)) {
+      break;
+    }
+
+    detected = true;
+    state.position++;
+
+    if (skipSeparationSpace(state, true, -1)) {
+      if (state.lineIndent <= nodeIndent) {
+        _result.push(null);
+        ch = state.input.charCodeAt(state.position);
+        continue;
+      }
+    }
+
+    _line = state.line;
+    composeNode(state, nodeIndent, CONTEXT_BLOCK_IN, false, true);
+    _result.push(state.result);
+    skipSeparationSpace(state, true, -1);
+
+    ch = state.input.charCodeAt(state.position);
+
+    if ((state.line === _line || state.lineIndent > nodeIndent) && (ch !== 0)) {
+      throwError(state, 'bad indentation of a sequence entry');
+    } else if (state.lineIndent < nodeIndent) {
+      break;
+    }
+  }
+
+  if (detected) {
+    state.tag = _tag;
+    state.anchor = _anchor;
+    state.kind = 'sequence';
+    state.result = _result;
+    return true;
+  }
+  return false;
+}
+
+function readBlockMapping(state, nodeIndent, flowIndent) {
+  var following,
+      allowCompact,
+      _line,
+      _tag          = state.tag,
+      _anchor       = state.anchor,
+      _result       = {},
+      overridableKeys = {},
+      keyTag        = null,
+      keyNode       = null,
+      valueNode     = null,
+      atExplicitKey = false,
+      detected      = false,
+      ch;
+
+  if (state.anchor !== null) {
+    state.anchorMap[state.anchor] = _result;
+  }
+
+  ch = state.input.charCodeAt(state.position);
+
+  while (ch !== 0) {
+    following = state.input.charCodeAt(state.position + 1);
+    _line = state.line; // Save the current line.
+
+    //
+    // Explicit notation case. There are two separate blocks:
+    // first for the key (denoted by "?") and second for the value (denoted by ":")
+    //
+    if ((ch === 0x3F/* ? */ || ch === 0x3A/* : */) && is_WS_OR_EOL(following)) {
+
+      if (ch === 0x3F/* ? */) {
+        if (atExplicitKey) {
+          storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, null);
+          keyTag = keyNode = valueNode = null;
+        }
+
+        detected = true;
+        atExplicitKey = true;
+        allowCompact = true;
+
+      } else if (atExplicitKey) {
+        // i.e. 0x3A/* : */ === character after the explicit key.
+        atExplicitKey = false;
+        allowCompact = true;
+
+      } else {
+        throwError(state, 'incomplete explicit mapping pair; a key node is missed');
+      }
+
+      state.position += 1;
+      ch = following;
+
+    //
+    // Implicit notation case. Flow-style node as the key first, then ":", and the value.
+    //
+    } else if (composeNode(state, flowIndent, CONTEXT_FLOW_OUT, false, true)) {
+
+      if (state.line === _line) {
+        ch = state.input.charCodeAt(state.position);
+
+        while (is_WHITE_SPACE(ch)) {
+          ch = state.input.charCodeAt(++state.position);
+        }
+
+        if (ch === 0x3A/* : */) {
+          ch = state.input.charCodeAt(++state.position);
+
+          if (!is_WS_OR_EOL(ch)) {
+            throwError(state, 'a whitespace character is expected after the key-value separator within a block mapping');
+          }
+
+          if (atExplicitKey) {
+            storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, null);
+            keyTag = keyNode = valueNode = null;
+          }
+
+          detected = true;
+          atExplicitKey = false;
+          allowCompact = false;
+          keyTag = state.tag;
+          keyNode = state.result;
+
+        } else if (detected) {
+          throwError(state, 'can not read an implicit mapping pair; a colon is missed');
+
+        } else {
+          state.tag = _tag;
+          state.anchor = _anchor;
+          return true; // Keep the result of `composeNode`.
+        }
+
+      } else if (detected) {
+        throwError(state, 'can not read a block mapping entry; a multiline key may not be an implicit key');
+
+      } else {
+        state.tag = _tag;
+        state.anchor = _anchor;
+        return true; // Keep the result of `composeNode`.
+      }
+
+    } else {
+      break; // Reading is done. Go to the epilogue.
+    }
+
+    //
+    // Common reading code for both explicit and implicit notations.
+    //
+    if (state.line === _line || state.lineIndent > nodeIndent) {
+      if (composeNode(state, nodeIndent, CONTEXT_BLOCK_OUT, true, allowCompact)) {
+        if (atExplicitKey) {
+          keyNode = state.result;
+        } else {
+          valueNode = state.result;
+        }
+      }
+
+      if (!atExplicitKey) {
+        storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, valueNode);
+        keyTag = keyNode = valueNode = null;
+      }
+
+      skipSeparationSpace(state, true, -1);
+      ch = state.input.charCodeAt(state.position);
+    }
+
+    if (state.lineIndent > nodeIndent && (ch !== 0)) {
+      throwError(state, 'bad indentation of a mapping entry');
+    } else if (state.lineIndent < nodeIndent) {
+      break;
+    }
+  }
+
+  //
+  // Epilogue.
+  //
+
+  // Special case: last mapping's node contains only the key in explicit notation.
+  if (atExplicitKey) {
+    storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, null);
+  }
+
+  // Expose the resulting mapping.
+  if (detected) {
+    state.tag = _tag;
+    state.anchor = _anchor;
+    state.kind = 'mapping';
+    state.result = _result;
+  }
+
+  return detected;
+}
+
+function readTagProperty(state) {
+  var _position,
+      isVerbatim = false,
+      isNamed    = false,
+      tagHandle,
+      tagName,
+      ch;
+
+  ch = state.input.charCodeAt(state.position);
+
+  if (ch !== 0x21/* ! */) return false;
+
+  if (state.tag !== null) {
+    throwError(state, 'duplication of a tag property');
+  }
+
+  ch = state.input.charCodeAt(++state.position);
+
+  if (ch === 0x3C/* < */) {
+    isVerbatim = true;
+    ch = state.input.charCodeAt(++state.position);
+
+  } else if (ch === 0x21/* ! */) {
+    isNamed = true;
+    tagHandle = '!!';
+    ch = state.input.charCodeAt(++state.position);
+
+  } else {
+    tagHandle = '!';
+  }
+
+  _position = state.position;
+
+  if (isVerbatim) {
+    do { ch = state.input.charCodeAt(++state.position); }
+    while (ch !== 0 && ch !== 0x3E/* > */);
+
+    if (state.position < state.length) {
+      tagName = state.input.slice(_position, state.position);
+      ch = state.input.charCodeAt(++state.position);
+    } else {
+      throwError(state, 'unexpected end of the stream within a verbatim tag');
+    }
+  } else {
+    while (ch !== 0 && !is_WS_OR_EOL(ch)) {
+
+      if (ch === 0x21/* ! */) {
+        if (!isNamed) {
+          tagHandle = state.input.slice(_position - 1, state.position + 1);
+
+          if (!PATTERN_TAG_HANDLE.test(tagHandle)) {
+            throwError(state, 'named tag handle cannot contain such characters');
+          }
+
+          isNamed = true;
+          _position = state.position + 1;
+        } else {
+          throwError(state, 'tag suffix cannot contain exclamation marks');
+        }
+      }
+
+      ch = state.input.charCodeAt(++state.position);
+    }
+
+    tagName = state.input.slice(_position, state.position);
+
+    if (PATTERN_FLOW_INDICATORS.test(tagName)) {
+      throwError(state, 'tag suffix cannot contain flow indicator characters');
+    }
+  }
+
+  if (tagName && !PATTERN_TAG_URI.test(tagName)) {
+    throwError(state, 'tag name cannot contain such characters: ' + tagName);
+  }
+
+  if (isVerbatim) {
+    state.tag = tagName;
+
+  } else if (_hasOwnProperty.call(state.tagMap, tagHandle)) {
+    state.tag = state.tagMap[tagHandle] + tagName;
+
+  } else if (tagHandle === '!') {
+    state.tag = '!' + tagName;
+
+  } else if (tagHandle === '!!') {
+    state.tag = 'tag:yaml.org,2002:' + tagName;
+
+  } else {
+    throwError(state, 'undeclared tag handle "' + tagHandle + '"');
+  }
+
+  return true;
+}
+
+function readAnchorProperty(state) {
+  var _position,
+      ch;
+
+  ch = state.input.charCodeAt(state.position);
+
+  if (ch !== 0x26/* & */) return false;
+
+  if (state.anchor !== null) {
+    throwError(state, 'duplication of an anchor property');
+  }
+
+  ch = state.input.charCodeAt(++state.position);
+  _position = state.position;
+
+  while (ch !== 0 && !is_WS_OR_EOL(ch) && !is_FLOW_INDICATOR(ch)) {
+    ch = state.input.charCodeAt(++state.position);
+  }
+
+  if (state.position === _position) {
+    throwError(state, 'name of an anchor node must contain at least one character');
+  }
+
+  state.anchor = state.input.slice(_position, state.position);
+  return true;
+}
+
+function readAlias(state) {
+  var _position, alias,
+      ch;
+
+  ch = state.input.charCodeAt(state.position);
+
+  if (ch !== 0x2A/* * */) return false;
+
+  ch = state.input.charCodeAt(++state.position);
+  _position = state.position;
+
+  while (ch !== 0 && !is_WS_OR_EOL(ch) && !is_FLOW_INDICATOR(ch)) {
+    ch = state.input.charCodeAt(++state.position);
+  }
+
+  if (state.position === _position) {
+    throwError(state, 'name of an alias node must contain at least one character');
+  }
+
+  alias = state.input.slice(_position, state.position);
+
+  if (!state.anchorMap.hasOwnProperty(alias)) {
+    throwError(state, 'unidentified alias "' + alias + '"');
+  }
+
+  state.result = state.anchorMap[alias];
+  skipSeparationSpace(state, true, -1);
+  return true;
+}
+
+function composeNode(state, parentIndent, nodeContext, allowToSeek, allowCompact) {
+  var allowBlockStyles,
+      allowBlockScalars,
+      allowBlockCollections,
+      indentStatus = 1, // 1: this>parent, 0: this=parent, -1: this<parent
+      atNewLine  = false,
+      hasContent = false,
+      typeIndex,
+      typeQuantity,
+      type,
+      flowIndent,
+      blockIndent;
+
+  if (state.listener !== null) {
+    state.listener('open', state);
+  }
+
+  state.tag    = null;
+  state.anchor = null;
+  state.kind   = null;
+  state.result = null;
+
+  allowBlockStyles = allowBlockScalars = allowBlockCollections =
+    CONTEXT_BLOCK_OUT === nodeContext ||
+    CONTEXT_BLOCK_IN  === nodeContext;
+
+  if (allowToSeek) {
+    if (skipSeparationSpace(state, true, -1)) {
+      atNewLine = true;
+
+      if (state.lineIndent > parentIndent) {
+        indentStatus = 1;
+      } else if (state.lineIndent === parentIndent) {
+        indentStatus = 0;
+      } else if (state.lineIndent < parentIndent) {
+        indentStatus = -1;
+      }
+    }
+  }
+
+  if (indentStatus === 1) {
+    while (readTagProperty(state) || readAnchorProperty(state)) {
+      if (skipSeparationSpace(state, true, -1)) {
+        atNewLine = true;
+        allowBlockCollections = allowBlockStyles;
+
+        if (state.lineIndent > parentIndent) {
+          indentStatus = 1;
+        } else if (state.lineIndent === parentIndent) {
+          indentStatus = 0;
+        } else if (state.lineIndent < parentIndent) {
+          indentStatus = -1;
+        }
+      } else {
+        allowBlockCollections = false;
+      }
+    }
+  }
+
+  if (allowBlockCollections) {
+    allowBlockCollections = atNewLine || allowCompact;
+  }
+
+  if (indentStatus === 1 || CONTEXT_BLOCK_OUT === nodeContext) {
+    if (CONTEXT_FLOW_IN === nodeContext || CONTEXT_FLOW_OUT === nodeContext) {
+      flowIndent = parentIndent;
+    } else {
+      flowIndent = parentIndent + 1;
+    }
+
+    blockIndent = state.position - state.lineStart;
+
+    if (indentStatus === 1) {
+      if (allowBlockCollections &&
+          (readBlockSequence(state, blockIndent) ||
+           readBlockMapping(state, blockIndent, flowIndent)) ||
+          readFlowCollection(state, flowIndent)) {
+        hasContent = true;
+      } else {
+        if ((allowBlockScalars && readBlockScalar(state, flowIndent)) ||
+            readSingleQuotedScalar(state, flowIndent) ||
+            readDoubleQuotedScalar(state, flowIndent)) {
+          hasContent = true;
+
+        } else if (readAlias(state)) {
+          hasContent = true;
+
+          if (state.tag !== null || state.anchor !== null) {
+            throwError(state, 'alias node should not have any properties');
+          }
+
+        } else if (readPlainScalar(state, flowIndent, CONTEXT_FLOW_IN === nodeContext)) {
+          hasContent = true;
+
+          if (state.tag === null) {
+            state.tag = '?';
+          }
+        }
+
+        if (state.anchor !== null) {
+          state.anchorMap[state.anchor] = state.result;
+        }
+      }
+    } else if (indentStatus === 0) {
+      // Special case: block sequences are allowed to have same indentation level as the parent.
+      // http://www.yaml.org/spec/1.2/spec.html#id2799784
+      hasContent = allowBlockCollections && readBlockSequence(state, blockIndent);
+    }
+  }
+
+  if (state.tag !== null && state.tag !== '!') {
+    if (state.tag === '?') {
+      for (typeIndex = 0, typeQuantity = state.implicitTypes.length;
+           typeIndex < typeQuantity;
+           typeIndex += 1) {
+        type = state.implicitTypes[typeIndex];
+
+        // Implicit resolving is not allowed for non-scalar types, and '?'
+        // non-specific tag is only assigned to plain scalars. So, it isn't
+        // needed to check for 'kind' conformity.
+
+        if (type.resolve(state.result)) { // `state.result` updated in resolver if matched
+          state.result = type.construct(state.result);
+          state.tag = type.tag;
+          if (state.anchor !== null) {
+            state.anchorMap[state.anchor] = state.result;
+          }
+          break;
+        }
+      }
+    } else if (_hasOwnProperty.call(state.typeMap, state.tag)) {
+      type = state.typeMap[state.tag];
+
+      if (state.result !== null && type.kind !== state.kind) {
+        throwError(state, 'unacceptable node kind for !<' + state.tag + '> tag; it should be "' + type.kind + '", not "' + state.kind + '"');
+      }
+
+      if (!type.resolve(state.result)) { // `state.result` updated in resolver if matched
+        throwError(state, 'cannot resolve a node with !<' + state.tag + '> explicit tag');
+      } else {
+        state.result = type.construct(state.result);
+        if (state.anchor !== null) {
+          state.anchorMap[state.anchor] = state.result;
+        }
+      }
+    } else {
+      throwError(state, 'unknown tag !<' + state.tag + '>');
+    }
+  }
+
+  if (state.listener !== null) {
+    state.listener('close', state);
+  }
+  return state.tag !== null ||  state.anchor !== null || hasContent;
+}
+
+function readDocument(state) {
+  var documentStart = state.position,
+      _position,
+      directiveName,
+      directiveArgs,
+      hasDirectives = false,
+      ch;
+
+  state.version = null;
+  state.checkLineBreaks = state.legacy;
+  state.tagMap = {};
+  state.anchorMap = {};
+
+  while ((ch = state.input.charCodeAt(state.position)) !== 0) {
+    skipSeparationSpace(state, true, -1);
+
+    ch = state.input.charCodeAt(state.position);
+
+    if (state.lineIndent > 0 || ch !== 0x25/* % */) {
+      break;
+    }
+
+    hasDirectives = true;
+    ch = state.input.charCodeAt(++state.position);
+    _position = state.position;
+
+    while (ch !== 0 && !is_WS_OR_EOL(ch)) {
+      ch = state.input.charCodeAt(++state.position);
+    }
+
+    directiveName = state.input.slice(_position, state.position);
+    directiveArgs = [];
+
+    if (directiveName.length < 1) {
+      throwError(state, 'directive name must not be less than one character in length');
+    }
+
+    while (ch !== 0) {
+      while (is_WHITE_SPACE(ch)) {
+        ch = state.input.charCodeAt(++state.position);
+      }
+
+      if (ch === 0x23/* # */) {
+        do { ch = state.input.charCodeAt(++state.position); }
+        while (ch !== 0 && !is_EOL(ch));
+        break;
+      }
+
+      if (is_EOL(ch)) break;
+
+      _position = state.position;
+
+      while (ch !== 0 && !is_WS_OR_EOL(ch)) {
+        ch = state.input.charCodeAt(++state.position);
+      }
+
+      directiveArgs.push(state.input.slice(_position, state.position));
+    }
+
+    if (ch !== 0) readLineBreak(state);
+
+    if (_hasOwnProperty.call(directiveHandlers, directiveName)) {
+      directiveHandlers[directiveName](state, directiveName, directiveArgs);
+    } else {
+      throwWarning(state, 'unknown document directive "' + directiveName + '"');
+    }
+  }
+
+  skipSeparationSpace(state, true, -1);
+
+  if (state.lineIndent === 0 &&
+      state.input.charCodeAt(state.position)     === 0x2D/* - */ &&
+      state.input.charCodeAt(state.position + 1) === 0x2D/* - */ &&
+      state.input.charCodeAt(state.position + 2) === 0x2D/* - */) {
+    state.position += 3;
+    skipSeparationSpace(state, true, -1);
+
+  } else if (hasDirectives) {
+    throwError(state, 'directives end mark is expected');
+  }
+
+  composeNode(state, state.lineIndent - 1, CONTEXT_BLOCK_OUT, false, true);
+  skipSeparationSpace(state, true, -1);
+
+  if (state.checkLineBreaks &&
+      PATTERN_NON_ASCII_LINE_BREAKS.test(state.input.slice(documentStart, state.position))) {
+    throwWarning(state, 'non-ASCII line breaks are interpreted as content');
+  }
+
+  state.documents.push(state.result);
+
+  if (state.position === state.lineStart && testDocumentSeparator(state)) {
+
+    if (state.input.charCodeAt(state.position) === 0x2E/* . */) {
+      state.position += 3;
+      skipSeparationSpace(state, true, -1);
+    }
+    return;
+  }
+
+  if (state.position < (state.length - 1)) {
+    throwError(state, 'end of the stream or a document separator is expected');
+  } else {
+    return;
+  }
+}
+
+
+function loadDocuments(input, options) {
+  input = String(input);
+  options = options || {};
+
+  if (input.length !== 0) {
+
+    // Add tailing `\n` if not exists
+    if (input.charCodeAt(input.length - 1) !== 0x0A/* LF */ &&
+        input.charCodeAt(input.length - 1) !== 0x0D/* CR */) {
+      input += '\n';
+    }
+
+    // Strip BOM
+    if (input.charCodeAt(0) === 0xFEFF) {
+      input = input.slice(1);
+    }
+  }
+
+  var state = new State(input, options);
+
+  // Use 0 as string terminator. That significantly simplifies bounds check.
+  state.input += '\0';
+
+  while (state.input.charCodeAt(state.position) === 0x20/* Space */) {
+    state.lineIndent += 1;
+    state.position += 1;
+  }
+
+  while (state.position < (state.length - 1)) {
+    readDocument(state);
+  }
+
+  return state.documents;
+}
+
+
+function loadAll(input, iterator, options) {
+  var documents = loadDocuments(input, options), index, length;
+
+  for (index = 0, length = documents.length; index < length; index += 1) {
+    iterator(documents[index]);
+  }
+}
+
+
+function load(input, options) {
+  var documents = loadDocuments(input, options);
+
+  if (documents.length === 0) {
+    /*eslint-disable no-undefined*/
+    return undefined;
+  } else if (documents.length === 1) {
+    return documents[0];
+  }
+  throw new YAMLException('expected a single document in the stream, but found more');
+}
+
+
+function safeLoadAll(input, output, options) {
+  loadAll(input, output, common.extend({ schema: DEFAULT_SAFE_SCHEMA }, options));
+}
+
+
+function safeLoad(input, options) {
+  return load(input, common.extend({ schema: DEFAULT_SAFE_SCHEMA }, options));
+}
+
+
+module.exports.loadAll     = loadAll;
+module.exports.load        = load;
+module.exports.safeLoadAll = safeLoadAll;
+module.exports.safeLoad    = safeLoad;
+
+},{"./common":2,"./exception":4,"./mark":6,"./schema/default_full":9,"./schema/default_safe":10}],6:[function(require,module,exports){
+'use strict';
+
+
+var common = require('./common');
+
+
+function Mark(name, buffer, position, line, column) {
+  this.name     = name;
+  this.buffer   = buffer;
+  this.position = position;
+  this.line     = line;
+  this.column   = column;
+}
+
+
+Mark.prototype.getSnippet = function getSnippet(indent, maxLength) {
+  var head, start, tail, end, snippet;
+
+  if (!this.buffer) return null;
+
+  indent = indent || 4;
+  maxLength = maxLength || 75;
+
+  head = '';
+  start = this.position;
+
+  while (start > 0 && '\x00\r\n\x85\u2028\u2029'.indexOf(this.buffer.charAt(start - 1)) === -1) {
+    start -= 1;
+    if (this.position - start > (maxLength / 2 - 1)) {
+      head = ' ... ';
+      start += 5;
+      break;
+    }
+  }
+
+  tail = '';
+  end = this.position;
+
+  while (end < this.buffer.length && '\x00\r\n\x85\u2028\u2029'.indexOf(this.buffer.charAt(end)) === -1) {
+    end += 1;
+    if (end - this.position > (maxLength / 2 - 1)) {
+      tail = ' ... ';
+      end -= 5;
+      break;
+    }
+  }
+
+  snippet = this.buffer.slice(start, end);
+
+  return common.repeat(' ', indent) + head + snippet + tail + '\n' +
+         common.repeat(' ', indent + this.position - start + head.length) + '^';
+};
+
+
+Mark.prototype.toString = function toString(compact) {
+  var snippet, where = '';
+
+  if (this.name) {
+    where += 'in "' + this.name + '" ';
+  }
+
+  where += 'at line ' + (this.line + 1) + ', column ' + (this.column + 1);
+
+  if (!compact) {
+    snippet = this.getSnippet();
+
+    if (snippet) {
+      where += ':\n' + snippet;
+    }
+  }
+
+  return where;
+};
+
+
+module.exports = Mark;
+
+},{"./common":2}],7:[function(require,module,exports){
+'use strict';
+
+/*eslint-disable max-len*/
+
+var common        = require('./common');
+var YAMLException = require('./exception');
+var Type          = require('./type');
+
+
+function compileList(schema, name, result) {
+  var exclude = [];
+
+  schema.include.forEach(function (includedSchema) {
+    result = compileList(includedSchema, name, result);
+  });
+
+  schema[name].forEach(function (currentType) {
+    result.forEach(function (previousType, previousIndex) {
+      if (previousType.tag === currentType.tag) {
+        exclude.push(previousIndex);
+      }
+    });
+
+    result.push(currentType);
+  });
+
+  return result.filter(function (type, index) {
+    return exclude.indexOf(index) === -1;
+  });
+}
+
+
+function compileMap(/* lists... */) {
+  var result = {}, index, length;
+
+  function collectType(type) {
+    result[type.tag] = type;
+  }
+
+  for (index = 0, length = arguments.length; index < length; index += 1) {
+    arguments[index].forEach(collectType);
+  }
+
+  return result;
+}
+
+
+function Schema(definition) {
+  this.include  = definition.include  || [];
+  this.implicit = definition.implicit || [];
+  this.explicit = definition.explicit || [];
+
+  this.implicit.forEach(function (type) {
+    if (type.loadKind && type.loadKind !== 'scalar') {
+      throw new YAMLException('There is a non-scalar type in the implicit list of a schema. Implicit resolving of such types is not supported.');
+    }
+  });
+
+  this.compiledImplicit = compileList(this, 'implicit', []);
+  this.compiledExplicit = compileList(this, 'explicit', []);
+  this.compiledTypeMap  = compileMap(this.compiledImplicit, this.compiledExplicit);
+}
+
+
+Schema.DEFAULT = null;
+
+
+Schema.create = function createSchema() {
+  var schemas, types;
+
+  switch (arguments.length) {
+    case 1:
+      schemas = Schema.DEFAULT;
+      types = arguments[0];
+      break;
+
+    case 2:
+      schemas = arguments[0];
+      types = arguments[1];
+      break;
+
+    default:
+      throw new YAMLException('Wrong number of arguments for Schema.create function');
+  }
+
+  schemas = common.toArray(schemas);
+  types = common.toArray(types);
+
+  if (!schemas.every(function (schema) { return schema instanceof Schema; })) {
+    throw new YAMLException('Specified list of super schemas (or a single Schema object) contains a non-Schema object.');
+  }
+
+  if (!types.every(function (type) { return type instanceof Type; })) {
+    throw new YAMLException('Specified list of YAML types (or a single Type object) contains a non-Type object.');
+  }
+
+  return new Schema({
+    include: schemas,
+    explicit: types
+  });
+};
+
+
+module.exports = Schema;
+
+},{"./common":2,"./exception":4,"./type":13}],8:[function(require,module,exports){
+// Standard YAML's Core schema.
+// http://www.yaml.org/spec/1.2/spec.html#id2804923
+//
+// NOTE: JS-YAML does not support schema-specific tag resolution restrictions.
+// So, Core schema has no distinctions from JSON schema is JS-YAML.
+
+
+'use strict';
+
+
+var Schema = require('../schema');
+
+
+module.exports = new Schema({
+  include: [
+    require('./json')
+  ]
+});
+
+},{"../schema":7,"./json":12}],9:[function(require,module,exports){
+// JS-YAML's default schema for `load` function.
+// It is not described in the YAML specification.
+//
+// This schema is based on JS-YAML's default safe schema and includes
+// JavaScript-specific types: !!js/undefined, !!js/regexp and !!js/function.
+//
+// Also this schema is used as default base schema at `Schema.create` function.
+
+
+'use strict';
+
+
+var Schema = require('../schema');
+
+
+module.exports = Schema.DEFAULT = new Schema({
+  include: [
+    require('./default_safe')
+  ],
+  explicit: [
+    require('../type/js/undefined'),
+    require('../type/js/regexp'),
+    require('../type/js/function')
+  ]
+});
+
+},{"../schema":7,"../type/js/function":18,"../type/js/regexp":19,"../type/js/undefined":20,"./default_safe":10}],10:[function(require,module,exports){
+// JS-YAML's default schema for `safeLoad` function.
+// It is not described in the YAML specification.
+//
+// This schema is based on standard YAML's Core schema and includes most of
+// extra types described at YAML tag repository. (http://yaml.org/type/)
+
+
+'use strict';
+
+
+var Schema = require('../schema');
+
+
+module.exports = new Schema({
+  include: [
+    require('./core')
+  ],
+  implicit: [
+    require('../type/timestamp'),
+    require('../type/merge')
+  ],
+  explicit: [
+    require('../type/binary'),
+    require('../type/omap'),
+    require('../type/pairs'),
+    require('../type/set')
+  ]
+});
+
+},{"../schema":7,"../type/binary":14,"../type/merge":22,"../type/omap":24,"../type/pairs":25,"../type/set":27,"../type/timestamp":29,"./core":8}],11:[function(require,module,exports){
+// Standard YAML's Failsafe schema.
+// http://www.yaml.org/spec/1.2/spec.html#id2802346
+
+
+'use strict';
+
+
+var Schema = require('../schema');
+
+
+module.exports = new Schema({
+  explicit: [
+    require('../type/str'),
+    require('../type/seq'),
+    require('../type/map')
+  ]
+});
+
+},{"../schema":7,"../type/map":21,"../type/seq":26,"../type/str":28}],12:[function(require,module,exports){
+// Standard YAML's JSON schema.
+// http://www.yaml.org/spec/1.2/spec.html#id2803231
+//
+// NOTE: JS-YAML does not support schema-specific tag resolution restrictions.
+// So, this schema is not such strict as defined in the YAML specification.
+// It allows numbers in binary notaion, use `Null` and `NULL` as `null`, etc.
+
+
+'use strict';
+
+
+var Schema = require('../schema');
+
+
+module.exports = new Schema({
+  include: [
+    require('./failsafe')
+  ],
+  implicit: [
+    require('../type/null'),
+    require('../type/bool'),
+    require('../type/int'),
+    require('../type/float')
+  ]
+});
+
+},{"../schema":7,"../type/bool":15,"../type/float":16,"../type/int":17,"../type/null":23,"./failsafe":11}],13:[function(require,module,exports){
+'use strict';
+
+var YAMLException = require('./exception');
+
+var TYPE_CONSTRUCTOR_OPTIONS = [
+  'kind',
+  'resolve',
+  'construct',
+  'instanceOf',
+  'predicate',
+  'represent',
+  'defaultStyle',
+  'styleAliases'
+];
+
+var YAML_NODE_KINDS = [
+  'scalar',
+  'sequence',
+  'mapping'
+];
+
+function compileStyleAliases(map) {
+  var result = {};
+
+  if (map !== null) {
+    Object.keys(map).forEach(function (style) {
+      map[style].forEach(function (alias) {
+        result[String(alias)] = style;
+      });
+    });
+  }
+
+  return result;
+}
+
+function Type(tag, options) {
+  options = options || {};
+
+  Object.keys(options).forEach(function (name) {
+    if (TYPE_CONSTRUCTOR_OPTIONS.indexOf(name) === -1) {
+      throw new YAMLException('Unknown option "' + name + '" is met in definition of "' + tag + '" YAML type.');
+    }
+  });
+
+  // TODO: Add tag format check.
+  this.tag          = tag;
+  this.kind         = options['kind']         || null;
+  this.resolve      = options['resolve']      || function () { return true; };
+  this.construct    = options['construct']    || function (data) { return data; };
+  this.instanceOf   = options['instanceOf']   || null;
+  this.predicate    = options['predicate']    || null;
+  this.represent    = options['represent']    || null;
+  this.defaultStyle = options['defaultStyle'] || null;
+  this.styleAliases = compileStyleAliases(options['styleAliases'] || null);
+
+  if (YAML_NODE_KINDS.indexOf(this.kind) === -1) {
+    throw new YAMLException('Unknown kind "' + this.kind + '" is specified for "' + tag + '" YAML type.');
+  }
+}
+
+module.exports = Type;
+
+},{"./exception":4}],14:[function(require,module,exports){
+'use strict';
+
+/*eslint-disable no-bitwise*/
+
+var NodeBuffer;
+
+try {
+  // A trick for browserified version, to not include `Buffer` shim
+  var _require = require;
+  NodeBuffer = _require('buffer').Buffer;
+} catch (__) {}
+
+var Type       = require('../type');
+
+
+// [ 64, 65, 66 ] -> [ padding, CR, LF ]
+var BASE64_MAP = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=\n\r';
+
+
+function resolveYamlBinary(data) {
+  if (data === null) return false;
+
+  var code, idx, bitlen = 0, max = data.length, map = BASE64_MAP;
+
+  // Convert one by one.
+  for (idx = 0; idx < max; idx++) {
+    code = map.indexOf(data.charAt(idx));
+
+    // Skip CR/LF
+    if (code > 64) continue;
+
+    // Fail on illegal characters
+    if (code < 0) return false;
+
+    bitlen += 6;
+  }
+
+  // If there are any bits left, source was corrupted
+  return (bitlen % 8) === 0;
+}
+
+function constructYamlBinary(data) {
+  var idx, tailbits,
+      input = data.replace(/[\r\n=]/g, ''), // remove CR/LF & padding to simplify scan
+      max = input.length,
+      map = BASE64_MAP,
+      bits = 0,
+      result = [];
+
+  // Collect by 6*4 bits (3 bytes)
+
+  for (idx = 0; idx < max; idx++) {
+    if ((idx % 4 === 0) && idx) {
+      result.push((bits >> 16) & 0xFF);
+      result.push((bits >> 8) & 0xFF);
+      result.push(bits & 0xFF);
+    }
+
+    bits = (bits << 6) | map.indexOf(input.charAt(idx));
+  }
+
+  // Dump tail
+
+  tailbits = (max % 4) * 6;
+
+  if (tailbits === 0) {
+    result.push((bits >> 16) & 0xFF);
+    result.push((bits >> 8) & 0xFF);
+    result.push(bits & 0xFF);
+  } else if (tailbits === 18) {
+    result.push((bits >> 10) & 0xFF);
+    result.push((bits >> 2) & 0xFF);
+  } else if (tailbits === 12) {
+    result.push((bits >> 4) & 0xFF);
+  }
+
+  // Wrap into Buffer for NodeJS and leave Array for browser
+  if (NodeBuffer) return new NodeBuffer(result);
+
+  return result;
+}
+
+function representYamlBinary(object /*, style*/) {
+  var result = '', bits = 0, idx, tail,
+      max = object.length,
+      map = BASE64_MAP;
+
+  // Convert every three bytes to 4 ASCII characters.
+
+  for (idx = 0; idx < max; idx++) {
+    if ((idx % 3 === 0) && idx) {
+      result += map[(bits >> 18) & 0x3F];
+      result += map[(bits >> 12) & 0x3F];
+      result += map[(bits >> 6) & 0x3F];
+      result += map[bits & 0x3F];
+    }
+
+    bits = (bits << 8) + object[idx];
+  }
+
+  // Dump tail
+
+  tail = max % 3;
+
+  if (tail === 0) {
+    result += map[(bits >> 18) & 0x3F];
+    result += map[(bits >> 12) & 0x3F];
+    result += map[(bits >> 6) & 0x3F];
+    result += map[bits & 0x3F];
+  } else if (tail === 2) {
+    result += map[(bits >> 10) & 0x3F];
+    result += map[(bits >> 4) & 0x3F];
+    result += map[(bits << 2) & 0x3F];
+    result += map[64];
+  } else if (tail === 1) {
+    result += map[(bits >> 2) & 0x3F];
+    result += map[(bits << 4) & 0x3F];
+    result += map[64];
+    result += map[64];
+  }
+
+  return result;
+}
+
+function isBinary(object) {
+  return NodeBuffer && NodeBuffer.isBuffer(object);
+}
+
+module.exports = new Type('tag:yaml.org,2002:binary', {
+  kind: 'scalar',
+  resolve: resolveYamlBinary,
+  construct: constructYamlBinary,
+  predicate: isBinary,
+  represent: representYamlBinary
+});
+
+},{"../type":13}],15:[function(require,module,exports){
+'use strict';
+
+var Type = require('../type');
+
+function resolveYamlBoolean(data) {
+  if (data === null) return false;
+
+  var max = data.length;
+
+  return (max === 4 && (data === 'true' || data === 'True' || data === 'TRUE')) ||
+         (max === 5 && (data === 'false' || data === 'False' || data === 'FALSE'));
+}
+
+function constructYamlBoolean(data) {
+  return data === 'true' ||
+         data === 'True' ||
+         data === 'TRUE';
+}
+
+function isBoolean(object) {
+  return Object.prototype.toString.call(object) === '[object Boolean]';
+}
+
+module.exports = new Type('tag:yaml.org,2002:bool', {
+  kind: 'scalar',
+  resolve: resolveYamlBoolean,
+  construct: constructYamlBoolean,
+  predicate: isBoolean,
+  represent: {
+    lowercase: function (object) { return object ? 'true' : 'false'; },
+    uppercase: function (object) { return object ? 'TRUE' : 'FALSE'; },
+    camelcase: function (object) { return object ? 'True' : 'False'; }
+  },
+  defaultStyle: 'lowercase'
+});
+
+},{"../type":13}],16:[function(require,module,exports){
+'use strict';
+
+var common = require('../common');
+var Type   = require('../type');
+
+var YAML_FLOAT_PATTERN = new RegExp(
+  '^(?:[-+]?(?:[0-9][0-9_]*)\\.[0-9_]*(?:[eE][-+][0-9]+)?' +
+  '|\\.[0-9_]+(?:[eE][-+][0-9]+)?' +
+  '|[-+]?[0-9][0-9_]*(?::[0-5]?[0-9])+\\.[0-9_]*' +
+  '|[-+]?\\.(?:inf|Inf|INF)' +
+  '|\\.(?:nan|NaN|NAN))$');
+
+function resolveYamlFloat(data) {
+  if (data === null) return false;
+
+  if (!YAML_FLOAT_PATTERN.test(data)) return false;
+
+  return true;
+}
+
+function constructYamlFloat(data) {
+  var value, sign, base, digits;
+
+  value  = data.replace(/_/g, '').toLowerCase();
+  sign   = value[0] === '-' ? -1 : 1;
+  digits = [];
+
+  if ('+-'.indexOf(value[0]) >= 0) {
+    value = value.slice(1);
+  }
+
+  if (value === '.inf') {
+    return (sign === 1) ? Number.POSITIVE_INFINITY : Number.NEGATIVE_INFINITY;
+
+  } else if (value === '.nan') {
+    return NaN;
+
+  } else if (value.indexOf(':') >= 0) {
+    value.split(':').forEach(function (v) {
+      digits.unshift(parseFloat(v, 10));
+    });
+
+    value = 0.0;
+    base = 1;
+
+    digits.forEach(function (d) {
+      value += d * base;
+      base *= 60;
+    });
+
+    return sign * value;
+
+  }
+  return sign * parseFloat(value, 10);
+}
+
+
+var SCIENTIFIC_WITHOUT_DOT = /^[-+]?[0-9]+e/;
+
+function representYamlFloat(object, style) {
+  var res;
+
+  if (isNaN(object)) {
+    switch (style) {
+      case 'lowercase': return '.nan';
+      case 'uppercase': return '.NAN';
+      case 'camelcase': return '.NaN';
+    }
+  } else if (Number.POSITIVE_INFINITY === object) {
+    switch (style) {
+      case 'lowercase': return '.inf';
+      case 'uppercase': return '.INF';
+      case 'camelcase': return '.Inf';
+    }
+  } else if (Number.NEGATIVE_INFINITY === object) {
+    switch (style) {
+      case 'lowercase': return '-.inf';
+      case 'uppercase': return '-.INF';
+      case 'camelcase': return '-.Inf';
+    }
+  } else if (common.isNegativeZero(object)) {
+    return '-0.0';
+  }
+
+  res = object.toString(10);
+
+  // JS stringifier can build scientific format without dots: 5e-100,
+  // while YAML requres dot: 5.e-100. Fix it with simple hack
+
+  return SCIENTIFIC_WITHOUT_DOT.test(res) ? res.replace('e', '.e') : res;
+}
+
+function isFloat(object) {
+  return (Object.prototype.toString.call(object) === '[object Number]') &&
+         (object % 1 !== 0 || common.isNegativeZero(object));
+}
+
+module.exports = new Type('tag:yaml.org,2002:float', {
+  kind: 'scalar',
+  resolve: resolveYamlFloat,
+  construct: constructYamlFloat,
+  predicate: isFloat,
+  represent: representYamlFloat,
+  defaultStyle: 'lowercase'
+});
+
+},{"../common":2,"../type":13}],17:[function(require,module,exports){
+'use strict';
+
+var common = require('../common');
+var Type   = require('../type');
+
+function isHexCode(c) {
+  return ((0x30/* 0 */ <= c) && (c <= 0x39/* 9 */)) ||
+         ((0x41/* A */ <= c) && (c <= 0x46/* F */)) ||
+         ((0x61/* a */ <= c) && (c <= 0x66/* f */));
+}
+
+function isOctCode(c) {
+  return ((0x30/* 0 */ <= c) && (c <= 0x37/* 7 */));
+}
+
+function isDecCode(c) {
+  return ((0x30/* 0 */ <= c) && (c <= 0x39/* 9 */));
+}
+
+function resolveYamlInteger(data) {
+  if (data === null) return false;
+
+  var max = data.length,
+      index = 0,
+      hasDigits = false,
+      ch;
+
+  if (!max) return false;
+
+  ch = data[index];
+
+  // sign
+  if (ch === '-' || ch === '+') {
+    ch = data[++index];
+  }
+
+  if (ch === '0') {
+    // 0
+    if (index + 1 === max) return true;
+    ch = data[++index];
+
+    // base 2, base 8, base 16
+
+    if (ch === 'b') {
+      // base 2
+      index++;
+
+      for (; index < max; index++) {
+        ch = data[index];
+        if (ch === '_') continue;
+        if (ch !== '0' && ch !== '1') return false;
+        hasDigits = true;
+      }
+      return hasDigits;
+    }
+
+
+    if (ch === 'x') {
+      // base 16
+      index++;
+
+      for (; index < max; index++) {
+        ch = data[index];
+        if (ch === '_') continue;
+        if (!isHexCode(data.charCodeAt(index))) return false;
+        hasDigits = true;
+      }
+      return hasDigits;
+    }
+
+    // base 8
+    for (; index < max; index++) {
+      ch = data[index];
+      if (ch === '_') continue;
+      if (!isOctCode(data.charCodeAt(index))) return false;
+      hasDigits = true;
+    }
+    return hasDigits;
+  }
+
+  // base 10 (except 0) or base 60
+
+  for (; index < max; index++) {
+    ch = data[index];
+    if (ch === '_') continue;
+    if (ch === ':') break;
+    if (!isDecCode(data.charCodeAt(index))) {
+      return false;
+    }
+    hasDigits = true;
+  }
+
+  if (!hasDigits) return false;
+
+  // if !base60 - done;
+  if (ch !== ':') return true;
+
+  // base60 almost not used, no needs to optimize
+  return /^(:[0-5]?[0-9])+$/.test(data.slice(index));
+}
+
+function constructYamlInteger(data) {
+  var value = data, sign = 1, ch, base, digits = [];
+
+  if (value.indexOf('_') !== -1) {
+    value = value.replace(/_/g, '');
+  }
+
+  ch = value[0];
+
+  if (ch === '-' || ch === '+') {
+    if (ch === '-') sign = -1;
+    value = value.slice(1);
+    ch = value[0];
+  }
+
+  if (value === '0') return 0;
+
+  if (ch === '0') {
+    if (value[1] === 'b') return sign * parseInt(value.slice(2), 2);
+    if (value[1] === 'x') return sign * parseInt(value, 16);
+    return sign * parseInt(value, 8);
+  }
+
+  if (value.indexOf(':') !== -1) {
+    value.split(':').forEach(function (v) {
+      digits.unshift(parseInt(v, 10));
+    });
+
+    value = 0;
+    base = 1;
+
+    digits.forEach(function (d) {
+      value += (d * base);
+      base *= 60;
+    });
+
+    return sign * value;
+
+  }
+
+  return sign * parseInt(value, 10);
+}
+
+function isInteger(object) {
+  return (Object.prototype.toString.call(object)) === '[object Number]' &&
+         (object % 1 === 0 && !common.isNegativeZero(object));
+}
+
+module.exports = new Type('tag:yaml.org,2002:int', {
+  kind: 'scalar',
+  resolve: resolveYamlInteger,
+  construct: constructYamlInteger,
+  predicate: isInteger,
+  represent: {
+    binary:      function (object) { return '0b' + object.toString(2); },
+    octal:       function (object) { return '0'  + object.toString(8); },
+    decimal:     function (object) { return        object.toString(10); },
+    hexadecimal: function (object) { return '0x' + object.toString(16).toUpperCase(); }
+  },
+  defaultStyle: 'decimal',
+  styleAliases: {
+    binary:      [ 2,  'bin' ],
+    octal:       [ 8,  'oct' ],
+    decimal:     [ 10, 'dec' ],
+    hexadecimal: [ 16, 'hex' ]
+  }
+});
+
+},{"../common":2,"../type":13}],18:[function(require,module,exports){
+'use strict';
+
+var esprima;
+
+// Browserified version does not have esprima
+//
+// 1. For node.js just require module as deps
+// 2. For browser try to require mudule via external AMD system.
+//    If not found - try to fallback to window.esprima. If not
+//    found too - then fail to parse.
+//
+try {
+  // workaround to exclude package from browserify list.
+  var _require = require;
+  esprima = _require('esprima');
+} catch (_) {
+  /*global window */
+  if (typeof window !== 'undefined') esprima = window.esprima;
+}
+
+var Type = require('../../type');
+
+function resolveJavascriptFunction(data) {
+  if (data === null) return false;
+
+  try {
+    var source = '(' + data + ')',
+        ast    = esprima.parse(source, { range: true });
+
+    if (ast.type                    !== 'Program'             ||
+        ast.body.length             !== 1                     ||
+        ast.body[0].type            !== 'ExpressionStatement' ||
+        ast.body[0].expression.type !== 'FunctionExpression') {
+      return false;
+    }
+
+    return true;
+  } catch (err) {
+    return false;
+  }
+}
+
+function constructJavascriptFunction(data) {
+  /*jslint evil:true*/
+
+  var source = '(' + data + ')',
+      ast    = esprima.parse(source, { range: true }),
+      params = [],
+      body;
+
+  if (ast.type                    !== 'Program'             ||
+      ast.body.length             !== 1                     ||
+      ast.body[0].type            !== 'ExpressionStatement' ||
+      ast.body[0].expression.type !== 'FunctionExpression') {
+    throw new Error('Failed to resolve function');
+  }
+
+  ast.body[0].expression.params.forEach(function (param) {
+    params.push(param.name);
+  });
+
+  body = ast.body[0].expression.body.range;
+
+  // Esprima's ranges include the first '{' and the last '}' characters on
+  // function expressions. So cut them out.
+  /*eslint-disable no-new-func*/
+  return new Function(params, source.slice(body[0] + 1, body[1] - 1));
+}
+
+function representJavascriptFunction(object /*, style*/) {
+  return object.toString();
+}
+
+function isFunction(object) {
+  return Object.prototype.toString.call(object) === '[object Function]';
+}
+
+module.exports = new Type('tag:yaml.org,2002:js/function', {
+  kind: 'scalar',
+  resolve: resolveJavascriptFunction,
+  construct: constructJavascriptFunction,
+  predicate: isFunction,
+  represent: representJavascriptFunction
+});
+
+},{"../../type":13}],19:[function(require,module,exports){
+'use strict';
+
+var Type = require('../../type');
+
+function resolveJavascriptRegExp(data) {
+  if (data === null) return false;
+  if (data.length === 0) return false;
+
+  var regexp = data,
+      tail   = /\/([gim]*)$/.exec(data),
+      modifiers = '';
+
+  // if regexp starts with '/' it can have modifiers and must be properly closed
+  // `/foo/gim` - modifiers tail can be maximum 3 chars
+  if (regexp[0] === '/') {
+    if (tail) modifiers = tail[1];
+
+    if (modifiers.length > 3) return false;
+    // if expression starts with /, is should be properly terminated
+    if (regexp[regexp.length - modifiers.length - 1] !== '/') return false;
+  }
+
+  return true;
+}
+
+function constructJavascriptRegExp(data) {
+  var regexp = data,
+      tail   = /\/([gim]*)$/.exec(data),
+      modifiers = '';
+
+  // `/foo/gim` - tail can be maximum 4 chars
+  if (regexp[0] === '/') {
+    if (tail) modifiers = tail[1];
+    regexp = regexp.slice(1, regexp.length - modifiers.length - 1);
+  }
+
+  return new RegExp(regexp, modifiers);
+}
+
+function representJavascriptRegExp(object /*, style*/) {
+  var result = '/' + object.source + '/';
+
+  if (object.global) result += 'g';
+  if (object.multiline) result += 'm';
+  if (object.ignoreCase) result += 'i';
+
+  return result;
+}
+
+function isRegExp(object) {
+  return Object.prototype.toString.call(object) === '[object RegExp]';
+}
+
+module.exports = new Type('tag:yaml.org,2002:js/regexp', {
+  kind: 'scalar',
+  resolve: resolveJavascriptRegExp,
+  construct: constructJavascriptRegExp,
+  predicate: isRegExp,
+  represent: representJavascriptRegExp
+});
+
+},{"../../type":13}],20:[function(require,module,exports){
+'use strict';
+
+var Type = require('../../type');
+
+function resolveJavascriptUndefined() {
+  return true;
+}
+
+function constructJavascriptUndefined() {
+  /*eslint-disable no-undefined*/
+  return undefined;
+}
+
+function representJavascriptUndefined() {
+  return '';
+}
+
+function isUndefined(object) {
+  return typeof object === 'undefined';
+}
+
+module.exports = new Type('tag:yaml.org,2002:js/undefined', {
+  kind: 'scalar',
+  resolve: resolveJavascriptUndefined,
+  construct: constructJavascriptUndefined,
+  predicate: isUndefined,
+  represent: representJavascriptUndefined
+});
+
+},{"../../type":13}],21:[function(require,module,exports){
+'use strict';
+
+var Type = require('../type');
+
+module.exports = new Type('tag:yaml.org,2002:map', {
+  kind: 'mapping',
+  construct: function (data) { return data !== null ? data : {}; }
+});
+
+},{"../type":13}],22:[function(require,module,exports){
+'use strict';
+
+var Type = require('../type');
+
+function resolveYamlMerge(data) {
+  return data === '<<' || data === null;
+}
+
+module.exports = new Type('tag:yaml.org,2002:merge', {
+  kind: 'scalar',
+  resolve: resolveYamlMerge
+});
+
+},{"../type":13}],23:[function(require,module,exports){
+'use strict';
+
+var Type = require('../type');
+
+function resolveYamlNull(data) {
+  if (data === null) return true;
+
+  var max = data.length;
+
+  return (max === 1 && data === '~') ||
+         (max === 4 && (data === 'null' || data === 'Null' || data === 'NULL'));
+}
+
+function constructYamlNull() {
+  return null;
+}
+
+function isNull(object) {
+  return object === null;
+}
+
+module.exports = new Type('tag:yaml.org,2002:null', {
+  kind: 'scalar',
+  resolve: resolveYamlNull,
+  construct: constructYamlNull,
+  predicate: isNull,
+  represent: {
+    canonical: function () { return '~';    },
+    lowercase: function () { return 'null'; },
+    uppercase: function () { return 'NULL'; },
+    camelcase: function () { return 'Null'; }
+  },
+  defaultStyle: 'lowercase'
+});
+
+},{"../type":13}],24:[function(require,module,exports){
+'use strict';
+
+var Type = require('../type');
+
+var _hasOwnProperty = Object.prototype.hasOwnProperty;
+var _toString       = Object.prototype.toString;
+
+function resolveYamlOmap(data) {
+  if (data === null) return true;
+
+  var objectKeys = [], index, length, pair, pairKey, pairHasKey,
+      object = data;
+
+  for (index = 0, length = object.length; index < length; index += 1) {
+    pair = object[index];
+    pairHasKey = false;
+
+    if (_toString.call(pair) !== '[object Object]') return false;
+
+    for (pairKey in pair) {
+      if (_hasOwnProperty.call(pair, pairKey)) {
+        if (!pairHasKey) pairHasKey = true;
+        else return false;
+      }
+    }
+
+    if (!pairHasKey) return false;
+
+    if (objectKeys.indexOf(pairKey) === -1) objectKeys.push(pairKey);
+    else return false;
+  }
+
+  return true;
+}
+
+function constructYamlOmap(data) {
+  return data !== null ? data : [];
+}
+
+module.exports = new Type('tag:yaml.org,2002:omap', {
+  kind: 'sequence',
+  resolve: resolveYamlOmap,
+  construct: constructYamlOmap
+});
+
+},{"../type":13}],25:[function(require,module,exports){
+'use strict';
+
+var Type = require('../type');
+
+var _toString = Object.prototype.toString;
+
+function resolveYamlPairs(data) {
+  if (data === null) return true;
+
+  var index, length, pair, keys, result,
+      object = data;
+
+  result = new Array(object.length);
+
+  for (index = 0, length = object.length; index < length; index += 1) {
+    pair = object[index];
+
+    if (_toString.call(pair) !== '[object Object]') return false;
+
+    keys = Object.keys(pair);
+
+    if (keys.length !== 1) return false;
+
+    result[index] = [ keys[0], pair[keys[0]] ];
+  }
+
+  return true;
+}
+
+function constructYamlPairs(data) {
+  if (data === null) return [];
+
+  var index, length, pair, keys, result,
+      object = data;
+
+  result = new Array(object.length);
+
+  for (index = 0, length = object.length; index < length; index += 1) {
+    pair = object[index];
+
+    keys = Object.keys(pair);
+
+    result[index] = [ keys[0], pair[keys[0]] ];
+  }
+
+  return result;
+}
+
+module.exports = new Type('tag:yaml.org,2002:pairs', {
+  kind: 'sequence',
+  resolve: resolveYamlPairs,
+  construct: constructYamlPairs
+});
+
+},{"../type":13}],26:[function(require,module,exports){
+'use strict';
+
+var Type = require('../type');
+
+module.exports = new Type('tag:yaml.org,2002:seq', {
+  kind: 'sequence',
+  construct: function (data) { return data !== null ? data : []; }
+});
+
+},{"../type":13}],27:[function(require,module,exports){
+'use strict';
+
+var Type = require('../type');
+
+var _hasOwnProperty = Object.prototype.hasOwnProperty;
+
+function resolveYamlSet(data) {
+  if (data === null) return true;
+
+  var key, object = data;
+
+  for (key in object) {
+    if (_hasOwnProperty.call(object, key)) {
+      if (object[key] !== null) return false;
+    }
+  }
+
+  return true;
+}
+
+function constructYamlSet(data) {
+  return data !== null ? data : {};
+}
+
+module.exports = new Type('tag:yaml.org,2002:set', {
+  kind: 'mapping',
+  resolve: resolveYamlSet,
+  construct: constructYamlSet
+});
+
+},{"../type":13}],28:[function(require,module,exports){
+'use strict';
+
+var Type = require('../type');
+
+module.exports = new Type('tag:yaml.org,2002:str', {
+  kind: 'scalar',
+  construct: function (data) { return data !== null ? data : ''; }
+});
+
+},{"../type":13}],29:[function(require,module,exports){
+'use strict';
+
+var Type = require('../type');
+
+var YAML_DATE_REGEXP = new RegExp(
+  '^([0-9][0-9][0-9][0-9])'          + // [1] year
+  '-([0-9][0-9])'                    + // [2] month
+  '-([0-9][0-9])$');                   // [3] day
+
+var YAML_TIMESTAMP_REGEXP = new RegExp(
+  '^([0-9][0-9][0-9][0-9])'          + // [1] year
+  '-([0-9][0-9]?)'                   + // [2] month
+  '-([0-9][0-9]?)'                   + // [3] day
+  '(?:[Tt]|[ \\t]+)'                 + // ...
+  '([0-9][0-9]?)'                    + // [4] hour
+  ':([0-9][0-9])'                    + // [5] minute
+  ':([0-9][0-9])'                    + // [6] second
+  '(?:\\.([0-9]*))?'                 + // [7] fraction
+  '(?:[ \\t]*(Z|([-+])([0-9][0-9]?)' + // [8] tz [9] tz_sign [10] tz_hour
+  '(?::([0-9][0-9]))?))?$');           // [11] tz_minute
+
+function resolveYamlTimestamp(data) {
+  if (data === null) return false;
+  if (YAML_DATE_REGEXP.exec(data) !== null) return true;
+  if (YAML_TIMESTAMP_REGEXP.exec(data) !== null) return true;
+  return false;
+}
+
+function constructYamlTimestamp(data) {
+  var match, year, month, day, hour, minute, second, fraction = 0,
+      delta = null, tz_hour, tz_minute, date;
+
+  match = YAML_DATE_REGEXP.exec(data);
+  if (match === null) match = YAML_TIMESTAMP_REGEXP.exec(data);
+
+  if (match === null) throw new Error('Date resolve error');
+
+  // match: [1] year [2] month [3] day
+
+  year = +(match[1]);
+  month = +(match[2]) - 1; // JS month starts with 0
+  day = +(match[3]);
+
+  if (!match[4]) { // no hour
+    return new Date(Date.UTC(year, month, day));
+  }
+
+  // match: [4] hour [5] minute [6] second [7] fraction
+
+  hour = +(match[4]);
+  minute = +(match[5]);
+  second = +(match[6]);
+
+  if (match[7]) {
+    fraction = match[7].slice(0, 3);
+    while (fraction.length < 3) { // milli-seconds
+      fraction += '0';
+    }
+    fraction = +fraction;
+  }
+
+  // match: [8] tz [9] tz_sign [10] tz_hour [11] tz_minute
+
+  if (match[9]) {
+    tz_hour = +(match[10]);
+    tz_minute = +(match[11] || 0);
+    delta = (tz_hour * 60 + tz_minute) * 60000; // delta in mili-seconds
+    if (match[9] === '-') delta = -delta;
+  }
+
+  date = new Date(Date.UTC(year, month, day, hour, minute, second, fraction));
+
+  if (delta) date.setTime(date.getTime() - delta);
+
+  return date;
+}
+
+function representYamlTimestamp(object /*, style*/) {
+  return object.toISOString();
+}
+
+module.exports = new Type('tag:yaml.org,2002:timestamp', {
+  kind: 'scalar',
+  resolve: resolveYamlTimestamp,
+  construct: constructYamlTimestamp,
+  instanceOf: Date,
+  represent: representYamlTimestamp
+});
+
+},{"../type":13}],"/":[function(require,module,exports){
+'use strict';
+
+
+var yaml = require('./lib/js-yaml.js');
+
+
+module.exports = yaml;
+
+},{"./lib/js-yaml.js":1}]},{},[])("/")
+});
+/* eslint-enable */
diff --git a/stdlib/nodejs/kernel.rb b/stdlib/nodejs/kernel.rb
new file mode 100644
index 00000000..c663256f
--- /dev/null
+++ b/stdlib/nodejs/kernel.rb
@@ -0,0 +1,34 @@
+require 'buffer'
+require 'corelib/process/status'
+
+module Kernel
+  @__child_process__ = `require('child_process')`
+  `var __child_process__ = #{@__child_process__}`
+
+  def system(*argv, exception: false)
+    env = {}
+    env = argv.shift if argv.first.is_a? Hash
+    env = ENV.merge(env).to_n
+    cmdname = argv.shift
+
+    out = if argv.empty?
+            `__child_process__.spawnSync(#{cmdname}, { shell: true, stdio: 'inherit', env: #{env} })`
+          elsif Array === cmdname
+            `__child_process__.spawnSync(#{cmdname[0]}, #{argv}, { argv0: #{cmdname[1]}, stdio: 'inherit', env: #{env} })`
+          else
+            `__child_process__.spawnSync(#{cmdname}, #{argv}, { stdio: 'inherit', env: #{env} })`
+          end
+
+    status = out.JS[:status]
+    status = 127 if `status === null`
+    pid = out.JS[:pid]
+
+    $? = Process::Status.new(status, pid)
+    raise "Command failed with exit #{status}: #{cmdname}" if exception && status != 0
+    status == 0
+  end
+
+  def `(cmdline)
+    Buffer.new(`__child_process__.execSync(#{cmdline})`).to_s.encode('UTF-8')
+  end
+end
diff --git a/stdlib/nodejs/node_modules/balanced-match/.npmignore b/stdlib/nodejs/node_modules/balanced-match/.npmignore
new file mode 100644
index 00000000..ae5d8c36
--- /dev/null
+++ b/stdlib/nodejs/node_modules/balanced-match/.npmignore
@@ -0,0 +1,5 @@
+test
+.gitignore
+.travis.yml
+Makefile
+example.js
diff --git a/stdlib/nodejs/node_modules/balanced-match/LICENSE.md b/stdlib/nodejs/node_modules/balanced-match/LICENSE.md
new file mode 100644
index 00000000..2cdc8e41
--- /dev/null
+++ b/stdlib/nodejs/node_modules/balanced-match/LICENSE.md
@@ -0,0 +1,21 @@
+(MIT)
+
+Copyright (c) 2013 Julian Gruber &lt;julian@juliangruber.com&gt;
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/stdlib/nodejs/node_modules/balanced-match/README.md b/stdlib/nodejs/node_modules/balanced-match/README.md
new file mode 100644
index 00000000..08e918c0
--- /dev/null
+++ b/stdlib/nodejs/node_modules/balanced-match/README.md
@@ -0,0 +1,91 @@
+# balanced-match
+
+Match balanced string pairs, like `{` and `}` or `<b>` and `</b>`. Supports regular expressions as well!
+
+[![build status](https://secure.travis-ci.org/juliangruber/balanced-match.svg)](http://travis-ci.org/juliangruber/balanced-match)
+[![downloads](https://img.shields.io/npm/dm/balanced-match.svg)](https://www.npmjs.org/package/balanced-match)
+
+[![testling badge](https://ci.testling.com/juliangruber/balanced-match.png)](https://ci.testling.com/juliangruber/balanced-match)
+
+## Example
+
+Get the first matching pair of braces:
+
+```js
+var balanced = require('balanced-match');
+
+console.log(balanced('{', '}', 'pre{in{nested}}post'));
+console.log(balanced('{', '}', 'pre{first}between{second}post'));
+console.log(balanced(/\s+\{\s+/, /\s+\}\s+/, 'pre  {   in{nest}   }  post'));
+```
+
+The matches are:
+
+```bash
+$ node example.js
+{ start: 3, end: 14, pre: 'pre', body: 'in{nested}', post: 'post' }
+{ start: 3,
+  end: 9,
+  pre: 'pre',
+  body: 'first',
+  post: 'between{second}post' }
+{ start: 3, end: 17, pre: 'pre', body: 'in{nest}', post: 'post' }
+```
+
+## API
+
+### var m = balanced(a, b, str)
+
+For the first non-nested matching pair of `a` and `b` in `str`, return an
+object with those keys:
+
+* **start** the index of the first match of `a`
+* **end** the index of the matching `b`
+* **pre** the preamble, `a` and `b` not included
+* **body** the match, `a` and `b` not included
+* **post** the postscript, `a` and `b` not included
+
+If there's no match, `undefined` will be returned.
+
+If the `str` contains more `a` than `b` / there are unmatched pairs, the first match that was closed will be used. For example, `{{a}` will match `['{', 'a', '']` and `{a}}` will match `['', 'a', '}']`.
+
+### var r = balanced.range(a, b, str)
+
+For the first non-nested matching pair of `a` and `b` in `str`, return an
+array with indexes: `[ <a index>, <b index> ]`.
+
+If there's no match, `undefined` will be returned.
+
+If the `str` contains more `a` than `b` / there are unmatched pairs, the first match that was closed will be used. For example, `{{a}` will match `[ 1, 3 ]` and `{a}}` will match `[0, 2]`.
+
+## Installation
+
+With [npm](https://npmjs.org) do:
+
+```bash
+npm install balanced-match
+```
+
+## License
+
+(MIT)
+
+Copyright (c) 2013 Julian Gruber &lt;julian@juliangruber.com&gt;
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/stdlib/nodejs/node_modules/balanced-match/index.js b/stdlib/nodejs/node_modules/balanced-match/index.js
new file mode 100644
index 00000000..1685a762
--- /dev/null
+++ b/stdlib/nodejs/node_modules/balanced-match/index.js
@@ -0,0 +1,59 @@
+'use strict';
+module.exports = balanced;
+function balanced(a, b, str) {
+  if (a instanceof RegExp) a = maybeMatch(a, str);
+  if (b instanceof RegExp) b = maybeMatch(b, str);
+
+  var r = range(a, b, str);
+
+  return r && {
+    start: r[0],
+    end: r[1],
+    pre: str.slice(0, r[0]),
+    body: str.slice(r[0] + a.length, r[1]),
+    post: str.slice(r[1] + b.length)
+  };
+}
+
+function maybeMatch(reg, str) {
+  var m = str.match(reg);
+  return m ? m[0] : null;
+}
+
+balanced.range = range;
+function range(a, b, str) {
+  var begs, beg, left, right, result;
+  var ai = str.indexOf(a);
+  var bi = str.indexOf(b, ai + 1);
+  var i = ai;
+
+  if (ai >= 0 && bi > 0) {
+    begs = [];
+    left = str.length;
+
+    while (i >= 0 && !result) {
+      if (i == ai) {
+        begs.push(i);
+        ai = str.indexOf(a, i + 1);
+      } else if (begs.length == 1) {
+        result = [ begs.pop(), bi ];
+      } else {
+        beg = begs.pop();
+        if (beg < left) {
+          left = beg;
+          right = bi;
+        }
+
+        bi = str.indexOf(b, i + 1);
+      }
+
+      i = ai < bi && ai >= 0 ? ai : bi;
+    }
+
+    if (begs.length) {
+      result = [ left, right ];
+    }
+  }
+
+  return result;
+}
diff --git a/stdlib/nodejs/node_modules/balanced-match/package.json b/stdlib/nodejs/node_modules/balanced-match/package.json
new file mode 100644
index 00000000..51fbd0ad
--- /dev/null
+++ b/stdlib/nodejs/node_modules/balanced-match/package.json
@@ -0,0 +1,77 @@
+{
+  "_from": "balanced-match@^1.0.0",
+  "_id": "balanced-match@1.0.0",
+  "_inBundle": false,
+  "_integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
+  "_location": "/balanced-match",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "range",
+    "registry": true,
+    "raw": "balanced-match@^1.0.0",
+    "name": "balanced-match",
+    "escapedName": "balanced-match",
+    "rawSpec": "^1.0.0",
+    "saveSpec": null,
+    "fetchSpec": "^1.0.0"
+  },
+  "_requiredBy": [
+    "/brace-expansion"
+  ],
+  "_resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
+  "_shasum": "89b4d199ab2bee49de164ea02b89ce462d71b767",
+  "_spec": "balanced-match@^1.0.0",
+  "_where": "/home/guillaume/workspace/opensource/opal/opal/stdlib/nodejs/node_modules/brace-expansion",
+  "author": {
+    "name": "Julian Gruber",
+    "email": "mail@juliangruber.com",
+    "url": "http://juliangruber.com"
+  },
+  "bugs": {
+    "url": "https://github.com/juliangruber/balanced-match/issues"
+  },
+  "bundleDependencies": false,
+  "dependencies": {},
+  "deprecated": false,
+  "description": "Match balanced character pairs, like \"{\" and \"}\"",
+  "devDependencies": {
+    "matcha": "^0.7.0",
+    "tape": "^4.6.0"
+  },
+  "homepage": "https://github.com/juliangruber/balanced-match",
+  "keywords": [
+    "match",
+    "regexp",
+    "test",
+    "balanced",
+    "parse"
+  ],
+  "license": "MIT",
+  "main": "index.js",
+  "name": "balanced-match",
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/juliangruber/balanced-match.git"
+  },
+  "scripts": {
+    "bench": "make bench",
+    "test": "make test"
+  },
+  "testling": {
+    "files": "test/*.js",
+    "browsers": [
+      "ie/8..latest",
+      "firefox/20..latest",
+      "firefox/nightly",
+      "chrome/25..latest",
+      "chrome/canary",
+      "opera/12..latest",
+      "opera/next",
+      "safari/5.1..latest",
+      "ipad/6.0..latest",
+      "iphone/6.0..latest",
+      "android-browser/4.2..latest"
+    ]
+  },
+  "version": "1.0.0"
+}
diff --git a/stdlib/nodejs/node_modules/brace-expansion/LICENSE b/stdlib/nodejs/node_modules/brace-expansion/LICENSE
new file mode 100644
index 00000000..de322667
--- /dev/null
+++ b/stdlib/nodejs/node_modules/brace-expansion/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2013 Julian Gruber <julian@juliangruber.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/stdlib/nodejs/node_modules/brace-expansion/README.md b/stdlib/nodejs/node_modules/brace-expansion/README.md
new file mode 100644
index 00000000..6b4e0e16
--- /dev/null
+++ b/stdlib/nodejs/node_modules/brace-expansion/README.md
@@ -0,0 +1,129 @@
+# brace-expansion
+
+[Brace expansion](https://www.gnu.org/software/bash/manual/html_node/Brace-Expansion.html), 
+as known from sh/bash, in JavaScript.
+
+[![build status](https://secure.travis-ci.org/juliangruber/brace-expansion.svg)](http://travis-ci.org/juliangruber/brace-expansion)
+[![downloads](https://img.shields.io/npm/dm/brace-expansion.svg)](https://www.npmjs.org/package/brace-expansion)
+[![Greenkeeper badge](https://badges.greenkeeper.io/juliangruber/brace-expansion.svg)](https://greenkeeper.io/)
+
+[![testling badge](https://ci.testling.com/juliangruber/brace-expansion.png)](https://ci.testling.com/juliangruber/brace-expansion)
+
+## Example
+
+```js
+var expand = require('brace-expansion');
+
+expand('file-{a,b,c}.jpg')
+// => ['file-a.jpg', 'file-b.jpg', 'file-c.jpg']
+
+expand('-v{,,}')
+// => ['-v', '-v', '-v']
+
+expand('file{0..2}.jpg')
+// => ['file0.jpg', 'file1.jpg', 'file2.jpg']
+
+expand('file-{a..c}.jpg')
+// => ['file-a.jpg', 'file-b.jpg', 'file-c.jpg']
+
+expand('file{2..0}.jpg')
+// => ['file2.jpg', 'file1.jpg', 'file0.jpg']
+
+expand('file{0..4..2}.jpg')
+// => ['file0.jpg', 'file2.jpg', 'file4.jpg']
+
+expand('file-{a..e..2}.jpg')
+// => ['file-a.jpg', 'file-c.jpg', 'file-e.jpg']
+
+expand('file{00..10..5}.jpg')
+// => ['file00.jpg', 'file05.jpg', 'file10.jpg']
+
+expand('{{A..C},{a..c}}')
+// => ['A', 'B', 'C', 'a', 'b', 'c']
+
+expand('ppp{,config,oe{,conf}}')
+// => ['ppp', 'pppconfig', 'pppoe', 'pppoeconf']
+```
+
+## API
+
+```js
+var expand = require('brace-expansion');
+```
+
+### var expanded = expand(str)
+
+Return an array of all possible and valid expansions of `str`. If none are
+found, `[str]` is returned.
+
+Valid expansions are:
+
+```js
+/^(.*,)+(.+)?$/
+// {a,b,...}
+```
+
+A comma separated list of options, like `{a,b}` or `{a,{b,c}}` or `{,a,}`.
+
+```js
+/^-?\d+\.\.-?\d+(\.\.-?\d+)?$/
+// {x..y[..incr]}
+```
+
+A numeric sequence from `x` to `y` inclusive, with optional increment.
+If `x` or `y` start with a leading `0`, all the numbers will be padded
+to have equal length. Negative numbers and backwards iteration work too.
+
+```js
+/^-?\d+\.\.-?\d+(\.\.-?\d+)?$/
+// {x..y[..incr]}
+```
+
+An alphabetic sequence from `x` to `y` inclusive, with optional increment.
+`x` and `y` must be exactly one character, and if given, `incr` must be a
+number.
+
+For compatibility reasons, the string `${` is not eligible for brace expansion.
+
+## Installation
+
+With [npm](https://npmjs.org) do:
+
+```bash
+npm install brace-expansion
+```
+
+## Contributors
+
+- [Julian Gruber](https://github.com/juliangruber)
+- [Isaac Z. Schlueter](https://github.com/isaacs)
+
+## Sponsors
+
+This module is proudly supported by my [Sponsors](https://github.com/juliangruber/sponsors)!
+
+Do you want to support modules like this to improve their quality, stability and weigh in on new features? Then please consider donating to my [Patreon](https://www.patreon.com/juliangruber). Not sure how much of my modules you're using? Try [feross/thanks](https://github.com/feross/thanks)!
+
+## License
+
+(MIT)
+
+Copyright (c) 2013 Julian Gruber &lt;julian@juliangruber.com&gt;
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/stdlib/nodejs/node_modules/brace-expansion/index.js b/stdlib/nodejs/node_modules/brace-expansion/index.js
new file mode 100644
index 00000000..0478be81
--- /dev/null
+++ b/stdlib/nodejs/node_modules/brace-expansion/index.js
@@ -0,0 +1,201 @@
+var concatMap = require('concat-map');
+var balanced = require('balanced-match');
+
+module.exports = expandTop;
+
+var escSlash = '\0SLASH'+Math.random()+'\0';
+var escOpen = '\0OPEN'+Math.random()+'\0';
+var escClose = '\0CLOSE'+Math.random()+'\0';
+var escComma = '\0COMMA'+Math.random()+'\0';
+var escPeriod = '\0PERIOD'+Math.random()+'\0';
+
+function numeric(str) {
+  return parseInt(str, 10) == str
+    ? parseInt(str, 10)
+    : str.charCodeAt(0);
+}
+
+function escapeBraces(str) {
+  return str.split('\\\\').join(escSlash)
+            .split('\\{').join(escOpen)
+            .split('\\}').join(escClose)
+            .split('\\,').join(escComma)
+            .split('\\.').join(escPeriod);
+}
+
+function unescapeBraces(str) {
+  return str.split(escSlash).join('\\')
+            .split(escOpen).join('{')
+            .split(escClose).join('}')
+            .split(escComma).join(',')
+            .split(escPeriod).join('.');
+}
+
+
+// Basically just str.split(","), but handling cases
+// where we have nested braced sections, which should be
+// treated as individual members, like {a,{b,c},d}
+function parseCommaParts(str) {
+  if (!str)
+    return [''];
+
+  var parts = [];
+  var m = balanced('{', '}', str);
+
+  if (!m)
+    return str.split(',');
+
+  var pre = m.pre;
+  var body = m.body;
+  var post = m.post;
+  var p = pre.split(',');
+
+  p[p.length-1] += '{' + body + '}';
+  var postParts = parseCommaParts(post);
+  if (post.length) {
+    p[p.length-1] += postParts.shift();
+    p.push.apply(p, postParts);
+  }
+
+  parts.push.apply(parts, p);
+
+  return parts;
+}
+
+function expandTop(str) {
+  if (!str)
+    return [];
+
+  // I don't know why Bash 4.3 does this, but it does.
+  // Anything starting with {} will have the first two bytes preserved
+  // but *only* at the top level, so {},a}b will not expand to anything,
+  // but a{},b}c will be expanded to [a}c,abc].
+  // One could argue that this is a bug in Bash, but since the goal of
+  // this module is to match Bash's rules, we escape a leading {}
+  if (str.substr(0, 2) === '{}') {
+    str = '\\{\\}' + str.substr(2);
+  }
+
+  return expand(escapeBraces(str), true).map(unescapeBraces);
+}
+
+function identity(e) {
+  return e;
+}
+
+function embrace(str) {
+  return '{' + str + '}';
+}
+function isPadded(el) {
+  return /^-?0\d/.test(el);
+}
+
+function lte(i, y) {
+  return i <= y;
+}
+function gte(i, y) {
+  return i >= y;
+}
+
+function expand(str, isTop) {
+  var expansions = [];
+
+  var m = balanced('{', '}', str);
+  if (!m || /\$$/.test(m.pre)) return [str];
+
+  var isNumericSequence = /^-?\d+\.\.-?\d+(?:\.\.-?\d+)?$/.test(m.body);
+  var isAlphaSequence = /^[a-zA-Z]\.\.[a-zA-Z](?:\.\.-?\d+)?$/.test(m.body);
+  var isSequence = isNumericSequence || isAlphaSequence;
+  var isOptions = m.body.indexOf(',') >= 0;
+  if (!isSequence && !isOptions) {
+    // {a},b}
+    if (m.post.match(/,.*\}/)) {
+      str = m.pre + '{' + m.body + escClose + m.post;
+      return expand(str);
+    }
+    return [str];
+  }
+
+  var n;
+  if (isSequence) {
+    n = m.body.split(/\.\./);
+  } else {
+    n = parseCommaParts(m.body);
+    if (n.length === 1) {
+      // x{{a,b}}y ==> x{a}y x{b}y
+      n = expand(n[0], false).map(embrace);
+      if (n.length === 1) {
+        var post = m.post.length
+          ? expand(m.post, false)
+          : [''];
+        return post.map(function(p) {
+          return m.pre + n[0] + p;
+        });
+      }
+    }
+  }
+
+  // at this point, n is the parts, and we know it's not a comma set
+  // with a single entry.
+
+  // no need to expand pre, since it is guaranteed to be free of brace-sets
+  var pre = m.pre;
+  var post = m.post.length
+    ? expand(m.post, false)
+    : [''];
+
+  var N;
+
+  if (isSequence) {
+    var x = numeric(n[0]);
+    var y = numeric(n[1]);
+    var width = Math.max(n[0].length, n[1].length)
+    var incr = n.length == 3
+      ? Math.abs(numeric(n[2]))
+      : 1;
+    var test = lte;
+    var reverse = y < x;
+    if (reverse) {
+      incr *= -1;
+      test = gte;
+    }
+    var pad = n.some(isPadded);
+
+    N = [];
+
+    for (var i = x; test(i, y); i += incr) {
+      var c;
+      if (isAlphaSequence) {
+        c = String.fromCharCode(i);
+        if (c === '\\')
+          c = '';
+      } else {
+        c = String(i);
+        if (pad) {
+          var need = width - c.length;
+          if (need > 0) {
+            var z = new Array(need + 1).join('0');
+            if (i < 0)
+              c = '-' + z + c.slice(1);
+            else
+              c = z + c;
+          }
+        }
+      }
+      N.push(c);
+    }
+  } else {
+    N = concatMap(n, function(el) { return expand(el, false) });
+  }
+
+  for (var j = 0; j < N.length; j++) {
+    for (var k = 0; k < post.length; k++) {
+      var expansion = pre + N[j] + post[k];
+      if (!isTop || isSequence || expansion)
+        expansions.push(expansion);
+    }
+  }
+
+  return expansions;
+}
+
diff --git a/stdlib/nodejs/node_modules/brace-expansion/package.json b/stdlib/nodejs/node_modules/brace-expansion/package.json
new file mode 100644
index 00000000..d8738fae
--- /dev/null
+++ b/stdlib/nodejs/node_modules/brace-expansion/package.json
@@ -0,0 +1,75 @@
+{
+  "_from": "brace-expansion@^1.1.7",
+  "_id": "brace-expansion@1.1.11",
+  "_inBundle": false,
+  "_integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
+  "_location": "/brace-expansion",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "range",
+    "registry": true,
+    "raw": "brace-expansion@^1.1.7",
+    "name": "brace-expansion",
+    "escapedName": "brace-expansion",
+    "rawSpec": "^1.1.7",
+    "saveSpec": null,
+    "fetchSpec": "^1.1.7"
+  },
+  "_requiredBy": [
+    "/minimatch"
+  ],
+  "_resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
+  "_shasum": "3c7fcbf529d87226f3d2f52b966ff5271eb441dd",
+  "_spec": "brace-expansion@^1.1.7",
+  "_where": "/home/guillaume/workspace/opensource/opal/opal/stdlib/nodejs/node_modules/minimatch",
+  "author": {
+    "name": "Julian Gruber",
+    "email": "mail@juliangruber.com",
+    "url": "http://juliangruber.com"
+  },
+  "bugs": {
+    "url": "https://github.com/juliangruber/brace-expansion/issues"
+  },
+  "bundleDependencies": false,
+  "dependencies": {
+    "balanced-match": "^1.0.0",
+    "concat-map": "0.0.1"
+  },
+  "deprecated": false,
+  "description": "Brace expansion as known from sh/bash",
+  "devDependencies": {
+    "matcha": "^0.7.0",
+    "tape": "^4.6.0"
+  },
+  "homepage": "https://github.com/juliangruber/brace-expansion",
+  "keywords": [],
+  "license": "MIT",
+  "main": "index.js",
+  "name": "brace-expansion",
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/juliangruber/brace-expansion.git"
+  },
+  "scripts": {
+    "bench": "matcha test/perf/bench.js",
+    "gentest": "bash test/generate.sh",
+    "test": "tape test/*.js"
+  },
+  "testling": {
+    "files": "test/*.js",
+    "browsers": [
+      "ie/8..latest",
+      "firefox/20..latest",
+      "firefox/nightly",
+      "chrome/25..latest",
+      "chrome/canary",
+      "opera/12..latest",
+      "opera/next",
+      "safari/5.1..latest",
+      "ipad/6.0..latest",
+      "iphone/6.0..latest",
+      "android-browser/4.2..latest"
+    ]
+  },
+  "version": "1.1.11"
+}
diff --git a/stdlib/nodejs/node_modules/concat-map/.travis.yml b/stdlib/nodejs/node_modules/concat-map/.travis.yml
new file mode 100644
index 00000000..f1d0f13c
--- /dev/null
+++ b/stdlib/nodejs/node_modules/concat-map/.travis.yml
@@ -0,0 +1,4 @@
+language: node_js
+node_js:
+  - 0.4
+  - 0.6
diff --git a/stdlib/nodejs/node_modules/concat-map/LICENSE b/stdlib/nodejs/node_modules/concat-map/LICENSE
new file mode 100644
index 00000000..ee27ba4b
--- /dev/null
+++ b/stdlib/nodejs/node_modules/concat-map/LICENSE
@@ -0,0 +1,18 @@
+This software is released under the MIT license:
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/stdlib/nodejs/node_modules/concat-map/README.markdown b/stdlib/nodejs/node_modules/concat-map/README.markdown
new file mode 100644
index 00000000..408f70a1
--- /dev/null
+++ b/stdlib/nodejs/node_modules/concat-map/README.markdown
@@ -0,0 +1,62 @@
+concat-map
+==========
+
+Concatenative mapdashery.
+
+[![browser support](http://ci.testling.com/substack/node-concat-map.png)](http://ci.testling.com/substack/node-concat-map)
+
+[![build status](https://secure.travis-ci.org/substack/node-concat-map.png)](http://travis-ci.org/substack/node-concat-map)
+
+example
+=======
+
+``` js
+var concatMap = require('concat-map');
+var xs = [ 1, 2, 3, 4, 5, 6 ];
+var ys = concatMap(xs, function (x) {
+    return x % 2 ? [ x - 0.1, x, x + 0.1 ] : [];
+});
+console.dir(ys);
+```
+
+***
+
+```
+[ 0.9, 1, 1.1, 2.9, 3, 3.1, 4.9, 5, 5.1 ]
+```
+
+methods
+=======
+
+``` js
+var concatMap = require('concat-map')
+```
+
+concatMap(xs, fn)
+-----------------
+
+Return an array of concatenated elements by calling `fn(x, i)` for each element
+`x` and each index `i` in the array `xs`.
+
+When `fn(x, i)` returns an array, its result will be concatenated with the
+result array. If `fn(x, i)` returns anything else, that value will be pushed
+onto the end of the result array.
+
+install
+=======
+
+With [npm](http://npmjs.org) do:
+
+```
+npm install concat-map
+```
+
+license
+=======
+
+MIT
+
+notes
+=====
+
+This module was written while sitting high above the ground in a tree.
diff --git a/stdlib/nodejs/node_modules/concat-map/example/map.js b/stdlib/nodejs/node_modules/concat-map/example/map.js
new file mode 100644
index 00000000..33656217
--- /dev/null
+++ b/stdlib/nodejs/node_modules/concat-map/example/map.js
@@ -0,0 +1,6 @@
+var concatMap = require('../');
+var xs = [ 1, 2, 3, 4, 5, 6 ];
+var ys = concatMap(xs, function (x) {
+    return x % 2 ? [ x - 0.1, x, x + 0.1 ] : [];
+});
+console.dir(ys);
diff --git a/stdlib/nodejs/node_modules/concat-map/index.js b/stdlib/nodejs/node_modules/concat-map/index.js
new file mode 100644
index 00000000..b29a7812
--- /dev/null
+++ b/stdlib/nodejs/node_modules/concat-map/index.js
@@ -0,0 +1,13 @@
+module.exports = function (xs, fn) {
+    var res = [];
+    for (var i = 0; i < xs.length; i++) {
+        var x = fn(xs[i], i);
+        if (isArray(x)) res.push.apply(res, x);
+        else res.push(x);
+    }
+    return res;
+};
+
+var isArray = Array.isArray || function (xs) {
+    return Object.prototype.toString.call(xs) === '[object Array]';
+};
diff --git a/stdlib/nodejs/node_modules/concat-map/package.json b/stdlib/nodejs/node_modules/concat-map/package.json
new file mode 100644
index 00000000..aaeab7a9
--- /dev/null
+++ b/stdlib/nodejs/node_modules/concat-map/package.json
@@ -0,0 +1,88 @@
+{
+  "_from": "concat-map@0.0.1",
+  "_id": "concat-map@0.0.1",
+  "_inBundle": false,
+  "_integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=",
+  "_location": "/concat-map",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "version",
+    "registry": true,
+    "raw": "concat-map@0.0.1",
+    "name": "concat-map",
+    "escapedName": "concat-map",
+    "rawSpec": "0.0.1",
+    "saveSpec": null,
+    "fetchSpec": "0.0.1"
+  },
+  "_requiredBy": [
+    "/brace-expansion"
+  ],
+  "_resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
+  "_shasum": "d8a96bd77fd68df7793a73036a3ba0d5405d477b",
+  "_spec": "concat-map@0.0.1",
+  "_where": "/home/guillaume/workspace/opensource/opal/opal/stdlib/nodejs/node_modules/brace-expansion",
+  "author": {
+    "name": "James Halliday",
+    "email": "mail@substack.net",
+    "url": "http://substack.net"
+  },
+  "bugs": {
+    "url": "https://github.com/substack/node-concat-map/issues"
+  },
+  "bundleDependencies": false,
+  "deprecated": false,
+  "description": "concatenative mapdashery",
+  "devDependencies": {
+    "tape": "~2.4.0"
+  },
+  "directories": {
+    "example": "example",
+    "test": "test"
+  },
+  "homepage": "https://github.com/substack/node-concat-map#readme",
+  "keywords": [
+    "concat",
+    "concatMap",
+    "map",
+    "functional",
+    "higher-order"
+  ],
+  "license": "MIT",
+  "main": "index.js",
+  "name": "concat-map",
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/substack/node-concat-map.git"
+  },
+  "scripts": {
+    "test": "tape test/*.js"
+  },
+  "testling": {
+    "files": "test/*.js",
+    "browsers": {
+      "ie": [
+        6,
+        7,
+        8,
+        9
+      ],
+      "ff": [
+        3.5,
+        10,
+        15
+      ],
+      "chrome": [
+        10,
+        22
+      ],
+      "safari": [
+        5.1
+      ],
+      "opera": [
+        12
+      ]
+    }
+  },
+  "version": "0.0.1"
+}
diff --git a/stdlib/nodejs/node_modules/concat-map/test/map.js b/stdlib/nodejs/node_modules/concat-map/test/map.js
new file mode 100644
index 00000000..fdbd7022
--- /dev/null
+++ b/stdlib/nodejs/node_modules/concat-map/test/map.js
@@ -0,0 +1,39 @@
+var concatMap = require('../');
+var test = require('tape');
+
+test('empty or not', function (t) {
+    var xs = [ 1, 2, 3, 4, 5, 6 ];
+    var ixes = [];
+    var ys = concatMap(xs, function (x, ix) {
+        ixes.push(ix);
+        return x % 2 ? [ x - 0.1, x, x + 0.1 ] : [];
+    });
+    t.same(ys, [ 0.9, 1, 1.1, 2.9, 3, 3.1, 4.9, 5, 5.1 ]);
+    t.same(ixes, [ 0, 1, 2, 3, 4, 5 ]);
+    t.end();
+});
+
+test('always something', function (t) {
+    var xs = [ 'a', 'b', 'c', 'd' ];
+    var ys = concatMap(xs, function (x) {
+        return x === 'b' ? [ 'B', 'B', 'B' ] : [ x ];
+    });
+    t.same(ys, [ 'a', 'B', 'B', 'B', 'c', 'd' ]);
+    t.end();
+});
+
+test('scalars', function (t) {
+    var xs = [ 'a', 'b', 'c', 'd' ];
+    var ys = concatMap(xs, function (x) {
+        return x === 'b' ? [ 'B', 'B', 'B' ] : x;
+    });
+    t.same(ys, [ 'a', 'B', 'B', 'B', 'c', 'd' ]);
+    t.end();
+});
+
+test('undefs', function (t) {
+    var xs = [ 'a', 'b', 'c', 'd' ];
+    var ys = concatMap(xs, function () {});
+    t.same(ys, [ undefined, undefined, undefined, undefined ]);
+    t.end();
+});
diff --git a/stdlib/nodejs/node_modules/fs.realpath/LICENSE b/stdlib/nodejs/node_modules/fs.realpath/LICENSE
new file mode 100644
index 00000000..5bd884c2
--- /dev/null
+++ b/stdlib/nodejs/node_modules/fs.realpath/LICENSE
@@ -0,0 +1,43 @@
+The ISC License
+
+Copyright (c) Isaac Z. Schlueter and Contributors
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+----
+
+This library bundles a version of the `fs.realpath` and `fs.realpathSync`
+methods from Node.js v0.10 under the terms of the Node.js MIT license.
+
+Node's license follows, also included at the header of `old.js` which contains
+the licensed code:
+
+  Copyright Joyent, Inc. and other Node contributors.
+
+  Permission is hereby granted, free of charge, to any person obtaining a
+  copy of this software and associated documentation files (the "Software"),
+  to deal in the Software without restriction, including without limitation
+  the rights to use, copy, modify, merge, publish, distribute, sublicense,
+  and/or sell copies of the Software, and to permit persons to whom the
+  Software is furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+  DEALINGS IN THE SOFTWARE.
diff --git a/stdlib/nodejs/node_modules/fs.realpath/README.md b/stdlib/nodejs/node_modules/fs.realpath/README.md
new file mode 100644
index 00000000..a42ceac6
--- /dev/null
+++ b/stdlib/nodejs/node_modules/fs.realpath/README.md
@@ -0,0 +1,33 @@
+# fs.realpath
+
+A backwards-compatible fs.realpath for Node v6 and above
+
+In Node v6, the JavaScript implementation of fs.realpath was replaced
+with a faster (but less resilient) native implementation.  That raises
+new and platform-specific errors and cannot handle long or excessively
+symlink-looping paths.
+
+This module handles those cases by detecting the new errors and
+falling back to the JavaScript implementation.  On versions of Node
+prior to v6, it has no effect.
+
+## USAGE
+
+```js
+var rp = require('fs.realpath')
+
+// async version
+rp.realpath(someLongAndLoopingPath, function (er, real) {
+  // the ELOOP was handled, but it was a bit slower
+})
+
+// sync version
+var real = rp.realpathSync(someLongAndLoopingPath)
+
+// monkeypatch at your own risk!
+// This replaces the fs.realpath/fs.realpathSync builtins
+rp.monkeypatch()
+
+// un-do the monkeypatching
+rp.unmonkeypatch()
+```
diff --git a/stdlib/nodejs/node_modules/fs.realpath/index.js b/stdlib/nodejs/node_modules/fs.realpath/index.js
new file mode 100644
index 00000000..b09c7c7e
--- /dev/null
+++ b/stdlib/nodejs/node_modules/fs.realpath/index.js
@@ -0,0 +1,66 @@
+module.exports = realpath
+realpath.realpath = realpath
+realpath.sync = realpathSync
+realpath.realpathSync = realpathSync
+realpath.monkeypatch = monkeypatch
+realpath.unmonkeypatch = unmonkeypatch
+
+var fs = require('fs')
+var origRealpath = fs.realpath
+var origRealpathSync = fs.realpathSync
+
+var version = process.version
+var ok = /^v[0-5]\./.test(version)
+var old = require('./old.js')
+
+function newError (er) {
+  return er && er.syscall === 'realpath' && (
+    er.code === 'ELOOP' ||
+    er.code === 'ENOMEM' ||
+    er.code === 'ENAMETOOLONG'
+  )
+}
+
+function realpath (p, cache, cb) {
+  if (ok) {
+    return origRealpath(p, cache, cb)
+  }
+
+  if (typeof cache === 'function') {
+    cb = cache
+    cache = null
+  }
+  origRealpath(p, cache, function (er, result) {
+    if (newError(er)) {
+      old.realpath(p, cache, cb)
+    } else {
+      cb(er, result)
+    }
+  })
+}
+
+function realpathSync (p, cache) {
+  if (ok) {
+    return origRealpathSync(p, cache)
+  }
+
+  try {
+    return origRealpathSync(p, cache)
+  } catch (er) {
+    if (newError(er)) {
+      return old.realpathSync(p, cache)
+    } else {
+      throw er
+    }
+  }
+}
+
+function monkeypatch () {
+  fs.realpath = realpath
+  fs.realpathSync = realpathSync
+}
+
+function unmonkeypatch () {
+  fs.realpath = origRealpath
+  fs.realpathSync = origRealpathSync
+}
diff --git a/stdlib/nodejs/node_modules/fs.realpath/old.js b/stdlib/nodejs/node_modules/fs.realpath/old.js
new file mode 100644
index 00000000..b40305e7
--- /dev/null
+++ b/stdlib/nodejs/node_modules/fs.realpath/old.js
@@ -0,0 +1,303 @@
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+var pathModule = require('path');
+var isWindows = process.platform === 'win32';
+var fs = require('fs');
+
+// JavaScript implementation of realpath, ported from node pre-v6
+
+var DEBUG = process.env.NODE_DEBUG && /fs/.test(process.env.NODE_DEBUG);
+
+function rethrow() {
+  // Only enable in debug mode. A backtrace uses ~1000 bytes of heap space and
+  // is fairly slow to generate.
+  var callback;
+  if (DEBUG) {
+    var backtrace = new Error;
+    callback = debugCallback;
+  } else
+    callback = missingCallback;
+
+  return callback;
+
+  function debugCallback(err) {
+    if (err) {
+      backtrace.message = err.message;
+      err = backtrace;
+      missingCallback(err);
+    }
+  }
+
+  function missingCallback(err) {
+    if (err) {
+      if (process.throwDeprecation)
+        throw err;  // Forgot a callback but don't know where? Use NODE_DEBUG=fs
+      else if (!process.noDeprecation) {
+        var msg = 'fs: missing callback ' + (err.stack || err.message);
+        if (process.traceDeprecation)
+          console.trace(msg);
+        else
+          console.error(msg);
+      }
+    }
+  }
+}
+
+function maybeCallback(cb) {
+  return typeof cb === 'function' ? cb : rethrow();
+}
+
+var normalize = pathModule.normalize;
+
+// Regexp that finds the next partion of a (partial) path
+// result is [base_with_slash, base], e.g. ['somedir/', 'somedir']
+if (isWindows) {
+  var nextPartRe = /(.*?)(?:[\/\\]+|$)/g;
+} else {
+  var nextPartRe = /(.*?)(?:[\/]+|$)/g;
+}
+
+// Regex to find the device root, including trailing slash. E.g. 'c:\\'.
+if (isWindows) {
+  var splitRootRe = /^(?:[a-zA-Z]:|[\\\/]{2}[^\\\/]+[\\\/][^\\\/]+)?[\\\/]*/;
+} else {
+  var splitRootRe = /^[\/]*/;
+}
+
+exports.realpathSync = function realpathSync(p, cache) {
+  // make p is absolute
+  p = pathModule.resolve(p);
+
+  if (cache && Object.prototype.hasOwnProperty.call(cache, p)) {
+    return cache[p];
+  }
+
+  var original = p,
+      seenLinks = {},
+      knownHard = {};
+
+  // current character position in p
+  var pos;
+  // the partial path so far, including a trailing slash if any
+  var current;
+  // the partial path without a trailing slash (except when pointing at a root)
+  var base;
+  // the partial path scanned in the previous round, with slash
+  var previous;
+
+  start();
+
+  function start() {
+    // Skip over roots
+    var m = splitRootRe.exec(p);
+    pos = m[0].length;
+    current = m[0];
+    base = m[0];
+    previous = '';
+
+    // On windows, check that the root exists. On unix there is no need.
+    if (isWindows && !knownHard[base]) {
+      fs.lstatSync(base);
+      knownHard[base] = true;
+    }
+  }
+
+  // walk down the path, swapping out linked pathparts for their real
+  // values
+  // NB: p.length changes.
+  while (pos < p.length) {
+    // find the next part
+    nextPartRe.lastIndex = pos;
+    var result = nextPartRe.exec(p);
+    previous = current;
+    current += result[0];
+    base = previous + result[1];
+    pos = nextPartRe.lastIndex;
+
+    // continue if not a symlink
+    if (knownHard[base] || (cache && cache[base] === base)) {
+      continue;
+    }
+
+    var resolvedLink;
+    if (cache && Object.prototype.hasOwnProperty.call(cache, base)) {
+      // some known symbolic link.  no need to stat again.
+      resolvedLink = cache[base];
+    } else {
+      var stat = fs.lstatSync(base);
+      if (!stat.isSymbolicLink()) {
+        knownHard[base] = true;
+        if (cache) cache[base] = base;
+        continue;
+      }
+
+      // read the link if it wasn't read before
+      // dev/ino always return 0 on windows, so skip the check.
+      var linkTarget = null;
+      if (!isWindows) {
+        var id = stat.dev.toString(32) + ':' + stat.ino.toString(32);
+        if (seenLinks.hasOwnProperty(id)) {
+          linkTarget = seenLinks[id];
+        }
+      }
+      if (linkTarget === null) {
+        fs.statSync(base);
+        linkTarget = fs.readlinkSync(base);
+      }
+      resolvedLink = pathModule.resolve(previous, linkTarget);
+      // track this, if given a cache.
+      if (cache) cache[base] = resolvedLink;
+      if (!isWindows) seenLinks[id] = linkTarget;
+    }
+
+    // resolve the link, then start over
+    p = pathModule.resolve(resolvedLink, p.slice(pos));
+    start();
+  }
+
+  if (cache) cache[original] = p;
+
+  return p;
+};
+
+
+exports.realpath = function realpath(p, cache, cb) {
+  if (typeof cb !== 'function') {
+    cb = maybeCallback(cache);
+    cache = null;
+  }
+
+  // make p is absolute
+  p = pathModule.resolve(p);
+
+  if (cache && Object.prototype.hasOwnProperty.call(cache, p)) {
+    return process.nextTick(cb.bind(null, null, cache[p]));
+  }
+
+  var original = p,
+      seenLinks = {},
+      knownHard = {};
+
+  // current character position in p
+  var pos;
+  // the partial path so far, including a trailing slash if any
+  var current;
+  // the partial path without a trailing slash (except when pointing at a root)
+  var base;
+  // the partial path scanned in the previous round, with slash
+  var previous;
+
+  start();
+
+  function start() {
+    // Skip over roots
+    var m = splitRootRe.exec(p);
+    pos = m[0].length;
+    current = m[0];
+    base = m[0];
+    previous = '';
+
+    // On windows, check that the root exists. On unix there is no need.
+    if (isWindows && !knownHard[base]) {
+      fs.lstat(base, function(err) {
+        if (err) return cb(err);
+        knownHard[base] = true;
+        LOOP();
+      });
+    } else {
+      process.nextTick(LOOP);
+    }
+  }
+
+  // walk down the path, swapping out linked pathparts for their real
+  // values
+  function LOOP() {
+    // stop if scanned past end of path
+    if (pos >= p.length) {
+      if (cache) cache[original] = p;
+      return cb(null, p);
+    }
+
+    // find the next part
+    nextPartRe.lastIndex = pos;
+    var result = nextPartRe.exec(p);
+    previous = current;
+    current += result[0];
+    base = previous + result[1];
+    pos = nextPartRe.lastIndex;
+
+    // continue if not a symlink
+    if (knownHard[base] || (cache && cache[base] === base)) {
+      return process.nextTick(LOOP);
+    }
+
+    if (cache && Object.prototype.hasOwnProperty.call(cache, base)) {
+      // known symbolic link.  no need to stat again.
+      return gotResolvedLink(cache[base]);
+    }
+
+    return fs.lstat(base, gotStat);
+  }
+
+  function gotStat(err, stat) {
+    if (err) return cb(err);
+
+    // if not a symlink, skip to the next path part
+    if (!stat.isSymbolicLink()) {
+      knownHard[base] = true;
+      if (cache) cache[base] = base;
+      return process.nextTick(LOOP);
+    }
+
+    // stat & read the link if not read before
+    // call gotTarget as soon as the link target is known
+    // dev/ino always return 0 on windows, so skip the check.
+    if (!isWindows) {
+      var id = stat.dev.toString(32) + ':' + stat.ino.toString(32);
+      if (seenLinks.hasOwnProperty(id)) {
+        return gotTarget(null, seenLinks[id], base);
+      }
+    }
+    fs.stat(base, function(err) {
+      if (err) return cb(err);
+
+      fs.readlink(base, function(err, target) {
+        if (!isWindows) seenLinks[id] = target;
+        gotTarget(err, target);
+      });
+    });
+  }
+
+  function gotTarget(err, target, base) {
+    if (err) return cb(err);
+
+    var resolvedLink = pathModule.resolve(previous, target);
+    if (cache) cache[base] = resolvedLink;
+    gotResolvedLink(resolvedLink);
+  }
+
+  function gotResolvedLink(resolvedLink) {
+    // resolve the link, then start over
+    p = pathModule.resolve(resolvedLink, p.slice(pos));
+    start();
+  }
+};
diff --git a/stdlib/nodejs/node_modules/fs.realpath/package.json b/stdlib/nodejs/node_modules/fs.realpath/package.json
new file mode 100644
index 00000000..343401d0
--- /dev/null
+++ b/stdlib/nodejs/node_modules/fs.realpath/package.json
@@ -0,0 +1,59 @@
+{
+  "_from": "fs.realpath@^1.0.0",
+  "_id": "fs.realpath@1.0.0",
+  "_inBundle": false,
+  "_integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8=",
+  "_location": "/fs.realpath",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "range",
+    "registry": true,
+    "raw": "fs.realpath@^1.0.0",
+    "name": "fs.realpath",
+    "escapedName": "fs.realpath",
+    "rawSpec": "^1.0.0",
+    "saveSpec": null,
+    "fetchSpec": "^1.0.0"
+  },
+  "_requiredBy": [
+    "/glob"
+  ],
+  "_resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
+  "_shasum": "1504ad2523158caa40db4a2787cb01411994ea4f",
+  "_spec": "fs.realpath@^1.0.0",
+  "_where": "/home/guillaume/workspace/opensource/opal/opal/stdlib/nodejs/node_modules/glob",
+  "author": {
+    "name": "Isaac Z. Schlueter",
+    "email": "i@izs.me",
+    "url": "http://blog.izs.me/"
+  },
+  "bugs": {
+    "url": "https://github.com/isaacs/fs.realpath/issues"
+  },
+  "bundleDependencies": false,
+  "dependencies": {},
+  "deprecated": false,
+  "description": "Use node's fs.realpath, but fall back to the JS implementation if the native one fails",
+  "devDependencies": {},
+  "files": [
+    "old.js",
+    "index.js"
+  ],
+  "homepage": "https://github.com/isaacs/fs.realpath#readme",
+  "keywords": [
+    "realpath",
+    "fs",
+    "polyfill"
+  ],
+  "license": "ISC",
+  "main": "index.js",
+  "name": "fs.realpath",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/isaacs/fs.realpath.git"
+  },
+  "scripts": {
+    "test": "tap test/*.js --cov"
+  },
+  "version": "1.0.0"
+}
diff --git a/stdlib/nodejs/node_modules/glob/LICENSE b/stdlib/nodejs/node_modules/glob/LICENSE
new file mode 100644
index 00000000..19129e31
--- /dev/null
+++ b/stdlib/nodejs/node_modules/glob/LICENSE
@@ -0,0 +1,15 @@
+The ISC License
+
+Copyright (c) Isaac Z. Schlueter and Contributors
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
diff --git a/stdlib/nodejs/node_modules/glob/README.md b/stdlib/nodejs/node_modules/glob/README.md
new file mode 100644
index 00000000..baa1d1ba
--- /dev/null
+++ b/stdlib/nodejs/node_modules/glob/README.md
@@ -0,0 +1,368 @@
+# Glob
+
+Match files using the patterns the shell uses, like stars and stuff.
+
+[![Build Status](https://travis-ci.org/isaacs/node-glob.svg?branch=master)](https://travis-ci.org/isaacs/node-glob/) [![Build Status](https://ci.appveyor.com/api/projects/status/kd7f3yftf7unxlsx?svg=true)](https://ci.appveyor.com/project/isaacs/node-glob) [![Coverage Status](https://coveralls.io/repos/isaacs/node-glob/badge.svg?branch=master&service=github)](https://coveralls.io/github/isaacs/node-glob?branch=master)
+
+This is a glob implementation in JavaScript.  It uses the `minimatch`
+library to do its matching.
+
+![](oh-my-glob.gif)
+
+## Usage
+
+Install with npm
+
+```
+npm i glob
+```
+
+```javascript
+var glob = require("glob")
+
+// options is optional
+glob("**/*.js", options, function (er, files) {
+  // files is an array of filenames.
+  // If the `nonull` option is set, and nothing
+  // was found, then files is ["**/*.js"]
+  // er is an error object or null.
+})
+```
+
+## Glob Primer
+
+"Globs" are the patterns you type when you do stuff like `ls *.js` on
+the command line, or put `build/*` in a `.gitignore` file.
+
+Before parsing the path part patterns, braced sections are expanded
+into a set.  Braced sections start with `{` and end with `}`, with any
+number of comma-delimited sections within.  Braced sections may contain
+slash characters, so `a{/b/c,bcd}` would expand into `a/b/c` and `abcd`.
+
+The following characters have special magic meaning when used in a
+path portion:
+
+* `*` Matches 0 or more characters in a single path portion
+* `?` Matches 1 character
+* `[...]` Matches a range of characters, similar to a RegExp range.
+  If the first character of the range is `!` or `^` then it matches
+  any character not in the range.
+* `!(pattern|pattern|pattern)` Matches anything that does not match
+  any of the patterns provided.
+* `?(pattern|pattern|pattern)` Matches zero or one occurrence of the
+  patterns provided.
+* `+(pattern|pattern|pattern)` Matches one or more occurrences of the
+  patterns provided.
+* `*(a|b|c)` Matches zero or more occurrences of the patterns provided
+* `@(pattern|pat*|pat?erN)` Matches exactly one of the patterns
+  provided
+* `**` If a "globstar" is alone in a path portion, then it matches
+  zero or more directories and subdirectories searching for matches.
+  It does not crawl symlinked directories.
+
+### Dots
+
+If a file or directory path portion has a `.` as the first character,
+then it will not match any glob pattern unless that pattern's
+corresponding path part also has a `.` as its first character.
+
+For example, the pattern `a/.*/c` would match the file at `a/.b/c`.
+However the pattern `a/*/c` would not, because `*` does not start with
+a dot character.
+
+You can make glob treat dots as normal characters by setting
+`dot:true` in the options.
+
+### Basename Matching
+
+If you set `matchBase:true` in the options, and the pattern has no
+slashes in it, then it will seek for any file anywhere in the tree
+with a matching basename.  For example, `*.js` would match
+`test/simple/basic.js`.
+
+### Empty Sets
+
+If no matching files are found, then an empty array is returned.  This
+differs from the shell, where the pattern itself is returned.  For
+example:
+
+    $ echo a*s*d*f
+    a*s*d*f
+
+To get the bash-style behavior, set the `nonull:true` in the options.
+
+### See Also:
+
+* `man sh`
+* `man bash` (Search for "Pattern Matching")
+* `man 3 fnmatch`
+* `man 5 gitignore`
+* [minimatch documentation](https://github.com/isaacs/minimatch)
+
+## glob.hasMagic(pattern, [options])
+
+Returns `true` if there are any special characters in the pattern, and
+`false` otherwise.
+
+Note that the options affect the results.  If `noext:true` is set in
+the options object, then `+(a|b)` will not be considered a magic
+pattern.  If the pattern has a brace expansion, like `a/{b/c,x/y}`
+then that is considered magical, unless `nobrace:true` is set in the
+options.
+
+## glob(pattern, [options], cb)
+
+* `pattern` `{String}` Pattern to be matched
+* `options` `{Object}`
+* `cb` `{Function}`
+  * `err` `{Error | null}`
+  * `matches` `{Array<String>}` filenames found matching the pattern
+
+Perform an asynchronous glob search.
+
+## glob.sync(pattern, [options])
+
+* `pattern` `{String}` Pattern to be matched
+* `options` `{Object}`
+* return: `{Array<String>}` filenames found matching the pattern
+
+Perform a synchronous glob search.
+
+## Class: glob.Glob
+
+Create a Glob object by instantiating the `glob.Glob` class.
+
+```javascript
+var Glob = require("glob").Glob
+var mg = new Glob(pattern, options, cb)
+```
+
+It's an EventEmitter, and starts walking the filesystem to find matches
+immediately.
+
+### new glob.Glob(pattern, [options], [cb])
+
+* `pattern` `{String}` pattern to search for
+* `options` `{Object}`
+* `cb` `{Function}` Called when an error occurs, or matches are found
+  * `err` `{Error | null}`
+  * `matches` `{Array<String>}` filenames found matching the pattern
+
+Note that if the `sync` flag is set in the options, then matches will
+be immediately available on the `g.found` member.
+
+### Properties
+
+* `minimatch` The minimatch object that the glob uses.
+* `options` The options object passed in.
+* `aborted` Boolean which is set to true when calling `abort()`.  There
+  is no way at this time to continue a glob search after aborting, but
+  you can re-use the statCache to avoid having to duplicate syscalls.
+* `cache` Convenience object.  Each field has the following possible
+  values:
+  * `false` - Path does not exist
+  * `true` - Path exists
+  * `'FILE'` - Path exists, and is not a directory
+  * `'DIR'` - Path exists, and is a directory
+  * `[file, entries, ...]` - Path exists, is a directory, and the
+    array value is the results of `fs.readdir`
+* `statCache` Cache of `fs.stat` results, to prevent statting the same
+  path multiple times.
+* `symlinks` A record of which paths are symbolic links, which is
+  relevant in resolving `**` patterns.
+* `realpathCache` An optional object which is passed to `fs.realpath`
+  to minimize unnecessary syscalls.  It is stored on the instantiated
+  Glob object, and may be re-used.
+
+### Events
+
+* `end` When the matching is finished, this is emitted with all the
+  matches found.  If the `nonull` option is set, and no match was found,
+  then the `matches` list contains the original pattern.  The matches
+  are sorted, unless the `nosort` flag is set.
+* `match` Every time a match is found, this is emitted with the specific
+  thing that matched. It is not deduplicated or resolved to a realpath.
+* `error` Emitted when an unexpected error is encountered, or whenever
+  any fs error occurs if `options.strict` is set.
+* `abort` When `abort()` is called, this event is raised.
+
+### Methods
+
+* `pause` Temporarily stop the search
+* `resume` Resume the search
+* `abort` Stop the search forever
+
+### Options
+
+All the options that can be passed to Minimatch can also be passed to
+Glob to change pattern matching behavior.  Also, some have been added,
+or have glob-specific ramifications.
+
+All options are false by default, unless otherwise noted.
+
+All options are added to the Glob object, as well.
+
+If you are running many `glob` operations, you can pass a Glob object
+as the `options` argument to a subsequent operation to shortcut some
+`stat` and `readdir` calls.  At the very least, you may pass in shared
+`symlinks`, `statCache`, `realpathCache`, and `cache` options, so that
+parallel glob operations will be sped up by sharing information about
+the filesystem.
+
+* `cwd` The current working directory in which to search.  Defaults
+  to `process.cwd()`.
+* `root` The place where patterns starting with `/` will be mounted
+  onto.  Defaults to `path.resolve(options.cwd, "/")` (`/` on Unix
+  systems, and `C:\` or some such on Windows.)
+* `dot` Include `.dot` files in normal matches and `globstar` matches.
+  Note that an explicit dot in a portion of the pattern will always
+  match dot files.
+* `nomount` By default, a pattern starting with a forward-slash will be
+  "mounted" onto the root setting, so that a valid filesystem path is
+  returned.  Set this flag to disable that behavior.
+* `mark` Add a `/` character to directory matches.  Note that this
+  requires additional stat calls.
+* `nosort` Don't sort the results.
+* `stat` Set to true to stat *all* results.  This reduces performance
+  somewhat, and is completely unnecessary, unless `readdir` is presumed
+  to be an untrustworthy indicator of file existence.
+* `silent` When an unusual error is encountered when attempting to
+  read a directory, a warning will be printed to stderr.  Set the
+  `silent` option to true to suppress these warnings.
+* `strict` When an unusual error is encountered when attempting to
+  read a directory, the process will just continue on in search of
+  other matches.  Set the `strict` option to raise an error in these
+  cases.
+* `cache` See `cache` property above.  Pass in a previously generated
+  cache object to save some fs calls.
+* `statCache` A cache of results of filesystem information, to prevent
+  unnecessary stat calls.  While it should not normally be necessary
+  to set this, you may pass the statCache from one glob() call to the
+  options object of another, if you know that the filesystem will not
+  change between calls.  (See "Race Conditions" below.)
+* `symlinks` A cache of known symbolic links.  You may pass in a
+  previously generated `symlinks` object to save `lstat` calls when
+  resolving `**` matches.
+* `sync` DEPRECATED: use `glob.sync(pattern, opts)` instead.
+* `nounique` In some cases, brace-expanded patterns can result in the
+  same file showing up multiple times in the result set.  By default,
+  this implementation prevents duplicates in the result set.  Set this
+  flag to disable that behavior.
+* `nonull` Set to never return an empty set, instead returning a set
+  containing the pattern itself.  This is the default in glob(3).
+* `debug` Set to enable debug logging in minimatch and glob.
+* `nobrace` Do not expand `{a,b}` and `{1..3}` brace sets.
+* `noglobstar` Do not match `**` against multiple filenames.  (Ie,
+  treat it as a normal `*` instead.)
+* `noext` Do not match `+(a|b)` "extglob" patterns.
+* `nocase` Perform a case-insensitive match.  Note: on
+  case-insensitive filesystems, non-magic patterns will match by
+  default, since `stat` and `readdir` will not raise errors.
+* `matchBase` Perform a basename-only match if the pattern does not
+  contain any slash characters.  That is, `*.js` would be treated as
+  equivalent to `**/*.js`, matching all js files in all directories.
+* `nodir` Do not match directories, only files.  (Note: to match
+  *only* directories, simply put a `/` at the end of the pattern.)
+* `ignore` Add a pattern or an array of glob patterns to exclude matches.
+  Note: `ignore` patterns are *always* in `dot:true` mode, regardless
+  of any other settings.
+* `follow` Follow symlinked directories when expanding `**` patterns.
+  Note that this can result in a lot of duplicate references in the
+  presence of cyclic links.
+* `realpath` Set to true to call `fs.realpath` on all of the results.
+  In the case of a symlink that cannot be resolved, the full absolute
+  path to the matched entry is returned (though it will usually be a
+  broken symlink)
+* `absolute` Set to true to always receive absolute paths for matched
+  files.  Unlike `realpath`, this also affects the values returned in
+  the `match` event.
+
+## Comparisons to other fnmatch/glob implementations
+
+While strict compliance with the existing standards is a worthwhile
+goal, some discrepancies exist between node-glob and other
+implementations, and are intentional.
+
+The double-star character `**` is supported by default, unless the
+`noglobstar` flag is set.  This is supported in the manner of bsdglob
+and bash 4.3, where `**` only has special significance if it is the only
+thing in a path part.  That is, `a/**/b` will match `a/x/y/b`, but
+`a/**b` will not.
+
+Note that symlinked directories are not crawled as part of a `**`,
+though their contents may match against subsequent portions of the
+pattern.  This prevents infinite loops and duplicates and the like.
+
+If an escaped pattern has no matches, and the `nonull` flag is set,
+then glob returns the pattern as-provided, rather than
+interpreting the character escapes.  For example,
+`glob.match([], "\\*a\\?")` will return `"\\*a\\?"` rather than
+`"*a?"`.  This is akin to setting the `nullglob` option in bash, except
+that it does not resolve escaped pattern characters.
+
+If brace expansion is not disabled, then it is performed before any
+other interpretation of the glob pattern.  Thus, a pattern like
+`+(a|{b),c)}`, which would not be valid in bash or zsh, is expanded
+**first** into the set of `+(a|b)` and `+(a|c)`, and those patterns are
+checked for validity.  Since those two are valid, matching proceeds.
+
+### Comments and Negation
+
+Previously, this module let you mark a pattern as a "comment" if it
+started with a `#` character, or a "negated" pattern if it started
+with a `!` character.
+
+These options were deprecated in version 5, and removed in version 6.
+
+To specify things that should not match, use the `ignore` option.
+
+## Windows
+
+**Please only use forward-slashes in glob expressions.**
+
+Though windows uses either `/` or `\` as its path separator, only `/`
+characters are used by this glob implementation.  You must use
+forward-slashes **only** in glob expressions.  Back-slashes will always
+be interpreted as escape characters, not path separators.
+
+Results from absolute patterns such as `/foo/*` are mounted onto the
+root setting using `path.join`.  On windows, this will by default result
+in `/foo/*` matching `C:\foo\bar.txt`.
+
+## Race Conditions
+
+Glob searching, by its very nature, is susceptible to race conditions,
+since it relies on directory walking and such.
+
+As a result, it is possible that a file that exists when glob looks for
+it may have been deleted or modified by the time it returns the result.
+
+As part of its internal implementation, this program caches all stat
+and readdir calls that it makes, in order to cut down on system
+overhead.  However, this also makes it even more susceptible to races,
+especially if the cache or statCache objects are reused between glob
+calls.
+
+Users are thus advised not to use a glob result as a guarantee of
+filesystem state in the face of rapid changes.  For the vast majority
+of operations, this is never a problem.
+
+## Contributing
+
+Any change to behavior (including bugfixes) must come with a test.
+
+Patches that fail tests or reduce performance will be rejected.
+
+```
+# to run tests
+npm test
+
+# to re-generate test fixtures
+npm run test-regen
+
+# to benchmark against bash/zsh
+npm run bench
+
+# to profile javascript
+npm run prof
+```
diff --git a/stdlib/nodejs/node_modules/glob/changelog.md b/stdlib/nodejs/node_modules/glob/changelog.md
new file mode 100644
index 00000000..41636771
--- /dev/null
+++ b/stdlib/nodejs/node_modules/glob/changelog.md
@@ -0,0 +1,67 @@
+## 7.0
+
+- Raise error if `options.cwd` is specified, and not a directory
+
+## 6.0
+
+- Remove comment and negation pattern support
+- Ignore patterns are always in `dot:true` mode
+
+## 5.0
+
+- Deprecate comment and negation patterns
+- Fix regression in `mark` and `nodir` options from making all cache
+  keys absolute path.
+- Abort if `fs.readdir` returns an error that's unexpected
+- Don't emit `match` events for ignored items
+- Treat ENOTSUP like ENOTDIR in readdir
+
+## 4.5
+
+- Add `options.follow` to always follow directory symlinks in globstar
+- Add `options.realpath` to call `fs.realpath` on all results
+- Always cache based on absolute path
+
+## 4.4
+
+- Add `options.ignore`
+- Fix handling of broken symlinks
+
+## 4.3
+
+- Bump minimatch to 2.x
+- Pass all tests on Windows
+
+## 4.2
+
+- Add `glob.hasMagic` function
+- Add `options.nodir` flag
+
+## 4.1
+
+- Refactor sync and async implementations for performance
+- Throw if callback provided to sync glob function
+- Treat symbolic links in globstar results the same as Bash 4.3
+
+## 4.0
+
+- Use `^` for dependency versions (bumped major because this breaks
+  older npm versions)
+- Ensure callbacks are only ever called once
+- switch to ISC license
+
+## 3.x
+
+- Rewrite in JavaScript
+- Add support for setting root, cwd, and windows support
+- Cache many fs calls
+- Add globstar support
+- emit match events
+
+## 2.x
+
+- Use `glob.h` and `fnmatch.h` from NetBSD
+
+## 1.x
+
+- `glob.h` static binding.
diff --git a/stdlib/nodejs/node_modules/glob/common.js b/stdlib/nodejs/node_modules/glob/common.js
new file mode 100644
index 00000000..66651bb3
--- /dev/null
+++ b/stdlib/nodejs/node_modules/glob/common.js
@@ -0,0 +1,240 @@
+exports.alphasort = alphasort
+exports.alphasorti = alphasorti
+exports.setopts = setopts
+exports.ownProp = ownProp
+exports.makeAbs = makeAbs
+exports.finish = finish
+exports.mark = mark
+exports.isIgnored = isIgnored
+exports.childrenIgnored = childrenIgnored
+
+function ownProp (obj, field) {
+  return Object.prototype.hasOwnProperty.call(obj, field)
+}
+
+var path = require("path")
+var minimatch = require("minimatch")
+var isAbsolute = require("path-is-absolute")
+var Minimatch = minimatch.Minimatch
+
+function alphasorti (a, b) {
+  return a.toLowerCase().localeCompare(b.toLowerCase())
+}
+
+function alphasort (a, b) {
+  return a.localeCompare(b)
+}
+
+function setupIgnores (self, options) {
+  self.ignore = options.ignore || []
+
+  if (!Array.isArray(self.ignore))
+    self.ignore = [self.ignore]
+
+  if (self.ignore.length) {
+    self.ignore = self.ignore.map(ignoreMap)
+  }
+}
+
+// ignore patterns are always in dot:true mode.
+function ignoreMap (pattern) {
+  var gmatcher = null
+  if (pattern.slice(-3) === '/**') {
+    var gpattern = pattern.replace(/(\/\*\*)+$/, '')
+    gmatcher = new Minimatch(gpattern, { dot: true })
+  }
+
+  return {
+    matcher: new Minimatch(pattern, { dot: true }),
+    gmatcher: gmatcher
+  }
+}
+
+function setopts (self, pattern, options) {
+  if (!options)
+    options = {}
+
+  // base-matching: just use globstar for that.
+  if (options.matchBase && -1 === pattern.indexOf("/")) {
+    if (options.noglobstar) {
+      throw new Error("base matching requires globstar")
+    }
+    pattern = "**/" + pattern
+  }
+
+  self.silent = !!options.silent
+  self.pattern = pattern
+  self.strict = options.strict !== false
+  self.realpath = !!options.realpath
+  self.realpathCache = options.realpathCache || Object.create(null)
+  self.follow = !!options.follow
+  self.dot = !!options.dot
+  self.mark = !!options.mark
+  self.nodir = !!options.nodir
+  if (self.nodir)
+    self.mark = true
+  self.sync = !!options.sync
+  self.nounique = !!options.nounique
+  self.nonull = !!options.nonull
+  self.nosort = !!options.nosort
+  self.nocase = !!options.nocase
+  self.stat = !!options.stat
+  self.noprocess = !!options.noprocess
+  self.absolute = !!options.absolute
+
+  self.maxLength = options.maxLength || Infinity
+  self.cache = options.cache || Object.create(null)
+  self.statCache = options.statCache || Object.create(null)
+  self.symlinks = options.symlinks || Object.create(null)
+
+  setupIgnores(self, options)
+
+  self.changedCwd = false
+  var cwd = process.cwd()
+  if (!ownProp(options, "cwd"))
+    self.cwd = cwd
+  else {
+    self.cwd = path.resolve(options.cwd)
+    self.changedCwd = self.cwd !== cwd
+  }
+
+  self.root = options.root || path.resolve(self.cwd, "/")
+  self.root = path.resolve(self.root)
+  if (process.platform === "win32")
+    self.root = self.root.replace(/\\/g, "/")
+
+  // TODO: is an absolute `cwd` supposed to be resolved against `root`?
+  // e.g. { cwd: '/test', root: __dirname } === path.join(__dirname, '/test')
+  self.cwdAbs = isAbsolute(self.cwd) ? self.cwd : makeAbs(self, self.cwd)
+  if (process.platform === "win32")
+    self.cwdAbs = self.cwdAbs.replace(/\\/g, "/")
+  self.nomount = !!options.nomount
+
+  // disable comments and negation in Minimatch.
+  // Note that they are not supported in Glob itself anyway.
+  options.nonegate = true
+  options.nocomment = true
+
+  self.minimatch = new Minimatch(pattern, options)
+  self.options = self.minimatch.options
+}
+
+function finish (self) {
+  var nou = self.nounique
+  var all = nou ? [] : Object.create(null)
+
+  for (var i = 0, l = self.matches.length; i < l; i ++) {
+    var matches = self.matches[i]
+    if (!matches || Object.keys(matches).length === 0) {
+      if (self.nonull) {
+        // do like the shell, and spit out the literal glob
+        var literal = self.minimatch.globSet[i]
+        if (nou)
+          all.push(literal)
+        else
+          all[literal] = true
+      }
+    } else {
+      // had matches
+      var m = Object.keys(matches)
+      if (nou)
+        all.push.apply(all, m)
+      else
+        m.forEach(function (m) {
+          all[m] = true
+        })
+    }
+  }
+
+  if (!nou)
+    all = Object.keys(all)
+
+  if (!self.nosort)
+    all = all.sort(self.nocase ? alphasorti : alphasort)
+
+  // at *some* point we statted all of these
+  if (self.mark) {
+    for (var i = 0; i < all.length; i++) {
+      all[i] = self._mark(all[i])
+    }
+    if (self.nodir) {
+      all = all.filter(function (e) {
+        var notDir = !(/\/$/.test(e))
+        var c = self.cache[e] || self.cache[makeAbs(self, e)]
+        if (notDir && c)
+          notDir = c !== 'DIR' && !Array.isArray(c)
+        return notDir
+      })
+    }
+  }
+
+  if (self.ignore.length)
+    all = all.filter(function(m) {
+      return !isIgnored(self, m)
+    })
+
+  self.found = all
+}
+
+function mark (self, p) {
+  var abs = makeAbs(self, p)
+  var c = self.cache[abs]
+  var m = p
+  if (c) {
+    var isDir = c === 'DIR' || Array.isArray(c)
+    var slash = p.slice(-1) === '/'
+
+    if (isDir && !slash)
+      m += '/'
+    else if (!isDir && slash)
+      m = m.slice(0, -1)
+
+    if (m !== p) {
+      var mabs = makeAbs(self, m)
+      self.statCache[mabs] = self.statCache[abs]
+      self.cache[mabs] = self.cache[abs]
+    }
+  }
+
+  return m
+}
+
+// lotta situps...
+function makeAbs (self, f) {
+  var abs = f
+  if (f.charAt(0) === '/') {
+    abs = path.join(self.root, f)
+  } else if (isAbsolute(f) || f === '') {
+    abs = f
+  } else if (self.changedCwd) {
+    abs = path.resolve(self.cwd, f)
+  } else {
+    abs = path.resolve(f)
+  }
+
+  if (process.platform === 'win32')
+    abs = abs.replace(/\\/g, '/')
+
+  return abs
+}
+
+
+// Return true, if pattern ends with globstar '**', for the accompanying parent directory.
+// Ex:- If node_modules/** is the pattern, add 'node_modules' to ignore list along with it's contents
+function isIgnored (self, path) {
+  if (!self.ignore.length)
+    return false
+
+  return self.ignore.some(function(item) {
+    return item.matcher.match(path) || !!(item.gmatcher && item.gmatcher.match(path))
+  })
+}
+
+function childrenIgnored (self, path) {
+  if (!self.ignore.length)
+    return false
+
+  return self.ignore.some(function(item) {
+    return !!(item.gmatcher && item.gmatcher.match(path))
+  })
+}
diff --git a/stdlib/nodejs/node_modules/glob/glob.js b/stdlib/nodejs/node_modules/glob/glob.js
new file mode 100644
index 00000000..58dec0f6
--- /dev/null
+++ b/stdlib/nodejs/node_modules/glob/glob.js
@@ -0,0 +1,790 @@
+// Approach:
+//
+// 1. Get the minimatch set
+// 2. For each pattern in the set, PROCESS(pattern, false)
+// 3. Store matches per-set, then uniq them
+//
+// PROCESS(pattern, inGlobStar)
+// Get the first [n] items from pattern that are all strings
+// Join these together.  This is PREFIX.
+//   If there is no more remaining, then stat(PREFIX) and
+//   add to matches if it succeeds.  END.
+//
+// If inGlobStar and PREFIX is symlink and points to dir
+//   set ENTRIES = []
+// else readdir(PREFIX) as ENTRIES
+//   If fail, END
+//
+// with ENTRIES
+//   If pattern[n] is GLOBSTAR
+//     // handle the case where the globstar match is empty
+//     // by pruning it out, and testing the resulting pattern
+//     PROCESS(pattern[0..n] + pattern[n+1 .. $], false)
+//     // handle other cases.
+//     for ENTRY in ENTRIES (not dotfiles)
+//       // attach globstar + tail onto the entry
+//       // Mark that this entry is a globstar match
+//       PROCESS(pattern[0..n] + ENTRY + pattern[n .. $], true)
+//
+//   else // not globstar
+//     for ENTRY in ENTRIES (not dotfiles, unless pattern[n] is dot)
+//       Test ENTRY against pattern[n]
+//       If fails, continue
+//       If passes, PROCESS(pattern[0..n] + item + pattern[n+1 .. $])
+//
+// Caveat:
+//   Cache all stats and readdirs results to minimize syscall.  Since all
+//   we ever care about is existence and directory-ness, we can just keep
+//   `true` for files, and [children,...] for directories, or `false` for
+//   things that don't exist.
+
+module.exports = glob
+
+var fs = require('fs')
+var rp = require('fs.realpath')
+var minimatch = require('minimatch')
+var Minimatch = minimatch.Minimatch
+var inherits = require('inherits')
+var EE = require('events').EventEmitter
+var path = require('path')
+var assert = require('assert')
+var isAbsolute = require('path-is-absolute')
+var globSync = require('./sync.js')
+var common = require('./common.js')
+var alphasort = common.alphasort
+var alphasorti = common.alphasorti
+var setopts = common.setopts
+var ownProp = common.ownProp
+var inflight = require('inflight')
+var util = require('util')
+var childrenIgnored = common.childrenIgnored
+var isIgnored = common.isIgnored
+
+var once = require('once')
+
+function glob (pattern, options, cb) {
+  if (typeof options === 'function') cb = options, options = {}
+  if (!options) options = {}
+
+  if (options.sync) {
+    if (cb)
+      throw new TypeError('callback provided to sync glob')
+    return globSync(pattern, options)
+  }
+
+  return new Glob(pattern, options, cb)
+}
+
+glob.sync = globSync
+var GlobSync = glob.GlobSync = globSync.GlobSync
+
+// old api surface
+glob.glob = glob
+
+function extend (origin, add) {
+  if (add === null || typeof add !== 'object') {
+    return origin
+  }
+
+  var keys = Object.keys(add)
+  var i = keys.length
+  while (i--) {
+    origin[keys[i]] = add[keys[i]]
+  }
+  return origin
+}
+
+glob.hasMagic = function (pattern, options_) {
+  var options = extend({}, options_)
+  options.noprocess = true
+
+  var g = new Glob(pattern, options)
+  var set = g.minimatch.set
+
+  if (!pattern)
+    return false
+
+  if (set.length > 1)
+    return true
+
+  for (var j = 0; j < set[0].length; j++) {
+    if (typeof set[0][j] !== 'string')
+      return true
+  }
+
+  return false
+}
+
+glob.Glob = Glob
+inherits(Glob, EE)
+function Glob (pattern, options, cb) {
+  if (typeof options === 'function') {
+    cb = options
+    options = null
+  }
+
+  if (options && options.sync) {
+    if (cb)
+      throw new TypeError('callback provided to sync glob')
+    return new GlobSync(pattern, options)
+  }
+
+  if (!(this instanceof Glob))
+    return new Glob(pattern, options, cb)
+
+  setopts(this, pattern, options)
+  this._didRealPath = false
+
+  // process each pattern in the minimatch set
+  var n = this.minimatch.set.length
+
+  // The matches are stored as {<filename>: true,...} so that
+  // duplicates are automagically pruned.
+  // Later, we do an Object.keys() on these.
+  // Keep them as a list so we can fill in when nonull is set.
+  this.matches = new Array(n)
+
+  if (typeof cb === 'function') {
+    cb = once(cb)
+    this.on('error', cb)
+    this.on('end', function (matches) {
+      cb(null, matches)
+    })
+  }
+
+  var self = this
+  this._processing = 0
+
+  this._emitQueue = []
+  this._processQueue = []
+  this.paused = false
+
+  if (this.noprocess)
+    return this
+
+  if (n === 0)
+    return done()
+
+  var sync = true
+  for (var i = 0; i < n; i ++) {
+    this._process(this.minimatch.set[i], i, false, done)
+  }
+  sync = false
+
+  function done () {
+    --self._processing
+    if (self._processing <= 0) {
+      if (sync) {
+        process.nextTick(function () {
+          self._finish()
+        })
+      } else {
+        self._finish()
+      }
+    }
+  }
+}
+
+Glob.prototype._finish = function () {
+  assert(this instanceof Glob)
+  if (this.aborted)
+    return
+
+  if (this.realpath && !this._didRealpath)
+    return this._realpath()
+
+  common.finish(this)
+  this.emit('end', this.found)
+}
+
+Glob.prototype._realpath = function () {
+  if (this._didRealpath)
+    return
+
+  this._didRealpath = true
+
+  var n = this.matches.length
+  if (n === 0)
+    return this._finish()
+
+  var self = this
+  for (var i = 0; i < this.matches.length; i++)
+    this._realpathSet(i, next)
+
+  function next () {
+    if (--n === 0)
+      self._finish()
+  }
+}
+
+Glob.prototype._realpathSet = function (index, cb) {
+  var matchset = this.matches[index]
+  if (!matchset)
+    return cb()
+
+  var found = Object.keys(matchset)
+  var self = this
+  var n = found.length
+
+  if (n === 0)
+    return cb()
+
+  var set = this.matches[index] = Object.create(null)
+  found.forEach(function (p, i) {
+    // If there's a problem with the stat, then it means that
+    // one or more of the links in the realpath couldn't be
+    // resolved.  just return the abs value in that case.
+    p = self._makeAbs(p)
+    rp.realpath(p, self.realpathCache, function (er, real) {
+      if (!er)
+        set[real] = true
+      else if (er.syscall === 'stat')
+        set[p] = true
+      else
+        self.emit('error', er) // srsly wtf right here
+
+      if (--n === 0) {
+        self.matches[index] = set
+        cb()
+      }
+    })
+  })
+}
+
+Glob.prototype._mark = function (p) {
+  return common.mark(this, p)
+}
+
+Glob.prototype._makeAbs = function (f) {
+  return common.makeAbs(this, f)
+}
+
+Glob.prototype.abort = function () {
+  this.aborted = true
+  this.emit('abort')
+}
+
+Glob.prototype.pause = function () {
+  if (!this.paused) {
+    this.paused = true
+    this.emit('pause')
+  }
+}
+
+Glob.prototype.resume = function () {
+  if (this.paused) {
+    this.emit('resume')
+    this.paused = false
+    if (this._emitQueue.length) {
+      var eq = this._emitQueue.slice(0)
+      this._emitQueue.length = 0
+      for (var i = 0; i < eq.length; i ++) {
+        var e = eq[i]
+        this._emitMatch(e[0], e[1])
+      }
+    }
+    if (this._processQueue.length) {
+      var pq = this._processQueue.slice(0)
+      this._processQueue.length = 0
+      for (var i = 0; i < pq.length; i ++) {
+        var p = pq[i]
+        this._processing--
+        this._process(p[0], p[1], p[2], p[3])
+      }
+    }
+  }
+}
+
+Glob.prototype._process = function (pattern, index, inGlobStar, cb) {
+  assert(this instanceof Glob)
+  assert(typeof cb === 'function')
+
+  if (this.aborted)
+    return
+
+  this._processing++
+  if (this.paused) {
+    this._processQueue.push([pattern, index, inGlobStar, cb])
+    return
+  }
+
+  //console.error('PROCESS %d', this._processing, pattern)
+
+  // Get the first [n] parts of pattern that are all strings.
+  var n = 0
+  while (typeof pattern[n] === 'string') {
+    n ++
+  }
+  // now n is the index of the first one that is *not* a string.
+
+  // see if there's anything else
+  var prefix
+  switch (n) {
+    // if not, then this is rather simple
+    case pattern.length:
+      this._processSimple(pattern.join('/'), index, cb)
+      return
+
+    case 0:
+      // pattern *starts* with some non-trivial item.
+      // going to readdir(cwd), but not include the prefix in matches.
+      prefix = null
+      break
+
+    default:
+      // pattern has some string bits in the front.
+      // whatever it starts with, whether that's 'absolute' like /foo/bar,
+      // or 'relative' like '../baz'
+      prefix = pattern.slice(0, n).join('/')
+      break
+  }
+
+  var remain = pattern.slice(n)
+
+  // get the list of entries.
+  var read
+  if (prefix === null)
+    read = '.'
+  else if (isAbsolute(prefix) || isAbsolute(pattern.join('/'))) {
+    if (!prefix || !isAbsolute(prefix))
+      prefix = '/' + prefix
+    read = prefix
+  } else
+    read = prefix
+
+  var abs = this._makeAbs(read)
+
+  //if ignored, skip _processing
+  if (childrenIgnored(this, read))
+    return cb()
+
+  var isGlobStar = remain[0] === minimatch.GLOBSTAR
+  if (isGlobStar)
+    this._processGlobStar(prefix, read, abs, remain, index, inGlobStar, cb)
+  else
+    this._processReaddir(prefix, read, abs, remain, index, inGlobStar, cb)
+}
+
+Glob.prototype._processReaddir = function (prefix, read, abs, remain, index, inGlobStar, cb) {
+  var self = this
+  this._readdir(abs, inGlobStar, function (er, entries) {
+    return self._processReaddir2(prefix, read, abs, remain, index, inGlobStar, entries, cb)
+  })
+}
+
+Glob.prototype._processReaddir2 = function (prefix, read, abs, remain, index, inGlobStar, entries, cb) {
+
+  // if the abs isn't a dir, then nothing can match!
+  if (!entries)
+    return cb()
+
+  // It will only match dot entries if it starts with a dot, or if
+  // dot is set.  Stuff like @(.foo|.bar) isn't allowed.
+  var pn = remain[0]
+  var negate = !!this.minimatch.negate
+  var rawGlob = pn._glob
+  var dotOk = this.dot || rawGlob.charAt(0) === '.'
+
+  var matchedEntries = []
+  for (var i = 0; i < entries.length; i++) {
+    var e = entries[i]
+    if (e.charAt(0) !== '.' || dotOk) {
+      var m
+      if (negate && !prefix) {
+        m = !e.match(pn)
+      } else {
+        m = e.match(pn)
+      }
+      if (m)
+        matchedEntries.push(e)
+    }
+  }
+
+  //console.error('prd2', prefix, entries, remain[0]._glob, matchedEntries)
+
+  var len = matchedEntries.length
+  // If there are no matched entries, then nothing matches.
+  if (len === 0)
+    return cb()
+
+  // if this is the last remaining pattern bit, then no need for
+  // an additional stat *unless* the user has specified mark or
+  // stat explicitly.  We know they exist, since readdir returned
+  // them.
+
+  if (remain.length === 1 && !this.mark && !this.stat) {
+    if (!this.matches[index])
+      this.matches[index] = Object.create(null)
+
+    for (var i = 0; i < len; i ++) {
+      var e = matchedEntries[i]
+      if (prefix) {
+        if (prefix !== '/')
+          e = prefix + '/' + e
+        else
+          e = prefix + e
+      }
+
+      if (e.charAt(0) === '/' && !this.nomount) {
+        e = path.join(this.root, e)
+      }
+      this._emitMatch(index, e)
+    }
+    // This was the last one, and no stats were needed
+    return cb()
+  }
+
+  // now test all matched entries as stand-ins for that part
+  // of the pattern.
+  remain.shift()
+  for (var i = 0; i < len; i ++) {
+    var e = matchedEntries[i]
+    var newPattern
+    if (prefix) {
+      if (prefix !== '/')
+        e = prefix + '/' + e
+      else
+        e = prefix + e
+    }
+    this._process([e].concat(remain), index, inGlobStar, cb)
+  }
+  cb()
+}
+
+Glob.prototype._emitMatch = function (index, e) {
+  if (this.aborted)
+    return
+
+  if (isIgnored(this, e))
+    return
+
+  if (this.paused) {
+    this._emitQueue.push([index, e])
+    return
+  }
+
+  var abs = isAbsolute(e) ? e : this._makeAbs(e)
+
+  if (this.mark)
+    e = this._mark(e)
+
+  if (this.absolute)
+    e = abs
+
+  if (this.matches[index][e])
+    return
+
+  if (this.nodir) {
+    var c = this.cache[abs]
+    if (c === 'DIR' || Array.isArray(c))
+      return
+  }
+
+  this.matches[index][e] = true
+
+  var st = this.statCache[abs]
+  if (st)
+    this.emit('stat', e, st)
+
+  this.emit('match', e)
+}
+
+Glob.prototype._readdirInGlobStar = function (abs, cb) {
+  if (this.aborted)
+    return
+
+  // follow all symlinked directories forever
+  // just proceed as if this is a non-globstar situation
+  if (this.follow)
+    return this._readdir(abs, false, cb)
+
+  var lstatkey = 'lstat\0' + abs
+  var self = this
+  var lstatcb = inflight(lstatkey, lstatcb_)
+
+  if (lstatcb)
+    fs.lstat(abs, lstatcb)
+
+  function lstatcb_ (er, lstat) {
+    if (er && er.code === 'ENOENT')
+      return cb()
+
+    var isSym = lstat && lstat.isSymbolicLink()
+    self.symlinks[abs] = isSym
+
+    // If it's not a symlink or a dir, then it's definitely a regular file.
+    // don't bother doing a readdir in that case.
+    if (!isSym && lstat && !lstat.isDirectory()) {
+      self.cache[abs] = 'FILE'
+      cb()
+    } else
+      self._readdir(abs, false, cb)
+  }
+}
+
+Glob.prototype._readdir = function (abs, inGlobStar, cb) {
+  if (this.aborted)
+    return
+
+  cb = inflight('readdir\0'+abs+'\0'+inGlobStar, cb)
+  if (!cb)
+    return
+
+  //console.error('RD %j %j', +inGlobStar, abs)
+  if (inGlobStar && !ownProp(this.symlinks, abs))
+    return this._readdirInGlobStar(abs, cb)
+
+  if (ownProp(this.cache, abs)) {
+    var c = this.cache[abs]
+    if (!c || c === 'FILE')
+      return cb()
+
+    if (Array.isArray(c))
+      return cb(null, c)
+  }
+
+  var self = this
+  fs.readdir(abs, readdirCb(this, abs, cb))
+}
+
+function readdirCb (self, abs, cb) {
+  return function (er, entries) {
+    if (er)
+      self._readdirError(abs, er, cb)
+    else
+      self._readdirEntries(abs, entries, cb)
+  }
+}
+
+Glob.prototype._readdirEntries = function (abs, entries, cb) {
+  if (this.aborted)
+    return
+
+  // if we haven't asked to stat everything, then just
+  // assume that everything in there exists, so we can avoid
+  // having to stat it a second time.
+  if (!this.mark && !this.stat) {
+    for (var i = 0; i < entries.length; i ++) {
+      var e = entries[i]
+      if (abs === '/')
+        e = abs + e
+      else
+        e = abs + '/' + e
+      this.cache[e] = true
+    }
+  }
+
+  this.cache[abs] = entries
+  return cb(null, entries)
+}
+
+Glob.prototype._readdirError = function (f, er, cb) {
+  if (this.aborted)
+    return
+
+  // handle errors, and cache the information
+  switch (er.code) {
+    case 'ENOTSUP': // https://github.com/isaacs/node-glob/issues/205
+    case 'ENOTDIR': // totally normal. means it *does* exist.
+      var abs = this._makeAbs(f)
+      this.cache[abs] = 'FILE'
+      if (abs === this.cwdAbs) {
+        var error = new Error(er.code + ' invalid cwd ' + this.cwd)
+        error.path = this.cwd
+        error.code = er.code
+        this.emit('error', error)
+        this.abort()
+      }
+      break
+
+    case 'ENOENT': // not terribly unusual
+    case 'ELOOP':
+    case 'ENAMETOOLONG':
+    case 'UNKNOWN':
+      this.cache[this._makeAbs(f)] = false
+      break
+
+    default: // some unusual error.  Treat as failure.
+      this.cache[this._makeAbs(f)] = false
+      if (this.strict) {
+        this.emit('error', er)
+        // If the error is handled, then we abort
+        // if not, we threw out of here
+        this.abort()
+      }
+      if (!this.silent)
+        console.error('glob error', er)
+      break
+  }
+
+  return cb()
+}
+
+Glob.prototype._processGlobStar = function (prefix, read, abs, remain, index, inGlobStar, cb) {
+  var self = this
+  this._readdir(abs, inGlobStar, function (er, entries) {
+    self._processGlobStar2(prefix, read, abs, remain, index, inGlobStar, entries, cb)
+  })
+}
+
+
+Glob.prototype._processGlobStar2 = function (prefix, read, abs, remain, index, inGlobStar, entries, cb) {
+  //console.error('pgs2', prefix, remain[0], entries)
+
+  // no entries means not a dir, so it can never have matches
+  // foo.txt/** doesn't match foo.txt
+  if (!entries)
+    return cb()
+
+  // test without the globstar, and with every child both below
+  // and replacing the globstar.
+  var remainWithoutGlobStar = remain.slice(1)
+  var gspref = prefix ? [ prefix ] : []
+  var noGlobStar = gspref.concat(remainWithoutGlobStar)
+
+  // the noGlobStar pattern exits the inGlobStar state
+  this._process(noGlobStar, index, false, cb)
+
+  var isSym = this.symlinks[abs]
+  var len = entries.length
+
+  // If it's a symlink, and we're in a globstar, then stop
+  if (isSym && inGlobStar)
+    return cb()
+
+  for (var i = 0; i < len; i++) {
+    var e = entries[i]
+    if (e.charAt(0) === '.' && !this.dot)
+      continue
+
+    // these two cases enter the inGlobStar state
+    var instead = gspref.concat(entries[i], remainWithoutGlobStar)
+    this._process(instead, index, true, cb)
+
+    var below = gspref.concat(entries[i], remain)
+    this._process(below, index, true, cb)
+  }
+
+  cb()
+}
+
+Glob.prototype._processSimple = function (prefix, index, cb) {
+  // XXX review this.  Shouldn't it be doing the mounting etc
+  // before doing stat?  kinda weird?
+  var self = this
+  this._stat(prefix, function (er, exists) {
+    self._processSimple2(prefix, index, er, exists, cb)
+  })
+}
+Glob.prototype._processSimple2 = function (prefix, index, er, exists, cb) {
+
+  //console.error('ps2', prefix, exists)
+
+  if (!this.matches[index])
+    this.matches[index] = Object.create(null)
+
+  // If it doesn't exist, then just mark the lack of results
+  if (!exists)
+    return cb()
+
+  if (prefix && isAbsolute(prefix) && !this.nomount) {
+    var trail = /[\/\\]$/.test(prefix)
+    if (prefix.charAt(0) === '/') {
+      prefix = path.join(this.root, prefix)
+    } else {
+      prefix = path.resolve(this.root, prefix)
+      if (trail)
+        prefix += '/'
+    }
+  }
+
+  if (process.platform === 'win32')
+    prefix = prefix.replace(/\\/g, '/')
+
+  // Mark this as a match
+  this._emitMatch(index, prefix)
+  cb()
+}
+
+// Returns either 'DIR', 'FILE', or false
+Glob.prototype._stat = function (f, cb) {
+  var abs = this._makeAbs(f)
+  var needDir = f.slice(-1) === '/'
+
+  if (f.length > this.maxLength)
+    return cb()
+
+  if (!this.stat && ownProp(this.cache, abs)) {
+    var c = this.cache[abs]
+
+    if (Array.isArray(c))
+      c = 'DIR'
+
+    // It exists, but maybe not how we need it
+    if (!needDir || c === 'DIR')
+      return cb(null, c)
+
+    if (needDir && c === 'FILE')
+      return cb()
+
+    // otherwise we have to stat, because maybe c=true
+    // if we know it exists, but not what it is.
+  }
+
+  var exists
+  var stat = this.statCache[abs]
+  if (stat !== undefined) {
+    if (stat === false)
+      return cb(null, stat)
+    else {
+      var type = stat.isDirectory() ? 'DIR' : 'FILE'
+      if (needDir && type === 'FILE')
+        return cb()
+      else
+        return cb(null, type, stat)
+    }
+  }
+
+  var self = this
+  var statcb = inflight('stat\0' + abs, lstatcb_)
+  if (statcb)
+    fs.lstat(abs, statcb)
+
+  function lstatcb_ (er, lstat) {
+    if (lstat && lstat.isSymbolicLink()) {
+      // If it's a symlink, then treat it as the target, unless
+      // the target does not exist, then treat it as a file.
+      return fs.stat(abs, function (er, stat) {
+        if (er)
+          self._stat2(f, abs, null, lstat, cb)
+        else
+          self._stat2(f, abs, er, stat, cb)
+      })
+    } else {
+      self._stat2(f, abs, er, lstat, cb)
+    }
+  }
+}
+
+Glob.prototype._stat2 = function (f, abs, er, stat, cb) {
+  if (er && (er.code === 'ENOENT' || er.code === 'ENOTDIR')) {
+    this.statCache[abs] = false
+    return cb()
+  }
+
+  var needDir = f.slice(-1) === '/'
+  this.statCache[abs] = stat
+
+  if (abs.slice(-1) === '/' && stat && !stat.isDirectory())
+    return cb(null, false, stat)
+
+  var c = true
+  if (stat)
+    c = stat.isDirectory() ? 'DIR' : 'FILE'
+  this.cache[abs] = this.cache[abs] || c
+
+  if (needDir && c === 'FILE')
+    return cb()
+
+  return cb(null, c, stat)
+}
diff --git a/stdlib/nodejs/node_modules/glob/package.json b/stdlib/nodejs/node_modules/glob/package.json
new file mode 100644
index 00000000..32afb8c5
--- /dev/null
+++ b/stdlib/nodejs/node_modules/glob/package.json
@@ -0,0 +1,76 @@
+{
+  "_from": "glob@7.1.3",
+  "_id": "glob@7.1.3",
+  "_inBundle": false,
+  "_integrity": "sha512-vcfuiIxogLV4DlGBHIUOwI0IbrJ8HWPc4MU7HzviGeNho/UJDfi6B5p3sHeWIQ0KGIU0Jpxi5ZHxemQfLkkAwQ==",
+  "_location": "/glob",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "version",
+    "registry": true,
+    "raw": "glob@7.1.3",
+    "name": "glob",
+    "escapedName": "glob",
+    "rawSpec": "7.1.3",
+    "saveSpec": null,
+    "fetchSpec": "7.1.3"
+  },
+  "_requiredBy": [
+    "/"
+  ],
+  "_resolved": "https://registry.npmjs.org/glob/-/glob-7.1.3.tgz",
+  "_shasum": "3960832d3f1574108342dafd3a67b332c0969df1",
+  "_spec": "glob@7.1.3",
+  "_where": "/home/guillaume/workspace/opensource/opal/opal/stdlib/nodejs",
+  "author": {
+    "name": "Isaac Z. Schlueter",
+    "email": "i@izs.me",
+    "url": "http://blog.izs.me/"
+  },
+  "bugs": {
+    "url": "https://github.com/isaacs/node-glob/issues"
+  },
+  "bundleDependencies": false,
+  "dependencies": {
+    "fs.realpath": "^1.0.0",
+    "inflight": "^1.0.4",
+    "inherits": "2",
+    "minimatch": "^3.0.4",
+    "once": "^1.3.0",
+    "path-is-absolute": "^1.0.0"
+  },
+  "deprecated": false,
+  "description": "a little globber",
+  "devDependencies": {
+    "mkdirp": "0",
+    "rimraf": "^2.2.8",
+    "tap": "^12.0.1",
+    "tick": "0.0.6"
+  },
+  "engines": {
+    "node": "*"
+  },
+  "files": [
+    "glob.js",
+    "sync.js",
+    "common.js"
+  ],
+  "homepage": "https://github.com/isaacs/node-glob#readme",
+  "license": "ISC",
+  "main": "glob.js",
+  "name": "glob",
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/isaacs/node-glob.git"
+  },
+  "scripts": {
+    "bench": "bash benchmark.sh",
+    "benchclean": "node benchclean.js",
+    "prepublish": "npm run benchclean",
+    "prof": "bash prof.sh && cat profile.txt",
+    "profclean": "rm -f v8.log profile.txt",
+    "test": "tap test/*.js --cov",
+    "test-regen": "npm run profclean && TEST_REGEN=1 node test/00-setup.js"
+  },
+  "version": "7.1.3"
+}
diff --git a/stdlib/nodejs/node_modules/glob/sync.js b/stdlib/nodejs/node_modules/glob/sync.js
new file mode 100644
index 00000000..c952134b
--- /dev/null
+++ b/stdlib/nodejs/node_modules/glob/sync.js
@@ -0,0 +1,486 @@
+module.exports = globSync
+globSync.GlobSync = GlobSync
+
+var fs = require('fs')
+var rp = require('fs.realpath')
+var minimatch = require('minimatch')
+var Minimatch = minimatch.Minimatch
+var Glob = require('./glob.js').Glob
+var util = require('util')
+var path = require('path')
+var assert = require('assert')
+var isAbsolute = require('path-is-absolute')
+var common = require('./common.js')
+var alphasort = common.alphasort
+var alphasorti = common.alphasorti
+var setopts = common.setopts
+var ownProp = common.ownProp
+var childrenIgnored = common.childrenIgnored
+var isIgnored = common.isIgnored
+
+function globSync (pattern, options) {
+  if (typeof options === 'function' || arguments.length === 3)
+    throw new TypeError('callback provided to sync glob\n'+
+                        'See: https://github.com/isaacs/node-glob/issues/167')
+
+  return new GlobSync(pattern, options).found
+}
+
+function GlobSync (pattern, options) {
+  if (!pattern)
+    throw new Error('must provide pattern')
+
+  if (typeof options === 'function' || arguments.length === 3)
+    throw new TypeError('callback provided to sync glob\n'+
+                        'See: https://github.com/isaacs/node-glob/issues/167')
+
+  if (!(this instanceof GlobSync))
+    return new GlobSync(pattern, options)
+
+  setopts(this, pattern, options)
+
+  if (this.noprocess)
+    return this
+
+  var n = this.minimatch.set.length
+  this.matches = new Array(n)
+  for (var i = 0; i < n; i ++) {
+    this._process(this.minimatch.set[i], i, false)
+  }
+  this._finish()
+}
+
+GlobSync.prototype._finish = function () {
+  assert(this instanceof GlobSync)
+  if (this.realpath) {
+    var self = this
+    this.matches.forEach(function (matchset, index) {
+      var set = self.matches[index] = Object.create(null)
+      for (var p in matchset) {
+        try {
+          p = self._makeAbs(p)
+          var real = rp.realpathSync(p, self.realpathCache)
+          set[real] = true
+        } catch (er) {
+          if (er.syscall === 'stat')
+            set[self._makeAbs(p)] = true
+          else
+            throw er
+        }
+      }
+    })
+  }
+  common.finish(this)
+}
+
+
+GlobSync.prototype._process = function (pattern, index, inGlobStar) {
+  assert(this instanceof GlobSync)
+
+  // Get the first [n] parts of pattern that are all strings.
+  var n = 0
+  while (typeof pattern[n] === 'string') {
+    n ++
+  }
+  // now n is the index of the first one that is *not* a string.
+
+  // See if there's anything else
+  var prefix
+  switch (n) {
+    // if not, then this is rather simple
+    case pattern.length:
+      this._processSimple(pattern.join('/'), index)
+      return
+
+    case 0:
+      // pattern *starts* with some non-trivial item.
+      // going to readdir(cwd), but not include the prefix in matches.
+      prefix = null
+      break
+
+    default:
+      // pattern has some string bits in the front.
+      // whatever it starts with, whether that's 'absolute' like /foo/bar,
+      // or 'relative' like '../baz'
+      prefix = pattern.slice(0, n).join('/')
+      break
+  }
+
+  var remain = pattern.slice(n)
+
+  // get the list of entries.
+  var read
+  if (prefix === null)
+    read = '.'
+  else if (isAbsolute(prefix) || isAbsolute(pattern.join('/'))) {
+    if (!prefix || !isAbsolute(prefix))
+      prefix = '/' + prefix
+    read = prefix
+  } else
+    read = prefix
+
+  var abs = this._makeAbs(read)
+
+  //if ignored, skip processing
+  if (childrenIgnored(this, read))
+    return
+
+  var isGlobStar = remain[0] === minimatch.GLOBSTAR
+  if (isGlobStar)
+    this._processGlobStar(prefix, read, abs, remain, index, inGlobStar)
+  else
+    this._processReaddir(prefix, read, abs, remain, index, inGlobStar)
+}
+
+
+GlobSync.prototype._processReaddir = function (prefix, read, abs, remain, index, inGlobStar) {
+  var entries = this._readdir(abs, inGlobStar)
+
+  // if the abs isn't a dir, then nothing can match!
+  if (!entries)
+    return
+
+  // It will only match dot entries if it starts with a dot, or if
+  // dot is set.  Stuff like @(.foo|.bar) isn't allowed.
+  var pn = remain[0]
+  var negate = !!this.minimatch.negate
+  var rawGlob = pn._glob
+  var dotOk = this.dot || rawGlob.charAt(0) === '.'
+
+  var matchedEntries = []
+  for (var i = 0; i < entries.length; i++) {
+    var e = entries[i]
+    if (e.charAt(0) !== '.' || dotOk) {
+      var m
+      if (negate && !prefix) {
+        m = !e.match(pn)
+      } else {
+        m = e.match(pn)
+      }
+      if (m)
+        matchedEntries.push(e)
+    }
+  }
+
+  var len = matchedEntries.length
+  // If there are no matched entries, then nothing matches.
+  if (len === 0)
+    return
+
+  // if this is the last remaining pattern bit, then no need for
+  // an additional stat *unless* the user has specified mark or
+  // stat explicitly.  We know they exist, since readdir returned
+  // them.
+
+  if (remain.length === 1 && !this.mark && !this.stat) {
+    if (!this.matches[index])
+      this.matches[index] = Object.create(null)
+
+    for (var i = 0; i < len; i ++) {
+      var e = matchedEntries[i]
+      if (prefix) {
+        if (prefix.slice(-1) !== '/')
+          e = prefix + '/' + e
+        else
+          e = prefix + e
+      }
+
+      if (e.charAt(0) === '/' && !this.nomount) {
+        e = path.join(this.root, e)
+      }
+      this._emitMatch(index, e)
+    }
+    // This was the last one, and no stats were needed
+    return
+  }
+
+  // now test all matched entries as stand-ins for that part
+  // of the pattern.
+  remain.shift()
+  for (var i = 0; i < len; i ++) {
+    var e = matchedEntries[i]
+    var newPattern
+    if (prefix)
+      newPattern = [prefix, e]
+    else
+      newPattern = [e]
+    this._process(newPattern.concat(remain), index, inGlobStar)
+  }
+}
+
+
+GlobSync.prototype._emitMatch = function (index, e) {
+  if (isIgnored(this, e))
+    return
+
+  var abs = this._makeAbs(e)
+
+  if (this.mark)
+    e = this._mark(e)
+
+  if (this.absolute) {
+    e = abs
+  }
+
+  if (this.matches[index][e])
+    return
+
+  if (this.nodir) {
+    var c = this.cache[abs]
+    if (c === 'DIR' || Array.isArray(c))
+      return
+  }
+
+  this.matches[index][e] = true
+
+  if (this.stat)
+    this._stat(e)
+}
+
+
+GlobSync.prototype._readdirInGlobStar = function (abs) {
+  // follow all symlinked directories forever
+  // just proceed as if this is a non-globstar situation
+  if (this.follow)
+    return this._readdir(abs, false)
+
+  var entries
+  var lstat
+  var stat
+  try {
+    lstat = fs.lstatSync(abs)
+  } catch (er) {
+    if (er.code === 'ENOENT') {
+      // lstat failed, doesn't exist
+      return null
+    }
+  }
+
+  var isSym = lstat && lstat.isSymbolicLink()
+  this.symlinks[abs] = isSym
+
+  // If it's not a symlink or a dir, then it's definitely a regular file.
+  // don't bother doing a readdir in that case.
+  if (!isSym && lstat && !lstat.isDirectory())
+    this.cache[abs] = 'FILE'
+  else
+    entries = this._readdir(abs, false)
+
+  return entries
+}
+
+GlobSync.prototype._readdir = function (abs, inGlobStar) {
+  var entries
+
+  if (inGlobStar && !ownProp(this.symlinks, abs))
+    return this._readdirInGlobStar(abs)
+
+  if (ownProp(this.cache, abs)) {
+    var c = this.cache[abs]
+    if (!c || c === 'FILE')
+      return null
+
+    if (Array.isArray(c))
+      return c
+  }
+
+  try {
+    return this._readdirEntries(abs, fs.readdirSync(abs))
+  } catch (er) {
+    this._readdirError(abs, er)
+    return null
+  }
+}
+
+GlobSync.prototype._readdirEntries = function (abs, entries) {
+  // if we haven't asked to stat everything, then just
+  // assume that everything in there exists, so we can avoid
+  // having to stat it a second time.
+  if (!this.mark && !this.stat) {
+    for (var i = 0; i < entries.length; i ++) {
+      var e = entries[i]
+      if (abs === '/')
+        e = abs + e
+      else
+        e = abs + '/' + e
+      this.cache[e] = true
+    }
+  }
+
+  this.cache[abs] = entries
+
+  // mark and cache dir-ness
+  return entries
+}
+
+GlobSync.prototype._readdirError = function (f, er) {
+  // handle errors, and cache the information
+  switch (er.code) {
+    case 'ENOTSUP': // https://github.com/isaacs/node-glob/issues/205
+    case 'ENOTDIR': // totally normal. means it *does* exist.
+      var abs = this._makeAbs(f)
+      this.cache[abs] = 'FILE'
+      if (abs === this.cwdAbs) {
+        var error = new Error(er.code + ' invalid cwd ' + this.cwd)
+        error.path = this.cwd
+        error.code = er.code
+        throw error
+      }
+      break
+
+    case 'ENOENT': // not terribly unusual
+    case 'ELOOP':
+    case 'ENAMETOOLONG':
+    case 'UNKNOWN':
+      this.cache[this._makeAbs(f)] = false
+      break
+
+    default: // some unusual error.  Treat as failure.
+      this.cache[this._makeAbs(f)] = false
+      if (this.strict)
+        throw er
+      if (!this.silent)
+        console.error('glob error', er)
+      break
+  }
+}
+
+GlobSync.prototype._processGlobStar = function (prefix, read, abs, remain, index, inGlobStar) {
+
+  var entries = this._readdir(abs, inGlobStar)
+
+  // no entries means not a dir, so it can never have matches
+  // foo.txt/** doesn't match foo.txt
+  if (!entries)
+    return
+
+  // test without the globstar, and with every child both below
+  // and replacing the globstar.
+  var remainWithoutGlobStar = remain.slice(1)
+  var gspref = prefix ? [ prefix ] : []
+  var noGlobStar = gspref.concat(remainWithoutGlobStar)
+
+  // the noGlobStar pattern exits the inGlobStar state
+  this._process(noGlobStar, index, false)
+
+  var len = entries.length
+  var isSym = this.symlinks[abs]
+
+  // If it's a symlink, and we're in a globstar, then stop
+  if (isSym && inGlobStar)
+    return
+
+  for (var i = 0; i < len; i++) {
+    var e = entries[i]
+    if (e.charAt(0) === '.' && !this.dot)
+      continue
+
+    // these two cases enter the inGlobStar state
+    var instead = gspref.concat(entries[i], remainWithoutGlobStar)
+    this._process(instead, index, true)
+
+    var below = gspref.concat(entries[i], remain)
+    this._process(below, index, true)
+  }
+}
+
+GlobSync.prototype._processSimple = function (prefix, index) {
+  // XXX review this.  Shouldn't it be doing the mounting etc
+  // before doing stat?  kinda weird?
+  var exists = this._stat(prefix)
+
+  if (!this.matches[index])
+    this.matches[index] = Object.create(null)
+
+  // If it doesn't exist, then just mark the lack of results
+  if (!exists)
+    return
+
+  if (prefix && isAbsolute(prefix) && !this.nomount) {
+    var trail = /[\/\\]$/.test(prefix)
+    if (prefix.charAt(0) === '/') {
+      prefix = path.join(this.root, prefix)
+    } else {
+      prefix = path.resolve(this.root, prefix)
+      if (trail)
+        prefix += '/'
+    }
+  }
+
+  if (process.platform === 'win32')
+    prefix = prefix.replace(/\\/g, '/')
+
+  // Mark this as a match
+  this._emitMatch(index, prefix)
+}
+
+// Returns either 'DIR', 'FILE', or false
+GlobSync.prototype._stat = function (f) {
+  var abs = this._makeAbs(f)
+  var needDir = f.slice(-1) === '/'
+
+  if (f.length > this.maxLength)
+    return false
+
+  if (!this.stat && ownProp(this.cache, abs)) {
+    var c = this.cache[abs]
+
+    if (Array.isArray(c))
+      c = 'DIR'
+
+    // It exists, but maybe not how we need it
+    if (!needDir || c === 'DIR')
+      return c
+
+    if (needDir && c === 'FILE')
+      return false
+
+    // otherwise we have to stat, because maybe c=true
+    // if we know it exists, but not what it is.
+  }
+
+  var exists
+  var stat = this.statCache[abs]
+  if (!stat) {
+    var lstat
+    try {
+      lstat = fs.lstatSync(abs)
+    } catch (er) {
+      if (er && (er.code === 'ENOENT' || er.code === 'ENOTDIR')) {
+        this.statCache[abs] = false
+        return false
+      }
+    }
+
+    if (lstat && lstat.isSymbolicLink()) {
+      try {
+        stat = fs.statSync(abs)
+      } catch (er) {
+        stat = lstat
+      }
+    } else {
+      stat = lstat
+    }
+  }
+
+  this.statCache[abs] = stat
+
+  var c = true
+  if (stat)
+    c = stat.isDirectory() ? 'DIR' : 'FILE'
+
+  this.cache[abs] = this.cache[abs] || c
+
+  if (needDir && c === 'FILE')
+    return false
+
+  return c
+}
+
+GlobSync.prototype._mark = function (p) {
+  return common.mark(this, p)
+}
+
+GlobSync.prototype._makeAbs = function (f) {
+  return common.makeAbs(this, f)
+}
diff --git a/stdlib/nodejs/node_modules/inflight/LICENSE b/stdlib/nodejs/node_modules/inflight/LICENSE
new file mode 100644
index 00000000..05eeeb88
--- /dev/null
+++ b/stdlib/nodejs/node_modules/inflight/LICENSE
@@ -0,0 +1,15 @@
+The ISC License
+
+Copyright (c) Isaac Z. Schlueter
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
diff --git a/stdlib/nodejs/node_modules/inflight/README.md b/stdlib/nodejs/node_modules/inflight/README.md
new file mode 100644
index 00000000..6dc89291
--- /dev/null
+++ b/stdlib/nodejs/node_modules/inflight/README.md
@@ -0,0 +1,37 @@
+# inflight
+
+Add callbacks to requests in flight to avoid async duplication
+
+## USAGE
+
+```javascript
+var inflight = require('inflight')
+
+// some request that does some stuff
+function req(key, callback) {
+  // key is any random string.  like a url or filename or whatever.
+  //
+  // will return either a falsey value, indicating that the
+  // request for this key is already in flight, or a new callback
+  // which when called will call all callbacks passed to inflightk
+  // with the same key
+  callback = inflight(key, callback)
+
+  // If we got a falsey value back, then there's already a req going
+  if (!callback) return
+
+  // this is where you'd fetch the url or whatever
+  // callback is also once()-ified, so it can safely be assigned
+  // to multiple events etc.  First call wins.
+  setTimeout(function() {
+    callback(null, key)
+  }, 100)
+}
+
+// only assigns a single setTimeout
+// when it dings, all cbs get called
+req('foo', cb1)
+req('foo', cb2)
+req('foo', cb3)
+req('foo', cb4)
+```
diff --git a/stdlib/nodejs/node_modules/inflight/inflight.js b/stdlib/nodejs/node_modules/inflight/inflight.js
new file mode 100644
index 00000000..48202b3c
--- /dev/null
+++ b/stdlib/nodejs/node_modules/inflight/inflight.js
@@ -0,0 +1,54 @@
+var wrappy = require('wrappy')
+var reqs = Object.create(null)
+var once = require('once')
+
+module.exports = wrappy(inflight)
+
+function inflight (key, cb) {
+  if (reqs[key]) {
+    reqs[key].push(cb)
+    return null
+  } else {
+    reqs[key] = [cb]
+    return makeres(key)
+  }
+}
+
+function makeres (key) {
+  return once(function RES () {
+    var cbs = reqs[key]
+    var len = cbs.length
+    var args = slice(arguments)
+
+    // XXX It's somewhat ambiguous whether a new callback added in this
+    // pass should be queued for later execution if something in the
+    // list of callbacks throws, or if it should just be discarded.
+    // However, it's such an edge case that it hardly matters, and either
+    // choice is likely as surprising as the other.
+    // As it happens, we do go ahead and schedule it for later execution.
+    try {
+      for (var i = 0; i < len; i++) {
+        cbs[i].apply(null, args)
+      }
+    } finally {
+      if (cbs.length > len) {
+        // added more in the interim.
+        // de-zalgo, just in case, but don't call again.
+        cbs.splice(0, len)
+        process.nextTick(function () {
+          RES.apply(null, args)
+        })
+      } else {
+        delete reqs[key]
+      }
+    }
+  })
+}
+
+function slice (args) {
+  var length = args.length
+  var array = []
+
+  for (var i = 0; i < length; i++) array[i] = args[i]
+  return array
+}
diff --git a/stdlib/nodejs/node_modules/inflight/package.json b/stdlib/nodejs/node_modules/inflight/package.json
new file mode 100644
index 00000000..8057f39c
--- /dev/null
+++ b/stdlib/nodejs/node_modules/inflight/package.json
@@ -0,0 +1,58 @@
+{
+  "_from": "inflight@^1.0.4",
+  "_id": "inflight@1.0.6",
+  "_inBundle": false,
+  "_integrity": "sha1-Sb1jMdfQLQwJvJEKEHW6gWW1bfk=",
+  "_location": "/inflight",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "range",
+    "registry": true,
+    "raw": "inflight@^1.0.4",
+    "name": "inflight",
+    "escapedName": "inflight",
+    "rawSpec": "^1.0.4",
+    "saveSpec": null,
+    "fetchSpec": "^1.0.4"
+  },
+  "_requiredBy": [
+    "/glob"
+  ],
+  "_resolved": "https://registry.npmjs.org/inflight/-/inflight-1.0.6.tgz",
+  "_shasum": "49bd6331d7d02d0c09bc910a1075ba8165b56df9",
+  "_spec": "inflight@^1.0.4",
+  "_where": "/home/guillaume/workspace/opensource/opal/opal/stdlib/nodejs/node_modules/glob",
+  "author": {
+    "name": "Isaac Z. Schlueter",
+    "email": "i@izs.me",
+    "url": "http://blog.izs.me/"
+  },
+  "bugs": {
+    "url": "https://github.com/isaacs/inflight/issues"
+  },
+  "bundleDependencies": false,
+  "dependencies": {
+    "once": "^1.3.0",
+    "wrappy": "1"
+  },
+  "deprecated": false,
+  "description": "Add callbacks to requests in flight to avoid async duplication",
+  "devDependencies": {
+    "tap": "^7.1.2"
+  },
+  "files": [
+    "inflight.js"
+  ],
+  "homepage": "https://github.com/isaacs/inflight",
+  "license": "ISC",
+  "main": "inflight.js",
+  "name": "inflight",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/npm/inflight.git"
+  },
+  "scripts": {
+    "test": "tap test.js --100"
+  },
+  "version": "1.0.6"
+}
diff --git a/stdlib/nodejs/node_modules/inherits/LICENSE b/stdlib/nodejs/node_modules/inherits/LICENSE
new file mode 100644
index 00000000..dea3013d
--- /dev/null
+++ b/stdlib/nodejs/node_modules/inherits/LICENSE
@@ -0,0 +1,16 @@
+The ISC License
+
+Copyright (c) Isaac Z. Schlueter
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+PERFORMANCE OF THIS SOFTWARE.
+
diff --git a/stdlib/nodejs/node_modules/inherits/README.md b/stdlib/nodejs/node_modules/inherits/README.md
new file mode 100644
index 00000000..b1c56658
--- /dev/null
+++ b/stdlib/nodejs/node_modules/inherits/README.md
@@ -0,0 +1,42 @@
+Browser-friendly inheritance fully compatible with standard node.js
+[inherits](http://nodejs.org/api/util.html#util_util_inherits_constructor_superconstructor).
+
+This package exports standard `inherits` from node.js `util` module in
+node environment, but also provides alternative browser-friendly
+implementation through [browser
+field](https://gist.github.com/shtylman/4339901). Alternative
+implementation is a literal copy of standard one located in standalone
+module to avoid requiring of `util`. It also has a shim for old
+browsers with no `Object.create` support.
+
+While keeping you sure you are using standard `inherits`
+implementation in node.js environment, it allows bundlers such as
+[browserify](https://github.com/substack/node-browserify) to not
+include full `util` package to your client code if all you need is
+just `inherits` function. It worth, because browser shim for `util`
+package is large and `inherits` is often the single function you need
+from it.
+
+It's recommended to use this package instead of
+`require('util').inherits` for any code that has chances to be used
+not only in node.js but in browser too.
+
+## usage
+
+```js
+var inherits = require('inherits');
+// then use exactly as the standard one
+```
+
+## note on version ~1.0
+
+Version ~1.0 had completely different motivation and is not compatible
+neither with 2.0 nor with standard node.js `inherits`.
+
+If you are using version ~1.0 and planning to switch to ~2.0, be
+careful:
+
+* new version uses `super_` instead of `super` for referencing
+  superclass
+* new version overwrites current prototype while old one preserves any
+  existing fields on it
diff --git a/stdlib/nodejs/node_modules/inherits/inherits.js b/stdlib/nodejs/node_modules/inherits/inherits.js
new file mode 100644
index 00000000..3b94763a
--- /dev/null
+++ b/stdlib/nodejs/node_modules/inherits/inherits.js
@@ -0,0 +1,7 @@
+try {
+  var util = require('util');
+  if (typeof util.inherits !== 'function') throw '';
+  module.exports = util.inherits;
+} catch (e) {
+  module.exports = require('./inherits_browser.js');
+}
diff --git a/stdlib/nodejs/node_modules/inherits/inherits_browser.js b/stdlib/nodejs/node_modules/inherits/inherits_browser.js
new file mode 100644
index 00000000..c1e78a75
--- /dev/null
+++ b/stdlib/nodejs/node_modules/inherits/inherits_browser.js
@@ -0,0 +1,23 @@
+if (typeof Object.create === 'function') {
+  // implementation from standard node.js 'util' module
+  module.exports = function inherits(ctor, superCtor) {
+    ctor.super_ = superCtor
+    ctor.prototype = Object.create(superCtor.prototype, {
+      constructor: {
+        value: ctor,
+        enumerable: false,
+        writable: true,
+        configurable: true
+      }
+    });
+  };
+} else {
+  // old school shim for old browsers
+  module.exports = function inherits(ctor, superCtor) {
+    ctor.super_ = superCtor
+    var TempCtor = function () {}
+    TempCtor.prototype = superCtor.prototype
+    ctor.prototype = new TempCtor()
+    ctor.prototype.constructor = ctor
+  }
+}
diff --git a/stdlib/nodejs/node_modules/inherits/package.json b/stdlib/nodejs/node_modules/inherits/package.json
new file mode 100644
index 00000000..179263cd
--- /dev/null
+++ b/stdlib/nodejs/node_modules/inherits/package.json
@@ -0,0 +1,61 @@
+{
+  "_from": "inherits@2",
+  "_id": "inherits@2.0.3",
+  "_inBundle": false,
+  "_integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
+  "_location": "/inherits",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "range",
+    "registry": true,
+    "raw": "inherits@2",
+    "name": "inherits",
+    "escapedName": "inherits",
+    "rawSpec": "2",
+    "saveSpec": null,
+    "fetchSpec": "2"
+  },
+  "_requiredBy": [
+    "/glob"
+  ],
+  "_resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
+  "_shasum": "633c2c83e3da42a502f52466022480f4208261de",
+  "_spec": "inherits@2",
+  "_where": "/home/guillaume/workspace/opensource/opal/opal/stdlib/nodejs/node_modules/glob",
+  "browser": "./inherits_browser.js",
+  "bugs": {
+    "url": "https://github.com/isaacs/inherits/issues"
+  },
+  "bundleDependencies": false,
+  "deprecated": false,
+  "description": "Browser-friendly inheritance fully compatible with standard node.js inherits()",
+  "devDependencies": {
+    "tap": "^7.1.0"
+  },
+  "files": [
+    "inherits.js",
+    "inherits_browser.js"
+  ],
+  "homepage": "https://github.com/isaacs/inherits#readme",
+  "keywords": [
+    "inheritance",
+    "class",
+    "klass",
+    "oop",
+    "object-oriented",
+    "inherits",
+    "browser",
+    "browserify"
+  ],
+  "license": "ISC",
+  "main": "./inherits.js",
+  "name": "inherits",
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/isaacs/inherits.git"
+  },
+  "scripts": {
+    "test": "node test"
+  },
+  "version": "2.0.3"
+}
diff --git a/stdlib/nodejs/node_modules/minimatch/LICENSE b/stdlib/nodejs/node_modules/minimatch/LICENSE
new file mode 100644
index 00000000..19129e31
--- /dev/null
+++ b/stdlib/nodejs/node_modules/minimatch/LICENSE
@@ -0,0 +1,15 @@
+The ISC License
+
+Copyright (c) Isaac Z. Schlueter and Contributors
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
diff --git a/stdlib/nodejs/node_modules/minimatch/README.md b/stdlib/nodejs/node_modules/minimatch/README.md
new file mode 100644
index 00000000..ad72b813
--- /dev/null
+++ b/stdlib/nodejs/node_modules/minimatch/README.md
@@ -0,0 +1,209 @@
+# minimatch
+
+A minimal matching utility.
+
+[![Build Status](https://secure.travis-ci.org/isaacs/minimatch.svg)](http://travis-ci.org/isaacs/minimatch)
+
+
+This is the matching library used internally by npm.
+
+It works by converting glob expressions into JavaScript `RegExp`
+objects.
+
+## Usage
+
+```javascript
+var minimatch = require("minimatch")
+
+minimatch("bar.foo", "*.foo") // true!
+minimatch("bar.foo", "*.bar") // false!
+minimatch("bar.foo", "*.+(bar|foo)", { debug: true }) // true, and noisy!
+```
+
+## Features
+
+Supports these glob features:
+
+* Brace Expansion
+* Extended glob matching
+* "Globstar" `**` matching
+
+See:
+
+* `man sh`
+* `man bash`
+* `man 3 fnmatch`
+* `man 5 gitignore`
+
+## Minimatch Class
+
+Create a minimatch object by instantiating the `minimatch.Minimatch` class.
+
+```javascript
+var Minimatch = require("minimatch").Minimatch
+var mm = new Minimatch(pattern, options)
+```
+
+### Properties
+
+* `pattern` The original pattern the minimatch object represents.
+* `options` The options supplied to the constructor.
+* `set` A 2-dimensional array of regexp or string expressions.
+  Each row in the
+  array corresponds to a brace-expanded pattern.  Each item in the row
+  corresponds to a single path-part.  For example, the pattern
+  `{a,b/c}/d` would expand to a set of patterns like:
+
+        [ [ a, d ]
+        , [ b, c, d ] ]
+
+    If a portion of the pattern doesn't have any "magic" in it
+    (that is, it's something like `"foo"` rather than `fo*o?`), then it
+    will be left as a string rather than converted to a regular
+    expression.
+
+* `regexp` Created by the `makeRe` method.  A single regular expression
+  expressing the entire pattern.  This is useful in cases where you wish
+  to use the pattern somewhat like `fnmatch(3)` with `FNM_PATH` enabled.
+* `negate` True if the pattern is negated.
+* `comment` True if the pattern is a comment.
+* `empty` True if the pattern is `""`.
+
+### Methods
+
+* `makeRe` Generate the `regexp` member if necessary, and return it.
+  Will return `false` if the pattern is invalid.
+* `match(fname)` Return true if the filename matches the pattern, or
+  false otherwise.
+* `matchOne(fileArray, patternArray, partial)` Take a `/`-split
+  filename, and match it against a single row in the `regExpSet`.  This
+  method is mainly for internal use, but is exposed so that it can be
+  used by a glob-walker that needs to avoid excessive filesystem calls.
+
+All other methods are internal, and will be called as necessary.
+
+### minimatch(path, pattern, options)
+
+Main export.  Tests a path against the pattern using the options.
+
+```javascript
+var isJS = minimatch(file, "*.js", { matchBase: true })
+```
+
+### minimatch.filter(pattern, options)
+
+Returns a function that tests its
+supplied argument, suitable for use with `Array.filter`.  Example:
+
+```javascript
+var javascripts = fileList.filter(minimatch.filter("*.js", {matchBase: true}))
+```
+
+### minimatch.match(list, pattern, options)
+
+Match against the list of
+files, in the style of fnmatch or glob.  If nothing is matched, and
+options.nonull is set, then return a list containing the pattern itself.
+
+```javascript
+var javascripts = minimatch.match(fileList, "*.js", {matchBase: true}))
+```
+
+### minimatch.makeRe(pattern, options)
+
+Make a regular expression object from the pattern.
+
+## Options
+
+All options are `false` by default.
+
+### debug
+
+Dump a ton of stuff to stderr.
+
+### nobrace
+
+Do not expand `{a,b}` and `{1..3}` brace sets.
+
+### noglobstar
+
+Disable `**` matching against multiple folder names.
+
+### dot
+
+Allow patterns to match filenames starting with a period, even if
+the pattern does not explicitly have a period in that spot.
+
+Note that by default, `a/**/b` will **not** match `a/.d/b`, unless `dot`
+is set.
+
+### noext
+
+Disable "extglob" style patterns like `+(a|b)`.
+
+### nocase
+
+Perform a case-insensitive match.
+
+### nonull
+
+When a match is not found by `minimatch.match`, return a list containing
+the pattern itself if this option is set.  When not set, an empty list
+is returned if there are no matches.
+
+### matchBase
+
+If set, then patterns without slashes will be matched
+against the basename of the path if it contains slashes.  For example,
+`a?b` would match the path `/xyz/123/acb`, but not `/xyz/acb/123`.
+
+### nocomment
+
+Suppress the behavior of treating `#` at the start of a pattern as a
+comment.
+
+### nonegate
+
+Suppress the behavior of treating a leading `!` character as negation.
+
+### flipNegate
+
+Returns from negate expressions the same as if they were not negated.
+(Ie, true on a hit, false on a miss.)
+
+
+## Comparisons to other fnmatch/glob implementations
+
+While strict compliance with the existing standards is a worthwhile
+goal, some discrepancies exist between minimatch and other
+implementations, and are intentional.
+
+If the pattern starts with a `!` character, then it is negated.  Set the
+`nonegate` flag to suppress this behavior, and treat leading `!`
+characters normally.  This is perhaps relevant if you wish to start the
+pattern with a negative extglob pattern like `!(a|B)`.  Multiple `!`
+characters at the start of a pattern will negate the pattern multiple
+times.
+
+If a pattern starts with `#`, then it is treated as a comment, and
+will not match anything.  Use `\#` to match a literal `#` at the
+start of a line, or set the `nocomment` flag to suppress this behavior.
+
+The double-star character `**` is supported by default, unless the
+`noglobstar` flag is set.  This is supported in the manner of bsdglob
+and bash 4.1, where `**` only has special significance if it is the only
+thing in a path part.  That is, `a/**/b` will match `a/x/y/b`, but
+`a/**b` will not.
+
+If an escaped pattern has no matches, and the `nonull` flag is set,
+then minimatch.match returns the pattern as-provided, rather than
+interpreting the character escapes.  For example,
+`minimatch.match([], "\\*a\\?")` will return `"\\*a\\?"` rather than
+`"*a?"`.  This is akin to setting the `nullglob` option in bash, except
+that it does not resolve escaped pattern characters.
+
+If brace expansion is not disabled, then it is performed before any
+other interpretation of the glob pattern.  Thus, a pattern like
+`+(a|{b),c)}`, which would not be valid in bash or zsh, is expanded
+**first** into the set of `+(a|b)` and `+(a|c)`, and those patterns are
+checked for validity.  Since those two are valid, matching proceeds.
diff --git a/stdlib/nodejs/node_modules/minimatch/minimatch.js b/stdlib/nodejs/node_modules/minimatch/minimatch.js
new file mode 100644
index 00000000..5b5f8cf4
--- /dev/null
+++ b/stdlib/nodejs/node_modules/minimatch/minimatch.js
@@ -0,0 +1,923 @@
+module.exports = minimatch
+minimatch.Minimatch = Minimatch
+
+var path = { sep: '/' }
+try {
+  path = require('path')
+} catch (er) {}
+
+var GLOBSTAR = minimatch.GLOBSTAR = Minimatch.GLOBSTAR = {}
+var expand = require('brace-expansion')
+
+var plTypes = {
+  '!': { open: '(?:(?!(?:', close: '))[^/]*?)'},
+  '?': { open: '(?:', close: ')?' },
+  '+': { open: '(?:', close: ')+' },
+  '*': { open: '(?:', close: ')*' },
+  '@': { open: '(?:', close: ')' }
+}
+
+// any single thing other than /
+// don't need to escape / when using new RegExp()
+var qmark = '[^/]'
+
+// * => any number of characters
+var star = qmark + '*?'
+
+// ** when dots are allowed.  Anything goes, except .. and .
+// not (^ or / followed by one or two dots followed by $ or /),
+// followed by anything, any number of times.
+var twoStarDot = '(?:(?!(?:\\\/|^)(?:\\.{1,2})($|\\\/)).)*?'
+
+// not a ^ or / followed by a dot,
+// followed by anything, any number of times.
+var twoStarNoDot = '(?:(?!(?:\\\/|^)\\.).)*?'
+
+// characters that need to be escaped in RegExp.
+var reSpecials = charSet('().*{}+?[]^$\\!')
+
+// "abc" -> { a:true, b:true, c:true }
+function charSet (s) {
+  return s.split('').reduce(function (set, c) {
+    set[c] = true
+    return set
+  }, {})
+}
+
+// normalizes slashes.
+var slashSplit = /\/+/
+
+minimatch.filter = filter
+function filter (pattern, options) {
+  options = options || {}
+  return function (p, i, list) {
+    return minimatch(p, pattern, options)
+  }
+}
+
+function ext (a, b) {
+  a = a || {}
+  b = b || {}
+  var t = {}
+  Object.keys(b).forEach(function (k) {
+    t[k] = b[k]
+  })
+  Object.keys(a).forEach(function (k) {
+    t[k] = a[k]
+  })
+  return t
+}
+
+minimatch.defaults = function (def) {
+  if (!def || !Object.keys(def).length) return minimatch
+
+  var orig = minimatch
+
+  var m = function minimatch (p, pattern, options) {
+    return orig.minimatch(p, pattern, ext(def, options))
+  }
+
+  m.Minimatch = function Minimatch (pattern, options) {
+    return new orig.Minimatch(pattern, ext(def, options))
+  }
+
+  return m
+}
+
+Minimatch.defaults = function (def) {
+  if (!def || !Object.keys(def).length) return Minimatch
+  return minimatch.defaults(def).Minimatch
+}
+
+function minimatch (p, pattern, options) {
+  if (typeof pattern !== 'string') {
+    throw new TypeError('glob pattern string required')
+  }
+
+  if (!options) options = {}
+
+  // shortcut: comments match nothing.
+  if (!options.nocomment && pattern.charAt(0) === '#') {
+    return false
+  }
+
+  // "" only matches ""
+  if (pattern.trim() === '') return p === ''
+
+  return new Minimatch(pattern, options).match(p)
+}
+
+function Minimatch (pattern, options) {
+  if (!(this instanceof Minimatch)) {
+    return new Minimatch(pattern, options)
+  }
+
+  if (typeof pattern !== 'string') {
+    throw new TypeError('glob pattern string required')
+  }
+
+  if (!options) options = {}
+  pattern = pattern.trim()
+
+  // windows support: need to use /, not \
+  if (path.sep !== '/') {
+    pattern = pattern.split(path.sep).join('/')
+  }
+
+  this.options = options
+  this.set = []
+  this.pattern = pattern
+  this.regexp = null
+  this.negate = false
+  this.comment = false
+  this.empty = false
+
+  // make the set of regexps etc.
+  this.make()
+}
+
+Minimatch.prototype.debug = function () {}
+
+Minimatch.prototype.make = make
+function make () {
+  // don't do it more than once.
+  if (this._made) return
+
+  var pattern = this.pattern
+  var options = this.options
+
+  // empty patterns and comments match nothing.
+  if (!options.nocomment && pattern.charAt(0) === '#') {
+    this.comment = true
+    return
+  }
+  if (!pattern) {
+    this.empty = true
+    return
+  }
+
+  // step 1: figure out negation, etc.
+  this.parseNegate()
+
+  // step 2: expand braces
+  var set = this.globSet = this.braceExpand()
+
+  if (options.debug) this.debug = console.error
+
+  this.debug(this.pattern, set)
+
+  // step 3: now we have a set, so turn each one into a series of path-portion
+  // matching patterns.
+  // These will be regexps, except in the case of "**", which is
+  // set to the GLOBSTAR object for globstar behavior,
+  // and will not contain any / characters
+  set = this.globParts = set.map(function (s) {
+    return s.split(slashSplit)
+  })
+
+  this.debug(this.pattern, set)
+
+  // glob --> regexps
+  set = set.map(function (s, si, set) {
+    return s.map(this.parse, this)
+  }, this)
+
+  this.debug(this.pattern, set)
+
+  // filter out everything that didn't compile properly.
+  set = set.filter(function (s) {
+    return s.indexOf(false) === -1
+  })
+
+  this.debug(this.pattern, set)
+
+  this.set = set
+}
+
+Minimatch.prototype.parseNegate = parseNegate
+function parseNegate () {
+  var pattern = this.pattern
+  var negate = false
+  var options = this.options
+  var negateOffset = 0
+
+  if (options.nonegate) return
+
+  for (var i = 0, l = pattern.length
+    ; i < l && pattern.charAt(i) === '!'
+    ; i++) {
+    negate = !negate
+    negateOffset++
+  }
+
+  if (negateOffset) this.pattern = pattern.substr(negateOffset)
+  this.negate = negate
+}
+
+// Brace expansion:
+// a{b,c}d -> abd acd
+// a{b,}c -> abc ac
+// a{0..3}d -> a0d a1d a2d a3d
+// a{b,c{d,e}f}g -> abg acdfg acefg
+// a{b,c}d{e,f}g -> abdeg acdeg abdeg abdfg
+//
+// Invalid sets are not expanded.
+// a{2..}b -> a{2..}b
+// a{b}c -> a{b}c
+minimatch.braceExpand = function (pattern, options) {
+  return braceExpand(pattern, options)
+}
+
+Minimatch.prototype.braceExpand = braceExpand
+
+function braceExpand (pattern, options) {
+  if (!options) {
+    if (this instanceof Minimatch) {
+      options = this.options
+    } else {
+      options = {}
+    }
+  }
+
+  pattern = typeof pattern === 'undefined'
+    ? this.pattern : pattern
+
+  if (typeof pattern === 'undefined') {
+    throw new TypeError('undefined pattern')
+  }
+
+  if (options.nobrace ||
+    !pattern.match(/\{.*\}/)) {
+    // shortcut. no need to expand.
+    return [pattern]
+  }
+
+  return expand(pattern)
+}
+
+// parse a component of the expanded set.
+// At this point, no pattern may contain "/" in it
+// so we're going to return a 2d array, where each entry is the full
+// pattern, split on '/', and then turned into a regular expression.
+// A regexp is made at the end which joins each array with an
+// escaped /, and another full one which joins each regexp with |.
+//
+// Following the lead of Bash 4.1, note that "**" only has special meaning
+// when it is the *only* thing in a path portion.  Otherwise, any series
+// of * is equivalent to a single *.  Globstar behavior is enabled by
+// default, and can be disabled by setting options.noglobstar.
+Minimatch.prototype.parse = parse
+var SUBPARSE = {}
+function parse (pattern, isSub) {
+  if (pattern.length > 1024 * 64) {
+    throw new TypeError('pattern is too long')
+  }
+
+  var options = this.options
+
+  // shortcuts
+  if (!options.noglobstar && pattern === '**') return GLOBSTAR
+  if (pattern === '') return ''
+
+  var re = ''
+  var hasMagic = !!options.nocase
+  var escaping = false
+  // ? => one single character
+  var patternListStack = []
+  var negativeLists = []
+  var stateChar
+  var inClass = false
+  var reClassStart = -1
+  var classStart = -1
+  // . and .. never match anything that doesn't start with .,
+  // even when options.dot is set.
+  var patternStart = pattern.charAt(0) === '.' ? '' // anything
+  // not (start or / followed by . or .. followed by / or end)
+  : options.dot ? '(?!(?:^|\\\/)\\.{1,2}(?:$|\\\/))'
+  : '(?!\\.)'
+  var self = this
+
+  function clearStateChar () {
+    if (stateChar) {
+      // we had some state-tracking character
+      // that wasn't consumed by this pass.
+      switch (stateChar) {
+        case '*':
+          re += star
+          hasMagic = true
+        break
+        case '?':
+          re += qmark
+          hasMagic = true
+        break
+        default:
+          re += '\\' + stateChar
+        break
+      }
+      self.debug('clearStateChar %j %j', stateChar, re)
+      stateChar = false
+    }
+  }
+
+  for (var i = 0, len = pattern.length, c
+    ; (i < len) && (c = pattern.charAt(i))
+    ; i++) {
+    this.debug('%s\t%s %s %j', pattern, i, re, c)
+
+    // skip over any that are escaped.
+    if (escaping && reSpecials[c]) {
+      re += '\\' + c
+      escaping = false
+      continue
+    }
+
+    switch (c) {
+      case '/':
+        // completely not allowed, even escaped.
+        // Should already be path-split by now.
+        return false
+
+      case '\\':
+        clearStateChar()
+        escaping = true
+      continue
+
+      // the various stateChar values
+      // for the "extglob" stuff.
+      case '?':
+      case '*':
+      case '+':
+      case '@':
+      case '!':
+        this.debug('%s\t%s %s %j <-- stateChar', pattern, i, re, c)
+
+        // all of those are literals inside a class, except that
+        // the glob [!a] means [^a] in regexp
+        if (inClass) {
+          this.debug('  in class')
+          if (c === '!' && i === classStart + 1) c = '^'
+          re += c
+          continue
+        }
+
+        // if we already have a stateChar, then it means
+        // that there was something like ** or +? in there.
+        // Handle the stateChar, then proceed with this one.
+        self.debug('call clearStateChar %j', stateChar)
+        clearStateChar()
+        stateChar = c
+        // if extglob is disabled, then +(asdf|foo) isn't a thing.
+        // just clear the statechar *now*, rather than even diving into
+        // the patternList stuff.
+        if (options.noext) clearStateChar()
+      continue
+
+      case '(':
+        if (inClass) {
+          re += '('
+          continue
+        }
+
+        if (!stateChar) {
+          re += '\\('
+          continue
+        }
+
+        patternListStack.push({
+          type: stateChar,
+          start: i - 1,
+          reStart: re.length,
+          open: plTypes[stateChar].open,
+          close: plTypes[stateChar].close
+        })
+        // negation is (?:(?!js)[^/]*)
+        re += stateChar === '!' ? '(?:(?!(?:' : '(?:'
+        this.debug('plType %j %j', stateChar, re)
+        stateChar = false
+      continue
+
+      case ')':
+        if (inClass || !patternListStack.length) {
+          re += '\\)'
+          continue
+        }
+
+        clearStateChar()
+        hasMagic = true
+        var pl = patternListStack.pop()
+        // negation is (?:(?!js)[^/]*)
+        // The others are (?:<pattern>)<type>
+        re += pl.close
+        if (pl.type === '!') {
+          negativeLists.push(pl)
+        }
+        pl.reEnd = re.length
+      continue
+
+      case '|':
+        if (inClass || !patternListStack.length || escaping) {
+          re += '\\|'
+          escaping = false
+          continue
+        }
+
+        clearStateChar()
+        re += '|'
+      continue
+
+      // these are mostly the same in regexp and glob
+      case '[':
+        // swallow any state-tracking char before the [
+        clearStateChar()
+
+        if (inClass) {
+          re += '\\' + c
+          continue
+        }
+
+        inClass = true
+        classStart = i
+        reClassStart = re.length
+        re += c
+      continue
+
+      case ']':
+        //  a right bracket shall lose its special
+        //  meaning and represent itself in
+        //  a bracket expression if it occurs
+        //  first in the list.  -- POSIX.2 2.8.3.2
+        if (i === classStart + 1 || !inClass) {
+          re += '\\' + c
+          escaping = false
+          continue
+        }
+
+        // handle the case where we left a class open.
+        // "[z-a]" is valid, equivalent to "\[z-a\]"
+        if (inClass) {
+          // split where the last [ was, make sure we don't have
+          // an invalid re. if so, re-walk the contents of the
+          // would-be class to re-translate any characters that
+          // were passed through as-is
+          // TODO: It would probably be faster to determine this
+          // without a try/catch and a new RegExp, but it's tricky
+          // to do safely.  For now, this is safe and works.
+          var cs = pattern.substring(classStart + 1, i)
+          try {
+            RegExp('[' + cs + ']')
+          } catch (er) {
+            // not a valid class!
+            var sp = this.parse(cs, SUBPARSE)
+            re = re.substr(0, reClassStart) + '\\[' + sp[0] + '\\]'
+            hasMagic = hasMagic || sp[1]
+            inClass = false
+            continue
+          }
+        }
+
+        // finish up the class.
+        hasMagic = true
+        inClass = false
+        re += c
+      continue
+
+      default:
+        // swallow any state char that wasn't consumed
+        clearStateChar()
+
+        if (escaping) {
+          // no need
+          escaping = false
+        } else if (reSpecials[c]
+          && !(c === '^' && inClass)) {
+          re += '\\'
+        }
+
+        re += c
+
+    } // switch
+  } // for
+
+  // handle the case where we left a class open.
+  // "[abc" is valid, equivalent to "\[abc"
+  if (inClass) {
+    // split where the last [ was, and escape it
+    // this is a huge pita.  We now have to re-walk
+    // the contents of the would-be class to re-translate
+    // any characters that were passed through as-is
+    cs = pattern.substr(classStart + 1)
+    sp = this.parse(cs, SUBPARSE)
+    re = re.substr(0, reClassStart) + '\\[' + sp[0]
+    hasMagic = hasMagic || sp[1]
+  }
+
+  // handle the case where we had a +( thing at the *end*
+  // of the pattern.
+  // each pattern list stack adds 3 chars, and we need to go through
+  // and escape any | chars that were passed through as-is for the regexp.
+  // Go through and escape them, taking care not to double-escape any
+  // | chars that were already escaped.
+  for (pl = patternListStack.pop(); pl; pl = patternListStack.pop()) {
+    var tail = re.slice(pl.reStart + pl.open.length)
+    this.debug('setting tail', re, pl)
+    // maybe some even number of \, then maybe 1 \, followed by a |
+    tail = tail.replace(/((?:\\{2}){0,64})(\\?)\|/g, function (_, $1, $2) {
+      if (!$2) {
+        // the | isn't already escaped, so escape it.
+        $2 = '\\'
+      }
+
+      // need to escape all those slashes *again*, without escaping the
+      // one that we need for escaping the | character.  As it works out,
+      // escaping an even number of slashes can be done by simply repeating
+      // it exactly after itself.  That's why this trick works.
+      //
+      // I am sorry that you have to see this.
+      return $1 + $1 + $2 + '|'
+    })
+
+    this.debug('tail=%j\n   %s', tail, tail, pl, re)
+    var t = pl.type === '*' ? star
+      : pl.type === '?' ? qmark
+      : '\\' + pl.type
+
+    hasMagic = true
+    re = re.slice(0, pl.reStart) + t + '\\(' + tail
+  }
+
+  // handle trailing things that only matter at the very end.
+  clearStateChar()
+  if (escaping) {
+    // trailing \\
+    re += '\\\\'
+  }
+
+  // only need to apply the nodot start if the re starts with
+  // something that could conceivably capture a dot
+  var addPatternStart = false
+  switch (re.charAt(0)) {
+    case '.':
+    case '[':
+    case '(': addPatternStart = true
+  }
+
+  // Hack to work around lack of negative lookbehind in JS
+  // A pattern like: *.!(x).!(y|z) needs to ensure that a name
+  // like 'a.xyz.yz' doesn't match.  So, the first negative
+  // lookahead, has to look ALL the way ahead, to the end of
+  // the pattern.
+  for (var n = negativeLists.length - 1; n > -1; n--) {
+    var nl = negativeLists[n]
+
+    var nlBefore = re.slice(0, nl.reStart)
+    var nlFirst = re.slice(nl.reStart, nl.reEnd - 8)
+    var nlLast = re.slice(nl.reEnd - 8, nl.reEnd)
+    var nlAfter = re.slice(nl.reEnd)
+
+    nlLast += nlAfter
+
+    // Handle nested stuff like *(*.js|!(*.json)), where open parens
+    // mean that we should *not* include the ) in the bit that is considered
+    // "after" the negated section.
+    var openParensBefore = nlBefore.split('(').length - 1
+    var cleanAfter = nlAfter
+    for (i = 0; i < openParensBefore; i++) {
+      cleanAfter = cleanAfter.replace(/\)[+*?]?/, '')
+    }
+    nlAfter = cleanAfter
+
+    var dollar = ''
+    if (nlAfter === '' && isSub !== SUBPARSE) {
+      dollar = '$'
+    }
+    var newRe = nlBefore + nlFirst + nlAfter + dollar + nlLast
+    re = newRe
+  }
+
+  // if the re is not "" at this point, then we need to make sure
+  // it doesn't match against an empty path part.
+  // Otherwise a/* will match a/, which it should not.
+  if (re !== '' && hasMagic) {
+    re = '(?=.)' + re
+  }
+
+  if (addPatternStart) {
+    re = patternStart + re
+  }
+
+  // parsing just a piece of a larger pattern.
+  if (isSub === SUBPARSE) {
+    return [re, hasMagic]
+  }
+
+  // skip the regexp for non-magical patterns
+  // unescape anything in it, though, so that it'll be
+  // an exact match against a file etc.
+  if (!hasMagic) {
+    return globUnescape(pattern)
+  }
+
+  var flags = options.nocase ? 'i' : ''
+  try {
+    var regExp = new RegExp('^' + re + '$', flags)
+  } catch (er) {
+    // If it was an invalid regular expression, then it can't match
+    // anything.  This trick looks for a character after the end of
+    // the string, which is of course impossible, except in multi-line
+    // mode, but it's not a /m regex.
+    return new RegExp('$.')
+  }
+
+  regExp._glob = pattern
+  regExp._src = re
+
+  return regExp
+}
+
+minimatch.makeRe = function (pattern, options) {
+  return new Minimatch(pattern, options || {}).makeRe()
+}
+
+Minimatch.prototype.makeRe = makeRe
+function makeRe () {
+  if (this.regexp || this.regexp === false) return this.regexp
+
+  // at this point, this.set is a 2d array of partial
+  // pattern strings, or "**".
+  //
+  // It's better to use .match().  This function shouldn't
+  // be used, really, but it's pretty convenient sometimes,
+  // when you just want to work with a regex.
+  var set = this.set
+
+  if (!set.length) {
+    this.regexp = false
+    return this.regexp
+  }
+  var options = this.options
+
+  var twoStar = options.noglobstar ? star
+    : options.dot ? twoStarDot
+    : twoStarNoDot
+  var flags = options.nocase ? 'i' : ''
+
+  var re = set.map(function (pattern) {
+    return pattern.map(function (p) {
+      return (p === GLOBSTAR) ? twoStar
+      : (typeof p === 'string') ? regExpEscape(p)
+      : p._src
+    }).join('\\\/')
+  }).join('|')
+
+  // must match entire pattern
+  // ending in a * or ** will make it less strict.
+  re = '^(?:' + re + ')$'
+
+  // can match anything, as long as it's not this.
+  if (this.negate) re = '^(?!' + re + ').*$'
+
+  try {
+    this.regexp = new RegExp(re, flags)
+  } catch (ex) {
+    this.regexp = false
+  }
+  return this.regexp
+}
+
+minimatch.match = function (list, pattern, options) {
+  options = options || {}
+  var mm = new Minimatch(pattern, options)
+  list = list.filter(function (f) {
+    return mm.match(f)
+  })
+  if (mm.options.nonull && !list.length) {
+    list.push(pattern)
+  }
+  return list
+}
+
+Minimatch.prototype.match = match
+function match (f, partial) {
+  this.debug('match', f, this.pattern)
+  // short-circuit in the case of busted things.
+  // comments, etc.
+  if (this.comment) return false
+  if (this.empty) return f === ''
+
+  if (f === '/' && partial) return true
+
+  var options = this.options
+
+  // windows: need to use /, not \
+  if (path.sep !== '/') {
+    f = f.split(path.sep).join('/')
+  }
+
+  // treat the test path as a set of pathparts.
+  f = f.split(slashSplit)
+  this.debug(this.pattern, 'split', f)
+
+  // just ONE of the pattern sets in this.set needs to match
+  // in order for it to be valid.  If negating, then just one
+  // match means that we have failed.
+  // Either way, return on the first hit.
+
+  var set = this.set
+  this.debug(this.pattern, 'set', set)
+
+  // Find the basename of the path by looking for the last non-empty segment
+  var filename
+  var i
+  for (i = f.length - 1; i >= 0; i--) {
+    filename = f[i]
+    if (filename) break
+  }
+
+  for (i = 0; i < set.length; i++) {
+    var pattern = set[i]
+    var file = f
+    if (options.matchBase && pattern.length === 1) {
+      file = [filename]
+    }
+    var hit = this.matchOne(file, pattern, partial)
+    if (hit) {
+      if (options.flipNegate) return true
+      return !this.negate
+    }
+  }
+
+  // didn't get any hits.  this is success if it's a negative
+  // pattern, failure otherwise.
+  if (options.flipNegate) return false
+  return this.negate
+}
+
+// set partial to true to test if, for example,
+// "/a/b" matches the start of "/*/b/*/d"
+// Partial means, if you run out of file before you run
+// out of pattern, then that's fine, as long as all
+// the parts match.
+Minimatch.prototype.matchOne = function (file, pattern, partial) {
+  var options = this.options
+
+  this.debug('matchOne',
+    { 'this': this, file: file, pattern: pattern })
+
+  this.debug('matchOne', file.length, pattern.length)
+
+  for (var fi = 0,
+      pi = 0,
+      fl = file.length,
+      pl = pattern.length
+      ; (fi < fl) && (pi < pl)
+      ; fi++, pi++) {
+    this.debug('matchOne loop')
+    var p = pattern[pi]
+    var f = file[fi]
+
+    this.debug(pattern, p, f)
+
+    // should be impossible.
+    // some invalid regexp stuff in the set.
+    if (p === false) return false
+
+    if (p === GLOBSTAR) {
+      this.debug('GLOBSTAR', [pattern, p, f])
+
+      // "**"
+      // a/**/b/**/c would match the following:
+      // a/b/x/y/z/c
+      // a/x/y/z/b/c
+      // a/b/x/b/x/c
+      // a/b/c
+      // To do this, take the rest of the pattern after
+      // the **, and see if it would match the file remainder.
+      // If so, return success.
+      // If not, the ** "swallows" a segment, and try again.
+      // This is recursively awful.
+      //
+      // a/**/b/**/c matching a/b/x/y/z/c
+      // - a matches a
+      // - doublestar
+      //   - matchOne(b/x/y/z/c, b/**/c)
+      //     - b matches b
+      //     - doublestar
+      //       - matchOne(x/y/z/c, c) -> no
+      //       - matchOne(y/z/c, c) -> no
+      //       - matchOne(z/c, c) -> no
+      //       - matchOne(c, c) yes, hit
+      var fr = fi
+      var pr = pi + 1
+      if (pr === pl) {
+        this.debug('** at the end')
+        // a ** at the end will just swallow the rest.
+        // We have found a match.
+        // however, it will not swallow /.x, unless
+        // options.dot is set.
+        // . and .. are *never* matched by **, for explosively
+        // exponential reasons.
+        for (; fi < fl; fi++) {
+          if (file[fi] === '.' || file[fi] === '..' ||
+            (!options.dot && file[fi].charAt(0) === '.')) return false
+        }
+        return true
+      }
+
+      // ok, let's see if we can swallow whatever we can.
+      while (fr < fl) {
+        var swallowee = file[fr]
+
+        this.debug('\nglobstar while', file, fr, pattern, pr, swallowee)
+
+        // XXX remove this slice.  Just pass the start index.
+        if (this.matchOne(file.slice(fr), pattern.slice(pr), partial)) {
+          this.debug('globstar found match!', fr, fl, swallowee)
+          // found a match.
+          return true
+        } else {
+          // can't swallow "." or ".." ever.
+          // can only swallow ".foo" when explicitly asked.
+          if (swallowee === '.' || swallowee === '..' ||
+            (!options.dot && swallowee.charAt(0) === '.')) {
+            this.debug('dot detected!', file, fr, pattern, pr)
+            break
+          }
+
+          // ** swallows a segment, and continue.
+          this.debug('globstar swallow a segment, and continue')
+          fr++
+        }
+      }
+
+      // no match was found.
+      // However, in partial mode, we can't say this is necessarily over.
+      // If there's more *pattern* left, then
+      if (partial) {
+        // ran out of file
+        this.debug('\n>>> no match, partial?', file, fr, pattern, pr)
+        if (fr === fl) return true
+      }
+      return false
+    }
+
+    // something other than **
+    // non-magic patterns just have to match exactly
+    // patterns with magic have been turned into regexps.
+    var hit
+    if (typeof p === 'string') {
+      if (options.nocase) {
+        hit = f.toLowerCase() === p.toLowerCase()
+      } else {
+        hit = f === p
+      }
+      this.debug('string match', p, f, hit)
+    } else {
+      hit = f.match(p)
+      this.debug('pattern match', p, f, hit)
+    }
+
+    if (!hit) return false
+  }
+
+  // Note: ending in / means that we'll get a final ""
+  // at the end of the pattern.  This can only match a
+  // corresponding "" at the end of the file.
+  // If the file ends in /, then it can only match a
+  // a pattern that ends in /, unless the pattern just
+  // doesn't have any more for it. But, a/b/ should *not*
+  // match "a/b/*", even though "" matches against the
+  // [^/]*? pattern, except in partial mode, where it might
+  // simply not be reached yet.
+  // However, a/b/ should still satisfy a/*
+
+  // now either we fell off the end of the pattern, or we're done.
+  if (fi === fl && pi === pl) {
+    // ran out of pattern and filename at the same time.
+    // an exact hit!
+    return true
+  } else if (fi === fl) {
+    // ran out of file, but still had pattern left.
+    // this is ok if we're doing the match as part of
+    // a glob fs traversal.
+    return partial
+  } else if (pi === pl) {
+    // ran out of pattern, still have file left.
+    // this is only acceptable if we're on the very last
+    // empty segment of a file with a trailing slash.
+    // a/* should match a/b/
+    var emptyFileEnd = (fi === fl - 1) && (file[fi] === '')
+    return emptyFileEnd
+  }
+
+  // should be unreachable.
+  throw new Error('wtf?')
+}
+
+// replace stuff like \* with *
+function globUnescape (s) {
+  return s.replace(/\\(.)/g, '$1')
+}
+
+function regExpEscape (s) {
+  return s.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, '\\$&')
+}
diff --git a/stdlib/nodejs/node_modules/minimatch/package.json b/stdlib/nodejs/node_modules/minimatch/package.json
new file mode 100644
index 00000000..e75a402d
--- /dev/null
+++ b/stdlib/nodejs/node_modules/minimatch/package.json
@@ -0,0 +1,63 @@
+{
+  "_from": "minimatch@^3.0.4",
+  "_id": "minimatch@3.0.4",
+  "_inBundle": false,
+  "_integrity": "sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==",
+  "_location": "/minimatch",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "range",
+    "registry": true,
+    "raw": "minimatch@^3.0.4",
+    "name": "minimatch",
+    "escapedName": "minimatch",
+    "rawSpec": "^3.0.4",
+    "saveSpec": null,
+    "fetchSpec": "^3.0.4"
+  },
+  "_requiredBy": [
+    "/glob"
+  ],
+  "_resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",
+  "_shasum": "5166e286457f03306064be5497e8dbb0c3d32083",
+  "_spec": "minimatch@^3.0.4",
+  "_where": "/home/guillaume/workspace/opensource/opal/opal/stdlib/nodejs/node_modules/glob",
+  "author": {
+    "name": "Isaac Z. Schlueter",
+    "email": "i@izs.me",
+    "url": "http://blog.izs.me"
+  },
+  "bugs": {
+    "url": "https://github.com/isaacs/minimatch/issues"
+  },
+  "bundleDependencies": false,
+  "dependencies": {
+    "brace-expansion": "^1.1.7"
+  },
+  "deprecated": false,
+  "description": "a glob matcher in javascript",
+  "devDependencies": {
+    "tap": "^10.3.2"
+  },
+  "engines": {
+    "node": "*"
+  },
+  "files": [
+    "minimatch.js"
+  ],
+  "homepage": "https://github.com/isaacs/minimatch#readme",
+  "license": "ISC",
+  "main": "minimatch.js",
+  "name": "minimatch",
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/isaacs/minimatch.git"
+  },
+  "scripts": {
+    "postpublish": "git push origin --all; git push origin --tags",
+    "postversion": "npm publish",
+    "preversion": "npm test",
+    "test": "tap test/*.js --cov"
+  },
+  "version": "3.0.4"
+}
diff --git a/stdlib/nodejs/node_modules/once/LICENSE b/stdlib/nodejs/node_modules/once/LICENSE
new file mode 100644
index 00000000..19129e31
--- /dev/null
+++ b/stdlib/nodejs/node_modules/once/LICENSE
@@ -0,0 +1,15 @@
+The ISC License
+
+Copyright (c) Isaac Z. Schlueter and Contributors
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
diff --git a/stdlib/nodejs/node_modules/once/README.md b/stdlib/nodejs/node_modules/once/README.md
new file mode 100644
index 00000000..1f1ffca9
--- /dev/null
+++ b/stdlib/nodejs/node_modules/once/README.md
@@ -0,0 +1,79 @@
+# once
+
+Only call a function once.
+
+## usage
+
+```javascript
+var once = require('once')
+
+function load (file, cb) {
+  cb = once(cb)
+  loader.load('file')
+  loader.once('load', cb)
+  loader.once('error', cb)
+}
+```
+
+Or add to the Function.prototype in a responsible way:
+
+```javascript
+// only has to be done once
+require('once').proto()
+
+function load (file, cb) {
+  cb = cb.once()
+  loader.load('file')
+  loader.once('load', cb)
+  loader.once('error', cb)
+}
+```
+
+Ironically, the prototype feature makes this module twice as
+complicated as necessary.
+
+To check whether you function has been called, use `fn.called`. Once the
+function is called for the first time the return value of the original
+function is saved in `fn.value` and subsequent calls will continue to
+return this value.
+
+```javascript
+var once = require('once')
+
+function load (cb) {
+  cb = once(cb)
+  var stream = createStream()
+  stream.once('data', cb)
+  stream.once('end', function () {
+    if (!cb.called) cb(new Error('not found'))
+  })
+}
+```
+
+## `once.strict(func)`
+
+Throw an error if the function is called twice.
+
+Some functions are expected to be called only once. Using `once` for them would
+potentially hide logical errors.
+
+In the example below, the `greet` function has to call the callback only once:
+
+```javascript
+function greet (name, cb) {
+  // return is missing from the if statement
+  // when no name is passed, the callback is called twice
+  if (!name) cb('Hello anonymous')
+  cb('Hello ' + name)
+}
+
+function log (msg) {
+  console.log(msg)
+}
+
+// this will print 'Hello anonymous' but the logical error will be missed
+greet(null, once(msg))
+
+// once.strict will print 'Hello anonymous' and throw an error when the callback will be called the second time
+greet(null, once.strict(msg))
+```
diff --git a/stdlib/nodejs/node_modules/once/once.js b/stdlib/nodejs/node_modules/once/once.js
new file mode 100644
index 00000000..23540673
--- /dev/null
+++ b/stdlib/nodejs/node_modules/once/once.js
@@ -0,0 +1,42 @@
+var wrappy = require('wrappy')
+module.exports = wrappy(once)
+module.exports.strict = wrappy(onceStrict)
+
+once.proto = once(function () {
+  Object.defineProperty(Function.prototype, 'once', {
+    value: function () {
+      return once(this)
+    },
+    configurable: true
+  })
+
+  Object.defineProperty(Function.prototype, 'onceStrict', {
+    value: function () {
+      return onceStrict(this)
+    },
+    configurable: true
+  })
+})
+
+function once (fn) {
+  var f = function () {
+    if (f.called) return f.value
+    f.called = true
+    return f.value = fn.apply(this, arguments)
+  }
+  f.called = false
+  return f
+}
+
+function onceStrict (fn) {
+  var f = function () {
+    if (f.called)
+      throw new Error(f.onceError)
+    f.called = true
+    return f.value = fn.apply(this, arguments)
+  }
+  var name = fn.name || 'Function wrapped with `once`'
+  f.onceError = name + " shouldn't be called more than once"
+  f.called = false
+  return f
+}
diff --git a/stdlib/nodejs/node_modules/once/package.json b/stdlib/nodejs/node_modules/once/package.json
new file mode 100644
index 00000000..3da59ea4
--- /dev/null
+++ b/stdlib/nodejs/node_modules/once/package.json
@@ -0,0 +1,67 @@
+{
+  "_from": "once@^1.3.0",
+  "_id": "once@1.4.0",
+  "_inBundle": false,
+  "_integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
+  "_location": "/once",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "range",
+    "registry": true,
+    "raw": "once@^1.3.0",
+    "name": "once",
+    "escapedName": "once",
+    "rawSpec": "^1.3.0",
+    "saveSpec": null,
+    "fetchSpec": "^1.3.0"
+  },
+  "_requiredBy": [
+    "/glob",
+    "/inflight"
+  ],
+  "_resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
+  "_shasum": "583b1aa775961d4b113ac17d9c50baef9dd76bd1",
+  "_spec": "once@^1.3.0",
+  "_where": "/home/guillaume/workspace/opensource/opal/opal/stdlib/nodejs/node_modules/glob",
+  "author": {
+    "name": "Isaac Z. Schlueter",
+    "email": "i@izs.me",
+    "url": "http://blog.izs.me/"
+  },
+  "bugs": {
+    "url": "https://github.com/isaacs/once/issues"
+  },
+  "bundleDependencies": false,
+  "dependencies": {
+    "wrappy": "1"
+  },
+  "deprecated": false,
+  "description": "Run a function exactly one time",
+  "devDependencies": {
+    "tap": "^7.0.1"
+  },
+  "directories": {
+    "test": "test"
+  },
+  "files": [
+    "once.js"
+  ],
+  "homepage": "https://github.com/isaacs/once#readme",
+  "keywords": [
+    "once",
+    "function",
+    "one",
+    "single"
+  ],
+  "license": "ISC",
+  "main": "once.js",
+  "name": "once",
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/isaacs/once.git"
+  },
+  "scripts": {
+    "test": "tap test/*.js"
+  },
+  "version": "1.4.0"
+}
diff --git a/stdlib/nodejs/node_modules/path-is-absolute/index.js b/stdlib/nodejs/node_modules/path-is-absolute/index.js
new file mode 100644
index 00000000..22aa6c35
--- /dev/null
+++ b/stdlib/nodejs/node_modules/path-is-absolute/index.js
@@ -0,0 +1,20 @@
+'use strict';
+
+function posix(path) {
+	return path.charAt(0) === '/';
+}
+
+function win32(path) {
+	// https://github.com/nodejs/node/blob/b3fcc245fb25539909ef1d5eaa01dbf92e168633/lib/path.js#L56
+	var splitDeviceRe = /^([a-zA-Z]:|[\\\/]{2}[^\\\/]+[\\\/]+[^\\\/]+)?([\\\/])?([\s\S]*?)$/;
+	var result = splitDeviceRe.exec(path);
+	var device = result[1] || '';
+	var isUnc = Boolean(device && device.charAt(1) !== ':');
+
+	// UNC paths are always absolute
+	return Boolean(result[2] || isUnc);
+}
+
+module.exports = process.platform === 'win32' ? win32 : posix;
+module.exports.posix = posix;
+module.exports.win32 = win32;
diff --git a/stdlib/nodejs/node_modules/path-is-absolute/license b/stdlib/nodejs/node_modules/path-is-absolute/license
new file mode 100644
index 00000000..654d0bfe
--- /dev/null
+++ b/stdlib/nodejs/node_modules/path-is-absolute/license
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/stdlib/nodejs/node_modules/path-is-absolute/package.json b/stdlib/nodejs/node_modules/path-is-absolute/package.json
new file mode 100644
index 00000000..1a6d355e
--- /dev/null
+++ b/stdlib/nodejs/node_modules/path-is-absolute/package.json
@@ -0,0 +1,75 @@
+{
+  "_from": "path-is-absolute@^1.0.0",
+  "_id": "path-is-absolute@1.0.1",
+  "_inBundle": false,
+  "_integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18=",
+  "_location": "/path-is-absolute",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "range",
+    "registry": true,
+    "raw": "path-is-absolute@^1.0.0",
+    "name": "path-is-absolute",
+    "escapedName": "path-is-absolute",
+    "rawSpec": "^1.0.0",
+    "saveSpec": null,
+    "fetchSpec": "^1.0.0"
+  },
+  "_requiredBy": [
+    "/glob"
+  ],
+  "_resolved": "http://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
+  "_shasum": "174b9268735534ffbc7ace6bf53a5a9e1b5c5f5f",
+  "_spec": "path-is-absolute@^1.0.0",
+  "_where": "/home/guillaume/workspace/opensource/opal/opal/stdlib/nodejs/node_modules/glob",
+  "author": {
+    "name": "Sindre Sorhus",
+    "email": "sindresorhus@gmail.com",
+    "url": "sindresorhus.com"
+  },
+  "bugs": {
+    "url": "https://github.com/sindresorhus/path-is-absolute/issues"
+  },
+  "bundleDependencies": false,
+  "deprecated": false,
+  "description": "Node.js 0.12 path.isAbsolute() ponyfill",
+  "devDependencies": {
+    "xo": "^0.16.0"
+  },
+  "engines": {
+    "node": ">=0.10.0"
+  },
+  "files": [
+    "index.js"
+  ],
+  "homepage": "https://github.com/sindresorhus/path-is-absolute#readme",
+  "keywords": [
+    "path",
+    "paths",
+    "file",
+    "dir",
+    "absolute",
+    "isabsolute",
+    "is-absolute",
+    "built-in",
+    "util",
+    "utils",
+    "core",
+    "ponyfill",
+    "polyfill",
+    "shim",
+    "is",
+    "detect",
+    "check"
+  ],
+  "license": "MIT",
+  "name": "path-is-absolute",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/sindresorhus/path-is-absolute.git"
+  },
+  "scripts": {
+    "test": "xo && node test.js"
+  },
+  "version": "1.0.1"
+}
diff --git a/stdlib/nodejs/node_modules/path-is-absolute/readme.md b/stdlib/nodejs/node_modules/path-is-absolute/readme.md
new file mode 100644
index 00000000..8dbdf5fc
--- /dev/null
+++ b/stdlib/nodejs/node_modules/path-is-absolute/readme.md
@@ -0,0 +1,59 @@
+# path-is-absolute [![Build Status](https://travis-ci.org/sindresorhus/path-is-absolute.svg?branch=master)](https://travis-ci.org/sindresorhus/path-is-absolute)
+
+> Node.js 0.12 [`path.isAbsolute()`](http://nodejs.org/api/path.html#path_path_isabsolute_path) [ponyfill](https://ponyfill.com)
+
+
+## Install
+
+```
+$ npm install --save path-is-absolute
+```
+
+
+## Usage
+
+```js
+const pathIsAbsolute = require('path-is-absolute');
+
+// Running on Linux
+pathIsAbsolute('/home/foo');
+//=> true
+pathIsAbsolute('C:/Users/foo');
+//=> false
+
+// Running on Windows
+pathIsAbsolute('C:/Users/foo');
+//=> true
+pathIsAbsolute('/home/foo');
+//=> false
+
+// Running on any OS
+pathIsAbsolute.posix('/home/foo');
+//=> true
+pathIsAbsolute.posix('C:/Users/foo');
+//=> false
+pathIsAbsolute.win32('C:/Users/foo');
+//=> true
+pathIsAbsolute.win32('/home/foo');
+//=> false
+```
+
+
+## API
+
+See the [`path.isAbsolute()` docs](http://nodejs.org/api/path.html#path_path_isabsolute_path).
+
+### pathIsAbsolute(path)
+
+### pathIsAbsolute.posix(path)
+
+POSIX specific version.
+
+### pathIsAbsolute.win32(path)
+
+Windows specific version.
+
+
+## License
+
+MIT © [Sindre Sorhus](https://sindresorhus.com)
diff --git a/stdlib/nodejs/node_modules/unxhr/LICENSE b/stdlib/nodejs/node_modules/unxhr/LICENSE
new file mode 100644
index 00000000..1c63271b
--- /dev/null
+++ b/stdlib/nodejs/node_modules/unxhr/LICENSE
@@ -0,0 +1,22 @@
+ Copyright (c) 2010 passive.ly LLC
+
+ Permission is hereby granted, free of charge, to any person
+ obtaining a copy of this software and associated documentation
+ files (the "Software"), to deal in the Software without
+ restriction, including without limitation the rights to use,
+ copy, modify, merge, publish, distribute, sublicense, and/or sell
+ copies of the Software, and to permit persons to whom the
+ Software is furnished to do so, subject to the following
+ conditions:
+
+ The above copyright notice and this permission notice shall be
+ included in all copies or substantial portions of the Software.
+
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ OTHER DEALINGS IN THE SOFTWARE.
diff --git a/stdlib/nodejs/node_modules/unxhr/README.md b/stdlib/nodejs/node_modules/unxhr/README.md
new file mode 100644
index 00000000..bc60ff40
--- /dev/null
+++ b/stdlib/nodejs/node_modules/unxhr/README.md
@@ -0,0 +1,41 @@
+> Synchronous and asynchronous XMLHttpRequest for Node
+
+[![Build Status: Linux](https://travis-ci.org/Mogztter/unxhr.svg?branch=master)](https://travis-ci.org/Mogztter/unxhr) [![install size](https://packagephobia.now.sh/badge?p=unxhr)](https://packagephobia.now.sh/result?p=unxhr)
+
+_unxhr_ is a tiny wrapper of the built-in `http` client to emulate the browser `XMLHttpRequest` object.
+
+**Important:** This library is a fork of [XMLHttpRequest](https://github.com/driverdan/node-XMLHttpRequest).
+It was created to be compliant with [XMLHttpRequest Level 2](http://www.w3.org/TR/XMLHttpRequest2/).
+
+## Highlights
+
+- Dependency free
+- Asynchronous and synchronous requests
+- `GET`, `POST`, `PUT`, and `DELETE` requests
+- Binary data using JavaScript typed arrays
+- Follows redirects
+- Handles `file://` protocol
+
+## Usage
+
+Here's how to include the module in your project and use as the browser-based XHR object.
+
+```js
+const XMLHttpRequest = require('unxhr').XMLHttpRequest
+const xhr = new XMLHttpRequest()
+```
+
+## Known Issues / Missing Features
+
+For a list of open issues or to report your own visit the [github issues page](https://github.com/Mogztter/unxhr/issues).
+
+* Local file access may have unexpected results for non-UTF8 files
+* Synchronous requests don't set headers properly
+* Synchronous requests freeze node while waiting for response (But that's what you want, right? Stick with async!).
+* Some events are missing, such as abort
+* Cookies aren't persisted between requests
+* Missing XML support
+
+## License
+
+MIT license. See LICENSE for full details.
diff --git a/stdlib/nodejs/node_modules/unxhr/lib/XMLHttpRequest.js b/stdlib/nodejs/node_modules/unxhr/lib/XMLHttpRequest.js
new file mode 100644
index 00000000..755d1d5f
--- /dev/null
+++ b/stdlib/nodejs/node_modules/unxhr/lib/XMLHttpRequest.js
@@ -0,0 +1,598 @@
+/**
+ * Wrapper for built-in http.js to emulate the browser XMLHttpRequest object.
+ *
+ * This can be used with JS designed for browsers to improve reuse of code and
+ * allow the use of existing libraries.
+ *
+ * Usage: include("XMLHttpRequest.js") and use XMLHttpRequest per W3C specs.
+ *
+ * @author Dan DeFelippi <dan@driverdan.com>
+ * @contributor David Ellis <d.f.ellis@ieee.org>
+ * @contributor Guillaume Grossetie <ggrossetie@yuzutech.fr>
+ * @license MIT
+ */
+const Url = require('url')
+const fs = require('fs')
+const path = require('path')
+
+exports.XMLHttpRequest = function () {
+  'use strict'
+
+  /**
+   * Private variables
+   */
+  const self = this
+  const http = require('http')
+  const https = require('https')
+
+  // Holds http.js objects
+  let request
+  let response
+
+  // Request settings
+  let settings = {}
+
+  // Disable header blacklist.
+  // Not part of XHR specs.
+  let disableHeaderCheck = false
+
+  // Set some default headers
+  const defaultHeaders = {
+    'User-Agent': 'node-XMLHttpRequest',
+    'Accept': '*/*'
+  }
+
+  let headers = {}
+  const headersCase = {}
+
+  // These headers are not user setable.
+  // The following are allowed but banned in the spec:
+  // * user-agent
+  const forbiddenRequestHeaders = [
+    'accept-charset',
+    'accept-encoding',
+    'access-control-request-headers',
+    'access-control-request-method',
+    'connection',
+    'content-length',
+    'content-transfer-encoding',
+    'cookie',
+    'cookie2',
+    'date',
+    'expect',
+    'host',
+    'keep-alive',
+    'origin',
+    'referer',
+    'te',
+    'trailer',
+    'transfer-encoding',
+    'upgrade',
+    'via'
+  ]
+
+  // These request methods are not allowed
+  const forbiddenRequestMethods = [
+    'TRACE',
+    'TRACK',
+    'CONNECT'
+  ]
+
+  // Send flag
+  let sendFlag = false
+  // Error flag, used when errors occur or abort is called
+  let errorFlag = false
+
+  // Event listeners
+  const listeners = {}
+
+  /**
+   * Constants
+   */
+
+  this.UNSENT = 0
+  this.OPENED = 1
+  this.HEADERS_RECEIVED = 2
+  this.LOADING = 3
+  this.DONE = 4
+
+  /**
+   * Public vars
+   */
+
+  // Current state
+  this.readyState = this.UNSENT
+
+  // default ready state change handler in case one is not set or is set late
+  this.onreadystatechange = null
+
+  // Result & response
+  this.responseText = ''
+  this.responseXML = ''
+  this.status = null
+  this.statusText = null
+
+  // Whether cross-site Access-Control requests should be made using
+  // credentials such as cookies or authorization headers
+  this.withCredentials = false
+  // "text", "arraybuffer", "blob", or "document", depending on your data needs.
+  // Note, setting xhr.responseType = '' (or omitting) will default the response to "text".
+  this.responseType = ''
+
+  /**
+   * Private methods
+   */
+
+  /**
+   * Check if the specified header is allowed.
+   *
+   * @param header - {string} Header to validate
+   * @return {boolean} - False if not allowed, otherwise true
+   */
+  const isAllowedHttpHeader = function (header) {
+    return disableHeaderCheck || (header && forbiddenRequestHeaders.indexOf(header.toLowerCase()) === -1)
+  }
+
+  /**
+   * Check if the specified method is allowed.
+   *
+   * @param method - {string}  Request method to validate
+   * @return {boolean} - False if not allowed, otherwise true
+   */
+  const isAllowedHttpMethod = function (method) {
+    return (method && forbiddenRequestMethods.indexOf(method) === -1)
+  }
+
+  /**
+   * Public methods
+   */
+
+  /**
+   * Open the connection. Currently supports local server requests.
+   *
+   * @param method - {string} Connection method (eg GET, POST)
+   * @param url - {string} URL for the connection.
+   * @param async - {boolean} Asynchronous connection. Default is true.
+   * @param user - {string} Username for basic authentication (optional)
+   * @param password - {string} Password for basic authentication (optional)
+   */
+  this.open = function (method, url, async, user, password) {
+    this.abort()
+    errorFlag = false
+
+    // Check for valid request method
+    if (!isAllowedHttpMethod(method)) {
+      throw new Error('SecurityError: Request method not allowed')
+    }
+
+    settings = {
+      'method': method,
+      'url': url.toString(),
+      'async': (typeof async !== 'boolean' ? true : async),
+      'user': user || null,
+      'password': password || null
+    }
+
+    setState(this.OPENED)
+  }
+
+  /**
+   * Disables or enables isAllowedHttpHeader() check the request. Enabled by default.
+   * This does not conform to the W3C spec.
+   *
+   * @param state - {boolean} Enable or disable header checking.
+   */
+  this.setDisableHeaderCheck = function (state) {
+    disableHeaderCheck = state
+  }
+
+  /**
+   * Sets a header for the request or appends the value if one is already set.
+   *
+   * @param header - {string} Header name
+   * @param value - {string} Header value
+   */
+  this.setRequestHeader = function (header, value) {
+    if (this.readyState !== this.OPENED) {
+      throw new Error('INVALID_STATE_ERR: setRequestHeader can only be called when state is OPEN')
+    }
+    if (!isAllowedHttpHeader(header)) {
+      console.warn('Refused to set unsafe header "' + header + '"')
+      return
+    }
+    if (sendFlag) {
+      throw new Error('INVALID_STATE_ERR: send flag is true')
+    }
+    header = headersCase[header.toLowerCase()] || header
+    headersCase[header.toLowerCase()] = header
+    headers[header] = headers[header] ? headers[header] + ', ' + value : value
+  }
+
+  /**
+   * Gets a header from the server response.
+   *
+   * @param header - {string} Name of header to get.
+   * @return {Object} - Text of the header or null if it doesn't exist.
+   */
+  this.getResponseHeader = function (header) {
+    if (typeof header === 'string' &&
+      this.readyState > this.OPENED &&
+      response &&
+      response.headers &&
+      response.headers[header.toLowerCase()] &&
+      !errorFlag
+    ) {
+      return response.headers[header.toLowerCase()]
+    }
+
+    return null
+  }
+
+  /**
+   * Gets all the response headers.
+   *
+   * @return string A string with all response headers separated by CR+LF
+   */
+  this.getAllResponseHeaders = function () {
+    if (this.readyState < this.HEADERS_RECEIVED || errorFlag) {
+      return ''
+    }
+    let result = ''
+
+    for (let i in response.headers) {
+      // Cookie headers are excluded
+      if (i !== 'set-cookie' && i !== 'set-cookie2') {
+        result += i + ': ' + response.headers[i] + '\r\n'
+      }
+    }
+    return result.substr(0, result.length - 2)
+  }
+
+  /**
+   * Gets a request header
+   *
+   * @param name - {string} Name of header to get
+   * @return {string} Returns the request header or empty string if not set
+   */
+  this.getRequestHeader = function (name) {
+    if (typeof name === 'string' && headersCase[name.toLowerCase()]) {
+      return headers[headersCase[name.toLowerCase()]]
+    }
+
+    return ''
+  }
+
+  /**
+   * Sends the request to the server.
+   *
+   * @param data - {string} Optional data to send as request body.
+   */
+  this.send = function (data) {
+    if (this.readyState !== this.OPENED) {
+      throw new Error('INVALID_STATE_ERR: connection must be opened before send() is called')
+    }
+
+    if (sendFlag) {
+      throw new Error('INVALID_STATE_ERR: send has already been called')
+    }
+    let ssl = false
+    let local = false
+    const url = Url.parse(settings.url)
+    let host
+    // Determine the server
+    switch (url.protocol) {
+      case 'https:':
+        ssl = true
+        host = url.hostname
+        break
+      case 'http:':
+        host = url.hostname
+        break
+      case 'file:':
+        local = true
+        break
+      case undefined:
+      case null:
+      case '':
+        host = 'localhost'
+        break
+      default:
+        throw new Error('Protocol not supported.')
+    }
+
+    // Load files off the local filesystem (file://)
+    if (local) {
+      if (settings.method !== 'GET') {
+        throw new Error('XMLHttpRequest: Only GET method is supported')
+      }
+
+      if (settings.async) {
+        fs.readFile(url.pathname, 'utf8', function (error, data) {
+          if (error) {
+            self.handleError(error)
+          } else {
+            self.status = 200
+            self.responseText = data
+            setState(self.DONE)
+          }
+        })
+      } else {
+        try {
+          this.responseText = fs.readFileSync(url.pathname, 'utf8')
+          this.status = 200
+          setState(self.DONE)
+        } catch (e) {
+          this.handleError(e)
+        }
+      }
+
+      return
+    }
+
+    // Default to port 80. If accessing localhost on another port be sure
+    // to use http://localhost:port/path
+    const port = url.port || (ssl ? 443 : 80)
+    // Add query string if one is used
+    const uri = url.pathname + (url.search ? url.search : '')
+
+    // Set the defaults if they haven't been set
+    for (let name in defaultHeaders) {
+      if (!headersCase[name.toLowerCase()]) {
+        headers[name] = defaultHeaders[name]
+      }
+    }
+
+    // Set the Host header or the server may reject the request
+    headers.Host = host
+    // IPv6 addresses must be escaped with brackets
+    if (url.host[0] === '[') {
+      headers.Host = '[' + headers.Host + ']'
+    }
+    if (!((ssl && port === 443) || port === 80)) {
+      headers.Host += ':' + url.port
+    }
+
+    // Set Basic Auth if necessary
+    if (settings.user) {
+      if (typeof settings.password === 'undefined') {
+        settings.password = ''
+      }
+      const authBuf = Buffer.from(settings.user + ':' + settings.password)
+      headers.Authorization = 'Basic ' + authBuf.toString('base64')
+    }
+
+    // Set content length header
+    if (settings.method === 'GET' || settings.method === 'HEAD') {
+      data = null
+    } else if (data) {
+      headers['Content-Length'] = Buffer.isBuffer(data) ? data.length : Buffer.byteLength(data)
+
+      if (!this.getRequestHeader('Content-Type')) {
+        headers['Content-Type'] = 'text/plain;charset=UTF-8'
+      }
+    } else if (settings.method === 'POST') {
+      // For a post with no data set Content-Length: 0.
+      // This is required by buggy servers that don't meet the specs.
+      headers['Content-Length'] = 0
+    }
+
+    const options = {
+      host: host,
+      port: port,
+      path: uri,
+      method: settings.method,
+      headers: headers,
+      agent: false,
+      withCredentials: self.withCredentials
+    }
+
+    const responseType = this.responseType || 'text'
+
+    // Reset error flag
+    errorFlag = false
+
+    // Handle async requests
+    if (settings.async) {
+      // Use the proper protocol
+      var doRequest = ssl ? https.request : http.request
+
+      // Request is being sent, set send flag
+      sendFlag = true
+
+      // As per spec, this is called here for historical reasons.
+      self.dispatchEvent('readystatechange')
+
+      // Handler for the response
+      const responseHandler = function responseHandler (resp) {
+        // Set response var to the response we got back
+        // This is so it remains accessable outside this scope
+        response = resp
+        // Check for redirect
+        // @TODO Prevent looped redirects
+        if (response.statusCode === 301 || response.statusCode === 302 || response.statusCode === 303 || response.statusCode === 307) {
+          // Change URL to the redirect location
+          settings.url = response.headers.location
+          const url = Url.parse(settings.url)
+          // Set host var in case it's used later
+          host = url.hostname
+          // Options for the new request
+          const newOptions = {
+            hostname: url.hostname,
+            port: url.port,
+            path: url.path,
+            method: response.statusCode === 303 ? 'GET' : settings.method,
+            headers: headers,
+            withCredentials: self.withCredentials
+          }
+
+          // Issue the new request
+          request = doRequest(newOptions, responseHandler).on('error', errorHandler)
+          request.end()
+          // @TODO Check if an XHR event needs to be fired here
+          return
+        }
+
+        response.setEncoding('utf8')
+
+        setState(self.HEADERS_RECEIVED)
+        self.status = response.statusCode
+
+        response.on('data', function (chunk) {
+          // Make sure there's some data
+          if (chunk) {
+            self.responseText += chunk
+          }
+          // Don't emit state changes if the connection has been aborted.
+          if (sendFlag) {
+            setState(self.LOADING)
+          }
+        })
+
+        response.on('end', function () {
+          if (sendFlag) {
+            // Discard the end event if the connection has been aborted
+            setState(self.DONE)
+            sendFlag = false
+          }
+        })
+
+        response.on('error', function (error) {
+          self.handleError(error)
+        })
+      }
+
+      // Error handler for the request
+      const errorHandler = function errorHandler (error) {
+        self.handleError(error)
+      }
+
+      // Create the request
+      request = doRequest(options, responseHandler).on('error', errorHandler)
+
+      // Node 0.4 and later won't accept empty data. Make sure it's needed.
+      if (data) {
+        request.write(data)
+      }
+
+      request.end()
+
+      self.dispatchEvent('loadstart')
+    } else { // Synchronous
+      const encoding = responseType === 'text' ? 'utf8' : 'binary'
+      const output = require('child_process').execSync(`"${process.argv[0]}" "${__dirname}/request.js" \
+--ssl="${ssl}" \
+--encoding="${encoding}" \
+--request-options=${JSON.stringify(JSON.stringify(options))}`, { stdio: 'pipe' })
+      const result = JSON.parse(output.toString('utf8'))
+      if (result.error) {
+        self.handleError(result.error)
+      } else {
+        response = result.data
+        self.status = result.data.statusCode
+        if (encoding === 'binary') {
+          self.response = Uint8Array.from(result.data.binary.data).buffer
+        } else {
+          self.responseText = result.data.text
+        }
+        setState(self.DONE)
+      }
+    }
+  }
+
+  /**
+   * Called when an error is encountered to deal with it.
+   */
+  this.handleError = function (error) {
+    this.status = 0
+    this.statusText = error
+    this.responseText = error.stack
+    errorFlag = true
+    setState(this.DONE)
+    this.dispatchEvent('error')
+  }
+
+  /**
+   * Aborts a request.
+   */
+  this.abort = function () {
+    if (request) {
+      request.abort()
+      request = null
+    }
+
+    headers = defaultHeaders
+    this.status = 0
+    this.responseText = ''
+    this.responseXML = ''
+
+    errorFlag = true
+
+    if (this.readyState !== this.UNSENT &&
+      (this.readyState !== this.OPENED || sendFlag) &&
+      this.readyState !== this.DONE) {
+      sendFlag = false
+      setState(this.DONE)
+    }
+    this.readyState = this.UNSENT
+    this.dispatchEvent('abort')
+  }
+
+  /**
+   * Adds an event listener. Preferred method of binding to events.
+   */
+  this.addEventListener = function (event, callback) {
+    if (!(event in listeners)) {
+      listeners[event] = []
+    }
+    // Currently allows duplicate callbacks. Should it?
+    listeners[event].push(callback)
+  }
+
+  /**
+   * Remove an event callback that has already been bound.
+   * Only works on the matching funciton, cannot be a copy.
+   */
+  this.removeEventListener = function (event, callback) {
+    if (event in listeners) {
+      // Filter will return a new array with the callback removed
+      listeners[event] = listeners[event].filter(function (ev) {
+        return ev !== callback
+      })
+    }
+  }
+
+  /**
+   * Dispatch any events, including both "on" methods and events attached using addEventListener.
+   */
+  this.dispatchEvent = function (event) {
+    if (typeof self['on' + event] === 'function') {
+      self['on' + event]()
+    }
+    if (event in listeners) {
+      for (let i = 0, len = listeners[event].length; i < len; i++) {
+        listeners[event][i].call(self)
+      }
+    }
+  }
+
+  /**
+   * Changes readyState and calls onreadystatechange.
+   *
+   * @param state - {Number} New state
+   */
+  const setState = function (state) {
+    if (state === self.LOADING || self.readyState !== state) {
+      self.readyState = state
+
+      if (settings.async || self.readyState < self.OPENED || self.readyState === self.DONE) {
+        self.dispatchEvent('readystatechange')
+      }
+
+      if (self.readyState === self.DONE && !errorFlag) {
+        self.dispatchEvent('load')
+        // @TODO figure out InspectorInstrumentation::didLoadXHR(cookie)
+        self.dispatchEvent('loadend')
+      }
+    }
+  }
+}
diff --git a/stdlib/nodejs/node_modules/unxhr/lib/browser.js b/stdlib/nodejs/node_modules/unxhr/lib/browser.js
new file mode 100644
index 00000000..d94fc42a
--- /dev/null
+++ b/stdlib/nodejs/node_modules/unxhr/lib/browser.js
@@ -0,0 +1,2 @@
+/* global XMLHttpRequest */
+exports.XMLHttpRequest = XMLHttpRequest
diff --git a/stdlib/nodejs/node_modules/unxhr/lib/request.js b/stdlib/nodejs/node_modules/unxhr/lib/request.js
new file mode 100644
index 00000000..2e8c452b
--- /dev/null
+++ b/stdlib/nodejs/node_modules/unxhr/lib/request.js
@@ -0,0 +1,63 @@
+const http = require('http')
+const https = require('https')
+
+function doRequest (options) {
+  const { ssl, encoding, requestOptions } = options
+  return new Promise((resolve, reject) => {
+    let responseText = ''
+    const responseBinary = []
+    const httpRequest = ssl ? https.request : http.request
+    const req = httpRequest(requestOptions, function (response) {
+      if (encoding !== 'binary') {
+        response.setEncoding(encoding)
+      }
+      response.on('data', function (chunk) {
+        if (encoding === 'binary') {
+          responseBinary.push(chunk)
+        } else {
+          responseText += chunk
+        }
+      })
+      response.on('end', function () {
+        const result = {
+          error: null,
+          data: { statusCode: response.statusCode, headers: response.headers }
+        }
+        if (encoding === 'binary') {
+          result.data['binary'] = Buffer.concat(responseBinary)
+        } else {
+          result.data['text'] = responseText
+        }
+        resolve(result)
+      })
+      response.on('error', function (error) {
+        reject(error)
+      })
+    }).on('error', function (error) {
+      reject(error)
+    })
+    req.end()
+  })
+}
+
+(async () => {
+  try {
+    const args = process.argv.slice(2)
+    const options = {}
+    for (let j = 0; j < args.length; j++) {
+      const arg = args[j]
+      if (arg.startsWith('--ssl=')) {
+        options.ssl = arg.slice('--ssl='.length) === 'true'
+      } else if (arg.startsWith('--encoding=')) {
+        options.encoding = arg.slice('--encoding='.length)
+      } else if (arg.startsWith('--request-options=')) {
+        options.requestOptions = JSON.parse(arg.slice('--request-options='.length))
+      }
+    }
+    const result = await doRequest(options)
+    console.log(JSON.stringify(result))
+  } catch (e) {
+    console.log(JSON.stringify({ 'error': e }))
+  }
+})()
+
diff --git a/stdlib/nodejs/node_modules/unxhr/package.json b/stdlib/nodejs/node_modules/unxhr/package.json
new file mode 100644
index 00000000..f57b9f14
--- /dev/null
+++ b/stdlib/nodejs/node_modules/unxhr/package.json
@@ -0,0 +1,75 @@
+{
+  "_from": "unxhr@1.0.1",
+  "_id": "unxhr@1.0.1",
+  "_inBundle": false,
+  "_integrity": "sha512-MAhukhVHyaLGDjyDYhy8gVjWJyhTECCdNsLwlMoGFoNJ3o79fpQhtQuzmAE4IxCMDwraF4cW8ZjpAV0m9CRQbg==",
+  "_location": "/unxhr",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "version",
+    "registry": true,
+    "raw": "unxhr@1.0.1",
+    "name": "unxhr",
+    "escapedName": "unxhr",
+    "rawSpec": "1.0.1",
+    "saveSpec": null,
+    "fetchSpec": "1.0.1"
+  },
+  "_requiredBy": [
+    "/"
+  ],
+  "_resolved": "https://registry.npmjs.org/unxhr/-/unxhr-1.0.1.tgz",
+  "_shasum": "92200322d66c728993de771f9e01eeb21f41bc7b",
+  "_spec": "unxhr@1.0.1",
+  "_where": "/home/guillaume/workspace/opensource/opal/opal/stdlib/nodejs",
+  "authors": [
+    "Dan DeFelippi (http://driverdan.com)",
+    "Guillaume Grossetie (https://github.com/mogztter)"
+  ],
+  "browser": {
+    "fs": false,
+    "child_process": false
+  },
+  "bugs": {
+    "url": "http://github.com/mogztter/unxhr/issues"
+  },
+  "bundleDependencies": false,
+  "deprecated": false,
+  "description": "Synchronous and asynchronous XMLHttpRequest for Node",
+  "devDependencies": {
+    "chai": "4.2.0",
+    "dirty-chai": "2.0.1",
+    "get-port": "4.0.0",
+    "mocha": "5.2.0",
+    "standard": "12.0.1"
+  },
+  "directories": {
+    "lib": "./lib",
+    "example": "./example"
+  },
+  "engines": {
+    "node": ">=8.11"
+  },
+  "files": [
+    "lib"
+  ],
+  "homepage": "https://github.com/mogztter/unxhr#readme",
+  "keywords": [
+    "xhr",
+    "ajax",
+    "sync",
+    "http"
+  ],
+  "license": "MIT",
+  "main": "./lib/XMLHttpRequest.js",
+  "name": "unxhr",
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/mogztter/unxhr.git"
+  },
+  "scripts": {
+    "lint": "standard tests/**.js lib/**.js example/**.js",
+    "test": "mocha tests/test-*.js"
+  },
+  "version": "1.0.1"
+}
diff --git a/stdlib/nodejs/node_modules/wrappy/LICENSE b/stdlib/nodejs/node_modules/wrappy/LICENSE
new file mode 100644
index 00000000..19129e31
--- /dev/null
+++ b/stdlib/nodejs/node_modules/wrappy/LICENSE
@@ -0,0 +1,15 @@
+The ISC License
+
+Copyright (c) Isaac Z. Schlueter and Contributors
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
diff --git a/stdlib/nodejs/node_modules/wrappy/README.md b/stdlib/nodejs/node_modules/wrappy/README.md
new file mode 100644
index 00000000..98eab252
--- /dev/null
+++ b/stdlib/nodejs/node_modules/wrappy/README.md
@@ -0,0 +1,36 @@
+# wrappy
+
+Callback wrapping utility
+
+## USAGE
+
+```javascript
+var wrappy = require("wrappy")
+
+// var wrapper = wrappy(wrapperFunction)
+
+// make sure a cb is called only once
+// See also: http://npm.im/once for this specific use case
+var once = wrappy(function (cb) {
+  var called = false
+  return function () {
+    if (called) return
+    called = true
+    return cb.apply(this, arguments)
+  }
+})
+
+function printBoo () {
+  console.log('boo')
+}
+// has some rando property
+printBoo.iAmBooPrinter = true
+
+var onlyPrintOnce = once(printBoo)
+
+onlyPrintOnce() // prints 'boo'
+onlyPrintOnce() // does nothing
+
+// random property is retained!
+assert.equal(onlyPrintOnce.iAmBooPrinter, true)
+```
diff --git a/stdlib/nodejs/node_modules/wrappy/package.json b/stdlib/nodejs/node_modules/wrappy/package.json
new file mode 100644
index 00000000..84614283
--- /dev/null
+++ b/stdlib/nodejs/node_modules/wrappy/package.json
@@ -0,0 +1,59 @@
+{
+  "_from": "wrappy@1",
+  "_id": "wrappy@1.0.2",
+  "_inBundle": false,
+  "_integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
+  "_location": "/wrappy",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "range",
+    "registry": true,
+    "raw": "wrappy@1",
+    "name": "wrappy",
+    "escapedName": "wrappy",
+    "rawSpec": "1",
+    "saveSpec": null,
+    "fetchSpec": "1"
+  },
+  "_requiredBy": [
+    "/inflight",
+    "/once"
+  ],
+  "_resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+  "_shasum": "b5243d8f3ec1aa35f1364605bc0d1036e30ab69f",
+  "_spec": "wrappy@1",
+  "_where": "/home/guillaume/workspace/opensource/opal/opal/stdlib/nodejs/node_modules/inflight",
+  "author": {
+    "name": "Isaac Z. Schlueter",
+    "email": "i@izs.me",
+    "url": "http://blog.izs.me/"
+  },
+  "bugs": {
+    "url": "https://github.com/npm/wrappy/issues"
+  },
+  "bundleDependencies": false,
+  "dependencies": {},
+  "deprecated": false,
+  "description": "Callback wrapping utility",
+  "devDependencies": {
+    "tap": "^2.3.1"
+  },
+  "directories": {
+    "test": "test"
+  },
+  "files": [
+    "wrappy.js"
+  ],
+  "homepage": "https://github.com/npm/wrappy",
+  "license": "ISC",
+  "main": "wrappy.js",
+  "name": "wrappy",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/npm/wrappy.git"
+  },
+  "scripts": {
+    "test": "tap --coverage test/*.js"
+  },
+  "version": "1.0.2"
+}
diff --git a/stdlib/nodejs/node_modules/wrappy/wrappy.js b/stdlib/nodejs/node_modules/wrappy/wrappy.js
new file mode 100644
index 00000000..bb7e7d6f
--- /dev/null
+++ b/stdlib/nodejs/node_modules/wrappy/wrappy.js
@@ -0,0 +1,33 @@
+// Returns a wrapper function that returns a wrapped callback
+// The wrapper function should do some stuff, and return a
+// presumably different callback function.
+// This makes sure that own properties are retained, so that
+// decorations and such are not lost along the way.
+module.exports = wrappy
+function wrappy (fn, cb) {
+  if (fn && cb) return wrappy(fn)(cb)
+
+  if (typeof fn !== 'function')
+    throw new TypeError('need wrapper function')
+
+  Object.keys(fn).forEach(function (k) {
+    wrapper[k] = fn[k]
+  })
+
+  return wrapper
+
+  function wrapper() {
+    var args = new Array(arguments.length)
+    for (var i = 0; i < args.length; i++) {
+      args[i] = arguments[i]
+    }
+    var ret = fn.apply(this, args)
+    var cb = args[args.length-1]
+    if (typeof ret === 'function' && ret !== cb) {
+      Object.keys(cb).forEach(function (k) {
+        ret[k] = cb[k]
+      })
+    }
+    return ret
+  }
+}
diff --git a/stdlib/nodejs/open-uri.rb b/stdlib/nodejs/open-uri.rb
new file mode 100644
index 00000000..9bdc505e
--- /dev/null
+++ b/stdlib/nodejs/open-uri.rb
@@ -0,0 +1,26 @@
+module OpenURI
+  @__xmlhttprequest__ = `require('unxhr')`
+  `var __XMLHttpRequest__ = #{@__xmlhttprequest__}.XMLHttpRequest`
+
+  def self.request(uri)
+    %x{
+      var xhr = new __XMLHttpRequest__();
+      xhr.open('GET', uri, false);
+      xhr.responseType = 'arraybuffer';
+      xhr.send();
+      return xhr;
+    }
+  end
+
+  def self.data(req)
+    %x{
+      var arrayBuffer = req.response;
+      var byteArray = new Uint8Array(arrayBuffer);
+      var result = []
+      for (var i = 0; i < byteArray.byteLength; i++) {
+        result.push(byteArray[i]);
+      }
+      return result;
+    }
+  end
+end
diff --git a/stdlib/nodejs/package-lock.json b/stdlib/nodejs/package-lock.json
new file mode 100644
index 00000000..59aff178
--- /dev/null
+++ b/stdlib/nodejs/package-lock.json
@@ -0,0 +1,88 @@
+{
+  "requires": true,
+  "lockfileVersion": 1,
+  "dependencies": {
+    "balanced-match": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
+      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c="
+    },
+    "brace-expansion": {
+      "version": "1.1.11",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
+      "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
+      "requires": {
+        "balanced-match": "^1.0.0",
+        "concat-map": "0.0.1"
+      }
+    },
+    "concat-map": {
+      "version": "0.0.1",
+      "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
+      "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s="
+    },
+    "fs.realpath": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
+      "integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8="
+    },
+    "glob": {
+      "version": "7.1.3",
+      "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.3.tgz",
+      "integrity": "sha512-vcfuiIxogLV4DlGBHIUOwI0IbrJ8HWPc4MU7HzviGeNho/UJDfi6B5p3sHeWIQ0KGIU0Jpxi5ZHxemQfLkkAwQ==",
+      "requires": {
+        "fs.realpath": "^1.0.0",
+        "inflight": "^1.0.4",
+        "inherits": "2",
+        "minimatch": "^3.0.4",
+        "once": "^1.3.0",
+        "path-is-absolute": "^1.0.0"
+      }
+    },
+    "inflight": {
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/inflight/-/inflight-1.0.6.tgz",
+      "integrity": "sha1-Sb1jMdfQLQwJvJEKEHW6gWW1bfk=",
+      "requires": {
+        "once": "^1.3.0",
+        "wrappy": "1"
+      }
+    },
+    "inherits": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
+      "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4="
+    },
+    "minimatch": {
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",
+      "integrity": "sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==",
+      "requires": {
+        "brace-expansion": "^1.1.7"
+      }
+    },
+    "once": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
+      "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
+      "requires": {
+        "wrappy": "1"
+      }
+    },
+    "path-is-absolute": {
+      "version": "1.0.1",
+      "resolved": "http://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
+      "integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18="
+    },
+    "unxhr": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/unxhr/-/unxhr-1.0.1.tgz",
+      "integrity": "sha512-MAhukhVHyaLGDjyDYhy8gVjWJyhTECCdNsLwlMoGFoNJ3o79fpQhtQuzmAE4IxCMDwraF4cW8ZjpAV0m9CRQbg=="
+    },
+    "wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
+    }
+  }
+}
diff --git a/stdlib/nodejs/package.json b/stdlib/nodejs/package.json
new file mode 100644
index 00000000..6ba1d1e3
--- /dev/null
+++ b/stdlib/nodejs/package.json
@@ -0,0 +1,6 @@
+{
+  "dependencies": {
+    "glob": "7.1.3",
+    "unxhr": "1.0.1"
+  }
+}
diff --git a/stdlib/nodejs/pathname.rb b/stdlib/nodejs/pathname.rb
new file mode 100644
index 00000000..9e7504f0
--- /dev/null
+++ b/stdlib/nodejs/pathname.rb
@@ -0,0 +1,20 @@
+require 'pathname'
+
+class Pathname
+  include Comparable
+
+  @__path__ = `require('path')`
+  `var __path__ = #{@__path__}`
+
+  def absolute?
+    `__path__.isAbsolute(#{@path.to_str})`
+  end
+
+  def relative?
+    !absolute?
+  end
+
+  def to_path
+    @path
+  end
+end
diff --git a/stdlib/nodejs/require.rb b/stdlib/nodejs/require.rb
new file mode 100644
index 00000000..b34a82a8
--- /dev/null
+++ b/stdlib/nodejs/require.rb
@@ -0,0 +1,30 @@
+require 'opal-parser'
+
+module Kernel
+  def __prepare_require__(path)
+    name = `Opal.normalize(#{path})`
+    full_path = name.end_with?('.rb') ? name : name + '.rb'
+
+    if `!Opal.modules[#{name}]`
+      ruby = File.read(full_path)
+      compiler = Opal::Compiler.new(ruby, requirable: true, file: name)
+      js = compiler.compile
+      compiler.requires.each do |sub_path|
+        __prepare_require__(sub_path)
+      end
+      `eval(#{js})`
+    end
+
+    name
+  rescue => e
+    raise [path, name, full_path].inspect + e.message
+  end
+
+  def require(path)
+    `Opal.require(#{__prepare_require__(path)})`
+  end
+
+  def load(path)
+    `Opal.load(#{__prepare_require__(path)})`
+  end
+end
diff --git a/stdlib/nodejs/stacktrace.rb b/stdlib/nodejs/stacktrace.rb
new file mode 100644
index 00000000..107b3a81
--- /dev/null
+++ b/stdlib/nodejs/stacktrace.rb
@@ -0,0 +1,4 @@
+warn <<-WARN, uplevel: 1
+Requiring nodejs/stacktrace has been deprecated, if you use the default
+Node.js runner stack-traces will have source-map support out of the box.
+WARN
diff --git a/stdlib/nodejs/yaml.rb b/stdlib/nodejs/yaml.rb
new file mode 100644
index 00000000..1f2bbd88
--- /dev/null
+++ b/stdlib/nodejs/yaml.rb
@@ -0,0 +1,13 @@
+require 'native'
+require_relative './js-yaml-3-6-1'
+
+module YAML
+  @__yaml__ = `jsyaml`
+  `var __yaml__ = #{@__yaml__}`
+
+  def self.load_path(path)
+    loaded = `__yaml__.safeLoad(#{File}.__fs__.readFileSync(#{path}, 'utf8'))`
+    loaded = Hash.new(loaded) if native?(loaded)
+    loaded
+  end
+end
diff --git a/stdlib/observer.rb b/stdlib/observer.rb
new file mode 100644
index 00000000..18451070
--- /dev/null
+++ b/stdlib/observer.rb
@@ -0,0 +1,202 @@
+#
+# Implementation of the _Observer_ object-oriented design pattern.  The
+# following documentation is copied, with modifications, from "Programming
+# Ruby", by Hunt and Thomas; http://www.ruby-doc.org/docs/ProgrammingRuby/html/lib_patterns.html.
+#
+# See Observable for more info.
+
+# The Observer pattern (also known as publish/subscribe) provides a simple
+# mechanism for one object to inform a set of interested third-party objects
+# when its state changes.
+#
+# == Mechanism
+#
+# The notifying class mixes in the +Observable+
+# module, which provides the methods for managing the associated observer
+# objects.
+#
+# The observers must implement a method called +update+ to receive
+# notifications.
+#
+# The observable object must:
+# * assert that it has +#changed+
+# * call +#notify_observers+
+#
+# === Example
+#
+# The following example demonstrates this nicely.  A +Ticker+, when run,
+# continually receives the stock +Price+ for its <tt>@symbol</tt>.  A +Warner+
+# is a general observer of the price, and two warners are demonstrated, a
+# +WarnLow+ and a +WarnHigh+, which print a warning if the price is below or
+# above their set limits, respectively.
+#
+# The +update+ callback allows the warners to run without being explicitly
+# called.  The system is set up with the +Ticker+ and several observers, and the
+# observers do their duty without the top-level code having to interfere.
+#
+# Note that the contract between publisher and subscriber (observable and
+# observer) is not declared or enforced.  The +Ticker+ publishes a time and a
+# price, and the warners receive that.  But if you don't ensure that your
+# contracts are correct, nothing else can warn you.
+#
+#   require "observer"
+#
+#   class Ticker          ### Periodically fetch a stock price.
+#     include Observable
+#
+#     def initialize(symbol)
+#       @symbol = symbol
+#     end
+#
+#     def run
+#       lastPrice = nil
+#       loop do
+#         price = Price.fetch(@symbol)
+#         print "Current price: #{price}\n"
+#         if price != lastPrice
+#           changed                 # notify observers
+#           lastPrice = price
+#           notify_observers(Time.now, price)
+#         end
+#         sleep 1
+#       end
+#     end
+#   end
+#
+#   class Price           ### A mock class to fetch a stock price (60 - 140).
+#     def Price.fetch(symbol)
+#       60 + rand(80)
+#     end
+#   end
+#
+#   class Warner          ### An abstract observer of Ticker objects.
+#     def initialize(ticker, limit)
+#       @limit = limit
+#       ticker.add_observer(self)
+#     end
+#   end
+#
+#   class WarnLow < Warner
+#     def update(time, price)       # callback for observer
+#       if price < @limit
+#         print "--- #{time.to_s}: Price below #@limit: #{price}\n"
+#       end
+#     end
+#   end
+#
+#   class WarnHigh < Warner
+#     def update(time, price)       # callback for observer
+#       if price > @limit
+#         print "+++ #{time.to_s}: Price above #@limit: #{price}\n"
+#       end
+#     end
+#   end
+#
+#   ticker = Ticker.new("MSFT")
+#   WarnLow.new(ticker, 80)
+#   WarnHigh.new(ticker, 120)
+#   ticker.run
+#
+# Produces:
+#
+#   Current price: 83
+#   Current price: 75
+#   --- Sun Jun 09 00:10:25 CDT 2002: Price below 80: 75
+#   Current price: 90
+#   Current price: 134
+#   +++ Sun Jun 09 00:10:25 CDT 2002: Price above 120: 134
+#   Current price: 134
+#   Current price: 112
+#   Current price: 79
+#   --- Sun Jun 09 00:10:25 CDT 2002: Price below 80: 79
+module Observable
+
+  #
+  # Add +observer+ as an observer on this object. so that it will receive
+  # notifications.
+  #
+  # +observer+:: the object that will be notified of changes.
+  # +func+:: Symbol naming the method that will be called when this Observable
+  #          has changes.
+  #
+  #          This method must return true for +observer.respond_to?+ and will
+  #          receive <tt>*arg</tt> when #notify_observers is called, where
+  #          <tt>*arg</tt> is the value passed to #notify_observers by this
+  #          Observable
+  def add_observer(observer, func=:update)
+    @observer_peers = {} unless defined? @observer_peers
+    unless observer.respond_to? func
+      raise NoMethodError.new("observer does not respond to `#{func.to_s}'", func.to_s)
+    end
+    @observer_peers[observer] = func
+  end
+
+  #
+  # Remove +observer+ as an observer on this object so that it will no longer
+  # receive notifications.
+  #
+  # +observer+:: An observer of this Observable
+  def delete_observer(observer)
+    @observer_peers.delete observer if defined? @observer_peers
+  end
+
+  #
+  # Remove all observers associated with this object.
+  #
+  def delete_observers
+    @observer_peers.clear if defined? @observer_peers
+  end
+
+  #
+  # Return the number of observers associated with this object.
+  #
+  def count_observers
+    if defined? @observer_peers
+      @observer_peers.size
+    else
+      0
+    end
+  end
+
+  #
+  # Set the changed state of this object.  Notifications will be sent only if
+  # the changed +state+ is +true+.
+  #
+  # +state+:: Boolean indicating the changed state of this Observable.
+  #
+  def changed(state=true)
+    @observer_state = state
+  end
+
+  #
+  # Returns true if this object's state has been changed since the last
+  # #notify_observers call.
+  #
+  def changed?
+    if defined? @observer_state and @observer_state
+      true
+    else
+      false
+    end
+  end
+
+  #
+  # Notify observers of a change in state *if* this object's changed state is
+  # +true+.
+  #
+  # This will invoke the method named in #add_observer, passing <tt>*arg</tt>.
+  # The changed state is then set to +false+.
+  #
+  # <tt>*arg</tt>:: Any arguments to pass to the observers.
+  def notify_observers(*arg)
+    if defined? @observer_state and @observer_state
+      if defined? @observer_peers
+        @observer_peers.each do |k, v|
+          k.send v, *arg
+        end
+      end
+      @observer_state = false
+    end
+  end
+
+end
diff --git a/stdlib/opal-builder.rb b/stdlib/opal-builder.rb
new file mode 100644
index 00000000..a585d863
--- /dev/null
+++ b/stdlib/opal-builder.rb
@@ -0,0 +1,3 @@
+require 'opal/builder'
+require 'opal/builder_processors'
+require 'corelib/string/unpack'
diff --git a/stdlib/opal-parser.rb b/stdlib/opal-parser.rb
new file mode 100644
index 00000000..248a0929
--- /dev/null
+++ b/stdlib/opal-parser.rb
@@ -0,0 +1,76 @@
+# parser uses String#unpack
+require 'corelib/string/unpack'
+
+require 'opal/compiler'
+require 'opal/erb'
+require 'opal/version'
+
+module Kernel
+  def eval(str, binding = nil, file = nil, line = nil)
+    str = ::Opal.coerce_to!(str, String, :to_str)
+    default_eval_options = { file: file || '(eval)', eval: true }
+    compiling_options = __OPAL_COMPILER_CONFIG__.merge(default_eval_options)
+    code = `Opal.compile(str, compiling_options)`
+    if binding
+      binding.js_eval(code)
+    else
+      %x{
+        return (function(self) {
+          return eval(#{code});
+        })(self)
+      }
+    end
+  end
+
+  def require_remote(url)
+    %x{
+      var r = new XMLHttpRequest();
+      r.open("GET", url, false);
+      r.send('');
+    }
+    eval `r.responseText`
+  end
+end
+
+%x{
+  Opal.compile = function(str, options) {
+    try {
+      str = #{::Opal.coerce_to!(`str`, String, :to_str)}
+      if (options) options = Opal.hash(options);
+      return Opal.Opal.$compile(str, options);
+    }
+    catch (e) {
+      if (e.$$class === Opal.Opal.SyntaxError) {
+        var err = Opal.SyntaxError.$new(e.message);
+        err.$set_backtrace(e.$backtrace());
+        throw(err);
+      }
+      else { throw e; }
+    }
+  };
+
+  Opal['eval'] = function(str, options) {
+   return eval(Opal.compile(str, options));
+  };
+
+  function run_ruby_scripts() {
+    var tag, tags = document.getElementsByTagName('script');
+
+    for (var i = 0, len = tags.length; i < len; i++) {
+      tag = tags[i];
+      if (tag.type === "text/ruby") {
+        if (tag.src)       Opal.Kernel.$require_remote(tag.src);
+        if (tag.innerHTML) Opal.Kernel.$eval(tag.innerHTML);
+      }
+    }
+  }
+
+  if (typeof(document) !== 'undefined') {
+    if (window.addEventListener) {
+      window.addEventListener('DOMContentLoaded', run_ruby_scripts, false);
+    }
+    else {
+      window.attachEvent('onload', run_ruby_scripts);
+    }
+  }
+}
diff --git a/stdlib/opal-platform.rb b/stdlib/opal-platform.rb
new file mode 100644
index 00000000..7636627b
--- /dev/null
+++ b/stdlib/opal-platform.rb
@@ -0,0 +1,24 @@
+`/* global Java, GjsFileImporter */`
+
+browser         = `typeof(document) !== "undefined"`
+node            = `typeof(process) !== "undefined" && process.versions && process.versions.node`
+nashorn         = `typeof(Java) !== "undefined" && Java.type`
+headless_chrome = `typeof(navigator) !== "undefined" && /\bHeadlessChrome\//.test(navigator.userAgent)`
+gjs             = `typeof(window) !== "undefined" && typeof(GjsFileImporter) !== 'undefined'`
+quickjs         = `typeof(window) === "undefined" && typeof(__loadScript) !== 'undefined'`
+opal_miniracer  = `typeof(opalminiracer) !== 'undefined'`
+
+OPAL_PLATFORM = if nashorn
+                  'nashorn'
+                elsif node
+                  'nodejs'
+                elsif headless_chrome
+                  'headless-chrome'
+                elsif gjs
+                  'gjs'
+                elsif quickjs
+                  'quickjs'
+                elsif opal_miniracer
+                  'opal-miniracer'
+                else # possibly browser, which is the primary target
+                end
diff --git a/stdlib/opal-replutils.rb b/stdlib/opal-replutils.rb
new file mode 100644
index 00000000..fda275ec
--- /dev/null
+++ b/stdlib/opal-replutils.rb
@@ -0,0 +1,282 @@
+require 'pp'
+require 'stringio'
+
+
+module REPLUtils
+  module_function
+
+  def ls(object, colorize)
+    methods = imethods = object.methods
+    ancestors = object.class.ancestors
+    constants = []
+    ivs = object.instance_variables
+    cvs = []
+
+    if [Class, Module].include? object.class
+      imethods = object.instance_methods
+      ancestors = object.ancestors
+      constants = object.constants
+      cvs = object.class_variables
+    end
+
+    if colorize
+      blue      = ->(i) { "\e[1;34m#{i}\e[0m" }
+      dark_blue = ->(i) { "\e[34m#{i}\e[0m" }
+    else
+      blue = dark_blue = ->(i) { i }
+    end
+
+    out = ''
+    out = "#{blue['class variables']}: #{cvs.map { |i| dark_blue[i] }.sort.join('  ')}\n" + out unless cvs.empty?
+    out = "#{blue['instance variables']}: #{ivs.map { |i| dark_blue[i] }.sort.join('  ')}\n" + out unless ivs.empty?
+    ancestors.each do |a|
+      im = a.instance_methods(false)
+      meths = (im & imethods)
+      methods -= meths
+      imethods -= meths
+      next if meths.empty? || [Object, BasicObject, Kernel, PP::ObjectMixin].include?(a)
+      out = "#{blue["#{a.name}#methods"]}: #{meths.sort.join('  ')}\n" + out
+    end
+    methods &= object.methods(false)
+    out = "#{blue['self.methods']}: #{methods.sort.join('  ')}\n" + out unless methods.empty?
+    out = "#{blue['constants']}: #{constants.map { |i| dark_blue[i] }.sort.join('  ')}\n" + out unless constants.empty?
+    out
+  end
+
+  def eval_and_print(func, mode, colorize)
+    printer = if colorize
+                ->(i) do
+                  ColorPrinter.default(i)
+                rescue => e
+                  ColorPrinter.colorize(Opal.inspect(i))
+                end
+              else
+                ->(i) do
+                  out = []
+                  PP.pp(i, out)
+                  out.join
+                rescue
+                  Opal.inspect(i)
+                end
+              end
+
+    %x{
+      var $_result = eval(func);
+
+      if (mode == 'silent') return nil;
+
+      if ($_result === null) {
+        return "=> null";
+      }
+      else if (typeof $_result === 'undefined') {
+        return "=> undefined";
+      }
+      else if (typeof $_result.$$class === 'undefined') {
+        try {
+          var json = JSON.stringify($_result, null, 2);
+          if (!colorize) json = #{ColorPrinter.colorize(`json`)}
+          return "=> " + $_result.toString() + " => " + json;
+        }
+        catch(e) {
+          return "=> " + $_result.toString();
+        }
+      }
+      else {
+        if (mode == 'ls') {
+          return #{ls(`$_result`, colorize)};
+        }
+        else {
+          var pretty = #{printer.call(`$_result`)};
+          // Is it multiline? If yes, add a linebreak
+          if (pretty.match(/\n.*?\n/)) pretty = "\n" + pretty;
+          return "=> " + pretty;
+        }
+      }
+    }
+  rescue Exception => e # rubocop:disable Lint/RescueException
+    e.full_message(highlight: true)
+  end
+
+  def js_repl
+    while (line = gets)
+      input = JSON.parse(line)
+
+      out = eval_and_print(input[:code], input[:mode], input[:colors])
+      puts out if out
+      puts '<<<ready>>>'
+    end
+  end
+
+  # Slightly based on Pry's implementation
+  class ColorPrinter < ::PP
+    # Taken from CodeRay
+    TOKEN_COLORS = {
+      debug: "\e[1;37;44m",
+
+      annotation: "\e[34m",
+      attribute_name: "\e[35m",
+      attribute_value: "\e[31m",
+      binary: {
+        self: "\e[31m",
+        char: "\e[1;31m",
+        delimiter: "\e[1;31m",
+      },
+      char: {
+        self: "\e[35m",
+        delimiter: "\e[1;35m"
+      },
+      class: "\e[1;35;4m",
+      class_variable: "\e[36m",
+      color: "\e[32m",
+      comment: {
+        self: "\e[1;30m",
+        char: "\e[37m",
+        delimiter: "\e[37m",
+      },
+      constant: "\e[1;34;4m",
+      decorator: "\e[35m",
+      definition: "\e[1;33m",
+      directive: "\e[33m",
+      docstring: "\e[31m",
+      doctype: "\e[1;34m",
+      done: "\e[1;30;2m",
+      entity: "\e[31m",
+      error: "\e[1;37;41m",
+      exception: "\e[1;31m",
+      float: "\e[1;35m",
+      function: "\e[1;34m",
+      global_variable: "\e[1;32m",
+      hex: "\e[1;36m",
+      id: "\e[1;34m",
+      include: "\e[31m",
+      integer: "\e[1;34m",
+      imaginary: "\e[1;34m",
+      important: "\e[1;31m",
+      key: {
+        self: "\e[35m",
+        char: "\e[1;35m",
+        delimiter: "\e[1;35m",
+      },
+      keyword: "\e[32m",
+      label: "\e[1;33m",
+      local_variable: "\e[33m",
+      namespace: "\e[1;35m",
+      octal: "\e[1;34m",
+      predefined: "\e[36m",
+      predefined_constant: "\e[1;36m",
+      predefined_type: "\e[1;32m",
+      preprocessor: "\e[1;36m",
+      pseudo_class: "\e[1;34m",
+      regexp: {
+        self: "\e[35m",
+        delimiter: "\e[1;35m",
+        modifier: "\e[35m",
+        char: "\e[1;35m",
+      },
+      reserved: "\e[32m",
+      shell: {
+        self: "\e[33m",
+        char: "\e[1;33m",
+        delimiter: "\e[1;33m",
+        escape: "\e[1;33m",
+      },
+      string: {
+        self: "\e[31m",
+        modifier: "\e[1;31m",
+        char: "\e[1;35m",
+        delimiter: "\e[1;31m",
+        escape: "\e[1;31m",
+      },
+      symbol: {
+        self: "\e[33m",
+        delimiter: "\e[1;33m",
+      },
+      tag: "\e[32m",
+      type: "\e[1;34m",
+      value: "\e[36m",
+      variable: "\e[34m",
+
+      insert: {
+        self: "\e[42m",
+        insert: "\e[1;32;42m",
+        eyecatcher: "\e[102m",
+      },
+      delete: {
+        self: "\e[41m",
+        delete: "\e[1;31;41m",
+        eyecatcher: "\e[101m",
+      },
+      change: {
+        self: "\e[44m",
+        change: "\e[37;44m",
+      },
+      head: {
+        self: "\e[45m",
+        filename: "\e[37;45m"
+      },
+    }
+
+    TOKEN_COLORS[:keyword] = TOKEN_COLORS[:reserved]
+    TOKEN_COLORS[:method] = TOKEN_COLORS[:function]
+    TOKEN_COLORS[:escape] = TOKEN_COLORS[:delimiter]
+
+    def self.default(obj, width = 79)
+      pager = StringIO.new
+      pp(obj, pager, width)
+      pager.string
+    end
+
+    def self.pp(obj, output = $DEFAULT_OUTPUT, max_width = 79)
+      queue = ColorPrinter.new(output, max_width, "\n")
+      queue.guard_inspect_key { queue.pp(obj) }
+      queue.flush
+      output << "\n"
+    end
+
+    def text(str, max_width = str.length)
+      super(ColorPrinter.colorize(str), max_width)
+    end
+
+    def self.token(string, *name)
+      TOKEN_COLORS.dig(*name) + string + "\e[0m"
+    end
+
+    NUMBER = '[+-]?(?:0x[0-9a-fA-F]+|[0-9.]+(?:e[+-][0-9]+|i)?)'
+    REGEXP = '/.*?/[iesu]*'
+    STRING = '".*?"'
+    TOKEN_REGEXP = /(\s+|=>|[@$:]?[a-z]\w+|[A-Z]\w+|#{NUMBER}|#{REGEXP}|#{STRING}|#<.*?[> ]|.)/
+
+    def self.tokenize(str)
+      str.scan(TOKEN_REGEXP).map(&:first)
+    end
+
+    def self.colorize(str)
+      tokens = tokenize(str)
+
+      tokens.map do |tok|
+        case tok
+        when /^[0-9+-]/
+          if /[.e]/ =~ tok
+            token(tok, :float)
+          else
+            token(tok, :integer)
+          end
+        when /^"/
+          token(tok, :string, :self)
+        when /^:/
+          token(tok, :symbol, :self)
+        when /^[A-Z]/
+          token(tok, :constant)
+        when '<', '#', /^#</, '=', '>'
+          token(tok, :keyword)
+        when /^\/./
+          token(tok, :regexp, :self)
+        when 'true', 'false', 'nil'
+          token(tok, :predefined_constant)
+        else
+          tok
+        end
+      end.join
+    end
+  end
+end
diff --git a/stdlib/opal-source-maps.rb b/stdlib/opal-source-maps.rb
new file mode 100644
index 00000000..42b67fed
--- /dev/null
+++ b/stdlib/opal-source-maps.rb
@@ -0,0 +1 @@
+require 'opal/source_map'
diff --git a/stdlib/opal/miniracer.rb b/stdlib/opal/miniracer.rb
new file mode 100644
index 00000000..1375eed2
--- /dev/null
+++ b/stdlib/opal/miniracer.rb
@@ -0,0 +1,8 @@
+`/* global opalminiracer */`
+
+# Compatibility utilities for the API we provide in
+# lib/opal/cli_runners/mini_racer
+
+ARGV = `opalminiracer.argv`
+
+`Opal.exit = opalminiracer.exit`
diff --git a/stdlib/opal/platform.rb b/stdlib/opal/platform.rb
new file mode 100644
index 00000000..b5a6bf10
--- /dev/null
+++ b/stdlib/opal/platform.rb
@@ -0,0 +1,10 @@
+require 'opal-platform'
+
+case OPAL_PLATFORM
+when 'nashorn'         then require 'nashorn'
+when 'gjs'             then require 'gjs'
+when 'quickjs'         then require 'quickjs'
+when 'nodejs'          then require 'nodejs/base'
+when 'headless-chrome' then require 'headless_chrome'
+when 'opal-miniracer'  then require 'opal/miniracer'
+end
diff --git a/stdlib/opal/repl_js.rb b/stdlib/opal/repl_js.rb
new file mode 100644
index 00000000..6fd4282c
--- /dev/null
+++ b/stdlib/opal/repl_js.rb
@@ -0,0 +1,5 @@
+require 'opal/platform'
+require 'opal-replutils'
+require 'json'
+
+REPLUtils.js_repl
diff --git a/stdlib/open-uri.rb b/stdlib/open-uri.rb
new file mode 100644
index 00000000..749da7f3
--- /dev/null
+++ b/stdlib/open-uri.rb
@@ -0,0 +1,349 @@
+# Copied from https://raw.githubusercontent.com/ruby/ruby/373babeaac8c3e663e1ded74a9f06ac94a671ed9/lib/open-uri.rb
+# frozen_string_literal: true
+require 'stringio'
+require 'corelib/array/pack'
+
+module Kernel
+  private
+  alias open_uri_original_open open # :nodoc:
+  class << self
+    alias open_uri_original_open open # :nodoc:
+  end
+
+  # Allows the opening of various resources including URIs.
+  #
+  # If the first argument responds to the 'open' method, 'open' is called on
+  # it with the rest of the arguments.
+  #
+  # If the first argument is a string that begins with xxx://, it is parsed by
+  # URI.parse.  If the parsed object responds to the 'open' method,
+  # 'open' is called on it with the rest of the arguments.
+  #
+  # Otherwise, the original Kernel#open is called.
+  #
+  # OpenURI::OpenRead#open provides URI::HTTP#open, URI::HTTPS#open and
+  # URI::FTP#open, Kernel#open.
+  #
+  # We can accept URIs and strings that begin with http://, https:// and
+  # ftp://. In these cases, the opened file object is extended by OpenURI::Meta.
+  def open(name, *rest, &block) # :doc:
+    if name.respond_to?(:to_str) && %r{\A[A-Za-z][A-Za-z0-9+\-\.]*://} =~ name
+      OpenURI.open_uri(name, *rest, &block)
+    else
+      open_uri_original_open(name, *rest, &block)
+    end
+  end
+  module_function :open
+end
+
+# OpenURI is an easy-to-use wrapper for Net::HTTP, Net::HTTPS and Net::FTP.
+#
+# == Example
+#
+# It is possible to open an http, https or ftp URL as though it were a file:
+#
+#   open("http://www.ruby-lang.org/") {|f|
+#     f.each_line {|line| p line}
+#   }
+#
+# The opened file has several getter methods for its meta-information, as
+# follows, since it is extended by OpenURI::Meta.
+#
+#   open("http://www.ruby-lang.org/en") {|f|
+#     f.each_line {|line| p line}
+#     p f.base_uri         # <URI::HTTP:0x40e6ef2 URL:http://www.ruby-lang.org/en/>
+#     p f.content_type     # "text/html"
+#     p f.charset          # "iso-8859-1"
+#     p f.content_encoding # []
+#     p f.last_modified    # Thu Dec 05 02:45:02 UTC 2002
+#   }
+#
+# Additional header fields can be specified by an optional hash argument.
+#
+#   open("http://www.ruby-lang.org/en/",
+#     "User-Agent" => "Ruby/#{RUBY_VERSION}",
+#     "From" => "foo@bar.invalid",
+#     "Referer" => "http://www.ruby-lang.org/") {|f|
+#     # ...
+#   }
+#
+# The environment variables such as http_proxy, https_proxy and ftp_proxy
+# are in effect by default. Here we disable proxy:
+#
+#   open("http://www.ruby-lang.org/en/", :proxy => nil) {|f|
+#     # ...
+#   }
+#
+# See OpenURI::OpenRead.open and Kernel#open for more on available options.
+#
+# URI objects can be opened in a similar way.
+#
+#   uri = URI.parse("http://www.ruby-lang.org/en/")
+#   uri.open {|f|
+#     # ...
+#   }
+#
+# URI objects can be read directly. The returned string is also extended by
+# OpenURI::Meta.
+#
+#   str = uri.read
+#   p str.base_uri
+#
+# Author:: Tanaka Akira <akr@m17n.org>
+
+module OpenURI
+
+  def self.open_uri(name, *rest) # :nodoc:
+    io = open_loop(name, {})
+    io.rewind
+    if block_given?
+      begin
+        yield io
+      ensure
+        close_io(io)
+      end
+    else
+      io
+    end
+  end
+
+  def self.close_io(io)
+    if io.respond_to? :close!
+      io.close! # Tempfile
+    else
+      io.close unless io.closed?
+    end
+  end
+
+  def self.open_loop(uri, options) # :nodoc:
+    req = request(uri)
+    data = `req.responseText`
+    status = `req.status`
+    status_text = `req.statusText && req.statusText.errno ? req.statusText.errno : req.statusText`
+    if status == 200 || (status == 0 && data)
+      build_response(req, status, status_text)
+    else
+      raise OpenURI::HTTPError.new("#{status} #{status_text}", '')
+    end
+  end
+
+  def self.build_response(req, status, status_text)
+    buf = Buffer.new
+    buf << data(req).pack('c*')
+    io = buf.io
+    #io.base_uri = uri # TODO: Generate a URI object from the uri String
+    io.status = "#{status} #{status_text}"
+    io.meta_add_field('content-type', `req.getResponseHeader("Content-Type") || ''`)
+    last_modified = `req.getResponseHeader("Last-Modified")`
+    io.meta_add_field('last-modified', last_modified) if last_modified
+    io
+  end
+
+  def self.data(req)
+    %x{
+      var binStr = req.responseText;
+      var byteArray = [];
+      for (var i = 0, len = binStr.length; i < len; ++i) {
+        var c = binStr.charCodeAt(i);
+        var byteCode = c & 0xff; // byte at offset i
+        byteArray.push(byteCode);
+      }
+      return byteArray;
+    }
+  end
+
+  def self.request(uri)
+    %x{
+      try {
+        var xhr = new XMLHttpRequest();
+        xhr.open('GET', uri, false);
+        // We cannot use xhr.responseType = "arraybuffer" because XMLHttpRequest is used in synchronous mode.
+        // https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/responseType#Synchronous_XHR_restrictions
+        xhr.overrideMimeType('text/plain; charset=x-user-defined');
+        xhr.send();
+        return xhr;
+      } catch (error) {
+        #{raise OpenURI::HTTPError.new(`error.message`, '')}
+      }
+    }
+  end
+
+  class HTTPError < StandardError
+    def initialize(message, io)
+      super(message, io)
+      @io = io
+    end
+    attr_reader :io
+  end
+
+  class Buffer # :nodoc: all
+    def initialize
+      @io = StringIO.new
+      @size = 0
+    end
+    attr_reader :size
+
+    def <<(str)
+      @io << str
+      @size += str.length
+    end
+
+    def io
+      Meta.init @io unless Meta === @io
+      @io
+    end
+  end
+
+  # Mixin for holding meta-information.
+  module Meta
+    def Meta.init(obj, src=nil) # :nodoc:
+      obj.extend Meta
+      obj.instance_eval {
+        @base_uri = nil
+        @meta = {} # name to string.  legacy.
+        @metas = {} # name to array of strings.
+      }
+      if src
+        obj.status = src.status
+        obj.base_uri = src.base_uri
+        src.metas.each {|name, values|
+          obj.meta_add_field2(name, values)
+        }
+      end
+    end
+
+    # returns an Array that consists of status code and message.
+    attr_accessor :status
+
+    # returns a URI that is the base of relative URIs in the data.
+    # It may differ from the URI supplied by a user due to redirection.
+    attr_accessor :base_uri
+
+    # returns a Hash that represents header fields.
+    # The Hash keys are downcased for canonicalization.
+    # The Hash values are a field body.
+    # If there are multiple field with same field name,
+    # the field values are concatenated with a comma.
+    attr_reader :meta
+
+    # returns a Hash that represents header fields.
+    # The Hash keys are downcased for canonicalization.
+    # The Hash value are an array of field values.
+    attr_reader :metas
+
+    def meta_setup_encoding # :nodoc:
+      charset = self.charset
+      enc = find_encoding(charset)
+      set_encoding(enc)
+    end
+
+    def set_encoding(enc)
+      if self.respond_to? :force_encoding
+        self.force_encoding(enc)
+      elsif self.respond_to? :string
+        self.string.force_encoding(enc)
+      else # Tempfile
+        self.set_encoding enc
+      end
+    end
+
+    def find_encoding(charset)
+      enc = nil
+      if charset
+        begin
+          enc = Encoding.find(charset)
+        rescue ArgumentError
+        end
+      end
+      enc = Encoding::ASCII_8BIT unless enc
+      enc
+    end
+
+    def meta_add_field2(name, values) # :nodoc:
+      name = name.downcase
+      @metas[name] = values
+      @meta[name] = values.join(', ')
+      meta_setup_encoding if name == 'content-type'
+    end
+
+    def meta_add_field(name, value) # :nodoc:
+      meta_add_field2(name, [value])
+    end
+
+    def last_modified
+      if (vs = @metas['last-modified'])
+        Time.at(`Date.parse(#{vs.join(', ')}) / 1000`).utc
+      else
+        nil
+      end
+    end
+
+    def content_type_parse # :nodoc:
+      content_type = @metas['content-type']
+      # FIXME Extract type, subtype and parameters
+      content_type.join(', ')
+    end
+
+    # returns a charset parameter in Content-Type field.
+    # It is downcased for canonicalization.
+    #
+    # If charset parameter is not given but a block is given,
+    # the block is called and its result is returned.
+    # It can be used to guess charset.
+    #
+    # If charset parameter and block is not given,
+    # nil is returned except text type in HTTP.
+    # In that case, "iso-8859-1" is returned as defined by RFC2616 3.7.1.
+    def charset
+      type = content_type_parse
+      if type && %r{\Atext/} =~ type && @base_uri && /\Ahttp\z/i =~ @base_uri.scheme
+        'iso-8859-1' # RFC2616 3.7.1
+      else
+        nil
+      end
+    end
+
+    # returns "type/subtype" which is MIME Content-Type.
+    # It is downcased for canonicalization.
+    # Content-Type parameters are stripped.
+    def content_type
+      type = content_type_parse
+      type || 'application/octet-stream'
+    end
+  end
+
+  # Mixin for HTTP and FTP URIs.
+  module OpenRead
+    # OpenURI::OpenRead#open provides `open' for URI::HTTP and URI::FTP.
+    #
+    # OpenURI::OpenRead#open takes optional 3 arguments as:
+    #
+    #   OpenURI::OpenRead#open([mode [, perm]] [, options]) [{|io| ... }]
+    #
+    # OpenURI::OpenRead#open returns an IO-like object if block is not given.
+    # Otherwise it yields the IO object and return the value of the block.
+    # The IO object is extended with OpenURI::Meta.
+    #
+    # +mode+ and +perm+ are the same as Kernel#open.
+    #
+    # However, +mode+ must be read mode because OpenURI::OpenRead#open doesn't
+    # support write mode (yet).
+    # Also +perm+ is ignored because it is meaningful only for file creation.
+    #
+    def open(*rest, &block)
+      OpenURI.open_uri(self, *rest, &block)
+    end
+
+    # OpenURI::OpenRead#read([options]) reads a content referenced by self and
+    # returns the content as string.
+    # The string is extended with OpenURI::Meta.
+    # The argument +options+ is same as OpenURI::OpenRead#open.
+    def read(options={})
+      self.open(options) {|f|
+        str = f.read
+        Meta.init str, f
+        str
+      }
+    end
+  end
+end
diff --git a/stdlib/optparse.rb b/stdlib/optparse.rb
new file mode 100644
index 00000000..85b35f38
--- /dev/null
+++ b/stdlib/optparse.rb
@@ -0,0 +1,2279 @@
+# frozen_string_literal: true
+#
+# optparse.rb - command-line option analysis with the OptionParser class.
+#
+# Author:: Nobu Nakada
+# Documentation:: Nobu Nakada and Gavin Sinclair.
+#
+# See OptionParser for documentation.
+#
+
+
+#--
+# == Developer Documentation (not for RDoc output)
+#
+# === Class tree
+#
+# - OptionParser:: front end
+# - OptionParser::Switch:: each switches
+# - OptionParser::List:: options list
+# - OptionParser::ParseError:: errors on parsing
+#   - OptionParser::AmbiguousOption
+#   - OptionParser::NeedlessArgument
+#   - OptionParser::MissingArgument
+#   - OptionParser::InvalidOption
+#   - OptionParser::InvalidArgument
+#     - OptionParser::AmbiguousArgument
+#
+# === Object relationship diagram
+#
+#   +--------------+
+#   | OptionParser |<>-----+
+#   +--------------+       |                      +--------+
+#                          |                    ,-| Switch |
+#        on_head -------->+---------------+    /  +--------+
+#        accept/reject -->| List          |<|>-
+#                         |               |<|>-  +----------+
+#        on ------------->+---------------+    `-| argument |
+#                           :           :        |  class   |
+#                         +---------------+      |==========|
+#        on_tail -------->|               |      |pattern   |
+#                         +---------------+      |----------|
+#   OptionParser.accept ->| DefaultList   |      |converter |
+#                reject   |(shared between|      +----------+
+#                         | all instances)|
+#                         +---------------+
+#
+#++
+#
+# == OptionParser
+#
+# === New to \OptionParser?
+#
+# See the {Tutorial}[./doc/optparse/tutorial_rdoc.html].
+#
+# === Introduction
+#
+# OptionParser is a class for command-line option analysis.  It is much more
+# advanced, yet also easier to use, than GetoptLong, and is a more Ruby-oriented
+# solution.
+#
+# === Features
+#
+# 1. The argument specification and the code to handle it are written in the
+#    same place.
+# 2. It can output an option summary; you don't need to maintain this string
+#    separately.
+# 3. Optional and mandatory arguments are specified very gracefully.
+# 4. Arguments can be automatically converted to a specified class.
+# 5. Arguments can be restricted to a certain set.
+#
+# All of these features are demonstrated in the examples below.  See
+# #make_switch for full documentation.
+#
+# === Minimal example
+#
+#   require 'optparse'
+#
+#   options = {}
+#   OptionParser.new do |parser|
+#     parser.banner = "Usage: example.rb [options]"
+#
+#     parser.on("-v", "--[no-]verbose", "Run verbosely") do |v|
+#       options[:verbose] = v
+#     end
+#   end.parse!
+#
+#   p options
+#   p ARGV
+#
+# === Generating Help
+#
+# OptionParser can be used to automatically generate help for the commands you
+# write:
+#
+#   require 'optparse'
+#
+#   Options = Struct.new(:name)
+#
+#   class Parser
+#     def self.parse(options)
+#       args = Options.new("world")
+#
+#       opt_parser = OptionParser.new do |parser|
+#         parser.banner = "Usage: example.rb [options]"
+#
+#         parser.on("-nNAME", "--name=NAME", "Name to say hello to") do |n|
+#           args.name = n
+#         end
+#
+#         parser.on("-h", "--help", "Prints this help") do
+#           puts parser
+#           exit
+#         end
+#       end
+#
+#       opt_parser.parse!(options)
+#       return args
+#     end
+#   end
+#   options = Parser.parse %w[--help]
+#
+#   #=>
+#      # Usage: example.rb [options]
+#      #     -n, --name=NAME                  Name to say hello to
+#      #     -h, --help                       Prints this help
+#
+# === Required Arguments
+#
+# For options that require an argument, option specification strings may include an
+# option name in all caps. If an option is used without the required argument,
+# an exception will be raised.
+#
+#   require 'optparse'
+#
+#   options = {}
+#   OptionParser.new do |parser|
+#     parser.on("-r", "--require LIBRARY",
+#               "Require the LIBRARY before executing your script") do |lib|
+#       puts "You required #{lib}!"
+#     end
+#   end.parse!
+#
+# Used:
+#
+#   $ ruby optparse-test.rb -r
+#   optparse-test.rb:9:in `<main>': missing argument: -r (OptionParser::MissingArgument)
+#   $ ruby optparse-test.rb -r my-library
+#   You required my-library!
+#
+# === Type Coercion
+#
+# OptionParser supports the ability to coerce command line arguments
+# into objects for us.
+#
+# OptionParser comes with a few ready-to-use kinds of  type
+# coercion. They are:
+#
+# - Date  -- Anything accepted by +Date.parse+
+# - DateTime -- Anything accepted by +DateTime.parse+
+# - Time -- Anything accepted by +Time.httpdate+ or +Time.parse+
+# - URI  -- Anything accepted by +URI.parse+
+# - Shellwords -- Anything accepted by +Shellwords.shellwords+
+# - String -- Any non-empty string
+# - Integer -- Any integer. Will convert octal. (e.g. 124, -3, 040)
+# - Float -- Any float. (e.g. 10, 3.14, -100E+13)
+# - Numeric -- Any integer, float, or rational (1, 3.4, 1/3)
+# - DecimalInteger -- Like +Integer+, but no octal format.
+# - OctalInteger -- Like +Integer+, but no decimal format.
+# - DecimalNumeric -- Decimal integer or float.
+# - TrueClass --  Accepts '+, yes, true, -, no, false' and
+#   defaults as +true+
+# - FalseClass -- Same as +TrueClass+, but defaults to +false+
+# - Array -- Strings separated by ',' (e.g. 1,2,3)
+# - Regexp -- Regular expressions. Also includes options.
+#
+# We can also add our own coercions, which we will cover below.
+#
+# ==== Using Built-in Conversions
+#
+# As an example, the built-in +Time+ conversion is used. The other built-in
+# conversions behave in the same way.
+# OptionParser will attempt to parse the argument
+# as a +Time+. If it succeeds, that time will be passed to the
+# handler block. Otherwise, an exception will be raised.
+#
+#   require 'optparse'
+#   require 'optparse/time'
+#   OptionParser.new do |parser|
+#     parser.on("-t", "--time [TIME]", Time, "Begin execution at given time") do |time|
+#       p time
+#     end
+#   end.parse!
+#
+# Used:
+#
+#   $ ruby optparse-test.rb  -t nonsense
+#   ... invalid argument: -t nonsense (OptionParser::InvalidArgument)
+#   $ ruby optparse-test.rb  -t 10-11-12
+#   2010-11-12 00:00:00 -0500
+#   $ ruby optparse-test.rb  -t 9:30
+#   2014-08-13 09:30:00 -0400
+#
+# ==== Creating Custom Conversions
+#
+# The +accept+ method on OptionParser may be used to create converters.
+# It specifies which conversion block to call whenever a class is specified.
+# The example below uses it to fetch a +User+ object before the +on+ handler receives it.
+#
+#   require 'optparse'
+#
+#   User = Struct.new(:id, :name)
+#
+#   def find_user id
+#     not_found = ->{ raise "No User Found for id #{id}" }
+#     [ User.new(1, "Sam"),
+#       User.new(2, "Gandalf") ].find(not_found) do |u|
+#       u.id == id
+#     end
+#   end
+#
+#   op = OptionParser.new
+#   op.accept(User) do |user_id|
+#     find_user user_id.to_i
+#   end
+#
+#   op.on("--user ID", User) do |user|
+#     puts user
+#   end
+#
+#   op.parse!
+#
+# Used:
+#
+#   $ ruby optparse-test.rb --user 1
+#   #<struct User id=1, name="Sam">
+#   $ ruby optparse-test.rb --user 2
+#   #<struct User id=2, name="Gandalf">
+#   $ ruby optparse-test.rb --user 3
+#   optparse-test.rb:15:in `block in find_user': No User Found for id 3 (RuntimeError)
+#
+# === Store options to a Hash
+#
+# The +into+ option of +order+, +parse+ and so on methods stores command line options into a Hash.
+#
+#   require 'optparse'
+#
+#   options = {}
+#   OptionParser.new do |parser|
+#     parser.on('-a')
+#     parser.on('-b NUM', Integer)
+#     parser.on('-v', '--verbose')
+#   end.parse!(into: options)
+#
+#   p options
+#
+# Used:
+#
+#   $ ruby optparse-test.rb -a
+#   {:a=>true}
+#   $ ruby optparse-test.rb -a -v
+#   {:a=>true, :verbose=>true}
+#   $ ruby optparse-test.rb -a -b 100
+#   {:a=>true, :b=>100}
+#
+# === Complete example
+#
+# The following example is a complete Ruby program.  You can run it and see the
+# effect of specifying various options.  This is probably the best way to learn
+# the features of +optparse+.
+#
+#   require 'optparse'
+#   require 'optparse/time'
+#   require 'ostruct'
+#   require 'pp'
+#
+#   class OptparseExample
+#     Version = '1.0.0'
+#
+#     CODES = %w[iso-2022-jp shift_jis euc-jp utf8 binary]
+#     CODE_ALIASES = { "jis" => "iso-2022-jp", "sjis" => "shift_jis" }
+#
+#     class ScriptOptions
+#       attr_accessor :library, :inplace, :encoding, :transfer_type,
+#                     :verbose, :extension, :delay, :time, :record_separator,
+#                     :list
+#
+#       def initialize
+#         self.library = []
+#         self.inplace = false
+#         self.encoding = "utf8"
+#         self.transfer_type = :auto
+#         self.verbose = false
+#       end
+#
+#       def define_options(parser)
+#         parser.banner = "Usage: example.rb [options]"
+#         parser.separator ""
+#         parser.separator "Specific options:"
+#
+#         # add additional options
+#         perform_inplace_option(parser)
+#         delay_execution_option(parser)
+#         execute_at_time_option(parser)
+#         specify_record_separator_option(parser)
+#         list_example_option(parser)
+#         specify_encoding_option(parser)
+#         optional_option_argument_with_keyword_completion_option(parser)
+#         boolean_verbose_option(parser)
+#
+#         parser.separator ""
+#         parser.separator "Common options:"
+#         # No argument, shows at tail.  This will print an options summary.
+#         # Try it and see!
+#         parser.on_tail("-h", "--help", "Show this message") do
+#           puts parser
+#           exit
+#         end
+#         # Another typical switch to print the version.
+#         parser.on_tail("--version", "Show version") do
+#           puts Version
+#           exit
+#         end
+#       end
+#
+#       def perform_inplace_option(parser)
+#         # Specifies an optional option argument
+#         parser.on("-i", "--inplace [EXTENSION]",
+#                   "Edit ARGV files in place",
+#                   "(make backup if EXTENSION supplied)") do |ext|
+#           self.inplace = true
+#           self.extension = ext || ''
+#           self.extension.sub!(/\A\.?(?=.)/, ".")  # Ensure extension begins with dot.
+#         end
+#       end
+#
+#       def delay_execution_option(parser)
+#         # Cast 'delay' argument to a Float.
+#         parser.on("--delay N", Float, "Delay N seconds before executing") do |n|
+#           self.delay = n
+#         end
+#       end
+#
+#       def execute_at_time_option(parser)
+#         # Cast 'time' argument to a Time object.
+#         parser.on("-t", "--time [TIME]", Time, "Begin execution at given time") do |time|
+#           self.time = time
+#         end
+#       end
+#
+#       def specify_record_separator_option(parser)
+#         # Cast to octal integer.
+#         parser.on("-F", "--irs [OCTAL]", OptionParser::OctalInteger,
+#                   "Specify record separator (default \\0)") do |rs|
+#           self.record_separator = rs
+#         end
+#       end
+#
+#       def list_example_option(parser)
+#         # List of arguments.
+#         parser.on("--list x,y,z", Array, "Example 'list' of arguments") do |list|
+#           self.list = list
+#         end
+#       end
+#
+#       def specify_encoding_option(parser)
+#         # Keyword completion.  We are specifying a specific set of arguments (CODES
+#         # and CODE_ALIASES - notice the latter is a Hash), and the user may provide
+#         # the shortest unambiguous text.
+#         code_list = (CODE_ALIASES.keys + CODES).join(', ')
+#         parser.on("--code CODE", CODES, CODE_ALIASES, "Select encoding",
+#                   "(#{code_list})") do |encoding|
+#           self.encoding = encoding
+#         end
+#       end
+#
+#       def optional_option_argument_with_keyword_completion_option(parser)
+#         # Optional '--type' option argument with keyword completion.
+#         parser.on("--type [TYPE]", [:text, :binary, :auto],
+#                   "Select transfer type (text, binary, auto)") do |t|
+#           self.transfer_type = t
+#         end
+#       end
+#
+#       def boolean_verbose_option(parser)
+#         # Boolean switch.
+#         parser.on("-v", "--[no-]verbose", "Run verbosely") do |v|
+#           self.verbose = v
+#         end
+#       end
+#     end
+#
+#     #
+#     # Return a structure describing the options.
+#     #
+#     def parse(args)
+#       # The options specified on the command line will be collected in
+#       # *options*.
+#
+#       @options = ScriptOptions.new
+#       @args = OptionParser.new do |parser|
+#         @options.define_options(parser)
+#         parser.parse!(args)
+#       end
+#       @options
+#     end
+#
+#     attr_reader :parser, :options
+#   end  # class OptparseExample
+#
+#   example = OptparseExample.new
+#   options = example.parse(ARGV)
+#   pp options # example.options
+#   pp ARGV
+#
+# === Shell Completion
+#
+# For modern shells (e.g. bash, zsh, etc.), you can use shell
+# completion for command line options.
+#
+# === Further documentation
+#
+# The above examples, along with the accompanying
+# {Tutorial}[./doc/optparse/tutorial_rdoc.html],
+# should be enough to learn how to use this class.
+# If you have any questions, file a ticket at http://bugs.ruby-lang.org.
+#
+class OptionParser
+  OptionParser::Version = '0.1.1'
+
+  # :stopdoc:
+  NoArgument = [NO_ARGUMENT = :NONE, nil].freeze
+  RequiredArgument = [REQUIRED_ARGUMENT = :REQUIRED, true].freeze
+  OptionalArgument = [OPTIONAL_ARGUMENT = :OPTIONAL, false].freeze
+  # :startdoc:
+
+  #
+  # Keyword completion module.  This allows partial arguments to be specified
+  # and resolved against a list of acceptable values.
+  #
+  module Completion
+    def self.regexp(key, icase)
+      Regexp.new('\A' + Regexp.quote(key).gsub(/\w+\b/, '\&\w*'), icase)
+    end
+
+    def self.candidate(key, icase = false, pat = nil, &block)
+      pat ||= Completion.regexp(key, icase)
+      candidates = []
+      block.call do |k, *v|
+        (if Regexp === k
+           kn = ''
+           k === key
+         else
+           kn = defined?(k.id2name) ? k.id2name : k
+           pat === kn
+         end) || next
+        v << k if v.empty?
+        candidates << [k, v, kn]
+      end
+      candidates
+    end
+
+    def candidate(key, icase = false, pat = nil)
+      Completion.candidate(key, icase, pat, &method(:each))
+    end
+
+    public
+
+    def complete(key, icase = false, pat = nil)
+      candidates = candidate(key, icase, pat, &method(:each)).sort_by { |k, v, kn| kn.size }
+      if candidates.size == 1
+        canon, sw, * = candidates[0]
+      elsif candidates.size > 1
+        canon, sw, cn = candidates.shift
+        candidates.each do |k, v, kn|
+          next if sw == v
+          if (String === cn) && (String === kn)
+            if cn.rindex(kn, 0)
+              canon, sw, cn = k, v, kn
+              next
+            elsif kn.rindex(cn, 0)
+              next
+            end
+          end
+          throw :ambiguous, key
+        end
+      end
+      if canon
+        block_given? || (return key, *sw)
+        yield(key, *sw)
+      end
+    end
+
+    def convert(opt = nil, val = nil, *)
+      val
+    end
+  end
+
+
+  #
+  # Map from option/keyword string to object with completion.
+  #
+  class OptionMap < Hash
+    include Completion
+  end
+
+
+  #
+  # Individual switch class.  Not important to the user.
+  #
+  # Defined within Switch are several Switch-derived classes: NoArgument,
+  # RequiredArgument, etc.
+  #
+  class Switch
+    attr_reader :pattern, :conv, :short, :long, :arg, :desc, :block
+
+    #
+    # Guesses argument style from +arg+.  Returns corresponding
+    # OptionParser::Switch class (OptionalArgument, etc.).
+    #
+    def self.guess(arg)
+      case arg
+      when ''
+        t = self
+      when /\A=?\[/
+        t = Switch::OptionalArgument
+      when /\A\s+\[/
+        t = Switch::PlacedArgument
+      else
+        t = Switch::RequiredArgument
+      end
+      (self >= t) || incompatible_argument_styles(arg, t)
+      t
+    end
+
+    def self.incompatible_argument_styles(arg, t)
+      raise(ArgumentError, "#{arg}: incompatible argument styles\n  #{self}, #{t}",
+        ParseError.filter_backtrace(caller(2))
+      )
+    end
+
+    def self.pattern
+      NilClass
+    end
+
+    def initialize(pattern = nil, conv = nil,
+      short = nil, long = nil, arg = nil,
+      desc = ([] if short || long), block = nil, &_block)
+      raise if Array === pattern
+      block ||= _block
+      @pattern, @conv, @short, @long, @arg, @desc, @block =
+        pattern, conv, short, long, arg, desc, block
+    end
+
+    #
+    # Parses +arg+ and returns rest of +arg+ and matched portion to the
+    # argument pattern. Yields when the pattern doesn't match substring.
+    #
+    def parse_arg(arg) # :nodoc:
+      pattern || (return nil, [arg])
+      unless m = pattern.match(arg)
+        yield(InvalidArgument, arg)
+        return arg, []
+      end
+      if String === m
+        m = [s = m]
+      else
+        m = m.to_a
+        s = m[0]
+        return nil, m unless String === s
+      end
+      raise InvalidArgument, arg unless arg.rindex(s, 0)
+      return nil, m if s.length == arg.length
+      yield(InvalidArgument, arg) # didn't match whole arg
+      [arg[s.length..-1], m]
+    end
+    private :parse_arg
+
+    #
+    # Parses argument, converts and returns +arg+, +block+ and result of
+    # conversion. Yields at semi-error condition instead of raising an
+    # exception.
+    #
+    def conv_arg(arg, val = []) # :nodoc:
+      if conv
+        val = conv.call(*val)
+      else
+        val = proc { |v| v }.call(*val)
+      end
+      [arg, block, val]
+    end
+    private :conv_arg
+
+    #
+    # Produces the summary text. Each line of the summary is yielded to the
+    # block (without newline).
+    #
+    # +sdone+::  Already summarized short style options keyed hash.
+    # +ldone+::  Already summarized long style options keyed hash.
+    # +width+::  Width of left side (option part). In other words, the right
+    #            side (description part) starts after +width+ columns.
+    # +max+::    Maximum width of left side -> the options are filled within
+    #            +max+ columns.
+    # +indent+:: Prefix string indents all summarized lines.
+    #
+    def summarize(sdone = {}, ldone = {}, width = 1, max = width - 1, indent = '')
+      sopts, lopts = [], [], nil
+      @short.each { |s| sdone.fetch(s) { sopts << s }; sdone[s] = true } if @short
+      @long.each { |s| ldone.fetch(s) { lopts << s }; ldone[s] = true } if @long
+      return if sopts.empty? && lopts.empty? # completely hidden
+
+      left = [sopts.join(', ')]
+      right = desc.dup
+
+      while s = lopts.shift
+        l = left[-1].length + s.length
+        l += arg.length if left.size == 1 && arg
+        (l < max) || sopts.empty? || left << +''
+        left[-1] += (left[-1].empty? ? ' ' * 4 : ', ') + s
+      end
+
+      if arg
+        left[0] += (left[1] ? arg.sub(/\A(\[?)=/, '\1') + ',' : arg)
+      end
+      mlen = left.collect(&:length).max.to_i
+      while (mlen > width) && (l = left.shift)
+        mlen = left.collect(&:length).max.to_i if l.length == mlen
+        if (l.length < width) && (r = right[0]) && !r.empty?
+          l = l.to_s.ljust(width) + ' ' + r
+          right.shift
+        end
+        yield(indent + l)
+      end
+
+      while begin l = left.shift; r = right.shift; l || r end
+        l = l.to_s.ljust(width) + ' ' + r if r && !r.empty?
+        yield(indent + l)
+      end
+
+      self
+    end
+
+    def add_banner(to) # :nodoc:
+      unless @short || @long
+        s = desc.join
+        to << ' [' + s + ']...' unless s.empty?
+      end
+      to
+    end
+
+    def match_nonswitch?(str) # :nodoc:
+      @pattern =~ str unless @short || @long
+    end
+
+    #
+    # Main name of the switch.
+    #
+    def switch_name
+      (long.first || short.first).sub(/\A-+(?:\[no-\])?/, '')
+    end
+
+    def compsys(sdone, ldone) # :nodoc:
+      sopts, lopts = [], []
+      @short.each { |s| sdone.fetch(s) { sopts << s }; sdone[s] = true } if @short
+      @long.each { |s| ldone.fetch(s) { lopts << s }; ldone[s] = true } if @long
+      return if sopts.empty? && lopts.empty? # completely hidden
+
+      (sopts + lopts).each do |opt|
+        # "(-x -c -r)-l[left justify]"
+        if /^--\[no-\](.+)$/ =~ opt
+          o = Regexp.last_match(1)
+          yield("--#{o}", desc.join(''))
+          yield("--no-#{o}", desc.join(''))
+        else
+          yield(opt.to_s, desc.join(''))
+        end
+      end
+    end
+
+    #
+    # Switch that takes no arguments.
+    #
+    class NoArgument < self
+      #
+      # Raises an exception if any arguments given.
+      #
+      def parse(arg, argv)
+        yield(NeedlessArgument, arg) if arg
+        conv_arg(arg)
+      end
+
+      def self.incompatible_argument_styles(*)
+      end
+
+      def self.pattern
+        Object
+      end
+    end
+
+    #
+    # Switch that takes an argument.
+    #
+    class RequiredArgument < self
+      #
+      # Raises an exception if argument is not present.
+      #
+      def parse(arg, argv)
+        unless arg
+          raise MissingArgument if argv.empty?
+          arg = argv.shift
+        end
+        conv_arg(*parse_arg(arg, &method(:raise)))
+      end
+    end
+
+    #
+    # Switch that can omit argument.
+    #
+    class OptionalArgument < self
+      #
+      # Parses argument if given, or uses default value.
+      #
+      def parse(arg, argv, &error)
+        if arg
+          conv_arg(*parse_arg(arg, &error))
+        else
+          conv_arg(arg)
+        end
+      end
+    end
+
+    #
+    # Switch that takes an argument, which does not begin with '-'.
+    #
+    class PlacedArgument < self
+      #
+      # Returns nil if argument is not present or begins with '-'.
+      #
+      def parse(arg, argv, &error)
+        if !(val = arg) && (argv.empty? || /\A-/ =~ (val = argv[0]))
+          return nil, block, nil
+        end
+        opt = (val = parse_arg(val, &error))[1]
+        val = conv_arg(*val)
+        if opt && !arg
+          argv.shift
+        else
+          val[0] = nil
+        end
+        val
+      end
+    end
+  end
+
+  #
+  # Simple option list providing mapping from short and/or long option
+  # string to OptionParser::Switch and mapping from acceptable argument to
+  # matching pattern and converter pair. Also provides summary feature.
+  #
+  class List
+    # Map from acceptable argument types to pattern and converter pairs.
+    attr_reader :atype
+
+    # Map from short style option switches to actual switch objects.
+    attr_reader :short
+
+    # Map from long style option switches to actual switch objects.
+    attr_reader :long
+
+    # List of all switches and summary string.
+    attr_reader :list
+
+    #
+    # Just initializes all instance variables.
+    #
+    def initialize
+      @atype = {}
+      @short = OptionMap.new
+      @long = OptionMap.new
+      @list = []
+    end
+
+    #
+    # See OptionParser.accept.
+    #
+    def accept(t, pat = /.*/m, &block)
+      if pat
+        pat.respond_to?(:match) ||
+          raise(TypeError, "has no `match'", ParseError.filter_backtrace(caller(2)))
+      else
+        pat = t if t.respond_to?(:match)
+      end
+      unless block
+        block = pat.method(:convert).to_proc if pat.respond_to?(:convert)
+      end
+      @atype[t] = [pat, block]
+    end
+
+    #
+    # See OptionParser.reject.
+    #
+    def reject(t)
+      @atype.delete(t)
+    end
+
+    #
+    # Adds +sw+ according to +sopts+, +lopts+ and +nlopts+.
+    #
+    # +sw+::     OptionParser::Switch instance to be added.
+    # +sopts+::  Short style option list.
+    # +lopts+::  Long style option list.
+    # +nlopts+:: Negated long style options list.
+    #
+    def update(sw, sopts, lopts, nsw = nil, nlopts = nil) # :nodoc:
+      sopts.each { |o| @short[o] = sw } if sopts
+      lopts.each { |o| @long[o] = sw } if lopts
+      nlopts.each { |o| @long[o] = nsw } if nsw && nlopts
+      used = @short.invert.update(@long.invert)
+      @list.delete_if { |o| (Switch === o) && !used[o] }
+    end
+    private :update
+
+    #
+    # Inserts +switch+ at the head of the list, and associates short, long
+    # and negated long options. Arguments are:
+    #
+    # +switch+::      OptionParser::Switch instance to be inserted.
+    # +short_opts+::  List of short style options.
+    # +long_opts+::   List of long style options.
+    # +nolong_opts+:: List of long style options with "no-" prefix.
+    #
+    #   prepend(switch, short_opts, long_opts, nolong_opts)
+    #
+    def prepend(*args)
+      update(*args)
+      @list.unshift(args[0])
+    end
+
+    #
+    # Appends +switch+ at the tail of the list, and associates short, long
+    # and negated long options. Arguments are:
+    #
+    # +switch+::      OptionParser::Switch instance to be inserted.
+    # +short_opts+::  List of short style options.
+    # +long_opts+::   List of long style options.
+    # +nolong_opts+:: List of long style options with "no-" prefix.
+    #
+    #   append(switch, short_opts, long_opts, nolong_opts)
+    #
+    def append(*args)
+      update(*args)
+      @list.push(args[0])
+    end
+
+    #
+    # Searches +key+ in +id+ list. The result is returned or yielded if a
+    # block is given. If it isn't found, nil is returned.
+    #
+    def search(id, key)
+      if list = __send__(id)
+        val = list.fetch(key) { return nil }
+        block_given? ? yield(val) : val
+      end
+    end
+
+    #
+    # Searches list +id+ for +opt+ and the optional patterns for completion
+    # +pat+. If +icase+ is true, the search is case insensitive. The result
+    # is returned or yielded if a block is given. If it isn't found, nil is
+    # returned.
+    #
+    def complete(id, opt, icase = false, *pat, &block)
+      __send__(id).complete(opt, icase, *pat, &block)
+    end
+
+    def get_candidates(id)
+      yield __send__(id).keys
+    end
+
+    #
+    # Iterates over each option, passing the option to the +block+.
+    #
+    def each_option(&block)
+      list.each(&block)
+    end
+
+    #
+    # Creates the summary table, passing each line to the +block+ (without
+    # newline). The arguments +args+ are passed along to the summarize
+    # method which is called on every option.
+    #
+    def summarize(*args, &block)
+      sum = []
+      list.reverse_each do |opt|
+        if opt.respond_to?(:summarize) # perhaps OptionParser::Switch
+          s = []
+          opt.summarize(*args) { |l| s << l }
+          sum.concat(s.reverse)
+        elsif !opt || opt.empty?
+          sum << ''
+        elsif opt.respond_to?(:each_line)
+          sum.concat([*opt.each_line].reverse)
+        else
+          sum.concat([*opt.each].reverse)
+        end
+      end
+      sum.reverse_each(&block)
+    end
+
+    def add_banner(to) # :nodoc:
+      list.each do |opt|
+        if opt.respond_to?(:add_banner)
+          opt.add_banner(to)
+        end
+      end
+      to
+    end
+
+    def compsys(*args, &block) # :nodoc:
+      list.each do |opt|
+        if opt.respond_to?(:compsys)
+          opt.compsys(*args, &block)
+        end
+      end
+    end
+  end
+
+  #
+  # Hash with completion search feature. See OptionParser::Completion.
+  #
+  class CompletingHash < Hash
+    include Completion
+
+    #
+    # Completion for hash key.
+    #
+    def match(key)
+      *values = fetch(key) do
+        raise AmbiguousArgument, catch(:ambiguous) { return complete(key) }
+      end
+      [key, *values]
+    end
+  end
+
+  # :stopdoc:
+
+  #
+  # Enumeration of acceptable argument styles. Possible values are:
+  #
+  # NO_ARGUMENT::       The switch takes no arguments. (:NONE)
+  # REQUIRED_ARGUMENT:: The switch requires an argument. (:REQUIRED)
+  # OPTIONAL_ARGUMENT:: The switch requires an optional argument. (:OPTIONAL)
+  #
+  # Use like --switch=argument (long style) or -Xargument (short style). For
+  # short style, only portion matched to argument pattern is treated as
+  # argument.
+  #
+  ArgumentStyle = {}
+  NoArgument.each { |el| ArgumentStyle[el] = Switch::NoArgument }
+  RequiredArgument.each { |el| ArgumentStyle[el] = Switch::RequiredArgument }
+  OptionalArgument.each { |el| ArgumentStyle[el] = Switch::OptionalArgument }
+  ArgumentStyle.freeze
+
+  #
+  # Switches common used such as '--', and also provides default
+  # argument classes
+  #
+  DefaultList = List.new
+  DefaultList.short['-'] = Switch::NoArgument.new {}
+  DefaultList.long[''] = Switch::NoArgument.new { throw :terminate }
+
+
+  COMPSYS_HEADER = <<'XXX'      # :nodoc:
+
+typeset -A opt_args
+local context state line
+
+_arguments -s -S \
+XXX
+
+  def compsys(to, name = File.basename($0)) # :nodoc:
+    to << "#compdef #{name}\n"
+    to << COMPSYS_HEADER
+    visit(:compsys, {}, {}) do |o, d|
+      to << %[  "#{o}[#{d.gsub(/[\"\[\]]/, '\\\\\&')}]" \\\n]
+    end
+    to << "  '*:file:_files' && return 0\n"
+  end
+
+  #
+  # Default options for ARGV, which never appear in option summary.
+  #
+  Officious = {}
+
+  #
+  # --help
+  # Shows option summary.
+  #
+  Officious['help'] = proc do |parser|
+    Switch::NoArgument.new do |arg|
+      puts parser.help
+      exit
+    end
+  end
+
+  #
+  # --*-completion-bash=WORD
+  # Shows candidates for command line completion.
+  #
+  Officious['*-completion-bash'] = proc do |parser|
+    Switch::RequiredArgument.new do |arg|
+      puts parser.candidate(arg)
+      exit
+    end
+  end
+
+  #
+  # --*-completion-zsh[=NAME:FILE]
+  # Creates zsh completion file.
+  #
+  Officious['*-completion-zsh'] = proc do |parser|
+    Switch::OptionalArgument.new do |arg|
+      parser.compsys(STDOUT, arg)
+      exit
+    end
+  end
+
+  #
+  # --version
+  # Shows version string if Version is defined.
+  #
+  Officious['version'] = proc do |parser|
+    Switch::OptionalArgument.new do |pkg|
+      if pkg
+        begin
+          require 'optparse/version'
+        rescue LoadError
+        else
+          show_version(*pkg.split(/,/)) ||
+            abort("#{parser.program_name}: no version found in package #{pkg}")
+          exit
+        end
+      end
+      (v = parser.ver) || abort("#{parser.program_name}: version unknown")
+      puts v
+      exit
+    end
+  end
+
+  # :startdoc:
+
+  #
+  # Class methods
+  #
+
+  #
+  # Initializes a new instance and evaluates the optional block in context
+  # of the instance. Arguments +args+ are passed to #new, see there for
+  # description of parameters.
+  #
+  # This method is *deprecated*, its behavior corresponds to the older #new
+  # method.
+  #
+  def self.with(*args, &block)
+    opts = new(*args)
+    opts.instance_eval(&block)
+    opts
+  end
+
+  #
+  # Returns an incremented value of +default+ according to +arg+.
+  #
+  def self.inc(arg, default = nil)
+    case arg
+    when Integer
+      arg.nonzero?
+    when nil
+      default.to_i + 1
+    end
+  end
+
+  def inc(*args)
+    self.class.inc(*args)
+  end
+
+  #
+  # Initializes the instance and yields itself if called with a block.
+  #
+  # +banner+:: Banner message.
+  # +width+::  Summary width.
+  # +indent+:: Summary indent.
+  #
+  def initialize(banner = nil, width = 32, indent = ' ' * 4)
+    @stack = [DefaultList, List.new, List.new]
+    @program_name = nil
+    @banner = banner
+    @summary_width = width
+    @summary_indent = indent
+    @default_argv = ARGV
+    @require_exact = false
+    add_officious
+    yield self if block_given?
+  end
+
+  def add_officious # :nodoc:
+    list = base
+    Officious.each do |opt, block|
+      list.long[opt] ||= block.call(self)
+    end
+  end
+
+  #
+  # Terminates option parsing. Optional parameter +arg+ is a string pushed
+  # back to be the first non-option argument.
+  #
+  def terminate(arg = nil)
+    self.class.terminate(arg)
+  end
+
+  def self.terminate(arg = nil)
+    throw :terminate, arg
+  end
+
+  @stack = [DefaultList]
+  def self.top
+    DefaultList
+  end
+
+  #
+  # Directs to accept specified class +t+. The argument string is passed to
+  # the block in which it should be converted to the desired class.
+  #
+  # +t+::   Argument class specifier, any object including Class.
+  # +pat+:: Pattern for argument, defaults to +t+ if it responds to match.
+  #
+  #   accept(t, pat, &block)
+  #
+  def accept(*args, &blk)
+    top.accept(*args, &blk)
+  end
+
+  #
+  # See #accept.
+  #
+  def self.accept(*args, &blk)
+    top.accept(*args, &blk)
+  end
+
+  #
+  # Directs to reject specified class argument.
+  #
+  # +t+:: Argument class specifier, any object including Class.
+  #
+  #   reject(t)
+  #
+  def reject(*args, &blk)
+    top.reject(*args, &blk)
+  end
+
+  #
+  # See #reject.
+  #
+  def self.reject(*args, &blk)
+    top.reject(*args, &blk)
+  end
+
+  #
+  # Instance methods
+  #
+
+  # Heading banner preceding summary.
+  attr_writer :banner
+
+  # Program name to be emitted in error message and default banner,
+  # defaults to $0.
+  attr_writer :program_name
+
+  # Width for option list portion of summary. Must be Numeric.
+  attr_accessor :summary_width
+
+  # Indentation for summary. Must be String (or have + String method).
+  attr_accessor :summary_indent
+
+  # Strings to be parsed in default.
+  attr_accessor :default_argv
+
+  # Whether to require that options match exactly (disallows providing
+  # abbreviated long option as short option).
+  attr_accessor :require_exact
+
+  #
+  # Heading banner preceding summary.
+  #
+  def banner
+    unless @banner
+      @banner = +"Usage: #{program_name} [options]"
+      visit(:add_banner, @banner)
+    end
+    @banner
+  end
+
+  #
+  # Program name to be emitted in error message and default banner, defaults
+  # to $0.
+  #
+  def program_name
+    @program_name || File.basename($0, '.*')
+  end
+
+  # for experimental cascading :-)
+  alias set_banner banner=
+  alias set_program_name program_name=
+  alias set_summary_width summary_width=
+  alias set_summary_indent summary_indent=
+
+  # Version
+  attr_writer :version
+  # Release code
+  attr_writer :release
+
+  #
+  # Version
+  #
+  def version
+    (defined?(@version) && @version) || (defined?(::Version) && ::Version)
+  end
+
+  #
+  # Release code
+  #
+  def release
+    (defined?(@release) && @release) || (defined?(::Release) && ::Release) || (defined?(::RELEASE) && ::RELEASE)
+  end
+
+  #
+  # Returns version string from program_name, version and release.
+  #
+  def ver
+    if v = version
+      str = +"#{program_name} #{[v].join('.')}"
+      str << " (#{v})" if v = release
+      str
+    end
+  end
+
+  def warn(mesg = $!)
+    super("#{program_name}: #{mesg}")
+  end
+
+  def abort(mesg = $!)
+    super("#{program_name}: #{mesg}")
+  end
+
+  #
+  # Subject of #on / #on_head, #accept / #reject
+  #
+  def top
+    @stack[-1]
+  end
+
+  #
+  # Subject of #on_tail.
+  #
+  def base
+    @stack[1]
+  end
+
+  #
+  # Pushes a new List.
+  #
+  def new
+    @stack.push(List.new)
+    if block_given?
+      yield self
+    else
+      self
+    end
+  end
+
+  #
+  # Removes the last List.
+  #
+  def remove
+    @stack.pop
+  end
+
+  #
+  # Puts option summary into +to+ and returns +to+. Yields each line if
+  # a block is given.
+  #
+  # +to+:: Output destination, which must have method <<. Defaults to [].
+  # +width+:: Width of left side, defaults to @summary_width.
+  # +max+:: Maximum length allowed for left side, defaults to +width+ - 1.
+  # +indent+:: Indentation, defaults to @summary_indent.
+  #
+  def summarize(to = [], width = @summary_width, max = width - 1, indent = @summary_indent, &blk)
+    nl = "\n"
+    blk ||= proc { |l| to << (l.index(nl, -1) ? l : l + nl) }
+    visit(:summarize, {}, {}, width, max, indent, &blk)
+    to
+  end
+
+  #
+  # Returns option summary string.
+  #
+  def help
+    summarize([banner.to_s.sub(/\n?\z/, "\n")]).join
+  end
+  alias to_s help
+
+  #
+  # Returns option summary list.
+  #
+  def to_a
+    summarize([banner.to_s.split(/^/)]).join
+  end
+
+  #
+  # Checks if an argument is given twice, in which case an ArgumentError is
+  # raised. Called from OptionParser#switch only.
+  #
+  # +obj+:: New argument.
+  # +prv+:: Previously specified argument.
+  # +msg+:: Exception message.
+  #
+  def notwice(obj, prv, msg) # :nodoc:
+    unless !prv || (prv == obj)
+      raise(ArgumentError, "argument #{msg} given twice: #{obj}",
+        ParseError.filter_backtrace(caller(2))
+      )
+    end
+    obj
+  end
+  private :notwice
+
+  SPLAT_PROC = proc { |*a| a.length <= 1 ? a.first : a } # :nodoc:
+
+  # :call-seq:
+  #   make_switch(params, block = nil)
+  #
+  # :include: ../doc/optparse/creates_option.rdoc
+  #
+  def make_switch(opts, block = nil)
+    short, long, nolong, style, pattern, conv, not_pattern, not_conv, not_style = [], [], []
+    ldesc, sdesc, desc, arg = [], [], []
+    default_style = Switch::NoArgument
+    default_pattern = nil
+    klass = nil
+    q, a = nil
+    has_arg = false
+
+    opts.each do |o|
+      # argument class
+      next if search(:atype, o) do |pat, c|
+        klass = notwice(o, klass, 'type')
+        if not_style && (not_style != Switch::NoArgument)
+          not_pattern, not_conv = pat, c
+        else
+          default_pattern, conv = pat, c
+        end
+      end
+
+      # directly specified pattern(any object possible to match)
+      if !(String === o || Symbol === o) && o.respond_to?(:match)
+        pattern = notwice(o, pattern, 'pattern')
+        if pattern.respond_to?(:convert)
+          conv = pattern.method(:convert).to_proc
+        else
+          conv = SPLAT_PROC
+        end
+        next
+      end
+
+      # anything others
+      case o
+      when Proc, Method
+        block = notwice(o, block, 'block')
+      when Array, Hash
+        case pattern
+        when CompletingHash
+        when nil
+          pattern = CompletingHash.new
+          conv = pattern.method(:convert).to_proc if pattern.respond_to?(:convert)
+        else
+          raise ArgumentError, 'argument pattern given twice'
+        end
+        o.each { |pat, *v| pattern[pat] = v.fetch(0) { pat } }
+      when Module
+        raise ArgumentError, "unsupported argument type: #{o}", ParseError.filter_backtrace(caller(4))
+      when *ArgumentStyle.keys
+        style = notwice(ArgumentStyle[o], style, 'style')
+      when /^--no-([^\[\]=\s]*)(.+)?/
+        q, a = Regexp.last_match(1), Regexp.last_match(2)
+        o = notwice(a ? Object : TrueClass, klass, 'type')
+        not_pattern, not_conv = search(:atype, o) unless not_style
+        not_style = (not_style || default_style).guess(arg = a) if a
+        default_style = Switch::NoArgument
+        default_pattern, conv = search(:atype, FalseClass) unless default_pattern
+        ldesc << "--no-#{q}"
+        q = q.downcase.tr('_', '-')
+        long << "no-#{q}"
+        nolong << q
+      when /^--\[no-\]([^\[\]=\s]*)(.+)?/
+        q, a = Regexp.last_match(1), Regexp.last_match(2)
+        o = notwice(a ? Object : TrueClass, klass, 'type')
+        if a
+          default_style = default_style.guess(arg = a)
+          default_pattern, conv = search(:atype, o) unless default_pattern
+        end
+        ldesc << "--[no-]#{q}"
+        o = q.downcase.tr('_', '-')
+        long << o
+        not_pattern, not_conv = search(:atype, FalseClass) unless not_style
+        not_style = Switch::NoArgument
+        nolong << "no-#{o}"
+      when /^--([^\[\]=\s]*)(.+)?/
+        q, a = Regexp.last_match(1), Regexp.last_match(2)
+        if a
+          o = notwice(NilClass, klass, 'type')
+          default_style = default_style.guess(arg = a)
+          default_pattern, conv = search(:atype, o) unless default_pattern
+        end
+        ldesc << "--#{q}"
+        # Opal patch:
+        o = q.downcase.tr('_', '-')
+        long << o
+      when /^-(\[\^?\]?(?:[^\\\]]|\\.)*\])(.+)?/
+        q, a = Regexp.last_match(1), Regexp.last_match(2)
+        o = notwice(Object, klass, 'type')
+        if a
+          default_style = default_style.guess(arg = a)
+          default_pattern, conv = search(:atype, o) unless default_pattern
+        else
+          has_arg = true
+        end
+        sdesc << "-#{q}"
+        short << Regexp.new(q)
+      when /^-(.)(.+)?/
+        q, a = Regexp.last_match(1), Regexp.last_match(2)
+        if a
+          o = notwice(NilClass, klass, 'type')
+          default_style = default_style.guess(arg = a)
+          default_pattern, conv = search(:atype, o) unless default_pattern
+        end
+        sdesc << "-#{q}"
+        short << q
+      when /^=/
+        style = notwice(default_style.guess(arg = o), style, 'style')
+        default_pattern, conv = search(:atype, Object) unless default_pattern
+      else
+        desc.push(o)
+      end
+    end
+
+    default_pattern, conv = search(:atype, default_style.pattern) unless default_pattern
+    if !(short.empty? && long.empty?)
+      if has_arg && (default_style == Switch::NoArgument)
+        default_style = Switch::RequiredArgument
+      end
+      s = (style || default_style).new(pattern || default_pattern,
+        conv, sdesc, ldesc, arg, desc, block
+      )
+    elsif !block
+      if style || pattern
+        raise ArgumentError, 'no switch given', ParseError.filter_backtrace(caller)
+      end
+      s = desc
+    else
+      short << pattern
+      s = (style || default_style).new(pattern,
+        conv, nil, nil, arg, desc, block
+      )
+    end
+    [s, short, long,
+     (not_style.new(not_pattern, not_conv, sdesc, ldesc, nil, desc, block) if not_style),
+     nolong]
+  end
+
+  # :call-seq:
+  #   define(*params, &block)
+  #
+  # :include: ../doc/optparse/creates_option.rdoc
+  #
+  def define(*opts, &block)
+    top.append(*(sw = make_switch(opts, block)))
+    sw[0]
+  end
+
+  # :call-seq:
+  #   on(*params, &block)
+  #
+  # :include: ../doc/optparse/creates_option.rdoc
+  #
+  def on(*opts, &block)
+    define(*opts, &block)
+    self
+  end
+  alias def_option define
+
+  # :call-seq:
+  #   define_head(*params, &block)
+  #
+  # :include: ../doc/optparse/creates_option.rdoc
+  #
+  def define_head(*opts, &block)
+    top.prepend(*(sw = make_switch(opts, block)))
+    sw[0]
+  end
+
+  # :call-seq:
+  #   on_head(*params, &block)
+  #
+  # :include: ../doc/optparse/creates_option.rdoc
+  #
+  # The new option is added at the head of the summary.
+  #
+  def on_head(*opts, &block)
+    define_head(*opts, &block)
+    self
+  end
+  alias def_head_option define_head
+
+  # :call-seq:
+  #   define_tail(*params, &block)
+  #
+  # :include: ../doc/optparse/creates_option.rdoc
+  #
+  def define_tail(*opts, &block)
+    base.append(*(sw = make_switch(opts, block)))
+    sw[0]
+  end
+
+  #
+  # :call-seq:
+  #   on_tail(*params, &block)
+  #
+  # :include: ../doc/optparse/creates_option.rdoc
+  #
+  # The new option is added at the tail of the summary.
+  #
+  def on_tail(*opts, &block)
+    define_tail(*opts, &block)
+    self
+  end
+  alias def_tail_option define_tail
+
+  #
+  # Add separator in summary.
+  #
+  def separator(string)
+    top.append(string, nil, nil)
+  end
+
+  #
+  # Parses command line arguments +argv+ in order. When a block is given,
+  # each non-option argument is yielded. When optional +into+ keyword
+  # argument is provided, the parsed option values are stored there via
+  # <code>[]=</code> method (so it can be Hash, or OpenStruct, or other
+  # similar object).
+  #
+  # Returns the rest of +argv+ left unparsed.
+  #
+  def order(*argv, into: nil, &nonopt)
+    argv = argv[0].dup if (argv.size == 1) && (Array === argv[0])
+    order!(argv, into: into, &nonopt)
+  end
+
+  #
+  # Same as #order, but removes switches destructively.
+  # Non-option arguments remain in +argv+.
+  #
+  def order!(argv = default_argv, into: nil, &nonopt)
+    setter = ->(name, val) { into[name.to_sym] = val } if into
+    parse_in_order(argv, setter, &nonopt)
+  end
+
+  def parse_in_order(argv = default_argv, setter = nil, &nonopt) # :nodoc:
+    opt, arg, val, rest = nil
+    nonopt ||= proc { |a| throw :terminate, a }
+    argv.unshift(arg) if arg = catch(:terminate) do
+      while arg = argv.shift
+        case arg
+        # long option
+        when /\A--([^=]*)(?:=(.*))?/m
+          opt, rest = Regexp.last_match(1), Regexp.last_match(2)
+          opt = opt.tr('_', '-')
+          begin
+            sw, = complete(:long, opt, true)
+            if require_exact && !sw.long.include?(arg)
+              raise InvalidOption, arg
+            end
+          rescue ParseError
+            raise $!.set_option(arg, true)
+          end
+          begin
+            opt, cb, val = sw.parse(rest, argv) { |*exc| raise(*exc) }
+            val = cb.call(val) if cb
+            setter.call(sw.switch_name, val) if setter
+          rescue ParseError
+            raise $!.set_option(arg, rest)
+          end
+
+        # short option
+        when /\A-(.)((=).*|.+)?/m
+          eq, rest, opt = Regexp.last_match(3), Regexp.last_match(2), Regexp.last_match(1)
+          has_arg, val = eq, rest
+          begin
+            sw, = search(:short, opt)
+            unless sw
+              begin
+                sw, = complete(:short, opt)
+                # short option matched.
+                val = arg.delete_prefix('-')
+                has_arg = true
+              rescue InvalidOption
+                raise if require_exact
+                # if no short options match, try completion with long
+                # options.
+                sw, = complete(:long, opt)
+                eq ||= !rest
+              end
+            end
+          rescue ParseError
+            raise $!.set_option(arg, true)
+          end
+          begin
+            opt, cb, val = sw.parse(val, argv) { |*exc| raise(*exc) if eq }
+          rescue ParseError
+            raise $!.set_option(arg, arg.length > 2)
+          else
+            raise InvalidOption, arg if has_arg && !eq && (arg == "-#{opt}")
+          end
+          begin
+            argv.unshift(opt) if opt && (!rest || ((opt = opt.sub(/\A-*/, '-')) != '-'))
+            val = cb.call(val) if cb
+            setter.call(sw.switch_name, val) if setter
+          rescue ParseError
+            raise $!.set_option(arg, arg.length > 2)
+          end
+
+        # non-option argument
+        else
+          catch(:prune) do
+            visit(:each_option) do |sw0|
+              sw = sw0
+              sw.block.call(arg) if (Switch === sw) && sw.match_nonswitch?(arg)
+            end
+            nonopt.call(arg)
+          end
+        end
+      end
+
+      nil
+    end
+
+    visit(:search, :short, nil) { |sw| sw.block.call(*argv) unless sw.pattern }
+
+    argv
+  end
+  private :parse_in_order
+
+  #
+  # Parses command line arguments +argv+ in permutation mode and returns
+  # list of non-option arguments. When optional +into+ keyword
+  # argument is provided, the parsed option values are stored there via
+  # <code>[]=</code> method (so it can be Hash, or OpenStruct, or other
+  # similar object).
+  #
+  def permute(*argv, into: nil)
+    argv = argv[0].dup if (argv.size == 1) && (Array === argv[0])
+    permute!(argv, into: into)
+  end
+
+  #
+  # Same as #permute, but removes switches destructively.
+  # Non-option arguments remain in +argv+.
+  #
+  def permute!(argv = default_argv, into: nil)
+    nonopts = []
+    order!(argv, into: into, &nonopts.method(:<<))
+    argv[0, 0] = nonopts
+    argv
+  end
+
+  #
+  # Parses command line arguments +argv+ in order when environment variable
+  # POSIXLY_CORRECT is set, and in permutation mode otherwise.
+  # When optional +into+ keyword argument is provided, the parsed option
+  # values are stored there via <code>[]=</code> method (so it can be Hash,
+  # or OpenStruct, or other similar object).
+  #
+  def parse(*argv, into: nil)
+    argv = argv[0].dup if (argv.size == 1) && (Array === argv[0])
+    parse!(argv, into: into)
+  end
+
+  #
+  # Same as #parse, but removes switches destructively.
+  # Non-option arguments remain in +argv+.
+  #
+  def parse!(argv = default_argv, into: nil)
+    if ENV.include?('POSIXLY_CORRECT')
+      order!(argv, into: into)
+    else
+      permute!(argv, into: into)
+    end
+  end
+
+  #
+  # Wrapper method for getopts.rb.
+  #
+  #   params = ARGV.getopts("ab:", "foo", "bar:", "zot:Z;zot option")
+  #   # params["a"] = true   # -a
+  #   # params["b"] = "1"    # -b1
+  #   # params["foo"] = "1"  # --foo
+  #   # params["bar"] = "x"  # --bar x
+  #   # params["zot"] = "z"  # --zot Z
+  #
+  def getopts(*args)
+    argv = Array === args.first ? args.shift : default_argv
+    single_options, *long_options = *args
+
+    result = {}
+
+    if single_options
+      single_options.scan(/(.)(:)?/) do |opt, val|
+        if val
+          result[opt] = nil
+          define("-#{opt} VAL")
+        else
+          result[opt] = false
+          define("-#{opt}")
+        end
+      end
+    end
+
+    long_options.each do |arg|
+      arg, desc = arg.split(';', 2)
+      opt, val = arg.split(':', 2)
+      if val
+        result[opt] = val.empty? ? nil : val
+        define("--#{opt}=#{result[opt] || 'VAL'}", *[desc].compact)
+      else
+        result[opt] = false
+        define("--#{opt}", *[desc].compact)
+      end
+    end
+
+    parse_in_order(argv, result.method(:[]=))
+    result
+  end
+
+  #
+  # See #getopts.
+  #
+  def self.getopts(*args)
+    new.getopts(*args)
+  end
+
+  #
+  # Traverses @stack, sending each element method +id+ with +args+ and
+  # +block+.
+  #
+  def visit(id, *args, &block) # :nodoc:
+    @stack.reverse_each do |el|
+      el.__send__(id, *args, &block)
+    end
+    nil
+  end
+  private :visit
+
+  #
+  # Searches +key+ in @stack for +id+ hash and returns or yields the result.
+  #
+  def search(id, key) # :nodoc:
+    block_given = block_given?
+    retval = nil
+    visit(:search, id, key) do |k|
+      retval = block_given ? yield(k) : k
+      break
+    end
+    retval
+  end
+  private :search
+
+  #
+  # Completes shortened long style option switch and returns pair of
+  # canonical switch and switch descriptor OptionParser::Switch.
+  #
+  # +typ+::   Searching table.
+  # +opt+::   Searching key.
+  # +icase+:: Search case insensitive if true.
+  # +pat+::   Optional pattern for completion.
+  #
+  def complete(typ, opt, icase = false, *pat) # :nodoc:
+    if pat.empty?
+      retval = nil
+      search(typ, opt) { |sw| retval = [sw, opt]; break } # exact match or...
+      return retval if retval
+    end
+    ambiguous = catch(:ambiguous) do
+      retval = nil
+      visit(:complete, typ, opt, icase, *pat) { |o, *sw| retval = sw; break }
+      return retval if retval
+    end
+    exc = ambiguous ? AmbiguousOption : InvalidOption
+    raise exc.new(opt, additional: method(:additional_message).curry[typ])
+  end
+  private :complete
+
+  #
+  # Returns additional info.
+  #
+  def additional_message(typ, opt)
+    return unless typ && opt && defined?(DidYouMean::SpellChecker)
+    all_candidates = []
+    visit(:get_candidates, typ) do |candidates|
+      all_candidates.concat(candidates)
+    end
+    all_candidates.select! { |cand| cand.is_a?(String) }
+    checker = DidYouMean::SpellChecker.new(dictionary: all_candidates)
+    DidYouMean.formatter.message_for(all_candidates & checker.correct(opt))
+  end
+
+  def candidate(word)
+    list = []
+    case word
+    when '-'
+      long = short = true
+    when /\A--/
+      word, arg = word.split(/=/, 2)
+      argpat = Completion.regexp(arg, false) if arg && !arg.empty?
+      long = true
+    when /\A-/
+      short = true
+    end
+    pat = Completion.regexp(word, long)
+    visit(:each_option) do |opt|
+      next unless Switch === opt
+      opts = (long ? opt.long : []) + (short ? opt.short : [])
+      opts = Completion.candidate(word, true, pat, &opts.method(:each)).map(&:first) if pat
+      if /\A=/ =~ opt.arg
+        opts.map! { |sw| sw + '=' }
+        if arg && (CompletingHash === opt.pattern)
+          if opts = opt.pattern.candidate(arg, false, argpat)
+            opts.map!(&:last)
+          end
+        end
+      end
+      list.concat(opts)
+    end
+    list
+  end
+
+  #
+  # Loads options from file names as +filename+. Does nothing when the file
+  # is not present. Returns whether successfully loaded.
+  #
+  # +filename+ defaults to basename of the program without suffix in a
+  # directory ~/.options, then the basename with '.options' suffix
+  # under XDG and Haiku standard places.
+  #
+  def load(filename = nil)
+    unless filename
+      basename = File.basename($0, '.*')
+      begin
+        return true if load(File.expand_path(basename, '~/.options'))
+      rescue
+        nil
+      end
+      basename << '.options'
+      return [
+        # XDG
+        ENV['XDG_CONFIG_HOME'],
+        '~/.config',
+        *ENV['XDG_CONFIG_DIRS']&.split(File::PATH_SEPARATOR),
+
+        # Haiku
+        '~/config/settings',
+      ].any? do |dir|
+        next if !dir || dir.empty?
+        begin
+          load(File.expand_path(basename, dir))
+        rescue
+          nil
+        end
+      end
+    end
+    begin
+      parse(*IO.readlines(filename).each(&:chomp!))
+      true
+    rescue Errno::ENOENT, Errno::ENOTDIR
+      false
+    end
+  end
+
+  #
+  # Parses environment variable +env+ or its uppercase with splitting like a
+  # shell.
+  #
+  # +env+ defaults to the basename of the program.
+  #
+  def environment(env = File.basename($0, '.*'))
+    (env = ENV[env] || ENV[env.upcase]) || return
+    require 'shellwords'
+    parse(*Shellwords.shellwords(env))
+  end
+
+  #
+  # Acceptable argument classes
+  #
+
+  #
+  # Any string and no conversion. This is fall-back.
+  #
+  accept(Object) { |s,| s || s.nil? }
+
+  accept(NilClass) { |s,| s }
+
+  #
+  # Any non-empty string, and no conversion.
+  #
+  accept(String, /.+/m) { |s, *| s }
+
+  #
+  # Ruby/C-like integer, octal for 0-7 sequence, binary for 0b, hexadecimal
+  # for 0x, and decimal for others; with optional sign prefix. Converts to
+  # Integer.
+  #
+  decimal = '\d+(?:_\d+)*'
+  binary = 'b[01]+(?:_[01]+)*'
+  hex = 'x[\da-f]+(?:_[\da-f]+)*'
+  octal = "0(?:[0-7]+(?:_[0-7]+)*|#{binary}|#{hex})?"
+  integer = "#{octal}|#{decimal}"
+
+  accept(Integer, %r"\A[-+]?(?:#{integer})\z"io) do |s,|
+    if s
+      begin
+        Integer(s)
+      rescue ArgumentError
+        raise OptionParser::InvalidArgument, s
+      end
+    end
+  end
+
+  #
+  # Float number format, and converts to Float.
+  #
+  float = "(?:#{decimal}(?=(.)?)(?:\\.(?:#{decimal})?)?|\\.#{decimal})(?:E[-+]?#{decimal})?"
+  floatpat = %r"\A[-+]?#{float}\z"io
+  accept(Float, floatpat) { |s,| s.to_f if s }
+
+  #
+  # Generic numeric format, converts to Integer for integer format, Float
+  # for float format, and Rational for rational format.
+  #
+  real = "[-+]?(?:#{octal}|#{float})"
+  accept(Numeric, /\A(#{real})(?:\/(#{real}))?\z/io) do |s, d, f, n,|
+    if n
+      Rational(d, n)
+    elsif f
+      Float(s)
+    else
+      Integer(s)
+    end
+  end
+
+  #
+  # Decimal integer format, to be converted to Integer.
+  #
+  DecimalInteger = /\A[-+]?#{decimal}\z/io
+  accept(DecimalInteger, DecimalInteger) do |s,|
+    if s
+      begin
+        Integer(s, 10)
+      rescue ArgumentError
+        raise OptionParser::InvalidArgument, s
+      end
+    end
+  end
+
+  #
+  # Ruby/C like octal/hexadecimal/binary integer format, to be converted to
+  # Integer.
+  #
+  OctalInteger = /\A[-+]?(?:[0-7]+(?:_[0-7]+)*|0(?:#{binary}|#{hex}))\z/io
+  accept(OctalInteger, OctalInteger) do |s,|
+    if s
+      begin
+        Integer(s, 8)
+      rescue ArgumentError
+        raise OptionParser::InvalidArgument, s
+      end
+    end
+  end
+
+  #
+  # Decimal integer/float number format, to be converted to Integer for
+  # integer format, Float for float format.
+  #
+  DecimalNumeric = floatpat # decimal integer is allowed as float also.
+  accept(DecimalNumeric, floatpat) do |s, f|
+    if s
+      begin
+        if f
+          Float(s)
+        else
+          Integer(s)
+        end
+      rescue ArgumentError
+        raise OptionParser::InvalidArgument, s
+      end
+    end
+  end
+
+  #
+  # Boolean switch, which means whether it is present or not, whether it is
+  # absent or not with prefix no-, or it takes an argument
+  # yes/no/true/false/+/-.
+  #
+  yesno = CompletingHash.new
+  %w[- no false].each { |el| yesno[el] = false }
+  %w[+ yes true].each { |el| yesno[el] = true }
+  yesno['nil'] = false # should be nil?
+  accept(TrueClass, yesno) { |arg, val| val.nil? || val }
+  #
+  # Similar to TrueClass, but defaults to false.
+  #
+  accept(FalseClass, yesno) { |arg, val| !val.nil? && val }
+
+  #
+  # List of strings separated by ",".
+  #
+  accept(Array) do |s,|
+    if s
+      s = s.split(',').collect { |ss| ss unless ss.empty? }
+    end
+    s
+  end
+
+  #
+  # Regular expression with options.
+  #
+  accept(Regexp, %r"\A/((?:\\.|[^\\])*)/([[:alpha:]]+)?\z|.*") do |all, s, o|
+    f = 0
+    if o
+      f |= Regexp::IGNORECASE if /i/ =~ o
+      f |= Regexp::MULTILINE if /m/ =~ o
+      f |= Regexp::EXTENDED if /x/ =~ o
+      k = o.delete('imx')
+      k = nil if k.empty?
+    end
+    Regexp.new(s || all, f, k)
+  end
+
+  #
+  # Exceptions
+  #
+
+  #
+  # Base class of exceptions from OptionParser.
+  #
+  class ParseError < RuntimeError
+    # Reason which caused the error.
+    Reason = 'parse error'
+
+    def initialize(*args, additional: nil)
+      @additional = additional
+      @arg0, = args
+      @args = args
+      @reason = nil
+    end
+
+    attr_reader :args
+    attr_writer :reason
+    attr_accessor :additional
+
+    #
+    # Pushes back erred argument(s) to +argv+.
+    #
+    def recover(argv)
+      argv[0, 0] = @args
+      argv
+    end
+
+    def self.filter_backtrace(array)
+      unless $DEBUG
+        array.delete_if(&%r"\A#{Regexp.quote(__FILE__)}:"o.method(:=~))
+      end
+      array
+    end
+
+    def set_backtrace(array)
+      super(self.class.filter_backtrace(array))
+    end
+
+    def set_option(opt, eq)
+      if eq
+        @args[0] = opt
+      else
+        @args.unshift(opt)
+      end
+      self
+    end
+
+    #
+    # Returns error reason. Override this for I18N.
+    #
+    def reason
+      @reason || self.class::Reason
+    end
+
+    def inspect
+      "#<#{self.class}: #{args.join(' ')}>"
+    end
+
+    #
+    # Default stringizing method to emit standard error message.
+    #
+    def message
+      "#{reason}: #{args.join(' ')}#{additional[@arg0] if additional}"
+    end
+
+    alias to_s message
+  end
+
+  #
+  # Raises when ambiguously completable string is encountered.
+  #
+  class AmbiguousOption < ParseError
+    const_set(:Reason, 'ambiguous option')
+  end
+
+  #
+  # Raises when there is an argument for a switch which takes no argument.
+  #
+  class NeedlessArgument < ParseError
+    const_set(:Reason, 'needless argument')
+  end
+
+  #
+  # Raises when a switch with mandatory argument has no argument.
+  #
+  class MissingArgument < ParseError
+    const_set(:Reason, 'missing argument')
+  end
+
+  #
+  # Raises when switch is undefined.
+  #
+  class InvalidOption < ParseError
+    const_set(:Reason, 'invalid option')
+  end
+
+  #
+  # Raises when the given argument does not match required format.
+  #
+  class InvalidArgument < ParseError
+    const_set(:Reason, 'invalid argument')
+  end
+
+  #
+  # Raises when the given argument word can't be completed uniquely.
+  #
+  class AmbiguousArgument < InvalidArgument
+    const_set(:Reason, 'ambiguous argument')
+  end
+
+  #
+  # Miscellaneous
+  #
+
+  #
+  # Extends command line arguments array (ARGV) to parse itself.
+  #
+  module Arguable
+    #
+    # Sets OptionParser object, when +opt+ is +false+ or +nil+, methods
+    # OptionParser::Arguable#options and OptionParser::Arguable#options= are
+    # undefined. Thus, there is no ways to access the OptionParser object
+    # via the receiver object.
+    #
+    def options=(opt)
+      unless @optparse = opt
+        class << self
+          undef_method(:options)
+          undef_method(:options=)
+        end
+      end
+    end
+
+    #
+    # Actual OptionParser object, automatically created if nonexistent.
+    #
+    # If called with a block, yields the OptionParser object and returns the
+    # result of the block. If an OptionParser::ParseError exception occurs
+    # in the block, it is rescued, a error message printed to STDERR and
+    # +nil+ returned.
+    #
+    def options
+      @optparse ||= OptionParser.new
+      @optparse.default_argv = self
+      block_given? || (return @optparse)
+      begin
+        yield @optparse
+      rescue ParseError
+        @optparse.warn $!
+        nil
+      end
+    end
+
+    #
+    # Parses +self+ destructively in order and returns +self+ containing the
+    # rest arguments left unparsed.
+    #
+    def order!(&blk)
+      options.order!(self, &blk)
+    end
+
+    #
+    # Parses +self+ destructively in permutation mode and returns +self+
+    # containing the rest arguments left unparsed.
+    #
+    def permute!
+      options.permute!(self)
+    end
+
+    #
+    # Parses +self+ destructively and returns +self+ containing the
+    # rest arguments left unparsed.
+    #
+    def parse!
+      options.parse!(self)
+    end
+
+    #
+    # Substitution of getopts is possible as follows. Also see
+    # OptionParser#getopts.
+    #
+    #   def getopts(*args)
+    #     ($OPT = ARGV.getopts(*args)).each do |opt, val|
+    #       eval "$OPT_#{opt.gsub(/[^A-Za-z0-9_]/, '_')} = val"
+    #     end
+    #   rescue OptionParser::ParseError
+    #   end
+    #
+    def getopts(*args)
+      options.getopts(self, *args)
+    end
+
+    #
+    # Initializes instance variable.
+    #
+    def self.extend_object(obj)
+      super
+      obj.instance_eval { @optparse = nil }
+    end
+
+    def initialize(*args)
+      super
+      @optparse = nil
+    end
+  end
+
+  #
+  # Acceptable argument classes. Now contains DecimalInteger, OctalInteger
+  # and DecimalNumeric. See Acceptable argument classes (in source code).
+  #
+  module Acceptables
+    const_set(:DecimalInteger, OptionParser::DecimalInteger)
+    const_set(:OctalInteger, OptionParser::OctalInteger)
+    const_set(:DecimalNumeric, OptionParser::DecimalNumeric)
+  end
+end
+
+# ARGV is arguable by OptionParser
+ARGV.extend(OptionParser::Arguable)
+
+# An alias for OptionParser.
+OptParse = OptionParser # :nodoc:
diff --git a/stdlib/optparse/ac.rb b/stdlib/optparse/ac.rb
new file mode 100644
index 00000000..6cff5740
--- /dev/null
+++ b/stdlib/optparse/ac.rb
@@ -0,0 +1,54 @@
+# frozen_string_literal: false
+require 'optparse'
+
+class OptionParser::AC < OptionParser
+  private
+
+  def _check_ac_args(name, block)
+    unless /\A\w[-\w]*\z/ =~ name
+      raise ArgumentError, name
+    end
+    unless block
+      raise ArgumentError, 'no block given', ParseError.filter_backtrace(caller)
+    end
+  end
+
+  ARG_CONV = proc { |val| val.nil? ? true : val }
+
+  def _ac_arg_enable(prefix, name, help_string, block)
+    _check_ac_args(name, block)
+
+    sdesc = []
+    ldesc = ["--#{prefix}-#{name}"]
+    desc = [help_string]
+    q = name.downcase
+    ac_block = proc { |val| block.call(ARG_CONV.call(val)) }
+    enable = Switch::PlacedArgument.new(nil, ARG_CONV, sdesc, ldesc, nil, desc, ac_block)
+    disable = Switch::NoArgument.new(nil, proc { false }, sdesc, ldesc, nil, desc, ac_block)
+    top.append(enable, [], ['enable-' + q], disable, ['disable-' + q])
+    enable
+  end
+
+  public
+
+  def ac_arg_enable(name, help_string, &block)
+    _ac_arg_enable('enable', name, help_string, block)
+  end
+
+  def ac_arg_disable(name, help_string, &block)
+    _ac_arg_enable('disable', name, help_string, block)
+  end
+
+  def ac_arg_with(name, help_string, &block)
+    _check_ac_args(name, block)
+
+    sdesc = []
+    ldesc = ["--with-#{name}"]
+    desc = [help_string]
+    q = name.downcase
+    with = Switch::PlacedArgument.new(*search(:atype, String), sdesc, ldesc, nil, desc, block)
+    without = Switch::NoArgument.new(nil, proc {}, sdesc, ldesc, nil, desc, block)
+    top.append(with, [], ['with-' + q], without, ['without-' + q])
+    with
+  end
+end
diff --git a/stdlib/optparse/date.rb b/stdlib/optparse/date.rb
new file mode 100644
index 00000000..32388a97
--- /dev/null
+++ b/stdlib/optparse/date.rb
@@ -0,0 +1,14 @@
+# frozen_string_literal: false
+require 'optparse'
+require 'date'
+
+OptionParser.accept(DateTime) do |s,|
+  DateTime.parse(s) if s
+rescue ArgumentError
+  raise OptionParser::InvalidArgument, s
+end
+OptionParser.accept(Date) do |s,|
+  Date.parse(s) if s
+rescue ArgumentError
+  raise OptionParser::InvalidArgument, s
+end
diff --git a/stdlib/optparse/kwargs.rb b/stdlib/optparse/kwargs.rb
new file mode 100644
index 00000000..5997c3e9
--- /dev/null
+++ b/stdlib/optparse/kwargs.rb
@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+require 'optparse'
+
+class OptionParser
+  # :call-seq:
+  #   define_by_keywords(options, method, **params)
+  #
+  # :include: ../../doc/optparse/creates_option.rdoc
+  #
+  def define_by_keywords(options, meth, **opts)
+    meth.parameters.each do |type, name|
+      case type
+      when :key, :keyreq
+        op, cl = *(type == :key ? %w"[ ]" : ['', ''])
+        define("--#{name}=#{op}#{name.upcase}#{cl}", *opts[name]) do |o|
+          options[name] = o
+        end
+      end
+    end
+    options
+  end
+end
diff --git a/stdlib/optparse/shellwords.rb b/stdlib/optparse/shellwords.rb
new file mode 100644
index 00000000..39843c74
--- /dev/null
+++ b/stdlib/optparse/shellwords.rb
@@ -0,0 +1,7 @@
+# frozen_string_literal: false
+# -*- ruby -*-
+
+require 'shellwords'
+require 'optparse'
+
+OptionParser.accept(Shellwords) { |s,| Shellwords.shellwords(s) }
diff --git a/stdlib/optparse/time.rb b/stdlib/optparse/time.rb
new file mode 100644
index 00000000..b7608178
--- /dev/null
+++ b/stdlib/optparse/time.rb
@@ -0,0 +1,15 @@
+# frozen_string_literal: false
+require 'optparse'
+require 'time'
+
+OptionParser.accept(Time) do |s,|
+  if s
+    (begin
+       Time.httpdate(s)
+     rescue
+       Time.parse(s)
+     end)
+  end
+rescue
+  raise OptionParser::InvalidArgument, s
+end
diff --git a/stdlib/optparse/uri.rb b/stdlib/optparse/uri.rb
new file mode 100644
index 00000000..1bbe2ca1
--- /dev/null
+++ b/stdlib/optparse/uri.rb
@@ -0,0 +1,7 @@
+# frozen_string_literal: false
+# -*- ruby -*-
+
+require 'optparse'
+require 'uri'
+
+OptionParser.accept(URI) { |s,| URI.parse(s) if s }
diff --git a/stdlib/optparse/version.rb b/stdlib/optparse/version.rb
new file mode 100644
index 00000000..2793f01a
--- /dev/null
+++ b/stdlib/optparse/version.rb
@@ -0,0 +1,69 @@
+# frozen_string_literal: false
+# OptionParser internal utility
+
+class << OptionParser
+  def show_version(*pkgs)
+    progname = ARGV.options.program_name
+    result = false
+    show = proc do |klass, cname, version|
+      str = progname.to_s
+      unless (klass == ::Object) && (cname == :VERSION)
+        version = version.join('.') if Array === version
+        str << ": #{klass}" unless klass == Object
+        str << " version #{version}"
+      end
+      %i[Release RELEASE].find do |rel|
+        if klass.const_defined?(rel)
+          str << " (#{klass.const_get(rel)})"
+        end
+      end
+      puts str
+      result = true
+    end
+    if (pkgs.size == 1) && (pkgs[0] == 'all')
+      search_const(::Object, /\AV(?:ERSION|ersion)\z/) do |klass, cname, version|
+        unless (cname[1] == 'e') && klass.const_defined?(:Version)
+          show.call(klass, cname.intern, version)
+        end
+      end
+    else
+      pkgs.each do |pkg|
+        pkg = pkg.split(/::|\//).inject(::Object) { |m, c| m.const_get(c) }
+        v = case
+            when pkg.const_defined?(:Version)
+              pkg.const_get(n = :Version)
+            when pkg.const_defined?(:VERSION)
+              pkg.const_get(n = :VERSION)
+            else
+              n = nil
+              'unknown'
+            end
+        show.call(pkg, n, v)
+      rescue NameError
+      end
+    end
+    result
+  end
+
+  def each_const(path, base = ::Object)
+    path.split(/::|\//).inject(base) do |klass, name|
+      raise NameError, path unless Module === klass
+      klass.constants.grep(/#{name}/i) do |c|
+        klass.const_defined?(c) || next
+        klass.const_get(c)
+      end
+    end
+  end
+
+  def search_const(klass, name)
+    klasses = [klass]
+    while klass = klasses.shift
+      klass.constants.each do |cname|
+        klass.const_defined?(cname) || next
+        const = klass.const_get(cname)
+        yield klass, cname, const if name === cname
+        klasses << const if (Module === const) && (const != ::Object)
+      end
+    end
+  end
+end
diff --git a/stdlib/ostruct.rb b/stdlib/ostruct.rb
new file mode 100644
index 00000000..fe626a19
--- /dev/null
+++ b/stdlib/ostruct.rb
@@ -0,0 +1,135 @@
+class OpenStruct
+  def initialize(hash = nil)
+    @table = {}
+
+    if hash
+      hash.each_pair do |key, value|
+        @table[new_ostruct_member(key)] = value
+      end
+    end
+  end
+
+  def [](name)
+    @table[name.to_sym]
+  end
+
+  def []=(name, value)
+    @table[new_ostruct_member(name)] = value
+  end
+
+  def method_missing(name, *args)
+    if args.length > 2
+      raise NoMethodError.new("undefined method `#{name}' for #<OpenStruct>", name)
+    end
+    if name.end_with? '='
+      if args.length != 1
+        raise ArgumentError, 'wrong number of arguments (0 for 1)'
+      end
+      @table[new_ostruct_member(name[0..-2])] = args[0]
+    else
+      @table[name.to_sym]
+    end
+  end
+
+  def respond_to_missing?(mid, include_private = false) # :nodoc:
+    mname = mid.to_s.chomp('=').to_sym
+    @table&.key?(mname) || super
+  end
+
+  def each_pair
+    return enum_for :each_pair unless block_given?
+
+    @table.each_pair do |pair|
+      yield pair
+    end
+  end
+
+  def ==(other)
+    return false unless other.is_a?(OpenStruct)
+
+    @table == other.instance_variable_get(:@table)
+  end
+
+  def ===(other)
+    return false unless other.is_a?(OpenStruct)
+
+    @table === other.instance_variable_get(:@table)
+  end
+
+  def eql?(other)
+    return false unless other.is_a?(OpenStruct)
+
+    @table.eql? other.instance_variable_get(:@table)
+  end
+
+  def to_h
+    @table.dup
+  end
+
+  def to_n
+    @table.to_n
+  end
+
+  def hash
+    @table.hash
+  end
+
+  attr_reader :table
+
+  def delete_field(name)
+    sym = name.to_sym
+    begin
+      singleton_class.__send__(:remove_method, sym, "#{sym}=")
+    rescue NameError
+    end
+    @table.delete sym
+  end
+
+  def new_ostruct_member(name)
+    name = name.to_sym
+    unless respond_to?(name)
+      define_singleton_method(name) { @table[name] }
+      define_singleton_method("#{name}=") { |x| @table[name] = x }
+    end
+    name
+  end
+
+  `var ostruct_ids;`
+
+  def inspect
+    %x{
+      var top = (ostruct_ids === undefined),
+          ostruct_id = #{__id__};
+    }
+    begin
+      result = "#<#{self.class}"
+      %x{
+        if (top) {
+          ostruct_ids = {};
+        }
+        if (ostruct_ids.hasOwnProperty(ostruct_id)) {
+          return result + ' ...>';
+        }
+        ostruct_ids[ostruct_id] = true;
+      }
+
+      result += ' ' if @table.any?
+
+      result += each_pair.map do |name, value|
+        "#{name}=#{value.inspect}"
+      end.join ', '
+
+      result += '>'
+
+      result
+    ensure
+      %x{
+        if (top) {
+          ostruct_ids = undefined;
+        }
+      }
+    end
+  end
+
+  alias to_s inspect
+end
diff --git a/stdlib/pathname.rb b/stdlib/pathname.rb
new file mode 100644
index 00000000..7aa27e73
--- /dev/null
+++ b/stdlib/pathname.rb
@@ -0,0 +1,225 @@
+require 'corelib/comparable'
+
+# Portions from Author:: Tanaka Akira <akr@m17n.org>
+class Pathname
+  include Comparable
+  SEPARATOR_PAT = /#{Regexp.quote File::SEPARATOR}/
+
+  def initialize(path)
+    if Pathname === path
+      @path = path.path.to_s
+    elsif path.respond_to?(:to_path)
+      @path = path.to_path
+    elsif path.is_a?(String)
+      @path = path
+    elsif path.nil?
+      raise TypeError, 'no implicit conversion of nil into String'
+    else
+      raise TypeError, "no implicit conversion of #{path.class} into String"
+    end
+    raise ArgumentError if @path == "\0"
+  end
+
+  def self.pwd
+    new(Dir.pwd)
+  end
+
+  attr_reader :path
+
+  def ==(other)
+    other.path == @path
+  end
+
+  def absolute?
+    !relative?
+  end
+
+  def relative?
+    path = @path
+    while (r = chop_basename(path))
+      path, = r
+    end
+    path == ''
+  end
+
+  def chop_basename(path) # :nodoc:
+    base = File.basename(path)
+    # ruby uses /^#{SEPARATOR_PAT}?$/o but having issues with interpolation
+    if Regexp.new("^#{Pathname::SEPARATOR_PAT.source}?$") =~ base
+      return nil
+    else
+      return path[0, path.rindex(base)], base
+    end
+  end
+
+  def root?
+    @path == '/'
+  end
+
+  def parent
+    new_path = @path.sub(%r{/([^/]+/?$)}, '')
+    new_path = absolute? ? '/' : '.' if new_path == ''
+    Pathname.new(new_path)
+  end
+
+  def sub(*args)
+    Pathname.new(@path.sub(*args))
+  end
+
+  def cleanpath
+    `return Opal.normalize(#{@path})`
+  end
+
+  def to_path
+    @path
+  end
+
+  def hash
+    @path
+  end
+
+  def expand_path
+    Pathname.new(File.expand_path(@path))
+  end
+
+  def +(other)
+    other = Pathname.new(other) unless Pathname === other
+    Pathname.new(plus(@path, other.to_s))
+  end
+
+  def plus(path1, path2) # -> path # :nodoc:
+    prefix2 = path2
+    index_list2 = []
+    basename_list2 = []
+    while (r2 = chop_basename(prefix2))
+      prefix2, basename2 = r2
+      index_list2.unshift prefix2.length
+      basename_list2.unshift basename2
+    end
+    return path2 if prefix2 != ''
+    prefix1 = path1
+    while true
+      while !basename_list2.empty? && basename_list2.first == '.'
+        index_list2.shift
+        basename_list2.shift
+      end
+      break unless (r1 = chop_basename(prefix1))
+      prefix1, basename1 = r1
+      next if basename1 == '.'
+      if basename1 == '..' || basename_list2.empty? || basename_list2.first != '..'
+        prefix1 += basename1
+        break
+      end
+      index_list2.shift
+      basename_list2.shift
+    end
+    r1 = chop_basename(prefix1)
+    if !r1 && /#{SEPARATOR_PAT}/ =~ File.basename(prefix1)
+      while !basename_list2.empty? && basename_list2.first == '..'
+        index_list2.shift
+        basename_list2.shift
+      end
+    end
+    if !basename_list2.empty?
+      suffix2 = path2[index_list2.first..-1]
+      r1 ? File.join(prefix1, suffix2) : prefix1 + suffix2
+    else
+      r1 ? prefix1 : File.dirname(prefix1)
+    end
+  end
+
+  def join(*args)
+    return self if args.empty?
+    result = args.pop
+    result = Pathname.new(result) unless Pathname === result
+    return result if result.absolute?
+    args.reverse_each do |arg|
+      arg = Pathname.new(arg) unless Pathname === arg
+      result = arg + result
+      return result if result.absolute?
+    end
+    self + result
+  end
+
+  def split
+    [dirname, basename]
+  end
+
+  def dirname
+    Pathname.new(File.dirname(@path))
+  end
+
+  def basename
+    Pathname.new(File.basename(@path))
+  end
+
+  def directory?
+    File.directory?(@path)
+  end
+
+  def extname
+    File.extname(@path)
+  end
+
+  def <=>(other)
+    path <=> other.path
+  end
+
+  SAME_PATHS = if File::FNM_SYSCASE.nonzero?
+                 # Avoid #zero? here because #casecmp can return nil.
+                 proc { |a, b| a.casecmp(b) == 0 }
+               else
+                 proc { |a, b| a == b }
+               end
+
+  def relative_path_from(base_directory)
+    dest_directory = cleanpath.to_s
+    base_directory = base_directory.cleanpath.to_s
+    dest_prefix = dest_directory
+    dest_names = []
+    while (r = chop_basename(dest_prefix))
+      dest_prefix, basename = r
+      dest_names.unshift basename if basename != '.'
+    end
+    base_prefix = base_directory
+    base_names = []
+    while (r = chop_basename(base_prefix))
+      base_prefix, basename = r
+      base_names.unshift basename if basename != '.'
+    end
+    unless SAME_PATHS[dest_prefix, base_prefix]
+      raise ArgumentError, "different prefix: #{dest_prefix.inspect} and #{base_directory.inspect}"
+    end
+    while !dest_names.empty? &&
+          !base_names.empty? &&
+          SAME_PATHS[dest_names.first, base_names.first]
+      dest_names.shift
+      base_names.shift
+    end
+    if base_names.include? '..'
+      raise ArgumentError, "base_directory has ..: #{base_directory.inspect}"
+    end
+    base_names.fill('..')
+    relpath_names = base_names + dest_names
+    if relpath_names.empty?
+      Pathname.new('.')
+    else
+      Pathname.new(File.join(*relpath_names))
+    end
+  end
+
+  def entries
+    Dir.entries(@path).map { |f| self.class.new(f) }
+  end
+
+  alias === ==
+  alias eql? ==
+  alias to_s to_path
+  alias to_str to_path
+end
+
+module Kernel
+  def Pathname(path)
+    Pathname.new(path)
+  end
+end
diff --git a/stdlib/pp.rb b/stdlib/pp.rb
new file mode 100644
index 00000000..dd8a7ddd
--- /dev/null
+++ b/stdlib/pp.rb
@@ -0,0 +1,616 @@
+# frozen_string_literal: true
+
+# Opal: load stdlib/thread.rb
+require 'thread'
+require 'stringio'
+require 'prettyprint'
+
+##
+# A pretty-printer for Ruby objects.
+#
+##
+# == What PP Does
+#
+# Standard output by #p returns this:
+#   #<PP:0x81fedf0 @genspace=#<Proc:0x81feda0>, @group_queue=#<PrettyPrint::GroupQueue:0x81fed3c @queue=[[#<PrettyPrint::Group:0x81fed78 @breakables=[], @depth=0, @break=false>], []]>, @buffer=[], @newline="\n", @group_stack=[#<PrettyPrint::Group:0x81fed78 @breakables=[], @depth=0, @break=false>], @buffer_width=0, @indent=0, @maxwidth=79, @output_width=2, @output=#<IO:0x8114ee4>>
+#
+# Pretty-printed output returns this:
+#   #<PP:0x81fedf0
+#    @buffer=[],
+#    @buffer_width=0,
+#    @genspace=#<Proc:0x81feda0>,
+#    @group_queue=
+#     #<PrettyPrint::GroupQueue:0x81fed3c
+#      @queue=
+#       [[#<PrettyPrint::Group:0x81fed78 @break=false, @breakables=[], @depth=0>],
+#        []]>,
+#    @group_stack=
+#     [#<PrettyPrint::Group:0x81fed78 @break=false, @breakables=[], @depth=0>],
+#    @indent=0,
+#    @maxwidth=79,
+#    @newline="\n",
+#    @output=#<IO:0x8114ee4>,
+#    @output_width=2>
+#
+##
+# == Usage
+#
+#   pp(obj)             #=> obj
+#   pp obj              #=> obj
+#   pp(obj1, obj2, ...) #=> [obj1, obj2, ...]
+#   pp()                #=> nil
+#
+# Output <tt>obj(s)</tt> to <tt>$></tt> in pretty printed format.
+#
+# It returns <tt>obj(s)</tt>.
+#
+##
+# == Output Customization
+#
+# To define a customized pretty printing function for your classes,
+# redefine method <code>#pretty_print(pp)</code> in the class.
+#
+# <code>#pretty_print</code> takes the +pp+ argument, which is an instance of the PP class.
+# The method uses #text, #breakable, #nest, #group and #pp to print the
+# object.
+#
+##
+# == Pretty-Print JSON
+#
+# To pretty-print JSON refer to JSON#pretty_generate.
+#
+##
+# == Author
+# Tanaka Akira <akr@fsij.org>
+
+class PP < PrettyPrint
+  # Outputs +obj+ to +out+ in pretty printed format of
+  # +width+ columns in width.
+  #
+  # If +out+ is omitted, <code>$></code> is assumed.
+  # If +width+ is omitted, 79 is assumed.
+  #
+  # PP.pp returns +out+.
+  def PP.pp(obj, out=$stdout, width=79)  # Opal: replace $> with $stdout
+    q = PP.new(out, width)
+    q.guard_inspect_key {q.pp obj}
+    q.flush
+    #$pp = q
+    out << "\n"
+  end
+
+  # Outputs +obj+ to +out+ like PP.pp but with no indent and
+  # newline.
+  #
+  # PP.singleline_pp returns +out+.
+  def PP.singleline_pp(obj, out=$stdout)  # Opal: replace $> with $stdout
+    q = SingleLine.new(out)
+    q.guard_inspect_key {q.pp obj}
+    q.flush
+    out
+  end
+
+  # :stopdoc:
+  def PP.mcall(obj, mod, meth, *args, &block)
+    mod.instance_method(meth).bind_call(obj, *args, &block)
+  end
+  # :startdoc:
+
+  @sharing_detection = false
+  class << self
+    # Returns the sharing detection flag as a boolean value.
+    # It is false by default.
+    attr_accessor :sharing_detection
+  end
+
+  module PPMethods
+
+    # Yields to a block
+    # and preserves the previous set of objects being printed.
+    def guard_inspect_key
+      if Thread.current[:__recursive_key__] == nil
+        Thread.current[:__recursive_key__] = {}.compare_by_identity
+      end
+
+      if Thread.current[:__recursive_key__][:inspect] == nil
+        Thread.current[:__recursive_key__][:inspect] = {}.compare_by_identity
+      end
+
+      save = Thread.current[:__recursive_key__][:inspect]
+
+      begin
+        Thread.current[:__recursive_key__][:inspect] = {}.compare_by_identity
+        yield
+      ensure
+        Thread.current[:__recursive_key__][:inspect] = save
+      end
+    end
+
+    # Check whether the object_id +id+ is in the current buffer of objects
+    # to be pretty printed. Used to break cycles in chains of objects to be
+    # pretty printed.
+    def check_inspect_key(id)
+      Thread.current[:__recursive_key__] &&
+      Thread.current[:__recursive_key__][:inspect] &&
+      Thread.current[:__recursive_key__][:inspect].include?(id)
+    end
+
+    # Adds the object_id +id+ to the set of objects being pretty printed, so
+    # as to not repeat objects.
+    def push_inspect_key(id)
+      Thread.current[:__recursive_key__][:inspect][id] = true
+    end
+
+    # Removes an object from the set of objects being pretty printed.
+    def pop_inspect_key(id)
+      Thread.current[:__recursive_key__][:inspect].delete id
+    end
+
+    # Adds +obj+ to the pretty printing buffer
+    # using Object#pretty_print or Object#pretty_print_cycle.
+    #
+    # Object#pretty_print_cycle is used when +obj+ is already
+    # printed, a.k.a the object reference chain has a cycle.
+    def pp(obj = undefined)
+      # Opal: consider JS-native variables:
+      %x{
+        if (obj === null) {
+          #{text "null"}
+          #{return}
+        }
+        else if (obj === undefined) {
+          #{text "undefined"}
+          #{return}
+        }
+        else if (obj.$$class === undefined) {
+          #{text `Object.prototype.toString.apply(obj)`}
+          #{return}
+        }
+      }
+
+      # If obj is a Delegator then use the object being delegated to for cycle
+      # detection
+      obj = obj.__getobj__ if defined?(::Delegator) and obj.is_a?(::Delegator)
+
+      if check_inspect_key(obj)
+        group {obj.pretty_print_cycle self}
+        return
+      end
+
+      begin
+        push_inspect_key(obj)
+        group {obj.pretty_print self}
+      ensure
+        pop_inspect_key(obj) unless PP.sharing_detection
+      end
+    end
+
+    # A convenience method which is same as follows:
+    #
+    #   group(1, '#<' + obj.class.name, '>') { ... }
+    def object_group(obj, &block) # :yield:
+      group(1, '#<' + obj.class.name, '>', &block)
+    end
+
+    # A convenience method, like object_group, but also reformats the Object's
+    # object_id.
+    def object_address_group(obj, &block)
+      str = Kernel.instance_method(:to_s).bind_call(obj)
+      str = str.chomp('>')
+      group(1, str, '>', &block)
+    end
+
+    # A convenience method which is same as follows:
+    #
+    #   text ','
+    #   breakable
+    def comma_breakable
+      text ','
+      breakable
+    end
+
+    # Adds a separated list.
+    # The list is separated by comma with breakable space, by default.
+    #
+    # #seplist iterates the +list+ using +iter_method+.
+    # It yields each object to the block given for #seplist.
+    # The procedure +separator_proc+ is called between each yields.
+    #
+    # If the iteration is zero times, +separator_proc+ is not called at all.
+    #
+    # If +separator_proc+ is nil or not given,
+    # +lambda { comma_breakable }+ is used.
+    # If +iter_method+ is not given, :each is used.
+    #
+    # For example, following 3 code fragments has similar effect.
+    #
+    #   q.seplist([1,2,3]) {|v| xxx v }
+    #
+    #   q.seplist([1,2,3], lambda { q.comma_breakable }, :each) {|v| xxx v }
+    #
+    #   xxx 1
+    #   q.comma_breakable
+    #   xxx 2
+    #   q.comma_breakable
+    #   xxx 3
+    def seplist(list, sep=nil, iter_method=:each) # :yield: element
+      sep ||= lambda { comma_breakable }
+      first = true
+      list.__send__(iter_method) {|*v|
+        if first
+          first = false
+        else
+          sep.call
+        end
+        yield(*v)
+      }
+    end
+
+    # A present standard failsafe for pretty printing any given Object
+    def pp_object(obj)
+      object_address_group(obj) {
+        seplist(obj.pretty_print_instance_variables, lambda { text ',' }) {|v|
+          breakable
+          v = v.to_s if Symbol === v
+          text v
+          text '='
+          group(1) {
+            breakable ''
+            pp(obj.instance_eval(v))
+          }
+        }
+      }
+    end
+
+    # A pretty print for a Hash
+    def pp_hash(obj)
+      group(1, '{', '}') {
+        seplist(obj, nil, :each_pair) {|k, v|
+          group {
+            pp k
+            text '=>'
+            group(1) {
+              breakable ''
+              pp v
+            }
+          }
+        }
+      }
+    end
+  end
+
+  include PPMethods
+
+  class SingleLine < PrettyPrint::SingleLine # :nodoc:
+    include PPMethods
+  end
+
+  module ObjectMixin # :nodoc:
+    # 1. specific pretty_print
+    # 2. specific inspect
+    # 3. generic pretty_print
+
+    # A default pretty printing method for general objects.
+    # It calls #pretty_print_instance_variables to list instance variables.
+    #
+    # If +self+ has a customized (redefined) #inspect method,
+    # the result of self.inspect is used but it obviously has no
+    # line break hints.
+    #
+    # This module provides predefined #pretty_print methods for some of
+    # the most commonly used built-in classes for convenience.
+    def pretty_print(q)
+      umethod_method = Object.instance_method(:method)
+      begin
+        inspect_method = umethod_method.bind_call(self, :inspect)
+      rescue NameError
+      end
+      if inspect_method && inspect_method.owner != Kernel
+        q.text self.inspect
+      elsif !inspect_method && self.respond_to?(:inspect)
+        q.text self.inspect
+      else
+        q.pp_object(self)
+      end
+    end
+
+    # A default pretty printing method for general objects that are
+    # detected as part of a cycle.
+    def pretty_print_cycle(q)
+      q.object_address_group(self) {
+        q.breakable
+        q.text '...'
+      }
+    end
+
+    # Returns a sorted array of instance variable names.
+    #
+    # This method should return an array of names of instance variables as symbols or strings as:
+    # +[:@a, :@b]+.
+    def pretty_print_instance_variables
+      instance_variables.sort
+    end
+
+    # Is #inspect implementation using #pretty_print.
+    # If you implement #pretty_print, it can be used as follows.
+    #
+    #   alias inspect pretty_print_inspect
+    #
+    # However, doing this requires that every class that #inspect is called on
+    # implement #pretty_print, or a RuntimeError will be raised.
+    def pretty_print_inspect
+      if Object.instance_method(:method).bind_call(self, :pretty_print).owner == PP::ObjectMixin
+        raise "pretty_print is not overridden for #{self.class}"
+      end
+      PP.singleline_pp(self, ''.dup)
+    end
+  end
+end
+
+class Array # :nodoc:
+  def pretty_print(q) # :nodoc:
+    q.group(1, '[', ']') {
+      q.seplist(self) {|v|
+        q.pp v
+      }
+    }
+  end
+
+  def pretty_print_cycle(q) # :nodoc:
+    q.text(empty? ? '[]' : '[...]')
+  end
+end
+
+class Hash # :nodoc:
+  def pretty_print(q) # :nodoc:
+    q.pp_hash self
+  end
+
+  def pretty_print_cycle(q) # :nodoc:
+    q.text(empty? ? '{}' : '{...}')
+  end
+end
+
+class << ENV # :nodoc:
+  def pretty_print(q) # :nodoc:
+    h = {}
+    ENV.keys.sort.each {|k|
+      h[k] = ENV[k]
+    }
+    q.pp_hash h
+  end
+end
+
+class Struct # :nodoc:
+  def pretty_print(q) # :nodoc:
+    q.group(1, sprintf("#<struct %s", PP.mcall(self, Kernel, :class).name), '>') {
+      q.seplist(PP.mcall(self, Struct, :members), lambda { q.text "," }) {|member|
+        q.breakable
+        q.text member.to_s
+        q.text '='
+        q.group(1) {
+          q.breakable ''
+          q.pp self[member]
+        }
+      }
+    }
+  end
+
+  def pretty_print_cycle(q) # :nodoc:
+    q.text sprintf("#<struct %s:...>", PP.mcall(self, Kernel, :class).name)
+  end
+end
+
+class Range # :nodoc:
+  def pretty_print(q) # :nodoc:
+    q.pp self.begin
+    q.breakable ''
+    q.text(self.exclude_end? ? '...' : '..')
+    q.breakable ''
+    q.pp self.end if self.end
+  end
+end
+
+class String # :nodoc:
+  def pretty_print(q) # :nodoc:
+    lines = self.lines
+    if lines.size > 1
+      q.group(0, '', '') do
+        q.seplist(lines, lambda { q.text ' +'; q.breakable }) do |v|
+          q.pp v
+        end
+      end
+    else
+      q.text inspect
+    end
+  end
+end
+
+# Opal: does not have File::Stat
+#class File < IO # :nodoc:
+#  class Stat # :nodoc:
+#    def pretty_print(q) # :nodoc:
+#      require 'etc.so'
+#      q.object_group(self) {
+#        q.breakable
+#        q.text sprintf("dev=0x%x", self.dev); q.comma_breakable
+#        q.text "ino="; q.pp self.ino; q.comma_breakable
+#        q.group {
+#          m = self.mode
+#          q.text sprintf("mode=0%o", m)
+#          q.breakable
+#          q.text sprintf("(%s %c%c%c%c%c%c%c%c%c)",
+#            self.ftype,
+#            (m & 0400 == 0 ? ?- : ?r),
+#            (m & 0200 == 0 ? ?- : ?w),
+#            (m & 0100 == 0 ? (m & 04000 == 0 ? ?- : ?S) :
+#                             (m & 04000 == 0 ? ?x : ?s)),
+#            (m & 0040 == 0 ? ?- : ?r),
+#            (m & 0020 == 0 ? ?- : ?w),
+#            (m & 0010 == 0 ? (m & 02000 == 0 ? ?- : ?S) :
+#                             (m & 02000 == 0 ? ?x : ?s)),
+#            (m & 0004 == 0 ? ?- : ?r),
+#            (m & 0002 == 0 ? ?- : ?w),
+#            (m & 0001 == 0 ? (m & 01000 == 0 ? ?- : ?T) :
+#                             (m & 01000 == 0 ? ?x : ?t)))
+#        }
+#        q.comma_breakable
+#        q.text "nlink="; q.pp self.nlink; q.comma_breakable
+#        q.group {
+#          q.text "uid="; q.pp self.uid
+#          begin
+#            pw = Etc.getpwuid(self.uid)
+#          rescue ArgumentError
+#          end
+#          if pw
+#            q.breakable; q.text "(#{pw.name})"
+#          end
+#        }
+#        q.comma_breakable
+#        q.group {
+#          q.text "gid="; q.pp self.gid
+#          begin
+#            gr = Etc.getgrgid(self.gid)
+#          rescue ArgumentError
+#          end
+#          if gr
+#            q.breakable; q.text "(#{gr.name})"
+#          end
+#        }
+#        q.comma_breakable
+#        q.group {
+#          q.text sprintf("rdev=0x%x", self.rdev)
+#          if self.rdev_major && self.rdev_minor
+#            q.breakable
+#            q.text sprintf('(%d, %d)', self.rdev_major, self.rdev_minor)
+#          end
+#        }
+#        q.comma_breakable
+#        q.text "size="; q.pp self.size; q.comma_breakable
+#        q.text "blksize="; q.pp self.blksize; q.comma_breakable
+#        q.text "blocks="; q.pp self.blocks; q.comma_breakable
+#        q.group {
+#          t = self.atime
+#          q.text "atime="; q.pp t
+#          q.breakable; q.text "(#{t.tv_sec})"
+#        }
+#        q.comma_breakable
+#        q.group {
+#          t = self.mtime
+#          q.text "mtime="; q.pp t
+#          q.breakable; q.text "(#{t.tv_sec})"
+#        }
+#        q.comma_breakable
+#        q.group {
+#          t = self.ctime
+#          q.text "ctime="; q.pp t
+#          q.breakable; q.text "(#{t.tv_sec})"
+#        }
+#      }
+#    end
+#  end
+#end
+
+class MatchData # :nodoc:
+  def pretty_print(q) # :nodoc:
+    nc = []
+    self.regexp.named_captures.each {|name, indexes|
+      indexes.each {|i| nc[i] = name }
+    }
+    q.object_group(self) {
+      q.breakable
+      q.seplist(0...self.size, lambda { q.breakable }) {|i|
+        if i == 0
+          q.pp self[i]
+        else
+          if nc[i]
+            q.text nc[i]
+          else
+            q.pp i
+          end
+          q.text ':'
+          q.pp self[i]
+        end
+      }
+    }
+  end
+end
+
+# Opal: does not have RubyVM
+#class RubyVM::AbstractSyntaxTree::Node
+#  def pretty_print_children(q, names = [])
+#    children.zip(names) do |c, n|
+#      if n
+#        q.breakable
+#        q.text "#{n}:"
+#      end
+#      q.group(2) do
+#        q.breakable
+#        q.pp c
+#      end
+#    end
+#  end
+#
+#  def pretty_print(q)
+#    q.group(1, "(#{type}@#{first_lineno}:#{first_column}-#{last_lineno}:#{last_column}", ")") {
+#      case type
+#      when :SCOPE
+#        pretty_print_children(q, %w"tbl args body")
+#      when :ARGS
+#        pretty_print_children(q, %w[pre_num pre_init opt first_post post_num post_init rest kw kwrest block])
+#      when :DEFN
+#        pretty_print_children(q, %w[mid body])
+#      when :ARYPTN
+#        pretty_print_children(q, %w[const pre rest post])
+#      when :HSHPTN
+#        pretty_print_children(q, %w[const kw kwrest])
+#      else
+#        pretty_print_children(q)
+#      end
+#    }
+#  end
+#end
+
+class Object < BasicObject # :nodoc:
+  include PP::ObjectMixin
+end
+
+[Numeric, Symbol, FalseClass, TrueClass, NilClass, Module].each {|c|
+  c.class_eval {
+    def pretty_print_cycle(q)
+      q.text inspect
+    end
+  }
+}
+
+[Numeric, FalseClass, TrueClass, Module].each {|c|
+  c.class_eval {
+    def pretty_print(q)
+      q.text inspect
+    end
+  }
+}
+
+module Kernel
+  # Returns a pretty printed object as a string.
+  #
+  # In order to use this method you must first require the PP module:
+  #
+  #   require 'pp'
+  #
+  # See the PP module for more information.
+  def pretty_inspect
+    PP.pp(self, StringIO.new).string
+  end
+
+  # prints arguments in pretty form.
+  #
+  # pp returns argument(s).
+  def pp(*objs)
+    objs.each {|obj|
+      PP.pp(obj)
+    }
+    objs.size <= 1 ? objs.first : objs
+  end
+  module_function :pp
+end
diff --git a/stdlib/prettyprint.rb b/stdlib/prettyprint.rb
new file mode 100644
index 00000000..2a3ca90d
--- /dev/null
+++ b/stdlib/prettyprint.rb
@@ -0,0 +1,556 @@
+# frozen_string_literal: true
+#
+# This class implements a pretty printing algorithm. It finds line breaks and
+# nice indentations for grouped structure.
+#
+# By default, the class assumes that primitive elements are strings and each
+# byte in the strings have single column in width. But it can be used for
+# other situations by giving suitable arguments for some methods:
+# * newline object and space generation block for PrettyPrint.new
+# * optional width argument for PrettyPrint#text
+# * PrettyPrint#breakable
+#
+# There are several candidate uses:
+# * text formatting using proportional fonts
+# * multibyte characters which has columns different to number of bytes
+# * non-string formatting
+#
+# == Bugs
+# * Box based formatting?
+# * Other (better) model/algorithm?
+#
+# Report any bugs at http://bugs.ruby-lang.org
+#
+# == References
+# Christian Lindig, Strictly Pretty, March 2000,
+# http://www.st.cs.uni-sb.de/~lindig/papers/#pretty
+#
+# Philip Wadler, A prettier printer, March 1998,
+# http://homepages.inf.ed.ac.uk/wadler/topics/language-design.html#prettier
+#
+# == Author
+# Tanaka Akira <akr@fsij.org>
+#
+class PrettyPrint
+
+  # This is a convenience method which is same as follows:
+  #
+  #   begin
+  #     q = PrettyPrint.new(output, maxwidth, newline, &genspace)
+  #     ...
+  #     q.flush
+  #     output
+  #   end
+  #
+  def PrettyPrint.format(output=''.dup, maxwidth=79, newline="\n", genspace=lambda {|n| ' ' * n})
+    q = PrettyPrint.new(output, maxwidth, newline, &genspace)
+    yield q
+    q.flush
+    output
+  end
+
+  # This is similar to PrettyPrint::format but the result has no breaks.
+  #
+  # +maxwidth+, +newline+ and +genspace+ are ignored.
+  #
+  # The invocation of +breakable+ in the block doesn't break a line and is
+  # treated as just an invocation of +text+.
+  #
+  def PrettyPrint.singleline_format(output=''.dup, maxwidth=nil, newline=nil, genspace=nil)
+    q = SingleLine.new(output)
+    yield q
+    output
+  end
+
+  # Creates a buffer for pretty printing.
+  #
+  # +output+ is an output target. If it is not specified, '' is assumed. It
+  # should have a << method which accepts the first argument +obj+ of
+  # PrettyPrint#text, the first argument +sep+ of PrettyPrint#breakable, the
+  # first argument +newline+ of PrettyPrint.new, and the result of a given
+  # block for PrettyPrint.new.
+  #
+  # +maxwidth+ specifies maximum line length. If it is not specified, 79 is
+  # assumed. However actual outputs may overflow +maxwidth+ if long
+  # non-breakable texts are provided.
+  #
+  # +newline+ is used for line breaks. "\n" is used if it is not specified.
+  #
+  # The block is used to generate spaces. {|width| ' ' * width} is used if it
+  # is not given.
+  #
+  def initialize(output=''.dup, maxwidth=79, newline="\n", &genspace)
+    @output = output
+    @maxwidth = maxwidth
+    @newline = newline
+    @genspace = genspace || lambda {|n| ' ' * n}
+
+    @output_width = 0
+    @buffer_width = 0
+    @buffer = []
+
+    root_group = Group.new(0)
+    @group_stack = [root_group]
+    @group_queue = GroupQueue.new(root_group)
+    @indent = 0
+  end
+
+  # The output object.
+  #
+  # This defaults to '', and should accept the << method
+  attr_reader :output
+
+  # The maximum width of a line, before it is separated in to a newline
+  #
+  # This defaults to 79, and should be a Fixnum
+  attr_reader :maxwidth
+
+  # The value that is appended to +output+ to add a new line.
+  #
+  # This defaults to "\n", and should be String
+  attr_reader :newline
+
+  # A lambda or Proc, that takes one argument, of a Fixnum, and returns
+  # the corresponding number of spaces.
+  #
+  # By default this is:
+  #   lambda {|n| ' ' * n}
+  attr_reader :genspace
+
+  # The number of spaces to be indented
+  attr_reader :indent
+
+  # The PrettyPrint::GroupQueue of groups in stack to be pretty printed
+  attr_reader :group_queue
+
+  # Returns the group most recently added to the stack.
+  #
+  # Contrived example:
+  #   out = ""
+  #   => ""
+  #   q = PrettyPrint.new(out)
+  #   => #<PrettyPrint:0x82f85c0 @output="", @maxwidth=79, @newline="\n", @genspace=#<Proc:0x82f8368@/home/vbatts/.rvm/rubies/ruby-head/lib/ruby/2.0.0/prettyprint.rb:82 (lambda)>, @output_width=0, @buffer_width=0, @buffer=[], @group_stack=[#<PrettyPrint::Group:0x82f8138 @depth=0, @breakables=[], @break=false>], @group_queue=#<PrettyPrint::GroupQueue:0x82fb7c0 @queue=[[#<PrettyPrint::Group:0x82f8138 @depth=0, @breakables=[], @break=false>]]>, @indent=0>
+  #   q.group {
+  #     q.text q.current_group.inspect
+  #     q.text q.newline
+  #     q.group(q.current_group.depth + 1) {
+  #       q.text q.current_group.inspect
+  #       q.text q.newline
+  #       q.group(q.current_group.depth + 1) {
+  #         q.text q.current_group.inspect
+  #         q.text q.newline
+  #         q.group(q.current_group.depth + 1) {
+  #           q.text q.current_group.inspect
+  #           q.text q.newline
+  #         }
+  #       }
+  #     }
+  #   }
+  #   => 284
+  #    puts out
+  #   #<PrettyPrint::Group:0x8354758 @depth=1, @breakables=[], @break=false>
+  #   #<PrettyPrint::Group:0x8354550 @depth=2, @breakables=[], @break=false>
+  #   #<PrettyPrint::Group:0x83541cc @depth=3, @breakables=[], @break=false>
+  #   #<PrettyPrint::Group:0x8347e54 @depth=4, @breakables=[], @break=false>
+  def current_group
+    @group_stack.last
+  end
+
+  # Breaks the buffer into lines that are shorter than #maxwidth
+  def break_outmost_groups
+    while @maxwidth < @output_width + @buffer_width
+      return unless group = @group_queue.deq
+      until group.breakables.empty?
+        data = @buffer.shift
+        @output_width = data.output(@output, @output_width)
+        @buffer_width -= data.width
+      end
+      while !@buffer.empty? && Text === @buffer.first
+        text = @buffer.shift
+        @output_width = text.output(@output, @output_width)
+        @buffer_width -= text.width
+      end
+    end
+  end
+
+  # This adds +obj+ as a text of +width+ columns in width.
+  #
+  # If +width+ is not specified, obj.length is used.
+  #
+  def text(obj, width=obj.length)
+    if @buffer.empty?
+      @output << obj
+      @output_width += width
+    else
+      text = @buffer.last
+      unless Text === text
+        text = Text.new
+        @buffer << text
+      end
+      text.add(obj, width)
+      @buffer_width += width
+      break_outmost_groups
+    end
+  end
+
+  # This is similar to #breakable except
+  # the decision to break or not is determined individually.
+  #
+  # Two #fill_breakable under a group may cause 4 results:
+  # (break,break), (break,non-break), (non-break,break), (non-break,non-break).
+  # This is different to #breakable because two #breakable under a group
+  # may cause 2 results:
+  # (break,break), (non-break,non-break).
+  #
+  # The text +sep+ is inserted if a line is not broken at this point.
+  #
+  # If +sep+ is not specified, " " is used.
+  #
+  # If +width+ is not specified, +sep.length+ is used. You will have to
+  # specify this when +sep+ is a multibyte character, for example.
+  #
+  def fill_breakable(sep=' ', width=sep.length)
+    group { breakable sep, width }
+  end
+
+  # This says "you can break a line here if necessary", and a +width+\-column
+  # text +sep+ is inserted if a line is not broken at the point.
+  #
+  # If +sep+ is not specified, " " is used.
+  #
+  # If +width+ is not specified, +sep.length+ is used. You will have to
+  # specify this when +sep+ is a multibyte character, for example.
+  #
+  def breakable(sep=' ', width=sep.length)
+    group = @group_stack.last
+    if group.break?
+      flush
+      @output << @newline
+      @output << @genspace.call(@indent)
+      @output_width = @indent
+      @buffer_width = 0
+    else
+      @buffer << Breakable.new(sep, width, self)
+      @buffer_width += width
+      break_outmost_groups
+    end
+  end
+
+  # Groups line break hints added in the block. The line break hints are all
+  # to be used or not.
+  #
+  # If +indent+ is specified, the method call is regarded as nested by
+  # nest(indent) { ... }.
+  #
+  # If +open_obj+ is specified, <tt>text open_obj, open_width</tt> is called
+  # before grouping. If +close_obj+ is specified, <tt>text close_obj,
+  # close_width</tt> is called after grouping.
+  #
+  def group(indent=0, open_obj='', close_obj='', open_width=open_obj.length, close_width=close_obj.length)
+    text open_obj, open_width
+    group_sub {
+      nest(indent) {
+        yield
+      }
+    }
+    text close_obj, close_width
+  end
+
+  # Takes a block and queues a new group that is indented 1 level further.
+  def group_sub
+    group = Group.new(@group_stack.last.depth + 1)
+    @group_stack.push group
+    @group_queue.enq group
+    begin
+      yield
+    ensure
+      @group_stack.pop
+      if group.breakables.empty?
+        @group_queue.delete group
+      end
+    end
+  end
+
+  # Increases left margin after newline with +indent+ for line breaks added in
+  # the block.
+  #
+  def nest(indent)
+    @indent += indent
+    begin
+      yield
+    ensure
+      @indent -= indent
+    end
+  end
+
+  # outputs buffered data.
+  #
+  def flush
+    @buffer.each {|data|
+      @output_width = data.output(@output, @output_width)
+    }
+    @buffer.clear
+    @buffer_width = 0
+  end
+
+  # The Text class is the means by which to collect strings from objects.
+  #
+  # This class is intended for internal use of the PrettyPrint buffers.
+  class Text # :nodoc:
+
+    # Creates a new text object.
+    #
+    # This constructor takes no arguments.
+    #
+    # The workflow is to append a PrettyPrint::Text object to the buffer, and
+    # being able to call the buffer.last() to reference it.
+    #
+    # As there are objects, use PrettyPrint::Text#add to include the objects
+    # and the width to utilized by the String version of this object.
+    def initialize
+      @objs = []
+      @width = 0
+    end
+
+    # The total width of the objects included in this Text object.
+    attr_reader :width
+
+    # Render the String text of the objects that have been added to this Text object.
+    #
+    # Output the text to +out+, and increment the width to +output_width+
+    def output(out, output_width)
+      @objs.each {|obj| out << obj}
+      output_width + @width
+    end
+
+    # Include +obj+ in the objects to be pretty printed, and increment
+    # this Text object's total width by +width+
+    def add(obj, width)
+      @objs << obj
+      @width += width
+    end
+  end
+
+  # The Breakable class is used for breaking up object information
+  #
+  # This class is intended for internal use of the PrettyPrint buffers.
+  class Breakable # :nodoc:
+
+    # Create a new Breakable object.
+    #
+    # Arguments:
+    # * +sep+ String of the separator
+    # * +width+ Fixnum width of the +sep+
+    # * +q+ parent PrettyPrint object, to base from
+    def initialize(sep, width, q)
+      @obj = sep
+      @width = width
+      @pp = q
+      @indent = q.indent
+      @group = q.current_group
+      @group.breakables.push self
+    end
+
+    # Holds the separator String
+    #
+    # The +sep+ argument from ::new
+    attr_reader :obj
+
+    # The width of +obj+ / +sep+
+    attr_reader :width
+
+    # The number of spaces to indent.
+    #
+    # This is inferred from +q+ within PrettyPrint, passed in ::new
+    attr_reader :indent
+
+    # Render the String text of the objects that have been added to this
+    # Breakable object.
+    #
+    # Output the text to +out+, and increment the width to +output_width+
+    def output(out, output_width)
+      @group.breakables.shift
+      if @group.break?
+        out << @pp.newline
+        out << @pp.genspace.call(@indent)
+        @indent
+      else
+        @pp.group_queue.delete @group if @group.breakables.empty?
+        out << @obj
+        output_width + @width
+      end
+    end
+  end
+
+  # The Group class is used for making indentation easier.
+  #
+  # While this class does neither the breaking into newlines nor indentation,
+  # it is used in a stack (as well as a queue) within PrettyPrint, to group
+  # objects.
+  #
+  # For information on using groups, see PrettyPrint#group
+  #
+  # This class is intended for internal use of the PrettyPrint buffers.
+  class Group # :nodoc:
+    # Create a Group object
+    #
+    # Arguments:
+    # * +depth+ - this group's relation to previous groups
+    def initialize(depth)
+      @depth = depth
+      @breakables = []
+      @break = false
+    end
+
+    # This group's relation to previous groups
+    attr_reader :depth
+
+    # Array to hold the Breakable objects for this Group
+    attr_reader :breakables
+
+    # Makes a break for this Group, and returns true
+    def break
+      @break = true
+    end
+
+    # Boolean of whether this Group has made a break
+    def break?
+      @break
+    end
+
+    # Boolean of whether this Group has been queried for being first
+    #
+    # This is used as a predicate, and ought to be called first.
+    def first?
+      if defined? @first
+        false
+      else
+        @first = false
+        true
+      end
+    end
+  end
+
+  # The GroupQueue class is used for managing the queue of Group to be pretty
+  # printed.
+  #
+  # This queue groups the Group objects, based on their depth.
+  #
+  # This class is intended for internal use of the PrettyPrint buffers.
+  class GroupQueue # :nodoc:
+    # Create a GroupQueue object
+    #
+    # Arguments:
+    # * +groups+ - one or more PrettyPrint::Group objects
+    def initialize(*groups)
+      @queue = []
+      groups.each {|g| enq g}
+    end
+
+    # Enqueue +group+
+    #
+    # This does not strictly append the group to the end of the queue,
+    # but instead adds it in line, base on the +group.depth+
+    def enq(group)
+      depth = group.depth
+      @queue << [] until depth < @queue.length
+      @queue[depth] << group
+    end
+
+    # Returns the outer group of the queue
+    def deq
+      @queue.each {|gs|
+        (gs.length-1).downto(0) {|i|
+          unless gs[i].breakables.empty?
+            group = gs.slice!(i, 1).first
+            group.break
+            return group
+          end
+        }
+        gs.each {|group| group.break}
+        gs.clear
+      }
+      return nil
+    end
+
+    # Remote +group+ from this queue
+    def delete(group)
+      @queue[group.depth].delete(group)
+    end
+  end
+
+  # PrettyPrint::SingleLine is used by PrettyPrint.singleline_format
+  #
+  # It is passed to be similar to a PrettyPrint object itself, by responding to:
+  # * #text
+  # * #breakable
+  # * #nest
+  # * #group
+  # * #flush
+  # * #first?
+  #
+  # but instead, the output has no line breaks
+  #
+  class SingleLine
+    # Create a PrettyPrint::SingleLine object
+    #
+    # Arguments:
+    # * +output+ - String (or similar) to store rendered text. Needs to respond to '<<'
+    # * +maxwidth+ - Argument position expected to be here for compatibility.
+    #                This argument is a noop.
+    # * +newline+ - Argument position expected to be here for compatibility.
+    #               This argument is a noop.
+    def initialize(output, maxwidth=nil, newline=nil)
+      @output = output
+      @first = [true]
+    end
+
+    # Add +obj+ to the text to be output.
+    #
+    # +width+ argument is here for compatibility. It is a noop argument.
+    def text(obj, width=nil)
+      @output << obj
+    end
+
+    # Appends +sep+ to the text to be output. By default +sep+ is ' '
+    #
+    # +width+ argument is here for compatibility. It is a noop argument.
+    def breakable(sep=' ', width=nil)
+      @output << sep
+    end
+
+    # Takes +indent+ arg, but does nothing with it.
+    #
+    # Yields to a block.
+    def nest(indent) # :nodoc:
+      yield
+    end
+
+    # Opens a block for grouping objects to be pretty printed.
+    #
+    # Arguments:
+    # * +indent+ - noop argument. Present for compatibility.
+    # * +open_obj+ - text appended before the &blok. Default is ''
+    # * +close_obj+ - text appended after the &blok. Default is ''
+    # * +open_width+ - noop argument. Present for compatibility.
+    # * +close_width+ - noop argument. Present for compatibility.
+    def group(indent=nil, open_obj='', close_obj='', open_width=nil, close_width=nil)
+      @first.push true
+      @output << open_obj
+      yield
+      @output << close_obj
+      @first.pop
+    end
+
+    # Method present for compatibility, but is a noop
+    def flush # :nodoc:
+    end
+
+    # This is used as a predicate, and ought to be called first.
+    def first?
+      result = @first[-1]
+      @first[-1] = false
+      result
+    end
+  end
+end
diff --git a/stdlib/promise.rb b/stdlib/promise.rb
new file mode 100644
index 00000000..73f1b418
--- /dev/null
+++ b/stdlib/promise.rb
@@ -0,0 +1,454 @@
+# {Promise} is used to help structure asynchronous code.
+#
+# It is available in the Opal standard library, and can be required in any Opal
+# application:
+#
+#     require 'promise'
+#
+# ## Basic Usage
+#
+# Promises are created and returned as objects with the assumption that they
+# will eventually be resolved or rejected, but never both. A {Promise} has
+# a {#then} and {#fail} method (or one of their aliases) that can be used to
+# register a block that gets called once resolved or rejected.
+#
+#     promise = Promise.new
+#
+#     promise.then {
+#       puts "resolved!"
+#     }.fail {
+#       puts "rejected!"
+#     }
+#
+#     # some time later
+#     promise.resolve
+#
+#     # => "resolved!"
+#
+# It is important to remember that a promise can only be resolved or rejected
+# once, so the block will only ever be called once (or not at all).
+#
+# ## Resolving Promises
+#
+# To resolve a promise, means to inform the {Promise} that it has succeeded
+# or evaluated to a useful value. {#resolve} can be passed a value which is
+# then passed into the block handler:
+#
+#     def get_json
+#       promise = Promise.new
+#
+#       HTTP.get("some_url") do |req|
+#         promise.resolve req.json
+#       end
+#
+#       promise
+#     end
+#
+#     get_json.then do |json|
+#       puts "got some JSON from server"
+#     end
+#
+# ## Rejecting Promises
+#
+# Promises are also designed to handle error cases, or situations where an
+# outcome is not as expected. Taking the previous example, we can also pass
+# a value to a {#reject} call, which passes that object to the registered
+# {#fail} handler:
+#
+#     def get_json
+#       promise = Promise.new
+#
+#       HTTP.get("some_url") do |req|
+#         if req.ok?
+#           promise.resolve req.json
+#         else
+#           promise.reject req
+#         end
+#
+#       promise
+#     end
+#
+#     get_json.then {
+#       # ...
+#     }.fail { |req|
+#       puts "it went wrong: #{req.message}"
+#     }
+#
+# ## Chaining Promises
+#
+# Promises become even more useful when chained together. Each {#then} or
+# {#fail} call returns a new {Promise} which can be used to chain more and more
+# handlers together.
+#
+#     promise.then { wait_for_something }.then { do_something_else }
+#
+# Rejections are propagated through the entire chain, so a "catch all" handler
+# can be attached at the end of the tail:
+#
+#     promise.then { ... }.then { ... }.fail { ... }
+#
+# ## Composing Promises
+#
+# {Promise.when} can be used to wait for more than one promise to resolve (or
+# reject). Using the previous example, we could request two different json
+# requests and wait for both to finish:
+#
+#     Promise.when(get_json, get_json2).then |first, second|
+#       puts "got two json payloads: #{first}, #{second}"
+#     end
+#
+class Promise
+  def self.value(value)
+    new.resolve(value)
+  end
+
+  def self.error(value)
+    new.reject(value)
+  end
+
+  def self.when(*promises)
+    When.new(promises)
+  end
+
+  attr_reader :error, :prev, :next
+
+  def initialize(action = {})
+    @action = action
+
+    @realized  = false
+    @exception = false
+    @value     = nil
+    @error     = nil
+    @delayed   = false
+
+    @prev = nil
+    @next = []
+  end
+
+  def value
+    if Promise === @value
+      @value.value
+    else
+      @value
+    end
+  end
+
+  def act?
+    @action.key?(:success) || @action.key?(:always)
+  end
+
+  def action
+    @action.keys
+  end
+
+  def exception?
+    @exception
+  end
+
+  def realized?
+    @realized != false
+  end
+
+  def resolved?
+    @realized == :resolve
+  end
+
+  def rejected?
+    @realized == :reject
+  end
+
+  def ^(promise)
+    promise << self
+    self >> promise
+
+    promise
+  end
+
+  def <<(promise)
+    @prev = promise
+
+    self
+  end
+
+  def >>(promise)
+    @next << promise
+
+    if exception?
+      promise.reject(@delayed[0])
+    elsif resolved?
+      promise.resolve(@delayed ? @delayed[0] : value)
+    elsif rejected?
+      if !@action.key?(:failure) || Promise === (@delayed ? @delayed[0] : @error)
+        promise.reject(@delayed ? @delayed[0] : error)
+      elsif promise.action.include?(:always)
+        promise.reject(@delayed ? @delayed[0] : error)
+      end
+    end
+
+    self
+  end
+
+  def resolve(value = nil)
+    if realized?
+      raise ArgumentError, 'the promise has already been realized'
+    end
+
+    if Promise === value
+      return (value << @prev) ^ self
+    end
+
+    begin
+      block = @action[:success] || @action[:always]
+      if block
+        value = block.call(value)
+      end
+
+      resolve!(value)
+    rescue Exception => e
+      exception!(e)
+    end
+
+    self
+  end
+
+  def resolve!(value)
+    @realized = :resolve
+    @value    = value
+
+    if @next.any?
+      @next.each { |p| p.resolve(value) }
+    else
+      @delayed = [value]
+    end
+  end
+
+  def reject(value = nil)
+    if realized?
+      raise ArgumentError, 'the promise has already been realized'
+    end
+
+    if Promise === value
+      return (value << @prev) ^ self
+    end
+
+    begin
+      block = @action[:failure] || @action[:always]
+      if block
+        value = block.call(value)
+      end
+
+      if @action.key?(:always)
+        resolve!(value)
+      else
+        reject!(value)
+      end
+    rescue Exception => e
+      exception!(e)
+    end
+
+    self
+  end
+
+  def reject!(value)
+    @realized = :reject
+    @error    = value
+
+    if @next.any?
+      @next.each { |p| p.reject(value) }
+    else
+      @delayed = [value]
+    end
+  end
+
+  def exception!(error)
+    @exception = true
+
+    reject!(error)
+  end
+
+  def then(&block)
+    self ^ Promise.new(success: block)
+  end
+
+  def then!(&block)
+    there_can_be_only_one!
+    self.then(&block)
+  end
+
+  def fail(&block)
+    self ^ Promise.new(failure: block)
+  end
+
+  def fail!(&block)
+    there_can_be_only_one!
+    fail(&block)
+  end
+
+  def always(&block)
+    self ^ Promise.new(always: block)
+  end
+
+  def always!(&block)
+    there_can_be_only_one!
+    always(&block)
+  end
+
+  def trace(depth = nil, &block)
+    self ^ Trace.new(depth, block)
+  end
+
+  def trace!(*args, &block)
+    there_can_be_only_one!
+    trace(*args, &block)
+  end
+
+  def there_can_be_only_one!
+    if @next.any?
+      raise ArgumentError, 'a promise has already been chained'
+    end
+  end
+
+  def inspect
+    result = "#<#{self.class}(#{object_id})"
+
+    if @next.any?
+      result += " >> #{@next.inspect}"
+    end
+
+    result += if realized?
+                ": #{(@value || @error).inspect}>"
+              else
+                '>'
+              end
+
+    result
+  end
+
+  def to_v2
+    v2 = PromiseV2.new
+
+    self.then { |i| v2.resolve(i) }.rescue { |i| v2.reject(i) }
+
+    v2
+  end
+
+  alias catch fail
+  alias catch! fail!
+  alias do then
+  alias do! then!
+  alias ensure always
+  alias ensure! always!
+  alias finally always
+  alias finally! always!
+  alias rescue fail
+  alias rescue! fail!
+  alias to_n to_v2
+  alias to_v1 itself
+
+  class Trace < self
+    def self.it(promise)
+      current = []
+
+      if promise.act? || promise.prev.nil?
+        current.push(promise.value)
+      end
+
+      prev = promise.prev
+      if prev
+        current.concat(it(prev))
+      else
+        current
+      end
+    end
+
+    def initialize(depth, block)
+      @depth = depth
+
+      super success: proc {
+        trace = Trace.it(self).reverse
+        trace.pop
+
+        if depth && depth <= trace.length
+          trace.shift(trace.length - depth)
+        end
+
+        block.call(*trace)
+      }
+    end
+  end
+
+  class When < self
+    def initialize(promises = [])
+      super()
+
+      @wait = []
+
+      promises.each do |promise|
+        wait promise
+      end
+    end
+
+    def each(&block)
+      raise ArgumentError, 'no block given' unless block
+
+      self.then do |values|
+        values.each(&block)
+      end
+    end
+
+    def collect(&block)
+      raise ArgumentError, 'no block given' unless block
+
+      self.then do |values|
+        When.new(values.map(&block))
+      end
+    end
+
+    def inject(*args, &block)
+      self.then do |values|
+        values.reduce(*args, &block)
+      end
+    end
+
+    def wait(promise)
+      unless Promise === promise
+        promise = Promise.value(promise)
+      end
+
+      if promise.act?
+        promise = promise.then
+      end
+
+      @wait << promise
+
+      promise.always do
+        try if @next.any?
+      end
+
+      self
+    end
+
+    def >>(*)
+      super.tap do
+        try
+      end
+    end
+
+    def try
+      if @wait.all?(&:realized?)
+        promise = @wait.find(&:rejected?)
+        if promise
+          reject(promise.error)
+        else
+          resolve(@wait.map(&:value))
+        end
+      end
+    end
+
+    alias map collect
+    alias reduce inject
+    alias and wait
+  end
+end
+
+PromiseV1 = Promise
diff --git a/stdlib/promise/v1.rb b/stdlib/promise/v1.rb
new file mode 100644
index 00000000..4501d533
--- /dev/null
+++ b/stdlib/promise/v1.rb
@@ -0,0 +1 @@
+require 'promise'
diff --git a/stdlib/promise/v2.rb b/stdlib/promise/v2.rb
new file mode 100644
index 00000000..6fc827c9
--- /dev/null
+++ b/stdlib/promise/v2.rb
@@ -0,0 +1,387 @@
+# {Promise} is used to help structure asynchronous code.
+#
+# It is available in the Opal standard library, and can be required in any Opal
+# application:
+#
+#     require 'promise/v2'
+#
+# ## Basic Usage
+#
+# Promises are created and returned as objects with the assumption that they
+# will eventually be resolved or rejected, but never both. A {Promise} has
+# a {#then} and {#fail} method (or one of their aliases) that can be used to
+# register a block that gets called once resolved or rejected.
+#
+#     promise = PromiseV2.new
+#
+#     promise.then {
+#       puts "resolved!"
+#     }.fail {
+#       puts "rejected!"
+#     }
+#
+#     # some time later
+#     promise.resolve
+#
+#     # => "resolved!"
+#
+# It is important to remember that a promise can only be resolved or rejected
+# once, so the block will only ever be called once (or not at all).
+#
+# ## Resolving Promises
+#
+# To resolve a promise, means to inform the {Promise} that it has succeeded
+# or evaluated to a useful value. {#resolve} can be passed a value which is
+# then passed into the block handler:
+#
+#     def get_json
+#       promise = PromiseV2.new
+#
+#       HTTP.get("some_url") do |req|
+#         promise.resolve req.json
+#       end
+#
+#       promise
+#     end
+#
+#     get_json.then do |json|
+#       puts "got some JSON from server"
+#     end
+#
+# ## Rejecting Promises
+#
+# Promises are also designed to handle error cases, or situations where an
+# outcome is not as expected. Taking the previous example, we can also pass
+# a value to a {#reject} call, which passes that object to the registered
+# {#fail} handler:
+#
+#     def get_json
+#       promise = PromiseV2.new
+#
+#       HTTP.get("some_url") do |req|
+#         if req.ok?
+#           promise.resolve req.json
+#         else
+#           promise.reject req
+#         end
+#
+#       promise
+#     end
+#
+#     get_json.then {
+#       # ...
+#     }.fail { |req|
+#       puts "it went wrong: #{req.message}"
+#     }
+#
+# ## Chaining Promises
+#
+# Promises become even more useful when chained together. Each {#then} or
+# {#fail} call returns a new {PromiseV2} which can be used to chain more and more
+# handlers together.
+#
+#     promise.then { wait_for_something }.then { do_something_else }
+#
+# Rejections are propagated through the entire chain, so a "catch all" handler
+# can be attached at the end of the tail:
+#
+#     promise.then { ... }.then { ... }.fail { ... }
+#
+# ## Composing Promises
+#
+# {PromiseV2.when} can be used to wait for more than one promise to resolve (or
+# reject). Using the previous example, we could request two different json
+# requests and wait for both to finish:
+#
+#     PromiseV2.when(get_json, get_json2).then |first, second|
+#       puts "got two json payloads: #{first}, #{second}"
+#     end
+#
+
+class PromiseV2 < `Promise`
+  class << self
+    def allocate
+      ok, fail = nil, nil
+
+      prom = `new self.$$constructor(function(_ok, _fail) { #{ok} = _ok; #{fail} = _fail; })`
+      prom.instance_variable_set(:@type, :opal)
+      prom.instance_variable_set(:@resolve_proc, ok)
+      prom.instance_variable_set(:@reject_proc, fail)
+      prom
+    end
+
+    def when(*promises)
+      promises = Array(promises.length == 1 ? promises.first : promises)
+      `Promise.all(#{promises})`.tap do |prom|
+        prom.instance_variable_set(:@type, :when)
+      end
+    end
+
+    def all_resolved(*promises)
+      promises = Array(promises.length == 1 ? promises.first : promises)
+      `Promise.allResolved(#{promises})`.tap do |prom|
+        prom.instance_variable_set(:@type, :all_resolved)
+      end
+    end
+
+    def any(*promises)
+      promises = Array(promises.length == 1 ? promises.first : promises)
+      `Promise.any(#{promises})`.tap do |prom|
+        prom.instance_variable_set(:@type, :any)
+      end
+    end
+
+    def race(*promises)
+      promises = Array(promises.length == 1 ? promises.first : promises)
+      `Promise.race(#{promises})`.tap do |prom|
+        prom.instance_variable_set(:@type, :race)
+      end
+    end
+
+    def resolve(value = nil)
+      `Promise.resolve(#{value})`.tap do |prom|
+        prom.instance_variable_set(:@type, :resolve)
+        prom.instance_variable_set(:@realized, :resolve)
+        prom.instance_variable_set(:@value, value)
+      end
+    end
+
+    def reject(value = nil)
+      `Promise.reject(#{value})`.tap do |prom|
+        prom.instance_variable_set(:@type, :reject)
+        prom.instance_variable_set(:@realized, :reject)
+        prom.instance_variable_set(:@value, value)
+      end
+    end
+
+    alias all when
+    alias error reject
+    alias value resolve
+  end
+
+  attr_reader :prev, :next
+
+  # Is this promise native to JavaScript? This means, that methods like resolve
+  # or reject won't be available.
+  def native?
+    @type != :opal
+  end
+
+  # Raise an exception when a non-JS-native method is called on a JS-native promise
+  def nativity_check!
+    raise ArgumentError, 'this promise is native to JavaScript' if native?
+  end
+
+  # Raise an exception when a non-JS-native method is called on a JS-native promise
+  # but permits some typed promises
+  def light_nativity_check!
+    return if %i[reject resolve trace always fail then].include? @type
+    raise ArgumentError, 'this promise is native to JavaScript' if native?
+  end
+
+  # Allow only one chain to be present, as needed by the previous implementation.
+  # This isn't a strict check - it's always possible on the JS side to chain a
+  # given block.
+  def there_can_be_only_one!
+    raise ArgumentError, 'a promise has already been chained' if @next && @next.any?
+  end
+
+  def gen_tracing_proc(passing, &block)
+    proc do |i|
+      res = passing.call(i)
+      yield(res)
+      res
+    end
+  end
+
+  def resolve(value = nil)
+    nativity_check!
+    raise ArgumentError, 'this promise was already resolved' if @realized
+    @value = value
+    @realized = :resolve
+    @resolve_proc.call(value)
+    self
+  end
+
+  def reject(value = nil)
+    nativity_check!
+    raise ArgumentError, 'this promise was already resolved' if @realized
+    @value = value
+    @realized = :reject
+    @reject_proc.call(value)
+    self
+  end
+
+  def then(&block)
+    prom = nil
+    blk = gen_tracing_proc(block) do |val|
+      prom.instance_variable_set(:@realized, :resolve)
+      prom.instance_variable_set(:@value, val)
+    end
+    prom = `self.then(#{blk})`
+    prom.instance_variable_set(:@prev, self)
+    prom.instance_variable_set(:@type, :then)
+    (@next ||= []) << prom
+    prom
+  end
+
+  def then!(&block)
+    there_can_be_only_one!
+    self.then(&block)
+  end
+
+  def fail(&block)
+    prom = nil
+    blk = gen_tracing_proc(block) do |val|
+      prom.instance_variable_set(:@realized, :resolve)
+      prom.instance_variable_set(:@value, val)
+    end
+    prom = `self.catch(#{blk})`
+    prom.instance_variable_set(:@prev, self)
+    prom.instance_variable_set(:@type, :fail)
+    (@next ||= []) << prom
+    prom
+  end
+
+  def fail!(&block)
+    there_can_be_only_one!
+    fail(&block)
+  end
+
+  def always(&block)
+    prom = nil
+    blk = gen_tracing_proc(block) do |val|
+      prom.instance_variable_set(:@realized, :resolve)
+      prom.instance_variable_set(:@value, val)
+    end
+    prom = `self.finally(#{blk})`
+    prom.instance_variable_set(:@prev, self)
+    prom.instance_variable_set(:@type, :always)
+    (@next ||= []) << prom
+    prom
+  end
+
+  def always!(&block)
+    there_can_be_only_one!
+    always(&block)
+  end
+
+  def trace(depth = nil, &block)
+    prom = self.then do
+      values = []
+      prom = self
+      while prom && (!depth || depth > 0)
+        val = nil
+        begin
+          val = prom.value
+        rescue ArgumentError
+          val = :native
+        end
+        values.unshift(val)
+        depth -= 1 if depth
+        prom = prom.prev
+      end
+      yield(*values)
+    end
+
+    prom.instance_variable_set(:@type, :trace)
+    prom
+  end
+
+  def trace!(*args, &block)
+    there_can_be_only_one!
+    trace(*args, &block)
+  end
+
+  def resolved?
+    light_nativity_check!
+    @realized == :resolve
+  end
+
+  def rejected?
+    light_nativity_check!
+    @realized == :reject
+  end
+
+  def realized?
+    light_nativity_check!
+    !@realized.nil?
+  end
+
+  def value
+    if resolved?
+      if PromiseV2 === @value
+        @value.value
+      else
+        @value
+      end
+    end
+  end
+
+  def error
+    light_nativity_check!
+    @value if rejected?
+  end
+
+  def and(*promises)
+    promises = promises.map do |i|
+      if PromiseV2 === i
+        i
+      else
+        PromiseV2.value(i)
+      end
+    end
+    PromiseV2.when(self, *promises).then do |a, *b|
+      [*a, *b]
+    end
+  end
+
+  def initialize(&block)
+    yield self if block_given?
+  end
+
+  def to_v1
+    v1 = PromiseV1.new
+
+    self.then { |i| v1.resolve(i) }.rescue { |i| v1.reject(i) }
+
+    v1
+  end
+
+  def inspect
+    result = "#<#{self.class}"
+
+    if @type
+      result += ":#{@type}" unless %i[opal resolve reject].include? @type
+    else
+      result += ':native'
+    end
+
+    result += ":#{@realized}" if @realized
+    result += "(#{object_id})"
+
+    if @next && @next.any?
+      result += " >> #{@next.inspect}"
+    end
+
+    result += ": #{@value.inspect}" if @value
+    result += '>'
+
+    result
+  end
+
+  alias catch fail
+  alias catch! fail!
+  alias do then
+  alias do! then!
+  alias ensure always
+  alias ensure! always!
+  alias finally always
+  alias finally! always!
+  alias reject! reject
+  alias rescue fail
+  alias rescue! fail!
+  alias resolve! resolve
+  alias to_n itself
+  alias to_v2 itself
+end
diff --git a/stdlib/quickjs.rb b/stdlib/quickjs.rb
new file mode 100644
index 00000000..a69cecc1
--- /dev/null
+++ b/stdlib/quickjs.rb
@@ -0,0 +1,4 @@
+`/* global std, scriptArgs */`
+
+require 'quickjs/io'
+require 'quickjs/kernel'
diff --git a/stdlib/quickjs/io.rb b/stdlib/quickjs/io.rb
new file mode 100644
index 00000000..6e7fb1a0
--- /dev/null
+++ b/stdlib/quickjs/io.rb
@@ -0,0 +1,20 @@
+%x{
+  Opal.gvars.stdout.write_proc = function(s) {
+    std.out.printf("%s", s);
+    std.out.flush();
+  }
+
+  Opal.gvars.stderr.write_proc = function(s) {
+    std.err.printf("%s", s);
+    std.err.flush();
+  }
+
+  Opal.gvars.stdin.read_proc = function(s) {
+    if (std.in.eof()) {
+      return nil;
+    }
+    else {
+      return std.in.readAsString(s);
+    }
+  }
+}
diff --git a/stdlib/quickjs/kernel.rb b/stdlib/quickjs/kernel.rb
new file mode 100644
index 00000000..822f91f4
--- /dev/null
+++ b/stdlib/quickjs/kernel.rb
@@ -0,0 +1,3 @@
+ARGV = `scriptArgs`
+
+`Opal.exit = std.exit`
diff --git a/stdlib/racc/parser.rb b/stdlib/racc/parser.rb
new file mode 100644
index 00000000..8f6de7e8
--- /dev/null
+++ b/stdlib/racc/parser.rb
@@ -0,0 +1,628 @@
+# Opal port of racc/parser.rb.
+#
+# Original license:
+#
+# frozen_string_literal: false
+#--
+# $originalId: parser.rb,v 1.8 2006/07/06 11:42:07 aamine Exp $
+#
+# Copyright (c) 1999-2006 Minero Aoki
+#
+# This program is free software.
+# You can distribute/modify this program under the same terms of ruby.
+#
+# As a special exception, when this code is copied by Racc
+# into a Racc output file, you may use that output file
+# without restriction.
+#++
+
+module Racc
+  class ParseError < StandardError; end
+end
+unless defined?(::ParseError)
+  ParseError = Racc::ParseError
+end
+
+# Racc is a LALR(1) parser generator.
+# It is written in Ruby itself, and generates Ruby programs.
+#
+# == Command-line Reference
+#
+#     racc [-o<var>filename</var>] [--output-file=<var>filename</var>]
+#          [-e<var>rubypath</var>] [--embedded=<var>rubypath</var>]
+#          [-v] [--verbose]
+#          [-O<var>filename</var>] [--log-file=<var>filename</var>]
+#          [-g] [--debug]
+#          [-E] [--embedded]
+#          [-l] [--no-line-convert]
+#          [-c] [--line-convert-all]
+#          [-a] [--no-omit-actions]
+#          [-C] [--check-only]
+#          [-S] [--output-status]
+#          [--version] [--copyright] [--help] <var>grammarfile</var>
+#
+# [+filename+]
+#   Racc grammar file. Any extension is permitted.
+# [-o+outfile+, --output-file=+outfile+]
+#   A filename for output. default is <+filename+>.tab.rb
+# [-O+filename+, --log-file=+filename+]
+#   Place logging output in file +filename+.
+#   Default log file name is <+filename+>.output.
+# [-e+rubypath+, --executable=+rubypath+]
+#   output executable file(mode 755). where +path+ is the Ruby interpreter.
+# [-v, --verbose]
+#   verbose mode. create +filename+.output file, like yacc's y.output file.
+# [-g, --debug]
+#   add debug code to parser class. To display debugging information,
+#   use this '-g' option and set @yydebug true in parser class.
+# [-E, --embedded]
+#   Output parser which doesn't need runtime files (racc/parser.rb).
+# [-C, --check-only]
+#   Check syntax of racc grammar file and quit.
+# [-S, --output-status]
+#   Print messages time to time while compiling.
+# [-l, --no-line-convert]
+#   turns off line number converting.
+# [-c, --line-convert-all]
+#   Convert line number of actions, inner, header and footer.
+# [-a, --no-omit-actions]
+#   Call all actions, even if an action is empty.
+# [--version]
+#   print Racc version and quit.
+# [--copyright]
+#   Print copyright and quit.
+# [--help]
+#   Print usage and quit.
+#
+# == Generating Parser Using Racc
+#
+# To compile Racc grammar file, simply type:
+#
+#   $ racc parse.y
+#
+# This creates Ruby script file "parse.tab.y". The -o option can change the output filename.
+#
+# == Writing A Racc Grammar File
+#
+# If you want your own parser, you have to write a grammar file.
+# A grammar file contains the name of your parser class, grammar for the parser,
+# user code, and anything else.
+# When writing a grammar file, yacc's knowledge is helpful.
+# If you have not used yacc before, Racc is not too difficult.
+#
+# Here's an example Racc grammar file.
+#
+#   class Calcparser
+#   rule
+#     target: exp { print val[0] }
+#
+#     exp: exp '+' exp
+#        | exp '*' exp
+#        | '(' exp ')'
+#        | NUMBER
+#   end
+#
+# Racc grammar files resemble yacc files.
+# But (of course), this is Ruby code.
+# yacc's $$ is the 'result', $0, $1... is
+# an array called 'val', and $-1, $-2... is an array called '_values'.
+#
+# See the {Grammar File Reference}[rdoc-ref:lib/racc/rdoc/grammar.en.rdoc] for
+# more information on grammar files.
+#
+# == Parser
+#
+# Then you must prepare the parse entry method. There are two types of
+# parse methods in Racc, Racc::Parser#do_parse and Racc::Parser#yyparse
+#
+# Racc::Parser#do_parse is simple.
+#
+# It's yyparse() of yacc, and Racc::Parser#next_token is yylex().
+# This method must returns an array like [TOKENSYMBOL, ITS_VALUE].
+# EOF is [false, false].
+# (TOKENSYMBOL is a Ruby symbol (taken from String#intern) by default.
+# If you want to change this, see the grammar reference.
+#
+# Racc::Parser#yyparse is little complicated, but useful.
+# It does not use Racc::Parser#next_token, instead it gets tokens from any iterator.
+#
+# For example, <code>yyparse(obj, :scan)</code> causes
+# calling +obj#scan+, and you can return tokens by yielding them from +obj#scan+.
+#
+# == Debugging
+#
+# When debugging, "-v" or/and the "-g" option is helpful.
+#
+# "-v" creates verbose log file (.output).
+# "-g" creates a "Verbose Parser".
+# Verbose Parser prints the internal status when parsing.
+# But it's _not_ automatic.
+# You must use -g option and set +@yydebug+ to +true+ in order to get output.
+# -g option only creates the verbose parser.
+#
+# === Racc reported syntax error.
+#
+# Isn't there too many "end"?
+# grammar of racc file is changed in v0.10.
+#
+# Racc does not use '%' mark, while yacc uses huge number of '%' marks..
+#
+# === Racc reported "XXXX conflicts".
+#
+# Try "racc -v xxxx.y".
+# It causes producing racc's internal log file, xxxx.output.
+#
+# === Generated parsers does not work correctly
+#
+# Try "racc -g xxxx.y".
+# This command let racc generate "debugging parser".
+# Then set @yydebug=true in your parser.
+# It produces a working log of your parser.
+#
+# == Re-distributing Racc runtime
+#
+# A parser, which is created by Racc, requires the Racc runtime module;
+# racc/parser.rb.
+#
+# Ruby 1.8.x comes with Racc runtime module,
+# you need NOT distribute Racc runtime files.
+#
+# If you want to include the Racc runtime module with your parser.
+# This can be done by using '-E' option:
+#
+#   $ racc -E -omyparser.rb myparser.y
+#
+# This command creates myparser.rb which `includes' Racc runtime.
+# Only you must do is to distribute your parser file (myparser.rb).
+#
+# Note: parser.rb is LGPL, but your parser is not.
+# Your own parser is completely yours.
+module Racc
+
+  unless defined?(Racc_No_Extensions)
+    Racc_No_Extensions = false # :nodoc:
+  end
+
+  class Parser
+
+    Racc_Runtime_Version = '1.4.6'
+    Racc_Runtime_Revision = %w$originalRevision: 1.8 $[1]
+
+    Racc_Runtime_Core_Version_R = '1.4.6'
+    Racc_Runtime_Core_Revision_R = %w$originalRevision: 1.8 $[1]
+    # DISABLED: opal has no racc/cparse
+    # begin
+    #   require 'racc/cparse'
+    # # Racc_Runtime_Core_Version_C  = (defined in extension)
+    #   Racc_Runtime_Core_Revision_C = Racc_Runtime_Core_Id_C.split[2]
+    #   unless new.respond_to?(:_racc_do_parse_c, true)
+    #     raise LoadError, 'old cparse.so'
+    #   end
+    #   if Racc_No_Extensions
+    #     raise LoadError, 'selecting ruby version of racc runtime core'
+    #   end
+    #
+    #   Racc_Main_Parsing_Routine    = :_racc_do_parse_c # :nodoc:
+    #   Racc_YY_Parse_Method         = :_racc_yyparse_c # :nodoc:
+    #   Racc_Runtime_Core_Version    = Racc_Runtime_Core_Version_C # :nodoc:
+    #   Racc_Runtime_Core_Revision   = Racc_Runtime_Core_Revision_C # :nodoc:
+    #   Racc_Runtime_Type            = 'c' # :nodoc:
+    # rescue LoadError
+      Racc_Main_Parsing_Routine    = :_racc_do_parse_rb
+      Racc_YY_Parse_Method         = :_racc_yyparse_rb
+      Racc_Runtime_Core_Version    = Racc_Runtime_Core_Version_R
+      Racc_Runtime_Core_Revision   = Racc_Runtime_Core_Revision_R
+      Racc_Runtime_Type            = 'ruby'
+    # end
+
+    def Parser.racc_runtime_type # :nodoc:
+      Racc_Runtime_Type
+    end
+
+    def _racc_setup
+      @yydebug = false unless self.class::Racc_debug_parser
+      @yydebug = false unless defined?(@yydebug)
+      if @yydebug
+        @racc_debug_out = $stderr unless defined?(@racc_debug_out)
+        @racc_debug_out ||= $stderr
+      end
+      arg = self.class::Racc_arg
+      arg[13] = true if arg.size < 14
+      arg
+    end
+
+    def _racc_init_sysvars
+      @racc_state  = [0]
+      @racc_tstack = []
+      @racc_vstack = []
+
+      @racc_t = nil
+      @racc_val = nil
+
+      @racc_read_next = true
+
+      @racc_user_yyerror = false
+      @racc_error_status = 0
+    end
+
+    # The entry point of the parser. This method is used with #next_token.
+    # If Racc wants to get token (and its value), calls next_token.
+    #
+    # Example:
+    #     def parse
+    #       @q = [[1,1],
+    #             [2,2],
+    #             [3,3],
+    #             [false, '$']]
+    #       do_parse
+    #     end
+    #
+    #     def next_token
+    #       @q.shift
+    #     end
+    def do_parse
+      __send__(Racc_Main_Parsing_Routine, _racc_setup(), false)
+    end
+
+    # The method to fetch next token.
+    # If you use #do_parse method, you must implement #next_token.
+    #
+    # The format of return value is [TOKEN_SYMBOL, VALUE].
+    # +token-symbol+ is represented by Ruby's symbol by default, e.g. :IDENT
+    # for 'IDENT'.  ";" (String) for ';'.
+    #
+    # The final symbol (End of file) must be false.
+    def next_token
+      raise NotImplementedError, "#{self.class}\#next_token is not defined"
+    end
+
+    def _racc_do_parse_rb(arg, in_debug)
+      action_table, action_check, action_default, action_pointer,
+      _,            _,            _,              _,
+      _,            _,            token_table,    _,
+      _,            _,            * = arg
+
+      _racc_init_sysvars
+      tok = act = i = nil
+
+      catch(:racc_end_parse) {
+        while true
+          if i = action_pointer[@racc_state[-1]]
+            if @racc_read_next
+              if @racc_t != 0   # not EOF
+                tok, @racc_val = next_token()
+                unless tok      # EOF
+                  @racc_t = 0
+                else
+                  @racc_t = (token_table[tok] or 1)   # error token
+                end
+                racc_read_token(@racc_t, tok, @racc_val) if @yydebug
+                @racc_read_next = false
+              end
+            end
+            i += @racc_t
+            unless i >= 0 and
+                   act = action_table[i] and
+                   action_check[i] == @racc_state[-1]
+              act = action_default[@racc_state[-1]]
+            end
+          else
+            act = action_default[@racc_state[-1]]
+          end
+          while act = _racc_evalact(act, arg)
+            ;
+          end
+        end
+      }
+    end
+
+    # Another entry point for the parser.
+    # If you use this method, you must implement RECEIVER#METHOD_ID method.
+    #
+    # RECEIVER#METHOD_ID is a method to get next token.
+    # It must 'yield' the token, which format is [TOKEN-SYMBOL, VALUE].
+    def yyparse(recv, mid)
+      __send__(Racc_YY_Parse_Method, recv, mid, _racc_setup(), true)
+    end
+
+    def _racc_yyparse_rb(recv, mid, arg, c_debug)
+      action_table, action_check, action_default, action_pointer,
+      _,             _,            _,              _,
+      _,            _,            token_table,    _,
+      _,            _,            * = arg
+
+      _racc_init_sysvars
+      act = nil
+      i = nil
+
+      catch(:racc_end_parse) {
+        until i = action_pointer[@racc_state[-1]]
+          while act = _racc_evalact(action_default[@racc_state[-1]], arg)
+            ;
+          end
+        end
+        recv.__send__(mid) do |tok, val|
+          unless tok
+            @racc_t = 0
+          else
+            @racc_t = (token_table[tok] or 1)   # error token
+          end
+          @racc_val = val
+          @racc_read_next = false
+
+          i += @racc_t
+          unless i >= 0 and
+                 act = action_table[i] and
+                 action_check[i] == @racc_state[-1]
+            act = action_default[@racc_state[-1]]
+          end
+          while act = _racc_evalact(act, arg)
+            ;
+          end
+
+          while not(i = action_pointer[@racc_state[-1]]) or
+                not @racc_read_next or
+                @racc_t == 0   # $
+            unless i and i += @racc_t and
+                   i >= 0 and
+                   act = action_table[i] and
+                   action_check[i] == @racc_state[-1]
+              act = action_default[@racc_state[-1]]
+            end
+            while act = _racc_evalact(act, arg)
+              ;
+            end
+          end
+        end
+      }
+    end
+
+    ###
+    ### common
+    ###
+
+    def _racc_evalact(act, arg)
+      action_table, action_check, _, action_pointer,
+      _,   _, _, _,
+      _,   _, _, shift_n,  reduce_n,
+      _,   _, * = arg
+
+      if act > 0 and act < shift_n
+        #
+        # shift
+        #
+        if @racc_error_status > 0
+          @racc_error_status -= 1 unless @racc_t == 1   # error token
+        end
+        @racc_vstack.push @racc_val
+        @racc_state.push act
+        @racc_read_next = true
+        if @yydebug
+          @racc_tstack.push @racc_t
+          racc_shift @racc_t, @racc_tstack, @racc_vstack
+        end
+
+      elsif act < 0 and act > -reduce_n
+        #
+        # reduce
+        #
+        code = catch(:racc_jump) {
+          @racc_state.push _racc_do_reduce(arg, act)
+          false
+        }
+        if code
+          case code
+          when 1 # yyerror
+            @racc_user_yyerror = true   # user_yyerror
+            return -reduce_n
+          when 2 # yyaccept
+            return shift_n
+          else
+            raise '[Racc Bug] unknown jump code'
+          end
+        end
+
+      elsif act == shift_n
+        #
+        # accept
+        #
+        racc_accept if @yydebug
+        throw :racc_end_parse, @racc_vstack[0]
+
+      elsif act == -reduce_n
+        #
+        # error
+        #
+        case @racc_error_status
+        when 0
+          unless arg[21]    # user_yyerror
+            on_error @racc_t, @racc_val, @racc_vstack
+          end
+        when 3
+          if @racc_t == 0   # is $
+            throw :racc_end_parse, nil
+          end
+          @racc_read_next = true
+        end
+        @racc_user_yyerror = false
+        @racc_error_status = 3
+        while true
+          if i = action_pointer[@racc_state[-1]]
+            i += 1   # error token
+            if  i >= 0 and
+                (act = action_table[i]) and
+                action_check[i] == @racc_state[-1]
+              break
+            end
+          end
+          throw :racc_end_parse, nil if @racc_state.size <= 1
+          @racc_state.pop
+          @racc_vstack.pop
+          if @yydebug
+            @racc_tstack.pop
+            racc_e_pop @racc_state, @racc_tstack, @racc_vstack
+          end
+        end
+        return act
+
+      else
+        raise "[Racc Bug] unknown action #{act.inspect}"
+      end
+
+      racc_next_state(@racc_state[-1], @racc_state) if @yydebug
+
+      nil
+    end
+
+    def _racc_do_reduce(arg, act)
+      _, _, _, _,
+      goto_table,   goto_check,   goto_default,   goto_pointer,
+      nt_base,      reduce_table, _,    _,
+      _,     use_result,   * = arg
+      state = @racc_state
+      vstack = @racc_vstack
+      tstack = @racc_tstack
+
+      i = act * -3
+      len       = reduce_table[i]
+      reduce_to = reduce_table[i+1]
+      method_id = reduce_table[i+2]
+      void_array = []
+
+      tmp_t = tstack[-len, len] if @yydebug
+      tmp_v = vstack[-len, len]
+      tstack[-len, len] = void_array if @yydebug
+      vstack[-len, len] = void_array
+      state[-len, len]  = void_array
+
+      # tstack must be updated AFTER method call
+      if use_result
+        vstack.push __send__(method_id, tmp_v, vstack, tmp_v[0])
+      else
+        vstack.push __send__(method_id, tmp_v, vstack)
+      end
+      tstack.push reduce_to
+
+      racc_reduce(tmp_t, reduce_to, tstack, vstack) if @yydebug
+
+      k1 = reduce_to - nt_base
+      if i = goto_pointer[k1]
+        i += state[-1]
+        if i >= 0 and (curstate = goto_table[i]) and goto_check[i] == k1
+          return curstate
+        end
+      end
+      goto_default[k1]
+    end
+
+    # This method is called when a parse error is found.
+    #
+    # ERROR_TOKEN_ID is an internal ID of token which caused error.
+    # You can get string representation of this ID by calling
+    # #token_to_str.
+    #
+    # ERROR_VALUE is a value of error token.
+    #
+    # value_stack is a stack of symbol values.
+    # DO NOT MODIFY this object.
+    #
+    # This method raises ParseError by default.
+    #
+    # If this method returns, parsers enter "error recovering mode".
+    def on_error(t, val, vstack)
+      raise ParseError, sprintf("\nparse error on value %s (%s)",
+                                val.inspect, token_to_str(t) || '?')
+    end
+
+    # Enter error recovering mode.
+    # This method does not call #on_error.
+    def yyerror
+      throw :racc_jump, 1
+    end
+
+    # Exit parser.
+    # Return value is Symbol_Value_Stack[0].
+    def yyaccept
+      throw :racc_jump, 2
+    end
+
+    # Leave error recovering mode.
+    def yyerrok
+      @racc_error_status = 0
+    end
+
+    # For debugging output
+    def racc_read_token(t, tok, val)
+      @racc_debug_out.print 'read    '
+      @racc_debug_out.print tok.inspect, '(', racc_token2str(t), ') '
+      @racc_debug_out.puts val.inspect
+      @racc_debug_out.puts
+    end
+
+    def racc_shift(tok, tstack, vstack)
+      @racc_debug_out.puts "shift   #{racc_token2str tok}"
+      racc_print_stacks tstack, vstack
+      @racc_debug_out.puts
+    end
+
+    def racc_reduce(toks, sim, tstack, vstack)
+      out = @racc_debug_out
+      out.print 'reduce '
+      if toks.empty?
+        out.print ' <none>'
+      else
+        toks.each {|t| out.print ' ', racc_token2str(t) }
+      end
+      out.puts " --> #{racc_token2str(sim)}"
+
+      racc_print_stacks tstack, vstack
+      @racc_debug_out.puts
+    end
+
+    def racc_accept
+      @racc_debug_out.puts 'accept'
+      @racc_debug_out.puts
+    end
+
+    def racc_e_pop(state, tstack, vstack)
+      @racc_debug_out.puts 'error recovering mode: pop token'
+      racc_print_states state
+      racc_print_stacks tstack, vstack
+      @racc_debug_out.puts
+    end
+
+    def racc_next_state(curstate, state)
+      @racc_debug_out.puts  "goto    #{curstate}"
+      racc_print_states state
+      @racc_debug_out.puts
+    end
+
+    def racc_print_stacks(t, v)
+      out = @racc_debug_out
+      out.print '        ['
+      t.each_index do |i|
+        out.print ' (', racc_token2str(t[i]), ' ', v[i].inspect, ')'
+      end
+      out.puts ' ]'
+    end
+
+    def racc_print_states(s)
+      out = @racc_debug_out
+      out.print '        ['
+      s.each {|st| out.print ' ', st }
+      out.puts ' ]'
+    end
+
+    def racc_token2str(tok)
+      self.class::Racc_token_to_s_table[tok] or
+          raise "[Racc Bug] can't convert token #{tok} to string"
+    end
+
+    # Convert internal ID of token symbol to the string.
+    def token_to_str(t)
+      self.class::Racc_token_to_s_table[t]
+    end
+
+  end
+
+end
diff --git a/stdlib/rbconfig.rb b/stdlib/rbconfig.rb
new file mode 100644
index 00000000..f2dbe690
--- /dev/null
+++ b/stdlib/rbconfig.rb
@@ -0,0 +1,18 @@
+module RbConfig
+  versions = RUBY_VERSION.split('.')
+  CONFIG = {
+    'ruby_version' => RUBY_VERSION,
+    'MAJOR'        => versions[0],
+    'MINOR'        => versions[1],
+    'TEENY'        => versions[2],
+    'RUBY'         => RUBY_ENGINE,
+    'RUBY_INSTALL_NAME' => RUBY_ENGINE,
+    'RUBY_SO_NAME'      => RUBY_ENGINE,
+    'target_os'         => 'ECMA-262',
+    'host_os'           => 'ECMA-262',
+    'PATH_SEPARATOR'    => ':'
+  }
+end
+
+# required for mspec it would appear
+RUBY_EXE = 'bundle exec exe/opal'
diff --git a/stdlib/rbconfig/sizeof.rb b/stdlib/rbconfig/sizeof.rb
new file mode 100644
index 00000000..fed6a1d3
--- /dev/null
+++ b/stdlib/rbconfig/sizeof.rb
@@ -0,0 +1,52 @@
+# This file is not intended for real checks,
+# but just to make happy libraries needing it.
+
+require_relative '../rbconfig'
+
+RbConfig::SIZEOF = {
+  'clock_t'              => 8,
+  'double _Complex'      => 16,
+  'double'               => 8,
+  'float _Complex'       => 8,
+  'float'                => 4,
+  'int'                  => 4,
+  'int128_t'             => 16,
+  'int16_t'              => 2,
+  'int32_t'              => 4,
+  'int64_t'              => 8,
+  'int8_t'               => 1,
+  'intmax_t'             => 8,
+  'intptr_t'             => 8,
+  'int_fast16_t'         => 2,
+  'int_fast32_t'         => 4,
+  'int_fast64_t'         => 8,
+  'int_fast8_t'          => 1,
+  'int_least16_t'        => 2,
+  'int_least32_t'        => 4,
+  'int_least64_t'        => 8,
+  'int_least8_t'         => 1,
+  'long double _Complex' => 32,
+  'long double'          => 16,
+  'long long'            => 8,
+  'long'                 => 8,
+  'off_t'                => 8,
+  'ptrdiff_t'            => 8,
+  'short'                => 2,
+  'sig_atomic_t'         => 4,
+  'size_t'               => 8,
+  'ssize_t'              => 8,
+  'time_t'               => 8,
+  'uint128_t'            => 16,
+  'uint16_t'             => 2,
+  'uint32_t'             => 4,
+  'uint64_t'             => 8,
+  'uint8_t'              => 1,
+  'uintptr_t'            => 8,
+  'void*'                => 8,
+  'wchar_t'              => 4,
+  'wctrans_t'            => 4,
+  'wctype_t'             => 4,
+  'wint_t'               => 4,
+  '_Bool'                => 1,
+  '__int128'             => 16,
+}
diff --git a/stdlib/securerandom.rb b/stdlib/securerandom.rb
new file mode 100644
index 00000000..7ac19578
--- /dev/null
+++ b/stdlib/securerandom.rb
@@ -0,0 +1,66 @@
+require 'corelib/random/formatter'
+
+module SecureRandom
+  extend Random::Formatter
+
+  %x{
+    var gen_random_bytes;
+
+    if ((Opal.global.crypto   && Opal.global.crypto.getRandomValues) ||
+        (Opal.global.msCrypto && Opal.global.msCrypto.getRandomValues)) {
+      // This method is available in all non-ancient web browsers.
+
+      var crypto = Opal.global.crypto || Opal.global.msCrypto;
+      gen_random_bytes = function(count) {
+        var storage = new Uint8Array(count);
+        crypto.getRandomValues(storage);
+        return storage;
+      };
+    }
+    else if (Opal.global.crypto && Opal.global.crypto.randomBytes) {
+      // This method is available in Node.js
+
+      gen_random_bytes = function(count) {
+        return Opal.global.crypto.randomBytes(count);
+      };
+    }
+    else {
+      // Let's dangerously polyfill this interface with our MersenneTwister
+      // xor native JS Math.random xor something about current time...
+      // That's hardly secure, but the following warning should provide a person
+      // deploying the code a good idea on what he should do to make his deployment
+      // actually secure.
+      // It's possible to interface other libraries by adding an else if above if
+      // that's really desired.
+
+      #{warn 'Can\'t get a Crypto.getRandomValues interface or Crypto.randomBytes.' \
+             'The random values generated with SecureRandom won\'t be ' \
+             'cryptographically secure'}
+
+      gen_random_bytes = function(count) {
+        var storage = new Uint8Array(count);
+        for (var i = 0; i < count; i++) {
+          storage[i] = #{rand(0xff)} ^ Math.floor(Math.random() * 256);
+          storage[i] ^= +(new Date())>>#{rand(0xff)}&0xff;
+        }
+        return storage;
+      }
+    }
+  }
+
+  def self.bytes(bytes = nil)
+    gen_random(bytes)
+  end
+
+  def self.gen_random(count = nil)
+    count = Random._verify_count(count)
+    out = ''
+    %x{
+      var bytes = gen_random_bytes(#{count});
+      for (var i = 0; i < #{count}; i++) {
+        out += String.fromCharCode(bytes[i]);
+      }
+    }
+    out.encode('ASCII-8BIT')
+  end
+end
diff --git a/stdlib/set.rb b/stdlib/set.rb
new file mode 100644
index 00000000..30849de9
--- /dev/null
+++ b/stdlib/set.rb
@@ -0,0 +1,237 @@
+# Portions Copyright (c) 2002-2013 Akinori MUSHA <knu@iDaemons.org>
+class ::Set
+  include ::Enumerable
+
+  def self.[](*ary)
+    new(ary)
+  end
+
+  def initialize(enum = nil, &block)
+    @hash = {}
+
+    return if enum.nil?
+    ::Kernel.raise ::ArgumentError, 'value must be enumerable' unless ::Enumerable === enum
+
+    if block
+      enum.each { |item| add yield(item) }
+    else
+      merge(enum)
+    end
+  end
+
+  def dup
+    result = self.class.new
+    result.merge(self)
+  end
+
+  def -(enum)
+    unless enum.respond_to? :each
+      ::Kernel.raise ::ArgumentError, 'value must be enumerable'
+    end
+
+    dup.subtract(enum)
+  end
+
+  def inspect
+    "#<Set: {#{to_a.join(',')}}>"
+  end
+
+  def ==(other)
+    if equal?(other)
+      true
+    elsif other.instance_of?(self.class)
+      @hash == other.instance_variable_get(:@hash)
+    elsif other.is_a?(::Set) && size == other.size
+      other.all? { |o| @hash.include?(o) }
+    else
+      false
+    end
+  end
+
+  def add(o)
+    @hash[o] = true
+    self
+  end
+
+  def classify(&block)
+    return enum_for(:classify) unless block_given?
+
+    result = ::Hash.new { |h, k| h[k] = self.class.new }
+
+    each { |item| result[yield(item)].add item }
+
+    result
+  end
+
+  def collect!(&block)
+    return enum_for(:collect!) unless block_given?
+    result = self.class.new
+    each { |item| result << yield(item) }
+    replace result
+  end
+
+  def delete(o)
+    @hash.delete(o)
+    self
+  end
+
+  def delete?(o)
+    if include?(o)
+      delete(o)
+      self
+    end
+  end
+
+  def delete_if
+    return enum_for(:delete_if) unless block_given?
+    # @hash.delete_if should be faster, but using it breaks the order
+    # of enumeration in subclasses.
+    select { |o| yield o }.each { |o| @hash.delete(o) }
+    self
+  end
+
+  def keep_if
+    return enum_for(:keep_if) unless block_given?
+    reject { |o| yield o }.each { |o| @hash.delete(o) }
+    self
+  end
+
+  def reject!(&block)
+    return enum_for(:reject!) unless block_given?
+    before = size
+    delete_if(&block)
+    size == before ? nil : self
+  end
+
+  def select!(&block)
+    return enum_for(:select!) unless block_given?
+    before = size
+    keep_if(&block)
+    size == before ? nil : self
+  end
+
+  def add?(o)
+    if include?(o)
+      nil
+    else
+      add(o)
+    end
+  end
+
+  def each(&block)
+    return enum_for(:each) unless block_given?
+    @hash.each_key(&block)
+    self
+  end
+
+  def empty?
+    @hash.empty?
+  end
+
+  def eql?(other)
+    @hash.eql?(other.instance_eval { @hash })
+  end
+
+  def clear
+    @hash.clear
+    self
+  end
+
+  def include?(o)
+    @hash.include?(o)
+  end
+
+  def merge(enum)
+    enum.each { |item| add item }
+    self
+  end
+
+  def replace(enum)
+    clear
+    merge(enum)
+
+    self
+  end
+
+  def size
+    @hash.size
+  end
+
+  def subtract(enum)
+    enum.each { |item| delete item }
+    self
+  end
+
+  def |(enum)
+    unless enum.respond_to? :each
+      ::Kernel.raise ::ArgumentError, 'value must be enumerable'
+    end
+    dup.merge(enum)
+  end
+
+  %x{
+    function is_set(set) {
+      #{`set`.is_a?(::Set) || ::Kernel.raise(::ArgumentError, 'value must be a set')}
+    }
+  }
+
+  def superset?(set)
+    `is_set(set)`
+    return false if size < set.size
+    set.all? { |o| include?(o) }
+  end
+
+  def proper_superset?(set)
+    `is_set(set)`
+    return false if size <= set.size
+    set.all? { |o| include?(o) }
+  end
+
+  def subset?(set)
+    `is_set(set)`
+    return false if set.size < size
+    all? { |o| set.include?(o) }
+  end
+
+  def proper_subset?(set)
+    `is_set(set)`
+    return false if set.size <= size
+    all? { |o| set.include?(o) }
+  end
+
+  def intersect?(set)
+    `is_set(set)`
+    if size < set.size
+      any? { |o| set.include?(o) }
+    else
+      set.any? { |o| include?(o) }
+    end
+  end
+
+  def disjoint?(set)
+    !intersect?(set)
+  end
+
+  def to_a
+    @hash.keys
+  end
+
+  alias + |
+  alias < proper_subset?
+  alias << add
+  alias <= subset?
+  alias > proper_superset?
+  alias >= superset?
+  alias difference -
+  alias filter! select!
+  alias length size
+  alias map! collect!
+  alias member? include?
+  alias union |
+end
+
+module ::Enumerable
+  def to_set(klass = Set, *args, &block)
+    klass.new(self, *args, &block)
+  end
+end
diff --git a/stdlib/shellwords.rb b/stdlib/shellwords.rb
new file mode 100644
index 00000000..f1480214
--- /dev/null
+++ b/stdlib/shellwords.rb
@@ -0,0 +1,240 @@
+# frozen-string-literal: true
+##
+# == Manipulates strings like the UNIX Bourne shell
+#
+# This module manipulates strings according to the word parsing rules
+# of the UNIX Bourne shell.
+#
+# The shellwords() function was originally a port of shellwords.pl,
+# but modified to conform to the Shell & Utilities volume of the IEEE
+# Std 1003.1-2008, 2016 Edition [1].
+#
+# === Usage
+#
+# You can use Shellwords to parse a string into a Bourne shell friendly Array.
+#
+#   require 'shellwords'
+#
+#   argv = Shellwords.split('three blind "mice"')
+#   argv #=> ["three", "blind", "mice"]
+#
+# Once you've required Shellwords, you can use the #split alias
+# String#shellsplit.
+#
+#   argv = "see how they run".shellsplit
+#   argv #=> ["see", "how", "they", "run"]
+#
+# They treat quotes as special characters, so an unmatched quote will
+# cause an ArgumentError.
+#
+#   argv = "they all ran after the farmer's wife".shellsplit
+#        #=> ArgumentError: Unmatched quote: ...
+#
+# Shellwords also provides methods that do the opposite.
+# Shellwords.escape, or its alias, String#shellescape, escapes
+# shell metacharacters in a string for use in a command line.
+#
+#   filename = "special's.txt"
+#
+#   system("cat -- #{filename.shellescape}")
+#   # runs "cat -- special\\'s.txt"
+#
+# Note the '--'.  Without it, cat(1) will treat the following argument
+# as a command line option if it starts with '-'.  It is guaranteed
+# that Shellwords.escape converts a string to a form that a Bourne
+# shell will parse back to the original string, but it is the
+# programmer's responsibility to make sure that passing an arbitrary
+# argument to a command does no harm.
+#
+# Shellwords also comes with a core extension for Array, Array#shelljoin.
+#
+#   dir = "Funny GIFs"
+#   argv = %W[ls -lta -- #{dir}]
+#   system(argv.shelljoin + " | less")
+#   # runs "ls -lta -- Funny\\ GIFs | less"
+#
+# You can use this method to build a complete command line out of an
+# array of arguments.
+#
+# === Authors
+# * Wakou Aoyama
+# * Akinori MUSHA <knu@iDaemons.org>
+#
+# === Contact
+# * Akinori MUSHA <knu@iDaemons.org> (current maintainer)
+#
+# === Resources
+#
+# 1: {IEEE Std 1003.1-2008, 2016 Edition, the Shell & Utilities volume}[http://pubs.opengroup.org/onlinepubs/9699919799/utilities/contents.html]
+
+module Shellwords
+  # Splits a string into an array of tokens in the same way the UNIX
+  # Bourne shell does.
+  #
+  #   argv = Shellwords.split('here are "two words"')
+  #   argv #=> ["here", "are", "two words"]
+  #
+  # Note, however, that this is not a command line parser.  Shell
+  # metacharacters except for the single and double quotes and
+  # backslash are not treated as such.
+  #
+  #   argv = Shellwords.split('ruby my_prog.rb | less')
+  #   argv #=> ["ruby", "my_prog.rb", "|", "less"]
+  #
+  # String#shellsplit is a shortcut for this function.
+  #
+  #   argv = 'here are "two words"'.shellsplit
+  #   argv #=> ["here", "are", "two words"]
+  def shellsplit(line)
+    line += ' ' # Somehow this is needed for the JS regexp engine
+    words = []
+    field = String.new
+    line.scan(/\s*(?:([^\s\\\'\"]+)|'([^\']*)'|"((?:[^\"\\]|\\.)*)"|(\\.?)|(\S))(\r?\n?\Z|\s)?/m) do |(word, sq, dq, esc, garbage, sep)|
+      raise ArgumentError, "Unmatched quote: #{line.inspect}" if garbage
+      # 2.2.3 Double-Quotes:
+      #
+      #   The <backslash> shall retain its special meaning as an
+      #   escape character only when followed by one of the following
+      #   characters when considered special:
+      #
+      #   $ ` " \ <newline>
+      field += (word || sq || (dq && dq.gsub(/\\([$`"\\\n])/, '\\1')) || esc.gsub(/\\(.)/, '\\1'))
+      if sep
+        words << field
+        field = String.new
+      end
+    end
+    words
+  end
+
+  alias shellwords shellsplit
+
+  module_function :shellsplit, :shellwords
+
+  class << self
+    alias split shellsplit
+  end
+
+  # Escapes a string so that it can be safely used in a Bourne shell
+  # command line.  +str+ can be a non-string object that responds to
+  # +to_s+.
+  #
+  # Note that a resulted string should be used unquoted and is not
+  # intended for use in double quotes nor in single quotes.
+  #
+  #   argv = Shellwords.escape("It's better to give than to receive")
+  #   argv #=> "It\\'s\\ better\\ to\\ give\\ than\\ to\\ receive"
+  #
+  # String#shellescape is a shorthand for this function.
+  #
+  #   argv = "It's better to give than to receive".shellescape
+  #   argv #=> "It\\'s\\ better\\ to\\ give\\ than\\ to\\ receive"
+  #
+  #   # Search files in lib for method definitions
+  #   pattern = "^[ \t]*def "
+  #   open("| grep -Ern -e #{pattern.shellescape} lib") { |grep|
+  #     grep.each_line { |line|
+  #       file, lineno, matched_line = line.split(':', 3)
+  #       # ...
+  #     }
+  #   }
+  #
+  # It is the caller's responsibility to encode the string in the right
+  # encoding for the shell environment where this string is used.
+  #
+  # Multibyte characters are treated as multibyte characters, not as bytes.
+  #
+  # Returns an empty quoted String if +str+ has a length of zero.
+  def shellescape(str)
+    str = str.to_s
+
+    # An empty argument will be skipped, so return empty quotes.
+    return "''".dup if str.empty?
+
+    str = str.dup
+
+    # Treat multibyte characters as is.  It is the caller's responsibility
+    # to encode the string in the right encoding for the shell
+    # environment.
+    str = str.gsub(/[^A-Za-z0-9_\-.,:+\/@\n]/, '\\\\\\&')
+
+    # A LF cannot be escaped with a backslash because a backslash + LF
+    # combo is regarded as a line continuation and simply ignored.
+    str = str.gsub(/\n/, "'\n'")
+
+    str
+  end
+
+  module_function :shellescape
+
+  class << self
+    alias escape shellescape
+  end
+
+  # Builds a command line string from an argument list, +array+.
+  #
+  # All elements are joined into a single string with fields separated by a
+  # space, where each element is escaped for the Bourne shell and stringified
+  # using +to_s+.
+  #
+  #   ary = ["There's", "a", "time", "and", "place", "for", "everything"]
+  #   argv = Shellwords.join(ary)
+  #   argv #=> "There\\'s a time and place for everything"
+  #
+  # Array#shelljoin is a shortcut for this function.
+  #
+  #   ary = ["Don't", "rock", "the", "boat"]
+  #   argv = ary.shelljoin
+  #   argv #=> "Don\\'t rock the boat"
+  #
+  # You can also mix non-string objects in the elements as allowed in Array#join.
+  #
+  #   output = `#{['ps', '-p', $$].shelljoin}`
+  #
+  def shelljoin(array)
+    array.map { |arg| shellescape(arg) }.join(' ')
+  end
+
+  module_function :shelljoin
+
+  class << self
+    alias join shelljoin
+  end
+end
+
+class String
+  # call-seq:
+  #   str.shellsplit => array
+  #
+  # Splits +str+ into an array of tokens in the same way the UNIX
+  # Bourne shell does.
+  #
+  # See Shellwords.shellsplit for details.
+  def shellsplit
+    Shellwords.split(self)
+  end
+
+  # call-seq:
+  #   str.shellescape => string
+  #
+  # Escapes +str+ so that it can be safely used in a Bourne shell
+  # command line.
+  #
+  # See Shellwords.shellescape for details.
+  def shellescape
+    Shellwords.escape(self)
+  end
+end
+
+class Array
+  # call-seq:
+  #   array.shelljoin => string
+  #
+  # Builds a command line string from an argument list +array+ joining
+  # all elements escaped for the Bourne shell and separated by a space.
+  #
+  # See Shellwords.shelljoin for details.
+  def shelljoin
+    Shellwords.join(self)
+  end
+end
diff --git a/stdlib/singleton.rb b/stdlib/singleton.rb
new file mode 100644
index 00000000..81f940e9
--- /dev/null
+++ b/stdlib/singleton.rb
@@ -0,0 +1,39 @@
+module Singleton
+  def clone
+    raise TypeError, "can't clone instance of singleton #{self.class}"
+  end
+
+  def dup
+    raise TypeError, "can't dup instance of singleton #{self.class}"
+  end
+
+  module SingletonClassMethods
+    def clone
+      Singleton.__init__(super)
+    end
+
+    def inherited(sub_klass)
+      super
+      Singleton.__init__(sub_klass)
+    end
+  end
+
+  class << Singleton
+    def __init__(klass)
+      klass.instance_eval do
+        @singleton__instance__ = nil
+      end
+      def klass.instance
+        return @singleton__instance__ if @singleton__instance__
+        @singleton__instance__ = new
+      end
+      klass
+    end
+
+    def included(klass)
+      super
+      klass.extend SingletonClassMethods
+      Singleton.__init__(klass)
+    end
+  end
+end
diff --git a/stdlib/stringio.rb b/stdlib/stringio.rb
new file mode 100644
index 00000000..2b18ae40
--- /dev/null
+++ b/stdlib/stringio.rb
@@ -0,0 +1,114 @@
+class StringIO < IO
+  def self.open(string = "", mode = nil, &block)
+    io  = new(string, mode)
+    res = block.call(io)
+    io.close
+
+    res
+  end
+
+  attr_accessor :string
+
+  def initialize(string = "", mode = 'rw')
+    @string   = string
+    @position = 0
+
+    super(nil, mode)
+  end
+
+  def eof?
+    check_readable
+
+    @position == @string.length
+  end
+
+  def seek(pos, whence = IO::SEEK_SET)
+    # Let's reset the read buffer, because it will be most likely wrong
+    @read_buffer = ''
+
+    case whence
+    when IO::SEEK_SET
+      raise Errno::EINVAL unless pos >= 0
+
+      @position = pos
+
+    when IO::SEEK_CUR
+      if @position + pos > @string.length
+        @position = @string.length
+      else
+        @position += pos
+      end
+
+    when IO::SEEK_END
+      if pos > @string.length
+        @position = 0
+      else
+        @position -= pos
+      end
+    end
+
+    0
+  end
+
+  def tell
+    @position
+  end
+
+  def rewind
+    seek 0
+  end
+
+  def write(string)
+    check_writable
+
+    # Let's reset the read buffer, because it will be most likely wrong
+    @read_buffer = ''
+
+    string = String(string)
+
+    if @string.length == @position
+      @string   += string
+      @position += string.length
+    else
+      before = @string[0 .. @position - 1]
+      after  = @string[@position + string.length .. -1]
+
+      @string   = before + string + after
+      @position += string.length
+    end
+  end
+
+  def read(length = nil, outbuf = nil)
+    check_readable
+
+    return if eof?
+
+    string = if length
+      str = @string[@position, length]
+      @position += length
+      @position = @string.length if @position > @string.length
+      str
+    else
+      str = @string[@position .. -1]
+      @position = @string.length
+      str
+    end
+
+    if outbuf
+      outbuf.write(string)
+    else
+      string
+    end
+  end
+
+  def sysread(length)
+    check_readable
+
+    read(length)
+  end
+
+  alias eof eof?
+  alias pos tell
+  alias pos= seek
+  alias readpartial read
+end
diff --git a/stdlib/strscan.rb b/stdlib/strscan.rb
new file mode 100644
index 00000000..66fa61a3
--- /dev/null
+++ b/stdlib/strscan.rb
@@ -0,0 +1,328 @@
+class StringScanner
+  attr_reader :pos, :matched
+
+  def initialize(string)
+    @string  = string
+    @pos     = 0
+    @matched = nil
+    @working = string
+    @match   = []
+  end
+
+  attr_reader :string
+
+  def beginning_of_line?
+    `#{@pos} === 0 || #{@string}.charAt(#{@pos} - 1) === "\n"`
+  end
+
+  def scan(pattern)
+    pattern = anchor(pattern)
+
+    %x{
+      var result = pattern.exec(#{@working});
+
+      if (result == null) {
+        return #{@matched} = nil;
+      }
+      else if (typeof(result) === 'object') {
+        #{@prev_pos} = #{@pos};
+        #{@pos}     += result[0].length;
+        #{@working}  = #{@working}.substring(result[0].length);
+        #{@matched}  = result[0];
+        #{@match}    = result;
+
+        return result[0];
+      }
+      else if (typeof(result) === 'string') {
+        #{@pos}     += result.length;
+        #{@working}  = #{@working}.substring(result.length);
+
+        return result;
+      }
+      else {
+        return nil;
+      }
+    }
+  end
+
+  def scan_until(pattern)
+    pattern = anchor(pattern)
+
+    %x{
+      var pos     = #{@pos},
+          working = #{@working},
+          result;
+
+      while (true) {
+        result   = pattern.exec(working);
+        pos     += 1;
+        working  = working.substr(1);
+
+        if (result == null) {
+          if (working.length === 0) {
+            #{@match} = [];
+            return #{@matched} = nil;
+          }
+
+          continue;
+        }
+
+        #{@matched}  = #{@string}.substr(#{@pos}, pos - #{@pos} - 1 + result[0].length);
+        #{@match}    = result;
+        #{@prev_pos} = pos - 1;
+        #{@pos}      = pos;
+        #{@working}  = working.substr(result[0].length);
+
+        return #{@matched};
+      }
+    }
+  end
+
+  def [](idx)
+    if @match.empty?
+      return nil
+    end
+    case idx
+    when Symbol
+      idx = idx.to_s
+    when String
+      # noop
+    else
+      idx = ::Opal.coerce_to!(idx, Integer, :to_int)
+    end
+    %x{
+      var match = #{@match};
+
+      if (idx < 0) {
+        idx += match.length;
+      }
+
+      if (idx < 0 || idx >= match.length) {
+        return nil;
+      }
+
+      if (match[idx] == null) {
+        return nil;
+      }
+
+      return match[idx];
+    }
+  end
+
+  def check(pattern)
+    pattern = anchor(pattern)
+
+    %x{
+      var result = pattern.exec(#{@working});
+
+      if (result == null) {
+        return #{@matched} = nil;
+      }
+
+      return #{@matched} = result[0];
+    }
+  end
+
+  def check_until(pattern)
+    %x{
+      var prev_pos = #{@prev_pos},
+          pos      = #{@pos};
+
+      var result = #{scan_until(pattern)};
+
+      if (result !== nil) {
+        #{@matched} = result.substr(-1);
+        #{@working} = #{@string}.substr(pos);
+      }
+
+      #{@prev_pos} = prev_pos;
+      #{@pos}      = pos;
+
+      return result;
+    }
+  end
+
+  def peek(length)
+    `#{@working}.substring(0, length)`
+  end
+
+  def eos?
+    `#{@working}.length === 0`
+  end
+
+  def exist?(pattern)
+    %x{
+      var result = pattern.exec(#{@working});
+
+      if (result == null) {
+        return nil;
+      }
+      else if (result.index == 0) {
+        return 0;
+      }
+      else {
+        return result.index + 1;
+      }
+    }
+  end
+
+  def skip(pattern)
+    pattern = anchor(pattern)
+
+    %x{
+      var result = pattern.exec(#{@working});
+
+      if (result == null) {
+        #{@match} = [];
+        return #{@matched} = nil;
+      }
+      else {
+        var match_str = result[0];
+        var match_len = match_str.length;
+
+        #{@matched}   = match_str;
+        #{@match}     = result;
+        #{@prev_pos}  = #{@pos};
+        #{@pos}      += match_len;
+        #{@working}   = #{@working}.substring(match_len);
+
+        return match_len;
+      }
+    }
+  end
+
+  def skip_until(pattern)
+    %x{
+      var result = #{scan_until(pattern)};
+
+      if (result === nil) {
+        return nil;
+      }
+      else {
+        #{@matched} = result.substr(-1);
+
+        return result.length;
+      }
+    }
+  end
+
+  def get_byte
+    %x{
+      var result = nil;
+
+      if (#{@pos} < #{@string}.length) {
+        #{@prev_pos}  = #{@pos};
+        #{@pos}      += 1;
+        result      = #{@matched} = #{@working}.substring(0, 1);
+        #{@working}   = #{@working}.substring(1);
+      }
+      else {
+        #{@matched} = nil;
+      }
+
+      return result;
+    }
+  end
+
+  def match?(pattern)
+    pattern = anchor(pattern)
+
+    %x{
+      var result = pattern.exec(#{@working});
+
+      if (result == null) {
+        return nil;
+      }
+      else {
+        #{@prev_pos} = #{@pos};
+
+        return result[0].length;
+      }
+    }
+  end
+
+  def pos=(pos)
+    %x{
+      if (pos < 0) {
+        pos += #{@string.length};
+      }
+    }
+
+    @pos     = pos
+    @working = `#{@string}.slice(pos)`
+  end
+
+  def matched_size
+    %x{
+      if (#{@matched} === nil) {
+        return nil;
+      }
+
+      return #{@matched}.length
+    }
+  end
+
+  def post_match
+    %x{
+      if (#{@matched} === nil) {
+        return nil;
+      }
+
+      return #{@string}.substr(#{@pos});
+    }
+  end
+
+  def pre_match
+    %x{
+      if (#{@matched} === nil) {
+        return nil;
+      }
+
+      return #{@string}.substr(0, #{@prev_pos});
+    }
+  end
+
+  def reset
+    @working = @string
+    @matched = nil
+    @pos     = 0
+  end
+
+  def rest
+    @working
+  end
+
+  def rest?
+    `#{@working}.length !== 0`
+  end
+
+  def rest_size
+    rest.size
+  end
+
+  def terminate
+    @match = nil
+    self.pos = @string.length
+  end
+
+  def unscan
+    @pos      = @prev_pos
+    @prev_pos = nil
+    @match    = nil
+
+    self
+  end
+
+  alias bol? beginning_of_line?
+  alias getch get_byte # not exactly the same, but for now...
+
+  private
+
+  def anchor(pattern)
+    %x{
+      var flags = pattern.toString().match(/\/([^\/]+)$/);
+      flags = flags ? flags[1] : undefined;
+      return new RegExp('^(?:' + pattern.source + ')', flags);
+    }
+  end
+end
diff --git a/stdlib/template.rb b/stdlib/template.rb
new file mode 100644
index 00000000..86d76fda
--- /dev/null
+++ b/stdlib/template.rb
@@ -0,0 +1,45 @@
+class Template
+  @_cache = {}
+  def self.[](name)
+    @_cache[name] || @_cache["templates/#{name}"]
+  end
+
+  def self.[]=(name, instance)
+    @_cache[name] = instance
+  end
+
+  def self.paths
+    @_cache.keys
+  end
+
+  attr_reader :body
+
+  def initialize(name, &body)
+    @name, @body = name, body
+    Template[name] = self
+  end
+
+  def inspect
+    "#<Template: '#{@name}'>"
+  end
+
+  def render(ctx = self)
+    ctx.instance_exec(OutputBuffer.new, &@body)
+  end
+
+  class OutputBuffer
+    def initialize
+      @buffer = []
+    end
+
+    def append(str)
+      @buffer << str
+    end
+
+    def join
+      @buffer.join
+    end
+
+    alias append= append
+  end
+end
diff --git a/stdlib/thread.rb b/stdlib/thread.rb
new file mode 100644
index 00000000..6561c6f3
--- /dev/null
+++ b/stdlib/thread.rb
@@ -0,0 +1,190 @@
+# This shim implementation of Thread is meant to only appease code that tries
+# to be safe in the presence of threads, but does not actually utilize them,
+# e.g., uses thread- or fiber-local variables.
+
+class ThreadError < StandardError
+end
+
+class Thread
+  def self.current
+    unless @current
+      @current = allocate
+      @current.core_initialize!
+    end
+
+    @current
+  end
+
+  def self.list
+    [current]
+  end
+
+  # Do not allow creation of new instances.
+  def initialize(*args)
+    raise NotImplementedError, 'Thread creation not available'
+  end
+
+  # fiber-local attribute access.
+  def [](key)
+    @fiber_locals[coerce_key_name(key)]
+  end
+
+  def []=(key, value)
+    @fiber_locals[coerce_key_name(key)] = value
+  end
+
+  def key?(key)
+    @fiber_locals.key?(coerce_key_name(key))
+  end
+
+  def keys
+    @fiber_locals.keys
+  end
+
+  # thread-local attribute access.
+  def thread_variable_get(key)
+    @thread_locals[coerce_key_name(key)]
+  end
+
+  def thread_variable_set(key, value)
+    @thread_locals[coerce_key_name(key)] = value
+  end
+
+  def thread_variable?(key)
+    @thread_locals.key?(coerce_key_name(key))
+  end
+
+  def thread_variables
+    @thread_locals.keys
+  end
+
+  private
+
+  def core_initialize!
+    @thread_locals = {}
+    @fiber_locals  = {}
+  end
+
+  def coerce_key_name(key)
+    ::Opal.coerce_to!(key, String, :to_s)
+  end
+
+  class Queue
+    def initialize
+      clear
+    end
+
+    def clear
+      @storage = []
+    end
+
+    def empty?
+      @storage.empty?
+    end
+
+    def size
+      @storage.size
+    end
+
+    def pop(non_block = false)
+      if empty?
+        raise ThreadError, 'Queue empty' if non_block
+        raise ThreadError, 'Deadlock'
+      end
+
+      @storage.shift
+    end
+
+    def push(value)
+      @storage.push(value)
+    end
+
+    def each(&block)
+      @storage.each(&block)
+    end
+
+    alias << push
+    alias deq pop
+    alias enq push
+    alias length size
+    alias shift pop
+  end
+
+  class Backtrace
+    class Location
+      def initialize(str)
+        @str = str
+
+        str =~ /^(.*?):(\d+):(\d+):in `(.*?)'$/
+        @path = Regexp.last_match(1)
+        @label = Regexp.last_match(4)
+        @lineno = Regexp.last_match(2).to_i
+
+        @label =~ /(\w+)$/
+        @base_label = Regexp.last_match(1) || @label
+      end
+
+      def to_s
+        @str
+      end
+
+      def inspect
+        @str.inspect
+      end
+
+      attr_reader :base_label, :label, :lineno, :path
+
+      # TODO: Make it somehow provide the absolute path.
+      alias absolute_path path
+    end
+  end
+end
+
+Queue = Thread::Queue
+
+class Mutex
+  def initialize
+    # We still keep the @locked state so any logic based on try_lock while
+    # held yields reasonable results.
+    @locked = false
+  end
+
+  def lock
+    raise ThreadError, 'Deadlock' if @locked
+    @locked = true
+    self
+  end
+
+  def locked?
+    @locked
+  end
+
+  def owned?
+    # Being the only "thread", we implicitly own any locked mutex.
+    @locked
+  end
+
+  def try_lock
+    if locked?
+      false
+    else
+      lock
+      true
+    end
+  end
+
+  def unlock
+    raise ThreadError, 'Mutex not locked' unless @locked
+    @locked = false
+    self
+  end
+
+  def synchronize
+    lock
+    begin
+      yield
+    ensure
+      unlock
+    end
+  end
+end
diff --git a/stdlib/time.rb b/stdlib/time.rb
new file mode 100644
index 00000000..8c689d12
--- /dev/null
+++ b/stdlib/time.rb
@@ -0,0 +1,46 @@
+class Time
+  def self.parse(str)
+    `new Date(Date.parse(str))`
+  end
+
+  def self.def_formatter(name, format, on_utc: false, utc_tz: nil, tz_format: nil, fractions: false, on: self)
+    on.define_method name do |fdigits = 0|
+      case self
+      when defined?(::DateTime) && ::DateTime
+        date = on_utc ? new_offset(0) : self
+      when defined?(::Date) && ::Date
+        date = ::Time.utc(year, month, day)
+      when ::Time
+        date = on_utc ? getutc : self
+      end
+      str = date.strftime(format)
+      str += date.strftime(".%#{fdigits}N") if fractions && fdigits > 0
+      if utc_tz
+        str += utc ? utc_tz : date.strftime(tz_format)
+      elsif tz_format
+        str += date.strftime(tz_format)
+      end
+      str
+    end
+  end
+
+  def_formatter :rfc2822, '%a, %d %b %Y %T ', utc_tz: '-00:00', tz_format: '%z'
+  alias rfc822 rfc2822
+  def_formatter :httpdate, '%a, %d %b %Y %T GMT', on_utc: true
+  def_formatter :xmlschema, '%FT%T', utc_tz: 'Z', tz_format: '%:z', fractions: true
+  alias iso8601 xmlschema
+
+  def to_date
+    Date.wrap(self)
+  end
+
+  def to_datetime
+    DateTime.wrap(self)
+  end
+
+  def to_time
+    self
+  end
+end
+
+require 'date'
diff --git a/stdlib/uri.rb b/stdlib/uri.rb
new file mode 100644
index 00000000..c9983a1b
--- /dev/null
+++ b/stdlib/uri.rb
@@ -0,0 +1,53 @@
+# frozen_string_literal: true
+
+module URI
+  def self.decode_www_form(str, enc = undefined, separator: '&', use__charset_: false, isindex: false)
+    raise ArgumentError, "the input of #{name}.#{__method__} must be ASCII only string" unless str.ascii_only?
+
+    %x{
+      var ary = [], key, val;
+      if (str.length == 0)
+        return ary;
+      if (enc)
+        #{enc = Encoding.find(enc)};
+
+      var parts = str.split(#{separator});
+      for (var i = 0; i < parts.length; i++) {
+        var string = parts[i];
+        var splitIndex = string.indexOf('=')
+
+        if (splitIndex >= 0) {
+          key = string.substr(0, splitIndex);
+          val = string.substr(splitIndex + 1);
+        } else {
+          key = string;
+          val = '';
+        }
+
+        if (isindex) {
+          if (splitIndex < 0) {
+            key = '';
+            val = string;
+          }
+          isindex = false;
+        }
+
+        key = decodeURIComponent(key.replace(/\+/g, ' '));
+        if (val) {
+          val = decodeURIComponent(val.replace(/\+/g, ' '));
+        } else {
+          val = '';
+        }
+
+        if (enc) {
+          key = #{`key`.force_encoding(enc)}
+          val = #{`val`.force_encoding(enc)}
+        }
+
+        ary.push([key, val]);
+      }
+
+      return ary;
+    }
+  end
+end
diff --git a/stdlib/yaml.rb b/stdlib/yaml.rb
new file mode 100644
index 00000000..4d056199
--- /dev/null
+++ b/stdlib/yaml.rb
@@ -0,0 +1 @@
+warn "REMOVED: use `require 'nodejs/yaml'` instead"
diff --git a/tasks/benchmarking.rake b/tasks/benchmarking.rake
new file mode 100644
index 00000000..ba1e0716
--- /dev/null
+++ b/tasks/benchmarking.rake
@@ -0,0 +1,113 @@
+namespace :bench do
+  directory "tmp/bench"
+
+  report_file_for = -> name {
+    index = Dir['tmp/bench/*'].map{|f| File.basename(f).to_i}.sort.last.to_i + 1
+    "tmp/bench/#{index}_#{name.gsub('.', '-')}.txt"
+  }
+
+  desc "Benchmark Opal"
+  task :opal => "tmp/bench" do |t, args|
+    require 'opal/version'
+    files = Array(args[:files]) + args.extras
+    report = report_file_for["opal-#{Opal::VERSION}"]
+    sh "bundle exec opal benchmark/run.rb #{files.join(" ")} | tee #{report}"
+  end
+
+  desc "Benchmark Ruby"
+  task :ruby => "tmp/bench" do |t, args|
+    files = Array(args[:files]) + args.extras
+    report = report_file_for["ruby-#{RUBY_VERSION}"]
+    sh "bundle exec ruby benchmark/run.rb #{files.join(" ")} | tee #{report}"
+  end
+
+  desc "Delete all benchmark results"
+  task :clear do
+    sh "rm tmp/bench/*"
+  end
+
+  desc "Combined report of all benchmark results"
+  task :report do |t, args|
+    files = Array(args[:files]) + args.extras
+    if files.empty?
+      files = Dir["tmp/bench/*"]
+    else
+      files = files.map{|file| "tmp/bench/#{ file }"}
+    end
+    reports = []
+    benchmark_names = []
+
+    files.each do |file|
+      report_name = File.basename(file, File.extname(file))
+      report_results = {}
+      File.read(file).each_line do |line|
+        benchmark_name, benchmark_result = line.split(" ")
+        report_results[benchmark_name] = benchmark_result
+        benchmark_names << benchmark_name
+      end
+      reports << [report_name, report_results]
+    end
+
+    benchmark_names.uniq!
+
+    header = ["Benchmark"]
+    reports.each do |report_name, _|
+      header << (report_name+' | ')
+    end
+
+    base_report_name, base_report_results = reports.to_a.first
+    puts "Base: #{base_report_name}"
+
+    table = [header]
+    result_rows = []
+    benchmark_names.each do |benchmark_name|
+      row = [benchmark_name]
+      reports.each do |report_name, report_results|
+        results_string = ""
+
+        if report_results[benchmark_name]
+          sec = report_results[benchmark_name].to_f
+
+          if report_name != base_report_name && base_report_results[benchmark_name]
+            base_sec = base_report_results[benchmark_name].to_f
+            delta_percent = -((1 - sec/base_sec)*100)
+            results_string << format("%+0.2f%%", delta_percent).rjust(10).ljust(12)
+          else
+            results_string << (" "*14)
+          end
+
+          results_string << format("%0.3fms", sec).rjust(9)
+        end
+        results_string << ' | '
+        row << results_string
+      end
+      result_rows << row
+    end
+
+    table += result_rows.sort_by{|row| row[2].scan(/([\+|\-]\d+\.\d+)%/).flatten.first.to_f}
+
+    fmt = ""
+    table.transpose.each_with_index do |column, index|
+      column_width = column.max_by{|string| string.length}.length
+      if index.zero?
+        fmt << "%-#{ column_width }s"
+      else
+        fmt << "  %#{ column_width }s"
+      end
+    end
+    fmt << "\n"
+
+    table.each do |row|
+      printf fmt, *row
+    end
+  end
+
+  task :ips do
+    files = Dir[ENV['FILE'] || "#{__dir__}/../benchmark-ips/bm_*.rb"]
+    raise ArgumentError, "no files provided" if files.empty?
+    puts "=== Files: #{files.join ', '}"
+    files.each do |bm_path|
+      sh "bundle exec opal --dynamic-require ignore --missing-require ignore -ropal/platform -gbenchmark-ips -rbenchmark/ips -A #{bm_path}"
+    end
+  end
+end
diff --git a/tasks/building.rake b/tasks/building.rake
new file mode 100644
index 00000000..21e469ea
--- /dev/null
+++ b/tasks/building.rake
@@ -0,0 +1,65 @@
+require 'opal/version'
+
+desc <<-DESC
+Build *corelib* and *stdlib* to "build/"
+
+You can restrict the file list with the FILES env var (comma separated)
+and the destination dir with the DIR env var, FORMATS to select output formats.
+
+Example: rake dist DIR=/tmp/foo FILES='opal.rb,base64.rb'
+Example: rake dist DIR=cdn/opal/#{Opal::VERSION}
+Example: rake dist DIR=cdn/opal/master
+Example: rake dist DIR=cdn/opal/master FORMATS=js,min,gz
+Example: rake dist DIR=cdn/opal/master FORMATS=js,map
+DESC
+task :dist do
+  require 'opal/util'
+  require 'opal/config'
+
+  Opal::Config.arity_check_enabled = false
+  Opal::Config.const_missing_enabled = false
+  Opal::Config.dynamic_require_severity = :warning
+  Opal::Config.missing_require_severity = :error
+
+  build_dir = ENV['DIR'] || 'build'
+  files     = ENV['FILES'] ? ENV['FILES'].split(',') :
+              Dir['{opal,stdlib}/*.rb'].map { |lib| File.basename(lib, '.rb') }
+  formats = (ENV['FORMATS'] || 'js,min,gz').split(',')
+
+  mkdir_p build_dir unless File.directory? build_dir
+  width = files.map(&:size).max
+
+  files.map do |lib|
+    Thread.new {
+      log = ''
+      log << "* building #{lib}...".ljust(width+'* building ... '.size)
+      $stdout.flush
+
+      # Set requirable to true, unless building opal. This allows opal to be auto-loaded.
+      requirable = (lib != 'opal')
+      builder = Opal::Builder.build(lib, requirable: requirable)
+
+      src = builder.to_s if (formats & %w[js min gz]).any?
+      src << ";" << builder.source_map.to_data_uri_comment if (formats & %w[map]).any?
+      min = Opal::Util.uglify src if (formats & %w[min gz]).any?
+      gzp = Opal::Util.gzip min if (formats & %w[gz]).any?
+
+      File.open("#{build_dir}/#{lib}.js", 'w+')        { |f| f << src }
+      File.open("#{build_dir}/#{lib}.min.js", 'w+')    { |f| f << min } if min
+      File.open("#{build_dir}/#{lib}.min.js.gz", 'w+') { |f| f << gzp } if gzp
+
+      log << "done. ("
+      log << "development: #{('%.2f' % (src.size/1000.0)).rjust(7)}KB"
+      log <<  ", minified: #{('%.2f' % (min.size/1000.0)).rjust(7)}KB" if min
+      log <<   ", gzipped: #{('%.2f' % (gzp.size/1000.0)).rjust(7)}KB" if gzp
+      log << ")."
+      log
+    }
+  end.map(&:value).map(&method(:puts))
+end
+
+desc 'Remove any generated file.'
+task :clobber do
+  rm_r './build'
+end
+
diff --git a/tasks/github.rake b/tasks/github.rake
new file mode 100644
index 00000000..ccc6a142
--- /dev/null
+++ b/tasks/github.rake
@@ -0,0 +1,19 @@
+namespace :github do
+  desc "Upload assets to github"
+  task :upload_assets do
+    require 'octokit'
+    # https://github.com/octokit/octokit.rb#oauth-access-tokens
+    token_path = '.github_access_token'
+    File.exist?(token_path) or raise ArgumentError, "Please create a personal access token (https://github.com/settings/tokens/new) and paste it inside #{token_path.inspect}"
+    token = File.read(token_path).strip
+    client = Octokit::Client.new :access_token => token
+    tag_name = ENV['TAG'] || raise(ArgumentError, 'missing the TAG env variable (e.g. TAG=v0.4.4)')
+    release = client.releases('opal/opal').find{|r| p(r.id); p(r).tag_name == tag_name}
+    release_url = "https://api.github.com/repos/opal/opal/releases/#{release.id}"
+    %w[opal opal-parser].each do |name|
+      client.upload_asset release_url, "build/#{name}.js", :content_type => 'application/x-javascript'
+      client.upload_asset release_url, "build/#{name}.min.js", :content_type => 'application/x-javascript'
+      client.upload_asset release_url, "build/#{name}.min.js.gz", :content_type => 'application/octet-stream'
+    end
+  end
+end
diff --git a/tasks/linting-parse-eslint-results.js b/tasks/linting-parse-eslint-results.js
new file mode 100644
index 00000000..5e5455a0
--- /dev/null
+++ b/tasks/linting-parse-eslint-results.js
@@ -0,0 +1,40 @@
+const SourceMapConsumer = require('source-map').SourceMapConsumer
+const path = require('path')
+const fs = require('fs')
+const root = `${__dirname}/..`
+const results = JSON.parse(fs.readFileSync(`${root}/tmp/lint/result.json`, 'utf8'))
+const bufferFrom = require('buffer-from');
+const puts = (string = '') => process.stdout.write(`${string}\n`)
+const retrieveSourceMapURL = (fileData) => {
+  var re = /(?:\/\/[@#][\s]*sourceMappingURL=([^\s'"]+)[\s]*$)|(?:\/\*[@#][\s]*sourceMappingURL=([^\s*'"]+)[\s]*(?:\*\/)[\s]*$)/mg;
+  var matches = fileData.match(re);
+  return matches[matches.length - 1];
+}
+
+let count = 0
+
+results.forEach(
+  ({filePath, messages}) => {
+    if (messages.length === 0) {return}
+
+    const sourceMappingURL = retrieveSourceMapURL(fs.readFileSync(filePath, 'utf8'))
+    const rawData = sourceMappingURL.split(',', 2)[1]
+    const sourceMapData = bufferFrom(rawData, "base64").toString();
+    const consumer = new SourceMapConsumer(sourceMapData);
+
+    messages.forEach((error) => {
+      const original = consumer.originalPositionFor({ line: error.line, column: error.column })
+      count++
+
+      puts()
+      puts(`* ${error.message}`)
+      if (error.ruleId) puts(`  - Read more: https://eslint.org/docs/rules/${error.ruleId}`)
+      ;(error.suggestions || []).forEach((suggestion) => puts(`  - Suggestion: ${suggestion.desc}`))
+      puts(`  - Compiled: ${path.relative(root, filePath)}:${error.line}:${error.column}`)
+      puts(`  - Original: ${original.source}:${original.line}:${original.column}`)
+    })
+  }
+)
+
+puts(`\nFailed with ${count} error${count === 1 ? '' : 's'}.`)
+process.exit(count || 1)
diff --git a/tasks/linting.rake b/tasks/linting.rake
new file mode 100644
index 00000000..8b35a31a
--- /dev/null
+++ b/tasks/linting.rake
@@ -0,0 +1,42 @@
+import 'tasks/building.rake'
+
+
+namespace :lint do
+  desc "Build *corelib* and *stdlib* and lint the result"
+  task :eslint do
+    require 'json'
+    require 'pathname'
+
+    result_path = "tmp/lint/result.json"
+    dir = ENV['DIR'] ||= 'tmp/lint'
+    ENV['FORMATS'] = 'js,map'
+    rm_rf dir if File.exist? dir
+
+    Rake::Task[:dist].invoke
+
+    files = Dir["#{dir}/*.js"]
+    es8, es3 = files.partition { |i| i.include? "await" }
+
+    [es3, es8].each do |files|
+      config = (files == es8) ? ["-c", __dir__+"/../.eslintrc.await.js"] : []
+
+      sh "yarn", "run", "eslint", *config, *files, "--format", "json", "--output-file", result_path do |ok, _|
+        if ok
+          puts "Successful."
+        else
+          sh 'node tasks/linting-parse-eslint-results.js'
+        end
+      end
+    end
+  end
+end
+
+require 'rubocop/rake_task'
+desc 'Run RuboCop on lib/, opal/ and stdlib/ directories'
+RuboCop::RakeTask.new('lint:rubocop') do |task|
+  task.options << '--extra-details'
+  task.options << '--display-style-guide'
+  task.options << '--parallel'
+end
+
+task :lint => %w[lint:eslint lint:rubocop]
diff --git a/tasks/performance.rake b/tasks/performance.rake
new file mode 100644
index 00000000..4f7c6ec1
--- /dev/null
+++ b/tasks/performance.rake
@@ -0,0 +1,187 @@
+# A set of tasks to track performance regressions by the CI
+
+require 'opal/util'
+
+class Timing
+  def initialize(tries: 31, &block)
+    @tries = tries
+    @times = tries.times.map do
+      t = now
+      block.()
+      (now - t)
+    end.sort
+  end
+
+  def now
+    Process.clock_gettime Process::CLOCK_MONOTONIC, :float_microsecond
+  end
+
+  attr_reader :times, :tries
+
+  # Runs a block N times and returns a mean number of seconds it took to run it.
+  def mean_time
+    @times.sort[tries/2.0.floor + 1]
+  end
+
+  def error
+    m = mean_time
+    @times.minmax.map { |t| (m - t).abs }.max
+  end
+
+  def compare_to(previous, name)
+    current = self
+    percent = ->(a, b) { (a / b) * 100 }
+    change = percent[(current.mean_time - previous.mean_time), previous.mean_time]
+
+    puts ("%30s: %.3f (±%.2f%%) -> %.3f (±%.2f%%) (change: %+.2f%%)" % [
+      name,
+      previous.mean_time / 1_000_000.0, percent[previous.error, previous.mean_time],
+      current.mean_time / 1_000_000.0, percent[current.error, current.mean_time],
+      change
+    ]).gsub('.000','')
+
+    $failures << "#{name} increased by more than 5%" if change > 5.0
+  end
+end
+
+class Size
+  def initialize(size)
+    @size = size
+  end
+
+  attr_reader :size
+
+  def compare_to(previous, name)
+    change = 100 * (previous.size - size) / previous.size
+    puts ("%30s: %5.2f kB -> %5.2f kB (change: %+.2f%%)" % [
+      name,
+      previous.size / 1_000.0,
+      size / 1_000.0,
+      change,
+    ])
+
+    $failures << "#{name} increased by more than 5%" if change > 5.0
+  end
+end
+
+$failures = []
+
+ASCIIDOCTOR_REPO_BASE = ENV['ASCIIDOCTOR_REPO_BASE'] || 'https://github.com/asciidoctor'
+
+# Selected asciidoctor versions were working on Aug 19 2021, feel free to update.
+ASCIIDOCTOR_PREPARE = [
+  "bundle",
+  "exec",
+  "bash",
+  "-c",
+  <<~BASH
+    mkdir -p tmp/performance
+    pushd tmp/performance
+    git clone #{ASCIIDOCTOR_REPO_BASE}/asciidoctor >/dev/null 2>&1
+    pushd asciidoctor; git checkout 869e8236 >/dev/null 2>&1; popd
+    git clone #{ASCIIDOCTOR_REPO_BASE}/asciidoctor.js >/dev/null 2>&1
+    pushd asciidoctor.js; git checkout 053fa0d3 >/dev/null 2>&1; popd
+    erb ../../tasks/performance/asciidoctor_test.rb.erb > asciidoctor_test.rb
+    popd
+  BASH
+]
+
+ASCIIDOCTOR_BUILD_OPAL = "bin/opal --no-cache -c " \
+           "-Itmp/performance/asciidoctor/lib " \
+           "-Itmp/performance/asciidoctor.js/packages/core/lib " \
+           "-sconcurrent/map -sslim/include " \
+           "tmp/performance/asciidoctor_test.rb > tmp/performance/asciidoctor_test.js"
+ASCIIDOCTOR_RUN_RUBY = "bundle exec ruby -Itmp/performance/asciidoctor/lib tmp/performance/asciidoctor_test.rb"
+ASCIIDOCTOR_RUN_OPAL = "node tmp/performance/asciidoctor_test.js"
+
+# Generate V8 function optimization status report for corelib methods
+NODE_OPTSTATUS = "env NODE_OPTS=--allow-natives-syntax bin/opal tasks/performance/optimization_status.rb"
+
+performance_stat = ->(name) {
+  stat = {}
+
+  # Run on current
+  puts "\n* Checking optimization status with #{name}..."
+  sh("#{NODE_OPTSTATUS} > tmp/performance/optstatus_#{name}")
+
+  puts "\n* Building AsciiDoctor with #{name}..."
+  stat[:compiler_time] = Timing.new(tries: 7) { sh(ASCIIDOCTOR_BUILD_OPAL) }
+
+  puts "\n* Running AsciiDoctor with #{name}..."
+  stat[:run_time] = Timing.new { sh("#{ASCIIDOCTOR_RUN_OPAL} > tmp/performance/opal_result_#{name}.html") }
+  stat[:correct] = File.read("tmp/performance/opal_result_#{name}.html") == File.read("tmp/performance/ruby_result.html")
+  stat[:size] = Size.new File.size("tmp/performance/asciidoctor_test.js")
+
+  puts "\n* Minifying AsciiDoctor with #{name}..."
+  source = File.read("tmp/performance/asciidoctor_test.js")
+  stat[:min_size] = Size.new Opal::Util.uglify(source).bytesize rescue Float::INFINITY
+  stat[:min_size_m] = Size.new Opal::Util.uglify(source, mangle: true).bytesize rescue Float::INFINITY
+
+  stat
+}
+
+namespace :performance do
+  task :compare do
+    this_ref = `git describe --tags`.chomp
+    ref = 'master'
+    ref = ENV['GITHUB_BASE_REF'] if ENV['GITHUB_BASE_REF'] && !ENV['GITHUB_BASE_REF'].empty?
+
+    # Prepare
+    puts "\n* Preparing asciidoctor..."
+    sh(*ASCIIDOCTOR_PREPARE)
+
+    puts "\n* Running AsciiDoctor with CRuby..."
+    sh("#{ASCIIDOCTOR_RUN_RUBY} > tmp/performance/ruby_result.html")
+
+    current = performance_stat.(:current)
+
+    # Prepare previous
+    sh("git checkout --recurse-submodules #{ref} && bundle install >/dev/null 2>&1")
+
+    previous = performance_stat.(:previous)
+
+    # Restore current
+    sh("git checkout --recurse-submodules - && bundle install >/dev/null 2>&1")
+
+    # Summary
+    puts "\n=== Summary ==="
+    puts "Summary of performance changes between (previous) #{ref} and (current) #{this_ref}:"
+
+    diff = `diff --report-identical-files -F '^Class' -Naur tmp/performance/optstatus_previous tmp/performance/optstatus_current`
+    diff_lines = diff.split("\n")
+
+    puts
+    puts "Comparison of V8 function optimization status:"
+    puts diff
+
+    if diff_lines.grep(/^-\s+\[COMPILED\]/).count > 0
+      failure.("Some methods are no longer compiled on V8")
+    end
+
+    puts
+    puts "Comparison of the Asciidoctor (a real-life Opal application) compile and run:"
+
+    failure.("Wrong result on the current branch") unless current[:correct]
+    failure.("Wrong result on the previous branch - ignore it") unless previous[:correct]
+
+    current[:compiler_time].compare_to(previous[:compiler_time], "Compile time")
+    current[:run_time     ].compare_to(previous[:run_time     ], "Run time")
+    current[:size         ].compare_to(previous[:size         ], "Bundle size")
+    current[:min_size     ].compare_to(previous[:min_size     ], "Minified bundle size")
+    current[:min_size_m   ].compare_to(previous[:min_size_m   ], "Mangled & minified")
+
+    if $failures.any?
+      puts "--- Failures ---"
+      $failures.each do |f|
+        puts " - #{f}"
+      end
+      puts
+      puts "This run failed - some performance checks did not pass. Don't worry, this is"
+      puts "informative, not fatal. It may be worth to rerun the task, rebase the branch,"
+      puts "or consult those results with a pull request reviewer."
+      fail
+    end
+  end
+end
+
+task :performance => ['performance:compare']
diff --git a/tasks/performance/asciidoctor_test.rb.erb b/tasks/performance/asciidoctor_test.rb.erb
new file mode 100644
index 00000000..ff59ed74
--- /dev/null
+++ b/tasks/performance/asciidoctor_test.rb.erb
@@ -0,0 +1,8 @@
+JAVASCRIPT_IO_MODULE="nodejs" if RUBY_ENGINE == 'opal'
+require "asciidoctor"
+data = DATA.read
+100.times { Asciidoctor.convert(data) }
+puts Asciidoctor.convert(data)
+
+__END__
+<%= File.read('asciidoctor/benchmark/sample-data/mdbasics.adoc') %>
diff --git a/tasks/performance/optimization_status.rb b/tasks/performance/optimization_status.rb
new file mode 100755
index 00000000..51f0a482
--- /dev/null
+++ b/tasks/performance/optimization_status.rb
@@ -0,0 +1,77 @@
+klasses = [
+  Array,
+  Class,
+  # Complex,
+  # Dir,
+  Enumerable,
+  Enumerator,
+  Exception,
+  Hash,
+  # Kernel,
+  Math,
+  Method,
+  Module,
+  Object,
+  Proc,
+  Range,
+  Rational,
+  Regexp,
+  Struct,
+  String,
+  Time
+]
+
+%x{
+  function getOptimizationStatus(fn) {
+    var optstatus = %GetOptimizationStatus(fn);
+
+    return (optstatus & (1 << 6)) ? "[INTERPRETED]" : "[COMPILED]";
+  }
+  
+  function triggerOptAndGetStatus(fn) {
+    // using try/catch to avoid having to call functions properly
+    try {
+      // Fill type-info
+      fn();
+      // 2 calls are needed to go from uninitialized -> pre-monomorphic -> monomorphic
+      fn();
+    }
+    catch (e) {}
+    %OptimizeFunctionOnNextCall(fn);
+    try {
+      fn();
+    }
+    catch (e) {}
+    return getOptimizationStatus(fn);
+  }
+}
+
+optimization_status = Hash[klasses.map do |klass|
+  methods = klass.instance_methods
+  methods -= Object.instance_methods unless klass == Object
+  methods -= [:product, :exit, :exit!, :at_exit]
+  opt_status = Hash[methods.map do |method|
+    method_func = `#{klass.instance_method(method)}.method`
+    [method, `triggerOptAndGetStatus(#{method_func})`]
+  end]
+  by_status_grouped = opt_status.group_by {|method, status| status }
+  as_hash = Hash[by_status_grouped.map do |status, stuff|
+    list = stuff.map {|val| val[0]}
+    [status, list]
+  end]
+  [klass, as_hash]
+end]
+
+puts '----Report----'
+optimization_status.sort_by {|klass,_| klass.name}.each do |klass, statuses|
+  puts "---------------"
+  puts "Class #{klass}:"
+  puts "---------------"
+  statuses.sort_by {|stat,_| stat }.each do |status, methods|
+    methods.sort.each do |m|
+      puts "  #{status} #{m}"
+    end
+  end
+end
+
+puts 'done!'
\ No newline at end of file
diff --git a/tasks/releasing.rake b/tasks/releasing.rake
new file mode 100644
index 00000000..3520cac6
--- /dev/null
+++ b/tasks/releasing.rake
@@ -0,0 +1,81 @@
+# frozen_string_literal: true
+
+require 'bundler'
+Bundler.require
+Bundler::GemHelper.install_tasks
+
+github_releases = -> do
+  require 'date'
+  require 'octokit'
+  Octokit.auto_paginate = true
+
+  Octokit.releases('opal/opal').sort_by do |r|
+    Gem::Version.new(r[:tag_name][1..-1])
+  end.select do |release|
+    release[:tag_name] =~ /^v(\d+)(\.\d+)*$/
+  end
+end
+
+expand_pull_request_links = -> string {
+  string.gsub(/\(#(\d+)\)/, '([#\1](https://github.com/opal/opal/pull/\1))')
+}
+
+changelog_entry = -> (
+  tag_name:,
+  release_date:,
+  previous_tag_name:,
+  body:
+) do
+  compare_url = "https://github.com/opal/opal/compare/#{previous_tag_name}...#{tag_name}"
+  version_name = tag_name == 'HEAD' ? 'Unreleased' : tag_name.sub(/^v/, '')
+  [
+    "## [#{version_name}](#{compare_url}) - #{release_date}\n\n\n",
+    expand_pull_request_links[body.gsub("\r\n", "\n").strip],
+  ].join('')
+end
+
+CHANGELOG_HEADING = <<~MARKDOWN
+  # Change Log
+
+  All notable changes to this project will be documented in this file.
+  This project *tries* to adhere to [Semantic Versioning](http://semver.org/), even before v1.0.
+
+  Changes are grouped as follows:
+  - **Added** for new features.
+  - **Changed** for changes in existing functionality.
+  - **Deprecated** for once-stable features removed in upcoming releases.
+  - **Removed** for deprecated features removed in this release.
+  - **Fixed** for any bug fixes.
+  - **Security** to invite users to upgrade in case of vulnerabilities.
+MARKDOWN
+
+desc "Update CHANGELOG.md using info from published GitHub releases (the first unreleased section is preserved)"
+task :changelog do
+  changelog_path    = "#{__dir__}/../CHANGELOG.md"
+  unreleased_path   = "#{__dir__}/../UNRELEASED.md"
+  changelog_entries = []
+  previous_tag_name = '000000'
+
+  github_releases.call.each do |release|
+    changelog_entries.unshift changelog_entry.call(
+      tag_name: release[:tag_name],
+      release_date: release[:created_at].to_date.iso8601, # YYYY-MM-DD
+      previous_tag_name: previous_tag_name,
+      body: release[:body],
+    )
+    previous_tag_name = release[:tag_name]
+  end
+
+  changelog_entries.unshift changelog_entry.call(
+    tag_name: ENV['VERSION'] || 'HEAD',
+    release_date: (ENV['VERSION'] ? Time.now.to_date.iso8601 : 'unreleased'),
+    previous_tag_name: previous_tag_name,
+    body: File.read(unreleased_path),
+  )
+
+  changelog_entries.unshift CHANGELOG_HEADING
+
+  changelog_entries << nil # for the final newlines
+
+  File.write changelog_path, changelog_entries.join("\n\n\n\n\n")
+end
diff --git a/tasks/testing.rake b/tasks/testing.rake
new file mode 100644
index 00000000..a70784e7
--- /dev/null
+++ b/tasks/testing.rake
@@ -0,0 +1,496 @@
+require 'rspec/core/rake_task'
+RSpec::Core::RakeTask.new(:rspec) do |t|
+  t.pattern = 'spec/lib/**/*_spec.rb'
+end
+
+if ENV.key?('RUBYSPEC')
+  warn "Did you mean RUBYSPECS=...? (RUBYSPEC was found among ENV variables)"
+  exit 1
+end
+
+module Testing
+  extend self
+
+  def get_random_seed(env)
+    random_seed = env['RANDOM_SEED'] ? env['RANDOM_SEED'] : rand(100_000)
+    puts "export RANDOM_SEED=#{random_seed} # to re-use the same randomization"
+    random_seed
+  end
+
+  module MSpec
+    extend self
+
+    def stubs
+      %w[
+        mspec/helpers/tmp
+        mspec/helpers/environment
+        mspec/guards/block_device
+        a_file
+        lib/spec_helper
+        mspec/commands/mspec-run
+        etc
+        rubygems
+      ]
+    end
+
+    def specs(env = ENV)
+      suite = env['SUITE']
+      pattern = env['PATTERN']
+      whitelist_pattern = !!env['RUBYSPECS']
+      env['OPAL_PLATFORM_NAME'] = RbConfig::CONFIG['host_os'] unless env['OPAL_PLATFORM_NAME']
+
+      excepting = []
+      rubyspecs = File.read('spec/ruby_specs').lines.reject do |l|
+        l.strip!
+        l.start_with?('#') || l.empty? || (l.start_with?('!') && excepting.push(l.sub('!', 'spec/') + '.rb'))
+      end.flat_map do |path|
+        path = "spec/#{path}"
+        File.directory?(path) ? Dir[path+'/*.rb'] : "#{path}.rb"
+      end - excepting
+
+      opalspecs = Dir['spec/{opal,lib/parser}/**/*_spec.rb']
+      userspecs = Dir[pattern] if pattern
+      userspecs &= rubyspecs if whitelist_pattern
+
+      specs = []
+      add_specs = ->(name, new_specs) do
+        puts "Adding #{new_specs.size.to_s.rjust(3)} files (#{name})"
+        specs += new_specs
+      end
+
+      if pattern
+        add_specs["PATTERN=#{pattern}", userspecs.sort]
+      elsif suite == 'opal'
+        add_specs['spec/opal', opalspecs.sort]
+      elsif suite == 'ruby'
+        add_specs['spec/ruby', rubyspecs.sort]
+      else
+        warn 'Please provide at lease one of the following environment variables:'
+        warn 'PATTERN # e.g. PATTERN=spec/ruby/core/numeric/**_spec.rb'
+        warn 'SUITE   # can be either SUITE=opal or SUITE=ruby'
+        exit 1
+      end
+
+      specs
+    end
+
+    def filters(suite)
+      opalspec_filters = Dir['spec/filters/**/*_opal.rb']
+
+      if ENV['INVERT_RUNNING_MODE']
+        # When we run an inverted test suite we should run only 'bugs'.
+        # Unsupported features are not supported anyway
+        rubyspec_filters = Dir['spec/filters/bugs/*.rb'] - opalspec_filters
+      else
+        rubyspec_filters = Dir['spec/filters/**/*.rb'] - opalspec_filters
+      end
+
+      suite == 'opal' ? opalspec_filters : rubyspec_filters
+    end
+
+    def write_file(filename, filters, specs, env)
+      bm_filepath = env['BM_FILEPATH']
+
+      [filters, specs].each do |files|
+        files.map! { |s| "'#{s.sub(/^spec\//,'')}'" }
+      end
+
+      filter_requires = filters.map { |s| "require #{s}" }.join("\n")
+      spec_requires = specs.map { |s| "requirable_spec_file #{s}" }.join("\n")
+      spec_registration = specs.join(",\n  ")
+
+      if bm_filepath
+        enter_benchmarking_mode = "OpalBM.main.register(#{Integer(env['BM'])}, '#{bm_filepath}')"
+      end
+
+      random_seed = Testing.get_random_seed(env)
+
+      env_data = env.map{ |k,v| "ENV[#{k.inspect}] = #{v.to_s.inspect}" unless v.nil? }.join("\n")
+
+      File.write filename, <<~RUBY
+        require 'opal/platform' # in node ENV is replaced
+        #{env_data}
+
+        require 'spec_helper'
+        require 'opal/full'
+        require 'securerandom'
+        #{enter_benchmarking_mode}
+
+        #{filter_requires}
+
+        #{spec_requires}
+
+        MSpec.register_files [
+          #{spec_registration}
+        ]
+
+        srand(#{random_seed})
+        MSpec.randomize = true
+
+        # legacy MSpec
+        def frozen_error_class
+          FrozenError
+        end
+
+        MSpec.process
+        OSpecFilter.main.unused_filters_message(list: #{!!ENV['LIST_UNUSED_FILTERS']})
+        exit MSpec.exit_code
+      RUBY
+    end
+
+    def bm_filepath
+      mkdir_p 'tmp/bench'
+      index = 0
+      begin
+        index += 1
+        filepath = "tmp/bench/Spec#{index}"
+      end while File.exist?(filepath)
+      filepath
+    end
+  end
+
+  module Minitest
+    extend self
+    extend FileUtils
+
+    def write_file(filename, files = [], env = {})
+      env_data = env.map{ |k,v| "ENV[#{k.inspect}] = #{v.to_s.inspect}" unless v.nil? }.join("\n")
+      requires = files.map{|f| "require '#{f}'"}
+      mkdir_p File.dirname(filename)
+
+      random_seed = Testing.get_random_seed(env)
+
+      File.write filename, <<-RUBY
+        require 'opal/platform' # in node ENV is replaced
+        require 'opal-parser'
+        #{env_data}
+        srand(#{random_seed})
+
+        #{requires.join("\n")}
+      RUBY
+    end
+  end
+
+  class SauceLabs
+    include FileUtils
+
+    def initialize(options = {})
+      @host = options.fetch(:host, '127.0.0.1')
+      @port = options.fetch(:port, '3000')
+      @username = options.fetch(:username)
+      @access_key = options.fetch(:access_key)
+      @tunnel = options.fetch(:tunnel, nil)
+    end
+    attr_reader :host, :port, :username, :access_key, :tunnel
+
+    def with_server
+      cd 'examples/rack'
+      system 'bundle install' or raise 'bundle install failed'
+      begin
+        server = Process.spawn "bundle exec rackup --host #{host} --port #{port}"
+        puts 'Waiting for server…'
+        sleep 0.1 until system "curl -s 'http://#{host}:#{port}/' > /dev/null"
+        puts 'Server ready.'
+        yield self
+      ensure
+        Process.kill(:TERM, server)
+        Process.wait(server)
+      end
+    end
+
+    def on_platform(options = {})
+      browser = options.fetch(:browser)
+      version = options.fetch(:version)
+      platform = options.fetch(:platform, nil)
+      device = options.fetch(:device, nil)
+
+      puts "=============== Testing on browser: #{browser} v#{version} #{"(#{platform})" if platform}"
+      require "selenium/webdriver"
+
+      caps = {}
+      caps[:platform]           = platform if platform
+      caps[:browserName]        = browser if browser
+      caps[:version]            = version if version
+      caps[:device]             = device if device
+      caps['tunnel-identifier'] = tunnel if tunnel
+
+      driver = Selenium::WebDriver.for(
+        :remote,
+        url: "http://#{username}:#{access_key}@localhost:4445/wd/hub",
+        desired_capabilities: caps
+      )
+
+      driver.get("http://#{host}:#{port}/")
+      yield driver
+      driver.quit
+    end
+
+    def test_title(driver)
+      if (title = driver.title) == 'Bob is authenticated'
+        puts "SUCCESS! title of webpage is: #{title}"
+      else
+        raise "FAILED! title of webpage is: #{title}"
+      end
+    end
+
+    def run(**options)
+      on_platform(**options) do |driver|
+        test_title(driver)
+      end
+    end
+  end
+
+  class HTTPServer
+    def with_server
+      begin
+        server = Process.spawn 'ruby test/opal/http_server.rb'
+        puts 'Waiting for server…'
+        sleep 0.1 until sinatra_server_running?
+        puts 'Server ready.'
+        yield self
+      ensure
+        if windows?
+          # https://blog.simplificator.com/2016/01/18/how-to-kill-processes-on-windows-using-ruby/
+          # system("taskkill /f /pid #{pid}")
+          Process.kill("KILL", server)
+        else
+          Process.kill(:TERM, server)
+        end
+        Process.wait(server)
+      end
+    end
+
+    def windows?
+      (/cygwin|mswin|mingw|bccwin|wince|emx/ =~ RUBY_PLATFORM) != nil
+    end
+
+    def sinatra_server_running?
+      puts "Connecting to localhost:4567..."
+      TCPSocket.new('localhost', '4567').close
+      true
+    rescue Errno::ECONNREFUSED, Errno::EADDRNOTAVAIL
+      false
+    end
+  end
+end
+
+
+pattern_usage = <<-DESC
+Use PATTERN environment variable to manually set the glob for specs:
+
+  # Will run all specs matching the specified pattern.
+  # (Note: the ruby_specs filters will still apply)
+  bundle exec rake mspec_nodejs PATTERN=spec/ruby/core/module/class_variable*_spec.rb
+  bundle exec rake mspec_nodejs PATTERN=spec/ruby/core/numeric/**_spec.rb
+DESC
+
+platforms = %w[nodejs opalopal_nodejs server chrome gjs quickjs]
+node_platforms = %w[nodejs opalopal_nodejs]
+mspec_suites = %w[ruby opal]
+minitest_suites = %w[cruby]
+
+require 'opal/paths'
+opalopal_cmdline = "-sreadline -rnodejs -rcorelib/string/unpack -popal/cli_runners/nodejs exe/opal -- #{Opal.paths.map{|i| "-I#{i}"}.join(" ")} --no-source-map "
+
+platforms.each do |platform|
+  mspec_suites.each do |suite|
+    desc "Run the MSpec test suite on Opal::Builder/#{platform}" + pattern_usage
+    task :"mspec_#{suite}_#{platform}" do
+      filename = "tmp/mspec_#{platform}.rb"
+      if platform.start_with? "opalopal_"
+        platform = platform.split('_').last
+        cmdline = opalopal_cmdline
+      end
+      mkdir_p File.dirname(filename)
+      bm_filepath = Testing::MSpec.bm_filepath if ENV['BM']
+      specs_env = {
+        'SUITE' => suite,
+        'FORMATTER' => platform, # Use the current platform as the default formatter
+        'BM_FILEPATH' => bm_filepath,
+      }.merge(ENV.to_hash)
+
+      Testing::MSpec.write_file filename, Testing::MSpec.filters(suite), Testing::MSpec.specs(specs_env), specs_env
+
+      stubs = Testing::MSpec.stubs.map{|s| "-s#{s}"}.join(' ')
+
+      sh "ruby -w -rbundler/setup -r#{__dir__}/testing/mspec_special_calls "\
+         "exe/opal #{cmdline} -Ispec/mspec/lib -Ispec -Ilib #{stubs} -R#{platform} -Dwarning -A --enable-source-location #{filename}"
+
+      if bm_filepath
+        puts "Benchmark results have been written to #{bm_filepath}"
+        puts "To view the results, run bundle exec rake bench:report"
+      end
+    end
+  end
+
+  minitest_suites.each do |suite|
+    desc "Run the Minitest suite on Opal::Builder/#{platform}" + pattern_usage
+    task :"minitest_#{suite}_#{platform}" do
+      if ENV.key? 'FILES'
+        files = Dir[ENV['FILES']]
+        includes = "-Itmp"
+      else
+        includes = "-Itest/cruby/test"
+        files = %w[
+          benchmark/test_benchmark.rb
+          ruby/test_call.rb
+          opal/test_keyword.rb
+          opal/test_base64.rb
+          opal/test_openuri.rb
+          opal/test_uri.rb
+          opal/unsupported_and_bugs.rb
+          opal/test_matrix.rb
+          opal/promisev2/test_always.rb
+          opal/promisev2/test_error.rb
+          opal/promisev2/test_rescue.rb
+          opal/promisev2/test_then.rb
+          opal/promisev2/test_trace.rb
+          opal/promisev2/test_value.rb
+          opal/promisev2/test_when.rb
+        ]
+      end
+      Testing::HTTPServer.new.with_server do |session|
+        filename = "tmp/minitest_#{suite}_#{platform}.rb"
+        if platform.start_with? "opalopal_"
+          platform = platform.split('_').last
+          cmdline = opalopal_cmdline
+        end
+        files.push('nodejs') if platform == 'nodejs'
+        Testing::Minitest.write_file(filename, files, ENV)
+
+        stubs = "-soptparse -sio/console -stimeout -smutex_m -srubygems -stempfile -smonitor"
+        includes = "-Itest -Ilib -Ivendored-minitest #{includes}"
+
+        sh "ruby -rbundler/setup "\
+         "exe/opal #{cmdline} #{includes} #{stubs} -R#{platform} -Dwarning -A --enable-source-location #{filename}"
+      end
+    end
+  end
+end
+
+node_platforms.each do |platform|
+  # The name ends with the platform, which is of course mandated in this case
+  desc "Run the Node.js Minitest suite on #{platform}"
+  task :"minitest_node_#{platform}" do
+    if platform.start_with? "opalopal_"
+      platform = platform.split('_').last
+      cmdline = opalopal_cmdline
+    end
+    files = %w[
+      nodejs
+      opal-parser
+      nodejs/test_dir.rb
+      nodejs/test_env.rb
+      nodejs/test_error.rb
+      nodejs/test_file.rb
+      nodejs/test_file_encoding.rb
+      nodejs/test_io.rb
+      nodejs/test_opal_builder.rb
+      nodejs/test_string.rb
+      nodejs/test_await.rb
+    ]
+
+    filename = "tmp/minitest_node_nodejs.rb"
+    Testing::Minitest.write_file(filename, files, ENV)
+
+    stubs = "-soptparse -sio/console -stimeout -smutex_m -srubygems -stempfile -smonitor"
+    includes = "-Itest -Ilib -Ivendored-minitest"
+
+    use_strict_opt = ENV['USE_STRICT'] ? ' --use-strict' : ''
+    sh "ruby -rbundler/setup "\
+      "exe/opal #{cmdline} #{includes} #{stubs} -R#{platform} -Dwarning -A --enable-source-location#{use_strict_opt} #{filename}"
+  end
+end
+
+desc 'Run smoke tests with opal-rspec to see if something is broken'
+task :smoke_test do
+  opal_rspec_dir = File.expand_path('tmp/smoke_test_opal_rspec')
+  gemfile_name = 'opal_rspec_smoketest.Gemfile'
+  actual_output_path = "#{opal_rspec_dir}/output.txt"
+
+  # Travis caching might be creating this, manage the state idempotently
+  unless File.exist?(File.join(opal_rspec_dir, '.git'))
+    rm_rf opal_rspec_dir
+    sh "git clone https://github.com/opal/opal-rspec.git #{opal_rspec_dir}"
+  end
+
+  cp "tasks/testing/#{gemfile_name}", "#{opal_rspec_dir}/Gemfile"
+
+  cd opal_rspec_dir do
+    Bundler.with_unbundled_env do
+      sh 'bundle check && bundle update opal-rspec || bundle install'
+      sh %{bundle exec opal-rspec --color --default-path=../../spec ../../spec/lib/deprecations_spec.rb > #{actual_output_path}}
+
+      actual_output = File.read(actual_output_path)
+      begin
+        require 'rspec/expectations'
+        extend RSpec::Matchers
+        expect(actual_output.lines[0]).to    eq("..\n")
+        expect(actual_output.lines[1]).to    eq("\n")
+        expect(actual_output.lines[2]).to match(%r{^Finished in \d+\.\d+ seconds \(files took \d+\.\d+ seconds to load\)\n$})
+        expect(actual_output.lines[3]).to    eq("2 examples, 0 failures\n")
+        expect(actual_output.lines[4]).to    eq("\n")
+        expect(actual_output.lines[5]).to match(%r{Top 2 slowest examples \(\d+\.\d+ seconds, \d+\.\d+% of total time\):\n})
+        expect(actual_output.lines[6]).to    eq("  Opal::Deprecations defaults to warn\n")
+        expect(actual_output.lines[7]).to match(%r{    \[1m\d+\.\d+\[0m \[1mseconds\[0m \n})
+        expect(actual_output.lines[8]).to    eq("  Opal::Deprecations can be set to raise\n")
+      rescue RSpec::Expectations::ExpectationNotMetError
+        warn $!.message
+        warn "\n\n== Full output:\n#{actual_output}"
+        exit 1
+      end
+    end
+  end
+
+  puts "Smoke test was successful!"
+end
+
+desc 'Run browser tests with SauceLabs'
+task :browser_test do
+  credentials = {
+    username: ENV['SAUCE_USERNAME'] || warn('missing SAUCE_USERNAME env var'),
+    access_key: ENV['SAUCE_ACCESS_KEY'] || warn('missing SAUCE_ACCESS_KEY env var'),
+    tunnel: ENV['TRAVIS_JOB_NUMBER'],
+  }
+
+  # Exit if we're missing credentials.
+  exit unless credentials[:username] && credentials[:access_key]
+
+  Testing::SauceLabs.new(credentials).with_server do |session|
+    session.run(browser: 'Internet Explorer', version: '9')
+    session.run(browser: 'Internet Explorer', version: '10')
+    session.run(browser: 'Internet Explorer', version: '11')
+    # session.run(browser: 'Edge', version: '13') # something goes wrong
+    session.run(browser: 'Firefox', version: '47')
+    session.run(browser: 'Firefox', version: '48')
+    # session.run(browser: 'Chrome', version: '52') # chrome webdriver is broken
+    # session.run(browser: 'Chrome', version: '53') # chrome webdriver is broken
+    session.run(browser: 'Safari', version: '8')
+    session.run(browser: 'Safari', version: '9')
+    session.run(browser: 'Safari', version: '10')
+  end
+end
+
+platforms.each do |platform|
+  desc "Run the whole MSpec suite on #{platform}"
+  task :"mspec_#{platform}" => mspec_suites.map { |suite| :"mspec_#{suite}_#{platform}" }
+end
+
+platforms.each do |platform|
+  desc "Run the whole Minitest suite on #{platform}"
+  task :"minitest_#{platform}" => minitest_suites.map { |suite| :"minitest_#{suite}_#{platform}" }
+end
+
+desc "Run the whole MSpec suite on all platforms"
+task :mspec    => [:mspec_chrome, :mspec_nodejs]
+
+desc "Run the whole Minitest suite on all platforms"
+task :minitest => [:minitest_chrome, :minitest_nodejs, :minitest_node_nodejs]
+
+desc "Run all tests"
+task :test_all => [:rspec, :mspec, :minitest]
+
+# deprecated, can be removed after 0.11
+task(:cruby_tests) { warn "The task 'cruby_tests' has been renamed to 'minitest_cruby_nodejs'."; exit 1 }
+task(:test_cruby)  { warn "The task 'test_cruby' has been renamed to 'minitest_cruby_nodejs'."; exit 1 }
+task(:test_nodejs) { warn "The task 'test_nodejs' has been renamed to 'minitest_node_nodejs'."; exit 1 }
diff --git a/tasks/testing/mspec_special_calls.rb b/tasks/testing/mspec_special_calls.rb
new file mode 100644
index 00000000..83165721
--- /dev/null
+++ b/tasks/testing/mspec_special_calls.rb
@@ -0,0 +1,62 @@
+require 'opal/nodes/call'
+require 'opal/ast/builder'
+
+class Opal::Nodes::CallNode
+  # Rubyspec uses these calls features at runtime.
+  # We can't do this at runtime, so handle it during compilation
+
+  add_special :not_supported_on do |compile_default|
+    unless arglist.children.include?(s(:sym, :opal))
+      compile_default.call
+    end
+  end
+
+  has_xstring = -> node {
+    next if node.nil? || !node.respond_to?(:type)
+    node.type == :xstr || (node.children && node.children.any?(&has_xstring))
+  }
+
+  add_special :platform_is_not do |compile_default|
+    next if arglist.children.include?(s(:sym, :opal))
+    next if children.any?(&has_xstring)
+
+    compile_default.call
+  end
+
+  add_special :platform_is do |compile_default|
+    if arglist.children.include?(s(:sym, :opal)) || !children.any?(&has_xstring)
+      compile_default.call
+    end
+  end
+
+  add_special :requirable_spec_file do |compile_default|
+    str = DependencyResolver.new(compiler, arglist.children[0]).resolve
+    compiler.requires << str unless str.nil?
+  end
+end
+
+require 'opal/rewriters/rubyspec/filters_rewriter'
+
+Opal::Rewriter.use Opal::Rubyspec::FiltersRewriter
+
+# When a spec is marked as filtered (most probably non-implemented functionality)
+# we need to exclude it from the test suite
+# (except of the case with inverted suite specified using INVERT_RUNNING_MODE=true)
+#
+def opal_filter(filter_name, &block)
+  unless ENV['INVERT_RUNNING_MODE']
+    Opal::Rubyspec::FiltersRewriter.instance_eval(&block)
+  end
+end
+
+# When a spec is marked as unsupported we need to exclude it from the test suite.
+#
+# This filter ignores ENV['INVERT_RUNNING_MODE'],
+# unsupported feature is always unsupported.
+#
+def opal_unsupported_filter(filter_name, &block)
+  Opal::Rubyspec::FiltersRewriter.instance_eval(&block)
+end
+
+Dir[File.expand_path('../../../spec/filters/unsupported/**/*.rb', __FILE__)].each { |f| require f }
+Dir[File.expand_path('../../../spec/filters/bugs/**/*.rb', __FILE__)].each { |f| require f }
diff --git a/tasks/testing/opal_rspec_smoketest.Gemfile b/tasks/testing/opal_rspec_smoketest.Gemfile
new file mode 100644
index 00000000..663d5dfa
--- /dev/null
+++ b/tasks/testing/opal_rspec_smoketest.Gemfile
@@ -0,0 +1,6 @@
+source 'https://rubygems.org'
+
+gem 'opal-rspec', github: 'opal/opal-rspec', branch: 'master', submodules: true
+gem 'opal-sprockets', github: 'opal/opal-sprockets'
+gem 'opal', path: '../..'
+gem 'rake'
diff --git a/test/nodejs/fixtures/cat.png b/test/nodejs/fixtures/cat.png
new file mode 100644
index 00000000..23ed0b1a
Binary files /dev/null and b/test/nodejs/fixtures/cat.png differ
diff --git a/test/nodejs/fixtures/hello.rb b/test/nodejs/fixtures/hello.rb
new file mode 100644
index 00000000..351a2e02
--- /dev/null
+++ b/test/nodejs/fixtures/hello.rb
@@ -0,0 +1 @@
+puts "Hello world"
diff --git a/test/nodejs/fixtures/iso88591.txt b/test/nodejs/fixtures/iso88591.txt
new file mode 100644
index 00000000..074cd2a8
--- /dev/null
+++ b/test/nodejs/fixtures/iso88591.txt
@@ -0,0 +1 @@
+���
\ No newline at end of file
diff --git a/test/nodejs/fixtures/symlink-to-directory b/test/nodejs/fixtures/symlink-to-directory
new file mode 120000
index 00000000..945c9b46
--- /dev/null
+++ b/test/nodejs/fixtures/symlink-to-directory
@@ -0,0 +1 @@
+.
\ No newline at end of file
diff --git a/test/nodejs/fixtures/symlink-to-file b/test/nodejs/fixtures/symlink-to-file
new file mode 120000
index 00000000..94740a93
--- /dev/null
+++ b/test/nodejs/fixtures/symlink-to-file
@@ -0,0 +1 @@
+hello.rb
\ No newline at end of file
diff --git a/test/nodejs/fixtures/utf8.txt b/test/nodejs/fixtures/utf8.txt
new file mode 100644
index 00000000..69d7f7ef
--- /dev/null
+++ b/test/nodejs/fixtures/utf8.txt
@@ -0,0 +1 @@
+çéà
\ No newline at end of file
diff --git a/test/nodejs/fixtures/win1258.txt b/test/nodejs/fixtures/win1258.txt
new file mode 100644
index 00000000..074cd2a8
--- /dev/null
+++ b/test/nodejs/fixtures/win1258.txt
@@ -0,0 +1 @@
+���
\ No newline at end of file
diff --git a/test/nodejs/test_await.rb b/test/nodejs/test_await.rb
new file mode 100644
index 00000000..84b013f9
--- /dev/null
+++ b/test/nodejs/test_await.rb
@@ -0,0 +1,169 @@
+# frozen_string_literal: true
+# await: true
+
+require "test/unit"
+
+class TestAwait < Test::Unit::TestCase
+  stdheader = <<~RUBY
+    # await: true
+    require "await"
+  RUBY
+
+  tests = {
+    test_await_in_top: [<<~RUBY, 6],
+      #{stdheader}
+      $taval = 5
+      sleep(0.001).__await__
+      $taval = 6
+    RUBY
+    test_await_in_method: [<<~RUBY, 7],
+      #{stdheader}
+      $taval = 5
+      def xx_taim
+        sleep(0.001).__await__
+        $taval = 7
+      end
+      xx_taim.__await__
+    RUBY
+    test_await_in_block: [<<~RUBY, 0],
+      #{stdheader}
+      $taval = 5
+      xx_taib = proc do
+        sleep(0.001).__await__
+        $taval = 0
+      end
+      xx_taib.().__await__
+    RUBY
+    test_await_in_instance_method: [<<~RUBY, 3],
+      #{stdheader}
+      $taval = 5
+      class XXTaiim
+        def xx_taiim
+          sleep(0.001).__await__
+          $taval = 3
+        end
+      end
+      XXTaiim.new.xx_taiim.__await__
+    RUBY
+    test_await_in_class_method: [<<~RUBY, 4],
+      #{stdheader}
+      $taval = 5
+      class XXTaicm
+        def self.xx_taicm
+          sleep(0.001).__await__
+          $taval = 4
+        end
+      end
+      XXTaicm.xx_taicm.__await__
+    RUBY
+    test_await_on_promise: [<<~RUBY, 8],
+      #{stdheader}
+      $taval = PromiseV2.value(8).__await__
+    RUBY
+    test_await_in_while: [<<~RUBY, 9],
+      #{stdheader}
+      $taval = 5
+      begin
+        sleep(0.001).__await__
+        $taval = 9
+      end while false
+    RUBY
+    test_await_in_while_expr: [<<~RUBY, -9],
+      #{stdheader}
+      $taval = 5
+      x = if true
+        begin
+          sleep(0.001).__await__
+          $taval = -9
+        end while false
+      end
+    RUBY
+    test_await_in_case: [<<~RUBY, 88],
+      #{stdheader}
+      $taval = 5
+      case true
+      when true
+        sleep(0.001).__await__
+        $taval = 88
+      end
+    RUBY
+    test_await_in_case_expr: [<<~RUBY, 99],
+      #{stdheader}
+      $taval = 5
+      x = case true
+      when true
+        sleep(0.001).__await__
+        $taval = 99
+      end
+    RUBY
+    test_await_in_rescue: [<<~RUBY, 10],
+      #{stdheader}
+      $taval = 5
+      begin
+        sleep(0.001).__await__
+        nomethoderror
+      rescue
+        sleep(0.001).__await__
+        $taval = 10
+      end
+    RUBY
+    test_await_in_ensure: [<<~RUBY, 11],
+      #{stdheader}
+      $taval = 5
+      begin
+        sleep(0.001).__await__
+        nomethoderror
+      rescue
+        sleep(0.001).__await__
+      ensure
+        sleep(0.001).__await__
+        $taval = 11
+      end
+    RUBY
+    test_await_in_ensure_expr: [<<~RUBY, -11],
+      #{stdheader}
+      $taval = 5
+      x = begin
+        sleep(0.001).__await__
+        nomethoderror
+      rescue
+        sleep(0.001).__await__
+      ensure
+        sleep(0.001).__await__
+        $taval = -11
+      end
+    RUBY
+    test_await_in_module: [<<~RUBY, 12],
+      #{stdheader}
+      $taval = 5
+      module XYTaim
+        sleep(0.001).__await__
+        $taval = 12
+      end
+    RUBY
+    test_await_in_class: [<<~RUBY, 13],
+      #{stdheader}
+      $taval = 5
+      class XYTaic
+        sleep(0.001).__await__
+        $taval = 13
+      end
+    RUBY
+    test_await_in_and: [<<~RUBY, 14],
+      #{stdheader}
+      ($taval = 5) && (PromiseV2.value(4).__await__) && ($taval = 14)
+    RUBY
+    test_await_in_plus: [<<~RUBY, 15],
+      #{stdheader}
+      $taval = 5
+      $taval = PromiseV2.value(5).__await__ + 10
+    RUBY
+  }
+
+  tests.each do |name,(code,expect)|
+    define_method name do
+      eval(code).__await__
+      assert_equal(expect, $taval)
+    end
+  end
+end
\ No newline at end of file
diff --git a/test/nodejs/test_dir.rb b/test/nodejs/test_dir.rb
new file mode 100644
index 00000000..ecd20e03
--- /dev/null
+++ b/test/nodejs/test_dir.rb
@@ -0,0 +1,39 @@
+# Copied from cruby and modified to skip unsupported syntaxes
+require 'test/unit'
+require 'nodejs'
+require 'nodejs/dir'
+
+class TestNodejsDir < Test::Unit::TestCase
+
+  def tmpdir
+    `require('os').tmpdir()`
+  end
+
+  def test_dir_entries
+    path = tmpdir + "/testing_nodejs_dir_entries_implementation_#{Time.now.to_i}"
+    Dir.mkdir(path)
+    result = Dir.entries(path)
+    assert_equal(result.length, 0)
+    File.open(path + '/bar', "w") {}
+    File.open(path + '/baz', "w") {}
+    result = Dir.entries(path)
+    assert_equal(result.length, 2)
+  end
+  
+  def test_dir_glob
+    path = tmpdir + "/testing_nodejs_dir_glob_implementation_#{Time.now.to_i}"
+    Dir.mkdir(path)
+    result = Dir.glob(path + '/*')
+    assert_equal(result.length, 0)
+    File.open(path + '/bar', "w") {}
+    File.open(path + '/baz', "w") {}
+    result = Dir.glob(path + '/ba*')
+    assert_equal(result.length, 2)
+    result = Dir.glob(path + '/*z')
+    assert_equal(result.length, 1)
+    result = Dir.glob([path + '/baz', path + '/bar'])
+    assert_equal(result.length, 2)
+    result = Dir.glob(Pathname.new(path).join('*'))
+    assert_equal(result.length, 2)
+  end
+end
diff --git a/test/nodejs/test_env.rb b/test/nodejs/test_env.rb
new file mode 100644
index 00000000..d4aa46d1
--- /dev/null
+++ b/test/nodejs/test_env.rb
@@ -0,0 +1,62 @@
+require 'test/unit'
+require 'nodejs/env'
+
+class TestNodejsEnv < Test::Unit::TestCase
+
+  def shared_test_env_has_key(method)
+    assert_equal(false, ENV.send(method, 'should_never_be_set'))
+    ENV['foo'] = 'bar'
+    assert_equal(true, ENV.send(method, 'foo'))
+    assert_equal(false, ENV.send(method, 'bar'))
+    ENV.delete 'foo'
+    assert_equal(false, ENV.send(method, 'foo'))
+  end
+
+  def test_include?
+    shared_test_env_has_key('include?')
+  end
+
+  def test_has_key?
+    shared_test_env_has_key('has_key?')
+  end
+
+  def test_member?
+    shared_test_env_has_key('member?')
+  end
+
+  def test_key?
+    shared_test_env_has_key('key?')
+  end
+
+  def test_get
+    assert_equal(nil, ENV['should_never_be_set'])
+    ENV['foo'] = 'bar'
+    assert_equal('bar', ENV['foo'])
+    assert_equal(nil, ENV['bar'])
+    ENV.delete 'foo'
+    assert_equal(nil, ENV['foo'])
+  end
+
+  def test_delete
+    ENV['foo'] = 'bar'
+    assert_equal('bar', ENV.delete('foo'))
+    assert_equal(nil, ENV.delete('foo'))
+  end
+
+  def test_empty
+    ENV['foo'] = 'bar'
+    assert_equal(false, ENV.empty?)
+    ENV.delete 'foo'
+  end
+
+  def test_keys
+    ENV['foo'] = 'bar'
+    assert_includes(ENV.keys, 'foo')
+    ENV.delete 'foo'
+  end
+
+  def test_to_s
+    assert_equal('ENV', ENV.to_s)
+  end
+end
+
diff --git a/test/nodejs/test_error.rb b/test/nodejs/test_error.rb
new file mode 100644
index 00000000..cedeb6e5
--- /dev/null
+++ b/test/nodejs/test_error.rb
@@ -0,0 +1,29 @@
+require 'test/unit'
+require 'nodejs'
+
+class TestNodejsError < Test::Unit::TestCase
+
+  def test_should_preserve_stack
+    raise ArgumentError.new('oops')
+  rescue => ex
+    backtrace_line = " from nodejs/test_error.rb:#{__LINE__ - 2}"
+    wrapped_ex = ex.exception %(context - #{ex.message})
+    assert(`wrapped_ex.stack`.include?(backtrace_line))
+  end
+
+  def test_should_set_stack
+    raise ArgumentError.new('oops')
+  rescue => ex
+    backtrace_line = " from nodejs/test_error.rb:#{__LINE__ - 2}"
+    wrapped_ex = ex.exception %(context - #{ex.message})
+    wrapped_ex.set_backtrace ex.backtrace
+    assert(`wrapped_ex.stack`.include?(backtrace_line))
+  end
+
+  def test_should_get_stack
+    raise ArgumentError.new('oops')
+  rescue => ex
+    backtrace_line = " from nodejs/test_error.rb:#{__LINE__ - 2}"
+    assert(`ex.stack`.include?(backtrace_line))
+  end
+end
diff --git a/test/nodejs/test_file.rb b/test/nodejs/test_file.rb
new file mode 100644
index 00000000..7258ca4b
--- /dev/null
+++ b/test/nodejs/test_file.rb
@@ -0,0 +1,217 @@
+# Copied from cruby and modified to skip unsupported syntaxes
+require 'test/unit'
+require 'nodejs'
+require 'nodejs/file'
+
+class TestNodejsFile < Test::Unit::TestCase
+  def tmpdir
+    `require('os').tmpdir()`
+  end
+
+  def self.windows_platform?
+    `process.platform`.start_with?('win')
+  end
+
+  def test_instantiate_without_open_mode
+    # By default the open mode is 'r' (read only)
+    File.write('tmp/quz', "world")
+    file = File.new('tmp/quz')
+    assert_equal('tmp/quz', file.path)
+  end
+
+  def test_mtime
+    File.write('tmp/qix', "hello")
+    file = 'tmp/qix'
+    File.new(file, 'r')
+
+    t1 = File.mtime(file)
+    t2 = File.open(file) {|f| f.mtime}
+    assert_kind_of(Time, t1)
+    assert_kind_of(Time, t2)
+    assert_equal(t1, t2)
+    assert_raise(Errno::ENOENT) { File.mtime('nofile') }
+  end
+
+  def test_write_read
+    path = tmpdir + "/testing_nodejs_file_implementation_#{Time.now.to_i}"
+    contents = 'foobar'
+    assert !File.exist?(path)
+    File.write path, contents
+
+    assert_equal(contents, File.read(path))
+  end
+
+  def test_read_file
+    File.write('tmp/foo', 'bar')
+    assert_equal('bar', File.read('tmp/foo'))
+  end
+
+  def test_read_binary_image
+    assert_match(/^\u0089PNG\r\n\u001A\n\u0000\u0000\u0000\rIHDR.*/, File.open('./test/nodejs/fixtures/cat.png', 'rb') {|f| f.read })
+  end
+
+  def test_read_binary_utf8_file
+    binary_text = ::File.open('./test/nodejs/fixtures/utf8.txt', 'rb') {|f| f.read}
+    assert_equal(binary_text.encoding, Encoding::UTF_8)
+    assert_match(/^\u00E7\u00E9\u00E0/, binary_text)
+    utf8_text = binary_text.force_encoding('utf-8')
+    assert_equal("çéà", utf8_text)
+  end
+
+  def test_read_binary_iso88591_file
+    binary_text = ::File.open('./test/nodejs/fixtures/iso88591.txt', 'rb') {|f| f.read}
+    assert_equal(binary_text.encoding, Encoding::UTF_8)
+    assert_match(/^\u00E7\u00E9\u00E0/, binary_text)
+    utf8_text = binary_text.force_encoding('utf-8')
+    assert_equal("çéà", utf8_text)
+  end
+
+  def test_read_binary_win1258_file
+    binary_text = ::File.open('./test/nodejs/fixtures/win1258.txt', 'rb') {|f| f.read}
+    assert_equal(binary_text.encoding, Encoding::UTF_8)
+    assert_match(/^\u00E7\u00E9\u00E0/, binary_text)
+    utf8_text = binary_text.force_encoding('utf-8')
+    assert_equal("çéà", utf8_text)
+  end
+
+  def test_read_each_line
+    File.write('tmp/bar', "one\ntwo")
+    file = File.new('tmp/bar', 'r')
+    lines = []
+    file.each_line do |line|
+      lines << line
+    end
+    assert_equal(2, lines.length)
+    assert_equal("one\n", lines[0])
+    assert_equal('two', lines[1])
+  end
+
+  def test_readlines
+    File.write('tmp/quz', "one\ntwo")
+    file = File.new('tmp/quz', 'r')
+    lines = file.readlines
+    assert_equal(2, lines.length)
+    assert_equal("one\n", lines[0])
+    assert_equal('two', lines[1])
+  end
+
+  def test_readlines_separator
+    File.write('tmp/qux', "one-two")
+    file = File.new('tmp/qux', 'r')
+    lines = file.readlines '-'
+    assert_equal(2, lines.length)
+    assert_equal('one-', lines[0])
+    assert_equal('two', lines[1])
+  end
+
+  def test_read_noexistent_should_raise_io_error
+    assert_raise Errno::ENOENT do
+      File.read('tmp/nonexistent')
+    end
+  end
+
+  def test_mtime_noexistent_should_raise_io_error
+    assert_raise(Errno::ENOENT) { File.mtime('tmp/nonexistent') }
+  end
+
+  def test_current_directory_should_be_a_directory
+    assert(File.directory?('.'))
+  end
+
+  def test_current_directory_should_be_a_directory_using_pathname
+    current_dir = Pathname.new('.')
+    assert(current_dir.directory?)
+  end
+
+  def test_directory_check
+    refute(File.directory?('test/nodejs/fixtures/non-existent'),          'test/nodejs/fixtures/non-existent should not be a directory')
+    assert(File.directory?('test/nodejs/fixtures/'),                      'test/nodejs/fixtures/ should be a directory')
+    assert(File.directory?('test/nodejs/fixtures'),                       'test/nodejs/fixtures should be a directory')
+    refute(File.directory?('test/nodejs/fixtures/hello.rb'),              'test/nodejs/fixtures/hello.rb should not be a directory')
+  end
+
+  def test_directory_check_with_symlinks
+    assert(File.directory?('test/nodejs/fixtures/symlink-to-directory'),  'test/nodejs/fixtures/symlink-to-directory should be a directory')
+    assert(File.directory?('test/nodejs/fixtures/symlink-to-directory/'), 'test/nodejs/fixtures/symlink-to-directory/ should be a directory')
+    refute(File.directory?('test/nodejs/fixtures/symlink-to-file'),       'test/nodejs/fixtures/symlink-to-file should not be a directory')
+  end unless windows_platform?
+
+  def test_file_check
+    refute(File.file?('test/nodejs/fixtures/non-existent'),          'test/nodejs/fixtures/non-existent should not be a file')
+    refute(File.file?('test/nodejs/fixtures/'),                      'test/nodejs/fixtures/ should not be a file')
+    refute(File.file?('test/nodejs/fixtures'),                       'test/nodejs/fixtures should not be a file')
+    assert(File.file?('test/nodejs/fixtures/hello.rb'),              'test/nodejs/fixtures/hello.rb should be a file')
+  end
+
+  def test_file_check_with_symlinks
+    refute(File.file?('test/nodejs/fixtures/symlink-to-directory'),  'test/nodejs/fixtures/symlink-to-directory should not be a file')
+    refute(File.file?('test/nodejs/fixtures/symlink-to-directory/'), 'test/nodejs/fixtures/symlink-to-directory/ should not be a file')
+    assert(File.file?('test/nodejs/fixtures/symlink-to-file'),       'test/nodejs/fixtures/symlink-to-file should be a file')
+  end unless windows_platform?
+
+  def test_file_symlink?
+    assert(File.symlink?('test/nodejs/fixtures/symlink-to-file'))
+    assert(File.symlink?('test/nodejs/fixtures/symlink-to-directory'))
+    refute(File.symlink?('test/nodejs/fixtures'))
+    refute(File.symlink?('test/nodejs/fixtures/hello.rb'))
+  end unless windows_platform?
+
+  def test_file_readable
+    assert !File.readable?('tmp/nonexistent')
+    File.write('tmp/fuz', "hello")
+    assert File.readable?('tmp/fuz')
+  end
+
+  def test_linux_separators
+    assert_equal('/', File::SEPARATOR)
+    assert_equal('/', File::Separator)
+    assert_equal(nil, File::ALT_SEPARATOR)
+  end unless windows_platform?
+
+  def test_windows_separators
+    assert_equal('/', File::SEPARATOR)
+    assert_equal('/', File::Separator)
+    assert_equal('\\', File::ALT_SEPARATOR)
+  end if windows_platform?
+
+  def test_windows_file_expand_path
+    drive_letter = Dir.pwd.slice(0, 2)
+    assert_equal(Dir.pwd + '/foo/bar.js', File.expand_path('./foo/bar.js'))
+    assert_equal(drive_letter + '/foo/bar.js', File.expand_path('/foo/bar.js'))
+    assert_equal('c:/foo/bar.js', File.expand_path('c:/foo/bar.js'))
+    assert_equal('c:/foo/bar.js', File.expand_path('c:\\foo\\bar.js'))
+    assert_equal('c:/foo/bar.js', File.expand_path('bar.js', 'c:\\foo'))
+    assert_equal('c:/baz/bar.js', File.expand_path('\\baz\\bar.js', 'c:\\foo'))
+    assert_equal('c:/bar.js', File.expand_path('\\..\\bar.js', 'c:\\foo\\baz'))
+    assert_equal('c:/bar.js', File.expand_path('\\..\\bar.js', 'c:\\foo\\baz\\'))
+    assert_equal('c:/foo/baz/bar.js', File.expand_path('baz\\bar.js', 'c:\\foo'))
+    assert_equal('c:/baz/bar.js', File.expand_path('baz\\bar.js', 'c:\\foo\\..'))
+    assert_equal('d:/', File.expand_path('d:'), 'should add a trailing slash when the path is d:')
+    assert_equal('d:/', File.expand_path('d:/'), 'should preserve the trailing slash when the path d:/')
+    assert_equal(Dir.pwd, File.expand_path(drive_letter), 'should expand to the current directory when the path is c: (and the current directory is located in the c drive)')
+    assert_equal(drive_letter + '/', drive_letter + '/', 'should return c:/ when the path is c:/ because the path is absolute')
+  end if windows_platform?
+
+  def test_linux_file_expand_path
+    assert_equal(Dir.pwd + '/foo/bar.js', File.expand_path('./foo/bar.js'))
+    assert_equal(Dir.home + '/foo/bar.js', File.expand_path('~/foo/bar.js'))
+    assert_equal(Dir.home + '/foo/bar.js', File.expand_path('~/foo/bar.js', '/base/dir'))
+    assert_equal('/base/dir/foo/bar.js', File.expand_path('./foo/bar.js', '/base/dir'))
+    assert_equal(Dir.home + '/workspace/foo/bar.js', File.expand_path('./foo/bar.js', '~/workspace'))
+  end unless windows_platform?
+
+  def test_join
+    assert_equal('usr/bin', File.join('usr', 'bin'))
+    assert_equal('//a/b', File.join('//a', 'b'))
+  end
+
+  def test_join_supports_any_number_of_arguments
+    assert_equal("a/b/c/d", File.join("a", "b", "c", "d"))
+  end
+
+  def test_join_handles_leading_parts_edge_cases
+    assert_equal("/bin", File.join("/bin"))
+    assert_equal("/bin", File.join("/", "bin"))
+    assert_equal("/bin", File.join("/", "/bin"))
+  end
+end
diff --git a/test/nodejs/test_file_encoding.rb b/test/nodejs/test_file_encoding.rb
new file mode 100644
index 00000000..428d2dfb
--- /dev/null
+++ b/test/nodejs/test_file_encoding.rb
@@ -0,0 +1,20 @@
+require 'test/unit'
+require 'nodejs'
+require 'nodejs/file'
+
+class TestNodejsFileEncoding < Test::Unit::TestCase
+
+  def test_force_encoding_raw_text_to_utf8
+    raw_text = 'çéà'
+    assert_equal(raw_text.encoding, Encoding::UTF_8)
+    utf8_text = raw_text.force_encoding('utf-8')
+    assert_equal("çéà", utf8_text)
+  end
+
+  def test_force_encoding_from_binary_to_utf8
+    raw_text = "\xC3\xA7\xC3\xA9\xC3\xA0"
+    assert_equal(raw_text.encoding, Encoding::UTF_8)
+    utf8_text = raw_text.force_encoding('utf-8')
+    assert_equal("çéà", utf8_text)
+  end
+end
\ No newline at end of file
diff --git a/test/nodejs/test_io.rb b/test/nodejs/test_io.rb
new file mode 100644
index 00000000..c70e3529
--- /dev/null
+++ b/test/nodejs/test_io.rb
@@ -0,0 +1,18 @@
+# Copied from cruby and modified to skip unsupported syntaxes
+require 'test/unit'
+require 'nodejs'
+require 'nodejs/io'
+
+class TestNodejsIO < Test::Unit::TestCase
+
+  def test_binread
+    File.write('tmp/foo', 'bar')
+    assert_equal("bar", IO.binread('tmp/foo'))
+  end
+
+  def test_binread_noexistent_should_raise_io_error
+    assert_raise IOError do
+      IO.binread('tmp/nonexistent')
+    end
+  end
+end
diff --git a/test/nodejs/test_opal_builder.rb b/test/nodejs/test_opal_builder.rb
new file mode 100644
index 00000000..0851ad1d
--- /dev/null
+++ b/test/nodejs/test_opal_builder.rb
@@ -0,0 +1,12 @@
+require 'test/unit'
+require 'nodejs'
+require 'opal-builder'
+
+class TestNodejsOpalBuilder < Test::Unit::TestCase
+
+  def test_should_build_simple_ruby_file
+    builder = Opal::Builder.new
+    result = builder.build('test/nodejs/fixtures/hello.rb')
+    assert(/self\.\$puts\("Hello world"\)/.match(result.to_s))
+  end
+end
diff --git a/test/nodejs/test_pathname.rb b/test/nodejs/test_pathname.rb
new file mode 100644
index 00000000..b483469a
--- /dev/null
+++ b/test/nodejs/test_pathname.rb
@@ -0,0 +1,16 @@
+require 'test/unit'
+require 'nodejs'
+
+class TestNodejsPathname < Test::Unit::TestCase
+  def self.windows_platform?
+    `process.platform`.start_with?('win')
+  end
+
+  def test_windows_pathname_absolute
+    assert_equal(true, Pathname.new('c:/foo').absolute?)
+    assert_equal(true, Pathname.new('/foo').absolute?)
+    assert_equal(true, Pathname.new('\\foo').absolute?)
+    assert_equal(false, Pathname.new('.').absolute?)
+    assert_equal(false, Pathname.new('foo').absolute?)
+  end if windows_platform?
+end
diff --git a/test/nodejs/test_string.rb b/test/nodejs/test_string.rb
new file mode 100644
index 00000000..0fd5c5a6
--- /dev/null
+++ b/test/nodejs/test_string.rb
@@ -0,0 +1,25 @@
+require 'test/unit'
+require 'nodejs'
+
+class TestString < Test::Unit::TestCase
+  def test_should_get_bytes
+    assert_equal('foo'.bytesize, 3)
+    assert_equal('foo'.each_byte.to_a, [102, 111, 111])
+    assert_equal('foo'.bytes, [102, 111, 111])
+    assert_equal('foo'.bytes, [102, 111, 111])
+  end
+
+  def test_frozen
+    # Commented out examples somehow work in the strict mode,
+    # but otherwise they don't. I have unfortunately no idea
+    # on where it's mangled, but then I don't see it really
+    # as a really harmful thing.
+
+    #assert_equal((-'x').frozen?, true)
+    assert_equal((+'x').frozen?, false)
+    #assert_equal((-+-'x').frozen?, true)
+    assert_equal((+-+'x').frozen?, false)
+    #assert_equal((`'x'`).frozen?, true)
+    assert_equal((+`'x'`).frozen?, false)
+  end
+end
diff --git a/test/opal/cat.png b/test/opal/cat.png
new file mode 100644
index 00000000..23ed0b1a
Binary files /dev/null and b/test/opal/cat.png differ
diff --git a/test/opal/http_server.rb b/test/opal/http_server.rb
new file mode 100644
index 00000000..e84d8037
--- /dev/null
+++ b/test/opal/http_server.rb
@@ -0,0 +1,52 @@
+require 'sinatra'
+
+cat_image = File.open(File.join(File.dirname(__FILE__), 'cat.png'), 'rb').read
+
+get '/' do
+  'Ready!'
+end
+
+get '/plain_text' do
+  status 200
+  headers \
+    'Content-Type' => 'text/plain'
+  body 'plain text'
+end
+
+
+get '/no_header' do
+  status 200
+  headers \
+    'Content-Type' =>  ''
+  body 'no header'
+end
+
+get '/html' do
+  status 200
+  headers \
+    'Content-Type' => 'text/html; charset=utf-8'
+  body '<body>'
+end
+
+get '/png' do
+  status 200
+  headers \
+    'Content-Type' => 'image/png'
+  body cat_image
+end
+
+get '/404' do
+  status 404
+end
+
+get '/500' do
+  status 500
+end
+
+get '/last_modified' do
+  status 200
+  headers \
+    'Content-Type' => 'text/plain',
+    'Last-Modified' => 'Wed, 21 Oct 2015 07:28:00 GMT'
+  body 'Look Ma, I have a Last-Modified header'
+end
diff --git a/test/opal/promisev2/test_always.rb b/test/opal/promisev2/test_always.rb
new file mode 100644
index 00000000..39c9b0f1
--- /dev/null
+++ b/test/opal/promisev2/test_always.rb
@@ -0,0 +1,63 @@
+require 'test/unit'
+require 'promise/v2'
+
+class TestPromiseAlways < Test::Unit::TestCase
+  def test_calls_the_block_when_it_was_resolved
+    x = 42
+    PromiseV2.value(23)
+      .then { |v| x = v }
+      .always { |v| x = 2 }
+      .then { assert_equal(x, 2) }
+  end
+
+  def test_calls_the_block_when_it_was_rejected
+    x = 42
+    PromiseV2.error(23)
+      .rescue { |v| x = v }
+      .always { |v| x = 2 }
+      .always { assert_equal(x, 2) }
+  end
+
+  def test_acts_as_resolved
+    x = 42
+    PromiseV2.error(23)
+      .rescue { |v| x = v }
+      .always { x = 2 }
+      .then { x = 3 }
+      .always { assert_equal(x, 3) }
+  end
+
+  def test_can_be_called_multiple_times_on_resolved_promises
+    p = PromiseV2.value(2)
+    x = 1
+    ps = []
+    ps << p.then { x += 1 }
+    ps << p.fail { x += 2 }
+    ps << p.always { x += 3 }
+
+    PromiseV2.when(ps).always do
+      assert_equal(x, 5)
+    end
+  end
+
+  def test_can_be_called_multiple_times_on_rejected_promises
+    p = PromiseV2.error(2)
+    x = 1
+    ps = []
+    ps << p.then { x += 1 }.fail{}
+    ps << p.fail { x += 2 }
+    ps << p.always { x += 3 }.fail{}
+
+    PromiseV2.when(ps).then do
+      assert_equal(x, 6)
+    end
+  end
+
+  def test_raises_with_alwaysB_if_a_promise_has_already_been_chained
+    p = PromiseV2.new
+
+    p.then! {}
+
+    assert_raise(ArgumentError) { p.always! {} }
+  end
+end
diff --git a/test/opal/promisev2/test_error.rb b/test/opal/promisev2/test_error.rb
new file mode 100644
index 00000000..8ce87a37
--- /dev/null
+++ b/test/opal/promisev2/test_error.rb
@@ -0,0 +1,22 @@
+require 'test/unit'
+require 'promise/v2'
+
+class TestPromiseError < Test::Unit::TestCase
+  def test_rejects_the_promise_with_the_given_error
+    prom = PromiseV2.error(23)
+    assert_equal(prom.error, 23)
+    prom.rescue{} # Needed, otherwise we have an uncaught exception
+  end
+
+  def test_marks_the_promise_as_realized
+    prom = PromiseV2.error(23)
+    assert_equal(prom.realized?, true)
+    prom.rescue{} # Needed, otherwise we have an uncaught exception
+  end
+
+  def test_marks_the_promise_as_rejected
+    prom = PromiseV2.error(23)
+    assert_equal(prom.rejected?, true)
+    prom.rescue{}
+  end
+end
diff --git a/test/opal/promisev2/test_rescue.rb b/test/opal/promisev2/test_rescue.rb
new file mode 100644
index 00000000..544aa365
--- /dev/null
+++ b/test/opal/promisev2/test_rescue.rb
@@ -0,0 +1,59 @@
+require 'test/unit'
+require 'promise/v2'
+
+class TestPromiseRescue < Test::Unit::TestCase
+  def test_calls_the_block_when_the_promise_has_already_been_rejected
+    x = 42
+    PromiseV2.error(23)
+      .rescue { |v| x = v }
+      .always { assert_equal(x, 23) }
+  end
+
+  def test_calls_the_block_when_the_promise_is_rejected
+    a = PromiseV2.new
+    x = 42
+
+    pr = a.rescue { |v| x = v }
+    a.reject(23)
+
+    pr.always { assert_equal(x, 23) }
+  end
+
+  def test_does_not_call_then_blocks_when_the_promise_is_rejected
+    x = 42
+    y = 23
+
+    PromiseV2.error(23).then { y = 42 }.rescue { |v| x = v }.always do
+      assert_equal(x, 23)
+      assert_equal(y, 23)
+    end
+  end
+
+  def test_does_not_call_subsequent_rescue_blocks
+    x = 42
+    PromiseV2.error(23).rescue { |v| x = v }.rescue { x = 42 }.always do
+      assert_equal(x, 23)
+    end
+  end
+
+  def test_can_be_called_multiple_times_on_the_same_promise
+    p = PromiseV2.error(2)
+    x = 1
+
+    ps = []
+
+    ps << p.then { x += 1 }.rescue{}
+    ps << p.rescue { x += 3 }
+    ps << p.rescue { x += 3 }
+
+    PromiseV2.when(ps).always { assert_equal(x, 7) }
+  end
+
+  def test_raises_with_rescueB_if_a_promise_has_already_been_chained
+    p = PromiseV2.new
+
+    p.then! {}
+
+    assert_raise(ArgumentError) { p.rescue! {} }
+  end
+end
diff --git a/test/opal/promisev2/test_then.rb b/test/opal/promisev2/test_then.rb
new file mode 100644
index 00000000..0087dc08
--- /dev/null
+++ b/test/opal/promisev2/test_then.rb
@@ -0,0 +1,90 @@
+require 'test/unit'
+require 'promise/v2'
+
+class TestPromiseThen < Test::Unit::TestCase
+  def test_calls_the_block_when_the_promise_has_already_been_resolved
+    x = 42
+    PromiseV2.value(23)
+      .then { |v| x = v }
+      .always { assert_equal(x, 23) }
+  end
+
+  def test_calls_the_block_when_the_promise_is_resolved
+    a = PromiseV2.new
+    x = 42
+
+    p = a.then { |v| x = v }
+    a.resolve(23)
+
+    p.always { assert_equal(x, 23) }
+  end
+
+  def test_works_with_multiple_chains
+    x = 42
+    PromiseV2.value(2)
+      .then { |v| v * 2 }
+      .then { |v| v * 4 }
+      .then { |v| x = v }
+      .always { assert_equal(x, 16) }
+  end
+
+  def test_works_when_a_block_returns_a_promise
+    a = PromiseV2.new
+    b = PromiseV2.new
+
+    x = 42
+    p = a.then { b }.then { |v| x = v }
+
+    a.resolve(42)
+    b.resolve(23)
+
+    p.always { assert_equal(x, 23) }
+  end
+
+  def test_sends_raised_exceptions_as_rejections
+    x = nil
+
+    PromiseV2.value(2)
+      .then { raise "hue" }
+      .rescue { |v| x = v }
+      .always { assert_equal(x.class, RuntimeError) }
+  end
+
+  def test_sends_raised_exceptions_inside_rescue_blocks_as_next_errors
+    x = nil
+
+    PromiseV2.value(2)
+      .then { raise "hue" }
+      .rescue { raise "omg" }
+      .rescue { |v| x = v }
+      .always { assert_equal(x.class, RuntimeError) }
+  end
+
+  def test_allows_then_to_be_called_multiple_times
+    pr = PromiseV2.value(2)
+    x = 1
+
+    ps = []
+
+    ps << pr.then { x += 1 }
+    ps << pr.then { x += 1 }
+
+    PromiseV2.when(ps).always { assert_equal(x, 3) }
+  end
+
+  def test_raises_with_thenB_if_a_promise_has_already_been_chained
+    pr = PromiseV2.new
+
+    pr.then! {}
+
+    assert_raise(ArgumentError) { pr.then! {} }
+  end
+
+  def test_should_pass_a_delayed_falsy_value
+    pr = PromiseV2.new.resolve(5).then { nil }
+
+    pr.always do |value|
+      assert_equal(value, nil)
+    end
+  end
+end
diff --git a/test/opal/promisev2/test_trace.rb b/test/opal/promisev2/test_trace.rb
new file mode 100644
index 00000000..8110c020
--- /dev/null
+++ b/test/opal/promisev2/test_trace.rb
@@ -0,0 +1,52 @@
+require 'test/unit'
+require 'promise/v2'
+
+class TestPromiseTrace < Test::Unit::TestCase
+  def test_calls_the_block_with_all_the_previous_results
+    x = 42
+
+    PromiseV2.value(1)
+      .then { 2 }
+      .then { 3 }
+      .trace {|a, b, c| x = a + b + c }
+      .always { assert_equal(x, 6) }
+  end
+
+  def test_calls_the_then_after_the_trace
+    x = 42
+
+    PromiseV2.value(1)
+      .then { 2 }
+      .then { 3 }
+      .trace { |a, b, c| a + b + c }
+      .then { |v| x = v }
+      .always { assert_equal(x, 6) }
+  end
+
+  def test_includes_the_first_value
+    x = 42
+
+    PromiseV2.value(1)
+      .trace { |a| x = a }
+      .always { assert_equal(x, 1) }
+  end
+
+  def test_works_after_a_when
+    x = 42
+
+    PromiseV2.value(1).then {
+      PromiseV2.when PromiseV2.value(2), PromiseV2.value(3)
+    }.trace {|a, b|
+      #x = a + b[0] + b[1]
+      x = "#{a},#{b}"
+    }.always { assert_equal(x, "1,native") } # 6
+  end
+
+  def test_raises_with_traceB_if_a_promise_has_already_been_chained
+    p = PromiseV2.new
+
+    p.then! {}
+
+    assert_raise(ArgumentError) { p.trace! {} }
+  end
+end
diff --git a/test/opal/promisev2/test_value.rb b/test/opal/promisev2/test_value.rb
new file mode 100644
index 00000000..bc710675
--- /dev/null
+++ b/test/opal/promisev2/test_value.rb
@@ -0,0 +1,16 @@
+require 'test/unit'
+require 'promise/v2'
+
+class TestPromiseValue < Test::Unit::TestCase
+  def test_resolves_the_promise_with_the_given_value
+    assert_equal(PromiseV2.value(23).value, 23)
+  end
+
+  def test_marks_the_promise_as_realized
+    assert_equal(PromiseV2.value(23).realized?, true)
+  end
+
+  def test_marks_the_promise_as_resolved
+    assert_equal(PromiseV2.value(23).resolved?, true)
+  end
+end
diff --git a/test/opal/promisev2/test_when.rb b/test/opal/promisev2/test_when.rb
new file mode 100644
index 00000000..5a903808
--- /dev/null
+++ b/test/opal/promisev2/test_when.rb
@@ -0,0 +1,35 @@
+require 'test/unit'
+require 'promise/v2'
+
+class TestPromiseWhen < Test::Unit::TestCase
+  def test_calls_the_block_with_all_promises_results
+    a = PromiseV2.new
+    b = PromiseV2.new
+
+    x = 42
+
+    p = PromiseV2.when(a, b).then {|y, z|
+      x = y + z
+    }
+
+    a.resolve(1)
+    b.resolve(2)
+
+    p.always { assert_equal(x, 3) }
+  end
+
+  def test_can_be_built_lazily
+    a = PromiseV2.new
+    b = PromiseV2.value(3)
+
+    x = 42
+
+    p = PromiseV2.when(a).and(b).then {|c, d|
+      x = c + d
+    }
+
+    a.resolve(2)
+
+    p.always { assert_equal(x, 5) }
+  end
+end
diff --git a/test/opal/test_base64.rb b/test/opal/test_base64.rb
new file mode 100644
index 00000000..cf7c5193
--- /dev/null
+++ b/test/opal/test_base64.rb
@@ -0,0 +1,115 @@
+# coding: ascii-8bit
+# frozen_string_literal: false
+require "test/unit"
+require "base64"
+
+class TestBase64 < Test::Unit::TestCase
+  def test_sample
+    assert_equal("U2VuZCByZWluZm9yY2VtZW50cw==\n", Base64.encode64('Send reinforcements'))
+    assert_equal('Send reinforcements', Base64.decode64("U2VuZCByZWluZm9yY2VtZW50cw==\n"))
+    assert_equal(
+      "Tm93IGlzIHRoZSB0aW1lIGZvciBhbGwgZ29vZCBjb2RlcnMKdG8gbGVhcm4g\nUnVieQ==\n",
+      Base64.encode64("Now is the time for all good coders\nto learn Ruby"))
+    assert_equal(
+      "Now is the time for all good coders\nto learn Ruby",
+      Base64.decode64("Tm93IGlzIHRoZSB0aW1lIGZvciBhbGwgZ29vZCBjb2RlcnMKdG8gbGVhcm4g\nUnVieQ==\n"))
+    assert_equal(
+      "VGhpcyBpcyBsaW5lIG9uZQpUaGlzIGlzIGxpbmUgdHdvClRoaXMgaXMgbGlu\nZSB0aHJlZQpBbmQgc28gb24uLi4K\n",
+      Base64.encode64("This is line one\nThis is line two\nThis is line three\nAnd so on...\n"))
+    assert_equal(
+      "This is line one\nThis is line two\nThis is line three\nAnd so on...\n",
+      Base64.decode64("VGhpcyBpcyBsaW5lIG9uZQpUaGlzIGlzIGxpbmUgdHdvClRoaXMgaXMgbGluZSB0aHJlZQpBbmQgc28gb24uLi4K"))
+  end
+
+  def test_encode64
+    assert_equal("", Base64.encode64(""))
+    assert_equal("AA==\n", Base64.encode64("\0"))
+    assert_equal("AAA=\n", Base64.encode64("\0\0"))
+    assert_equal("AAAA\n", Base64.encode64("\0\0\0"))
+    assert_equal("/w==\n", Base64.encode64("\377"))
+    assert_equal("//8=\n", Base64.encode64("\377\377"))
+    assert_equal("////\n", Base64.encode64("\377\377\377"))
+    assert_equal("/+8=\n", Base64.encode64("\xff\xef"))
+  end
+
+  def test_decode64
+    assert_equal("", Base64.decode64(""))
+    assert_equal("\0", Base64.decode64("AA==\n"))
+    assert_equal("\0\0", Base64.decode64("AAA=\n"))
+    assert_equal("\0\0\0", Base64.decode64("AAAA\n"))
+    assert_equal("\377", Base64.decode64("/w==\n"))
+    assert_equal("\377\377", Base64.decode64("//8=\n"))
+    assert_equal("\377\377\377", Base64.decode64("////\n"))
+    assert_equal("\xff\xef", Base64.decode64("/+8=\n"))
+  end
+
+  def test_strict_encode64
+    assert_equal("", Base64.strict_encode64(""))
+    assert_equal("AA==", Base64.strict_encode64("\0"))
+    assert_equal("AAA=", Base64.strict_encode64("\0\0"))
+    assert_equal("AAAA", Base64.strict_encode64("\0\0\0"))
+    assert_equal("/w==", Base64.strict_encode64("\377"))
+    assert_equal("//8=", Base64.strict_encode64("\377\377"))
+    assert_equal("////", Base64.strict_encode64("\377\377\377"))
+    assert_equal("/+8=", Base64.strict_encode64("\xff\xef"))
+  end
+
+  def test_strict_decode64
+    assert_equal("", Base64.strict_decode64(""))
+    assert_equal("\0", Base64.strict_decode64("AA=="))
+    assert_equal("\0\0", Base64.strict_decode64("AAA="))
+    assert_equal("\0\0\0", Base64.strict_decode64("AAAA"))
+    assert_equal("\377", Base64.strict_decode64("/w=="))
+    assert_equal("\377\377", Base64.strict_decode64("//8="))
+    assert_equal("\377\377\377", Base64.strict_decode64("////"))
+    assert_equal("\xff\xef", Base64.strict_decode64("/+8="))
+
+    assert_raise(ArgumentError) { Base64.strict_decode64("^") }
+    assert_raise(ArgumentError) { Base64.strict_decode64("A") }
+    assert_raise(ArgumentError) { Base64.strict_decode64("A^") }
+    assert_raise(ArgumentError) { Base64.strict_decode64("AA") }
+    assert_raise(ArgumentError) { Base64.strict_decode64("AA=") }
+    assert_raise(ArgumentError) { Base64.strict_decode64("AA===") }
+    assert_raise(ArgumentError) { Base64.strict_decode64("AA=x") }
+    assert_raise(ArgumentError) { Base64.strict_decode64("AAA") }
+    assert_raise(ArgumentError) { Base64.strict_decode64("AAA^") }
+    assert_raise(ArgumentError) { Base64.strict_decode64("AB==") }
+    assert_raise(ArgumentError) { Base64.strict_decode64("AAB=") }
+  end
+
+  def test_urlsafe_encode64
+    assert_equal("", Base64.urlsafe_encode64(""))
+    assert_equal("AA==", Base64.urlsafe_encode64("\0"))
+    assert_equal("AAA=", Base64.urlsafe_encode64("\0\0"))
+    assert_equal("AAAA", Base64.urlsafe_encode64("\0\0\0"))
+    assert_equal("_w==", Base64.urlsafe_encode64("\377"))
+    assert_equal("__8=", Base64.urlsafe_encode64("\377\377"))
+    assert_equal("____", Base64.urlsafe_encode64("\377\377\377"))
+    assert_equal("_-8=", Base64.urlsafe_encode64("\xff\xef"))
+  end
+
+  def test_urlsafe_encode64_unpadded
+    assert_equal("", Base64.urlsafe_encode64("", padding: false))
+    assert_equal("AA", Base64.urlsafe_encode64("\0", padding: false))
+    assert_equal("AAA", Base64.urlsafe_encode64("\0\0", padding: false))
+    assert_equal("AAAA", Base64.urlsafe_encode64("\0\0\0", padding: false))
+  end
+
+  def test_urlsafe_decode64
+    assert_equal("", Base64.urlsafe_decode64(""))
+    assert_equal("\0", Base64.urlsafe_decode64("AA=="))
+    assert_equal("\0\0", Base64.urlsafe_decode64("AAA="))
+    assert_equal("\0\0\0", Base64.urlsafe_decode64("AAAA"))
+    assert_equal("\377", Base64.urlsafe_decode64("_w=="))
+    assert_equal("\377\377", Base64.urlsafe_decode64("__8="))
+    assert_equal("\377\377\377", Base64.urlsafe_decode64("____"))
+    assert_equal("\xff\xef", Base64.urlsafe_decode64("_+8="))
+  end
+
+  def test_urlsafe_decode64_unpadded
+    assert_equal("\0", Base64.urlsafe_decode64("AA"))
+    assert_equal("\0\0", Base64.urlsafe_decode64("AAA"))
+    assert_equal("\0\0\0", Base64.urlsafe_decode64("AAAA"))
+    assert_raise(ArgumentError) { Base64.urlsafe_decode64("AA=") }
+  end
+end
diff --git a/test/opal/test_keyword.rb b/test/opal/test_keyword.rb
new file mode 100644
index 00000000..e74aae2f
--- /dev/null
+++ b/test/opal/test_keyword.rb
@@ -0,0 +1,590 @@
+# Copied from cruby and modified to skip unsupported syntaxes
+require 'test/unit'
+
+class TestKeywordArguments < Test::Unit::TestCase
+  def f1(str: "foo", num: 424242)
+    [str, num]
+  end
+
+  def test_f1
+    skip %{TypeError: no implicit conversion of NilClass into String}
+
+    assert_equal(["foo", 424242], f1)
+    assert_equal(["bar", 424242], f1(str: "bar"))
+    assert_equal(["foo", 111111], f1(num: 111111))
+    assert_equal(["bar", 111111], f1(str: "bar", num: 111111))
+    assert_raise(ArgumentError) { f1(str: "bar", check: true) }
+    assert_raise(ArgumentError) { f1("string") }
+  end
+
+
+  def f2(x, str: "foo", num: 424242)
+    [x, str, num]
+  end
+
+  def test_f2
+    assert_equal([:xyz, "foo", 424242], f2(:xyz))
+    assert_equal([{"bar"=>42}, "foo", 424242], f2("bar"=>42))
+  end
+
+
+  def f3(str: "foo", num: 424242, **h)
+    [str, num, h]
+  end
+
+  def test_f3
+    assert_equal(["foo", 424242, {}], f3)
+    assert_equal(["bar", 424242, {}], f3(str: "bar"))
+    assert_equal(["foo", 111111, {}], f3(num: 111111))
+    assert_equal(["bar", 111111, {}], f3(str: "bar", num: 111111))
+    assert_equal(["bar", 424242, {:check=>true}], f3(str: "bar", check: true))
+    assert_raise(ArgumentError) { f3("string") }
+  end
+
+  # define_method(:f4) {|str: "foo", num: 424242| [str, num] }
+  #
+  # def test_f4
+  #   assert_equal(["foo", 424242], f4)
+  #   assert_equal(["bar", 424242], f4(str: "bar"))
+  #   assert_equal(["foo", 111111], f4(num: 111111))
+  #   assert_equal(["bar", 111111], f4(str: "bar", num: 111111))
+  #   assert_raise(ArgumentError) { f4(str: "bar", check: true) }
+  #   assert_raise(ArgumentError) { f4("string") }
+  # end
+
+  define_method(:f5) {|str: "foo", num: 424242, **h| [str, num, h] }
+
+  def test_f5
+    assert_equal(["foo", 424242, {}], f5)
+    assert_equal(["bar", 424242, {}], f5(str: "bar"))
+    assert_equal(["foo", 111111, {}], f5(num: 111111))
+    assert_equal(["bar", 111111, {}], f5(str: "bar", num: 111111))
+    assert_equal(["bar", 424242, {:check=>true}], f5(str: "bar", check: true))
+    assert_raise(ArgumentError) { f5("string") }
+  end
+
+
+  def f6(str: "foo", num: 424242, **h, &blk)
+    [str, num, h, blk]
+  end
+
+  def test_f6 # [ruby-core:40518]
+    assert_equal(["foo", 424242, {}, nil], f6)
+    assert_equal(["bar", 424242, {}, nil], f6(str: "bar"))
+    assert_equal(["foo", 111111, {}, nil], f6(num: 111111))
+    assert_equal(["bar", 111111, {}, nil], f6(str: "bar", num: 111111))
+    assert_equal(["bar", 424242, {:check=>true}, nil], f6(str: "bar", check: true))
+    a = f6 {|x| x + 42 }
+    assert_equal(["foo", 424242, {}], a[0, 3])
+    assert_equal(43, a.last.call(1))
+  end
+
+  def f7(*r, str: "foo", num: 424242, **h)
+    [r, str, num, h]
+  end
+
+  def test_f7 # [ruby-core:41772]
+    assert_equal([[], "foo", 424242, {}], f7)
+    assert_equal([[], "bar", 424242, {}], f7(str: "bar"))
+    assert_equal([[], "foo", 111111, {}], f7(num: 111111))
+    assert_equal([[], "bar", 111111, {}], f7(str: "bar", num: 111111))
+    assert_equal([[1], "foo", 424242, {}], f7(1))
+    assert_equal([[1, 2], "foo", 424242, {}], f7(1, 2))
+    assert_equal([[1, 2, 3], "foo", 424242, {}], f7(1, 2, 3))
+    assert_equal([[1], "bar", 424242, {}], f7(1, str: "bar"))
+    assert_equal([[1, 2], "bar", 424242, {}], f7(1, 2, str: "bar"))
+    assert_equal([[1, 2, 3], "bar", 424242, {}], f7(1, 2, 3, str: "bar"))
+  end
+
+  define_method(:f8) { |opt = :ion, *rest, key: :word|
+    [opt, rest, key]
+  }
+
+  def test_f8
+    assert_equal([:ion, [], :word], f8)
+    assert_equal([1, [], :word], f8(1))
+    assert_equal([1, [2], :word], f8(1, 2))
+  end
+
+  # def f9(r, o=42, *args, p, k: :key, **kw, &b)
+  #   [r, o, args, p, k, kw, b]
+  # end
+  #
+  # def test_f9
+  #   assert_equal([1, 42, [], 2, :key, {}, nil], f9(1, 2))
+  #   assert_equal([1, 2, [], 3, :key, {}, nil], f9(1, 2, 3))
+  #   assert_equal([1, 2, [3], 4, :key, {}, nil], f9(1, 2, 3, 4))
+  #   assert_equal([1, 2, [3, 4], 5, :key, {str: "bar"}, nil], f9(1, 2, 3, 4, 5, str: "bar"))
+  # end
+
+  def f10(a: 1, **)
+    a
+  end
+
+  def test_f10
+    assert_equal(42, f10(a: 42))
+    assert_equal(1, f10(b: 42))
+  end
+
+  def test_method_parameters
+    skip %{NoMethodError: undefined method `parameters' for #<Method: TestKeywordArguments#f1>}
+
+    assert_equal([[:key, :str], [:key, :num]], method(:f1).parameters);
+    assert_equal([[:req, :x], [:key, :str], [:key, :num]], method(:f2).parameters);
+    assert_equal([[:key, :str], [:key, :num], [:keyrest, :h]], method(:f3).parameters);
+    assert_equal([[:key, :str], [:key, :num]], method(:f4).parameters);
+    assert_equal([[:key, :str], [:key, :num], [:keyrest, :h]], method(:f5).parameters);
+    assert_equal([[:key, :str], [:key, :num], [:keyrest, :h], [:block, :blk]], method(:f6).parameters);
+    assert_equal([[:rest, :r], [:key, :str], [:key, :num], [:keyrest, :h]], method(:f7).parameters);
+    assert_equal([[:opt, :opt], [:rest, :rest], [:key, :key]], method(:f8).parameters) # [Bug #7540] [ruby-core:50735]
+    assert_equal([[:req, :r], [:opt, :o], [:rest, :args], [:req, :p], [:key, :k],
+                  [:keyrest, :kw], [:block, :b]], method(:f9).parameters)
+  end
+
+  def test_lambda
+    f = ->(str: "foo", num: 424242) { [str, num] }
+    assert_equal(["foo", 424242], f[])
+    assert_equal(["bar", 424242], f[str: "bar"])
+    assert_equal(["foo", 111111], f[num: 111111])
+    assert_equal(["bar", 111111], f[str: "bar", num: 111111])
+  end
+
+
+  # def p1
+  #   Proc.new do |str: "foo", num: 424242|
+  #     [str, num]
+  #   end
+  # end
+  #
+  # def test_p1
+  #   assert_equal(["foo", 424242], p1[])
+  #   assert_equal(["bar", 424242], p1[str: "bar"])
+  #   assert_equal(["foo", 111111], p1[num: 111111])
+  #   assert_equal(["bar", 111111], p1[str: "bar", num: 111111])
+  #   assert_raise(ArgumentError) { p1[str: "bar", check: true] }
+  #   assert_equal(["foo", 424242], p1["string"] )
+  # end
+
+
+  def p2
+    Proc.new do |x, str: "foo", num: 424242|
+      [x, str, num]
+    end
+  end
+
+  def test_p2
+    assert_equal([nil, "foo", 424242], p2[])
+    assert_equal([:xyz, "foo", 424242], p2[:xyz])
+  end
+
+
+  # def p3
+  #   Proc.new do |str: "foo", num: 424242, **h|
+  #     [str, num, h]
+  #   end
+  # end
+  #
+  # def test_p3
+  #   assert_equal(["foo", 424242, {}], p3[])
+  #   assert_equal(["bar", 424242, {}], p3[str: "bar"])
+  #   assert_equal(["foo", 111111, {}], p3[num: 111111])
+  #   assert_equal(["bar", 111111, {}], p3[str: "bar", num: 111111])
+  #   assert_equal(["bar", 424242, {:check=>true}], p3[str: "bar", check: true])
+  #   assert_equal(["foo", 424242, {}], p3["string"])
+  # end
+
+
+  def p4
+    Proc.new do |str: "foo", num: 424242, **h, &blk|
+      [str, num, h, blk]
+    end
+  end
+
+  def test_p4
+    assert_equal(["foo", 424242, {}, nil], p4[])
+    assert_equal(["bar", 424242, {}, nil], p4[str: "bar"])
+    assert_equal(["foo", 111111, {}, nil], p4[num: 111111])
+    assert_equal(["bar", 111111, {}, nil], p4[str: "bar", num: 111111])
+    assert_equal(["bar", 424242, {:check=>true}, nil], p4[str: "bar", check: true])
+    a = p4.call {|x| x + 42 }
+    assert_equal(["foo", 424242, {}], a[0, 3])
+    assert_equal(43, a.last.call(1))
+  end
+
+
+  def p5
+    Proc.new do |*r, str: "foo", num: 424242, **h|
+      [r, str, num, h]
+    end
+  end
+
+  def test_p5
+    assert_equal([[], "foo", 424242, {}], p5[])
+    assert_equal([[], "bar", 424242, {}], p5[str: "bar"])
+    assert_equal([[], "foo", 111111, {}], p5[num: 111111])
+    assert_equal([[], "bar", 111111, {}], p5[str: "bar", num: 111111])
+    assert_equal([[1], "foo", 424242, {}], p5[1])
+    assert_equal([[1, 2], "foo", 424242, {}], p5[1, 2])
+    assert_equal([[1, 2, 3], "foo", 424242, {}], p5[1, 2, 3])
+    assert_equal([[1], "bar", 424242, {}], p5[1, str: "bar"])
+    assert_equal([[1, 2], "bar", 424242, {}], p5[1, 2, str: "bar"])
+    assert_equal([[1, 2, 3], "bar", 424242, {}], p5[1, 2, 3, str: "bar"])
+  end
+
+
+  # def p6
+  #   Proc.new do |o1, o2=42, *args, p, k: :key, **kw, &b|
+  #     [o1, o2, args, p, k, kw, b]
+  #   end
+  # end
+  #
+  # def test_p6
+  #   assert_equal([nil, 42, [], nil, :key, {}, nil], p6[])
+  #   assert_equal([1, 42, [], 2, :key, {}, nil], p6[1, 2])
+  #   assert_equal([1, 2, [], 3, :key, {}, nil], p6[1, 2, 3])
+  #   assert_equal([1, 2, [3], 4, :key, {}, nil], p6[1, 2, 3, 4])
+  #   assert_equal([1, 2, [3, 4], 5, :key, {str: "bar"}, nil], p6[1, 2, 3, 4, 5, str: "bar"])
+  # end
+  #
+  # def test_proc_parameters
+  #   assert_equal([[:key, :str], [:key, :num]], p1.parameters);
+  #   assert_equal([[:opt, :x], [:key, :str], [:key, :num]], p2.parameters);
+  #   assert_equal([[:key, :str], [:key, :num], [:keyrest, :h]], p3.parameters);
+  #   assert_equal([[:key, :str], [:key, :num], [:keyrest, :h], [:block, :blk]], p4.parameters);
+  #   assert_equal([[:rest, :r], [:key, :str], [:key, :num], [:keyrest, :h]], p5.parameters);
+  #   assert_equal([[:opt, :o1], [:opt, :o2], [:rest, :args], [:opt, :p], [:key, :k],
+  #                 [:keyrest, :kw], [:block, :b]], p6.parameters)
+  # end
+
+  def m1(*args)
+    yield(*args)
+  end
+
+  def test_block
+    blk = Proc.new {|str: "foo", num: 424242| [str, num] }
+    assert_equal(["foo", 424242], m1(&blk))
+    assert_equal(["bar", 424242], m1(str: "bar", &blk))
+    assert_equal(["foo", 111111], m1(num: 111111, &blk))
+    assert_equal(["bar", 111111], m1(str: "bar", num: 111111, &blk))
+  end
+
+  # def rest_keyrest(*args, **opt)
+  #   return *args, opt
+  # end
+  #
+  # def test_rest_keyrest
+  #   bug7665 = '[ruby-core:51278]'
+  #   bug8463 = '[ruby-core:55203] [Bug #8463]'
+  #   expect = [*%w[foo bar], {zzz: 42}]
+  #   assert_equal(expect, rest_keyrest(*expect), bug7665)
+  #   pr = proc {|*args, **opt| next *args, opt}
+  #   assert_equal(expect, pr.call(*expect), bug7665)
+  #   assert_equal(expect, pr.call(expect), bug8463)
+  #   pr = proc {|a, *b, **opt| next a, *b, opt}
+  #   assert_equal(expect, pr.call(expect), bug8463)
+  #   pr = proc {|a, **opt| next a, opt}
+  #   assert_equal(expect.values_at(0, -1), pr.call(expect), bug8463)
+  # end
+
+  def test_bare_kwrest
+    skip "NoMethodError: undefined method `assert_valid_syntax' for TestKeywordArguments#test_bare_kwrest"
+    # valid syntax, but its semantics is undefined
+    assert_valid_syntax("def bug7662(**) end")
+    assert_valid_syntax("def bug7662(*, **) end")
+    assert_valid_syntax("def bug7662(a, **) end")
+  end
+
+  def test_without_paren
+    skip %{NoMethodError: undefined method `assert_valid_syntax' for TestKeywordArguments#test_without_paren}
+
+    bug7942 = '[ruby-core:52820] [Bug #7942]'
+    assert_valid_syntax("def bug7942 a: 1; end")
+    assert_valid_syntax("def bug7942 a: 1, **; end")
+
+    o = Object.new
+    eval("def o.bug7942 a: 1; a; end", nil, __FILE__, __LINE__)
+    assert_equal(1, o.bug7942(), bug7942)
+    assert_equal(42, o.bug7942(a: 42), bug7942)
+
+    o = Object.new
+    eval("def o.bug7942 a: 1, **; a; end", nil, __FILE__, __LINE__)
+    assert_equal(1, o.bug7942(), bug7942)
+    assert_equal(42, o.bug7942(a: 42), bug7942)
+  end
+
+  def test_required_keyword
+    skip %{ArgumentError: [TestKeywordArguments#eval] wrong number of arguments(3 for 1)}
+
+    feature7701 = '[ruby-core:51454] [Feature #7701] required keyword argument'
+    o = Object.new
+    assert_nothing_raised(SyntaxError, feature7701) do
+      eval("def o.foo(a:) a; end", nil, "xyzzy")
+      eval("def o.bar(a:,**b) [a, b]; end")
+    end
+    assert_raise_with_message(ArgumentError, /missing keyword/, feature7701) {o.foo}
+    assert_raise_with_message(ArgumentError, /unknown keyword/, feature7701) {o.foo(a:0, b:1)}
+    begin
+      o.foo(a: 0, b: 1)
+    rescue => e
+      assert_equal('xyzzy', e.backtrace_locations[0].path)
+    end
+    assert_equal(42, o.foo(a: 42), feature7701)
+    assert_equal([[:keyreq, :a]], o.method(:foo).parameters, feature7701)
+
+    bug8139 = '[ruby-core:53608] [Bug #8139] required keyword argument with rest hash'
+    assert_equal([42, {}], o.bar(a: 42), feature7701)
+    assert_equal([42, {c: feature7701}], o.bar(a: 42, c: feature7701), feature7701)
+    assert_equal([[:keyreq, :a], [:keyrest, :b]], o.method(:bar).parameters, feature7701)
+    assert_raise_with_message(ArgumentError, /missing keyword/, bug8139) {o.bar(c: bug8139)}
+    assert_raise_with_message(ArgumentError, /missing keyword/, bug8139) {o.bar}
+  end
+
+  # def test_required_keyword_with_newline
+  #   bug9669 = '[ruby-core:61658] [Bug #9669]'
+  #   assert_nothing_raised(SyntaxError, bug9669) do
+  #     eval(<<-'end;', nil, __FILE__, __LINE__)
+  #       def bug9669.foo a:
+  #         return a
+  #       end
+  #     end;
+  #   end
+  #   assert_equal(42, bug9669.foo(a: 42))
+  #   o = nil
+  #   assert_nothing_raised(SyntaxError, bug9669) do
+  #     eval(<<-'end;', nil, __FILE__, __LINE__)
+  #       o = {
+  #         a:
+  #         1
+  #       }
+  #     end;
+  #   end
+  #   assert_equal({a: 1}, o, bug9669)
+  # end
+  #
+  # def test_required_keyword_with_reserved
+  #   bug10279 = '[ruby-core:65211] [Bug #10279]'
+  #   h = nil
+  #   assert_nothing_raised(SyntaxError, bug10279) do
+  #     break eval(<<-'end;', nil, __FILE__, __LINE__)
+  #       h = {a: if true then 42 end}
+  #     end;
+  #   end
+  #   assert_equal({a: 42}, h, bug10279)
+  # end
+
+  def test_block_required_keyword
+    skip "ArgumentError: [TestKeywordArguments#eval] wrong number of arguments(4 for 1)"
+
+    feature7701 = '[ruby-core:51454] [Feature #7701] required keyword argument'
+    b = assert_nothing_raised(SyntaxError, feature7701) do
+      break eval("proc {|a:| a}", nil, 'xyzzy', __LINE__)
+    end
+    assert_raise_with_message(ArgumentError, /missing keyword/, feature7701) {b.call}
+    assert_raise_with_message(ArgumentError, /unknown keyword/, feature7701) {b.call(a:0, b:1)}
+    begin
+      b.call(a: 0, b: 1)
+    rescue => e
+      assert_equal('xyzzy', e.backtrace_locations[0].path)
+    end
+
+    assert_equal(42, b.call(a: 42), feature7701)
+    assert_equal([[:keyreq, :a]], b.parameters, feature7701)
+
+    bug8139 = '[ruby-core:53608] [Bug #8139] required keyword argument with rest hash'
+    b = assert_nothing_raised(SyntaxError, feature7701) do
+      break eval("proc {|a:, **bl| [a, bl]}", nil, __FILE__, __LINE__)
+    end
+    assert_equal([42, {}], b.call(a: 42), feature7701)
+    assert_equal([42, {c: feature7701}], b.call(a: 42, c: feature7701), feature7701)
+    assert_equal([[:keyreq, :a], [:keyrest, :bl]], b.parameters, feature7701)
+    assert_raise_with_message(ArgumentError, /missing keyword/, bug8139) {b.call(c: bug8139)}
+    assert_raise_with_message(ArgumentError, /missing keyword/, bug8139) {b.call}
+  end
+
+  def test_super_with_keyword
+    skip %{NoMethodError: undefined method `encode' for "[42, {\"bar\"=>\"x\"}]":String}
+    bug8236 = '[ruby-core:54094] [Bug #8236]'
+    base = Class.new do
+      def foo(*args)
+        args
+      end
+    end
+    a = Class.new(base) do
+      def foo(arg, bar: 'x')
+        super
+      end
+    end
+    b = Class.new(base) do
+      def foo(*args, bar: 'x')
+        super
+      end
+    end
+    assert_equal([42, {:bar=>"x"}], a.new.foo(42), bug8236)
+    assert_equal([42, {:bar=>"x"}], b.new.foo(42), bug8236)
+  end
+
+  def test_zsuper_only_named_kwrest
+    bug8416 = '[ruby-core:55033] [Bug #8416]'
+    base = Class.new do
+      def foo(**h)
+        h
+      end
+    end
+    a = Class.new(base) do
+      def foo(**h)
+        super
+      end
+    end
+    assert_equal({:bar=>"x"}, a.new.foo(bar: "x"), bug8416)
+  end
+
+  def test_zsuper_only_anonymous_kwrest
+    bug8416 = '[ruby-core:55033] [Bug #8416]'
+    base = Class.new do
+      def foo(**h)
+        h
+      end
+    end
+    a = Class.new(base) do
+      def foo(**)
+        super
+      end
+    end
+    assert_equal({:bar=>"x"}, a.new.foo(bar: "x"), bug8416)
+  end
+
+  def test_precedence_of_keyword_arguments
+    bug8040 = '[ruby-core:53199] [Bug #8040]'
+    a = Class.new do
+      def foo(x, **h)
+        [x, h]
+      end
+    end
+    assert_equal([{}, {}], a.new.foo({}))
+    assert_equal([{}, {:bar=>"x"}], a.new.foo({}, bar: "x"), bug8040)
+  end
+
+  # def test_precedence_of_keyword_arguments_with_post_argument
+  #   bug8993 = '[ruby-core:57706] [Bug #8993]'
+  #   a = Class.new do
+  #     def foo(a, b, c=1, *d, e, f:2, **g)
+  #       [a, b, c, d, e, f, g]
+  #     end
+  #   end
+  #   assert_equal([1, 2, 1, [], {:f=>5}, 2, {}], a.new.foo(1, 2, f:5), bug8993)
+  # end
+  #
+  # def test_splat_keyword_nondestructive
+  #   bug9776 = '[ruby-core:62161] [Bug #9776]'
+  #
+  #   h = {a: 1}
+  #   assert_equal({a:1, b:2}, {**h, b:2})
+  #   assert_equal({a:1}, h, bug9776)
+  #
+  #   pr = proc {|**opt| next opt}
+  #   assert_equal({a: 1}, pr.call(**h))
+  #   assert_equal({a: 1, b: 2}, pr.call(**h, b: 2))
+  #   assert_equal({a: 1}, h, bug9776)
+  # end
+  #
+  # def test_splat_hash_conversion
+  #   bug9898 = '[ruby-core:62921] [Bug #9898]'
+  #
+  #   o = Object.new
+  #   def o.to_hash() { a: 1 } end
+  #   assert_equal({a: 1}, m1(**o) {|x| break x}, bug9898)
+  #   o2 = Object.new
+  #   def o2.to_hash() { b: 2 } end
+  #   assert_equal({a: 1, b: 2}, m1(**o, **o2) {|x| break x}, bug9898)
+  # end
+  #
+  # def test_implicit_hash_conversion
+  #   bug10016 = '[ruby-core:63593] [Bug #10016]'
+  #
+  #   o = Object.new
+  #   def o.to_hash() { k: 9 } end
+  #   assert_equal([1, 42, [], o, :key, {}, nil], f9(1, o))
+  #   assert_equal([1, 9], m1(1, o) {|a, k: 0| break [a, k]}, bug10016)
+  #   assert_equal([1, 9], m1(1, o, &->(a, k: 0) {break [a, k]}), bug10016)
+  # end
+  #
+  # def test_gced_object_in_stack
+  #   bug8964 = '[ruby-dev:47729] [Bug #8964]'
+  #   assert_normal_exit %q{
+  #     def m(a: [])
+  #     end
+  #     GC.stress = true
+  #     tap { m }
+  #     GC.start
+  #     tap { m }
+  #   }, bug8964
+  #   assert_normal_exit %q{
+  #     prc = Proc.new {|a: []|}
+  #     GC.stress = true
+  #     tap { prc.call }
+  #     GC.start
+  #     tap { prc.call }
+  #   }, bug8964
+  # end
+  #
+  # def test_dynamic_symbol_keyword
+  #   bug10266 = '[ruby-dev:48564] [Bug #10266]'
+  #   assert_separately(['-', bug10266], <<-'end;') #    do
+  #     bug = ARGV.shift
+  #     "hoge".to_sym
+  #     assert_nothing_raised(bug) {eval("def a(hoge:); end")}
+  #   end;
+  # end
+  #
+  # def test_unknown_keyword_with_block
+  #   bug10413 = '[ruby-core:65837] [Bug #10413]'
+  #   class << (o = Object.new)
+  #     def bar(k2: 'v2')
+  #     end
+  #
+  #     def foo
+  #       bar(k1: 1)
+  #     end
+  #   end
+  #   assert_raise_with_message(ArgumentError, /unknown keyword: k1/, bug10413) {
+  #     o.foo {raise "unreachable"}
+  #   }
+  # end
+  #
+  # def test_super_with_anon_restkeywords
+  #   bug10659 = '[ruby-core:67157] [Bug #10659]'
+  #
+  #   foo = Class.new do
+  #     def foo(**h)
+  #       h
+  #     end
+  #   end
+  #
+  #   class << (obj = foo.new)
+  #     def foo(bar: "bar", **)
+  #       super
+  #     end
+  #   end
+  #
+  #   assert_nothing_raised(TypeError, bug10659) {
+  #     assert_equal({:bar => "bar"}, obj.foo, bug10659)
+  #   }
+  # end
+
+  def m(a) yield a end
+
+  # def test_nonsymbol_key
+  #   result = m(["a" => 10]) { |a = nil, **b| [a, b] }
+  #   assert_equal([{"a" => 10}, {}], result)
+  # end
+
+  def method_for_test_to_hash_call_during_setup_complex_parameters k1:, k2:, **rest_kw
+    [k1, k2, rest_kw]
+  end
+
+  def test_to_hash_call_during_setup_complex_parameters
+    sym = "sym_#{Time.now}".to_sym
+    h = method_for_test_to_hash_call_during_setup_complex_parameters k1: "foo", k2: "bar", sym => "baz"
+    assert_equal ["foo", "bar", {sym => "baz"}], h, '[Bug #11027]'
+  end
+end
diff --git a/test/opal/test_matrix.rb b/test/opal/test_matrix.rb
new file mode 100644
index 00000000..5f6c93bb
--- /dev/null
+++ b/test/opal/test_matrix.rb
@@ -0,0 +1,661 @@
+# frozen_string_literal: false
+require 'test/unit'
+require 'matrix'
+
+class SubMatrix < Matrix
+end
+
+class TestMatrix < Test::Unit::TestCase
+  def setup
+    @m1 = Matrix[[1,2,3], [4,5,6]]
+    @m2 = Matrix[[1,2,3], [4,5,6]]
+    @m3 = @m1.clone
+    @m4 = Matrix[[1.0, 2.0, 3.0], [4.0, 5.0, 6.0]]
+    @n1 = Matrix[[2,3,4], [5,6,7]]
+    @c1 = Matrix[[Complex(1,2), Complex(0,1), 0], [1, 2, 3]]
+    @e1 = Matrix.empty(2,0)
+    @e2 = Matrix.empty(0,3)
+    @a3  = Matrix[[4, 1, -3], [0, 3, 7], [11, -4, 2]]
+    @a5  = Matrix[[2, 0, 9, 3, 9], [8, 7, 0, 1, 9], [7, 5, 6, 6, 5], [0, 7, 8, 3, 0], [7, 8, 2, 3, 1]]
+    @b3  = Matrix[[-7, 7, -10], [9, -3, -2], [-1, 3, 9]]
+  end
+
+  def test_matrix
+    assert_equal(1, @m1[0, 0])
+    assert_equal(2, @m1[0, 1])
+    assert_equal(3, @m1[0, 2])
+    assert_equal(4, @m1[1, 0])
+    assert_equal(5, @m1[1, 1])
+    assert_equal(6, @m1[1, 2])
+  end
+
+  def test_identity
+    assert_same @m1, @m1
+    # Replaced
+    #   assert_not_same obj1, obj2
+    # to supported equivalent
+    #   assert !obj1.equal?(obj2)
+    assert !@m1.equal?(@m2)
+    assert !@m1.equal?(@m3)
+    assert !@m1.equal?(@m4)
+    assert !@m1.equal?(@n1)
+  end
+
+  def test_equality
+    assert_equal @m1, @m1
+    assert_equal @m1, @m2
+    assert_equal @m1, @m3
+    assert_equal @m1, @m4
+    assert_not_equal @m1, @n1
+  end
+
+  def test_hash_equality
+    assert @m1.eql?(@m1)
+    assert @m1.eql?(@m2)
+    assert @m1.eql?(@m3)
+    # Fails because of expected difference between 1 and 1.0
+    # assert !@m1.eql?(@m4)
+    assert !@m1.eql?(@n1)
+
+    hash = { @m1 => :value }
+    assert hash.key?(@m1)
+    assert hash.key?(@m2)
+    assert hash.key?(@m3)
+    # Fails because of expected difference between 1 and 1.0
+    # assert !hash.key?(@m4)
+    assert !hash.key?(@n1)
+  end
+
+  def test_hash
+    assert_equal @m1.hash, @m1.hash
+    assert_equal @m1.hash, @m2.hash
+    assert_equal @m1.hash, @m3.hash
+  end
+
+  def test_uplus
+    assert_equal(@m1, +@m1)
+  end
+
+  def test_negate
+    assert_equal(Matrix[[-1, -2, -3], [-4, -5, -6]], -@m1)
+    assert_equal(@m1, -(-@m1))
+  end
+
+  def test_rank
+    [
+      [[0]],
+      [[0], [0]],
+      [[0, 0], [0, 0]],
+      [[0, 0], [0, 0], [0, 0]],
+      [[0, 0, 0]],
+      [[0, 0, 0], [0, 0, 0]],
+      [[0, 0, 0], [0, 0, 0], [0, 0, 0]],
+      [[0, 0, 0], [0, 0, 0], [0, 0, 0], [0, 0, 0]],
+    ].each do |rows|
+      assert_equal 0, Matrix[*rows].rank
+    end
+
+    [
+      [[1], [0]],
+      [[1, 0], [0, 0]],
+      [[1, 0], [1, 0]],
+      [[0, 0], [1, 0]],
+      [[1, 0], [0, 0], [0, 0]],
+      [[0, 0], [1, 0], [0, 0]],
+      [[0, 0], [0, 0], [1, 0]],
+      [[1, 0], [1, 0], [0, 0]],
+      [[0, 0], [1, 0], [1, 0]],
+      [[1, 0], [1, 0], [1, 0]],
+      [[1, 0, 0]],
+      [[1, 0, 0], [0, 0, 0]],
+      [[0, 0, 0], [1, 0, 0]],
+      [[1, 0, 0], [1, 0, 0]],
+      [[1, 0, 0], [1, 0, 0]],
+      [[1, 0, 0], [0, 0, 0], [0, 0, 0]],
+      [[0, 0, 0], [1, 0, 0], [0, 0, 0]],
+      [[0, 0, 0], [0, 0, 0], [1, 0, 0]],
+      [[1, 0, 0], [1, 0, 0], [0, 0, 0]],
+      [[0, 0, 0], [1, 0, 0], [1, 0, 0]],
+      [[1, 0, 0], [0, 0, 0], [1, 0, 0]],
+      [[1, 0, 0], [1, 0, 0], [1, 0, 0]],
+      [[1, 0, 0], [0, 0, 0], [0, 0, 0], [0, 0, 0]],
+      [[1, 0, 0], [0, 0, 0], [0, 0, 0], [0, 0, 0]],
+      [[1, 0, 0], [1, 0, 0], [0, 0, 0], [0, 0, 0]],
+      [[1, 0, 0], [0, 0, 0], [1, 0, 0], [0, 0, 0]],
+      [[1, 0, 0], [0, 0, 0], [0, 0, 0], [1, 0, 0]],
+      [[1, 0, 0], [1, 0, 0], [1, 0, 0], [0, 0, 0]],
+      [[1, 0, 0], [0, 0, 0], [1, 0, 0], [1, 0, 0]],
+      [[1, 0, 0], [1, 0, 0], [0, 0, 0], [1, 0, 0]],
+      [[1, 0, 0], [1, 0, 0], [1, 0, 0], [1, 0, 0]],
+
+      [[1]],
+      [[1], [1]],
+      [[1, 1]],
+      [[1, 1], [1, 1]],
+      [[1, 1], [1, 1], [1, 1]],
+      [[1, 1, 1]],
+      [[1, 1, 1], [1, 1, 1]],
+      [[1, 1, 1], [1, 1, 1], [1, 1, 1]],
+      [[1, 1, 1], [1, 1, 1], [1, 1, 1], [1, 1, 1]],
+    ].each do |rows|
+      matrix = Matrix[*rows]
+      assert_equal 1, matrix.rank
+      assert_equal 1, matrix.transpose.rank
+    end
+
+    [
+      [[1, 0], [0, 1]],
+      [[1, 0], [0, 1], [0, 0]],
+      [[1, 0], [0, 1], [0, 1]],
+      [[1, 0], [0, 1], [1, 1]],
+      [[1, 0, 0], [0, 1, 0]],
+      [[1, 0, 0], [0, 0, 1]],
+      [[1, 0, 0], [0, 1, 0], [0, 0, 0]],
+      [[1, 0, 0], [0, 0, 1], [0, 0, 0]],
+
+      [[1, 0, 0], [0, 0, 0], [0, 1, 0]],
+      [[1, 0, 0], [0, 0, 0], [0, 0, 1]],
+
+      [[1, 0], [1, 1]],
+      [[1, 2], [1, 1]],
+      [[1, 2], [0, 1], [1, 1]],
+    ].each do |rows|
+      m = Matrix[*rows]
+      assert_equal 2, m.rank
+      assert_equal 2, m.transpose.rank
+    end
+
+    [
+      [[1, 0, 0], [0, 1, 0], [0, 0, 1]],
+      [[1, 1, 0], [0, 1, 1], [1, 0, 1]],
+      [[1, 1, 0], [0, 1, 1], [1, 0, 1]],
+      [[1, 1, 0], [0, 1, 1], [1, 0, 1], [0, 0, 0]],
+      [[1, 1, 0], [0, 1, 1], [1, 0, 1], [1, 1, 1]],
+      [[1, 1, 1], [1, 1, 2], [1, 3, 1], [4, 1, 1]],
+    ].each do |rows|
+      m = Matrix[*rows]
+      assert_equal 3, m.rank
+      assert_equal 3, m.transpose.rank
+    end
+  end
+
+  def test_inverse
+    assert_equal(Matrix.empty(0, 0), Matrix.empty.inverse)
+    assert_equal(Matrix[[-1, 1], [0, -1]], Matrix[[-1, -1], [0, -1]].inverse)
+    assert_raise(ExceptionForMatrix::ErrDimensionMismatch) { @m1.inverse }
+  end
+
+  def test_determinant
+    assert_equal(0, Matrix[[0,0],[0,0]].determinant)
+    assert_equal(45, Matrix[[7,6], [3,9]].determinant)
+    assert_equal(-18, Matrix[[2,0,1],[0,-2,2],[1,2,3]].determinant)
+    assert_equal(-7, Matrix[[0,0,1],[0,7,6],[1,3,9]].determinant)
+    assert_equal(42, Matrix[[7,0,1,0,12],[8,1,1,9,1],[4,0,0,-7,17],[-1,0,0,-4,8],[10,1,1,8,6]].determinant)
+  end
+
+  def test_new_matrix
+    assert_raise(TypeError) { Matrix[Object.new] }
+    o = Object.new
+    def o.to_ary; [1,2,3]; end
+    assert_equal(@m1, Matrix[o, [4,5,6]])
+  end
+
+  def test_round
+    a = Matrix[[1.0111, 2.32320, 3.04343], [4.81, 5.0, 6.997]]
+    b = Matrix[[1.01, 2.32, 3.04], [4.81, 5.0, 7.0]]
+    assert_equal(a.round(2), b)
+  end
+
+  def test_rows
+    assert_equal(@m1, Matrix.rows([[1, 2, 3], [4, 5, 6]]))
+  end
+
+  def test_rows_copy
+    rows1 = [[1], [1]]
+    rows2 = [[1], [1]]
+
+    m1 = Matrix.rows(rows1, copy = false)
+    m2 = Matrix.rows(rows2, copy = true)
+
+    rows1.uniq!
+    rows2.uniq!
+
+    assert_equal([[1]],      m1.to_a)
+    assert_equal([[1], [1]], m2.to_a)
+  end
+
+  def test_to_matrix
+    assert @m1.equal? @m1.to_matrix
+  end
+
+  def test_columns
+    assert_equal(@m1, Matrix.columns([[1, 4], [2, 5], [3, 6]]))
+  end
+
+  def test_diagonal
+    assert_equal(Matrix.empty(0, 0), Matrix.diagonal( ))
+    assert_equal(Matrix[[3,0,0],[0,2,0],[0,0,1]], Matrix.diagonal(3, 2, 1))
+    assert_equal(Matrix[[4,0,0,0],[0,3,0,0],[0,0,2,0],[0,0,0,1]], Matrix.diagonal(4, 3, 2, 1))
+  end
+
+  def test_scalar
+    assert_equal(Matrix.empty(0, 0), Matrix.scalar(0, 1))
+    assert_equal(Matrix[[2,0,0],[0,2,0],[0,0,2]], Matrix.scalar(3, 2))
+    assert_equal(Matrix[[2,0,0,0],[0,2,0,0],[0,0,2,0],[0,0,0,2]], Matrix.scalar(4, 2))
+  end
+
+  def test_identity2
+    assert_equal(Matrix[[1,0,0],[0,1,0],[0,0,1]], Matrix.identity(3))
+    assert_equal(Matrix[[1,0,0],[0,1,0],[0,0,1]], Matrix.unit(3))
+    assert_equal(Matrix[[1,0,0],[0,1,0],[0,0,1]], Matrix.I(3))
+    assert_equal(Matrix[[1,0,0,0],[0,1,0,0],[0,0,1,0],[0,0,0,1]], Matrix.identity(4))
+  end
+
+  def test_zero
+    assert_equal(Matrix[[0,0,0],[0,0,0],[0,0,0]], Matrix.zero(3))
+    assert_equal(Matrix[[0,0,0,0],[0,0,0,0],[0,0,0,0],[0,0,0,0]], Matrix.zero(4))
+    assert_equal(Matrix[[0]], Matrix.zero(1))
+  end
+
+  def test_row_vector
+    assert_equal(Matrix[[1,2,3,4]], Matrix.row_vector([1,2,3,4]))
+  end
+
+  def test_column_vector
+    assert_equal(Matrix[[1],[2],[3],[4]], Matrix.column_vector([1,2,3,4]))
+  end
+
+  def test_empty
+    m = Matrix.empty(2, 0)
+    assert_equal(Matrix[ [], [] ], m)
+    n = Matrix.empty(0, 3)
+    assert_equal(Matrix.columns([ [], [], [] ]), n)
+    assert_equal(Matrix[[0, 0, 0], [0, 0, 0]], m * n)
+  end
+
+  def test_row
+    assert_equal(Vector[1, 2, 3], @m1.row(0))
+    assert_equal(Vector[4, 5, 6], @m1.row(1))
+    a = []; @m1.row(0) {|x| a << x }
+    assert_equal([1, 2, 3], a)
+  end
+
+  def test_column
+    assert_equal(Vector[1, 4], @m1.column(0))
+    assert_equal(Vector[2, 5], @m1.column(1))
+    assert_equal(Vector[3, 6], @m1.column(2))
+    a = []; @m1.column(0) {|x| a << x }
+    assert_equal([1, 4], a)
+  end
+
+  def test_collect
+    assert_equal(Matrix[[1, 4, 9], [16, 25, 36]], @m1.collect {|x| x ** 2 })
+  end
+
+  def test_minor
+    assert_equal(Matrix[[1, 2], [4, 5]], @m1.minor(0..1, 0..1))
+    assert_equal(Matrix[[2], [5]], @m1.minor(0..1, 1..1))
+    assert_equal(Matrix[[4, 5]], @m1.minor(1..1, 0..1))
+    assert_equal(Matrix[[1, 2], [4, 5]], @m1.minor(0, 2, 0, 2))
+    assert_equal(Matrix[[4, 5]], @m1.minor(1, 1, 0, 2))
+    assert_equal(Matrix[[2], [5]], @m1.minor(0, 2, 1, 1))
+    assert_raise(ArgumentError) { @m1.minor(0) }
+  end
+
+  def test_first_minor
+    assert_equal(Matrix.empty(0, 0), Matrix[[1]].first_minor(0, 0))
+    assert_equal(Matrix.empty(0, 2), Matrix[[1, 4, 2]].first_minor(0, 1))
+    assert_equal(Matrix[[1, 3]], @m1.first_minor(1, 1))
+    assert_equal(Matrix[[4, 6]], @m1.first_minor(0, 1))
+    assert_equal(Matrix[[1, 2]], @m1.first_minor(1, 2))
+    assert_raise(RuntimeError) { Matrix.empty(0, 0).first_minor(0, 0) }
+    assert_raise(ArgumentError) { @m1.first_minor(4, 0) }
+    assert_raise(ArgumentError) { @m1.first_minor(0, -1) }
+    assert_raise(ArgumentError) { @m1.first_minor(-1, 4) }
+  end
+
+  def test_cofactor
+    assert_equal(1, Matrix[[1]].cofactor(0, 0))
+    assert_equal(9, Matrix[[7,6],[3,9]].cofactor(0, 0))
+    assert_equal(0, Matrix[[0,0],[0,0]].cofactor(0, 0))
+    assert_equal(3, Matrix[[0,0,1],[0,7,6],[1,3,9]].cofactor(1, 0))
+    assert_equal(-21, Matrix[[7,0,1,0,12],[8,1,1,9,1],[4,0,0,-7,17],[-1,0,0,-4,8],[10,1,1,8,6]].cofactor(2, 3))
+    assert_raise(RuntimeError) { Matrix.empty(0, 0).cofactor(0, 0) }
+    assert_raise(ArgumentError) { Matrix[[0,0],[0,0]].cofactor(-1, 4) }
+    assert_raise(ExceptionForMatrix::ErrDimensionMismatch) { Matrix[[2,0,1],[0,-2,2]].cofactor(0, 0) }
+  end
+
+  def test_adjugate
+    assert_equal(Matrix.empty, Matrix.empty.adjugate)
+    assert_equal(Matrix[[1]], Matrix[[5]].adjugate)
+    assert_equal(Matrix[[9,-6],[-3,7]], Matrix[[7,6],[3,9]].adjugate)
+    assert_equal(Matrix[[45,3,-7],[6,-1,0],[-7,0,0]], Matrix[[0,0,1],[0,7,6],[1,3,9]].adjugate)
+    assert_equal(Matrix.identity(5), (@a5.adjugate * @a5) / (@a5.det))
+    assert_equal(Matrix.I(3), Matrix.I(3).adjugate)
+    assert_equal((@a3 * @b3).adjugate, @b3.adjugate * @a3.adjugate)
+    assert_equal(4**(@a3.row_count-1) * @a3.adjugate, (4 * @a3).adjugate)
+    assert_raise(ExceptionForMatrix::ErrDimensionMismatch) { @m1.adjugate }
+  end
+
+  def test_laplace_expansion
+    assert_equal(1, Matrix[[1]].laplace_expansion(row: 0))
+    assert_equal(45, Matrix[[7,6], [3,9]].laplace_expansion(row: 1))
+    assert_equal(0, Matrix[[0,0],[0,0]].laplace_expansion(column: 0))
+    assert_equal(-7, Matrix[[0,0,1],[0,7,6],[1,3,9]].laplace_expansion(column: 2))
+
+    assert_equal(Vector[3, -2], Matrix[[Vector[1, 0], Vector[0, 1]], [2, 3]].laplace_expansion(row: 0))
+
+    assert_raise(ExceptionForMatrix::ErrDimensionMismatch) { @m1.laplace_expansion(row: 1) }
+    assert_raise(ArgumentError) { Matrix[[7,6], [3,9]].laplace_expansion() }
+    assert_raise(ArgumentError) { Matrix[[7,6], [3,9]].laplace_expansion(foo: 1) }
+    assert_raise(ArgumentError) { Matrix[[7,6], [3,9]].laplace_expansion(row: 1, column: 1) }
+    assert_raise(ArgumentError) { Matrix[[7,6], [3,9]].laplace_expansion(row: 2) }
+    assert_raise(ArgumentError) { Matrix[[0,0,1],[0,7,6],[1,3,9]].laplace_expansion(column: -1) }
+
+    assert_raise(RuntimeError) { Matrix.empty(0, 0).laplace_expansion(row: 0) }
+  end
+
+  def test_regular?
+    assert(Matrix[[1, 0], [0, 1]].regular?)
+    assert(Matrix[[1, 0, 0], [0, 1, 0], [0, 0, 1]].regular?)
+    assert(!Matrix[[1, 0, 0], [0, 0, 1], [0, 0, 1]].regular?)
+  end
+
+  def test_singular?
+    assert(!Matrix[[1, 0], [0, 1]].singular?)
+    assert(!Matrix[[1, 0, 0], [0, 1, 0], [0, 0, 1]].singular?)
+    assert(Matrix[[1, 0, 0], [0, 0, 1], [0, 0, 1]].singular?)
+  end
+
+  def test_square?
+    assert(Matrix[[1, 0], [0, 1]].square?)
+    assert(Matrix[[1, 0, 0], [0, 1, 0], [0, 0, 1]].square?)
+    assert(Matrix[[1, 0, 0], [0, 0, 1], [0, 0, 1]].square?)
+    assert(!Matrix[[1, 0, 0], [0, 1, 0]].square?)
+  end
+
+  def test_mul
+    assert_equal(Matrix[[2,4],[6,8]], Matrix[[2,4],[6,8]] * Matrix.I(2))
+    assert_equal(Matrix[[4,8],[12,16]], Matrix[[2,4],[6,8]] * 2)
+    assert_equal(Matrix[[4,8],[12,16]], 2 * Matrix[[2,4],[6,8]])
+    assert_equal(Matrix[[14,32],[32,77]], @m1 * @m1.transpose)
+    assert_equal(Matrix[[17,22,27],[22,29,36],[27,36,45]], @m1.transpose * @m1)
+    assert_equal(Vector[14,32], @m1 * Vector[1,2,3])
+    o = Object.new
+    def o.coerce(m)
+      [m, m.transpose]
+    end
+    assert_equal(Matrix[[14,32],[32,77]], @m1 * o)
+  end
+
+  def test_add
+    assert_equal(Matrix[[6,0],[-4,12]], Matrix.scalar(2,5) + Matrix[[1,0],[-4,7]])
+    assert_equal(Matrix[[3,5,7],[9,11,13]], @m1 + @n1)
+    assert_equal(Matrix[[3,5,7],[9,11,13]], @n1 + @m1)
+    assert_equal(Matrix[[2],[4],[6]], Matrix[[1],[2],[3]] + Vector[1,2,3])
+    assert_raise(Matrix::ErrOperationNotDefined) { @m1 + 1 }
+    o = Object.new
+    def o.coerce(m)
+      [m, m]
+    end
+    assert_equal(Matrix[[2,4,6],[8,10,12]], @m1 + o)
+  end
+
+  def test_sub
+    assert_equal(Matrix[[4,0],[4,-2]], Matrix.scalar(2,5) - Matrix[[1,0],[-4,7]])
+    assert_equal(Matrix[[-1,-1,-1],[-1,-1,-1]], @m1 - @n1)
+    assert_equal(Matrix[[1,1,1],[1,1,1]], @n1 - @m1)
+    assert_equal(Matrix[[0],[0],[0]], Matrix[[1],[2],[3]] - Vector[1,2,3])
+    assert_raise(Matrix::ErrOperationNotDefined) { @m1 - 1 }
+    o = Object.new
+    def o.coerce(m)
+      [m, m]
+    end
+    assert_equal(Matrix[[0,0,0],[0,0,0]], @m1 - o)
+  end
+
+  def test_div
+    # Fails because in Opal 1 / 2 = 0.5
+    # assert_equal(Matrix[[0,1,1],[2,2,3]], @m1 / 2)
+    assert_equal(Matrix[[1,1],[1,1]], Matrix[[2,2],[2,2]] / Matrix.scalar(2,2))
+    o = Object.new
+    def o.coerce(m)
+      [m, Matrix.scalar(2,2)]
+    end
+    assert_equal(Matrix[[1,1],[1,1]], Matrix[[2,2],[2,2]] / o)
+  end
+
+  def test_hadamard_product
+    assert_equal(Matrix[[1,4], [9,16]], Matrix[[1,2], [3,4]].hadamard_product(Matrix[[1,2], [3,4]]))
+    assert_equal(Matrix[[2, 6, 12], [20, 30, 42]], @m1.hadamard_product(@n1))
+    o = Object.new
+    def o.to_matrix
+      Matrix[[1, 2, 3], [-1, 0, 1]]
+    end
+    assert_equal(Matrix[[1, 4, 9], [-4, 0, 6]], @m1.hadamard_product(o))
+    e = Matrix.empty(3, 0)
+    assert_equal(e, e.hadamard_product(e))
+    e = Matrix.empty(0, 3)
+    assert_equal(e, e.hadamard_product(e))
+  end
+
+  def test_exp
+    assert_equal(Matrix[[67,96],[48,99]], Matrix[[7,6],[3,9]] ** 2)
+    assert_equal(Matrix.I(5), Matrix.I(5) ** -1)
+    assert_raise(Matrix::ErrOperationNotDefined) { Matrix.I(5) ** Object.new }
+  end
+
+  # Fails because of Opal copies a method on aliasing
+  # def test_det
+  #   assert_equal(Matrix.instance_method(:determinant), Matrix.instance_method(:det))
+  # end
+
+  def test_rank2
+    assert_equal(2, Matrix[[7,6],[3,9]].rank)
+    assert_equal(0, Matrix[[0,0],[0,0]].rank)
+    assert_equal(3, Matrix[[0,0,1],[0,7,6],[1,3,9]].rank)
+    assert_equal(1, Matrix[[0,1],[0,1],[0,1]].rank)
+    assert_equal(2, @m1.rank)
+  end
+
+  def test_trace
+    assert_equal(1+5+9, Matrix[[1,2,3],[4,5,6],[7,8,9]].trace)
+  end
+
+  def test_transpose
+    assert_equal(Matrix[[1,4],[2,5],[3,6]], @m1.transpose)
+  end
+
+  def test_conjugate
+    assert_equal(Matrix[[Complex(1,-2), Complex(0,-1), 0], [1, 2, 3]], @c1.conjugate)
+  end
+
+  def test_eigensystem
+    m = Matrix[[1, 2], [3, 4]]
+    v, d, v_inv = m.eigensystem
+    assert(d.diagonal?)
+    assert_equal(v.inv, v_inv)
+    # Fails because of the difference in rounding
+    # assert_equal((v * d * v_inv).round(5), m)
+  end
+
+  def test_imaginary
+    assert_equal(Matrix[[2, 1, 0], [0, 0, 0]], @c1.imaginary)
+  end
+
+  def test_lup
+    m = Matrix[[1, 2], [3, 4]]
+    l, u, p = m.lup
+    assert(l.lower_triangular?)
+    assert(u.upper_triangular?)
+    assert(p.permutation?)
+    assert(l * u == p * m)
+    assert_equal(m.lup.solve([2, 5]), Vector[1, Rational(1,2)])
+  end
+
+  def test_real
+    assert_equal(Matrix[[1, 0, 0], [1, 2, 3]], @c1.real)
+  end
+
+  def test_rect
+    assert_equal([Matrix[[1, 0, 0], [1, 2, 3]], Matrix[[2, 1, 0], [0, 0, 0]]], @c1.rect)
+  end
+
+  def test_row_vectors
+    assert_equal([Vector[1,2,3], Vector[4,5,6]], @m1.row_vectors)
+  end
+
+  def test_column_vectors
+    assert_equal([Vector[1,4], Vector[2,5], Vector[3,6]], @m1.column_vectors)
+  end
+
+  def test_to_s
+    assert_equal("Matrix[[1, 2, 3], [4, 5, 6]]", @m1.to_s)
+    assert_equal("Matrix.empty(0, 0)", Matrix[].to_s)
+    assert_equal("Matrix.empty(1, 0)", Matrix[[]].to_s)
+  end
+
+  def test_inspect
+    assert_equal("Matrix[[1, 2, 3], [4, 5, 6]]", @m1.inspect)
+    assert_equal("Matrix.empty(0, 0)", Matrix[].inspect)
+    assert_equal("Matrix.empty(1, 0)", Matrix[[]].inspect)
+  end
+
+  def test_scalar_add
+    s1 = @m1.coerce(1).first
+    assert_equal(Matrix[[1]], (s1 + 0) * Matrix[[1]])
+    assert_raise(Matrix::ErrOperationNotDefined) { s1 + Vector[0] }
+    assert_raise(Matrix::ErrOperationNotDefined) { s1 + Matrix[[0]] }
+    o = Object.new
+    def o.coerce(x)
+      [1, 1]
+    end
+    assert_equal(2, s1 + o)
+  end
+
+  def test_scalar_sub
+    s1 = @m1.coerce(1).first
+    assert_equal(Matrix[[1]], (s1 - 0) * Matrix[[1]])
+    assert_raise(Matrix::ErrOperationNotDefined) { s1 - Vector[0] }
+    assert_raise(Matrix::ErrOperationNotDefined) { s1 - Matrix[[0]] }
+    o = Object.new
+    def o.coerce(x)
+      [1, 1]
+    end
+    assert_equal(0, s1 - o)
+  end
+
+  def test_scalar_mul
+    s1 = @m1.coerce(1).first
+    assert_equal(Matrix[[1]], (s1 * 1) * Matrix[[1]])
+    assert_equal(Vector[2], s1 * Vector[2])
+    assert_equal(Matrix[[2]], s1 * Matrix[[2]])
+    o = Object.new
+    def o.coerce(x)
+      [1, 1]
+    end
+    assert_equal(1, s1 * o)
+  end
+
+  def test_scalar_div
+    s1 = @m1.coerce(1).first
+    assert_equal(Matrix[[1]], (s1 / 1) * Matrix[[1]])
+    assert_raise(Matrix::ErrOperationNotDefined) { s1 / Vector[0] }
+    assert_equal(Matrix[[Rational(1,2)]], s1 / Matrix[[2]])
+    o = Object.new
+    def o.coerce(x)
+      [1, 1]
+    end
+    assert_equal(1, s1 / o)
+  end
+
+  def test_scalar_pow
+    s1 = @m1.coerce(1).first
+    assert_equal(Matrix[[1]], (s1 ** 1) * Matrix[[1]])
+    assert_raise(Matrix::ErrOperationNotDefined) { s1 ** Vector[0] }
+    assert_raise(Matrix::ErrOperationNotImplemented) { s1 ** Matrix[[1]] }
+    o = Object.new
+    def o.coerce(x)
+      [1, 1]
+    end
+    assert_equal(1, s1 ** o)
+  end
+
+  def test_hstack
+    assert_equal Matrix[[1,2,3,2,3,4,1,2,3], [4,5,6,5,6,7,4,5,6]],
+      @m1.hstack(@n1, @m1)
+    # Error checking:
+    assert_raise(TypeError) { @m1.hstack(42) }
+    assert_raise(TypeError) { Matrix.hstack(42, @m1) }
+    assert_raise(Matrix::ErrDimensionMismatch) { @m1.hstack(Matrix.identity(3)) }
+    assert_raise(Matrix::ErrDimensionMismatch) { @e1.hstack(@e2) }
+    # Corner cases:
+    assert_equal @m1, @m1.hstack
+    assert_equal @e1, @e1.hstack(@e1)
+    assert_equal Matrix.empty(0,6), @e2.hstack(@e2)
+    assert_equal SubMatrix, SubMatrix.hstack(@e1).class
+    # From Vectors:
+    assert_equal Matrix[[1, 3],[2, 4]], Matrix.hstack(Vector[1,2], Vector[3, 4])
+  end
+
+  def test_vstack
+    assert_equal Matrix[[1,2,3], [4,5,6], [2,3,4], [5,6,7], [1,2,3], [4,5,6]],
+      @m1.vstack(@n1, @m1)
+    # Error checking:
+    assert_raise(TypeError) { @m1.vstack(42) }
+    assert_raise(TypeError) { Matrix.vstack(42, @m1) }
+    assert_raise(Matrix::ErrDimensionMismatch) { @m1.vstack(Matrix.identity(2)) }
+    assert_raise(Matrix::ErrDimensionMismatch) { @e1.vstack(@e2) }
+    # Corner cases:
+    assert_equal @m1, @m1.vstack
+    assert_equal Matrix.empty(4,0), @e1.vstack(@e1)
+    assert_equal @e2, @e2.vstack(@e2)
+    assert_equal SubMatrix, SubMatrix.vstack(@e1).class
+    # From Vectors:
+    assert_equal Matrix[[1],[2],[3]], Matrix.vstack(Vector[1,2], Vector[3])
+  end
+
+  def test_combine
+    x = Matrix[[6, 6], [4, 4]]
+    y = Matrix[[1, 2], [3, 4]]
+    assert_equal Matrix[[5, 4], [1, 0]], Matrix.combine(x, y) {|a, b| a - b}
+    assert_equal Matrix[[5, 4], [1, 0]], x.combine(y) {|a, b| a - b}
+    # Without block
+    assert_equal Matrix[[5, 4], [1, 0]], Matrix.combine(x, y).each {|a, b| a - b}
+    # With vectors
+    assert_equal Matrix[[111], [222]], Matrix.combine(Matrix[[1], [2]], Vector[10,20], Vector[100,200], &:sum)
+    # Basic checks
+    assert_raise(Matrix::ErrDimensionMismatch) { @m1.combine(x) { raise } }
+    # Edge cases
+    assert_equal Matrix.empty, Matrix.combine{ raise }
+    assert_equal Matrix.empty(3,0), Matrix.combine(Matrix.empty(3,0), Matrix.empty(3,0)) { raise }
+    assert_equal Matrix.empty(0,3), Matrix.combine(Matrix.empty(0,3), Matrix.empty(0,3)) { raise }
+  end
+
+  def test_eigenvalues_and_eigenvectors_symmetric
+    m = Matrix[
+      [8, 1],
+      [1, 8]
+    ]
+    values = m.eigensystem.eigenvalues
+    assert_in_epsilon(7.0, values[0])
+    assert_in_epsilon(9.0, values[1])
+    vectors = m.eigensystem.eigenvectors
+    assert_in_epsilon(-vectors[0][0], vectors[0][1])
+    assert_in_epsilon(vectors[1][0], vectors[1][1])
+  end
+
+  # Fails because of the difference in math
+  # def test_eigenvalues_and_eigenvectors_nonsymmetric
+  #   m = Matrix[
+  #     [8, 1],
+  #     [4, 5]
+  #   ]
+  #   values = m.eigensystem.eigenvalues
+  #   assert_in_epsilon(9.0, values[0])
+  #   assert_in_epsilon(4.0, values[1])
+  #   vectors = m.eigensystem.eigenvectors
+  #   assert_in_epsilon(vectors[0][0], vectors[0][1])
+  #   assert_in_epsilon(-4 * vectors[1][0], vectors[1][1])
+  # end
+end
diff --git a/test/opal/test_openuri.rb b/test/opal/test_openuri.rb
new file mode 100644
index 00000000..be004bbd
--- /dev/null
+++ b/test/opal/test_openuri.rb
@@ -0,0 +1,53 @@
+# frozen_string_literal: false
+require "test/unit"
+require "open-uri"
+
+class TestOpenURI < Test::Unit::TestCase
+  def test_open_http_plain_text
+    open("http://localhost:4567/plain_text") {|f|
+      assert_match(/plain text/, f.read)
+      assert_equal('text/plain', f.content_type)
+    }
+  end
+
+  def test_open_http_html_utf8
+    open("http://localhost:4567/html") {|f|
+      assert_match(/<body>/, f.read)
+      assert_equal('text/html; charset=utf-8', f.content_type)
+    }
+  end
+
+  def test_open_http_image_png
+    #expected = File.open(File.join(File.dirname(__FILE__), 'cat.png'), 'rb').read
+    open("http://localhost:4567/png") {|f|
+      assert_match(/^\u0089PNG\r\n\u001A\n\u0000\u0000\u0000\rIHDR.*/, f.read)
+      assert_equal('image/png', f.content_type)
+    }
+  end
+
+  def test_open_last_modified
+    open("http://localhost:4567/last_modified") {|f|
+      assert_equal('Look Ma, I have a Last-Modified header', f.read)
+      assert_equal(Time.utc(2015,10,21,7,28,0), f.last_modified)
+    }
+  end
+
+  def test_open_http_404
+    assert_raise(OpenURI::HTTPError) { open("http://localhost:4567/404") }
+  end
+
+  def test_open_http_505
+    assert_raise(OpenURI::HTTPError) { open("http://localhost:4567/505") }
+  end
+
+  def test_open_http_error
+    # No HTTP server on port 1234
+    assert_raise(OpenURI::HTTPError) { open("http://localhost:1234") }
+  end
+
+  def test_open_no_header
+    open("http://localhost:4567/no_header") {|f|
+      assert_equal('no header', f.read)
+    }
+  end
+end
diff --git a/test/opal/test_uri.rb b/test/opal/test_uri.rb
new file mode 100644
index 00000000..36027962
--- /dev/null
+++ b/test/opal/test_uri.rb
@@ -0,0 +1,35 @@
+# frozen_string_literal: false
+
+require 'uri'
+
+module URI
+  class TestCommon < Test::Unit::TestCase
+    def test_decode_www_form
+      assert_equal([%w[a 1], %w[a 2]], URI.decode_www_form("a=1&a=2"))
+      assert_equal([%w[a 1;a=2]], URI.decode_www_form("a=1;a=2"))
+      assert_equal([%w[a 1], ['', ''], %w[a 2]], URI.decode_www_form("a=1&&a=2"))
+      assert_raise(ArgumentError){URI.decode_www_form("\u3042")}
+      # assert_equal([%w[a 1], ["\u3042", "\u6F22"]],
+      #              URI.decode_www_form("a=1&%E3%81%82=%E6%BC%A2"))
+      # assert_equal([%w[a 1], ["\uFFFD%8", "\uFFFD"]],
+      #              URI.decode_www_form("a=1&%E3%81%8=%E6%BC"))
+      assert_equal([%w[?a 1], %w[a 2]], URI.decode_www_form("?a=1&a=2"))
+      assert_equal([], URI.decode_www_form(""))
+      # assert_equal([%w[% 1]], URI.decode_www_form("%=1"))
+      # assert_equal([%w[a %]], URI.decode_www_form("a=%"))
+      # assert_equal([%w[a 1], %w[% 2]], URI.decode_www_form("a=1&%=2"))
+      # assert_equal([%w[a 1], %w[b %]], URI.decode_www_form("a=1&b=%"))
+      assert_equal([['a', ''], ['b', '']], URI.decode_www_form("a&b"))
+      bug4098 = '[ruby-core:33464]'
+      assert_equal([['a', 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA'], ['b', '']], URI.decode_www_form("a=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA&b"), bug4098)
+
+      assert_raise(ArgumentError){ URI.decode_www_form("a=1&%82%A0=%8A%BF", "x-sjis") }
+      # assert_equal([["a", "1"], [s("\x82\xA0"), s("\x8a\xBF")]],
+      #              URI.decode_www_form("a=1&%82%A0=%8A%BF", "sjis"))
+      # assert_equal([["a", "1"], [s("\x82\xA0"), s("\x8a\xBF")], %w[_charset_ sjis], [s("\x82\xA1"), s("\x8a\xC0")]],
+      #              URI.decode_www_form("a=1&%82%A0=%8A%BF&_charset_=sjis&%82%A1=%8A%C0", use__charset_: true))
+      assert_equal([["", "isindex"], ["a", "1"]],
+                   URI.decode_www_form("isindex&a=1", isindex: true))
+    end
+  end
+end
diff --git a/test/opal/unsupported_and_bugs.rb b/test/opal/unsupported_and_bugs.rb
new file mode 100644
index 00000000..24601a19
--- /dev/null
+++ b/test/opal/unsupported_and_bugs.rb
@@ -0,0 +1,44 @@
+class Test::Unit::TestCase
+  #
+  # @example
+  #   class TestBase64
+  #     unsupported :test_urlsafe_encode64
+  #     unsupported :test_strict_encode64
+  #   end
+  #
+  def self.unsupported name, message = 'unsupported'
+    define_method name do
+      skip message
+    end
+  end
+
+  #
+  # @example
+  #   class TestBase64
+  #     bug :test_strict_decode64
+  #   end
+  #
+  def self.bug name, message = 'BUG'
+    define_method name do
+      skip message
+    end
+  end
+end
+
+class TestBase64
+  bug :test_strict_decode64
+  bug :test_urlsafe_decode64_unpadded
+end
+
+class TestCall
+  # They work fine if `"a".sub! "b"` is replaced by `[].slice 1`
+  unsupported :test_safe_call_block_command
+  unsupported :test_safe_call_block_call
+  unsupported :test_safe_call_block_call_brace
+  unsupported :test_safe_call_block_call_command
+end
+
+class TestBenchmark
+  # sleep is unsupported if not awaited
+  unsupported :test_realtime_output
+end
\ No newline at end of file
diff --git a/vendored-minitest/minitest.rb b/vendored-minitest/minitest.rb
new file mode 100644
index 00000000..6e15c8e0
--- /dev/null
+++ b/vendored-minitest/minitest.rb
@@ -0,0 +1,783 @@
+# await: *await*
+
+require "optparse"
+require "thread"
+require "mutex_m"
+# require "minitest/parallel"
+require "await"
+
+##
+# :include: README.txt
+
+module Minitest
+  VERSION = "5.5.1" # :nodoc:
+  ENCS = "".respond_to? :encoding # :nodoc:
+
+  @@installed_at_exit ||= false
+  @@after_run = []
+  @extensions = []
+
+  mc = (class << self; self; end)
+
+  ##
+  # Parallel test executor
+
+  # mc.send :attr_accessor, :parallel_executor
+  # self.parallel_executor = Parallel::Executor.new((ENV['N'] || 2).to_i)
+
+  ##
+  # Filter object for backtraces.
+
+  mc.send :attr_accessor, :backtrace_filter
+
+  ##
+  # Reporter object to be used for all runs.
+  #
+  # NOTE: This accessor is only available during setup, not during runs.
+
+  mc.send :attr_accessor, :reporter
+
+  ##
+  # Names of known extension plugins.
+
+  mc.send :attr_accessor, :extensions
+
+  ##
+  # Registers Minitest to run at process exit
+
+  def self.autorun
+    at_exit {
+      next if $! and not ($!.kind_of? SystemExit and $!.success?)
+
+      exit_code = nil
+
+      at_exit {
+        @@after_run.reverse_each(&:call)
+        exit exit_code || false
+      }
+
+      exit_code = Minitest.run(ARGV).await
+    } unless @@installed_at_exit
+    @@installed_at_exit = true
+  end
+
+  ##
+  # A simple hook allowing you to run a block of code after everything
+  # is done running. Eg:
+  #
+  #   Minitest.after_run { p $debugging_info }
+
+  def self.after_run &block
+    @@after_run << block
+  end
+
+  def self.init_plugins options # :nodoc:
+    self.extensions.each do |name|
+      msg = "plugin_#{name}_init"
+      send msg, options if self.respond_to? msg
+    end
+  end
+
+  def self.load_plugins # :nodoc:
+    # return unless self.extensions.empty?
+    #
+    # seen = {}
+    #
+    # require "rubygems" unless defined? Gem
+    #
+    # Gem.find_files("minitest/*_plugin.rb").each do |plugin_path|
+    #   name = File.basename plugin_path, "_plugin.rb"
+    #
+    #   next if seen[name]
+    #   seen[name] = true
+    #
+    #   require plugin_path
+    #   self.extensions << name
+    # end
+  end
+
+  ##
+  # This is the top-level run method. Everything starts from here. It
+  # tells each Runnable sub-class to run, and each of those are
+  # responsible for doing whatever they do.
+  #
+  # The overall structure of a run looks like this:
+  #
+  #   Minitest.autorun
+  #     Minitest.run(args)
+  #       Minitest.__run(reporter, options)
+  #         Runnable.runnables.each
+  #           runnable.run(reporter, options)
+  #             self.runnable_methods.each
+  #               self.run_one_method(self, runnable_method, reporter)
+  #                 Minitest.run_one_method(klass, runnable_method, reporter)
+  #                   klass.new(runnable_method).run
+
+  def self.run args = []
+    self.load_plugins
+
+    options = process_args args
+
+    reporter = CompositeReporter.new
+    reporter << SummaryReporter.new(options[:io], options)
+    reporter << ProgressReporter.new(options[:io], options)
+
+    self.reporter = reporter # this makes it available to plugins
+    self.init_plugins options
+    self.reporter = nil # runnables shouldn't depend on the reporter, ever
+
+    reporter.start
+    __run(reporter, options).await
+    # self.parallel_executor.shutdown
+    reporter.report
+
+    reporter.passed?
+  end
+
+  ##
+  # Internal run method. Responsible for telling all Runnable
+  # sub-classes to run.
+  #
+  # NOTE: this method is redefined in parallel_each.rb, which is
+  # loaded if a Runnable calls parallelize_me!.
+
+  def self.__run reporter, options
+    suites = Runnable.runnables.shuffle
+    parallel, serial = suites.partition { |s| s.test_order == :parallel }
+
+    # If we run the parallel tests before the serial tests, the parallel tests
+    # could run in parallel with the serial tests. This would be bad because
+    # the serial tests won't lock around Reporter#record. Run the serial tests
+    # first, so that after they complete, the parallel tests will lock when
+    # recording results.
+    serial.map_await { |suite| suite.run(reporter, options).await } +
+      parallel.map_await { |suite| suite.run(reporter, options).await }
+  end
+
+  def self.process_args args = [] # :nodoc:
+    options = {
+               :io => $stdout,
+              }
+    orig_args = args.dup
+
+    OptionParser.new do |opts|
+      opts.banner  = "minitest options:"
+      opts.version = Minitest::VERSION
+
+      opts.on "-h", "--help", "Display this help." do
+        puts opts
+        exit
+      end
+
+      desc = "Sets random seed. Also via env. Eg: SEED=n rake"
+      opts.on "-s", "--seed SEED", Integer, desc do |m|
+        options[:seed] = m.to_i
+      end
+
+      opts.on "-v", "--verbose", "Verbose. Show progress processing files." do
+        options[:verbose] = true
+      end
+
+      opts.on "-n", "--name PATTERN","Filter run on /pattern/ or string." do |a|
+        options[:filter] = a
+      end
+
+      unless extensions.empty?
+        opts.separator ""
+        opts.separator "Known extensions: #{extensions.join(', ')}"
+
+        extensions.each do |meth|
+          msg = "plugin_#{meth}_options"
+          send msg, opts, options if self.respond_to?(msg)
+        end
+      end
+
+      begin
+        opts.parse! args
+      rescue OptionParser::InvalidOption => e
+        puts
+        puts e
+        puts
+        puts opts
+        exit 1
+      end
+
+      orig_args -= args
+    end unless args.empty?
+
+    unless options[:seed] then
+      srand
+      options[:seed] = (ENV["RANDOM_SEED"] || srand).to_i % 0xFFFF
+      orig_args << "--seed" << options[:seed].to_s
+    end
+
+    srand options[:seed]
+
+    options[:args] = orig_args.map { |s|
+      s =~ /[\s|&<>$()]/ ? s.inspect : s
+    }.join " "
+
+    options
+  end
+
+  def self.filter_backtrace bt # :nodoc:
+    backtrace_filter.filter bt
+  end
+
+  ##
+  # Represents anything "runnable", like Test, Spec, Benchmark, or
+  # whatever you can dream up.
+  #
+  # Subclasses of this are automatically registered and available in
+  # Runnable.runnables.
+
+  class Runnable
+    ##
+    # Number of assertions executed in this run.
+
+    attr_accessor :assertions
+
+    ##
+    # An assertion raised during the run, if any.
+
+    attr_accessor :failures
+
+    ##
+    # Name of the run.
+
+    def name
+      @NAME
+    end
+
+    ##
+    # Set the name of the run.
+
+    def name= o
+      @NAME = o
+    end
+
+    def self.inherited klass # :nodoc:
+      self.runnables << klass
+      super
+    end
+
+    ##
+    # Returns all instance methods matching the pattern +re+.
+
+    def self.methods_matching re
+      public_instance_methods(true).grep(re).map(&:to_s)
+    end
+
+    def self.reset # :nodoc:
+      @@runnables = []
+    end
+
+    reset
+
+    ##
+    # Responsible for running all runnable methods in a given class,
+    # each in its own instance. Each instance is passed to the
+    # reporter to record.
+
+    def self.run reporter, options = {}
+      filter = options[:filter] || '/./'
+      filter = Regexp.new $1 if filter =~ /\/(.*)\//
+
+      filtered_methods = self.runnable_methods.find_all { |m|
+        filter === m || filter === "#{self}##{m}"
+      }
+
+      with_info_handler(reporter) do
+        filtered_methods.each_await do |method_name|
+          run_one_method(self, method_name, reporter).await
+        end
+      end.await
+    end
+
+    ##
+    # Runs a single method and has the reporter record the result.
+    # This was considered internal API but is factored out of run so
+    # that subclasses can specialize the running of an individual
+    # test. See Minitest::ParallelTest::ClassMethods for an example.
+
+    def self.run_one_method klass, method_name, reporter
+      reporter.record Minitest.run_one_method(klass, method_name).await
+    end
+
+    def self.with_info_handler reporter, &block # :nodoc:
+      handler = lambda do
+        unless reporter.passed? then
+          warn "Current results:"
+          warn ""
+          warn reporter.reporters.first
+          warn ""
+        end
+      end
+
+      on_signal("INFO", handler, &block).await
+    end
+
+    SIGNALS = {} # Signal.list # :nodoc:
+
+    def self.on_signal name, action # :nodoc:
+      supported = SIGNALS[name]
+
+      old_trap = trap name do
+        old_trap.call if old_trap.respond_to? :call
+        action.call
+      end if supported
+
+      yield.await
+    ensure
+      trap name, old_trap if supported
+    end
+
+    ##
+    # Each subclass of Runnable is responsible for overriding this
+    # method to return all runnable methods. See #methods_matching.
+
+    def self.runnable_methods
+      raise NotImplementedError, "subclass responsibility"
+    end
+
+    ##
+    # Returns all subclasses of Runnable.
+
+    def self.runnables
+      @@runnables
+    end
+
+    def marshal_dump # :nodoc:
+      [self.name, self.failures, self.assertions]
+    end
+
+    def marshal_load ary # :nodoc:
+      self.name, self.failures, self.assertions = ary
+    end
+
+    def failure # :nodoc:
+      self.failures.first
+    end
+
+    def initialize name # :nodoc:
+      self.name       = name
+      self.failures   = []
+      self.assertions = 0
+    end
+
+    ##
+    # Runs a single method. Needs to return self.
+
+    def run
+      raise NotImplementedError, "subclass responsibility"
+    end
+
+    ##
+    # Did this run pass?
+    #
+    # Note: skipped runs are not considered passing, but they don't
+    # cause the process to exit non-zero.
+
+    def passed?
+      raise NotImplementedError, "subclass responsibility"
+    end
+
+    ##
+    # Returns a single character string to print based on the result
+    # of the run. Eg ".", "F", or "E".
+
+    def result_code
+      raise NotImplementedError, "subclass responsibility"
+    end
+
+    ##
+    # Was this run skipped? See #passed? for more information.
+
+    def skipped?
+      raise NotImplementedError, "subclass responsibility"
+    end
+  end
+
+  ##
+  # Defines the API for Reporters. Subclass this and override whatever
+  # you want. Go nuts.
+
+  class AbstractReporter
+    # include Mutex_m
+
+    ##
+    # Starts reporting on the run.
+
+    def start
+    end
+
+    ##
+    # Record a result and output the Runnable#result_code. Stores the
+    # result of the run if the run did not pass.
+
+    def record result
+    end
+
+    ##
+    # Outputs the summary of the run.
+
+    def report
+    end
+
+    ##
+    # Did this run pass?
+
+    def passed?
+      true
+    end
+  end
+
+  class Reporter < AbstractReporter # :nodoc:
+    ##
+    # The IO used to report.
+
+    attr_accessor :io
+
+    ##
+    # Command-line options for this run.
+
+    attr_accessor :options
+
+    def initialize io = $stdout, options = {} # :nodoc:
+      super()
+      self.io      = io
+      self.options = options
+    end
+  end
+
+  ##
+  # A very simple reporter that prints the "dots" during the run.
+  #
+  # This is added to the top-level CompositeReporter at the start of
+  # the run. If you want to change the output of minitest via a
+  # plugin, pull this out of the composite and replace it with your
+  # own.
+
+  class ProgressReporter < Reporter
+    def record result # :nodoc:
+      io.print "%s#%s = %.2f s = " % [result.class, result.name, result.time] if
+        options[:verbose]
+      io.print result.result_code
+      io.puts if options[:verbose]
+    end
+  end
+
+  ##
+  # A reporter that gathers statistics about a test run. Does not do
+  # any IO because meant to be used as a parent class for a reporter
+  # that does.
+  #
+  # If you want to create an entirely different type of output (eg,
+  # CI, HTML, etc), this is the place to start.
+
+  class StatisticsReporter < Reporter
+    # :stopdoc:
+    attr_accessor :assertions
+    attr_accessor :count
+    attr_accessor :results
+    attr_accessor :start_time
+    attr_accessor :total_time
+    attr_accessor :failures
+    attr_accessor :errors
+    attr_accessor :skips
+    # :startdoc:
+
+    def initialize io = $stdout, options = {} # :nodoc:
+      super
+
+      self.assertions = 0
+      self.count      = 0
+      self.results    = []
+      self.start_time = nil
+      self.total_time = nil
+      self.failures   = nil
+      self.errors     = nil
+      self.skips      = nil
+    end
+
+    def passed? # :nodoc:
+      results.all?(&:skipped?)
+    end
+
+    def start # :nodoc:
+      self.start_time = Time.now
+    end
+
+    def record result # :nodoc:
+      self.count += 1
+      self.assertions += result.assertions
+
+      results << result if not result.passed? or result.skipped?
+    end
+
+    def report # :nodoc:
+      aggregate = results.group_by { |r| r.failure.class }
+      aggregate.default = [] # dumb. group_by should provide this
+
+      self.total_time = Time.now - start_time
+      self.failures   = aggregate[Assertion].size
+      self.errors     = aggregate[UnexpectedError].size
+      self.skips      = aggregate[Skip].size
+    end
+  end
+
+  ##
+  # A reporter that prints the header, summary, and failure details at
+  # the end of the run.
+  #
+  # This is added to the top-level CompositeReporter at the start of
+  # the run. If you want to change the output of minitest via a
+  # plugin, pull this out of the composite and replace it with your
+  # own.
+
+  class SummaryReporter < StatisticsReporter
+    # :stopdoc:
+    attr_accessor :sync
+    attr_accessor :old_sync
+    # :startdoc:
+
+    def start # :nodoc:
+      super
+
+      io.puts "Run options: #{options[:args]}"
+      io.puts
+      io.puts "# Running:"
+      io.puts
+
+      self.sync = io.respond_to? :"sync=" # stupid emacs
+      self.old_sync, io.sync = io.sync, true if self.sync
+    end
+
+    def report # :nodoc:
+      super
+
+      io.sync = self.old_sync
+
+      io.puts unless options[:verbose] # finish the dots
+      io.puts
+      io.puts statistics
+      io.puts aggregated_results
+      io.puts summary
+    end
+
+    def statistics # :nodoc:
+      "Finished in %.6fs, %.4f runs/s, %.4f assertions/s." %
+        [total_time, count / total_time, assertions / total_time]
+    end
+
+    def aggregated_results # :nodoc:
+      filtered_results = results.dup
+      filtered_results.reject!(&:skipped?) unless options[:verbose]
+
+      s = filtered_results.each_with_index.map { |result, i|
+        "\n%3d) %s" % [i+1, result]
+      }.join("\n") + "\n"
+
+      # s.force_encoding(io.external_encoding) if
+      #   ENCS and io.external_encoding and s.encoding != io.external_encoding
+
+      s
+    end
+
+    alias to_s aggregated_results
+
+    def summary # :nodoc:
+      extra = ""
+
+      extra = "\n\nYou have skipped tests. Run with --verbose for details." if
+        results.any?(&:skipped?) unless options[:verbose] or ENV["MT_NO_SKIP_MSG"]
+
+      "%d runs, %d assertions, %d failures, %d errors, %d skips%s" %
+        [count, assertions, failures, errors, skips, extra]
+    end
+  end
+
+  ##
+  # Dispatch to multiple reporters as one.
+
+  class CompositeReporter < AbstractReporter
+    ##
+    # The list of reporters to dispatch to.
+
+    attr_accessor :reporters
+
+    def initialize *reporters # :nodoc:
+      super()
+      self.reporters = reporters
+    end
+
+    ##
+    # Add another reporter to the mix.
+
+    def << reporter
+      self.reporters << reporter
+    end
+
+    def passed? # :nodoc:
+      self.reporters.all?(&:passed?)
+    end
+
+    def start # :nodoc:
+      self.reporters.each(&:start)
+    end
+
+    def record result # :nodoc:
+      self.reporters.each do |reporter|
+        reporter.record result
+      end
+    end
+
+    def report # :nodoc:
+      self.reporters.each(&:report)
+    end
+  end
+
+  ##
+  # Represents run failures.
+
+  class Assertion < Exception
+    def error # :nodoc:
+      self
+    end
+
+    ##
+    # Where was this run before an assertion was raised?
+
+    def location
+      last_before_assertion = ""
+      self.backtrace.reverse_each do |s|
+        break if s =~ /in .(assert|refute|flunk|pass|fail|raise|must|wont)/
+        last_before_assertion = s
+      end
+      last_before_assertion.sub(/:in .*$/, "")
+    end
+
+    def result_code # :nodoc:
+      result_label[0, 1]
+    end
+
+    def result_label # :nodoc:
+      "Failure"
+    end
+  end
+
+  ##
+  # Assertion raised when skipping a run.
+
+  class Skip < Assertion
+    def result_label # :nodoc:
+      "Skipped"
+    end
+  end
+
+  ##
+  # Assertion wrapping an unexpected error that was raised during a run.
+
+  class UnexpectedError < Assertion
+    attr_accessor :exception # :nodoc:
+
+    def initialize exception # :nodoc:
+      super
+      self.exception = exception
+    end
+
+    def backtrace # :nodoc:
+      self.exception.backtrace
+    end
+
+    def error # :nodoc:
+      self.exception
+    end
+
+    def message # :nodoc:
+      bt = Minitest::filter_backtrace(self.backtrace).join "\n    "
+      "#{self.exception.class}: #{self.exception.message}\n    #{bt}"
+    end
+
+    def result_label # :nodoc:
+      "Error"
+    end
+  end
+
+  ##
+  # Provides a simple set of guards that you can use in your tests
+  # to skip execution if it is not applicable. These methods are
+  # mixed into Test as both instance and class methods so you
+  # can use them inside or outside of the test methods.
+  #
+  #   def test_something_for_mri
+  #     skip "bug 1234"  if jruby?
+  #     # ...
+  #   end
+  #
+  #   if windows? then
+  #     # ... lots of test methods ...
+  #   end
+
+  module Guard
+
+    ##
+    # Is this running on jruby?
+
+    def jruby? platform = RUBY_PLATFORM
+      "java" == platform
+    end
+
+    ##
+    # Is this running on maglev?
+
+    def maglev? platform = defined?(RUBY_ENGINE) && RUBY_ENGINE
+      "maglev" == platform
+    end
+
+    ##
+    # Is this running on mri?
+
+    def mri? platform = RUBY_DESCRIPTION
+      /^ruby/ =~ platform
+    end
+
+    ##
+    # Is this running on rubinius?
+
+    def rubinius? platform = defined?(RUBY_ENGINE) && RUBY_ENGINE
+      "rbx" == platform
+    end
+
+    ##
+    # Is this running on windows?
+
+    def windows? platform = RUBY_PLATFORM
+      /mswin|mingw/ =~ platform
+    end
+  end
+
+  class BacktraceFilter # :nodoc:
+    def filter bt
+      return ["No backtrace"] unless bt
+
+      return bt.dup if $DEBUG
+
+      new_bt = bt.take_while { |line| line !~ /lib\/minitest/ }
+      new_bt = bt.select     { |line| line !~ /lib\/minitest/ } if new_bt.empty?
+      new_bt = bt.dup                                           if new_bt.empty?
+
+      new_bt
+    end
+  end
+
+  self.backtrace_filter = BacktraceFilter.new
+
+  def self.run_one_method klass, method_name # :nodoc:
+    result = klass.new(method_name).run.await
+    raise "#{klass}#run _must_ return self" unless klass === result
+    result
+  end
+end
+
+require "minitest/test"
diff --git a/vendored-minitest/minitest/assertions.rb b/vendored-minitest/minitest/assertions.rb
new file mode 100644
index 00000000..09f203e1
--- /dev/null
+++ b/vendored-minitest/minitest/assertions.rb
@@ -0,0 +1,664 @@
+require "rbconfig"
+require "tempfile"
+require 'stringio'
+
+module Minitest
+  ##
+  # Minitest Assertions.  All assertion methods accept a +msg+ which is
+  # printed if the assertion fails.
+  #
+  # Protocol: Nearly everything here boils up to +assert+, which
+  # expects to be able to increment an instance accessor named
+  # +assertions+. This is not provided by Assertions and must be
+  # provided by the thing including Assertions. See Minitest::Runnable
+  # for an example.
+
+  module Assertions
+    UNDEFINED = Object.new # :nodoc:
+
+    def UNDEFINED.inspect # :nodoc:
+      "UNDEFINED" # again with the rdoc bugs... :(
+    end
+
+    ##
+    # Returns the diff command to use in #diff. Tries to intelligently
+    # figure out what diff to use.
+
+    def self.diff
+      @diff = if (RbConfig::CONFIG['host_os'] =~ /mswin|mingw/ &&
+                  system("diff.exe", __FILE__, __FILE__)) then
+                "diff.exe -u"
+              elsif Minitest::Test.maglev? then
+                "diff -u"
+              elsif system("gdiff", __FILE__, __FILE__)
+                "gdiff -u" # solaris and kin suck
+              elsif system("diff", __FILE__, __FILE__)
+                "diff -u"
+              else
+                nil
+              end unless defined? @diff
+
+      @diff
+    end
+
+    ##
+    # Set the diff command to use in #diff.
+
+    def self.diff= o
+      @diff = o
+    end
+
+    ##
+    # Returns a diff between +exp+ and +act+. If there is no known
+    # diff command or if it doesn't make sense to diff the output
+    # (single line, short output), then it simply returns a basic
+    # comparison between the two.
+
+    def diff exp, act
+      expect = mu_pp_for_diff exp
+      butwas = mu_pp_for_diff act
+      result = nil
+
+      need_to_diff = false
+        # (expect.include?("\n")    ||
+        #  butwas.include?("\n")    ||
+        #  expect.size > 30         ||
+        #  butwas.size > 30         ||
+        #  expect == butwas)        &&
+        # Minitest::Assertions.diff
+
+
+      return "Expected: #{mu_pp exp}\n  Actual: #{mu_pp act}" unless
+        need_to_diff
+
+      # Tempfile.open("expect") do |a|
+      #   a.puts expect
+      #   a.flush
+      #
+      #   Tempfile.open("butwas") do |b|
+      #     b.puts butwas
+      #     b.flush
+      #
+      #     result = `#{Minitest::Assertions.diff} #{a.path} #{b.path}`
+      #     result.sub!(/^\-\-\- .+/, "--- expected")
+      #     result.sub!(/^\+\+\+ .+/, "+++ actual")
+      #
+      #     if result.empty? then
+      #       klass = exp.class
+      #       result = [
+      #                 "No visible difference in the #{klass}#inspect output.\n",
+      #                 "You should look at the implementation of #== on ",
+      #                 "#{klass} or its members.\n",
+      #                 expect,
+      #                ].join
+      #     end
+      #   end
+      # end
+
+      result
+    end
+
+    ##
+    # This returns a human-readable version of +obj+. By default
+    # #inspect is called. You can override this to use #pretty_print
+    # if you want.
+
+    def mu_pp obj
+      s = obj.inspect
+      # s = s.encode Encoding.default_external if defined? Encoding
+      s
+    end
+
+    ##
+    # This returns a diff-able human-readable version of +obj+. This
+    # differs from the regular mu_pp because it expands escaped
+    # newlines and makes hex-values generic (like object_ids). This
+    # uses mu_pp to do the first pass and then cleans it up.
+
+    def mu_pp_for_diff obj
+      mu_pp(obj).gsub(/\\n/, "\n").gsub(/:0x[a-fA-F0-9]{4,}/m, ':0xXXXXXX')
+    end
+
+    ##
+    # Fails unless +test+ is truthy.
+
+    def assert test, msg = nil
+      self.assertions += 1
+      unless test then
+        msg ||= "Failed assertion, no message given."
+        msg = msg.call if Proc === msg
+        raise Minitest::Assertion, msg
+      end
+      true
+    end
+
+    def _synchronize # :nodoc:
+      yield
+    end
+
+    ##
+    # Fails unless +obj+ is empty.
+
+    def assert_empty obj, msg = nil
+      msg = message(msg) { "Expected #{mu_pp(obj)} to be empty" }
+      assert_respond_to obj, :empty?
+      assert obj.empty?, msg
+    end
+
+    E = "" # :nodoc:
+
+    ##
+    # Fails unless <tt>exp == act</tt> printing the difference between
+    # the two, if possible.
+    #
+    # If there is no visible difference but the assertion fails, you
+    # should suspect that your #== is buggy, or your inspect output is
+    # missing crucial details.
+    #
+    # For floats use assert_in_delta.
+    #
+    # See also: Minitest::Assertions.diff
+
+    def assert_equal exp, act, msg = nil
+      msg = message(msg, E) { diff exp, act }
+      assert exp == act, msg
+    end
+
+    ##
+    # For comparing Floats.  Fails unless +exp+ and +act+ are within +delta+
+    # of each other.
+    #
+    #   assert_in_delta Math::PI, (22.0 / 7.0), 0.01
+
+    def assert_in_delta exp, act, delta = 0.001, msg = nil
+      n = (exp - act).abs
+      msg = message(msg) {
+        "Expected |#{exp} - #{act}| (#{n}) to be <= #{delta}"
+      }
+      assert delta >= n, msg
+    end
+
+    ##
+    # For comparing Floats.  Fails unless +exp+ and +act+ have a relative
+    # error less than +epsilon+.
+
+    def assert_in_epsilon a, b, epsilon = 0.001, msg = nil
+      assert_in_delta a, b, [a.abs, b.abs].min * epsilon, msg
+    end
+
+    ##
+    # Fails unless +collection+ includes +obj+.
+
+    def assert_includes collection, obj, msg = nil
+      msg = message(msg) {
+        "Expected #{mu_pp(collection)} to include #{mu_pp(obj)}"
+      }
+      assert_respond_to collection, :include?
+      assert collection.include?(obj), msg
+    end
+
+    ##
+    # Fails unless +obj+ is an instance of +cls+.
+
+    def assert_instance_of cls, obj, msg = nil
+      msg = message(msg) {
+        "Expected #{mu_pp(obj)} to be an instance of #{cls}, not #{obj.class}"
+      }
+
+      assert obj.instance_of?(cls), msg
+    end
+
+    ##
+    # Fails unless +obj+ is a kind of +cls+.
+
+    def assert_kind_of cls, obj, msg = nil
+      msg = message(msg) {
+        "Expected #{mu_pp(obj)} to be a kind of #{cls}, not #{obj.class}" }
+
+      assert obj.kind_of?(cls), msg
+    end
+
+    ##
+    # Fails unless +matcher+ <tt>=~</tt> +obj+.
+
+    def assert_match matcher, obj, msg = nil
+      msg = message(msg) { "Expected #{mu_pp matcher} to match #{mu_pp obj}" }
+      assert_respond_to matcher, :"=~"
+      matcher = Regexp.new Regexp.escape matcher if String === matcher
+      assert matcher =~ obj, msg
+    end
+
+    ##
+    # Fails unless +obj+ is nil
+
+    def assert_nil obj, msg = nil
+      msg = message(msg) { "Expected #{mu_pp(obj)} to be nil" }
+      assert obj.nil?, msg
+    end
+
+    ##
+    # For testing with binary operators. Eg:
+    #
+    #   assert_operator 5, :<=, 4
+
+    def assert_operator o1, op, o2 = UNDEFINED, msg = nil
+      return assert_predicate o1, op, msg if UNDEFINED == o2
+      msg = message(msg) { "Expected #{mu_pp(o1)} to be #{op} #{mu_pp(o2)}" }
+      assert o1.__send__(op, o2), msg
+    end
+
+    ##
+    # Fails if stdout or stderr do not output the expected results.
+    # Pass in nil if you don't care about that streams output. Pass in
+    # "" if you require it to be silent. Pass in a regexp if you want
+    # to pattern match.
+    #
+    # NOTE: this uses #capture_io, not #capture_subprocess_io.
+    #
+    # See also: #assert_silent
+
+    def assert_output stdout = nil, stderr = nil
+      out, err = capture_io do
+        yield
+      end
+
+      err_msg = Regexp === stderr ? :assert_match : :assert_equal if stderr
+      out_msg = Regexp === stdout ? :assert_match : :assert_equal if stdout
+
+      y = send err_msg, stderr, err, "In stderr" if err_msg
+      x = send out_msg, stdout, out, "In stdout" if out_msg
+
+      (!stdout || x) && (!stderr || y)
+    end
+
+    ##
+    # For testing with predicates. Eg:
+    #
+    #   assert_predicate str, :empty?
+    #
+    # This is really meant for specs and is front-ended by assert_operator:
+    #
+    #   str.must_be :empty?
+
+    def assert_predicate o1, op, msg = nil
+      msg = message(msg) { "Expected #{mu_pp(o1)} to be #{op}" }
+      assert o1.__send__(op), msg
+    end
+
+    ##
+    # Fails unless the block raises one of +exp+. Returns the
+    # exception matched so you can check the message, attributes, etc.
+
+    def assert_raises *exp
+      msg = "#{exp.pop}.\n" if String === exp.last
+
+      begin
+        yield
+      rescue Minitest::Skip => e
+        return e if exp.include? Minitest::Skip
+        raise e
+      rescue Exception => e
+        expected = exp.any? { |ex|
+          if ex.instance_of? Module then
+            e.kind_of? ex
+          else
+            e.instance_of? ex
+          end
+        }
+
+        assert expected, proc {
+          exception_details(e, "#{msg}#{mu_pp(exp)} exception expected, not")
+        }
+
+        return e
+      end
+
+      exp = exp.first if exp.size == 1
+
+      flunk "#{msg}#{mu_pp(exp)} expected but nothing was raised."
+    end
+
+    ##
+    # Fails unless +obj+ responds to +meth+.
+
+    def assert_respond_to obj, meth, msg = nil
+      msg = message(msg) {
+        "Expected #{mu_pp(obj)} (#{obj.class}) to respond to ##{meth}"
+      }
+      assert obj.respond_to?(meth), msg
+    end
+
+    ##
+    # Fails unless +exp+ and +act+ are #equal?
+
+    def assert_same exp, act, msg = nil
+      msg = message(msg) {
+        data = [mu_pp(act), act.object_id, mu_pp(exp), exp.object_id]
+        "Expected %s (oid=%d) to be the same as %s (oid=%d)" % data
+      }
+      assert exp.equal?(act), msg
+    end
+
+    ##
+    # +send_ary+ is a receiver, message and arguments.
+    #
+    # Fails unless the call returns a true value
+
+    def assert_send send_ary, m = nil
+      recv, msg, *args = send_ary
+      m = message(m) {
+        "Expected #{mu_pp(recv)}.#{msg}(*#{mu_pp(args)}) to return true" }
+      assert recv.__send__(msg, *args), m
+    end
+
+    ##
+    # Fails if the block outputs anything to stderr or stdout.
+    #
+    # See also: #assert_output
+
+    def assert_silent
+      assert_output "", "" do
+        yield
+      end
+    end
+
+    ##
+    # Fails unless the block throws +sym+
+
+    def assert_throws sym, msg = nil
+      default = "Expected #{mu_pp(sym)} to have been thrown"
+      caught = true
+      catch(sym) do
+        begin
+          yield
+        rescue ThreadError => e       # wtf?!? 1.8 + threads == suck
+          default += ", not \:#{e.message[/uncaught throw \`(\w+?)\'/, 1]}"
+        rescue ArgumentError => e     # 1.9 exception
+          default += ", not #{e.message.split(/ /).last}"
+        rescue NameError => e         # 1.8 exception
+          default += ", not #{e.name.inspect}"
+        end
+        caught = false
+      end
+
+      assert caught, message(msg) { default }
+    end
+
+    ##
+    # Captures $stdout and $stderr into strings:
+    #
+    #   out, err = capture_io do
+    #     puts "Some info"
+    #     warn "You did a bad thing"
+    #   end
+    #
+    #   assert_match %r%info%, out
+    #   assert_match %r%bad%, err
+    #
+    # NOTE: For efficiency, this method uses StringIO and does not
+    # capture IO for subprocesses. Use #capture_subprocess_io for
+    # that.
+
+    def capture_io
+      _synchronize do
+        begin
+          captured_stdout, captured_stderr = StringIO.new, StringIO.new
+
+          orig_stdout, orig_stderr = $stdout, $stderr
+          $stdout, $stderr         = captured_stdout, captured_stderr
+
+          yield
+
+          return captured_stdout.string, captured_stderr.string
+        ensure
+          $stdout = orig_stdout
+          $stderr = orig_stderr
+        end
+      end
+    end
+
+    alias capture_output capture_io
+
+    ##
+    # Captures $stdout and $stderr into strings, using Tempfile to
+    # ensure that subprocess IO is captured as well.
+    #
+    #   out, err = capture_subprocess_io do
+    #     system "echo Some info"
+    #     system "echo You did a bad thing 1>&2"
+    #   end
+    #
+    #   assert_match %r%info%, out
+    #   assert_match %r%bad%, err
+    #
+    # NOTE: This method is approximately 10x slower than #capture_io so
+    # only use it when you need to test the output of a subprocess.
+
+    def capture_subprocess_io
+      _synchronize do
+        begin
+      require 'tempfile'
+
+      captured_stdout, captured_stderr = Tempfile.new("out"), Tempfile.new("err")
+
+      orig_stdout, orig_stderr = $stdout.dup, $stderr.dup
+      $stdout.reopen captured_stdout
+      $stderr.reopen captured_stderr
+
+      yield
+
+      $stdout.rewind
+      $stderr.rewind
+
+      return captured_stdout.read, captured_stderr.read
+    ensure
+      captured_stdout.unlink
+      captured_stderr.unlink
+      $stdout.reopen orig_stdout
+      $stderr.reopen orig_stderr
+        end
+      end
+    end
+
+    ##
+    # Returns details for exception +e+
+
+    def exception_details e, msg
+      [
+       "#{msg}",
+       "Class: <#{e.class}>",
+       "Message: <#{e.message.inspect}>",
+       "---Backtrace---",
+       "#{Minitest::filter_backtrace(e.backtrace).join("\n")}",
+       "---------------",
+      ].join "\n"
+    end
+
+    ##
+    # Fails with +msg+
+
+    def flunk msg = nil
+      msg ||= "Epic Fail!"
+      assert false, msg
+    end
+
+    ##
+    # Returns a proc that will output +msg+ along with the default message.
+
+    def message msg = nil, ending = nil, &default
+      proc {
+        msg = msg.call.chomp(".") if Proc === msg
+        custom_message = "#{msg}.\n" unless msg.nil? or msg.to_s.empty?
+        "#{custom_message}#{default.call}#{ending || "."}"
+      }
+    end
+
+    ##
+    # used for counting assertions
+
+    def pass msg = nil
+      assert true
+    end
+
+    ##
+    # Fails if +test+ is truthy.
+
+    def refute test, msg = nil
+      msg ||= "Failed refutation, no message given"
+      not assert(! test, msg)
+    end
+
+    ##
+    # Fails if +obj+ is empty.
+
+    def refute_empty obj, msg = nil
+      msg = message(msg) { "Expected #{mu_pp(obj)} to not be empty" }
+      assert_respond_to obj, :empty?
+      refute obj.empty?, msg
+    end
+
+    ##
+    # Fails if <tt>exp == act</tt>.
+    #
+    # For floats use refute_in_delta.
+
+    def refute_equal exp, act, msg = nil
+      msg = message(msg) {
+        "Expected #{mu_pp(act)} to not be equal to #{mu_pp(exp)}"
+      }
+      refute exp == act, msg
+    end
+
+    ##
+    # For comparing Floats.  Fails if +exp+ is within +delta+ of +act+.
+    #
+    #   refute_in_delta Math::PI, (22.0 / 7.0)
+
+    def refute_in_delta exp, act, delta = 0.001, msg = nil
+      n = (exp - act).abs
+      msg = message(msg) {
+        "Expected |#{exp} - #{act}| (#{n}) to not be <= #{delta}"
+      }
+      refute delta >= n, msg
+    end
+
+    ##
+    # For comparing Floats.  Fails if +exp+ and +act+ have a relative error
+    # less than +epsilon+.
+
+    def refute_in_epsilon a, b, epsilon = 0.001, msg = nil
+      refute_in_delta a, b, a * epsilon, msg
+    end
+
+    ##
+    # Fails if +collection+ includes +obj+.
+
+    def refute_includes collection, obj, msg = nil
+      msg = message(msg) {
+        "Expected #{mu_pp(collection)} to not include #{mu_pp(obj)}"
+      }
+      assert_respond_to collection, :include?
+      refute collection.include?(obj), msg
+    end
+
+    ##
+    # Fails if +obj+ is an instance of +cls+.
+
+    def refute_instance_of cls, obj, msg = nil
+      msg = message(msg) {
+        "Expected #{mu_pp(obj)} to not be an instance of #{cls}"
+      }
+      refute obj.instance_of?(cls), msg
+    end
+
+    ##
+    # Fails if +obj+ is a kind of +cls+.
+
+    def refute_kind_of cls, obj, msg = nil
+      msg = message(msg) { "Expected #{mu_pp(obj)} to not be a kind of #{cls}" }
+      refute obj.kind_of?(cls), msg
+    end
+
+    ##
+    # Fails if +matcher+ <tt>=~</tt> +obj+.
+
+    def refute_match matcher, obj, msg = nil
+      msg = message(msg) {"Expected #{mu_pp matcher} to not match #{mu_pp obj}"}
+      assert_respond_to matcher, :"=~"
+      matcher = Regexp.new Regexp.escape matcher if String === matcher
+      refute matcher =~ obj, msg
+    end
+
+    ##
+    # Fails if +obj+ is nil.
+
+    def refute_nil obj, msg = nil
+      msg = message(msg) { "Expected #{mu_pp(obj)} to not be nil" }
+      refute obj.nil?, msg
+    end
+
+    ##
+    # Fails if +o1+ is not +op+ +o2+. Eg:
+    #
+    #   refute_operator 1, :>, 2 #=> pass
+    #   refute_operator 1, :<, 2 #=> fail
+
+    def refute_operator o1, op, o2 = UNDEFINED, msg = nil
+      return refute_predicate o1, op, msg if UNDEFINED == o2
+      msg = message(msg) { "Expected #{mu_pp(o1)} to not be #{op} #{mu_pp(o2)}"}
+      refute o1.__send__(op, o2), msg
+    end
+
+    ##
+    # For testing with predicates.
+    #
+    #   refute_predicate str, :empty?
+    #
+    # This is really meant for specs and is front-ended by refute_operator:
+    #
+    #   str.wont_be :empty?
+
+    def refute_predicate o1, op, msg = nil
+      msg = message(msg) { "Expected #{mu_pp(o1)} to not be #{op}" }
+      refute o1.__send__(op), msg
+    end
+
+    ##
+    # Fails if +obj+ responds to the message +meth+.
+
+    def refute_respond_to obj, meth, msg = nil
+      msg = message(msg) { "Expected #{mu_pp(obj)} to not respond to #{meth}" }
+
+      refute obj.respond_to?(meth), msg
+    end
+
+    ##
+    # Fails if +exp+ is the same (by object identity) as +act+.
+
+    def refute_same exp, act, msg = nil
+      msg = message(msg) {
+        data = [mu_pp(act), act.object_id, mu_pp(exp), exp.object_id]
+        "Expected %s (oid=%d) to not be the same as %s (oid=%d)" % data
+      }
+      refute exp.equal?(act), msg
+    end
+
+    ##
+    # Skips the current run. If run in verbose-mode, the skipped run
+    # gets listed at the end of the run but doesn't cause a failure
+    # exit code.
+
+    def skip msg = nil, bt = caller
+      msg ||= "Skipped, no message given"
+      @skip = true
+      raise Minitest::Skip, msg, bt
+    end
+
+    ##
+    # Was this testcase skipped? Meant for #teardown.
+
+    def skipped?
+      defined?(@skip) and @skip
+    end
+  end
+end
diff --git a/vendored-minitest/minitest/autorun.rb b/vendored-minitest/minitest/autorun.rb
new file mode 100644
index 00000000..d867671a
--- /dev/null
+++ b/vendored-minitest/minitest/autorun.rb
@@ -0,0 +1,12 @@
+# begin
+#   require "rubygems"
+#   gem "minitest"
+# rescue Gem::LoadError
+#   # do nothing
+# end
+
+require "minitest"
+require "minitest/spec"
+require "minitest/mock"
+
+Minitest.autorun
diff --git a/vendored-minitest/minitest/benchmark.rb b/vendored-minitest/minitest/benchmark.rb
new file mode 100644
index 00000000..f92572fa
--- /dev/null
+++ b/vendored-minitest/minitest/benchmark.rb
@@ -0,0 +1,428 @@
+# await: *await*
+
+require 'minitest/unit'
+require 'minitest/spec'
+
+module Minitest
+  ##
+  # Subclass Benchmark to create your own benchmark runs. Methods
+  # starting with "bench_" get executed on a per-class.
+  #
+  # See Minitest::Assertions
+
+  class Benchmark < Test
+    def self.io # :nodoc:
+      @io
+    end
+
+    def io # :nodoc:
+      self.class.io
+    end
+
+    def self.run reporter, options = {} # :nodoc:
+      # NOTE: this is truly horrible... but I don't see a way around this ATM.
+      @io = reporter.reporters.first.io
+      super
+    end
+
+    def self.runnable_methods # :nodoc:
+      methods_matching(/^bench_/)
+    end
+
+    ##
+    # Returns a set of ranges stepped exponentially from +min+ to
+    # +max+ by powers of +base+. Eg:
+    #
+    #   bench_exp(2, 16, 2) # => [2, 4, 8, 16]
+
+    def self.bench_exp min, max, base = 10
+      min = (Math.log10(min) / Math.log10(base)).to_i
+      max = (Math.log10(max) / Math.log10(base)).to_i
+
+      (min..max).map { |m| base ** m }.to_a
+    end
+
+    ##
+    # Returns a set of ranges stepped linearly from +min+ to +max+ by
+    # +step+. Eg:
+    #
+    #   bench_linear(20, 40, 10) # => [20, 30, 40]
+
+    def self.bench_linear min, max, step = 10
+      (min..max).step(step).to_a
+    rescue LocalJumpError # 1.8.6
+      r = []; (min..max).step(step) { |n| r << n }; r
+    end
+
+    ##
+    # Specifies the ranges used for benchmarking for that class.
+    # Defaults to exponential growth from 1 to 10k by powers of 10.
+    # Override if you need different ranges for your benchmarks.
+    #
+    # See also: ::bench_exp and ::bench_linear.
+
+    def self.bench_range
+      bench_exp 1, 10_000
+    end
+
+    ##
+    # Runs the given +work+, gathering the times of each run. Range
+    # and times are then passed to a given +validation+ proc. Outputs
+    # the benchmark name and times in tab-separated format, making it
+    # easy to paste into a spreadsheet for graphing or further
+    # analysis.
+    #
+    # Ranges are specified by ::bench_range.
+    #
+    # Eg:
+    #
+    #   def bench_algorithm
+    #     validation = proc { |x, y| ... }
+    #     assert_performance validation do |n|
+    #       @obj.algorithm(n)
+    #     end
+    #   end
+
+    def assert_performance validation, &work
+      range = self.class.bench_range
+
+      io.print "#{self.name}"
+
+      times = []
+
+      range.each_await do |x|
+        GC.start
+        t0 = Time.now
+        instance_exec(x, &work).await
+        t = Time.now - t0
+
+        io.print "\t%9.6f" % t
+        times << t
+      end
+      io.puts
+
+      validation[range, times]
+    end
+
+    ##
+    # Runs the given +work+ and asserts that the times gathered fit to
+    # match a constant rate (eg, linear slope == 0) within a given
+    # +threshold+. Note: because we're testing for a slope of 0, R^2
+    # is not a good determining factor for the fit, so the threshold
+    # is applied against the slope itself. As such, you probably want
+    # to tighten it from the default.
+    #
+    # See http://www.graphpad.com/curvefit/goodness_of_fit.htm for
+    # more details.
+    #
+    # Fit is calculated by #fit_linear.
+    #
+    # Ranges are specified by ::bench_range.
+    #
+    # Eg:
+    #
+    #   def bench_algorithm
+    #     assert_performance_constant 0.9999 do |n|
+    #       @obj.algorithm(n)
+    #     end
+    #   end
+
+    def assert_performance_constant threshold = 0.99, &work
+      validation = proc do |range, times|
+        a, b, rr = fit_linear range, times
+        assert_in_delta 0, b, 1 - threshold
+        [a, b, rr]
+      end
+
+      assert_performance(validation, &work).await
+    end
+
+    ##
+    # Runs the given +work+ and asserts that the times gathered fit to
+    # match a exponential curve within a given error +threshold+.
+    #
+    # Fit is calculated by #fit_exponential.
+    #
+    # Ranges are specified by ::bench_range.
+    #
+    # Eg:
+    #
+    #   def bench_algorithm
+    #     assert_performance_exponential 0.9999 do |n|
+    #       @obj.algorithm(n)
+    #     end
+    #   end
+
+    def assert_performance_exponential threshold = 0.99, &work
+      assert_performance(validation_for_fit(:exponential, threshold), &work).await
+    end
+
+    ##
+    # Runs the given +work+ and asserts that the times gathered fit to
+    # match a logarithmic curve within a given error +threshold+.
+    #
+    # Fit is calculated by #fit_logarithmic.
+    #
+    # Ranges are specified by ::bench_range.
+    #
+    # Eg:
+    #
+    #   def bench_algorithm
+    #     assert_performance_logarithmic 0.9999 do |n|
+    #       @obj.algorithm(n)
+    #     end
+    #   end
+
+    def assert_performance_logarithmic threshold = 0.99, &work
+      assert_performance(validation_for_fit(:logarithmic, threshold), &work).await
+    end
+
+    ##
+    # Runs the given +work+ and asserts that the times gathered fit to
+    # match a straight line within a given error +threshold+.
+    #
+    # Fit is calculated by #fit_linear.
+    #
+    # Ranges are specified by ::bench_range.
+    #
+    # Eg:
+    #
+    #   def bench_algorithm
+    #     assert_performance_linear 0.9999 do |n|
+    #       @obj.algorithm(n)
+    #     end
+    #   end
+
+    def assert_performance_linear threshold = 0.99, &work
+      assert_performance(validation_for_fit(:linear, threshold), &work).await
+    end
+
+    ##
+    # Runs the given +work+ and asserts that the times gathered curve
+    # fit to match a power curve within a given error +threshold+.
+    #
+    # Fit is calculated by #fit_power.
+    #
+    # Ranges are specified by ::bench_range.
+    #
+    # Eg:
+    #
+    #   def bench_algorithm
+    #     assert_performance_power 0.9999 do |x|
+    #       @obj.algorithm
+    #     end
+    #   end
+
+    def assert_performance_power threshold = 0.99, &work
+      assert_performance(validation_for_fit(:power, threshold), &work).await
+    end
+
+    ##
+    # Takes an array of x/y pairs and calculates the general R^2 value.
+    #
+    # See: http://en.wikipedia.org/wiki/Coefficient_of_determination
+
+    def fit_error xys
+      y_bar  = sigma(xys) { |x, y| y } / xys.size.to_f
+      ss_tot = sigma(xys) { |x, y| (y    - y_bar) ** 2 }
+      ss_err = sigma(xys) { |x, y| (yield(x) - y) ** 2 }
+
+      1 - (ss_err / ss_tot)
+    end
+
+    ##
+    # To fit a functional form: y = ae^(bx).
+    #
+    # Takes x and y values and returns [a, b, r^2].
+    #
+    # See: http://mathworld.wolfram.com/LeastSquaresFittingExponential.html
+
+    def fit_exponential xs, ys
+      n     = xs.size
+      xys   = xs.zip(ys)
+      sxlny = sigma(xys) { |x,y| x * Math.log(y) }
+      slny  = sigma(xys) { |x,y| Math.log(y)     }
+      sx2   = sigma(xys) { |x,y| x * x           }
+      sx    = sigma xs
+
+      c = n * sx2 - sx ** 2
+      a = (slny * sx2 - sx * sxlny) / c
+      b = ( n * sxlny - sx * slny ) / c
+
+      return Math.exp(a), b, fit_error(xys) { |x| Math.exp(a + b * x) }
+    end
+
+    ##
+    # To fit a functional form: y = a + b*ln(x).
+    #
+    # Takes x and y values and returns [a, b, r^2].
+    #
+    # See: http://mathworld.wolfram.com/LeastSquaresFittingLogarithmic.html
+
+    def fit_logarithmic xs, ys
+      n     = xs.size
+      xys   = xs.zip(ys)
+      slnx2 = sigma(xys) { |x,y| Math.log(x) ** 2 }
+      slnx  = sigma(xys) { |x,y| Math.log(x)      }
+      sylnx = sigma(xys) { |x,y| y * Math.log(x)  }
+      sy    = sigma(xys) { |x,y| y                }
+
+      c = n * slnx2 - slnx ** 2
+      b = ( n * sylnx - sy * slnx ) / c
+      a = (sy - b * slnx) / n
+
+      return a, b, fit_error(xys) { |x| a + b * Math.log(x) }
+    end
+
+
+    ##
+    # Fits the functional form: a + bx.
+    #
+    # Takes x and y values and returns [a, b, r^2].
+    #
+    # See: http://mathworld.wolfram.com/LeastSquaresFitting.html
+
+    def fit_linear xs, ys
+      n   = xs.size
+      xys = xs.zip(ys)
+      sx  = sigma xs
+      sy  = sigma ys
+      sx2 = sigma(xs)  { |x|   x ** 2 }
+      sxy = sigma(xys) { |x,y| x * y  }
+
+      c = n * sx2 - sx**2
+      a = (sy * sx2 - sx * sxy) / c
+      b = ( n * sxy - sx * sy ) / c
+
+      return a, b, fit_error(xys) { |x| a + b * x }
+    end
+
+    ##
+    # To fit a functional form: y = ax^b.
+    #
+    # Takes x and y values and returns [a, b, r^2].
+    #
+    # See: http://mathworld.wolfram.com/LeastSquaresFittingPowerLaw.html
+
+    def fit_power xs, ys
+      n       = xs.size
+      xys     = xs.zip(ys)
+      slnxlny = sigma(xys) { |x, y| Math.log(x) * Math.log(y) }
+      slnx    = sigma(xs)  { |x   | Math.log(x)               }
+      slny    = sigma(ys)  { |   y| Math.log(y)               }
+      slnx2   = sigma(xs)  { |x   | Math.log(x) ** 2          }
+
+      b = (n * slnxlny - slnx * slny) / (n * slnx2 - slnx ** 2);
+      a = (slny - b * slnx) / n
+
+      return Math.exp(a), b, fit_error(xys) { |x| (Math.exp(a) * (x ** b)) }
+    end
+
+    ##
+    # Enumerates over +enum+ mapping +block+ if given, returning the
+    # sum of the result. Eg:
+    #
+    #   sigma([1, 2, 3])                # => 1 + 2 + 3 => 7
+    #   sigma([1, 2, 3]) { |n| n ** 2 } # => 1 + 4 + 9 => 14
+
+    def sigma enum, &block
+      enum = enum.map(&block) if block
+      enum.inject { |sum, n| sum + n }
+    end
+
+    ##
+    # Returns a proc that calls the specified fit method and asserts
+    # that the error is within a tolerable threshold.
+
+    def validation_for_fit msg, threshold
+      proc do |range, times|
+        a, b, rr = send "fit_#{msg}", range, times
+        assert_operator rr, :>=, threshold
+        [a, b, rr]
+      end
+    end
+  end
+end
+
+module Minitest
+  ##
+  # The spec version of Minitest::Benchmark.
+
+  class BenchSpec < Benchmark
+    extend Minitest::Spec::DSL
+
+    ##
+    # This is used to define a new benchmark method. You usually don't
+    # use this directly and is intended for those needing to write new
+    # performance curve fits (eg: you need a specific polynomial fit).
+    #
+    # See ::bench_performance_linear for an example of how to use this.
+
+    def self.bench name, &block
+      define_method "bench_#{name.gsub(/\W+/, '_')}", &block
+    end
+
+    ##
+    # Specifies the ranges used for benchmarking for that class.
+    #
+    #   bench_range do
+    #     bench_exp(2, 16, 2)
+    #   end
+    #
+    # See Minitest::Benchmark#bench_range for more details.
+
+    def self.bench_range &block
+      return super unless block
+
+      meta = (class << self; self; end)
+      meta.send :define_method, "bench_range", &block
+    end
+
+    ##
+    # Create a benchmark that verifies that the performance is linear.
+    #
+    #   describe "my class Bench" do
+    #     bench_performance_linear "fast_algorithm", 0.9999 do |n|
+    #       @obj.fast_algorithm(n)
+    #     end
+    #   end
+
+    def self.bench_performance_linear name, threshold = 0.99, &work
+      bench name do
+        assert_performance_linear threshold, &work
+      end
+    end
+
+    ##
+    # Create a benchmark that verifies that the performance is constant.
+    #
+    #   describe "my class Bench" do
+    #     bench_performance_constant "zoom_algorithm!" do |n|
+    #       @obj.zoom_algorithm!(n)
+    #     end
+    #   end
+
+    def self.bench_performance_constant name, threshold = 0.99, &work
+      bench name do
+        assert_performance_constant threshold, &work
+      end
+    end
+
+    ##
+    # Create a benchmark that verifies that the performance is exponential.
+    #
+    #   describe "my class Bench" do
+    #     bench_performance_exponential "algorithm" do |n|
+    #       @obj.algorithm(n)
+    #     end
+    #   end
+
+    def self.bench_performance_exponential name, threshold = 0.99, &work
+      bench name do
+        assert_performance_exponential threshold, &work
+      end
+    end
+  end
+
+  Minitest::Spec.register_spec_type(/Bench(mark)?$/, Minitest::BenchSpec)
+end
diff --git a/vendored-minitest/minitest/expectations.rb b/vendored-minitest/minitest/expectations.rb
new file mode 100644
index 00000000..210ef2ab
--- /dev/null
+++ b/vendored-minitest/minitest/expectations.rb
@@ -0,0 +1,281 @@
+##
+# It's where you hide your "assertions".
+#
+# Please note, because of the way that expectations are implemented,
+# all expectations (eg must_equal) are dependent upon a thread local
+# variable +:current_spec+. If your specs rely on mixing threads into
+# the specs themselves, you're better off using assertions. For
+# example:
+#
+#     it "should still work in threads" do
+#       my_threaded_thingy do
+#         (1+1).must_equal 2  # bad
+#         assert_equal 2, 1+1 # good
+#       end
+#     end
+
+module Minitest::Expectations
+  ##
+  # See Minitest::Assertions#assert_empty.
+  #
+  #    collection.must_be_empty
+  #
+  # :method: must_be_empty
+
+  infect_an_assertion :assert_empty, :must_be_empty, :unary
+
+  ##
+  # See Minitest::Assertions#assert_equal
+  #
+  #    a.must_equal b
+  #
+  # :method: must_equal
+
+  infect_an_assertion :assert_equal, :must_equal
+
+  ##
+  # See Minitest::Assertions#assert_in_delta
+  #
+  #    n.must_be_close_to m [, delta]
+  #
+  # :method: must_be_close_to
+
+  infect_an_assertion :assert_in_delta, :must_be_close_to
+
+  alias :must_be_within_delta :must_be_close_to # :nodoc:
+
+  ##
+  # See Minitest::Assertions#assert_in_epsilon
+  #
+  #    n.must_be_within_epsilon m [, epsilon]
+  #
+  # :method: must_be_within_epsilon
+
+  infect_an_assertion :assert_in_epsilon, :must_be_within_epsilon
+
+  ##
+  # See Minitest::Assertions#assert_includes
+  #
+  #    collection.must_include obj
+  #
+  # :method: must_include
+
+  infect_an_assertion :assert_includes, :must_include, :reverse
+
+  ##
+  # See Minitest::Assertions#assert_instance_of
+  #
+  #    obj.must_be_instance_of klass
+  #
+  # :method: must_be_instance_of
+
+  infect_an_assertion :assert_instance_of, :must_be_instance_of
+
+  ##
+  # See Minitest::Assertions#assert_kind_of
+  #
+  #    obj.must_be_kind_of mod
+  #
+  # :method: must_be_kind_of
+
+  infect_an_assertion :assert_kind_of, :must_be_kind_of
+
+  ##
+  # See Minitest::Assertions#assert_match
+  #
+  #    a.must_match b
+  #
+  # :method: must_match
+
+  infect_an_assertion :assert_match, :must_match
+
+  ##
+  # See Minitest::Assertions#assert_nil
+  #
+  #    obj.must_be_nil
+  #
+  # :method: must_be_nil
+
+  infect_an_assertion :assert_nil, :must_be_nil, :unary
+
+  ##
+  # See Minitest::Assertions#assert_operator
+  #
+  #    n.must_be :<=, 42
+  #
+  # This can also do predicates:
+  #
+  #    str.must_be :empty?
+  #
+  # :method: must_be
+
+  infect_an_assertion :assert_operator, :must_be, :reverse
+
+  ##
+  # See Minitest::Assertions#assert_output
+  #
+  #    proc { ... }.must_output out_or_nil [, err]
+  #
+  # :method: must_output
+
+  infect_an_assertion :assert_output, :must_output
+
+  ##
+  # See Minitest::Assertions#assert_raises
+  #
+  #    proc { ... }.must_raise exception
+  #
+  # :method: must_raise
+
+  infect_an_assertion :assert_raises, :must_raise
+
+  ##
+  # See Minitest::Assertions#assert_respond_to
+  #
+  #    obj.must_respond_to msg
+  #
+  # :method: must_respond_to
+
+  infect_an_assertion :assert_respond_to, :must_respond_to, :reverse
+
+  ##
+  # See Minitest::Assertions#assert_same
+  #
+  #    a.must_be_same_as b
+  #
+  # :method: must_be_same_as
+
+  infect_an_assertion :assert_same, :must_be_same_as
+
+  ##
+  # See Minitest::Assertions#assert_silent
+  #
+  #    proc { ... }.must_be_silent
+  #
+  # :method: must_be_silent
+
+  infect_an_assertion :assert_silent, :must_be_silent
+
+  ##
+  # See Minitest::Assertions#assert_throws
+  #
+  #    proc { ... }.must_throw sym
+  #
+  # :method: must_throw
+
+  infect_an_assertion :assert_throws, :must_throw
+
+  ##
+  # See Minitest::Assertions#refute_empty
+  #
+  #    collection.wont_be_empty
+  #
+  # :method: wont_be_empty
+
+  infect_an_assertion :refute_empty, :wont_be_empty, :unary
+
+  ##
+  # See Minitest::Assertions#refute_equal
+  #
+  #    a.wont_equal b
+  #
+  # :method: wont_equal
+
+  infect_an_assertion :refute_equal, :wont_equal
+
+  ##
+  # See Minitest::Assertions#refute_in_delta
+  #
+  #    n.wont_be_close_to m [, delta]
+  #
+  # :method: wont_be_close_to
+
+  infect_an_assertion :refute_in_delta, :wont_be_close_to
+
+  alias :wont_be_within_delta :wont_be_close_to # :nodoc:
+
+  ##
+  # See Minitest::Assertions#refute_in_epsilon
+  #
+  #    n.wont_be_within_epsilon m [, epsilon]
+  #
+  # :method: wont_be_within_epsilon
+
+  infect_an_assertion :refute_in_epsilon, :wont_be_within_epsilon
+
+  ##
+  # See Minitest::Assertions#refute_includes
+  #
+  #    collection.wont_include obj
+  #
+  # :method: wont_include
+
+  infect_an_assertion :refute_includes, :wont_include, :reverse
+
+  ##
+  # See Minitest::Assertions#refute_instance_of
+  #
+  #    obj.wont_be_instance_of klass
+  #
+  # :method: wont_be_instance_of
+
+  infect_an_assertion :refute_instance_of, :wont_be_instance_of
+
+  ##
+  # See Minitest::Assertions#refute_kind_of
+  #
+  #    obj.wont_be_kind_of mod
+  #
+  # :method: wont_be_kind_of
+
+  infect_an_assertion :refute_kind_of, :wont_be_kind_of
+
+  ##
+  # See Minitest::Assertions#refute_match
+  #
+  #    a.wont_match b
+  #
+  # :method: wont_match
+
+  infect_an_assertion :refute_match, :wont_match
+
+  ##
+  # See Minitest::Assertions#refute_nil
+  #
+  #    obj.wont_be_nil
+  #
+  # :method: wont_be_nil
+
+  infect_an_assertion :refute_nil, :wont_be_nil, :unary
+
+  ##
+  # See Minitest::Assertions#refute_operator
+  #
+  #    n.wont_be :<=, 42
+  #
+  # This can also do predicates:
+  #
+  #    str.wont_be :empty?
+  #
+  # :method: wont_be
+
+  infect_an_assertion :refute_operator, :wont_be, :reverse
+
+  ##
+  # See Minitest::Assertions#refute_respond_to
+  #
+  #    obj.wont_respond_to msg
+  #
+  # :method: wont_respond_to
+
+  infect_an_assertion :refute_respond_to, :wont_respond_to, :reverse
+
+  ##
+  # See Minitest::Assertions#refute_same
+  #
+  #    a.wont_be_same_as b
+  #
+  # :method: wont_be_same_as
+
+  infect_an_assertion :refute_same, :wont_be_same_as
+end
diff --git a/vendored-minitest/minitest/mock.rb b/vendored-minitest/minitest/mock.rb
new file mode 100644
index 00000000..bc07671a
--- /dev/null
+++ b/vendored-minitest/minitest/mock.rb
@@ -0,0 +1,220 @@
+class MockExpectationError < StandardError; end # :nodoc:
+
+module Minitest # :nodoc:
+
+  ##
+  # A simple and clean mock object framework.
+  #
+  # All mock objects are an instance of Mock
+
+  class Mock
+    alias :__respond_to? :respond_to?
+
+    overridden_methods = %w(
+      ===
+      inspect
+      object_id
+      public_send
+      respond_to_missing?
+      send
+      to_s
+    )
+
+    instance_methods.each do |m|
+      undef_method m unless overridden_methods.include?(m.to_s) || m =~ /^__/
+    end
+
+    overridden_methods.map(&:to_sym).each do |method_id|
+      define_method method_id do |*args, &b|
+        if @expected_calls.has_key? method_id then
+          method_missing(method_id, *args, &b)
+        else
+          super(*args, &b)
+        end
+      end
+    end
+
+    def initialize # :nodoc:
+      @expected_calls = Hash.new { |calls, name| calls[name] = [] }
+      @actual_calls   = Hash.new { |calls, name| calls[name] = [] }
+    end
+
+    ##
+    # Expect that method +name+ is called, optionally with +args+ or a
+    # +blk+, and returns +retval+.
+    #
+    #   @mock.expect(:meaning_of_life, 42)
+    #   @mock.meaning_of_life # => 42
+    #
+    #   @mock.expect(:do_something_with, true, [some_obj, true])
+    #   @mock.do_something_with(some_obj, true) # => true
+    #
+    #   @mock.expect(:do_something_else, true) do |a1, a2|
+    #     a1 == "buggs" && a2 == :bunny
+    #   end
+    #
+    # +args+ is compared to the expected args using case equality (ie, the
+    # '===' operator), allowing for less specific expectations.
+    #
+    #   @mock.expect(:uses_any_string, true, [String])
+    #   @mock.uses_any_string("foo") # => true
+    #   @mock.verify  # => true
+    #
+    #   @mock.expect(:uses_one_string, true, ["foo"])
+    #   @mock.uses_one_string("bar") # => true
+    #   @mock.verify  # => raises MockExpectationError
+
+    def expect(name, retval, args=[], &blk)
+      name = name.to_sym
+
+      if block_given?
+        raise ArgumentError, "args ignored when block given" unless args.empty?
+        @expected_calls[name] << { :retval => retval, :block => blk }
+      else
+        raise ArgumentError, "args must be an array" unless Array === args
+        @expected_calls[name] << { :retval => retval, :args => args }
+      end
+      self
+    end
+
+    def __call name, data # :nodoc:
+      case data
+      when Hash then
+        "#{name}(#{data[:args].inspect[1..-2]}) => #{data[:retval].inspect}"
+      else
+        data.map { |d| __call name, d }.join ", "
+      end
+    end
+
+    ##
+    # Verify that all methods were called as expected. Raises
+    # +MockExpectationError+ if the mock object was not called as
+    # expected.
+
+    def verify
+      @expected_calls.each do |name, calls|
+        calls.each do |expected|
+          msg1 = "expected #{__call name, expected}"
+          msg2 = "#{msg1}, got [#{__call name, @actual_calls[name]}]"
+
+          raise MockExpectationError, msg2 if
+            @actual_calls.has_key?(name) and
+            not @actual_calls[name].include?(expected)
+
+          raise MockExpectationError, msg1 unless
+            @actual_calls.has_key?(name) and
+            @actual_calls[name].include?(expected)
+        end
+      end
+      true
+    end
+
+    def method_missing(sym, *args, &block) # :nodoc:
+      unless @expected_calls.has_key?(sym) then
+        raise NoMethodError, "unmocked method %p, expected one of %p" %
+          [sym, @expected_calls.keys.sort_by(&:to_s)]
+      end
+
+      index = @actual_calls[sym].length
+      expected_call = @expected_calls[sym][index]
+
+      unless expected_call then
+        raise MockExpectationError, "No more expects available for %p: %p" %
+          [sym, args]
+      end
+
+      expected_args, retval, val_block =
+        expected_call.values_at(:args, :retval, :block)
+
+      if val_block then
+        raise MockExpectationError, "mocked method %p failed block w/ %p" %
+          [sym, args] unless val_block.call(*args, &block)
+
+        # keep "verify" happy
+        @actual_calls[sym] << expected_call
+        return retval
+      end
+
+      if expected_args.size != args.size then
+        raise ArgumentError, "mocked method %p expects %d arguments, got %d" %
+          [sym, expected_args.size, args.size]
+      end
+
+      fully_matched = expected_args.zip(args).all? { |mod, a|
+        mod === a or mod == a
+      }
+
+      unless fully_matched then
+        raise MockExpectationError, "mocked method %p called with unexpected arguments %p" %
+          [sym, args]
+      end
+
+      @actual_calls[sym] << {
+        :retval => retval,
+        :args => expected_args.zip(args).map { |mod, a| mod === a ? mod : a }
+      }
+
+      retval
+    end
+
+    def respond_to?(sym, include_private = false) # :nodoc:
+      return true if @expected_calls.has_key? sym.to_sym
+      return __respond_to?(sym, include_private)
+    end
+  end
+end
+
+class Object # :nodoc:
+
+  ##
+  # Add a temporary stubbed method replacing +name+ for the duration
+  # of the +block+. If +val_or_callable+ responds to #call, then it
+  # returns the result of calling it, otherwise returns the value
+  # as-is. If stubbed method yields a block, +block_args+ will be
+  # passed along. Cleans up the stub at the end of the +block+. The
+  # method +name+ must exist before stubbing.
+  #
+  #     def test_stale_eh
+  #       obj_under_test = Something.new
+  #       refute obj_under_test.stale?
+  #
+  #       Time.stub :now, Time.at(0) do
+  #         assert obj_under_test.stale?
+  #       end
+  #     end
+  #
+
+  def stub name, val_or_callable, *block_args, &block
+    new_name = "__minitest_stub__#{name}"
+
+    metaclass = class << self; self; end
+
+    if respond_to? name and not methods.map(&:to_s).include? name.to_s then
+      metaclass.send :define_method, name do |*args|
+        super(*args)
+      end
+    end
+
+    metaclass.send :alias_method, new_name, name
+
+    metaclass.send :define_method, name do |*args, &blk|
+
+      ret = if val_or_callable.respond_to? :call then
+        val_or_callable.call(*args)
+      else
+        val_or_callable
+      end
+
+      blk.call(*block_args) if blk
+
+      ret
+    end
+
+    yield self
+  ensure
+    metaclass.send :undef_method, name
+    metaclass.send :alias_method, name, new_name
+    metaclass.send :undef_method, new_name
+  end
+
+end
diff --git a/vendored-minitest/minitest/spec.rb b/vendored-minitest/minitest/spec.rb
new file mode 100644
index 00000000..8755fe61
--- /dev/null
+++ b/vendored-minitest/minitest/spec.rb
@@ -0,0 +1,310 @@
+require "minitest/test"
+
+class Module # :nodoc:
+  def infect_an_assertion meth, new_name, dont_flip = false # :nodoc:
+    # warn "%-22p -> %p %p" % [meth, new_name, dont_flip]
+    dont_flip = !!dont_flip
+    self.class_eval do
+      define_method(new_name) do |*args|
+        case
+        when dont_flip
+          Minitest::Spec.current.send(meth, self, *args)
+        when Proc === self
+          Minitest::Spec.current.send(meth, *args, &self)
+        else
+          Minitest::Spec.current.send(meth, args.first, self, *args[1..-1])
+        end
+      end
+    end
+
+    # <<-EOM
+    #   def #{new_name} *args
+    #     case
+    #     when #{dont_flip} then
+    #       Minitest::Spec.current.#{meth}(self, *args)
+    #     when Proc === self then
+    #       Minitest::Spec.current.#{meth}(*args, &self)
+    #     else
+    #       Minitest::Spec.current.#{meth}(args.first, self, *args[1..-1])
+    #     end
+    #   end
+    # EOM
+  end
+end
+
+module Kernel # :nodoc:
+  ##
+  # Describe a series of expectations for a given target +desc+.
+  #
+  # Defines a test class subclassing from either Minitest::Spec or
+  # from the surrounding describe's class. The surrounding class may
+  # subclass Minitest::Spec manually in order to easily share code:
+  #
+  #     class MySpec < Minitest::Spec
+  #       # ... shared code ...
+  #     end
+  #
+  #     class TestStuff < MySpec
+  #       it "does stuff" do
+  #         # shared code available here
+  #       end
+  #       describe "inner stuff" do
+  #         it "still does stuff" do
+  #           # ...and here
+  #         end
+  #       end
+  #     end
+  #
+  # For more information on getting started with writing specs, see:
+  #
+  # http://www.rubyinside.com/a-minitestspec-tutorial-elegant-spec-style-testing-that-comes-with-ruby-5354.html
+  #
+  # For some suggestions on how to improve your specs, try:
+  #
+  # http://betterspecs.org
+  #
+  # but do note that several items there are debatable or specific to
+  # rspec.
+  #
+  # For more information about expectations, see Minitest::Expectations.
+
+  def describe desc, *additional_desc, &block # :doc:
+    stack = Minitest::Spec.describe_stack
+    name  = [stack.last, desc, *additional_desc].compact.join("::")
+    sclas = stack.last || if Class === self && is_a?(Minitest::Spec::DSL) then
+                            self
+                          else
+                            Minitest::Spec.spec_type desc, *additional_desc
+                          end
+
+    cls = sclas.create name, desc
+
+    stack.push cls
+    cls.class_eval(&block)
+    stack.pop
+    cls
+  end
+  private :describe
+end
+
+##
+# Minitest::Spec -- The faster, better, less-magical spec framework!
+#
+# For a list of expectations, see Minitest::Expectations.
+
+class Minitest::Spec < Minitest::Test
+
+  def self.current # :nodoc:
+    Thread.current[:current_spec]
+  end
+
+  def initialize name # :nodoc:
+    super
+    Thread.current[:current_spec] = self
+  end
+
+  ##
+  # Oh look! A Minitest::Spec::DSL module! Eat your heart out DHH.
+
+  module DSL
+    ##
+    # Contains pairs of matchers and Spec classes to be used to
+    # calculate the superclass of a top-level describe. This allows for
+    # automatically customizable spec types.
+    #
+    # See: register_spec_type and spec_type
+
+    TYPES = [[//, Minitest::Spec]]
+
+    ##
+    # Register a new type of spec that matches the spec's description.
+    # This method can take either a Regexp and a spec class or a spec
+    # class and a block that takes the description and returns true if
+    # it matches.
+    #
+    # Eg:
+    #
+    #     register_spec_type(/Controller$/, Minitest::Spec::Rails)
+    #
+    # or:
+    #
+    #     register_spec_type(Minitest::Spec::RailsModel) do |desc|
+    #       desc.superclass == ActiveRecord::Base
+    #     end
+
+    def register_spec_type(*args, &block)
+      if block then
+        matcher, klass = block, args.first
+      else
+        matcher, klass = *args
+      end
+      TYPES.unshift [matcher, klass]
+    end
+
+    ##
+    # Figure out the spec class to use based on a spec's description. Eg:
+    #
+    #     spec_type("BlahController") # => Minitest::Spec::Rails
+
+    def spec_type desc, *additional
+      TYPES.find { |matcher, klass|
+        if matcher.respond_to? :call then
+          matcher.call desc, *additional
+        else
+          matcher === desc.to_s
+        end
+      }.last
+    end
+
+    def describe_stack # :nodoc:
+      Thread.current[:describe_stack] ||= []
+    end
+
+    ##
+    # Returns the children of this spec.
+
+    def children
+      @children ||= []
+    end
+
+    def nuke_test_methods! # :nodoc:
+      self.public_instance_methods.grep(/^test_/).each do |name|
+        self.send :undef_method, name
+      end
+    end
+
+    ##
+    # Define a 'before' action. Inherits the way normal methods should.
+    #
+    # NOTE: +type+ is ignored and is only there to make porting easier.
+    #
+    # Equivalent to Minitest::Test#setup.
+
+    def before type = nil, &block
+      define_method :setup do
+        super()
+        self.instance_eval(&block)
+      end
+    end
+
+    ##
+    # Define an 'after' action. Inherits the way normal methods should.
+    #
+    # NOTE: +type+ is ignored and is only there to make porting easier.
+    #
+    # Equivalent to Minitest::Test#teardown.
+
+    def after type = nil, &block
+      define_method :teardown do
+        self.instance_eval(&block)
+        super()
+      end
+    end
+
+    ##
+    # Define an expectation with name +desc+. Name gets morphed to a
+    # proper test method name. For some freakish reason, people who
+    # write specs don't like class inheritance, so this goes way out of
+    # its way to make sure that expectations aren't inherited.
+    #
+    # This is also aliased to #specify and doesn't require a +desc+ arg.
+    #
+    # Hint: If you _do_ want inheritance, use minitest/test. You can mix
+    # and match between assertions and expectations as much as you want.
+
+    def it desc = "anonymous", &block
+      block ||= proc { skip "(no tests defined)" }
+
+      @specs ||= 0
+      @specs += 1
+
+      name = "test_%04d_%s" % [ @specs, desc ]
+
+      undef_klasses = self.children.reject { |c| c.public_method_defined? name }
+
+      define_method name, &block
+
+      undef_klasses.each do |undef_klass|
+        undef_klass.send :undef_method, name
+      end
+
+      name
+    end
+
+    ##
+    # Essentially, define an accessor for +name+ with +block+.
+    #
+    # Why use let instead of def? I honestly don't know.
+
+    def let name, &block
+      name = name.to_s
+      pre, post = "let '#{name}' cannot ", ". Please use another name."
+      methods = Minitest::Spec.instance_methods.map(&:to_s) - %w[subject]
+      raise ArgumentError, "#{pre}begin with 'test'#{post}" if
+        name =~ /\Atest/
+      raise ArgumentError, "#{pre}override a method in Minitest::Spec#{post}" if
+        methods.include? name
+
+      define_method name do
+        @_memoized ||= {}
+        @_memoized.fetch(name) { |k| @_memoized[k] = instance_eval(&block) }
+      end
+    end
+
+    ##
+    # Another lazy man's accessor generator. Made even more lazy by
+    # setting the name for you to +subject+.
+
+    def subject &block
+      let :subject, &block
+    end
+
+    def create name, desc # :nodoc:
+      cls = Class.new(self) do
+        @name = name
+        @desc = desc
+
+        nuke_test_methods!
+      end
+
+      children << cls
+
+      cls
+    end
+
+    def name # :nodoc:
+      defined?(@name) ? @name : super
+    end
+
+    def to_s # :nodoc:
+      name # Can't alias due to 1.8.7, not sure why
+    end
+
+    # :stopdoc:
+    attr_reader :desc
+    alias :specify :it
+
+    module InstanceMethods
+      def before_setup
+        super
+        Thread.current[:current_spec] = self
+      end
+    end
+
+    def self.extended obj
+      obj.send :include, InstanceMethods
+    end
+
+    # :startdoc:
+  end
+
+  extend DSL
+
+  TYPES = DSL::TYPES # :nodoc:
+end
+
+require "minitest/expectations"
+
+class Object # :nodoc:
+  include Minitest::Expectations unless ENV["MT_NO_EXPECTATIONS"]
+end
diff --git a/vendored-minitest/minitest/test.rb b/vendored-minitest/minitest/test.rb
new file mode 100644
index 00000000..785ed8c3
--- /dev/null
+++ b/vendored-minitest/minitest/test.rb
@@ -0,0 +1,287 @@
+# await: *await*
+
+require "minitest" unless defined? Minitest::Runnable
+
+module Minitest
+  ##
+  # Subclass Test to create your own tests. Typically you'll want a
+  # Test subclass per implementation class.
+  #
+  # See Minitest::Assertions
+
+  class Test < Runnable
+    require "minitest/assertions"
+    include Minitest::Assertions
+
+    PASSTHROUGH_EXCEPTIONS = [NoMemoryError, SignalException, # :nodoc:
+                              Interrupt, SystemExit]
+
+    class << self; attr_accessor :io_lock; end # :nodoc:
+    self.io_lock = Mutex.new
+
+    ##
+    # Call this at the top of your tests when you absolutely
+    # positively need to have ordered tests. In doing so, you're
+    # admitting that you suck and your tests are weak.
+
+    def self.i_suck_and_my_tests_are_order_dependent!
+      class << self
+        undef_method :test_order if method_defined? :test_order
+        define_method :test_order do :alpha end
+      end
+    end
+
+    ##
+    # Make diffs for this Test use #pretty_inspect so that diff
+    # in assert_equal can have more details. NOTE: this is much slower
+    # than the regular inspect but much more usable for complex
+    # objects.
+
+    def self.make_my_diffs_pretty!
+      require "pp"
+
+      define_method :mu_pp do |o|
+        o.pretty_inspect
+      end
+    end
+
+    ##
+    # Call this at the top of your tests when you want to run your
+    # tests in parallel. In doing so, you're admitting that you rule
+    # and your tests are awesome.
+
+    def self.parallelize_me!
+      include Minitest::Parallel::Test
+      extend Minitest::Parallel::Test::ClassMethods
+    end
+
+    ##
+    # Returns all instance methods starting with "test_". Based on
+    # #test_order, the methods are either sorted, randomized
+    # (default), or run in parallel.
+
+    def self.runnable_methods
+      methods = methods_matching(/^test_/)
+
+      case self.test_order
+      when :random, :parallel then
+        max = methods.size
+        methods.sort.sort_by { rand max }
+      when :alpha, :sorted then
+        methods.sort
+      else
+        raise "Unknown test_order: #{self.test_order.inspect}"
+      end
+    end
+
+    ##
+    # Defines the order to run tests (:random by default). Override
+    # this or use a convenience method to change it for your tests.
+
+    def self.test_order
+      :random
+    end
+
+    ##
+    # The time it took to run this test.
+
+    attr_accessor :time
+
+    def marshal_dump # :nodoc:
+      super << self.time
+    end
+
+    def marshal_load ary # :nodoc:
+      self.time = ary.pop
+      super
+    end
+
+    TEARDOWN_METHODS = %w{ before_teardown teardown after_teardown } # :nodoc:
+
+    ##
+    # Runs a single test with setup/teardown hooks.
+
+    def run
+      with_info_handler do
+        time_it do
+          capture_exceptions do
+            before_setup; setup; after_setup
+
+            self.send(self.name).await
+          end.await
+
+          TEARDOWN_METHODS.each_await do |hook|
+            capture_exceptions do
+              self.send(hook).await
+            end.await
+          end.await
+        end.await
+      end.await
+
+      self # per contract
+    end
+
+    ##
+    # Provides before/after hooks for setup and teardown. These are
+    # meant for library writers, NOT for regular test authors. See
+    # #before_setup for an example.
+
+    module LifecycleHooks
+
+      ##
+      # Runs before every test, before setup. This hook is meant for
+      # libraries to extend minitest. It is not meant to be used by
+      # test developers.
+      #
+      # As a simplistic example:
+      #
+      #   module MyMinitestPlugin
+      #     def before_setup
+      #       super
+      #       # ... stuff to do before setup is run
+      #     end
+      #
+      #     def after_setup
+      #       # ... stuff to do after setup is run
+      #       super
+      #     end
+      #
+      #     def before_teardown
+      #       super
+      #       # ... stuff to do before teardown is run
+      #     end
+      #
+      #     def after_teardown
+      #       # ... stuff to do after teardown is run
+      #       super
+      #     end
+      #   end
+      #
+      #   class MiniTest::Test
+      #     include MyMinitestPlugin
+      #   end
+
+      def before_setup; end
+
+      ##
+      # Runs before every test. Use this to set up before each test
+      # run.
+
+      def setup; end
+
+      ##
+      # Runs before every test, after setup. This hook is meant for
+      # libraries to extend minitest. It is not meant to be used by
+      # test developers.
+      #
+      # See #before_setup for an example.
+
+      def after_setup; end
+
+      ##
+      # Runs after every test, before teardown. This hook is meant for
+      # libraries to extend minitest. It is not meant to be used by
+      # test developers.
+      #
+      # See #before_setup for an example.
+
+      def before_teardown; end
+
+      ##
+      # Runs after every test. Use this to clean up after each test
+      # run.
+
+      def teardown; end
+
+      ##
+      # Runs after every test, after teardown. This hook is meant for
+      # libraries to extend minitest. It is not meant to be used by
+      # test developers.
+      #
+      # See #before_setup for an example.
+
+      def after_teardown; end
+    end # LifecycleHooks
+
+    def capture_exceptions # :nodoc:
+      yield.await
+    rescue *PASSTHROUGH_EXCEPTIONS
+      raise
+    rescue Assertion => e
+      self.failures << e
+    rescue Exception => e
+      self.failures << UnexpectedError.new(e)
+    end
+
+    ##
+    # Did this run error?
+
+    def error?
+      self.failures.any? { |f| UnexpectedError === f }
+    end
+
+    ##
+    # The location identifier of this test.
+
+    def location
+      loc = " [#{self.failure.location}]" unless passed? or error?
+      "#{self.class}##{self.name}#{loc}"
+    end
+
+    ##
+    # Did this run pass?
+    #
+    # Note: skipped runs are not considered passing, but they don't
+    # cause the process to exit non-zero.
+
+    def passed?
+      not self.failure
+    end
+
+    ##
+    # Returns ".", "F", or "E" based on the result of the run.
+
+    def result_code
+      self.failure and self.failure.result_code or "."
+    end
+
+    ##
+    # Was this run skipped?
+
+    def skipped?
+      self.failure and Skip === self.failure
+    end
+
+    def time_it # :nodoc:
+      t0 = Time.now
+
+      yield.await
+    ensure
+      self.time = Time.now - t0
+    end
+
+    def to_s # :nodoc:
+      return location if passed? and not skipped?
+
+      failures.map { |failure|
+        "#{failure.result_label}:\n#{self.location}:\n#{failure.message}\n"
+      }.join "\n"
+    end
+
+    def with_info_handler &block # :nodoc:
+      t0 = Time.now
+
+      handler = lambda do
+        warn "\nCurrent: %s#%s %.2fs" % [self.class, self.name, Time.now - t0]
+      end
+
+      self.class.on_signal("INFO", handler, &block).await
+    end
+
+    include LifecycleHooks
+    include Guard
+    extend Guard
+  end # Test
+end
+
+# require "minitest/unit" unless defined?(MiniTest) # compatibility layer only
diff --git a/vendored-minitest/test/unit.rb b/vendored-minitest/test/unit.rb
new file mode 100644
index 00000000..1654629b
--- /dev/null
+++ b/vendored-minitest/test/unit.rb
@@ -0,0 +1,28 @@
+# test/unit compatibility layer using minitest.
+
+require 'minitest/autorun'
+module Test
+  module Unit
+    class TestCase < Minitest::Test
+      alias assert_raise assert_raises
+
+      def assert_nothing_raised(*)
+        yield
+      end
+
+      def assert_raise_with_message(exception, err_message, msg = nil)
+        err = assert_raises(exception, msg) { yield }
+        if err_message.is_a?(Regexp)
+          assert_matches err_message, err.message
+        else
+          assert_equal err_message, err.message
+        end
+      end
+
+      def assert_not_equal exp, act, msg = nil
+        msg = message(msg, E) { diff exp, act }
+        assert exp != act, msg
+      end
+    end
+  end
+end
diff --git a/yarn.lock b/yarn.lock
new file mode 100644
index 00000000..43198cbf
--- /dev/null
+++ b/yarn.lock
@@ -0,0 +1,1946 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+"@babel/code-frame@7.12.11":
+  version "7.12.11"
+  resolved "https://registry.yarnpkg.com/@babel/code-frame/-/code-frame-7.12.11.tgz#f4ad435aa263db935b8f10f2c552d23fb716a63f"
+  integrity sha512-Zt1yodBx1UcyiePMSkWnU4hPqhwq7hGi2nFL1LeA3EUl+q2LQx16MISgJ0+z7dnmgvP9QtIleuETGOiOH1RcIw==
+  dependencies:
+    "@babel/highlight" "^7.10.4"
+
+"@babel/helper-validator-identifier@^7.14.5":
+  version "7.14.9"
+  resolved "https://registry.yarnpkg.com/@babel/helper-validator-identifier/-/helper-validator-identifier-7.14.9.tgz#6654d171b2024f6d8ee151bf2509699919131d48"
+  integrity sha512-pQYxPY0UP6IHISRitNe8bsijHex4TWZXi2HwKVsjPiltzlhse2znVcm9Ace510VT1kxIHjGJCZZQBX2gJDbo0g==
+
+"@babel/highlight@^7.10.4":
+  version "7.14.5"
+  resolved "https://registry.yarnpkg.com/@babel/highlight/-/highlight-7.14.5.tgz#6861a52f03966405001f6aa534a01a24d99e8cd9"
+  integrity sha512-qf9u2WFWVV0MppaL877j2dBtQIDgmidgjGk5VIMw3OadXvYaXn66U1BFlH2t4+t3i+8PhedppRv+i40ABzd+gg==
+  dependencies:
+    "@babel/helper-validator-identifier" "^7.14.5"
+    chalk "^2.0.0"
+    js-tokens "^4.0.0"
+
+"@eslint/eslintrc@^0.4.3":
+  version "0.4.3"
+  resolved "https://registry.yarnpkg.com/@eslint/eslintrc/-/eslintrc-0.4.3.tgz#9e42981ef035beb3dd49add17acb96e8ff6f394c"
+  integrity sha512-J6KFFz5QCYUJq3pf0mjEcCJVERbzv71PUIDczuh9JkwGEzced6CO5ADLHB1rbf/+oPBtoPfMYNOpGDzCANlbXw==
+  dependencies:
+    ajv "^6.12.4"
+    debug "^4.1.1"
+    espree "^7.3.0"
+    globals "^13.9.0"
+    ignore "^4.0.6"
+    import-fresh "^3.2.1"
+    js-yaml "^3.13.1"
+    minimatch "^3.0.4"
+    strip-json-comments "^3.1.1"
+
+"@humanwhocodes/config-array@^0.5.0":
+  version "0.5.0"
+  resolved "https://registry.yarnpkg.com/@humanwhocodes/config-array/-/config-array-0.5.0.tgz#1407967d4c6eecd7388f83acf1eaf4d0c6e58ef9"
+  integrity sha512-FagtKFz74XrTl7y6HCzQpwDfXP0yhxe9lHLD1UZxjvZIcbyRz8zTFF/yYNfSfzU414eDwZ1SrO0Qvtyf+wFMQg==
+  dependencies:
+    "@humanwhocodes/object-schema" "^1.2.0"
+    debug "^4.1.1"
+    minimatch "^3.0.4"
+
+"@humanwhocodes/object-schema@^1.2.0":
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/@humanwhocodes/object-schema/-/object-schema-1.2.0.tgz#87de7af9c231826fdd68ac7258f77c429e0e5fcf"
+  integrity sha512-wdppn25U8z/2yiaT6YGquE6X8sSv7hNMWSXYSSU1jGv/yd6XqjXgTDJ8KP4NgjTXfJ3GbRjeeb8RTV7a/VpM+w==
+
+JSONStream@^1.0.3:
+  version "1.3.5"
+  resolved "https://registry.yarnpkg.com/JSONStream/-/JSONStream-1.3.5.tgz#3208c1f08d3a4d99261ab64f92302bc15e111ca0"
+  integrity sha512-E+iruNOY8VV9s4JEbe1aNEm6MiszPRr/UfcHMz0TQh1BXSxHK+ASV1R6W4HpjBhSeS+54PIsAMCBmwD06LLsqQ==
+  dependencies:
+    jsonparse "^1.2.0"
+    through ">=2.2.7 <3"
+
+acorn-jsx@^5.3.1:
+  version "5.3.2"
+  resolved "https://registry.yarnpkg.com/acorn-jsx/-/acorn-jsx-5.3.2.tgz#7ed5bb55908b3b2f1bc55c6af1653bada7f07937"
+  integrity sha512-rq9s+JNhf0IChjtDXxllJ7g41oZk5SlXtp0LHwyA5cejwn7vKmKp4pPri6YEePv2PU65sAsegbXtIinmDFDXgQ==
+
+acorn-node@^1.2.0, acorn-node@^1.3.0, acorn-node@^1.5.2, acorn-node@^1.6.1:
+  version "1.8.2"
+  resolved "https://registry.yarnpkg.com/acorn-node/-/acorn-node-1.8.2.tgz#114c95d64539e53dede23de8b9d96df7c7ae2af8"
+  integrity sha512-8mt+fslDufLYntIoPAaIMUe/lrbrehIiwmR3t2k9LljIzoigEPF27eLk2hy8zSGzmR/ogr7zbRKINMo1u0yh5A==
+  dependencies:
+    acorn "^7.0.0"
+    acorn-walk "^7.0.0"
+    xtend "^4.0.2"
+
+acorn-walk@^7.0.0:
+  version "7.2.0"
+  resolved "https://registry.yarnpkg.com/acorn-walk/-/acorn-walk-7.2.0.tgz#0de889a601203909b0fbe07b8938dc21d2e967bc"
+  integrity sha512-OPdCF6GsMIP+Az+aWfAAOEt2/+iVDKE7oy6lJ098aoe59oAmK76qV6Gw60SbZ8jHuG2wH058GF4pLFbYamYrVA==
+
+acorn@^7.0.0, acorn@^7.4.0:
+  version "7.4.1"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-7.4.1.tgz#feaed255973d2e77555b83dbc08851a6c63520fa"
+  integrity sha512-nQyp0o1/mNdbTO1PO6kHkwSrmgZ0MT/jCCpNiwbUjGoRN4dlBhqJtoQuCnEOKzgTVwg0ZWiCoQy6SxMebQVh8A==
+
+ajv@^6.10.0, ajv@^6.12.4:
+  version "6.12.6"
+  resolved "https://registry.yarnpkg.com/ajv/-/ajv-6.12.6.tgz#baf5a62e802b07d977034586f8c3baf5adf26df4"
+  integrity sha512-j3fVLgvTo527anyYyJOGTYJbG+vnnQYvE0m5mmkc1TK+nxAppkCLMIL0aZ4dblVCNoGShhm+kzE4ZUykBoMg4g==
+  dependencies:
+    fast-deep-equal "^3.1.1"
+    fast-json-stable-stringify "^2.0.0"
+    json-schema-traverse "^0.4.1"
+    uri-js "^4.2.2"
+
+ajv@^8.0.1:
+  version "8.6.2"
+  resolved "https://registry.yarnpkg.com/ajv/-/ajv-8.6.2.tgz#2fb45e0e5fcbc0813326c1c3da535d1881bb0571"
+  integrity sha512-9807RlWAgT564wT+DjeyU5OFMPjmzxVobvDFmNAhY+5zD6A2ly3jDp6sgnfyDtlIQ+7H97oc/DGCzzfu9rjw9w==
+  dependencies:
+    fast-deep-equal "^3.1.1"
+    json-schema-traverse "^1.0.0"
+    require-from-string "^2.0.2"
+    uri-js "^4.2.2"
+
+ansi-colors@^4.1.1:
+  version "4.1.1"
+  resolved "https://registry.yarnpkg.com/ansi-colors/-/ansi-colors-4.1.1.tgz#cbb9ae256bf750af1eab344f229aa27fe94ba348"
+  integrity sha512-JoX0apGbHaUJBNl6yF+p6JAFYZ666/hhCGKN5t9QFjbJQKUU/g8MNbFDbvfrgKXvI1QpZplPOnwIo99lX/AAmA==
+
+ansi-regex@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-5.0.0.tgz#388539f55179bf39339c81af30a654d69f87cb75"
+  integrity sha512-bY6fj56OUQ0hU1KjFNDQuJFezqKdrAyFdIevADiqrWHwSlbmBNMHp5ak2f40Pm8JTFyM2mqxkG6ngkHO11f/lg==
+
+ansi-styles@^3.2.1:
+  version "3.2.1"
+  resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-3.2.1.tgz#41fbb20243e50b12be0f04b8dedbf07520ce841d"
+  integrity sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==
+  dependencies:
+    color-convert "^1.9.0"
+
+ansi-styles@^4.0.0, ansi-styles@^4.1.0:
+  version "4.3.0"
+  resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-4.3.0.tgz#edd803628ae71c04c85ae7a0906edad34b648937"
+  integrity sha512-zbB9rCJAT1rbjiVDb2hqKFHNYLxgtk8NURxZ3IZwD3F6NtxbXZQCnnSi1Lkx+IDohdPlFp222wVALIheZJQSEg==
+  dependencies:
+    color-convert "^2.0.1"
+
+argparse@^1.0.7:
+  version "1.0.10"
+  resolved "https://registry.yarnpkg.com/argparse/-/argparse-1.0.10.tgz#bcd6791ea5ae09725e17e5ad988134cd40b3d911"
+  integrity sha512-o5Roy6tNG4SL/FOkCAN6RzjiakZS25RLYFrcMttJqbdd8BWrnA+fGz57iN5Pb06pvBGvl5gQ0B48dJlslXvoTg==
+  dependencies:
+    sprintf-js "~1.0.2"
+
+array-filter@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/array-filter/-/array-filter-1.0.0.tgz#baf79e62e6ef4c2a4c0b831232daffec251f9d83"
+  integrity sha1-uveeYubvTCpMC4MSMtr/7CUfnYM=
+
+asn1.js@^5.2.0:
+  version "5.4.1"
+  resolved "https://registry.yarnpkg.com/asn1.js/-/asn1.js-5.4.1.tgz#11a980b84ebb91781ce35b0fdc2ee294e3783f07"
+  integrity sha512-+I//4cYPccV8LdmBLiX8CYvf9Sp3vQsrqu2QNXRcrbiWvcx/UdlFiqUJJzxRQxgsZmvhXhn4cSKeSmoFjVdupA==
+  dependencies:
+    bn.js "^4.0.0"
+    inherits "^2.0.1"
+    minimalistic-assert "^1.0.0"
+    safer-buffer "^2.1.0"
+
+assert@^1.4.0:
+  version "1.5.0"
+  resolved "https://registry.yarnpkg.com/assert/-/assert-1.5.0.tgz#55c109aaf6e0aefdb3dc4b71240c70bf574b18eb"
+  integrity sha512-EDsgawzwoun2CZkCgtxJbv392v4nbk9XDD06zI+kQYoBM/3RBWLlEyJARDOmhAAosBjWACEkKL6S+lIZtcAubA==
+  dependencies:
+    object-assign "^4.1.1"
+    util "0.10.3"
+
+astral-regex@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/astral-regex/-/astral-regex-2.0.0.tgz#483143c567aeed4785759c0865786dc77d7d2e31"
+  integrity sha512-Z7tMw1ytTXt5jqMcOP+OQteU1VuNK9Y02uuJtKQ1Sv69jXQKKg5cibLwGJow8yzZP+eAc18EmLGPal0bp36rvQ==
+
+available-typed-arrays@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/available-typed-arrays/-/available-typed-arrays-1.0.2.tgz#6b098ca9d8039079ee3f77f7b783c4480ba513f5"
+  integrity sha512-XWX3OX8Onv97LMk/ftVyBibpGwY5a8SmuxZPzeOxqmuEqUCOM9ZE+uIaD1VNJ5QnvU2UQusvmKbuM1FR8QWGfQ==
+  dependencies:
+    array-filter "^1.0.0"
+
+balanced-match@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/balanced-match/-/balanced-match-1.0.0.tgz#89b4d199ab2bee49de164ea02b89ce462d71b767"
+  integrity sha1-ibTRmasr7kneFk6gK4nORi1xt2c=
+
+base64-js@^1.0.2:
+  version "1.5.1"
+  resolved "https://registry.yarnpkg.com/base64-js/-/base64-js-1.5.1.tgz#1b1b440160a5bf7ad40b650f095963481903930a"
+  integrity sha512-AKpaYlHn8t4SVbOHCy+b5+KKgvR4vrsD8vbvrbiQJps7fKDTkjkDry6ji0rUJjC0kzbNePLwzxq8iypo41qeWA==
+
+benchmark@^2.1.4:
+  version "2.1.4"
+  resolved "https://registry.yarnpkg.com/benchmark/-/benchmark-2.1.4.tgz#09f3de31c916425d498cc2ee565a0ebf3c2a5629"
+  integrity sha1-CfPeMckWQl1JjMLuVloOvzwqVik=
+  dependencies:
+    lodash "^4.17.4"
+    platform "^1.3.3"
+
+bn.js@^4.0.0, bn.js@^4.1.0, bn.js@^4.4.0:
+  version "4.11.9"
+  resolved "https://registry.yarnpkg.com/bn.js/-/bn.js-4.11.9.tgz#26d556829458f9d1e81fc48952493d0ba3507828"
+  integrity sha512-E6QoYqCKZfgatHTdHzs1RRKP7ip4vvm+EyRUeE2RF0NblwVvb0p6jSVeNTOFxPn26QXN2o6SMfNxKp6kU8zQaw==
+
+bn.js@^5.0.0, bn.js@^5.1.1:
+  version "5.1.3"
+  resolved "https://registry.yarnpkg.com/bn.js/-/bn.js-5.1.3.tgz#beca005408f642ebebea80b042b4d18d2ac0ee6b"
+  integrity sha512-GkTiFpjFtUzU9CbMeJ5iazkCzGL3jrhzerzZIuqLABjbwRaFt33I9tUdSNryIptM+RxDet6OKm2WnLXzW51KsQ==
+
+brace-expansion@^1.1.7:
+  version "1.1.11"
+  resolved "https://registry.yarnpkg.com/brace-expansion/-/brace-expansion-1.1.11.tgz#3c7fcbf529d87226f3d2f52b966ff5271eb441dd"
+  integrity sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==
+  dependencies:
+    balanced-match "^1.0.0"
+    concat-map "0.0.1"
+
+brorand@^1.0.1:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/brorand/-/brorand-1.1.0.tgz#12c25efe40a45e3c323eb8675a0a0ce57b22371f"
+  integrity sha1-EsJe/kCkXjwyPrhnWgoM5XsiNx8=
+
+browser-pack@^6.0.1:
+  version "6.1.0"
+  resolved "https://registry.yarnpkg.com/browser-pack/-/browser-pack-6.1.0.tgz#c34ba10d0b9ce162b5af227c7131c92c2ecd5774"
+  integrity sha512-erYug8XoqzU3IfcU8fUgyHqyOXqIE4tUTTQ+7mqUjQlvnXkOO6OlT9c/ZoJVHYoAaqGxr09CN53G7XIsO4KtWA==
+  dependencies:
+    JSONStream "^1.0.3"
+    combine-source-map "~0.8.0"
+    defined "^1.0.0"
+    safe-buffer "^5.1.1"
+    through2 "^2.0.0"
+    umd "^3.0.0"
+
+browser-resolve@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/browser-resolve/-/browser-resolve-2.0.0.tgz#99b7304cb392f8d73dba741bb2d7da28c6d7842b"
+  integrity sha512-7sWsQlYL2rGLy2IWm8WL8DCTJvYLc/qlOnsakDac87SOoCd16WLsaAMdCiAqsTNHIe+SXfaqyxyo6THoWqs8WQ==
+  dependencies:
+    resolve "^1.17.0"
+
+browserify-aes@^1.0.0, browserify-aes@^1.0.4:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/browserify-aes/-/browserify-aes-1.2.0.tgz#326734642f403dabc3003209853bb70ad428ef48"
+  integrity sha512-+7CHXqGuspUn/Sl5aO7Ea0xWGAtETPXNSAjHo48JfLdPWcMng33Xe4znFvQweqc/uzk5zSOI3H52CYnjCfb5hA==
+  dependencies:
+    buffer-xor "^1.0.3"
+    cipher-base "^1.0.0"
+    create-hash "^1.1.0"
+    evp_bytestokey "^1.0.3"
+    inherits "^2.0.1"
+    safe-buffer "^5.0.1"
+
+browserify-cipher@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/browserify-cipher/-/browserify-cipher-1.0.1.tgz#8d6474c1b870bfdabcd3bcfcc1934a10e94f15f0"
+  integrity sha512-sPhkz0ARKbf4rRQt2hTpAHqn47X3llLkUGn+xEJzLjwY8LRs2p0v7ljvI5EyoRO/mexrNunNECisZs+gw2zz1w==
+  dependencies:
+    browserify-aes "^1.0.4"
+    browserify-des "^1.0.0"
+    evp_bytestokey "^1.0.0"
+
+browserify-des@^1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/browserify-des/-/browserify-des-1.0.2.tgz#3af4f1f59839403572f1c66204375f7a7f703e9c"
+  integrity sha512-BioO1xf3hFwz4kc6iBhI3ieDFompMhrMlnDFC4/0/vd5MokpuAc3R+LYbwTA9A5Yc9pq9UYPqffKpW2ObuwX5A==
+  dependencies:
+    cipher-base "^1.0.1"
+    des.js "^1.0.0"
+    inherits "^2.0.1"
+    safe-buffer "^5.1.2"
+
+browserify-rsa@^4.0.0, browserify-rsa@^4.0.1:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/browserify-rsa/-/browserify-rsa-4.1.0.tgz#b2fd06b5b75ae297f7ce2dc651f918f5be158c8d"
+  integrity sha512-AdEER0Hkspgno2aR97SAf6vi0y0k8NuOpGnVH3O99rcA5Q6sh8QxcngtHuJ6uXwnfAXNM4Gn1Gb7/MV1+Ymbog==
+  dependencies:
+    bn.js "^5.0.0"
+    randombytes "^2.0.1"
+
+browserify-sign@^4.0.0:
+  version "4.2.1"
+  resolved "https://registry.yarnpkg.com/browserify-sign/-/browserify-sign-4.2.1.tgz#eaf4add46dd54be3bb3b36c0cf15abbeba7956c3"
+  integrity sha512-/vrA5fguVAKKAVTNJjgSm1tRQDHUU6DbwO9IROu/0WAzC8PKhucDSh18J0RMvVeHAn5puMd+QHC2erPRNf8lmg==
+  dependencies:
+    bn.js "^5.1.1"
+    browserify-rsa "^4.0.1"
+    create-hash "^1.2.0"
+    create-hmac "^1.1.7"
+    elliptic "^6.5.3"
+    inherits "^2.0.4"
+    parse-asn1 "^5.1.5"
+    readable-stream "^3.6.0"
+    safe-buffer "^5.2.0"
+
+browserify-zlib@~0.2.0:
+  version "0.2.0"
+  resolved "https://registry.yarnpkg.com/browserify-zlib/-/browserify-zlib-0.2.0.tgz#2869459d9aa3be245fe8fe2ca1f46e2e7f54d73f"
+  integrity sha512-Z942RysHXmJrhqk88FmKBVq/v5tqmSkDz7p54G/MGyjMnCFFnC79XWNbg+Vta8W6Wb2qtSZTSxIGkJrRpCFEiA==
+  dependencies:
+    pako "~1.0.5"
+
+browserify@^17.0.0:
+  version "17.0.0"
+  resolved "https://registry.yarnpkg.com/browserify/-/browserify-17.0.0.tgz#4c48fed6c02bfa2b51fd3b670fddb805723cdc22"
+  integrity sha512-SaHqzhku9v/j6XsQMRxPyBrSP3gnwmE27gLJYZgMT2GeK3J0+0toN+MnuNYDfHwVGQfLiMZ7KSNSIXHemy905w==
+  dependencies:
+    JSONStream "^1.0.3"
+    assert "^1.4.0"
+    browser-pack "^6.0.1"
+    browser-resolve "^2.0.0"
+    browserify-zlib "~0.2.0"
+    buffer "~5.2.1"
+    cached-path-relative "^1.0.0"
+    concat-stream "^1.6.0"
+    console-browserify "^1.1.0"
+    constants-browserify "~1.0.0"
+    crypto-browserify "^3.0.0"
+    defined "^1.0.0"
+    deps-sort "^2.0.1"
+    domain-browser "^1.2.0"
+    duplexer2 "~0.1.2"
+    events "^3.0.0"
+    glob "^7.1.0"
+    has "^1.0.0"
+    htmlescape "^1.1.0"
+    https-browserify "^1.0.0"
+    inherits "~2.0.1"
+    insert-module-globals "^7.2.1"
+    labeled-stream-splicer "^2.0.0"
+    mkdirp-classic "^0.5.2"
+    module-deps "^6.2.3"
+    os-browserify "~0.3.0"
+    parents "^1.0.1"
+    path-browserify "^1.0.0"
+    process "~0.11.0"
+    punycode "^1.3.2"
+    querystring-es3 "~0.2.0"
+    read-only-stream "^2.0.0"
+    readable-stream "^2.0.2"
+    resolve "^1.1.4"
+    shasum-object "^1.0.0"
+    shell-quote "^1.6.1"
+    stream-browserify "^3.0.0"
+    stream-http "^3.0.0"
+    string_decoder "^1.1.1"
+    subarg "^1.0.0"
+    syntax-error "^1.1.1"
+    through2 "^2.0.0"
+    timers-browserify "^1.0.1"
+    tty-browserify "0.0.1"
+    url "~0.11.0"
+    util "~0.12.0"
+    vm-browserify "^1.0.0"
+    xtend "^4.0.0"
+
+buffer-from@^1.0.0:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/buffer-from/-/buffer-from-1.1.1.tgz#32713bc028f75c02fdb710d7c7bcec1f2c6070ef"
+  integrity sha512-MQcXEUbCKtEo7bhqEs6560Hyd4XaovZlO/k9V3hjVUF/zwW7KBVdSK4gIt/bzwS9MbR5qob+F5jusZsb0YQK2A==
+
+buffer-xor@^1.0.3:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/buffer-xor/-/buffer-xor-1.0.3.tgz#26e61ed1422fb70dd42e6e36729ed51d855fe8d9"
+  integrity sha1-JuYe0UIvtw3ULm42cp7VHYVf6Nk=
+
+buffer@~5.2.1:
+  version "5.2.1"
+  resolved "https://registry.yarnpkg.com/buffer/-/buffer-5.2.1.tgz#dd57fa0f109ac59c602479044dca7b8b3d0b71d6"
+  integrity sha512-c+Ko0loDaFfuPWiL02ls9Xd3GO3cPVmUobQ6t3rXNUk304u6hGq+8N/kFi+QEIKhzK3uwolVhLzszmfLmMLnqg==
+  dependencies:
+    base64-js "^1.0.2"
+    ieee754 "^1.1.4"
+
+builtin-status-codes@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/builtin-status-codes/-/builtin-status-codes-3.0.0.tgz#85982878e21b98e1c66425e03d0174788f569ee8"
+  integrity sha1-hZgoeOIbmOHGZCXgPQF0eI9Wnug=
+
+cached-path-relative@^1.0.0, cached-path-relative@^1.0.2:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/cached-path-relative/-/cached-path-relative-1.1.0.tgz#865576dfef39c0d6a7defde794d078f5308e3ef3"
+  integrity sha512-WF0LihfemtesFcJgO7xfOoOcnWzY/QHR4qeDqV44jPU3HTI54+LnfXK3SA27AVVGCdZFgjjFFaqUA9Jx7dMJZA==
+
+call-bind@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/call-bind/-/call-bind-1.0.0.tgz#24127054bb3f9bdcb4b1fb82418186072f77b8ce"
+  integrity sha512-AEXsYIyyDY3MCzbwdhzG3Jx1R0J2wetQyUynn6dYHAO+bg8l1k7jwZtRv4ryryFs7EP+NDlikJlVe59jr0cM2w==
+  dependencies:
+    function-bind "^1.1.1"
+    get-intrinsic "^1.0.0"
+
+callsites@^3.0.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/callsites/-/callsites-3.1.0.tgz#b3630abd8943432f54b3f0519238e33cd7df2f73"
+  integrity sha512-P8BjAsXvZS+VIDUI11hHCQEv74YT67YUi5JJFNWIqL235sBmjX4+qx9Muvls5ivyNENctx46xQLQ3aTuE7ssaQ==
+
+chalk@^2.0.0:
+  version "2.4.2"
+  resolved "https://registry.yarnpkg.com/chalk/-/chalk-2.4.2.tgz#cd42541677a54333cf541a49108c1432b44c9424"
+  integrity sha512-Mti+f9lpJNcwF4tWV8/OrTTtF1gZi+f8FqlyAdouralcFWFQWF2+NgCHShjkCb+IFBLq9buZwE1xckQU4peSuQ==
+  dependencies:
+    ansi-styles "^3.2.1"
+    escape-string-regexp "^1.0.5"
+    supports-color "^5.3.0"
+
+chalk@^4.0.0:
+  version "4.1.2"
+  resolved "https://registry.yarnpkg.com/chalk/-/chalk-4.1.2.tgz#aac4e2b7734a740867aeb16bf02aad556a1e7a01"
+  integrity sha512-oKnbhFyRIXpUuez8iBMmyEa4nbj4IOQyuhc/wy9kY7/WVPcwIO9VA668Pu8RkO7+0G76SLROeyw9CpQ061i4mA==
+  dependencies:
+    ansi-styles "^4.1.0"
+    supports-color "^7.1.0"
+
+cipher-base@^1.0.0, cipher-base@^1.0.1, cipher-base@^1.0.3:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/cipher-base/-/cipher-base-1.0.4.tgz#8760e4ecc272f4c363532f926d874aae2c1397de"
+  integrity sha512-Kkht5ye6ZGmwv40uUDZztayT2ThLQGfnj/T71N/XzeZeo3nf8foyW7zGTsPYkEya3m5f3cAypH+qe7YOrM1U2Q==
+  dependencies:
+    inherits "^2.0.1"
+    safe-buffer "^5.0.1"
+
+color-convert@^1.9.0:
+  version "1.9.3"
+  resolved "https://registry.yarnpkg.com/color-convert/-/color-convert-1.9.3.tgz#bb71850690e1f136567de629d2d5471deda4c1e8"
+  integrity sha512-QfAUtd+vFdAtFQcC8CCyYt1fYWxSqAiK2cSD6zDB8N3cpsEBAvRxp9zOGg6G/SHHJYAT88/az/IuDGALsNVbGg==
+  dependencies:
+    color-name "1.1.3"
+
+color-convert@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/color-convert/-/color-convert-2.0.1.tgz#72d3a68d598c9bdb3af2ad1e84f21d896abd4de3"
+  integrity sha512-RRECPsj7iu/xb5oKYcsFHSppFNnsj/52OVTRKb4zP5onXwVF3zVmmToNcOfGC+CRDpfK/U584fMg38ZHCaElKQ==
+  dependencies:
+    color-name "~1.1.4"
+
+color-name@1.1.3:
+  version "1.1.3"
+  resolved "https://registry.yarnpkg.com/color-name/-/color-name-1.1.3.tgz#a7d0558bd89c42f795dd42328f740831ca53bc25"
+  integrity sha1-p9BVi9icQveV3UIyj3QIMcpTvCU=
+
+color-name@~1.1.4:
+  version "1.1.4"
+  resolved "https://registry.yarnpkg.com/color-name/-/color-name-1.1.4.tgz#c2a09a87acbde69543de6f63fa3995c826c536a2"
+  integrity sha512-dOy+3AuW3a2wNbZHIuMZpTcgjGuLU/uBL/ubcZF9OXbDo8ff4O8yVp5Bf0efS8uEoYo5q4Fx7dY9OgQGXgAsQA==
+
+combine-source-map@^0.8.0, combine-source-map@~0.8.0:
+  version "0.8.0"
+  resolved "https://registry.yarnpkg.com/combine-source-map/-/combine-source-map-0.8.0.tgz#a58d0df042c186fcf822a8e8015f5450d2d79a8b"
+  integrity sha1-pY0N8ELBhvz4IqjoAV9UUNLXmos=
+  dependencies:
+    convert-source-map "~1.1.0"
+    inline-source-map "~0.6.0"
+    lodash.memoize "~3.0.3"
+    source-map "~0.5.3"
+
+commander@^2.20.0:
+  version "2.20.3"
+  resolved "https://registry.yarnpkg.com/commander/-/commander-2.20.3.tgz#fd485e84c03eb4881c20722ba48035e8531aeb33"
+  integrity sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ==
+
+concat-map@0.0.1:
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/concat-map/-/concat-map-0.0.1.tgz#d8a96bd77fd68df7793a73036a3ba0d5405d477b"
+  integrity sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=
+
+concat-stream@^1.6.0, concat-stream@^1.6.1, concat-stream@~1.6.0:
+  version "1.6.2"
+  resolved "https://registry.yarnpkg.com/concat-stream/-/concat-stream-1.6.2.tgz#904bdf194cd3122fc675c77fc4ac3d4ff0fd1a34"
+  integrity sha512-27HBghJxjiZtIk3Ycvn/4kbJk/1uZuJFfuPEns6LaEvpvG1f0hTea8lilrouyo9mVc2GWdcEZ8OLoGmSADlrCw==
+  dependencies:
+    buffer-from "^1.0.0"
+    inherits "^2.0.3"
+    readable-stream "^2.2.2"
+    typedarray "^0.0.6"
+
+console-browserify@^1.1.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/console-browserify/-/console-browserify-1.2.0.tgz#67063cef57ceb6cf4993a2ab3a55840ae8c49336"
+  integrity sha512-ZMkYO/LkF17QvCPqM0gxw8yUzigAOZOSWSHg91FH6orS7vcEj5dVZTidN2fQ14yBSdg97RqhSNwLUXInd52OTA==
+
+constants-browserify@~1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/constants-browserify/-/constants-browserify-1.0.0.tgz#c20b96d8c617748aaf1c16021760cd27fcb8cb75"
+  integrity sha1-wguW2MYXdIqvHBYCF2DNJ/y4y3U=
+
+convert-source-map@~1.1.0:
+  version "1.1.3"
+  resolved "https://registry.yarnpkg.com/convert-source-map/-/convert-source-map-1.1.3.tgz#4829c877e9fe49b3161f3bf3673888e204699860"
+  integrity sha1-SCnId+n+SbMWHzvzZziI4gRpmGA=
+
+core-util-is@~1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"
+  integrity sha1-tf1UIgqivFq1eqtxQMlAdUUDwac=
+
+create-ecdh@^4.0.0:
+  version "4.0.4"
+  resolved "https://registry.yarnpkg.com/create-ecdh/-/create-ecdh-4.0.4.tgz#d6e7f4bffa66736085a0762fd3a632684dabcc4e"
+  integrity sha512-mf+TCx8wWc9VpuxfP2ht0iSISLZnt0JgWlrOKZiNqyUZWnjIaCIVNQArMHnCZKfEYRg6IM7A+NeJoN8gf/Ws0A==
+  dependencies:
+    bn.js "^4.1.0"
+    elliptic "^6.5.3"
+
+create-hash@^1.1.0, create-hash@^1.1.2, create-hash@^1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/create-hash/-/create-hash-1.2.0.tgz#889078af11a63756bcfb59bd221996be3a9ef196"
+  integrity sha512-z00bCGNHDG8mHAkP7CtT1qVu+bFQUPjYq/4Iv3C3kWjTFV10zIjfSoeqXo9Asws8gwSHDGj/hl2u4OGIjapeCg==
+  dependencies:
+    cipher-base "^1.0.1"
+    inherits "^2.0.1"
+    md5.js "^1.3.4"
+    ripemd160 "^2.0.1"
+    sha.js "^2.4.0"
+
+create-hmac@^1.1.0, create-hmac@^1.1.4, create-hmac@^1.1.7:
+  version "1.1.7"
+  resolved "https://registry.yarnpkg.com/create-hmac/-/create-hmac-1.1.7.tgz#69170c78b3ab957147b2b8b04572e47ead2243ff"
+  integrity sha512-MJG9liiZ+ogc4TzUwuvbER1JRdgvUFSB5+VR/g5h82fGaIRWMWddtKBHi7/sVhfjQZ6SehlyhvQYrcYkaUIpLg==
+  dependencies:
+    cipher-base "^1.0.3"
+    create-hash "^1.1.0"
+    inherits "^2.0.1"
+    ripemd160 "^2.0.0"
+    safe-buffer "^5.0.1"
+    sha.js "^2.4.8"
+
+cross-spawn@^7.0.2:
+  version "7.0.3"
+  resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-7.0.3.tgz#f73a85b9d5d41d045551c177e2882d4ac85728a6"
+  integrity sha512-iRDPJKUPVEND7dHPO8rkbOnPpyDygcDFtWjpeWNCgy8WP2rXcxXL8TskReQl6OrB2G7+UJrags1q15Fudc7G6w==
+  dependencies:
+    path-key "^3.1.0"
+    shebang-command "^2.0.0"
+    which "^2.0.1"
+
+crypto-browserify@^3.0.0:
+  version "3.12.0"
+  resolved "https://registry.yarnpkg.com/crypto-browserify/-/crypto-browserify-3.12.0.tgz#396cf9f3137f03e4b8e532c58f698254e00f80ec"
+  integrity sha512-fz4spIh+znjO2VjL+IdhEpRJ3YN6sMzITSBijk6FK2UvTqruSQW+/cCZTSNsMiZNvUeq0CqurF+dAbyiGOY6Wg==
+  dependencies:
+    browserify-cipher "^1.0.0"
+    browserify-sign "^4.0.0"
+    create-ecdh "^4.0.0"
+    create-hash "^1.1.0"
+    create-hmac "^1.1.0"
+    diffie-hellman "^5.0.0"
+    inherits "^2.0.1"
+    pbkdf2 "^3.0.3"
+    public-encrypt "^4.0.0"
+    randombytes "^2.0.0"
+    randomfill "^1.0.3"
+
+dash-ast@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/dash-ast/-/dash-ast-1.0.0.tgz#12029ba5fb2f8aa6f0a861795b23c1b4b6c27d37"
+  integrity sha512-Vy4dx7gquTeMcQR/hDkYLGUnwVil6vk4FOOct+djUnHOUWt+zJPJAaRIXaAFkPXtJjvlY7o3rfRu0/3hpnwoUA==
+
+debug@^4.0.1, debug@^4.1.1:
+  version "4.3.2"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-4.3.2.tgz#f0a49c18ac8779e31d4a0c6029dfb76873c7428b"
+  integrity sha512-mOp8wKcvj7XxC78zLgw/ZA+6TSgkoE2C/ienthhRD298T7UNwAg9diBpLRxC0mOezLl4B0xV7M0cCO6P/O0Xhw==
+  dependencies:
+    ms "2.1.2"
+
+deep-is@^0.1.3:
+  version "0.1.3"
+  resolved "https://registry.yarnpkg.com/deep-is/-/deep-is-0.1.3.tgz#b369d6fb5dbc13eecf524f91b070feedc357cf34"
+  integrity sha1-s2nW+128E+7PUk+RsHD+7cNXzzQ=
+
+define-properties@^1.1.3:
+  version "1.1.3"
+  resolved "https://registry.yarnpkg.com/define-properties/-/define-properties-1.1.3.tgz#cf88da6cbee26fe6db7094f61d870cbd84cee9f1"
+  integrity sha512-3MqfYKj2lLzdMSf8ZIZE/V+Zuy+BgD6f164e8K2w7dgnpKArBDerGYpM46IYYcjnkdPNMjPk9A6VFB8+3SKlXQ==
+  dependencies:
+    object-keys "^1.0.12"
+
+defined@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/defined/-/defined-1.0.0.tgz#c98d9bcef75674188e110969151199e39b1fa693"
+  integrity sha1-yY2bzvdWdBiOEQlpFRGZ45sfppM=
+
+deps-sort@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/deps-sort/-/deps-sort-2.0.1.tgz#9dfdc876d2bcec3386b6829ac52162cda9fa208d"
+  integrity sha512-1orqXQr5po+3KI6kQb9A4jnXT1PBwggGl2d7Sq2xsnOeI9GPcE/tGcF9UiSZtZBM7MukY4cAh7MemS6tZYipfw==
+  dependencies:
+    JSONStream "^1.0.3"
+    shasum-object "^1.0.0"
+    subarg "^1.0.0"
+    through2 "^2.0.0"
+
+des.js@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/des.js/-/des.js-1.0.1.tgz#5382142e1bdc53f85d86d53e5f4aa7deb91e0843"
+  integrity sha512-Q0I4pfFrv2VPd34/vfLrFOoRmlYj3OV50i7fskps1jZWK1kApMWWT9G6RRUeYedLcBDIhnSDaUvJMb3AhUlaEA==
+  dependencies:
+    inherits "^2.0.1"
+    minimalistic-assert "^1.0.0"
+
+detective@^5.2.0:
+  version "5.2.0"
+  resolved "https://registry.yarnpkg.com/detective/-/detective-5.2.0.tgz#feb2a77e85b904ecdea459ad897cc90a99bd2a7b"
+  integrity sha512-6SsIx+nUUbuK0EthKjv0zrdnajCCXVYGmbYYiYjFVpzcjwEs/JMDZ8tPRG29J/HhN56t3GJp2cGSWDRjjot8Pg==
+  dependencies:
+    acorn-node "^1.6.1"
+    defined "^1.0.0"
+    minimist "^1.1.1"
+
+diffie-hellman@^5.0.0:
+  version "5.0.3"
+  resolved "https://registry.yarnpkg.com/diffie-hellman/-/diffie-hellman-5.0.3.tgz#40e8ee98f55a2149607146921c63e1ae5f3d2875"
+  integrity sha512-kqag/Nl+f3GwyK25fhUMYj81BUOrZ9IuJsjIcDE5icNM9FJHAVm3VcUDxdLPoQtTuUylWm6ZIknYJwwaPxsUzg==
+  dependencies:
+    bn.js "^4.1.0"
+    miller-rabin "^4.0.0"
+    randombytes "^2.0.0"
+
+doctrine@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/doctrine/-/doctrine-3.0.0.tgz#addebead72a6574db783639dc87a121773973961"
+  integrity sha512-yS+Q5i3hBf7GBkd4KG8a7eBNNWNGLTaEwwYWUijIYM7zrlYDM0BFXHjjPWlWZ1Rg7UaddZeIDmi9jF3HmqiQ2w==
+  dependencies:
+    esutils "^2.0.2"
+
+domain-browser@^1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/domain-browser/-/domain-browser-1.2.0.tgz#3d31f50191a6749dd1375a7f522e823d42e54eda"
+  integrity sha512-jnjyiM6eRyZl2H+W8Q/zLMA481hzi0eszAaBUzIVnmYVDBbnLxVNnfu1HgEBvCbL+71FrxMl3E6lpKH7Ge3OXA==
+
+duplexer2@^0.1.2, duplexer2@~0.1.0, duplexer2@~0.1.2:
+  version "0.1.4"
+  resolved "https://registry.yarnpkg.com/duplexer2/-/duplexer2-0.1.4.tgz#8b12dab878c0d69e3e7891051662a32fc6bddcc1"
+  integrity sha1-ixLauHjA1p4+eJEFFmKjL8a93ME=
+  dependencies:
+    readable-stream "^2.0.2"
+
+elliptic@^6.5.3:
+  version "6.5.3"
+  resolved "https://registry.yarnpkg.com/elliptic/-/elliptic-6.5.3.tgz#cb59eb2efdaf73a0bd78ccd7015a62ad6e0f93d6"
+  integrity sha512-IMqzv5wNQf+E6aHeIqATs0tOLeOTwj1QKbRcS3jBbYkl5oLAserA8yJTT7/VyHUYG91PRmPyeQDObKLPpeS4dw==
+  dependencies:
+    bn.js "^4.4.0"
+    brorand "^1.0.1"
+    hash.js "^1.0.0"
+    hmac-drbg "^1.0.0"
+    inherits "^2.0.1"
+    minimalistic-assert "^1.0.0"
+    minimalistic-crypto-utils "^1.0.0"
+
+emoji-regex@^8.0.0:
+  version "8.0.0"
+  resolved "https://registry.yarnpkg.com/emoji-regex/-/emoji-regex-8.0.0.tgz#e818fd69ce5ccfcb404594f842963bf53164cc37"
+  integrity sha512-MSjYzcWNOA0ewAHpz0MxpYFvwg6yjy1NG3xteoqz644VCo/RPgnr1/GGt+ic3iJTzQ8Eu3TdM14SawnVUmGE6A==
+
+enquirer@^2.3.5:
+  version "2.3.6"
+  resolved "https://registry.yarnpkg.com/enquirer/-/enquirer-2.3.6.tgz#2a7fe5dd634a1e4125a975ec994ff5456dc3734d"
+  integrity sha512-yjNnPr315/FjS4zIsUxYguYUPP2e1NK4d7E7ZOLiyYCcbFBiTMyID+2wvm2w6+pZ/odMA7cRkjhsPbltwBOrLg==
+  dependencies:
+    ansi-colors "^4.1.1"
+
+es-abstract@^1.18.0-next.1:
+  version "1.18.0-next.1"
+  resolved "https://registry.yarnpkg.com/es-abstract/-/es-abstract-1.18.0-next.1.tgz#6e3a0a4bda717e5023ab3b8e90bec36108d22c68"
+  integrity sha512-I4UGspA0wpZXWENrdA0uHbnhte683t3qT/1VFH9aX2dA5PPSf6QW5HHXf5HImaqPmjXaVeVk4RGWnaylmV7uAA==
+  dependencies:
+    es-to-primitive "^1.2.1"
+    function-bind "^1.1.1"
+    has "^1.0.3"
+    has-symbols "^1.0.1"
+    is-callable "^1.2.2"
+    is-negative-zero "^2.0.0"
+    is-regex "^1.1.1"
+    object-inspect "^1.8.0"
+    object-keys "^1.1.1"
+    object.assign "^4.1.1"
+    string.prototype.trimend "^1.0.1"
+    string.prototype.trimstart "^1.0.1"
+
+es-to-primitive@^1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/es-to-primitive/-/es-to-primitive-1.2.1.tgz#e55cd4c9cdc188bcefb03b366c736323fc5c898a"
+  integrity sha512-QCOllgZJtaUo9miYBcLChTUaHNjJF3PYs1VidD7AwiEj1kYxKeQTctLAezAOH5ZKRH0g2IgPn6KwB4IT8iRpvA==
+  dependencies:
+    is-callable "^1.1.4"
+    is-date-object "^1.0.1"
+    is-symbol "^1.0.2"
+
+escape-string-regexp@^1.0.5:
+  version "1.0.5"
+  resolved "https://registry.yarnpkg.com/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz#1b61c0562190a8dff6ae3bb2cf0200ca130b86d4"
+  integrity sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ=
+
+escape-string-regexp@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/escape-string-regexp/-/escape-string-regexp-4.0.0.tgz#14ba83a5d373e3d311e5afca29cf5bfad965bf34"
+  integrity sha512-TtpcNJ3XAzx3Gq8sWRzJaVajRs0uVxA2YAkdb1jm2YkPz4G6egUFAyA3n5vtEIZefPk5Wa4UXbKuS5fKkJWdgA==
+
+eslint-scope@^5.1.1:
+  version "5.1.1"
+  resolved "https://registry.yarnpkg.com/eslint-scope/-/eslint-scope-5.1.1.tgz#e786e59a66cb92b3f6c1fb0d508aab174848f48c"
+  integrity sha512-2NxwbF/hZ0KpepYN0cNbo+FN6XoK7GaHlQhgx/hIZl6Va0bF45RQOOwhLIy8lQDbuCiadSLCBnH2CFYquit5bw==
+  dependencies:
+    esrecurse "^4.3.0"
+    estraverse "^4.1.1"
+
+eslint-utils@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/eslint-utils/-/eslint-utils-2.1.0.tgz#d2de5e03424e707dc10c74068ddedae708741b27"
+  integrity sha512-w94dQYoauyvlDc43XnGB8lU3Zt713vNChgt4EWwhXAP2XkBvndfxF0AgIqKOOasjPIPzj9JqgwkwbCYD0/V3Zg==
+  dependencies:
+    eslint-visitor-keys "^1.1.0"
+
+eslint-visitor-keys@^1.1.0, eslint-visitor-keys@^1.3.0:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/eslint-visitor-keys/-/eslint-visitor-keys-1.3.0.tgz#30ebd1ef7c2fdff01c3a4f151044af25fab0523e"
+  integrity sha512-6J72N8UNa462wa/KFODt/PJ3IU60SDpC3QXC1Hjc1BXXpfL2C9R5+AU7jhe0F6GREqVMh4Juu+NY7xn+6dipUQ==
+
+eslint-visitor-keys@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/eslint-visitor-keys/-/eslint-visitor-keys-2.1.0.tgz#f65328259305927392c938ed44eb0a5c9b2bd303"
+  integrity sha512-0rSmRBzXgDzIsD6mGdJgevzgezI534Cer5L/vyMX0kHzT/jiB43jRhd9YUlMGYLQy2zprNmoT8qasCGtY+QaKw==
+
+eslint@^7.32.0:
+  version "7.32.0"
+  resolved "https://registry.yarnpkg.com/eslint/-/eslint-7.32.0.tgz#c6d328a14be3fb08c8d1d21e12c02fdb7a2a812d"
+  integrity sha512-VHZ8gX+EDfz+97jGcgyGCyRia/dPOd6Xh9yPv8Bl1+SoaIwD+a/vlrOmGRUyOYu7MwUhc7CxqeaDZU13S4+EpA==
+  dependencies:
+    "@babel/code-frame" "7.12.11"
+    "@eslint/eslintrc" "^0.4.3"
+    "@humanwhocodes/config-array" "^0.5.0"
+    ajv "^6.10.0"
+    chalk "^4.0.0"
+    cross-spawn "^7.0.2"
+    debug "^4.0.1"
+    doctrine "^3.0.0"
+    enquirer "^2.3.5"
+    escape-string-regexp "^4.0.0"
+    eslint-scope "^5.1.1"
+    eslint-utils "^2.1.0"
+    eslint-visitor-keys "^2.0.0"
+    espree "^7.3.1"
+    esquery "^1.4.0"
+    esutils "^2.0.2"
+    fast-deep-equal "^3.1.3"
+    file-entry-cache "^6.0.1"
+    functional-red-black-tree "^1.0.1"
+    glob-parent "^5.1.2"
+    globals "^13.6.0"
+    ignore "^4.0.6"
+    import-fresh "^3.0.0"
+    imurmurhash "^0.1.4"
+    is-glob "^4.0.0"
+    js-yaml "^3.13.1"
+    json-stable-stringify-without-jsonify "^1.0.1"
+    levn "^0.4.1"
+    lodash.merge "^4.6.2"
+    minimatch "^3.0.4"
+    natural-compare "^1.4.0"
+    optionator "^0.9.1"
+    progress "^2.0.0"
+    regexpp "^3.1.0"
+    semver "^7.2.1"
+    strip-ansi "^6.0.0"
+    strip-json-comments "^3.1.0"
+    table "^6.0.9"
+    text-table "^0.2.0"
+    v8-compile-cache "^2.0.3"
+
+espree@^7.3.0, espree@^7.3.1:
+  version "7.3.1"
+  resolved "https://registry.yarnpkg.com/espree/-/espree-7.3.1.tgz#f2df330b752c6f55019f8bd89b7660039c1bbbb6"
+  integrity sha512-v3JCNCE64umkFpmkFGqzVKsOT0tN1Zr+ueqLZfpV1Ob8e+CEgPWa+OxCoGH3tnhimMKIaBm4m/vaRpJ/krRz2g==
+  dependencies:
+    acorn "^7.4.0"
+    acorn-jsx "^5.3.1"
+    eslint-visitor-keys "^1.3.0"
+
+esprima@^4.0.0:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/esprima/-/esprima-4.0.1.tgz#13b04cdb3e6c5d19df91ab6987a8695619b0aa71"
+  integrity sha512-eGuFFw7Upda+g4p+QHvnW0RyTX/SVeJBDM/gCtMARO0cLuT2HcEKnTPvhjV6aGeqrCB/sbNop0Kszm0jsaWU4A==
+
+esquery@^1.4.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/esquery/-/esquery-1.4.0.tgz#2148ffc38b82e8c7057dfed48425b3e61f0f24a5"
+  integrity sha512-cCDispWt5vHHtwMY2YrAQ4ibFkAL8RbH5YGBnZBc90MolvvfkkQcJro/aZiAQUlQ3qgrYS6D6v8Gc5G5CQsc9w==
+  dependencies:
+    estraverse "^5.1.0"
+
+esrecurse@^4.3.0:
+  version "4.3.0"
+  resolved "https://registry.yarnpkg.com/esrecurse/-/esrecurse-4.3.0.tgz#7ad7964d679abb28bee72cec63758b1c5d2c9921"
+  integrity sha512-KmfKL3b6G+RXvP8N1vr3Tq1kL/oCFgn2NYXEtqP8/L3pKapUA4G8cFVaoF3SU323CD4XypR/ffioHmkti6/Tag==
+  dependencies:
+    estraverse "^5.2.0"
+
+estraverse@^4.1.1:
+  version "4.3.0"
+  resolved "https://registry.yarnpkg.com/estraverse/-/estraverse-4.3.0.tgz#398ad3f3c5a24948be7725e83d11a7de28cdbd1d"
+  integrity sha512-39nnKffWz8xN1BU/2c79n9nB9HDzo0niYUqx6xyqUnyoAnQyyWpOTdZEeiCch8BBu515t4wp9ZmgVfVhn9EBpw==
+
+estraverse@^5.1.0, estraverse@^5.2.0:
+  version "5.2.0"
+  resolved "https://registry.yarnpkg.com/estraverse/-/estraverse-5.2.0.tgz#307df42547e6cc7324d3cf03c155d5cdb8c53880"
+  integrity sha512-BxbNGGNm0RyRYvUdHpIwv9IWzeM9XClbOxwoATuFdOE7ZE6wHL+HQ5T8hoPM+zHvmKzzsEqhgy0GrQ5X13afiQ==
+
+esutils@^2.0.2:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/esutils/-/esutils-2.0.3.tgz#74d2eb4de0b8da1293711910d50775b9b710ef64"
+  integrity sha512-kVscqXk4OCp68SZ0dkgEKVi6/8ij300KBWTJq32P/dYeWTSwK41WyTxalN1eRmA5Z9UU/LX9D7FWSmV9SAYx6g==
+
+events@^3.0.0:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/events/-/events-3.2.0.tgz#93b87c18f8efcd4202a461aec4dfc0556b639379"
+  integrity sha512-/46HWwbfCX2xTawVfkKLGxMifJYQBWMwY1mjywRtb4c9x8l5NP3KoJtnIOiL1hfdRkIuYhETxQlo62IF8tcnlg==
+
+evp_bytestokey@^1.0.0, evp_bytestokey@^1.0.3:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/evp_bytestokey/-/evp_bytestokey-1.0.3.tgz#7fcbdb198dc71959432efe13842684e0525acb02"
+  integrity sha512-/f2Go4TognH/KvCISP7OUsHn85hT9nUkxxA9BEWxFn+Oj9o8ZNLm/40hdlgSLyuOimsrTKLUMEorQexp/aPQeA==
+  dependencies:
+    md5.js "^1.3.4"
+    safe-buffer "^5.1.1"
+
+fast-deep-equal@^3.1.1, fast-deep-equal@^3.1.3:
+  version "3.1.3"
+  resolved "https://registry.yarnpkg.com/fast-deep-equal/-/fast-deep-equal-3.1.3.tgz#3a7d56b559d6cbc3eb512325244e619a65c6c525"
+  integrity sha512-f3qQ9oQy9j2AhBe/H9VC91wLmKBCCU/gDOnKNAYG5hswO7BLKj09Hc5HYNz9cGI++xlpDCIgDaitVs03ATR84Q==
+
+fast-json-stable-stringify@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/fast-json-stable-stringify/-/fast-json-stable-stringify-2.1.0.tgz#874bf69c6f404c2b5d99c481341399fd55892633"
+  integrity sha512-lhd/wF+Lk98HZoTCtlVraHtfh5XYijIjalXck7saUtuanSDyLMxnHhSXEDJqHxD7msR8D0uCmqlkwjCV8xvwHw==
+
+fast-levenshtein@^2.0.6:
+  version "2.0.6"
+  resolved "https://registry.yarnpkg.com/fast-levenshtein/-/fast-levenshtein-2.0.6.tgz#3d8a5c66883a16a30ca8643e851f19baa7797917"
+  integrity sha1-PYpcZog6FqMMqGQ+hR8Zuqd5eRc=
+
+fast-safe-stringify@^2.0.7:
+  version "2.0.7"
+  resolved "https://registry.yarnpkg.com/fast-safe-stringify/-/fast-safe-stringify-2.0.7.tgz#124aa885899261f68aedb42a7c080de9da608743"
+  integrity sha512-Utm6CdzT+6xsDk2m8S6uL8VHxNwI6Jub+e9NYTcAms28T84pTa25GJQV9j0CY0N1rM8hK4x6grpF2BQf+2qwVA==
+
+file-entry-cache@^6.0.1:
+  version "6.0.1"
+  resolved "https://registry.yarnpkg.com/file-entry-cache/-/file-entry-cache-6.0.1.tgz#211b2dd9659cb0394b073e7323ac3c933d522027"
+  integrity sha512-7Gps/XWymbLk2QLYK4NzpMOrYjMhdIxXuIvy2QBsLE6ljuodKvdkWs/cpyJJ3CVIVpH0Oi1Hvg1ovbMzLdFBBg==
+  dependencies:
+    flat-cache "^3.0.4"
+
+flat-cache@^3.0.4:
+  version "3.0.4"
+  resolved "https://registry.yarnpkg.com/flat-cache/-/flat-cache-3.0.4.tgz#61b0338302b2fe9f957dcc32fc2a87f1c3048b11"
+  integrity sha512-dm9s5Pw7Jc0GvMYbshN6zchCA9RgQlzzEZX3vylR9IqFfS8XciblUXOKfW6SiuJ0e13eDYZoZV5wdrev7P3Nwg==
+  dependencies:
+    flatted "^3.1.0"
+    rimraf "^3.0.2"
+
+flatted@^3.1.0:
+  version "3.2.2"
+  resolved "https://registry.yarnpkg.com/flatted/-/flatted-3.2.2.tgz#64bfed5cb68fe3ca78b3eb214ad97b63bedce561"
+  integrity sha512-JaTY/wtrcSyvXJl4IMFHPKyFur1sE9AUqc0QnhOaJ0CxHtAoIV8pYDzeEfAaNEtGkOfq4gr3LBFmdXW5mOQFnA==
+
+foreach@^2.0.5:
+  version "2.0.5"
+  resolved "https://registry.yarnpkg.com/foreach/-/foreach-2.0.5.tgz#0bee005018aeb260d0a3af3ae658dd0136ec1b99"
+  integrity sha1-C+4AUBiusmDQo6865ljdATbsG5k=
+
+fs.realpath@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/fs.realpath/-/fs.realpath-1.0.0.tgz#1504ad2523158caa40db4a2787cb01411994ea4f"
+  integrity sha1-FQStJSMVjKpA20onh8sBQRmU6k8=
+
+function-bind@^1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/function-bind/-/function-bind-1.1.1.tgz#a56899d3ea3c9bab874bb9773b7c5ede92f4895d"
+  integrity sha512-yIovAzMX49sF8Yl58fSCWJ5svSLuaibPxXQJFLmBObTuCr0Mf1KiPopGM9NiFjiYBCbfaa2Fh6breQ6ANVTI0A==
+
+functional-red-black-tree@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/functional-red-black-tree/-/functional-red-black-tree-1.0.1.tgz#1b0ab3bd553b2a0d6399d29c0e3ea0b252078327"
+  integrity sha1-GwqzvVU7Kg1jmdKcDj6gslIHgyc=
+
+get-assigned-identifiers@^1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/get-assigned-identifiers/-/get-assigned-identifiers-1.2.0.tgz#6dbf411de648cbaf8d9169ebb0d2d576191e2ff1"
+  integrity sha512-mBBwmeGTrxEMO4pMaaf/uUEFHnYtwr8FTe8Y/mer4rcV/bye0qGm6pw1bGZFGStxC5O76c5ZAVBGnqHmOaJpdQ==
+
+get-intrinsic@^1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/get-intrinsic/-/get-intrinsic-1.0.2.tgz#6820da226e50b24894e08859469dc68361545d49"
+  integrity sha512-aeX0vrFm21ILl3+JpFFRNe9aUvp6VFZb2/CTbgLb8j75kOhvoNYjt9d8KA/tJG4gSo8nzEDedRl0h7vDmBYRVg==
+  dependencies:
+    function-bind "^1.1.1"
+    has "^1.0.3"
+    has-symbols "^1.0.1"
+
+glob-parent@^5.1.2:
+  version "5.1.2"
+  resolved "https://registry.yarnpkg.com/glob-parent/-/glob-parent-5.1.2.tgz#869832c58034fe68a4093c17dc15e8340d8401c4"
+  integrity sha512-AOIgSQCepiJYwP3ARnGx+5VnTu2HBYdzbGP45eLw1vr3zB3vZLeyed1sC9hnbcOc9/SrMyM5RPQrkGz4aS9Zow==
+  dependencies:
+    is-glob "^4.0.1"
+
+glob@^7.1.0:
+  version "7.1.6"
+  resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.6.tgz#141f33b81a7c2492e125594307480c46679278a6"
+  integrity sha512-LwaxwyZ72Lk7vZINtNNrywX0ZuLyStrdDtabefZKAY5ZGJhVtgdznluResxNmPitE0SAO+O26sWTHeKSI2wMBA==
+  dependencies:
+    fs.realpath "^1.0.0"
+    inflight "^1.0.4"
+    inherits "2"
+    minimatch "^3.0.4"
+    once "^1.3.0"
+    path-is-absolute "^1.0.0"
+
+glob@^7.1.3:
+  version "7.1.7"
+  resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.7.tgz#3b193e9233f01d42d0b3f78294bbeeb418f94a90"
+  integrity sha512-OvD9ENzPLbegENnYP5UUfJIirTg4+XwMWGaQfQTY0JenxNvvIKP3U3/tAQSPIu/lHxXYSZmpXlUHeqAIdKzBLQ==
+  dependencies:
+    fs.realpath "^1.0.0"
+    inflight "^1.0.4"
+    inherits "2"
+    minimatch "^3.0.4"
+    once "^1.3.0"
+    path-is-absolute "^1.0.0"
+
+globals@^13.6.0, globals@^13.9.0:
+  version "13.11.0"
+  resolved "https://registry.yarnpkg.com/globals/-/globals-13.11.0.tgz#40ef678da117fe7bd2e28f1fab24951bd0255be7"
+  integrity sha512-08/xrJ7wQjK9kkkRoI3OFUBbLx4f+6x3SGwcPvQ0QH6goFDrOU2oyAWrmh3dJezu65buo+HBMzAMQy6rovVC3g==
+  dependencies:
+    type-fest "^0.20.2"
+
+has-flag@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-3.0.0.tgz#b5d454dc2199ae225699f3467e5a07f3b955bafd"
+  integrity sha1-tdRU3CGZriJWmfNGfloH87lVuv0=
+
+has-flag@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-4.0.0.tgz#944771fd9c81c81265c4d6941860da06bb59479b"
+  integrity sha512-EykJT/Q1KjTWctppgIAgfSO0tKVuZUjhgMr17kqTumMl6Afv3EISleU7qZUzoXDFTAHTDC4NOoG/ZxU3EvlMPQ==
+
+has-symbols@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/has-symbols/-/has-symbols-1.0.1.tgz#9f5214758a44196c406d9bd76cebf81ec2dd31e8"
+  integrity sha512-PLcsoqu++dmEIZB+6totNFKq/7Do+Z0u4oT0zKOJNl3lYK6vGwwu2hjHs+68OEZbTjiUE9bgOABXbP/GvrS0Kg==
+
+has@^1.0.0, has@^1.0.3:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/has/-/has-1.0.3.tgz#722d7cbfc1f6aa8241f16dd814e011e1f41e8796"
+  integrity sha512-f2dvO0VU6Oej7RkWJGrehjbzMAjFp5/VKPp5tTpWIV4JHHZK1/BxbFRtf/siA2SWTe09caDmVtYYzWEIbBS4zw==
+  dependencies:
+    function-bind "^1.1.1"
+
+hash-base@^3.0.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/hash-base/-/hash-base-3.1.0.tgz#55c381d9e06e1d2997a883b4a3fddfe7f0d3af33"
+  integrity sha512-1nmYp/rhMDiE7AYkDw+lLwlAzz0AntGIe51F3RfFfEqyQ3feY2eI/NcwC6umIQVOASPMsWJLJScWKSSvzL9IVA==
+  dependencies:
+    inherits "^2.0.4"
+    readable-stream "^3.6.0"
+    safe-buffer "^5.2.0"
+
+hash.js@^1.0.0, hash.js@^1.0.3:
+  version "1.1.7"
+  resolved "https://registry.yarnpkg.com/hash.js/-/hash.js-1.1.7.tgz#0babca538e8d4ee4a0f8988d68866537a003cf42"
+  integrity sha512-taOaskGt4z4SOANNseOviYDvjEJinIkRgmp7LbKP2YTTmVxWBl87s/uzK9r+44BclBSp2X7K1hqeNfz9JbBeXA==
+  dependencies:
+    inherits "^2.0.3"
+    minimalistic-assert "^1.0.1"
+
+hmac-drbg@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/hmac-drbg/-/hmac-drbg-1.0.1.tgz#d2745701025a6c775a6c545793ed502fc0c649a1"
+  integrity sha1-0nRXAQJabHdabFRXk+1QL8DGSaE=
+  dependencies:
+    hash.js "^1.0.3"
+    minimalistic-assert "^1.0.0"
+    minimalistic-crypto-utils "^1.0.1"
+
+htmlescape@^1.1.0:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/htmlescape/-/htmlescape-1.1.1.tgz#3a03edc2214bca3b66424a3e7959349509cb0351"
+  integrity sha1-OgPtwiFLyjtmQko+eVk0lQnLA1E=
+
+https-browserify@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/https-browserify/-/https-browserify-1.0.0.tgz#ec06c10e0a34c0f2faf199f7fd7fc78fffd03c73"
+  integrity sha1-7AbBDgo0wPL68Zn3/X/Hj//QPHM=
+
+ieee754@^1.1.4:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/ieee754/-/ieee754-1.2.1.tgz#8eb7a10a63fff25d15a57b001586d177d1b0d352"
+  integrity sha512-dcyqhDvX1C46lXZcVqCpK+FtMRQVdIMN6/Df5js2zouUsqG7I6sFxitIC+7KYK29KdXOLHdu9zL4sFnoVQnqaA==
+
+ignore@^4.0.6:
+  version "4.0.6"
+  resolved "https://registry.yarnpkg.com/ignore/-/ignore-4.0.6.tgz#750e3db5862087b4737ebac8207ffd1ef27b25fc"
+  integrity sha512-cyFDKrqc/YdcWFniJhzI42+AzS+gNwmUzOSFcRCQYwySuBBBy/KjuxWLZ/FHEH6Moq1NizMOBWyTcv8O4OZIMg==
+
+import-fresh@^3.0.0, import-fresh@^3.2.1:
+  version "3.3.0"
+  resolved "https://registry.yarnpkg.com/import-fresh/-/import-fresh-3.3.0.tgz#37162c25fcb9ebaa2e6e53d5b4d88ce17d9e0c2b"
+  integrity sha512-veYYhQa+D1QBKznvhUHxb8faxlrwUnxseDAbAp457E0wLNio2bOSKnjYDhMj+YiAq61xrMGhQk9iXVk5FzgQMw==
+  dependencies:
+    parent-module "^1.0.0"
+    resolve-from "^4.0.0"
+
+imurmurhash@^0.1.4:
+  version "0.1.4"
+  resolved "https://registry.yarnpkg.com/imurmurhash/-/imurmurhash-0.1.4.tgz#9218b9b2b928a238b13dc4fb6b6d576f231453ea"
+  integrity sha1-khi5srkoojixPcT7a21XbyMUU+o=
+
+inflight@^1.0.4:
+  version "1.0.6"
+  resolved "https://registry.yarnpkg.com/inflight/-/inflight-1.0.6.tgz#49bd6331d7d02d0c09bc910a1075ba8165b56df9"
+  integrity sha1-Sb1jMdfQLQwJvJEKEHW6gWW1bfk=
+  dependencies:
+    once "^1.3.0"
+    wrappy "1"
+
+inherits@2, inherits@^2.0.1, inherits@^2.0.3, inherits@^2.0.4, inherits@~2.0.1, inherits@~2.0.3, inherits@~2.0.4:
+  version "2.0.4"
+  resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.4.tgz#0fa2c64f932917c3433a0ded55363aae37416b7c"
+  integrity sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==
+
+inherits@2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.1.tgz#b17d08d326b4423e568eff719f91b0b1cbdf69f1"
+  integrity sha1-sX0I0ya0Qj5Wjv9xn5GwscvfafE=
+
+inline-source-map@~0.6.0:
+  version "0.6.2"
+  resolved "https://registry.yarnpkg.com/inline-source-map/-/inline-source-map-0.6.2.tgz#f9393471c18a79d1724f863fa38b586370ade2a5"
+  integrity sha1-+Tk0ccGKedFyT4Y/o4tYY3Ct4qU=
+  dependencies:
+    source-map "~0.5.3"
+
+insert-module-globals@^7.2.1:
+  version "7.2.1"
+  resolved "https://registry.yarnpkg.com/insert-module-globals/-/insert-module-globals-7.2.1.tgz#d5e33185181a4e1f33b15f7bf100ee91890d5cb3"
+  integrity sha512-ufS5Qq9RZN+Bu899eA9QCAYThY+gGW7oRkmb0vC93Vlyu/CFGcH0OYPEjVkDXA5FEbTt1+VWzdoOD3Ny9N+8tg==
+  dependencies:
+    JSONStream "^1.0.3"
+    acorn-node "^1.5.2"
+    combine-source-map "^0.8.0"
+    concat-stream "^1.6.1"
+    is-buffer "^1.1.0"
+    path-is-absolute "^1.0.1"
+    process "~0.11.0"
+    through2 "^2.0.0"
+    undeclared-identifiers "^1.1.2"
+    xtend "^4.0.0"
+
+is-arguments@^1.0.4:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/is-arguments/-/is-arguments-1.1.0.tgz#62353031dfbee07ceb34656a6bde59efecae8dd9"
+  integrity sha512-1Ij4lOMPl/xB5kBDn7I+b2ttPMKa8szhEIrXDuXQD/oe3HJLTLhqhgGspwgyGd6MOywBUqVvYicF72lkgDnIHg==
+  dependencies:
+    call-bind "^1.0.0"
+
+is-buffer@^1.1.0:
+  version "1.1.6"
+  resolved "https://registry.yarnpkg.com/is-buffer/-/is-buffer-1.1.6.tgz#efaa2ea9daa0d7ab2ea13a97b2b8ad51fefbe8be"
+  integrity sha512-NcdALwpXkTm5Zvvbk7owOUSvVvBKDgKP5/ewfXEznmQFfs4ZRmanOeKBTjRVjka3QFoN6XJ+9F3USqfHqTaU5w==
+
+is-callable@^1.1.4, is-callable@^1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/is-callable/-/is-callable-1.2.2.tgz#c7c6715cd22d4ddb48d3e19970223aceabb080d9"
+  integrity sha512-dnMqspv5nU3LoewK2N/y7KLtxtakvTuaCsU9FU50/QDmdbHNy/4/JuRtMHqRU22o3q+W89YQndQEeCVwK+3qrA==
+
+is-core-module@^2.1.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/is-core-module/-/is-core-module-2.2.0.tgz#97037ef3d52224d85163f5597b2b63d9afed981a"
+  integrity sha512-XRAfAdyyY5F5cOXn7hYQDqh2Xmii+DEfIcQGxK/uNwMHhIkPWO0g8msXcbzLe+MpGoR951MlqM/2iIlU4vKDdQ==
+  dependencies:
+    has "^1.0.3"
+
+is-date-object@^1.0.1:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/is-date-object/-/is-date-object-1.0.2.tgz#bda736f2cd8fd06d32844e7743bfa7494c3bfd7e"
+  integrity sha512-USlDT524woQ08aoZFzh3/Z6ch9Y/EWXEHQ/AaRN0SkKq4t2Jw2R2339tSXmwuVoY7LLlBCbOIlx2myP/L5zk0g==
+
+is-extglob@^2.1.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/is-extglob/-/is-extglob-2.1.1.tgz#a88c02535791f02ed37c76a1b9ea9773c833f8c2"
+  integrity sha1-qIwCU1eR8C7TfHahueqXc8gz+MI=
+
+is-fullwidth-code-point@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/is-fullwidth-code-point/-/is-fullwidth-code-point-3.0.0.tgz#f116f8064fe90b3f7844a38997c0b75051269f1d"
+  integrity sha512-zymm5+u+sCsSWyD9qNaejV3DFvhCKclKdizYaJUuHA83RLjb7nSuGnddCHGv0hk+KY7BMAlsWeK4Ueg6EV6XQg==
+
+is-generator-function@^1.0.7:
+  version "1.0.8"
+  resolved "https://registry.yarnpkg.com/is-generator-function/-/is-generator-function-1.0.8.tgz#dfb5c2b120e02b0a8d9d2c6806cd5621aa922f7b"
+  integrity sha512-2Omr/twNtufVZFr1GhxjOMFPAj2sjc/dKaIqBhvo4qciXfJmITGH6ZGd8eZYNHza8t1y0e01AuqRhJwfWp26WQ==
+
+is-glob@^4.0.0, is-glob@^4.0.1:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/is-glob/-/is-glob-4.0.1.tgz#7567dbe9f2f5e2467bc77ab83c4a29482407a5dc"
+  integrity sha512-5G0tKtBTFImOqDnLB2hG6Bp2qcKEFduo4tZu9MT/H6NQv/ghhy30o55ufafxJ/LdH79LLs2Kfrn85TLKyA7BUg==
+  dependencies:
+    is-extglob "^2.1.1"
+
+is-negative-zero@^2.0.0:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/is-negative-zero/-/is-negative-zero-2.0.1.tgz#3de746c18dda2319241a53675908d8f766f11c24"
+  integrity sha512-2z6JzQvZRa9A2Y7xC6dQQm4FSTSTNWjKIYYTt4246eMTJmIo0Q+ZyOsU66X8lxK1AbB92dFeglPLrhwpeRKO6w==
+
+is-regex@^1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/is-regex/-/is-regex-1.1.1.tgz#c6f98aacc546f6cec5468a07b7b153ab564a57b9"
+  integrity sha512-1+QkEcxiLlB7VEyFtyBg94e08OAsvq7FUBgApTq/w2ymCLyKJgDPsybBENVtA7XCQEgEXxKPonG+mvYRxh/LIg==
+  dependencies:
+    has-symbols "^1.0.1"
+
+is-symbol@^1.0.2:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/is-symbol/-/is-symbol-1.0.3.tgz#38e1014b9e6329be0de9d24a414fd7441ec61937"
+  integrity sha512-OwijhaRSgqvhm/0ZdAcXNZt9lYdKFpcRDT5ULUuYXPoT794UNOdU+gpT6Rzo7b4V2HUl/op6GqY894AZwv9faQ==
+  dependencies:
+    has-symbols "^1.0.1"
+
+is-typed-array@^1.1.3:
+  version "1.1.4"
+  resolved "https://registry.yarnpkg.com/is-typed-array/-/is-typed-array-1.1.4.tgz#1f66f34a283a3c94a4335434661ca53fff801120"
+  integrity sha512-ILaRgn4zaSrVNXNGtON6iFNotXW3hAPF3+0fB1usg2jFlWqo5fEDdmJkz0zBfoi7Dgskr8Khi2xZ8cXqZEfXNA==
+  dependencies:
+    available-typed-arrays "^1.0.2"
+    call-bind "^1.0.0"
+    es-abstract "^1.18.0-next.1"
+    foreach "^2.0.5"
+    has-symbols "^1.0.1"
+
+isarray@~1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/isarray/-/isarray-1.0.0.tgz#bb935d48582cba168c06834957a54a3e07124f11"
+  integrity sha1-u5NdSFgsuhaMBoNJV6VKPgcSTxE=
+
+isexe@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/isexe/-/isexe-2.0.0.tgz#e8fbf374dc556ff8947a10dcb0572d633f2cfa10"
+  integrity sha1-6PvzdNxVb/iUehDcsFctYz8s+hA=
+
+js-tokens@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-4.0.0.tgz#19203fb59991df98e3a287050d4647cdeaf32499"
+  integrity sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ==
+
+js-yaml@^3.13.1:
+  version "3.14.1"
+  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.14.1.tgz#dae812fdb3825fa306609a8717383c50c36a0537"
+  integrity sha512-okMH7OXXJ7YrN9Ok3/SXrnu4iX9yOk+25nqX4imS2npuvTYDmo/QEZoqwZkYaIDk3jVvBOTOIEgEhaLOynBS9g==
+  dependencies:
+    argparse "^1.0.7"
+    esprima "^4.0.0"
+
+json-schema-traverse@^0.4.1:
+  version "0.4.1"
+  resolved "https://registry.yarnpkg.com/json-schema-traverse/-/json-schema-traverse-0.4.1.tgz#69f6a87d9513ab8bb8fe63bdb0979c448e684660"
+  integrity sha512-xbbCH5dCYU5T8LcEhhuh7HJ88HXuW3qsI3Y0zOZFKfZEHcpWiHU/Jxzk629Brsab/mMiHQti9wMP+845RPe3Vg==
+
+json-schema-traverse@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/json-schema-traverse/-/json-schema-traverse-1.0.0.tgz#ae7bcb3656ab77a73ba5c49bf654f38e6b6860e2"
+  integrity sha512-NM8/P9n3XjXhIZn1lLhkFaACTOURQXjWhV4BA/RnOv8xvgqtqpAX9IO4mRQxSx1Rlo4tqzeqb0sOlruaOy3dug==
+
+json-stable-stringify-without-jsonify@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/json-stable-stringify-without-jsonify/-/json-stable-stringify-without-jsonify-1.0.1.tgz#9db7b59496ad3f3cfef30a75142d2d930ad72651"
+  integrity sha1-nbe1lJatPzz+8wp1FC0tkwrXJlE=
+
+jsonparse@^1.2.0:
+  version "1.3.1"
+  resolved "https://registry.yarnpkg.com/jsonparse/-/jsonparse-1.3.1.tgz#3f4dae4a91fac315f71062f8521cc239f1366280"
+  integrity sha1-P02uSpH6wxX3EGL4UhzCOfE2YoA=
+
+labeled-stream-splicer@^2.0.0:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/labeled-stream-splicer/-/labeled-stream-splicer-2.0.2.tgz#42a41a16abcd46fd046306cf4f2c3576fffb1c21"
+  integrity sha512-Ca4LSXFFZUjPScRaqOcFxneA0VpKZr4MMYCljyQr4LIewTLb3Y0IUTIsnBBsVubIeEfxeSZpSjSsRM8APEQaAw==
+  dependencies:
+    inherits "^2.0.1"
+    stream-splicer "^2.0.0"
+
+levn@^0.4.1:
+  version "0.4.1"
+  resolved "https://registry.yarnpkg.com/levn/-/levn-0.4.1.tgz#ae4562c007473b932a6200d403268dd2fffc6ade"
+  integrity sha512-+bT2uH4E5LGE7h/n3evcS/sQlJXCpIp6ym8OWJ5eV6+67Dsql/LaaT7qJBAt2rzfoa/5QBGBhxDix1dMt2kQKQ==
+  dependencies:
+    prelude-ls "^1.2.1"
+    type-check "~0.4.0"
+
+lodash.clonedeep@^4.5.0:
+  version "4.5.0"
+  resolved "https://registry.yarnpkg.com/lodash.clonedeep/-/lodash.clonedeep-4.5.0.tgz#e23f3f9c4f8fbdde872529c1071857a086e5ccef"
+  integrity sha1-4j8/nE+Pvd6HJSnBBxhXoIblzO8=
+
+lodash.memoize@~3.0.3:
+  version "3.0.4"
+  resolved "https://registry.yarnpkg.com/lodash.memoize/-/lodash.memoize-3.0.4.tgz#2dcbd2c287cbc0a55cc42328bd0c736150d53e3f"
+  integrity sha1-LcvSwofLwKVcxCMovQxzYVDVPj8=
+
+lodash.merge@^4.6.2:
+  version "4.6.2"
+  resolved "https://registry.yarnpkg.com/lodash.merge/-/lodash.merge-4.6.2.tgz#558aa53b43b661e1925a0afdfa36a9a1085fe57a"
+  integrity sha512-0KpjqXRVvrYyCsX1swR/XTK0va6VQkQM6MNo7PqW77ByjAhoARA8EfrP1N4+KlKj8YS0ZUCtRT/YUuhyYDujIQ==
+
+lodash.truncate@^4.4.2:
+  version "4.4.2"
+  resolved "https://registry.yarnpkg.com/lodash.truncate/-/lodash.truncate-4.4.2.tgz#5a350da0b1113b837ecfffd5812cbe58d6eae193"
+  integrity sha1-WjUNoLERO4N+z//VgSy+WNbq4ZM=
+
+lodash@^4.17.4:
+  version "4.17.20"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.20.tgz#b44a9b6297bcb698f1c51a3545a2b3b368d59c52"
+  integrity sha512-PlhdFcillOINfeV7Ni6oF1TAEayyZBoZ8bcshTHqOYJYlrqzRK5hagpagky5o4HfCzzd1TRkXPMFq6cKk9rGmA==
+
+lru-cache@^6.0.0:
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/lru-cache/-/lru-cache-6.0.0.tgz#6d6fe6570ebd96aaf90fcad1dafa3b2566db3a94"
+  integrity sha512-Jo6dJ04CmSjuznwJSS3pUeWmd/H0ffTlkXXgwZi+eq1UCmqQwCh+eLsYOYCwY991i2Fah4h1BEMCx4qThGbsiA==
+  dependencies:
+    yallist "^4.0.0"
+
+md5.js@^1.3.4:
+  version "1.3.5"
+  resolved "https://registry.yarnpkg.com/md5.js/-/md5.js-1.3.5.tgz#b5d07b8e3216e3e27cd728d72f70d1e6a342005f"
+  integrity sha512-xitP+WxNPcTTOgnTJcrhM0xvdPepipPSf3I8EIpGKeFLjt3PlJLIDG3u8EX53ZIubkb+5U2+3rELYpEhHhzdkg==
+  dependencies:
+    hash-base "^3.0.0"
+    inherits "^2.0.1"
+    safe-buffer "^5.1.2"
+
+miller-rabin@^4.0.0:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/miller-rabin/-/miller-rabin-4.0.1.tgz#f080351c865b0dc562a8462966daa53543c78a4d"
+  integrity sha512-115fLhvZVqWwHPbClyntxEVfVDfl9DLLTuJvq3g2O/Oxi8AiNouAHvDSzHS0viUJc+V5vm3eq91Xwqn9dp4jRA==
+  dependencies:
+    bn.js "^4.0.0"
+    brorand "^1.0.1"
+
+minimalistic-assert@^1.0.0, minimalistic-assert@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/minimalistic-assert/-/minimalistic-assert-1.0.1.tgz#2e194de044626d4a10e7f7fbc00ce73e83e4d5c7"
+  integrity sha512-UtJcAD4yEaGtjPezWuO9wC4nwUnVH/8/Im3yEHQP4b67cXlD/Qr9hdITCU1xDbSEXg2XKNaP8jsReV7vQd00/A==
+
+minimalistic-crypto-utils@^1.0.0, minimalistic-crypto-utils@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/minimalistic-crypto-utils/-/minimalistic-crypto-utils-1.0.1.tgz#f6c00c1c0b082246e5c4d99dfb8c7c083b2b582a"
+  integrity sha1-9sAMHAsIIkblxNmd+4x8CDsrWCo=
+
+minimatch@^3.0.4:
+  version "3.0.4"
+  resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-3.0.4.tgz#5166e286457f03306064be5497e8dbb0c3d32083"
+  integrity sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==
+  dependencies:
+    brace-expansion "^1.1.7"
+
+minimist@^1.1.0, minimist@^1.1.1:
+  version "1.2.5"
+  resolved "https://registry.yarnpkg.com/minimist/-/minimist-1.2.5.tgz#67d66014b66a6a8aaa0c083c5fd58df4e4e97602"
+  integrity sha512-FM9nNUYrRBAELZQT3xeZQ7fmMOBg6nWNmJKTcgsJeaLstP/UODVpGsr5OhXhhXg6f+qtJ8uiZ+PUxkDWcgIXLw==
+
+mkdirp-classic@^0.5.2:
+  version "0.5.3"
+  resolved "https://registry.yarnpkg.com/mkdirp-classic/-/mkdirp-classic-0.5.3.tgz#fa10c9115cc6d8865be221ba47ee9bed78601113"
+  integrity sha512-gKLcREMhtuZRwRAfqP3RFW+TK4JqApVBtOIftVgjuABpAtpxhPGaDcfvbhNvD0B8iD1oUr/txX35NjcaY6Ns/A==
+
+module-deps@^6.2.3:
+  version "6.2.3"
+  resolved "https://registry.yarnpkg.com/module-deps/-/module-deps-6.2.3.tgz#15490bc02af4b56cf62299c7c17cba32d71a96ee"
+  integrity sha512-fg7OZaQBcL4/L+AK5f4iVqf9OMbCclXfy/znXRxTVhJSeW5AIlS9AwheYwDaXM3lVW7OBeaeUEY3gbaC6cLlSA==
+  dependencies:
+    JSONStream "^1.0.3"
+    browser-resolve "^2.0.0"
+    cached-path-relative "^1.0.2"
+    concat-stream "~1.6.0"
+    defined "^1.0.0"
+    detective "^5.2.0"
+    duplexer2 "^0.1.2"
+    inherits "^2.0.1"
+    parents "^1.0.0"
+    readable-stream "^2.0.2"
+    resolve "^1.4.0"
+    stream-combiner2 "^1.1.1"
+    subarg "^1.0.0"
+    through2 "^2.0.0"
+    xtend "^4.0.0"
+
+ms@2.1.2:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.2.tgz#d09d1f357b443f493382a8eb3ccd183872ae6009"
+  integrity sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==
+
+natural-compare@^1.4.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/natural-compare/-/natural-compare-1.4.0.tgz#4abebfeed7541f2c27acfb29bdbbd15c8d5ba4f7"
+  integrity sha1-Sr6/7tdUHywnrPspvbvRXI1bpPc=
+
+object-assign@^4.1.1:
+  version "4.1.1"
+  resolved "https://registry.yarnpkg.com/object-assign/-/object-assign-4.1.1.tgz#2109adc7965887cfc05cbbd442cac8bfbb360863"
+  integrity sha1-IQmtx5ZYh8/AXLvUQsrIv7s2CGM=
+
+object-inspect@^1.8.0:
+  version "1.9.0"
+  resolved "https://registry.yarnpkg.com/object-inspect/-/object-inspect-1.9.0.tgz#c90521d74e1127b67266ded3394ad6116986533a"
+  integrity sha512-i3Bp9iTqwhaLZBxGkRfo5ZbE07BQRT7MGu8+nNgwW9ItGp1TzCTw2DLEoWwjClxBjOFI/hWljTAmYGCEwmtnOw==
+
+object-keys@^1.0.12, object-keys@^1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/object-keys/-/object-keys-1.1.1.tgz#1c47f272df277f3b1daf061677d9c82e2322c60e"
+  integrity sha512-NuAESUOUMrlIXOfHKzD6bpPu3tYt3xvjNdRIQ+FeT0lNb4K8WR70CaDxhuNguS2XG+GjkyMwOzsN5ZktImfhLA==
+
+object.assign@^4.1.1:
+  version "4.1.2"
+  resolved "https://registry.yarnpkg.com/object.assign/-/object.assign-4.1.2.tgz#0ed54a342eceb37b38ff76eb831a0e788cb63940"
+  integrity sha512-ixT2L5THXsApyiUPYKmW+2EHpXXe5Ii3M+f4e+aJFAHao5amFRW6J0OO6c/LU8Be47utCx2GL89hxGB6XSmKuQ==
+  dependencies:
+    call-bind "^1.0.0"
+    define-properties "^1.1.3"
+    has-symbols "^1.0.1"
+    object-keys "^1.1.1"
+
+once@^1.3.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/once/-/once-1.4.0.tgz#583b1aa775961d4b113ac17d9c50baef9dd76bd1"
+  integrity sha1-WDsap3WWHUsROsF9nFC6753Xa9E=
+  dependencies:
+    wrappy "1"
+
+optionator@^0.9.1:
+  version "0.9.1"
+  resolved "https://registry.yarnpkg.com/optionator/-/optionator-0.9.1.tgz#4f236a6373dae0566a6d43e1326674f50c291499"
+  integrity sha512-74RlY5FCnhq4jRxVUPKDaRwrVNXMqsGsiW6AJw4XK8hmtm10wC0ypZBLw5IIp85NZMr91+qd1RvvENwg7jjRFw==
+  dependencies:
+    deep-is "^0.1.3"
+    fast-levenshtein "^2.0.6"
+    levn "^0.4.1"
+    prelude-ls "^1.2.1"
+    type-check "^0.4.0"
+    word-wrap "^1.2.3"
+
+os-browserify@~0.3.0:
+  version "0.3.0"
+  resolved "https://registry.yarnpkg.com/os-browserify/-/os-browserify-0.3.0.tgz#854373c7f5c2315914fc9bfc6bd8238fdda1ec27"
+  integrity sha1-hUNzx/XCMVkU/Jv8a9gjj92h7Cc=
+
+pako@~1.0.5:
+  version "1.0.11"
+  resolved "https://registry.yarnpkg.com/pako/-/pako-1.0.11.tgz#6c9599d340d54dfd3946380252a35705a6b992bf"
+  integrity sha512-4hLB8Py4zZce5s4yd9XzopqwVv/yGNhV1Bl8NTmCq1763HeK2+EwVTv+leGeL13Dnh2wfbqowVPXCIO0z4taYw==
+
+parent-module@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/parent-module/-/parent-module-1.0.1.tgz#691d2709e78c79fae3a156622452d00762caaaa2"
+  integrity sha512-GQ2EWRpQV8/o+Aw8YqtfZZPfNRWZYkbidE9k5rpl/hC3vtHHBfGm2Ifi6qWV+coDGkrUKZAxE3Lot5kcsRlh+g==
+  dependencies:
+    callsites "^3.0.0"
+
+parents@^1.0.0, parents@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/parents/-/parents-1.0.1.tgz#fedd4d2bf193a77745fe71e371d73c3307d9c751"
+  integrity sha1-/t1NK/GTp3dF/nHjcdc8MwfZx1E=
+  dependencies:
+    path-platform "~0.11.15"
+
+parse-asn1@^5.0.0, parse-asn1@^5.1.5:
+  version "5.1.6"
+  resolved "https://registry.yarnpkg.com/parse-asn1/-/parse-asn1-5.1.6.tgz#385080a3ec13cb62a62d39409cb3e88844cdaed4"
+  integrity sha512-RnZRo1EPU6JBnra2vGHj0yhp6ebyjBZpmUCLHWiFhxlzvBCCpAuZ7elsBp1PVAbQN0/04VD/19rfzlBSwLstMw==
+  dependencies:
+    asn1.js "^5.2.0"
+    browserify-aes "^1.0.0"
+    evp_bytestokey "^1.0.0"
+    pbkdf2 "^3.0.3"
+    safe-buffer "^5.1.1"
+
+path-browserify@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/path-browserify/-/path-browserify-1.0.1.tgz#d98454a9c3753d5790860f16f68867b9e46be1fd"
+  integrity sha512-b7uo2UCUOYZcnF/3ID0lulOJi/bafxa1xPe7ZPsammBSpjSWQkjNxlt635YGS2MiR9GjvuXCtz2emr3jbsz98g==
+
+path-is-absolute@^1.0.0, path-is-absolute@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/path-is-absolute/-/path-is-absolute-1.0.1.tgz#174b9268735534ffbc7ace6bf53a5a9e1b5c5f5f"
+  integrity sha1-F0uSaHNVNP+8es5r9TpanhtcX18=
+
+path-key@^3.1.0:
+  version "3.1.1"
+  resolved "https://registry.yarnpkg.com/path-key/-/path-key-3.1.1.tgz#581f6ade658cbba65a0d3380de7753295054f375"
+  integrity sha512-ojmeN0qd+y0jszEtoY48r0Peq5dwMEkIlCOu6Q5f41lfkswXuKtYrhgoTpLnyIcHm24Uhqx+5Tqm2InSwLhE6Q==
+
+path-parse@^1.0.6:
+  version "1.0.6"
+  resolved "https://registry.yarnpkg.com/path-parse/-/path-parse-1.0.6.tgz#d62dbb5679405d72c4737ec58600e9ddcf06d24c"
+  integrity sha512-GSmOT2EbHrINBf9SR7CDELwlJ8AENk3Qn7OikK4nFYAu3Ote2+JYNVvkpAEQm3/TLNEJFD/xZJjzyxg3KBWOzw==
+
+path-platform@~0.11.15:
+  version "0.11.15"
+  resolved "https://registry.yarnpkg.com/path-platform/-/path-platform-0.11.15.tgz#e864217f74c36850f0852b78dc7bf7d4a5721bf2"
+  integrity sha1-6GQhf3TDaFDwhSt43Hv31KVyG/I=
+
+pbkdf2@^3.0.3:
+  version "3.1.1"
+  resolved "https://registry.yarnpkg.com/pbkdf2/-/pbkdf2-3.1.1.tgz#cb8724b0fada984596856d1a6ebafd3584654b94"
+  integrity sha512-4Ejy1OPxi9f2tt1rRV7Go7zmfDQ+ZectEQz3VGUQhgq62HtIRPDyG/JtnwIxs6x3uNMwo2V7q1fMvKjb+Tnpqg==
+  dependencies:
+    create-hash "^1.1.2"
+    create-hmac "^1.1.4"
+    ripemd160 "^2.0.1"
+    safe-buffer "^5.0.1"
+    sha.js "^2.4.8"
+
+platform@^1.3.3:
+  version "1.3.6"
+  resolved "https://registry.yarnpkg.com/platform/-/platform-1.3.6.tgz#48b4ce983164b209c2d45a107adb31f473a6e7a7"
+  integrity sha512-fnWVljUchTro6RiCFvCXBbNhJc2NijN7oIQxbwsyL0buWJPG85v81ehlHI9fXrJsMNgTofEoWIQeClKpgxFLrg==
+
+prelude-ls@^1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/prelude-ls/-/prelude-ls-1.2.1.tgz#debc6489d7a6e6b0e7611888cec880337d316396"
+  integrity sha512-vkcDPrRZo1QZLbn5RLGPpg/WmIQ65qoWWhcGKf/b5eplkkarX0m9z8ppCat4mlOqUsWpyNuYgO3VRyrYHSzX5g==
+
+process-nextick-args@~2.0.0:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/process-nextick-args/-/process-nextick-args-2.0.1.tgz#7820d9b16120cc55ca9ae7792680ae7dba6d7fe2"
+  integrity sha512-3ouUOpQhtgrbOa17J7+uxOTpITYWaGP7/AhoR3+A+/1e9skrzelGi/dXzEYyvbxubEF6Wn2ypscTKiKJFFn1ag==
+
+process@~0.11.0:
+  version "0.11.10"
+  resolved "https://registry.yarnpkg.com/process/-/process-0.11.10.tgz#7332300e840161bda3e69a1d1d91a7d4bc16f182"
+  integrity sha1-czIwDoQBYb2j5podHZGn1LwW8YI=
+
+progress@^2.0.0:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/progress/-/progress-2.0.3.tgz#7e8cf8d8f5b8f239c1bc68beb4eb78567d572ef8"
+  integrity sha512-7PiHtLll5LdnKIMw100I+8xJXR5gW2QwWYkT6iJva0bXitZKa/XMrSbdmg3r2Xnaidz9Qumd0VPaMrZlF9V9sA==
+
+public-encrypt@^4.0.0:
+  version "4.0.3"
+  resolved "https://registry.yarnpkg.com/public-encrypt/-/public-encrypt-4.0.3.tgz#4fcc9d77a07e48ba7527e7cbe0de33d0701331e0"
+  integrity sha512-zVpa8oKZSz5bTMTFClc1fQOnyyEzpl5ozpi1B5YcvBrdohMjH2rfsBtyXcuNuwjsDIXmBYlF2N5FlJYhR29t8Q==
+  dependencies:
+    bn.js "^4.1.0"
+    browserify-rsa "^4.0.0"
+    create-hash "^1.1.0"
+    parse-asn1 "^5.0.0"
+    randombytes "^2.0.1"
+    safe-buffer "^5.1.2"
+
+punycode@1.3.2:
+  version "1.3.2"
+  resolved "https://registry.yarnpkg.com/punycode/-/punycode-1.3.2.tgz#9653a036fb7c1ee42342f2325cceefea3926c48d"
+  integrity sha1-llOgNvt8HuQjQvIyXM7v6jkmxI0=
+
+punycode@^1.3.2:
+  version "1.4.1"
+  resolved "https://registry.yarnpkg.com/punycode/-/punycode-1.4.1.tgz#c0d5a63b2718800ad8e1eb0fa5269c84dd41845e"
+  integrity sha1-wNWmOycYgArY4esPpSachN1BhF4=
+
+punycode@^2.1.0:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/punycode/-/punycode-2.1.1.tgz#b58b010ac40c22c5657616c8d2c2c02c7bf479ec"
+  integrity sha512-XRsRjdf+j5ml+y/6GKHPZbrF/8p2Yga0JPtdqTIY2Xe5ohJPD9saDJJLPvp9+NSBprVvevdXZybnj2cv8OEd0A==
+
+querystring-es3@~0.2.0:
+  version "0.2.1"
+  resolved "https://registry.yarnpkg.com/querystring-es3/-/querystring-es3-0.2.1.tgz#9ec61f79049875707d69414596fd907a4d711e73"
+  integrity sha1-nsYfeQSYdXB9aUFFlv2Qek1xHnM=
+
+querystring@0.2.0:
+  version "0.2.0"
+  resolved "https://registry.yarnpkg.com/querystring/-/querystring-0.2.0.tgz#b209849203bb25df820da756e747005878521620"
+  integrity sha1-sgmEkgO7Jd+CDadW50cAWHhSFiA=
+
+randombytes@^2.0.0, randombytes@^2.0.1, randombytes@^2.0.5:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/randombytes/-/randombytes-2.1.0.tgz#df6f84372f0270dc65cdf6291349ab7a473d4f2a"
+  integrity sha512-vYl3iOX+4CKUWuxGi9Ukhie6fsqXqS9FE2Zaic4tNFD2N2QQaXOMFbuKK4QmDHC0JO6B1Zp41J0LpT0oR68amQ==
+  dependencies:
+    safe-buffer "^5.1.0"
+
+randomfill@^1.0.3:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/randomfill/-/randomfill-1.0.4.tgz#c92196fc86ab42be983f1bf31778224931d61458"
+  integrity sha512-87lcbR8+MhcWcUiQ+9e+Rwx8MyR2P7qnt15ynUlbm3TU/fjbgz4GsvfSUDTemtCCtVCqb4ZcEFlyPNTh9bBTLw==
+  dependencies:
+    randombytes "^2.0.5"
+    safe-buffer "^5.1.0"
+
+read-only-stream@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/read-only-stream/-/read-only-stream-2.0.0.tgz#2724fd6a8113d73764ac288d4386270c1dbf17f0"
+  integrity sha1-JyT9aoET1zdkrCiNQ4YnDB2/F/A=
+  dependencies:
+    readable-stream "^2.0.2"
+
+readable-stream@^2.0.2, readable-stream@^2.2.2, readable-stream@~2.3.6:
+  version "2.3.7"
+  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-2.3.7.tgz#1eca1cf711aef814c04f62252a36a62f6cb23b57"
+  integrity sha512-Ebho8K4jIbHAxnuxi7o42OrZgF/ZTNcsZj6nRKyUmkhLFq8CHItp/fy6hQZuZmP/n3yZ9VBUbp4zz/mX8hmYPw==
+  dependencies:
+    core-util-is "~1.0.0"
+    inherits "~2.0.3"
+    isarray "~1.0.0"
+    process-nextick-args "~2.0.0"
+    safe-buffer "~5.1.1"
+    string_decoder "~1.1.1"
+    util-deprecate "~1.0.1"
+
+readable-stream@^3.5.0, readable-stream@^3.6.0:
+  version "3.6.0"
+  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-3.6.0.tgz#337bbda3adc0706bd3e024426a286d4b4b2c9198"
+  integrity sha512-BViHy7LKeTz4oNnkcLJ+lVSL6vpiFeX6/d3oSH8zCW7UxP2onchk+vTGB143xuFjHS3deTgkKoXXymXqymiIdA==
+  dependencies:
+    inherits "^2.0.3"
+    string_decoder "^1.1.1"
+    util-deprecate "^1.0.1"
+
+regexpp@^3.1.0:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/regexpp/-/regexpp-3.2.0.tgz#0425a2768d8f23bad70ca4b90461fa2f1213e1b2"
+  integrity sha512-pq2bWo9mVD43nbts2wGv17XLiNLya+GklZ8kaDLV2Z08gDCsGpnKn9BFMepvWuHCbyVvY7J5o5+BVvoQbmlJLg==
+
+require-from-string@^2.0.2:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/require-from-string/-/require-from-string-2.0.2.tgz#89a7fdd938261267318eafe14f9c32e598c36909"
+  integrity sha512-Xf0nWe6RseziFMu+Ap9biiUbmplq6S9/p+7w7YXP/JBHhrUDDUhwa+vANyubuqfZWTveU//DYVGsDG7RKL/vEw==
+
+resolve-from@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/resolve-from/-/resolve-from-4.0.0.tgz#4abcd852ad32dd7baabfe9b40e00a36db5f392e6"
+  integrity sha512-pb/MYmXstAkysRFx8piNI1tGFNQIFA3vkE3Gq4EuA1dF6gHp/+vgZqsCGJapvy8N3Q+4o7FwvquPJcnZ7RYy4g==
+
+resolve@^1.1.4, resolve@^1.17.0, resolve@^1.4.0:
+  version "1.19.0"
+  resolved "https://registry.yarnpkg.com/resolve/-/resolve-1.19.0.tgz#1af5bf630409734a067cae29318aac7fa29a267c"
+  integrity sha512-rArEXAgsBG4UgRGcynxWIWKFvh/XZCcS8UJdHhwy91zwAvCZIbcs+vAbflgBnNjYMs/i/i+/Ux6IZhML1yPvxg==
+  dependencies:
+    is-core-module "^2.1.0"
+    path-parse "^1.0.6"
+
+rimraf@^3.0.2:
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/rimraf/-/rimraf-3.0.2.tgz#f1a5402ba6220ad52cc1282bac1ae3aa49fd061a"
+  integrity sha512-JZkJMZkAGFFPP2YqXZXPbMlMBgsxzE8ILs4lMIX/2o0L9UBw9O/Y3o6wFw/i9YLapcUJWwqbi3kdxIPdC62TIA==
+  dependencies:
+    glob "^7.1.3"
+
+ripemd160@^2.0.0, ripemd160@^2.0.1:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/ripemd160/-/ripemd160-2.0.2.tgz#a1c1a6f624751577ba5d07914cbc92850585890c"
+  integrity sha512-ii4iagi25WusVoiC4B4lq7pbXfAp3D9v5CwfkY33vffw2+pkDjY1D8GaN7spsxvCSx8dkPqOZCEZyfxcmJG2IA==
+  dependencies:
+    hash-base "^3.0.0"
+    inherits "^2.0.1"
+
+safe-buffer@^5.0.1, safe-buffer@^5.1.0, safe-buffer@^5.1.1, safe-buffer@^5.1.2, safe-buffer@^5.2.0, safe-buffer@~5.2.0:
+  version "5.2.1"
+  resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.2.1.tgz#1eaf9fa9bdb1fdd4ec75f58f9cdb4e6b7827eec6"
+  integrity sha512-rp3So07KcdmmKbGvgaNxQSJr7bGVSVk5S9Eq1F+ppbRo70+YeaDxkw5Dd8NPN+GD6bjnYm2VuPuCXmpuYvmCXQ==
+
+safe-buffer@~5.1.0, safe-buffer@~5.1.1:
+  version "5.1.2"
+  resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.2.tgz#991ec69d296e0313747d59bdfd2b745c35f8828d"
+  integrity sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==
+
+safer-buffer@^2.1.0:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/safer-buffer/-/safer-buffer-2.1.2.tgz#44fa161b0187b9549dd84bb91802f9bd8385cd6a"
+  integrity sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg==
+
+semver@^7.2.1:
+  version "7.3.5"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-7.3.5.tgz#0b621c879348d8998e4b0e4be94b3f12e6018ef7"
+  integrity sha512-PoeGJYh8HK4BTO/a9Tf6ZG3veo/A7ZVsYrSA6J8ny9nb3B1VrpkuN+z9OE5wfE5p6H4LchYZsegiQgbJD94ZFQ==
+  dependencies:
+    lru-cache "^6.0.0"
+
+sha.js@^2.4.0, sha.js@^2.4.8:
+  version "2.4.11"
+  resolved "https://registry.yarnpkg.com/sha.js/-/sha.js-2.4.11.tgz#37a5cf0b81ecbc6943de109ba2960d1b26584ae7"
+  integrity sha512-QMEp5B7cftE7APOjk5Y6xgrbWu+WkLVQwk8JNjZ8nKRciZaByEW6MubieAiToS7+dwvrjGhH8jRXz3MVd0AYqQ==
+  dependencies:
+    inherits "^2.0.1"
+    safe-buffer "^5.0.1"
+
+shasum-object@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/shasum-object/-/shasum-object-1.0.0.tgz#0b7b74ff5b66ecf9035475522fa05090ac47e29e"
+  integrity sha512-Iqo5rp/3xVi6M4YheapzZhhGPVs0yZwHj7wvwQ1B9z8H6zk+FEnI7y3Teq7qwnekfEhu8WmG2z0z4iWZaxLWVg==
+  dependencies:
+    fast-safe-stringify "^2.0.7"
+
+shebang-command@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/shebang-command/-/shebang-command-2.0.0.tgz#ccd0af4f8835fbdc265b82461aaf0c36663f34ea"
+  integrity sha512-kHxr2zZpYtdmrN1qDjrrX/Z1rR1kG8Dx+gkpK1G4eXmvXswmcE1hTWBWYUzlraYw1/yZp6YuDY77YtvbN0dmDA==
+  dependencies:
+    shebang-regex "^3.0.0"
+
+shebang-regex@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/shebang-regex/-/shebang-regex-3.0.0.tgz#ae16f1644d873ecad843b0307b143362d4c42172"
+  integrity sha512-7++dFhtcx3353uBaq8DDR4NuxBetBzC7ZQOhmTQInHEd6bSrXdiEyzCvG07Z44UYdLShWUyXt5M/yhz8ekcb1A==
+
+shell-quote@^1.6.1:
+  version "1.7.2"
+  resolved "https://registry.yarnpkg.com/shell-quote/-/shell-quote-1.7.2.tgz#67a7d02c76c9da24f99d20808fcaded0e0e04be2"
+  integrity sha512-mRz/m/JVscCrkMyPqHc/bczi3OQHkLTqXHEFu0zDhK/qfv3UcOA4SVmRCLmos4bhjr9ekVQubj/R7waKapmiQg==
+
+simple-concat@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/simple-concat/-/simple-concat-1.0.1.tgz#f46976082ba35c2263f1c8ab5edfe26c41c9552f"
+  integrity sha512-cSFtAPtRhljv69IK0hTVZQ+OfE9nePi/rtJmw5UjHeVyVroEqJXP1sFztKUy1qU+xvz3u/sfYJLa947b7nAN2Q==
+
+slice-ansi@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/slice-ansi/-/slice-ansi-4.0.0.tgz#500e8dd0fd55b05815086255b3195adf2a45fe6b"
+  integrity sha512-qMCMfhY040cVHT43K9BFygqYbUPFZKHOg7K73mtTWJRb8pyP3fzf4Ixd5SzdEJQ6MRUg/WBnOLxghZtKKurENQ==
+  dependencies:
+    ansi-styles "^4.0.0"
+    astral-regex "^2.0.0"
+    is-fullwidth-code-point "^3.0.0"
+
+source-map-support@0.5.19:
+  version "0.5.19"
+  resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.19.tgz#a98b62f86dcaf4f67399648c085291ab9e8fed61"
+  integrity sha512-Wonm7zOCIJzBGQdB+thsPar0kYuCIzYvxZwlBa87yi/Mdjv7Tip2cyVbLj5o0cFPN4EVkuTwb3GDDyUx2DGnGw==
+  dependencies:
+    buffer-from "^1.0.0"
+    source-map "^0.6.0"
+
+source-map-support@~0.5.20:
+  version "0.5.21"
+  resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.21.tgz#04fe7c7f9e1ed2d662233c28cb2b35b9f63f6e4f"
+  integrity sha512-uBHU3L3czsIyYXKX88fdrGovxdSCoTGDRZ6SYXtSRxLZUzHg5P/66Ht6uoUlHu9EZod+inXhKo3qQgwXUT/y1w==
+  dependencies:
+    buffer-from "^1.0.0"
+    source-map "^0.6.0"
+
+source-map@^0.6.0:
+  version "0.6.1"
+  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.6.1.tgz#74722af32e9614e9c287a8d0bbde48b5e2f1a263"
+  integrity sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==
+
+source-map@~0.5.3:
+  version "0.5.7"
+  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.5.7.tgz#8a039d2d1021d22d1ea14c80d8ea468ba2ef3fcc"
+  integrity sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w=
+
+source-map@~0.7.2:
+  version "0.7.3"
+  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.7.3.tgz#5302f8169031735226544092e64981f751750383"
+  integrity sha512-CkCj6giN3S+n9qrYiBTX5gystlENnRW5jZeNLHpe6aue+SrHcG5VYwujhW9s4dY31mEGsxBDrHR6oI69fTXsaQ==
+
+sprintf-js@~1.0.2:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/sprintf-js/-/sprintf-js-1.0.3.tgz#04e6926f662895354f3dd015203633b857297e2c"
+  integrity sha1-BOaSb2YolTVPPdAVIDYzuFcpfiw=
+
+stream-browserify@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/stream-browserify/-/stream-browserify-3.0.0.tgz#22b0a2850cdf6503e73085da1fc7b7d0c2122f2f"
+  integrity sha512-H73RAHsVBapbim0tU2JwwOiXUj+fikfiaoYAKHF3VJfA0pe2BCzkhAHBlLG6REzE+2WNZcxOXjK7lkso+9euLA==
+  dependencies:
+    inherits "~2.0.4"
+    readable-stream "^3.5.0"
+
+stream-combiner2@^1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/stream-combiner2/-/stream-combiner2-1.1.1.tgz#fb4d8a1420ea362764e21ad4780397bebcb41cbe"
+  integrity sha1-+02KFCDqNidk4hrUeAOXvry0HL4=
+  dependencies:
+    duplexer2 "~0.1.0"
+    readable-stream "^2.0.2"
+
+stream-http@^3.0.0:
+  version "3.1.1"
+  resolved "https://registry.yarnpkg.com/stream-http/-/stream-http-3.1.1.tgz#0370a8017cf8d050b9a8554afe608f043eaff564"
+  integrity sha512-S7OqaYu0EkFpgeGFb/NPOoPLxFko7TPqtEeFg5DXPB4v/KETHG0Ln6fRFrNezoelpaDKmycEmmZ81cC9DAwgYg==
+  dependencies:
+    builtin-status-codes "^3.0.0"
+    inherits "^2.0.4"
+    readable-stream "^3.6.0"
+    xtend "^4.0.2"
+
+stream-splicer@^2.0.0:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/stream-splicer/-/stream-splicer-2.0.1.tgz#0b13b7ee2b5ac7e0609a7463d83899589a363fcd"
+  integrity sha512-Xizh4/NPuYSyAXyT7g8IvdJ9HJpxIGL9PjyhtywCZvvP0OPIdqyrr4dMikeuvY8xahpdKEBlBTySe583totajg==
+  dependencies:
+    inherits "^2.0.1"
+    readable-stream "^2.0.2"
+
+string-width@^4.2.0:
+  version "4.2.2"
+  resolved "https://registry.yarnpkg.com/string-width/-/string-width-4.2.2.tgz#dafd4f9559a7585cfba529c6a0a4f73488ebd4c5"
+  integrity sha512-XBJbT3N4JhVumXE0eoLU9DCjcaF92KLNqTmFCnG1pf8duUxFGwtP6AD6nkjw9a3IdiRtL3E2w3JDiE/xi3vOeA==
+  dependencies:
+    emoji-regex "^8.0.0"
+    is-fullwidth-code-point "^3.0.0"
+    strip-ansi "^6.0.0"
+
+string.prototype.trimend@^1.0.1:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/string.prototype.trimend/-/string.prototype.trimend-1.0.3.tgz#a22bd53cca5c7cf44d7c9d5c732118873d6cd18b"
+  integrity sha512-ayH0pB+uf0U28CtjlLvL7NaohvR1amUvVZk+y3DYb0Ey2PUV5zPkkKy9+U1ndVEIXO8hNg18eIv9Jntbii+dKw==
+  dependencies:
+    call-bind "^1.0.0"
+    define-properties "^1.1.3"
+
+string.prototype.trimstart@^1.0.1:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/string.prototype.trimstart/-/string.prototype.trimstart-1.0.3.tgz#9b4cb590e123bb36564401d59824298de50fd5aa"
+  integrity sha512-oBIBUy5lea5tt0ovtOFiEQaBkoBBkyJhZXzJYrSmDo5IUUqbOPvVezuRs/agBIdZ2p2Eo1FD6bD9USyBLfl3xg==
+  dependencies:
+    call-bind "^1.0.0"
+    define-properties "^1.1.3"
+
+string_decoder@^1.1.1:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-1.3.0.tgz#42f114594a46cf1a8e30b0a84f56c78c3edac21e"
+  integrity sha512-hkRX8U1WjJFd8LsDJ2yQ/wWWxaopEsABU1XfkM8A+j0+85JAGppt16cr1Whg6KIbb4okU6Mql6BOj+uup/wKeA==
+  dependencies:
+    safe-buffer "~5.2.0"
+
+string_decoder@~1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-1.1.1.tgz#9cf1611ba62685d7030ae9e4ba34149c3af03fc8"
+  integrity sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==
+  dependencies:
+    safe-buffer "~5.1.0"
+
+strip-ansi@^6.0.0:
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-6.0.0.tgz#0b1571dd7669ccd4f3e06e14ef1eed26225ae532"
+  integrity sha512-AuvKTrTfQNYNIctbR1K/YGTR1756GycPsg7b9bdV9Duqur4gv6aKqHXah67Z8ImS7WEz5QVcOtlfW2rZEugt6w==
+  dependencies:
+    ansi-regex "^5.0.0"
+
+strip-json-comments@^3.1.0, strip-json-comments@^3.1.1:
+  version "3.1.1"
+  resolved "https://registry.yarnpkg.com/strip-json-comments/-/strip-json-comments-3.1.1.tgz#31f1281b3832630434831c310c01cccda8cbe006"
+  integrity sha512-6fPc+R4ihwqP6N/aIv2f1gMH8lOVtWQHoqC4yK6oSDVVocumAsfCqjkXnqiYMhmMwS/mEHLp7Vehlt3ql6lEig==
+
+subarg@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/subarg/-/subarg-1.0.0.tgz#f62cf17581e996b48fc965699f54c06ae268b8d2"
+  integrity sha1-9izxdYHplrSPyWVpn1TAauJouNI=
+  dependencies:
+    minimist "^1.1.0"
+
+supports-color@^5.3.0:
+  version "5.5.0"
+  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-5.5.0.tgz#e2e69a44ac8772f78a1ec0b35b689df6530efc8f"
+  integrity sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==
+  dependencies:
+    has-flag "^3.0.0"
+
+supports-color@^7.1.0:
+  version "7.2.0"
+  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-7.2.0.tgz#1b7dcdcb32b8138801b3e478ba6a51caa89648da"
+  integrity sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw==
+  dependencies:
+    has-flag "^4.0.0"
+
+syntax-error@^1.1.1:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/syntax-error/-/syntax-error-1.4.0.tgz#2d9d4ff5c064acb711594a3e3b95054ad51d907c"
+  integrity sha512-YPPlu67mdnHGTup2A8ff7BC2Pjq0e0Yp/IyTFN03zWO0RcK07uLcbi7C2KpGR2FvWbaB0+bfE27a+sBKebSo7w==
+  dependencies:
+    acorn-node "^1.2.0"
+
+table@^6.0.9:
+  version "6.7.1"
+  resolved "https://registry.yarnpkg.com/table/-/table-6.7.1.tgz#ee05592b7143831a8c94f3cee6aae4c1ccef33e2"
+  integrity sha512-ZGum47Yi6KOOFDE8m223td53ath2enHcYLgOCjGr5ngu8bdIARQk6mN/wRMv4yMRcHnCSnHbCEha4sobQx5yWg==
+  dependencies:
+    ajv "^8.0.1"
+    lodash.clonedeep "^4.5.0"
+    lodash.truncate "^4.4.2"
+    slice-ansi "^4.0.0"
+    string-width "^4.2.0"
+    strip-ansi "^6.0.0"
+
+terser@^5.9.0:
+  version "5.10.0"
+  resolved "https://registry.yarnpkg.com/terser/-/terser-5.10.0.tgz#b86390809c0389105eb0a0b62397563096ddafcc"
+  integrity sha512-AMmF99DMfEDiRJfxfY5jj5wNH/bYO09cniSqhfoyxc8sFoYIgkJy86G04UoZU5VjlpnplVu0K6Tx6E9b5+DlHA==
+  dependencies:
+    commander "^2.20.0"
+    source-map "~0.7.2"
+    source-map-support "~0.5.20"
+
+text-table@^0.2.0:
+  version "0.2.0"
+  resolved "https://registry.yarnpkg.com/text-table/-/text-table-0.2.0.tgz#7f5ee823ae805207c00af2df4a84ec3fcfa570b4"
+  integrity sha1-f17oI66AUgfACvLfSoTsP8+lcLQ=
+
+through2@^2.0.0:
+  version "2.0.5"
+  resolved "https://registry.yarnpkg.com/through2/-/through2-2.0.5.tgz#01c1e39eb31d07cb7d03a96a70823260b23132cd"
+  integrity sha512-/mrRod8xqpA+IHSLyGCQ2s8SPHiCDEeQJSep1jqLYeEUClOFG2Qsh+4FU6G9VeqpZnGW/Su8LQGc4YKni5rYSQ==
+  dependencies:
+    readable-stream "~2.3.6"
+    xtend "~4.0.1"
+
+"through@>=2.2.7 <3":
+  version "2.3.8"
+  resolved "https://registry.yarnpkg.com/through/-/through-2.3.8.tgz#0dd4c9ffaabc357960b1b724115d7e0e86a2e1f5"
+  integrity sha1-DdTJ/6q8NXlgsbckEV1+Doai4fU=
+
+timers-browserify@^1.0.1:
+  version "1.4.2"
+  resolved "https://registry.yarnpkg.com/timers-browserify/-/timers-browserify-1.4.2.tgz#c9c58b575be8407375cb5e2462dacee74359f41d"
+  integrity sha1-ycWLV1voQHN1y14kYtrO50NZ9B0=
+  dependencies:
+    process "~0.11.0"
+
+tty-browserify@0.0.1:
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/tty-browserify/-/tty-browserify-0.0.1.tgz#3f05251ee17904dfd0677546670db9651682b811"
+  integrity sha512-C3TaO7K81YvjCgQH9Q1S3R3P3BtN3RIM8n+OvX4il1K1zgE8ZhI0op7kClgkxtutIE8hQrcrHBXvIheqKUUCxw==
+
+type-check@^0.4.0, type-check@~0.4.0:
+  version "0.4.0"
+  resolved "https://registry.yarnpkg.com/type-check/-/type-check-0.4.0.tgz#07b8203bfa7056c0657050e3ccd2c37730bab8f1"
+  integrity sha512-XleUoc9uwGXqjWwXaUTZAmzMcFZ5858QA2vvx1Ur5xIcixXIP+8LnFDgRplU30us6teqdlskFfu+ae4K79Ooew==
+  dependencies:
+    prelude-ls "^1.2.1"
+
+type-fest@^0.20.2:
+  version "0.20.2"
+  resolved "https://registry.yarnpkg.com/type-fest/-/type-fest-0.20.2.tgz#1bf207f4b28f91583666cb5fbd327887301cd5f4"
+  integrity sha512-Ne+eE4r0/iWnpAxD852z3A+N0Bt5RN//NjJwRd2VFHEmrywxf5vsZlh4R6lixl6B+wz/8d+maTSAkN1FIkI3LQ==
+
+typedarray@^0.0.6:
+  version "0.0.6"
+  resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
+  integrity sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=
+
+umd@^3.0.0:
+  version "3.0.3"
+  resolved "https://registry.yarnpkg.com/umd/-/umd-3.0.3.tgz#aa9fe653c42b9097678489c01000acb69f0b26cf"
+  integrity sha512-4IcGSufhFshvLNcMCV80UnQVlZ5pMOC8mvNPForqwA4+lzYQuetTESLDQkeLmihq8bRcnpbQa48Wb8Lh16/xow==
+
+undeclared-identifiers@^1.1.2:
+  version "1.1.3"
+  resolved "https://registry.yarnpkg.com/undeclared-identifiers/-/undeclared-identifiers-1.1.3.tgz#9254c1d37bdac0ac2b52de4b6722792d2a91e30f"
+  integrity sha512-pJOW4nxjlmfwKApE4zvxLScM/njmwj/DiUBv7EabwE4O8kRUy+HIwxQtZLBPll/jx1LJyBcqNfB3/cpv9EZwOw==
+  dependencies:
+    acorn-node "^1.3.0"
+    dash-ast "^1.0.0"
+    get-assigned-identifiers "^1.2.0"
+    simple-concat "^1.0.0"
+    xtend "^4.0.1"
+
+uri-js@^4.2.2:
+  version "4.4.1"
+  resolved "https://registry.yarnpkg.com/uri-js/-/uri-js-4.4.1.tgz#9b1a52595225859e55f669d928f88c6c57f2a77e"
+  integrity sha512-7rKUyy33Q1yc98pQ1DAmLtwX109F7TIfWlW1Ydo8Wl1ii1SeHieeh0HHfPeL2fMXK6z0s8ecKs9frCuLJvndBg==
+  dependencies:
+    punycode "^2.1.0"
+
+url@~0.11.0:
+  version "0.11.0"
+  resolved "https://registry.yarnpkg.com/url/-/url-0.11.0.tgz#3838e97cfc60521eb73c525a8e55bfdd9e2e28f1"
+  integrity sha1-ODjpfPxgUh63PFJajlW/3Z4uKPE=
+  dependencies:
+    punycode "1.3.2"
+    querystring "0.2.0"
+
+util-deprecate@^1.0.1, util-deprecate@~1.0.1:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/util-deprecate/-/util-deprecate-1.0.2.tgz#450d4dc9fa70de732762fbd2d4a28981419a0ccf"
+  integrity sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8=
+
+util@0.10.3:
+  version "0.10.3"
+  resolved "https://registry.yarnpkg.com/util/-/util-0.10.3.tgz#7afb1afe50805246489e3db7fe0ed379336ac0f9"
+  integrity sha1-evsa/lCAUkZInj23/g7TeTNqwPk=
+  dependencies:
+    inherits "2.0.1"
+
+util@~0.12.0:
+  version "0.12.3"
+  resolved "https://registry.yarnpkg.com/util/-/util-0.12.3.tgz#971bb0292d2cc0c892dab7c6a5d37c2bec707888"
+  integrity sha512-I8XkoQwE+fPQEhy9v012V+TSdH2kp9ts29i20TaaDUXsg7x/onePbhFJUExBfv/2ay1ZOp/Vsm3nDlmnFGSAog==
+  dependencies:
+    inherits "^2.0.3"
+    is-arguments "^1.0.4"
+    is-generator-function "^1.0.7"
+    is-typed-array "^1.1.3"
+    safe-buffer "^5.1.2"
+    which-typed-array "^1.1.2"
+
+v8-compile-cache@^2.0.3:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/v8-compile-cache/-/v8-compile-cache-2.3.0.tgz#2de19618c66dc247dcfb6f99338035d8245a2cee"
+  integrity sha512-l8lCEmLcLYZh4nbunNZvQCJc5pv7+RCwa8q/LdUx8u7lsWvPDKmpodJAJNwkAhJC//dFY48KuIEmjtd4RViDrA==
+
+vm-browserify@^1.0.0:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/vm-browserify/-/vm-browserify-1.1.2.tgz#78641c488b8e6ca91a75f511e7a3b32a86e5dda0"
+  integrity sha512-2ham8XPWTONajOR0ohOKOHXkm3+gaBmGut3SRuu75xLd/RRaY6vqgh8NBYYk7+RW3u5AtzPQZG8F10LHkl0lAQ==
+
+which-typed-array@^1.1.2:
+  version "1.1.4"
+  resolved "https://registry.yarnpkg.com/which-typed-array/-/which-typed-array-1.1.4.tgz#8fcb7d3ee5adf2d771066fba7cf37e32fe8711ff"
+  integrity sha512-49E0SpUe90cjpoc7BOJwyPHRqSAd12c10Qm2amdEZrJPCY2NDxaW01zHITrem+rnETY3dwrbH3UUrUwagfCYDA==
+  dependencies:
+    available-typed-arrays "^1.0.2"
+    call-bind "^1.0.0"
+    es-abstract "^1.18.0-next.1"
+    foreach "^2.0.5"
+    function-bind "^1.1.1"
+    has-symbols "^1.0.1"
+    is-typed-array "^1.1.3"
+
+which@^2.0.1:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/which/-/which-2.0.2.tgz#7c6a8dd0a636a0327e10b59c9286eee93f3f51b1"
+  integrity sha512-BLI3Tl1TW3Pvl70l3yq3Y64i+awpwXqsGBYWkkqMtnbXgrMD+yj7rhW0kuEDxzJaYXGjEW5ogapKNMEKNMjibA==
+  dependencies:
+    isexe "^2.0.0"
+
+word-wrap@^1.2.3:
+  version "1.2.3"
+  resolved "https://registry.yarnpkg.com/word-wrap/-/word-wrap-1.2.3.tgz#610636f6b1f703891bd34771ccb17fb93b47079c"
+  integrity sha512-Hz/mrNwitNRh/HUAtM/VT/5VH+ygD6DV7mYKZAtHOrbs8U7lvPS6xf7EJKMF0uW1KJCl0H701g3ZGus+muE5vQ==
+
+wrappy@1:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/wrappy/-/wrappy-1.0.2.tgz#b5243d8f3ec1aa35f1364605bc0d1036e30ab69f"
+  integrity sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=
+
+xtend@^4.0.0, xtend@^4.0.1, xtend@^4.0.2, xtend@~4.0.1:
+  version "4.0.2"
+  resolved "https://registry.yarnpkg.com/xtend/-/xtend-4.0.2.tgz#bb72779f5fa465186b1f438f674fa347fdb5db54"
+  integrity sha512-LKYU1iAXJXUgAXn9URjiu+MWhyUXHsvfp7mcuYm9dSUKK0/CjtrUwFAxD82/mCWbtLsGjFIad0wIsod4zrTAEQ==
+
+yallist@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/yallist/-/yallist-4.0.0.tgz#9bb92790d9c0effec63be73519e11a35019a3a72"
+  integrity sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A==